Dynamic Banknote Stacking Gap Control to Prevent Jams
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Solution Overview
Problem
Banknote stacking devices often experience paper jams due to inconsistent gaps between banknotes and support members, particularly with banknotes of smaller dimensions, leading to inefficient stacking and reliability issues.
Innovation Solution
A paper sheet stacking device with a conveyance mechanism, a stacking mechanism featuring a first and second space regulating member, and a controller that adjusts the position of the second space regulating member based on the outer dimension of the banknotes to maintain a consistent gap and prevent jams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dimensions between the support member and the wall member are kept constant, then the structure is simple, but a large gap is formed when banknotes with small outer dimensions are stacked, causing paper jams
Solution Approach 1:
The patent applies the dynamics principle by making the second space regulating member movable instead of fixed. The controller adjusts the position of the second space regulating member based on the outer dimensions of the banknotes being stacked. This dynamic adjustment allows the gap between the support member and the second space regulating member to adapt to different banknote sizes, preventing paper jams while maintaining a relatively simple overall structure.
2Adaptability or versatility
If a fixed stacking space is used, then the device structure is simple, but banknotes of different dimensions cannot be properly stacked without causing jams
Solution Approach 1:
The patent makes the stacking space adaptable by enabling the second space regulating member to move dynamically. The controller receives information about banknote dimensions and adjusts the position of the second space regulating member accordingly, allowing the same stacking mechanism to handle various banknote sizes without structural modification.
Solution Approach 2:
The patent applies parameter changes by modifying the position parameter of the second space regulating member based on banknote outer dimensions. The controller changes the spatial parameter (position) of the space regulating member to match different banknote sizes, enabling versatile stacking without increasing device complexity.
3Manufacturing precision
If the gap between banknotes and the wall member is large, then small banknotes can be stacked, but paper jams occur due to inconsistent positioning
Solution Approach 1:
The patent implements feedback control where the controller receives information about banknote outer dimensions and uses this feedback to adjust the position of the second space regulating member. This closed-loop control ensures that the gap is appropriately sized for each banknote type, achieving precise positioning without causing paper jams, thereby maintaining high stacking efficiency.
Data Source
AI summary
A paper sheet stacking device includes: a conveyance mechanism that conveys paper sheets; a stacking mechanism including a stacking space in which the paper sheets, which are conveyed by the conveyance mechanism, are stacked, a first space regulating member that moves in a thickness direction of the paper sheets in the stacking space, a support member that extends in the moving direction of the first space regulating member and supports one side of the paper sheets in the stacking space, and a second space regulating member that is provided to face the support member and moves in a direction toward and away from the support member; and a controller that controls the stacking mechanism. The controller controls a position of the second space regulating member in accordance with an outer dimension of the paper sheets that are conveyed into the stacking space by the conveyance mechanism.