| 摘要 |
In the present invention damage to equipment can be avoided by carrying out individual control without joint control of operations of a hydraulic operating means used as a drive source for an injection steps and an electric servo motor. A die casting machine (1) is provided with a cylindrical injection sleeve (12) that supplies molten metal and an injection plunger (13) that is moved inside the injection sleeve and uses an electric servo motor (17) and a hydraulic operating means (21) for the drive sources for injection steps that inject into and fill the inside of a cavity of a metal mold, which has been closed, with the molten metal by forward progress of the injection plunger (13). Also provided is a control means (30) that controls the operations of the electric servo motor (17) and the hydraulic operating means (21) separately during a low-speed injection step and during a high-speed injection step that is carried out following the low-speed injection step at a higher speed than the low-speed injection step in the injection steps, when the forward motion of the injection plunger (13) injects into and fills the inside of the cavity of the metal mold, which has been closed, with the molten metal. |
