EP1979257A1 - Method for spooling a thread on a textile machine which produces crosswound bobbins, and textile machine which produces crosswound bobbins - Google Patents

Method for spooling a thread on a textile machine which produces crosswound bobbins, and textile machine which produces crosswound bobbins

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Publication number
EP1979257A1
EP1979257A1 EP06829641A EP06829641A EP1979257A1 EP 1979257 A1 EP1979257 A1 EP 1979257A1 EP 06829641 A EP06829641 A EP 06829641A EP 06829641 A EP06829641 A EP 06829641A EP 1979257 A1 EP1979257 A1 EP 1979257A1
Authority
EP
European Patent Office
Prior art keywords
thread
textile machine
interruption
winding
fadenchangiereinrichtung
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.)
Granted
Application number
EP06829641A
Other languages
German (de)
French (fr)
Other versions
EP1979257B1 (en
Inventor
Manfred Lassmann
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Oerlikon Textile GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oerlikon Textile GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Publication of EP1979257A1 publication Critical patent/EP1979257A1/en
Application granted granted Critical
Publication of EP1979257B1 publication Critical patent/EP1979257B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/205—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage by means of a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2884—Microprocessor-controlled traversing devices in so far the control is not special to one of the traversing devices of groups B65H54/2803 - B65H54/325 or group B65H54/38
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/32—Traversing devices; Package-shaping arrangements with thread guides reciprocating or oscillating with variable stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
    • B65H54/388—Preventing the yarn from falling off the edge of the package
    • 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 present invention relates to a method for winding a thread on a textile machine producing cross-wound bobbins according to the preamble of claim 1 and to a textile machine producing cross-wound bobbins according to the preamble of claim 4.
  • a cross-wound producing textile machine which has a plurality of jobs.
  • a thread is produced by means of an open-end spinning device, which thread is laid on a cross-wound bobbin by a single-motor-driven thread-changing device.
  • a rematching process is initiated to remedy it.
  • Continuing the laying of the thread on the cheese causes a temporary occurrence of overlength of the thread. This is due to the different acceleration speeds of the individual motor driven components of the workstations.
  • the thread temporarily stored in the thread storage device to compensate for the excess thread length occurring after re-spinning is of a smaller value than normal operation of the textile machine Having winding tension.
  • the lower winding tension of the thread is due to the fact that the winding tension is generated during this phase only by the pending in the pneumatic yarn storage vacuum, with the result that when emptying the yarn storage device, the thread is wound in loose layers on the cheese to be produced.
  • These loose thread layers lead to tees on the coil sides, which leads to lasting drainage problems of the thread in the further processing of the cheeses.
  • the object of the present invention is to provide a method by which the laying of the yarn temporarily resulting from the yarn excess length is improved with a low winding tension in order to avoid losses of the yarn and the provision of a textile machine for carrying out the process.
  • the Nennhub the Fadenchangier drove the work is shortened after the elimination of the thread interruption for the duration of winding a defined thread length on the cheese.
  • the Fadenchangier By shortening the Nennhubes the Fadenchangier adopted a smaller laying width of the thread is achieved on the cheese, so that in the lower winding tension Wound yarn the occurrence of tees on the cheeses is largely avoided.
  • the ceremoniesspulende defined thread length should be set so that they are achieved at the earliest with the complete emptying of the storage device and the achievement of the normal operation of the textile machine corresponding speeds of the drives. This ensures the achievement of a stable state of the winding tension for the transition to the normal operation of the textile machine.
  • additional thread length can be wound to ensure that after emptying the thread storage device and the startup of all drives the job, which were restarted to carry out the process of repairing the interruption of the thread, for switching a stable and slightly increased winding tension is given by the reduced stroke on the nominal stroke of Fadenchangier pain.
  • the Nennhub the Fadenchangier worn by about 5 mm to 40 mm, in particular by 10 mm to 30 mm, are shortened.
  • the magnitude of the shortening of the stroke depends essentially on the ratio which exists between the ramp-up times of the drives of the components of the job, in particular between the thread take-off roller and the winding shaft.
  • the ramp-up time of the drive shaft driving the turn turn be significantly dependent on the diameter of the cheese at the time the thread interruption, while the ramp-up time of the drive of the thread take-off roller can be regarded as almost constant.
  • each workstation comprises a control device which reduces the shortening of the Nennhubes the Fadenchangier worn after the elimination of the thread interruption for the duration of winding a defined thread length controls the cross-wound bobbin.
  • control device can reduce the nominal stroke of the thread switching device for the duration of at least the emptying of the thread storage device.
  • the textile machine may comprise a device for determining the length of the thread wound up with a shortened stroke.
  • the thread length on the speed or the step increments of the drive of the winding shaft whose speed or step increments is monitored by the control device, as well as from the respective current diameter of the cheese to be produced are derived.
  • Figure 1 shows a perspective view of a job 1 an open-end rotor spinning machine, which, as known and therefore shown only schematically, via an open-end spinning device 2 for producing a thread 9 and a downstream in the direction of thread F
  • Winding device 3 has. On this winding device 3, the thread 9 is wound into a package 8.
  • the thread 9 produced in the open-end spinning device 2 is, as indicated, by a thread withdrawal device 27, the one driven by a single motor thread take-off roller 10 and an engageable with the thread take-off roll 10, from this frictionally entrained pressure roller 14, withdrawn from the open-end spinning device 2.
  • the yarn 9 leaves the open-end spinning device 2 through a so-called yarn withdrawal tube 21, in the region of which a pivotally mounted piecing aid 16 is arranged, which after a yarn break is interrupted by a suction nozzle 4 from the cross-wound bobbin 8 retrieved thread 9 takes over and prepares the thread end for thread connection.
  • a thread monitor 26, a mechanical thread storage device 7, a pneumatic thread storage device 12 and a waxing device 5 are arranged in the area of the thread running path.
  • the pneumatic thread storage device 12 is formed as a discontinuous working memory, that is, the thread storage device 12 is completely emptied after each thread connecting operation.
  • the yarn storage device 12 is acted upon by a vacuum source, not shown, with suction air.
  • the winding device 3 consists, as usual, from a creel 22 for rotatably supporting a cross-wound bobbin 8, a preferably via a reversible single drive 19 driven winding shaft 23 and a Fadenchangier rally 24, which is driven for example via a stepping motor 20.
  • Such work stations 1 have, as already mentioned, a suction nozzle 4 which, by means of a stepping motor 6, is defined between a thread take-up position lying in the region of the winding device 3 and one in the region of Spinning device 2 lying thread transfer position is adjustable.
  • the individual stepper motors of the components of the workstation 1 are connected via various control lines to a control device, in the present exemplary embodiment to a workstations computer 25.
  • a control device in the present exemplary embodiment to a workstations computer 25.
  • the individual motor drives of the components of the workstations 1 are independently controllable.
  • the control device may be designed as a central computer of the textile machine.
  • the commissioning of the thread take-off roller 10, the Fadenchangier worn 24 and the winding shaft 23 is carried out taking into account temporally coordinated acceleration processes of the individual drives, which should take into account in particular the different moments of inertia and the traction of the operating components to be taken into account.
  • the excess length of the thread 9 produced by the open-end spinning device 2, which are not wound by the cross-wound bobbin 8 due to the slow speed of the winding shaft 23 can, initially be cached, which is realized via the thread storage device 12.
  • the problem occurring here is the reduced winding tension, which is present during the emptying of the thread storage device 12 after the yarn joining operation, since the winding tension of the thread 9 is generated during this period only by the upcoming in the thread storage device 12 negative pressure.
  • the nominal stroke of the thread switching device 24 is shortened, at least for the duration of the complete emptying of the thread storage device 12.
  • deductions at the coil edges due to the lower winding tension of the thread to be laid 9 can be largely avoided.
  • beyond the defined thread length beyond additional thread length can be wound to ensure that after emptying the thread storage device 12 and the startup of all drives the job 1, which were restarted to carry out the process of repairing the interruption of the thread for the Switching from the reduced stroke to the nominal stroke of the thread-switching device a stable and slightly increased winding tension is given.
  • the length of additionally wound with shortened nominal stroke thread 9 is between 1 and 10 m.
  • the shortening of the nominal stroke can be between 5 and 40 mm, in particular between 10 mm and 30 mm.

Abstract

Method for spooling a thread (9) on a textile machine which produces crosswound bobbins (8) and has a multiplicity of work stations (1) of the same kind, wherein each work station (1) comprises a thread traversing device (24) for laying the thread (9) during the normal operation of the textile machine with a nominal stroke on a crosswound bobbin (8) which is driven by a winding shaft (23), and an apparatus (2) for eliminating the interruption of the thread (9), wherein, after the thread interruption has been eliminated, first of all a defined thread length is stored in a thread storage device (12), wherein the nominal stroke of the thread traversing device (24) of the work station (1) is shortened after the elimination of the thread interruption for the duration of spooling of a defined thread length onto the crosswound bobbin (8).

Description

Beschreibung :Description :
Verfahren zum Aufspulen eines Fadens an einer Kreuzspulen herstellenden Textilmaschine sowie Kreuzspulen herstellende TextilmaschineA method for winding a thread on a textile machine producing cross-wound bobbins and textile machines producing cross-wound bobbins
Die vorliegende Erfindung betrifft ein Verfahren zum Aufspulen eines Fadens auf an einer Kreuzspulen herstellenden Textilmaschine gemäß dem Oberbegriff des Anspruches 1 sowie eine Kreuzspulen herstellende Textilmaschine gemäß dem Oberbegriff des Anspruches 4.The present invention relates to a method for winding a thread on a textile machine producing cross-wound bobbins according to the preamble of claim 1 and to a textile machine producing cross-wound bobbins according to the preamble of claim 4.
Aus der DE 103 52 819 Al ist eine Kreuzspulen herstellende Textilmaschine bekannt, die eine Vielzahl von Arbeitsstellen aufweist. An den Arbeitstellen wird mittels einer Offenend- Spinnvorrichtung ein Faden hergestellt, der durch eine einzelmotorisch angetriebene Fadenchangiereinrichtung auf einer Kreuzspule verlegt wird. Bei einem Auftreten einer Unterbrechung des Fadens wird zu ihrer Behebung ein Wiederanspinnprozess eingeleitet. Bei der Fortsetzung der Verlegung des Fadens auf der Kreuzspule kommt es zu einem temporären Auftreten von Überlängen des Fadens. Dies beruht auf den unterschiedlichen Hochlaufgeschwindigkeiten der einzelmotorisch angetriebenen Komponenten der Arbeitsstellen. So führt das Nacheilen einer dem Antrieb der Kreuzspule dienenden Wickelwelle gegenüber einer dem Fadenabzug aus der Spinnvorrichtung dienenden Fadenabzugswalze zu einer Überlänge des Fadens, die durch eine temporäre Zwischenspeicherung in einer Fadenspeichereinrichtung kompensiert wird.From DE 103 52 819 Al a cross-wound producing textile machine is known which has a plurality of jobs. At the work stations, a thread is produced by means of an open-end spinning device, which thread is laid on a cross-wound bobbin by a single-motor-driven thread-changing device. Upon the occurrence of an interruption of the thread, a rematching process is initiated to remedy it. Continuing the laying of the thread on the cheese causes a temporary occurrence of overlength of the thread. This is due to the different acceleration speeds of the individual motor driven components of the workstations. Thus, the lagging of a winding shaft serving to drive the cross-wound bobbin with respect to a yarn take-off roll serving for the yarn withdrawal from the spinning device leads to an excess length of the yarn, which is compensated by a temporary intermediate storage in a yarn storage device.
Als nachteilig erweist sich, dass der zur Kompensation der auftretenden Fadenüberlänge nach dem Wiederanspinnen in der Fadenspeichereinrichtung temporär zwischengespeicherte Faden eine vom Normalbetrieb der Textilmaschine abweichende geringere Wickelspannung aufweist. Die geringere Wickelspannung des Fadens ist darauf zurückzuführen, dass die Wickelspannung während dieser Phase nur durch den in der pneumatischen Fadenspeichereinrichtung anstehenden Unterdruck erzeugt wird, was zur Folge hat, dass bei der Entleerung der Fadenspeichereinrichtung der Faden in lockeren Lagen auf der herzustellenden Kreuzspule aufgewickelt wird. Diese lockeren Fadenlagen führen zu Abschlägen an den Spulenflanken, was zu nachhaltigen Ablaufproblemen des Fadens bei der Weiterverarbeitung der Kreuzspulen führt.It proves to be disadvantageous that the thread temporarily stored in the thread storage device to compensate for the excess thread length occurring after re-spinning is of a smaller value than normal operation of the textile machine Having winding tension. The lower winding tension of the thread is due to the fact that the winding tension is generated during this phase only by the pending in the pneumatic yarn storage vacuum, with the result that when emptying the yarn storage device, the thread is wound in loose layers on the cheese to be produced. These loose thread layers lead to tees on the coil sides, which leads to lasting drainage problems of the thread in the further processing of the cheeses.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren bereitzustellen, durch welches die Verlegung des temporär aus der Fadenüberlänge resultierenden Fadens mit geringer Wickelspannung verbessert wird, um Abschläge des Fadens zu vermeiden sowie die Bereitstellung einer Textilmaschine zur Durchführung des Verfahrens.The object of the present invention is to provide a method by which the laying of the yarn temporarily resulting from the yarn excess length is improved with a low winding tension in order to avoid losses of the yarn and the provision of a textile machine for carrying out the process.
Diese Aufgabe wird hinsichtlich des Verfahrens durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Hinsichtlich der Textilmaschine wird diese Aufgabe durch die kennzeichnenden Merkmale des Anspruches 4 gelöst.This object is achieved with regard to the method by the characterizing features of claim 1. With regard to the textile machine, this object is achieved by the characterizing features of claim 4.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche .Advantageous embodiments of the invention are the subject of the dependent claims.
Gemäß Anspruch 1 ist vorgesehen, dass der Nennhub der Fadenchangiereinrichtung der Arbeitstelle nach der erfolgten Behebung der Fadenunterbrechung für die Dauer der Aufspulung einer definierten Fadenlänge auf die Kreuzspule verkürzt wird. Durch die Verkürzung des Nennhubes der Fadenchangiereinrichtung wird eine geringere Verlegebreite des Fadens auf der Kreuzspule erreicht, so dass bei dem mit der geringeren Wickelspannung aufgespulten Faden das Auftreten von Abschlägen an den Kreuzspulenflanken weitgehend vermieden wird.According to claim 1 it is provided that the Nennhub the Fadenchangiereinrichtung the work is shortened after the elimination of the thread interruption for the duration of winding a defined thread length on the cheese. By shortening the Nennhubes the Fadenchangiereinrichtung a smaller laying width of the thread is achieved on the cheese, so that in the lower winding tension Wound yarn the occurrence of tees on the cheeses is largely avoided.
Vorzugsweise sollte die aufzuspulende definierte Fadenlänge so festgelegt werden, dass sie frühestens mit der vollständigen Entleerung der Speichervorrichtung und dem Erreichen der dem normalen Betrieb der Textilmaschine entsprechenden Geschwindigkeiten der Antriebe erreicht werden. Dadurch wird das Erreichen eines stabilen Zustands der Wickelspannung für den Übergang in den normalen Betrieb der Textilmaschine gewährleistet.Preferably, the aufzuspulende defined thread length should be set so that they are achieved at the earliest with the complete emptying of the storage device and the achievement of the normal operation of the textile machine corresponding speeds of the drives. This ensures the achievement of a stable state of the winding tension for the transition to the normal operation of the textile machine.
Des Weiteren kann eine über die definierte Fadenlänge hinausgehende zusätzliche Fadenlänge aufgewickelt werden, um zu gewährleisten, dass nach dem Leeren der Fadenspeichereinrichtung und dem Hochlaufen aller Antriebe der Arbeitsstelle, die zur Durchführung des Vorganges der Behebung der Unterbrechung des Fadens neu gestartet wurden, für die Umschaltung von dem reduzierten Hub auf den Nennhub der Fadenchangiereinrichtung eine stabile und leicht erhöhte Wickelspannung gegeben ist.Furthermore, beyond the defined thread length additional thread length can be wound to ensure that after emptying the thread storage device and the startup of all drives the job, which were restarted to carry out the process of repairing the interruption of the thread, for switching a stable and slightly increased winding tension is given by the reduced stroke on the nominal stroke of Fadenchangiereinrichtung.
Insbesondere kann der Nennhub der Fadenchangiereinrichtung um cirka 5 mm bis 40 mm, insbesondere um 10 mm bis 30 mm, eingekürzt werden. Die Größenordnung der Verkürzung des Hubes richtet sich im Wesentlichen nach dem Verhältnis, welches zwischen den Hochlaufzeiten der Antriebe der Komponenten der Arbeitsstelle besteht, insbesondere zwischen der Fadenabzugswalze und der Wickelwelle. Hierbei kann die Hochlaufzeit des die Wickelewelle antreibenden Antriebes wiederum maßgeblich vom Durchmesser der Kreuzspule im Zeitpunkt der Fadenunterbrechung abhängig sein, während die Hochlaufzeit des Antriebes der Fadenabzugswalze als nahezu konstant angesehen werden kann.In particular, the Nennhub the Fadenchangiereinrichtung by about 5 mm to 40 mm, in particular by 10 mm to 30 mm, are shortened. The magnitude of the shortening of the stroke depends essentially on the ratio which exists between the ramp-up times of the drives of the components of the job, in particular between the thread take-off roller and the winding shaft. Here, the ramp-up time of the drive shaft driving the turn turn be significantly dependent on the diameter of the cheese at the time the thread interruption, while the ramp-up time of the drive of the thread take-off roller can be regarded as almost constant.
Gemäß Anspruch 4 wird vorgeschlagen, dass jede Arbeitsstelle eine Steuerungsvorrichtung umfasst, die die Verkürzung des Nennhubes der Fadenchangiereinrichtung nach der erfolgten Behebung der Fadenunterbrechung für die Dauer der Aufspulung einer definierten Fadenlänge auf die Kreuzspule steuert.According to claim 4, it is proposed that each workstation comprises a control device which reduces the shortening of the Nennhubes the Fadenchangiereinrichtung after the elimination of the thread interruption for the duration of winding a defined thread length controls the cross-wound bobbin.
Hierzu kann die Steuerungsvorrichtung den Nennhub der Fadenchangiereinrichtung für die Dauer zumindest der Entleerung der Fadenspeichereinrichtung reduzieren .For this purpose, the control device can reduce the nominal stroke of the thread switching device for the duration of at least the emptying of the thread storage device.
Vorteilhafterweise kann die Textilmaschine eine Vorrichtung zur Bestimmung der mit verkürztem Hub aufgespulten Fadenlänge umfassen. Hierzu kann die Fadenlänge über die Drehzahl beziehungsweise die Schrittinkremente des Antriebes der Wickelwelle, dessen Drehzahl beziehungsweise Schrittinkremente von der Steuerungsvorrichtung überwacht wird, sowie aus dem jeweils aktuellen Durchmesser der herzustellenden Kreuzspule abgeleitet werden.Advantageously, the textile machine may comprise a device for determining the length of the thread wound up with a shortened stroke. For this purpose, the thread length on the speed or the step increments of the drive of the winding shaft whose speed or step increments is monitored by the control device, as well as from the respective current diameter of the cheese to be produced are derived.
Die vorliegende Erfindung wird nachfolgend anhand einer schematisiert dargestellten Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine näher erläutert.The present invention will be explained in more detail below with reference to a schematically illustrated workstation of a textile machine producing cross-wound bobbins.
Figur 1 zeigt in perspektivischer Darstellung eine Arbeitsstelle 1 einer Offenend-Rotorspinnmaschine, die, wie bekannt und daher nur schematisch dargestellt, über eine Offenend-Spinnvorrichtung 2 zur Herstellung eines Fadens 9 sowie über eine in Fadenlaufrichtung F nachgeschalteteFigure 1 shows a perspective view of a job 1 an open-end rotor spinning machine, which, as known and therefore shown only schematically, via an open-end spinning device 2 for producing a thread 9 and a downstream in the direction of thread F
Spulvorrichtung 3 verfügt. Auf dieser Spulvorrichtung 3 wird der Faden 9 zu einer Kreuzspule 8 aufgewickelt.Winding device 3 has. On this winding device 3, the thread 9 is wound into a package 8.
Der in der Offenend-Spinnvorrichtung 2 hergestellte Faden 9 wird, wie angedeutet, durch eine Fadenabzugseinrichtung 27, die eine einzelmotorisch antreibbare Fadenabzugswalze 10 sowie eine an die Fadenabzugswalze 10 anstellbare, von dieser reibschlüssig mitgenommene Druckrolle 14 aufweist, aus der Offenend- Spinnvorrichtung 2 abgezogen.The thread 9 produced in the open-end spinning device 2 is, as indicated, by a thread withdrawal device 27, the one driven by a single motor thread take-off roller 10 and an engageable with the thread take-off roll 10, from this frictionally entrained pressure roller 14, withdrawn from the open-end spinning device 2.
Wie in Figur 1 weiter angedeutet, verlässt der Faden 9 die Offenend-Spinnvorrichtung 2 durch ein so genanntes Faden- abzugsröhrchen 21, in dessen Bereich außerdem ein schwenkbar gelagertes Anspinnhilfsorgan 16 angeordnet ist, das nach einer Fadenunterbrechung den durch eine Saugdüse 4 von der Kreuzspule 8 zurückgeholten Faden 9 übernimmt und das Fadenende zur Fadenverbindung vorbereitet.As further indicated in FIG. 1, the yarn 9 leaves the open-end spinning device 2 through a so-called yarn withdrawal tube 21, in the region of which a pivotally mounted piecing aid 16 is arranged, which after a yarn break is interrupted by a suction nozzle 4 from the cross-wound bobbin 8 retrieved thread 9 takes over and prepares the thread end for thread connection.
Im Bereich des Fadenlaufweges sind des Weiteren ein Fadenwächter 26, eine mechanische Fadenspeichereinrichtung 7, eine pneumatische Fadenspeichereinrichtung 12 sowie eine Paraffiniereinrichtung 5 angeordnet. Die pneumatische Fadenspeichereinrichtung 12 ist als diskontinuierlich arbeitender Speicher ausgebildet, das heißt die Fadenspeichereinrichtung 12 wird nach jedem erfolgten Fadenverbindungsvorgang vollständig entleert. Während des Betriebes der Offenend-Spinnvorrichtung 2 wird die Fadenspeichereinrichtung 12 über eine nicht dargestellte Unterdruckquelle mit Saugluft beaufschlagt.Furthermore, a thread monitor 26, a mechanical thread storage device 7, a pneumatic thread storage device 12 and a waxing device 5 are arranged in the area of the thread running path. The pneumatic thread storage device 12 is formed as a discontinuous working memory, that is, the thread storage device 12 is completely emptied after each thread connecting operation. During operation of the open-end spinning device 2, the yarn storage device 12 is acted upon by a vacuum source, not shown, with suction air.
Die Spuleinrichtung 3 besteht, wie üblich, aus einem Spulenrahmen 22 zum drehbaren Haltern einer Kreuzspule 8, einer vorzugsweise über einen reversierbaren Einzelantrieb 19 antreibbaren Wickelwelle 23 sowie einer Fadenchangiereinrichtung 24, die beispielsweise über einen Schrittmotor 20 angetrieben wird.The winding device 3 consists, as usual, from a creel 22 for rotatably supporting a cross-wound bobbin 8, a preferably via a reversible single drive 19 driven winding shaft 23 and a Fadenchangiereinrichtung 24, which is driven for example via a stepping motor 20.
Des Weiteren verfügen derartige Arbeitsstellen 1 wie bereits erwähnt 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, such work stations 1 have, as already mentioned, a suction nozzle 4 which, by means of a stepping motor 6, is defined between a thread take-up position lying in the region of the winding device 3 and one in the region of Spinning device 2 lying thread transfer position is adjustable.
Wie üblich sind die einzelnen Schrittmotoren der Komponenten der Arbeitsstelle 1 über diverse Steuerleitungen an eine Steuerungsvorrichtung, im vorliegenden Ausführungsbeispiel an einen Arbeitsstellenrechner 25, angeschlossen. Dadurch sind die einzelmotorischen Antriebe der Komponenten der Arbeitsstellen 1 unabhängig voneinander ansteuerbar. Alternativ kann die Steuerungsvorrichtung als ein zentraler Rechner der Textilmaschine ausgeführt sein.As usual, the individual stepper motors of the components of the workstation 1 are connected via various control lines to a control device, in the present exemplary embodiment to a workstations computer 25. As a result, the individual motor drives of the components of the workstations 1 are independently controllable. Alternatively, the control device may be designed as a central computer of the textile machine.
Das erfindungsgemäße Verfahren wird nachfolgend anhand des dargestellten Ausführungsbeispieles der Offenend-Rotorspinn- maschine beschrieben. Beim Auftreten einer Fadenunterbrechung werden zunächst der Antrieb der Fadenabzugswalze 10 sowie die Antriebe 19 und 20 der Fadenchangiereinrichtung 24 und der Wickelwelle 23 still gesetzt und die herzustellende Kreuzspule 8 wird mittels des Spulenrahmens 22 von der Wickelwelle 23 abgehoben. Anschließend wird ein Fadenverbindungsvorgang eingeleitet, wobei an der betroffenen Arbeitsstelle 1 die Antriebe der Fadenabzugswalze 10, der Fadenchangiereinrichtung 24 sowie der Wickelwelle 23 synchron zur Einleitung des Fadenverbindungs-vorganges wieder in Betrieb genommen werden. Die Inbetriebnahme der Fadenabzugswalze 10, der Fadenchangiereinrichtung 24 sowie der Wickelwelle 23 erfolgt dabei unter Berücksichtigung von zeitlich aufeinander abgestimmten Beschleunigungsvorgängen der einzelnen Antriebe, die vor allem den unterschiedlichen Massenträgheitsmomenten und dem Antriebsschlupf der in Betrieb zu nehmenden Komponenten Rechnung tragen soll.The inventive method will be described below with reference to the illustrated embodiment of the open-end rotor spinning machine. When a thread interruption occurs, first the drive of the thread take-off roll 10 and the drives 19 and 20 of the thread-changing device 24 and the winding shaft 23 are stopped and the cross-wound bobbin 8 to be produced is lifted off the winding shaft 23 by means of the creel 22. Subsequently, a yarn joining process is initiated, wherein at the affected workstation 1, the drives of the thread take-off roll 10, the Fadenchangiereinrichtung 24 and the winding shaft 23 are put into operation synchronously to initiate the yarn joining process again. The commissioning of the thread take-off roller 10, the Fadenchangiereinrichtung 24 and the winding shaft 23 is carried out taking into account temporally coordinated acceleration processes of the individual drives, which should take into account in particular the different moments of inertia and the traction of the operating components to be taken into account.
Durch die unterschiedlichen Massenträgheitsmomente der einzelnen anzutreibenden Komponenten kommt es insbesondere bei der Beschleunigung der Fadenabzugswalze 10 und der Wickelwelle 23 zu einer Differenz im zeitlichen Hochlaufverhalten, die in Abhängigkeit von den jeweiligen Spinnbedingungen ein Verhältnis von 1:10 oder darüber erreichen kann. Da das Massenträgheitsmoment der Wickelwelle 23 mit zunehmendem Durchmesser der Kreuzspule 8 größer wird, während das Massenträgheitsmoment der Fadenabzugswalze 10 stets konstant bleibt und zudem der Antriebsschlupf bei der Wickelwelle 23 zu berücksichtigen ist, wird die Fadenabzugswalze 10 stets vor der Wickelwelle 23 ihre Betriebsgeschwindigkeit im normalen Spinnbetrieb erreichen.Due to the different moments of inertia of the individual components to be driven, it comes in particular in the Acceleration of the thread take-off roll 10 and the winding shaft 23 to a difference in the time-up behavior, which can reach a ratio of 1:10 or above, depending on the respective spinning conditions. Since the moment of inertia of the winding shaft 23 increases with increasing diameter of the cheese 8, while the moment of inertia of the thread take-off roll 10 always remains constant and also the drive slip is to be considered in the winding shaft 23, the thread take-off roll 10 always before the winding shaft 23 their operating speed in normal spinning operation to reach.
Demzufolge muss für den Zeitraum vom Starten der Wickelwelle 23 bis zum Erreichen der Betriebsgeschwindigkeit im normalen Spinnbetrieb die Überlänge des von der Offenend-Spinn- vorrichtung 2 hergestellten Fadens 9, der von der Kreuzspule 8 auf Grund der zu geringen Geschwindigkeit der Wickelwelle 23 nicht aufgespult werden kann, zunächst zwischengespeichert werden, was über die Fadenspeichereinrichtung 12 realisiert wird. Das hierbei auftretende Problem ist die reduzierte Wickelspannung, die während der Entleerung der Fadenspeichereinrichtung 12 nach dem Fadenverbindungsvorgang vorliegt, da die Wickelspannung des Fadens 9 während dieses Zeitraumes nur durch den in der Fadenspeichereinrichtung 12 anstehenden Unterdruck erzeugt wird.Accordingly, for the period from the start of the winding shaft 23 to reach the operating speed in the normal spinning operation, the excess length of the thread 9 produced by the open-end spinning device 2, which are not wound by the cross-wound bobbin 8 due to the slow speed of the winding shaft 23 can, initially be cached, which is realized via the thread storage device 12. The problem occurring here is the reduced winding tension, which is present during the emptying of the thread storage device 12 after the yarn joining operation, since the winding tension of the thread 9 is generated during this period only by the upcoming in the thread storage device 12 negative pressure.
Die reduzierte Wickelspannung führt über diesen Zeitraum zu einer Aufwicklung von lockeren Fadenlagen auf der Kreuzspule 8. Da darüber hinaus der Verlegehub auf der Kreuzspule 8 von dem Nennhub der Fadenchangiereinrichtung 24, deren Geschwindigkeit und der Wickelspannung abhängig ist, stellt sich bei einem gleich bleibenden Nennhub ein größerer Verlegehub auf der Kreuzspule 8 ein. Dies hat zur Folge, dass es bei der Verlegung des Fadens 9 mit dem Nennhub der Fadenchangiereinrichtung 24 zu Abschlägen an den Spulenflanken des auf der Kreuzspule 8 verlegten Fadens 9 kommt. Diese Abschläge führen zwangsläufig zu Problemen im Ablaufverhalten bei der Weiterverarbeitung der Kreuzspule 8.The reduced winding tension leads to a winding of loose thread layers on the cheese 8 over this period. Moreover, since the laying stroke on the cheese 8 of the Nennhub the Fadenchangiereinrichtung 24, their speed and the winding tension is dependent, arises at a constant Nennhub larger laying stroke on the cheese 8 a. This has the consequence that when laying the thread 9 with the nominal stroke of the thread-switching device 24 to tees on the coil edges of the on the cross-wound bobbin. 8 misplaced thread 9 is coming. These deductions inevitably lead to problems in the flow behavior in the further processing of the cheese 8.
Um die Auswirkungen der Reduzierung der Wickelspannung nach dem Fadenverbindungsvorgang zu kompensieren, wird zumindest für die Dauer der vollständigen Entleerung der Fadenspeichereinrichtung 12 der Nennhub der Fadenchangiereinrichtung 24 verkürzt. Dadurch können Abschläge an den Spulenkanten auf Grund der geringeren Wickelspannung des zu verlegenden Fadens 9 weitgehend vermieden werden. Zudem kann eine über die definierte Fadenlänge hinausgehende zusätzliche Fadenlänge aufgewickelt werden, um zu gewährleisten, dass nach dem Leeren der Fadenspeichereinrichtung 12 und dem Hochlaufen aller Antriebe der Arbeitsstelle 1, die zur Durchführung des Vorganges der Behebung der Unterbrechung des Fadens neu gestartet wurden, für die Umschaltung von dem reduzierten Hub auf den Nennhub der Fadenchangiereinrichtung eine stabile und leicht erhöhte Wickelspannung gegeben ist. Die Länge des zusätzlich mit verkürztem Nennhub aufgespulten Fadens 9 beträgt zwischen 1 und 10 m. Die Verkürzung des Nennhubes kann hierzu zwischen 5 und 40 mm, insbesondere zwischen 10 mm und 30 mm betragen.In order to compensate for the effects of the reduction of the winding tension after the thread connecting operation, the nominal stroke of the thread switching device 24 is shortened, at least for the duration of the complete emptying of the thread storage device 12. As a result, deductions at the coil edges due to the lower winding tension of the thread to be laid 9 can be largely avoided. In addition, beyond the defined thread length beyond additional thread length can be wound to ensure that after emptying the thread storage device 12 and the startup of all drives the job 1, which were restarted to carry out the process of repairing the interruption of the thread for the Switching from the reduced stroke to the nominal stroke of the thread-switching device a stable and slightly increased winding tension is given. The length of additionally wound with shortened nominal stroke thread 9 is between 1 and 10 m. The shortening of the nominal stroke can be between 5 and 40 mm, in particular between 10 mm and 30 mm.
Die Umsetzung des erfindungsgemäßen Verfahrens ist gleichermaßen an Spulmaschinen umsetzbar, die ebenfalls über einzelmotorisch angetriebene Komponenten sowie eine Fadenspeichereinrichtung verfügen, da an diesen auf Grund der wesentlich höheren Verarbeitungsgeschwindigkeit die beschriebene Problematik noch stärker auftritt. The implementation of the method according to the invention is equally feasible on winding machines, which also have single motor driven components and a thread storage device, since at these due to the much higher processing speed, the problem described occurs even more.

Claims

Patentansprüche : Claims:
1. Verfahren zum Aufspulen eines Fadens (9) an einer Kreuzspulen (8) herstellenden Textilmaschine, die eine Vielzahl gleichartiger Arbeitstellen (1) aufweist,1. A method for winding a thread (9) on a cross-wound bobbin (8) producing textile machine, which has a plurality of similar workstations (1),
- wobei jede Arbeitstelle (1) eine- where each workstation (1) has a
Fadenchangiereinrichtung (24) zur Verlegung des Fadens (9) während des normalen Betriebes der Textilmaschine mit einem Nennhub auf einer von einer Wickelwelle (23) angetriebenen Kreuzspule (8) umfasst,Thread-changing device (24) for laying the thread (9) during normal operation of the textile machine with a nominal stroke on a cross-wound bobbin (8) driven by a winding shaft (23),
- eine Vorrichtung (2) zur Behebung der Unterbrechung des Fadens (9) vorhanden ist,- There is a device (2) for eliminating the interruption of the thread (9),
- und wobei nach der Behebung der Fadenunterbrechung zunächst eine definierte Fadenlänge in einer Fadenspeichereinrichtung (12) gespeichert wird,- and after the removal of the thread interruption first a defined thread length is stored in a thread storage device (12),
dadurch gekennzeichnet,characterized,
dass der Nennhub der Fadenchangiereinrichtung (24) der Arbeitstelle (1) nach der erfolgten Behebung der Fadenunterbrechung für die Dauer der Aufspulung einer definierten Fadenlänge auf die Kreuzspule (8) verkürzt wird.that the Nennhub the Fadenchangiereinrichtung (24) of the workstation (1) after the elimination of the thread interruption for the duration of winding a defined thread length on the cheese (8) is shortened.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die aufzuspulende definierte Fadenlänge so festgelegt wird, dass sie frühestens mit der vollständigen Entleerung der Fadenspeichereinrichtung (12) und dem Erreichen der dem normalen Betrieb der Textilmaschine entsprechenden Geschwindigkeiten der angetriebenen Komponenten erreicht wird. 2. The method according to claim 1, characterized in that the aufzuspulende defined thread length is set so that it is achieved at the earliest with the complete emptying of the thread storage device (12) and the achievement of the normal operation of the textile machine corresponding speeds of the driven components.
3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass eine über die definierte Fadenlänge hinausgehende zusätzliche Fadenlänge mit reduziertem Hub aufgewickelt wird.3. The method according to any one of claims 1 or 2, characterized in that over the defined thread length beyond additional thread length is wound with a reduced stroke.
4. Verfahren nach einem Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Nennhub der Fadenchangiereinrichtung (24) um cirka 5 mm bis 40 mm, insbesondere um 10 mm bis 30 mm, eingekürzt wird.4. The method according to any one of claims 1 or 2, characterized in that the Nennhub the Fadenchangiereinrichtung (24) by about 5 mm to 40 mm, in particular by 10 mm to 30 mm, is shortened.
5. Kreuzspulen herstellende Textilmaschine mit einer Vielzahl gleichartiger Arbeitsstellen (1) zur Durchführung eines Verfahrens nach einem der Ansprüche 1 bis 4, die eine einzelmotorisch angetriebene Fadenchangiereinrichtung (24) sowie eine Fadenspeichereinrichtung (12) umfassen, und dass eine Vorrichtung (2) zur Behebung der Unterbrechung des Fadens (9) vorgesehen ist, dadurch gekennzeichnet, dass jede Arbeitsstelle (1) eine Steuerungsvorrichtung (25) aufweist, die die Verkürzung des Nennhubes der Fadenchangiereinrichtung (24) nach der erfolgten Behebung der Fadenunterbrechung für die Dauer der Aufspulung einer definierten Fadenlänge auf die Kreuzspule (8) steuert.5. Cheese-making textile machine with a plurality of similar jobs (1) for performing a method according to one of claims 1 to 4, comprising a single motor driven Fadenchangiereinrichtung (24) and a thread storage device (12), and that a device (2) to remedy the interruption of the thread (9) is provided, characterized in that each workstation (1) comprises a control device (25), the shortening of the Nennhubes the Fadenchangiereinrichtung (24) after the elimination of the thread interruption for the duration of winding a defined thread length on the cheese (8) controls.
6. Kreuzspulen herstellende Textilmaschine nach Anspruch 5, dadurch gekennzeichnet, dass die Steuerungsvorrichtung den Nennhub der Fadenchangiereinrichtung (24) für die Dauer zumindest der Entleerung der Fadenspeichereinrichtung (12) reduziert . 6. cheesemaking textile machine according to claim 5, characterized in that the control device reduces the Nennhub the Fadenchangiereinrichtung (24) for the duration of at least the emptying of the yarn storage device (12).
EP06829641A 2006-01-12 2006-12-15 Method for spooling a thread on a textile machine which produces crosswound bobbins, and textile machine which produces crosswound bobbins Expired - Fee Related EP1979257B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610001565 DE102006001565A1 (en) 2006-01-12 2006-01-12 Winding thread in cross bobbin producing machine, e.g. open end rotor spinning machine, includes shortening nominal stroke of thread changer after eliminating thread breakage
PCT/EP2006/012091 WO2007087868A1 (en) 2006-01-12 2006-12-15 Method for spooling a thread on a textile machine which produces crosswound bobbins, and textile machine which produces crosswound bobbins

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EP1979257A1 true EP1979257A1 (en) 2008-10-15
EP1979257B1 EP1979257B1 (en) 2009-09-23

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EP (1) EP1979257B1 (en)
CN (1) CN101346297B (en)
DE (2) DE102006001565A1 (en)
WO (1) WO2007087868A1 (en)

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Also Published As

Publication number Publication date
EP1979257B1 (en) 2009-09-23
WO2007087868A1 (en) 2007-08-09
CN101346297B (en) 2011-07-27
DE102006001565A1 (en) 2007-07-19
CN101346297A (en) 2009-01-14
DE502006004947D1 (en) 2009-11-05

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