How to prevent deformation in advance when designing plastic parts.

When designing plastic parts, the problems encountered in production should be prevented in advance according to their shape. Avoid wasted time and cost. There are 4 guidelines for self-testing.

Large and thin flat plastic parts are not strong enough and are easily deformed. Designing ribs can avoid these problems at the same time. As the picture shows.

When the box-shaped thin-walled container is made of ABS or PP. The sidewall is prone to concave deformation after injection molding. As shown in figure 2-1(A) and figure 2-1(C).
1)In order to enhance rigidity and reduce deformation, the edge portion of the opening of the thin-walled container is designed to have a curved structure. As shown in figure 2-1(B) and figure 2-1(D).
2)As show figure 2-2(B)and(D)Each side of the side wall is designed to have an outwardly convex curved structure to effectively prevent deformation.
3)Some plastic parts are designed to be rectangular. When designing the mold, the core and cavity can be changed to an outwardly curved shape.

For large housing plastic parts. Due to the anisotropy of the plastic, deformation is easily generated. In order to reduce the deformation, reinforcing ribs can be designed.
The reinforcing ribs should be staggered. As shown in Figure 3-1 (b). It can also be made into a spherical or shaped curved structure. As shown in Figure 3-2 (b).

When designing the mold, pay attention to the height of the core. Avoid making the wall thickness of the molded hole of the product too thin. The injection pressure is high and the miniature is smaller.

Pay attention to details when designing plastic parts. A reasonable design can save a lot of unnecessary trouble.