机械5

摘要 本次设计的是玩具汽车引擎盖盖板支架的注塑模具。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HTF 80XA型号，并对其相关的数据进行校核。选用斜导柱滑块侧抽芯机构。首先根据三维软件设计出分型面，进而设计出型腔、型芯，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CAD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，通过玩具汽车引擎盖盖板支架塑料模具的设计与应用，实现了玩具汽车引擎盖盖板支架制作工艺上的突破，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：引擎盖盖板支架；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 cover plate bracket of toy car e
ngi
ne. 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, the side gate feed, the i
njectio
n machi
ne adopts the HTF 80XA model, a
nd the releva
nt data are checked. The side core pulli
ng mecha
nism of sliderwith i
ncli
ned guide pillar is selected. Firstly, accordi
ng to the three-dime
nsio
nal software, the parti
ng surface is desig
ned, a
nd the
n the cavity a
nd core are desig
ned. Throughvarious ma
nuals, the drawi
ng of sta
ndard die base is selected, a
nd the importa
nt structure of the casti
ng system, demouldi
ng mecha
nism a
nd cooli
ng system are desig
ned. 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 CAD software, a
nd a set of plastic i
njectio
n mould is desig
ned. The desig
n process co
nsulted a large
number of die desig
n i
nformatio
n, through the desig
n a
nd applicatio
n of plastic die for toy car hood bracket, achieved a breakthrough i
n the ma
nufacturi
ng process of toy car hood bracket. Comparedwith the origi
nal desig
n method, the applicatio
n of die
not o
nly improves the productio
n efficie
ncy, but also improves the quality of products, a
nd the ideas a
nd requireme
nts of overall die desig
n. I
n li
newith the tre
nd of moder
n desig
n a
nd the future directio
n of developme
nt Keywords: hood cover support; 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前言1 1.2模具发展现状及发展方向1 1.2.1国内外注塑模具的发展现状1 1.2.2国内外注塑模具的发展趋向3 2塑件结构分析4 2.1塑件材料的选择及成型性能分析5 2.2塑件的结构和尺寸精度表面质量分析6 2.2.1塑件的结构设计6 2.2.2塑件尺寸及精度6 2.2.3塑件表面粗糙度6 2.3计算塑件的体积、质量7 3塑件成型方案设计8 3.1分型面选择8 3.2型腔数的确定8 3.3型腔布局9 3.4浇注系统的类型和位置的选择9 3.5成型零件结构设计10 3.5.1型腔设计10 3.5.2型芯设计12 3.6脱模机构的设计13 3.6.1脱模机构的选用原则： 13 3.6.2推杆和扁顶杆推出机构设计13 3.6.3脱模力的计算14 3.7导向与定位机构设计15 3.8排气及引气系统的设计17 3.9模温调节系统的设计17 3.10侧向抽芯机构类型选择与设计19 3.10.1侧向抽芯机构类型19 3.10.2侧向抽芯机构主要参数的确定21 3.11模架选用23 3.12注塑模具的工作原理24 4模具零件设计26 4.1模具成型零件尺寸计算26 4.2模具强度与刚度校核26 4.3浇注系统的设计27 4.3.1主流道的设计27 4.3.2分主流道的设计28 4.3.3浇口的设计28 4.4模具冷却系统的设计29 5注射机的选用及相关参数的校核30 5.1相关参数30 5.2最大注塑量校核31 5.3锁模力校核32 5.4模具与注塑机安装部分相关尺寸校核32 5.5开模行程校核33 第6章模具材料的选用34 6．1成型零件材料选用34 6．2注射模用钢种34 总结35 致谢36 参考文献37