EP1016745A2 - Controlled weft thread feeding and clamping device for weaving machines - Google Patents

Controlled weft thread feeding and clamping device for weaving machines Download PDF

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Publication number
EP1016745A2
EP1016745A2 EP99119334A EP99119334A EP1016745A2 EP 1016745 A2 EP1016745 A2 EP 1016745A2 EP 99119334 A EP99119334 A EP 99119334A EP 99119334 A EP99119334 A EP 99119334A EP 1016745 A2 EP1016745 A2 EP 1016745A2
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EP
European Patent Office
Prior art keywords
actuator
weft
clamping device
clamp
clamping
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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
EP99119334A
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German (de)
French (fr)
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EP1016745A3 (en
EP1016745B1 (en
Inventor
Stephan Arndt
Horst Häussler
Kurt Motz
Peter Schiller
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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Publication of EP1016745A3 publication Critical patent/EP1016745A3/en
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Publication of EP1016745B1 publication Critical patent/EP1016745B1/en
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    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/125—Weft holding devices
    • 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
    • D03D47/38—Weft pattern mechanisms

Definitions

  • the invention relates to a controllable weft feeder and clamping device in which a thread clamp is present several times, according to the features of the preamble of Claim 1.
  • the weft feeder and clamping device consists of a plurality of feed levers, each lever of which has a weft clamp at its free end, and each lever can be brought by suitable means into a reference plane defined for the feeding of the weft thread to a weft insertion member and in the reference plane from one Rest position is pivotally movable in at least one working position, which can be, for example, the weft feed position to the rapier of a rapier weaving machine.
  • the respective weft thread to be presented to the weft insertion element is clamped between a first and a second clamping part in the respective weft thread clamp of the respective feed lever.
  • the weft thread clamped in the thread clamp in question is not to be presented to the gripper at every weft insertion; this means that the feed lever with the clamped weft thread is moved up and down several times in different vertical positions relative to the reference plane in the aforementioned device. These movements can cause the weft to be pulled out of the clamp and consequently to interrupt the weaving process.
  • Another disadvantage of the known thread clamps is that the weft thread has to be pulled out of the thread clamp when the gripper takes it over. This process can damage the structure of the weft thread in such a way that the end of the thread is released and individual filaments remain in the thread clamp or that the weft thread breaks.
  • the clamping element of the thread clamp is an actuator connected to the respective weft feed lever.
  • the weft feeder and clamping device has a plurality of weft feeder levers that can be controlled in a reference plane, at the free end of which a respective actuator designed and controllable according to the invention is arranged, of which the first clamping element is the respective feeder lever of the device and that second clamping element is the actuator itself or a clamping element that is operatively connected to an actuator via, for example, a motion transmission element. If the actuator itself forms the second clamping element, then this is, for example, a piezoelectric element which communicates with a program, memory and control unit of the weaving machine in a signal-transmitting manner.
  • a piezoelectric actuator can be arranged in a stationary manner on the respective weft feed lever, the actuating movements of which act on the movably designed second clamping element by means of a movement transmission element; the piezoelectric actuator is not itself the second clamping element here.
  • the actuator interacting with the first clamping element of the thread clamp can a piezoelectric component, an electromagnetic component, a permanent magnetic component Component, a pneumatically or hydroelectrically controllable component or a Be an electric motor.
  • the Total angle of rotation range is less than 90 degrees.
  • FIGS 1 to 1c show a weft feed lever 4a with its individual parts of a weft feeder and clamping device 4 shown schematically in Figure 2.
  • the structure and function of such a device 4 is shown in DE-GM 297 16 310, the description of which is the subject of this Patent application is declared.
  • a thread clamp 1 is firmly connected to the end thereof by means known per se.
  • the thread clamp 1 consists of a rigid clamping element 1 a, which on the connection side to the feed lever 4 a has a free end encompassing the c-shaped profile section 1 a ′, which at the same time holds the wire-side end area of a second clamping element 1 b designed as a piezoelectric element 2 or with the free one End and the profile section 1a 'connects.
  • this end region can be cast or glued by a suitable means.
  • the other free end region of the piezoelectric element 2 carries a wear-resistant weft thread clamping body 5 which has a thread inlet slope 5a.
  • a thread inlet slope 1a ′′ also has the free end of the rigid clamping element 1a, which additionally has a stop 6 that limits the piezoelectric element 2 in its opening movement.
  • the piezoelectric thread clamp 1 is controlled via lines 13, 14 in a signal-transmitting manner by a program, storage and control unit 10 of the weaving machine shown in FIG.
  • the actuator 2 which is also a piezoelectric actuator or an actuator according to claims 2 to 6, is mounted near the adjusting shaft 4b of the weft feeder and clamping device 4 on the respective feed lever 4a.
  • a movement transmission element 3 is arranged between the actuator 2 and the movable clamping element 1b of the thread clamp 1 and transmits the actuating movements of the actuator 2, see also double arrow 3a, to the clamping element 1b in the sense of an opening or closing movement of the thread clamp 1.
  • Actuator 2 is controlled by program, memory and control unit 10 via signal line 10a, a contact strip 15 and a flexible cable 16. The pivoting movement of the weft thread feed lever 4a from the rest position 7 into the working position 8 shown in dashed lines takes place by means of the adjusting shaft 4b of the device 4.
  • the embodiment shown in Figure 3 corresponds in structure and operation of the Example shown in Figure 1 with the difference that the signal transmission from the Control unit 10 on the actuator 2 is not wired, but contactless e.g. inductive he follows.
  • FIG. 4 shows the swiveling or rotation angle range 12 of a weft thread feed lever 4a with thread clamp 1 of the device 4, which lies in a reference plane.
  • the structure and the mode of operation of the thread clamp 1 with the clamping element 1a, 1b can be seen from the description of FIGS. 3 and 4, so that here only the representation of the position 7 to be assumed by the thread clamp 1 on the one hand relative to the cutting plane 17a of a weft scissors 17 and on the other hand the representation of the thread clamping positions 8 and 9 will be discussed. It is important that the positions 7, 8 and 9 lie within the rotation angle range 12 lying in a reference plane, specifically for each feed lever 4a with thread clamp 1 of the device 4.
  • the position 7 of the thread clamp 1 is the rest position
  • the position 8 is the position in which the weft thread 11 is presented to a rapier of a rapier weaving machine, not shown, and is transferred by the controlled opening of the thread clamp
  • the position 9 is the one in a weft 11 held ready is still picked up and held in place by the weft thread 11 inserted into a shed and attached to the edge 18a of a fabric 18 by controlled opening and closing of the thread clamp 1 until the weft 11 picked up is held by the ready weft thread the weft scissors 17 is cut off.
  • the feed lever 4a in question is moved back into the rest position 7 with the thread clamp 1.
  • the weft thread 11 to be presented to the gripper is held by the relevant thread clamp 1 until, according to a control program stored in the unit 10, this weft thread is to be presented to the gripper.
  • FIG. 5 shows a further possibility for transmitting the opening and closing movement of the thread clamp 1 from the actuator 2 to the thread clamp 1.
  • the actuator 2 is, for example, an electromagnetic unit which is controlled by the control unit 10 in the sense of the aforementioned exemplary embodiments and which executes the opening and closing movement of the thread clamp 1 by means of the movement transmission element 3 which forms a lever mechanism.

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

Abstract

A weft thread clamp for a weft thread presenting lever is positively actuated to selectively open or close the clamp and thereby release or hold the weft thread respectively. To achieve this, a second clamp element is movable or deflectable relative to a first clamp element of the clamp. The movable second clamp element may be directly embodied as an actuator, or may be driven by an actuating motion provided by an actuator located remotely from the clamp on the lever. In the latter case, a motion transmission arrangement such as a sheathed push-pull cable or a rod linkage operatively connects the actuator to the movable second clamp element. The actuator may be a piezoelectric, electromagnetic, hybrid pneumatic-electric, or hybrid hydraulic-electric device, or an electric motor. The loom control unit is connected to the actuator for providing control signals thereto.

Description

Die Erfindung betrifft eine steuerbare Schussfadenzubringer- und -klemmvorrichtung, in der eine Fadenklemme mehrfach vorhanden ist, nach den Merkmalen des Oberbegriffs von Patentanspruch 1.The invention relates to a controllable weft feeder and clamping device in which a thread clamp is present several times, according to the features of the preamble of Claim 1.

Die Schussfadenzubringer- und -klemmvorrichtung besteht aus mehreren Zubringerhebeln, wovon jeder Hebel an seinem freien Ende eine Schussfadenklemme besitzt, und wobei jeder Hebel durch geeignete Mittel in eine für das Zubringen des Schussfadens zu einem Schussfadeneintragsorgan festgelegte Bezugsebene bringbar ist, und in der Bezugsebene aus einer Ruheposition schwenkbeweglich in wenigstens eine Arbeitsposition bewegbar ist, die z.B. die Schussfaden-Vorlegeposition zu dem Greifer einer Greiferwebmaschine sein kann. Der jeweilige dem Schussfadeneintragsorgan vorzulegende Schussfaden ist in der jeweiligen Schussfadenklemme des jeweiligen Zubringerhebels zwischen einem ersten und einem zweiten Klemmteil geklemmt.
Die Arbeitsfunktionen Klemmen und Freigeben des Schussfadens werden dadurch bewerkstelligt, dass der betreffende Zubringerhebel mit Schussfadenklemme den in ein Webfach eingetragenen und an die Gewebekante angeschlagenen Schussfaden in einer von der Ruhe- und Arbeitsposition abweichenden Zwischenposition beim Anschlagen des Schussfadens zwangsläufig zwischen den Klemmteilen aufnimmt.
Bei einem derartigen Arbeitsablauf ist nicht gesichert, dass der Schussfaden zuverlässig geklemmt ist und es ist nicht gesichert, dass das Klemmen auch unabhängig vom Zeitpunkt des Schussfadenvorlegens aufrechterhalten werden kann.The weft feeder and clamping device consists of a plurality of feed levers, each lever of which has a weft clamp at its free end, and each lever can be brought by suitable means into a reference plane defined for the feeding of the weft thread to a weft insertion member and in the reference plane from one Rest position is pivotally movable in at least one working position, which can be, for example, the weft feed position to the rapier of a rapier weaving machine. The respective weft thread to be presented to the weft insertion element is clamped between a first and a second clamping part in the respective weft thread clamp of the respective feed lever.
The work functions of clamping and releasing the weft thread are accomplished in that the feed lever in question with the weft thread clamp inevitably picks up the weft thread, which has been inserted into a shed and attached to the fabric edge, in an intermediate position that deviates from the rest and working position when the weft thread is struck, between the clamping parts.
In such a workflow, it is not ensured that the weft thread is reliably clamped and it is not ensured that the clamping can also be maintained regardless of the time at which the weft thread is placed.

Beispiel:Example:

Bei einer Schussfadenzubringer- und -klemmvorrichtung gemäß dem DE-Gebrauchsmuster 297 16 310 U1 mit z.B. 6 Schussfadenzubringerhebel ist der in der betreffenden Fadenklemme geklemmte Schussfaden nicht bei jedem Schusseintrag dem Greifer vorzulegen; das bedeutet, dass der Zubringerhebel mit dem geklemmten Schussfaden mehrfach in unterschiedliche vertikale Positionen relativ zu der Bezugsebene in der vorgenannten Vorrichtung auf und ab bewegt wird. Diese Bewegungen können dazu führen, dass der Schussfaden aus der Klemme gezogen wird und es folglich zu einer Unterbrechung des Webprozesses kommt.
Ein weiterer Nachteil der bekannten Fadenklemmen besteht darin, dass der Schussfaden beim Übernehmen durch den Greifer aus der Fadenklemme gezogen werden muss. Dieser Vorgang kann zu Beschädigungen der Struktur des Schussfadens in der Art führen, dass das Fadenende aufgelöst wird und einzelne Filamente in der Fadenklemme verbleiben oder dass es zu einem Schussfadenbruch kommt.In the case of a weft thread feeder and clamping device according to DE utility model 297 16 310 U1 with, for example, 6 weft thread feeder levers, the weft thread clamped in the thread clamp in question is not to be presented to the gripper at every weft insertion; this means that the feed lever with the clamped weft thread is moved up and down several times in different vertical positions relative to the reference plane in the aforementioned device. These movements can cause the weft to be pulled out of the clamp and consequently to interrupt the weaving process.
Another disadvantage of the known thread clamps is that the weft thread has to be pulled out of the thread clamp when the gripper takes it over. This process can damage the structure of the weft thread in such a way that the end of the thread is released and individual filaments remain in the thread clamp or that the weft thread breaks.

Vor diesem Hintergrund ist es Aufgabe der Erfindung, eine Schussfadenklemme für eine nach dem DE-GM 297 16 310 offenbarte Schussfadenzubringer- und -klemmvorrichtung zu schaffen, die ein definiertes Klemmen und Freigeben des Schussfadens bei Vermeidung der Nachteile bekannter Fadenklemmen ermöglicht.Against this background, it is an object of the invention to provide a weft clamp for a according to DE-GM 297 16 310 disclosed weft feeder and clamping device create a defined clamping and release of the weft thread while avoiding the Disadvantages of known thread clamps allows.

Die Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst.
Vorteilhafte Ausbildungen der Erfindung sind in den abhängigen Ansprüchen 2 bis 13 beschrieben.The object is achieved by the characterizing features of claim 1.
Advantageous embodiments of the invention are described in the dependent claims 2 to 13.

Nach dem Anspruch 1 ist das Klemmelement der Fadenklemme ein mit dem jeweiligen Schussfadenzubringerhebel in Verbindung stehender Aktuator. Die Schussfadenzubringer- und -klemmvorrichtung besitzt, wie aus DE 297 16 310 U1 bekannt, mehrere in eine Bezugsebene steuerbare Schussfadenzubringerhebel, an deren freiem Ende jeweils ein erfindungsgemäß ausgebildeter und steuerbarer Aktuator angeordnet ist, wovon das erste Klemmelement der jeweilige Zubringerhebel der Vorrichtung ist und das zweite Klemmelement der Aktuator selbst oder ein mit einem Aktuator über z.B. ein Bewegungsübertragungsglied in Wirkverbindung stehendes Klemmelement ist.
Wenn der Aktuator selbst das zweite Klemmelement ausbildet, dann ist dieses z.B. ein piezoelektrisches Element, das mit einer Programm-, Speicher- und Steuereinheit der Webmaschine signalübertragend in Verbindung steht.
In einem anderen Falle kann erfindungsgemäß ein piezoelektrischer Aktuator ortsfest auf dem jeweiligen Schussfadenzubringerhebel angeordnet sein, wobei dessen Stellbewegungen mittels eines Bewegungsübertragungsgliedes auf das beweglich ausgebildete zweite Klemmelement wirken; der piezoelektrische Aktuator ist hier also nicht selbst das zweite Klemmelement.According to claim 1, the clamping element of the thread clamp is an actuator connected to the respective weft feed lever. As known from DE 297 16 310 U1, the weft feeder and clamping device has a plurality of weft feeder levers that can be controlled in a reference plane, at the free end of which a respective actuator designed and controllable according to the invention is arranged, of which the first clamping element is the respective feeder lever of the device and that second clamping element is the actuator itself or a clamping element that is operatively connected to an actuator via, for example, a motion transmission element.
If the actuator itself forms the second clamping element, then this is, for example, a piezoelectric element which communicates with a program, memory and control unit of the weaving machine in a signal-transmitting manner.
In another case, according to the invention, a piezoelectric actuator can be arranged in a stationary manner on the respective weft feed lever, the actuating movements of which act on the movably designed second clamping element by means of a movement transmission element; the piezoelectric actuator is not itself the second clamping element here.

Der mit dem ersten Klemmelement der Fadenklemme zusammenwirkende Aktuator kann dabei ein piezoelektrisches Bauteil, ein elektromagnetisches Bauteil, ein permanent-magnetisches Bauteil, ein pneumo- oder hydroelektrisch steuerbares Bauteil oder ein Elektromotor sein.The actuator interacting with the first clamping element of the thread clamp can a piezoelectric component, an electromagnetic component, a permanent magnetic component Component, a pneumatically or hydroelectrically controllable component or a Be an electric motor.

In weiterer Ausgestaltung der Vorrichtung sind nach Patentanspruch 1 auch die Schwenkbewegungen der einzelnen Schussfadenzubringerhebel in der Bezugsebene und hier wiederum innerhalb eines Drehwinkelbereiches frei programmierbar, wobei der Gesamtdrehwinkelbereich weniger als 90 Winkelgrade beträgt.In a further embodiment of the device are according to claim 1 Swiveling movements of the individual weft feeder levers in the reference plane and here again freely programmable within a rotation angle range, the Total angle of rotation range is less than 90 degrees.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher beschrieben.The invention is described in more detail below using an exemplary embodiment.

Es zeigen:

Figur 1
den Schussfadenzubringerhebel mit einem direkt als Schussfadenklemme wirkenden Aktuator,
Figur 1a
den Schussfadenzubringerhebel als Klemmelement der Schussfadenklemme gemäß Figur 1,
Figur 1b
den Aktuatur der Schussfadenklemme als piezoelektrisches Bauteil gemäß Figur 1,
Figur 1c
ein mit dem piezoelektrischen Bauteil verbindbarer, verschleissfester Klemmkörper,
Figur 2
die schematische Darstellung der Draufsicht einer Schussfadenzubringer- und -klemmvorrichtung mit dem auf die Schussfadenklemme wirkenden Aktuator mit drahtgebundener Steuersignalübertragung,
Figur 3
die schematische Darstellung der Draufsicht einer Schussfadenzubringer- und -klemmvorrichtung mit dem auf die Schussfadenklemme wirkenden Aktuator mit kontaktloser Steuersignalübertragung,
Figur 4
den Schwenkwinkelbereich des in der Draufsicht schematisch darstellten Zubringerhebels einer Schussfadenzubringer- und -klemmvorrichtung gemäß Figur 2 und 3,
Figur 5
die schematische Darstellung der Seitenansicht einer Fadenklemme gemäß der Figuren 2 bis 4 mit hebelübersetzter Aktuatorbewegung auf das bewegliche Klemmelement.
Show it:
Figure 1
the weft feed lever with an actuator acting directly as a weft clamp,
Figure 1a
the weft feed lever as a clamping element of the weft clamp according to Figure 1,
Figure 1b
the actuation of the weft thread clamp as a piezoelectric component according to FIG. 1,
Figure 1c
a wear-resistant clamping body that can be connected to the piezoelectric component,
Figure 2
1 shows a schematic representation of the top view of a weft thread feeder and clamping device with the actuator acting on the weft thread clamp with wired control signal transmission,
Figure 3
1 shows the schematic representation of the top view of a weft thread feeder and clamping device with the actuator acting on the weft thread clamp with contactless control signal transmission,
Figure 4
2 the swivel angle range of the feed lever of a weft thread feeder and clamping device according to FIGS. 2 and 3, shown schematically in the top view,
Figure 5
the schematic representation of the side view of a thread clamp according to Figures 2 to 4 with lever-translated actuator movement on the movable clamping element.

Die Figuren 1 bis 1c zeigen einen Schussfadenzubringerhebel 4a mit seinen Einzelteilen einer gemäß Figur 2 schematisch dargestellten Schussfadenzubringer- und -klemmvorrichtung 4. Der Aufbau und die Funktion einer solchen Vorrichtung 4 geht aus dem DE-GM 297 16 310 hervor, dessen Beschreibung zum Gegenstand dieser Patentanmeldung erklärt wird.
Am freien Ende des Schussfadenzubringerhebels 4a ist eine Fadenklemme 1 über an sich bekannte Mittel fest mit dessen Ende verbunden.
Die Fadenklemme 1 besteht aus einem biegesteifen Klemmelement 1a, das verbindungsseitig zum Zubringerhebel 4a eine das freie Ende umgreifenden und c-förmig gebogenen Profilabschnitt 1a' besitzt, der zugleich den drahtseitigen Endbereich eines als piezoelektrisches Element 2 ausgebildeten zweiten Klemmelementes 1b hält bzw. mit dem freien Ende und dem Profilabschnitt 1a' verbindet. Zusätzlich kann dieser Endbereich durch ein geeignetes Mittel vergossen oder geklebt sein.
Der andere freie Endbereich des piezoelektrischen Elements 2 trägt einen eine Fadeneinlaufschräge 5a aufweisenden verschleissfesten Schussfadenklemmkörper 5.
Eine Fadeneinlaufschräge 1a'' besitzt ebenfalls das freie Ende des biegesteifen Klemmelements 1a, das zusätzlich einen das piezoelektrische Element 2 in seiner Öffnungsbewegung begrenzenden Anschlag 6 aufweist.
Die piezoelektrisch wirkende Fadenklemme 1 wird über die Leitungen 13, 14 signalübertragend von einer in der Figur 2 dargestellten Programm-, Speicher- und Steuereinheit 10 der Webmaschine angesteuert.Figures 1 to 1c show a weft feed lever 4a with its individual parts of a weft feeder and clamping device 4 shown schematically in Figure 2. The structure and function of such a device 4 is shown in DE-GM 297 16 310, the description of which is the subject of this Patent application is declared.
At the free end of the weft thread feed lever 4a, a thread clamp 1 is firmly connected to the end thereof by means known per se.
The thread clamp 1 consists of a rigid clamping element 1 a, which on the connection side to the feed lever 4 a has a free end encompassing the c-shaped profile section 1 a ′, which at the same time holds the wire-side end area of a second clamping element 1 b designed as a piezoelectric element 2 or with the free one End and the profile section 1a 'connects. In addition, this end region can be cast or glued by a suitable means.
The other free end region of the piezoelectric element 2 carries a wear-resistant weft thread clamping body 5 which has a thread inlet slope 5a.
A thread inlet slope 1a ″ also has the free end of the rigid clamping element 1a, which additionally has a stop 6 that limits the piezoelectric element 2 in its opening movement.
The piezoelectric thread clamp 1 is controlled via lines 13, 14 in a signal-transmitting manner by a program, storage and control unit 10 of the weaving machine shown in FIG.

In Figur 2 ist der Aktuator 2, der auch hier ein piezoelektrisch wirkender Aktuator oder ein nach den Patentansprüchen 2 bis 6 wirkender Aktuator ist, nahe der Stellwelle 4b der Schussfadenzubringer- und -klemmvorrichtung 4 auf dem jeweiligen Zubringerhebel 4a montiert. Zwischen dem Aktuator 2 und dem beweglichen Klemmelement 1b der Fadenklemme 1 ist ein Bewegungsübertragungsglied 3 eingeordnet, das die Stellbewegungen des Aktuators 2, siehe auch Doppelpfeil 3a, auf das Klemmelement 1b im Sinne einer Öffnungs- oder Schließbewegung der Fadenklemme 1 überträgt.
Die Ansteuerung des Aktuators 2 erfolgt von der Programm-, Speicher- und Steuereinheit 10 aus über die Signalleitung 10a, eine Kontaktleiste 15 und über ein flexibles Kabel 16.
Die Schwenkbewegung des Schussfadenzubringerhebels 4a aus der Ruhestellung 7 in die gestrichelt dargestellte Arbeitsstellung 8 erfolgt mittels der Stellwelle 4b der Vorrichtung 4.In Figure 2, the actuator 2, which is also a piezoelectric actuator or an actuator according to claims 2 to 6, is mounted near the adjusting shaft 4b of the weft feeder and clamping device 4 on the respective feed lever 4a. A movement transmission element 3 is arranged between the actuator 2 and the movable clamping element 1b of the thread clamp 1 and transmits the actuating movements of the actuator 2, see also double arrow 3a, to the clamping element 1b in the sense of an opening or closing movement of the thread clamp 1.
Actuator 2 is controlled by program, memory and control unit 10 via signal line 10a, a contact strip 15 and a flexible cable 16.
The pivoting movement of the weft thread feed lever 4a from the rest position 7 into the working position 8 shown in dashed lines takes place by means of the adjusting shaft 4b of the device 4.

Das in Figur 3 darstellte Ausführungsbeispiel entspricht im Aufbau und Wirkungsweise des in Figur 1 dargestellten Beispiels mit dem Unterschied, dass die Signalübertragung von der Steuereinheit 10 auf den Aktuator 2 nicht drahtgebunden, sondern kontaktlos z.B. induktiv erfolgt.The embodiment shown in Figure 3 corresponds in structure and operation of the Example shown in Figure 1 with the difference that the signal transmission from the Control unit 10 on the actuator 2 is not wired, but contactless e.g. inductive he follows.

Figur 4 zeigt den in einer Bezugsebene liegenden Schwenk- oder Drehwinkelbereich 12 eines Schussfadenzubringerhebels 4a mit Fadenklemme 1 der Vorrichtung 4.
Der Aufbau und die Wirkungsweise der Fadenklemme 1 mit dem Klemmelement 1a, 1b ist aus der Beschreibung der Figuren 3 und 4 entnehmbar, so dass hier lediglich auf die Darstellung der von der Fadenklemme 1 einzunehmenden Position 7 einerseits relativ zur Schneidebene 17a einer Schussfadenschere 17 und andererseits auf die Darstellung der Fadenklemmpositionen 8 und 9 eingegangen werden soll. Wichtig ist dabei, dass die Positionen 7, 8 und 9 innerhalb des in einer Bezugsebene liegenden Drehwinkelbereiches 12 liegen, und zwar für jeden Zubringerhebel 4a mit Fadenklemme 1 der Vorrichtung 4. FIG. 4 shows the swiveling or rotation angle range 12 of a weft thread feed lever 4a with thread clamp 1 of the device 4, which lies in a reference plane.
The structure and the mode of operation of the thread clamp 1 with the clamping element 1a, 1b can be seen from the description of FIGS. 3 and 4, so that here only the representation of the position 7 to be assumed by the thread clamp 1 on the one hand relative to the cutting plane 17a of a weft scissors 17 and on the other hand the representation of the thread clamping positions 8 and 9 will be discussed. It is important that the positions 7, 8 and 9 lie within the rotation angle range 12 lying in a reference plane, specifically for each feed lever 4a with thread clamp 1 of the device 4.

Die Position 7 der Fadenklemme 1 ist die Ruheposition, die Position 8 ist die Position, in der der Schussfaden 11 einem nicht dargestellten Greifer einer Greiferwebmaschine zur Übernahme vorgelegt wird und durch das gesteuerte Öffnen der Fadenklemme übergeben wird, und die Position 9 ist jene, in der ein bereitgehaltener Schussfaden 11 noch mit dem in ein Webfach eingetragenen und an die Kante 18a eines Gewebes 18 angeschlagenen Schussfadens 11 durch gesteuertes Öffnen und Schließen der Fadenklemme 1 aufgenommen und geklemmt gehalten wird, und zwar solange, bis der angeschlagene Schussfaden 11 vom bereitgehalten Schussfaden durch die Schussfadenschere 17 abgeschnitten ist. Nachfolgend wird der betreffende Zubringerhebel 4a mit der Fadenklemme 1 in die Ruheposition 7 zurückbewegt.
In der Position 7 wird der dem Greifer vorzulegende Schussfaden 11 solange von der betreffenden Fadenklemme 1 gehalten, bis gemäß eines in der Einheit 10 abgelegten Steuerprogramms dieser Schussfaden dem Greifer vorzulegen ist.The position 7 of the thread clamp 1 is the rest position, the position 8 is the position in which the weft thread 11 is presented to a rapier of a rapier weaving machine, not shown, and is transferred by the controlled opening of the thread clamp, and the position 9 is the one in a weft 11 held ready is still picked up and held in place by the weft thread 11 inserted into a shed and attached to the edge 18a of a fabric 18 by controlled opening and closing of the thread clamp 1 until the weft 11 picked up is held by the ready weft thread the weft scissors 17 is cut off. Subsequently, the feed lever 4a in question is moved back into the rest position 7 with the thread clamp 1.
In position 7, the weft thread 11 to be presented to the gripper is held by the relevant thread clamp 1 until, according to a control program stored in the unit 10, this weft thread is to be presented to the gripper.

Die Figur 5 zeigt eine weitere Möglichkeit zur Übertragung der Öffnungs- und Schließbewegung der Fadenklemme 1 von dem Aktuator 2 auf die Fadenklemme 1.
In dieser Figur ist der Aktuator 2 z.B. eine elektromagnetische Einheit, die im Sinne der vorgenannten Ausführungsbeispiele durch die Steuereinheit 10 angesteuert und die Öffnungs- und Schließbewegung der Fadenklemme 1 mittels des einen Hebelmechanismus ausbildenden Bewegungsübertragungsgliedes 3 ausgeführt wird. FIG. 5 shows a further possibility for transmitting the opening and closing movement of the thread clamp 1 from the actuator 2 to the thread clamp 1.
In this figure, the actuator 2 is, for example, an electromagnetic unit which is controlled by the control unit 10 in the sense of the aforementioned exemplary embodiments and which executes the opening and closing movement of the thread clamp 1 by means of the movement transmission element 3 which forms a lever mechanism.

ZEICHNUNGS-LEGENDEDRAWING LEGEND

0101
FadenklemmeThread clamp
01a01a
KlemmelementClamping element
01a'01a '
ProfilabschnittProfile section
01a''01a ''
FadeneinlaufschrägeThread entry slope
0202
AktuatorActuator
0303
BewegungsübertragungsgliedMotion transmission link
03a03a
DoppelpfeilDouble arrow
0404
Schussfadenzubringer- und -klemmvorrichtungWeft feeder and clamp
04a04a
SchussfadenzubringerhebelWeft feed lever
04b04b
StellwelleControl shaft
0505
KlemmkörperSprags
05a05a
FadeneinlaufschrägeThread entry slope
0606
Anschlagattack
0707
RuhepositionRest position
0808
ArbeitspositionWorking position
0909
ArbeitspositionWorking position
1010th
Programm-, Speicher- und SteuereinheitProgram, memory and control unit
10a10a
SignalleitungSignal line
1111
SchussfadenWeft
1212th
DrehwinkelbereichAngular range
1313
Kabelelectric wire
1414
Kabelelectric wire
1515
KontaktleisteContact bar
1616
Kabelelectric wire
1717th
SchussfadenschereWeft scissors
17a17a
SchneidebeneCutting plane
1818th
Gewebetissue
18a18a
GewebekanteFabric edge

Claims (13)

Steuerbare Schussfadenzubringer- und -klemmvorrichtung, insbesondere zum Zubringen eines Schussfadens (11) zu dem Greifer einer Greiferwebmaschine, mit mehreren Schussfadenzubringerhebeln (4a), wobei jeder Schussfadenzubringerhebel in eine Bezugsebene bewegbar ist, wobei das freie Ende jedes Schussfadenzubringerhebels eine Fadenklemme (1) mit einem ersten und einem zweiten Klemmelement (1a, 1b) besitzt, wovon wenigstens ein Klemmelement Arbeitsfunktionen zum Zwecke des Klemmens und Freigebens des in ein Webfach einzutragenden Schussfadens (11) ausführt, wobei ferner der jeweilige Schussfadenzubringerhebel (4a) mit der Fadenklemme (1) in der Bezugsebene nach einem in einer Programm-, Speicher- und Steuereinheit (10) abgelegten Steuerprogramm aus einer Ruhestellung (7) in wenigstens eine erste Arbeitsstellung (8) und in eine zweite Arbeitsstellung (9) schwenkbar ist, dadurch gekennzeichnet, dass das wenigstens eine Klemmelement der Fadenklemme (1) ein mit dem jeweiligen Schussfadenzubringerhebel (4a) in Verbindung stehender auf dem Schussfadenzubringerhebel angeordneter Aktuator (2) ist.Controllable weft feed and clamping device, in particular for feeding a weft (11) to the rapier of a rapier weaving machine, with a plurality of weft feed levers (4a), each weft feed lever being movable into a reference plane, the free end of each weft feed lever having a thread clamp (1) with a thread clamp (1) has first and a second clamping element (1a, 1b), of which at least one clamping element performs work functions for the purpose of clamping and releasing the weft thread (11) to be inserted into a shed, the respective weft feeder lever (4a) with the thread clamp (1) in the Reference plane according to a control program stored in a program, storage and control unit (10) can be pivoted from a rest position (7) into at least one first working position (8) and into a second working position (9), characterized in that the at least one clamping element the thread clamp (1) with the respective weft thread accessories nger lever (4a) is connected to the actuator arranged on the weft feed lever (2). Klemmvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Aktuator (2) ein piezoelektrischer Aktuator ist.Clamping device according to claim 1, characterized in that the actuator (2) is a piezoelectric actuator. Klemmvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Aktuator (2) ein elektromagnetisch gesteuerter Aktuator ist.Clamping device according to claim 1, characterized in that the actuator (2) is an electromagnetically controlled actuator. Klemmvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Aktuator (2) ein pneumoelektrisch gesteuerter Aktuator ist. Clamping device according to claim 1, characterized in that the actuator (2) is a pneumoelectrically controlled actuator. Klemmvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Aktuator (2) ein hydroelektrisch gesteuerter Aktuator ist.Clamping device according to claim 1, characterized in that the actuator (2) is a hydroelectrically controlled actuator. Klemmvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Aktuator (2) ein elektromotorisch gesteuerter Aktuator ist.Clamping device according to claim 1, characterized in that the actuator (2) is an electric motor-controlled actuator. Klemmvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Leistungs- und Signalübertragung zu dem Aktuator (2) drahtgebunden erfolgt.Clamping device according to one of claims 1 to 6, characterized in that the power and signal transmission to the actuator (2) is wired. Klemmvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Leistungs- und Signalübertragung zu dem Aktuator (2) kontaktlos erfolgt.Clamping device according to one of claims 1 to 6, characterized in that the power and signal transmission to the actuator (2) takes place without contact. Klemmvorrichtung nach den Ansprüchen 1 und 6, dadurch gekennzeichnet, dass der Aktuator (2) über wenigstens ein Bewegungsübertragungsglied (3) mit dem Klemmelement (1b) wirkverbunden ist.Clamping device according to claims 1 and 6, characterized in that the actuator (2) is operatively connected to the clamping element (1b) via at least one movement transmission member (3). Klemmvorrichtung nach den Ansprüchen 1 und 6, dadurch gekennzeichnet, dass die Klemmelemente (1a,1b) und der Aktuator (2) Bestandteil eines schwenkbeweglich angetriebenen Zubringerhebels (4a) einer steuerbaren Schussfadenzubringer- und Klemmvorrichtung (4) sind.Clamping device according to claims 1 and 6, characterized in that the clamping elements (1a, 1b) and the actuator (2) are part of a pivotably driven feed lever (4a) of a controllable weft thread feeder and clamping device (4). Klemmvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Öffnungshub des zweiten Klemmelements (1b) durch wenigstens einen Anschlag (6) begrenzt ist.Clamping device according to claim 1, characterized in that the opening stroke of the second clamping element (1b) is limited by at least one stop (6). Steuerbare Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Schwenken der Schussfadenzubringerhebel (4a) in der Bezugsebene frei programmierbar ist.Controllable device according to claim 1, characterized in that the pivoting of the weft feed lever (4a) in the reference plane is freely programmable. Steuerbare Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass der Aktuator (2) der Klemmvorrichtung (1) mit der Programm- , Speicher- und Steuereinheit (10) signalübertragend verbunden ist.Controllable device according to Claim 11, characterized in that the actuator (2) of the clamping device (1) is connected to the program, storage and control unit (10) in a signal-transmitting manner.
EP99119334A 1998-11-16 1999-09-29 Controlled weft thread feeding and clamping device for weaving machines Expired - Lifetime EP1016745B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19852794 1998-11-16
DE19852794A DE19852794B4 (en) 1998-11-16 1998-11-16 Controllable weft feeder and clamping device for weaving machines

Publications (3)

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EP1016745A2 true EP1016745A2 (en) 2000-07-05
EP1016745A3 EP1016745A3 (en) 2004-03-03
EP1016745B1 EP1016745B1 (en) 2005-11-23

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EP99119334A Expired - Lifetime EP1016745B1 (en) 1998-11-16 1999-09-29 Controlled weft thread feeding and clamping device for weaving machines

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US (1) US6119733A (en)
EP (1) EP1016745B1 (en)
JP (1) JP2000154444A (en)
AT (1) ATE310843T1 (en)
DE (2) DE19852794B4 (en)

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DE102004036996B3 (en) * 2004-07-30 2005-12-01 Lindauer Dornier Gmbh Düsenwebmaschine, in particular air jet loom, with a clamping device in the mixing tube
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EP3121317B1 (en) * 2015-07-23 2021-01-06 STÄUBLI BAYREUTH GmbH Method for weaving a fabric, near-net shape fabric woven via such a method and weaving loom for implementing this method
DE102015217356B3 (en) * 2015-09-10 2016-10-20 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Weaving machine with a device and method for holding, feeding and entering weft threads in a shed
CN105671756B (en) * 2016-03-30 2018-06-29 潍坊意宝机械有限公司 A kind of loom weft choosing device
EP3916140B1 (en) * 2020-05-26 2023-10-18 STÄUBLI BAYREUTH GmbH Rapier, method for drawing in a weft yarn with such a rapier and weaving loom comprising such a rapier

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Also Published As

Publication number Publication date
DE19852794B4 (en) 2004-03-25
JP2000154444A (en) 2000-06-06
DE59912825D1 (en) 2005-12-29
EP1016745A3 (en) 2004-03-03
ATE310843T1 (en) 2005-12-15
US6119733A (en) 2000-09-19
DE19852794A1 (en) 2000-05-18
EP1016745B1 (en) 2005-11-23

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