WELDING DEVICE

PURPOSE:To provide a welding device which exhibits good shielding effect and forms good weld beads by constituting shielding gas injection nozzles directing their leading end opening parts to near the position of the welding point of a welding torch and the welding torch adjustably of position relative with each other. CONSTITUTION:After the operator fixes the cylindrical work W coaxially onto a table 2, he operates handles 11, 14 to match the position P at the weld point of a torch T to the weld line WL of the work W. Further, he operates handles 21, 24 to locate shielding gas injection nozzles A, B in the positions where shielding effect is best. Thence, an electric motor 5 is driven to rotate the torch T and the nozzles A, B one turn clockwise at a constant speed, whereby the line WL is welded. If weaving welding is desired at this time, it can be performed by driving an electric motor 17 as well thereby oscillating the torch T around a shaft 16.