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Multi-objective design optimization of process parameters in plastic injection molding using mold temperature control

Research Project

Project/Area Number 17K06114
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Design engineering/Machine functional elements/Tribology
Research InstitutionKanazawa University

Principal Investigator

Kitayama Satoshi  金沢大学, 設計製造技術研究所, 教授 (90339698)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords最適設計 / プラスチック射出成形 / 多目的最適化 / 逐次近似最適化 / CAE / 機械学習 / 射出成形
Outline of Final Research Achievements

This research project has performed a multi-objective optimization of process parameters in plastic injection molding using conformal cooling channel, in which variable packing pressure profile was adopted for warpage reduction and variable injection velocity was adopted for weldline reduction. Numerical simulation in plastic injection molding is so intensive that sequential approximate optimization using computational intelligence is used to optimize the process parameters. The optimal process parameters were determined through the numerical simulation. The experiment was also carried out to examine the validity. Through numerical and experimental result, the validity of this research project has been confirmed.

Academic Significance and Societal Importance of the Research Achievements

機械学習を活用した最適設計法を用いて,射出成形におけるいくつかの課題を解決できた.特に,プロセスパラメータの最適値の決定は試行錯誤的に行われていたものを,最適化技術を用いて決定できるようになったことの意義は大きく,可変圧力プロファイルのよる成形法や可変射出速度プロファイルによる成形法が成形不良に効果的であることがわかり,また検証実験を行うことができ,実用性ある方法であることを示すことができた.一連の研究では,複雑水管と直線水管を同時に用いており,複雑水管を用いれば部品を一様に加熱・冷却できることがシミュレーションを通じて明らかとなり,今後の研究指針を得ることができた.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (13 results)

All 2020 2019 2018 2017

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Simultaneous optimization of variable injection velocity profile and process parameters in plastic injection molding for minimizing weldline and cycle time2020

    • Author(s)
      Hashimoto, S., Kitayama, S., Takano, M., Kubo, Y., Aiba, S.
    • Journal Title

      Journal of Advanced Mechanical Design, Systems, and Manufacturing

      Volume: 14 Pages: 1-10

    • NAID

      130007823084

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optimization of mold temperature profile and process parameters for weld line reduction and short cycle time in rapid heat cycle molding2019

    • Author(s)
      Kitayama, S., Ishizuki, R., Takano, M., Kubo, Y., Aiba, S.
    • Journal Title

      International Journal of Advanced Manufacturing Technology

      Volume: 103 Issue: 5-8 Pages: 1735-1744

    • DOI

      10.1007/s00170-019-03685-3

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Numerical optimization of process parameters in plastic injection molding for minimizing weldlines and clamping force using conformal cooling channel2018

    • Author(s)
      Kitayama, S., Tamada, K., Takano, M., Aiba, S.
    • Journal Title

      Journal of Manufacturing Processes

      Volume: 32 Pages: 782-790

    • DOI

      10.1016/j.jmapro.2018.04.007

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Numerical and experimental investigation of process parameters optimization in plastic injection molding using multi-criteria decision making2018

    • Author(s)
      Kitayama, S., Yamazaki, Y., Takano, M., Aiba, S.
    • Journal Title

      Simulation Modelling Practice and Theory

      Volume: 85 Pages: 95-105

    • DOI

      10.1016/j.simpat.2018.04.004

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multi-Objective Optimization for Warpage and Cycle Time Minimization in Plastic Injection Molding Using 3D Cooling Channel2018

    • Author(s)
      山崎祐亮, 北山哲士, 高野昌宏, 合葉修司
    • Journal Title

      JOURNAL OF JAPAN SOCIETY FOR DESIGN ENGINEERING

      Volume: 53 Issue: 11 Pages: 819-828

    • DOI

      10.14953/jjsde.2017.2784

    • NAID

      130007505976

    • ISSN
      0919-2948, 2188-9023
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multi-objective optimization of process parameters in plastic injection molding using variable pressure profile2017

    • Author(s)
      横山 眞樹, 北山 哲士, 高野 昌宏, 合葉 修司
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 83 Issue: 850 Pages: 17-00067-17-00067

    • DOI

      10.1299/transjsme.17-00067

    • NAID

      130006943400

    • ISSN
      2187-9761
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Simultaneous optimization in plastic injection molding for weldline temperature and clamping force2017

    • Author(s)
      玉田 可南子, 北山 哲士, 高野 昌宏, 合葉 修司
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 83 Issue: 852 Pages: 17-00209-17-00209

    • DOI

      10.1299/transjsme.17-00209

    • NAID

      130006004043

    • ISSN
      2187-9761
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multi-objective optimization of variable packing pressure profile and process parameters in plastic injection molding for minimizing warpage and cycle time2017

    • Author(s)
      Kitayama, S., Yokoyama, M., Takano, M., Aiba, S.
    • Journal Title

      International Journal of Advanced Manufacturing Technology

      Volume: 92 Issue: 9-12 Pages: 3991-3999

    • DOI

      10.1007/s00170-017-0456-1

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Optimization of mold temperature profile and process parameters for minimizing weldline and cycle time in rapid heating cycle molding2019

    • Author(s)
      Ishizuki, R., Kitayama, S., Takano, M., Kubo, Y., Aiba, S.
    • Organizer
      8th International Conference on Manufacturing, Machine Design and Tribology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optimization of variable injection velocity for weldline reduction in plastic injection molding2019

    • Author(s)
      Hashimoto, S., Kitayama, S., Takano, M., Kubo, Y., Aiba, S.
    • Organizer
      8th International Conference on Manufacturing, Machine Design and Tribology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 機械学習を活用した最適設計法とその応用2018

    • Author(s)
      北山哲士
    • Organizer
      第328回塑性加工シンポジウム
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Determination of optimal variable pressure profile and process parameters in plastic injection molding2017

    • Author(s)
      Yokoyama, M., Kitayama, S., Takano, M., Aiba, S.
    • Organizer
      The 36th JSST Annual Conference International Conference on Simulation Technology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Simultaneous optimization of process parameters in plastic injection molding for weldlines and clamping force minimization2017

    • Author(s)
      Tamada, K., Kitayama, S., Takano, M., Aiba, S.
    • Organizer
      The 36th JSST Annual Conference International Conference on Simulation Technology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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