Suction Holding Unit Contact Detection for Ingot Peeling Control
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Solution Overview
Problem
In peeling apparatuses, it is difficult to determine the precise downward movement of a holding unit due to varying ingot thicknesses, leading to potential damage from human error and operational intricacy in measuring ingot thickness before peeling.
Innovation Solution
A conveying apparatus with a detection unit that senses contact with the workpiece, stopping downward movement when contact is made, using a non-contact distance sensor or contact sensor to detect variations in distance or resistance/capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual measurement of ingot thickness is performed before peeling, then the peeling process can be controlled, but the operation becomes intricate and human errors may occur
Solution Approach 1:
The holding unit automatically detects contact with the workpiece through its own movement detection mechanism, eliminating the need for separate manual thickness measurement operations. The system serves itself by using the holding unit's downward movement as the detection trigger.
Solution Approach 2:
The patent replaces manual measurement operations with an automated detection system that uses the holding unit's mechanical movement and integrated sensors to automatically determine when contact is made, substituting human-operated measuring equipment with an automated control system.
2Reliability
If manual measurement and input of ingot thickness is required, then peeling control is possible, but the risk of human error and apparatus damage increases
Solution Approach 1:
The holding unit autonomously detects workpiece contact through its own downward movement, eliminating human intervention in the measurement and control process, thereby removing the source of human error while maintaining accurate peeling control.
Solution Approach 2:
The detection unit provides real-time feedback on the holding unit's contact with the workpiece, creating a closed-loop control system that automatically adjusts based on actual contact conditions, eliminating reliance on manual input and reducing error risk.
3Extent of automation
If the holding unit downward movement is not automatically detected, then the apparatus structure remains simple, but the automation level is low and manual intervention is required
Solution Approach 1:
The holding unit itself serves as the detection trigger by detecting its own downward movement and contact with the workpiece, eliminating the need for separate complex detection mechanisms while achieving automatic detection functionality.
Solution Approach 2:
The holding unit performs multiple functions: it holds the workpiece under suction, moves downward to contact the workpiece, and simultaneously serves as the detection trigger through its movement detection, consolidating multiple functions into a single component to minimize added 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
Automatically detects the moving amount of the holding unit, reducing the need for manual thickness measurement, minimizing human error, and preventing apparatus or workpiece damage.
Implementation Method 1
a detection unit that detects that the holding unit has moved downward and made contact with the plate-shaped workpiece
Implementation Method 2
a holding unit that holds the plate-shaped workpiece under suction
Implementation Method 3
a laser beam of such a wavelength as to be transmitted through the ingot to form a peeling layer inside the ingot
Data Source
AI summary
A conveying apparatus for conveying a plate-shaped workpiece includes a holding unit that holds the plate-shaped workpiece under suction, a moving unit that moves in a vertical direction together with the holding unit, a detection unit that detects that the holding unit has moved downward and made contact with the plate-shaped workpiece, and a control unit that performs control to stop a downward movement of the moving unit when the detection unit detects that the holding unit has made contact with the plate-shaped workpiece.