EP3231910B1 - Pince pour un métier à tisser à pince et procédé de fabrication d'une telle pince - Google Patents

Pince pour un métier à tisser à pince et procédé de fabrication d'une telle pince Download PDF

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Publication number
EP3231910B1
EP3231910B1 EP17166009.5A EP17166009A EP3231910B1 EP 3231910 B1 EP3231910 B1 EP 3231910B1 EP 17166009 A EP17166009 A EP 17166009A EP 3231910 B1 EP3231910 B1 EP 3231910B1
Authority
EP
European Patent Office
Prior art keywords
gripper
guiding
tongues
main body
clamping
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.)
Active
Application number
EP17166009.5A
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German (de)
English (en)
Other versions
EP3231910A2 (fr
EP3231910A3 (fr
Inventor
Koen Bruynoghe
Peter Garnett
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to PL17166009T priority Critical patent/PL3231910T3/pl
Publication of EP3231910A2 publication Critical patent/EP3231910A2/fr
Publication of EP3231910A3 publication Critical patent/EP3231910A3/fr
Application granted granted Critical
Publication of EP3231910B1 publication Critical patent/EP3231910B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/02—Axminster looms, i.e. wherein pile tufts are inserted during weaving
    • D03D39/08—Gripper Axminster looms
    • D03D39/083—Selecting mechanisms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J5/00—Shuttles
    • D03J5/06—Dummy shuttles; Gripper shuttles

Definitions

  • the present invention relates to a gripper for a gripper weaving machine, for example an Axminster gripper weaving machine, comprising two interconnected clamping parts movable with respect to one another for clamping, the first said clamping part comprising at least two guiding recesses and the second said clamping part comprising at least two corresponding guiding tongues protruding towards the first clamping part, the guiding recesses and guiding tongues being positioned such that the guiding recesses receive the guiding tongues for sliding movement therein when the clamping parts move with respect to one another.
  • the present invention additionally relates to a method for manufacturing such a gripper.
  • Grippers for Axminster gripper weaving machines are e.g. described in GB 1 344 979 A , EP 1 696 059 A2 and EP 1 365 052 B1 .
  • the gripper clamping parts are hingedly connected by means of a hinge joint and are provided with corresponding guiding tongues and guiding recesses for aligning the clamping parts during movement thereof.
  • the gripper clamping parts are interconnected by means of intermediate springy elements and are provided with staggered projections for aligning the clamping parts during movement thereof.
  • projections are however less suitable for aligning the clamping parts than guiding tongues and guiding recesses as in the grippers of GB 1 344 979 A and EP 1 696 059 A2 .
  • Such guiding tongues are however weaker parts of the gripper, which are subject to wear and can bend or break off. When the guiding tongues get worn out, the working of the gripper attenuates increasingly, especially when one of the guiding tongues breaks off, the other in itself not being able to assure a correct alignment of the clamping parts.
  • An object of the current invention is to provide a more failsafe version of such a gripper.
  • a gripper for a gripper weaving machine for example an Axminster gripper weaving machine, comprising two interconnected clamping parts movable with respect to one another for clamping, the first said clamping part comprising at least two guiding recesses and the second said clamping part comprising at least two corresponding guiding tongues protruding towards the first clamping part, the guiding recesses and guiding tongues being positioned such that the guiding recesses receive the guiding tongues for sliding movement therein when the clamping parts move with respect to one another and wherein the second clamping part comprises a tongue body comprising said guiding tongues and a main body to which the tongue body is fixed with a seam.
  • Such a seam forms a visible line that is formed when the main body and the tongue body are joined over a certain area. They can e.g. be joined by means of brazing or laser welding or gluing, etc. This can be done with or without adding additional material to the seam.
  • This seam now forms the weakest part of the clamping part.
  • the seam is much larger than when the guiding tongues would separately be joined to the main body. In this way, the seam is not too weak either, such that the correct working of such a gripper lasts for a comparable period as with the known grippers.
  • the guiding tongues can also be made stronger than when they are formed as an integral part of the clamping part.
  • the tongue body of a gripper comprises a base, from which the guiding tongues extend.
  • the main body is then preferably provided with a recess, in which the base of the tongue body is placed.
  • the base of the tongue body and the recess of the main body then have corresponding forms.
  • the two said guiding tongues preferably extend laterally on opposite faces of the tongue body, such that forces acting on the guiding tongues due to the entering of the first clamping part between the guiding tongues can at least partially compensate each other, such that the connection between the tongue body and the main body is less subject to these forces.
  • the guiding tongues are staggered.
  • the guiding recesses in the first clamping part are then also staggered, such that the first clamping part is less weakened due to the provision of the guiding recesses therein.
  • the guiding tongues are furthermore preferably positioned near the ends of the clamping parts between which the pile yarn is to be clamped, as the correct alignment of the clamping parts is most crucial at those ends.
  • the lengths of the guiding tongues and guiding recesses are chosen such that a part of the guiding tongues remains retained within the respective guiding recesses when the clamping parts move with respect to one another. In this way, in each position of the clamping parts between a completely open position and a completely closed position, at least part of the guiding tongues is engaged in the respective guiding recesses.
  • the clamping parts are interconnected by means of at least one intermediate resilient element.
  • Such intermediate resilient element is less prone to wear than a hinged joint.
  • the at least one intermediate resilient element of such embodiment preferably is made as an intermediate resilient strip.
  • the clamping parts and the intermediate resilient element of such embodiment are preferably made of the same material.
  • the first clamping part, the main body and the intermediate resilient element of such embodiment are preferably made of one piece.
  • the object of the intention is also achieved by providing a method for manufacturing a gripper for a gripper weaving machine, for example an Axminster gripper weaving machine, comprising two interconnected clamping parts movable with respect to one another for clamping, the first clamping part comprising at least two guiding recesses and the second said clamping part comprising at least two corresponding guiding tongues protruding towards the first clamping part, the guiding recesses and guiding tongues being positioned such that the guiding recesses receive the guiding tongues for sliding movement therein when the clamping parts move with respect to one another, wherein a tongue body is provided with the two said guiding tongues, a main body is provided and the tongue body is fixed to the main body with a seam in order to form the second clamping part.
  • the tongue body is fixed to the main body by means of brazing.
  • the tongue body is fixed to the main body by means of laser welding.
  • the main body comprises a guiding recess an the tongue body comprises a base, from which the guiding tongues extend and the tongue body is placed with its base in the recess of the main body before fixing the tongue body to the main body.
  • the illustrated gripper (1) for a gripper weaving machine for example an Axminster gripper weaving machine, comprises two interconnected clamping parts (2, 3) which are movable with respect to one another between an open position and a closed position, wherein a pile yarn can be clamped between the clamping parts (2, 3) and can be released.
  • the clamping parts (2, 3) are interconnected by means of an intermediate resilient strip (11).
  • the first clamping part (2) of the gripper (1) is provided with two guiding recesses (4, 5), which are staggered and positioned at opposite faces of the clamping part (2).
  • the second clamping part (3) of the gripper (1) comprises a main body (8) and a tongue body (9), which are interconnected by brazing with a seam (10).
  • the tongue body (9) could be joined with the main body (8) by means of laser welding.
  • the tongue body (9) comprises a base (14) and two guiding tongues (6, 7), which are staggered and extend on lateral sides from the base (14).
  • the main body (8) is provided with a recess (13) in which the base (14) of the tongue body (9) is placed.
  • the guiding recesses (4, 5) in the first clamping part (2) and the guiding tongues (6, 7) in the second clamping part (3), are positioned such that the guiding recesses (4, 5) receive the guiding tongues (6, 7) for sliding movement therein. In this way, these guiding recesses (4, 5) and guiding tongues (6, 7) assure a correct alignment of the gripper parts (2, 3).
  • the lengths of the guiding tongues (6, 7) and guiding recesses (4, 5) are chosen such that in each position of the clamping parts (2, 3), at least part of the guiding tongues (6, 7) is retained within the respective guiding recesses (4, 5).
  • the clamping parts (2, 3) are provided with a toothing (12), such that the yarn will not get loose from the clamping parts (2, 3) when the gripper (1) takes along the pile yarn.
  • the guiding tongues (6, 7) and guiding recesses (4, 5) are positioned near the toothing (12).
  • the clamping parts (2, 3) and the resilient element (11) are made of the same material.
  • the first clamping part (2), the main body (8) and the intermediate resilient strip (11) are made of one piece.
  • the intermediate strip (11) is made small enough to assure that it is elastic, such that the clamping parts (2, 3) can move with respect to each other due to the elastic properties of this intermediate strip (11).

Landscapes

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

Claims (13)

  1. Griffe (1) pour une machine à tisser à griffes, comprenant deux parties de serrage interconnectées (2, 3) déplaçables l'une par rapport à l'autre pour serrer, ladite première partie de serrage (2) comprenant au moins deux évidements de guidage (4, 5) et ladite seconde partie de serrage (3) comprenant au moins deux languettes de guidage correspondantes (6, 7) en saillie en direction de la première partie de serrage (2), les évidements de guidage (4, 5) et les languettes de guidage (6, 7) étant positionnés de telle sorte que les évidements de guidage (4, 5) reçoivent les languettes de guidage (6, 7) pour exécuter un déplacement glissant dans ceux-ci lorsque les parties de serrage (2, 3) se déplacent l'une par rapport à l'autre, caractérisée en ce que la seconde partie de serrage (3) comprend un corps de languette (9) comprenant lesdites languettes de guidage (6, 7) et un corps principal (8) auquel le corps de languette (9) est fixé par l'intermédiaire d'une soudure (10).
  2. Griffe (1) selon la revendication 1, caractérisée en ce que le corps de languette (9) comprend une base (14), à partir de laquelle les languettes de guidage (6, 7) s'étendent, et le corps principal (8) est pourvu d'un évidement (13), dans lequel la base (14) du corps de languette (9) est placée.
  3. Griffe (1) selon la revendication 1, caractérisée en ce que lesdites deux languettes de guidage (6, 7) s'étendent latéralement sur les faces opposées du corps de languette (9).
  4. Griffe (1) selon la revendication 3, caractérisée en ce que lesdites deux languettes de guidage (6, 7) sont échelonnées.
  5. Griffe (1) selon la revendication 1, caractérisée en ce que lesdites deux languettes de guidage (6, 7) sont positionnées à proximité des extrémités des parties de serrage (2, 3).
  6. Griffe (1) selon la revendication 1, caractérisée en ce que les longueurs des languettes de guidage (6, 7) et des évidements de guidage (4, 5) sont choisies de telle sorte qu'une partie des languettes de guidage (6, 7) reste retenue à l'intérieur des évidements de guidage respectifs (4, 5) lorsque les parties de serrage (2, 3) se déplacent l'une par rapport à l'autre.
  7. Griffe (1) selon l'une quelconque des revendications précédentes, caractérisée en ce que les parties de serrage (2, 3) sont interconnectées au moyen d'au moins un élément élastique intermédiaire (11).
  8. Griffe (1) selon la revendication 7, caractérisée en ce que les parties de serrage (2, 3) et l'élément élastique intermédiaire (11) sont constitués du même matériau.
  9. Griffe (1) selon la revendication 7, caractérisée en ce que la première partie de serrage (2), le corps principal (8) et l'élément élastique intermédiaire (11) sont constitués d'une seule pièce.
  10. Procédé de fabrication d'une griffe (1) pour une machine à tisser à griffes du type Axminster, comprenant deux parties de serrage interconnectées (2, 3) déplaçables l'une par rapport à l'autre pour serrer et relâcher un fil de poil, la première partie de serrage (2) comprenant au moins deux évidements de guidage (4, 5) et ladite seconde partie de serrage (3) comprenant au moins deux languettes de guidage correspondantes (6, 7) en saillie en direction de la première partie de serrage (2), les évidements de guidage (4, 5) et les languettes de guidage (6, 7) étant positionnés de telle sorte que les évidements de guidage (4, 5) reçoivent les languettes de guidage (6, 7) pour exécuter un déplacement glissant dans ceux-ci lorsque les parties de serrage (2, 3) se déplacent l'une par rapport à l'autre, caractérisé en ce qu'un corps de languette (9) est pourvu desdites deux languettes de guidage (6, 7), un corps principal (8) est prévu et le corps de languette (9) est fixé au corps principal (8) par l'intermédiaire d'une soudure (10) afin de former la seconde partie de serrage (3).
  11. Procédé selon la revendication 10, caractérisé en ce que le corps de languette (9) est fixé au corps principal (8) au moyen d'un brasage.
  12. Procédé selon la revendication 10, caractérisé en ce que le corps de languette (9) est fixé au corps principal (8) au moyen d'un soudage au laser.
  13. Procédé selon l'une quelconque des revendications 10 à 12, caractérisé en ce que le corps principal (8) comprend un évidement (13), et le corps de languette (9) comprend une base (14), à partir de laquelle les languettes de guidage (6, 7) s'étendent, et en ce que le corps de languette (9) est placé avec sa base (14) dans l'évidement (13) du corps principal (8) avant la fixation du corps de languette (9) au corps principal (8).
EP17166009.5A 2016-04-13 2017-04-11 Pince pour un métier à tisser à pince et procédé de fabrication d'une telle pince Active EP3231910B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17166009T PL3231910T3 (pl) 2016-04-13 2017-04-11 Chwytak do chwytakowej maszyny tkackiej oraz sposób wytwarzania takiego chwytaka

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16165005 2016-04-13

Publications (3)

Publication Number Publication Date
EP3231910A2 EP3231910A2 (fr) 2017-10-18
EP3231910A3 EP3231910A3 (fr) 2017-10-25
EP3231910B1 true EP3231910B1 (fr) 2019-01-30

Family

ID=55745689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17166009.5A Active EP3231910B1 (fr) 2016-04-13 2017-04-11 Pince pour un métier à tisser à pince et procédé de fabrication d'une telle pince

Country Status (4)

Country Link
EP (1) EP3231910B1 (fr)
CN (2) CN107287743B (fr)
PL (1) PL3231910T3 (fr)
TR (1) TR201903638T4 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107287743B (zh) * 2016-04-13 2020-11-03 米歇尔.范德威尔公司 用于片梭织机的夹纱器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1060279A (en) * 1964-10-09 1967-03-01 Frederick Greenwood & Sons Ltd Yarn grippers for axminster and similar looms
GB1344979A (en) * 1970-02-24 1974-01-23 Appleby Edmonds Ltd Yarn grippers
DE2164222A1 (de) * 1971-12-23 1973-06-28 Brintons Ltd Garngreifer zum einsetzen von buescheln oder tuffs bei der teppichherstellung und verfahren zu deren herstellung
BE1014840A4 (nl) * 2002-05-21 2004-05-04 Wiele Michel Van De Nv Grijper voor een axminstergrijperweefmachine.
GB0503792D0 (en) * 2005-02-24 2005-03-30 Griffith Textile Mach Ltd A gripper
ES2376137T3 (es) * 2008-04-01 2012-03-09 Groz-Beckert Kg Pinzas para telar axminster.
CN107287743B (zh) * 2016-04-13 2020-11-03 米歇尔.范德威尔公司 用于片梭织机的夹纱器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3231910A2 (fr) 2017-10-18
CN107287743B (zh) 2020-11-03
CN107287743A (zh) 2017-10-24
TR201903638T4 (tr) 2019-04-22
EP3231910A3 (fr) 2017-10-25
CN205636011U (zh) 2016-10-12
PL3231910T3 (pl) 2019-06-28

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