Automatic stud welding equipment

The automatic stud welding equipment comprises a cushion frame, a welding gun, a cover cylinder and a moving mechanism, a cross beam is fixedly connected to the cushion frame, the cross beam is movably connected with a moving frame, the welding gun is installed on the moving frame through a first telescopic source, the cover cylinder is arranged on the outer ring of the welding gun through an adjusting mechanism, and a plurality of convex teeth are arranged at the bottom of the cover cylinder; the adjusting mechanism can drive the cover cylinder to rotate so that metal chippings can be generated after the protruding teeth make contact with the surface of the workpiece, and the movement mechanism is arranged on the cushion frame and used for bearing the workpiece. According to the method, the outer ring of the boss of the stud is filled with generated chippings, so that the boss, a small amount of surface, making contact with the boss, of a workpiece and the generated metal chippings can be molten by an electr