| 摘要 |
PURPOSE:To mold thin molded products stably with a high accuracy by a method wherein the injection of a resin is finished when the amount of mold opening, caused by high-speed injection, has coincided with a set value. CONSTITUTION:When a comparator 66 detects that the amount of opening of the parting surfaces 71 of both molds has coincided with the set value of a mold opening amount setter 67 upon injecting a molten resin before a barrel 56 into the cavity of both molds 51, 53 by the advance of a screw 57 with a high speed, a solenoid valve 61 is switched to a neutral station by he signal of the comparator 66 and the advance of the screw 57 is stopped. An injection process is finished with the opening amount of a predetermined amount of the parting surfaces 71, therefore, stable injection and compression molding may be effected. |
