Swirling Vane Wheel Accumulator for Low-Stiffness Banknotes
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Solution Overview
Problem
Conventional swirling vane wheel accumulating apparatuses experience jamming issues when storing banknotes or forms with low stiffness, leading to unstable accumulation and potential collisions with the device's walls, which increases the device's size unnecessarily.
Innovation Solution
The apparatus includes a central upper guide member and both ends lower guide members that curve the paper sheet into a U-shape, combined with a rotating vane wheel and up-and-down stage, to securely hold and disengage the sheet without hanging or colliding, ensuring stable accumulation without increasing the device's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional swirling vane wheel accumulating apparatus is used to store banknotes with low stiffness, then the banknotes can be accumulated in the storing unit, but the banknotes hang down when beaten by the vanes, causing unstable accumulation and potential jamming
Solution Approach 1:
The guide members are positioned to pre-curve the banknote into a U-shape before the banknote enters the swirling vane wheel. This preliminary shaping action ensures that low-stiffness banknotes maintain their curved configuration throughout the accumulation process, preventing them from hanging down when beaten by the vanes and eliminating the need for additional corrective measures during operation.
2Device complexity
If the device is designed to accommodate low-stiffness banknotes without curving mechanisms, then the device structure remains simple, but the banknotes collide with the rear of other banknotes and cause jamming
Solution Approach 1:
The guide members act as intermediary elements between the banknote entry and the swirling vane wheel. These guide members gently curve the banknote into a U-shape without requiring complex mechanical mechanisms, thereby maintaining relatively simple device structure while effectively preventing banknote collision and jamming through the intermediate curving action.
3Adaptability or versatility
If heavily wrinkled or worn-out banknotes with low stiffness are stored in the reject storing unit, then the reject storing function is fulfilled, but the banknotes are identified as defective and cause unstable accumulation
Solution Approach 1:
The guide members change the physical parameter of the banknote by curving it into a U-shape before entry into the swirling vane wheel. This parameter change (from flat to curved) compensates for the low stiffness of heavily wrinkled or worn-out banknotes, allowing them to maintain their shape during accumulation and be reliably stored in the reject storing unit without causing instability or jamming.
Data Source
AI summary
Large-diameter entry rollers, and small-diameter entry rollers pressing against the large-diameter entry rollers via a conveyance belt enter a paper sheet in an accumulation part via an entrance slot. A central upper guide member makes contact with an upper surface of a central portion of the banknote. Both sides lower guide members guide the banknote while causing the banknote to curve in the shape of large U in a direction orthogonal to a conveyance direction of the banknote by lifting up both ends of the banknote entered in the accumulation part with the use of an upwardly curved tip. The front end of the banknote does not hang down despite being beaten by vanes, and the banknote goes between the vanes. The banknote is rotationally conveyed, hits the stoppers to stop, is disengaged from a swirling vane wheel, and is accumulated.