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Multi-objective robust design of process parameters in rapid heat cycle molding using conformal cooling channel

Research Project

Project/Area Number 20K04223
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 18030:Design engineering-related
Research InstitutionKanazawa University

Principal Investigator

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

Co-Investigator(Kenkyū-buntansha) 伊藤 誠  金沢大学, 機械工学系, 助教 (30845160)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords最適設計 / 多目的最適化 / プラスチック射出成形 / 機械学習 / ロバスト最適設計
Outline of Research at the Start

プラスチック射出成形品の品質と生産性を劇的に改善するためには,金型内の水管経路設計の抜本的な見直しと,革新的射出成形法の研究開発が必要である.本研究では,射出成形中に金型温度を制御するRapid Heat Cycle Molding (RHCM)を用いた一様加熱・冷却が可能な三次元水管経路設計法の開発と,品質と生産性向上を目的とした多目的ロバスト最適設計法を開発する.シミュレーションを用いて,三次元水管経路設計とRHCM制御パラメータの多目的ロバスト最適設計を行う.シミュレーションで得られた三次元水管経路を内包する金型を金属3Dプリンターで製作し,RHCMの射出成形の検証実験を行う.

Outline of Final Research Achievements

In this research, rapid heat cycle molding (RHCM) that the mold is heated up and cooled down for high product quality and high productivity is adopted, and the process parameters are optimized using design optimization. Weld lines are minimized for high product quality, whereas the cycle time is also minimized for high productivity. Therefore, the multi-objective design optimization is performed. To shorten the cycle time as well as weldline reduction, the RHCM using a heater called the heater-assisted RHCM is developed. Through the numerical simulation, the optimal process parameters are determined. Based on the numerical result, the experiment is also carried out to examine the validity of the proposed approach.

Academic Significance and Societal Importance of the Research Achievements

品質向上と生産性向上を目的とした型温加熱冷却成形の実用化に向けて,シミュレーションを用いて最適なプロセスパラメータを機械学習を活用した最適設計法によって決定できることを示した.また,シミュレーションの結果を検証するため,射出成形機による実験を行い,良好な結果が得られた.型温加熱冷却成形の有用性を広く検証できた点,また機械学習を活用した最適設計法が生産技術分野に活用できることを実証した点は学術的意義は高く,産業応用が可能な点を示したことは実用的にも有意義である.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Development of rapid heating cycle molding using heater and process parameters optimization2023

    • Author(s)
      釣田祥吾, 北山哲士, 高野昌宏, 山崎祐亮, 久保義和, 合葉修司
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 89 Issue: 917 Pages: 22-00311-22-00311

    • DOI

      10.1299/transjsme.22-00311

    • ISSN
      2187-9761
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multi-objective process parameters optimization in rapid heat cycle molding incorporating variable packing pressure profile for improving weldline, clamping force, and cycle time2022

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

      International Journal of Advanced Manufacturing Technology

      Volume: 120 Issue: 5-6 Pages: 3669-3681

    • DOI

      10.1007/s00170-022-08994-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Process parameters optimization in plastic injection molding using metamodel-based optimization: a comprehensive review2022

    • Author(s)
      Kitayama, S.
    • Journal Title

      International Journal of Advanced Manufacturing Technology

      Volume: 121 Issue: 11-12 Pages: 7117-7145

    • DOI

      10.1007/s00170-022-09858-x

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Numerical optimization of multistage packing pressure profile in plastic injection molding and experimental validation2022

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

      Polymers Advavnced Technologies

      Volume: 33 Issue: 9 Pages: 3002-3012

    • DOI

      10.1002/pat.5735

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multi-objective optimization for minimizing weldline and cycle time in rapid heating cycle molding using variable packing pressure profile2022

    • Author(s)
      釣田祥吾, 北山哲士, 高野昌宏, 山崎祐亮, 久保義和, 合葉修司
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 88 Issue: 914 Pages: 22-00048-22-00048

    • DOI

      10.1299/transjsme.22-00048

    • ISSN
      2187-9761
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bi-objective design optimization for weldline reduction and short cycle time using variable injection velocity and variable packing pressure in plastic injection molding2020

    • Author(s)
      北山哲士, 橋本咲良, 高野昌宏, 山崎祐亮, 久保義和, 合葉修司
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 86 Issue: 891 Pages: 20-00161-20-00161

    • DOI

      10.1299/transjsme.20-00161

    • NAID

      130007942830

    • ISSN
      2187-9761
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Optimization of multi-stage packing pressure profile in plastic injection molding2022

    • Author(s)
      Kitayama, S., Matsubayashi, A., Takano, M., Yamazaki, Y., Kubo, Y., Aiba, S.
    • Organizer
      Asian Congress of Structural and Multidisciplinary Optimization 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Multi-objective optimization for minimizing weldline and cycle time using rapid heating cycle molding with heater system2022

    • Author(s)
      Tsurita, S., Kitayama, S., Takano, M., Yamazaki, Y., Kubo, Y., Aiba, S.
    • Organizer
      8th Asian Pacific Congress on Computational Mechanics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ヒーター加熱式型温加熱冷却成形によるプロセスパラメータの最適化2022

    • Author(s)
      釣田祥吾, 北山哲士, 高野昌宏, 山﨑祐亮, 久保義和, 合葉修司
    • Organizer
      第 32 回設計工学・システム部門講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] プラスチック射出成形における多段保圧力プロファイルを用いた反りとサイクルタイムの多目的最適設計2022

    • Author(s)
      釣田祥吾,北山哲士,高野昌宏,山崎祐亮,久保義和,合葉修司
    • Organizer
      成形加工シンポジア' 22
    • Related Report
      2022 Annual Research Report
  • [Presentation] 保持圧力の変化を考慮した型温加熱冷却成形における表面品質と生産性の向上を目的とした最適設計2022

    • Author(s)
      釣田祥吾,北山哲士,高野昌宏,山崎祐亮,久保義和,合葉修司
    • Organizer
      日本機械学会北陸信越支部 2022年合同講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Process parameters optimization for minimizing weldline and cycle time in rapid heat cycle molding using variable packing pressure profile2021

    • Author(s)
      Tsurita, S., Kitayama, S., Takano, M., Yamazaki, Y., Kubo, Y., Aiba, S.
    • Organizer
      International Conference on Design and Concurrent Engineering 2021 & Manufacturing Systems Conference 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 可変圧力プロファイルを用いた型温加熱冷却成形によるウェルドラインとサイクルタイムの多目的最適化2021

    • Author(s)
      釣田祥吾,北山哲士,高野昌宏,山崎祐亮,久保義和,合葉修司
    • Organizer
      日本機械学会 第31回設計工学・システム部門講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 可変保持圧力を用いたRHCMにおけるウェルドライン,サイクルタイム及び型締力の多目的最適化2021

    • Author(s)
      釣田祥吾,北山哲士,高野昌宏,山崎祐亮,久保義和,合葉修司
    • Organizer
      プラスチック成形加工学会第29回秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] プラスチック射出成形におけるウェルドラインと型締力の多目的最適設計2021

    • Author(s)
      陶山聡子,北山哲士,高野昌宏,山﨑祐亮,久保義和,合葉修司
    • Organizer
      日本機械学会 北陸信越支部 北陸信越支部 第58 期総会・講演会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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