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What is a modular hot runner system?
Aug 02, 2017

In a modular hot runner system, the nozzle and manifold form a simple unit. The melt flows directly from the manifold to the nozzle so that no deviation or flow occurs. Through the screw nozzle is embedded in the manifold, eliminating the nozzle and the splitter between the leakage phenomenon. Conventional bushing systems are designed to produce thermal expansion, which is particularly effective in eliminating such leaks.

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The combined hot runner system is located at the center of the mold and has little connection to the mold, and its manufacturing material is not required to have a high thermal conductivity, nor is it required to set the clamping and pre-tension the die. This minimum connection provides a high-precision and stable temperature curve, so the energy consumption is much lower than the traditional hot runner system.


The combined hot runner system can be preassembled directly with a hydraulic circuit independent of the mold. Hydraulic equipment Direct drive of the valve can also be installed directly on the system, thus omitting the traditional machine control valve, so that more flexible injection molding. In addition, electrical and hydraulic lines can also be configured according to customer requirements. Since the system will undergo electrical, temperature, hydraulic or air pressure testing before delivery, the customer will be provided with a description of the preinstalled system so that it can be easily installed in the mold and put into production immediately.


When the mold or system requires routine maintenance, the combined hot runner system can also be removed from the mold using a simple step, which can be repaired and tested independently of the mold.


In general, the combined hot runner system reduces maintenance costs. The complete hot runner system is based on a modular pre-configured design and installation, where the wires of the heater or thermocouple are removed during assembly. The wires connecting the heaters and the distribution box are housed in a specially designed conduit which is advantageous for the removal of the mold or hot runner system. At the same time, the integrated hot runner system is capable of day-to-day maintenance without disassembly, saving time and reducing the chance of assembly errors.

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