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.

A gooseneck operation device of a full-servo multi-axis die-casting machine includes a gooseneck operation device body, which includes a servomotor, a first transmission arm, a second transmission arm, and an injection unit. The servomotor includes a speed reduction mechanism, which is mounted, in an eccentric manner, in a spindle hole formed in the first transmission arm. The second transmission arm includes a rotatable joint section rotatably mounted to an opposite end of the first transmission arm and a transmission section that is provided with two bifurcation sections. The injection unit includes projection sections coupled to the bifurcation sections such that the operation of the servomotor causes the first and second transmission arms to drive the transmission section to rotate and make the bifurcation sections to oscillate frontwards and rearwards with the rotation of the transmission section so as to drive the injection unit to operate.

A full-servo multi-axis die-casting machine includes an injection device body, a gooseneck operation device body and a plurality of mold locking device bodies. The injection device body includes a hollow first frame, a first servomotor, a screw, a transmission unit and an injection unit, so that the screw is caused to rotate by the first servomotor and is converted by the transmission unit into vertical reciprocal movement. The gooseneck operation device body includes a second servomotor, a first transmission arm and a second transmission arm, so that the first transmission arm and the second transmission arm are driven by the second servomotor to allow bifurcation sections to oscillate with rotation of the transmission section. The mold locking device bodies each include a third servomotor, a third transmission arm and a mold retention slide block, so that the mold retention slide block is reciprocally movable in the channel.

To achieve the object mentioned above, the present invention proposes a full-servo multi-axis injection device for a die-casting machine, including a main body, including a hollow frame, servo motor, screw rod, transmission unit, and injection unit, the servo motor being configured on a top of the frame, one end of the servo motor having a deceleration mechanism in connection with one end of the screw rod, another end of the screw rod being in connection with the transmission unit, another end of the transmission unit the injection unit, and the injection unit having at least one input and at least one output. Whereby, the servo motor drives the screw rod to rotate upon running, and the transmission unit converts the rotation of the screw rod to a vertical reciprocating movement.

An injection system applied to a die casting machine includes a container module, a first mold module, a feeding module, and an abutting module. The container module includes a container casing member. The first mold module includes a first inlet structure partially embedded into the container casing member, and a second inlet structure partially embedded into the container casing member. The feeding module includes a first feeding assembly and a second feeding assembly. The abutting module is disposed on the container casing member for downwardly abutting the first feeding assembly and the second feeding assembly. The abutting module downwardly abuts the first feeding assembly so as to firmly position the first feeding assembly on the first inlet structure. The abutting module downwardly abuts the second feeding assembly so as to firmly position the second feeding assembly on the second inlet structure.

A die casting machine includes a stationary die half, an ejector holder block, and die core pieces that extend through the ejector holder block, defining a die cavity when closed. An ejector box backstops the closed ejector holder block and die core pieces. Melt is injected into the die cavity. After a first dwell time, the ejector box is retracted away from the ejector holder block while a closing force is simultaneously applied to maintain the ejector holder block closed on the stationary die half, and the die core pieces are retracted out of the die cavity. After a second dwell time, the melt completely freezes and the ejector block is separated from the stationary die half, opening the die cavity from which the resulting die cast block can be retrieved.

An analysis method for analyzing deformation of a casting in a die casting process includes obtaining a first die frictional stress exerted by a first die on the casting in a mold opening step, and calculating deformation of the casting in the mold opening step using the first die frictional stress. A predetermined frictional coefficient function is selected from a plurality of frictional coefficient functions based on casting conditions and lubrication conditions. A frictional coefficient at each portion of the casting is output by inputting a temperature of a contact surface between the casting and the first die and a contact surface pressure therebetween into the selected predetermined frictional coefficient function. The first die frictional stress acting on each portion of the casting is obtained by multiplying the contact surface pressure and the frictional coefficient.

A method and apparatus for producing semi-solid material castings from its liquid state in a shot chamber of a vertical die casting machine where the liquid material is poured into a shot chamber and rapidly cooled from its liquid state to temperatures below its liquidus. High-intensity ultrasonic vibration is applied to the cast material. The combined action of rapid cooling from the shot chamber, vigorous pushing by the plunger, and radiation of ultrasonic vibration on the cast material in the shot chamber directly turns the initial liquid material directly into a semi-solid slurry. The slurry is then injected into a die cavity to form a casting.

A device is provided for controlling the advancing movement of a casting plunger in a casting chamber of a cold-chamber die casting machine by way of an actuating signal, the advancing movement comprising a chamber filling movement phase from a partial filling position, with a partially filled casting chamber starting volume, to a full filling position, with a filled casting chamber remaining volume. In the device, a respective associated progression of an actuating signal is provided for different specified sets of values of a plurality of process parameters that influence the movement of the molten material in the casting chamber during the chamber filling movement phase, which progression is defined as the most suitable actuating signal progression for the particular set of parameter values. The device is designed to use the most suitable actuating signal progression in dependence on values of the process parameters pertaining at the beginning of a casting cycle for controlling the casting plunger advancing movement during the chamber filling movement phase. The plurality of process parameters include at least one casting chamber geometry parameter, at least one filling amount parameter, at least one casting mold parameter and/or at least one casting chamber temperature or molten material temperature parameter.

An injection device has an injection cylinder for driving a plunger, a gas pressure type accumulator which supplies hydraulic fluid to the injection cylinder, a hydraulic fluid supply device which supplies the hydraulic fluid to the accumulator, a pressure sensor for detecting the gas pressure of the accumulator, and a control device which controls the hydraulic fluid supply device so as to suspend the supply of the hydraulic fluid when detection value of the pressure sensor reaches a predetermined target gas pressure before injection in the state where the hydraulic fluid is supplied from the hydraulic fluid supply device to the accumulator in a molding cycle.