EP1285983A1 - Servicing device for a textile machine which produces cross-wound bobbins - Google Patents

Servicing device for a textile machine which produces cross-wound bobbins Download PDF

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Publication number
EP1285983A1
EP1285983A1 EP02012291A EP02012291A EP1285983A1 EP 1285983 A1 EP1285983 A1 EP 1285983A1 EP 02012291 A EP02012291 A EP 02012291A EP 02012291 A EP02012291 A EP 02012291A EP 1285983 A1 EP1285983 A1 EP 1285983A1
Authority
EP
European Patent Office
Prior art keywords
thread
centering
service unit
guide plate
cutting 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.)
Withdrawn
Application number
EP02012291A
Other languages
German (de)
French (fr)
Inventor
Heinz-Josef Peuker
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
W Schlafhorst AG and Co
Saurer 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 W Schlafhorst AG and Co, Saurer GmbH and Co KG filed Critical W Schlafhorst AG and Co
Publication of EP1285983A1 publication Critical patent/EP1285983A1/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/013—Carriages travelling along the machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B65H67/0405—Arrangements for removing completed take-up packages or for loading an empty core
    • B65H67/0417—Arrangements for removing completed take-up packages or for loading an empty core for loading an empty core
    • B65H67/0422—Arrangements for removing completed take-up packages or for loading an empty core for loading an empty core for loading a starter winding, i.e. a spool core with a small length of yarn wound on it; preparing the starter winding
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/48—Piecing arrangements; Control therefor
    • D01H4/50—Piecing arrangements; Control therefor for rotor spinning
    • 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 service unit for a Textile machine producing cross-wound bobbins according to the preamble of claim 1.
  • auxiliary thread transport device has a thread delivery tube that can be pivoted into different working positions.
  • a thread cutting device is integrated into the thread delivery tube at a distance from its mouth.
  • the thread delivery tube can be defined either connected to a compressed air connection or to a suction air connection so that an auxiliary thread can be provided as well as disposed of by the auxiliary thread transport device.
  • the thread laying device consists essentially of a pivoting thread guide and one Thread retention element, the thread guide plate a Thread guide contour with a thread guide notch and one Has thread laying slot.
  • Thread guide plate that which can be acted upon by a thrust piston gear Thread guide plate is supported in its end position from the inside one of the coil frame arms.
  • the Coil frame acted on something in the sense of "open” what in the worst case can lead to the fact that between the Coil frame arms in rotatable sleeve plates via friction locking held empty sleeve is insufficiently clamped so that it between sleeve and sleeve plate for a relative movement can come.
  • Another disadvantage of this known device is the position of the thread cutting device. This means that the arrangement of the thread cutting device within the thread delivery tube provides a relatively large distance from the delivery tube mouth and thus also to the thread catching devices of the tube plate, with the result that after winding the thread start reserve, a relatively long thread end remains, which is very difficult to close is secure and often leads to the fact that the thread start reserve is destroyed again during the winding process.
  • This known service unit has a swivel arm on which a thread delivery tube and a so-called manipulator with a head element which can be displaced in the direction of the bobbin frame are arranged.
  • the manipulator acts during the thread transfer with a device arranged at the head end of a baffle arranged on the bobbin frame in the sense of "closing the frame” and thereby reliably prevents that there can be a harmful relative movement between the thread catcher arranged on the tube plate and the empty tube during the thread transfer.
  • the empty sleeve is fixed between the sleeve plates with such a pressing force that it is ensured that the thread catching device arranged on the sleeve plate rotates in synchronism with the empty sleeve.
  • a device arranged on the head element in the form of a thread guide edge also ensures that the thread produced in the open-end spinning device is first transferred to a thread catching device arranged on the tube plate and the collected thread is then deposited in a defined manner on the empty tube.
  • Thread cutting device is closer to the mouth of the Thread delivery tube has been brought up, the Thread cutting device is still in that Delivery tube integrated, so that the above problems with unsecured thread ends not described could be completely eliminated.
  • the The invention is therefore based on the object of a service unit to improve in that a correct application of the thread produced in the open-end spinning device empty tube held in the coil frame, in particular a secure one Setting the thread end is guaranteed.
  • the embodiment of the invention has the particular advantage that the thread that is to be placed on an empty tube that is held between the tube plates of a bobbin frame is separated immediately next to the thread catching devices of the tube plate. This creates a relatively short thread end, which is also largely overwound by the thread start reserve and is thus securely fixed on the sleeve.
  • the centering and guide plate which carries the thread cutting device according to the invention, by means of a thrust piston gear in an operating position right next to the pod, which the Has thread catcher, can be retracted. In this operating position, the centering and Guide plate with a centering gap on a centering approach Bobbin frame, so that the thread cutting device is always exact is positioned.
  • Thread cutting device in an advantageous embodiment hook-shaped base body partially open towards the inside.
  • a fixed cutting edge is integrated in the base body, one, viewed in side view, inclined at 45 ° Has cutting edge.
  • Such a design ensures, on the one hand, that the thread produced in the open-end spinning device, initially still sucked off via the thread delivery tube, as soon as it has been gripped by the thread catching device of the core plate, is pulled over the cutting edge and thereby separated.
  • such an arrangement of the cutting edge ensures that the operating personnel cannot accidentally come into contact with the cutting edge and injure themselves in the process.
  • Open-end spinning machines of this type generally have a multiplicity of work stations 2 of the same type, each of which is equipped with a spinning device 3 and a winding device 4.
  • the spinning device 3 the sliver 6 placed in a spinning can 5 is spun into a thread 7, which is then wound up on the winding device 4 to form a cheese 8.
  • the spooling devices 4 have a spool frame 9 for rotatably holding a sleeve 10 and a spool drum 11 for driving the sleeve 10 or the cheese 8.
  • the mostly double-row open-end spinning machines 1 have between their rows of jobs often a coil transport device 12, via the Completed packages 8 are disposed of.
  • a service unit 16 a so-called piecing carriage, is arranged on or on the spinning machine 1, movable on guide rails 13, 14 and support rails 15.
  • the drive 17 of the service unit 16 has rollers 18 or support wheels 19.
  • the service unit 16 is supplied with electrical energy via a drag chain or, as indicated in FIG. 1, via a sliding contact device 20.
  • Such service units 16 patrol along the work stations 2 of the open-end spinning machine 1 and intervene automatically when there is a need for action at one of the work stations 2.
  • Such a need for action exists, for example, when one of the workplaces 2 has broken a thread or if a cheese 8 at one of the workstations has reached the prescribed diameter and against a Empty sleeve 10 must be replaced.
  • the service unit 16 runs to the concerned job 2, positions itself there and searches in the case of a "normal" thread break with its thread search nozzle 21 the cracked, on the peripheral surface of the package 8 Accumulated thread end.
  • FIG. 2 schematically shows a service unit 16 with its most important thread handling elements necessary for carrying out the aforementioned operating cases.
  • Service unit 16 includes, among other things, a pivotally mounted thread search nozzle 21, the suction slot of which can be placed on the outer circumference of the package 8 can accommodate torn thread ends.
  • the service unit 16 is also, as is known, equipped with a thread catcher 25, a thread puller 26, a thread feeder 27 with feed tongs 28 and thread separating device 29 and with a controllable thread take-off device consisting of a drivable take-off roller 30 and a pivotably arranged pressure roller 31.
  • a frame opener 32, a pressure lever 33 and an auxiliary thread delivery and disposal device 34 are installed in the service unit 16 as further operating elements.
  • the auxiliary thread delivery and disposal device 34 has in this case, for example, via a pipe system 35 which has a flexible connecting element 36, for example a hose, with one that can be swiveled into different positions Delivery tube 37 is connected.
  • the delivery tube 37 is in turn fixed to a swivel arm 38 which is about a swivel axis 39 is pivotally defined.
  • the pipe system 35 into which an auxiliary thread 45 drawn off from a supply spool 44 can be fed via a thread feed mechanism 43, has one in the entrance area Suction air connection 40, which can be activated via a valve 41, and a compressed air connection 46, which can be activated via a valve 47. Furthermore, a first thread separating device 42 can be arranged in the upper region of the pipe system 35.
  • the thread cutting device 51 according to the invention is shown in FIGS Figures 3 to 5 shown in more detail.
  • FIG. 3 shows a side view of the front part of a bobbin frame arm of the bobbin frame 9, the thread delivery tube 37 and the centering and guide plate 50 carrying the thread cutting device 51.
  • the end of the bobbin frame arm has a centering shoulder 55. It is also on the coil frame arm to a Rotation axis 60 freely rotatable, a sleeve plate 52 rotatably mounted, which is equipped on its outer circumference with a thread catching device 53.
  • the centering and guide plate 50 is fixed on the piston rod 49 of a thrust piston gear 48, and can be moved into the operating position I shown by means of this thrust piston gear 48.
  • the centering and guide plate 50 carries on its back the thread cutting device 51 according to the invention, which essentially consists of a base body 56 and a cutting edge 57.
  • the base body 56 is hook-shaped, that is to say the base body 56 is partially open at the bottom.
  • the cutting edge 57 is fixed within the base body opening, the cutting edge 58 of which, as shown, extends at an angle of approximately 45 °.
  • FIG. 5 shows that the centering and guide plate 50 has a thread guide gap 59 in addition to a centering gap 54.
  • the thread 7 guided in the thread guide gap 59 is guided to create a thread start reserve by lateral displacement of the centering and guide plate 50 such that the thread end cut by the thread cutting device 51 is wound over and is thereby fixed to the sleeve 10.
  • the service unit 16 runs to the relevant work station 2, positions itself there and changes the full package 8 against an empty tube 10. The service unit 16 then spins the spinning device 3 of the relevant work station 2 again.
  • the swivel arm 38 carrying the delivery tube 37 of the auxiliary thread delivery device 34 is in a rear position (not shown) for transferring an auxiliary thread 45 to the suction nozzle 21.
  • the mouth of the delivery tube 37 is so in the region of the suction slot of the suction nozzle 21 that an auxiliary thread 45 delivered via the auxiliary thread delivery device 34 and emerging from the mouth of the delivery tube 37 can be immediately grasped by the suction nozzle 21.
  • the pivot arm 38 is then pivoted into its front position, which is indicated in FIG. 2. This creates a thread chord (not shown) which, as is known and therefore not explained in more detail, is gripped by the thread handling elements of the service unit 16 described above.
  • the thread is then, as usual, prepared and spun in the open-end spinning device 3 to a fiber ring running there.
  • the thread 7 produced in the open-end spinning device 3 is first sucked off via the thread feed tube 37 following the auxiliary thread 45.
  • the mouth of the thread delivery tube 37 is at this point in the area of the bobbin frame 9. That is, the mouth of the thread delivery tube 37 is positioned somewhat offset above the axis of rotation 60 of the bobbin frame arm.
  • a thrust piston gear 48 arranged on the swivel arm 38 or the centering and guide plate 51 arranged on the piston rod 49 of the thrust piston gear 48 the thread 7 is brought into the area of a thread catching device 53 arranged on the sleeve plate 52 of the bobbin frame 9 and is grasped by the latter.
  • the thread catching device 53 rotating in the direction R then ensures that the thread 7 held in the thread catching device 53 slides over the cutting edge 58 of the thread cutting device 51 and is thereby cut.
  • a (not shown) push piston mechanism which is arranged parallel to the axis of rotation 60, provides for a lateral displacement of the previously slightly raised centering and guide plate 50 and thereby for the creation of a (not illustrated) thread start reserve. That is, the thread 7 guided in the thread guide gap 59 of the centering and guide plate 50 is wound with lateral displacement on the empty tube 10 so that the thread reserve thus created winds over the thread end and thereby secures it on the tube 10.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

The thread cutter (51) is arranged on a metal centering- and guidance plate (50), where it is positioned immediately adjacent to the thread interceptor (53) of the freely-rotating bobbin plate (52) on the spooling frame (9) in the relevant working location (2). Preferred features: The centering and guidance plate is moved into the working position using a thrust piston drive, where a centering gap of the guidance plate corresponds with a centering projection (55) on the spooling frame, hence positioning the thread cutter precisely. The thread cutter has a hooked, partly-open main body (56), into which a fixed cutter (57) is integrated. The cutter has a blade (58) inclined at 45 degrees in side view, towards the center of the main body. The centering and guidance plate carrying the thread cutter near a centering gap, has a further thread guidance gap.

Description

Die Erfindung betrifft ein Serviceaggregat für eine Kreuzspulen herstellende Textilmaschine gemäß dem Oberbegriff des Anspruches 1.The invention relates to a service unit for a Textile machine producing cross-wound bobbins according to the preamble of claim 1.

Serviceaggregate sind in der Textilindustrie in verschiedenen Ausführungsformen bekannt und seit langem mit Erfolg im Einsatz.Service units are different in the textile industry Embodiments known and have long been successful in Commitment.

In der DE 44 43 818 A1 ist beispielsweise ein Serviceaggregat beschrieben, das neben einer Reihe Fadenhandhabungselemente zum Zurückholen und Wiederanspinnen eines auf eine Auflaufspule aufgelaufenden Fadenendes noch eine sogenannte Hilfsfadentransporteinrichtung aufweist. Die Hilfsfadentransporteinrichtung verfügt dabei über ein Fadenlieferrohr, das in verschiedene Arbeitsstellungen einschwenkbar ist.
In das Fadenlieferrohr ist, im Abstand zu dessen Mündung, eine Fadenschneideinrichtung integriert.
Das Fadenlieferrohr kann definiert entweder auf einen Druckluftanschluß oder auf einen Saugluftanschluß geschaltet werden so daß durch die Hilfsfadentransporteinrichtung sowohl ein Hilfsfaden bereitgestellt als auch entsorgt werden kann.DE 44 43 818 A1, for example, describes a service unit which, in addition to a series of thread handling elements for retrieving and re-spinning a thread end running onto a package, also has a so-called auxiliary thread transport device. The auxiliary thread transport device has a thread delivery tube that can be pivoted into different working positions.
A thread cutting device is integrated into the thread delivery tube at a distance from its mouth.
The thread delivery tube can be defined either connected to a compressed air connection or to a suction air connection so that an auxiliary thread can be provided as well as disposed of by the auxiliary thread transport device.

An der Lieferrohrhalterung ist außerdem eine Fadenverlegeeinrichtung angeordnet, die eine kontrollierte Übergabe des in der Offenend-Spinnvorrichtung produzierten Fadens an eine im Bereich eines der Hülsenteller des Spulenrahmens angeordnete Fadenfangeinrichtung ermöglicht. Die Fadenverlegeeinrichtung besteht dabei im wesentlichen aus einem schwenkbar gelagerten Fadenleitblech sowie einem Fadenrückhalteelement, wobei das Fadenleitblech eine Fadenführungskontur mit einer Fadenführungskerbe und einen Fadenverlegeschlitz aufweist.There is also a on the delivery tube bracket Thread laying device arranged that a controlled Handover of that produced in the open-end spinning device Thread to one in the area of one of the sleeve plates of the Coil frame arranged thread catcher allows. The thread laying device consists essentially of a pivoting thread guide and one Thread retention element, the thread guide plate a Thread guide contour with a thread guide notch and one Has thread laying slot.

Das über ein Schubkolbengetriebe beaufschlagbare Fadenleitblech stützt sich in seiner Endlage von innen an einem der Spulenrahmenarme ab. Durch dieses Abstützen wird der Spulenrahmen etwas im Sinne "öffnen" beaufschlagt, was im ungünstigsten Fall dazu führen kann, daß die zwischen den Spulenrahmenarmen in drehbaren Hülsentellern über Reibschluß gehaltene Leerhülse ungenügend geklemmt ist, so daß es zwischen Hülse und Hülsenteller zu einer Relativbewegung kommen kann. Eine solche Relativbewegung zwischen Hülse und Hülsenteller beziehungsweise zwischen der Hülse und der am Hülsenteller angeordneten Fadenfangeinrichtung ist während der Fadenübergabe höchst unerwünscht.That which can be acted upon by a thrust piston gear Thread guide plate is supported in its end position from the inside one of the coil frame arms. By this support the Coil frame acted on something in the sense of "open" what in the worst case can lead to the fact that between the Coil frame arms in rotatable sleeve plates via friction locking held empty sleeve is insufficiently clamped so that it between sleeve and sleeve plate for a relative movement can come. Such a relative movement between the sleeve and Sleeve plate or between the sleeve and the am Thread plate arranged during the Thread transfer highly undesirable.

Nachteilig bei dieser bekannten Einrichtung ist außerdem die Lage der Fadenschneideinrichtung.
Das heißt, durch die Anordnung der Fadenschneideinrichtung innerhalb des Fadenlieferrohres ist ein relativ großer Abstand zur Lieferrohrmündung und damit auch zu den Fadenfangeinrichtungen des Hülsentellers gegeben, mit der Folge, daß nach dem Wickeln der Fadenanfangsreserve ein relativ langes Fadenende übrig bleibt, das nur sehr schwer zu sichern ist und oft dazu führt, daß die Fadenanfangsreserve bereits während des Spulprozesses wieder zerstört wird. Another disadvantage of this known device is the position of the thread cutting device.
This means that the arrangement of the thread cutting device within the thread delivery tube provides a relatively large distance from the delivery tube mouth and thus also to the thread catching devices of the tube plate, with the result that after winding the thread start reserve, a relatively long thread end remains, which is very difficult to close is secure and often leads to the fact that the thread start reserve is destroyed again during the winding process.

Durch die DE 199 17 969 A1 ist außerdem eine Weiterentwicklung des vorbeschriebenen Serviceaggregates bekannt.
Dieses bekannte Serviceaggregat verfügt über einen Schwenkarm, an dem ein Fadenlieferrohr sowie ein sogenannter Manipulator mit einem in Richtung des Spulenrahmens verlagerbaren Kopfelement angeordnet ist.
Der Manipulator beaufschlagt während der Fadenübergabe mit einer am Kopfende angeordneten Einrichtung ein am Spulenrahmen angeordnetes Leitblech im Sinne "Rahmen schließen" und verhindert dadurch zuverlässig, daß es während der Fadenübergabe zwischen der am Hülsenteller angeordneten Fadenfangeinrichtung und der Leerhülse zu einer schädlichen Relativbewegung kommen kann.A further development of the service unit described above is also known from DE 199 17 969 A1.
This known service unit has a swivel arm on which a thread delivery tube and a so-called manipulator with a head element which can be displaced in the direction of the bobbin frame are arranged.
The manipulator acts during the thread transfer with a device arranged at the head end of a baffle arranged on the bobbin frame in the sense of "closing the frame" and thereby reliably prevents that there can be a harmful relative movement between the thread catcher arranged on the tube plate and the empty tube during the thread transfer.

Das heißt, die Leerhülse ist zwischen den Hülsentellern mit einer solchen Andruckkraft festgelegt, daß sichergestellt ist, daß die am Hülsenteller angeordnete Fadenfangeinrichtung winkelsynchron mit der Leerhülse umläuft.
Eine am Kopfelement angeordnete Einrichtung in Form einer Fadenleitkante sorgt außerdem dafür, daß der in der Offenend-Spinnvorrichtung produzierte Faden zunächst an eine am Hülsenteller angeordnete Fadenfangeinrichtung übergeben und der gefaßte Faden anschließend definiert auf der Leerhülse abgelegt wird.That is, the empty sleeve is fixed between the sleeve plates with such a pressing force that it is ensured that the thread catching device arranged on the sleeve plate rotates in synchronism with the empty sleeve.
A device arranged on the head element in the form of a thread guide edge also ensures that the thread produced in the open-end spinning device is first transferred to a thread catching device arranged on the tube plate and the collected thread is then deposited in a defined manner on the empty tube.

Bei diesem weiterentwickelten Serviceaggregat ist die Fadenschneideinrichtung zwar näher an die Mündung des Fadenlieferrohres herangerückt worden, die Fadenschneideinrichtung ist aber nach wie vor in das Lieferrohr integriert, so daß auch hier die vorstehend beschriebenen Probleme mit ungesicherten Fadenenden nicht vollständig beseitigt werden konnten. With this further developed service unit is the Thread cutting device is closer to the mouth of the Thread delivery tube has been brought up, the Thread cutting device is still in that Delivery tube integrated, so that the above problems with unsecured thread ends not described could be completely eliminated.

Ausgehend vom vorgenannten Stand der Technik liegt der Erfindung daher die Aufgabe zugrunde, ein Serviceaggregat dahingehend zu verbessern, daß ein einwandfreies Anlegen des in der Offenend-Spinnvorrichtung produzierten Fadens an eine im Spulenrahmen gehaltene Leerhülse, insbesondere ein sicheres Festlegen des Fadenendes gewährleistet ist.Based on the aforementioned prior art, the The invention is therefore based on the object of a service unit to improve in that a correct application of the thread produced in the open-end spinning device empty tube held in the coil frame, in particular a secure one Setting the thread end is guaranteed.

Diese Aufgabe wird erfindungsgemäß durch ein Serviceaggregat gelöst, das die im Anspruch 1 beschriebenen Merkmale aufweist.According to the invention, this object is achieved by a service unit solved, which has the features described in claim 1.

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

Die erfindungsgemäße Ausführungsform hat insbesondere den Vorteil, daß der Faden, der an eine Leerhülse angelegt werden soll, die zwischen den Hülsentellern eines Spulenrahmens gehalten ist, unmittelbar neben den Fadenfangeinrichtungen des Hülsentellers getrennt wird.
Auf diese Weise entsteht ein relativ kurzes Fadenende, das außerdem durch die Fadenanfangsreserve größtenteils überwickelt wird und damit sicher auf der Hülse fixiert ist.The embodiment of the invention has the particular advantage that the thread that is to be placed on an empty tube that is held between the tube plates of a bobbin frame is separated immediately next to the thread catching devices of the tube plate.
This creates a relatively short thread end, which is also largely overwound by the thread start reserve and is thus securely fixed on the sleeve.

In bevorzugter Ausführungsform ist dabei, wie im Anspruch 2 beschrieben, vorgesehen, daß das Zentrier- und Führungsblech, das die erfindungsgemäße Fadenschneideinrichtung trägt, mittels eines Schubkolbengetriebes in eine Betriebsstellung unmittelbar neben den Hülsenteller, der die Fadenfangeinrichtung aufweist, eingefahren werden kann. In dieser Betriebsstellung übergreift das Zentrier- und Führungsblech mit einem Zentrierspalt einen Zentrieransatz am Spulenrahmen, so daß die Fadenschneideinrichtung stets exakt positioniert ist. In a preferred embodiment, as in claim 2 described, provided that the centering and guide plate, which carries the thread cutting device according to the invention, by means of a thrust piston gear in an operating position right next to the pod, which the Has thread catcher, can be retracted. In this operating position, the centering and Guide plate with a centering gap on a centering approach Bobbin frame, so that the thread cutting device is always exact is positioned.

Das heißt, die Fadenschneideinrichtung ist stets unmittelbar neben der Fadenfangeinrichtung des Hülsentellers angeordnet.This means that the thread cutting device is always immediate arranged next to the thread catcher of the core plate.

Wie in den Ansprüchen 3 und 4 dargelegt, weist die Fadenschneideinrichtung in vorteilhafter Ausführungsform einen hakenförmigen, nach innen teilweise offenen Grundkörper auf. In den Grundkörper ist eine feststehende Schneide integriert, die eine, in Seitenansicht gesehen, um 45° geneigte Schneidkante aufweist.As set out in claims 3 and 4, the Thread cutting device in an advantageous embodiment hook-shaped base body partially open towards the inside. A fixed cutting edge is integrated in the base body, one, viewed in side view, inclined at 45 ° Has cutting edge.

Eine solche Ausbildung stellt einerseits sicher, daß der in der Offenend-Spinnvorrichtung hergestellte, zunächst noch über das Fadenlieferrohr abgesaugte Faden, sobald er durch die Fadenfangeinrichtung des Hülsentellers gefaßt worden ist, über die Schneidkante gezogen und dabei getrennt wird.
Andererseits ist durch eine derartige Anordnung der Schneide gewährleistet, daß das Bedienpersonal nicht versehentlich mit der Schneide in Kontakt kommen und sich dabei verletzen kann.Such a design ensures, on the one hand, that the thread produced in the open-end spinning device, initially still sucked off via the thread delivery tube, as soon as it has been gripped by the thread catching device of the core plate, is pulled over the cutting edge and thereby separated.
On the other hand, such an arrangement of the cutting edge ensures that the operating personnel cannot accidentally come into contact with the cutting edge and injure themselves in the process.

Weitere Einzelheiten der Erfindung sind einem nachfolgend anhand der Zeichnungen dargestellten Ausführungsbeispiel entnehmbar.Further details of the invention are as follows based on the drawings embodiment shown removable.

Es zeigen:

Fig. 1
schematisch eine Hälfte einer Offenend-Spinnmaschine mit einem die Arbeitsstellen der Spinnmaschine selbsttätig versorgenden Serviceaggregat,
Fig. 2
eine Serviceaggregate mit seinen wichtigsten Fadenhandhabungselementen, wobei die Hilfsfadenliefereinrichtung in einer Stellung steht, in der ein neu angesponnener Faden an eine in der Spulvorrichtung einer Arbeitsstelle gehaltene Leerhülse angelegt werden kann,
Fig. 3
in einem größeren Maßstab den vorderen Teil der Hilfsfadenliefereinrichtung mit der erfindungsgemäßen Fadenschneideinrichtung, in Seitenansicht,
Fig. 4
die Fadenschneideinrichtung gemäß Figur 3, in Draufsicht,
Fig. 5
die Fadenschneideinrichtung gemäß Figur 3, in Vorderansicht.
Show it:
Fig. 1
schematically one half of an open-end spinning machine with a service unit that automatically supplies the workstations of the spinning machine,
Fig. 2
a service unit with its most important thread handling elements, the auxiliary thread delivery device being in a position in which a newly spun thread can be placed on an empty tube held in the winding device of a work station,
Fig. 3
on a larger scale the front part of the auxiliary thread delivery device with the thread cutting device according to the invention, in side view,
Fig. 4
the thread cutting device according to Figure 3, in plan view,
Fig. 5
the thread cutting device according to Figure 3, in front view.

In Figur 1 ist schematisch eine Hälfte einer an sich bekannten Offenend-Spinnmaschine dargestellt und mit der Bezugszahl 1 gekennzeichnet.
Derartige Offenend-Spinnmaschinen weisen in der Regel eine Vielzahl gleichartiger Arbeitsstellen 2 auf, die jeweils mit einer Spinnvorrichtung 3 sowie einer Spulvorrichtung 4 ausgerüstet sind.
In der Spinnvorrichtung 3 wird das in einer Spinnkanne 5 vorgelegte Faserband 6 zu einem Faden 7 versponnen, der anschließend auf der Spulvorrichtung 4 zu einer Kreuzspule 8 aufgewickelt wird.
Wie in den Figuren angedeutet, weisen die Spulvorrichtungen 4 dabei einen Spulenrahmen 9 zum drehbaren Haltern einer Hülse 10 sowie eine Spulentrommel 11 zum Antreiben der Hülse 10 beziehungsweise der Kreuzspule 8 auf. In Figure 1, a half of a known open-end spinning machine is shown schematically and identified by the reference number 1.
Open-end spinning machines of this type generally have a multiplicity of work stations 2 of the same type, each of which is equipped with a spinning device 3 and a winding device 4.
In the spinning device 3, the sliver 6 placed in a spinning can 5 is spun into a thread 7, which is then wound up on the winding device 4 to form a cheese 8.
As indicated in the figures, the spooling devices 4 have a spool frame 9 for rotatably holding a sleeve 10 and a spool drum 11 for driving the sleeve 10 or the cheese 8.

Die meistens zweireihig ausgebildeten Offenend-Spinnmaschinen 1 besitzen zwischen ihren Arbeitsstellenreihen oft eine Spulentransporteinrichtung 12, über die fertiggestellte Kreuzspulen 8 entsorgt werden.The mostly double-row open-end spinning machines 1 have between their rows of jobs often a coil transport device 12, via the Completed packages 8 are disposed of.

An beziehungsweise auf der Spinnmaschine 1 ist, an Führungsschienen 13, 14 sowie Stützschienen 15 verfahrbar, ein Serviceaggregat 16, ein sogenannter Anspinnwagen, angeordnet. Das Laufwerk 17 des Serviceaggregates 16 weist dabei Laufrollen 18 beziehungsweise Stützräder 19 auf.
Die Versorgung des Serviceaggregates 16 mit elektrischer Energie erfolgt über eine Schleppkette oder, wie in Figur 1 angedeutet, über eine Schleifkontakteinrichtung 20.
Derartige Serviceaggregate 16 patrouillieren entlang der Arbeitsstellen 2 der Offenend-Spinnmaschine 1 und greifen selbsttätig ein, wenn an einer der Arbeitsstellen 2 ein Handlungsbedarf besteht.A service unit 16, a so-called piecing carriage, is arranged on or on the spinning machine 1, movable on guide rails 13, 14 and support rails 15. The drive 17 of the service unit 16 has rollers 18 or support wheels 19.
The service unit 16 is supplied with electrical energy via a drag chain or, as indicated in FIG. 1, via a sliding contact device 20.
Such service units 16 patrol along the work stations 2 of the open-end spinning machine 1 and intervene automatically when there is a need for action at one of the work stations 2.

Ein solcher Handlungsbedarf liegt beispielsweise vor, wenn an einer der Arbeitsstellen 2 ein Fadenbruch aufgetreten ist oder, wenn an einer der Arbeitsstellen eine Kreuzspule 8 ihren vorgeschriebenen Durchmesser erreicht hat und gegen eine Leerhülse 10 ausgetauscht werden muß.Such a need for action exists, for example, when one of the workplaces 2 has broken a thread or if a cheese 8 at one of the workstations has reached the prescribed diameter and against a Empty sleeve 10 must be replaced.

In einem solchen Fall läuft das Serviceaggregat 16 zu der betreffenden Arbeitsstelle 2, positioniert sich dort und sucht bei einem "normalen" Fadenbruch mit seiner Fadensuchdüse 21 das gerissene, auf die Umfangsoberfläche der Kreuzspule 8 aufgelaufene Fadenende. In such a case, the service unit 16 runs to the concerned job 2, positions itself there and searches in the case of a "normal" thread break with its thread search nozzle 21 the cracked, on the peripheral surface of the package 8 Accumulated thread end.

Nach Reinigung der Spinnvorrichtung 3 wird das inzwischen vorbereitete Fadenende in der Spinnvorrichtung neu an einen dort umlaufenden Faserring angesponnen.After cleaning the spinning device 3, this will meanwhile prepared thread end in the spinning device to a new there spun circular fiber ring.

Wie später erläutert wird, gestaltet sich der Bedienvorgang etwas diffiziler, wenn zunächst eine volle Kreuzspule 8 gegen eine Leerhülse 10 getauscht und anschließend wieder neu angesponnen werden muß.As will be explained later, the operating procedure is designed somewhat more difficult if first a full cheese 8 against an empty tube 10 exchanged and then new again must be spun on.

Die Figur 2 zeigt schematisch ein Serviceaggregat 16 mit seinen wichtigsten, zum Durchführen der vorgenannten Bedienfälle notwendigen Fadenhandhabungselementen. Wie vorstehend bereits angedeutet, weist das
Serviceaggregat 16 unter anderem eine schwenkbar gelagerte Fadensuchdüse 21 auf, deren an den Außenumfang der Kreuzspule 8 anlegbarer Saugschlitz gerissene Fadenenden aufnehmen kann. Des weiteren ist ein Ausstoß- und Antriebsarm 22 mit einer endseitig angeordneten Antriebsrolle 23 vorhanden.
Das Serviceaggregat 16 ist außerdem, wie bekannt, mit einem Fadenfangblech 25, einem Fadeneinzieher 26, einem Fadenzubringer 27 mit Zubringerzange 28 und Fadentrenneinrichtung 29 sowie mit einer steuerbaren Fadenabzugseinrichtung, bestehend aus einer antreibbaren Abzugsrolle 30 sowie einer schwenkbar angeordneten Druckrolle 31, ausgestattet.
Als weitere Bedienelemente sind in das Serviceaggregat 16 ein Rahmenöffner 32, ein Druckhebel 33 sowie eine Hilfsfadenliefer- und -entsorgungseinrichtung 34 eingebaut.FIG. 2 schematically shows a service unit 16 with its most important thread handling elements necessary for carrying out the aforementioned operating cases. As already indicated above, this shows
Service unit 16 includes, among other things, a pivotally mounted thread search nozzle 21, the suction slot of which can be placed on the outer circumference of the package 8 can accommodate torn thread ends. There is also an ejection and drive arm 22 with a drive roller 23 arranged at the end.
The service unit 16 is also, as is known, equipped with a thread catcher 25, a thread puller 26, a thread feeder 27 with feed tongs 28 and thread separating device 29 and with a controllable thread take-off device consisting of a drivable take-off roller 30 and a pivotably arranged pressure roller 31.
A frame opener 32, a pressure lever 33 and an auxiliary thread delivery and disposal device 34 are installed in the service unit 16 as further operating elements.

Die Hilfsfadenliefer- und -entsorgungseinrichtung 34 verfügt dabei beispielsweise über ein Rohrsystem 35, das über ein flexibles Verbindungselement 36, zum Beispiel einem Schlauch, mit einem in verschiedene Positionen einschwenkbaren Lieferrohr 37 verbunden ist. Das Lieferrohr 37 ist seinerseits an einem Schwenkarm 38 festgelegt, der um eine Schwenkachse 39 definiert schwenkbar gelagert ist.The auxiliary thread delivery and disposal device 34 has in this case, for example, via a pipe system 35 which has a flexible connecting element 36, for example a hose, with one that can be swiveled into different positions Delivery tube 37 is connected. The delivery tube 37 is in turn fixed to a swivel arm 38 which is about a swivel axis 39 is pivotally defined.

Das Rohrsystem 35, in das über ein Fadenlieferwerk 43 ein von einer Vorratsspule 44 abgezogener Hilfsfaden 45 eingespeist werden kann, weist im Eingangsbereich einen
Saugluftanschluß 40, der über ein Ventil 41 definiert zuschaltbar ist, sowie einen Druckluftanschluß 46, der über ein Ventil 47 ansteuerbar ist, auf. Des weiteren kann im oberen Bereich des Rohrsystems 35 eine erste Fadentrenneinrichtung 42 angeordnet sein.The pipe system 35, into which an auxiliary thread 45 drawn off from a supply spool 44 can be fed via a thread feed mechanism 43, has one in the entrance area
Suction air connection 40, which can be activated via a valve 41, and a compressed air connection 46, which can be activated via a valve 47. Furthermore, a first thread separating device 42 can be arranged in the upper region of the pipe system 35.

Am Schwenkarm 38 ist des weiteren ein Schubkolbengetriebe 48 festgelegt, an dessen Kolbenstange 49 endseitig ein Zentrierund Führungsblech 50 festgelegt ist, das die erfindungsgemäße Fadenschneideinrichtung 51 aufweist.There is also a thrust piston gear 48 on the swivel arm 38 fixed on the piston rod 49 at the end a centering Guide plate 50 is set that the invention Has thread cutting device 51.

Die erfindungsgemäße Fadenschneideinrichtung 51 ist in den Figuren 3 bis 5 näher dargestellt.The thread cutting device 51 according to the invention is shown in FIGS Figures 3 to 5 shown in more detail.

Die Figur 3 zeigt dabei in Seitenansicht den vorderen Teil eines Spulenrahmenarmes des Spulenrahmens 9, das Fadenlieferrohr 37 sowie das die Fadenschneideinrichtung 51 tragende Zentrier- und Führungsblech 50. Der Spulenrahmenarm weist endseitig einen Zentrieransatz 55 auf. Außerdem ist am Spulenrahmenarm , um eine
Rotationsachse 60 frei drehbar, ein Hülsenteller 52 drehbar gelagert, der an seinem Außenumfang mit einer Fadenfangeinrichtung 53 ausgestattet ist. 3 shows a side view of the front part of a bobbin frame arm of the bobbin frame 9, the thread delivery tube 37 and the centering and guide plate 50 carrying the thread cutting device 51. The end of the bobbin frame arm has a centering shoulder 55. It is also on the coil frame arm to a
Rotation axis 60 freely rotatable, a sleeve plate 52 rotatably mounted, which is equipped on its outer circumference with a thread catching device 53.

Zwischen dem dargestellten Hülsenteller 52 und einem entsprechenden, gegenüberliegenden Hülsenteller eines (nicht dargestellten) zweiten Spulenrahmenarmes ist, wie üblich, eine Leerhülse 10 eingespannt.Between the illustrated sleeve plate 52 and one corresponding, opposite sleeve plate one (not shown) second coil frame arm is, as usual, a Empty sleeve 10 clamped.

Wie aus Figur 3 ersichtlich, ist das Zentrier- und Führungsblech 50 an der Kolbenstange 49 eines Schubkolbengetriebes 48 festgelegt, und mittels dieses Schubkolbengetriebes 48 in die dargestellte Betriebsstellung I einfahrbar ist.
Das Zentrier- und Führungsblech 50 trägt auf seiner Rückseite die erfindungsgemäße Fadenschneideinrichtung 51, die im wesentlichen aus einem Grundkörper 56 sowie einer Schneide 57 besteht.As can be seen from FIG. 3, the centering and guide plate 50 is fixed on the piston rod 49 of a thrust piston gear 48, and can be moved into the operating position I shown by means of this thrust piston gear 48.
The centering and guide plate 50 carries on its back the thread cutting device 51 according to the invention, which essentially consists of a base body 56 and a cutting edge 57.

Wie aus Figur 3 ersichtlich, ist der Grundkörper 56 dabei hakenförmig ausgebildet, das heißt, der Grundkörper 56 ist nach unten teilweise offen.
Innerhalb der Grundkörperöffnung ist die Schneide 57 festgelegt, deren Schneidkante 58, wie dargestellt, unter einem Winkel von etwa 45° verläuft.As can be seen from FIG. 3, the base body 56 is hook-shaped, that is to say the base body 56 is partially open at the bottom.
The cutting edge 57 is fixed within the base body opening, the cutting edge 58 of which, as shown, extends at an angle of approximately 45 °.

Die Figur 5 zeigt, daß das Zentrier- und Führungsblech 50 neben einem Zentrierspalt 54 noch einen Fadenführungsspalt 59 aufweist.
Der im Fadenführungsspalt 59 geführte Faden 7 wird zur Erstellung einer Fadenanfangsreserve durch seitliche Verlagerung des Zentrier- und Führungsbleches 50 so geführt, daß das durch die Fadenschneideinrichtung 51 geschnittene Fadenende überwickelt und dadurch an der Hülse 10 festgelegt wird. FIG. 5 shows that the centering and guide plate 50 has a thread guide gap 59 in addition to a centering gap 54.
The thread 7 guided in the thread guide gap 59 is guided to create a thread start reserve by lateral displacement of the centering and guide plate 50 such that the thread end cut by the thread cutting device 51 is wound over and is thereby fixed to the sleeve 10.

Funktion der Einrichtung:Function of the facility:

Wenn eine Kreuzspule 8 ihren vorgeschriebenen Durchmesser erreicht hat, läuft das Serviceaggregat 16 zu der betreffenden Arbeitsstelle 2, positioniert sich dort und wechselt die volle Kreuzspule 8 gegen eine leere Hülse 10 aus.
Anschließend spinnt das Serviceaggregat 16 die Spinnvorrichtung 3 der betreffenden Arbeitsstelle 2 neu an.When a package 8 has reached its prescribed diameter, the service unit 16 runs to the relevant work station 2, positions itself there and changes the full package 8 against an empty tube 10.
The service unit 16 then spins the spinning device 3 of the relevant work station 2 again.

Zu Beginn des Anspinnprozesses steht der das Lieferrohr 37 der Hilfsfadenliefereinrichtung 34 tragende Schwenkarm 38 zur Übergabe eines Hilfsfadens 45 an die Saugdüse 21 in einer (nicht dargestellten) hinteren Position.
Die Mündung des Lieferrohres 37 steht dabei so im Bereich des Ansaugschlitzes der Saugdüse 21, daß ein über die Hilfsfadenliefereinrichtung 34 angelieferter und aus der Mündung des Lieferrohres 37 austretender Hilfsfaden 45 sofort von der Saugdüse 21 erfaßt werden kann.
Der Schwenkarm 38 wird daraufhin in seine vordere, in Figur 2 angedeutete Position geschwenkt. Dabei entsteht eine (nicht dargestellte) Fadensehne, die, wie bekannt und daher nicht näher erläutert, von den vorstehend beschriebenen Fadenhandhabungselementen des Serviceaggregates 16 erfaßt wird. Der Faden wird anschließend, wie üblich, vorbereitet und in der Offenend-Spinnvorrichtung 3 an einen dort umlaufenden Faserring angesponnen.At the beginning of the piecing process, the swivel arm 38 carrying the delivery tube 37 of the auxiliary thread delivery device 34 is in a rear position (not shown) for transferring an auxiliary thread 45 to the suction nozzle 21.
The mouth of the delivery tube 37 is so in the region of the suction slot of the suction nozzle 21 that an auxiliary thread 45 delivered via the auxiliary thread delivery device 34 and emerging from the mouth of the delivery tube 37 can be immediately grasped by the suction nozzle 21.
The pivot arm 38 is then pivoted into its front position, which is indicated in FIG. 2. This creates a thread chord (not shown) which, as is known and therefore not explained in more detail, is gripped by the thread handling elements of the service unit 16 described above. The thread is then, as usual, prepared and spun in the open-end spinning device 3 to a fiber ring running there.

Der in der Offenend-Spinnvorrichtung 3 produzierte Faden 7 wird zunächst, im Anschluß an den Hilfsfaden 45, über das Fadenlieferrohr 37 abgesaugt.
Die Mündung des Fadenlieferrohres 37 steht zu diesem Zeitpunkt im Bereich des Spulenrahmens 9. Das heißt, die Mündung des Fadenlieferrohres 37 ist etwas versetzt oberhalb der Rotationsachse 60 des Spulenrahmenarmes positioniert.
Durch Betätigung eines am Schwenkarm 38 angeordneten Schubkolbengetriebes 48 bzw. des an der Kolbenstange 49 des Schubkolbengetriebes 48 angeordneten Zentrier- und Führungsbleches 51 wird der Faden 7 in den Bereich einer am Hülsenteller 52 des Spulenrahmens 9 angeordneten Fadenfangeinrichtung 53 gebracht und von dieser erfaßt. Die in Richtung R umlaufende Fadenfangeinrichtung 53 sorgt anschließend dafür, daß der in der Fadenfangeinrichtung 53 gefaßte Faden 7 über die Schneidkante 58 der Fadenschneideinrichtung 51 gleitet und dabei geschnitten wird.The thread 7 produced in the open-end spinning device 3 is first sucked off via the thread feed tube 37 following the auxiliary thread 45.
The mouth of the thread delivery tube 37 is at this point in the area of the bobbin frame 9. That is, the mouth of the thread delivery tube 37 is positioned somewhat offset above the axis of rotation 60 of the bobbin frame arm.
By actuating a thrust piston gear 48 arranged on the swivel arm 38 or the centering and guide plate 51 arranged on the piston rod 49 of the thrust piston gear 48, the thread 7 is brought into the area of a thread catching device 53 arranged on the sleeve plate 52 of the bobbin frame 9 and is grasped by the latter. The thread catching device 53 rotating in the direction R then ensures that the thread 7 held in the thread catching device 53 slides over the cutting edge 58 of the thread cutting device 51 and is thereby cut.

Während das abgeschnittene freie Fadenende durch das Fadenlieferrohr 37 abgesaugt und entsorgt wird, sorgt ein (nicht dargestelltes) Schubkolbengetriebe, das parallel zur Rotationsachse 60 angeordnet ist, für eine seitliche Verlagerung des vorher etwas angehobenen Zentrier- und Führungsbleches 50 und dadurch zur Erstellung einer (nicht dargestellten) Fadenanfangsreserve.
Das heißt, der im Fadenführungsspalt 59 des Zentrier- und Führungsbleches 50 geführte Faden 7 wird unter seitlicher Verlagerung so auf die Leerhülse 10 gewickelt, daß die dabei entstehende Fadenanfangsreserve das Fadenende überwickelt und dadurch auf der Hülse 10 sichert.While the cut free thread end is sucked off and disposed of by the thread delivery tube 37, a (not shown) push piston mechanism, which is arranged parallel to the axis of rotation 60, provides for a lateral displacement of the previously slightly raised centering and guide plate 50 and thereby for the creation of a (not illustrated) thread start reserve.
That is, the thread 7 guided in the thread guide gap 59 of the centering and guide plate 50 is wound with lateral displacement on the empty tube 10 so that the thread reserve thus created winds over the thread end and thereby secures it on the tube 10.

Claims (5)

Serviceaggregat zum selbsttätigen Bedienen von Arbeitsstellen einer Kreuzspulen herstellenden Textilmaschine, insbesondere einer Offenend-Rotorspinnmaschine, wobei das Serviceaggregat eine pneumatische Hilfsfadenliefer- und -entsorgungseinrichtung mit einem schwenkbar gelagerten Fadenlieferrohr sowie einer Fadenschneideinrichtung aufweist,
dadurch gekennzeichnet, daß die Fadenschneideinrichtung (51) an einem Zentrier- und Führungsblech (50) so angeordnet ist, daß sie in einer Betriebsstellung (I) des Zentrier- und Führungsbleches (50) in unmittelbarer Nähe einer Fadenfangeinrichtung (53) eines in einem Spulenrahmen (9) der betreffenden Arbeitsstelle (2) frei drehbar gelagerten Hülsentellers (52) positioniert ist.Service unit for the automatic operation of workstations of a textile machine producing cross-wound bobbins, in particular an open-end rotor spinning machine, the service unit having a pneumatic auxiliary thread delivery and disposal device with a pivotably mounted thread delivery tube and a thread cutting device,
characterized in that the thread cutting device (51) is arranged on a centering and guide plate (50) such that in an operating position (I) of the centering and guide plate (50) in the immediate vicinity of a thread catching device (53) one in a bobbin frame (9) the relevant work station (2) is freely rotatably mounted sleeve plate (52). Serviceaggregat nach Anspruch 1, dadurch gekennzeichnet, daß das Zentrier- und Führungsblech (50) mittels eines Schubkolbengetriebes (48) in die Betriebsstellung (I) einfahrbar ist, in der ein Zentrierspalt (54) des Zentrierund Führungsbleches (50) mit einem Zentrieransatz (55) am Spulenrahmen (9) korrespondiert und dabei die Fadenschneideinrichtung (51) exakt positioniert.Service unit according to Claim 1, characterized in that the centering and guide plate (50) can be moved into the operating position (I) by means of a thrust piston gear (48) in which a centering gap (54) of the centering and guide plate (50) with a centering projection (55 ) on the bobbin frame (9) corresponds and the thread cutting device (51) is positioned exactly. Serviceaggregat nach Anspruch 1, dadurch gekennzeichnet, daß die Fadenschneideinrichtung (51) einen hakenförmigen, teilweise offenen Grundkörper (56) aufweist, in den eine feststehende Schneide (57) integriert ist. Service unit according to claim 1, characterized in that the thread cutting device (51) has a hook-shaped, partially open base body (56) into which a fixed cutting edge (57) is integrated. Serviceaggregat nach Anspruch 3, dadurch gekennzeichnet, daß die Schneide (57) eine, in Seitenansicht gesehen, um 45° geneigte, zur Mitte des Grundkörpers (56) weisende Schneidkante (58) besitzt.Service unit according to Claim 3, characterized in that the cutting edge (57) has a cutting edge (58) which, viewed in side view, is inclined by 45 ° and points towards the center of the base body (56). Serviceaggregat nach Anspruch 1, dadurch gekennzeichnet, daß das die Fadenschneideinrichtung (51) tragende Zentrier- und Führungsblech (50) neben einem Zentrierspalt (54) noch einen Fadenführungsspalt (59) besitzt.Service unit according to claim 1, characterized in that the centering and guide plate (50) carrying the thread cutting device (51) has a thread guide gap (59) in addition to a centering gap (54).
EP02012291A 2001-08-22 2002-06-05 Servicing device for a textile machine which produces cross-wound bobbins Withdrawn EP1285983A1 (en)

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DE10141046A DE10141046A1 (en) 2001-08-22 2001-08-22 Service unit for a textile machine producing cross-wound bobbins
DE10141046 2001-08-22

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US10829338B2 (en) 2017-07-19 2020-11-10 Maschinenfabrik Rieter Ag Method for operating a workstation of a spinning machine or winding machine
CN108642616A (en) * 2018-05-22 2018-10-12 卓郎（江苏）纺织机械有限公司 Rotor spinning machine with spinning organ opening state detection device
CN108642616B (en) * 2018-05-22 2021-03-26 卓郎（江苏）纺织机械有限公司 Rotor spinning machine with spinning unit open state detector

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