Method for manufacturing efficiently a variety of molded products.

摘要

A method for manufacturing molded products, comprising: a molding cycle, which is a set of processes to be performed sequentially, including, a filling process for filling molten resin into a portion of the product (30) of a mold (1), injecting the molten resin, a process of cooling and solidification to cool and solidify the molten resin in the product portion (30) filled in the filling process, a process of opening the mold to open the mold (1) , a process for extracting the solidified molded product from the product portion (30) of the open mold (1); and a process of closing the mold to close the mold (1); and a process of changing the shape of the portion of a product, to change a shape of a region filled with molten resin (31) in the filling process of the product portion (30), according to multiple types of products molded with different shapes; wherein the multiple types of molded products having different shapes are molded by repeating the molding cycle several times, while the process of changing shape of the product portion is performed; and that during one molding cycle (SA) of the plural-time molding cycles, the process of changing shape of the product portion is performed in accordance with the shape of a molded product (B) to be molded into a next molding cycle (SB) following the main molding cycle (SA).