Sealing Detection via Inverted Pressure and Thin Film
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional sealing detection methods often miss products with poor sealing issues due to reduced gap sizes caused by down-press pressure, leading to low detection success rates and accuracy.
Innovation Solution
A sealing detection method involving a thin film on the gasket, a sealing ring with a vent hole connected to a gas source and pressure sensor, and maintaining air pressure to detect gas flow within a qualified threshold, preventing gap narrowing and improving detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If down-press method is used to seal the hole during detection, then the gap between component and base is reduced improving sealability, but products with poor sealing are missed due to gap narrowing
Solution Approach 1:
Instead of applying pressure from above to seal the opening (conventional method), the patent applies pressure from below the base through the sealing ring and mounting through hole. This inverted approach prevents the gasket and skirt portion from being pressed against the base, avoiding gap narrowing while still enabling effective sealing detection through the adhesive layers.
2Reliability
If down-press pressure is applied to improve sealing, then gap between gasket and mounting through hole is reduced, but detection success rate decreases due to missed detection
Solution Approach 1:
The patent inverts the sealing detection approach by applying pressure from below rather than pressing down from above. This prevents the gasket and skirt portion from being compressed against the base, maintaining gap dimensions and enabling accurate detection of poor sealing products, thereby improving detection success rate.
3Measurement precision
If thin film is attached on gasket to seal opening, then gap narrowing is prevented improving detection accuracy, but detection process becomes more complex
Solution Approach 1:
The patent uses a thin film attached to the gasket's opening to seal it during detection. This thin film approach prevents gap narrowing between the gasket and mounting through hole, as well as between the skirt portion and base, thereby maintaining detection accuracy without requiring complex structural modifications.
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
This method enhances detection accuracy and success rate by maintaining gap sizes and accurately identifying products with poor sealing issues, avoiding missed detections.
Implementation Method 1
starting to supply or pump gas by the gas source into the sealing ring through the vent hole to form a positive pressure or a negative pressure region between the sealing ring and the base
Data Source
AI summary
There is provided a sealing detection method for a sealing structure, comprising the following steps: S1, attaching a thin film on a gasket to seal an opening; S2, disposing a sealing ring directly below the base to seal a lower opening of the mounting through hole; S3, providing a vent hole on sealing ring through which the sealing ring communicates with a gas source with a gas pressure sensor; S4, starting to supply or pump gas to form a positive pressure or a negative pressure region between the sealing ring and the base; S5, maintaining the air pressure state for a certain time, during which the gas pressure sensor performs real-time detection of gas flow; S6, comparing detected gas flow with qualified threshold range; S7, sorting products with the sealing structure according to detection results; S8, peeling off the thin film and completing the detection.