Method of producing fiber-reinforced resin-molded member, and method of connecting members
A method of producing a fiber-reinforced resin-molded member includes: preparing a mold including an upper mold and a lower mold forming a cavity, a cavity surface of either the upper mold or the lower mold being provided with a projecting portion; disposing a fiber-reinforcing material in the cavity, closing the molds to generate a state in which the projecting portion presses a part of the fiber-reinforcing material, and filling the cavity with a melted resin to impregnate the fiber-reinforcing material with the melted resin and cure the melted resin; and opening the molds to obtain a fiber-reinforced resin-molded member having an exposed portion and an embedded portion. The exposed portion includes at least a portion pressed by the projecting portion while the molds are closed.
1. A method of producing a fiber-reinforced resin-molded member, the method comprising:
providing a mold including an upper mold and a lower mold by both of which a cavity is formed, a cavity surface of the upper mold or a cavity surface of the lower mold facing the cavity and being provided with a projecting portion;
disposing a fiber-reinforcing material in the cavity;
closing the upper mold and the lower mold to generate a state in which the projecting portion directly presses a portion of the fiber-reinforcing material, in turn compressively deforming each of the directly pressed portion and peripheral fiber-reinforcing material portions of the directly pressed portion;
filling the cavity with a melted resin to impregnate the fiber-reinforcing material with the melted resin, the impregnated resin hardly permeating each of the deformed portion of the fiber-reinforcing material directly pressed by the projecting portion and the deformed peripheral portions of the directly pressed portion;
curing the impregnated resin to form the fiber-reinforced resin-molded member; and
opening the upper mold and the lower mold to obtain the fiber-reinforced resin-molded member, the fiber-reinforced resin-molded member having an exposed portion where the fiber-reinforcing material is exposed to an outside of the cured resin and a portion where the fiber-reinforcing material is embedded in the cured resin, and the exposed portion including at least the directly pressed portion.
2. The method of producing a fiber-reinforced resin-molded member according to claim 1 , wherein the projecting portion includes a core disposed on the cavity surface.
3. A method of connecting members, the method comprising:
producing a first fiber-reinforced resin-molded member and a second fiber-reinforced resin-molded member each by the method according to claim 1 ;
disposing the exposed portion of the first fiber-reinforced resin-molded member opposite to the exposed portion of the second fiber-reinforced resin-molded member; and
connecting the first fiber-reinforced resin-molded member and the second fiber-reinforced resin-molded member to each other by curing a melted resin at least between the oppositely disposed exposed portions of the first and second fiber-reinforced resin-molded members.
4. A method of connecting members, the method comprising:
producing a fiber-reinforced resin-molded member by the method according to claim 1 ;
disposing the exposed portion of the fiber-reinforced resin-molded member to be opposite to a predetermined resin-molded member;
heating and melting a resin of the predetermined resin-molded member in a portion of the predetermined resin-molded member opposite to the exposed portion;
impregnating the exposed portion with the melted resin of the opposite portion of the predetermined resin-molded member; and
curing the resin of the opposite portion which has impregnated the exposed portion so as to connect the fiber-reinforced resin-molded member and the predetermined resin-molded member to each other.