论文编号:ZD253 论文字数:10740,页数:21

摘 要
   
 在现代化的工业生产中常常需要对产品进行计数和包装，如果这些繁杂的工作由人工完成的话不但效率低，而且劳动强度大，不适合现代化的生产需要。本文主要对基于生产线自动装箱的PLC控制系统进行了详细的研究。该系统有两个传送带，即包装箱传送带和产品传送带。包装箱传送带用来传送产品包装箱，其功能是把已经装满的包装箱运走，并用一只空箱来代替。为使空箱恰好对准产品传送带的末端，使产品刚好落入包装箱中，在包装箱传送带的中间装一光电传感器，用以检测包装箱是否到位。产品传送带将产品从生产车间传送到包装箱，当某一产品被送到传送带的末端，会自动落入包装箱内，并由另一传感器转换成计数脉冲。本控制系统具有精度高、成本低、抗干扰能力强、故障率低、操作维护简单等特点，具有良好的应用价值。
 
关键词  可编程控制器；自动装箱控制系统；传送带控制
Abstract
   
 Often need to carry out counting and package on the product in the commercial run being modernized, not only the inefficient, moreover intensity of labour working from the words that the manpower accomplishes if these are complicated and overloaded is big , the childbirth being unfit to be modernized needs. Detailed research the main body of a book has been carried out on the PLC navar enchasing owing to production line automation mainly. Be system's turn to have two conveyer belts , be package box conveyer belt and product conveyer belt. The package box conveyer belt is used to deliver the product package box , whose function is that the package box luck already filling to full is leaked , is uses one to replace to come empty space box and. End being to make the empty space box aim at the product conveyer belt fitly, just the drop-in package box is hit by the messenger product, before package box conveyer belt centre install one photoelectricity sensor, in order to check if package box arrive at a place. And the product conveyer belt transmits a product from producing a workshop to package box , pawn some one products deliver to the conveyer belt end , the meeting automation drop-in package box inner, change from another sensor becoming counting pulse. Navar has accuracy height , the low , anti-interference ability of cost is strong , the malfunction leads a characteristic low , operation upkeep waits for simplely, have fine application value.
 
Key words  programming controller  Automation encasement navar  The conveyer belt is controlled

目    录
摘 要 I
Abstract II

第1章  绪论 1
1.1 课题背景 1
1.2 生产线自动化的发展概况 2
1.2.1 国内生产线自动化发展概况 2
1.2.2 国外生产线自动化发展概况 2
1.3 本文主要研究内容 3
1.3.1 设计任务书 3
1.3.2 主要解决的问题 4
第2章 控制系统的设计 5
2.1 方案论证 5
2.1.1 采用传统继电—接触器电气控制系统 5
2.1.2 采用PLC可编程序控制器控制系统 5
2.1.3 方案比较与选择 5
2.2 PLC的硬件结构及工作原理 6
2.2.1 PLC控制系统组成 6
2.2.2 PLC的工作过程 7
2.3 控制系统构成图和工作流程 7
2.3.1 控制系统构成图 7
2.3.2 控制系统工作流程图 7
2.4 控制系统硬件设计 8
2.5 控制系统软件设计 11
2.5.1 控制系统逻辑分析 11
2.5.2 控制系统程序设计 12
2.6 系统程序调试及结果 15

结论 16
参考文献 17
致谢 18

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