A casting apparatus including a casting die having at least two die halves movable relative to one another between a closed position and an open position, the die halves each comprising a front surface in which a recess is formed, an adjusting device for moving one of the die halves, and a clamping device switchable between a clamping position when the die is closed, and a release position when the die is open. The clamping device is an integral part of the die halves and includes a counter bearing and a locking device. In the clamping position, the locking device is in a form fitting engagement with the counter bearing to lock the die halves in the closed position, and in the release position, the locking device is released from the counter bearing to release the die halves from each other for opening of the die.

A casting and molding equipment for producing an amorphous alloy structural unit, including an injection system, an alloy melting system, a material feeding system, a mold system, a vacuum system, and a protective gas supply system. The injection system includes an injection tube, an injection mechanism, and a plunger rod; the plunger rod is adapted to move along an inner wall of the injection tube, and the injection mechanism is configured to control a moving direction and moving speed of the plunger rod. The alloy melting system includes a melting chamber and a heating unit; the heating unit is configured to melt an alloy material in the melting chamber; the heating unit includes an induction coil or resistance wire; the melting chamber is disposed in the injection tube, and the heating unit is disposed out of the injection tube.

The clamping device has a fixed platen, a moving platen which is movable in an mold opening and closing direction relative to the fixed platen, a tie bar which bridges the fixed platen and the moving platen, a pullout drive device which gives to the tie bar a driving force making the tie bar move to the back side of the fixed platen, and a support mechanism which is provided separately from the pullout drive device and support the load of the tie bar when moving the tie bar.

Provided is a mold opening/closing device that can prevent a ball screw shaft from reaching a risky speed while using a ball screw having a cantilever supporting structure. A mold clamping device according to the present invention is provided with: a ball screw having a ball screw shaft and a ball screw nut that meshes with the ball screw shaft; and a motor that drives the ball screw. One end of the ball screw shaft is supported by a fixation plate or a movable plate so as to be rotatable or non-rotatable, while being restricted in movement in an axial direction and thereby serving as a fixed end, and the other end thereof serves as a free end. Further, the mold clamping device is characterized in that a distance between the ball screw nut and the fixed end is shorter than a distance between the fixed plate and the movable plate.

A mold clamping apparatus according to the present invention includes: a fixed platen to which one mold of a pair of molds is to be mounted; a movable platen which is disposed opposite the fixed platen and to which the other mold is to be mounted; a pressure-receiving platen connected to the fixed platen via tie bars; a mold opening/closing mechanism including a toggle link mechanism for opening/closing and clamping the molds by moving the movable platen back and forth; a drive mechanism including a servo motor for driving the mold opening/closing mechanism; and a control device for controlling the servo motor, wherein the control device includes an acceleration/deceleration adjustment section capable of adjusting an acceleration time, a deceleration time and a target speed of the servo motor during a mold clamping operation.

A movable platen according to the present invention includes: a mold clamping platen having a projecting portion in a mold closing direction-side surface; a mold mounting platen mounted to the projecting portion of the mold clamping paten; and a guide mechanism fixed to the mold clamping paten and supporting the mold mounting platen. Only the mold clamping paten is fixed to the guide mechanism, while the mold mounting platen is not fixed but placed on platen surface support portions.

The present invention aims to stably maintain the posture of a crosshead by means of guide bars without an increase in the size of a link housing or tie bars. An opening/closing apparatus according to the present invention includes: a pressure-receiving plate (14); a fixed platen (12) to which a fixed mold (18) is to be mounted; a frame (11) on which the pressure-receiving plate (14) and the fixed platen (12) are installed; and a movable platen (16) which is movable on the frame (11) and to which a movable mold (19) is to be mounted. The opening/closing apparatus also includes: a crosshead movement mechanism including guide members (50) extending from the pressure-receiving plate (14), and a crosshead (25) whose movement is guided by the guide members (50); an opening/closing mechanism for opening/closing a mold, including a toggle link mechanism (22) connecting the pressure-receiving plate (14), the crosshead (25) and the movable platen (16), and a drive mechanism for driving the toggle link mechanism (22); and a guide member support mechanism for supporting the guide members (50). The guide member support mechanism has support portions (56) which are slidable on the upper surface of the frame (11).

A die casting assembly has a cavity defined by multiple dies, the cavity includes at least one sharp corner. Each of the dies includes multiple die segments. A die segment joint between at least two of the die segments is aligned with the sharp corner.

The present invention aims to stably maintain the posture of a crosshead by means of guide bars without an increase in the size of a link housing or tie bars. An opening/closing apparatus according to the present invention includes: a pressure-receiving plate (14); a fixed platen (12) to which a fixed mold (18) is to be mounted; a frame (11) on which the pressure-receiving plate (14) and the fixed platen (12) are installed; and a movable platen (16) which is movable on the frame (11) and to which a movable mold (19) is to be mounted. The opening/closing apparatus also includes: a crosshead movement mechanism including guide members (50) extending from the pressure-receiving plate (14), and a crosshead (25) whose movement is guided by the guide members (50); an opening/closing mechanism for opening/closing a mold, including a toggle link mechanism (22) connecting the pressure-receiving plate (14), the crosshead (25) and the movable platen (16), and a drive mechanism for driving the toggle link mechanism (22); and a guide member support mechanism for supporting the guide members (50). The guide member support mechanism has support portions (56) which are slidable on the upper surface of the frame (11).

A molding system for a low-pressure light alloy casting plant, extending in height along a main axis, has a mold having a lower half-mold and an upper half-mold. The molding system has a first lower fixed plate on which the lower half-mold is housed, a movable plate on which the upper half-mold is housed, a second upper fixed plate positioned at the top of the movable plate, a movement group for moving the movable plate along the main axis, having an electric drive motor and transmission members operatively connected to the electric drive motor and to the movable plate, a casting ejection group having an electric ejector motor and ejection members movable by the electric ejector motor in an ejection position in which the casting is detached from the upper half-mold, and a command unit controlling operation of the electric drive motor and of the electric ejector motor.