| Summary: | 碩士 === 國立虎尾科技大學 === 機械設計工程研究所 === 101 === This stage Fragment plastic Optoelectronics industry. Applied Optics plastic materials account for a large ratio. Their broad range of applications. Example projectors, digital cameras and camera phone. While product design smaller, product launch time getting shorter so that surface of the optical lens design and surface contour accuracy yields are also more stringent.
This study investigated the injection molding of plastic optical lens surface of contouring accuracy parameter conditions for the impact:(1) The experimental selection of materials for the production of Zeon Zeonex E48R.(2) measurement method using a surface profilometer measurement of plastic optical lens surface accuracy.(3)Taguchi method to optimized parameters of the experiment as a framework, the ideal target for the smaller-the-best, and the use of computer-aided analysis software Moldex 3D to help understand changes in the mold.
Taguchi experimental results show that the mold temperature is the most influential control factor. The optimum process parameters so that the lens surface contour accuracy improved (Example: R2 plane Y-axis surface contour accuracy improvement caused from 0.40μm 0.25μm). Then after optimization experiments value and predicted values for confirmation experiment, the actual error are less than the allowable error value (Example: R2 plane Y-axis of the actual error value 0.94< tolerance value 1.06), so be sure to experiment credible. After further analysis using Moldex3d reasons, found the mold temperature is low, causing the gate a short curing time packing pressure can not be delivered, resulting in surface contour accuracy is poor.
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