EP3824126B1 - Webvorrichtung zur verhinderung der streifenbildung bei stoffen mit handgearbeitetem erscheinungsbild - Google Patents

Webvorrichtung zur verhinderung der streifenbildung bei stoffen mit handgearbeitetem erscheinungsbild Download PDF

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Publication number
EP3824126B1
EP3824126B1 EP19759740.4A EP19759740A EP3824126B1 EP 3824126 B1 EP3824126 B1 EP 3824126B1 EP 19759740 A EP19759740 A EP 19759740A EP 3824126 B1 EP3824126 B1 EP 3824126B1
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EP
European Patent Office
Prior art keywords
fabric
warp yarns
forming
weaving machine
forming warp
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EP19759740.4A
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English (en)
French (fr)
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EP3824126A1 (de
Inventor
Steven DEBAES
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Vandewiele NV
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Vandewiele NV
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    • 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:
  • 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, which is suitable for forming fabrics that have a handmade appearance ("handlook").
  • 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. It is important that the transfer of the weft yarn takes place accurately and quickly, therefore it is crucial that at the level of the middle the taker rapier and the giver rapier are positioned really precisely relative to each other.
  • 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.
  • 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 yarn systems or warp yarn 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:
  • the non-fabric-forming warp yarns 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 yarns will follow a path wherein they are deflected by the yarn removal device so that they will leave the shed.
  • this prevents the non-fabric-forming warp yarns forming a temporarily apparent part of the beaten-up fabric during beating-up. After beating-up, they thus no longer need to be removed from the formed fabric and they also can no longer give rise to (white) stripe formation. In this way, fabrics may be formed with a good-looking, even back surface.
  • the supporting yarns 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 yarn 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 yarn 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 yarn along a top and a bottom insertion path, respectively, and wherein the non-fabric-forming warp yarns support the bottom rapier.
  • the present invention further relates to a method for forming fabrics consisting of weft yarns, 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 yarns and wherein, in successive operating cycles, one or more weft yarns are inserted in a shed between fabric-forming warp yarns and non-fabric-forming warp yarns via a weft insertion device with at least one rapier, wherein during the inserting of a weft yarn the non-fabric-forming warp yarns 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 yarns 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-forming warp yarns before the fabric line so that the non-
  • 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.
  • 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 yarns and pile-warp yarns (2).
  • the weaving machine comprises:
  • 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 yarns (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 yarns (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 yarns (3) is required at the level of the yarn removal device (4) to obtain a correct yarn 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

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

Claims (15)

  1. Webmaschine zum Bilden von Geweben (1), die aus Schussfäden, Grundkettfäden und Polkettfäden (2) bestehen, umfassend:
    - Webfachbildungsmittel (5), die zum Bilden eines oder mehrerer Webfächer in aufeinanderfolgenden Arbeitszyklen durch das Positionieren von Kettfäden bereitgestellt sind;
    - eine Schusseintragsvorrichtung mit mindestens einem Greifer (9), die zum Eintragen eines oder mehrerer Schussfäden in ein Webfach zwischen gewebebildende Kettfäden und nicht gewebebildende Kettfäden (3) in aufeinanderfolgenden Arbeitszyklen bereitgestellt ist, wobei während des Eintragens eines Schussfadens die nicht gewebebildenden Kettfäden (3) einen Greifer (9) stützen;
    - ein Webblatt (6), das zum Drücken der eingetragenen Schussfäden gegen die Gewebelinie der durch die Schussfäden und die gewebebildenden Kettfäden ausgebildeten Gewebe durch Hin- und Herbewegungen während eines Anschlagens in jedem Arbeitszyklus bereitgestellt ist;
    dadurch gekennzeichnet, dass die Webmaschine ferner eine Fadenentfernungsvorrichtung (4) zum Wegführen der nicht gewebebildenden Kettfäden (3) umfasst, wobei die Fadenentfernungsvorrichtung (4) die nicht gewebebildenden Kettfäden (3) von den gewebebildenden Kettfäden vor der Gewebelinie trennt, so dass sich die nicht gewebebildenden Kettfäden (3) nicht zwischen dem/den angeschlagenen Gewebe(n) befinden.
  2. Webmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Fadenentfernungsvorrichtung (4) eine Anzahl von hakenförmigen oder ösenförmigen Elementen umfasst, wobei jedes hakenförmige oder ösenförmige Element zum Wegführen mindestens eines nicht gewebebildenden Kettfadens (3) bereitgestellt ist.
  3. Webmaschine nach Anspruch 2, dadurch gekennzeichnet, dass die Anzahl von hakenförmigen oder ösenförmigen Elementen der Anzahl von nicht gewebebildenden Kettfäden (3) entspricht.
  4. Webmaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die hakenförmigen oder ösenförmigen Elemente verschiebbar installiert sind.
  5. Webmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Fadenentfernungsvorrichtung (4) einen Umlenkkanal mit einer offenen Struktur (8) umfasst, die geeignet ist, die nicht gewebebildenden Kettfäden (3) wegzuführen.
  6. Webmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Fadenentfernungsvorrichtung (4) die nicht gewebebildenden Kettfäden (3) in die Richtung eines Sammelpunkts (V) wegführt, an dem die nicht gewebebildenden Kettfäden (3) zusammen gesammelt werden und dann in einer Gruppe weiter weggeführt werden.
  7. Webmaschine nach Anspruch 6, dadurch gekennzeichnet, dass die Webmaschine über ihre Breite mehrere Sammelpunkte (V) aufweist.
  8. Webmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Webmaschine einUnterlineal (7) aufweist, über das ein geformtes Gewebe in die Richtung einer Schneidvorrichtung weggeführt wird, wobei die Fadenentfernungsvorrichtung (4) gegen das Unterlineal (7) bereitgestellt ist.
  9. Webmaschine nach Anspruch 8, dadurch gekennzeichnet, dass die Fadenentfernungsvorrichtung (4) gegen die Unterseite des Unterlineals (7) bereitgestellt ist, und dadurch, dass die nicht gewebebildenden Kettfäden (3) unter dem Unterlineal (7) umgelenkt werden.
  10. Webmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Webmaschine eine Einzelstückwebmaschine mit einem, zwei oder drei Greifern (9) ist.
  11. Webmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Webmaschine eine Doppelstückwebmaschine mit einem, zwei oder drei Greifern (9) ist.
  12. Webmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schusseintragsvorrichtung mit mindestens einem oberen und einem unteren Greifer bereitgestellt ist, um einen jeweiligen Schussfaden entlang einem oberen bzw. einem unteren Eintragspfad einzutragen, und dadurch, dass die nicht gewebebildenden Kettfäden (3) den unteren Greifer (9) stützen.
  13. Verfahren zum Bilden von Geweben, die aus Schussfäden, Grundkettfäden und Polkettfäden (2) bestehen, wobei in aufeinanderfolgenden Arbeitszyklen mittels Webfachbildungsmitteln (5) ein oder mehrere Webfächer durch das Positionieren von Kettfäden ausgebildet werden und wobei in aufeinanderfolgenden Arbeitszyklen über eine Schusseintragsvorrichtung mit mindestens einem Greifer (9) ein oder mehrere Schussfäden in ein Webfach zwischen gewebebildende Kettfäden und nicht gewebebildende Kettfäden (3) eingetragen werden, wobei während des Eintragens eines Schussfadens die nicht gewebebildenden Kettfäden (3) einen Greifer (9) stützen, und wobei die eingetragenen Schussfäden in jedem Arbeitszyklus durch Hin- und Herbewegungen eines Webblatts (6) während eines Anschlagens gegen die Gewebelinie der durch die Schussfäden und die gewebebildenden Kettfäden ausgebildeten Gewebe gedrückt werden, dadurch gekennzeichnet, dass die nicht gewebebildenden Kettfäden (3) von den gewebebildenden Kettfäden vor der Gewebelinie getrennt werden, so dass sich die nicht gewebebildenden Kettfäden (3) nicht zwischen dem/den angeschlagenen Gewebe(n) befinden.
  14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass die nicht gewebebildenden Kettfäden (3) über hakenförmige oder ösenförmige Elemente und/oder über einen Umlenkkanal mit einer offenen Struktur (8) umgelenkt werden.
  15. Verfahren nach Anspruch 13 oder 14, dadurch gekennzeichnet, dass die nicht gewebebildenden Kettfäden (3) in die Richtung eines Sammelpunkts (V) umgelenkt werden, an dem die nicht gewebebildenden Kettfäden (3) zusammen gesammelt werden und dann in einer Gruppe weiter weggeführt werden.
EP19759740.4A 2018-07-20 2019-07-03 Webvorrichtung zur verhinderung der streifenbildung bei stoffen mit handgearbeitetem erscheinungsbild Active EP3824126B1 (de)

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 (en) 2018-07-20 2019-07-03 Weaving device equipped for preventing stripe formation in fabrics with a handmade appearance

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

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EP19759740.4A Active EP3824126B1 (de) 2018-07-20 2019-07-03 Webvorrichtung zur verhinderung der streifenbildung bei stoffen mit handgearbeitetem erscheinungsbild

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EP (1) EP3824126B1 (de)
BE (1) BE1026477B1 (de)
WO (1) WO2020016690A1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746190B1 (de) * 2005-06-24 2009-03-11 NV Michel van de Wiele Verfahren zum Weben eines Gewebes und ein Gewebe welches mit diesem Verfahren gewebt wurde

Family Cites Families (3)

* 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.
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746190B1 (de) * 2005-06-24 2009-03-11 NV Michel van de Wiele Verfahren zum Weben eines Gewebes und ein Gewebe welches mit diesem Verfahren gewebt wurde

Also Published As

Publication number Publication date
WO2020016690A1 (en) 2020-01-23
BE1026477A1 (nl) 2020-02-11
EP3824126A1 (de) 2021-05-26
BE1026477B1 (nl) 2020-02-19

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