Self-Adjusting Clamp Mechanism for Media Transport Reliability
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Solution Overview
Problem
Conventional check transport mechanisms in Self-Service Terminals (SSTs) face issues with applying a suitable compression force, which can lead to failures during certain operations, especially when separating media items from a bunch, affecting bunch feeding, picking, and separation processes.
Innovation Solution
A self-adjusting clamping mechanism that applies a predetermined clamp force to media items by selectively moving a clamp surface towards or away from a support surface, with the angle of the clamp surface remaining constant, and automatically adjusting based on the thickness of the media items to maintain consistent force during different operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compression force is applied to a bunch of media items during transport, then the media items are transported together along the transport path, but the compression force is not suitable for all modes of operation such as when separating media items from a bunch
Solution Approach 1:
The clamp force is made dynamically adjustable based on the operational mode. The system transitions from a static compression force to a dynamic clamp force that adapts to different operations (transport vs. separation). This is achieved through a controllable clamping mechanism that can modify the magnitude of the clamp force according to the current operational requirements, resolving the contradiction between maintaining reliable transport and enabling flexible separation operations.
2Manufacturing precision
If a predetermined clamp force is applied to maintain consistent force during different operations, then accurate and repeatable clamping is achieved, but the mechanism must automatically adjust based on media item thickness
Solution Approach 1:
The clamping mechanism incorporates a self-adjusting feature that automatically adapts to different media item thicknesses without requiring complex external control systems. The mechanism uses the physical characteristics of the media items themselves (their thickness) to trigger automatic adjustment of the clamp force, enabling precise and repeatable clamping while minimizing the complexity of the control system.
3Force
If the clamp surface is moved towards or away from the support surface to apply clamp force, then the desired clamping force is achieved, but the angle of the clamp surface must remain substantially constant
Solution Approach 1:
The mechanism decouples the degree of freedom for force application from the orientation constraint by introducing a rotational dimension. The clamp surface is configured to rotate about an axis that is substantially perpendicular to the direction of movement between the clamp and support surfaces. This allows the clamp force to be adjusted through movement in one dimension while maintaining the required angular orientation through rotation in another dimension.
Data Source
AI summary
The present invention provides apparatus and a method for transporting at least one media item along a transport path, comprising locating a bunch of media items between at least one support surface and at least one clamp surface, and selectively moving said clamp surface towards or away from said support surface to apply a predetermined clamp force to the bunch of media items, wherein a predetermined angle of said clamp surface relative to said support surface is substantially constant when said clamp surface is moved towards or away from said support surface.