快速热循环注塑技术的研究与应用  

Research and application of rapid heating cycle molding technology

作　　者：赵国群[1] 王桂龙[1] 李辉平[1] 管延锦[1] 

机构地区：[1]山东大学模具工程技术研究中心,济南250061

出　　处：《塑性工程学报》2009年第1期190-195,共6页Journal of Plasticity Engineering

基　　金："十一五"国家科技支撑计划项目(2006BAF02A05)

摘　　要：研究了一种新颖的快速热循环(高光无熔痕)注塑过程的工艺原理,建立了高光无熔痕注塑工艺流程;提出了一种利用蒸汽加热、冷凝水冷却的模具温度动态控制方法,自主研制了以PLC为控制核心的温度控制系统,并开发了相应的控制软件,实现了注塑模具温度的快速准确实时控制;利用人机界面技术,实现了注塑工艺全过程的实时监控,可保障生产系统的稳定性、可靠性和易操作性;建立了高光无熔痕绿色注塑生产线,实现了大型液晶平板电视机面板的绿色注塑生产,塑件表面无熔痕、流痕、凹陷等缺陷,达到镜面效果,无需环境污染严重的喷涂工艺等二次加工过程。The principle of a new injection molding technology named as rapid heating cycle （RHCM） was studied. The whole flow chart of RHCM injection process was established. A new kind of dynamic control of mold temperature field was proposed by using steam for heating mold and cool water for cooling mold. A dynamic mold temperature control system with PLC as the control center was designed and manufactured independently. The corresponding control software was also developed. The rapid and accurate in-time control of RHCM injection mold temperature was realized. By using human-machine interface techniques, the whole injection process was monitored, and the stability, reliability and easy operation of the whole RHCM injection molding system were ensured. Finally, a RHCM production line for producing a flat panel of LCD TV was successfully built, so that the green injection molding manufacturing process of flat panel of LCD TV was realized. The produced injection molding panel has a high gloss surface without weld mark and flow mark. The realization of RHCM eliminates the spray panting process which causes severe environmental pollution.

关 键 词：快速热循环 蒸汽加热 模温动态控制 高光无熔痕 

分 类 号：TQ320[化学工程—合成树脂塑料工业] TP271[自动化与计算机技术—检测技术与自动化装置]