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Functional Characteristics Of Plastic Injection Mold
Aug 17, 2017

The temperature in the injection mould is uneven, and it is related to the time point in the injection cycle. The role of the mold temperature machine is to keep the temperature constant between 2min and 2max, that is to prevent temperature difference in the production process or gap fluctuation. The following control methods are suitable for controlling the mold temperature: the control fluid temperature is the most commonly used method, and the control precision can satisfy most condition requirements. This control method shows that the temperature of the controller is not consistent with the temperature of the die, and the temperature fluctuation of the mould is quite large, because the thermal factors affecting the mold are not directly measured and compensated for these factors including changes in the injection cycle, injection speed, melting temperature and room temperature. The second is the direct control of the mold temperature. The method is to install the temperature sensor inside the mold, which will be used in the case of higher precision of the die temperature control.


Thermal balance control of injection mold the heat conduction of injection molding machine and mold is the key to the production of injection molded parts. Inside the mold, the heat generated by the plastic (e.g. thermoplastic) is passed through the heat radiation to the material and the mold of the steel, passing through the convection to the heat transfer body. In addition, heat is passed through the heat radiation to the atmosphere and to the mold rack. The heat absorbed by the heat conduction body is taken away by the mold temperature machine. The heat balance of the mould can be described as: P=pm-ps. In the formula, p is the heat taken away by the temperature, PM is the heat of the plastic, PS is the heat that the mold radiates to the atmosphere. The purpose of controlling the mold temperature and the influence of the mold temperature on the injection molding process, the main purpose of controlling the mold temperature is to heat the mold to the working temperature, and the second is to keep the mold temperature constant at working temperature. The above two points to do the successful words, you can optimize the cycle time, thereby ensuring the stability of the injection molded pieces of high-quality.