Common Issues And Solutions for Hot Runner

The hot runner of an injection mold is the most critical structural part of the product production, which is related to the product quality and the stability of mold production. However, during normal production, gate blockage is prone to occur, and the machine has to be taken off for repair. The reasons for the blockage are analyzed as follows:

1. The gate is clogged with impurities(Iron blocks, impure plastics, aluminum blocks, etc.)

2. The temperature of the gate is too high, leading to cold material in the gate block and no material injection.

Refer to the issues above, the solutions are as follows:

1. After dismantling the mold, heat and clean the hot nozzle section to remove all debris one by one. Use approximately 7 kg of air pressure to blow out residual material from the manifold and hot nozzle until completely clean.

2. During the heating process, use a thermometer to measure the temperature of the steel components around the hot nozzle to monitor heat loss. Simultaneously, reduce the heat loss of the sealing section at the tip of the hot nozzle to maintain a stable temperature within a certain range, thereby preventing the occurrence of cold material.

The occurrence of foreign material clogging in a hot runner is a relatively common abnormality, and the methods for addressing it often vary. The solutions mentioned above can be effective in preventing incomplete resolutions. 

As a professional mold company, Gree Daikin Precision Mold specializes in manufacturing household appliance molds and is capable of independently resolving almost all mold-related issues. Its expertise has earned it a reputable position in the industry, making it a trustworthy choice for those knowledgeable about molds.