Infrared Sensor Unit for Glass Substrate Shaft Synchronization
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Solution Overview
Problem
In the LCD panel production process, driven shafts in glass substrate transmission devices often lose synchronization due to factors like magnetic interference and temperature changes, leading to sliding friction, which can cause scratches and breakage of the glass substrate, making it difficult to detect and address the issue in real time.
Innovation Solution
A glass substrate transmission device equipped with parallel driven shafts, rollers, a reflection plate, and an infrared sensor unit that emits and receives infrared light to determine the synchronization of the driven shafts based on the intensity of the reflected light, with a determining module that matches the intensity values to detect synchronous or asynchronous rotation and triggers an alarm for asynchronous conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If adjustment method is used to ensure contact point height, then manufacturing precision is improved, but reliability deteriorates because driven shafts cannot guarantee synchronization under magnetic interference, temperature changes, and site impact
Solution Approach 1:
The patent replaces mechanical adjustment methods with an optical detection system. Infrared sensors and reflection plates are installed on driven shafts to optically detect rotational position and speed, eliminating reliance on mechanical precision alone. The system uses light reflection principles to continuously monitor shaft synchronization, providing real-time feedback that compensates for mechanical variations caused by temperature, magnetic fields, and physical impacts.
2Device complexity
If naked eye detection is used, then device complexity is minimized, but measurement precision deteriorates making it difficult to detect asynchronous rotation timely
Solution Approach 1:
The patent introduces infrared sensors and reflection plates as intermediary elements between the driven shafts and the detection system. These components act as mediators that convert mechanical rotational information into optical signals that can be precisely measured and processed electronically, enabling accurate detection of asynchronous rotation without requiring complex direct mechanical measurement systems.
3Device complexity
If no detection system is installed, then device complexity is reduced, but loss of time increases as issues are only discovered after product defects occur
Solution Approach 1:
The patent implements a real-time feedback detection system using infrared sensors that continuously monitor the rotational status of driven shafts. The system provides immediate feedback when asynchronous rotation is detected, allowing operators to correct issues before they cause product defects. This closed-loop feedback mechanism eliminates the time delay associated with discovering problems only after glass substrate damage occurs.
4Manufacturing precision
If driven shafts rotate asynchronously, then manufacturing precision deteriorates causing sliding friction and glass substrate damage, but adding detection systems increases device complexity
Solution Approach 1:
The patent replaces complex mechanical synchronization mechanisms with a simpler optical detection and control system. Instead of using complex mechanical linkages to ensure synchronized rotation, the system uses infrared sensors to detect rotational status and provides control signals to maintain synchronization, thereby preserving glass substrate flow precision while minimizing mechanical complexity.
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 solution allows for automatic and timely detection of rotational synchronization, preventing scratches and breakage of the glass substrate by identifying asynchronous rotation and alerting operators, thus ensuring smooth and continuous glass substrate flow.
Implementation Method 1
an infrared sensor unit disposed at the other side of the driven shafts along the first direction, and the through holes and the reflection plate are located at the propagation direction of the infrared of the infrared sensor unit, and the infrared sensor unit emits the infrared and receives a reflection light reflected back by an obstacles
Implementation Method 2
the infrared sensor unit emits the infrared and receives a reflection light reflected back by an obstacles and emitted by the infrared sensor unit
Data Source
AI summary
The present invention provides a glass substrate transmission device and a method for detecting the rotational synchronization of driven shafts. The device comprising: multiple driven shafts, the multiple driven shafts are disposed parallel at intervals along a first direction and each of the driven shafts has a through hole at the first direction; multiple rollers fixed at intervals on the driven shafts for carrying a glass substrate, and rotate with the driven shaft to flow the glass substrate; a reflection; an infrared sensor unit emitting the infrared and receives a reflection light reflected back by an obstacles and emitted by the infrared sensor unit, and determine the rotational synchronization of the driven shafts according to the value of the intensity of the reflected light. The through holes and the reflection plate are located at the propagation direction of the infrared of the infrared sensor unit. By above way, the present invention can timely detect that if the multiple driven shafts rotate synchronously or stop rotating to avoid the glass substrate from scratch or break.