直徑120mm臥式單螺桿擠塑機全套畢業(yè)設(shè)計
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- 直徑120mm臥式單螺桿擠塑機全套畢業(yè)設(shè)計
摘 要
塑料工業(yè)是新興的工業(yè)，是現(xiàn)代工業(yè)中的一個重要的行業(yè)，與其他工業(yè)相比它是一個年輕的，但發(fā)展前景廣闊的工業(yè)部門。
在機械制造業(yè)中，塑料廣泛的被用來制造零件、部件。據(jù)統(tǒng)計，每年大約有25﹪的塑料用于機電行業(yè)各個部門。塑料機械隨著工業(yè)的發(fā)展而逐步的成長起來。在塑料機械中，塑料擠出機是最多的機種之一，是塑料制品加工量最大的一種加工機械。
塑料擠出機在現(xiàn)代工業(yè)中有著廣泛的應(yīng)用，其中φ120塑料擠塑機主要用于各種熱塑性塑料的擠出成型。若配置相應(yīng)的機頭及輔機，選用合適的螺桿，能將聚氯乙烯（軟或硬）聚乙烯、聚丙烯、ABS等塑料連續(xù)擠制成管、膜、瓶、帶、絲、粒、板、異型材、電線電纜等制品。其主要特點是：吸收國外同類先進產(chǎn)品的特點、電控箱與擠塑機組成一體化形式。 設(shè)計有多種形式的螺桿，長徑比值大。采用可控硅直流電機驅(qū)動，無級調(diào)速平穩(wěn)可靠，亦可用變頻電機。機筒外設(shè)置鑄鋁加熱器，并配有冷卻用吹風機。 由數(shù)字顯示溫度控制儀實現(xiàn)自動控溫、定溫。具有軸向力過載保護和扭矩過載保護功能。 采用智能化雙顯數(shù)字化溫控儀，實現(xiàn)自動控制，控制精度高。
此次設(shè)計包括φ120塑料擠出機的總體布局，傳動系統(tǒng)的設(shè)計，螺桿軸承部分的結(jié)構(gòu)及其布置形式，擠壓系統(tǒng)的設(shè)計，主要零件的校核。
關(guān)鍵詞：塑料機械；塑料擠出機；單螺桿
Abstract
The plastics industry is the emerging industry, is in a modern industry important profession, compares it with other industries is young, but prospects for development broad Industry sector.
In the machine-building industry, the plastic widespread is used for to make the components, the part. Statistics indicated that probably has 25 plastics to use in mechanical and electrical profession each department every year. Plastic machinery gets up with but step-by-step growing up of development of industry.
In the plastic machinery, the plastic extruding machine is one of most aircraft types, is the plastic products process load biggest one kind of processing machinery. Plastic forces out machine having broad application in modern industry, phi120 plastic extruders among them are used for various thermoplastic plastics’ mainly to force out molding. If deploying the corresponding hand piece and auxiliary engine , selecting and using the right bolt , being able to Geon (soft or hard) plastic continuation such as polyethylene , polypropylene , ABS be pushed against manufacture the tube , film , bottle , belt , silk , granule , board , heterotypic products such as material , wire cable. Its main characteristic is: The characteristic, electricity absorbing the advanced abroad product of the same kind charges a box for being composed of the integration form with forcing out machine. Design bolt having various forms, long footpath ratio is big. Adopt the silicon controlled rectifier continuous current dynamo drive, steeples speed regulating is stable reliable, frequency conversion electric motor also available. Machine is set up outside the tube casting the aluminum heater, and be qualified for have a cooling to use a blower. From digital display temperature under the control of instrument realization, the automation charges the temperature, fixes the temperature. Have axial force overload protection and the moment of torsion overload protection function. Adopt the intellectualized two digitized obvious temperature to charge an instrument, realizes auto control, under the control of accuracy height. The design designing entire allocation, drive including those phi120 plastic forces out machine this time systematically, bolt axle bearing part structure and their design arranging a form, squeezing system, main part school examines.
Key words：Plastic machinery; Plastic forces out machine; Shan bolt
目 錄
第1章 緒論 1
1.1 課題背景 1
1.2 課題研究的目的和意義 1
1.3 國內(nèi)外在該方向的研究現(xiàn)狀及分析 2
第2章 電動機的選擇 5
2.1 電動機的可選擇類型 5
2.2 運動情況分析 6
2.3 傳動系統(tǒng)的總體布置 7
2.4 本章小結(jié) 7
第3章 擠塑機傳動系統(tǒng)設(shè)計 8
3.1 擠塑機工作特性的概念 8
3.2 擠塑機功率的確定 9
3.3 擠塑機的轉(zhuǎn)速要求及其調(diào)速范圍 9
3.4 傳動系統(tǒng)的組成及傳動形式 10
3.5 傳動比的確定及分配 10
3.6 計算功率及帶輪尺寸的確定 11
3.7 行星齒輪減速器的選擇 14
3.8 本章小結(jié) 15
第4章 擠塑機螺桿軸承部分的結(jié)構(gòu)及布置形式 16
4.1 螺桿軸承的布置形式的設(shè)計 16
4.2 軸承的冷卻與潤滑 17
4.3 螺桿與傳動軸的裝配結(jié)構(gòu) 17
4.4 止推軸承的選擇 18
4.5 螺桿的裝拆 18
4.6 本章小結(jié) 18
第5章 擠壓系統(tǒng)的設(shè)計 20
5.1 螺桿形式的選擇 20
5.2 分離性螺桿的工作性能 20
5.3 分離型螺桿的設(shè)計 20
5.4 機筒的設(shè)計 23
5.5 機筒的結(jié)構(gòu)類型及選擇 23
5.6 加料段料筒的設(shè)計 24
5.7 加料口的選擇 25
5.8 機筒材料的選擇 25
5.9 本章小結(jié) 26
第6章 擠塑機主要部件的強度校核 27
6.1 螺桿的強度校核 27
6.2 擠塑機主要零部件的安全系數(shù)的確定 31
6.3 本章小結(jié) 33
第7章 擠塑機加熱冷卻系統(tǒng)的設(shè)計 34
7.1 擠塑機的加熱方式 34
7.2 擠塑機的冷卻裝置 34
7.3 本章小節(jié) 35
結(jié)論 36
參考文獻 37
致謝 38 ...
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