First distinguish from materials and design:
The most important point of the injection molding mold is the material, so what kind of material is good? Of course, the hard disk is high, the corrosion resistance is strong, and there is good polishing performance, and the quality of the mold that can be used for a long time is good. The overall design of the mold, including thimble and core; door design, parting surface, exhaust port, gate size and location are reasonable, and then see whether the injection mold is opened and closed, and whether the product size is qualified.

Then you can see the process of the mold:
To distinguish the quality of plastic mold technology, the first thing to look at is whether the size of the injection molded product is qualified. Secondly, the appearance of injection molded parts should be clean, and there should be no burrs on the joint surface, slider, and core. If all the above can be done, then this set of molds is a qualified mold.

Finally, distinguish from the quality of mold products:
1. The stability and consistency of product size, surface finish and material utilization.
2. Service life: Under the premise of ensuring product quality, the number of work cycles that the mold can complete or the number of parts produced. 3. Whether the use and maintenance of the mold is the most convenient, whether it is easy to demold, whether the auxiliary production time is as short as possible; continuous maintenance cost, maintenance cycle, etc.
Knowing the following determinants, we can find ways to improve the quality of the mold. The basic method of mold design is the most important step to improve the quality of the mold. Many factors need to be considered, including the selection of mold materials, availability and safety of the mold structure. Machinability of the mold part and easy maintenance of the mold, the design should be considered more carefully.
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