Don't ignore these problems when injecting molds

2021-03-25 09:06:48 admin

Don't ignore these problems when injecting molds




Injection mold is also a processing method, but it is different from other processing methods. It is mainly for some plastic products. However, a little error can easily lead to signs of unqualified finished products. Today I will introduce you to the injection molding process. Easily overlooked issue.




1. Check whether there are signs of wear between the guide post and the guide sleeve after injection molding. If there are signs of scratching, it is caused by lack of lubrication. If the trajectory has just appeared, you can also extend the life of the guide post and sleeve by adding more lubrication to the guide post and sleeve. If the wear is severe, new parts need to be replaced. Otherwise, the cavity and the core are not suitable, which will result in different thicknesses of the cavity wall.




2. Check the flow rate of the injection mold, connect the hose at the outlet of the waterway, and make the water enter the bucket through the pipe. If the water is not clear or colored, it will rust, and poor water flow means that it is clogged somewhere.




3. Clean the thimble. After one year, the thimble becomes dirty due to gas accumulation and film-like impurities. It is recommended to clean it with mold cleaner every six to twelve months.




4. Check whether there is a fracture in the radius area of the hot nozzle. The fracture is caused by the clamping force of the loose and hardened plastic fragments remaining in the hot nozzle of the machine on the injection cylinder assembly during forward injection. If the damage is too severe to prevent petal leakage (the term used by users of injection molds was plastic leakage between the guide sleeve and the hot nozzle of the machine), the guide sleeve should be replaced.