• CN:11-2187/TH
  • ISSN:0577-6686

›› 2007, Vol. 43 ›› Issue (10): 187-190.

• 论文 • 上一篇    下一篇

具有独立温控单元的模具温控凝固成形装置的研制

游东东;邵明;周照耀;叶宏克   

  1. 华南理工大学机械工程学院
  • 发布日期:2007-10-15

DEVELOPMENT OF THE MOLD-TEMPERATURE-CONTROL SOLIDIFICATION DEVICE WITH INDIVIDUAL TEMPERATURE CONTROL UNITS

YOU Dongdong;SHAO Ming;ZHOU Zhaoyao;YE Hongke   

  1. School of Mechanical Engineering, South China University of Technology
  • Published:2007-10-15

摘要: 为深入研究模具温控凝固成形工艺,研制出一种柱状件成形的试验装置,包括成形模具和温度测控系统。设计独立的加热及冷却温控单元各8组,均匀分布在模具中,加热单元采用16根远红外加热管,模具冷却采用冷却水管道强迫对流方式进行,模壁内的冷却管道通过机加工完成。使用8个位于模具不同位置的热电偶检测成形过程中熔体的实时温度,系统根据数据采集模块采集到的温度数据,输出控制信号分别控制各加热及冷却单元的通断,从而实现模具温度的自动控制。流程控制通过基于工控组态软件MCGS开发的应用系统实现,可进行整个过程的温度数值、曲线显示及报警、循环策略控制。数值模拟与成形试验的结果表明,计算值与试验值之间的误差基本在8%以下,零件内部成形质量较好,无缩孔等缺陷。

关键词: 成形装置, 独立温控单元, 模具温控凝固成形

Abstract: An experimental device is developed for studying mold-temperature-control solidification (MTCS) process. The device includes the mold and temperature measure & control system. In the mold, eight groups of individual heating and cooling units are distributed in proportional spacing. The mold is heated by 16 far-infrared heating pipes and mold cooling are processed by forced convection of the coolant in the machined channels. Eight thermocouples are used to measure the transient temperature of the melt on different positions. According to the temperature data obtained by data collection module, the output control module signals to open or close the heating and cooling units. Thus the mold temperature can be automatically controlled. The flow control is implemented by developing the application based on the MCGS configuration software. The MCGS application can show the real-time and history graphs of the control points temperature and control the system by warning and cyclic strategies. The results of numerical simulation and experiment indicate that the product has no defects like shrinkage cavities and the relative errors between the numerical and experimental data are less than 8 percent.

Key words: Forming device, Individual temperature control units, Mold-temperature-control solidification(MTCS)

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