Open Can Leak Testing with Dual-Opening Sealing Mechanism
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Solution Overview
Problem
Existing leak testing methods for multi-part aerosol cans with openings in both the base and lid are inefficient and not economically feasible for 100% testing, as they require manual operation.
Innovation Solution
A testing device comprising a guide sleeve, spacer sleeve, and spreading device with a pull rod, allowing simultaneous sealing of both the lid and base openings for pressurization and leak detection, integrated into an automated testing station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual leak testing is used for multi-part aerosol cans with openings in both base and lid, then testing can be performed, but productivity is low and 100% testing is not economically feasible
Solution Approach 1:
The testing device is segmented into multiple functional components: a guide sleeve for positioning, a spreading device with clamping element for sealing the base opening, and a lid sealing mechanism. This segmentation allows each component to perform its specific function independently, enabling automated testing of multi-part cans with openings in both base and lid while maintaining high productivity
Solution Approach 2:
The patent introduces an intermediary spreading device with a clamping element that can be inserted through the lid opening to seal the base opening. This intermediary mechanism enables the testing device to access and seal the base opening from the outside, making automated leak testing of multi-part cans economically feasible by achieving 100% testing capability
2Adaptability or versatility
If a spreading device is inserted through the lid opening to seal the base opening, then both openings can be sealed for pressurization, but the device complexity increases
Solution Approach 1:
The spreading device is designed with multi-functionality: it can seal both the base opening and work in conjunction with the lid sealing mechanism. The clamping element on the spreading device provides universal sealing capability for different can configurations, making the testing device adaptable to multi-part aerosol cans while managing complexity through integrated design
Solution Approach 2:
The guide sleeve is positioned within the spreading device structure, creating a nested arrangement where the guide sleeve guides the spreading device through the lid opening. This nesting reduces overall device complexity by combining multiple functions within a compact structure, allowing automated testing of cans with openings in both base and lid
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
Enables automated, high-cycle rate leak testing of multi-part aerosol cans with openings in both the base and lid, ensuring reliable detection within seconds.
Implementation Method 1
the spreading device comprises an annular clamping element which can be moved from an annular rest position into an expanded working position
Implementation Method 2
the guide sleeve can be positioned in the opening of the lid
Implementation Method 3
the interior of a can with two openings can be pressurized with a pressure medium to test for leaks
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
The invention relates to a testing device and a method, as well as a testing station, for leak testing open, unfilled cans, in particular aerosol cans, which are multi-part and comprise a container wall (14) with a bottom (16) and a lid (15) arranged thereon, wherein the bottom (16) and the lid (15) each have an opening (17). (See Figure 1)