| CPC B29C 70/44 (2013.01) [B29C 53/04 (2013.01); B29C 53/82 (2013.01); B29C 70/543 (2013.01); B29L 2009/00 (2013.01)] | 6 Claims |
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1. A shaping method for shaping a laminated body of multi-layered sheet materials containing reinforcing fibers by using a shaping die,
wherein the shaping die has
a curved portion formed in a convex shape over a predetermined direction,
a first shaping surface on which the first region of the laminated body is arranged,
a first protruding portion protruding from the first shaping surface and arranged facing an end face in the predetermined direction of the first region of the laminated body,
a second shaping surface on which the second region of the laminated body is arranged, and
a second protruding portion protruding from the second shaping surface and arranged facing an end face in the predetermined direction of the second region of the laminated body,
the shaping method comprising:
an arrangement step of arranging a first region in the predetermined direction of the laminated body on the shaping die;
a bending step of bending the laminated body along a surface shape of the curved portion by pressing the second region of the laminated body against the shaping die, the first region of the laminated body being arranged on the shaping die in the arrangement step,
a fixing step of fixing, to the shaping die, a holding member configured to cover the laminated body over the predetermined direction so as to maintain a state where the laminated body is pressed against the curved portion;
a sealing step of sealing an entire part of the laminated body and an entire part of the holding member to the shaping die by a sealing member to form an enclosed space, the sealing member being formed in a sheet-like manner; and
a depressurizing step of depressurizing the enclosed space to thin the laminated body by sucking air of the enclosed space formed in the sealing step,
wherein the fixing step fixes one end in the predetermined direction of the holding member to the first protruding portion and fixes the other end in the predetermined direction of the holding member to the second protruding portion such that the holding member does not come into contact with an end face in a second region of the laminated body, the second region being different from the first region in the predetermined direction,
wherein the bending step is configured to bend the laminated body along the surface shape of the curved portion formed in a convex shape by using a shaping tool which applies tension for maintaining a stretched state of the laminated body such that the second region of the laminated body is moved to come into contact with the second shaping surface while the stretched state of the laminated body is maintained, the holding member being formed in a sheet-like manner or a tape-like manner,
wherein the sealing step seals the whole of the laminated body and the whole of the holding member into the enclosed space by joining one end in the predetermined direction of the sealing member to the first protruding portion and joining the other end in the predetermined direction of the holding member to the second protruding portion, and
wherein in the depressurizing step, the sealing member comes into contact with an entire part of the holding member in response to the depressurization of the enclosed space.
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