Movable Guide Unit for High-Stiffness Sheet Conveyance
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Solution Overview
Problem
Conventional sheet conveying apparatuses face challenges in smoothly conveying high-stiffness papers due to increased resistance and bending issues, leading to jamming and unusual sounds during the conveyance process, especially when using curved guide members with small radii of curvature.
Innovation Solution
A sheet conveying apparatus with a first and second conveying unit, where the second unit is a nip conveying unit with a belt conveying unit that guides the sheet, maintaining contact with the tip to reduce resistance and prevent jamming, and includes a belt conveying unit with a conveyor belt that enters at an acute angle to ensure stable conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If curved guide members with small radii of curvature are used to reduce the occupied space of the conveying path, then the apparatus can be downsized, but high-stiffness papers experience increased resistance and bending issues leading to jamming
Solution Approach 1:
The guide member is made movable in the apparatus width direction, allowing it to dynamically adjust its position. This enables the guide member to adapt to different paper stiffness levels, providing smoother guidance for high-stiffness papers while maintaining compact design for standard papers, thus resolving the contradiction between apparatus size and conveyance reliability
Solution Approach 2:
The guide member's position parameter is made variable rather than fixed. By changing the guide member's position in the apparatus width direction based on paper characteristics, the system can optimize the conveying path for different paper types, reducing resistance and jamming for high-stiffness papers while maintaining compact dimensions
2Device complexity
If the tip of the sheet is guided by a fixed guide member, then the conveying path is simple, but the rear end of the sheet collides with the guide member causing unusual sounds
Solution Approach 1:
The guide member is transformed from a fixed structure to a movable one that can shift in the apparatus width direction. This dynamic capability allows the guide member to follow the sheet's movement more smoothly, preventing sudden collisions at the rear end while maintaining a relatively simple conveying path structure
Solution Approach 2:
The movable guide member provides beforehand cushioning by being able to yield and adjust its position as the sheet passes through. This prevents the harsh collision that would occur with a fixed guide member, reducing unusual sounds while keeping the conveying path structure simple
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 reduces resistance and prevents jamming, allowing for stable conveyance of high-stiffness papers while minimizing unusual sounds, enhancing the supportability for various paper types and maintaining a compact apparatus design.
Implementation Method 1
a belt conveying unit including a conveyor belt that conveys the sheet
Implementation Method 2
a second conveying unit that conveys the sheet conveyed by the first conveying unit in a direction different from a sheet conveying direction of the first conveying unit
Data Source
AI summary
A first conveying unit conveys a sheet. A second conveying unit conveys the sheet conveyed by the first conveying unit in a direction different from a sheet conveying direction of the first conveying unit, and is disposed on a downstream side in the sheet conveying direction of the first conveying unit. A guiding unit reduces a sheet conveying load. The guiding unit is disposed in an outer area of a sheet conveying path formed between the first conveying unit and the second conveying unit.