roll forming machine and method for roll forming a hat-shaped profile

摘要

ROLL CONFORMATION MACHINE AND ROLL CONFORMATION METHOD OF A HAT CONFIGURED PROFILE. The present invention relates to a beam with a hat-shaped profile with a cross-section varying along its length which is successively formed from a flat blade metal strip using a roll forming machine with a number of stations. of conformation. The forming stations (11, 12) have a pair of locking rollers (21, 22; 23, 24) for each side flange (16, 17) and support rollers (25, 26) for the central flange (13). . The pairs of locking rollers (21, 22; 23, 24) at forming stations (11, 12) may be moved both horizontally and vertically during a forming operation, and the support rollers (25, 26) may be shifted vertically and they can be shifted individually in one direction laterally. All four corners (27 - 30) of the hat-shaped beam are shaped at the same time whereby the corners (27 - 30) are bent over the peripheral edges of the locking rollers (21, 22; 23, 24). and the support rollers (25, 26). Not only the geometric axes of the locking roller pairs (21, 22; 23, 24), but also the support rollers (25, 26) can be rotated to suit the corners (27 - 30) that are being formed.