FR2641221A1 - Device for automatically extracting welding electrodes - Google Patents

Device for automatically extracting welding electrodes Download PDF

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Publication number
FR2641221A1
FR2641221A1 FR8817471A FR8817471A FR2641221A1 FR 2641221 A1 FR2641221 A1 FR 2641221A1 FR 8817471 A FR8817471 A FR 8817471A FR 8817471 A FR8817471 A FR 8817471A FR 2641221 A1 FR2641221 A1 FR 2641221A1
Authority
FR
France
Prior art keywords
electrode
foils
welding electrodes
welding
extractor
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.)
Pending
Application number
FR8817471A
Other languages
French (fr)
Inventor
Claude Louis
Norbert Halcewicz
Patrick Dussel
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Priority to FR8817471A priority Critical patent/FR2641221A1/en
Publication of FR2641221A1 publication Critical patent/FR2641221A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
    • 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
    • B23K11/3072—Devices for exchanging or removing electrodes or electrode tips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
    • B25B13/5008—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects
    • B25B13/5016—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

According to the invention, this device comprises a cylindrical hollow body 2 into which are axially inserted a multiplicity of equidistant shims 4 whose planes do not pass through the axis of this extractor device, so as to trap an electrode 6 and to transmit a torque. Application: in particular the automatic extraction of welding attachments.

Description

DISPOSITIF POUR L'EXTRACTION AUTOMATIOUE D' ELECTRODES DE
SOUDAGE
La présente invention se raDDorte à un dispositif pour l'extraction automatique d' électrodes de soudage montées sur des pinces à souder.DEVICE FOR THE AUTOMATED EXTRACTION OF ELECTRODES FROM
WELDING
The present invention relates to a device for the automatic extraction of welding electrodes mounted on welding tongs.

L'assemblane des tôles revêtues telles que des tôles électrozinguées et galvanisées a entravé le problème délicat posé par la pollution des faces actives des électrodes de soudage. The assembly of coated sheets such as galvanized and galvanized sheets has hampered the delicate problem posed by pollution of the active faces of the welding electrodes.

Cette pollution crée une résistivité et impose un échange fréquent de ces électrodes après un nombre limité de cycles de soudage.This pollution creates a resistivity and requires frequent exchange of these electrodes after a limited number of welding cycles.

Actuellement, cette opération se fait manuellement et implique un arrêt de la chaîne de montage à chaque échange, pénalisant ainsi de plusieurs minutes, la cadence d1 assemblage.Currently, this operation is done manually and involves stopping the assembly line at each exchange, thereby penalizing the assembly rate by several minutes.

L' invention a pour but de remédier à cette intervention manuelle par un système d1 extraction automatique.The object of the invention is to remedy this manual intervention by an automatic extraction system.

Suivant une particularité essentielle, cet extracteur automatique comPrend un corps creux cylindrique, à l'intérieur duquel sont insérés axialement une multiplicité de clinquants équidistants dont les Plans ne passent pas par 1' axe de ce dispositif extracteur, de manière à pouvoir emprisonner une électrode et transmettre un couple.According to an essential characteristic, this automatic extractor comprises a cylindrical hollow body, inside which are axially inserted a multiplicity of equidistant foils whose planes do not pass through the axis of this extractor device, so as to be able to trap an electrode and transmit a couple.

Suivant une autre particularité, ces clinquants qui enserrent 1t électrode détachent celle-ci de son support par un mouvement de rotation automatique imprimé à ce dispositif.According to another particularity, these foils which enclose the electrode detach it from its support by an automatic rotational movement printed on this device.

il ressort de ces particularités que cette extraction automatique fondée sur un blocage de 1' électrode par des clinquants et une rotation de ceuxci Dour désolidariser celle-ci de son support, procure - un avantage technique certain constitué par la possibilité de travail en
temps masqué sans affecter le cadencement de la chaîne, - et une extrême simplicité qui assure une grande fiabilité et un coût
minimal.it emerges from these particularities that this automatic extraction based on a blocking of the electrode by foils and a rotation of these to detach it from its support, provides - a certain technical advantage constituted by the possibility of working in
hidden time without affecting the timing of the chain, - and extreme simplicity which ensures high reliability and cost
minimal.

I)' autres particularités et avantages de l'invention ressortiront plus clairement de la description qui suit d' un mode de réalisation préféré, donné à titre d'exemple non limitatif, en référence aux dessins annexés dans lesquels - la fieure I représente une vue de face en coupe axiale d1 un dispositif
extracteur conforme à 1' invention, - la figure 2 représente une vue de dessus de ce dispositif extracteur, - et la figure 3 représente une vue schématique d1 un montage de ce
dispositif extracteur sur une pince de soudage.I) 'other particularities and advantages of the invention will emerge more clearly from the following description of a preferred embodiment, given by way of nonlimiting example, with reference to the appended drawings in which - the flower I represents a view front view in axial section of a device
extractor according to the invention, - Figure 2 shows a top view of this extractor device, - and Figure 3 shows a schematic view of an assembly of this
extractor device on a welding clamp.

Comme illustré sur les figures 1 et 2, ce dispositif extracteur comprend un corps creux cylindrique 2 à l'intérieur duquel sont logés axialement plusieurs clinquants 4 équidistants, décalés par rapport à 1' axe de ce corps creux, et susceptibles d' enserrer une électrode 6. Ces clinquants peuvent détacher celle-ci de son support 8 par un mouvement de rotation automatique imprimé au dispositif extracteur. Cette rotation est effectuée au moyen d'une couronne dentée 10, d'un pignon 12 et d'un moteur 14.As illustrated in Figures 1 and 2, this extractor device comprises a cylindrical hollow body 2 inside which are axially housed several foils 4 equidistant, offset with respect to the axis of this hollow body, and capable of enclosing an electrode 6. These foils can detach it from its support 8 by an automatic rotational movement printed on the extractor device. This rotation is carried out by means of a ring gear 10, a pinion 12 and a motor 14.

Un échelon en couple fourni par ce moteur permet de créer 1' effort nécessaire à la désolidarisation de 1' électrode par rapport à un tube-allonge 8 (Figure 3).A torque rung provided by this motor makes it possible to create the force necessary for the separation of the electrode with respect to an extension tube 8 (FIG. 3).

La transmission de puissance ou de choc peut être pneumatique, électrique ou hydraulique.Power or shock transmission can be pneumatic, electric or hydraulic.

L'axe du dispositif extracteur et i' axe théorique passant par les électrodes 6 et 6' non représentée sont amenés coincidants. La fermeture de la pince de soudage 16 insère l'électrode 6 dans les clinquants 4. La rotation du dispositif extracteur libère 1' électrode de son tube-allonge 8.  The axis of the extractor device and the theoretical axis passing through the electrodes 6 and 6 'not shown are brought into coincidence. Closing the welding clamp 16 inserts the electrode 6 into the foils 4. The rotation of the extractor device releases the electrode from its extension tube 8.

La souplesse des clinquants permet ainsi de s' affranchir des défauts de géométrie de la pince et du dispositif extracteur, de leurs tolérances d' usinagP ainsi que des contraintes mécaniques existant entre ces deux éléments. The flexibility of the foils thus makes it possible to overcome the geometry faults of the clamp and the extractor device, their machining tolerances as well as the mechanical stresses existing between these two elements.

Ce dispositif extracteur ultrasimple facilite ainsi I' échange automatique de mises rapportées de soudage pendant le transfert de pièces de tôlerie (opération en temps masqué) sans solliciter le support de pince et en s' affranchissant des dispersions de positionnement entre la pince de soudage et ce dispositif extracteur. This ultra-simple extractor device thus facilitates the automatic exchange of added welds during the transfer of sheet metal parts (operation in masked time) without requesting the clamp support and by avoiding positioning dispersions between the welding clamp and this extractor device.

Claims (3)

REVENDiCATIONs I. Dispositif pour l'extraction automatique d' électrodes de soudage montées sur une pince à souder (1), caractérisé en ce qu'il comprend un corps creux cylindrique (2) à 1' intérieur duquel sont insérés axialement une multiplicité de clinquants équidistants (4) dont les plans ne passent pas par l'axe du dispositif extracteur, de façon à emprisonner une électrode (6) et à transmettre un couple. I. Device for the automatic extraction of welding electrodes mounted on a welding gun (1), characterized in that it comprises a cylindrical hollow body (2) inside which are axially inserted a multiplicity of equidistant foils (4) whose planes do not pass through the axis of the extractor device, so as to trap an electrode (6) and to transmit a torque. 2. Dispositif suivant la revendication 1, caractérisé en ce que les clinquants (4) qui enserrent 1' électrode (6) détachent celle-ci de son support (8) par un mouvement de rotation automatique imprimé à ce dispositif.2. Device according to claim 1, characterized in that the foils (4) which enclose one electrode (6) detach the latter from its support (8) by an automatic rotational movement printed on this device. 3. Dispositif suivant la revendication 2, caractérisé en ce que ce mouvement rotatif est réalisé au moyen d' une couronne dentée (10), d' un pignon (12) et d'un moteur (14). 3. Device according to claim 2, characterized in that this rotary movement is achieved by means of a ring gear (10), a pinion (12) and a motor (14).
FR8817471A 1988-12-30 1988-12-30 Device for automatically extracting welding electrodes Pending FR2641221A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8817471A FR2641221A1 (en) 1988-12-30 1988-12-30 Device for automatically extracting welding electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8817471A FR2641221A1 (en) 1988-12-30 1988-12-30 Device for automatically extracting welding electrodes

Publications (1)

Publication Number Publication Date
FR2641221A1 true FR2641221A1 (en) 1990-07-06

Family

ID=9373612

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8817471A Pending FR2641221A1 (en) 1988-12-30 1988-12-30 Device for automatically extracting welding electrodes

Country Status (1)

Country Link
FR (1) FR2641221A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002094495A1 (en) * 2001-05-18 2002-11-28 Reu-Schweisstechnik Gmbh Point welding electrode cap changing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2038262A (en) * 1934-07-13 1936-04-21 Otto T Bernhardt Insert pipe wrench
US2774270A (en) * 1955-03-07 1956-12-18 Charles A Daniel Pipe wrench
US3709072A (en) * 1971-04-15 1973-01-09 W Rogers Motor driven pipe wrench
DE3323038A1 (en) * 1983-06-25 1985-01-10 Bayerische Motoren Werke AG, 8000 München Apparatus for automatically exchanging the end piece of a welding electrode

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2038262A (en) * 1934-07-13 1936-04-21 Otto T Bernhardt Insert pipe wrench
US2774270A (en) * 1955-03-07 1956-12-18 Charles A Daniel Pipe wrench
US3709072A (en) * 1971-04-15 1973-01-09 W Rogers Motor driven pipe wrench
DE3323038A1 (en) * 1983-06-25 1985-01-10 Bayerische Motoren Werke AG, 8000 München Apparatus for automatically exchanging the end piece of a welding electrode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002094495A1 (en) * 2001-05-18 2002-11-28 Reu-Schweisstechnik Gmbh Point welding electrode cap changing device

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