What to do if the plastic injection mold leaks?

According to the shape and function of the injection molded process and product, consider dividing to ensure the ease of processing of the product. In order to ensure good manufacturing technology for plastic injection molding and injection molds, split into workpiece shapes suitable for grinding as much as possible, pay attention to improving EDM, and reduce manufacturing costs. During the dismantling process, the standardized design of the injection mold should be considered to facilitate assembly, disassembly and maintenance, reduce labor intensity and save maintenance costs. The thinner the core member the better. If it is too thin, it will reduce the strength of the injection mold core, and it is easy to wear or damage, which is not conducive to production and maintenance. The greater the number of parts, the greater the tolerance, which requires an increase in the cnc machining price and accuracy of each part. This will lead to an increase in manufacturing work time and manufacturing cost.

Plastic injection mold leaks are usually as follows:

1. It appears at the joint of the injection mold cooling water pipe. If water leakage is found, the sealing tape should be wrapped around the thread of the water pipe joint, and then tightened.
2. Due to long-term working conditions, the waterproof ring in the injection mold will be damaged, and the waterproof rubber ring is easy to harden and crack, resulting in water leakage. Poor installation of some waterproof rings can also cause seal failure. Generally, it is necessary to regularly check the installation position and sealing performance of the sealing ring
3. The cooling hole in the injection mold is damaged. The designed wall thickness is sufficient, but the hole wall is cracked due to precision machining errors or post-processing.
4. Maintenance of cooling water hole. The cooling water hole is easy to scale, hinders heat transfer, seriously blocks the waterway, and requires regular maintenance.

Compared with other molds, the structure of injection molds is more complex and precise, and the requirements for operation and maintenance are also higher. Therefore, during the entire injection molding production process, correct use and careful maintenance are of great significance to maintain the normal and efficient production of the enterprise.

About the author: wandna WAN

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