EP0311945A1 - Pair of weft grippers for shuttleless looms - Google Patents

Pair of weft grippers for shuttleless looms Download PDF

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Publication number
EP0311945A1
EP0311945A1 EP88116764A EP88116764A EP0311945A1 EP 0311945 A1 EP0311945 A1 EP 0311945A1 EP 88116764 A EP88116764 A EP 88116764A EP 88116764 A EP88116764 A EP 88116764A EP 0311945 A1 EP0311945 A1 EP 0311945A1
Authority
EP
European Patent Office
Prior art keywords
slider
grippers
pair
gripper
spring
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Withdrawn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
EP88116764A
Other languages
German (de)
English (en)
French (fr)
Inventor
Luigi Pezzoli
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.)
Vamatex SpA
Original Assignee
Vamatex SpA
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 Vamatex SpA filed Critical Vamatex SpA
Publication of EP0311945A1 publication Critical patent/EP0311945A1/en
Withdrawn legal-status Critical Current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
    • 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 present invention concerns a pair of weft grippers for shuttleless looms, namely a pair of members by means of which the weft yarns are inserted at one end of the loom and carried to the opposite end thereof through the warp shed.
  • the present invention particularly concerns improvements in a pair of weft grippers, of the type in which the weft yarn is retained by engagement of the head of a slider, movable longitudinally to the gripper, with a cooperating counteracting surface of the body of said gripper, said slider being stressed by a spring.
  • the slider in these grippers has always been released by stretching an element with flexible lamina controlling the same, through winding of said element onto a cylindrical pin or - more recently - onto a cam with a slightly curved contour (see for example the European Patent Application No. 85106398.2 of the same Applicant), said pin or cam being caused to rotate by a release lever carried by the gripper body and rotated in turn by a fixed element of the loom engaging therewith.
  • the flexible control element is always highly and frequently stressed, and it tends to fatigue break after a more or less long period of use of the grippers, with evident damage for the production requirements.
  • the object of the present invention is to eliminate this drawback by supplying, for the purpose, a pair of grippers - a carrying and, respec­tively, a drawing gripper - of the aforementioned type, characterized in that, in each gripper, the release of the slider against the action of the spring stressing the same is obtained by direct engagement of a snug of said release lever with a pawl fixedly connected to the slider.
  • said pawl fixedly connected to the slider also supports the spring stressing said slider.
  • the pair of weft grippers comprises the carrying gripper P of figure 1 and the drawing gripper T of figure 2. Both these grippers have a general structure of known type, which comprises a body 1 of highly rigid synthetic plastic material, into which is mounted a metal slider 2 moving longitudinally, said slider being stressed by a spring 3 towards the tip 4 of the body 1, so as to engage with its own head 5 a counteracting surface 6 of said body and lock the weft yarn t between these two elements 5 and 6.
  • the snug 7 is preferably formed in one piece with the lever 8.
  • the grippers adopting this device are far lighter and more compact, as they can be constructed with positively reduced dimensions and weights, thereby achieving important advantages especially on looms with high working speed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP88116764A 1987-10-12 1988-10-10 Pair of weft grippers for shuttleless looms Withdrawn EP0311945A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2222987 1987-10-12
IT22229/87A IT1222876B (it) 1987-10-12 1987-10-12 Coppia di pinze portatrama per telai di tessitura senza navette

Publications (1)

Publication Number Publication Date
EP0311945A1 true EP0311945A1 (en) 1989-04-19

Family

ID=11193370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116764A Withdrawn EP0311945A1 (en) 1987-10-12 1988-10-10 Pair of weft grippers for shuttleless looms

Country Status (6)

Country Link
EP (1) EP0311945A1 (it)
JP (1) JPH01156547A (it)
KR (1) KR890006886A (it)
CN (1) CN1033850A (it)
BR (1) BR8805193A (it)
IT (1) IT1222876B (it)

Cited By (1)

* 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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102251337A (zh) * 2011-07-25 2011-11-23 青岛铠硕纺机有限公司 纬纱夹持器
CN104805571B (zh) * 2015-04-17 2016-04-06 徐向忠 一种无铰摇杆滑块机构及剑杆织机用接纬剑头
IT201700066823A1 (it) * 2017-06-15 2018-12-15 Itema Spa Sistema perfezionato di presa/rilascio del filo di trama in un telaio tessile a proiettile
CN111286846B (zh) * 2020-04-15 2021-04-16 扬州市郭氏精密机械制造有限公司 一种织布用纱夹
CN112760787A (zh) * 2021-02-01 2021-05-07 张家港市大新毛纺有限公司 一种新型剑杆织机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544084A1 (de) * 1975-09-29 1977-03-31 Co Ma S A R L Schusseintragsvorrichtung einer webmaschine
GB2083844A (en) * 1980-09-15 1982-03-31 Nuovo Pignone Spa Weft transfer devices in shuttleless looms
EP0164628A2 (en) * 1984-06-07 1985-12-18 VAMATEX S.p.A. Weft-carrying grippers for shuttleless weaving looms
EP0233142A1 (de) * 1986-02-13 1987-08-19 GebràœDer Sulzer Aktiengesellschaft Greifer für den Schussfadeneintrag bei einer Greiferwebmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544084A1 (de) * 1975-09-29 1977-03-31 Co Ma S A R L Schusseintragsvorrichtung einer webmaschine
GB2083844A (en) * 1980-09-15 1982-03-31 Nuovo Pignone Spa Weft transfer devices in shuttleless looms
EP0164628A2 (en) * 1984-06-07 1985-12-18 VAMATEX S.p.A. Weft-carrying grippers for shuttleless weaving looms
EP0233142A1 (de) * 1986-02-13 1987-08-19 GebràœDer Sulzer Aktiengesellschaft Greifer für den Schussfadeneintrag bei einer Greiferwebmaschine

Cited By (1)

* 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

Also Published As

Publication number Publication date
KR890006886A (ko) 1989-06-16
IT1222876B (it) 1990-09-12
JPH01156547A (ja) 1989-06-20
BR8805193A (pt) 1989-05-23
IT8722229A0 (it) 1987-10-12
CN1033850A (zh) 1989-07-12

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