基于PLC自动上下料系统设计的毕业论文1引言··························································································· ······································································································ ······························································･ ･･････････････････････････････････････････････････････････････ ································································1························· ······································································································ ····················1 1. 1.2 自动上下料系统的应用････････････････････････････････････････････････････････････････････････････････････ ····················································································································································· ····························1 1.3 基于PLC的自动送料装置介绍·······································1 ······································································································ ················· 2 2 PLC简介····························· ······································································································ ·······················································･ ·······································································································································································································································································3 ······································································································ ························································ ·····················································･ ····················································································································································· ···················································· ······································································································ ······················· 3 2.1.2 PLC控制思路············· ····················································································································································· ···················································································································································································································3 ······································································································ ······································································································· ······································································································ 5 2.3 PLC电源················································································································································································· ····················································································································································· ····················································· ············· ······································································································ ········································6 3.1 概述····· ･･････････······························································································· ······································································································ ·······6 3.2 控制要求·································· · ··········································6 3.3 系统作品················································· ････････････7 3.4 工作原理･････····················· ······································································································ ································8 4 PLC控制系统设计·············· ··································9 4.1 PLC控制系统设计步骤·· ･･････9 4.2 设计中的PLC控制系统语言････·························· ···························· 9 4.3 程序设计与调试············ ······································································································ ······································································································ ······································10 4.3.1编程……················································································································ ··········································································································· ····················································································································································· ··················································· ······················11··························· ··············· ······································································································ ···········12 5.1 电动机介绍····························· ······································································································ ······················· 12 5.1.1 普通异步电动机･･･････････ ······························································································································································································································································12 5.1.2 普通同步电机·················································· ········································································································ ·····13 5.1 .3 变频电机································· ··········································13 5.2 电机选择·················································· ·········································································································· ･････14 5.3 减速机的组装与调整･････··························· ··········································15·····················································15······· ······································································································ ······································································································ ····································1 76.1 结构a皮带输送机的工作流程····································································································································· ······································································································ · ･･･17 6.1 .1 传送带･･････････････････････････････････････････････････････････････････････････････ ·························17 6.1.2 传送带的种类·········· ·········································································································································································································································································································· · ······································································································ ···················································· 18 6.2装卸装置·········································································································································································· ······································································································ ··············18 6.3 支撑装置··························· ········································19 6.4 驱动辊······························································································································································································19 ······································································································ ···················································· ････ 19 6.5 联轴器･･････································ ······································································································ ································20 6.6 基本计算和选择n········································································································ ········20 6. 6.1 投放量计算 ·························· ···········20 6.6.2 可选的...······················· ······································································································ ················7检测设备･････ ･････ ･ ··················································· ······································································································ ··························23 7.1 传感器··················· ············································································································ ·············23 7.1. 1 传感器的定义···························································23 ･････23 7.1.2 传感器的分类····························· ······································································································ ···············24 7.2 选择温湿度传感器时的注意事项･･･････25 7.3 定时器･･･ ······································································································· ······································································································ ········································································································· ······· ············································································･ 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······································································································ ····················································･ ････････････････････· ······································································································ ····················································· ····················································································································································· ····················································································································································· ····················································································································································· ····················································································································································· ····················································································································································· 31 附录A(程序流程图)··············································································································································· ······································································································ ·······31 附录B（硬件接线图m)································································································································································································· ·················································································································································································· ･････････････････････････････････････････････ ･ ･32附录C（梯形图)······························································································································································································································································································ ······································································································ ··················································································･ ··················································· ··············妖用于工业生产生产线自动送料装车系统，尤其是我国加入WTO后，自动线得到了更广泛的应用。
PLC问世以来，虽然时间不长，但发展迅速。从网络的发展来看，可编程控制器与其他工业控制计算机组成大型控制系统是可编程控制器技术的发展方向。制造业的控制主要以离散控制为主生产线自动送料装车系统，PLC是该领域控制系统的首选。制造企业为了提高劳动生产率和产品质量，必然会大量采用PLC，从而为PLC在自动化生产线行业的应用提供了广阔的前景。 1. 1 自动上下料系统介绍1. 1. 1 自动上下料系统特点1.生产效率高，自动化程度高，满足人们的燃眉之急日常生活中，各类能源材料必须大量生产和运输，需要各种高生产率、自动化程度高的机械系统。 2. 复杂的结构和作用 这是因为自动上料和上料系统不仅采用机械传动原理系统的各种机构。也是输送带设计和各种电气自动化检测和控制系统的选型。 3. 振动问题突出现代自动线越来越高速化，机械的高速化和传动带的重载所引起的振动也影响着传动和生产率的提高。 1. 1. 2 自动上下料系统的应用 自动上下料系统是用于物料输送的流动水...