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Multi-objective optimization of injection molding process parameters in two stages for multiple quality characteristics and energy efficiency using Taguchi method and NSGA-II

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Abstract

In this paper, the parameters optimization of plastic injection molding (PIM) process was obtained in systematic optimization methodologies by two stages. In the first stage, the parameters, such as melt temperature, injection velocity, packing pressure, packing time, and cooling time, were selected by simulation method in widely range. The simulation experiment was performed under Taguchi method, and the quality characteristics (product length and warpage) of PIM process were obtained by the computer aided engineering (CAE) method. Then, the Taguchi method was utilized for the simulation experiments and data analysis, followed by the S/N ratio method and ANOVA, which were used to identify the most significant process parameters for the initial optimal combinations. Therefore, the range of these parameters can be narrowed for the second stage by this analysis. The Taguchi orthogonal array table was also arranged in the second stage. And, the Taguchi method was utilized for the experiments and data analysis. The experimental data formed the basis for the RSM analysis via the multi regression models and combined with NSGS-II to determine the optimal process parameter combinations in compliance with multi-objective product quality characteristics and energy efficiency. The confirmation results show that the proposed model not only enhances the stability in the injection molding process, including the quality in product length deviation, but also reduces the product weight and energy consuming in the PIM process. It is an emerging trend that the multi-objective optimization of product length deviation and warpage, product weight, and energy efficiency should be emphasized for green manufacturing.

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Authors and Affiliations

  1. State Engineering Research Center of Numerical Control System, Huazhong University of Science & Technology, 430074, Wuhan, China

    Maosheng Tian, Haizhou Li & Jihong Chen

  2. Department of Electromechanical Science and Engineering, Zhengzhou University of Light Industry, 450002, Zhengzhou, China

    Xiaoyun Gong & Wuyi Ming

  3. School of Mechanical Engineering, DongGuan University of Technology, 523808, Dongguan, China

    Ling Yin

  4. State Key Lab of Digital Manufacturing Equipment & Technology, School of Mechanical Science and Engineering, Huazhong University of Science & Technology, Wuhan, 430074, China

    Zhen Zhang

Authors
  1. Maosheng Tian
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  2. Xiaoyun Gong
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  3. Ling Yin
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  4. Haizhou Li
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  5. Wuyi Ming
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  6. Zhen Zhang
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  7. Jihong Chen
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Correspondence to Zhen Zhang.

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Tian, M., Gong, X., Yin, L. et al. Multi-objective optimization of injection molding process parameters in two stages for multiple quality characteristics and energy efficiency using Taguchi method and NSGA-II. Int J Adv Manuf Technol 89, 241–254 (2017). https://doi.org/10.1007/s00170-016-9065-7

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  • DOI: https://doi.org/10.1007/s00170-016-9065-7

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