10 Principles Of Die Design Classification Type
1. Consideration of clamping force
The lateral clamping force of the mold is relatively small, so for large products with a larger projected area, the direction of the larger projected area should be placed in the front and rear mold opening and closing directions, and the smaller side projected area should be used as the side To type.
2. Meet product demoulding requirements
The parting surface is for the product to be removed from the mold smoothly. Therefore, the position of the parting surface should be selected at the part with the largest cross-sectional size of the product, which is the most basic principle.
3. The shape of the parting surface
General products often use a parting surface perpendicular to the opening movement direction of the injection molding machine, and only use other shapes of parting surfaces under special circumstances. The shape of the parting surface is based on the principle of convenient processing and demolding. Like a certain curved product, the parting must be based on its curved curvature.
4. Ensure product appearance and quality
Do not choose the parting surface on the smooth outer surface of the product. Generally speaking, the appearance surface is not allowed to have lines and other lines that affect the appearance; for some products with concentricity requirements, all the parts with concentricity requirements must be placed on the same side, so as to ensure their concentricity.
5. Determination of orientation
When determining the position of the product inside the mold, the selection of the parting surface should try to prevent the product from forming side holes or side buckles, and avoid using complex mold structures.
6. Conducive to demolding
Generally, the demolding mechanism of the mold is in the movable mold, so when selecting the parting surface, the product should be left in the movable mold as much as possible after the mold is opened. Therefore, for some places that may stick to the fixed mold, we often add a fixed mold auxiliary demoulding mechanism.
7. Consider the lateral mold opening distance
Generally, the distance of lateral mechanical mold opening is relatively small. Therefore, when selecting the parting surface, the long direction of the core pulling distance should be selected in the direction of opening and closing of the front and rear molds, and the short direction should be regarded as the lateral parting.
8. Mould parts are easy to process
When selecting the parting surface, the mold should be divided into easy-to-process parts to reduce the difficulty of machining.
9. Conducive to exhaust
When the parting surface is used as the main exhaust, the parting surface should be designed at the end of the plastic flow to facilitate the exhaust.
10. R typing
For many products of mold design parting, there is a full circle of R angle at the parting surface. At this time, the parting must consider the best parting of R, and no sharp side can appear.
Related Page:Mold Manufacturing
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