US 12,011,756 B2
Method for manufacturing press-molded article
Kazuki Sakamoto, Kobe (JP); Kenichi Watanabe, Kobe (JP); and Dongyong Shi, Kobe (JP)
Assigned to KOBE STEEL, LTD., Hyogo (JP)
Appl. No. 17/053,423
Filed by KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), Hyogo (JP)
PCT Filed May 13, 2019, PCT No. PCT/JP2019/018848
§ 371(c)(1), (2) Date Nov. 6, 2020,
PCT Pub. No. WO2020/003767, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 2018-121198 (JP), filed on Jun. 26, 2018.
Prior Publication US 2021/0229156 A1, Jul. 29, 2021
Int. Cl. B21D 37/08 (2006.01); B21D 5/01 (2006.01); B21D 22/26 (2006.01); B21D 24/10 (2006.01); B62D 25/04 (2006.01)
CPC B21D 37/08 (2013.01) [B21D 5/01 (2013.01); B21D 22/26 (2013.01); B21D 24/10 (2013.01); B62D 25/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for manufacturing a press-molded article, the method comprising:
preparing a patchwork blank in which a multi-layer thickened portion is formed by layering a main surface of a plate-shaped patchwork on a main surface of a plate-shaped basework and welding the patchwork to the basework;
bending only the thickened portion of the patchwork blank using a press molding apparatus including a first mechanism configured to bend only the thickened portion; and
bending a portion other than the thickened portion in a step different from bending of the thickened portion using a second mechanism different than the first mechanism;
wherein the first mechanism is driven in a first direction to apply a press load in the first direction to the thickened portion, and
wherein the second mechanism is driven to apply a press load in a direction inclined from the first direction to the portion other than the thickened portion.