Five steps in the injection mold production process

1. Process analysis of plastic products.

Before designing the mold, the designer should fully analyze and study whether the plastic product conforms to the principle of injection molding, and needs to negotiate carefully with the product designer, and a consensus has been reached. This includes necessary discussions on the geometric shape, dimensional accuracy and appearance requirements of the product, and try to avoid unnecessary complexity in mold manufacturing.

2. The mold structure design.

A set of high-quality molds not only requires good processing equipment and skilled mold manufacturing workers, but also a very important factor is to have good mold design, especially for complex molds, the quality of mold design accounts for 80% of the quality of the mold. %above. An excellent mold design is: on the premise of meeting the requirements of customers, the processing cost is low, the processing difficulty is small, and the processing time is short.

To do this, it is necessary not only to fully digest the requirements of the guests, but also to have an understanding of the injection molding machine, mold structure, processing technology and the processing capacity of the mold factory itself.

3. Determine the mold material and select standard parts.

In the selection of mold materials, in addition to considering the accuracy and quality of the product, it is also necessary to give the correct choice in combination with the actual ability of the mold factory's processing and heat treatment. In addition, in order to shorten the manufacturing cycle, the existing standard parts are used as much as possible.

 

4. Parts processing and mold assembly.

In addition to giving the best structure and reasonable tolerance in the design, the precision of the mold is very important for the machining of parts and the assembly of the mold. Therefore, the choice of machining accuracy and machining method occupies an absolute dominant position in mold manufacturing.

 

5. Test mode.

A set of molds is only 70% to 80% of the entire manufacturing process from the start of design to the completion of assembly. For the error caused by the inconsistency between the predetermined shrinkage and the actual shrinkage, whether the demoulding is successful or not, how is the cooling effect, especially the influence of the size, position and shape of the gate on the accuracy and appearance of the product, it must be tested by mold trial. Therefore, mold tryout is an indispensable step to check whether the mold is qualified or not and to choose the best molding process.