EP0249578A1 - Method and apparatus for joining two textile yarns together - Google Patents

Method and apparatus for joining two textile yarns together Download PDF

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Publication number
EP0249578A1
EP0249578A1 EP87810328A EP87810328A EP0249578A1 EP 0249578 A1 EP0249578 A1 EP 0249578A1 EP 87810328 A EP87810328 A EP 87810328A EP 87810328 A EP87810328 A EP 87810328A EP 0249578 A1 EP0249578 A1 EP 0249578A1
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EP
European Patent Office
Prior art keywords
barbs
fibers
support members
wires
beard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87810328A
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German (de)
French (fr)
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EP0249578B1 (en
Inventor
Carlos Pujol-Isern
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Individual
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Individual
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Priority claimed from ES555928A external-priority patent/ES8705935A1/en
Priority claimed from ES8701457A external-priority patent/ES2003800A6/en
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Publication of EP0249578A1 publication Critical patent/EP0249578A1/en
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Publication of EP0249578B1 publication Critical patent/EP0249578B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method for attaching two textile threads and to the device for implementing this method.
  • this method requires a relatively complex mechanism to form the beard on a flat surface on the one hand, then to achieve the interpenetration of the end fibers in the respective deployed zones of the adjacent beards, on the other hand .
  • this process involves, to form the beard, mechanical means for untwisting the thread, pneumatic, electrostatic and thermal means for spreading the fibers in one plane and deploying the area of the base of the fibers and, for carrying out the interpenetration, air injection nozzles directed transversely to the plane of the barbs.
  • Other means are also used as suction through the bearer support plate to cause their adaptation or hot air to promote the plasticity of the fibers.
  • Patent US-4,244,169 and patent application EP 0 053 093 are variants of the previous patent, in which ultrasound is used to undo the wires.
  • the object of the present invention is to remedy, at least partially, the drawbacks of the above-mentioned solutions.
  • the subject of the invention is a method for joining two textile threads as defined by claim 1.
  • the torsion of the superimposed barbs, the fibers of which are intertwined, is transmitted progressively from the two ends to the middle part, limiting the propagation of this torsion by the application to the barbs of opposite transverse forces and whose points of application move towards the middle part as the torsion moves towards this middle part to finally suppress the application of these transverse forces.
  • the subject of the invention is also a device for implementing this method according to claim 3 as well as according to claim 4.
  • This device has other constructive characteristics which will be described later.
  • the wire is untwisted and it is subjected to a slight pulling effect by a pulling clamp which moves axially, which causes a parallelization effect by stretching the barbs.
  • a support member presses the barbs retaining the residual twist of the fibers, so that when the barbs are superimposed, the residual twist of the fibers is recovered with an effect similar to the wiring, in which each element is applied a twist that will maintain the stability of the entire wire. This effect is lost if the fibers of the beards are subjected to a conventional combing effect.
  • the method and the device of the invention make it possible to achieve good reproducibility of the conditions for preparing and joining the beards, since it is dictated only by the shapes of the parts of the mechanism, and the synchronization of most of the sequences follows from the simple bringing together two organs along their respective trajectories.
  • the fibers are constantly subjected to a tension which prevents their relaxation which induces a controlled sliding between the fibers of the two beards.
  • Figures 1 to 4 show the different phases of the process for joining two textile threads, object of the invention
  • Figures 5 to 9 show in a top view the first embodiment of this device and the positions of its mechanisms in the successive phases of the process
  • Figure 10 is an enlarged perspective view of the rotary gripping member of the device
  • Figure 11 is an enlarged perspective view of a detail of the beard support member
  • Figure 12 is a top view of the second embodiment of this device
  • FIG. 13 is a perspective view of a pneumatic chamber for twist and untwist the thread.
  • FIG. 1 represents a first phase of the process in which the previously untwisted wires 1,2 are subjected to axial tensile forces A in order to cause the separation of the barbs 3,4 and the deployment and parallelization of the fibers.
  • said barbs 3,4 are superimposed head to tail by applying opposite transverse forces B in the zone contiguous to the respective ends of said barbs 3,4, as shown in FIG. 2 to immobilize them and retain the individual twist of the fibers and to press them one against the other, simultaneously causing longitudinal sliding of opposite directions of these barbs.
  • the torsion of the superimposed barbs 3,4, the fibers of which are interlaced is transmitted progressively from the two respective ends to the middle part, limiting the propagation of said torsion by application to the barbs 3,4 of said opposite transverse forces B, which move towards the middle part. Finally, when these forces are eliminated, the torsion is transmitted in its entirety, as can be observed in FIG. 4.
  • the device for reattaching the wires 1,2 comprises two gripping pliers 5,6, ends of the wires 1,2, two rotary gripping members 7,8 to induce untwisting respectively a twist of these ends of wires and two support members 9, 10 of the respective barbs, having complementary surfaces.
  • the device further comprises gripping members 11,12 of the ends of the barbs retained by the rotary gripping members 7,8.
  • Figure 10 shows one of these rotary gripping members 7 which comprises in its front end a spiral finger 13 by which, when the clamp rotates in the direction indicated by the arrow E, it drives the wire 1,2 towards the axis of rotation by untwisting it, and when it turns in the direction indicated by arrow F, the thread is twisted away from the axis.
  • the grippers 5,6 of the ends of the wires 1,2 move axially in the direction of the arrows D, which causes a sliding between the fibers of the barbs producing an initial combing of the portion untwisted son.
  • the gripping members 11, 12 pinch the ends of the barbs while retaining the residual twist of the fibers.
  • the support members 9, 10 of the barbs have two complementary surfaces and can move around a center of rotation according to two trajectories which go from respective positions separated from the wires (FIG. 5) to respective positions in which their complementary surfaces are adjacent to each other ( Figure 8).
  • the wires 1,2 are guided on the support members 9,10 by means of guide notches 19,20 at the respective ends of these support members 9,10 as well as at the ends of the corresponding flexible blades 15, 16, as as illustrated in FIG. 11 for the support member 9.
  • the friction between the surfaces in contact promotes the interpenetration of the fibers of the barbs of the two wires.
  • the surfaces of the two flexible blades 15, 16 are covered with rubber or a similar material to facilitate the laying of the barbs and the defibration of the fibers.
  • the support members 9, 10 have respective projections 21, 22 which bear on the elbow supports 17, 18 and cause the beard to be retained over its entire length.
  • a lug 23.24 grasps each of the ends of the opposite beard and wraps it on its own beard, thus beginning the phase of reintroduction of the torsion.
  • rotary gripping members 7,8 are replaced by channels 26,27 of circular section to untwist and twist the threads 1,2.
  • each of the channels 26, 27 open tangentially two conduits 28, 29 respectively 30, 3l, arranged in diametrically opposite positions and intended to be selectively connected to a source of pressurized air to produce in these channels vortices opposite directions.
  • These air vortices are intended to drive the wire arranged coaxially to the channel in a direction to twist it or in the opposite direction to untwist it depending on whether the air is injected through a duct or another.
  • the channels 26, 27 include a longitudinal opening (32) for the introduction and the extraction of the wire, visible in FIG. 13.

Landscapes

  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

Ce pocédé consiste, après avoir détordu deux portions de fils (1,2) par rotations en sens respectifs opposés pour former deux barbes de fibre à les superposer tête-bêche, à leur appliquer deux forces transversales opposées (B) au voisinage des extrémités de ces barbes pour exercer une traction sur ces barbes et faire glisser les fibres respectives longitudi­nalement et à réintroduire la torsion dans ces barbes en faisant tourner les fils en sens respectifs opposés à ceux utilisés pour les détordre et en déplaçant progressivement les points d'application des forces transversales (B) vers la partie médiane de ces barbes avant de supprimer complètement ces forces transversales (B).This process consists, after having untwisted two portions of son (1, 2) by rotations in opposite respective directions to form two barbs of fiber to be superimposed head-to-tail, in applying two opposite transverse forces (B) to them in the vicinity of the ends of these barbs to exert traction on these barbs and to slide the respective fibers longitudinally and to reintroduce the twist in these barbs by rotating the threads in respective directions opposite to those used to untwist them and by gradually moving the points of application of the forces transverse (B) towards the middle part of these barbs before completely eliminating these transverse forces (B).

Description

La présente invention se rapporte à un procédé pour rattacher deux fils textiles et au dispositif pour la mise en oeuvre de ce procédé.The present invention relates to a method for attaching two textile threads and to the device for implementing this method.

ETAT DE LA TECHNIQUESTATE OF THE ART

On connaît des procédés pour rattacher deux fils textiles dan les­quels on forme sur chaque fil une barbe en détordant une portion de ce fil, on déploie les fibres dans la zone de la base de la barbe, on les superpose en disposant les extrémités desdites barbes sur la base de la barbe oppo­sée, en faisant s'interpénétrer les fibres des zones d'extrémité de chaque barbe et on retransfert ladite torsion simultanément depuis les extrémités respectives de ces barbes.Methods are known for attaching two textile yarns in which a beard is formed on each yarn by untwisting a portion of this yarn, the fibers are deployed in the area of the base of the beard, they are superimposed by placing the ends of said barbs on the base of the opposite beard, making the fibers of the end zones of each beard interpenetrate and said twist is retransferred simultaneously from the respective ends of these beards.

On a déjà proposé, dans le brevet EP-B1-0029 808, de rattacher des fils en formant une barbe de chacun des fils avec la base de ces barbes déployée, ensuite on met ces barbes tête-bèche l'une contre l'autre dans un plan et on fait alors pénétrer les fibres des extrémités respectives des barbes entre les fibres déployées des bases adjacentes des barbes respec­tives. Lorsqu'on remet la torsion dans ces barbes, les fibres ainsi dispo­sées recréent sensiblement les conditions du filage aussi bien dans l'as­pect que dans la résistance mécanique du fil.It has already been proposed, in patent EP-B1-0029 808, to attach wires by forming a beard of each of the wires with the base of these barbs deployed, then these head-to-tail beards are placed one against the other. in a plane and the fibers of the respective ends of the barbs are then made to penetrate between the fibers deployed from the adjacent bases of the respective barbs. When the torsion is returned to these barbs, the fibers thus arranged substantially recreate the conditions of spinning both in appearance and in the mechanical strength of the wire.

La mise en oeuvre de ce procédé nécessite toutefois un mécanisme relativement complexe pour former la barbe sur une surface plane d'une part, puis pour réaliser l'interpénétration des fibres d'extrémité dans les zones déployées respectives des barbes adjacentes, d'autre part. En effet, ce procédé fait intervenir, pour former la barbe, des moyens mécaniques pour détordre le fil, des moyens pneumatiques, électrostatiques et thermi­ques pour étendre les fibres dans un plan et déployer la zone de la base des fibres et, pour réaliser l'interpénétration, des buses d'injection d'air dirigées transversalement au plan des barbes. On emploie aussi d'au­tres moyens comme aspiration à travers de platine d'appui des barbes pour provoquer leur adaptation ou de l'air chaud pour favoriser la plasticité des fibres.The implementation of this method however requires a relatively complex mechanism to form the beard on a flat surface on the one hand, then to achieve the interpenetration of the end fibers in the respective deployed zones of the adjacent beards, on the other hand . In fact, this process involves, to form the beard, mechanical means for untwisting the thread, pneumatic, electrostatic and thermal means for spreading the fibers in one plane and deploying the area of the base of the fibers and, for carrying out the interpenetration, air injection nozzles directed transversely to the plane of the barbs. Other means are also used as suction through the bearer support plate to cause their adaptation or hot air to promote the plasticity of the fibers.

En outre, la reproductibilité du procédé faisant largement recours aux moyens pneumatiques, thermiques et électrostatiques n'est pas totalement contrôlable et dépend en partie de la nature des fils à rattacher. En effect, suivant la nature de ces fils, les moyens pneumatiques, électrosta­tiques et thermiques ne permettent pas toujours d'obtenir des barbes pré­ sentant les mêmes caractéristiques.In addition, the reproducibility of the process making extensive use of pneumatic, thermal and electrostatic means is not fully controllable and depends in part on the nature of the wires to be attached. In fact, depending on the nature of these wires, the pneumatic, electrostatic and thermal means do not always make it possible to obtain pre beards. feeling the same characteristics.

Le brevet US-4,244,169 et la demande de brevet EP 0 053 093 sont des variantes du brevet précédent, dans lesquelles on emploie des ultrasons pour défaire les fils.Patent US-4,244,169 and patent application EP 0 053 093 are variants of the previous patent, in which ultrasound is used to undo the wires.

D'autres documents présentent des moyens particuliers pour détordre les fils, tels que les demandes de brevet EP 0 039 609, EP 0 078 776, EP 0 123 329, EP 0 034 764, EP 0 078 777, EP 0 078 778, EP 0 120 523 et EP 0 140 412, dans lesquels le fil est détordu en le faisant rouler entre deux surfaces qui se déplacent en sens contraire. Ces surfaces sont constituées fondamentalement par des disques qui se déplacent angulairement.Other documents present particular means for untwisting the threads, such as patent applications EP 0 039 609, EP 0 078 776, EP 0 123 329, EP 0 034 764, EP 0 078 777, EP 0 078 778, EP 0 120 523 and EP 0 140 412, in which the thread is untwisted by rolling it between two surfaces which move in opposite directions. These surfaces are basically formed by discs which move angularly.

Si les résultats obtenus par le procédé décrit sont bons, les moyens mis en oeuvre posent des problèmes de réalisation pratiques et conduisent à une solution relativement onéreuse et complexe.If the results obtained by the process described are good, the means used pose practical implementation problems and lead to a relatively expensive and complex solution.

DESCRIPTION DE L'INVENTIONDESCRIPTION OF THE INVENTION

Le but de la présente invention est de remédier, au moins partielle­ment, aux inconvénients des solutions susmentionnées.The object of the present invention is to remedy, at least partially, the drawbacks of the above-mentioned solutions.

A cet effet, l'invention a pour objet un procédé pour rattacher deux fils textiles tel que défini par la revendication 1.To this end, the subject of the invention is a method for joining two textile threads as defined by claim 1.

La torsion des barbes superposées, dont les fibres sont entrelacées, est transmise progressivement depuis les deux extrémités jusqu'à la partie médiane, en limitant la propagation de cette torsion par l'application sur les barbes de forces transversales opposées et dont les points d'applica­tion se déplacent vers la partie médiane au fur et à mesure du déplacement de la torsion vers cette partie médiane pour supprimer finalement l'appli­cation de ces forces transversales.The torsion of the superimposed barbs, the fibers of which are intertwined, is transmitted progressively from the two ends to the middle part, limiting the propagation of this torsion by the application to the barbs of opposite transverse forces and whose points of application move towards the middle part as the torsion moves towards this middle part to finally suppress the application of these transverse forces.

L'invention a aussi pour objet un dispositif pour la mise en euvre de ce procédé selon la revendication 3 ainsi que selon la revendication 4.The subject of the invention is also a device for implementing this method according to claim 3 as well as according to claim 4.

Ce dispositif présente d'autres caractéristiques constructives qui seront décrites plus loin.This device has other constructive characteristics which will be described later.

La caratéristique de cette solution réside dans le fait d'appliquer au fil tendu des forces transversales opposées qui induisent un glissement contrôlé entre les fibres des barbes tout en pressant ces fibres des barbes respectives adjacentes les unes contre les autres.The characteristic of this solution lies in the fact of applying to the tensioned wire opposite transverse forces which induce a controlled sliding between the fibers of the barbs while pressing these fibers of the respective adjacent barbs against each other.

Grâce au dispositif objet de l'invention, le fil est détordu et il est soumis à un léger effet de traction par une pince de traction qui se déplace axialement, ce qui provoque un effet de parallélisation par étirage des barbes.Thanks to the device that is the subject of the invention, the wire is untwisted and it is subjected to a slight pulling effect by a pulling clamp which moves axially, which causes a parallelization effect by stretching the barbs.

En plus, un organe d'appui presse les barbes en retenant la torsion rémanente des fibres, de façon que lorsque les barbes sont superposées, la torsion rémanente des fibres est récupérée avec un effet similaire au cablâge, dans lequel on applique à chacun des éléments une torsion qui permettra de maintenir la stabilité de l'ensemble du fil. Cet effect se perd si les fibres des barbes sont soumises à un effet de peignage convention­nel.In addition, a support member presses the barbs retaining the residual twist of the fibers, so that when the barbs are superimposed, the residual twist of the fibers is recovered with an effect similar to the wiring, in which each element is applied a twist that will maintain the stability of the entire wire. This effect is lost if the fibers of the beards are subjected to a conventional combing effect.

Avec le procédé et le dispositif de l'invention on obtient une dispo­sition correcte des barbes superposées, en évitant à la fois l'augmentation de la section résultant de la simple superpositon des barbes ainsi que le point faible, résultant de la perte de fibres flottantes et l'on obtient une régularité parfaite de la section.With the method and the device of the invention, a correct arrangement of the superimposed barbs is obtained, avoiding both the increase in the section resulting from the simple superposition of the barbs as well as the weak point, resulting from the loss of floating fibers. and we obtain a perfect regularity of the section.

On obtient aussi un excellent aspect parce que la torsion préalable­ment déplacée est réincorporée totalement dans les barbes superposées.An excellent appearance is also obtained because the previously displaced twist is completely reincorporated into the superimposed barbs.

Grâce à la superposition des barbes et à la transmission contrôlées de la torsion dans ces barbes on obtient une rattache d'excellente qualité.Thanks to the superimposition of the barbs and to the controlled transmission of the torsion in these barbs, an excellent quality connection is obtained.

Le procédé et le dispositif de l'invention permettent d'atteindre une bonne reproductibilité des conditions de préparation et réunion des barbes, car elle est dictée seulement par les formes des parties du mécanisme, et la synchronisation de l'essentiel des séquences découle du simple rappro­chement de deux organes le long de leurs trajectoires respectives.The method and the device of the invention make it possible to achieve good reproducibility of the conditions for preparing and joining the beards, since it is dictated only by the shapes of the parts of the mechanism, and the synchronization of most of the sequences follows from the simple bringing together two organs along their respective trajectories.

Il est important de noter, en plus, que les fibres sont constamment soumises à une tension qui empêche leur relaxation ce qui induit un glisse­ment contrôlé entre les fibres des deux barbes.It is important to note, in addition, that the fibers are constantly subjected to a tension which prevents their relaxation which induces a controlled sliding between the fibers of the two beards.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

Les dessins annexés illustrent, schématiquement et à titre d'exemple, les phases du procédé et deux formes d'exécution du dispositif pour la mise en oeuvre de celui-là.The accompanying drawings illustrate, schematically and by way of example, the phases of the process and two embodiments of the device for the implementation thereof.

Les figures 1 à 4 représentent les différentes phases du procédé pour rattacher deux fils textiles, objet de l'invention; les figures 5 à 9 représentent dans une vue de dessus la première form d'exécution de ce dispositif et les positions des ses mécanismes dans les phases successives du procédé; la figure 10 est une vue en perspective à échelle élargie de l'organe de préhension rotatif du dispositif; la figure 11 est une vue en perspective agrandie d'un détail de l'organe d'appui des barbes; la figure 12 est une vue de dessus de la seconde forme d'exécution de ce dispositif; la figure 13 est une vue en perspective d'une chambre pneumatique pour tordre et détordre le fil.Figures 1 to 4 show the different phases of the process for joining two textile threads, object of the invention; Figures 5 to 9 show in a top view the first embodiment of this device and the positions of its mechanisms in the successive phases of the process; Figure 10 is an enlarged perspective view of the rotary gripping member of the device; Figure 11 is an enlarged perspective view of a detail of the beard support member; Figure 12 is a top view of the second embodiment of this device; FIG. 13 is a perspective view of a pneumatic chamber for twist and untwist the thread.

DESCRIPTION D'UNE REALISATION PREFEREEDESCRIPTION OF A PREFERRED EMBODIMENT

La figure 1 représente une première phase du procédé dans laquelle les fils 1,2 préalablement détordus sont soumis à des forces de traction axiale A afin de provoquer la séparation des barbes 3,4 et le déploiement et la parallélisation des fibres.FIG. 1 represents a first phase of the process in which the previously untwisted wires 1,2 are subjected to axial tensile forces A in order to cause the separation of the barbs 3,4 and the deployment and parallelization of the fibers.

Ensuite, on superpose lesdites barbes 3,4 tête-bêche en appliquant des forces transversales opposées B dans la zone contiguë aux extrémités res­pectives desdites barbes 3,4, tel que montré par la figure 2 pour les immobiliser et retenir la torsion individuelle des fibres et pour les presser l'une contre l'autre, en provoquant simultanément des glissements longitudinaux de sens opposés de ces barbes.Then, said barbs 3,4 are superimposed head to tail by applying opposite transverse forces B in the zone contiguous to the respective ends of said barbs 3,4, as shown in FIG. 2 to immobilize them and retain the individual twist of the fibers and to press them one against the other, simultaneously causing longitudinal sliding of opposite directions of these barbs.

Tel que montré par la figure 3, la torsion des barbes 3,4 superposées, dont les fibres sont entrelacées, est transmise progressivement depuis les deux extrémités respectives jusqu'à la partie médiane, en limitant la propagation de ladite torsion par l'application sur les barbes 3,4 desdites forces transversales opposées B, qui se déplacent vers la partie médiane. Enfin, lorsque ces forces sont supprimées, la torsion est transmise dans sa totalité, comme on peut observer sur la figure 4.As shown in FIG. 3, the torsion of the superimposed barbs 3,4, the fibers of which are interlaced, is transmitted progressively from the two respective ends to the middle part, limiting the propagation of said torsion by application to the barbs 3,4 of said opposite transverse forces B, which move towards the middle part. Finally, when these forces are eliminated, the torsion is transmitted in its entirety, as can be observed in FIG. 4.

Tel qu'on peut voir sur la figure 5, le dispositif pour rattacher les fils 1,2 comprend deux pinces de préhension 5,6, des extrémités des fils 1,2, deux organes de préhension rotatifs 7,8 pour induire une détorsion respectivement une torsion de ces extrémités de fils et deux organes d'ap­pui 9,10 des barbes respectives, présentant des surfaces complémentaires.As can be seen in FIG. 5, the device for reattaching the wires 1,2 comprises two gripping pliers 5,6, ends of the wires 1,2, two rotary gripping members 7,8 to induce untwisting respectively a twist of these ends of wires and two support members 9, 10 of the respective barbs, having complementary surfaces.

Le dispositif comprend, en plus, des organes de préhension 11,12 des extrémités des barbes retenues par les organes de préhension rotatifs 7,8.The device further comprises gripping members 11,12 of the ends of the barbs retained by the rotary gripping members 7,8.

Sur la figure 5, les deux fils 1,2 à rattacher sont disposés parallè­lement dans le dispositif et sont retenus par les pinces de préhension 5,6. Dans la position illustrée par cette figure, les organes de préhension 11,12 sont ouverts et les fils passent entre leurs machoires.In Figure 5, the two wires 1,2 to be attached are arranged parallel in the device and are retained by the gripping pliers 5,6. In the position illustrated by this figure, the gripping members 11, 12 are open and the wires pass between their jaws.

Sur la figure 6, les organes de préhension rotatifs 7,8 enroulent une portion des fils respectifs 1,2 en les détordant.In FIG. 6, the rotary gripping members 7,8 wind a portion of the respective wires 1,2 by untwisting them.

La figure 10 montre un de ces organes de préhension rotatifs 7 qui comprend dans son extrémité antérieure un doigt en spiral 13 grâce auquel, lorsque la pince tourne dans le sens indiqué par la flèche E, elle entraîne le fil 1,2 vers l'axe de rotation en le détordant et, lorsqu'elle tourne dans le sens indiqué par la flèche F, le fil est retordu en s'éloignant de l'axe.Figure 10 shows one of these rotary gripping members 7 which comprises in its front end a spiral finger 13 by which, when the clamp rotates in the direction indicated by the arrow E, it drives the wire 1,2 towards the axis of rotation by untwisting it, and when it turns in the direction indicated by arrow F, the thread is twisted away from the axis.

Tel qu'illustrées sur la figure 6, les pinces de préhension 5,6 des extrémités des fils 1,2 se déplacent axialement dans le sens des flèches D, ce qui provoque un glissement entre les fibres des barbes produisant un peignage initial de la portion de fils détordue. Simultanément, les organes de préhension 11, 12 pincent les extrémités des barbes en retenant la torsion rémanente des fibres. Les organes d'appui 9,10 des barbes présen­tent deux surfaces complémentaires et peuvent se déplacer autour d'un centre de rotation selon deux trajectoires qui vont depuis des positions respectives écartées des fils (figure 5) jusqu'à des positions respectives dans lesquelles leurs surfaces complémentaires sont adjacentes l'une à l'autre (figure 8).As illustrated in FIG. 6, the grippers 5,6 of the ends of the wires 1,2 move axially in the direction of the arrows D, which causes a sliding between the fibers of the barbs producing an initial combing of the portion untwisted son. Simultaneously, the gripping members 11, 12 pinch the ends of the barbs while retaining the residual twist of the fibers. The support members 9, 10 of the barbs have two complementary surfaces and can move around a center of rotation according to two trajectories which go from respective positions separated from the wires (FIG. 5) to respective positions in which their complementary surfaces are adjacent to each other (Figure 8).

On peut voir sur la figure 7 les organes d'appui 9,10 en positions intermédiaires entraînant les barbes des fils 1,2 appuyées sur des lames flexibles 15,16 des organes d'appui 9,10, ce qui provoque une traction sur les portions de fils détordues retenues par les organes de préhension 11,12 qui se traduit par un glissement entre les fibres retenues aux deux extré­mités de ces portions qui provoquent leur parallélisation. Des supports coudés 17, 18 favorisent la retenue des fibres de ces portions de fil détordues et retenues par les organes de préhension 11,12.We can see in Figure 7 the support members 9,10 in intermediate positions driving the barbs of the wires 1,2 supported on flexible blades 15,16 of the support members 9,10, which causes traction on the portions of untwisted yarns retained by the gripping members 11,12 which results in a sliding between the fibers retained at the two ends of these portions which cause their parallelization. Angled supports 17, 18 favor the retention of the fibers of these untwisted portions of wire and retained by the gripping members 11,12.

Les fils 1,2 sont guidés sur les organes d'appui 9,10 moyennant des encoches de guidage 19,20 aux extrémités respectives de ces organes d'appui 9,10 ainsi qu'aux extrémités des lames flexibles 15, 16 correspondantes, tel qu'illustré sur la figure 11 pour l'organe d'appui 9.The wires 1,2 are guided on the support members 9,10 by means of guide notches 19,20 at the respective ends of these support members 9,10 as well as at the ends of the corresponding flexible blades 15, 16, as as illustrated in FIG. 11 for the support member 9.

Lorsque les deux organes d'appui 9,10 sont réunis dans la position indiquée sur la figure 8, le frottement entre les surfaces en contact favorise l'interpénétration des fibres des barbes des deux fils. Les surfaces des deux lames flexibles 15,16 sont recouvertes de caoutchouc ou d'un matériel similaire pour faciliter la pose des barbes et le défibrage des fibres.When the two support members 9, 10 are brought together in the position indicated in FIG. 8, the friction between the surfaces in contact promotes the interpenetration of the fibers of the barbs of the two wires. The surfaces of the two flexible blades 15, 16 are covered with rubber or a similar material to facilitate the laying of the barbs and the defibration of the fibers.

Lorsque les organes d'appui 9,10 se déplacent, depuis la position de la figure 5 jusqu'à la position de la figure 8, ils entraînent les barbes des fils et provoquent leur allongement en exerçant finalement une dé­flexion sur la base de la barbe opposée.When the support members 9, 10 move, from the position of FIG. 5 to the position of FIG. 8, they drive the barbs of the wires and cause them to lengthen, finally exerting a deflection on the base of the beard. opposite.

Les organes d'appui 9,10 présentent des saillies respectives 21,22 qui viennent en appui sur les supports coudés 17,18 et provoquent la retenue de la barbe sur toute sa longueur.The support members 9, 10 have respective projections 21, 22 which bear on the elbow supports 17, 18 and cause the beard to be retained over its entire length.

Lorsque les organes de préhension rotatifs 7,8 tournent dans le sens indiqué par la flèche F de la figure 10, un ergot 23,24 saisit chacune des extrémités de la barbe opposée et l'enroule sur sa propre barbe commençant ainsi la phase de réintroduction de la torsion.When the rotary gripping members 7,8 rotate in the direction indicated by the arrow F in FIG. 10, a lug 23.24 grasps each of the ends of the opposite beard and wraps it on its own beard, thus beginning the phase of reintroduction of the torsion.

Celle-ci se poursuit avec la rotation des pinces 7,8. Simultanément, les organes d'appui 9,10 s'écartent progressivement de façon que l'obstacle qui empêchait la propagation de la torsion est éliminé permettant le trans­fert de cette torsion vers la partie médiane.This continues with the rotation of the clamps 7,8. Simultaneously, the support members 9, 10 progressively move apart so that the obstacle which prevented the propagation of the torsion is eliminated allowing the transfer of this torsion to the middle part.

Lorsque la séparation entre les organes d'appui 9,10 est totale, la torsion se transmet à toute la barbe et provoque la rattache des fils dans la partie médiane 25 (figure 9). En même temps, les organes de préhension rotatifs 7,8 libèrent le fil, lorsque le doigt en spiral 13,14 tourne en sens contraire, et le dispositif reste dans la position de la figure 9.When the separation between the support members 9, 10 is complete, the torsion is transmitted to the entire beard and causes the wires to be reattached in the middle part 25 (FIG. 9). At the same time, the rotary gripping members 7,8 release the wire, when the spiral finger 13,14 rotates in the opposite direction, and the device remains in the position of FIG. 9.

Dans la figure 12, les mêmes références que dans la forme d'exécution précédente ont été utilisées pour toutes les parties qui n'ont pas été modifiées.In FIG. 12, the same references as in the previous embodiment have been used for all the parts which have not been modified.

Tel qu'on peut voir, les organes de préhension rotatifs 7,8 sont substitués par des canaux 26,27 à section circulaire pour détordre et tordre les fils 1,2.As can be seen, the rotary gripping members 7,8 are replaced by channels 26,27 of circular section to untwist and twist the threads 1,2.

A cet effet, dans chacun des canaux 26, 27 débouchent tangentiellement deux conduits 28, 29 respectivement 30, 3l, disposés dans des positions diamétralement opposées et destinés à être reliés sélectivement à une source d'air sous pression pour produire dans ces canaux des tourbillons de sens opposés.To this end, in each of the channels 26, 27 open tangentially two conduits 28, 29 respectively 30, 3l, arranged in diametrically opposite positions and intended to be selectively connected to a source of pressurized air to produce in these channels vortices opposite directions.

Ces tourbillons d'air sont destinés à entraîner le fil disposé coaxia­lement au canal dans un sens pour le tordre ou dans le sens opposé pour le détordre suivant que l'air est injecté par un conduit ou un autre.These air vortices are intended to drive the wire arranged coaxially to the channel in a direction to twist it or in the opposite direction to untwist it depending on whether the air is injected through a duct or another.

Les canaux 26,27 comprennent une ouverture longitudinale (32) pour l'introduction et l'extraction du fil, visible sur la figure 13.The channels 26, 27 include a longitudinal opening (32) for the introduction and the extraction of the wire, visible in FIG. 13.

Claims (11)

1. Procédé pour rattacher deux fils textiles, dans lequel on forme sur chaque fil une barbe en détordant une portion de ce fil, on déploie les fibres dans la zone de la base de la barbe, on superpose ces barbes tête-­bêche en faisant s'interpénétrer les fibres des zones d'extrémité de chaque barbe et on retransfert ladite torsion simultanément depuis les deux extré­mités de chaque barbe, caractérisé en ce qu'après avoir détordu chaque portion desdits fils, on les soumet à une force de traction axiale pour provoquer le déploiement des barbes respectives et la parallélisation de leurs fibres; on applique ensuite dans la zone des extrémités respectives desdites barbes des forces opposées transversales (B) pour les immobiliser et retenir la torsion rémanente des fibres, en provoquant simultanément des glissements longitudinaux en sens opposés desdites barbes.1. Method for joining two textile threads, in which a beard is formed on each thread by untwisting a portion of this thread, the fibers are deployed in the area of the base of the beard, these barbs are superimposed head to tail by making s '' interpenetrate the fibers of the end zones of each beard and said twist is retransferred simultaneously from the two ends of each beard, characterized in that after having untwisted each portion of said threads, they are subjected to an axial tensile force to cause the deployment of the respective barbs and the parallelization of their fibers; is then applied in the area of the respective ends of said barbs opposite transverse forces (B) to immobilize and retain the residual twist of the fibers, simultaneously causing longitudinal sliding in opposite directions of said barbs. 2. Procédé selon la revendication 1, caractérisé en ce que la torsion retransférée auxdites barbes superposées tête-bêche, dont les fibres s'in­terpénètrent, est transmise progressivement depuis les deux extrémités jusqu'à la partie médiane en limitant la propagation de cette torsion par l'application desdites forces opposées transversales sur lesdites barbes et en déplaçant progessivement les points d'application respectifs de ces forces vers la zone médiane de ces barbes superposées jusqu'à la suppres­sion de ces forces.2. Method according to claim 1, characterized in that the torsion retransfered to said superimposed barbs head to tail, the fibers of which interpenetrate, is transmitted progressively from the two ends to the middle part by limiting the propagation of this torsion by the application of said opposite transverse forces on said barbs and by progressively moving the respective points of application of these forces towards the middle zone of these superimposed barbs until the removal of these forces. 3. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, qui comprend des pinces de préhension (5,6) des extrémités des fils respectifs (1,2), des organes de préhension rotatifs (7,8) des fils, les­quels enroulent une portion de ceux-ci en les détordant et des organes d'appui (9,10) des barbes respectives, lesquelles peuvent se déplacer pour réunir ces barbes, caractérisé en ce que les pinces de préhension (5,6) des extrémités des fils respectifs peuvent se déplacer axialement, les organes d'appui (9,10) des barbes présentent des surfaces complémentaires et peu­vent se déplacer entre deux positions limites, dans l'une desquelles ces organes d'appui sont écartés desdits fils, et dans l'autre desquelles lesdites surfaces complémentaires sont adjacentes l'une à l'autre, et en ce qu'il comprend, en plus, des organes de préhension (11,12) des extrémités des barbes retenues par les organes de préhension rotatifs pour les immobi­liser et retenir la torsion rémanente des fibres.3. Device for implementing the method according to claim 1, which comprises gripping pliers (5,6) of the ends of the respective wires (1,2), rotary gripping members (7,8) of the wires, which wind a portion of them by untwisting them and of the support members (9,10) of the respective barbs, which can move to join these barbs, characterized in that the grippers (5,6) of the ends respective wires can move axially, the bearers (9,10) of the barbs have complementary surfaces and can move between two limit positions, in one of which these support members are spaced from said wires, and in the other of which said complementary surfaces are adjacent to each other, and in that it further comprises gripping members (11, 12) of the ends of the barbs retained by the rotary gripping members for the immobilize and retain the residual twist of the fibers s. 4. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, caractérisé en ce qu'il comprend des pinces de préhension (5,6) des extrémités des fils respectifs (1,2) deux canaux (26,27), destinés à rece­voir chacun l'un desdits fils et dans chacun desquels débouchent tangen­tiellement deux conduits (28,29; 30,31) diamétralement opposés destinés à être reliés sélectivement à une source de fluide sous pression pour entraî­ner les fils respectifs introduits dans lesdits canaux dans deux sens de rotations respectifs provoquant alternativement la détorsion et la torsion des fils et des organes d'appui (9,10) des barbes respectives, lesdites pinces de préhension (5,6) étant déplaçables axialement, les organes d'ap­pui (9,10) présentant des surfaces complémentaires et étant susceptibles de se déplacer entre deux positions limites dans l'une desquelles ces organes d'appui sont écartés desdits fils et dans l'autre desquelles lesdites surfaces complémentaires sont adjacentes l'une à l'autre et en ce qu'il comprend des organes de préhension (11,12) des extrémités des barbes rete­nues par les organes de préhension rotatifs pour les immobiliser et retenir la torsion rémanente des fibres.4. Device for implementing the method according to claim 1, characterized in that it comprises gripping pliers (5,6) ends of the respective wires (1,2) two channels (26,27), each intended to receive one of said wires and in each of which tangentially open two diametrically opposed conduits (28,29; 30,31) intended to be selectively connected to a source of pressurized fluid for driving the respective wires introduced into said channels in two respective directions of rotation alternately causing the twisting and twisting of the wires and of the support members (9,10) of the respective barbs, said grippers (5,6) being axially displaceable, the support members (9,10) having complementary surfaces and being capable of moving between two limit positions in one of which these support members are spaced from said wires and in the other of which said complementary surfaces are adjacent to each other and in that it comprises gripping members (11,12) of the ends of the barbs retained by the rotary gripping members for immobilize them and retain the residual twist of the fibers. 5. Dispositif selon la revendication 3 ou 4, caractérisé en ce chacun des organes d'appui (9,10) des barbes est monté oscillant autour d'un axe et comprend un corps principal pourvu, dans sa partie la plus éloignée de cet axe, d'éléments de guidage du fil (19) ainsi qu'une lame flexible (15,16) solidaire par une extrémité de ce corps principal pour provoquer, lorsque les organes d'appui (9,10) se réunissent, un allongement des barbes engendrant leur frottement et leur interpénétration mutuelles.5. Device according to claim 3 or 4, characterized in that each of the support members (9,10) of the barbs is mounted oscillating about an axis and comprises a main body provided, in its part farthest from this axis , wire guide elements (19) and a flexible blade (15,16) secured by one end of this main body to cause, when the support members (9,10) meet, an elongation of the beards causing their mutual friction and interpenetration. 6. Dispositif selon la revendication 3 ou 4, caractérisé en ce que les surfaces des organes d'appui (9,10) des barbes sont recouvertes d'une matière abrasive et élastique.6. Device according to claim 3 or 4, characterized in that the surfaces of the support members (9,10) of the barbs are covered with an abrasive and elastic material. 7. Dispositif selon la revendication 3 ou 4, caractérisé en ce que chacun des organes d'appui (9,10) des barbes comprend des parois latérales qui, lorsque lesdits organes d'appui sont mutuellement superposés, consti­tuent une chambre, dans laquelle abouti de l'air sous pression, afin de provoquer un effet de turbulence qui favorise l'union mutuelle entre fibres des deux barbes.7. Device according to claim 3 or 4, characterized in that each of the support members (9,10) of the barbs comprises side walls which, when said support members are mutually superimposed, constitute a chamber, in which terminated pressurized air, in order to cause a turbulence effect which promotes the mutual union between fibers of the two barbs. 8. Dispositif selon la revendication 3 ou 4, caractérisé par le fait qu'il comprend des arrêts fixes sur lesquels la saillie plus extérieure du corps principal de chacun des organes d'appui des barbes est appuyée, au moment de la superposition, pour retenir les extrémités de celles-ci.8. Device according to claim 3 or 4, characterized in that it comprises fixed stops on which the more external projection of the main body of each of the bearer support members is supported, at the time of superposition, to retain the ends of these. 9. Dispositif selon la revendication 3 ou 4, caractérisé en ce que chacun des organes de préhension rotatifs (7,8) comprend à son extrémité antérieure un doigt en spirale (13,14), de façon que, lorsqu'il tourne dans un sens déterminé, le fil est emmené vers l'axe de rotation et, lorsqu'il tourne dans l'autre sens, il l'écarte de celui-ci.9. Device according to claim 3 or 4, characterized in that each of the rotary gripping members (7,8) comprises at its anterior end a spiral finger (13,14), so that, when it rotates in a determined direction, the wire is led towards the axis of rotation and, when it turns in the other direction, it moves it away from it. 10. Dispositif selon la revendication 3, 4, 7 ou 8, caractérisé en ce que chacun des organes de préhension rotatifs (7,8) comprend dans sa partie frontale un ergot (23,24) en saillie pour provoquer la séparation des fibres dans les extrémités des barbes guidées par les deux saillies du corps principal de l'organe d'appui (9,10) et retenues par ledit arrêt, et provoquer l'enroulement autour de la barbe dans la zone voisine de l'organe de préhension rotatif opposée.10. Device according to claim 3, 4, 7 or 8, characterized in that each of the rotary gripping members (7,8) comprises in its front part a lug (23,24) projecting to cause the separation of the fibers in the ends of the beards guided by the two projections of the main body of the support member (9,10) and retained by said stop, and cause the winding around the beard in the area adjacent to the rotary gripping member opposite. 11. Dispositif selon la revendication 4, caractérisé par le fait que chacun desdits canaux (26,27) comporte une ouverture longitudinale (32) pour l'introduction et l'extraction du fil.11. Device according to claim 4, characterized in that each of said channels (26,27) has a longitudinal opening (32) for the introduction and extraction of the wire.
EP87810328A 1986-06-11 1987-06-09 Method and apparatus for joining two textile yarns together Expired - Lifetime EP0249578B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES555928 1986-06-11
ES555928A ES8705935A1 (en) 1986-06-11 1986-06-11 Method and apparatus for twisting and splicing yarn
ES8701457 1987-05-18
ES8701457A ES2003800A6 (en) 1987-05-18 1987-05-18 Jig for mechanically intertwining the overlapping thread ends - using mobile points of lateral pressure to progressively restore mutual twist in straightened portions of the threads

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EP0249578A1 true EP0249578A1 (en) 1987-12-16
EP0249578B1 EP0249578B1 (en) 1991-02-06

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EP87810328A Expired - Lifetime EP0249578B1 (en) 1986-06-11 1987-06-09 Method and apparatus for joining two textile yarns together

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US (1) US4813220A (en)
EP (1) EP0249578B1 (en)
DE (1) DE3767925D1 (en)
ES (1) ES2021390B3 (en)

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EP0491104A1 (en) * 1990-12-19 1992-06-24 Carlos Pujol-Isern Procedure to splice two ends of yarn, one to the other, and the connection obtained by this procedure

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DE10150591A1 (en) * 2001-10-12 2003-04-17 Schlafhorst & Co W yarn splicing
EP3736236A1 (en) * 2019-05-08 2020-11-11 Heberlein AG Splice head for a splicing device, splicing device with at least one splice head, method for splicing yarns with splice head, computer program product

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EP0491104A1 (en) * 1990-12-19 1992-06-24 Carlos Pujol-Isern Procedure to splice two ends of yarn, one to the other, and the connection obtained by this procedure
US5277018A (en) * 1990-12-19 1994-01-11 Pujol Isern Carlos Method for connecting two yarn ends to one another and a connection obtained by this method

Also Published As

Publication number Publication date
EP0249578B1 (en) 1991-02-06
DE3767925D1 (en) 1991-03-14
US4813220A (en) 1989-03-21
ES2021390B3 (en) 1991-11-01

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