Adjustable Guide Element Layout for Value Document Sensors
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Solution Overview
Problem
Existing document processing devices face transport issues due to the risk of valuables getting caught on sensor edges or guide elements, leading to bottlenecks and entanglement, especially when multiple sensors are positioned closely to the transport plane.
Innovation Solution
The device incorporates adjustable guide elements that can be positioned relative to the transport plane to accommodate different sensor distances, allowing flexible placement of sensors without causing transport problems by adjusting the distance of the guide elements from the transport plane to match the required sensor positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor is positioned very close to the transport plane, then measurement precision is improved, but the risk of valuables getting caught on sensor edges increases
Solution Approach 1:
A guide element is introduced as an intermediary component between the sensor and the valuable document. The guide element has a guide surface that contacts the document and directs it past the sensor, preventing direct contact between the document and sensor edges while maintaining close sensor positioning for accurate measurement
2Reliability
If a guide element extends very close to the transport plane, then transport reliability is improved by preventing document deviation, but the risk of documents becoming entangled on the guide element increases
Solution Approach 1:
The critical parameter is the distance between the guide element's guide surface and the transport plane. By optimizing this distance parameter, the guide element maintains sufficient proximity to effectively guide the document past the sensor, while preserving enough clearance to prevent entanglement and contact problems
3Reliability
If multiple guide elements are positioned close to the transport plane in a sensor section, then transport stability is improved, but the cumulative risk of entanglement and transport problems increases
Solution Approach 1:
When multiple guide elements are used in a sensor section, each guide element's distance from the transport plane is independently optimized. This parameter optimization ensures that while multiple guide elements provide cumulative stabilizing effect, none of them create entanglement bottlenecks, thus resolving the contradiction between stability and entanglement risk
Data Source
Figure 1~2a
Figure 2b~4
Figure 5a~5b
AI summary
A value document processing device has a movable guide element immediately upstream of one of the sensors in the transport direction of the value documents. The exit side of the guide-element surface of the movable guide element ends immediately upstream of the sensor. The movable guide element is fastened to a base element, which is fastened to the value document processing device, in such a way that the distance between the exit side of the guide-element surface of the movable guide element and the transport plane of the value documents can be adjusted. This ensures that the distance between the movable guide element and the transport plane can be individually adapted to the subsequent sensor in each case. To this end, the distance of the exit side of the guide-element surface is adjusted such that the value document that is transported past is guided towards the surface of the subsequent sensor.