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前言
光陰似梭，大學(xué)三年的學(xué)習(xí)一晃而過，為具體的檢驗(yàn)這三年來的學(xué)習(xí)效果，綜合檢測理論在實(shí)際應(yīng)用中的能力，除了平時(shí)的考試、實(shí)驗(yàn)測試外，更重要的是理論聯(lián)系實(shí)際，讓我們走向社會(huì)之前完成一次綜合性設(shè)計(jì)。即本次設(shè)計(jì)的課題是骨架（SMBS-04）的注射模設(shè)計(jì),是對(duì)以前所學(xué)課程的一個(gè)總結(jié)。
本次畢業(yè)設(shè)計(jì)課題來源于生活，應(yīng)用廣泛，但成型難度大，模具結(jié)構(gòu)較為復(fù)雜，對(duì)模具工作人員是一個(gè)很好的考驗(yàn)。它能加強(qiáng)對(duì)塑料模具成型原理的理解，同時(shí)鍛煉對(duì)塑料成型模具的設(shè)計(jì)和制造能力。
在此次設(shè)計(jì)中，主要用到所學(xué)的注射模設(shè)計(jì)，以及機(jī)械設(shè)計(jì)等方面的知識(shí)。著重說明了一副注射模的一般流程，即注射成型的分析、注射機(jī)的選擇及相關(guān)參數(shù)的校核、模具的結(jié)構(gòu)設(shè)計(jì)、注射模具設(shè)計(jì)的有關(guān)計(jì)算、模具總體尺寸的確定與結(jié)構(gòu)草圖的繪制、模具結(jié)構(gòu)總裝圖和零件工作圖的繪制、全面審核投產(chǎn)制造等。其中模具結(jié)構(gòu)的設(shè)計(jì)既是重點(diǎn)又是難點(diǎn)，主要包括成型位置的及分型面的選擇，模具型腔數(shù)的確定及型腔的排列和流道布局和澆口位置的選擇，模具工作零件的結(jié)構(gòu)設(shè)計(jì)，推出機(jī)構(gòu)的設(shè)計(jì)，拉料桿的形式選擇，排氣方式設(shè)計(jì)等。通過本次畢業(yè)設(shè)計(jì)，使我更加了解模具設(shè)計(jì)的含義，以及懂得如何查閱相關(guān)資料和怎樣解決在實(shí)際工作中遇到的實(shí)際問題，這為我以后從事模具職業(yè)打下了良好的基礎(chǔ)。
本次畢業(yè)設(shè)計(jì)得到了廣大老師和同學(xué)的幫助，特別是周華健老師和屠冬青老師的悉心指導(dǎo)，在此表示感謝！由于實(shí)踐經(jīng)驗(yàn)的缺乏，且水平有限，時(shí)間倉促。設(shè)計(jì)過程中難免有錯(cuò)誤和欠妥之處，懇請(qǐng)各位老師和同學(xué)批評(píng)指正。
編 者
目 錄
前言
緒論 ········································································1
第一章 設(shè)計(jì)任務(wù)書 ·······················································4
第二章 塑件分析 ·························································5
一、 塑件工藝性 ·············································5
二、 塑件結(jié)構(gòu)分析·························· ·························6
第三章 塑料材料的成型特性與工藝參數(shù) ·······················7
第四章 成型設(shè)備的選擇························· ·························9
一、 初選注射機(jī) ····················································9
二、 型腔數(shù)量的確定 ···············································10
第五章 澆注系統(tǒng)的設(shè)計(jì)和排溢系統(tǒng)的設(shè)計(jì) ······························11
一、 塑料制件在模具中的位置 ······································11
二、 澆注系統(tǒng)的設(shè)計(jì) ··············································12
三、 排溢系統(tǒng)的設(shè)計(jì) ···············································14
第六章 成型零部件的設(shè)計(jì)與計(jì)算 ·······································15
一、 成型零件的結(jié)構(gòu)設(shè)計(jì) ··········································15
二、 成型零件工作尺寸的計(jì)算 ······································15
三、 模架的選取 ···················································18
第七章 脫模機(jī)構(gòu)的設(shè)計(jì) ·················································19
一、 脫模力的計(jì)算 ·················································19
二、 推出機(jī)構(gòu)的設(shè)計(jì) ···············································19
第八章 合模導(dǎo)向機(jī)構(gòu)的設(shè)計(jì) ············································21
一、 導(dǎo)柱 ···························································21
二、 導(dǎo)套····························································21
第九章 鑲塊的精定位設(shè)計(jì)············································22
第十章 溫度調(diào)節(jié)系統(tǒng)的設(shè)計(jì)與計(jì)算·····································22
一、 冷卻的計(jì)算·············································22
二、 冷卻系統(tǒng)的設(shè)計(jì)原則與常見冷卻系統(tǒng)的機(jī)構(gòu)···················23
第十一章 注射機(jī)參數(shù)的校核··············································23
一、 注射量的校核················································23
二、 注射壓力的校核·············································23
三、 模具與注射機(jī)安裝部分的相關(guān)尺寸······························23
四、 行程的校核····················································24
五、 頂出裝置的校核················································25
參考文獻(xiàn)································································26