Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A Study on Cooling of Piezoelectric Element of Multifunction Equipment for Vacuum Exhaust and Ultrasonic Joining

진공 배기 및 초음파 접합 복합기 진동자 냉각에 관한 연구

  • Park, Sang-Jun (Dept. of Mecharnical and Automotive Engineering, Kongju National University) ;
  • Lee, Young-Lim (Dept. of Mecharnical and Automotive Engineering, Kongju National University)
  • 박상준 (공주대학교 기계자동차 공학부) ;
  • 이영림 (공주대학교 기계자동차 공학부)
  • Received : 2012.01.30
  • Accepted : 2012.04.12
  • Published : 2012.04.30
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Abstract

Vacuum chamber or vacuum tube for the exhaust process of vacuum glazing is presently used, where excessive time and expenses are required to make the whole vacuum chamber or tube vacuum. To solve this problem, multifunction equipment for vacuum exhaust and ultrasonic joining at atmospheric pressure has been developed, in which a piezoelectric vibrator experiences excessive temperature rise resulting in optimizing the cooling of the equipment. Therefore, in this study, cooling effects of natural convection and forced convection methods were identified by numerical analysis and experiments, and cooling performance of the multifunction equipment was optimized.

진공유리 배기공정을 위해 진공챔버나 진공튜브를 이용하는데 챔버 혹은 튜브 내부 전체를 진공으로 만들기 위한 시간과 경비가 과도하게 요구된다. 이러한 문제점을 해결하기 위해 상압에서 진공배기 및 초음파 접합이 동시에 가능한 복합기를 개발하고자 하였는데, 이 경우 진동자인 피에조 온도가 과도하게 상승하여 복합기의 냉각을 최적화할 필요성이 대두되었다. 따라서, 본 연구에서는 수치해석 및 실험을 통해 자연대류 및 강제대류 냉각방식의 효과를 규명하였고 이를 통해 진공 배기 및 초음파 접합 복합기의 냉각 성능을 최적화하였다.

Keywords

References

  1. G. Zhou, "The Performance and Design of Ultrasonic Vibration System for Flexural Mode", Vol. 38, pp 979 -984, 2000. https://doi.org/10.1016/S0041-624X(00)00034-2
  2. J. P. Kang, "A Study on the Design of Ultrasonic Vibration Cutting Tool Horn", Journal of the KSPE Vol. 8, No. 3, pp. 55∼63, 1991.
  3. S. Sherrit, B. P. Dolgin, Y and Bar-Cohen, "Modeling of Horns for Sonic/Ultrasonic Application", Ultrasonic Symposium, Vol. 1, pp. 647-651, 1999.
  4. P. Lesniewski, "Discrete Component Equivalent Circuit for Webster's Horns", Applied Acoustic, Vol. 44, pp. 117-124, 1995. https://doi.org/10.1016/0003-682X(95)91367-C
  5. M. H. Park, T. Y. Kim, T. G. Park and M. H. Kim, "Design and FEM Analysis of Langevin Type Ultrasonic Vibrator", KSMTE, pp. 525-528, 2000.
  6. S. R. Kim, J. H. Lee and C. D. Yoo, "Design of Cylinder Horn for Ultrasonic Welding", Journal of KWJS, Vol. 27, No. 4, pp. 60-66, 2009.
  7. B. C. Kim, J. H. Lee, C. D. Yoo and D. S. Choi, "Longitudinal Ultrasonic Bonding of Strip-type Au Bumps", Journal of KWJS, Vol. 22, No. 3, pp. 62-68, 2004.
  8. J. S. Seo and D. S. Park, "Establishment of Conditions for Ultrasonic Welding of Cu sheet", Journal of the KSMTE, Vol. 19, No. 2, pp. 282-287, 2010.
  9. Catia V5 R17, Dassault Systems, 2006.
  10. Ansys version 12.1. Ansys Inc.