<p>A die cast machine in which the occurrence of surge pressure is reduced to prevent burrs from being produced and molten metal from blowing out and to minimize variation in quality of casting at casting site. The die cast machine has a mold (101) for molding a product, an injection cylinder (102) for injecting molten metal (15) into the mold, and a hydraulic device (103) for pressing the injection cylinder at a high pressure. The hydraulic device has a piston accumulator (20) for supplying operation oil for pressing a piston (13) of the injection cylinder (102) to the injection cylinder and also has an injection cylinder inlet valve (31). The piston accumulator has a high-speed piston accumulator (22, 322) for high speed start-up and also has a low-speed piston accumulator (21, 321) for injection.</p>
