EP1899516A1 - 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

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Publication number
EP1899516A1
EP1899516A1 EP06742351A EP06742351A EP1899516A1 EP 1899516 A1 EP1899516 A1 EP 1899516A1 EP 06742351 A EP06742351 A EP 06742351A EP 06742351 A EP06742351 A EP 06742351A EP 1899516 A1 EP1899516 A1 EP 1899516A1
Authority
EP
European Patent Office
Prior art keywords
weft
weft thread
shed
sensor
threads
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06742351A
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German (de)
French (fr)
Other versions
EP1899516B1 (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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Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP1899516A1 publication Critical patent/EP1899516A1/en
Application granted granted Critical
Publication of EP1899516B1 publication Critical patent/EP1899516B1/en
Not-in-force legal-status Critical Current
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Classifications

    • 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

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

Verfahren und Vorrichtung zum Halten eines nach einem Startvorgang einer Webmaschine, insbesondere Luftdüsenwebmaschine eingetragenen Method and device for holding an entered after a starting process of a loom, in particular air jet loom
SchussfadensWeft
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 the starting process 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 insertion of the weft thread is monitored by at least one sensor. The weaving machine is operated in slow motion after each starting process during at least the first weaving cycle.
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 inserted weft thread is held on the output side of the shed at least until it is tied against warping back into the shed by warp threads.
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.Several weft detection and stretching devices are already known, e.g. from DE 198 02 254 C1 and DE 198 10 129 B4. However, these documents do not deal with the behavior of weft yarns during weft insertion in different speed ranges of the weaving machine, e.g. when the weaving machine is restarted.
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 ~\ Die vorbeschriebene Technologie beim Betreiben von Luftdüsenwebmaschinen ist unter dem Begriff „Einzelschussautomatik" seit geraumer Zeit bekannt.When producing selected fabrics, such as jeans fabrics and twill weaves on air jet weaving machines, it has proven to be advantageous, especially with regard to the achievement of a woven fabric without contact points, after each start of the weaving machine, the first weaving cycle, that is, based on the angle of rotation of the weaving machine Main drive shaft, to run the first full rotation of the main drive shaft in slow motion, and that with less than 200 min ~ \ The above-described technology for operating air jet looms has been known for some time under the term "single-shot automatic".
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. 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 ist.In the case of an air jet weaving machine, the weft insertion process itself is not affected by the slow speed; With regard to the time required for this, the weft thread is inserted as if the air jet weaving machine were already operating at a predetermined operating speed immediately after its starting process. The weft thread entered into the shed over a width of a few milliseconds over the fabric width is to be held by suitable means on the output side of the shed, i.e. on the side of the shed opposite to the weft thread entry, until it hits the fabric edge from the reed and from the shed-forming warp threads are tied.
In Luftdüsenwebmaschinen wird der eingetragene Schussfaden auszugsseitig desIn air jet looms, the weft thread entered is extracted from the
Webfaches bekanntermaßen durch pneumatisch wirkende Streck- oder Saugdüsen gehalten.The shed is known to be held by pneumatically acting stretching or suction nozzles.
Bei der Verarbeitung von Schussgarnen 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. In einem solchen Falle „springt" der eintragsseitig verbleibende Teil des Schussfadens in das noch nicht vollständig geschlossene Webfach zurück und produziert dadurch einen Fehler im Gewebe.When processing weft yarns with a relatively low tensile strength, it can be determined that during the weaving cycle immediately following the start of the weaving machine, in which the weaving machine is operated at slow speed, the weft thread in question is impaired under the action of the holding means in such a way that a weft thread breakage before setting of the weft thread occurs through the warp threads. In such a case, the part of the weft thread remaining on the entry side "jumps" back into the loom not yet fully closed, thereby producing an error in the fabric.
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 of being able to process low-tensile strength weft yarns on weaving machines, in particular air-jet weaving machines which are operated in slow speed in the first weaving cycle after a weaving machine start.
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 weft thread entered into the shed is tied off by separate warp threads before the setting by the warp threads, and that the setting takes place locally at least at one position of the shed after its arrival.
Zum Abbinden des Schussfadens können bekannte, individuell steuerbare Gewebekanten- und Drehereinrichtungen sowie Leisten- oder Fangleistenapparate verwendet werden.Known, individually controllable fabric edge and leno devices, as well as strips or catch strips, can be used to bind the weft thread.
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 turning devices, for example so-called rotary edge turning devices, as are known from EP 0 674 031 B2, the rotating edge turning device driven by an electric motor, which guides the separate binding threads, receives a electrical signal from the sensor monitoring the entry of the weft thread into 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.Thereupon, at least one of the rotary edge rotators will bind the inserted weft before the tying by means of the warp threads by means of the at least two tying 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. 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 Schussgarne vermieden werden können. Das zur Ansteuerung der über die Webbreite mehrfach angeordnetenThrough a multiple arrangement of such rotary edge rotators provided over the weaving width of the fabric to be produced, the inserted weft thread can be tied several times over its length in the non-closed shed, that is to say at different positions over the weaving width. With the multiple setting of the weft thread, it is advantageously achieved that the drawing force of the drawing or suction nozzle acting on the inserted weft thread can be differentially reduced and weft thread breaks can also be avoided during the slow running of the weaving machine when processing weft yarns with low tensile strength. That to control the multiple arranged over the weaving width
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.In a further embodiment of the method according to the invention, the necessary electrical signal can be triggered by a sensor of the weft thread store assigned to each air jet weaving machine, depending on a predeterminable number of turns of the weft thread reserve held on the weft thread store on each weft thread store.
Denkbar ist femer, dass das notwendige Signal von einem Sensor ausgelöst wird, der die Ankunft des Schussfadens ausgangsseitig des Webfaches überwacht. Im letzteren Fall würde das Abbinden des eingetragenen Schussfadens durch die von den Drehereinrichtungen geführten Abbindefäden gleichzeitig erfolgen. 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.It is also conceivable that the necessary signal is triggered by a sensor that monitors the arrival of the weft on the output side of the shed. In the latter case, the weft thread being tied would be carried out simultaneously by the tying threads guided by the turning devices. When at least one first signal is triggered by the relevant sensor of the weft thread store and by further subsequent signal formation, the weft thread in the direction of the exit of the shed can be tied one after the other in time by further binding threads of this type which provide twisting devices.
Zur Durchführung des Verfahrens auf einer Luftdüsenwebmaschine ist die Verwendung bekannter, individuell steuerbarer Gewebekanten- und Drehereinrichtungen und die Verwendung gesteuerter Gewebe- und Fangleistenapparate vorgesehen. 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. 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. 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 order to carry out the method on an air jet weaving machine, the use of known, individually controllable fabric edging and turning devices and the use of controlled fabric and safety edge apparatuses are provided. The electrical control of the drive of the individually controllable fabric edge and leno devices takes place by means of an electrical signal which is emitted by at least one sensor monitoring the weft thread entry. Such a sensor is part of every weft store, which has a weft reserve for weft insertion into the shed of the air jet loom. Such a sensor can also be part of the weft monitor arranged at the exit of the shed. In a further embodiment of the invention, the sensor can also be arranged in the region of the entry path lying between the weft thread store and the weft thread monitor and can be 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 erstenWith the solution according to the invention, it is now advantageously possible for the first time on weaving machines, in particular air-jet weaving machines, in each case in the first
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.Weaving cycle after a machine start in slow motion, the weft thread entered during the first weaving cycle is tied off by binding threads at selectable positions between the entrance and exit of the shed before it is tied by the warp threads. This largely prevents a weft thread breakage, which results in the weft thread springing back into the shed.
Die Erfindung wird nachfolgend an einem Ausführungsbeispiel näher erläutert.The invention is explained in more detail below using an exemplary embodiment.
In den Zeichnungen zeigen:The drawings show:
Figur 1 eine funktionale Einheit einer Luftdüsenwebmaschine mit Mitteln zumFigure 1 is a functional unit of an air jet loom with means for
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 demEntering a weft in the shed, with means for detecting the weft on the exit side of the shed and with means for tying the weft in a position between the
Ein- und Ausgang des Webfaches,Entrance and exit of the shed,
Figur 2 eine Ansicht X nach Figur 1 mit einem durch Abbindefäden abgebundenen Schussfaden bei geöffnetem Webfach.Figure 2 is a view X of Figure 1 with a weft tied by binding threads with the shed open.
Ein in Figur 1 auf einer Luftdüsenwebmaschine herzustellendes Gewebe 1 besteht aus Kettfäden 2 und Schussfäden 3.A fabric 1 to be produced in FIG. 1 on an air jet weaving machine 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 dasThe warp threads 2 form a shed 4 by shed forming means 10. The weft 3 is inserted into the shed 4 by means of at least one weft insertion means 5 Weft insertion channel 6a, see also Figure 2, a reed 6 and thus in the
Webfach 4 eingetragen.Shed 4 entered.
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 1a desOn the output side of the shed 4, a length section of the weft thread 3 is fed through a pneumatically active weft thread stretching device 7 until the weft thread is struck by the reed 6 against the stop edge 1a of the
Gewebes 1 und bis zu dessen Abbinden durch die Kettfäden 2 gestreckt gehalten.Fabric 1 and held stretched by the warp threads 2 until it sets.
Bei Luftdüsenwebmaschinen, die im Hinblick auf das Vermeiden einer sogenanntenIn air jet looms that are designed to avoid a so-called
Anlaufstelle im Gewebe im ersten Webzyklus nach einem Webmaschinenstop imContact point in the fabric in the first weaving cycle after a weaving machine stop in
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.If the machine is operated at slow speed, the tensile force exerted on the weft thread by a pneumatically acting stretching device 7 can lead to a weft thread break as long as the weft thread is not tied by the warp threads 2.
Unerwünschte Unterbrechungen des Webprozesses sind die Folgen.The consequences are undesirable interruptions in the weaving process.
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 dieWith the binding of the weft thread 3 mentioned by binding threads 8 at one or more suitable positions between the entrance 4a and the exit 4b of the shed 4, the relevant weft thread can be attached to the shank until it strikes
Anschlagkante des Gewebes 1 und bis zu dessen Abbinden durch die Kettfäden 2 gehalten werden.Stop edge of the fabric 1 and are held by the warp threads 2 until it is tied.
Zur Ausführung dieser Vorgehensweise ist, wie in Figur 1 dargestellt, an geeigneterAs shown in FIG. 1, it is more appropriate to carry out this procedure
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.Position in the area of the warp threads 2 is a known rotator device used as a binding device 9, the means of which guide the binding threads 8 are connected to an individually controllable electric motor drive.
Figur 2 zeigt die Abbindeeinrichtung 9 im Bereich der Kettfäden 2.FIG. 2 shows the binding device 9 in the area 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 einerTo form the shed 4, the warp threads 2 are guided through eyelets 10a of healds 10. The healds 10 can be one of harness cords
Jacquardeinrichtung oder solche von Webschäften sein.Jacquard device or those of heald frames.
Das in der sogenannten Webblattstütze 11 aufgenommene Webblatt 6 besitzt einenThe reed 6 received in the so-called reed support 11 has one
Schussfadeneintragskanal 6a.Weft insertion channel 6a.
Bei geöffnetem Webfach 4 ist der Schussfaden 3 in den Schussfadeneintragskanal 6a des Webblattes 6 eingetragen.When the shed 4 is open, the weft 3 is inserted 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.The device 9, e.g. a rotary edge turner constructed and controllable according to European Patent 0 674 031 B2, guides binding threads 8 in the manner of warp threads 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 electric motor drive of the device 9 receives, for example, from a sensor, not shown here, which monitors the entry of the weft thread 3 an electrical signal as soon as possible after the insertion of the weft thread and while the weaving machine is running slowly.
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 1 a des Gewebes 1 angeschlagen und durch die Kettfäden 2 abgebunden ist. By e.g. A half rotation of the rotating disc 9b, which guides the binding threads 8 in eyelets 9a, is carried out on the basis of this signal before the weft thread 3 is tied before the weft thread inserted during slow running of the weaving machine is struck against the stop edge 1a of the fabric 1 and tied by the warp threads 2.

Claims

Patentansprüche Claims
1. Verfahren zum Halten eines nach einem Startvorgang einer Webmaschine, insbesondere Luftdüsenwebmaschine innerhalb des ersten Webzyklus in das Webfach eingetragenen Schussfadens, wonach der Eintrag des Schussfadens von wenigstens einem Sensor überwacht wird, wonach die Webmaschine nach jedem Startvorgang während wenigstens des ersten Webzyklus im Langsamlauf betrieben wird und wonach der wenigstens erste eingetragene Schussfaden ausgangsseitig des Webfaches zumindest bis zu dessen Abbinden durch Kettfäden gegen Zurückspringen in das Webfach gehalten wird, dadurch gekennzeichnet, dass der eingetragene Schussfaden zeitlich vor dem Abbinden durch die Kettfäden von separaten Abbindefäden abgebunden wird, dass das Abbinden durch die Abbindefäden örtlich an wenigstens einer Position des Webfaches nach dessen Eingang erfolgt und dass das Abbinden mittels der separaten Abbindefäden in Abhängigkeit eines Signals des den Eintrag des1. A method for holding a weft thread inserted into the shed after a starting process of a weaving machine, in particular an air-jet weaving machine, after which the entry of the weft thread is monitored by at least one sensor, after which the weaving machine is operated in slow motion after each starting process during at least the first weaving cycle and according to which the at least first inserted weft thread is held on the output side of the shed at least until it is tied by warp threads against jumping back into the shed, characterized in that the inserted weft thread is tied by separate tying threads prior to tying by the warp threads, that the tying by the binding threads take place locally at at least one position of the shed after it has been received and that the binding takes place by means of the separate binding threads as a function of a signal of the entry of the
Schussfadens überwachenden, wenigsten einen Sensors erfolgt.Weft thread monitoring, at least one sensor.
2. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass das Signal bei Vorhandensein einer vorbestimmbaren Windungszahl einer auf einem Schussfadenspeicher vorgehaltenen Schussfadenreserve ausgelöst wird.2. The method according to claim 2, characterized in that the signal is triggered in the presence of a predetermined number of turns of a weft reserve held on a weft store.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass das Signal bei Ankunft des Schussfadens ausgangsseitig des Webfaches ausgelöst wird.3. The method according to claim 2, characterized in that the signal is triggered on the output side of the shed upon arrival of the weft.
4. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Abbinden des Schussfadens durch die Abbindefäden mehrfach über die herzustellende Gewebebreite erfolgt.4. The method according to any one of claims 1 to 4, characterized in that the setting of the weft thread by the binding threads is carried out several times over the fabric width to be produced.
5. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass das mehrfache Abbinden des Schussfadens durch die Abbindefäden gleichzeitig erfolgt.5. The method according to claim 5, characterized in that the multiple setting of the weft takes place simultaneously through the setting threads.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass das mehrfache Abbinden des Schussfadens durch die Abbindefäden in Richtung des Schussfadeneintrags zeitlich nacheinander erfolgt. 6. The method according to claim 5, characterized in that the multiple setting of the weft thread by the binding threads in the direction of the weft thread entry takes place successively in time.
7. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 6 auf einer Webmaschine, insbesondere Luftdüsenwebmaschine, der Schussfadenspeicher zugeordnet sind und wobei das Eintragen des Schussfadens durch wenigstens einen Sensor überwacht wird, gekennzeichnet durch die Verwendung bekannter, individuell steuerbarer Gewebekanten- und7. Device for performing the method according to one of claims 1 to 6 on a loom, in particular air jet loom, the weft storage are assigned and wherein the insertion of the weft is monitored by at least one sensor, characterized by the use of known, individually controllable fabric edges and
Drehereinrichtungen oder Leisten- und Fangleistenapparate, als Abbindeeinrichtung (9).Turning devices or strips and catch strips, as a binding device (9).
8. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der wenigstens eine Sensor Bestandteil der Schussfadenspeicher ist.8. The device according to claim 8, characterized in that the at least one sensor is part of the weft store.
9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der wenigstens eine Sensor Bestandteil eines ausgangsseitig des Webfaches (4) angeordneten Schussfadenwächters (7) ist.9. The device according to claim 8, characterized in that the at least one sensor is part of a weft monitor (7) arranged on the output side of the shed (4).
10. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der Sensor ein im Bereich des Schussfadeneintrags angeordneter Längenmesssensor ist. 10. The device according to claim 8, characterized in that the sensor is a length measuring sensor arranged in the region of the weft thread entry.
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)

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EP1899516A1 true EP1899516A1 (en) 2008-03-19
EP1899516B1 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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Also Published As

Publication number Publication date
US7650913B2 (en) 2010-01-26
JP2008540865A (en) 2008-11-20
ATE497552T1 (en) 2011-02-15
CN101389798A (en) 2009-03-18
CN101389798B (en) 2011-04-06
DE102005022955A1 (en) 2006-11-23
WO2006122531A1 (en) 2006-11-23
EP1899516B1 (en) 2011-02-02
US20090120527A1 (en) 2009-05-14
DE502006008850D1 (en) 2011-03-17

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