带混合器支架的塑料管材挤出机头设计  

Design of plastic pipe extruder head with mixer bracket

作　　者：张友新 冯金茂 ZHANG You-xin;FENG Jin-mao(Zhejiang Weixing New Building Materials Co.,Ltd.,Linhai,Zhejiang 317000,China)

机构地区：[1]浙江伟星新型建材股份有限公司,浙江临海317000

出　　处：《模具工业》2021年第10期52-55,共4页Die & Mould Industry

摘　　要：介绍了带混合器支架的塑料管材挤出机头结构设计,为了消除机头内支架分流筋产生的熔接痕,设计了带有菱形螺旋条和圆形流道的网格支架板集成的混合器支架,使熔料通过时进行交错、剪切、混合和缓冲,最终消除熔接痕,提高管材的综合性能;为了减轻模具质量,将分流器和芯棒连接套设计为中空结构,缩短了机头的加热和冷却时间。通过实践表明:带混合器支架的挤出塑料管材机头结构设计合理,使挤出的熔料流动性更稳定、塑化性能好、表面光泽好,减轻了模具质量,机头拆装快捷方便。The structure design of a plastic pipe extruder head with mixer bracket was introduced.In order to eliminate the weld mark caused by the shunting rib of the bracket in the extruder head,a mixer bracket with grid bracket plate integrated with diamond spiral strip and circular runner was designed to make the material interleave,shear,mix and buffer,and finally to eliminate the weld mark and improve the comprehensive performance of the pipe.In order to reduce the weight of the mould,the shunt and mandrel connecting sleeve were designed with hollow structure,which shortened the heating and cooling time of the extruder head.The practice showed that the structure design of the plastic pipe extruder head with mixer support was reasonable,which made the extruded material flow more stable,made the plasticizing performance good,and made the surface gloss better,the mould was lightened,and the disassembly and assembly of the head was quick and convenient.

关 键 词：混合器支架 网格支架板 熔接痕 中空分流器 中空芯棒 

分 类 号：TG76[金属学及工艺—刀具与模具] TQ320.5[化学工程—合成树脂塑料工业]