Electric heating – Metal heating – For bonding with pressure
Patent
1992-02-28
1994-01-04
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
219108, B23K 1124
Patent
active
052762963
ABSTRACT:
In a DC type C-shaped welding gun apparatus having a transformer mounted thereon, a center tap of the transformer is communicated to a movable gun arm via an ounce metal plate. A rear end portion of a stationary gun arm is pressingly held between a pair of terminal plates via rectifiers. Both terminal plates are disposed such that their center line is offset to one widthwise side of the transformer. The stationary gun arm is thus disposed to one widthwise side of a projected area of the transformer. The ounce metal plate for supplying electric power to the movable gun arm is disposed to the other side of the projected area. In an X-shaped welding gun apparatus, a first gun arm is rotatably supported by a supporting shaft provided on a gun bracket. A second gun arm is directly connected to one of feeder terminals of a transformer to constitute the second gun arm and the transformer into a unit. This unit is rotatably supported by the supporting shaft via a supporting arm, and the other of the feeder terminals is connected to the first gun arm via the supporting arm. The supporting arm is used as a feeder member. The feeder member can thus be disposed within the width of the gun bracket. A pressurizing cylinder is supported on the supporting arm along the transformer. The vacant space around the transformer is utilized as a space for disposing the cylinder to thereby minimize the size of the welding gun.
REFERENCES:
patent: 3820437 (1974-06-01), Dyer et al.
patent: 4485289 (1984-11-01), Schwartz
patent: 4559438 (1985-12-01), Nakadate et al.
patent: 4842456 (1989-06-01), Saito
patent: 5023423 (1991-06-01), Tsujii et al.
patent: 5053599 (1991-10-01), Tsujii et al.
patent: 5077458 (1991-12-01), Takano et al.
Kawada Masaki
Ohtaki Keizaburo
Honda Giken Kogyo Kabushiki Kaisha
Shaw Clifford C.
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