Patent ID: 9505079
Filing Date: 2016-11-29
CPC Classification: B23K

Claim Text:
1. A high capacity aluminum spot welding trans-gun for use by an automated robot comprising: a base; a table pivotably mounted to the base; a vertical articulating arm mounted at a first end to the table and adapted for motion about two axes relative to the base through a central vertical pivot rod and a first horizontal pivot hinge; a horizontal articulating arm mounted at a first end to a second end of the vertical articulating arm and adapted for motion about a second horizontal pivot hinge a distal articulating arm mounted at a first end to a second end of the horizontal articulating arm and adapted for motion about a third horizontal pivot hinge; a welding gun including a pair of opposed electrodes attached to the distal articulating arm; a weld control for controlling the operation of the trans-gun; a transformer mounted inside a junction box on the distal articulating arm for controlling the voltage to the trans-gun having a primary input voltage and secondary output voltage; a liquid-cooled high voltage primary conductor supplying at least 400V that electrically connects the weld control to the transformer primary input, the liquid-cooled high voltage primary conductor having a sealed hose concentrically disposed thereabout substantially along an entire length of the primary conductor and the liquid-cooled high voltage primary conductor being encased in a nonconductive insulative coating, a low voltage secondary conductor that electrically connects the transformer secondary output to the welding gun, and the high voltage primary conductor and the low voltage secondary conductor are electrically coupled to the transformer inside the junction box.