EP1899516B1 - Method and device for maintaining a weft thread which is introduced into a weaving machine, in particular an air-jet weaving machine, after the starting process - Google Patents

Method and device for maintaining a weft thread which is introduced into a weaving machine, in particular an air-jet weaving machine, after the starting process Download PDF

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Publication number
EP1899516B1
EP1899516B1 EP06742351A EP06742351A EP1899516B1 EP 1899516 B1 EP1899516 B1 EP 1899516B1 EP 06742351 A EP06742351 A EP 06742351A EP 06742351 A EP06742351 A EP 06742351A EP 1899516 B1 EP1899516 B1 EP 1899516B1
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EP
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Prior art keywords
weft thread
binding
weft
shed
weaving machine
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EP06742351A
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German (de)
French (fr)
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EP1899516A1 (en
Inventor
Valentin Krumm
Wolfgang Metzler
Dieter Teufel
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/308—Stretching or holding the weft

Definitions

  • the invention relates to a method for holding a weft thread inserted into the shed after a starting operation of a weaving machine, in particular an air jet weaving machine, within the first weaving cycle.
  • the entry of the weft thread is monitored by at least one sensor.
  • the loom is operated after each startup during at least the first weaving cycle in slow speed.
  • the at least first registered weft thread is held on the output side of the shed at least until its setting by warp threads against springing back into the shed.
  • the first weaving cycle ie based on the angle of rotation Main drive shaft to operate the first full revolution of the main drive shaft in slow speed, and less than 200 min -1 .
  • weft insertion In an air jet loom, the process of weft insertion itself is not affected by the slow speed; The weft insertion takes place in view of the time required for it, as if the air jet loom already work immediately after their startup at a predetermined operating speed.
  • the inserted weft thread on the weft side of the shed is known to be held by pneumatic stretching or suction nozzles.
  • the invention is therefore based on the object on looms, especially air jet looms, which are operated in the first weaving cycle after a weaving machine start in slow speed, low-cracking weft yarns can easily handle.
  • the object is achieved in that the registered in the shed weft thread is tied before joining by the warp threads of separate Abbindefäden time and that the setting is done by the Abbindefäden locally at least one position of the shed after its receipt.
  • At least one rotary edge cutter will set the inserted weft thread in time before setting by the warp threads by means of the at least two setting threads.
  • the electrical signal required for controlling the multi-turn means arranged over the weaving width can, in a further embodiment of the method according to the invention, be triggered by a sensor of the weft store associated with each air jet loom, in dependence on a number of turns of the weft reserve reserved on each weft store. It is also conceivable that the necessary signal is triggered by a sensor which monitors the arrival of the weft thread on the output side of the shed.
  • the electrical control of the drive of the individually controllable tissue edge and rotator devices by means of an electrical signal which is emitted by at least one weft insertion monitoring sensor.
  • Such a sensor is part of each weft yarn store, which holds a weft reserve for weft insertion into the shed of the air jet loom.
  • Such a sensor may also be part of the arranged at the output of the shed weft guard.
  • the senor may also be arranged in the region of the entry path lying between the weft thread store and the weft thread monitor and designed as a length measuring sensor.
  • Fabric 1 to be produced on an air-jet loom consists of warp threads 2 and weft threads 3.
  • the warp threads 2 form a shed 4 by shedding means 10.
  • a shed 4 by means of at least one weft insertion means 5 of the weft thread 3 in the Weft insertion channel 6a, see also FIG. 2 , a reed 6 and thus entered into the shed 4.
  • a longitudinal section of the weft thread 3 is held stretched by a pneumatic weft stretching device 7 until the time of striking the weft thread through the reed 6 to the stop edge 1 a of the fabric 1 and until its setting by the warp threads 2.
  • the Abbindefäden 8 leading means are connected to an individually controllable electric motor drive.
  • FIG. 2 shows the setting device 9 in the region of the warp threads.
  • the warp threads 2 are guided by eyelets 10 a of healds 10.
  • the healds 10 may be those of harness cords of a Jacquard device or those of heald frames.
  • the reed 6 accommodated in the so-called reed support 11 has a weft insertion channel 6a.
  • the device 9 for example one according to the European patent 0 674 031 B2 Built-up and controllable rotary edge cutter, Abbindefäden 8 leads in the manner of warp threads 2.
  • the electromotive drive of the device 9 receives, for example, from a sensor, not shown here, which monitors the entry of the weft yarn 3, to a as early as possible after the entry of the weft thread and during the slow running of the loom, an electrical signal.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

A weaving machine starts-up in slow speed operation during a first weaving cycle following the machine start. To help avoid weft breaks, a method is provided to hold a weft thread inserted into the loom shed during the first weaving cycle. A sensor monitors the weft insertion. The inserted weft thread is held by binding threads at a location downstream from an inlet side of the loom shed, before the weft thread is bound by the warp threads. The binding of the weft thread by the binding threads is carried out dependent on a signal of the sensor.

Description

Die Erfindung betrifft ein Verfahren zum Halten eines nach einem Startvorgang einer Webmaschine, insbesondere Luftdüsenwebmaschine innerhalb des ersten Webzyklus in das Webfach eingetragenen Schussfadens.The invention relates to a method for holding a weft thread inserted into the shed after a starting operation of a weaving machine, in particular an air jet weaving machine, within the first weaving cycle.

Der Eintrag des Schussfadens wird dabei von wenigstens einem Sensor überwacht. Die Webmaschine wird nach jedem Startvorgang während wenigstens des ersten Webzyklus im Langsamlauf betrieben.The entry of the weft thread is monitored by at least one sensor. The loom is operated after each startup during at least the first weaving cycle in slow speed.

Der wenigstens erste eingetragene Schussfaden wird ausgangsseitig des Webfaches zumindest bis zu dessen Abbinden durch Kettfäden gegen Zurückspringen in das Webfach gehalten.The at least first registered weft thread is held on the output side of the shed at least until its setting by warp threads against springing back into the shed.

Es sind bereits mehrere Schussfadendetektier- und Streckvorrichtungen bekannt, so z.B. aus der DE 198 02 254 C1 und der DE 198 10 129 B4 . Diese Schriften befassen sich jedoch nicht mit dem Verhalten von Schussgarnen beim Schusseintrag in verschiedenen Drehzahlbereichen der Webmaschine, z.B. bei einem Neustart der Webmaschine.There are already several Schussfadendetektier- and stretching devices known, such as from the DE 198 02 254 C1 and the DE 198 10 129 B4 , However, these writings are not concerned with the behavior of weft yarns when weft insertion in different speed ranges of the loom, for example when restarting the loom.

Beim Herstellen ausgewählter Gewebe, wie z.B. Jeans-Gewebe und Gewebe in Köper-Bindung auf Luftdüsenwebmaschinen hat sich als vorteilhaft erwiesen, insbesondere im Hinblick auf das Erzielen einer Webware ohne Anlaufstellen, nach jedem Start der Webmaschine den ersten Webzyklus, also bezogen auf den Drehwinkel der Hauptantriebswelle, die erste volle Umdrehung der Hauptantriebswelle im Langsamlauf zu betreiben, und zwar mit weniger als 200 min -1 . When fabricating selected fabrics, such as denim fabric and twill weave fabric on airjet looms, it has been found to be advantageous, especially with regard to achieving a woven fabric with no contact points, after each start of the loom, the first weaving cycle, ie based on the angle of rotation Main drive shaft to operate the first full revolution of the main drive shaft in slow speed, and less than 200 min -1 .

Die vorbeschriebene Technologie beim Betreiben von Luftdüsenwebmaschinen ist unter dem Begriff "Einzelschussaütomatik" seit geraumer Zeit bekannt.The above-described technology in the operation of air-jet looms has been known for quite some time under the term "single-shot automatism".

Bei einer Luftdüsenwebmaschine ist der Prozess des Schussfadeneintrags selbst von dem Langsamlauf nicht betroffen; der Schussfadeneintrag erfolgt im Hinblick auf die dafür erforderliche Zeitdauer so, als würde die Luftdüsenwebmaschine unmittelbar nach deren Startvorgang bereits mit einer vorbestimmten Betriebsdrehzahl arbeiten.In an air jet loom, the process of weft insertion itself is not affected by the slow speed; The weft insertion takes place in view of the time required for it, as if the air jet loom already work immediately after their startup at a predetermined operating speed.

Der also in einer Zeit von wenigen Millisekunden über die Gewebebreite in das Webfach eingetragene Schussfaden ist ausgangsseitig des Webfaches, also auf der dem Schussfadeneintrag gegenüberliegenden Seite des Webfaches, von geeigneten Mitteln so lange zu halten, bis dieser von dem Webblatt an die Gewebekante angeschlagen und von den fachbildenden Kettfäden abgebunden istSo in a time of a few milliseconds on the fabric width in the shed registered weft yarn is on the output side of the shed, so on the weft insertion opposite side of the shed to hold by suitable means until it struck by the reed to the fabric edge and of tied off the shed-forming warp threads

In Luftdüsenwebmaschinen wird der eingetragene Schussfaden auszugsseitig des Webfaches bekanntermaßen durch pneumatisch wirkende Streck- oder Saugdüsen gehalten.In air-jet looms, the inserted weft thread on the weft side of the shed is known to be held by pneumatic stretching or suction nozzles.

Bei der Verarbeitung von Schussgamen mit relativ geringer Reissfestigkeit ist feststellbar, dass während des unmittelbar dem Start der Webmaschine folgenden Webzyklus, in dem die Webmaschine im Langsamlauf betrieben wird, der betreffende Schussfaden unter der Wirkung der Haltemittel derart beeinträchtigt wird, dass ein Schussfadenbruch vor dem Abbinden des Schussfadens durch die Kettfäden auftritt.When processing weft yarns with relatively low tensile strength, it can be seen that during the weaving cycle following the start of the weaving machine, in which the weaving machine is operated at a slow speed, the weft yarn concerned is impaired under the effect of the holding means such that a weft breakage occurs before setting the weft thread through the warp threads occurs.

In einem solchen Falle "springt" der eintragssetig verbleibende Teil des Schussfadens in das noch nicht vollständig geschlossene Webfach zurück und produziert dadurch einen Fehler im Gewebe.In such a case, the part of the weft thread remaining in the entry section "jumps" back into the shed, which has not yet completely closed, and thereby produces a defect in the tissue.

Der Erfindung liegt daher die Aufgabe zugrunde, auf Webmaschinen, insbesondere Luftdüsenwebmaschinen, die im ersten Webzyklus nach einem Webmaschinenstart im Langsamlauf betrieben werden, auch reisskraftarme Schussgarne problemlos verarbeiten zu können.The invention is therefore based on the object on looms, especially air jet looms, which are operated in the first weaving cycle after a weaving machine start in slow speed, low-cracking weft yarns can easily handle.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass der in das Webfach eingetragene Schussfaden zeitlich vor dem Abbinden durch die Kettfäden von separaten Abbindefäden abgebunden wird und dass das Abbinden durch die Abbindefäden örtlich an wenigstens einer Position des Webfaches nach dessen Eingang erfolgt.The object is achieved in that the registered in the shed weft thread is tied before joining by the warp threads of separate Abbindefäden time and that the setting is done by the Abbindefäden locally at least one position of the shed after its receipt.

Zum Abbinden des Schussfadens können bekannte, individuell steuerbare Gewebekanten- und Drehereinrichtungen sowie Leisten- oder Fangleistenapparate verwendet werden.For setting the weft thread known, individually controllable tissue edge and rotary devices and inguinal or Fangleistenapparate can be used.

Drehereinrichtungen im Bereich des Webfachs z.B. in Maschinenmitte sind auch schon aus der WO 2005/012609 A bekannt. Dort werden zwei hintereinander liegende Dreherscheiben verwendet, um die Kantenfäden zweier nebeneinander liegender Gewebebahnen während des normalen Webprozesses abzubinden. Eine Ansteuerung zum Abbinden einzelner Schussfäden in Verbindung mit Langsamlauf der Webmaschine ist nicht vorgesehen.Turning devices in the area of the shed eg in the middle of the machine are also already out of the WO 2005/012609 A known. There two successive leno wheels are used to tie the edge threads of two adjacent fabric webs during the normal weaving process. A control for setting individual weft threads in conjunction with slow running of the loom is not provided.

Bei der Verwendung von bekannten Drehereinrichtungen, z.B. sogenannter Rotations-Kantendreher, wie diese aus EP 0 674 031 B2 bekannt sind, erhält der elektromotorisch angetriebener Rotations-Kantendreher, der die separaten Abbindefäden führt, ein elektrisches Signal von dem den Eintrag des Schussfadens in das Webfach überwachenden Sensor.When using known rotary devices, for example so-called rotary edge twisters, like these EP 0 674 031 B2 are known receives the electric motor driven rotary edge cutter, which leads the separate Abbindefäden a electrical signal from the sensor monitoring the entry of the weft in the shed.

Daraufhin wird zumindest der eine Rotations-Kantendreher den eingetragenen Schussfaden zeitlich vor dem Abbinden durch die Kettfäden mittels der wenigstens zwei Abbindefäden abbinden.Then at least one rotary edge cutter will set the inserted weft thread in time before setting by the warp threads by means of the at least two setting threads.

Durch eine über die Webbreite des herzustellenden Gewebes vorgesehene mehrfache Anordnung solcher Rotations-Kantendreher kann der eingetragene Schussfaden über seine Länge im nicht geschlossenen Webfach mehrmals, also an verschiedenen Positionen über die Webbreite, abgebunden werden.By providing over the weaving width of the fabric to be produced multiple arrangement of such rotary edgers, the registered weft thread over its length in the non-closed shed several times, so at different positions over the weaving width, are tied.

Mit dem mehrfachen Abbinden des Schussfadens wird in vorteilhafter Weise erreicht, dass die auf den eingetragenen Schussfaden wirksame Streckkraft der Streck- oder Saugdüse differenziert verringert werden kann und während des Langsamlaufs der Webmaschine Schussfadenbrüche auch bei der Verarbeitung reisskraftarmer Schussgame vermieden werden können.With the multiple setting of the weft yarn is achieved in an advantageous manner that the effective on the registered weft thread stretching force of the stretching or suction nozzle can be differentially reduced and during the slow running of the loom weft breakages can be avoided even when processing low-cracking Schussgame.

Das zur Ansteuerung der über die Webbreite mehrfach angeordneten Drehereinrichtungen notwendige elektrische Signal kann in weiterer Ausgestaltung des erfindungsgemäßen Verfahrens von einem Sensor der jeder Luftdüsenwebmaschine zugeordneten Schussfadenspeicher ausgelöst werden, und zwar in Abhängigkeit einer auf jedem Schussfadenspeicher vorbestimmbaren Windungszahl der auf den Schussfadenspeichern vorgehaltenen Schussfadenreserve. Denkbar ist ferner, dass das notwendige Signal von einem Sensor ausgelöst wird, der die Ankunft des Schussfadens ausgangsseitig des Webfaches überwacht.The electrical signal required for controlling the multi-turn means arranged over the weaving width can, in a further embodiment of the method according to the invention, be triggered by a sensor of the weft store associated with each air jet loom, in dependence on a number of turns of the weft reserve reserved on each weft store. It is also conceivable that the necessary signal is triggered by a sensor which monitors the arrival of the weft thread on the output side of the shed.

Im letzteren Fall würde das Abbinden des eingetragenen Schussfadens durch die von den Drehereinrichtungen geführten Abbindefäden gleichzeitig erfolgen.In the latter case, the setting of the inserted weft thread would take place at the same time by the binding threads guided by the rotary devices.

Beim Auslösen wenigstens eines ersten Signals von dem betreffenden Sensor der Schussfadenspeicher und durch weitere nachfolgende Signalbildung kann der Schussfaden in Richtung Ausgang des Webfaches zeitlich nacheinander durch weitere derartige Drehereinrichtungen führende Abbindefäden abgebunden werden.When triggering at least a first signal from the respective sensor of the weft yarn store and by further subsequent signal formation of the weft yarn can be tied in the direction of the output of the shed time sequentially by other such turning devices leading Abbindefäden.

Zur Durchführung des Verfahrens auf einer Luftdüsenwebmaschine ist die Verwendung bekannter, individuell steuerbarer Gewebekanten- und Drehereinrichtungen und die Verwendung gesteuerter Gewebe- und Fangleistenapparate vorgesehen.To carry out the method on an air jet loom, the use of known, individually controllable tissue edge and rotary devices and the use of controlled tissue and Fangleistenapparate is provided.

Die elektrische Ansteuerung des Antriebs der individuell steuerbaren Gewebekanten- und Drehereinrichtungen erfolgt mittels eines elektrischen Signals, das von wenigstens einem den Schussfadeneintrag überwachenden Sensor abgegeben wird.The electrical control of the drive of the individually controllable tissue edge and rotator devices by means of an electrical signal which is emitted by at least one weft insertion monitoring sensor.

Ein solcher Sensor ist Bestandteil jedes Schussfadenspeichers, der eine Schussfadenreserve zum Schussfadeneintrag in das Webfach der Luftdüsenwebmaschine bereithält. Ein solcher Sensor kann auch Bestandteil des am Ausgang des Webfaches angeordneten Schussfadenwächters sein.Such a sensor is part of each weft yarn store, which holds a weft reserve for weft insertion into the shed of the air jet loom. Such a sensor may also be part of the arranged at the output of the shed weft guard.

In weiterer Ausgestaltung der Erfindung kann der Sensor auch im Bereich des zwischen Schussfadenspeicher und Schussfadenwächter liegenden Eintragweges eingeordnet und als Längenmesssensor ausgebildet sein.In a further embodiment of the invention, the sensor may also be arranged in the region of the entry path lying between the weft thread store and the weft thread monitor and designed as a length measuring sensor.

Mit der erfindungsgemäßen Lösung wird es nun in vorteilhafter Weise erstmals möglich, auf Webmaschinen, insbesondere Luftdüsenwebmaschinen, die im jeweils ersten Webzyklus nach einem Maschinenstart im Langsamlauf betrieben werden, den während des ersten Webzyklus eingetragenen Schussfaden zeitlich vor dessen Abbinden durch die Kettfäden an auswählbaren Positionen zwischen dem Ein- und Ausgang des Webfaches durch Abbindefäden abzubinden. Damit kann einem Schussfadenbruch mit der Folge eines Zurückspringens des Schussfadens in das Webfach weitgehend vorgebeugt werden.With the solution according to the invention, it is now possible for the first time on weaving machines, in particular air jet looms, which are operated in the respective first weaving cycle after a machine start in slow speed, the weft inserted during the first weaving cycle in time before its setting by the warp threads at selectable positions between tie off the input and output of the shed by Abbindefäden. This can be largely prevented a weft breakage with the result of a return of the weft thread in the shed.

Die Erfindung wird nachfolgend an einem Ausführungsbeispiel näher erläutert.The invention will be explained in more detail using an exemplary embodiment.

In den Zeichnungen zeigen:

Figur 1
eine funktionale Einheit einer Luftdüsenwebmaschine mit Mitteln zum Eintragen eines Schussfadens in das Webfach, mit Mitteln zum Detektieren des Schussfadens ausgangsseitig des Webfaches und mit Mitteln zum Abbinden des Schussfadens in einer Position zwischen dem Ein- und Ausgang des Webfaches,
Figur 2
eine Ansicht X nach Figur 1 mit einem durch Abbindefäden abgebundenen Schussfaden bei geöffnetem Webfach.
In the drawings show:
FIG. 1
a functional unit of an air-jet weaving machine with means for introducing a weft thread into the shed, with means for detecting the weft thread on the output side of the shed and with means for setting the weft thread in a position between the inlet and outlet of the shed,
FIG. 2
a view X after FIG. 1 with a tied by Abbindefäden weft with open shed.

Ein in Figur 1 auf einer Luftdüsenwebmaschine herzustellendes Gewebe 1 besteht aus Kettfäden 2 und Schussfäden 3.An in FIG. 1 Fabric 1 to be produced on an air-jet loom consists of warp threads 2 and weft threads 3.

Die Kettfäden 2 bilden durch Fachbildemittel 10 ein Webfach 4 aus. In das Webfach 4 wird mittels wenigstens eines Schussfadeneintragmittels 5 der Schussfaden 3 in den Schussfadeneintragskanal 6a, siehe auch Figur 2, eines Webblattes 6 und damit in das Webfach 4 eingetragen.The warp threads 2 form a shed 4 by shedding means 10. In the shed 4 by means of at least one weft insertion means 5 of the weft thread 3 in the Weft insertion channel 6a, see also FIG. 2 , a reed 6 and thus entered into the shed 4.

Ausgangsseitig des Webfaches 4 wird ein Längenabschnitt des Schussfadens 3 durch eine pneumatisch wirksame Schussfadenstreckeinrichtung 7 bis zum Zeitpunkt des Anschlagens des Schussfadens durch das Webblatt 6 an die Anschlagkante 1 a des Gewebes 1 und bis zu dessen Abbinden durch die Kettfäden 2 gestreckt gehalten.On the output side of the shed 4, a longitudinal section of the weft thread 3 is held stretched by a pneumatic weft stretching device 7 until the time of striking the weft thread through the reed 6 to the stop edge 1 a of the fabric 1 and until its setting by the warp threads 2.

Bei Luftdüsenwebmaschinen, die im Hinblick auf das Vermeiden einer sogenannten Anlaufstelle im Gewebe im ersten Webzyklus nach einem Webmaschinenstop im Langsamlauf betrieben werden, kann die von einer pneumatisch wirkenden Streckeinrichtung 7 auf den Schussfaden ausgeübte Zugkraft solange der Schussfaden nicht durch die Kettfäden 2 abgebunden ist, zu einem Schussfadenbruch führen. Unerwünschte Unterbrechungen des Webprozesses sind die Folgen.In air jet looms, which are operated with a view to avoiding a so-called contact point in the fabric in the first weaving cycle after a weaving machine in slow motion, the force exerted by a pneumatic stretching device 7 on the weft tensile force as long as the weft thread is not tied by the warp threads 2, to lead a weft breakage. Unwanted interruptions of the web process are the consequences.

Mit dem Abbinden des erwähnten Schussfadens 3 durch Abbindefäden 8 an einer oder mehreren geeigneten Positionen zwischen dem Eingang 4a und Ausgang 4b des Webfaches 4 kann der betreffende Schussfaden bis zu dessen Anschlagen an die Anschlagkante des Gewebes 1 und bis zu dessen Abbinden durch die Kettfäden 2 gehalten werden.With the setting of the mentioned weft thread 3 by Abbindefäden 8 at one or more suitable positions between the entrance 4a and output 4b of the shed 4 of the respective weft yarn can be held until its abutment against the stop edge of the fabric 1 and until its setting by the warp threads 2 become.

Zur Ausführung dieser Vorgehensweise ist, wie in Figur 1 dargestellt, an geeigneter Position im Bereich der Kettfäden 2 eine an sich bekannte, als Abbindeeinrichtung 9 vorwendete Drehereinrichtung angeordnet, deren die Abbindefäden 8 führende Mittel mit einem individuell steuerbaren elektromotorischen Antrieb verbunden sind.To perform this procedure, as in FIG. 1 represented, at a suitable position in the region of the warp threads 2 a known per se, arranged as setting device 9 rotary device, the Abbindefäden 8 leading means are connected to an individually controllable electric motor drive.

Figur 2 zeigt die Abbindeeinrichtung 9 im Bereich der Kettfäden 2. FIG. 2 shows the setting device 9 in the region of the warp threads. 2

Zur Ausbildung des Webfaches 4 sind die Kettfäden 2 durch Ösen 10a von Weblitzen 10 geführt. Die Weblitzen 10 können dabei solche von Harnischschnüren einer Jacquardeinrichtung oder solche von Webschäften sein.To form the shed 4, the warp threads 2 are guided by eyelets 10 a of healds 10. The healds 10 may be those of harness cords of a Jacquard device or those of heald frames.

Das in der sogenannten Webblattstütze 11 aufgenommene Webblatt 6 besitzt einen Schussfadeneintragskanal 6a.The reed 6 accommodated in the so-called reed support 11 has a weft insertion channel 6a.

Bei geöffnetem Webfach 4 ist der Schussfaden 3 in den Schussfadeneintragskanal 6a des Webblattes 6 eingetragen.When open shed 4 of the weft thread 3 is entered into the weft insertion channel 6a of the reed 6.

Die Einrichtung 9, z.B. ein nach dem Europäischen Patent 0 674 031 B2 aufgebauter und steuerbarer Rotations-Kantendreher, führt Abbindefäden 8 in Art von Kettfäden 2. Der elektromotorische Antrieb der Einrichtung 9 erhält z.B. von einem hier nicht dargestellten Sensor, der den Eintrag des Schussfadens 3 überwacht, zu einem möglichst frühen Zeitpunkt nach dem Eintrag des Schussfadens und während des Langsamlaufs der Webmaschine ein elektrisches Signal.The device 9, for example one according to the European patent 0 674 031 B2 Built-up and controllable rotary edge cutter, Abbindefäden 8 leads in the manner of warp threads 2. The electromotive drive of the device 9 receives, for example, from a sensor, not shown here, which monitors the entry of the weft yarn 3, to a as early as possible after the entry of the weft thread and during the slow running of the loom, an electrical signal.

Durch z.B. eine aufgrund dieses Signals ausgeführte Halbdrehung der die Abbindefäden 8 in Ösen 9a führenden Dreherscheibe 9b erfolgt ein Abbinden des Schussfadens 3 bevor der während des Langsamlaufs der Webmaschine eingetragene Schussfaden an die Anschlagkante 1a des Gewebes 1 angeschlagen und durch die Kettfäden 2 abgebunden ist.By e.g. a executed due to this signal half of the Abbindefäden 8 in eyelets 9a leading leno disc 9b is a setting of the weft yarn 3 before the registered during the slow running of the loom weft yarn is struck against the stop edge 1a of the fabric 1 and tied by the warp threads 2.

Claims (6)

  1. Method for holding a weft thread inserted into the loom shed within the first weaving cycle after a starting process of a weaving machine, especially air-jet weaving machine, whereby the insertion of the weft thread is monitored by at least one sensor, whereby the weaving machine is operated in the slow speed running after each starting process during at least the first weaving cycle, and whereby the at least first inserted weft thread is held at the outlet side of the loom shed against springing back into the loom shed at least until the binding thereof by warp threads, characterized in that the inserted weft thread is bound by separate binding threads temporally before the binding by the warp threads, in that the binding by the binding threads occurs spatially at at least one position of the loom shed after its inlet, and in that the binding by means of the separate binding threads occurs dependent on a signal of the at least one sensor monitoring the insertion of the weft thread.
  2. Method according to claim 1, characterized in that the signal is triggered upon the presence of a predeterminable number of windings of a weft thread reserve held ready on a weft thread storage device.
  3. Method according to claim 1, characterized in that the signal is triggered upon the arrival of the weft thread at the outlet side of the loom shed.
  4. Method according to one of the claims 1 to 3, characterized in that the binding of the weft thread by the binding threads occurs multiply over the weaving width that is to be produced.
  5. Method according to claim 4, characterized in that the multiple binding of the weft thread by the binding threads occurs simultaneously.
  6. Method according to claim 4, characterized in that the multiple binding of the weft thread by the binding threads occurs temporally one after another in the direction of the weft thread insertion.
EP06742351A 2005-05-19 2006-05-17 Method and device for maintaining a weft thread which is introduced into a weaving machine, in particular an air-jet weaving machine, after the starting process Not-in-force EP1899516B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005022955A DE102005022955A1 (en) 2005-05-19 2005-05-19 Method and device for holding a recorded after a starting operation of a loom, in particular air jet loom weft thread
PCT/DE2006/000843 WO2006122531A1 (en) 2005-05-19 2006-05-17 Method and device for maintaining a weft thread which is introduced into a weaving machine, in particular an air-jet weaving machine, after the starting process

Publications (2)

Publication Number Publication Date
EP1899516A1 EP1899516A1 (en) 2008-03-19
EP1899516B1 true EP1899516B1 (en) 2011-02-02

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EP06742351A Not-in-force EP1899516B1 (en) 2005-05-19 2006-05-17 Method and device for maintaining a weft thread which is introduced into a weaving machine, in particular an air-jet weaving machine, after the starting process

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US (1) US7650913B2 (en)
EP (1) EP1899516B1 (en)
JP (1) JP2008540865A (en)
CN (1) CN101389798B (en)
AT (1) ATE497552T1 (en)
DE (2) DE102005022955A1 (en)
WO (1) WO2006122531A1 (en)

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CN113981591A (en) * 2021-10-22 2022-01-28 浙江海鹰智能科技有限公司 High-speed air-jet loom for weaving flannelette

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Also Published As

Publication number Publication date
JP2008540865A (en) 2008-11-20
DE502006008850D1 (en) 2011-03-17
CN101389798A (en) 2009-03-18
US7650913B2 (en) 2010-01-26
DE102005022955A1 (en) 2006-11-23
ATE497552T1 (en) 2011-02-15
CN101389798B (en) 2011-04-06
EP1899516A1 (en) 2008-03-19
WO2006122531A1 (en) 2006-11-23
US20090120527A1 (en) 2009-05-14

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