机械5

摘要 本次设计的是江淮客车6668G座椅后护罩的注塑模具。所用材料是当前应用较为广泛的材料ABS。在设计中，分析塑件的工艺性。模具结构可采用一模两腔，侧浇口进料，注射机采用HTF80XA型号，并对其相关的数据进行校核。首先根据UG软件设计出分型面，进而设计出型腔、型芯及斜导柱滑块抽芯机构，通过各种手册选择标准模架的绘制，并且进行浇注系统、脱模机构、冷却系统等模具重要结构的设计。最后对设计过程中的相关零部件进行了计算和校核，在无误的基础上进行了模具总装，并利用AUTOCAD软件绘制出总装及各主要零件的二维工程图，设计出一套塑料注塑模具 此次设计的过程中查阅了大量的模具设计资料，通过江淮客车6668G座椅后护罩塑料模具的设计与应用，实现了江淮客车6668G座椅后护罩制作工艺上的突破，同原有的设计方法相比，模具的应用不但提高了生产效率而且提升了产品的质量，模具整体设计的思路和要求符合现代设计潮流和未来的发展方向 关键词：座椅后护罩；一模两腔；侧浇口；冷却系统；注塑模具 Abstract This desig
n is the i
njectio
n mould for the back cover of 6668G seat of Jia
nghuai Bus. The material used is ABSwhich iswidely used at prese
nt. I
n the desig
n, the tech
nological properties of plastic parts are a
nalyzed. The mold structure ca
n be usedwith o
ne mold a
nd two cavities, side gate feed, i
njectio
n machi
ne adopts HTF80XA model, a
nd check the releva
nt data. Firstly, the parti
ng surface is desig
ned accordi
ng to UG software, a
nd the
n the core-pulli
ng mecha
nism of cavity, core a
nd i
ncli
ned guide pillar slider is desig
ned. The drawi
ng of sta
ndard die frame is selected throughvarious ma
nuals, a
nd the desig
n of importa
nt die structures such as pouri
ng system, demouldi
ng mecha
nism a
nd cooli
ng system is carried out. Fi
nally, the releva
nt parts i
n the desig
n process are calculated a
nd checked, a
nd the die assembly is carried out o
n the basis of correct
ness. The two-dime
nsio
nal e
ngi
neeri
ng drawi
ngs of the assembly a
nd the mai
n parts are draw
n by AUTOCAD software, a
nd a set of plastic i
njectio
n mould is desig
ned. The desig
n process co
nsulted a large
number of mold desig
n i
nformatio
n, through the desig
n a
nd applicatio
n of the plastic mold for the 6668G seat back shield of Jia
nghuai Bus, a breakthrough i
n the ma
nufacturi
ng process of the 6668G seat back shield of Jia
nghuai Buswas achieved. Comparedwith the origi
nal desig
n method, the applicatio
n of the mold
not o
nly improved the productio
n efficie
ncy, but also improved the quality of the product, a
nd the idea a
nd requireme
nts of the overall desig
n of the moldwere met. Co
nsiste
ntwith Moder
n Desig
n Tre
nd a
nd Future Developme
nt Directio
n Keywords: seat rear cover; o
ne mold two cavity; side gate; cooli
ng system; i
njectio
n mold 目录 摘要I Abstract II 1绪论1 1.1塑料简介1 1.2注塑成型及注塑模1 2塑件结构分析3 2.1塑件的材料选择4 2.2塑件的结构和尺寸精度表面质量分析4 2.2.1塑件的结构设计4 2.2.2塑件尺寸及精度4 2.2.3塑件表面粗糙度5 2.3计算塑件的体积、质量5 3塑件成型方案设计6 3.1分型面选择6 3.2型腔数的确定6 3.3型腔布局7 3.4浇注系统的类型和位置的选择7 3.5成型零件结构设计8 3.5.1型腔设计8 3.5.2型芯设计9 3.6脱模机构的设计11 3.6.1脱模机构的选用原则： 11 3.6.2推杆和扁顶杆推出机构设计11 3.6.3脱模力的计算12 3.7导向与定位机构设计13 3.8排气及引气系统的设计14 3.9模温调节系统的设计14 3.10侧向抽芯机构类型选择16 3.11模架选用18 3.12注塑模具的工作原理20 4模具零件设计21 4.1模具成型零件尺寸计算21 4.2模具强度与刚度校核21 4.3浇注系统的设计22 4.3.1主流道的设计22 4.3.2分主流道的设计23 4.3.3浇口的设计24 4.4模具冷却系统的设计24 5注射机的选用及相关参数的校核25 5.1相关参数25 5.2最大注塑量校核26 5.3锁模力校核27 5.4模具与注塑机安装部分相关尺寸校核27 5.5开模行程校核28 第6章Moldflow的注塑模拟成型分析29 6.1模型网格划分及修复29 6.2浇注方案的选择31 6.3充填时间分析32 6.4流动前沿温度分析33 6.5顶出时体积收缩率34 6.6锁模力的分析35 6.7冻结层因子分析36 6.8熔接痕分析37 6.9变形量分析38 6.10温度、零件39 总结40 致谢41 参考文献42