Laser Plotter Workpiece Alignment via Optical Recognition
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Solution Overview
Problem
Existing methods for positioning and engraving workpieces with laser plotters are complex for users, leading to inefficiencies in engraving quality and speed due to alignment issues and the need for frequent manual adjustments.
Innovation Solution
The method involves a laser plotter system that automatically recognizes the position and orientation of workpieces using identification features, adjusts parameters like engraving angle and depth, and stops the process if tolerance ranges are exceeded, allowing for manual intervention to ensure optimal alignment and quality, while simplifying the setup process by using a laser pointer to align with identification marks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If automatic recognition and positioning of workpieces is implemented, then positioning accuracy and engraving quality are improved, but device complexity increases due to additional sensors and processing requirements
Solution Approach 1:
The system performs preliminary recognition and positioning of the workpiece before the actual engraving process. The optical sensor detects identification features and determines workpiece position and orientation in advance, allowing the control unit to calculate optimal engraving parameters and adjust the laser path beforehand. This preliminary action ensures high positioning accuracy without requiring complex real-time adjustments during engraving.
Solution Approach 2:
The workpiece contains built-in identification features that enable the system to automatically recognize and position itself. The optical sensor reads these features directly from the workpiece, and the control unit automatically calculates the correct positioning and engraving parameters. This self-service approach eliminates the need for manual positioning and reduces device complexity by using the workpiece's own features for alignment.
2Manufacturing precision
If tolerance checking is implemented to stop engraving when parameters are exceeded, then engraving quality is improved, but productivity decreases due to process interruptions
Solution Approach 1:
The system continuously monitors workpiece position and orientation during the engraving process using optical sensors. The control unit compares the actual position against predetermined tolerance ranges and provides feedback by either adjusting the laser path in real-time or stopping the process if tolerances are exceeded. This feedback mechanism ensures high engraving quality while minimizing interruptions through automated corrections.
Solution Approach 2:
The system performs preliminary calculations of optimal engraving paths and parameters based on the detected workpiece position and orientation. By pre-planning the engraving path within acceptable tolerance ranges, the system can maintain high quality without frequent interruptions, as the path is designed to accommodate expected position variations.
3Ease of operation
If manual positioning and setup procedures are used, then ease of operation is maintained, but positioning accuracy and engraving speed are reduced
Solution Approach 1:
The workpiece includes built-in identification features that enable automatic recognition and positioning. The optical sensor reads these features directly from the workpiece, and the control unit automatically calculates the correct positioning and engraving parameters. This self-service approach eliminates the need for manual positioning while maintaining ease of operation, as the system handles all complex positioning tasks automatically.
Solution Approach 2:
The system replaces manual mechanical positioning with an optical recognition system. Instead of requiring operators to physically align and measure workpiece positions, the optical sensor automatically detects identification features and the control unit calculates precise positioning. This substitution of mechanical operations with optical and computational methods maintains operational simplicity while dramatically improving positioning accuracy and engraving speed.
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
This approach enhances engraving quality, reduces downtime, and simplifies the handling of workpieces by automating the recognition and adjustment of identification features, allowing for faster and more accurate processing without constant user intervention.
Implementation Method 1
a laser plotter with an optical unit for detecting the register marks
Implementation Method 2
at least one laser unit for processing a workpiece (7) with a laser beam (10)
Data Source
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AI summary
The invention describes a method for engraving, marking, labeling, and/or cutting workpieces (7) with applied graphics (17), in particular a graphic area, comprising the following steps: - Creating and/or loading a processing job (16) with a graphic (17) or a graphic area and recognition features (28) on a display element (15), in particular a computer (15); - Applying the recognition features (28) and the graphic (17) or the graphic area to the workpiece (7); - Arranging the workpiece (7) in a processing area (8) of a processing device (1), in particular a laser plotter (2) with an optical unit (30) for capturing the recognition features (28); - Capturing or detecting the workpiece (7), in particular the recognition features (28), in order to determine the position and orientation of the workpiece (7), in particular the applied graphic (17) or graphic area.of the graphic area, in the processing area (8); - carrying out the processing process after successful recognition of the workpiece (7), in particular the graphic (17) or the graphic area, characterized in that after recognizing the position or orientation of the workpiece (7) and/or the graphic (17) or the graphic area, an engraving verification process is carried out, in which, based on the determined position or orientation of the graphic (17) or the graphic area and/or the workpiece (7), it is determined whether an engraving or inscription, in particular an engraving process in the defined engraving area (48), is possible or not.