Paper-sheet counting machine shutter mechanism for dust and noise control

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Solution Overview

Problem

Conventional banknote counting machines suffer from dust and noise leakage issues, where dust accumulates and is blown out towards operators, and internal noise escapes during operation due to the design of the stacking units and shutters.

Innovation Solution

A paper-sheet counting machine with a shutter mechanism that closes the front opening of the stacking unit, driven by a shutter drive unit controlled by a control unit, to prevent dust and noise leakage, featuring a rotary guide unit with vanes and elastic members for efficient operation and safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the stacking unit has an open front face for easy access to stacked paper sheets, then the ease of operation is improved, but dust and noise leak to the outside

Engineering Contradiction:

Improveaccess to stacked paper sheetsVSAvoiddust and noise leakage

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The front face of the stacking unit is segmented into a fixed frame and a movable shutter that can be independently controlled. This allows the opening to be divided into a static structure and a dynamic closure element, enabling selective opening and closing to balance accessibility with dust and noise prevention.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The shutter is designed as a movable component that can dynamically change its position between open and closed states. This dynamic element allows the stacking unit to adapt its front face configuration based on operational requirements, providing ease of access when needed and sealing when dust and noise control is prioritized.

Inventive Principle:

Principle #15Dynamics

2Reliability

If the shutter is positioned at the upper part of the stacking unit for locking function, then the reliability is improved, but the dustproof effectiveness is reduced

Engineering Contradiction:

Improvelocking functionVSAvoiddust leakage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

Instead of positioning the shutter at the upper part as in conventional designs, the shutter is inverted to the front face of the stacking unit. This inversion allows the shutter to directly block the opening where dust and noise escape, while the locking function is maintained through the engagement mechanism between the shutter and frame.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The shutter acts as an intermediary element between the internal stacking space and the external environment. By positioning it at the front face, it serves as a direct barrier against dust and noise leakage, while still providing the locking function through its engagement with the frame structure.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10023420B2Paper-sheet counting machine

Publication Date: 2018.07.17 GLORY LTD

AI summary

A paper-sheet counting machine (10) includes: a recognition and counting unit (24) configured to count paper sheets; a stacking unit (26) configured to stack therein the paper sheets that have been counted by the recognition and counting unit (24), an opening being provided in a front face of the stacking unit (26); a rotary guide unit (28) provided to the stacking unit (26) and configured to allow the paper sheets that have been counted by the recognition and counting unit (24) to be stacked in the stacking unit (26); a shutter (40) configured to close the opening provided in the front face of the stacking unit (26); a shutter drive unit (50) configured to drive the shutter (40) to open and close the opening provided in the front face of the stacking unit (26); and a control unit (70) configured to control the shutter drive unit (50).