Sheet Storage Plate Lift Layout for Top Sheet Positioning
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Solution Overview
Problem
Conventional sheet storage devices face challenges in maintaining the position of the top sheet on a movable setting plate, which affects the feeding mechanism's efficiency and accuracy in image forming systems.
Innovation Solution
A sheet storage device with a setting plate that reciprocates up and down, utilizing a pair of plate-like frames, winding drums, and relay pulleys, along with wires linked to these components, to maintain the position of the top sheet through a coordinated winding and unwinding mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional setting plate with simple wire support is used, then the device complexity is low, but the position maintenance precision of the top sheet deteriorates
Solution Approach 1:
The patent divides the wire support system into multiple independent components: winding drums for vertical movement control, relay pulleys for wire routing, and a setting plate for sheet support. This segmentation allows each component to perform its specific function precisely, improving overall position maintenance precision while keeping the system manageable in complexity
Solution Approach 2:
The relay pulleys act as intermediary elements between the winding drums and the setting plate. These pulleys guide and redirect the wires in a controlled manner, enabling precise wire routing and tension management that contributes to accurate position maintenance without requiring direct complex mechanical linkages
2Manufacturing precision
If the setting plate is moved upward to maintain top sheet position, then the position maintenance precision improves, but the speed of sheet feeding deteriorates
Solution Approach 1:
The system employs periodic upward movement of the setting plate to maintain the top sheet position, rather than continuous movement. The setting plate is raised in controlled intervals to the required height, held there briefly to ensure position maintenance, then lowered to allow sheet feeding. This periodic action pattern enables precise position control while minimizing time loss and maintaining acceptable feeding speed
Solution Approach 2:
The setting plate is pre-positioned upward before sheet feeding begins, ensuring that the top sheet is already at the correct height and position. This preliminary positioning action eliminates the need for continuous adjustment during feeding, thereby maintaining precision without significantly impacting the overall feeding speed
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 ensures consistent and efficient feeding of sheets to the image forming apparatus by maintaining the position of the top sheet, enhancing the feeding mechanism's reliability and accuracy.
Implementation Method 1
When being rotated in one direction, the winding drums wind the wire so as to move the setting plate upward
Implementation Method 2
The plurality of relay pulleys are disposed outward in the first direction of each of the pair of plate-like frames, in a rotatable manner about an axis extending in the first direction, and the wire wraps around the relay pulleys
Data Source
AI summary
A predetermined frame includes a main frame part and a drum arrangement part. Winding drums are disposed in a drum arrangement part. Relay pulleys includes a first relay pulley disposed in the drum arrangement part, for a first wire to wrap around, a second relay pulley disposed on the same axis as the first relay pulley, outward of the first relay pulley, for a second wire to wrap around, and a third relay pulley disposed in the main frame part, for the second wire to wrap around. The drum arrangement part is positioned inward of the main frame part.