| 摘要 |
A roll-forming machine for producing tapered sheet includes in line a device (11) for unwinding a metal strip from a strip-carrying reel (12), a cutter (18) for cutting the strip transversely, and a forming section (30). The forming section (30) comprises two opposite carriers (31,32) forming a sheet path between them and a row of pairs of motor driven rolls (67,68; 69,70) are mounted on each said carrier (31,32) for clamping the unwound sheet and transporting it through the forming section while successively forming a respective side edge of said sheet. The angle of each said carrier relative to the centre line of the forming section is adjustable and the angular setting is lockable. During operation, each carrier is power moved sideways towards or away from the centre line of the forming section with its angular setting locked and the edges are cut by edge cutters (58,59) before being formed. The invention also relates to a method of producing tapered metal sheets. |
