EP3067448B1 - Verfahren zur herstellung einer weblitze - Google Patents

Verfahren zur herstellung einer weblitze Download PDF

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Publication number
EP3067448B1
EP3067448B1 EP16165424.9A EP16165424A EP3067448B1 EP 3067448 B1 EP3067448 B1 EP 3067448B1 EP 16165424 A EP16165424 A EP 16165424A EP 3067448 B1 EP3067448 B1 EP 3067448B1
Authority
EP
European Patent Office
Prior art keywords
heald
web
heald body
film layers
cut out
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
EP16165424.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3067448A1 (de
Inventor
Rainer Grossmann
Mario Gusenko
Bernhard Münster
Armin FÄLLER
Christian Gerth
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.)
Filing date
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/de
Publication of EP3067448A1 publication Critical patent/EP3067448A1/de
Application granted granted Critical
Publication of EP3067448B1 publication Critical patent/EP3067448B1/de
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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 method for producing a heald for a heald of a loom.
  • a loom of a loom a plurality of strands are arranged, which serve to receive a respective warp thread.
  • a shed is opened into which a weft thread can be inserted.
  • Looms have several healds. The one warp threads therefore pass through the thread eyes of the strands of a heald, while other warp threads pass through the spaces between two adjacent strands when passed through strands of another heald.
  • healds move at great speed between the two reversal points, which requires large accelerations of the heald frames. This makes high demands on the healds. On the one hand, they must be sufficiently stable and, in spite of the relative movement to the warp threads, have the largest possible service life. In addition, as light as possible healds are desired to keep the accelerated total weight of the heald with the plurality of healds as low as possible.
  • a heddle which has a heddle body which may be stamped out of metal or plastic.
  • the area of the thread eye is rotated or twisted out of the plane in which the rest of the strand body extends, and in addition the two longitudinal webs delimiting the thread eye are entangled.
  • plastic heald is from the EP 2 224 046 A1 known.
  • This plastic strand is characterized by a special design of the guide surfaces in the region of the thread eye.
  • healds which have a strand body made of a flat metal strip, for example US 5,348,055 , In CH 601 532 It is also proposed to attach plastic end lugs to a metal strand body part.
  • EP 1 795 636 A1 Known strand has a strand body, which consists of two surface-mounted bands.
  • the bands are spaced apart in the Fadenaug Scheme and between the spaced band sections pins are used to form the thread eye.
  • US 5,005,608 describes a split strand of two bands. These bands are connected only at one end and are otherwise loosely attached to each other. To insert a warp thread, the two tapes can be separated from each other and the warp thread between them can be used up to a thread eye.
  • the thread eye is formed by a respective recess in each band and a subsequent to the respective recess groove-like bulge. If the bands touch each other, the bulge of one engages Bandes in the recess on the other band and it is formed in the plane of the contact surfaces between the bulges a thread eye.
  • the heald is made by providing at least a first film web and a second film web.
  • the two film webs are placed on each other to form the at least one reinforcing portion and connected to each other, for example by gluing or another cohesive connection.
  • the film webs can also be joined together directly in their manufacturing process step, for example by means of coextrusion of the multilayer web.
  • it can be stretched in its direction of extent in the course direction of the web and / or transversely thereto in the width direction.
  • the molecular structures are aligned and the strength increased in the direction of stretching. It is also possible to stretch one or more of the film layers and then join them together to form the multilayer web.
  • a multilayer web is formed at least in the reinforcing sections. From this at least partially multi-layered web then the strand body is cut out, for example by punching.
  • the heald body is thus designed as a separating part or stamped part.
  • the end eyelets and the thread eye can be punched out.
  • the outer contour of the Litzen emotionss punched out From a multilayer web can be punched out in this way a variety of Litzen emotionsn.
  • the strand body can also be cut out of the multilayer web, for example by laser or ultrasonic cutting.
  • the cut or punched strand body is not further processed but represents the finished heald.
  • the heddle has a longitudinally extending strand body which has a thread eye for receiving the warp thread.
  • the heddle body itself preferably also has end-side end loops with which the heddle can be arranged on a heddle support rail of the reef.
  • the strand body points in a reinforcing section at least two layers of film or is formed by the film layers, which lie flat against each other and are interconnected.
  • the bonding of the film layers is effected in particular by a cohesive connection, for example by gluing.
  • the heddle may have one or more longitudinal reinforcing sections. The reinforcing portions may be spaced from each other or immediately adjoin one another. It is also possible to construct the entire strand body with several continuous film layers in the longitudinal direction.
  • An inner film layer may for example be arranged continuously in the longitudinal direction of the strand body and provide the necessary tensile strength of the strand body.
  • this inner film can be reinforced by attaching one or more additional film layers in order to improve the resistance of the strand body to the cutting of a warp thread.
  • the material of the different film layers is selected according to the desired properties.
  • the individual foil layers are made 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, so that a composite material based on plastic arises.
  • the additional elements can be made of glass, ceramic or metal.
  • the plastic or composite material may be electrically conductive or have electrically conductive components in order to prevent electrostatic charging of the plastic strand.
  • In the operating position of the strand is made by the electrically conductive components an electrical connection to at least one electrically conductive heald support rail to allow electrical discharge via the heddle support rail of the heald and thereby prevent static charging of the heald body.
  • the entire strand body of the plastic strand consists of electrically conductive plastic or composite material or that only individual layers of a multilayer strand body are electrically conductive.
  • the electrically conductive layers or the stranded body as a whole may consist of composite material which contains a non-electrically conductive plastic matrix, which is connected to electrically conductive additional elements, for example of metal and / or graphite.
  • additional elements for example, long fibers and / or so-called whiskers and / or nanotubes or the like can serve.
  • the stranded body can be provided on its two flat sides, at least in sections and / or in the region of the thread eye, in each case on the outer surface with a metal layer. This reduces the wear of the strand body, especially in the contact areas with the warp threads.
  • the metal layers may be electrically connected to one another and, in the position of use of the strand, produce an electrical connection to at least one electrically conductive heddle support rail.
  • the heddle body may have a greater thickness in the at least one reinforcing section than in the sections adjoining the reinforcing section, which can be referred to as connection sections.
  • connection sections For example, the number of foil layers in the reinforcing section can be greater than in the connecting section.
  • it may be sufficient to produce the connecting portion only in one layer from a single foil layer, while this foil layer is reinforced in the at least one reinforcing section by at least one additional foil layer.
  • the heald is thereby very easily and the use of materials limited to the areas in which a reinforcement of the heald body is necessary. This is especially the area for the warp thread guide around the thread eye and / or the end areas around the end eyelets.
  • the thickness of the foil layers arranged one above the other in a reinforcing section can be different.
  • a central film layer for producing the tensile strength may have a greater thickness than an outer film layer arranged thereon, which protects the heddle body against the cutting of a thread.
  • the thickness of a film layer is measured at right angles to its plane of extent.
  • Exemplary embodiments of a heddle 10 with a heddle body 11 extending in a longitudinal direction L are shown in the drawing.
  • the heddle body 11 has a thread eye 12 for guiding a warp thread, which is arranged approximately centrally in the heddle body 11.
  • an end eye 13 is provided on the heddle body 11, which serves for arranging the heald on the heddle rails of a heddle shaft.
  • the end eyes 13 are shown in the embodiments described here as a ring-shaped closed O-shaped end eyelets. Alternatively, it is also possible to open the end eyes laterally at one point to form C-shaped or J-shaped end eyelets.
  • the heddle body has a multilayer structure at least along a reinforcing section 15 extending in the longitudinal direction L. At least within the reinforcing section 15, the heddle body 11 consists of two or more foil layers 16, which are laid flat on one another and connected to one another.
  • the film layers 16 are in particular materially connected to each other surface, for example glued.
  • the cohesive connection is preferably carried out over the entire surface along the entire contact surface between the adjoining film layers 16.
  • different film layers can already be produced by coextrusion and joined together in one step, so that a subsequent joining process such as gluing can be dispensed with.
  • the number of foil layers 16 in a reinforcing section 15 can vary.
  • the at least one inner film layer 16a is used in the embodiment to give the strand body 11 the necessary tensile strength.
  • the thickness of the at least one inner film layers 16a, the number of inner film layers 16a, the material, etc. is selected accordingly.
  • the entire heddle body 11 is made of plastic.
  • the various film layers and in particular the inner film layers 16a and the outer film layers 16b may consist of different plastics.
  • plastic matrix additional elements may for example consist of glass and / or ceramic and / or metal.
  • additional elements may be formed by short fibers (so-called whiskers) and / or spheres and / or other small bodies.
  • whiskers short fibers
  • spheres / or other small bodies.
  • a uniform material is used for each film layer.
  • the two outer film layers 16b serve to increase the wear resistance of the heddle body 11 with respect to the warp thread 19 and with respect to the heddle support rails. Therefore, in a preferred embodiment, at least three reinforcing sections 15 are provided. In these three reinforcing portions 15 are the two end loops 13 and the thread eye 12. Especially in the central reinforcing portion 15 of the heddle body 11 must be protected against being cut by the warp thread 19. In use position, the heald 10 is greatly accelerated and takes the guided in the thread eye 12 warp thread to this in the desired To give an opinion. Because of the large accelerations also relatively large forces between the warp thread 19 and the heald body 11 act.
  • the two outer film layers 16b are made around the thread eye 12 around of a plastic or composite material, which is particularly resistant to wear and a long service life of the heald 10 guaranteed.
  • a plastic or composite material which is particularly resistant to wear and a long service life of the heald 10 guaranteed.
  • polyethylene, polypropylene or polycarbonate can be used for the at least one inner film layer 16a.
  • polyamide can be used for the outer film layers 16b.
  • the plastics mentioned can also be used as a plastic matrix in a composite material.
  • film webs are provided, which are connected to each other flat and then form a multilayer web 17, as exemplified in Fig. 2 is shown.
  • the entire heddle body 11 is designed in several layers in its longitudinal direction L.
  • the number of film layers 16 is constant in the longitudinal direction L along the strand body. All foil layers 16 extend over the entire length of the heddle body 11.
  • the heald body 11 is subsequently separated out.
  • the heddle body 11 is punched out.
  • the stamping process can be done in one or more steps. It is possible initially to punch out the thread eye 12 and the end eyes 13 from the film web 17 in a first punching process. Then then the outer contour 18 can be punched out. Alternatively, the punching operations can also take place simultaneously. After punching gives a heald body 11 as a stamped part as he schematically in Fig. 1 is shown.
  • a central longitudinal section of the heddle body 11 can be plastically deformed in order to fix the thread eye plane with respect to the plane of the end loops 13 in the twisted position. This makes it possible to guide a warp thread 19 through the thread eye 12 without the warp thread 19 is acted upon by a torsional moment of the heald 10.
  • the film layers 16 of the heddle body 11 may be shorter in the longitudinal direction L than the heddle body 11 and may be arranged only in a reinforcing section 15. In the transverse direction Q transversely to the longitudinal direction L and in the plane of extent of the film layer 16, all film layers 16 extend over the entire width of the strand body 11.
  • the heald body 11 is made non-uniformly thick in the longitudinal direction L. It has a plurality of and, according to the example, three reinforcing sections 15 spaced apart in the longitudinal direction L. These are located in the two end regions at the end loops 13 and in the middle region at the thread eye 12.
  • the two end reinforcing sections 15 are connected to the central reinforcing section 15 via a respective connecting section 21.
  • the number of film layers 16 is less in the connecting portions 21 than in the reinforcing portions 15.
  • the connecting portions are formed by only one central or inner film layer 16a.
  • This inner film layer 16a extends through the entire strand body 11 in the longitudinal direction L.
  • the inner foil layer 16a is reinforced by at least one further foil layer and, according to the example, is sandwiched by two outer foil layers 16b arranged on opposite sides in each case.
  • the multilayer web 17 has only at the corresponding after the separation of the heddle body 11 the reinforcing sections 15 points over several layers of film. The view on the leading edge of such a film web 17 would be as shown in FIG Fig. 5 correspond.
  • the individual film layers 16 may be made different thickness depending on their function and / or depending on the material used.
  • a merely exemplary representation of different thicknesses of film layers 16 is shown in FIG Fig. 6 outlined.
  • a plurality of inner film layers 16a are provided, each having a thickness there. All the inner film layers 16a extend in the longitudinal direction L along the entire strand body 11. The total thickness di therefore results from the thickness da of an inner film layer 16a multiplied by the number of intended inner film layers 16a.
  • 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 allows a very flexible and cost-effective production of healds 10, the production can be 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.
  • a plurality of outer film layers 16b may be provided on both sides of the heddle body 11 respectively also a plurality of outer film layers 16b may be provided.
  • the invention relates to a method for producing a heddle 10 by providing an at least partially multi-layered film web and cutting or punching the strand body 11 from this multilayer film web.
  • the stranded body 11 is at least partially constructed in several layers.
  • the heddle body 11 has at least one reinforcing section 15, which consists of several foil layers 16.
  • at least one inner foil layer 16a extends in the longitudinal direction L along the entire heddle body 11.
  • This at least one inner foil layer 16a is in particular in the section around the thread eye 12 and / or in the section around the end loops 13 of the heddle body 11 with at least one and preferably two outer Foil layers 16b reinforced to form reinforcing portions 15.
  • the reinforcing sections 15 can, so to speak, be sandwiched from preferably at least three foil layers 16a, 16b. This results in a simple production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Looms (AREA)
  • Moulding By Coating Moulds (AREA)
  • Laminated Bodies (AREA)
EP16165424.9A 2011-03-28 2011-03-28 Verfahren zur herstellung einer weblitze Active EP3067448B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16165424.9A EP3067448B1 (de) 2011-03-28 2011-03-28 Verfahren zur herstellung einer weblitze

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11160055.7A EP2505702B2 (de) 2011-03-28 2011-03-28 Weblitze mit einem abschnittsweise aus mehreren Folienlagen gebildeten Litzenkörper
EP16165424.9A EP3067448B1 (de) 2011-03-28 2011-03-28 Verfahren zur herstellung einer weblitze

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP11160055.7A Division-Into EP2505702B2 (de) 2011-03-28 2011-03-28 Weblitze mit einem abschnittsweise aus mehreren Folienlagen gebildeten Litzenkörper
EP11160055.7A Division EP2505702B2 (de) 2011-03-28 2011-03-28 Weblitze mit einem abschnittsweise aus mehreren Folienlagen gebildeten Litzenkörper

Publications (2)

Publication Number Publication Date
EP3067448A1 EP3067448A1 (de) 2016-09-14
EP3067448B1 true EP3067448B1 (de) 2019-08-07

Family

ID=44767470

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11160055.7A Active EP2505702B2 (de) 2011-03-28 2011-03-28 Weblitze mit einem abschnittsweise aus mehreren Folienlagen gebildeten Litzenkörper
EP16165424.9A Active EP3067448B1 (de) 2011-03-28 2011-03-28 Verfahren zur herstellung einer weblitze

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11160055.7A Active EP2505702B2 (de) 2011-03-28 2011-03-28 Weblitze mit einem abschnittsweise aus mehreren Folienlagen gebildeten Litzenkörper

Country Status (4)

Country Link
EP (2) EP2505702B2 (ko)
JP (2) JP6014294B2 (ko)
KR (1) KR101988892B1 (ko)
CN (1) CN102704136B (ko)

Families Citing this family (2)

* 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

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4714211Y1 (ko) * 1968-07-30 1972-05-23
CH579161A5 (ko) 1974-06-10 1976-08-31 Grob & Co Ag
CH601532A5 (ko) 1977-02-28 1978-07-14 Grob & Co Ag
JPS5455945U (ko) * 1977-09-21 1979-04-18
JPS54116657U (ko) * 1978-01-27 1979-08-15
JPS59137537A (ja) * 1983-01-19 1984-08-07 伊藤　晃 ヘルド
JPS59169378U (ja) * 1983-04-27 1984-11-13 金井　宏之 フラツトヘルド
US5005608A (en) 1990-01-31 1991-04-09 Asten Group, Inc. Split heddle with superimposed blades with aligned apertures
US5348055A (en) * 1993-05-06 1994-09-20 Steel Heddle Mfg. Co. Heddle eyelet structure
DE4336362C1 (de) 1993-10-25 1994-10-13 Grob & Co Ag Fadenauge für Weblitze
KR100537052B1 (ko) * 2004-04-19 2005-12-16 중소기업진흥공단 섬유강화 플라스틱을 이용한 저소음 직기용 종광
CN1796627A (zh) * 2004-12-28 2006-07-05 钱武宁 钢丝综及其制造方法
DE102005030632B4 (de) * 2005-07-01 2009-07-30 Groz-Beckert Kg Fadenschonende Weblitze
DE502005005422D1 (de) * 2005-12-08 2008-10-30 Groz Beckert Kg Weblitze für bandförmige Kettfäden
EP1795636B1 (de) 2005-12-08 2010-03-24 Groz-Beckert KG Weblitze für bandartige Kettfäden
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 (de) * 2009-02-26 2011-08-31 Groz-Beckert KG Kunststoff-Weblitze

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
JP6316894B2 (ja) 2018-04-25
CN102704136A (zh) 2012-10-03
CN102704136B (zh) 2015-09-30
JP2017036536A (ja) 2017-02-16
EP2505702B1 (de) 2016-12-14
KR20120110016A (ko) 2012-10-09
EP3067448A1 (de) 2016-09-14
EP2505702A1 (de) 2012-10-03
JP6014294B2 (ja) 2016-10-25
EP2505702B2 (de) 2023-05-17
JP2012207355A (ja) 2012-10-25
KR101988892B1 (ko) 2019-06-14

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