【正文】 oduct,the side pulls and demoulding are acplished by use of the arrester,which prevents the side action of cavity splits at from the beginning of mould opening to a certain travel,as well as by use of angle slide ejecting mould is pact in structure,credible in pushout and easy in installing,maintaining and operating,The quality of product is good and the production effciency is high. Key words:pulley。Arrester device XX 大學畢業(yè)設(shè)計 III 目 錄 摘 要 .......................................................................................................................................... 1 Abstract ....................................................................................................................................... 1 第一章 緒論 .............................................................................................................................. 1 模具在加工工業(yè)中的地位 ................................................................................................. 1 模具的發(fā)展趨勢 ................................................................................................................. 1 加深理論研究 .................................................................................................................. 1 高效率、自動化 .............................................................................................................. 2 大型、超小型及高精度 .................................................................................................. 2 革新模具制造工藝 .......................................................................................................... 2 標準化 .............................................................................................................................. 2 設(shè)計在學習模具制造中的作用 ......................................................................................... 2 來源背景 ............................................................................................................................. 2 目的 .................................................................................................................................. 3 要求 .................................................................................................................................. 3 實際意義 .......................................................................................................................... 3 主要設(shè)計內(nèi)容 .................................................................................................................. 3 第二章 原始資料 ...................................................................................................................... 4 塑料制品產(chǎn)量和生產(chǎn)要求 ................................................................................................. 4 塑料品種牌號 ..................................................................................................................... 4 特點 .................................................................................................................................. 5 生產(chǎn)方法 .......................................................................................................................... 5 成型特性 .......................................................................................................................... 5 用途 .................................................................................................................................. 5 制品圖樣 ........................................................................................................................... 10 尺寸及要求 ..................................................................................................................... 10 根據(jù)制品尺寸幾何形狀進行分析 ................................................................................ 10 尺寸及公差 ................................................................................................................. 10 塑料制品的形狀 ......................................................................................................... 10 脫模斜度 ..................................................................................................................... 11 第三章 基本參數(shù) .................................................................................................................... 11 XX 大學畢業(yè)設(shè)計 III 注射機選擇 ....................................................................................................................... 11 模具型腔數(shù)目的計算 ........................................................................................................ 12 計算原理 ........................................................................................................................ 12 制品體積 ........................................................................................................................ 13 型腔數(shù)目確定 ................................................................................................................ 13 模 架選擇 ........................................................................................................................... 13 第四章 成型零件尺寸及結(jié)構(gòu) ................................................................................................ 14 聚丙稀的收縮率（ S） ...................................................................................................... 14 型芯尺寸及結(jié)構(gòu)設(shè)計 ....................................................................................................... 14 型芯徑向尺寸計算利用公式 ........................................................................................ 14 型芯高度尺寸 ................................................................................................................ 15 型腔尺寸及結(jié)構(gòu)設(shè)計 ....................................................................................................... 15 型腔徑向尺寸 ....................................