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施胶机总体设计
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摘要：施胶机是造纸机械中必不可少的一部分，其作用是在纸张表面进行施胶，通过表面施胶从而达到一定的质量要求，使纸张的表面性能得到改善。表面施胶是造纸过程中一个重要的环节，施胶机将一定干度的纸幅通过转移辊后，再进入形成压榨区的辊筒，通过调节两辊之间的间隙，将胶料均匀地涂抹在纸幅上，使纸或纸板表面具有阻止液体扩散和渗透的性能，使纸张具有良好的外观及印刷性能。施胶是通过二辊之间的压力，使胶液渗透到纸页表面，通过气囊控制压力大小来调节施胶量。所以，在造纸行业中通过施胶机来提高纸张质量是十分重要的。
本次毕业设计课题是施胶机总体设计。本文首先介绍了施胶机的背景及发展，分析了施胶机的工作原理，找出设计的重点与难点并确定方案，通过方案论证确定了主体结构，对各种结构的性能及参数进行了分析和计算。辊筒作为施胶机最基本和最重要的组成部件，其结构设计是本课题设计的重点。本文分析了辊筒的机械性能、加工工艺，计算了辊筒的刚度、挠度、中高以及强度校核。
关键词：施胶机；辊筒；表面施胶；中高量4218
The sizer overall design
Abstract: Sizing machine is an essential part of the paper machinery, its role is to sizing on the surface of paper. By surface sizing to meet certain requirements, improved the surface properties of the paper. Surface sizing is an essential part in the papermaking process. The first step of sizing coater is to use the transfer roller to pass through dry paper web of a certain degree. Then, by rotating the roller to regulate the gap, the rubber pieces is added evenly onto the paper, so that the surface of paper or cardboard can prevent liquid diffusion and penetration, and the paper has a good appearance and printing properties. By adjusting the pressure between two rollers, glue penetrates into the surface of sheet, the volume of glue consumption is decide by controlling the pressure. Thus, sizing coater is very important to improve paper quality.
The graduation project is the sizer overall design. This article first introduction the sizer background and development, analyzed the working principle of sizer, identify important and difficult design, determine the program. Identified through the program demonstrated the host structure, the performance and parameters of the various structures were analyzed and calculated. Roller apply a defined machine as the most basic and most important component parts, the structural design is the focus of the project design. This paper analyzed the mechanical properties of the roller, processing technology, computing the stiffness of the roller, deflection, convexity and strength check.
Key words: sizer；roller；surface sizing；convexity
目 录
1 绪论…1
1.1课题的背景1
1.2 课题的目的与意义…2
2 施胶机的工作原理2
3 设计的关键及难点3
3.1 差动螺旋机构的运动分析和几何参数…3
3.2 辊筒结构设计3
3.3 辊筒中高的确定3
3.4 施胶机主体结构选择…3
4 方案论证…4
4.1 施胶机结构设计方案论证…4
4.2 压辊设计方案论证…4
4.3 水平式施胶机和斜列式施胶机的结构与性能分析4
4.3.1 水平式施胶机…4
4.3.2 斜列式施胶机…6
4.3.3 斜列式施胶机的有利因素…6
5 主要零部件的设计计算8
5.1 施胶机转轴设计8
5.2 施胶机转轴计算8
5.2.1 施胶机转轴的动力参数计算…8
5.2.2 电机的选择9
5.2.3 施胶机差动螺旋机构参数计算11
5.2.4 上压辊轴的体积和重量计算11
5.2.5 下压辊轴的体积和重量计算…12