EP1252944B1 - Lisse et procédé de fabrication d'une lisse - Google Patents

Lisse et procédé de fabrication d'une lisse Download PDF

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Publication number
EP1252944B1
EP1252944B1 EP02002314A EP02002314A EP1252944B1 EP 1252944 B1 EP1252944 B1 EP 1252944B1 EP 02002314 A EP02002314 A EP 02002314A EP 02002314 A EP02002314 A EP 02002314A EP 1252944 B1 EP1252944 B1 EP 1252944B1
Authority
EP
European Patent Office
Prior art keywords
blank
profile
loop
heddle
narrow point
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.)
Revoked
Application number
EP02002314A
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German (de)
English (en)
Other versions
EP1252944A2 (fr
EP1252944A3 (fr
Inventor
Ernst Tobler
Jörg KÄGI
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
Braecker AG
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 Braecker AG filed Critical Braecker AG
Publication of EP1252944A2 publication Critical patent/EP1252944A2/fr
Publication of EP1252944A3 publication Critical patent/EP1252944A3/fr
Application granted granted Critical
Publication of EP1252944B1 publication Critical patent/EP1252944B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • D03C9/024—Eyelets
    • 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
    • D03C9/04—Metal healds

Definitions

  • the invention relates to a heddle according to claim 1, a method for producing a heddle according to claim 13, and the use of a blank for producing a heddle according to claim 15.
  • Healds in weaving machines have the task of raising and lowering warp threads that run through the Litzenstoffaugen to shedding.
  • heddles made of yarn, metal and plastic are known.
  • metallic healds the thread eye is formed either by piercing a brazed double wire or by punching from a flat rolled round wire or a broadband.
  • the opening formed by piercing or punching or eyelet forms a thread eye through which the warp thread is guided.
  • the thread eye is exposed to high mechanical stress due to the continuous warp thread. It must be as low-wear as possible and must not rub the passing warp thread.
  • an additional thread eye is often soldered into the eyelet, which is also referred to as Maillon.
  • the requirements for a high mechanical strength are most likely met by healds, which are made of metal, at least in the area of the thread eye.
  • the resulting slot also has sharp edges that make an additional thread eye indispensable, but make its insertion difficult.
  • the widening of the slot in the band-shaped, in profile rectangular steel band to an eyelet can also lead to overuse of the material, in particular in the region of the slot ends.
  • DE 214133 discloses a strand made of a framework wire having an oblong oval cross-section constricted at the center. The wire is split in the middle and soldered a Maillon.
  • the invention is therefore based on the object to provide a heald available in which the above-mentioned problems of the prior art are avoided.
  • the heddle should be particularly low-effort and environmentally friendly to produce.
  • the object is achieved by a heddle with the features of claim 1.
  • the object is further achieved by a method for producing a heddle with the features of claim 13, and by use of a blank for producing a heald with the features of claim 15.
  • a one-piece blank which has a profile which has at least two thickenings and a narrow point arranged therebetween.
  • the profile of the blank has the shape of a triangle in the region of the narrow point with a rounded or flattened tip and with an opening angle between 20 and 120 °.
  • the thickness d 2 of the blank in the region of the narrow point is preferably between 0.02 and 0.2 mm.
  • the thickness d 1 in the region of the thickenings is preferably 2 to 8 times the thickness d 2 and is preferably between 0.3 and 1.2 mm.
  • the width b 1 of the blank is preferably between 0.5 and 3.0 mm.
  • the blank is in particular an endless belt, which has the profile described over the entire length of the tape. He is referred to below as a splittable profile wire.
  • the inventive heald the blank is separated along the narrow point in a region of a predetermined length into two single strands and widened to form an eyelet.
  • healds of different lengths and different ⁇ sengrösse.
  • the piercing or cutting a slot for the production of the eyelet is possible with little effort.
  • the individual strands in the region of the slot have substantially rounded edges.
  • the resulting eyelet can thus be prepared in a simple manner for receiving the warp thread.
  • the separation to form a slot and the widening of the slot can be done in one operation in a common processing station.
  • the blank is a one-piece, profiled, splittable wire.
  • This is preferably produced by rolling, drawing or cutting. It preferably consists of spring-hard inox material or cold-drawn spring steel. Its strength is 900 to 2500 N / mm 2 , preferably 1100 to 1500 N / mm 2 . Due to this high tensile strength, the necessary stability and fatigue strength of the inventive heddle is guaranteed. The strength is chosen depending on the material so that the profile can be split and widened without tearing open the entire length of the strand. The elongation at break is chosen so that the molding of end eyelets is possible.
  • the heald for attachment in the harness straight ends for a hose attachment or molded end eyelets.
  • These are realized by appropriate material conversion, end splitting or additional attachment of thread eyes.
  • the flared eyelet can be used directly as a thread eye.
  • an additional thread eye is preferably inserted into the eyelet.
  • This preferably has an increased wear resistance than the blank itself and preferably also a correspondingly prepared surface, which is polished, for example.
  • this additional thread eye along its outer contour has a notch, which is adapted to the shape of the individual strands.
  • the additional thread eye can be positively inserted into the eyelet, so that in principle no further fastening means are more necessary.
  • the manufacturing process is thereby simplified over known methods in which the thread eye is soldered.
  • the additional thread eye can also be attached by gluing, brazing, soldering, foil soldering, laser welding, pressure welding, ultrasonic welding or embossing in the eyelet.
  • the split location i. the eyelet mechanically or chemically polished.
  • the eyelet mechanically or chemically polished.
  • An additionally inserted thread eye preferably has a correspondingly polished surface.
  • the profile of the blank is preferably substantially dumbbell, double lobe or eight shaped. As a result, an easy cleavage is realized.
  • FIGS. 1-5 show various profile shapes of blanks which can be used to produce a heddle according to the invention. Same functional areas are designated by the same reference numerals.
  • the profile according to Fig. 1 is substantially dumbbell or 8-shaped. It is symmetrical both to a transverse axis 11 and to a central axis 12 perpendicular thereto.
  • the profile 1 has two club-like lateral thickenings 4a, 4b, between which a narrow point 2 is formed.
  • the narrow point 2 is formed during the production process of the blank in that the blank is provided over its entire length with each other mirror-symmetrical to the transverse axis 11 opposite notches 3a, 3b.
  • the blank 1 has a width b1 of 0.4 to 2.6 mm, preferably 0.6 mm. In a direction perpendicular thereto, it has a maximum thickness d1, which is about two-thirds of the width b1, here 0.4 mm.
  • the minimum thickness d2 in the region of the narrow point 2 is about one third of the width b1, here preferably 0.2 mm.
  • the profile has in the region of the thickening 4a, 4b and in the region of the notches 3a, 3b rounded shape.
  • the radius of curvature R1 of the profile in the region of the narrow point 2 is between 0.01 and 0.25 mm, preferably 0.05 mm.
  • the profile wire for the inventive production of a heald is partially separated.
  • the resulting slot is widened to an eyelet, which either itself forms the thread eye or another thread eye (Maillon) receives.
  • FIG. 2 shows a further example of a profile of a blank 1.
  • the narrow point 2 between the two thickenings 4a, 4b here has a reduced thickness d2 of about one-sixth of the width b1 of the profile compared to the example of FIG.
  • Half the opening angle ⁇ of the notches 3a, 3b is about 30 °.
  • the radius of curvature R1 of the notches 3a, 3b is about 0.05 mm.
  • FIG. 3 shows a further example of a profiled wire according to the invention with notches triangular or roof-shaped in cross-section 3a, 3b.
  • the width b1 of the profile 1 is between 0.6 and 2.6 mm and is here preferably 0.8 mm.
  • the narrow point 2 formed by the notches 3a, 3b between the two thickenings 4a and 4b consists of a substantially straight piece of material of width b2.
  • the width b2 is between 0.05 and 0.5 mm and here is 0.1 mm.
  • the thickness d2 of the narrow point 2 in a direction perpendicular thereto is preferably between 0.1 and 0.5 mm and is here, for example, 0.1 mm.
  • the thickness D1 of the entire profile 1, measured at the point of greatest extent, is preferably between 0.25 and 1.3 mm and is here 0.45 mm.
  • the opening angle ⁇ of the notches 3a, 3b is between 60 and 120 ° and is here about 90 °.
  • Fig. 4 shows a comparison with FIG. 3 slightly modified profile with rounded notches 3a, 3b.
  • the radius of curvature R1 of the notches here is about 0.12 mm and is in principle preferably between 0.05 and 0.5 mm.
  • the opening angle ⁇ is substantially 90 °.
  • Fig. 5 shows another dumbbell or 8-shaped profile of a blank according to the invention.
  • the width of the profile b1 is about 0.6 mm, the thickness d1 of the profile about two-thirds thereof, here 0.4 mm, and the thickness d2 of the narrow point 2 about one-sixth, here 0.1 mm.
  • the opening angle ⁇ of the notches 3a, 3b is approximately 90 °.
  • the radius of curvature R1 of the profile in the region of the narrow point 2 is approximately 0.05 mm.
  • the radius of curvature R2 of the profile in the region of the thickenings 4a, 4b is approximately 0.1 mm.
  • the profile according to FIG. 5 has a cross-sectional area of approximately 0.16 mm 2 .
  • the profiles shown in FIGS. 1-5 can be produced by cold drawing, rolling or cutting a wire made of spring-resistant inox or spring steel.
  • the fissile profile wire produced in this way serves as an endless belt as a starting material for the production of healds according to the invention.
  • other components having an eyelet can be made in a simple manner from such a wire.
  • the heddle shows an example of a heddle according to the invention with a thread eye 7 inserted.
  • the heddle consists of a blank 1, which is a splittable profile wire with a profile according to one of FIGS. 1-5 or 6c.
  • the profile wire has two longitudinally strand-like thickenings 4a, 4b which extend parallel to one another in the end regions 1a, 1b of the blank 1. In these end regions 1a, 1b, they are connected to one another via a narrow point 2. In the eyelet 6, the narrow point is separated over a certain length.
  • the blank 1 is split in this area in two single strands 5a, 5b. These are pulled apart to form an eyelet 6 in the transverse direction.
  • In the eyelet 6 is a thread eye 7 inserted positively.
  • the ends 8 of the eyelet 6 and the intermediate region between the thread eye 7 and the individual strands 5a, 5b are filled with a filler.
  • FIGs. 6b and 6c show sections through a strand along the line 1-1 in Fig. 6a.
  • Fig. 6b illustrates the case that the blank 1 is a soldered double wire according to the prior art. This consists of two round wires 9a, 9b, which are aligned parallel to each other and are connected with solder 10 over its entire length. Such a double wire has the disadvantages described above.
  • FIG. 6c shows the further development according to the invention, in which a one-piece splittable profile wire is used as the blank 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
  • Wire Processing (AREA)
  • Air Bags (AREA)

Claims (15)

  1. Lisse, composée d'une ébauche en une pièce (1) avec un profil, qui comporte au moins deux surépaisseurs (4a, 4b) et une zone étroite (2) disposée entre celles-ci, dans laquelle l'ébauche (1) est séparée en deux barres individuelles (5a, 5b) le long de la zone étroite (2) et est écartée en formant un oeillet (6), caractérisée en ce que le profil présente, dans la région de la zone étroite (2), la forme d'un triangle avec un sommet arrondi ou aplati et avec un angle d'ouverture (2α, β) compris entre 20 et 120°, et en ce que les barres individuelles présentent à l'état séparé, dans la région de l'oeillet (6), des arêtes essentiellement arrondies.
  2. Lisse selon la revendication 1, caractérisée en ce que le profil de l'ébauche (1) est essentiellement en forme de lobes, de haltères ou de 8.
  3. Lisse selon la revendication 1 ou 2, caractérisée en ce que l'oeillet (6) présente une surface polie et forme un oeillet de lisse (7).
  4. Lisse selon la revendication 1 ou 2, caractérisée par un oeillet de lisse supplémentaire (7), qui est disposé dans l'oeillet (6).
  5. Lisse selon la revendication 4, caractérisée en ce que l'oeillet de lisse (7) présente le long de son contour extérieur une entaille, qui est adaptée à la forme des barres individuelles (5a, 5b) pour la pose en complémentarité de forme dans l'oeillet (6).
  6. Lisse selon la revendication 4 ou 5, caractérisée en ce que l'oeillet de lisse (7) présente une surface polie.
  7. Lisse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ébauche (1) est un fil profilé séparable.
  8. Lisse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ébauche (1) est un fil tréfilé à froid ou laminé ou coupé, qui se compose de préférence de matière inoxydable dure à ressort ou de fil dur à ressort tréfilé à froid.
  9. Lisse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ébauche (1) présente une résistance de 900 à 2500 N/mm2, de préférence de 1100 à 1500 N/mm2.
  10. Lisse selon l'une quelconque des revendications précédentes, caractérisée par des extrémités rectilignes (1a, 1b) pour la fixation d'un tuyau flexible ou d'oeillets d'extrémité façonnés.
  11. Lisse selon l'une quelconque des revendications précédentes, caractérisée en ce que le profil présente, dans la région de la zone étroite, un rayon de courbure (R1) compris entre 0,01 et 0,5 mm.
  12. Lisse selon l'une quelconque des revendications précédentes, caractérisée en ce que le profil est configuré en forme de toit dans la région de la zone étroite (2), de telle manière que la largeur (b2) de la zone étroite soit comprise entre 0,05 et 0,5 mm et que la largeur (b1) du profil soit comprise entre 0,6 et 2, 6 mm.
  13. Procédé de fabrication d'une lisse, comportant les étapes suivantes:
    a) préparer une ébauche (1) en une pièce avec un profil, qui comporte au moins deux surépaisseurs (4a, 4b) et une zone étroite (2) disposée entre celles-ci,
    b) séparer l'ébauche (1) en direction longitudinale, sur une longueur prédéterminée le long de la zone étroite (2), en deux barres individuelles (5a, 5b),
    c) écarter l'ébauche (1) en un oeillet (6) dans la région séparée,
    caractérisé en ce que
    d) le profil de l'ébauche en une pièce présente, dans la région de la zone étroite (2), la forme d'un triangle avec un sommet arrondi ou aplati et avec un angle d'ouverture (2α, β) compris entre 20 et 120°;
    e) l'ébauche est séparée de telle manière que les barres individuelles (5a, 5b) présentent des arêtes essentiellement arrondies dans la région de l'oeillet (6).
  14. Procédé selon la revendication 13, caractérisé en ce qu'un oeillet de lisse supplémentaire (7) est posé dans l'oeillet (6) ou est fixé dans la région de l'oeillet (6), de préférence par calage, collage, brasage, soudage ou enfoncement de l'oeillet de lisse (7) dans l'oeillet (6).
  15. Utilisation d'une ébauche (1) en une pièce avec un profil qui comporte au moins deux surépaisseurs (4a, 4b) et une zone étroite (2) disposée entre celles-ci, pour la fabrication d'une lisse, qui est séparée en deux barres individuelles (5a, 5b) sur une longueur prédéterminée le long de la zone étroite (2) et est écartée en formant un oeillet (6), caractérisée en ce que le profil de l'ébauche en une pièce présente, dans la région de la zone étroite (2), la forme d'un triangle avec un sommet arrondi ou aplati et avec un angle d'ouverture (2α, β) compris entre 20 et 120°, de telle manière qu'après la séparation, les barres individuelles (5a, 5b) présentent des arêtes essentiellement arrondies dans la région de l'oeillet (6).
EP02002314A 2001-02-28 2002-01-31 Lisse et procédé de fabrication d'une lisse Revoked EP1252944B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00370/01A CH695240A5 (de) 2001-02-28 2001-02-28 Weblitze und Verfahren zur Herstellung einer Weblitze.
CH3702001 2001-02-28

Publications (3)

Publication Number Publication Date
EP1252944A2 EP1252944A2 (fr) 2002-10-30
EP1252944A3 EP1252944A3 (fr) 2002-11-20
EP1252944B1 true EP1252944B1 (fr) 2007-06-06

Family

ID=4513439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02002314A Revoked EP1252944B1 (fr) 2001-02-28 2002-01-31 Lisse et procédé de fabrication d'une lisse

Country Status (4)

Country Link
EP (1) EP1252944B1 (fr)
JP (2) JP2002302842A (fr)
CH (1) CH695240A5 (fr)
DE (1) DE50210255D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10309260A1 (de) * 2003-03-03 2004-09-16 Berger Gmbh Verfahren zur Herstellung eines Gewebes und Weblitze, insbesondere zur Verwendung hierbei
EP1908863B1 (fr) * 2006-10-06 2009-04-08 Groz-Beckert KG Lisse pour métier à tisser Jacquard
EP2166138A1 (fr) 2008-09-23 2010-03-24 Groz-Beckert KG Lisse Jacquard dotée d'une zone d'oeil gaufré
EP2224046B1 (fr) * 2009-02-26 2011-08-31 Groz-Beckert KG Lisse en matière plastique
EP3591104B1 (fr) * 2018-07-05 2021-03-10 Groz-Beckert KG Lisse

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE214133C (de) * 1908-10-14 1909-10-11 Weblitze
US3960182A (en) * 1975-04-07 1976-06-01 Staeubli, Ltd. Heddles for weaving machines having heddle frame bars for several heddles, which bars are moved by a shed-forming device
JPS5769873U (fr) * 1980-10-13 1982-04-27
CH692587A5 (de) * 1997-09-16 2002-08-15 Braecker Ag Stabförmiges Fadenführungselement für Textilmaschinen, insbesondere Weblitze, und Verfahren zur Herstellung desselben.
FR2776676B1 (fr) * 1998-03-31 2000-05-26 Staubli Lyon Procede de fabrication d'une lisse, lisse et dispositif de formation de la foule pour metier a tisser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CH695240A5 (de) 2006-02-15
JP2002302842A (ja) 2002-10-18
EP1252944A2 (fr) 2002-10-30
DE50210255D1 (de) 2007-07-19
JP2008196106A (ja) 2008-08-28
JP4542168B2 (ja) 2010-09-08
EP1252944A3 (fr) 2002-11-20

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