What conditions and technical requirements should be determined before the mold design?
The following conditions shall be determined before the mold design:
1.Materials for injection molding;
2.The shrinkage rate of the injection molding products;
3.The color of the products and the requirements for transparency;
4.The quality of single parts of the products;
5.The projected area of the products;
6.The specifications and models of the injection molding machine [injection molding machine's structural form, one injection amount (g/ sub), clamping force (kN)];
7.The distance between the poles (including longitudinal and transverse, cm x cm);
8.The position and diameter of the fixed die holder and the hole diameter of the fixed mold frame are as follows:
9.The maximum thickness and minimum size of the moulded mold are mm;
10.The hole diameter of the positioning ring of the mold is
11. injection nozzle aperture, mm;
12. tip radius R, mm;
13.Injection molding product samples.
When designing moulds, the content (technical requirements) of the mold structure is preliminarily determined.
1.In accordance with the drawings or samples of the injection molding products, determine the mold structure form (standard, two or three and other types).
2.Select the number of mold cavity.
3.To determine the parting plane structure (plane, permit penetration or flap mold).
4.The form of device ejection device.It includes the shape of ejector rod and plate, the driving mode (oil pressure or pneumatic), action type, etc.
5.The section shape, size and heating mode of the melting flow channel.
6.The structure of the nozzle.
7.The heating and cooling mode of the mold.
8.The special requirements in mold manufacturing and processing.
9.Materials for manufacturing of moulds.
10.Whether the forming surface is plated with chromium.
11.Molding surface hardness requirements.
12 other matters needing attention.