Patent ID: 8336355

Claim:
A roll-forming system comprising: an uncoiler provided at a front portion in a process line and uncoiling a coil; a straightener provided at the rear of the uncoiler in the process line and straightening the coil supplied from the uncoiler to be a flat panel; a blanking press provided at the rear of the straightener in the process line, wherein (a) the blanking press is configured to cut the flat panel into a separated sheet, (b) the blanking press is further configured to form a first cutting groove on a first edge of the separated sheet and a second cutting groove on a second edge of the separated sheet, and (c) the first and second edges of the separated sheet are opposite each other; a brake press provided at the rear of the blanking press in the process line and boring a plurality of holes for assembling a main beam in the separated sheet supplied from the blanking press; a roll former unit provided at the rear of the brake press in the process line for sequentially bending the separated sheet supplied through the blanking press and the brake press in order to form a predetermined-shaped beam, wherein (a) sequentially bending the separated sheet includes bending the separated sheet along a bending line that extends between the first and second edges of the separated sheet and (b) the bending line connects the first and second cutting grooves; a round bender provided at the rear of the roll former unit in the process line and having at least one of curvature-forming rolls bending the shaped beam to have a predetermined curvature; and a punch press disposed at the rear of the round bender and adapted to reduce a thickness of at least a portion of the shaped beam so as to manufacture a bumper beam.