Scanning Device Separation Module Torsion Adjustment
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Solution Overview
Problem
Conventional scanning devices are unable to adjust torsion values effectively when scanning papers of different thicknesses, leading to paper jams or damage due to insufficient or excessive torsion, resulting in poor image quality.
Innovation Solution
The scanning device features a detachable and interchangeable separation module with different torsion limiters, allowing for adjustable torsion values by changing the separation modules, which are assembled in an upward recessed groove on the upper cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the torsion limiter is fastened to the upper cover in a conventional scanning device, then the structure is simple and easy to manufacture, but the torsion value cannot be adjusted when scanning papers of different thicknesses
Solution Approach 1:
The separation module is divided into separable components: the torsion limiter, separation roller assembly, and sealing cover can be detached from the upper cover as a unit. This segmentation allows the torsion limiter to be replaced with different specifications while keeping the rest of the structure intact, thus achieving torsion value adjustability without completely redesigning the entire device.
Solution Approach 2:
The separation module is designed as a universal assembly that can accommodate different torsion limiters for scanning papers of various thicknesses. The module includes a sealing cover with a limiting hole that can adapt to different torsion limiter dimensions, making the same module structure applicable across multiple scanning scenarios with different paper types.
2Reliability
If the torsion value is increased for thicker paper, then paper jams are prevented, but thinner paper becomes damaged due to excessive torsion
Solution Approach 1:
Different torsion limiters with varying torsion values are provided to match different paper thicknesses. By changing the torsion limiter parameter according to the paper type being scanned, the system optimizes the torsion force applied - using lower torsion values for thin paper to prevent damage and higher values for thick paper to prevent jams, thus achieving reliable scanning across different paper types.
3Ease of repair
If the separation roller is replaced individually, then the separation function is maintained, but the torsion limiter cannot be replaced as it is fastened to the upper cover
Solution Approach 1:
The separation module is segmented into a replaceable unit that includes both the separation roller and torsion limiter. This allows both components to be replaced together as a single assembly, making the torsion limiter replaceable without requiring complex disassembly of the upper cover, thus improving both ease of repair and adaptability.
Solution Approach 2:
The torsion limiter and separation roller assembly are merged into a single replaceable separation module that can be installed and removed as one unit. This combination allows the torsion limiter to be replaced along with the separation roller, simplifying the replacement process and enabling adaptability for different paper types without complicating the repair procedure.
Data Source
AI summary
A scanning device includes an upper cover, and a separation module detachably and changeably assembled in the upper cover. A middle of a bottom surface of the upper cover is recessed in an upward direction to form an assembling groove. The separation module includes a fastening holder, a separation roller assembly received in the fastening holder, a torsion limiter and a sealing cover. The torsion limiter is engaged with the separation holder. The sealing cover is mounted under the fastening holder. Different separation modules detachably and changeably assembled in the assembling groove are capable of being equipped with different torsion limiters. When the scanning device scans papers of which grams are different, torsion values of the scanning device are capable of being adjusted by virtue of changing the different separation modules equipped with the different torsion limiters.