EP0161487A2 - Procédé pour le soudage automatique par résistance de plaques porte-contact électrique sur une bande porteuse et produits semi-finis pour la fabrication de contacts en matériau dur et fragile pour le soudage sur une bande porteuse - Google Patents

Procédé pour le soudage automatique par résistance de plaques porte-contact électrique sur une bande porteuse et produits semi-finis pour la fabrication de contacts en matériau dur et fragile pour le soudage sur une bande porteuse Download PDF

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Publication number
EP0161487A2
EP0161487A2 EP85104358A EP85104358A EP0161487A2 EP 0161487 A2 EP0161487 A2 EP 0161487A2 EP 85104358 A EP85104358 A EP 85104358A EP 85104358 A EP85104358 A EP 85104358A EP 0161487 A2 EP0161487 A2 EP 0161487A2
Authority
EP
European Patent Office
Prior art keywords
contact
contact material
slots
welding
hard
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Withdrawn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
EP85104358A
Other languages
German (de)
English (en)
Other versions
EP0161487A3 (fr
Inventor
Heinz Koch
Herbert Tybussek
Heinrich Wolf
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.)
WC Heraus GmbH and Co KG
Original Assignee
WC Heraus GmbH and Co KG
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 WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Publication of EP0161487A2 publication Critical patent/EP0161487A2/fr
Publication of EP0161487A3 publication Critical patent/EP0161487A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H11/043—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by resistance welding

Definitions

  • the invention relates to a method for the automatic resistance welding of metal plates forming electrical contacts according to the preamble of claim 1 and a semi-finished product for the production of contacts welded onto a carrier tape, which is particularly suitable for the automated production of welded contacts, according to the preamble of claim 5 .
  • a machine for automatic resistance welding of electrical Kon + ak + e biloand metal plates to predetermined locations on a carrier tape is known from DE-PS 26 42 040. This is a high-performance machine with which up to 600 welds per minute can be carried out. Such machines, which have proven themselves in practice, could practically be run with a work cycle sequence that reaches the limit of the possible welding frequency. So far, such automats have made contact plates made of soft and non-brittle contact materials based on precious or non-precious metals, which can easily be separated from a corresponding band or stamp
  • the present invention is based on the object of specifying a method for the automated welding of hard and brittle contact materials, such as molybdenum and in particular tungsten or their alloys with a high proportion of their own, onto a carrier tape, as well as a semi-finished product made of such contact materials which is suitable for automated welding.
  • hard and brittle contact materials such as molybdenum and in particular tungsten or their alloys with a high proportion of their own
  • Tungsten is a very hard and brittle contact material that has the highest melting point of all contact materials and has the highest electrical wear resistance. It is manufactured using a metallurgical process. Since then, individually manufactured tungsten contact plates have been riveted onto a carrier tape or screwed onto a base. Such contacts are used for interrupter contacts with a high switching frequency and highest erosion resistance, and as pre-contacts.
  • Molybdenum has similar properties to tungsten, but is less hard and brittle and is therefore somewhat easier to process than tungsten.
  • the individual contact plates to be welded onto the carrier strip can be separated with a separating stamp through the slots provided at the spacing of the contact dimension on the tungsten top opposite the welding side. without this separation process leading to cracks and other damage in the tungsten contact plate.
  • the slots are advantageously made at a depth corresponding to one third of the thickness of the contact material layer or a semi-finished product is provided with a corresponding slot depth, a slot depth of two thirds of the thickness of the contact material layer having proven particularly advantageous.
  • the contact material strips or rods should expediently be slotted with a slot width of approximately 0.1 mm.
  • the device shown in FIG. 1 for automatic resistance welding of metal plates forming electrical contacts to predetermined locations on a carrier tape has a welding device 1 with a table 2.
  • the welding device 1 is supplied with a carrier tape 4 stored on a reel 3 and with contact material 6 stored in the form of a tape on a further reel 5.
  • the individual contact plates are separated from the contact material 6 by a separating stamp (not shown) and over the working drum 7 to the carrier tape 4, where they are then welded by means of electrodes 8.
  • the carrier tape 4 with the contact plates 9 welded thereon is stored on a third reel 10.
  • the contact material 6 fed to the welding device 1 is a tungsten strip or stored tungsten rods with a thin solder layer 11 on its welding side, as can be seen from FIG. 2.
  • This tungsten strip or these tungsten rods which have already been provided with slots at a distance corresponding to the desired contact lengths 14 in a separate working step, are in a separating device 12, which is arranged in the welding device 1 in front of the working drum 7, severed.
  • the contact width 15 is determined by the width of the tungsten strip or rod designated by the reference number 16 in FIG.
  • the slots 13, which have a width (reference number 17) of 0.1 mm, can be made in a slot device by means of a saw blade or also by a laser.
  • the slots 13 are designed in such a way that webs 18 made of the tungsten contact material remain between the individual contact plates 9.
  • the individual contact plates can be easily separated or broken off in the welding device 1 by the separating stamp in that the slots 12 are provided, without the contact plate itself being damaged by tearing of the hard and brittle contact material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Switches (AREA)
  • Resistance Welding (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
EP85104358A 1984-05-12 1985-04-10 Procédé pour le soudage automatique par résistance de plaques porte-contact électrique sur une bande porteuse et produits semi-finis pour la fabrication de contacts en matériau dur et fragile pour le soudage sur une bande porteuse Withdrawn EP0161487A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3417762 1984-05-12
DE19843417762 DE3417762A1 (de) 1984-05-12 1984-05-12 Verfahren zum automatischen widerstandsschweissen von elektrischen kontaktplaettchen auf ein traegerbund und halbzeug fuer die herstellung von auf ein traegerband aufzuschweissenden kontakten aus harten und sproeden kontaktwerkstoffen

Publications (2)

Publication Number Publication Date
EP0161487A2 true EP0161487A2 (fr) 1985-11-21
EP0161487A3 EP0161487A3 (fr) 1986-10-08

Family

ID=6235740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104358A Withdrawn EP0161487A3 (fr) 1984-05-12 1985-04-10 Procédé pour le soudage automatique par résistance de plaques porte-contact électrique sur une bande porteuse et produits semi-finis pour la fabrication de contacts en matériau dur et fragile pour le soudage sur une bande porteuse

Country Status (3)

Country Link
EP (1) EP0161487A3 (fr)
JP (1) JPS60250518A (fr)
DE (1) DE3417762A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806782A2 (fr) * 1996-05-06 1997-11-12 DODUCO GmbH Procédé de jonction d'une feuille de brasage avec des plaquettes à contact pour interrupteurs électriques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1281766C (fr) * 1985-12-19 1991-03-19 Martin E. Muzeroll Methode et appareil de positionnement de culots de lampes a halogenure de metal
DE4317950A1 (de) * 1993-05-28 1994-12-01 Siemens Ag Beschichtetes Metallband als Halbzeug für elektrische Kontaktstücke und Verfahren zum Aufbringen derartiger Kontaktstücke auf einen Träger
DE19741930A1 (de) * 1997-09-23 1999-04-08 Siemens Ag Kontaktprofilband und Verfahren zu dessen Weiterverarbeitung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1748938A (en) * 1928-06-27 1930-03-04 Fansteel Prod Co Inc Means for soldering contact points
US2477894A (en) * 1948-04-23 1949-08-02 Albert F Pityo Method of and apparatus for forming and welding contacts
DD97365A1 (fr) * 1972-07-03 1973-05-14
DE2642040B2 (de) * 1976-09-18 1978-07-06 W.C. Heraeus Gmbh, 6450 Hanau Maschine zum automatischen Widerstandsschweißen von elektrische Kontakte bildenden Metallplättchen auf vorbestimmte Stellen eines Trägerbandes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123627A (en) * 1980-03-03 1981-09-28 Tetsuo Takano Method of manufacturing electric contact
JPS5893568A (ja) * 1981-11-30 1983-06-03 Matsushita Electric Works Ltd 接点のスポツト溶接方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1748938A (en) * 1928-06-27 1930-03-04 Fansteel Prod Co Inc Means for soldering contact points
US2477894A (en) * 1948-04-23 1949-08-02 Albert F Pityo Method of and apparatus for forming and welding contacts
DD97365A1 (fr) * 1972-07-03 1973-05-14
DE2642040B2 (de) * 1976-09-18 1978-07-06 W.C. Heraeus Gmbh, 6450 Hanau Maschine zum automatischen Widerstandsschweißen von elektrische Kontakte bildenden Metallplättchen auf vorbestimmte Stellen eines Trägerbandes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806782A2 (fr) * 1996-05-06 1997-11-12 DODUCO GmbH Procédé de jonction d'une feuille de brasage avec des plaquettes à contact pour interrupteurs électriques
EP0806782A3 (fr) * 1996-05-06 1999-06-02 DODUCO GmbH Procédé de jonction d'une feuille de brasage avec des plaquettes à contact pour interrupteurs électriques

Also Published As

Publication number Publication date
JPS60250518A (ja) 1985-12-11
DE3417762A1 (de) 1985-11-28
DE3417762C2 (fr) 1987-09-24
EP0161487A3 (fr) 1986-10-08

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Inventor name: WOLF, HEINRICH

Inventor name: KOCH, HEINZ

Inventor name: TYBUSSEK, HERBERT