WO2012085374A1 - Device for welding together two plate workpieces, for a spot welding machine - Google Patents

Device for welding together two plate workpieces, for a spot welding machine Download PDF

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Publication number
WO2012085374A1
WO2012085374A1 PCT/FR2011/052752 FR2011052752W WO2012085374A1 WO 2012085374 A1 WO2012085374 A1 WO 2012085374A1 FR 2011052752 W FR2011052752 W FR 2011052752W WO 2012085374 A1 WO2012085374 A1 WO 2012085374A1
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WO
WIPO (PCT)
Prior art keywords
support
recess
tool holder
face
welding
Prior art date
Application number
PCT/FR2011/052752
Other languages
French (fr)
Inventor
Stephane BRICE
Dominique Cros
Original Assignee
Peugeot Citroen Automobiles Sa
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 Peugeot Citroen Automobiles Sa filed Critical Peugeot Citroen Automobiles Sa
Publication of WO2012085374A1 publication Critical patent/WO2012085374A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/10—Spot welding; Stitch welding
    • B23K11/11—Spot welding
    • B23K11/115—Spot welding by means of two electrodes placed opposite one another on both sides of the welded parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/30—Features relating to electrodes
    • B23K11/3009—Pressure electrodes
    • B23K11/3018—Cooled pressure electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/30—Features relating to electrodes
    • B23K11/31—Electrode holders and actuating devices therefor
    • B23K11/318—Supporting devices for electrode holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles

Definitions

  • the present invention relates to a device for welding together two parts, this device being intended to be placed between an upper table and a lower table of a single-point type welding machine.
  • Such welding machines are installed in the shoe shops of the production lines of motor vehicles.
  • each of the two tables of the welding machine is equipped with an electrode carrier, the electrode holder and its electrode.
  • Each of these two supports is specific for each type of part to be welded because it comprises for this purpose equipment to maintain the parts to be welded.
  • the cooling water pipes of the electrodes being integral with the latter may be damaged during successive handling and storage.
  • the object of the present invention is to overcome the disadvantages of the assembly processes mentioned above.
  • This object is achieved, according to the invention, by means of a device for welding together two parts, this device being intended to be placed between an upper table and a lower table of a welding machine, characterized in that it comprises a upper plate and a lower plate interconnected by guide columns perpendicular to these two plates, each of these two plates comprising means for removably attaching to the upper or lower table of the welding machine and a welding electrode perpendicular to the plates and directed axially towards the electrode carried by the other plate, one of these two plates further comprising a support which comprises means for fixing to this support, removably, a tool holder to maintain the two pieces to be welded between the two electrodes.
  • the two trays of the device according to the invention thus form a unitary assembly that is easy to handle and mount between the two tables of the welding machine.
  • the two plates guided by the columns, hold the two electrodes axially relative to each other, so that these electrodes do not require any adjustment.
  • the tool holder attached to one of the two trays allows easy attachment of a tool holder to maintain the two elements to be welded between the two electrodes.
  • the plate comprising said tool holder is the lower plate.
  • the two plates comprise a plate supporting two pipes intended to convey a fluid for cooling the two electrodes respectively during each welding operation.
  • the above plate allows the disconnection of the pipes intended for the cooling of the electrodes so as to remain on the welding machine and thus to reduce the risks of deterioration of these pipes.
  • the electrodes carried by the two plates are each positioned in an electrode holder, the electrode and electrode holder assembly being adjusted and adapted to perform one of the following three operations:
  • the above three operations can thus be performed by three devices according to the invention different from each other by electrode holder assemblies and electrodes preset and adapted for each operation.
  • the tool holder for holding the elements to be welded between the two electrodes is adapted to maintain:
  • This arrangement further facilitates the implementation of the device according to the invention to perform the welding operations mentioned above.
  • the support carried by one of the two trays of the device according to the invention comprises a recess for receiving a part of complementary shape of said tool holder and clamping means for clamping said part. of the tool holder against a face of said recess.
  • This arrangement facilitates the establishment and fixing of the tool holder.
  • clamping means may comprise a screw secured to a clamping handle intended to be maneuvered by the operator.
  • said portion of complementary shape of the tool holder comprises a T-shaped cross-section recess opening on a face of said tool holder intended to be clamped against said face of the recess of said support, said T-shaped cross-section recess being able to slidably engaging a portion of complementary shape projecting from said face of the recess of the support, on which said screw is screwed, said screw being engaged in a bore made in said support between said recess of the support and a face of this support opposed to this recess, the tightening handle of the screw having an annular surface bearing against said face of the support.
  • the tool holder can be mounted easily by sliding it relative to the support and then turning the handle to tighten the screw.
  • said face of the recess of the support is perpendicular to the table on which is fixed said support and said face is directed towards the electrode holder carried by said plate.
  • the portion of the tool holder comprising the T-shaped cross-section recess is made of electrically insulating material.
  • the tool holder comprises a part comprising fastening means for the parts to be welded, this part being traversed by a through hole of the electrode.
  • FIG. 1 is an elevational view of a single-point welding machine of a known type
  • FIG. 2 is a perspective view of a first device according to the invention
  • FIG. 3 is a view similar to FIG. 2 showing a second device according to the invention
  • FIG. 4 is a view similar to FIGS. 2 and 3 showing a third device according to the invention.
  • FIG. 5 shows a sheet metal part and a screw intended to be welded together by means of the device according to FIG. 2,
  • FIG. 6 shows a sheet metal part and a nut intended to be welded together by means of the device according to FIG. 3,
  • FIG. 7 shows two sheet metal parts intended to be welded together by means of the device according to FIG. 4,
  • FIG. 8 is a perspective view of the support intended for the removable attachment of a tool holder
  • FIG. 9 is a view from above of the support of FIG. 8 to which the tool holder is attached.
  • FIG. 10 is a side view of the support and tool holder assembly shown in FIG. 9.
  • FIG. 1 schematically represents a single-point welding machine essentially comprising an upper table 1 vertically movable towards a fixed lower table 2.
  • Figures 2, 3 and 4 each show a device according to the invention for welding together two parts through a single-point weld.
  • Each of the above devices is intended to be placed between the upper table 1 and the lower table 2 of the welding machine, shown in FIG.
  • FIGS. 2 to 4 show that each device comprises an upper plate 3 and a lower plate 4 interconnected by two telescopic guide columns 5, 6 perpendicular to the two plates 3, 4.
  • Each of the two plates 3, 4 comprises means for detachably fixing it in a precise and repetitive geometric position to the upper or lower tables 1 of the welding machine.
  • each plate 3, 4 carries at its center a welding electrode 7, 8 perpendicular to the plate 3, 4 and directed axially towards the electrode 7, 8 carried by the other plate.
  • One of these two plates namely the lower plate 4, further comprises a support 9 which comprises means for removably attaching to this support, a tool holder 24 (not shown in FIGS. 2 to 4) to maintain the two parts to be welded between the two electrodes 7, 8.
  • the displacement of the plate 3 is guided axially relative to the plate by means of the two columns 5, 6, so that the two electrodes 7, 8 move axially towards each other.
  • the trays 3,4 further include a plate 10 carrying two end caps
  • the electrodes 7, 8 carried by the two plates 3, 4 are each positioned in an electrode holder 14, 15.
  • the electrode assembly 7, 8 and electrode holder 14, 15 is preset and adapted to perform one of the following three operations:
  • soldering see FIG. 5
  • soldering see FIG. 6
  • the tool holder which will be described in detail later, intended to hold the two parts to be welded between the two electrodes 7, 8 is adapted to maintain:
  • the three devices according to the invention are designed and preset specifically to perform the three welding operations above.
  • Figures 8 and 9 show that the support 9 fixed on the lower plate 4 comprises a recess 22 for receiving a portion 23 of complementary shape of the tool holder 24 and clamping means for clamping the portion 23 of the tool holder 24 against a flat face 22a of the recess 22.
  • clamping means comprise a screw 25 secured to a clamping handle 26.
  • the portion 23 of complementary shape of the tool holder 24 comprises a recess 27 of T-shaped cross-section opening on a face 23a of the tool holder 24 intended to be clamped against the face 22a of the recess 22 of the support 9.
  • the recess 27 of cross-section T may slide-engage on a portion 28 of complementary shape projecting on the face 22a of the recess 22 of the support 9.
  • This screw 25 is engaged in a bore 29 made in the support 9 between the recess 22 of the support 9 and the outer face 9a of the support 9 opposite this recess 22.
  • the clamping handle 26 of the screw 25 has an annular surface 26a bearing against the outer face 9a of the support 9.
  • the face 22a of the recess 22 of the support 9 is perpendicular to the table 4 on which the support 9 is fixed and this face 22a is directed towards the electrode holder 15 carried by the plate 4.
  • portion 23 of the tool holder 24 comprising the recess 27 of T cross section is made of electrically insulating material.
  • Figure 9 shows, in addition, that the tool holder 24 comprises a portion 30 having means for fixing the parts to be welded.
  • This portion 30 is traversed by a hole 31 through which the electrode 8 passes, as shown in FIG.
  • the tool holder 24 is placed above the electrode 8 and the support 9 and the recess 27 of T-section is engaged on the projecting portion 28 of the support 9 and the through hole 31 on the electrode 8 and the tool holder 24 is slid down to an end position limited by a stop.
  • the position of the tool holder 24 is then perfectly defined along three perpendicular axes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Welding (AREA)

Abstract

The invention relates to a device for welding together two workpieces, this device being intended to be placed between an upper table and a lower table of a welding machine, characterized in that it comprises an upper block (3) and a lower block (4) connected to each other by guiding columns (5, 6) that lie perpendicular to these two blocks (3, 4), each of these two blocks (3, 4) comprising means for removably fastening it to the upper or lower table of the welding machine and a welding electrode (7, 8) lying perpendicular to the blocks (3, 4) and directed axially towards the electrode borne by the other plate, one of these two plates (3, 4) furthermore comprising a holder (9) that comprises means for removably fastening a clamp (24) to this holder (9) so as to hold the two workpieces to be welded between the two electrodes (7, 8).

Description

DISPOSITIF POUR SOUDER ENSEMBLE DEUX PIECES EN TOLE, POUR DEVICE FOR WELDING TOGETHER TWO PIECE PIECES, FOR
MACHINE A SOUDER MONO-POINT SINGLE POINT SOLDERING MACHINE
La présente invention concerne un dispositif pour souder ensemble deux pièces, ce dispositif étant destiné à être placé entre une table supérieure et une table inférieure d'une machine à souder de type mono-point.  The present invention relates to a device for welding together two parts, this device being intended to be placed between an upper table and a lower table of a single-point type welding machine.
De telles machines à souder sont installées dans les ateliers de ferrage des lignes de production de véhicules automobiles.  Such welding machines are installed in the shoe shops of the production lines of motor vehicles.
Ces machines sont couramment utilisées pour assembler ensemble par une soudure mono-point :  These machines are commonly used to assemble together by a single-point weld:
- une vis et une pièce en tôle d'acier,  - a screw and a piece made of sheet steel,
- un écrou et une pièce en tôle d'acier,  - a nut and a piece made of sheet steel,
- deux pièces en tôle d'acier.  - two pieces of sheet steel.
Pour souder de telles pièces, on équipe chacune des deux tables de la machine à souder d'un support porte électrode, du porte électrode et de son électrode.  To weld such parts, each of the two tables of the welding machine is equipped with an electrode carrier, the electrode holder and its electrode.
Ces supports étant indépendants et fixés directement sur les tables, ils doivent être réglés pour aligner axialement les électrodes montées par l'intermédiaire des portes électrodes sur leurs supports.  These supports being independent and fixed directly on the tables, they must be adjusted to axially align the electrodes mounted via the electrode doors on their supports.
Chacun de ces deux supports est spécifique pour chaque type de pièce à souder car il comporte à cet effet des équipements pour maintenir les pièces à souder.  Each of these two supports is specific for each type of part to be welded because it comprises for this purpose equipment to maintain the parts to be welded.
Ces supports doivent être démontés des tables de la machine à souder en cas de changement de campagne pour libérer la machine et nécessitent à cet effet une zone de stockage importante.  These supports must be removed from the tables of the welding machine in case of change of campaign to release the machine and require for this purpose a large storage area.
A chaque démontage des supports, les tuyaux d'eau de refroidissement des électrodes étant solidaires de ces derniers risquent d'être détériorés lors des manipulations et stockages successifs.  At each disassembly of the supports, the cooling water pipes of the electrodes being integral with the latter may be damaged during successive handling and storage.
On constate également des défauts de qualité et d'aspect des soudures réalisées du fait de l'assemblage en porte-à-faux par rapport à l'axe machine.  There are also defects in quality and appearance of the welds made due to the cantilever assembly relative to the machine axis.
Une machine à souder du type décrit ci-dessus a été décrite notamment dans le brevet US 4 845 333.  A welding machine of the type described above has been described in particular in US Pat. No. 4,845,333.
Le but de la présente invention est de remédier aux inconvénients des process d'assemblage cités ci-dessus. Ce but est atteint, selon l'invention, grâce à un dispositif pour souder ensemble deux pièces, ce dispositif étant destiné à être placé entre une table supérieure et une table inférieure d'une machine à souder, caractérisé en ce qu'il comprend un plateau supérieur et un plateau inférieur reliés entre eux par des colonnes de guidage perpendiculaires à ces deux plateaux, chacun de ces deux plateaux comprenant des moyens pour le fixer de façon amovible à la table supérieure ou inférieure de la machine à souder et une électrode de soudure perpendiculaire aux plateaux et dirigée axialement vers l'électrode portée par l'autre plateau, l'un de ces deux plateaux comportant en outre un support qui comprend des moyens pour fixer à ce support, de façon amovible, un porte-outil pour maintenir les deux pièces à souder entre les deux électrodes. The object of the present invention is to overcome the disadvantages of the assembly processes mentioned above. This object is achieved, according to the invention, by means of a device for welding together two parts, this device being intended to be placed between an upper table and a lower table of a welding machine, characterized in that it comprises a upper plate and a lower plate interconnected by guide columns perpendicular to these two plates, each of these two plates comprising means for removably attaching to the upper or lower table of the welding machine and a welding electrode perpendicular to the plates and directed axially towards the electrode carried by the other plate, one of these two plates further comprising a support which comprises means for fixing to this support, removably, a tool holder to maintain the two pieces to be welded between the two electrodes.
Les deux plateaux du dispositif selon l'invention forment ainsi un ensemble unitaire facile à manipuler et à monter entre les deux tables de la machine à souder.  The two trays of the device according to the invention thus form a unitary assembly that is easy to handle and mount between the two tables of the welding machine.
Les deux plateaux, guidés par les colonnes, maintiennent les deux électrodes axialement l'une par rapport à l'autre, de sorte que ces électrodes ne nécessitent aucun réglage.  The two plates, guided by the columns, hold the two electrodes axially relative to each other, so that these electrodes do not require any adjustment.
De même, le support porte outil fixé à l'un des deux plateaux permet une fixation facile d'un porte outil pour maintenir les deux éléments à souder entre les deux électrodes.  Similarly, the tool holder attached to one of the two trays allows easy attachment of a tool holder to maintain the two elements to be welded between the two electrodes.
De préférence, le plateau comportant ledit support porte outil est le plateau inférieur.  Preferably, the plate comprising said tool holder is the lower plate.
Dans une version avantageuse de l'invention, les deux plateaux comprennent une plaque supportant deux tuyaux destinés à véhiculer un fluide pour refroidir respectivement les deux électrodes pendant chaque opération de soudure.  In an advantageous version of the invention, the two plates comprise a plate supporting two pipes intended to convey a fluid for cooling the two electrodes respectively during each welding operation.
La plaque ci-dessus permet le débranchement des tuyaux destinés au refroidissement des électrodes de façon à demeurer sur la machine à souder et ainsi à réduire les risques de détérioration de ces tuyaux.  The above plate allows the disconnection of the pipes intended for the cooling of the electrodes so as to remain on the welding machine and thus to reduce the risks of deterioration of these pipes.
Dans une version particulièrement avantageuse de l'invention, les électrodes portées par les deux plateaux sont positionnées chacune dans un porte-électrode, l'ensemble électrode et porte-électrode étant réglé et adapté pour réaliser l'une des trois opérations suivantes :  In a particularly advantageous version of the invention, the electrodes carried by the two plates are each positioned in an electrode holder, the electrode and electrode holder assembly being adjusted and adapted to perform one of the following three operations:
- souder une vis à une pièce en tôle, - souder un écrou à une pièce en tôle, - solder a screw to a sheet metal part, - solder a nut to a sheet metal part,
- souder deux pièces en tôle.  - solder two pieces of sheet metal.
Les trois opérations ci-dessus peuvent ainsi être effectuées par trois dispositifs selon l'invention différents l'un de l'autre par des ensembles porte- électrodes et électrodes préréglés et adaptés pour chaque opération.  The above three operations can thus be performed by three devices according to the invention different from each other by electrode holder assemblies and electrodes preset and adapted for each operation.
De préférence également, le porte-outil pour maintenir les éléments à souder entre les deux électrodes est adapté pour maintenir :  Also preferably, the tool holder for holding the elements to be welded between the two electrodes is adapted to maintain:
- soit une vis et une pièce en tôle,  - a screw and a sheet metal part,
- soit un écrou et une pièce en tôle,  - a nut and a sheet metal part,
- soit deux pièces en tôles.  - two pieces of sheet metal.
Cette disposition facilite encore davantage la mise en œuvre du dispositif selon l'invention pour effectuer les opérations de soudure évoquées ci-dessus.  This arrangement further facilitates the implementation of the device according to the invention to perform the welding operations mentioned above.
Dans un mode de réalisation préféré de l'invention, le support porté par l'un des deux plateaux du dispositif selon l'invention comprend un évidement pour recevoir une partie de forme complémentaire dudit porte-outil et des moyens de serrage pour serrer ladite partie du porte-outil contre une face dudit évidement.  In a preferred embodiment of the invention, the support carried by one of the two trays of the device according to the invention comprises a recess for receiving a part of complementary shape of said tool holder and clamping means for clamping said part. of the tool holder against a face of said recess.
Cette disposition facilite la mise en place et la fixation du porte-outil.  This arrangement facilitates the establishment and fixing of the tool holder.
Ces moyens de serrage peuvent comprendre une vis solidaire d'une poignée de serrage destinée à être manœuvrée par l'opérateur.  These clamping means may comprise a screw secured to a clamping handle intended to be maneuvered by the operator.
De préférence, ladite partie de forme complémentaire du porte-outil comprend un évidement de section transversale en T débouchant sur une face dudit porte-outil destinée à être serrée contre ladite face de l'évidement dudit support, ledit évidement de section transversale en T pouvant s'engager par coulissement sur une partie de forme complémentaire faisant saillie sur ladite face de l'évidement du support, sur laquelle est vissée ladite vis, cette vis étant engagée dans un alésage réalisé dans ledit support entre ledit évidement du support et une face de ce support opposée à cet évidement, la poignée de serrage de la vis comportant une surface annulaire en appui contre ladite face du support.  Preferably, said portion of complementary shape of the tool holder comprises a T-shaped cross-section recess opening on a face of said tool holder intended to be clamped against said face of the recess of said support, said T-shaped cross-section recess being able to slidably engaging a portion of complementary shape projecting from said face of the recess of the support, on which said screw is screwed, said screw being engaged in a bore made in said support between said recess of the support and a face of this support opposed to this recess, the tightening handle of the screw having an annular surface bearing against said face of the support.
Ainsi, le porte-outil peut être monté facilement en le faisant coulisser par rapport au support puis en tournant la poignée pour serrer la vis.  Thus, the tool holder can be mounted easily by sliding it relative to the support and then turning the handle to tighten the screw.
De préférence également, ladite face de l'évidement du support est perpendiculaire à la table sur laquelle est fixé ledit support et ladite face est dirigée vers le porte-électrode porté par ledit plateau. Selon une autre particularité avantageuse de l'invention, la partie du porte- outil comprenant l'évidement de section transversale en T est en matière électriquement isolante. Also preferably, said face of the recess of the support is perpendicular to the table on which is fixed said support and said face is directed towards the electrode holder carried by said plate. According to another advantageous feature of the invention, the portion of the tool holder comprising the T-shaped cross-section recess is made of electrically insulating material.
Dans un mode de réalisation également avantageux de l'invention, le porte- outil comprend une partie comportant des moyens de fixation des pièces à souder, cette partie étant traversée par un trou de passage de l'électrode.  In an equally advantageous embodiment of the invention, the tool holder comprises a part comprising fastening means for the parts to be welded, this part being traversed by a through hole of the electrode.
D'autres particularités et avantages de l'invention apparaîtront encore tout au long de la description ci-après.  Other features and advantages of the invention will become apparent throughout the description below.
Aux dessins annexés, donnés à titre d'exemples, non limitatifs :  In the accompanying drawings, given by way of nonlimiting examples:
- la figure 1 est une vue en élévation d'une machine à souder mono-point d'un type connu,  FIG. 1 is an elevational view of a single-point welding machine of a known type,
- la figure 2 est une vue en perspective d'un premier dispositif selon l'invention,  FIG. 2 is a perspective view of a first device according to the invention,
- la figure 3 est une vue analogue à la figure 2 montrant un deuxième dispositif selon l'invention,  FIG. 3 is a view similar to FIG. 2 showing a second device according to the invention,
- la figure 4 est une vue analogue aux figures 2 et 3 montrant un troisième dispositif selon l'invention,  FIG. 4 is a view similar to FIGS. 2 and 3 showing a third device according to the invention,
- la figure 5 montre une pièce en tôle et une vis destinés à être soudés ensemble au moyen du dispositif selon la figure 2,  FIG. 5 shows a sheet metal part and a screw intended to be welded together by means of the device according to FIG. 2,
- la figure 6 montre une pièce en tôle et un écrou destinés à être soudés ensemble au moyen du dispositif selon la figure 3,  FIG. 6 shows a sheet metal part and a nut intended to be welded together by means of the device according to FIG. 3,
- la figure 7 montre deux pièces en tôle destinées à être soudées ensemble au moyen du dispositif selon la figure 4,  FIG. 7 shows two sheet metal parts intended to be welded together by means of the device according to FIG. 4,
- la figure 8 est une vue en perspective du support destiné à la fixation amovible d'un porte-outil,  FIG. 8 is a perspective view of the support intended for the removable attachment of a tool holder,
- la figure 9 est une vue de dessus du support de la figure 8 auquel est fixé le porte-outil,  FIG. 9 is a view from above of the support of FIG. 8 to which the tool holder is attached,
- la figure 10 est une vue latérale de l'ensemble support et porte-outil représenté sur la figure 9.  FIG. 10 is a side view of the support and tool holder assembly shown in FIG. 9.
La figure 1 représente schématiquement une machine à souder mono-point comprenant essentiellement une table supérieure 1 mobile verticalement vers une table inférieure fixe 2. Les figures 2, 3 et 4 représentent chacune un dispositif selon l'invention pour souder ensemble deux pièces grâce à une soudure mono-point. FIG. 1 schematically represents a single-point welding machine essentially comprising an upper table 1 vertically movable towards a fixed lower table 2. Figures 2, 3 and 4 each show a device according to the invention for welding together two parts through a single-point weld.
Chacun des dispositifs ci-dessus est destiné à être placé entre la table supérieure 1 et la table inférieure 2 de la machine à souder, représentée sur la figure 1 .  Each of the above devices is intended to be placed between the upper table 1 and the lower table 2 of the welding machine, shown in FIG.
Les figures 2 à 4 montrent que chaque dispositif comprend un plateau supérieur 3 et un plateau inférieur 4 reliés entre eux par deux colonnes de guidage télescopiques 5, 6 perpendiculaires aux deux plateaux 3, 4.  Figures 2 to 4 show that each device comprises an upper plate 3 and a lower plate 4 interconnected by two telescopic guide columns 5, 6 perpendicular to the two plates 3, 4.
Chacun des deux plateaux 3, 4 comprend des moyens pour la fixer de façon amovible dans une position géométrique précise et répétitive aux tables supérieure 1 ou inférieure 2 de la machine à souder.  Each of the two plates 3, 4 comprises means for detachably fixing it in a precise and repetitive geometric position to the upper or lower tables 1 of the welding machine.
En outre, chaque plateau 3, 4 porte en son centre une électrode de soudure 7, 8 perpendiculaire au plateau 3, 4 et dirigée axialement vers l'électrode 7, 8 portée par l'autre plateau.  In addition, each plate 3, 4 carries at its center a welding electrode 7, 8 perpendicular to the plate 3, 4 and directed axially towards the electrode 7, 8 carried by the other plate.
L'un de ces deux plateaux, à savoir le plateau inférieur 4, comporte en outre un support 9 qui comprend des moyens pour fixer à ce support, de façon amovible, un porte-outil 24 (non représenté sur les figures 2 à 4) pour maintenir les deux pièces à souder entre les deux électrodes 7, 8.  One of these two plates, namely the lower plate 4, further comprises a support 9 which comprises means for removably attaching to this support, a tool holder 24 (not shown in FIGS. 2 to 4) to maintain the two parts to be welded between the two electrodes 7, 8.
Lorsque le dispositif ci-dessus est placé entre les tables 1 et 2 de la machine représentée sur la figure 1 , la table supérieure 1 pousse le plateau 3 vers le plateau 4 fixé sur la table inférieure 2.  When the above device is placed between the tables 1 and 2 of the machine shown in Figure 1, the upper table 1 pushes the plate 3 to the plate 4 fixed on the lower table 2.
Le déplacement du plateau 3 est guidé axialement par rapport au plateau grâce aux deux colonnes 5, 6, de sorte que les deux électrodes 7, 8 se déplacent axialement l'une vers l'autre.  The displacement of the plate 3 is guided axially relative to the plate by means of the two columns 5, 6, so that the two electrodes 7, 8 move axially towards each other.
Les plateaux 3,4 comprennent de plus une plaque 10 portant deux embouts The trays 3,4 further include a plate 10 carrying two end caps
12, 13 de raccordement des tuyaux destinés à véhiculer un fluide pour refroidir respectivement les deux électrodes 7, 8 pendant chaque opération de soudure. 12, 13 connecting the pipes for conveying a fluid for cooling respectively the two electrodes 7, 8 during each welding operation.
Ainsi, ces tuyaux ne risquent pas d'être détériorés lors des manipulations. Les électrodes 7, 8 portées par les deux plateaux 3, 4 sont positionnées chacune dans un porte-électrode 14, 15.  Thus, these pipes are not likely to be damaged during handling. The electrodes 7, 8 carried by the two plates 3, 4 are each positioned in an electrode holder 14, 15.
L'ensemble électrodes 7, 8 et porte-électrodes 14, 15 est préréglé et adapté pour réaliser l'une des trois opérations suivantes :  The electrode assembly 7, 8 and electrode holder 14, 15 is preset and adapted to perform one of the following three operations:
- souder (voir figure 5) une vis 16 à une pièce en tôle 17, - souder (voir figure 6) un écrou 18 à une pièce en tôle 19, soldering (see FIG. 5) a screw 16 to a sheet metal part 17, soldering (see FIG. 6) a nut 18 to a sheet metal part 19,
- souder (voir figure 7) deux pièces en tôle 20, 21 .  - solder (see Figure 7) two sheet metal parts 20, 21.
Le porte-outil, qui sera décrit en détail plus loin, destiné à maintenir les deux pièces à souder entre les deux électrodes 7, 8 est adapté pour maintenir :  The tool holder, which will be described in detail later, intended to hold the two parts to be welded between the two electrodes 7, 8 is adapted to maintain:
- soit la vis 16 et la pièce en tôle 17,  - the screw 16 and the sheet metal part 17,
- soit l'écrou 18 et la pièce en tôle 19,  - the nut 18 and the sheet metal part 19,
- soit les deux pièces en tôles 20, 21 .  - The two sheet metal parts 20, 21.
Ainsi, les trois dispositifs selon l'invention, représentés sur les figures 2 à 4, sont conçus et préréglés spécifiquement pour effectuer les trois opérations de soudure ci-dessus.  Thus, the three devices according to the invention, shown in Figures 2 to 4, are designed and preset specifically to perform the three welding operations above.
Une fois mis en place entre les deux tables 1 , 2 de la machine à souder, ces dispositifs ne nécessitent individuellement aucun réglage ou manipulation complémentaire, mis à part le branchement des tuyaux de refroidissement des électrodes 7, 8.  Once installed between the two tables 1, 2 of the welding machine, these devices do not individually require any adjustment or additional manipulation, apart from the connection of the cooling pipes of the electrodes 7, 8.
Les figures 8 et 9 montrent que le support 9 fixé sur le plateau inférieur 4 comprend un évidement 22 pour recevoir une partie 23 de forme complémentaire du porte-outil 24 et des moyens de serrage pour serrer la partie 23 du porte-outil 24 contre une face plane 22a de l'évidement 22.  Figures 8 and 9 show that the support 9 fixed on the lower plate 4 comprises a recess 22 for receiving a portion 23 of complementary shape of the tool holder 24 and clamping means for clamping the portion 23 of the tool holder 24 against a flat face 22a of the recess 22.
Ces moyens de serrage comprennent une vis 25 solidaire d'une poignée de serrage 26.  These clamping means comprise a screw 25 secured to a clamping handle 26.
Comme on le voit sur la figure 9, la partie 23 de forme complémentaire du porte-outil 24 comprend un évidement 27 de section transversale en T débouchant sur une face 23a du porte-outil 24 destinée à être serrée contre la face 22a de l'évidement 22 du support 9.  As can be seen in FIG. 9, the portion 23 of complementary shape of the tool holder 24 comprises a recess 27 of T-shaped cross-section opening on a face 23a of the tool holder 24 intended to be clamped against the face 22a of the recess 22 of the support 9.
L'évidement 27 de section transversale en T peut s'engager par coulissement sur une partie 28 de forme complémentaire faisant saillie sur la face 22a de l'évidement 22 du support 9.  The recess 27 of cross-section T may slide-engage on a portion 28 of complementary shape projecting on the face 22a of the recess 22 of the support 9.
Sur cette partie 28 est vissée la vis 25.  On this part 28 is screwed the screw 25.
Cette vis 25 est engagée dans un alésage 29 réalisé dans le support 9 entre l'évidement 22 du support 9 et la face extérieure 9a du support 9 opposée à cet évidement 22.  This screw 25 is engaged in a bore 29 made in the support 9 between the recess 22 of the support 9 and the outer face 9a of the support 9 opposite this recess 22.
La poignée de serrage 26 de la vis 25 comporte une surface annulaire 26a en appui contre la face extérieure 9a du support 9. La face 22a de l'évidement 22 du support 9 est perpendiculaire à la table 4 sur laquelle est fixé le support 9 et cette face 22a est dirigée vers le porte- électrode 15 porté par le plateau 4. The clamping handle 26 of the screw 25 has an annular surface 26a bearing against the outer face 9a of the support 9. The face 22a of the recess 22 of the support 9 is perpendicular to the table 4 on which the support 9 is fixed and this face 22a is directed towards the electrode holder 15 carried by the plate 4.
Par ailleurs, la partie 23 du porte-outil 24 comprenant l'évidement 27 de section transversale en T est en matière électriquement isolante.  Furthermore, the portion 23 of the tool holder 24 comprising the recess 27 of T cross section is made of electrically insulating material.
La figure 9 montre, de plus, que le porte-outil 24 comprend une partie 30 comportant des moyens de fixation des pièces à souder.  Figure 9 shows, in addition, that the tool holder 24 comprises a portion 30 having means for fixing the parts to be welded.
Cette partie 30 est traversée par un trou 31 de passage de l'électrode 8, comme montré sur la figure 10.  This portion 30 is traversed by a hole 31 through which the electrode 8 passes, as shown in FIG.
Pour fixer le porte-outil 24 sur le support 9, on procède comme suit.  To fix the tool holder 24 on the support 9, the procedure is as follows.
On place le porte-outil 24 au-dessus de l'électrode 8 et du support 9 et on engage l'évidement 27 de section en T sur la partie saillante 28 du support 9 et le trou de passage 31 sur l'électrode 8 et on fait coulisser le porte-outil 24 vers le bas jusqu'à une position de fin de course limitée par une butée.  The tool holder 24 is placed above the electrode 8 and the support 9 and the recess 27 of T-section is engaged on the projecting portion 28 of the support 9 and the through hole 31 on the electrode 8 and the tool holder 24 is slid down to an end position limited by a stop.
Lors de ce mouvement, l'évidement 27 de la partie 23 du porte-outil 24 coulisse sur la partie complémentaire 28 du support 9 et dans l'évidement 22 de ce support 9.  During this movement, the recess 27 of the part 23 of the tool holder 24 slides on the complementary part 28 of the support 9 and in the recess 22 of this support 9.
Il suffit ensuite de faire tourner la poignée 26 pour visser la vis 25 dans la partie 28 pour serrer la face 23a de la partie 23 du porte-outil 24 sur la face 22a du support 9.  Then simply rotate the handle 26 to screw the screw 25 in the portion 28 to tighten the face 23a of the portion 23 of the tool holder 24 on the face 22a of the support 9.
La position du porte-outil 24 est alors parfaitement définie suivant trois axes perpendiculaires.  The position of the tool holder 24 is then perfectly defined along three perpendicular axes.
La position des pièces à souder sur le porte-outil 24 par rapport aux électrodes 7, 8 est également parfaitement garantie.  The position of the parts to be welded on the tool holder 24 with respect to the electrodes 7, 8 is also perfectly guaranteed.
Les principaux avantages des dispositions que l'on vient de décrire sont les suivants :  The main advantages of the provisions just described are:
- gain de place pour stocker les dispositifs,  - saving space to store the devices,
- gain au niveau de la qualité des soudures,  - gain in the quality of the welds,
- gain de maintenance, compte-tenu de la standardisation des équipements de soudure,  - maintenance gain, given the standardization of welding equipment,
- gain de temps de montage et démontage du porte-outil et de la mise en place du dispositif sur la machine à souder.  - Time saving of assembly and disassembly of the tool holder and the installation of the device on the welding machine.

Claims

REVENDICATIONS
1 . Dispositif pour souder ensemble deux pièces (16, 17 ; 18, 19 ; 20, 21 ), ce dispositif étant destiné à être placé entre une table supérieure (1 ) et une table inférieure (2) d'une machine à souder, caractérisé en ce qu'il comprend un plateau supérieur (3) et un plateau inférieur (4) reliés entre eux par des colonnes de guidage (5, 6) perpendiculaires à ces deux plateaux (3, 4), chacun de ces deux plateaux (3, 4) comprenant des moyens pour le fixer de façon amovible à la table supérieure (1 ) ou inférieure (2) de la machine à souder et une électrode de soudure (7, 8) perpendiculaire aux plateaux (3, 4) et dirigée axialement vers l'électrode portée par l'autre plateau, l'un de ces deux plateaux (3, 4) comportant en outre un support (9) qui comprend des moyens pour fixer à ce support (9), de façon amovible, un porte-outil (24) pour maintenir les deux pièces à souder entre les deux électrodes (7, 8). 1. Device for welding together two parts (16, 17; 18, 19; 20, 21), this device being intended to be placed between an upper table (1) and a lower table (2) of a welding machine, characterized in it comprises an upper plate (3) and a lower plate (4) interconnected by guide columns (5, 6) perpendicular to these two plates (3, 4), each of these two plates (3, 4) comprising means for detachably fixing it to the upper (1) or lower (2) table of the welding machine and a welding electrode (7, 8) perpendicular to the plates (3, 4) and directed axially towards the the electrode carried by the other plate, one of these two plates (3, 4) further comprising a support (9) which comprises means for removably attaching to said support (9) a holder tool (24) for holding the two parts to be welded between the two electrodes (7, 8).
2. Dispositif selon la revendication 1 , caractérisé en ce que le plateau comportant ledit support (9) est le plateau inférieur (4).  2. Device according to claim 1, characterized in that the plate comprising said support (9) is the lower plate (4).
3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que les deux plateaux (3, 4) comprennent une plaque (10) supportant deux tuyaux destinés à véhiculer un fluide pour refroidir respectivement les deux électrodes (7, 8) pendant chaque opération de soudure.  3. Device according to one of claims 1 or 2, characterized in that the two plates (3, 4) comprise a plate (10) supporting two pipes for conveying a fluid for cooling respectively the two electrodes (7, 8). during each welding operation.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les électrodes (7, 8) portées par les deux plateaux (3, 4) sont positionnés chacun dans un porte-électrode (14, 15), l'ensemble électrode (7, 8) et porte-électrode (14, 15) étant réglé et adapté pour réaliser l'une des trois opérations suivantes :  4. Device according to one of claims 1 to 3, characterized in that the electrodes (7, 8) carried by the two plates (3, 4) are each positioned in an electrode holder (14, 15), the electrode assembly (7, 8) and electrode holder (14, 15) being adjusted and adapted to perform one of the following three operations:
- souder une vis (16) à une pièce en tôle (17),  - welding a screw (16) to a sheet metal part (17),
- souder un écrou (18) à une pièce en tôle (19),  - welding a nut (18) to a sheet metal part (19),
- souder deux pièces en tôle (20, 21 ).  - solder two pieces of sheet metal (20, 21).
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le porte-outil (24) pour maintenir les deux pièces à souder entre les deux électrodes (7, 8) est adapté pour maintenir :  5. Device according to one of claims 1 to 4, characterized in that the tool holder (24) for holding the two parts to be welded between the two electrodes (7, 8) is adapted to maintain:
- soit une vis (16) et une pièce en tôle (17),  - a screw (16) and a sheet metal part (17),
- soit un écrou (18) et une pièce en tôle (19),  - a nut (18) and a sheet metal part (19),
- soit deux pièces en tôles (20, 21 ). - two pieces of sheet metal (20, 21).
6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que ledit support (9) comprend un évidement (22) pour recevoir une partie (23) de forme complémentaire dudit porte-outil (24) et des moyens de serrage pour serrer ladite partie (23) du porte-outil (24) contre une face (22a) dudit évidement (22). 6. Device according to one of claims 1 to 5, characterized in that said support (9) comprises a recess (22) for receiving a portion (23) of complementary shape of said tool holder (24) and clamping means for clamping said portion (23) of the tool holder (24) against a face (22a) of said recess (22).
7. Dispositif selon la revendication 6, caractérisé en ce que lesdits moyens de serrage comprennent une vis (25) solidaire d'une poignée de serrage (26).  7. Device according to claim 6, characterized in that said clamping means comprise a screw (25) integral with a clamping handle (26).
8. Dispositif selon la revendication 7, caractérisé en ce que ladite partie (23) de forme complémentaire du porte-outil (24) comprend un évidement (27) de section transversale en T débouchant sur une face (23a) dudit porte-outil (24) destinée à être serrée contre ladite face (22a) de l'évidement dudit support (9), ledit évidement (27) de section transversale en T pouvant s'engager par coulissement sur une partie (28) de forme complémentaire faisant saillie sur ladite face (22a) de l'évidement (22) du support (9), sur laquelle est vissée ladite vis (25), cette vis (25) étant engagée dans un alésage (29) réalisé dans ledit support (9) entre ledit évidement (22) du support (9) et une face (9a) de ce support (9) opposée à cet évidement (22), la poignée de serrage (26) de la vis (25) comportant une surface annulaire (26a) en appui contre ladite face (9a) du support (9).  8. Device according to claim 7, characterized in that said portion (23) of complementary shape of the tool holder (24) comprises a recess (27) of cross section T opening on one face (23a) of said tool holder ( 24) intended to be clamped against said face (22a) of the recess of said support (9), said T-shaped recess (27) being slidably engageable on a complementary shaped portion (28) projecting from said face (22a) of the recess (22) of the support (9), on which is screwed said screw (25), this screw (25) being engaged in a bore (29) formed in said support (9) between said recess (22) of the support (9) and a face (9a) of this support (9) opposite this recess (22), the clamping handle (26) of the screw (25) having an annular surface (26a) in bearing against said face (9a) of the support (9).
9. Dispositif selon la revendication 8, caractérisé en ce que ladite face (22a) de l'évidement (22) du support (9) est perpendiculaire à la table (4) sur laquelle est fixé ledit support (9) et ladite face (22a) est dirigée vers le porte- électrode (15) porté par ledit plateau (4).  9. Device according to claim 8, characterized in that said face (22a) of the recess (22) of the support (9) is perpendicular to the table (4) on which is fixed said support (9) and said face ( 22a) is directed towards the electrode holder (15) carried by said plate (4).
10. Dispositif selon l'une des revendications 8 ou 9, caractérisé en ce que la partie (23) du porte-outil (24) comprenant l'évidement (27) de section transversale en T est en matière électriquement isolante.  10. Device according to one of claims 8 or 9, characterized in that the portion (23) of the tool holder (24) comprising the recess (27) of T cross section is of electrically insulating material.
1 1 . Dispositif selon l'une des revendications 8 à 10, caractérisé en ce que le porte-outil (24) comprend une partie (30) comportant des moyens de fixation des pièces à souder, cette partie (30) étant traversée par un trou (31 ) de passage de l'électrode (8).  1 1. Device according to one of claims 8 to 10, characterized in that the tool holder (24) comprises a portion (30) comprising means for fixing the parts to be welded, this portion (30) being traversed by a hole (31). ) of the electrode (8).
PCT/FR2011/052752 2010-12-23 2011-11-24 Device for welding together two plate workpieces, for a spot welding machine WO2012085374A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1061121 2010-12-23
FR1061121A FR2969519B1 (en) 2010-12-23 2010-12-23 DEVICE FOR WELDING TWO SHEET PIECES FOR SINGLE POINT WELDING MACHINE

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WO2012085374A1 true WO2012085374A1 (en) 2012-06-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845333A (en) * 1987-02-26 1989-07-04 Masato Hidata Welding method and apparatus
EP0823302A1 (en) * 1996-08-07 1998-02-11 Sumitomo Wiring Systems, Ltd. Electrode unit for resistance welding
WO2001045890A1 (en) * 1999-12-20 2001-06-28 Domschot Bryan W Modular welding machine
EP1719571A1 (en) * 2005-05-04 2006-11-08 Conntronic Method and device of resistance pressure welding of workpieces made of multiple parts
DE102009007699A1 (en) * 2009-02-05 2010-08-19 Andreas Clasvogt Butt-welding adapter for a welding press, comprises an upper press connection plate, a lower press connection plate and/or a butt-welding unit for the reception and displacement of profile to be welded during the butt-welding process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845333A (en) * 1987-02-26 1989-07-04 Masato Hidata Welding method and apparatus
EP0823302A1 (en) * 1996-08-07 1998-02-11 Sumitomo Wiring Systems, Ltd. Electrode unit for resistance welding
WO2001045890A1 (en) * 1999-12-20 2001-06-28 Domschot Bryan W Modular welding machine
EP1719571A1 (en) * 2005-05-04 2006-11-08 Conntronic Method and device of resistance pressure welding of workpieces made of multiple parts
DE102009007699A1 (en) * 2009-02-05 2010-08-19 Andreas Clasvogt Butt-welding adapter for a welding press, comprises an upper press connection plate, a lower press connection plate and/or a butt-welding unit for the reception and displacement of profile to be welded during the butt-welding process

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FR2969519A1 (en) 2012-06-29
FR2969519B1 (en) 2012-12-28

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