DEVICE FOR WELDING ROD MATERIAL

PURPOSE: To execute a fillet welding having a high precision and prevent the lowering of the working efficiency without requiring to stop the driving of the whole welding heads even in the case of troubling anyone of the welding heads by adjusting a welding torch according to the change of the position of welding part in each rod material and surely following. CONSTITUTION: At the time of supplying electric power from an electric source device 37, travelling rollers in each travelling carriage are driven to travel the travelling carriage and also, a head body 7 is synchronously travelled while keeping a specific distance with a placer 5 by guiding with guide rollers, and the welding part is welded with the welding torch. A profiling sensor follows near the welding part preceding to the welding torch and a shifting device is driven to shift the welding torch according to the profiling signal from the profiling sensor and the welding torch is welded while tracing the welding part.