EP0681043B1 - Dispositif pour l'actionnement contrÔlé d'une griffe dans un métier à tisser - Google Patents

Dispositif pour l'actionnement contrÔlé d'une griffe dans un métier à tisser Download PDF

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Publication number
EP0681043B1
EP0681043B1 EP95105895A EP95105895A EP0681043B1 EP 0681043 B1 EP0681043 B1 EP 0681043B1 EP 95105895 A EP95105895 A EP 95105895A EP 95105895 A EP95105895 A EP 95105895A EP 0681043 B1 EP0681043 B1 EP 0681043B1
Authority
EP
European Patent Office
Prior art keywords
slay
lever
control
roller
shaft
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
EP95105895A
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German (de)
English (en)
Other versions
EP0681043A1 (fr
Inventor
Siegfried Jäger
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.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
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Filing date
Publication date
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP0681043A1 publication Critical patent/EP0681043A1/fr
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Publication of EP0681043B1 publication Critical patent/EP0681043B1/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

Definitions

  • the invention relates to a device for the controlled actuation of the thread clamp of a gripper in weaving machines.
  • a device for the inevitable actuation of the thread clamp of weft insertion members in weaving machines is known. Then, with the shed open and in the middle of the shed, a first gripper transfers a weft thread to a second gripper. Subsequently, the weft thread is struck against the fabric edge by a reed which is connected to a sley which can be pivoted about the central axis of a shed shaft.
  • This device consists of a control lever actuating the thread clamp of the gripper, of a motion-controlled coupling connected to the sley, with one end of which the control lever is connected and the other end of which engages a roller lever carrying a scanning roller.
  • the scanning roller is operatively connected to a control eccentric driven synchronously with the weaving shaft.
  • a control eccentric driven synchronously with the weaving shaft.
  • An object of the invention is to provide a device for the controlled actuation of the thread clamp of a rapier in weaving machines, in which the number of articulation points on the way of power transmission, from the scanning roller that is operatively connected to the control eccentric to the control lever that actuates the thread clamp, is reduced to a minimum.
  • a further object of the invention is to largely or completely dispense with the spring element which is necessarily present in accordance with the prior art in connection with ensuring the abutment of the scanning roller on the control cam.
  • FIG. 1 shows a sley 1 with a leaf bar 2, which carries a reed 3.
  • the sley 1 is pivotable about the central axis 5 of the sley shaft 4.
  • a T-shaped shop sole 6 is also attached to the sheet bar 2.
  • Each of the grippers has a thread clamp 8 which is actuated by a control lever 10 which can be moved in and out of the shed 9 by the lower warp threads 9a of the shed 9 during the transfer and takeover of the weft thread.
  • the lower warp threads 9a and the upper warp threads 9b are brought together in a binding point which incorporates the weft thread and forms the stop edge 11 of the fabric 12.
  • the control lever 10 is fixedly attached to one free end of the coupling 13.
  • the other end of the coupling 13 is articulated to a bearing point 14 of a roller lever 16 which is rotatably arranged about a machine-fixed axis 15.
  • a scanning roller 17 is also rotatably mounted in this bearing point.
  • the bearing point 14 of the roller lever 16 is loaded by at least one spring element 20 acting in the direction of the control eccentric 18. This ensures that the scanning roller 17 is constantly on the cam 18a of the control eccentric 18.
  • a leaf spring assembly 21 is fastened in a machine-fixed tensioning element 22, which e.g. acts on the roller lever 16 itself or is effective directly in the articulation point 14 of the coupling 13 and the scanning roller 17.
  • an articulation point 23 is provided on the coupling 13, to which one end of a rocker arm 24 is articulated.
  • the other end of the rocker 24 is articulated in the hinge point 25 of a support 26 arranged on the sley 1 and directed away from it.
  • the coupling 13 together with the sley 1 executes a reciprocating movement symbolically represented by the double arrow 27.
  • the control mechanism consists of a control eccentric 18, known per se, which is connected in a rotationally fixed manner to a shaft 28 and which is operatively connected to the spring-loaded roller lever 16 via the scanning roller 17.
  • FIG. 3 shows an embodiment of the solution according to the invention according to claim 2.
  • the roller lever 16 is designed as an angle lever which carries a rotatingly mounted scanning roller 17 and 29 on the first lever arm 16a and on the second lever arm 16b.
  • the roller lever 16 is rotatably supported about the machine-fixed axis 15.
  • the control eccentric consists of a pair of individual control eccentrics 30.31.
  • the two control eccentrics 30, 31 are rotatably connected to the shaft 28.
  • the scanning roller 17 is assigned to the control curve 30a and the scanning roller 29 to the control curve 31a of the control cam 30 and 31, respectively.
  • the spring elements 20, 21 shown in FIGS. 1 and 2 are not required. Otherwise, the device has the features described and illustrated in FIGS. 1 and 2, so that a further description of the exemplary embodiment can be dispensed with.

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

Claims (2)

  1. Dispositif pour l'actionnement commandé ("contrôlé") du pince-fil (8) d'une griffe ou lance (7) dans des métiers à tisser, dispositif dans le cas duquel, la foule étant ouverte et en milieu de foule, une première griffe transmet un fil de trame à une seconde griffe puis le fil de trame est rabattu sur le bord ou la lisière (11) du tissu par un peigne (3) relié à un battant (1) pouvant osciller autour de l'axe géométrique médian (5) d'un arbre (4) de battant, dispositif consistant en un levier (10) de commande pouvant actionner le pince-fil (8) et en une bielle (13) reliée au battant (1) et à mouvement commandé, dont une extrémité est reliée au levier de commande (10) et dont l'autre extrémité attaque un levier (16) portant un galet tâteur ou palpeur (17), le galet tâteur (17) étant en liaison active avec un excentrique de commande (18) entraîné en synchronisme avec l'arbre de battant, dispositif caractérisé en ce que, dans un premier point d'articulation (14) commun, situé au-dessous de l'axe géométrique médian (5) ou (28a) de l'arbre d'excentrique (28) et de l'arbre de battant (4), du levier (16) porteur de galet, le galet tâteur (17) attaque l'autre extrémité libre de la bielle (13) et, si cela est nécessaire, au moins un ressort (20) agissant en direction de l'excentrique de commande (18), de façon à surmonter une composante verticale de force dominant le pince-fil (8) et en ce que, en un second point d'articulation (25), situé à l'extérieur de l'arbre (4) du battant (1), un levier oscillant (24) attaque en étant relié avec un point d'articulation (23) situé sur la bielle (13) au-dessous du levier (10) de commande.
  2. Dispositif pour l'actionnement commandé ("contrôlé") du pince-fil (8) d'une griffe ou lance (7) dans des métiers à tisser, dispositif dans le cas duquel, la foule étant ouverte et en milieu de foule, une première griffe transmet un fil de trame à une seconde griffe,puis le fil de trame est rabattu sur le bord ou la lisière (11) du tissu par un peigne (3) relié à un battant (1) pouvant osciller autour de l'axe géométrique médian (5) d'un arbre (4) de battant, dispositif consistant en un levier (10) de commande pouvant actionner le pince-fil (8) et en une bielle (13) à mouvement commandé, reliée au battant et dont une extrémité est reliée au levier de commande (10) et dont l'autre extrémité attaque un levier (16) portant un galet tâteur ou palpeur (17), le galet tâteur (17) étant en liaison active avec un excentrique de commande (18) entraîné en synchronisme avec l'arbre de battant, dispositif caractérisé en ce que le levier (16) porte-galet est réalisé sous forme d'un levier coudé oscillant autour d'un axe (15) fixe de la machine, ce levier portant un galet tâteur (17) fermé ou (29) monté rotatif sur un bras de levier (16a) et sur l'autre bras de levier (16b), en ce que chaque galet tâteur (17, 29) est en contact avec la came de commande (30a, 31a), à chaque fois associée, d'un excentrique de commande (30, 31), faisant partie d'une paire d'excentriques de commande et entraîné en continu et de manière synchrone pour entraîner l'arbre (4) de battant, en ce que l'autre extrémité libre de la bielle (13) attaque le premier bras de levier (16a) dans la zone de montage du galet tâteur (17) et en ce que, en un second point d'articulation (25) situé au-dessous de l'arbre (4) de battant sur le battant (1), un levier oscillant (24) attaque et ce levier est relié à un point d'articulation (23) situé sur la bielle (13) au-dessous du levier de commande.
EP95105895A 1994-05-05 1995-04-20 Dispositif pour l'actionnement contrÔlé d'une griffe dans un métier à tisser Expired - Lifetime EP0681043B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4415862A DE4415862C1 (de) 1994-05-05 1994-05-05 Einrichtung zum gesteuerten Betätigen der Fadenklemme eines Greifers in Webmaschinen
DE4415862 1994-05-05

Publications (2)

Publication Number Publication Date
EP0681043A1 EP0681043A1 (fr) 1995-11-08
EP0681043B1 true EP0681043B1 (fr) 1997-07-30

Family

ID=6517364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105895A Expired - Lifetime EP0681043B1 (fr) 1994-05-05 1995-04-20 Dispositif pour l'actionnement contrÔlé d'une griffe dans un métier à tisser

Country Status (4)

Country Link
US (1) US5566725A (fr)
EP (1) EP0681043B1 (fr)
JP (1) JP2682965B2 (fr)
DE (2) DE4415862C1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070232074A1 (en) * 2006-03-31 2007-10-04 Kramadhati Ravi Techniques for the synthesis of dense, high-quality diamond films using a dual seeding approach
DE102009036589A1 (de) 2009-08-07 2011-02-10 Lindauer Dornier Gmbh Vorrichtung zum Übergeben eines bandförmigen Schussmaterials
DE102009037127A1 (de) * 2009-08-11 2011-02-17 Lindauer Dornier Gmbh Greiferkopf einer Webmaschine
EP3512991B1 (fr) * 2016-09-14 2024-01-17 Kurkute, Sanjay Mécanisme de préhension de trame pour métiers à tisser sans navette

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1535498B1 (de) * 1966-09-06 1970-07-23 Dornier Gmbh Lindauer Fuehrung fuer von beiden Seiten her in das Webfach vorgeschobene und wieder zurueckgezogene Greiferstangen durch Fuehrungsfinger bei schuetzenlosen Webmaschinen
FR2048284A5 (en) * 1969-12-17 1971-03-19 Dornier Gmbh Lindauer Shuttleless weaving loom
US3665975A (en) * 1970-01-19 1972-05-30 Dornier Gmbh Lindauer Weft thread inserting mechanism for looms
GB1582326A (en) * 1976-04-09 1981-01-07 Mackie & Sons Ltd J Looms
DE2934474B1 (de) * 1979-08-25 1980-10-16 Dornier Gmbh Lindauer Einrichtung zur zwangslaeufigen Betaetigung der Klemmvorrichtung von Schussfadeneintragorganen bei schuetzenlosen Webmaschinen
DE3320200C2 (de) * 1983-06-03 1985-06-13 Lindauer Dornier Gmbh, 8990 Lindau Einrichtung zur zwangsläufigen Betätigung der Klemmvorrichtung von Schußfadeneintragorganen bei schützenlosen Webmaschinen
DE59306482D1 (de) * 1992-02-28 1997-06-26 Dornier Gmbh Lindauer Vorrichtung zur Führung von Band- oder Stangengreifer in Webmaschinen

Also Published As

Publication number Publication date
DE59500432D1 (de) 1997-09-04
JP2682965B2 (ja) 1997-11-26
US5566725A (en) 1996-10-22
DE4415862C1 (de) 1995-04-27
JPH083840A (ja) 1996-01-09
EP0681043A1 (fr) 1995-11-08

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