| 摘要 |
PROBLEM TO BE SOLVED: To achieve weight reduction and cost reduction while enhancing the moldability of a resin rib to avoid the molding failure of an apex part in a molding method of a laminated structure, and a mold. SOLUTION: A foamed resin base material 21 is molded in a primary pressurization process wherein a slide shim mechanism 44 is interposed between upper and lower molds 41 and 42 and a molten resin M1 is injected and charged in the groove part 424 of the lower mold 42 while holding the foamed resin base material 21 in a secondary pressurization process of which the pressurization force is higher than primary pressurization force by detaching the slide shim mechanism 44 to narrow a mold clearance to mold the resin rib 22. At this time, in the primary pressurization process of the foamed resin base material 21, an assisting float body 451 is bitten in the foamed resin base material 21 on the side of its corner part from its back side to precisely shape the apex part 20a and, in the second pressurization process of the foamed resin base material 21, the assisting float body 451 embedded in the lower mold 42 to avoid the collapse of the foamed resin base material 21. COPYRIGHT: (C)2008,JPO&INPIT |
