毕业设计（论文）-基于PLC的塑料管扩口机电控系统的设计.docVIP

塑料管扩口机电控系统的设计 摘要 扩口机是塑料制管行业不可缺少的设备，是PVC管生产过程中一个重要的组成部分。根据不同的要求KSG系列扩口机既可单机运行又可与塑料挤出机、牵引机、切割机配套组成塑料管自动生产线。该机在厚壁管、大口径塑料管扩口过程中有较强的优势。本文探讨了利用可靠性高、抗干扰能力强的可编程控制器(PLC)作为主控部件来实现塑料管扩口机电控系统设计的技术，阐述了其在扩口机电控系统设计中的作用和优势。根据管材对扩口机实际扩口过程中的复杂要求及可靠度高的特点，具体研究了实现功能所需硬件的配置、软件程序的编制。在分析了解了扩口机工作流程的基础上，进行PLC控制系统的硬件和软件设计。硬件部分主要介绍了主电路的设计思路和设计方案，并介绍了器件的选型方法；软件部分则重点介绍了手动、自动工作流程程序编制的方法以及为提高系统工作的可靠性、经济性和提高其自动化程度、实现工步之间的约束条件、联锁保护所采取的措施。除了原理设计以外，还对其控制系统进行了工艺方面的设计。 关键词：电控系统 扩口机 PLC PVC生产线 A design of electric-control system of belling machine Abstract Belling machine is indispensable equipment of the plastic pipe industry , is an important part of the PVC pipe production process . KSG series belling machine can run stand-alone but also according to different requirements and plastic extrusion machine, traction machine, cutting machine automatic production line supporting the composition of the plastic tube . The aircraft in the thick-walled pipe , large diameter plastic tube flaring process has a strong advantage . This paper discusses the use of high reliability, anti-interference ability programmable controller (PLC) as a main component to Plastic Pipe Belling electrical control system design technology, elaborated in the flaring electrical control system design the role and advantages. According to the pipe belling machine actual flaring process the complex requirements and high reliability features , specific studies required to achieve functional hardware configuration , software program preparation . The understanding on the basis of the belling machine workflow , PLC control system hardware and software design . The hardware part of the main circuit design ideas and design , and describes the selection method of the device ; the software part focuses on the manual and automatic workflow programming methods as well as improve the reliability of the system , economic and improve the degree of automation , and the measures taken to achieve step constraints , interlock protection . In addit