Engraved Code Detection via Quadrilateral Corner Dents
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Solution Overview
Problem
Existing engraved codes, particularly those formed by conical dot holes, are not optimally detectable due to unevenness and changes in apparent darkness/lightness, leading to incorrect reading.
Innovation Solution
The proposed solution involves forming an engraved code with a plurality of dot dented portions, each coated with a layer, featuring a quadrilateral prior stage opening peripheral edge with corner dented portions at acute angles, which allows for better detection by maintaining shape consistency before and after coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conical dot holes are used for engraved code, then the code can be formed on component surface, but detection accuracy deteriorates due to unevenness and changes in apparent darkness/lightness
Solution Approach 1:
Corner dented portions are formed in advance on the prior stage opening peripheral edge portion before final coating. This preliminary action ensures that when coating material is applied, it naturally flows into these corner regions, preventing accumulation and maintaining consistent quadrilateral shape appearance after coating, thereby ensuring high detection accuracy.
Solution Approach 2:
The corner dented portions create local variations in the surface geometry at specific corner positions. This local quality change allows coating material to be selectively directed to corner regions, ensuring uniform coating distribution and maintaining the quadrilateral shape characteristics necessary for accurate optical detection.
2Reliability
If coating layer is applied to dented portions, then appearance and durability are improved, but shape distortion occurs at corner positions causing detection errors
Solution Approach 1:
The corner dented portions are formed before coating application. This preliminary structuring ensures that coating material naturally fills these corner regions during the coating process, preventing the coating from accumulating or distorting the corner shapes. The result is maintained quadrilateral shape accuracy even after coating, ensuring reliable code detection.
3Ease of manufacture
If conventional dented portions are used, then manufacturing is simple, but coating material accumulates at corner positions creating detection errors
Solution Approach 1:
Corner dented portions are formed as part of the initial dented portion creation process using standard laser processing. This preliminary action integrates seamlessly into existing manufacturing workflows without requiring complex additional steps, while effectively preventing coating material accumulation at corner positions and maintaining high detection accuracy.
Data Source
AI summary
An article allows an engraved code to be detected. The engraved code includes a plurality of dot dented portions defined on the article. Each of the dot dented portions has a quadrilateral pyramid shape with a coating layer on a prior stage dented portion having a quadrilateral pyramid shape. Corner dented portions dented at acute angles outward along a diagonal direction are defined at four corner positions of an opening peripheral edge portion of the prior stage dented portion.