Invention Grant
- Patent Title: Press-molding mold, and press-molding method
- Patent Title (中): 压制成型模具和压模法
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Application No.: US12674074Application Date: 2008-08-05
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Publication No.: US08640519B2Publication Date: 2014-02-04
- Inventor: Masao Kubo
- Applicant: Masao Kubo
- Applicant Address: JP Toyota-shi
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2007-214013 20070820
- International Application: PCT/JP2008/064024 WO 20080805
- International Announcement: WO2009/025171 WO 20090226
- Main IPC: B21D22/21
- IPC: B21D22/21

Abstract:
Provided are a press-molding mold, in which cracks and wrinkles to be formed at the corner portions of a press-molded article are reduced regardless of the depth of the drawing, and a press-molding method using that mold. The press-molding mold (1) comprises a die (2) having a recess (2b) and a wrinkle holding face (2a) formed around the recess (2b), a punch (3) having a protrusion (3a) matching the recess (2b), and a blank holder (4) having a cushion face (4a) matching the wrinkle holding face (2a). In the press-molding mold (1), the wrinkle holding face (2a) and the cushion face (4a) form a clamping portion (14), by which a material member (5) is clamped for the press-molding operation. The clamping portion (14) of the press-molding mold (1) is divided by an opening portion (15) communicating with a corner recess (2c) of the recess (2b), into a first clamping portion (14a) and a second clamping portion (14b), by which the material member (5) is clamped.
Public/Granted literature
- US20110100085A1 PRESS-MOLDING MOLD, AND PRESS-MOLDING METHOD Public/Granted day:2011-05-05
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