EP0947620A1 - 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
EP0947620A1
EP0947620A1 EP99420081A EP99420081A EP0947620A1 EP 0947620 A1 EP0947620 A1 EP 0947620A1 EP 99420081 A EP99420081 A EP 99420081A EP 99420081 A EP99420081 A EP 99420081A EP 0947620 A1 EP0947620 A1 EP 0947620A1
Authority
EP
European Patent Office
Prior art keywords
eyelet
notch
heddle
edges
loom
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.)
Granted
Application number
EP99420081A
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English (en)
French (fr)
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EP0947620B2 (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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Publication date
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Application filed by Staeubli Lyon SA filed Critical Staeubli Lyon SA
Publication of EP0947620A1 publication Critical patent/EP0947620A1/de
Application granted granted Critical
Publication of EP0947620B1 publication Critical patent/EP0947620B1/de
Publication of EP0947620B2 publication Critical patent/EP0947620B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 for manufacturing a smooth for Jacquard type loom harness, one smooth and to a crowd training device for a Jacquard type loom.
  • each hook is associated with a arch to which several cords are connected, the set of these cords constituting the harness of the Jacquard mechanism.
  • each cord is hung on the upper end of a heddle that carries a grommet passage of a chain wire.
  • the healds are generally formed of metal rods.
  • it is known to form a stringer by joining two metal rods or strands which are then welded or brazed with tin for most of their length and nickel-plated to prevent possible oxidation of the tin from inducing soiling of the chain threads.
  • the assembly process of the smooth by welding of metal rods and nickel plating must be done with the utmost care, otherwise the smooth may present surface irregularities likely to injure or even cut the neighboring chain wires.
  • the beam does not not strong enough to fulfill its function which is to oscillate vertically, exerting an effort of pulling on a chain wire, several hundred times per minute.
  • an eyelet is arranged in a part intermediate of the stringer after the two strands which the have been separated from each other.
  • the height on which the two strands are separated from each other cannot not be precisely controlled, so it happens 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 place position between the wires.
  • the eyelet must be brazed between the rods or strands to hold in place and resist reaction forces wires, which can cause variations in thickness or formation of irregularities or "scrapes" near the point of passage of the wires. This can also have the consequence to wear the wires, even to lead to their breaking. To avoid these abrasion wear problems, you have to polish the surfaces beams after placing the eyelets, such an operation can only be performed manually taking into account usual heald dimensions.
  • the rails of art previous are not entirely satisfactory in terms of technical and have a relatively high manufacturing cost, especially because of the finishing operations, which influences significantly on the total cost price of a device crowd training, in particular of the Jacquard type, which can have up to 10,000 beams or more.
  • the invention it is not necessary to use two tin rods juxtaposed, because the receiving housing a guide eyelet is formed in the single strand of wire metal which constitutes the stringer.
  • Dimension control of the notch can be made with precision according to the embodiment of this notch, which facilitates the setting in place and holding the eyelet while it is no longer essential to use a fixing method that may result in the formation of smooth surface irregularities. The risks of wear of the warp threads are thus appreciably diminished.
  • the cut is made in the single-stranded filiform element by cutting by laser beam or water jet.
  • This aspect of the invention provides high accuracy in the dimensions of this notch, while cadences high production can be achieved.
  • this consists in fixing the eyelet in the notch by bonding, tinning, welding, in particular laser welding, or crimping.
  • it is welded punctually by laser an outer surface of the eyelet with the edges of the notch. In all cases, the risk of wear by abrasion of the chains are very significantly reduced.
  • the invention also relates to a heddle for a device. training the crowd in a loom, which is manufactured according to the method as previously described, and a smooth formed of a threadlike element, characterized in that this filiform element is a single-stranded rod which has a open notch in which is permanently fixed a eyelet for guiding a chain wire of the trade.
  • the eyelet has a periphery of thickness less than or equal to that of the single strand rod. This avoids any danger of interference to the level of the eyelets between neighboring stems, during rotations of the smooth around their respective longitudinal axes, in the since the eyelets do not form an angular projection at the outside of the rails.
  • the eyelet has an external surface adapted to the conformation edges spaced apart from the notch. This aspect of the invention allows to consider fixing the eyelet in the notch the methods mentioned above, which avoids its deburring.
  • the eyelet has a spindle-shaped external surface or overall elliptical.
  • the eyelet can be spot welded, at the level of its external surface, on the edges of the notch.
  • the invention finally relates to a device for forming the crowd for Jacquard type loom which includes a smooth as previously described.
  • a device for forming the crowd for Jacquard type loom which includes a smooth as previously described.
  • Such a device can operate at high speed without danger of premature wear of the son of chain, while its cost price is more attractive than the devices of the prior art.
  • FIG. 1 very schematically represents a mechanical Jacquard 2 of a loom. This mechanical controls several arches, only one of which, 4, has been shown which crosses 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 cord 6 is hooked to the upper end of a smooth 8 for controlling the position of a chain wire 10. Each stringer is fixed, by its lower part, to a spring 12 secured to a fixed anchoring frame 14 by means of a wired element 16.
  • the central part of the stringer 8 visible in FIG. 2 corresponds to detail II in FIG. 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 1 is approximately 3 mm while its thickness e is approximately 1 mm. In practice, the width 1 can be between approximately 1 and approximately 5 mm, while the thickness e is between approximately 0.3 and approximately 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 approximately 300 and approximately 400 mm.
  • An eyelet 22 for guiding a chain wire 10, visible at Figure 1 is in place in a notch 24 formed in a central part of element 20.
  • the method of manufacturing the heddle 8 is explained in reference to figures 3 to 6.
  • the element 20 is a flattened rod.
  • the notch 24 whose dimensions can be determined with a very large precision given the cutting mode used.
  • Use of a laser beam makes it possible to dispense with the use of a mechanical notch forming system, such a system mechanical being, in practice, not precise enough to allow the creation of a notch in a stringer whose dimensions 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 heddle 8, between approximately 8 and approximately 15 mm and a width l ', perpendicular to the axis XX', of the in the range 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 20 b and 20 c of the element 20.
  • the cutting operation could also be carried out, with the same advantages, by a pressurized water jet, or even by other techniques.
  • the edges 24a and 24b of the notch 24 which are generally parallel to the axis XX ', are separated in two directions F and F' generally perpendicular to the axis XX '.
  • the deformation thus generated of the edges 24 a and 24 b is plastic, the edges 24 a and 24 b remaining in the separated position shown in FIG. 5.
  • the width 1 ′ of the notch 24 is then appreciably increased to reach approximately 4 mm. Of course, the width 1 ′ obtained depends on the width 1 of the element 20 and on the length L ′ of the notch 24.
  • the eyelet 22 has a shape of spindle which corresponds substantially to the shape of the notch 24 shown in Figure 5, the eyelet 22 being elongated in the direction of the notch 24, that is to say of the XX '.
  • the eyelet 22 is then immobilized in the notch 24 by cooperation of shapes, that is to say by wedging.
  • the final immobilization is obtained by four welding points 26 distributed over the contact zone between the eyelet 22 and the edges 24 a and 24 b , that is to say of the surface 22 a .
  • the number and position of the weld points 26 results from a choice of the practitioner according to the materials and dimensions selected.
  • the welding of the elements 20 and 24 is carried out on one side of the heddle 20, by means of a YAG laser, by localized fusion of the elements 20 and 22. Of course, the welding could be carried out on the two faces 20b and 20c of the beam, in which case the number of welding points is doubled.
  • a crimping operation can be provided to strengthen the anchoring of the eyelet 22 inside notch 24.
  • the external surface 22 a of the eyelet 22 is of generally elliptical shape, which also allows it to cooperate with the edges 24 a and 24 b of the notch 24.
  • This eyelet 22 can be glued or tinned inside notch 24.
  • the eyelet 22 of the first embodiment of the invention can also be glued or tinned inside of the corresponding notch, while the eyelet of the second embodiment can also be soldered or crimped in square.
  • the element 20 is made of stainless steel dispenses a nickel-plating operation, which allows a reduction in the cost price of the boom compared to known devices and avoids irregularities.
  • the eyelet 22 has, at its external peripheral surface 22 a , a thickness substantially equal to the thickness e of the heddle 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 making angled projection with respect to faces 20b and 20c.
  • the eyelet 22 has been shown flat. However, it can be curved, in which case it is thicker than the element 20 in its central part.
  • the invention has been described with a section beam uniformly flattened. It is however applicable with other types of single strand, in particular with a 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)
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 true EP0947620A1 (de) 1999-10-06
EP0947620B1 EP0947620B1 (de) 2003-03-12
EP0947620B2 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)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1252944A2 (de) * 2001-02-28 2002-10-30 Bräcker AG Weblitze und Verfahren zur Herstellung einer Weblitze
EP1908863A1 (de) * 2006-10-06 2008-04-09 Groz-Beckert KG Weblitze für Jacquardwebmaschine
EP2166138A1 (de) 2008-09-23 2010-03-24 Groz-Beckert KG Jacquardlitze mit geprägtem Fadenaugenbereich
WO2010105314A2 (en) 2008-10-13 2010-09-23 Nv Michel Van De Wiele Heddle
EP2505700A1 (de) * 2011-03-28 2012-10-03 Groz-Beckert KG Weblitze mit einem Fadenauge zur verbesserten Aufnahme des Kettfadens
CN104153090A (zh) * 2014-08-13 2014-11-19 朱永春 一种通丝与综丝杆的连接设备的拉线装置

Families Citing this family (7)

* 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
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.
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
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
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
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
CH514700A (de) † 1968-10-18 1971-10-31 Braecker Ag Verfahren zum Herstellen von Weblitzen
CH573993A5 (de) † 1974-04-09 1976-03-31 Staeubli Ag
CH631755A5 (de) † 1978-09-26 1982-08-31 Braecker Ag Webelitze.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0403429A1 (de) * 1989-06-12 1990-12-19 Sulzer Innotec Ag Stabförmiges Fadenführungselement für Textilmaschinen, insbesondere Weblitze

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1252944A2 (de) * 2001-02-28 2002-10-30 Bräcker AG Weblitze und Verfahren zur Herstellung einer Weblitze
EP1252944A3 (de) * 2001-02-28 2002-11-20 Bräcker AG Weblitze und Verfahren zur Herstellung einer Weblitze
CH695240A5 (de) * 2001-02-28 2006-02-15 Braecker Ag Weblitze und Verfahren zur Herstellung einer Weblitze.
EP1908863A1 (de) * 2006-10-06 2008-04-09 Groz-Beckert KG Weblitze für Jacquardwebmaschine
EP2166138A1 (de) 2008-09-23 2010-03-24 Groz-Beckert KG Jacquardlitze mit geprägtem Fadenaugenbereich
EP2166139A1 (de) 2008-09-23 2010-03-24 Groz-Beckert KG Jacquardlitze mit geprägtem Fadenaugenbereich
US7963301B2 (en) 2008-09-23 2011-06-21 Groz-Beckert Kg Jacquard heald with embossed thread eye region
WO2010105314A2 (en) 2008-10-13 2010-09-23 Nv Michel Van De Wiele Heddle
EP2505700A1 (de) * 2011-03-28 2012-10-03 Groz-Beckert KG Weblitze mit einem Fadenauge zur verbesserten Aufnahme des Kettfadens
CN104153090A (zh) * 2014-08-13 2014-11-19 朱永春 一种通丝与综丝杆的连接设备的拉线装置

Also Published As

Publication number Publication date
ES2189368T3 (es) 2003-07-01
EP0947620B2 (de) 2008-07-09
CN1230609A (zh) 1999-10-06
DE69905782T2 (de) 2004-04-08
FR2776676B1 (fr) 2000-05-26
JPH11315441A (ja) 1999-11-16
CN1128256C (zh) 2003-11-19
EP0947620B1 (de) 2003-03-12
FR2776676A1 (fr) 1999-10-01
DE69905782D1 (de) 2003-04-17

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