Cap Attachment Device with Oblique Grip Claws
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Solution Overview
Problem
Existing cap attachment-detachment devices struggle with securely gripping and rotating caps due to the uneven strength distribution between the upper and lower portions of the cap, leading to deformation, slipping, or tilting, which hinders appropriate attachment and detachment.
Innovation Solution
A cap attachment-detachment device featuring an operation portion that moves in an up-and-down direction, equipped with opposing grip claws applying an obliquely upward force to the cap's side surface and a pressing member contacting the cap's upper surface, stabilizes the cap for secure attachment and detachment without deformation or tilting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the robot hand grips the lower portion of the cap, then the cap can be gripped, but the lower portion of the cap may be deformed into an oval shape
Solution Approach 1:
The grip claws are designed to apply force not only horizontally for gripping but also with an obliquely upward component. This multi-dimensional force application allows the claws to grip the cap's upper portion while preventing downward deformation, resolving the contradiction between gripping capability and shape preservation.
2Strength
If the robot hand grips the upper portion of the cap, then the cap strength is sufficient, but the cap may slip or tilt when being gripped
Solution Approach 1:
The grip claws are designed with asymmetric force application - the force is applied obliquely upward and inward at specific angles rather than symmetrically. This asymmetric design allows the claws to engage the cap's upper portion securely while the oblique upward component prevents slipping and tilting, improving gripping stability.
3Device complexity
If a conventional grip mechanism is used, then the device structure is simple, but the cap cannot be attached or detached appropriately due to deformation or tilting
Solution Approach 1:
The grip claws are designed with specific local geometric features and force application characteristics tailored to the cap's geometry. The oblique upward force application and inward component are locally optimized at the contact points to prevent deformation and tilting, ensuring reliable attachment and detachment without requiring complex overall device structure.
Data Source
AI summary
A cap attachment-detachment device includes an operation portion that moves in an up-and-down direction, and grips and rotates a cap so as to attach the cap to or attach the cap from a container. The operation portion includes a first grip claw, a second grip claw and the pressing member. The first grip claw and the second grip claw are provided to be opposite to each other and configured to be capable of applying an obliquely upward force inwardly to an upper portion of a side surface of the cap. The pressing member is configured to be capable of coming into contact with an upper surface of the cap.