基于PLC的塑料注塑成型机控制系统设计本科生毕业设计(论文)学院(系):专业:学生:指导教师:完成日期年月本科生毕业设计(论文)I基于PLC的塑料注塑成型机控制系统设计基于PLC的塑料注塑成型机控制系统设计DesignoftheControlSystemofPlasticInjectionMoldingMachineBasedonPLC总计:30页表格:1个插图:14幅II基于PLC的塑料注塑成型机控制系统设计本科毕业设计(论文)基于PLC的塑料注塑成型机控制系统设计DesignoftheControlSystemofPlasticInjectionMoldingMachineBasedonPLC学院(系):专业:学生姓名:学号:指导教师(职称):评阅教师:完成日期:III基于PLC的塑料注塑成型机控制系统设计基于PLC的塑料注塑成型机控制系统设计电气工程及其自动化[摘要]采用继电器和开关阀的注塑机控制系统的接线复杂、控制精度低、维修不便且缺乏柔性,基于PLC技术的控制方式可大大提高整机的综合性能。本文选用SIMATICS7-200小型PLC系统对注塑机的控制单元进行了通用化设计:包括系统的硬件接线和I/O分配;采用STEP7-Micro/WIN32软件平台进行编程,方式灵活、界面友好且调试方便。[关键词]控制系统;可编程控制器;塑料注塑成型机;起保停电路DesignoftheControlSystemofPlasticInjectionMoldingMachineBasedonPLCElectricalEngineeringandAutomationSpecialtyAbstract:ControlsystemtothePlasticinjectionmoldingmachineformedbyelectricrelaysandswitchingvalveshasmanyshortcomings,suchascomplexitywiring,lowcontrolaccuracy,inconveniencemaintenanceandlackofflexibility.UsingPLCtechnologycangreatlyenhancethemachine’soverallperformance.Inthispaper,SIMATICS7-200miniPLCsystemwasusedtodesignthePlasticinjectionmoldingmachine’scontrolunit:includingthehardwarewiringandtheI/Oallocation.TheSTEP7-Micro/WIN32softwareisusedasprogrammingplatform;itisveryflexible,user-friendlyandconvenientdebugging.Keywords:Controlsystem;programmablelogiccontroller;plasticinjectionmoldingmachine;protectandstopcircuitIV基于PLC的塑料注塑成型机控制系统设计目录1引言....................................................................11.1课题研究的目的和意义...............................................11.2PLC在国内外的发展状况.............................................21.3本课题的主要内容...................................................32注塑机控制系统的分析....................................................32.1相关技术组成.......................................................32.1.1注塑机控制系统...............................................32.1.2可编程序控制器...............................................42.1.3温度传感器...................................................42.1.4调功器.......................................................52.2注塑机的机械结构...................................................62.2.1注射部分.....................................................72.2.2合模部分.....................................................72.2.3液压系统.....................................................72.2.4控制系统.....................................................72.3注塑机控制系统原理.................................................72.4注塑机控制系统的控制要求...........................................83注塑机控制系统的硬件设计................................................93.1PLC选型的方法.....................................................93.1.1机型选择的原则................................................93.1.2PLC容量选择.................................................103.1.3I/O模块的选择...............................................103.2确定I/O点及选择PLC......................................