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Structural form and heating device of hot runner plastic injection mold

Jun 24, 2019

The hot runner plastic injection mold mainly refers to a mold that uses a heating device to make the melt in the flow passage not solidify at all times during use. Because it is shorter than conventional mold forming cycles and saves raw materials, hot runner molds are widely used in various industrially developed regions.

The hot runner system of the hot runner plastic injection mold is generally composed of a hot nozzle, a manifold, a temperature control box and accessories. Hot nozzles generally include two types: open hot nozzles and needle valve hot nozzles. Since the form of the hot nozzle directly determines the selection of the hot runner system and the manufacture of the mold, the hot runner system is often divided into an open hot runner system and a needle valve hot runner system.

The manifold of the hot runner plastic injection mold is used in a multi-cavity or multi-point feed, single point feed but level offset. The material is usually P20 or H13. The manifold is generally divided into two categories, standard and non-standard. The structure is mainly determined by the distribution of the cavity on the mold, the nozzle arrangement and the gate position. The temperature control box includes the main unit, cables, connectors, and wiring male and female sockets. Hot runner accessories typically include heaters and thermocouples, runner seals, connectors, and junction boxes.www.yxhgmould.com