电热式变模温注塑模具热响应辅助分析程序开发

Development on thermal response aided analysis program of electrical rapid heat cycle molding mold

针对快速变模温注塑成型模具热响应分析复杂问题,对电热式变模温注塑模具热响应作了研究,采用随形加热系统设计方法,将复杂的电热式变模温注塑模具简化为单个加热细胞单元,以电热元件的规格和布局为设计变量,以加热时间和型腔表面温差为热响应指标,结合Matlab图形界面开发模块和ANSYS有限元分析软件,开发了基于加热细胞单元的电热式变模温注塑模具热响应辅助分析程序,并对其准确性做了验证分析。研究结果表明,该辅助分析程序可以较好地预测模具的加热效率和型腔表面温度均匀性,可为电热式变模温注塑模具的设计、分析一体化提供一条快捷和高效的途径。

Aiming at the complex thermal response analysis of rapid heat cycle molding （RHCM） mold, the thermal response of electrical rapid heat cycle molding （ERHCM） mold was studied. Based on the method of conformal heating system design, a complex ERHCM mold was simplified as a single heating cell unit for thermal response analysis. Then, combined with matlab graphical interface module and ANSYS software, a thermal response aided analysis program of ERHCM mold based on heating cell units was developed, in which the specifications and layout of electrical heating element were the design variables, the required heating time and cavity surface temperature difference were the thermal response index. Moreover, the accuracy of the program was evaluated. The results indicate that this thermal response aided anal- ysis program can well predict the heating efficiency and cavity surface temperature uniformity and provides a fast and efficient way in the inte- gration of ERHCM mold design and analysis.