摘要
采用微细电火花技术铣削加工了细胞皿模具型腔,以聚丙烯(PP)为例进行了成形工艺数值模拟分析,结果表明,注射速率、模具温度、熔体温度对充模过程影响较大,模具温度需要达到120℃型腔才能充满。提出了油水电相结合的变模温技术,变模温实验结果表明,型腔温度从80℃变化到120℃大约需要6min。填充实验表明,油水电相结合的变模温技术对实现微注塑模具成形过程的变模温是可行的。
Using micro-EDM milling,a three-dimensional mold cavity was machined.The molding process was carried out with polypropylene（PP） by numerical simulation.The results indicate that mold temperature,melt temperature and injection rate play significant role on the filling process.In addition,the simulation shows that the micro cavity can be filled when the mold temperature is up to 120℃.Therefore,variothermal technology with the combination of oil,water and electricity is developed.After testing,variothermal time is about 6 minutes when the cavity temperature is changed from 80℃ to 120℃.After injection experiments,the results explain that the developed variothermal method is feasible to micro injection molding.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2012年第9期1112-1116,共5页
China Mechanical Engineering
基金
"十一五"国家科技支撑计划资助重点项目(2006BAF04B13)
西南科技大学校博士基金资助项目(10zx7143)
关键词
微注塑成形
细胞皿
变模温系统
成形工艺
数值模拟
micro injection molding
cell container
variothermal system
molding process
numerical simulation
