辽宁工程技术大学
本科课程设计说明书
题 目：自动钢带打捆机PLC电气控制系统设计
班 级： 机电10-03 姓 名： 孙海跃 学 号： 1007060318 指导教师： 田秀华 完成日期： 2014.1.16
中文题目:自动钢带打捆机PLC电气控制系统设计
外文题目: Automatic steel strip baling machine PLC electrical control system design
课程设计共 18 页完成日期2014年1月16日
图纸共0 张)
答辩日期2014年1月17日
(辽宁工程技术大学课程设计
摘要
钢卷打捆机是针对冷轧钢卷快速全自动打包处理而设计的专用机械化设备。由于钢卷打捆机的工作环境恶劣，加之各个自动化生产企业对设备要求越来越高，所以高性能，新概念的全自动打捆机械就显得更为重要。气动装置和PLC可控制编程系统的加入，使打捆机具有更高的工作稳定性，打捆的可靠性，工作寿命长，操作更简单，通用性更强，自动化程度更高，广泛得到专业人士的认可。
本文主要综述了钢卷打捆机的PLC控制系统的设计。本次设计采用西门子s7-200控制打捆机的一系列动作。通过对钢卷打捆机系统的工作流程分析可知，一个打捆循环包括八个主要流程:环臂升降、打捆头升降、压紧钢卷、送带、抓紧钢带头、收带、咬扣与切带和复位。并做出了相应的外部接线图，电路原理图，控制流程图。
关键词：可编程控制器；自动控制；气动；打捆机
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孙海跃：自动钢带打捆机PLC电气控制系统设计
ABSTRACT
Steel roll banding machine is fast automatic for cold rolled steel coils with packaging designed for the special mechanical equipment. Due to bad coil baling machine working environment, combined with various automated production enterprise to equipment demand is higher and higher, so the high performance, a new concept of full automatic baling machine becomes even more important. Pneumatic device and programming of PLC control system, make the baling machine has higher stability and reliability of baling, long working life, operating more simple, more versatility and higher degree of automation, widely recognised by professionals.
This article mainly summarized the coil baling machine PLC control system design. This design adopts Siemens s7-200 control baling machine, a series of actions. Through the coil baling machine system analysis of the working process, a banding cycle including eight major processes: ring arm movements, baling head lift, pressure steel coil, send belt, to take the lead in steel, take-up, biting and cutting and reset. And make the corresponding external wiring diagram and circuit principle diagram and control flow chart.
Key words: Programmable controller; Automatic control; Pneumatic; Baling machine
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辽宁工程技术大学课程设计
目录
摘
要
........................................................................................................................................................ I
前言 ................................................................................................................................................................... 1 1 打捆机的基本概述 .............................................................................................................................. 2
1.1 钢带打捆机的组成部件概述 ........................................................................................... 2 1.2 钢带打捆机的工作原理 ...................................................................................................... 3 1.3 打捆机的发展趋势 ................................................................................................................. 3 2 PLC的硬件设计 ..................................................................................................................................... 5
2.1 PLC概述 ....................................................................................................................................... 5
2.1.1 PLC的基本概念 .......................................................................................................... 5 2.1.2 PLC的基本原理 .......................................................................................................... 5 2.1.3 PLC的特点 ..................................................................................................................... 6 2.2 PLC的硬件系统组成 ............................................................................................................. 6 2.3 PLC的控制系统接线图设计 ............................................................................................. 7
2.3.1 PLC的控制过程简单分析 ..................................................................................... 7 2.3.2 PLC接线图的I\\O地址分配表 .......................................................................... 8 2.3.3可编程控制器的选择 ............................................................................................... 9 2.3.4 外部接线图的设计 ................................................................................................... 9 2.3.5 主电路图的设计 ....................................................................................................... 10
3 PLC的软件设计 ................................................................................................................................... 12
3.1 PLC程序流程图的设计 ..................................................................................................... 12 3.2 PLC梯形图的设计 ................................................................................................................ 14