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EP0218974B1 - Method and apparatus for producing effect yarn on open-end spinning devices - Google Patents

Method and apparatus for producing effect yarn on open-end spinning devices Download PDF

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Publication number
EP0218974B1
EP0218974B1 EP86113337A EP86113337A EP0218974B1 EP 0218974 B1 EP0218974 B1 EP 0218974B1 EP 86113337 A EP86113337 A EP 86113337A EP 86113337 A EP86113337 A EP 86113337A EP 0218974 B1 EP0218974 B1 EP 0218974B1
Authority
EP
European Patent Office
Prior art keywords
fiber
fiber material
fancy
effect
feeding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86113337A
Other languages
German (de)
French (fr)
Other versions
EP0218974A2 (en
EP0218974A3 (en
Inventor
Peter Dr.-Ing. Artzt
Heinz Dipl.-Ing. Müller (FH)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Schubert und Salzer Maschinenfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Priority to AT86113337T priority Critical patent/ATE44292T1/en
Publication of EP0218974A2 publication Critical patent/EP0218974A2/en
Publication of EP0218974A3 publication Critical patent/EP0218974A3/en
Application granted granted Critical
Publication of EP0218974B1 publication Critical patent/EP0218974B1/en
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor

Definitions

  • the present invention relates to a method for producing a fancy yarn on open-end spinning devices, in which ribbon-like basic fiber material is dissolved into individual fibers and fed to an open-end spinning element in an air stream, and an apparatus for carrying out this method.
  • the effect fiber material is dissolved by means of a drafting system and the pieces of effect material thus produced are thrown against a screen by means of an air stream for the purpose of further conveyance to the nip between a pair of rotating friction rollers, where they engage combine the base material and twist it into a thread.
  • the frequency length and thickness of the effect material pieces in the effect yarn is determined by means of a program that influences the drive of the drawing rollers for the production of the effect material pieces.
  • Such a drive, controlled by the program is complex.
  • only those effects can be created that have been entered into the program. Since such a program can only have a limited length of variation, it cannot be avoided that the variations are repeated even with complex programming. For fancy yarns, however, it is desirable that as few repetitions of the variations as possible occur or only after long periods.
  • the object of the invention is to provide a method and a device for producing knitting yarn with which the greatest possible random distribution of the effects is achieved in a simple manner.
  • the effect fiber material at a constant speed in the form of a closed, i.e. uninterrupted, fiber sliver is fed to an air stream and that fiber tufts are detached by this air stream and the fiber tufts detached in this way are fed to the open-end spinning element together with the dissolved base fiber material.
  • the fiber material causing the effects is therefore not dissolved, as was previously the case, by a mechanical dissolving device, but by the suction effect of the flowing air, to which this material is fed.
  • the air flow unevenly releases the fibers from the front end of the sliver retained by a feeder.
  • the distribution of the effect fiber material in the finished fancy yarn is left to chance as to the size and sequence of the fiber groups or fibers detached from the fiber sliver.
  • a normal delivery device without any control is therefore sufficient for carrying out the method, since it is not necessary to control the effects by variable feeding of the Effket fiber material.
  • This method according to the invention is particularly suitable for the production of yarns with color effects.
  • the method according to the invention is also very suitable for fine yarns in which effects cannot be produced in the desired gradation due to the inertia of the known device.
  • the flow rate of the air stream is much higher than the feed speed of the effect fiber material.
  • the effect fiber material is dissolved into a fiber bundle in an effect material air flow and the fiber tufts detached in this way with this Effect material air flow are fed to the transport air flow for the basic fiber material.
  • the effect fiber material is advantageously supplied to the air stream during its acceleration.
  • the flow of the individual fibers detached from the base fiber material is not impaired if it is expediently provided that the effect fiber material is dissolved before the acceleration of the air flow has ended.
  • the transport air stream and the effect material air stream have essentially the same flow direction before they are combined.
  • the fiber material causing the effects is only dissolved pneumatically, but not mechanically.
  • the intensity of the air flow acting on the fiber material is of essential importance for the dissolution of the fiber band consisting of the effect fiber material.
  • the effect fiber material is expediently fed into the transport air stream for the base fiber material at the location of the greatest air speed.
  • Deviating effects can be achieved according to the invention when the same slivers are fed in that the constant feed speed of the effect fiber material is adjusted according to the desired effects.
  • the effect fiber material can also be supplied in the form of a plurality of fiber ribbons, these two or more effect material fiber ribbons also having different constants Speeds can be fed.
  • the fiber feed channel has, according to the invention, a feed opening through which the effect fiber material is fed to the fiber feed channel, which is supplied by the feed device at a constant speed. In this way the detachment of the effect fiber material in the form of a fiber bundle takes place pneumatically.
  • the fiber feed channel has cross-sectional areas with different speeds of the air flow guided by it and that the feed opening is arranged in the area of the higher flow speed in the fiber feed channel.
  • a band guide is advantageously provided which keeps the fiber band in the region of the higher flow speed.
  • the fiber band consisting of the effect fiber material is to be dissolved in time in the air stream in such a way that the fiber band does not impair the fiber orientation of the individual fibers detached from the basic fiber material.
  • the feed opening is formed by the end of a fiber feed channel for the effect fiber material, the length of which exceeds the maximum staple length of the single fibers contained in the effect fiber material.
  • the fiber feed channel for the effect fiber material is essentially in Longitudinal direction of the fiber feed channel for the basic fiber material opens into it. If the fiber feed channel for the base fiber material starts tangentially from an opening roller, then according to a preferred embodiment of the subject matter of the invention, the fiber feed channel for the effect fiber material forms the rearward extension of the fiber feed channel for the base fiber material.
  • the effect fiber material is fed to the base fiber material on its transport path between the opening roller and the open-end spinning element.
  • the interior of the opening roller housing in the area of the start of the fiber feed channel for the basic fiber material has an extension into which the fiber feed channel for the effect Fiber material opens tangentially to the opening roller.
  • a normal yarn can also be spun without effects by not feeding any fiber material into the feed opening.
  • the air sucked in through the feed opening does not impair the normal spinning process.
  • a closure member is assigned to the feed opening. This is advantageously arranged in the area of the undissolved sliver, so that when a fancy yarn is being produced, no fibers that have already been detached from the sliver can get stuck here.
  • An adjustable drive is advantageously assigned to the feed device, so that the constant feed speed of the effect fiber material can be determined in different ways compared to the base fiber material.
  • a pair of rollers or a drafting device can be used as the feeding device for the effect fiber material, the distortion in the drafting device being determined in such a way that the fiber band warped in the drafting device is not broken down into individual fibers, but also forms a fiber structure when leaving the drafting device, so that The detachment of fiber bundles is done pneumatically by an air flow.
  • the present invention enables a shift-resistant fancy yarn, in particular a yarn with color effects, to be produced in a simple manner, the effects in terms of sequence and size being left to chance.
  • the effect fiber material is not dissolved mechanically, so that no conventional dissolving device for the effect fiber material is required. If the fiber material presented is still too strong for direct pneumatic dissolution, the pair of rollers of the feed device can be formed by the pair of output rollers of a conventional drafting system, which, however, only warps the fiber material so far that a still closed, i.e. uninterrupted fiber sliver emerges from this drafting system . This sliver is then released pneumatically.
  • the device according to the invention is very simple in construction. It is also not necessary with a favorable design of the device according to the invention to increase the spinning vacuum, which generates the air flow causing the dissolution of the sliver, compared to the normal spinning process, so that the device according to the invention is not only simple in construction, but also economical Operation is.
  • the open-end spinning device shown in FIG. 1 has, as the most important elements, a spinning element designed as a spinning rotor 1, a opening device 2 designed as opening roller 22 and a fiber feed channel 3 for the base fiber material 26, which extends from opening roller 22 to spinning rotor 1.
  • the spinning rotor 1 is arranged in a housing 10 which is connected via a connection 11 to a vacuum source, not shown.
  • the housing 10 is closed with a cover 12, through which the fiber feed channel 3 and a thread take-off channel 4 extend into the interior of the spinning rotor 1.
  • the feed opening 52 of a fiber feed channel 5 for the effect fiber material 7 opens into the fiber feed channel 3 for the base fiber material.
  • a feed device 6 is arranged in front of the inlet mouth 50 of this fiber feed channel 5. In this case, a distance serving as an air inlet opening 51 is provided between the feed device 6 and the fiber feed channel 5.
  • the feed device 6 essentially has a pair of rollers which consists of a drivable feed roller 60 and a pressure roller 61 which rests elastically thereon.
  • the feed roller 60 is driven by a motor 63 at a constant speed via an overdrive 62.
  • the base fiber material 26 is supplied to the opening roller 22 arranged in a housing 25 in the usual way by means of a feed device 24 and is broken up into individual fibers 20 by the opening roller 22.
  • a transport air flow 9 is generated in the fiber feed channel 3 by the negative pressure present at the connection 11 of the housing 10. This transport air flow 9 serves as a transport medium for the individual fibers 20 leaving the opening roller 22.
  • this transport air flow in the fiber feed channel 3 causes an effect material air flow 90 to be created in the fiber feed channel 5.
  • the effect fiber material in the form of a sliver 7 is fed to the fiber feed channel 5 at a constant speed.
  • a slightly twisted sliver band or an untwisted stretch band can be used as the sliver 7.
  • this sliver 7 still forms a closed, i.e. after leaving the feed device 6. continuous fiber association.
  • a strong suction effect is exerted on the leading end 70 of the sliver 7 by the aforementioned effect material air flow 90, which penetrates into the fiber feed channel 5 through the air inlet opening 51.
  • the leading end 70 flutters back and forth in the fiber feed channel 5 and is turned open when the fiber sliver 7 is a twisted fiber sliver.
  • Individual fibers and tufts of fibers 71 are irregularly released from the fiber sliver 7 by the air and, with the aid of the effect material air flow 90, are conveyed through the feed opening 52 into the fiber feed channel 3, where they emerge from the Mix sliver 7 of individual fibers and bundles of fibers 71 with single fiber 20 detached from the base fiber material and together with the individual fibers 20 of the dissolved base fiber material 26 the open-end spinning element, for example a spinning rotor 1, are supplied.
  • the sliver 7 is thus purely pneumatic, the effect being controlled solely by the fiber friction.
  • the individual fibers and tufts 71 are pneumatically released from the sliver 7 in an irregular manner, so that they differ in sequence and size. Therefore, even after the union and mixing of the individual fibers 20 and fiber tufts 71, no homogeneous fiber mixture is produced.
  • the resulting fancy yarn 40 is thus also irregularly patterned, although no effect control devices are provided. The random distribution of the effects results automatically from the removal of fibers and fiber bundle 71.
  • any fiber materials can be spun together in the manner described and with the aid of the device described. However, the effects appear most clearly when the spinning rotor 1 is supplied with fiber material of different colors or hues via the two fiber feed channels 3 and 5. On the This creates a yarn with uneven color effects.
  • the fiber feed channel 5 is of such a length that the dissolution of the fiber band 7 into individual fibers and fiber tufts 71 with the aid of the effect material air flow 90, i.e. still in the fiber feed channel 5, before this opens into the fiber feed channel 3 with the transport air flow 9.
  • the leading end 70 of the sliver 7 thus does not protrude into the transport air flow, which conveys the individual fibers 20 detached from the base fiber material 26, and thus cannot adversely affect the fiber transport from the opening roller 22 to the spinning rotor 1.
  • the length of the fiber feed channel 5 is selected so that it exceeds the maximum stack length of the individual fibers 71 contained in the effect fiber material. In this way, the effect fiber material, which has already been broken down into individual fibers 71, is introduced into the transport air stream 9 for the base fiber material with the aid of this effect material air flow 90.
  • the fiber feed channel 5 is shorter than in the above-mentioned example when the space is limited.
  • the leading end 70 of the sliver 7 should, however, only protrude so far into the fiber feed channel 3 that the fiber transport between the opening roller 2 and the spinning rotor 1 is not significantly disturbed. It has been shown that this - provided the inside diameter of the fiber feed channel 3 is sufficient - is generally the case when the fiber feed channel 5 has a minimum length which is greater than the minimum staple length of the individual fibers 71 contained in the effect fiber material.
  • FIG. 3 which shows a modification of the device shown in FIG. 1, it is provided that the transport air flow 9 and the effect material air flow 90 in the fiber feed channels 3 and 5 have essentially the same flow direction even before they are combined. Since in the exemplary embodiment shown in FIG. 3 the fiber feed channel 5 forms the rearward extension of the fiber feed channel 3, the fiber feed channel 5 opens into the fiber feed channel 3 essentially in the direction of flow of the transport air flow 9. However, the same is also achieved if, in a modification of the device shown in FIG. 1, the angle between the two fiber feed channels 3 and 5 is chosen to be correspondingly large.
  • FIG. 3 shows a very early feeding of the effect fiber material into the above-mentioned transport air flow for the basic fiber material 26, namely tangentially into the housing 25 of the opening roller 22.
  • the interior space receiving the opening roller 22 has in the area of the beginning of the fiber feed channel 3 for the base fiber material 26 is an extension 27, so that the individual fibers 20 of the base fiber material 26 can already detach from the clothing of the opening roller 22 before they leave the interior of the opening roller housing 25.
  • the fiber feed channel 5 for the effect fiber material 7 opens into this extension 27 of the interior in such a way that the fibers and fiber tufts 71 of the effect fiber material still get into the opening roller housing 25, but without coming into contact with the clothing of the opening roller 22 to get.
  • the fiber feed channel 3 for the base fiber material 26 has a first conical channel section 30 and has a second, substantially cylindrical channel section 31.
  • the feed opening 52 of the fiber feed channel 5 for the effect fiber material 7 opens in the region of the first, i.e. of the tapering, channel section 30 into the fiber feed channel 3.
  • the transport air flow 9 is first accelerated, whereby in addition to the individual fibers 20 of the basic fiber material 26, the individual fibers 71 of the effect supplied with the effect material air flow 90 into the accelerating transport air flow -Fiber material to be stretched.
  • the described length setting for the fiber feed channel 5 ensures that the leading end 70 of the fiber band 7 extends as far as possible into the conical channel section 30 of the fiber feed channel 3, so that the fibers 71 become detached before the acceleration of the transport air flow has ended 9 takes place.
  • the combined air flow then passes into the cylindrical channel section 31, through which the air flow flows essentially at a constant speed.
  • the individual fibers 20 and fiber tufts 71 which due to their inertia can only delay the acceleration of the air, are subsequently accelerated in the calming phase in the cylindrical channel section 31, their stretching and parallel orientation being improved.
  • the described device can be modified in various ways by exchanging features with equivalents or other combinations.
  • the special design of the feed device 6, for example is irrelevant.
  • a drafting device can also be provided (see a gangswalzencru 64 and output roller pair 65), which reduces the supplied sliver 7 to such a thickness that this in the air flow in the second fiber feed channel 5 - and possibly in the first fiber feed channel 3, if the leading end 70 of the sliver 7 into this first fiber feed channel 3rd reaches into - individual fibers and fiber bundles 71 can be resolved.
  • the speed ratios between the input roller pair 64 and the output roller pair 65 - and possibly other roller pairs - are selected so that the sliver 7 fed is reduced to the desired thickness, but is in no way resolved into individual fibers and fiber bundles 71.
  • the open-end spinning element can also be designed as desired.
  • a pair of friction rollers 13 is therefore shown in FIG. 3 as an exemplary embodiment of such a spinning element.
  • the air flow sucked in by the spinning element is weaker than in rotor spinning. For this reason, the air flow can also be increased if necessary by compressed air supplied by means of an injector nozzle (see compressed air nozzles 58 and 59).
  • the fiber feed channel 5 for the effect fiber material 7 can still be omitted under certain circumstances.
  • the band-shaped effect fiber material is then introduced into the fiber feed channel 3 through a feed opening 52, with a correspondingly selected distance of the feed device 6 from the feed opening 52 and thus from the fiber feed channel 3 ensuring that the fiber ribbon 7 only extends so far into the fiber feed channel 3, that proper dissolution of the effect fiber material is guaranteed there.
  • the opening roller 22 has a sawtooth-like thread winding 8.
  • the screw-like gears of the clothing winding 8 move the air from one end face 28 of the opening roller 22, at which the end 80 leading the rotation (arrow 21) of the opening roller 22 the clothing winding 8 is in the direction of the end face 23, on which the trailing end 81 of the clothing winding 8 is located, or vice versa.
  • the direction in which air migrates laterally depends on whether the peripheral speed of the opening roller 22 is greater than the air speed or vice versa. The air speed thus increases over the cross section in the direction of the end face 23 or 28 of the opening roller 22.
  • the effect fiber material is fed into the transport air stream 9 for the basic fiber material 26, based on the cross section, at the location of the greatest air speed .
  • this should be at the front side 23 of the opening roller 22, which is why the fiber feed channel 5 in this embodiment opens into the fiber feeding channel 3 offset toward the front side 23 of the opening roller 2.
  • the feed opening 52 opens into the fiber feed channel 3 in the region of the higher flow velocity, namely on the side of the fiber feed channel 3 to which the air is conveyed through the thread winding 8.
  • a tape guide 66 (FIG. 5) is arranged before the introduction of the fiber ribbon 7 into the second fiber feed channel 5 so that it holds the fiber ribbon 7 on the side of the fiber feed channel 5 on which the greater air speed forms in the fiber feed channel 3.
  • the feed device 6 to the motor 63 (FIG. 1) in such a way that the transmission ratio can be set to different values. This can be done, for example, by replacing gear wheels on the drive shafts of motor 63 and feed roller 60. Depending on the desired intensity of the effects, a higher or a lower feed speed can thus be selected for the feed device, but this then remains constant during the production process.
  • a further fiber feed channel 57 with an air inlet opening 53 and a feed opening 56 and a feed device 67 opens into the fiber feed channel 3 in order to feed effect fiber material in the form of a further sliver 72.
  • the feed device 67 also consists of a feed roller 670 and a pressure roller 671. The feed roller 670 is driven by the motor 63 by means of an overdrive 620.
  • the feed devices 6 and 67 become from the motor by suitably determining the transmission ratio 63 driven out at different constant speeds.
  • the effect fiber material of different fiber tapes 7 and 72 can be fed to the fiber feed channel 3 through several or a single feed opening, depending on the space available. In the latter case, the dissolved or still to be dissolved effect fiber material is brought together at the latest at the common feed opening.
  • the sliver 7 and / or 72 can be retained by the feeder 6 or 67 while being exposed to the air flow.
  • a retaining or tear-off edge 54 can be provided between the feed device 6 or 67 and the first fiber feed channel 3. According to FIG. 1, this is located between fiber feed channel 5 and fiber feed channel 3.
  • a tear-off edge 54 is provided at this point, while a tear-off edge 55 designed as a pin is provided at a kink in the fiber feed channel 57.
  • Such a tear-off edge 54 or 55 is very important, since it limits the effect of the air on the free end of the sliver 7 or 72. In this way it is avoided that too large pieces of fiber can get into the spinning element, which could lead to thread breaks.
  • the fiber feed channel 5 can also be assigned a controllable closure member 91, which in its closed position prevents such an air supply.
  • closure member 91 in the embodiment shown in FIG. 3 is in that area of the fiber feed channel 3 in which the sliver 7 is still has not been broken down into individual fibers and fiber bundles 71.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

When producing fancy yarn on open-end spinning devices, sliver-like basic fiber material is opened into individual fibers and is fed in an air stream to an open-end spinning element. A fiber sliver of the fancy-effect fiber material is conveyed at constant speed into an air stream by which fiber tufts are separated. Fancy-effect fiber tufts and individual fibers thus separated are fed to an open-end spinning element together with the opened basic fiber material. To carry out this process, a feeding device is provided for the fancy-effect fiber material, such feeding device being driven at constant speed so that the fancy-effect fiber material is brought into the fiber feeding channel in the form of an uninterrupted fiber sliver.

Description

Die vorliegenden Erfindung betrifft ein Verfahren zur Herstellung eines Effektgarnes auf Offenend-Spinnvorrichtungen, bei welchem bandartiges Grund-Fasermaterial zu Einzelfasern aufgelöst und in einem Luftstrom einem Offenend-Spinnelement zugeführt wird, sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The present invention relates to a method for producing a fancy yarn on open-end spinning devices, in which ribbon-like basic fiber material is dissolved into individual fibers and fed to an open-end spinning element in an air stream, and an apparatus for carrying out this method.

Bei einer bekannten Vorrichtung dieser Art (DE-OS 2.953.527) wird das Effekt-Fasermaterial mittels eines Streckwerkes aufgelöst und die so erzeugten Effektmaterialstücke mittels eines Luftstromes gegen einen Schirm geschleudert zwecks Weiterbeförderung zu dem Spalt zwischen einem Paar umlaufender Friktionswalzen, wo sie sich mit dem Grundmaterial vereinigen und zu einem Faden zusammengedreht werden. Mittels eines Programmwerkes, das den Antrieb der Streckwalzen für die Erzeugung der Effektmaterialstücke beeinflußt, wird die Frequenzlänge und Stärke der Effektmaterialstücke im Effektgarn bestimmt. Ein solcher Antrieb, gesteuert durch das Programmwerk, ist aufwendig. Außerdem können nur solche Effekte erzeugt werden, die in das Programmwerk eingegeben worden sind. Da ein solches Programm nur eine beschränkte Variationslänge haben kann, läßt es sich nicht vermeiden, daß selbst bei aufwendiger Programmierung die Variationen sich wiederholen. Für Effektgarne ist es jedoch wünschenswert, daß möglichst keine Wiederholungen der Variationen auftreten oder nur nach langen Perioden.In a known device of this type (DE-OS 2,953,527), the effect fiber material is dissolved by means of a drafting system and the pieces of effect material thus produced are thrown against a screen by means of an air stream for the purpose of further conveyance to the nip between a pair of rotating friction rollers, where they engage combine the base material and twist it into a thread. The frequency length and thickness of the effect material pieces in the effect yarn is determined by means of a program that influences the drive of the drawing rollers for the production of the effect material pieces. Such a drive, controlled by the program, is complex. In addition, only those effects can be created that have been entered into the program. Since such a program can only have a limited length of variation, it cannot be avoided that the variations are repeated even with complex programming. For fancy yarns, however, it is desirable that as few repetitions of the variations as possible occur or only after long periods.

Aufgabe der Erfindung ist es, ein Verfahren und eine Vorrichtung zur Erzeugung von Effketgarn zu schaffen, mit welcher auf einfache Weise eine größtmögliche Zufallsverteilung der Effekte erreicht wird.The object of the invention is to provide a method and a device for producing knitting yarn with which the greatest possible random distribution of the effects is achieved in a simple manner.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Effekt-Fasermaterial mit konstanter Geschwindigkeit in Form eines geschlossenen, d.h. ununterbrochenen, Faserbandes einem Luftstrom zugeführt wird und daß durch diesen Luftstrom Faserbüschel abgelöst und die so abgelösten Faserbüschel zusammen mit dem aufgelösten Grund-Fasermaterial dem Offenend-Spinnelement zugeführt werden. Die Auflösung des die Effekte bewirkenden Fasermaterials erfolgt somit nicht, wie bisher üblich, durch eine mechanisch arbeitende Auflöseeinrichtung, sondern durch die Sogwirkung der strömenden Luft, welcher dieses Material zugeführt wird. Die Luftströmung löst die Fasern in ungleichförmiger Weise aus dem vorderen Ende des durch eine Zuführvorrichtung zurückgehaltenen Faserbandes heraus. Die Verteilung des Effekt-Fasermaterials im fertigen Effektgarn ist dabei dem Zufall überlassen, was Größe und Folge der aus dem Faserband herausgelösten Fasergruppen oder Fasern betrifft. Für die Durchführung des Verfahrens genügt deshalb eine normale Liefervorrichtung ohne jegliche Steuerung, da es nicht erforderlich ist, die Effekte durch eine variable Zuführung des Effket-Fasermaterials zu steuern. Dieses erfindungsgemäße Verfahren ist besonders zur Herstellung von Garnen mit Farbeffekten geeignet. Auch für feine Garne, bei denen Effekte wegen der Trägheit der bekannten Vorrichtung nicht in der gewünschten Feinabstufung erzeugt werden können, ist das erfindungsgemäße Verfahren bestens geeignet.This object is achieved in that the effect fiber material at a constant speed in the form of a closed, i.e. uninterrupted, fiber sliver is fed to an air stream and that fiber tufts are detached by this air stream and the fiber tufts detached in this way are fed to the open-end spinning element together with the dissolved base fiber material. The fiber material causing the effects is therefore not dissolved, as was previously the case, by a mechanical dissolving device, but by the suction effect of the flowing air, to which this material is fed. The air flow unevenly releases the fibers from the front end of the sliver retained by a feeder. The distribution of the effect fiber material in the finished fancy yarn is left to chance as to the size and sequence of the fiber groups or fibers detached from the fiber sliver. A normal delivery device without any control is therefore sufficient for carrying out the method, since it is not necessary to control the effects by variable feeding of the Effket fiber material. This method according to the invention is particularly suitable for the production of yarns with color effects. The method according to the invention is also very suitable for fine yarns in which effects cannot be produced in the desired gradation due to the inertia of the known device.

Um eine gute Auflösung des Effekt-Fasermaterials zu erzielen und um Fadenbrüche zu vermeiden, die durch zu große Faserbüschel entstehen könnten, ist erfindungsgemäß die Strömungsgeschwindigkeit des Luftstromes wesentlich höher als die Zuführgeschwindigkeit des Effekt-Fasermaterials.In order to achieve a good resolution of the effect fiber material and to avoid thread breaks, which could arise from too large tufts of fibers, the flow rate of the air stream is much higher than the feed speed of the effect fiber material.

Zur Unterstützung der pneumatischen Auflösung des Effekt-Fasermaterials erfährt dieses in weiterer Ausgestaltung des erfindungsgemäßen Verfahrens, unmittelbar bevor es dem Luftstrom zugeführt wird, eine Rückhaltung.To support the pneumatic dissolution of the effect fiber material, in a further embodiment of the method according to the invention, this is retained immediately before it is fed into the air stream.

Um eine gute Durchmischung der Einzelfasern des Grund-Fasermaterials und des Effekt-Fasermaterials bei gleichmäßigem Gamausfall zu erzielen, wird in vorteilhafter Ausgestaltung des erfindungsgemäßen Verfahrens vorgesehen, daß das Effekt-Fasermaterial in einem Effektmaterial-Luftstrom zu Faserbüschein aufgelöst und die so abgelösten Faserbüschel mit diesem Effektmaterial-Luftstrom dem Transportluftstrom für das Grund-Fasermaterial zugeführt werden.In order to achieve a thorough mixing of the individual fibers of the base fiber material and the effect fiber material with a uniform game failure, in an advantageous embodiment of the method according to the invention it is provided that the effect fiber material is dissolved into a fiber bundle in an effect material air flow and the fiber tufts detached in this way with this Effect material air flow are fed to the transport air flow for the basic fiber material.

Damit die aus dem Effekt-Fasermaterial herausgelösten Einzelfasern genügend Zeit zur Streckung besitzen, wird vorteilhafterweise das Effekt-Fasermaterial dem Luftstrom während dessen Beschleunigung zugeführt.So that the individual fibers detached from the effect fiber material have sufficient time for stretching, the effect fiber material is advantageously supplied to the air stream during its acceleration.

Der Fluß der aus dem Grund-Fasermaterial herausgelösten Einzelfasern wird nicht beeinträchtigt, wenn zweckmäßigerweise vorgesehen ist, daß die Auflösung des Effekt-Fasermaterials vor Beendigung der Beschleunigung des Luftstromes erfolgt.The flow of the individual fibers detached from the base fiber material is not impaired if it is expediently provided that the effect fiber material is dissolved before the acceleration of the air flow has ended.

Um während des Fasertransportes deren Parallellage nicht zu beeinträchtigen, ist in zweckmäßiger Ausgestaltung des erfindungsgemäßen Verfahrens ferner vorgesehen, daß der Transportluftstrom und der Effektmaterial-Luftstrom vor ihrer Vereinigung im wesentlichen die gleiche Strömungsrichtung aufweisen.In order not to impair their parallel position during fiber transport, it is further provided in an expedient embodiment of the method according to the invention that the transport air stream and the effect material air stream have essentially the same flow direction before they are combined.

Die Auflösung des die Effekte bewirkenden Fasermaterials erfolgt lediglich pneumatisch, nicht aber mechanisch. Somit ist die Intensität des auf das Fasermaterial einwirkenden Luftstromes von wesentlicher Bedeutung für die Auflösung der aus dem Effekt-Fasermaterial bestehenden Faserbandes. Um eine Erhöhung des am Offenend-Spinnelement herrschenden Spinnunterdruckes lediglich für die Ablösung der Faserbüschel zu vermeiden, erfolgt deshalb zweckmäßigerweise die Zuführung des Effekt-Fasermaterials in den Transportluftstrom für das Grund-Fasermaterial an der Stelle der größten Luftgeschwindigkeit.The fiber material causing the effects is only dissolved pneumatically, but not mechanically. Thus, the intensity of the air flow acting on the fiber material is of essential importance for the dissolution of the fiber band consisting of the effect fiber material. In order to avoid an increase in the spinning negative pressure prevailing at the open-end spinning element only for the detachment of the fiber tufts, the effect fiber material is expediently fed into the transport air stream for the base fiber material at the location of the greatest air speed.

Abweichende Effekte können bei Zuführung gleicher Faserbänder erfindungsgemäß dadurch erzielt werden, daß die konstante Zuführgeschwindigkeit des Effekt-Fasermaterials je nach den gewünschten Effekten eingestellt wird.Deviating effects can be achieved according to the invention when the same slivers are fed in that the constant feed speed of the effect fiber material is adjusted according to the desired effects.

Um Effekte aus mehr als nur zwei Farben zu erzeugen, kann das Effekt-Fasermaterial auch in Form von mehreren Faserbändern zugeführt werden, wobei diese zwei oder mehr Effektmaterial-Faserbänder auch mit unterschiedlichen konstanten Geschwindigkeiten zugeführt werden können.In order to produce effects from more than just two colors, the effect fiber material can also be supplied in the form of a plurality of fiber ribbons, these two or more effect material fiber ribbons also having different constants Speeds can be fed.

Zur Durchführung des beschriebenen Verfahrens weist erfindungsgemäß der Faserspeisekanal eine Zuführöffnung auf, durch welche das Effekt-Fasermaterial dem Faserspeisekanal zugeführt wird, das von der Zuführeinrichtung mit konstanter Geschwindigkeit geliefert wird. Die Ablösung des Effekt-Fasermaterials in Form von Faserbüschein erfolgt auf diese Weise alleine pneumatisch.To carry out the described method, the fiber feed channel has, according to the invention, a feed opening through which the effect fiber material is fed to the fiber feed channel, which is supplied by the feed device at a constant speed. In this way the detachment of the effect fiber material in the form of a fiber bundle takes place pneumatically.

Da sich gezeigt hat, daß durch Führung des Effekt-Fasermaterials über eine Abrißkante das pneumatische Auflösen dieses Materials wesentlich unterstützt werden kann, wird vorteilhafterweise zwischen der Zuführeinrichtung und dem ersten Faserspeisekanal eine solche Abriß- oder Rückhaltekante vorgesehen.Since it has been shown that the pneumatic dissolving of this material can be significantly supported by guiding the effect fiber material over a tear-off edge, such a tear-off or retention edge is advantageously provided between the feed device and the first fiber feed channel.

Um die Ablösung von Fasern und Faserbüscheln im Luftstrom zu optimieren, kann vorgesehen werden, daß der Faserspeisekanal Querschnittsflächen mit unterschiedlicher Geschwindigkeit der von ihm geführten Luftströmung aufweist und die Zuführöffnung im Bereich der höheren Strömungsgeschwindigkeit im Faserspeisekanal angeordnet ist. Zu diesem Zweck ist vorteilhafterweise ein Bandführer vorgesehen, der das Faserband im Bereich der höheren Strömungsgeschwindigkeit hält.In order to optimize the detachment of fibers and tufts of fibers in the air flow, it can be provided that the fiber feed channel has cross-sectional areas with different speeds of the air flow guided by it and that the feed opening is arranged in the area of the higher flow speed in the fiber feed channel. For this purpose, a band guide is advantageously provided which keeps the fiber band in the region of the higher flow speed.

Um zu gewährleisten, daß sowohl die aus dem Grund-Fasermaterial als auch die aus dem Effekt-Fasermaterial herausgelösten Einzelfasem sich vor Erreichen des Offenend-Spinnelementes beruhigen können, ist erfindungsgemäß zweckmäßigerweise vorgesehen, daß bei einem Faserspeisekanal mit einem sich verjüngenden und einem sich hieran anschließenden zylindrischen Teil die Zuführöffnung im sich verjüngenden Teil des Faserspeisekanals angeordnet ist.In order to ensure that both the individual fibers detached from the base fiber material and from the effect fiber material can calm down before reaching the open-end spinning element, it is expediently provided according to the invention that in the case of a fiber feed channel with a tapering and an adjoining one cylindrical part of the feed opening is arranged in the tapered part of the fiber feed channel.

Die Auflösung des aus dem Effekt-Fasermaterial bestehenden Faserbandes soll erfindungsgemäß im Luftstrom so rechtzeitig erfolgen, daß das Faserband die Faserorientierung der aus dem Grund-Fasermaterial herausgelösten Einzelfasern nicht beeinträchtigt. Dies wird erfindungsgemäß dadurch erreicht, daß die Zuführöffnung durch das Ende eines Faserspeisekanals für das Effekt-Fasermaterial gebildet wird, dessen Länge die maximale Stapellänge der im Effekt-Fasermaterial enthaltenen Einzeifasern übersteigt.According to the invention, the fiber band consisting of the effect fiber material is to be dissolved in time in the air stream in such a way that the fiber band does not impair the fiber orientation of the individual fibers detached from the basic fiber material. This is achieved according to the invention in that the feed opening is formed by the end of a fiber feed channel for the effect fiber material, the length of which exceeds the maximum staple length of the single fibers contained in the effect fiber material.

Damit sich der Spinnunterdruck in optimaler Weise im zweiten Faserspeisekanal auswirken kann, so daß auch bei relativ niedrigem Spinnunterdruck ein sicheres Auflösen des als Faserband dem Luftstrom ausgesetzten Effekt-Fasermaterials erzielt wird, ist vorteilhafterweise vorgesehen, daß der Faserspeisekanal für das Effekt-Fasermaterial im wesentlichen in Längsrichtung des Faserspeisekanals für das Grund-Fasermaterial in diesen einmündet. Wenn der Faserspeisekanal für das Grund-Fasermaterial tangential von einer Auflösewalze ausgeht, so bildet gemäß einer bevorzugten Ausführung des Erfindungsgegenstandes der Faserspeisekanal für das Effekt-Fasermaterial die rückwärtige Verlängerung des Faserspeisekanals für das Grund-Fasermaterial.So that the spinning vacuum can have an optimal effect in the second fiber feed channel, so that even at a relatively low spinning vacuum a reliable dissolution of the effect fiber material exposed to the air stream is achieved, it is advantageously provided that the fiber feed channel for the effect fiber material is essentially in Longitudinal direction of the fiber feed channel for the basic fiber material opens into it. If the fiber feed channel for the base fiber material starts tangentially from an opening roller, then according to a preferred embodiment of the subject matter of the invention, the fiber feed channel for the effect fiber material forms the rearward extension of the fiber feed channel for the base fiber material.

Damit das Effekt-Fasermaterial nicht zu fein aufgelöst wird, sondern auch nach der pneumatischen Ablösung vom Faserband in Büschelform verbleibt, ist vorgesehen, daß das Effekt-Fasermaterial dem Grund-Fasermaterial auf dessen Transportweg zwischen der Auflösewalze und dem Offenend-Spinnelement zugeführt wird. Um dennoch eine frühe Zuführung und damit eine gute Durchmischung zu erreichen, kann in weiterer Ausgestaltung des Erfindungsgegenstandes vorgesehen sein, daß der Innenraum des Auflösewalzengehäuses im Bereich des Beginns des Faserspeisekanals für das Grund-Fasermaterial eine Erweiterung aufweist, in welche der Faserspeisekanal für das Effekt-Fasermaterial tangential zur Auflösewalze einmündet.So that the effect fiber material is not dissolved too finely, but also remains in tufts after the pneumatic detachment from the fiber sliver, it is provided that the effect fiber material is fed to the base fiber material on its transport path between the opening roller and the open-end spinning element. In order to achieve early feeding and thus thorough mixing, it can be provided in a further embodiment of the subject matter of the invention that the interior of the opening roller housing in the area of the start of the fiber feed channel for the basic fiber material has an extension into which the fiber feed channel for the effect Fiber material opens tangentially to the opening roller.

Es hat sich gezeigt, daß bei unveränderter Vorrichtung auch ein normales Garn ohne Effekte gesponnen werden kann, indem der Zuführöffnung kein Fasermaterial zugeführt wird. Die durch die Zuführöffnung angesaugte Luft beeinträchtigt den normalen Spinnprozeß nicht. Falls es zur besseren Steuerung der Luftverhältnisse jedoch trotzdem als zweckdienlich angesehen wird, kann in weiterer Ausgestaltung der erfindungsgemäßen Vorrichtung auch vorgesehen werden, daß der Zuführöffnung ein Verschlußorgan zugeordnet ist. Vorteilhafterweise ist dieses im Bereich des unaufgelösten Faserbandes angeordnet, damit bei Herstellung eines Effektgarnes hier keine aus dem Faserband bereits herausgelösten Fasern hängenbleiben können.It has been shown that, with the device unchanged, a normal yarn can also be spun without effects by not feeding any fiber material into the feed opening. The air sucked in through the feed opening does not impair the normal spinning process. If, however, it is considered useful for better control of the air conditions, it can also be provided in a further embodiment of the device according to the invention that a closure member is assigned to the feed opening. This is advantageously arranged in the area of the undissolved sliver, so that when a fancy yarn is being produced, no fibers that have already been detached from the sliver can get stuck here.

Vorteilhafterweise ist der Zuführeinrichtung ein einstellbarer Antrieb zugeordnet, so daß sich die konstante Zuführgeschwindigkeit des Effekt-Fasermaterials gegenüber dem Grund-Fasermaterial in unterschiedlicher Weise festlegen läßt.An adjustable drive is advantageously assigned to the feed device, so that the constant feed speed of the effect fiber material can be determined in different ways compared to the base fiber material.

Als Zuführeinrichtung für das Effekt-Fasermaterial kann erfindungsgemäß ein Walzenpaar oder auch ein Streckwerk Anwendung finden, wobei der Verzug im Streckwerk so festgelegt ist, daß das im Streckwerk verzogene Faserband nicht zu Einzelfasern aufgelöst wird, sondern auch bei Verlassen des Streckwerkes einen Faserverband bildet, damit die Ablösung von Faserbüschein allein pneumatisch durch einen Luftstrom erfolgt.According to the invention, a pair of rollers or a drafting device can be used as the feeding device for the effect fiber material, the distortion in the drafting device being determined in such a way that the fiber band warped in the drafting device is not broken down into individual fibers, but also forms a fiber structure when leaving the drafting device, so that The detachment of fiber bundles is done pneumatically by an air flow.

Um die Effektvielfalt vergrößern zu können, ist es möglich, auch mehrere Zuführvorrichtungen und Zuführöffnungen zum Zuführen von Effekt-Fasermaterial in den Faserspeisekanal vorzusehen.In order to be able to increase the variety of effects, it is also possible to provide a plurality of feed devices and feed openings for feeding effect fiber material into the fiber feed channel.

Die vorliegende Erfindung ermöglicht ohne Bandpräparierung und Zufallsteuerung, daß ein verschiebefestes Effektgarn, insbesondere ein Garn mit Farbeffekten, auf einfache Weise hergestellt werden kann, wobei die Effekte hinsichtlich Folge und Größe dem Zufall überlassen sind. Die Auflösung des Effekt-Fasermaterials erfolgt nicht mechanisch, so daß keine übliche Auflösevorrichtung für das Effekt-Fasermaterial erforderlich ist. Wenn das vorgelegte Fasermaterial für eine direkte pneumatische Auflösung noch zu stark ist, kann das Walzenpaar der Zuführeinrichtung durch das Ausgangswalzenpaar eines üblichen Streckwerkes ausgebildet sein, welches das vorgelegte Fasermaterial jedoch nur so weit verzieht, daß ein noch geschlossenes, d.h. ununterbrochenes Faserband aus diesem Streckwerk austritt. Dieses Faserband wird sodann allein pneumatisch aufgelöst. Hierdurch wird ein unregelmäßiges Auflösen des bandförmigen Effekt-Fasermaterials zu Faserbüscheln erreicht, ohne daß spezielle, unregelmäßig steuerbare und antreibbare Auflöseeinrichtungen benötigt werden. Somit ist die erfindungsgemäße Vorrichtung sehr einfach im Aufbau. Dabei ist es bei günstiger Ausgestaltung der erfindungsgemäßen Vorichtung auch nicht erforderlich, den Spinnunterdruck, welcher den die Auflösung des Faserbandes bewirkenden Luftstrom erzeugt, gegenüber dem normalen Spinnprozeß zu erhöhen, so daß die erfindungsgemäße Vorrichtung nicht nur einfach im Aufbau, sondern darüber hinaus auch wirtschaftlich im Betrieb ist.Without tape preparation and random control, the present invention enables a shift-resistant fancy yarn, in particular a yarn with color effects, to be produced in a simple manner, the effects in terms of sequence and size being left to chance. The effect fiber material is not dissolved mechanically, so that no conventional dissolving device for the effect fiber material is required. If the fiber material presented is still too strong for direct pneumatic dissolution, the pair of rollers of the feed device can be formed by the pair of output rollers of a conventional drafting system, which, however, only warps the fiber material so far that a still closed, i.e. uninterrupted fiber sliver emerges from this drafting system . This sliver is then released pneumatically. This will cause the tape to dissolve irregularly shaped effect fiber material to form tufts of fibers without the need for special, irregularly controllable and drivable dissolving devices. Thus, the device according to the invention is very simple in construction. It is also not necessary with a favorable design of the device according to the invention to increase the spinning vacuum, which generates the air flow causing the dissolution of the sliver, compared to the normal spinning process, so that the device according to the invention is not only simple in construction, but also economical Operation is.

Die Erfindung wird nachstehend anhand von Ausführungsbeispielen und Zeichnungen näher beschrieben, wobei der Einfachheit und der Übersichtlichkeit wegen alle für das Verständnis der Erfindung nicht erforderlichen Einzelheiten in den Zeichnungen weggelassen wurden. Es zeigen:

  • Figur 1 in schematischer Seitenansicht eine erste Ausbildung der erfindungsgemäßen Vorrichtung;
  • Figur 2 in schematischem Querschnitt die Anordnung der Einmündung eines zweiten Faserspeisekanals in den ersten Faserspeisekanal im Zusammenhang mit einer eine Garniturwicklung tragenden Auflösewalze;
  • Figur 3 in schematischer Seitenansicht eine Abwandlung der in Figur 1 gezeigten Vorrichtung;
  • Figur 4 in schematischer Seitenansicht eine Ausbildung der erfindungsgemäßen Vorrichtung mit zwei Liefervorrichtungen für das Effekt-Fasermaterial; und
  • Figur 5 in der Draufsicht die Zuführöffnung des zweiten Faserspeisekanals.
The invention is described in more detail below with reference to exemplary embodiments and drawings, with all the details not necessary for understanding the invention being omitted from the drawings for simplicity and clarity. Show it:
  • Figure 1 is a schematic side view of a first embodiment of the device according to the invention;
  • FIG. 2 shows a schematic cross section of the arrangement of the opening of a second fiber feed channel into the first fiber feed channel in connection with an opening roller carrying a clothing winding;
  • Figure 3 is a schematic side view of a modification of the device shown in Figure 1;
  • Figure 4 is a schematic side view of an embodiment of the device according to the invention with two delivery devices for the effect fiber material; and
  • Figure 5 is a top view of the feed opening of the second fiber feed channel.

Die in Figur 1 gezeigte Offenend-Spinnvorrichtung weist als wesentlichste Elemente ein als Spinnrotor 1 ausgebildetes Spinnelement, eine als Auflösewalze 22 ausgebildete Auflösevorrichtung 2 sowie einen sich von der Auflösewalze 22 zum Spinnrotor 1 erstreckenden Faserspeisekanal 3 für das Grund-Fasematerial 26 auf.The open-end spinning device shown in FIG. 1 has, as the most important elements, a spinning element designed as a spinning rotor 1, a opening device 2 designed as opening roller 22 and a fiber feed channel 3 for the base fiber material 26, which extends from opening roller 22 to spinning rotor 1.

Der Spinnrotor 1 ist in einem Gehäuse 10 angeordnet, das über einen Anschluß 11 an eine nicht gezeigte Unterdruckquelle angeschlossen ist. Das Gehäuse 10 ist mit einem Deckel 12 verschlossen, durch welchen hindurch sich der Faserspeisekanal 3 sowie ein Fadenabzugskanal 4 in das Innere des Spinnrotors 1 erstrecken.The spinning rotor 1 is arranged in a housing 10 which is connected via a connection 11 to a vacuum source, not shown. The housing 10 is closed with a cover 12, through which the fiber feed channel 3 and a thread take-off channel 4 extend into the interior of the spinning rotor 1.

In den Faserspeisekanal 3 für das Grund-Fasermaterial mündet die Zuführöffnung 52 eines Faserspeisekanals 5 für das Effekt-Fasermaterial 7. Vor der Eintrittsmündung 50 dieses Faserspeisekanals 5 ist eine Zuführeinrichtung 6 angeordnet. Dabei ist zwischen der Zuführeinrichtung 6 und dem Faserspeisekanal 5 ein als Lufteintrittsöffnung 51 dienender Abstand vorgesehen.The feed opening 52 of a fiber feed channel 5 for the effect fiber material 7 opens into the fiber feed channel 3 for the base fiber material. A feed device 6 is arranged in front of the inlet mouth 50 of this fiber feed channel 5. In this case, a distance serving as an air inlet opening 51 is provided between the feed device 6 and the fiber feed channel 5.

Die Zuführeinrichtung 6 weist im wesentlichen ein Walzenpaar auf, das aus einer antreibbaren Zuführwalze 60 und einem an dieser elastisch anliegenden Druckroller 61 besteht. Die Zuführwalze 60 wird über einen Übertrieb 62 von einem Motor 63 aus mit konstanter Geschwindigkeit angetrieben.The feed device 6 essentially has a pair of rollers which consists of a drivable feed roller 60 and a pressure roller 61 which rests elastically thereon. The feed roller 60 is driven by a motor 63 at a constant speed via an overdrive 62.

Der in einem Gehäuse 25 angeordneten Auflösewalze 22 wird das Grund-Fasermaterial 26 in üblicher Weise mittels einer Speisevorrichtung 24 zugeführt und durch die Auflösewalze 22 zu Einzelfasern 20 aufgelöst. Durch den am Anschluß 11 des Gehäuses 10 anliegenden Unterdruck wird im Faserspeisekanal 3 ein Transportluftstrom 9 erzeugt. Dieser Transportluftstrom 9 dient als Transportmedium für die die Auflösewalze 22 verlassenden Einzelfasern 20. Darüber hinaus bewirkt dieser Transportluftstrom im Faserspeisekanal 3, daß im Faserspeisekanal 5 ein Effektmaterial-Luftstrom 90 entsteht.The base fiber material 26 is supplied to the opening roller 22 arranged in a housing 25 in the usual way by means of a feed device 24 and is broken up into individual fibers 20 by the opening roller 22. A transport air flow 9 is generated in the fiber feed channel 3 by the negative pressure present at the connection 11 of the housing 10. This transport air flow 9 serves as a transport medium for the individual fibers 20 leaving the opening roller 22. In addition, this transport air flow in the fiber feed channel 3 causes an effect material air flow 90 to be created in the fiber feed channel 5.

Durch die kontinuierlich und gleichförmig angetriebene Zuführeinrichtung 6 wird das Effekt-Fasermaterial in Form eines Faserbandes 7 mit konstanter Geschwindigkeit dem Faserspeisekanal 5 zugeführt. Als Faserband 7 kann hierbei ein etwas gedrehtes Luntenband oder ein ungedrehtes Streckenband Anwendung finden. In beiden Fällen bildet dieses Faserband 7 auch nach Verlassen der Zuführeinrichtung 6 noch einen geschlossenen, d.h. ununterbrochenen Fa serverband. Durch den erwähnten Effektmaterial-Luftstrom 90, der durch die Lufteintrittsöffnung 51 in den Faserspeisekanal 5 eindringt, wird eine starke Sogwirkung auf das voreilende Ende 70 des Faserbandes 7 ausgeübt. Das voreilende Ende 70 flattert im Faserspeisekanal 5 hin und her und wird dabei, wenn es sich bei dem Faserband 7 um ein gedrehtes Faserband handelt, aufgedreht. Dabei werden Einzelfasern und Faserbüschel 71, deren hinteres Ende den Klemmbereich der Zuführeinrichtung 6 verlassen hat, aus dem Faserband 7 unregelmäßig durch die Luft herausgelöst und mit Hilfe des Effektmaterial-Luftstromes 90 durch die Zuführöffnung 52 in den Faserspeisekanal 3 befördert, wo sich die aus dem Faserband 7 herausgelösten Einzelfasern und Faserbüschel 71 mit dem aus dem Grund-Fasermaterial herausgelösten Einzelfasem 20 vermengen und gemeinsam mit den Einzelfasern 20 des aufgelösten Grund-Fasermaterials 26 dem Offenend-Spinnelement, z.B. einem Spinnrotor 1, zugeführt werden. Die Auflösung des Faserbandes 7 erfolgt somit rein pneumatisch, wobei sich der Effekt einzig durch die Faserreibung steuert.Through the continuously and uniformly driven feed device 6, the effect fiber material in the form of a sliver 7 is fed to the fiber feed channel 5 at a constant speed. A slightly twisted sliver band or an untwisted stretch band can be used as the sliver 7. In both cases, this sliver 7 still forms a closed, i.e. after leaving the feed device 6. continuous fiber association. A strong suction effect is exerted on the leading end 70 of the sliver 7 by the aforementioned effect material air flow 90, which penetrates into the fiber feed channel 5 through the air inlet opening 51. The leading end 70 flutters back and forth in the fiber feed channel 5 and is turned open when the fiber sliver 7 is a twisted fiber sliver. Individual fibers and tufts of fibers 71, the rear end of which have left the clamping area of the feed device 6, are irregularly released from the fiber sliver 7 by the air and, with the aid of the effect material air flow 90, are conveyed through the feed opening 52 into the fiber feed channel 3, where they emerge from the Mix sliver 7 of individual fibers and bundles of fibers 71 with single fiber 20 detached from the base fiber material and together with the individual fibers 20 of the dissolved base fiber material 26 the open-end spinning element, for example a spinning rotor 1, are supplied. The sliver 7 is thus purely pneumatic, the effect being controlled solely by the fiber friction.

Durch das unkontrollierte Flattern des voreilenden Endes 70 des Faserbandes 7 werden die Einzelfasem und Faserbüschel 71 in unregelmäßiger Weise pneumatisch aus dem Faserband 7 herausgelöst, so daß diese in Folge und Größe unterschiedlich sind. Deshalb entsteht auch nach der Vereinigung und Durchmischung der Einzelfasern 20 und Faserbüschel 71 kein homogenes Fasergemisch. Somit ist auch das entstehende Effektgarn 40 unregelmäßig gemustert, obwohl keine Effektsteuervorrichtungen vorgesehen sind. Die Zufallsverteilung der Effekte ergibt sich durch das Herauslösen von Fasern und Faserbüschein 71 von selbst.Due to the uncontrolled fluttering of the leading end 70 of the sliver 7, the individual fibers and tufts 71 are pneumatically released from the sliver 7 in an irregular manner, so that they differ in sequence and size. Therefore, even after the union and mixing of the individual fibers 20 and fiber tufts 71, no homogeneous fiber mixture is produced. The resulting fancy yarn 40 is thus also irregularly patterned, although no effect control devices are provided. The random distribution of the effects results automatically from the removal of fibers and fiber bundle 71.

In der geschilderten Weise und mit Hilfe der beschriebenen Vorrichtung können beliebige Fasermaterialien miteinander versponnen werden. Am deutlichsten treten die Effekte jedoch in Erscheinung, wenn dem Spinnrotor 1 über die beiden Faserspeisekanäle 3 und 5 Fasermaterial unterschiedlicher Farben oder Farbtöne zugeführt wird. Auf diese Weise entsteht ein Garn mit ungleichmäßigen Farbeffekten.Any fiber materials can be spun together in the manner described and with the aid of the device described. However, the effects appear most clearly when the spinning rotor 1 is supplied with fiber material of different colors or hues via the two fiber feed channels 3 and 5. On the This creates a yarn with uneven color effects.

Wie Figur 1 zeigt, besitzt der Faserspeisekanal 5 eine solche Länge, daß die Auflösung des Faserbandes 7 zu Einzelfasern und Faserbüschel 71 mit Hilfe des Effektmaterial-Luftstromes 90, d.h. noch im Faserspeisekanal 5, erfolgt, bevor dieser in den Faserspeisekanal 3 mit dem Transportluftstrom 9 einmündet. Das voreilende Ende 70 des Faserbandes 7 ragt somit nicht in den Transportluftstrom, der die aus dem Grund-Fasermaterial 26 herausgelösten Einzelfasern 20 befördert, hinein und kann somit auch den Fasertransport von der Auflösewalze 22 zum Spinnrotor 1 nicht nachteilig beeinflussen. Um dies sicherzustellen, wird die Länge des Faserspeisekanals 5 so gewählt, daß sie die maximale Stapellänge der im Effekt-Fasermaterial enthaltenen Einzelfasern 71 übersteigt. Auf diese Weise wird das bereits zu Einzelfasern 71 aufgelöste Effekt-Fasermaterial mit Hilfe dieses Effektmaterial-Luftstromes 90 in den Transportluftstrom 9 für das Grund-Fasermaterial eingeleitet.As FIG. 1 shows, the fiber feed channel 5 is of such a length that the dissolution of the fiber band 7 into individual fibers and fiber tufts 71 with the aid of the effect material air flow 90, i.e. still in the fiber feed channel 5, before this opens into the fiber feed channel 3 with the transport air flow 9. The leading end 70 of the sliver 7 thus does not protrude into the transport air flow, which conveys the individual fibers 20 detached from the base fiber material 26, and thus cannot adversely affect the fiber transport from the opening roller 22 to the spinning rotor 1. To ensure this, the length of the fiber feed channel 5 is selected so that it exceeds the maximum stack length of the individual fibers 71 contained in the effect fiber material. In this way, the effect fiber material, which has already been broken down into individual fibers 71, is introduced into the transport air stream 9 for the base fiber material with the aid of this effect material air flow 90.

In Abwandlung der geschilderten Vorrichtung und des beschriebenen Verfahrens kann aber auch, wenn die Platzverhältnisse beengt sind, vorgesehen sein, daß der Faserspeisekanal 5 kürzer als im vorerwähnten Beispiel ist. Das voreilende Ende 70 des Faserbandes 7 soll dabei jedoch nur so weit in den Faserspeisekanal 3 hineinragen, daß der Fasertransport zwischen der Auflösewalze 2 und dem Spinnrotor 1 nicht wesentlich gestört ist. Es hat sich gezeigt, daß dies - ausreichender Innendurchmesser des Faserspeisekanals 3 vorausgesetzt - in der Regel dann der Fall ist, wenn der Faserspeisekanal 5 eine solche Mindestlänge besitzt, die größer als die minimale Stapellänge der im Effekt-Fasermaterial enthaltenen Einzelfasern 71 ist.In a modification of the device described and the method described, it can also be provided that the fiber feed channel 5 is shorter than in the above-mentioned example when the space is limited. The leading end 70 of the sliver 7 should, however, only protrude so far into the fiber feed channel 3 that the fiber transport between the opening roller 2 and the spinning rotor 1 is not significantly disturbed. It has been shown that this - provided the inside diameter of the fiber feed channel 3 is sufficient - is generally the case when the fiber feed channel 5 has a minimum length which is greater than the minimum staple length of the individual fibers 71 contained in the effect fiber material.

Durch verschiedene zusätzliche Maßnahmen kann dabei erreicht werden, daß die Faserorientierung der aus den beiden Fasermaterial-Vorlagen herausgelösten Einzelfasern 20 und Faserbüschel 71 nicht gestört wird. So wird gemäß Figur 3, die eine Abwandlung der in Figur 1 gezeigten Vorrichtung zeigt, vorgesehen, daß der Transportluftstrom 9 und der Effektmaterial-Luftstrom 90 in den Faserspeisekanälen 3 und 5 bereits vor ihrer Vereinigung im wesentlichen die gleiche Strömungsrichtung aufweisen. Da in dem in Figur 3 gezeigten Ausführungsbeispiel der Faserspeisekanal 5 die rückwärtige Verlängerung des Faserspeisekanals 3 bildet, mündet der Faserspeisekanal 5 im wesentlichen in Strömungsrichtung des Transportluftstromes 9 in den Faserspeisekanal 3 ein. Dasselbe wird aber auch erreicht, wenn in Abwandlung der in Figur 1 gezeigten Vorrichtung der Winkela zwischen den beiden Faserspeisekanälen 3 und 5 entsprechend groß gewählt wird.Various additional measures can be taken to ensure that the fiber orientation of the individual fibers 20 and fiber tufts 71 detached from the two fiber material templates is not disturbed. Thus, according to FIG. 3, which shows a modification of the device shown in FIG. 1, it is provided that the transport air flow 9 and the effect material air flow 90 in the fiber feed channels 3 and 5 have essentially the same flow direction even before they are combined. Since in the exemplary embodiment shown in FIG. 3 the fiber feed channel 5 forms the rearward extension of the fiber feed channel 3, the fiber feed channel 5 opens into the fiber feed channel 3 essentially in the direction of flow of the transport air flow 9. However, the same is also achieved if, in a modification of the device shown in FIG. 1, the angle between the two fiber feed channels 3 and 5 is chosen to be correspondingly large.

Einerseits wird eine gute Durchmischung von Grund-Fasermaterial 26 und Effekt-Fasermaterial gewünscht, damit es nicht durch zu große Faserbüschel 71, die dem Spinnelement (Spinnrotor 1) zugeführt werden, zu Fadenbrüchen kommt. Andererseits soll diese Durchmischung jedoch auch wieder nicht zu groß sein, da sonst die Mischung zu gleichmäßig wird und es zu keinen Effekten mehr kommt. Aus diesem Grund erfolgt die Zuführung des Effekt-Fasermaterials in den Transportluftstrom für das Grund-Fasermaterial 26 nach dessen Ablösung von der Auflöseeinrichtung 2.On the one hand, thorough mixing of the basic fiber material 26 and the effect fiber material is desired so that thread breaks do not occur due to excessively large tufts of fibers 71 which are fed to the spinning element (spinning rotor 1). On the other hand, however, this mixing should not be too great, since otherwise the mixture will be too uniform and there will be no more effects. For this reason, the effect fiber material is fed into the transport air stream for the base fiber material 26 after it has been detached from the dissolving device 2.

Die bereits erwähnte Figur 3 zeigt eine sehr frühe Zuführung des Effekt-Fasermaterials in den genannten Transportluftstrom für das Grund-Fasermaterial 26, nämlich tangential in das Gehäuse 25 der Auflösewalze 22. Der die Auflösewalze 22 aufnehmende Innenraum besitzt im Bereich des Beginns des Faserspeisekanals 3 für das Grund-Fasermaterial 26 eine Erweiterung 27, so daß sich die Einzelfasern 20 des Grund-Fasermaterials 26 bereits aus der Garnitur der Auflösewalze 22 lösen können, bevor sie den Innenraum des Auflösewalzengehäuses 25 verlassen. In diese Erweiterung 27 des Innenraums mündet gemäß Figur 3 der Faserspeisekanal 5 für das Effekt-Fasermaterial 7 so ein, daß die Fasern und Faserbüschel 71 des Effekt-Fasermaterials zwar noch in das Auflösewalzengehäuse 25 gelangen, ohne jedoch in Kontakt mit der Garnitur der Auflösewalze 22 zu gelangen.The already mentioned FIG. 3 shows a very early feeding of the effect fiber material into the above-mentioned transport air flow for the basic fiber material 26, namely tangentially into the housing 25 of the opening roller 22. The interior space receiving the opening roller 22 has in the area of the beginning of the fiber feed channel 3 for the base fiber material 26 is an extension 27, so that the individual fibers 20 of the base fiber material 26 can already detach from the clothing of the opening roller 22 before they leave the interior of the opening roller housing 25. According to FIG. 3, the fiber feed channel 5 for the effect fiber material 7 opens into this extension 27 of the interior in such a way that the fibers and fiber tufts 71 of the effect fiber material still get into the opening roller housing 25, but without coming into contact with the clothing of the opening roller 22 to get.

Um evtl. bewirkte Störungen der Faserorientierung, die durch das Vereinigen des Transportluftstromes 9 und des Effektmaterial-Luftstromes 90 verursacht worden sind, wieder zu beheben, ist gemäß Figur 3 vorgesehen, daß der Faserspeisekanal 3 für das Grund-Fasermaterial 26 einen ersten konichen Kanalabschnitt 30 und einen zweiten, im wesentlichen zylindrischen Kanalabschnitt 31 aufweist. Dabei mündet die Zuführöffnung 52 des Faserspeisekanals 5 für das Effekt-Fasermaterial 7 im Bereich des ersten, d.h. des sich verjüngenden, Kanalabschnittes 30 in den Faserspeisekanal 3. Auf diese Weise wird der Transportluftstrom 9 zunächst beschleunigt, wobei außer den Einzelfasern 20 des Grund-Fasermaterials 26 auch die mit Hilfe des Effektmaterial-Luftstromes 90 in den sich beschleunigenden Transportluftstrom gelieferten Einzelfasern 71 des Effekt-Fasermaterials gestreckt werden. Damit dies geschehen kann, wird durch die beschriebene Längenfestlegung für den Faserspeisekanal 5 sichergestellt, daß das voreilende Ende 70 des Faserbandes 7 sich maximal bis in den konischen Kanalabschnitt 30 des Faserspeisekanals 3 erstreckt, so daß die Ablösung der Fasern 71 vor Beendigung der Beschleunigung des TransportLuftstromes 9 erfolgt. Der vereinigte Luftstrom gelangt sodann in den zylindrischen Kanalabschnitt 31, den der Luftstrom im wesentlichen mit konstanter Geschwindigkeit durchfließt. Die Einzelfasern 20 und Faserbüschel 71, welche aufgrund ihrer Trägheit der Luftbescheunigung nur verzögert folgen können, werden in dieser Beruhigungsphase im zylindrischen Kanalabschnitt 31 nachbeschleunigt, wobei ihre Streckung und parallele Orientierung verbessert wird.In order to remedy any disturbances in the fiber orientation caused by the combination of the transport air flow 9 and the effect material air flow 90, it is provided according to FIG. 3 that the fiber feed channel 3 for the base fiber material 26 has a first conical channel section 30 and has a second, substantially cylindrical channel section 31. The feed opening 52 of the fiber feed channel 5 for the effect fiber material 7 opens in the region of the first, i.e. of the tapering, channel section 30 into the fiber feed channel 3. In this way, the transport air flow 9 is first accelerated, whereby in addition to the individual fibers 20 of the basic fiber material 26, the individual fibers 71 of the effect supplied with the effect material air flow 90 into the accelerating transport air flow -Fiber material to be stretched. In order for this to happen, the described length setting for the fiber feed channel 5 ensures that the leading end 70 of the fiber band 7 extends as far as possible into the conical channel section 30 of the fiber feed channel 3, so that the fibers 71 become detached before the acceleration of the transport air flow has ended 9 takes place. The combined air flow then passes into the cylindrical channel section 31, through which the air flow flows essentially at a constant speed. The individual fibers 20 and fiber tufts 71, which due to their inertia can only delay the acceleration of the air, are subsequently accelerated in the calming phase in the cylindrical channel section 31, their stretching and parallel orientation being improved.

Die beschriebene Vorrichtung kann in verschiedener Weise durch Austausch von Merkmalen durch Äquivalente oder andere Kombinationen abgewandelt werden. Wie Figur 3 zeigt, spielt z.B. die spezielle Ausbildung der Zuführeinrichtung 6 keine Rolle. So kann statt des durch die Zuführwalze 60 und den Druckroller 61 gebildeten Walzenpaares auch ein Streckwerk vorgesehen sein (siehe Eingangswalzenpaar 64 und Ausgangswalzenpaar 65), das das zugeführte Faserband 7 auf eine solche Stärke reduziert, daß dieses in dem Luftstrom im zweiten Faserspeisekanal 5 - und evtl. im ersten Faserspeisekanal 3, wenn das voreilende Ende 70 des Faserbandes 7 bis in diesen ersten Faserspeisekanal 3 hineinreicht - zu Einzelfasern und Faserbüscheln 71 aufgelöst werden kann. Die Geschwindigkeitsverhältnisse zwischen dem Eingangswalzenpaar 64 und dem Ausgangswalzenpaar 65 - und evtl. weiteren Walzenpaaren - sind dabei so gewählt, daß das zugeführte Faserband 7 zwar auf die gewünschte Stärke reduziert, aber keinesfalls zu Einzelfasem und Faserbüschein 71 aufgelöst wird.The described device can be modified in various ways by exchanging features with equivalents or other combinations. As FIG. 3 shows, the special design of the feed device 6, for example, is irrelevant. Thus, instead of the pair of rollers formed by the feed roller 60 and the pressure roller 61, a drafting device can also be provided (see a gangswalzenpaar 64 and output roller pair 65), which reduces the supplied sliver 7 to such a thickness that this in the air flow in the second fiber feed channel 5 - and possibly in the first fiber feed channel 3, if the leading end 70 of the sliver 7 into this first fiber feed channel 3rd reaches into - individual fibers and fiber bundles 71 can be resolved. The speed ratios between the input roller pair 64 and the output roller pair 65 - and possibly other roller pairs - are selected so that the sliver 7 fed is reduced to the desired thickness, but is in no way resolved into individual fibers and fiber bundles 71.

Ebenso wie die spezielle Ausbildung der Zuführeinrichtung im Prinzip ohne Belang ist, kann auch das Offenend-Spinnelement nach Belieben ausgebildet sein. In Figur 3 ist deshalb als Ausführungsbeispiel eines solchen Spinnelementes ein Paar Friktionswalzen 13 dargestellt. Hierbei ist der von den Spinnelementes angesaugte Luftstrom schwächer als beim Rotorspinnen. Aus diesem Grunde kann die Luftströmung auch gegebenenfalls durch mittels einer Injektordüse zugeführte Druckluft verstärkt werden (siehe Druckluftdüsen 58 und 59).Just as the special design of the feed device is in principle irrelevant, the open-end spinning element can also be designed as desired. A pair of friction rollers 13 is therefore shown in FIG. 3 as an exemplary embodiment of such a spinning element. The air flow sucked in by the spinning element is weaker than in rotor spinning. For this reason, the air flow can also be increased if necessary by compressed air supplied by means of an injector nozzle (see compressed air nozzles 58 and 59).

Wenn auch bei den zuvor beschriebenen Ausführungsbeispielen stets Faserspeisekanäle 3 und 5 vorgesehen sind, so kann dennoch der Faserspeisekanal 5 für das Effekt-Fasermaterial 7 unter Umständen entfallen. Das bandförmige Effekt-Fasermaterial wird dann durch eine Zuführöffnung 52 in den Faserspeisekanal 3 eingeführt, wobei durch einen entsprechend gewählten Abstand der Zuführeinrichtung 6 von der Zuführöffnung 52 und damit vom Faserspeisekanal 3 sichergestellt wird, daß das Faserband 7 nur soweit in den Faserspeisekanal 3 hineinreicht, daß dort eine ordnungsgemäße Auflösung des Effekt-Fasermaterials gewährleistet ist.If fiber feed channels 3 and 5 are always provided in the exemplary embodiments described above, the fiber feed channel 5 for the effect fiber material 7 can still be omitted under certain circumstances. The band-shaped effect fiber material is then introduced into the fiber feed channel 3 through a feed opening 52, with a correspondingly selected distance of the feed device 6 from the feed opening 52 and thus from the fiber feed channel 3 ensuring that the fiber ribbon 7 only extends so far into the fiber feed channel 3, that proper dissolution of the effect fiber material is guaranteed there.

Wie Figur 2 zeigt, besitzt die Auflösewalze 22 eine sägezahnartige Gamiturwicklung 8. Durch die schraubenartigen Gänge der Garniturwicklung 8 wandert die Luft von der einen Stirnseite 28 der Auflösewalze 22, an welcher sich das bei der Rotation (Pfeil 21) der Auflösewalze 22 voreilende Ende 80 der Gamiturwicklung 8 befindet, in Richtung zu der Stirnseite 23, an welcher sich das nacheilende Ende 81 der Garniturwicklung 8 befindet, oder umgekehrt. Die Richtung, in welcher Luft seitlich abwandert, hängt davon ab, ob die Umfangsgeschwindigkeit der Auflösewalze 22 größer als die Luftgeschwindigkeit ist oder umgekehrt. Die Luftgeschwindigkeit nimmt somit über den Querschnitt in Richtung zur Stirnseite 23 oder 28 der Auflösewalze 22 zu. Um diese größere Luftgeschwindigkeit und die dadurch bedingte Injektorwirkung voll für die Auflösung des Effekt-Fasermaterials ausnutzen zu können, erfolgt die Zuführung des Effekt-Fasermaterials in den Transportluftstrom 9 für das Grund-Fasermaterial 26, bezogen auf den Querschnitt, an der Stelle der größten Luftgeschwindigkeit. Gemäß Figur 2 soll dies bei der Stirnseite 23 der Auflösewalze 22 sein, weshalb der Faserspeisekanal 5 bei diesem Ausführungsbeispiel in Richtung zu der Stirnseite 23 der Auflösewalze 2 versetzt in den Faserspeisekanal 3 einmündet. Auf diese Weise mündet die Zuführöffnung 52 im Bereich der größeren Strömungsgeschwindigkeit in den Faserspeisekanal 3 ein, nämlich auf der Seite des Faserspeisekanals 3, zu welcher die Luft durch die Gamiturwicklung 8 gefördert wird.As FIG. 2 shows, the opening roller 22 has a sawtooth-like thread winding 8. The screw-like gears of the clothing winding 8 move the air from one end face 28 of the opening roller 22, at which the end 80 leading the rotation (arrow 21) of the opening roller 22 the clothing winding 8 is in the direction of the end face 23, on which the trailing end 81 of the clothing winding 8 is located, or vice versa. The direction in which air migrates laterally depends on whether the peripheral speed of the opening roller 22 is greater than the air speed or vice versa. The air speed thus increases over the cross section in the direction of the end face 23 or 28 of the opening roller 22. In order to be able to fully utilize this higher air speed and the injector effect caused by it to dissolve the effect fiber material, the effect fiber material is fed into the transport air stream 9 for the basic fiber material 26, based on the cross section, at the location of the greatest air speed . According to FIG. 2, this should be at the front side 23 of the opening roller 22, which is why the fiber feed channel 5 in this embodiment opens into the fiber feeding channel 3 offset toward the front side 23 of the opening roller 2. In this way, the feed opening 52 opens into the fiber feed channel 3 in the region of the higher flow velocity, namely on the side of the fiber feed channel 3 to which the air is conveyed through the thread winding 8.

Wenn der Faserspeisekanal 5 dieselbe Breite wie der Faserspeisekanal 3 aufweist, so wird ein Bandführer 66 (Figur 5) vor der Einführung des Faserbandes 7 in den zweiten Faserspeisekanal 5 so angeordnet, daß dieser das Faserband 7 auf der Seite des Faserspeisekanals 5 hält, auf welcher sich die größere Luftgeschwindigkeit im Faserspeisekanal 3 ausbildet.If the fiber feed channel 5 has the same width as the fiber feed channel 3, a tape guide 66 (FIG. 5) is arranged before the introduction of the fiber ribbon 7 into the second fiber feed channel 5 so that it holds the fiber ribbon 7 on the side of the fiber feed channel 5 on which the greater air speed forms in the fiber feed channel 3.

Durch die beschriebene asymmetrische Zufuhr des Effekt-Fasermaterials 7 in einen Querschnittsbereich des Faserspeisekanal 3 mit erhöhter Strömungsgeschwindigkeit wird eine intensive Sogeinwirkung auf das Faserband 7 erreicht, da die Strömungsgeschwindigkeit wesentlich höher als die Zuführgeschwindigkeit des Faserbandes 7 ist, so daß der normale, am Spinnelement anliegende Spinnunterdruck auch für die Auflösung des Faserbandes 7 ausreicht.Due to the described asymmetrical supply of the effect fiber material 7 in a cross-sectional area of the fiber feed channel 3 with increased flow speed, an intensive suction effect on the fiber sliver 7 is achieved, since the flow speed is substantially higher than the feed speed of the fiber sliver 7, so that the normal, adjacent to the spinning element Spinning vacuum is also sufficient for the dissolution of the sliver 7.

Es ist zur Erzielung unterschiedlicher Effektgarne auch möglich, die Zuführeinrichtung 6 so mit dem Motor 63 (Figur 1) zu verbinden, daß das Übersetzungsverhältnis auf unterschiedliche Werte eingestellt werden kann. Dies kann beispielsweise durch Austausch von Zahnrädern auf den Antriebswellen von Motor 63 und Zuführwalze 60 geschehen. Je nach der gewünschten Intensität der Effekte kann somit für die Zuführeinrichtung eine höhere oder eine niedrigere Zuführgeschwindigkeit gewählt werden, die während des Produktionsprozesses dann jedoch konstant bleibt.To achieve different fancy yarns, it is also possible to connect the feed device 6 to the motor 63 (FIG. 1) in such a way that the transmission ratio can be set to different values. This can be done, for example, by replacing gear wheels on the drive shafts of motor 63 and feed roller 60. Depending on the desired intensity of the effects, a higher or a lower feed speed can thus be selected for the feed device, but this then remains constant during the production process.

Es kann auch vorgesehen werden, daß zur Zuführung von Effekt-Fasermaterial in Form eines weiteren Faserbandes 72 außer dem Faserspeisekanal 5 mit seiner Zuführeinrichtung 6 ein weiterer Faserspeisekanal 57 mit einer Lufteintrittsöffnung 53 und einer Zuführöffnung 56 und einer Zuführeinrichtung 67 in den Faserspeisekanal 3 einmündet. Auch die Zuführeinrichtung 67 besteht aus einer Zuführwalze 670 und einem Druckroller 671. Die Zuführwalze 670 wird mittels eines Übertriebes 620 vom Motor 63 aus angetrieben. Damit die Effekte, die durch das mittels der Zuführeinrichtung 6 zugeführte Faserband 7 erzeugt werden, und jene, die durch das mittels der Zuführeinrichtung 67 zugeführte Faserband 72 erzeugt werden, unterschiedlich stark sind, werden die Zuführeinrichtungen 6 und 67 durch geeignete Festlegung des Übersetzungsverhältnisses vom Motor 63 aus mit unterschiedlicher konstanter Geschwindigkeit angetrieben.It can also be provided that in addition to the fiber feed channel 5 with its feed device 6, a further fiber feed channel 57 with an air inlet opening 53 and a feed opening 56 and a feed device 67 opens into the fiber feed channel 3 in order to feed effect fiber material in the form of a further sliver 72. The feed device 67 also consists of a feed roller 670 and a pressure roller 671. The feed roller 670 is driven by the motor 63 by means of an overdrive 620. In order that the effects which are produced by the sliver 7 fed by means of the feed device 6 and those which are produced by the sliver 72 which is fed by means of the feed device 67 are different, the feed devices 6 and 67 become from the motor by suitably determining the transmission ratio 63 driven out at different constant speeds.

Das Effekt-Fasermaterial verschiedener Faserbänder 7 und 72 kann je nach Platzverhältnissen dem Faserspeisekanal 3 durch mehrere oder eine einzige Zuführöffnung zugeführt werden. Im letzteren Fall erfolgt die Zusammenführung des aufgelösten oder noch aufzulösenden Effekt-Fasermaterials spätestens an der gemeinsamen Zuführöffnung.The effect fiber material of different fiber tapes 7 and 72 can be fed to the fiber feed channel 3 through several or a single feed opening, depending on the space available. In the latter case, the dissolved or still to be dissolved effect fiber material is brought together at the latest at the common feed opening.

Um definierte Auflöseverhältnisse zu erzielen, kann das Faserband 7 und/oder 72, während es der Luftströmung ausgesetzt wird, durch die Zuführeinrichtung 6 bzw. 67 zurückgehalten werden. Es kann aber auch zu diesem Zweck zwischen der Zuführeinrichtung 6 bzw. 67 und dem ersten Faserspeisekanal 3 eine Rückhalte- oder Abrißkante 54 vorgesehen werden. Diese befindet sich gemäß Figur 1 zwischen Faserspeisekanal 5 und Faserspeisekanal 3. Auch gemäß Figur 4 ist an dieser Stelle eine Abrißkante 54 vorgesehen, während eine als Stift ausgebildete Abrißkante 55 an einer Knickstelle im Faserspeisekanal 57 vorgesehen ist. Eine solche Abrißkante 54 bzw. 55 ist sehr wichtig, da hierdurch die Einwirkung der Luft auf das freie Ende des Faserbandes 7 bzw. 72 begrenzt wird. Hierdurch wird vermieden, daß zu große Faserbatzen in das Spinnelement gelangen können, was zu Fadenbrüchen führen könnte.In order to achieve defined resolution ratios, the sliver 7 and / or 72 can be retained by the feeder 6 or 67 while being exposed to the air flow. For this purpose, however, a retaining or tear-off edge 54 can be provided between the feed device 6 or 67 and the first fiber feed channel 3. According to FIG. 1, this is located between fiber feed channel 5 and fiber feed channel 3. Also according to FIG. 4, a tear-off edge 54 is provided at this point, while a tear-off edge 55 designed as a pin is provided at a kink in the fiber feed channel 57. Such a tear-off edge 54 or 55 is very important, since it limits the effect of the air on the free end of the sliver 7 or 72. In this way it is avoided that too large pieces of fiber can get into the spinning element, which could lead to thread breaks.

Wenn mit der beschriebenen Offenend-Spinnvorrichtung normales Garn ohne Effekte hergestellt werden soll, so genügt es, die Zuführung von Effekt-Fasermaterial durch die Zuführöffnung 52 und/oder 56 zu unterbrechen. Dies geschieht durch Stillsetzen des Antriebs der Zuführeinrichtung 6 und/oder 67. Die Lufteintrittsöffnung 51 bzw. 53, die während der Herstellung von Effektgarnen zur Erzeugung eines Transport- und Auflöseluftstromes erforderlich ist, hat dabei keine Auswirkungen auf den Transport der aus dem Grund-Fasermaterial herausgelösten Einzelfasern 20. Sollte jedoch aus Gründen des Lufthaushalts in der Offenend-Spinnvorrichtung hier eine Luftzufuhr nicht erwünscht sein, so kann, wie dies Figur 3 am Beispiel des Faserspeisekanals 5 schematisch zeigt, dem Faserspeisekanal 5 auch ein steuerbares Verschlußorgan 91 zugeordnet sein, das in seiner Schließstellung eine solche Luftzufuhr unterbindet. Die Ausbildung des Verschlußorganes und seine Steuerung können je nach Bedarf unterschiedlich ausgebildet sein. Um den Transport der aus dem Faserband 7 herausgelösten Einzelfasern 71 zum Faserspeisekanal 3 nicht zu beeinträchtigen und um die Gefahr von Faserstauchungen auszuschließen, befindet sich bei der in Figur 3 gezeigten Ausführung das Verschlußorgan 91 in jenem Bereich des Faserspeisekanal 3, in welchem das Faserband 7 noch nicht zu Einzelfasern und Faserbüscheln 71 aufgelöst worden ist.If normal yarn without effects is to be produced with the described open-end spinning device, it is sufficient to interrupt the supply of effect fiber material through the supply opening 52 and / or 56. This is done by stopping the drive of the feed device 6 and / or 67. The air inlet opening 51 or 53, which is required during the production of fancy yarns to produce a transport and dissolving air flow, has no effect on the transport of the basic fiber material Detached individual fibers 20. However, if an air supply is not desired here for reasons of air balance in the open-end spinning device, then, as is shown schematically in FIG. 3 using the example of the fiber feed channel 5, the fiber feed channel 5 can also be assigned a controllable closure member 91, which in its closed position prevents such an air supply. The formation of the closure member and its control can be designed differently as required. In order not to impair the transport of the individual fibers 71 detached from the sliver 7 to the fiber feed channel 3 and to rule out the risk of fiber compression, the closure member 91 in the embodiment shown in FIG. 3 is in that area of the fiber feed channel 3 in which the sliver 7 is still has not been broken down into individual fibers and fiber bundles 71.

Claims (26)

1. Process for the production of a fancy yarn on open-end spinning devices in which sliver-like basic fiber material is opened into individual fibers and is fed to the open-end spinning element in an air stream, characterized in that the fancy-effect fiber material is fed at constant speed in form of a fiber sliver in an air stream and in that fiber tufts are separated by said air stream, whereby the fiber tufts thus separated are fed to the open-end spinning element together with the opened basic fiber material.
2. Process as in claim 1, characterized in that the speed of the air stream is considerably higher than the feeding speed of the fancy-effect fiber material.
3. Process as in claim 1 or 2, characterized in that the fancy-effect fiber material, immediately before being brought into the air stream, is subjected to retention.
4. Process as in one or several of the claims 1 to 3, characterized in that the fancy-effect fiber material is separated in a fancy material air stream into fiber tufts and in that the thus separated fiber tufts are brought by this fancy material air stream into the conveying air stream for basic fiber material.
5. Process as in one or several of the claims 1 to 4, characterized in that the fancy-effect fiber material is brought into the conveying air stream during acceleration of said conveying air stream.
6. Process as in claim 5, characterized in that the separation of the fancy-effect fiber material takes place before the end of the acceleration of the conveying air stream.
7. Process as in one or several of the claims 1 to 6, characterized in that the conveying air stream and the fancy material air stream are flowing in essentially the same direction before they join together.
8. Process as in one or several of the claims 1 to 7, characterized in that the fancy-effect fiber material is fed into the air stream conveying the basic fiber material at the point of the profile where air speed is greatest.
9. Process as in one or several of the claims 1 to 8, characterized in that the constant feeding speed of the fancy-effect fiber material is determined by the desired effects to be obtained.
10. Process as in one or several of the claims 1 to 9, characterized in that the fancy-effect fiber material is fed in form of several fiber slivers.
11. Process as in claim 10, characterized in that the fiber slivers consisting of fancy-effect fiber material are brought into the conveying air stream at different constant speeds.
12. Device to carry out the process as in one or several of the claims 1 to 11, with an opening device to open the basic fiber material and a fiber feeding channel to feed the basic material from the opening device to the open-end spinning element as well as with a feeding device for the feeding of fancy-effect fiber material, characterized in that the fiber feeding channel (3) is provided with a feeding opening (52, 56) through which the fancy-effect fiber material is fed to the fiber feeding channel (3, 5) at constant speed by the feeding device (6, 67).
13. Device as in claim 12, characterized in that a retaining edge (54, 55) is provided between the feeding device (6, 67) and the fiber feeding channel (3).
14. Device as in claim 12 or 13, characterized in that the fiber feeding channel (3) has profile surfaces with varying flow speeds of the air stream it carries and in that the feeding opening (52, 56) is located in the area of higher airflow speed in the fiber feeding channel (3).
15. Device as in claim 14, characterized by a sliver guide (66) which holds the fiber sliver (7) in the zone of higher airflow speed.
16. Device as in one or several of the claims 12 to 15, equipped with a fiber feeding channel which is provided with a tapering segment followed by a cylindrical segment, characterized in that the feeding opening (52, 56) is located in the tapering segment of the fiber feeding channel (3).
17. Device as in claim 16, characterized in that the feeding opening (52, 56) is formed by the end of a fiber feeding channel (5, 57) for the fancy-effect fiber material, whereby the length of said channel exceeds the maximum staple length of the individual fibers (71) contained in the fancy-effect fiber material.
18. Device as in claim 17, characterized in that the fiber feeding channel (5, 57) for the fancy-effect fiber material lets out into the fiber feeding channel (3) for the basic fiber material essentially in the longitudinal sense of the latter.
19. Device as in claim 18, in which the opening device is equipped with an opening roller and the fiber feeding channel for the basic fiber material is tangent to the opening roller, characterized in that the fiber feeding channel (5, 57) for the fancy-effect fiber material forms the rear extension of the fiber feeding channel (3) for the basic fiber material.
20. Device as in claim 19, characterized in that the interior of the opening roller housing (25) in the area of the beginning of the fiber feeding channel (3) for the basic fiber material is provided with a widening (27) into which the fiber feeding channel (5, 57) for the fancy-effect fiber material lets out at a tangent.
21. Device as in one or several of the claims 12 to 20, characterized in that the feeding opening (52, 57) is equipped with a closing element (9).
22. Device as in claim 21, characterized in that the closing element (9) is located in the area of the unopened fiber sliver (7, 72)
23. Device as in one or several of the claims 12 to 22, characterized in that the feeding device (6, 67) is equipped with an adjustable drive (62, 63).
24. Device as in one or several of the claims 12 to 23, characterized in that the feeding device (6) consists of a pair of rollers (60, 61).
25. Device as in one or several of the claims 12 to 24, characterized in that the feeding device (6) consists of drawing rollers (64, 65).
26. Device as in one or several of the claims 12 to 25, characterized by several feeding devices (6, 67) and feeding openings (52, 56) for the feeding of fancy-effect fiber material into the fiber feeding channel (3) for the basic fiber material.
EP86113337A 1985-10-16 1986-09-27 Method and apparatus for producing effect yarn on open-end spinning devices Expired EP0218974B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86113337T ATE44292T1 (en) 1985-10-16 1986-09-27 METHOD AND DEVICE FOR THE PRODUCTION OF AN EFFECT YARN ON OPEN-END SPINNING DEVICES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853536827 DE3536827A1 (en) 1985-10-16 1985-10-16 METHOD AND DEVICE FOR PRODUCING AN EFFECT YARN ON OPEN-END SPIDERING DEVICES
DE3536827 1985-10-16

Publications (3)

Publication Number Publication Date
EP0218974A2 EP0218974A2 (en) 1987-04-22
EP0218974A3 EP0218974A3 (en) 1987-11-11
EP0218974B1 true EP0218974B1 (en) 1989-06-28

Family

ID=6283679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86113337A Expired EP0218974B1 (en) 1985-10-16 1986-09-27 Method and apparatus for producing effect yarn on open-end spinning devices

Country Status (6)

Country Link
US (1) US4698962A (en)
EP (1) EP0218974B1 (en)
AT (1) ATE44292T1 (en)
DE (2) DE3536827A1 (en)
HK (1) HK100791A (en)
SG (1) SG86691G (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4108983A1 (en) * 1991-03-19 1992-09-24 Amsler Iro Ag Effect roving - by flocking projected in free flight into gap between spread slippers to form sandwich
DE19915955C2 (en) * 1999-04-09 2001-09-13 Schuller Gmbh Device and method for producing a strand-like fiber composite from glass fibers
DE60310463D1 (en) * 2002-02-14 2007-02-01 Rieter Cz As Method and device for producing a multi-component fancy yarn
CZ20032422A3 (en) * 2003-09-08 2005-07-13 Rieter Cz A. S. Rotor spinning machine for producing flake yarn
DE10348705A1 (en) * 2003-10-16 2005-05-12 Saurer Gmbh & Co Kg Manufacturing effect thread on rotor spinning machine, stores physical data specifying effect thread with machine operational data on readable memory device
DE10348709A1 (en) * 2003-10-16 2005-05-12 Saurer Gmbh & Co Kg Rotor spinning machine
DE10354608A1 (en) * 2003-11-21 2005-06-16 Saurer Gmbh & Co. Kg Process for producing a fancy yarn on an open-end rotor spinning machine and fancy yarn
DE102004047017A1 (en) * 2004-09-28 2006-03-30 Rieter Ingolstadt Spinnereimaschinenbau Ag Yarn, especially effect yarn, production by open-ended spinning, with collection or retention and storage of some of the fibers before release and supply to spinning rotor
CH702456A2 (en) * 2009-12-21 2011-06-30 Amsler Tex Ag Method and apparatus for generating flame yarn on a rotor spinning machine.

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US3523300A (en) * 1966-08-18 1970-08-04 Toray Industries Spinning method and apparatus for manufacturing yarn from textile fibers
US3501907A (en) * 1966-12-20 1970-03-24 Toray Industries Spun yarn and its doubled yarn
DE2138487C3 (en) * 1971-07-31 1979-11-08 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Device for producing fancy yarn by means of an open-end spinning device
DE2364261C3 (en) * 1973-12-22 1982-12-23 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Fiber feeding device for an open-end spinning device working with negative pressure
GB1490756A (en) * 1974-04-03 1977-11-02 Vyzk Ustav Bavlnarsky Method of and apparatus for open-end spinning yarns from staple fibres
DE2427455A1 (en) * 1974-06-07 1975-12-18 Fritz Stahlecker Fibre tow carding device - with feeder formed by oppositely disposed endless belts followed by pneumatic nozzle
IT1055143B (en) * 1976-02-09 1981-12-21 Nuova San Giorgio Spa PROCESS AND EQUIPMENT FOR THE PRODUCTION OF FLAMMED YARNS BY ROTOR SPINNING

Also Published As

Publication number Publication date
ATE44292T1 (en) 1989-07-15
SG86691G (en) 1992-02-14
EP0218974A2 (en) 1987-04-22
HK100791A (en) 1991-12-20
US4698962A (en) 1987-10-13
DE3536827A1 (en) 1987-04-16
DE3664139D1 (en) 1989-08-03
EP0218974A3 (en) 1987-11-11

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