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10 Principles Of Mold Design Classification
- Jul 16, 2018 -

1. Consideration of locking force

The lateral mold clamping force is relatively small, so for large product projection area is larger, it should be the direction of the projection area is large on the direction of mold before and after the process, and the lateral projection area of smaller as a side parting.

2. Meet the requirements of product demoulding

The parting surface is for the product to take out the mold smoothly.Therefore, the position of the parting surface should be chosen in the part with the largest cross-section size of the product, which is the most basic principle.

3. The shape of the parting surface

For general products, a parting surface perpendicular to the opening direction of the injection molding machine is usually adopted. In special cases, the parting surface of other shapes is adopted.The shape of the parting surface is convenient for machining and moulding.When dividing a product like this, the curvature of its curvature is obtained.

4. Ensure product appearance and quality

The parting surface should not be selected on the smooth surface of the product.The appearance surface is generally not allowed to have clip line and other lines that affect the appearance of beauty;Some products with concentricity requirements have to put all parts with concentricity requirements on the same side to ensure concentricity.

5. Determination of orientation

When determining the orientation of the product in the mold, the selection of the parting surface should try to prevent the product from forming side holes or side buckles.

6. It is conducive to demoulding

The demoulding mechanism of the general mold is in the moving mold, so when selecting the parting surface, the product should be left in the moving mold after the opening of the mold as much as possible.Therefore, for some places where it is possible to stick to the die, we will often add the die setting auxiliary stripping mechanism.

7. Consider the lateral opening distance

Generally, the distance of the lateral mechanical mold opening is relatively small.Therefore, when selecting the parting surface, the direction of the long core distance should be selected in the direction of front and rear die opening and closing, and the short direction should be regarded as the side parting.

8. Mold parts are easy to process

When selecting the parting surface, the mould should be divided into parts that are easy to be processed, so as to reduce the difficulty of machining.

9. Good 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 classification

For many products of mold design classification, there is a whole circle of R Angle at the parting surface. At this time, the parting should take into account the R optimal parting, and the sharp side should not appear.



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