EP2063008A1 - Dispositif d'accroche pour l'introduction d'un fil de trame d'une machine à tisser à pince - Google Patents

Dispositif d'accroche pour l'introduction d'un fil de trame d'une machine à tisser à pince Download PDF

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Publication number
EP2063008A1
EP2063008A1 EP07022657A EP07022657A EP2063008A1 EP 2063008 A1 EP2063008 A1 EP 2063008A1 EP 07022657 A EP07022657 A EP 07022657A EP 07022657 A EP07022657 A EP 07022657A EP 2063008 A1 EP2063008 A1 EP 2063008A1
Authority
EP
European Patent Office
Prior art keywords
gripper
weft thread
clamping
weft
thread
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.)
Withdrawn
Application number
EP07022657A
Other languages
German (de)
English (en)
Inventor
Peter Rickenbach
Stefan Lenzin
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
Application filed by Textilma AG filed Critical Textilma AG
Priority to EP07022657A priority Critical patent/EP2063008A1/fr
Publication of EP2063008A1 publication Critical patent/EP2063008A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a gripper device for the weft insertion of a rapier loom according to the preamble of claim 1.
  • rapier looms of the weft thread is usually introduced by a Bringgreifer from one side into the shed and then - usually in about the middle of the shed - passed a Holgreifer, which then pulls the weft from the shed.
  • a gripper device is formed in both grippers. The grippers move along along guide elements which are attached to the reed.
  • a gripper device comprises two positive clamping jaws, which are arranged on a gripper body. In this case, then the weft thread between the jaws is clamped feasible.
  • the gripper device can be opened, whereby the weft thread is released. The opening is usually done by a movement of a jaw, so that the weft thread then rests freely on the lower jaw.
  • a first approach to solving this problem is from the EP-A-0 940 490 known in which it is proposed, the thread clamp with each other form lying elevations and depressions extending transversely to the Einlegevichtung of festzuhaltenden of the thread clamp thread.
  • the elevations which are optionally deformable, have edges for retaining the thread.
  • This based on the sawtooth thread clamp is very complicated and calls for a kink and notch effect for holding the thread. The latter leads to damage to the threads to be held.
  • such thread clamps are not universally applicable but must be tailored to the thread quality and thread thickness individually.
  • CH-A-556 930 It is known to form a gripper with a movable clamping part and a fixed abutment, wherein on the abutment a soft elastic pad is provided with a floating mounted thereon, wear-resistant support member.
  • the in the CH-A-556 930 proposed embodiment is characterized in that the support member held by its shape and the elasticity of the soft elastic pad (clamped) and thereby replacement or removal of the support member is made possible.
  • additional elements - such as spacers, a projection and holes - must be provided.
  • the floating storage involves the risk that, especially at high speeds of loom, the floating support dissolves and leads to disturbances of operation and damage to the weft.
  • the object of the invention is to improve a gripper device for the weft insertion of a rapier of the type described above, without the disadvantages of CH-A-556 930 or the EP-A-0 940 490 to have to accept. Damage to the weft thread by the clamping operation and weft insertion with the clamped weft yarn are to be avoided, especially with fine weft thread material.
  • the object is achieved by a gripper device according to claim 1.
  • the measures of the invention initially have the consequence that the weft can be picked up and transported gently, since a hard terminals is avoided.
  • the elastic intermediate member dampens the harmful transmission of machine vibrations on the yarn to be transported.
  • the production of the gripper is simple and can be carried out precisely and ensures safe, trouble-free and low-wear operation even at high speeds of the weaving machine.
  • both jaws of the gripper have a glued intermediate layer of elastic material (claim 4).
  • the jaws may have flat clamping surfaces or toothed clamping surfaces. (Claim 5 and 6)
  • FIG. 1 is of the designated as 2 rapier head of a Bringgreifer, which is to cooperate with a similar trained Holgreifer, has a gripper body 8, on which the lower jaw 10 and the upper jaw 16 is arranged.
  • the upper jaw 16 can be opened by a conventional mechanism having a torsion spring with respect to the lower jaw in order to receive or deliver a weft yarn can. When closing the weft thread is clamped and can be transported in the closed state of the gripper.
  • the upper jaw 16 forms with the lower jaw 10 in the closed state of the gripper a wave-shaped form-fitting to clamp the weft firmly.
  • Jaw 16 especially even with a very slight tilting of the upper jaw 16 against the lower jaw 10 - or on the other hand at a very high shot frequency of the rapier weaving machine with the corresponding hard closing movements is too heavily loaded, which may in particular lead to fibril fractures are present embodiment, both the upper jaw 16 as well as the lower jaw 10 with parallel glued or vulcanized rubber inserts 12 and 14 arranged on the gripper body. The thickness and hardness of the bonded rubber inserts the intended closing speed and the closing force of the positive connection between the jaws 16 and 10 are adjusted.
  • the positive connection is not provided over the entire gripper width, but only at the edge.
  • a gap 18 is formed between the jaws 10 and 16 in this embodiment.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP07022657A 2007-11-22 2007-11-22 Dispositif d'accroche pour l'introduction d'un fil de trame d'une machine à tisser à pince Withdrawn EP2063008A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07022657A EP2063008A1 (fr) 2007-11-22 2007-11-22 Dispositif d'accroche pour l'introduction d'un fil de trame d'une machine à tisser à pince

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07022657A EP2063008A1 (fr) 2007-11-22 2007-11-22 Dispositif d'accroche pour l'introduction d'un fil de trame d'une machine à tisser à pince

Publications (1)

Publication Number Publication Date
EP2063008A1 true EP2063008A1 (fr) 2009-05-27

Family

ID=39365574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07022657A Withdrawn EP2063008A1 (fr) 2007-11-22 2007-11-22 Dispositif d'accroche pour l'introduction d'un fil de trame d'une machine à tisser à pince

Country Status (1)

Country Link
EP (1) EP2063008A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103221598A (zh) * 2010-11-18 2013-07-24 林道尔·多尼尔有限责任公司 用于在片梭织机上引入纬纱的片梭头
CN103789910A (zh) * 2012-11-02 2014-05-14 吴江市嘉运纺织整理有限公司 一种织机纱线夹持器
CN104975410A (zh) * 2014-10-23 2015-10-14 铜陵梧桐树农业发展有限公司 一种用于剑杆织机的接纬剑

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH556930A (de) 1972-08-14 1974-12-13 Dornier Gmbh Lindauer Schussfadeneintragvorrichtung an schuetzenlosen webmaschinen.
DE2517011B1 (de) * 1975-04-17 1976-05-26 Dornier Gmbh Lindauer Klemmvorrichtung an greiferkoepfen fuer schuetzenlose webmaschinen
GB2034769A (en) * 1978-11-15 1980-06-11 Saurer Ag Adolph A Thread Gripper
US5007463A (en) * 1988-08-19 1991-04-16 Nuovopignone-Industrie Meccaniche E Fonderia, S.P.A. Weft clamping system for inserter rapier
EP0940490A1 (fr) 1998-03-05 1999-09-08 Sulzer Rüti Ag Pince-fil pour un métier à tisser et métier à tisser avec un tel pince-fil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH556930A (de) 1972-08-14 1974-12-13 Dornier Gmbh Lindauer Schussfadeneintragvorrichtung an schuetzenlosen webmaschinen.
DE2517011B1 (de) * 1975-04-17 1976-05-26 Dornier Gmbh Lindauer Klemmvorrichtung an greiferkoepfen fuer schuetzenlose webmaschinen
GB2034769A (en) * 1978-11-15 1980-06-11 Saurer Ag Adolph A Thread Gripper
US5007463A (en) * 1988-08-19 1991-04-16 Nuovopignone-Industrie Meccaniche E Fonderia, S.P.A. Weft clamping system for inserter rapier
EP0940490A1 (fr) 1998-03-05 1999-09-08 Sulzer Rüti Ag Pince-fil pour un métier à tisser et métier à tisser avec un tel pince-fil

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103221598A (zh) * 2010-11-18 2013-07-24 林道尔·多尼尔有限责任公司 用于在片梭织机上引入纬纱的片梭头
CN103221598B (zh) * 2010-11-18 2014-11-05 林道尔·多尼尔有限责任公司 用于在片梭织机上引入纬纱的片梭头以及片梭织机
CN103789910A (zh) * 2012-11-02 2014-05-14 吴江市嘉运纺织整理有限公司 一种织机纱线夹持器
CN104975410A (zh) * 2014-10-23 2015-10-14 铜陵梧桐树农业发展有限公司 一种用于剑杆织机的接纬剑

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