Scanner Feeding Mechanism with Dynamic Pressing Component
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Solution Overview
Problem
Existing feeding mechanisms in scanners and printers face issues with jamming when handling multiple flexible scanning materials, particularly due to the varying thickness of paper sheets, which can lead to incomplete scanning and mechanical jams.
Innovation Solution
A feeding mechanism incorporating a base body, a feeding roller assembly, and a linkage assembly with a guiding and pressing component that adjusts its position relative to the feeding channel to accommodate different thicknesses of materials, using guiding and pressing components to prevent jamming by curling up excess materials and maintaining contact with the rollers to guide them out of the scanning path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed feeding mechanism is used, then the structure is simple, but it causes jamming when handling materials of varying thickness
Solution Approach 1:
The pressing component is made movable rather than fixed, allowing it to adjust its position dynamically. The component can move between a first position for thick materials and a second position for thin materials, enabling the feeding mechanism to adapt to varying material thickness while maintaining operational effectiveness.
2Reliability
If the pressing component is always in contact with the feeding roller, then thin materials are guided properly, but thick materials cannot be fed smoothly
Solution Approach 1:
The pressing component's position is dynamically adjusted based on material thickness. For thin materials, the component is positioned to contact the feeding roller, ensuring proper guidance and complete scanning. For thick materials, the component is repositioned to avoid contact, allowing smooth feeding without interference.
3Reliability
If the pressing component is repositionable, then materials of varying thickness are handled properly, but the mechanism becomes more complex
Solution Approach 1:
A linkage assembly acts as an intermediary mechanism between the pressing component and the feeding channel. This linkage system enables the pressing component to move between positions in response to material thickness variations, providing automatic adaptation while maintaining a relatively simple overall structure through mechanical leverage.
Data Source
AI summary
A feeding mechanism comprises a base body, a feeding roller and a linkage assembly. The base body has a feeding channel. The feeding roller is disposed on the base body, and a part of the feeding roller is located in the feeding channel. The linkage assembly comprises a guiding component and a pressing component. The guiding component is pivotally coupled to the base body. Two ends of the pressing component are respectively and slidably disposed on the base body and the guiding component. The guiding component is rotatable relative to the base body so as to drive the pressing component to move along an extension direction of the feeding channel relative to the guiding component.