Guiding Unit Prevents Banknote Tearing in Rotary Storage

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Solution Overview

Problem

Conventional banknote depositing and dispensing machines face issues with banknotes folding and getting torn or orientation changing when fed from a rotary member, due to being caught between a belt-shaped tape and guiding rollers, leading to machine stoppages.

Innovation Solution

A paper sheet storing/feeding device with a guiding unit that prevents folded paper sheets from sandwiching the winding member, arranged to guide the paper sheet to move away from the winding member, and pivotable guiding units that adjust based on the quantity of paper sheets stored, ensuring the paper sheet is not torn or orientation changed during release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a belt-shaped tape is used to wind paper sheets on a drum, then paper sheets can be stored and fed one by one, but folded paper sheets may sandwich the tape from both sides causing tearing and machine stoppages

Engineering Contradiction:

Improvepaper sheet storage and feeding capabilityVSAvoidmachine operation continuity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

A guiding unit is introduced as an intermediary component between the tape and the paper sheet. This guiding unit prevents folded portions of the paper sheet from contacting and sandwiching the tape, thereby eliminating the harmful effect while preserving the storage and feeding function

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The guiding unit is positioned to receive and redirect folded portions of the paper sheet, converting the potentially harmful folded state into a controlled state where the folded portion is guided alongside the tape rather than sandwiching it, thus preventing damage

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If the guiding unit is positioned to prevent folded paper sheets from sandwiching the tape, then paper sheet integrity is maintained, but the device structure becomes more complex

Engineering Contradiction:

Improvepaper sheet integrity during feedingVSAvoidguiding unit structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The guiding unit utilizes a thin, flexible plate structure that can bend and adapt to the paper sheet's folded portions. This simple geometric form achieves the guiding function without requiring complex mechanical components, motors, or actuators

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The guiding unit extends in the axial direction of the drum, adding a dimensional element that intercepts folded portions before they can sandwich the tape. This spatial arrangement in a different dimension solves the problem without complicating the primary winding mechanism

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP3349193B1Paper sheet storage and discharge device

Publication Date: 2024.03.06 GLORY LTD

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AI summary

A paper sheet storing/feeding device (e.g., escrow unit 40) includes a rotary member (e.g., drum 42) to an outer peripheral surface of which one end of a belt-shaped winding member (e.g., tapes 90, 92, 94) that winds a plurality of paper sheets one by one is connected, and a guiding unit (80, 85) that guides a paper sheet to prevent the paper sheet from sandwiching the winding member from both sides when the paper sheet is fed from the rotary member by unwinding the winding member from the rotary member.