Peeling Bar Curved Tip for Polarizing Film Fracture Prevention
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Solution Overview
Problem
The peeling of polarizing films from panels often results in fractures due to irregular tension and stress concentration, leading to increased manual labor and unclean surroundings.
Innovation Solution
A peeling bar and apparatus with a curved tip and inclined surface, along with a controller to manage tension, are used to minimize friction and apply uniform tension, preventing stress concentration and fractures during the peeling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a conventional peeling apparatus is used to peel the polarizing film from the panel, then the peeling process can be automated, but irregular tension is applied to the polarizing film causing fracture
Solution Approach 1:
The peeling bar features a curved surface at its tip that contacts the polarizing film during peeling. This curved geometry distributes the applied force over a larger area and prevents stress concentration at single points, thereby reducing film fracture while maintaining automated peeling operation
Solution Approach 2:
The peeling bar's upper surface is inclined at a specific angle (20-40 degrees) relative to the panel surface, and the curved tip has a controlled radius (4-30 mm). These parameter optimizations ensure uniform tension distribution across the polarizing film during automated peeling, preventing fracture while maintaining process automation
2Productivity
If the polarizing film is peeled using conventional methods, then the peeling process can be completed, but stress concentration occurs leading to film fracture and increased manual labor
Solution Approach 1:
The curved tip of the peeling bar enables smooth, uniform separation of the polarizing film from the panel without creating stress concentration points. This design achieves complete automated peeling without film fracture, eliminating the need for subsequent manual repair work and maintaining high productivity
3Force
If conventional peeling is performed, then the polarizing film can be removed, but frictional force causes film fracture and adhesive contamination
Solution Approach 1:
The curved surface at the tip of the peeling bar reduces the coefficient of friction between the peeling tool and the polarizing film. The curved geometry allows the film to glide smoothly over the surface, minimizing frictional forces that would otherwise cause film fracture and adhesive contamination
Solution Approach 2:
The inclined angle of the upper surface (20-40 degrees) and the radius of the curved tip (4-30 mm) are optimized to minimize frictional contact while maintaining effective peeling force application. These parameter changes reduce harmful frictional effects during the peeling process
Data Source
AI summary
The present invention relates to a peeling bar, apparatus, and method for peeling a polarizing film from a panel. This invention can minimize friction between the peeling bar and the polarizing film since the peeled polarizing film is in contact with a front part of the peeling bar. The radius of a curved surface at the tip of the front part and an inclined upper surface of the front part are designed to minimize the Z-axis component of a shearing force applied to the polarizing film. Also, in order to equalize tension applied to the polarizing film in a peeling process, this invention makes both ends of the polarizing film closely adhere to the peeling bar. According to this invention, fracture of the polarizing film is prevented, and thereby the polarizing film can be stably peeled from the panel without fracture.