12

Mar

Introduction to plastic injection molds: Five major development processes and design key points

Plastic injection molds are an indispensable part of modern manufacturing, affecting product quality, cost and production efficiency. In this article, Qili will introduce the development process and design key points of plastic injection molds to help companies design and produce molds more effectively.

Plastic Injection Mold Development Process

1. Demand analysis and product design

The first step in developing an injection mold is to conduct a detailed demand analysis, including product size, material selection, appearance requirements and production quantity. During the design phase, CAD software is required to create a 3D model to ensure that the design meets functional and production requirements.

2. Mold design

According to the product design, mold design is carried out, including parting surface, gate system, cooling system and ejection mechanism, etc. The design accuracy at this stage will directly affect the product molding quality and production stability.

3. Mold manufacturing

After the mold design is completed, the mold processing stage begins. This includes processes such as CNC machining, EDM and polishing to ensure mold accuracy and durability.

4. Mould testing and modification

After the mold is manufactured, a trial mold is required to verify whether the product quality meets the design requirements. If any problems are found, they need to be corrected to ensure that the final mold can be produced stably.

5. Mass production and maintenance

Once the mold passes the test, it can be put into production. During the production process, molds need to be maintained regularly to extend their service life and maintain stable product quality.

Key points in the design of plastic injection molds

1. Material selection

The choice of mold material is related to the durability and molding effect of the mold. Common mold materials include P20, H13 and S136 steel. Choose the appropriate material according to production needs.

2. Parting surface design

Reasonable parting surface design helps to reduce burrs, improve demoulding smoothness, and ensure the appearance quality of the product.

3. Gate and runner design

The design of the gate and runner system affects the flow and filling of the plastic melt. A good design can reduce problems such as bubbles and shrinkage and improve the quality of the finished product.

4. Cooling system

The efficiency of the cooling system affects the production cycle and product quality. A well-designed cooling system can speed up cooling time and improve production efficiency.

5. Ejection mechanism

Proper ejection design can ensure smooth demoulding of the product and avoid product deformation or damage.

in conclusion

The development process and design of plastic injection molds are key factors affecting product quality and production efficiency. Through accurate demand analysis, reasonable mold design and rigorous manufacturing process, the mold life can be effectively extended and production costs can be reduced. When developing molds, companies should pay attention to design details to ensure the success of the final product.