EP1929078B1 - Thread take-off roller for a textile machine which produces crosswound bobbins - Google Patents

Thread take-off roller for a textile machine which produces crosswound bobbins Download PDF

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Publication number
EP1929078B1
EP1929078B1 EP06791536.3A EP06791536A EP1929078B1 EP 1929078 B1 EP1929078 B1 EP 1929078B1 EP 06791536 A EP06791536 A EP 06791536A EP 1929078 B1 EP1929078 B1 EP 1929078B1
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EP
European Patent Office
Prior art keywords
thread
thread take
roller
metal ring
walled
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 - Fee Related
Application number
EP06791536.3A
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German (de)
French (fr)
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EP1929078A1 (en
Inventor
Friedhelm Mistler
Maximilian Preutenborbeck
Jürgen Meyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Spinning Solutions GmbH and Co KG
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Saurer Germany GmbH and Co KG
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Publication of EP1929078A1 publication Critical patent/EP1929078A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/10—Rotors
    • 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
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/06—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate singly
    • 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
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B65H51/10—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips
    • 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

Definitions

  • the invention relates to a thread take-off roller for a cheese-producing textile machine according to the preamble of claim 1.
  • Textile machines producing cross-wound bobbins in particular open-end spinning devices, have thread removal devices in the region of their work stations, which extract the thread produced in a spinning device from the spinning device and convey it in the direction of a winding device where the thread is wound into a cross-wound bobbin.
  • the known thread withdrawal devices have either, as in the DE 44 32 240 A1 described over a machine-length drive shaft or the thread take-off devices are driven by a single motor.
  • Such a thread withdrawal device is for example the subject of DE 101 39 075 A1 ,
  • the thread withdrawal devices according to DE 44 32 240 A1 each consist of a relatively thick-walled, hardened and chrome-plated trigger sleeve, which is rotationally fixed in the field of jobs on the machine-length drive shaft and a pivotally mounted, rubber-tyred pressure roller, which is taken from the trigger sleeve over frictional engagement.
  • these known thread withdrawal devices have the disadvantage that they are suitable due to the continuous drive shaft only for removing the thread during regular spinning operation, but not for a return of the thread end in the spinning device in connection with the piecing process.
  • Thread withdrawal devices with a single-motor driven thread take-off roller are, for example, in DE 101 39 075 A1 described. These known thread withdrawal devices each have a relatively large, single motor driven thread take-off roller and a much smaller, pivotally mounted pinch roller.
  • the thread take-off roll which can be reversibly driven by a stepping motor, consists of a rotationally symmetrical die-cast or injection-molded body, the outer circumference of which is processed in a thread-smooth manner and is preferably chrome-plated.
  • a disadvantage of these known thread take-off devices are, above all, the production costs of the thread take-off rollers. That is, the necessary, relatively complex processing of the coming into contact with the thread surface makes such thread withdrawal rollers relatively expensive.
  • the DE 198 41 666 A1 discloses a thread withdrawal roller according to the preamble of claim 1.
  • the present invention seeks to develop a thread take-off roll with smooth-running surface, which is inexpensive to produce.
  • a thin-walled, made of an abrasion-resistant material metal ring is provided in a cost-effective manner first by means of high-pressure internal deformation with a profiling and then set on the outer periphery of a rotationally symmetrical body of the thread take-off roll.
  • the profiling of the thin-walled metal ring created by high pressure internal deformation is immediately smooth as a thread without any subsequent treatment.
  • High-pressure internal deformation is a production method known per se in connection with hollow bodies, which enables a relatively cost-effective, reproducible production of even complicated components.
  • a hollow body made of a cold-formable metal is inserted into the mold cavity of a die and then pressed by pressure fluid which is injected at high pressure to the Gesenkwandung.
  • the Gesenkwandung has in accordance with the desired profiling of the tube elaborations, in which the material of the tube is pressed during the forming process to form uniform, smooth radii.
  • the high-pressure internal deformation thus represents a process which makes it possible to produce hollow bodies precisely and inexpensively.
  • the material for the metal ring has, as set forth in claim 2, steel, preferably an alloy of a so-called stainless steel proven.
  • metal rings are not only very resistant to corrosion, but also relatively abrasion resistant, so that the wear of the profiling holds within reasonable limits.
  • these metal rings are not only largely insensitive to rust, but in such metal rings, the profiling has a long life.
  • the wall thickness of the thin-walled metal ring is between 0.1 mm and 0.4 mm, preferably 0.2 mm.
  • Hollow body with such a relatively small wall thickness can be edited relatively easily on the one hand by Hochlichinnenverformung, but on the other hand have their profile and when they are mounted on their support body, for example, the main body of the thread take-off roll, the required rigidity.
  • the profiling of the metal ring preferably consists of a plurality of spaced apart in the direction of rotation webs. About the webs takes a relatively gentle entrainment of the thread in its withdrawal from the spinning device. Due to the profiling of the metal ring, the slip between the thread take-off roll and the thread is kept within narrow limits both during the uniform operation and during the acceleration phases of the winding device.
  • the high-pressure internally deformed metal ring is coated. By such a coating, the life of the metal ring can be extended.
  • FIG. 1 shows a perspective view of a job of an open-end rotor spinning machine.
  • the job is characterized in total with the reference number 1.
  • Such jobs 1 have, as known and therefore shown only schematically, essentially an open-end spinning device 2 for producing a thread 9 and a winding device 3, which makes it possible to wind the thread 9 to form a cheese 8.
  • the thread 9 produced in the open-end spinning device 2 is withdrawn from the open-end spinning device 2 by a thread withdrawal device 27 which has a drivable thread withdrawal roller 10 and a pinch roller 14 that can be pivoted to the thread withdrawal roller 10.
  • the thread 9 leaves the open-end spinning device 2 through a so-called thread withdrawal tube 21st In the area of the open-end spinning device 2 also a pivotally mounted Anspinhtosorgan 16 is arranged, which takes over after a yarn break the retrieved by a suction nozzle 4 of the cheese 8 thread 9 and prepares the yarn end for piecing.
  • a thread monitor 26 a paraffining device 62 and thread storage devices 60 and 61 are arranged in the direction of yarn travel behind the thread take-off device 27.
  • the yarn storage device 61 is designed as a vacuum-pressurized storage nozzle, while the storage device 60 is designed as a mechanical yarn storage. That is, between two stationary Fadenleitorganen an adjustable Fadenleitorgan is arranged, which, acted upon by a stepping motor 58, is arranged to be movable relative to the yarn path.
  • the winding device 3 consists, as usual, from a bobbin frame 22 for rotatably supporting a cross-wound bobbin 8, a preferably driven by a reversible single drive 56 drive drum 23 and a Fadenchangier Nur 24, which is driven for example via a stepping motor 57.
  • a thread-centering device in the form of a pivotally mounted centering plate 17 can also be arranged, which can be folded in the regular yarn path when required by a drive 55.
  • the workstation 1 has a suction nozzle 4, which is adjustable by means of a stepping motor 6 between a thread receiving position lying in the region of the winding device 3 and a yarn transfer position lying in the region of the spinning device 2.
  • the individual stepper motors are, as indicated, connected via control lines to a winding station computer 25.
  • the thread withdrawal device 27 which in the FIGS. 2 and 3 consists essentially of one, by a stepper motor 13 driven Fadenabzugsrolle 10 and from a to the thread withdrawal roller 10 can be swiveled pinch roller 14.
  • the thread take-off device 27 provides both for the removal of the spun yarn. 9 from the open-end spinning device 2 during the regular spinning operation, as well as the Wiederanspinnen for the return of a prepared thread 9 in the open-end spinning device. 2
  • the thread take-off roll 10 consists in detail of a rotationally symmetrical, for example, die-cast base body 15, on the outer circumference 7 a thin-walled, profiled by high-pressure internal deformation metal ring 11, which preferably consists of steel or a stainless steel alloy is fixed.
  • the thin-walled, profiled metal ring 11 is in contact with the thread 9 during the winding operation and, in conjunction with the adjacent pressure roller 14, ensures that thread 9 is continuously withdrawn from the open-end spinning device 2.
  • the profiling of the thin-walled metal rings 11 preferably consists, as in the FIGS. 2 and 3 indicated, distributed over the entire circumference of the metal ring 11 webs 12, spaced apart in the direction of rotation R of the drive roller to each other.
  • the thin-walled metal ring 11 receives its profiling advantageously by high-pressure internal deformation.
  • a cold ausformbarem existing metal hollow body is placed in a die, in which, according to the desired profiling, recesses are incorporated.
  • an incompressible medium preferably a pressure fluid which is pressed with very high pressure into the interior of the hollow body
  • the thin-walled tube is pressed into the existing on the inner wall of the die recesses. That is, the formation of the inner wall of the die gives the final shape of the component to be created both in terms of its dimensions or its exact physical configuration before.

Description

Die Erfindung betrifft eine Fadenabzugsrolle für eine Kreuzspulen herstellende Textilmaschine gemäß dem Oberbegriff des Anspruches 1.The invention relates to a thread take-off roller for a cheese-producing textile machine according to the preamble of claim 1.

Kreuzspulen herstellende Textilmaschinen, insbesondere Offenend-Spinnvorrichtungen, weisen im Bereich ihrer Arbeitsstellen Fadenabzugseinrichtungen auf, die den in einer Spinnvorrichtung hergestellten Faden aus der Spinnvorrichtung herausziehen und in Richtung einer Spuleinrichtung fördern, wo der Faden zu einer Kreuzspule aufgewickelt wird.Textile machines producing cross-wound bobbins, in particular open-end spinning devices, have thread removal devices in the region of their work stations, which extract the thread produced in a spinning device from the spinning device and convey it in the direction of a winding device where the thread is wound into a cross-wound bobbin.

Die bekannten Fadenabzugseinrichtungen verfügen dabei entweder, wie beispielsweise in der DE 44 32 240 A1 beschrieben, über eine maschinenlange Antriebswelle oder die Fadenabzugseinrichtungen sind einzelmotorisch angetrieben.
Ein solche Fadenabzugseinrichtung ist beispielsweise Gegenstand der DE 101 39 075 A1 .The known thread withdrawal devices have either, as in the DE 44 32 240 A1 described over a machine-length drive shaft or the thread take-off devices are driven by a single motor.
Such a thread withdrawal device is for example the subject of DE 101 39 075 A1 ,

Die Fadenabzugseinrichtungen gemäß DE 44 32 240 A1 bestehen jeweils aus einer relativ dickwandigen, gehärteten und verchromten Abzugshülse, die im Bereich der Arbeitsstellen an der maschinenlangen Antriebswelle drehfest fixiert ist sowie einer schwenkbar gelagerten, gummibereiften Andruckrolle, die von der Abzugshülse über Reibschluss mitgenommen wird.
Diese bekannten Fadenabzugseinrichtungen weisen allerdings den Nachteil auf, dass sie aufgrund der durchgehenden Antriebswelle nur zum Abziehen des Fadens während des regulären Spinnbetriebes geeignet sind, nicht aber für eine Rückführung des Fadenendes in die Spinnvorrichtung im Zusammenhang mit dem Anspinnprozess.The thread withdrawal devices according to DE 44 32 240 A1 each consist of a relatively thick-walled, hardened and chrome-plated trigger sleeve, which is rotationally fixed in the field of jobs on the machine-length drive shaft and a pivotally mounted, rubber-tyred pressure roller, which is taken from the trigger sleeve over frictional engagement.
However, these known thread withdrawal devices have the disadvantage that they are suitable due to the continuous drive shaft only for removing the thread during regular spinning operation, but not for a return of the thread end in the spinning device in connection with the piecing process.

Fadenabzugseinrichtungen mit einer einzelmotorisch antreibbaren Fadenabzugsrolle sind zum Beispiel in der DE 101 39 075 A1 beschrieben.
Diese bekannten Fadenabzugseinrichtungen verfügen jeweils über eine relativ große, einzelmotorisch angetriebene Fadenabzugsrolle sowie eine deutlich kleinere, schwenkbar gelagerte Andruckrolle. Die Fadenabzugsrolle, die über einen Schrittmotor reversibel antreibbar ist, besteht dabei aus einem rotationssymmetrischen Druckguss- öder Spritzgusskörper, dessen Außenumfang fadenglatt bearbeitet und vorzugsweise verchromt ist.
Nachteilig bei diesen bekannten Fadenabzugseinrichtungen sind vor allem die Herstellungskosten der Fadenabzugsrollen.
Das heißt, die notwendige, relativ aufwendige Bearbeitung der mit dem Faden in Kontakt kommenden Oberfläche macht solche Fadenabzugsrollen relativ kostspielig.Thread withdrawal devices with a single-motor driven thread take-off roller are, for example, in DE 101 39 075 A1 described.
These known thread withdrawal devices each have a relatively large, single motor driven thread take-off roller and a much smaller, pivotally mounted pinch roller. The thread take-off roll, which can be reversibly driven by a stepping motor, consists of a rotationally symmetrical die-cast or injection-molded body, the outer circumference of which is processed in a thread-smooth manner and is preferably chrome-plated.
A disadvantage of these known thread take-off devices are, above all, the production costs of the thread take-off rollers.
That is, the necessary, relatively complex processing of the coming into contact with the thread surface makes such thread withdrawal rollers relatively expensive.

Die DE 198 41 666 A1 offenbart eine Fadenabzugsrolle gemäß dem Oberbegriff des Anspruchs 1.The DE 198 41 666 A1 discloses a thread withdrawal roller according to the preamble of claim 1.

Ausgehend vom vorgenannten, Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Fadenabzugsrolle mit fadenglatter Oberfläche zu entwickeln, die kostengünstig herstellbar ist.Based on the aforementioned, prior art, the present invention seeks to develop a thread take-off roll with smooth-running surface, which is inexpensive to produce.

Diese Aufgabe wird erfindungsgemäß mit einer Fadenabzugsrolle gelöst, wie sie im Anspruch 1 beschrieben ist.This object is achieved with a thread take-off roller, as described in claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Erfindungsgemäß wird ein dünnwandiger, aus einem abriebfesten Material gefertigter Metallring auf kostengünstige Weise zunächst mittels Hochdruckinnenverformung mit einer Profilierung versehen und anschließend auf dem Außenumfang eines rotationssymmetrischen Grundkörpers der Fadenabzugsrolle festgelegt.According to a thin-walled, made of an abrasion-resistant material metal ring is provided in a cost-effective manner first by means of high-pressure internal deformation with a profiling and then set on the outer periphery of a rotationally symmetrical body of the thread take-off roll.

Die durch Hochdruckinnenverformung erstellte Profilierung des dünnwandigen Metallringes ist dabei ohne jede Nachbehandlung sofort fadenglatt.
Das Hochdruckinnenverformen ist ein im Zusammenhang mit Hohlkörpern an sich bekanntes Fertigungsverfahren, das eine relativ kostengünstige, reproduzierbare Herstellung auch komplizierter Bauteile ermöglicht.
Bei diesem zum Beispiel in der DE 41 03 082 beschriebenen, auch als hydrostatisches Umformen bekannten Verfahren, wird ein Hohlkörper aus einem kaltumformbaren Metall in die Formhöhlung eines Gesenkes eingelegt und anschließend durch Druckflüssigkeit, die mit hohem Druck eingepresst wird, an die Gesenkwandung angedrückt.
Die Gesenkwandung weist dabei entsprechend der gewünschten Profilierung der Rohres Ausarbeitungen auf, in die das Material des Rohres während des Umformprozesses unter Bildung gleichmäßiger, glatter Radien hineingedrückt wird.The profiling of the thin-walled metal ring created by high pressure internal deformation is immediately smooth as a thread without any subsequent treatment.
High-pressure internal deformation is a production method known per se in connection with hollow bodies, which enables a relatively cost-effective, reproducible production of even complicated components.
In this example, in the DE 41 03 082 described, also known as hydrostatic forming method, a hollow body made of a cold-formable metal is inserted into the mold cavity of a die and then pressed by pressure fluid which is injected at high pressure to the Gesenkwandung.
The Gesenkwandung has in accordance with the desired profiling of the tube elaborations, in which the material of the tube is pressed during the forming process to form uniform, smooth radii.

Da der dünnwandige Metallring im Anschluss an den Umformprozess sofort seine endgültige, fadenglatte Profilierung aufweist, können weitere Bearbeitungsschritte entfallen.
Das Hochdruckinnenverformen stellt somit ein Verfahren dar, das es ermöglicht, Hohlkörper präzise und kostengünstig herzustellen.Since the thin-walled metal ring immediately after the forming process has its final, thread-smooth profiling, further processing steps can be omitted.
The high-pressure internal deformation thus represents a process which makes it possible to produce hollow bodies precisely and inexpensively.

Als Material für den Metallring hat sich, wie im Anspruch 2 dargelegt, Stahl, vorzugsweise eine Legierung aus einem so genanntem Edelstahl, bewährt.As the material for the metal ring has, as set forth in claim 2, steel, preferably an alloy of a so-called stainless steel proven.

Aus Edelstahl gefertigte Metallringe sind nicht nur sehr korrosionsbeständig, sondern auch relativ abriebsfest, so dass sich auch die Abnutzung der Profilierung in vertretbaren Grenzen hält.Made of stainless steel, metal rings are not only very resistant to corrosion, but also relatively abrasion resistant, so that the wear of the profiling holds within reasonable limits.

Das heißt, diese Metallringe sind nicht nur weitestgehend unempfindlich gegen Rost, sondern bei solchen Metallringen weist auch die Profilierung eine lange Lebensdauer auf.That is, these metal rings are not only largely insensitive to rust, but in such metal rings, the profiling has a long life.

Wie im Anspruch. 3 dargelegt, beträgt die Wandstärke des dünnwandigen Metallringes, zwischen 0,1 mm und 0,4 mm, vorzugsweise 0,2 mm.
Hohlkörper mit einer solchen, relativ geringen, Wandstärke lassen sich einerseits per Hochdruckinnenverformung relativ problemlos bearbeiten, weisen aber andererseits nach ihrer Profilierung und wenn sie auf ihren Stützkörper, beispielsweise den Grundkörper der Fadenabzugsrolle aufgezogen sind, die erforderliche Steifigkeit auf.As in the claim. 3, the wall thickness of the thin-walled metal ring is between 0.1 mm and 0.4 mm, preferably 0.2 mm.
Hollow body with such a relatively small wall thickness can be edited relatively easily on the one hand by Hochdruckinnenverformung, but on the other hand have their profile and when they are mounted on their support body, for example, the main body of the thread take-off roll, the required rigidity.

Wie im Anspruch 4 beschrieben, besteht die Profilierung des Metallringes vorzugsweise aus einer Vielzahl in Rotationsrichtung beabstandet angeordneten Stegen.
Über die Stege erfolgt dabei eine relativ schonende Mitnahme des Fadens bei dessen Abzug aus der Spinnvorrichtung.
Aufgrund der Profilierung des Metallringes hält sich der Schlupf zwischen Fadenabzugsrolle und Faden sowohl während des gleichförmigen Betriebes als auch in den Beschleunigungsphasen der Spulvorrichtung in engen Grenzen.As described in claim 4, the profiling of the metal ring preferably consists of a plurality of spaced apart in the direction of rotation webs.
About the webs takes a relatively gentle entrainment of the thread in its withdrawal from the spinning device.
Due to the profiling of the metal ring, the slip between the thread take-off roll and the thread is kept within narrow limits both during the uniform operation and during the acceleration phases of the winding device.

Gemäß Anspruch 5 ist in einer alternativen Ausführungsform außerdem vorgesehen, dass der hochdruckinnenverformte Metallring beschichtet ist.
Durch eine solche Beschichtung kann die Lebensdauer des Metallringes verlängert werden.According to claim 5, it is also provided in an alternative embodiment that the high-pressure internally deformed metal ring is coated.
By such a coating, the life of the metal ring can be extended.

Die Erfindung wird nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert.The invention will be explained in more detail with reference to an embodiment shown in the drawings.

Es zeigt:

Fig.1
perspektivisch eine Arbeitsstelle einer Kreuzspulen herstellende Textilmaschine, mit einer einzelmotorisch angetriebenen Fadenabzugseinrichtung sowie einer erfindungsgemäßen Fadenabzugsrolle,
Fig.2
die erfindungsgemäße Fadenabzugsrolle mit angeschlossenem Antrieb in Seitenansicht, teilweise im Schnitt,
Fig.3
die erfindungsgemäße Fadenabzugsrolle gemäß Schnitt III-III der Fig. 2.
It shows:
Fig.1
in perspective a workstation of a cheese-producing textile machine, with a single-motor driven thread withdrawal device and a thread take-off roll according to the invention,
Fig.2
Thread take-off roll according to the invention with attached drive in side view, partly in section,
Figure 3
the thread take-off roll according to the invention according to section III-III of Fig. 2 ,

Die Figur 1 zeigt in perspektivischer Darstellung eine Arbeitsstelle einer Offenend-Rotorspinnmaschine.
Die Arbeitsstelle ist dabei insgesamt mit der Bezugszahl 1 gekennzeichnet.
Derartige Arbeitsstellen 1 verfügen, wie bekannt und daher nur schematisch dargestellt, im Wesentlichen über eine Offenend-Spinnvorrichtung 2 zur Herstellung eines Fadens 9 sowie über eine Spulvorrichtung 3, die es ermöglicht, den Faden 9 zu einer Kreuzspule 8 aufzuwickeln.The FIG. 1 shows a perspective view of a job of an open-end rotor spinning machine.
The job is characterized in total with the reference number 1.
Such jobs 1 have, as known and therefore shown only schematically, essentially an open-end spinning device 2 for producing a thread 9 and a winding device 3, which makes it possible to wind the thread 9 to form a cheese 8.

Der in der Offenend-Spinnvorrichtung 2 hergestellte Faden 9 wird durch eine Fadenabzugseinrichtung 27, die eine antreibbare Fadenabzugsrolle 10 sowie eine an die Fadenabzugsrolle 10 anschwenkbare Andruckrolle 14 aufweist, aus der der Offenend-Spinnvorrichtung 2 abgezogen.The thread 9 produced in the open-end spinning device 2 is withdrawn from the open-end spinning device 2 by a thread withdrawal device 27 which has a drivable thread withdrawal roller 10 and a pinch roller 14 that can be pivoted to the thread withdrawal roller 10.

Der Faden 9 verlässt die der Offenend-Spinnvorrichtung 2 dabei durch ein sogenanntes Fadenabzugsröhrchens 21.
Im Bereich der Offenend-Spinnvorrichtung 2 ist außerdem ein schwenkbar gelagertes Anspinhhilfsorgan 16 angeordnet, das nach einem Fadenbruch den durch eine Saugdüse 4 von der Kreuzspule 8 zurückgeholten Faden 9 übernimmt und das Fadenende zum Wiederanspinnen vorbereitet.The thread 9 leaves the open-end spinning device 2 through a so-called thread withdrawal tube 21st
In the area of the open-end spinning device 2 also a pivotally mounted Anspinhhilfsorgan 16 is arranged, which takes over after a yarn break the retrieved by a suction nozzle 4 of the cheese 8 thread 9 and prepares the yarn end for piecing.

Des weiteren sind in Fadenlaufrichtung hinter der Fadenabzugseinrichtung 27 ein Fadenwächter 26, eine Paraffiniereinrichtung 62 sowie Fadenspeichereinrichtungen 60 beziehungsweise 61 angeordnet.
Die Fadenspeichereinrichtung 61 ist dabei als unterdruckbeaufschlagbare Speicherdüse ausgebildet, während die Speichereinrichtung 60 als mechanischer Fadenspeicher ausgebildet ist.
Das heißt, zwischen zwei stationären Fadenleitorganen ist ein verstellbares Fadenleitorgan angeordnet, das, durch einen Schrittmotor 58 beaufschlagt, relativ zum Fadenlaufweg beweglich angeordnet ist.Furthermore, a thread monitor 26, a paraffining device 62 and thread storage devices 60 and 61 are arranged in the direction of yarn travel behind the thread take-off device 27.
The yarn storage device 61 is designed as a vacuum-pressurized storage nozzle, while the storage device 60 is designed as a mechanical yarn storage.
That is, between two stationary Fadenleitorganen an adjustable Fadenleitorgan is arranged, which, acted upon by a stepping motor 58, is arranged to be movable relative to the yarn path.

Die Spuleinrichtung 3 besteht, wie üblich, aus einem spulenrahmen 22 zum drehbaren Haltern einer Kreuzspule 8, einer vorzugsweise über einen reversierbaren Einzelantrieb 56 angetriebenen Antriebstrommel 23 sowie einer Fadenchangiereinrichtung 24, die beispielsweise über einen Schrittmotor 57 angetrieben wird.
Vor der Fadenchangiereinrichtung 24 kann außerdem eine Fadenzentriereinrichtung in Form eines schwenkbar gelagerten Zentrierbleches 17 angeordnet sein, das im Bedarfsfall durch einen Antrieb 55 definiert in den regulären Fadenlaufweg geklappt werden kann.The winding device 3 consists, as usual, from a bobbin frame 22 for rotatably supporting a cross-wound bobbin 8, a preferably driven by a reversible single drive 56 drive drum 23 and a Fadenchangiereinrichtung 24, which is driven for example via a stepping motor 57.
In front of the thread-changing device 24, a thread-centering device in the form of a pivotally mounted centering plate 17 can also be arranged, which can be folded in the regular yarn path when required by a drive 55.

Des weiteren verfügt die Arbeitsstelle 1, wie vorstehend bereits angedeutet, über eine Saugdüse 4, die mittels eines Schrittmotors 6 definiert zwischen einer im Bereich der Spulvorrichtung 3 liegenden Fadenaufnahmestellung und einer im Bereich der Spinnvorrichtung 2 liegenden Fadenübergabestellung verstellbar ist.Furthermore, the workstation 1, as already indicated above, has a suction nozzle 4, which is adjustable by means of a stepping motor 6 between a thread receiving position lying in the region of the winding device 3 and a yarn transfer position lying in the region of the spinning device 2.

Die einzelnen Schrittmotoren sind, wie angedeutet, über Steuerleitungen an einen Spulstellenrechner 25 angeschlossen.The individual stepper motors are, as indicated, connected via control lines to a winding station computer 25.

Die Fadenabzugseinrichtung 27, die in den Fig. 2 und 3 in Seitenansicht bzw. in Vorderansicht, teilweise im Schnitt, näher darstellt ist, besteht im Wesentlichen aus einer, durch einen Schrittmotor 13 antreibbaren Fadenabzugsrolle 10 sowie aus einer an die Fadenabzugsrolle 10 anschwenkbaren Andruckrolle 14. Die Fadenabzugseinrichtung 27 sorgt sowohl für das Abziehen des Spinnfadens 9 aus der Offenend-Spinnvorrichtung 2 während des regulären Spinnbetriebes, als auch beim Wiederanspinnen für die Rückführung eines vorbereiteten Fadens 9 in die Offenend-Spinnvorrichtung 2.The thread withdrawal device 27, which in the FIGS. 2 and 3 consists essentially of one, by a stepper motor 13 driven Fadenabzugsrolle 10 and from a to the thread withdrawal roller 10 can be swiveled pinch roller 14. The thread take-off device 27 provides both for the removal of the spun yarn. 9 from the open-end spinning device 2 during the regular spinning operation, as well as the Wiederanspinnen for the return of a prepared thread 9 in the open-end spinning device. 2

Die Fadenabzugsrolle 10 besteht im Einzelnen aus einem rotationssymmetrischen, beispielsweise im Druckgussverfahren gefertigten Grundkörper 15, auf dessen Außenumfang 7 ein dünnwandiger, durch Hochdruckinnenverformung profilierter Metallring 11, der vorzugsweise aus Stahl oder einer Edelstahllegierung besteht, festgelegt ist.
Der dünnwandige, profilierte Metallring 11 steht während des Spulbetriebes mit dem Faden 9 in Kontakt und sorgt in Verbindung mit der anliegenden Andruckrolle 14 dafür, dass kontinuierlich Faden 9 aus der Offenend-Spinnvorrichtung 2 abgezogen wird.The thread take-off roll 10 consists in detail of a rotationally symmetrical, for example, die-cast base body 15, on the outer circumference 7 a thin-walled, profiled by high-pressure internal deformation metal ring 11, which preferably consists of steel or a stainless steel alloy is fixed.
The thin-walled, profiled metal ring 11 is in contact with the thread 9 during the winding operation and, in conjunction with the adjacent pressure roller 14, ensures that thread 9 is continuously withdrawn from the open-end spinning device 2.

Die Profilierung des dünnwandigen Metallringe 11 besteht dabei vorzugsweise, wie in den Figuren 2 und 3 angedeutet, aus über den gesamten Umfang des Metallringes 11 verteilten Stegen 12, in Rotationsrichtung R der Antriebswalze beabstandet zueinander angeordnet sind.The profiling of the thin-walled metal rings 11 preferably consists, as in the FIGS. 2 and 3 indicated, distributed over the entire circumference of the metal ring 11 webs 12, spaced apart in the direction of rotation R of the drive roller to each other.

Wie vorstehend bereits erläutert, erhält der dünnwandige Metallring 11 seine Profilierung vorteilhafter Weise durch Hochdruckinnenverformen.
Bei diesem an sich bekannten und beispielsweise in der
DE 41 03 082 A1 beschriebenen Verfahren, das auch als hydrostatisches Umformen bezeichnet wird, wird ein aus kaltumformbarem Metall bestehender Hohlkörper in ein Gesenk eingelegt, in das, entsprechend der gewünschten Profilierung, Ausnehmungen eingearbeitet sind.
Durch ein inkompressibles Medium, vorzugsweise eine Druckflüssigkeit, die mit sehr hohem Druck in das Innere des Hohlkörpers eingepresst wird, wird das dünnwandige Rohr in die an der Innenwandung des Gesenkes vorhandenen Ausnehmungen gedrückt.
Das heißt, die Ausbildung des Innenwandung des Gesenkes gibt die endgültige Form des zu erstellten Bauteils sowohl was dessen Abmessungen oder dessen exakte körperliche Ausgestaltung betrifft, vor.As already explained above, the thin-walled metal ring 11 receives its profiling advantageously by high-pressure internal deformation.
In this known and, for example, in the
DE 41 03 082 A1 described method, which is also referred to as hydrostatic forming, a cold ausformbarem existing metal hollow body is placed in a die, in which, according to the desired profiling, recesses are incorporated.
By an incompressible medium, preferably a pressure fluid which is pressed with very high pressure into the interior of the hollow body, the thin-walled tube is pressed into the existing on the inner wall of the die recesses.
That is, the formation of the inner wall of the die gives the final shape of the component to be created both in terms of its dimensions or its exact physical configuration before.

Da im Bereich der Biegekanten jeweils relativ glatte Radien entstehen, weisen die gefertigten Bauteile bereits ihr Endfinish auf, das heißt, weitere Nachbehandlungen, wie zum Beispiel entgraten, sind nicht notwendig.Since in the area of the bending edges each relatively smooth radii arise, the finished components already have their final finish, that is, further post-treatments, such as deburring, are not necessary.

Durch Hochdruckinnenverformung lassen sich deshalb auch relativ komplizierte Serienbauteile verhältnismäßig kostengünstig und sehr passgenau fertigen.By Hochdruckinnenverformung therefore relatively complicated serial components can be manufactured relatively inexpensively and very accurately.

Claims (5)

  1. Thread take-off roller for a textile machine producing cross-wound bobbins for the frictional transport of a thread produced in a spinning device, the outer periphery (7) of the thread take-off roller (10) being formed by a thin-walled metal ring (11), characterised in that the metal ring (11) is profiled by internal high pressure forming.
  2. Thread take-off roller according to claim 1, characterised in that the thin-walled, profiled metal ring (11) is made of steel, preferably a rustproof stainless steel alloy.
  3. Thread take-off roller according to claim 1, characterised in that the thin-walled, profiled metal ring (11) has a wall thickness of between 0.1 mm and 0.4 mm, preferably 0.2 mm.
  4. Thread take-off roller according to one of the preceding claims, characterised in that the thin-walled, profiled metal ring (11) has a profiling which is stepped in the direction (R) of rotation of the thread take-off roller (10), for example in the form of webs (12).
  5. Thread take-off roller according to claim 1, characterised in that the thin-walled, profiled metal ring (11) is coated.
EP06791536.3A 2005-09-24 2006-07-12 Thread take-off roller for a textile machine which produces crosswound bobbins Expired - Fee Related EP1929078B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510045712 DE102005045712A1 (en) 2005-09-24 2005-09-24 Thread take-off roller for a textile machine producing cross-wound bobbins
PCT/EP2006/006793 WO2007033713A1 (en) 2005-09-24 2006-07-12 Thread take-off roller for a textile machine which produces crosswound bobbins

Publications (2)

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EP1929078A1 EP1929078A1 (en) 2008-06-11
EP1929078B1 true EP1929078B1 (en) 2014-12-24

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EP06791536.3A Expired - Fee Related EP1929078B1 (en) 2005-09-24 2006-07-12 Thread take-off roller for a textile machine which produces crosswound bobbins

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EP (1) EP1929078B1 (en)
CN (1) CN101273162B (en)
DE (1) DE102005045712A1 (en)
WO (1) WO2007033713A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007015695A1 (en) * 2007-03-31 2008-10-02 Oerlikon Textile Gmbh & Co. Kg Method for operating a cheese-producing textile machine
DE102007023490A1 (en) 2007-05-19 2008-11-20 Oerlikon Textile Gmbh & Co. Kg Method and device for operating a winding device of a cross-wound producing textile machine
DE102008040951A1 (en) * 2008-08-01 2010-02-04 Rieter Ingolstadt Gmbh Outfeed roller for drawing finespun thread from spinning device of open-end spinning machine, is constantly propelled in thread departure direction, and upper surface of outfeed roller has friction increasing plasma coating in thread

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1247952A (en) * 1959-09-11 1960-12-09 Anti-static gasket including pressure cylinder for drawing fibers, textile or other material
DE2438375A1 (en) * 1974-08-09 1976-02-19 Schubert & Salzer Maschinen Spinning machine feed rollers - formed by end flanges between which are fitted parallel spring steel wires
DE2616884A1 (en) * 1976-04-15 1977-10-27 Schubert & Salzer Maschinen PAIR OF THREAD PULL-OFF ROLLERS
DE3704745A1 (en) * 1986-02-20 1987-09-24 Barmag Barmer Maschf Thread delivery unit with pressure roller and flexible counterroller
DE4103082A1 (en) 1991-02-01 1992-08-27 Eichelberg & Co Gmbh H D METHOD FOR THE HYDROSTATIC FORMING OF HOLLOW BODIES FROM COLD FORMABLE METAL AND DEVICE FOR IMPLEMENTING THE METHOD
DE19652620A1 (en) * 1995-12-20 1997-06-26 Barmag Barmer Maschf Light compact, inexpensive false-twist texturiser for synthetic yarns
DE19841666A1 (en) * 1998-09-11 2000-03-16 Schaeffler Waelzlager Ohg Driven yarn delivery roller for use with a nip roller comprises a cast hub with a drawn axial extension as yarn contact surface
DE10139075A1 (en) 2001-08-09 2003-02-20 Schlafhorst & Co W Open-end rotor spinning machine
CN2622209Y (en) * 2003-05-23 2004-06-30 无锡二橡胶股份有限公司 Top rollers made of metal and covered with rubber for spinning use

Also Published As

Publication number Publication date
CN101273162A (en) 2008-09-24
EP1929078A1 (en) 2008-06-11
CN101273162B (en) 2011-11-09
DE102005045712A1 (en) 2007-03-29
WO2007033713A1 (en) 2007-03-29

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