A welding robot and injection molding part positioning simulation linkage method

By combining a 4K resolution dual-camera visual positioning system with RobotStudio simulation software, high-precision positioning and welding path optimization were achieved during the injection molding part welding process. This solved the problems of insufficient positioning accuracy and inaccurate welding path planning during the injection molding part welding process, and enabled multi-dimensional weld quality monitoring and full-process data traceability, thereby improving welding accuracy and process continuity.

CN122508982APending Publication Date: 2026-08-04TIANJIN CITY JIUYUE TECH
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Patent Information

Application Number
CN202610620127.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-08
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Insufficient positioning accuracy during the welding process of injection molded parts, lack of precise simulation verification for welding path planning, single weld quality inspection, lack of multi-dimensional monitoring, disconnect between positioning and welding process data, and inability to provide timely warnings lead to unstable welding accuracy.

Method used

A 4K resolution dual-camera vision positioning system is adopted, combined with a weighted iterative algorithm to accurately identify deviations in injection molded parts. RobotStudio simulation software is built for path optimization, and multi-dimensional weld quality monitoring is configured to achieve dynamic linkage between positioning and welding. Full-process data traceability is achieved through PLC and industrial IoT.

Benefits of technology

It achieves high-precision positioning for injection molded part welding, smooth optimization of welding path, multi-dimensional weld quality control, and full-process data traceability, with welding accuracy stabilized at ±0.1mm and improved process continuity.

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Abstract

This invention relates to the field of welding technology and discloses a method for linkage between a welding robot and the positioning simulation of injection molded parts, comprising the following steps: Step 1: Constructing a dual-camera vision positioning system with a resolution of 4K and a positioning accuracy of ±0.05mm. After pre-processing and cleaning the injection molded part, it is placed on a positioning worktable. Image data of three preset feature holes on the injection molded part are simultaneously acquired by the dual cameras. The diameter of the holes is 5mm and the positional tolerance is ±0.1mm. Step 2: Performing grayscale enhancement and edge extraction processing on the acquired image data to accurately identify the center coordinates of the three feature holes. Combining the dual-camera calibration parameters, the translational deviation and rotational angle deviation of the injection molded part in the X and Y axes are calculated to generate a complete positioning deviation dataset. Step 3: Selecting RobotStudio simulation software. This invention achieves precise positioning: the 4K dual-camera vision system combined with a weighted iterative algorithm achieves a positioning accuracy of ±0.05mm, effectively avoiding glare interference and accurately capturing the deviation data of the injection molded part.
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