Title:
PRESS-MOLDING METHOD, BLANK MEMBER OF PLATE-SHAPED MATERIAL, INTERMEDIATE MOLDED ARTICLE, METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE, AND PRESS-MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2020/144995
Kind Code:
A1
Abstract:
A method for manufacturing a press-molded article is proposed for manufacturing a press-molded article having an overhanging portion from a plate-shaped material, said method comprising: a blanking step for punching, from a plate-shaped material, the outer form of an expanded shape of a press-molded article having excess material portions; a first pressing step for bending the excess material portions at straight sides to form an intermediate molded article having bent flange portions; a second pressing step for carrying out press-molding, which includes an overhang processing step for providing an overhanging portion on the intermediate molded article; and a trimming step for trimming the excess material portion. Also provided is an intermediate molded article comprising a blank member having an excess material portion for the purpose of bending at straight sides tangential to or separated from the contour outline of an expanded shape of a press-molded article and bent flange portions wherein the excess material has been bent at straight sides.
Inventors:
KARIYAZAKI YUTA (JP)
SHINMIYA TOYOHISA (JP)
YAMASAKI YUJI (JP)
SHINMIYA TOYOHISA (JP)
YAMASAKI YUJI (JP)
Application Number:
PCT/JP2019/048026
Publication Date:
July 16, 2020
Filing Date:
December 09, 2019
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D19/00; B21D22/00; B21D22/20; B21D22/22; B21D22/26; B21D28/00; B21D53/88
Foreign References:
| JP2013169578A | 2013-09-02 | |||
| JPS547862B2 | 1979-04-10 | |||
| JPH0237248B2 | 1990-08-23 | |||
| JP2009255117A | 2009-11-05 | |||
| JP6176430B1 | 2017-08-09 | |||
| JPH11277155A | 1999-10-12 |
Attorney, Agent or Firm:
GINZA MARONIE P.C. (JP)
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