Simulation Research On Automatic Bobbin Yarn Printing And Dyeing Production Line Based On Unity3D

The application of the fully automatic bobbin yarn printing and dyeing production line solves the problems of high manual dependence and poor working environment of traditional printing and dyeing lines,and improves the quality of bobbin yarn printing and dyeing.Due to the introduction of package yarn loading robots and automated equipment,the operation and design of fully automated production lines need further research and improvement.In order to help technicians quickly analyze the key influencing factors in the printing and dyeing stage of the production line,quantitatively study the process and scheduling strategy of the package yarn loading robot and accurately estimate the production line output during the production line design process,thereby further optimizing the production line.But the problems of production and technology are difficult to carry out based on the actual production line.Therefore,this paper proposes a method of developing a production line simulation system to quantitatively study the production line and assist the production line design.The main research contents of this article include the development of the production line simulation system,the research on the key influencing factors of the printing and dyeing stage,the research of the package yarn loading robot,and the establishment of the production line production model.The specific contents are as follows:First,the process and layout of the fully automatic package yarn printing and dyeing production line are analyzed,the summary and classification of the factors affecting the production line are completed,and the idea that package dyeing stage is the core of production line is proposed.And this paper mainly studies the influencing factors and scheduling strategies in the printing and dyeing stage and the establishment of production line output estimation model.Secondly,based on the Unity3 D virtual reality engine,combined with the UI framework,singleton mode and state machine principle,a production line simulation system with quantitative research functions was developed,and tools and base classes commonly used in production line simulation were established.The production line simulation system can complete the simulation of the bobbin yarn production line of any size,provide multiple viewing angles to display the production line simulation process,record production data to a database in real time,and are easy for human-computer interaction.Because of adopting the object-oriented development method,the system is highly scalable and easy to maintain.Then,the key influencing factors that affect the printing and dyeing stage of the production line are analyzed.An orthogonal test scheme is designed with the dyeing tank utilization as an indicator and the production line simulation system is used to simulate the production.The mean and range analysis of the simulation results is used to obtain the color matching time as the most sensitive factor that affects the utilization of the dyeing tank,and further research gives a function expression between the percentage reduction of color matching time and the utilization rate of the dyeing tank.The size of the buffer area is the focus of the design of the production line,so the design scheme of the buffer area is obtained by combining the simulation system and orthogonal experiments.Subsequently,the speed,failure and scheduling strategy of the newly introduced package yarn loading robot for the production line were specially studied.Since the speed of the robot will affect the utilization of the dye tank,the control variable method is used to study the speed selection scheme of the package yarn loading and unloading robot.The plan indicates that the utilization rate of the dyeing tank increases with the acceleration of speed,but when the speed of the bobbin yarn loading and unloading robot is higher than 1.6m / s,increasing the speed has little effect on the utilization rate of the dyeing tank.In addition,based on the simulation system,the effect of the failure period of the package yarn loading and unloading robot on the utilization rate of the dyeing tank is studied,and the conclusion that the earlier the occurrence of the fault in the dyeing process has a greater impact on the utilization rate of the dyeing tank is concluded.Then,the dyeing tank utilization rate was used as an indicator to establish a theoretical model of the package yarn loading and unloading robot loading yarn.The elite ant system algorithm was used to optimize the solution.The traditional scheduling algorithms and the optimized scheduling algorithm using ant colony algorithm are tested in the simulation system from local and global perspectives.The results show that the optimized scheduling algorithm with ant colony algorithm performs better,and the results of global simulation research show that using ant colony algorithm to optimize Compared with the traditional scheduling algorithm,the latter scheduling algorithm improves the utilization rate of the dyeing tank by 0.33%.Finally,aiming at the output estimation during the design of the production line,considering the suggestions of the enterprise and the expe rience summarized in the simulation process,11 main factors affecting the output of the production line were proposed.The orthogonal production was designed and the simulation production was completed in the simulation system.In the process of modeling with support vector regression,the genetic algorithm was used to optimize the parameters that affect the accuracy of the SVR model.The data obtained by the simulation system was then used to complete the training of the yield model.The test set results showed that the model was accurate.The rate can reach more than 88.9%,so the production line output can be estimated in advance by this model in the process of designing the production line.