EP0947620B2 - Verfahren zur Herstellung einer Weblitze, Weblitze und Fachbildungsvorrichtung für eine Webmaschine - Google Patents

Verfahren zur Herstellung einer Weblitze, Weblitze und Fachbildungsvorrichtung für eine Webmaschine Download PDF

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Publication number
EP0947620B2
EP0947620B2 EP99420081A EP99420081A EP0947620B2 EP 0947620 B2 EP0947620 B2 EP 0947620B2 EP 99420081 A EP99420081 A EP 99420081A EP 99420081 A EP99420081 A EP 99420081A EP 0947620 B2 EP0947620 B2 EP 0947620B2
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EP
European Patent Office
Prior art keywords
notch
eye
edges
eyelet
welding
Prior art date
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Expired - Lifetime
Application number
EP99420081A
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English (en)
French (fr)
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EP0947620A1 (de
EP0947620B1 (de
Inventor
Dario Bassi
Patrick Vessella
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.)
Staeubli Lyon SA
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Staeubli Lyon SA
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Application filed by Staeubli Lyon SA filed Critical Staeubli Lyon SA
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Publication of EP0947620B1 publication Critical patent/EP0947620B1/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
    • 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

Definitions

  • the invention relates to a method of manufacturing a loom for Jacquard loom harness.
  • each hook is associated with an arcade to which several cords are connected, all of these cords constituting the harness of the Jacquard mechanism.
  • each cord is hooked to the upper end of a bar which carries a grommet for passing a warp.
  • the healds are usually formed of metal rods.
  • it is known to form a rail by joining two rods or metal strands which are then welded or brazed with tin over most of their length and nickel-plated to avoid possible oxidation of tin to induce dirt from the warp threads.
  • the method of assembly of the bar by welding of the metal rods and nickel plating must be made with the utmost care, otherwise the bar may have surface irregularities may injure or sever, the neighboring warp son.
  • this assembly is not the most careful, the bar does not have sufficient strength to perform its function is to oscillate vertically, exerting a tensile force on a warp, several hundred times by minute.
  • an eyelet is disposed in an intermediate portion of the bar after the two strands that constitute it have been separated from one another.
  • the height over which the two strands are spaced from each other can not be precisely controlled, so that the housing provided to receive a guide eyelet is too large in a direction parallel to the main axis of the smooth, to the point that the eyelet is badly or not held in position between the threads.
  • the eyelet must be brazed between the rods or strands to hold in place and withstand the reaction forces of the wires, which can generate variations in thickness or the formation of irregularities or "scratches" near the point passage of the wires. This can also have the effect of using the son or even lead to their break.
  • the smooth surfaces must be polished after placement of the eyelets, such an operation can be performed only manually given the usual dimensions of the rails.
  • the slats of the prior art are not entirely satisfactory from the technical point of view and are of relatively high manufacturing cost, in particular because of the finishing operations, which has a significant effect on the total cost of a crowd training device, including Jacquard type, which can count up to 10 000 smooth or more.
  • DE-A-1950903 teaches forming a slot in a steel strip, by means of a spacer tool, for the purpose of forming a frame rail.
  • the band is provided with a stamping impression, then the band is shaped by means of the tool, so as to form a slot which is expanded by deformation of the material of which the band is made. .
  • the tool is fitted with the tool, an eyelet, before its subsequent fixing, for example by welding.
  • the invention more particularly intends to remedy by proposing a method of manufacturing a smoother more economical and more reliable than those of the prior art.
  • the invention relates to a method of manufacturing a bar according to claim 1.
  • the invention it is not necessary to use two juxtaposed rods of tin, because the receiving housing of a guide eyelet is formed in the single strand of wire that constitutes the smooth.
  • the control of the dimensions of the notch can be carried out accurately according to the embodiment of this notch, which facilitates the establishment and maintenance of the eyelet, while it is no longer necessary to use a method of attachment that may result in the formation of surface irregularities of the stringer. The wear risks of the warp yarns are thus substantially reduced.
  • the notch is made in the single-strand filamentary element by cutting by means of a laser beam or a jet of water, a high precision is obtained in the dimensions of this notch, whereas high production rates can be obtained. to be reached.
  • the method of the invention consists in fixing the eyelet in the notch by gluing, tinning, welding, in particular laser welding, or crimping.
  • laser is welded an external surface of the eyelet with the edges of the notch. In all cases, the risks of abrasive wear of the warp yarns are very significantly reduced.
  • the eyelet has a periphery of thickness less than or equal to that of the monofibrous rod. This avoids any danger of interference in the eyelets between neighboring rods, during rotations of the rails around their respective longitudinal axes, insofar as the eyelets do not form angular projection outside the smooth.
  • the eyelet has an outer surface adapted to the conformation of the spaced edges of the notch. This aspect of the invention allows to consider fixing the eyelet in the notch by the methods mentioned above, which avoids deburring.
  • the eyelet has an outer surface spindle-shaped or generally elliptical.
  • the eyelet may be welded punctually, at its outer surface, on the edges of the notch.
  • the figure 1 represents, very schematically, a Jacquard machine 2 of a loom.
  • This mechanism controls several arches, of which only one, 4, has been shown which passes through a guide board 3.
  • the lower end of this arch is associated with several cords 6.
  • the set of cords 6 forms the harness of the loom .
  • Each bead 6 is hooked to the upper end of a rail 8 for controlling the position of a warp wire 10.
  • Each rail is fixed, by its lower part, to a spring 12 secured to a fixed anchor frame 14 thanks to a wired element 16.
  • the central part of the rail 8 visible at figure 2 corresponds to detail II at the figure 1 .
  • Each heddle 8 is formed of a threadlike element 20, the section 20 has is elongated or flattened.
  • the element 20 consists of a single stainless steel rod whose width l is about 3 mm while its thickness e is about 1 mm. In practice, the width l can be between about 1 and about 5 mm, while the thickness e is between about 0.3 and about 1.2 mm. In some cases, lower ratings may be used.
  • the length of the element 20 depends on the configuration of the loom. It is generally between about 300 and about 400 mm.
  • An eyelet 22 for guiding a warp 10, visible at the figure 1 is in place in a notch 24 formed in a central part of the element 20.
  • the method of manufacturing the bar 8 is explained with reference to Figures 3 to 6 .
  • the element 20 is a flattened rod.
  • the stage of figure 4 forming, thanks to a cutting laser beam, the notch 24 whose dimensions can be determined with very high accuracy given the cutting mode used.
  • the use of a laser beam makes it possible to dispense with the use of a mechanical system for forming a notch, such a mechanical system not being, in practice, not precise enough to allow the creation of a cut in a rail the dimensions of which have been indicated above while it is necessarily subject to wear detrimental to its accuracy.
  • the notch 24 has a length L ', parallel to the largest axis XX' of the heald 8, between about 8 and about 15 mm and a width l ', perpendicular to the axis XX', of the order of 0.1 to 0.3 mm. In some cases, lower ratings may be obtained.
  • the notch 24 is formed by being perpendicular to the two largest faces 20b and 20c of the element 20.
  • the cutting operation could also be carried out, with the same advantages, by a water jet under pressure.
  • the generated deformation of the edges 24 a and 24 b is plastic, the edges 24 a and 24 b remain in the separated position shown in figure 5 .
  • the width l 'of the notch 24 is then substantially increased to about 4 mm. Of course, the width of the obtained depends on the width l of the element 20 and the length L 'of the notch 24.
  • an eyelet 22 whose outer surface 22 a is adapted to cooperate with the edges 24 a and 24 b of the notch 24.
  • the width l is chosen to be slightly less than that of the eyelet 22, for example from 0.1 to 0.3 mm, so that the establishment of the eyelet 22 takes place thanks to a small additional deformation of the arms 24 a and 24 b .
  • the eyelet 22 has a spindle shape that corresponds substantially to the shape of the notch 24 shown in FIG. figure 5 , eyelet 22 being elongated in the direction of the notch 24, that is to say XX '.
  • the eyelet 22 is then immobilized in the notch 24 by cooperation of forms, that is to say by wedging.
  • the final immobilization is obtained by four welding points 26 distributed over the area of contact between the eyelet 22 and the edges 24 a and 24 b, that is to say the surface 22 a.
  • the number and position of the weld points 26 results from a choice of the practitioner according to the selected materials and dimensions.
  • the welding of the elements 20 and 24 is performed on one side of the rail 20, by means of a YAG laser, by localized fusion of the elements 20 and 22. Of course, the welding could be performed on both sides 20b and 20c. c the smooth, in which case the number of weld points is doubled.
  • a crimping operation may be provided to reinforce the anchoring of the eyelet 22 within the notch 24.
  • the eyelet 22 can also be glued or tinned inside the corresponding notch.
  • the element 20 is made of stainless steel provides a nickel plating operation, which allows a reduction in the cost price of the smooth relative to known devices and avoids irregularities.
  • the eyelet 22 has, at its outer peripheral surface 22 has a thickness substantially equal to the thickness e of the rail 20.
  • the thickness of the periphery 22 has the eyelet 22 is less than or equal to the thickness e , so that it can be installed without protruding angularly with respect to the faces 20b and 20c .
  • the eyelet 22 has been shown flat. However, it can be bulging, in which case it is thicker than the element 20 in its central part.
  • the invention has been described with a smooth section uniformly flattened. However, it is applicable with other types of solid single-strand, including circular section, possibly flattened by crushing in the area intended to receive the eyelet.

Landscapes

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

Claims (3)

  1. Verfahren zur Herstellung einer Helfe für einen Harnisch eines Jacquard-Webstuhls, die dazu dient, mit einem ersten Ende an eine Platinenschnur des Harnischs und mit einem zweiten Ende an ein elastisches Rückstellmittel angehängt zu werden, dadurch gekennzeichnet, dass es darin besteht,
    - einen Einschnitt (24) in ein fadenförmiges einsträngiges Element (20) aus Edelstahl durch Schneiden mittels eines Laserstrahls oder eines Wasserstrahl einzuarbeiten, der im Wesentlichen parallel zur Längsachse (XX') des fadenförmigen Elementes ist;
    - die Ränder (24a, 24b) des Einschnitts plastisch zu verformen, indem sie voneinander über eine Breite (l') leicht kleiner als die einer Öse (22) auseinander gezogen werden, wobei die Außenfläche (22a) der Öse angepasst ist, mit den Rändern zusammenzuarbeiten, sobald diese auseinander gezogen sind und die Öse zur Führung eines Kettfadens (10) dient;
    - zwischen die auseinander gezogenen Ränder die Öse (22) über eine kleine zusätzliche Verformung der Ränder anzuordnen derart, dass die Öse in dem Einschnitt durch Formenschluss und Klemmung festgelegt wird und
    - die Öse in dem Einschnitt dauerhaft zu befestigen.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnete, dass es darin besteht, die Öse (22) in dem Einschnitt (24) durch Kleben, Verzinnen, Schweißen, insbesondere Laserschweißen oder eine Quetschverbindung zu befestigen.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass es darin besteht, punktuell eine Außenfläche (22a) der Öse (22) mit den Rändern (24a, 24b) des Einschnittes (24) durch Laser (26) zu verschweißen.
EP99420081A 1998-03-31 1999-03-30 Verfahren zur Herstellung einer Weblitze, Weblitze und Fachbildungsvorrichtung für eine Webmaschine Expired - Lifetime EP0947620B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9804264A FR2776676B1 (fr) 1998-03-31 1998-03-31 Procede de fabrication d'une lisse, lisse et dispositif de formation de la foule pour metier a tisser
FR9804264 1998-03-31

Publications (3)

Publication Number Publication Date
EP0947620A1 EP0947620A1 (de) 1999-10-06
EP0947620B1 EP0947620B1 (de) 2003-03-12
EP0947620B2 true EP0947620B2 (de) 2008-07-09

Family

ID=9524911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99420081A Expired - Lifetime EP0947620B2 (de) 1998-03-31 1999-03-30 Verfahren zur Herstellung einer Weblitze, Weblitze und Fachbildungsvorrichtung für eine Webmaschine

Country Status (6)

Country Link
EP (1) EP0947620B2 (de)
JP (1) JPH11315441A (de)
CN (1) CN1128256C (de)
DE (1) DE69905782T2 (de)
ES (1) ES2189368T3 (de)
FR (1) FR2776676B1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100356274B1 (ko) * 2000-06-07 2002-10-12 유재환 제직기용 종광 제조방법과 제조장치 및 그 종광
CH695240A5 (de) * 2001-02-28 2006-02-15 Braecker Ag Weblitze und Verfahren zur Herstellung einer Weblitze.
FR2891282B1 (fr) * 2005-09-27 2007-11-16 Staubli Lyon Sa Procede de fabrication d'une lisse, lisse de mecanisme de formation de la foule et metier a tisser incorporant une telle lisse.
EP1908863B1 (de) * 2006-10-06 2009-04-08 Groz-Beckert KG Weblitze für Jacquardwebmaschine
EP2166138A1 (de) * 2008-09-23 2010-03-24 Groz-Beckert KG Jacquardlitze mit geprägtem Fadenaugenbereich
BE1018304A3 (nl) 2008-10-13 2010-08-03 Wiele Michel Van De Nv Hevel.
BE1018732A3 (nl) * 2009-04-24 2011-07-05 Wiele Michel Van De Nv Drie-dimensionaal heveloog.
CN101649521B (zh) * 2009-09-23 2011-05-04 潘伟健 大提花织机的一体式综丝及其制造方法
EP2505700B1 (de) * 2011-03-28 2014-04-30 Groz-Beckert KG Weblitze mit einem Fadenauge zur verbesserten Aufnahme des Kettfadens
CN104153090B (zh) * 2014-08-13 2016-04-06 朱永春 一种通丝与综丝杆的连接设备的拉线装置
CN104153087B (zh) * 2014-08-13 2015-06-10 朱永春 一种通丝与综丝杆的连接设备的拉紧装置
DE102016002561B4 (de) 2015-10-19 2018-10-31 Steintex Walter vom Stein KG Verfahren zum Herstellen von Weblitzen und damit hergestelltes Erzeugnis
EP3591104B1 (de) * 2018-07-05 2021-03-10 Groz-Beckert KG Weblitze

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1950903A1 (de) † 1968-10-18 1970-04-30 Braecker Ag Verfahren zum Herstellen von Weblitzen
CH573993A5 (de) † 1974-04-09 1976-03-31 Staeubli Ag
WO1980000719A1 (fr) † 1978-09-26 1980-04-17 Braecker Ag Lisse
EP0403429A1 (de) † 1989-06-12 1990-12-19 Sulzer Innotec Ag Stabförmiges Fadenführungselement für Textilmaschinen, insbesondere Weblitze

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US403429A (en) * 1889-05-14 Leonard d
US2132245A (en) * 1937-09-08 1938-10-04 Vernon E Royle Heddle for circular looms
DE1147900B (de) * 1960-08-12 1963-04-25 Zellweger A G App Und Maschine Flachstahl-Webelitze
US4355665A (en) * 1980-05-26 1982-10-26 Bracker Ag Heddle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1950903A1 (de) † 1968-10-18 1970-04-30 Braecker Ag Verfahren zum Herstellen von Weblitzen
CH573993A5 (de) † 1974-04-09 1976-03-31 Staeubli Ag
WO1980000719A1 (fr) † 1978-09-26 1980-04-17 Braecker Ag Lisse
EP0403429A1 (de) † 1989-06-12 1990-12-19 Sulzer Innotec Ag Stabförmiges Fadenführungselement für Textilmaschinen, insbesondere Weblitze

Also Published As

Publication number Publication date
CN1230609A (zh) 1999-10-06
FR2776676A1 (fr) 1999-10-01
ES2189368T3 (es) 2003-07-01
DE69905782T2 (de) 2004-04-08
JPH11315441A (ja) 1999-11-16
EP0947620A1 (de) 1999-10-06
FR2776676B1 (fr) 2000-05-26
EP0947620B1 (de) 2003-03-12
DE69905782D1 (de) 2003-04-17
CN1128256C (zh) 2003-11-19

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