Methods to Improve the Quality of Injection Molding

The appearance of light spots in the mold is a common quality problem in injection molding. In order to solve this problem, plastic molding manufacturing inc need to explore effective solutions. At present, the methods to improve such problems are mainly concentrated in four aspects: improving structural design, optimizing mold design, improving production process and selecting high-quality raw materials. Today, we will focus on how to improve processing quality through mold design.

Injection molding can improve the mold and thus improve processing quality through the following aspects:

1. Increase the cross-sectional size of the mold runner and gate: Change the point gate to the side gate and use hot runner as much as possible, which can reduce the pressure loss during the filling process and reduce the injection pressure.

2. Increase the number of gates and optimize the position: Injection molding technicians have found that when the number of gates is small, the ratio of the flow length of the melt flowing out of each gate to the thickness of the part will increase, resulting in an increase in the pressure required for filling. Therefore, it is very important to optimize the number and position of gates to ensure that the melt can flow smoothly to their respective filling ends.

3. Reduce the clearance between the moving parts and the mold body: The injection molding factory can use high-rigidity steel to make the moving parts to reduce their compression deformation during processing.

4. Improve the etching pattern on the side of the mold: The injection molding master can thicken the etching pattern on the side of the mold. The strong etching pattern has a strong light scattering ability, thereby visually reducing the difference between the white bright area and the surrounding normal area.

In addition to the above methods of improving the mold, the injection molding process can also improve the quality by changing the texture of the mold and the moving parts. First, the etching pattern can be thickened on the side of the mold to enhance the light scattering effect; second, try to use a matte horizontal pattern to improve the texture of the moving part surface and the side mold core surface, so as to further improve the injection molding quality.