Testing machine for simulating die-casting die cooling process

A testing machine for simulating a die casting cooling process, the testing machine comprises a mold, a cooling unit, a heating unit, and a detection and control unit,

• wherein the mold comprises a base (1), a stationary die (2), a moving die (4), a screw (6), an ejector rod device (5), a driving device (7) and a heating block mounting box (3);
• the stationary die (2) is fixed to the base (1), the moving die (4) is located directly above the stationary die (2), a cavity in which the heating block mounting box (3) is placed is provided between opposite faces of the moving die (4) and the stationary die (2), the heating block mounting box (3) is divided into an upper part and a lower part, embedded in the moving die (4) and the stationary die (2), respectively, a cavity in which a heating block (9) is placed is provided inside the heating block mounting box (3), an upper surface of the moving die (4) is provided with an ejector rod through hole (24), a screw through hole (25), a heating bar mounting hole (26) and a point cooling unit mounting hole (27), the screw (6) extends through the moving die (4), with one end fixed to the stationary die (2) and the other end fixed to the driving device (7), a top end of the ejector rod device (5) is connected to the driving device (7) and extends through the moving die (4) and the upper part of the heating block mounting box (3);
• the cooling unit comprises a cooler (19), a cooling water tank (20), a water pump (22), a valve (23) and a point cooling unit (16), the point cooling unit (16) is mounted in the point cooling unit mounting hole (27), and the point cooling unit (16), the cooler (19), the cooling water tank (20) and the water pump (22) are connected in sequence to form a cooling water circulation circuit;
• the heating unit comprises an external heating module which comprises a heating block (9) and a heating coil (8), and an internal pre-heating module which comprises a heating bar (17) mounted in the heating bar mounting hole (26);
• and
• the detection and control unit comprises a thermocouple (13) mounted on a point cooling unit housing (14) and a controller (18) electrically connected to the thermocouple (13), the valve (23) and the driving device (7) to detect a temperature of each hot point on the moving die (4) according to the thermocouple (13) and to adjust opening and closing of the valve (23).