Rotary welding of electrical contacts in a progressive die

Details Rotary welding of electrical contacts in a progressive die Rotary welding of electrical contacts in a progressive die

1983-11-28

1986-03-11

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 5622, B23K 1106

Patent

active

045756074

ABSTRACT:
In the manufacture of electrical spring contacts each having a gold-plated contact element welded thereto, a method of providing such a contact element by welding a gold-plated surface strip to a body strip with a pair of welding electrodes in the form of rollers located between the punch and die pad bolsters of a progressive die to effect one or more welds between the strips during the interval the punch pad bolster is in its return stroke mode whereby the subsequent punching out of the finished contacts can be done without disturbing the welds and each such welded part of the surface strip constitutes the gold-plated contact element.

REFERENCES:
patent: 3475816 (1969-11-01), Willoughby
patent: 4099043 (1978-07-01), Rozmus
patent: 4319708 (1982-03-01), Lomerson

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