EP0332532A1 - Device for tying rods, bars or the like using a flexible metallic wire - Google Patents

Device for tying rods, bars or the like using a flexible metallic wire Download PDF

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Publication number
EP0332532A1
EP0332532A1 EP89400643A EP89400643A EP0332532A1 EP 0332532 A1 EP0332532 A1 EP 0332532A1 EP 89400643 A EP89400643 A EP 89400643A EP 89400643 A EP89400643 A EP 89400643A EP 0332532 A1 EP0332532 A1 EP 0332532A1
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EP
European Patent Office
Prior art keywords
wire
bars
spout
movable
tying
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
EP89400643A
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German (de)
French (fr)
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EP0332532B1 (en
Inventor
Jean Pfister
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Individual
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Individual
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Publication date
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Priority to AT89400643T priority Critical patent/ATE66426T1/en
Publication of EP0332532A1 publication Critical patent/EP0332532A1/en
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Publication of EP0332532B1 publication Critical patent/EP0332532B1/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
    • B65B13/285—Hand tools
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/122—Machines for joining reinforcing bars
    • E04G21/123—Wire twisting tools

Definitions

  • the present invention relates to a portable device or clamp for ligating bars, rods or the like by means of a flexible metallic wire.
  • Pliers are also known which include a rotating halyard on a pull handle by hand, the end of which engages in the two closed loops of a piece of metal wire, mechanically shaped beforehand, and which are placed in semicircle around the bars to bind.
  • the traction carried out on the handle causes the rotation of the driller and the formation of the twist of metal wire which binds the bars. This method is also very slow and tiring.
  • the object of the present invention is to overcome such a drawback by eliminating the need for prior shaping of the wire on a standard template. sting.
  • the ligature head having no guide or template to conform the looped wire, it can be flat, thus making it possible to perform ligatures in places that are not easily accessible, such as the angles, and in all positions, in a cross or in parallel.
  • the strapping of the ligature is made according to the invention by bypassing the bars to be tied and not by preforming a loop in a template head of fixed dimensions.
  • the movable upper spout consists of two sheet metal plates, parallel, spaced apart by an interval greater than the diameter of the wire used for binding, a roller connecting towards the 'front end of the spout the two plates and serving as a gripping hook and tie wire.
  • This roller maintains the tension of the wire around the bundle to be tied by sliding wedging, when the spout describes a trajectory bypassing said bundle.
  • the torsion head can have an internal bore to receive the lower strand of the wire, parallel to the longitudinal axis of the torsion head and a slot along the generatrix situated in the diametrical plane of the bore to receive the upper side of the wire, with locking pawl preventing the exit of the side during rotation.
  • the guide of the wire towards the hook of the movable spout can be ensured by a central groove made in the fixed lower spout.
  • the clamp comprises two jacks.
  • the first serves to ensure the back and forth translation movement of the movable spout and the end of its rod is articulated on the rear end of the movable upper spout.
  • the second cylinder drives the torsion head in rotation, the cylinder rod pushing on a slider mounted on a spiral screw with several turns secured to the torsion head.
  • the cylinders preferably pneumatic, can be controlled by a sequential control unit.
  • the housing 1 of the clamp may be made of injected plastic material houses the various mechanical parts which will be discussed then far, then forms at the front, on the one hand the fixed lower spout 2 and, on the other hand, the guide of the upper fork-shaped spout 4.
  • the spout 2 and the guide 4 form a groove, at the bottom of which the bars or rods to be tied 12 are placed by wedging them.
  • the upper spout movable in translation 3, guided in the fork of the spout 2, consists of two cut sheet metal plates, parallel and spaced apart by a space greater than the diameter of the ligature wire.
  • the end of the spout has an axis 16 connecting the two plates and carrying a rotary roller.
  • the spout 3 is articulated at 5 at the end of the rod 6 of a jack 9 and a spring 29 biases the spout 3 in the direction of the lower spout 2 and its pressure tends to forcefully apply the spout 3 to the bars to be tied .
  • the lower spout 2 is made up of three sheet metal plates placed side by side, the recessed central plate of which creates a groove 25 for the passage of the tying wire.
  • the jack 7 ensures by means of its rod 6 the comings and goings of the movable spout 3 articulated at 5 to this rod, the axis of the articulation 5 being guided horizontally by a rail integral with the casing 1.
  • the jack 9 ensures both the supply of the device with a ligature wire and the rotation drive of the torsion head 17.
  • the system for supplying the ligature wire comprises a train of three notched rollers 14 driven by gears pushed by a rack (not shown) actuated by the jack 9 and a guide tube 15.
  • rollers exert pressure on the wire which slides on a self-lubricating plastic pad.
  • the rollers are disengaged by means of a ratchet on the gears to prevent the return of the wire back.
  • a torsion head 17 secured to a spiral screw 21 with several turns.
  • a slider 20 fixed on the end of the rod 8 of the jack 9.
  • the torsion head 17 consists of a cylinder comprising a longitudinal bore 27 parallel to the axis intended to pass the lower strand of the ligature wire.
  • a slot 28 On the top of the cylinder, along the generator diametrically opposite to the bore 27, is a slot 28 provided with a locking pawl 30 and intended to receive the upper strand of the ligature wire.
  • a wire cutter 19 is arranged flush with the inside face of the torsion head 17 to cut the two strands of wire. It consists of two jaws 26 working in opposition and leaving between them a recess for the passage of the spiral screw 21 causing the torsion head 17 to rotate.
  • the end of the rod of the jack 9 comprises a cam which separates the two arms of the shears 19 by sliding between the two bosses located inside the arms. This spacing cuts the two strands of wire.
  • the two cylinders are preferably actuated by a bottle of compressed air at approximately 2 bars and their action is coordinated by a sequential time delay unit 10 ensuring the control of alternating and consecutive movements.
  • the upper spout 3 In the initial position when the work cycle stops, the upper spout 3 is in the position shown in Figure 1, the bars 12 are placed at the bottom of the groove formed by 2 and 4, the clamp is supplied with ligature wire in reel 13 and the wire is engaged in the wire push rollers 14 and in the wire guide tube 15 as far as the shears 19.
  • the actuator 9 is actuated forwards, which causes the thrust of the wire which leaves the tube 15 as a result of the action of the notched rollers 14, penetrates into the bore 27 of the torsion head 17 and follows the groove 25 to the end of the spout 2.
  • the action of the jack 9 temporarily stops there.
  • the cylinder 7 is actuated towards the rear of the clamp which pulls the upper spout 3 towards the rear.
  • the end of the wire is snapped up by the upper spout 3 passing over the roller 16, the wire slides between the spaced plates of the spout and, the spout being forcefully applied downwards by the spring 5, it applies the tying around tie bars, forming the hoop exactly matching the perimeter of the bundle of tie bars.
  • the jack pulls back the closing cam of the shears 19 and the two strands of the loop are cut. Then, this cam drives the cursor 20 to the end of the stroke, which ensures the rotation of the screw 21.
  • the spiral screw turning, the rotation head 17 performs several turns which form the twist of the ligature 18, the two strands being held back. The ends of the two strands slide out of the head 17 and the ligature is finished, the linked bars are released.
  • the cylinder 7 is actuated in the opposite direction, for example by means of a return spring, the rotation in the opposite direction of the head 17 is not a problem, since the strands are no longer retained by it.
  • the upper spout 3 is thus brought back to its initial position, which makes it possible to place in the groove of the fixed spout 2 bars to be tied, for the following ligature.
  • the device according to the invention is light and therefore portable. It allows you to tie wherever you want, only the size of the pliers' beaks limits its use. It also allows fixed-station work.
  • the materials used to manufacture the clamp are sheet metal elements and tubes, bent or welded together.
  • the wear elements can be made of treated steel.
  • the pneumatic components of the motor control are those available on the market, such as the double-acting cylinder and the timing unit.

Abstract

The instant tying of longitudinal parts by means of portable pliers. The device comprises an upper nose piece 3 which can move in translation and a groove for holding the bars to be tied formed by a fixed lower nose piece 2 and a guide 4 for the upper nose piece in the form of a fork. The mobile nose piece 3 is stressed by a spring 29 in the direction of the lower nose piece 2 and its end is provided with a gripping hook 16, such a roller connecting two spaced sheets, such that, the free end of the tying wire passing through the opening of the hook of the mobile nose piece, the wire is shaped into a loop around the bars to be tied 12, following their grouped perimeter exactly. It allows the tying of packets of bars, the packets being of varying volumes, because the binding works without preforming the wire into a loop using a template of fixed dimensions. <IMAGE>

Description

La présente invention se rapporte à un dispositif ou pince portative pour la ligature de barres, tiges ou analogues au moyen d'un fil métallique souple.The present invention relates to a portable device or clamp for ligating bars, rods or the like by means of a flexible metallic wire.

La fonction de ces dispositifs est la ligature instantanée des pièces longi­tudinales, telles que les barres, tiges ou ronds pour armature de béton armé, des grillages métalliques sur fils tendeurs, des câbles électriques en faisceaux groupés ou des branches de végétaux sur fils tuteurs. De façon générale, de telles pinces trouvent l'application dans les do­maines de travaux publics, de transport et manutention, de clôtures et d'agriculture ou de jardinage.The function of these devices is the instantaneous ligation of longitudinal pieces, such as bars, rods or rounds for reinforcement of reinforced concrete, metallic grids on tensioning wires, electric cables in bundles or branches of plants on staking wires. In general, such pliers find application in the fields of public works, transport and handling, fencing and agriculture or gardening.

Selon les méthodes usuelles, on utilise des pinces universelles ou des tenailles employées à la main pour ligaturer avec un fil métallique des barres que l'on entoure de fil dont les extrémités sont torsadées par rotations répétées des pinces à la force du poignet. Cette méthode est lente, incommode et peu rentable.According to the usual methods, universal pliers or pincers used by hand are used to tie with a metallic wire bars which are surrounded by wire whose ends are twisted by repeated rotations of the pliers by force of the wrist. This method is slow, inconvenient and unprofitable.

On connait aussi des pinces comportant une drille tournante sur poignée de traction à la main, dont l'extrémité s'engage dans les deux boucles fermées d'un morceau de fil métallique, façonnée mécaniquement au pré­alable, et que l'on a disposé en demi-cercle autour des barres à lier. La traction effectuée sur la poignée provoque la rotation de la drille et la formation de la torsade de fil métallique qui lie les barres. Cette méthode est également très lente et fatigante.Pliers are also known which include a rotating halyard on a pull handle by hand, the end of which engages in the two closed loops of a piece of metal wire, mechanically shaped beforehand, and which are placed in semicircle around the bars to bind. The traction carried out on the handle causes the rotation of the driller and the formation of the twist of metal wire which binds the bars. This method is also very slow and tiring.

D'autres pinces présentent l'inconvénient déjà signalé, à savoir le fil à lier doit être préalablement conformé en boucle dans une tête de façon­nage appropriée de dimensions standard, qui ne peut s'appliquer que pour un volume donné de barres à ligaturer.Other pliers have the drawback already mentioned, namely the wire to be tied must be previously shaped into a loop in a suitable shaping head of standard dimensions, which can only be applied for a given volume of bars to be tied.

La présente invention a pour objet de pallier un tel inconvénient en éli­minant la nécessité de façonnage préalable du fil sur un gabarit stan­ dard.The object of the present invention is to overcome such a drawback by eliminating the need for prior shaping of the wire on a standard template. sting.

Elle concerne plus particulièrement un dispositif pour la ligature de barres, tiges ou analogues au moyen d'un fil métallique souple, muni d'une tête de torsion et de moyens pour l'entrainer en rotation, de pinces ou cisailles et de moyens d'alimentation en fil et qui est caractérisé en ce qu'il comprend un bec supérieur mobile en translation et une gorge pour le calage des barres à lier formée par un bec inférieur fixe et un guide du bec supérieur en forme de fourche, le bec supérieur étant sollicité au moyen d'un ressort en direction du bec inférieur et son extrémité étant constituée par un crochet de préhension, de sorte que, l'extrémité libre du fil de ligature passant par l'ouverture du crochet du bec mobile, le fil soit conformé en boucle de cerclage autour de barres à lier, lors­que le bec mobile contourne les barres à lier, son extrémité conformée en crochet appliquant le fil contre les barres à lier, en suivant exacte­ment leur périmètre groupé.It relates more particularly to a device for ligating bars, rods or the like by means of a flexible metallic wire, provided with a torsion head and means for driving it in rotation, with pliers or shears and means for wire feed and which is characterized in that it comprises an upper spout movable in translation and a groove for the setting of the tying bars formed by a fixed lower spout and a guide of the upper spout in the form of a fork, the upper spout being biased by means of a spring in the direction of the lower beak and its end being constituted by a gripping hook, so that, the free end of the ligature wire passing through the opening of the hook of the movable beak, the wire is shaped in a loop of strapping around the tying bars, when the movable spout bypasses the tying bars, its hook-shaped end applying the wire against the tying bars, exactly following their grouped perimeter.

Ainsi, la tête de ligature ne comportant aucun guide ou gabarit pour con­former le fil en boucle, elle peut être plate, permettant ainsi d'effec­tuer les ligatures dans les endroits peu accessibles, tels que les angles, et dans toutes les positions, en croix ou en parallèle. Le cerclage de la ligature est fait selon l'invention par contournement des barres à lier et non par le préformage d'une boucle dans une tête gabarit de dimensions fixes.Thus, the ligature head having no guide or template to conform the looped wire, it can be flat, thus making it possible to perform ligatures in places that are not easily accessible, such as the angles, and in all positions, in a cross or in parallel. The strapping of the ligature is made according to the invention by bypassing the bars to be tied and not by preforming a loop in a template head of fixed dimensions.

Par ailleurs, le serrage du fil de la boucle autour des barres à lier est constant, car le crochet du bec mobile tend le fil par coincement glissé. La distance entre les barres et la tête rotative reste toujours la même, d'où une torsade quasi identique pour toutes les ligatures, quel que soit le volume des barres à lier. De cette façon, deux aciers de diamètre de 6 mm ou trois aciers de diamètre de 20 mm peuvent être ligaturés de façon identique, du moment que la longueur du fil délivré pour la ligature est suffisante pour la capacité maximum de la pince à ligaturer.Furthermore, the tightening of the loop wire around the tying bars is constant, because the hook of the movable spout tends the wire by sliding wedging. The distance between the bars and the rotating head always remains the same, resulting in an almost identical twist for all ties, regardless of the volume of the bars to be tied. In this way, two steels with a diameter of 6 mm or three steels with a diameter of 20 mm can be ligated identically, as long as the length of the wire delivered for ligation is sufficient for the maximum capacity of the pliers to ligate.

Selon une forme de réalisation de la pince selon l'invention particulière­ment avantageuse, le bec supérieur mobile est constitué de deux plaques en tôle, parallèles, espacées entre elles d'un intervalle supérieur au diamètre du fil servant à lier, un galet reliant vers l'extrémité avant du bec les deux plaques et servant de crochet de préhension et de tire­fil de ligature.According to one particularly advantageous embodiment of the clamp according to the invention, the movable upper spout consists of two sheet metal plates, parallel, spaced apart by an interval greater than the diameter of the wire used for binding, a roller connecting towards the 'front end of the spout the two plates and serving as a gripping hook and tie wire.

Ce galet assure le maintien de la tension du fil autour du paquet à lier par coincement glissé, lorsque le bec décrit une trajectoire contournant ledit paquet.This roller maintains the tension of the wire around the bundle to be tied by sliding wedging, when the spout describes a trajectory bypassing said bundle.

De façon avantageuse, la tête de torsion peut présenter un perçage in­térieur pour recevoir le brin inférieur du fil, parallèle à l'axe longi­tudinal de la tête de torsion et une fente le long de la génératrice située dans le plan diamétral du perçage pour recevoir le brin supérieur du fil, avec cliquet de verrouillage empêchant la sortie du brin au cours de la rotation.Advantageously, the torsion head can have an internal bore to receive the lower strand of the wire, parallel to the longitudinal axis of the torsion head and a slot along the generatrix situated in the diametrical plane of the bore to receive the upper side of the wire, with locking pawl preventing the exit of the side during rotation.

Le guidage du fil vers le crochet du bec mobile peut être assuré par une rainure médiane ménagée dans le bec inférieur fixe.The guide of the wire towards the hook of the movable spout can be ensured by a central groove made in the fixed lower spout.

Selon une forme de réalisation avantageuse, la pince comprend deux vérins. Le premier sert à assurer le mouvement de translation aller et retour du bec mobile et l'extrémité de sa tige est articulée sur l'extrémité arrière du bec supérieur mobile.According to an advantageous embodiment, the clamp comprises two jacks. The first serves to ensure the back and forth translation movement of the movable spout and the end of its rod is articulated on the rear end of the movable upper spout.

Le deuxième vérin assure l'entrainement en rotation de la tête de torsion, la tige du vérin exerçant une poussée sur un curseur monté sur une vis spi­ralée à plusieurs tours solidaire de la tête de torsion.The second cylinder drives the torsion head in rotation, the cylinder rod pushing on a slider mounted on a spiral screw with several turns secured to the torsion head.

Les vérins, à action pneumatique de préférence, peuvent être commandés par une centrale séquentielle.The cylinders, preferably pneumatic, can be controlled by a sequential control unit.

D'autres particularités de l'invention apparaitront à la lumière de la description d'un mode de réalisation de la pince présenté à titre d'exem­ple et illustré à l'aide de dessins, dont

  • la figure 1 présente une vue en coupe et en élévation de la pince,
  • la figure 2 une vue en perspective de la tête de ligature,
  • la figure 3 une vue en coupe de côté de la tête de ligature, et
  • la figure 4 une vue de dessus de la tête de ligature, le bec mobile étant démonté.
Other features of the invention will become apparent in the light of the description of an embodiment of the clamp presented by way of example and illustrated with the aid of drawings, of which
  • FIG. 1 presents a view in section and in elevation of the clamp,
  • FIG. 2 a perspective view of the ligature head,
  • FIG. 3 is a side sectional view of the ligating head, and
  • Figure 4 a top view of the ligature head, the movable spout being disassembled.

Le carter 1 de la pince pouvant être en matière plastique injectée loge les différentes parties mécaniques dont il sera question puis loin, puis forme à l'avant, d'une part le bec inférieur fixe 2 et, d'autre part, le guide du bec supérieur 4 en forme de fourche.The housing 1 of the clamp may be made of injected plastic material houses the various mechanical parts which will be discussed then far, then forms at the front, on the one hand the fixed lower spout 2 and, on the other hand, the guide of the upper fork-shaped spout 4.

Le bec 2 et le guide 4 forment une gorge, au fond de laquelle on place en les calant les barres ou tiges à lier 12.The spout 2 and the guide 4 form a groove, at the bottom of which the bars or rods to be tied 12 are placed by wedging them.

Le bec supérieur mobile en translation 3, guidé dans la fourche du bec 2, est constitué de deux plaques de tôle découpée, parallèles et espacées entre elles d'un espace supérieur au diamètre du fil de ligature. L'extré­mité du bec présente un axe 16 reliant les deux plaques et portant `un galet rotatif.The upper spout movable in translation 3, guided in the fork of the spout 2, consists of two cut sheet metal plates, parallel and spaced apart by a space greater than the diameter of the ligature wire. The end of the spout has an axis 16 connecting the two plates and carrying a rotary roller.

Le bec 3 est articulé en 5 à l'extrémité de la tige 6 d'un vérin 9 et un ressort 29 sollicite le bec 3 en direction du bec inférieur 2 et sa pression tend à appliquer avec force le bec 3 sur les barres à lier. Le bec inférieur 2 est constitué de trois plaques de tôle accolées dont la plaque centrale découpée en retrait crée une rainure 25 pour le pas­sage du fil de ligature.The spout 3 is articulated at 5 at the end of the rod 6 of a jack 9 and a spring 29 biases the spout 3 in the direction of the lower spout 2 and its pressure tends to forcefully apply the spout 3 to the bars to be tied . The lower spout 2 is made up of three sheet metal plates placed side by side, the recessed central plate of which creates a groove 25 for the passage of the tying wire.

A l'intérieur du carter 1 sont logés deux vérins pneumatiques 7 et 9, ainsi qu'une bobine 13 du fil de ligature en acier recuit.Inside the casing 1 are housed two pneumatic cylinders 7 and 9, as well as a coil 13 of the annealed steel ligature wire.

Le vérin 7 assure au moyen de sa tige 6 le va-et-vient du bec mobile 3 articulé en 5 à cette tige, l'axe de l'articulation 5 étant guidé horizontale­ment par un rail solidaire du carter 1.The jack 7 ensures by means of its rod 6 the comings and goings of the movable spout 3 articulated at 5 to this rod, the axis of the articulation 5 being guided horizontally by a rail integral with the casing 1.

Le vérin 9 assure à la fois l'alimentation du dispositif en fil de liga­ture et l'entrainement en rotation de la tête de torsion 17.The jack 9 ensures both the supply of the device with a ligature wire and the rotation drive of the torsion head 17.

Le système d'approvisionnement du fil de ligature comprend un train de trois galets 14 crantés mûs par des engrenages poussés par une crémail­lère non représentée actionnée par le vérin 9 et un tube de guidage 15.The system for supplying the ligature wire comprises a train of three notched rollers 14 driven by gears pushed by a rack (not shown) actuated by the jack 9 and a guide tube 15.

Les galets exercent une pression sur le fil qui glisse sur un patin en matière plastique autolubrifiante.The rollers exert pressure on the wire which slides on a self-lubricating plastic pad.

Lors du mouvent de retour du vérin, les galets sont débrayés au moyen d'un cliquet sur les engrenages pour éviter le retour du fil en arrière. Au dessus du bec inférieur 2 est fixée au moyen de paliers appropriés non représentés une tête de torsion 17 solidaire d'une vis spiralée 21 à plusieurs tours. Sur ladite vis 21 est monté un curseur 20 fixé sur l'extrémité de la tige 8 du vérin 9. Ainsi, lors du déplacement de la tige, la tête de torsion 17 accomplit plusieurs tours de rotation autour de son axe.During the return movement of the jack, the rollers are disengaged by means of a ratchet on the gears to prevent the return of the wire back. Above the lower spout 2 is fixed by means of suitable bearings not shown a torsion head 17 secured to a spiral screw 21 with several turns. On said screw 21 is mounted a slider 20 fixed on the end of the rod 8 of the jack 9. Thus, during the displacement of the rod, the torsion head 17 performs several rotational turns around its axis.

La tête de torsion 17 est constituée d'un cylindre comportant un perçage 27 longitudinal parallèle à l'axe destiné à faire passer le brin infé­rieur du fil de ligature. Sur le dessus du cylindre, le long de la géné­ratrice diamétralement opposée au perçage 27, se trouve une fente 28 munie d'un cliquet de verrouillage 30 et destinée à recevoir le brin supérieur du fil de ligature.The torsion head 17 consists of a cylinder comprising a longitudinal bore 27 parallel to the axis intended to pass the lower strand of the ligature wire. On the top of the cylinder, along the generator diametrically opposite to the bore 27, is a slot 28 provided with a locking pawl 30 and intended to receive the upper strand of the ligature wire.

Une cisaille coupe-fil 19 est disposée au ras de face intérieure de la tête de torsion 17 pour couper les deux brins de fil. Elle est constituée de deux mâchoires 26 travaillant en opposition et laissant entre elles un évidement pour le passage de la vis spiralée 21 entrainant en rotation la tête de torsion 17.A wire cutter 19 is arranged flush with the inside face of the torsion head 17 to cut the two strands of wire. It consists of two jaws 26 working in opposition and leaving between them a recess for the passage of the spiral screw 21 causing the torsion head 17 to rotate.

L'extrémité de la tige du vérin 9 comporte une came qui écarte les deux bras de la cisaille 19 en glissant entre les deux bossages situés à l'in­térieur des bras. Cet écartement provoque la coupe des deux brins de fil. Les deux vérins sont actionnés de préférence par une bouteille d'air comprimé à environ 2 bars et leur action est coordonnée par une centrale séquentielle de temporisation 10 assurant la commande de mouvements al­ternés et consécutifs.The end of the rod of the jack 9 comprises a cam which separates the two arms of the shears 19 by sliding between the two bosses located inside the arms. This spacing cuts the two strands of wire. The two cylinders are preferably actuated by a bottle of compressed air at approximately 2 bars and their action is coordinated by a sequential time delay unit 10 ensuring the control of alternating and consecutive movements.

Le fonctionnement de la pince est le suivant.The operation of the clamp is as follows.

En position initiale à l'arrêt du cycle de travail, le bec supérieur 3 est en position représentée à la figure 1, les barres 12 sont placées au fond de la gorge formée par 2 et 4, la pince est approvisionnée de fil de ligature en bobine 13 et le fil est engagé dans les galets pousse-­fil 14 et dans le tube de guidage du fil 15 jusqu'au ras de la cisaille 19. On actionne le vérin 9 vers l'avant, ce qui provoque la poussée du fil qui sort du tube 15 par suite d'action des galets crantés 14, pénètre dans le perçage 27 de la tête de torsion 17 et suit la rainure 25 jusqu'à l'extrémité du bec 2. L'action du vérin 9 s'arrête provisoirement là. On fait actionner le vérin 7 vers l'arrière de la pince qui tire le bec supérieur 3 vers l'arrière. En reculant, l'extrémité du fil est happée par le bec supérieur 3 passant sur le galet 16, le fil glisse entre les plaques espacées du bec et, le bec étant appliqué avec force vers bas par le ressort 5, il applique le fil de ligature autour de barres à lier, formant le cerclage épousant exactement le périmètre du paquet de barres à lier.In the initial position when the work cycle stops, the upper spout 3 is in the position shown in Figure 1, the bars 12 are placed at the bottom of the groove formed by 2 and 4, the clamp is supplied with ligature wire in reel 13 and the wire is engaged in the wire push rollers 14 and in the wire guide tube 15 as far as the shears 19. The actuator 9 is actuated forwards, which causes the thrust of the wire which leaves the tube 15 as a result of the action of the notched rollers 14, penetrates into the bore 27 of the torsion head 17 and follows the groove 25 to the end of the spout 2. The action of the jack 9 temporarily stops there. The cylinder 7 is actuated towards the rear of the clamp which pulls the upper spout 3 towards the rear. Backing up, the end of the wire is snapped up by the upper spout 3 passing over the roller 16, the wire slides between the spaced plates of the spout and, the spout being forcefully applied downwards by the spring 5, it applies the tying around tie bars, forming the hoop exactly matching the perimeter of the bundle of tie bars.

Lors de sa révolution autour de barres à lier, le brin supérieur de la boucle ainsi formée pénètre dans la fente supérieure 28 de la tête de torsion 17 et y reste retenu par le cliquet 30, tandis que l'extrémité du bec 3 maintient le fil engagé dans la tête de torsion 17.During its revolution around tying bars, the upper strand of the loop thus formed penetrates into the upper slot 28 of the torsion head 17 and remains there retained by the pawl 30, while the end of the beak 3 holds the wire engaged in the torsion head 17.

On arrête l'action du vérin 7 et on actionne le vérin 9 dans le sens opposé à son premier mouvement.The action of the jack 7 is stopped and the jack 9 is actuated in the opposite direction to its first movement.

En début de course, le vérin tire en arrière la came de fermeture de la cisaille 19 et les deux brins de la boucle sont coupés. Ensuite, cette came entraine le curseur 20 jusqu'au bout de course, ce qui assure la rotation de la vis 21. La vis spiralée tournant, la tête de rotation 17 exécute plusieurs tours qui forment la torsade de la ligature 18, les deux brins étant freinés. Les extrémités des deux brins glissent hors de la tête 17 et la ligature est terminée, les barres liées sont dégagées. On fait actionner le vérin 7 en sens opposé, par exemple au moyen d'un ressort de rappel, la rotation en sens opposée de la tête 17 n'est pas gênante, car les brins ne sont plus retenus par elle.At the start of the stroke, the jack pulls back the closing cam of the shears 19 and the two strands of the loop are cut. Then, this cam drives the cursor 20 to the end of the stroke, which ensures the rotation of the screw 21. The spiral screw turning, the rotation head 17 performs several turns which form the twist of the ligature 18, the two strands being held back. The ends of the two strands slide out of the head 17 and the ligature is finished, the linked bars are released. The cylinder 7 is actuated in the opposite direction, for example by means of a return spring, the rotation in the opposite direction of the head 17 is not a problem, since the strands are no longer retained by it.

Le bec supérieur 3 est ainsi ramené à sa position initiale, ce qui permet de placer dans la gorge du bec fixe 2 des barres à lier, pour la ligature suivante.The upper spout 3 is thus brought back to its initial position, which makes it possible to place in the groove of the fixed spout 2 bars to be tied, for the following ligature.

Le dispositif selon l'invention est léger et par conséquent portable. Il permet de ligaturer partout où on le désire, seule la dimension des becs de la pince limite son emploi. Il permet également le travail à poste fixe.The device according to the invention is light and therefore portable. It allows you to tie wherever you want, only the size of the pliers' beaks limits its use. It also allows fixed-station work.

Les matéraux utilisés pour la fabrication de la pince sont des éléments de tôlerie et des tubes, pliés ou soudés entre eux. Les éléments d'usure peuvent être en acier traité. Les composants pneumatiques de l'asservisse­ment moteur sont ceux disponibles sur le marché, tels le vérin à double effet et la centrale de temporisation.The materials used to manufacture the clamp are sheet metal elements and tubes, bent or welded together. The wear elements can be made of treated steel. The pneumatic components of the motor control are those available on the market, such as the double-acting cylinder and the timing unit.

L'invention n'est pas limitée au mode particulier décrit, elle est sus­ceptible de nombreuses variantes à la portée de l'homme de l'art, sans sortir du cadre de l'invention, notamment en ce qui concerne des formes variées que peut prendre le crochet de préhension 16.The invention is not limited to the particular mode described, it is capable of numerous variants within the reach of those skilled in the art, without departing from the scope of the invention, in particular with regard to various forms which may take the gripping hook 16.

Claims (8)

1. Dispositif pour la ligature de barres, tiges ou analogues au moyen d'un fil métallique souple, muni d'une tête de torsion et de moyens pour l'entrainer en rotation, de pinces ou cisailles et de moyens d'alimentation du dispositif en fil, caractérisé en ce qu'il comprend un bec supérieur (3) mobile en translation et une gorge pour le calage des barres à lier formée par un bec inférieur fixe (2) et un guide (4) du bec supérieur en forme de fourche, le bec supérieur mobile (3) étant sollicité au moyen d'un ressort (29) en direction du bec infé­rieur (2) et son extrémité étant constituée par un crochet de préhen­sion (16), de sorte que, l'extrémité libre du fil de ligature passant dans l'ouverture du crochet du bec mobile, le fil soit conformé en boucle de cerclage autour de barres à lier (12), lorsque le bec mobile contourne les barres à lier, son extrémité conformée en crochet appliquant le fil contre les barres à lier, en suivant exactement leur périmètre groupé.1. Device for the ligation of bars, rods or the like by means of a flexible metal wire, provided with a torsion head and means for driving it in rotation, with pliers or shears and means for feeding the device in wire, characterized in that it comprises an upper spout (3) movable in translation and a groove for the setting of the tying bars formed by a fixed lower spout (2) and a guide (4) of the upper spout in the form of fork, the movable upper spout (3) being biased by means of a spring (29) in the direction of the lower spout (2) and its end being constituted by a gripping hook (16), so that the free end of the ligature wire passing through the opening of the hook of the movable beak, the wire is shaped in a hoop loop around the tying bars (12), when the movable beak bypasses the tying bars, its hook-shaped end applying the thread against the tying bars, following exactly their grouped perimeter. 2. Dispositif selon la revendication 1, caractérisé en ce que le bec supérieur mobile (3) est constitué de deux plaques en tôle parallèles espacées entre elles d'un intervalle supérieur au diamètre du fil à lier, un galet (16) reliant vers l'extrémité avant du bec les deux plaques et servant de crochet de préhension et de tire-fil de la liga­ture.2. Device according to claim 1, characterized in that the movable upper spout (3) consists of two parallel sheet metal plates spaced apart by an interval greater than the diameter of the wire to be linked, a roller (16) connecting towards the 'front end of the beak the two plates and serving as a gripping hook and wire puller of the ligature. 3. Dispositif selon la revendication 1, caractérisé en ce que la tête de torsion (17) présente un perçage intérieur (27) de réception du brin inférieur du fil, parallèle à son axe longitudinal et une fente (28) de réception du brin supérieur du fil le long de la génératrice si­tuée dans le plan diamétral du perçage avec un cliquet de verrouil­lage du fil (30).3. Device according to claim 1, characterized in that the torsion head (17) has an internal bore (27) for receiving the lower strand of the wire, parallel to its longitudinal axis and a slot (28) for receiving the upper strand of wire along the generator located in the diametrical plane of the hole with a wire locking pawl (30). 4. Dispositif selon la revendication 1, caractérisé en ce que le bec inférieur (2) présente une rainure médiane (25) longitudinale pour le guidage du fil.4. Device according to claim 1, characterized in that the spout lower (2) has a longitudinal central groove (25) for guiding the wire. 5. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les moyens mécaniques sont actionnés par deux vérins pneumatiques (7,9) commandés par une centrale séquentielle de temporisation (10).5. Device according to one of claims 1 to 3, characterized in that the mechanical means are actuated by two pneumatic cylinders (7,9) controlled by a sequential time delay unit (10). 6. Dispositif selon la revendication 1, caractérisé en ce que l'extrémi­té de la tige (6) d'un premier vérin (7) est articulée sur l'extrémi­té arrière du bec supérieur mobile en translation (3) horizontale guidée.6. Device according to claim 1, characterized in that the end of the rod (6) of a first cylinder (7) is articulated on the rear end of the upper spout movable in translation (3) guided horizontal. 7. Dispositif selon la revendication 1, caractérisé en ce que les moyens d'entrainement en rotation de la tête de torsion (17) sont constitués par un deuxième vérin (9) dont la tige exerce une poussée sur un cur­seur (20) monté sur une vis spiralée (21) à plusieurs tours, solidaire de la tête de torsion (17).7. Device according to claim 1, characterized in that the means for rotating the torsion head (17) consist of a second cylinder (9) whose rod exerts a thrust on a slider (20) mounted on a spiral screw (21) with several turns, integral with the torsion head (17). 8. Dispositif selon la revendication 7, caractérisé en ce que la tige du deuxième vérin (9) comporte une came qui d'abord écarte les deux bras de la cisaille (19) provoquant la coupe des deux brins du fil torsadé, puis, le vérin continuant sa course, la came entraine le curseur (20) qui assure la rotation de la tête de torsion (17).8. Device according to claim 7, characterized in that the rod of the second cylinder (9) comprises a cam which first separates the two arms of the shears (19) causing the cutting of the two strands of the twisted wire, then the cylinder continuing its stroke, the cam drives the cursor (20) which ensures the rotation of the torsion head (17).
EP89400643A 1988-03-09 1989-03-08 Device for tying rods, bars or the like using a flexible metallic wire Expired - Lifetime EP0332532B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89400643T ATE66426T1 (en) 1988-03-09 1989-03-08 DEVICE FOR TYING RODS, RODS OR THE LIKE USING A FLEXIBLE METAL WIRE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8803014 1988-03-09
FR8803014A FR2628486B1 (en) 1988-03-09 1988-03-09 DEVICE FOR LIGATING BARS, RODS OR THE LIKE USING A FLEXIBLE METAL WIRE

Publications (2)

Publication Number Publication Date
EP0332532A1 true EP0332532A1 (en) 1989-09-13
EP0332532B1 EP0332532B1 (en) 1991-08-21

Family

ID=9364076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89400643A Expired - Lifetime EP0332532B1 (en) 1988-03-09 1989-03-08 Device for tying rods, bars or the like using a flexible metallic wire

Country Status (5)

Country Link
EP (1) EP0332532B1 (en)
AT (1) ATE66426T1 (en)
DE (1) DE68900212D1 (en)
ES (1) ES2025846T3 (en)
FR (1) FR2628486B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1043332C (en) * 1993-08-16 1999-05-12 便达固股份有限公司 Method and apparatus for binding articles together
WO2001094206A1 (en) * 2000-06-06 2001-12-13 Kim Michael Jensen A method and an apparatus for twisting and tightening a wire
US8607696B2 (en) 2007-11-20 2013-12-17 Jbj Mechatronic Aps Binding apparatus
US9255415B2 (en) 2009-05-27 2016-02-09 Jbj Mechantronic Aps Binding apparatus
CN107849858A (en) * 2015-07-22 2018-03-27 美克司株式会社 Strapper
FR3132042A1 (en) * 2022-01-25 2023-07-28 Innovation Fabrication Commercialisation Infaco Electric portable tying machine for tying plants

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111877767B (en) * 2020-07-15 2021-10-26 理工华汇(潍坊)智能机器人有限公司 Binding hook and binding equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2340175A1 (en) * 1976-02-09 1977-09-02 Dennison Mfg Co INSTALLATION TOOL FOR PRODUCTS REQUIRING TENSIONING IN PARTICULAR FOR CABLE CLAMPS
DE2749342A1 (en) * 1976-11-25 1978-06-01 Itw Fastex Italia Spa TOOL FOR TENSIONING AND CUTTING SELF-LOCKING STRAPS
FR2401742A1 (en) * 1977-09-06 1979-03-30 Amp Inc TOOL FOR LAYING A LIGATURE ON A WIRE HARNESS
FR2571646A1 (en) * 1984-10-12 1986-04-18 Sato Gosei Co Ltd ATTACHING TOOL FOR ATTACHING AND CUTTING A TAP

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2340175A1 (en) * 1976-02-09 1977-09-02 Dennison Mfg Co INSTALLATION TOOL FOR PRODUCTS REQUIRING TENSIONING IN PARTICULAR FOR CABLE CLAMPS
DE2749342A1 (en) * 1976-11-25 1978-06-01 Itw Fastex Italia Spa TOOL FOR TENSIONING AND CUTTING SELF-LOCKING STRAPS
FR2401742A1 (en) * 1977-09-06 1979-03-30 Amp Inc TOOL FOR LAYING A LIGATURE ON A WIRE HARNESS
FR2571646A1 (en) * 1984-10-12 1986-04-18 Sato Gosei Co Ltd ATTACHING TOOL FOR ATTACHING AND CUTTING A TAP

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1043332C (en) * 1993-08-16 1999-05-12 便达固股份有限公司 Method and apparatus for binding articles together
WO2001094206A1 (en) * 2000-06-06 2001-12-13 Kim Michael Jensen A method and an apparatus for twisting and tightening a wire
US8607696B2 (en) 2007-11-20 2013-12-17 Jbj Mechatronic Aps Binding apparatus
US9255415B2 (en) 2009-05-27 2016-02-09 Jbj Mechantronic Aps Binding apparatus
CN107849858A (en) * 2015-07-22 2018-03-27 美克司株式会社 Strapper
US10961729B2 (en) 2015-07-22 2021-03-30 Max Co., Ltd. Binding machine
FR3132042A1 (en) * 2022-01-25 2023-07-28 Innovation Fabrication Commercialisation Infaco Electric portable tying machine for tying plants
WO2023143948A1 (en) * 2022-01-25 2023-08-03 Innovation Fabrication Commercialisation Infaco Portable electric tying machine for binding plants

Also Published As

Publication number Publication date
ATE66426T1 (en) 1991-09-15
FR2628486A1 (en) 1989-09-15
EP0332532B1 (en) 1991-08-21
FR2628486B1 (en) 1990-11-02
DE68900212D1 (en) 1991-09-26
ES2025846T3 (en) 1992-04-01

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