| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection molding method by which a plurality of moldings are simultaneously formed by successively ejecting a molten resin and filling a mold having a plurality of big and small cavities different in volume with the molten resin with time lag using one injection device, stabilizing a predetermined shape and weight of the product to relieve restrictions of product size for each molding with one time of molding action. SOLUTION: A combination of a cavity with a large volume and a cavity with a small volume is selected from a plurality of cavities different in product shapes. Filling of the cavity with a large volume is performed by speed control, while filling of the cavity with a small volume is performed by pressure control. Then, the molten resin to be filled in the other cavity is weighed, and at the same time, filling the cavity with a large volume is performed by speed control, while filling the cavity with a small volume is performed by pressure control, and afterward, the weighing and the injection/filling are repeated. COPYRIGHT: (C)2011,JPO&INPIT |
