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畢業(yè)設(shè)計(jì)(論文)
設(shè)計(jì)題目
塑料梳子注射模具設(shè)計(jì)
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院 (系): 河源職業(yè)技術(shù)學(xué)院
學(xué)生姓名: 許永鋒
專業(yè)班級(jí): 08模具設(shè)計(jì)與制造1班
學(xué) 號(hào): 2008301139
指導(dǎo)教師: 劉長(zhǎng)靈
2011年 5 月 13日
畢業(yè)設(shè)計(jì)(論文)
目錄
目錄 1
摘 要 3
Abstract 4
第一章 引言 5
第二章 塑件的工藝性能分析 6
2.1塑件分析 6
2.2塑件工藝性能分析 7
2.2.1成型塑料的工藝性能 7
2.2.2成型塑料的成型加工性能 8
2.3塑料成型主要技術(shù)指標(biāo) 9
2.4成型塑料注射成型工藝參數(shù) 9
2.5塑件的結(jié)構(gòu)工藝性 10
2.6塑件外型 11
圖2-2塑件外型 11
第三章 注射成型模具的設(shè)計(jì) 12
3.1選擇模架 12
3.2模具與注射機(jī)的關(guān)系 13
3.3澆注系統(tǒng)的設(shè)計(jì) 13
3.3.1澆口設(shè)計(jì) 14
3.3.2冷料井設(shè)計(jì) 15
3.4注塑模成型零部件設(shè)計(jì) 16
3.4.1型腔分型面位置和形狀的設(shè)計(jì) 16
3.4.2塑件在型腔中放置方位的確定 16
3.4.3分型面形狀的決定 16
3.4.4分型面位置的選擇 16
3.5成型零件的結(jié)構(gòu)設(shè)計(jì) 17
3.5.1凹模的結(jié)構(gòu)設(shè)計(jì) 17
圖3-6凹模 18
3.5.2 內(nèi)型心的結(jié)構(gòu)設(shè)計(jì) 18
3.5.3 凸模的結(jié)構(gòu)設(shè)計(jì)和凹模一樣 18
3.6排氣系統(tǒng)設(shè)計(jì) 19
3.7型腔成型尺寸的設(shè)計(jì) 19
3.7.1塑件精度及其影響因素 19
3.7.2型腔型心的成型尺寸計(jì)算 19
3.8合模導(dǎo)向和定位機(jī)構(gòu) 22
1.定位作用 22
2.導(dǎo)向作用 23
3.承受一定的側(cè)向壓力 23
3.9脫模機(jī)構(gòu)設(shè)計(jì) 24
1)推出機(jī)構(gòu)應(yīng)盡量設(shè)置在動(dòng)模一側(cè) 24
2)保證塑件不因推出而變形損壞 24
3)機(jī)構(gòu)簡(jiǎn)單動(dòng)作可靠 24
4)良好的塑件外觀 24
5)合模時(shí)的正確復(fù)位 24
3.10模具冷卻系統(tǒng) 25
模具冷卻系統(tǒng)的設(shè)計(jì)原則: 25
①冷卻水通道的設(shè)置 25
②冷卻水孔的布置 25
③降低入水與出水溫度差 26
第四章 裝配圖 28
結(jié)論 30
參考文獻(xiàn) 30
致謝 31
摘 要
近年來(lái),我國(guó)家電工業(yè)的高速發(fā)展對(duì)模具工業(yè),尤其是塑料模具提出了越來(lái)越高的要求,2004年,塑料模具在整個(gè)模具行業(yè)中所占比例已上升到30%左右,據(jù)有關(guān)專家預(yù)測(cè),在未來(lái)幾年中,中國(guó)塑料模具工業(yè)還將持續(xù)保持年均增長(zhǎng)速度達(dá)到10%以上的較高速度的發(fā)展。國(guó)內(nèi)塑料模具市場(chǎng)以注塑模具需求量最大,其中發(fā)展重點(diǎn)為工程塑料模具。
注射成型是塑料成型的一種重要方法,它主要適用于熱塑性塑料的成型,可以一次成型形狀復(fù)雜的精密塑件。本課題就是將日常生活中的梳子為設(shè)計(jì)模型,將注射模具的相關(guān)知識(shí)作為依據(jù),闡述塑料注射模具的設(shè)計(jì)過(guò)程。
本設(shè)計(jì)對(duì)日常生活中的梳子進(jìn)行的注塑模設(shè)計(jì),利用Ug軟件對(duì)塑件進(jìn)行了實(shí)體造型,對(duì)塑件結(jié)構(gòu)進(jìn)行了工藝分析。明確了設(shè)計(jì)思路,確定了注射成型工藝過(guò)程并對(duì)各個(gè)具體部分進(jìn)行了詳細(xì)的計(jì)算和校核。如此設(shè)計(jì)出的結(jié)構(gòu)可確保模具工作運(yùn)用可靠,保證了與其他部件的配合。最后用autoCAD繪制了一套模具裝配圖和零件圖。
本課題通過(guò)對(duì)日常生活中的梳子的注射模具設(shè)計(jì),鞏固和深化了所學(xué)知識(shí),取得了比較滿意的效果,達(dá)到了預(yù)期的設(shè)計(jì)意圖。
關(guān)鍵詞:塑料模具;注射成型;模具設(shè)計(jì);梳子
Abstract
In recent years, the rapid development of China's household electrical appliance industry to the mold industry, especially the plastic mold raised higher and higher demands, in 2004, the entire mold plastic mold industry, the proportion had risen to about 30%, according to the experts predict in the next few years, China plastic mold industry will continue to maintain an average annual growth rate of 10% or more of the high rate of development. The domestic market in order to injection mold plastic mold greatest demand, including development priorities of plastic molds.
Injection molding plastic molding an important method, which is mainly applied to thermoplastic molding, can be a complex shape forming of precision plastic parts. This topic is to Daily Comb for the design of the shell model, the injection mold-related knowledge as the basis to explain plastic injection mold design process.
The design of the Daily Comb on the shell for the injection mold design, plastic parts using Ug software had solid modeling, the structure of the plastic parts of the process analysis. Clear design ideas, determine the injection molding process and to specific parts of a detailed calculation and checking. The structure of such a design work to ensure that the use of molds and reliable to ensure that the co-ordination with other components. At last, autoCAD drawing a set of mold assembly drawings and parts drawing.
The topic of the slider Daily Comb shell by injection mold design, consolidate and deepen the knowledge of what they have learned, and achieved satisfactory results, to achieve the desired design intent.
Keywords: plastic mold; injection molding; mold design;; Daily Comb
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