a local pressurizing device for die casting mold

摘要

The present invention relates to a die-casting mold local pressing device, and the cavity (2) of the mold (1) thick (5), the hydraulic cylinder 11 wall portion (5) to move by the pressure member to pressurize the molten metal in 10 is installed on, the oil pressure delivery line for supplying the hydraulic pressure to the hydraulic cylinder 11 operated valves controlled by the electronic control unit 14, 12 is doedoe installation, the control unit 14 is a thermocouple for measuring the temperature of the thick part (5) is embedded in the molten metal after the pressing member 10 (13) temperature has reached the set temperature, measured from the ground comprises a structure to operate the hydraulic cylinder 11 on to the solenoid valve (12). ; Thus, the external condition and always constant, regardless of and as can give the appropriate pressure and thick (5) for the molten metal solidification process it is possible to prevent the crack point and systolic occurring in thick carriage (5) to improve the quality of the product.