Rotatable Passing-Over Unit for Sheet Conveying Maintenance
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Solution Overview
Problem
Existing image forming apparatuses face challenges in maintaining high productivity and preventing paper jams, especially at joints between units and areas with gaps between modules, which complicates maintenance due to poor maintainability and the need for frequent disconnection of modules.
Innovation Solution
A sheet conveying apparatus with a passing-over unit that includes a rotation central shaft and a rotatable conveying guide, allowing the guide to switch between positions to avoid overlapping with the conveying unit during maintenance, and a stopper member to restrict movement when necessary, enabling easier module pull-out and maintenance without disrupting the conveying path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the guide member overlaps with the conveyance path to guide the sheet smoothly, then sheet conveying reliability is improved, but the conveying unit can only be pulled out in the direction along the sheet conveying direction, resulting in poor maintainability
Solution Approach 1:
The passing-over unit is configured to be rotatable around a rotation central shaft, allowing it to dynamically change its position between overlapping with the conveying guide (for reliable sheet conveying) and not overlapping (for easy maintenance by pulling the conveying unit in the pulling-out direction perpendicular to the conveying direction)
Solution Approach 2:
The passing-over unit can be rotated to different positions around the rotation central shaft, utilizing rotational movement to switch between the sheet conveying state (overlapping position) and the maintenance state (non-overlapping position), thereby resolving the contradiction between reliability and maintainability
2Reliability
If the guide member is provided at the joint to prevent bending and buckling, then sheet conveying reliability is improved, but the unit structure becomes complex and maintenance time increases
Solution Approach 1:
The rotatable passing-over unit allows the system to dynamically switch between providing guide support (when rotated to overlapping position for reliable conveying) and facilitating easy access for maintenance (when rotated to non-overlapping position, reducing maintenance time)
Solution Approach 2:
The passing-over unit is designed as a separate, rotatable component that can be independently positioned, allowing the guiding function to be segmented from the main conveying unit structure, thereby simplifying maintenance operations
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 configuration enhances maintainability by allowing modules to be pulled out perpendicular to the conveying direction without disrupting the conveying path, reducing maintenance time and preventing damage, thus improving overall productivity and jam prevention.
Implementation Method 1
the passing-over unit including a rotation central shaft and a conveying guide configured to guide the sheet and to be rotatable around the rotation central shaft
Implementation Method 2
a stopper member is provided, which is configured to restrict a movement of the conveying unit in the pulling-out direction when the passing-over unit is in the first position
Data Source
AI summary
Disclosed is a sheet conveying apparatus to which a sheet conveying module is separably connected. The sheet conveying module is provided with a conveying unit including a conveying guide. The conveying unit can be pulled out in a direction perpendicular to a sheet conveying direction. The sheet conveying apparatus has a passing-over unit for passing the sheet over between the sheet conveying module and the sheet conveying apparatus. The passing-over unit includes a stopper member. The stopper member restricts a movement of the conveying unit in the pulling-out direction when the passing-over unit is in a first position. The restriction of the stopper member is released when the passing-over unit is in the second position.