Can Lid Thickness Layout for Pressure Buckling Resistance
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Solution Overview
Problem
Metal can lids experience buckling due to increased pressure, particularly with carbonated drinks, as existing designs focus on shape modifications rather than plate thickness optimization, leading to reduced strength and material inefficiency.
Innovation Solution
A can lid design where the plate thickness of the panel wall part and chuck wall radius part is increased relative to the center panel part, with t2 > t1, and t3 > t1, enhancing pressure resistance while allowing for reduced overall plate thickness, and the chuck wall part's middle part is made thinner to balance weight and pressure resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the plate thickness is reduced to save material resources and reduce weight, then material efficiency and weight reduction are improved, but pressure resistance deteriorates
Solution Approach 1:
The patent applies local quality by creating different plate thicknesses in different regions of the can lid. Specifically, the panel wall part (with thickness t2) and chuck wall radius part (with thickness t3) are made thicker than the center panel part (with thickness t1). This localized thickness variation provides enhanced pressure resistance at critical areas while maintaining overall material efficiency and weight reduction.
2Weight of moving object
If the plate thickness is reduced to save material resources and reduce weight, then weight reduction is improved, but pressure resistance deteriorates
Solution Approach 1:
The patent implements local quality by strategically thickening only the critical load-bearing regions (panel wall part with thickness t2 and chuck wall radius part with thickness t3) while keeping the center panel part (thickness t1) thinner. This approach achieves weight reduction overall while maintaining adequate pressure resistance where it is most needed.
3Strength
If shape design modifications are made to increase pressure resistance, then pressure resistance is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the plate thickness parameter in specific regions rather than changing the overall shape design. By adjusting thickness values (t1, t2, t3) in the center panel part, panel wall part, and chuck wall radius part respectively, the patent achieves enhanced pressure resistance without increasing structural complexity or requiring additional shape design modifications.
Data Source
AI summary
By conducting a strict study on a plate thickness, a pressure resistance is improved while satisfying the demand for further reduction of the plate thickness.A can lid has a center panel part, a panel wall part, a chuck wall radius part, a chuck wall part, and a curl part. t2>t1 holds, where t1 represents a plate thickness of the center panel part, and t2 represents a plate thickness of a bottom end of the panel wall part.