Complex Glazing Cutting Plans Using Layer-Specific Defect Maps
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Solution Overview
Problem
Current methods for cutting complex glazing products, such as laminated glass, do not differentiate between defects in glass sheets and those in other constituent elements, leading to unnecessary losses as all defects are treated equally and no cutting line can pass through their exclusion zones.
Innovation Solution
A method and system for generating a cutting plan that distinguishes between defects in glass sheets and those in other components, allowing cutting lines to pass through exclusion zones of non-critical defects in layers other than glass sheets, such as interlayers, by creating and combining defect maps and using criticality levels to optimize the cutting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all defects in complex glazing products are treated equally with exclusion zones, then cutting safety is improved, but material loss increases
Solution Approach 1:
The patent segments defects into two distinct categories: glass sheet defects and non-glass component defects. This segmentation allows different exclusion zone rules to apply to each category, permitting cutting lines to pass through exclusion zones of non-critical defects in interlayers or frames while maintaining safety by excluding glass sheet defects that could cause breakage during cutting operations.
Solution Approach 2:
The patent applies local quality by assigning different criticality levels and exclusion zone requirements to defects based on their location and type. Glass sheet defects receive strict exclusion zone treatment to prevent cutting-induced breakage, while non-glass defects may have relaxed or no exclusion zones, allowing optimized cutting paths that minimize material waste while maintaining local cutting safety where needed.
2Reliability
If cutting lines avoid all exclusion zones, then defect avoidance is improved, but cutting efficiency deteriorates
Solution Approach 1:
By segmenting defects into glass-related and non-glass-related categories, the system can selectively apply exclusion zone constraints only where necessary for cutting safety, allowing cutting lines to efficiently pass through areas with non-critical defects while maintaining high defect avoidance for glass sheet defects that could cause breakage.
Solution Approach 2:
The patent changes the parameter of exclusion zone applicability based on defect type and criticality level. This parameter change allows the cutting plan to dynamically adjust which exclusion zones are enforced, optimizing the balance between defect avoidance and cutting efficiency by relaxing constraints for non-critical defects while maintaining strict avoidance for critical glass defects.
Data Source
AI summary
A method for generating a cutting plan of a complex glazing product including a glass sheet and a layer other than a glass sheet, the method including obtaining a map of the defects of the glass sheet; obtaining at least one other defect map, the defects of the other map not being defects of a glass sheet; each of the maps including, for each of its defects, a position of the defect, a size of the defect, and a criticality level of the defect; generating a cutting plan of the complex glazing product using the maps and a specification taking into account the criticality levels, the cutting plan including a cutting line and being such that none of the cutting lines passes through an exclusion zone of the defect of the glass sheet, wherein a cutting line passes through an exclusion zone of a defect of the other map.