Paper Sheet Shifting Mechanisms for High-Speed Precise Positioning
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Solution Overview
Problem
Existing sheet handling apparatuses face challenges in accurately shifting sheets to a predetermined position in the width direction while maintaining high transport speed, leading to complex and expensive configurations when multiple mechanisms are required.
Innovation Solution
A sheet handling apparatus with a first sheet shifting mechanism that provides a constant shift amount and a second mechanism with adjustable shift amount, utilizing skew rollers and slidable transporting members, along with detection sensors to ensure precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If skewed rollers are used to shift banknotes in the width direction, then transport speed can be made relatively high, but the banknote cannot be accurately shifted to a predetermined position in the width direction
Solution Approach 1:
The sheet shifting function is divided into two independent mechanisms: the first sheet shifting mechanism (skewed rollers) provides rough positioning at high speed, while the second sheet shifting mechanism (slidable transporting member) provides fine adjustment for accurate positioning. This segmentation allows each mechanism to specialize in one aspect, resolving the contradiction between speed and precision.
Solution Approach 2:
The slidable transporting member in the second sheet shifting mechanism can dynamically adjust its position in the width direction based on the detected sheet position, enabling accurate positioning while maintaining high transport speed through coordinated control of both mechanisms.
2Productivity
If multiple sliding-type transport mechanisms are disposed to increase transport speed, then sheet positioning accuracy can be maintained, but the configuration of the entirety of the apparatus becomes complicated and expensive
Solution Approach 1:
The invention merges two different sheet shifting mechanisms (skewed rollers and slidable transporting member) into a coordinated system where the first mechanism handles high-speed rough shifting and the second mechanism handles precision positioning. This combination achieves high productivity without requiring multiple identical sliding mechanisms, thereby reducing apparatus complexity and cost.
Solution Approach 2:
The first sheet shifting mechanism with skewed rollers serves a dual function: it provides both the primary sheet shifting capability and contributes to positioning accuracy when coordinated with the second mechanism. This multi-functionality reduces the need for additional dedicated components, simplifying the overall apparatus 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 apparatus achieves accurate sheet positioning at predetermined locations with simplified and cost-effective configuration, allowing for increased transport speed without complicating the system.
Implementation Method 1
a banknote-position shifting device that includes skew rollers which are skewed relative to the extending direction of the transport path. In such a banknote-position shifting device, when a banknote is transported by the skew rollers, the banknote is shifted in the width direction of the transport path.
Implementation Method 2
a sheet transport apparatus in which a sliding-type transport mechanism implemented by a combination set of rollers and a guiding member is slidable along the width direction of the transport path. In such a sheet transport apparatus, when a sheet is transported by the rollers of the sliding-type transport mechanism, the sliding-type transport mechanism itself slides along the width direction of the transport path, thereby shifting the sheet in the width direction.
Data Source
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AI summary
A sheet handling apparatus (1) includes a first sheet shifting mechanism (20) disposed in a sheet transporting direction, and a second sheet shifting mechanism (30) disposed downstream of the first sheet shifting mechanism (20), as a plurality of kinds of sheet shifting mechanisms disposed along an extending direction of a transport path (2), and configured to shift a transported sheet in a width direction. Each of the first sheet shifting mechanism (20) and the second sheet shifting mechanism (30) has a different mechanism to shift the sheet in the width direction.