Spiral Container Welding Seam Overlap Design
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Solution Overview
Problem
Existing spiral-shaped container manufacturing methods struggle to achieve both increased mechanical rigidity and large storage volume while maintaining simplicity and quick production, especially for applications like storing plant-based oils, which require enhanced structural stability.
Innovation Solution
A container design featuring a spiral-shaped sheet strip with a first edge section folded inside or outside, a second edge section overlapping a third section, and a welding seam that extends into the overlap area, providing a break-proof mechanical connection and increased rigidity, with the welding seam height being significantly greater than the sheet thickness to ensure force transfer without stress peaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional spiral container manufacturing methods are used, then production is simple and quick, but mechanical rigidity and structural stability are insufficient for large-volume containers
Solution Approach 1:
The sheet strip is pre-formed with specific edge sections (first edge section folded to form fold-out edge, second edge section positioned to overlap third section) before assembly into the spiral container. This preliminary preparation of edge configurations enables the subsequent welding process to create enhanced structural connections that improve mechanical rigidity without complicating the overall manufacturing流程
Solution Approach 2:
The container structure combines the sheet strip material with weld seams to create a composite construction. The weld seams act as additional material that bonds the overlapping edge sections together, creating a hybrid structure that leverages both the flexibility of the sheet strip and the strength of the welded joints to achieve superior mechanical rigidity
2Strength
If welding seam height is increased to improve force transfer, then mechanical rigidity increases, but manufacturing complexity increases
Solution Approach 1:
The welding seam is designed with specific local characteristics: its height is at least equal to the sheet strip thickness, and it is positioned to extend into the overlap area between the second edge section and third section. This localized optimization of weld geometry ensures adequate force transfer capability without requiring complex welding procedures throughout the entire structure
3Stability of the object's composition
If overlap area is increased to improve mechanical connection, then structural stability improves, but manufacturing time increases
Solution Approach 1:
The second edge section overlaps the third section by at least one times the sheet strip thickness, which provides sufficient mechanical interlocking and structural stability. This partial overlap is adequate to achieve the desired connection strength without requiring excessive overlap that would significantly increase manufacturing time and complexity
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 achieves enhanced mechanical rigidity and large storage volume, ensuring the container's structural integrity and fluid-tightness, while simplifying the manufacturing process and preventing germ pockets, making it suitable for diverse applications including agricultural and forestry storage.
Implementation Method 1
The second edge section and the third section of the sheet strip are welded together in the vicinity of the overlap, where the welding seam extends at least partially into the area between the second edge section and the third section of the sheet strip
Data Source
AI summary
A container (10) is produced from a spiral-shaped, bent sheet strip (20) having a first edge section (22) extending in a spiral shape, being bent, and forming a bending edge (24) extending in a spiral shape toward the inside or the outside of the container (10). The sheet strip (20) has a second edge section (32) opposite the first edge section (22) in the longitudinal direction of the sheet strip (20) and extends in a spiral shape. The second edge section (32) overlaps a third section (28) opposite the first edge section (22) in relation to the bending edge (24) and is adjacent to the bending edge (24). The second edge section (32) and the third section (28) are welded to each other in the region of the overlap (30). The welding seam (40) extends at least partially into the region between the second edge section (32) and the third section (28) of the sheet strip (20).


