The present technology includes a hydraulic die-casting machine with electric motor actuated by an inverter, which provides an energy saving evaluation system with respect to a die-casting machine without inverter. The hydraulic die-casting machine includes an injection assembly provided with an injection piston for pressurizing case metal poured into a die and a hydraulic circuit for actuating the injection piston, a hydraulic pump for feeding the hydraulic circuit through a delivery line, an electric motor for actuating the hydraulic pump and an inverter for actuating the electric motor, and an evaluation system for evaluation of the energy savings provided by the present tehcnology.

The disclosure provides a local extrusion device for high-pressing casting. The local extrusion device for high-pressure casting includes an extrusion core sleeve, an extrusion rod, an extrusion oil cylinder and an extrusion oil cylinder piston. The extrusion oil cylinder includes the extrusion oil cylinder piston, the extrusion oil cylinder piston is connected with the extrusion rod, the extrusion rod is positioned in the extrusion core sleeve, and the extrusion core sleeve and the extrusion oil cylinder are fixed.

Provided is a casting mold including a lower mold 4 fixed on a base 3, a plurality of horizontal sliding molds 5 to 8 which slide freely on the base 3 between a mold-opening position and a mold-closing position, an upper mold 9, and sliding mechanisms 12, 25 which slide the horizontal sliding molds 5 to 8 in the sliding directions. When sliding the horizontal sliding molds from the mold-opening position to the mold-closing position, the sliding mechanisms 12, 25 cause force to act on a lower section of the horizontal sliding molds 5 to 8 and prevent force from acting on an upper section of the horizontal sliding molds 5 to 8.

A mold-clamping device includes a fixed mold plate including a fixed mold; a movable mold plate including a movable mold; a hydraulic cylinder allowing the movable mold plate to approach or be separated from the fixed mold plate; a hydraulic pressure supply source supplying a hydraulic fluid to the hydraulic cylinder; and a control unit performing driving control on the hydraulic pressure supply source. The control unit includes a flow rate decrease control unit for deceleration for decreasing a flow rate of the hydraulic fluid according to a deceleration gradient set in advance when a movement of the movable mold plate is decelerated according to the deceleration gradient, and a flow rate increase control unit for controlling the flow rate of the hydraulic fluid to increase when the flow rate of the hydraulic fluid is decreased according to the deceleration gradient by the flow rate decrease control unit.

The present invention provides a mold casting device including a raising and lowering mechanism that raises and lowers the upper mold; a die plate that is fixed to the upper mold; and a base member that is provided on upper end portions of the raising and lowering mechanism and supports the die plate from below.

The invention discloses a digital full-automatic die casting apparatus, comprising a longitudinal mounting plate, a mold arranged on a front surface of the longitudinal mounting plate, a mold locking device including a plurality of mold locking mechanisms surrounding the periphery of the mold, an injection device arranged on a back surface of the longitudinal mounting plate, and a PLC controller electrically connected to the mold locking device and the injection device respectively, wherein the mold locking mechanism comprises a mold locking fixed-point assembly arranged on the longitudinal mounting plate, and a hydraulic mold locking assembly connected to the mold locking fixed-point assembly; the mold locking fixed-point assembly comprises a fixed-point servo motor arranged on the longitudinal mounting plate and electrically connected to the PLC controller, a fixed-point screw connected to the mold, a nut screwed to the fixed-point screw, and a transmission structure connected between the fixed-point servo motor and the nut; and the hydraulic mold locking assembly acts on the nut. The digital full-automatic die casting apparatus provided by the invention has a high accuracy and smooth operation of each mechanism, and a high degree of automation, with high efficiency and high quality of cast products.

A hydraulic die-casting machine with electric motor actuated by an inverter, provides an energy saving evaluation system with respect to a die-casting machine without inverter.

When the deceleration start point is reached, the meter-in side of the hydraulic driving actuator is subjected to a flow rate control to thereby start the deceleration control processing. The position to which the movable unit is moved is detected to use a speed instruction corresponding to the movement position to subject the hydraulic driving actuator to a meter-in control. The position to which the movable unit is moved is detected to calculate the moving speed of the movable unit. Based on the speed instruction, the moving speed is subjected to the feedback control using the meter-out control to the hydraulic driving actuator.

The present invention provides a mold casting device including a raising and lowering mechanism that raises and lowers the upper mold; a die plate that is fixed to the upper mold; and a base member that is provided on upper end portions of the raising and lowering mechanism and supports the die plate from below.

When the deceleration start point is reached, the meter-in side of the hydraulic driving actuator is subjected to a flow rate control to thereby start the deceleration control processing. The position to which the movable unit is moved is detected to use a speed instruction corresponding to the movement position to subject the hydraulic driving actuator to a meter-in control. The position to which the movable unit is moved is detected to calculate the moving speed of the movable unit. Based on the speed instruction, the moving speed is subjected to the feedback control using the meter-out control to the hydraulic driving actuator.