Sheet Conveying Device with Dynamic Table Positioning
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Solution Overview
Problem
Existing sheet conveying devices have a fixed raising amount for the sheet placement table, making it difficult to reach small sheets placed between the placement and discharge tables, and can result in unnecessary raising when dealing with larger sheets, leading to inefficiencies in sheet removal.
Innovation Solution
A sheet conveying device with a raising/lowering control mechanism that adjusts the position of the sheet placement table based on the size of the sheet on the discharge table, ensuring an optimal gap for easy removal, determined by a ranging sensor and controlled by a raising/lowering control portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the sheet placement table is raised by a fixed amount, then visibility of sheets is improved, but small sheets become unreachable and unnecessary raising occurs for large sheets
Solution Approach 1:
The patent applies dynamics by making the raising amount of the sheet placement table variable rather than fixed. The raising/lowering control portion dynamically adjusts the raising amount based on the sheet size detected by the detection means, allowing the system to adapt its behavior to different sheet dimensions and achieve both visibility improvement and accessibility maintenance
Solution Approach 2:
The patent changes the parameter of raising amount from a constant value to a variable value that depends on sheet size. The raising/lowering control portion modifies the raising parameter based on detection results, enabling optimal balance between visibility enhancement and sheet accessibility for different sheet sizes
2Illumination intensity
If the sheet placement table is raised to improve visibility, then sheet visibility is enhanced, but time is wasted on unnecessary raising for large sheets
Solution Approach 1:
The patent applies preliminary action by detecting the sheet size before executing the raising operation. The detection means identifies whether a small or large sheet is present, and the raising/lowering control portion pre-determines the appropriate raising amount based on this detection, preventing unnecessary raising operations and saving time
Solution Approach 2:
The patent implements feedback by using the detection means to provide information about sheet size to the raising/lowering control portion. This feedback loop allows the system to adjust the raising operation according to actual sheet conditions, avoiding wasted time on unnecessary raising for large sheets while ensuring proper visibility for small sheets
Data Source
AI summary
A sheet conveying device includes a sheet placement table, a sheet discharge table, a conveyance mechanism, raising/lowering mechanism, and a raising/lowering control portion. The sheet discharge table is located below the sheet placement table. The conveyance mechanism conveys a sheet placed on the sheet placement table onto the sheet discharge table via an execution position at which image processing is executed by an image processing portion. The raising/lowering mechanism raises and lowers the sheet placement table. The raising/lowering control portion controls the raising/lowering mechanism to raise and lower the sheet placement table to a target position that is determined in accordance with a size of the sheet on the sheet discharge table.