Control System Design Of Swing Arm Cement Bag Automatic Bagging Machine Based On PLC

In order to improve the packaging efficiency of powdered cement and get rid of the excessive dependence on manual bagging in the cement packaging process,this article hereby designs a PLC-based swing arm type cement based on the 8-nozzle rotary packaging machine.The automatic bag bagging machine has clarified the structure and process flow of the swing arm type automatic bagging machine,and analyzed its control difficulties.Combined with the requirements of low cost,high performance,and easy maintenance,the automatic bagging machine has been formulated.Technical parameters and control schemes.The swing arm type automatic bagging machine is an industrial automation production line that integrates precision machinery manufacturing,multiple sensor networks,and a composite drive system.It relies on a multi-mechanism,multi-station combination control method to complete the execution of each process link,according to the swing arm This article focuses on the design of the software and hardware of its control system,including the following aspects of work.(1)The executive mechanism of the swing arm type automatic bagging machine is introduced and analyzed in detail,and the entire work process is divided into three orderly connected work units according to the order of the workstations,namely: packaging bag conveying unit and packaging bag supply unit As well as the swing arm bagging unit,the corresponding sequential logic control algorithm is designed according to the working characteristics of each unit.(2)According to the meshing characteristics in the bagging process,the kinematics analysis of the swing arm bagging mechanism is carried out.Based on the size of the planar four-bar mechanism,the position analysis,velocity analysis and acceleration analysis of the end mechanism of the robotic arm are carried out using the vector method.An exact kinematics model was established,and numerical simulation was carried out through simulation software.The results verified the reliability of the model and provided a theoretical basis for the design of the motion control system.(3)The equipment hardware was selected,the related circuit design was completed,a complete sensor network system,pneumatic and vacuum system,variable frequency drive system and servo drive system were constructed,and finally a hierarchical control centered on "PLC+HMI" was built.System hardware platform: The industrial layer uses a programmable logic controller(PLC)as the core,with sensor modules,drive modules,etc.,to complete the collection of equipment signals and control the execution of related actions;the monitoring layer uses the touch screen(TPC)as the core,Combine the alarm module and the main command module to form a human-machine interaction system(HMI),which establishes a communication connection with the PLC device via Ethernet communication to meet the user’s monitoring and operation functions of the device.(4)The PLC control program of the automatic bagging machine was developed using STEP-7 Micro/WIN SMART software,and the design of the main program and subprograms was completed by the structured programming method,and the application of PID algorithm instructions in the control system was realized.Finally,using the MCGS embedded version of the configuration software to design the touch screen monitoring screen to meet the real-time human-computer interaction and online parameter setting and other functions.The debugging and operation analysis show that the automatic bagging machine control system designed in this paper is stable and reliable,easy to operate and maintain,and can operate stably for a long time in a high dust environment,and realizes bag feeding,bag removal,bag storage,bag removal,Automatic control of continuous actions such as bag opening and bagging.The bagging success rate exceeds 98.4%,and the bagging speed reaches the effective expected value,which meets the production needs of the enterprise.The system realizes the user’s remote control of the automatic bagging machine through the man-machine interface.The control greatly improves the working environment,completely frees the cement bagging workers from the dust-filled packaging workshop,provides a favorable solution for the automatic bagging technical problems of the rotary cement packaging machine,and improves the intelligence of small and medium-sized cement companies The level of chemical production management has good application promotion value.