发明公开
EP3078431A1 PRESS MOLDING DEVICE, PRODUCTION METHOD FOR PRESS MOLDED ARTICLE USING SAID MOLDING DEVICE, AND PRESS MOLDED ARTICLE
审中-公开
PRESSFORM装置，用于生产PRESS状物体这种形式的设备，然后按下状物体
- 专利标题： PRESS MOLDING DEVICE, PRODUCTION METHOD FOR PRESS MOLDED ARTICLE USING SAID MOLDING DEVICE, AND PRESS MOLDED ARTICLE
- 专利标题（中）： PRESSFORM装置，用于生产PRESS状物体这种形式的设备，然后按下状物体
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申请号： EP14867823.8申请日： 2014-12-02
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公开(公告)号： EP3078431A1公开(公告)日： 2016-10-12
- 发明人: NISHIMURA, Ryuichi , NAKAZAWA, Yoshiaki , OTSUKA, Kenichiro , YONEBAYASHI, Toru , HARADA, Ryuichi , HASHIMOTO, Koji
- 申请人： Nippon Steel & Sumitomo Metal Corporation
- 申请人地址： 6-1, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8071 JP
- 专利权人： Nippon Steel & Sumitomo Metal Corporation
- 当前专利权人： Nippon Steel & Sumitomo Metal Corporation
- 当前专利权人地址： 6-1, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8071 JP
- 代理机构： Jackson, Martin Peter
- 优先权： JP2013253148 20131206
- 国际公布： WO2015083367 20150611
- 主分类号： B21D24/00
- IPC分类号： B21D24/00 ; B21D22/26 ; B21D24/12
摘要：
A press-forming apparatus (20) is an apparatus for producing a press-formed product (10) having a hat-shaped cross section that has an external shape that curves in an L shape along a longitudinal direction in a planar view, and includes a punch (31), a first blank holder (32), a second blank holder (33), a preceding portion (54), a second die (53) and a pad (41). When pushing the punch (31) into a die (50) to form a metal plate (70) into the press-formed product (10), a first guide face (50c) of the preceding portion (54) precedes a second guide face (50d) of the second die (53), and thereafter sliding of the first blank holder (32) and the preceding portion (54) relative to the punch (31) is restricted and pushing of the punch (31) into the die (50) is continued in the restricted state to form the press-formed product (10). By this means, the press-formed product (10) in which cracks and wrinkles are reduced is obtained.
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