Center of gravity of flow channel in injection mold design
1. The inlet should be set at the thicker part of the product to ensure smooth and complete filling;
2. Try to open it in a place that does not affect the appearance and function of the product, but at the edge or bottom;
3. In the cold material hole near the gate, a pull rod is often set at the end to facilitate gate demolding;
4. For larger or flat products, it is recommended to use multi-point feeding to prevent product warping, deformation, and material shortage;
5. The location should be selected to make the plastic filling process short to reduce pressure loss and facilitate mold exhaust;
6. Avoid opening the gate 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 take a small size first, and then correct it according to the trial mold situation;
8. Through mold flow analysis or experience, you can judge whether the appearance and function of the product are affected by the seam line caused by the gate position, which can be solved by adding cold material holes;
9. When there are multiple cavities in a mold, the same product is poured symmetrically. When different products are molded in the same mold, it is best to place the product near the main runner.