EP0233142B1 - Pince pour l'insertion de la trame dans un métier à pinces - Google Patents

Pince pour l'insertion de la trame dans un métier à pinces Download PDF

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Publication number
EP0233142B1
EP0233142B1 EP87810030A EP87810030A EP0233142B1 EP 0233142 B1 EP0233142 B1 EP 0233142B1 EP 87810030 A EP87810030 A EP 87810030A EP 87810030 A EP87810030 A EP 87810030A EP 0233142 B1 EP0233142 B1 EP 0233142B1
Authority
EP
European Patent Office
Prior art keywords
gripper
clamping
tongue
clamping strip
tip
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
EP87810030A
Other languages
German (de)
English (en)
Other versions
EP0233142A1 (fr
Inventor
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
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0233142A1 publication Critical patent/EP0233142A1/fr
Application granted granted Critical
Publication of EP0233142B1 publication Critical patent/EP0233142B1/fr
Expired legal-status Critical Current

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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
    • D03D47/23—Thread grippers
    • D03D47/236—Drawing grippers

Definitions

  • the invention relates to a gripper for weft insertion in a rapier weaving machine with a clamping hook for the weft thread and an associated clamping tongue which can be displaced in the longitudinal direction of the gripper under spring action in a housing, the clamping tongue being guided by an articulated connection with a lever for actuating the clamping tongue.
  • the clamping tongue head On the side opposite the clamping flank of the clamping hook, the clamping tongue head has a clamping surface lying obliquely to the longitudinal direction of the gripper for holding the weft thread during insertion.
  • a gripper of the type described in the opening paragraph is described in German Offenlegungsschrift No. 31 36 615.
  • the clamping tongue is articulated at one end to an angle lever via a tab and is moved in a longitudinal guide within the gripper when the angle lever is actuated. If no external force acts on the angle lever, it is pivoted counterclockwise via a leaf spring, whereby the clamping tongue is pressed into the wedge-shaped recess inside the clamping hook.
  • Similar constructions are also described in other publications, e.g. in European patent application No. 0 123 005. In both of the publications mentioned, straight guides are provided for the shaft of the clamping tongue, which sit inside the gripper housing.
  • the invention consists in that the clamping tongue is additionally guided on the tip of the clamping tongue.
  • the gripper housing and the clamping tongue shaft can be designed particularly simply and easily. Despite the low manufacturing costs, the gripper is suitable for a high insertion speed of the weft thread.
  • the gripper 6 is shown in more detail. It is screwed onto the gripper belt 5 and essentially consists of the housing 65 with the side walls 651 and 652, between which the clamping tongue 61 lies. It is partially protected by the cover 66, which is fastened in the housing 65 by means of the fastening screws 661 and 662.
  • the lever 64 is pivoted counterclockwise via its lever end 642 according to FIG. 5. He presses the spring 621 together via the bolt 643 and the tab 620. At the same time, the clamping tongue 61 is pulled substantially to the left in the longitudinal direction 60 of the gripper, and slides over the end of the spiral spring 622, which is mounted in the axis 623. As a result, the clamping tongue 61 tends to pivot about the bolt 643 counterclockwise.
  • the lever 64 is freely rotatably supported in the housing 65 by means of the bearing pin 641 and is released by the cam 30 after the start of the movement of the gripper to the right in the direction of the reed 8 according to FIG is pivoted to the right. As a result, the clamping tongue tip 611 is pressed against the clamping hook 63 from the inside.
  • An insert 630 sits in the clamping hook 63, as shown in FIG. 7. It shows the clamping tongue tip 611 within the clamping hook 63 in the position when no external force acts on the lever end 642.
  • the clamping tongue tip 611 is pressed against the clamping flank 631 due to the action of the compression spring 621.
  • the clamping tongue tip 611 On the opposite side of the clamping flank 631, the clamping tongue tip 611 has a groove 613 with which it sits on the projection 633 of the insert 630.
  • the game between the groove 613 and the spring 633 in the horizontal direction in FIG. 7 are chosen to be as narrow as possible so that no relative movements between the tongue tip 611 and the insert 630 are possible in this direction.
  • the tongue 633 and the groove 613 together form a form-fitting guide 615 for the tongue tip 611 in the clamping hook 63.
  • the tongue tip 611 is supported on the flank 632 of the insert 630.
  • the pressure force from the spring 621 is thus absorbed by the clamping flank 631 and by the flank 632.
  • the weft thread 10 is held between the tongue tip 611 and the insert 630 on the clamping flank 631.
  • the weft thread tip 10 ' is deflected downward by a gap between the clamping plate 612 and the insert 630 as shown in FIG. 7, as a result of which it is held more securely than without the clamping plate 612.
  • the clamping plate 612 is attached to the clamping tongue 61.
  • the tongue tip 611 is wedge-shaped at its end, since both the clamping flank 631, on which the tongue tip 611 lies flat, and the flank 632 with respect to the clamping flank 631 form an acute angle with a straight line through the Form gripper longitudinal direction 60.
  • the clamping tongue 61 is withdrawn from the clamping hook 63 due to the impact of the lever end 642 on the cam 30, it is pressed against the flank 632 due to the action of the spring 622 in FIG. 5.
  • FIG. 8 shows another embodiment of the insert 630 ', the tongue tip 611' and the clamping plate 612 'on the tongue tip 611'.
  • the angled projection 614 'of the clamping plate 612' engages behind the projection 633 'of the insert 630 ' in the groove 634 ', as a result of which the tongue tip 611' is positively guided in all directions within the drawing plane of FIG. 8 in relation to the insert 630 '.
  • the spiral spring 622 and the axis 623 can be omitted.
  • FIG. 9 shows, as a further embodiment of the invention, a play-free prismatic guide 615 " between the insert 630" and the tongue tip 611 ". Due to the action of the spring 622 in FIG. 5, the V-groove 613" of the tongue tip 611 "becomes free of play against the wedge-shaped projection 633 "pressed on the insert 630".
  • the component of the spring force in the longitudinal gripper direction 60 supports the action of the spring 621 in the return of the clamping tongue tip 611 in the clamping hook 63, while the force component of the spring 622 transversely to the gripper longitudinal direction 60
  • the tongue tip 611 lifts off the clamping flank 631 of the clamping hook 63 in the open position.

Landscapes

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

Claims (3)

1. Pince d'insertion des fils de trame équipant un métier à tisser à pinces, comprenant un crochet (63) de coincement du fil de trame (10) et une languette de coincement associée (61) pouvant coulisser dans un boîtier (65), dans le sens longitudinal (60) de la pince, sous l'action d'un ressort (621), cette languette de coincement (61) étant guidée par l'intermédiaire d'une liaison articulée avec un levier (64), en vue d'actionner ladite languette de coincement, caractérisée par le fait que la languette de coincement est additionnellement guidée sur la pointe (611) de cette languette.
2. Pince selon la revendication 1, caractérisée par le fait qu'un ressort de pression (621), destiné au rappel de la languette de coincement (61) dans le crochet de coincement (63), s'applique également sur la liaison articulée (643) entre la languette de coincement (61) et le levier (64).
3. Pince selon les revendications 1 et 2, caractérisée par le fait qu'un ressort (622) porte contre la languette de coincement (61) à l'oblique par rapport au sens longitudinal (60) de cette pince, une composante de la force élastique agissant dans le sens longitudinal de ladite pince accentuant l'effet du ressort de pression (621) lors du rappel, et l'autre composante agissant transversalement par rapport au sens longitudinal (60) de la pince poussant la pointe (611) de la languette de coincement à la position ouverte.
EP87810030A 1986-02-13 1987-01-19 Pince pour l'insertion de la trame dans un métier à pinces Expired EP0233142B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH670/86A CH669220A5 (de) 1986-02-13 1986-02-13 Greifer fuer den schussfadeneintrag bei einer greiferwebmaschine.
CH670/86 1986-02-13

Publications (2)

Publication Number Publication Date
EP0233142A1 EP0233142A1 (fr) 1987-08-19
EP0233142B1 true EP0233142B1 (fr) 1989-10-11

Family

ID=4192418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87810030A Expired EP0233142B1 (fr) 1986-02-13 1987-01-19 Pince pour l'insertion de la trame dans un métier à pinces

Country Status (6)

Country Link
US (1) US4736777A (fr)
EP (1) EP0233142B1 (fr)
JP (1) JPH0772383B2 (fr)
CH (1) CH669220A5 (fr)
DE (1) DE3760744D1 (fr)
SU (1) SU1524812A3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1222876B (it) * 1987-10-12 1990-09-12 Vamatex Spa Coppia di pinze portatrama per telai di tessitura senza navette
IT1230000B (it) * 1989-04-21 1991-09-20 Somet Soc Mec Tessile Pinza portatrama a cursore mobile assialmente, per telai di tessitura senza navetta.
IT1274589B (it) * 1994-08-05 1997-07-18 Nuovo Pignone Spa Sistema perfezionato di presa e serraggio della trama nella pinza di trazione di un telaio tessile
IT1283380B1 (it) * 1996-07-31 1998-04-17 Vamatex Nuova Spa Pinza traente per telai di tessitura.
KR20000065330A (ko) * 1999-04-01 2000-11-15 이규건 셔틀리스 직기에 사용되는 위사 반송 그리퍼
KR20000065331A (ko) * 1999-04-01 2000-11-15 이규건 셔틀리스 직기에 사용되는 위사 반송 그리퍼
DE10114756A1 (de) * 2001-03-21 2002-09-26 Picanol Nv Nehmergreifer für eine Greiferwebmaschine
DE502006002809D1 (de) * 2006-01-06 2009-03-26 Sultex Ag Bringergreifer für eine Greiferwebmaschine
CN102912531A (zh) * 2011-08-02 2013-02-06 宜兴市宜泰碳纤维织造有限公司 碳纤维编织用碳素箭头装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1425542A (fr) * 1964-12-10 1966-01-24 Métier à tisser sans navettes
CH639439A5 (de) * 1979-09-05 1983-11-15 Rueti Ag Maschf Greiferkopf fuer webmaschinen mit entnahme des schussfadens von ortsfesten spulen.
IT1132844B (it) * 1980-09-15 1986-07-09 Nuovo Pignone Spa Perfezionamenti nelle pinze passatrama per telai tessili
DE3366208D1 (en) * 1983-04-18 1986-10-23 Rueti Ag Maschf Gripper for inserting a weft thread into a gripper weaving machine
IT1196137B (it) * 1984-06-07 1988-11-10 Vamatex Spa Coppia di pinze portatrama per telai di tessitura senza navette

Also Published As

Publication number Publication date
JPS62191545A (ja) 1987-08-21
JPH0772383B2 (ja) 1995-08-02
DE3760744D1 (en) 1989-11-16
CH669220A5 (de) 1989-02-28
EP0233142A1 (fr) 1987-08-19
US4736777A (en) 1988-04-12
SU1524812A3 (ru) 1989-11-23

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