METAL MOLD FOR HOT PRESSING AND METHOD FOR MANUFACTURING METAL MOLD FOR HOT PRESSING

WIPO Patent Application WO/2012/157064

A1

Provided are a metal mold for hot pressing that can quench a workpiece at a sufficient cooling rate without increasing the pressure during press processing of the workpiece and a method for manufacturing the metal mold for hot pressing. A metal mold (10) forms a product (P) having a shape in which a hat-shaped cross-section is continuous from front to back by carrying out cooling simultaneously with carrying out press processing on a heated workpiece (W). The metal mold (10) is provided with a lower mold (101) and an upper mold (102) provided such that the forming surfaces face each other. A protruding part (101a) that protrudes toward the forming surface of the upper mold (102) is formed part way in the left-right direction on the forming surface of the lower mold (101). A recessed part (102a) recessed to match the shape of the protruding part (101a) is formed part way in the left-right direction on the forming surface of the upper mold (102). The lower mold (101) is modified to a modified lower mold (11) by forming protruding shaped built up parts (13) on the forming surface positioned at the end parts of the protrusion of the protruding part (101a) so as to be positioned gradually in the direction of the protrusion of the protruding part (101a) toward the center part of the forming surface in the left-right direction.

JPH03264115	METHOD FOR BENDING AUSTENITIC STAINLESS STEEL PLATE CONTAINING BORON
WO/2022/128734	ARRANGEMENT, METHOD AND STRAIGHTENING UNIT FOR ROLL BENDING OF THE END REGION WITH THE TWO ENDS OF SHARPLY BENT TUBES USING A THREE-ROLL BENDING MACHINE
JP5690950	Mold with circular cam device

NOJIRI ISAO (JP)
ISHII SHINJI (JP)

PCT/JP2011/061189

November 22, 2012

May 16, 2011

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TOYOTA MOTOR CO LTD (JP)
NOJIRI ISAO (JP)
ISHII SHINJI (JP)

B21D5/01; B21D22/20

JP2010207910A	2010-09-24
JP2009095869A	2009-05-07
JP2010075935A	2010-04-08
JP2010023658A	2010-02-04
JP2006326620A	2006-12-07

See also references of EP 2711101A4

YANO Juichiro (JP)
Juichiro Yano (JP)

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