EP1876273A1 - Greifer, sein Herstellungsverfahren, Vorrichtung zum Eintragen von Schussfäden, die mit einem solchen Greifer ausgestattet ist, und Webmaschine mit einer derartigen Vorrichtung - Google Patents

Greifer, sein Herstellungsverfahren, Vorrichtung zum Eintragen von Schussfäden, die mit einem solchen Greifer ausgestattet ist, und Webmaschine mit einer derartigen Vorrichtung Download PDF

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Publication number
EP1876273A1
EP1876273A1 EP07356091A EP07356091A EP1876273A1 EP 1876273 A1 EP1876273 A1 EP 1876273A1 EP 07356091 A EP07356091 A EP 07356091A EP 07356091 A EP07356091 A EP 07356091A EP 1876273 A1 EP1876273 A1 EP 1876273A1
Authority
EP
European Patent Office
Prior art keywords
lance
reinforcement
claw
housing
flexible part
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
EP07356091A
Other languages
English (en)
French (fr)
Other versions
EP1876273B1 (de
Inventor
Martin Burkert
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.)
Schoenherr Textilmaschinenbau GmbH
SCHONHERR TEXTILMASCHINENBAU GmbH
Original Assignee
Schoenherr Textilmaschinenbau GmbH
SCHONHERR TEXTILMASCHINENBAU GmbH
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 Schoenherr Textilmaschinenbau GmbH, SCHONHERR TEXTILMASCHINENBAU GmbH filed Critical Schoenherr Textilmaschinenbau GmbH
Publication of EP1876273A1 publication Critical patent/EP1876273A1/de
Application granted granted Critical
Publication of EP1876273B1 publication Critical patent/EP1876273B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/275—Drive mechanisms
    • D03D47/276—Details or arrangement of sprocket wheels
    • 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms

Definitions

  • the present invention relates to a lance for a loom and to a weft insertion device.
  • the invention also relates to a loom equipped with such a lance or such an insertion device, and to a method of manufacturing such a lance.
  • the drive wheels of the lances each have an axis of rotation substantially parallel to the axis of the chain.
  • the flexible portions or ribbon of these lances thus have openings of engrainement disposed on the upper and lower faces of the ribbons which are substantially horizontal.
  • the method of attachment of the claws on the ribbons of the known lances is such that the claws are not oriented correctly to grasp the frames before insertion into the crowd or to allow to effectively adjust the claws in an exchange position of the weft son between two lances.
  • weft threads used in certain applications are very tight, to the point that the connection between the flexible part of a lance and the associated claw undergoes significant stresses that can lead to the rupture of spear.
  • the invention more particularly intends to provide by proposing a new lance in which the connection between the claw and one end of the flexible part is particularly robust, while allowing a correct orientation of the claw by ratio to the weft and the crowd, while the drive wheel of the lance can have an axis of rotation not parallel to the axis of the chain.
  • the invention relates to a weaving weft insertion lance for a loom, said lance comprising a flexible portion and a hooking claw of a weft thread fixed on one end of the flexible part.
  • This lance is characterized in that the aforementioned end of the flexible portion comprises a longitudinal slot in which a reinforcement is immobilized, this reinforcement being provided with at least one housing for receiving a mounting tab of the claw, and what the lance comprises means for immobilizing the or each leg of the claw in the corresponding housing.
  • the claw of a lance is the part of this lance which allows the attachment of a weft thread.
  • a "claw” may also be called “head” or “clamp” of the lance.
  • the reinforcement and the immobilization means allow effective attachment of the claw on the end of the flexible portion of the lance.
  • the reinforcement also makes it possible to ensure the orientation of the claw relative to the direction of advance of the lance.
  • the invention also relates to a device for inserting weft yarns for a loom which comprises at least one lance as previously described and a comb equipped with means, distributed along its length, for guiding the flexible part of the loom. spear.
  • Such a weft insertion device allows effective guidance of the lance over the length of its stroke.
  • the guiding means comprise a series of tabs each provided with a through hole of the flexible part, this orifice being substantially complementary to the cross section of the end of the flexible portion of the lance equipped with the reinforcement.
  • the invention also relates to a loom equipped with a lance or a weft insertion device as mentioned above.
  • steps b) and c), on the one hand, and d), on the other hand, can be reversed with respect to that indicated above.
  • the loom M shown in FIGS. 1 and 2 is intended for the formation of two plies N 1 and N 2 of fabrics, for example two belts T 1 and T 2 woven simultaneously and separated from each other by a knife 1 cut.
  • -wires carried by a carriage 2 and disposed downstream of two striking points P 1 , P 2 to which converge respectively two crowds F 1 , F 2 defined by the warp threads 4 of the loom whose vertical movement is controlled by healds 3 actuated by a Jacquard harness and by warp son 4 'whose vertical movement is controlled by smooth mounted on smooth frames 3', themselves driven by a dobby or a cam mechanism not shown.
  • the weft threads 5 1 and 5 2 intended to constitute, with the corresponding warp threads, the plies N 1 and N 2 are inserted into the crowds F 1 and F 2 by means of two lances 11 and 12 each comprising a head or claw 111, respectively 121, on which can be hung a weft thread 1 or 5 2 , and a flexible strip 112, respectively 122, for driving the corresponding claw in the direction of two axes Y 1 , respectively Y 2 , parallel to each other and perpendicular to the son 4 and 4 'and the plane of Figure 1.
  • An assembly 13, forming a comb and movable pivotally about an axis Y 3 parallel to the axes Y 1 and Y 2 comprises a leaf 131 and a comb 132 consisting of a row of teeth 132a mounted on the leaf 131 and driven by it rotates about the Y axis 3 .
  • the teeth 132a can thus be brought into abutment against the points P 1 and P 2 when the leaf 131 has been pivoted about the axis Y 3 , with respect to the position of FIG. 1, by means not shown and known in itself.
  • the assembly 13 is equipped with a series Si of lugs 133 distributed over substantially the entire length of the comb 132, that is to say, according to the width of the loom of the loom M, and integral with the comb 132.
  • the tabs 133 are mounted in groups of three consoles 134, each bracket being fixed on a metal section 135 which is itself fixed on the upper ends of the teeth 132a, that is to say say on the ends of these teeth furthest away from the Y axis 3 .
  • Each tab 133 is pierced with an orifice 133a comprising two extensions 133a 1 and 133a 2 of substantially complementary shapes of the upper and lower portions of the cross section of the strip 112, which makes it possible to obtain a guiding effect of the strip 112 which constitutes the flexible portion of the lance 11, according to the width of the upper, as the claw 111 progresses towards the side of the comb 132 opposite to that through which it enters the crowd.
  • each tab 136 is mounted on brackets 137 fixed to the leaf 131, each tab 136 having an orifice of which two extensions are complementary in shape to the upper and lower parts of the cross section of the ribbon 122. which effectively guides the 122, which is the flexible portion of the lance 12 engaged in the crowd F 2 , without interaction with the comb 132.
  • the strips 112 and 122 are each provided with openings 114, 124 respectively, intended to mesh with the teeth 211, respectively 221, of two toothed wheels 21, respectively 22, driven, by means not shown, about two axes A 21. and A 22 fixed relative to the frame 50 of the loom and inclined with respect to a median plane ⁇ 1 between the plies N 1 and N 2 of an angle ⁇ of the order of 75 °.
  • the axes A 21 and A 22 are merged, which is however not mandatory.
  • the front ends of the ribbons 112 and 122 are respectively marked 1121 and 1221, on which the claws 111 and 121 are mounted.
  • the ribbons 112 and 122 are flexible over most of their length which is provided with the openings 114 and 124, in order to to be able to wind on the wheels 21 and 22 without generating too much stress.
  • the tapes are made of a composite material.
  • the composite material is reinforced, without affecting its bulk, in order to increase the rigidity of these end portions of the strips 112 and 122.
  • the ends or end portions 1121 and 1221 do not have to deform since they do not come directly in contact with the wheels 21 and 22. These ends must, on the contrary, have a well-defined geometry allowing easy guidance by means of the tabs 133 and 136.
  • connection between the claw 111 and the ribbon 112 must be reliable and robust in order to respond to the stresses to which it is subjected.
  • the front end 1121 of the ribbon 112 is provided with a longitudinal slot 1122 which extends parallel to the longitudinal axis X 112 of the ribbon 112, this axis coinciding with the Y axis 1 for the portion of the strip 112 engaged in the tabs 133.
  • a reinforcement 113 of generally parallelepiped shape is provided to be engaged in the slot 1122.
  • the reinforcement 113 is provided with two slots 1131 and 1132 in the form of a slot extending each in a direction perpendicular to a longitudinal axis X 113 of the reinforcement 113, parallel to the greatest length of the reinforcement 113.
  • the reinforcement 113 is also provided with two holes 1133 and 1134 which connect two opposite faces 1135 and 1136 of the reinforcement 113 perpendicular to the face 1137 in which the housings 1131 and 1132 open.
  • 1124 and 1125 respectively denote the lateral faces of the ribbon 112 into which the openings 114 open.
  • the faces of the ribbon 112 perpendicular to the faces 1123 and 1124 are respectively noted 1126 and 1127.
  • the ribbon 112 is provided with two holes 1128 and 1129 which connect the faces 1126 and 1127 and which are respectively aligned with the holes 1133 and 1134 when the reinforcement 113 is in place in the slot 1122.
  • the bore 1128 comprises an upper portion 1128a and a lower portion 1128b. These portions 1128a and 1128b are respectively separated from the slot 1122 by flanges 1128c and 1128d each having a central opening.
  • Two screws 115 are provided to be inserted into holes 1128 and 1129 through portions 1128a and the like, while nuts 116 provided with threads 116a are received in portions 1128b.
  • the nuts 1116 are advantageously bonded in the portions 1128b, in which case they can be made in circular section rings. However, if the nuts are polygonal in section, as shown in Figure 5, they are advantageously immobilized in the portions 1128b by cooperation forms, in addition to a possible bonding.
  • the claw 111 is represented, essentially, by its silhouette in FIGS. 4 and 5. It is provided with two lugs 1111 and 1112 intended to be inserted respectively in the housings 1131 and 1132. Each lug 1111 and 1112 is pierced with an orifice 1113, respectively 1114, for passing one of the screws 115.
  • the lugs 1111 and 1112 are integral with the rest of the claw 111 which is obtained by forming a metal sheet.
  • the mounting of the claw 111 on the ribbon 112 is performed by first making the slot 1122 and inserting the reinforcement 113 in this slot.
  • the reinforcement is then immobilized in this slot by gluing.
  • the reinforcement 113 protrudes laterally by relative to the faces 1123 and 1124 of the ribbon.
  • the end 1121 then has a generally cross-shaped section.
  • the reinforcement 113 is immobilized in the slot 1122 by means of screws which pass through orifices formed in one of the branches of the end 1121 between which is defined the slot 1122. These screws are accessible from the face 1126. They pass through the reinforcement 113 and are tightened in threads formed in the branch forming the face 1127. These screws are part of the bulk of the end 1121.
  • the claw 111 is attached to this reinforcement by inserting its lugs 1111 and 1112 in the housings 1131 and 1132.
  • the holes and bores 1113, 1133 and 1128 are then respectively aligned on the one hand , 1114, 1134 and 1129, on the other hand.
  • the nuts 116 can be rotatably mounted in the portions 1128b, in which case they are immobilized during the tightening of the screws 115.
  • the ribbon 112 is advantageously made from fibers. Reinforcing fibers, such as carbon fibers, are provided at the end 1121.
  • the reinforcement 113 can be made from the same fibers as the ribbon 112 or, in a particularly advantageous aspect, exclusively from fibers of carbon, which gives it a good rigidity and a good lightness.
  • the fibers of the elements 112 and 113 are advantageously molded in a synthetic matrix. Bonding between the elements 112 and 113 is all the more effective as their constituent materials are close to, or even identical.
  • each orifice 133 a has generally a cross shape with, as previously explained, two extensions 133a 1 and 133a 2 of shapes substantially complementary to the top and bottom portions of the strip 112, in the vicinity of the faces 1126. and 1127.
  • Each housing 133a also comprises a lateral extension 133a 3 and a slot 133a 4 which allow the passage of the reinforcement 113.
  • each orifice 133a has a shape substantially complementary to the cross-section of the end 1121 equipped. reinforcement 113.
  • the claw 112 of the lance 12 is mounted on the end 1121 of the ribbon 122 by means of a reinforcement immobilized on this ribbon and comprising receiving receptacles for mounting tabs of the claw.
  • the orifices of the tabs 116 have forms substantially complementary to the cross section of the front end of the ribbon 122 equipped with this reinforcement.
  • the elements similar to those of the first embodiment bear identical references.
  • the lower portion of drilling 1133 of the reinforcement 113 is sufficiently wide so that the nut 116 bears directly against the lug 1111, the force E 1 being exerted directly on this lug by the nut 116 and on the reinforcement 113 through the flange 1128a by the head of the screw 115.
  • the deformations due to the tightening of the screw affect a very small area of the end 1121 and the reinforcement 113. They do not change the quality of the guide of the lance 11 by the legs 133.
  • the clamping force E 1 could be exerted by means of rivets in place of the screws 115.
  • the invention has been shown when used in a double-tablecloth loom. It is however applicable with simple tablecloths.
  • the claw or head of the lance is removable and can be replaced independently of the tape.
  • screws and tappings such as elements 115 and 116a or 116'a, are used, these elements are reusable.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP20070356091 2006-07-07 2007-07-06 Greifer, sein Herstellungsverfahren, Vorrichtung zum Eintragen von Schussfäden, die mit einem solchen Greifer ausgestattet ist, und Webmaschine mit einer derartigen Vorrichtung Expired - Fee Related EP1876273B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0606210A FR2903425B1 (fr) 2006-07-07 2006-07-07 Lance,son procede de fabrication,dispositif d'insertion de fils de trame comprenant une telle lance et metier a tisser comprenant un tel dispositif

Publications (2)

Publication Number Publication Date
EP1876273A1 true EP1876273A1 (de) 2008-01-09
EP1876273B1 EP1876273B1 (de) 2009-06-24

Family

ID=37488455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070356091 Expired - Fee Related EP1876273B1 (de) 2006-07-07 2007-07-06 Greifer, sein Herstellungsverfahren, Vorrichtung zum Eintragen von Schussfäden, die mit einem solchen Greifer ausgestattet ist, und Webmaschine mit einer derartigen Vorrichtung

Country Status (4)

Country Link
EP (1) EP1876273B1 (de)
CN (1) CN101100782B (de)
DE (1) DE602007001363D1 (de)
FR (1) FR2903425B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103668717A (zh) * 2013-12-04 2014-03-26 杭州利宝纺织机械有限公司 一种挠性剑杆织机
WO2017162375A1 (en) * 2016-03-25 2017-09-28 Picanol Gripper for a gripper weaving machine
CN108728990A (zh) * 2018-08-13 2018-11-02 李红旗 一种剑杆机构及单剑杆展宽碳纤维织布机

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912533B (zh) * 2012-10-31 2013-09-18 常熟市常纺纺织机械有限公司 剑杆织机的引纬机构
CN102912532B (zh) * 2012-10-31 2014-03-26 常熟市常纺纺织机械有限公司 用于编织双层织物的剑杆织机的引纬机构
CN103306016B (zh) * 2013-05-07 2014-05-14 常熟市常纺纺织机械有限公司 用于编织双层织物的剑杆织机的引纬机构
CN106987963B (zh) * 2017-04-10 2019-01-18 湖州现代纺织机械有限公司 一种双层带孔面料及其织造方法
CN106884254B (zh) * 2017-04-10 2018-07-03 湖州现代纺织机械有限公司 一种用于织取双层透气面料的织机结构
CN106868686B (zh) * 2017-04-10 2018-06-15 湖州现代纺织机械有限公司 一种用于织取双层透气面料的剑杆织机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642093A1 (fr) * 1989-01-20 1990-07-27 Nuovo Pignone Spa Systeme pour l'ancrage d'un support a pince sur le tapis transporteur d'un metier a tisser
EP0406926A1 (de) * 1989-07-06 1991-01-09 Picanol N.V. Greiferwebmaschine mit GreiferbandfÀ¼hrung
JPH06299440A (ja) * 1993-04-13 1994-10-25 Ishikawa Seisakusho Ltd レピア織機の緯糸搬送体と緯糸搬送体案内ガイド
EP0623694A1 (de) * 1993-05-05 1994-11-09 NUOVA VAMATEX S.p.A. Greiferband für Webmaschinen
US5413151A (en) * 1993-04-15 1995-05-09 Picanol N.V. Gripper loom rapier guide arrangement
WO2000026454A1 (de) * 1998-10-29 2000-05-11 Picanol N.V. Greiferband für einen greifer einer greiferwebmaschine und greiferwebmaschine
EP1013806A1 (de) * 1998-12-23 2000-06-28 SOMET SOCIETA' MECCANICA TESSILE S.p.A. Schussfadengreiferpaar für Webmaschinen

Family Cites Families (5)

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US4605045A (en) * 1985-09-13 1986-08-12 Wu Lien Shin Gripping apparatus for shuttleless looms
CN2066449U (zh) * 1990-04-26 1990-11-28 张松茂 新型织机用剑杆头
CN1026903C (zh) * 1990-11-12 1994-12-07 黄仁德 改进的高速无梭织布机携纬器
ES2289073T3 (es) * 2002-08-30 2008-02-01 Promatech S.P.A. Mejoras en las pinzas transportadoras de la trama para telares de tejeduria y en telares de tejeduria con medios de guia para ellas.
CN2670394Y (zh) * 2003-12-24 2005-01-12 翟凤珍 一种可更换剑杆带带头的剑杆带

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642093A1 (fr) * 1989-01-20 1990-07-27 Nuovo Pignone Spa Systeme pour l'ancrage d'un support a pince sur le tapis transporteur d'un metier a tisser
EP0406926A1 (de) * 1989-07-06 1991-01-09 Picanol N.V. Greiferwebmaschine mit GreiferbandfÀ¼hrung
JPH06299440A (ja) * 1993-04-13 1994-10-25 Ishikawa Seisakusho Ltd レピア織機の緯糸搬送体と緯糸搬送体案内ガイド
US5413151A (en) * 1993-04-15 1995-05-09 Picanol N.V. Gripper loom rapier guide arrangement
EP0623694A1 (de) * 1993-05-05 1994-11-09 NUOVA VAMATEX S.p.A. Greiferband für Webmaschinen
WO2000026454A1 (de) * 1998-10-29 2000-05-11 Picanol N.V. Greiferband für einen greifer einer greiferwebmaschine und greiferwebmaschine
EP1013806A1 (de) * 1998-12-23 2000-06-28 SOMET SOCIETA' MECCANICA TESSILE S.p.A. Schussfadengreiferpaar für Webmaschinen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103668717A (zh) * 2013-12-04 2014-03-26 杭州利宝纺织机械有限公司 一种挠性剑杆织机
WO2017162375A1 (en) * 2016-03-25 2017-09-28 Picanol Gripper for a gripper weaving machine
BE1023978B1 (nl) * 2016-03-25 2017-09-28 Picanol N.V. Grijper voor een grijperweefmachine
CN108884609A (zh) * 2016-03-25 2018-11-23 必佳乐公司 用于片梭织机的片梭
CN108884609B (zh) * 2016-03-25 2020-03-17 必佳乐公司 用于片梭织机的片梭
CN108728990A (zh) * 2018-08-13 2018-11-02 李红旗 一种剑杆机构及单剑杆展宽碳纤维织布机
CN108728990B (zh) * 2018-08-13 2024-02-27 李红旗 一种剑杆机构及单剑杆展宽碳纤维织布机

Also Published As

Publication number Publication date
CN101100782A (zh) 2008-01-09
FR2903425B1 (fr) 2008-08-29
CN101100782B (zh) 2011-04-27
FR2903425A1 (fr) 2008-01-11
DE602007001363D1 (de) 2009-08-06
EP1876273B1 (de) 2009-06-24

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