EP0756290B1 - 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
EP0756290B1
EP0756290B1 EP96111416A EP96111416A EP0756290B1 EP 0756290 B1 EP0756290 B1 EP 0756290B1 EP 96111416 A EP96111416 A EP 96111416A EP 96111416 A EP96111416 A EP 96111416A EP 0756290 B1 EP0756290 B1 EP 0756290B1
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EP
European Patent Office
Prior art keywords
stranding
accumulation
support shaft
rotation
station according
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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.)
Expired - Lifetime
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EP96111416A
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German (de)
French (fr)
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EP0756290A1 (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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Swisscab SA
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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 wiring station for alternating wiring machine 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 masses rotation are less important than those of the devices accumulators of wiring stations of the prior art.
  • SZ wiring machine in which strands of wire are debited from stationary coils on a SZ wiring station in which they are alternately twisted in two opposite and past directions then through a wiring die. Strands of wire thus wired are then wound on a take-up reel also fixed after the twist has been fixed, by example, using a ribbon or by drowning the cable in a plastic.
  • the wiring station notably includes a accumulator device arranged between a plate of stationary guidance traversed by the strands of wire, which is located upstream from the direction of travel of the cable, and a wiring disc also crossed by strands of wire and rotated alternately in opposite senses.
  • the accumulator device has for function of ensuring the regular and rapid advance of the strands of wire despite the alternating helical twists of these last imposed by the wiring disc.
  • the accumulator device generally comprises a plurality of accumulation discs including holes guide evenly distributed around their circumference and through which the strands of wire pass. These discs, mounted free to rotate on a support shaft common between the stationary guide plate and the wiring disc which is itself mounted free to rotate on this shaft, are rotated on the shaft of support alternately in opposite directions in connection with the drive of the wiring disc.
  • the drive of the disc of wiring is carried out by a strap mounted respectively on the periphery of the wiring disc and on a pulley attached to a secondary drive shaft which is driven by a motor capable of performing reversals direction of rotation at high speed.
  • the accumulation discs are driven rotating similarly to the wiring disc, by belts and pulleys secured to the tree secondary training. However, reports from reduction between the accumulation discs are such that their rotational speeds decrease from the disc wiring to the stationary guide plate.
  • This type of accumulator device has the main disadvantage of understanding a lot of moving parts. As the speed of the strands of wire in the accumulator device, and by therefore the production speed of cables, are linked at maximum speed of direction of rotation reversals accumulation discs, it is easy to understand that the cable production speed is quickly limited by the number and importance of mass in rotation of the motor shaft.
  • the main aim of the invention is therefore to remedy the aforementioned disadvantages of the prior art in providing a wiring station for wiring machine comprising a simple accumulator device, compact and economical and which allows in particular increase the speed of reverse direction of rotation of accumulation discs and thereby the speed of wiring.
  • a station wiring comprising means for driving accumulation elements of simple construction, economical, space-saving and which due to their lightness favor high direction reversal speeds of rotation of the accumulation elements.
  • these training means consist of mount the free accumulation elements in rotation and with a certain axial clearance on the support shaft and at associate each of these elements with an intermediate element integral with the support shaft and disposed downstream of each element of accumulation with respect to the sense of scrolling strands of wire.
  • these strands of wire are almost in permanent contact with the elements of accumulation and the friction of the strands of wire on the elements of accumulation generates a force with a component axial which applies each element of accumulation against the intermediate element associated with it.
  • Each accumulation element, free to rotate on the shaft support is then driven by a friction force by its associated intermediate element which is integral with the support shaft.
  • the drive torque of the accumulating elements increases with the magnitude of the axial component of the force of friction.
  • the absolute value of the couple depends on the coefficient of friction between the materials forming the elements of accumulation and the intermediate elements and, on the other part, of the radius defined by the distance between the surface friction of 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 end by a flange comprising on its front face the drive surface.
  • the flange has a flange at its periphery axially extending annular, the front face of this rim forming the drive surface.
  • the installation I comprises, upstream of the wiring 1, seven supply coils 2a-2g where are wound respectively strands of single wire 4a-4g.
  • These coils conventionally provide the strands of single wires to wiring station 1 in which the strands of single wire 4a-4g are wired or joined together by twisting in alternating directions by means wiring 6.
  • the support means 8 include multi-grooved pulleys respectively deflection 10 and support 12 mounted seriously on a foot support 14, through which the strands of wires pass 4a-4g before entering wiring station 1 of the invention by means of guide means stationary 16.
  • the individual strands of wire wired or joined by twist, coming out of wiring station 1 pass then in an extrusion station 18 in which they are covered with a sheath to form a cable 20.
  • the cable 20 leaving the extrusion station 18 then passes to a cooling station 22 before to be introduced, for drying, in a station 24 and in traction means 26 in which it is pulled and directed to a reception station 28 in which it is conventionally wound on a take-up reel 30.
  • the different 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, drying means 24, the traction means 26 and the receiving station 28, are located substantially on an axis AA ′ (FIG. 2), the general cable run from the left of the figure 1 to the right of it, or in the sense A-A '.
  • the wiring station 1 which comprises accumulation means 32 arranged between the fixed guide means 16 and the wiring means 6, all of these means being crossed by the strands of unit wires 4a-4g to be wired which are then joined by a conventional FC wiring path located downstream of wiring means 6 relative to the direction of travel of the cable.
  • the guide means 16 are formed so conventional by a plate 34 pierced with guide holes 36 evenly distributed along a circle.
  • the wiring means 6 are also made of conventional way and include a wiring disc 38, containing guide holes 40 equally distributed regularly along a circle. 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 training 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 go.
  • the rotation of the motor M is controlled by a station central control unit (not shown) which determines the speed of rotation of the wiring disc 38 and its frequency of direction reversal, and which therefore determines the angular distance traveled by this disc 38 before each inversion.
  • the accumulation means 32 include a plurality of identical accumulation elements 50, having the shape of discs and each comprising holes of guide 52 distributed regularly on a circle.
  • the number of holes in the means of guide 16, in the wiring means 6 and in each of accumulation discs 50 is determined by the number of 4a-4g single strands of wire from the spools debtors 2a-2g which pass 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 to be replaced by notches which open at the periphery of the discs 38 and 50 or by any opening with walls to ensure a driving in rotation of the unit strands of wire.
  • they can be replaced by such equivalent means as soon as these means provide a guide function for the strands of wire.
  • the accumulation discs 50 are mounted free in rotation and axially free, preferably equal distance from each other, on a support shaft 54 which extends between the guide means 16 and the means wiring 6.
  • the support shaft 54 is rotatably mounted in a bearing 58 formed in the plate 34, and crosses the wiring disc 38 from which it is united.
  • 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.
  • the shaft 54 is present in the form of a tube in which the core (not shown) of a cable to be manufactured can pass before the wiring the strands of wire around it.
  • the support shaft 54 may be a solid shaft in the case where the cable to be manufactured has no core.
  • the accumulation means 32 further comprise means for driving in alternating rotation in opposite directions the accumulation disks 50 at the same time with the alternating rotation of the wiring disc 38.
  • These rotary drive means include, according to the invention, an intermediate element 60 or element drive made integral in rotation and axially the support shaft 54 by any appropriate means and associated with each accumulation disk 50.
  • Each element drive 60 is disposed on the shaft 54 downstream of the accumulation disk 50 with which it is associated, by relative to the direction of travel of the strands of wire.
  • the drive elements 60 each include a surface 62 called training ( Figure 3) by which they act on part of the front surface 64 of discs 50 to drive them in rotation by friction.
  • the friction forces generated by the scrolling strands of wire through the accumulation discs 50 have an axial component that applies the discs 50 against the friction surface 52 of the elements drive 60 thus driving the disc accumulation 50 enrotation in connection with the shaft 54.
  • the rotation speed accumulation discs 50 is different from that of shaft 56 and therefore that of the wiring disc 38. To these friction forces generated by the strands of wires is added friction forces of the discs 50 on the support shaft 54 under the effect of gravity.
  • the friction forces generated between the discs 50 and the shaft 54 of course depend the weight of the discs 50 and the radial component of the frictional force generated in through holes 52 by the scrolling of the strands of wire pulled by the device 26. Taking into account the friction drive mode discs 50, so we won't have any particular interest in reduce these frictional forces, for example by mounting the discs 50 on the support shaft 54 using ball bearings or the like.
  • the angular distances traveled respectively the front 50 accumulation discs inversion with respect to the angular distance traveled the wiring disc 38 can thus be chosen by function of the friction drive torque desired, to be transmitted to each accumulation disk 50 by the drive element 60 associated therewith.
  • This couple training can be chosen on the one hand, the coefficient of friction between the materials parts in friction contact with the discs accumulation 50 and drive elements 60, and / or, on the other hand, the distance R ( Figure 3) separating the drive surface 62 of the axis of rotation Ar of the support shaft 54.
  • couples training by friction of the accumulation discs 50 are such that they increase from accumulation disk 50 the most close to the guide means 16 to the most disc close to the wiring means 6.
  • the intermediate elements or training 60 have the general shape of a ring comprising a body 66 made integral with the shaft of support 54, for example by a weld bead 68 or any other equivalent means such as a screw nut system to make the system removable, which extends to a from its ends by a flange 70 which extends opposite of the front face 64 of the accumulation disc 50 at which the drive element 60 is associated.
  • the flange 70 has at its periphery an annular rim 72 which extends axially and the front face of which forms the drive surface 62.
  • the drive surface 62 has therefore an annular shape. It is understood that the shape and the dimensions of this surface can be adapted by a person skilled in the art depending on the materials used and / or desired training couples.
  • the accumulation discs 50 and the drive elements 60 are respectively made of light alloys, for example alloy aluminum, and preferably include recesses (not shown) to lighten them as much as possible and thus reducing the rotating masses.
  • the accumulation discs 50 and the drive elements 60 can be made in injected plastic material in which are provided metal inserts in places that are in contact with friction with other elements.
  • discs 50 may include a ring appearing in their front face 64 facing the surface 62 of elements 60 and intended to come in friction contact with the drive surface 62, bushings in through holes 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 rim 72 and whose front surface forms the drive surface 62.
  • the accumulation means 32 represented in this figure differ from those previously described by the fact that they further include an associated device 74 each accumulation disk 50.
  • This device 74 allows apply the accumulation disk 50 against the surface 62 of the drive element 60 to which it is associated. More specifically, this device 74 allows, in complement of the friction forces generated by the threading of strands of wire 4a-4g in the holes of passage 52, to permanently apply a force axial on the accumulation disk 50.
  • the latter is rotated by the drive element 60 whatever the orientation of the strands of wire 4a-4g crossing 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 weak.
  • the device 74 is integral in rotation with the shaft 54 and is arranged in upstream of the accumulation disc 50 with respect to the direction of scrolling strands of wire.
  • the device 74 includes a circular cover having a bottom 76 crossed by the shaft of support 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 wall ring 78 thus define a housing 80 in which 82 pre-stressed springs and a washer are housed friction 84 intended to come into contact with the face frontal opposite to the face 64 of the accumulation disk 50.
  • a person skilled in the art can easily foresee according to an alternative embodiment such a device 74 with means for adjusting the preload springs 82, for example using a screw-nut system to adjust the position of the cover along the support shaft 56, as well as dismantling 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 wiring station for alternating wiring machine 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 masses rotation are less important than those of the devices accumulators 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 (EP-A-0 582 802).It is known to give greater flexibility to a bundle of strands of wire or cables of all types (electrical wire, optical fiber or the like), to wire these strands of wire alternately inducing twist helically in two opposite directions, respectively direction S and the direction Z (EP-A-0 582 802).

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 l'aide d'un ruban ou encore en noyant le câble dans une matière plastique.This is achieved using a wiring machine so-called SZ wiring machine in which strands of wire are debited from stationary coils on a SZ wiring station in which they are alternately twisted in two opposite and past directions then through a wiring die. Strands of wire thus wired are then wound on a take-up reel also fixed after the twist has been fixed, by example, using a ribbon or by drowning the cable in a plastic.

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 entraíné 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 notably includes a accumulator device arranged between a plate of stationary guidance traversed by the strands of wire, which is located upstream from the direction of travel of the cable, and a wiring disc also crossed by strands of wire and rotated alternately in opposite senses. The accumulator device has for function of ensuring the regular and rapid advance of the strands of wire despite the alternating helical twists of these last 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 entraínés en rotation sur l'arbre de support alternativement dans des sens opposés en liaison avec l'entraínement du disque de câblage.The accumulator device generally comprises a plurality of accumulation discs including holes guide evenly distributed around their circumference and through which the strands of wire pass. These discs, mounted free to rotate on a support shaft common between the stationary guide plate and the wiring disc which is itself mounted free to rotate on this shaft, are rotated on the shaft of support alternately in opposite directions in connection with the drive of the wiring disc.

A titre d'exemple, l'entraínement 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'entraínement secondaire qui est entraíné par un moteur capable d'effectuer des inversions de sens de rotation à grande vitesse.As an example, the drive of the disc of wiring is carried out by a strap mounted respectively on the periphery of the wiring disc and on a pulley attached to a secondary drive shaft which is driven by a motor capable of performing reversals direction of rotation at high speed.

Les disques d'accumulation sont quant à eux entraínés en rotation de façon analogue au disque de câblage, par des courroies et des poulies solidaires de l'arbre d'entraínement 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 driven rotating similarly to the wiring disc, by belts and pulleys secured to the tree secondary training. However, reports from reduction between the accumulation discs are such that their rotational speeds decrease from the disc wiring 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 disadvantage of understanding a lot of moving parts. As the speed of the strands of wire in the accumulator device, and by therefore the production speed of cables, are linked at maximum speed of direction of rotation reversals accumulation discs, it is easy to understand that the cable production speed is quickly limited by the number and importance of mass in rotation of 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 an unfavorable influence on the cost and size general 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 aim of the invention is therefore to remedy the aforementioned disadvantages of the prior art in providing a wiring station for wiring machine comprising a simple accumulator device, compact and economical and which allows in particular increase the speed of reverse direction of rotation of accumulation discs and thereby the speed of wiring.

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 entraíner en rotation ledit élément de câblage alternativement dans des sens opposés, et
  • des moyens pour entraíner en rotation ledit élément d'accumulation en concomitance avec ledit élément de câblage,
caractérisée en ce que ledit arbre de support est entraíné 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'entraínement 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'entraínement et être ainsi entraíné 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 accumulating element in rotation with said wiring element,
    characterized in that said support shaft is rotated in connection with the wiring element,
  • in that the accumulation element is mounted free to rotate and free axially on said support shaft,
  • in that the means for rotating the accumulation element comprise an intermediate element integral with the support shaft, disposed downstream of the accumulation element relative 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'entraínement 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, we realize a station wiring comprising means for driving accumulation elements of simple construction, economical, space-saving and which due to their lightness favor high direction reversal speeds of rotation of the accumulation elements.

    En effet, ces moyens d'entraínement 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 entraíné 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'entraínement 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'entraínement 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.Indeed, these training means consist of mount the free accumulation elements in rotation and with a certain axial clearance on the support shaft and at associate each of these elements with an intermediate element integral with the support shaft and disposed downstream of each element of accumulation with respect to the sense of scrolling strands of wire. Like the strands of wire to wire that go through the accumulation elements are subjected to a certain tension due in particular to traction cable winding, these strands of wire are almost in permanent contact with the elements of accumulation and the friction of the strands of wire on the elements of accumulation generates a force with a component axial which applies each element of accumulation against the intermediate element associated with it. Each accumulation element, free to rotate on the shaft support, is then driven by a friction force by its associated intermediate element which is integral with the support shaft. It is therefore easy to understand that the drive torque of the accumulating elements increases with the magnitude of the axial component of the force of friction. Of course, the absolute value of the couple on the one hand, depends on the coefficient of friction between the materials forming the elements of accumulation and the intermediate elements and, on the other part, of the radius defined by the distance between the surface friction of 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.We thus take advantage of the forces of friction inherent in the operation of the station and involved when scrolling strands of wire through the elements of accumulation.

    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'entraínement.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 end by a flange comprising on its front 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'entraínement.According to another preferred characteristic of the invention, the flange has a flange at its periphery axially extending annular, the front face of this rim forming the drive surface.

    D'autres avantages et caractéristiques de l'invention apparaítront 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'entraínement 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'entraínement selon une variante de réalisation de l'invention;
    Other advantages and characteristics of the invention will appear on reading the detailed description which follows of exemplary embodiments given by way of nonlimiting illustration, 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 one 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 part of an application to the manufacture of a cable electric in alternating wiring or SZ wiring with seven strands unitary, each of the strands being formed of a wire insulated conductor. However, it goes without saying that the invention is in no way limited to this application and that the nature and number of individual strands of wire can vary depending on the desired cable. The invention may for example apply just as advantageously to the manufacture of this type of electrical cables including a core and formed from uninsulated conducting wires, or 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 Figure 1, we see a schematic representation of an installation I of manufacture of cables in alternating wiring or SZ wiring including a wiring station designated by the general reference number 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 the figure 1, the installation I comprises, upstream of the wiring 1, seven supply coils 2a-2g where are wound respectively strands of single wire 4a-4g. These coils conventionally provide the strands of single wires to wiring station 1 in which the strands of single wire 4a-4g are wired or joined together by twisting in alternating directions by means wiring 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, means of support and guide 8 of the individual wire strands are arranged between the supply coils 2a-2g and the wiring station 1. In the example shown, the support means 8 include multi-grooved pulleys respectively deflection 10 and support 12 mounted insane on a foot support 14, through which the strands of wires pass 4a-4g before entering wiring station 1 of the invention by means of guide means stationary 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 individual strands of wire wired or joined by twist, coming out of wiring station 1 pass then in 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 to a cooling station 22 before to be introduced, for drying, in a station 24 and in traction means 26 in which it is pulled and directed to a reception 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 different 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, drying means 24, the traction means 26 and the receiving station 28, are located substantially on an axis AA ′ (FIG. 2), the general cable run from the left of the figure 1 to the right of it, or in the sense A-A '.

    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 sees the wiring station 1 according to the invention which comprises accumulation means 32 arranged between the fixed guide means 16 and the wiring means 6, all of these means being crossed by the strands of unit wires 4a-4g to be wired which are then joined by a conventional FC wiring path located downstream of 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 formed so conventional by a plate 34 pierced with guide holes 36 evenly distributed 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 entraíné 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'entraínement 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 made of conventional way and include a wiring disc 38, containing guide holes 40 equally distributed regularly along a circle. 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 training 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 go. The rotation of the motor M is controlled by a station central control unit (not shown) which determines the speed of rotation of the wiring disc 38 and its frequency of direction reversal, 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 include a plurality of identical accumulation elements 50, having the shape of discs and each comprising holes of guide 52 distributed regularly on 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.Note that the number of holes in the means of guide 16, in the wiring means 6 and in each of accumulation discs 50 is determined by the number of 4a-4g single strands of wire from the spools debtors 2a-2g which pass 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 entraínement 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 to be replaced by notches which open at the periphery of the discs 38 and 50 or by any opening with walls to ensure a driving in rotation of the unit strands of wire. In this which concerns the holes 36, they can be replaced by such equivalent means as soon as these means provide a guide function for the strands of wire.

    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 axially free, preferably equal distance from each other, on a support shaft 54 which extends between the guide means 16 and the means wiring 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 for information that if, according to ISO / VSM 58400, the diameter of the support shaft 54 with a tolerance h7, the diameter passage 56 (Figures 3 and 4) in the discs of accumulation 50 for the passage of this tree will have the same diameter executed with tolerance F7. The disks accumulator 50 will thus be easily axially movable on tree 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, entraínés 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 rotatably mounted in a bearing 58 formed in the plate 34, and crosses the wiring disc 38 from which it is united. 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.

    Les raisons pour lesquelles l'arbre de support 54 est entraíné en rotation alors que les disques d'accumulation 50 sont montés libres sur celui-ci apparaítront ci-après en liaison avec la description des moyens d'entraínement des éléments d'accumulation 50.The reasons why the support shaft 54 is rotated while the accumulation discs 50 are free mounted on it will appear below in connection with the description of the means of training 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 present in the form of a tube in which the core (not shown) of a cable to be manufactured can pass before the wiring the strands of wire around it. Of course the support shaft 54 may be a solid shaft in the case where the cable to be manufactured has no core.

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

    Ces moyens d'entraínement en rotation comprennent, selon l'invention, un élément intermédiaire 60 ou élément d'entraínement 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'entraínement 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'entraínement 60 comprennent chacun une surface 62 dite d'entraínement (figure 3) par laquelle ils agissent sur une partie de la surface frontale 64 des disques 50 pour les entraíner en rotation par frottement.These rotary drive means include, according to the invention, an intermediate element 60 or element drive made integral in rotation and axially the support shaft 54 by any appropriate means and associated with each accumulation disk 50. Each element drive 60 is disposed on the shaft 54 downstream of the accumulation disk 50 with which it is associated, by relative to the direction of travel of the strands of wire. The drive elements 60 each include a surface 62 called training (Figure 3) by which they act on part of the front surface 64 of 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'entraínement 60 entraínant ainsi le disque d'accumulation 50 enrotation en liaison avec l'arbre 54. Comme la liaison entre les disques 50 et les éléments d'entraínement 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 free mounted in rotation and free axially on the shaft 54, the friction forces generated by the scrolling strands of wire through the accumulation discs 50, especially when the strands of wire are not parallel the axis of travel of the cable (FIG. 3, strand of wire 4a), have an axial component that applies the discs 50 against the friction surface 52 of the elements drive 60 thus driving the disc accumulation 50 enrotation in connection with the shaft 54. As the connection between the discs 50 and the elements drive 60 is not fixed, the rotation speed accumulation discs 50 is different from that of shaft 56 and therefore that of the wiring disc 38. To these friction forces generated by the strands of wires is 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'entraínement 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 friction forces generated between the discs 50 and the shaft 54 of course depend the weight of the discs 50 and the radial component of the frictional force generated in through holes 52 by the scrolling of the strands of wire pulled by the device 26. Taking into account the friction drive mode discs 50, so we won't have any particular interest in reduce these frictional forces, for example by mounting the discs 50 on the support shaft 54 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'entraínement par frottement souhaité, à transmettre à chaque disque d'accumulation 50 par l'élément d'entraínement 60 qui lui est associé. Ce couple d'entraínement 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'entraínement 60, et/ou, d'autre part, de la distance R (figure 3) séparant la surface d'entraínement 62 de l'axe de rotation Ar de l'arbre de support 54.The angular distances traveled respectively the front 50 accumulation discs inversion with respect to the angular distance traveled the wiring disc 38 can thus be chosen by function of the friction drive torque desired, to be transmitted to each accumulation disk 50 by the drive element 60 associated therewith. This couple training can be chosen on the one hand, the coefficient of friction between the materials parts in friction contact with the discs accumulation 50 and drive elements 60, and / or, on the other hand, the distance R (Figure 3) separating the drive surface 62 of the axis of rotation Ar of the support shaft 54.

    Quoiqu'il en soit, les couples d'entraínement 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, couples training by friction of the accumulation discs 50 are such that they increase from accumulation disk 50 the most close to the guide means 16 to the most disc close to the wiring means 6.

    Dans l'exemple illustré, les éléments intermédiaires ou d'entraínement 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'entraínement 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'entraínement 62. La surface d'entraínement 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'entraínement désirés.In the example illustrated, the intermediate elements or training 60 have the general shape of a ring comprising a body 66 made integral with the shaft of support 54, for example by a weld bead 68 or any other equivalent means such as a screw nut system to make the system removable, which extends to a from its ends by a flange 70 which extends opposite of the front face 64 of the accumulation disc 50 at which the drive element 60 is associated. The flange 70 has at its periphery an annular rim 72 which extends axially and the front face of which forms the drive surface 62. The drive surface 62 has therefore an annular shape. It is understood that the shape and the dimensions of this surface can be adapted by a person skilled in the art depending on the materials used and / or desired training couples.

    Dans l'exemple illustré, les disques d'accumulation 50 et les éléments d'entraínement 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 alloy aluminum, and preferably include recesses (not shown) to lighten them as much as possible and thus reducing the rotating masses.

    Selon des variantes de réalisation de l'invention non représentées, les disques d'accumulation 50 et les éléments d'entraínements 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'entraínement 62 des éléments 60 et destiné à venir en contact de frottement avec la surface d'entraínement 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'entraínement 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'entraínement 62. According to alternative embodiments of the invention not shown, the accumulation discs 50 and the drive elements 60 can be made in injected plastic material in which are provided metal inserts in places that are in contact with friction with other elements. For example, discs 50 may include a ring appearing in their front face 64 facing the surface 62 of elements 60 and intended to come in friction contact with the drive surface 62, bushings in through holes 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 rim 72 and whose front surface 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 a variant of realization 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 digital references.

    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'entraínement 62 de l'élément d'entraínement 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 entraíné en rotation par l'élément d'entraínement 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 represented in this figure differ from those previously described by the fact that they further include an associated device 74 each accumulation disk 50. This device 74 allows apply the accumulation disk 50 against the surface 62 of the drive element 60 to which it is associated. More specifically, this device 74 allows, in complement of the friction forces generated by the threading of strands of wire 4a-4g in the holes of passage 52, to permanently apply a force axial on the accumulation disk 50. Thus the latter is rotated by the drive element 60 whatever the orientation of the strands of wire 4a-4g crossing 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 weak.

    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 in upstream of the accumulation disc 50 with respect to the direction of scrolling strands of wire. The device 74 includes a circular cover having a bottom 76 crossed by the shaft of support 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 wall ring 78 thus define a housing 80 in which 82 pre-stressed springs and a washer are housed friction 84 intended to come into contact with the face frontal opposite to the face 64 of the 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 by report the shaft 54, the cover being welded by its bottom 76 directly on this tree so that the force generated by 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 foresee according to an alternative embodiment such a device 74 with means for adjusting the preload springs 82, for example using a screw-nut system to adjust the position of the cover along the support shaft 56, as well as dismantling the device.

    Claims (15)

    1. Stranding station (1) for stranding machines of the SZ type (I) intended to join or assemble helically a plurality of individual wire strands (4a-4g), said stranding station (1) comprising :
      fixed means (16) for guiding the wire strands (4a-4g),
      stranding means (6) comprising in particular a stranding element (38) which is able to rotate about an axis,
      accumulation means (32) disposed between said guide means (16) and said stranding means (6), comprising at least one accumulation element (50),
      said wire strands (4a-4g) passing through each of said guide means (16), said stranding means (6) and said accumulation means (50),
      a support shaft (54) extending between the guide means (16) and the stranding means (6), said support shaft (54) carrying said accumulation means (32),
      means (M, 46, 48) for alternately driving said stranding element (38) in rotation in opposite directions,
      means for driving said accumulation element (50) in rotation simultaneously with said stranding element (38),
      characterized in that said support shaft (54) is driven in rotation in conjunction with said stranding element (38),
      in that said accumulation element (50) is mounted so that it is free to rotate about said support shaft and free to move axially along said support shaft (54),
      in that the rotation driving means of the accumulation element (50) comprise an intermediate element (60) attached to the support shaft (54), disposed downstream of the accumulation element (50) in relation to the forward motion direction of the wire strands,
      in that the intermediate element (60) comprises a driving surface (62), and
      in that the accumulation element (50) may be applied against said driving surface (62) and thus be driven in rotation by friction of this driving surface (62) against the accumulation element (50).
    2. Stranding 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 (60) comprises a ring (66) surrounding the shaft and prolonged at one of its ends by a flange (70) comprising on its frontal face said driving surface (62).
    3. Stranding station according to claim 2, characterized in that said flange (70) comprises at its periphery an annular rim (72) which extends axially and in that the frontal face of this rim forms said driving surface (62).
    4. Stranding station according to one of the preceding claims, characterized in that said means for driving said accumulation element (50) in rotation further comprise a device (74) enabling said accumulation element (50) to be permanently applied against said driving surface (62).
    5. Stranding device according to claim 2, characterized in that said device (74), enabling said accumulation element (50) to be applied against said driving surface (62), is attached to said support shaft (54) and arranged upstream of the accumulation disc (50) in relation to the forward motion direction of the wire strands.
    6. Stranding station according to claim 4 or 5, characterized in that said device (74) enabling said accumulation element (50) to be applied against said driving surface (62) comprises a spring (82) acting on a friction ring (84) which comes into friction contact with the accumulation element (50).
    7. Stranding 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 driving element (60).
    8. Stranding element according to claim 7, characterized in that the friction driving torque transmitted to the accumulation element (50) via the intermediate element (60), increases from the fixed guide means (16) to the stranding means (6).
    9. Stranding station according to claim 8, characterized in that the driving torque varies as a function, on the one hand, of the friction coefficient between the material respectively of the intermediate elements (60) and the accumulation elements (50) and/or, on the other hand, of the radius (R) defined by the distance separating the friction surface (62) from the axis of rotation (Ar) of the support shaft (54).
    10. Stranding station according to one of claims 7 to 9, characterized in that the accumulation elements (50) are mounted equidistant from each other on the support shaft (54).
    11. Stranding station according to any one of the preceding claims, characterized in that the accumulation elements (50) and the intermediate elements (60) comprise lightening recesses.
    12. Stranding element according to any one of the preceding claims, characterized in that the elements which are mobile in rotation (of said station) are made in light metal alloys.
    13. Stranding station according to one of the preceding claims, characterized in that the support shaft (54) has the shape of a tube through which the core of the cable to be manufacture is intended to pass.
    14. Stranding 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).
    15. Stranding station according to any one of the preceding claims, characterized in that it also comprises a stranding die (FC) arranged downstream of the stranding element (38) in relation to the forward motion direction of the wire strands (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 EP0756290A1 (en) 1997-01-29
    EP0756290B1 true EP0756290B1 (en) 1999-10-06

    Family

    ID=9481404

    Family Applications (1)

    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

    Country Status (5)

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

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    ES2169151T3 (en) * 1995-08-04 2002-07-01 Aplicator System Ab APPARATUS FOR THE SUPPLY OF THREADS TO A POWER HEAD IN THE ARM OF A MOBILE ROBOT.
    NO328774B1 (en) * 2008-10-06 2010-05-10 Aker Subsea As SZ-laying machine
    US8161721B2 (en) * 2009-09-30 2012-04-24 Corning Cable Systems Llc Cable stranding apparatus employing a hollow-shaft guide member driver
    US8161722B2 (en) * 2009-09-30 2012-04-24 Corning Cable Systems Llc Cable stranding methods employing a hollow-shaft guide member driver
    US8904743B2 (en) 2009-09-30 2014-12-09 Corning Cable Systems Llc Cable stranding apparatus employing a hollow-shaft guide member driver
    CN101671967B (en) * 2009-09-02 2012-05-30 韩百峰 Transmission device for friction pulley of rope twisting machine
    CN101934444A (en) * 2010-09-13 2011-01-05 徐州华星焊材有限公司 High-speed welding wire strander
    CN102938274A (en) * 2012-10-11 2013-02-20 宁波康兴电缆有限公司 Left-right twisting device for cable shield
    KR101420354B1 (en) * 2013-04-29 2014-07-16 구미송 Stranding machines
    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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    DE3149159A1 (en) * 1981-12-08 1983-07-21 Siemens AG, 1000 Berlin und 8000 München SZ CABLE DEVICE FOR SEALING ELEMENTS OF ELECTRICAL CABLES AND CABLES
    DE3404638A1 (en) * 1984-02-09 1985-08-14 Siemens AG, 1000 Berlin und 8000 München SZ WIRE METHOD AND DEVICE FOR IMPLEMENTING IT
    DE3529085C2 (en) * 1985-08-14 1993-10-21 Philips Patentverwaltung Device for reversing stranding (SZ stranding) at least one stranding element of a cable, in particular a stranding element containing optical fibers
    FI78576C (en) * 1986-04-01 1989-08-10 Nokia Oy Ab FOERFARANDE OCH ANORDNING FOER VAEXELRIKTNINGSTVINNING.
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    AU5828194A (en) * 1993-01-15 1994-09-26 Bergsmann, Ludwig Device for stranding cables
    DE19505567A1 (en) * 1994-04-06 1995-10-12 Frisch Kabel Verseilmaschf Faster, longer length, reversible cabling appts. with low downtime

    Also Published As

    Publication number Publication date
    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
    EP0756290A1 (en) 1997-01-29

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