| 摘要 |
PURPOSE: To continuously weld adjacently moving strips or sheets by constituting a pair of tension rollers, which is provided in both sides of the strips or sheets, of hollow shafts and roller shells and making laser beams to pass between the hollow shafts and the roller shellers. CONSTITUTION: A pair of tension rollers 3, 4 is provided in both sides of the strips or sheets 1, 2 in the carrying direction of the adjacent strips or sheets 1, 2. The tension rollers 3, 4 are constituted of the hollow shafts 8, 9, 10, and the roller shells 11, 12, 13, 14 which are mutually arranged on these at an interval in the axial direction. Next, welding heads of laser beam welding equipments 19, 20, 30, 31 are provided in the inside of the hollow shafts 9, 10 of at least one tension roller 3. And the strips or sheets are welded by making the laser beams 25 pass through a gap 18a between the roller shells 13, 14 and an opening 18b within the hollow shafts 9, 10. |
