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WO2008003368A1 - Dispositif résistant à l'usure pour la formation d'une armure en gaze - Google Patents

Dispositif résistant à l'usure pour la formation d'une armure en gaze Download PDF

Info

Publication number
WO2008003368A1
WO2008003368A1 PCT/EP2007/004423 EP2007004423W WO2008003368A1 WO 2008003368 A1 WO2008003368 A1 WO 2008003368A1 EP 2007004423 W EP2007004423 W EP 2007004423W WO 2008003368 A1 WO2008003368 A1 WO 2008003368A1
Authority
WO
WIPO (PCT)
Prior art keywords
heddle
lifting
leno
wire
lifting heddle
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.)
Ceased
Application number
PCT/EP2007/004423
Other languages
English (en)
Inventor
Ignace Meyns
Patrick Glorie
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.)
Picanol NV
Original Assignee
Picanol NV
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
Application filed by Picanol NV filed Critical Picanol NV
Priority to CN2007800016883A priority Critical patent/CN101365836B/zh
Priority to DE602007007616T priority patent/DE602007007616D1/de
Priority to AT07764536T priority patent/ATE473315T1/de
Priority to EP07764536A priority patent/EP2035607B1/fr
Publication of WO2008003368A1 publication Critical patent/WO2008003368A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • D03C7/02—Gauze healds

Definitions

  • the present invention relates to a lifting heddle for a device for moving leno warp threads to form a leno weave, more particular for a device comprising two lifting heddles and a doup heddle moving along with these lifting heddles.
  • the present invention also relates to a device making use of such a lifting heddle.
  • a device for moving leno warp threads to form a leno weave is e.g. disclosed in US4967802 or EP371257.
  • Such a device comprises two lifting heddles and one doup heddle, which is also called a half heddle.
  • the lifting heddles are made out of polymer material and are provided with a magnet to assist the lifting of the doup heddle, which doup heddle is made out of steel that can be attracted magnetically.
  • the devices for moving leno warp threads to form a leno weave are mounted in a weaving loom in such a way that the surfaces of the lifting heddles are oriented in a direction substantially parallel to the warp direction. Warp threads or leno warp threads slide over one of the surfaces of each of the lifting heddles of the device.
  • One of the major problems from which these devices suffer from, is wear by the leno warp threads.
  • the leno warp threads are guided in the device in general, and in the lifting heddles in particular.
  • An improvement is suggested by US5040571 , where a metal link is provided between an upper and a lower part of the lifting heddle.
  • BE1012258 suggests the use of a lamella next to the lifting heddle, which lamella shields the polymer lifting heddle from wear caused by the leno warp threads contacting the lifting heddle during use.
  • a disadvantage of these known lifting heddles is that all metal parts have to be treated in order not to damage the warp threads when passing the device, e.g. when forming a leno weave.
  • the metal elements have to be processed and smoothened to avoid sharp edges on the metal parts that could damage warp threads or even cause rupture of warp threads.
  • metal shields in the lifting heddle may disturb the correct functioning of magnets mounted at the lower part of the lifting heddle to assist the movement of the doup heddle along with one of the lifting heddles.
  • a lifting heddle comprising an upper part and a lower part, which lower part comprises a section coupling the upper part to the lower part.
  • the lower part comprises a sheath portion of solid material, e.g. provided as a hollow elongated plate, a profiled strip or a flat sheath portion.
  • the sheath comprises a guiding channel, for guiding a part of the doup heddle.
  • the coupling section comprises a guide opening for guiding a doup heddle into the guiding channel, whereby at least at the coupling section of the lifting heddle there is arranged a wire on the lifting heddle for guiding a leno warp thread along the lifting heddle.
  • a lifting heddle according to the first aspect of the present invention allows to limit the wear of a lifting heddle as a result of contact of the leno warp threads with the lifting heddle in a simple manner.
  • the use of a wire with a wire surface is favourable for contacting a leno warp thread moving along said wire, because such a wire can be provided with a smooth surface.
  • a wire can be bent or formed easily into any shape suitable for contacting a leno warp thread.
  • a first wire and a second wire may be arranged on the lifting heddle for guiding a leno warp thread along the lifting heddle.
  • the first wire and second wire are identical, in particular identically shaped.
  • the wire is made of metal, the wire is bent into a suitable shape and/or the wire is fixed to the lifting heddle. This is advantageous for manufacturing the lifting heddle.
  • the first wire and the second wire may be coupled to each other by means of an intermediate part.
  • the intermediate part may be arranged in a position in order to prevent a doup heddle from sliding down too deeply into a guiding channel of the lifting heddle.
  • the lower part of the lifting heddle may be made of a non-magnetic material.
  • the lower part of the lifting heddle may be made of polymer material, such as synthetic polymer, and preferably comprises a magnet that can assist a doup heddle to move along with a lifting heddle. Amongst others, this allows to prevent that the functioning of the magnet is disturbed by the wire for guiding leno warp threads that is provided at the lifting heddle.
  • a device for moving leno warp threads to form a leno weave comprises two lifting heddles and a doup heddle moveable along with the lifting heddles and comprising at least one lifting heddle according to the first aspect of the present invention.
  • a device with moveable lifting heddles disposed adjacent to each other for guiding a doup heddle allows the doup heddle to be carried along alternatively with one of the lifting heddles when the lifting heddles alternatively move reciprocatively in order to form a leno weave with leno warp threads and weft threads.
  • Fig. 1 and Fig. 2 show schematically a leno heddle device according to the present invention.
  • Fig. 3, Fig. 4 and Fig. 5 are details of a lifting heddle according to the invention being part of the leno heddle device of Fig. 1 and Fig. 2.
  • Fig. 6a, Fig. 6b, Fig. 6c, Fig. 6d and Fig. 6e are respective cross- sections along lines A-A, B-B, C-C, D-D and E-E in Fig. 3.
  • FIG. 7, Fig. 8 and Fig. 9 show schematically an alternative lifting heddle according to the invention being part of a leno heddle device according to the present invention.
  • Fig. 10, Fig. 11 and Fig. 12 show schematically a second alternative lifting heddle according to the invention being part of a leno heddle device according to the present invention.
  • Fig. 13a and Fig. 13b are respective cross-sections along lines F-F and G-G in Fig. 10.
  • Fig. 14, Fig. 15 and Fig. 16 show schematically an other alternative lifting heddle according to the invention being part of a leno heddle device according to the present invention.
  • Fig. 17 is a cross-sections along lines H-H in Fig. 14.
  • the same reference signs refer to the same or analogous elements.
  • a device A coupled to a device B should not be limited to devices or systems wherein a part of device A is directly connected to a part of device B. It means that there exists a connection between a part of device A and a part of device B which may be a connection including other devices or means.
  • non-magnetic is to be understood as not capable to be magnetized.
  • sheath is to be understood as an at least partly surrounding or partly enveloping structure.
  • the structure may be open at least on one side and at the top.
  • a leno heddle device 100 as subject of the present invention is shown.
  • Fig. 1 shows the leno heddle device 100 comprising a doup heddle 400 mounted in two lifting heddles 200 and 300, wherein the lifting heddle 300 is lifted to its maximum upper position
  • Fig. 2 shows the leno heddle device 100 in its separate parts prior to combining the parts.
  • a leno heddle device 100 comprises two substantially identical lifting heddles 200 and 300, and a doup heddle 400.
  • Each lifting heddle 200, 300 comprises an upper part 210, 310 and a lower part 220, 320, which lower part comprises a section 221 , 321 for coupling the lower part 220, 320 to the upper part 210, 310, the section being preferably bevelled.
  • the upper part 210, 310 comprises a driving element 212, 312 for coupling the lifting heddle to a driving system, which causes the lifting heddle to move up and down.
  • the lower end of the lower part 220, 320 comprises a similar driving element 222, 322. Any suitable driving element may be used of which the following are several examples.
  • the leno heddles can be driven using the driving mechanism as described in EP 371257.
  • the lower part 220, 320 is preferably made out of solid, non-magnetic material, e.g. made out of a polymeric material, such as a synthetic polymer, e.g. a thermoset polymer or thermoplastic polymer such as e.g. polyethylene, polypropylene or polyethylene reinforced with carbon, polypropylene reinforced with carbon, ABS, polycarbonate, etc.
  • the lower part 220, 320 is preferably injection moulded but any other suitable manufacturing method may be used.
  • the upper part is possibly made out of the same material as the lower part. Most preferred, the upper part is integrated with the lower part, possibly fabricated together to form one entity, e.g. fabricated by injection moulding in one and the same injection moulding step to form one entity.
  • the lower part is executed as a sheath comprising a guide channel 223, 323 in which the doup heddle 400 slides in and out during use of the leno heddle device.
  • the sheath 260 comprises amongst others a structure comprising as shown in Fig. 6e a U-shaped enlongated profile having legs 261 and 262 and a connecting wall 263.
  • the lifting heddle comprises, in the example shown, a magnet 225, 325, which assists the doup heddle to move along with the lifting heddle.
  • the doup heddle 400 comprises two legs 410 and 420, which legs slide in the guide channels 223 and 323 of the lifting heddles 200 and 300 via the guide openings 224 and 324. Where the two legs 410 and 420 meet at the top of the doup heddle, an eyelet 430 is provided for guiding one or a number of first leno warp threads 501.
  • the leno heddle device is in ground position when the bevelled sections 221 and 321 are at substantially the same height.
  • one or a number of secondary leno warp threads 502 are guided between one of the legs 410 or 420 of the doup heddle 400 and one of the upper parts of one of the lifting heddles 200 or 300, and this in such a way that, when the lifting heddle 200 is moved upwards, the secondary leno warp thread 502 is guided between leg 420 and upper part 310 of lifting heddle 300, or in case the lifting heddle 300 is moved upwards, the secondary leno warp thread 502 is guided between leg 410 and upper part 210 of lifting heddle 200.
  • the leno warp threads 501 and 502 form together with weft threads, not shown, a leno weave 505.
  • the leno warp threads will contact the surface of the lifting heddles at least at one side of the bevelled section of the lifting heddle when one of the lifting heddles is moved upwards.
  • at least one, but preferably both lifting heddles 200, 300 are provided with at least one wire having a rounded contact surface for contacting a warp thread or leno warp thread along the bevelled section 221 , 321.
  • each of the lifting heddles 200 and 300 is provided with two wires 230 and 330, and 240 and 340.
  • the lifting heddle 200 is provided with a wire 230 at a first surface 231 and with a second wire 240 at the second surface 241 , extending substantially parallel with the first surface 231.
  • the lifting heddle 300 is provided with a wire 330 at a first surface 331 and with a second wire 340 at the second surface 341 , extending substantially parallel with the first surface 331.
  • the wires 230, 240 and 330, 340 can easily be shaped or transformed into the requested shape by profiling and/or bending the wire into an appropriate shape.
  • the wire or wires 230, 240 and 330, 340 are at a certain distance of the guide opening 224, 324 for the doup heddle 400, more particularly a distance in the order of magnitude of the thickness of the wire, as shown in the drawings.
  • the wires need not to be self-supporting, as the polymer of the section 226, 326 of the bevelled section 221 , 321 of the lifting heddle 200, 300 may support the wire 230, 240, 330, 340.
  • the wires may be self-supporting, e.g. free of distributed support by the lifting heddle.
  • wire manufacture can provide a high quality product at a reasonable cost
  • wires are available in a wide range of diameters and a wide range of materials, e.g. non-metals, metals and metal alloys, including non-magnetic materials
  • wires are obtainable with a smooth outer surface of high quality
  • the wire drawing process work hardens the material thus producing a hard outer surface which is wear resistant
  • wires can easily be manipulated, e.g. bent and positioned f) wires may be removed and replaced if worn which allows the basic lifting heddle to be recuperated and reused. Such a replacement may also even be done at the weaving loom by an operator.
  • the provision of two wires, each one near one of the side surfaces of the lifting heddle, also has the advantage that the leno heddle device allows a leno warp thread to be arranged to slide over a wire mounted near a particular one of the side surfaces of the lifting heddle, such that a warp thread can be guided along a particular side surface of the lifting heddle, i.e. along the left surface 231 or along the right surface 241 of the lifting heddle 200 as shown in Fig. 5.
  • This also allows the leno heddle device to be used in both directions, i.e. whereby the first lifting heddle 200 is arranged in front of the second lifting heddle 300 in production direction, or vice versa.
  • the advantage of reduction of wear to the lifting heddles is thus independent of the way the leno heddle device as a whole is mounted in the weaving machine. Further it is independent at which side surface of the lifting heddle 200, 300 a leno warp thread is running.
  • the wire is preferably made out of smooth, strong and possibly nonmagnetic material.
  • a metal wire more advantageously a normal steel or stainless steel wire having, for example, a diameter in the range of 0.2mm to 2mm, such as a diameter of 0.5mm may be used. Of course any other diameter that allows a thread to be suitably arranged in a lifting heddle can be used.
  • the cross section of the wire is preferably round, although oval profiled wires or profiled wired having another rounded shape may as well be used.
  • Alternative wires are polymer wires, e.g. wires from Teflon (Polytetrafluorethylene). Also ceramic wire-like objects such as e.g. wires with a ceramic or diamond-like outer layer are possible.
  • Fig. 3 Detailed views of a lifting heddle 200 is shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6a to Fig. 6e.
  • Identical reference numbers refer to identical features as shown in Fig. 1 and Fig. 2.
  • the wires 230 and 240 may be fixed to the upper and lower part of the lifting heddle by means of respective fixing holes 233 and 234, and 243 and 244, in which the outer ends of the wire are fixed, e.g. by inserting the ends in the holes to hold the ends in the holes.
  • This can be done by providing fixing holes having a diameter slightly smaller than the diameter of the wire.
  • the wire is fixed by pressing the outer ends into the fixing holes.
  • the outer ends of the wire are glued in the fixing holes by means of appropriate glue.
  • Still another alternative is to provide the wire with a glue along at least a portion of its length, and fixing the wire to at least the bevelled section by gluing this at least a portion of its length to the lifting heddle.
  • Any suitable glue or adhesive may be used, e.g. pressure contact adhesive, hot melt adhesive, cross-linking adhesive. Any other mechanical fixing method may be used. For example, also locally partially melting the polymer of the lower part and embedding the wire in this partially molten polymer may be used to fix the wire to the lifting heddle.
  • the wires 230 and 330, and 240 and 340 extending along the bevelled sections 221 and 321 respectively, may further extend downwards along the section 226, 326 of the bevelled section 221 , 321 near lower part 220, 320. Possibly the wires may extend upwards along the section of the upper part which section is to couple the upper part to the bevelled section of the lower part, i.e. over the whole length of the upper part.
  • the lifting heddle 500 comprises a pin 503 extending from the first surface 531 to the second surface 541 substantially parallel to the first surface 531 of the section 226. This pin 503 is to prevent the doup heddle from sliding down into the guiding channel 223 too deeply, thereby contacting the lower edge of the guiding opening 224 and damaging this edge.
  • a pin is known from BE1012259.
  • the pin 503 normally does not make contact with a leno warp thread and thus cannot cause damage to a leno warp thread.
  • a sliding of the inner edge of the doup heddle along the pin 503, may sharpen the edges of the doup heddle contacting the pin.
  • this sharpening will not cause additional damage to the leno warp threads.
  • Yet another alternative lifting heddle 600 is shown in Fig. 10, Fig. 11 ,
  • the lifting heddle is provided with a wire 601 , 602 for preventing a leno warp thread to contact the side of the polymer bevelled section of the lifting heddle 600, more particularly to the outer surfaces 231 , 241.
  • wires are provided as one entity.
  • the wires 601 , 602 are coupled to each other as shown in this case at their lower ends by means of an intermediate part 603, i.e. an intermediate wire part having a shape similar as the one of the wires 601 , 602.
  • the intermediate part 603 can be arranged into a fixing hole 604.
  • the lifting heddle 600 may be provided with a pin 503 extending from the first surface 531 to the second surface 541 substantially parallel to the first surface 531.
  • This pin 503 is to prevent the doup heddle to drop down in to the guiding channel too deep, thereby contacting the lower edge of the guiding opening 224 and damaging its edge, as is already known from BE1012259.
  • Another alternative, not shown in the figures, is that the two wires are coupled to each other at their upper ends by means of an intermediate part in a similar way.
  • FIG. 14 Another alternative lifting heddle 700 is shown in Fig. 14, Fig. 15, Fig. 16 and Fig. 17.
  • the same features are indicated with same references as for lifting heddle 200.
  • the two wires 701 and 702 form one entity and are coupled to each other at their lower ends by means of an intermediate part 703, which is arranged as and functions as a pin for preventing the doup heddle from sliding down in the guiding channel 223 too deeply, thereby causing contact with the edge of the guiding opening 224.
  • a device for moving leno warp threads to form a leno weave in general, and a leno heddle device as subject of the present invention in particular, may be used to provide a leno selvedge at the sides of a woven fabric, or may be used to bind one or more warp threads in a leno.
  • the device for moving leno warp threads to form a leno weave can be used in weaving machines having at least 1000 movements per minute of the device, i.e. the changing of position of the lifting heddles.
  • the device for moving leno warp threads to form a leno weave as subject of the present invention may be used in linear or round weaving looms, and is useful to provide any type of woven structure, such as single layer woven structures, double layer woven structures as velvet woven structure or seamless woven bags or any other kind of woven structure.
  • the device can also be applied in weaving machines having any kind of weft insertion principle, such as airjet weaving machines, rapier weaving machines, projectile weaving machines or any other kind of weaving machine.
  • the upper parts and/or the lower parts of the lifting heddles may be provided with a wire, which is provided as wire according to the invention for contacting the warp threads or leno warp threads along the bevelled section of the lifting heddles.
  • the lifting heddle and the device according to the claimed invention are not restricted to the shown and described embodiments, the claimed invention also comprises variants and combinations of these embodiments.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Organic Insulating Materials (AREA)

Abstract

L'invention concerne un dispositif (100) et une lisse de soulèvement destinée à un dispositif (100) servant à déplacer des fils (501, 502) de chaîne d'armure pour former une armure (505) en gaze, le dispositif (100) comportant des lisses (200, 300) de soulèvement et une demie-lisse (400), la lisse (200, 300) de soulèvement comportant une partie supérieure (210, 310) et une partie inférieure (220, 320), la partie inférieure comportant une section (221, 321) couplant la partie inférieure à la partie supérieure et un fil métallique (230, 240, 330, 340) étant disposé sur la lisse (200, 300) de soulèvement, au moins au niveau de la section (221, 321) de la lisse (200, 300) de soulèvement, pour guider un fil (501, 502) de chaîne d'armure le long de la lisse (200, 300) de soulèvement.
PCT/EP2007/004423 2006-07-03 2007-05-16 Dispositif résistant à l'usure pour la formation d'une armure en gaze Ceased WO2008003368A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2007800016883A CN101365836B (zh) 2006-07-03 2007-05-16 用于形成纱罗织物的抗磨损装置
DE602007007616T DE602007007616D1 (de) 2006-07-03 2007-05-16 Dreherbindung
AT07764536T ATE473315T1 (de) 2006-07-03 2007-05-16 Verschleissfeste vorrichtung zur herstellung einer dreherbindung
EP07764536A EP2035607B1 (fr) 2006-07-03 2007-05-16 Dispositif résistant à l'usure pour la formation d'une armure en gaze

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2006/0362A BE1017202A3 (nl) 2006-07-03 2006-07-03 Een sleetvaste inrichting voor het vormen van een leno binding.
BE2006/0362 2006-07-03

Publications (1)

Publication Number Publication Date
WO2008003368A1 true WO2008003368A1 (fr) 2008-01-10

Family

ID=37808281

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/004423 Ceased WO2008003368A1 (fr) 2006-07-03 2007-05-16 Dispositif résistant à l'usure pour la formation d'une armure en gaze

Country Status (6)

Country Link
EP (1) EP2035607B1 (fr)
CN (1) CN101365836B (fr)
AT (1) ATE473315T1 (fr)
BE (1) BE1017202A3 (fr)
DE (1) DE602007007616D1 (fr)
WO (1) WO2008003368A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111074399A (zh) * 2019-12-09 2020-04-28 浙江丝绸科技有限公司 一种数码提花机用耐磨损的新型绞综
CN114016180B (zh) * 2021-10-20 2024-05-28 南京望天科技有限公司 一种可自动复位的纱罗综

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2033800A (en) * 1935-06-19 1936-03-10 Steel Heddle Mfg Co Harness for cross weaving
US3990481A (en) * 1974-06-10 1976-11-09 Grob & Co. Aktiengesellschaft Leno heddles
DE4003471A1 (de) * 1989-03-01 1990-09-13 Kloecker Entwicklungs Gmbh Hebelitze
US5040571A (en) * 1989-04-19 1991-08-20 Klocker-Entwicklungs-Gmbh Lifting heddle with adjustable sections
BE1012258A3 (nl) * 1998-10-30 2000-08-01 Picanol Nv Broekhevelinrichting voor een weefmachine.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29703896U1 (de) * 1997-03-04 1998-07-02 Klöcker-Entwicklungs-GmbH, 46325 Borken Hebelitze
DE10257519B3 (de) * 2002-12-10 2004-04-01 Klöcker-Entwicklungs-Gmbh Vorrichtung zum Bilden einer Dreherkante
DE102004030913B3 (de) * 2004-06-25 2005-07-07 Klöcker-Entwicklungs-Gmbh Litze, insbesondere Hebelitze

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2033800A (en) * 1935-06-19 1936-03-10 Steel Heddle Mfg Co Harness for cross weaving
US3990481A (en) * 1974-06-10 1976-11-09 Grob & Co. Aktiengesellschaft Leno heddles
DE4003471A1 (de) * 1989-03-01 1990-09-13 Kloecker Entwicklungs Gmbh Hebelitze
US5040571A (en) * 1989-04-19 1991-08-20 Klocker-Entwicklungs-Gmbh Lifting heddle with adjustable sections
BE1012258A3 (nl) * 1998-10-30 2000-08-01 Picanol Nv Broekhevelinrichting voor een weefmachine.

Also Published As

Publication number Publication date
BE1017202A3 (nl) 2008-04-01
CN101365836B (zh) 2011-08-17
ATE473315T1 (de) 2010-07-15
DE602007007616D1 (de) 2010-08-19
EP2035607B1 (fr) 2010-07-07
CN101365836A (zh) 2009-02-11
EP2035607A1 (fr) 2009-03-18

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