Paper-sheet Post-processing Device with Unified Rotation Shaft
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Solution Overview
Problem
Conventional paper-sheet post-processing devices for staple processing are larger and more costly due to separate driving units for holding and aligning mechanisms, and have complex configurations for aligning sheets.
Innovation Solution
A paper-sheet post-processing device with a unified driving unit that uses a cam mechanism and aligning mechanism integrated into a main unit with a rotation shaft, allowing the paper-sheet holding part and aligning member to be operated by rotating the shaft, simplifying the configuration and reducing size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate driving units are used for the changeover claw and hit roller part, then the sheet holding and aligning functions are achieved, but the device size increases and cost increases
Solution Approach 1:
The patent combines the changeover claw and hit roller part into a single integrated sheet holding and aligning mechanism. The changeover claw serves dual functions: holding sheets during conveyance and acting as a hit roller for alignment. This merging eliminates the need for separate driving units, reducing device size and cost while maintaining operational effectiveness.
2Ease of operation
If a solenoid or lever is used to move the compile paddle, then the sheet aligning function is achieved, but the configuration becomes complicated
Solution Approach 1:
The patent extracts the complex solenoid and lever mechanisms from the sheet aligning system and replaces them with a simplified gravity-based compile paddle design. The compile paddle is passively positioned and moved only when necessary, eliminating complicated actuating mechanisms while maintaining the sheet aligning function.
3Adaptability or versatility
If multiple separate mechanisms are used for sheet processing, then comprehensive sheet handling is achieved, but the device structure becomes complex and costly
Solution Approach 1:
The patent designs the changeover claw to perform multiple functions: it holds sheets during conveyance, releases sheets onto the compile tray, and acts as a hit roller for alignment. This multi-functional design reduces the number of separate mechanisms needed, simplifying the overall device structure while maintaining comprehensive sheet handling capability.
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
Enables efficient alignment and binding of sheets using a single driving unit, reducing the device's size and complexity while maintaining effective staple processing capabilities.
Implementation Method 1
The cam mechanism, which includes a cam member rotatably arranged on the main unit, is configured to place the paper-sheet holding part close to and at a distance from the paper-sheet supporting unit by rotation of the cam member.
Implementation Method 2
The aligning mechanism, which includes an aligning member rotatably arranged on the main unit, is configured to align the sheet of paper supported by the paper-sheet supporting unit with the standard position by rotation of the aligning member.
Data Source
AI summary
In a paper-sheet post-processing device, a paper-sheet aligning unit has: a main unit; a paper-sheet holding part which holds paper-sheets supported on a paper-sheet supporting unit; a cam mechanism which places the paper-sheet pressing part close to and separate from the paper-sheet supporting unit; and an aligning mechanism which aligns the paper-sheets supported on the paper-sheet supporting unit with a standard position by rotation of the aligning member; and the main unit has a rotation shaft rotatably supported axially by a first support part and a second support part and the cam member and aligning member are arranged to be fixed to the rotation shaft.