Movable Section Pressing Banknotes Against Drum to Prevent Jams
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Solution Overview
Problem
Automated teller machines face reliability issues due to banknotes tearing at the edge portion during circulation, leading to paper jams when dispensing, as the torn edges can curl and enter gaps between moving parts, disrupting the conveyance process.
Innovation Solution
A medium storage and feed-out device featuring a circular drum with a tape system and a movable section that sandwiches the medium, preventing it from entering gaps by following the movable section and facing portion, ensuring secure conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional temporary holding section with a drum and tapes is used to store and dispense banknotes, then the device can perform automated cash transactions, but banknotes with torn edges can curl and enter gaps between moving parts, causing paper jams and reducing conveyance reliability
Solution Approach 1:
The invention applies preliminary anti-action by positioning the movable section to press the banknote against the drum outer peripheral face before the banknote can curl and enter the gap between the movable guide and casing. This preventive pressing action counteracts the curling tendency of torn-edge banknotes, stopping the harmful effect before it causes a paper jam.
Solution Approach 2:
The movable section acts as an intermediary element between the banknote and the gap between moving parts. By pressing the banknote against the drum, the movable section mediates the interaction, preventing direct contact between the curled banknote edge and the gap, thus eliminating the paper jam problem.
2Adaptability or versatility
If the movable guide swings to follow changes in drum thickness, then the device can accommodate varying banknote stacks, but a gap opens up between the movable guide and the inside face of the casing, allowing curled banknote portions to enter
Solution Approach 1:
The movable section serves as an intermediary that fills the gap created by the movable guide's movement. As the movable guide swings to adapt to thickness changes, the movable section maintains contact with the banknote, preventing the banknote from entering the gap between the movable guide and casing.
Solution Approach 2:
The movable section applies preliminary anti-action by pressing the banknote against the drum before the banknote can be deflected into the gap. This continuous pressing action counteracts the potential harmful effect of the gap, maintaining conveyance reliability despite the adaptability feature.
3Stability of the object's composition
If banknotes are wound onto the drum outer peripheral face between the tape and drum, then the medium can be retained securely, but torn portions can lift and curl during drum rotation, leading to conveyance failures
Solution Approach 1:
The movable section applies preliminary anti-action by pressing the banknote against the drum outer peripheral face, preventing the torn portions from lifting and curling during drum rotation. This counteracts the destabilizing effect before it can cause conveyance failure.
Solution Approach 2:
The movable section changes the pressure parameter applied to the banknote, maintaining sufficient pressure to prevent curling while allowing the drum to rotate. This parameter adjustment resolves the contradiction between secure retention and reliable conveyance.
Data Source
AI summary
A temporary holding section winds banknotes onto an outer peripheral face of a circular, cylinder-shaped and rotatably supported drum to retain the banknotes between a facing portion and the outer peripheral face. More specifically, the temporary holding section uses an upper side tape and a lower side tape, that respectively have one end wound onto the drum, such that accompanying rotation of the drum, the supplied banknotes are sandwiched between the tapes and the outer peripheral face. Moreover, in the temporary holding section, a movable section that presses the banknote against the drum outer peripheral face while being movable with respect to the drum is positioned with the other end further away from the drum than the facing portion.