Arc Groove Flattening Rollers for Banknote Curling
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Solution Overview
Problem
Conventional methods fail to effectively and quickly flatten curled banknotes in financial self-service equipment, leading to unsmooth conveying, jamming, and reduced reliability in banknote operations.
Innovation Solution
A flattening device with a holder, a pair of oppositely arranged flattening rollers having arc-shaped grooves and protrusions, and a power mechanism to drive them, ensuring rolling engagement and reverse bending deformation of curled banknotes, enhancing the flattening effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional flattening methods are used, then banknotes pass through a passage with opposite bending direction, but the flattening effect is unobvious or nonexistent due to high transmission speed
Solution Approach 1:
The invention changes the physical parameters of the flattening mechanism by introducing arc-shaped grooves and protruding portions with specific curvature radii. The grooves have a curvature radius R1 and the protruding portions have a curvature radius R2, where R1 > R2. This parameter change creates a more effective flattening action that can overcome the high transmission speed of banknotes in financial self-service equipment.
Solution Approach 2:
The invention applies curvature principles by designing arc-shaped grooves and arc-shaped protruding portions on the flattening rollers. The arc-shaped structure allows for better contact and deformation of the banknotes during the flattening process. The specific curvature radii (R1 for grooves, R2 for protruding portions) are optimized to match the typical curvature of curled banknotes, enabling effective flattening even at high transmission speeds.
2Reliability
If conventional flattening passages are used, then banknotes are forced to bend reversely, but conveying becomes unsmooth and jamming occurs at turning positions
Solution Approach 1:
The invention optimizes the geometric parameters of the flattening rollers, including the curvature radii of grooves (R1) and protruding portions (R2), as well as the spacing and distribution of these features. By carefully selecting these parameters, the device achieves smooth banknote conveying without jamming, while maintaining a relatively simple passage structure.
3Reliability
If conventional flattening methods are used, then banknote ends become bent, but this obstructs banknotes from entering the banknote entrance and affects operation reliability
Solution Approach 1:
The arc-shaped grooves and protruding portions are designed with specific curvature radii that match the typical curling radius of banknotes. This curvature matching allows the flattening rollers to effectively reverse and flatten the banknote curls, including at the ends, ensuring that banknotes can properly enter the banknote entrance and maintain high operation reliability.
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 device effectively reduces the curling degree of banknotes, improving the reliability and stability of banknote transmission, identification, and stacking operations within financial self-service equipment.
Implementation Method 1
make the banknote pass through a passage having a bending direction opposite to a direction in which the banknote is bent, to force the banknote to bend and deform reversely
Data Source
AI summary
A flattening device includes: a holder configured to support the following components; at least one flattening roller set, including a first flattening roller and a second flattening roller arranged oppositely at two sides of a sheet medium conveying path; and a power mechanism configured to drive the first and second flattening rollers to rotate. A surface of the first flattening roller is distributed with n arc-shaped grooves arranged in parallel with an axis direction of the first flattening roller, wherein n is a natural number greater than or equal to 1; and a surface of the second flattening roller is provided with at least one arc-shaped protruding portion in rolling engagement with the arc-shaped grooves of the first flattening roller; and wherein, the first flattening roller and the second flattening roller are in rolling engagement to form a conveying passage for the sheet medium.