Pivotal Stopper Mechanism for Roller Gap Consistency
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Solution Overview
Problem
Existing sheet feeding apparatuses in document processing equipment often suffer from paper jams due to improper alignment and movement of rollers, which can lead to increased gaps between rollers and stoppers, causing media sheets to get misaligned or stuck, resulting in inefficiencies and mechanical damage.
Innovation Solution
A feeding apparatus with a first feeding assembly that includes a pivotally connected stopper and a roller system where the stopper moves with the roller along a straight path, maintaining a consistent gap size to prevent paper jams by ensuring the covering portion of the stopper remains close to the roller path, even during installation or external forces, and utilizing pressure components to maintain contact and friction for smooth media sheet transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stopper is fixed rigidly to the mount frame, then the structure is simple and stable, but the gap between the stopper and roller increases during roller movement causing paper jams
Solution Approach 1:
The stopper is changed from a fixed rigid structure to a dynamic pivotally connected structure that can move with the roller. The pivotal connection allows the stopper to adjust its position automatically as the roller moves along the straight path, maintaining a consistent gap size and preventing paper jams while keeping the mechanism relatively simple.
2Manufacturing precision
If the roller moves along a curved path, then the feeding mechanism is more flexible, but the alignment precision decreases causing media sheets to get misaligned
Solution Approach 1:
The feeding mechanism is divided into separate functional components: the roller that moves along a constrained straight path for precise alignment, and the stopper that is pivotally connected to adapt to the media stack. This segmentation allows the roller to maintain high alignment precision while the overall system retains flexibility through the stopper's rotational degree of freedom.
3Strength
If the gap between stopper and roller is increased to accommodate external forces, then the mechanism is more robust, but media sheets can enter the gap causing paper jams
Solution Approach 1:
Rather than increasing the gap to accommodate external forces, the stopper is designed to dynamically respond to forces through its pivotal connection. This allows the stopper to maintain optimal positioning and minimize the gap while still being robust enough to handle external forces during media sheet feeding operations.
4Reliability
If the stopper is made to move with the roller, then the gap consistency is maintained preventing paper jams, but the device complexity increases
Solution Approach 1:
The stopper is pivotally connected to the mount frame, creating a simple dynamic linkage that allows the stopper to move with the roller automatically. This pivotal connection provides the necessary motion coupling without requiring complex mechanisms, maintaining gap consistency while minimizing device complexity.
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 solution effectively prevents paper jams by maintaining a consistent gap size between the stopper and roller, ensuring smooth media sheet transport and extending the lifespan of the rollers by reducing mechanical stress and misalignment issues.
Implementation Method 1
utilizing pressure components to maintain contact and friction for smooth media sheet transport
Data Source
AI summary
The disclosure relates to a feeding apparatus capable of feeding media sheet. The feeding apparatus includes first feeding assembly comprising first mount frame, first roller and stopper. The stopper is pivotally connected to the first mount frame and movable with the first roller, the stopper has a covering portion configured to stop the media sheet, the first roller is located in the first mount frame and is movable along a straight path; while the stopper is pressing against the first roller and the first roller is moving along the straight path, the stopper is moved with the first roller so that the covering portion of the stopper is moved close to or away from the straight path.