Tapered Metal Container Sidewall for Anti-Blocking Stacking
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Solution Overview
Problem
Tapered metal containers experience a blocking phenomenon during transportation in a stacked state due to vibration or impact, and the conventional manufacturing method is complex, making it difficult to create a shape that allows easy separation and supports easy printing on a sufficient surface area.
Innovation Solution
A metal container design with a sidewall portion featuring a bulging portion and a continuous tapered surface formed through multiple stages of diameter reduction drawing, ensuring a smooth surface for printing and preventing blocking during transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If multiple diameter reduction drawing processes are performed to form a tapered sidewall portion, then the surface area for printing is increased, but the manufacturing process complexity increases
Solution Approach 1:
The manufacturing process is divided into multiple drawing stages with each stage performing a specific function: first drawing forms the basic cup shape, second drawing creates the tapered sidewall, and intermediate annealing restores material properties. This segmentation allows control over surface area while managing process complexity through standardized stages.
Solution Approach 2:
Annealing is performed as a preliminary action between drawing stages to restore the metal material's ductility before subsequent forming operations. This preliminary treatment ensures the material can withstand multiple drawing processes while maintaining surface quality for printing.
2Ease of operation
If the container is designed with a tapered shape for easy separation during transportation, then separation ease is improved, but the surface area available for printing is reduced
Solution Approach 1:
The container design applies different geometric characteristics to different regions: the upper portion maintains a larger diameter and more vertical profile to provide printing surface area, while the lower portion tapers to facilitate easy separation during transportation. This local differentiation resolves the contradiction by optimizing each region for its specific function.
Solution Approach 2:
The design transitions from a uniform cylindrical shape to a tapered three-dimensional form, utilizing the vertical dimension to create a gradual diameter reduction. This dimensional change allows the container to maintain sufficient lateral surface area for printing while achieving the tapered profile needed for easy separation.
3Quantity of substance
If the sidewall portion is formed with a tapered profile through conventional methods, then the container can be stacked for transportation, but blocking phenomenon occurs during transportation
Solution Approach 1:
The container design introduces asymmetry in the wall thickness distribution and diameter profile along the vertical axis. The tapered profile creates an asymmetric geometry where the upper container in a stack has a larger opening that prevents it from being inserted into the lower container, thereby preventing the blocking phenomenon while maintaining stacking capability.
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
The design effectively prevents blocking during transportation while allowing easy separation and enables easy printing on a sufficient surface area, improving manufacturing efficiency and reducing complexity.
Implementation Method 1
formed by drawing a plate-like metal material
Implementation Method 2
performing diameter reduction drawing on the bottom portion side with respect to the opening portion
Data Source
AI summary
Provided are a metal container and a method for manufacturing same. The metal container includes an opening portion, a sidewall portion, and a bottom portion and has a lower end outer diameter smaller than an upper end inner diameter. The metal container has a shape of a bottomed cup formed by drawing a plate-like metal material and subjected to trimming, the sidewall portion has a tapered profile formed by performing diameter reduction drawing on the bottom portion side with respect to the opening portion of the bottomed cup, and the sidewall portion is formed with a bulging portion bulging in a circumferential direction and a continuous tapered surface where tapered surfaces are formed in a continuous manner by performing diameter reduction drawing a plurality of times on a lower side with respect to the bulging portion.