Design Of Automatic Control System For Paper And Yarn Compounding Bag Bottom-pasting Machine

Paper yarn composite bag has the characteristics of high strength,aging resistance,high temperature resistance,etc.It can replace the use of plastic bags in a certain range of use.It is currently the international mainstream environmental protection packaging bag.At present,the bottom work of paper yarn composite bags in Chinese enterprises It is mainly done by manual operation by workers.This work method has too high labor cost and slow production efficiency.Therefore,the development of a control system for a paper yarn compound bag bottoming machine has very important application value.On the basis of analyzing the process flow and control requirements of the paper yarn composite bag bottomer,an automatic control system for the paper and yarn compounding bag bottom-pasting machine is designed.The main contents are as follows:(1)Overall control plan design.Through the analysis of the technological process and control requirements of the paper yarn compound bag bottoming machine,the overall scheme is determined,and the control scheme of each control subsystem is designed.(2)Main hardware selection and I/O port address allocation.According to the control indicators of the system,the important hardware devices in the control system are selected,the I/O port addresses of CPU and other expansion modules are assigned,and the system main circuit,other loops and PLC expansion module circuits are determined and designed.(3)Design of the control subsystem of the glue sticking valve.The technological process and working principle of the glue sticking valve are analyzed,the hardware of the glue sticking valve control subsystem is selected,and the software program is designed.(4)Design of heating control subsystem.Firstly,the structure of the heating device is introduced,secondly,the control scheme of the heating control subsystem is designed,and finally,the PID controller is applied and the PLC control program is written,and the test is carried out.(5)Design of smoothing control subsystem.The structure of the smoothing device is analyzed,and the precise position of the device installation and the speed of the device motor are calculated.