Robotic Document Feeder With Bernoulli Cup
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Solution Overview
Problem
Manual feeding of fingerprint cards to scanners is a tedious and expensive process, necessitating an automated solution that increases document imaging capacity and reduces human operator involvement.
Innovation Solution
A robotic document feeder system utilizing a Bernoulli cup assembly powered by a vacuum source, coupled with a robotic arm, to lift, transport, and align documents over a scanner, enabling automated imaging and reducing the need for manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual feeding is used, then document imaging can be completed, but the process is tedious, expensive, and requires significant human operator involvement
Solution Approach 1:
The system enables self-service automation where the robotic arm independently picks up documents from the input bin, transports them to the scanner, positions them for imaging, and places them in the output bin without human intervention. The vacuum cup assembly automatically grasps and releases documents, and the alignment mechanism self-adjusts to ensure proper positioning, creating a fully autonomous document imaging system
Solution Approach 2:
The patent replaces the manual mechanical feeding process with an automated robotic system. The robotic arm with vacuum cup assembly substitutes human hands for document handling, the linear actuator replaces manual positioning movements, and the automated alignment mechanism substitutes human visual inspection and adjustment, thereby eliminating the need for tedious manual operator involvement while maintaining document imaging functionality
2Extent of automation
If automated robotic feeding is implemented, then human operator involvement is reduced, but system complexity increases
Solution Approach 1:
The automated system is divided into distinct functional modules: the robotic arm assembly for document transport, the vacuum cup assembly for grasping, the linear actuator for positioning, the alignment mechanism for orientation, and the input/output bins for document storage. Each module operates independently with its own control system, allowing for easier troubleshooting, maintenance, and replacement of individual components without affecting the entire system
Solution Approach 2:
The robotic arm assembly serves multiple functions: picking up documents from the input bin, transporting them to the scanner, positioning them for imaging, and placing them in the output bin. The vacuum cup assembly can grasp documents of various sizes and weights. The alignment mechanism automatically adjusts for different document orientations. This multi-functionality reduces the number of separate components needed, thereby managing system complexity while maintaining high automation
3Reliability
If vacuum pressure is increased to improve document lifting, then document transport reliability improves, but risk of document damage increases
Solution Approach 1:
The vacuum pressure applied by the cup assembly is dynamically adjusted based on the document being handled. The system uses sensors to detect document properties such as weight, size, and material composition, then automatically modulates the vacuum pressure to the minimum level required for secure grasping and transport. This dynamic adjustment ensures reliable document handling while preventing excessive pressure that could cause bending, creasing, or tearing of delicate documents
Solution Approach 2:
The system incorporates feedback mechanisms including force sensors and vision systems that monitor the document grasping and transport process in real-time. When the document is successfully grasped, the system receives confirmation feedback and maintains the vacuum pressure. During transport, if any abnormality is detected such as document slipping or deformation, the feedback system immediately adjusts the vacuum pressure or triggers an emergency release to prevent document damage, thereby ensuring both transport reliability and document safety
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 system efficiently scans documents with minimal human intervention, reducing processing time and error, while minimizing paper jams and potential document damage, achieving consistent image quality within a +/-0.5% tolerance.
Implementation Method 1
a Bernoulli cup assembly powered by a vacuum source and coupled to the robotic arm, wherein the Bernoulli cup assembly creates sufficient suction pressure to lift and transport a document
Data Source
AI summary
A robotic document feeder system may comprise a robotic arm coupled to a Bernoulli cup assembly powered by a vacuum source; a base disposed over an imaging surface of a document scanner, wherein the base comprises a designated scan area through which a document may be imaged by the document scanner; an input bin for storing at least one document to be imaged by the document scanner; and an output bin for storing the at least one document after it has been imaged by the document scanner. The system may further comprise an alignment mechanism in proximity to the designated scan area and configured to align the document substantially over the imaging surface of the document scanner; at least one automated door configured to close the designated scan area after the document has been placed in the designated scan area; and a camera positioned above the designated scan area for imaging a second side of the document.