EP3119712B1 - Sliver guide for a drawing frame, and drawing frame - Google Patents
Sliver guide for a drawing frame, and drawing frame Download PDFInfo
- Publication number
- EP3119712B1 EP3119712B1 EP15711110.5A EP15711110A EP3119712B1 EP 3119712 B1 EP3119712 B1 EP 3119712B1 EP 15711110 A EP15711110 A EP 15711110A EP 3119712 B1 EP3119712 B1 EP 3119712B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide
- guide section
- section
- sliver
- accordance
- 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.)
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Links
- 239000000835 fiber Substances 0.000 claims description 52
- 230000000875 corresponding effect Effects 0.000 description 11
- 239000004745 nonwoven fabric Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 240000006829 Ficus sundaica Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/005—Arrangements for feeding or conveying the slivers to the drafting machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/015—Gathering a plurality of forwarding filamentary materials into a bundle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H57/00—Guides for filamentary materials; Supports therefor
- B65H57/02—Stationary rods or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H57/00—Guides for filamentary materials; Supports therefor
- B65H57/16—Guides for filamentary materials; Supports therefor formed to maintain a plurality of filaments in spaced relation
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/02—Carding machines
- D01G15/12—Details
- D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
- D01G15/64—Drafting or twisting apparatus associated with doffing arrangements or with web-dividing apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
- B65H2701/311—Slivers
Definitions
- the present invention relates to a sliver guide for guiding a plurality of slivers in an entrance area of a track, comprising a first guide section for guiding a first group of slivers, with a second guide section for separately guiding a second group of slivers, wherein the first guide section and the second guide section in FIG a side view of the tape guide are spaced from each other.
- a route is proposed with at least one entry area for fiber slivers to be drawn and with at least one drafting system comprising a plurality of drafting rollers, wherein in at least one entrance area a first guide section is arranged to guide a first group of slivers, wherein in said entry area second guide portion for separately guiding a second group of fiber ribbons is arranged, and wherein the first guide portion and the second guide portion are spaced apart in a side view of the distance.
- Stretching is primarily used to produce as uniform a fiber fleece as possible from a plurality of fiber ribbons.
- the track has one or more draw frames, which in turn comprise a number of default members, usually in the form of a plurality of successively arranged pairs of rollers, wherein the slivers are guided between the respective roller pairs by clamping. Since the pairs of rollers have different and in the direction of tape travel increasing peripheral speeds, the slivers are finally stretched and thereby evened.
- a band leader placed, for example, a plurality of vertically extending rods, between which the individual slivers are guided.
- the DE 41 42 038 A1 describes a path for warping a plurality of slivers.
- the line comprises draw-in cylinders for the common supply of the slivers to the drafting system and a funnel with a passage opening for the union of the slivers to form a fiber composite during the passage of the slivers through the funnel. It is further provided that the cross-sectional area of the passage opening of the funnel is variable such that the funnel regardless of the number of processed fiber slivers achieves a uniform density of the sliver after the funnel.
- the fiber fleece leaving the stretch usually also has a quality which fluctuates over its width, since thorough mixing of the fiber ribbons takes place only to a limited extent within the stretch.
- Object of the present invention is therefore to propose a band leader or a route that allow the drawing of slivers of different quality, the production of a non-woven fabric, which is characterized by a high degree of homogeneity.
- the strip guide next to a first and a second guide portion on a third guide portion which is spaced in a side view from the first and second guide portion, wherein at least one of the guide portions are associated with lateral guide elements for laterally guiding slivers, their mutual Distance is adjustable.
- the third guide section preferably serves to guide all the fiber slivers fed to the drafting system after passing through the first and second guide sections.
- the band guide is designed to first cause a separation of the supplied slivers in two groups, which are guided separately from the two first guide sections, the slivers reunited after passing these guide sections and before entering the drafting by the third Guide section are performed. Finally, it can be determined by the lateral guidance how closely the individual fiber ribbons pass through the respective guide sections.
- the mutual distance between the two guide elements of the third guide section is set only slightly larger or smaller than the mutual distance of the guide elements of the first and / or second guide section.
- overlapping of the individual slivers in the region of the third guide section inevitably occurs, so that the slivers are already superimposed before entering the drafting system and a kind of mixing of the individual slivers takes place.
- the setting of said distance allows a simple way to adjust the band guide to different slivers or different numbers of slivers, in particular, the distance between the guide elements of the third guide portion should be selected so that its amount is smaller than the total width all slivers. This will eventually ensure that there is a certain overlap or overlap of the slivers and thus the desired mixing of the individual slivers.
- the band guide has a fourth guide portion which is spaced in the said side view of the first, the second and the third guide portion, wherein the fourth guide portion preferably also lateral guide elements for the lateral guidance of slivers are assigned, the mutual distance preferably adjustable is.
- the fourth guide section is preferably arranged on the side of the second and / or third guide section facing away from the first guide section.
- the fourth guide portion serves to guide all of the slivers fed to the sliver guide before they enter the region of the first and second guide portions where they are split into the said two groups.
- the said guide portions are aligned in a side view of the tape guide such that they are located on the corners of a rhombus, wherein the first guide portion of the second guide portion and the third guide portion should oppose the fourth guide portion.
- the third and the fourth, particularly preferably also the first and the second guide section also have lateral guide elements whose mutual distance from one another is adjustable.
- at least one, preferably both, guide elements of each guide portion are movably mounted and fixed in the respective desired position.
- the respective guide elements are mounted displaceably perpendicular to a predetermined sliver transport direction of the sliver guide in order to limit the area to be passed by the slivers in its perpendicular to the sliver transport direction width (side).
- the guide sections extend parallel to one another, wherein it is particularly advantageous if all guide sections are parallel to each other in order to guide the slivers in a linear transport direction (wherein the guide sections are preferably parallel to each other and perpendicular to predetermined direction of transport of the tape guide should extend).
- the longitudinal extent of the guide sections also preferably runs in each case perpendicular to the predetermined fiber transport direction of the tape guide.
- the guide portions are formed in a plan view of the tape guide as connecting portions of two preferably extending in said fiber transport direction side walls, wherein the connection between the side walls and the individual guide portions or the guide portions having components can be detachably formed.
- At least one of the guide portions is formed by a surface portion of an elongated, one or both sides mounted, guide rod.
- the guide rod can be in a cross section, for example, circular, lens or oval-shaped.
- all guide sections are formed by surface sections of separate guide rods, which in turn preferably run parallel to one another.
- the respective guide rods are fastened on both sides in two, in particular mutually parallel, side walls of the tape guide, wherein the attachment is preferably releasably, for example by means of screw, realized.
- the side walls should also preferably run perpendicular to the longitudinal axes of the guide rods and parallel to the sliver transport direction of the tape guide.
- At least one guide element is positively connected to a guide rod and is displaceable in the longitudinal direction of the guide rod.
- the respective guide element may, for example, have a depression or a bulge, via which it can cooperate in a form-fitting manner with a bulge or depression of the guide section assigned to it.
- At least one guide element comprises a fixing means by means of which it can be fixed relative to the guide rod.
- the fixing means may be, for example, a screw or a threaded pin, which sits in a thread of the guide element and which is pressed against a guide section during tightening.
- various clamping mechanisms are possible, so that the corresponding guide element can preferably be fixed by means of adhesion at a defined location of a guide section.
- At least one guide element is formed by an eccentric disk having an eccentrically arranged aperture, wherein the aperture is preferably penetrated by the guide rod and the eccentric disk does not necessarily have to be round.
- the eccentric discs of which two are preferably present per guide rod, can be moved after loosening a corresponding fixative in the longitudinal direction of the guide rod so that their mutual distance is easy and fast ver and thus adjustable.
- it can be determined by turning the respective eccentric disc about its axis of rotation passing through the aperture, in which direction the majority of the eccentric disk should extend in order to be able to optimally adapt the guide element formed by the eccentric disk to the fiber slivers to be drawn.
- At least one guide element is pivotable about a pivot axis.
- the corresponding guide elements could in turn each, preferably eccentrically, be connected via a pivot axis with one of the guide sections, which by pivoting one or both guide elements of a guide section whose mutual distance and thus the passage width for the slivers would be adjustable.
- the respective pivot axis preferably extends perpendicular to the sliver transport direction of the tape guide.
- a corresponding fixing means should also be present in this case in order to be able to fix the respective guide element after pivoting with respect to the pivot axis.
- At least one of said guide sections has one or more intermediate guides in the direction of its longitudinal axis, with the aid of which several slivers can be guided laterally spaced from one another.
- the intermediate guides are spaced apart in the direction of said longitudinal axis, so that in each case a sliver can be guided between two intermediate guides or an intermediate guide and an adjacent lateral guide element.
- the first and the second guide section are equipped with corresponding intermediate guides, wherein the intermediate guides of the two guide sections should be arranged offset to one another in the direction of the longitudinal extension of the guide sections. This finally ensures that the slivers are guided by the two guide sections such that they leave the guide sections or when arriving in the region of the third guide section, partially overlapping each other and overlapping each other.
- the intermediate guide is displaceable in the direction of a longitudinal axis of the guide section having the intermediate guides.
- fixing means should also be assigned to the intermediate guides in order to be able to fix their position.
- the intermediate guides may be formed by annular discs which can be inserted via an opening on a corresponding guide rod and subsequently fixed.
- a route is proposed which takes up the invention described so far. It is thus provided that, in addition to a first and a second guide section, a third guide section for fiber ribbons is arranged in an entrance area upstream of the drafting section, which is spaced apart from the first and second guide section in a side view of the route, wherein at least one of the guide sections has lateral guide elements associated with the lateral guidance of slivers whose mutual distance is adjustable.
- the first and second guide sections in the said side view are spaced apart both vertically and horizontally.
- the third guide section should be adjacent to the input rollers of the drafting system, so that the fiber strips leaving the guide sections can enter directly into the drafting system.
- a fourth guide section is arranged in said entrance area, which in the mentioned side view is spaced from the first guide section, the second guide section and the third guide section, wherein the fourth guide section preferably also has lateral guide elements assigned to the lateral guidance of slivers whose mutual distance can also be adjusted.
- the fourth guide section is preferably arranged upstream of the remaining guide sections in the transport direction of the drafting system and serves to guide the slivers on entry into the guide section of the track formed by the guide sections.
- first and the second guide section should be arranged one above the other (possibly with slight mutual lateral offset) in the side view of the track, so that a first group of the track-fed fiber ribbons guided above the first guide section and a second group of slivers below the second guide section can be.
- each drafting system is assigned a separate sliver guide with the described guide sections.
- the guide sections is formed by a strap guide according to the previous or subsequent description, wherein the strap guide is preferably releasably connected to a holding portion of the route.
- the individual features described in connection with the tape guide or shown in the figures can hereby be implemented individually or in any combination with each other, as far as the individual features are not in contradiction to the independent claims.
- first guide section, the second guide section, the third guide section and / or the fourth guide section are aligned horizontally and / or perpendicular to a transport direction of the drafting system.
- the slivers eventually pass below or above the individual guide sections.
- FIG. 1 shows a side view of a route 4 for stretching (comparison) of several slivers 2.
- the slivers 2 are removed from one or more so-called sliver cans 21 and via corresponding deflections 20 and a band guide 1 the drafting system 18 of the route 4 (or In the case of a multi-head section: the drafting units 18 of the route 4).
- the drafting system or each of the drafting units 18 generally comprises three or more roller assemblies, each of which may have at least one lower roller 17 and one or more upper rollers 25.
- the desired distortion of the existing from the individual slivers 2 fiber strand finally arises in that the individual cylindrical lower rollers 17 and thus also the individual, with these in contact, upper rollers 25, in the transport direction T shown of the drafting system 18 have an increasingly higher peripheral speed.
- the drafting unit 18 in the embodiments shown lower rollers 17 in the form of an input cylinder, a central cylinder and an output cylinder (as viewed in the transport direction successively arranged).
- the individual cylinders are in turn in contact with one or more counter-cylinders formed by the top rollers 25, so that the fiber structure can be guided in a clamping manner.
- peripheral speeds of said cylinder finally takes a stretching and thus a uniformity of the fiber structure.
- the nonwoven fabric 19 passes into the region of a take-off device 23, which generally comprises a plurality of rotatable or at least partially driven trigger elements, for example in the form of two take-off wheels 22 contacting the fiber web 19 from two sides.
- the take-off device 23 causes by a correspondingly high conveying speed, a further distortion of the fiber web 19.
- the fiber web 19 is usually fed to a rotating turntable 16 and stored by this looped into a provided spinning can 21.
- the individual slivers 2 are generally guided over a band guide 1 arranged in the input region 3 of the drafting system 18.
- the known band guide 1 usually have a plurality of mutually parallel and vertically extending rods, between which the individual slivers 2 are performed.
- the present invention proposes a new band leader 1, as exemplified in the Figures 2 . 3 and 7 is shown (details of which show the FIGS. 4 to 6 ).
- the strip guide 1 comprises at least three, preferably the four shown, guide sections 5, 6, 7, 8, which serve in different ways the guidance of individual or all the drafting system 18 to be supplied slivers 2, wherein the drafting system 18 based on FIG. 2 would be left down and the band guide 1, for example, on the brackets shown 24 with a corresponding connection of the track 4 may be connected such that the slivers 2 after leaving the band guide 1 directly into the drafting system 18, or between the two input rollers (in FIG. 1 shown on the left).
- the first group of slivers 2 may be above their underside on the first guide section 5, while the slivers 2 of a second group can rest from below on the second guide section 6 and thus also be guided at least in the vertical direction.
- the fiber ribbons 2 After passing through the first and the second guide section 5, 6, the fiber ribbons 2 finally come into the region of a third guide section 7 (see also FIG. 3 ), wherein the individual slivers 2 are at least partially superimposed (this is in FIG. 4 indicated by the spacing of the fiber ribbons 2 between the third guide section 7 and the input roller arrangement of the drafting system 18 following in the transport direction T).
- the course of the fiber ribbons 2 shown is only to be understood as an example. Likewise, it would be z. B. conceivable, the fibers according to FIG. 5 to lead, in which case the third guide section 7 is passed from the first group of slivers 2 above and from the second group slivers 2 below.
- the invention is not limited to distributing the slivers 2 on two guide sections. Rather, it would also be conceivable to provide further guide sections in addition to the aforementioned first and second guide sections 5, 6, so that the fiber slivers 2 could, for example, also be divided into three or four groups, before they are used in the area of the "third guide section" in the previous description "designated guide section 7 reunited and superimposed here.
- the guide elements 9 serve the lateral guidance of the slivers 2 and thus the determination of the width of the fiber bands to be passed by the guide portion 2.
- said width can finally be adjusted by moving one or both guide elements 9, so that it is always ensured that the slivers 2 at least partially overlap in the region of the third guide section 7.
- the individual guide sections 5, 6, 7, 8 are preferably realized by separate guide elements 9, in particular in the form of, for example, on both sides relative to corresponding side walls fixed guide rods 10.
- the guide rods 10 may be in cross section, for example, round, oval or teardrop-shaped and with the aid of fixing means 11, z. As screws, releasably connected to the side walls 26 of the tape guide 1.
- intermediate guides 15 are provided in the region of the individual guide sections 5, 6, 7, 8, preferably in the region of the first and the second guide section 5, 6. These may be formed, for example, by annular disks which are mounted on the said guide rods 10, for example releasably, and with the aid of which the individual fiber bands 2 can be guided separately from one another (cf. FIG. 7 ).
- the intermediate guides 15 of the individual guide sections 5, 6, 7, 8 can also be offset relative to one another in the width direction of the strip guide 1 (ie perpendicular to the transport direction T), resulting in a particularly Reliable overlay of the individual slivers 2 in the region of the third guide section. 7
- the guide elements 9 can be fastened directly to a guide rod 10 having a guide section 5, 6, 7, 8, it being conceivable, for example, to form the respective guide element 9 paddle-shaped and to fasten the guide rod 10 by means of a pivot axis 14 realize, so that by pivoting the one or more guide elements 9 and their mutual distance A can be adjusted.
- the guide elements 9 can also through in the FIGS. 5 to 7 shown eccentric discs 13 are formed, which are preferably placed over an opening 12 on the respective guide rod 10 and z. B. with a fixing means 11 (screw, threaded bolt, o. ⁇ .) Can be fixed to the intended position.
- a fixing means 11 screw, threaded bolt, o. ⁇ .
- the lateral guidance of the slivers 2 can be adjusted if necessary (s. FIG. 5 in which the eccentric discs 13 are aligned differently; in FIG. 5 Incidentally, only the guide elements 9 arranged at the rear in relation to the sheet plane are shown in order to allow a view of the fiber slivers 2).
- the present invention is not limited to the illustrated and described embodiments. Modifications within the scope of the independent claims are possible.
- the individual guide sections need not all be part of a strip guide that can be detachably connected to the track. Rather, the individual guide portion may be independently secured to a support or a frame of the track.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Preliminary Treatment Of Fibers (AREA)
Description
Die vorliegende Erfindung betrifft einen Bandführer zur Führung mehrerer Faserbänder in einem Eingangsbereich einer Strecke, mit einem ersten Führungsabschnitt zur Führung einer ersten Gruppe von Faserbändern, mit einem zweiten Führungsabschnitt zur separaten Führung einer zweiten Gruppe von Faserbändern, wobei der erste Führungsabschnitt und der zweite Führungsabschnitt in einer Seitenansicht des Bandführers voneinander beabstandet sind. Darüber hinaus wird eine Strecke mit wenigstens einem Eingangsbereich für zu verstreckende Faserbänder und mit zumindest einem, mehrere Streckwerkswalzen umfassenden, Streckwerk, vorgeschlagen, wobei in wenigstens einem Eingangsbereich ein erster Führungsabschnitt zur Führung einer ersten Gruppe von Faserbändern angeordnet ist, wobei in dem genannten Eingangsbereich ein zweiter Führungsabschnitt zur separaten Führung einer zweiten Gruppe von Faserbändern angeordnet ist, und wobei der erste Führungsabschnitt und der zweite Führungsabschnitt in einer Seitenansicht der Strecke voneinander beabstandet sind.The present invention relates to a sliver guide for guiding a plurality of slivers in an entrance area of a track, comprising a first guide section for guiding a first group of slivers, with a second guide section for separately guiding a second group of slivers, wherein the first guide section and the second guide section in FIG a side view of the tape guide are spaced from each other. In addition, a route is proposed with at least one entry area for fiber slivers to be drawn and with at least one drafting system comprising a plurality of drafting rollers, wherein in at least one entrance area a first guide section is arranged to guide a first group of slivers, wherein in said entry area second guide portion for separately guiding a second group of fiber ribbons is arranged, and wherein the first guide portion and the second guide portion are spaced apart in a side view of the distance.
Strecken werden vorrangig eingesetzt, um aus einer Mehrzahl von Faserbändern ein möglichst gleichmäßiges Faservlies zu erzeugen. Hierfür besitzt die Strecke ein oder mehrere Streckwerke, die wiederum eine Reihe von Verzugsorganen, in der Regel in Form von mehreren hintereinander angeordneten Walzenpaaren, umfassen, wobei die Faserbänder zwischen den entsprechenden Walzenpaaren klemmend geführt werden. Da die Walzenpaare unterschiedliche und in Bandlaufrichtung zunehmende Umfangsgeschwindigkeiten aufweisen, werden die Faserbänder schließlich verstreckt und dabei vergleichmäßigt.Stretching is primarily used to produce as uniform a fiber fleece as possible from a plurality of fiber ribbons. For this purpose, the track has one or more draw frames, which in turn comprise a number of default members, usually in the form of a plurality of successively arranged pairs of rollers, wherein the slivers are guided between the respective roller pairs by clamping. Since the pairs of rollers have different and in the direction of tape travel increasing peripheral speeds, the slivers are finally stretched and thereby evened.
Generell ist bei bekannten Strecken im Eingangsbereich, d. h. in dem Bereich, in dem die Faserbänder in das Streckwerk einlaufen, ein Bandführer platziert, der beispielsweise eine Vielzahl von sich vertikal erstreckenden Stäben umfasst, zwischen denen die einzelnen Faserbänder geführt werden.In general, in known areas in the entrance area, ie in the area in which the slivers enter the drafting system, a band leader placed, for example, a plurality of vertically extending rods, between which the individual slivers are guided.
Die
Weisen die einzelnen Faserbänder unterschiedliche Qualität (z. B. unterschiedliche Dicken oder Faserlängen) auf, so weist auch das die Strecke verlassende Faservlies meist eine über seine Breite schwankende Qualität auf, da eine Durchmischung der Faserbänder innerhalb der Strecke nur bedingt erfolgt.If the individual fiber ribbons have different quality (eg different thicknesses or fiber lengths), then the fiber fleece leaving the stretch usually also has a quality which fluctuates over its width, since thorough mixing of the fiber ribbons takes place only to a limited extent within the stretch.
Aufgabe der vorliegenden Erfindung ist es daher, einen Bandführer bzw. eine Strecke vorzuschlagen, die auch beim Verstrecken von Faserbändern unterschiedlicher Qualität die Herstellung eines Faservlieses erlauben, das sich durch eine hohe Homogenität auszeichnet.Object of the present invention is therefore to propose a band leader or a route that allow the drawing of slivers of different quality, the production of a non-woven fabric, which is characterized by a high degree of homogeneity.
Die Aufgabe wird gelöst durch einen Bandführer und ein Streckwerk mit den Merkmalen der unabhängigen Patentansprüche.The object is achieved by a band guide and a drafting system with the features of the independent claims.
Erfindungsgemäß weist der Bandführer neben einem ersten und einem zweiten Führungsabschnitt einen dritten Führungsabschnitt auf, der in einer Seitenansicht vom ersten und vom zweiten Führungsabschnitt beabstandet ist, wobei zumindest einem der Führungsabschnitte seitliche Führungselemente zur seitlichen Führung von Faserbändern zugeordnet sind, deren gegenseitiger Abstand einstellbar ist. Hierbei dient der erste Führungsabschnitt der Führung einer ersten Gruppe von Faserbändern und der zweite Führungsabschnitt der Führung einer zweiten Gruppe von Faserbändern. Der dritte Führungsabschnitt dient schließlich vorzugsweise der Führung aller dem Streckwerk zugeführten Faserbänder nach Passieren des ersten und des zweiten Führungsabschnitts. Mit anderen Worten ist der Bandführer ausgelegt, zunächst eine Separierung der zugeführten Faserbänder in zwei Gruppen zu bewirken, die von den beiden zuerst genannten Führungsabschnitten separat geführt werden, wobei die Faserbänder nach Passieren dieser Führungsabschnitte wieder vereint und vor dem Eintritt in das Streckwerk durch den dritten Führungsabschnitt geführt werden. Durch die seitliche Führung kann schließlich festgelegt werden, wie eng aneinander die einzelnen Faserbänder die jeweiligen Führungsabschnitte passieren.According to the invention, the strip guide next to a first and a second guide portion on a third guide portion which is spaced in a side view from the first and second guide portion, wherein at least one of the guide portions are associated with lateral guide elements for laterally guiding slivers, their mutual Distance is adjustable. Here, the first guide portion of the guide of a first group of slivers and the second guide portion of the guide of a second group of slivers. Finally, the third guide section preferably serves to guide all the fiber slivers fed to the drafting system after passing through the first and second guide sections. In other words, the band guide is designed to first cause a separation of the supplied slivers in two groups, which are guided separately from the two first guide sections, the slivers reunited after passing these guide sections and before entering the drafting by the third Guide section are performed. Finally, it can be determined by the lateral guidance how closely the individual fiber ribbons pass through the respective guide sections.
Hierbei wäre es beispielsweise von Vorteil, wenn der gegenseitige Abstand der beiden Führungselemente des dritten Führungsabschnitts nur geringfügig größer oder auch geringer eingestellt wird als der gegenseitige Abstand der Führungselemente des ersten und/oder zweiten Führungsabschnitts. In diesem Fall kommt es nach Passieren des ersten und zweiten Führungsabschnitts zwangsläufig zu einem Überlappen der einzelnen Faserbänder im Bereich des dritten Führungsabschnitts, so dass die Faserbänder bereits vor dem Eintritt ins Streckwerk überlagert werden und hierbei bereits eine Art Vermischung der einzelnen Faserbänder erfolgt. Insbesondere ergibt sich hierdurch schließlich eine besonders gleichmäßige Verteilung der einzelnen Fasern der der Strecke zugeführten Faserbänder (deren Dicke und/oder Zusammensetzung unterschiedlich sein kann) im verzogenen Faserverband und damit auch in dem aus dem Faserverband in einem weiteren Schritt hergestellten Garn. Ferner erlaubt die Einstellung des genannten Abstandes eine einfache Möglichkeit, den Bandführer an verschiedene Faserbänder oder auch unterschiedliche Anzahlen an Faserbändern einzustellen, wobei insbesondere der Abstand der Führungselemente des dritten Führungsabschnitts so gewählt sein sollte, dass dessen Betrag kleiner ist als die Gesamtbreite aller Faserbänder. Hierdurch wird schließlich sichergestellt, dass es zu einer gewissen Überlagerung bzw. Überlappung der Faserbänder und damit zu der gewünschten Vermischung der einzelnen Faserbänder kommt.In this case, it would be advantageous, for example, if the mutual distance between the two guide elements of the third guide section is set only slightly larger or smaller than the mutual distance of the guide elements of the first and / or second guide section. In this case, after passing through the first and second guide sections, overlapping of the individual slivers in the region of the third guide section inevitably occurs, so that the slivers are already superimposed before entering the drafting system and a kind of mixing of the individual slivers takes place. In particular, this results in a particularly even distribution of the individual fibers of the fiber slivers supplied to the track (the thickness and / or composition may be different) in the distorted fiber structure and thus also in the yarn produced from the fiber structure in a further step. Furthermore, the setting of said distance allows a simple way to adjust the band guide to different slivers or different numbers of slivers, in particular, the distance between the guide elements of the third guide portion should be selected so that its amount is smaller than the total width all slivers. This will eventually ensure that there is a certain overlap or overlap of the slivers and thus the desired mixing of the individual slivers.
Vorteilhaft ist es, wenn der Bandführer einen vierten Führungsabschnitt aufweist, der in der genannten Seitenansicht vom ersten, vom zweiten und vom dritten Führungsabschnitt beabstandet ist, wobei dem vierten Führungsabschnitt vorzugsweise ebenfalls seitliche Führungselemente zur seitlichen Führung von Faserbändern zugeordnet sind, deren gegenseitiger Abstand vorzugsweise einstellbar ist. Der vierte Führungsabschnitt ist vorzugsweise auf der dem ersten Führungsabschnitt abgewandten Seite des zweiten und/oder dritten Führungsabschnitts angeordnet. Vorzugsweise dient der vierte Führungsabschnitt der Führung aller dem Bandführer zugeführten Faserbänder, bevor diese in den Bereich des ersten und des zweiten Führungsabschnitts gelangen, in dem sie auf die genannten zwei Gruppen aufgeteilt werden. Vorzugsweise sind die genannten Führungsabschnitte in einer Seitenansicht des Bandführers derart zueinander ausgerichtet, dass sie sich auf den Ecken einer Raute befinden, wobei der erste Führungsabschnitt dem zweiten Führungsabschnitt und der dritte Führungsabschnitt dem vierten Führungsabschnitt gegenüberliegen sollten. Vorzugsweise beisitzt zudem der dritte und der vierte, besonders bevorzugt auch der erste und der zweite Führungsabschnitt seitliche Führungselemente, deren gegenseitiger Abstand zueinander einstellbar ist. Hierzu sind wiederum zumindest eines, vorzugsweise beide, Führungselemente eines jeden Führungsabschnitts beweglich gelagert und in der jeweils gewünschten Stellung fixierbar. Insbesondere ist es von Vorteil, wenn die jeweiligen Führungselemente senkrecht zu einer vorgegebenen Faserbandtransportrichtung des Bandführers verschiebbar gelagert sind, um den von den Faserbändern zu passierenden Bereich in seiner senkrecht zur Faserbandtransportrichtung verlaufenden Breite (seitlich) begrenzen zu können.It is advantageous if the band guide has a fourth guide portion which is spaced in the said side view of the first, the second and the third guide portion, wherein the fourth guide portion preferably also lateral guide elements for the lateral guidance of slivers are assigned, the mutual distance preferably adjustable is. The fourth guide section is preferably arranged on the side of the second and / or third guide section facing away from the first guide section. Preferably, the fourth guide portion serves to guide all of the slivers fed to the sliver guide before they enter the region of the first and second guide portions where they are split into the said two groups. Preferably, the said guide portions are aligned in a side view of the tape guide such that they are located on the corners of a rhombus, wherein the first guide portion of the second guide portion and the third guide portion should oppose the fourth guide portion. Preferably, the third and the fourth, particularly preferably also the first and the second guide section also have lateral guide elements whose mutual distance from one another is adjustable. For this purpose, in turn, at least one, preferably both, guide elements of each guide portion are movably mounted and fixed in the respective desired position. In particular, it is advantageous if the respective guide elements are mounted displaceably perpendicular to a predetermined sliver transport direction of the sliver guide in order to limit the area to be passed by the slivers in its perpendicular to the sliver transport direction width (side).
Besondere Vorteile bringt es mit sich, wenn zumindest zwei der Führungsabschnitte parallel zueinander verlaufen, wobei es besonders vorteilhaft ist, wenn sämtliche Führungsabschnitte parallel zueinander verlaufen, um die Faserbänder in einer linearen Transportrichtung führen zu können (wobei sich die Führungsabschnitte vorzugsweise parallel zueinander und senkrecht zur vorgegebenen Transportrichtung des Bandführers erstrecken sollten). Die Längserstreckung der Führungsabschnitte verläuft zudem vorzugsweise jeweils senkrecht zur vorgegebenen Fasertransportrichtung des Bandführers. Vorzugsweise sind die Führungsabschnitte in einer Draufsicht des Bandführers als Verbindungsabschnitte zweier sich vorzugsweise in der genannten Fasertransportrichtung erstreckender Seitenwandungen ausgebildet, wobei die Verbindung zwischen den Seitenwandungen und den einzelnen Führungsabschnitten bzw. den die Führungsabschnitte aufweisenden Bauteilen lösbar ausgebildet sein kann. Zudem können die Seitenwandungen oder auch andere Wandabschnitte des Bandführers mit einer oder mehreren Halterungen, beispielsweise in Form von Laschen, Bolzen oder sonstigen Elementen, versehen sein, über die sich der Bandführer mit einer Strecke verbinden lässt.Particular advantages arise when at least two of the guide sections extend parallel to one another, wherein it is particularly advantageous if all guide sections are parallel to each other in order to guide the slivers in a linear transport direction (wherein the guide sections are preferably parallel to each other and perpendicular to predetermined direction of transport of the tape guide should extend). The longitudinal extent of the guide sections also preferably runs in each case perpendicular to the predetermined fiber transport direction of the tape guide. Preferably, the guide portions are formed in a plan view of the tape guide as connecting portions of two preferably extending in said fiber transport direction side walls, wherein the connection between the side walls and the individual guide portions or the guide portions having components can be detachably formed. In addition, the side walls or other wall sections of the tape guide with one or more brackets, for example in the form of tabs, bolts or other elements, be provided over which the tape guide can connect with a stretch.
Ebenso ist es vorteilhaft, wenn zumindest einer der Führungsabschnitte durch einen Oberflächenabschnitt eines länglichen, ein- oder beidseitig gelagerten, Führungsstabs gebildet ist. Der Führungsstab kann in einem Querschnitt beispielsweise kreis-, linsen- oder ovalförmig sein. Zudem ist es von Vorteil, wenn alle Führungsabschnitte durch Oberflächenabschnitte separater Führungsstäbe gebildet sind, die wiederum vorzugsweise parallel zueinander verlaufen. Zudem ist es von Vorteil, wenn die jeweiligen Führungsstäbe jeweils beidseitig in zwei, insbesondere parallel zueinander verlaufenden, Seitenwandungen des Bandführers befestigt sind, wobei die Befestigung vorzugsweise lösbar, beispielsweise mittels Schraubverbindung, realisiert ist. Die Seitenwandungen sollten zudem vorzugsweise senkrecht zu den Längsachsen der Führungsstäbe und parallel zur Faserbandtransportrichtung des Bandführers verlaufen.It is also advantageous if at least one of the guide portions is formed by a surface portion of an elongated, one or both sides mounted, guide rod. The guide rod can be in a cross section, for example, circular, lens or oval-shaped. Moreover, it is advantageous if all guide sections are formed by surface sections of separate guide rods, which in turn preferably run parallel to one another. Moreover, it is advantageous if the respective guide rods are fastened on both sides in two, in particular mutually parallel, side walls of the tape guide, wherein the attachment is preferably releasably, for example by means of screw, realized. The side walls should also preferably run perpendicular to the longitudinal axes of the guide rods and parallel to the sliver transport direction of the tape guide.
Auch ist es äußert vorteilhaft, wenn zumindest ein Führungselement formschlüssig mit einem Führungsstab in Verbindung steht und in Längsrichtung des Führungsstabs verschiebbar ist. Durch Verschieben eines oder zweier benachbarter Führungselemente eines Führungsabschnitts lässt sich schließlich der gegenseitige Abstand der Führungselemente und damit die Breite des von den jeweiligen Faserbändern zu passierende Bereichs des entsprechenden Führungsabschnitts festlegen. Das jeweilige Führungselement kann beispielsweise eine Vertiefung oder eine Ausbuchtung aufweisen, über die es mit einer Ausbuchtung bzw. Vertiefung des ihm zugeordneten Führungsabschnitts formschlüssig zusammenwirken kann.It is also extremely advantageous if at least one guide element is positively connected to a guide rod and is displaceable in the longitudinal direction of the guide rod. By displacing one or two adjacent guide elements of a guide section, it is finally possible to determine the mutual spacing of the guide elements and thus the width of the region of the corresponding guide section to be passed by the respective fiber slivers. The respective guide element may, for example, have a depression or a bulge, via which it can cooperate in a form-fitting manner with a bulge or depression of the guide section assigned to it.
Auch ist es von Vorteil, wenn wenigstens ein Führungselement ein Fixiermittel umfasst, mit dessen Hilfe es gegenüber dem Führungsstab fixierbar ist. Hierdurch kann die Stellung des jeweiligen Führungselements nach Anpassung dessen Abstand zum benachbarten Führungselement sicher beibehalten werden. Bei dem Fixiermittel kann es sich beispielsweise um eine Schraube oder einen Gewindestift handeln, der in einem Gewinde des Führungselements sitzt und der beim Festziehen gegen einen Führungsabschnitt gepresst wird. Ebenso sind diverse Klemmmechanismen möglich, so dass das entsprechende Führungselement vorzugsweise mittels Kraftschluss an einer definierten Stelle eines Führungsabschnitts fixiert werden kann.It is also advantageous if at least one guide element comprises a fixing means by means of which it can be fixed relative to the guide rod. As a result, the position of the respective guide element can be securely maintained after adjusting its distance from the adjacent guide element. The fixing means may be, for example, a screw or a threaded pin, which sits in a thread of the guide element and which is pressed against a guide section during tightening. Likewise, various clamping mechanisms are possible, so that the corresponding guide element can preferably be fixed by means of adhesion at a defined location of a guide section.
Vorteilhaft ist es zudem, wenn zumindest ein Führungselement durch eine, eine exzentrisch angeordnete Durchbrechung aufweisende, Exzenterscheibe gebildet ist, wobei die Durchbrechung vorzugsweise von dem Führungsstab durchdrungen wird und die Exzenterscheibe nicht zwangsläufig rund sein muss. Die Exzenterscheiben, von denen pro Führungsstab vorzugweise zwei vorhanden sind, können nach Lösen eines entsprechenden Fixiermittels in Längsrichtung des Führungsstabs verschoben werden, so dass deren gegenseitiger Abstand einfach und schnell ver- und damit einstellbar ist. Zudem kann durch Drehen der jeweiligen Exzenterscheibe um ihre durch die Durchbrechung verlaufende Drehachse festgelegt werden, in welche Richtung sich der Großteil der Exzenterscheibe erstrecken soll, um das durch die Exzenterscheibe gebildete Führungselement optimal an die zu verstreckende Faserbänder anpassen zu können.Moreover, it is advantageous if at least one guide element is formed by an eccentric disk having an eccentrically arranged aperture, wherein the aperture is preferably penetrated by the guide rod and the eccentric disk does not necessarily have to be round. The eccentric discs, of which two are preferably present per guide rod, can be moved after loosening a corresponding fixative in the longitudinal direction of the guide rod so that their mutual distance is easy and fast ver and thus adjustable. In addition, it can be determined by turning the respective eccentric disc about its axis of rotation passing through the aperture, in which direction the majority of the eccentric disk should extend in order to be able to optimally adapt the guide element formed by the eccentric disk to the fiber slivers to be drawn.
Des Weiteren ist es vorteilhaft, wenn zumindest ein Führungselement um eine Schwenkachse verschwenkbar ist. Beispielsweise wäre es denkbar, das oder die Führungselemente platten- oder paddelförmig auszubilden, wobei eine oder mehrere Seitenkanten abgerundet sein könnten. Die entsprechenden Führungselemente könnten wiederum jeweils, vorzugsweise exzentrisch, über eine Schwenkachse mit einem der Führungsabschnitte verbunden sein, wobei durch Verschwenken eines oder beider Führungselemente eines Führungsabschnitts deren gegenseitige Abstand und damit die Durchtrittsbreite für die Faserbänder einstellbar wären. Die jeweilige Schwenkachse erstreckt sich vorzugsweise senkrecht zur Faserbandtransportrichtung des Bandführers. Zudem sollte auch in diesem Fall ein entsprechendes Fixiermittel vorhanden sein, um das jeweilige Führungselement nach dem Verschwenken gegenüber der Schwenkachse fixieren zu können.Furthermore, it is advantageous if at least one guide element is pivotable about a pivot axis. For example, it would be conceivable to design the guide element or elements in a paddle-shaped or paddle-shaped manner, wherein one or more side edges could be rounded off. The corresponding guide elements could in turn each, preferably eccentrically, be connected via a pivot axis with one of the guide sections, which by pivoting one or both guide elements of a guide section whose mutual distance and thus the passage width for the slivers would be adjustable. The respective pivot axis preferably extends perpendicular to the sliver transport direction of the tape guide. In addition, a corresponding fixing means should also be present in this case in order to be able to fix the respective guide element after pivoting with respect to the pivot axis.
Vorteilhaft ist es zudem, wenn zumindest einer der genannten Führungsabschnitte in Richtung seiner Längsachse ein oder mehrere Zwischenführungen aufweist, mit deren Hilfe mehrere Faserbänder seitlich beabstandet zueinander führbar sind. Die Zwischenführungen sind in Richtung der genannten Längsachse voneinander beabstandet, so dass jeweils ein Faserband zwischen zwei Zwischenführungen oder einer Zwischenführung und einem benachbarten seitlichen Führungselement geführt werden kann. Insbesondere ist es von Vorteil, wenn der erste und der zweite Führungsabschnitt mit entsprechenden Zwischenführungen ausgestattet sind, wobei die Zwischenführungen der beiden Führungsabschnitte in Richtung der Längsausdehnung der Führungsabschnitte zueinander versetzt angeordnet sein sollten. Dies stellt schließlich sicher, dass die Faserbänder durch die beiden Führungsabschnitte derart geführt werden, dass sie nach Verlassen der Führungsabschnitte bzw. beim Eintreffen im Bereich des dritten Führungsabschnitts teilweise übereinander verlaufen und sich hierbei überlagern.It is also advantageous if at least one of said guide sections has one or more intermediate guides in the direction of its longitudinal axis, with the aid of which several slivers can be guided laterally spaced from one another. The intermediate guides are spaced apart in the direction of said longitudinal axis, so that in each case a sliver can be guided between two intermediate guides or an intermediate guide and an adjacent lateral guide element. In particular, it is advantageous if the first and the second guide section are equipped with corresponding intermediate guides, wherein the intermediate guides of the two guide sections should be arranged offset to one another in the direction of the longitudinal extension of the guide sections. This finally ensures that the slivers are guided by the two guide sections such that they leave the guide sections or when arriving in the region of the third guide section, partially overlapping each other and overlapping each other.
Ebenso ist es vorteilhaft, wenn wenigstens eine Zwischenführung in Richtung einer Längsachse des die Zwischenführungen aufweisenden Führungsabschnitts verschiebbar ist. Auf diese Weise können auch die Abstände zwischen den einzelnen Zwischenführungen auf die jeweils zu verstreckenden Faserbänder eingestellt werden. In diesem Fall sollten auch den Zwischenführungen Fixiermittel zugeordnet sein, um deren Stellung fixieren zu können. Die Zwischenführungen können im Übrigen durch Ringscheiben gebildet sein, die über eine Durchbrechung auf einen entsprechenden Führungsstab gesteckt und anschließend fixiert werden können.Likewise, it is advantageous if at least one intermediate guide is displaceable in the direction of a longitudinal axis of the guide section having the intermediate guides. In this way, the distances between the individual intermediate guides can be adjusted to each to be stretched slivers. In this case, fixing means should also be assigned to the intermediate guides in order to be able to fix their position. Incidentally, the intermediate guides may be formed by annular discs which can be inserted via an opening on a corresponding guide rod and subsequently fixed.
Des Weiteren wird eine Strecke vorgeschlagen, die die bisher beschriebene Erfindung aufgreift. So ist vorgesehen, dass neben einem ersten und einem zweiten Führungsabschnitt in einem dem Streckwerk der Strecke vorgeordneten Eingangsbereich ein dritter Führungsabschnitt für Faserbänder angeordnet ist, der in einer Seitenansicht der Strecke vom ersten und vom zweiten Führungsabschnitt beabstandet ist, wobei zumindest einem der Führungsabschnitte seitliche Führungselemente zur seitlichen Führung von Faserbändern zugeordnet sind, deren gegenseitiger Abstand einstellbar ist. Vorteilhafterweise sind der erste und der zweite Führungsabschnitt in der genannten Seitenansicht sowohl vertikal als auch horizontal voneinander beabstandet. Zudem sollte der dritte Führungsabschnitt den Eingangswalzen des Streckwerks benachbart sein, so dass die die Führungsabschnitte verlassenden Faserbänder unmittelbar in das Streckwerk eintreten können.Furthermore, a route is proposed which takes up the invention described so far. It is thus provided that, in addition to a first and a second guide section, a third guide section for fiber ribbons is arranged in an entrance area upstream of the drafting section, which is spaced apart from the first and second guide section in a side view of the route, wherein at least one of the guide sections has lateral guide elements associated with the lateral guidance of slivers whose mutual distance is adjustable. Advantageously, the first and second guide sections in the said side view are spaced apart both vertically and horizontally. In addition, the third guide section should be adjacent to the input rollers of the drafting system, so that the fiber strips leaving the guide sections can enter directly into the drafting system.
Weitere Vorteile bringt es mit sich, wenn in dem genannten Eingangsbereichs ein vierter Führungsabschnitt angeordnet ist, der in der genannten Seitenansicht vom ersten Führungsabschnitt, vom zweiten Führungsabschnitt und vom dritten Führungsabschnitt beabstandet ist, wobei dem vierten Führungsabschnitt vorzugsweise ebenfalls seitliche Führungselemente zur seitlichen Führung von Faserbändern zugeordnet sind, deren gegenseitiger Abstand zudem einstellbar sein kann. Der vierte Führungsabschnitt ist vorzugsweise in der Transportrichtung des Streckwerks den restlichen Führungsabschnitten vorgeordnet und dient der Führung der Faserbänder beim Eintritt in den von den Führungsabschnitten gebildeten Führungsbereich der Strecke. Zudem sollten der erste und der zweite Führungsabschnitt in der Seitenansicht der Strecke übereinander (eventuell mit leichtem gegenseitigem seitlichem Versatz) angeordnet sein, so dass eine erste Gruppe der der Strecke zugeführten Faserbänder oberhalb des ersten Führungsabschnitts und eine zweite Gruppe von Faserbändern unterhalb des zweiten Führungsabschnitts geführt werden können.Further advantages are achieved when a fourth guide section is arranged in said entrance area, which in the mentioned side view is spaced from the first guide section, the second guide section and the third guide section, wherein the fourth guide section preferably also has lateral guide elements assigned to the lateral guidance of slivers whose mutual distance can also be adjusted. The fourth guide section is preferably arranged upstream of the remaining guide sections in the transport direction of the drafting system and serves to guide the slivers on entry into the guide section of the track formed by the guide sections. In addition, the first and the second guide section should be arranged one above the other (possibly with slight mutual lateral offset) in the side view of the track, so that a first group of the track-fed fiber ribbons guided above the first guide section and a second group of slivers below the second guide section can be.
Handelt es sich bei der Strecke um eine sogenannte Doppelkopfstrecke mit zwei Streckwerken, so ist es im Übrigen von Vorteil, wenn jedem Streckwerk eine separate Faserbandführung mit den beschriebenen Führungsabschnitten zugeordnet ist.If the route is a so-called double-head section with two drafting devices, it is otherwise advantageous if each drafting system is assigned a separate sliver guide with the described guide sections.
Besondere Vorteile bringt es mit sich, wenn die Führungsabschnitte durch einen Bandführer gemäß der bisher bzw. nachfolgenden Beschreibung gebildet ist, wobei der Bandführer vorzugsweise lösbar mit einem Halteabschnitt der Strecke verbunden ist. Die einzelnen, im Zusammenhang mit dem Bandführer beschriebenen bzw. in den Figuren gezeigten Merkmale können hierbei einzeln oder in beliebiger Kombination miteinander verwirklicht sein, soweit die einzelnen Merkmale nicht in Widerspruch zu den unabhängigen Ansprüchen stehen.Particular advantages arise when the guide sections is formed by a strap guide according to the previous or subsequent description, wherein the strap guide is preferably releasably connected to a holding portion of the route. The individual features described in connection with the tape guide or shown in the figures can hereby be implemented individually or in any combination with each other, as far as the individual features are not in contradiction to the independent claims.
Vorteilhaft ist es, wenn der erste Führungsabschnitt, der zweite Führungsabschnitt, der dritte Führungsabschnitt und/oder der vierte Führungsabschnitt horizontal und/oder senkrecht zu einer Transportrichtung des Streckwerks ausgerichtet sind. Die Faserbänder passieren die einzelnen Führungsabschnitte schließlich unter- oder oberhalb derselben.It is advantageous if the first guide section, the second guide section, the third guide section and / or the fourth guide section are aligned horizontally and / or perpendicular to a transport direction of the drafting system. The slivers eventually pass below or above the individual guide sections.
Weitere Vorteile der Erfindung sind in den nachfolgenden Ausführungsbeispielen beschrieben. Es zeigen:
- Figur 1
- eine Seitenansicht einer Strecke,
-
Figur 2 - eine Perspektive eines erfindungsgemäßen Bandführers,
-
Figur 3 - eine Draufsicht eines erfindungsgemäßen Bandführers,
-
Figur 4 - eine Seitenansicht eines Ausschnitts eines erfindungsgemäßen Bandführers im Eingangsbereich eines Streckwerks,
-
Figur 5 - eine Seitenansicht eines Ausschnitts eines alternativen erfindungsgemäßen Bandführers,
-
Figur 6 - ein Führungselement für einen erfindungsgemäßen Bandführer, und
-
Figur 7 - eine Draufsicht eines weiteren erfindungsgemäßen Bandführers.
- FIG. 1
- a side view of a track,
- FIG. 2
- a perspective of a tape guide according to the invention,
- FIG. 3
- a top view of a tape guide according to the invention,
- FIG. 4
- a side view of a section of a strip guide according to the invention in the entrance area of a drafting system,
- FIG. 5
- a side view of a section of an alternative tape guide according to the invention,
- FIG. 6
- a guide element for a strip guide according to the invention, and
- FIG. 7
- a plan view of another strip guide according to the invention.
Das Streckwerk bzw. jedes der Streckwerke 18 umfasst in der Regel drei oder mehr Walzenanordnungen, die jeweils wenigstens eine Unterwalze 17 und eine oder mehrere Oberwalzen 25 aufweisen können. Der gewünschte Verzug des aus den einzelnen Faserbändern 2 bestehenden Faserverbands entsteht schließlich dadurch, dass die einzelnen zylinderförmigen Unterwalzen 17 und damit auch die einzelnen, mit diesen in Kontakt stehenden, Oberwalzen 25, in der gezeigten Transportrichtung T des Streckwerks 18 eine zunehmend höhere Umfangsgeschwindigkeit besitzen. Während auch andere Lösungen denkbar sind, besitzt das Streckwerk 18 in den gezeigten Ausführungsbeispielen Unterwalzen 17 in Form eines Eingangszylinders, eines Mittelzylinders und eines Ausgangszylinders (in Transportrichtung gesehen nacheinander angeordnet). Die einzelnen Zylinder stehen wiederum mit einem oder mehreren, durch die Oberwalzen 25 gebildeten, Gegenzylindern in Kontakt, so dass der Faserverband klemmend geführt werden kann. Durch in Transportrichtung zunehmende Umfangsgeschwindigkeiten der genannten Zylinder erfolgt schließlich ein Verstrecken und damit ein Vergleichmäßigen des Faserverbands.The drafting system or each of the drafting
Im Anschluss an das Streckwerk 18 wird das verstreckte Fasermaterial (= Faservlies 19) in der Regel durch einen nicht gezeigten Verdichter geleitet, der vorzugsweise als Vliestrichter ausgebildet ist und ein Verdichten des Faservlieses 19 bewirkt.Following the
Anschließend gelangt das Faservlies 19 in den Bereich einer Abzugseinrichtung 23, die in der Regel mehrere drehbare bzw. zumindest teilweise angetriebene Abzugselemente, beispielsweise in Form zweier das Faservlies 19 von zwei Seiten kontaktierenden Abzugsscheiben 22, umfasst. Die Abzugseinrichtung 23 bewirkt durch eine entsprechend hohe Fördergeschwindigkeit einen weiteren Verzug des Faservlieses 19. Schließlich wird das Faservlies 19 in der Regel einem rotierenden Drehteller 16 zugeführt und durch diesen schlingenförmig in eine bereitgestellte Spinnkanne 21 abgelegt.Subsequently, the
Wie bereits erwähnt, werden die einzelnen Faserbänder 2 in der Regel über einen im Eingangsbereich 3 des Streckwerks 18 angeordneten Bandführer 1 geführt. Die bekannten Bandführer 1 besitzen hierfür meist eine Vielzahl von parallel zueinander und vertikal verlaufenden Stäben, zwischen denen die einzelnen Faserbänder 2 geführt werden.As already mentioned, the
Hat jedoch eines der Faserbänder 2 eine bestimmte Eigenschaft (Dicke, Zusammensetzung, Faserlänge, etc.), die von der entsprechenden Eigenschaft der übrigen Faserbänder 2 abweicht, so ist dieser Qualitätsmangel auch im verstreckten Faservlies 19 meist noch daran zu erkennen, dass die Homogenität desselben von einem gewünschten Sollwert abweicht.However, if one of the
Um diesem Nachteil zu begegnen, schlägt die vorliegende Erfindung einen neuen Bandführer 1 vor, wie er beispielhaft in den
Prinzipiell umfasst der erfindungsgemäße Bandführer 1 wenigstens drei, vorzugsweise die gezeigten vier, Führungsabschnitte 5, 6, 7, 8, die in unterschiedlicher Weise der Führung einzelner oder aller dem Streckwerk 18 zuzuführenden Faserbänder 2 dienen, wobei sich das Streckwerk 18 bezogen auf
Wie nun aus den
Wie in diesem Zusammenhang aus
Nach Passieren des ersten und des zweiten Führungsabschnitts 5, 6 kommen die Faserbänder 2 schließlich in den Bereich eines dritten Führungsabschnitts 7 (siehe hierzu auch
Selbstverständlich ist der gezeigte Verlauf der Faserbänder 2 nur beispielhaft zu verstehen. Ebenso wäre es z. B. denkbar, die Fasern gemäß
An dieser Stelle sei zudem allgemein für die gesamte Offenbarung festgehalten, dass die Erfindung nicht darauf beschränkt ist, die Faserbänder 2 auf zwei Führungsabschnitte zu verteilen. Vielmehr wäre es auch denkbar, neben den genannten ersten und zweiten Führungsabschnitten 5, 6 weitere Führungsabschnitte vorzusehen, so dass die Faserbänder 2 beispielsweise auch auf drei oder vier Gruppen aufgeteilt werden könnten, bevor sie im Bereich des im Rahmen der bisherigen Beschreibung als "dritter Führungsabschnitt" bezeichneten Führungsabschnitts 7 wieder vereint und hierbei überlagert werden.It should also be noted at this point in general for the entire disclosure that the invention is not limited to distributing the
Generell ist es jedoch erfindungswesentlich, dass zumindest einem der Führungsabschnitte 5, 6, 7, 8 zwei seitliche Führungselemente 9 für die zu führenden Faserbänder 2 zugeordnet sind, wobei der Abstand A der Führungselemente 9 einstellbar ist (vorzugsweise durch Bewegung eines oder beider Führungselemente 9). Wie in diesem Zusammenhang z. B. aus
Wie sich beispielsweise
Ferner ist es denkbar, dass im Bereich der einzelnen Führungsabschnitte 5, 6, 7, 8, vorzugsweise im Bereich des ersten und des zweiten Führungsabschnitts 5, 6, Zwischenführungen 15 vorhanden sind. Diese können beispielsweise durch Ringscheiben gebildet sein, die auf den genannten Führungsstäben 10, beispielsweise lösbar, gelagert sind und mit deren Hilfe die einzelnen Faserbänder 2 voneinander getrennt führbar sind (vergleiche
Wie die
Alternativ können die Führungselemente 9 auch durch in den
Die vorliegende Erfindung ist nicht auf die dargestellten und beschriebenen Ausführungsbeispiele beschränkt. Abwandlungen im Rahmen der unabhängigen Patentansprüche sind möglich. Beispielsweise müssen die einzelnen Führungsabschnitte nicht alle Teil eines lösbar mit der Strecke verbindbaren Bandführers sein. Vielmehr können die einzelnen Führungsabschnitt unabhängig voneinander an einem Träger bzw. einem Rahmen der Strecke befestigt sein.The present invention is not limited to the illustrated and described embodiments. Modifications within the scope of the independent claims are possible. For example, the individual guide sections need not all be part of a strip guide that can be detachably connected to the track. Rather, the individual guide portion may be independently secured to a support or a frame of the track.
- 11
- Bandführerringleader
- 22
- Faserbandsliver
- 33
- Eingangsbereichentrance area
- 44
- Streckeroute
- 55
- erster Führungsabschnittfirst guide section
- 66
- zweiter Führungsabschnittsecond guide section
- 77
- dritter Führungsabschnittthird guide section
- 88th
- vierter Führungsabschnittfourth guide section
- 99
- Führungselementguide element
- 1010
- FührungsstabCorporate Office
- 1111
- Fixiermittelfixer
- 1212
- Durchbrechungperforation
- 1313
- Exzenterscheibeeccentric
- 1414
- Schwenkachseswivel axis
- 1515
- Zwischenführungintermediate guide
- 1616
- Drehtellerturntable
- 1717
- Unterwalzebottom roll
- 1818
- Streckwerkdrafting system
- 1919
- Faservliesnon-woven fabric
- 2020
- Umlenkungredirection
- 2121
- Spinnkannespinning can
- 2222
- Abzugsscheibedrafting wheel
- 2323
- Abzugseinrichtungoff device
- 2424
- Halterungholder
- 2525
- Oberwalzetop roll
- 2626
- Seitenwandungsidewall
- AA
- Abstanddistance
- TT
- Transportrichtung des StreckwerksTransport direction of the drafting system
Claims (14)
- Sliver guide for guiding a multiple number of fiber slivers (2) in an entrance area (3) of a draw frame (4),- with a first guide section (5) for guiding a first group of fiber slivers (2),- with a second guide section (6) for the separate guidance of a second group of fiber slivers (2),- whereas, in a side view of the sliver guide (1), the first guide section (5) and the second guide section (6) are spaced apart from each other,characterized in that the sliver guide (1) features a third guide section (7) which, in the specified side view, is spaced apart from the first guide section (5) and the second guide section (6), whereas lateral guide elements (9) are allocated to at least one of the guide sections (5; 6; 7) for the lateral guidance of fiber slivers (2), whereas the mutual distance (A) of the guide elements (9) is adjustable.
- Sliver guide in accordance with the preceding claim, characterized in that the sliver guide (1) features a fourth guide section (8) that, in the specified side view, is spaced apart from the first guide section (5), the second guide section (6) and the third guide section (7), whereas lateral guide elements (9) are likewise preferably allocated to the fourth guide section (8) for the lateral guidance of fiber slivers (2), whereas the mutual distance (A) of the guide elements (9) is preferably adjustable.
- Sliver guide in accordance with one of the preceding claims, characterized in that at least two of the guide sections (5; 6; 7; 8) run parallel to each other.
- Sliver guide in accordance with one of the preceding claims, characterized in that at least one of the guide sections (5; 6; 7; 8) is formed by a surface section of an elongated guide rod (10) that is mounted on one side or both sides.
- Sliver guide in accordance with the preceding claim, characterized in that at least one guide element (9) is in a positive-locking connection with a guide rod (10) and can be displaced in the longitudinal direction of the guide rod (10).
- Sliver guide in accordance with claim 4 or 5, characterized in that at least one guide element (9) comprises a fixing means (11), with the assistance of which it can be fixed with respect to the guide rod (10).
- Sliver guide in accordance with one of the claims 4 to 6, characterized in that at least one guide element (9) is formed by an eccentric disk (13) featuring an eccentrically arranged through hole (12), whereas the through hole (12) is preferably penetrated by the guide rod (10).
- Sliver guide in accordance with one of the preceding claims, characterized in that at least one guide element (9) is pivotable around a pivot axis (14).
- Sliver guide in accordance with one of the preceding claims, characterized in that the first guide section (5), the second guide section (6), the third guide section (7) and/or the fourth guide section (8) feature, in the direction of their longitudinal axis, one or more intermediate guides (15), with the assistance of which several fiber slivers (2) can be guided in a manner laterally spaced to each other.
- Sliver guide in accordance with the preceding claim, characterized in that at least one intermediate guide (15) can be displaced in the direction of a longitudinal axis of the guide section (5; 6; 7; 8) featuring the intermediate guides (15).
- Draw frame with at least one entrance area (3) for fiber slivers (2) to be drafted, and with at least one drafting system (18), comprising a multiple number of drafting system rollers (17),- whereas, in at least one entrance area (3), a first guide section (5) is arranged for guiding a first group of fiber slivers (2),- whereas, in the specified entrance area (3), a second guide section (6) for the separate guidance of a second group of fiber slivers (2) is arranged,- whereas the first guide section (5) and the second guide section (6) are, in a side view of the draw frame (4), spaced apart from each other,characterized in that , in the specified entrance area (3), a third guide section (7) is arranged, which, in the said side view, is spaced apart from the first and second guide sections (5; 6), whereas lateral guide elements (9) are allocated to at least one of the guide sections (5; 6 ;7) for the lateral guidance of fiber slivers (2), whereas the mutual distance (A) of the guide elements (9) is adjustable.
- Draw frame in accordance with the preceding claim, characterized in that in the specified entrance area, a fourth guide section (8) is arranged, which, in the specified side view, is spaced apart from the first guide section (5), the second guide section (6) and the third guide section (7), whereas it is preferable that lateral guide elements (9) are likewise allocated to the fourth guide section (8) for the lateral guidance of fiber slivers (2), whereas the mutual distance (A) of the guide elements is preferably adjustable.
- Draw frame in accordance with claim 11 or 12, characterized in that at least a part of the guide sections (5; 6; 7; 8) is formed by a sliver guide (1) in accordance with one of the claims 1 to 10.
- Draw frame in accordance with one of the claims 11 to 13, characterized in that the first guide section (5), the second guide section (6), the third guide section (7) and/or the fourth guide section (8) are aligned horizontally and/or perpendicular to a transport direction (T) of the drafting system (18).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014103598.4A DE102014103598A1 (en) | 2014-03-17 | 2014-03-17 | Band leader for a track as well as track |
PCT/EP2015/055391 WO2015140087A1 (en) | 2014-03-17 | 2015-03-16 | Sliver guide for a drawing frame, and drawing frame |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3119712A1 EP3119712A1 (en) | 2017-01-25 |
EP3119712B1 true EP3119712B1 (en) | 2019-08-07 |
Family
ID=52697389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15711110.5A Active EP3119712B1 (en) | 2014-03-17 | 2015-03-16 | Sliver guide for a drawing frame, and drawing frame |
Country Status (7)
Country | Link |
---|---|
US (1) | US10113251B2 (en) |
EP (1) | EP3119712B1 (en) |
JP (1) | JP2017512919A (en) |
CN (1) | CN106132856B (en) |
BR (1) | BR112016020075B1 (en) |
DE (1) | DE102014103598A1 (en) |
WO (1) | WO2015140087A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110791842B (en) * | 2019-11-07 | 2021-08-20 | 金迪(聊城市)知识产权运营有限公司 | Drawing optimizing device for spinning |
CN111254534B (en) * | 2020-02-28 | 2020-11-20 | 日照春澳塑料网袋有限公司 | Conducting bar width adjusting device applied to drawing frame |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191106823A (en) | 1909-03-25 | 1911-05-25 | Siemens Ag | Improvements in Apparatus for Automatically Recording Intervals of Time between the Passage of Trains on a Track and the Speed of the Trains. |
GB191006823A (en) * | 1910-03-18 | 1911-03-02 | William Thomas Smith | Improvements in the Drawing or Preparing of Fibes for Spinning, and in Apparatus therefor, |
US2357982A (en) * | 1942-06-26 | 1944-09-12 | Prentice M Thomas | Drawing and cleaning attachment for carding machines |
US3216064A (en) * | 1963-04-23 | 1965-11-09 | Du Pont | Method and apparatus for drawingframe blending of slivers in the preparation of yarncomposed of different lengths of fibers |
JPS5547879Y2 (en) * | 1975-12-13 | 1980-11-10 | ||
JPH0651932B2 (en) * | 1990-08-27 | 1994-07-06 | 午一 片山 | Method of blending sliver in gil training machine and sliver guide device therefor |
DE4118957A1 (en) * | 1991-06-08 | 1992-12-10 | Fritz Stahlecker | SPIDER |
DE4142038C5 (en) * | 1991-12-19 | 2012-03-15 | Rieter Ingolstadt Gmbh | Apparatus for processing a plurality of slivers |
JPH0589462U (en) * | 1992-04-28 | 1993-12-07 | 鐘紡株式会社 | Front spinning machine |
DE19528484A1 (en) * | 1995-08-03 | 1997-02-06 | Truetzschler Gmbh & Co Kg | Device on a line for measuring the thickness of a fiber structure |
DE19853192B4 (en) * | 1997-12-13 | 2013-10-10 | Trützschler GmbH & Co Kommanditgesellschaft | Device on a fiber-processing, a drafting textile machine for guiding a fiber structure |
DE10347811A1 (en) | 2003-10-10 | 2005-06-02 | Trützschler GmbH & Co KG | Device on a track for feeding slivers to a drafting system of at least two pairs of rollers |
WO2011138754A1 (en) * | 2010-05-05 | 2011-11-10 | Ismail Gokhan Gunduzalp | Traction unit for welded yarn |
-
2014
- 2014-03-17 DE DE102014103598.4A patent/DE102014103598A1/en not_active Withdrawn
-
2015
- 2015-03-16 EP EP15711110.5A patent/EP3119712B1/en active Active
- 2015-03-16 CN CN201580013948.3A patent/CN106132856B/en active Active
- 2015-03-16 WO PCT/EP2015/055391 patent/WO2015140087A1/en active Application Filing
- 2015-03-16 BR BR112016020075-6A patent/BR112016020075B1/en active IP Right Grant
- 2015-03-16 US US15/126,826 patent/US10113251B2/en active Active
- 2015-03-16 JP JP2016556818A patent/JP2017512919A/en active Pending
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
CN106132856A (en) | 2016-11-16 |
CN106132856B (en) | 2019-04-09 |
JP2017512919A (en) | 2017-05-25 |
US10113251B2 (en) | 2018-10-30 |
DE102014103598A1 (en) | 2015-09-17 |
BR112016020075A2 (en) | 2017-08-15 |
EP3119712A1 (en) | 2017-01-25 |
WO2015140087A1 (en) | 2015-09-24 |
US20170088978A1 (en) | 2017-03-30 |
BR112016020075B1 (en) | 2021-09-08 |
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