机械5

基于热流道技术的矿泉水瓶盖注射模设计 摘要 本文是关于瓶盖注塑模具的设计，针对的主要是模具成型中的自动脱螺纹方法。在正确分析塑件工艺特点和材料的性能的基础上，介绍了对螺纹型芯，凹模，浇注系统，脱模机构，选择标准零件，设计非标件的设计过程。涉及模具结构，强度和寿命计算熔融塑料复杂的工程计算问题，如模具流量预测；运用了（CAD）、辅助制造（CAM）、辅助工程（CAE）等各种的软件一一对模具的设计、制造和产物的质量进行分析。瓶盖注塑模具设计，应用一般精度，采用CAD、CAE、CAM来设计或分析注射模的成型零部件，浇注系统，导向部件和脱模机构等等。综合运用了专业基储专业课知识设计，其核心知识是塑料成型模具、材料成型技术基储机械设计、塑料成型工艺、计算机辅助设计、模具CADCAMCAE等。 关键词：瓶盖；脱螺纹；熔融塑料；螺纹型芯；脱模机构。 Abstract This paper is about the desig
n of the i
njectio
n mold for the bottle cap. It mai
nly focuses o
n the automatic thread removal method i
n the mold formi
ng. Based o
n the correct a
nalysis of the tech
nological characteristics a
nd material properties of plastic parts, the desig
n process of screw core, die, pouri
ng system, demouldi
ng mecha
nism, selectio
n of sta
ndard parts a
nd desig
n of
no
n-sta
ndard parts are i
ntroduced. Complicated e
ngi
neeri
ng calculatio
n problems i
nvolvi
ng mold structure, stre
ngth a
nd life calculatio
n of molte
n plastics, such as mold flow predictio
n, are a
nalyzed o
ne by o
newithvarious softwares such as(CAD), auxiliary ma
nufacturi
ng(CAM) a
nd auxiliary e
ngi
neeri
ng(CAE). I
n the desig
n of i
njectio
n mold for bottle cap, the ge
neral precisio
n is applied, a
nd CAD, CAE a
nd CAM are used to desig
n or a
nalyze the moldi
ng parts, gati
ng system, guidi
ng parts a
nd demouldi
ng mecha
nism of i
njectio
n mold. The core k
nowledge is plastic moldi
ng mold, material formi
ng tech
nology fou
ndatio
n, mecha
nical desig
n, plastic formi
ng process, computer aided desig
n, mold CAD CAM CAE a
nd so o
n. Keywords: bottle cap; thread removal; molte
n plastic; threaded core; ejectio
n mecha
nism. 目录 前言5 1塑料制件的分析7 1.1成型塑料件的工艺性分析7 1.2成型塑件的材料分析8 2.塑件成型的基本过程以及模拟分析11 2.1塑件成型过程11 2.2 moldflow分析12 2.2.1产品网格划分12 2.2.2型腔布局13 2.2.3浇口流道设计13 2.2.4冷却系统设计14 2.2.5模拟分析结果15 3注塑设备的选择18 3.1估算塑件体积质量18 3.2注塑机的选择18 4.成型零件有关尺寸的计算20 5.确定模具类型24 5.1参考方案24 5.2方案的确定24 5.3型腔数目的确定24 5.4热流道浇口设计25 6合模导向机构的设计27 6.1导柱的设计27 6.2导套的设计28 7脱模结构的设计30 8排气系统和温度调节系统的设计32 8.1排气系统32 8.2温度调节系统的设计32 9绘制装配图及零件明细表34 10注射机的校核36 10.1注射量的校核36 10.2锁模力的校核36 10.3校核注射机安装模具部分的尺寸36 结束语38 致谢39 参考文献40