Rotating Stacking Tray for Continuous Banknote Processing
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Solution Overview
Problem
Conventional banknote counting devices experience downtime and efficiency issues when stacking and processing large numbers of banknotes, as they require manual intervention to remove stacked batches and bundle banknotes, leading to prolonged waiting times and reduced processing speed.
Innovation Solution
A banknote processing device with a bladed wheel and stacking tray system that allows continuous processing by rotating the tray to switch between stacking positions, enabling sequential emission and stacking of banknotes without manual intervention, thus minimizing downtime and maintaining high-speed processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional single stacker is used for banknote stacking, then the device structure is simple, but processing downtime increases when a predetermined number of banknotes are stacked
Solution Approach 1:
The stacking tray is divided into multiple stacking areas (first stacking area, second stacking area, etc.) that can independently receive and hold banknotes. When one stacking area is full, the system can switch to another area without stopping the counting process, thereby eliminating downtime and maintaining continuous productivity.
2Productivity
If multiple stackers are provided to eliminate standby state, then processing continuity is improved, but device size and cost increase
Solution Approach 1:
Multiple stacking areas are integrated into a single stacking tray rather than using separate stackers. This merging approach provides the functionality of multiple stackers (continuous processing) while maintaining a compact structure and avoiding the increased device size and cost associated with multiple independent stacker units.
3Productivity
If high-speed processing is implemented, then productivity increases, but paper sheet jamming in the bladed wheel increases
Solution Approach 1:
The system performs preliminary separation of banknotes in the bladed wheel before high-speed stacking. By ensuring proper spacing and positioning of banknotes before they enter the stacking area, the system prevents jamming even at high processing speeds of 15 sheets per second or more.
4Productivity
If continuous stacking is performed without removing stacked batches, then productivity improves, but the stacking area becomes occupied
Solution Approach 1:
The stacking tray utilizes radial positioning around a rotary shaft to create multiple stacking areas in different angular positions. This spatial arrangement in the radial dimension allows multiple stacking operations to occur simultaneously in different areas, enabling continuous processing without occupying the same stacking space.
Data Source
AI summary
The paper sheet processing device includes a bladed wheel 10, a paper sheet supply/transport unit 30, 100, a stacking tray 50 that holds paper sheets emitted from the bladed wheel one by one in a stacked state, and an extraction area 80. The stacking tray includes a first stacking part 51 that stacks thereon paper sheets being emitted when at a paper sheet stacking position P1, and is rotationally moved to a non-stacking position P2 when a predetermined number of paper sheets are stacked thereon, and a second stacking part 61 that is moved to the paper sheet stacking position to stack paper sheets thereon when being rotated by a predetermined angle from the non-stacking position, and is rotationally moved to the non-stacking position when the predetermined number of paper sheets are stacked thereon.