US 12,459,170 B2
Mold for manufacturing composite material molded product, and method for manufacturing composite material molded product
Toshikazu Sana, Kakamigahara (JP)
Assigned to KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe (JP)
Filed by Kawasaki Jukogyo Kabushiki Kaisha, Kobe (JP)
Filed on Jan. 14, 2022, as Appl. No. 17/575,637.
Application 17/575,637 is a division of application No. 16/988,725, filed on Aug. 10, 2020, abandoned.
Application 16/988,725 is a division of application No. 16/809,551, filed on Mar. 5, 2020, abandoned.
Application 16/809,551 is a continuation of application No. PCT/JP2018/033055, filed on Sep. 6, 2018.
Claims priority of application No. 2017-172195 (JP), filed on Sep. 7, 2017.
Prior Publication US 2022/0134687 A1, May 5, 2022
Int. Cl. B29C 43/32 (2006.01); B29C 70/46 (2006.01); B29K 101/10 (2006.01); B29K 105/08 (2006.01)
CPC B29C 43/32 (2013.01) [B29C 70/46 (2013.01); B29K 2101/10 (2013.01); B29K 2105/0809 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for manufacturing a composite material molded product, the method comprising:
disposing a laminate of prepregs in a cavity between an outer mold and an inner mold of a mold main body;
disposing a pressure distributor in the cavity;
disposing an expansion core in the cavity, wherein the expansion core expands itself, the expansion core is in contact with an outer surface of the pressure distributor and an inner surface of the pressure distributor is in contact with a surface of the laminate before expansion of the expansion core;
sealing the cavity, between the outer mold to the inner mold, by fastening the inner mold to the outer mold with fasteners;
heating the mold main body including the outer mold and the inner mold without pressing to expand the expansion core;
curing the laminate; and
distributing, during the curing, a pressing force to the laminate by the pressure distributor due to expansion of the expansion core, wherein
the cavity is sealed so that a volume of the cavity does not change during the heating, the curing and the distributing,
the laminate is formed into a C-shape
the inner mold is positioned to be enclosed by a first portion of the laminate, a second portion of the laminate and a third portion of the laminate, such that the inner mold is in contact with the inner surface of the laminate,
the pressure distributor is disposed so as to be contiguous over the first, second and third portions and in contact with the outer surface of the first, second and third portions,
the expansion core covers the outer surface of the pressure distributor in a manner that is contiguous over the first, second and third portions, and
the outer mold is positioned adjacent to the outer surface of the expansion core.