Improved contact lens injection molding production by 3D printed conformal cooling channels

Y. F. Lin, J. R. Wu, B. H. Liu, W. C.J. Wei, A. B. Wang, R. C. Luo

研究成果: Conference contribution

1 引文 (Scopus)

摘要

In this research, the combination of finite element simulation and 3D printing enabled casting was adapted to overcome the restrictions on traditional machining processes, we presented a fabrication method for complex injection molding mold pieces with a shorter time and lower processing cost than traditional machining and laser-or e-beam-based 3D printing methods. Based on the plastic injection molding simulation results, which considered the cooling rate of the contact lens mold and the cooling time of each part of the mold, we concluded that the design of conformal cooling channel locating at contact lens mold had little influence on the period of injection. When the mold cavities had smaller total volume ratio than the sprue, such as our contact lens mold, the cooling time of the sprue would be longer than the mold cavities, therefore more attention should be paid on the cooling of the sprue. However, the simulation results showed that the cooling efficiency did not increased significantly when a conformal cooling channel was placed in the sprue bush. But the cooling time reduce about 20%. In other words, the cooling of sprue bush dominated production cycle time. Therefore, a smart mold with real-time temperature monitoring was made with 3DP and mold flow simulation for this work.

原文English
主出版物標題SII 2017 - 2017 IEEE/SICE International Symposium on System Integration
發行者Institute of Electrical and Electronics Engineers Inc.
頁面89-94
頁數6
ISBN(電子)9781538622636
DOIs
出版狀態Published - 2018 二月 1
事件2017 IEEE/SICE International Symposium on System Integration, SII 2017 - Taipei, Taiwan
持續時間: 2017 十二月 112017 十二月 14

出版系列

名字SII 2017 - 2017 IEEE/SICE International Symposium on System Integration
2018-January

Other

Other2017 IEEE/SICE International Symposium on System Integration, SII 2017
國家Taiwan
城市Taipei
期間17-12-1117-12-14

指紋

contact lenses
Contact lenses
Injection Molding
injection molding
Injection molding
Lens
Cooling
Contact
cooling
Machining
machining
printing
Printing
Cavity
simulation
Plastics molding
cavities
Flow simulation
Flow Simulation
Finite Element Simulation

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Instrumentation
  • Artificial Intelligence
  • Computer Science Applications
  • Engineering (miscellaneous)
  • Materials Science (miscellaneous)
  • Control and Optimization

引用此文

Lin, Y. F., Wu, J. R., Liu, B. H., Wei, W. C. J., Wang, A. B., & Luo, R. C. (2018). Improved contact lens injection molding production by 3D printed conformal cooling channels. 於 SII 2017 - 2017 IEEE/SICE International Symposium on System Integration (頁 89-94). (SII 2017 - 2017 IEEE/SICE International Symposium on System Integration; 卷 2018-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SII.2017.8279194
Lin, Y. F. ; Wu, J. R. ; Liu, B. H. ; Wei, W. C.J. ; Wang, A. B. ; Luo, R. C. / Improved contact lens injection molding production by 3D printed conformal cooling channels. SII 2017 - 2017 IEEE/SICE International Symposium on System Integration. Institute of Electrical and Electronics Engineers Inc., 2018. 頁 89-94 (SII 2017 - 2017 IEEE/SICE International Symposium on System Integration).
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abstract = "In this research, the combination of finite element simulation and 3D printing enabled casting was adapted to overcome the restrictions on traditional machining processes, we presented a fabrication method for complex injection molding mold pieces with a shorter time and lower processing cost than traditional machining and laser-or e-beam-based 3D printing methods. Based on the plastic injection molding simulation results, which considered the cooling rate of the contact lens mold and the cooling time of each part of the mold, we concluded that the design of conformal cooling channel locating at contact lens mold had little influence on the period of injection. When the mold cavities had smaller total volume ratio than the sprue, such as our contact lens mold, the cooling time of the sprue would be longer than the mold cavities, therefore more attention should be paid on the cooling of the sprue. However, the simulation results showed that the cooling efficiency did not increased significantly when a conformal cooling channel was placed in the sprue bush. But the cooling time reduce about 20{\%}. In other words, the cooling of sprue bush dominated production cycle time. Therefore, a smart mold with real-time temperature monitoring was made with 3DP and mold flow simulation for this work.",
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Lin, YF, Wu, JR, Liu, BH, Wei, WCJ, Wang, AB & Luo, RC 2018, Improved contact lens injection molding production by 3D printed conformal cooling channels. 於 SII 2017 - 2017 IEEE/SICE International Symposium on System Integration. SII 2017 - 2017 IEEE/SICE International Symposium on System Integration, 卷 2018-January, Institute of Electrical and Electronics Engineers Inc., 頁 89-94, 2017 IEEE/SICE International Symposium on System Integration, SII 2017, Taipei, Taiwan, 17-12-11. https://doi.org/10.1109/SII.2017.8279194

Improved contact lens injection molding production by 3D printed conformal cooling channels. / Lin, Y. F.; Wu, J. R.; Liu, B. H.; Wei, W. C.J.; Wang, A. B.; Luo, R. C.

SII 2017 - 2017 IEEE/SICE International Symposium on System Integration. Institute of Electrical and Electronics Engineers Inc., 2018. p. 89-94 (SII 2017 - 2017 IEEE/SICE International Symposium on System Integration; 卷 2018-January).

研究成果: Conference contribution

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N2 - In this research, the combination of finite element simulation and 3D printing enabled casting was adapted to overcome the restrictions on traditional machining processes, we presented a fabrication method for complex injection molding mold pieces with a shorter time and lower processing cost than traditional machining and laser-or e-beam-based 3D printing methods. Based on the plastic injection molding simulation results, which considered the cooling rate of the contact lens mold and the cooling time of each part of the mold, we concluded that the design of conformal cooling channel locating at contact lens mold had little influence on the period of injection. When the mold cavities had smaller total volume ratio than the sprue, such as our contact lens mold, the cooling time of the sprue would be longer than the mold cavities, therefore more attention should be paid on the cooling of the sprue. However, the simulation results showed that the cooling efficiency did not increased significantly when a conformal cooling channel was placed in the sprue bush. But the cooling time reduce about 20%. In other words, the cooling of sprue bush dominated production cycle time. Therefore, a smart mold with real-time temperature monitoring was made with 3DP and mold flow simulation for this work.

AB - In this research, the combination of finite element simulation and 3D printing enabled casting was adapted to overcome the restrictions on traditional machining processes, we presented a fabrication method for complex injection molding mold pieces with a shorter time and lower processing cost than traditional machining and laser-or e-beam-based 3D printing methods. Based on the plastic injection molding simulation results, which considered the cooling rate of the contact lens mold and the cooling time of each part of the mold, we concluded that the design of conformal cooling channel locating at contact lens mold had little influence on the period of injection. When the mold cavities had smaller total volume ratio than the sprue, such as our contact lens mold, the cooling time of the sprue would be longer than the mold cavities, therefore more attention should be paid on the cooling of the sprue. However, the simulation results showed that the cooling efficiency did not increased significantly when a conformal cooling channel was placed in the sprue bush. But the cooling time reduce about 20%. In other words, the cooling of sprue bush dominated production cycle time. Therefore, a smart mold with real-time temperature monitoring was made with 3DP and mold flow simulation for this work.

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PB - Institute of Electrical and Electronics Engineers Inc.

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Lin YF, Wu JR, Liu BH, Wei WCJ, Wang AB, Luo RC. Improved contact lens injection molding production by 3D printed conformal cooling channels. 於 SII 2017 - 2017 IEEE/SICE International Symposium on System Integration. Institute of Electrical and Electronics Engineers Inc. 2018. p. 89-94. (SII 2017 - 2017 IEEE/SICE International Symposium on System Integration). https://doi.org/10.1109/SII.2017.8279194