机械5

汽车配件-LP1807上壳塑料成型模具设计 摘要 塑料注射模具是成型塑料的一种重要工艺装备，通过对汽车配件-LP1807上壳塑料模具设计,能够全面的了解塑料模具设计的基本原则、方法.并能较为熟练的使用UG、AUTOCAD软件进行塑料模具设计,提高自己的绘图能力。为今后从事设计工作打下了坚实的基矗 随着现代工业发展的需要，塑料制品在工业、农业、日常生活和军事等各个领域的应用范围越来越广，质量要求也越来越高，中国已经成为全球最大的塑料市场之一，塑料制品产量全球第二。 本次主要设计是对汽车配件-LP1807上壳注射模的设计,重点对塑件的成型原理、原料选用和注射技术进行分析。通过根据形状、尺寸、精度及表面质量要求的分析结果，确定所需的模塑成型方案，制品的后加工、分型面的选择、型腔的数目和排列、成型零件的结构、浇注系统等，本套设计中，有一个斜孔，需要抽芯机构才能完成塑件的成型，且抽芯行程较长，所以采用了液压油缸斜抽芯。 关键词：工艺方案；模具结构；注塑机；模具设计 Abstract Plastic i
njectio
n mold is a
n importa
nt process equipme
nt for moldi
ng plastics. Through the desig
n of the plastic mold for the automobile parts-LP1807, the basic pri
nciples a
nd methods of the plastic mold desig
n ca
n be fully u
nderstood. A
nd the desig
n of plastic mould ca
n be used by UG a
nd AUTOCAD software more skillfully, a
nd the drawi
ng ability of the plastic mould ca
n be improved. Thiswill lay a solid fou
ndatio
n for future desig
nwork. With the developme
nt of moder
n i
ndustry, the applicatio
n of plastic products i
nvarious fields, such as i
ndustry, agriculture, daily life a
nd military, is becomi
ng more a
nd morewide, a
nd the quality requireme
nts are becomi
ng higher a
nd higher. Chi
na has become o
ne of the largest plastic markets i
n theworld, a
nd the output of plastic products is seco
nd. The mai
n desig
n of this paper is the i
njectio
n mold for the upper shell of automobile parts- LP1807, focusi
ng o
n the a
nalysis of the moldi
ng pri
nciple of plastic parts, the selectio
n of raw materials a
nd i
njectio
n tech
nology. Through the a
nalysis results accordi
ng to the requireme
nts of shape, size, precisio
n a
nd surface quality, the required moldi
ng scheme, the post processi
ng of the products, the selectio
n of the parti
ng surface, the
number a
nd arra
ngeme
nt of the cavity, the structure of the moldi
ng parts, the casti
ng system a
nd so o
n. I
n this desig
n, there is a
n i
ncli
ned hole,which requires the core pulli
ng mecha
nism to complete the plastic parts. A
nd the core pulli
ng stroke is lo
nger, so the diago
nal core pulli
ng of the hydraulic cyli
nder is adopted. Keywords process pla
n; mold structure; i
njectio
n moldi
ng machi
ne; mold desig
n 目录 摘要1 Abstract 2 前言5 1.概述5 2.国内研究现状5 3.国外研究现状6 第一章材料与塑件分析7 1.1塑件分析7 1.2塑件材料分析8 第二章选择塑件的分型面11 第三章标准件的选择12 3.1标准件的选择12 3.2标准模架的选取12 3.3标准紧固件的选用12 第四章注塑机的选用13 4.1注塑机的概述13 4.2注射机的选择15 4.3注塑机的参数校核16 4.3.1最大注塑量校核16 4.3.2注射压力校核. 16 4.3.3锁（合）模力校核17 4.3.4模具安装尺寸的校核18 4.3.5开模行程的校核18 第五章浇注系统的设计19 5.1概述19 5.2流道设计19 5.2.1主流道设计19 5.2.2分流道设计21 5.3浇口设计23 第六章冷却系统的设计24 6.1冷却时间计算24 6.2冷却参数计算25 6.3冷却回路的设计27 6.4排气系统的设计28 第七章顶出、导向以及机构的设计29 7.1顶出机构的分类29 7.1.1顶出机构的设计原则29 7.1.2顶出机构的基本形式29 7.2导向机构的设计30 7.2.1导柱和导套的设计30 7.2.2导柱和导套在模板上的布置32 7.3复位机构的设计32 7.3.1复位杆复位32 7.3.2弹簧复位和顶杆兼作复位33 第八章成型零件的设计34 8.1凹模的设计34 8.2凸模的设计35 8.3滑块机构的设计36 第九章模具设计总图39 9.1模具动作过程39 9.2模具图的绘制40 设计总结42 参考文献43 致谢44