Elliptical Vacuum Suction Cup for Rectangular Container Handling
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Solution Overview
Problem
Inventory systems face inefficiencies in moving containers of varying shapes and sizes, leading to lower throughput, long response times, and increased backlogs due to the limitations of traditional manipulation devices.
Innovation Solution
A container manipulation system utilizing a vacuum suction cup with an elliptical cross-section and a skirt with a high-friction engagement surface, which can attach to non-square, rectangular areas of containers, generating suction to lift and move containers efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional manipulation devices are used, then device complexity is reduced, but productivity decreases due to inability to efficiently move containers of varying shapes and sizes
Solution Approach 1:
The suction cup geometry is changed from traditional circular to elliptical with specific aspect ratio parameters, allowing it to efficiently engage with rectangular container surfaces. This parameter change enables the same device structure to handle multiple container sizes and shapes, improving productivity without requiring multiple specialized tools
Solution Approach 2:
The manipulation device uses a universal elliptical suction cup design that can attach to various rectangular container configurations, making a single device capable of handling multiple container types. This multi-functionality eliminates the need for multiple specialized manipulation devices, maintaining device simplicity while improving throughput
2Adaptability or versatility
If traditional circular suction cups are used, then manufacturing is simpler, but adaptability decreases when handling non-square rectangular containers
Solution Approach 1:
The suction cup is designed with an elliptical cross-section that has asymmetric dimensions relative to square containers, with the major axis aligned to match the longer dimension of rectangular containers. This asymmetric geometry provides optimal contact area and suction distribution for non-square containers while remaining manufacturable using standard elliptical forming processes
3Force
If suction cup size is increased to handle heavier containers, then holding force improves, but the suction cup cannot attach to smaller attachment areas
Solution Approach 1:
The suction cup incorporates a compliant skirt that can dynamically adapt its contact area with the container surface. When engaging with larger containers, the skirt expands to provide maximum contact area for high holding force. When engaging with smaller containers, the skirt compresses to fit within smaller attachment areas, allowing the same device to optimize holding force across different container sizes
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 system effectively increases the holding force and allows for the efficient movement of containers weighing up to 100 pounds, improving throughput and reducing backlogs by accommodating containers with different dimensions.
Implementation Method 1
The pump can remove air from between the engagement surface and the container to generate the vacuum hold
Implementation Method 2
The engagement surface can include a friction material that increases the coefficient of friction between the engagement surface and the container
Data Source
AI summary
A suction cup can include a body and a skirt connected to a periphery of the body. The body can have an elliptical cross-section with a major axis that is longer than a minor axis. The body can include an aperture extending from a proximal side to a distal side. A stem can be positioned within the primary aperture. The stem can include an air conduit that can allow air to flow from the proximal side of the body.