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1、专业：班级学号：学生姓名：指导教师：摘要称重是指预定的比例，在衡器测量几个已知的物质。用途非常广泛，可用于各种配料计量，也可用于材料测量（料斗秤）。在包装封口机的情况下，它是一种定量包装秤..具体设计是送料过程分为两个阶段，并为推动原油进料阀和较小的进给阀打开和关闭气动系统，通过两喂养确保称量精度和速度，实现脉冲修正功能，提高定量灌装精度。具有良好的人机界面，该系统可以应用于不同的颗粒物料的定量灌装。同时通过相关电气图设计，元器件选型，PLC控制设计和控制系统程序的编写，达到自动称量和定量给料和自动控制的目的，完成设计任务。
2、可用于化工，医药，饲料，水稻，在松散颗粒状物料连续定量灌装食品加工等行业。关键词：颗粒物料；定量灌装；自动控制；可编程控制器，自动校秤ABSTRACTWiththerapiddevelopmentofsocialeconomicandtechnology,thedemandforequipmentofquantitativegranularmaterialsweighingandpackagingisgrowing，andstricttingwiththerequiredspeedandprecisionofmaterial
3、packaging.Accordingtotherequestsofrealitiesinproduction,anautomaticcontrolsystemofquantitativeweighingandpackagingisstudiedon.Andthebetterproposalisproposedtoimprovethespeedofpackagingandtheprecisionofweighing.UsingtheAD-4401weighinginstrumenttoweighanddisplaytheva
4、lueofmaterialweighing,andaccordingtotheoutputsignalofweightingcell,thataccomplishmaterialsquantitativeweighing.UsingPLCtocontrolthesequenceoffillingmovement,andtomatchrelevantexecutedriverdeviceinthedesign,thatrealizetheelectriccontrolofthefeedingforgranularmateria
5、l、thequantitativeweighingandsemi-automaticpackaging,andsoon.Designproposalofspecificsisdividedmaterielfeelingprocessintotwostage,withpneumaticsystemtodrivebigfeedvalveandsmallfeedvalve.Bytwicefeedingtoguaranteethespeedandprecisionofweighing,andtoachievethefunctiono
6、fovershootcorrection,thatimprovetheprecisionofquantitativepackaging.Andhavinggoodhumanmachineinterface,thatmakethesystemtoapplytodifferentofgranularmaterialquantitativepackaging.Inaddition,bythedesignofcorrelativeelectricdrawing、theselectionforcomponent、thedesignof
7、overallcontrolbyPLC,andcompileprogramforcontrolsystem，thesystemcanrealizethefunctionsofautomaticweighting、quantitativefeedinginprocessforautomaticcontrol,andcompletethedesigntask.Itcanbeusedinindustriesofchemicalindustry,medicine,makingrice,feed,andfoodprocessingin
8、thestateofloosegranularmaterialsforquantitativepackaging.Keywords：granularmaterials；quantitativepackaging；automaticcontrol；programlogic目录1绪论11.1称
