| 摘要 |
Profiles ( 50 ) are formed in a production line with a cross-section that varies along their length from a plane metal strip ( 10 ) that is unwound from a coil ( 9 ), whereby edge cutters ( 14 ) and a number of roll-forming units ( 17 - 24 ) are used where not only the edge cutters but also the roll-forming units can be displaced individually sideways relative to the strip. The edge cutters ( 14 ) and the roll-forming units ( 17 - 24 ) are individually controlled such that they follow the lines of extent of the side edges ( 51, 52 ) that are cut and the lines of the corners ( 53 - 56 ) that are subsequently formed, and the forming of one corner with a number of roll-forming units is started only after the forming of a corner that lies more closely to the edge of the strip has been completed. The formed profile is bent in a bending station integrated into the line, which bending station comprises rollers ( 35 - 40 ) that can be controlled to roll sections of the profile ( 50 ) to become thinner such that the profile is bent or twisted as it is formed. |
