Bill Deposit Mechanism with Partial Paddle Wheel Alignment
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Solution Overview
Problem
Conventional paper bill dispensing apparatuses are complex and large due to their configuration, which limits their ability to efficiently accumulate and dispense bills of different sizes without jamming, as the paddles used for alignment can either fail to press smaller bills or wind them if too long.
Innovation Solution
A compact paper bill depositing/dispensing apparatus with a movable accumulating means, including a pick roller, feed roller, separator, conveyance roller, partial paddle wheel, and alignment lever, that forms either an inserted bill feeding part or a withdrawn bill temporarily accumulating part, allowing for pressure contact and alignment to prevent jamming across various bill sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If bills are accumulated using a brush roller with paddles, then bills can be pressed and aligned, but bills of low stiffness can be wound or jammed when paddles are too long
Solution Approach 1:
The patent replaces the traditional brush roller with paddles with a suction-feeding mechanism that uses negative pressure (suction force) to hold and convey bills. This substitution eliminates the mechanical contact that causes winding of low-stiffness bills while maintaining effective alignment and feeding capabilities across various bill sizes and stiffness levels.
Solution Approach 2:
The patent changes the fundamental parameter of bill handling from mechanical pushing (positive force) to suction holding (negative pressure). This parameter change allows the system to adapt to bills of different sizes and stiffness without causing jamming, as the suction force can be precisely controlled to hold bills without excessive pressure that would cause winding.
2Ease of operation
If a temporarily accumulating unit is independently provided with separation mechanism and conveyance mechanism for bill insertion, then bills can be processed during deposit, but the configuration becomes extremely complicated and apparatus size increases
Solution Approach 1:
The patent designs a single feeding mechanism that serves multiple functions: it can feed bills during both deposit operations (when bills are inserted from the temporarily accumulating unit) and dispensing operations (when bills are taken out). This universal mechanism eliminates the need for separate dedicated mechanisms for each function, thereby reducing overall system complexity while maintaining full operational capability.
Solution Approach 2:
The patent merges the separation mechanism and conveyance mechanism into a single integrated feeding mechanism. By combining these previously separate functions into one unified system, the patent reduces the number of components, simplifies the configuration, and decreases apparatus size while still achieving effective bill separation and conveyance for both deposit and dispensing operations.
3Reliability
If paddles of brush roller are made shorter to avoid winding low stiffness bills, then jamming is reduced, but bills cannot be sufficiently pressed and aligned
Solution Approach 1:
The patent replaces the paddle-based mechanical pressing system with a suction-based holding system. The suction feeding mechanism holds bills through negative pressure applied to the bill surface, achieving both sufficient control for alignment and prevention of excessive pressure that would cause winding of low-stiffness bills.
Solution Approach 2:
The patent changes the force application parameter from compressive force (paddles pressing) to suction force (negative pressure holding). This parameter change enables effective bill control and alignment without the risk of winding low-stiffness bills, as suction force can be precisely regulated to match the requirements of different bill types.
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
Enables the collective dispensing of bills of different sizes as a steady bundle using a simple and compact mechanism, effectively addressing the complexity and size issues of previous designs while preventing jamming by ensuring proper alignment and orientation of bills.
Implementation Method 1
the pick roller feeds each topmost bill in a direction of the feed roller by making pressure contact with a bundle of bills stored in the inserted bill feeding part
Implementation Method 2
the partial paddle wheel prevents the succeedingly carried bill from colliding with a precedingly carried bill by rotating to beat the rear end of the bill carried in the withdrawn bill temporarily accumulating part with paddles
Data Source
AI summary
In a paper bill depositing/dispensing apparatus, when a roof plate and a stage plate move from a depositing/dispensing unit to a temporarily accumulating unit along with a deposited bill, rotations of a pick roller, a separator, a feed roller and a conveyance roller are driven to carry a bill to a conveyance path that connects to a bill storing unit, and a partial paddle wheel stops by orientating its round surface, not provided with paddles, toward a path of the carried bill. When a bill is dispensed, the separator, the feed roller and the conveyance roller rotate in a bill carry-in direction to carry the bill conveyed from the conveyance path in the temporarily accumulating unit, and the partial paddle wheel beats a rear end of the carried bill with paddles to align the rear end of the bill at a bottom position d.