Simulation analysis and process optimization of injection molding products based on orthogonal test method
It can be seen from Fig. 5 that the factors B, C, and D are substantially parallel, indicating that there is basically no interaction between factors B, C, and D. There is an intersection between the factor A curve and the factors B, C, and D, indicating that factor A interacts with B, C, and D factors. A comprehensive examination of the interaction of various factors on the forming performance is the direction of further research.
By examining Figure 5, it can be concluded that A1B3C3D3 is the optimal combination of factors. That is, the side position gate, the uniform cooling layout, the 2 s filling time and the 1.4 mm diameter gate process combination.
This combination happens to exist in the L 9 (3 4 ) orthogonal test table. If it does not exist, it can be confirmed by simulation analysis.
4. Conclusion
Through orthogonal test method, the author applied MudflowMPI injection molding analysis software for injection molding simulation, and analyzed the four process factors of gate location, cooling scheme, injection time and gate size, and obtained the best process plan and process parameters. It can be concluded that the position of the injection molding gate should be such that the flow direction of the melt is relatively symmetrical with the structure of the plastic part. The cooling system should make the plastic parts cool as evenly as possible. The injection time can be considered in consideration of the fluidity, crystallinity and mold temperature of the plastic. Prolonged to reduce the injection pressure, the gate size can be appropriately enlarged according to the fluidity of the melt, and the injection pressure can be reduced to reduce the residual stress of the product, so that various factors can fully reduce the warpage deformation of the plastic part.
For more articles, please refer to "Metal Processing" Cold Processing 2008 No. 1
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