| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an injection apparatus of a forming machine, which reduces the workload of an electric machine by a simple configuration. <P>SOLUTION: The injection apparatus 1 of a die-cast machine DC 1 includes: a plunger 5 for extruding a molten metal into a cavity 105; an injection cylinder device 7 for driving the plunger 5; a pressurizing piston 15 formed so as to have a diameter smaller than that of an injection piston 23, the pressurizing piston moving forward inside an injection cylinder tube 21 concentric with and on the back side of the injection piston 23 so that the pressurizing piston can pressurize an operating fluid on the back side of the injection piston 23; a threaded shaft 63 fixed concentric with and on the back side of the pressurizing piston 15, to which a driving force is imparted concentric with the pressurizing piston 15; and the pressurizing electric machine 51 for generating the driving force imparted to the threaded shaft 63. <P>COPYRIGHT: (C)2012,JPO&INPIT |
