Title:
METHOD FOR MANUFACTURING PRESS-FORMED ARTICLE AND PRESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/049916
Kind Code:
A1
Abstract:
The purpose of the present invention is to use a more simple die configuration to form a press-formed article having a saddle shape and including a top plate portion, vertical wall portions, and outward facing flange portions formed to extend over longitudinal ends of the top plate portion and the vertical wall portions. When a press-formed article (1) is manufactured from a metal plate (2), the press-formed article (1) including a top plate portion (1A), vertical wall portions (1C) extending continuously from the top plate portion (1A) in a width direction via protruding ridge portions (1B), and outward facing flange portions (1E) extending continuously from longitudinal ends of the top plate portion (1A), longitudinal ends of the protruding ridge portions (1B), and longitudinal ends of the vertical wall portions (1C) via recessed ridge portions (1D), the metal plate (2) is bent at the positions of the protruding ridge portions (1B) with regions corresponding to the outward facing flange portions (1E) open, thus forming an L-shaped cross section, and subsequently the metal plate (2) is bent at the positions of the recessed ridge portions (1D) to form the outward facing flange portions (1E).
Inventors:
TANAKA HIROYUKI (JP)
Application Number:
PCT/JP2021/027336
Publication Date:
March 10, 2022
Filing Date:
July 21, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D5/01; B21D22/26; B21D24/00
Domestic Patent References:
| WO2016194963A1 | 2016-12-08 | |||
| WO2014148618A1 | 2014-09-25 |
Foreign References:
| JPH0523761A | 1993-02-02 | |||
| JP2007029966A | 2007-02-08 | |||
| JP2020148121A | 2020-09-17 | |||
| JP2021047187A | 2021-03-25 |
Attorney, Agent or Firm:
TANAKA Hidetetsu et al. (JP)
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