Characterisation of demoulding parameters in micro-injection moulding
Characterisation of demoulding parameters in micro-injection moulding
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DOI：
10.1007/s00542-014-2269-6
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发表时间：
2015-08-01
影响因子：
2.1
通讯作者：
Whiteside, B.
中科院分区：
文献类型：
--
作者：
Griffiths, C. A.;Tosello, G.;Whiteside, B.
微注射成型的状态监测是了解可变参数设置的加工效果的有效方法。本文报道了一项实验研究，该研究调查了微注射成型（A mu-IM）中脱模行为的特征，重点关注影响零件质量的工艺因素。使用环烯烃共聚物 (COC) 微流体演示器，采用实验方法设计，研究了脱模性能作为四个工艺参数（熔体温度、模具温度、保压压力和注射速度）的函数。结果提供了加工参数对 A mu-IM 脱模条件影响的经验证据，并确定了可用于实现微型零件脱模行为的最佳加工条件的参数组合。结论是，零件填充、保压阶段施加的压力与A mu-IM循环的脱模特征因素（例如顶出力、积分和时间）之间存在直接相关性。
Condition monitoring of micro injection moulding is an effective way of understanding the processing effects of variable parameter settings. This paper reports an experimental study that investigates the characteristics of the demoulding behaviour in micro injection moulding (A mu-IM) with a focus on the process factors that affect parts' quality. Using a Cyclic Olefin Copolyme (COC) microfluidics demonstrator, the demoulding performance was studied as a function of four process parameters (melt temperature, mould temperature, holding pressure and injection speed), employing the design of experiment approach. The results provide empirical evidences on the effect that processing parameters have on demoulding conditions in A mu-IM, and identifies combinations of parameters that can be used to achieve the optimal processing conditions in regards to demoulding behaviour of micro parts. It was concluded that there was a direct correlation between the applied pressure during part filling, holding phases and the demoulding characteristic factors of the A mu-IM cycle such as ejection force, integral and time.