Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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Implementation of an simulation-based digital twin for the plastic blow molding process

플라스틱 블로우몰딩 공정의 해석기반 디지털 트윈 구현

  • Seok-Kwan Hong (Department of Molding & Metal Forming R&D, Korea Institute of Industrial Technology)
  • 홍석관 (한국생산기술연구원 금형성형연구부)
  • Received : 2023.09.21
  • Accepted : 2023.09.30
  • Published : 2023.09.30
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Abstract

Blow molding is a manufacturing process in which thermoplastic preforms are preheated and then pneumatically expanded within a mold to produce hollow products of various shapes. The two-step process, a type of blow molding method, requires the output of multiple infrared lamps to be adjusted individually, so the process of finding initial conditions hinders productivity. In this study, digital twin technology was applied to solve this problem. A blow molding simulation technique was established and simulation-based metadata was generated. A response surface ROM (Reduced Order Model) was built using the generated metadata. Then, a dynamic ROM was constructed using the results of 3D heat transfer analysis. Through this, users can quickly check the product wall thickness uniformity according to changes in the control value of the heating lamp for products of various shapes, and at the same time, check the temperature distribution of the preform in real time.

Keywords

Acknowledgement

본 연구는 산업통상자원부 기계산업핵심기술개발사업 "선택적 비등각 표면 온도제어 지능형 블로우 성형시스템 개발(KM220054)"의 지원으로 수행한 연구입니다.

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