介绍了热芯盒射砂口衬套、上顶芯杆、下顶芯杆、插入式射砂嘴等几种附件的传统型式及其安装结构存在的不足,并针对这几种热芯盒附件着重提出了其本身结构及其安装结构的优化设计方法或优先选用结构。 Introduced the hot core box sand injection mouth bushing, the top of the core rod, the top of the core rod, insert the type of nozzle and other accessories of the traditional type and the shortcomings of its installation structure, and focus on these types of hot core box attachment Put forward its own structure and its installation structure of the optimal design method or the preferred structure.