EP0414599A1 - Binding device with twisting head and binding machine equipped with such devices, especially for binding coils of metal wire - Google Patents

Binding device with twisting head and binding machine equipped with such devices, especially for binding coils of metal wire Download PDF

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Publication number
EP0414599A1
EP0414599A1 EP90402314A EP90402314A EP0414599A1 EP 0414599 A1 EP0414599 A1 EP 0414599A1 EP 90402314 A EP90402314 A EP 90402314A EP 90402314 A EP90402314 A EP 90402314A EP 0414599 A1 EP0414599 A1 EP 0414599A1
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EP
European Patent Office
Prior art keywords
binding
twisting head
head
twisting
devices
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
EP90402314A
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German (de)
French (fr)
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EP0414599B1 (en
Inventor
Jean Bertrand
Jean Joannic
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Botalam SARL
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Botalam SARL
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Publication date
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Priority to AT90402314T priority Critical patent/ATE100402T1/en
Publication of EP0414599A1 publication Critical patent/EP0414599A1/en
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Publication of EP0414599B1 publication Critical patent/EP0414599B1/en
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    • 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 binding device which comprises, on a frame associated with a support structure for an article to be tied, means for the establishment of a flexible link around the latter comprising guide members for bringing its two end strands to be crossed, and a twisting head thereof disposed at the rear of said guide members and formed of a clamp clamp mounted at the end of a rotary body.
  • Such binding devices are found on the compactors-bends of iron wire crowns, in which they are distributed in a circle on a common support, behind the compacting unit.
  • a disadvantage of current compactors is that, in each binding device, the twisting head can, for construction reasons, act only in rotation on the flexible link and this at a great distance, of the order of 60 mm, from the crown of wire to be tied. If this has no consequence on the quality of the bonding of the crowns of wires having a high elasticity which compensates for this twisting game after compaction, it is quite different when the wire is produced by rolling with an increased diameter correspondingly reducing the elasticity of the formed crown. It follows in fact that the insufficiently tight links around the wire ring, often slide along the latter, for example during handling or transport, and that the ring can thus come undone.
  • the present invention has set itself the aim of remedying this drawback and, to do this, it proposes a binding device of the type specified in the introduction, which is characterized in that it comprises means for guiding and driving in translation of the twisting head designed to act on the body of the latter during its rotation, said guide members of the flexible link being erasable in synchronism with the translation of the twisting head.
  • the twisting head can thus, during its rotation, advance in the direction of the ring of thread to be tied, until it approaches it at a distance which is certainly still limited in practice, but sufficiently reduced, by approximately half, to ensure a good quality firm binding in combination with the elasticity of the wire crown, even when the wire is obtained by rolling.
  • said means for guiding and driving in translation comprise a nut integral with the frame, in which is screwed a threaded part of the body of the twisting head, which is also slidably mounted in a coupling member to a means ensuring its drive in rotation.
  • said coupling member is a toothed pinion retained around the body of the twisting head by an axial groove connection and meshing with a driving toothed wheel constituting said rotational drive means.
  • the collet consists of two jaws articulated on the body of the twisting head, each extending beyond their axis of articulation by a rear heel, and is further associated with a jack formed in the body with its rod directed towards the heels of the jaws and ending in a generally conical head intended to engage between the latter, the heels of the jaws of the collet being further recalled to each other at rest.
  • said flexible link guide members are preferably constituted by pivoting thread guide beaks, which intersect in the active position in the translation path of the twisting head and which can be moved cyclically out of the latter by means of tilting.
  • the present invention also relates to a binder of articles of annular shape, in particular to a compactor-binder of wire wreaths, of the type comprising several binding sub-assemblies arranged in a circle on a common support, and which is characterized by that the binding subassemblies are constituted by binding devices as defined above.
  • the latter are oriented in the same direction with their axes substantially parallel to the central axis of the article to be bound and their coupling pinions mesh with a common driving gear.
  • the compactor-binder exemplified in FIG. 1 is formed by a compacting unit proper 1 followed by a binding unit 2.
  • the compacting unit 1 comprises a carriage 3 which, after having received a cylindrical crown of wire to be tied, formed in an upstream winding station, moves it and compresses it against an anvil 4 by passing it around an axial mandrel 5 projecting in front of the latter.
  • the binding unit 2 has four identical binding devices 6 which, as shown in FIG. 2, are bolted at 6a, by their respective frames 7, on one side, facing the anvil 4, a common support 2a on which they are distributed in a circle being mutually offset by 9 °.
  • the tying devices 6 are associated with respective tying wire reels desigrated as a whole by 8. They also have a main working axis X parallel to the axis Y of the mandrel 5 and positioned in the extension of the space for receiving the crown to be bound, defined between the latter and a respective lateral arm 9 also formed projecting at the front of the anvil 4.
  • the first of these figures shows first of all on the front face of the binding device, two thread guide nozzles 10, 11 slightly offset in a direction perpendicular to the plane of the drawing.
  • These thread guide beaks are provided with respective channels 10a, 11a converging towards one another in the direction of the anvil 4 until they intersect.
  • each thread guide beak 10 or 11 is extended at the rear by a respective support leg 12 or 13 articulated at 14 or 15 on the frame 7, around axes parallel to each other and perpendicular to the main axis.
  • X of the device On each of these legs 12,13 is further articulated, respectively at 16 and 17, a link 18,19, long for the wire guide 10 and short for the wire guide 11.
  • the two links 18,19, directed towards the central axis Y of the binding unit 2, are articulated at 20 and 21 on a rocking lever 22, itself carried in its center by an axis 23 journalling in the frame 7.
  • the lever 22 is provided with a protrusion 24 hinged at its end on a stud 25 blocked between two circular flanges 26,27 formed at the end of the rod 28, a jack 29 carried by the support 2a.
  • This jack 29, centered on the Y axis of the binding unit 2 is common to the four binding devices 6 and therefore, when it is extended, it places and maintains the thread guide beaks 10.11 of each of them in their active position in FIG. 3, by means of the respective mechanisms constituted by the rocking lever 22 and the links 18, 19.
  • twisting head 32 Just behind the two thread guide nozzles 10,11 is a twisting head 32 which will be described with reference to FIGS. 3, 4 and 8.
  • the rear part of this twisting head 32 consists of a body of revolution 33, retained by bearings 34,35 with seals 34a, 35a inside a bore 36 of the frame 7, formed between the legs d 'articulation of the spouts 10,11.
  • an extension 33a of the body 33 carries a clamp 32a consisting of two jaws 37.38 articulated around parallel axes 39.40 perpendicular to the axes of articulation 14.15 of the legs 12,13 of the thread guide beaks. In their rest position shown in Figure 4, these jaws 37,38 are held slightly apart by return springs, not shown, acting between heels 37a, 38a extending them beyond their axes of articulation 39.40 .
  • FIG. 3 it can still be seen that the jaws 37, 38 have a rectangular shape for accommodating themselves, with minimum clearance, in a cutout 52 of complementary shape, formed in the rear face of the wire guide beaks 10, 11 .
  • Figures 3, 4 and 8 also show that on their front face and along their free edge 37b, 38b, the jaws 37,38 are each provided with an open channel 37c or 38c, these two channels tilting while converging on the X axis of the twisting head so, thanks to their mutual offset, visible in FIG. 8, to find themselves respectively in the alignment of the channels 10a, 11a of the thread guide beaks 10.11, when the two jaws 37 , 38 are in their open position shown in FIG. 4.
  • the body 33 of the twisting head 32 has an externally threaded section 41 which is screwed into a fixed nut 42 secured, by a screw 42a, to the wall of the bore 36.
  • the body 33 carries, by means of one or more axial splines 43, a pinion 44 (FIG. 3).
  • the four pinions 44 of the twisting heads 32 of the four binding devices 6 mesh, by means of intermediate pinions 45, with a common central toothed wheel 46 placed in rotation by a hydraulic motor 47.
  • the cavity 48 of a hydraulic cylinder whose rod 49 centered on the axis X ends in a frustoconical head 50 directed towards the interval defined between the heels 37a , 38a of the two jaws 37.38.
  • Each of the binding devices 6 being in the state illustrated in FIG. 4, a thin flexible and continuous binding wire F coming from one of the reels 8 and driven by a motorized pulley 30 mounted on the frame 7 with its counter tension roller 30a, engages in channel 38c of jaw 38 of the twisting head, then in channel 11a in alignment with the thread guide beak 11 for, at the exit of the latter, come to gird a section of the crown by following guide grooves not shown formed in an opening of the anvil 4, along the corresponding arm 9 and along the mandrel 5.
  • the bonding wire then returns to the height of the second wire guide 10, the channel 10a of which it crosses, then the channel in alignment 37c of the second jaw 37, thus crossing on itself.
  • the free end of the wire is gripped by a clamp 31 actuated by a jack not shown, clamp which by cooperating with the reel 8 and its pulley 30, stretches the binding wire F around the crown.
  • the actuator 48 is activated and the frustoconical head 50 of its rod 49 engages between the heels 37a, 38a of the jaws 37, 38 to bring the front clamping spouts closer to the latter, so that they firmly block wire F near its crossover point on itself. Consequently, a shear, not shown, intervenes to cut the wire F on the side of the pulley 30, and thus form a flexible link in which the two interlaced strands F1, F2 (FIG. 6) are immobilized in the twisting head 32.
  • each of the twisting heads 32 is rotated by the motor. hydraulic 47, through the gear formed by the central gear 46 and the pinions 45 and 44. During this rotation, each twisting head is screwed in its nut 42 and, by sliding in the associated pinion 44, is simultaneously driven in a forward translation movement.
  • This double movement of which the twisting head 32 is subjected enables it to produce a twist T as close as possible to the crown C to be linked (see FIG. 7), in practice at a distance of approximately 3 cm from the latter.
  • the flexible link F is thus well adjusted around the crown C without risk of subsequent slipping.
  • the pressure is released in the jack 48, the rod 49 with a frustoconical head is retracted by a return spring 51 inside this jack so that the jaws 37.38 open, the rotation of the head twist 32 is reversed and it is therefore translated backwards.
  • the thread guide beaks 10, 11 are then brought back towards each other in the working position by the jack 29 and a new binding cycle can then begin.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Package Frames And Binding Bands (AREA)
  • Wire Processing (AREA)
  • Ropes Or Cables (AREA)

Abstract

The present invention relates to a binding device which comprises, on a frame (7), means for inserting a flexible tie (F) around an article to be bound comprising guidance units (10, 11) to cause the two ends of the tie to cross over each other, and a head (32) for twisting the latter disposed at the rear of the said guidance units and formed from a clamp (32a) fitted at the end of a rotary body (33). <??>According to the invention, this binding device comprises means of guidance and driving in translation (41, 42, 43, 44) of the twisting head (32) preferably constituted by a nut (42) integral with the frame (7), in which is screwed a threaded section of the body (33) of the twisting head (32), mounted in a sliding manner in a unit for coupling (44) to a means ensuring its driving in rotation, the said guidance units of the flexible tie furthermore being retractable in synchronism with the translation of the twisting head. <??>Application to compacting and binding devices for coils of iron wire, provided with several of these binding devices distributed in a circle. <IMAGE>

Description

La présente invention concerne un dispositif de liage qui comprend, sur un bâti associé à une structure d'appui pour un article à lier, des moyens pour la mise en place d'un lien flexible autour de ce dernier comprenant des organes de guidage pour amener ses deux brins d'extrémité à s'entrecroiser, et une tête de torsadage de ceux-ci disposée à l'arrière desdits organes de guidage et formée d'une pince de serrage montée à l'extrémité d'un corps rotatif.The present invention relates to a binding device which comprises, on a frame associated with a support structure for an article to be tied, means for the establishment of a flexible link around the latter comprising guide members for bringing its two end strands to be crossed, and a twisting head thereof disposed at the rear of said guide members and formed of a clamp clamp mounted at the end of a rotary body.

On trouve de tels dispositifs de liage sur les compacteuses-lieuses de couronnes de fil de fer, dans lesquelles ils sont répartis en cercle sur un support commun, en arrière de l'unité de compactage.Such binding devices are found on the compactors-bends of iron wire crowns, in which they are distributed in a circle on a common support, behind the compacting unit.

Comme on le sait, un inconvénient des compacteuses-lieuses actuelles est que, dans chaque dispositif de liage, la tête de torsadage ne peut, pour des raisons de construction, agir qu'en rotation sur le lien flexible et ce à une grande distance, de l'ordre de 60 mm, de la couronne de fil à lier. Si ceci est sans conséquence sur la qualité du liage des couronnes de fils présentant une forte élasticité qui compense ce jeu de torsadage après le compactage, il en est tout différemment quand le fil est produit par laminage avec un diamètre augmenté réduisant d'autant l'élasticité de la couronne formée. Il s'ensuit en effet que les liens insuffisamment serrés autour de la couronne de fil, glissent souvent le long de celle-ci, par exemple en cours de manutention ou de transport, et que la couronne peut ainsi se défaire.As we know, a disadvantage of current compactors is that, in each binding device, the twisting head can, for construction reasons, act only in rotation on the flexible link and this at a great distance, of the order of 60 mm, from the crown of wire to be tied. If this has no consequence on the quality of the bonding of the crowns of wires having a high elasticity which compensates for this twisting game after compaction, it is quite different when the wire is produced by rolling with an increased diameter correspondingly reducing the elasticity of the formed crown. It follows in fact that the insufficiently tight links around the wire ring, often slide along the latter, for example during handling or transport, and that the ring can thus come undone.

La présente invention s'est fixée pour but de remédier à cet inconvénient et, pour ce faire, elle propose un dispositif de liage du type spécifié en introduction, qui se caractérise en ce qu'il comprend des moyens de guidage et d'entraînement en translation de la tête de torsadage conçus pour agir sur le corps de cette dernière lors de sa rotation, lesdits organes de guidage du lien flexible étant effaçables en synchronisme avec la translation de la tête de torsadage.The present invention has set itself the aim of remedying this drawback and, to do this, it proposes a binding device of the type specified in the introduction, which is characterized in that it comprises means for guiding and driving in translation of the twisting head designed to act on the body of the latter during its rotation, said guide members of the flexible link being erasable in synchronism with the translation of the twisting head.

La tête de torsadage peut ainsi au cours de sa rotation avancer en direction de la couronne de fil à lier, jusqu'à s'en rapprocher à une distance certes encore limitée dans la pratique, mais suffisamment réduite, environ de moitié, pour assurer un liage ferme de bonne qualité en combinaison avec l'élasticité de la couronne de fil, même quand le fil est obtenu par laminage.The twisting head can thus, during its rotation, advance in the direction of the ring of thread to be tied, until it approaches it at a distance which is certainly still limited in practice, but sufficiently reduced, by approximately half, to ensure a good quality firm binding in combination with the elasticity of the wire crown, even when the wire is obtained by rolling.

Selon un mode de réalisation qui semble devoir être retenu à titre préférentiel, en raison de sa simplicité de conception et de sa fiabilité de fonctionnement, lesdits moyens de guidage et d'entraînement en translation comprennent un écrou solidaire du bâti, dans lequel est vissée une partie filetée du corps de la tête de torsadage, lequel est en outre monté coulissant dans un organe d'accouplement à un moyen assurant son entraînement en rotation.According to an embodiment which seems to have to be retained on a preferential basis, because of its simplicity of design and its reliability of operation, said means for guiding and driving in translation comprise a nut integral with the frame, in which is screwed a threaded part of the body of the twisting head, which is also slidably mounted in a coupling member to a means ensuring its drive in rotation.

Avantageusement, ledit organe d'accouplement est un pignon denté retenu autour du corps de la tête de torsadage par une liaison à cannelure axiale et engrenant avec une roue dentée motrice constituant ledit moyen d'entrainement en rotation.Advantageously, said coupling member is a toothed pinion retained around the body of the twisting head by an axial groove connection and meshing with a driving toothed wheel constituting said rotational drive means.

Par ailleurs et selon une autre caractéristique de l'invention, la pince de serrage se compose de deux mors articulés sur le corps de la tête de torsadage en se prolongeant chacun, au-delà de leur axe d'articulation, par un talon arrière, et est en outre associée à un vérin formé dans le corps avec sa tige dirigée vers les talons des mors et se terminant par une tête de forme générale conique destinée à s'engager entre ces derniers, les talons des mors de la pince de serrage étant en outre rappelés l'un vers l'autre au repos. On dispose ainsi de moyens d'actionnement simples de la pince de serrage qui en outre n'augmentent pas l'encombrement général du dispositif de liage.Furthermore and according to another characteristic of the invention, the collet consists of two jaws articulated on the body of the twisting head, each extending beyond their axis of articulation by a rear heel, and is further associated with a jack formed in the body with its rod directed towards the heels of the jaws and ending in a generally conical head intended to engage between the latter, the heels of the jaws of the collet being further recalled to each other at rest. There are thus simple means for actuating the collet which also do not increase the overall size of the binding device.

De leur côté, lesdits organes de guidage du lien flexible sont de préférence constitués par des becs guide-fil pivotants, s'entrecroisant en position active dans le trajet de translation de la tête de torsadage et déplaçables cycliquement hors de ce dernier par des moyens de basculement.For their part, said flexible link guide members are preferably constituted by pivoting thread guide beaks, which intersect in the active position in the translation path of the twisting head and which can be moved cyclically out of the latter by means of tilting.

La présente invention porte également sur une lieuse d'articles de forme annulaire, notamment sur une compacteuse-lieuse de couronnes de fil de fer, du type comprenant plusieurs sous-ensembles de liage disposés en cercle sur un support commun, et qui se caractérise en ce que les sous-ensembles de liage sont constitués par des dispositifs de liage tels que définis précédemment.The present invention also relates to a binder of articles of annular shape, in particular to a compactor-binder of wire wreaths, of the type comprising several binding sub-assemblies arranged in a circle on a common support, and which is characterized by that the binding subassemblies are constituted by binding devices as defined above.

Dans un mode de réalisation préféré simplifiant considérablement la commande des têtes de torsadage des différents dispositifs de liage, ces dernières sont orientées dans le même sens avec leurs axes sensiblement parallèles à l'axe central de l'article à lier et leurs pignons d'accouplement engrènent avec une roue dentée motrice commune.In a preferred embodiment considerably simplifying the control of the twisting heads of the various tying devices, the latter are oriented in the same direction with their axes substantially parallel to the central axis of the article to be bound and their coupling pinions mesh with a common driving gear.

La présente invention va maintenant être décrite plus en détail, mais sans aucun caractère limitatif, en référence aux dessins annexés dans lesquels :

  • - la figure 1 représente schématiquement, en vue de côté, une compacteuse-lieuse conforme à l'invention ;
  • - la figure 2 est une vue en coupe agrandie schématique selon la ligne II-II de la figure 1 ;
  • - la figure 3 est une vue de côté, en coupe partielle, d'un dispositif de liage selon l'invention incorporé dans la compacteuse-lieuse des figures 1 et 2 ;
  • - la figure 4 est une vue en coupe longitudinale, selon la ligne IV-­IV de la figure 3, de la tête de torsadage de ce dispositif de liage ;
  • - la figure 5 représente schématiquement en vue arrière, le système de commande des différentes têtes de torsadage des dispositifs de liage de la compacteuse-lieuse ;
  • - les figures 6 et 7 sont des schémas illustrant deux phases du fonctionnement du dispositif de liage ; et
  • - la figure 8 est une vue de face agrandie de la tête de torsadage, faite selon la flèche A de la figure 4.
The present invention will now be described in more detail, but without any limiting character, with reference to the accompanying drawings in which:
  • - Figure 1 shows schematically, in side view, a compactor-binder according to the invention;
  • - Figure 2 is an enlarged schematic sectional view along the line II-II of Figure 1;
  • - Figure 3 is a side view, in partial section, of a binding device according to the invention incorporated in the compactor-binder of Figures 1 and 2;
  • - Figure 4 is a longitudinal sectional view, along the line IV-IV of Figure 3, of the twisting head of this binding device;
  • - Figure 5 shows schematically in rear view, the control system of the different twisting heads of the binding devices of the compactor-binder;
  • - Figures 6 and 7 are diagrams illustrating two phases of the operation of the binding device; and
  • FIG. 8 is an enlarged front view of the twisting head, made according to arrow A in FIG. 4.

La compacteuse-lieuse exemplifiée sur la figure 1 est formée d'une unité de compactage proprement dite 1 suivie d'une unité de liage 2. D'une manière connue en soi, l'unité de compactage 1 comprend un chariot 3 qui, après avoir reçu une couronne cylindrique de fil à lier, formée dans un poste de bobinage amont, la déplace et la comprime contre une enclume 4 en la faisant passer autour d'un mandrin axial 5 saillant à l'avant de cette dernière.The compactor-binder exemplified in FIG. 1 is formed by a compacting unit proper 1 followed by a binding unit 2. In a manner known per se, the compacting unit 1 comprises a carriage 3 which, after having received a cylindrical crown of wire to be tied, formed in an upstream winding station, moves it and compresses it against an anvil 4 by passing it around an axial mandrel 5 projecting in front of the latter.

En arrière de l'enclume 4, l'unité de liage 2 présente quatre dispositifs de liage 6 identiques qui, comme le montre la figure 2, sont boulonnés en 6a, par leur bâti respectif 7, sur une face, tournée vers l'enclume 4, d'un support commun 2a sur lequel ils sont répartis en cercle en étant mutuellement décalés de 9°. Les dispositifs de liage 6 sont associés à des dévidoirs de fil de liage respectifs désigués dans leur ensemble par 8. Ils possèdent en outre un axe principal de travail X parallèle à l'axe Y du mandrin 5 et positionné dans le prolongement de l'espace de réception de la couronne à lier, défini entre ce dernier et un bras latéral respectif 9 formé aussi en saillie à l'avant de l'enclume 4.Behind the anvil 4, the binding unit 2 has four identical binding devices 6 which, as shown in FIG. 2, are bolted at 6a, by their respective frames 7, on one side, facing the anvil 4, a common support 2a on which they are distributed in a circle being mutually offset by 9 °. The tying devices 6 are associated with respective tying wire reels desigrated as a whole by 8. They also have a main working axis X parallel to the axis Y of the mandrel 5 and positioned in the extension of the space for receiving the crown to be bound, defined between the latter and a respective lateral arm 9 also formed projecting at the front of the anvil 4.

On va maintenant décrire en référence aux figures 3 et 4 la structure de l'un des dispositifs de liage 6, identique en tous points aux trois autres.We will now describe with reference to Figures 3 and 4 the structure of one of the binding devices 6, identical in all respects to the other three.

La première de ces figures montre tout d'abord sur la face frontale du dispositif de liage, deux becs guide-fil 10,11 légèrement décalés dans une direction perpendiculaire au plan du dessin. Ces becs guide-fil sont pourvus de canaux respectifs 10a,11a convergeant l'un vers l'autre en direction de l'enclume 4 jusqu'à s'entrecroiser. Par ailleurs, chaque bec guide-fil 10 ou 11 se prolonge à l'arrière par une jambe de support respective 12 ou 13 articulée en 14 ou 15 sur le bâti 7, autour d'axes parallèles entre eux et perpendiculaires à l'axe principal X du dispositif. Sur chacune de ces jambes 12,13, est en outre articulée, respectivement en 16 et 17, une biellette 18,19, longue pour le guide-fil 10 et courte pour le guide-fil 11. Les deux biellettes 18,19, dirigées vers l'axe central Y de l'unité de liage 2, s'articulent en 20 et 21 sur un levier basculant 22, lui-même porté en son centre par un axe 23 tourillonnant dans le bâti 7. A l'arrière de cet axe 23, le levier 22 est muni d'une excroissance 24 s'articulant par son extrémité sur un plot 25 bloqué entre deux flasques circulaires 26,27 formés à l'extrémité de la tige 28, d'un vérin 29 porté par le support 2a. Ce vérin 29, centré sur l'axe Y de l'unité de liage 2, est commun aux quatre dispositifs de liage 6 et dès lors, lorsqu'il est en extension, il place et maintient les becs guide-fil 10,11 de chacun d'eux dans leur position active de la figure 3, par l'intermédiaire des mécanismes respectifs constitués par le levier basculant 22 et les biellettes 18,19.The first of these figures shows first of all on the front face of the binding device, two thread guide nozzles 10, 11 slightly offset in a direction perpendicular to the plane of the drawing. These thread guide beaks are provided with respective channels 10a, 11a converging towards one another in the direction of the anvil 4 until they intersect. Furthermore, each thread guide beak 10 or 11 is extended at the rear by a respective support leg 12 or 13 articulated at 14 or 15 on the frame 7, around axes parallel to each other and perpendicular to the main axis. X of the device. On each of these legs 12,13 is further articulated, respectively at 16 and 17, a link 18,19, long for the wire guide 10 and short for the wire guide 11. The two links 18,19, directed towards the central axis Y of the binding unit 2, are articulated at 20 and 21 on a rocking lever 22, itself carried in its center by an axis 23 journalling in the frame 7. At the rear of this axis 23, the lever 22 is provided with a protrusion 24 hinged at its end on a stud 25 blocked between two circular flanges 26,27 formed at the end of the rod 28, a jack 29 carried by the support 2a. This jack 29, centered on the Y axis of the binding unit 2, is common to the four binding devices 6 and therefore, when it is extended, it places and maintains the thread guide beaks 10.11 of each of them in their active position in FIG. 3, by means of the respective mechanisms constituted by the rocking lever 22 and the links 18, 19.

Juste derrière les deux becs guide-fil 10,11, se trouve une tête de torsadage 32 que l'on va décrire en référence aux figures 3, 4 et 8.Just behind the two thread guide nozzles 10,11 is a twisting head 32 which will be described with reference to FIGS. 3, 4 and 8.

La partie arrière de cette tête de torsadage 32 consiste en un corps de révolution 33, retenu par des paliers 34,35 à joints d'étanchéité 34a,35a à l'intérieur d'un alésage 36 du bâti 7, ménagé entre les jambes d'articulation des becs 10,11. Au-delà du palier avant 34, un prolongement 33a du corps 33 porte une pince de serrage 32a constituée de deux mors 37,38 articulés autour d'axes parallèles 39,40 perpendiculaires aux axes d'articulation 14,15 des jambes 12,13 des becs guide-fil. Dans leur position de repos représentée sur la figure 4, ces mors 37,38 sont maintenus légèrement écartés par des ressorts de rappel, non représentés, agissant entre des talons 37a, 38a les prolongeant au-delà de leurs axes d'articulation 39,40.The rear part of this twisting head 32 consists of a body of revolution 33, retained by bearings 34,35 with seals 34a, 35a inside a bore 36 of the frame 7, formed between the legs d 'articulation of the spouts 10,11. Beyond the front bearing 34, an extension 33a of the body 33 carries a clamp 32a consisting of two jaws 37.38 articulated around parallel axes 39.40 perpendicular to the axes of articulation 14.15 of the legs 12,13 of the thread guide beaks. In their rest position shown in Figure 4, these jaws 37,38 are held slightly apart by return springs, not shown, acting between heels 37a, 38a extending them beyond their axes of articulation 39.40 .

Sur la figure 3, on peut encore voir que les mors 37,38 présentent une forme rectangulaire pour venir se loger, avec un jeu minimum, dans une découpe 52 de forme complémentaire, ménagée dans la face arrière des becs guide-fil 10,11. Les figures 3, 4 et 8 montrent également que sur leur face avant et le long de leur bord libre 37b,38b, les mors 37,38 sont chacun pourvus d'un canal ouvert 37c ou 38c, ces deux canaux s'inclinant en convergeant sur l'axe X de la tête de torsadage pour, grâce à leur décrochement mutuel, visible sur la figure 8, se retrouver respectivement dans l'alignement des canaux 10a,11a des becs guide-fil 10,11, lorsque les deux mors 37,38 sont dans leur position ouverte représentée sur la figure 4.In FIG. 3, it can still be seen that the jaws 37, 38 have a rectangular shape for accommodating themselves, with minimum clearance, in a cutout 52 of complementary shape, formed in the rear face of the wire guide beaks 10, 11 . Figures 3, 4 and 8 also show that on their front face and along their free edge 37b, 38b, the jaws 37,38 are each provided with an open channel 37c or 38c, these two channels tilting while converging on the X axis of the twisting head so, thanks to their mutual offset, visible in FIG. 8, to find themselves respectively in the alignment of the channels 10a, 11a of the thread guide beaks 10.11, when the two jaws 37 , 38 are in their open position shown in FIG. 4.

Cette même figure montre par ailleurs que, dans sa partie médiane, le corps 33 de la tête de torsadage 32 présente un tronçon fileté extérieurement 41 qui est vissé dans un écrou fixe 42 solidaire, par une vis 42a, de la paroi de l'alésage 36. A son extrémité arrière, le corps 33 porte, par l'intermédiaire d'une ou plusieurs cannelures axiales 43, un pignon 44 (figure 3). Comme le montre la figure 2 ainsi que la vue schématique de la figure 5, les quatre pignons 44 des têtes de torsadage 32 des quatre dispositifs de liage 6 engrènent, par l'intermédiaire de pignons intermédiaires 45, avec une roue dentée centrale commune 46 mise en rotation par un moteur hydraulique 47.This same figure also shows that, in its middle part, the body 33 of the twisting head 32 has an externally threaded section 41 which is screwed into a fixed nut 42 secured, by a screw 42a, to the wall of the bore 36. At its rear end, the body 33 carries, by means of one or more axial splines 43, a pinion 44 (FIG. 3). As shown in FIG. 2 as well as the schematic view of FIG. 5, the four pinions 44 of the twisting heads 32 of the four binding devices 6 mesh, by means of intermediate pinions 45, with a common central toothed wheel 46 placed in rotation by a hydraulic motor 47.

Dans le corps rotatif 33 de la tête de torsadage, est en outre ménagée la cavité 48 d'un vérin hydraulique dont la tige 49 centrée sur l'axe X se termine par une tête tronconique 50 dirigée vers l'intervalle défini entre les talons 37a,38a des deux mors 37,38.In the rotary body 33 of the twisting head, is further formed the cavity 48 of a hydraulic cylinder whose rod 49 centered on the axis X ends in a frustoconical head 50 directed towards the interval defined between the heels 37a , 38a of the two jaws 37.38.

On va maintenant expliquer le fonctionnement de l'unité de liage 2 munie des dispositifs de liage 6 décrits ci-dessus.We will now explain the operation of the binding unit 2 provided with the binding devices 6 described above.

Chacun des dispositifs de liage 6 étant dans l'état illustré par la figure 4, un mince fil souple et continu de liage F provenant de l'un des dévidoirs 8 et entraîné par une poulie motorisée 30 montée sur le bâti 7 avec son contre-galet de tension 30a, s'engage dans le canal 38c du mors 38 de la tête de torsadage, puis dans le canal 11a en alignement du bec guide-fil 11 pour, à la sortie de celui-ci, venir ceindre une section de la couronne en suivant des rainures de guidage non-représentées formées dans une ouverture de l'enclume 4, le long du bras correspondant 9 et le long du mandrin 5. Le fil de liage revient ensuite à hauteur du second guide-fil 10 dont il traverse le canal 10a puis le canal en alignement 37c du second mors 37 en se croisant ainsi sur lui-même. Au-delà, l'extrémité libre du fil est saisie par une pince 31 actionnée par un vérin non-représenté, pince qui en coopérant avec le dévidoir 8 et sa poulie 30, tend le fil de liage F autour de la couronne. Dans l'instant qui suit, le vérin 48 est activé et la tête tronconique 50 de sa tige 49 s'engage entre les talons 37a,38a des mors 37,38 pour rapprocher les becs de serrage frontaux de ces derniers, afin qu'ils bloquent fermement le fil F au voisinage de son point de croisement sur lui-même. Dès lors, une cisaille, non-représentée, intervient pour sectionner le fil F du côté de la poulie 30, et former ainsi un lien flexible dont les deux brins entrecroisés F₁ ,F₂ (figure 6) sont immobilisés dans la tête de torsadage 32.Each of the binding devices 6 being in the state illustrated in FIG. 4, a thin flexible and continuous binding wire F coming from one of the reels 8 and driven by a motorized pulley 30 mounted on the frame 7 with its counter tension roller 30a, engages in channel 38c of jaw 38 of the twisting head, then in channel 11a in alignment with the thread guide beak 11 for, at the exit of the latter, come to gird a section of the crown by following guide grooves not shown formed in an opening of the anvil 4, along the corresponding arm 9 and along the mandrel 5. The bonding wire then returns to the height of the second wire guide 10, the channel 10a of which it crosses, then the channel in alignment 37c of the second jaw 37, thus crossing on itself. Beyond, the free end of the wire is gripped by a clamp 31 actuated by a jack not shown, clamp which by cooperating with the reel 8 and its pulley 30, stretches the binding wire F around the crown. In the following instant, the actuator 48 is activated and the frustoconical head 50 of its rod 49 engages between the heels 37a, 38a of the jaws 37, 38 to bring the front clamping spouts closer to the latter, so that they firmly block wire F near its crossover point on itself. Consequently, a shear, not shown, intervenes to cut the wire F on the side of the pulley 30, and thus form a flexible link in which the two interlaced strands F₁, F₂ (FIG. 6) are immobilized in the twisting head 32.

Ensuite, après éloignement de la pince de mise en tension 31 et écartement des becs guide-fil 10,11 sous l'effet de la rétraction de la tige 28 du vérin 29, chacune des têtes de torsadage 32 est mise en rotation par le moteur hydraulique 47, au travers de l'engrenage constitué par la roue dentée centrale 46 et les pignons 45 et 44. Au cours de cette rotation, chaque tête de torsadage se visse dans son écrou 42 et, en coulissant dans le pignon 44 associé, est animée simultanément d'un mouvement de translation vers l'avant. Ce double mouvement dont fait l'objet la tête de torsadage 32 lui permet de réaliser une torsade T rapprochée au maximum de la couronne C à lier (voir figure 7), en pratique à une distance d'environ 3 cm de celle-ci. Le lien flexible F est ainsi bien ajusté autour de la couronne C sans risque de glissement ultérieur.Then, after moving away from the tensioning clamp 31 and spacing of the thread guide beaks 10, 11 under the effect of the retraction of the rod 28 of the jack 29, each of the twisting heads 32 is rotated by the motor. hydraulic 47, through the gear formed by the central gear 46 and the pinions 45 and 44. During this rotation, each twisting head is screwed in its nut 42 and, by sliding in the associated pinion 44, is simultaneously driven in a forward translation movement. This double movement of which the twisting head 32 is subjected enables it to produce a twist T as close as possible to the crown C to be linked (see FIG. 7), in practice at a distance of approximately 3 cm from the latter. The flexible link F is thus well adjusted around the crown C without risk of subsequent slipping.

Une fois la torsade T réalisée, la pression est relâchée dans le vérin 48, la tige 49 à tête tronconique est rétractée par un ressort de rappel 51 intérieur à ce vérin pour que les mors 37,38 s'ouvrent, la rotation de la tête de torsadage 32 est inversée et celle-ci est donc translatée vers l'arrière. Les becs guide-fil 10,11 sont ensuite ramenés l'un vers l'autre en position de travail par le vérin 29 et un nouveau cycle de liage peut alors commencer.Once the twist T has been carried out, the pressure is released in the jack 48, the rod 49 with a frustoconical head is retracted by a return spring 51 inside this jack so that the jaws 37.38 open, the rotation of the head twist 32 is reversed and it is therefore translated backwards. The thread guide beaks 10, 11 are then brought back towards each other in the working position by the jack 29 and a new binding cycle can then begin.

Claims (6)

1. Dispositif de liage qui comprend, sur un bâti (7) associé à une structure d'appui (4) pour un article à lier (C), des moyens pour la mise en place d'un lien flexible (F) autour de ce dernier comprenant des organes de guidage (10,11) pour amener ses deux brins d'extrémité (F₁ ,F₂) à s'entrecroiser, et une tête de torsadage (32) de ceux-ci disposée à l'arrière desdits organes de guidage et formée d'une pince de serrage (32a) montée à l'extrémité d'un corps rotatif (33), ce dispositif de liage étant caractérisé en ce qu'il comprend des moyens de guidage et d'entraînement en translation (41,42,43,44) de la tête de torsadage (32) lors de sa rotation, comprenant un écrou (42) solidaire du bâti (7), dans lequel est vissée une partie filetée (41) du corps (33) de la tête de torsadage (32), lequel est en outre monté coulissant dans un organe d'accouplement (44) à un moyen assurant son entraînement en rotation, lesdits organes de guidage du lien flexible étant en outre effaçables en synchronisme avec la translation de la tête de torsadage.1. Tying device which comprises, on a frame (7) associated with a support structure (4) for an article to be tied (C), means for the establishment of a flexible link (F) around the latter comprising guide members (10,11) to cause its two end strands (F₁, F₂) to intersect, and a twisting head (32) thereof disposed at the rear of said members guide and formed of a clamp (32a) mounted at the end of a rotary body (33), this binding device being characterized in that it comprises means for guiding and driving in translation (41 , 42,43,44) of the twisting head (32) during its rotation, comprising a nut (42) integral with the frame (7), into which is screwed a threaded part (41) of the body (33) of the twist head (32), which is also slidably mounted in a coupling member (44) to a means ensuring its drive in rotation, said guide members of the flexible link t also erasable in synchronism with the translation of the twisting head. 2. Dispositif de liage selon la revendication 1, caractérisé en ce que ledit organe d'accouplement est un pignon denté (44) retenu autour du corps (33) de la tête de torsadage (32) par une liaison à cannelure axiale (43) et engrenant avec une roue dentée motrice (46) constituant ledit moyen d'entraînement en rotation.2. Tying device according to claim 1, characterized in that said coupling member is a toothed pinion (44) retained around the body (33) of the twisting head (32) by an axial groove connection (43) and meshing with a drive gear (46) constituting said rotational drive means. 3. Dispositif de liage selon la revendication 1 ou 2, caractérisé en ce que la pince de serrage (32a) se compose de deux mors (37,38) articulés sur le corps (33) de la tête de torsadage (32) en se prolongeant chacun, au-­delà de leur axe d'articulation (39,40), par un talon arrière (37a,38a), et est en outre associée à un vérin (48) formé dans le corps (33) avec sa tige (49) dirigée vers les talons des mors et se terminant par une tête de forme générale conique (50) destinée à s'engager entre ces derniers, les talons des mors de la pince de serrage étant en outre rappelés l'un vers l'autre au repos.3. Tying device according to claim 1 or 2, characterized in that the clamp (32a) consists of two jaws (37,38) articulated on the body (33) of the twisting head (32) in each extending beyond their axis of articulation (39.40), by a rear heel (37a, 38a), and is further associated with a jack (48) formed in the body (33) with its rod ( 49) directed towards the heels of the jaws and ending in a generally conical head (50) intended to engage between the latter, the heels of the jaws of the collet being also biased towards each other at rest. 4. Dispositif de liage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que lesdits organes de guidage du lien flexible sont constitués par des becs guide-fils (10,11) pivotants, s'entrecroisant en position active dans le trajet de translation de la tête de torsadage et déplaçables cycliquement hors de ce dernier par des moyens de basculement (18,19,22,29).4. Tying device according to any one of claims 1 to 3, characterized in that said guide members of the flexible link are constituted by pivoting son guide noses (10,11), intersecting in active position in the translation path of the twisting head and cyclically movable therefrom by tilting means (18,19,22,29). 5. Lieuse d'articles de forme annulaire, notamment compacteuse-­lieuse de couronnes de fil de fer, du type comprenant plusieurs sous-ensembles de liage disposés en cercle sur un support commun (2a), caractérisée en ce que les sous-ensembles de liage sont constitués par des dispositifs (6) selon l'une quelconque des revendications 1 à 4.5. Binder of annular articles, in particular compactor-binder of wire rings, of the type comprising several binding sub-assemblies arranged in a circle on a common support (2a), characterized in that the sub-assemblies of binding are constituted by devices (6) according to any one of claims 1 to 4. 6. Lieuse selon la revendication 5, dont les sous-ensembles de liage sont constitués par des dispositifs selon la revendication 2, caractérisée en ce que les têtes de torsadage (32) des dispositifs de liage (6) sont orientées dans le même sens avec leurs axes (X) sensiblement parallèles à l'axe central (Y) de l'article à lier (C) et leurs pignons d'accouplement (44) engrènent avec une roue dentée motrice commune (46).6. Binder according to claim 5, whose binding subassemblies are constituted by devices according to claim 2, characterized in that the twisting heads (32) of the binding devices (6) are oriented in the same direction with their axes (X) substantially parallel to the central axis (Y) of the article to be linked (C) and their coupling pinions (44) mesh with a common drive gear (46).
EP90402314A 1989-08-21 1990-08-20 Binding device with twisting head and binding machine equipped with such devices, especially for binding coils of metal wire Expired - Lifetime EP0414599B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90402314T ATE100402T1 (en) 1989-08-21 1990-08-20 BINDING DEVICE WITH TWISTING HEAD AND TYING MACHINES EQUIPPED WITH SUCH TYING DEVICES, PREFERABLE FOR TYING BUNDLES OF METAL WIRE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8911062 1989-08-21
FR8911062A FR2650989B1 (en) 1989-08-21 1989-08-21 BINDING DEVICE WITH IMPROVED TWISTING HEAD AND BINDER EQUIPPED WITH SUCH DEVICES, PARTICULARLY FOR BINDING WIRE CROWNS

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EP0414599A1 true EP0414599A1 (en) 1991-02-27
EP0414599B1 EP0414599B1 (en) 1994-01-19

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US (1) US5088394A (en)
EP (1) EP0414599B1 (en)
CN (1) CN1018441B (en)
AT (1) ATE100402T1 (en)
CA (1) CA2023599C (en)
DE (1) DE69006137T2 (en)
ES (1) ES2049441T3 (en)
FR (1) FR2650989B1 (en)
RU (1) RU1813055C (en)

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Also Published As

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CN1050165A (en) 1991-03-27
FR2650989B1 (en) 1991-11-29
CA2023599C (en) 1995-07-11
RU1813055C (en) 1993-04-30
ATE100402T1 (en) 1994-02-15
CA2023599A1 (en) 1991-02-22
DE69006137T2 (en) 1994-07-28
CN1018441B (en) 1992-09-30
FR2650989A1 (en) 1991-02-22
EP0414599B1 (en) 1994-01-19
DE69006137D1 (en) 1994-03-03
US5088394A (en) 1992-02-18
ES2049441T3 (en) 1994-04-16

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