Method, device and system for automatically identifying welding seam position based on square tube

Abstract

In order to solve the problems existing in the prior art, the invention innovatively provides an automatic identification method based on a square tube weld joint position, and the method comprises the steps: image collection equipment collects and stores pictures of the cross section of a square tube; the image processing equipment equally divides the collected pictures into nine blocks, numbersthe nine blocks, and selects at least four pictures containing internal side surfaces to be stored respectively; the image processing equipment respectively obtains the contour length of the welding seam and / or the total contour area of the welding seam in the at least four selected pictures containing the inner side surfaces; determining the number of the picture where the weld joint is located according to the contour length of the weld joint in the picture and / or the total contour area of the weld joint. The invention further provides a device and a system for automatically identifying theposition of the welding seam based on the square tube. The problems that time and labor are wasted and the positioning and rotating efficiency is low when square pipe welding seams are judged manuallyare solved, errors existing in the manual observation and judgment process are avoided, the accuracy of square pipe machining on the numerical control laser pipe cutting machine is improved, the machining efficiency is improved, and the labor cost is reduced.

Description

technical field [0001] The invention relates to the fields of machine vision and automatic control, in particular to a method, device and system based on automatic identification of the welding seam position of a square pipe. Background technique [0002] At present, with the development of image processing technology, it is possible to process images by installing programming software and machine vision libraries in PCs, and various shapes on the images can be detected through various image processing methods. [0003] When processing square pipes on a CNC laser pipe cutting machine, the position of the processed shape needs to be determined according to the position of the weld seam when the pipe is cut. The position of the weld seam of each pipe is uncertain in the pipe bundle, so it is necessary to judge the weld seam before processing On which side of the square tube. [0004] In the current technical application, it is necessary to observe the position of the weld sea...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention innovatively proposes a method, device and system based on the automatic identification of the weld position of square pipes, which solves the time-consuming and labor-intensive problems of manual judgment of the weld seam of square pipes and the low efficiency of positioning and rotation. problems, and avoid the errors in manual observation and judgment, improve the accuracy of square tube processing on CNC laser tube cutting machines, improve processing efficiency, and reduce labor costs

Images