When designing the mold, the gate location and size requirements are relatively strict, and the gate size needs to be further modified after the initial mold trial. The opening position of the gate is an important link to improve the quality, and the different gate position also affects the mold structure.

1. ABS: high fluidity, cheap, suitable for components that do not require high strength (components that are not directly impacted, and do not withstand structural durability in reliability tests), such as internal support frames (keyboard brackets, LCD brackets) )Wait。

The injection molding process from plastic pellets to molding injection products requires a series of rigorous processes. The lack of mastery of any process in the middle will lead to product quality problems. The details are shared as follows.

The size of the wall thickness depends on the external force the product needs to bear, whether it is used as a support for other parts, the number of supporting columns, the number of protruding parts, and the selected plastic material. The wall thickness design of general thermoplastics should be limited to 4mm.

The service life of plastic molds is closely related to correct maintenance. In reality, there are too many cases of mold scrapping due to improper maintenance. After making molds for twenty or thirty years, I can’t remember how many such accidents occurred. It is a pity that the development of the mold is more than 100,000 yuan, and there are not many products.

There may be various problems in the process of mold manufacturing. Today, we will discuss the problem of poor molding of plastic molds and the solution of flow marks. Flow marks are traces of molten resin flowing on the surface of the molded product.