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US 7,758,089 B2Granted
Roll forming apparatus, method thereof, and bumper beam manufactured by the method
AssigneeSungwoo Hitech Co., Ltd.
InventorsMun Yong Lee, Jung Su Yoo
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Abstract
A roll forming apparatus and a method thereof form a composite panel by simultaneously roll forming upper and lower plates with different thicknesses and a zigzag-shaped core panel, and welding them together. A bumper beam is manufactured by using the composite panel.
Claims5
A roll forming method, comprising:
- uncoiling a first coil to form a middle plate;
- forming a core panel by bending the middle plate to be a zigzag shape;
- uncoiling upper and lower coils to form upper and lower plates, respectively;
- supplying the upper and lower plates to upper and lower surfaces of the core panel, respectively;
- aligning both sides of the core panel and the upper and lower plates;
- welding the core panel and the upper and lower plates to make a sandwich-type composite panel;
- boring a plurality of holes for assembling a bumper beam in the composite panel;
- and
- bending the composite panel to form the bumper beam.
6 more elements
Dependencies are inferred from the claim text.