Gauging Jig for Roller Alignment in LCD Film Attaching Devices
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Solution Overview
Problem
In the manufacturing of Liquid Crystal Displays (LCDs), it is challenging for operators to ensure that the projections of the first and second rollers on the film attaching device's platform coincide, leading to potential linear bubbles and spots (Mura) on the display panel, as the lower roller is not observable.
Innovation Solution
A gauging jig with a pointer instrument is introduced, allowing operators to determine if the projections of the first and second rollers coincide by observing the positional relation between the pointer's end and the central axis of the second roller, even when the first roller is not visible, using a perpendicular pointer instrument connected to both rollers and a pivot mechanism for accurate alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the operator cannot observe the lower first roller, then the device structure remains simple, but the alignment precision between the first roller and second roller deteriorates
Solution Approach 1:
A gauging jig is introduced as an intermediary measurement tool between the operator and the rollers. The jig includes a vertical reference line that spans from the first roller to the second roller, allowing indirect observation and alignment verification without requiring direct visibility of the lower roller.
Solution Approach 2:
The measurement approach transitions from horizontal direct observation to vertical reference line projection. By establishing a vertical reference dimension perpendicular to the platform surface, the system enables alignment verification in a different spatial dimension that overcomes the visibility limitation.
2Device complexity
If the operator cannot observe the first roller, then the device structure remains simple, but the adjustment time and trial production increase
Solution Approach 1:
The gauging jig is prepared in advance with pre-established vertical reference lines and measurement markers. This preliminary preparation enables rapid alignment verification without requiring time-consuming trial adjustments, as the reference framework is already in place before the alignment process begins.
Solution Approach 2:
The gauging jig provides immediate visual feedback through the vertical reference line's relationship with the roller projections. When the reference line aligns with both roller projections, it provides clear positive feedback that correct alignment has been achieved, eliminating the need for repeated trial adjustments.
Data Source
AI summary
The present invention provides a gauging jig, for gauging whether projections of first and second rollers, which are disposed in parallel on both sides of a carrying surface of a platform, coincide on the surface. The gauging jig includes a pointer instrument which is provided on a side of the platform and perpendicular to the carrying surface. The pointer instrument has a first end and a second end. The first end is connected to the first roller and intersects with a central axis of the first roller, while the second end extends close to the second roller. With the gauging jig, an operator can promptly and accurately gauge whether the projections of the first and second rollers coincide on the carrying surface. Therefore, gauging time can be saved while times of trial production can be reduced or even omitted, thereby improving the production efficiency and reducing cost.