EP1016745B1 - 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
EP1016745B1
EP1016745B1 EP99119334A EP99119334A EP1016745B1 EP 1016745 B1 EP1016745 B1 EP 1016745B1 EP 99119334 A EP99119334 A EP 99119334A EP 99119334 A EP99119334 A EP 99119334A EP 1016745 B1 EP1016745 B1 EP 1016745B1
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EP
European Patent Office
Prior art keywords
actuator
weft thread
clamping device
clamp
thread feeding
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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.)
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EP99119334A
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German (de)
French (fr)
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EP1016745A3 (en
EP1016745A2 (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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    • 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 the a thread clamp is present several times, according to the features of the preamble of Claim 1.
  • the weft feeder and -klemmvoriques consists of a plurality of feeder levers, each lever having at its free end a weft thread clamp, and wherein each lever can be brought by suitable means in a fixed for the weft thread to a weft insertion member reference plane, and in the reference plane of a Resting position is pivotally movable in at least one working position, which may be, for example, the weft insertion position to the gripper of a rapier.
  • the respective weft thread to be presented to the weft insertion member is clamped in the respective weft thread clamp of the respective feeder lever between a first and a second clamping part.
  • the work functions clamping and releasing the weft thread are accomplished that the respective feeder lever with weft thread clamp recorded in a shed and posted on the fabric edge weft in a deviates from the rest and working position intermediate position when striking the weft thread inevitably between the clamping parts. In such a procedure, it is not ensured that the weft thread is reliably clamped, and it is not ensured that the jamming can be maintained regardless of the timing of weft thread feeding.
  • the clamping element of the thread clamp is a standing with the respective Schussfadenzubringerhebel actuator.
  • the Schussfadenzubringer- and -klemmvoriques has, as known from DE 297 16 310 U1, controllable in a reference plane Schussfadenzubringerhebel, at whose free end in each case an inventively designed and controllable actuator is arranged, of which the first clamping element is the respective feeder lever of the device and the second clamping element of the actuator itself or a standing with an actuator, for example, a motion transmitting member in operative connection clamping element.
  • the actuator itself forms the second clamping element, then this is for example a piezoelectric element which communicates with a program, storage and control unit of the weaving machine signal transmitting.
  • a piezoelectric actuator may be arranged stationarily on the respective weft feeder, the adjusting movements of which act on the movably formed second clamping element by means of a motion transmission member; the piezoelectric actuator is therefore not the second clamping element itself here.
  • the cooperating with the first clamping element of the thread clamp actuator can In this case, a piezoelectric component, an electromagnetic component, a permanent magnetic Component, a pneumo or hydroelectrically controllable component or a Be electric motor.
  • FIGS 1 to 1c show a Schussfadenzubringerhebel 4a with its individual parts of a Schusszufadenzubringer- and -klemmvorraum 4 shown schematically in Figure 2.
  • the structure and function of such a device 4 is known from DE-GM 297 16 310, the description of which is the subject of this Patent application is declared.
  • a thread clamp 1 is connected by means known per se firmly to the end.
  • the thread clamp 1 consists of a rigid clamping element 1a, the connecting side to the feeder lever 4a a free end encompassing and C-shaped profile section 1a 'has, at the same time holds the wire-side end portion formed as a piezoelectric element 2 second clamping element 1b or with the free End and the profile section 1a 'connects. In addition, this end portion may be potted or glued by a suitable means.
  • the other free end portion of the piezoelectric element 2 carries a yarn inlet bevel 5a having a wear-resistant weft thread clamping body. 5 A yarn inlet bevel 1a "also has the free end of the rigid clamping element 1a, which additionally has a stop 6 delimiting the piezoelectric element 2 in its opening movement.
  • the piezoelectrically acting thread clamp 1 is signal-controlled via the lines 13, 14 by a program, storage and control unit 10 of the loom shown in FIG. 2.
  • the actuator 2 which is here also a piezoelectrically acting actuator or an actuator acting according to claims 2 to 6, is mounted close to the control shaft 4b of the weft feeder and clamping device 4 on the respective feeder lever 4a.
  • a motion transmission member 3 is arranged, which transmits the actuating movements of the actuator 2, see also double arrow 3a, on the clamping element 1b in the sense of an opening or closing movement of the thread clamp 1.
  • the control of the actuator 2 is carried out by the program, memory and control unit 10 via the signal line 10 a, a contact strip 15 and a flexible cable sixteenth
  • the illustrated in Figure 3 embodiment corresponds in construction and operation of the in the example shown with the difference that the signal transmission from the Control unit 10 is not wired to the actuator 2, but contactless, e.g. inductive he follows.
  • FIG. 4 shows the pivot or rotation angle range 12 of a weft feeder lever 4 a with thread clamp 1 of the device 4 lying in a reference plane.
  • the structure and operation of the thread clamp 1 with the clamping element 1a, 1b can be taken from the description of Figures 3 and 4, so here only on the representation of the position to be taken by the thread clamp 1 position 7 on the one hand relative to the cutting plane 17a of a weft scissors 17 and on the other to be discussed on the representation of the thread clamping positions 8 and 9. It is important that the positions 7, 8 and 9 are within the lying in a reference plane of rotation angle range 12, 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 11 is presented to a gripper, not shown, a rapier for transfer and passed through the controlled opening of the thread clamp
  • the position 9 is that in a prepared weft thread 11 is still recorded with the registered in a shed and the edge 18 a of a fabric 18 weft yarn 11 by controlled opening and closing the thread clamp 1 and kept clamped, until such time as the ailing weft thread 11 from the prepared weft thread through the weft scissors 17 is cut off.
  • the respective feeder lever 4a is moved back with the thread clamp 1 in the rest 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.
  • 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 an electromagnetic unit, for example, which is controlled by the control unit 10 in the aforementioned embodiments, and the opening and closing movement of the thread clamp 1 is carried out by means of the motion transmission member 3 constituting 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 the 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 -klemmvorrichtung consists of a plurality of feeder levers, each lever having at its free end a weft thread clamp, and wherein each lever can be brought by suitable means in a fixed for the weft thread to a weft insertion member reference plane, and in the reference plane of a Resting position is pivotally movable in at least one working position, which may be, for example, the weft insertion position to the gripper of a rapier. The respective weft thread to be presented to the weft insertion member is clamped in the respective weft thread clamp of the respective feeder lever between a first and a second clamping part.
The work functions clamping and releasing the weft thread are accomplished that the respective feeder lever with weft thread clamp recorded in a shed and posted on the fabric edge weft in a deviates from the rest and working position intermediate position when striking the weft thread inevitably between the clamping parts.
In such a procedure, it is not ensured that the weft thread is reliably clamped, and it is not ensured that the jamming can be maintained regardless of the timing of weft thread feeding.

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 a Schussfadenzubringer- and -klemmvorrichtung according to DE-Utility Model 297 16 310 U1 with eg 6 Schussfadenzubringerhebel the weft thread clamped in the respective thread clamp is not present to the gripper with each weft insertion; that is, the feed lever with the clamped weft thread is repeatedly moved up and down in different vertical positions relative to the reference plane in the aforementioned device. These movements can cause the weft thread to be pulled out of the clamp, thus interrupting the weaving process.
Another disadvantage of the known thread clamps is that the weft thread must be pulled when taking over by the gripper from the thread clamp. This process can lead to damage to the structure of the weft thread in such a way that the thread end is dissolved and individual filaments remain in the thread clamp or that there is a weft breakage.

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 thread clamp for a according to DE-GM 297 16 310 disclosed Schussfadenzubringer- and -klemmvorrichtung to create a defined clamping and releasing the weft yarn 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 a standing with the respective Schussfadenzubringerhebel actuator. The Schussfadenzubringer- and -klemmvorrichtung has, as known from DE 297 16 310 U1, controllable in a reference plane Schussfadenzubringerhebel, at whose free end in each case an inventively designed and controllable actuator is arranged, of which the first clamping element is the respective feeder lever of the device and the second clamping element of the actuator itself or a standing with an actuator, for example, a motion transmitting member in operative connection clamping element.
If the actuator itself forms the second clamping element, then this is for example a piezoelectric element which communicates with a program, storage and control unit of the weaving machine signal transmitting.
In another case, according to the invention, a piezoelectric actuator may be arranged stationarily on the respective weft feeder, the adjusting movements of which act on the movably formed second clamping element by means of a motion transmission member; the piezoelectric actuator is therefore not the second clamping element itself here.

Der mit dem ersten Klemmelement der Fadenklemme zusammenwirkende Aktuator kann dabei ein piezoelektrisches Bauteil, ein elektromagnetisches Bauteil, ein permanentmagnetisches Bauteil, ein pneumo- oder hydroelektrisch steuerbares Bauteil oder ein Elektromotor sein.The cooperating with the first clamping element of the thread clamp actuator can In this case, a piezoelectric component, an electromagnetic component, a permanent magnetic Component, a pneumo or hydroelectrically controllable component or a Be 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 according to claim 1 and the Pivoting movements of the individual weft feeder levers in the reference plane and here again freely programmable within a rotation angle range, wherein the Total rotation angle range is less than 90 degrees.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher beschrieben.The invention will be described in more detail with reference to an 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:
FIG. 1
the weft feeder lever with an actuator acting directly as a weft thread clamp,
FIG. 1a
the weft feeder lever as a clamping element of the weft thread clamp according to FIG. 1,
FIG. 1b
the actuator of the weft thread clamp as a piezoelectric component according to FIG. 1,
Figure 1c
a wear-resistant clamping body which can be connected to the piezoelectric component,
FIG. 2
the schematic representation of the top view of a Schussfadenzubringer- and -klemmvorrichtung with the force acting on the weft thread clamp actuator with wired control signal transmission,
FIG. 3
the schematic representation of the top view of a Schussfadenzubringer- and -klemmvorrichtung with the force acting on the weft thread clamp actuator with contactless control signal transmission,
FIG. 4
the swivel angle range of the feeder lever schematically represented in the plan view of a weft feeder and clamping device according to FIGS. 2 and 3,
FIG. 5
the schematic representation of the side view of a thread clamp according to the 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 Schussfadenzubringerhebel 4a with its individual parts of a Schusszufadenzubringer- and -klemmvorrichtung 4 shown schematically in Figure 2. The structure and function of such a device 4 is known from 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 feeder lever 4a, a thread clamp 1 is connected by means known per se firmly to the end.
The thread clamp 1 consists of a rigid clamping element 1a, the connecting side to the feeder lever 4a a free end encompassing and C-shaped profile section 1a 'has, at the same time holds the wire-side end portion formed as a piezoelectric element 2 second clamping element 1b or with the free End and the profile section 1a 'connects. In addition, this end portion may be potted or glued by a suitable means.
The other free end portion of the piezoelectric element 2 carries a yarn inlet bevel 5a having a wear-resistant weft thread clamping body. 5
A yarn inlet bevel 1a "also has the free end of the rigid clamping element 1a, which additionally has a stop 6 delimiting the piezoelectric element 2 in its opening movement.
The piezoelectrically acting thread clamp 1 is signal-controlled via the lines 13, 14 by a program, storage and control unit 10 of the loom shown in FIG. 2.

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 FIG. 2, the actuator 2, which is here also a piezoelectrically acting actuator or an actuator acting according to claims 2 to 6, is mounted close to the control shaft 4b of the weft feeder and clamping device 4 on the respective feeder lever 4a. Between the actuator 2 and the movable clamping element 1b of the thread clamp 1, a motion transmission member 3 is arranged, which transmits the actuating movements of the actuator 2, see also double arrow 3a, on the clamping element 1b in the sense of an opening or closing movement of the thread clamp 1.
The control of the actuator 2 is carried out by the program, memory and control unit 10 via the signal line 10 a, a contact strip 15 and a flexible cable sixteenth
The pivoting movement of the Schussfadenzubringerhebels 4a from the rest position 7 in the working position 8 shown in dashed lines by means of the control 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 illustrated in Figure 3 embodiment corresponds in construction and operation of the in the example shown with the difference that the signal transmission from the Control unit 10 is not wired to the actuator 2, 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 pivot or rotation angle range 12 of a weft feeder lever 4 a with thread clamp 1 of the device 4 lying in a reference plane.
The structure and operation of the thread clamp 1 with the clamping element 1a, 1b can be taken from the description of Figures 3 and 4, so here only on the representation of the position to be taken by the thread clamp 1 position 7 on the one hand relative to the cutting plane 17a of a weft scissors 17 and on the other to be discussed on the representation of the thread clamping positions 8 and 9. It is important that the positions 7, 8 and 9 are within the lying in a reference plane of rotation angle range 12, 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 11 is presented to a gripper, not shown, a rapier for transfer and passed through the controlled opening of the thread clamp, and the position 9 is that in a prepared weft thread 11 is still recorded with the registered in a shed and the edge 18 a of a fabric 18 weft yarn 11 by controlled opening and closing the thread clamp 1 and kept clamped, until such time as the ailing weft thread 11 from the prepared weft thread through the weft scissors 17 is cut off. Subsequently, the respective feeder lever 4a is moved back with the thread clamp 1 in the rest position 7.
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 an electromagnetic unit, for example, which is controlled by the control unit 10 in the aforementioned embodiments, and the opening and closing movement of the thread clamp 1 is carried out by means of the motion transmission member 3 constituting a lever mechanism.

ZEICHNUNGS-LEGENDEDRAWING LEGEND

0101
Fadenklemmethread clamp
01a01a
Klemmelementclamping element
01a'01a '
Profilabschnittprofile section
01a''01a ''
FadeneinlaufschrägeThread run-in slope
0202
Aktuatoractuator
0303
BewegungsübertragungsgliedMovement transmission member
03a03a
Doppelpfeildouble arrow
0404
Schussfadenzubringer- und -klemmvorrichtungWeft feeder and clamping device
04a04a
SchussfadenzubringerhebelWeft feeder lever
04b04b
Stellwelleactuating shaft
0505
Klemmkörperclamping bodies
05a05a
FadeneinlaufschrägeThread run-in slope
0606
Anschlagattack
0707
Ruhepositionrest position
0808
Arbeitspositionworking position
0909
Arbeitspositionworking position
1010
Programm-, Speicher- und SteuereinheitProgram, memory and control unit
10a10a
Signalleitungsignal line
1111
Schussfadenweft
1212
DrehwinkelbereichRotation angle range
1313
Kabelelectric wire
1414
Kabelelectric wire
1515
Kontaktleistecontact strip
1616
Kabelelectric wire
1717
SchussfadenschereWeft cutter
17a17a
Schneidebenecutting plane
1818
Gewebetissue
18a18a
Gewebekanteselvedge

Claims (13)

  1. Controllable weft thread feeding and clamping device, especially for feeding a weft thread (11) to the gripper of a gripper loom, having a plurality of weft thread feeding levers (4a), wherein each weft thread feeding lever is movable in a reference plane, wherein the free end of each weft thread feeding lever possesses a thread clamp (1) having a first and a second clamp element (1a, 1b), of which at least one clamp element performs work functions for the purpose of clamping and releasing the weft thread (11) to be inserted into a shed, wherein furthermore the respective weft thread feeding lever (4a) with the thread clamp (1) is pivotable in the reference plane, in accordance with a control program stored in a program, memory and control unit (10), out of a rest position (7) into at least a first work position (8) and into a second work position (9), characterised in that the at least one clamp element of the thread clamp (1) is an actuator (2) arranged on the weft thread feeding lever and in communication with the respective weft thread feeding lever (4a), or is a clamp element in operative connection with an actuator arranged on the weft thread feeding lever.
  2. A clamping device according to claim 1, characterised in that the actuator (2) is a piezoelectric actuator.
  3. A clamping device according to claim 1, characterised in that the actuator (2) is an electromagnetically controlled actuator.
  4. A clamping device according to claim 1, characterised in that the actuator (2) is a pneumo-electrically controlled actuator.
  5. A clamping device according to claim 1, characterised in that the actuator (2) is a hydroelectrically controlled actuator.
  6. A clamping device according to claim 1, characterised in that the actuator (2) is an electric motor controlled actuator.
  7. A clamping device according to any one of claims 1 to 6, characterised in that the power and signal transmission to the actuator (2) is effected in a wired manner.
  8. A clamping device according to any one of claims 1 to 6, characterised in that the power and signal transmission to the actuator (2) is effected contactlessly.
  9. A clamping device according to claims 1 and 6, characterised in that the actuator (2) is operatively connected with the clamp element (1 b) by way of at least one motion-transmission element (3).
  10. A clamping device according to claims 1 and 6, characterised in that the clamp elements (1a, 1b) and the actuator (2) are part of a pivotally driven feeding lever (4a) of a controllable weft thread feeding and clamping device (4).
  11. A clamping device according to claim 1, characterised in that the opening travel of the second clamp element (1 b) is limited by at least one stop (6).
  12. A controllable device according to claim 1, characterised in that pivoting of the weft thread feeding lever (4a) in the reference plane is user-programmable.
  13. A controllable device according to claim 11, characterised in that the actuator (2) of the clamping device (1) is in signal transmission connection with the program, memory and control unit (10).
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)

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

Family

ID=7887957

Family Applications (1)

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

Country Status (5)

Country Link
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
DE102006025968B3 (en) * 2006-06-02 2007-11-29 Lindauer Dornier Gmbh Reliable clamping of weft thread in jet loom, especially air jet loom, by use of movable clamping member with clamping force magnetically reinforced in thread clamping position
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
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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
EP1016745A3 (en) 2004-03-03
EP1016745A2 (en) 2000-07-05
DE59912825D1 (en) 2005-12-29
ATE310843T1 (en) 2005-12-15
US6119733A (en) 2000-09-19
JP2000154444A (en) 2000-06-06
DE19852794A1 (en) 2000-05-18
DE19852794B4 (en) 2004-03-25

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