Banknote Processing Roller Profile for Flatness Control
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Solution Overview
Problem
Existing devices for processing sheet-like objects, such as banknotes, often cause them to buckle or become curved during payout or storage, leading to unsightly and difficult handling issues for users.
Innovation Solution
The device employs a roller arrangement with at least two rollers spaced apart but positioned to interact with sheet-like objects, featuring profile elements like webs, toothing, or projections that gently press into recesses on adjacent rollers, ensuring the object is smoothed and stiffened without extensive structural changes, using variants like circumferential webs, toothed surfaces, or elastic deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If sheet-shaped objects are stored on a roll storage arrangement, then storage capacity and temporary storage are improved, but the sheet-shaped objects become bulged and curved
Solution Approach 1:
The roller arrangement applies preliminary smoothing action to the sheet-shaped object immediately after it is released from the roll storage arrangement, preventing the bulged shape from persisting during subsequent handling and dispensing operations
Solution Approach 2:
The roller arrangement acts as an intermediary device between the roll storage arrangement and the dispensing device, temporarily receiving and reshaping the sheet-shaped object to eliminate curvature before final dispensing
2Shape
If profile elements are arranged on rollers to smooth sheet-shaped objects, then smoothing effect is improved, but device complexity increases
Solution Approach 1:
The roller arrangement is divided into multiple independent rollers, each equipped with specific profile elements (ridges, grooves, or toothing), allowing the smoothing function to be distributed across several simple components rather than requiring a single complex mechanism
Solution Approach 2:
Instead of attempting to prevent curvature formation during storage, the invention applies profile elements on rollers that actively reshape the sheet-shaped object after curvature has formed, reversing the deformity through mechanical action
3Manufacturing precision
If rollers are positioned close together to smooth sheet-shaped objects, then smoothing precision is improved, but the risk of outer surfaces touching increases
Solution Approach 1:
The rollers are designed with asymmetric profile elements (such as ridges on one roller and corresponding grooves on the other) that allow the rollers to be positioned very close together for effective smoothing while the asymmetric features prevent direct contact between the outer surfaces of the rollers
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
This solution effectively smooths and stiffens sheet-like objects, preventing buckling and curvature, allowing for easier handling and storage without visible profiling, thus enhancing user experience and device efficiency.
Implementation Method 1
The at least two rollers have a predetermined distance (non-zero) between them, which is large enough to prevent their outer surfaces from touching, but simultaneously small enough to allow the rollers to act on the leaf-shaped object when it passes between the rollers
Data Source
Figure 1
Figure 2~3
Figure 4A~5
AI summary
A device (1) for processing sheet-shaped objects, in particular banknotes, comprises a conveying device (5) which forms a conveying section (52) along which sheet-shaped objects (B) are to be conveyed, and at least one roller arrangement (50) of the conveying device (5) arranged on the conveying section (52), which has at least two opposing rollers (500, 500', 501) each with a cylindrical outer surface (500A, 501A) between which a sheet-shaped object (B) is to be guided along a conveying direction (F).It is provided that at least one of the at least two rollers (500, 500', 501) has on its lateral surface (500A, 501A) a profile element (504, 505, 506, 507, 508) projecting from or pointing into the lateral surface (500A, 501A), which is designed to act on the leaf-shaped object (B) when a leaf-shaped object (B) is passed through the at least two rollers (500, 500', 501) to form a profile on the leaf-shaped object (B).