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The staff familiar with the mold temperature machine knows that the mold temperature machine is generally divided into two types: water mold temperature machine and oil mold temperature machine. It is a device that provides a constant temperature heat source for machinery and equipment, with heating and cooling functions. Widely used in plastic molding, light guide plate, die casting, extrusion, extrusion, rubber tires, rollers, chemicals, reactors, bonding, mixing and other industries.
The mold temperature machine is composed of a water tank, a heating and cooling system, a power transmission system, a liquid level control system, a temperature sensor, an injection port and the like. Under normal circumstances, the temperature of the temperature control machine can be used to control the temperature of the temperature, and the temperature can be raised or lowered. The mold temperature machine uses a heat transfer medium with high heat transfer to raise the temperature required by the process to the temperature required by the process in a short time. After the heat balance temperature is set, the temperature can be automatically controlled within a minimum error and the set value can be maintained. The mold temperature machine is composed of a heating and cooling system, a power transmission system, a liquid level control system, a temperature sensor, an injection port and the like.
The pump in the transmission system transports the hot fluid from the unit equipped with the built-in heater and cooler to the heating device, and after returning to the inside of the mold temperature by the heat consumed by the heat device, the temperature sensor measures the temperature of the hot fluid and The data is transferred to a controller of the control section, which adjusts the temperature of the hot fluid to indirectly adjust the temperature of the thermal device. If the mold temperature machine is in production and the temperature of the hot equipment exceeds the set value of the controller, the controller will open the solenoid valve to open the inlet pipe until the temperature of the hot liquid, that is, the temperature returns to the set value. If the mold temperature is lower than the set value, the controller will turn on the heater to continue heating.
The type of mold temperature machine is divided according to the heat transfer fluid (water or heat transfer oil) used. The mold temperature machine for water usually has a large outlet temperature of 90 ° C, and the mold temperature machine for oil is used for the case where the working temperature is ≥ 200 ° C. Usually, the mold temperature machine with open water tank heating is suitable for water or oil, and the large outlet temperature is 90 ° C to ≥ 150 ° C. The main feature of this mold temperature machine is simple design and economical price. On the basis of this machine, a mold temperature machine using pressurized water is derived, which allows an outlet temperature of 160 ° C or higher. Since the temperature is higher than 90 ° C, the thermal conductivity of water is higher than the same temperature. The oil is much better, so this machine has outstanding high temperature working ability.
In addition, there is a forced-flow mold temperature machine. For safety reasons, this mold temperature machine is designed to operate at temperatures above 150 °C, using heat-conducting oil. In order to prevent overheating of the oil in the mold warmer heater, the machine uses a forced flow pumping system, and the heater consists of a number of tube stacks with finned heating elements for diversion.
