What issues should be paid attention to in the design of plastic molds?

The problems that should be paid attention to in the design of plastic molds are as follows:
1. The rubber inlet should be opened in the thick part of the product to ensure that the filling is smooth and complete;
2. Although it is opened at the margin or bottom without affecting the appearance and function of the product;
3. At the cold material point close to the gate, the pull rod is often arranged at the end to facilitate the demolding of the runner;
4, large or flat products, it is proposed to use multi-point pouring, can prevent product warping deformation and lack of material;
5, its orientation should be selected in order to make the plastic filling process control shortcomings, in order to reduce the pressure loss, which is conducive to mold exhaust;
6, in the slender core close to prevent the opening of the gate, so as to avoid the flow directly to charge the core, the deformation deformation or bending;
7. The gate size is determined by the product size, geometry, structure and plastic type. The small size can be taken first and then corrected according to the test mode condition;
8. Through the analysis or experience of the mold flow, it can be inferred that the fusion line of the product due to the orientation of the gate affects the appearance and function of the product, and can be treated by adding a cold material hole;
9. When a single hole is used, the same product adopts the symmetric pouring method. When the difference product is formed in the same mold, the large product is placed in the orientation close to the mainstream road.