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The Effect Of Hot Runner On Plastic Mould
May 23, 2017

Hot runner is indispensable in injection moulding. For plastic processors, the key to benefit from hot runner is to choose the hot runner which is suitable for product forming and to grasp the correct use of hot runner.
Hot runner is also known as water, that is, the solidified nozzle into a molten water mouth, its composition is relatively simple, mainly including shunt plate, hot Tsui, temperature controller 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 production (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 obviously 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 shell, etc., the use of hot runner makes the very difficult injection molding become relatively simplified.
In the mold injection of the multi cavity, the lack of hot runner can not be formed at all. 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 shear force, regardless of the mold has more reasonable geometric balance, the product weight is also difficult to the same, especially for the mold cavity, if not using hot runner, the shape of the outside of the product will be lighter than the inside.
For plastic processors, as long as there is a certain amount of injection molding production, the use of hot runner is quite economical. This is because the hot runner helps the enterprise to eliminate the nozzle in the injection molding process. In most cases, the nozzle cannot be used. Sometimes, the weight of the nozzle is almost the same as the weight of the product, and if the traditional nozzle injection is used, it means that the raw material is as much as the material used in the product. With this calculation, the use of hot Runner can save $number raw materials. In addition, the Hot runner also helps to reduce the die wear and prolong the die life. In general, the service life of the Hot runner die is twice times that of the fine nozzle die.
Although the composition of the hot runner is relatively simple, each component plays an important role. Generally, good quality hot runner has high requirements for structural design and materials.
In addition, hot runner suppliers also need to help customers design and install a suitable hot runner system according to their plastic products and the molds they use.