Laser Etching Workpiece Tracking via Integrated Label Imaging
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Solution Overview
Problem
Current manufacturing processes for laser etching of customized images on workpieces are complex, labor-intensive, and prone to errors due to the need for separate printers for product tracking labels, which increases costs and complexity, and manual pairing of labels with workpieces can lead to mixing issues.
Innovation Solution
A system and method that integrates laser etching of both product images and label images on workpieces using a single laser etching apparatus, where a computer generates label images, and a laser head with adjustable power levels scans the workpieces and labels to produce customized patterns, eliminating the need for separate tracking label printers and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate printers are used for tracking labels, then product tracking capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the product image printing function and the tracking label printing function into a single laser etching apparatus. The laser head can switch between etching the product image on the workpiece and etching the tracking label on the accompanying card, eliminating the need for separate printers and reducing device complexity while maintaining tracking capability.
Solution Approach 2:
The laser etching apparatus is designed to perform multiple functions: it can etch product images on workpieces and etch tracking labels on cards. This multi-functional design allows one device to replace what previously required multiple specialized devices, reducing overall system complexity.
2Ease of operation
If manual pairing of labels and workpieces is performed, then flexibility is maintained, but productivity and accuracy decrease
Solution Approach 1:
The system creates a visual copy of the product image on the tracking label by etching a thumbnail version of the same image that appears on the workpiece. This visual copying enables rapid visual matching between workpieces and their corresponding labels, dramatically improving pairing speed and accuracy while maintaining operational flexibility.
3Reliability
If separate printers are used for tracking labels, then tracking functionality is achieved, but manufacturing cost increases
Solution Approach 1:
The patent merges the tracking label printing capability into the existing laser etching apparatus, eliminating the need to purchase and maintain separate printing equipment. This consolidation reduces capital investment and ongoing operational costs while preserving full tracking functionality.
4Device complexity
If visual matching is used for pairing labels and workpieces, then simplicity is maintained, but accuracy decreases
Solution Approach 1:
By etching a visual thumbnail copy of the product image on both the workpiece and its corresponding tracking label, the system creates a unique visual signature that enables highly accurate visual matching. This approach maintains simplicity by using human visual recognition but dramatically improves accuracy compared to matching generic labels without distinctive images.
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 solution simplifies the process, reduces errors, and increases throughput by allowing simultaneous etching of product and label images on workpieces in a batch, reducing labor and costs while maintaining high accuracy and aesthetic quality.
Implementation Method 1
a laser head that can emit a laser beam... the laser head scans across the workpiece to etch the workpiece at the first power level in pixel-wise fashion to reproduce the product image on the workpiece
Implementation Method 2
a power controller that can set a first power level or a second power level of the laser beam at the laser head driver... etching the workpiece at the first power level... etching the label at the second power level
Data Source
AI summary
A method for matching and tracking workpieces in laser etching operation includes generating by the computer a label image that uniquely identifies the workpiece, moving a laser head to the workpiece, setting the laser head to a first power level by a power controller, etching the product image on the workpiece using a laser beam emitted from the laser head, wherein the laser beam is modulated at the first power level in accordance with a product image in a pixel wise fashion across the workpiece, moving the laser head to the label by the transport mechanism, setting the laser head to a second power level by the power controller, etching the label image on the workpiece using a laser beam emitted from the laser head, wherein the laser beam is modulated at the second power level in accordance with the label image in a pixel wise fashion across the label.