SJ170/35單螺桿擠出機(jī)整體設(shè)計(jì)

摘要
擠出機(jī)是塑料行業(yè)最基本的加工機(jī)械，擠出機(jī)的發(fā)展水平直接影響塑料產(chǎn)品的質(zhì)量。本設(shè)計(jì)的要求是設(shè)計(jì)出能夠加工聚乙烯的鋁塑板，由于聚乙烯的特殊性能要求設(shè)計(jì)特殊的排氣擠出機(jī)。本設(shè)計(jì)的擠出機(jī)是二階排氣擠出機(jī)，簡(jiǎn)單的說也就是兩根單螺桿串聯(lián)。這就要求我們對(duì)普通單螺桿的設(shè)計(jì)要有足夠的掌握而且還要對(duì)排氣的要求有深刻的了解。本設(shè)計(jì)首先介紹了螺桿擠出機(jī)的分類與發(fā)展前景等，其次為整體方案的確定部分，詳細(xì)的介紹了本設(shè)計(jì)的選擇依據(jù)，最后為整體設(shè)計(jì)部分，涉及到各參數(shù)的確定過程。主要工作內(nèi)容如下：
(1) 對(duì)各種不同擠出機(jī)的總體結(jié)構(gòu)進(jìn)行深入剖析。
(2) 根據(jù)主要技術(shù)參數(shù)設(shè)計(jì)擠出機(jī)的整體結(jié)構(gòu)。
(3) 運(yùn)運(yùn)用AutoCAD繪制螺桿、機(jī)筒和機(jī)架零件圖；擠出機(jī)總體結(jié)構(gòu)裝配圖。
本課題運(yùn)用AutoCAD技術(shù)進(jìn)行擠出機(jī)總體結(jié)構(gòu)的設(shè)計(jì)，可以縮短產(chǎn)品開發(fā)周期，提高產(chǎn)品質(zhì)量，降低成本，增強(qiáng)企業(yè)的市場(chǎng)競(jìng)爭(zhēng)能力。

關(guān)鍵詞  擠出機(jī);螺桿；機(jī)筒；機(jī)架

Abstract
Extruder is the most basic machine of plastic industry, extruder level of development may have a direct impact on the quality of plastic products. This design requirement is designed to processing of aluminum-plastic polyethylene panels, because of the special properties of PE ,It is requirement to design a special exhaust extruder. The design of the extruder is the second exhaust extruder, that is a simple two single screw series. This demands us to have a sufficient grasp of the ordinary single screw design  and a deep understanding of exhaust extruder. The topic introduced the classification and development of screw extruder first; followed is the determination of the whole programme and some of the details on the choice of the design basis .The last is the overall design part,it involves to the determination of every parameters. Major works as follows:
(1) of various extruder the overall structure of an in-depth analysis.
(2) under the main technical parameters extruder design the overall structure.
(3) Win use AutoCAD drawing screw, barrel and rack parts map; extruder overall structure of assembly.
    The use of AutoCAD technology issues extruder overall structure of the design, can shorten the product development cycle, improve product quality, reduce costs and enhance their competitiveness in the market.

Keywords  extruder  screw  barrel  rack
 
目       錄

1 緒論 ………………………………………………………………………………………1
1.1 單螺桿擠出機(jī) ………………………………………………………………………1
1.1.1 基本操作  ………………………………………………………………………1
1.1.2 排氣擠出機(jī)………………………………………………………………………2
1.1.3 橡膠擠出機(jī)………………………………………………………………………2
1.2 多螺桿擠出機(jī) ………………………………………………………………………3
1.2.1 雙螺桿擠出機(jī)……………………………………………………………………3
1.2.2 多（＞2）螺桿擠出機(jī) …………………………………………………………3
1.3 新型擠出機(jī) …………………………………………………………………………5
1.3.1 手提式擠出機(jī)……………………………………………………………………5
1.3.2 磨盤式擠出機(jī)……………………………………………………………………5
1.3.3 往復(fù)螺桿擠出機(jī)…………………………………………………………………6
2 擠出機(jī)總體方案的確定 …………………………………………………………………8
2.1 擠出機(jī)總體方案布局的基本要求 …………………………………………………8
2.2 螺桿類型的確定 ……………………………………………………………………8
2.2.1 螺桿的工作性能指標(biāo)評(píng)定………………………………………………………8
2.2.2 螺桿的選用原則  ………………………………………………………………8
2.2.3 螺桿的分類  ……………………………………………………………………9
2.2.4 螺桿方案的確定  ………………………………………………………………9
2.3 機(jī)筒類型的確定 ……………………………………………………………………9
2.3.1 機(jī)筒的結(jié)構(gòu)類型…………………………………………………………………9
2.3.2 機(jī)筒方案的確定…………………………………………………………………11
  2.4 本設(shè)計(jì)整體方案的確定 ……………………………………………………………11
3 擠出機(jī)的整體設(shè)計(jì) ………………………………………………………………………13
3.1 P E鋁塑板的基本特征  ……………………………………………………………13
3.2 產(chǎn)品的設(shè)計(jì)要求 ……………………………………………………………………13
3.3 螺桿設(shè)計(jì) ……………………………………………………………………………13
3.3.1 螺桿深度和壓縮比的確定………………………………………………………14
  3.3.2 螺距和螺紋升角的確定…………………………………………………………19
3.3.3 三段式螺桿長(zhǎng)度的確定  ………………………………………………………19
3.3.4 螺紋斷面設(shè)計(jì)  …………………………………………………………………24
3.3.5 螺桿設(shè)計(jì)的校核……………………………………………………..…………26
3.3.6 第二階螺桿各參數(shù)的確定………………………………………………………30
結(jié)論…………………………………………………………………………………………33
致謝  ………………………………………………………………………………………34
參考文獻(xiàn)  …………………………………………………………………………………35
附錄…………………………………………………………………………………………36
英文部分  …………………………………………………………………………………36
中文翻譯……………………………………………………………………………………44