EP0145615B1 - Process for manufacturing woven tapes with localized tightened parts woven on an automatic sickle loom and device for carrying out this process - Google Patents

Process for manufacturing woven tapes with localized tightened parts woven on an automatic sickle loom and device for carrying out this process Download PDF

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Publication number
EP0145615B1
EP0145615B1 EP84420183A EP84420183A EP0145615B1 EP 0145615 B1 EP0145615 B1 EP 0145615B1 EP 84420183 A EP84420183 A EP 84420183A EP 84420183 A EP84420183 A EP 84420183A EP 0145615 B1 EP0145615 B1 EP 0145615B1
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Prior art keywords
strap
weft
slay
weaving
loom
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German (de)
French (fr)
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EP0145615A1 (en
EP0145615B2 (en
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Georges Chardon
André Chomienne
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Faure-Roux (societe A Responsabilite Limitee)
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Faure-Roux (societe A Responsabilite Limitee)
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Priority to AT84420183T priority Critical patent/ATE40160T1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D3/00—Woven fabrics characterised by their shape
    • D03D3/06—Fabrics of varying width

Definitions

  • the invention relates to straps with locally transverse constrictions arranged over variable lengths intended to ensure positioning of said straps in a fixing means such as a mooring loop.
  • the straps obtained on the shuttle loom have irregularities in presentation, flexibility and thickness, particularly in the face of shrinkage.
  • their cost price is high due to a low yield resulting from the low speed at which this type of profession works.
  • the present invention has set itself the aim, in a simple, efficient and rational manner, of making straps with transverse narrowing, on automatic sickle looms.
  • the invention as characterized in the claims solves the problem of creating a strap which has identical weave, over their entire length, or possibly several weaves, with selvedges common to the rectilinear parts and narrowed parts, said selvedges being obtained on one side by a succession of chains formed by the working of the needle of the trade, with or without filler threads, whatever the system of tying the weft and on the opposite side by the simple return of the weft relative to the warp threads.
  • a V-shaped comb is inclined relative to the axis of the leaf, such that the end blade of the comb forms an angle a relative to the axis of said leaf so that said blade always remains at a constant distance parallel to the selvedge formation needle during the displacement in height of the comb to allow the weaving of the narrowed parts and the connecting parts; the movement of the comb is controlled, on the one hand, with a weft-giving device to ensure the variation in running speed, taking into account the narrower width of the strap, and on the other hand, with a tension regulating device of the strap for its call and evacuation, taking into account the striking force of the leaf acting on a lesser width of the strap.
  • the leaf of the sickle loom receives a vertical slide, fixed angularly, in an oblique manner being shaped to receive a movable slide intended for mounting a comb. with blades arranged symmetrically in the form of a V to obtain, depending on its height positioning, the variation in the spacing of the warp threads; the end blade of said comb being inclined along a plane parallel to the working plane of the needle used to form the chain stitches of the edge of the strap so as to obtain the continuity of the edge during the weaving of the narrowed parts; the displacement in height of the movable comb-carrying slide is ensured by a jack fixed on the leaf or on a fixed part of the loom; said piston being controlled according to a stroke determined by the pulses of a sensor arranged opposite the axis of the leaf or any other moving member; the weft donor device is controlled by a speed variator coupled to the comb control system; said device authorizing the slowing down of the linear speed of the weft distributor
  • the automatic sickle loom is equipped for obtaining straps with localized transverse constrictions, a slide (1) fixed angularly on the base of the leaf (B) so as to occupy an inclined position, as illustrated in Figures 7 and 9 of the drawings.
  • the slide (1) authorizes the free sliding guidance of a comb-carrying slide (2) in the shape of a stirrup whose trapezoidal cut-out allows the free passage of the web of warp threads (F) biased in the known manner, by the sickle (3) for feeding the weft thread (T).
  • the slide (2) allows the right of its opening, the facial attachment of a comb (4) whose blades (4a) are arranged symmetrically in a V shape, so as to obtain between said blades, a maximum spacing at the right of the large base, and on the contrary a minimum spacing to the right of the small base.
  • the displacement in height of the slide (2) makes it possible to distance or bring together the warp threads (F) to obtain either the normal width of the strap, or the reduced width with progressive flaring of connection of these two parts.
  • weft can be linked according to several known systems, in particular by the system with one or more filler wires, obtained by the use of the finger (13) inherent in the automatic sickle loom.
  • the means of displacement in height in both directions of the comb-carrying slide (2) is provided, for example, by means of a jack (6) fixed on the leaf (B) of the loom, or even on a fixed part, the piston of which is connected to said slide (2) either by pneumatic means or by mechanical means.
  • the piston of said cylinder (6) is controlled automatically by means of each pulse from a sensor (7) arranged opposite a mobile member of the trade such as the wing (B), following a stroke of determined and adjustable length. .
  • the narrowing operation of the strap (S) is progressive so as to obtain at will, on the one hand, flares (Sa-Sb) of connection of variable lengths and, on the other hand, narrowed widths ( 1a-1b) of variable dimensions, taking into account the amplitude of the stroke of the comb (4).
  • flares (Sa-Sb) of connection of variable lengths and, on the other hand, narrowed widths ( 1a-1b) of variable dimensions, taking into account the amplitude of the stroke of the comb (4).
  • the pulses from the sensor (7) are transmitted to an electronic box (8) provided with counters, which distributes said necessary pulses, simultaneously by means of displacement in height of the comb, to a weft donor (10 ) and to a woven strap draft regulator as illustrated in figure 11.
  • the weft donor device is slaved to a speed variator (9) coupled to the control system (6) of the comb (4) via the electronic unit (8), to act on a weft distributor (10) .
  • the weft donor (10) (T) thus automatically allows the proportional slowing down of the distribution during the weaving of the narrowed widths (1a-1b) and the flares (Sa Sb), to avoid the floating and the relaxation of the tension.
  • This distributor (10) can be of any known type, such as close conical flanges, according to FIG. 11, or else of the semi positive type.
  • the tension regulator acting on the receiving roller (12) of the strap (S) is controlled by a speed variator (11) also coupled to the comb control system (4) via the electronic control unit. (8). This results in a greater proportional force during the weaving of the narrowed parts (1a-1b) and the flares (Sa-Sb), to compensate for the greater striking force of the leaf (B) since it is exerted on a narrower width .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • External Artificial Organs (AREA)
  • Materials For Medical Uses (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The invention concerns woven straps having transverse contractions, as well as a method and apparatus for their manufacture. Contractions are formed along straps having a continuous unchanging weave and continuous selvedge by altering spacing of warp yarns during weaving. The warp yarns are spaced by a V or fan shaped support which is vertically movable to cause corresponding width variations in the straps.

Description

L'invention concerne des sangles avec localement des rétrécissements transversaux disposés sur des longueurs variables destinés à assurer un positionnement desdites sangles dans un moyen de fixation tel que boucle d'amarrage.The invention relates to straps with locally transverse constrictions arranged over variable lengths intended to ensure positioning of said straps in a fixing means such as a mooring loop.

Ces sangles sont obtenues sur des métiers navettes, soit au moyen de changement de texture intervenant au droit des rétrécissements, soit en éliminant des fils de chaîne, soit en exerçant un effort de tension sur le fil de trame en vue d'assurer le rapprochement transversal des fils de chaîne, soit encore en utilisant des peignes spéciaux. On peut par exemple citer le brevet FR 1.395 815 qui enseigne la réalisation d'un tissu avec des rétrécissements sur un métier à navettes, notamment pour l'exécution de cravates.These straps are obtained on shuttle looms, either by means of a change in texture occurring at the level of the narrowing, or by eliminating warp threads, or by exerting a tension force on the weft thread in order to ensure transverse approximation. warp threads, or again using special combs. One can for example quote the patent FR 1.395 815 which teaches the realization of a fabric with narrowing on a loom with shuttles, in particular for the execution of ties.

Les sangles obtenues sur métier à navettes, présentent des irrégularités de présentation, de souplesse et d'épaisseur notamment au droit des rétrécissements. De plus, leur prix de revient est élevé par suite d'un faible rendement résultant de la faible vitesse à laquelle travaille ce type de métier.The straps obtained on the shuttle loom have irregularities in presentation, flexibility and thickness, particularly in the face of shrinkage. In addition, their cost price is high due to a low yield resulting from the low speed at which this type of profession works.

Pour remédier à ces inconvénients, il est apparu nécessaire de réaliser des sangles tissées avec rétrécissements localisés, sur des métiers automatiques à faucilles dont la cadence de production est très élevée. Il est connu de réaliser, sur ce type de métier, des sangles droites, sans rétrécissement, comme il ressort du brevet FR 1.249 099.To overcome these drawbacks, it appeared necessary to produce woven straps with localized narrowing, on automatic sickle looms whose production rate is very high. It is known to produce, on this type of trade, straight straps, without shrinking, as is apparent from patent FR 1,249,099.

Afin de pouvoir exécuter ce genre d'article sur des métiers automatiques à faucilles, il a fallu résoudre d'importants problèmes techniques qui ne se posaient pas dans un métier à navettes. Par exemple, il s'avère indispensable de maintenir constant la distance entre la lame extrême du peigne et l'aiguille pour obtenir la continuité de formation de la chaînette au droit des lisières rectilignes de largeur normale ou réduite, et des lisières évasées de raccordement.In order to be able to execute this kind of article on automatic sickle looms, it was necessary to solve important technical problems which did not arise in a shuttle loom. For example, it is essential to keep the distance between the end blade of the comb and the needle constant in order to obtain the continuity of formation of the chain in line with the straight edges of normal or reduced width, and flared connecting edges.

Un tel problème n'existe pas dans un métier à navettes où le peigne est simplement animé d'un mouvement alternatif vertical de bas en haut.Such a problem does not exist in a shuttle loom where the comb is simply driven in a vertical reciprocating movement from bottom to top.

La présente invention s'est fixée pour but, d'une manière simple, efficace et rationnelle, la réalisation de sangles avec rétrécissements transversaux, sur des métiers automatiques à faucilles. L'invention telle qu'elle est caractérisée dans les revendications, résout le problème consistant à créer une sangle qui présente une armure identique, sur toute leur longueur, ou eventuellement plusieurs armures, avec des lisières communes aux parties rectilignes et parties rétrécies, lesdites lisières étant obtenues d'un côté par une succession de chaînettes formées par le travail de l'aiguille du métier, avec ou sans fils d'apports, quel que soit le système de liage de la trame et du côté opposé par le simple retour de la trame par rapport aux fils de la chaîne.The present invention has set itself the aim, in a simple, efficient and rational manner, of making straps with transverse narrowing, on automatic sickle looms. The invention as characterized in the claims solves the problem of creating a strap which has identical weave, over their entire length, or possibly several weaves, with selvedges common to the rectilinear parts and narrowed parts, said selvedges being obtained on one side by a succession of chains formed by the working of the needle of the trade, with or without filler threads, whatever the system of tying the weft and on the opposite side by the simple return of the weft relative to the warp threads.

D'une manière avantageuse, pour la réalisation de sangles tissées avec des rétrécissements, sur un métier automatique à faucilles, on incline par rapport à l'axe du battant un peigne en forme de V, tel que la lame extrême du peigne forme un angle a par rapport à l'axe dudit battant pour que ladite lame demeure toujours à une distance constante parallèle à l'aiguille de formation de la lisière lors du déplacement en hauteur du peigne pour autoriser le tissage des parties rétrécies et des parties de raccordement; on asservit le déplacement du peigne, d'une part, avec un dispositif donneur de trame pour assurer la variation de vitesse de défilement, compte-tenu de la moindre largeur de la sangle et d'autre part, avec un dispositif régulateur de tension de la sangle en vue de son appel et évacuation, compte-tenu de l'effort de frappe du battant s'exerçant sur une moindre largeur de la sangle.Advantageously, for the production of straps woven with narrowing, on an automatic sickle loom, a V-shaped comb is inclined relative to the axis of the leaf, such that the end blade of the comb forms an angle a relative to the axis of said leaf so that said blade always remains at a constant distance parallel to the selvedge formation needle during the displacement in height of the comb to allow the weaving of the narrowed parts and the connecting parts; the movement of the comb is controlled, on the one hand, with a weft-giving device to ensure the variation in running speed, taking into account the narrower width of the strap, and on the other hand, with a tension regulating device of the strap for its call and evacuation, taking into account the striking force of the leaf acting on a lesser width of the strap.

Pour la mise en oeuvre du procédé, le battant du métier à faucille reçoit une glissière verticale, fixée angulairement, d'une manière oblique en étant conformée pour recevoir un coulisseau mobile destiné au montage d'un peigne. avec lames disposées symétriquement en forme de V pour obtenir selon son positionnement en hauteur la variation de l'écartement des fils de chaîne; la lame extrême dudit peigne étant inclinée selon un plan parallèle au plan de travail de l'aiguille servant à former les points de chaînette de la lisière de la sangle de manière à obtenir la continuité de la lisière lors du tissage des parties rétrécies; le déplacement en hauteur du coulisseau mobile porte-peigne est assuré par un vérin fixé sur le battant ou sur une partie fixe du métier; ledit piston étant commandé suivant une course déterminée par les impulsions d'un capteur disposé en regard de l'axe du battant ou tout autre organe en mouvement; le dispositif donneur de trame est commandé par un variateur de vitesse couplé sur le système de commande du peigne; ledit dispositif autorisant le ralentissement de la vitesse linéaire du distributeur de trame, lors du tissage des largeurs rétrécies ou des évasements.For the implementation of the method, the leaf of the sickle loom receives a vertical slide, fixed angularly, in an oblique manner being shaped to receive a movable slide intended for mounting a comb. with blades arranged symmetrically in the form of a V to obtain, depending on its height positioning, the variation in the spacing of the warp threads; the end blade of said comb being inclined along a plane parallel to the working plane of the needle used to form the chain stitches of the edge of the strap so as to obtain the continuity of the edge during the weaving of the narrowed parts; the displacement in height of the movable comb-carrying slide is ensured by a jack fixed on the leaf or on a fixed part of the loom; said piston being controlled according to a stroke determined by the pulses of a sensor arranged opposite the axis of the leaf or any other moving member; the weft donor device is controlled by a speed variator coupled to the comb control system; said device authorizing the slowing down of the linear speed of the weft distributor, when weaving narrowed widths or flares.

Les avantages obtenus grâce à cette invention résident essentiellement dans:

  • - la régularité de tissage, de souplesse et d'épaisseur de la sangle, notamment au droit des rétrécissements,
  • -la rapidité de fabrication avec une ou plusieurs armures quels que soient les types d'armures,
  • - la possibilité d'obtention sur un même métier, des sangles avec des rétrécissements de largeurs variables et des évasements progressifs de longueurs variables.
The advantages obtained thanks to this invention essentially lie in:
  • - the regularity of weaving, flexibility and thickness of the strap, in particular at the right of the narrowing,
  • -the speed of manufacture with one or more armor whatever the types of armor,
  • - the possibility of obtaining on the same loom, straps with narrowing of variable widths and progressive flares of variable lengths.

L'invention est exposée ci-après plus en détail à l'aide des dessins représentant seulement un mode d'exécution.

  • La figure 1 est une vue en perspective d'un métier automatique au droit de la faucille, équipé du dispositif selon l'invention en vue de la réalisation de sangles tissées avec parties resserrées
  • Les figures 2, 3, 4, 5 et 6 illustrent différents types de sangles obtenues selon l'invention.
  • La figure 7 est une vue de face illustrant la fixation du peigne sur le coulisseau et son positionnement par rapport à l'aiguille de tricotage. Le peigne occupant une position basse (tissage partie large de la sangle).
  • La figure 8 est une vue en plan et en coupe suivant la ligne 8-8 de la figure 7.
  • La figure 9 est une vue de face semblable à la figure 7, mais le peigne occupe la position haute (tissage partie étroite de la sangle).
  • La figure 10 est une vue extérieure de profil correspondant à la figure 9.
  • La figure 11 est une vue purement schématique illustrant la commande synchronisée, à partir du capteur, de déplacement du peigne, du donneur de trame et du tambour d'enroulement de la sangle.
The invention is set out below in more detail with the aid of the drawings showing only one embodiment.
  • Figure 1 is a perspective view of an automatic loom to the sickle, equipped with the device according to the invention for the production of woven straps with tightened parts
  • Figures 2, 3, 4, 5 and 6 illustrate different types of straps obtained according to the invention.
  • Figure 7 is a front view illustrating the fixing of the comb on the slide and its positioning relative to the knitting needle. The comb occupying a low position (weaving wide part of the strap).
  • FIG. 8 is a plan view and in section along line 8-8 of FIG. 7.
  • Figure 9 is a front view similar to Figure 7, but the comb occupies the high position (weaving narrow part of the strap).
  • FIG. 10 is an external profile view corresponding to FIG. 9.
  • FIG. 11 is a purely schematic view illustrating the synchronized control, from the sensor, of displacement of the comb, of the weft donor and of the drum for winding the strap.

Selon l'invention, le métier automatique à faucille est équipé pour l'obtention de sangles avec rétrécissements transversaux localisés, d'une glissière (1) fixée angulairement sur l'embase du battant (B) de manière à occuper une position inclinée, comme illustré aux figures 7 et 9 des dessins.According to the invention, the automatic sickle loom is equipped for obtaining straps with localized transverse constrictions, a slide (1) fixed angularly on the base of the leaf (B) so as to occupy an inclined position, as illustrated in Figures 7 and 9 of the drawings.

De par sa section profilée, en queue d'aronde, la glissière (1) autorise le guidage à libre coulissement d'un coulisseau porte-peigne (2) en forme d'étrier dont la découpe trapézoïdale autorise le libre passage de la nappe des fils de chaînette (F) sollicités à la façon connue, par la faucille (3) d'amenée du fil de trame (T).By virtue of its profiled section, in dovetail, the slide (1) authorizes the free sliding guidance of a comb-carrying slide (2) in the shape of a stirrup whose trapezoidal cut-out allows the free passage of the web of warp threads (F) biased in the known manner, by the sickle (3) for feeding the weft thread (T).

Le coulisseau (2) permet au droit de son ouverture, la fixation faciale d'un peigne (4) dont les lames (4a) sont disposées symétriquement en forme de V, de manière à obtenir entre lesdites lames, un écartement maximum au droit de la grande base, et au contraire un écartement minimum au droit de la petite base.The slide (2) allows the right of its opening, the facial attachment of a comb (4) whose blades (4a) are arranged symmetrically in a V shape, so as to obtain between said blades, a maximum spacing at the right of the large base, and on the contrary a minimum spacing to the right of the small base.

De ce fait, l'on conçoit que le déplacement en hauteur du coulisseau (2) permet d'éloigner ou de rapprocher entre-eux les fils de chaîne (F) pour obtenir soit la largeur normale de la sangle, soit la largeur réduite avec évasement progressif de raccordement de ces deux parties.Therefore, it is understood that the displacement in height of the slide (2) makes it possible to distance or bring together the warp threads (F) to obtain either the normal width of the strap, or the reduced width with progressive flaring of connection of these two parts.

Il est important de considérer que la fixation angulaire d'une manière inclinée de la glissière (1) et par suite du coulisseau (2) autorise le positionnement rigoureux de la lame extrême (4b) du peigne (4) dans un plan parallèle au plan de déplacement de l'aiguille mobile (5) servant à former les points de chaînettes de la lisière de la sangle. Cette caractéristique permet, lors de la course en hauteur du coulisseau (2), d'obtenir d'un côté la continuité de formation de la chaînette au droit des lisières rectilignes de largeur normale ou réduite et des lisières évasées de raccordement.It is important to consider that the angular fixing in an inclined manner of the slide (1) and consequently of the slide (2) authorizes the rigorous positioning of the extreme blade (4b) of the comb (4) in a plane parallel to the plane movement of the movable needle (5) used to form the chain stitches of the edge of the strap. This characteristic makes it possible, during the stroke in height of the slide (2), to obtain on one side the continuity of formation of the chain at the right of the rectilinear selvedges of normal or reduced width and flared selvedges of connection.

On note également que la trame peut être liée suivant plusieurs systèmes connus, notamment par le système à un ou plusieurs fils d'apports, obtenu par l'emploi du doigt (13) inhérent au métier automatique à faucille.It is also noted that the weft can be linked according to several known systems, in particular by the system with one or more filler wires, obtained by the use of the finger (13) inherent in the automatic sickle loom.

Le moyen de déplacement en hauteur dans les deux sens du coulisseau porte-peigne (2) est assuré, par exemple, au moyen d'un vérin (6) fixé sur le battant (B) du métier, ou encore sur une partie fixe, dont le piston est relié audit coulisseau (2) soit par des moyens pneumatiques, soit par des moyens mécaniques. Le piston dudit vérin (6) est commandé automatiquement par l'intermédiaire de chaque impulsion d'un capteur (7) disposé en regard d'un organe mobile du métier tel que le battant (B), suivant une course de longueur déterminée et réglable. De ce fait, l'opération de rétrécissement de la sangle (S) est progressive pour obtenir ainsi à volonté, d'une part des évasements (Sa-Sb) de raccordement de longueurs variables et, d'autre part, des largeurs rétrécies (1a-1b) de dimensions variables, compte-tenu de l'amplitude de la course du peigne (4). Ces dispositions sont illustrées aux figures 2,3,4,5 et 6 où l'on voit des sangles (S) de même largeur (1) obtenues directement sur le métier à faucille avec des zones de rétrécissement et des évasements de dimensions variables. On remarque également, selon la figure 5, que la partie rétrécie (1c) de la sangle (S) comporte une lisière rectiligne et continue, effectuée soit du côté point de chaînette, soit du côté lisière réelle.The means of displacement in height in both directions of the comb-carrying slide (2) is provided, for example, by means of a jack (6) fixed on the leaf (B) of the loom, or even on a fixed part, the piston of which is connected to said slide (2) either by pneumatic means or by mechanical means. The piston of said cylinder (6) is controlled automatically by means of each pulse from a sensor (7) arranged opposite a mobile member of the trade such as the wing (B), following a stroke of determined and adjustable length. . Therefore, the narrowing operation of the strap (S) is progressive so as to obtain at will, on the one hand, flares (Sa-Sb) of connection of variable lengths and, on the other hand, narrowed widths ( 1a-1b) of variable dimensions, taking into account the amplitude of the stroke of the comb (4). These arrangements are illustrated in Figures 2,3,4,5 and 6 where we see straps (S) of the same width (1) obtained directly on the sickle loom with narrowing zones and flares of variable dimensions. We also note, according to Figure 5, that the narrowed part (1c) of the strap (S) has a straight and continuous selvedge, made either on the chain stitch side, or on the real selvedge side.

Il faut également noter que les impulsions du capteur (7) sont transmises à un boîtier éléctroni- que (8) muni de compteurs, qui distribue lesdites impulsions nécessaires, simultanément au moyen de déplacement en hauteur du peigne, à un donneur de trame (10) et à un régulateur de tirage de la sangle tissée comme illustré figure 11.It should also be noted that the pulses from the sensor (7) are transmitted to an electronic box (8) provided with counters, which distributes said necessary pulses, simultaneously by means of displacement in height of the comb, to a weft donor (10 ) and to a woven strap draft regulator as illustrated in figure 11.

Le dispositif donneur de trame est asservi à un variateur de vitesse (9) couplé sur le système de commande (6) du peigne (4) par l'intermédiaire du boîtier électronique (8), pour agir sur un distributeur de trame (10). Le donneur (10) de trame (T) permet ainsi automatiquement le ralentissement proportionnel de la distribution lors du tissage des largeurs rétrécies (1a-1b) et des évasements (Sa Sb), pour éviter les flottements et le relâchement de la tension. Ce distributeur (10) peut être de tout type connu, tel à flasques coniques rapprochés, selon la figure 11, ou encore du type semi positif.The weft donor device is slaved to a speed variator (9) coupled to the control system (6) of the comb (4) via the electronic unit (8), to act on a weft distributor (10) . The weft donor (10) (T) thus automatically allows the proportional slowing down of the distribution during the weaving of the narrowed widths (1a-1b) and the flares (Sa Sb), to avoid the floating and the relaxation of the tension. This distributor (10) can be of any known type, such as close conical flanges, according to FIG. 11, or else of the semi positive type.

Le régulateur de tension agissant sur le rouleau de réception (12) de la sangle (S) est asservi à un variateur de vitesse (11) couplé également sur le système de commande du peigne (4) par l'intermédiaire du boîtier électronique de commande (8). Il en résulte un effort proportionnel plus important lors du tissage des parties rétrécies (1a-1b) et des évasements (Sa-Sb), pour compenser l'effort de frappe plus important du battant (B) puisque s'exerçant sur une moindre largeur.The tension regulator acting on the receiving roller (12) of the strap (S) is controlled by a speed variator (11) also coupled to the comb control system (4) via the electronic control unit. (8). This results in a greater proportional force during the weaving of the narrowed parts (1a-1b) and the flares (Sa-Sb), to compensate for the greater striking force of the leaf (B) since it is exerted on a narrower width .

Il est évident que les dispositions peuvent éventuellement s'appliquer à des rubans ou autres articles similaires sur tout type de métier automatique.It is obvious that the provisions may possibly apply to ribbons or other similar articles on any type of automatic loom.

Il faut considérer également que pour la compréhension des dessins, on a illustré le côté point de chaînette avec un effet de bordure dentelée, étant observé qu'en réalité ce bord donne un effet rectiligne comme le bord côté lisière réelle.It should also be considered that for the understanding of the drawings, the chain stitch side has been illustrated with a serrated edge effect, it being observed that in reality this edge gives a rectilinear effect like the edge on the real selvedge side.

Claims (5)

1. Woven straps with local transverse shrink- ings made on automatic sickle looms and having along their entire length identical weaves or as the case may be various weaves, with common selvedges for the rectilinear and the shrinked portions, said selvedges being obtained on one side by a succession of chains formed by the work of the needle of the loom, with or without additional yarns, regardless of the weft binding system, and on the other side by the mere return of the weft relative to the warp yarns.
2. Method for manufacturing the straps in accordance with claim 1, characterized in that a V-shaped reed is given an inclination relative to the axis of the slay, so that the extreme blade 4b of the creed will form an angle a relative to the axis of said slay in order to have said blade remaining steadily at a constant spacing from and parallel to the selvedge forming needle at the vertical shifting of the creed upwardly to permit the weaving of the shrinked portion and of the connecting portions, the shifting of the creed being governed on the one hand by means of a weft distributing device in order to provide the variation of the unwinding speed while taking into account the smaller width of the strap, and on the other hand by means of a regulating device for the tensioning of the strap, for the purpose of calling and discharging the latter, while taking into account the fact that the striking stress of the slay is applied to a smaller width of the strap.
3. The means for implementing the method in accordance with Claim 2, characterized in that the slay (B) of the sickle loom accommodates a vertical slideway (1) which is fixed angularly in a slanting manner and is conformed to receive a movable slideblock (2) intended for mounting a reed (4) with blades (4a) disposed symmetrically in the form of a V in order to obtain according to the vertical positioning thereof the variation of the spacing apart of the warp yarns, the extreme blade (4b) of said creed being slanted in accordance with a plane parallel to the working plane of the needle (5) serving for the purpose of forming the chain stitches of the selvedge of the strap so as to provide the continuity of the selvedge when weaving the shrinked portions, the vertical shifting of the movable slideblock (2) which supports the creed (4) being provided by a cylinder (6) secured to the slay (B) or to a fixed part of the loom, the piston of said cylinder being driven in accordance with a stroke rate which is determined by the impulses of a sensor (7) located in front of the axis of the slay (B) or any other moving organ, the weft distributing device (T) being controlled by a speed gearing device (9) coupled to the control system of the reed (4), said speed gearing device permitting the slowing down of the linear speed of the weft distributing device (T) when weaving the shrinked widths (1a-1 b) or the widened portions (Sa-Sb).
4. The means for implementing the method in accordance with Claim 2, characterized in that the regulating device for the tensioning of the strap (S), after the weaving, is controlled by a speed gearing device (11) coupled to the control system of the reed (4), said speed gearing device, owing to the variation of the speed, permitting the strap to be called and discharged (12) with a pulling effect when weaving the shrinked widths (1 a-1 b) or the widened portions (Sa-Sb).
5. The means of implementation in accordance with Claims 3 and 4, characterized in that the impulses of the sensor (7) are transmitted to an electronic casing (8) provided with meters which distributes said impulses simultaneously to the shifting device of the movable slideblock (2) which supports the reed (4), to the weft distributing device (T) and to the regulating device for the tensioning of the strap (S).
EP84420183A 1983-11-03 1984-10-26 Process for manufacturing woven tapes with localized tightened parts woven on an automatic sickle loom and device for carrying out this process Expired - Lifetime EP0145615B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84420183T ATE40160T1 (en) 1983-11-03 1984-10-26 WOVEN RIBBON WITH LOCALIZED LATERAL CONCLUSIONS WOVEN ON AN AUTOMATIC SICKLE WEAVING MACHINE, PROCESS AND APPARATUS FOR THE MANUFACTURE OF THIS PROCESS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8317761A FR2554463B1 (en) 1983-11-03 1983-11-03 WOVEN STRAPS WITH LOCALIZED CROSS-SHRINKAGE, OBTAINED ON AUTOMATIC SICKLING MATERIALS AND THEIR PRODUCTION METHOD
FR8317761 1983-11-03

Publications (3)

Publication Number Publication Date
EP0145615A1 EP0145615A1 (en) 1985-06-19
EP0145615B1 true EP0145615B1 (en) 1989-01-18
EP0145615B2 EP0145615B2 (en) 1992-11-19

Family

ID=9293903

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EP84420183A Expired - Lifetime EP0145615B2 (en) 1983-11-03 1984-10-26 Process for manufacturing woven tapes with localized tightened parts woven on an automatic sickle loom and device for carrying out this process

Country Status (9)

Country Link
US (1) US4640317A (en)
EP (1) EP0145615B2 (en)
JP (1) JPS60110951A (en)
AT (1) ATE40160T1 (en)
CA (1) CA1274150A (en)
DE (2) DE3476229D1 (en)
ES (1) ES537344A0 (en)
FR (1) FR2554463B1 (en)
NO (1) NO157866C (en)

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Also Published As

Publication number Publication date
CA1274150A (en) 1990-09-18
JPS6331576B2 (en) 1988-06-24
JPS60110951A (en) 1985-06-17
NO844293L (en) 1985-05-06
FR2554463B1 (en) 1986-08-14
NO157866B (en) 1988-02-22
US4640317A (en) 1987-02-03
ES8603599A1 (en) 1985-12-16
FR2554463A1 (en) 1985-05-10
ES537344A0 (en) 1985-12-16
DE3476229D1 (en) 1989-02-23
ATE40160T1 (en) 1989-02-15
EP0145615A1 (en) 1985-06-19
DE145615T1 (en) 1986-07-03
NO157866C (en) 1988-06-01
EP0145615B2 (en) 1992-11-19

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