Drive Transmission Switching for Single-Motor Banknote Circulation
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Solution Overview
Problem
Circulation-type banknote processing devices require two motors to drive two circulation drums, leading to increased size, weight, and cost, as well as a decrease in the number of banknotes stacked in each drum.
Innovation Solution
A drive transmission switching mechanism that allows a single motor to drive two circulation units by selectively switching and transmitting the drive force to either unit, activated in conjunction with a sorter that changes the posture of transported paper sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two circulation drums are provided in parallel to store banknotes of different denominations, then the storage capacity and functionality are improved, but the number of motors increases to two, causing increased size, weight, and cost
Solution Approach 1:
A single motor is designed to perform multiple functions by sequentially driving both circulation drums through a drive transmission switching mechanism. The motor alternates between driving the first circulation drum and the second circulation drum, enabling one motor to replace two while maintaining the ability to store and dispense banknotes of different denominations through both drums.
Solution Approach 2:
The drive transmission switching mechanism dynamically switches the drive force transmission path between the single motor and the two circulation drums. By using switching elements that can change their connection state based on operational requirements, the system enables one motor to adaptively drive either drum as needed, reducing the fixed complexity of having two dedicated motors.
2Adaptability or versatility
If two circulation drums are provided in parallel, then the functionality for handling different denominations is improved, but the size and weight of the storage unit increase
Solution Approach 1:
The single motor serves both circulation drums sequentially, eliminating the need for two separate motors and their associated mounting structures, power connections, and control circuits. This multi-functional approach significantly reduces the overall weight of the storage unit while preserving the functionality to handle different banknote denominations through both drums.
3Adaptability or versatility
If two circulation drums are provided in parallel, then the storage capacity is improved, but the number of banknotes stacked in each drum decreases
Solution Approach 1:
The single motor continuously alternates between driving the first and second circulation drums, ensuring that both drums remain operational and can accumulate banknotes over time. This continuous operation allows each drum to maintain a substantial stack of banknotes while the system as a whole provides enhanced adaptability for handling different denominations, effectively resolving the trade-off between individual drum capacity and overall system versatility.
Data Source
AI summary
Provided is a drive transmission switching mechanism that can switch and drive two circulation units by one motor in response to a switching operation of a paper sheet transport direction. A paper sheet storage unit includes a first circulation unit 100 and a second circulation unit 200 that respectively receive transported paper sheets upon reception of a drive force from a single motor 302 and feed paper sheets stored therein, a sorter 310 that sorts paper sheets to either one of the circulation units, and a drive transmission switching mechanism 400 that transmits a drive force from the motor to either one of the circulation units. The drive transmission switching mechanism is activated in conjunction with an operation to change the posture of the sorter, thereby switching and transmitting the drive force to either one of the circulation units.