超薄塑料包装盒注塑模具设计与注塑过程控制

摘要

冷热交替循环系统是高精密度超薄塑料包装盒热流道注塑技术的关键技术,是把加热、高温保温、低温冷却三种换热流程置于同一注塑工艺系统内的流体系统,实现快速准确而又均匀传热.研究表明,模具设计的关键是系统各管道应具有相同的传热效率.在模具结构、冷热交替循环系统和传热介质确定的情况下,最佳水流速度只与塑料种类有关,注塑过程温度的控制可以转化为冷热交替循环流体系统水流速度的控制.%The cool-hot alternation cycle system is a key technique of hot flow injection molding of high accuracy super-thin plastic packing box, it is heat, heat preservation, low temperature cooling 3 kinds to change hot the process place in same molding inside system of hydro-system, realization fast accurate and e-quality transmit heat. Research enunciation, each piping of system should have homology of transmit heat an efficiency in mould design. The best current rate relate to plastics category,after the mould structure and cool -hot alternation cycle system and transmit heat medium establish, the molding temperature control can translate into control current rate of cool-hot alternation cycle system.