Laser Glass Scribing Without Sheet Flipping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for processing glass sheets require turning the sheet over after forming a scribe line, which is inconvenient and inefficient.
Innovation Solution
A method where a glass sheet is heated with laser light transmitted through it from one surface to the other, allowing scribe lines to be formed on both surfaces without the need to turn the sheet over, enabling cutting without flipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a scribe line is formed on the incident surface of laser light, then the scribe line can be formed effectively, but the glass sheet must be turned over after formation, reducing productivity
Solution Approach 1:
The patent applies dimensionality change by forming scribe lines on both the front surface (incident surface) and back surface (transmitted surface) of the glass sheet simultaneously through laser irradiation. This dual-surface approach eliminates the need to turn the glass sheet over, as the scribe lines are already present on both surfaces to guide cutting from either direction, thereby improving productivity while maintaining precision
Solution Approach 2:
The patent employs preliminary action by forming scribe lines on both surfaces of the glass sheet before the actual cutting operation. By pre-forming scribe lines on both the front and back surfaces through laser irradiation, the glass sheet is prepared in advance for cutting without requiring repositioning or turning during the process, thus enhancing efficiency
2Productivity
If laser light is transmitted through the glass sheet to form scribe lines on both surfaces, then turning the sheet is unnecessary, but power density distribution becomes complex
Solution Approach 1:
The patent applies parameter changes by systematically adjusting laser irradiation parameters including power density distribution, irradiation wavelength, and scanning speed to achieve effective scribe line formation on both surfaces. By optimizing these parameters, the system manages the complexity of power density distribution while maintaining high productivity through dual-surface scribe line formation
Solution Approach 2:
The patent employs feedback mechanisms to monitor and control power density distribution during laser irradiation. By implementing feedback control on the laser parameters, the system automatically adjusts power density to ensure uniform and effective scribe line formation on both the front and back surfaces, thereby managing the inherent complexity of the process
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
Enables precise cutting of glass sheets without the need to turn them over, improving efficiency and accuracy by generating tensile stress on both surfaces for scribe line formation.
Implementation Method 1
heating a part of a glass sheet with laser light which is transmitted through the glass sheet from a first main surface of the glass sheet to a second main surface of the glass sheet
Implementation Method 2
a part of the second main surface of the glass sheet is heated with the laser light to be expanded, and the scribe line is formed on the second main surface of the glass sheet by a tensile stress of the part expanded
Implementation Method 3
laser light which is transmitted through the glass sheet from a first main surface of the glass sheet to a second main surface of the glass sheet
Data Source
AI summary
A method for processing a glass sheet includes a scribing step of heating a part of a glass sheet with laser light which is transmitted through the glass sheet from a first main surface of the glass sheet to a second main surface of the glass sheet, and moving an irradiation position of the laser light on the glass sheet, thereby forming a scribe line on at least the second main surface of the glass sheet.