Stackable Welding Electrode Container with Interlocking Contours
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Solution Overview
Problem
Current packaging for welding electrodes, which have a generally flat bottom, allows for movement between containers when stacked, leading to a disjointed display and potential damage from sliding or falling.
Innovation Solution
A stackable container design with complementary contours on its surfaces to restrain lateral movement while allowing longitudinal movement, ensuring containers align properly when stacked, using a moldable polymer material with recesses and protrusions to maintain stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If containers have a generally flat bottom for simple construction, then manufacturing is easier, but lateral movement occurs when stacked leading to unstable displays
Solution Approach 1:
The container applies local quality by providing a flat bottom surface for most of the base area to maintain manufacturing simplicity, while introducing localized protrusions at specific positions (corners or edges) that engage with corresponding recesses in stacked containers. This localized structural modification prevents lateral movement without requiring complex overall container redesign.
Solution Approach 2:
The stacking mechanism employs asymmetric geometry where protrusions on one container's bottom surface fit into recesses on the adjacent container's top surface. This asymmetric interlocking design creates directional stability that prevents lateral shifting while maintaining ease of manufacture through simple geometric features.
2Ease of operation
If containers allow free movement for easy handling, then consumer access is improved, but containers shift and fall from the stack damaging contents
Solution Approach 1:
The container design implements dynamic characteristics by allowing longitudinal movement (pulling containers apart along the stacking axis) while restraining lateral movement through protrusion-recess engagement. This differential movement capability enables easy consumer access by pulling containers horizontally from the stack while preventing damaging lateral shifts that could cause containers to fall.
Solution Approach 2:
The stacking system segments movement freedom by direction: longitudinal movement is permitted for easy handling and retrieval, while lateral movement is constrained for stability. The protrusion-recess mechanism creates directional independence in movement constraints, allowing easy access without compromising reliability.
3Strength
If containers are rigid for structural stability, then stack integrity is improved, but lateral movement restraint becomes more difficult
Solution Approach 1:
The container is pre-formed during manufacturing with integrated protrusions and recesses molded into the rigid container body. This preliminary incorporation of stacking features eliminates the need for separate restraining mechanisms, maintaining container rigidity while avoiding additional complexity in the stacking system.
Data Source
AI summary
A container for storing welding electrodes includes a container body and a container cap constructed via thermoplastic injection molding. The container is constructed with walls that define an interior region and complementary upper and lower surfaces. When multiple containers are stacked together, the upper surface of one container engages the lower surface of an adjacent container thereby restraining lateral movement between the containers. However, the configuration of the upper and lower surfaces allows for longitudinal movement between the containers.