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XJW一120冷喂料擠出機設計
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  • XJW-120冷喂料擠出機設計摘 要
    冷喂料擠出機作為橡膠加工的重要設備,主要用于橡膠脫水、干燥、斷面形狀橡膠半成品擠出、混塑煉、脫硫、壓片、造粒、排氣以及電纜電線的包膠等。它的主要優點為:加工出的橡膠半成品嚴密均勻,尺寸于控制切準確,易于更換品種,有較高的生產能力,同一臺設備可以做多種工藝用途,可以完成工藝過程的連續、聯動和及自動化。
    該設計為銷釘冷喂料擠出機的結構總體設計。此設計主要介紹橡膠擠出機電機的選擇,減速機構的設計與校核,螺桿的設計如長徑比、塑化段、加料段、擠出段的分配,以及機筒的設計和冷卻水道的安裝。減速機構是擠出機的核心部分,它的組成零件的選擇在下面有詳細的介紹。
    此擠出機適用于冷喂料的擠出,其制品可以分為半成品和成品,膠料在機筒內停留時間比較長,因此需要有很好的冷卻裝置,并在機筒上鉆冷卻水道,用來降低膠料在擠出過程中產生的熱量。應值得注意的是銷釘在機筒上的位置,要避免與冷卻水道相干涉。
    該設計主要介紹了冷喂料擠出機的發展歷程,當前的現狀以及將來的前景,擠出機工藝參數的確定,總體布置的形式及軸向力傳遞的方式。對冷喂料擠出機的傳動系統和擠壓系統進行了著重介紹,對加熱冷卻系統、電氣控制系統以及機頭作了簡要的說明。該傳動系統由電動機和減速器組成,主要是對電動機的選擇、聯軸器的選擇、軸的設計與校核、齒輪的設計與校核、軸承的設計與校核以及鍵的選擇與校核等。擠壓系統由喂料裝置、螺桿、機筒、襯套組成。主要是對加料口、螺桿、機筒、襯套以及冷卻水道的設計。
    擠出機的螺桿采用的是雙頭等距不等深螺桿,與單頭螺桿相比,可以提高混煉和塑煉的效率,而等距不等深螺桿可以使膠料均勻壓實,制造相對容易,不需要用專門的車床或工具。止推軸承放在兩個徑向軸承的左側,不用直接安裝在減速器的箱壁處,而是在加料段與減速器箱壁之間的過渡段上,因此其軸向力不傳遞給箱壁,因而箱壁可以減薄,齒輪的嚙合情況相對較好。同時止推軸承安裝在箱體外,更加潤滑方便。


    關鍵詞: 銷釘冷喂料擠出機; 減速機; 螺桿; 機頭

    Abstract
    The aetioporphyrin design recommended the air-cooling hello material cotter nail machine the tube to extrude the machine’s universe construction the design. In the extrusion machine design process inter, cardinal recommend the design of the electrical engineering’s select, decelerate mechanism with adjust the design of the riboside, screw such as lengthways diameter ratio, charge zone, extrusion zone of allotment. The decelerate mechanism is which extrude machine the select of the core division, parts of its composition the presentation of the hereunder possession detail.
    The extrusion, product that said extrusion machine be applicable to the air-cooling hello the material can is divided into the completed product sum the semiproduct, glue material in the machine tube inside the staying time is longer, thereupon the requirement have the good cooling apparatus, and reduce the glue material in the extrusion process inter calorific value that produce.
    This design mainly is rightleng Weiliao the extruding machine carries on the design, introduced Leng Weiliao the extruding machine development course, the present situation as well as the future prospect, the extruding machine craft parameter determination, the general arrangement form and the axial force transmission way. Mainly the extruding machine transmission system and the extrusion system carried on to Leng Weiliao introduced emphatically that, to heat up the cooling system, the electricity control system and the nose has given the brief explanation. The transmission system is composed by the electric motor and the reduction gear, mainly to electric motor choice, shaft coupling choice, gear design and examination,axis
    design and examination, bearing design and examination as well as key choice and examination and so on. The extrusion system by feeds the material installment, the screw rod, the cylinder, the bushing is composed. Mainly is to the feed inlet, the screw rod, the cylinder, the bushing as well as cools the canal the design.
    The extruding machine screw rod uses the double headed equal-space not to wait for the deep screw rod, compares with the single end screw rod, can enhance the mixed iron-smelting and the plasticization efficiency, but the equal-space does not wait deeply to be possible to make the sizing material compaction, the manufacture to be easy, does not need the special lathe or the tool. The thrust bearing places two radial bearings left side, installs not directly in the reduction gear box wall place, but installs in the feeding section and between in the reduction gear box wall change-over portion, the axial force does not transmit for the box wall, thus the box wall may attenuate, the gear meshing situation is good. Simultaneously the thrust bearing installs in box in vitro, the lubrication is convenient.
    Keywords: cold feed extruder; screw; ram head; reducer; motor; barr



    目錄

    前 言 1
    第一章設計方案 2
    1.1 工作原理 2
    1.2 螺桿設計 3
    1.2.1機構設計和主要工藝參數的選擇 3
    1.2.2螺桿的消耗功率與電機的確定 3
    1.2.3螺桿的強度校核 4
    第二章 機筒設計 7
    2.1加熱冷卻通道的校核和設計 7
    2.1.1加料段機筒 7
    2.1.2中間段及擠出段機筒 7
    2.1.3機筒的強度校核 9
    2.2裝配應力的計算 10
    2.3合成應力的計算 11
    2.4機筒上銷釘的布置 12
    2.5機筒上各處聯接螺栓的校核 12
    第三章銷釘的設計 14
    3.1銷釘的初步設計 14
    3.2銷釘具體尺寸的設計 14
    第四章設計齒輪減速器 16
    4.1傳動部分的設計參數的選取 16
    4.2齒輪傳動計算 18
    4.2.1高速級齒輪傳動的校核 18
    4.2.2計算低級傳動齒輪 22
    4.3軸和軸承的的計算和校核 27
    4.3.1各軸軸徑的初步估算 27
    4.3.2軸的具體結構設計 28
    4.3.3各軸的強度校核 29
    4.4軸承的校核 39
    4.5軸上的平鍵校核 45
    4.6聯軸的選擇 46
    第五章螺桿和低速軸連接的部分計算和校核 47
    5.1花鍵的選擇和校核 47
    5.1.1低速軸帶花鍵部分的強度校核 47
    5.1.2推力軸承的選擇和校核 48
    總 結 50
    參考文獻 51
    致 謝 1


    前 言
    螺桿擠出機第一次被人們使用已經是一百年前的事情了,因為它具有較高的生產能力,經過擠出機加工后的半成品均勻密實,較易于更換種類,尺寸準確,符合工業加工的連續、聯動和自動化的標準。隨著改進,螺桿擠出機正在向高效,節能,操作方便的方向發展。
    銷釘擠出機出現于上世紀70年代,與傳統擠出相比較,其優勢在于:在確保更大的擠出量的同時,可以排出膠體溫度,降低其功耗,以及獲得更高的生產成本...
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