Hot runner system comes from hot runner system. Generally, the nozzle is not always installed on the splitter plate, but can also be falsely connected to the nozzle flange, but this kind of system needs a fixed plate to maintain the integrity of the system. For most plastic processing processes, because the temperature of the mold is close to 200 ℃, there is a temperature difference between the hot runner and the mold. If the system is connected to the die plate, it will raise the temperature and increase the heat loss, and there may also be a flow dead angle between the splitter plate and the nozzle. When the hot runner needs to be repaired, the hot runner must be completely removed from the mold. Since the nozzle is not connected to the diverter plate, the electrical and hydraulic lines must be completely disassembled and connected after the maintenance.
Although the hot runner and the injection mold are a whole, its role and function are completely different from the mold itself. For the independent unit composed of the system, its installation, connection and operation have special high-precision position requirements. For these reasons, the assembly of hot runner system has become a bottleneck in mold installation. Therefore, avoiding errors in the installation of hot runner system, simplifying system connection and saving assembly time have become a very important topic.
Introduction of combined hot runner system
The combined hot runner system is located in the center of the mold and has few connections with the mold. Its manufacturing materials do not need to have high thermal conductivity, nor do they need to set clamping and pre tension the mold pieces. This minimal connection provides a high-precision and stable temperature curve, so the energy consumption is much lower than the traditional hot runner system. The combined hot runner system can directly pre assemble the hydraulic circuit independent of the mold. The valve gate directly driven by the hydraulic equipment can also be directly installed on the system, which omits the control valve on the traditional machine and makes the injection molding more flexible. In addition, electrical appliances and hydraulic circuits can also be configured according to customer requirements.
In the combined hot runner system, the nozzle and splitter plate form a simple unit. The melt flows directly into the nozzle from the splitter plate, so there will be no deviation and flow dead angle. The threaded nozzle is embedded into the distributor plate, eliminating the leakage between the nozzle and the distributor plate. The traditional bushing system design will produce thermal expansion, and this combined system is particularly effective in eliminating such leakage.
Since the system will undergo electrical, temperature, hydraulic or pneumatic tests before delivery, the customer will get instructions for the pre installation of the system, so that it can be easily installed in the mold and put into production immediately. When the mold or system needs routine maintenance, the combined hot runner system can also be removed from the mold by simple steps, so that it can be repaired and tested independently of the mold.
The combined hot runner system can not only reduce the maintenance cost, but also facilitate the disassembly. The integrated hot runner system can be well disassembled and maintained, saving time and cost.