| 摘要 |
PURPOSE:To enable the core casting process of insert molding to be achieved in an automatic line by a method in which the primary molded products attached integrally to the runner formed in endless are supplied to secondary molding process by the transfer of the runner, and different resin is composite- molded to the primary molded product by secondary molding. CONSTITUTION:Each primary molded product 2, 2... attached to an endless runner 1 is made integrally by way of the runner 1. The pilot holes 4 which have the corresponding position-relation to each primary molded product 2 set at a specified distance, are drilled on the runner 1. The pilot pins of the secondary mold are inserted into the pilot holes 4, thereby determining exactly the situation of the runner 1 to the mold and positioning exactly each primary molded product 2 to the mold for secondary molding. Then secondary molding is carried out, whereby the resins 3 with different colors from the resin of the primary molding are inserted and composite-molded into each primary molded products 2, 2.... Gates 5 are cut off, and the product molded with two colors may be obtained. |
