| 摘要 |
PROBLEM TO BE SOLVED: To butt each other without clearance so as to surely weld by transferring adjacent plural beltlike steel plates in different transfer angles in parallel, converging both steel plates to the same plane while guiding a non-welding side of a steel plate of one side and continuously butting a welding side of other steel plate to a welding side of one of a steel plate. SOLUTION: Beltlike steel plates 11, 12 are gradually approached from a state apart up/down by transfer devices (roll) 9a-9f. In the beltlike steel plates 11, 12, the non-welding sides are respectively guided by a longitudinal roller type first guide device 12 and a second guide device 14, and the side ends of beltlike steel plates 11, 12 are butted in the same plane. Butted parts are restricted by a pass restriction device 10 to prevent position deviation, deformation and are continuously welded by a laser beam welding machine 3. It is preferable to weld by following and/or weaving a welding torch of the laser beam machine 3. |
