Sheet Stacking Apparatus Extension Tray Attachment Mechanism
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Solution Overview
Problem
Existing sheet stacking apparatuses face challenges in securely attaching and detaching extension trays for long sheets, leading to potential tray instability and reduced operability, as they often either come off unexpectedly or are difficult to attach and detach.
Innovation Solution
A sheet stacking apparatus with a first, second, and third stacking portion, where the second portion is movable between restrictive and non-restrictive positions, allowing easy attachment and detachment of the third portion (extension tray) while preventing it from disengaging unexpectedly, using a restricting portion to secure the extension tray when in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the extension tray is configured to be easily attached or detached, then the operability is improved, but the tray may unexpectedly come off
Solution Approach 1:
The restricting portion is designed to be movable between a restricting state (when the second stacking portion is at the first position) and a non-restricting state (when the second stacking portion is at the second position). This dynamic configuration allows the system to adapt its behavior based on the position of the second stacking portion, enabling easy attachment/detachment when needed while preventing unexpected disengagement during normal operation.
2Reliability
If the extension tray is configured not to unexpectedly come off, then the reliability is improved, but the operability of attaching and detaching becomes low
Solution Approach 1:
The restricting portion's behavior changes dynamically based on the position of the second stacking portion. When the second stacking portion is at the first position, the restricting portion actively prevents disengagement. When the second stacking portion moves to the second position, the restricting portion becomes inactive, allowing easy attachment and detachment of the extension tray.
3Reliability
If a tray with length of 30 inches is used to stack long sheets, then the sheet falling problem is solved, but the user area is wastefully occupied
Solution Approach 1:
The stacking system is divided into a main stacking tray and a detachable extension tray. The extension tray can be attached when long sheets (30 inches) need to be stacked to prevent sheet falling, and detached when not needed to free up user area. This segmentation allows the system to have the capability of a long tray without permanently occupying space.
Solution Approach 2:
The extension tray is designed to be detachably attachable, allowing it to be present in the system only when needed for stacking long sheets. This dynamic configuration enables the system to adapt its physical footprint based on the current stacking requirements, avoiding wasteful occupation of user area when the extension tray is not in use.
Data Source
AI summary
Disclosed is a sheet stacking apparatus which includes a first stacking portion on which a sheet is stacked, a second stacking portion which is movable with respect to the first stacking portion, a third stacking portion which is detachably attachable to the first stacking portion or the second stacking portion and a restricting portion which restricts disengagement of the third stacking portion which has been attached. The second stacking portion is movable such that the second stacking portion is located at a first position where the restricting portion does not restrict disengagement of the third stacking portion and a second position where the restricting portion restricts disengagement of the third stacking portion which has been attached.