EP0402285B1 - Supporting and guiding device for mechanical weft inserters in shuttleless looms - Google Patents

Supporting and guiding device for mechanical weft inserters in shuttleless looms Download PDF

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Publication number
EP0402285B1
EP0402285B1 EP90420270A EP90420270A EP0402285B1 EP 0402285 B1 EP0402285 B1 EP 0402285B1 EP 90420270 A EP90420270 A EP 90420270A EP 90420270 A EP90420270 A EP 90420270A EP 0402285 B1 EP0402285 B1 EP 0402285B1
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EP
European Patent Office
Prior art keywords
supporting
inserter
inserters
guiding
guiding device
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Expired - Lifetime
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EP90420270A
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German (de)
French (fr)
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EP0402285A1 (en
Inventor
Christian Riolet
Giuseppe Casarotto
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Saurer Diederichs SA
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Saurer Diederichs SA
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    • 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
    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/18—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick two weft inserters meeting at or near the middle of the shed and transferring the weft from one to the other

Definitions

  • the present invention relates to a support and guiding device for mechanical insertion members of the weft, in a weaving machine without shuttle.
  • This invention relates to the support, and to the longitudinal and lateral guidance, of mechanical members such as spears or ribbons, moved in an alternating movement and in opposite directions and introduced between the layers of warp yarns, with a first member of insertion driving the weft thread from one side of the weaving machine to the middle of the width of the fabric being formed, and a second insertion member taking up the weft thread in the middle of the width of the fabric to pull it up '' on the opposite side of the machine, each insertion member comprising at its end a clamp capable of gripping the weft thread to be inserted and cooperating with a mechanism for controlling the opening of this clamp situated towards the middle of the fabric, in the exchange zone, while means are provided for supporting and guiding the insertion members.
  • mechanical members such as spears or ribbons
  • the present invention aims to eliminate these drawbacks, by providing an improved support and guide device for the insertion members, this device ensuring the reaction to the force of opening of the clamps by the control mechanism, in the middle zone. exchange, while avoiding damaging the warp threads, and also reducing the wear of certain mechanical parts.
  • the support and guide device for mechanical weft insertion members, comprises in the central exchange zone and for each insertion member at least one support and guide assembly , combining means for lateral and longitudinal guidance of the insertion members, at least one bearing surface situated under the heads of these insertion members in the advanced position, the bearing surface being substantially perpendicular to the direction of the force of opening of the clamp, and deflecting means ensuring the spacing of the warp threads of the lower ply, on either side of said bearing surface.
  • each insertion member there are provided for each insertion member one or more support and guide assemblies, as defined above.
  • the force of opening of the clamps is entirely taken up by the bearing surface (s), while the warp threads, being laterally spaced from each bearing surface by the deflecting means, no longer risk being trapped at all between the insertion member and a support element.
  • each support and guide assembly is constituted by a part comprising at least one hook-shaped part ensuring the lateral guidance of the insertion member , and itself carrying the bearing surface for the head of this insertion member.
  • the bearing surface may belong to a plate, for example made of metal carbide, attached to the part comprising the hook-shaped part.
  • the material of this insert insert facilitates the sliding of the insertion member, while avoiding wear.
  • the deflecting means capable of spreading the warp threads consist of the hook-shaped part itself, which leads to a grouping of all the functions on the same piece, therefore to a particularly simple and economical embodiment, both in manufacturing and in assembly.
  • the use of a separate element for the wire deflection function cannot be excluded, as a variant.
  • FIG. 1 is a partial sectional view of a weaving machine, in which the insertion of the weft thread is ensured by two mechanical members moved in opposite directions, one driving the weft thread from one side of the machine to the middle of the width of the fabric 1 in formation, and the other taking up this weft thread in the middle of the width of the fabric 1 to pull it to the opposite side of the machine.
  • Each insertion member 2 is shaped like a needle or ribbon, the end or head of which carries a clamp 3 capable of gripping the weft thread to be inserted.
  • the insertion members 2 are supported, and guided in translation, by means designated as a whole by 4 in the drawing, where the comb is further indicated in 5 and in 6 the mechanism which controls the opening of the clamps 3, towards the middle of the fabric 1, for the exchange of the weft thread from one insertion member 2 to the other.
  • the opening control mechanism 6 may include, for each clamp 3, a lever 7 itself actuated from a rotary cam 8, in a manner known per se.
  • the means 4 for supporting and guiding the insertion members 2, shown in more detail in FIG. 2, comprise a support strip 9 which extends over the entire width of the fabric and which supports a series of guide members , distributed over the length of the support strip 9 and fixed on the latter by means of screws 10.
  • the guide members are constituted by staggered hooks 11 and 12, shaped so as to receive and guide alternately an edge of the insertion member 2 and the opposite edge of this member 2.
  • These lateral guide members 11 and 12 allow the insertion members 2 to pass over the lower ply of the warp threads 13, without the insertion members 2 or their heads rubbing on these threads 13, or on the comb 5, at any time.
  • the lateral guide members 11 and 12 have a shape studied so as not to hook the warp threads themselves.
  • the support and guide members are constituted by other hooks 14 and 15, of special conformation.
  • Each member 14 or 15 has a part 16 or 17, bent in a hook, ensuring lateral guidance of one edge or the other of the insertion member 2, and a bearing surface 18 taking place under the member Insertion 2, when the head of this organ is advanced into the median region.
  • the bearing surface 18 is located under the central part of the insertion member 2 in the advanced position, that is to say the part located towards the longitudinal axis of this member 2 and not towards its edges.
  • the bearing surface 18 may belong to a metal carbide plate, attached to the support and guide member 14 or 15 itself made of treated steel.
  • the heads of the insertion members 2 are located in line with the support and guide members 14 and 15 which have just been described.
  • the lever 7 acts on the corresponding clamp 3, in the direction indicated by an arrow F (see FIG. 1), the force is absorbed by the bearing surfaces 18 which then ensure the reaction to the opening force of the pliers.
  • this action is carried out without risk of deterioration of the warp yarns of the lower ply 13 which, as shown in FIG. 3, are separated laterally by the respective hooked parts 16 and 17 of the support and guide members 14 and 15.
  • the number of these support and guide members 14 and 15 is variable, depending on the size of the area concerned by the opening efforts of the clamps 3.
  • these plates are optional, and it is perfectly possible to envisage support and guide members 14 and 15 made in one piece, the support face 18 being an integral part.

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

Description

La présente invention concerne un dispositif de support et de guidage pour organes d'insertion mécanique de la trame, dans une machine à tisser sans navette.The present invention relates to a support and guiding device for mechanical insertion members of the weft, in a weaving machine without shuttle.

Cette invention est relative au support, et au guidage longitudinal et latéral, d'organes mécaniques tels que des lances ou des rubans, déplacés selon un mouvement alternatif et en sens opposés et introduits entre les nappes de fils de chaîne, avec un premier organe d'insertion entraînant le fil de trame depuis un côté de la machine à tisser jusqu'au milieu de la largeur du tissu en formation, et un second organe d'insertion reprenant le fil de trame au milieu de la largeur du tissu pour le tirer jusqu'au côté opposé de la machine, chaque organe d'insertion comportant à son extrémité une pince apte à saisir le fil de trame à insérer et coopérant avec un mécanisme de commande d'ouverture de cette pince situé vers le milieu du tissu, dans la zone d'échange, tandis que des moyens sont prévus pour le support et le guidage des organes d'insertion.This invention relates to the support, and to the longitudinal and lateral guidance, of mechanical members such as spears or ribbons, moved in an alternating movement and in opposite directions and introduced between the layers of warp yarns, with a first member of insertion driving the weft thread from one side of the weaving machine to the middle of the width of the fabric being formed, and a second insertion member taking up the weft thread in the middle of the width of the fabric to pull it up '' on the opposite side of the machine, each insertion member comprising at its end a clamp capable of gripping the weft thread to be inserted and cooperating with a mechanism for controlling the opening of this clamp situated towards the middle of the fabric, in the exchange zone, while means are provided for supporting and guiding the insertion members.

Dans ce genre de machine à tisser, comme l'illustre par exemple le brevet français N° 2 529 591, la commande d'ouverture des pinces dans la zone d'échange située vers le milieu du tissu est assurée par un mécanisme à levier agissant sur la tête de chaque organe d'insertion, pourvue de la pince. Les organes d'insertion sont eux-mêmes supportés par des patins ou platines de guidage et d'appui, répartis sur toute la largeur du tissu. La structure connue possède l'inconvénient principal suivant: dans la zone médiane d'échange où une platine d'appui encaisse l'effort d'ouverture de la pince exercé par le levier précité, il se produit un pincement des fils de chaîne de la nappe inférieure, avec un risque sérieux de détérioration de ces fils de chaîne. On peut aussi constater, avec cette réalisation connue, une usure importante de certaines parties de la machine, notamment une usure des organes d'insertion tels que rubans au contact des pièces de guidage et d'appui.In this kind of weaving machine, as illustrated for example by French patent No. 2,529,591, the opening control of the pliers in the exchange zone located towards the middle of the fabric is ensured by a lever mechanism acting on the head of each insertion member, provided with the clamp. The insertion members are themselves supported by pads or guide and support plates, distributed over the entire width of the fabric. The known structure has the following main drawback: in the central exchange zone where a support plate collects the force of opening of the clamp exerted by the aforementioned lever, there is a pinching of the warp threads of the lower layer, with a serious risk of deterioration of these warp threads. We can also note, with this known embodiment, significant wear of certain parts of the machine, in particular wear of the insertion members such as ribbons in contact with the guide and support parts.

La présente invention vise à éliminer ces inconvénients, en fournissant un dispositif perfectionné de support et de guidage pour les organes d'insertion, ce dispositif assurant la réaction à l'effort d'ouverture des pinces par le mécanisme de commande, dans la zone médiane d'échange, tout en évitant d'abîmer les fils de chaîne, et en réduisant aussi l'usure de certaines pièces mécaniques.The present invention aims to eliminate these drawbacks, by providing an improved support and guide device for the insertion members, this device ensuring the reaction to the force of opening of the clamps by the control mechanism, in the middle zone. exchange, while avoiding damaging the warp threads, and also reducing the wear of certain mechanical parts.

A cet effet, le dispositif de support et de guidage selon l'invention, pour organes d'insertion mécanique de la trame, comprend dans la zone médiane d'échange et pour chaque organe d'insertion au moins un ensemble de support et de guidage, combinant des moyens de guidage latéral et longitudinal des organes d'insertion, au moins une surface d'appui située sous les têtes de ces organes d'insertion en position avancée, la surface d'appui étant sensiblement perpendiculaire à la direction de l'effort d'ouverture de la pince, et des moyens déviateurs assurant l'écartement des fils de chaîne de la nappe inférieure, de part et d'autre de ladite surface d'appui.To this end, the support and guide device according to the invention, for mechanical weft insertion members, comprises in the central exchange zone and for each insertion member at least one support and guide assembly , combining means for lateral and longitudinal guidance of the insertion members, at least one bearing surface situated under the heads of these insertion members in the advanced position, the bearing surface being substantially perpendicular to the direction of the force of opening of the clamp, and deflecting means ensuring the spacing of the warp threads of the lower ply, on either side of said bearing surface.

Selon l'importance de la zone d'échange concernée par les efforts d'ouverture à encaisser, on prévoit pour chaque organe d'insertion un ou plusieurs ensembles de support et de guidage, tels que définis ci-dessus. L'effort d'ouverture des pinces est entièrement repris par la ou les surfaces d'appui, tandis que les fils de chaîne, étant écartés latéralement de chaque surface d'appui par les moyens déviateurs, ne risquent plus du tout d'être coincés entre l'organe d'insertion et un elément d'appui.Depending on the size of the exchange zone concerned by the opening forces to be collected, there are provided for each insertion member one or more support and guide assemblies, as defined above. The force of opening of the clamps is entirely taken up by the bearing surface (s), while the warp threads, being laterally spaced from each bearing surface by the deflecting means, no longer risk being trapped at all between the insertion member and a support element.

Dans une forme de réalisation préférée du dispositif de support et de guidage selon l'invention, chaque ensemble de support et de guidage est constitué par une pièce comportant au moins une partie en forme de crochet assurant le guidage latéral de l'organe d'insertion, et portant elle-même la surface d'appui pour la tête de cet organe d'insertion.In a preferred embodiment of the support and guide device according to the invention, each support and guide assembly is constituted by a part comprising at least one hook-shaped part ensuring the lateral guidance of the insertion member , and itself carrying the bearing surface for the head of this insertion member.

La surface d'appui peut appartenir à une plaquette, par exemple en carbure métallique, rapportée sur la pièce comportant la partie en forme de crochet. Le matériau de cette plaquette rapportée facilite le glissement de l'organe d'insertion, tout en évitant l'usure.The bearing surface may belong to a plate, for example made of metal carbide, attached to the part comprising the hook-shaped part. The material of this insert insert facilitates the sliding of the insertion member, while avoiding wear.

De préférence, les moyens déviateurs aptes à écarter les fils de chaîne sont constitués par la partie en forme de crochet elle-même, ce qui conduit à un regroupement de toutes les fonctions sur une même pièce, donc à une réalisation particulièrement simple et économique, aussi bien en fabrication qu'en montage. Toutefois, l'emploi d'un élément distinct pour la fonction de déviation des fils n'est pas à exclure, en variante.Preferably, the deflecting means capable of spreading the warp threads consist of the hook-shaped part itself, which leads to a grouping of all the functions on the same piece, therefore to a particularly simple and economical embodiment, both in manufacturing and in assembly. However, the use of a separate element for the wire deflection function cannot be excluded, as a variant.

Dans le cas d'une pluralité d'ensembles de support et de guidage tels que définis ci-dessus, on prévoit avantageusement l'utilisation d'au moins deux pièces dont les parties en forme de crochets respectives sont agencées en quinconce, pour assurer le guidage de bords opposés de l'organe d'insertion, chacune de ces pièces portant une surface d'appui prenant place sous la tête de cet organe d'insertion en position avancée.In the case of a plurality of support and guide assemblies as defined above, provision is advantageously made for the use of at least two parts, the respective hook-shaped parts of which are arranged in staggered rows, to ensure the guiding opposite edges of the insertion member, each of these parts carrying a bearing surface taking place under the head of this insertion member in the advanced position.

De toute façon, l'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexe représentant, à titre d'exemple non limitatif, une forme d'exécution de ce dispositif de support et de guidage pour organes d'insertion mécanique de la trame, dans une machine à tisser sans navette :

  • Figure 1 est une vue en coupe transversale, très schématique, du dispositif objet de l'invention, avec indication du mécanisme de commande d'ouverture des pinces et d'autres parties voisines de la machine à tisser ;
  • Figure 2 est une vue en perspective montrant, de manière plus détaillée, les moyens de support et de guidage des organes d'insertion de la trame ;
  • Figure 3 est une vue en plan par dessus partielle desdits moyens, illustrant leur action sur la nappe inférieure des fils de chaîne.
In any case, the invention will be better understood using the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting example, an embodiment of this support and guiding device for mechanical weft insertion members, in a weaving machine without shuttle :
  • Figure 1 is a very schematic cross-sectional view of the device which is the subject of the invention, with an indication of the mechanism for controlling the opening of the clamps and other neighboring parts of the weaving machine;
  • Figure 2 is a perspective view showing, in more detail, the means for supporting and guiding the weft insertion members;
  • Figure 3 is a partial plan view from above of said means, illustrating their action on the lower ply of warp son.

La figure 1 est une vue partielle en coupe d'une machine à tisser, dans laquelle l'insertion du fil de trame est assurée par deux organes mécaniques déplacés en sens opposés, l'un entraînant le fil de trame depuis un côté de la machine jusqu'au milieu de la largeur du tissu 1 en formation, et l'autre reprenant ce fil de trame au milieu de la largeur du tissu 1 pour le tirer jusqu'au côté opposé de la machine. Chaque organe d'insertion 2 est conformé comme une aiguille ou un ruban, dont l'extrémité ou tête porte une pince 3 apte à saisir le fil de trame à insérer. Les organes d'insertion 2 sont supportés, et guidés en translation, par des moyens désignés dans leur ensemble par 4 sur le dessin, où l'on a encore indiqué en 5 le peigne et en 6 le mécanisme qui commande l'ouverture des pinces 3, vers le milieu du tissu 1, pour l'échange du fil de trame d'un organe d'insertion 2 à l'autre. Comme le montre la figure 1, le mécanisme 6 de commande d'ouverture peut comprendre, pour chaque pince 3, un levier 7 lui-même actionné à partir d'une came rotative 8, d'une manière connue en soi.Figure 1 is a partial sectional view of a weaving machine, in which the insertion of the weft thread is ensured by two mechanical members moved in opposite directions, one driving the weft thread from one side of the machine to the middle of the width of the fabric 1 in formation, and the other taking up this weft thread in the middle of the width of the fabric 1 to pull it to the opposite side of the machine. Each insertion member 2 is shaped like a needle or ribbon, the end or head of which carries a clamp 3 capable of gripping the weft thread to be inserted. The insertion members 2 are supported, and guided in translation, by means designated as a whole by 4 in the drawing, where the comb is further indicated in 5 and in 6 the mechanism which controls the opening of the clamps 3, towards the middle of the fabric 1, for the exchange of the weft thread from one insertion member 2 to the other. As shown in Figure 1, the opening control mechanism 6 may include, for each clamp 3, a lever 7 itself actuated from a rotary cam 8, in a manner known per se.

Les moyens 4 de support et de guidage des organes d'insertion 2, représentés plus en détail sur la figure 2, comprennent une réglette-support 9 qui s'étend sur toute la largeur du tissu et qui supporte une série d'organes de guidage, répartis sur la longueur de la réglette-support 9 et fixés sur cette dernière au moyen de vis 10.The means 4 for supporting and guiding the insertion members 2, shown in more detail in FIG. 2, comprise a support strip 9 which extends over the entire width of the fabric and which supports a series of guide members , distributed over the length of the support strip 9 and fixed on the latter by means of screws 10.

Si l'on exclut la région médiane où s'effectue l'échange, les organes de guidage sont constitués par des crochets en quinconce 11 et 12, conformés de manière à recevoir et guider alternativement un bord de l'organe d'insertion 2 et le bord opposé de cet organe 2. Ces organes de guidage latéral 11 et 12 permettent aux organes d'insertion 2 de passer au-dessus de la nappe inférieure des fils de chaîne 13, sans que les organes d'insertion 2 ou leurs têtes ne viennent frotter sur ces fils 13, ou sur le peigne 5, à aucun moment. De plus, les organes de guidage latéral 11 et 12 possèdent une forme étudiée de manière à ne pas accrocher eux-mêmes les fils de chaîne.If we exclude the middle region where the exchange takes place, the guide members are constituted by staggered hooks 11 and 12, shaped so as to receive and guide alternately an edge of the insertion member 2 and the opposite edge of this member 2. These lateral guide members 11 and 12 allow the insertion members 2 to pass over the lower ply of the warp threads 13, without the insertion members 2 or their heads rubbing on these threads 13, or on the comb 5, at any time. In addition, the lateral guide members 11 and 12 have a shape studied so as not to hook the warp threads themselves.

Dans la région médiane, où s'effectue l'échange sous l'effet du mécanisme de commande 6, les organes de support et de guidage sont constitués par d'autres crochets 14 et 15, de conformation spéciale. Chaque organe 14 ou 15 possède une partie 16 ou 17, recourbée en crochet, assurant le guidage latéral d'un bord ou l'autre de l'organe d'insertion 2, et une surface d'appui 18 prenant place sous l'organe d'insertion 2, lorsque la tête de cet organe est avancée jusque dans la région médiane. Plus particulièrement, la surface d'appui 18 est située sous la partie centrale de l'organe d'insertion 2 en position avancée, c'est-à-dire la partie située vers l'axe longitudinal de cet organe 2 et non vers ses bords. La surface d'appui 18 peut appartenir à une plaquette en carbure métallique, rapportée sur l'organe de support et de guidage 14 ou 15 réalisé lui-même en acier traité.In the middle region, where the exchange takes place under the effect of the control mechanism 6, the support and guide members are constituted by other hooks 14 and 15, of special conformation. Each member 14 or 15 has a part 16 or 17, bent in a hook, ensuring lateral guidance of one edge or the other of the insertion member 2, and a bearing surface 18 taking place under the member Insertion 2, when the head of this organ is advanced into the median region. More particularly, the bearing surface 18 is located under the central part of the insertion member 2 in the advanced position, that is to say the part located towards the longitudinal axis of this member 2 and not towards its edges. The bearing surface 18 may belong to a metal carbide plate, attached to the support and guide member 14 or 15 itself made of treated steel.

Au moment de l'échange, les têtes des organes d'insertion 2 se situent au droit des organes de support et de guidage 14 et 15 qui viennent d'être décrits. Lorsque le levier 7 agit sur la pince 3 correspondante, dans le sens indiqué par une flèche F (voir figure 1), l'effort est encaisse par les surfaces d'appui 18 qui assurent alors la réaction à la force d'ouverture de la pince. De plus, cette action s'effectue sans risque de détérioration des fils de chaîne de la nappe inférieure 13 qui, comme le montre la figure 3, sont écartés latéralement par les parties en crochets respectives 16 et 17 des organes de support et de guidage 14 et 15.At the time of the exchange, the heads of the insertion members 2 are located in line with the support and guide members 14 and 15 which have just been described. When the lever 7 acts on the corresponding clamp 3, in the direction indicated by an arrow F (see FIG. 1), the force is absorbed by the bearing surfaces 18 which then ensure the reaction to the opening force of the pliers. In addition, this action is carried out without risk of deterioration of the warp yarns of the lower ply 13 which, as shown in FIG. 3, are separated laterally by the respective hooked parts 16 and 17 of the support and guide members 14 and 15.

Le nombre de ces organes de support et de guidage 14 et 15 est variable, selon l'importance de la zone concernée par les efforts d'ouverture des pinces 3.The number of these support and guide members 14 and 15 is variable, depending on the size of the area concerned by the opening efforts of the clamps 3.

Les plaquettes rapportées en carbure métallique, formant les surfaces d'appui 18, favorisent le glissement des organes d'insertion 2 tout en évitant l'usure de ces organes 2 par l'effet du frottement. Toutefois, ces plaquettes sont facultatives, et l'on peut parfaitement envisager des organes de support et de guidage 14 et 15 réalisés d'une seule pièce, la face d'appui 18 en faisant partie intégrante.The inserts of metal carbide, forming the bearing surfaces 18, promote the sliding of the insertion members 2 while preventing wear of these members 2 by the effect of friction. However, these plates are optional, and it is perfectly possible to envisage support and guide members 14 and 15 made in one piece, the support face 18 being an integral part.

Il va de soi, et il ressort de ce qui précède, que l'invention ne se limite pas à la seule forme d'exécution de ce dispositif de support et de guidage pour organes d'insertion de la trame qui a été décrite ci-dessus, à titre d'exemple ; elle en embrasse, au contraire, toutes les variantes de réalisation et d'application respectant le même principe, et c'est ainsi, notamment, que l'on ne s'éloignerait pas du cadre de l'invention en modifiant les formes ou les matériaux des organes de support et de guidage des organes d'insertion, ou encore en adaptant l'invention à des machines à tisser avec organes d'insertion de types variés : organes d'insertion rigides (aiguilles), organes déformables (rubans), lances télescopiques, etc.It goes without saying, and it appears from the foregoing, that the invention is not limited to the sole embodiment of this support and guide device for weft insertion members which has been described above. above, at example title; on the contrary, it embraces all of the variant embodiments and applications respecting the same principle, and it is thus, in particular, that one would not depart from the scope of the invention by modifying the forms or the materials of the support and guiding members of the insertion members, or by adapting the invention to weaving machines with insertion members of various types: rigid insertion members (needles), deformable members (ribbons), telescopic lances, etc.

Claims (6)

  1. A supporting and guiding device (4) for mechanical weft inserters in a shuttless loom, such as nozzles or bands, performing an alternating movement and introduced between the warp thread laps, with a first inserter (2) driving the weft thread from one side of the loom as far as the middle of the width of the material (1) being formed, and a second inserter (2) taking over the weft thread at the middle of the width of the material (1) to pull it as far as the opposite side of the machine, each inserter (2) including at its end a gripper (3) adapted to capture the weft thread to be inserted and cooperating with a mechanism (6) for controlling the opening of this gripper (3) located towards the middle of the material (1) in the exchange zone, characterised in that it includes, in the median exchange zone and for each inserter (2), at least one supporting and guiding assembly (14, 15), combining lateral and longitudinal guiding means (16, 17) of the inserters (2), at least one support surface (18) located under the heads (3) of these inserters (2) in forward position, the support surface (18) being substantially perpendicular to the direction (F) of the opening force of the gripper (3), and deflection means (16, 17) to either side of said support surface (18), ensuring the separation of the warp threads of the lower lap (13).
  2. A supporting and guiding device for inserters according to Claim 1, characterised in that each supporting and guiding assembly is constituted by a component (14, 15) including at least one part in the form of a hook (16, 17) ensuring the lateral guiding of the inserter (2) and itself carrying the support surface (18) for the head (3) of this inserter (2).
  3. A supporting and guiding device for inserters according to Claim 2, characterised in that the support surface (18) forms part of a plate, for example of metal. carbide, connected to the component (14, 15) including the portion in the form of a hook (16, 17).
  4. A supporting and guiding device for inserters according to Claim or 3, characterised in that the deflector means adapted to separate the warp threads (13) are constituted by the portion in the form of a hook (16, 17) itself of each aforesaid component (14, 15).
  5. A supporting and guiding device for inserters according to any one of Claims 2 to 4, characterised in that it includes, for each inserter (2), a plurality of supporting and guiding assemblies constituted by at least two components (14, 15) of which the respective parts in the form of hooks (16, 17) are arranged in staggered relationship to ensure the guiding of the opposed edges of the inserter (2), each of these parts (14, 15) carrying a support surface (18) located under the head (3) of this inserter (2) in advanced position.
  6. A supporting and guiding device for inserters according to any one of Claims 1 to 5, characterised in that the support surfaces (18) are located under the central parts of the inserters (2) in the advanced position.
EP90420270A 1989-06-09 1990-06-05 Supporting and guiding device for mechanical weft inserters in shuttleless looms Expired - Lifetime EP0402285B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908142A FR2648161B1 (en) 1989-06-09 1989-06-09 SUPPORT AND GUIDANCE DEVICE FOR MECHANICAL WEFT INSERTION DEVICES IN A NON-SHUTTLE WEAVING MACHINE
FR8908142 1989-06-09

Publications (2)

Publication Number Publication Date
EP0402285A1 EP0402285A1 (en) 1990-12-12
EP0402285B1 true EP0402285B1 (en) 1994-01-26

Family

ID=9382901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420270A Expired - Lifetime EP0402285B1 (en) 1989-06-09 1990-06-05 Supporting and guiding device for mechanical weft inserters in shuttleless looms

Country Status (7)

Country Link
US (1) US5092374A (en)
EP (1) EP0402285B1 (en)
JP (1) JPH0397938A (en)
BR (1) BR9002748A (en)
CS (1) CS275691B6 (en)
DE (1) DE69006265D1 (en)
FR (1) FR2648161B1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4000686A1 (en) * 1990-01-12 1991-07-18 Dornier Gmbh Lindauer BRIDGE SHOE SOLE FOR A GRIPPER WEAVING MACHINE
EP0557723B1 (en) * 1992-02-28 1997-05-21 Lindauer Dornier Gesellschaft M.B.H Inserting tapes or rods guiding device for looms
DE9413172U1 (en) * 1994-08-16 1994-10-13 Textilma Ag, Hergiswil Rapier weaving machine
IT1271130B (en) * 1994-11-30 1997-05-26 Vamatex Nuova Spa MEANS TO GUIDE THE MOTORCYCLE OF A PAIR OF CLAMPS INSIDE THE PITCH OF WEAVING FRAMES
DE29506561U1 (en) * 1995-04-18 1995-06-08 Textilma Ag, Hergiswil Weaving machine
DE19713628A1 (en) * 1997-04-02 1998-10-08 Picanol Nv Rapier weaving machine
KR100435507B1 (en) * 2001-04-18 2004-06-09 김영호 Gripper tape guiding unit for rapier loom
US20090293983A1 (en) * 2008-05-28 2009-12-03 Itema (Switzerland) Ltd. Apparatus And Method For The Insertion Of A Weft Thread In A Rapier Weaving Machine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1598697A (en) * 1968-12-24 1970-07-06
US4076053A (en) * 1975-07-10 1978-02-28 Albatex A.G. Means guiding the straps of the weft carrying grippers inside the shed
DE3224708C2 (en) * 1982-07-02 1984-04-26 Florian Dipl.-Ing. 8990 Lindau Windischbauer Device for the inevitable actuation of the clamping device of weft thread insertion organs on shuttleless looms
DE3320200C2 (en) * 1983-06-03 1985-06-13 Lindauer Dornier Gmbh, 8990 Lindau Device for the inevitable actuation of the clamping device of weft thread insertion organs in shuttleless looms
EP0165327B1 (en) * 1984-06-19 1988-08-17 GebràœDer Sulzer Aktiengesellschaft Guideway for the weft inserter of a loom, especially for a dummy shuttle loom
EP0165326B1 (en) * 1984-06-19 1988-08-24 GebràœDer Sulzer Aktiengesellschaft Guideway for the weft inserter of a loom, especially for a dummy shuttle loom
DE3512303C1 (en) * 1985-04-04 1986-06-12 Lindauer Dornier Gmbh, 8990 Lindau Setup on contactless weaving machines with weft insertion by means of gripper bars provided with clamping devices
DE3561477D1 (en) * 1985-05-03 1988-02-25 Sulzer Ag Weft insertion device for a gripper shuttle loom
EP0199880A1 (en) * 1985-05-03 1986-11-05 GebràœDer Sulzer Aktiengesellschaft Weft insertion device for looms, especially for gripper shuttle looms

Also Published As

Publication number Publication date
CS275290A3 (en) 1992-03-18
DE69006265D1 (en) 1994-03-10
EP0402285A1 (en) 1990-12-12
FR2648161B1 (en) 1991-10-04
US5092374A (en) 1992-03-03
FR2648161A1 (en) 1990-12-14
JPH0397938A (en) 1991-04-23
BR9002748A (en) 1991-08-20
CS275691B6 (en) 1992-03-18

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