Hot runner is already indispensable in injection molding production. For plastic processors, choosing a suitable hot runner for product molding and mastering the correct usage of the hot runner are the key to benefiting from the hot runner.

   Hot runnerAlso known as a hot nozzle, it refers to the process of turning a solidified nozzle into a molten nozzle. Its composition is relatively simple, mainly including a splitter plate, hot nozzle, temperature controller, etc. Among them, the splitter plate can be divided into I-shaped, X-shaped, Y-shaped, T-shaped, mouth shaped, and other special shapes according to its shape; Hot nozzles can be divided into large water nozzles, pointed nozzles, and needle valve nozzles according to their shape; The temperature controller can be divided into watch core type, plug-in type, and computer centralized control type according to the temperature control method.
In injection molding, the hot runner is used in conjunction with the mold and plays a very important role. For example, in the injection molding production of ultra-thin parts (such as mobile phone battery covers), high-precision and high-quality products can be easily produced by using a hot runner; For injection molding materials with poor flowability (such as LCP), the use of a hot runner can significantly improve the flowability of the materials and ensure smooth injection molding production; For some large injection molded parts, such as car bumpers and door panels, TV rear shells, air conditioning shells, etc., the use of hot runners makes the very difficult injection molding relatively simple.

In injection molding with multiple cavities, the lack of a hot runner makes it impossible to form. It can be said that hot runner is the best technology to ensure the balance of the runner. Due to the shear force in the flow channel of plastic, no matter how reasonable the geometric balance of the mold is, the weight of the formed product is difficult to be consistent, especially for molds with multiple cavities. If a hot flow channel is not used, the outer side of the formed product will be lighter than the inner side.

For plastic processors, as long as there is a certain amount of injection molding production, using a hot runner is quite economical. This is because the hot runner helps enterprises eliminate water nozzles in injection molding production. In most cases, the water outlet cannot be reused. Sometimes, the weight of the nozzle is almost the same as the weight of the product. If traditional nozzle injection molding is used, it means that as many raw materials as the product are used are wasted. Based on this calculation, using a hot runner can save 30% to 50% of the raw material. In addition, the hot runner also helps to reduce mold wear and prolong the lifespan of the mold. In general, the service life of hot runner molds is twice that of fine nozzle molds.

Although the composition of the hot runner is relatively simple, each component plays a very important role. Usually, high-quality hot runners have high requirements for structural design and materials.

In addition, hot runner suppliers also need to assist customers in designing and installing suitable hot runner systems based on their plastic products and the mold used. Haochen has a large number of senior hot runner experts who can design reasonable solutions based on the customer's product situation to ensure that the hot runner system can maximize efficiency in injection molding processing.