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Mold Science

Why do injection molds have to be tested

Most of the defects of injection parts are caused in the stage of mold plasticization and injection molding, but sometimes they are also related to unreasonable design. The influencing factors include the type of injection inlet, the number of mold cavity, position and size, the design of cold/hot runner system and the structure of the product itself. Therefore, in order to avoid product defects caused by mold design, we need to analyze the injection mold in the manufacturing process.
After obtaining the results of injection mold test, the operator usually needs to re-evaluate the specific situation of the mold in order to avoid adding unnecessary cost and time in the process of modification. In most cases, in order to compensate for the deficiencies in mold design, the operator may make incorrect settings without knowing it, because the range of parameters required for the production of qualified products is very small. Once any deviation occurs in parameter settings, the quality of the final product may be far beyond the allowable range of errors.
The purpose of injection mold test is to find out the optimized process parameters and mold design. Not just to get a good sample. This is very important. Even if factors such as materials, machine settings or environment have changed, stable and continuous mass production environment can still be ensured.