Sheet Processing Device Pushing-Out Member Alignment Control
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Solution Overview
Problem
Conventional sheet processing devices face challenges in maintaining the alignment of sheets on a discharge tray due to oblique movement during feeding, which affects the stacking quality.
Innovation Solution
A sheet processing device with a controller that selects between two positions for a pushing-out member to minimize oblique movement by optimizing the sheet feeding path based on sheet characteristics, such as length and bundle size, to improve alignment on the discharge tray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a feeding roller pair is used to feed sheets, then sheet feeding is achieved, but oblique movement occurs causing poor alignment on the discharge tray
Solution Approach 1:
A pushing-out member is introduced as an intermediary component between the stacking member and discharge tray. This member pushes sheets from the stacking member to the discharge tray in a controlled manner, eliminating the oblique movement caused by direct roller feeding while maintaining efficient sheet transfer.
Solution Approach 2:
The pushing-out member is designed to move dynamically in the pushing-out direction based on sheet characteristics detected by the controller. The member selects between first and second positions to optimize the pushing-out action, adapting to different sheet lengths and bundle sizes to prevent oblique movement while maintaining feeding efficiency.
2Manufacturing precision
If the pushing-out member moves to the second position downstream, then oblique movement is reduced for longer sheets, but processing time increases
Solution Approach 1:
The controller receives feedback information about sheet characteristics (length, bundle size) and uses this to dynamically select the optimal position for the pushing-out member. This feedback mechanism ensures that the pushing-out member chooses the first position for shorter sheets (faster processing) and the second position for longer sheets (better alignment), optimizing both time and precision.
Solution Approach 2:
The system changes the positional parameter of the pushing-out member based on detected sheet characteristics. By adjusting the member's position between two fixed locations according to sheet length and bundle size, the system optimizes the balance between processing speed and alignment precision for different sheet types.
3Productivity
If sheets are fed quickly to maintain productivity, then processing speed increases, but oblique movement increases reducing alignment quality
Solution Approach 1:
The pushing-out member's position is dynamically adjusted based on sheet characteristics. For faster processing of shorter sheets, the member uses the first position, while for longer sheets requiring better alignment, the member moves to the second position. This dynamic adaptation allows the system to maintain high productivity across different sheet types without sacrificing alignment quality.
Solution Approach 2:
The system changes operational parameters (pushing-out member position) based on detected sheet properties. This parameter adjustment allows the system to optimize the balance between feeding speed and alignment precision, ensuring that productivity is maintained while alignment quality is improved through intelligent control.
Data Source
AI summary
A sheet processing device includes a stacking member configured to stack a sheet, a discharging member configured to discharge the sheet stacked on the stacking member, a discharging tray on which the sheet discharged by the discharging member is stacked, a pushing-out member configured to push out the sheet from the stacking member toward the discharging member by being moved in a pushing-out direction, and a controller configured to select, on the basis of information of the sheet stacked on the stacking member, whether to move the pushing-out member to which position of a first position and a second position positioned on a side downstream of the first position with respect to the pushing-out direction.