EP3775343B1 - Système de métier à tisser pour tirer des fils de chaîne de liaison d'une foule dans un espace entre les tissus extérieurs supérieur et inférieur d'un tissu de distance - Google Patents

Système de métier à tisser pour tirer des fils de chaîne de liaison d'une foule dans un espace entre les tissus extérieurs supérieur et inférieur d'un tissu de distance Download PDF

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Publication number
EP3775343B1
EP3775343B1 EP19720028.0A EP19720028A EP3775343B1 EP 3775343 B1 EP3775343 B1 EP 3775343B1 EP 19720028 A EP19720028 A EP 19720028A EP 3775343 B1 EP3775343 B1 EP 3775343B1
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EP
European Patent Office
Prior art keywords
manipulating bar
permanent magnets
manipulating
bar
shed
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
EP19720028.0A
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German (de)
English (en)
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EP3775343A1 (fr
Inventor
Petr Karel
Martin Beran
Josef Zak
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.)
Vuts AS
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Vuts AS
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Publication of EP3775343A1 publication Critical patent/EP3775343A1/fr
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/16—Double-plush looms, i.e. for weaving two pile fabrics face-to-face
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D11/00—Double or multi-ply fabrics not otherwise provided for
    • D03D11/02—Fabrics formed with pockets, tubes, loops, folds, tucks or flaps
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D11/00—Double or multi-ply fabrics not otherwise provided for
    • 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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics

Definitions

  • the invention relates to a weaving machine system for pulling binding warp yarns out of a shed into a gap between upper and lower outer fabrics of a distance fabric during formation of loops of the binding yarns by means of a manipulating bar.
  • Distance fabrics contain two outer fabrics and a plurality of binding yarns connected to the outer fabrics and arranged between them.
  • US 8 015 999 B2 describes a method for forming this type of a distant fabric in which the distance fabric is formed on a weaving machine from two systems of warp yarns, whereby the system of basic warp yarns only serves to weave the two outer fabrics and the system of binding warp yarns serves to weave the two outer fabrics and, during the interruption of weaving, it is used to create the binding yarns by pulling the binding warp yarns out of a shed into a gap between the outer fabrics by means of a pulling means of the binding warp yarns.
  • Pulling the binding warp yarns out of the shed is carried out manually during the interruption of weaving, when, after crossing the binding warp yarns, one operator inserts a pulling bar into the shed from one side. The pulling bar is then gripped by a second operator and both operators pull the pulling bar towards themselves, while a third operator releases the binding warp yarns.
  • the aim of the invention is to provide a weaving machine system for pulling binding warp yarns out of a shed into a gap between the upper outer fabric and the lower outer fabric of a distance fabric during formation of loops of binding yarns in this gap.
  • a weaving machine system whose principle consists in that, a manipulating bar is coupleable to at least two electromagnets arranged reversibly displaceably above the upper outer fabric in the direction of the distance fabric take-up motion and back, in that the manipulating bar is in places in which it is coupleable to electromagnets provided with permanent magnets arranged in a Halbach array, whereby the electromagnets are provided at the bottom with non-magnetic material sliding parts in which the pole pieces of the respective electromagnet terminate.
  • a lightweight, high stiffness material is suitable for its production, such as a carbon composite or titanium or hard anodized duralumin.
  • the bar comprises, in its central part, a support core of a lightweight, high stiffness material, to which end pieces are attached at the edges.
  • the core can be made of a carbon composite or titanium or hard anodized duralumin or another suitable material.
  • At least a part of the manipulating bar is overlapped with cover plates of a high strength material selected from the group consisting of stainless steels.
  • the entire manipulating bar is overlapped with a high strength material.
  • the permanent magnets arranged in Halbach arrays are situated at the ends of the manipulating bar, preferably in the end pieces of the manipulating bar.
  • the Halbach arrays of permanent magnets are formed by rows of at least five permanent magnets which are arranged perpendicular to the length of the manipulating bar and the Halbach arrays are arranged in the shed with their strong side upward against the corresponding electromagnets.
  • the pole pieces of the electromagnets are terminated with working parts which extend into the sliding part of the electromagnet in its front part.
  • the above-mentioned working parts of the pole pieces of the electromagnets are arranged in a direction perpendicular to the rows of permanent magnets arranged in the Halbach arrays.
  • a manipulating bar loss sensor is arranged in each electromagnet.
  • FIG. 1 is a schematic diagram of the weaving machine mechanism with the manipulating bar in the shed
  • Fig. 2 is a schematic diagram of the weaving machine with the manipulating bar in the gap between the outer fabrics
  • Fig. 3 is a view of the manipulating bar without cover plates
  • Fig. 4 is a view of the manipulating bar overlapped with cover plates
  • Fig. 5 shows an arrangement of the permanent magnets in the Halbach array
  • Fig. 6 shows a cross-sectional view of an electromagnet
  • Fig. 7 is a view of an electromagnet without a winding
  • Fig. 8 is view of an electromagnet without a right-hand side cover.
  • the weaving machine system for pulling binding warp yarns 2 out of a shed P into a gap T0 between an upper outer fabric T1 and a lower outer fabric T2 of a distance fabric T during formation of loops of binding yarns by means of a manipulating bar 4 coupleable to at least two electromagnets 5 arranged above the upper outer fabric T1 reversibly displaceably in the direction of the take-up motion of the distance fabric T and back will be briefly described with reference to schematic diagrams of the weaving machine mechanisms showing the manipulating bar 4 inserted into the shed P ( Fig. 1 ) and captured by the electromagnets 5 and in the next step during the pulling of the binding warp yarns 2 into the gap T0 between the outer fabrics T1 and T2 ( Fig. 2 ).
  • the number of the electromagnets 5 may be even higher, for example, three or four, two of them being disposed at the edges and the remaining electromagnet/electromagnets in the central part, whereby the manipulating bar 4 is at the respective points provided with permanent magnets 44 arranged in Halbach arrays 440.
  • the distance fabric T is formed from two warp systems, whereby the system of ground warp yarns 1 only serves to weave the two outer fabrics T1, T2 and the system of the binding warp yarns 2 serves to weave the two outer fabrics T1, T2 and, during the interruption of the weaving process, to form loops of binding yarns 200 by pulling the binding warp yarns 2 out of the shed P into the gap T0 between the outer fabrics T1, T2.
  • Both warp yarns systems 1, 2 pass in a known manner through heald shafts L and through a reed 31 of a beating-up mechanism 3.
  • Fig. 1 shows the manipulating bar 4 in the shed P held by the electromagnets 5 after crossing the binding warp yarns 2 before the insertion of the bar 4 into the shed. In doing so, a part of the upper outer fabric T1 is clamped between the electromagnet 5 and the bar 4.
  • the manipulating bar 4, still held by the electromagnets 5, is moved in the direction of the take-up motion of the distance fabric T by a specified distance and, at the same time, the manipulating bar 4 pulls the loops of the binding warp yarns 2 into the gap between the outer fabrics T1, T2, whereby the binding warp yarns 2 are synchronously released from the respective warp beam.
  • the manipulating bar 4 comprises a supporting core 41 made of a lightweight, high stiffness material, in an exemplary embodiment made of a carbon composite, which guarantees sufficient stiffness even at lengths greater than 1,500 mm.
  • the supporting core 41 may also be made of another suitable material, such as titanium or hard anodized duralumin.
  • end pieces 42, 43 are attached to the supporting core 41, in which permanent magnets 44 are mounted, arranged in the Halbach arrays 440.
  • the end pieces 42, 43 are different from each other - a manipulating end piece 42 is facing on the side an unillustrated device of inserting the manipulating bar 4 into the shed P and pulling it out of the shed P, and a sliding end piece 43 is on the opposite side.
  • Fixing holes 45 are formed in the manipulating bar 4 to provide for precise positioning of the bar 4 when manipulating it during the interruption of the weaving process, especially after returning the bar to the shed prior to pulling it out of the shed P and after the bar is reinserted into the shed P before being held by the electromagnets.
  • the Halbach arrays 440 of permanent magnets 44 are formed by rows of at least five cube-shaped magnets, as shown in the illustrated embodiment, whereby the rows are oriented in a direction perpendicular to the length of the manipulating bar 4 and the Halbach arrays are arranged with their strong side upward against the electromagnets 5.
  • nine Halbach arrays 440 are used, each consisting of five permanent magnets 44.
  • the permanent magnets 44 in the individual Halbach arrays are glued to each other and the individual rows of the Halbach arrays are glued into holes formed in the respective end piece 42, 43 of the manipulating bar 4.
  • the manipulating end piece 42 of the manipulating bar 4 comprises a recess 421 at its free end 420 for gripping an insertion mechanism by manipulating tweezers.
  • the front edge 4211 of the recess 421 is used as a sensing edge for a manipulating bar 4 loss sensor 56 disposed on the respective electromagnet 5.
  • the sliding end piece 43 is rounded at the edges to reduce the risk of yarn getting caught and a hole 431 is formed in the sliding end piece 43 at its free end 430, the front edge 4311 of the hole 431 is used as a sensing edge for the manipulating bar 4 loss sensor 56 disposed on the respective electromagnet 5.
  • the manipulating bar 4 can be made of one piece, wherein the permanent magnets 44 are mounted at the ends of the bar 4.
  • the end pieces at the free ends of the manipulating bar 4 are identical as or similar to the free ends 420, 430 of the end pieces 42, 43.
  • the manipulating bar 4 at least on a part of its length in contact with the binding warp yarns 2, is overlapped with cover plates 40 from high strength material, such as high strength stainless steel.
  • cover plates 40 from high strength material, such as high strength stainless steel.
  • the manipulating bar 4 is overlapped along its entire length as far as to the free ends 420, 430.
  • a smooth, strong and durable coating is formed on the manipulating bar 4 surface which comes into contact with the yarns.
  • the electromagnets 5 are formed by a core 51, around which a winding 52 is arranged, constituting a coil.
  • a lower pole piece 53 and an upper pole piece 54 are disposed on the core 51.
  • the lower pole piece 53 is embedded in a non-magnetic sliding part 55, which is provided with a smooth finish allowing the sliding part 55 to slide smoothly over the upper outer fabric T1 and the warp yarns 1.
  • the lower pole piece 53 is terminated by a working part 531.
  • Attached to the upper pole piece 54 is a front part 540 of the upper pole piece 54 terminated in the sliding part 55 by a working part 541 which is arranged in the vicinity of the rear working part 531 of the lower pole piece 53 and is parallel to it, whereby the shape of the sliding part 55 and the working parts 531 and 541 of the pole pieces 53, 54 is adapted to achieve the shortest possible loop of the binding warp yarns 2 when they are pulled out of the shed P and at the same time to develop the maximum working force on the manipulating bar 4.
  • a manipulating bar 4 loss sensor 56 in both directions of its motion, which is connected to means of a control system of the weaving machine.
  • the senor 56 is formed by an inductive sensor with optical signalling and a sensor 56 of the right electromagnet 5 monitors the position of the front edge 4211 of the recess 421 for the manipulating tweezers in the free end 420 of the manipulating end piece 42 of the manipulating bar 4 and the sensor of the left electromagnet 5 monitors the position of the front edge 4311 of the hole 431 in the free end 430 of the sliding end piece 43 of the manipulating bar 4.
  • the electromagnets 5 are provided with covers 57 from the rear and lateral sides.
  • the dimensions and spacing of the working parts 531 of the lower pole piece 53 and the working parts 541 of the upper pole piece 54 are linked to the dimensions of the permanent magnets 44 in the manipulating bar 4 arranged in the Halbach arrays 440.
  • the width of the working parts 531, 541 equals the length of the side of the permanent magnet 44 and the distance between the working parts 531 and 541 also equals the length of the side of the permanent magnet 44.
  • the length of the working parts 531 and 541 of the pole pieces 53, 54 is equal to or less than the length of the Halbach arrays 440, i.e. the adjacent rows of permanent magnets 44 arranged in the Halbach arrays.
  • the number of permanent magnets 5 may be even higher, for example, three or four, two being arranged at the edges and the remaining in the central part, whereby the manipulating bar 4 is at the respective points provided with permanent magnets 44 arranged in Halbach arrays 440.
  • the number of permanent magnets 44 in the Halbach array is given by 4n+1, therefore the minimum number is five.
  • the invention is applicable in weaving machines manufacturing distance fabrics, wherein a system for pulling binding warp yarns out of a shed into a gap between the upper outer fabric and the lower outer fabric is formed duration formation of loops of binding yarns.

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

Claims (11)

  1. Système de machine à tisser pour l'extraction des interfils de chaîne (2) de la foule vers l'espace (T0) entre le tissu externe supérieur (T1) et le tissu externe inférieur (T2) du tissu de séparation lors de la formation des boucles d'interfils à l'aide d'une barre de manutention (4), caractérisé en ce que la barre de manutention est couplée à au moins deux électroaimants (5) disposés au-dessus du tissu externe supérieur (T1) de manière réglable et réversible dans le sens du tirage du tissu de séparation (T) et en arrière, tandis que la barre de manutention (4) est pourvue d'aimants permanents (44) disposés en réseaux de Halbach (440) aux points où elle peut être couplée avec les électroaimants (5), les électroaimants (5) étant pourvus, dans leur partie inférieure, d'un patin (55) en matériau non magnétique dans lequel se terminent les extensionsextensions polaires (53 et 54) de l'électroaimant respectif (5).
  2. Système selon la revendication 1, caractérisé en ce que la barre de manutention (4) est faite de matériau léger, à haute rigidité, choisi dans le groupe du composite de carbone ou de titane ou de duralumin anodisé.
  3. Système selon la revendication 1, caractérisé en ce que la barre de manutention (4) comprend un noyau porteur (41) fait d'un matériau léger à haute rigidité auquel les manchons (42, 43) sont fixés sur les bords, tandis que le noyau porteur (41) est fait d'un composite de carbone ou de titane ou de duralumin anodisé.
  4. Système selon l'une des revendications précédentes, caractérisé en ce qu'au moins une partie de la barre de manutention (4) est revêtue de tôles de recouvrement (40) faites d'un matériau à haute résistance choisi dans le groupe des aciers inoxydables.
  5. Système selon la revendication 4, caractérisé en ce que la barre de manutention (4) est revêtue dans sa totalité par le matériau à haute résistance.
  6. Système selon l'une des revendications précédentes, caractérisé en ce que les aimants permanents (44) disposés en réseaux de Halbach (440) sont disposés aux extrémités de la barre de manutention (4).
  7. Système selon la revendication 6, caractérisé en ce que les aimants permanents (44) sont disposés dans les manchons (42, 43) de la barre de manutention (4).
  8. Système selon l'une des revendications précédentes, caractérisé en ce que les réseaux de Halbach (440) des aimants permanents (44) sont formés par des rangées d'au moins cinq aimants permanents (44), les rangées étant disposées perpendiculairement à la longueur de la barre de manutention (4) et les réseaux de Halbach (440) disposés avec leur côté épais tourné vers le haut en direction des électroaimants respectifs dans la foule.
  9. Système selon l'une des revendications précédentes, caractérisé en ce que les extensions polaires (53, 54) de l'électroaimant (5) sont terminées par des parties actives (531, 541) qui s'étendent dans la partie frontale du patin (55).
  10. Système selon la revendication 9, caractérisé en ce que les parties actives (531, 541) des extensions polaires (53, 54) sont disposées perpendiculairement aux rangées d'aimants permanents (44) disposés en réseaux de Halbach (440).
  11. Système selon l'une des revendications précédentes, caractérisé en ce qu'un capteur (56) de perte de la barre de manutention (4) est disposé dans l'électroaimant (5).
EP19720028.0A 2018-04-06 2019-04-04 Système de métier à tisser pour tirer des fils de chaîne de liaison d'une foule dans un espace entre les tissus extérieurs supérieur et inférieur d'un tissu de distance Active EP3775343B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2018-170A CZ2018170A3 (cs) 2018-04-06 2018-04-06 Systém tkacího stroje pro vytahování provazovacích osnovních nití z prošlupu do mezery mezi horní a dolní vnější tkaninou distanční tkaniny
PCT/CZ2019/050016 WO2019192632A1 (fr) 2018-04-06 2019-04-04 Système de métier à tisser pour tirer des fils de chaîne de liaison d'une foule dans un espace entre les tissus extérieurs supérieur et inférieur d'un tissu de distance

Publications (2)

Publication Number Publication Date
EP3775343A1 EP3775343A1 (fr) 2021-02-17
EP3775343B1 true EP3775343B1 (fr) 2023-07-19

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EP19720028.0A Active EP3775343B1 (fr) 2018-04-06 2019-04-04 Système de métier à tisser pour tirer des fils de chaîne de liaison d'une foule dans un espace entre les tissus extérieurs supérieur et inférieur d'un tissu de distance

Country Status (5)

Country Link
EP (1) EP3775343B1 (fr)
CN (1) CN112105768B (fr)
CZ (1) CZ2018170A3 (fr)
TW (1) TWI732201B (fr)
WO (1) WO2019192632A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08203729A (ja) * 1995-01-30 1996-08-09 Anritsu Corp 単安定型電磁石装置
DE102005022955A1 (de) * 2005-05-19 2006-11-23 Lindauer Dornier Gmbh Verfahren und Vorrichtung zum Halten eines nach einem Startvorgang einer Webmaschine, insbesondere Luftdüsenwebmaschine eingetragenen Schussfadens
CN101277080A (zh) * 2008-01-25 2008-10-01 谭建平 一种非接触式大间隙磁力驱动方法
FR2926821B1 (fr) * 2008-01-29 2010-04-02 Deschamps A & Fils Ets Structure tissee et panneau ou recipient comportant une telle structure
FR2926822B1 (fr) * 2008-01-29 2010-05-28 Deschamps A & Fils Ets Procede de tissage et metier a tisser pour la mise en oeuvre de ce procede
CN101425766A (zh) * 2008-08-05 2009-05-06 南京航空航天大学 非接触式磁力驱动装置
TWI364466B (en) * 2009-12-04 2012-05-21 Taiwan Textile Res Inst Weaving machines and three-dimensional woven fabrics
JP5521844B2 (ja) * 2010-07-15 2014-06-18 富士電機機器制御株式会社 電磁石装置および電磁リレー
CN202124720U (zh) * 2011-06-26 2012-01-25 河北科技大学 一种纬接结机织间隔织物
CN102684400A (zh) * 2012-05-31 2012-09-19 天津工业大学 Halbach阵列永磁高效节能纺织电机
CN204442203U (zh) * 2015-03-10 2015-07-01 曾斌 一种磁力驱动装置
CN106012237A (zh) * 2016-08-14 2016-10-12 谢强 3d间隔机织物

Also Published As

Publication number Publication date
EP3775343A1 (fr) 2021-02-17
CZ307841B6 (cs) 2019-06-12
TWI732201B (zh) 2021-07-01
CN112105768B (zh) 2022-07-08
CZ2018170A3 (cs) 2019-06-12
TW201943906A (zh) 2019-11-16
CN112105768A (zh) 2020-12-18
WO2019192632A1 (fr) 2019-10-10

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