EP1660708B1 - Channel plate for an open-ended rotor spinning device - Google Patents
Channel plate for an open-ended rotor spinning device Download PDFInfo
- Publication number
- EP1660708B1 EP1660708B1 EP04739736A EP04739736A EP1660708B1 EP 1660708 B1 EP1660708 B1 EP 1660708B1 EP 04739736 A EP04739736 A EP 04739736A EP 04739736 A EP04739736 A EP 04739736A EP 1660708 B1 EP1660708 B1 EP 1660708B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel plate
- rotor
- spinning
- channel
- outlet opening
- 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 - Lifetime
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- 238000007383 open-end spinning Methods 0.000 title claims description 13
- 238000009987 spinning Methods 0.000 claims description 40
- 239000000835 fiber Substances 0.000 claims description 25
- 230000007704 transition Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 229920000728 polyester Polymers 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
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
-
- 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
- D01H4/38—Channels for feeding fibres to the yarn forming region
Definitions
- the invention relates to a channel plate for an open-end rotor spinning device according to the preamble of claim 1.
- Open-end rotor spinning devices with a forwardly open rotor housing, which is closed during the spinning operation by a so-called channel plate, are state of the art and described in detail in numerous patent applications.
- channel plates are known, which are integrated directly into a pivotally mounted cover element of the open-end rotor spinning device, as well as channel plates which can be screwed into the cover element. Furthermore, channel plates are known which have a central bearing receptacle in which a channel plate adapter is easily replaceable fixed.
- Modern open-end spinning devices have, for example, a fiber channel plate integrated into the cover element, which closes the rotor housing which can be pressurized with negative pressure during the spinning process with a lip seal.
- a feed roller and an opening roller for the sliver is also stored.
- Such a channel plate with a replaceable channel plate adapter is for example in the DE 197 29 192 A1 described in relative detail.
- the channel plate adapter consist essentially of an insert body, the contact surface is precisely matched to the shape and size of the central bearing receptacle in the fiber channel plate, as well as a channel plate tower, which projects into the spinning rotor with the spinning device closed.
- a locking projection is arranged on the back with a central bore in which a thread withdrawal tube is positioned.
- the central bore in the insert body of the channel plate adapter also penetrates the channel plate tower, on the end face of which a thread withdrawal nozzle is fixed, which engages in the central bore of the channel plate adapter.
- the channel plate tower also has, on its lateral surface, the outlet opening of a fiber guide channel, which pneumatically connects the sliver opening device arranged in the cover element to the spinning rotor.
- Such channel plate adapters are preferably tuned to a specific rotor shape and / or rotor size, so that an accurate sliver feed and an optimal thread take-off can be ensured under all production conditions.
- channel plate adapters have long been in use in practice and have been used in almost all Fiber materials and almost all yarn strengths proven excellent.
- the invention has for its object to modify the well-known and proven channel plates or channel plate adapter to the effect that an increase in the rotor speeds and thus an increase in production capacity of open-end rotor spinning devices, especially when spinning yarns with a relatively high polyester content is possible without the risk that the fibers are thermally damaged.
- the arrangement of the outlet opening of the Faserleitkanals at most in a cylindrical region of the lateral surface of the channel plate tower has the advantage that by such a modification of the channel plate tower, in particular by the reduction of the distance of the end face of the channel plate tower adjacent wall portion of the outlet opening of the Faserleitkanals to the central longitudinal axis of the channel plate, the opening angle between the fiber slipper surface of the spinning rotor and the front portion of the lateral surface of the channel plate tower is increased.
- both the thermal load of the open-end spinning device is lowered to an uncritical for polyester yarns measure, as well as an improved alignment of the individual fibers transporting air flow achieved.
- the acute-angled impact of the fibers on the sliding surface of the spinning rotor leads overall to a more gentle feeding of the fibers.
- the wall region of the outlet opening furthest away from the end face of the channel plate tower has a significantly greater distance from the central longitudinal axis of the channel plate.
- Modified channel plates even with yarns made of polyester or polyester blends, the speed of the spinning rotor and thus significantly increase the thread withdrawal speed, without causing thermal damage to the fibers occur.
- the number of yarn breaks occurring during the spinning process goes back when using the channel plate according to the invention by up to 30%.
- the channel plate is formed in two parts.
- the channel plate has a central bearing receptacle in which a channel plate adapter is exchangeable fixed.
- the channel plate adapter consists of an insert body, which is tuned in shape and size to the bearing receptacle of the channel plate, and a channel plate tower, which is formed as already explained above.
- the invention has proved to be particularly advantageous when the diameter of the arranged in the rotor cup of the spinning rotor rotor groove is less than 30 mm.
- open-end spinning device carries the total number 1.
- Such spinning devices 1 have, as is known, a rotor housing 2 in which the spinning cup 26 of a spinning rotor 3 rotates at high speed.
- the spinning rotor 3 is supported with its rotor shaft 4 in the bearing gusset of a preferably axially thrust-free support disk bearing 5.
- the spinning rotor 3 is driven by a machine-tangential belt 6, which is employed by a pressure roller 7 to the rotor shaft 4.
- the axial positioning of the rotor shaft 4 in the bearing gusset of the support disk bearing 5 preferably takes place via a permanent magnetic thrust bearing 18.
- the rotor housing 2 which in itself is open towards the front, is closed by a pivotally mounted cover element 8 during the spinning operation.
- the cover element 8 has for this purpose a channel plate 27 with a seal 9.
- the rotor housing 2 is also connected via a suction line 10 to a vacuum source 11, which generates the necessary spin pressure in the rotor housing 2.
- a channel plate adapter 12 is interchangeably arranged in a central bearing receptacle 34 of the channel plate 27 which, as in, for example, FIG Figure 3 shown on a larger scale, consisting essentially of an insert body 28 with a contact surface 37 and a channel plate tower 30.
- the outlet opening 31 of a Faserleitkanals 14 is arranged.
- cross-sectional area of the cylindrical portion does not have to be circular.
- a lateral surface portion having parallel generatrices is understood according to mathematical definition, a lateral surface portion having parallel generatrices.
- the channel plate tower 30 has a central through-bore 38, in which a yarn withdrawal nozzle 13 on the input side and a yarn withdrawal tube 15 on the output side are fixed.
- an opening roller housing 17 is fixed or integrated into the cover element on the cover element 8, which is mounted so as to be limited rotatably about a pivot axis 16.
- the cover element 8 further has rear bearing brackets 19, 20 for supporting an opening roller 21 or a sliver feed cylinder 22.
- the opening roller 21 is thereby driven in the area of its whorl 23 by a rotating, machine-long tangential belt 24, while the drive (not shown) of the sliver feed cylinder 22 preferably via a worm gear arrangement, which is connected to a machine-length drive shaft 25.
- FIG. 2 shows on a larger scale a channel plate 27 for closing the motor housing 2 of an open-end spinning device. 1
- the channel plate 27 has an inventively modified channel plate tower 30, which is positioned with the rotor housing 2 closed within the rotor cup 26 of a spinning rotor 3.
- the channel plate tower 30 has the front side, in a through-bore 38, a thread withdrawal nozzle 13, which is non-positively lockable via permanent magnet pins 39. On the output side, a thread withdrawal tube 15 is fixed in the through hole 38.
- an outlet opening 31 of a Faserleitkanals 14 is arranged, which connects the sliver disassembly device pneumatically with the rotor housing.
- the outlet opening 31 of the Faserleitkanales 14 is in the spinning position, that is, with a closed rotor housing 2, a fiber slipper surface 40 of the spinning rotor 3 in such a way that the emerging from the fiber guide 14 fibers are fed to the Faserlois Chemistry 40 at a relatively acute angle.
- the fed fibers then pass through the fiber slide surface 40 into the rotor groove 41 of the spinning rotor 3, where, as is known, the formation of a thread takes place, which is then removed via the tube 15.
- the diameter of the rotor groove 41 in the rotor cup 26 of the spinning rotor 3 is preferably less than 30 mm.
- channel plate 27 and a modified according to the invention channel plate adapter 12 of the channel plate tower 30 compared to the usual channel plate adapters, which in the FIGS. 4 and 6 are shown, formed so that in particular of the end face 42 of the channel plate tower 30 adjacent wall portion 32 of the outlet opening 31 is lowered relative to the lying behind the outlet opening 31 wall portion 33.
- the channel plate tower 30 is formed so that in particular a cylindrical Mantelfambaenabêt 50 has a distance b from the central longitudinal axis M of the channel plate 27, while the distance a in the rear wall portion 33 remains unchanged.
- This measure leads, in particular a comparison of the FIGS. 4 . 6 with the Figures 5 . 7 shows, to a significant enlargement of the outlet opening 31 of the fiber guide 14 in the direction of the spinning rotor. 3
- FIGS. 4 and 6 a channel plate adapter 12 with known channel plate tower is shown in side view and in plan view, while the Figures 5 and 7 a channel plate adapter 12 with an inventively modified channel plate tower 30 show.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
Die Erfindung betrifft eine Kanalplatte für eine Offenend-Rotorspinnvorrichtung gemäß dem Oberbegriff des Anspruches 1.The invention relates to a channel plate for an open-end rotor spinning device according to the preamble of
Offenend-Rotorspinnvorrichtungen mit einem nach vorne hin offenen Rotorgehäuse, das während des Spinnbetriebes durch eine sogenannte Kanalplatte verschlossen ist, sind Stand der Technik und in zahlreichen Schutzrechtsanmeldungen ausführlich beschrieben.Open-end rotor spinning devices with a forwardly open rotor housing, which is closed during the spinning operation by a so-called channel plate, are state of the art and described in detail in numerous patent applications.
In diesem Zusammenhang sind sowohl Kanalplatten bekannt, die direkt in ein schwenkbar gelagertes Deckelelement der Offenend-Rotorspinnvorrichtung integriert sind, als auch Kanalplatten, die in das Deckelelement einschraubbar sind. Des weiteren sind Kanalplatten bekannt, die eine zentrale Lageraufnahme aufweisen, in der ein Kanalplattenadapter leicht auswechselbaren festlegbar ist.In this connection, both channel plates are known, which are integrated directly into a pivotally mounted cover element of the open-end rotor spinning device, as well as channel plates which can be screwed into the cover element. Furthermore, channel plates are known which have a central bearing receptacle in which a channel plate adapter is easily replaceable fixed.
Moderne Offenend-Spinnvorrichtungen verfügen beispielsweise über eine in das Deckelelement integrierte Faserkanalplatte, die während des Spinnprozesses mit einer Lippendichtung das unterdruckbeaufschlagbare Rotorgehäuse verschließt.Modern open-end spinning devices have, for example, a fiber channel plate integrated into the cover element, which closes the rotor housing which can be pressurized with negative pressure during the spinning process with a lip seal.
Im Deckelelement, das die gesamte Frontseite der Offenend-Rotorspinnvorrichtung überdeckt, ist dabei außerdem eine Einzugswalze sowie eine Auflösewalze für das Faserband gelagert.In the cover element, which covers the entire front side of the open-end rotor spinning device, a feed roller and an opening roller for the sliver is also stored.
Eine solche Kanalplatte mit einem auswechselbaren Kanalplattenadapter ist beispielsweise in der
Der Kanalplattenadapter bestehen im wesentlichen aus einem Einsatzkörper, dessen Anlagefläche exakt auf die Form und die Größe der zentralen Lageraufnahme in der Faserkanalplatte abgestimmt ist, sowie aus einem Kanalplattenturm, der bei geschlossener Spinnvorrichtung in den Spinnrotor ragt.The channel plate adapter consist essentially of an insert body, the contact surface is precisely matched to the shape and size of the central bearing receptacle in the fiber channel plate, as well as a channel plate tower, which projects into the spinning rotor with the spinning device closed.
Am Einsatzkörper ist rückseitig ein Arretierungsansatz mit einer zentralen Bohrung angeordnet, in der ein Fadenabzugsröhrchen positioniert ist.On the insert body, a locking projection is arranged on the back with a central bore in which a thread withdrawal tube is positioned.
Über den Arretierungsansatz sowie ein entsprechendes Riegelelement, beispielsweise eine Stabfeder, sowie einen Zentrierstift kann ein solcher Kanalplattenadapter definiert in der Lageraufnahme der Faserkanalplatte festgelegt werden. Die zentrale Bohrung im Einsatzkörper des Kanalplattenadapters durchdringt auch den Kanalplattenturm, an dessen Stirnfläche eine Fadenabzugsdüse festgelegt ist, die in die zentrale Bohrung des Kanalplattenadapters faßt.About the Arretierungsansatz and a corresponding locking element, such as a bar spring, and a centering such a channel plate adapter defined in the bearing receptacle of the fiber channel plate can be defined. The central bore in the insert body of the channel plate adapter also penetrates the channel plate tower, on the end face of which a thread withdrawal nozzle is fixed, which engages in the central bore of the channel plate adapter.
Der Kanalplattenturm weist auf seiner Mantelfläche außerdem die Austrittsöffnung eines Faserleitkanales auf, der die im Deckelelement angeordnete Faserbandauflöseeinrichtung pneumatisch durchgängig mit dem Spinnrotor verbindet.The channel plate tower also has, on its lateral surface, the outlet opening of a fiber guide channel, which pneumatically connects the sliver opening device arranged in the cover element to the spinning rotor.
Derartige Kanalplattenadapter sind vorzugsweise auf eine bestimmte Rotorform und/oder Rotorgröße abgestimmt, so daß bei allen Produktionsbedingungen eine genaue Faserbandeinspeisung und ein optimaler Fadenabzug gewährleistet werden kann.Such channel plate adapters are preferably tuned to a specific rotor shape and / or rotor size, so that an accurate sliver feed and an optimal thread take-off can be ensured under all production conditions.
Das bedeutet, bei einem Partiewechsel, der auch einen Spinnrotorwechsel bedingt, wird in der Regel auch der Kanalplattenadapter ausgetauscht.This means that in a lot change, which also requires a spinning rotor change, the channel plate adapter is usually replaced.
Die vorbeschriebenen Kanalplattenadapter sind in der Praxis seit langem im Einsatz und haben sich bei fast allen Fasermaterialien und nahezu allen Garnstärken hervorragend bewährt.The above-described channel plate adapters have long been in use in practice and have been used in almost all Fiber materials and almost all yarn strengths proven excellent.
Es hat sich allerdings gezeigt, daß beim Spinnen von Garnen aus Polyester bzw. von Garnen, deren Material einen relativ hohen Polyesteranteil aufweist, hinsichtlich der Rotordrehzahl der Offenend-Spinnvorrichtung einige Abstriche gemacht werden müssen, da sonst die Gefahr von Schmelzstellen gegeben ist. Das heißt, mit den bekannten Kanalplatten oder den bekannten Kanalplattenadaptern lassen sich Rotordrehzahlen von über 100.000 Umdrehungen pro Minute bei Garnen mit einem relativ hohen Polyesteranteil gefahrlos kaum realisieren.However, it has been found that when spinning yarns of polyester or yarns whose material has a relatively high proportion of polyester, with regard to the rotor speed of the open-end spinning device some compromises must be made, otherwise the risk of melting is given. That is, with the known channel plates or the known Kanalplattenadaptern can rotor speeds of over 100,000 revolutions per minute for yarns with a relatively high percentage of polyester hardly realize.
Der Erfindung liegt die Aufgabe zugrunde, die an sich bekannten und bewährten Kanalplatten bzw. Kanalplattenadapter dahingehend zu modifizieren, daß eine Erhöhung der Rotordrehzahlen und damit auch eine Erhöhung der Produktionsleistung von Offenend-Rotorspinnvorrichtungen, insbesondere beim Spinnen von Garnen mit einem relativ hohen Polyesteranteil möglich ist, ohne daß dabei die Gefahr besteht, daß die Fasern thermisch geschädigt werden.The invention has for its object to modify the well-known and proven channel plates or channel plate adapter to the effect that an increase in the rotor speeds and thus an increase in production capacity of open-end rotor spinning devices, especially when spinning yarns with a relatively high polyester content is possible without the risk that the fibers are thermally damaged.
Diese Aufgabe wird erfindungsgemäß durch eine Kanalplatte gelöst, die die im Anspruch 1 beschriebenen Merkmale aufweist.This object is achieved by a channel plate having the features described in
Eine vorteilhafte Ausführungsform einer derartigen Kanalplatte ist im Unteranspruch beschrieben.An advantageous embodiment of such a channel plate is described in the subclaim.
Die Anordnung der die Austrittsöffnung des Faserleitkanals höchstens zur Hälfte in einem zylindrischen Bereich der Mantelfläche des Kanalplattenturms hat den Vorteil, daß durch eine solche Modifizierung des Kanalplattenturmes, insbesondere durch die Verringerung des Abstandes des der Stirnfläche des Kanalplattenturms benachbarten Wandungsbereichs der Austrittsöffnung des Faserleitkanals zur Mittellängsachse der Kanalplatte, der Öffnungswinkel zwischen der Faserrutschfläche des Spinnrotors und dem vorderen Bereich der Mantelfläche des Kanalplattenturms vergrößert wird.The arrangement of the outlet opening of the Faserleitkanals at most in a cylindrical region of the lateral surface of the channel plate tower has the advantage that by such a modification of the channel plate tower, in particular by the reduction of the distance of the end face of the channel plate tower adjacent wall portion of the outlet opening of the Faserleitkanals to the central longitudinal axis of the channel plate, the opening angle between the fiber slipper surface of the spinning rotor and the front portion of the lateral surface of the channel plate tower is increased.
Eine solche Vergrößerung des Öffnungswinkels beeinflußt sowohl den Luftdurchsatz durch den Faserleitkanal als auch die Aufspeisung der über den Fäserleitkanal angelieferten Fasern auf die Faserrutschfläche des Spinnrotors positiv.Such an enlargement of the opening angle positively affects both the air flow through the fiber guide channel and the feeding of the fibers delivered via the Fäserleitkanal onto the fiber slide surface of the spinning rotor.
Das heißt, durch die erfindungsgemäße Ausbildung wird sowohl die thermische Belastung der Offenend-Spinnvorrichtung auf einauch für Polyestergarne unkritisches Maß gesenkt, als auch eine verbesserte Ausrichtung der die Einzelfasern transportierenden Luftströmung erreicht.That is, the inventive design, both the thermal load of the open-end spinning device is lowered to an uncritical for polyester yarns measure, as well as an improved alignment of the individual fibers transporting air flow achieved.
Das spitzwinkelige Auftreffen der Fasern auf die Rutschfläche des Spinnrotors führt insgesamt zu einer schonenderen Aufspeisung der Fasern.The acute-angled impact of the fibers on the sliding surface of the spinning rotor leads overall to a more gentle feeding of the fibers.
Des weiteren weist der von der Stirnseite des Kanalplattenturms am weitesten entfernt liegende Wandungsbereich der Austrittsöffnung einen deutlich größeren Abstand zur Mittellängsachse der Kanalplatte auf.Furthermore, the wall region of the outlet opening furthest away from the end face of the channel plate tower has a significantly greater distance from the central longitudinal axis of the channel plate.
Durch Beibehaltung der Kanalplattenkontur im Bereich hinter der Austrittsöffnung des Faserleitkanals wird gleichzeitig wirksam verhindert, daß die über den Faserleitkanal anstehende Luftströmung sofort an der Vorderkante des Spinnrotors vorbei abströmen kann und dadurch verhindert, daß die pneumatisch herangeführten Fasern auf die Faserrutschfläche des Spinnrotors aufgespeist werden.By maintaining the channel plate contour in the area behind the outlet opening of the fiber guide simultaneously effectively prevents the pending on the Faserleitkanal air flow can flow off immediately past the leading edge of the spinning rotor and thereby prevents the pneumatically brought up fibers are fed onto the fiber sliding surface of the spinning rotor.
Aufgrund der Verbesserung des Strömungsverlaufes der Fasertransportluftströmung lassen sich mit erfindungsgemäß modifizierten Kanalplatten auch bei Garnen aus Polyester oder Polyestermischungen die Drehzahl des Spinnrotors und damit die Fadenabzugsgeschwindigkeit deutlich erhöhen, ohne daß dabei thermische Schädigungen an den Fasern auftreten.Due to the improvement of the flow profile of the fiber transport air flow can be according to the invention Modified channel plates, even with yarns made of polyester or polyester blends, the speed of the spinning rotor and thus significantly increase the thread withdrawal speed, without causing thermal damage to the fibers occur.
Beim Spinnen von Baumwollgarnen zeigt die erfindungsgemäße Ausbildung ebenfalls deutliche Vorteile.When spinning cotton yarns training according to the invention also shows significant advantages.
Bei Baumwollgarnen wird beispielsweise sowohl die Garnfestigkeit als auch die Spinnstabilität während des Spinnprozesses erhöht.For cotton yarns, for example, both yarn strength and spin stability are increased during the spinning process.
Das heißt, die Anzahl der während des Spinnprozesses auftretenden Fadenbrüche geht beim Einsatz der erfindungsgemäßen Kanalplatte um bis zu 30 % zurück.That is, the number of yarn breaks occurring during the spinning process goes back when using the channel plate according to the invention by up to 30%.
Wie im Anspruch 2 beschrieben, ist in bevorzugter Ausführungsform vorgesehen, daß die Kanalplatte zweiteilig ausgebildet ist.As described in
Das heißt, die Kanalplatte weist eine zentrale Lageraufnahme auf, in der ein Kanalplattenadapter auswechselbar festlegbar ist.That is, the channel plate has a central bearing receptacle in which a channel plate adapter is exchangeable fixed.
Der Kanalplattenadapter besteht dabei aus einem Einsatzkörper, der in Form und Größe auf die Lageraufnahme der Kanalplatte abgestimmt ist, sowie einem Kanalplattenturm, der wie vorstehend bereits erläutert ausgebildet ist.The channel plate adapter consists of an insert body, which is tuned in shape and size to the bearing receptacle of the channel plate, and a channel plate tower, which is formed as already explained above.
Auch beim Einsatz eines solchen Kanalplattenadapters ergeben sich bei entsprechender Modifikation des Kanalplattenturms die vorstehend beschriebenen Verbesserungen der Strömungsverhältnisse.Even with the use of such a channel plate adapter, the above-described improvements of the flow conditions result with a corresponding modification of the channel plate tower.
Das heißt, entsprechende Versuche haben gezeigt das mit Kanalplattenadaptern, die die erfindunggemäße Modifikation aufweisen höchste Fadenabzugsgeschwindigkeiten bei hoher Garnqulität realisierbar sind.That is to say, corresponding tests have shown that with channel plate adapters which have the modification according to the invention, highest yarn take-off speeds can be achieved with high yarn count.
Die Vorteile der Erfindung kommen insbesondere bei relativ kleinen Spinnrotoren zum Tragen.The advantages of the invention are particularly relevant for relatively small spinning rotors.
Das heißt, die Erfindung hat sich als besonders vorteilhaft erwiesen, wenn der Durchmesser der in der Rotortasse des Spinnrotors angeordnete Rotorrille unter 30 mm beträgt.That is, the invention has proved to be particularly advantageous when the diameter of the arranged in the rotor cup of the spinning rotor rotor groove is less than 30 mm.
Die Erfindung wird nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert.The invention will be explained in more detail with reference to an embodiment shown in the drawings.
Es zeigt:
- Fig. 1
- in Seitenansicht eine Offenend-Spinnvorrichtung mit einer in einem Deckelelement angeordneten Kanalplatte, bei der in einer zentralen Lageraufnahme auswechselbar ein Kanalplattenadapter angeordnet ist,
- Fig. 2
- in Seitenansicht in einem größeren Maßstab eine Kanalplatte mit einem erfindungsgemäß modifizierten Kanalplattenturm,
- Fig. 3
- in Seitenansicht in einem größeren Maßstab eine Kanalplatte, bei der in einer zentralen lageraufnahme auswechselbar ein Kanalplattenadapter angeordnet ist, der einen erfindungsgemäß modifizierten Kanalplattenturm aufweist,
- Fig. 4
- in Seitenansicht einen Kanalplattenadapter gemäß Stand der Technik, wobei die Austrittsöffnung eines Faserleitkanales in Draufsicht dargestellt ist,
- Fig. 5
- in Seitenansicht einen erfindungsgemäß modifizierten Kanalplattenadapter, mit der Austrittsöffnung eines Faserleitkanales in Draufsicht,
- Fig. 6
- eine Vorderansicht eines Kanalplattenadapters gemäß Stand der Technik,
- Fig. 7
- eine Vorderansicht eines Kanalplattenadapters gemäß vorliegender Erfindung.
- Fig. 1
- a side view of an open-end spinning device with a channel plate arranged in a cover element, in which a channel plate adapter is interchangeably arranged in a central bearing receptacle,
- Fig. 2
- in a side view on a larger scale a channel plate with a duct plate tower modified according to the invention,
- Fig. 3
- in side view on a larger scale, a channel plate, in which a channel plate adapter is interchangeably arranged in a central bearing receptacle, which has a tunnel plate tower modified according to the invention,
- Fig. 4
- a side view of a channel plate adapter according to the prior art, wherein the outlet opening of a Faserleitkanales is shown in plan view,
- Fig. 5
- in side view a modified according to the invention channel plate adapter, with the outlet opening of a Faserleitkanales in plan view,
- Fig. 6
- a front view of a channel plate adapter according to the prior art,
- Fig. 7
- a front view of a channel plate adapter according to the present invention.
Die in
Derartige Spinnvorrichtungen 1 verfügen, wie bekannt, über ein Rotorgehäuse 2, in dem die Spinntasse 26 eines Spinnrotors 3 mit hoher Drehzahl umläuft. Gemäß vorliegendem Ausführungsbeispiel ist der Spinnrotor 3 mit seinem Rotorschaft 4 im Lagerzwickel einer vorzugsweise axialschubfreien Stützscheibenlagerung 5 abgestützt.
Der Spinnrotor 3 wird dabei durch einen maschinenlangen Tangentialriemen 6, der durch eine Andrückrolle 7 an den Rotorschaft 4 angestellt wird, angetrieben.The spinning
Die axiale Positionierung des Rotorschaftes 4 im Lagerzwickel der Stützscheibenlagerung 5 erfolgt vorzugsweise über ein permanentmagnetisches Axiallager 18.The axial positioning of the
Wie üblich, ist das an sich nach vorne hin offene Rotorgehäuse 2 während des Spinnbetriebes durch ein schwenkbar gelagertes Deckelelement 8 verschlossen. Das Deckelelement 8 weist zu diesem Zweck eine Kanalplatte 27 mit einer Dichtung 9 auf.As usual, the
Das Rotorgehäuse 2 ist außerdem über eine Absaugleitung 10 an eine Unterdruckquelle 11 angeschlossen, die den im Rotorgehäuse 2 notwendigen Spinnunterdruck erzeugt.The
Des weiteren ist in einer zentralen Lageraufnahme 34 der Kanalplatte 27 auswechselbar ein Kanalplattenadapter 12 angeordnet, der wie beispielsweise in
In der Mantelfläche des Kanalplattenturms 30, die einen zylindrischen Bereich 50 und einen konkav gewölbten Bereich 60 aufweist, ist die Austrittsöffnung 31 eines Faserleitkanals 14 angeordnet.In the lateral surface of the
Es sei dabei ausdrücklich darauf hingewiesen, daß die Querschnittsfläche des zylindrischen Bereiches nicht kreisrund sein muß. Unter zylindrischem Bereich wird gemäß mathematischer Definition ein Mantelflächenabschnitt verstanden, der parallele Mantellinien aufweist.It should be expressly understood that the cross-sectional area of the cylindrical portion does not have to be circular. Under cylindrical area is understood according to mathematical definition, a lateral surface portion having parallel generatrices.
Außerdem weist der Kanalplattenturm 30 eine zentrale Durchgangsbohrung 38 auf, in der eingangsseitig eine Fadenabzugsdüse 13 und ausgangsseitig ein Fadenabzugsröhrchen 15 festgelegt sind.In addition, the
Wie in
Das Deckelelement 8 besitzt des weiteren rückwärtige Lagerkonsolen 19, 20 zur Lagerung einer Auflösewalze 21 beziehungsweise eines Faserbandeinzugszylinders 22.The
Die Auflösewalze 21 wird dabei im Bereich ihres Wirtels 23 durch einen umlaufenden, maschinenlangen Tangentialriemen 24 angetrieben, während der (nicht dargestellte) Antrieb des Faserbandeinzugszylinders 22 vorzugsweise über eine Schneckengetriebeanordnung erfolgt, die auf eine maschinenlange Antriebswelle 25 geschaltet ist.The opening
Die
Die Kanalplatte 27 verfügt über einen erfindungsgemäß modifizierten Kanalplattenturm 30, der bei geschlossenem Rotorgehäuse 2 innerhalb der Rotortasse 26 eines Spinnrotors 3 positioniert ist.The
Der Kanalplattenturm 30 weist stirnseitig, in einer Durchgangsbohrung 38, eine Fadenabzugsdüse 13 auf, die über Permanentmagnetstifte 39 kraftschlüssig arretierbar ist. Ausgangsseitig ist in der Durchgangsbohrung 38 ein Fadenabzugsröhrchen 15 festgelegt.The
Wie ersichtlich, ist im Bereich der Mantelfläche des Kanalplattenturms 30 eine Austrittsöffnung 31 eines Faserleitkanals 14 angeordnet, der die Faserbandauflöseeinrichtung pneumatisch mit dem Rotorgehäuse verbindet.As can be seen, in the region of the lateral surface of the
Die Austrittsöffnung 31 des Faserleitkanales 14 liegt in Spinnstellung, das heißt bei geschlossenem Rotorgehäuse 2, einer Faserrutschfläche 40 des Spinnrotors 3 derart gegenüber, daß die aus dem Faserleitkanal 14 austretenden Fasern unter einem relativ spitzen Winkel auf die Faserrutschfläche 40 aufgespeist werden.The
Die aufgespeisten Fasern gelangen anschließend über die Faserrutschfläche 40 in die Rotorrille 41 des Spinnrotors 3, wo, wie bekannt, die Bildung eines Fadens stattfindet, der anschließend über das Röhrchen 15 abgezogen wird.The fed fibers then pass through the
Der Durchmesser der Rotorrille 41 in der Rotortasse 26 des Spinnrotors 3 beträgt dabei vorzugsweise unter 30 mm.The diameter of the
Bei einer erfindungsgemäß modifizierten Kanalplatte 27 bzw. einem erfindungsgemäß modifizierten Kanalplattenadapter 12 ist der Kanalplattenturm 30 gegenüber den bislang üblichen Kanalplattenadaptern, die in den
Das heißt, vorzugsweise ist der Kanalplattenturm 30 so ausgebildet, daß insbesondere ein zylindrischer Mantelfächenabschnitt 50 einen Abstand b von der Mittellängsachse M der Kanalplatte 27 aufweist, während der Abstand a im hinteren Wandungsbereich 33 unverändert bleibt. Diese Maßnahme führt, wie insbesondere ein Vergleich der
In den
Claims (3)
- Channel plate for an open-ended rotor spinning device for closing a rotor housing which can be subjected to a vacuum during the spinning process and in which a spinning rotor circulates, comprising a channel plate projection (30) reaching into the spinning rotor, in the outer surface of which the outlet opening (31) of a fibre guide channel (14) is arranged and in the end face (42) of which a thread draw-off nozzle (13) can be fixed, wherein a concavely curved transition face (60) abuts a cylindrical part of the outer surface (50) and the channel plate projection (30) has a diameter at the level of the rotor edge of the spinning rotor (3) such that an annular gap with a gap width of a maximum of 2 mm is formed during the spinning process between the spinning rotor (3) and channel plate projection (30), characterised in that
the outlet opening (31) of the fibre guide channel (14) is arranged, at the most half of it, in the region of the cylindrical outer surface (50) and with its remaining part is arranged in the region of the curved transition face (60) and
in that the wall region (33) of the outlet opening (31) located furthest away from the end face (42) has a spacing (a) from the longitudinal central axis (M) of the channel plate (27), which is at least 0.5 to 3 mm greater than the spacing (b) of the wall region (32) of the outlet opening (31) located adjacent to the end face (42) from the longitudinal central axis (M). - Channel plate according to claim 1, characterised in that the channel plate (27) is in two parts and has a central bearing mount (34), in which an exchangeable channel plate adapter (12) can be fixed, which has an insertion body (28) matched to the bearing mount (34), as well as a channel plate projection (30) reaching into the spinning cup (26) of the spinning rotor (3).
- Channel plate according to claim 1, characterised in that it is dimensioned such that it is suitable for spinning rotors (3) which have a rotor groove (41) with a diameter of a maximum of 30 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10339875A DE10339875A1 (en) | 2003-08-29 | 2003-08-29 | Cap for open-ended spinning rotor has a cover over a reduced-pressure chamber with a fibre outlet to a fibre jet to a concave transitional surface |
| PCT/EP2004/006228 WO2005031050A1 (en) | 2003-08-29 | 2004-06-09 | Channel plate for an open-ended rotor spinning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1660708A1 EP1660708A1 (en) | 2006-05-31 |
| EP1660708B1 true EP1660708B1 (en) | 2010-08-25 |
Family
ID=34202209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04739736A Expired - Lifetime EP1660708B1 (en) | 2003-08-29 | 2004-06-09 | Channel plate for an open-ended rotor spinning device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7181901B2 (en) |
| EP (1) | EP1660708B1 (en) |
| CN (1) | CN100469959C (en) |
| BR (1) | BRPI0413806B1 (en) |
| DE (2) | DE10339875A1 (en) |
| WO (1) | WO2005031050A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7749471B2 (en) * | 2004-11-30 | 2010-07-06 | Chevron U.S.A. Inc. | Reduction of oxides of nitrogen in a gas stream using boron-containing molecular sieve CHA |
| DE102008050071A1 (en) * | 2008-10-01 | 2010-04-08 | Oerlikon Textile Gmbh & Co. Kg | Open-end rotor spinning device |
| DE102009012045A1 (en) * | 2009-03-06 | 2010-09-09 | Oerlikon Textile Gmbh & Co. Kg | Open-end rotor spinning device |
| CN102704062A (en) * | 2012-06-21 | 2012-10-03 | 河北金纺机械制造有限公司 | Air extraction revolving cup spinning machine capable of producing low-twist bulky yarns |
| CZ2012591A3 (en) * | 2012-08-30 | 2014-03-12 | Rieter Cz S.R.O. | Rotor spinning machine spinning apparatus |
| DE102017118390A1 (en) * | 2017-08-11 | 2019-02-14 | Saurer Spinning Solutions Gmbh & Co. Kg | Open-end spinning device |
| CN109355751B (en) * | 2018-09-28 | 2020-07-10 | 绍兴文理学院 | Processing method of high-strength wear-resistant air-jet vortex spun yarn based on contact hot roller |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3636182C2 (en) * | 1986-10-24 | 1995-10-12 | Schlafhorst & Co W | Spinning unit of an OE rotor spinning machine |
| DE3704460C2 (en) * | 1987-02-13 | 1993-11-18 | Fritz Stahlecker | Device for OE rotor spinning |
| JPH07122172B2 (en) * | 1987-07-31 | 1995-12-25 | 株式会社豊田中央研究所 | Spinning unit for open-end spinning machine |
| SK137793A3 (en) * | 1992-07-01 | 1994-09-07 | Rieter Ingolstadt Spinnerei | Process and device for open-end spinning |
| DE4334485A1 (en) * | 1993-10-09 | 1995-04-13 | Schlafhorst & Co W | Open-end spinning device |
| US5749216A (en) * | 1997-03-14 | 1998-05-12 | Spindelfabrik Suessen, Schurr, Stahlecker & Grill Gmbh | Open end spinning apparatus |
| DE19729192A1 (en) * | 1997-07-09 | 1999-01-14 | Schlafhorst & Co W | Open end spinner channel plate adaptor for thread |
| DE10160067A1 (en) * | 2001-12-06 | 2003-06-18 | Schlafhorst & Co W | Method and device for spinning textile staple fibers using a spinning rotor |
-
2003
- 2003-08-29 DE DE10339875A patent/DE10339875A1/en not_active Withdrawn
-
2004
- 2004-06-09 EP EP04739736A patent/EP1660708B1/en not_active Expired - Lifetime
- 2004-06-09 CN CNB2004800248514A patent/CN100469959C/en not_active Expired - Lifetime
- 2004-06-09 WO PCT/EP2004/006228 patent/WO2005031050A1/en active Application Filing
- 2004-06-09 US US10/567,994 patent/US7181901B2/en not_active Expired - Lifetime
- 2004-06-09 DE DE502004011586T patent/DE502004011586D1/en not_active Expired - Lifetime
- 2004-06-09 BR BRPI0413806-6A patent/BRPI0413806B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| US7181901B2 (en) | 2007-02-27 |
| CN1846021A (en) | 2006-10-11 |
| US20060225401A1 (en) | 2006-10-12 |
| DE10339875A1 (en) | 2005-03-24 |
| CN100469959C (en) | 2009-03-18 |
| DE502004011586D1 (en) | 2010-10-07 |
| BRPI0413806A (en) | 2006-10-17 |
| EP1660708A1 (en) | 2006-05-31 |
| BRPI0413806B1 (en) | 2014-09-23 |
| WO2005031050A1 (en) | 2005-04-07 |
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