EP0208628B1 - Device for regulating the tension of a thread during the various transformations it undergoes in the course of its manufacture - Google Patents

Device for regulating the tension of a thread during the various transformations it undergoes in the course of its manufacture Download PDF

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Publication number
EP0208628B1
EP0208628B1 EP86420150A EP86420150A EP0208628B1 EP 0208628 B1 EP0208628 B1 EP 0208628B1 EP 86420150 A EP86420150 A EP 86420150A EP 86420150 A EP86420150 A EP 86420150A EP 0208628 B1 EP0208628 B1 EP 0208628B1
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EP
European Patent Office
Prior art keywords
cups
thread
track
diameter
wire
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Expired
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EP86420150A
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German (de)
French (fr)
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EP0208628A1 (en
Inventor
Carlos Matas Gabalda
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Ic Acbf SA
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Ic Acbf SA
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Publication of EP0208628A1 publication Critical patent/EP0208628A1/en
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    • 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
    • D01H13/10—Tension devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/18—Driven rotary elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the thread regulators proposed to date are generally in the form of a rotary device constituted by two cups between which the thread passes. These cups are mounted on a hub and are generally locked against each other by means of a nut allowing their pressure to be adjusted and consequently the tension which they allow to communicate with the wire.
  • the hub is friction mounted on a rotary shaft common to all positions on the same face of the machine. To achieve the relaxation of the wire, it is essential that the speed of this device is greater than the speed of movement of said wire, so that it will tend to rest on the cups while bracing on a circular arc.
  • Such a device is very widely used to date but has the disadvantage of posing problems when launching the wires, given that they can get caught in the deliverers during the various manipulations required by such an operation.
  • such holding devices can only be used for a single wire and only provide a single holding action on the path of the wire.
  • Such a device can either allow two wires to be treated from two neighboring positions, the central cylindrical track being used during launching and each wire being pushed back on the two lateral tracks formed by the pairs of cups after start-up, or to ensure two successive detention operations on the route of the same wire.
  • the central cylindrical track is constituted by a part interposed between the two hubs and is held by means of screws, the drive by the drive shaft being transmitted by a seal; in such a case, this track has a diameter greater than the outside diameter of the cups and it has two peripheral edges making it possible to maintain the wire or wires during the launching operation.
  • the central track is produced in the hub itself, forms an integral part of it, and its outside diameter is less than the diameter of the lateral edges of the cups which therefore make it possible to ensure positioning and maintenance of the wire or wires when they are in contact with this central track and serve as a ramp allowing the wire or wires to be transferred between the cups after launch.
  • the wire tensioner device essentially consists of an assembly mounted integral with a motor shaft (1).
  • This assembly designated by the general reference (2) consists of two pairs of cups respectively (3, 4) and (5, 6) mounted on two hubs (7.8).
  • Each of these pairs of cups constitutes, in known manner, a wire holding device.
  • the nuts (9,10) mounted on the hubs make it possible to adjust the pressure between the cups (3, 4) and (5, 6) and therefore to adjust the tension that is communicated to the wire.
  • the two sets of cups are mounted on either side of a circular track (11), constituted in this case by an insert between the two hubs (7, 8).
  • the hubs (7, 8) and the track (11) are joined together by means of screws (12, 13) and the assembly is rotated by the shaft (1) by means of a seal. (14).
  • the circular track (11) is smooth, has an outside diameter D greater than the diameter d, of the contact circle between the cups but also the outside diameter d 2 of said cups (3, 4) and (5, 6).
  • two flanges (15, 16) are provided which make it possible to maintain the wire on the circular track (11) during the launching operation.
  • FIG. 2 illustrates a second embodiment of a device according to the invention, device in which the same references are used to designate the elements identical or equivalent to those forming the subject of the first embodiment described above.
  • the central circular track (11) is formed directly in one of the hubs, (7) in the present case, the two hubs (7, 8) also being assembled by means of screws (12, 13) and mounted on the shaft (not shown) by means of a seal (14).
  • the diameter D of the track (11) is between the diameter d, of the contact circle between the cups (3, 4) or (5, 6) and the outside diameter d 2 of said cups.
  • edges (4a) and (5a) of the cups (4) and (5) make it possible to maintain the wire on the track (11) during the launching operation and serve as a ramp facilitating the transfer of said wire between the cups (3, 4) and (5, 6) when launching is carried out and the wires are placed under normal working conditions.
  • Such thread holding devices can be used for any single or double twist twisting textile material, either to ensure the relaxation of two threads working on two successive positions, or to ensure two successive detentations on the same thread when several operations are performed continuously, for example a twisting operation followed by a heat treatment, a twisting operation followed by a false twisting treatment.
  • FIGS. 3 and 4 illustrate such possibilities, it being understood that other applications could be envisaged for such a device, for example on installations making it possible to carry out only heat shrinkage treatments on a wire. , on texturing machines by false twist or the like and, in general, in all cases where it is desired to modify the tension communicated to a thread during a treatment.
  • the regulator (2) makes it possible to treat two wires from two neighboring positions, one passing between the cups (3) and (4), the second between the cups (5) and (6).
  • the two wires from the two neighboring positions are positioned on the central track (11) that such a pressure regulator comprises and, when launching is carried out, the wires are pushed back onto the tracks (3, 4) and (5, 6 ) in order to get into working conditions.
  • such a wire expander device (2) can also be used in the case of a double-twist machine enabling heat treatment to be carried out following the twisting operation.
  • a double-twist machine enabling heat treatment to be carried out following the twisting operation.
  • Such a machine is the subject in particular of French patent 2,430,991 and will not be described in detail.
  • the difference is essential ment in the presence of an oven (32) for the thermal treatment of the wire after twisting.
  • the twisted wire (24) passes through the barbin (25) then around the deliverer (2) according to the invention, before being introduced inside the oven (32).
  • the outlet of the oven (32) it is sent via guides (33, 34) to be brought by means of reels (26, 27, 28).
  • the expansion device (2) is arranged above the double twist spindle. The wire coming from the double twist spindle passes over one of the tracks, for example the track formed by the cups (3, 4) then, after passing through the oven (32), it is brought so as to pass over the second track (5, 6).
  • detentions can also be adapted by varying the pressure exerted by the nuts (9, 10) on each of the respective tracks formed by the cups (3.4) and (5, 6).
  • the wire is placed on the central cylindrical track (11) then, after launching, the turns of the wire are pushed back respectively on the tracks (3, 4) and (5, 6), in order to be able to get into the work situation.
  • Such a device can be used in many fields and in particular on any single or double twist twisting material in which the thread will have to undergo other simultaneous or continuous treatments with the twist, for example a heat treatment, a texturing treatment, or even the addition of a second thread ..

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Ropes Or Cables (AREA)
  • Sewing Machines And Sewing (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Description

La fabrication des fils destinés au tissage, tricotage... qu'ils soient d'origine naturelle, artificielle ou synthétique implique un certain nombre d'opérations (torsion, étirage, traitement thermique..) au cours desquelles la matière doit être maintenue sous une tension bien déterminée. Par ailleurs, il est parfois nécessaire de faire varier la tension du fil au cours de son traitement, par exemple de diminuer cette tension en amont de l'organe de bobinage car il est bien connu que lorsque l'on bobine un fil à l'état fortement tendu et sans précaution particulière, on obtient des bobines très dures, dont le dévidage est pratiquement impossible. Pour ce faire, ainsi que cela ressort notamment du brevet français 2 268 884, on dispose, entre le dernier barbin et le guide fil de l'organe de bobinage, un dispositif dénommé « détendeur de fil ou « délivreur de survitesse » qui permet un entraînement du fil par glissement et appelle celui-ci à une vitesse supérieure au défilement normal. Un tel dispositif permet, en fonction des variations de la vitesse d'appel du fil, d'obtenir automatiquement une auto-régulation de la tension en sortie du délivreur, cette tension étant maintenue à une valeur très faible. Il est utilisé, non seulement dans les installations permettant de communiquer une torsion au fil et comportant une broche double torsion (FR-A-2 268 884) mais également, dans des installations impliquant plusieurs traitements, effectués soit simultanément soit en continu, tels que par exemple des installations de retordage à simple ou double torsion dans lesquelles les fils subissent un traitement thermique avant renvidage (FR-A-2430991, US-A-3 525 205..). Les détendeurs de fils proposés à ce jour se présentent d'une manière générale sous la-forme d'un dispositif rotatif constitué par deux coupelles entre lesquelles passe le fil. Ces coupelles sont montées sur un moyeu et sont bloquées l'une contre l'autre en général au moyen d'un écrou permettant de régler leur pression et par suite, la tension qu'elles permettent de communiquer au fil. Le moyeu est monté à friction sur un arbre rotatif commun à toutes les positions d'une même face de la machine. Pour réaliser la détente du fil, il est essentiel que la vitesse de ce dispositif soit supérieure à la vitesse de défilement dudit fil, de sorte qu'il aura tendance à se reposer sur les coupelles en embarrant sur un arc de cercle.The manufacture of yarns intended for weaving, knitting ... whether they are of natural, artificial or synthetic origin involves a certain number of operations (twisting, stretching, heat treatment, etc.) during which the material must be kept under a well-defined tension. In addition, it is sometimes necessary to vary the tension of the wire during its treatment, for example to reduce this tension upstream of the winding member because it is well known that when one spools a wire to the strongly stretched state and without special precautions, very hard coils are obtained, the reeling of which is practically impossible. To do this, as is apparent in particular from French patent 2 268 884, there is, between the last barbin and the wire guide of the winding member, a device called "wire regulator or" overspeed deliverer "which allows a dragging of the thread and calling it at a speed higher than normal scrolling. Such a device makes it possible, as a function of the variations in the calling speed of the wire, to automatically obtain self-regulation of the voltage at the output of the deliverer, this voltage being maintained at a very low value. It is used not only in installations allowing a twist to be communicated to the wire and comprising a double twist pin (FR-A-2 268 884) but also, in installations involving several treatments, carried out either simultaneously or continuously, such as for example single or double twist twisting installations in which the threads undergo a heat treatment before rewinding (FR-A-2430991, US-A-3 525 205 ..). The thread regulators proposed to date are generally in the form of a rotary device constituted by two cups between which the thread passes. These cups are mounted on a hub and are generally locked against each other by means of a nut allowing their pressure to be adjusted and consequently the tension which they allow to communicate with the wire. The hub is friction mounted on a rotary shaft common to all positions on the same face of the machine. To achieve the relaxation of the wire, it is essential that the speed of this device is greater than the speed of movement of said wire, so that it will tend to rest on the cups while bracing on a circular arc.

Un tel type de dispositif est très largement utilisé à ce jour mais présente cependant comme inconvénient de poser des problèmes lors du lancement des fils, étant donné qu'ils peuvent se prendre dans les délivreurs lors des différentes manipulations nécessitées par une telle opération. De plus, à ce jour, de tels dispositifs de détention ne sont utilisables que pour un seul fil et ne permettent d'assurer qu'une seule action de détention sur le trajet du fil.Such a device is very widely used to date but has the disadvantage of posing problems when launching the wires, given that they can get caught in the deliverers during the various manipulations required by such an operation. In addition, to date, such holding devices can only be used for a single wire and only provide a single holding action on the path of the wire.

Or on a trouvé, et c'est ce qui fait l'objet de la présente invention, un perfectionnement à de tels dispositifs détendeurs de fils qui, non seulement, permet de faciliter les opérations de lancement mais également, peut être utilisé soit pour traiter deux fils en parallèles soit pour assurer deux opérations de détention successives sur le trajet d'un même fil.However, we have found, and this is what is the subject of the present invention, an improvement to such wire tensioning devices which not only makes it easier to launch operations but also can be used either to treat two wires in parallel either to ensure two successive holding operations on the path of the same wire.

D'une manière générale, le dispositif selon l'invention permettant de régler la tension d'un fil lors des différentes opérations de transformation qu'il subit au cours de sa fabrication (dispositif désigné par l'expression « détendeur dans la description) est constitué de paires de coupelles entre lesquelles passe le fil et qui sont.montées sur un moyeu entraîné par un arbre rotatif, selon lequel :

  • - deux paires de coupelles sont montées de part et d'autre d'une piste cylindrique solidaire en rotation desdites coupelles, et dont le diamètre D est au moins égal au diamètre d1 d'un contact entre les coupelles, le fil étant, lors du lancement, en contact avec la piste cylindrique centrale*et, une fois son lancement effectué, repoussé sur les pistes latérales constituées par chaque paire de coupelles pour le placer dans des conditions normales de travail après lancement ;
  • - deux écrous maintiennent chaque paire de coupelles l'une contre l'autre et permettent de faire varier leur pression et donc de régler la tension que l'on communique au fil.
In general, the device according to the invention making it possible to adjust the tension of a thread during the various transformation operations which it undergoes during its manufacture (device designated by the expression "regulator in the description) is consisting of pairs of cups between which the wire passes and which are mounted on a hub driven by a rotary shaft, according to which:
  • - Two pairs of cups are mounted on either side of a cylindrical track integral in rotation with said cups, and whose diameter D is at least equal to the diameter d1 of a contact between the cups, the wire being, during the launch, in contact with the central cylindrical track * and, once launched, pushed back onto the lateral tracks formed by each pair of cups to place it in normal working conditions after launch;
  • - two nuts hold each pair of cups against each other and allow them to vary their pressure and therefore adjust the tension that is communicated to the wire.

Un tel dispositif peut, soit permettre de traiter deux fils de deux positions voisines, la piste cylindrique centrale étant utilisée lors du lancement et chaque fil étant repoussé sur les deux pistes latérales constituées par les paires de coupelles après mise en route, soit pour assurer deux opérations de détention successives sur le trajet d'un même fil.Such a device can either allow two wires to be treated from two neighboring positions, the central cylindrical track being used during launching and each wire being pushed back on the two lateral tracks formed by the pairs of cups after start-up, or to ensure two successive detention operations on the route of the same wire.

Selon une forme de réalisation, la piste cylindrique centrale est constituée par une pièce interposée entre les deux moyeux et est maintenue par l'intermédiaire de vis, t'entraînement par l'arbre moteur étant transmis par un joint ; dans un tel cas, cette piste a un diamètre supérieur au diamètre extérieur des coupelles et elle comporte deux rebords périphériques permettant d'assurer le maintien du ou des fils lors de l'opération de lancement.According to one embodiment, the central cylindrical track is constituted by a part interposed between the two hubs and is held by means of screws, the drive by the drive shaft being transmitted by a seal; in such a case, this track has a diameter greater than the outside diameter of the cups and it has two peripheral edges making it possible to maintain the wire or wires during the launching operation.

Selon une autre forme de réalisation, la piste centrale est réalisée dans le moyeu lui-même, forme partie intégrante de celui-ci, et son diamètre extérieur est inférieur au diamètre des rebords latéraux des coupelles qui permettent donc d'assurer le positionnement et le maintien du ou des fils lorsqu'ils sont en contact avec cette piste centrale et servent de rampe permettant de transférer le ou les fils entre les coupelles après lancement.According to another embodiment, the central track is produced in the hub itself, forms an integral part of it, and its outside diameter is less than the diameter of the lateral edges of the cups which therefore make it possible to ensure positioning and maintenance of the wire or wires when they are in contact with this central track and serve as a ramp allowing the wire or wires to be transferred between the cups after launch.

L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce aux deux exemples de réalisation donnés ci-après et qui sont illustrés par les schémas annexés dans lesquels :

  • - la figure 1 est une vue en coupe d'une première forme de réalisation d'un dispositif détendeur de fil conforme à l'invention ;
  • - la figure 2 est une vue en coupe d'une deuxième forme de réalisation d'un dispositif conforme à l'invention ;
  • - les figures 3 et 4 sont des vues de côté montrant deux exemples d'application de tels détendeurs, la figure 3 illustrant l'utilisation sur une machine de retordage à double torsion, le dispositif selon l'invention permettant alors de traiter deux fils de deux positions voisines et, la figure 4 montrant un exemple de réalisation d'une machine de retordage comportant une opération de traitement thermique, le détendeur selon l'invention permettant alors de régler la tension après chacune des phases de traitement (après torsion et après traitement thermique).
The invention and the advantages which it brings will however be better understood thanks to the two embodiments given below and which are illustrated by the appended diagrams in which:
  • - Figure 1 is a sectional view of a first embodiment of a thread expander device according to the invention;
  • - Figure 2 is a sectional view of a second embodiment of a device according to the invention;
  • - Figures 3 and 4 are side views showing two examples of the application of such pressure reducers, Figure 3 illustrating the use on a double twist twisting machine, the device according to the invention then making it possible to treat two son of two neighboring positions and, FIG. 4 showing an exemplary embodiment of a twisting machine comprising a heat treatment operation, the regulator according to the invention then making it possible to adjust the tension after each of the treatment phases (after twisting and after treatment thermal).

Si l'on se reporte à la figure 1, le dispositif détendeur de fil conforme à l'invention se compose essentiellement d'un ensemble monté solidaire d'un arbre moteur (1). Cet ensemble désigné par la référence générale (2) est constitué de deux paires de coupelles respectivement (3, 4) et (5, 6) montées sur deux moyeux (7.8). Chacune de ces paires de coupelles constitue, de manière connue, un dispositif de détention de fil. Les écrous (9,10) montés sur les moyeux permettent de régler la pression entre les coupelles (3, 4) et (5, 6) et donc de régler la tension que l'on communique au fil.If we refer to Figure 1, the wire tensioner device according to the invention essentially consists of an assembly mounted integral with a motor shaft (1). This assembly designated by the general reference (2) consists of two pairs of cups respectively (3, 4) and (5, 6) mounted on two hubs (7.8). Each of these pairs of cups constitutes, in known manner, a wire holding device. The nuts (9,10) mounted on the hubs make it possible to adjust the pressure between the cups (3, 4) and (5, 6) and therefore to adjust the tension that is communicated to the wire.

Conformément à l'invention, les deux jeux de coupelles sont montés de part et d'autre d'une piste circulaire (11), constituée dans le cas présent par une pièce rapportée entre les deux moyeux (7, 8). La solidarisation des moyeux (7, 8) et de la piste (11) est obtenue au moyen de vis (12, 13) et l'ensemble est entraîné en rotation par l'arbre (1) par l'intermédiaire d'un joint (14). Ainsi que cela ressort de la figure 1, la piste circulaire (11) est lisse, a un diamètre extérieur D supérieur au diamètre d, du cercle de contact entre les coupelles mais également au diamètre extérieur d2 desdites coupelles (3, 4) et (5, 6). De part et d'autre de cette piste (11), sont prévus deux rebords (15, 16) qui permettent d'assurer le maintien du fil sur la piste circulaire (11) lors de l'opération de lancement.According to the invention, the two sets of cups are mounted on either side of a circular track (11), constituted in this case by an insert between the two hubs (7, 8). The hubs (7, 8) and the track (11) are joined together by means of screws (12, 13) and the assembly is rotated by the shaft (1) by means of a seal. (14). As can be seen from FIG. 1, the circular track (11) is smooth, has an outside diameter D greater than the diameter d, of the contact circle between the cups but also the outside diameter d 2 of said cups (3, 4) and (5, 6). On either side of this track (11), two flanges (15, 16) are provided which make it possible to maintain the wire on the circular track (11) during the launching operation.

La figure 2 illustre un deuxième mode de réalisation d'un dispositif conforme à l'invention, dispositif dans lequel les mêmes références sont utilisées pour désigner les éléments identiques ou équivalents à ceux faisant l'objet du premier mode de réalisation décrit précédemment.FIG. 2 illustrates a second embodiment of a device according to the invention, device in which the same references are used to designate the elements identical or equivalent to those forming the subject of the first embodiment described above.

Par rapport au mode de réalisation faisant l'objet de la figure 1, dans cette variante, la piste circulaire centrale (11) est formée directement dans l'un des moyeux, (7) dans le cas présent, les deux moyeux (7, 8) étant également assemblés au moyen de vis (12, 13) et montés sur l'arbre (non représenté) au moyen d'un joint (14). Dans cette variante, le diamètre D de la piste (11) est compris entre le diamètre d, du cercle de contact entre les coupelles (3, 4) ou (5, 6) et le diamètre extérieur d2 desdites coupelles. Les rebords (4a) et (5a) des coupelles (4) et (5) permettent d'assurer le maintien du fil sur la piste (11) lors de l'opération de lancement et servent de rampe facilitant le transfert dudit fil entre les coupelles (3, 4) et (5, 6) lorsque le lancement est effectué et que l'on place les fils dans les conditions normales de travail.Compared to the embodiment shown in FIG. 1, in this variant, the central circular track (11) is formed directly in one of the hubs, (7) in the present case, the two hubs (7, 8) also being assembled by means of screws (12, 13) and mounted on the shaft (not shown) by means of a seal (14). In this variant, the diameter D of the track (11) is between the diameter d, of the contact circle between the cups (3, 4) or (5, 6) and the outside diameter d 2 of said cups. The edges (4a) and (5a) of the cups (4) and (5) make it possible to maintain the wire on the track (11) during the launching operation and serve as a ramp facilitating the transfer of said wire between the cups (3, 4) and (5, 6) when launching is carried out and the wires are placed under normal working conditions.

De tels dispositifs de détention de fil peuvent être utilisés pour tout matériel textile de retordage à simple ou double torsion, soit pour assurer la détente de deux fils travaillant sur deux positions successives, soit pour assurer deux détentes successives sur un même fil quand plusieurs opérations sont effectuées en continu, par exemple une opération de torsion suivie d'un traitement thermique, une opération de torsion suivie d'un traitement de fausse torsion..Such thread holding devices can be used for any single or double twist twisting textile material, either to ensure the relaxation of two threads working on two successive positions, or to ensure two successive detentations on the same thread when several operations are performed continuously, for example a twisting operation followed by a heat treatment, a twisting operation followed by a false twisting treatment.

Les deux exemples d'application illustrés par les figures 3 et 4 illustrent de telles possibilités, étant entendu que d'autres applications pourraient être envisagées pour un tel dispositif, par exemple sur des installations permettant de réaliser uniquement des traitements thermiques de rétraction sur un fil, sur des machines de texturation par fausse torsion ou similaire et, en général, dans tous les cas où l'on souhaite modifier la tension communiquée à un fil lors d'un traitement.The two application examples illustrated in FIGS. 3 and 4 illustrate such possibilities, it being understood that other applications could be envisaged for such a device, for example on installations making it possible to carry out only heat shrinkage treatments on a wire. , on texturing machines by false twist or the like and, in general, in all cases where it is desired to modify the tension communicated to a thread during a treatment.

Dans l'exemple d'application illustré par la figure 3, le dispositif détendeur conforme à l'invention est celui qui est illustré par la figure 1, dispositif désigné par la référence générale (2) est monté sur un métier de retordage qui comporte :

  • - une broche à double torsion (21), d'un type en soi connu, montée sur le bâti (23) de la machine et, entraînée en rotation par tout moyen approprié, tel qu'une courroie ou un moteur individuel ;
  • - le fil (24) en quittant la broche à double torsion (21) passe dans un barbin queue de cochon (25) puis sur le détendeur (2) conforme à l'invention ;
  • - le fil est embarré autour du détendeur (2) et est amené à l'ensemble de bobinage proprement dit comprenant un guide de va-et-vient (26), un cylindre moteur (27) et une bobine de renvidage (28) montée sur un support pivotant (29).
In the example of application illustrated by FIG. 3, the expansion device according to the invention is that which is illustrated by FIG. 1, device designated by the general reference (2) is mounted on a twisting loom which comprises:
  • - a double twist spindle (21), of a type known per se, mounted on the frame (23) of the machine and, driven in rotation by any suitable means, such as a belt or an individual motor;
  • - The wire (24) leaving the double twist spindle (21) passes through a pigtail beard (25) then on the regulator (2) according to the invention;
  • - the wire is interwoven around the regulator (2) and is brought to the actual winding assembly comprising a reciprocating guide (26), a driving cylinder (27) and a winding reel (28) mounted on a pivoting support (29).

Conformément à l'invention, le détendeur (2) permet de traiter deux fils de deux positions voisines, l'un passant entre les coupelles (3) et (4), le second entre les coupelles (5) et (6).According to the invention, the regulator (2) makes it possible to treat two wires from two neighboring positions, one passing between the cups (3) and (4), the second between the cups (5) and (6).

Lors du lancement, les deux fils des deux positions voisines sont positionnés sur la piste centrale (11) que comporte un tel détendeur et, lorsque le lancement est effectué, les fils sont repoussés sur les pistes (3, 4) et (5, 6) afin de se placer dans les conditions de travail.During launching, the two wires from the two neighboring positions are positioned on the central track (11) that such a pressure regulator comprises and, when launching is carried out, the wires are pushed back onto the tracks (3, 4) and (5, 6 ) in order to get into working conditions.

Ainsi que cela ressort de la figure 4, un tel dispositif détendeur de fil (2) peut également être utilisé dans le cas de machine double torsion permettant d'effectuer un traitement thermique à la suite de l'opération de torsion. Une telle machine fait l'objet notamment du brevet français 2 430 991 et ne sera pas décrite en détail.As can be seen from FIG. 4, such a wire expander device (2) can also be used in the case of a double-twist machine enabling heat treatment to be carried out following the twisting operation. Such a machine is the subject in particular of French patent 2,430,991 and will not be described in detail.

Par rapport à la machine décrite précédemment pour la figure 3, la différence réside essentiellement en la présence d'un four (32) pour le traitement thermique du fil après torsion. Dans une telle machine, le fil (24) tordu passe dans le barbin (25) puis autour du délivreur (2) conforme à l'invention, avant d'être introduit à l'intérieur du four (32). A la sortie du four (32), il est envoyé par l'intermédiaire de guides (33, 34) pour être amené au moyen de renvidages (26, 27, 28). Le dispositif détendeur (2) est disposé au-dessus de la broche de double torsion. Le fil provenant de la broche double torsion passe sur l'une des pistes, par exemple la piste formée par les coupelles (3, 4) puis, après passage dans le four (32), il est amené de manière à passer sur la seconde piste (5, 6). Il est donc possible, grâce à un tel dispositif, d'assurer d'une part, une détention du fil après torsion avant entrée dans le four puis une seconde détention après passage dans le four et avant renvidage. Les détentions peuvent par ailleurs être adaptées en jouant sur la pression exercée par les écrous (9, 10) sur chacune des pistes respectives formées par les coupelles (3.4) et (5, 6).Compared to the machine described above for Figure 3, the difference is essential ment in the presence of an oven (32) for the thermal treatment of the wire after twisting. In such a machine, the twisted wire (24) passes through the barbin (25) then around the deliverer (2) according to the invention, before being introduced inside the oven (32). At the outlet of the oven (32), it is sent via guides (33, 34) to be brought by means of reels (26, 27, 28). The expansion device (2) is arranged above the double twist spindle. The wire coming from the double twist spindle passes over one of the tracks, for example the track formed by the cups (3, 4) then, after passing through the oven (32), it is brought so as to pass over the second track (5, 6). It is therefore possible, thanks to such a device, to ensure on the one hand, a detention of the wire after twisting before entering the oven and then a second detention after passage through the oven and before rewinding. The detentions can also be adapted by varying the pressure exerted by the nuts (9, 10) on each of the respective tracks formed by the cups (3.4) and (5, 6).

Comme dans le cas précédent, lors de l'opération de lancement, le fil est disposé sur la piste cylindrique centrale (11) puis, après lancement, les spires du fil sont repoussées respectivement sur les pistes (3, 4) et (5, 6), afin de pouvoir se placer dans la situation de travail.As in the previous case, during the launching operation, the wire is placed on the central cylindrical track (11) then, after launching, the turns of the wire are pushed back respectively on the tracks (3, 4) and (5, 6), in order to be able to get into the work situation.

Outre le fait qu'un tel dispositif permet de faciliter les opérations de lancement et de traiter soit deux fils en parallèles soit d'effectuer deux variations de tension sur un même fil il est, par ailleurs, de conception très simple permettant d'en assurer un entretien aisé.In addition to the fact that such a device makes it possible to facilitate launching operations and to process either two wires in parallel or to carry out two voltage variations on the same wire, it is, moreover, of very simple design making it possible to ensure it easy maintenance.

Un tel dispositif peut être utilisé dans de nombreux domaines et notamment sur tout matériel de retordage simple ou double torsion dans lequel le fil devra subir d'autres traitements simultanés ou en continu avec la torsion, par exemple un traitement thermique, un traitement de texturation, voire même l'addition d'un deuxième fil..Such a device can be used in many fields and in particular on any single or double twist twisting material in which the thread will have to undergo other simultaneous or continuous treatments with the twist, for example a heat treatment, a texturing treatment, or even the addition of a second thread ..

Claims (5)

1. Device for regulating the tension of a thread on a textile machine through the different transformation operations to which said thread is subjected during its manufacture, said device comprising pairs of cups between which passes the thread and which are mounted on a hub driven by a rotary shaft device wherein :
- two pairs of cups (3, 4) and (5, 6) are mounted on either side of a cylindrical track (11) which is fast in rotation with said cups, said track having a diameter D at least equal to the diameter d1 of the circle of contact between the cups, and said thread being, while thrown, in contact with the central cylindrical track (11), and after throwing, pushed back onto the side tracks constituted by each pair of cups (3,4), (5, 6) in order to be placed in the normal working conditions after throwing ;
- two nuts (9, 10) hold each pair of cups (3, 4), (5, 6) one against the other enable a variation of their pressure, hence an adjustment of the tension which is communicated to the thread.
2. Device according to claim 1, characterized in that the central cylindrical track (11) is constituted by a part interposed between the two hubs (7, 8) and is held in position by screws (12, 13), the drive through the driving shaft (1) being transmitted via a joint (14), said track (11) having a diameter D which is greater than the outer diameter d1 of the cups (3, 4), (5, 6) and comprising two peripheral flanges for supporting the thread or threads during the throwing operation.
3. Device as claimed in claim 1, characterized in that the central track (11) is formed in the hub proper, forming an integral part thereof, and its outer diameter D is less than the diameter d2 of the lateral rims of the cups (3, 4), (5, 6), thus ensuring the positioning and support of the thread or threads when these are in contact with said central track (11) and acting as a ramp for transferring the thread or threads between the . cups (3, 4), (5, 6) after the throwing operation.
4. Device according one of the claims 1 to 3, characterized in that it is possible with said device to treat two threads in two adjacent positions, the central cylindrical track (11) being used for throwing the thread, and each thread being pushed back on the two side tracks constituted by the pairs of cups (3, 4), (5, 6) after the start of the operation.
5. Device according one of the claims 1 to 3, characterized in that it is used for carrying out two successive slackening operations on the path of the one thread.
EP86420150A 1985-06-11 1986-06-05 Device for regulating the tension of a thread during the various transformations it undergoes in the course of its manufacture Expired EP0208628B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8508987A FR2583028B1 (en) 1985-06-11 1985-06-11 DEVICE FOR ADJUSTING THE TENSION OF A WIRE DURING DIFFERENT PROCESSING OPERATIONS WHICH IT UNDERGOES DURING ITS MANUFACTURE.
FR8508987 1985-06-11

Publications (2)

Publication Number Publication Date
EP0208628A1 EP0208628A1 (en) 1987-01-14
EP0208628B1 true EP0208628B1 (en) 1988-09-07

Family

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EP86420150A Expired EP0208628B1 (en) 1985-06-11 1986-06-05 Device for regulating the tension of a thread during the various transformations it undergoes in the course of its manufacture

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US (1) US4693068A (en)
EP (1) EP0208628B1 (en)
DE (1) DE3660671D1 (en)
ES (1) ES8705334A1 (en)
FR (1) FR2583028B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9206600U1 (en) * 1992-05-18 1992-10-22 Schouten, Petrus Coenradus, Amsterdam Thread tensioner
US5854713A (en) * 1992-11-30 1998-12-29 Mitsubishi Denki Kabushiki Kaisha Reflection type angle of view transforming optical apparatus
DE19720795A1 (en) * 1997-05-16 1998-11-19 Sipra Patent Beteiligung Thread brake and textile machine equipped with it and thread delivery device
US9382645B2 (en) 2011-06-16 2016-07-05 American Linc, Llc Overfeed roller assembly, textile machine, and method of adjusting tension in a running yarn
DE102018005732A1 (en) * 2018-07-20 2020-01-23 Saurer Technologies GmbH & Co. KG Thread tension influencing device for a twisting or cabling machine
CN110424077B (en) * 2019-07-26 2020-06-23 江苏华茂自动化设备有限公司 Spinning frame spindle disc structure with damping effect

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US2177039A (en) * 1937-03-10 1939-10-24 John C Houck Thread throwing machine and the like
DE1510503A1 (en) * 1964-11-05 1970-04-30 Carlo Degli Antoni Twisting, thread thickening and winding machine, especially for acrylic threads
US3359716A (en) * 1965-02-23 1967-12-26 Deering Milliken Res Corp Method and apparatus to equalize tension in two or more strands
DE2316331C2 (en) * 1973-04-02 1975-03-13 Palitex Project-Company Gmbh, 4150 Krefeld Two-for-one twisting spindle with a vertically pivoting twisting wing
FR2268884A1 (en) * 1974-04-26 1975-11-21 Bourgeas Fougeirol Atelier Con Tensioning device for yarn winding comprises two plates - between which yarn passes and which are rotated by contact with common drive shaft
FR2430991A1 (en) * 1978-07-12 1980-02-08 Asa Sa Yarn processing machine - having a double twist spindle, heating means and winding package, with minimum spatial requirements
FR2439833A1 (en) * 1978-10-25 1980-05-23 Verdol Sa WIRE DELIVERY DEVICE AND MECHANISM COMPRISING SUCH A DEVICE
US4462557A (en) * 1982-10-18 1984-07-31 Milliken Research Corporation Spring biased electromagnetically controlled tension control
FR2565261B1 (en) * 1984-06-05 1987-05-15 Verdol Sa PROCESS FOR THE PRODUCTION OF HIGHLY REGULAR CABLES THREADS AND DEVICE FOR ITS IMPLEMENTATION

Also Published As

Publication number Publication date
US4693068A (en) 1987-09-15
EP0208628A1 (en) 1987-01-14
FR2583028B1 (en) 1987-07-31
ES8705334A1 (en) 1987-05-01
ES555952A0 (en) 1987-05-01
DE3660671D1 (en) 1988-10-13
FR2583028A1 (en) 1986-12-12

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