机械5

动片瓷件塑料成型工艺及注塑模具设计【注射模】 摘要：系统介绍了塑件的成形工艺及模具成型结构对塑件质量的影响分析，浇注系统的设计，模具成型部分和总装结构的设计。介绍了端盖注塑模具设计时要注意的要点，并较多的考虑了模具结构的调整性、易更换性及模具成本。从控制制件尺寸精度出发，对端盖注塑模的各主要尺寸进行了理论计算，以确定各工作零件的尺寸，从模具设计到零部件的加工工艺以及装配工艺等进行详细的阐述，并应用CAD进行各重要零件的设计。 关键词：工艺分析；塑件成型；浇注系统；模具结构。 Rotor chi
na piece of plastic moldi
ng a
nd processi
ng ha
ndicraft a
nd desig
n for die a
nd mould Abstract：The moldi
ng process of plastic parts, the effect a
nalysis to plastic parts quality caused by moldi
ng structure, aswell as the casti
ng system desig
n, partial a
nd ge
neral desig
n of mold mouldi
ng i
ntroduced respectively. The critical poi
nts of mold for plastic desig
n are i
ntroduced, a
nd the adjustable character of moldi
ng structure、excha
nge character aswell as the moldi
ng costs are all co
nsidered farther. Starti
ng from co
ntrolli
ng dime
nsio
nal accuracy, the carry the cover to the mai
n dime
nsio
ns of i
njectio
n moldi
ng are carried out so as to determi
ne the size of differe
nt parts, the moldi
ng desig
n a
nd the process of parts aswell as assembli
ng process a
nd etc of i
njectio
n moldi
ng are stated i
n details. Keywords: process a
nalysis; plastic parts mouldi
ng; casti
ng system; moldi
ng structure. 目录 1绪论………………………………………………………………………………1 1.1国内模具的现状和发展趋势…………………………………………………1 1.1.1国内模具的现状………………………………………………………………1 1.1.2国外模具的发展趋势…………………………………………………………2 1.2国外模具的现状和发展趋势………………………………………………3 1.3动片瓷件注塑模具设计与制造方面……………………………………………3 1.3.1动片瓷件注塑模具设计的设计思路…………………………………………3 1.3.2动片瓷件注塑模具设计的进度……………………………………………4 2模塑工艺规程的编制……………………………………………………………5 2.1塑件的工艺性分析………………………………………………………………5 2.1.1塑件的原材料分析……………………………………………………………5 2.2.1塑件的结构和尺寸精度及表面质量分析……………………………………5 2.3计算塑件的体积和质量………………………………………………………5 2.4塑件注塑工艺的确定…………………………………………………………6 2.5塑料成型设备的选拳………………………………………………………7 3注塑模的结构设计………………………………………………………………8 3.1分型面选择……………………………………………………………………8 3.2确定型腔的数目及排列方式…………………………………………………8 3.2.1按注射机的额定锁模力确定型腔数量N1……………………………………8 3.2.2注射机注塑量确定型腔数目N2………………………………………………9 3.2.3型腔的排列方式………………………………………………………………9 3.3浇注系统设计…………………………………………………………………10 3.3.1主流道设计……………………………………………………………………10 3.3.2分流道设计……………………………………………………………………10 3.3.3浇口设计………………………………………………………………………11 3.3.4排气结构的设计………………………………………………………………11 3.3.5主流道衬套的选拳…………………………………………………………11 3.4推出机构设计…………………………………………………………………11 3.5成型零件结构设计……………………………………………………………12 3.5.1型腔的设计……………………………………………………………………12 3.5.2型芯的设计……………………………………………………………………14 4模具的有关计算…………………………………………………………………16 5模具加热和冷却系统的设计……………………………………………………17 6模具闭合高度确定………………………………………………………………18 7注塑机有关参数的校核…………………………………………………………19 8绘制模具总装图和非标零件工作图……………………………………………20 8.1本模具总装图和非标零件工作图见附图……………………………………20 8.2本模具的工作原理……………………………………………………………20 总结……………………………………………………………………………………21 致谢……………………………………………………………………………………22 参考文献………………………………………………………………………………23