EP0148419A1 - Device for forming a yarn tail winding - Google Patents

Device for forming a yarn tail winding Download PDF

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Publication number
EP0148419A1
EP0148419A1 EP84114816A EP84114816A EP0148419A1 EP 0148419 A1 EP0148419 A1 EP 0148419A1 EP 84114816 A EP84114816 A EP 84114816A EP 84114816 A EP84114816 A EP 84114816A EP 0148419 A1 EP0148419 A1 EP 0148419A1
Authority
EP
European Patent Office
Prior art keywords
thread
bobbin
tube
plate
suction device
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
EP84114816A
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German (de)
French (fr)
Other versions
EP0148419B1 (en
Inventor
Edmund Dipl.-Ing. Schuller (Fh)
Günther Dipl.-Ing. Böhm (TU)
Rupert Dipl.-Ing. Karl (Fh)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Schubert und Salzer Maschinenfabrik AG
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Publication date
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Application filed by Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
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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
    • 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
    • B65H54/34—Traversing devices; Package-shaping arrangements for laying subsidiary winding, e.g. transfer tails
    • B65H54/343—Traversing devices; Package-shaping arrangements for laying subsidiary winding, e.g. transfer tails when starting winding on an empty bobbin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H65/00—Securing material to cores or formers
    • 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 device for forming a thread reserve winding with a bobbin rotating around the bobbin tube, which engages with a centering shoulder in the inner diameter of the bobbin tube and has a thread catching device.
  • the coil sleeve is accommodated between two coil plates which are rotatably mounted in the coil arms.
  • the coil plates usually have at least one inner shoulder which engages in the inner diameter of the coil sleeve.
  • One of the bobbin plates rotating with the bobbin tube is also provided with a thread catching device in order to transfer the thread after the bobbin change to the inserted empty tube, where some reserve turns are first formed before the actual winding of the bobbin takes place.
  • a thread suction device which continuously delivers the After the interruption of the winding process, the thread picks up the full bobbin until the empty tube is inserted and the thread can be transferred to it.
  • a thread guide is assigned to the thread suction device that receives the spun thread, which on the one hand has the task of bringing the thread together with the suction device into the area of the thread catching device, and on the other hand, after the reserve has been wound, the thread is passed to the traversing thread guide handed over to carry out the winding of the coil.
  • the cutting off of the thread after it has been fixed in the thread catching device is carried out by a thread separating device preferably assigned to the thread suction device.
  • the object of the present invention is to create a device which enables the safe catching and fixing of the thread end during the production of a thread reserve.
  • the object is achieved in a device according to the preamble of claim 1 in that slots are arranged on the circumference of the coil plate, which extend in the radial direction to the inner centering shoulder.
  • the thread end remaining in the thread catching device is transported into the interior of the bobbin tube and thus secured in a protected manner. It has been shown that a relative movement occurs between the bobbin tube and the bobbin during the winding process, despite the clamping, in such a way that the bobbin receives a slightly leading rotation of the bobbin tube. As a result of this movement, the thread caught in the slot of the thread catching device is taken along and drawn ever deeper into the slot until it reaches the inside of the bobbin tube at the bottom of the slot. In this way, hanging thread ends that fling around and are destroyed are avoided. In addition, no tensile force loosening the reserve winding is exerted on the thread end.
  • the slots can be straight or curved to guide the thread end into the inside of the bobbin tube. In order to ensure safe and good catching, the slots form an acute angle at their outer end with the circumferential tangent of the coil plate.
  • two thread guide elements can be moved in the thread path extending from a thread take-off tube to a thread suction device, said thread guide elements presenting the thread of the thread catching device approximately parallel to the sleeve axis.
  • the first thread guide element at the same time brings the thread piece extending into the thread suction device into the area of a thread separating device, so that the cutting and thus short thread ends can also be achieved without additional means during the presentation.
  • the second thread guide element moves the thread for winding up the reserve winding in continuation of its original movement away from the bobbin plate towards the center of the tube and back towards the bobbin plate. This has the effect that the thread end is wound over by reserve turns and is thus fixed. Due to the features of subclaims 7 to 9, a simple and space-saving device is achieved with which the individual spinning positions can also be operated from an operating trolley when changing the bobbin.
  • the invention is not limited to open-end spinning devices, but can also be used with advantage in other spinning devices from which the thread is drawn off by a pair of draw-off rollers, regardless of the type of thread feed and the reserve formation.
  • the invention is described below in connection with an open-end spinning device as a thread delivery point. However, the description is limited to laying out the thread in front of the winding unit and forming the thread reserve winding.
  • the process steps preceding these measures, such as spinning on the thread returned from the bobbin, removing the piecing and changing the bobbin for an empty tube, are described, for example, in EP-OS 0 069 205, so that it is not necessary to go into this again here.
  • FIG. 1 denotes the thread draw-off tube of an open-end spinning device, through which the spun thread F is drawn off continuously.
  • the thread is drawn off by a pair of draw rollers 2, 20.
  • a bobbin tube 3 with a bobbin plate 4 and its drive roller 30 are shown.
  • the bobbin tube 3 is held in a known manner by two bobbin arms which press it against the drive roller 30.
  • a bobbin 4 is rotatably supported, of which the bobbin 4 shown has a plurality of slots 40 serving as a thread catching device.
  • These slots 40 extend from the outer circumference of the coil plate in the radial direction to a centering shoulder 41 which engages in the interior of the coil sleeve and thus centers it and holds it in the radial direction.
  • These slots are shown straight in FIG. 3 and form an acute angle p (with the circumferential tangent of the coil plate 4 at their entrance. However, they can also be designed in an arc shape so that they open into the inner centering shoulder 41 in an approximately radial direction.
  • the handling and guidance of the thread F before and during its transfer to the bobbin tube 3 corresponds to the processes described in EP-OS 0 069 205.
  • the thread guide 5 shown there in FIG. 2 corresponds to the thread guide fork 5 in FIG. 1, which is arranged in front of the bobbin tube 3. The only difference is that the thread guide fork 5 cannot be moved.
  • the mouth 40 of the thread suction device 4 in EP-OS 0 069 205 corresponds to the tubular thread suction device 6 connected to a vacuum source, not shown, which has a thread separation device 60 in the vicinity of its mouth. This separating device can be arranged inside the tube or, as shown in EP-OS 0 069 205, also outside the tube.
  • the thread guide fork 5 is arranged in a stationary manner.
  • a first thread guide element 7 is provided near the outside of the bobbin plate 4, while a second thread guide element 8 is arranged on the side of the bobbin plate 4 facing the bobbin tube. Both thread guide elements 7 and 8 are pivotally attached to the thread suction device 6 so that they can grip the thread extending from the thread take-off tube 1 of the spinning device to the thread suction device 6.
  • the tubular thread suction device 6 can be pivoted from a thread take-up position, not shown, into the position according to FIG. 1, in which its mouth is located laterally from the outside of the bobbin plate 4, but still in front of the thread running direction thereof.
  • a thread separating device 60 is arranged in a stationary manner, expediently in the vicinity of its mouth, in order to keep the length of the thread end cut off within limits. This makes the two threads guide elements 7 and 8 are attached to the thread suction device 6, these can be moved with the thread suction device from an initial position in the vicinity of the bobbin and back again.
  • the thread guide elements 7 and 8 are arranged together with the thread suction device 6 and the thread guide fork 5 on a movable maintenance carriage and are accordingly positioned in front of the winding device of each spinning station in order to carry out the replacement of a full bobbin with an empty tube and the thread emerging from the spinning device to transfer to this empty tube.
  • the thread F drawn continuously by the take-off rollers 2, 20 from the thread take-off tube 1 first runs into the thread suction device 6, where it travels there in the thread guide fork on the path indicated by the broken line 5 is performed.
  • the thread guide fork 5 is at this time in the radial plane of the end face of the bobbin plate 4. Then the first thread guide element 7 and the second thread guide element 8 are moved into the thread path so that the thread is gripped and, held by these two thread guide elements, the thread catching device 40 of the bobbin plate 4 is placed in such a way that this thread piece is aligned approximately parallel to the sleeve axis.
  • the thread piece extending into the thread suction device 6 must be cut off the.
  • the thread suction device 6 is brought into the area of a thread separation device 60 which is arranged as close as possible to the suction opening of the thread suction device 6.
  • the arrangement of the thread separation device 60 can be arranged on the thread suction device 6 or, as shown schematically in FIG. 1, in the thread suction device 6.
  • the second thread guide element 8 is also moved into the thread path at the same time as the first thread guide element 7, so that the thread section lying between the first thread guide element 7 and the second thread guide element 8 is in a position in which it rotates the plane of the thread catch slots 40 crosses on the circumference of the bobbin plate 4 rotating with the bobbin tube 3, and is thereby captured by one of these slots and carried along by the bobbin plate.
  • the second thread guide element 8 is now moved away from the bobbin plate 4 in the direction of the center of the bobbin and back towards the bobbin plate for winding up the reserve winding.
  • the thread reserve is preferably wound up with spinning tension, in that the thread F is ejected, for example, from the clamping line of the pair of draw-off rollers or, as shown in FIG. 1, the pressure roller 2 of the pair of draw-off rollers is lifted by a distance a from its drive roller.
  • the spinning tension turns out that the thread reserve is wound onto the sleeve sufficiently tightly.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Winding Filamentary Materials (AREA)

Abstract

Bei einer Vorrichtung zum Bilden einer Fadenreservewicklung mit einem mit der Spulenhülse (3) umlaufenden Spulenteller (4), der mit einer Zentrierschulter in den inneren Durchmesser der Spulenhülse eingreift und eine Fadenfangvorrichtung aufweist, sind am Umfang des Spulentellers (4) Schlitze (40) angeordnet, die in radialer Richtung bis auf die innere Zentrierschulter reichen. Die Schlitze (40) können gerade oder bogenförmig ausgebildet sein und, um ein besonders sicheres Fangen des Fadens zu gewährleisten, mit der Umfangstangente des Spulentellers (4) an ihrem Eintritt einen spitzen Winkel (α) bilden. Um den Faden in eine für sein Einfangen günstige Lage zu bringen, sind in den Fadenweg, der sich von einem Fadenabzugsrohr (1) zu einer Fadensaugvorrichtung (6) erstreckt, zwei Fadenführungselemente (7, 8) bewegbar. Diese legen den Faden der Fadenfangvorrichtung annähernd parallel zur Hülsenachse vor.In a device for forming a thread reserve winding with a bobbin plate (4) rotating around the bobbin tube (3), which engages with a centering shoulder in the inner diameter of the bobbin tube and has a thread catching device, slots (40) are arranged on the circumference of the bobbin plate (4) , which extend in the radial direction up to the inner centering shoulder. The slots (40) can be straight or arched and, in order to ensure particularly safe catching of the thread, form an acute angle (α) with the circumferential tangent of the bobbin plate (4) at their entry. In order to bring the thread into a position that is favorable for catching it, two thread guide elements (7, 8) can be moved into the thread path, which extends from a thread take-off tube (1) to a thread suction device (6). These place the thread of the thread catching device approximately parallel to the axis of the tube.

Description

Die Erfindung betrifft eine Vorrichtung zum Bilden einer Fadenreserwicklung mit einem mit der Spulenhülse umlaufenden Spulenteller, der mit einer Zentrierschulter in den inneren Durchmesser der Spulenhülse eingreift und eine Fadenfangvorrichtung aufweist.The invention relates to a device for forming a thread reserve winding with a bobbin rotating around the bobbin tube, which engages with a centering shoulder in the inner diameter of the bobbin tube and has a thread catching device.

Bei einer bekannten Vorrichtung der oben genannten Art (EP-OS O 069 205) ist die Spulenhülse zwischen zwei drehbar in den Spulenarmen gelagerten Spulentellern aufgenommen. Zur Zentrierung der Spulenhülse weisen die Spulenteller üblicherweise wenigstens eine innere Schulter auf, die in den Innendurchmesser der Spulenhülse eingreift. Einer der mit der Spulenhülse umlaufenden Spulenteller ist ferner mit einer Fadenfangvorrichtung versehen, um den Faden nach dem Spulenwechsel auf die eingelegte Leerhülse zu überführen, wo zuerst einige Reservewindungen gebildet werden, bevor die eigentliche Bewicklung der Spule erfolgt.In a known device of the type mentioned above (EP-OS 0 069 205), the coil sleeve is accommodated between two coil plates which are rotatably mounted in the coil arms. For centering the coil sleeve, the coil plates usually have at least one inner shoulder which engages in the inner diameter of the coil sleeve. One of the bobbin plates rotating with the bobbin tube is also provided with a thread catching device in order to transfer the thread after the bobbin change to the inserted empty tube, where some reserve turns are first formed before the actual winding of the bobbin takes place.

Da der Spulenwechsel ohne Unterbrechung des Spinnvorganges der Offenend-Spinnvorrichtung erfolgen soll, ist ferner eine Fadensaugvorrichtung vorgesehen, die den kontinuierlich gelieferten Faden nach Unterbrechung des Spulvorganges beim Ausstoßen der vollen Spule aufnimmt, bis die Leerhülse eingelegt ist und der Faden an diese überführt werden kann. Zur Übergabe des Fadens an die Spulvorrichtung ist der den gesponnenen Faden aufnehmenden Fadensaugvorrichtung ein Fadenführer zugeordnet, der einerseits die Aufgabe hat, den Faden zusammen mit der Absaugvorrichtung in den Bereich der Fadenfangvorrichtung zu bringen, auf der anderen Seite nach erfolgter Reservewicklung den Faden an den Changierfadenführer zu übergeben, um die Bewicklung der Spule durchzuführen. Das Abschneiden des Fadens nach seiner Festlegung in der Fadenfangvorrichtung erfolgt durch eine vorzugsweise der Fadensaugvorrichtung zugeordnete Fadentrennvorrichtung.Since the bobbin change should take place without interrupting the spinning process of the open-end spinning device, a thread suction device is also provided, which continuously delivers the After the interruption of the winding process, the thread picks up the full bobbin until the empty tube is inserted and the thread can be transferred to it. To transfer the thread to the winding device, a thread guide is assigned to the thread suction device that receives the spun thread, which on the one hand has the task of bringing the thread together with the suction device into the area of the thread catching device, and on the other hand, after the reserve has been wound, the thread is passed to the traversing thread guide handed over to carry out the winding of the coil. The cutting off of the thread after it has been fixed in the thread catching device is carried out by a thread separating device preferably assigned to the thread suction device.

Bei dieser Art der Fadenvorlage hat sich jedoch gezeigt, daß, bedingt durch die Art der Vorlage des Fadens für die Fadenfangvorrichtung, relativ lange Fadenenden entstehen, die während der Bewicklung der Spule herumgeschleudert werden und damit nicht nur ausgefranst und für das spätere Anknüpfen an die vorhergehende Spule in der Weiterverarbeitung unbrauchbar werden, sondern auch die Reservewicklung gelockert wird, so daß diese von der Hülse abfällt und damit verlorengeht.With this type of thread template, however, it has been shown that, due to the way the thread is presented for the thread catching device, relatively long thread ends arise which are thrown around during the winding of the bobbin and thus not only frayed and for later connection to the previous one Coil become unusable in further processing, but also the reserve winding is loosened so that it falls off the sleeve and is therefore lost.

Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zu schaffen, die das sichere Fangen und Festlegen des Fadenendes bei der Herstellung einer Fadenreserve ermöglicht.The object of the present invention is to create a device which enables the safe catching and fixing of the thread end during the production of a thread reserve.

Die Aufgabe wird bei einer Vorrichtung gemäß dem Oberbegriff des Anspruches 1 erfindungsgemäß dadurch gelöst, daß am Umfang des Spulentellers Schlitze angeordnet sind, welche in radialer Richtung bis auf die innere Zentrierschulter reichen.The object is achieved in a device according to the preamble of claim 1 in that slots are arranged on the circumference of the coil plate, which extend in the radial direction to the inner centering shoulder.

Dadurch wird das in der Fadenfangvorrichtung verbleibende Fadenende in das Innere der Spulenhülse transportiert und damit geschützt festgelegt. Es hat sich nämlich gezeigt, daß zwischen Spulenhülse und Spulenteller während des Wickelvorganges trotz der Klemmung eine Relativbewegung entsteht, derart, daß der Spulenteller eine der Spulenhülse leicht voreilende Drehung erhält. Durch diese Bewegung wird der in dem Schlitz der Fadenfangvorrichtung gefangene Faden mitgenommen und immer tiefer in den Schlitz hineingezogen, bis er am Grund des Schlitzes in das Innere der Spulenhülse gelangt. Heraushängende Fadenenden, die herumschleudern und dadurch zerstört werden, werden auf diese Weise vermieden. Außerdem wird keine, die Reservewindung lockernde Zugkraft auf das Fadenende ausgeübt. Die Schlitze können gerade oder auch bogenförmig ausgebildet sein, um das Fadenende in das Innere der Spulenhülse zu leiten. Um ein sicheres und gutes Fangen zu gewährleisten, bilden die Schlitze an ihrem äußeren Ende mit der Umfangstangente des Spulentellers einen spitzen Winkel.As a result, the thread end remaining in the thread catching device is transported into the interior of the bobbin tube and thus secured in a protected manner. It has been shown that a relative movement occurs between the bobbin tube and the bobbin during the winding process, despite the clamping, in such a way that the bobbin receives a slightly leading rotation of the bobbin tube. As a result of this movement, the thread caught in the slot of the thread catching device is taken along and drawn ever deeper into the slot until it reaches the inside of the bobbin tube at the bottom of the slot. In this way, hanging thread ends that fling around and are destroyed are avoided. In addition, no tensile force loosening the reserve winding is exerted on the thread end. The slots can be straight or curved to guide the thread end into the inside of the bobbin tube. In order to ensure safe and good catching, the slots form an acute angle at their outer end with the circumferential tangent of the coil plate.

Gemäß einem weiteren Merkmal der Erfindung sind in den sich von einem Fadenabzugsrohr zu einer Fadensaugvorrichtung erstreckenden Fadenweg zwei Fadenführungselemente bewegbar, die den Faden der Fadenfangvorrichtung annähernd parallel zur Hülsenachse vorlegen. Dadurch wird eine für das Einfangen des Fadens günstige Lage sowie ein kurzes Fadenende erreicht, das sich gut festlegen läßt.According to a further feature of the invention, two thread guide elements can be moved in the thread path extending from a thread take-off tube to a thread suction device, said thread guide elements presenting the thread of the thread catching device approximately parallel to the sleeve axis. As a result, a favorable position for catching the thread and a short thread end is achieved, which can be easily fixed.

Das erste Fadenführungselement bringt bei der Fadenvorlage gleichzeitig das sich in die Fadensaugvorrichtung erstreckende Fadenstück in den Bereich einer Fadentrennvorrichtung, so daß ohne zusätzliche Mittel unmittelbar bei der Vorlage auch das Abtrennen und damit kurze Fadenenden erreicht werden. Das zweite Fadenführungselement bewegt in Fortführung seiner Vorlagebewegung den Faden für das Aufwinden der Reservewindung vom Spulenteller weg in Richtung zur Hülsenmitte und wieder zum Spulenteller hin. Damit wird bewirkt, daß das Fadenende durch Reservewindungen überwickelt und damit festgelegt wird. Durch die Merkmale der Unteransprüche 7 bis 9 wird eine einfache und platzsparende Vorrichtung erreicht, mit welcher auch von einem Bedienungswagen her die einzelnen Spinnstellen beim Spulenwechsel bedient werden können.The first thread guide element at the same time brings the thread piece extending into the thread suction device into the area of a thread separating device, so that the cutting and thus short thread ends can also be achieved without additional means during the presentation. The second thread guide element moves the thread for winding up the reserve winding in continuation of its original movement away from the bobbin plate towards the center of the tube and back towards the bobbin plate. This has the effect that the thread end is wound over by reserve turns and is thus fixed. Due to the features of subclaims 7 to 9, a simple and space-saving device is achieved with which the individual spinning positions can also be operated from an operating trolley when changing the bobbin.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen beschrieben. Es zeigen

  • Fig. 1 eine Spulvorrichtung mit den vor ihr angeordneten erfindungswesentlichen Vorrichtungsteilen zum Bilden einer Fadenreservewicklung in perspektivischer Darstellung;
  • Fig. 2 einen Abschnitt einer Spulenhülse mit einer mittels der Vorrichtung nach Fig. 1 hergestellten Fadenreservewicklung, von vorn gesehen;
  • Fig. 3 einen Spulenteller mit bis auf seine Zentrierschulter reichenden Schlitzen;
  • Fig. 3a eine Schnitt durch den Spulenteller entlang der Linie 3a - 3a in Figur 3.
An embodiment of the invention is described below with reference to the drawings. Show it
  • 1 is a perspective view of a winding device with the device parts of the invention arranged in front of it for forming a thread reserve winding;
  • FIG. 2 shows a section of a bobbin tube with a thread reserve winding produced by means of the device according to FIG. 1, seen from the front;
  • 3 shows a bobbin plate with slots extending to its centering shoulder;
  • 3a shows a section through the coil plate along the line 3a - 3a in Figure 3.

Die Erfindung ist nicht auf Offenend-Spinnvorrichtung beschränkt, sondern kann auch bei anderen Spinnvorrichtungen, aus denen der Faden durch ein Abzugswalzenpaar abgezogen wird, mit Vorteil verwendet werden, unabhängig von der Art der Fadenvorlage und der Reservebildung.The invention is not limited to open-end spinning devices, but can also be used with advantage in other spinning devices from which the thread is drawn off by a pair of draw-off rollers, regardless of the type of thread feed and the reserve formation.

Die Erfindung wird nachstehend in Verbindung mit einer Offenend-Spinnvorrichtung als Fadenlieferstelle beschrieben. Die Beschreibung beschränkt sich jedoch auf das Auslegen des Fadens vor der Spulstelle und das Bilden der Fadenreservewicklung. Die diesen Maßnahmen vorausgehenden Verfahrensschritte, wie Anspinnen des von der Spule zurückgelieferten Fadens, Abführen des Ansetzers und Wechseln der Spule gegen eine Leerhülse, sind beispielsweise in der EP-OS 0 069 205 beschrieben, so daß es sich erübrigt, hier nochmals darauf einzugehen.The invention is described below in connection with an open-end spinning device as a thread delivery point. However, the description is limited to laying out the thread in front of the winding unit and forming the thread reserve winding. The process steps preceding these measures, such as spinning on the thread returned from the bobbin, removing the piecing and changing the bobbin for an empty tube, are described, for example, in EP-OS 0 069 205, so that it is not necessary to go into this again here.

In Figur 1 ist mit 1 das Fadenabzugsrohr einer Offenend-Spinnvorrichtung bezeichnet, durch das hindurch der gesponnene Faden F kontinuierlich abgezogen wird. Der Fadenabzug erfolgt durch ein Abzugswalzenpaar 2, 20.In FIG. 1, 1 denotes the thread draw-off tube of an open-end spinning device, through which the spun thread F is drawn off continuously. The thread is drawn off by a pair of draw rollers 2, 20.

Von der Spulvorrichtung ist lediglich eine Spulenhülse 3 mit einem Spulenteller 4 und ihre Antriebswalze 30 gezeigt. Die Spulenhülse 3 ist jedoch in bekannter Weise von zwei Spulenarmen gehalten, die sie gegen die Antriebswalze 30 drücken. In jedem der beiden Spulenarme ist ein Spulenteller 4 drehbar gelagert, von denen der gezeigte Spulenteller 4 mehrere als Fadenfangvorrichtung dienende Schlitze 40 aufweist. Diese Schlitze 40 reichen vom äußerden Umfang des Spulentellers in radialer Richtung bis auf eine Zentrierschulter 41, die in das Innere der Spulenhülse eingreift und sie damit zentriert und in radialer Richtung festhält. In Figur 3 sind diese Schlitze gerade gezeigt und schließen mit der Umfangstangente des Spulentellers 4 an ihrem Eintritt einen spitzen Winkel p( ein. Sie können jedoch auch bogenförmig ausgebildet sein, so daß sie in etwa radialer Richtung auf die innere Zentrierschulter 41 münden.From the winding device, only a bobbin tube 3 with a bobbin plate 4 and its drive roller 30 are shown. However, the bobbin tube 3 is held in a known manner by two bobbin arms which press it against the drive roller 30. In each of the two bobbin arms a bobbin 4 is rotatably supported, of which the bobbin 4 shown has a plurality of slots 40 serving as a thread catching device. These slots 40 extend from the outer circumference of the coil plate in the radial direction to a centering shoulder 41 which engages in the interior of the coil sleeve and thus centers it and holds it in the radial direction. These slots are shown straight in FIG. 3 and form an acute angle p (with the circumferential tangent of the coil plate 4 at their entrance. However, they can also be designed in an arc shape so that they open into the inner centering shoulder 41 in an approximately radial direction.

Die Handhabung und Führung des Fadens F vor und bei seiner Überführung zur Spulenhülse 3 entspricht den in der EP-OS 0 069 205 beschriebenen Vorgängen. Der dort in Figur 2 gezeigte Fadenführer 5 entspricht der Fadenführungsgabel 5 in Figur 1, die vor der Spulenhülse 3 angeordnet ist. Ein Unterschied besteht lediglich darin, daß die Fadenführungsgabel 5 nicht verschiebbar ist. Ferner entspricht der Mündung 40 der Fadensaugvorrichtung 4 in der EP-OS 0 069 205 die mit einer nicht gezeigten Unterdruckquelle verbundene rohrförmige Fadensaugvorrichtung 6, die in Nähe ihrer Mündung eine Fadentrennvorrichtung 60 aufweist. Diese Trennvorrichtung kann innerhalb des Rohres oder, wie in der EP-OS 0 069 205 gezeigt, auch außerhalb des Rohres angeordnet sein. Die Fadenführungsgabel 5 ist ortsfest angeordnet.The handling and guidance of the thread F before and during its transfer to the bobbin tube 3 corresponds to the processes described in EP-OS 0 069 205. The thread guide 5 shown there in FIG. 2 corresponds to the thread guide fork 5 in FIG. 1, which is arranged in front of the bobbin tube 3. The only difference is that the thread guide fork 5 cannot be moved. Furthermore, the mouth 40 of the thread suction device 4 in EP-OS 0 069 205 corresponds to the tubular thread suction device 6 connected to a vacuum source, not shown, which has a thread separation device 60 in the vicinity of its mouth. This separating device can be arranged inside the tube or, as shown in EP-OS 0 069 205, also outside the tube. The thread guide fork 5 is arranged in a stationary manner.

Nahe der Außenseite des Spulentellers 4 ist ein erstes Fadenführungselement 7 vorgesehen, während ein zweites Fadenführungselement 8 auf der der Spulenhülse zugewandten Seite des Spulentellers 4 angeordnet ist. Beide Fadenführungselemente 7 und 8 sind an der Fadensaugvorrichtung 6 schwenkbar befestigt, so daß sie den sich von dem Fadenabzugsrohr 1 der Spinnvorrichtung bis zu der Fadensaugvorrichtung 6 erstreckenden Faden ergreifen können.A first thread guide element 7 is provided near the outside of the bobbin plate 4, while a second thread guide element 8 is arranged on the side of the bobbin plate 4 facing the bobbin tube. Both thread guide elements 7 and 8 are pivotally attached to the thread suction device 6 so that they can grip the thread extending from the thread take-off tube 1 of the spinning device to the thread suction device 6.

Die rohrförmige Fadensaugvorrichtung 6 ist aus einer nicht gezeigten Fadenaufnahmestellung in die Stellung gemäß Figur 1 schwenkbar, in der sich ihre Mündung seitlich von der Außenseite des Spulentellers 4, jedoch in Bezug auf die Fadenlaufrichtung noch vor dieser befindet. In der Fadensaugvorrichtung 6 ist eine Fadentrennvorrichtung 60 ortsfest angeordnet, zweckmäßig in Nähe ihrer Mündung, um die Länge des abgeschnittenen Fadenendes in Grenzen zu halten. Dadurch das die beiden Fadenführungselemente 7 und 8 an der Fadensaugvorrichtung 6 befestigt sind, können diese mit der Fadensaugvorrichtung aus einer Ausgangsstellung in die Nähe des Spulentellers und wieder zurück bewegt werden.The tubular thread suction device 6 can be pivoted from a thread take-up position, not shown, into the position according to FIG. 1, in which its mouth is located laterally from the outside of the bobbin plate 4, but still in front of the thread running direction thereof. In the thread suction device 6, a thread separating device 60 is arranged in a stationary manner, expediently in the vicinity of its mouth, in order to keep the length of the thread end cut off within limits. This makes the two threads guide elements 7 and 8 are attached to the thread suction device 6, these can be moved with the thread suction device from an initial position in the vicinity of the bobbin and back again.

Die Fadenführungselemente 7 und 8 sind zusammen mit der Fadensaugvorrichtung 6 und der Fadenführungsgabel 5 auf einem verfahrbaren Wartungswagen angeordnet und werden entsprechend vor der Aufwickelvorrichtung einer jeden Spinnstelle in Position gebracht, um das Auswechseln einer vollen Spule gegen eine Leerhülse durchzuführen und den aus der Spinnvorrichtung austretenden Faden auf diese Leerhülse zu überführen.The thread guide elements 7 and 8 are arranged together with the thread suction device 6 and the thread guide fork 5 on a movable maintenance carriage and are accordingly positioned in front of the winding device of each spinning station in order to carry out the replacement of a full bobbin with an empty tube and the thread emerging from the spinning device to transfer to this empty tube.

Nachdem die volle Spule entfernt und eine Leerhülse 3 zum Bewickeln eingelegt worden ist, läuft der von den Abzugswalzen 2, 20 kontinuierlich aus dem Fadenabzugsrohr 1 gezogene Faden F zunächst in die Fadensaugvorrichtung 6, wobei er auf seinem mit gestrichelter Linie gekennzeichneten Weg dorthin in der Fadenführungsgabel 5 geführt ist. Die Fadenführungsgabel 5 befindet sich zu diesem Zeitpunkt in der Radialebene der Stirnfläche des Spulentellers4. Anschließend werden das erste Fadenführungselement 7 und das zweite Fadenführungselement 8 in den Fadenweg bewegt, so daß der Faden ergriffen wird und, gehalten durch diese beiden Fadenführungselemente, der Fadenfangvorrichtung 40 des Spulentellers 4 so vorgelegt wird, daß dieses Fadenstück annähernd parallel zur Hülsenachse ausgerichtet ist. Je paralleler die Vorlage erreicht wird, um so exakter kann der Faden gefangen und in einen der Schlitze 40 hineingeführt werden, außerdem ergeben sich dadurch die kürzesten Fadenenden. Im Moment der Vorlage und des Erfassens des Fadens durch die Fadenfangvorrichtung 40 muß das sich in die Fadensaugvorrichtung 6 erstreckende Fadenstück abgetrennt werden. Zu diesem Zweck wird durch die Bewegung des ersten Fadenführungselementes 7 nicht nur der Faden vorgelegt, sondern gleichzeitig das sich in die Fadensaugvorrichtung 6 erstreckende Fadenstück in den Bereich einer Fadentrennvorrichtung 60 gebracht, die möglichst nahe der Ansaugöffnung der Fadensaugvorrichtung 6 angeordnet ist. Die Anordnung der Fadentrennvorrichtung 60 kann gemäß der EP-OS 0 069 205 auf der Fadensaugvorrichtung 6 oder auch, wie in Figur 1 schematisch gezeigt, in der Fadensaugvorrichtung 6 angeordnet sein.After the full bobbin has been removed and an empty tube 3 has been inserted for winding, the thread F drawn continuously by the take-off rollers 2, 20 from the thread take-off tube 1 first runs into the thread suction device 6, where it travels there in the thread guide fork on the path indicated by the broken line 5 is performed. The thread guide fork 5 is at this time in the radial plane of the end face of the bobbin plate 4. Then the first thread guide element 7 and the second thread guide element 8 are moved into the thread path so that the thread is gripped and, held by these two thread guide elements, the thread catching device 40 of the bobbin plate 4 is placed in such a way that this thread piece is aligned approximately parallel to the sleeve axis. The more parallel the template is reached, the more precisely the thread can be caught and inserted into one of the slots 40, and the shortest thread ends also result. At the moment of the presentation and the detection of the thread by the thread catching device 40, the thread piece extending into the thread suction device 6 must be cut off the. For this purpose, not only is the thread presented by the movement of the first thread guide element 7, but at the same time the thread piece extending into the thread suction device 6 is brought into the area of a thread separation device 60 which is arranged as close as possible to the suction opening of the thread suction device 6. According to EP-OS 0 069 205, the arrangement of the thread separation device 60 can be arranged on the thread suction device 6 or, as shown schematically in FIG. 1, in the thread suction device 6.

Wie oben bereits erwähnt, wird gleichzeitig mit dem ersten Fadenführungselement 7 auch das zweite Fadenführungselement 8 in den Fadenweg bewegt, so daß sich der zwischen dem ersten Fadenführungselement 7 und dem zweiten Fadenführungselement 8 liegende Fadenabschnitt in einer Stellung befindet, in der er die Drehebene der Fadenfangschlitze 40 auf dem Umfang des mit der Spulenhülse 3 umlaufenden Spulentellers 4 kreuzt, und dabei von einem dieser Schlitze eingefangen und von dem Spulenteller mitgenommen wird. In Fortführung seiner Vorlagebewegung wird nun das zweite Fadenführungselement 8 für das Aufwinden der Reservewindung vom Spulenteller 4 weg in Richtung zur Hülsenmitte und wieder zum Spulenteller hin bewegt. Dadurch wird eine Reservewicklung erreicht, die durch die Rückwärtsbewegung des Fadenführungselementes 8 nochmals überwickelt wird, so daß das sich zum Spulenteller nach außen erstreckende Fadenende durch diese Überwicklung gesichert wird. Durch seine Rückwärtsbewegung bis in seine Ausgangslage zurück bewegt sich das zweite Fadenführungselement 8 schließlich aus dem Fadenlauf heraus und gibt somit den Faden wieder frei, der nunmehr nur noch durch die Fadenführungsgabel 5 in der Radialebene der Stirnfläche des Spulentellers 4 geführt ist. Eine Abweisschulter 42 (Figur 3a) am Spulenteller 4, die auf der der Spulenhülse 3 zugewandten Seite des Spulentellers 4 liegt, stellt sicher, daß die Lage der Fadenreservewicklung auf der Spulenhülse exakt eingehalten wird. Die Bildung der Fadenreservewicklung und deren Absicherung ist nunmehr beendet und die Fadenführungsgabel 5 gibt, wie in der EP-OS beispielsweise beschrieben, den Faden an den Changierfadenführer zur Bewicklung der Spule ab.As already mentioned above, the second thread guide element 8 is also moved into the thread path at the same time as the first thread guide element 7, so that the thread section lying between the first thread guide element 7 and the second thread guide element 8 is in a position in which it rotates the plane of the thread catch slots 40 crosses on the circumference of the bobbin plate 4 rotating with the bobbin tube 3, and is thereby captured by one of these slots and carried along by the bobbin plate. In continuation of its original movement, the second thread guide element 8 is now moved away from the bobbin plate 4 in the direction of the center of the bobbin and back towards the bobbin plate for winding up the reserve winding. This achieves a reserve winding, which is wound again by the backward movement of the thread guide element 8, so that the thread end extending outward to the bobbin plate is secured by this winding. Through its backward movement back to its starting position, the second thread guide element 8 finally moves out of the thread path and thus releases the thread, which is now only guided through the thread guide fork 5 in the radial plane of the end face of the bobbin plate 4. A deflecting shoulder 42 (FIG. 3a) on the coil plate 4, which lies on the side of the coil plate 4 facing the coil sleeve 3 sure that the position of the thread reserve winding on the bobbin tube is exactly maintained. The formation of the thread reserve winding and its protection is now complete and the thread guide fork 5, as described in the EP-OS, for example, transfers the thread to the traversing thread guide for winding the bobbin.

Trotz der Klemmung der Spulenhülse zwischen den Spulentellern entsteht beim Bewickeln der Spule eine Relativbewegung zwischen Spulenteller und Spulenhülse, wobei der Spulenteller der Hülse leicht voreilt. Dadurch wird das in einem der Schlitze 40 hängende freie Fadenende aus diesem Schlitz herausgezogen, herumgeschleudert und ausgefranst oder auch unter die Spulenwicklung gebracht, so daß es für das Anknüpfen der nächsten Spule bei der Weiterverarbeitung verlorengeht. Überraschenderweise hat es sich gezeigt, daß bei der erfindungsgemäßen Ausbildung der Schlitze dieses Verlorengehen auf einfache Weise vermieden wird. Der Faden rutscht in den Schlitzen, die jetzt bis auf die innere Zentrierschulter 41 reichen, an der Stirnfläche der Spulenhülse vorbei in das Innere und verbleibt dort während des gesamten Spulvorganges geschützt. Beim Herausnehmen der Spule aus der Spulentellerhalterung erhält man so ein unbeschädigtes Fadenende, mit dem die Reservewindung abgezogen werden kann und somit für das Anknüpfen der nächsten Spule bei der Weiterverarbeitung einwandfrei zur Verfügung steht.Despite the bobbin tube being clamped between the bobbin plates, a relative movement occurs between the bobbin plate and the bobbin tube when the bobbin is wound, the bobbin plate leading the sleeve slightly. As a result, the free thread end hanging in one of the slots 40 is pulled out of this slot, flung around and frayed or brought under the bobbin winding, so that it is lost for the connection of the next bobbin during further processing. Surprisingly, it has been found that in the formation of the slots according to the invention, this loss is avoided in a simple manner. The thread slips in the slots, which now extend to the inner centering shoulder 41, past the end face of the bobbin tube into the interior and remains protected there during the entire winding process. When you take the bobbin out of the bobbin holder, you get an undamaged end of the thread with which the reserve thread can be pulled off and is thus perfectly available for connecting the next bobbin during further processing.

Das Aufwinden der Fadenreserve erfolgt vorzugsweise mit Spinnspannung, indem der Faden F beispielsweise aus der Klemmlinie des Abzugswalzenpaares ausgeworfen oder, wie in Figur 1 gezeigt, die Druckwalze 2 des Abzugswalzenpaares um einen Abstand a von ihrer Antriebswalze abgehoben wird. Die Spinnspannung stellt sich, daß die Fadenreserve genügend straff auf die Hülse aufgewunden wird.The thread reserve is preferably wound up with spinning tension, in that the thread F is ejected, for example, from the clamping line of the pair of draw-off rollers or, as shown in FIG. 1, the pressure roller 2 of the pair of draw-off rollers is lifted by a distance a from its drive roller. The spinning tension turns out that the thread reserve is wound onto the sleeve sufficiently tightly.

Claims (9)

1. Vorrichtung zum Bilden einer Fadenreservewicklung mit einem mit der Spulenhülse umlaufenden Spulenteller, der mit einer Zentrierschulter in den inneren Durchmesser der Spulenhülse eingreift und eine Fadenfangvorrichtung aufweist, dadurch gekennzeichnet , daß am Umfang des Spulentellers (4) Schlitze (40) angeordnet sind, welche in radialer Richtung bis auf die innere Zentrierschulter (41) reichen.1. Apparatus for forming a thread reserve winding with a spool plate rotating with the bobbin tube, which engages with a centering shoulder in the inner diameter of the bobbin tube and has a thread catching device, characterized in that slots (40) are arranged on the circumference of the bobbin plate (4), which extend in the radial direction up to the inner centering shoulder (41). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schlitze (40) gerade oder bogenförmig ausgebildet sind.2. Device according to claim 1, characterized in that the slots (40) are straight or curved. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß die Schlitze (40) mit der Umfangstangente des Spulentellers (4) an ihrem Eintritt einen spitzen Winkel (α) bilden.3. Apparatus according to claim 1 or 2, characterized in that the slots (40) with the circumferential tangent of the coil plate (4) form an acute angle (α) at their entry. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß in den sich von einem Fadenabzugsrohr (1) zu einer Fadensaugvorrichtung (6) erstreckenden Fadenweg ein erstes und ein zweites Fadenführungselement (7, 8) bewegbar sind, die den Faden der Fadenfangvorrichtung annähernd parallel zur Hülsenachse vorlegen.4. Device according to one of claims 1 to 3, characterized in that in the extending from a thread take-off tube (1) to a thread suction device (6) thread path, a first and a second thread guide element (7, 8) are movable, which the thread Place the thread catcher approximately parallel to the core axis. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das erste Fadenführungselement (7) bei der Fadenvorlage gleichzeitig das sich in die Fadensaugvorrichtung (6) erstreckende Fadenstück in den Bereich einer Fadentrennvorrichtung (60) bringt.5. The device according to claim 4, characterized in that the first thread guide element (7) in the thread pattern simultaneously brings the piece of thread extending into the thread suction device (6) into the area of a thread separating device (60). 6. Vorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet , daß das zweite Fadenführungselement (8) in Fortführung seiner Vorlagebewegung den Faden für das Aufwinden der Reservewindungen vom Spulenteller weg in Richtung zur Hülsenmitte und wieder zum Spulenteller hin bewegt.6. Apparatus according to claim 4 or 5, characterized in that the second thread guide element (8) in continuation of its original movement moves the thread for the winding of the reserve windings away from the bobbin plate towards the center of the tube and back towards the bobbin plate. 7. Vorrichtung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die beiden Fadenführungselemente (7, 8) an der Fadensaugvorrichtung (6) befestigt sind.7. Device according to one of claims 4 to 6, characterized in that the two thread guide elements (7, 8) on the thread suction device (6) are attached. 8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die beiden Fadenführungselemente (7, 8) mit der Fadensaugvorrichtung (6) aus einer Ausgangsstellung in die Nähe des Spulentellers (4) und wieder zurück bewegbar sind.8. The device according to claim 7, characterized in that the two thread guide elements (7, 8) with the thread suction device (6) from an initial position in the vicinity of the bobbin plate (4) and back can be moved. 9. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß in der Radialebene der Stirnfläche des Spulentellers (4) eine Fadenführungsgabel (5) vorgesehen ist, über den sich der Faden in die Fadensaugvorrichtung (6) erstreckt, und daß das zweite Fadenführungselement (8) den Faden aus der Radialebene des Spulentellers (4) zur Hülsenmitte auslenkt und ihn mit seiner Rückbewegung in die Ausgangslage wieder freigibt, so daß der Faden durch die Fadenführungsgabel (5) in der Radialebene der Stirnfläche des Spulentellers (4) geführt ist.9. The device according to claim 6, characterized in that a thread guide fork (5) is provided in the radial plane of the end face of the bobbin plate (4), over which the thread extends into the thread suction device (6), and that the second thread guide element (8) deflects the thread from the radial plane of the bobbin plate (4) to the center of the tube and releases it again with its return movement to the starting position, so that the thread is guided through the thread guide fork (5) in the radial plane of the end face of the bobbin plate (4).
EP84114816A 1983-12-09 1984-12-05 Device for forming a yarn tail winding Expired EP0148419B1 (en)

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DE19833344645 DE3344645A1 (en) 1983-12-09 1983-12-09 DEVICE FOR FORMING A THREAD RESERVE DEVELOPMENT
DE3344645 1983-12-09

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EP0148419A1 true EP0148419A1 (en) 1985-07-17
EP0148419B1 EP0148419B1 (en) 1987-07-22

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CZ (1) CZ278748B6 (en)
DE (2) DE3344645A1 (en)
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DE2705392A1 (en) 1977-02-09 1978-08-10 Luwa Ag METHOD AND DEVICE FOR CONNECTING A YARN AND FORMING A THREAD RESERVE ON A THREAD TUBE
EP0069205A1 (en) 1981-06-13 1983-01-12 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Method and device for exchanging a full bobbin for an empty tube in a winding unit of an open-end spinning mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5511734A (en) * 1992-04-08 1996-04-30 W. Schlafhorst Ag & Co. Method and apparatus for severing the free yarn end of a yarn reserve winding
EP1055630A2 (en) * 1999-05-22 2000-11-29 Saurer-Allma GmbH Method and apparatus for winding a yarn with a subsidiary winding on a bobbin
EP1055630A3 (en) * 1999-05-22 2001-05-30 Saurer-Allma GmbH Method and apparatus for winding a yarn with a subsidiary winding on a bobbin
WO2020254598A1 (en) * 2019-06-19 2020-12-24 Maschinenfabrik Rieter Ag Method of handling yarn during replacement of a bobbin with an empty tube at a spinning station of a yarn manufacturing textile machine and a device for performing it

Also Published As

Publication number Publication date
CZ278748B6 (en) 1994-06-15
SK278044B6 (en) 1995-11-08
EP0148419B1 (en) 1987-07-22
DE3464887D1 (en) 1987-08-27
DE3344645C2 (en) 1992-10-29
DE3344645A1 (en) 1985-06-20
US4687148A (en) 1987-08-18
SK945084A3 (en) 1995-11-08
CZ945084A3 (en) 1994-03-16

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