| 摘要 |
PURPOSE:To automatically and surely weld plural plate materials at the same time by moving twin welding torches arranged coaxially in the longitudinal direction of the plate materials and fillet-welding these materials when welding the plural plate materials having notches on panel material. CONSTITUTION:When welding the plural inversed L type plate materials L1 and L2, etc., having notched parts H1 and H2, etc., in the middles on the surface of the flat panel material P, a welding head adjusting slider 7 provided with the twin welding torches T1 and T2 arranged coaxially to point to contact-welding corner parts between the panel material P and the plate materials L on the upper parts of the respective plate materials is lowered to points (a) of one edge of the plate materials L1 and L2 and both sides of contact points between the panel material and the plate materials are subjected to boxing welding. After the contact parts of both sides of the plate materials and the panel material are fillet-welded and both contact points (b) and (c) of the notched parts H1 and H2 are subjected to boxing welding while moving the slider 7 in the longitudinal direction of the plate materials, continuously, the fillet welding is performed up to the other edges (e) and lastly, the edges (e) are subjected to boxing welding. This welding operation is automatically performed at the same time by the plural twin welding torches arranged coaxially and the panel material is welded to the plate materials with excellent working efficiency.
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