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The Role Of Hot Runner In Plastic Production
May 23, 2017

In the mold injection of the multi cavity, the lack of hot runner can not be formed. It can be said that the hot runner is the best way to ensure the balance of the flow. Because of the plastic in the flow of the shear force, regardless of the mold has a reasonable geometric balance, the shape of the product weight is also difficult to agree, especially for the mold of the cavity, if not using hot runner, the shape of the product outside will be lighter than the inside.
The hot runner plays an important role in injection molding. For plastic processors, the key to benefit from Hot runner is to select the hot runner which is suitable for product forming and to master the correct use of hot runner.
Hot runner (hrs) also known as the water, that is, the solidified nozzle into a molten water mouth, its composition is relatively simple, mainly including shunt plate, hot Tsui, thermostat and so on. Among them, the shunt plate can be divided into working shape, X-shaped, y-type, T-shaped, mouth and other special shape according to the shape; hot nozzle according to shape can be divided into large mouth, Tsim Tsui, needle valve Tsui; Thermostat can be divided into table core type, card and computer centralized control type.
In the injection molding process, the hot runner and the mold with the use, and play a very important role. For example, in the ultra-thin parts of the injection molding (such as mobile phone battery cover), through the use of hot runner can easily produce high-precision, high-quality products; for liquid-poor injection molding materials (such as LCP), through the use of hot runner can significantly improve the fluidity of raw materials to ensure the smooth production of injection molding; For some large injection molded parts, such as bumper and door plate of car, TV back shell, air conditioner housing, and so on, after using hot runner, the very difficult injection molding becomes relatively simplified.