Banknote Storage Bag Sealing Tension Control
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Solution Overview
Problem
Existing paper sheet handling apparatuses face issues with seal failures and improper sealing of storage bags due to weight distribution and tension when storing large amounts of banknotes, leading to potential hanging of the storage bag end and inadequate heat sealing.
Innovation Solution
The apparatus employs a configuration where holding members with heating elements and a stage system control the storage bag's opening and bottom for precise heat sealing, adjusting the bag's tension and position to prevent hanging and ensure proper sealing, using a pantograph mechanism and biasing lever to manage banknote distribution and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a large amount of banknotes are stored in the storage bag, then the storage capacity is improved, but the weight of the stored banknotes causes the end portion of the storage bag to hang down and creates large tension, leading to seal failure
Solution Approach 1:
The heating member performs heat sealing on the storage bag before the banknotes are fully stored and the bag is removed from the holding members. This preliminary sealing action prevents the bag from hanging down and creating excessive tension that would cause seal failure, while still allowing the bag to accommodate large quantities of banknotes
Solution Approach 2:
The system uses movable holding members that can adjust their position and apply dynamic control during the sealing process. The holding members maintain the bag in a proper position during sealing, adapting to the weight and volume of banknotes being stored, thereby preventing seal failure while maximizing storage capacity
2Device complexity
If the opening of the storage bag is heat-sealed while the bag is held by the holding members, then the sealing process is simplified, but the tension applied to the storage bag becomes large and prevents proper heat sealing
Solution Approach 1:
The holding members apply counteracting force to balance the tension created by the weight of banknotes in the storage bag. This counterweight effect reduces the net tension on the bag during sealing, allowing proper heat sealing to occur while maintaining the simplified process of sealing the bag while it is held
3Quantity of substance
If the stage is lowered to maintain storage space for banknotes, then the storage capacity is improved, but the distance between the upper end of the storage bag and the heating member increases, affecting sealing efficiency
Solution Approach 1:
The system dynamically adjusts the position of the heating member and/or the stage to maintain optimal sealing conditions regardless of the storage volume. When the stage is lowered to accommodate more banknotes, the heating member position is adjusted accordingly to maintain the necessary distance for effective heat sealing, thus preserving both storage capacity and sealing efficiency
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 configuration ensures reliable and proper sealing of the storage bag opening, preventing seal failures and maintaining the bag's integrity by managing tension and weight distribution, allowing for efficient handling and storage of banknotes.
Implementation Method 1
heat is applied to a portion of the storage bag near the opening thereof by the heating member, whereby the opening of the storage bag is heat-sealed
Data Source
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AI summary
A paper sheet handling apparatus (for example, a banknote handling apparatus 20) includes a holding unit (for example, each holding member 36) configured to hold a portion of the storage bag 34 near an opening thereof, a sealing unit (for example, each heating member 38) configured to seal the opening of the storage bag 34 held by the holding unit, and a placement unit (for example, each stage 40) that is movable in a substantially vertical direction and on which at least a part of the storage bag 34 held by the holding unit is placed. When a sealing process is performed, the placement unit on which at least a part of the storage bag 34 held by the holding unit is placed is raised.