Matters needing attention when designing injection molding

Precautions when designing plastic mold injection processing

One, the focus of plastic mold injection processing design

1. The glue inlet should be opened in the thick part of the product to ensure smooth and complete mold filling;

2. Try to open it at a place that does not affect the appearance and function of the product, and it can be at the edge or bottom;

3. At the end of the cold material hole near the gate, a drawing rod is often set at the end to facilitate the demolding of the runner;

4. For large or flat products, it is recommended to use multi-point pouring to prevent product warpage and deformation and lack of material;

5. The location should be selected to make the plastic filling process the shortest to reduce pressure loss and facilitate mold exhaust;

6. Avoid opening gates near the slender core to prevent the material flow from directly impacting the core, causing deformation, dislocation or bending;

7. The gate size is determined by the product size, geometry, structure and plastic type. You can select a small size first and then modify it according to the trial mold condition;

8. Through mold flow analysis or experience, it can be judged whether the joint line produced by the gate position of the product affects the appearance and function of the product, and a cold slug hole can be added to solve it;

9. When a mold has multiple cavities, the same product adopts the symmetrical pouring method. When different products are molded in the same mold, the largest product should be placed close to the main runner first.