| 摘要 |
PROBLEM TO BE SOLVED: To provide a molding method of a resin molded article, in which method the flow property of a long fiber is promoted to keep a distribution state or isotropy of the long fiber, the same strength as that of a base material is secured in the long fiber to ensure excellent moldability, and the molded article of a fine shape necessary as a component is molded while giving the strength necessary to the molded article without placing a limit on a content ratio or the like of the long fiber.SOLUTION: The molding method of the resin molded article comprises the steps of: supplying a thermoplastic fiber-reinforced resin 1 to a metal die 2 in which a convex molding part 41 is arranged; lowering an upper die 3 so that the thermoplastic fiber-reinforced resin 1 is pressurized and fluidized in accordance with a shape of the metal die 2; and raising the upper die 3 so that the metal die 2 is opened and the resin molded article 11 having a convex shape part 12 is withdrawn. A metal die passage 42 corresponding to a shape of the convex shape part 12 and a piston 43 slidable in the metal die passage 42 are arranged in the metal die 2. The convex molding part 41 is composed of the metal die passage 42 and the piston 43. The piston 43 is disposed at the position of the base material surface of the thermoplastic fiber-reinforced resin 1 or in the vicinity of the base material surface in the initial stage of the step of lowering the upper die 3 so that the thermoplastic fiber-reinforced resin 1 is pressurized. At the step of lowering the upper die 3 so that the thermoplastic fiber-reinforced resin 1 is pressurized and fluidized, the piston 43 is slid in the metal die passage 42 to the edge direction of the metal die 2. |
