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  • 學位論文

脈衝式冷卻模溫控制對於藍光光碟片溝 軌翹曲及複製率之影響

Pulsed Cooling Mold Temperature Control on Influence of Groove Duplication Accuracy and warpage of the Blu-Ray Disc.

指導教授 : 陳夏宗

摘要


隨著光電、生醫科技的進步,產品力求輕薄短小,因而衍生出 次世代產業需求之「微系統技術」。微射出成型是生產複雜微小塑 膠、陶瓷零件最有效率的製造方法。為了達到精密成型的要求,在 射出成型製程中,必須藉由升高模具溫度,使塑料在充填階段有更好 的流動性,因此,較長的成型週期將無法避免。快速變溫技術可以控 制成型過程中,在充填保壓階段維持高模溫,待冷卻階段導入冷卻水 快速降低模具溫度,則可減少成型週期且改善成品品質。 本研究是利用脈衝式冷卻模溫技術控制,當模具開、關模時,利 用近接感應器去觸發模溫機的電磁閥導通與閉合,使藍光光碟成型期 間之充填保壓階段維持高模溫,待冷卻階段導入冷卻水快速降低模具 溫度,以減短成型週期且維持產品品質。 實驗結果發現生產週期由原先的11 sec 縮短為10 sec,以Argus blu 測試機測試光碟的物理特性也發現Radial Deviation 由原先0.45° 的變化量降低至0.15°的變化量,結果顯示脈衝式冷卻模溫機比傳統模 溫機所生產出的光碟不但縮短了生產週期外,仍可維持品質的穩定 性。

並列摘要


The Micro-Electro-Mechanical System (MEMS) used for the next generation industry has been developed due to the miniaturization of components and systems demands on advanced technology. Micro-injection molding is the most prominent process for successfully forming microstructures with low cost and high precision. However, raising molding temperature is necessitated when getting better fluidity in the fill-in stage using micro-injection molding in order to achieving the exactness of shape. Because of this high-temperature requirement, the pulsed cooling mold temperature control technology has been provided. Using a hot mold during the filling stage and a cold mold during the cooling stage can thereby improve the quality of molded microstructures and without increasing cycle time. In this study, pulsed cooling mold temperature control technology is used to reduce the shaping cycle time and maintain the quality of the products. The Near-Electromagnetic Value is used for controlling the inductor when injection mold opened and closed could lead the sample of blue ray disc shaped well at high temperature holding pressing stage and at low temperature cooling molding stage. Consequently, it was proved that by using the pulsed cooling mold temperature machine to produce blue ray disc is more choicely than by using the traditional mold machine since the results from the experiments showed that the production cycle time could be decreased from 11 seconds to 10 seconds and the disc radial deviation was reduced from 0.45° to 0.15° evaluated by Argus blue tester.

參考文獻


1 J. Greener, General Consequences of the Packing Phase in Injection
Molding, Poly. Eng. Sci., 26, 12, pp.886 (1986).
Injection/Compression Moulding of Plastics, Kunststoffe, 74, 2 ,pp79
術, National Technical Report, 31, p641(1985).
Molding, ANTEC’93, pp. 2182(1993).

被引用紀錄


董世賢(2009)。脈衝式冷卻系統應用於縮短成型週期與改善產品品質之相關研究〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu200901271
謝昀臻(2008)。脈衝式冷卻之模具溫度週期歷程探討 及模擬驗證〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu200800104

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