Coating Path Correction for Seamless Adjacent Paint Tracks
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Solution Overview
Problem
The use of print heads in painting technologies results in insufficient path accuracy when applying adjacent paint tracks, leading to gaps or overlaps, especially when tracks are applied by different robots or in opposite directions, which is exacerbated in continuous pattern applications where small positioning errors are visually disturbing.
Innovation Solution
A path correction method that defines a reference path, measures path errors between paint tracks and the reference path, and calculates correction values to adjust the paint track positions, using optical measurement systems and artificial gaps to enhance detection and accuracy, allowing for precise alignment of adjacent paint tracks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If print heads are used as application devices to achieve high application efficiency and minimal overspray, then coating efficiency is improved, but path accuracy deteriorates leading to gaps or overlaps between adjacent paint tracks
Solution Approach 1:
The patent applies preliminary action by measuring the actual paint track positions and calculating correction values before the final coating process. The system determines path errors between adjacent paint tracks and computes correction values that are stored and applied in subsequent coating operations, ensuring high precision without compromising the high application efficiency of print heads.
Solution Approach 2:
The patent implements feedback by using optical measurement systems to detect the actual positions of paint tracks and feed this information back to the control system. The control system processes this feedback data to calculate correction values that adjust the robot paths, thereby maintaining both high productivity and manufacturing precision through continuous error compensation.
2Productivity
If adjacent paint tracks are applied by different painting robots or in opposite directions to increase productivity, then coating speed is improved, but path accuracy deteriorates due to insufficient positioning precision at seams
Solution Approach 1:
The patent uses an intermediary approach by introducing a reference path that serves as a common reference for multiple painting robots. The reference path acts as a mediator that enables different robots working in opposite directions or simultaneously to maintain precise alignment at seams, allowing high productivity without sacrificing positioning precision.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the robot paths based on measured path errors. The system modifies positioning parameters such as X and Y coordinates of paint track centers based on detected deviations, enabling seamless joining of paint tracks applied by different robots or in opposite directions while maintaining high coating speed and precision.
3Ease of manufacture
If continuous patterns are applied instead of monochrome coating to enhance visual appearance, then product quality is improved, but path accuracy requirements increase making small positioning errors visually disturbing
Solution Approach 1:
The patent replaces the mechanical positioning system with an optical measurement and computational correction system. Instead of relying solely on mechanical precision of robots, the system uses optical sensors to detect actual paint track positions and computational algorithms to calculate correction values, thereby achieving the high path accuracy required for continuous pattern applications while maintaining ease of manufacture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method ensures accurate alignment of paint tracks, preventing gaps or overlaps, and maintaining a continuous coating or pattern, achieving the target accuracy of 0.1 mm or better, thereby improving the overall coating quality and visual consistency.
Implementation Method 1
the interfering path error at the seam between the first paint track and the adjacent second paint track is optically measured
Data Source
AI summary
The disclosure relates to a path correction method for correcting paint tracks when coating a component (e.g., motor vehicle body component) with a coating agent (e.g., paint). The path correction method includes:Defining a reference path,applying a first paint track of the coating agent to the component, where the first paint track and the reference path run adjacent to one another and ideally adjoin one another without a path error at a seam,determining the interfering path error at the seam between the first paint track and the adjacent reference path, anddetermining path correction values for correcting the course of the first paint track in a subsequent coating operation, the path correction values being determined as a function of the path error.Furthermore, the disclosure comprises a corresponding coating method and a correspondingly adapted coating system.