Rotative welding gun

A rotating welding gun comprising:

• a welding torch adjustable radially and angularly with respect to a movable block;
• a flat pancake motor for rotating said movable block with respect to a gun body;
• said movable block having an accessible front portion for carrying said welding torch, said front portion being exposed outside said body to face a workpiece to be welded, a rear portion passing through said flat motor and rigidly connected to a rotor of said motor, said rear portion being provided with axially extending electric wires, a cooling fluid inlet and an inlet for a protective gas flow, both of said inlets being coaxial with said electric wires, and an insulating member;
• said body being rigidly connected with a stator of said flat motor, and being provided with a device for measuring rotations, liquid metal or carbon electric contacts, and bearings for centering said movable block;
• said body further comprising a rear protective hood for gas and electric current;
• stationary outlets connected with said wires and inlets of said rear portion.

A rotative welding gun, comprising:

• a welding torch adjustable radially and angularly with respect to a movable block, and rotatively mounted with respect to a gun body;
• a flat pancake motor with an associated tachometer dynamo;
• said movable block having an accessible front portion, carrying said welding torch, and exposed outside said body so as to face a workpiece to be welded, and a rear portion passing through said flat motor and rigidly connected to a rotor member of said motor, said front portion being provided with liquid metal rings for conductive connection with stationary electric supply wires;
• said gun being rigidly connected with a stator member of said motor, and having a device for measuring rotations, centering bearings and a protective hood.