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Patent Searching and Data


Title:
PRESS MOLD DEVICE AND PRODUCTION METHOD FOR PRESS-MOLDED ARTICLES
Document Type and Number:
WIPO Patent Application WO/2018/180712
Kind Code:
A1
Abstract:
In order to reduce warping of a vertical wall section, without buckling, that occurs in component shapes not having a flange section, the present invention comprises: a punch and a pad that sandwich a top plate therebetween in the plate thickness direction; a bending blade for bend-molding a vertical wall; and a stopper that faces the bending blade in the press direction and constrains the end section of the material to be machined. The punch is supported by a first cushion component capable of elastically expanding and contracting in the press direction. The bending blade has: an upper mold component and a lower mold component that are arranged facing in the press direction and having an interval (D) therebetween equal to at least a set compression value; and a second cushion component interposed between the upper mold component and the lower mold component, maintaining the interval (D), and capable of contracting in the press direction at at least a prescribed pressure. The cushion pressure of the second cushion component is smaller than the cushion pressure of the first cushion component and has sufficient cushion pressure so as to not contract during bend-molding of the vertical wall section.

Inventors:
MIYAKE Hiroto (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
SHINMIYA Toyohisa (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
Application Number:
JP2018/010829
Publication Date:
October 04, 2018
Filing Date:
March 19, 2018
Export Citation:
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Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
International Classes:
B21D5/01; B21D22/20; B21D22/26; B21D24/00; B21D24/02; B21D37/08
Domestic Patent References:
WO2015083812A12015-06-11
Foreign References:
JPH04284921A1992-10-09
Attorney, Agent or Firm:
MORI Tetsuya et al. (NICHIEI Patent and Trademark Attorneys, Shiroyama Trust Tower 32F 3-1, Toranomon 4-chome, Minato-k, Tokyo 32, 〒1056032, JP)
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