EP0309700B1 - Métier à tisser à pinces - Google Patents

Métier à tisser à pinces Download PDF

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Publication number
EP0309700B1
EP0309700B1 EP88112967A EP88112967A EP0309700B1 EP 0309700 B1 EP0309700 B1 EP 0309700B1 EP 88112967 A EP88112967 A EP 88112967A EP 88112967 A EP88112967 A EP 88112967A EP 0309700 B1 EP0309700 B1 EP 0309700B1
Authority
EP
European Patent Office
Prior art keywords
gripper
adjusting device
loom according
clamp
gripper loom
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 - Lifetime
Application number
EP88112967A
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German (de)
English (en)
Other versions
EP0309700A1 (fr
Inventor
Francisco Speich
Erich Bühler
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.)
Textilma AG
Original Assignee
Textilma 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
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Application filed by Textilma AG filed Critical Textilma AG
Publication of EP0309700A1 publication Critical patent/EP0309700A1/fr
Application granted granted Critical
Publication of EP0309700B1 publication Critical patent/EP0309700B1/fr
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Classifications

    • 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

Definitions

  • the invention relates to a rapier weaving machine according to the preamble of claim 1.
  • Gripper weaving machines are known in large numbers, for example from DE-A-23 44 123, grippers are positively inserted or pulled out of a shed.
  • double-sided rapiers a rapier is inserted into the shed from each side of the fabric, a rapier pulling in a weft thread from one side, delivering it in the middle of the shed to the taker gripper, who then pulls the weft thread completely out of the shed.
  • EP-A-0 266 286 (published 04.05.88) describes such a rapier weaving machine with an actuating device for the opener which can be actuated during weaving in order to engage a run-on rail with a cam of the weft thread clamp in order to open it.
  • the task of this actuating device is to bring the run-up rail into engagement only when the weft thread clamp is to be opened, ie when picking up or dispensing a weft thread.
  • the run-up rail is withdrawn so as not to impair the movement of the hook.
  • An adjustment of the distance of the open position of the clamp from the shed or the selvedge is not provided and also not possible, since the adjusting device can only bring the run-up rail into two precisely defined positions, ie either ON or OFF.
  • the object of the invention is to further improve such rapier weaving machines in such a way that the distance of the open position of the rapier from the shed or the selvedge to the weft thread release after the weft thread is drawn in by the shed can be adjusted during operation of the rapier weaving machine.
  • the adjusting device of the present type is not used to switch the opener of the weft thread clamp ON or OFF, but remains in use both during the working stroke and during the idle stroke of the hook.
  • the adjusting device is equipped with a control device with which the distance of the open position of the clamp from the shed or the selvedge can be adjusted during weaving. With the help of the control device, it is possible to adjust the distance of the open position of the clamp from the shed or the selvedge after the weft thread has been pulled through the shed to the respective operating conditions.
  • the rapier weaving machine when the rapier weaving machine is at a standstill or crawling, it is possible to provide the open position at a greater distance from the shed and to bring it closer to the shed during operation, for example depending on the speed such that the distance can be reduced to the minimum possible.
  • Claim 2 describes a particularly simple solution of the adjusting device.
  • an embodiment according to Claim 3 is also possible.
  • Various variants are conceivable for the control drive of the actuating device, as specified in claims 4 to 8.
  • control for regulating the actuating device can now be carried out individually by hand or automatically, in which the actuating device is designed, for example, according to claim 8. Automatic control according to claim 9 is particularly advantageous.
  • the adjusting device is suitable both for rapier weaving machines with one-sided rapiers and, in particular, for those with double-sided rapiers.
  • FIGS 1 to 3 show a slave rapier 2 of a rapier weaving machine with two weft insertion devices, i.e. two-sided grippers after leaving the shed 6 formed by warp threads 4, through which the slave gripper 2 has drawn a weft thread 8.
  • the slave gripper 2 is fastened to an infeed belt 10 and contains a receiving slot 14 for the weft thread 8 on a lance-shaped part 12.
  • a clamp 16 is provided which can be pivoted about a bolt 18 and with one the receiving slot 14 cooperating clamping arm 20.
  • the clamping arm 22 forms an overrun cam 26 which, with an opener, i.e. an actuator 28 cooperates to open the clamp.
  • the adjusting device 28 contains a control bar 32 which can be pivoted about a bolt 30 and which cooperates with the overrun cam 26.
  • the inclination of the control bar 32 and thus the open position of the terminal can be regulated by an eccentric gear 34.
  • the eccentric pin 38 arranged on a disk 36 can either be operated by hand or by means of an electric motor 40 Microprocessor-equipped control device of the rapier weaving machine can be.
  • This control device makes it possible to effect the open position early, i.e. with a short distance X1 from the shed or from the selvedge 43, if the control bar according to FIG. 2 is practically parallel to the direction of travel of the slave rapier. If, on the other hand, the control bar 32 forms an inclination to the running direction of the slave gripper, as shown in FIG. 3, the clamp 16 is opened late with a correspondingly large distance X2 from the shed 6 or the selvedge.
  • FIG. 4 shows a further exemplary embodiment of an actuating device 44 which has a control bar 46 which interacts with the run-up cam 26 of the terminal 16.
  • the latter contains a run-up curve 48 and is displaceable in the running direction 50 of the slave gripper 2.
  • the control bar 46 is mounted on the bolt 54 via slots 52.
  • a fluid-operated piston / cylinder unit 56 is used to regulate, the piston rod 58 of which is articulated on an arm 60 of the control strip 46.
  • the control i.e. Regulation of the adjusting device 44 can take place in a variety of ways, not shown in detail, analogous to the above statements.
  • FIG. 5 shows a further exemplary embodiment of an actuating device 62, which is designed similarly to that of the exemplary embodiment of FIGS. 2 and 3, but the control strip 32 is prestressed against the slave gripper 2 or its clamp 16 on the control strip by means of a spring 64 32 is a tension member 66, for example a cord, a belt or the like. Connected, which is guided via a deflection roller 68 to a control device 70 of the rapier weaving machine.
  • the control device can be, for example shedding device controlled by a microprocessor, for example a jar quard device, a control wire of which is connected to the traction element 66. The microprocessor can then control the control wire and thus the control device depending on the speed of the Grei ferwebmaschine.

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

Claims (10)

  1. Métier à tisser à pinces comportant au moins un dispositif d'introduction du fil de trame équipé d'une pince de prise (2) comportant une pince de fil (16), ouvrable et associé à un ouvreur (32, 46) situé a' l'extérieur de la nappe de fils de chaîne (6), côté sortie du fil de trame (8), l'ouvreur étant équipé d'un dispositif de manoeuvre (28, 44, 62) actionnable pendant le tissage pour ouvrir la pince (16), caractérisé en ce que le dispositif de manoeuvre (28, 44, 62) est équipé d'un dispositif de réglage (34, 52, 56 ; 66, 70) réglable pendant le tissage de manière à régler l'intervalle (X₁, X₃) entre la nappe (6) ou son bord (43) et le point d'ouverture de la pince (16).
  2. Métier à tisser à pinces selon la revendication 1, caractérisé en ce que le dispositif de manoeuvre (28) comporte une barrette de commande (32) pivotante, coopérant avec une came de libération (26) de la pince (16).
  3. Métier à tisser selon lu revendication 1, caractérisé en ce que le dispositif de manoeuvre (44) comporte une barrette de commande (46) présentant une rampe de libération (48) et peut coulisser dans la direction (50) de déplacement de la pince de prise (2) en coopérant avec une came de libération (26) de la pince (16).
  4. Métier à tisser selon une des revendications 1 à 3, caractérisé en ce que le dispositif de réglage (34) comporte un mécanisme (34) à came ou à excentrique.
  5. Métier a tisser à pinces selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif de réglage (34) est équipé d'un électroaimant ou d'un moteur électrique (40).
  6. Métier à tisser à pinces selon l'une des revendications 1 à 4, caractérisé on ce que le dispositif de réglage (52, 56) est équipé d'un moteur à fluide (56) de préférence un moteur pneumatique.
  7. Métier à tisser à pinces salon l'une des revendications 1 à 4, caractérisé en ce que le dispositif de réglage peut être manoeuvré à la main.
  8. Métier à tisser à pinces selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif de réglage (66, 70) est relié par un organe de traction (66) à un dispositif de commande (70), de préférence un dispositif de commande de la foule qui peut commander le dispositif de réglage selon un programme préimposé.
  9. Métier à tisser à pinces selon une des revendications 1 à 7, caractérisé en ce qu'il comporte un dispositif de commande (42, 70) équipé d'un microprocesseur, le dispositif de réglage (34 ; 52, 56 ; 66, 70) pour sa commande, étant relié nu dispositif de commande (42, 70).
  10. Métier à tisser à pinces selon une des revendications 1 à 9, caractérisé en ce qu'il comporte deux dispositifs d'introduction de fil de trame, l'un étant équipé d'une pince de transfert et l'autre d'une pince de prise (2), le dispositif de réglage (34 ; 52, 56 ; 66, 70) étant associé à la pince de prise.
EP88112967A 1987-10-02 1988-08-10 Métier à tisser à pinces Expired - Lifetime EP0309700B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3849/87 1987-10-02
CH384987 1987-10-02

Publications (2)

Publication Number Publication Date
EP0309700A1 EP0309700A1 (fr) 1989-04-05
EP0309700B1 true EP0309700B1 (fr) 1992-12-23

Family

ID=4264796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112967A Expired - Lifetime EP0309700B1 (fr) 1987-10-02 1988-08-10 Métier à tisser à pinces

Country Status (5)

Country Link
US (1) US4949762A (fr)
EP (1) EP0309700B1 (fr)
JP (1) JP2683721B2 (fr)
DE (2) DE3812966A1 (fr)
ES (1) ES2037159T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000508722A (ja) * 1996-04-19 2000-07-11 ピカノール エヌ．ヴィ． 織機のグリッパのグリッパクランプを開口するための装置
BE1010195A3 (nl) * 1996-04-19 1998-02-03 Picanol Nv Inrichting en werkwijze voor het openen van een grijperklem.
DE29908543U1 (de) * 1999-05-14 1999-08-12 Lindauer Dornier Gmbh, 88131 Lindau Steuereinrichtung zur Betätigung des Klemmhebels eines Greifers, insbesondere eines Nehmergreifers in Greiferwebmaschinen
DE10134504A1 (de) * 2001-07-05 2003-01-16 Picanol Nv Verfahren und Vorrichtung zum Öffnen einer Greiferklemme eines Greifers einer Webmaschine
ITMI20030293U1 (it) * 2003-06-26 2004-12-27 Promatech Spa Apripinza motorizzato perfezionato
BE1018774A3 (nl) * 2009-06-10 2011-08-02 Picanol Nv Grijpereenheid, controlesysteem voor een grijpereenheid en weefmachine.
BE1023036A1 (nl) 2015-05-07 2016-11-09 Picanol Nv Grijperopener voor een weefmachine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2837124A (en) * 1953-06-09 1958-06-03 Ancet Victor Marie Joseph Shuttleless weaving loom
CH460661A (fr) * 1965-03-27 1968-07-31 Durand Marcel Métier à tisser à aiguille
DE1967192U (de) * 1966-06-10 1967-08-24 Nuova San Giorgio Spa Vorrichtung zum ziehen und befreien des schussgarnes in schuetzenlosen webstuehlen.
GB1447861A (en) * 1972-08-31 1976-09-02 Mackie & Sons Ltd J Looms and weft inserters therefor
GB1460145A (en) * 1973-01-24 1976-12-31 Mackie Sons Ltd Looms
US3927699A (en) * 1974-10-29 1975-12-23 Rockwell International Corp Weft carrier control apparatus
CH611354A5 (fr) * 1975-04-17 1979-05-31 Dornier Gmbh Lindauer
DE2536022C3 (de) * 1975-08-13 1979-09-20 Jean Guesken Gmbh & Co Kg, 4060 Viersen Schußfaden-Eintragvorrichtung für Webmaschinen mit gegenläufig bewegbaren Greiferstangen
NL155604B (nl) * 1975-10-06 1978-01-16 Picanol Nv Aandrijfinrichting voor naalden op een naaldgetouw.
DE3512303C1 (de) * 1985-04-04 1986-06-12 Lindauer Dornier Gmbh, 8990 Lindau Einrichtung an schuetzenlosen Webmaschinen mit Schusseintrag durch mit Klemmvorrichtungen versehene Greiferstangen
FR2606040B1 (fr) * 1986-10-31 1988-12-02 Materiel Textile Ste Alsacienn Dispositif pour l'insertion des fils de trame sur les metiers a tisser sans navette

Also Published As

Publication number Publication date
EP0309700A1 (fr) 1989-04-05
DE3812966A1 (de) 1989-04-20
JP2683721B2 (ja) 1997-12-03
US4949762A (en) 1990-08-21
DE3876921D1 (de) 1993-02-04
JPH01111043A (ja) 1989-04-27
ES2037159T3 (es) 1993-06-16

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