EP1008683B1 - Procédé pour compenser le changement de la longueur et de la tension de la chaíne et métier à tisser pour la mise en oeuvre du procédé - Google Patents

Procédé pour compenser le changement de la longueur et de la tension de la chaíne et métier à tisser pour la mise en oeuvre du procédé Download PDF

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Publication number
EP1008683B1
EP1008683B1 EP99121739A EP99121739A EP1008683B1 EP 1008683 B1 EP1008683 B1 EP 1008683B1 EP 99121739 A EP99121739 A EP 99121739A EP 99121739 A EP99121739 A EP 99121739A EP 1008683 B1 EP1008683 B1 EP 1008683B1
Authority
EP
European Patent Office
Prior art keywords
back rest
warp
module
rest roller
tension
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.)
Expired - Lifetime
Application number
EP99121739A
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German (de)
English (en)
Other versions
EP1008683A1 (fr
Inventor
Adnan Dr. Wahhoud
Josef Hehle
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.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier 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
Priority claimed from DE1998156308 external-priority patent/DE19856308B4/de
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP1008683A1 publication Critical patent/EP1008683A1/fr
Application granted granted Critical
Publication of EP1008683B1 publication Critical patent/EP1008683B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/12—Controlling warp tension by means other than let-off mechanisms
    • D03D49/14—Compensating for tension differences during shedding

Definitions

  • the invention relates to methods for compensating the change in elongation or tension in a warp and weaving machine to carry out the method according to the features the preamble of claims 1 and 6.
  • the weaving chain is subject to in the course of Different warp tension fluctuations that occur when the fabric is open Shed for the purpose of weft insertion and beating a maximum value and a minimum value for the so-called subject change.
  • This alternating load in the The warp leads to a relatively high warp thread stress, the cause of Warp thread breaks is.
  • the problem of load changes in the chain becomes even clearer.
  • the fabric edges are to have a 2/2 weave in order to produce a stable fabric edge, and the fabric itself should have a plain weave, i.e. a 1/1 weave
  • the relevant edge warp threads are between the change of subject, i.e. between the open subject and the Closed compartment, exposed to greater warp tension fluctuations than the other warp threads.
  • the aforementioned phenomena which disrupt the weaving process occur in particular in the relevant warp threads of the warp.
  • a weaving machine is known from DE 26 59 530 A1, in which the match tree is set up to carry out a certain translational movement in order to compensate for the tension variations in the warp threads guided over the match tree, which variations are caused by the successive change of subject.
  • an auxiliary guide for a number of edge warp threads is provided in the vicinity of at least one end of the match tree, which can carry out a translational movement independently of the match tree under the influence of an adjustable load acting thereon.
  • This auxiliary device can easily follow the successive change of subject, so that the tension fluctuations in the relevant warp threads can be considerably reduced. It is obvious that the tension compensation device assigned to the match tree and the auxiliary device assigned to the edge warp threads represent a not inconsiderable cost factor for the manufacturer of the weaving machine.
  • the match beam which is rotatably mounted in a weaving machine, is equipped with at least one first module in such a way that this is adjusted in rhythm with the change of subject about its longitudinal center axis and the module compensates for the lower warp thread tension.
  • the module of the match tree consists of at least one first component which can be arranged on the lateral surface and over the working width of the match tree and forms a cam. When changing the shed, the module is effective on the warp in order to bring about elongation or tension compensation, which is a weave that is uniform across the width of the weave.
  • the first cam-like module arranged on the match tree can be connected to the lateral surface of the match tree several times, for example via screw connections.
  • the first module has an arcuate recess with a radius r 1 , which corresponds to the diameter radius of the match tree, while the free outer surface of the module has a radius r 2 that differs from the radius r 1 .
  • the match tree is rotatably received on both sides with its bearing journals in a bearing in a manner known per se and, for the transmission of an oscillating movement resulting from the formation of tissue, is arranged in a rotationally fixed manner with at least one near a bearing journal of the match tree Lever arm connected.
  • Means act on the lever arm, which transmit the aforementioned oscillating movement from a drive means of the weaving machine to the match tree.
  • the match tree is positively controlled in this case. Forced control of the match is given in a manner known per se when the rotation of the match is derived from the main shaft of the weaving machine, or when the match is rotated independently of the main shaft drive, for example by means of an electromotive drive interacting with the match. In another case the match tree can be spring loaded.
  • the invention provides for second or third modules to connect with the match tree, via which modules the relevant warp threads are guided as a separate warp thread group.
  • a second or third module encompasses the same by pushing it onto the first module and is operatively connected to the first module in a rotationally fixed manner via its inner contour.
  • an uncontrolled oscillating movement is optionally provided for the positively controlled, oscillating movement about the longitudinal center axis of the modular match tree, the positively controlled movement always being dominant over the uncontrolled movement. If the match tree is not to be operated in a positively controlled manner when weaving a specific article, the force control is decoupled from the modular match tree in a simple manner. The match tree is then only under the action of at least one spring. On the other hand, if the match tree is to perform a positively controlled, oscillating movement, the match tree can also be spring-loaded, but the forced control is dominant over the spring load.
  • FIGS. 1 to 5 show the parts of a weaving machine that relate directly to the invention.
  • FIG. 1 shows a warp beam 1 wound with a plurality of warp thread groups 3a, 3b, 3c, which is rotatably supported in the weaving machine in the direction of rotation indicated by the arrow 8 about its longitudinal central axis 1a and a match beam 2 which is rotatably supported in the weaving machine about its longitudinal central axis 2a is and has modular structures, hereinafter referred to as modules 4,5,6.
  • the match tree 2 carries the modules 4, 5 and 6 over its working width L, best seen in FIG. 3.
  • modules 5 and 6 each lead a first warp thread group 3a or 3c in the direction of the heald frames, not shown, to form a stable fabric edge, the fabric edge having, for example, a 2/2 weave, while a second warp thread group 3b extends over the outer surface 2b of the match tree 2 is guided in the direction of the heald frames, not shown.
  • the warp threads of the first warp thread group 3a and 3c are now guided with a much larger wrap angle via the modules 5 and 6 in the direction of the heald frames and are accordingly pre-tensioned, i.e. still have a sufficiently high warp tension when changing the shed, the warp tension in the warp threads changes when the shed is changed the second warp thread group 3b considerably.
  • the second warp thread group 3b experiences a compensation of the warp tension synchronously by the module 4 of the match tree 2.
  • the match tree 2 is connected in a manner known per se via a motion transmission mechanism 9 to an eccentric 10 arranged on the main shaft 7. With each change of subject, the desired warp thread tension in the warp thread group 3b is thus largely maintained via the module 4.
  • the motion transmission mechanism 9 consists of a first lever arm 9a connected in a rotationally fixed manner to the match tree 2, a pivotably mounted double lever 9b, the first lever arm 9b 'of which is connected to the eccentric 10 arranged on the main shaft 7 and the second lever arm 9b "of which the lever 9a, 9b connecting coupling 9c is articulated.
  • Figure 3 shows the match tree 2 with the modules 4,5,6 according to the invention, the first Module 4 on the lateral surface 2b of the match tree 2 over its working width L is arranged.
  • the connection of the module 4 to the lateral surface 2b can be done in many different ways. The type of connection is not an issue the invention.
  • the arrangement of the module 4 on the match tree 2 is clearly shown in Figure 4. It is important here that the free lateral surface 4a of the module 4 has a radius r 2 which is significantly smaller than the radius r 1 of the match tree diameter.
  • the module 4 is thereby designed in the manner of a cam which is connected to the match tree 2 on the lateral surface 2b.
  • FIGS. 3 and 4 also show a second and third module 5, 6 or a module 5 which is designed in the manner of a segment cut out of a closed U-profile ring.
  • the inner lateral surface of the modules 5, 6 has a contour which corresponds to the outer contour which arises from the modular connection of the match tree 2 to the module 4.
  • the further modules 5, 6 are non-rotatably connected to the module 4. It goes without saying that the modules 5 and 6 can be secured against an axial displacement on the match tree 2.
  • FIG. 1 In the present exemplary embodiment according to FIG.
  • FIG. 6 shows a warp beam 1 wound with a plurality of warp thread groups 3a, 3b, which is rotatably supported in the weaving machine in the direction of rotation indicated by the arrow 8, and a match beam 2, which is likewise rotatably supported in the weaving machine about its longitudinal center axis 2a.
  • the match tree has 2 modular structures 4,5.
  • a first warp thread group 3a is guided over the module 5, while a second warp thread group 3b is guided over a section of the lateral surface of the match tree 2 in the direction of the heald frames, not shown.
  • the warp threads of the first warp thread group 3a which can be, for example, edge warp threads of a fabric to be produced, are guided over the module 5 with a much larger wrap angle and are accordingly pretensioned, i.e. still have sufficient warp tension when changing the shed, the warp tension in the warp threads changes when the shed is changed the second warp thread group 3b considerably.
  • the second warp thread group 3b experiences a compensation of the warp tension synchronously by the module 4 of the match tree 2.
  • the match tree 2 is connected in a manner known per se either via a motion transmission mechanism 9 to an eccentric 10 arranged on the main shaft 7 or the match tree 2 is operatively connected to at least one spring 11 which compensates for the warp tension.
  • the desired warp tension in the warp thread group 3b is largely maintained with each change of subject via the module 4.
  • the modular match tree 2 is available both with the means 7, 9, 10 for executing a positively controlled oscillating movement about its longitudinal central axis 2a and with at least one means 11 Execution of an uncontrolled oscillating movement in operative connection, the means used for the forced control of the match tree 2 suppressing in their effect the means for uncontrolled application of the match tree. If the match tree 2 is to be loaded only by the uncontrolled means, that is to say by the at least one spring 11, then the means for positive control are decoupled from the match tree 2 in a simple manner.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Paper (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Woven Fabrics (AREA)
  • Warping, Beaming, Or Leasing (AREA)

Claims (14)

  1. Procédé pour la compensation de la modification de l'allongement ou de la tension provoquée lors du changement du pas de chaíne dans une chaíne de tissage guidée par une ensouple de tissage par l'intermédiaire d'un porte-fils monté pour pouvoir tourner autour de son axe médian longitudinal dans un métier à tisser et oscillant lors de la fabrication d'un tissu qui comporte au moins un premier et/ou au moins un deuxième type de liage, caractérisé en ce que
    la chaíne de tissage, en préparation d'un processus de tissage, est guidée comme au moins un premier et/ou un deuxième groupe de fils de chaíne par l'intermédiaire de modules raccordables séparément au porte-fils et
    pendant le processus de tissage, la modification de l'allongement ou de la tension d'au moins le premier groupe de fils de chaíne est compensé indépendamment de la modification de l'allongement ou de la tension des autres groupes de fils de chaíne.
  2. Procédé selon la revendication 1, caractérisé en ce que la modification de l'allongement ou de la tension d'au moins le premier groupe de fils de chaíne est compensée par le fait que le mouvement oscillant provenant d'un entraínement est transmis au tambour de décharge équipé des modules séparés.
  3. Procédé selon la revendication 2, caractérisé en ce que l'entraínement est l'arbre d'entraínement principal du métier à tisser.
  4. Procédé selon la revendication 2, caractérisé en ce que l'entraínement est un entraínement indépendant de l'entraínement principal.
  5. Procédé selon la revendication 1, caractérisé en ce que la modification de l'allongement ou de la tension d'au moins le premier groupe de fils de chaíne est compensée par le fait que le porte-fils équipé des modules séparés fonctionne sous l'action d'un ressort.
  6. Procédé selon la revendication 1, caractérisé en ce que la modification de l'allongement ou de la tension d'au moins le premier groupe de fils de chaíne est compensée par le fait que le mouvement oscillant du porte-fils à commande forcée est superposé au mouvement oscillant du porte-fils à commande non forcée.
  7. Procédé selon la revendication 6, caractérisé en ce que le mouvement oscillant du porte-fils à commande forcée est dominant par rapport au mouvement oscillant du porte-fils à commande non forcée.
  8. Métier à tisser pour la réalisation du procédé selon la revendication 1, avec un porte-fils (2) monté pour pouvoir pivoter, sur lequel est guidée une chaíne de tissage (3a, 3b, 3c) provenant d'au moins une ensouple de tissage (1) pour la fabrication d'un tissu, avec des moyens (7, 9, 10) qui transmettent un mouvement oscillant au porte-fils (2), et moyennant quoi le tissu à fabriquer comporte un premier et/ou au moins un deuxième type de liage, caractérisé en ce que le porte-fils (2) est équipé, sur sa largeur de travail (L), d'au moins un premier module (4) pour la compensation de l'allongement ou de la tension dans la chaíne de tissage (3b).
  9. Métier à tisser selon la revendication 8, caractérisé en ce que le premier module (4) est disposé à la manière d'une came sur la surface de l'enveloppe (2b) du porte-fils (2).
  10. Métier à tisser selon les revendications 8 et 9, caractérisé en ce qu'au moins un deuxième module (5), qui enveloppe totalement la surface libre de l'enveloppe (4a) du premier module (4) et partiellement la surface de l'enveloppe (2b) du porte-fils (2), est configuré à la manière d'une came.
  11. Métier à tisser selon les revendications 8 et 9, caractérisé en ce que le premier module (4) est raccordé au porte-fils (2) de manière à résister à la torsion, et en ce que d'autres modules (5, 6) sont raccordés au premier module (4) de manière à résister à la torsion.
  12. Métier à tisser selon la revendication 8, caractérisé en ce que le premier module (4), conjointement avec le porte-fils (2), forme un angle d'enroulement plus grand pour la chaíne de tissage (3b) que la surface de l'enveloppe (2b) du porte-fils (2) seul, et en ce que le deuxième module (5) forme un angle d'enroulement comparativement plus grand que le porte-fils (2) conjointement avec le premier module (4).
  13. Métier à tisser selon la revendication 8, caractérisé en ce que, en plus des moyens (7, 9, 10), au moins un élément de ressort (11) est raccordé de manière active au porte-fils (2).
  14. Métier à tisser selon l'une des revendications 8 à 13, caractérisé en ce que, au choix, les moyens (7, 9, 10) ou l'élément de ressort (11) peuvent être découplés de la transmission du mouvement.
EP99121739A 1998-12-07 1999-11-03 Procédé pour compenser le changement de la longueur et de la tension de la chaíne et métier à tisser pour la mise en oeuvre du procédé Expired - Lifetime EP1008683B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19856308 1998-12-07
DE1998156308 DE19856308B4 (de) 1998-12-07 1998-12-07 Verfahren zur Kompensation der Längungs- oder Spannungsänderung in einer Webkette und Webmaschine zur Durchführung des Verfahrens
DE19915952 1999-04-09
DE19915952A DE19915952A1 (de) 1998-12-07 1999-04-09 Verbessertes Verfahren zur Kompensation der Längungs- oder Spannungsänderung in einer Webkette und Webmaschine zur Durchführung des Verfahrens

Publications (2)

Publication Number Publication Date
EP1008683A1 EP1008683A1 (fr) 2000-06-14
EP1008683B1 true EP1008683B1 (fr) 2003-05-21

Family

ID=26050598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99121739A Expired - Lifetime EP1008683B1 (fr) 1998-12-07 1999-11-03 Procédé pour compenser le changement de la longueur et de la tension de la chaíne et métier à tisser pour la mise en oeuvre du procédé

Country Status (7)

Country Link
US (1) US6135163A (fr)
EP (1) EP1008683B1 (fr)
JP (1) JP3135896B2 (fr)
AT (1) ATE241026T1 (fr)
DE (2) DE19915952A1 (fr)
ES (1) ES2198837T3 (fr)
PT (1) PT1008683E (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7178558B2 (en) * 2005-04-25 2007-02-20 Massachusetts Institute Of Technology Modular weaving for short production runs
US7318456B2 (en) * 2005-04-25 2008-01-15 Massachusetts Institute Of Technology Modular weaving system with individual yarn control
DE102005059911B3 (de) * 2005-12-15 2007-02-08 Groz-Beckert Kg Schaftantrieb für eine Webmaschine
EP2049717A2 (fr) * 2006-07-10 2009-04-22 Arvind Limited Procédé et appareil d'ourdissage et procédé de teinture de fils fins fortement torsadés
US8662112B2 (en) * 2009-12-04 2014-03-04 Taiwan Textile Research Institute Weaving machines and three-dimensional woven fabrics
TWI364466B (en) * 2009-12-04 2012-05-21 Taiwan Textile Res Inst Weaving machines and three-dimensional woven fabrics
CN102505292B (zh) * 2011-10-19 2013-11-13 东华大学 一种基于主动式电动后梁的织机经纱动态张力控制方法
CN102433664B (zh) * 2011-10-19 2013-11-13 东华大学 基于主动式磁电集成后梁的织机经纱动态张力控制方法
JP2013227715A (ja) 2012-04-24 2013-11-07 Manikam Ramaswami 織機の改良した綜絖枠運動
WO2015014497A1 (fr) 2013-08-02 2015-02-05 Schweitzer-Mauduit International, Inc. Produit comestible comprenant une matière végétale reconstituée
DE102013219942A1 (de) 2013-10-01 2015-04-02 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren und Vorrichtung zum Aufbringen von Kräften und Bewegungen auf Kettfäden einer Webmaschine
CN104988655B (zh) * 2015-07-17 2017-10-17 天津工业大学 一种经编机的张力装置
JP6344411B2 (ja) 2016-02-25 2018-06-20 株式会社豊田自動織機 織機における経糸開口装置
CN109249629B (zh) * 2018-10-24 2024-01-30 浙江德毅隆科技股份有限公司 一种用于格栅生产的走纱机构、生产方法及其格栅
JP7237176B2 (ja) 2019-10-08 2023-03-10 日立Astemo株式会社 通信システム、電子制御装置及び通信方法

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US1254306A (en) * 1915-10-20 1918-01-22 John Manning Van Heusen Manufacture of collars and cuffs.
CH250056A (fr) * 1944-12-29 1947-08-15 Dewas Raymond Dispositif pour tendre les fils de chaînes des lisières se déroulant d'une ensouple.
CS149784B1 (fr) * 1970-04-28 1973-08-23
BE792485A (fr) * 1971-12-10 1973-06-08 Sulzer Ag Barre de deviation des fils de chaine d'un metier a tisser
US3759299A (en) * 1972-01-06 1973-09-18 A Selivanov Warp tension device for looms
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CH623873A5 (fr) * 1977-12-02 1981-06-30 Sulzer Ag
CH655144A5 (de) * 1982-04-29 1986-03-27 Sulzer Ag Vorrichtung zur verstellung der spannung eines spannbaumes einer webmaschine.
CH664389A5 (de) * 1984-10-16 1988-02-29 Saurer Ag Adolph Einrichtung zur steuerung der kettfadenspannung durch lageverschiebung eines streichbaumes an einer webmaschine.
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IT1292227B1 (it) * 1997-05-08 1999-01-29 Somet Soc Mec Tessile Dispositivo per controllare la geometria del passo in corrispondenza della cimossa del tessuto,in un telaio di tessitura
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Also Published As

Publication number Publication date
PT1008683E (pt) 2003-10-31
DE19915952A1 (de) 2000-10-12
ES2198837T3 (es) 2004-02-01
ATE241026T1 (de) 2003-06-15
JP2000212861A (ja) 2000-08-02
US6135163A (en) 2000-10-24
JP3135896B2 (ja) 2001-02-19
EP1008683A1 (fr) 2000-06-14
DE59905631D1 (de) 2003-06-26

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