Welding device for machining mechanical parts

The utility model discloses a welding device for machining mechanical parts, which comprises a mounting seat, a protective cover is fixed on the top of the mounting seat through bolts, a conveying mechanism is arranged on the inner wall of the mounting seat, and a welding mechanism is arranged in the protective cover. The welding mechanism comprises an adjusting base, an adjusting motor, a lead screw, a moving seat, a limiting column, an electric telescopic rod, a welding base, a laser welding machine, a welding head and a controller, and a waste gas treatment mechanism is arranged at the top of the protective cover. The conveying mechanism is arranged to transport parts, the welding mechanism is arranged, the position of a welding head is adjusted through an adjusting motor and an electric telescopic rod, the welding head is matched with the conveying mechanism to conduct multi-point-position welding operation on the parts, manual operation is replaced, and the automation degree and efficiency of welding ope