EP3824126A1 - Dispositif de tissage conçu pour empêcher la formation de rayures dans des tissus ayant un aspect artisanal - Google Patents

Dispositif de tissage conçu pour empêcher la formation de rayures dans des tissus ayant un aspect artisanal

Info

Publication number
EP3824126A1
EP3824126A1 EP19759740.4A EP19759740A EP3824126A1 EP 3824126 A1 EP3824126 A1 EP 3824126A1 EP 19759740 A EP19759740 A EP 19759740A EP 3824126 A1 EP3824126 A1 EP 3824126A1
Authority
EP
European Patent Office
Prior art keywords
fabric
forming
yams
weaving machine
weft
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
EP19759740.4A
Other languages
German (de)
English (en)
Other versions
EP3824126B1 (fr
Inventor
Steven DEBAES
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.)
Vandewiele NV
Original Assignee
Vandewiele 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 Vandewiele NV filed Critical Vandewiele NV
Publication of EP3824126A1 publication Critical patent/EP3824126A1/fr
Application granted granted Critical
Publication of EP3824126B1 publication Critical patent/EP3824126B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms

Definitions

  • the present invention relates to a weaving machine for forming fabrics consisting of weft yarns, ground-warp yarns and pile-warp yarns, comprising:
  • shed-forming means provided for forming one or more sheds in successive operating cycles through the positioning of warp yams
  • a weft insertion device with at least one rapier provided for inserting one or more weft yams into a shed between fabric-forming warp yams and non-fabric-forming warp yams in successive operating cycles, wherein during the inserting of a weft yam the non-fabric-forming warp yams support a rapier;
  • a reed provided for pushing, in each operating cycle by means of to and fro movements during beating-up, the inserted weft yams against the fabric line of the fabrics formed by the weft yarns and the fabric-forming warp yarns.
  • the present invention relates in particular to a weaving machine (weaving device), preferably a rapier weaving machine, which is suitable for forming fabrics that have a handmade appearance ("handlook").
  • a weaving machine preferably a rapier weaving machine
  • an insertion system in the form of rapiers - at one or more weft insertion heights - inserts the weft yarns (the weft) through the shed.
  • Each rapier consists of a taker rapier / giver rapier combination.
  • the weft yarn is carried by a giver rapier and in the middle of the shed it is picked up by the corresponding taker rapier, which carries the weft yarn further through the shed.
  • the rapiers consist of a rapier head and of strong, rigid rapier rods.
  • these strong, rigid rapier rods cannot always guarantee completely accurate positioning in the middle owing to the large distance that must be covered, for example in weaving machines on which fabrics up to 4 or even 5 metres wide are woven.
  • To obtain accurate positioning of the rapiers in the middle of the shed besides supporting the rigid rapier rods at the sides of the fabric, supporting of the rapier in the shed is also necessary. Usually this additional support is provided by warp yarns, which support the rapiers during their motion through the shed. The rapiers are, as it were, partly carried by the warp yarns.
  • the weft as explained in the appended Figs. 1 and 2, is inserted outside the ground fabric on the back, so that the bottom rapier cannot be supported at that moment by the warp yarns.
  • Additional warp yarns (3) should be removed later in a known way (see EP 1460157), since they do not form part of the fabric (1).
  • These additional warp yarns (3) may also be made as fixed cords, which follow a path so that, at the level of the bottom rapier (9), they are located at a height below this rapier (9), so that the rapier (9) can be led over them.
  • the present invention now aims to provide a weaving device that allows fabrics to be manufactured with high densities with a handmade appearance, with a clean back and which, during weaving, offers sufficient support to the rapiers during their motion through the shed.
  • a weaving device has at least 1000 warp yam systems or warp yam passes per metre.
  • the aim of the invention is achieved by providing a weaving machine for forming fabrics consisting of weft yarns, ground-warp yarns and pile-warp yarns, comprising: shed-forming means provided for forming one or more sheds in successive operating cycles through the positioning of warp yams;
  • a weft insertion device with at least one rapier provided for inserting, in successive operating cycles, one or more weft yams into a shed between fabric-forming warp yams and non-fabric-forming warp yams, wherein during the inserting of a weft yam the non-fabric-forming warp yams support the rapier;
  • a reed provided for pushing, in each operating cycle, by means of to and fro movements during beating-up, the inserted weft yams against the fabric line of the fabrics formed by the weft yarns and the fabric-forming warp yarns;
  • the weaving machine further comprises a yam removal device for leading away the non-fabric-forming warp yams, and wherein this yarn removal device separates the non-fabric-forming warp yarns from the fabric-forming warp yarns before the fabric line, so that the non-fabric-forming warp yams are not located between the beaten-up fabric(s), so that they will also not push away any more pile and consequently there will also no longer be stripe formation on the back of the carpet.
  • the beaten-up fabric is a single-face or a face-a-face fabric.
  • the non-fabric-forming warp yams are located just beneath the rapier that they support. Based on their function, in particular supporting, these non-fabric-forming warp yarns may also be regarded as supporting yarns. These supporting yams will follow a path wherein they are deflected by the yarn removal device so that they will leave the shed.
  • the supporting yams may be configured as fixed cords.
  • the fixed cords are applied through the weaving machine, so as to support the rapiers during their motion through the shed. More preferably the fixed cords are made in a closed loop and these fixed cords move to distribute any wear uniformly over their total length.
  • the yam removal device comprises a number of hook-shaped or eye-shaped elements, wherein each hook-shaped or eye-shaped element is provided for leading away at least one non-fabric-forming warp yarn.
  • the number of hook-shaped or eye shaped elements corresponds to the number of non-fabric-forming warp yarns. More particularly the hook-shaped or eye-shaped elements are installed slidably.
  • other embodiments that fulfil a similar function such as e.g. slot-containing or groove- containing elements, are also within the scope of protection of the present invention.
  • the yarn removal device comprises a diverting channel with an open structure suitable for leading away the non-fabric-forming warp yarns.
  • the yarn removal device leads the non-fabric-forming warp yarns away in the direction of a collecting point, where the non-fabric-forming warp yarns are collected together and are then led away further in a group.
  • the weaving machine comprises several collecting points over its width.
  • the weaving machine comprises a lower bridge over which a formed fabric is led away in the direction of a cutting device, wherein the yarn removal device is provided against the lower bridge.
  • the yam removal device is provided against the underside of the lower bridge and the non-fabric-forming warp yarns are led away under the lower bridge.
  • the weaving machine also comprises an upper bridge wherein in this case the formed fabric is led away between the lower bridge and the upper bridge in the direction of the cutting device.
  • upper bridge and lower bridge are used in this patent application to refer to the cross beams which are secured above and below the fabric over the weaving width of the machine, and serve for guiding the fabrics in the direction of a cutting knife.
  • the space between the upper bridge and the lower bridge may be designated with the term "jaw”.
  • the weaving machine according to the present invention is preferably a single-face weaving machine with one, two or three rapiers. In another preferred embodiment the weaving machine is a face-a-face weaving machine with one, two or three rapiers.
  • the weaving machine according to the invention is suitable in particular for forming fabrics that have a handmade appearance.
  • the weft insertion device is provided with at least one top rapier and one bottom rapier in order to insert a respective weft yam along a top and a bottom insertion path, respectively, and wherein the non-fabric-forming warp yams support the bottom rapier.
  • the present invention further relates to a method for forming fabrics consisting of weft yams, ground-warp yarns and pile-warp yarns, wherein, in successive operating cycles, one or more sheds are formed by means of shed-forming means through the positioning of warp yams and wherein, in successive operating cycles, one or more weft yams are inserted in a shed between fabric-forming warp yams and non-fabric-forming warp yams via a weft insertion device with at least one rapier, wherein during the inserting of a weft yarn the non-fabric-forming warp yams support a rapier and wherein in each operating cycle, by means of to and fro movements of a reed during beating-up, the inserted weft yams are pushed against the fabric line of the fabrics formed by the weft yarns and the fabric-forming warp yarns, wherein the non-fabric-forming warp yarns are separated from the fabric-
  • the non-fabric-forming warp yarns are led away via hook-shaped or eye-shaped elements and/or via a diverting channel with an open structure.
  • the non fabric-forming warp yarns are led away in the direction of a collecting point, where the non-fabric-forming warp yarns are collected together and are then led away further in a group.
  • the method according to the present invention is suitable in particular for being applied on the weaving machine according to the invention as described above.
  • Fig. 1 schematic representation of the situation at the level of the lower bridge of a weaving machine on which a fabric with handmade appearance is woven according to the prior art, in particular the positioning of the weft and the non- fabric-forming warp yarns;
  • - Fig. 2 is a sectional view along line A -A in Fig. 1;
  • - Fig. 3 is a schematic representation of the path of the supporting yarns according to the prior art
  • FIG. 4 schematic representation of the situation at the level of the lower bridge of a weaving machine on which a fabric with handmade appearance is woven according to the invention, in particular the positioning of the weft and the non- fabric-forming warp yarns;
  • - Fig. 5 is a sectional view along line A -A in Fig. 1;
  • FIG. 6 is a schematic representation of the path of the supporting yarns according to the invention, in which the position of the reed movable to and fro can be seen in its first position and its second position at the level of the beat-up;
  • - Fig. 7 is a cross-section of the lower bridge with the yarn removal device
  • Fig. 8 is a representation of the lower bridge (dotted line) against which the yarn removal device is fastened, in which the path of the supporting yarns is illustrated according to the viewing direction K1 as indicated in Fig. 7;
  • Fig. 9 shows a view of the lower bridge against which the yarn removal device is provided, viewed according to the viewing direction K2 as indicated in Fig. 7;
  • Fig. 10 is a representation of the device shown in Fig. 8 but without a lower bridge.
  • the weaving machine according to the present invention is suitable for the manufacture of fabrics (1), preferably fabrics (1) that have a handmade appearance, and that consist of weft yarns, ground-warp yams and pile-warp yarns (2).
  • the weaving machine comprises:
  • shed-forming means (5) provided for forming one or more sheds in successive operating cycles through the positioning of warp yams
  • the weaving machine according to the present invention provides additional support of the rapiers (9) of the weft insertion device during their motion through the shed, so that in the middle of the shed there is accurate positioning of the giver rapier relative to the taker rapier.
  • the weaving machine according to the present invention is equipped with a yarn removal device (4) for leading away, as shown inter alia in Fig. 6, the non-fabric-forming warp yams (3), wherein this yarn removal device (4) separates the non-fabric-forming warp yarns (3) from the fabric forming warp yarns before the fabric line, so that the non-fabric-forming warp yarns (3) are not located between the beaten-up fabric(s).
  • the yarn removal device (4) is provided (see Figs. 7 and 8) against the underside of the lower bridge (7) so that the non-fabric-forming warp yams (3) are diverted under the lower bridge (7).
  • the yarn removal device (4) comprises a number of hook-shaped or eye-shaped elements, each being provided for leading away at least one non-fabric-forming warp yarn (3).
  • the number of hook-shaped or eye-shaped elements preferably corresponds to the number of non-fabric-forming warp yarns (3).
  • the hook-shaped or eye-shaped elements may be installed slidably, so that they can be moved if necessary.
  • a diverting channel (8) with an open structure for diverting the non-fabric-forming warp yarns (3).
  • the non-fabric-forming warp yarns (3) are applied by the reed (6) in the openings between the reed dents. They are located at regular distances at the bottom through an opening between two reed dents. A non fabric-forming warp yarn (3) is not applied in each opening.
  • Accurate positioning of the non-fabric-forming warp yams (3) is required at the level of the yarn removal device (4) to obtain a correct yam path so that contact with a reed dent is avoided during the complete reed motion during beating- up.
  • the diverting channel (8) with open structure is also movable sideways.
  • these non-fabric-forming warp yarns (3) may, as shown schematically in Fig. 6, be led away under the jaw, in the direction of a collecting point (V) where the non-fabric-forming warp yarns (3) are collected together and are then led away further in a group.
  • V collecting point

Landscapes

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

Abstract

La présente invention concerne, d'une part, un métier à tisser pour former des tissus (1) qui ont un aspect artisanal (« fait main »), comprenant : un moyen de formation de foule (5) conçu pour former une ou plusieurs foules dans des cycles de fonctionnement successifs par le positionnement de fils de chaîne; un dispositif d'insertion de trame doté d'au moins une pince (9) conçue pour insérer des fils de trame dans une foule entre des fils de chaîne de formation de tissu et des fils de chaîne de non-formation de tissu (3) où, lors de l'insertion d'un fil de trame, les fils de chaîne de non-formation de tissu (3) supportent une pince (9); un peigne (6) conçu pour pousser les fils de trame insérés pendant le battage contre la ligne de tissu des tissus formés par les fils de chaîne de formation de tissu et les fils de trame; et un dispositif de retrait de fil (4) pour éloigner les fils de chaîne de non-formation de tissu (3), ce dispositif de retrait de fil (4) séparant les fils de chaîne de non-formation de tissu (3) des fils de chaîne de formation de tissu avant la ligne de tissu de telle sorte que les fils de chaîne de non-formation de tissu (3) ne sont pas situés entre le ou les tissus battus. La présente invention concerne d'autre part un procédé de formation desdits tissus.
EP19759740.4A 2018-07-20 2019-07-03 Dispositif de tissage conçu pour empêcher la formation de rayures dans des tissus ayant un aspect artisanal Active EP3824126B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE20185527A BE1026477B1 (nl) 2018-07-20 2018-07-20 Weefinrichting uitgerust om streepvorming bij weefsels met een handgemaakte uitstraling te vermijden
PCT/IB2019/055675 WO2020016690A1 (fr) 2018-07-20 2019-07-03 Dispositif de tissage conçu pour empêcher la formation de rayures dans des tissus ayant un aspect artisanal

Publications (2)

Publication Number Publication Date
EP3824126A1 true EP3824126A1 (fr) 2021-05-26
EP3824126B1 EP3824126B1 (fr) 2022-09-07

Family

ID=63165117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19759740.4A Active EP3824126B1 (fr) 2018-07-20 2019-07-03 Dispositif de tissage conçu pour empêcher la formation de rayures dans des tissus ayant un aspect artisanal

Country Status (3)

Country Link
EP (1) EP3824126B1 (fr)
BE (1) BE1026477B1 (fr)
WO (1) WO2020016690A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289706A (en) * 1965-06-10 1966-12-06 Morgan Valentine Company L Means for the manufacture of cut pile fabrics
BE1016276A3 (nl) * 2003-03-20 2006-07-04 Wiele Michel Van De Nv Werkwijze en dubbelstukweefmachine voor het dubbelstukweven van een boven-en onderweefsel.
BE1016658A3 (nl) * 2005-06-24 2007-04-03 Wiele Michel Van De Nv Werkwijze voor het weven van een weefsel, weefsel geweven volgens een dergeljke werkwijze en weefmachine voor het weven van een dergelijk weefsel.
FR2920788B1 (fr) * 2007-09-11 2010-04-09 Schonherr Textilmaschb Gmbh Procede de commande du mouvement des cadres de lisses d'un metier a tisser tapis double piece

Also Published As

Publication number Publication date
EP3824126B1 (fr) 2022-09-07
BE1026477B1 (nl) 2020-02-19
BE1026477A1 (nl) 2020-02-11
WO2020016690A1 (fr) 2020-01-23

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