First, distinguish from materials and design:
The most important point of injection molding mold is the material, then what kind of material is good? Of course, the hard disk is high, the corrosion resistance is strong, and the polishing performance is good, and the mold quality for long-term use is good. The overall design of the mold, including thimble and core; door design, parting surface, exhaust port, gate size and position are reasonable, then see if the injection mold is open and closed, product size is qualified.
Then you can look at the mold process:
To distinguish the quality of plastic mold technology, we must first check whether the size of the injection molded product is qualified. Secondly, the appearance of the injection molded parts should be clean, and the joint surface, the slider and the core should not have burrs. If all of the above can be done, then this set of molds is a qualified mold.
Finally, distinguish from the quality of the mold product:
1. Stability and consistency of product size, surface finish and material utilization.
2. Service life: The number of work cycles a mold can complete or the number of parts produced, while maintaining the quality of the product. 3. Whether the use and maintenance of the mold is the most convenient, whether it is easy to demould, 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 choice of mold materials, usability and safety of the mold structure. The mold part can be processed and the mold maintenance is convenient, and the design should be considered more carefully.