EP0233142A1 - 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
EP0233142A1
EP0233142A1 EP87810030A EP87810030A EP0233142A1 EP 0233142 A1 EP0233142 A1 EP 0233142A1 EP 87810030 A EP87810030 A EP 87810030A EP 87810030 A EP87810030 A EP 87810030A EP 0233142 A1 EP0233142 A1 EP 0233142A1
Authority
EP
European Patent Office
Prior art keywords
gripper
clamping
tongue
clamping tongue
longitudinal direction
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.)
Granted
Application number
EP87810030A
Other languages
German (de)
English (en)
Other versions
EP0233142B1 (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
Sulzer 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 Sulzer AG, Gebrueder Sulzer AG filed Critical 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 that can be displaced in the longitudinal direction of the gripper under spring action in a housing.
  • 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 at the outset is described in German Offenlegungsschrift No. 3l 36 6l5.
  • the clamping tongue is articulated at one end to an angle lever via a bracket 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, for example in European patent application No. 0123 005. In both of the publications mentioned, straight guides for the shaft are the clamp tongue provided, which sit inside the gripper housing.
  • the invention consists in that the clamping tongue is guided on the one hand by an articulated connection with a lever for actuating the clamping tongue and on the other hand 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.
  • a gear 4 for the gripper drive and the center supports 11 and 12 can be seen on a machine frame 1.
  • the reed 8, along which the gripper 6 is moved back and forth in the longitudinal direction 60 of the gripper 4l via the drive belt 5, can be seen as part of the sley above the center beams.
  • the weft thread 10 is inserted from right to left by the gripper 7 according to FIG. 2, which is also driven by a flexible belt 5, entering the weft thread up to the center of the reed 8 to the left, whereupon the gripper 6 takes over the weft thread and the Weft thread entry completed.
  • the lever end 642 runs on a cam 30, as a result of which the gripper 6 releases the inserted weft thread.
  • the belts 5 are guided to the left and right of the weaving machine frame by belt guides 5l and 52, respectively.
  • 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 65l and 652, between which the clamping tongue 6l lies. It is partially protected by the cover 66, which is fastened in the housing 65 by means of the fastening screws 66l and 662.
  • the weft thread l0 from FIG. 1 is held between the clamping hook 63 and the clamping tongue tip 6ll during the weft insertion.
  • the lever 64 is pivoted counterclockwise via its lever end 642 according to FIG. 5. He compresses the spring 62l via the bolt 643 and the tab 620.
  • the clamping tongue 6l is essentially pulled to the left in the longitudinal direction 60 of the gripper, sliding over the end of the spiral spring 622, which is mounted in the axis 623.
  • the clamping tongue 6l tends to pivot the pin 643 counterclockwise.
  • the lever 64 is freely rotatably mounted in the housing 65 by means of the bearing pin 64l 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 6ll 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 6ll within the clamping hook 63 in the position when no external force acts on the lever end 642.
  • the clamping tongue tip 6ll is pressed against the clamping flank 63l due to the action of the compression spring 62l.
  • the tongue tip 6ll On the opposite side of the clamping flank 63l, the tongue tip 6ll has a groove 6l3 with which it sits on the projection 633 of the insert 630.
  • the play between the groove 6l3 and the spring 633 in the horizontal direction in FIG. 7 is chosen to be as narrow as possible so that no relative movements between the tongue tip 6ll and the insert 630 are possible in this direction.
  • the spring 633 and the groove 6l3 together form a form-fitting guide 6l5 for the clamping tongue tip 6ll in the clamping hook 63.
  • the clamping tongue tip 6ll is supported on the flank 632 of the insert 630.
  • the pressure force from the spring 62l is thus absorbed by the clamping flank 63l and by the flank 632.
  • the weft thread l0 is held between the tongue tip 6ll and the insert 630 on the clamping flank 63l.
  • the weft thread tip l0 ' is deflected downwards by a gap between the clamping plate 6l2 and the insert 630 as shown in FIG. 7, as a result of which it is held more securely than without the clamping plate 6l2.
  • the clamping plate 6l2 is attached to the clamping tongue 6l.
  • the clamping tongue tip 6ll is wedge-shaped at its end, since both the clamping flank 63l, on which the clamping tongue tip 6ll lies flat, and the flank 632 with respect to the clamping flank 63l form an acute angle with a straight line through the Form gripper longitudinal direction 60.
  • the clamping tongue 6l 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 another embodiment of the insert 630 ', the tongue tip 6ll' and the clamping plate 6l2 'on the tongue tip 6ll' is shown.
  • the angled projection 6l4 'of the clamping plate 6l2' engages behind the projection 633 'of the insert 630' in the groove 634 ', whereby the tongue tip 6ll 'with respect to the insert 630' in all directions within the plane of FIG. 8 is guided positively.
  • the spiral spring 622 and the axis 623 can be omitted.
  • Fig. 9 shows a further embodiment of the invention, a play-free prismatic guide 6l5 '' between the insert 630 '' and the tongue tip 6ll ''. 5, the V-groove 6l3 '' of the tongue tip 6ll '' is pressed against the wedge-shaped projection 633 '' on the insert 630 '' without play.
  • the component of the spring force in the gripper longitudinal direction 60 supports the action of the spring 62l in the return of the clamping tongue tip 6ll in the clamping hook 63, while the force component of the spring 622 transversely to the gripper longitudinal direction 60
  • the tongue tip 6ll lifts off the clamping flank 63l of the clamping hook 63 in the open position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
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 true EP0233142A1 (fr) 1987-08-19
EP0233142B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0311945A1 (fr) * 1987-10-12 1989-04-19 VAMATEX S.p.A. Une paire de pinces à fil pour métiers sans navette
EP0394749A1 (fr) * 1989-04-21 1990-10-31 SOMET SOCIETA' MECCANICA TESSILE S.p.A. Griffe porteuse avec coulisseau axial pour métiers sans navette
EP0695820A1 (fr) * 1994-08-05 1996-02-07 NUOVO PIGNONE S.p.A. Système de blocage/accrochage pour la fin de fil dans la pince d'amenée d'un métier à tisser
EP0822279A1 (fr) * 1996-07-31 1998-02-04 NUOVA VAMATEX S.p.A. Pince de sortie pour métiers à tisser

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (4)

* 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
FR2464319A1 (fr) * 1979-09-05 1981-03-06 Rueti Ag Maschf Tete de griffe pour metiers a tisser avec prelevement du fil de trame a partir de bobines fixes
GB2083844A (en) * 1980-09-15 1982-03-31 Nuovo Pignone Spa Weft transfer devices in shuttleless looms
EP0123005B1 (fr) * 1983-04-18 1986-09-17 Maschinenfabrik Sulzer-Rüti Ag Pince pour l'insertion du fil de trame dans un métier à tisser à pince

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1196137B (it) * 1984-06-07 1988-11-10 Vamatex Spa Coppia di pinze portatrama per telai di tessitura senza navette

Patent Citations (4)

* 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
FR2464319A1 (fr) * 1979-09-05 1981-03-06 Rueti Ag Maschf Tete de griffe pour metiers a tisser avec prelevement du fil de trame a partir de bobines fixes
GB2083844A (en) * 1980-09-15 1982-03-31 Nuovo Pignone Spa Weft transfer devices in shuttleless looms
EP0123005B1 (fr) * 1983-04-18 1986-09-17 Maschinenfabrik Sulzer-Rüti Ag Pince pour l'insertion du fil de trame dans un métier à tisser à pince

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0311945A1 (fr) * 1987-10-12 1989-04-19 VAMATEX S.p.A. Une paire de pinces à fil pour métiers sans navette
EP0394749A1 (fr) * 1989-04-21 1990-10-31 SOMET SOCIETA' MECCANICA TESSILE S.p.A. Griffe porteuse avec coulisseau axial pour métiers sans navette
EP0695820A1 (fr) * 1994-08-05 1996-02-07 NUOVO PIGNONE S.p.A. Système de blocage/accrochage pour la fin de fil dans la pince d'amenée d'un métier à tisser
US5558133A (en) * 1994-08-05 1996-09-24 Nuovo Pignone S.P.A. Fill end catching/clamping system in the drive clamp of a loom
EP0822279A1 (fr) * 1996-07-31 1998-02-04 NUOVA VAMATEX S.p.A. Pince de sortie pour métiers à tisser

Also Published As

Publication number Publication date
JPS62191545A (ja) 1987-08-21
JPH0772383B2 (ja) 1995-08-02
EP0233142B1 (fr) 1989-10-11
DE3760744D1 (en) 1989-11-16
CH669220A5 (de) 1989-02-28
US4736777A (en) 1988-04-12
SU1524812A3 (ru) 1989-11-23

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