XJW-120冷喂料挤出机设计
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- XJW-120冷喂料挤出机设计摘 要
冷喂料挤出机作为橡胶加工的重要设备，主要用于橡胶脱水、干燥、断面形状橡胶半成品挤出、混塑炼、脱硫、压片、造粒、排气以及电缆电线的包胶等。它的主要优点为：加工出的橡胶半成品严密均匀，尺寸于控制切准确，易于更换品种，有较高的生产能力，同一台设备可以做多种工艺用途，可以完成工艺过程的连续、联动和及自动化。
该设计为销钉冷喂料挤出机的结构总体设计。此设计主要介绍橡胶挤出机电机的选择，减速机构的设计与校核，螺杆的设计如长径比、塑化段、加料段、挤出段的分配，以及机筒的设计和冷却水道的安装。减速机构是挤出机的核心部分，它的组成零件的选择在下面有详细的介绍。
此挤出机适用于冷喂料的挤出，其制品可以分为半成品和成品，胶料在机筒内停留时间比较长，因此需要有很好的冷却装置，并在机筒上钻冷却水道，用来降低胶料在挤出过程中产生的热量。应值得注意的是销钉在机筒上的位置，要避免与冷却水道相干涉。
该设计主要介绍了冷喂料挤出机的发展历程，当前的现状以及将来的前景，挤出机工艺参数的确定，总体布置的形式及轴向力传递的方式。对冷喂料挤出机的传动系统和挤压系统进行了着重介绍，对加热冷却系统、电气控制系统以及机头作了简要的说明。该传动系统由电动机和减速器组成，主要是对电动机的选择、联轴器的选择、轴的设计与校核、齿轮的设计与校核、轴承的设计与校核以及键的选择与校核等。挤压系统由喂料装置、螺杆、机筒、衬套组成。主要是对加料口、螺杆、机筒、衬套以及冷却水道的设计。
挤出机的螺杆采用的是双头等距不等深螺杆，与单头螺杆相比，可以提高混炼和塑炼的效率，而等距不等深螺杆可以使胶料均匀压实，制造相对容易，不需要用专门的车床或工具。止推轴承放在两个径向轴承的左侧，不用直接安装在减速器的箱壁处，而是在加料段与减速器箱壁之间的过渡段上，因此其轴向力不传递给箱壁，因而箱壁可以减薄，齿轮的啮合情况相对较好。同时止推轴承安装在箱体外，更加润滑方便。
关键词： 销钉冷喂料挤出机； 减速机； 螺杆； 机头
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
目录
前 言 1
第一章设计方案 2
1.1 工作原理 2
1.2 螺杆设计 3
1.2.1机构设计和主要工艺参数的选择 3
1.2.2螺杆的消耗功率与电机的确定 3
1.2.3螺杆的强度校核 4
第二章 机筒设计 7
2.1加热冷却通道的校核和设计 7
2.1.1加料段机筒 7
2.1.2中间段及挤出段机筒 7
2.1.3机筒的强度校核 9
2.2装配应力的计算 10
2.3合成应力的计算 11
2.4机筒上销钉的布置 12
2.5机筒上各处联接螺栓的校核 12
第三章销钉的设计 14
3.1销钉的初步设计 14
3.2销钉具体尺寸的设计 14
第四章设计齿轮减速器 16
4.1传动部分的设计参数的选取 16
4.2齿轮传动计算 18
4.2.1高速级齿轮传动的校核 18
4.2.2计算低级传动齿轮 22
4.3轴和轴承的的计算和校核 27
4.3.1各轴轴径的初步估算 27
4.3.2轴的具体结构设计 28
4.3.3各轴的强度校核 29
4.4轴承的校核 39
4.5轴上的平键校核 45
4.6联轴的选择 46
第五章螺杆和低速轴连接的部分计算和校核 47
5.1花键的选择和校核 47
5.1.1低速轴带花键部分的强度校核 47
5.1.2推力轴承的选择和校核 48
总 结 50
参考文献 51
致 谢 1
前 言
螺杆挤出机第一次被人们使用已经是一百年前的事情了，因为它具有较高的生产能力，经过挤出机加工后的半成品均匀密实，较易于更换种类，尺寸准确，符合工业加工的连续、联动和自动化的标准。随着改进，螺杆挤出机正在向高效，节能，操作方便的方向发展。
销钉挤出机出现于上世纪70年代，与传统挤出相比较，其优势在于：在确保更大的挤出量的同时，可以排出胶体温度，降低其功耗，以及获得更高的生产成本...
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