| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection device capable of improving boosting characteristics.SOLUTION: A control device 11 of an injection device 1 supplies a working fluid from an accumulator 25 to a back side of an injection piston 15 to carry out injection by the output of a control command to a liquid pressure device 9, and at that time, carries out speed control for controlling the speed of a plunger 5 according to an opening degree of an injection control valve 35. The control device 11 opens a boosting valve 33 to supply the working fluid to the back side of a boosting piston 17, by the output of the control command to the liquid pressure device 9, pressurizes the working fluid on the back side of the injection piston 15 with the boosting piston 17 to carry out boosting, and at that time, carries out pressure control for controlling the pressure of a molding material according to the opening degree of the injection control valve 35. The control device 11 can start the output of a control command C1p for the pressure control after starting the output of a control command C2h opening the boosting valve 33, in a transition from injection to boosting.SELECTED DRAWING: Figure 5 |
