Symmetric Cap Design for Hermetic Relief Valve Assembly
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Solution Overview
Problem
The assembly of relief valves for hermetic containers is hindered by operational uncertainties during high-speed production, particularly in inserting the small cap into the asymmetric valve body, requiring optical control devices for proper orientation, which limits efficiency and reliability.
Innovation Solution
A symmetric, circular cap with identical ribs on both faces is designed to ensure correct orientation and insertion without pre-orientation, allowing for reliable assembly even at high production speeds without optical control mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If optical control devices are used to pre-orient the cap, then the orientation precision is improved, but the device complexity and production cost increase
Solution Approach 1:
The patent applies asymmetry in reverse - it creates symmetry where asymmetry would normally be used for orientation. The cap is designed with identical ribs on both faces, making it symmetric, which eliminates the need for optical control devices to determine orientation. This symmetric design allows the cap to be correctly inserted without pre-orientation, resolving the contradiction by removing the need for complex optical systems while maintaining proper assembly orientation.
Solution Approach 2:
The symmetric cap design with identical ribs on both faces enables self-service orientation - the cap automatically orients itself correctly during insertion without requiring external optical control mechanisms. The symmetry ensures that regardless of which face is inserted first, the ribs will align correctly with the valve body, making the system self-correcting and eliminating complex control systems.
2Reliability
If optical control mechanisms are implemented for cap insertion, then the assembly reliability is improved, but the productivity decreases
Solution Approach 1:
By designing the cap with symmetric identical ribs on both faces, the patent eliminates the need for time-consuming optical scanning and orientation determination. The symmetric design ensures correct assembly regardless of insertion orientation, maintaining high reliability while enabling much faster production speeds without optical control overhead.
Solution Approach 2:
The symmetric design with identical ribs is prepared in advance during cap manufacturing, so that during assembly, no preliminary orientation actions are needed. The cap is ready for immediate insertion without requiring optical control systems to determine correct orientation, thus maintaining reliability while dramatically improving productivity.
3Ease of operation
If the cap is designed with asymmetric features for orientation, then the ease of operation is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent uses symmetry (the opposite of asymmetry) to simplify both manufacturing and operation. By making the cap symmetric with identical ribs on both faces, it becomes easier to manufacture since the same rib pattern is repeated, and easier to operate since no orientation determination is needed during assembly.
Data Source
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AI summary
A unidirectional relief valve of flat kind to be applied inside hermetic containers, characterized by the fact that the cap (2), which is of circular shape and has a central hole (3), has a symmetric structure, and on both faces are present identical ribs (5), allowing such identity and symmetry to insert the cap (2) inside the valve body (13) without the need to pre-orient it.