LCD Substrate Transport Fork Vibration Control
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Solution Overview
Problem
The vibration of robot hands used to transport liquid crystal display substrates is difficult to measure and monitor, leading to potential damage and significant losses due to substrate breakage during manufacturing.
Innovation Solution
A transporting device equipped with laser emitting devices, CCD laser displacement sensors, a processor, air damping devices, and an alarming system to measure and alleviate fork vibration, ensuring the substrate is not damaged during transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a robot hand with forks is used to transport the substrate, then the substrate can be moved between different manufacturing devices, but the forks vibrate during transport causing the substrate to be damaged or shattered
Solution Approach 1:
The patent applies beforehand cushioning by installing damping structures on the forks before substrate transport. These damping structures include vibration dampers and cushioning materials that are pre-installed to reduce vibrations and shocks during transport, preventing substrate damage before it occurs rather than reacting after damage happens.
Solution Approach 2:
The patent implements feedback by using vibration sensors to detect fork vibrations in real-time during substrate transport. The sensor data is fed back to a control system that adjusts damping parameters or alerts operators when vibrations exceed safe thresholds, creating a closed-loop system that continuously monitors and responds to vibration conditions.
2Productivity
If the vibration of the forks is not monitored, then the transporting device can operate continuously without interruption, but a great deal of time, manpower, material and money is consumed when substrates are broken and operators need to adjust the device
Solution Approach 1:
The patent applies preliminary action by implementing real-time vibration monitoring and early warning systems that detect abnormal vibrations before they cause substrate damage. The system performs preliminary assessments of vibration levels and alerts operators in advance, allowing them to take preventive actions before substrates are damaged and before costly downtime occurs.
Solution Approach 2:
The patent implements feedback through continuous vibration monitoring that provides real-time information to operators. When vibrations exceed predetermined thresholds, the system sends alerts or warnings to operators, enabling them to respond promptly and prevent substrate damage, thereby reducing downtime and operational losses.
3Measurement precision
If traditional vibration measurement methods are used, then the vibration can be measured after damage occurs, but the vibration is hard to be measured and monitored real-timely
Solution Approach 1:
The patent applies mechanics substitution by replacing complex mechanical vibration measurement systems with electronic vibration sensors and digital monitoring systems. These electronic sensors can be easily integrated into the fork structure and provide real-time digital signals that are straightforward to process and analyze, significantly reducing the difficulty of real-time vibration measurement and monitoring.
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 device effectively monitors and alleviates fork vibration, reducing substrate damage and enabling continuous operation by alerting operators to abnormal conditions, thus minimizing downtime and resource wastage.
Implementation Method 1
laser emitting devices which are respectively mounted on the forks that carries two ends of the substrate, laser sensors which are mounted on the fixing arm and corresponding to the laser emitting devices
Implementation Method 2
the laser sensor will receive the laser emitted from the laser emitting device, sense the displacement of the fork via the laser
Data Source
AI summary
A transporting device for transporting substrate of liquid crystal display and using method thereof are provided. The transporting device comprises a fixing arm, at least two forks mounted on the fixing arm, laser emitting devices respectively mounted on the forks that are used to carry two ends of the substrate, laser sensors mounted on the fixing arm and corresponding to the laser emitting devices, a processor mounted on the fixing arm and connected to the laser sensors, and air damping devices mounted below the forks that are used to carry two ends of the substrate. The droop amount and the vibration of the fork can be measured when the transporting device is carrying a substrate, and it can be determined whether the droop amount and the vibration are abnormal. If they are abnormal, the laser emitting device will be started up to alleviate the vibration of the fork.