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多模穴幾何平衡流道設計對成品真圓度的影響

Effects of Geometry-Balanced Runners on Roundness of Product in Multi-Cavity

摘要


本論文是藉由Moldex3D模流分析軟體,於射出成型的過程,探討多模穴幾何平衡流道與幾何不平衡流道的設計,對產品真圓度的影響。研究中,採用均勻厚度的針筒,由於針筒爲狹長形同心圓產品,在局部收縮不均的翹曲情況,對真圓度造成影響。本研究先利用Moldex3D對幾何不平衡流道設計做分析,找出良好的加工參數,再以相同的加工參數,對兩組配置方式不同的幾何平衡流道設計分析。比較三種的翹曲變形及對產品真圓度的影響。 結果發現,幾何流道平衡的設計較幾何不平衡的流道設計,收縮、翹曲均小,且真圓度較佳。而同爲幾何平衡的流道設計,流道配置均勻有較好的均衡流動的設計,也有真圓度較佳的結果。

並列摘要


In the present paper, the computational software of Moldex3D was employed to analyze and compare the effect of geometrically imbalanced and balanced runners on the shape of roundness of the product in multi-cavity during the injection process. This study proposed a geometrically imbalanced and two geometrically balanced runner systems of injector with uniform thickness and narrow concentric circles. The roundness of injector is mainly formed by the local unevenness of shrinkage and warpage with non-symmetrical temperature and shear rate. According to the analyses, the shrinkage, warpage and roundness on geometrically balance runners had better effects than those on geometrically imbalance runners. Further, for the case of geometry-balances runners with uniform allocation, could yield smaller warpage and better roundness.

並列關鍵字

geometry-balances runners roundness

參考文獻


科盛科技股份有限公司(2007)。Moldex3D 模流分析技術與應用。全華圖書。
張榮語(1998)。射出成型模具設計-模具設計。高立圖書。
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許嘉翔、楊文禮、張榮語、楊文賢()。
科盛科技股份有限公司(2002)。CAE 模流分析技術入門與應用_一天學會Moldex3D模流分析軟體。全華科技圖書。

被引用紀錄


吳明信(2015)。射出成型參數與纖維含量對製品真圓度影響之研究〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201500795

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