Patent ID: 7067760

Claim:
Spot welding gun, comprising: a support, a lower half-gun and an upper half-gun articulated one to the other by a pin, mounted in an oscillating configuration with respect to said support and propping up corresponding welding arms, a working cylinder including a body and a stem moving with respect to the body so as to control a reciprocal movement between the upper half-gun and the lower half-gun, and a balancing cylinder having a body articulated to the support and a stem articulated to a pin extending on the extensions of the actuating forks; the support has a main plate from which extends two parallel support sides with a first articulation axis around which the lower half-gun and the upper half-gun are articulated, the lower half-gun comprises two actuating forks to which the body of said working cylinder is articulated around a second articulation axis parallel to the first articulation axis, the stem of the working cylinder has an end articulated to the upper half-gun around a third articulation axis parallel to said first articulation axis; and the actuating forks have extensions extending above the second articulation axis.