EP0432030A1 - Device for producing yarns by meshing - Google Patents

Device for producing yarns by meshing Download PDF

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Publication number
EP0432030A1
EP0432030A1 EP90403434A EP90403434A EP0432030A1 EP 0432030 A1 EP0432030 A1 EP 0432030A1 EP 90403434 A EP90403434 A EP 90403434A EP 90403434 A EP90403434 A EP 90403434A EP 0432030 A1 EP0432030 A1 EP 0432030A1
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EP
European Patent Office
Prior art keywords
needle
rotation
spindle
wire
hollow spindle
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.)
Withdrawn
Application number
EP90403434A
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German (de)
French (fr)
Inventor
Robert Guigal
Jacques Maguin
André Lyonnet
Régis Lacroix
Robert Ogliengo
Jean-Claude Gianfalla
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institut Textile de France
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Institut Textile de France
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Publication date
Application filed by Institut Textile de France filed Critical Institut Textile de France
Publication of EP0432030A1 publication Critical patent/EP0432030A1/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
    • D02G3/343—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns using hollow spindles

Definitions

  • the present invention relates to the production of yarns, in particular fancy yarns, by mesh, that is to say of yarns whose structure consists of a stack of stitches made from one or more elementary yarns. It relates more particularly to a device for the high speed production of such wires.
  • French device FR.A.2.563.245 discloses a device making it possible to produce yarns of this type, in particular fancy yarns from at least two elementary yarns.
  • This known device is disposed between the source of supply of the elementary wires and the means of winding the fancy wire formed. It comprises, mounted on a common support, a hollow rotary spindle inside which passes the produced yarn, said spindle supporting and driving in rotation at least one knitting needle, means making it possible to present at least one of the threads elementary in the beak of the needle during the rotation of the spindle and a fixed assembly making it possible to carry out the felling of the meshes formed on the needle and the guiding of the wire produced inside the internal channel of the hollow spindle.
  • the embodiment which is described in this document and illustrated by the drawings only refers to one type of knitting needle, namely a palette or flap needle or "self-acting" needle. Contrary to the usual formation of the mesh where the needle receives a movement from top to bottom defining the operations called picking and felling, in the present case the needle receives a circular movement around a fixed assembly, for example a cam with a particular profile, which transmits to the wire a movement from top to bottom thus carrying out the picking and the felling, with closing and opening of the valve for each formation of a mesh.
  • a fixed assembly for example a cam with a particular profile
  • the valve of the needle having to open and close at each revolution of the spindle, the production speed of the device is therefore limited to the possibilities of movement of the needle valve.
  • the spindle rotation speed was 1000 rpm with a draw speed of the wire formed of 120 m / min; the length of each mesh was therefore 120 mm.
  • the aim which the applicant has set for himself is to improve the known device by increasing the speed of rotation of the hollow spindle so as to obtain greater productivity and / or a smaller mesh size, for example by achieving speeds of 15,000 rpm.
  • the needle being a simple hook needle, without valve, the device comprises means for driving the needle in rotation on itself at the same angular speed and in the opposite direction to the rotation of the brooch.
  • the needle nose keeps strictly the same orientation during the rotation of the hollow pin which supports and drives the needle in rotation. This allows the formation of the mesh, the wire surrounding the barrel of the needle passing behind the hook during felling.
  • the means for driving the needle on itself are driven by the rotation of the hollow spindle.
  • the hollow spindle comprises two identical second parts which are arranged symmetrically with respect to the first part.
  • the parts are, according to the preferred version of the invention, toothed pulleys and the drive system of the second pulley (s) by the first pulley consists of a toothed belt.
  • the parts can also be pinions, the teeth of the first pinion meshing with the teeth of the second pinion (s), ensuring the drive of the latter.
  • FIG. 1 shows the production of a fancy yarn 4 from two elementary yarns 1, 2 thanks to the device 3 of the invention.
  • This device comprises, mounted on a common support 5, a hollow pin 6 whose cylindrical body supports a needle 7 without valve and is rotated by the fixing strap 11.
  • Two fixed cams 9, 10 are placed under the hollow pin 6 ; the particular profile of these two cams 9, 10 determines between them a passage 12, making it possible to ensure the felling of the mesh and the guiding of the wire formed inside the internal channel during the rotation of the needle 7 around of the two cams 9, 10.
  • the two wires 1, 2 are presented alternately in the hook of the needle 7 thanks to the presentation device 8.
  • FIG. 2 shows the improved structure of the hollow spindle 6.
  • This hollow spindle 6 is mounted around the central tube 13, inside which passes the formed wire 4.
  • the body of the spindle is made up of three parts: a central part 14 and two covers, upper 15 and lower 16, forming a cylindrical body.
  • the spindle 6 can rotate in rotation around the central tube 13 thanks to the two bearings 17, 18, mounted on the tube in the axial part of each of the two covers 15, 16.
  • Two circlips 19, 20 are arranged in grooves made in the central tube 13 and prevent the pin 6 from moving along the tube 13.
  • the central pulley 21 is fixed and mounted on the central tube 13.
  • the other two pulleys 22, 23 are offset from the central pulley 21 ; they are symmetrical with respect to the axis of the tube 13.
  • the pulleys 22, 23 are integral with two axes 24, 25; each of these axes 24, 25 is rotatably mounted by two bearings 26, 27, one 26 being fixed in the lower cover 16 and the other in the central part 14 of the body of the spindle 6, on both sides other of the corresponding pulley 23.
  • the three pulleys 21, 22, 23 are notched and have exactly the same configuration and in particular the same number of teeth.
  • a toothed belt 28 is stretched over the periphery of the three pulleys 21, 22, 23. It is reinforced, not extensible and can withstand temperatures of 80 ° C. Given its arrangement, inside the body of the spindle 6, the belt 28 cannot come out of the notches of the pulleys 21, 22, 23.
  • One or the other (or both) axis 24, 25 supports the base of the knitting needle 7 without valve, the base of the needle 7 being fixed in the central part 29 of the corresponding axis.
  • FIG. 3A shows more precisely the arrangement of the active members rotating the needle 7 on itself during the rotation of the spindle 6, which have just been described.
  • the three pulleys being aligned in a given direction AA ′
  • the spout 30 of the needle 7 has a radial orientation, which coincides with AA ′.
  • the lateral pulleys 22 and 23 are driven in rotation, being housed in the rotating body of the spindle 6. In doing so, they rotate around the central pulley 21. Since the central pulley 21 is fixed, the toothed belt 28 which is held in position relative to the central pulley 21 by its notches is caused to rotate around the pulley by the same angle of 90 °.
  • This angular displacement causes the rotation of the two lateral pulleys 22, 23 by the same angle, in the direction of the arrow G, opposite to that of the arrow F, and the beak 30 of the needle 7 always keeps the same direction, in the present case parallel to the axis AA ′, whatever the angle of rotation of the spindle.
  • Figures 4 show the formation of the mesh during the rotation of the needle 7.
  • the beak 30 of the needle 7 carries with it, in its rotation, the wire 1 which is presented to it through the power system.
  • the needle nozzle 30 always has the same orientation, that is to say that it is turned towards the cams 9, 10: the wire 1 comes out of the spout 30 because the profile of the cams 9, 10 displaces the wire 1 upwards relative to the spout 30.
  • wires of different structures have been produced up to spindle rotation speeds of 15,000 rpm, the latter being provided with one or two hook needles.
  • toothed pulleys 21, 22, 23 and toothed belt 23 can be replaced by a set of three identical pinions, the teeth of the central pinion meshing with the teeth of the eccentric pinion or pinions.

Abstract

The device for producing yarns by the meshing of at least one elementary yarn comprises in a known way, arranged between the feed source of the elementary yarn and the means for winding the formed yarn: a. a rotary hollow spindle supporting and driving in rotation at least one knitting needle; b. means for offering the elementary yarn into the beard of the needle during the rotation of said spindle; c. and a stationary assembly making it possible to carry out the knockover of the stitches formed on the needle and the guidance of the yarn formed on the inside of the internal channel of the hollow spindle. According to the invention, the needle (7) is a latch needle and the device comprises driving means, for example a set of pulleys (21, 22, 23) and a notched belt (28) which are capable of driving the needle (7) in rotation on itself at the same angular speed as and in the opposite direction to the rotation of the spindle (6). <IMAGE>

Description

La présente invention concerne la production de fils, notamment de fils fantaisie, par maillage, c'est-à-dire de fils dont la structure est constituée par un empilement de mailles réalisées à partir d'un ou plusieurs fils élémentaires. Elle concerne plus particulièrement un dispositif pour la production à grande vitesse de tels fils.The present invention relates to the production of yarns, in particular fancy yarns, by mesh, that is to say of yarns whose structure consists of a stack of stitches made from one or more elementary yarns. It relates more particularly to a device for the high speed production of such wires.

On connaît par le brevet français FR.A.2.563.245 un dispositif permettant de réaliser des fils de ce type, notamment des fils fantaisie à partir d'au moins deux fils élémentaires. Ce dispositif connu est disposé entre la source d'amenée des fils élémentaires et les moyens de renvidage du fil fantaisie formé. Il comporte, monté sur un support commun, une broche creuse rotative à l'intérieur de laquelle passe le fil réalisé, ladite broche supportant et entraînant en rotation au moins une aiguille de tricotage, des moyens permettant de présenter au moins l'un des fils élémentaires dans le bec de l'aiguille lors de la rotation de la broche et un ensemble fixe permettant de réaliser l'abattage des mailles formées sur l'aiguille et le guidage du fil réalisé à l'intérieur du canal interne de la broche creuse. Bien que cela ne soit pas une limitation explicite, le mode de réalisation qui est décrit dans ce document et illustré par les dessins ne fait référence qu'à un seul type d'aiguille de tricotage, à savoir une aiguille à palette ou à clapet ou aiguille "self-acting". A l'inverse de la formation habituelle de la maille où l'aiguille reçoit un mouvement de haut en bas définissant les opérations dénommées cueillage et abattage, dans le cas présent l'aiguille reçoit un mouvement circulaire autour d'un ensemble fixe, par exemple une came au profil particulier, qui transmet au fil un mouvement de haut en bas réalisant ainsi le cueillage et l'abattage, avec fermeture et ouverture du clapet pour chaque formation d'une maille.French device FR.A.2.563.245 discloses a device making it possible to produce yarns of this type, in particular fancy yarns from at least two elementary yarns. This known device is disposed between the source of supply of the elementary wires and the means of winding the fancy wire formed. It comprises, mounted on a common support, a hollow rotary spindle inside which passes the produced yarn, said spindle supporting and driving in rotation at least one knitting needle, means making it possible to present at least one of the threads elementary in the beak of the needle during the rotation of the spindle and a fixed assembly making it possible to carry out the felling of the meshes formed on the needle and the guiding of the wire produced inside the internal channel of the hollow spindle. Although this is not an explicit limitation, the embodiment which is described in this document and illustrated by the drawings only refers to one type of knitting needle, namely a palette or flap needle or "self-acting" needle. Contrary to the usual formation of the mesh where the needle receives a movement from top to bottom defining the operations called picking and felling, in the present case the needle receives a circular movement around a fixed assembly, for example a cam with a particular profile, which transmits to the wire a movement from top to bottom thus carrying out the picking and the felling, with closing and opening of the valve for each formation of a mesh.

Le clapet de l'aiguille devant s'ouvrir et se fermer à chaque tour de broche, la vitesse de production du dispositif est donc limitée aux possibilités de mouvement du clapet de l'aiguille.The valve of the needle having to open and close at each revolution of the spindle, the production speed of the device is therefore limited to the possibilities of movement of the needle valve.

Dans les exemples cités dans le brevet FR.A.2.563.245, la vitesse de rotation de la broche était de 1000 t/mn avec une vitesse d'appel du fil formé de 120 m/mn; la longueur de chaque maille était donc de 120 mm.In the examples cited in patent FR.A.2,563,245, the spindle rotation speed was 1000 rpm with a draw speed of the wire formed of 120 m / min; the length of each mesh was therefore 120 mm.

Le but que s'est fixé le demandeur est de perfectionner le dispositif connu en augmentant la vitesse de rotation de la broche creuse de telle sorte d'obtenir une plus grande productivité et/ou une dimension de mailles plus réduite, par exemple en atteignant des vitesses de 15.000 t/mn.The aim which the applicant has set for himself is to improve the known device by increasing the speed of rotation of the hollow spindle so as to obtain greater productivity and / or a smaller mesh size, for example by achieving speeds of 15,000 rpm.

De telles vitesses ne peuvent être atteintes que si aucun élément mécanique ne doit être déplacé lors de la rotation de l'aiguille pour la formation de la maille.Such speeds can only be achieved if no mechanical element has to be moved during the rotation of the needle for the formation of the mesh.

Ceci ne peut être obtenu, selon le demandeur, qu'en mettant en oeuvre une aiguille du type crochet, sans clapet. Cependant dans ce cas, l'enseignement que tire l'homme du métier du brevet FR.A.2.563.245 ne le conduit pas à la formation d'un empilement de mailles; en effet dans le mode de réalisation qui y est décrit si l'on remplace l'aiguille à clapet par une aiguille sans clapet, le fil entourant le fût de l'aiguille ne va pas passer au-dessus du crochet, puisqu'il n'est plus guidé par le clapet, mais va être bloqué par le crochet: la maille ne sera pas formée.According to the applicant, this can only be obtained by using a hook type needle, without a valve. However in this case, the teaching which the person skilled in the art draws from the patent FR.A.2.563.245 does not lead to the formation of a stack of meshes; indeed in the embodiment described there if we replace the valve needle with a needle without valve, the thread surrounding the barrel of the needle will not pass over the hook, since it is more guided by the valve, but will be blocked by the hook: the mesh will not be formed.

Or le demandeur a trouvé, et c'est ce qui fait l'objet de l'invention, un dispositif perfectionné de production de fil par maillage qui pallie l'inconvénient précité en ce qu'aucun élément mécanique ne doit être déplacé lors de la rotation de l'aiguille pour la formation de la maille.However, the applicant has found, and this is the subject of the invention, an improved device for producing wire by mesh which overcomes the aforementioned drawback in that no mechanical element has to be moved during the rotation of the needle for the formation of the stitch.

Ce dispositif comporte de manière connue, entre la source d'amenée d'au moins un fil élémentaire et des moyens de renvidage du fil formé,

  • a. une broche creuse rotative supportant et entraînant en rotation au moins une aiguille de tricotage,
  • b. des moyens de présentation du fil élémentaire dans le bec de l'aiguille lors de la rotation de la broche,
  • c. et un ensemble fixe permettant de réaliser l'abattage des mailles formées sur l'aiguille et le guidage du fil formé à l'intérieur du canal interne de la broche creuse.
This device comprises, in a known manner, between the supply source of at least one elementary wire and means for winding the wire formed,
  • at. a rotary hollow spindle supporting and driving in rotation at least one knitting needle,
  • b. means for presenting the elementary wire in the spout the needle during the rotation of the spindle,
  • vs. and a fixed assembly allowing the knitting of the meshes formed on the needle and the guiding of the wire formed inside the internal channel of the hollow pin to be carried out.

Selon l'invention, l'aiguille étant une simple aiguille à crochet, sans clapet, le dispositif comporte des moyens d'entraînement de l'aiguille en rotation sur elle-même à la même vitesse angulaire et en sens inverse de la rotation de la broche.According to the invention, the needle being a simple hook needle, without valve, the device comprises means for driving the needle in rotation on itself at the same angular speed and in the opposite direction to the rotation of the brooch.

Du fait de la rotation de l'aiguille sur elle-même dans les conditions caractéristiques de l'invention, le bec de l'aiguille conserve strictement la même orientation pendant la rotation de la broche creuse qui supporte et entraîne l'aiguille en rotation. Ceci permet la formation de la maille, le fil entourant le fût de l'aiguille passant derrière le crochet lors de l'abattage.Due to the rotation of the needle on itself under the characteristic conditions of the invention, the needle nose keeps strictly the same orientation during the rotation of the hollow pin which supports and drives the needle in rotation. This allows the formation of the mesh, the wire surrounding the barrel of the needle passing behind the hook during felling.

De préférence les moyens d'entraînement de l'aiguille sur elle-même sont entraînés par la rotation de la broche creuse.Preferably the means for driving the needle on itself are driven by the rotation of the hollow spindle.

Par exemple la broche creuse comporte:

  • a. un tube central;
  • b. une première pièce montée fixe sur le tube central;
  • c. un corps rotatif, solidaire axialement du tube central par des roulements;
  • d. au moins une seconde pièce, montée sur roulement à l'intérieur du corps rotatif, ayant la même configuration que la première pièce et excentrée par rapport à celle-ci;
  • e. des moyens d'entraînement de la seconde pièce par la première lors de la rotation du corps rotatif autour du tube central, l'aiguille étant montée sur l'axe de rotation de la seconde pièce.
For example, the hollow spindle includes:
  • at. a central tube;
  • b. a first part mounted fixed on the central tube;
  • vs. a rotary body, axially integral with the central tube by bearings;
  • d. at least one second part, mounted on a bearing inside the rotary body, having the same configuration as the first part and eccentric with respect thereto;
  • e. means for driving the second part by the first during the rotation of the rotary body around the central tube, the needle being mounted on the axis of rotation of the second part.

De préférence, afin d'assurer l'équilibre mécanique du corps rotatif, la broche creuse comporte deux secondes pièces identiques et disposées symétriquement par rapport à la première pièce.Preferably, in order to ensure the mechanical balance of the rotary body, the hollow spindle comprises two identical second parts which are arranged symmetrically with respect to the first part.

Les pièces sont, selon la version préférée de l'invention, des poulies crantées et le système d'entraînement de la ou des secondes poulies par la première poulie consiste en une courroie crantée.The parts are, according to the preferred version of the invention, toothed pulleys and the drive system of the second pulley (s) by the first pulley consists of a toothed belt.

Les pièces peuvent être aussi des pignons, les dents du premier pignon s'engrenant dans les dents du ou des seconds pignons, assurant l'entraînement de celui ou de ceux-ci.The parts can also be pinions, the teeth of the first pinion meshing with the teeth of the second pinion (s), ensuring the drive of the latter.

La présente invention sera mieux comprise à la lecture de la description qui va être faite du mode préféré de réalisation du dispositif de production de fils par maillage, illustré par le dessin annexé dans lequel:

  • La figure 1 est une vue schématique de l'ensemble du dispositif
  • La figure 2 est une vue en coupe axiale de la broche creuse
  • Les figures 3A et 3B illustrent l'orientation de l'aiguille lors de la rotation de la broche creuse
  • Les figures 4A et 4B illustrent les opérations respectivement de cueillage et d'abattage lors de la formation de la maille.
The present invention will be better understood on reading the description which will be given of the preferred embodiment of the device for producing wires by mesh, illustrated by the appended drawing in which:
  • Figure 1 is a schematic view of the entire device
  • Figure 2 is an axial sectional view of the hollow spindle
  • FIGS. 3A and 3B illustrate the orientation of the needle during the rotation of the hollow spindle
  • FIGS. 4A and 4B illustrate the picking and felling operations respectively during the formation of the mesh.

On a représenté sur la figure 1 la production d'un fil fantaisie 4 à partir de deux fils élémentaires 1, 2 grâce au dispositif 3 de l'invention. Ce dispositif comprend, monté sur un support commun 5, une broche creuse 6 dont le corps cylindrique supporte une aiguille 7 sans clapet et est entraîné en rotation par la courroie de fixation 11. Deux cames fixes 9, 10 sont placées sous la broche creuse 6; le profil particulier de ces deux cames 9, 10 détermine entre elles un passage 12, permettant d'assurer l'abattage de la maille et le guidage du fil formé à l'intérieur du canal interne lors de la rotation de l'aiguille 7 autour des deux cames 9, 10. Les deux fils 1, 2 sont présentés alternativement dans le crochet de l'aiguille 7 grâce au dispositif 8 de présentation.FIG. 1 shows the production of a fancy yarn 4 from two elementary yarns 1, 2 thanks to the device 3 of the invention. This device comprises, mounted on a common support 5, a hollow pin 6 whose cylindrical body supports a needle 7 without valve and is rotated by the fixing strap 11. Two fixed cams 9, 10 are placed under the hollow pin 6 ; the particular profile of these two cams 9, 10 determines between them a passage 12, making it possible to ensure the felling of the mesh and the guiding of the wire formed inside the internal channel during the rotation of the needle 7 around of the two cams 9, 10. The two wires 1, 2 are presented alternately in the hook of the needle 7 thanks to the presentation device 8.

Pour le détail de réalisation de ces organes et leur fonctionnement, on se reportera au texte du brevet FR.A.2.563.245 dont l'enseignement fait partie intégrante de la présente description.For the detail of the construction of these bodies and their operation, reference is made to the text of patent FR.A.2.563.245, the teaching of which forms an integral part of this description.

On a représenté sur la figure 2 la structure perfectionnée de la broche creuse 6. Cette broche creuse 6 est montée autour du tube central 13, à l'intérieur duquel passe le fil formé 4. Le corps de la broche est composé de trois parties: une partie centrale 14 et deux couvercles, supérieur 15 et inférieur 16, formant un corps cylindrique.FIG. 2 shows the improved structure of the hollow spindle 6. This hollow spindle 6 is mounted around the central tube 13, inside which passes the formed wire 4. The body of the spindle is made up of three parts: a central part 14 and two covers, upper 15 and lower 16, forming a cylindrical body.

La broche 6 peut tourner en rotation autour du tube central 13 grâce aux deux roulements 17, 18, montés sur le tube dans la partie axiale de chacun des deux couvercles 15, 16. Deux circlips 19, 20 sont disposés dans des rainures pratiquées dans le tube central 13 et empêchent la broche 6 de se déplacer le long du tube 13.The spindle 6 can rotate in rotation around the central tube 13 thanks to the two bearings 17, 18, mounted on the tube in the axial part of each of the two covers 15, 16. Two circlips 19, 20 are arranged in grooves made in the central tube 13 and prevent the pin 6 from moving along the tube 13.

Dans la partie intérieure du corps de la broche 6 sont logées trois poulies 21, 22, 23. La poulie centrale 21 est fixe et montée sur le tube central 13. Les deux autres poulies 22, 23 sont excentrées par rapport à la poulie centrale 21; elles sont symétriques par rapport à l'axe du tube 13. Les poulies 22, 23 sont solidaires de deux axes 24, 25; chacun de ces axes 24, 25 est monté rotatif grâce à deux roulements 26, 27, l'un 26 étant fixé dans le couvercle inférieur 16 et l'autre dans la partie centrale 14 du corps de la broche 6, de part et d'autre de la poulie correspondante 23.In the inner part of the body of the spindle 6 are housed three pulleys 21, 22, 23. The central pulley 21 is fixed and mounted on the central tube 13. The other two pulleys 22, 23 are offset from the central pulley 21 ; they are symmetrical with respect to the axis of the tube 13. The pulleys 22, 23 are integral with two axes 24, 25; each of these axes 24, 25 is rotatably mounted by two bearings 26, 27, one 26 being fixed in the lower cover 16 and the other in the central part 14 of the body of the spindle 6, on both sides other of the corresponding pulley 23.

Les trois poulies 21, 22, 23 sont crantées et ont exactement la même configuration et notamment le même nombre de dents. Une courroie crantée 28 est tendue sur la périphérie des trois poulies 21, 22, 23. Elle est armée, non extensible et peut résister à des températures de 80°C. Compte-tenu de sa disposition, à l'intérieur du corps de la broche 6, la courroie 28 ne peut pas sortir des crans des poulies 21, 22, 23.The three pulleys 21, 22, 23 are notched and have exactly the same configuration and in particular the same number of teeth. A toothed belt 28 is stretched over the periphery of the three pulleys 21, 22, 23. It is reinforced, not extensible and can withstand temperatures of 80 ° C. Given its arrangement, inside the body of the spindle 6, the belt 28 cannot come out of the notches of the pulleys 21, 22, 23.

L'un ou l'autre (ou les deux) axe 24, 25 supporte la base de l'aiguille de tricotage 7 sans clapet, la base de l'aiguille 7 étant fixée dans la partie centrale 29 de l'axe correspondant.One or the other (or both) axis 24, 25 supports the base of the knitting needle 7 without valve, the base of the needle 7 being fixed in the central part 29 of the corresponding axis.

La figure 3A montre plus précisément la disposition des organes actifs mettant en rotation l'aiguille 7 sur elle-même lors de la rotation de la broche 6, qui viennent d'être décrits. Sur la figure 3A, les trois poulies étant alignées selon une direction donnée AA′, le bec 30 de l'aiguille 7 a une orientation radiale, qui est confondue avec AA′.FIG. 3A shows more precisely the arrangement of the active members rotating the needle 7 on itself during the rotation of the spindle 6, which have just been described. In FIG. 3A, the three pulleys being aligned in a given direction AA ′, the spout 30 of the needle 7 has a radial orientation, which coincides with AA ′.

Lors de la rotation de la broche creuse 6, dans le sens de la flèche F, les poulies latérales 22 et 23 sont entraînées en rotation, étant logées dans le corps tournant de la broche 6. Ce faisant, elles tournent autour de la poulie centrale 21. Etant donné que la poulie centrale 21 est fixe, la courroie crantée 28 qui est maintenue en position par rapport à la poulie centrale 21 par ses crans est amenée à tourner autour de la poulie d'un même angle de 90°. Ce déplacement angulaire provoque la rotation des deux poulies latérales 22, 23 du même angle, dans le sens de la flèche G, opposé à celui de la flèche F, et le bec 30 de l'aiguille 7 conserve toujours la même direction, dans le cas présent parallèle à l'axe AA′, quel que soit l'angle de rotation de la broche.During the rotation of the hollow spindle 6, in the direction of the arrow F, the lateral pulleys 22 and 23 are driven in rotation, being housed in the rotating body of the spindle 6. In doing so, they rotate around the central pulley 21. Since the central pulley 21 is fixed, the toothed belt 28 which is held in position relative to the central pulley 21 by its notches is caused to rotate around the pulley by the same angle of 90 °. This angular displacement causes the rotation of the two lateral pulleys 22, 23 by the same angle, in the direction of the arrow G, opposite to that of the arrow F, and the beak 30 of the needle 7 always keeps the same direction, in the present case parallel to the axis AA ′, whatever the angle of rotation of the spindle.

Les figures 4 montrent la formation de la maille lors de la rotation de l'aiguille 7. Lors du cueillage (figure 4A), le bec 30 de l'aiguille 7 entraîne avec lui, dans sa rotation, le fil 1 qui lui est présenté par le système d'alimentation. Lors de l'abattage (figure 4B) qui se déroule après que la broche 6 ait tourné de 180° par rapport au cueillage, le bec 30 de l'aiguille a toujours la même orientation, c'est-à-dire qu'il est tourné vers les cames 9, 10: le fil 1 sort du bec 30 du fait que le profil des cames 9, 10 déplace le fil 1 vers le haut par rapport au bec 30.Figures 4 show the formation of the mesh during the rotation of the needle 7. During picking (Figure 4A), the beak 30 of the needle 7 carries with it, in its rotation, the wire 1 which is presented to it through the power system. During slaughter (Figure 4B) which takes place after the spindle 6 has rotated 180 ° relative to the culling, the needle nozzle 30 always has the same orientation, that is to say that it is turned towards the cams 9, 10: the wire 1 comes out of the spout 30 because the profile of the cams 9, 10 displaces the wire 1 upwards relative to the spout 30.

Sur le dispositif qui vient d'être décrit ont été réalisés des fils de différentes structures jusqu'à des vitesses de rotation de la broche de 15.000 tr/mn, celle-ci étant munie de une ou deux aiguilles à crochet.On the device which has just been described, wires of different structures have been produced up to spindle rotation speeds of 15,000 rpm, the latter being provided with one or two hook needles.

Les meilleurs résultats ont été réalisés avec des fils ayant une certaine élasticité, notamment des fils texturés, aptes à amortir les à-coups de tension dus au mouvement du fil le long du profil des cames 9, 10.The best results have been achieved with threads having a certain elasticity, in particular textured threads, capable of absorbing the voltage jolts due to the movement of the thread along the profile of the cams 9, 10.

L'invention n'est pas limitée au mode de réalisation préféré qui vient d'être décrit, à titre d'exemple non exhaustif, mais en couvre toutes les variantes. En particulier la combinaison poulies crantées 21, 22, 23 et courroie crantée 23 peut être remplacée par un jeu de trois pignons identiques, les dents du pignon central s'engrenant dans les dents du ou des pignons excentrés.The invention is not limited to the preferred embodiment which has just been described, by way of non-exhaustive example, but covers all variants. In particular, the combination of toothed pulleys 21, 22, 23 and toothed belt 23 can be replaced by a set of three identical pinions, the teeth of the central pinion meshing with the teeth of the eccentric pinion or pinions.

Claims (6)

Dispositif de production de fil (4) par maillage à partir d'au moins un fil (1, 2) élémentaire comprenant, disposés entre la source d'amenée du fil élémentaire et les moyens de renvidage du fil formé (4): a. une broche creuse (6) rotative supportant et entraînant en rotation au moins une aiguille (7) de tricotage; b. des moyens de présentation du fil élémentaire dans le bec (30) de l'aiguille (7) lors de la rotation de ladite broche; c. et un ensemble fixe (9,10) permettant de réaliser l'abattage des mailles formées sur l'aiguille et le guidage du fil formé (4) à l'intérieur du canal interne (13) de la broche creuse (6) caractérisé en ce que, l'aiguille (7) étant une simple aiguille à crochet, il comporte des moyens d'entraînement (21, 22, 23, 28) de l'aiguille (7) en rotation sur elle-même à la même vitesse angulaire et en sens inverse de la rotation de la broche (6). Device for producing wire (4) by mesh from at least one elementary wire (1, 2) comprising, arranged between the source of supply of the elementary wire and the means for winding the formed wire (4): at. a rotary hollow spindle (6) supporting and driving in rotation at least one knitting needle (7); b. means for presenting the elementary thread in the beak (30) of the needle (7) during the rotation of said pin; vs. and a fixed assembly (9,10) allowing the knitting of the meshes formed on the needle and the guiding of the formed wire (4) to be carried out inside the internal channel (13) of the hollow spindle (6) characterized in that, the needle (7) being a simple hook needle, it comprises drive means (21, 22, 23, 28) of the needle (7) rotating on itself at the same angular speed and in opposite direction to the rotation of the spindle (6). Dispositif selon la revendication 1 caractérisé en ce que les moyens de rotation de l'aiguille sur elle-même sont entraînés par la rotation de la broche creuse.Device according to claim 1 characterized in that the means for rotating the needle on itself are driven by the rotation of the hollow spindle. Dispositif selon la revendication 2 caractérisé en ce que la broche creuse comporte: - un tube central (13) à l'intérieur duquel passe le fil formé (4), - une première pièce (21) montée fixe sur le tube central (13), - un corps rotatif solidaire axialement du tube par des roulements, - au moins une seconde pièce (22) montée sur roulement à l'intérieur du corps rotatif, de même configuration que la première pièce (21) et excentrée par rapport à celle-ci, - et des moyens d'entraînement (28) de la seconde pièce (22) par la première (21) lors de la rotation du corps autour du tube central (13), l'aiguille étant montée dans l'axe de rotation de la seconde pièce (22). Device according to claim 2 characterized in that the hollow spindle comprises: - a central tube (13) inside which the formed wire (4) passes, - a first part (21) fixedly mounted on the central tube (13), - a rotating body secured axially to the tube by bearings, - at least one second part (22) mounted on a bearing inside the rotary body, of the same configuration as the first part (21) and eccentric with respect thereto, - And drive means (28) of the second part (22) by the first (21) during the rotation of the body around the central tube (13), the needle being mounted in the axis of rotation of the second part (22). Dispositif selon la revendication 3 caractérisé en ce qu'il comporte deux secondes pièces (22, 23), disposées symétriquement par rapport à la première pièce (21).Device according to claim 3 characterized in that it comprises two second parts (22, 23), arranged symmetrically relative to the first part (21). Dispositif selon l'une des revendications 3 ou 4 caractérisé en ce que les pièces (21, 22, 23) sont des poulies crantées et le système d'entraînement de la ou des secondes poulies (22, 23) par la première (21) consiste en une courroie crantée (28).Device according to one of claims 3 or 4 characterized in that the parts (21, 22, 23) are toothed pulleys and the drive system of the second pulley (s) (22, 23) by the first (21) consists of a toothed belt (28). Dispositif selon l'une des revendications 3 ou 4 caractérisé en ce que les pièces sont des pignons, les dents du premier pignon s'engrenant dans les dents du ou des seconds pignons.Device according to one of claims 3 or 4 characterized in that the parts are pinions, the teeth of the first pinion meshing in the teeth of the second pinion (s).
EP90403434A 1989-12-04 1990-12-04 Device for producing yarns by meshing Withdrawn EP0432030A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8916580 1989-12-04
FR8916580A FR2655358B1 (en) 1989-12-04 1989-12-04 IMPROVED MESH WIRE PRODUCTION DEVICE.

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EP0432030A1 true EP0432030A1 (en) 1991-06-12

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EP90403434A Withdrawn EP0432030A1 (en) 1989-12-04 1990-12-04 Device for producing yarns by meshing

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EP (1) EP0432030A1 (en)
FR (1) FR2655358B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111118676A (en) * 2020-01-17 2020-05-08 山东宏业纺织股份有限公司 Gear type selection method of spinning frame and spinning frame
CN112522828A (en) * 2020-12-29 2021-03-19 山东玉马遮阳科技股份有限公司 Forming equipment and forming method for high-polymer monofilament coated slub yarn

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160610A1 (en) * 1984-04-24 1985-11-06 MOULINAGES Henri LACROIX Société Anonyme Device for manufacturing a fancy yarn

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160610A1 (en) * 1984-04-24 1985-11-06 MOULINAGES Henri LACROIX Société Anonyme Device for manufacturing a fancy yarn

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111118676A (en) * 2020-01-17 2020-05-08 山东宏业纺织股份有限公司 Gear type selection method of spinning frame and spinning frame
CN112522828A (en) * 2020-12-29 2021-03-19 山东玉马遮阳科技股份有限公司 Forming equipment and forming method for high-polymer monofilament coated slub yarn

Also Published As

Publication number Publication date
FR2655358B1 (en) 1992-04-10
FR2655358A1 (en) 1991-06-07

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