Paper Transfer Device Nip Release Mechanism
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Solution Overview
Problem
Existing paper transfer devices face difficulties in easily and surely removing jammed papers that extend from the device to neighboring devices without increasing the device's size along the paper transfer direction.
Innovation Solution
A paper transfer device design featuring a first paper guide plate with transfer rollers for guiding one face of the paper, a second paper guide plate that can be drawn out perpendicular to the paper transfer direction with driven rollers, and a draw-out guide member that releases the nip between the transfer and driven rollers when the first guide plate is drawn out, allowing for easy removal of jammed papers without the need for additional relay members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If relay members are added to enable removal of jammed papers extending to neighboring devices, then the removal capability is improved, but the device size along the paper transfer direction increases
Solution Approach 1:
The paper transfer device is divided into an upstream paper transfer device and a downstream paper transfer device. The downstream device includes a first paper guide plate and a second paper guide plate that can be separated from each other. This segmentation allows the downstream device to release its grip on jammed papers without requiring additional relay members, thus avoiding an increase in device size along the paper transfer direction.
Solution Approach 2:
The second paper guide plate is designed to be movable relative to the first paper guide plate. When jammed papers need to be removed, the second paper guide plate can be separated from the first paper guide plate, dynamically changing the device configuration to release the nip and enable easy paper removal without extending the device length.
2Device complexity
If the device structure is simplified to reduce size, then manufacturing cost is reduced, but the ability to remove jammed papers extending to neighboring devices is worsened
Solution Approach 1:
By segmenting the paper transfer function into upstream and downstream devices, the downstream device can independently release its grip on jammed papers through separation of the first and second paper guide plates. This segmentation achieves complete jammed paper removal capability without adding complex relay member systems.
Solution Approach 2:
Instead of extending the device along the paper transfer direction (one dimension) to add relay members, the invention uses separation in the width direction between the first and second paper guide plates. This dimensional change allows jammed paper removal capability without increasing device length.
Data Source
AI summary
A paper transfer includes a first paper guide plate, a second paper guide plate, and a draw-out guide member. The first paper guide plate has a transfer roller for transferring a paper while guiding one face of the paper. The second paper guide plate that can be drawn out while facing to the first paper guide plate, and has a driven roller driven while pressing the transfer roller with the paper interposed therebetween to guide another face of the paper. The draw-out guide member is formed so as to release a nip between the transfer roller and the driven roller by separating the driven roller from the transfer roller when the first paper guide plate is drawn out in an engaged state where the draw-out member is engaged with an engagement portion provided on the second paper guide plate.