Hot runner has become indispensable in injection molding production. For plastic processing enterprises, choosing the hot runner suitable for product molding and mastering the correct use method of the hot runner are the key to benefit from the hot runner. Then, let's learn about the role of the hot runner in Dongguan plastic mold design!

Hot runner (HRS), also known as soup port, changes the solidified nozzle into a molten nozzle. Its composition is relatively simple. Dongguan plastic mould mainly includes splitter plate, thermal nozzle, temperature controller, etc. The splitter plate can be divided into I-shape, X-shape, Y-shape, T-shape, mouth shape and other special shapes according to its shape; According to the shape, the thermal nozzle is divided into large water port, front-end nozzle and needle valve nozzle; The temperature controller is divided into clock core type, box type and computer centralized control type according to the temperature regulation mode.

In Dongguan plastic mold processing, the combination of hot runner and mold plays a very important role. For example, in the injection production of ultra-thin parts such as mobile phone battery cover, for the injection raw materials with poor fluidity that can easily produce high-precision and high-quality products through the use of hot runner, such as LCP, the fluidity of raw materials can be significantly improved to ensure the smooth progress of injection production. For large injection molded products such as automobile bumper, door panel, TV rear shell and air conditioning shell, The use of hot runner can make very difficult injection molding easier.

In multi cavity mold injection molding, if the hot runner is insufficient, it cannot be molded. Hot runner can be said to be a technology to ensure the balance of runner. Because the plastic has shear force on the flow channel, no matter how much reasonable geometric balance the die has, the weight of the formed product is difficult to be consistent. Especially in the case of multi cavity die, if the hot runner is not used, the outer side of the formed product will be lighter than the inner side.

For plastic processing enterprises, as long as there is a certain batch of injection molding production, the use of hot runner is quite economical. This is because the hot runner helps enterprises eliminate the nozzle through injection molding production. In most cases, the nozzle cannot be reused. Sometimes, the weight of the nozzle is similar to that of the product. If the traditional nozzle injection method is adopted, it means that there are as useless raw materials as the raw materials used in the product. It is estimated that using hot runner can save 30% ~ 50% of raw materials.

In addition, the hot runner also helps to reduce the wear of the die and prolong the service life of the die. Generally speaking, the service life of hot runner die is twice that of fine nozzle die.

The structure of hot runner is relatively simple, but its components play an important role. Generally, high-quality hot runner has high requirements for structural design and materials. As for the sharp hot runner, all the heaters and temperature sensing lines used are imported from Korea, and the steel used are imported from Japan, which are the preconditions to ensure the quality of the hot runner. The hot runner supplier shall also help the customer design and install a suitable hot runner system according to the customer's plastic products and molds.

When PP material is used for door panel, Y-shaped splitter plate and three hot nozzles and three-point hot runner are usually used. This scheme greatly reduces the manufacturing cost on the basis of ensuring the product forming quality; When the door panel is made of fireproof ABS material, in order to ensure the smooth forming of the product, it is necessary to use five hot runner channels, including special splitter plate and five hot nozzles.

The above is the function of hot runner in Dongguan plastic mold design. If you need to know more, you can contact us at any time!