Paper Sheet Stacking Mechanism With Coaxial Roller
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Solution Overview
Problem
Conventional paper sheet stacking mechanisms fail to securely stack limp paper sheets in an aligned state due to the resilience of the paper sheets, which causes them to be thrust out of the stacking wheel gap before the front end edge contacts the guide member, especially in compact mechanisms with higher resilience.
Innovation Solution
A paper sheet stacking mechanism featuring a stacking wheel with vanes and a coaxial roller rotating at a higher angular velocity, where the discharge position of the paper sheet is positioned outward from the stacking wheel's base and within the circular region defined by the vanes, ensuring the paper sheet is held in the gap until it contacts the guide member, using a transport unit with a frictional member and auxiliary rollers to manage paper sheet alignment and resilience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the discharge position is disposed outward from the circular region defined by the tips of the vanes, then the paper sheet can be discharged from the transport unit, but the stacking wheel cannot securely receive limp paper sheets
Solution Approach 1:
The patent introduces an intermediary region (the circular region defined by the vanes) between the discharge position and the stacking wheel reception point. The discharge position is placed outward from this circular region, allowing the paper sheet to be discharged while the vanes guide and secure it during transport to the stacking wheel, solving both discharge ease and reception reliability.
2Productivity
If the paper sheet is transported to the gap between vanes, then stacking is enabled, but the resilience of the paper sheet causes it to be thrust out of the gap before contacting the guide member
Solution Approach 1:
The patent applies preliminary action by having the vanes engage and guide the paper sheet into the gap before the resilience of the paper sheet can cause it to be thrust out. The vanes maintain the paper sheet in position throughout the transport process, ensuring it remains aligned and contacts the guide member properly for accurate stacking.
3Volume of moving object
If the stacking wheel is made compact, then device size is reduced, but the paper sheet resilience increases causing more significant stacking failures
Solution Approach 1:
The patent changes the parameter of discharge position location, placing it outward from the circular region defined by the vanes. This allows the compact stacking wheel to maintain adequate van e engagement with the paper sheet throughout the stacking process, preventing resilience-induced failures even in a compact configuration.
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 mechanism securely stacks paper sheets in an aligned state by maintaining the paper sheet within the stacking wheel gap until it is properly aligned, preventing pushing-back and ensuring accurate stacking even with limp sheets, thus improving the reliability of compact paper sheet stacking.
Implementation Method 1
a roller which is disposed adjacent to the stacking wheel so as to be coaxial with the stacking wheel, the roller which is rotatable about the shaft at a greater angular velocity than the angular velocity of the stacking wheel
Data Source
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AI summary
A paper sheet stacking mechanism 50 includes a stacking wheel 52, a roller 54 that is disposed outward from the stacking wheel 52 so as to be coaxially aligned with the stacking wheel 52 and that is rotatable about a shaft 53 at a greater angular velocity than that of the stacking wheel 52, and a transport unit that is configured to transport a paper sheet to the gap between two adjacent vanes 52b of the stacking wheel 52. The transport unit is located such that a discharge position is disposed outward from the outer periphery of the base 52a of the stacking wheel 52 and inward of the circular region defined by the tips of the vanes 52b of the stacking wheel 52 during the rotation of the stacking wheel 52, when viewed in the axial direction of the shaft 53 of the stacking wheel 52.