1. Determine the opening direction and parting line position of high-precision plastic mold

At the beginning of the design of any plastic workpiece, its mold opening direction and parting line should be determined first to ensure that the core slider mechanism is reduced to the maximum extent, to avoid the phenomenon of undercutting in the mold opening direction, to improve the mold appearance and performance, and to reduce the impact of parting line on the appearance.

2. Properly adjust the draft angle of high-precision plastic mold

It can avoid white edge, deformation, crack and other damages on the top of the product. In the design of deep cavity structure products, the slope of the outer surface should be greater than the slope of the inner surface as much as possible to ensure that the plastic mold core will not move, so as to obtain uniform product wall thickness, while ensuring material strength and product opening time.

3. Each kind of plastic has a certain wall thickness range

It is generally 0.54mm. When the wall thickness exceeds 4mm, it will lead to problems such as too long cooling time and shrinkage of plastic products. At this time, we should consider changing the product structure. Uneven wall thickness will cause surface shrinkage.

In addition, reasonable use of reinforcing ribs can increase the rigidity of products and reduce deformation.