Eight precautions for selecting the mold release slope of plastic molds
A plastic mold is a tool for producing plastic products. It consists of several groups of parts. This combination has a molding cavity. During injection molding, the plastic mold is clamped on the injection molding machine, and the molten plastic is injected into the molding cavity, cooled and shaped in the cavity, and then the upper and lower molds are separated. The product is ejected from the cavity through the ejection system and leaves the mold. Close for the next injection. The entire injection process is cyclic.
So how to choose the mold release slope in the end? Let us briefly understand.
1. Where the precision requirements of plastic parts are high, a smaller demoulding slope should be selected.
2. In contrast to the larger and larger plastic parts, the smaller demoulding slope should be used.
3, plastic parts with complex shapes and difficult to demold should choose a larger demolding slope.
4. If the shrinkage of plastic parts is large, a larger demoulding slope should be used.
5. Thicker stripping slope of plastic parts should adopt larger value.
6. If the plastic part is to be kept in the core after demolding, the demolding angle of the inner surface of the plastic part should be smaller than the outer surface. Otherwise, the plastic part should be left in the convex film after demolding. The degree should be smaller than the inner surface.
7. Reinforced plastics should take large values, and easy-to-release plastics can take small values.
8. Take the direction of the slope. Generally, the inner hole is based on the small end, which conforms to the pattern. The slope is obtained from the enlarged direction.