| 摘要 |
Edge cutting devices (14, 15) and roller forming units (19) are controlled individually so that they follow the band side edges to be cut and the profile corners formed by the edge cutting. Forming of the corner using the roller forming units is only started once a corner closer to the band edge has already been formed. A production line process for forming profiles with a cross-section which varies over the profile length from a band of flat sheet metal (10) which has been unwound from a roll (9) comprises the use of edge cutting devices and roller forming units. Both the edge cutting devices and the roller forming units can be moved individually in the sideways direction relative to the metal band. The edge cutting devices and roller forming units are controlled individually so that they follow the band side edges to be cut and the corners formed by the edge cutting. Forming of the corner using the roller forming units is only started once a corner closer to the band edge has already been formed. An independent claim is also included for the production line, comprising an unwinding device (11), a band guiding device, a punch (13) for clipping the band in the cross-direction, an edge cutting device and roller forming units. A bending device located after the roller forming units comprises rollers which can be controlled so that they roll parts of the profile flat in order to reduce their thickness, which causes the profile to bend or warp, after which it is formed. |
