Apparatus for resistance welding

Details Apparatus for resistance welding Apparatus for resistance welding

1977-04-11

1979-01-16

Schwadron, Martin P.

Electric heating

Metal heating

For bonding with pressure

60547R, 60583, 60593, 91 32, 91448, B23K 928, F15B 1518

Patent

active

041350766

ABSTRACT:
Apparatus and controls are provided for resistance welding one workpiece or body to another. A movable electrode is driven by a cylinder and a piston which are positioned in tandem with a second cylinder and a second piston. The design enables a small pressure applied to the second piston to result in a large force applied by the electrode to the bodies to be welded, with a back-up electrode located on the opposite side of the bodies. Controls for the apparatus enable the force applied by the movable electrode to the bodies to be changed almost instantaneously so that the force applied can be raised and lowered during the actual resistance welding cycle. In some intances, by way of illustration, the pressure is raised while the welding current is on, and, in other instances, the force is decreased and then increased again during the welding cycle.

REFERENCES:
patent: 2825306 (1958-03-01), Buri
patent: 3497660 (1970-02-01), Henry-Biabaud
patent: 3802318 (1974-04-01), Sibbald
patent: 3875365 (1975-04-01), Beneteau

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