| 摘要 |
PURPOSE:To perform satisfactory welding with high work efficiency by attaching a running rail to both sides of material to be welded, so as to be adjacent to each welding line, running a welding robot on this rail, and executing automatic welding. CONSTITUTION:Welding lines 2a, 2b of two pieces of H-shape steel 1 to be welded to each other are butted, placed on a supporting base 15 and fixed. In the vicinity of these welding lines 2a, 2b, a running rail 10 is attached to the H-shape steel 1, respectively, through a body 4. In this constitution, a weld ing robot 11 is run upward on each running rail 10, a consumable electrode wire 13 is fed automatically to a welding torch 12 through a conduit cable 14, and the welding lines 2a, 2b are welded simultaneously or alternately. In such a way, a large-sized inverting device for inverting a material to be welded becomes unnecessary, an excellent welding is executed stably and efficiently.
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