Banknote Storage Bag Sealing Segmentation
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Solution Overview
Problem
Existing paper sheet handling apparatuses face challenges in preventing empty space generation inside storage bags and determining if the storage bag opening has been illegally opened.
Innovation Solution
A paper sheet handling apparatus with a holding unit, first and second bonding units, and a placement unit that thermally bonds the bottom part of the storage bag and seals the opening using a bonding material, preventing empty space and allowing for easy detection of illegal opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the opening of the storage bag is sealed by thermal bonding, then the sealing process is simple and fast, but it becomes difficult to determine if the storage bag has been illegally opened
Solution Approach 1:
The sealing function is divided into two separate units: a first bonding unit for thermal bonding and a second bonding unit for applying bonding material. This segmentation allows each unit to specialize in one sealing method, enabling the thermal bonding unit to operate quickly while the bonding material unit provides detectable sealing evidence.
Solution Approach 2:
Different sealing methods are applied to different locations: thermal bonding is applied at the bottom part of the storage bag where speed is critical, while bonding material is applied at the opening where detectability is critical. This local differentiation resolves the contradiction between sealing speed and detection capability.
2Device complexity
If only the opening of the storage bag is sealed, then the device structure is simple, but empty space may be generated inside the storage bag
Solution Approach 1:
The first bonding unit performs preliminary sealing at the bottom part of the storage bag before the bag is fully filled. This preliminary action prevents empty space formation from the beginning, ensuring stable composition without requiring complex additional structures.
3Difficulty of detecting and measuring
If bonding material is applied at the opening, then illegal opening can be easily detected, but the sealing process becomes more complex
Solution Approach 1:
The sealing device is segmented into two independent bonding units with different functions. The second bonding unit specifically applies bonding material at the opening area, adding detection capability without requiring complete redesign of the entire sealing system.
Solution Approach 2:
The bonding material application unit can serve multiple purposes: sealing the opening, providing detectable evidence of opening, and potentially indicating filling status. This multi-functionality justifies the added complexity by providing multiple benefits from a single unit.
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 solution effectively prevents empty space inside the storage bag and facilitates the identification of illegal opening attempts by leaving a visible seal on the storage bag.
Implementation Method 1
a first bonding unit configured to thermally bond and seal a portion to be a bottom part of the storage bag
Implementation Method 2
a second bonding unit configured to bond and seal the opening of the storage bag with a bonding material
Data Source
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AI summary
A paper sheet handling apparatus (for example, a banknote handling apparatus 20) for storing a paper sheet inside a storage bag 34 provided with an opening includes a first bonding unit (for example, each heating member 42) configured to thermally bond and seal a portion to be a bottom part of the storage bag 34 held by the holding unit (for example, each holding member 36) when the paper sheet is stored in the storage bag 34 and a second bonding unit (for example, each holding member 36) configured to bond and seal an opening 34p of the storage bag 34 held by the holding unit with a bonding material (for example, each bonding part 34f).