Welding Wire Container Lid Strap Extraction
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Solution Overview
Problem
Conventional containers for welding wire coils with straps emerging through peripheral orifices are prone to deformation, tearing, and accidental opening, leading to material damage, injury risks, and increased chances of the drum falling during lifting operations.
Innovation Solution
A container design with a lifting strap extending inside the internal volume and exiting through passage holes in the lid, featuring oblong-shaped orifices to prevent deformation and a double bottom structure to minimize strain, allowing safe lifting without risking the container's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If straps emerge through orifices in the peripheral wall of the container, then lifting and transporting of the container is facilitated, but the peripheral wall is subjected to shearing and deformation forces that can cause tearing and container failure
Solution Approach 1:
The lifting straps are extracted from the peripheral wall and relocated to the lid. The straps now emerge through orifices in the lid rather than through the peripheral wall, separating the lifting function from the load-bearing wall structure. This eliminates the shearing and deformation forces on the peripheral wall while maintaining lifting capability.
Solution Approach 2:
The location of the orifices is changed from the vertical peripheral wall to the horizontal lid surface. This dimensional relocation moves the stress concentration points from the wall to the lid, which is structurally better positioned to handle the lifting forces without compromising the peripheral wall integrity.
2Force
If the container is compressed during lifting, then the shaft becomes oval-shaped, but this causes untimely opening of the lid and deformation of the cylindrical body
Solution Approach 1:
The lifting function is extracted from the peripheral wall system and relocated to the lid-strap assembly. This separation allows the lid to be specifically designed with reinforced orifices and appropriate thickness to handle the lifting forces, while the cylindrical body maintains its structural integrity and circular cross-section during lifting operations.
3Ease of operation
If straps pass through the peripheral wall, then lifting is enabled, but the risk of accidental cutting of straps by workers using knives or cutters increases
Solution Approach 1:
The straps are extracted from the peripheral wall location and relocated to the lid. This spatial separation removes the straps from the work area where workers cut the protective plastic film, eliminating the hazard of accidental cutting while preserving the lifting function through the lid orifices.
4Force
If the peripheral wall is subjected to shearing forces from the straps, then lifting is achieved, but the risk of drum falling and wire exposure increases
Solution Approach 1:
The lifting function is extracted from the peripheral wall and assigned to the lid-strap assembly. This separates the lifting force transmission path from the peripheral wall, preventing shearing forces that could cause wall failure, drum falling, and wire exposure. The lid is specifically designed to handle these forces with appropriate reinforcement around the orifices.
Solution Approach 2:
The lid is designed with reinforced orifices and appropriate thickness to preemptively withstand the shearing and deformation forces that would otherwise be imposed on the peripheral wall. This prior reinforcement prevents container failure before it can occur during lifting operations.
Data Source
Figure 1~2
Figure 3~5
AI summary
The invention relates to a container (10) for a spool (4) of welding wire, comprising a container body (9) with an external peripheral wall (7) delimiting an internal volume (8), and having a first bottom (6) at its base (9b), and a lid (2) at its upper end (9a). At least one lifting strap (1) extends predominantly within the internal volume (8) of the container body (9), which includes end portions (1a, 1b) located outside the container (10). These end portions (1a, 1b) of the strap (1) exit the container (10) through openings (11) provided in the lid (2) which close the upper end (9a) of the container body (9).