Staple Removal Device Wedge Insertion and Abutment Mechanism
Solution Overview
Problem
Existing staple removal devices face challenges in reliably removing staples from paper bundles without damaging the paper, as the required pressing force varies with the thickness of the paper bundle and the type of staple binding, leading to issues with staple removal failure or paper damage.
Innovation Solution
A staple removal device with a movable wedge-shaped tip end portion that inserts between the staple and the paper bundle, accompanied by an abutment portion to restrict movement and prevent damage, allowing for adjustable positioning to accommodate different paper and staple types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressing force is increased to prevent staple and paper bundle movement during insertion, then staple removal reliability is improved, but paper damage risk increases
Solution Approach 1:
The patent introduces an abutment portion as an intermediary component between the insertion member and the crown portion. This abutment portion receives the pushing force from the insertion member and transfers it to the crown portion, preventing the force from being directly applied to the paper bundle. This mediator structure enables reliable staple removal while protecting the paper from damage.
2Reliability
If the protrusion amount of the insertion member is increased to ensure insertion between paper bundle and crown portion, then staple removal reliability is improved, but paper bundle damage risk increases
Solution Approach 1:
The patent makes the protrusion amount of the insertion member adjustable rather than fixed. The insertion member can dynamically adapt its protrusion distance based on the specific paper bundle thickness and staple type, allowing optimal insertion depth for each case. This dynamic adjustment ensures reliable staple removal while preventing excessive protrusion that could damage the paper bundle.
3Manufacturing precision
If the pressing force is increased to prevent paper bundle movement during insertion, then insertion accuracy is improved, but paper damage risk increases
Solution Approach 1:
The abutment portion serves as a mediator that decouples the pressing force application from the paper bundle. It provides a stable interface for force transmission during insertion, ensuring the paper bundle remains stationary and insertion accuracy is maintained, while the force is ultimately applied to the crown portion rather than the paper.
4Device complexity
If a fixed protrusion amount is used for the insertion member, then device simplicity is maintained, but adaptability to different paper bundles decreases
Solution Approach 1:
The patent transforms the fixed protrusion amount into an adjustable parameter. The insertion member's protrusion distance can be modified according to different paper bundle thicknesses and staple types, enabling the device to adapt to various binding configurations while maintaining operational simplicity through a straightforward adjustment mechanism.
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
Ensures reliable staple removal without damaging the paper bundle by providing a controlled pushing force and adjustable positioning to suit various binding configurations.
Implementation Method 1
the moving portion including a tip end portion which is inclined in a wedge shape toward a tip end
Data Source
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AI summary
A staple removal device (100) includes: a placement table (104) on which a paper bundle is placed, the paper bundle being bound by a staple (S) and including a first paper surface on which a crown portion is exposed; a moving portion (111) arranged at a position facing the first paper surface in a state where the paper bundle is placed on the placement table (104), the moving portion (111) being movable in a direction along the first paper surface and including a wedge plate (112) inclined in a wedge shape toward a tip end thereof; a driving portion (205) configured to move the moving portion (111) toward the crown portion and insert the wedge plate (112) between the crown portion and the first paper surface in the state where the paper bundle is placed on the placement table (104); and an abutment portion (162b) arranged at a position facing the first paper surface in the state where the paper bundle is placed on the placement table (104), the abutment portion (162b) being abutted against the crown portion from a direction opposite to an insertion direction (D) of the wedge plate (112) after the wedge plate (112) is inserted between the crown portion and the first paper surface. As a result, the staple is reliably removed from the paper bundle without damaging the paper bundle.