EP1646740B1 - Machine for yarn cabling/twisting and continuous setting - Google Patents

Machine for yarn cabling/twisting and continuous setting Download PDF

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Publication number
EP1646740B1
EP1646740B1 EP04767882A EP04767882A EP1646740B1 EP 1646740 B1 EP1646740 B1 EP 1646740B1 EP 04767882 A EP04767882 A EP 04767882A EP 04767882 A EP04767882 A EP 04767882A EP 1646740 B1 EP1646740 B1 EP 1646740B1
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EP
European Patent Office
Prior art keywords
yarn
machine according
zone
twisting
wire
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EP04767882A
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German (de)
French (fr)
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EP1646740A2 (en
Inventor
Bernard Puaux
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RITM
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RITM
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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
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads
    • D02G3/285—Doubled, plied, or cabled threads one yarn running over the feeding spool of another yarn
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/28—Heating or cooling arrangements for yarns
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/86—Multiple-twist arrangements, e.g. two-for-one twisting devices ; Threading of yarn; Devices in hollow spindles for imparting false twist

Definitions

  • the invention relates to the technical sector of fastening, cabling or twisting, and crimp son in the field of textile.
  • the invention relates to the treatment of textured yarns, that is to say having an initial crimp resulting from processes upstream.
  • thermofixation means constituting a heating rotary bucket which has a longitudinal profile defining three successive zones.
  • the double problem that the invention proposes to solve is, on the one hand, to ensure the continuous attachment of a single wire at a time, to have a thread of passage very short, with few contact points, to obtain a better regularity of the twisting of the wire and, secondly, to control the removal of the wire to give it very good crimp characteristics in particular, allowing it to to find the maximum of its initial curl. Indeed, it is known that the return of the initial crimp is accompanied by a significant withdrawal that must be controlled.
  • the wiring or twisting, heat-setting and winding means are mounted in combination with call organs wire and arrangements of the frame of said machine, so as to define a small and compact space incorporating wire feeding means, along a path of the wire of reduced length.
  • Another problem to be solved by the invention is to keep the wire in contact with the bucket for a certain time, to achieve the fixing of the wire.
  • the heating bucket is subject to means capable of allowing automatic hauling of the wire.
  • Another problem to be solved by the invention is to ensure complete cooling and relaxation of the wire after heat setting to create a buffer zone between the heat-setting and the winding, to continue heat-fixing continuously during the change of receiving coil .
  • the accumulator is constituted by a hollow rectilinear body disposed substantially vertically and whose end, considered on the output side, is frustoconical to create, inside said body, a buffer zone braking the exit said wire avoiding him to go out directly.
  • the wire is subjected to the action of bars able to ensure a twisting of the wire by giving it the voltage required for winding.
  • the accumulator is constituted by a relaxation mat where the wire forms a reserve, said mat being disposed between the heating bucket and the winding means, the winding speed being adjusted so that the amount of yarn accumulated in reserve is maintained between two predetermined minimum and maximum values.
  • the wire is deposited in the accumulator under the effect of a relative movement between a guide element and the accumulator itself. The relative movement is created by a displacement of the wire guide member or by a displacement of the accumulator itself.
  • the machine comprises a frame (B) with, preferably, a plurality of identical processing stations.
  • each processing station integrates, in combination and successively, in the same working position, wiring or twisting means (1) of a wire, heat-setting (2) and cooling means (3). ) of the wire, and winding or winding means (4) of the wire (5).
  • the wiring or twisting means (1), thermofixation (2) and cooling (3), winding means or winding (4) of the wire (5) are mounted in combination with arrangements of the frame (B) of the machine, so as to delimit a small and compact space integrating the wire feeding means (6), along a path of reduced length ( figure 1 ).
  • the wiring or twisting means of the wire are constituted, in a manner perfectly known to a person skilled in the art, by a wiring or twisting spindle making it possible to carry out either a direct wiring operation or a twisting.
  • the spindle driven by any known and appropriate means receives a spool of a first thread to be treated called "pot thread".
  • the spindle has a hollow shaft for the supply of a second wire called “creel wire" from the unwinding reel (6).
  • the creel wire is fed through the hollow shaft of the spindle to be joined to the pot wire, at a wiring head (7).
  • This wiring head can be combined with a means of call allowing to cancel the tension resulting from wiring or twisting.
  • This means of appeal can be composed of a set of capstan type and pressure cylinder.
  • Such provisions are not described in detail because they are well known to those skilled in the art. For example, reference is made to the teaching of the patent cited US 5,950,412 .
  • thermofixation means of the wire consist of a heated rotating cup (2) followed by an accumulator (3) able to cool and relax the wire, being completely free and without tension.
  • the bucket (2) is brought to a predetermined temperature and is positively rotated by any known and appropriate means.
  • the heating means may, for example, be of the induction type.
  • the bucket (2) has arrangements capable of controlling the withdrawal of the wire.
  • the bucket has a shaped longitudinal profile to define successive and continuous zones extending over almost its entire length. These zones consist of a recovery zone (2a), a residual withdrawal zone (2b) and a fixation zone (2c).
  • the two zones (2a) and (2b) are constituted by conical bearing surfaces, while the fixing zone (2c) is constituted by a cylindrical bearing surface.
  • the conical bearing surfaces (2a) and (2b) have a different angulation.
  • the residual withdrawal zone (2b) has an angular conicity ⁇ smaller than the ⁇ conicity of the initial crimp recovery zone (2a).
  • the residual withdrawal zone (2b) has a length greater than that of the recovery zone (2a).
  • length of the attachment zone (2c) is greater than the sum of the lengths of the other two zones (2a) and (2b). In the example illustrated, it therefore appears that the three zones (2a), (2b) and (2c) are derived from a succession of ranges of different length and conicity.
  • the bucket (2) may have a curved longitudinal profile.
  • the contact of the wire on the heating bucket creates an impact effect allowing the wire to regain its initial crimp.
  • the return of the curl is accompanied by a significant shrinkage that must be controlled.
  • This control is obtained by the conicity ⁇ of the conical bearing (2a).
  • the residual withdrawal zone (2b) allows the wire to finish its removal in a smooth and regular manner since the conicity ⁇ is smaller than the conical bearing (2b) longer than the conical bearing (2a).
  • the wire is fixed under the conditions to which it has been subjected in the two preceding zones. Given the importance of the length of the cylindrical bearing surface (2c), the fixing of the wire is carried out smoothly.
  • the wire retains its original voltage but is subject to a withdrawal.
  • the thread tends to turn on itself as the torsion increases.
  • all parts of the wire are in contact with the bucket, which ensures a completely round shape to the wire.
  • the conical profile and the textile adjustment force the thread to a calculated shrinkage.
  • the wire is subjected to the action of an accumulator (3) able to ensure the complete cooling and relaxation of the wire after heat setting and to create a buffer zone between the thermofixation and winding to continue thermofixation continuously during the change of the receiving coil (4).
  • the accumulator (3) is constituted by a hollow rectilinear body, for example, of quadrangular cross section.
  • the end of the body of the accumulator (3), considered on the output side, is frustoconical and gradually degressive section towards said free end to create, inside the body, a buffer zone braking the exit of the wire by avoiding him going out directly.
  • this accumulator (3) at the outlet of the heating bucket, is disposed at the level of the treatment station in a substantially vertical plane, the wire entering through the end (3b) to exit, by simple gravity, at the level the frustoconical portion (3a).
  • the accumulator (3) has a series of parallel bars (8) mounted on a support member (9) integral for example with the end of the accumulator (3).
  • the bars (8) are arranged substantially perpendicular to the longitudinal axis of the accumulator (3), that is to say perpendicularly to the path of the wire, to perform a function of unscrewing said wire giving it the voltage required to winding.
  • the accumulator (3) may be constituted by a relaxation mat where the wire forms a reserve.
  • the belt is disposed between the heating cup (2) and the winding means (4).
  • the winding speed is set so that the amount of yarn accumulated in reserve is maintained between two predetermined minimum and maximum values.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Wire Processing (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

The machine consists of one or more posts that combine in succession twisting (1), thermofixing (2), cooling (3) and winding (4) systems for the yarn. The different systems are connected to drives and guides set in a frame equipped with yarn feeds (6) and occupying a reduced space.

Description

L'invention se rattache au secteur technique de la fixation, du câblage ou du retordage, et de la frisure des fils dans le domaine du textile.The invention relates to the technical sector of fastening, cabling or twisting, and crimp son in the field of textile.

Plus particulièrement, l'invention concerne le traitement de fils texturés, c'est-à-dire présentant une frisure initiale issue des processus en amont.More particularly, the invention relates to the treatment of textured yarns, that is to say having an initial crimp resulting from processes upstream.

De nombreuses solutions techniques ont été proposées pour réaliser l'opération de câblage et de fixation de fils continus. On peut citer, à titre indicatif nullement limitatif, l'enseignement du brevet US 5,950,412 qui concerne une machine comportant un bâti central supportant une pluralité de positions de travail identiques comprenant chacune :

  • une broche de retordage ou de câblage direct supportant un enroulement de fil destiné à être tordu ou câblé avec un second fil ;
  • des moyens d'appel du fil permettant d'annuler la tension qui résulte de l'opération de retordage ou de câblage ;
  • des moyens de chauffage du fil suivis d'une zone de refroidissement et ;
  • des moyens de renvidage du fil traité,
  • les moyens de chauffage sont constitués par un four rectiligne disposé verticalement ou sensiblement verticalement ;
  • le fil effectue un aller-retour à l'intérieur dudit four et est introduit et extrait de ce dernier par sa partie basse, un système d'appel et de renvoi pour ledit fil étant prévu en partie supérieure ;
  • des moyens sont prévus pour maintenir le fil sous une tension minimale pendant la phase de refroidissement et pour le délivrer aux moyens de renvidage.
Many technical solutions have been proposed to perform the operation of wiring and fixing continuous son. As a non-limitative indication, the teaching of the patent US 5,950,412 a machine having a central frame supporting a plurality of identical working positions each comprising:
  • a twisting or direct wiring spindle supporting a winding of wire to be twisted or wired with a second wire;
  • yarn calling means for canceling the tension resulting from the twisting or cabling operation;
  • wire heating means followed by a cooling zone and;
  • means for winding the treated yarn,
  • the heating means consist of a rectilinear furnace arranged vertically or substantially vertically;
  • the wire goes back and forth inside said furnace and is introduced and extracted from the latter by its lower part, a call and return system for said wire being provided in the upper part;
  • means are provided for maintaining the wire under a minimum voltage during the cooling phase and for delivering it to the winding means.

On a également proposé des solutions dans lesquelles le four, qui est de dimensions importantes, est supprimé pour être remplacé par un godet cylindrique associé à un guide de renvoi pour permettre un mouflage du fil. Le godet est porté à une température déterminée, et entraîné positivement en rotation. Cette solution ressort par exemple de l'enseignement du brevet WO 03/064741 (brevet selon article 54(3) CBE).Solutions have also been proposed in which the oven, which is large in size, is removed to be replaced by a cylindrical cup associated with a return guide to allow hauling of the wire. The bucket is brought to a determined temperature, and positively rotated. This solution emerges, for example, from the teaching of the patent WO 03/064741 (patent under Article 54 (3) EPC).

Le document DE-A-21 44 544 décrit des moyens de thermofixation constituant un godet rotatif chauffant qui présente un profil longitudinal délimitant trois zones successives.The document DE-A-21 44 544 describes thermofixation means constituting a heating rotary bucket which has a longitudinal profile defining three successive zones.

A partir de cet état de la technique, le double problème que se propose de résoudre l'invention est, d'une part, d'assurer la fixation à la continue d'un seul fil à la fois, pour avoir un fil de passage très court, avec peu de points de contact, afin d'obtenir une meilleure régularité de la torsion du fil et, d'autre part, de contrôler le retrait du fil pour lui donner de très bonnes caractéristiques de frisure notamment, en lui permettant de retrouver le maximum de sa frisure initiale. En effet, il est connu que le retour de la frisure initiale s'accompagne d'un retrait important qui doit être contrôlé.From this state of the art, the double problem that the invention proposes to solve is, on the one hand, to ensure the continuous attachment of a single wire at a time, to have a thread of passage very short, with few contact points, to obtain a better regularity of the twisting of the wire and, secondly, to control the removal of the wire to give it very good crimp characteristics in particular, allowing it to to find the maximum of its initial curl. Indeed, it is known that the return of the initial crimp is accompanied by a significant withdrawal that must be controlled.

Pour résoudre ce double problème, il a été conçu et mis au point une machine pour le câblage ou le retordage, et la fixation en continu de fils, comprenant plusieurs postes de traitement intégrant, en combinaison et successivement, selon une même position de travail :

  • des moyens de câblage ou de retordage d'un fil,
  • des moyens de thermofixation constitués par un godet rotatif chauffant qui présente des agencements aptes à permettre de contrôler le retrait du fil, lesdits agencements étant constitués par un profil longitudinal délimitant des zones successives s'étendant sur la quasi-totalité de la longueur dudit godet, à savoir une zone de reprise de la frisure initiale, une zone de retrait résiduel et une zone de fixation,
  • Les zones de reprise de la frisure initiale et de retrait résiduel sont constituées par des portées coniques, tandis que la zone de fixation est constituée par une portée cylindrique,
  • un accumulateur apte à refroidir et relaxer le fil à l'état complètement libre, sans tension,
  • des moyens de bobinage ou renvidage du fil,
lesdits moyens étant assujettis à des organes d'entraînement et de guidage du fil.To solve this double problem, it has been designed and developed a machine for wiring or twisting, and the continuous fixing son, comprising several processing stations integrating, in combination and successively, in the same working position:
  • means for cabling or twisting a wire,
  • thermofixing means consisting of a heated rotary cup which has arrangements suitable for controlling the withdrawal of the wire, said arrangements being constituted by a longitudinal profile delimiting successive zones extending over almost the entire length of said bucket, i.e. an initial crimp recovery zone, a residual shrink zone and a fastening zone,
  • The zones of recovery of the initial crimping and residual shrinkage are constituted by conical bearing surfaces, whereas the fixing zone is constituted by a cylindrical bearing surface,
  • an accumulator capable of cooling and relaxing the wire in the completely free state, without tension,
  • means for winding or winding the wire,
said means being subject to wire drive and guide means.

Le fait de combiner les trois opérations de câblage ou de retordage, de thermofixation et de bobinage, permet de limiter, d'une manière importante, la gestion de matière en encours entre ces trois opérations. Il en résulte des gains importants au niveau de la main d'oeuvre nécessaire à la gestion des stocks en cours et de l'immobilisation de matière ainsi qu'une diminution du cycle de production.The fact of combining the three operations of cabling or twisting, thermofixation and winding, makes it possible to limit, in a significant way, the management of material in outstanding amounts between these three operations. This results in significant gains in the labor required to manage inventory in progress and the immobilization of material and a decrease in the production cycle.

Pour résoudre le problème posé d'avoir un parcours de fil le plus court possible, au niveau du ou de chaque poste de traitement, les moyens de câblage ou de retordage, de thermofixation et de bobinage sont montés en combinaison avec des organes d'appel du fil et des agencements du bâti de ladite machine, de manière à délimiter un espace réduit et compact intégrant des moyens de dévidage du fil, selon un trajet du fil de longueur réduite.To solve the problem of having a shortest possible wire path, at the or each processing station, the wiring or twisting, heat-setting and winding means are mounted in combination with call organs wire and arrangements of the frame of said machine, so as to define a small and compact space incorporating wire feeding means, along a path of the wire of reduced length.

Pour résoudre le problème posé de pouvoir contrôler le retrait du fil :

  • les deux portées coniques ont des valeurs angulaires de conicité différentes, la zone de retrait résiduel présentant une valeur angulaire inférieure à celle de la zone de reprise de la frisure initiale ;
  • avantageusement, la longueur de la zone de fixation est supérieure à la somme des longueurs des deux autres zones.
To solve the problem of being able to control the withdrawal of the wire:
  • the two conical bearing surfaces have different angular values of conicity, the residual withdrawal zone having a lower angular value than that of the initial crimp recovery zone;
  • advantageously, the length of the attachment zone is greater than the sum of the lengths of the other two zones.

Un autre problème que se propose de résoudre l'invention est de maintenir le fil en contact avec le godet pendant un certain temps, pour réaliser la fixation du fil. Dans ce but, le godet chauffant est assujetti à des moyens aptes à permettre un mouflage automatique du fil.Another problem to be solved by the invention is to keep the wire in contact with the bucket for a certain time, to achieve the fixing of the wire. For this purpose, the heating bucket is subject to means capable of allowing automatic hauling of the wire.

Un autre problème que se propose de résoudre l'invention est d'assurer le refroidissement complet et la relaxation du fil après thermofixation pour créer une zone tampon entre la thermofixation et le bobinage, pour continuer la thermofixation en continu lors du changement de bobine de réception.Another problem to be solved by the invention is to ensure complete cooling and relaxation of the wire after heat setting to create a buffer zone between the heat-setting and the winding, to continue heat-fixing continuously during the change of receiving coil .

Pour résoudre un tel problème, l'accumulateur est constitué par un corps rectiligne creux disposé sensiblement verticalement et dont l'extrémité, considérée du côté de la sortie, est tronconique pour créer, à l'intérieur dudit corps, une zone tampon freinant la sortie dudit fil en lui évitant de sortir directement.
A la sortie de l'accumulateur, le fil est soumis à l'action de barres aptes à assurer un dévrillage du fil en lui donnant la tension nécessaire au bobinage.To solve such a problem, the accumulator is constituted by a hollow rectilinear body disposed substantially vertically and whose end, considered on the output side, is frustoconical to create, inside said body, a buffer zone braking the exit said wire avoiding him to go out directly.
At the output of the accumulator, the wire is subjected to the action of bars able to ensure a twisting of the wire by giving it the voltage required for winding.

Dans une autre forme de réalisation, l'accumulateur est constitué par un tapis de relaxation où le fil forme une réserve, ledit tapis étant disposé entre le godet chauffant et les moyens de renvidage, la vitesse de renvidage étant réglée pour que la quantité de fil accumulée en réserve soit maintenue entre deux valeurs minimale et maximale prédéterminées.
Le fil est déposé dans l'accumulateur sous l'effet d'un mouvement relatif entre un élément de guidage et l'accumulateur lui-même.
Le mouvement relatif est créé par un déplacement de l'élément de guidage du fil ou par un déplacement de l'accumulateur lui-même.In another embodiment, the accumulator is constituted by a relaxation mat where the wire forms a reserve, said mat being disposed between the heating bucket and the winding means, the winding speed being adjusted so that the amount of yarn accumulated in reserve is maintained between two predetermined minimum and maximum values.
The wire is deposited in the accumulator under the effect of a relative movement between a guide element and the accumulator itself.
The relative movement is created by a displacement of the wire guide member or by a displacement of the accumulator itself.

Dans une forme de réalisation préférée de l'invention, chaque poste de traitement comprend successivement à partir d'une bobine de dévidage :

  • une broche de câblage ou de retordage du fil comme moyens de câblage ou de retordage
  • un organe délivreur presseur assurant une limitation de la tension du fil et fixant un niveau de torsion en aval ;
  • le godet rotatif chauffant ;
  • l'accumulateur apte à refroidir et relaxer équipé des barres de dévrillage; et
  • les moyens de bobinage ou renvidage.
In a preferred embodiment of the invention, each treatment station comprises successively from a reeling reel:
  • wire pin or twisting wire as a means of wiring or twisting
  • a pressure delivering member providing a limitation of the tension of the thread and fixing a downstream level of torsion;
  • the heated rotary bucket;
  • the accumulator able to cool and relax equipped with the unscrewing bars; and
  • winding or winding means.

L'invention est exposée ci-après plus en détail à l'aide des figures des dessins annexés dans lesquels :

  • la figure 1 est une vue à caractère schématique montrant le principe de traitement des fils dans une même position de travail combinant les opérations de câblage ou de retordage, de thermofixation et de bobinage ;
  • la figure 2 est une vue en perspective d'un exemple de réalisation d'une machine selon l'invention ;
  • la figure 3 est une vue à caractère schématique montrant un exemple de réalisation du godet chauffant ;
  • la figure 4 est une vue en perspective de l'accumulateur ;
  • la figure 5 est une vue en coupe longitudinale de l'accumulateur.
The invention is described below in more detail with reference to the figures of the accompanying drawings, in which:
  • the figure 1 is a schematic view showing the principle of son treatment in the same working position combining cabling or twisting, heat-setting and winding operations;
  • the figure 2 is a perspective view of an embodiment of a machine according to the invention;
  • the figure 3 is a schematic view showing an embodiment of the heating cup;
  • the figure 4 is a perspective view of the accumulator;
  • the figure 5 is a longitudinal sectional view of the accumulator.

Comme le montre notamment la figure 1, la machine comprend un bâti (B) avec, d'une manière préférée, une pluralité de postes de traitement identiques. Selon l'invention, chaque poste de traitement intègre, en combinaison et successivement, selon une même position de travail, des moyens de câblage ou de retordage (1) d'un fil, des moyens de thermofixation (2) et de refroidissement (3) du fil, et des moyens de bobinage ou de renvidage (4) du fil (5).As shown in particular figure 1 the machine comprises a frame (B) with, preferably, a plurality of identical processing stations. According to the invention, each processing station integrates, in combination and successively, in the same working position, wiring or twisting means (1) of a wire, heat-setting (2) and cooling means (3). ) of the wire, and winding or winding means (4) of the wire (5).

Selon une caractéristique importante de l'invention, au niveau de chaque poste de traitement, les moyens de câblage ou de retordage (1), de thermofixation (2) et de refroidissement (3), les moyens de bobinage ou renvidage (4) du fil (5) sont montés en combinaison avec des agencements du bâti (B) de la machine, de manière à délimiter un espace réduit et compact intégrant les moyens de dévidage (6) du fil, selon un trajet de longueur réduite (figure 1).According to an important feature of the invention, at each processing station, the wiring or twisting means (1), thermofixation (2) and cooling (3), winding means or winding (4) of the wire (5) are mounted in combination with arrangements of the frame (B) of the machine, so as to delimit a small and compact space integrating the wire feeding means (6), along a path of reduced length ( figure 1 ).

Les moyens de câblage ou de retordage du fil sont constitués, d'une manière parfaitement connue pour un homme du métier, par une broche de câblage ou de retordage permettant de réaliser, soit une opération de câblage direct, soit un retordage. Par exemple, la broche entraînée par tout moyen connu et approprié, reçoit une bobine d'un premier fil à traiter appelé « fil de pot ». Pour réaliser l'opération de câblage direct, la broche présente un fût creux pour l'amenée d'un second fil dit « fil de cantre » en provenance de la bobine de dévidage (6). Le fil de cantre est amené au travers du fût creux de la broche pour être réuni au fil de pot, au niveau d'une tête de câblage (7). Cette tête de câblage peut être combinée avec un moyen d'appel permettant d'annuler la tension résultant du câblage ou de la torsion. Ce moyen d'appel peut être composé d'un ensemble du type à cabestan et cylindre presseur. De telles dispositions ne sont pas décrites en détail car parfaitement connues pour un homme du métier. On renvoie par exemple à l'enseignement du brevet cité US 5,950,412 .The wiring or twisting means of the wire are constituted, in a manner perfectly known to a person skilled in the art, by a wiring or twisting spindle making it possible to carry out either a direct wiring operation or a twisting. For example, the spindle driven by any known and appropriate means, receives a spool of a first thread to be treated called "pot thread". To perform the direct wiring operation, the spindle has a hollow shaft for the supply of a second wire called "creel wire" from the unwinding reel (6). The creel wire is fed through the hollow shaft of the spindle to be joined to the pot wire, at a wiring head (7). This wiring head can be combined with a means of call allowing to cancel the tension resulting from wiring or twisting. This means of appeal can be composed of a set of capstan type and pressure cylinder. Such provisions are not described in detail because they are well known to those skilled in the art. For example, reference is made to the teaching of the patent cited US 5,950,412 .

Les moyens de thermofixation du fil sont constitués par un godet rotatif chauffant (2) suivi d'un accumulateur (3) apte à refroidir et à relaxer le fil, en étant complètement libre et sans tension. Le godet (2) est porté à une température déterminée et est entraîné positivement en rotation par tout moyen connu et approprié. Les moyens de chauffage peuvent, par exemple, être du type à induction.The thermofixation means of the wire consist of a heated rotating cup (2) followed by an accumulator (3) able to cool and relax the wire, being completely free and without tension. The bucket (2) is brought to a predetermined temperature and is positively rotated by any known and appropriate means. The heating means may, for example, be of the induction type.

D'une manière importante, le godet (2) présente des agencements aptes à permettre de contrôler le retrait du fil. Comme le montre notamment la figure 3, le godet présente un profil longitudinal conformé pour délimiter des zones successives et continues s'étendant sur la quasi totalité de sa longueur. Ces zones sont constituées par une zone de reprise (2a), une zone de retrait résiduel (2b) et une zone de fixation (2c).
Les deux zones (2a) et (2b) sont constituées par des portées coniques, tandis que la zone de fixation (2c) est constituée par une portée cylindrique. Les portées coniques (2a) et (2b) présentent une angulation différente. Ainsi, la zone de retrait résiduelle (2b) présente une conicité angulaire α inférieure à la conicité β de la zone de reprise de frisure initiale (2a).Importantly, the bucket (2) has arrangements capable of controlling the withdrawal of the wire. As shown in particular figure 3 , the bucket has a shaped longitudinal profile to define successive and continuous zones extending over almost its entire length. These zones consist of a recovery zone (2a), a residual withdrawal zone (2b) and a fixation zone (2c).
The two zones (2a) and (2b) are constituted by conical bearing surfaces, while the fixing zone (2c) is constituted by a cylindrical bearing surface. The conical bearing surfaces (2a) and (2b) have a different angulation. Thus, the residual withdrawal zone (2b) has an angular conicity α smaller than the β conicity of the initial crimp recovery zone (2a).

On observe également que la zone de retrait résiduelle (2b) présente une longueur supérieure à celle de la zone de reprise (2a). De même, la longueur de la zone de fixation (2c) est supérieure à la somme des longueurs des deux autres zones (2a) et (2b). Dans l'exemple illustré, il apparaît donc que les trois zones (2a), (2b) et (2c) sont issues d'une succession de portées de longueur et de conicité différentes.It is also observed that the residual withdrawal zone (2b) has a length greater than that of the recovery zone (2a). Similarly, length of the attachment zone (2c) is greater than the sum of the lengths of the other two zones (2a) and (2b). In the example illustrated, it therefore appears that the three zones (2a), (2b) and (2c) are derived from a succession of ranges of different length and conicity.

Bien évidemment, d'autres profils non-revendiqués peuvent être envisagés susceptibles de réaliser les mêmes fonctions en vue des mêmes résultats. Par exemple, le godet (2) peut présenter un profil longitudinal courbe.Of course, other unclaimed profiles may be considered likely to perform the same functions for the same results. For example, the bucket (2) may have a curved longitudinal profile.

Compte tenu des caractéristiques du godet chauffant (2), il est possible de fixer le fil câblé ou retordu afin de lui donner de très bonnes caractéristiques de frisure.Given the characteristics of the heating bucket (2), it is possible to fix the wire wired or twisted to give it very good crimp characteristics.

Au niveau de la zone de reprise de frisure initiale (2a), le contact du fil sur le godet chauffant crée un effet choc permettant au fil de retrouver sa frisure initiale. Le retour de la frisure s'accompagne d'un retrait important qui doit être contrôlé. Ce contrôle est obtenu par la conicité β de la portée conique (2a). Après cet effet choc donné au fil, la zone de retrait résiduel (2b) permet au fil de terminer son retrait d'une manière douce et régulière étant donné que la conicité α est inférieure à la portée conique (2b) de longueur supérieure à la portée conique (2a).At the level of the initial crimp recovery zone (2a), the contact of the wire on the heating bucket creates an impact effect allowing the wire to regain its initial crimp. The return of the curl is accompanied by a significant shrinkage that must be controlled. This control is obtained by the conicity β of the conical bearing (2a). After this shock effect given to the wire, the residual withdrawal zone (2b) allows the wire to finish its removal in a smooth and regular manner since the conicity α is smaller than the conical bearing (2b) longer than the conical bearing (2a).

Au niveau de la zone cylindrique (2c), le fil est fixé dans les conditions auxquelles il a été soumis dans les deux zones précédentes. Compte tenu de l'importance de la longueur de la portée cylindrique (2c), la fixation du fil s'effectue en douceur.At the level of the cylindrical zone (2c), the wire is fixed under the conditions to which it has been subjected in the two preceding zones. Given the importance of the length of the cylindrical bearing surface (2c), the fixing of the wire is carried out smoothly.

Compte tenu de ces dispositions, dans les deux zones coniques, le fil garde sa tension d'origine mais est soumis à un retrait. Le fil a tendance à tourner sur lui-même au fur et à mesure de l'augmentation de sa torsion. Il en résulte que toutes les parties du fil sont en contact avec le godet, ce qui assure une forme complètement ronde au fil. Le profil conique et le réglage textile obligent le fil à un retrait calculé.Given these provisions, in both conical zones, the wire retains its original voltage but is subject to a withdrawal. The thread tends to turn on itself as the torsion increases. As a result, all parts of the wire are in contact with the bucket, which ensures a completely round shape to the wire. The conical profile and the textile adjustment force the thread to a calculated shrinkage.

On observe également que pour réaliser la fixation du fil, ce dernier doit rester pendant un certain temps au contact des différentes zones du godet (2). Pour augmenter ce temps de contact, il est connu de réaliser une opération de mouflage du fil sur le godet. Cette opération de mouflage peut être réalisée de manière manuelle ou d'une manière automatique.It is also observed that to achieve the fixing of the wire, the latter must remain for a certain time in contact with the different areas of the bucket (2). To increase this contact time, it is known to carry out a hauling operation of the wire on the bucket. This hauling operation can be carried out manually or automatically.

A la sortie de l'ensemble du godet chauffant (2), le fil est soumis à l'action d'un accumulateur (3) apte à assurer le refroidissement complet et la relaxation du fil après thermofixation et à créer une zone tampon entre la thermofixation et le bobinage permettant de continuer la thermofixation en continu lors du changement de la bobine de réception (4).At the outlet of the assembly of the heating cup (2), the wire is subjected to the action of an accumulator (3) able to ensure the complete cooling and relaxation of the wire after heat setting and to create a buffer zone between the thermofixation and winding to continue thermofixation continuously during the change of the receiving coil (4).

Comme le montrent notamment les figures 4 et 5, l'accumulateur (3) est constitué par un corps rectiligne creux, par exemple, de section transversale quadrangulaire. L'extrémité du corps de l'accumulateur (3), considérée du côté de la sortie, est tronconique et de section progressivement dégressive en direction de ladite extrémité libre pour créer, à l'intérieur du corps, une zone tampon freinant la sortie du fil en lui évitant de sortir directement.As shown in particular by Figures 4 and 5 , the accumulator (3) is constituted by a hollow rectilinear body, for example, of quadrangular cross section. The end of the body of the accumulator (3), considered on the output side, is frustoconical and gradually degressive section towards said free end to create, inside the body, a buffer zone braking the exit of the wire by avoiding him going out directly.

Comme le montrent notamment les figures 1 et 2, cet accumulateur (3), à la sortie du godet chauffant, est disposé, au niveau du poste de traitement considéré, dans un plan sensiblement vertical, le fil entrant par l'extrémité (3b) pour sortir, par simple gravité, au niveau de la partie tronconique (3a). Au niveau de cette extrémité tronconique (3a), l'accumulateur (3) présente une série de barres parallèles (8) montées sur un élément support (9) solidaire par exemple de l'extrémité de l'accumulateur (3). Les barres (8) sont disposées sensiblement perpendiculairement à l'axe longitudinal de l'accumulateur (3), c'est-à-dire perpendiculairement au trajet du fil, pour réaliser une fonction de dévrillage dudit fil en lui donnant la tension nécessaire au bobinage.As shown in particular by figures 1 and 2 this accumulator (3), at the outlet of the heating bucket, is disposed at the level of the treatment station in a substantially vertical plane, the wire entering through the end (3b) to exit, by simple gravity, at the level the frustoconical portion (3a). At this frustoconical end (3a), the accumulator (3) has a series of parallel bars (8) mounted on a support member (9) integral for example with the end of the accumulator (3). The bars (8) are arranged substantially perpendicular to the longitudinal axis of the accumulator (3), that is to say perpendicularly to the path of the wire, to perform a function of unscrewing said wire giving it the voltage required to winding.

D'autres formes de réalisation de l'accumulateur (3) peuvent être envisagées. Par exemple, il peut être constitué par un tapis de relaxation où le fil forme une réserve. Le tapis est disposé entre le godet chauffant (2) et les moyens de renvidage (4). La vitesse de renvidage est réglée pour que la quantité de fil accumulé en réserve, soit maintenue entre deux valeurs minimale et maximale prédéterminées.Other embodiments of the accumulator (3) can be envisaged. For example, it may be constituted by a relaxation mat where the wire forms a reserve. The belt is disposed between the heating cup (2) and the winding means (4). The winding speed is set so that the amount of yarn accumulated in reserve is maintained between two predetermined minimum and maximum values.

A noter également que la dépose du fil (5) dans l'accumulateur (3), quelle que soit sa forme de réalisation peut résulter d'un mouvement relatif, entre un élément de guidage et l'accumulateur lui-même (3). Ce mouvement peut être un mouvement alternatif de type va et vient, ou bien une rotation continue ou alternée. Ou bien le mouvement relatif est créé par le déplacement de l'élément de guidage ou de l'accumulateur lui-même.Also note that the removal of the wire (5) in the accumulator (3), whatever its embodiment may result from a relative movement between a guide member and the accumulator itself (3). This movement can be a reciprocating movement of type back and forth, or a continuous or alternating rotation. Or the relative movement is created by the displacement of the guide element or the accumulator itself.

Compte tenu des caractéristiques à la base de l'invention, il apparaît que chaque poste de traitement comprend successivement, à partir de la bobine de dévidage (6), selon une même position de travail délimitant un espace réduit et compact avec un trajet de fil également de longueur réduite :

  • une broche de câblage ou du retordage du fil (1), l'organe presseur délivreur (7) assurant une limitation de la tension du fil (5) et fixant un niveau de tension en aval ;
  • le godet rotatif chauffant (2) ;
  • l'accumulateur de refroidissement (3) ;
  • les barres de dévrillage (8) ;
  • la bobine de renvidage (4).
In view of the basic characteristics of the invention, it appears that each treatment station comprises, successively, from the unwinding reel (6), in a same working position defining a compact and compact space with a thread path also of reduced length:
  • a wiring spindle or twisting of the thread (1), the delivery pressing member (7) providing tension limitation of the thread (5) and setting a downstream tension level;
  • the heated rotary bucket (2);
  • the cooling accumulator (3);
  • the straightening bars (8);
  • the winding spool (4).

Il est bien évident que ces différents moyens peuvent être montés en combinaison avec tout système de contrôle de qualité en ligne, l'accumulateur tampon en sortie de broche, de système de frisage du fil, de système de détection de casse fil, ....It is obvious that these different means can be mounted in combination with any online quality control system, buffer accumulator output pin, wire crimp system, wire break detection system, ... .

Les avantages ressortent bien de la description, en particulier on souligne et on rappelle :

  • la fixation à la continue d'un seul fil à la fois, selon un trajet réduit permet de s'affranchir du problème de déchets liés à la dispersion de la qualité des différentes bobines lorsqu'elles sont traitées conjointement ;
  • la possibilité de traiter des qualités de fils ayant une torsion élevée ;
  • le gain de productivité obtenu ;
  • la flexibilité du processus ;
  • le contrôle de retrait du fil compte tenu du profil du godet chauffant ;
  • l'utilisation d'un accumulateur permettant de refroidir et de relaxer le fil à l'état complètement libre, sans aucune tension ;
  • la meilleure régularité de la tension du fil résultant d'un passage du fil très court avec des points de contact ;
  • la distance minimale entre le délivreur et le godet chauffant permet de mieux contrôler la torsion avant fixation en évitant des changements de torsion à court terme ;
  • la combinaison des trois opérations de câblage ou de retordage, de thermofixation et de bobinage, permet de limiter, d'une manière importante, la gestion des matières en encours.
The advantages stand out well from the description, in particular one underlines and recalls:
  • the continuous fixing of a single wire at a time, in a reduced path eliminates the problem of waste associated with the dispersion of the quality of the different coils when they are treated together;
  • the possibility of treating yarn qualities having high torsion;
  • the productivity gain obtained;
  • the flexibility of the process;
  • wire withdrawal control considering the profile of the heating bucket;
  • the use of an accumulator for cooling and relaxing the wire in the completely free state, without any voltage;
  • the best regularity of the tension of the thread resulting from a passage of the very short thread with points of contact;
  • the minimum distance between the delivery and the heating bucket makes it possible to better control the torsion before fixing by avoiding short-term torsional changes;
  • the combination of the three operations of cabling or twisting, thermofixation and winding, allows to limit, in a significant way, the management of materials outstanding.

Claims (12)

  1. Machine for stranding or twisting and continuous setting of yarns comprising a plurality of treatment stations integrating, in combination or in succession, according to the same working position:
    - means (1) for stranding or twisting a yarn (5),
    - thermosetting means consisting of a rotating heating bucket (2) which has arrangements suitable for controlling the shrinkage of the yam, the said arrangements consisting of a longitudinal section bounding successive zones extending along nearly the whole length of the said bucket, that is a zone of resumption (2a) of the initial curling, a zone of residual shrinkage (2b) and a setting zone (2c),
    - the zones (2a) of resumption of the initial curling and of residual shrinkage (2b) consist of conical faces, while the setting zone (2c) consists of a cylindrical face,
    - a magazine (3) suitable for cooling and relaxing the yarn in the completely free state, without tension,
    - means (4) for winding or rewinding the yarn (5),
    the said means being subject to yarn drive and guiding members.
  2. Machine according to Claim 1, characterized in that, at the or each treatment station, the stranding or twisting (1), thermosetting (2) and winding or rewinding (4) means are mounted in combination with the yarn feed members and arrangements of the frame (8) of the said machine, in order to bound a reduced and compact space integrating yarn unwinding means (6), according to a path of the yarn having a reduced length.
  3. Machine according to Claim 1, characterized in that the two conical faces (2a, 2b) have different angular conicity values (β, α), the residual shrinkage zone (2b) having an angular value (α) lower than that (β) of the resumption zone (2a) of the initial curling.
  4. Machine according to Claim 1, characterized in that the length of the setting zone (2c) is greater than the sum of the lengths of the other two zones (2a, 2b).
  5. Machine according to Claim 1, characterized in that the rotating heating bucket (2) is subject to means suitable for permitting an automatic half turn of the yarn.
  6. Machine according to Claim 1, characterized in that the magazine (3) consists of a hollow rectilinear body placed substantially vertically, and whereof the end (3a), considered from the discharge side, is frustoconical in order to create, inside said body, a buffer zone braking the discharge of the said yarn by preventing it from exiting directly.
  7. Machine according to Claim 6, characterized in that, at the exit of the magazine (3), the yarn is subject to the action of rods (8) suitable for untwisting the yarn and applying to it the tension necessary for winding.
  8. Machine according to Claim 1, characterized in that the magazine (3) consists of a relaxation belt where the yarn forms a reserve, the rewinding speed being adjusted so that the quantity of yarn accumulated in reserve is maintained between two predefined minimum and maximum values.
  9. Machine according to Claims 6 and 7 or according to Claim 8, characterized in that the yarn (5) is deposited in the magazine (3) under the effect of a relative movement between a guiding element and the magazine itself.
  10. Machine according to Claim 9, characterized in that the relative movement is created by a movement of the yarn guiding element.
  11. Machine according to Claim 9, characterized in that the relative movement is created by a movement of the magazine itself.
  12. Machine according to Claims 7 to 11, characterized in that each treatment station comprises in succession, from an unwinding spool (6):
    - a spindle (1) for stranding or twisting the yarn (5) as stranding or twisting means;
    - a pressure feed member (7) for limiting the yarn tension and fixing a downstream twist level;
    - the rotating heating bucket (2);
    - the magazine (3) suitable for cooling and relaxing the yarn, equipped with the untwisting rods (8); and
    - the winding or rewinding means (4).
EP04767882A 2003-07-22 2004-07-09 Machine for yarn cabling/twisting and continuous setting Expired - Lifetime EP1646740B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0309195A FR2857985B1 (en) 2003-07-22 2003-07-22 MACHINE FOR WIRING / TORSIONING AND CONTINUOUS FIXING OF WIRES
PCT/FR2004/050321 WO2005010251A2 (en) 2003-07-22 2004-07-09 Machine for yarn cabling/twisting and continuous setting

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EP1646740A2 EP1646740A2 (en) 2006-04-19
EP1646740B1 true EP1646740B1 (en) 2008-09-03

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EP2307599A4 (en) * 2008-07-30 2016-04-20 INVISTA Technologies S à r l Systems and methods of twisting and heat-setting yarn, and apparatus for twisting yarn and heat-setting yarn
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CN102995189A (en) * 2012-09-30 2013-03-27 杭州华亨纺织有限公司 Double-twist heat setting process for rayon
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DE602004016338D1 (en) 2008-10-16
FR2857985B1 (en) 2006-02-10
CN1894450A (en) 2007-01-10
WO2005010251A2 (en) 2005-02-03
US20070095043A1 (en) 2007-05-03
ATE407241T1 (en) 2008-09-15
WO2005010251A9 (en) 2005-05-19
EP1646740A2 (en) 2006-04-19
FR2857985A1 (en) 2005-01-28
WO2005010251A3 (en) 2005-03-24

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