Abstract
This paper deals with a methodology for single gate location optimization for plastic injection mold. The objective of the gate optimization is to minimize the warpage of injection molded parts, because warpage is a crucial quality issue for most injection molded parts while it is influenced greatly by the gate location. Feature warpage is defined as the ratio of maximum displacement on the feature surface to the projected length of the feature surface to describe part warpage. The optimization is combined with the numerical simulation technology to find the optimal gate location, in which the simulated annealing algorithm is used to search for the optimum. Finally, an example is discussed in the paper and it can be concluded that the proposed method is effective.
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References
Courbebaisse, G., 2005. Numerical simulation of injection moulding process and the pre-moulding concept. Computational Materials Science, 34(4):397–405. [doi:10.1016/j.commatsci.2004.11.004]
Courbebaisse, G., Garcia, D., 2002. Shape analysis and injection molding optimization. Computational Materials Science, 25(4):547–553. [doi:10.1016/S0927-0256(02)00333-6]
Jin, S., Lam, Y.C., 2002. 2.5D cavity balancing. Journal of Injection Molding Technology, 6(4):284–296.
Kirkpatrick, S., Gerlatt, C.D.Jr., Vecchi, M.P., 1983. Optimization by simulated annealing. Science, 220(4598):671–680. [doi:10.1126/science.220.4598.671]
Lam, Y.C., Seow, L.W., 2000. Cavity balance for plastic injection molding. Polymer Engineering and Science, 40(6):1273–1280. [doi:10.1002/pen.11255]
Lam, Y.C., Jin, S., 2001. Optimization of gate location for plastic injection molding. Journal of Injection Molding Technology, 5(3):180–192.
Lee, B.H., Kim, B.H., 1995. Optimization of part wall thicknesses to reduce warpage of injection-molded parts based on the modified complex method. Polymer-Plastics Technology and Engineering, 34(5):793–811.
Lee, B.H., Kim, B.H., 1996a. Automated design for the runner system of injection molds based on packing simulation. Polymer-Plastics Technology and Engineering, 35(1): 147–168.
Lee, B.H., Kim, B.H., 1996b. Automated selection of gate location based on desired quality of injection molded part. Polymer-Plastics Technology and Engineering, 35(2): 253–269.
Metropolis, N., Rosenbluth, A.W., Rosenbluth, M.N., Teller, A.H., Teller, E., 1953. Equations of state calculations by fast computing machines. Journal of Chemical Physics, 21(6):1087–1092. [doi:10.1063/1.1699114]
Pandelidis, I., Zou, Q., 1990. Optimization of injection molding design Part I: gate location optimization. Polymer Engineering and Science, 30(15):873–882. [doi:10.1002/pen.760301502]
Pincus, M., 1970. A Monte Carlo method for the approximate solution of certain types of constrained optimization problems. Operations Research, 18:1225–1228.
Shen, C.Y., Yu, X.R., Wang, L.X., Tian, Z., 2004a. Gate location optimization of plastic injection molding. Journal of Chemical Industry and Engineering, 55(3):445–449 (in Chinese).
Shen, C.Y., Yu, X.R., Li, Q., Li, H.M., 2004b. Gate location optimization in injection molding by using modified hill-climbing algorithm. Polymer-Plastics Technology and Engineering, 43(3):649–659. [doi:10.1081/PPT-120038056]
Zhai, M., Lam, L.C., Au, C.K., 2005a. Algorithms for two gate optimization in injection molding. International Polymer Processing, 20(1):14–18.
Zhai, M., Lam, L.C., Au, C.K., Liu, D.S., 2005b. Automated selection of gate location for plastic injection molding processing. Polymer-Plastics Technology and Engineering, 44(2):229–242.
Zhai, M., Lam, L.C., Au, C.K., 2006. Runner sizing and weld line positioning for plastics injection moulding with multiple gates. Engineering with Computers, 21(3): 218–224. [doi:10.1007/s00366-005-0006-6]
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Project (No. 50675080) supported by the National Natural Science Foundation of China
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Li, Jq., Li, Dq., Guo, Zy. et al. Single gate optimization for plastic injection mold. J. Zhejiang Univ. - Sci. A 8, 1077–1083 (2007). https://doi.org/10.1631/jzus.2007.A1077
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DOI: https://doi.org/10.1631/jzus.2007.A1077