Sheet Processing Apparatus Stacker Alignment Roller
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Solution Overview
Problem
Existing sheet processing apparatuses face challenges in stably retracting a bundle of sheets from a stapler after a staple process, especially when the number of sheets is large or transport resistance is high due to static electricity, leading to incomplete or failed bundle transport.
Innovation Solution
The apparatus includes an information acquisition unit to gather data on the bundle and environment, a folding position adjustment unit to adjust the folding blade's contact point, a stacker that moves parallel to the sheet surface, an alignment roller for precise alignment, and a control unit to manage the transport speed of rollers, ensuring stable sheet transport and folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the bundle of sheets is moved using its own weight after stapling, then the structure is simple, but the transport reliability deteriorates when the number of sheets is large or transport resistance is high
Solution Approach 1:
A transport roller is introduced as an intermediary component to assist in moving the bundle of sheets from the stapler to the folding position. The roller provides additional mechanical force to overcome transport resistance and ensure reliable bundle movement, especially when the bundle weight is insufficient due to a small number of sheets or high friction conditions.
2Weight of moving object
If the number of sheets in the bundle is large, then the bundle weight increases providing natural movement force, but the transport resistance also increases making movement difficult
Solution Approach 1:
The transport roller acts as a mediator that supplements the natural movement force provided by bundle weight. When the bundle is heavy but transport resistance is also high, the roller provides additional mechanical assistance to ensure the bundle reaches the folding position reliably.
3Device complexity
If the folding blade position is fixed, then the device structure is simple, but the folding precision deteriorates when sheet conditions vary
Solution Approach 1:
The folding blade position is made adjustable rather than fixed. The position adjustment mechanism allows the folding blade to be positioned precisely according to the actual sheet conditions, ensuring accurate folding even when sheet size, thickness, or type varies. This dynamic adjustment capability maintains folding precision across different operating conditions.
Data Source
AI summary
There is provided a technique in which a retracting operation of a bundle of sheets from a stapler after a staple process can be stably performed irrespective of the number of sheets constituting the bundle of sheets or the transport resistance. When the bundle of sheets subjected to the staple process is moved by a stacker in a direction of retracting from the stapler, an alignment roller is caused to come in contact with the bundle of sheets held by the stacker and to assist the movement of the bundle of sheet.