Opening-degree detecting apparatus for welding gun

Details Opening-degree detecting apparatus for welding gun Opening-degree detecting apparatus for welding gun

1989-03-20

1990-11-13

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219110, B23K 1125

Patent

active

049703617

ABSTRACT:
A displacement detector is attached to the pressure cylinder which operates scissored gun arms to open and close the welding gun instead of being attached directly to the arms and measures displacement of the piston rod. An optical distance sensor mounted on the front cover of the cylindr is disposed to face the piston and determine the distance thereto. Alternatively, a linear moving type potentiometer can be mounted outside the cylinder having its slider connected to the piston rod.

REFERENCES:
patent: 3417221 (1968-12-01), Hayward
patent: 4317980 (1982-03-01), Goodrich et al.
patent: 4841113 (1989-06-01), Hamada et al.

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