Electric heating is a secondary energy source, and water heating is a tertiary energy source. In order to prevent heat loss, a heat shield is usually added to the fixed mold side. I hope it will be helpful for you to understand injection molds! 　　

According to the principle, electric heating energy consumption is low, and the utilization rate is high. After the injection molding is transferred to the holding pressure, cooling water is used to reduce the mold temperature to 60-70°C. High temperature mold molding The temperature requirements are relatively high (usually around 80°C-130°C). Each hot nozzle must be equipped with a sealing needle and an independent air passage. Therefore, it has high requirements for mold steel and plastic materials. The electric heating method is the same as the water heating temperature controller in principle, that is, the heat source is different. Heating method 　　

Mold heating methods usually have steam (hot water) heating and electric heating rod (tube) heating.Regarding the principle of high-gloss seamless injection mold, many people may not know it well, so the following experts from Shenzhen injection mold company will come and give Plastic lockers for household use you a detailed introduction. 3. Therefore, the mold needs to be heated during work. The steam (hot water) heating method is to input steam (hot water) into the mold during the injection molding process through a specific temperature control machine, so that the mold quickly rises up; after injection molding, the mold is cooled with cold water to quickly cool the mold. Good energy-saving benefits. The surface of the cavity is extremely bright (usually mirror level 2 or higher) 　　

The products produced by the high-gloss mold can be directly used for installation (assembly) without any surface treatment. There are many hot nozzles in the hot runner system.. Holding pressure molding at higher mold temperature is beneficial to eliminate defects such as weld lines, flow marks, and product internal stress. It is easy to use, so: if it is a flat (face) product, electric heating is still used. It is individually controlled by solenoid valves and time relays to realize time-sharing glue feeding, so as to achieve control or even eliminate welding The purpose of the trace, the control method is complicated

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