Sheet Conveying Device Guide System for Jam Prevention
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Solution Overview
Problem
Existing sheet conveying devices face challenges in preventing sheet lifting and jamming during the separation of sheets in a bundle, which can lead to conveyance failures and paper jams.
Innovation Solution
A sheet conveying device incorporating a sheet container, an air blower, and a guide system where the air blower separates sheets by blowing air and the guide contacts the sheet surface over a specific region to guide it, with movable guide ends supporting both ends to prevent lifting and ensure accurate conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air is blown to separate sheets from the bundle, then sheet separation is achieved, but sheet lifting occurs at the upstream region
Solution Approach 1:
The guide is divided into multiple sections: a first guide in the upstream region and a second guide in the downstream region. The first guide prevents sheet lifting during separation, while the second guide maintains sheet position during conveyance, allowing each segment to address specific stability issues at different locations
Solution Approach 2:
The guide acts as an intermediary component between the air blower and the sheet. It mediates the interaction by providing physical support to the sheet during the air blowing process, preventing direct lifting while allowing the separation function to continue
2Speed
If air blowing is used for sheet separation, then conveyance speed is improved, but paper jam occurs due to conveyance failure
Solution Approach 1:
The first guide performs preliminary action by preventing sheet lifting before the conveyance process begins. By stabilizing the sheet in the upstream region during air blowing, it ensures that the sheet is ready for reliable conveyance without causing jams downstream
Solution Approach 2:
The guide system serves as an intermediary that ensures reliable conveyance by maintaining sheet stability throughout the conveyance path, preventing the sheet from deviating or lifting during high-speed movement
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 sheet lifting and jamming by guiding the sheet from the upstream to the downstream region in the conveyance direction, enhancing conveyance accuracy and stability, and preventing paper jams.
Implementation Method 1
The air blower is configured to blow air to the plurality of sheets to separate a single sheet from subsequent sheets of the plurality of sheets
Implementation Method 2
The guide is configured to contact a surface of the single sheet separated from the subsequent sheets over a given region downstream from any position of an upstream region in a sheet conveyance direction to guide the single sheet
Data Source
AI summary
A sheet conveying device includes a sheet container, an air blower, and a guide. The sheet container is configured to store a plurality of sheets. The air blower is configured to blow air to the plurality of sheets to separate a single sheet from subsequent sheets of the plurality of sheets. The guide is configured to contact a surface of the single sheet separated from the subsequent sheets of the plurality of sheets over a given region downstream from any position of an upstream region in a sheet conveyance direction to guide the single sheet. The upstream region is from an upstream end to a center of the single sheet in the sheet conveyance direction.