人工智慧在射出成型之應用
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■高雄科技大學/ 黃明賢 特聘教授
前言
射出成型背景知識
射出成型生產技術乃首先將粒狀的高分子原料先加熱塑化至熔融狀態,續以外力射入模穴內冷卻成型。由于產品質量受熔膠質量影響甚大,其中代表熔膠流動難易程度的指標以黏度(Viscosity)最為關鍵。低黏度容易充填;高黏度需要較大的壓力才能充填滿模穴,否則容易出現短射或尺寸不足等質量缺陷。所以熔膠黏度可以作為成型質量好壞的重要指針,但容易受眾多因子影響。
圖1:影響熔膠質量的因素
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塑化參數:料管溫度、背壓壓力、螺桿轉速、計量時間、螺桿幾何; -
機臺特性:穩定性、精密度、重現性、控制法則、機臺剛性、機臺響應; -
原料性質:流變性、批次、濕度、溫度; -
成型參數:射出壓力/速度、保壓壓力/時間、V/P切換時機。
由于成型質量易受制程參數的變動所影響,所以適當的參數設定與制程監控對維持制程穩定很重要。
表1:射出成型控制參數階層表
圖2:熔膠在不同位置下的壓力[1]
表2:使用傳感器進行熔膠質量及成品質量的監測研究
射出成型4.0
人工智能與射出成型
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