Multiple spot resistance welding machine for welding wire grids

Details Multiple spot resistance welding machine for welding wire grids Multiple spot resistance welding machine for welding wire grids

1993-10-01

1995-05-16

Evans, Geoffrey S.

Electric heating

Metal heating

Wire, rod, or bar bonding

219108, 219116, B23K 1124, B23K 1111

Patent

active

054162882

ABSTRACT:
A multiple spot resistance welding machine for the welding of wire grids by direct current comprises several contact electrodes (4.1.1, 4.2.1, 4.1.2, 4.2.2, . . . ) contacting a respectively associated grid point from both sides. The switching arrangement for the simultaneous application of welding current to all contacted grid points exhibits, for each contact electrode pair (4.1.1/4.2.1, . . . , 4.1.5/4.2.5), a welding transformer. Juxtaposed welding electrode pairs are floating with respect to potential in accordance with this invention so that the sole transverse connection is constituted by the transverse wire (1). A separate contact electrode pair is provided for each grid point.

REFERENCES:
patent: 3139504 (1964-06-01), Ramstein et al.
patent: 3725632 (1973-04-01), Ritter et al.
patent: 5072090 (1991-12-01), Morita
Patent Abstract of Japan Published May 2, 1986, vol. 10, No. 118 of Japan 60-247482 Dec. 1985.

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