Sheet Conveyer Roller Holder Guide Member Design
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Solution Overview
Problem
Existing sheet conveyers face issues with frequent separation of paired rollers, leading to premature wear of urging members and increased complexity in design, while manual separation can be cumbersome and inefficient.
Innovation Solution
A sheet conveyer design where the roller holder is pivotable between contact and separation positions, with a guide member restricting excessive movement and an urging member to minimize roller separation frequency, reducing wear and maintaining a simpler structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the guide member moves from the closed position to the open position, then the conveyer path is exposed for jam removal, but the paired rollers are always separated which causes frequent wear on the urging member
Solution Approach 1:
The roller holder is designed to be movable between a first position (rollers in contact) and a second position (rollers separated), allowing the system to dynamically adjust the roller contact state based on operational needs rather than maintaining a fixed state
Solution Approach 2:
The guide member's position provides feedback control for the roller holder - when the guide member is in the closed position, the roller holder is urged to return to the first position by the urging member, ensuring rollers remain in contact during normal operation and only separate when necessary for jam removal
2Length of moving object
If the shaft of the roller is extended to reach the frame through an aperture, then the roller movable amount is restricted, but the structure becomes more complicated and requires larger space
Solution Approach 1:
Instead of restricting roller movement through a linear aperture in the frame, the guide member is positioned at a location on the side opposite to the first roller across the second roller, using a different spatial dimension to achieve the same movement restriction function
Solution Approach 2:
The guide member serves multiple functions: it guides the sheet in the conveyer path, restricts the movable amount of the second roller, and enables the roller holder to move to the second position when pivoted to the open position
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
This design minimizes the frequency of roller separation, reduces wear on urging members, and facilitates easy jam removal without complicating the structure or requiring user manual intervention.
Implementation Method 1
an urging member configured to urge the roller holder toward the first position
Implementation Method 2
The roller holder located at the second position is restricted by the guide member from moving farther from the first position
Data Source
AI summary
A sheet conveyer, including a body with a conveyer path, a first roller, a second roller, a roller holder supporting the second roller rotatably, an urging member urging the roller holder, and a guide member, is provided. The guide member is supported rotatably by the body at a position on a side opposite to the first roller across the second roller is pivotable between a closed position and an open position. The roller holder is movable between a first position, where the second roller contacts the first roller, and a second position, where the second roller is separated from the first roller and in which the roller holder contacts the guide member located at the open position. The roller holder located at the second position is restricted by the guide member from moving farther from the first position. The urging member urges the roller holder toward the first position.