Weld gun control

Details Weld gun control Weld gun control

1987-01-21

1989-04-25

Goldberg, E. A.

Electric heating

Metal heating

For bonding with pressure

219 90, 188314, 188318, B23K 1110

Patent

active

048250317

ABSTRACT:
A weld gun assembly including a support structure; a pair of arm members pivotally mounted intermediate their ends on the support structure on a common pivot axis; a weld tip at one end of each arm member; an air cylinder interconnected between the other ends of the arm members and operative when actuated to move the weld tips together in a closing direction; and a pair of hydraulic cushioning devices extending respectively between the support structure and one arm member and between the support structure and the other arm member. The cushioning devices are selectively adjustable to vary the resistance provided to the movement of each arm member toward its closed position so that the resistance to the closing movement of each arm member may be selectively adjusted in compensation for the unbalanced forces that are acting on the individual arm members and thereby ensure that the weld tips arrive at their welding position adjacent the panels to be welded at the same time.

REFERENCES:
patent: 2035954 (1936-03-01), Focht
patent: 2240644 (1941-05-01), Focht
patent: 4139182 (1979-02-01), Nagase et al.
patent: 4458131 (1984-07-01), Challenger

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