Title:
PRESS-FORMING MOLD AND PRESS-FORMING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/241025
Kind Code:
A1
Abstract:
A press-forming mold 13 according to the present invention forms a press-formed article 1 having a top plate section 3, which has an uneven side portion 11, in which a protruding side portion 11a protruding outward in the in-plane direction and a recessed side portion 11b recessed inward in the in-plane direction are connected by a connecting side portion 11c, and a flange section 5, which is continuous with the uneven side portion 11 in the top plate section 3, the press-forming mold being provided with an upper mold 15 and lower mold 17, and a lower pad 21 and upper pad 23 which work together with the upper mold 15 and lower mold 17 to clamp a blank 19. During an initial forming period the flange section 5 is formed in the protruding side portion 11a and a twisted section 25 that is continuous with the flange section 5 and twisted toward the recessed side portion 11b is formed, and during a later forming period the target shape can be formed by forming the twisted section 25 on the flange section 5 and forming the flange section 5 on the recessed side portion 11b.
Inventors:
AGEBA RYO (JP)
Application Number:
PCT/JP2021/014848
Publication Date:
December 02, 2021
Filing Date:
April 08, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D24/00; B21D19/08; B21D22/26
Domestic Patent References:
| WO2020026356A1 | 2020-02-06 | |||
| WO2014017436A1 | 2014-01-30 |
Foreign References:
| JPS61222640A | 1986-10-03 | |||
| JPS60210326A | 1985-10-22 | |||
| JPS5976625A | 1984-05-01 | |||
| JP6032374B2 | 2016-11-30 | |||
| JP6032374B2 | 2016-11-30 |
Other References:
See also references of EP 4137245A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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