Pushing Block Corrects Glass Substrate Alignment
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Solution Overview
Problem
Conventional substrate transporting systems experience misalignment and abnormality due to inconsistent tightness and synchronization of transporting belts, leading to crooked glass substrates during manufacturing.
Innovation Solution
A substrate transporting device with a drive shaft, transporting belts, a rail, and a pushing block that moves along the transporting direction to correct the orientation of glass substrates, ensuring they remain straight by using a cylinder, first and second bumps to exert force parallel and perpendicular to the substrate plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transporting belts are used to transport glass substrates, then the transportation capacity is improved, but the synchronization accuracy deteriorates due to different tightness and drive shaft conditions
Solution Approach 1:
A pushing block is introduced as an intermediary device between the transporting belts and the glass substrate. The pushing block contacts the substrate and pushes it to correct any deviation from the transporting direction, thereby mediating the effect of belt synchronization errors and ensuring accurate substrate alignment without requiring perfect belt synchronization.
Solution Approach 2:
The pushing block mechanism provides real-time feedback correction during transportation. When the substrate deviates due to belt synchronization issues, the pushing block detects and corrects the deviation by applying force to realign the substrate with the transporting direction, creating a feedback loop that maintains precision despite belt imperfections.
2Productivity
If transporting belts operate at high speed, then the processing efficiency is improved, but the risk of substrate crooking increases due to synchronization errors
Solution Approach 1:
The pushing block serves as a mediator that decouples the high-speed transportation function from the alignment function. It allows the system to operate at high speeds while maintaining reliability by physically correcting substrate alignment during transport, preventing crooking even when belt synchronization is imperfect.
Solution Approach 2:
The pushing block performs preliminary alignment correction during the transportation process itself. By continuously pushing the substrate to maintain proper orientation throughout the high-speed transport, it prevents crooking before it can cause machine disorders or processing defects.
3Device complexity
If pushing block structure is simplified, then the device complexity is reduced, but the correction capability may deteriorate
Solution Approach 1:
The pushing block is segmented into functional components: a cylinder for actuation, a piston rod for force transmission, and bumps for contact and pushing. This segmentation allows each component to be optimized independently - the bumps provide simple geometric contact points for correction while the cylinder-piston mechanism provides controlled force, achieving effective correction without complex overall structure.
Data Source
AI summary
The present disclosure proposes a substrate transporting device having a drive motor configured to drive the drive shaft, transporting belts driven by the drive shaft and configured to transport glass substrates at an operating speed when the drive shaft is driven by the drive motor, a rail arranged between the transporting belts, and a pushing block arranged on the rail and moving along a transporting direction of the glass substrates at a moving speed in accordance with the operating speed of the transporting belts, for pushing the glass substrate to shift horizontally along the transporting direction of the glass substrate to prevent the glass substrate from being crooked. In this way, the orientation of the glass substrate is corrected, and the accuracy of the transportation of the glass substrate is ensured. The occurrence of machine disorder due to a crooked glass panel is reduced as well.