EP1225658A1 - Crimping tool and device for flexible circuits and crimping station having such a device - Google Patents

Crimping tool and device for flexible circuits and crimping station having such a device Download PDF

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Publication number
EP1225658A1
EP1225658A1 EP02001086A EP02001086A EP1225658A1 EP 1225658 A1 EP1225658 A1 EP 1225658A1 EP 02001086 A EP02001086 A EP 02001086A EP 02001086 A EP02001086 A EP 02001086A EP 1225658 A1 EP1225658 A1 EP 1225658A1
Authority
EP
European Patent Office
Prior art keywords
crimping
block
contacts
flexible circuit
anvil
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
EP02001086A
Other languages
German (de)
French (fr)
Other versions
EP1225658B1 (en
Inventor
Flavio M. Fantini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FCI SA
Original Assignee
FCI SA
Framatome Connectors International SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FCI SA, Framatome Connectors International SAS filed Critical FCI SA
Publication of EP1225658A1 publication Critical patent/EP1225658A1/en
Application granted granted Critical
Publication of EP1225658B1 publication Critical patent/EP1225658B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H01R12/67—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals
    • H01R12/68—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals comprising deformable portions
    • 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
    • H01R43/01—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for connecting unstripped conductors to contact members having insulation cutting edges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2495—Insulation penetration combined with permanent deformation of the contact member, e.g. crimping
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49194—Assembling elongated conductors, e.g., splicing, etc.
    • Y10T29/49195—Assembling elongated conductors, e.g., splicing, etc. with end-to-end orienting
    • Y10T29/49199—Assembling elongated conductors, e.g., splicing, etc. with end-to-end orienting including deforming of joining bridge
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49218—Contact or terminal manufacturing by assembling plural parts with deforming
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53722—Annular work with radially acting tool inside annular work

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The tool for crimping the contacts (10) on to a flexible circuit (40). includes a heavy block (1) provided with a number of crimping imprints (3). The tool is mounted on a press (9) on a base (50). The heavy block is mounted above the contact, with the press below for simultaneous formation of multiple connections. The tool and machine are used for crimping the contacts (10) which are eventually intended to lie within a connector box (20) on a flexible circuit (40). The tool comprises a heavy block (1) provided with a number of crimping imprints (3). The tool is mounted on a press (9) on a base (50), with this press coming into contact with the contacts mounted in the connector under the flexible circuit. The connector includes a multi-point network of crimping matrices, and the heavy block includes projecting tiles of polygonal section, with the base cut away and machined, in order for form a corresponding matrix.

Description

L'invention concerne un outil et un dispositif de sertissage de contacts sur circuits souples ainsi qu'une station de sertissage notamment adaptés à l'assemblage et la réalisation de faisceaux munis de connecteurs sur circuits souples.The invention relates to a tool and a device for crimping of contacts on flexible circuits as well as a crimping station particularly suitable for assembly and making beams with connectors on flexible circuits.

Les circuits souples sont des circuits électriques comportant une feuille isolante sur laquelle sont déposées des pistes conductrices, ces pistes étant elles mêmes éventuellement recouverte d'une seconde feuille isolante de protection.Flexible circuits are electrical circuits comprising an insulating sheet on which are deposited conductive tracks, these tracks being they same possibly covered with a second sheet protective insulation.

Le raccordement de tels circuits à des contacts électriques se fait notamment par une technique de percement d'isolant et de sertissage et il est connu d'utiliser pour ce faire des contacts munis d'une terminaison de sertissage comportant des pointes disposées en couronne et orientées perpendiculairement au circuit souple à raccorder. Le document US 4 749 368 décrit notamment la réalisation d'éléments de contact et de raccordement de composants munis de pointes de connexion disposées en couronne. The connection of such circuits to contacts electric is done in particular by a technique of insulation piercing and crimping and it is known to use for this purpose contacts provided with a crimp termination with spikes arranged in a crown and oriented perpendicular to the flexible circuit to be connected. US 4,749,368 describes in particular the production of contact elements and for connecting components fitted with connection arranged in a crown.

Le sertissage des contacts sur le circuit souple s'effectue traditionnellement en disposant les contacts sous le circuit souple en regard des pistes conductrices du circuit souple puis en sertissant les contacts sur le circuit souple à l'aide de matrices de sertissages formées en bout de broches cylindriques montées dans un bâti, un dispositif de presse venant appliquer les broches cylindriques sur le circuit souple du côté opposé aux couronnes, ce, au centre des couronnes, une surface formant enclume étant disposée sous les contacts pour appliquer une contre pression. Le résultat de l'opération de sertissage est un percement de l'isolant par les pointes, les pointes étant ensuite rabattues en pétales.Crimping of contacts on the flexible circuit is traditionally done by arranging the contacts under the flexible circuit opposite the conductive tracks of the flexible circuit then by crimping the contacts on the flexible circuit using crimping dies formed at the end of cylindrical pins mounted in a frame, a press device applying the cylindrical pins on the flexible circuit on the opposite side to the crowns, this, in the center of the crowns, a surface forming an anvil being disposed under the contacts for apply back pressure. The result of the operation is a piercing of the insulation by the points, the points then being folded down into petals.

Le principe utilisant de telles broches est par exemple décrit dans le document "SAE technical paper series 870553 Flex foil crimp technology - International Congress and Exposition Detroit Michigan 23 - 27 février 1987.The principle using such pins is for example described in the document "SAE technical paper series 870553 Flex foil crimp technology - International Congress and Exposition Detroit Michigan February 23 - 27 1987.

Le diamètre des couronnes est de l'ordre du millimètre pour des circuits et des contacts destines à véhiculer des courants de l'ordre de quelques Ampères.The diameter of the crowns is of the order of a millimeter for circuits and contacts intended to convey currents on the order of a few Amps.

Pour des circuits souples à grand nombre de pistes avec par exemple un pas entre pistes de 1 à 5 mm il est nécessaire de réaliser un grand nombre de broches de précision montées dans un bâti lui même pourvu de trous de réception des broches usinées avec une grande précision, les broches devant par ailleurs au niveau de leurs terminaisons de sertissage présenter une coplanaréité très stricte.For flexible circuits with a large number of tracks with for example a pitch between tracks of 1 to 5 mm it is necessary to make a large number of pins precision mounted in a frame itself provided with holes receiving spindles machined with a large precision, the pins also in front of their crimp terminations present a very strict co-planarity.

Une telle réalisation est coûteuse et, même si les broches ont une durée de vie importante de l'ordre de 800 000 sertissages, des risques de rupture existent et l'opération de remplacement d'une broche est complexe, les broches étant chacune maintenue dans le bâti par des tiges montées perpendiculairement aux broches dans le bâti.Such an implementation is expensive and, even if the pins have a long service life of around 800 000 crimps, risks of rupture exist and the operation of replacing a spindle is complex, the pins each being held in the frame by rods mounted perpendicular to the pins in the frame.

Par ailleurs, lors du sertissage, il se peut que les broches viennent frapper selon un axe différent de l'axe perpendiculaire passant par le centre de la couronne. Dans ce cas, l'empreinte de sertissage présentera des irrégularités dans la forme des pétales et dans un cas particulièrement défavorable une pointe pourra ne pas être repliée ou rester prisonnière dans l'isolant ce conduisant ainsi à une dégradation des caractéristiques électriques et mécaniques du sertissage.In addition, during crimping, it may be that the pins strike along an axis different from the axis perpendicular through the center of the crown. In this case, the crimping impression will show irregularities in the shape of the petals and in one case particularly unfavorable a tip may not be folded back or remain trapped in the insulation thus leading to a degradation of the characteristics electrical and mechanical crimping.

La présente invention propose notamment une structure de matrices de sertissage simplifiée et peu onéreuse qui permet de contrôleur très précisément le pas entre les matrices de sertissage, la coplanaréité des matrices et de minimiser les défauts obtenus lors du sertissage en réalisant une déformation contrôlée simultanée de toutes les pointes.The present invention notably provides a structure for simplified and inexpensive crimping dies which allows to control very precisely the pitch between crimping dies, coplanarity of dies and to minimize the defects obtained during crimping by achieving simultaneous controlled deformation of all peaks.

Dans ce but et selon un premier aspect, l'invention est basée principalement sur la réalisation d'un outil de sertissage de palettes de contacts électriques sur des pistes conductrices d'un circuit souple, cet outil comportant un réseau multipoints de matrices de sertissage constitué à partir d'un bloc massif comportant au moins une surface plane sur laquelle un réseau de pavés de section polygonale et à base évasée est usiné, les pavés constituant les matrices.For this purpose and according to a first aspect, the invention is based mainly on the creation of a crimping of electrical contact pallets on conductive tracks of a flexible circuit, this tool comprising a multi-point network of matrices of crimping made from a solid block comprising at least one flat surface on which a network of pavers of polygonal section and with flared base is machined, the blocks making up the matrices.

Les pavés peuvent notamment avoir un profil formant sur chacune de leurs faces latérales une courbe s'évasant de la section terminale du pavé vers la base du pavé zone de liaison du pavé et du bloc.The pavers may in particular have a profile forming on each of their lateral faces a curve widening by the terminal section of the paver towards the base of the area paver connection of the block and the block.

De manière avantageuse le bloc constituant la matrice multipoints peut comporter un réseau de pavés sur chacune des deux surfaces.Advantageously the block constituting the matrix multipoint can have a network of pavers on each of the two surfaces.

En mode de réalisation particulier adapté à des contacts munis de pointes de sertissage disposées en couronne, la section terminale polygonale des pavés est orientée de telle sorte que les faces latérales des pavés viennent en contact avec les pointes de sertissage lors de l'opération de sertissage de façon à repousser les pointes et de les conformer en pétales.In a particular embodiment suitable for contacts fitted with crimping pins arranged in a crown, the polygonal end section of the pavers is oriented from so that the side faces of the pavers come in contact with the crimping points during the crimping operation so as to repel the tips and conform them into petals.

L'invention concerne en outre un dispositif de sertissage simultané sur un circuit souple d'éléments de contact électriques alignés dans un plan.The invention further relates to a crimping device simultaneous on a flexible circuit of contact elements electric aligned in a plane.

Ce dispositif est adapté pour le sertissage d'un connecteur muni d'une pluralité de contacts. Dans ce type de connecteur les contacts comportent d'une part une terminaison de raccordement à un circuit souple, cette terminaison comportant une palette munies de pointes disposées en couronne, les pointes étant constituées par un poinçonnage en croix de la palette puis un emboutissage de la palette repliant les pointes et dégageant un trou circulaire formant la couronne.This device is suitable for crimping a connector provided with a plurality of contacts. In this type of connector the contacts comprise on the one hand a termination of connection to a flexible circuit, this termination including a pallet with spikes arranged in a crown, the points being constituted by a cross punching of the pallet then a stamping of the pallet folding the points and releasing a circular hole forming the crown.

Les contacts comportent d'autre part une terminaison de connexion avec un contact complémentaires, les contacts et le circuit souple étant reçus dans un boítier isolant muni d'une zone ouverte dégageant la zone de sertissage des contacts sur le circuit souple au dessus et au dessous de la zone de sertissage.The contacts also include a termination of connection with a complementary contact, the contacts and the flexible circuit being received in an insulating housing provided with an open area clearing the crimping area contacts on the flexible circuit above and at below the crimping area.

Pour sertir les contacts le dispositif comporte d'une part une enclume formant une surface d'appui inférieure pour les éléments de contact électriques, le dispositif de sertissage comportant d'autre part un dispositif mobile de presse muni d'un bloc dont la surface parallèle au plan d'alignement des contacts comporte une pluralité de matrices de sertissage constituées par des pavés à section terminale polygonale.To crimp the contacts, the device has a share an anvil forming a lower bearing surface for electrical contact elements, the device crimping device further comprising a device press mobile fitted with a block whose parallel surface at the contact alignment plane has a plurality of crimping dies constituted by blocks with polygonal end section.

L'enclume disposée sous les palettes peut comporter au moins un élément de positionnement et avantageusement deux éléments de positionnement disposés en regard de couronnes de deux contacts disposés à chaque extrémité du circuit souple, chaque élément de positionnement étant introduit dans l'un des trous circulaires des couronnes.The anvil placed under the pallets may include less a positioning element and advantageously two positioning elements arranged opposite crowns of two contacts arranged at each end of the flexible circuit, each positioning element being inserted into one of the circular holes in the crowns.

Le circuit souple est alors positionné sur les palettes et le bloc appliqué par la presse sur le circuit souple, chacune des matrices appliquant fortement localement le circuit souple sur les pointes de façon à percer le circuit souple puis à cambrer les pointes qui viennent ainsi sertir les palettes sur le circuit souple et effectuer la liaison électrique entre les contacts et les pistes du circuit souple.The flexible circuit is then positioned on the pallets and the block applied by the press on the flexible circuit, each of the matrices applying strongly locally the flexible circuit on the tips so as to pierce the flexible circuit then to arch the points which come thus crimp the pallets on the flexible circuit and make the electrical connection between the contacts and the flexible circuit tracks.

L'ensemble enclume et presse munie du bloc de sertissage selon l'invention constitue ainsi un dispositif de sertissage optimisé permettant un sertissage de précision avec une grande reproductibilité des sertissages et réalisant une empreinte de sertissage apte à être contrôlée par un dispositif caméra avec un taux d'erreur minimisé. The anvil and press assembly fitted with the crimping block according to the invention thus constitutes a device for Optimized crimping for precision crimping with high reproducibility of crimps and producing a crimping imprint capable of being controlled by a camera device with an error rate minimized.

L'implantation des pavés constituant les matrices de sertissage sera réalisée en fonction du nombre de contacts par connecteur et du nombre et de la disposition des couronnes de sertissage. Un dispositif pour lequel les pavés auront une section polygonale différente en fonction du diamètre des couronnes est bien entendu possible.The installation of the pavers constituting the matrices of crimping will be carried out depending on the number of contacts per connector and the number and arrangement crimping crowns. A device for which the paving stones will have a different polygonal section in function of the crown diameter is of course possible.

D'autres aspects et avantages de l'invention seront mieux comprise à la lecture de la description qui va suivre d'un mode de réalisation non limitatif en référence aux dessins qui représentent:

  • En figure 1 un exemple de module de connecteur pour circuit souple auquel l'invention est applicable;
  • En figures 2A et 2B des exemples de contacts munis de couronnes de pointes à sertir sur circuit souple;
  • En figure 3 une vue d'un dispositif de sertissage conforme à l'invention;
  • En figure 4A une vue agrandie d'une couronne selon la figure 2 avant sertissage;
  • En figure 4B une vue en coupe d'un élément de connexion par sertissage pendant le sertissage;
  • En figure 5 une vue schématique d'une machine de sertissage et de câblage de connecteurs conforme à l'invention;
  • En figures 6A et 6B une vue schématique agrandie du poste de sertissage selon la figure 5;
  • En figure 7A une vue d'un circuit souple serti selon l'art antérieur;
  • En figure 7B une vue d'un circuit souple serti par le dispositif selon l'invention.
    • Other aspects and advantages of the invention will be better understood on reading the description which follows of a nonlimiting embodiment with reference to the drawings which represent:
  • In Figure 1 an example of connector module for flexible circuit to which the invention is applicable;
  • In FIGS. 2A and 2B, examples of contacts provided with crowns of tips to be crimped on a flexible circuit;
  • In Figure 3 a view of a crimping device according to the invention;
  • In Figure 4A an enlarged view of a crown according to Figure 2 before crimping;
  • In Figure 4B a sectional view of a connection element by crimping during crimping;
  • In Figure 5 a schematic view of a crimping machine and wiring connectors according to the invention;
  • In Figures 6A and 6B an enlarged schematic view of the crimping station according to Figure 5;
  • In FIG. 7A a view of a crimped flexible circuit according to the prior art;
  • In FIG. 7B a view of a flexible circuit crimped by the device according to the invention.

    • En référence à la figure 3 un outil de sertissage conforme à un premier aspect de l'invention est représenté. Cet outil est basé principalement sur la réalisation d'un réseau multipoints de matrices de sertissage constitué à partir d'un bloc massif 1.Referring to Figure 3 a crimping tool according to a first aspect of the invention is represented. This tool is mainly based on the creation of a multi-point network of matrices of crimping made from a solid block 1.

    Ce réseau peut être réalisé par un procédé d'électro-érosion afin d'obtenir une grande précision et un état de surface très lisse.This network can be produced by an electro-erosion process in order to obtain high accuracy and a state of very smooth surface.

    Le réseau est réalisé sur une surface plane 2 du bloc et le réseau de matrices comporte un réseau de pavés 3 de section polygonale et à base évasée, les pavés constituant les matrices. The network is made on a flat surface 2 of the block and the network of matrices comprises a network of blocks 3 of polygonal and flared section, the pavers constituting the matrices.

    Afin de courber les pointes de sertissages visibles en figure 4A les pavés ont un profil formant sur chacune de leurs faces latérales une courbe s'évasant de la section terminale du pavé vers l'emplanture du pavé. Les faces latérales sont appliquées contre les pointes et les forcent à se conformer en pétales.In order to bend the visible crimp tips in Figure 4A the pavers have a profile forming on each of their side faces a curve widening from the section terminal of the paver towards the root of the paver. The faces side are applied against the tips and force to comply in petals.

    Le bloc constituant la matrice multipoints peut comporter un réseau de pavés sur deux surfaces 2, 4 parallèles opposées du bloc. Ceci permet lorsqu'un premier réseau de matrices est usé, de minimiser les temps d'immobilisation de la machine en retournant le bloc.The block constituting the multipoint matrix can comprise a network of pavers on two parallel surfaces 2, 4 opposite of the block. This allows when a first network of dies is worn, minimize downtime machine by turning the block over.

    Des contacts à sertir utilisables avec les pavés de matrices de sertissage de l'invention sont représentés en figures 2A et 2B. Ces contacts 10 sont munis de pointes 11 de sertissage disposées en couronnes 12.Crimp contacts usable with paving stones crimping dies of the invention are shown in Figures 2A and 2B. These contacts 10 are provided with pins 11 for crimping arranged in rings 12.

    Les contacts représentés comportent d'une part une terminaison de raccordement à un circuit souple 40, cette terminaison comportant une palette 13 munie de pointes 11 disposées en couronne 12, les pointes étant constituées par un poinçonnage en croix de la palette puis un emboutissage de la palette repliant les pointes et dégageant un trou circulaire 14 formant la couronne 12. On the one hand, the contacts represented include a termination of connection to a flexible circuit 40, this termination comprising a pallet 13 provided with spikes 11 arranged in a crown 12, the points being formed by a cross punching of the pallet then a stamping of the pallet folding the points and releasing a circular hole 14 forming the crown 12.

    Les contacts représentés comportent d'autre part une terminaison 15 de connexion avec un contact complémentaire. Comme visible en figure 1 les contacts et le circuit souple sont reçus dans un boítier isolant 21 d'un module de connecteur 20, le boítier 21 étant muni d'une zone ouverte 22 dégageant la zone de sertissage des contacts sur le circuit souple au dessus et au dessous de la zone de sertissage.The contacts shown also include a termination 15 of connection with a contact complementary. As visible in figure 1 the contacts and the flexible circuit are received in an insulating housing 21 a connector module 20, the housing 21 being provided an open area 22 clearing the crimping area of the contacts on the flexible circuit above and below the crimping area.

    Afin de sertir l'ensemble des contacts en position dans le module de connecteur 20 la section terminale polygonale des pavés est orientée de telle sorte que les faces latérales des pavés viennent en contact avec les pointes de sertissage lors de l'opération de sertissage de façon à repousser les pointes et de les conformer en pétales 141, les empreintes des matrices 201, 202, 203, 204 visibles sur le circuit souple en figure 7B sont de section carrée à la différence des empreintes 211, 212, 213, 214 circulaires résultant de l'application des broches de l'art antérieur visibles en figure 7A. La comparaison des figures 7A et 7B montre le résultat de l'application des faces des pavés contre les pointes.In order to crimp all the contacts in position in connector module 20 terminal section polygonal of the cobblestones is oriented so that the side faces of the pavers come into contact with the crimping tips during the crimping operation so as to push back the points and to conform them in petals 141, the imprints of the matrices 201, 202, 203, 204 visible on the flexible circuit in FIG. 7B are of square section unlike the footprints 211, 212, 213, 214 circulars resulting from the application of pins of the prior art visible in FIG. 7A. The comparison of Figures 7A and 7B shows the result of applying the faces of the pavers against the tips.

    Du fait que les pavés appuient par leurs faces contre les pointes, la pression est appliquée par un segment de droite du pavé contre les arêtes latérales des pointes et conduit à un aplatissement de la section des pointes et une déformation homogène de la pointe, la zone de contact s'élargissant au long de la descente du pavé. Dans l'art antérieur les broches étant de type conique, la pression générée par les broches s'applique au point de contact entre la broche et la pointe, ce point de contact se déplaçant sur l'axe central vertical de la pointe, il n'y a pas aplatissement du pétale mais gauchissement du pétale et déformation non correctement contrôlée du pétale. Il est visible en figure 7B que les pétales obtenus par l'application des pavés 3 ont été repliés plus régulièrement et ont une surface repliée plus importante que selon la technique antérieure. De plus la base 142 des pétales est droite ce qui facilite la mesure de la dimension et de la position des pétales par un dispositif de mesure par caméra assisté par ordinateur.Because the pavers press by their faces against the points, the pressure is applied by a segment of right of the pavement against the side edges of the points and leads to a flattening of the tip section and homogeneous deformation of the tip, the contact area widening along the descent of the pavement. In art anterior, the pins being conical, the pressure generated by pins applies to point of contact between the spindle and the tip, this point of contact moving on the vertical central axis of the point, there not flattening of the petal but warping of the petal and not properly controlled deformation of the petal. It is visible in FIG. 7B that the petals obtained by applying the blocks 3 have been folded more regularly and have a more folded surface important than according to the prior art. Furthermore the base 142 of the petals is straight which facilitates the measurement the size and position of the petals by a computer-assisted camera measurement device.

    Pour constituer le dispositif de sertissage et comme visible en figure 5 l'outil constitué du bloc formant la matrice usinée doit être solidarisé à une presse 9. Pour cela le bloc représenté comporte des trous 5, 6 parallèles aux deux surfaces opposées en regard portant les pavés, les trous étant disposés dans un plan médian à ces deux surfaces de façon à pouvoir utiliser les deux côtés du bloc.To constitute the crimping device and as visible in Figure 5 the tool consisting of the block forming the machined die must be secured to a press 9. To that the block shown has holes 5, 6 parallel to the two opposite surfaces facing bearing the pavers, the holes being arranged in a median plane at these two surfaces so that you can use both sides of the block.

    Ces trous reçoivent des tiges 7, 8 de maintien et de guidage du bloc pour solidariser le bloc avec un support lui même solidaire du piston de la presse de sertissage 9. These holes receive rods 7, 8 for holding and block guide to secure the block with a support itself secured to the piston of the crimping press 9.

    Pour sa fixation le bloc peut comporter des pions ou des rails de maintien dans le support, l'essentiel étant que le bloc soit précisément guidé par la presse lors de l'opération de sertissage.For its fixing the block can include pawns or holding rails in the support, the main thing is that the block is precisely guided by the press during the crimping operation.

    En plus d'un dispositif mobile de presse 9 muni d'un bloc 1 dont la surface parallèle au plan d'alignement des contacts comporte une pluralité de matrices de sertissage constituées par des pavés 3 à section terminale polygonale, le dispositif ou poste de sertissage adapté pour le sertissage d'un connecteur 20 muni d'une pluralité de contacts 10, comporte une enclume 50 formant une surface d'appui inférieure pour les éléments de contact électriques 10. Cette enclume est plus particulièrement visible en figure 6B.In addition to a mobile press device 9 provided with a block 1 whose surface parallel to the alignment plane of the contacts comprises a plurality of crimping dies constituted by blocks 3 with terminal section polygonal, the appropriate crimping device or station for crimping a connector 20 provided with a plurality of contacts 10, includes an anvil 50 forming a lower bearing surface for the elements of electrical contact 10. This anvil is more particularly visible in Figure 6B.

    L'enclume 50 est destinée à être disposée sous les palettes 13 des contacts 10 lorsque - les modules de connecteur 20 sont amenés au niveau du poste de sertissage.The anvil 50 is intended to be placed under the pallets 13 of contacts 10 when - the modules connector 20 are brought to the level of the crimping.

    Cette enclume telle que décrite en figure 6B comporte au moins un élément de positionnement 51 et avantageusement deux éléments de positionnement.This anvil as described in FIG. 6B comprises at at least one positioning element 51 and advantageously two positioning elements.

    Pour l'opération de sertissage, les modules de connecteurs ainsi que les circuits souples sont déplacés jusqu'à ce que l'enclume 50 soit sous les palettes 13 des contacts 10. Les éléments de positionnement sont alors disposés en regard de couronnes de deux contacts disposés à chaque extrémité du circuit souple 40, chaque élément de positionnement étant alors introduit dans un trou circulaire d'une couronne soit par déplacement vertical de l'enclume soit par déplacement vertical du module.For the crimping operation, the connectors as well as flexible circuits are moved until the anvil 50 is under the pallets 13 of the contacts 10. The positioning elements are then arranged opposite crowns of two contacts arranged at each end of the flexible circuit 40, each element positioning then being introduced into a hole circular of a crown either by vertical displacement of the anvil either by vertical displacement of the module.

    Comme visible en figure 5, un dispositif de maintien 126 du module de connecteur pendant le sertissage est aussi prévu, ce dispositif étant monté en parallèle au bloc sur la presse 9As can be seen in FIG. 5, a holding device 126 of the connector module during crimping is also provided, this device being mounted in parallel to the block on the press 9

    Selon la figure 6B les éléments de positionnement comportent un dispositif piston constitué d'un tube 52 encastré dans l'enclume, ce tube recevant une tige 53 montée dans le tube avec un ressort 54 permettant le coulissement de la tige dans le tube.According to FIG. 6B, the positioning elements have a piston device consisting of a tube 52 embedded in the anvil, this tube receiving a rod 53 mounted in the tube with a spring 54 allowing the sliding of the rod in the tube.

    Comme décrit en figure 6A le circuit souple 40 est alors positionné sur les palettes 13 et le bloc est appliqué par la presse sur le circuit souple, chacun des pavés 3 appliquant fortement localement le circuit souple 40 sur les pointes 11 de façon à percer le circuit souple et les pistes 41 puis à cambrer les pointes qui viennent ainsi sertir les palettes sur le circuit souple et effectuer la liaison électrique entre les contacts 10 et les pistes conductrices 41 du circuit souple. L'opération de sertissage est visible schématiquement en figure 4B.As described in FIG. 6A, the flexible circuit 40 is then positioned on pallets 13 and the block is applied by the press on the flexible circuit, each of the blocks 3 strongly applying the flexible circuit 40 locally to the points 11 so as to pierce the flexible circuit and the tracks 41 then to arch the tips that come as well crimp the pallets on the flexible circuit and perform the electrical connection between contacts 10 and tracks conductors 41 of the flexible circuit. The operation of crimping is visible schematically in Figure 4B.

    Lors de l'application des pavés formant matrices sur le circuit souple puis sur les pointes de la couronne, les tiges 53 du dispositif de positionnement s'effacent vers le bas sous l'action des matrices.When applying the matrix pavers on the flexible circuit then on the tips of the crown, the rods 53 of the positioning device disappear towards the bottom under the action of the matrices.

    Un exemple de station de sertissage automatique complète comportant un poste de sertissage conforme à l'invention est visible en figure 5. Cette station peut comporter un dispositif automatisé d'amenée 100 de ces connecteurs avec leurs contacts pré-montés.An example of a complete automatic crimping station comprising a crimping station according to the invention is visible in Figure 5. This station may include a automated device for feeding 100 of these connectors with their pre-assembled contacts.

    Les connecteurs peuvent être disposés et encliquetés sur une bande porteuse 60 et fournis en rouleaux, un dispositif d'alimentation de la station de sertissage comportant alors un poste de déroulage en continu 121 de type connu en soi.Connectors can be arranged and snapped onto a carrier strip 60 and supplied in rolls, a crimp station supply device then comprising a continuous unwinding station 121 of type known per se.

    Dans le cas où les connecteurs sont disposés sur une bande porteuse 60 la station comportera, après le poste de déroulage, un dispositif 100 de désolidarisation des connecteurs de la bande porteuse et d'amenée des connecteurs unitaires vers le poste de sertissage.In the case where the connectors are arranged on a carrier band 60 the station will include, after the post unwinding, a device 100 for separating the connectors of the carrier strip and of the unit connectors to the crimping station.

    Visible en figure 1, les connecteurs peuvent être munis d'une fenêtre de dégagement de la zone de sertissage et munis en outre d'un volet 28 de rétention du circuit souple. Le volet peut comporter un cadre relié par une charnière 23 au boítier de connecteur recevant les contacts.Visible in Figure 1, the connectors can be fitted a window for clearing the crimping area and further provided with a circuit retention flap 28 flexible. The shutter may include a frame connected by a hinge 23 to the connector housing receiving the contact.

    Le cadre permet d'effectuer l'opération de sertissage au travers du volet 28, le volet étant refermé après l'opération de sertissage, ce volet 28 comportant une branche arrière munie d'un ou plusieurs bossages 25 d'appui et de mise en pression du circuit souple pour isoler et protéger la zone de sertissage d'éventuelles contraintes appliquées sur le circuit souple en dehors du connecteur.The frame allows the crimping operation to be carried out across flap 28, the flap being closed after the crimping operation, this flap 28 comprising a rear leg with one or more bosses 25 support and pressurization of the flexible circuit for isolate and protect the crimping area from possible stresses applied on the flexible circuit outside the connector.

    L'implantation des pavés constituant les matrices de sertissage sera réalisée en fonction du nombre de contacts par connecteur, du pas entre les contacts et du nombre et de la disposition des couronnes de sertissage sur les contacts. Un dispositif pour lequel les pavés auront une section différente en fonction du diamètre des couronnes est bien entendu possible de même que la réalisation de blocs pour lesquels les faces portant les matrices de sertissage ont des configurations différentes pour permettre de changer de matrices selon les configurations de circuits souples et de connecteurs à sertir.The installation of the pavers constituting the matrices of crimping will be carried out depending on the number of contacts by connector, pitch between contacts and number and arrangement of crimping crowns on the contacts. A device for which pavers will have a different section depending on the diameter of the crowns is of course possible as is the production of blocks for which the faces carrying the crimping dies have different configurations to allow to change matrices according to flexible circuit and connector configurations crimp.

    Claims (11)

    Outil de sertissage de palettes (13) de contacts électriques (10) sur des pistes conductrices (41) d'un circuit souple (40) caractérisé en ce qu'il comporte un réseau multipoints de matrices de sertissage constitué à partir d'un bloc massif (1) comportant au moins une surface plane (2) sur laquelle un réseau de pavés (3) de section polygonale et à base évasée est usiné, les pavés constituant les matrices.Tool for crimping pallets (13) of electrical contacts (10) on conductive tracks (41) of a flexible circuit (40) characterized in that it comprises a multi-point network of crimping dies formed from a block solid (1) comprising at least one flat surface (2) on which a network of pavers (3) of polygonal section and with flared base is machined, the pavers constituting the dies. Outil selon la revendication 1 caractérisé en ce que les pavés (3) ont un profil formant sur chacune de leurs faces latérales une courbe s'évasant de la section terminale du pavé vers la base du pavé.Tool according to claim 1 characterized in that the blocks (3) have a profile forming on each of their lateral faces a curve widening from the end section of the block towards the base of the block. Outil selon l'une des revendications 1 ou 2 caractérisé en ce que le bloc constituant la matrice multipoints comporte un réseau de pavés sur deux surfaces (2, 4) parallèles opposées du bloc.Tool according to either of Claims 1 and 2, characterized in that the block constituting the multi-point matrix comprises a network of blocks on two opposite parallel surfaces (2, 4) of the block. Outil selon l'une des revendications précédentes adapté à des contacts (10) munis de pointes (11) de sertissage disposées en couronnes (12), caractérisé en ce que la section terminale polygonale des pavés est orientée de telle sorte que les faces latérales des pavés viennent en contact avec les pointes de sertissage lors de l'opération de sertissage de façon à repousser les pointes et de les conformer en pétales.Tool according to one of the preceding claims, suitable for contacts (10) provided with crimping points (11) arranged in crowns (12), characterized in that the polygonal end section of the blocks is oriented so that the lateral faces of the blocks come into contact with the crimping points during the crimping operation so as to repel the points and to conform them into petals. Outil selon l'une des revendications précédentes caractérisé en ce que le bloc constituant la matrice usinée comporte des trous (5, 6) parallèles aux deux surfaces en regard dans un plan médian à ces deux surfaces, ces trous recevant des tiges (7, 8) de maintien et de guidage du bloc ces tiges solidarisant le bloc avec un support lui même solidaire du piston d'une presse de sertissage (9).Tool according to one of the preceding claims, characterized in that the block constituting the machined matrix comprises holes (5, 6) parallel to the two facing surfaces in a median plane to these two surfaces, these holes receiving rods (7, 8 ) holding and guiding the block these rods securing the block with a support itself secured to the piston of a crimping press (9). Outil selon l'une des revendications 1 à 4 caractérisé en ce que le bloc comporte des pions ou rails de maintien dans un support lui même solidaire du piston d'une presse de sertissage (9).Tool according to one of claims 1 to 4 characterized in that the block comprises pins or rails for holding in a support itself integral with the piston of a crimping press (9). Dispositif de sertissage de contacts sur circuit souple caractérisé en ce qu'il comporte -une enclume (50) formant une surface d'appui inférieure pour les éléments de contact électrique (10), un dispositif mobile de presse (9) étant disposé en regard de l'enclume et muni d'un bloc massif (1) dont la surface parallèle au plan d'alignement des contacts comporte une pluralité de matrices de sertissage constituées par des pavés (3) à section terminale polygonale. Device for crimping contacts on a flexible circuit, characterized in that it comprises an anvil (50) forming a lower bearing surface for the electrical contact elements (10), a mobile press device (9) being arranged opposite of the anvil and provided with a solid block (1) whose surface parallel to the alignment plane of the contacts comprises a plurality of crimping dies constituted by blocks (3) with polygonal end section. Dispositif selon la revendication 7 caractérisé en ce que l'enclume (50) disposée sous les palettes (13) comporte au moins un élément de positionnement (51) disposé en regard d'une couronne (12) de pointes de sertissage.Device according to claim 7 characterized in that the anvil (50) disposed under the pallets (13) comprises at least one positioning element (51) disposed opposite a crown (12) of crimping points. Dispositif selon la revendication 8 caractérisé en ce que deux éléments de positionnement disposés en regard de couronnes de deux contacts disposés à chaque extrémité du circuit souple (40), chaque élément de positionnement étant introduit dans un trou circulaire d'une couronne.Device according to claim 8 characterized in that two positioning elements disposed opposite crowns of two contacts arranged at each end of the flexible circuit (40), each positioning element being introduced into a circular hole in a crown. Dispositif selon la revendication 9 caractérisé en ce que les éléments de positionnement comportent un dispositif piston constitué d'un tube (52) encastré dans l'enclume, ce tube recevant une tige (53) montée dans le tube avec un ressort (54) permettant le coulissement de la tige dans le tube.Device according to claim 9 characterized in that the positioning elements comprise a piston device consisting of a tube (52) embedded in the anvil, this tube receiving a rod (53) mounted in the tube with a spring (54) allowing sliding of the rod in the tube. Poste de sertissage de contacts électriques sur circuit souple les contacts et le circuit souple étant reçus dans un module de connecteur électrique caractérisé en ce qu'il comporte un dispositif de sertissage selon l'une des revendications 7 à 10, et en ce que les modules de connecteurs (20) étant munis d'une fenêtre arrière (22) et d'un volet (28) de maintien du circuit souple constitué d'un cadre, le bloc de sertissage est reçu au travers du cadre (28) et l'enclume au travers de la fenêtre (22).Crimping station for electrical contacts on a flexible circuit, the contacts and the flexible circuit being received in an electrical connector module characterized in that it comprises a crimping device according to one of claims 7 to 10, and in that the modules connectors (20) being provided with a rear window (22) and with a flap (28) for holding the flexible circuit consisting of a frame, the crimping block is received through the frame (28) and the anvil through the window (22).
    EP02001086A 2001-01-23 2002-01-22 Crimping tool and device for flexible circuits and crimping station having such a device Expired - Lifetime EP1225658B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR0101184 2001-01-23
    FR0101184A FR2819945A1 (en) 2001-01-23 2001-01-23 TOOL AND CRIMPING DEVICE FOR FLEXIBLE CIRCUIT AND CRIMPING STATION PROVIDED WITH SUCH A DEVICE

    Publications (2)

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    EP1225658A1 true EP1225658A1 (en) 2002-07-24
    EP1225658B1 EP1225658B1 (en) 2007-07-18

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    EP02001086A Expired - Lifetime EP1225658B1 (en) 2001-01-23 2002-01-22 Crimping tool and device for flexible circuits and crimping station having such a device

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    US (1) US6718815B2 (en)
    EP (1) EP1225658B1 (en)
    AT (1) ATE367663T1 (en)
    DE (1) DE60221167T2 (en)
    ES (1) ES2289017T3 (en)
    FR (1) FR2819945A1 (en)
    IT (1) ITTO20010406A1 (en)

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    Publication number Publication date
    US20020124625A1 (en) 2002-09-12
    DE60221167T2 (en) 2008-03-20
    EP1225658B1 (en) 2007-07-18
    FR2819945A1 (en) 2002-07-26
    DE60221167D1 (en) 2007-08-30
    ITTO20010406A1 (en) 2002-10-27
    ES2289017T3 (en) 2008-02-01
    ITTO20010406A0 (en) 2001-04-27
    US6718815B2 (en) 2004-04-13
    ATE367663T1 (en) 2007-08-15

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