Rotary weld gun support with electrical coupling

Details Rotary weld gun support with electrical coupling Rotary weld gun support with electrical coupling

1983-03-09

1985-02-19

Envall, Jr., Roy N.

Electric heating

Metal heating

For bonding with pressure

219 861, 219 8625, 901 42, B23K 1110

Patent

active

045007691

ABSTRACT:
In a resistance welding device wherein the welding gun is carried by a robot for rotation about a robot axis, an electrical slip ring assembly for carrying weld current to the weld gun also supports the rotary weld gun. Axially stacked collector discs insulated from one another are electrically and mechanically connected to separate bus members for connection to the weld gun and a pair of adapter plates for connecting the assembly to the rotary drive of a robot and to a weld gun respectively are all bolted together into a unitary rotary arbor assembly. Each collector disc presents a cylindrical outer surface and a nonrotating supply ring surrounds each disc and is connected to one terminal of a power supply. The supply rings are expansible and a fluid actuator operates each supply ring to clamp it tightly to its corresponding collector disc for good electrical connection and to release the ring from the collector disc to allow rotation of the arbor assembly.

REFERENCES:
patent: 1665067 (1928-03-01), Meadowcroft
patent: 2359351 (1944-10-01), Bruno
patent: 4348575 (1982-09-01), Hedren et al.

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