| 摘要 |
PURPOSE:To obtain the can body having the weld zone that the step difference is comparatively small but virtually in zero and the thickness is nearly equal to the original thickness by squashing with press the overlapped part by forming a can body forming body with the overlap of the end part of a metallic blank and by welding this squashed part with laser beam irradiator. CONSTITUTION:A can body forming body 1 is advanced with the rotation of a roller 6 by forming the end part of the forming body 1 to the overlapping part 3 having the prescribed width by Z bar 22 and guides, fed into a squashing device and by making a squashing part 7 with the squashing of the overlapping part 3 by the inner part roller 5 and outer part roller 6. A weld zone 11 is then formed with the melting and solidification of the squashing part 7 preferably in inert atmosphere by irradiating laser beam 10 with the irradiating gun 17 of the laser beam 10 on the squashing part 7. The weld can body 12 which is forming and formed the weld zone 11 is transferred in the direction A with feeding device 18 and delivered from the device 15. |
