EP0279824B1 - Process for tying the starting end of a thread on a supply spool to the end of a running thread - Google Patents

Process for tying the starting end of a thread on a supply spool to the end of a running thread Download PDF

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Publication number
EP0279824B1
EP0279824B1 EP87905184A EP87905184A EP0279824B1 EP 0279824 B1 EP0279824 B1 EP 0279824B1 EP 87905184 A EP87905184 A EP 87905184A EP 87905184 A EP87905184 A EP 87905184A EP 0279824 B1 EP0279824 B1 EP 0279824B1
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EP
European Patent Office
Prior art keywords
yarn
thread
running
beginning
supply bobbin
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EP87905184A
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German (de)
French (fr)
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EP0279824A1 (en
Inventor
Gregor Gebald
Manfred Langen
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Individual
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • 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 method for connecting the beginning of the thread of a supply spool to the end piece of a thread running from a cross-wound bobbin or the like which is idling or separated in the event of a thread fault, in which the thread which has been run off by a thread sensor emitting an error signal when idling and / or in the event of a thread fault and is passed through a thread store.
  • the invention further relates to the application of the method and a device for performing the method.
  • a delivery bobbin which is generally designed as a bobbin, preferably without a thread interruption attach the beginning of the thread to a supply spool provided, for example by knotting or splicing.
  • the loose end of the thread - the so-called reserve thread or the thread reserve - of a spool that is currently running is connected to the beginning of the thread of a supply spool provided (usually immediately after the supply spool is provided). If the running bobbin runs properly, then there is a continuous thread transition from the running bobbin to the supply bobbin.
  • the invention has for its object to provide an automatically executed method for thread connection, in which a so-called reserve thread on the outgoing bobbin is not required. Another task is to eliminate as completely as possible any negative phenomena when the package is wound, such as thread breaks due to the most varied of causes or quality-impairing errors.
  • the aim is to increase the machine utilization effect, reduce the workload and increase the quality of the manufactured product, the weaving or knitting quality. In particular, the weft supply of a weaving machine is to be improved.
  • the solution according to the invention consists in the above-mentioned method for connecting the beginning of a supply spool to the running thread, which is passed through a thread sensor emitting an error signal when it is idle or in the event of a thread error, and through a thread store, in that the beginning of the thread of the supply spool is immediately adjacent to thread is provided on a thread connecting device arranged between the thread sensor and the thread storage device, that the substantially continuous thread take-off associated with the thread is interrupted by an error signal from the thread sensor and that during the interruption the end of the thread running is connected to the thread start of the supply spool.
  • the beginning of the thread of the supply spool provided is thus presented in such a way that, in the event of a reported thread idling or in the event of a thread fault, the thread provided is to be put together with the thread running off, preferably automatically.
  • it is not a loose end (reserve thread) of a running bobbin that is present from the outset, but the actual end of the running thread that is just being released is immediately connected directly to the thread start of the supply bobbin if required.
  • this actual end of the running thread will generally coincide with the end of the reserve thread, the thread of the bobbin will of course also have an end if the reserve thread is missing or cannot be found on the full bobbin.
  • the actual end of the thread may also be unpredictably anywhere within the total length of the thread of the bobbin running.
  • the invention thus not only ensures that the problems with the provision and selection of the reserve thread are eliminated, but at the same time it is possible to eliminate all disturbances which interrupt the continuous machine run and which are due to thread breaks or thread faults to be eliminated.
  • the threads must be joined together in the time that can be provided as a time buffer by a thread store placed between the connecting device and the downstream machine.
  • time buffers are only available in fractions of a second, that is to say for the duration of one to three weft entries.
  • fast-working devices for attaching or splicing are commercially available. If the thread runs very quickly, such as when a weft is inserted in a weaving machine, it is preferred for reasons of stability and quality to join the thread ends by splicing.
  • a thread connecting device and in a plane spatially triggered means for holding the beginning of the thread of the supply spool are arranged with an error signal.
  • a gripping or suction nozzle is provided at the tip of the thread start and one or more clamping means are provided in the area between the gripping nozzle and the supply spool.
  • the entire beginning of the thread of the supply spool is presented in such a way that, in the event of an error signal, the thread provided is put together with the thread running off and is to be put together in the thread connecting device within the buffer time.
  • the thread connecting device is expediently equipped with means for cutting off and suctioning off the thread end pieces which protrude after the splice connection has been formed.
  • the means for guiding and holding the beginning of the thread of the supply spool are controlled so that the beginning of the thread at the same time as the splice connection is completed and the thread take-off is immediately followed by the positions of guide, cleaning and feeling agents, etc., that normally pass through the running thread occupies.
  • These positions are preferably the series connection of thread threader, thread eyelet, thread sensor with cleaner, thread connection device with catch nozzle for the thread running off and one thread storage device or a thread take-up device connected upstream of the machine to be supplied with the thread.
  • the beginning of the thread F of a prepared bobbin 1 is gripped by a correspondingly pivotable gripping nozzle 2 and held in a position at a distance from the running thread A by means of clamping devices 3, in which, however, it is practically instantaneously with the end piece E. of the running thread A is to be brought into contact and connected.
  • the thread end piece E of the drain thread A which has just run down from a sleeve 4 according to FIG. 1, has already passed through a thread threader 5, a guide sleeve 6 and an electronic cleaner combined with a thread monitor or thread sensor 7 and is triggered by a command coming from the thread sensor 7 - in one Catch nozzle 8 held below a splice chamber 9. Also on a command from the thread sensor 7, which no longer registers a thread, the thread take-off which is continuous during normal operation is interrupted towards a weft thread store 10 connected downstream. However, the machine supplied by the weft thread store 10 can pull off the stored thread unchanged and continue to work accordingly unimpeded.
  • the gripping and catching nozzles 2, 8 both work as suction nozzles and can be equipped with a lock that prevents excessive thread parts from being sucked in.
  • the thread start F prepared by a movement, e.g. by lowering the gripping nozzle 2 and the clamping devices 3 into the splice chamber 9 and into the other guiding, cleaning and sensing means (threading thread 5, guide eye 6 and thread sensor 7).
  • the beginning of the thread F of the cheese 1 is connected to the end piece E of the outlet thread A already there by a compressed air vortex 11.
  • the thread ends remaining at the connection point held in the catching nozzle 8 are cut off with a knife 12. The cut end pieces are sucked in with the nozzles 2 and 8.
  • the interrupted thread take-off of the thread store 10 is started again and the thread is now drawn off from the package 1, which now serves as a supply bobbin.
  • the sleeve 4 is removed automatically or manually at the appropriate time and replaced by a new cheese.
  • the thread beginning provided on the end face of the latter is prepared for the next splicing process in the gripping nozzle 2.
  • FIGS. 1 and 2 the connection of the thread beginning of a supply spool to the separated end E of a drain thread A is shown.
  • the same parts are designated as in FIGS. 1 and 2.
  • the take-off thread A running off the cheese 12 up to the moment shown in FIG. 3 is broken in the region of the thread threading 5.
  • a similar picture would appear if the thread had been deliberately cut off after a fault had been found in the thread sensor 7. In any case, even in the case of a defect (thickening, double thread, loops or the like), the thread sensor 7 ultimately turns on.
  • the separated or broken thread end G of the package 12 can be brought into the clamping devices 3 by the gripping nozzle 2 in a manner similar to that previously described and used for connection to one end of the running thread are ready. If the corresponding handover does not work (or alternatively at all), the partially expired cross-wound bobbin 13 can also be replaced by a new supply bobbin, the thread of which must then be placed in the gripping nozzle 2 and in the clamping devices 3 for connection.

Abstract

The end (E) of a thread running from a spool (4) can be tied to the starting end of a thread on a supply spool (1) during the dead time of a thread magazine (10), if the starting end of the thread is prearranged so that when the thread is about to run out the starting end is tied to the end (E) of the running-out thread by a knot or splice.

Description

Die Erfindung betrifft ein Verfahren zum Anschließen des Fadenanfangs einer Vorratsspule an das leerlaufende bzw. bei einem Fadenfehler abgetrennte Endstück eines von einer Kreuzspule oder dergleichen ablaufenden Fadens, bei dem der abgelaufene Faden durch einen bei Leerlauf und/oder bei einem Fadenfehler ein Fehlersignal abgebenden Fadenfühler sowie durch einen Fadenspeicher geleitet wird. Die Erfindung betrifft ferner die Anwendung des Verfahrens und eine Vorrichtung zum Durchführen des Verfahrens.The invention relates to a method for connecting the beginning of the thread of a supply spool to the end piece of a thread running from a cross-wound bobbin or the like which is idling or separated in the event of a thread fault, in which the thread which has been run off by a thread sensor emitting an error signal when idling and / or in the event of a thread fault and is passed through a thread store. The invention further relates to the application of the method and a device for performing the method.

Beim Schußeintrag in der Weberei sowie auch in der Strickerei ist es für einen kontinuierlichen Fadenlauf - also für ein fortlaufendes Arbeiten ohne Maschinenunterbrechung - notwendig, das leerlaufende oder bei bei einem Fadenfehler abgetrennte Ende einer, im allgemeinen als Kreuzspule ausgebildeten Ablaufspule, möglichst ohne eine Fadenunterbrechung an den Fadenanfang einer bereitgestellten Vorratsspule, beispielsweise durch Knüpfen oder Spleißen, anzufügen. Zu diesem Zweck wird das lose Fadenende - der sogenannte Reservefaden bzw. die Fadenreserve - einer gerade ablaufenden Spule mit dem Fadenanfang einer bereitgestellten Vorratsspule (meist sofort nach dem Bereitlegen der Vorratsspule) verbunden. Bei ordnungsgemäßem Leerlaufen der ablaufenden Spule ergibt sich dann ein kontinuier licher Fadenübergang von der ablaufenden Spule auf die Vorratsspule.For weft insertion in the weaving mill as well as in the knitting mill, for a continuous thread run - i.e. for continuous work without machine interruption - it is necessary to start the idling or, if a thread fault has been severed, the end of a delivery bobbin, which is generally designed as a bobbin, preferably without a thread interruption attach the beginning of the thread to a supply spool provided, for example by knotting or splicing. For this purpose, the loose end of the thread - the so-called reserve thread or the thread reserve - of a spool that is currently running is connected to the beginning of the thread of a supply spool provided (usually immediately after the supply spool is provided). If the running bobbin runs properly, then there is a continuous thread transition from the running bobbin to the supply bobbin.

Diese allgemein angewendete Verfahrensweise hat aber zwei gravierende Nachteile. Einerseits fehlen, beispielsweise herstellungs- oder transportbedingt, stets bei einigen (meist bei etwa 3 bis 5%) der Kreuzspulen die als Reservefäden bezeichneten losen Fadenenden; andererseits ist eine Maschinenunterbrechung trotz ordnungsgemäß mit dem Fadenanfang der Vorratsspule verbundenem Reservefaden unvermeidlich, wenn der Faden irgendwann beim Ablaufen einer Spule oder beim Übergang von einer zur nächsten Spule reißt. Solche Fadenbrüche sind in vielen Typen bekannt und insbesondere bei automatischem Betrieb der Maschine mit wirtschaftlichen Mitteln nicht von vornherein auszuschließen.This generally used procedure has two serious disadvantages. On the one hand, some (mostly about 3 to 5%) of the packages have the loose thread ends, which are referred to as reserve threads, always missing, for example due to production or transport; on the other hand, a machine interruption is inevitable despite the reserve thread properly connected to the beginning of the thread of the supply spool if the thread breaks at some point when a bobbin runs out or during the transition from one bobbin to the next. Such thread breaks are known in many types and cannot be ruled out from the outset, in particular when the machine is operated automatically with economical means.

Der Erfindung liegt die Aufgabe zugrunde, ein automatisch auszuführendes Verfahren zum Fadenverbinden zu schaffen, bei dem ein sogenannter Reservefaden an der ablaufenden Spule nicht erforderlich ist. Eine weitere Aufgabe besteht darin, alle Negativerscheinungen beim Ablauf von Kreuzspulen, wie Fadenbrüche wegen der verschiedensten Ursachen oder qualitätsbeeinträchtigende Fehler, möglichst vollkommen zu beseitigen. Es wird angestrebt, den Maschinennutzeffekt zu erhöhen, den Arbeitsaufwand zu vermindern und die Qualität des hergestellten Erzeugnisses, die Web- oder Strickqualität, zu steigern. Insbesondere soll die Schußfadenversorgung einer Webmaschine verbessert werden.The invention has for its object to provide an automatically executed method for thread connection, in which a so-called reserve thread on the outgoing bobbin is not required. Another task is to eliminate as completely as possible any negative phenomena when the package is wound, such as thread breaks due to the most varied of causes or quality-impairing errors. The aim is to increase the machine utilization effect, reduce the workload and increase the quality of the manufactured product, the weaving or knitting quality. In particular, the weft supply of a weaving machine is to be improved.

Die erfindungsgemäße Lösung besteht bei dem eingangs genannten Verfahren zum Anschließen des Fadenanfangs einer Vorratsspule an den ablaufenden Faden, der durch einen bei Leerlauf oder bei einem Fadenfehler ein Fehlersignal abgebenden Fadenfühler sowie durch einen Fadenspeicher geleitet wird, darin, daß der Fadenanfang der Vorratsspule unmittelbar benachbart zum ablaufenden Faden an einem zwischen den Fadenfühler und dem Fadenspeicher angeordneten Fadenverbindungsgerät bereitgelegt wird, daß der dem ablaufenden Faden zugeordnete im wesentlichen kontinuierliche Fadenabzug durch ein Fehlersignal des Fadenfühlers unterbrochen wird und daß während der Unterbrechungdas Ende des ablaufenden Fadens mit dem Fadenanfang der Vorratsspule verbunden wird.The solution according to the invention consists in the above-mentioned method for connecting the beginning of a supply spool to the running thread, which is passed through a thread sensor emitting an error signal when it is idle or in the event of a thread error, and through a thread store, in that the beginning of the thread of the supply spool is immediately adjacent to thread is provided on a thread connecting device arranged between the thread sensor and the thread storage device, that the substantially continuous thread take-off associated with the thread is interrupted by an error signal from the thread sensor and that during the interruption the end of the thread running is connected to the thread start of the supply spool.

Erfindungsgemäß wird also der Fadenanfang der bereitgestellten Vorratsspule so vorgelegt, daß bei einem gemeldeten Fadenleerlauf oder bei einem Fadenfehler der bereitgelegte Faden mit dem ablaufenden Faden, vorzugsweise automatisch, zusammenzufügen ist. Erfindungsgemäß wird also nicht ein von vornherein vorhandenes loses Ende (Reservefaden) einer ablaufenden Spule sondern das tatsächliche, gerade frei werdende Ende des ablaufenden Fadens unmittelbar bei Bedarf sofort mit dem Fadenanfang der Vorratsspule verbunden. Dieses tatsächliche Ende des ablaufenden Fadens wird zwar in der Regel mit dem Ende des Reservefadens übereinstimmen, der Faden der Spule hat aber natürlich auch dann ein Ende, wenn der Reservefaden fehlt oder an der vollen Spule nicht auffindbar ist. Schließlich kann das tatsächliche Fadenende auch unvorhersehbar an irgendeiner Stelle innerhalb der Gesamtlänge des Fadens der ablaufenden Spule liegen. Durch die Erfindung wird also nicht nur erreicht, daß die Probleme mit dem Bereitlegen und Aussuchen des Reservefadens entfallen sondern es können zugleich alle den kontinuierlichen Maschinenlauf unterbrechende Störungen ausgeschieden werden, die auf Fadenbrüche oder auch auf auszuscheidende Fadenfehler zurückgehen.According to the invention, the beginning of the thread of the supply spool provided is thus presented in such a way that, in the event of a reported thread idling or in the event of a thread fault, the thread provided is to be put together with the thread running off, preferably automatically. According to the invention, therefore, it is not a loose end (reserve thread) of a running bobbin that is present from the outset, but the actual end of the running thread that is just being released is immediately connected directly to the thread start of the supply bobbin if required. Although this actual end of the running thread will generally coincide with the end of the reserve thread, the thread of the bobbin will of course also have an end if the reserve thread is missing or cannot be found on the full bobbin. Finally, the actual end of the thread may also be unpredictably anywhere within the total length of the thread of the bobbin running. The invention thus not only ensures that the problems with the provision and selection of the reserve thread are eliminated, but at the same time it is possible to eliminate all disturbances which interrupt the continuous machine run and which are due to thread breaks or thread faults to be eliminated.

Wenn der kontinuierliche Lauf der den Faden verarbeitenden Maschine durch das Verbinden der Fäden nicht unterbrochen werden soll, müssen die Fäden in derjenigen Zeit zusammengefügt werden, die als zeitlicher Puffer durch einen zwischen das Verbindungsgerät und die nachgeschaltete Maschine gesetzten Fadenspeicher zur Verfügung gestellt werden kann. Bei einem im Schußeintrag einer Webmaschine verwendeten Vorspulgerät als Fadenspeicher stehen zeitliche Puffer nur Bruchteile von Sekunden, das heißt für die Dauer von ein bis drei Schußeintragungen, zur Verfügung. Entsprechend schnell arbeitende Geräte zum Anknüpfen oder Anspleißen sind im Handel erhältlich. Wenn der Faden sehr schnell läuft, wie beispielsweise beim Schußeintrag einer Webmaschine, wird es aus Gründen der Stabilität und Qualität bevorzugt, die Fadenenden durch Spleißen zusammenzufügen.If the continuous running of the machine processing the thread is not to be interrupted by the connection of the threads, the threads must be joined together in the time that can be provided as a time buffer by a thread store placed between the connecting device and the downstream machine. In the case of a prewinding device used as thread store in the weft insertion of a weaving machine, time buffers are only available in fractions of a second, that is to say for the duration of one to three weft entries. Correspondingly fast-working devices for attaching or splicing are commercially available. If the thread runs very quickly, such as when a weft is inserted in a weaving machine, it is preferred for reasons of stability and quality to join the thread ends by splicing.

Gemäß weiterer Erfindung besteht eine Lösung der vorgenannten Aufgabe bei einer Vorrichtung zum Durchführen des eingangs genannten Verfahrens darin, daß auf den Weg des ablaufenden Fadens zwischen Kreuzspule und Fadenspeicher im Anschluß an den Fadenfühler ein Fadenverbindungsgerät und in einer Ebene räumlich darüber bei einem Fehlersignal ausgelöste Mittel zum Bereithalten des Fadenanfangs der Vorratsspule angeordnet sind. Insbesondere werden zum Halten des Fadenanfangs an dessen Spitze eine Greif- bzw. Saugdüse und im Bereich zwischen Greifdüse und Vorratsspule ein oder mehrere Klemmittel vorgesehen. Der gesamte Fadenanfang der Vorratsspule wird dabei so vorgelegt, daß bei einem Fehlersignal der bereitgestellte Faden mit dem ablaufenden Faden zusammengelegt und innerhalb der Pufferzeit in dem Fadenverbindungsgerät zusammenzufügen ist.According to a further invention, there is a solution to the aforementioned object in a device to carry out the method mentioned in the fact that on the path of the thread running between the package and the thread store following the thread sensor, a thread connecting device and in a plane spatially triggered means for holding the beginning of the thread of the supply spool are arranged with an error signal. In particular, a gripping or suction nozzle is provided at the tip of the thread start and one or more clamping means are provided in the area between the gripping nozzle and the supply spool. The entire beginning of the thread of the supply spool is presented in such a way that, in the event of an error signal, the thread provided is put together with the thread running off and is to be put together in the thread connecting device within the buffer time.

Das Fadenverbindungsgerät wird zweckmäßig mit Mitteln zum Abschneiden und zum Absaugen der nach dem Bilden der Spleißverbindung überstehenden Fadenendstücke ausgestattet. Außerdem werden die Mittel zum Führen und Halten des Fadenanfangs der Vorratsspule so gesteuert, daß der Fadenanfang spätestens zugleich mit dem Fertigstellen der Spleißverbindung und dem unmittelbar darauf folgenden Wiedereinschalten des Fadenabzugs die von dem ablaufenden Faden normalerweise passierten positionen von Führungs-, Reinigungs- sowie Fühlmitteln usw. einnimmt. Bei diesen Positionen handelt es sich vorzugsweise um die Reihenschaltung von Fadeneinfädler, Fadenöse, Fadenfühler mit-reiniger, Fadenverbindungsgerät mit Fangdüse für den ablaufenden Faden und einem der mit dem Faden zu versorgenden Maschine vorgeschalteten Fadenspeicher bzw. ein Fadenabzugsgerät.The thread connecting device is expediently equipped with means for cutting off and suctioning off the thread end pieces which protrude after the splice connection has been formed. In addition, the means for guiding and holding the beginning of the thread of the supply spool are controlled so that the beginning of the thread at the same time as the splice connection is completed and the thread take-off is immediately followed by the positions of guide, cleaning and feeling agents, etc., that normally pass through the running thread occupies. These positions are preferably the series connection of thread threader, thread eyelet, thread sensor with cleaner, thread connection device with catch nozzle for the thread running off and one thread storage device or a thread take-up device connected upstream of the machine to be supplied with the thread.

Anhand der schematischen Darstellung von Ausführungsbeispielen werden Einzelheiten der Erfindung erläutert.Details of the invention are explained on the basis of the schematic representation of exemplary embodiments.

Es zeigen:

  • Fig. 1 und 2 eine perspektivische Ansicht eines Fadenverbindungssystems bei leergelaufener Kreuzspule; und
  • Fig. 3 und 4 eine perspektive Ansicht des Fadenverbindungssystems für den Fall eines gebrochenen oder wegen eines Fehlers geschnittenen Ablauffadens.
Show it:
  • Figures 1 and 2 is a perspective view of a thread connection system with the bobbin empty. and
  • 3 and 4 is a perspective view of the thread connection system in the event of a broken or cut because of an error drain thread.

Im System nach Fig. 1 und 2 wird der Fadenanfang F einer bereitgelegten Kreuzspule 1 von einer entsprechend schwenkbaren Greifdüse 2 erfaßt und mit Hilfe von Klemmeinrichtungen 3 in einer Position mit Abstand vom ablaufenden Faden A gehalten, in der er jedoch praktisch augenblicklich mit dem Endstück E des ablaufenden Fadens A in Berührung zu bringen und zu verbinden ist.In the system according to FIGS. 1 and 2, the beginning of the thread F of a prepared bobbin 1 is gripped by a correspondingly pivotable gripping nozzle 2 and held in a position at a distance from the running thread A by means of clamping devices 3, in which, however, it is practically instantaneously with the end piece E. of the running thread A is to be brought into contact and connected.

Das nach Fig. 1 von einer Hülse 4 gerade heruntergelaufene Fadenendstück E des Ablauffadens A hat einen Fadeneinfädler 5, eine Führungshülse 6 und einen mit einem Fadenwächter oder auch Fadenfühler 7 kombinierten elektronischen Reiniger bereits durchlaufen und wird auf einen vom Fadenfühler 7 ausgehenden Befehl - in einer Fangdüse 8 unterhalb einer Spleißkammer 9 festgehalten. Ebenfalls auf einen Befehl des keinen Faden mehr registrierenden Fadenfühlers 7 hin wird der bei normalem Betrieb kontinuierliche Fadenabzug zu einem nachgeschälteten Schußfadenspeicher 10 hin unterbrochen. Die vom Schußfadenspeicher 10 versorgte Maschine kann jedoch den gespeicherten Faden unverändert abziehen und entsprechend unbehindert weiterarbeiten. Die Greif- und Fangdüsen 2, 8 arbeiten beide als Saugdüse und können mit einer Sperre ausgerüstet werden, die ein Einsaugen übermäßig großer Fadenteile ausschließt.The thread end piece E of the drain thread A, which has just run down from a sleeve 4 according to FIG. 1, has already passed through a thread threader 5, a guide sleeve 6 and an electronic cleaner combined with a thread monitor or thread sensor 7 and is triggered by a command coming from the thread sensor 7 - in one Catch nozzle 8 held below a splice chamber 9. Also on a command from the thread sensor 7, which no longer registers a thread, the thread take-off which is continuous during normal operation is interrupted towards a weft thread store 10 connected downstream. However, the machine supplied by the weft thread store 10 can pull off the stored thread unchanged and continue to work accordingly unimpeded. The gripping and catching nozzles 2, 8 both work as suction nozzles and can be equipped with a lock that prevents excessive thread parts from being sucked in.

Während des Fadenabzugs aus dem Speicher 10 wird nach Fig. 2 (bei oder durch Signalgabe des Fadenfühlers 7) der bereitgelegte Fadenanfang F durch eine Bewegung, z.B. durch Absenken, der Greifdüse 2 und der Klemmeinrichtungen 3 in die Spleißkammer 9 und in die übrigen Führungs-, Reinigungs- und Fühlmittel (Fadeneinfädelung 5, Führungsöse 6 und Fadenfühler 7) eingelegt. In der Spleißkammer 9 wird der Fadenanfang F der Kreuzspule 1 mit dem dort bereits liegenden Endstück E des Ablauffadens A durch einen Preßluftwirbel 11 verbunden. Die an der in der Fangdüse 8 gehaltenen Verbindungsstelle verbleibenden Fadenenden werden mit einem Messer 12 abgeschnitten. Die abgeschnittenen Endstücke werden mit den Düsen 2 und 8 angesaugt.2 (with or by signaling the thread sensor 7), the thread start F prepared by a movement, e.g. by lowering the gripping nozzle 2 and the clamping devices 3 into the splice chamber 9 and into the other guiding, cleaning and sensing means (threading thread 5, guide eye 6 and thread sensor 7). In the splice chamber 9, the beginning of the thread F of the cheese 1 is connected to the end piece E of the outlet thread A already there by a compressed air vortex 11. The thread ends remaining at the connection point held in the catching nozzle 8 are cut off with a knife 12. The cut end pieces are sucked in with the nozzles 2 and 8.

Unmittelbar anschließend wird der unterbrochene Fadenabzug des Fadenspeichers 10 wieder in Gang gesetzt und der Faden wird nun von der jetzt als Ablaufspule dienenden Kreuzspule 1 abgezogen. Außerdem wird automatisch oder manuell zu gegebener Zeit die Hülse 4 abgenommen und durch eine neue Kreuzspule ersetzt. Der auf der Stirnseite der letzteren vorgesehene Fadenanfang wird für den nächsten Spleißvorgang in der Greifdüse 2 bereitgelegt.Immediately afterwards, the interrupted thread take-off of the thread store 10 is started again and the thread is now drawn off from the package 1, which now serves as a supply bobbin. In addition, the sleeve 4 is removed automatically or manually at the appropriate time and replaced by a new cheese. The thread beginning provided on the end face of the latter is prepared for the next splicing process in the gripping nozzle 2.

Anhand der Fig. 3 und 4 wird das Anschließen des Fadenanfangs einer Vorratsspule an das abgetrennte Ende E eines Ablauffadens A dargestellt. Gleiche Teile werden wie in den Fig. 1 und 2 bezeichnet. Im Ausführungsbeispiel wird angenommen, daß der bis zu dem in Fig. 3 dargestellten Moment von der Kreuzspule 12 ablaufende Abzugsfaden A im Bereich der Fadeneinfädelung 5 gebrochen ist. Ein ähnliches Bild würde sich einstellen, wenn der Faden nach Feststellung eines Fehlers im Fadenfühler 7 absichtlich abgetrennt worden wäre. In jedem Fall, auch bei einer Fehlerstelle (Verdickung, Doppelfaden, Schlingen oder dergleichen) wird letztlich durch den Fadenfühler 7 ein. Ende des Fadens signalisiert und der in der Greifdüse 2 gehaltene Fadenanfang F der Vorratsspule wird praktisch sofort mit dem in der Spleißkammer 9 mit Hilfe einer Fangdüse 8 gehaltenen Fadenende E zusammengelegt und in der Spleißkammer 9 durch einen Preßluftwirbel 11 mit einem Spleiß verbunden.3 and 4, the connection of the thread beginning of a supply spool to the separated end E of a drain thread A is shown. The same parts are designated as in FIGS. 1 and 2. In the exemplary embodiment, it is assumed that the take-off thread A running off the cheese 12 up to the moment shown in FIG. 3 is broken in the region of the thread threading 5. A similar picture would appear if the thread had been deliberately cut off after a fault had been found in the thread sensor 7. In any case, even in the case of a defect (thickening, double thread, loops or the like), the thread sensor 7 ultimately turns on. The end of the thread signals and the thread start F of the supply spool held in the gripping nozzle 2 is practically immediately put together with the thread end E held in the splice chamber 9 with the aid of a catch nozzle 8 and connected to a splice in the splice chamber 9 by a compressed air swirl 11.

Im weiteren Verlauf kann das getrennte oder gebrochene Fadenende G der Kreuzspule 12 durch die Greifdüse 2 ähnlich wie vorher beschrieben in die Klemmeinrichtungen 3 gebracht und für den Anschluß an ein Ende des ablaufenden Fadens bereitgehalten werden. Sollte gegebenenfalls die entsprechende Übergabe nicht funktionieren (oder überhaupt alternativ) kann die teilweise abgelaufene Kreuzspule 13 auch durch eine neue Vorratsspule ersetzt werden, deren Faden dann wieder in der Greifdüse 2 und in den Klemmeinrichtungen 3 für einen Anschluß bereitzulegen ist.In the further course, the separated or broken thread end G of the package 12 can be brought into the clamping devices 3 by the gripping nozzle 2 in a manner similar to that previously described and used for connection to one end of the running thread are ready. If the corresponding handover does not work (or alternatively at all), the partially expired cross-wound bobbin 13 can also be replaced by a new supply bobbin, the thread of which must then be placed in the gripping nozzle 2 and in the clamping devices 3 for connection.

Claims (10)

1. A method of attaching the beginning (F) of the yarn from a supply bobbin (1) to the end piece (E), which is running idly or is severed in the event of a yarn defect, of a yarn (A) running off a crosswound package or the like, in which the running off yarn (A) is conveyed through a yarn sensor (7) which emits an error signal in the event of idle running and/or of a yarn defect as well as through a yarn store (10), characterised in that the beginning (F) of the yarn from the supply bobbin (1) is placed in readiness directly adjacent to the running off yarn (A) on a yarn connecting device (9) arranged between yarn sensor (7) and yarn store (10), in that the substantially continuous yarn take-off allocated to the running off yarn (A) is interrupted by an error signal from the yarn sensor (7) and in that the end (E) of the running off yarn (A) is connected to the beginning (F) of the yarn from the supply bobbin (1) during the interruption.
2. A method according to claim 1, characterised in that the yarns (A, F) are joined together in a period buffered by the yarn store (10), preferably by splicing.
3. A method according to claim 1 or 2, characterised in that the beginning (F) of the yarn coming from the supply bobbin (1) is also held in readiness on, and preferably spatially above, yarn guide means (5, 6) and a yarn sensor (7) of the running off yarn in addition to on the yarn connecting device (9) and, as it is being joined to the end (E) of the running off yarn (A), is brought into the original position thereof.
4. A method according to one or more of claims 1 to 3, characterised in that the beginning (F) of the yarn from the supply bobbin (1) is brought into the position adjacent to the running off yarn (A) and is held there by a gripping nozzle (2).
5. A method according to one or more of claims 1 to 4, characterised in that the beginning (F) of the yarn from the supply bobbin (1) is clamped between the supply bobbin (1) and the yarn connecting device (9) or the gripping nozzle (2) in a position for transfer into the guide means and measuring means (5 to 7) of the running off yarn (A).
6. A method according to one or more of claims 1 to 5, characterised in that the means for attaching the beginning (A) of the yarn to the end piece (E), in particular according to a predetermined programme, are allocated to that respective bobbin which will be the next to run idly or has only a predetermined residual yarn length which is preferably calculated in advance.
7. Application of the method according to one or more of claims 1 to 6 in the region between crosswound package and prewinding device during picking on a weaving loom.
8. Application of the method according to one or more of claims 1 to 6 in the region between crosswound package and yarn store of a knitting machine.
9. Apparatus for carrying out the method according to one or more of claims 1 to 6, characterised in that on the path of the running off yarn (A) between crosswound package and yarn store (10) after the yarn sensor (7) there are arranged a yarn connecting device (9) and, in a plane thereover, means (3) which are triggered during an error signal for holding the beginning (F) of the yarn from the supply bobbin (1) in readiness.
10. Apparatus according to claim 10, characterised by a series circuit comprising delivery bobbin or crosswound package, yarn threader (5), yarn eyelet (6), yarn sensor (7) with yarn cleaner, yarn connecting device (9) with collecting nozzle (8) for the running off yarn (A) and yarn store (10) with yarn take-off device as well as a device arranged spatially thereover with clamping means (3) and a gripping nozzle (2) for holding the beginning (F) of the yarn from the supply bobbin (1) in. readiness.
EP87905184A 1986-09-01 1987-08-19 Process for tying the starting end of a thread on a supply spool to the end of a running thread Expired - Lifetime EP0279824B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863629735 DE3629735A1 (en) 1986-09-01 1986-09-01 METHOD FOR CONNECTING THE START OF THREAD FROM A STOCK REEL TO THE END OF A RUNNING THREAD
DE3629735 1986-09-01

Publications (2)

Publication Number Publication Date
EP0279824A1 EP0279824A1 (en) 1988-08-31
EP0279824B1 true EP0279824B1 (en) 1990-10-17

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EP87905184A Expired - Lifetime EP0279824B1 (en) 1986-09-01 1987-08-19 Process for tying the starting end of a thread on a supply spool to the end of a running thread

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EP (1) EP0279824B1 (en)
DE (2) DE3629735A1 (en)
WO (1) WO1988001659A1 (en)

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EP0365472B1 (en) * 1988-10-19 1993-05-26 GebràœDer Sulzer Aktiengesellschaft Device for threading a thread in a loom
KR910008198A (en) * 1989-10-04 1991-05-30 고시바 헤이지 Transfer tail forming device of weft yarn
JP2001026376A (en) * 1999-07-14 2001-01-30 Tsudakoma Corp Yarn knotting detector for creel
FI116672B (en) * 2003-06-27 2006-01-31 Nextrom Holding Sa Method and apparatus in connection with the treatment of a fibrous product
ITUD20050142A1 (en) * 2005-09-14 2007-03-15 Sergio Zamattio METHOD AND ROLLING DEVICE OF A YARN AND BODY WRAPPED SO THAT IS REALIZED
WO2013112684A1 (en) 2012-01-24 2013-08-01 Nike International Ltd. Intermittent weaving splicer
EP2807300A4 (en) 2012-01-24 2015-12-02 Nike Innovate Cv Multiple layer weaving
DE102019112554B4 (en) 2019-05-14 2020-12-17 Cetex Institut gGmbH Method and device for the continuous processing of several rovings
CN113005621B (en) * 2021-03-03 2022-08-02 福建泳力泰针织机械有限公司 Circular knitting machine
CN113005622B (en) * 2021-03-03 2022-08-05 福建泳力泰针织机械有限公司 Full-computerized control knitting jacquard machine
CN112981691B (en) * 2021-03-15 2022-08-05 福建泳力泰针织机械有限公司 Driving system of knitting computer jacquard

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Also Published As

Publication number Publication date
DE3629735A1 (en) 1988-03-03
WO1988001659A1 (en) 1988-03-10
EP0279824A1 (en) 1988-08-31
DE3765636D1 (en) 1990-11-22

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