EP0000876B1 - Punktschweissvorrichtung für elektrische Widerstandsschweissung, insbesondere zum Präzisionsschweissen von Kleinbauteilen - Google Patents

Punktschweissvorrichtung für elektrische Widerstandsschweissung, insbesondere zum Präzisionsschweissen von Kleinbauteilen Download PDF

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Publication number
EP0000876B1
EP0000876B1 EP78100557A EP78100557A EP0000876B1 EP 0000876 B1 EP0000876 B1 EP 0000876B1 EP 78100557 A EP78100557 A EP 78100557A EP 78100557 A EP78100557 A EP 78100557A EP 0000876 B1 EP0000876 B1 EP 0000876B1
Authority
EP
European Patent Office
Prior art keywords
electrode
slide
welding
spot
welding device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP78100557A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0000876A1 (de
Inventor
Günter Dederer
Helmut Mürkl
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0000876A1 publication Critical patent/EP0000876A1/de
Application granted granted Critical
Publication of EP0000876B1 publication Critical patent/EP0000876B1/de
Expired legal-status Critical Current

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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
    • B23K11/30—Features relating to electrodes
    • B23K11/31—Electrode holders and actuating devices therefor

Definitions

  • the feed part consists of a piston-cylinder drive, the cylinder of which is fastened to the device carrier and the piston rod of which is supported on the spring generating the pressing force for the welding electrode, which is located in a housing located on the electrode slide.
  • the electrode slide is mounted on the piston rod in a ball bushing. Since the electrode slide can twist in this ball bushing, it is additionally guided in the device carrier. This double guide means that the entire movement system of the electrode slide is overdetermined and requires a sufficient amount of play for a low-friction movement in the guides. As a result, the electrode dodges undefined under the load of the welding force.
  • the electrode can only be inserted centrally from below into the electrode slide and held there by a screw clamp.
  • changing electrodes always requires an axial movement of the electrodes and a correspondingly large stroke of the electrode slide and is therefore time-consuming.
  • the invention is based on the object of designing such a spot welding device for electrical resistance welding in such a way that it is even better suited for precision welding and ensures easier and faster replacement of the electrode while maintaining a holder that is as low in torque as possible.
  • the feed part is designed as a slide, which is guided in the device carrier against rotation by known ball guide rails and in turn carries the electrode slide and leads in ball guide rails, and that the electrode is clamped in the electrode slide by a clamping piece that it is axially and radially interchangeable, and the spring used to apply the electrode force is mounted in the electrode slide.
  • the electrode slide itself is the electrode holder into which the electrode can be inserted radially, the replacement of the electrode is facilitated and accelerated. In addition, a moment on the electrode slide is largely avoided when the electrode is placed on the workpiece.
  • the spring used to apply the electrode force can be preloaded by means of an adjusting pin known per se with the insertion of a ball support bearing against the end of the spring.
  • a ball support bearing By using such a ball support bearing, tensioning of the spring in the torsion direction is avoided.
  • the axial apex edge of the welding electrode can be located outside the clamp holding the electrode on the electrode slide.
  • the invention also makes it possible to arrange welding points next to one another on the workpiece with almost no gaps, by virtue of the fact that one of the two devices is arranged in mirror image relative to the other, in particular the electrode slide and its electrode clamp.
  • a pointer head is attached to the adjustment pin, which is accessible from the outside, it works together with a replaceable scale carrier attached to the feed slide.
  • the electrode slide can have an open bore facing away from the electrode side.
  • the spring is inserted into this hole. The spring is thus easily replaceable or interchangeable with a spring with a different spring characteristic. It is thus easy to change the device from one pressure area to another pressure area.
  • an actuating rod can be arranged in a recess in the feed carriage which is covered by a plate and which can be replaced by removing the cover plate.
  • a rod associated with a pneumatic, hydraulic or manual operating device can therefore be used in this recess.
  • an infeed carriage 2 is mounted so that it can be moved in the direction of arrow 3.
  • the electrode carriage 4 is also guided so that it can roll in the direction of the arrow 3.
  • the electrode slide has a clamping piece 5 for receiving the welding electrode 6.
  • the actuating device 7 consists of a piston cylinder, the piston rod 8 of which is mounted in a recess 10 of the feed slide 2 via a joint 9.
  • a cover plate 11 is connected to the feed carriage by a screw connection, not shown, and covers the recess 10.
  • a shaft screw 13 is guided through the cover plate 11 and carries a nut 15 on its threaded shaft 14 for adjusting the stroke size of the piston rod 8 or the feed carriage.
  • a stop pin 16 inserted in the cover plate 17 of the device carrier 1 serves as an upper limit stop for the electrode slide 4.
  • the feed slide 2 is connected to a pressure tab 2 ′ which carries an adjusting pin 18 designed in the manner of a screw.
  • a ball support bearing 20 is fastened, which bears against a pressure spring 21, which is inserted into a receiving bore 22 of the electrode slide and is supported there against a plate 23.
  • the electrode 6 is moved against a workpiece 24 by means of the feed slide 2.
  • the adjusting pin 18 carries a head 26 which is provided with a measuring mark 25 and which cooperates with a measuring scale 27 connected to the feed slide 2. The desired pressure force can thus be set using the adjusting pin 18.
  • both the electrode slide in the feed slide and the feed slide in the device carrier are supported by means of ball guides 35, 33.
  • the balls run in prismatic grooves 34.
  • the distance traveled by the respective ball cages 32 'or 33' corresponds to only half of this size. Due to the inertia of the ball cages, it can happen that they slip by a small amount. So that the ball cages are each returned to their starting position, the ball guide rails 35 of the electrode slide 4 are provided with a stop plate 36, which - initiated by the stop pin 16 - resets the ball cages during the return stroke.
  • a corresponding stop plate 37 is located on the feed carriage 2.
  • the welding electrode 6 is held in the clamping piece 5 of the electrode slide 4 in such a way that its outer apex edge 38 moves in the lifting plane 39 of the device, but this apex edge is also the outer contour line of the device.
  • FIG. 3 shows two spot welding devices formed according to FIGS. 1 and 2, but which are arranged in mirror image to one another.
  • the two devices are each covered by protective caps 40, 40 '.
  • the two welding devices 41 and 41 ' can be put together so closely that the apex line 38 and 38' of the welding electrode 6 and 6 'almost touch. This makes it possible to place two welding points so close that their welding lines touch or even overlap.
  • the device carrier 1 has a flat contact surface 42 with through bores 43 made therein for fastening the device to an assembly carrier.
  • the power supply to the welding electrode takes place through a relieved welding cable which is fastened to a fastening shoe 45 according to FIG. 1 on the feed slide and from there is guided by a loop to the clamping screw 44 of the electrode slide 4.
  • a high-strength light metal is used as the material for the feed and electrode slide, e.g. Aluminum.
  • the contact parts, preferably the entire electrode slide, are electrochemically plated with a gold layer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Welding (AREA)
EP78100557A 1977-08-29 1978-07-31 Punktschweissvorrichtung für elektrische Widerstandsschweissung, insbesondere zum Präzisionsschweissen von Kleinbauteilen Expired EP0000876B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19772738854 DE2738854A1 (de) 1977-08-29 1977-08-29 Punktschweissvorrichtung fuer elektrische widerstandsschweissung, insbesondere zum praezisionsschweissen von kleinbauteilen
DE2738854 1977-08-29

Publications (2)

Publication Number Publication Date
EP0000876A1 EP0000876A1 (de) 1979-03-07
EP0000876B1 true EP0000876B1 (de) 1982-08-18

Family

ID=6017564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100557A Expired EP0000876B1 (de) 1977-08-29 1978-07-31 Punktschweissvorrichtung für elektrische Widerstandsschweissung, insbesondere zum Präzisionsschweissen von Kleinbauteilen

Country Status (7)

Country Link
US (1) US4229637A (it)
EP (1) EP0000876B1 (it)
JP (1) JPS6057948B2 (it)
BR (1) BR7805588A (it)
CA (1) CA1121468A (it)
DE (1) DE2738854A1 (it)
IT (1) IT1110165B (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3018426A1 (de) * 1980-05-14 1981-11-19 Rossell Electronique S.A., Lausanne Elektrodenkopf
US4504724A (en) * 1980-11-03 1985-03-12 Joyal Products, Inc. Fusing machine
US4453072A (en) * 1981-12-22 1984-06-05 Creative Fastening Methods, Inc. Welding method and apparatus suitable for forming links in jewelry
NL8304167A (nl) * 1983-12-05 1985-07-01 Weld Equip Bv Laskop voor weerstandslassen.
DE3724293A1 (de) * 1987-07-22 1989-02-02 Siemens Ag Punktschweissvorrichtung zum kontaktschweissen mittels widerstandserwaermung
FR2684584B1 (fr) * 1991-12-10 1995-07-07 Merlin Gerin Dispositif de soudage par resistance.
US5174489A (en) * 1992-05-18 1992-12-29 Utica Enterprises, Inc. Electrically-driven cam-actuated tool clamp
DE4219934A1 (de) * 1992-06-17 1993-12-23 Siemens Ag Verfahren und Vorrichtung zum Widerstandsschweißen von hochleitfähigem Blechmaterial
US5266768A (en) * 1992-10-02 1993-11-30 Shepard Mark A Cooling system for multi-tip spot welder
DE4417625C2 (de) * 1994-05-19 1999-05-20 Amatech Gmbh & Co Kg Vorrichtung zur Aufnahme und Führung einer Verbindungseinrichtung
US6653590B1 (en) * 2000-09-07 2003-11-25 Yoshitaka Aoyama Projection bolt welding device
AT500654B1 (de) * 2004-07-09 2007-01-15 Fronius Int Gmbh Einrichtung zum fördern eines schweissdrahts
DE102004059281B3 (de) * 2004-12-09 2006-04-13 Mühlbauer Ag Thermodeneinheit für Halbleiterbauelemente
EP2611563A1 (de) * 2010-10-06 2013-07-10 Siemens Aktiengesellschaft Schweisskopf mit einem eine vorspannung variabel einstellbaren elastischen element
US9162313B2 (en) * 2010-12-23 2015-10-20 Lincoln Global, Inc. Wire feeder wire drive design
US10273050B2 (en) 2013-06-26 2019-04-30 Glenn Gorab Container identification mark
CN107398635A (zh) * 2017-08-03 2017-11-28 深圳市大族锐波传感科技有限公司 一种激光焊接枪头的高度调节装置
CN109729639B (zh) * 2018-12-24 2020-11-20 奥特斯科技(重庆)有限公司 在无芯基板上包括柱体的部件承载件
CN112605516A (zh) * 2020-12-16 2021-04-06 周大孟 一种用于绿色电池制造的电池片点焊装置
CN118218873B (zh) * 2024-04-29 2024-08-13 江苏通流航天科技有限公司 一种腔体管路组件加工的防偏移焊接设备

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2179326A (en) * 1938-07-05 1939-11-07 American Coach & Body Company Welding apparatus
US2286104A (en) * 1940-11-01 1942-06-09 Briggs Mfg Co Welding equipment
US2432750A (en) * 1945-09-07 1947-12-16 Continental Can Co Self-cleaning electrode
US2839665A (en) * 1955-02-28 1958-06-17 Savair Valve & Equipment Compa Pneumatically operated welder head construction
US2810062A (en) * 1956-01-20 1957-10-15 Clyde F Kaunitz Welding apparatus
US2912564A (en) * 1957-11-21 1959-11-10 Fed Machine & Welder Company Resilient lost-motion device for welding apparatus and the like
FR79517E (it) * 1958-10-23 1963-03-29
US3036199A (en) * 1959-07-28 1962-05-22 Pa Co Inc Du Resistance welding head
FR1329747A (fr) * 1962-05-16 1963-06-14 Pince à souder à compensation automatique
US3207884A (en) * 1963-08-14 1965-09-21 Texas Instruments Inc Welding apparatus
US3462578A (en) * 1965-11-15 1969-08-19 Western Electric Co Controlled current welding apparatus and method
DE2112098C3 (de) * 1970-03-13 1979-04-19 Giuseppe Mailand Camardella (Italien) Vorrichtung zum stumpfen Anschweißen von Drahtstücken an Bauteile

Also Published As

Publication number Publication date
IT1110165B (it) 1985-12-23
JPS5446153A (en) 1979-04-11
US4229637A (en) 1980-10-21
IT7827032A0 (it) 1978-08-05
DE2738854A1 (de) 1979-03-22
BR7805588A (pt) 1979-05-08
EP0000876A1 (de) 1979-03-07
CA1121468A (en) 1982-04-06
JPS6057948B2 (ja) 1985-12-17

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