Bill Housing Regulatory Member Friction Control
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Solution Overview
Problem
Existing paper sheet processing apparatuses face challenges in stably stacking severely wrinkled or damaged bills due to deflection and vibration during the housing operation, leading to mal-stacking issues.
Innovation Solution
A paper sheet processing apparatus with a housing part featuring regulatory members having a higher coefficient of friction on their contact faces than between paper sheets, which prevents sliding and deflection by ensuring a stable stacking process through the use of rubber-coated contact faces and a biasing mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional bill housing stacker with smooth contact surfaces is used, then the bill can pass through the passage opening easily, but the bill may deflect and cause mal-stacking when severely wrinkled or damaged bills are conveyed
Solution Approach 1:
The patent changes the friction parameter of the contact surfaces by coating them with rubber material. This increases the coefficient of friction between the bills and the contact surfaces, allowing severely wrinkled or damaged bills to be held firmly during the stacking process and preventing deflection into the passage opening, thereby resolving the contradiction between easy passage and stacking stability
Solution Approach 2:
The patent uses composite material construction by coating the contact surfaces with rubber material. This rubber coating provides high friction properties that prevent bill slippage and deflection during stacking, while maintaining the structural integrity of the housing stacker, thus solving the problem of mal-stacking with damaged bills
2Reliability
If compression force is applied to stack bills firmly, then the bills are securely housed, but severely wrinkled or damaged bills may deflect into the passage opening due to impact and vibration
Solution Approach 1:
The patent changes the friction parameter by using rubber-coated contact surfaces. This increased friction prevents bills from slipping or deflecting during the compression and stacking process, even when impact and vibration occur, thereby maintaining both housing security and stacking accuracy simultaneously
Solution Approach 2:
The patent converts the potentially harmful impact and vibration during bill stacking into a beneficial effect. The high-friction rubber coating ensures that even when bills are subjected to impact and vibration, they remain firmly held on the contact surfaces and do not deflect, transforming what could be a source of mal-stacking into a condition that still achieves secure housing
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 effectively prevents accumulation failures by maintaining the stability of paper sheets during housing, even under conditions of vibration or impact, ensuring accurate and secure stacking.
Implementation Method 1
a coefficient of friction on the contact face contacted by a paper sheet is higher than a coefficient of friction caused between paper sheets to be stacked and housed
Data Source
AI summary
A paper sheet processing apparatus including a housing part capable of stacking a paper sheet in a stable condition. A bill processing apparatus includes: a bill housing part capable of stacking the bill having been inserted into a bill insertion slot. The bill housing part includes a regulatory member having an opening through which a bill to be received; and a contact face which regulates a movement of the bill by contacting. The regulatory member is configured to make a coefficient of friction on the contact face contacting the bill greater than a coefficient of friction caused between stacked and housed bills.