Rotary Staple Remover Layout for Stable Removal on Paper Bundles
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Solution Overview
Problem
Existing staple removing devices face challenges such as increased size due to linear reciprocation, limited removal range due to arc-shaped trajectories, instability with varying paper quality, and the need for manual operation or motor-driven pressing during staple removal.
Innovation Solution
A staple removing device with a rotating removal unit that intersects the axial direction, featuring a tip portion, middle portion, and base portion, which stably inserts between the paper bundle and the staple, and includes a paper pressing mechanism that applies uniform force without manual or motor-driven pressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the removal unit reciprocates linearly to remove the staple, then the tip portion can move between first and second positions along the placement table, but the device size increases due to the space required for linear movement
Solution Approach 1:
The removal unit is configured to rotate around a support shaft, creating an arc-shaped trajectory instead of linear movement. This curved path reduces the space required for movement while maintaining the ability to insert the tip portion between the paper bundle and staple for effective removal
2Volume of moving object
If the support shaft is parallel to the placement table to reduce movement space, then the claw moves in an arc trajectory, but the removal range is narrowed when the staple position deviates from the apex of the arc
Solution Approach 1:
The support shaft is positioned vertically (orthogonal to the placement table) rather than parallel to it. This dimensional change allows the removal unit to rotate in a vertical plane, creating a removal path that can accommodate staples at various horizontal positions on the paper bundle, thereby expanding the removal range while maintaining compact horizontal footprint
3Adaptability or versatility
If the rotating shaft is orthogonal to the upper wall to widen the removal range, then the remover body rotates along the upper wall, but the placement surface requires raised portions that cause undulations
Solution Approach 1:
The removal unit is designed with a base portion that is separable from the main housing structure. This allows the removal unit to be extracted and positioned independently, enabling the placement surface to remain flat while the removal unit operates in its own spatial domain with rotational freedom
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A staple removing device includes a placement portion having a placement surface on which a paper bundle bound by a staple is to be placed, a rotating shaft, and a removal unit attached to the rotating shaft and rotating along a surface intersecting an axial direction of the rotating shaft. The removal unit includes a tip portion to be inserted between a lower surface of the paper bundle placed on the placement surface and a crown portion of the staple, a middle portion connected to the tip portion and having an action surface to be in contact with the crown portion, and a base portion connected to the middle portion and the rotating shaft. An upper surface of the base portion is located on the same plane as the placement surface or below the placement surface.