毕业设计（论文）-PLC控制自动送料系统设计精选.doc

PLC控制自动送料系统设计 摘 要PLC controlled automatic feed system design Abstract PLC PLC is microprocessor-based, integrated computer technology, Control and communication technologies developed from a new industrial control devices. It is simple in structure, programming convenience, high reliability, which has been widely used industrial process and the location of the automatic control. The programmable controller output two lines pulses to stepping motors drives to drive the two stepping motors drives on beam and vertical axis; direct current motors drive the rotation of the base and the hand; sensors send signals of location to the mainframe, and the mainframe sends directive to control the extension and contraction, up and down, moves location; the mainframe send signals to control the opening and closing of the hand to carry objects. Related parameters can be changed according to request of the changes of the objects and movement flow at any time change the relevant parameters in the design, so it has great flexibility and operability . Key words: Programmable controller; Robot arm; Sensor 第一章 设计系统任务分析及选型 第一节 系统任务分析 如下PLC自动控制，按下起动按钮后，机构从“原点”开始，自动完成一个工作循环过程。即机械手从原点开始下降到A点夹紧工件，带工件上升后右移下降松开工件，然后按原路返回“原点”。再次按下按钮，完成下一次动作。按上完成5个工作循环过程时，即将5个工件放进小车后，按下小车启动按钮，小车开始自动从B点移动到C点，完成装料卸料过程。卸完料然后自动返回B点装料。按下停止按钮，机构将停止操作。 起动 左限X404（SQ4） 左行Y434 X400 （SQ2） 右行Y433 （SQ3） 上限X402 上限X402 右限X403 下降Y430 上升Y432 （SQ1） 下限X401 下限X401 A点 B点 夹紧 放松 Y431接通 Y431断开