Glass Substrate Positioning Foot with Elastic Sensor
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Solution Overview
Problem
The existing mechanical correction techniques for glass substrates of different sizes are complicated, require manual switching of displacement recipes, and are prone to errors, which can lead to cracking and reduced product yield due to low automation and fragile substrate handling.
Innovation Solution
A positioning foot with an elastic member and sensor system that automatically adjusts to different substrate sizes, using a contact member and shutter to trigger sensors when a predetermined position is reached, allowing for precise position correction without manual recipe switching, thereby reducing the risk of cracking and improving automation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual switching of displacement recipes is used for glass substrates of different sizes, then position correction can be achieved, but the process becomes complicated and error-prone
Solution Approach 1:
The positioning foot automatically detects substrate size and adjusts its displacement recipe through self-service mechanisms. The sensor system detects substrate edges and automatically calculates appropriate displacement parameters, eliminating the need for manual recipe switching while maintaining adaptability across different substrate sizes
Solution Approach 2:
The system dynamically changes displacement parameters based on detected substrate characteristics. By measuring substrate position and dimensions in real-time, the system automatically adjusts displacement recipes to match different substrate sizes, replacing manual parameter switching with automated parameter adaptation
2Ease of operation
If manual operation is used to control positioning foot movement, then flexibility is maintained, but operator errors can cause substrate cracking
Solution Approach 1:
The patent replaces manual mechanical control with an automated sensor-based positioning system. Optical sensors and control algorithms substitute human operators, eliminating operational errors while maintaining precise control flexibility through programmable parameters and real-time adjustments
Solution Approach 2:
The system implements continuous feedback loops where sensors monitor substrate position and positioning foot movement in real-time. This feedback mechanism allows automatic correction of positioning errors and prevents excessive force application that could cause cracking, replacing manual monitoring with automated safety controls
3Productivity
If automated position correction is implemented, then productivity increases, but the system becomes more complex
Solution Approach 1:
The automated positioning system is divided into modular functional segments: sensor modules for detection, control modules for processing, and actuation modules for positioning foot movement. This segmentation allows independent optimization of each component and simplifies system integration while maintaining high automation capability
Solution Approach 2:
The positioning foot incorporates multiple functions within a single integrated device: detection, measurement, positioning, and correction. This multi-functionality reduces the number of separate components needed, simplifying the overall system while achieving comprehensive automated position correction
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 simplifies the position correction process, reduces manual errors, and minimizes the risk of substrate cracking, enhancing product yield by enabling precise and automated correction of glass substrates of varying sizes without mechanical rigid contact.
Implementation Method 1
an elastic member, a first end of which is connected with the contact member and receives a counterforce from the glass substrate delivered by the contact member so as to compress the elastic member
Implementation Method 2
the elastic member comprises a spring capable of being restored to its initial length after the compression action
Implementation Method 3
the sensor is a photoelectric sensor, and the positioning foot is further provided with a shutter to be displaced in synchronization with the contact member, the shutter being configured to trigger the sensor to be in an 'ON' state
Data Source
AI summary
The present disclosure provides a positioning foot, a positioning device and a method for correcting position of a glass substrate, and belongs to the technical field of automatic positioning. The positioning foot of the present disclosure comprises: a contact member for contacting a side of the glass substrate; an elastic member, a first end of which is connected with the contact member and receives a counterforce from the glass substrate delivered by the contact member so as to compress the elastic member, and a second end of which is fixed; and a sensor fixed on the second end of the elastic member. Wherein, the contact member is arranged to be displaced with a compression action of the elastic member, and after the contact member is displaced to a predetermined position, the sensor is triggered to be in an “ON” state such that the elastic member stops the compression action.