Development Of Positioning And Alignment System For Rigid Box Based On Machine Vision

Up and bottom cover is a widely used rigid packaging box in the packaging industry.It is its low cost of production,automated assembly line processing and custom shape design and other great advantages,It is by the majority of electronic products packaging industry's favor.Especially in recent years,the rapid development of highly competitive electronic products industry chain on the world to cover the huge market demand for packaging,the development prospects of heaven and earth cover bright.But limited by the impact of incoming and processing technology factors,the current market design of heaven and earth cover box registration system is not aligned accuracy is not high,bit long time,the problem of low efficiency is a single function,Industrial cameras and robots with the calibration process is complex,cumbersome,on-site operator of the technical level of higher requirements.Therefore,it is very important to study the design of positioning,accurate,efficient and simple calibration process.The main contents of this paper: Firstly paper was introduced the development of the packaging and printing industry,as well as the development of machine vision technology in the field of packaging and application;followed by the development program for the movement control system hardware selection and image acquisition module hardware system selection;Again the most important The visual algorithm implementation process.First,through the custom design of the calibration plate on the two-camera calibration,access to dual-camera image coordinates and the mechanical platform of the world coordinate system between the corresponding relationship.Then the PLC controls the conveyor belt to convey the paper to the camera field of view,controls the camera through the I/O external trigger level signal to obtain the current latest single frame picture,while the four-axis robot moves the up and bottom cover to the wait bit and sends the Ready signal to Visual program side,the visual system through the template to match the way to locate the paper corner position.And transmits the deviation amount of the X-axis,the Y-axis and the rotation angle ? with respect to the original coordinate point to the four-axis robot by the network communication protocol,and adjusts the position in accordance with the X-Y-? offset adjustment position After the completion of the camera,and then through the I/O to send high-level signal to the PLC control belt line to continue the next day and floor of the fit action.Finally,the system program to Visual Studio 2010 as a development tool to HALCON visual algorithm library based on the use of object-oriented thinking based on the C++ language prepared by the positioning of the system software,and the system work processes and methods of doing a detailed Elaborated.The system through the actual production line application and positioning accuracy of the repeatability of verification,and has achieved large-scale production applications.The four-axis robot based on dual-camera visual guidance has good robustness,stability and practicability.