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Moreover, with the current high mold requirements, higher requirements are placed on temperature control requirements

A successful hot runner mold application project requires multiple links to be guaranteed. The most important of these are two technical factors. One is the control of plastic flow, and the other is the control of plastic temperature. Control of plastic flow: Plastics should be flow balanced in the hot runner system. The gates should be opened at the same time to allow the plastic to simultaneously fill the cavities. For the FAMILYMOLD, where the weight of the parts is very different, the runner size design balance is required. Otherwise, some parts will be filled with insufficient pressure, and some parts will be over-filled and over-sized, and the quality of the flash will be too large. The hot runner sprue size should be reasonable.

The size is too small and the filling pressure loss is too large. If the size is too large, the hot runner volume is too large, and the plastic stays in the hot runner system for too long, which may damage the material properties and cause the parts to be unable to meet the requirements after molding. There are already CAE software such as MOLDCAE in the world that help users to design the best runners. Control of plastic temperature: The control of plastic temperature is extremely important in hot runner mold applications. The processing and product quality problems that occur in many production processes are directly derived from the poor temperature control of the hot runner system. For example, when the hot pin gate method is used for injection molding, the quality of the product gate is poor, the valve gate method is difficult to close the valve needle during molding, and the filling time and quality of the parts in the multi-cavity mold are inconsistent.

If possible, try to choose a hot runner system with multiple zones for temperature control to increase flexibility and resilience. Moreover, with the current high mold requirements, higher requirements are placed on temperature control requirements. At present, there are not many units that can be put into research and development in this field. Domestically, we still use imported imitation products from abroad in the early 1980s, while Suzhou Bo The eMTC series developed by Zhenzhen Technology Co., Ltd. adopts the principle of single-chip microcomputer, realizes multi-channel parallel control, with higher control precision, greater integration, and responsiveness. It is only one-fourth of the size of ordinary temperature control equipment, and only other equipment. A quarter of China injection molding suppliers it has become a professional company in the field. It is currently the only product that can be replaced with international equipment.

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