Banknote Handler Misfeed Superposition and Segmentation
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Solution Overview
Problem
Banknote dispensing systems, particularly those using stack stores, often suffer from issues like misdispensing multiple banknotes due to friction and soiling, leading to potential overpayment or jamming, and existing mechanisms to prevent this are not always effective.
Innovation Solution
A banknote handler system that includes a recycler for authenticating and denominating banknotes, a payout for secure storage and dispensing, and a cashbox for misfed notes, with mechanisms to superpose overlapping banknotes and determine misdispensed banknotes, ensuring only single banknotes are dispensed and stored appropriately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If banknotes are stored in a stack store, then the storage is compact, but more than a single banknote may be dispensed due to friction and soiling
Solution Approach 1:
The patent divides the stack store into multiple compartments or sections, each capable of holding a limited number of banknotes. This segmentation prevents excessive stacking that leads to friction and soiling issues, while maintaining compact storage. Each compartment can be independently managed to ensure reliable single banknote dispensing.
Solution Approach 2:
The patent introduces an intermediary mechanism (such as a separator or guide element) between banknotes in the stack store. This intermediary prevents direct contact and friction between adjacent banknotes, reducing soiling and the risk of multiple banknotes being dispensed together, while still maintaining compact storage arrangement.
2Reliability
If mechanisms are incorporated to prevent multiple banknote dispensing, then dispensing accuracy improves, but device complexity increases
Solution Approach 1:
The patent designs the stack store with self-regulating features where the storage structure itself prevents multiple banknote dispensing without requiring additional active mechanisms. For example, the compartment design naturally limits the number of banknotes that can be dispensed at once, eliminating the need for complex sensors or actuators to detect and prevent misdispensing.
Solution Approach 2:
The patent employs simple, low-cost passive elements (such as thin separator sheets or disposable guide elements) within the stack store to prevent multiple banknote dispensing. These simple components are easier and cheaper to replace than complex mechanical mechanisms, reducing overall device complexity while maintaining dispensing accuracy.
3Ease of operation
If overlapping banknotes are not superposed, then the handling is simpler, but the bundle cannot be readily stored and transported
Solution Approach 1:
The patent implements a preliminary superposition mechanism that automatically aligns and superposes overlapping banknotes before they are stored or transported. This preliminary action ensures that banknotes are properly oriented and compacted, improving storage efficiency and transportability without requiring complex manual intervention during handling.
Solution Approach 2:
The patent replaces complex mechanical superposition mechanisms with simpler optical or sensor-based detection systems that identify overlapping banknotes. Once detected, a controlled superposition force is applied to align the banknotes, achieving compact bundling with less mechanical complexity than traditional mechanical alignment systems.
Data Source
AI summary
Means for superposing a bundle of value sheets which have been misfed from a value sheet store is disclosed. Also disclosed is a value sheet handler which includes a first value sheet store for receiving value sheets from, and dispensing value sheets to, a user and a second value sheet store where the second value sheet store provides value sheets to resupply the first value sheet store. The handler may include means for detecting a misfeed from the second value sheet store and a bundle of misfed value sheets may be stored in a third store after superposition of the bundle, where it includes overlapping value sheets.