EP0305307B1 - Automatic wiring machine conveyors fitted with pliers for retaining one or several conductors - Google Patents

Automatic wiring machine conveyors fitted with pliers for retaining one or several conductors Download PDF

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Publication number
EP0305307B1
EP0305307B1 EP88430017A EP88430017A EP0305307B1 EP 0305307 B1 EP0305307 B1 EP 0305307B1 EP 88430017 A EP88430017 A EP 88430017A EP 88430017 A EP88430017 A EP 88430017A EP 0305307 B1 EP0305307 B1 EP 0305307B1
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EP
European Patent Office
Prior art keywords
clamp
wires
piston
jaws
clamp according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88430017A
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German (de)
French (fr)
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EP0305307A1 (en
Inventor
Victor Ripert
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L'ENTREPRISE INDUSTRIELLE
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L'ENTREPRISE INDUSTRIELLE
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Publication of EP0305307A1 publication Critical patent/EP0305307A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S269/00—Work holders
    • Y10S269/902—Work holder member with v-shaped notch or groove
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S269/00—Work holders
    • Y10S269/903—Work holder for electrical circuit assemblages or wiring systems

Definitions

  • the present invention relates to clamps fitted to conveyors which are part of automatic wiring machines.
  • the technical sector of the invention is that of the construction of automatic wiring machines.
  • Automatic wiring machines which are equipped with a microprocessor and which automatically cut sections of wires each having a determined length, which strip the ends of these wires and which crimp connecting pieces thereon.
  • These machines comprise one or more circular or linear conveyors which carry means for holding the sections of wires, which are presented at various work stations, distributed along the conveyor.
  • FR-A-2 130 212 discloses a conveyor system comprising clamps formed by two complementary jaws symmetrical with respect to a plane of symmetry, said jaws being pivotally connected to one another and also being urged towards a position closed by springs.
  • the problem to be solved is to produce pliers capable of enclosing one or more threads and of receiving new threads without risking letting go of those they hold.
  • mechanical means must also be made which make it possible to introduce the wires into the clamps and to extract them easily.
  • each clamp comprises two pairs of spouts articulated on a fixed base, which pairs each comprise two spouts which are symmetrical with respect to a plane of symmetry and which are equipped with automatic return means in the closed position and are separated by an intermediate space and, each clamp comprises, in addition, a central piston which is located in said intermediate space, which is symmetrical with respect to said plane of symmetry and which is equipped with means automatic return to the free end of said nozzles.
  • the upper face of said central piston has a V-shaped notch symmetrical with respect to said median plane and flared outwards.
  • each nozzle has a ramp inclined inward downward.
  • the internal edge of each of the spouts comprises, below the lower end of said ramp, a concave notch which delimits with the flared notch on the external face of the piston a passage of variable section, in which one or several wires can be clamped.
  • the invention also relates to devices for introducing wires into a clamp according to the invention, which comprise two pairs of jaws which are actuated by a jack and whose spacing is greater than the width of a clamp.
  • the invention results in new grippers intended to equip conveyors forming part of an automatic wiring machine, which grippers are intended to hold one or more conductive wires to present the ends thereof to distributed work stations. along the conveyors.
  • An advantage of the clamps according to the invention lies in the fact that they can receive one or more conductive wires and that the introduction of a new wire takes place without the clamp loosening the other wires.
  • Another advantage of the clamps according to the invention lies in the fact that, whatever the number of conductive wires which they enclose, they keep them well grouped in the form of bundles which can have a generally circular or flattened cross section. , so that it is possible to crimp a connection piece on several wires at the same time.
  • Another advantage of the pliers according to the invention lies in the fact that they facilitate the mechanical introduction of the wires into the pliers which can be carried out simply by presenting the wire above the pliers and pressing downwards, so that the wire itself causes the mouths of the pliers to open.
  • Another advantage of the pliers according to the invention lies in the fact that they make it possible to obtain the ejection of the wires from the pliers, in a simple manner, by pressing only on the beaks of the pliers to open them, which causes ejection by the piston which is part of each clamp.
  • Figure 1 is a schematic overview of a conveyor part of an automatic wiring machine.
  • Figure 2 is a cross section along II-II of Figure 1.
  • Figure 3 is a section along III-III of Figure 1 showing several successive clamps in different positions.
  • Figure 4 is a section on IV-IV of Figure 3.
  • Figure 5 is an elevational view of a device for introducing the son into the clamps according to the invention.
  • Figure 6 is a section of the device of Figure 5 in the open position.
  • Figures 7 and 8 are partial views of two alternative embodiments of pliers according to the invention.
  • Figure 1 shows a conveyor 1 which is for example an endless belt, toothed, driven by a stepping motor. This conveyor is used to move sections of conductive wires 3 in front of various work stations 41, 42 , 4n, located along the conveyor 1, on one side of it.
  • These workstations may include, for example, a station which strips the ends of the conductive wires, another station which threads on the bared ends a heat-shrinkable insulating sleeve, another station which crimps a connection piece on the bared ends, another station which brings the insulating sleeve back onto the connection piece, etc.
  • the movements of the conveyors and the work stations are controlled synchronously by a central unit 5, equipped with a microprocessor.
  • These machines are capable of automatically preparing batches of determined wires, each section of which has a determined length and is equipped with a determined connection piece.
  • a conveyor according to the invention is equipped with clamps 6, which are moved by the conveyor and which can each grip either a single wire such as for example the clamps 61, 62, 63, 66, 67, or several wires like the clamps 6inces, 65.
  • Figure 2 is a cross section along II-II of Figure 1.
  • FIG. 2 the upper strand 1 of an endless conveyor which is a toothed belt.
  • This conveyor is placed at the bottom of a slide formed by two sections 7a and 7b located on either side of the conveyor and parallel to it.
  • Supports 8 are engaged in the slide.
  • the underside of these supports has ribs 8a which delimit grooves, in which the notches 1a of the toothed belt 1 are engaged, so that the supports 8 are driven without sliding by the movement of the toothed belt and they slide in the slide 7a, 7b which guides them.
  • Each support 8 comprises a hollow pillar 8b which may have a round or polygonal section in which a spring 9 is placed and on which a cap 10 is engaged, which is pushed upwards by the spring 9.
  • FIG. 4 represents an example in which the pillar 8b has a circular section and a pin 11 is engaged in an ovalized hole 12 in the pillar to prevent rotation of the cap while allowing vertical movement.
  • Each cap 10 carries a clamp 15.
  • Each clamp has a fixed base 13, which is fixed to one of the caps 10 by two screws 14 or by any other equivalent fixing means.
  • Each clamp is symmetrical with respect to a plane PP ′ which is perpendicular to the plane of Figure 3 and which is perpendicular to the longitudinal axis of the conveyor.
  • Each clamp has two pairs of spouts forming two elementary clamps.
  • Each elementary clamp is composed of two nozzles 15a, 15b having shapes symmetrical with respect to the plane PP '.
  • Each of the spouts is articulated to the base 13 by an articulation 16a or 16b.
  • Each spout is equipped with a return spring 17a, 17b or any other equivalent return means which exerts on said spout a torque tending to rotate it around its articulation 16a or 16b in the direction of closing the clamp.
  • Each clamp further comprises a central piston 20 which is located in the space 19 intermediate between the two elementary clamps.
  • the piston 20 is symmetrical with respect to the plane PP '. It is mounted on a rod 21 which has a head 21a, which slides in a slot 22 of the base 13 and which abuts against the upper end of said slot.
  • the piston 20 is equipped with a return spring 23 or any other return means which tends to push the piston towards the free end of the jaws of the pliers, that is to say in the high position in the case of Figure 3.
  • the upper face of the piston 20 has a notch 24 in the shape of a V symmetrical relative to the plane PP '.
  • each spout has a ramp 25a, 25b which is inclined downwards towards the inside, that is to say towards the plane of symmetry PP '.
  • the ramps 25a and 25b of the two nozzles of each pair are symmetrical with respect to the plane PP 'and therefore form a Vee diverging towards the outside like the notch 24 on the external face of the piston.
  • each of the spouts further comprises, immediately below the lower or internal end of the inclined ramp 25a, 25b, a notch 26a, 26b, the concavity of which is directed inwards.
  • Each of the spouts has a lug 27a, 27b in relief towards the outside, which is arranged so that by pressing simultaneously on the four lugs, a torque is exerted on the spouts which tends to spread them apart, which has the effect to cause the opening of the two elementary clamps and the ejection of the wires by the central piston 20 which is pushed upwards.
  • Figure 3 shows three different positions of a pliers according to the invention.
  • the leftmost view shows pliers in the fully closed position holding no wires.
  • the free ends 18a and 18b of the two nozzles of each elementary clamp intersect.
  • the piston 20 is blocked by the two nozzles because the return springs of these exert a closing torque greater than the opening torque due to the return spring 23 of the piston.
  • the right view represents a section through a longitudinal plane of a clamp in position where it encloses several wires 28.
  • the two notches 26a, 26b and the Vee notch 24 of the piston delimit a passage having a section of rounded shape, close to a circle and variable as a function of the relative position of the two nozzles and of the piston and the wires 28 are clamped between the two nozzles and the piston which keep them well grouped, which is the desired effect in order to be able to simultaneously crimp the same connection piece on the ends of several wires which must be kept in contact narrow.
  • FIG. 3 represents a clamp opened by a support which is exerted vertically on the raised lugs 27a and 27b by means of a jack or any other equivalent pusher.
  • the spouts 15a and 15b are separated and the piston 20 pushed by the spring 21, ejects the wires from the clamp.
  • Figure 5 is an elevational view of a device mechanical introduction of the son in the clamps according to the invention.
  • This figure shows a clamp 15 mounted on a base 13 and formed by two identical elementary clamps which each have two spouts 15a and 15b.
  • a device comprises a jack 31, the rod of which actuates two identical clamps each formed by two jaws 32a and 32b, the spacing of which is greater than the transverse dimensions of the two pairs of jaws of the clamps 15, so that the two pairs of jaws 32a and 32b are located on either side of the two elementary clamps constituting a clamp 15 when the jack 31 moves them downwards.
  • a wire 29 is clamped between the two pairs of jaws 32a and 32b.
  • FIG. 6 is a vertical section of a wire introduction device according to Figure 5, in the position where the jaws 32a and 32b and the ascent thereof.
  • Figure 6 is a vertical section of a wire introduction device according to Figure 5, in the position where the jaws 32a and 32b are open.
  • the device according to FIGS. 5 and 6 makes it possible to successively introduce several wires of the same diameter or of different diameter, in the same clamp.
  • FIG. 3 represents an exemplary embodiment in which the notch 24 of the piston 20 and the notches 26a, 26b of the spouts have a shape such that they define a substantially circular passage.
  • Figure 7 shows an example in which the notch 24 of the piston 20 has a very large opening angle and the notches 26a and 26b have a large curvature, so that the wires 28 form a flattened beam in the direction perpendicular to the plane of symmetry PP '.
  • a vertical displacement of the pliers is obtained which allows, for example, to lower the wires in a crimping tool or to dip the ends of the wires in a water bath. tinning.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Clamps And Clips (AREA)

Description

La présente invention a pour objet des pinces équipant des convoyeurs qui font partie de machines de câblage automatiques.The present invention relates to clamps fitted to conveyors which are part of automatic wiring machines.

Le secteur technique de l'invention est celui de la cosntruction des machines automatiques de câblage.The technical sector of the invention is that of the construction of automatic wiring machines.

On connaît des machines automatiques de câblage qui sont équipées d'un microprocesseur et qui découpent automatiquement des tronçons de fils ayant chacun une longueur déterminée, qui dénudent les extrémités de ces fils et qui sertissent sur celles-ci des pièces de connexion. Ces machines comportent un ou plusieurs convoyeurs circulaires ou linéaires qui portent des moyens pour tenir les tronçons de fils, lesquels sont présentés à divers postes de travail, répartis le long du convoyeur.Automatic wiring machines are known which are equipped with a microprocessor and which automatically cut sections of wires each having a determined length, which strip the ends of these wires and which crimp connecting pieces thereon. These machines comprise one or more circular or linear conveyors which carry means for holding the sections of wires, which are presented at various work stations, distributed along the conveyor.

FR-A-2 130 212 divulgue un système transporteur comprenant des pinces formées de deux mâchoires complémentaires symétriques par rapport à un plan de symétrie, lesdites mâchoires étant reliées entre elles de façon pivotante et étant aussi sollicitées vers une position fermée par des ressorts.FR-A-2 130 212 discloses a conveyor system comprising clamps formed by two complementary jaws symmetrical with respect to a plane of symmetry, said jaws being pivotally connected to one another and also being urged towards a position closed by springs.

Il est nécessaire pour certaines applications de réaliser des machines de câblage capables de faire des multi-sertissages, c'est-à-dire de sertir une même pièce de connexion sur plusieurs fils conducteurs à la fois, le problème à résoudre est de réaliser des pinces capables d'enserrer un ou plusieurs fils et de recevoir de nouveaux fils sans risquer de lacher ceux qu'elles tiennent. De plus, il faut également réaliser des moyens mécaniques permettant d'introduire les fils dans les pinces et de les extraire facilement.It is necessary for certain applications to produce cabling machines capable of making multi-crimps, that is to say crimping the same connection piece on several conductive wires at the same time, the problem to be solved is to produce pliers capable of enclosing one or more threads and of receiving new threads without risking letting go of those they hold. In addition, mechanical means must also be made which make it possible to introduce the wires into the clamps and to extract them easily.

Ce problème est résolu au moyen de pinces selon la Revendication 1 caractérisées en ce que chaque pince comporte deux paires de becs articulés sur une embase fixe, lesquelles paires comportent chacune deux becs qui sont symétriques par rapport à un plan de symétrie et qui sont équipés de moyens de rappel automatique en position fermée et sont séparées par un espace intermédiaire et, chaque pince comporte, en outre, un piston central qui est situé dans ledit espace intermédiaire, qui est symétrique par rapport audit plan de symétrie et qui est équipé de moyens de rappel automatique vers l'extrémité libre desdits becs.This problem is solved by means of clamps according to Claim 1, characterized in that each clamp comprises two pairs of spouts articulated on a fixed base, which pairs each comprise two spouts which are symmetrical with respect to a plane of symmetry and which are equipped with automatic return means in the closed position and are separated by an intermediate space and, each clamp comprises, in addition, a central piston which is located in said intermediate space, which is symmetrical with respect to said plane of symmetry and which is equipped with means automatic return to the free end of said nozzles.

Avantageusement, la face supérieure dudit piston central comporte une échancrure en forme de Vé symétrique par rapport audit plan médian et évasée vers l'extérieur.Advantageously, the upper face of said central piston has a V-shaped notch symmetrical with respect to said median plane and flared outwards.

L'extrémité libre du bord interne de chacun des becs comporte une rampe inclinée vers l'intérieur en descendant. De plus, le bord interne de chacun des becs comporte, au-dessous de l'extrémité inférieure de ladite rampe, une échancrure concave qui délimite avec l'échancrure évasée de la face externe du piston un passage de section variable, dans lequel un ou plusieurs fils peuvent être enserrés.The free end of the inner edge of each nozzle has a ramp inclined inward downward. In addition, the internal edge of each of the spouts comprises, below the lower end of said ramp, a concave notch which delimits with the flared notch on the external face of the piston a passage of variable section, in which one or several wires can be clamped.

L'invention a également pour objet des dispositifs d'introduction de fils dans une pince selon l'invention, qui comportent deux paires de mâchoires qui sont actionnées par un vérin et dont l'écartement est supérieur à la largeur d'une pince.The invention also relates to devices for introducing wires into a clamp according to the invention, which comprise two pairs of jaws which are actuated by a jack and whose spacing is greater than the width of a clamp.

L'invention a pour résultat de nouvelles pinces destinées à équiper des convoyeurs faisant partie d'une machine automatique de câblage, lesquelles pinces sont destinées à tenir un ou plusieurs fils conducteurs pour présenter les extrémités de ceux-ci à des postes de travail répartis le long des convoyeurs.The invention results in new grippers intended to equip conveyors forming part of an automatic wiring machine, which grippers are intended to hold one or more conductive wires to present the ends thereof to distributed work stations. along the conveyors.

Un avantage des pinces selon l'invention réside dans le fait qu'elles peuvent recevoir un ou plusieurs fils conducteurs et que l'introduction d'un nouveau fil se fait sans que la pince ne relâche les autres fils.An advantage of the clamps according to the invention lies in the fact that they can receive one or more conductive wires and that the introduction of a new wire takes place without the clamp loosening the other wires.

Un autre avantage des pinces selon l'invention réside dans le fait que, quel que soit le nombre de fils conducteurs qu'elles enserrent, elles maintiennent ceux-ci bien groupés sous forme de faisceaux pouvant avoir une section transversale de forme générale circulaire ou aplatie, de sorte qu'il est possible de sertir une pièce de connexion sur plusieurs fils à la fois.Another advantage of the clamps according to the invention lies in the fact that, whatever the number of conductive wires which they enclose, they keep them well grouped in the form of bundles which can have a generally circular or flattened cross section. , so that it is possible to crimp a connection piece on several wires at the same time.

Un autre avantage des pinces selon l'invention réside dans le fait qu'elles facilitent l'introduction mécanique des fils dans les pinces qui peut être réalisée simplement en présentant le fil au-dessus des pinces et en appuyant vers le bas, de sorte que le fil provoque lui-même l'ouverture des becs de la pince.Another advantage of the pliers according to the invention lies in the fact that they facilitate the mechanical introduction of the wires into the pliers which can be carried out simply by presenting the wire above the pliers and pressing downwards, so that the wire itself causes the mouths of the pliers to open.

Un autre avantage des pinces selon l'invention réside dans le fait qu'elles permettent d'obtenir l'éjection des fils hors de la pince, de façon simple, en appuyant seulement sur les becs de la pince pour les ouvrir, ce qui provoque l'éjection par le piston qui fait partie de chaque pince.Another advantage of the pliers according to the invention lies in the fact that they make it possible to obtain the ejection of the wires from the pliers, in a simple manner, by pressing only on the beaks of the pliers to open them, which causes ejection by the piston which is part of each clamp.

La description suivante se réfère aux dessins annexés qui représentent, sans aucun caractère limitatif, un exemple de réalisation de pinces selon l'invention.The following description refers to the appended drawings which represent, without any limiting character, an exemplary embodiment of pliers according to the invention.

La figure 1 est une vue d'ensemble schématique d'un convoyeur faisant partie d'une machine automatique de câblage.Figure 1 is a schematic overview of a conveyor part of an automatic wiring machine.

La figure 2 est une coupe transversale selon II-II de la figure 1.Figure 2 is a cross section along II-II of Figure 1.

La figure 3 est une coupe suivant III-III de la figure 1 représentant plusieurs pinces successives dans des positions différentes.Figure 3 is a section along III-III of Figure 1 showing several successive clamps in different positions.

La figure 4 est une coupe suivant IV-IV de la figure 3.Figure 4 is a section on IV-IV of Figure 3.

La figure 5 est une vue en élévation d'un dispositif d'introduction des fils dans les pinces selon l'invention.Figure 5 is an elevational view of a device for introducing the son into the clamps according to the invention.

La figure 6 est une coupe du dispositif de la figure 5 en position ouverte.Figure 6 is a section of the device of Figure 5 in the open position.

Les figures 7 et 8 sont des vues partielles de deux variantes de réalisation de pinces selon l'invention.Figures 7 and 8 are partial views of two alternative embodiments of pliers according to the invention.

La figure 1 représente un convoyeur 1 qui est par exemple une courroie sans fin, crantée, entraînée par un moteur pas à pas. Ce convoyeur sert à déplacer des tronçons de fils conducteurs 3 devant divers postes de travail 4₁, 4₂.....4n, situés le long du convoyeur 1, sur un côté de celui-ci.Figure 1 shows a conveyor 1 which is for example an endless belt, toothed, driven by a stepping motor. This conveyor is used to move sections of conductive wires 3 in front of various work stations 4₁, 4₂ ..... 4n, located along the conveyor 1, on one side of it.

Ces postes de travail peuvent comporter par exemple un poste qui dénude les extrémités des fils conducteurs, un autre poste qui enfile sur les extrémités dénudées un manchon isolant thermorétractable, un autre poste qui sertit une pièce de connexion sur les extrémités dénudées, un autre poste qui ramène le manchon isolant sur la pièce de connexion etc....These workstations may include, for example, a station which strips the ends of the conductive wires, another station which threads on the bared ends a heat-shrinkable insulating sleeve, another station which crimps a connection piece on the bared ends, another station which brings the insulating sleeve back onto the connection piece, etc.

Les mouvements du convoyeurs et des postes de travail sont commandés en synchronisme par une unité centrale 5, équipée d'un microprocesseur.The movements of the conveyors and the work stations are controlled synchronously by a central unit 5, equipped with a microprocessor.

On connaît déjà des machines automatiques de câblage équipées de convoyeurs linéaires ou d'un plateau tournant qui portent des étaux qui enserrent chacun un fil.Automatic wiring machines are already known which are fitted with linear conveyors or a turntable which carry vices which each enclose a wire.

Ces machines sont capables de préparer automatiquement des lots de fils déterminés dont chaque tronçon a une longueur déterminée et est équipé d'une pièce de connexion déterminée.These machines are capable of automatically preparing batches of determined wires, each section of which has a determined length and is equipped with a determined connection piece.

Toutefois, les machines existantes ne sont pas conçues pour permettre d'effectuer mécaniquement des sertissages multiples, c'est-à-dire pour sertir une même pince de connexion sur plusieurs fils conducteurs.However, existing machines are not designed to allow multiple crimping to be performed mechanically, that is to say to crimp the same connection clamp on several conductive wires.

Un convoyeur selon l'invention est équipé de pinces 6, qui sont déplacées par le convoyeur et qui peuvent enserrer chacune soit un seul fil comme par exemple les pinces 6₁, 6₂, 6₃, 6₆, 6₇, soit plusieurs fils comme les pinces 6₄, 6₅.A conveyor according to the invention is equipped with clamps 6, which are moved by the conveyor and which can each grip either a single wire such as for example the clamps 6₁, 6₂, 6₃, 6₆, 6₇, or several wires like the clamps 6inces, 6₅.

La figure 2 est une coupe transversale selon II-II de la figure 1.Figure 2 is a cross section along II-II of Figure 1.

On voit sur la figure 2 le brin supérieur 1 d'un convoyeur sans fin qui est une courroie crantée. Ce convoyeur est placé dans le fond d'une glissière formée par deux profilés 7a et 7b situés de part et d'autre du convoyeur et parallèles à celui-ci. Des supports 8 sont engagés dans la glissière. La face inférieure de ces supports comporte des nervures 8a qui délimitent des rainures, dans lesquelles sont engagés les crans 1a de la courroie crantée 1, de sorte que les supports 8 sont entraînés sans glissement par le mouvement de la courroie crantée et ils coulissent dans la glissière 7a, 7b qui les guide.We see in Figure 2 the upper strand 1 of an endless conveyor which is a toothed belt. This conveyor is placed at the bottom of a slide formed by two sections 7a and 7b located on either side of the conveyor and parallel to it. Supports 8 are engaged in the slide. The underside of these supports has ribs 8a which delimit grooves, in which the notches 1a of the toothed belt 1 are engaged, so that the supports 8 are driven without sliding by the movement of the toothed belt and they slide in the slide 7a, 7b which guides them.

Chaque support 8 comporte un pilier creux 8b qui peut avoir une section ronde ou polygonale dans lequel est placé un ressort 9 et sur lequel est engagé un chapeau 10, qui est repoussé vers le haut par le ressort 9.Each support 8 comprises a hollow pillar 8b which may have a round or polygonal section in which a spring 9 is placed and on which a cap 10 is engaged, which is pushed upwards by the spring 9.

La figure 4 représente un exemple dans lequel le pilier 8b a une section circulaire et une broche 11 est engagée dans un trou ovalisé 12 du pilier pour empêcher la rotation du chapeau tout en permettant le déplacement vertical.FIG. 4 represents an example in which the pillar 8b has a circular section and a pin 11 is engaged in an ovalized hole 12 in the pillar to prevent rotation of the cap while allowing vertical movement.

Chaque chapeau 10 porte une pince 15. Chaque pince comporte une embase fixe 13, qui est fixée à l'un des chapeaux 10 par deux vis 14 ou par tout autre moyen de fixation équivalent. Chaque pince est symétrique par rapport à un plan PP′ qui est perpendiculaire au plan de la figure 3 et qui est perpendiculaire à l'axe longitudinal du convoyeur.Each cap 10 carries a clamp 15. Each clamp has a fixed base 13, which is fixed to one of the caps 10 by two screws 14 or by any other equivalent fixing means. Each clamp is symmetrical with respect to a plane PP ′ which is perpendicular to the plane of Figure 3 and which is perpendicular to the longitudinal axis of the conveyor.

Chaque pince comporte deux paires de becs formant deux pinces élémentaires. Chaque pince élémentaire est composée de deux becs 15a, 15b ayant des formes symétriques par rapport au plan PP'.Each clamp has two pairs of spouts forming two elementary clamps. Each elementary clamp is composed of two nozzles 15a, 15b having shapes symmetrical with respect to the plane PP '.

Chacun des becs est articulé à l'embase 13 par une articulation 16a ou 16b. Chaque bec est équipé d'un ressort de rappel 17a, 17b ou de tout autre moyen de rappel équivalent qui exerce sur ledit bec un couple tendant à le faire pivoter autour de son articulation 16a ou 16b dans le sens de la fermeture de la pince.Each of the spouts is articulated to the base 13 by an articulation 16a or 16b. Each spout is equipped with a return spring 17a, 17b or any other equivalent return means which exerts on said spout a torque tending to rotate it around its articulation 16a or 16b in the direction of closing the clamp.

On voit sur la figure 2 les deux pinces élémentaires séparées par un espace intermédiaire 19. On voit également sur les figures 2 et 3 que les deux becs 15a, 15b de chaque paire ont la même épaisseur et sont situés dans un même plan longitudinal à l'exception des extrémités externes 18a et 18b qui ont une épaisseur égale à la moitié de l'épaisseur des becs et qui sont décalées latéralement, de sorte qu'elles s'entrecroisent lorsque les deux becs sont en position fermée.We see in Figure 2 the two elementary clamps separated by an intermediate space 19. We also see in Figures 2 and 3 that the two spouts 15a, 15b of each pair have the same thickness and are located in the same longitudinal plane at l except the outer ends 18a and 18b which have a thickness equal to half the thickness of the spouts and which are offset laterally, so that they intersect when the two spouts are in the closed position.

Chaque pince comporte, en outre, un piston central 20 qui est situé dans l'espace 19 intermédiaire entre les deux pinces élémentaires.Each clamp further comprises a central piston 20 which is located in the space 19 intermediate between the two elementary clamps.

Le piston 20 est symétrique par rapport au plan PP'. Il est monté sur une tige 21 qui comporte une tête 21a, qui coulisse dans une lumière 22 de l'embase 13 et qui vient en butée contre l'extrémité supérieure de ladite lumière. Le piston 20 est équipé d'un ressort de rappel 23 ou de tout autre moyen de rappel qui tend à repousser le piston vers l'extrémité libre des becs de la pince, c'est-à-dire en position haute dans le cas de la figure 3.The piston 20 is symmetrical with respect to the plane PP '. It is mounted on a rod 21 which has a head 21a, which slides in a slot 22 of the base 13 and which abuts against the upper end of said slot. The piston 20 is equipped with a return spring 23 or any other return means which tends to push the piston towards the free end of the jaws of the pliers, that is to say in the high position in the case of Figure 3.

La face supérieure du piston 20 comporte une encoche 24 en forme de Vé symétrique par rapport au plan PP'.The upper face of the piston 20 has a notch 24 in the shape of a V symmetrical relative to the plane PP '.

Le bord interne de l'extrémité libre de chaque bec comporte une rampe 25a, 25b qui est inclinée en descendant vers l'intérieur, c'est-à-dire vers le plan de symétrie PP'. Les rampes 25a et 25b des deux becs de chaque paire sont symétriques par rapport au plan PP' et forment donc un Vé divergeant vers l'extérieur comme l'échancrure 24 de la face externe du piston.The internal edge of the free end of each spout has a ramp 25a, 25b which is inclined downwards towards the inside, that is to say towards the plane of symmetry PP '. The ramps 25a and 25b of the two nozzles of each pair are symmetrical with respect to the plane PP 'and therefore form a Vee diverging towards the outside like the notch 24 on the external face of the piston.

Le bord interne de chacun des becs comporte, en outre, immédiatement au-dessous de l'extrémité inférieure ou interne de la rampe inclinée 25a, 25b une échancrure 26a, 26b dont la concavité est dirigée vers l'intérieur.The internal edge of each of the spouts further comprises, immediately below the lower or internal end of the inclined ramp 25a, 25b, a notch 26a, 26b, the concavity of which is directed inwards.

Chacun des becs comporte un ergot 27a, 27b en relief vers l'extérieur, qui est disposé de telle sorte qu'en appuyant simultanément sur les quatre ergots, on exerce sur les becs un couple qui tend à les écarter, ce qui a pour effet de provoquer l'ouverture des deux pinces élémentaires et l'éjection des fils par le piston central 20 qui est repoussé vers le haut.Each of the spouts has a lug 27a, 27b in relief towards the outside, which is arranged so that by pressing simultaneously on the four lugs, a torque is exerted on the spouts which tends to spread them apart, which has the effect to cause the opening of the two elementary clamps and the ejection of the wires by the central piston 20 which is pushed upwards.

La figure 3 représente trois positions différentes d'une pince selon l'invention.Figure 3 shows three different positions of a pliers according to the invention.

La vue la plus à gauche représente une pince en position complètement fermée ne tenant aucun fil. Les extrémités libres 18a et 18b des deux becs de chaque pince élémentaire s'entrecroisent. Le piston 20 est bloqué par les deux becs car les ressorts de rappel de ceux-ci exercent un couple de fermeture supérieur au couple d'ouverture dû au ressort 23 de rappel du piston.The leftmost view shows pliers in the fully closed position holding no wires. The free ends 18a and 18b of the two nozzles of each elementary clamp intersect. The piston 20 is blocked by the two nozzles because the return springs of these exert a closing torque greater than the opening torque due to the return spring 23 of the piston.

La vue de droite représente une coupe par un plan longitudinal d'une pince en position où elle enserre plusieurs fils 28.The right view represents a section through a longitudinal plane of a clamp in position where it encloses several wires 28.

On voit clairement sur cette vue que les deux encoches 26a, 26b et l'encoche en Vé 24 du piston, délimitent un passage ayant une section de forme arrondie, voisine d'un cercle et variable en fonction de la position relative des deux becs et du piston et les fils 28 se trouvent enserrés entre les deux becs et le piston qui les maintiennent bien groupés, ce qui est l'effet recherché pour pouvoir sertir simultanément une même pièce de connexion sur les extrémités de plusieurs fils qui doivent être maintenus en contact étroit.It is clearly seen in this view that the two notches 26a, 26b and the Vee notch 24 of the piston, delimit a passage having a section of rounded shape, close to a circle and variable as a function of the relative position of the two nozzles and of the piston and the wires 28 are clamped between the two nozzles and the piston which keep them well grouped, which is the desired effect in order to be able to simultaneously crimp the same connection piece on the ends of several wires which must be kept in contact narrow.

On voit également sur cette figure que si l'on présente un nouveau fil 29 entre les becs de la pince en exerçant sur ce fil une force dirigée vers le bas, ce nouveau fil s'appuie sur les rampes 25a et 25b et exerce sur les becs un couple qui tend à les écarter jusqu'à ce que le nouveau fil passe entre les pointes des deux becs et vienne rejoindre le faisceau de fils 28 déjà tenus par la pince. Pendant l'introduction du nouveau fil, le faisceau de fils 28 déjà en place dans la pince, reste maintenu par l'action combinée des deux becs et du piston 20 et aucun des fils ne peut sortir de la pince.We also see in this figure that if we present a new wire 29 between the beaks of the pliers by exerting on this wire a force directed downwards, this new wire is supported on the ramps 25a and 25b and exerts on the beaks a couple which tends to spread them apart until the new wire passes between the tips of the two beaks and joins the bundle of wires 28 already held by the clamp. During the introduction of the new wire, the bundle of wires 28 already in place in the clamp remains maintained by the combined action of the two nozzles and of the piston 20 and none of the wires can come out of the clamp.

La vue intermédiaire de la figure 3 représente une pince ouverte par un appui qui est exercé verticalement sur les ergots en relief 27a et 27b au moyen d'un vérin ou de tout autre poussoir équivalent. Les becs 15a et 15b sont écartés et le piston 20 poussé par le ressort 21, éjecte les fils hors de la pince.The intermediate view in FIG. 3 represents a clamp opened by a support which is exerted vertically on the raised lugs 27a and 27b by means of a jack or any other equivalent pusher. The spouts 15a and 15b are separated and the piston 20 pushed by the spring 21, ejects the wires from the clamp.

On voit sur la vue de droite que les deux pinces élémentaires sont reliées entre elles par deux entretoises formées de deux plaques pliées 30a et 30b, sur lesquelles s'exercent les poussées des ressorts de rappel 17a et 17b.We see in the right view that the two elementary clamps are connected together by two spacers formed by two folded plates 30a and 30b, on which the thrusts of the return springs 17a and 17b are exerted.

La figure 5 est une vue en élévation d'un dispositif d'introduction mécanique des fils dans les pinces selon l'invention.Figure 5 is an elevational view of a device mechanical introduction of the son in the clamps according to the invention.

On retrouve sur cette figure un pince 15 montée sur une embase 13 et formée de deux pinces élémentaires identiques qui comportent chacune deux becs 15a et 15b.This figure shows a clamp 15 mounted on a base 13 and formed by two identical elementary clamps which each have two spouts 15a and 15b.

Un dispositif selon l'invention comporte un vérin 31 dont la tige actionne deux pinces identiques formées chacune de deux mâchoires 32a et 32b dont l'écartement est supérieur à l'encombrement transversal des deux paires de becs des pinces 15, de sorte que les deux paires de mâchoires 32a et 32b se situent de part et d'autre des deux pinces élémentaires constituant une pince 15 lorsque le vérin 31 les déplace vers le bas.A device according to the invention comprises a jack 31, the rod of which actuates two identical clamps each formed by two jaws 32a and 32b, the spacing of which is greater than the transverse dimensions of the two pairs of jaws of the clamps 15, so that the two pairs of jaws 32a and 32b are located on either side of the two elementary clamps constituting a clamp 15 when the jack 31 moves them downwards.

Un fil 29 est serré entre les deux paires de mâchoires 32a et 32b.A wire 29 is clamped between the two pairs of jaws 32a and 32b.

Le déplacement vers le bas du vérin 31 appuie le fil 29 contre les deux rampes inclinées 25a et 25b, ce qui provoque l'écartement des becs 15a et 15b et l'introduction du fil 29 dans la pince 15. Le vérin 31 actionne ensuite l'ouverture des mâchoires 32a et 32b et la remontée de celles-ci.
   la figure 6 est une coupe verticale d'un dispositif d'introduction des fils selon la figure 5, dans la position où les mâchoires 32a et 32b et la remontée de celles-ci.The downward movement of the jack 31 presses the wire 29 against the two inclined ramps 25a and 25b, which causes the spouts 15a and 15b to be separated and the wire 29 to be inserted into the clamp 15. The jack 31 then actuates the opening of the jaws 32a and 32b and raising them.
Figure 6 is a vertical section of a wire introduction device according to Figure 5, in the position where the jaws 32a and 32b and the ascent thereof.

La figure 6 est une coupe verticale d'un dispositif d'introduction des fils selon la figure 5, dans la position où les mâchoires 32a et 32b sont ouvertes.Figure 6 is a vertical section of a wire introduction device according to Figure 5, in the position where the jaws 32a and 32b are open.

Le dispositif selon les figures 5 et 6 permet d'introduire successivement plusieurs fils de même diamètre ou de diamètre différent, dans une même pince.The device according to FIGS. 5 and 6 makes it possible to successively introduce several wires of the same diameter or of different diameter, in the same clamp.

La figure 3 représente un exemple de réalisation dans lequel l'échancrure 24 du piston 20 et les échancrures 26a, 26b des becs ont une forme telle qu'elles délimitent un passage sensiblement circulaire.FIG. 3 represents an exemplary embodiment in which the notch 24 of the piston 20 and the notches 26a, 26b of the spouts have a shape such that they define a substantially circular passage.

On peut réaliser d'autres formes.We can realize other forms.

La figure 7 représente un exemple dans lequel l'échancrure 24 du piston 20 a un angle d'ouverture très grand et les échancrures 26a et 26b ont une forte courbure, de sorte que les fils 28 forment un faisceau aplati dans le sens perpendiculaire au plan de symétrie PP'.Figure 7 shows an example in which the notch 24 of the piston 20 has a very large opening angle and the notches 26a and 26b have a large curvature, so that the wires 28 form a flattened beam in the direction perpendicular to the plane of symmetry PP '.

On peut également associer un piston 20 ayant une échancrure 24 très fermée avec des échancrures 26a et 26b peu concaves pour obtenir un regroupement des fils 28 en forme de faisceau aplati situé dans le plan de symétrie PP' comme le représente la figure 7.
Ou a vu que le support 8, 10 qui relie chaque pince au convoyeur 1, comporte un chapeau 10 qui coiffe un pilier 8b et qui est repoussé vers le haut par un ressort 9.It is also possible to associate a piston 20 having a very closed notch 24 with not very concave notches 26a and 26b in order to obtain a grouping of the wires 28 in the form of a flattened beam situated in the plane of symmetry PP 'as shown in FIG. 7.
Or saw that the support 8, 10 which connects each clamp to the conveyor 1, comprises a cap 10 which covers a pillar 8b and which is pushed upwards by a spring 9.

En appuyant verticalement sur le sommet du chapeau 10 au moyen d'un poussoir, on obtient un déplacement vertical de la pince qui permet par exemple de faire descendre les fils dans un outil de sertissage ou de tremper les extrémités des fils dans un bain d'étamage.By pressing vertically on the top of the cap 10 by means of a pusher, a vertical displacement of the pliers is obtained which allows, for example, to lower the wires in a crimping tool or to dip the ends of the wires in a water bath. tinning.

Claims (10)

  1. A clamp for fitting to a conveyor in an automatic cabling machine for the purpose of holding one or more electrically conductive wires, characterized in that said clamp includes two pairs of jaws (15a, 15b) hinged to a fixed base (13), each of said pairs comprising two jaws which are symmetrical about a plane of symmetry (PP') and which are fitted with return means (17a, 17b) for urging them automatically towards a closed position, said pairs being spaced apart by an intermediate space (19), said clamp further including a central piston (20) which is situated in said intermediate space, which is symmetrical about said plane of symmetry (PP'), and which is fitted with return means (23) for urging it automatically towards the three ends of said jaws.
  2. A clamp according to claim 1, characterized in that the upper face of said piston includes a V-shaped notch (24) which is symmetrical about said plane of symmetry and which is outwardly flared.
  3. A clamp according to claim 2, characterized in that an inside edge of the free end of each jaw is provided with a slope (25a, 25b) which is down and inwardly inclined.
  4. A clamp according to claim 3, characterized in that the inside edge of each of said jaws includes a concave notch (26a, 26b) situated beneath the bottom end of said slope (25a, 25b) and delimiting in conjunction with the flared notch (24) in the upper face of said piston (20) a passage of variable section in which one or more electrically conductive wires (28) may be held together.
  5. A clamp according to one of the claims 1 to 4, characterized in that each of the jams include a projecting lug (27a, 27b) enabling said jaws to be moved apart by pressing against said lugs, thereby causing the wires held by said clamp to be ejected.
  6. A clamp according to claim 4, characterized in that said flared piston notch (24) and said concave jaw notches (26a, 26b) are shaped so as to delimit a passage which is generally circular in shape.
  7. A clamp according to claim 6, characterized in that said piston notch (24) is widely flared and said jaw notches (26a, 26b) are highly curved, thereby delimiting a passage which is elongate in a direction perpendicular to said plane of symmetry (PP'), enabling thus a plurality of wires to be brought toghether side-by-side in order to form a flat bundle.
  8. A clamp according to claim 6, characterized in that said piston notch (24) has a small aperture angle and said jaw notches (26a, 26b) are only slight curved, thereby delimiting a passage which is elongate in the plane of symmetry, enabling a plurality of wires (28) to be brought toghether side-by-side in order to forme a flat bundle.
  9. A clamp according to one of preceeding claims 1 to 8, characterized in that said clamp is mounted on a conveyor by means of a support (8, 10), said support being capable of being displaced vertically by a vertical pusher, thereby enabling the lengths of wire held by said clamp to be displaced vertically.
  10. A device for inserting wires into a clamp according to one of the claims 1 to 9, characterized in that said device comprises two pairs of jaws (32a, 32b) which are actuated by an actuator (31) and which are space further apart than the overall width of said clamp.
EP88430017A 1987-08-07 1988-07-15 Automatic wiring machine conveyors fitted with pliers for retaining one or several conductors Expired - Lifetime EP0305307B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8711392 1987-08-07
FR8711392A FR2619038A1 (en) 1987-08-07 1987-08-07 PLIERS, EQUIPPED WITH CONVEYORS OF AUTOMATIC WIRING MACHINES, FOR HOLDING ONE OR MORE CONDUCTIVE WIRES

Publications (2)

Publication Number Publication Date
EP0305307A1 EP0305307A1 (en) 1989-03-01
EP0305307B1 true EP0305307B1 (en) 1993-06-16

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EP88430017A Expired - Lifetime EP0305307B1 (en) 1987-08-07 1988-07-15 Automatic wiring machine conveyors fitted with pliers for retaining one or several conductors

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US (1) US4877228A (en)
EP (1) EP0305307B1 (en)
JP (1) JPH0632245B2 (en)
DE (1) DE3881791T2 (en)
ES (1) ES2040887T3 (en)
FR (1) FR2619038A1 (en)

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Publication number Publication date
US4877228A (en) 1989-10-31
DE3881791D1 (en) 1993-07-22
JPH01186578A (en) 1989-07-26
DE3881791T2 (en) 1993-10-07
FR2619038A1 (en) 1989-02-10
JPH0632245B2 (en) 1994-04-27
ES2040887T3 (en) 1993-11-01
EP0305307A1 (en) 1989-03-01
FR2619038B1 (en) 1993-02-26

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