EP2346638A1 - Dispositif et procédé de soudage par points de deux éléments structuraux plats - Google Patents

Dispositif et procédé de soudage par points de deux éléments structuraux plats

Info

Publication number
EP2346638A1
EP2346638A1 EP09744679A EP09744679A EP2346638A1 EP 2346638 A1 EP2346638 A1 EP 2346638A1 EP 09744679 A EP09744679 A EP 09744679A EP 09744679 A EP09744679 A EP 09744679A EP 2346638 A1 EP2346638 A1 EP 2346638A1
Authority
EP
European Patent Office
Prior art keywords
contact
welding
electrode
clamping
component
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.)
Withdrawn
Application number
EP09744679A
Other languages
German (de)
English (en)
Inventor
Christian Mara
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.)
TMS Transport- und Montagesysteme GmbH
TMS TRANSPORT und MONTAGESYSTEME GmbH
Original Assignee
TMS Transport- und Montagesysteme GmbH
TMS TRANSPORT und MONTAGESYSTEME GmbH
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 TMS Transport- und Montagesysteme GmbH, TMS TRANSPORT und MONTAGESYSTEME GmbH filed Critical TMS Transport- und Montagesysteme GmbH
Publication of EP2346638A1 publication Critical patent/EP2346638A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • B23K37/0435—Clamps
    • 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
    • B23K11/31—Electrode holders and actuating devices therefor
    • 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
    • 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
    • B23K2101/18—Sheet panels

Definitions

  • a spot welding method in which a component to be welded is placed on a support.
  • the support consists of a first electrically conductive layer on which the component rests, and a second electrically conductive layer, which is electrically isolated from the first.
  • the welding transformer is connected to the two electrically conductive layers and the welding voltage is applied.
  • a welding gun is attached to the component and to the second electrically conductive layer, whereby the circuit is closed via the welding gun and the welding point is set.
  • penetration welding or visual impairment of the outside of the component can not be reliably prevented.
  • DE 1 201 125 A or DE 102 27 495 A1 discloses a spot welding method, in which a welding electrode is applied at the desired welding point on the outer sheet bent around the inner sheet, but the second counter electrode is not, as usual in conventional spot welding, opposite to the first welding electrode, but is applied either next to the welding electrode or on the inner plate of the component.
  • the welding current is conducted in the components so that it comes only to a locally very limited welding of the component and in particular on the outside of the component no traces of welding can be seen.
  • the arrangement of the welding electrodes and the arrangement of the component on a support will continue Avoiding pressure points or deformations on the outside of the component.
  • such a welding method has the disadvantage that no conventional spot welding gun can be used and therefore a separate welding tool must be provided for this purpose.
  • JP 59 169 684 A an arrangement for indirect welding is shown in which a contact electrode contacted by a drive unit one component and a first welding electrode of a welding gun on the component to be welded and the other welding electrode acts on a contact element of a support arrangement.
  • Contact electrode and contact element are electrically connected to each other via a cable for welding. This can be welded in this arrangement with a conventional welding gun.
  • a movably arranged contact device is provided with a contact electrode, wherein the contact device by means of a drive unit in and out of a contact position is movable and on the contact means a clamping device is provided with a movable clamping element, wherein the Clamping element with a drive unit in and out of a clamping position is movable and with the clamping element, the contact electrode and a component are pressed against each other and the contact element and the contact electrode are electrically connected together.
  • Fig. 2 is a detail view of the contacting of the component with a contact device
  • Fig. 3 the setting of a spot weld in the spot welding system.
  • the component 6 can be held in position by the holding devices 5, such as, for example, conventional (actuated by means of a hydraulic, pneumatic or electric drive) automatic tensioner.
  • the holding devices 5 are only for positioning, but are usually due to the low clamping forces (again, to avoid possible deformations of the component 6) not suitable, the component 6 against external force, such as by the contact device 4, safely in to fix his position.
  • the holding devices 5 and / or support arrangements 7 can be designed for free adjustability in all three directions in order to enable fine positioning thereof and easy adaptability to different component geometries.
  • Such freely adjustable consoles 8 are well known, for example from EP 1 043 1 16 B1, which is why will not be discussed further here. As shown in detail in Fig.
  • the component 6 is composed of two flat components, an inner panel 21 and an outer panel 20, wherein the outer panel 20 is bent over the edge region of the inner panel 21.
  • the flat components 20, 21 may be glued together at this crimping point 22 in a known manner with an adhesive, which is not yet cured at the time of welding but in the rule.
  • a welding point is now to be set, which connects the inner plate 21 to the outer plate 20, without causing an optical impairment or deformation on the outer plate and without causing penetration through the visible part of the outer plate 20.
  • the support assembly 7 consists of a support element 23, on which the flat components 20, 21 rest and an electrically conductive contact element 24. Between support element 23 and contact element 24, an insulating element 25 is arranged for electrical separation thereof.
  • the support element 23 is preferably made of a material with good thermal conductivity, such as e.g. made of metal, in order to be able to dissipate the heat generated by the welding quickly from the weld. With a suitable choice of material, the support element 23 and the insulating element 25 can also be designed as one part.
  • the support element 23, at least on the support surface also be chrome-plated in order to avoid oxidation of the support element 23 and thus possible impressions on the component 6.
  • the support element 23 is preferably designed as large as possible and with a large material thickness to allow a high and rapid heat transfer.
  • the support element 23 may also be shaped accordingly on the surface facing the component, e.g. contour milled to ensure a rich support of the component 6 on the support member 23. Since high pressure forces (typically 2 to 4.5 kN) are used for spot welding, pressure-related deformations of the component 6 can thus be avoided.
  • a contact device 4 is provided, which is arranged movably in the spot welding system 1.
  • the contact device 4 by means of a drive unit 33, such as an electric, pneumatic or hydraulic actuator, arranged pivotably about a pivot point 34.
  • the contact device 4 can thus be moved into a (as shown in Fig. 2) and from a (as shown in Fig. 2 shown in broken lines) contact position, here by a pivoting movement.
  • a contact electrode 32 is arranged, which contacts the component 6, in this case the inner plate 21, in the pivoted-in contact position.
  • the contact electrode 32 can be designed, for example, as a large-area braided metal strip (such as a copper strip), which is fastened to the holding part 31.
  • on the contact device 4 further comprises a clamping device 35 with a movable Clamping element 36 is arranged. 2, the clamping element 36 is pivotally mounted on the clamping device 35 and can in a clamping position on (as shown in Fig. 2) and swung out (as shown in Fig. 2 by dashed lines) are.
  • the tensioning device 35 also contains a suitable drive unit 37, such as an electric, hydraulic or pneumatic actuator, for moving the tensioning element 36.
  • the tensioning element 36 presses the component 6 or a metal sheet of the component with which For a secure contact required force against the contact electrode 32, whereby the component 6 is contacted electrically safe and with low contact resistance.
  • the tensioning element 36 is preferably arranged opposite the contact electrode 32 in the pivoted-in position.
  • Contact electrode 32 and clamping element 36 can also be adapted in their external shape to the geometry and shape of the component to be contacted, in this case inner panel 21, in order to avoid possible deformations due to clamping.
  • the contact device 4 and the clamping device 35 are conceivable.
  • other movements for example, a linear movement or a superimposition of a linear with a pivoting movement
  • the movable parts of the contact device 4 may be provided or it may be another surface component or be contacted at a different location of a planar component.
  • the inventive principle of contacting remains the same, namely that a contact electrode 32 is placed and the secure contact is ensured by a clamping element 36, which presses the component 6 and the contact electrode 32 together.
  • All live parts that come into contact with the spot welding gun 11 or a component 20, 21, and thus subject to wear, can be arranged interchangeably to allow regular maintenance of the spot welding system 1.
  • a spot welding method thus proceeds as follows. First, the planar components 20, 21 to be welded are placed on the support arrangements 7 (manually or by suitable manipulators) and, if appropriate, held in position by actuation of the holding devices 5. Thereafter, the contact device 4 is moved into the contact position and the clamping element 36 in the clamping position. Then, the spot welding gun 11 is positioned at a weld, so that a first welding electrode 40 on the contact element 24 and the other welding electrode 41 is applied to the weld, whereupon the spot welding gun 1 1 for setting the welding point 30 is activated (current, pressure, time). After the welding has taken place, the spot welding gun 11 is moved, if necessary, to the next welding point, where the process of welding is repeated.
  • spot welding guns 1 1 can be used simultaneously in the spot welding machine 1. As soon as all the welding spots 30 have been set, the spot welding gun 1 1 is moved away, the clamping device 35 and the contact device 4 are moved away from the clamping position or the contact position, if necessary the holding devices 5 are opened and the finished welded component 6 is removed from the device (manually or manually) by suitable manipulators), whereby the process can be repeated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Resistance Welding (AREA)

Abstract

Le but de l'invention est de veiller de manière fiable et répétée à ce que le soudage par points ne nuise pas à l'aspect visuel de la face visible d'un élément structural. A cet effet, l'invention prévoit un dispositif de contact 4 mobile doté d'une électrode de contact 32, ledit dispositif de contact 4 étant déplacé à l'aide d'une unité d'entraînement 33 pour venir prendre ou quitter une position de contact. Le dispositif de contact 4 est également pourvu d'un dispositif de serrage 35 doté d'un élément de serrage 36 mobile, ledit élément de serrage 36 étant déplacé à l'aide d'une unité d'entraînement 37 pour venir prendre ou quitter une position de serrage et permettant de presser l'une contre l'autre l'électrode de contact 32 et l'élément structural 6. L'élément de contact 24 d'une unité d'appui 7 et l'électrode de contact 32 sont électriquement reliées.
EP09744679A 2008-11-20 2009-10-28 Dispositif et procédé de soudage par points de deux éléments structuraux plats Withdrawn EP2346638A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0180608A AT505815B1 (de) 2008-11-20 2008-11-20 Vorrichtung und verfahren zum punktschweissen von zwei flächigen bauteilen
PCT/EP2009/064226 WO2010057751A1 (fr) 2008-11-20 2009-10-28 Dispositif et procédé de soudage par points de deux éléments structuraux plats

Publications (1)

Publication Number Publication Date
EP2346638A1 true EP2346638A1 (fr) 2011-07-27

Family

ID=40549929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09744679A Withdrawn EP2346638A1 (fr) 2008-11-20 2009-10-28 Dispositif et procédé de soudage par points de deux éléments structuraux plats

Country Status (3)

Country Link
EP (1) EP2346638A1 (fr)
AT (1) AT505815B1 (fr)
WO (1) WO2010057751A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20090627A1 (it) * 2009-08-07 2011-02-08 O L C I Engineering S R L Attrezzatura e procedimento per la realizzazione di punti di giunzione saldati mediante saldatura a scarica capacitiva su parti di lamiera
DE102014202600A1 (de) 2014-02-13 2015-08-13 Bayerische Motoren Werke Aktiengesellschaft Punktschweißwerkzeug zum Punktschweißen mit verringerter Flächenpressung und Zwischenelement zur Positionierung zwischen Punktschweißelektrode und Bauteil
CN114012228A (zh) * 2021-11-12 2022-02-08 杨云娣 一种金属圈的自动化焊接设备
CN117020546B (zh) * 2023-10-09 2023-12-12 烟台鑫鹏齿轮有限公司 一种齿轮焊接工装
CN117506139B (zh) * 2024-01-04 2024-03-29 武汉瑞普汽车部件有限公司 一种用于车门内板总成的焊接装置及其方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB479185A (en) * 1936-07-06 1938-02-01 Daimler Benz Ag Improvements relating to electrical welding apparatus
JPS59169684A (ja) * 1983-03-18 1984-09-25 Nissan Motor Co Ltd スポツト溶接装置
JP4943917B2 (ja) * 2007-03-30 2012-05-30 本田技研工業株式会社 溶接装置及び溶接方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010057751A1 *

Also Published As

Publication number Publication date
WO2010057751A1 (fr) 2010-05-27
AT505815A3 (de) 2010-05-15
AT505815A2 (de) 2009-04-15
AT505815B1 (de) 2010-07-15

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