Glass Substrate Breaking Apparatus with Air Buffering
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Solution Overview
Problem
Conventional breaking apparatuses for glass substrates often result in scribing failures, leading to incomplete cuts and increased contamination due to the forced breaking of glass substrates, which reduces productivity and yield in the manufacturing of flat panel displays.
Innovation Solution
A breaking apparatus with an air buffering structure, featuring a breaking bar connected to a linear driver, buffer cylinders, and linear bushes, which applies a controlled impact load to prevent crack spreading and complete breakage during the cutting process, ensuring high substrate quality and efficient removal of trim.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional breaking bar is used to forcibly press the glass substrate, then the cutting process can be completed, but crack spreading occurs causing complete breakage of abnormally scribed substrates
Solution Approach 1:
The patent introduces a buffer between the breaking bar and the glass substrate that provides beforehand cushioning. This buffer absorbs excess impact energy and prevents crack propagation that would lead to complete substrate breakage, while still allowing sufficient force to be applied to complete the cutting process for properly scribed substrates.
Solution Approach 2:
The patent changes the physical state and properties of the buffer material to optimize its cushioning effect. By selecting appropriate buffer materials with specific elasticity and damping characteristics, the system can adapt the level of force transmission to prevent substrate breakage while maintaining cutting effectiveness.
2Ease of operation
If the same breaking force is applied to all substrates, then the breaking process is simple, but abnormally scribed substrates suffer complete breakage
Solution Approach 1:
The buffer acts as an intermediary element between the breaking bar and the glass substrate. It mediates the force transmission, providing cushioning protection to the substrate while still allowing the breaking operation to proceed. This intermediary layer enables the system to handle both normally and abnormally scribed substrates without requiring complex control mechanisms.
3Ease of manufacture
If complete breakage occurs during cutting, then the trim is removed, but glass particles contaminate the substrate surface
Solution Approach 1:
The buffer provides beforehand cushioning that prevents the complete breakage of abnormally scribed substrates. By absorbing excess impact energy before it reaches the substrate, the buffer eliminates the generation of glass particles that would otherwise contaminate the substrate surface, while still allowing proper trimming of normally scribed substrates.
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
The apparatus effectively prevents crack spreading and complete breakage of abnormally scribed glass substrates, maintaining high productivity and cleanliness, while ensuring high-quality cuts on normally scribed substrates by adjusting pressure and tip geometry for optimal cutting performance.
Implementation Method 1
a plurality of buffer cylinders longitudinally mounted on the breaking bar and each including a hollow cylinder body generating pressure therein
Data Source
AI summary
Disclosed herein is a breaking apparatus for glass substrates. The breaking apparatus includes a breaking bar connected to a linear driver, a plurality of linear bushes longitudinally mounted on the breaking bar and each including an outer barrel, a plurality of buffer cylinders longitudinally mounted on the breaking bar, and a breaking tip extending in one direction and having a bar shape with a predetermined width. Each of the buffer cylinders includes a hollow cylinder body generating pressure therein, a piston received in the cylinder body, and a piston rod connected to the piston. The breaking tip is disposed in a longitudinal direction of the breaking bar beneath the breaking bar and connected to the piston rods and the shafts to be brought into contact with a glass substrate.