EP0146663B1 - Weft inserting device for a needle loom - Google Patents

Weft inserting device for a needle loom Download PDF

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Publication number
EP0146663B1
EP0146663B1 EP83810590A EP83810590A EP0146663B1 EP 0146663 B1 EP0146663 B1 EP 0146663B1 EP 83810590 A EP83810590 A EP 83810590A EP 83810590 A EP83810590 A EP 83810590A EP 0146663 B1 EP0146663 B1 EP 0146663B1
Authority
EP
European Patent Office
Prior art keywords
tongue
clamping
giver
additional
slot
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.)
Expired
Application number
EP83810590A
Other languages
German (de)
French (fr)
Other versions
EP0146663A1 (en
Inventor
Anton Egloff
Lothar Köhler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sulzer AG
Original Assignee
Maschinenfabrik Sulzer Rueti AG
Gebrueder Sulzer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Sulzer Rueti AG, Gebrueder Sulzer AG filed Critical Maschinenfabrik Sulzer Rueti AG
Priority to EP83810590A priority Critical patent/EP0146663B1/en
Priority to DE8383810590T priority patent/DE3375806D1/en
Priority to US06/673,085 priority patent/US4587998A/en
Priority to JP59263130A priority patent/JPS60146041A/en
Publication of EP0146663A1 publication Critical patent/EP0146663A1/en
Application granted granted Critical
Publication of EP0146663B1 publication Critical patent/EP0146663B1/en
Expired legal-status Critical Current

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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
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/233—Carrying grippers

Definitions

  • the invention relates to a rapier for a rapier weaving machine, for. B. ribbon or bar rapier weaving machine, with a laying against a stationary, in the bringer gripper jaws, with this a clamping slot forming clamping tongue for holding the weft to be entered in the shed.
  • the clamping tongue has a tapered, free end of the same rigidity as the rest of the tongue part.
  • the entire clamping tongue is made of flat steel.
  • the clamping tongue cannot spring transversely to its longitudinal direction compared to the clamping jaw. If two or more threads are to be inserted into the weaving shed of the loom at the same time with this arrangement, only one of the threads can be securely held in the clamping slot between the tongue and the clamping jaws, the other threads can easily be lost from the clamping slot during the weft insertion (thread loser ).
  • the clamping effect is only optimal with one thread, with the others it is more or less weak and not sufficient for a secure hold.
  • the invention has for its object to provide a bringer gripper which is particularly improved in this regard.
  • the invention consists in the fact that the clamping tongue has at its free end an extension part that also lies against the clamping jaws and resiliently against this.
  • the gripper gripper also for multiple weft insertion, in particular for the so-called double weft insertion, in which two weft threads are held in the clamping slot between the clamping tongue and clamping jaws simultaneously and with suitable and sufficient clamping force.
  • double weft insertion two weft threads are held in the clamping slot between the clamping tongue and clamping jaws simultaneously and with suitable and sufficient clamping force.
  • there is a particularly secure hold in the clamping slot if the weft thread inserted first into the clamping slot is somewhat thinner than the subsequent weft thread. Due to the resilient tongue extension part, for example, two weft threads of the same strength can also be securely held in one and the same clamping slot and inserted into the shed.
  • the thread first inserted into the clamping slot can be held essentially by positive locking, the thread introduced afterwards can be held essentially by friction locking.
  • the extension part consists of at least one additional tongue carried by the clamping tongue, which projects beyond the free end of the carrier tongue and the additional tongue is adjustable and fixable transversely to its longitudinal direction on the carrier tongue.
  • the clamping slot existing between the additional tongue and the clamping jaws can be adapted to the thickness of the weft threads to be inserted, as a result of which an optimal clamping effect for the weft threads, in particular for the subsequent weft thread located in the clamping slot, can be achieved.
  • the bringer gripper designated as a whole by 21, contains two side walls 22, 23 which are continued in two upper lugs 24, 25.
  • the lugs 24, 25 overlap one another and are connected to one another by a connecting part 26.
  • the two side walls 22, 23 are connected to one another by a web 27, the left part of which in FIG. 2 is designed as clamping jaws 2 for two weft threads 4,9 introduced into slot 30 when weft insertion in accordance with arrow C.
  • the web 27 contains a trapezoidal recess 33 with an inclined wall 34 and a vertical wall 35.
  • a clamping tongue 5 is guided in the recess 33 by means of a screw connection 36 in a rear web 37 of the carrier gripper 21.
  • the tongue 5 carries an additional clamping tongue 7 fastened by means of a screw 6, the tip 41 of which in FIG. 1 projects beyond the end 42 of the carrier clamping tongue 5 on the left and thereby forms an extension part of the tongue 5.
  • the additional tongue 7 is designed to be substantially thinner than the carrier tongue 5.
  • the carrier tongue 5 is two mm thick, the additional tongue 7 is 0.4 mm thick.
  • Carrier tongue 5 and additional tongue 7 are pressed upwards into the trapezoidal recess 33 of the web 27 by a corresponding pretensioning of the tongue 5 in FIG. 2 (arrow A).
  • the additional tongue 7 contains a slot 8. Because of this slot and because of its small relative to the thickness of the carrier tongue 5 Strength can the additional tongue 7 in Fig. 2 horizontally and in Fig. 1 spring vertically (arrow B), while the support tongue 5 is not movable in this direction due to its strong design.
  • the additional tongue 7 can also be adjusted by adjusting the screw 6 relative to the carrier tongue 5 and in a desired position in which the inlet slot formed by it and the clamping jaws 2 at 35 for the weft threads 4,9 of the type and in particular the thickness these two threads can be adjusted.
  • the carrier tongue 5 carries, in addition to the upper additional tongue 7 in FIG. 5, a lower additional clamping tongue 10 which is designed corresponding to the tongue 7. The security of the clamping in the slot 30 can thus be increased.
  • the clamping jaw 2 contains an additional shoulder 48, in which the lower additional clamping tongue 10 lies.
  • the threads 4.9 are thereby held at 30.35 and 48 with a right-angled kink, which also results in increased security during the double weft entry.
  • the additional tongue 7 is mounted on the carrier clamping tongue 5 at a pivot point 36 '. It is of the same thickness as the tongue 5, so it does not spring in accordance with arrow B.
  • the suspension in the direction of arrow B is achieved in this type by two compression springs 51, which endeavor to pivot the additional tongue 7 in FIG. 7 by 36 'clockwise. This results in the two threads being held firmly in positions 4a, 9a, the positive connection acting at 9a being superppnated by the positive engagement on the part of the carrier tongue 5.
  • the additional clamping tongues 7, 10 form a front extension of the carrier tongue 5.
  • the additional tongues 7, 10 spring due to their low thickness or due to the slot 8 and due to the Adjustment possibility for screw 6 according to arrow B and therefore lie against the corresponding clamping surface of the clamping jaw 2 in a desired and optimal manner for the threads 4.9 at 30.35.48.
  • a design according to the invention also arises when z. B. according to FIG. 3, there is only a single clamping tongue 3, the front part comprising the tip 45, however, is substantially thinner than the rest of the part or - with the same thickness - for example made of a flexible plastic, for. B. polyamide (NYLON).
  • a front extension of the clamping tongue which is resilient in direction B and which enables double-shot entry in the manner mentioned.
  • three or more threads can optionally also be introduced into the inlet slot 30.
  • the tongues 5.7, 10 can, for. B. consist of steel. After the weft entry, the gripper 21 is moved out of the shed.
  • an attachment 60 attached to tongue 5 passes under a fixed cam 70, as a result of which tongues 5, 7 are moved downward according to arrow D against their spring action in FIG. 2.
  • Slit 30 can now be cleaned of fiber fly by a blowing or suction device.

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

Description

Die Erfindung betrifft einen Bringergreifer für eine Greiferwebmaschine, z. B. Band- oder Stangengreifer-Webmaschine, mit einer sich gegen einen ortsfest, im Bringergreifer angebrachten Klemmbacken legenden, mit diesem einen Klemmschlitz bildenden Klemmzunge zum Festhalten des in das Webfach einzutragenden Schussfadens.The invention relates to a rapier for a rapier weaving machine, for. B. ribbon or bar rapier weaving machine, with a laying against a stationary, in the bringer gripper jaws, with this a clamping slot forming clamping tongue for holding the weft to be entered in the shed.

Bei einem bisherigen Bringergreifer dieser Art (CH-PS 592 761 = US-PS 4 071 055 / MR 121) besitzt die Klemmzunge ein spitz zusammenlaufendes, freies Ende von gleicher Starrheit wie der übrige Zungenteil. Die ganze Klemmzunge besteht aus Flachstahl. Die Klemmzunge vermag gegenüber dem Klemmbacken nicht quer zu ihrer Längsrichtung zu federn. Sollen mit dieser Anordnung zwei oder mehrere Fäden zugleich in das Webfach der Webmaschine eingetragen werden, so kann nur einer der Fäden mit Sicherheit in dem Klemmschlitz zwischen Zunge und Klemmbacken festgehalten werden, die übrigen Fäden können während des Schusseintrages leicht aus dem Klemmschlitz verloren gehen (Fadenverlierer). Die Klemmwirkung ist nur bei einem Faden optimal, bei den anderen ist sie mehr oder weniger schwach und für den sicheren Halt nicht ausreichend.In a previous gripper of this type (CH-PS 592 761 = US-PS 4 071 055 / MR 121) the clamping tongue has a tapered, free end of the same rigidity as the rest of the tongue part. The entire clamping tongue is made of flat steel. The clamping tongue cannot spring transversely to its longitudinal direction compared to the clamping jaw. If two or more threads are to be inserted into the weaving shed of the loom at the same time with this arrangement, only one of the threads can be securely held in the clamping slot between the tongue and the clamping jaws, the other threads can easily be lost from the clamping slot during the weft insertion (thread loser ). The clamping effect is only optimal with one thread, with the others it is more or less weak and not sufficient for a secure hold.

Der Erfindung liegt die Aufgabe zugrunde, einen besonders in dieser Hinsicht verbesserten Bringergreifer zu schaffen.The invention has for its object to provide a bringer gripper which is particularly improved in this regard.

Die Erfindung besteht darin, dass die Klemmzunge an ihrem freien Ende ein sich ebenfalls gegen den Klemmbacken legendes und gegen diesen federndes Verlängerungsteil aufweist.The invention consists in the fact that the clamping tongue has at its free end an extension part that also lies against the clamping jaws and resiliently against this.

Auf diese Weise wird es möglich, den Bringergreifer auch für Mehrschusseintrag, insbesondere für den sogenannten Doppelschusseintrag zu verwenden, bei dem zwei Schussfäden zugleich und mit passender und ausreichender Klemmkraft in dem Klemmschlitz zwischen Klemmzunge und Klemmbacken festgehalten werden. Wie die Versuche ergeben, besteht besonders sicherer Halt in dem Klemmschlitz, wenn der zuerst in den Klemmschlitz eingeführte Schussfaden etwas dünner ist als der darauffolgende Schussfaden. Durch den federnden Zungenverlängerungsteil können aber beispielsweise auch zwei Schussfäden gleicher Stärke sicher in ein und demselben Klemmschlitz gehalten und in das Webfach eingetragen werden. Der zuerst in den Klemmschlitz eingeführte Faden kann im wesentlichen durch Formschluss, der danach eingeleitete Faden kann im wesentlichen durch Kraftschluss gehalten werden.In this way, it becomes possible to use the gripper gripper also for multiple weft insertion, in particular for the so-called double weft insertion, in which two weft threads are held in the clamping slot between the clamping tongue and clamping jaws simultaneously and with suitable and sufficient clamping force. As the experiments show, there is a particularly secure hold in the clamping slot if the weft thread inserted first into the clamping slot is somewhat thinner than the subsequent weft thread. Due to the resilient tongue extension part, for example, two weft threads of the same strength can also be securely held in one and the same clamping slot and inserted into the shed. The thread first inserted into the clamping slot can be held essentially by positive locking, the thread introduced afterwards can be held essentially by friction locking.

Bei einer Ausführungsform besteht das Verlängerungsteil aus mindestens einer von der Klemmzunge getragenen Zusatzzunge, welche über das freie Ende der Trägerzunge hinausragt und die Zusatzzunge ist quer zu ihrer Längsrichtung verstellbar und feststellbar auf der Trägerzunge angebracht. Hierdurch lässt sich der zwischen der Zusatzzunge und dem Klemmbacken bestehende Klemmschlitz der Dicke der einzutragenden Schussfäden anpassen, wodurch optimale Klemmwirkung für die Schussfäden, insbesondere für den nachfolgenden, im Klemmschlitz befindlichen Schussfaden erzielt werden kann.In one embodiment, the extension part consists of at least one additional tongue carried by the clamping tongue, which projects beyond the free end of the carrier tongue and the additional tongue is adjustable and fixable transversely to its longitudinal direction on the carrier tongue. As a result, the clamping slot existing between the additional tongue and the clamping jaws can be adapted to the thickness of the weft threads to be inserted, as a result of which an optimal clamping effect for the weft threads, in particular for the subsequent weft thread located in the clamping slot, can be achieved.

Weitere Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen in Verbindung mit der Zeichnung und den Ansprüchen.

  • Fig. 1 ist eine Unteransicht eines erfindungsgemäss ausgebildeten Bringergreifers für eine Bandgreiferwebmaschine,
  • Fig. 2 ist ein Schnitt nach Linie 11-11 in Fig. 1, um 90° gedreht,
  • Fig. 3 ist - zum Vergleich - eine der Fig. 1 entsprechende Unteransicht einer bekannten Ausführungsform,
  • Fig. 4 ist eine Unteransicht einer gegenüber Fig. 1 abgewandelten, erfindungsgemässen Bauart,
  • Fig. 5 ist ein der Fig. 2 entsprechender Schnitt nach Linie V-V in Fig. 4,
  • Fig. 6 ein der Fig. 5 entsprechender Schnitt einer noch anderen Bauart und
  • Fig. 7 und 8 veranschaulichen Details von weiteren Ausführungsbeispielen in grösserem Massstab.
Further features of the invention result from the following description of exemplary embodiments in conjunction with the drawing and the claims.
  • 1 is a bottom view of a rapier gripper designed according to the invention for a band rapier weaving machine,
  • 2 is a section along line 11-11 in Fig. 1, rotated by 90 °,
  • 3 is - for comparison - a bottom view corresponding to FIG. 1 of a known embodiment,
  • FIG. 4 is a bottom view of a construction according to the invention modified in comparison with FIG. 1, FIG.
  • 5 is a section corresponding to FIG. 2 along line VV in FIG. 4,
  • Fig. 6 is a section corresponding to FIG. 5 of yet another type and
  • 7 and 8 illustrate details of further exemplary embodiments on a larger scale.

Der als Ganzes mit 21 bezeichnete Bringergreifer enthält zwei Seitenwandungen 22,23, die sich in zwei obere Ansätze 24,25 fortsetzen. Die Ansätze 24,25 überlappen einander und sind durch eine Verbindungspartie 26 miteinander verbunden. In Fig. 2 unten sind die beiden Seitenwandungen 22,23 durch einen Steg 27 miteinander verbunden, dessen in Fig. 2 linker Teil als Klemmbacken 2 für zwei in Schlitz 30 beim Schußeintrag gemäß Pfeil C eingeleitete Schussfäden 4,9 ausgebildet ist.The bringer gripper, designated as a whole by 21, contains two side walls 22, 23 which are continued in two upper lugs 24, 25. The lugs 24, 25 overlap one another and are connected to one another by a connecting part 26. In FIG. 2 below, the two side walls 22, 23 are connected to one another by a web 27, the left part of which in FIG. 2 is designed as clamping jaws 2 for two weft threads 4,9 introduced into slot 30 when weft insertion in accordance with arrow C.

Der Steg 27 enthält eine trapezförmige Ausnehmung 33 mit einer schrägstehenden Wandung 34 und einer senkrecht stehenden Wandung 35. In der Ausnehmung 33 ist eine mittels einer Verschraubung 36 in einem hinteren Steg 37 des Bringergreifers 21 befestigte Klemmzunge 5 geführt. Die Zunge 5 trägt eine mittels einer Schraube 6 befestigte, zusätzliche Klemmzunge 7, deren Spitze 41 in Fig. 1 links über das Ende 42 der Trägerklemmzunge 5 hinausragt und dadurch einen Verlängerungsteil von Zunge 5 bildet.The web 27 contains a trapezoidal recess 33 with an inclined wall 34 and a vertical wall 35. A clamping tongue 5 is guided in the recess 33 by means of a screw connection 36 in a rear web 37 of the carrier gripper 21. The tongue 5 carries an additional clamping tongue 7 fastened by means of a screw 6, the tip 41 of which in FIG. 1 projects beyond the end 42 of the carrier clamping tongue 5 on the left and thereby forms an extension part of the tongue 5.

Wie aus Fig. 2 ersichtlich ist, ist die Zusatzzunge 7 wesentlich dünner ausgebildet als die Trägerzunge 5. Bei dem nicht massstabsgetreu wiedergegebenen Beispiel nach Fig. 2 ist die Trägerzunge 5 zwei mm dick, die Zusatzzunge 7 ist 0,4 mm dick. Trägerzunge 5 und Zusatzzunge 7 werden durch eine entsprechende Vorspannung der Zunge 5 in Fig. 2 nach oben in die trapezförmige Ausnehmung 33 des Steges 27 hineingedrückt (Pfeil A).As can be seen from FIG. 2, the additional tongue 7 is designed to be substantially thinner than the carrier tongue 5. In the example according to FIG. 2, which is not drawn to scale, the carrier tongue 5 is two mm thick, the additional tongue 7 is 0.4 mm thick. Carrier tongue 5 and additional tongue 7 are pressed upwards into the trapezoidal recess 33 of the web 27 by a corresponding pretensioning of the tongue 5 in FIG. 2 (arrow A).

Die Zusatzzunge 7 enthält einen Schlitz 8. Aufgrund dieses Schlitzes und aufgrund ihrer relativ zur Stärke der Trägerzunge 5 geringen Stärke kann die Zusatzzunge 7 in Fig. 2 horizontal und in Fig. 1 vertikal federn (Pfeil B), während die Trägerzunge 5 infolge ihrer kräftigen Ausbildung in dieser Richtung nicht beweglich ist. Die Zusatzzunge 7 lässt sich überdies durch entsprechende Einstellung der Schraube 6 relativ zu der Trägerzunge 5 verstellen und in einer gewünschten Position feststellen, in welcher der von ihr und dem Klemmbacken 2 bei 35 gebildete Einlaufschlitz für die Schussfäden 4,9 der Art und insbesondere der Dicke dieser beiden Fäden angepasst werden kann.The additional tongue 7 contains a slot 8. Because of this slot and because of its small relative to the thickness of the carrier tongue 5 Strength can the additional tongue 7 in Fig. 2 horizontally and in Fig. 1 spring vertically (arrow B), while the support tongue 5 is not movable in this direction due to its strong design. The additional tongue 7 can also be adjusted by adjusting the screw 6 relative to the carrier tongue 5 and in a desired position in which the inlet slot formed by it and the clamping jaws 2 at 35 for the weft threads 4,9 of the type and in particular the thickness these two threads can be adjusted.

Gemäss Fig. 1 ist angenommen, dass beim Einführen der Fäden in den Schlitz 30 zuerst ein dünnerer Faden 4 und danach ein dickerer Faden 9 eingeführt wird. Der dünnere Faden 4 wird in der Position 4a zwischen der Trägerzunge 5 und der Wandung 35 des Klemmbackens 2 im wesentlichen durch Formschluss festgehalten, der dickere Faden 9 wird in der Position 9a zwischen der Zusatzzunge 7 und der Wandung 35 von Klemmbacken 2 im wesentlichen durch Kraftschluss gehalten. Aufgrund der Erfahrung während des Webbetriebes lässt sich auf diese Weise die Zusatzzunge 7 mittels der Schraube 6 in eine optimale Position bringen, wodurch es möglich ist, die beiden Fäden 4,9 zugleich in das Webfach der zugehörigen Webmaschine einzutragen und sie dabei sicher festzuklemmen, so dass keiner von ihnen, insbesondere nicht der weiter aussen bei 9a gehaltene Faden 9 verloren gehen kann.1, it is assumed that when the threads are inserted into the slot 30, first a thinner thread 4 and then a thicker thread 9 is inserted. The thinner thread 4 is held in position 4a between the carrier tongue 5 and the wall 35 of the clamping jaw 2 essentially by positive locking, the thicker thread 9 is in position 9a between the additional tongue 7 and the wall 35 of clamping jaws 2 essentially by frictional engagement held. Based on experience during weaving operation, the additional tongue 7 can be brought into an optimal position by means of the screw 6, which makes it possible to simultaneously insert the two threads 4,9 into the shed of the associated weaving machine and to securely clamp them in the process that none of them, in particular the thread 9 held further outside at 9a, can be lost.

Bei der bekannten Ausführung nach Fig. 3 ist nur eine einzige, hinsichtlich ihrer Dicke und Vorspannung der Trägerzunge 5 nach Fig. 2- entsprechende Klemmzunge 3 vorgesehen, deren vorderes Ende 45 spitz zuläuft und zusammen mit dem Klemmbacken 2 einen entsprechenden Einlaufschlitz 30 für den einzigen Schussfaden 4 bildet. Ein zweiter Schussfaden entsprechend dem Faden 9 nach Fig. 1 kann bei dieser Ausführung nicht mit Sicherheit festgeklemmt werden, der sogenannte Doppelschuss-Eintrag ist nicht gewährleistet.In the known embodiment according to FIG. 3, only a single clamping tongue 3 is provided, corresponding in terms of its thickness and pretensioning of the carrier tongue 5 according to FIG Weft 4 forms. A second weft thread corresponding to thread 9 according to FIG. 1 cannot be securely clamped in this embodiment, the so-called double weft entry is not guaranteed.

Bei der erfindungsgemässen Bauart nach Fig. 4,5 trägt die Trägerzunge 5 ausser der in Fig. 5 oberen Zusatzzunge 7 eine untere Zusatz-Klemmzunge 10, die entsprechend der Zunge 7 ausgebildet ist. Die Sicherheit der Klemmung im Schlitz 30 lässt sich damit erhöhen.In the construction according to the invention according to FIG. 4.5, the carrier tongue 5 carries, in addition to the upper additional tongue 7 in FIG. 5, a lower additional clamping tongue 10 which is designed corresponding to the tongue 7. The security of the clamping in the slot 30 can thus be increased.

Bei dem gegenüber Fig. 5 abgewandelten Ausführungsbeispiel nach Fig. 6 enthält der Klemmbacken 2 eine zusätzliche Schulter 48, in welche sich die untere Zusatzklemmzunge 10 legt. Die Fäden 4,9 werden dadurch bei 30,35 und bei 48 unter rechtwinkliger Abknickung festgehalten, wodurch ebenfalls eine erhöhte Sicherheit während des Doppelschusseintrages entsteht.In the exemplary embodiment according to FIG. 6, modified from FIG. 5, the clamping jaw 2 contains an additional shoulder 48, in which the lower additional clamping tongue 10 lies. The threads 4.9 are thereby held at 30.35 and 48 with a right-angled kink, which also results in increased security during the double weft entry.

Bei dem Beispiel nach Fig. ist die Zusatzzunge 7 in einem Drehpunkt 36' auf der Trägerklemmzunge 5 gelagert. Sie ist von gleicher Stärke wie die Zunge 5, federt also in sich gemäss Pfeil B nicht. Die Federung in Richtung von Pfeil B wird bei dieser Bauart durch zwei Druckfedern 51 erzielt, die bestrebt sind, die Zusatzzunge 7 in Fig. 7 um 36' im Uhrzeigersinn zu verschwenken. Dadurch entsteht kraftschlüssiges Festhalten der beiden Fäden in den Positionen 4a,9a, wobei der bei 9a wirkende Kraftschluss vom Formschluss seitens der Trägerzunge 5 superppniert ist.In the example according to FIG. 1, the additional tongue 7 is mounted on the carrier clamping tongue 5 at a pivot point 36 '. It is of the same thickness as the tongue 5, so it does not spring in accordance with arrow B. The suspension in the direction of arrow B is achieved in this type by two compression springs 51, which endeavor to pivot the additional tongue 7 in FIG. 7 by 36 'clockwise. This results in the two threads being held firmly in positions 4a, 9a, the positive connection acting at 9a being superppnated by the positive engagement on the part of the carrier tongue 5.

Bei der hinsichtlich der Zungenstärke von Zunge 7 der Fig. 7 entsprechenden Bauart nach Fig. 8 ist die Querfederung in Richtung von Pfeil B durch eine bei 52 in der Wandung 23 befestigte Flachfeder 53 erzielt.In the construction according to FIG. 8 corresponding to the tongue thickness of tongue 7 of FIG. 7, the transverse suspension in the direction of arrow B is achieved by a flat spring 53 fastened at 52 in the wall 23.

Bei allen erfindungsgemässen Ausführungen bilden die Zusatzklemmzungen 7,10 eine vordere Verlängerung der Trägerzunge 5. Bei den Beispielen nach den Fig. 1,2,4-6 federn die Zusatzzungen 7,10 aufgrund ihrer geringen Stärke bzw. aufgrund des Schlitzes 8 und aufgrund der Einstellmöglichkeit bei Schraube 6 gemäss Pfeil B und legen sich daher in einer gewünschten und für die Fäden 4,9 optimalen Weise bei 30,35,48 gegen die entsprechende Klemmfläche des Klemmbackens 2.In all of the designs according to the invention, the additional clamping tongues 7, 10 form a front extension of the carrier tongue 5. In the examples according to FIGS. 1, 2, 4, 6, 6, the additional tongues 7, 10 spring due to their low thickness or due to the slot 8 and due to the Adjustment possibility for screw 6 according to arrow B and therefore lie against the corresponding clamping surface of the clamping jaw 2 in a desired and optimal manner for the threads 4.9 at 30.35.48.

Eine erfindungsgemässe Bauart entsteht auch dann, wenn z. B. entsprechend Fig. 3 zwar nur eine einzige Klemmzunge 3 vorhanden ist, deren vorderer, die Spitze 45 umfassender Teil jedoch wesentlich dünner ausgebildet ist als der übrige Teil oder - bei gleicher Dicke - beispielsweise aus einem biegsamen Kunststoff, z. B. Polyamid (NYLON) besteht. Auch in diesen Fällen lässt sich erreichen, dass eine in Richtung B federnde, vordere Verlängerung der Klemmzunge vorliegt, durch welche in der erwähnten Weise Doppelschuss-Eintrag ermöglicht wird. Statt zwei Fäden können gegebenenfalls auch drei oder mehrere Fäden in den Einlaufschlitz 30 eingeführt werden. Die Zungen 5.7, 10 können z. B. aus Stahl bestehen. Nach dem Schußeintrag wird der Greifer 21 aus dem Webfach bewegt. Dabei gelangt ein an Zunge 5 angebrachter Ansatz 60 unter einen ortsfesten Nocken 70, wodurch die Zungen 5, 7 gegen ihre Federwirkung in Fig. 2 gemäß Pfeil D abwärts bewegt werden. Nunmehr kann Schlitz 30 durch eine Blas- oder Saugvorrichtung von Faserflug gereinigt werden.A design according to the invention also arises when z. B. according to FIG. 3, there is only a single clamping tongue 3, the front part comprising the tip 45, however, is substantially thinner than the rest of the part or - with the same thickness - for example made of a flexible plastic, for. B. polyamide (NYLON). In these cases, too, it can be achieved that there is a front extension of the clamping tongue which is resilient in direction B and which enables double-shot entry in the manner mentioned. Instead of two threads, three or more threads can optionally also be introduced into the inlet slot 30. The tongues 5.7, 10 can, for. B. consist of steel. After the weft entry, the gripper 21 is moved out of the shed. In this case, an attachment 60 attached to tongue 5 passes under a fixed cam 70, as a result of which tongues 5, 7 are moved downward according to arrow D against their spring action in FIG. 2. Slit 30 can now be cleaned of fiber fly by a blowing or suction device.

Claims (7)

1. A giver for a gripper loom and comprising a clamping tongue (5) which engages a clamping jaw (2) fixedly disposed in the giver and cooperating with such jaw to bound a clamping slot (30), the tongue (5) being operative to retain the weft yarn (4, 9) to be picked into the shed, characterised in that the clamping tongue (5) has at its free end (41) a prolongation (41) which also engages the clamping jaw (2) and which is resilient relatively thereto.
2. A giver according to claim 1, characterised in that the prolongation (41) is considerably thinner than the clamping tongue (5).
3. A giver according to claim 1, characterised in that the prolongation (41) comprises at least one additional tongue (7) which the clamping tongue (5) carries and which projects beyond the free end (42) thereof.
4. A giver according to any of claims 1 to 3, characterised in that the additional tongue (7) is formed with a longitudinal slot (8) to facilitate its resilience.
5. A giver according to any of claims 1 to 4, characterised in that the additional tongue (7) is so disposed on the carrier tongue (5) as to be adjustable transversely of its own length (10) and as to be so locatable (6).
6. A giver according to any of claims 2 to 5, characterised in that the carrier tongue (5) and additional tongue (7) are pressed transversely (A) to their flatness into resilient engagement with a web (27) of the giver casing (22, 23, 25, 26), such web engaging around the clamping jaw (2).
7. A giver according to claim 6, characterised in that the web (27) is formed with a trapezoidal recess (33) into which the tongues (5, 7) are pressed resiliently (A) and with whose inclined surfaces (33, 35) they co-operate to bound the clamping slot (35).
EP83810590A 1983-12-14 1983-12-14 Weft inserting device for a needle loom Expired EP0146663B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP83810590A EP0146663B1 (en) 1983-12-14 1983-12-14 Weft inserting device for a needle loom
DE8383810590T DE3375806D1 (en) 1983-12-14 1983-12-14 Weft inserting device for a needle loom
US06/673,085 US4587998A (en) 1983-12-14 1984-11-19 Filling-thread insertion gripper for a rapier weaving machine
JP59263130A JPS60146041A (en) 1983-12-14 1984-12-14 Conveyor grip for grip type loom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83810590A EP0146663B1 (en) 1983-12-14 1983-12-14 Weft inserting device for a needle loom

Publications (2)

Publication Number Publication Date
EP0146663A1 EP0146663A1 (en) 1985-07-03
EP0146663B1 true EP0146663B1 (en) 1988-03-02

Family

ID=8191581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810590A Expired EP0146663B1 (en) 1983-12-14 1983-12-14 Weft inserting device for a needle loom

Country Status (4)

Country Link
US (1) US4587998A (en)
EP (1) EP0146663B1 (en)
JP (1) JPS60146041A (en)
DE (1) DE3375806D1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6262952A (en) * 1985-09-11 1987-03-19 株式会社　石川製作所 Weft yarn feeder of shuttleless loom
EP0272206A3 (en) * 1986-11-19 1990-03-07 GebràœDer Sulzer Aktiengesellschaft Weft-inserting device for a needle loom
DE3923540A1 (en) * 1989-07-15 1991-01-24 Dornier Gmbh Lindauer GRIPPER HEAD FOR WEAVING MACHINES
CA2196004C (en) 1997-01-27 2000-01-18 Intertape Polymer Inc Scrims of improved tear strength
BE1011480A3 (en) * 1997-10-03 1999-10-05 Picanol Nv GRAVELER FOR A GRAPER WEAVING MACHINE.
BE1011604A3 (en) * 1997-12-11 1999-11-09 Picanol Nv GRAB BODY FOR GRABS for a weaving machine.
DE19838781A1 (en) * 1998-08-26 2000-03-02 Picanol Nv Slave gripper for a rapier weaving machine
ATE365241T1 (en) * 2002-08-30 2007-07-15 Promatech Spa IMPROVEMENTS TO WEFT THREAD CLIPPERS FOR WEAVING MACHINES AND TO WEAVING MACHINES WITH GUIDING MEANS THEREOF
EP1540058B1 (en) * 2002-09-20 2009-10-28 Picanol N.V. Feed rapier for a rapier loom
BE1016052A3 (en) * 2004-05-19 2006-02-07 Wiele Michel Van De Nv PNEUMATIC CONTROLLABLE WINDOW CLAMP FOR A WEAVING MACHINE.
US8129294B2 (en) * 2005-01-17 2012-03-06 Tape Weaving Sweden Ab Woven material comprising tape-like warp and weft, and an apparatus and method for weaving thereof
JP4866369B2 (en) * 2005-01-17 2012-02-01 テープ ウィービング スウェーデン エービー Method and apparatus for weaving tape-like warp and weft, and material thereof
DE502006002809D1 (en) * 2006-01-06 2009-03-26 Sultex Ag Bringer rapier for a rapier loom
EP1918437A1 (en) * 2006-11-02 2008-05-07 Sultex AG Method and device for weft insertion
EP3060707B1 (en) * 2013-10-24 2019-10-02 Vandewiele NV Giver rapier head, giver rapier, rapier weaving machine and method for inserting a weft thread in such a rapier weaving machine using such a giver rapier head

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES291993A1 (en) * 1963-09-19 1963-11-16 Balaguer Golobart Ramen Device for the clamping and pulling of weft yarns
US3580291A (en) * 1967-09-19 1971-05-25 Somet Soc Mec Tessile Filling carrier for use in shuttleless looms
CH592761A5 (en) * 1975-09-29 1977-11-15 Rueti Ag Maschf
IT1043118B (en) * 1975-10-03 1980-02-20 Noovopignone S P A PERFECTLY TO WEFT INSERTION DEVICES ON FRAMES WITH REAL ESTATE RESERVE
CH635624A5 (en) * 1979-02-05 1983-04-15 Saurer Ag Adolph DEVICE ON CONTINUOUS WEAVING MACHINE FOR THE TRANSFER OF THE WIFE TIP.

Also Published As

Publication number Publication date
JPS60146041A (en) 1985-08-01
EP0146663A1 (en) 1985-07-03
US4587998A (en) 1986-05-13
JPS618181B2 (en) 1986-03-12
DE3375806D1 (en) 1988-04-07

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