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EP0015223A1 - Machine for tying wire coils - Google Patents

Machine for tying wire coils Download PDF

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Publication number
EP0015223A1
EP0015223A1 EP80630006A EP80630006A EP0015223A1 EP 0015223 A1 EP0015223 A1 EP 0015223A1 EP 80630006 A EP80630006 A EP 80630006A EP 80630006 A EP80630006 A EP 80630006A EP 0015223 A1 EP0015223 A1 EP 0015223A1
Authority
EP
European Patent Office
Prior art keywords
coil
link
point
support
machine according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80630006A
Other languages
German (de)
French (fr)
Other versions
EP0015223B1 (en
Inventor
Hubert Elineau
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.)
Cessione jubert Elineau
Original Assignee
MECANARBED Sarl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MECANARBED Sarl filed Critical MECANARBED Sarl
Priority to AT80630006T priority Critical patent/ATE2946T1/en
Publication of EP0015223A1 publication Critical patent/EP0015223A1/en
Application granted granted Critical
Publication of EP0015223B1 publication Critical patent/EP0015223B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/28—Securing ends of binding material by twisting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
    • B65B27/06—Bundling coils of wire or like annular objects

Definitions

  • the present invention relates to a machine for tying spools of metal wire, manufactured in particular in metallurgical factories.
  • Tying devices are known in which clamps can be moved parallel to the axis of the coil, outside and inside thereof, so as to form a loop around the coil with a wire. tying, the two ends of this loop then being twisted.
  • This carriage is movable in translation parallel to the axis of the coil, and means are provided for passing one arm externally to the coil, and the other arm internally to this coil.
  • This arrangement makes it possible to pass the link on the internal face and on the external face of the wall of the coil.
  • tie arms are satisfactory in most cases. However, these arms risk being damaged when the coil is irregular (which is often the case), poorly positioned opposite these ligating arms, or when this coil comprises wires protruding into the inner cylindrical space of the coil.
  • the twisting means of this machine comprise a mandrel movable in translation and in rotation, and comprising a head arranged to receive the two ends of the link, as well as a counterplate disposed opposite the head of the mandrel to maintain the link during rotation of the mandrel.
  • This twisting device makes it possible to tighten the link between the mandrel and the counter plate, the latter remaining fixed during the twisting.
  • this twisting device does not allow very effective tightening of the links against the wall of the coil.
  • the object of the invention is to remedy the drawbacks of known devices, by creating a relatively simple construction machine which allows the coiling of coils of metal wire in a rapid and secure manner.
  • this machine comprising means for placing links around the coil, and means for twisting the free ends of these links, is characterized in that it comprises a substantially planar support comprising a recess, a guide- link defining a closed path extending around this recess, means for moving the support towards the coil in order to engage the wall of this coil in the aforementioned recess of the support, means for fixing one end of the link at a point located between the bottom of the support recess and the adjacent end of the wall of the spool, in that the link guide comprises means for hooking the link at a point located near the above-mentioned fixed point and means for cause this point of attachment of the link along the closed path of the link guide, and in that means are provided for cutting this link at a point situated between the wall of the coil and the aforementioned attachment point of the link.
  • the link is driven by the link guide, along the path which extends all around the wall of the coil.
  • the attachment point of the link returns to its initial position, so that this link forms a loop around the wall of the coil. It then suffices to cut this link downstream from its point of attachment to the link guide, then to twist the two free ends of the link against the adjacent end of the wall of the coil.
  • the aforementioned support and its link guide are not likely to be damaged during the translation of the recess of this support relative to the wall of the coil.
  • the link guide defines a circular path around the wall of the coil.
  • Such. circular route can be achieved using simple means.
  • the means for hooking and driving the link along the aforementioned circular path comprise a ring mounted in rotation about an axis perpendicular to the support, this ring having an opening which is located opposite the 'entry of the recess, when this ring is in the rest position, and this ring carries at least one roller for the attachment of the link.
  • the opening of this ring allows the engagement of the wall of the coil in the recess of the support.
  • This ring preferably carries several rollers which make it possible to guide the link upstream from its point of attachment to the ring, along the circular path determined by the ring.
  • the machine according to the invention comprises means for rotating the coil engaged in the recess of the support.
  • the machine comprises two substantially planar supports each comprising a link guide, these supports being arranged substantially in a diametral plane of the coil.
  • the machine according to the invention also comprises means for cutting the ends of the link and for twisting these ends against the wall of the coil.
  • the means for cutting the link are carried, preferably, by a rotary mandrel whose twisting end has a diametrical groove adapted to receive the ends of the link.
  • This diametral groove is used to twist these ends of the wire.
  • the twisting means further comprise two plates arranged on either side of the axis of the mandrel, and movable towards this axis, in a plane situated between the twisting end of the mandrel and the wall of the coil, this plane passing substantially through the crossing point of the ends of the link.
  • the machine for binding spools of metal wire advantageously comprises, in combination, means for compacting the spool before it is tied up.
  • These compacting means comprise two pressing plates movable axially towards the coil.
  • these two pressing plates comprise means for advancing them towards the opposite ends of the coil at identical speeds and symmetrically with respect to this coil.
  • the machine according to the invention is a compactor-ligator, that is to say that it comprises, in combination, means for compacting coils of metal wire, and means for laying ties around these coils.
  • the coil 1 of metallic wire for example of iron wire
  • the hook 2 of a conveyor (not shown), between the space 3 comprised between two vertical pressure plates 4 and 5, mounted on carriages movable in translation by rollers 4a and 5a.
  • the coil 1 Before compaction, the coil 1 has a longitudinal trapezoidal section (non-hatched part of the coil shown in Figure 1) because the turns of this coil are relatively loose.
  • the pressing plates 4 and 5 are associated with means making it possible to advance them at identical speeds and symmetrically with respect to the coil 1.
  • these means comprise two identical hydraulic cylinders 6 and 7, fixed to the frame 8 of the machine.
  • the rods 9 and 10 of these jacks 6 and 7 are made integral respectively with the pressure plates 4 and 5.
  • the pistons 11 and 12 are offset longitudinally relative to their respective chambers 13, 14, so that when the rod 9 or 10 of one of the jacks 6 or 7 is in the retracted position, the rod 9 or 10 of the other cylinder is in the released position.
  • the displacement of the pistons 11 and 12 is carried out in opposite direction, one with respect to the other, by volume transfer from hydraulic fluid 16 contained in one of the chambers 13 or 14 of the jacks 6 or 7 towards the other chamber 13 or 14 of these jacks.
  • the compactor according to the invention thus makes it possible to significantly increase the production rate of the compacted coils, without additional energy consumption.
  • the compactor according to the invention also makes it possible to obtain perfect regularity in the compaction of the coils 1, which is likely to considerably facilitate the subsequent ligating operations.
  • the compactor according to the invention also has the advantage of allowing the compaction of the reel 1, without it being necessary to remove the reel 1 from the hook 2. In fact, during this compaction, this hook 2 can engage in recesses 4b and 5b formed behind the pressure plates 4 and 5 (see Figure 2).
  • the machine according to the invention further comprises means for compacting the coil 1 in two stages of successive compression, separated by a step of decompression of the coil 1.
  • the coils are compacted under a pressure corresponding to a thrust of 30 to 50 tonnes exerted by the pressing plates 4 and 5, then these coils 1 are decompressed to obtain an extension of their length by approximately 10% .
  • the coils 1 are then again compacted at the aforementioned compacting pressure.
  • the fully compacted coil is shown in Figure 1 by the hatched portion 1a.
  • these means for placing links around the coil 1 firstly comprise a plane support 20 movable in translation relative to the coil 1. In the inactive position, this plane support 20 is housed at the rear of the pressure plate 4, as shown in Figure 1.
  • this planar support 20 The translation of this planar support 20 towards the coil 1 and towards the pressure plate 5 is controlled by a hydraulic cylinder 21 fixed to the frame 8 of the machinc. In the example shown, this planar support 20 can be moved in a horizontal plane passing substantially through the axis of the coil 1.
  • the planar support 20 comprises two link guides 22, 23, identical, defining circular paths.
  • link guides 22, 23 extend around two recesses 24, 25, substantially rectangular, parallel between them, with the axis of the coil 1 and with the direction of movement of the plane support 20.
  • each link guide 22 or 23 comprises a series of rollers 27 regularly distributed around the circular path defined by the link guide 22 or 23. These rollers 27 are fixed on a split ring 28, the slot defining an opening 29 which is located opposite the entrance to the recess 24 of the support 20, when the link guide 22 is in the inactive position.
  • This split ring 28 is relatively thin and it rests on the support 20.
  • the machine further comprises means for fixing the link 36 at a point A situated between the bottom 24a of the recess 24 and the adjacent end 26a of the wall 26 of the coil 1.
  • this fixed point A is located behind the axis XX 'relative to the direction of rotation of the ring 28 (see arrow F in Figure 5).
  • This fixed point A can be obtained by a clamp 37 (see Figure 9), maintaining the end A of the link 36.
  • the link guide 22 also includes means for hooking the link 36 at a point B, located opposite the fixed point A, relative to the axis XX '.
  • these coupling means are constituted by the roller 27a, the link 36 being wound partially around 0 this roller 27a.
  • the link 36 is stretched between the fixed point A, around the roller 27a and around three pulleys 38, by means of a tensioner 39.
  • This tensioner 39 comprises a fixed disc 40 and a wheel 41 rotatably mounted about an axis YY 'centered on the disc 40.
  • the link 36 is wound in a clockwise direction around this pulley 40, then is wound in a loop in opposite directions on a series of rollers 42 arranged on the periphery of the wheel 41.
  • the tension exerted on the 3G link, between the tensioner 39 and the fixed point A, is produced by means of a spiral spring or the like (not shown), inserted between the disc 40 and the wheel 41.
  • the support 20 comprises two recesses 24 and 25, and two link guides 22 and 23, juxtaposed, allowing two links 36 to be placed simultaneously around the wall 26 of the coil 1.
  • the link guides 22 and 23 are situated in planes slightly offset with respect to the axis ZZ ′, so as to allow a partial superimposition of the link guides 22 and 23, and therefore reduce the overall dimensions of the support 20.
  • the coil 1 rests on rollers 43 which can be rotated by a system of pulleys or pinions and an electric motor (not shown).
  • This arrangement allows the coil 1 to turn on even, according to predetermined angular rotations in order to be able to place several pairs of links 36 around the wall 26 of the coil 1, without moving the support 20.
  • rollers 43 are carried by arms 4 4 pivotally mounted on axes 45, 46, so as to allow to properly adjust the position of the coil 1 by ra p port to the recesses 24 and 25 of support 20.
  • the support 20 is then moved towards the coil 1 so that the wall 26 of this coil is completely engaged in the recesses 24 and 25 of the support 20 .
  • the ring 28 is subjected to a complete rotation around its center O, in the direction of the arrow F (see FIG. 5).
  • the portion 36a of the link 36 between the attachment roller 27a and the pulley 38 is wound around the rollers 27 preceding the roller 27a. These rollers 27 thus guide the link 36 along the circular path defined by the ring 28.
  • This mandrel 50 is aligned substantially in the axis XX ′ of the section of the wall 26 of the coil 1, which is surrounded by the link 36, and with the crossing point D of the ends 36c and 36d of the link 36.
  • This rotary mandrel laterally carries an arm 51 comprising a knife 52 which can come into contact with the part 36c of the link 36, during the rotation of this mandrel 50.
  • a fixed knife 53 serves as a support for the portion 36c of the link 36, when the knife 52 is supported on the latter.
  • the mandrel 50 comprises, at its end 50a, adjacent to the end 26a of the wall 26 of the coil, one or more diametric grooves 54 capable of receiving these ends 36c and 36d of the link 36, when the mandrel 50 is moved towards the crossing point D of its ends 36c and 36d of the link 36.
  • the twisting device further comprises two plates 55, disposed on either side of the axis XX 'of rotation of the mandrel 50, and movable towards this axis in a plane located between the head 50a of the mandrel 50, and the wall 26 of the coil 1. This plane also passes through the crossing point D of the ends 36c and 36d of the link 36.
  • the different operating sequences of the machine namely the correct positioning of the coil 1 by means of the pivoting arms 44 carrying the rollers 43, the translation of the support 20 by means of the jack 21, the rotation of the rings 28 of the guides -links 22 and 23, the movement of the clamp 37 towards the fixed point A, the successive rotations of the coil 1, can be controlled in a fully automatic manner, by known means.
  • the link 36 is not likely to seize, or to break, or to be damaged during its travel on the link guides 22 and 23, given that the link 36 describes a circular route devoid of sharp angles, and that this link 36 undergoes practically no friction on the rollers 27.
  • the cutting and twisting device 50 included the cutting arm 51 and the movable plates 55, makes it possible to perform tight twists, properly applied against the wall 26 of the coil 1.
  • the links thus produced therefore do not risk slackening, which is likely to cause considerable difficulties during the transport of the coils 1.
  • the link guides 22 and 23 could define a closed non-circular route, provided that the mode of travel is adapted to the shape of such a route. cementing the roller 27 or other attachment or guiding system for the link 36.
  • the support 20 carrying the link guides 22 and 23 could be rotated about the axis of the coil 1, in order to be able to place several links 36, angularly spaced around this coil, without having to rotate this coil.
  • the support 20 could be fixed, in which case the coil 1 itself could be moved towards this support 20, to engage the wall 26 of this coil 1 in the recesses 24 and 25 of the support 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Wire Bonding (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

La machine pour lier la bobine 1 de fil métallique comprend des moyens pour poser des liens autour de la bobine et des moyens pour torsader et couper les extrémités libres de ces liens. Elle comprend un support 20 sensiblement plan comportant au moins un évidement 24, un guide-lien 22 en forme d'une couronne ouverte définissant un parcours fermé s'étendant autour de cet évidement 24, des moyens 21 pour déplacer le suport 20 vers la bobine 1 afin d'engager la paroi 26 de la bobine 1 dans l'évidement 24 de ce support, des moyens pour fixer une extrémité du lien en un point situé entre le fond de l'évidement 24 du support et l'extrémité adjacente de la paroi 26 de la bobine. Le guide-lien 22 comprend des moyens pour accrocher le lien en un point situé à proximité du point fixe précité et des moyens 27 pour entraîner ce point d'accrochage du lien sous tension le long du parcrous fermé défini par le guide-lien 22.The machine for binding the coil 1 of metal wire comprises means for placing links around the coil and means for twisting and cutting the free ends of these links. It comprises a substantially planar support 20 comprising at least one recess 24, a link guide 22 in the form of an open crown defining a closed path extending around this recess 24, means 21 for moving the support 20 towards the reel 1 in order to engage the wall 26 of the coil 1 in the recess 24 of this support, means for fixing one end of the link at a point situated between the bottom of the recess 24 of the support and the adjacent end of the wall 26 of the coil. The link guide 22 comprises means for hooking the link at a point located close to the above-mentioned fixed point and means 27 for driving this attachment point of the link under tension along the closed hook defined by the link guide 22.

Description

La présente invention concerne une machine pour lier les bobines de fil métallique, fabriquées notamment dans les usines métallurgiques.The present invention relates to a machine for tying spools of metal wire, manufactured in particular in metallurgical factories.

On connaît des dispositifs de liage dans lesquels des pinces peuvent être déplacées parallèlement à l'axe de la bobine, à l'extérieur et à l'intérieur de celle-ci, de manière à former une boucle autour de la bobine avec un fil de ligaturage, les deux extrémités de cette boucle étant ensuite torsadées.Tying devices are known in which clamps can be moved parallel to the axis of the coil, outside and inside thereof, so as to form a loop around the coil with a wire. tying, the two ends of this loop then being twisted.

On connaît aussi des machines qui réalisent ce liage par pose de deux liens parallèles entre eux, l'un à l'extérieur de la bobine, l'autre à l'intérieur, puis torsadage de ces liens aux deux extrémités de la bobine.Also known are machines which carry out this binding by laying two parallel links together, one outside the coil, the other inside, then twisting these links at the two ends of the coil.

D'autres machines connues comportent des goulottes de guidage dans lesquelles le lien est poussé en direction d'une tête de torsadage.Other known machines include guide troughs in which the link is pushed in the direction of a twisting head.

Ces machines présentent un certain nombre d'inconvénients : le temps de pose du lien est généralement assez long, donc peu compatible avec la vitesse de production des bobines à lier.These machines have a certain number of drawbacks: the bonding time is generally quite long, therefore not very compatible with the production speed of the coils to be tied.

La propulsion du fil de liage dans des goulottes de guidage entraîne un écrouissage de ce fil qui peut provoquer la rupture du fil au moment du ligaturagc. Il est possible d'utiliser un fil recuit pour éviter cet inconvénient, mais le coût du liage en serait alors beaucoup trop élevé.The propulsion of the binding wire in guide troughs causes the wire to work hard, which can cause the wire to break at the time of binding. It is possible to use an annealed wire to avoid this drawback, but the cost of tying would then be much too high.

De plus, les goulottes de guidage subissent une usure importante, et les systèmes d'ouverture de ces goulottes, pour libérer le fil de liage et le serrer autour de la bobine, sont complexes et onéreux. Par ailleurs, la résistance mécanique des ligaturages obtenus et la présentation des torsades sont relativement peu satisfaisnmtes Les extrémités trop saillantes et non rabattues de ces torsades peuvent, en effet, provoquer des accidents et compliquer la manutention des bobines liées.In addition, the guide troughs undergo significant wear, and the opening systems of these troughs, to release the binding wire and tighten it around the spool, are complex and expensive. Furthermore, the mechanical strength of the ligatures obtained and the presentation of the twists are relatively unsatisfactory. The excessively protruding and non-folded ends of these twists can, in fact, cause accidents and complicate the handling of the linked coils.

Dans le brevet français N° 2 186 000 du déposant on a décrit un dispositif de liage de bobines de fil métallique comprenant des bras de ligaturage équipés de pinces pour saisir l'extrémité du lien et montés rotativement autour d'un axe supporté par un chariot.In French patent No. 2,186,000 of the applicant, a device for tying spools of metal wire has been described comprising ligating arms equipped with clamps for gripping the end of the link and mounted rotatably around an axis supported by a carriage. .

Ce chariot est déplaçable en translation parallèlement à l'axe de la bobine, et des moyens sont prévus pour faire passer un bras extérieurement à la bobine, et l'autre bras intérieurement à cette bobine.This carriage is movable in translation parallel to the axis of the coil, and means are provided for passing one arm externally to the coil, and the other arm internally to this coil.

Cet agencement permet de faire passer le lien sur la face interne et sur la face externe de la paroi de la bobine.This arrangement makes it possible to pass the link on the internal face and on the external face of the wall of the coil.

Ces bras de ligaturage donnent satisfaction dans la plupart des cas. Toutefois, ces bras risquent d'être endommagés lorsque la bobine est irrégulière (ce qui est souvent le cas), mal positionnée en regard de ces bras de ligaturage, ou lorsque cette bobine comprend des fils faisant saillie dans l'espace cylindrique intorne de la bobine.These tie arms are satisfactory in most cases. However, these arms risk being damaged when the coil is irregular (which is often the case), poorly positioned opposite these ligating arms, or when this coil comprises wires protruding into the inner cylindrical space of the coil.

Dans le brevet français N° 2 186 000, on a également décrit une machine permettant de torsader les extrémités des liens posés autour de la paroi de la bobine. Les moyens de torsadage de cette machine comprennent un mandrin mobile en translation et en rotation, et comportant une tête agencée pour recevoir les deux extrémités du lien, ainsi qu'une contre-plaque disposée en regard de la tête du mandrin pour maintenir le lien pendant la rotation du mandrin.In French Patent No. 2,186,000, a machine has also been described making it possible to twist the ends of the links placed around the wall of the coil. The twisting means of this machine comprise a mandrel movable in translation and in rotation, and comprising a head arranged to receive the two ends of the link, as well as a counterplate disposed opposite the head of the mandrel to maintain the link during rotation of the mandrel.

Ce dispositif de torsadage permet de serrer le lien entre le mandrin et la contre-plaque, cette dernière restant fixe pendant le torsadage.This twisting device makes it possible to tighten the link between the mandrel and the counter plate, the latter remaining fixed during the twisting.

Du fait de la présence de cette contre-plaque, ce dispositif de torsadage ne permet pas d'obtenir un serrage très efficace des liens contre la paroi de la bobine.Due to the presence of this counter plate, this twisting device does not allow very effective tightening of the links against the wall of the coil.

Le but de l'invention est de remédier aux inconvénients des dispositifs connus, en créant une machine de construction relativement simple qui permet le liage des bobines de fil métallique d'une façon rapide et sùre.The object of the invention is to remedy the drawbacks of known devices, by creating a relatively simple construction machine which allows the coiling of coils of metal wire in a rapid and secure manner.

Suivant l'invention, cette machine comprenant des moyens pour poser des liens autour de la bobine, et des moyens pour torsader les extrémités libres de ces liens, est caractérisée en ce qu'elle comprend un support sensiblement plan comportant un évidement, un guide-lien définissant un parcours fermé s'étendant autour de cet évidement, des moyens pour déplacer le support vers la bobine afin d'engager la paroi de cette bobine dans l'évidement précité du support, des moyens pour fixer une extrémité du lien en un point situé entre le fond de l'évidement du support et l'extrémité adjacente de la paroi de la bobine, en ce que le guide-lien comprend des moyens pour accrocher le lien en un point situé à proximité du point fixe précité et des moyens pour entraîner ce point d'accrochage du lien le long du parcours fermé du guide-lien, et en ce que des moyens sont prévus pour couper ce lien en un point situé entre la paroi de la bobine et le point d'accrochage précité du lien.According to the invention, this machine comprising means for placing links around the coil, and means for twisting the free ends of these links, is characterized in that it comprises a substantially planar support comprising a recess, a guide- link defining a closed path extending around this recess, means for moving the support towards the coil in order to engage the wall of this coil in the aforementioned recess of the support, means for fixing one end of the link at a point located between the bottom of the support recess and the adjacent end of the wall of the spool, in that the link guide comprises means for hooking the link at a point located near the above-mentioned fixed point and means for cause this point of attachment of the link along the closed path of the link guide, and in that means are provided for cutting this link at a point situated between the wall of the coil and the aforementioned attachment point of the link.

La paroi de la bobine étant engagée dans l'évidement du support, le lien est entraîné par le guide-lien, le long du parcours qui s'étend tout autour de la paroi de la bobine. En fin de parcours, le point d'accrochage du lien revient à sa position initiale, de sorte que ce lien forme une boucle autour de la paroi de la bobine. Il suffit ensuite de couper ce lien en aval de son point d'accrochage au guide-lien, puis de torsader les deux extrémités libres du lien contre l'extrémité adjacente de la paroi de la bobine.The wall of the coil being engaged in the recess of the support, the link is driven by the link guide, along the path which extends all around the wall of the coil. At the end of the journey, the attachment point of the link returns to its initial position, so that this link forms a loop around the wall of the coil. It then suffices to cut this link downstream from its point of attachment to the link guide, then to twist the two free ends of the link against the adjacent end of the wall of the coil.

Le support précité et son guide-lien ne risquent pas d'être endommagés, lors de la translation de l'évidement de ce support relativement à la paroi de la bobine.The aforementioned support and its link guide are not likely to be damaged during the translation of the recess of this support relative to the wall of the coil.

L'expérience a montré, de plus, que la machine conforme à l'invention, permettait d'obtenir un liage particulièrement rapide et sûr.Experience has shown, moreover, that the machine according to the invention makes it possible to obtain a particularly fast and safe binding.

Selon une version préférée de l'invention, le guide-lien définit un parcours circulaire autour de la paroi de la bobine. Un tel. parcours circulaire peut être réalisé à l'aide de moyens simples.According to a preferred version of the invention, the link guide defines a circular path around the wall of the coil. Such. circular route can be achieved using simple means.

Selon une version avantageuse de l'invention, les moyens pour accrocher et entraîner le lien le long du parcours circulaire précité comprennent une bague montée en rotation autour d'un axe perpendiculaire au support, cette bague présentant une ouverture qui est située en regard de l'entrée de l'évidement, lorsque cette bague est en position de repos, et cette bague porte au moins un galet pour l'accrochage du lien. L'ouverture de cette bague permet l'engagement de la paroi de la bobine dans l'évidement du support.According to an advantageous version of the invention, the means for hooking and driving the link along the aforementioned circular path comprise a ring mounted in rotation about an axis perpendicular to the support, this ring having an opening which is located opposite the 'entry of the recess, when this ring is in the rest position, and this ring carries at least one roller for the attachment of the link. The opening of this ring allows the engagement of the wall of the coil in the recess of the support.

Cette bague porte, de préférence, plusieurs galets qui permettent de guider le lien en amont de son point d'accrochage à la bague, le long de la trajectoire circulaire déterminée par la bague.This ring preferably carries several rollers which make it possible to guide the link upstream from its point of attachment to the ring, along the circular path determined by the ring.

De préférence, la machine conforme à l'invention comprend des moyens pour entraîner en rotation la bobine engagée dans l'évidement du support.Preferably, the machine according to the invention comprises means for rotating the coil engaged in the recess of the support.

Ainsi, après la pose d'un premier lien, il suffit de faire subir à la bobine des rotations angulaires. successives pour pouvoir poser d'autres liens, sans avoir à modifier la position du support par rapport à la bobine.Thus, after the installation of a first link, it suffices to subject the coil to angular rotations. successive to be able to ask other links, without having to change the position of the support relative to the coil.

Dans une version avantageuse de l'invention, la machine comprend deux supports sensiblement plans comprenant chacun un guide-lien, ces supports étant disposés sensiblement dans un plan diamétral de la bobine. Ainsi, il est possible de poser simultanément deux liens dutour de la paroi de la bobine, en des zoncs diamétralement opposées de cette dernière.In an advantageous version of the invention, the machine comprises two substantially planar supports each comprising a link guide, these supports being arranged substantially in a diametral plane of the coil. Thus, it is possible to simultaneously install two links around the wall of the coil, in diametrically opposite zones of the latter.

La machine conforme à l'invention comporte également des moyens pour couper les extrémités du lien et pour torsader ces extrémités contre la paroi de la bobine.The machine according to the invention also comprises means for cutting the ends of the link and for twisting these ends against the wall of the coil.

Les moyens pour couper le lien sont portés, de préférence, par un mandrin rotatif dont l'extrémité de torsadage comporte une gorge diamétrale adaptée à recevoir les extrémités du lien.The means for cutting the link are carried, preferably, by a rotary mandrel whose twisting end has a diametrical groove adapted to receive the ends of the link.

Cette gorge diamétrale sert à torsader ces extrémités du fil.This diametral groove is used to twist these ends of the wire.

De préférence, les moyens de torsadage comprennent, en outre, deux plaques disposées de part et d'autre de l'axe du mandrin, et mobiles vers cet axe, dans un plan situé entre l'extrémité de torsadage du mandrin et la paroi de la bobine, ce plan passant sensiblement par le point de croisement des extrémités du lien.Preferably, the twisting means further comprise two plates arranged on either side of the axis of the mandrel, and movable towards this axis, in a plane situated between the twisting end of the mandrel and the wall of the coil, this plane passing substantially through the crossing point of the ends of the link.

Ces plaques permettent, lors du torsadage, d'appliquer fortement les extrémités du lien contre la paroi de la bobine, de sorte qu'on obtient ainsi un lien très croise en serré et de reœntrer le /des liens bien dans l'axe de la tête de toisadnge.These plates allow, during twisting, to strongly apply the ends of the link against the wall of the coil, so that a very tight tight crossover is obtained and to re-enter the link (s) well in the axis of the head of toisadnge.

La machine à lier des bobines de fil métallique comprend avantageusement, en combinaison, des moyens pour compacter la bobine avant ligaturage de celle-ci.The machine for binding spools of metal wire advantageously comprises, in combination, means for compacting the spool before it is tied up.

Ces moyens de compactage comprennent deux plateaux presseurs mobiles axialement vers la bobine.These compacting means comprise two pressing plates movable axially towards the coil.

Suivant l'invention, ces deux plateaux presseurs comprennent des moyens pour les faire avancer vers les extrémités opposées de la bobine à des vitesses identiques et de façon symétrique par rapport à cette bobine.According to the invention, these two pressing plates comprise means for advancing them towards the opposite ends of the coil at identical speeds and symmetrically with respect to this coil.

L'expérience a montré que cette disposition permettait d'obtenir une parfaite régularité du compactage, contrairement au cas des appareils de compactage connus qui comprennent un plateau fixe et un plateau mobile.Experience has shown that this arrangement makes it possible to obtain perfect regularity of compaction, unlike the case of known compaction devices which comprise a fixed plate and a mobile plate.

La parfaite régularité du compactage obtenu contribue considérablement à la bonne tenue des liens posés autour des bobines.The perfect regularity of the compaction obtained contributes considerably to the good resistance of the links laid around the coils.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will appear in the description below.

Aux dessins annexés, donnés à titre d'exemples non limitatifs :

  • - la Figure 1 est une vue en élévation d'une machine conforme à l'invention, une bobine de fil métallique étant présentée dans cette machine,
  • - la Figure 2 est une vue schématique en coupe longitudinale partielle des deux vérins de commande des plateaux presseurs de la machine conforme à l'invention,
  • - la Figure 3 est une vue de dessus de la machine selon la Figure 1, le support comportant les guide-liens étant en position de service, le crochet de manutention de la bobine étant enlevé dans un but de clarté,
  • - la Figure 4 est une vue en coupe suivant le plan IV-IV de la Figure 3,
  • - la Figure 5 est une vue de dessus à échelle agrandie et avec arrachement d'un support de guide-lien et du tendeur, le support étant en position de service, avant la pose d'un lien,
  • - la Figure 6 est une vue en coupe suivant le plan VI-VI de la Figure 5,
  • - la Figure 7 est une vue analogue à la Figure 5, après la pose d'un lien,
  • - la Figure 8 est une vue en coupe, suivant le plan VIII-VIII de la Figure 7,
  • - la Figure 9 est une vue en plan à grande échelle du dispositif de découpe et de torsadage des extrémités du lien posé autour de la bobine.
In the appended drawings, given by way of nonlimiting examples:
  • FIG. 1 is an elevation view of a machine according to the invention, a coil of metal wire being presented in this machine,
  • FIG. 2 is a schematic view in partial longitudinal section of the two actuating cylinders for the pressure plates of the machine according to the invention,
  • FIG. 3 is a top view of the machine according to FIG. 1, the support comprising the link guides being in the service position, the handling hook of the spool being removed for clarity,
  • FIG. 4 is a sectional view along the plane IV-IV of FIG. 3,
  • FIG. 5 is a top view on an enlarged scale and with parts broken away of a link guide support and of the tensioner, the support being in the service position, before the installation of a link,
  • FIG. 6 is a sectional view along the plane VI-VI of FIG. 5,
  • - Figure 7 is a view similar to Figure 5, after the installation of a link,
  • FIG. 8 is a sectional view, along the plane VIII-VIII of FIG. 7,
  • - Figure 9 is a large-scale plan view of the device for cutting and twisting the ends of the link placed around the coil.

Dans l'exemple de réalisation représente sur les Figures annexées, la machine conforme à l'invention est une compacteuse-ligatureuse, c'est-à-dire qu'elle comporte, en combinaison, des moyens pour compacter des bobines de fil métallique, et des moyens pour poser des liens autour de ces bobines.In the embodiment shown in the appended figures, the machine according to the invention is a compactor-ligator, that is to say that it comprises, in combination, means for compacting coils of metal wire, and means for laying ties around these coils.

On décrira tout d'abord les moyens pour compacter les bobines de fil métallique, étant donné que l'opération de compactage intervient avant le ligaturage de ces bobines.We will first describe the means for compacting the coils of metal wire, since the compacting operation takes place before the binding of these coils.

En référence à la Figure 1, la bobine 1 de fil métallique, par exemple en fil de fer, est amenée, portée par le crochet 2 d'un convoyeur (non représenté), entre l'espace 3 compris entre deux plateaux presseurs verticaux 4 et 5, montés sur des chariots mobiles en translation grâce à des rouleaux 4a et 5a.With reference to FIG. 1, the coil 1 of metallic wire, for example of iron wire, is brought, carried by the hook 2 of a conveyor (not shown), between the space 3 comprised between two vertical pressure plates 4 and 5, mounted on carriages movable in translation by rollers 4a and 5a.

Avant compactage, la bobine 1 présente une section longitudinale en trapèze (partie non hachurée de la bobine représentée sur la Figure 1) du fait que les spires de cette bobine sont relativement lâches.Before compaction, the coil 1 has a longitudinal trapezoidal section (non-hatched part of the coil shown in Figure 1) because the turns of this coil are relatively loose.

Conformément à l'invention, les plateaux presseurs 4 et 5 sont associés à des moyens permettant de les faire avancer à des vitesses identiques et symétriquement par rapport à la bobine 1.According to the invention, the pressing plates 4 and 5 are associated with means making it possible to advance them at identical speeds and symmetrically with respect to the coil 1.

Dans l'exemple représenté, ces moyens comprennent deux vérins hydrauliques 6 et 7 identiques, fixés au bâti 8 de la machine. Les tiges 9 et 10 de ces vérins 6 et 7 sont rendues solidaires respectivement des plateaux presseurs 4 et 5.In the example shown, these means comprise two identical hydraulic cylinders 6 and 7, fixed to the frame 8 of the machine. The rods 9 and 10 of these jacks 6 and 7 are made integral respectively with the pressure plates 4 and 5.

Les pistons 11 et 12 (voir Figure 2) sont décales longrbudinalement par rapport à leur chambre 13, 14 respective, de façon telle que lorsque la tige 9 ou 10 de l'un des vérins 6 ou 7 est en position rétractée, la tige 9 ou 10 de l'autre vérin est en position dégagée. Les extrémités 13a et 13b des chambres 13 et 14 des vérins 6 et 7, situées du côté des tiges 9 et 10 des pistons 11 et 12, communiquent entre elles par une tubulure 15. Ainsi, le déplacement des pistons 11 et 12 est réalisé en sens inverse, l'un par rapport à l'autre, par transfert de volume du fluide hydraulique 16 contenu dans l'une des chambres 13 ou 14 des vérins 6 ou 7 vers l'autre chambre 13 ou 14 de ces vérins.The pistons 11 and 12 (see Figure 2) are offset longitudinally relative to their respective chambers 13, 14, so that when the rod 9 or 10 of one of the jacks 6 or 7 is in the retracted position, the rod 9 or 10 of the other cylinder is in the released position. The ends 13a and 13b of the chambers 13 and 14 of the jacks 6 and 7, located on the side of the rods 9 and 10 of the pistons 11 and 12, communicate with one another by a tube 15. Thus, the displacement of the pistons 11 and 12 is carried out in opposite direction, one with respect to the other, by volume transfer from hydraulic fluid 16 contained in one of the chambers 13 or 14 of the jacks 6 or 7 towards the other chamber 13 or 14 of these jacks.

De ce fait, les vitesses de déplacement vers la bobine 1 des plateaux presseurs 4 et 5 sont rigoureusement identiques. Si on désigne par v la vitesse de déplacement des tiges 9 et 10 des vérins b et 7, on constate que la vitesse du déplacement des plateaux presseurs 4 et 5, par rapport à la bobine 1, est globalement égale à 2v. Cette vitesse est donc doublée par rapport aux réalisations antérieures comportant un plateau presseur fixe et un plateau mobile sous l'action d'un seul vérin hydraulique.As a result, the speeds of movement towards the coil 1 of the pressing plates 4 and 5 are strictly identical. If v denotes the speed of movement of the rods 9 and 10 of the cylinders b and 7, it can be seen that the speed of movement of the pressing plates 4 and 5, relative to the coil 1, is generally equal to 2v. This speed is therefore doubled compared to previous embodiments comprising a fixed pressure plate and a mobile plate under the action of a single hydraulic cylinder.

La compacteuse conforme à l'invention permet ainsi d'augmenter notablement la cadence de production des bobines compactées, sans consommation d'énergie supplémentaire.The compactor according to the invention thus makes it possible to significantly increase the production rate of the compacted coils, without additional energy consumption.

Par ailleurs, le fait de faire avancer les plateaux presseurs 4 et 5 à des vitesses identiques, symétriquement par rapport à la bobine 1, résout le problème du centrage des bobines 1 par rapport aux plateaux presseurs 4 et 5. Cette opération de centrage des bobines constituait une perte de temps considérable dans les com- pacteuses connues.Furthermore, the fact of advancing the pressure plates 4 and 5 at identical speeds, symmetrically with respect to the coil 1, solves the problem of centering the coils 1 with respect to the pressure plates 4 and 5. This operation of centering the coils was a considerable waste of time in known compactors.

La compacteuse conforme à l'invention permet également d'obtenir une parfaite régularité du compactage des bobines 1, ce qui est de nature à faciliter considérablement les opérations ultérieures de ligaturage.The compactor according to the invention also makes it possible to obtain perfect regularity in the compaction of the coils 1, which is likely to considerably facilitate the subsequent ligating operations.

La compacteuse selon l'invention présente également l'avantage de permettre le compactage de la bobine 1, sans qu'il soit nécessaire de retirer la bobine 1 du crochet 2. En effet, lors de ce compactage, ce crochet 2 peut s'engager dans des évidements 4b et 5b ménagés en arrière des plateaux presseurs 4 et 5 (voir Figure 2).The compactor according to the invention also has the advantage of allowing the compaction of the reel 1, without it being necessary to remove the reel 1 from the hook 2. In fact, during this compaction, this hook 2 can engage in recesses 4b and 5b formed behind the pressure plates 4 and 5 (see Figure 2).

La machine conforme à l'invention comprend, en outre, des moyens pour compacter la bobine 1 en deux étapes de compression successives, séparées par une étape de décompression de la bobine 1.The machine according to the invention further comprises means for compacting the coil 1 in two stages of successive compression, separated by a step of decompression of the coil 1.

Dans les cas les plus courants, on compacte les bobines sous une pression correspondant à une poussée de 30 à 50 tonnes exercée par les plateaux presseurs 4 et 5, puis on décomprime ces bobines 1 pour obtenir une extension de leur longueur d'environ 10 %. On compacte ensuite à nouveau les bobines 1 à la pression de compactage précitée.In the most common cases, the coils are compacted under a pressure corresponding to a thrust of 30 to 50 tonnes exerted by the pressing plates 4 and 5, then these coils 1 are decompressed to obtain an extension of their length by approximately 10% . The coils 1 are then again compacted at the aforementioned compacting pressure.

On constate ainsi ce résultat surprenant que cette seconde opération de compactage permet de réduire la longueur des bobines de 5 à 15 % par rapport à celle résultant d'une seule étape de compactage. Le compactage des bobines se trouve ainsi notablement amélioré.This surprising result is thus observed that this second compacting operation makes it possible to reduce the length of the coils by 5 to 15% compared to that resulting from a single compacting step. The compaction of the coils is thus significantly improved.

Ce résultat peut s'expliquer par le fait que pendant l'étape de décompression, les spires de la bobine trouvent une position d'équilibre favorable, permettant ensuite d'améliorer le taux de compactage.This result can be explained by the fact that during the decompression stage, the turns of the coil find a favorable equilibrium position, which then makes it possible to improve the compaction rate.

La bobine complètement compactée est représentée sur la Figure 1 par la partie hachurée 1a.The fully compacted coil is shown in Figure 1 by the hatched portion 1a.

On va maintenant décrire les moyens pour poser des liens sur une bobine 1 ainsi compactée.We will now describe the means for placing links on a coil 1 thus compacted.

Sur les Figures 3 à 8, ces moyens pour poser des liens autour de la bobine 1 comprennent tout d'abord un support plan 20 mobile en translation relativement à la bobine 1. En position inactive, ce support plan 20 est logé à l'arrière du plateau presseur 4, comme indiqué sur la Figure 1.In Figures 3 to 8, these means for placing links around the coil 1 firstly comprise a plane support 20 movable in translation relative to the coil 1. In the inactive position, this plane support 20 is housed at the rear of the pressure plate 4, as shown in Figure 1.

La translation de ce support plan 20 vers la bobine 1 et vers le plateau presseur 5 est commandée par un vérin hydraulique 21 fixé au bâti 8 de la machinc. Dans l'exemple représenté, ce support plan 20 est déplaçable dans un plan horizontal passant sensiblement par l'axe de la bobine 1.The translation of this planar support 20 towards the coil 1 and towards the pressure plate 5 is controlled by a hydraulic cylinder 21 fixed to the frame 8 of the machinc. In the example shown, this planar support 20 can be moved in a horizontal plane passing substantially through the axis of the coil 1.

Le support plan 20 comporte deux guide-liens 22, 23, identiques, définissant des.parcours circulaires.The planar support 20 comprises two link guides 22, 23, identical, defining circular paths.

Ces guide-liens 22, 23 s'étendent autour de deux évidements 24, 25, sensiblement rectangulaires, parallèles entre.eux, à l'axe de la bobine 1 et à la direction de déplacement du support plan 20.These link guides 22, 23 extend around two recesses 24, 25, substantially rectangular, parallel between them, with the axis of the coil 1 and with the direction of movement of the plane support 20.

Lorsque le support plan 20 est en position de service, comme indiqué sur les Figures 3 à 8, la paroi 26 de la bobine est complètement engagée dans les évidements 24 et 25 de ce support plan 20. Par conséquent, les guide-liens 22 et 23 encerclent complètement la paroi 26 de cette bobine 1 suivant deux sections diamétralement opposées de cette bobine.When the planar support 20 is in the service position, as shown in FIGS. 3 to 8, the wall 26 of the coil is completely engaged in the recesses 24 and 25 of this planar support 20. Consequently, the link guides 22 and 23 completely encircle the wall 26 of this coil 1 in two diametrically opposite sections of this coil.

La structure détaillée des guide-liens 22 et 23 est représentée en détail sur les Figures 5 et 7.The detailed structure of the link guides 22 and 23 is shown in detail in Figures 5 and 7.

On voit sur ces Figures 5 et 7 que chaque guide-lien 22 ou 23 comprend une série de galets 27 régulièrement répartis autour du parcours circulaire défini par le guide-lien 22 ou 23. Ces galets 27 sont fixés sur une bague fendue 28, la fente définissant une ouverture 29 qui est située en regard de l'entrée de l'évidement 24 du support 20, lorsque le guide-lien 22 est en position inactive. Cette bague fendue 28 est relativement mince et elle repose sur le support 20.We see in these Figures 5 and 7 that each link guide 22 or 23 comprises a series of rollers 27 regularly distributed around the circular path defined by the link guide 22 or 23. These rollers 27 are fixed on a split ring 28, the slot defining an opening 29 which is located opposite the entrance to the recess 24 of the support 20, when the link guide 22 is in the inactive position. This split ring 28 is relatively thin and it rests on the support 20.

Des pignons 30, 31, 32 engrènant entre eux et avec la périphérie 33 de la bague 28 permettent d'entrai- ner celle-ci en rotation autour de son axe 0.Sprockets 30, 31, 32 meshing with each other and with the periphery 33 of the ring 28 make it possible to drive the latter in rotation about its axis 0.

Le centrage de la bague 28 sur cet axe O est assuré au moyen de galets 34 qui prennent appui sur le bord intérieur 35 de cette bague 28.The centering of the ring 28 on this axis O is ensured by means of rollers 34 which bear on the inner edge 35 of this ring 28.

La machine comprend, d'autre part, des moyens pour fixer le lien 36 en un point A situé entre le fond 24a de l'évidement 24, et l'extrémité adjacente 26a de la paroi 26 de la bobine 1. Pour des raisons qui seront exposées plus loin, ce point fixe A est situé en arrière de l'axe XX' relativement au sens de la rotation de la bague 28 (voir flèche F de la Figure 5).The machine further comprises means for fixing the link 36 at a point A situated between the bottom 24a of the recess 24 and the adjacent end 26a of the wall 26 of the coil 1. For reasons which will be explained later, this fixed point A is located behind the axis XX 'relative to the direction of rotation of the ring 28 (see arrow F in Figure 5).

Ce point fixe A peut être obtenu par une pince 37 (voir Figure 9), maintenant l'extrémité A du lien 36.This fixed point A can be obtained by a clamp 37 (see Figure 9), maintaining the end A of the link 36.

Le guide-lien 22 comprend également des moyens pour accrocher le lien 36 en un point B, situé à l'opposé du point fixe A, relativement à l'axe XX' . Sur la Figure 5, ces moyens d'accrochage sont constitués par le galet 27a, le lien 36 étant enroulé en partie autour d0 ce galet 27a. Dans l'exemple représenté, le lien 36 est tendu entre le point fixe A, autour du galet 27a et autour de trois poulies 38, au moyen d'un tendeur 39.The link guide 22 also includes means for hooking the link 36 at a point B, located opposite the fixed point A, relative to the axis XX '. In Figure 5, these coupling means are constituted by the roller 27a, the link 36 being wound partially around 0 this roller 27a. In the example shown, the link 36 is stretched between the fixed point A, around the roller 27a and around three pulleys 38, by means of a tensioner 39.

Ce tendeur 39 comprend un disque fixe 40 et une roue 41 montée en rotation autour d'un axe YY' centré sur le disque 40. Le lien 36 est enroulé dans le sens des aiguilles d'une montre autour de cette poulie 40, puis est enroulé en boucle en sens inverse sur une série de galets 42 disposés sur la périphérie de la roue 41.This tensioner 39 comprises a fixed disc 40 and a wheel 41 rotatably mounted about an axis YY 'centered on the disc 40. The link 36 is wound in a clockwise direction around this pulley 40, then is wound in a loop in opposite directions on a series of rollers 42 arranged on the periphery of the wheel 41.

La tension exercée sur le lien 3G, cntre le tendeur 39 et le point fixe A, est réalisée au moyen d'un ressort en spirale ou analogue (non représenté), inséré entre le disque 40 et la roue 41.The tension exerted on the 3G link, between the tensioner 39 and the fixed point A, is produced by means of a spiral spring or the like (not shown), inserted between the disc 40 and the wheel 41.

Sur les Figures 3 et 4, on voit que le support 20 comprend deux évidements 24 et 25, et deux guide-liens 22 et 23, juxtaposés, permettant de poser simultanément deux liens 36 autour de la paroi 26 de la bobine 1. Comme indiqué sur la Figure 4, les guide-liens 22 et 23 sont situés dans des plans légèrement décalés par rapport à l'axe ZZ', de façon à permettre une superposition partielle des guide-liens 22 et 23, et par suite, de réduira l'encombrement en largeur du support 20.In FIGS. 3 and 4, it can be seen that the support 20 comprises two recesses 24 and 25, and two link guides 22 and 23, juxtaposed, allowing two links 36 to be placed simultaneously around the wall 26 of the coil 1. As indicated in FIG. 4, the link guides 22 and 23 are situated in planes slightly offset with respect to the axis ZZ ′, so as to allow a partial superimposition of the link guides 22 and 23, and therefore reduce the overall dimensions of the support 20.

On voit par ailleurs, sur la Figure 4, que la bobine 1 repose sur des rouleaux 43 qui peuvent être en- trainés en rotation par un système de poulies ou de pignons et un moteur électrique (non représenté). Cotte disposition permet de faire tourner la bobine 1 sur clle- même, suivant des rotations angulaires prédéterminées pour pouvoir poser plusieurs paires de liens 36 autour de la paroi 26 de la bobine 1, sans déplacer le support 20.It can also be seen in FIG. 4 that the coil 1 rests on rollers 43 which can be rotated by a system of pulleys or pinions and an electric motor (not shown). This arrangement allows the coil 1 to turn on even, according to predetermined angular rotations in order to be able to place several pairs of links 36 around the wall 26 of the coil 1, without moving the support 20.

Les rouleaux 43 sont portés par des bras 44 montés pivotants sur des axes 45, 46, de facon à permettre d'ajuster correctement la position de la bobine 1 par rap-port aux évidements 24 et 25 du support 20.The rollers 43 are carried by arms 4 4 pivotally mounted on axes 45, 46, so as to allow to properly adjust the position of the coil 1 by ra p port to the recesses 24 and 25 of support 20.

On va maintenant décrire le fonctionnement de la machine à ligaturer que l'on vient de décrire.We will now describe the operation of the ligating machine that has just been described.

Après compactage de la bobine 1, la position de cette dernière dans l'espace 3 est ajustée au moyen des bras pivotants 44 portant les rouleaux 43, le crochet 2 restant engagé dans la bobine 1.After compaction of the coil 1, the position of the latter in space 3 is adjusted by means of the pivoting arms 44 carrying the rollers 43, the hook 2 remaining engaged in the coil 1.

Le support 20 est ensuite déplacé vers la bobine 1 de façon que la paroi 26 de cette bobine soit complètement engagée dans les évidements 24 et 25 du support 20.The support 20 is then moved towards the coil 1 so that the wall 26 of this coil is completely engaged in the recesses 24 and 25 of the support 20 .

On dispose le lien 36 autour des poulies 38, puis autour du galet 27a de la bague 28, puis on fixe l'extrémité du lien en A, au moyen de la pince 37.There is the link 36 around the pulleys 38, then around the roller 27a of the ring 28 and then fixed on the link end A by means of the gripper 3. 7

On fait subir à la bague 28 une rotation complète autour de son centre O, dans le sens de la flèche F (voir Figure 5).The ring 28 is subjected to a complete rotation around its center O, in the direction of the arrow F (see FIG. 5).

Le lien 36, accroché au galet 27a, est ainsi tiré autour de la paroi 26 de la bobine 1 (voir position inter- médiaire en pointillés du lien 36, sur la Figure 5).The link 36, attached to the roller 27a, and is pulled around the wall 26 of the coil 1 (see position i nter- médiaire dotted link 36, in Figure 5).

La portion 36a du lien 36 comprise entre le galet d'accrochage 27a et la poulie 38 s'enroule autour des galets 27 précédant le galet 27a. Ces galets 27 guident ainsi le lien 36 le long du parcours circulaire défini par la bague 28.The portion 36a of the link 36 between the attachment roller 27a and the pulley 38 is wound around the rollers 27 preceding the roller 27a. These rollers 27 thus guide the link 36 along the circular path defined by the ring 28.

Sur la Figure 7, le galet 27a a décrit une rotation complète autour du centre O, et le lien 36 a décrit une boucle complète autour de la paroi 26 de la bobine 1. Cette boucle est serrée, compte tenu de la tension appliquée par le tendeur 39. La portion 36c du lien 36, comprise entre la bobine 1 et la position du galet 27a, croise l'extrémité du lien fixé au point A.In Figure 7, the roller 27a has described a complete rotation around the center O, and the link 36 has described a complete loop around the wall 26 of the coil 1. This loop is tight, taking into account the applied voltage quée by the tensioner 39. The portion 36c of the link 36, between the coil 1 and the position of the roller 27a, crosses the end of the link fixed at point A.

Il suffit ensuite de couper cette portion 36c du lien 36, en un point C symétrique du point fixe A par rapport au point de croisement D des deux portions terminales 36c et 36d du lien 36.It then suffices to cut this portion 36c of the link 36, at a point C symmetrical with the fixed point A with respect to the crossing point D of the two end portions 36c and 36d of the link 36.

Après coupure du lien 36 au point C, l'extrémité libre du lien 36 est maintenue au moyen d'une pince analogue à la pince 37. On fait subir ensuite à la bague 28 une rotation en sens inverse (voir flèche F1) qui la ramène dans sa position initiale, telle que représentée sur la Figure 5. Cette rotation en sens inverse est facilitée par la tension exercée sur le lien 36, au moyen du tendeur 39. Cette rotation a pour effet d'enrouler le lien 36 autour de la roue 41 de ce tendeur 39. La pose d'un nouveau lien 36 autour de la bobine 1 est réalisée comme décrit précédemment, après déplacement de la pince précitée vers le point fixe A.After cutting the link 36 at point C, the free end of the link 36 is held by means of pliers similar to pliers 37. The ring 28 is then subjected to rotation in the opposite direction (see arrow F1) which returns to its initial position, as shown in FIG. 5. This rotation in the opposite direction is facilitated by the tension exerted on the link 36, by means of the tensioner 39. This rotation has the effect of winding the link 36 around the wheel 41 of this tensioner 39. The fitting of a new link 36 around the coil 1 is carried out as described above, after displacement of the aforementioned clamp towards the fixed point A.

Ces opérations de découpe et de torsadage sont réalisées au moyen du mandrin rotatif 50 représenté sur la Figure 9.These cutting and twisting operations are carried out by means of the rotary mandrel 50 shown in FIG. 9.

Ce mandrin 50 est aligné sensiblement dans l'axe XX' de la section de la paroi 26 de la bobine 1, qui est entourée par le lien 36, et avec le point de croisement D des extrémités 36c et 36d du lien 36.This mandrel 50 is aligned substantially in the axis XX ′ of the section of the wall 26 of the coil 1, which is surrounded by the link 36, and with the crossing point D of the ends 36c and 36d of the link 36.

Ce mandrin rotatif porte latéralement un bras 51 comportant un couteau 52 pouvant venir en contact avec la partie 36c du lien 36, lors de la rotation de ce mandrin 50. Un couteau fixe 53 sert de contre-appui pour la portion 36c du lien 36, lorsque le couteau 52 prend appui sur cette dernière.This rotary mandrel laterally carries an arm 51 comprising a knife 52 which can come into contact with the part 36c of the link 36, during the rotation of this mandrel 50. A fixed knife 53 serves as a support for the portion 36c of the link 36, when the knife 52 is supported on the latter.

Pour torsader entre elles les portions 36c et 36d libres du lien 36, le mandrin 50 comporte, sur son extrémité 50a, adjacente à l'extrémité 26 a de la paroi 26 de la bobine, une ou plusieurs gorges 54 diamétrales pouvant recevoir ces extrémités 36c et 36d du lien 36, lorsque le mandrin 50 est déplacé vers le point de croisement D de ses extrémités 36c et 36d du lien 36.To twist the free portions 36c and 36d between them 36, the mandrel 50 comprises, at its end 50a, adjacent to the end 26a of the wall 26 of the coil, one or more diametric grooves 54 capable of receiving these ends 36c and 36d of the link 36, when the mandrel 50 is moved towards the crossing point D of its ends 36c and 36d of the link 36.

Le dispositif de torsadage comprend, en outre, deux plaques 55, disposées de part et d'autre de l'axe XX' de rotation du mandrin 50, et mobiles vers cet axe dans un plan situé entre la tête 50a du mandrin 50, et la paroi 26 de la bobine 1. Ce plan passe, en outre, par le point de croisement D des extrémités 36c et 36d du lien 36.The twisting device further comprises two plates 55, disposed on either side of the axis XX 'of rotation of the mandrel 50, and movable towards this axis in a plane located between the head 50a of the mandrel 50, and the wall 26 of the coil 1. This plane also passes through the crossing point D of the ends 36c and 36d of the link 36.

Pour torsader les extrémités libres 36c et 36d du lien 36 entourant la paroi 26 de la bobine 1, on procède comme suit :

  • On avance le mandrin 50 dans la direction de l'axe XX' vers le point de croisement D des extrémités 36c et 36d du lien 36. On déplace les plaques 55 vers le point de croisement D, ce qui a pour effet, d'une part, d'engager les extrémités 36c et 36d du brin 36 dans l'une des rainures diamétrales du mandrin 50, et d'autre part, de plaquer ces extrémités contie l'extrémité adjacente 26a de la paroi 2G. Le torsadage proprement dit peut être ensuite réalisé en faisant tourner le mandrin 50 autour de l'axe XX'.
To twist the free ends 36c and 36d of the link 36 surrounding the wall 26 of the coil 1, the procedure is as follows:
  • The mandrel 50 is advanced in the direction of the axis XX 'towards the crossing point D of the ends 36c and 36d of the link 36. The plates 55 are moved towards the crossing point D, which has the effect of firstly, to engage the ends 36c and 36d of the strand 36 in one of the diametrical grooves of the mandrel 50, and secondly, to press these ends against the adjacent end 26a of the wall 2G. The actual twisting can then be carried out by rotating the mandrel 50 about the axis XX '.

Bien entendu, les différentes séquences de fonctionnement de la machine, à savoir le positionnement correct de la bobine 1 au moyen des bras pivotants 44 portant les rouleaux 43, la translation du support 20 au moyen du vérin 21, la rotation des bagues 28 des guide-liens 22 et 23, le déplacement de la pince 37 vers le point fixe A, les rotations successives de la bobine 1, peuvent être commandés d'une manière entièrement automatique, par des moyens connus.Of course, the different operating sequences of the machine, namely the correct positioning of the coil 1 by means of the pivoting arms 44 carrying the rollers 43, the translation of the support 20 by means of the jack 21, the rotation of the rings 28 of the guides -links 22 and 23, the movement of the clamp 37 towards the fixed point A, the successive rotations of the coil 1, can be controlled in a fully automatic manner, by known means.

Les avantages de la ligatureuse conforma à l'invention sont nombreux.The advantages of the ligator according to the invention are numerous.

Tout d'abord, les guide-liens 22 et 23 no risquent pas d'être endommagés lors de l'engagement relatif de la paroi 26 de la bobine 1,'et des évidements 24 et 25 du support 20, même lorsque certaines spires de la bobine 1 font saillie dans l'espace cylindrique intérieur de cette bobine:

  • La construction de l'ensemble constitué par le support 20 et des guide-liens 22 et 23 est simple et robuste, étant donné, en particulier, que le support 20 reste fixe pendant toute l'opération de liage de la bobine.
First of all, link guides 22 and 23 no ris not to be damaged during the relative engagement of the wall 26 of the coil 1, 'and of the recesses 24 and 25 of the support 20, even when certain turns of the coil 1 protrude into the internal cylindrical space of this coil:
  • The construction of the assembly constituted by the support 20 and of the link guides 22 and 23 is simple and robust, given, in particular, that the support 20 remains fixed during the whole operation of tying the reel.

Le lien 36 ne risque pas de gripper, ou de se briser, ou d'être détérioré lors de son parcours sur les guide-liens 22 et 23, étant donné que le lien 36 décrit un parcours circulaire dépourvu d'angles vifs, et que ce lien 36 ne subit pratiquement aucun frottement sur les galets 27.The link 36 is not likely to seize, or to break, or to be damaged during its travel on the link guides 22 and 23, given that the link 36 describes a circular route devoid of sharp angles, and that this link 36 undergoes practically no friction on the rollers 27.

De plus, l'ajustement correct de la position relative de la bobine 1 par rapport au support 20, ne pose aucune difficulté et est d'exécution simple, grâce aux rouleaux d'entraînement 43 portés par les bras pivotants 44.In addition, correct adjustment of the relative position of the reel 1 relative to the support 20 does not pose any difficulty and is simple to execute, thanks to the drive rollers 43 carried by the pivoting arms 44.

En outre, le dispositif de découpe et de torsadage 50 comprenait le bras coupant 51 et les plaques mobiles 55, permet d'exécuter des torsadages serrés, bien appliqués contre la paroi 26 de la bobine 1. Les liens ainsi réalisés ne risquent donc pas de se relâcher, ce qui est susceptible de poser des difficultés considérables lors du transport des bobines 1.In addition, the cutting and twisting device 50 included the cutting arm 51 and the movable plates 55, makes it possible to perform tight twists, properly applied against the wall 26 of the coil 1. The links thus produced therefore do not risk slackening, which is likely to cause considerable difficulties during the transport of the coils 1.

Bien entendu, l'invention n'est pas limitée aux exemples que l'on vient de décrire, et on peut apporter à ceux-ci de nombreuses modifications sans sortir du cadre de l'invention.Of course, the invention is not limited to the examples just described, and many modifications can be made to them without departing from the scope of the invention.

Ainsi, les guide-liens 22 et 23 pourraient définir un parcours fermé non circulaire, à condition d'adapter à la forme d'un tel parcours, le mode de déplacement du galet 27 ou autre système d'accrochage ou de guidage du lien 36.Thus, the link guides 22 and 23 could define a closed non-circular route, provided that the mode of travel is adapted to the shape of such a route. cementing the roller 27 or other attachment or guiding system for the link 36.

Le support 20 portant les guide-liens 22 et 23 pourrait être entraîné en rotation autour de l'axe de la bobine 1, pour pouvoir poser plusieurs liens 36, espacés angulairement autour de cette bobine, sans avoir à tourner cette bobine.The support 20 carrying the link guides 22 and 23 could be rotated about the axis of the coil 1, in order to be able to place several links 36, angularly spaced around this coil, without having to rotate this coil.

Par ailleurs, le support 20 pourrait être fixe, auquel cas la bobine 1 elle-même pourrait être déplacée vers ce support 20, pour engager la paroi 26 de cette bobine 1 dans les évidements 24 et 25 du support 20.Furthermore, the support 20 could be fixed, in which case the coil 1 itself could be moved towards this support 20, to engage the wall 26 of this coil 1 in the recesses 24 and 25 of the support 20.

Claims (16)

1. Machine pour lier des bobines de fil métallique comprenant des moyens pour poser des liens autour de la bobine et des moyens pour torsader et couper les extrémités libres de ces liens, caractérisée en ce qu'elle comprend un support sensiblement plan comportant au moins un évidement sensiblement en U, un guide-lien définissant un parcours fermé s'étendant autour de cet évidemnnt, des moyens pour déplacer le support vers la bobine afin d'engager la paroi de la bobine dans l'évidement de ce support, des moyens pour fixer une extrémité du lien en un point situé entre le fond de l'évidement du support et l'extrémité adjacente de la paroi de la bobine, en ce que le guide-lien comprend des moyens pour accrocher le lien en un point situé à proximité du point fixe précité et des moyens pour entraîner ce point d'accrochage du lien le long du parcours fermé défini par le guide-lien, et en ce que des moyens sont prévus pour couper le lien en un point situé entre la paroi de la bobine et le point d'accrochage précité de ce lien.1. Machine for binding spools of metal wire comprising means for placing links around the spool and means for twisting and cutting the free ends of these links, characterized in that it comprises a substantially flat support comprising at least one a substantially U-shaped recess, a link guide defining a closed path extending around this recess, means for moving the support towards the spool in order to engage the wall of the spool in the recess of this support, means for fix one end of the link at a point located between the bottom of the recess of the support and the adjacent end of the wall of the coil, in that the link guide comprises means for hanging the link at a point located nearby the aforementioned fixed point and means for driving this point of attachment of the link along the closed path defined by the link guide, and in that means are provided for cutting the link at a point situated between the wall of the coil and the point t above attachment of this link. 2. Machine conforme à la revendication 1, caractérisée en ce que le guide-lien définit un parcours circulaire autour de la paroi de la bobine.2. Machine according to claim 1, characterized in that the link guide defines a circular path around the wall of the coil. 3. Machine conforme à la revendication 2, caractérisée en ce que les moyens pour accrocher et en- trainerle lien le long du parcours circulaire précité comprennent une bague montée en rotation autour d'un axe perpendiculaire au support, cette bague présentant une ouverture qui est située en regard de l'entrée de l'évidement, lorsque cette bague est en position de repos, et en ce que cette bague comprend au moins un galet permettant d'accrocher le lien.3. Machine according to claim 2, characterized in that the means for hooking and entraining the link along the aforementioned circular path comprise a ring mounted in rotation about an axis perpendicular to the support, this ring having an opening which is located opposite the entrance to the recess, when this ring is in the rest position, and in that this ring comprises at least one roller making it possible to hang the link. 4. Machine conforme à la revendication 3, caractérisée en ce que la bague porte plusieurs galets pour guider le lien en amont de son point d'accrochage à la bague.4. Machine according to claim 3, characterized in that the ring carries several rollers to guide the link upstream of its attachment point to the ring. 5. Machine conforme à l'une quelconque des revendications 1 à 4, caractérisée en ce qu'elle comprend des moyens pour entraîner en rotation la bobine engagée dans l'évidement du support.5. Machine according to any one of claims 1 to 4, characterized in that it comprises means for rotating the coil engaged in the recess of the support. 6. Machine conforme à l'une quelconque des revendications 1 à 5, caractérisée en ce qu'elle comprend deux supports sensiblement plans comprenant chacun un guide-lien, ces supports étant disposés sensiblement dans un plan diamétral de la bobine.6. Machine according to any one of claims 1 to 5, characterized in that it comprises two substantially planar supports each comprising a link guide, these supports being arranged substantially in a diametral plane of the coil. 7. Machine conforme à la revendication 6, caractérisée en ce que les deux supports sont légèrement décalés dans une direction perpendiculaire au plan diamétral de la bobine.7. Machine according to claim 6, characterized in that the two supports are slightly offset in a direction perpendicular to the diametrical plane of the coil. 8. Machine conforme à l'une quelconque des revendications 5 à 7, caractérisée en ce que les moyens pour entraîner en rotation la bobine comprennent des rouleaux rotatifs sur lesquels repose la bobine.8. Machine according to any one of claims 5 to 7, characterized in that the means for rotating the coil comprise rotary rollers on which the coil rests. 9. Machine conforme à la revendication 8, caractérisée en ce que les rouleaux rotatifs sont rendus solidaires de bras pivotants permettant de régler la position de la bobine par rapport au support du ou des guide-fils.9. Machine according to claim 8, characterized in that the rotary rollers are made integral with pivoting arms making it possible to adjust the position of the coil relative to the support of the wire guide (s). 10. Machine conforme à l'une quelconque des revendications 1 à 9, caractérisée en ce que le point fixe de l'une des extrémités du lien est symétrique du point d'accrochage du lien au guide-lien, relativement à un plan passant par le milieu de l'évidement du support et perpendiculaire à ce dernier.10. Machine according to any one of claims 1 to 9, characterized in that the fixed point of one of the ends of the link is symmetrical with the point of attachment of the link to the link guide, relative to a plane passing through the middle of the recess of the support and perpendicular to the latter. 11. Machine conforme à l'une quelconque des revendications 1 à 10, caractérisée en ce qu'elle comprend des moyens pour appliquer une tension au lien en amont de son point d'accrochage au guide-lien.11. Machine according to any one of claims 1 to 10, characterized in that it comprises means for applying a tension to the link upstream of its point of attachment to the link guide. 12. Machine conforme à l'une quelconque des revendications 1 à 11, caractérisée en ce que les moyens pour couper le fil sont Fortes par un mandrin rotatif dont l'extrémité comporte ane gorge diamétrale pouvant recevoir les extrémités ces liens situées entre l'ex trémité de la paroi de la bobine, le point d'accrochage du guide-lien et le point iixe précité.12. Machine according to any one of claims 1 to 11, characterized in that the means to cut the wire are Strong by a rotary mandrel whose end comprises a diametral groove which can receive the ends these links located between the end of the wall of the coil, the point of attachment of the link guide and the point iix cited above. 13. Machine conforme à la revendication 12: caractérisée en ce qu'elle comprend, en outre, deux plaques disposées de part et d'autre de l'axedu mandrin. et mobiles vers cet axe dans un plan situé entre l'extrémité du mandrin et la paroi de la bobine, ce plan passant par le point de croisement des liens.13. Machine according to claim 12: characterized in that it further comprises two plates arranged on either side of the axis of the mandrel. and movable towards this axis in a plane situated between the end of the mandrel and the wall of the coil, this plane passing through the point of crossing of the links. 14. Machine conforme à l'une quelconque des revendications 1 à 13, comprenant en outre des moyens pour compacter la bobine avant ligaturage de celle-ci, ces moyens comportant deux plateaux-presseurs mobiles axialement vers la bobine, caractérisée en ce qu'elle comprend des moyens pour faire avancer ces deux plateaux à des vitesses identiques par rapport à la bobine.14. Machine according to any one of claims 1 to 13, further comprising means for compacting the coil before binding thereof, these means comprising two presser plates movable axially towards the coil, characterized in that it comprises means for advancing these two plates at identical speeds relative to the coil. 15. Machine conforme à la revendication 14, caractérisée en ce que les moyens précités comprenning deux vérins hydrauliques identiques dont les pistons sent dé calés lagitudimicment de façon telle que lorsque la tige ge l'un des pistons est en position rétractée, la tige de l'autre piston est en position dégagée, et en ce que les extrémités adjacentes à la tige du piston des chambres des vérins communiquent entre elles par une tubulure, dr: façon à permettre le déplacement des pistons dos deux vérins par transfert réciproque de volume du fluide hydraulique de l'un des vérins vers l'autre vérin.15. Machine according to claim 14, characterized in that the aforementioned means comprenning two identical hydraulic cylinders whose pistons feel lagged wedge so that when the rod ge one of the pistons is in the retracted position, the rod of l other piston is in the disengaged position, and in that the ends adjacent to the piston rod of the chambers of the jacks communicate with each other by a tube, dr: so as to allow the displacement of the pistons on the two jacks by reciprocal transfer of volume of the fluid hydraulic from one of the cylinders to the other cylinder. 16. Machine confcrme à l'ung quelconque des revendications 14 ou 15, caractérisée en ce qu'elle comprend des moyens pour compncter la bobine en deux étapes dr compression successives sénarées pau une étape de de- comprossion de la bobine.16. Machine confcrme to any of claims 14 or 15, characterized in that it comprises means for compncter the coil in two successive stages of compression senarées pau a de- compossion step of the coil.
EP80630006A 1979-02-22 1980-02-06 Machine for tying wire coils Expired EP0015223B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80630006T ATE2946T1 (en) 1979-02-22 1980-02-06 DEVICE FOR TYING COILS OF WIRE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7904535 1979-02-22
FR7904535A FR2429150A1 (en) 1979-02-22 1979-02-22 MACHINE FOR BINDING WIRE COILS

Publications (2)

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EP0015223A1 true EP0015223A1 (en) 1980-09-03
EP0015223B1 EP0015223B1 (en) 1983-04-06

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EP80630006A Expired EP0015223B1 (en) 1979-02-22 1980-02-06 Machine for tying wire coils

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US (1) US4301720A (en)
EP (1) EP0015223B1 (en)
JP (1) JPS55154207A (en)
AT (1) ATE2946T1 (en)
CA (1) CA1124635A (en)
DE (1) DE3062566D1 (en)
ES (1) ES488099A1 (en)
FR (1) FR2429150A1 (en)
PT (1) PT70605A (en)

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FR2502582A1 (en) * 1981-03-26 1982-10-01 Grenon Rene TWISTING SYSTEM FOR METALLIC WIRES
US4381704A (en) * 1981-04-15 1983-05-03 Inland Steel Company Method and apparatus for removing irregular lap formations in coils of metal strip
LU84025A1 (en) * 1982-03-19 1983-11-17 Mecan Arbed Dommeldange S A R INSTALLATION FOR LIGATION OF WIRE REELS
JPS6278020A (en) * 1985-09-25 1987-04-10 東陽建設工機株式会社 Bundling device
ATE239662T1 (en) * 1998-10-16 2003-05-15 Maillefer Sa DEVICE FOR HOLDING THE FREE END AND UNLOADING A BUNDLE OF AN ENGAGED ELEMENT
IT1302792B1 (en) * 1998-11-04 2000-09-29 Danieli & C Ohg Sp DEVICE FOR EXTRACTING AND HANDLING HANDS OF LAMINATED PRODUCTS WRAPPED BY A CORRESPONDING SPOOLING MACHINE
KR100617600B1 (en) * 1999-01-29 2006-09-01 고한 고교 가부시키가이샤 Packing device
DE10017908C2 (en) * 2000-04-11 2002-03-07 Schmitz Soehne Gmbh Maschf Method and coil binding machine for tying coil bundles lying on a table
US6701831B2 (en) 2002-03-29 2004-03-09 L & P Property Management Company Apparatus and method for automated binding and spooling of wire cores
US6935665B2 (en) 2002-03-29 2005-08-30 L & P Property Management Co. Apparatus and method for spooling of wire cores
DE602004009518T2 (en) * 2003-12-17 2008-07-31 Société de Technologie Michelin Method and apparatus for conditioning tires in stacks
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FR2186000A5 (en) * 1972-05-23 1974-01-04 Elineau Hubert

Also Published As

Publication number Publication date
JPS55154207A (en) 1980-12-01
DE3062566D1 (en) 1983-05-11
PT70605A (en) 1980-01-01
FR2429150A1 (en) 1980-01-18
US4301720A (en) 1981-11-24
ATE2946T1 (en) 1983-04-15
ES488099A1 (en) 1980-09-16
FR2429150B1 (en) 1982-07-02
EP0015223B1 (en) 1983-04-06
CA1124635A (en) 1982-06-01

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