EP2505702B2 - Lisse dotée d'un corps de lisse formé par sections de plusieurs couches de feuilles - Google Patents

Lisse dotée d'un corps de lisse formé par sections de plusieurs couches de feuilles Download PDF

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Publication number
EP2505702B2
EP2505702B2 EP11160055.7A EP11160055A EP2505702B2 EP 2505702 B2 EP2505702 B2 EP 2505702B2 EP 11160055 A EP11160055 A EP 11160055A EP 2505702 B2 EP2505702 B2 EP 2505702B2
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EP
European Patent Office
Prior art keywords
heald
film layers
thread
layers
film
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
EP11160055.7A
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German (de)
English (en)
Other versions
EP2505702A1 (fr
EP2505702B1 (fr
Inventor
Christian Dr. Gerth
Rainer Grossmann
Mario Gusenko
Bernhard Münster
Armin FÄLLER
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.)
Groz Beckert KG
Original Assignee
Groz Beckert KG
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.)
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Publication date
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Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Priority to EP16165424.9A priority Critical patent/EP3067448B1/fr
Priority to EP11160055.7A priority patent/EP2505702B2/fr
Priority to JP2012045087A priority patent/JP6014294B2/ja
Priority to KR1020120029184A priority patent/KR101988892B1/ko
Priority to CN201210083590.XA priority patent/CN102704136B/zh
Publication of EP2505702A1 publication Critical patent/EP2505702A1/fr
Priority to JP2016186350A priority patent/JP6316894B2/ja
Publication of EP2505702B1 publication Critical patent/EP2505702B1/fr
Publication of EP2505702B2 publication Critical patent/EP2505702B2/fr
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/02—Healds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F45/00—Wire-working in the manufacture of other particular articles
    • B21F45/08—Wire-working in the manufacture of other particular articles of loom heddles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/02—Healds
    • D03C9/026—Material used

Definitions

  • the invention relates to a heddle for a heald frame of a weaving machine.
  • a heald shaft of a weaving machine a large number of healds are arranged, each of which serves to receive a warp thread.
  • a shed is opened into which a weft thread can be inserted.
  • Weaving machines have several heald shafts. Therefore, some warp threads run through the thread eyes of the healds of a heald frame, while other warp threads run through the gaps between two adjacent healds when they are guided through healds of another heald frame.
  • heald frames move between the two reversal points at great speed, which requires great acceleration of the heddle frames. This places high demands on the healds. On the one hand, they must be sufficiently stable and have as long a service life as possible despite the relative movement to the warp threads.
  • healds that are as light as possible are desired in order to keep the total weight of the heddle shaft to be accelerated with the large number of healds as low as possible.
  • a heald which has a heald body which can be stamped out of metal or plastic.
  • the area of the thread eye is twisted or twisted out of the plane in which the rest of the heald body extends, and in addition the two longitudinal webs delimiting the thread eye are interlaced.
  • Another heald made of plastic is from the EP 2 224 046 A1 known. This plastic heald is characterized by a special design of the guide surfaces in the area of the thread eye.
  • healds are also known which have a heald body made of a flat metal strip, for example made of U.S. 5,348,055 .
  • CH 601 532 it is also proposed to attach end eyelets made of plastic to a metallic heald body part.
  • EP 1 795 636 A1 well-known heddle has a heddle body which consists of two flat tapes attached to each other. The tapes are spaced apart in the thread eye area and pins are inserted between the spaced tape sections to form the thread eye.
  • U.S. 5,005,608 describes a split strand made of two bands. These bands are only connected at one end and otherwise fit loosely against each other. To insert a warp thread, the two tapes can be separated from one another and the warp thread inserted between them up to a thread eyelet.
  • the thread eyelet is formed by a recess in each band and a groove-like bulge adjoining the respective recess. Lay the bands touch each other, the bulge of one band engages in the recess on the other band and a thread eye is formed in the plane of the contact surfaces between the bulges.
  • the heald has a heald body which extends in the longitudinal direction and has a thread eyelet for receiving the warp thread.
  • the heddle body itself also has end eyelets with which the heddle can be arranged on a heddle support rail of the heald frame.
  • the heddle body has at least two foil layers or is formed by the foil layers which lie flat against one another and are connected to one another.
  • the film layers are connected in particular by means of a material connection, for example by gluing.
  • the heald may have one or more reinforcement sections in the longitudinal direction.
  • the reinforcement sections can be spaced apart from one another or directly adjoin one another. It is also possible to construct the entire heald body with several continuous foil layers in the longitudinal direction.
  • the heald body from a film-like, thin material that is at least the reinforcement sections is strengthened by additional layers of film.
  • An inner film layer can, for example, be arranged continuously in the longitudinal direction of the heddle body and ensure the necessary tensile strength of the heddle body.
  • this inner foil can be reinforced by attaching one or more additional foil layers in order to improve the resistance of the heddle body to being cut by a warp thread.
  • the material of the different film layers is chosen to match the desired properties.
  • the individual film layers consist of a plastic material.
  • the plastic material can also serve as a plastic matrix to which additional elements such as fibers, spheres or other bodies are added, resulting in a plastic-based composite material.
  • the additional elements can be made of glass, ceramic or metal.
  • the plastic or composite material can be electrically conductive or have electrically conductive components in order to prevent electrostatic charging of the plastic strand.
  • an electrical connection to at least one electrically conductive heddle support rail is established by its electrically conductive components in order to allow electrical dissipation via the heddle support rail of the heddle shaft and thereby prevent static charging of the heald body.
  • the entire strand body of the plastic strand to consist of electrically conductive plastic or composite material, or for only individual layers of a multi-layer strand body to be electrically conductive.
  • the electrically conductive layers or the stranded body can consist entirely of composite material that contains a non-electrically conductive plastic matrix, which is connected to electrically conductive additional elements, for example made of metal and/or graphite.
  • additional elements for example made of metal and/or graphite.
  • whiskers and/or nanotubes or the like can serve as additional elements.
  • the heald body can be provided with a metal layer on its two flat sides, at least in sections and/or in the area of the thread eyelet, on the outer surface. This reduces wear on the heald body, particularly in the areas of contact with the warp threads.
  • the metal layers can be electrically connected to one another and, when the stranded wire is in its position of use, can produce an electrical connection to at least one electrically conductive stranded wire support rail.
  • the heald body can have a greater thickness in the at least one reinforcement section than in the sections adjoining the reinforcement section, which can be referred to as connecting sections.
  • the number of film layers in the reinforcement section is greater than in the connection section.
  • the thickness of the film layers arranged one on top of the other in a reinforcement section can be different.
  • a central foil layer can have a greater thickness to produce tensile strength, as an outer film layer arranged on top of it, which protects the heald body from being cut in by a thread.
  • the thickness of a film layer is measured at right angles to its plane of extension.
  • the heddle described is produced by providing at least a first film web and a second film web.
  • the two foil webs are placed one on top of the other and connected to one another, for example by gluing or another type of material connection.
  • the film webs can also be connected to one another directly during their production process step, for example by means of coextrusion of the multi-layer web.
  • it can be stretched in its extension plane in the direction of the web and/or transversely thereto in the width direction.
  • the molecular structures are aligned and the strength in the direction of stretching is increased. It is also possible to stretch one or more of the film layers and then combine them to form a multi-layer web.
  • a multi-layer web is formed, at least in the reinforcement sections.
  • the heald body is then separated from this web, which is multi-layered at least in sections, for example by being punched out.
  • the heald body is thus designed as a separating part or stamped part.
  • the end eyelets and the thread eyelet can be punched out first.
  • the outer contour of the heddle body is punched out. In this way, a multiplicity of heald bodies can be punched out of a multi-layer web.
  • the heald body can also be made from be cut out of the multi-layer web, for example by laser or ultrasonic cutting.
  • the cut or punched-out heald body is not processed further, but represents the finished heald.
  • the drawing shows exemplary embodiments of a heddle 10 with a heald body 11 extending in a longitudinal direction L.
  • the heald body 11 has a thread eye 12 for guiding a warp thread, which is arranged approximately centrally in the heald body 11 .
  • An end eyelet 13 is provided on each of the two longitudinal ends of the heddle body 11 and is used for arranging the heddle on the heald support rails of a heald frame.
  • the end eyelets 13 are shown as O-shaped end eyelets which are closed in the form of a ring. Alternatively, it is also possible to open the end loops laterally at one point to form C-shaped or J-shaped end loops.
  • heald 10 The various embodiments of the heald 10 shown in the drawing are highly schematic and are not shown to scale. In the drawing, only the principle of the heald 10 according to the invention and its production are to be illustrated.
  • the heald body is constructed in multiple layers at least along a reinforcement section 15 extending in the longitudinal direction L.
  • the heddle body 11 consists of two or more film layers 16 which are laid flat on top of one another and connected to one another.
  • the film layers 16 are bonded to one another over a large area, for example glued.
  • the material connection is carried out over the entire surface along the entire contact surface between the film layers 16 lying against one another.
  • different film layers can also be produced by coextrusion and connected to one another in one step, so that a subsequent joining process such as gluing can be omitted.
  • the number of foil layers 16 in a reinforcement section 15 can vary. There is preferably at least one central or inner film layer 16a sandwiched between two outer film layers 16b.
  • the at least one inner foil layer 16a is used to give the heald body 11 the necessary tensile strength.
  • the thickness of the at least one inner film layer 16a, the number of inner film layers 16a, the material, etc. are selected accordingly.
  • the entire heald body 11 is preferably made of plastic.
  • the various film layers and in particular the inner film layers 16a and the outer film layers 16b can consist of different plastics. It is also possible to use composite materials based on plastic, with additional elements being added to a plastic matrix, which can consist of glass and/or ceramic and/or metal, for example. Such additional elements can be formed by short fibers (so-called whiskers) and/or spheres and/or other small bodies. However, a uniform material is used for each film layer.
  • the two outer foil layers 16b serve to increase the wear resistance of the heald body 11 in relation to the warp thread 19 and in relation to the heddle support rails. Therefore, in a preferred embodiment, at least three reinforcement sections 15 are provided.
  • the two end eyelets 13 and the thread eyelet 12 are located in these three reinforcement sections 15 .
  • the heald body 11 must be protected against being cut in by the warp thread 19 .
  • the heald 10 is greatly accelerated and takes the warp thread guided in the thread eyelet 12 with it in order to bring it into the desired position to take a stand. Due to the high accelerations, relatively high forces also act between the warp thread 19 and the heddle body 11.
  • the two outer foil layers 16b around the thread eyelet 12 are made of a plastic or composite material that is particularly wear-resistant and ensures a long service life for the heddle 10 guaranteed.
  • a plastic or composite material that is particularly wear-resistant and ensures a long service life for the heddle 10 guaranteed.
  • polyethylene, polypropylene or polycarbonate can be used for the at least one inner film layer 16a.
  • Polyamide, for example, can be used for the outer film layers 16b.
  • the plastics mentioned can also be used as a plastic matrix in a composite material.
  • foil webs are provided, which are connected to one another over a large area and then form a multi-layer web 17, as is shown in an example in 2 is shown.
  • the entire heald body 11 has a multi-layer design in its longitudinal direction L.
  • the number of foil layers 16 is constant in the longitudinal direction L along the heald body. All foil layers 16 extend over the entire length of the heald body 11.
  • the heald body 11 is then severed from such a multi-layer film web 17 .
  • the heddle body 11 is preferably punched out.
  • the stamping process can take place in one or more steps. It is possible first to punch out the thread eyelet 12 and the end eyelets 13 from the film web 17 in a first punching process. The outer contour 18 can then be punched out. Alternatively, the punching processes can also take place simultaneously. After punching, a heald body 11 is obtained as a punched part, as shown schematically in 1 is shown.
  • the plane in which the thread eye 12 extends may be necessary for the plane in which the thread eye 12 extends to twist relative to the plane in which the end eyelets 13 extend, as is the case with reference to FIG Figures 3 and 4 is illustrated.
  • a central longitudinal section of the heald body 11 can be plastically deformed in order to fix the plane of the thread eyes relative to the plane of the end eyelets 13 in the twisted position. This makes it possible to guide a warp thread 19 through the thread eyelet 12 without the warp thread 19 being subjected to a torsional moment of the heddle 10 .
  • the foil layers 16 of the heald body 11 can be shorter than the heald body 11 viewed in the longitudinal direction L and can only be arranged in a reinforcement section 15 . In the transverse direction Q, transverse to the longitudinal direction L and in the extension plane of the film layer 16, all film layers 16 extend over the entire width of the heald body 11.
  • the heald body 11 is of non-uniform thickness in the longitudinal direction L. It has a plurality of reinforcement sections 15 spaced apart in the longitudinal direction L, for example three. These are located in the two end areas on the end eyelets 13 and in the central area on the thread eyelet 12. The two end reinforcement sections 15 are connected to the central reinforcement section 15 via a connecting section 21 each. The number of film layers 16 is less in the connecting sections 21 than in the reinforcing sections 15. In the exemplary embodiment, the connecting sections are formed by only one central or inner film layer 16a. This inner film layer 16a extends in the longitudinal direction L continuously through the entire heald body 11.
  • the inner film layer 16a is reinforced by at least one further film layer and sandwiched, for example, by two outer film layers 16b arranged on opposite sides.
  • the multi-layer web 17 only has a plurality of foil layers at the points corresponding to the reinforcement sections 15 after the heald body 11 has been severed. The view of the front edge of such a film web 17 would correspond to the illustration in figure 5 are equivalent to.
  • the individual film layers 16 can have different thicknesses depending on their function and/or depending on the material used.
  • a purely exemplary representation of film layers 16 of different thicknesses is shown in 6 sketched.
  • a plurality of inner film layers 16a are provided, each having a thickness da. All inner foil layers 16a extend in the longitudinal direction L along the entire heald body 11. The total thickness di therefore results from the thickness da of an inner foil layer 16a multiplied by the number of inner foil layers 16a provided.
  • five inner film layers 16a are provided here, the number of which can be selected according to the requirements.
  • the tensile strength of the heald 10 can be increased by increasing the number of inner film layers 16a. This enables healds 10 to be produced very flexibly and inexpensively, with production being able to be very easily adapted to different load cases.
  • the thickness db of the two outer film layers 16b is smaller than the total thickness di of all inner film layers 16a and, for example, greater than the thickness da of a single inner film layer 16a. In a modification of this could on both sides of the heald body 11 respectively several outer foil layers 16b can also be provided.
  • the invention relates to a heddle 10, the heddle body 11 of which is constructed in several layers, at least in sections.
  • the heald body 11 has at least one reinforcement section 15 which consists of a plurality of foil layers 16 .
  • at least one inner film layer 16a extends in the longitudinal direction L along the entire heald body 11.
  • This at least one inner film layer 16a is in particular in the section around the thread eyelet 12 and/or in the section around the end eyelets 13 of the heald body 11 with at least one and preferably two outer Foil layers 16b to form reinforcement sections 15 reinforced.
  • the reinforcement sections 15 can be constructed in a sandwich-like manner, so to speak, from preferably at least three film layers 16a, 16b. The result is a simple production by providing a multi-layer foil web at least in sections and cutting out or punching out the heald body 11 from this multi-layer foil web.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Looms (AREA)
  • Moulding By Coating Moulds (AREA)
  • Laminated Bodies (AREA)

Claims (15)

  1. Lisse de tissage (10) destinée à une lame de tissage,
    comportant un corps de lisse (11) qui s'étend dans une direction longitudinale (L) et qui présente un oeil pour fil (12) qui sert à recevoir un fil de chaîne (19),
    le corps de lisse (11) présentant au moins dans un segment de renforcement (15) au moins deux couches de feuille mince (16a, 16b) qui sont disposées à plat l'une contre l'autre et qui sont reliées entre elles,
    caractérisée en ce que les couches de feuille mince (16a, 16b) sont reliées entre elles par matière, sur toute la surface, le long de l'ensemble de la surface de contact, et en ce qu'un segment de liaison (21) du corps de lisse (11) se raccorde au segment de renforcement (15), au nombre d'au moins un, du corps de lisse (11), avec au moins deux couches de feuille mince (16a, 16b), le segment de liaison (21) présentant moins de couches de feuille mince (16a) que le segment de renforcement (15) qui s'y raccorde.
  2. Lisse de tissage selon la revendication 1,
    caractérisée en ce qu'au moins trois couches de feuille mince (16) sont prévues dans le segment de renforcement (15).
  3. Lisse de tissage selon la revendication 1,
    caractérisée en ce que le corps de lisse (11) présente plusieurs segments de renforcement (15) comportant chacun au moins deux couches de feuille mince (16).
  4. Lisse de tissage selon la revendication 1,
    caractérisée en ce que le corps de lisse (11) ne présente qu'une seule couche de feuille mince (16a) dans le segment de liaison (21).
  5. Lisse de tissage selon la revendication 1,
    caractérisée en ce que l'ensemble du corps de lisse (11) présente au moins deux couches de feuille mince (16).
  6. Lisse de tissage selon la revendication 1,
    caractérisée en ce qu'au moins une couche de feuille mince (16a) centrale s'étend dans la direction longitudinale (L) le long de l'ensemble du corps de lisse (11).
  7. Lisse de tissage selon la revendication 6,
    caractérisée en ce que la couche de feuille mince (16a) centrale est disposée dans les segments de renforcement (15) entre deux couches de feuille mince (16b) externes.
  8. Lisse de tissage selon la revendication 1,
    caractérisée en ce qu'une couche de feuille mince (16a) est obtenue à partir d'un premier matériau et qu'au moins une autre couche de feuille mince (16b) est obtenue à partir d'un deuxième matériau.
  9. Lisse de tissage selon la revendication 1,
    caractérisée en ce que le corps de lisse (11) est obtenu à partir d'un matériau du type matière de synthèse ou d'un matériau composite.
  10. Lisse de tissage selon la revendication 9,
    caractérisée en ce que le matériau du type matière de synthèse ou le matériau composite est électriquement conducteur ou présente des composants électriquement conducteurs.
  11. Lisse de tissage selon la revendication 1,
    caractérisée en ce que le corps de lisse (11) est muni sur sa surface extérieure, d'une couche métallique, sur ses côtés plats, au moins sur certains segments et/ou dans la zone de l'oeil pour fil (12).
  12. Lisse de tissage selon la revendication 1,
    caractérisée en ce que l'épaisseur (da, db) de deux couches de feuille mince (16a, 16b) dans un segment de renforcement (15) est différente.
  13. Lisse de tissage selon la revendication 1,
    caractérisée en ce que le segment longitudinal, dans la zone de l'oeil pour fil (12), est tordu par rapport au plan dans lequel s'étend le reste du corps de lisse (11).
  14. Lisse de tissage selon la revendication 1,
    caractérisée en ce qu'il existe un segment de renforcement (15) à l'intérieur duquel se trouve l'oeil pour fil (12).
  15. Lisse de tissage selon la revendication 1,
    caractérisée en ce qu'il existe deux segments de renforcement (15) à l'intérieur desquels se trouvent les yeux d'extrémité (13).
EP11160055.7A 2011-03-28 2011-03-28 Lisse dotée d'un corps de lisse formé par sections de plusieurs couches de feuilles Active EP2505702B2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP16165424.9A EP3067448B1 (fr) 2011-03-28 2011-03-28 Procédé de fabrication d'une lisse
EP11160055.7A EP2505702B2 (fr) 2011-03-28 2011-03-28 Lisse dotée d'un corps de lisse formé par sections de plusieurs couches de feuilles
JP2012045087A JP6014294B2 (ja) 2011-03-28 2012-03-01 部分的に複数のフォイル層から構成された本体を有するヘルド
KR1020120029184A KR101988892B1 (ko) 2011-03-28 2012-03-22 부분적으로 다수의 포일층으로 구성되는 헤들 본체를 갖는 헤들
CN201210083590.XA CN102704136B (zh) 2011-03-28 2012-03-27 具有部分由多层薄片构造的综片本体的综片
JP2016186350A JP6316894B2 (ja) 2011-03-28 2016-09-24 部分的に複数のフォイル層から構成された本体を有するヘルド

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11160055.7A EP2505702B2 (fr) 2011-03-28 2011-03-28 Lisse dotée d'un corps de lisse formé par sections de plusieurs couches de feuilles

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP16165424.9A Division-Into EP3067448B1 (fr) 2011-03-28 2011-03-28 Procédé de fabrication d'une lisse
EP16165424.9A Division EP3067448B1 (fr) 2011-03-28 2011-03-28 Procédé de fabrication d'une lisse

Publications (3)

Publication Number Publication Date
EP2505702A1 EP2505702A1 (fr) 2012-10-03
EP2505702B1 EP2505702B1 (fr) 2016-12-14
EP2505702B2 true EP2505702B2 (fr) 2023-05-17

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ID=44767470

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16165424.9A Active EP3067448B1 (fr) 2011-03-28 2011-03-28 Procédé de fabrication d'une lisse
EP11160055.7A Active EP2505702B2 (fr) 2011-03-28 2011-03-28 Lisse dotée d'un corps de lisse formé par sections de plusieurs couches de feuilles

Family Applications Before (1)

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EP16165424.9A Active EP3067448B1 (fr) 2011-03-28 2011-03-28 Procédé de fabrication d'une lisse

Country Status (4)

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EP (2) EP3067448B1 (fr)
JP (2) JP6014294B2 (fr)
KR (1) KR101988892B1 (fr)
CN (1) CN102704136B (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6350210B2 (ja) * 2014-10-27 2018-07-04 株式会社豊田自動織機 樹脂製ヘルド及び樹脂製ヘルドの製造方法
CN109943943A (zh) * 2019-03-21 2019-06-28 常州百佳年代薄膜科技股份有限公司 聚酯薄膜综丝的制备方法

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JP5000340B2 (ja) * 2007-03-13 2012-08-15 旭化成ケミカルズ株式会社 綜絖用樹脂組成物
DE102007048761B4 (de) * 2007-10-10 2011-11-24 Heinrich Derix Gmbh Weblitze
EP2224046B1 (fr) * 2009-02-26 2011-08-31 Groz-Beckert KG Lisse en matière plastique

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EP2505702A1 (fr) 2012-10-03
CN102704136B (zh) 2015-09-30
JP2012207355A (ja) 2012-10-25
KR101988892B1 (ko) 2019-06-14
KR20120110016A (ko) 2012-10-09
JP2017036536A (ja) 2017-02-16
CN102704136A (zh) 2012-10-03
EP2505702B1 (fr) 2016-12-14
JP6316894B2 (ja) 2018-04-25
EP3067448B1 (fr) 2019-08-07
JP6014294B2 (ja) 2016-10-25
EP3067448A1 (fr) 2016-09-14

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