How many steps are needed to complete plastic toy injection molding?

How to do a plastic toy injection molding, only need 5 points to complete!

Injection mold belongs to a tool for producing plastic products, through this processing method of injection mold, some products with complex shapes can be mass-produced. In the production process of injection mold, the quality of the injection mold directly affects the quality of the final production products. So how to make a perfect injection mold?

Mold manufacturers summarize the following five points.

The first part of plastic part process analysis

The design should be fully analyzed and studied whether its plastic products are in line with the injection molding processing principle. When the mold design is carried out, it needs to be carefully negotiated with the product designer and has reached a consensus. The geometry of the product, dimensional accuracy and appearance requirements, etc. are necessary to discuss, and try to avoid unnecessary complexity in the mold manufacturing process.

　　

The structure design of the mold

A high-quality mold set, not only need fine processing equipment and skilled mold manufacturing workers, but also a very important factor is to have a good mold design, especially for complex molds, the good or bad design accounts for more than 80% of the mold quality. An excellent mold design is: to make the processing cost lower, the processing difficulty lower, and the processing time shorter under the premise of meeting the requirements of customers.

To do this, it is not only necessary to fully digest the requirements of the guests, but also to have a certain understanding of the injection molding machine, mold structure, processing technology, and the mold factory's processing capability.

Therefore, to improve the level of mold design, we should do the following.

1、Understand every detail of each set of mold design and the purpose of each part in the mold.

2、Refer to previous similar designs when designing, and learn experience and lessons from their mold processing and product production.

3、Know more about the processing process of injection molding machines and deepen the relationship between mold and injection molding machines.

4、Go down to the factory to understand the product processing process and understand the characteristics and limitations of each processing process.

5、Understand the results of trial molds and the change of molds of self-designed molds and learn the lessons.

6、In the design, try to use the previous more successful mold structure.

7、Learn more about the effect of mold water ingress on products.

8、Study some special mold structures and understand the latest process of mold.

Three, determine the mold material and choose standard parts

When choosing the mold material, besides considering the precision and quality of the product, it should also combine with the actual processing ability and heat treatment ability of the mold factory to make the right choice. In addition, as far as possible, use the existing standard parts to shorten the production cycle.

Fourth, parts processing and mold assembly

In addition to giving the best structure and reasonable tolerance fit in the design, the parts processing and assembly of the mold is also the key to mold design. Thus, in-mold manufacturing, the machining accuracy, and the choice of machining method occupy the absolute advantage. To reduce mold manufacturing errors, the machining accuracy should be improved first, and this problem is well controlled with the use of CNC machine tools. In addition, for molds with high processing accuracy requirements and large product output, the key parts cavities and cores should be quenched to avoid errors due to mold wear and deformation. To save material, facilitate processing, and heat treatment, the design of medium and large molds, should try to use the collocation structure.

To solve the shrinkage of the forming part uneven and scheduled shrinkage and the actual shrinkage inconsistent with the error caused, usually choose 1/3 of the product tolerance as the manufacturing tolerance of the mold, the purpose is to leave a larger adjustment space for the future forming process, to solve the error in the forming process

V. Trial production

A complete set of molds from design to assembly are only 70% to 80% of the entire production process.

As the expected shrinkage is not consistent with the actual shrinkage, whether the mold release is smooth, how the cooling effect, especially the size, position, and shape of the gate on the product precision and appearance, all need to be tested through the trial mold. Therefore, a mold trial is an indispensable step to check whether the mold is qualified or not and to choose the best molding process.