EP0126659B1 - Method and device for manufacturing a double yarn - Google Patents

Method and device for manufacturing a double yarn Download PDF

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Publication number
EP0126659B1
EP0126659B1 EP84400738A EP84400738A EP0126659B1 EP 0126659 B1 EP0126659 B1 EP 0126659B1 EP 84400738 A EP84400738 A EP 84400738A EP 84400738 A EP84400738 A EP 84400738A EP 0126659 B1 EP0126659 B1 EP 0126659B1
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EP
European Patent Office
Prior art keywords
strands
filament
upstream
stretching rollers
twisting
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.)
Expired
Application number
EP84400738A
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German (de)
French (fr)
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EP0126659A1 (en
Inventor
Michel Eugène Albert Vanhelle
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Spindelfabrik Sussen Schurr Stahlecker and Grill GmbH
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Sarl Baulip Fil
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Publication date
Application filed by Sarl Baulip Fil filed Critical Sarl Baulip Fil
Priority to AT84400738T priority Critical patent/ATE35430T1/en
Publication of EP0126659A1 publication Critical patent/EP0126659A1/en
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Publication of EP0126659B1 publication Critical patent/EP0126659B1/en
Expired legal-status Critical Current

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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
    • D02G3/36—Cored or coated yarns or threads
    • D02G3/367—Cored or coated yarns or threads using a drawing frame

Definitions

  • the present invention relates to a method and a device for spinning fiber yarns.
  • Document EP-0 038 143 describes a process for spinning fiber yarns.
  • a first variant (FIGS. 7, 8, 9)
  • the two locks are first trained then they are subjected to a false twist and finally they are twisted together.
  • a second variant (Fig. 10)
  • the two locks are first trained, then a continuous filament 25 is added to each lock 25, then the two locks are subjected to a false twist and finally they are twisted one with the other.
  • the continuous filaments remain after twisting.
  • Document EP-0 038 143 does not mention the existence of a possible resistance problem during launch. The piecing therefore does not differ from normal spinning. As a result, no additional technical measures are planned to take account of the increase in tensions during the piecing.
  • the object of the present invention is to enable fiber yarns to be obtained with an extremely high production speed, obtained by consolidating the resistance of the fiber yarn, preferably when it has to withstand forces.
  • This object is achieved by a process of spinning a yarn of fibers according to which one stretches at least two wicks of fibers between the points of supply of this wick and pairs of stretching cylinders; a continuous filament is introduced into each wick upstream of the pairs of stretching cylinders; the strands formed by each strand of fibers and each filament are twisted by a torsion member in particular with friction and, in this way, sufficient cohesion is given to the strands; thus formed at a determined point; the strands are brought together at the same point of convergence; the tension of the strands is adjusted and the strands are wound; the yarn formed from the strands is twisted on a twisting loom, after winding, characterized in that each filament is cut upstream of the stretching cylinders and the cut filaments are eliminated.
  • the thread is given at a precise determined point, sufficient cohesion to allow twisting.
  • the cohesion is given to the wire between the point of twisting and between the point of unwinding of the wire.
  • the continuous filament or filaments are cut before winding, upstream of the stretching cylinders. This constitutes a method of launching manufacturing.
  • At least two strands of fibers are stretched separately between supply points and pairs of stretching cylinders, the continuous wires are fed, they are introduced into said strands upstream of the different stretching cylinders and the strands are made to converge. formed at the same point of a torsion member.
  • the strands formed are passed through a pair of delivery cylinders, and the continuous filaments are cut, upstream of the stretching cylinders, before the remaining assembly is wound.
  • the assembly formed by the fibers is then put on a twisting loom.
  • the wound wire is formed of at least two strands placed side by side having a low residual twist, possibly alternating, very low, sufficient to ensure cohesion of the fibers and insufficient to cause the assembly of the two strands by self-twisting so regular and constant.
  • the yarn after twisting is such that the fibers are all substantially parallel to each other in the axis of each strand with a variation equal to the very small residual twist existing in the yarn before twisting, but such that we know how to dissociate the two strands per twist.
  • a spinning process is carried out by stretching a wick of fibers 5a between a supply point 2a and a pair of stretching cylinders 4a.
  • the drawing system further comprises a pair of drawing sleeves 3a.
  • a strand of fibers 5b is stretched separately by a drawing system comprising a feed point, namely a pair of food rolls 2b, a pair of drawing sleeves 3b and a pair of drawing rolls 4b.
  • a continuous filament 6a, 6b is introduced upstream of the stretching cylinders 4a, 4b.
  • Two strands are therefore formed, each consisting of a wick of fibers and a filament.
  • the strands thus formed are twisted together by a wringer 7 and are guided by two guides 8 and 9.
  • the two strands then pass through a pair of cylinders 10 before being aspirated by a vacuum cleaner 13 before eliminating the continuous filaments, for example by cutting, by means of a pair of manual scissors, upstream of the stretching cylinders.
  • the continuous filaments thus cut are therefore brought by the vacuum cleaner 13 to the waste.
  • FIG. 2 shows the spinning device after cutting the filaments when the fiber yarn is wound on a cylinder 11. It is important to have a sufficient number of fibers or section, in relation to the cohesion of the fibers, the cleanliness of the wick and the tension between the stretchers 4 and the delivery cylinders 10. With regard to the cohesion between the fibers, it may be advantageous to add to the fibers, when preparing the wicks, a size increasing this cohesion between the fibers . For example, a paraffinic sizing agent or a sizing agent containing colloidal silica. This also has the effect of facilitating twisting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

1. A spinning process of a fibre yarn in which at least two roves of fibre are stretched between the drafting points of the said roves and pairs of stretching rollers ; a continuous filament is introduced into each rove upstream of the pairs of stretching rollers ; the strands formed by each rove of fibres and each filament are twisted by twisting means, in particular by rubbing (7), and in this way, sufficient cohesion is given to the strands formed at a particular point ; and the stands are gathered into a converging point (12) ; the tension of the strands is adjusted ; the strands are wound ; the yarn formed by the strands is retwisted on a twisting frame after winding, characterized by the fact that each filament is cut upstream of the stretching rollers and each filament cut is eliminated.

Description

La présente invention a pour objet un procédé et un dispositif pour le filage des filés de fibres.The present invention relates to a method and a device for spinning fiber yarns.

Le document EP-0 038 143 décrit un procédé pour le filage des filés de fibres. Dans une première variante (figures 7, 8, 9), on entraine d'abord les deux mèches puis on les soumet à une fausse-torsion et enfin on les retord l'une avec l'autre. Dans une seconde variante (Fig. 10), on entraine d'abord les deux mèches, puis on ajoute, à chaque mèche un filament continu 25, puis on soumet les deux mèches à une fausse torsion et enfin on les retord l'une avec l'autre. Dans cette seconde variante, les filaments continus subsistent après retordage. Le documentt EP-0 038 143 ne mentionne pas l'existence d'un éventuel problème de résistance lors du lancement. La rattache ne diffère donc pas du filage normal. Il en résulte qu'il n'est prévu aucune mesure technique additionnelle pour tenir compte de l'acroissement des tensions lors de la rattache.Document EP-0 038 143 describes a process for spinning fiber yarns. In a first variant (FIGS. 7, 8, 9), the two locks are first trained then they are subjected to a false twist and finally they are twisted together. In a second variant (Fig. 10), the two locks are first trained, then a continuous filament 25 is added to each lock 25, then the two locks are subjected to a false twist and finally they are twisted one with the other. In this second variant, the continuous filaments remain after twisting. Document EP-0 038 143 does not mention the existence of a possible resistance problem during launch. The piecing therefore does not differ from normal spinning. As a result, no additional technical measures are planned to take account of the increase in tensions during the piecing.

La présente invention a pour but de permettre l'obtention de filés de fibres avec une vitesse de production extrêmement élévée, obtenue par la consolidation de la résistance du filé de fibres, de préférence au moment où il a à supporter des efforts.The object of the present invention is to enable fiber yarns to be obtained with an extremely high production speed, obtained by consolidating the resistance of the fiber yarn, preferably when it has to withstand forces.

Ce but est atteint par un procédé de filage d'un filé de fibres selon lequel on étire au moins deux mêches de fibres entre des points d'amenée de cette mèche et des paires de cylindres étireurs; on introduit un filament continu dans chaq e mèche en amont des paires de cylindres étireurs; on tord les brins formés par chaque mèche de fibres et chaque filament par un organe de torsion notamment à friction et, de cette manière, on donne une cohésion suffisante aux brins; ainsi formés en un point déterminé; on rassemble les brins en un même point de convergence; on règle la tension des brins on bobine les brins; on retord le fil formé des brins sur un métier à retordre, après bobinage, caractérisé par le fait que l'on coupe chaque filament en amont des cylindres étireurs et on élimine les filaments coupés.This object is achieved by a process of spinning a yarn of fibers according to which one stretches at least two wicks of fibers between the points of supply of this wick and pairs of stretching cylinders; a continuous filament is introduced into each wick upstream of the pairs of stretching cylinders; the strands formed by each strand of fibers and each filament are twisted by a torsion member in particular with friction and, in this way, sufficient cohesion is given to the strands; thus formed at a determined point; the strands are brought together at the same point of convergence; the tension of the strands is adjusted and the strands are wound; the yarn formed from the strands is twisted on a twisting loom, after winding, characterized in that each filament is cut upstream of the stretching cylinders and the cut filaments are eliminated.

Ce procédé est tel que l'on donne au fil en un point déterminé précis, une cohésion suffisante pour permettre le retordage. Ainsi, on n'a pas de rupture du filé de fibres. Préférentiellement, on donne la cohésion au fil entre le point de prise de torsion et entre le point de dévidage du fil.This process is such that the thread is given at a precise determined point, sufficient cohesion to allow twisting. Thus, there is no break in the fiber yarn. Preferably, the cohesion is given to the wire between the point of twisting and between the point of unwinding of the wire.

On coupe le ou les filaments continus avant d'effectuer le bobinage, en amont des cylindres étireurs. Ceci constitue un mode de lancement de la fabrication.The continuous filament or filaments are cut before winding, upstream of the stretching cylinders. This constitutes a method of launching manufacturing.

Selon l'invention on étire séparément au moins deux mêches de fibres entre des points d'amenée et des paires de cylindres étireurs, on alimente les fils continus, on les introduit dans lesdites mêches en amont des différents cylindres étireurs et on fait converger les brins formés en un même point d'un organe de torsion. On fait passer les brins formés au travers d'une paire de cylindres délivreurs, et on coupe les filaments continus, en amont des cylindres étireurs, avant le bobinage de l'ensemble restant. L'ensemble formé par les fibres est ensuite mis sur un métier à retordre.According to the invention, at least two strands of fibers are stretched separately between supply points and pairs of stretching cylinders, the continuous wires are fed, they are introduced into said strands upstream of the different stretching cylinders and the strands are made to converge. formed at the same point of a torsion member. The strands formed are passed through a pair of delivery cylinders, and the continuous filaments are cut, upstream of the stretching cylinders, before the remaining assembly is wound. The assembly formed by the fibers is then put on a twisting loom.

Un dispositif pour la mise en oeuvre du procédé comprenant:

  • des moyens de réalisation d'au moins deux brins constitués d'au moins une mèche de fibres et d'au moins un filament continu;
  • des moyens de fausse torsion par friction des brins; des moyens de bobinage,
  • des moyens de retordage du fil formé par les brins;
    • est caractérisé par le fait qu'il comporte des moyens de coupe de filaments en amont des cylindres étireurs et des moyens d'élimination des filaments continus placés après les moyens de fausse torsion.
A device for implementing the method comprising:
  • means for producing at least two strands consisting of at least one wick of fibers and at least one continuous filament;
  • means for false twisting by friction of the strands; winding means,
  • means for twisting the wire formed by the strands;
    • is characterized by the fact that it comprises means for cutting filaments upstream of the stretching cylinders and means for eliminating the continuous filaments placed after the false twist means.

Le fil bobiné est formé d'au moins deux brins placés côte à côte présentant une faible torsion résiduelle, éventuellement alternée, très faible, suffisante pour assurer une cohésion des fibres et insuffisante pour provoquer l'assemblage des deux brins par auto-torsion de façon régulière et constante.The wound wire is formed of at least two strands placed side by side having a low residual twist, possibly alternating, very low, sufficient to ensure cohesion of the fibers and insufficient to cause the assembly of the two strands by self-twisting so regular and constant.

Le fil après retordage est tel que les fibres sont toutes sensiblement parallèles les unes aux autres dans l'axe de chaque brin avec une variation égale à la très faible torsion résiduelle existant dans le fil avant retordage, mais telle que l'on sache dissocier les deux brins par détorsion.The yarn after twisting is such that the fibers are all substantially parallel to each other in the axis of each strand with a variation equal to the very small residual twist existing in the yarn before twisting, but such that we know how to dissociate the two strands per twist.

L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce aux exemples de mise en oeuvre, donnés ci-après à titre illustratif, mais non limitatif et qui sont illustrés par les figures annexées dans lesquelles:

  • la figure 1 est une vue schématique, en perspective d'un dispositif de filage avant l'arrêt du filament continu dans le cas où le point de convergence est en amont du tordeur.
  • la figure 2 est une vue schématique en perspective d'un dispositif permettant d'obtenir un fil double avant la montée en torsion et après la coupe du filament, dans le cas où le point de convergence est en aval du tordeur.
The invention and the advantages which it brings will however be better understood thanks to the examples of implementation, given below by way of illustration, but not limitation and which are illustrated by the appended figures in which:
  • Figure 1 is a schematic perspective view of a spinning device before stopping the continuous filament in the case where the point of convergence is upstream of the twister.
  • Figure 2 is a schematic perspective view of a device for obtaining a double wire before the rise in torsion and after cutting the filament, in the case where the point of convergence is downstream of the twister.

Selon l'invention, on effectue un procédé de filage en étirant une mèche de fibres 5a entre un point d'amenée 2a et une paire de cylindres étireurs 4a. Le système d'étirage comporte en outre une paire de manchons d'étirage 3a. Parallèlement, on étire séparément une mèche de fibres 5b par un système d'étirage comportant un point d'amenée, à savoir une paire de cylindres alimentaires 2b, une paire de manchons d'étirage 3b et une paire de cylindres étireurs 4b.According to the invention, a spinning process is carried out by stretching a wick of fibers 5a between a supply point 2a and a pair of stretching cylinders 4a. The drawing system further comprises a pair of drawing sleeves 3a. In parallel, a strand of fibers 5b is stretched separately by a drawing system comprising a feed point, namely a pair of food rolls 2b, a pair of drawing sleeves 3b and a pair of drawing rolls 4b.

En amont des cylindres étireurs 4a, 4b, on introduit un filament continu 6a, 6b. On forme donc deux brins constitués chacun d'une mèche de fibres et d'un filament. Les brins ainsi formés sont tordus ensemble par un tordeur 7 et sont guidés par deux guides 8 et 9. Les deux brins passent ensuite par une paire de cylindres 10 avant d'être aspirés par un aspirateur 13 avant d'éliminer les filaments continus par exemple par coupage, au moyen d'une paire de ciseaux manuels, en amont des cylindres étireurs.Upstream of the stretching cylinders 4a, 4b, a continuous filament 6a, 6b is introduced. Two strands are therefore formed, each consisting of a wick of fibers and a filament. The strands thus formed are twisted together by a wringer 7 and are guided by two guides 8 and 9. The two strands then pass through a pair of cylinders 10 before being aspirated by a vacuum cleaner 13 before eliminating the continuous filaments, for example by cutting, by means of a pair of manual scissors, upstream of the stretching cylinders.

Les filaments continus ainsi coupés sont donc amenés par l'aspirateur 13 aux déchets.The continuous filaments thus cut are therefore brought by the vacuum cleaner 13 to the waste.

La figure 2 représente le dispositif de filage après la coupe des filaments quand le filé de fibres est bobiné sur un cylindre 11. Il est important d'avoir un nombre de fibres or section suffisant, en relation avec la cohésion des fibres, la propreté de la mèche et la tension entre les étireurs 4 et les cylindres délivreurs 10. A propos de la cohésion entre les fibres, il peut être intéressant d'adjoindre aux fibres, au moment de la préparation des mêches, un ensimage augmentant cette cohésion entre les fibres. Par exemple, un ensimage paraffinique ou un ensimage contenant de la silice colloidale. Cela ayant aussi pour effet de faciliter le retordage.FIG. 2 shows the spinning device after cutting the filaments when the fiber yarn is wound on a cylinder 11. It is important to have a sufficient number of fibers or section, in relation to the cohesion of the fibers, the cleanliness of the wick and the tension between the stretchers 4 and the delivery cylinders 10. With regard to the cohesion between the fibers, it may be advantageous to add to the fibers, when preparing the wicks, a size increasing this cohesion between the fibers . For example, a paraffinic sizing agent or a sizing agent containing colloidal silica. This also has the effect of facilitating twisting.

Dans le cas où le point de convergence est en amont de l'organe de torsion il est aussi important de régler la tension entre les étireurs 4 et les cylindres délivreurs 10, de façon à avoir une distance h convenable entre les étireurs 4 et le point de convergence 12 des fils, en relation avec la torsion donnée et la vitesse de défilement. En effet, une torsion existe dans chacun des brins simples, entre le point de convergence 12 des brins et le point où le brin est saisi en dernier lieu par les étireurs 4, mais cette torsion n'est pas incorporée dans le fil résultant. Cette torsion existe dans les brins préalablement à la convergence en une quantité d'équilibre qui dépend de la géométrie du système et des paramètres de filage. Cet état de fait décrit ci- dessus peut être en pratique modifié. En effet, les irrégularités survenant au hasard dans les brins, une partie de la torsion est incorporée dans des brins de manière variant au hasard. Une telle torsion est toutefois de faible intensité.In the case where the point of convergence is upstream of the torsion member, it is also important to adjust the tension between the stretchers 4 and the delivery cylinders 10, so as to have a suitable distance h between the stretchers 4 and the point of convergence 12 of the wires, in relation to the given twist and the running speed. Indeed, a twist exists in each of the single strands, between the point of convergence 12 of the strands and the point where the strand is lastly gripped by the stretchers 4, but this twist is not incorporated in the resulting wire. This twist exists in the strands prior to convergence in an amount of equilibrium which depends on the geometry of the system and the spinning parameters. This state of affairs described above can in practice be modified. Indeed, irregularities occurring randomly in the strands, part of the twist is incorporated into strands in a randomly varying manner. Such a twist is however of low intensity.

Si la tension est trop faible, trop peu de torsion se trouve dans le brin entre les cylindres étireurs 4 et le point de convergence 12, ce qui se traduit par des pertes de fibres à la sortie des cylindres étireurs 4, suite à un mauvais accrochage des fibres. Par exemple, on a obtenu d'excellents résultats à la vitesse de 215 mètres par minute avec un étirage, entre les étireurs 4 et les délivreurs 10, égal à 1,53 % et un fil 2x25 tex composé de 45 % de laine de 27 microns et de 55 % de polyester de 3 deniers. Ainsi, on règle la différence de vitesse entre les cylindres étireurs 4 et les cylindres délivreurs 10 en fonction des paramètres de filage et de la vitesse de déplacement. Si la tension est par contre trop forte, le fil est trop tendu, ce qui entraîne un risque de casse.If the tension is too low, too little torsion is found in the strand between the stretching cylinders 4 and the point of convergence 12, which results in fiber losses at the outlet of the stretching cylinders 4, following poor attachment. fibers. For example, excellent results have been obtained at a speed of 215 meters per minute with a stretch, between the stretchers 4 and the deliverers 10, equal to 1.53% and a 2x25 tex thread composed of 45% wool of 27 microns and 55% 3 denier polyester. Thus, the difference in speed between the stretching cylinders 4 and the delivery cylinders 10 is adjusted as a function of the spinning parameters and the speed of movement. If the tension is too high, the thread is too tight, which leads to a risk of breakage.

Dans le cas où l'on utilise des organes de torsion à friction assurant à la fois une composante de torsion et une composante d'avancée du fil il peut être intéressant de régler la tension du fil par variation de cette composante d'avancée, indépendamment du réglage de tension entre les cylindres délivreurs et étireurs. Par exemple, lorsque l'on utilise deux courroies croisées sans fin ce réglage se fait par variation de l'angle des deux courroies.In the case where friction torsion members are used which provide both a torsion component and a thread advancement component, it may be advantageous to adjust the tension of the thread by varying this advancement component, independently. the tension adjustment between the delivery and stretching cylinders. For example, when using two endless crossed belts this adjustment is made by varying the angle of the two belts.

Claims (2)

1) A spinning process of a fibre yarn in which at least two roves of fibre are stretched between the drafting points of the said roves and pairs of stretching rollers; a continuous filament is introduced into each rove upstream of the pairs of stretching rollers; the strands formed by each rove of fibres and each filament are twisted by twisting means, in particular by rubbing (7), and in this way, sufficient cohesion is given to the strands formed at a particular point; and the strands are gathered into a converging point (12); the tension of the strands is adjusted; the strands are wound; the yarn formed by the strands is re- twisted on a twisting frame after winding, characterised by the fact that each filament is cut upstream of the stretching rollers and each filament cut is eliminated.
2) A device for putting the process in accordance with claim 1 into practice, comprising:
means of producing at least two strands comprising at least one rove of fibres (5a) and at least one continuous filament (6a);
false twisting means (7) by rubbing the strands;
winding means (11);
re-twisting means for the yarn formed by the strands;
characterised by the fact that it comprises means of cutting the filaments upstream of the stretching rollers and means (13) of eliminating the continuous filaments placed after the false twisting means (7).
EP84400738A 1983-04-14 1984-04-12 Method and device for manufacturing a double yarn Expired EP0126659B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400738T ATE35430T1 (en) 1983-04-14 1984-04-12 METHOD AND DEVICE FOR MAKING A TWINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8306125A FR2544346B1 (en) 1983-04-14 1983-04-14 METHOD AND DEVICE FOR SPINNING FIBER YARNS, INCLUDING AT LEAST ONE CORE
FR8306125 1983-04-14

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP86113383.3 Division-Into 1984-04-12

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EP0126659A1 EP0126659A1 (en) 1984-11-28
EP0126659B1 true EP0126659B1 (en) 1988-06-29

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EP84400738A Expired EP0126659B1 (en) 1983-04-14 1984-04-12 Method and device for manufacturing a double yarn
EP86113383A Expired - Lifetime EP0217345B1 (en) 1983-04-14 1984-04-12 Method and apparatus for spinning staple fibre yarns

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US (2) US4903472A (en)
EP (2) EP0126659B1 (en)
JP (1) JPS6028528A (en)
AT (2) ATE54344T1 (en)
DE (2) DE3482659D1 (en)
FR (1) FR2544346B1 (en)

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Also Published As

Publication number Publication date
JPS6028528A (en) 1985-02-13
ATE35430T1 (en) 1988-07-15
US4903472A (en) 1990-02-27
FR2544346A1 (en) 1984-10-19
US5115630A (en) 1992-05-26
ATE54344T1 (en) 1990-07-15
EP0217345B1 (en) 1990-07-04
EP0217345A3 (en) 1988-01-27
DE3482659D1 (en) 1990-08-09
EP0126659A1 (en) 1984-11-28
EP0217345A2 (en) 1987-04-08
FR2544346B1 (en) 1987-09-04
DE3472423D1 (en) 1988-08-04

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