Title:
BLANK MATERIAL, METHOD FOR PRESS MOLDING BLANK MATERIAL, AND PRESS MOLDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/138684
Kind Code:
A1
Abstract:
A molding recessed part (58) of a lower mold (48) constituting a press molding device (10) is provided with a first blank holder (52), and a circular second blank holder (54) is freely movably provided on one outer peripheral side of the first blank holder (52). Meanwhile, of first and second blank holes (32, 34) opened in blank material (14), straight-line parts (40a, 40b) of the second blank hole (34) have formed therein a pair of tensile force adjusting parts (42a, 42b), and arched parts (44a, 44b) of first and second opening parts (36, 38) are mounted on the second blank holder (54). Furthermore, when draw forming of the blank material (14) is performed, the tensile force imparted to the straight-line parts (40a, 40b) to the outside is adjusted by the tensile force adjusting parts (42a, 42b), and the tensile force imparted to the arched parts (44a, 44b) to the outside in the radial direction is adjusted by the second blank holder (54).
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Inventors:
MAEDA SHINGO (JP)
ISHIHARA YOSHIMITSU (JP)
ITO YASUHIRO (JP)
NEMOTO NAOYA (JP)
KANO TAKAYUKI (JP)
KAGEYAMA NAOSUKE (JP)
ISHIHARA YOSHIMITSU (JP)
ITO YASUHIRO (JP)
NEMOTO NAOYA (JP)
KANO TAKAYUKI (JP)
KAGEYAMA NAOSUKE (JP)
Application Number:
PCT/JP2018/042147
Publication Date:
July 18, 2019
Filing Date:
November 14, 2018
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
B21D22/20; B21D22/26; B21D24/04
Foreign References:
| JPH0246930A | 1990-02-16 | |||
| JPH09308921A | 1997-12-02 | |||
| JP2013508170A | 2013-03-07 | |||
| JP2009106961A | 2009-05-21 |
Attorney, Agent or Firm:
CHIBA Yoshihiro et al. (JP)
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