US 12,070,914 B2
Molding method and molding jig for laminated body
Kodai Shimono, Tokyo (JP); Hiroshi Tokutomi, Tokyo (JP); and Shoya Mano, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 17/312,024
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Oct. 17, 2019, PCT No. PCT/JP2019/040894
§ 371(c)(1), (2) Date Jun. 9, 2021,
PCT Pub. No. WO2020/121648, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 2018-231137 (JP), filed on Dec. 10, 2018.
Prior Publication US 2022/0024159 A1, Jan. 27, 2022
Int. Cl. B29C 70/54 (2006.01); B29C 43/12 (2006.01); B29C 43/36 (2006.01); B29C 70/44 (2006.01); B29K 105/08 (2006.01)
CPC B29C 70/54 (2013.01) [B29C 43/12 (2013.01); B29C 43/3642 (2013.01); B29C 70/44 (2013.01); B29C 2043/3602 (2013.01); B29C 2043/3657 (2013.01); B29K 2105/08 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A forming method for a laminated body comprising:
a lamination step of laminating reinforced fiber base materials on a forming surface of a forming jig to form a laminated body;
an attachment step of attaching a pulling jig for applying tension, to an end portion of the laminated body;
a deformation step of forming a curved portion in the laminated body by bending the laminated body along a curved surface formed on the forming surface while pulling the end portion of the laminated body with the pulling jig; and
a densification step of densifying the laminated body by heating the curved laminated body while pressurizing the curved laminated body,
wherein in the lamination step, the reinforced fiber base materials are laminated such that in the curved portion formed in the laminated body, at least a part of adjacent layers of the reinforced fiber base materials is in a non-adhered state in the deformation step,
wherein the forming surface includes, as the curved surface, a convex curved surface that is convex to an outside of the forming surface, and a concave curved surface that is concave to an inside of the forming surface, and
in the deformation step, a convex curved portion is formed in the laminated body by bending the laminated body along the convex curved surface while pulling the end portion of the laminated body by the pulling jig, and a concave curved portion is formed in the laminated body by pressing the laminated body against the concave curved surface by using a die material while pulling the end portion of the laminated body by the pulling jig,
wherein the die material is fixed to the forming jig via a positioning member having a predetermined length such that a convex portion of the die material fits into the concave curved surface of the forming surface.