PURPOSE: To remarkably reduce the welding time by rotating an electrode torch and the welding wire tip via a bearing arranged eccentrically by a prescribed distance from the center in a rotation transmission pipe and carrying out similar operation in the same way by the other torch.
CONSTITUTION: The driving of a motor 3 is transmitted via gears 6a and 6b to rotate the rotation transmission pipes 20. In the rotation transmission pipe 20a, the automatic aligning bearing 7a arranged eccentrically by the prescribed distance from the center is rotated and the electrode torch 1a and the welding wire 2a tip are rotated hereby. The similar operation is carried out in the same way by the other torch 1b. By this method, the welding time can be remarkably reduced.
KOBAYASHI MASAO
MURAYAMA MASATOMO
IKEDA YOSHIHISA
