Design And Simulation Of Assembly Line Of Dishwasher Liner Based On Robot

With the development of the home appliance industry and the improvement of living standards,more and more household appliances have entered our lives,including dishwashers.In recent years,the market demand for dishwashers has grown rapidly,and it is an inevitable trend for companies to increase the output of dishwashers and increase the productivity of dishwashers in order to meet market demands.Based on the assembly project of dishwasher liner of a enterprise,this paper designs a dishwasher liner assembly production line based on robot for the assembly of dishwasher liner of this enterprise,and realizes the automatic production of the assembly of dishwasher liner by using industrial robots instead of manual moving parts.Firstly,through the understanding and analysis of the assembly process of the inner liner of dishwasher in this enterprise,combined with the development status of robot technology at home and abroad,the scheme of the assembly line of the inner liner of dishwasher is put forward,and the assembly process of the inner liner is designed.According to the actual needs of the assembly process of the inner liner and the size of the workpiece,the end effector of the robot is designed,and the layout of the assembly line of the inner liner is designed.According to the task of the robot,the trajectory of the robot is designed and the interference of the robot is analyzed.Secondly,on the basis of the existing brands and types of robots at home and abroad,according to the overall process requirements and the principle of robot selection,the robot is selected,the basic structure and performance parameters of the robot are known,and then the robot linkage coordinate system and kinematics equation are established according to the parameters,and the forward and backward kinematics are analyzed and simulated five times.The polynomial interpolation is used to plan the trajectory of the joint space,and the simulation analysis is carried out to obtain the curve of the joint angle,angular velocity and angular acceleration of the robot.Then,through the SOLIDWORKS software,the assembly equipment and the conveyor line involved in the dishwasher liner assembly line are three-dimensionally modeled.Based on this,the motion mechanism of the assembly equipment is established by using the DELMIA simulation software,and the motion simulation process is added to establish the simulation sequence.Finally,the simulation time is optimized to realize the overall motion simulation of the dishwasher liner assembly line,and the simulation of the production cycle is analyzed and compared with the production beat of the existing manual handling line.The longest process time was reduced from 32 seconds to 23.1 seconds,and the balance rate was increased from 80.2% to 91.77%.Finally,the control system of the dishwasher inner assembly line is designed.Combined with the CC-LINK field bus technology,the overall structure of the control system is designed,the control resources are distributed,and the bus communication between the robot and the PLC is designed.The trajectory is designed and written for the robot,and the human-computer interaction interface is designed.The human-machine interaction interface can be used to view and operate the production line.