机械5

轴承保持架注塑模具设计 摘要 这次设计的课题对一个塑件制品，名称为轴承保持架，在三维方面是基于UG三维建模软件对轴承保持架塑件塑料件进行三维软件建模，并需要完成对这个该塑料件的原始结构分析，通过分板及了解可以知道的情况这个塑件内部结构及塑件外形相对比较简单，整体形状比较规则，壁厚平均分布相对合理。在通过充分考虑模具尺寸大小与生产效益等多方面因素后，本次设计拟定采用一模一腔的型腔分布，在浇注方面采用了侧浇口进料的大水口模架系统模架。注塑模具是一种以特定的型腔、型芯等结构形式让塑胶原料成型的一种新型生产工业，在模具设计前需要通对塑料件的材料选择以及成型工艺进行分析和注塑成型机的确定，所以本次模具设计选择了比较合适的注塑成型机并对注塑机多个重要参数进行了校核与计算。并对塑料模的塑件分模面进行选择设计。经过多种数据的比较与分析等，从而综合各种因素选择一个最合理的方案。 并将模具所有零件及装配图绘制成CAD电子图档，通过计算机辅助设计软件CAD图的绘画，并对塑件的各机构及模架进行了设计绘画，并绘制转化二维装配图及主要的零件图。然后对模具的各种重要的参数进行了一系统的设计与校核，从而完成整个设计。 关键词:校核；注塑模具；模设计；塑料成型； Abstract The topic of this graduatio
n project is a plastic part,
named beari
ng cage. I
n the three-dime
nsio
nal aspect, it is based o
n the UG three-dime
nsio
nal modeli
ng software to carry o
n the three-dime
nsio
nal software modeli
ng for the plastic part of the beari
ng cage, a
nd
needs to complete the origi
nal structure a
nalysis of the plastic part. Through the plate divisio
n a
nd u
ndersta
ndi
ng, we ca
n k
now the situatio
n. The i
nter
nal structure a
nd shape of the plastic part are relatively simple, a
nd the whole process is relatively simple The average distributio
n of wall thick
ness is relatively reaso
nable. After fully co
nsideri
ng the mold size a
nd productio
n efficie
ncy a
nd other factors, the cavity distributio
n of 1 is proposed i
n this desig
n, a
nd the side gate feedi
ng large
nozzle mold base system mold base is adopted i
n the pouri
ng. I
njectio
n mold is a
new type of productio
n i
ndustry that uses specific cavity, core a
nd other structural forms to make plastic materials moldi
ng. Before the mold desig
n, it is
necessary to a
nalyze the material selectio
n of plastic parts a
nd the moldi
ng process, a
nd determi
ne the i
njectio
n moldi
ng machi
ne. Therefore, this mold desig
n selects a more appropriate i
njectio
n moldi
ng machi
ne, a
nd checks a
nd calculates several importa
nt parameters of the i
njectio
n moldi
ng machi
ne 。 The parti
ng surface of the plastic part is selected a
nd desig
ned. After a variety of data compariso
n a
nd a
nalysis, so as to i
ntegrate various factors to choose the most reaso
nable scheme. All parts a
nd assembly drawi
ngs of the mould are made i
nto CAD electro
nic drawi
ng files. Through the drawi
ng of CAD drawi
ng of CAD software, the mecha
nism a
nd mold base of the plastic parts are desig
ned a
nd draw
n, a
nd the two-dime
nsio
nal assembly drawi
ng a
nd the mai
n part drawi
ng are draw
n. The
n the importa
nt parameters of the mold are desig
ned a
nd checked systematically, so as to complete the whole desig
n. Key words: check; i
njectio
n mold; mold desig
n; plastic moldi
ng 目录 摘要I Abstract II 第1章绪论1 1.1注射模具的简述1 1.2注塑模具的国内外趋势2 第2章塑件成型工艺分析4 2.1分析塑件的结构4 2.2制品的结构分析5 2.3零件的体积与质量计算6 第3章注塑模具的设计8 3.1注塑模具分型面的选择与设计8 3.1.1分型面形式的确定8 3.1.2分型面选择的规则8 3.1.3模具分型面的设计与选择8 3.2模具型腔的排列9 3.3模具浇注系统设计10 3.3.1模具主流道设计10 3.2.2浇注系统相关计算12 3.3.2模具分流道设计12 3.3.3浇口的设计13 3.3.4冷料穴的和拉料杆的设计14 第4章成型零件设计与主要参数校核16 4.1注射机注射量校核16 4.2注射机锁模力校核16 4.3型腔型芯结构设计17 4.3.1型腔型芯的概念17 4.3.2模型腔的形式18 4.4成型零件的尺寸计算与校核19 4.4.1模具型芯尺寸计算20 4.4.2模具型腔尺寸计算21 4.4.3型腔零件的强度刚度校核22 4.5模具排气方式设计23 4.6注塑模具的脱模机构设计23 4.6.1推杆的设计23 4.6.2推杆的计算24 4.6.3推杆强度的校核24 4.7冷却系统的设计25 4.7.1求塑料制品在固化时每小时释放的热量Q 26 4.7.2水的体积流量26 4.8抽芯机构类型的选择27 4.9抽芯机构计算27 4.9.1抽芯机构计算27 4.9.3弯销滑块机构28 第5章模架选择与相关参数校核30 5.1选择模架30 5.2模架尺寸主要参数校核30 5.2.1模架顶出的校核30 5.2.2安装高度尺寸校核31 5.2.3注塑机开模行和的校核31 结论32 致谢33 附录34 参考文献35