PLC在纸卷称重、标识、打包中的应用

论文编号:ZD879    论文字数:14975,页数:40

 摘  要
 纸卷是一种广泛应用的轻工业材料，也是国民经济发展的一个重要支柱。传统的纸卷称重、标识、打包都是人工完成的，带来的是手续繁琐，工作量大，称重不准确等问题。随着人们生活质量的提高，以及对包装纸的质量的提高，纸卷称重、标识、打包正在向用PLC自动控制来完成。从某种意义上讲，决定客户的关注的不是里面产品的好坏，而是外面的包装是不是能吸引客户。随着现代软件技术的发展，单片机和PLC技术都有了飞速进步，为纸卷称重、标识、打包系统的实现提供了更多的现实可能。本文根据纸卷生产线上的称重（WEIGHT），标识(LOGO)，打包(PACKAGING)系统的研究开发现状，在纸卷称重，标识，打包系统中应用PLC，并取得了成功，具有普遍的现实意义。

关键词：纸卷   称重   标识    打包

 Abstract
 Paper roll is a widely used material in light industry. It is an important national economic development pillar also.
 Weighing the traditional paper rolls, logo, packaging are completed artificial. The procedures are cumbersome, heavy workload, weighing inaccurate and other issues.
 As people improve the quality life and to improve the quality of the wrapping paper, weighing paper rolls, logo, packaging are used PLC automatic control to complete. In a sense, the concern of the decision, there is not the quality of products. But the outside packaging is not able to attract customers.
 With the development of modern software technology, SCM and PLC technology have made rapid progress which is providing more realistic possible on weighing as paper rolls, logo, packaging system..
 Based on the production line of paper rolls weighing, logo, packaging system of research and development of status quo, weighing in paper rolls, logo, packaging system in the application of PLC, and has achieved success, which is universal relevance.
 
Keywords：paper rolls   weighing   logo     packaging

 目 录
摘要……………………………………………………………………… .………………...2
第一章         前言……………………………………………………………….….6
 1.1  引言……………………………………………………………………………….6
 1.2  开发PLC在此系统的必要性…………………………………………………….9
第二章        系统总体设计方案…………………………………………………10
2.1  系统总体结构…………………………………………………………….………10
2.2  系统硬件结构…………………………………………………………….... . …..13
2.3  系统软件流程图……………………………………………………….…………14
第三章         压力传感器………………………………………………………....16
 3.1 压力传感器概述…………………………………………………………………..16
 3.2 压力传感器分类…………………………………………..………………………16
3.3 景兴压力传感器…………………………………………………………………..18
 第四章     系统设计………………………………………..……………………….19
 4.1  PLC简介…………………………………………………………………..……..19
 4.2  PLC的主要功能………………………………………………….............20
 4.3  系统PLC程序……………………………………………………………….......21
 第五章     系统软件介绍………………………………………………. .…………28
 5.1 控制器的分类及其特点……………………………………………………..…...28
 5.2 PLC控制系统的分类……………………………………………………………...28
5.3 S7-200系统性能分析…………………………………………………………….30
 第六章    总结…………………………………………………………..………….…36
 致谢…………………………………………………………………...............37
 参考文献……………………………………………………………………………….....38
 附录………………………………………………………………………………………..39