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按鍵注塑模具設(shè)計(jì)課題-wenkub

2023-04-10 00:38:54 本頁面
 

【正文】 —修正系數(shù), x△ =1/2~1/3,一般取 。本模具用一模兩腔的成型方法,將澆注系統(tǒng)設(shè)在塑件中央處,分 流道設(shè)置成圓形,易于加工。結(jié)合鎖模力計(jì)算 F==4kN=<25kN(所選注塑機(jī)的最大鎖模力),滿足要求。 綜上所述,鍵盤按鍵的分型面設(shè)計(jì)采用單分型面,如圖所示: 由于塑件外形因素,型腔內(nèi)要做深槽,所以不宜采用太多的型腔數(shù)目,而該塑件的體積小,為提高生產(chǎn)效率,本次設(shè)計(jì)決定采用一模兩腔。 確保塑件表面質(zhì)量 分型面盡可能選擇在不影響外觀的部位以及分型面處產(chǎn)生的飛邊容易加工修整部位。( 溫度,時(shí)間,壓力,注射量等)根據(jù)情況,ABS 塑料的成型工藝參數(shù)可作如下選擇,在試模時(shí)可根據(jù)實(shí)際情況作適 當(dāng)?shù)恼{(diào)整。 開模行程校核模具開模行程應(yīng)滿足:SmSz,其中:Sz 為最大開模行程,查注射機(jī) XSZ30 型 Sz =160mm,Sm 為模具的開模行程。 第二章 成型設(shè)備的選擇 計(jì)算塑件的體積:塑件的體積:V 塑件=2698=1396mm3 (鎖模力,最大開模行程,最大注射機(jī)壓力等)選擇:采用 XSZ30 的注塑機(jī),公稱注射量為 30cm3[7]。該零件的尺寸精度 屬中等,對應(yīng)模具相關(guān)零件尺寸的加工可保證。對精度較高的 塑件,模溫宜取 5060 度,模溫宜取 6080 度。(4)流動(dòng)性比 HIPS 差一點(diǎn),比 PMMA、PC 等好,柔韌性好。 this issue also with the mechanical drawing , tolerances , materials science curriculum relations , mold manufacturing technology and so closely integrated application of knowledge learned .Keywords: mold manufacturing, mold industry .Through this project can help me understand the system forming principle , process characteristics and manufacturability of plastic injection molding , etc. , the correct analysis of the mold forming process requirements 。Mold in machinery, electronics, light industry, automobile , textile , aviation, aerospace and other industrial areas , is increasingly being the most widely used major technology and equipment, it took these industrial areas 60% 90% of product parts , ponents and 本次設(shè)計(jì)的題目是計(jì)算機(jī)按鍵的注塑模具設(shè)計(jì),本次設(shè)計(jì)是根據(jù)零件的實(shí)體形狀結(jié) 構(gòu),通過測繪得到各個(gè)尺寸,用 AutoCAD 繪制裝配圖及零件圖,用 Pro/E 繪制實(shí)體圖。中國模具出口數(shù)量極少,但中國模具鉗工技術(shù)水平高,勞動(dòng)成本低,只要配備一些先進(jìn) 的數(shù)控制模設(shè)備,提高模具加工質(zhì)量,縮短生產(chǎn)周期,溝通外貿(mào)渠道,模具出口將會(huì)有很大發(fā)展。用模具制造零件以其效率高,產(chǎn)品質(zhì)量好,材料消耗低, 生產(chǎn)成本低而廣泛應(yīng)用于制造業(yè)中。 模具工業(yè)既是高新技術(shù)產(chǎn)業(yè)的一個(gè)組成部分,又是高新技術(shù)產(chǎn)業(yè)化的重要領(lǐng)域。研究和發(fā)展模具技術(shù),提高模具技術(shù)水平,對于促進(jìn)國民經(jīng)濟(jì)的發(fā)展有著特 別重要的意義。 通過本課題能夠幫助我系統(tǒng)了解塑料的工藝性及注塑成型的有關(guān)成型原理、工藝特點(diǎn) 等,正確分析成型工藝對模具的要求;掌握模具結(jié)構(gòu)及零部件的設(shè)計(jì)、計(jì)算方法、模具 結(jié)構(gòu)特點(diǎn)及設(shè)計(jì)程序等;了解其它模具有關(guān)知識(shí)及模具 CAD/CAM;本課題還與機(jī)械制 圖、公差配合、材料學(xué)、模具制造工藝學(xué)等課程關(guān)系緊密,是所學(xué)知識(shí)綜合應(yīng)用關(guān)鍵詞:模具制造,模具工業(yè)。parts production and processing. The world market demand mold , the mold is a major exporter of the United States , Japan, France , Switzerland and other exports very few die , but the high technical level of China Mould fitter , low labor costs , as long as the number of control with some advanced molding equipment , mold processing to improve quality, shorten the production cycle , munication channels, foreign trade , exports will have great development mold master mold structure and parts design , calculation methods , structural features and design of the moldMold market , mold design 目 錄 摘要.............................................................2關(guān)鍵詞...........................................................2Abstract.........................................................3Key words.........................................................3第一章 塑件工藝性分析析........................................5 …………………………………………………………………5 …………………………………………………………………5 …………………………………………………………………6第二章 成型設(shè)備的選擇……………………………………………………6…………………………………………………………6……………………………………………………6鎖模力,最大開模行程,公稱壓力等 ………………………………………………6溫度,時(shí)間,壓力,注射量第三章 塑料模的結(jié)構(gòu)設(shè)計(jì)……………………………………………………7................................................7.........................................7…………………………………………………………….7.........................................................................................7..........................................8................................................8第四章 模具結(jié)構(gòu)及工作原理分析…………………………………………….12.................................................13.............................................13.......................................13(模板,導(dǎo)柱,導(dǎo)套,澆口套,頂桿,復(fù)位桿,拉料桿等零件尺寸設(shè)計(jì))第五章 注射機(jī)參數(shù)校核……………………………………………………….13 開模行程是否滿足要求................................14第六章 制定模具零件加工工藝過程................................16 …………………………………………………………16............................................16,定模板加............................................16第七章 模具圖紙繪制………………………………………………………..16....
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