CAJ | 학술논문

为解决在注塑成型过程中微结构特征难以精确复制的问题，搭建了一套电热式变模温注塑成型系统。该系统采用高功率密度电热棒加热，低温水冷却，并利用压缩空气吹气排水以提高加热效率。该系统各部分动作由外设可编程控制器PLC控制，并与注射机内部控制器的信号互锁。以典型微结构塑件——微流控芯片为例，研究了变模温注塑成型对微结构复制度的影响。结果表明，与传统油加热模具相比，该系统在优化成型工艺参数条件下，可以明显改善芯片微结构复制度，复制度接近100%，并呈现出很好的宏观表面质量。
위해결재주소성형과정중미결구특정난이정학복제적문제，탑건료일투전열식변모온주소성형계통。해계통채용고공솔밀도전열봉가열，저온수냉각，병이용압축공기취기배수이제고가열효솔。해계통각부분동작유외설가편정공제기PLC공제，병여주사궤내부공제기적신호호쇄。이전형미결구소건——미류공심편위례，연구료변모온주소성형대미결구복제도적영향。결과표명，여전통유가열모구상비，해계통재우화성형공예삼수조건하，가이명현개선심편미결구복제도，복제도접근100%，병정현출흔호적굉관표면질량。
To achieve exact replication of micro-structure features during injection molding,an electrothermic vario-therm injection molding system was established. The system was heated by electric heating rods with high power den-sity and cooled by low temperature water. To increase heating efficiency,compressed air was used to blow-dry the cooling pipes. The system action was controlled by peripheral programmable controller PLC and interlocked with the internal controller signal of the injection machine. The effects of the electrothermic variotherm injection molding sys-tem on the microstructure replication fidelity were investigated , with the typical microstructure plastic part(microfluidic chip)as an example. The results show that,compared with traditional heating-oil mold,this sys-tem can significantly improve the microstructure replication fidelity of the chip to nearly 100%under optimized mold-ing parameters,and the chip shows high macro surface quality.