Hot runner cannot be separated from insert molding technology, co-injection molding technology and multi-component injection molding technology.

Due to the limitations of the runner, the ratio of wall thickness and the problem of welded joints, a large number of parts such as automobile bumpers can only be processed by hot runner molds. 

In injection molding, the role of the hot runner system is becoming more and more important. 

Although the hot runner and injection mold are a whole, their functions and functions are completely different from the mold itself. 

For the stand-alone unit of the system, its installation, connection and operation have special high-precision positioning requirements. 

For these reasons, the assembly of the hot runner system is the bottleneck of the mold installation. 

Therefore, it is important to avoid errors in the installation of hot runner systems, simplify system connections and save assembly time. 

The hot runner system is derived from the hot runner system. Typically, the nozzles are not always mounted on the manifold, or may be incorrectly connected to the nozzle's flange, but such systems require a fixed plate to maintain the integrity of the system. 

For most plastic processing, there is a temperature difference between the hot runner and the mold, as the mold temperature approaches 200°C. 

If the system is connected to the template, it will increase the temperature and increase the heat loss, and there may also be a dead space between the manifold and the nozzle. 

When the hot runner needs to be repaired, the hot runner must be completely removed from the mold. 

Since the nozzles are not connected to the manifold, electrical and hydraulic lines must be completely removed and connected after servicing. 

In a combined hot runner system, the nozzle and diffuser form a simple unit. 

The melt flows directly from the diffuser plate to the nozzle, so there are no deviations and dead spots. 

By embedding the threaded nozzle into the diffuser plate, leaks between the nozzle and diffuser plate are eliminated. 

Traditional casing system designs generate thermal expansion, and this combined system is particularly effective at eliminating such leaks. 

The combined hot runner system is located in the center of the mold with few connections to the mold. 

The manufacturing material does not require high thermal conductivity and does not require clamping and pre-tensioning of the mold. 

This minimal connection provides a highly accurate and stable temperature profile, resulting in much lower energy consumption than conventional hot runner systems. 

The combined hot runner system can assemble the hydraulic circuit directly from the mold. 

Valve ports that are driven directly by hydraulic equipment can also be mounted directly on the system, eliminating the need for control valves on traditional machines, making injection molding more flexible. 

In addition, electrical and hydraulic circuits can be configured according to customer requirements. 

Since the system will be tested for electrical, temperature, hydraulic or air pressure prior to delivery, the system will be pre-installed so that it can be easily installed in the mold and put into production immediately. 

When the mold or system requires routine maintenance, the combined hot runner system can also be removed from the mold in simple steps, allowing repair and testing to be performed independently of the mold.