Paper Sheet Accommodating Apparatus Transmission Unit
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Solution Overview
Problem
In paper sheet accommodating apparatuses, as the reel supplies tape and the drum rolls it up, the larger roll-up diameter increases the pull-out load, making it difficult to efficiently manage tape tension and accommodate a larger capacity without excessive motor load.
Innovation Solution
A paper sheet accommodating apparatus with a transmission unit that assists the drum's rotation by co-rotating with the reels during roll-up, using a gear system to manage the rotation difference and maintain optimal tape tension, reducing the motor load and increasing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the reel supplies tape and the drum rolls it up, then the accommodation amount increases, but the pull-out load becomes larger as the roll-up diameter increases
Solution Approach 1:
A transmission unit is introduced as an intermediary mechanism between the drum and the reel. This transmission unit includes a transmission member that rotates in accordance with the drum's rotation and transmits this rotation to the reel, mediating the interaction between the two components to reduce the pull-out load on the tape
Solution Approach 2:
The direct mechanical connection between the drum and reel is replaced with a transmission system. Instead of the drum directly pulling the tape from the reel, the transmission unit converts the drum's rotation into reel rotation through a transmission member, substituting a complex direct mechanical pull system with a controlled transmission mechanism
2Quantity of substance
If the drum roll-up diameter becomes larger, then the accommodation amount increases, but the motor load becomes excessive
Solution Approach 1:
The transmission unit acts as a mediator that reduces the motor load by converting the drum's rotational motion into reel rotation. This intermediary mechanism allows the system to accommodate larger amounts of tape without requiring proportionally larger motor power, as the transmission system manages the load distribution
3Quantity of substance
If the tape is pulled out from the reel with larger diameter, then the roll-up capacity increases, but the tape tension becomes difficult to manage
Solution Approach 1:
The transmission unit provides a feedback mechanism where the drum's rotation automatically controls the reel's rotation. As the drum rotates to roll up tape, the transmission member converts this motion to rotate the reel, creating a self-regulating system that maintains appropriate tape tension through the mechanical feedback loop between drum and reel rotation
Solution Approach 2:
The transmission member serves as an intermediary that regulates the force transmission between drum and reel. This intermediary controls the tape tension by managing the rotational transfer, preventing excessive tension even as the roll-up capacity increases
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
The solution reduces the motor load during roll-up operations, allowing for higher-speed processing and increased capacity without requiring high-output motors, while also reducing the cost and size of the drive mechanism.
Implementation Method 1
a transmission unit configured to transmit, at a time of roll-up of the belt-like member that is caused by rotation of the drum, rotation of the reel co-rotating with the roll-up, to the drum, to assist rotation of the drum
Data Source
AI summary
A paper sheet accommodating apparatus includes: a reel configured to supply a winded belt-like member; a drum configured to roll up a paper sheet together with the belt-like member supplied from the reel; and a transmission unit configured to transmit, at a time of roll-up of the belt-like member that is caused by rotation of the drum, rotation of the reel co-rotating with the roll-up, to the drum, to assist rotation of the drum.