EP0311827B1 - Method and apparatus for guiding, holding and cutting a yarn during bobbin exchange - Google Patents

Method and apparatus for guiding, holding and cutting a yarn during bobbin exchange Download PDF

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Publication number
EP0311827B1
EP0311827B1 EP88115758A EP88115758A EP0311827B1 EP 0311827 B1 EP0311827 B1 EP 0311827B1 EP 88115758 A EP88115758 A EP 88115758A EP 88115758 A EP88115758 A EP 88115758A EP 0311827 B1 EP0311827 B1 EP 0311827B1
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EP
European Patent Office
Prior art keywords
thread
bobbin
winding
region
cross
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Expired - Lifetime
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EP88115758A
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German (de)
French (fr)
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EP0311827A3 (en
EP0311827A2 (en
Inventor
Dietmar Greis
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CAMBIO RAGIONE SOCIALE;RIETER INGOLSTADT SPINNEREI
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Schubert und Salzer Maschinenfabrik AG
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Publication of EP0311827A3 publication Critical patent/EP0311827A3/en
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    • 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
    • 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
    • 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
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/71—Arrangements for severing filamentary materials
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/14—Diameter, e.g. of roll or package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • 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

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Coiling Of Filamentary Materials In General (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Führen, Halten und Trennen eines Fadens beim Spulenwechsel an einer Spinn-Spulmaschine, bei der ein ununterbrochen angelieferter Faden zu einer Kreuzspule aufgewickelt wird und nach Erreichen eines vorbestimmten Durchmessers der Kreuzspule in einem Bereich seitlich neben dem Spulbereich bis nach Beendigung des Wechsels der vollen Kreuzspule gegen eine leere Spulenhülse gehandhabt wird.The invention relates to a method for guiding, holding and separating a thread when changing the bobbin on a spinning bobbin winder, in which a continuously delivered thread is wound into a package and after reaching a predetermined diameter of the package in a region to the side of the winding area until after completion of changing the full bobbin against an empty bobbin tube is handled.

Es ist bekannt, daß zum Handhaben des von einer Spinnstelle kontinuierlich einer Spulstelle zugeführten Fadens während des Spulenwechselvorganges zusätzlich mechanische und pneumatische Fadenführer eingesetzt werden, die den Faden aus dem für den Aufspulvorgang zuständigen Fadenführer herausnehmen und in einen seitlichen Bereich führen, bis der Spulenwechselvorgang beendet ist (DE-OS 2.445.182).It is known that mechanical and pneumatic thread guides are also used to handle the thread fed continuously from a spinning station to a winding station during the bobbin changing process, which take the thread out of the thread guide responsible for the winding process and guide it into a lateral area until the bobbin changing process is finished (DE-OS 2.445.182).

Diese zusätzlichen Fadenführer werden über Betätigungsstangen und Stößel aus der Ruhestellung in die Arbeitsstellung geschwenkt und halten den Faden von der Spulstelle entfernt. Der dabei weiter angelieferte Faden wird von einer Absaugeinrichtung aufgenommen. Nach dem Wechsel der vollen Kreuzspule gegen eine leere Spulenhülse wird der Faden einer Fadenklemmvorrichtung zugeführt, das Fadenende mit einer Schere abgeschnitten und anschließend die Spulenhülse in Drehung versetzt.These additional thread guides are swiveled from the rest position into the working position via actuating rods and plungers and keep the thread away from the winding position. The thread that is delivered further is picked up by a suction device. After replacing the full bobbin with an empty bobbin tube, the thread is fed to a thread clamping device, the end of the thread is cut off with scissors and the spool tube is then rotated.

Dabei liegt ein Nachteil in dem hohen mechanischen Aufwand, der getrieben werden muB, um den für das Handhaben des Fadens nötigen Bewegungsablauf zu realisieren. Die groBe Anzahl von Betätigungsstangen und Stößeln verursacht einen hohen Montage- und Wartungsaufwand, der zu Produktionsausfall und hohen Kosten führt. Dies ist besonders ausschlaggebend bei Spinnmaschinen mit hoher Spinngeschwindigkeit, bei denen der Spulenwechsel und die Stillstandszeit der Spulvorrichtung möglichst gering zu halten sind, da der während des Spulenwechsels gesponnene Faden nicht zum Aufspulen verwendet werden kann. Das Stoppen des Spinnvorgangs mit anschließendem Neuanspinnen würde bei Offenend-Spinnmaschinen einen zu groBen Aufwand bedeuten.A disadvantage of this is the high mechanical effort that has to be done in order to implement the sequence of movements required for handling the thread. The large number of actuating rods and plungers causes high assembly and maintenance costs, which leads to loss of production and high costs. This is particularly important in spinning machines with high spinning speeds, in which the bobbin change and the idle time of the winding device are to be kept as short as possible, since the thread spun during the bobbin change cannot be used for winding. Stopping the spinning process with subsequent re-spinning would mean too much effort for open-end spinning machines.

Der Einsatz zusätzlicher Fadenführer, die beim Spulenwechsel den Faden zu ergreifen haben, bringt einen weiteren Nachteil mit sich. Besonders bei den hohen Spinn- und Spulgeschwindigkeiten, die bei Offenend-Spinnmaschinen erzielt werden, ist die Changiergeschwindigkeit derart hoch, daß eine gesicherte Fadenübergabe von dem Changierfadenführer zu dem zusätzlichen Fadenführer nicht gewährleistet ist. Bei Fehlversuchen der Fadenübergabe geht wertvolle Produktionszeit verloren, und wird eine übervolle oder falsch gewickelte Kreuzspule erzeugt.The use of additional thread guides, which have to take hold of the thread when changing the bobbin, has another disadvantage. Particularly with the high spinning and winding speeds that are achieved with open-end spinning machines, the traversing speed is so high that a secure thread transfer from the traversing thread guide to the additional thread guide is not guaranteed. If the thread transfer is unsuccessful, valuable production time is lost and an overfilled or incorrectly wound cheese is produced.

Nachteilig wirkt sich für die Spulenbildung weiterhin aus, daß erst nach dem Klemmen des Fadens die Spulenhülse durch Lösen einer Backenbremse beschleunigt wird. Dies ergibt bei konstanter Fadenliefergeschwindigkeit eine schlechte Fadenwicklung, da die Fadenspannung zwischen Spulenhülse und Spinnstelle während des Beginns des Spulvorganges ungleichmäßig hoch ist.Another disadvantage for the bobbin formation is that the bobbin tube is only accelerated by releasing a shoe brake after the thread has been clamped. This results in a bad thread winding at a constant thread delivery speed, since the thread tension between the bobbin tube and the spinning position is unevenly high during the start of the winding process.

Das in der DE-OS 3.411.158 beschriebene Verfahren verwendet zur Handhabung des Fadens während des Spulenwechsels lediglich einen pneumatischen Hilfsfadenführer, der aber ebenso wie der eingangs beschriebene zusätzliche Fadenführer in eine Arbeitsposition geschwenkt werden muB. Der benötigte Bewegungsablauf setzt sich aus mehreren Dreh- und Längsbewegungen zusammen und ergibt einen hohen Steuerungs-, Montage- und Wartungsaufwand. Nach dem Spulenwechsel wird der Faden in eine Fadenfangkerbe auf der Leerhülse aufgebracht und dort geklemmt. Anschließend wird der während des Spulenwechsels an der Spinnstelle gesponnene Faden abgerissen. Dies hat den Nachteil, daß nicht genau festgelegt werden kann, an welcher Stelle der Faden reiBt und es somit möglich ist, daß der Faden an der Klemmstelle auf der Spulenhülse reißt oder auch aus der Klemmstelle wieder herausgezogen wird. Wenn dies geschieht, muß der Faden erneut gefangen und der Klemmvorgang wiederholt werden, was zu einer erheblichen Zeitverzögerung und zu einer schlechten Produktivität der Spulmaschine führt.The method described in DE-OS 3.411.158 only uses a pneumatic auxiliary thread guide for handling the thread during the bobbin change, but this is just like the entry described additional thread guide must be pivoted into a working position. The required sequence of movements is made up of several rotary and longitudinal movements and results in a high level of control, assembly and maintenance. After changing the bobbin, the thread is placed in a thread catch notch on the empty tube and clamped there. Then the thread spun at the spinning position during the bobbin change is torn off. This has the disadvantage that it cannot be determined exactly at which point the thread breaks, and it is therefore possible for the thread to tear at the clamping point on the bobbin tube or to be pulled out of the clamping point again. If this happens, the thread must be caught again and the clamping process repeated, which leads to a considerable time delay and poor productivity of the winding machine.

In der DE-OS 2.230.947 wird eine Vorrichtung gezeigt, in der ein Schrittmotor die Changierung eines Fadenführers übernimmt. Die Changiergeschwindigkeit ändert sich dabei in Abhängigkeit von der Drehgeschwindigkeit der Kreuzspule. Die Signale für die Geschwindigkeitsänderung werden auf elektromechanischem und elektronischem Wege ermittelt. Der Fadenführer wird über eine Welle angetrieben und bewegt sich vor dem Spulbereich hin und her. Der Nachteil dieser Vorrichtung ist, daß ein hoher Aufwand zur Signalaufnahme sowie zur Umkehrung einer ersten translatorischen Bewegung in eine zweite, der ersten entgegengesetzten translatorische Bewegung betrieben wird. Außerdem ist diese Vorrichtung lediglich zur Changierung und nicht zur Unterstützung des Spulenwechsels geeignet, da zur Steuerung des Schrittmotors immer eine Drehbewegung der Kreuzspule bzw. des Elementes, das die Kreuzspule antreibt, vorausgesetzt wird.DE-OS 2.230.947 shows a device in which a stepper motor takes over the traversing of a thread guide. The traversing speed changes depending on the rotational speed of the cheese. The signals for the speed change are determined electromechanically and electronically. The thread guide is driven by a shaft and moves back and forth in front of the winding area. The disadvantage of this device is that a high level of effort is required to record the signal and to reverse a first translatory movement into a second translational movement opposite to the first. In addition, this device is only suitable for traversing and not for supporting the bobbin change, since a rotational movement of the cross-wound bobbin or of the element which drives the cross-wound bobbin is always required to control the stepping motor.

Aufgabe der vorliegenden Erfindung ist es, die beschriebenen Nachteile der bekannten Vorschläge zu vermeiden und ein Verfahren zum Führen, Halten und Trennen eines Fadens und eine Vorrichtung dafür zu schaffen, den Spulenwechsel auch bei hohen Spinngeschwindigkeiten störungsfrei und einfach durchzuführen.The object of the present invention is to avoid the disadvantages of the known proposals described and to create a method for guiding, holding and separating a thread and a device for carrying out the bobbin change easily and easily even at high spinning speeds.

Die Aufgabe wird erfindungsgemäB durch das im Anspruch 1 beschriebene Verfahren und die Vorrichtung zu seiner Durchführung nach Anspruch 11 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.The object is achieved according to the invention by the method described in claim 1 and the device for carrying it out according to claim 11. Advantageous developments of the invention are described in the subclaims.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der einzigen Zeichnung beschrieben, die in einer Ansicht von vorn die wesentlichen Bestandteile einer Spulstelle beispielsweise an einer Offenend-Spinnmaschine zeigt.An embodiment of the invention is described below with reference to the single drawing, which shows the essential components of a winding unit, for example on an open-end spinning machine, in a view from the front.

Ein Changierfadenführer 1 führt einen ununterbrochen angelieferten Faden 22 mittels oszillierender Bewegungen gemäß dem eingezeichneten Doppelpfeil einer Kreuzspule 21 zu. Der Changierfadenführer 1 ist dabei auf einer ortsfest in den Haltern 12 und 13 montierten Fadenführerstange 11 verschiebbar gelagert. Die Kreuzspule 21 befindet sich auf einer Spulenhülse 2, die beidseitig von drehbar gelagerten Spulentellern 23 gehalten wird. Die Spulenteller 23 sind an bekannten und daher nicht gezeigten Spulenarmen befestigt, die eine Abstandsvergrößerung der Spulenhülse 2 zu einer Antriebswalze 31 erlauben. Die Antriebswalze 31 wird von der Achse 3 in eine Drehbewegung versetzt und treibt mit Hilfe einer reibschlüssigen Verbindung die Spulenhülse 2, die Kreuzspule 21 und die Spulenteller 23 an. Eine Fangvorrichtung 24 zum Erfassen des Fadens 22 bei Beginn des Aufspulvorgangs ist am äußeren Umfang des Spulentellers 23 angebracht.A traversing thread guide 1 feeds a thread 22, which is delivered continuously, to a cross-wound bobbin 21 by means of oscillating movements according to the double arrow shown. The traversing thread guide 1 is slidably mounted on a thread guide rod 11 mounted in the holders 12 and 13. The cheese 21 is located on a bobbin tube 2, which is held on both sides by rotatably mounted bobbin plates 23. The coil plates 23 are fastened to known and therefore not shown coil arms, which allow the distance between the coil sleeve 2 and a drive roller 31. The drive roller 31 is rotated by the axis 3 and drives the bobbin tube 2, the cheese 21 and the bobbin 23 with the aid of a frictional connection. A catching device 24 for grasping the thread 22 at the start of the winding process is attached to the outer circumference of the bobbin plate 23.

Die Bewegung des Changierfadenführers 1 wird von einem microprozessorgesteuerten Schrittmotor 4 erzeugt. Dieser Schrittmotor 4 treibt über ein Zahnrad 42 einen endlosen Zahnriemen 41 an, der in einem Umlenkrad 43 umgelenkt wird. An dem Zahnriemen 41 ist der Changierfadenführer 1 befestigt. Der microprozessorgesteuerte Schrittmotor 4 zeichnet sich durch sehr kurze Umkehrzeiten und sehr gute Beschleunigungswerte aus. Darüber hinaus ermöglicht die Microprozessorsteuerung die genaue Festlegung von Umkehrpunkten und Bewegungsabläufen, so daß sie hervorragend geeignet ist, die Handhabung des Fadens 22 während des Aufspulvorganges und des Spulenwechsels zu übernehmen. Ist ein bestimmter Durchmesser der Kreuzspule 21 erreicht, so bewegt der Schrittmotor 4 den Changierfadenführer 1 seitlich neben den Spulbereich 7 vor die Fadenabzugs-, -schneide- und -hebevorrichtung 5.The movement of the traversing thread guide 1 is generated by a microprocessor-controlled stepper motor 4. This stepper motor 4 drives an endless toothed belt 41 via a toothed wheel 42, which is deflected in a deflecting wheel 43. The traversing thread guide 1 is fastened to the toothed belt 41. The microprocessor-controlled stepper motor 4 is characterized by very short reversal times and very good acceleration values. In addition, the microprocessor control enables precise definition of reversal points and motion sequences, so that it is excellently suited to take over the handling of the thread 22 during the winding process and the bobbin change. When a certain diameter of the cheese 21 has been reached, the stepping motor 4 moves the traversing thread guide 1 laterally next to the winding area 7 in front of the thread take-off, cutting and lifting device 5.

Als Fadenabzugsvorrichtung dient jeweils eine pneumatisch wirkende Absaugung 51, 52. Die Fadenabzugs-, -schneide- und -hebevorrichtung 5 beinhaltet zwei Absaugungen 51 und 52, die seitlich neben einem Schneidmesser 54 mit einer Schlagrolle 55 und einem Fadenheber 56 angeordnet sind. Schneidmesser 54 und Fadenheber 56 sind beide an einem Hubmagneten 53 befestigt. Wird der Hubmagnet 53 betätigt, so bewegen sich Schneidmesser 54 und Fadenheber 56 in Richtung des Spulentellers 23. Bei leerer oder wenig gefüllter Spulenhülse 2 reicht die Hubbewegung des Hubmagneten 53 aus, daß sich der Umfang des Spulentellers 23 zwischen das Schneidmesser 54 und den Fadenheber 56 schiebt. Dabei kommt der Faden 22 in Eingriff mit der am Umfang des Spulentellers 23 befindlichen Fangvorrichtung 24. In der Endstellung des Hubmagneten 53 drückt das Schneidmesser 54 gegen die Schlagrolle 55. In dieser Stellung wird ein sich zwischen Schneidmesser 54 und Schlagrolle 55 befindlicher Faden 22 durchtrennt. Anstelle des Hubmagneten 53 kann Z.B. auch ein Pneumatikzylinder verwendet werden. Der Absaugung 52 ist ein Behälter 6 nachgeordnet, der zur Aufnahme abgetrennter Fadenreste geeignet ist, die von der Absaugung 52 angeliefert werden.A pneumatically acting suction device 51, 52 is used as the thread take-off device. The thread take-off, cutting and lifting device 5 contains two suction devices 51 and 52, which are arranged laterally next to a cutting knife 54 with a beater roller 55 and a thread lifter 56. Cutting knife 54 and thread lifter 56 are both attached to a lifting magnet 53. If the solenoid 53 is actuated, the cutting knife 54 and thread lifter 56 move in the direction of the bobbin winder 23. When the bobbin tube 2 is empty or not very full, the lifting movement of the solenoid 53 is sufficient for the circumference of the bobbin winder 23 to be between the cutting knife 54 and the thread lifter 56 pushes. The thread 22 comes into engagement with the catching device 24 located on the circumference of the bobbin plate 23. In the end position of the lifting magnet 53, the cutting blade 54 presses against the beater roller 55. In this position, a thread 22 located between the cutting blade 54 and beater roller 55 is severed. Instead of the solenoid 53, e.g. a pneumatic cylinder can also be used. The suction 52 is followed by a container 6, which is suitable for receiving separated thread remnants, which are supplied by the suction 52.

Die beschriebene Vorrichtung arbeitet nach folgendem Verfahren:The described device works according to the following procedure:

Im laufenden Spulbetrieb bewegt sich der Changierfadenführer 1 vor der Kreuzspule 21 hin und her. In seiner Lage zur Kreuzspule 21 wird der Changierfadenführer 1 durch die Fadenführerstange 11 gehalten, die wiederum ortsfest in den Haltern 12 und 13 gehalten wird. Der Changierfadenführer 1 wird von einem microprozessorgesteuerten Schrittmotor 4, mit dem der Changierfadenführer 1 über einen Zahnriemen 41 verbunden ist, angetrieben. Der Schrittmotor 4 kann durch die Microprozessorsteuerung derart angetrieben werden, daß der Changierfadenführer 1 den Faden 22 in Abhängigkeit vom Spulendurchmesser auf der Kreuzspule 21 verlegt. Da sich bei konstanter Drehzahl der Achse 3 mit der Antriebswalze 31 die Umdrehungszahl der Kreuzspule 21 mit zunehmendem Durchmesser verkleinert, die Fadenabzugsgeschwindigkeit aber im wesentlichen konstant bleibt, wird die Changiergeschwindigkeit auf diese veränderlichen Parameter angepaßt und somit ein weitgehend gleichbleibender Kreuzungswinkel auf der Kreuzspule 21 erzielt. Durch die sehr geringen Umkehrzeiten und Beschleunigungswerte des Schrittmotors 4 kann im allgemeinen auf eine Kantenverlegung auf der Kreuzspule 21 verzichtet werden. Sollte das Ergebnis aber dennoch unbefriedigend sein, so kann auch die Kantenverlegung von der Microprozessorsteuerung übernommen werden.In the running winding operation, the traversing thread guide 1 moves back and forth in front of the package 21. In its position relative to the package 21, the traversing thread guide 1 is held by the thread guide rod 11, which in turn is held stationary in the holders 12 and 13. The traversing thread guide 1 is controlled by a microprocessor Stepper motor 4, with which the traversing thread guide 1 is connected via a toothed belt 41, is driven. The stepper motor 4 can be driven by the microprocessor control in such a way that the traversing thread guide 1 moves the thread 22 in dependence on the bobbin diameter on the cheese 21. Since at constant speed of the axis 3 with the drive roller 31, the number of revolutions of the package 21 decreases with increasing diameter, but the thread take-off speed remains essentially constant, the traversing speed is adapted to these variable parameters and thus a largely constant crossing angle on the package 21 is achieved. Due to the very short reversal times and acceleration values of the stepping motor 4, it is generally not necessary to lay the edges on the cheese 21. However, if the result is still unsatisfactory, the edge processing can also be carried out by the microprocessor control.

Nachdem die Kreuzspule 21 einen vorbestimmten Durchmesser erreicht hat, erhält der Schrittmotor 4 ein Signal und beendet danach den Changiervorgang. Der Changierfadenführer 1 wird nun zusammen mit dem Faden 22 seitlich neben den Spulbereich 7 vor die Fadenabzugs-, -schneide- und -hebevorrichtung 5 geführt. Befindet sich der Changierfadenführer 1 vor der Absaugung 51, so wird der noch immer weitergelieferte Faden 22 von der Absaugung 51 angesaugt. Ist der Faden 22 von der Absaugung 51 erfaßt, bewegt sich der Changierfadenführer 1 weiter bis zu einer zweiten Absaugung 52. Auch hier wird der Faden 22 angesaugt, und der weitergelieferte Faden 22 aufgenommen, indem sich innerhalb der Absaugung 52 eine Fadenschlaufe bildet. Dieser Faden 22 ist nun zwischen den Absaugungen 51 und 52 derart gespannt, daß er auf einfache Weise mit einem Schneidmesser 54 durchtrennt werden kann. Dieses Schneidmesser 54 wird mit Hilfe des Hubmagneten 53 gegen eine Schlagrolle 55 gedrückt, die sich vorzugsweise zwischen den Absaugungen 51 und 52 befindet. Der Hubmagnet 53 erhält das Signal für die Hubbewegung, nachdem der Changierfadenführer 1 die Stellung vor der Absaugung 52 erreicht hat, und der Faden 22 von der Absaugung 52 erfaBt worden ist. Wenn sich der Faden 22 zwischen dem Schneidmesser 54 und der Schlagrolle 55 befindet, wird er bei dem Hubvorgang durchtrennt. Danach wird der Hubmagnet 53 in seine Ausgangsstellung zurückbewegt. Das spulenseitige Fadenende wird nun von der sich weiterhin drehenden Kreuzspule 21 aus der Absaugung 51 herausgezogen und auf der Kreuzspule 21 aufgespult. Das andere Fadenende wird ebenso wie der von der Spinnstelle weitergelieferte und durch den Changierfadenführer 1 geführte Faden 22 von der Absaugung 52 abgesaugt.After the cheese 21 has reached a predetermined diameter, the stepper motor 4 receives a signal and then ends the traversing process. The traversing thread guide 1 is now guided together with the thread 22 laterally next to the winding area 7 in front of the thread pulling, cutting and lifting device 5. If the traversing thread guide 1 is in front of the suction 51, the thread 22 still being delivered is sucked in by the suction 51. If the thread 22 is gripped by the suction 51, the traversing thread guide 1 moves on to a second suction 52. Here too the thread 22 is sucked in and the thread 22 supplied is picked up by forming a thread loop within the suction 52. This thread 22 is now stretched between the suction 51 and 52 so that it can be easily cut with a cutting knife 54. This cutting knife 54 is pressed by means of the lifting magnet 53 against a striking roller 55, which is preferably located between the suction devices 51 and 52. The solenoid 53 receives the signal for the lifting movement after the traversing thread guide 1 has reached the position in front of the suction 52 and the thread 22 has been gripped by the suction 52. If the thread 22 is between the cutting knife 54 and the impact roller 55, it is severed during the lifting process. The lifting magnet 53 is then moved back into its starting position. The end of the bobbin on the bobbin is now pulled out of the suction 51 by the bobbin 21, which continues to rotate, and wound on the bobbin 21. The other end of the thread, like the thread 22 which is passed on from the spinning station and guided by the traversing thread guide 1, is sucked off by the suction 52.

Nachdem das spulenseitige Fadenende auf der Kreuzspule 21 aufgespult worden ist, erfolgt der Spulenwechsel. Es wird die volle Kreuzspule 21 gegen eine leere Spulenhülse 2 ausgetauscht, und die Spulenhülse 2 durch Andrücken an die Antriebswalze 31 in Drehung versetzt.After the end of the thread on the bobbin 21 has been wound up, the bobbin is changed. The full cross-wound bobbin 21 is exchanged for an empty bobbin tube 2, and the bobbin tube 2 is rotated by pressing on the drive roller 31.

Nun wird der Changierfadenführer 1 mit dem Faden 22 vor den Fadenreservebereich 8 geführt und spannt somit den Faden 22 zwischen den Changierfadenführer 1 und der Absaugung 52. Sobald der Changierfadenführer 1 den Fadenreservebereich 8 erreicht hat, wird der Hubmagnet 53 betätigt und hebt den Faden 22 mit dem an dem Hubmagneten 53 befestigten Fadenheber 56 in Richtung Spulenteller 23. Der sich mit der Spulenhülse 2 drehende und mit einer Fangvorrichtung 24 versehene Spulenteller 23 reicht bis in den Bereich des angehobenen Fadenhebers 56 hinein. Die Fangvorrichtung 24 greift den Faden 22 und klemmt ihn zwischen Spulenhülse 2 und Spulenteller 23 fest. Unmittelbar nach dem Klemmvorgang wird der Faden 22 von dem ebenfalls mit dem Hubmagneten 53 betätigten Schneidmesser 54 gegen die Schlagrolle 55 gedrückt und durchtrennt.Now the traversing thread guide 1 is guided with the thread 22 in front of the thread reserve area 8 and thus tensions the thread 22 between the traversing thread guide 1 and the suction 52. As soon as the traversing thread guide 1 has reached the thread reserve area 8, the lifting magnet 53 is actuated and lifts the thread 22 the thread lifter 56 attached to the lifting magnet 53 in the direction of the bobbin winder 23. The bobbin winder 23 rotating with the bobbin tube 2 and provided with a catch device 24 extends into the area of the raised thread lifter 56. The catching device 24 grips the thread 22 and clamps it between the bobbin tube 2 and the bobbin plate 23. Immediately after the clamping process, the thread 22 is pressed against the striking roller 55 by the cutting knife 54, which is also actuated by the lifting magnet 53, and severed.

Der in der Absaugung 52 aufgenommene abgetrennte Faden 22′ wird in den der Absaugung 52 folgenden Behälter 6 geleitet.The separated thread 22 'taken in the suction 52 is passed into the container 6 following the suction 52.

Der vor dem Fadenreservebereich 8 befindliche Changierfadenführer 1 wird nach dem Durchtrennen des Fadens 22 mit Hilfe des microprozessorgesteuerten Schrittmotors 4 langsam in Richtung des Spulbereichs 7 geführt und bildet dabei eine gegen Durchrutschen gesicherte Fadenreserve, indem der Faden 22 die sich drehende Spulenhülse 2 mehrmals umwindet.The traversing thread guide 1 located in front of the thread reserve area 8 is slowly guided in the direction of the winding area 7 after the thread 22 has been cut with the aid of the microprocessor-controlled stepping motor 4 and thereby forms a thread reserve secured against slipping by the thread 22 repeatedly winding around the rotating bobbin tube 2.

Nachdem die Bildung der Fadenreserve abgeschlossen ist, wird die Changierung des Changierfadenführers 1 vor dem Spulbereich 7 wieder aufgenommen. Dazu bewegt sich der Changierfadenführer 1 vor dem Spulbereich 7 hin und her und bespult die Kreuzspule 21 in der eingangs beschriebenen Weise.After the formation of the thread reserve is completed, the traversing of the traversing thread guide 1 in front of the winding area 7 is resumed. For this purpose, the traversing thread guide 1 moves back and forth in front of the winding area 7 and spools the package 21 in the manner described at the beginning.

Claims (18)

  1. Process for guiding, holding and cutting a thread during bobbin change on a spinning/winding machine in which a thread supplied without interruption is wound onto a cross-wound bobbin and, after a predetermined diameter of the cross-wound bobbin has been reached and until the full cross-wound bobbin has been exchanged for an empty tube, is handled in a region to the side next to the winding region, characterized in that the thread (22) is guided during all the winding and bobbin-changing procedures by a microprocessor-controlled stepping motor (4) by means of a cross-winding thread guide (1).
  2. Process according to Claim 1, characterized in that the thread (22), after reaching a predetermined bobbin diameter, is guided by the cross-winding thread guide (1) to the side next to the winding region (7), where it is grasped by a first thread removal apparatus (51), in that the thread (22) is then guided by the cross-winding thread guide (1) further to a second thread removal apparatus (52) and is also grasped thereby.
  3. Process according to Claim 2, characterized in that the thread (22) is cut through between the two thread removal apparatuses (51, 52) by a thread cutting apparatus (53, 54, 55).
  4. Process according to Claim 3, characterized in that the thread end at the bobbin side is removed from the first thread removal apparatus (51) by the still rotating cross-wound bobbin (21) and wound onto the cross-wound bobbin (21).
  5. Process according to Claim 4, characterized in that the thread (22) is drawn off from the second thread removal apparatus (52) during the bobbin-changing procedure.
  6. Process according to Claim 5, characterized in that the thread (22) is guided, after the bobbin-changing procedure, by the cross-winding thread guide (1) in front of the thread reserve region (8).
  7. Process according to Claim 6, characterized in that the thread (22) is grasped between the thread reserve region (8) and the second thread removal apparatus (52) by a thread lifting apparatus (53, 56) and brought into the region of action of a catching apparatus (24), grasped by the latter and fixed on the tube (2).
  8. Process according to Claim 7, characterized in that the thread (22), directly after it has been fixed on the tube (2), is grasped between the end plate (23) of the bobbin and the second thread removal apparatus (52) by the thread cutting apparatus (53, 54, 55) and is cut through.
  9. Process according to Claim 8, characterized in that the thread (22) is guided in the direction of the winding region (7) to form a thread reserve winding, and in that after formation of the thread reserve winding cross-winding is resumed in the winding region (7).
  10. Process according to Claim 8 or 9, characterized in that the severed thread end (22') is drawn off from the second thread removal apparatus (52).
  11. Apparatus for carrying out the process according to one of Claims 1 to 10, having a carrier which is movable to and fro and on which a thread guide is secured which guides a thread in a winding region, characterized in that the carrier is an endless belt which is driven by a microprocessor-controlled stepping motor (4) and extends over the winding region (7) and a thread removal, cutting and lifting apparatus (5) arranged next to the winding region (7).
  12. Apparatus according to Claim 11, characterized in that the carrier is a toothed belt (41).
  13. Apparatus according to Claim 11 or 12, characterized in that the thread removal apparatus (51, 52) operates pneumatically.
  14. Apparatus according to one of Claims 11 to 13, characterized in that the thread cutting apparatus comprises a solenoid (53), a cutting blade (54) and an impact roller (55).
  15. Apparatus according to one of Claims 11 to 14, characterized in that the thread cutting apparatus and the thread lifting apparatus form a structural unit and are extensible by means of a solenoid (53).
  16. Apparatus according to one of Claims 11 to 15, characterized in that the thread removal, cutting and lifting apparatus (5) is arranged stationary next to the winding region (7).
  17. Apparatus according to one of Claims 11 to 16, characterized in that a container (6) receiving the severed thread (22') is arranged downstream of the second thread removal apparatus (52).
  18. Apparatus according to one of Claims 11 to 17, characterized in that the thread lifting apparatus (53, 56) reaches, in its extended state, as far as the region of action of a catching apparatus (24) arranged on the end plate (23) of the bobbin.
EP88115758A 1987-10-12 1988-09-24 Method and apparatus for guiding, holding and cutting a yarn during bobbin exchange Expired - Lifetime EP0311827B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3734478 1987-10-12
DE19873734478 DE3734478A1 (en) 1987-10-12 1987-10-12 METHOD AND DEVICE FOR GUIDING, HOLDING AND SEPARATING A THREAD WHILE REEL CHANGING

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EP0311827A2 EP0311827A2 (en) 1989-04-19
EP0311827A3 EP0311827A3 (en) 1989-07-05
EP0311827B1 true EP0311827B1 (en) 1992-01-29

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EP88115758A Expired - Lifetime EP0311827B1 (en) 1987-10-12 1988-09-24 Method and apparatus for guiding, holding and cutting a yarn during bobbin exchange

Country Status (4)

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US (1) US4948057A (en)
EP (1) EP0311827B1 (en)
JP (1) JPH01203177A (en)
DE (2) DE3734478A1 (en)

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Also Published As

Publication number Publication date
DE3868216D1 (en) 1992-03-12
DE3734478A1 (en) 1989-04-27
EP0311827A3 (en) 1989-07-05
EP0311827A2 (en) 1989-04-19
US4948057A (en) 1990-08-14
DE3734478C2 (en) 1991-12-12
JPH01203177A (en) 1989-08-15

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