Classification Of Hot Runner Systems

- Oct 08, 2018-

Classification Of Hot Runner Systems

The hot runner system is divided into a fully hot runner and a semi hot runner.Hot runner classification: open (for micro semi-hot runner), needle valve (for adiabatic runner)


The open structure is simple, suitable for micro semi-hot runners, not suitable for adiabatic runners. The adiabatic runners have high limitations on materials, and are directly in contact with the surface of the product, which are prone to drawing and leakage, and have poor surface quality; miniature semi-hot runners It does not touch the product but is exposed to the tiny flow path, so open hot nozzles can be used, and it is widely used in high-precision molds abroad.

Needle valve:


The needle valve type hot runner saves materials, the surface of the plastic parts is beautiful, and the internal quality is tight and the strength is high. There are two major types of needle valve hot runners in the world (according to the injection principle): cylinder type and spring type. The cylinder type controller and timing controller control the cylinder to push the needle valve to close, the structure is more complicated, but the design itself is simple. There are mainly DME (USA), INCOE (USA), MOLD-MASTER (Canada), HUSKY (Canada), AKOMA (China) and so on. Among them, the Japanese century did not enter the Chinese market. Because of its structural characteristics, the cylinder type determines the precision of the mold, and the debugging and maintenance are complicated. Among them, the MOLD-MASTER is called the Rolls-Royce in the hot runner--the heating part is on the nozzle. The great cost of them is in debugging and maintenance, and customers can't basically maintain it themselves. Spring-type one--FISA (Japan), the biggest feature, relying on the balance of spring and injection pressure to control the needle valve switch, assembly and debugging and maintenance is simple, the mold accuracy is not high, Japanese domestic customers basically have their own maintenance capabilities, widely used in home appliances , automotive parts, precision multi-cavity molds. The difference between the spring type and the cylinder is that the timing cannot be controlled, and the problem of the weld line cannot be solved well. Based on the successful experience of thousands of hot runner systems, the plastic technicians have successfully developed: small diameter wear-resistant nozzles; spring needle valves and internal heating nozzles. The plastic hot runner has developed a mosaic heater. The heater is directly embedded in the copper sleeve. Because the thermal conductivity of copper is very good, the copper heater is placed on the hot nozzle to greatly reduce the maintenance cost of the hot runner hot nozzle. .

The price is positioned close to (China market price), MOLD-MASTER, INCOE, DME, AKOMA, HUSKY, FISA, SM (plastic-China). The popular non-hot runners in foreign countries are the ones. In fact, the hot runner molds reduce many design requirements and provide great convenience for designers to develop more mold structures. Plastic Beauty not only inherits the leading technology of Canadian hot runners, but also integrates related injection molding; electric heating and precision machining technology. The company makes full use of human resources and introduces the most advanced system of on-site production and customer service to create a management system that fully satisfies customers.

Previous:How To Maintain A Mold Next:What's Hot Runner Systems