EP0756290A1 - Stranding station for alternate or SZ stranding machine - Google Patents

Stranding station for alternate or SZ stranding machine Download PDF

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Publication number
EP0756290A1
EP0756290A1 EP96111416A EP96111416A EP0756290A1 EP 0756290 A1 EP0756290 A1 EP 0756290A1 EP 96111416 A EP96111416 A EP 96111416A EP 96111416 A EP96111416 A EP 96111416A EP 0756290 A1 EP0756290 A1 EP 0756290A1
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EP
European Patent Office
Prior art keywords
wiring
accumulation
station according
support shaft
strands
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96111416A
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German (de)
French (fr)
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EP0756290B1 (en
Inventor
Bruno Buluschek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swisscab SA
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Kertscher E SA
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Publication date
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Publication of EP0756290A1 publication Critical patent/EP0756290A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/02—Stranding-up
    • H01B13/0235—Stranding-up by a twisting device situated between a pay-off device and a take-up device
    • H01B13/0257—Stranding-up by a twisting device situated between a pay-off device and a take-up device being a perforated disc

Definitions

  • the invention relates to a cabling station for an alternating cabling machine intended for the production of alternating multi-strand or also so-called SZ cables. More particularly, the invention relates to such a station comprising an accumulator device having a simple and inexpensive construction and whose rotational masses are less significant than that of the accumulator devices of wiring stations of the prior art.
  • SZ wiring machine in which strands of wire are cut from stationary coils on an SZ wiring station in which they are alternately twisted in two opposite directions and then passed through a wiring die.
  • the strands of wire thus wired are then wound on a take-up spool also fixed after the twist has been fixed, for example, with the help of a ribbon or by drowning the cable in a plastic material.
  • the wiring station comprises in particular an accumulator device disposed between a stationary guide plate traversed by the strands of wire, which is located upstream relative to the direction of travel of the cable, and a wiring disc also traversed by the strands of wire and rotated alternately in opposite directions.
  • the function of the accumulator device is to ensure the regular and rapid advance of the strands of wire despite the alternating helical twists imposed by the wiring disc.
  • the accumulator device generally comprises a plurality of accumulation discs comprising guide holes distributed regularly over their circumference and through which the strands of wire pass. These discs, mounted free to rotate on a common support shaft between the stationary guide plate and the wiring disc which is itself mounted free to rotate on this shaft, are rotated on the support shaft alternately in opposite directions in connection with the drive of the wiring disc.
  • the drive of the wiring disc is carried out by a belt mounted respectively on the periphery of the wiring disc and on a pulley secured to a secondary drive shaft which is driven by a motor capable of performing reversals of direction of rotation at high speed.
  • the accumulation discs are in turn rotated in a similar manner to the wiring disc, by belts and pulleys integral with the secondary drive shaft.
  • the gear ratios between the accumulation discs are such that their rotational speeds decrease from the wiring disc to the stationary guide plate.
  • This type of accumulator device has the main drawback of comprising a large number of moving parts.
  • speed of travel of the strands of wire in the accumulator device, and consequently the speed of production of cables are linked to the maximum speed of reversals of direction of rotation of the accumulation discs, it is easily understood that the speed of Cable production is quickly limited by the number and importance of the rotating masses attached to the motor shaft.
  • the main object of the invention is therefore to remedy the abovementioned drawbacks of the prior art by providing a wiring station for a wiring machine comprising an accumulator device which is simple, compact and economical and which in particular makes it possible to increase the speed of reversing the direction of rotation of the accumulation discs and thereby the wiring speed.
  • a wiring station comprising means for driving accumulation elements of simple, economical construction, compact and which by their lightness favor high reversal speeds of direction of rotation of the elements d 'accumulation.
  • these drive means consist in mounting the free accumulation elements in rotation and with a certain axial clearance on the support shaft and in associating each of these elements with an intermediate element integral with the support shaft and disposed downstream of each accumulation element with respect to the direction of travel of the strands of wire.
  • these strands of wire to be wired which pass through the accumulation elements are subjected to a certain tension due in particular to the traction of winding of the cable, these strands of wire are almost in permanent contact with the accumulation elements and the friction of the strands of wire on the elements of accumulation generates a force having an axial component which applies each element of accumulation against the intermediate element which is associated with it.
  • Each accumulation element free to rotate on the support shaft, is then driven by a friction force by its associated intermediate element which is integral with the support shaft. It is therefore easily understood that the driving torque of the accumulation elements increases with the magnitude of the axial component of the friction force.
  • the absolute value of the drive torque depends, on the one hand, on the coefficient of friction between the materials forming the accumulation elements and the intermediate elements and, on the other part, of the radius defined by the distance separating the friction surface from the axis of rotation of the support shaft.
  • the accumulation element has the general shape of a disc and the intermediate element has the general shape of a ring extending at one of its ends by a flange having on its face the drive surface.
  • the flange has at its periphery an annular flange extending axially, the front face of this flange forming the drive surface.
  • FIG. 1 we see a schematic representation of an installation I for manufacturing cables in alternating wiring or SZ wiring comprising a wiring station designated by the general reference numeral 1.
  • the installation I comprises, upstream of the wiring station 1, seven supply coils 2a-2g in which are respectively wound individual wire strands 4a-4g. These coils supply, in a conventional manner, the individual strands of wire to the wiring station 1 in which the individual strands of wire 4a-4g are wired or joined together by twisting in alternating directions by wiring means 6.
  • support and guide means 8 of the unitary strands of wire are arranged between the supply coils 2a-2g and the wiring station 1.
  • the support means 8 comprise pulleys with multiple grooves respectively deflection 10 and support 12 mounted idly on a support foot 14, through which the strands of wires 4a-4g pass before entering the wiring station 1 of the invention by means of stationary guide means 16.
  • the cable 20 leaving the extrusion station 18 then passes through a cooling station 22 before being introduced, for drying, into a station 24 and into traction means 26 in which it is pulled and directed to a receiving station 28 in which it is conventionally wound on a take-up reel 30.
  • the various means or stations which have just been briefly described, in particular the support means 8, the wiring station 1, the extrusion station 18, the cooling means 22, the drying means 24, the traction means 26 and the receiving station 28, are located substantially on an axis AA ′ (FIG. 2), the general running of the cable being from the left of FIG. 1 to the right of it, or even in the direction A- AT'.
  • the wiring station 1 which comprises accumulation means 32 disposed between the fixed guide means 16 and the wiring means 6, all of these means being traversed by the individual wire strands 4a-4g to be wired which are then joined by a conventional FC wiring die disposed downstream of the wiring means 6 relative to the direction of travel of the cable.
  • the guide means 16 are conventionally formed by a plate 34 pierced with guide holes 36 distributed regularly along a circle.
  • the wiring means 6 are also produced in a conventional manner and comprise a wiring disc 38, containing guide holes 40 also distributed regularly along a circle.
  • the disc 38 is rotated alternately in opposite directions in a bearing 42 mounted on a support plate 44 extending substantially parallel to the plate 34.
  • the drive is carried out using a belt 46 engaged on the wiring disc 38, on the one hand, and on a pulley 48 of an engine M on the other hand.
  • the rotation of the motor M is controlled by a central control station (not shown) which determines the speed of rotation of the wiring disc 38 and its frequency of reversal of direction, and which therefore determines the angular distance traveled by this disc 38 before each inversion.
  • the accumulation means 32 comprise a plurality of identical accumulation elements 50, in the form of discs and each comprising guide holes 52 distributed regularly over a circle.
  • the number of holes in the guide means 16, in the wiring means 6 and in each of the accumulation discs 50 is determined by the number of strands of unitary wire 4a-4g coming from the supply coils 2a-2g which go through these different means. In the example illustrated, this number of holes is equal to seven.
  • the holes 40 and 52 can, according to variant embodiments, be replaced by notches which open at the periphery of the discs 38 and 50 or by any opening having walls making it possible to drive the strands in rotation. single thread.
  • the holes 36 they can be replaced by such equivalent means as soon as these means perform a function of guiding the strands of son.
  • the accumulation discs 50 are mounted free in rotation and free axially, preferably at equal distance from each other, on a support shaft 54 which extends between the guide means 16 and the wiring means 6.
  • the diameter of the support shaft 54 is executed with a tolerance h7
  • the diameter of the passage 56 (FIGS. 3 and 4) formed in the accumulation discs 50 for the passage of this shaft will have the same diameter executed with the tolerance F7.
  • the accumulation discs 50 will thus be easily movable axially on the shaft 54.
  • the support shaft 54 is mounted rotating in a bearing 58 formed in the plate 34, and passes through the wiring disc 38 of which it is integral.
  • Support shaft 54 and wiring disc 38 are therefore, according to the invention, driven simultaneously in alternating rotation in opposite directions by the motor M at the same speed of rotation.
  • the shaft 54 is in the form of a tube in which the core (not shown) of a cable to be produced can pass before the strands of wire are cabled around it.
  • the support shaft 54 can be a solid shaft in the case where the cable to be manufactured does not include a core.
  • the storage means 32 further comprise means for driving the storage discs 50 in opposite directions in opposite directions with the alternating rotation of the wiring disc 38.
  • These rotary drive means comprise, according to the invention, an intermediate element 60 or drive element made integral in rotation and axially with the support shaft 54 by any appropriate means and associated with each accumulation disc 50.
  • Each drive element 60 is disposed on the shaft 54 downstream of the accumulation disc 50 with which it is associated, with respect to the direction of travel of the strands of wire.
  • the drive elements 60 each comprise a so-called drive surface 62 (FIG. 3) by which they act on a part of the front surface 64 of the discs 50 to drive them in rotation by friction.
  • the angular distances that the accumulation disks 50 respectively travel before reversing with respect to the angular distance that the wiring disk 38 travels can thus be chosen as a function of the desired friction drive torque, to be transmitted to each accumulation disk 50 by the drive element 60 associated therewith.
  • This drive torque can be chosen as a function, on the one hand, of the coefficient of friction existing between the materials of the parts in friction contact of the accumulation discs 50 and the drive elements 60, and / or, on the other hand, by the distance R (FIG. 3) separating the drive surface 62 from the axis of rotation Ar of the support shaft 54.
  • the friction drive torques of the accumulation discs 50 are such that they increase from the accumulation disc 50 closest to the guide means 16 to the disc closest to the means wiring 6.
  • the intermediate or drive elements 60 have the general shape of a ring comprising a body 66 made integral with the support shaft 54, for example by a weld bead 68 or any other equivalent means such a screw nut system to make the system removable, which is extended at one of its ends by a flange 70 which extends opposite the front face 64 of the accumulation disc 50 to which the drive element 60 is associated.
  • the flange 70 has at its periphery an annular flange 72 which extends axially and the front face of which forms the drive surface 62.
  • the drive surface 62 therefore has an annular shape. It is understood that the shape and dimensions of this surface can be adapted by a person skilled in the art depending on the materials used and / or the desired drive torques.
  • the accumulation discs 50 and the drive elements 60 are respectively made of light alloys, for example aluminum alloy, and preferably include recesses (not shown) making it possible to lighten them as much as possible. and thus reduce the rotating masses.
  • the accumulation discs 50 and the drive elements 60 can be made of injected plastic material in which are provided metal inserts at the points which are in frictional contact with other elements.
  • the discs 50 may comprise a ring appearing in their front face 64 facing the drive surface 62 of the elements 60 and intended to come into frictional contact with the drive surface 62, sockets in the holes of passage 52, and a ring for mounting the disc 50 on the support shaft 54.
  • the drive element 60 may, for its part, comprise a ring-shaped insert placed in the flange 72 and whose surface front forms the drive surface 62.
  • the accumulation means 32 shown in this figure are distinguished from those previously described by the fact that they further comprise a device 74 associated with each accumulation disc 50.
  • This device 74 makes it possible to apply the accumulation disc 50 against the drive surface 62 of the drive member 60 with which it is associated. More specifically, this device 74 allows, in addition to the frictional forces generated by the movement of the strands of wire 4a-4g in the through holes 52, to permanently apply an axial force on the accumulation disc 50.
  • the latter is rotated by the drive element 60 whatever the orientation of the strands of wire 4a-4g passing through the through holes 52 and in particular when their orientation is parallel to the wiring axis and that the component of the friction forces in this direction is small.
  • the device 74 is integral in rotation with the shaft 54 and is arranged upstream of the accumulation disc 50 relative to the direction of travel of the strands of wire.
  • the device 74 comprises a circular cover having a bottom 76 crossed by the support shaft 54, and an annular wall 78 extending parallel to the shaft 54 and at a distance therefrom.
  • the outer surface of the shaft 54, the bottom 76 and the annular wall 78 thus define a housing 80 in which are pre-stressed springs 82 and a friction washer 84 intended to come into contact with the front face opposite to the face 64 accumulation disk 50.
  • a person skilled in the art can easily provide, according to an alternative embodiment, such a device 74 with means for adjusting the preload of the springs 82, for example using a screw-nut system making it possible to adjust the position. of the cover along the support shaft 56, as well as to disassemble the device.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ropes Or Cables (AREA)
  • Adornments (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Structure Of Telephone Exchanges (AREA)

Abstract

Individual strands pass through equally spaced peripheral holes (opt., notches) in a stationary guide-plate (34), a succession of transitional disks (50) and a motor-driven (M) laying-up disk (38), before combining as cable at the draw-plate (FC) for finishing treatments. Transition disks are coupled to a shaft (54), connected to the driven disk (38), running in a guide-plate bearing (58), by friction clutch-plates (60) fixed on the shaft. The shaft is opt. hollow to feed in any core component. Clutch pressure is derived from strand tensions, frictionally transmitted from the peripheral holes, or from springs. By adjusting friction surface areas, or spring pressures, torque transmitted to the disks steadily increases as the driven disk is approached.

Description

L'invention concerne une station de câblage pour machine de câblage alterné destinée à la production de câbles multibrins alterné ou aussi dits de type SZ. Plus particulièrement l'invention concerne une telle station comprenant un dispositif accumulateur ayant une construction simple et peu coûteuse et dont les masses en rotation sont moins importantes que celles des dispositifs accumulateurs des stations de câblage de l'art antérieur.The invention relates to a cabling station for an alternating cabling machine intended for the production of alternating multi-strand or also so-called SZ cables. More particularly, the invention relates to such a station comprising an accumulator device having a simple and inexpensive construction and whose rotational masses are less significant than that of the accumulator devices of wiring stations of the prior art.

Il est connu, pour conférer une plus grande souplesse à un faisceau de brins de fil ou de câbles de tous types (fil électrique, fibre optique ou analogue), de câbler ces brins de fil en leur induisant alternativement une torsion en hélice dans deux sens opposés, respectivement le sens S et le sens Z.It is known, to give greater flexibility to a bundle of strands of wire or cables of all types (electric wire, optical fiber or the like), to wire these strands of wire by alternately inducing them in a twist in two directions opposite, respectively the S direction and the Z direction.

Ceci est réalisé à l'aide d'une machine de câblage dite machine de câblage SZ dans laquelle des brins de fil sont débités à partir de bobines stationnaires sur une station de câblage SZ dans laquelle ils sont alternativement tordus dans deux sens opposés et passés ensuite à travers une filière de câblage. Les brins de fil ainsi câblés sont alors enroulés sur une bobine réceptrice également fixe après que la torsion ait été fixée, par exemple, à f'aide d'un ruban ou encore en noyant le câble dans une matière plastique.This is achieved using a wiring machine called SZ wiring machine in which strands of wire are cut from stationary coils on an SZ wiring station in which they are alternately twisted in two opposite directions and then passed through a wiring die. The strands of wire thus wired are then wound on a take-up spool also fixed after the twist has been fixed, for example, with the help of a ribbon or by drowning the cable in a plastic material.

La station de câblage comprend notamment un dispositif accumulateur disposé entre une plaque de guidage stationnaire traversée par les brins de fil, qui est située en amont par rapport au sens de défilement du câble, et un disque de câblage également traversé par les brins de fil et entraîné en rotation alternativement dans des sens opposés. Le dispositif accumulateur a pour fonction d'assurer l'avance régulière et rapide des brins de fil en dépit des torsions alternatives en hélice de ces derniers imposées parle disque de câblage.The wiring station comprises in particular an accumulator device disposed between a stationary guide plate traversed by the strands of wire, which is located upstream relative to the direction of travel of the cable, and a wiring disc also traversed by the strands of wire and rotated alternately in opposite directions. The function of the accumulator device is to ensure the regular and rapid advance of the strands of wire despite the alternating helical twists imposed by the wiring disc.

Le dispositif accumulateur comprend généralement une pluralité de disques d'accumulation comprenant des trous de guidage répartis régulièrement sur leur circonférence et à travers lesquels passent les brins de fil. Ces disques, montés libres à rotation sur un arbre de support commun entre la plaque de guidage stationnaire et le disque de câblage qui est lui-même monté libre à rotation sur cet arbre, sont entraînés en rotation sur l'arbre de support alternativement dans des sens opposés en liaison avec l'entraînement du disque de câblage.The accumulator device generally comprises a plurality of accumulation discs comprising guide holes distributed regularly over their circumference and through which the strands of wire pass. These discs, mounted free to rotate on a common support shaft between the stationary guide plate and the wiring disc which is itself mounted free to rotate on this shaft, are rotated on the support shaft alternately in opposite directions in connection with the drive of the wiring disc.

A titre d'exemple, l'entraînement du disque de câblage est réalisé par une courroie montée respectivement sur la périphérie du disque de câblage et sur une poulie solidaire d'un arbre d'entraînement secondaire qui est entraîné par un moteur capable d'effectuer des inversions de sens de rotation à grande vitesse.By way of example, the drive of the wiring disc is carried out by a belt mounted respectively on the periphery of the wiring disc and on a pulley secured to a secondary drive shaft which is driven by a motor capable of performing reversals of direction of rotation at high speed.

Les disques d'accumulation sont quant à eux entraînés en rotation de façon analogue au disque de câblage, par des courroies et des poulies solidaires de l'arbre d'entraînement secondaire. Toutefois, les rapports de démultiplication entre les disques d'accumulation sont tels que leurs vitesses de rotation diminuent du disque de câblage vers la plaque de guidage stationnaire.The accumulation discs are in turn rotated in a similar manner to the wiring disc, by belts and pulleys integral with the secondary drive shaft. However, the gear ratios between the accumulation discs are such that their rotational speeds decrease from the wiring disc to the stationary guide plate.

Ce type de dispositif accumulateur présente l'inconvénient principal de comprendre un grand nombre de pièces en mouvement. Or comme la vitesse de défilement des brins de fil dans le dispositif accumulateur, et par conséquent la vitesse de production de câbles, sont liées à la vitesse maximale des inversions de sens de rotation des disques d'accumulation, on comprend aisément que la vitesse de production de câbles est vite limitée par le nombre et l'importance des masses en rotation solidaires de l'arbre moteur.This type of accumulator device has the main drawback of comprising a large number of moving parts. However, as the speed of travel of the strands of wire in the accumulator device, and consequently the speed of production of cables, are linked to the maximum speed of reversals of direction of rotation of the accumulation discs, it is easily understood that the speed of Cable production is quickly limited by the number and importance of the rotating masses attached to the motor shaft.

Par ailleurs ce grand nombre de pièces a également une influence défavorable sur le coût et l'encombrement général des machines de câblage.Furthermore, this large number of parts also has an unfavorable influence on the cost and the overall size of the wiring machines.

L'invention a donc pour but principal de remédier aux inconvénients susmentionnés de l'art antérieur en fournissant une station de câblage pour machine de câblage comprenant un dispositif accumulateur qui soit simple, compact et économique et qui permette notamment d'augmenter la vitesse d'inversion de sens de rotation des disques d'accumulation et par là même la vitesse de câblage.The main object of the invention is therefore to remedy the abovementioned drawbacks of the prior art by providing a wiring station for a wiring machine comprising an accumulator device which is simple, compact and economical and which in particular makes it possible to increase the speed of reversing the direction of rotation of the accumulation discs and thereby the wiring speed.

A cet effet, l'invention a pour objet une station de câblage pour machine de câblage SZ destinée à assembler en hélice une pluralité de brins de fil unitaires, ladite station de câblage comprenant:

  • des moyens de guidage fixes des brins de fil,
  • des moyens de câblage comprenant notamment un élément de câblage mobile en rotation,
  • des moyens d'accumulation, disposés entre lesdits moyens de guidage et lesdits moyens de câblage, comprenant au moins un élément d'accumulation, lesdits moyens de guidage, lesdits moyens de câblage et lesdits moyens d'accumulation étant chacun traversés parlesdits brins de fil,
  • un arbre de support s'étendant entre les moyens de guidage et les moyens de câblage, ledit arbre de support portant lesdits moyens d'accumulation,
  • des moyens pour entraîner en rotation ledit élément de câblage alternativement dans des sens opposés, et
  • des moyens pour entraîner en rotation ledit élément d'accumulation en concomitance avec ledit élément de câblage,
    caractérisée en ce que ledit arbre de support est entraîné en rotation en liaison avec l'élément de câblage, en ce que l'élément d'accumulation est monté libre à rotation et libre axialement sur ledit arbre de support, en ce les moyens d'entraînement en rotation de l'élément d'accumulation comprennent un élément intermédiaire solidaire de l'arbre de support, disposé en aval de l'élément d'accumulation par rapport au sens de défilement des brins de fil, et
    en ce que l'élément d'accumulation peut être appliqué contre ladite surface d'entraînement et être ainsi entraîné en rotation par frottement par cette surface sur l'élément d'accumulation.
To this end, the subject of the invention is a wiring station for an SZ wiring machine intended for helically assembling a plurality of unitary strands of wire, said wiring station comprising:
  • fixed guide means for the strands of wire,
  • wiring means comprising in particular a movable wiring element in rotation,
  • accumulation means, disposed between said guide means and said wiring means, comprising at least one accumulation element, said guide means, said wiring means and said accumulation means each being traversed by said strands of wire,
  • a support shaft extending between the guide means and the wiring means, said support shaft carrying said accumulation means,
  • means for rotating said wiring element alternately in opposite directions, and
  • means for rotating said accumulation element in rotation with said wiring element,
    characterized in that said support shaft is rotated in connection with the wiring element, in that the storage element is mounted free to rotate and free axially on said support shaft, in this the means of rotation drive of the accumulation element comprise an intermediate element integral with the support shaft, arranged downstream of the accumulation element with respect to the direction of travel of the strands of wire, and
    in that the accumulation element can be applied against said drive surface and thus be rotated by friction by this surface on the accumulation element.

Grâce à ces caractéristiques, on réalise une station de câblage comprenant des moyens d'entraînement des éléments d'accumulation de construction simple, économique, peu encombrante et qui de par leur légèreté favorisent des vitesses d'inversion élevées de sens de rotation des éléments d'accumulation.Thanks to these characteristics, a wiring station is produced comprising means for driving accumulation elements of simple, economical construction, compact and which by their lightness favor high reversal speeds of direction of rotation of the elements d 'accumulation.

En effet, ces moyens d'entraînement consistent à monter les éléments d'accumulation libres en rotation et avec un certain jeu axial sur l'arbre de support et à associer chacun de ces éléments à un élément intermédiaire solidaire de l'arbre de support et disposé en aval de chaque élément d'accumulation par rapport au sens de défilement des brins de fil. Comme les brins de fil à câbler qui traversent les éléments d'accumulation sont soumis à une certaine tension due notamment à la traction d'enroulement du câble, ces brins de fil sont quasiment en contact permanent avec les éléments d'accumulation et le frottement des brins de fil sur les éléments d'accumulation engendre une force ayant une composante axiale qui applique chaque élément d'accumulation contre l'élément intermédiaire qui lui est associé. Chaque élément d'accumulation, libre en rotation sur l'arbre de support, est alors entraîné par une force de frottement par son élément intermédiaire associé qui est solidaire de l'arbre de support. On comprend donc aisément que le couple d'entraînement des éléments d'accumulation augmente avec la grandeur de la composante axiale de la force de frottement. Bien entendu, la valeur absolue du couple d'entraînement dépend, d'une part, du coefficient de frottement entre les matériaux formant les éléments d'accumulation et les éléments intermédiaires et, d'autre part, du rayon défini par la distance séparant la surface de frottement de l'axe de rotation de l'arbre support.In fact, these drive means consist in mounting the free accumulation elements in rotation and with a certain axial clearance on the support shaft and in associating each of these elements with an intermediate element integral with the support shaft and disposed downstream of each accumulation element with respect to the direction of travel of the strands of wire. As the strands of wire to be wired which pass through the accumulation elements are subjected to a certain tension due in particular to the traction of winding of the cable, these strands of wire are almost in permanent contact with the accumulation elements and the friction of the strands of wire on the elements of accumulation generates a force having an axial component which applies each element of accumulation against the intermediate element which is associated with it. Each accumulation element, free to rotate on the support shaft, is then driven by a friction force by its associated intermediate element which is integral with the support shaft. It is therefore easily understood that the driving torque of the accumulation elements increases with the magnitude of the axial component of the friction force. Of course, the absolute value of the drive torque depends, on the one hand, on the coefficient of friction between the materials forming the accumulation elements and the intermediate elements and, on the other part, of the radius defined by the distance separating the friction surface from the axis of rotation of the support shaft.

On profite ainsi de façon avantageuse des forces de frottement inhérentes au fonctionnement de la station et mises en jeu lors du défilement des brins de fil à travers les éléments d'accumulation.This advantageously takes advantage of the frictional forces inherent in the operation of the station and brought into play when the strands of wire travel through the accumulation elements.

Selon une caractéristique préférée de l'invention, l'élément d'accumulation a la forme générale d'un disque et l'élément intermédiaire a la forme générale d'une bague se prolongeant à une de ses extrémités par un flasque comportant sur sa face frontale la surface d'entraînement.According to a preferred characteristic of the invention, the accumulation element has the general shape of a disc and the intermediate element has the general shape of a ring extending at one of its ends by a flange having on its face the drive surface.

Selon une autre caractéristique préférée de l'invention, le flasque comporte à sa périphérie un rebord annulaire s'étendant axialement, la face frontale de ce rebord formant la surface d'entraînement.According to another preferred characteristic of the invention, the flange has at its periphery an annular flange extending axially, the front face of this flange forming the drive surface.

D'autres avantages et caractéristiques de l'invention apparaîtront à la lecture de la description détaillée qui suit d'exemples de réalisation donnés à titre illustratif et non limitatif, en liaison avec le dessin annexé dans lequel :

  • la figure 1 est une vue d'ensemble schématique d'une installation de fabrication de câbles incorporant une station de câblage selon l'invention;
  • la figure 2 est une vue en perpective de la station de câblage selon l'invention;
  • la figure 3 est une vue en coupe montrant un élément d'accumulation et ses moyens d'entraînement selon un mode de réalisation de l'invention; et
  • la figure 4 est une vue en coupe montrant un élément d'accumulation et ses moyens d'entraînement selon une variante de réalisation de l'invention;
Other advantages and characteristics of the invention will appear on reading the following detailed description of exemplary embodiments given by way of illustration and not limitation, in conjunction with the appended drawing in which:
  • Figure 1 is a schematic overview of a cable manufacturing installation incorporating a wiring station according to the invention;
  • Figure 2 is a perspective view of the wiring station according to the invention;
  • Figure 3 is a sectional view showing an accumulation element and its drive means according to an embodiment of the invention; and
  • Figure 4 is a sectional view showing an accumulation element and its drive means according to an alternative embodiment of the invention;

La description de l'invention va être faite dans le cadre d'une application à la fabrication d'un câble électrique en câblage alterné ou câblage SZ à sept brins unitaires, chacun des brins étant formé d'un fil conducteur isolé. Toutefois, il va de soi que l'invention n'est nullement limitée à cette application et que la nature et le nombre des brins de fil unitaires peuvent varier en fonction du câble souhaité. L'invention pourra par exemple s'appliquer tout aussi avantageusement à la fabrication de ce type de câbles électriques comprenant une âme et formés à partir de fils conducteurs non isolés, ou encore à la fabrication de câbles optiques à partir de brins de fil formés par des fibres optiques.The description of the invention will be made in the context of an application to the manufacture of an electrical cable in alternating wiring or SZ wiring with seven unitary strands, each of the strands being formed of an insulated conducting wire. However, it goes without saying that the invention is in no way limited to this application and that the nature and the number of unitary strands of wire can vary depending on the desired cable. The invention may for example apply equally advantageously to the manufacture of this type of electric cables comprising a core and formed from non-insulated conductive wires, or even to the manufacture of optical cables from strands of wire formed by optical fibers.

En se référant à la figure 1, on voit une représentation schématique d'une installation I de fabrication de câbles en câblage alterné ou câblage SZ comprenant une station de câblage désignée par la référence numérique générale 1.Referring to FIG. 1, we see a schematic representation of an installation I for manufacturing cables in alternating wiring or SZ wiring comprising a wiring station designated by the general reference numeral 1.

Selon la forme de réalisation représentée à la figure 1, l'installation I comprend, en amont de la station de câblage 1, sept bobines débitrices 2a-2g où sont enroulés respectivement des brins de fil unitaires 4a-4g. Ces bobines fournissent, de manière classique, les brins de fil unitaires à la station de câblage 1 dans laquelle les brins de fil unitaires 4a-4g sont câblés ou réunis ensemble par torsion dans des sens alternés par des moyens de câblage 6.According to the embodiment shown in Figure 1, the installation I comprises, upstream of the wiring station 1, seven supply coils 2a-2g in which are respectively wound individual wire strands 4a-4g. These coils supply, in a conventional manner, the individual strands of wire to the wiring station 1 in which the individual strands of wire 4a-4g are wired or joined together by twisting in alternating directions by wiring means 6.

De manière classique, des moyens de support et de guidage 8 des brins de fil unitaires sont disposées entre les bobines débitrices 2a-2g et la station de câblage 1. Dans l'exemple représenté, les moyens de support 8 comprennent des poulies à gorges multiples respectivement de renvoi 10 et de support 12 montées folles sur un pied de support 14, dans lesquelles passent les brins de fils 4a-4g avant d'entrer dans la station de câblage 1 de l'invention par l'intermédiaire de moyens de guidage stationnaires 16.Conventionally, support and guide means 8 of the unitary strands of wire are arranged between the supply coils 2a-2g and the wiring station 1. In the example shown, the support means 8 comprise pulleys with multiple grooves respectively deflection 10 and support 12 mounted idly on a support foot 14, through which the strands of wires 4a-4g pass before entering the wiring station 1 of the invention by means of stationary guide means 16.

Les brins de fil unitaires câblés ou réunis par torsion, qui sortent de la station de câblage 1 passent alors dans une station d'extrusion 18 dans laquelle ils sont recouverts d'une gaine pour former un câble 20.The strands of single wire cabled or joined by twist, which leave the cabling station 1 then pass into an extrusion station 18 in which they are covered with a sheath to form a cable 20.

Le câble 20 sortant de la station d'extrusion 18 passe ensuite dans une station de refroidissement 22 avant d'être introduit, pour séchage, dans une station 24 et dans des moyens de traction 26 dans lesquels il est tiré et dirigé vers un poste de réception 28 dans lequel il est bobiné de façon classique sur une bobine réceptrice 30.The cable 20 leaving the extrusion station 18 then passes through a cooling station 22 before being introduced, for drying, into a station 24 and into traction means 26 in which it is pulled and directed to a receiving station 28 in which it is conventionally wound on a take-up reel 30.

Les différents moyens ou stations qui viennent d'être brièvement décrits, en particulier les moyens de support 8, la station de câblage 1, la station d'extrusion 18, les moyens de refroidissement 22, les moyens de séchage 24, les moyens de traction 26 et le poste de réception 28, sont situés sensiblement sur un axe A-A' (figure 2), le défilement général du câble se faisant de la gauche de la figure 1 vers la droite de celle-ci, ou encore dans le sens A-A'.The various means or stations which have just been briefly described, in particular the support means 8, the wiring station 1, the extrusion station 18, the cooling means 22, the drying means 24, the traction means 26 and the receiving station 28, are located substantially on an axis AA ′ (FIG. 2), the general running of the cable being from the left of FIG. 1 to the right of it, or even in the direction A- AT'.

En se référant maintenant également à la figure 2, on voit la station de câblage 1 selon l'invention qui comprend des moyens d'accumulation 32 disposés entre les moyens de guidage fixes 16 et les moyens de câblage 6, l'ensemble de ces moyens étant traversé par les brins de fil unitaires 4a-4g à câbler qui sont ensuite réunis par une filière de câblage FC classique disposée en aval des moyens de câblage 6 par rapport au sens de défilement du câble.Referring now also to FIG. 2, we see the wiring station 1 according to the invention which comprises accumulation means 32 disposed between the fixed guide means 16 and the wiring means 6, all of these means being traversed by the individual wire strands 4a-4g to be wired which are then joined by a conventional FC wiring die disposed downstream of the wiring means 6 relative to the direction of travel of the cable.

Les moyens de guidage 16 sont formés de façon classique par une plaque 34 percée de trous de guidage 36 répartis régulièrement le long d'un cercle.The guide means 16 are conventionally formed by a plate 34 pierced with guide holes 36 distributed regularly along a circle.

Les moyens de câblage 6 sont également réalisés de façon classique et comprennent un disque de câblage 38, contenant des trous de guidage 40 également répartis régulièrement le long d'un cercle. Le disque 38 est entraîné en rotation alternativement dans des sens opposés dans un palier 42 monté sur une plaque de support 44 s'étendant sensiblement parallèlement à la plaque 34. Dans l'exemple illustré, l'entraînement est réalisé à l'aide d'une courroie 46 en prise sur le disque de câblage 38, d'une part, et sur une poulie 48 d'un moteur M d'autre part. La rotation du moteur M est commandée par un poste de commande central (non représenté) qui détermine la vitesse de rotation du disque de câblage 38 et sa fréquence d'inversion de sens, et qui détermine donc la distance angulaire que parcourt ce disque 38 avant chaque inversion.The wiring means 6 are also produced in a conventional manner and comprise a wiring disc 38, containing guide holes 40 also distributed regularly along a circle. The disc 38 is rotated alternately in opposite directions in a bearing 42 mounted on a support plate 44 extending substantially parallel to the plate 34. In the example illustrated, the drive is carried out using a belt 46 engaged on the wiring disc 38, on the one hand, and on a pulley 48 of an engine M on the other hand. The rotation of the motor M is controlled by a central control station (not shown) which determines the speed of rotation of the wiring disc 38 and its frequency of reversal of direction, and which therefore determines the angular distance traveled by this disc 38 before each inversion.

Les moyens d'accumulation 32 comprennent une pluralité d'éléments d'accumulation 50 identiques, ayant la forme de disques et comprenant chacun des trous de guidage 52 répartis régulièrement sur un cercle.The accumulation means 32 comprise a plurality of identical accumulation elements 50, in the form of discs and each comprising guide holes 52 distributed regularly over a circle.

On notera que le nombre de trous dans les moyens de guidage 16, dans les moyens de câblage 6 et dans chacun des disques d'accumulation 50 est déterminé par le nombre de brins de fil unitaires 4a-4g provenant des bobines débitrices 2a-2g qui traversent ces différents moyens. Dans l'exemple illustré ce nombre de trous est égal à sept.It will be noted that the number of holes in the guide means 16, in the wiring means 6 and in each of the accumulation discs 50 is determined by the number of strands of unitary wire 4a-4g coming from the supply coils 2a-2g which go through these different means. In the example illustrated, this number of holes is equal to seven.

Il va de soi que les trous 40 et 52 peuvent selon des variantes de réalisation être remplacés par des encoches qui s'ouvrent à la périphérie des disques 38 et 50 ou par toute ouverture ayant des parois permettant d'assurer un entraînement en rotation des brins de fil unitaires. En ce qui concerne les trous 36, ils peuvent être remplacés par de tels moyens équivalents dès lors que ces moyens assurent une fonction de guidage des brins de fils.It goes without saying that the holes 40 and 52 can, according to variant embodiments, be replaced by notches which open at the periphery of the discs 38 and 50 or by any opening having walls making it possible to drive the strands in rotation. single thread. As regards the holes 36, they can be replaced by such equivalent means as soon as these means perform a function of guiding the strands of son.

Les disques d'accumulation 50 sont montés libres en rotation et libres axialement, de préférence à égale distance les uns des autres, sur un arbre de support 54 qui s'étend entre les moyens de guidage 16 et les moyens de câblage 6.The accumulation discs 50 are mounted free in rotation and free axially, preferably at equal distance from each other, on a support shaft 54 which extends between the guide means 16 and the wiring means 6.

On notera à ce propos et à titre indicatif que si, selon la norme ISO/VSM 58400, on exécute le diamètre de l'arbre de support 54 avec une tolérance h7, le diamètre du passage 56 (figures 3 et 4) ménagé dans les disques d'accumulation 50 pour le passage de cet arbre aura le même diamètre exécuté avec la tolérance F7. Les disques d'accumulation 50 seront ainsi aisément mobiles axialement sur l'arbre 54.It should be noted in this regard and by way of indication that if, according to ISO / VSM 58400, the diameter of the support shaft 54 is executed with a tolerance h7, the diameter of the passage 56 (FIGS. 3 and 4) formed in the accumulation discs 50 for the passage of this shaft will have the same diameter executed with the tolerance F7. The accumulation discs 50 will thus be easily movable axially on the shaft 54.

Dans l'exemple illustré, l'arbre de support 54 est monté tournant dans un palier 58 ménagé dans la plaque 34, et traverse le disque de câblage 38 duquel il est solidaire. L'arbre de support 54 et le disque de câblage 38 sont donc, selon l'invention, entraînés simultanément en rotation alternative dans des sens opposés par le moteur M à une même vitesse de rotation.In the example illustrated, the support shaft 54 is mounted rotating in a bearing 58 formed in the plate 34, and passes through the wiring disc 38 of which it is integral. Support shaft 54 and wiring disc 38 are therefore, according to the invention, driven simultaneously in alternating rotation in opposite directions by the motor M at the same speed of rotation.

Les raisons pour lesquelles l'arbre de support 54 est entraîné en rotation alors que les disques d'accumulation 50 sont montés libres sur celui-ci apparaîtront ci-après en liaison avec la description des moyens d'entraînement des éléments d'accumulation 50.The reasons for which the support shaft 54 is rotated while the accumulation discs 50 are mounted free on it will appear below in connection with the description of the means for driving the accumulation elements 50.

Dans cet exemple de réalisation, l'arbre 54 se présente sous la forme d'un tube dans lequel l'âme (non représentée) d'un câble à fabriquer peut défiler avant le câblage des brins de fil autour de celle-ci. Bien entendu l'arbre de support 54 peut être un arbre plein dans le cas où le câble à fabriquer ne comporte pas d'âme.In this exemplary embodiment, the shaft 54 is in the form of a tube in which the core (not shown) of a cable to be produced can pass before the strands of wire are cabled around it. Of course the support shaft 54 can be a solid shaft in the case where the cable to be manufactured does not include a core.

Les moyens d'accumulation 32 comprennent en outre des moyens pour entraîner en rotation alternative dans des sens opposés les disques d'accumulation 50 en concomitance avec la rotation alternative du disque de câblage 38.The storage means 32 further comprise means for driving the storage discs 50 in opposite directions in opposite directions with the alternating rotation of the wiring disc 38.

Ces moyens d'entraînement en rotation comprennent, selon l'invention, un élément intermédiaire 60 ou élément d'entraînement rendu solidaire en rotation et axialement de l'arbre de support 54 par tout moyen approprié et associé à chaque disque d'accumulation 50. Chaque élément d'entraînement 60 est disposé sur l'arbre 54 en aval du disque d'accumulation 50 auquel il est associé, par rapport au sens de défilement des brins de fil. Les éléments d'entraînement 60 comprennent chacun une surface 62 dite d'entraînement (figure 3) par laquelle ils agissent sur une partie de la surface frontale 64 des disques 50 pour les entraîner en rotation par frottement.These rotary drive means comprise, according to the invention, an intermediate element 60 or drive element made integral in rotation and axially with the support shaft 54 by any appropriate means and associated with each accumulation disc 50. Each drive element 60 is disposed on the shaft 54 downstream of the accumulation disc 50 with which it is associated, with respect to the direction of travel of the strands of wire. The drive elements 60 each comprise a so-called drive surface 62 (FIG. 3) by which they act on a part of the front surface 64 of the discs 50 to drive them in rotation by friction.

En effet, comme les disques d'accumulation 50 sont montés libres en rotation et libres axialement sur l'arbre 54, les forces de frottement engendrées par le défilement des brins de fil à travers les disques d'accumulation 50, notamment lorsque les brins de fil ne sont pas parallèles à l'axe de défilement du câble (figure 3, brin de fil 4a), comportent une composante axiale qui applique les disques 50 contre la surface de frottement 52 des éléments d'entraînement 60 entraînant ainsi le disque d'accumulation 50 enrotation en liaison avec l'arbre 54. Comme la liaison entre les disques 50 et les éléments d'entraînement 60 n'est pas fixe, la vitesse de rotation des disques d'accumulation 50 est différente de celle de l'arbre 56 et par conséquent de celle du disque de câblage 38. A ces forces de frottement engendrées par les brins de fils s'ajoute des forces de frottement des disques 50 sur l'arbre de support 54 sous l'effet de la gravité.Indeed, as the accumulation discs 50 are mounted free in rotation and axially free on the shaft 54, the friction forces generated by the running of the strands of wire through the accumulation discs 50, in particular when the strands wire are not parallel to the axis of travel of the cable (Figure 3, strand of wire 4a), have an axial component which applies the discs 50 against the friction surface 52 of the elements drive 60 thus driving the accumulation disc 50 enrotation in connection with the shaft 54. As the connection between the discs 50 and the drive elements 60 is not fixed, the speed of rotation of the accumulation discs 50 is different from that of the shaft 56 and therefore that of the wiring disc 38. To these friction forces generated by the strands of wire are added friction forces of the discs 50 on the support shaft 54 under the effect of gravity.

On notera que les forces de frottement engendrées entre les disques 50 et l'arbre 54 dépendent bien entendu du poids des disques 50 et de la composante radiale de la force de frottement engendrée dans les trous de passage 52 par le défilement des brins de fil tirés par le dispositif 26. Compte tenu du mode d'entraînement par frottement des disques 50, on n'aura donc pas d'intérêt particulier à réduire ces forces de frottement, par exemple en montant les disques 50 sur l'arbre de support 54 à l'aide de roulements à billes ou analogues.It will be noted that the frictional forces generated between the disks 50 and the shaft 54 naturally depend on the weight of the disks 50 and on the radial component of the frictional force generated in the through holes 52 by the movement of the drawn strands of wire by the device 26. Given the friction drive mode of the discs 50, there will therefore be no particular interest in reducing these friction forces, for example by mounting the discs 50 on the support shaft 54 to using ball bearings or the like.

Les distances angulaires que parcourent respectivement les disques d'accumulation 50 avant inversion par rapport à la distance angulaire que parcourt le disque de câblage 38 peuvent être ainsi choisies en fonction du couple d'entraînement par frottement souhaité, à transmettre à chaque disque d'accumulation 50 par l'élément d'entraînement 60 qui lui est associé. Ce couple d'entraînement peut être choisi en fonction, d'une part, du coefficient de frottement existant entre les matières des parties en contact de frottement des disques d'accumulation 50 et des éléments d'entraînement 60, et/ou, d'autre part, de la distance R (figure 3) séparant la surface d'entraînement 62 de l'axe de rotation Ar de l'arbre de support 54.The angular distances that the accumulation disks 50 respectively travel before reversing with respect to the angular distance that the wiring disk 38 travels can thus be chosen as a function of the desired friction drive torque, to be transmitted to each accumulation disk 50 by the drive element 60 associated therewith. This drive torque can be chosen as a function, on the one hand, of the coefficient of friction existing between the materials of the parts in friction contact of the accumulation discs 50 and the drive elements 60, and / or, on the other hand, by the distance R (FIG. 3) separating the drive surface 62 from the axis of rotation Ar of the support shaft 54.

Quoiqu'il en soit, les couples d'entraînement par frottement des disques d'accumulation 50 sont tels qu'ils augmentent à partir du disque d'accumulation 50 le plus proche des moyens de guidage 16 jusqu'au disque le plus proche des moyens de câblage 6.Anyway, the friction drive torques of the accumulation discs 50 are such that they increase from the accumulation disc 50 closest to the guide means 16 to the disc closest to the means wiring 6.

Dans l'exemple illustré, les éléments intermédiaires ou d'entraînement 60 ont la forme générale d'une bague comportant un corps 66 rendu solidaire de l'arbre de support 54, par exemple par un cordon de soudure 68 ou tout autre moyen équivalent tel qu'un système vis écrou pour rendre le système démontable, qui se prolonge à une de ses extrémités par un flasque 70 qui s'étend en regard de la face frontale 64 du disque d'accumulation 50 auquel l'élément d'entraînement 60 est associé. Le flasque 70 comporte à sa périphérie un rebord annulaire 72 qui s'étend axialement et dont la face frontale forme la surface d'entraînement 62. La surface d'entraînement 62 a donc une forme annulaire. Il est bien entendu que la forme et les dimensions de cette surface pourront être adaptées par l'homme du métier en fonction des matériaux utilisés et/ou des couples d'entraînement désirés.In the example illustrated, the intermediate or drive elements 60 have the general shape of a ring comprising a body 66 made integral with the support shaft 54, for example by a weld bead 68 or any other equivalent means such a screw nut system to make the system removable, which is extended at one of its ends by a flange 70 which extends opposite the front face 64 of the accumulation disc 50 to which the drive element 60 is associated. The flange 70 has at its periphery an annular flange 72 which extends axially and the front face of which forms the drive surface 62. The drive surface 62 therefore has an annular shape. It is understood that the shape and dimensions of this surface can be adapted by a person skilled in the art depending on the materials used and / or the desired drive torques.

Dans l'exemple illustré, les disques d'accumulation 50 et les éléments d'entraînement 60 sont respectivement réalisés en alliages légers, par exemple en alliage d'aluminium, et comprennent de préférence des évidements (non représentés) permettant de les alléger au maximum et ainsi de diminuer les masses en rotation.In the example illustrated, the accumulation discs 50 and the drive elements 60 are respectively made of light alloys, for example aluminum alloy, and preferably include recesses (not shown) making it possible to lighten them as much as possible. and thus reduce the rotating masses.

Selon des variantes de réalisation de l'invention non représentées, les disques d'accumulation 50 et les éléments d'entraînements 60 peuvent être réalisés en matière plastique injectée dans laquelle sont prévus des inserts métalliques aux endroits qui sont en contact de frottement avec d'autres éléments. Par exemple, les disques 50 peuvent comprendre un anneau apparaissant dans leur face frontale 64 en regard de la surface d'entraînement 62 des éléments 60 et destiné à venir en contact de frottement avec la surface d'entraînement 62, des douilles dans les trous de passage 52, et une bague pour le montage du disque 50 sur l'arbre de support 54. L'élément d'entraînement 60 peut, quant à lui, comprendre un insert en forme d'anneau placé dans le rebord 72 et dont la surface frontale forme la surface d'entraînement 62.According to alternative embodiments of the invention not shown, the accumulation discs 50 and the drive elements 60 can be made of injected plastic material in which are provided metal inserts at the points which are in frictional contact with other elements. For example, the discs 50 may comprise a ring appearing in their front face 64 facing the drive surface 62 of the elements 60 and intended to come into frictional contact with the drive surface 62, sockets in the holes of passage 52, and a ring for mounting the disc 50 on the support shaft 54. The drive element 60 may, for its part, comprise a ring-shaped insert placed in the flange 72 and whose surface front forms the drive surface 62.

En se référant à la figure 4 on voit une variante de réalisation des moyens d'accumulation 32 selon l'invention dans laquelle les mêmes éléments que ceux déjà décrits en liaison avec les figures 1 à 3 portent les mêmes références numériques.Referring to Figure 4 we see an alternative embodiment of the accumulation means 32 according to the invention in which the same elements as those already described in connection with Figures 1 to 3 bear the same reference numerals.

Les moyens d'accumulation 32 représentés dans cette figure se distinguent de ceux précédemment décrits par le fait qu'ils comprennent en outre un dispositif 74 associé à chaque disque d'accumulation 50. Ce dispositif 74 permet d'appliquer le disque d'accumulation 50 contre la surface d'entraînement 62 de l'élément d'entraînement 60 auquel il est associé. Plus précisément, ce dispositif 74 permet, en complément des forces de frottement engendrées par le défilement des brins de fil 4a-4g dans les trous de passage 52, d'appliquer de façon permanente une force axiale sur le disque d'accumulation 50. Ainsi ce dernier est entraîné en rotation par l'élément d'entraînement 60 quelle que soit l'orientation des brins de fil 4a-4g traversant les trous de passage 52 et en particulier lorsque leur orientation est parallèle à l'axe de câblage et que la composante des forces de frottement dans cette direction est faible.The accumulation means 32 shown in this figure are distinguished from those previously described by the fact that they further comprise a device 74 associated with each accumulation disc 50. This device 74 makes it possible to apply the accumulation disc 50 against the drive surface 62 of the drive member 60 with which it is associated. More specifically, this device 74 allows, in addition to the frictional forces generated by the movement of the strands of wire 4a-4g in the through holes 52, to permanently apply an axial force on the accumulation disc 50. Thus the latter is rotated by the drive element 60 whatever the orientation of the strands of wire 4a-4g passing through the through holes 52 and in particular when their orientation is parallel to the wiring axis and that the component of the friction forces in this direction is small.

Dans l'exemple illustré, le dispositif 74 est solidaire en rotation de l'arbre 54 et est disposé en amont du disque d'accumulation 50 par rapport au sens de défilement des brins de fil. Le dispositif 74 comprend un capot circulaire ayant un fond 76 traversé par l'arbre de support 54, et une paroi annulaire 78 s'étendant parallèlement à l'arbre 54 et à distance de celui-ci. La surface extérieure de l'arbre 54, le fond 76 et la paroi annulaire 78 définissent ainsi un logement 80 dans lequel sont logés des ressorts précontraints 82 et une rondelle de friction 84 destinée à venir en contact avec la face frontale opposée à la face 64 du disque d'accumulation 50.In the example illustrated, the device 74 is integral in rotation with the shaft 54 and is arranged upstream of the accumulation disc 50 relative to the direction of travel of the strands of wire. The device 74 comprises a circular cover having a bottom 76 crossed by the support shaft 54, and an annular wall 78 extending parallel to the shaft 54 and at a distance therefrom. The outer surface of the shaft 54, the bottom 76 and the annular wall 78 thus define a housing 80 in which are pre-stressed springs 82 and a friction washer 84 intended to come into contact with the front face opposite to the face 64 accumulation disk 50.

A la figure 4, la position du capot est fixe par rapport l'arbre 54, le capot étant soudé par son fond 76 directement sur cet arbre de sorte que la force engendrée par le ressort 80 sur la rondelle et par conséquent sur le disque 50 est choisie une fois pour toute au montage.In FIG. 4, the position of the cover is fixed relative to the shaft 54, the cover being welded by its bottom 76 directly to this shaft so that the force generated by the spring 80 on the washer and consequently on the disc 50 is chosen once and for all during assembly.

Toutefois, l'homme de métier pourra aisément prévoir selon une variante de réalisation un tel dispositif 74 avec des moyens de réglage de la précontrainte des ressorts 82, par exemple à l'aide d'un système vis-écrou permettant d'ajuster la position du capot le long de l'arbre de support 56, ainsi que de démonter le dispositif.However, a person skilled in the art can easily provide, according to an alternative embodiment, such a device 74 with means for adjusting the preload of the springs 82, for example using a screw-nut system making it possible to adjust the position. of the cover along the support shaft 56, as well as to disassemble the device.

Claims (15)

Station de câblage (1) pour machine de câblage alterné dit de type SZ (I) destinée à assembler en hélice une pluralité de brins de fil unitaires (4a-4g), ladite station de câblage (1) comprenant : - des moyens de guidage (16) fixes des brins de fil (4a-4g), - des moyens de câblage (6) comprenant notamment un élément de câblage (38) mobile en rotation, - des moyens d'accumulation (32) disposés entre lesdits moyens de guidage (16) et lesdits moyens de câblage (16), comprenant au moins un élément d'accumulation (50),
lesdits moyens de guidage (16), lesdits moyens de câblage (6) et lesdits moyens d'accumulation (32) étant chacun traversés par lesdits brins de fil (4a-4g), - un arbre de support (54) s'étendant entre les moyens de guidage (16) et les moyens de câblage (6), ledit arbre de support (54) portant lesdits moyens d'accumulation (32), - des moyens (M, 46, 48) pour entraîner en rotation ledit élément de câblage (38) alternativement dans des sens opposés, - des moyens pour entraîner en rotation ledit élément d'accumulation (50) en concomitance avec ledit élément de câblage (38), et
caractérisée en ce que ledit arbre de support (54) est entraîné en rotation en liaison avec l'élément de câblage (38),
en ce que l'élément d'accumulation (50) est monté libre à rotation et libre axialement sur ledit arbre de support (54),
en ce les moyens d'entraînement en rotation de l'élément d'accumulation (50) comprennent un élément intermédiaire (60) solidaire de l'arbre de support (54), disposé en aval de l'élément d'accumulation (50) par rapport au sens de défilement des brins de fil,
en ce que l'élément intermédiaire (60) comporte une surface d'entraînement (62), et
en ce que l'élément d'accumulation (60) peut être appliqué contre ladite surface d'entraînement (62) et être entraîné en rotation par frottement de cette surface sur l'élément d'accumulation. Wiring station (1) for a so-called SZ type alternating wiring machine (I) intended for helically assembling a plurality of unitary strands of wire (4a-4g), said wiring station (1) comprising: - fixed guide means (16) of the strands of wire (4a-4g), wiring means (6) comprising in particular a wiring element (38) movable in rotation, - accumulation means (32) disposed between said guide means (16) and said wiring means (16), comprising at least one accumulation element (50),
said guide means (16), said wiring means (6) and said accumulation means (32) each being traversed by said strands of wire (4a-4g), a support shaft (54) extending between the guide means (16) and the wiring means (6), said support shaft (54) carrying said accumulation means (32), - means (M, 46, 48) for rotating said wiring element (38) alternately in opposite directions, means for rotating said accumulation element (50) in rotation with said wiring element (38), and
characterized in that said support shaft (54) is rotated in connection with the wiring element (38),
in that the accumulation element (50) is mounted free to rotate and free axially on said support shaft (54),
in that the means for rotating the accumulation element (50) comprise an intermediate element (60) integral with the support shaft (54), arranged downstream of the accumulation element (50) relative to the direction of travel of the strands of wire,
in that the intermediate element (60) has a drive surface (62), and
in that the accumulation element (60) can be applied against said drive surface (62) and be rotated by friction of this surface on the accumulation element. Station de câblage selon la revendication 1, caractérisée en ce que ledit élément d'accumulation (50) a la forme générale d'un disque et en ce que ledit élément intermédiaire (62) comporte une bague (66) entourant l'arbre et se prolongeant à une de ses extrémités par un flasque (70) comportant sur sa face frontale ladite surface d'entraînement (62).Wiring station according to claim 1, characterized in that said accumulation element (50) has the general shape of a disc and in that said intermediate element (62) has a ring (66) surrounding the shaft and is extending at one of its ends by a flange (70) comprising on its front face said driving surface (62). Station de câblage selon la revendication 2, caractérisée en ce que ledit flasque (70) comporte à sa périphérie un rebord annulaire (72) s'étendant axialement et en ce que la face frontale de ce rebord forme ladite surface d'entraînement (62).Wiring station according to claim 2, characterized in that said flange (70) has at its periphery an annular flange (72) extending axially and in that the front face of this flange forms said driving surface (62) . Station de câblage selon l'une des revendications précédentes, caractérisée en ce que lesdits moyens pour entraîner en rotation ledit élément d'accumulation (50) comprennent en outre un dispositif (74) permettant d'appliquer en permanence ledit élément d'accumulation (50) contre ladite surface d'entraînement (62).Wiring station according to one of the preceding claims, characterized in that said means for rotating said accumulation element (50) further comprises a device (74) for permanently applying said accumulation element (50 ) against said drive surface (62). Station de câblage selon la revendication 4, caractérisée en ce que ledit dispositif (74) permettant d'appliquer ledit élément d'accumulation (50) contre ladite surface d'entraînement (62) est solidaire dudit arbre de support (54) et disposé en amont du disque d'accumulation (50) par rapport au sens de défilement des brins de fils.Wiring station according to claim 4, characterized in that said device (74) for applying said accumulation element (50) against said drive surface (62) is integral with said support shaft (54) and arranged in upstream of the accumulation disc (50) relative to the direction of travel of the strands of wire. Station de câblage selon la revendication 4 ou 5, caractérisé ledit dispositif (74) permettant d'appliquer ledit élément d'accumulation (50) contre ladite surface d'entraînement (62) comprend un ressort (82) agissant sur une bague de friction (84) qui vient en contact de frottement avec l'élément d'accumulation (50).Wiring station according to claim 4 or 5, characterized in that said device (74) for applying said accumulation element (50) against said driving surface (62) comprises a spring (82) acting on a friction ring ( 84) which comes into frictional contact with the accumulation element (50). Station de câblage selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend une pluralité d'éléments d'accumulation (50) associés chacun à un élément intermédiaire d'entraînement (60).Cable station according to any one of the preceding claims, characterized in that it comprises a plurality of accumulation elements (50) each associated with an intermediate drive element (60). Station de câblage selon la revendication 7, caractérisée en ce que le couple d'entraînement par frottement transmis à l'élément d'accumulation (50) par l'élément intermédiaire (60) augmente à partir des moyens de guidage (16) fixes jusqu'aux moyens de câblage (6).Wiring station according to Claim 7, characterized in that the friction drive torque transmitted to the storage element (50) by the intermediate element (60) increases from the guide means (16) fixed up to 'to the wiring means (6). Station de câblage selon la revendication 8, caractérisée en ce que le couple d'entraînement varie en fonction, d'une part, du coefficient de frottement entre les matières respectivement des éléments intermédiaires (60) et des éléments d'accumulation (50) et/ou, d'autre part, du rayon (R) défini par la distance séparant la surface de frottement (62) de l'axe de rotation (Ar) de l'arbre de support (54).Wiring station according to Claim 8, characterized in that the drive torque varies as a function, on the one hand, of the coefficient of friction between the materials of the intermediate elements (60) and of the accumulation elements (50) and / or, on the other hand, the radius (R) defined by the distance separating the friction surface (62) from the axis of rotation (Ar) of the support shaft (54). Station de câblage selon l'une des revendications 7 à 9, caractérisée en ce que les éléments d'accumulation (50) sont montés à égale distance les uns des autres sur l'arbre de support (54).Cable station according to one of Claims 7 to 9, characterized in that the storage elements (50) are mounted at an equal distance from each other on the support shaft (54). Station de câblage selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments d'accumulation (50) et les éléments intermédiaires (60) comprennent des évidements d'allégement.Wiring station according to any one of the preceding claims, characterized in that the accumulation elements (50) and the intermediate elements (60) include lightening recesses. Station de câblage selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments mobiles en rotation (de ladite station) sont réalisés en alliages légers.Wiring station according to any one of the preceding claims, characterized in that the mobile elements in rotation (of the said station) are made of light alloys. Station de câblage selon l'une des revendications précédentes, caractérisée en ce que l'arbre de support (54) a la forme d'un tube destiné à être traversé par l'âme du câble à fabriquer.Cable station according to one of the preceding claims, characterized in that the support shaft (54) has the form of a tube intended to be traversed by the core of the cable to be manufactured. Station de câblage selon l'une des revendications précédentes, caractérisée en ce que l'ajustement de l'élément d'accumulation (50) sur l'arbre de support (54) est effectué avec des tolérances de fabrication F7, h7.Cable station according to one of the preceding claims, characterized in that the adjustment of the accumulation element (50) on the support shaft (54) is carried out with manufacturing tolerances F7, h7. Station de câblage selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend en outre une filière de câblage (FC) disposée en aval de l'élément de câblage (38) par rapport au sens du défilement des brins de fils (4a-4g).Wiring station according to any one of the preceding claims, characterized in that it further comprises a wiring die (FC) disposed downstream of the wiring element (38) relative to the direction of travel of the strands of wire (4a-4g).
EP96111416A 1995-07-26 1996-07-16 Stranding station for alternate or SZ stranding machine Expired - Lifetime EP0756290B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9509089 1995-07-26
FR9509089A FR2737337B1 (en) 1995-07-26 1995-07-26 WIRING STATION FOR ALTERNATE OR SZ TYPE WIRING MACHINE

Publications (2)

Publication Number Publication Date
EP0756290A1 true EP0756290A1 (en) 1997-01-29
EP0756290B1 EP0756290B1 (en) 1999-10-06

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ID=9481404

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Application Number Title Priority Date Filing Date
EP96111416A Expired - Lifetime EP0756290B1 (en) 1995-07-26 1996-07-16 Stranding station for alternate or SZ stranding machine

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US (1) US5699660A (en)
EP (1) EP0756290B1 (en)
AT (1) ATE185440T1 (en)
DE (1) DE69604543T2 (en)
FR (1) FR2737337B1 (en)

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CN101671967B (en) * 2009-09-02 2012-05-30 韩百峰 Transmission device for friction pulley of rope twisting machine

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US8161721B2 (en) * 2009-09-30 2012-04-24 Corning Cable Systems Llc Cable stranding apparatus employing a hollow-shaft guide member driver
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US8904743B2 (en) 2009-09-30 2014-12-09 Corning Cable Systems Llc Cable stranding apparatus employing a hollow-shaft guide member driver
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EP2918533B1 (en) * 2014-03-10 2018-01-03 SUPERBA (Société par Actions Simplifiée) Device for generating a false twist in a strand
CN108296675A (en) * 2018-03-29 2018-07-20 江阴市博汇机械成套设备有限公司 A kind of stranding device of welding wire
CN110767382A (en) * 2019-10-21 2020-02-07 徐州立方机电设备制造有限公司 Cage type wire twisting device
CN111443445B (en) * 2020-03-31 2022-04-08 烽火通信科技股份有限公司 A transposition device that is used for once SZ transposition multilayer loose tube

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Also Published As

Publication number Publication date
EP0756290B1 (en) 1999-10-06
US5699660A (en) 1997-12-23
DE69604543D1 (en) 1999-11-11
FR2737337B1 (en) 1997-09-19
FR2737337A1 (en) 1997-01-31
DE69604543T2 (en) 2000-05-11
ATE185440T1 (en) 1999-10-15

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