Staple removal device

Patent metadata

Field	Value
Publication number	US-11623332-B2
Application number	US-201917293440-A
Country	US
Kind code	B2
Filing date	Nov 13, 2019
Priority date	Nov 13, 2018
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

A staple removal device includes: a placement table on which a paper bundle is placed, the paper bundle being bound by a staple and including a first paper surface; a moving portion arranged at a position facing the first paper surface, the moving portion being movable in a direction along the first paper surface and including a wedge plate inclined in a wedge shape toward a tip end thereof; a driving portion configured to move the moving portion toward a crown portion and insert the wedge plate between the crown portion and the first paper surface; and an abutment portion arranged at a position facing the first paper surface, the abutment portion being abutted against the crown portion from a direction opposite to an insertion direction of the wedge plate after the wedge plate is inserted between the crown portion and the first paper surface.

First claim

The invention claimed is:

1. A staple removal device comprising:
a placement portion on which a paper bundle bound by a staple including a crown portion and a pair of leg portions is placeable, the paper bundle including a first paper surface on which the crown portion is exposed;
a moving portion which is arranged at a position facing the first paper surface in a state where the paper bundle is placed on the placement portion, and is movable in a direction along the first paper surface, the moving portion including a tip end portion which is inclined in a wedge shape toward a tip end thereof;
a driving portion configured to move the moving portion toward the crown portion in the state where the paper bundle is placed on the placement portion and to insert the tip end portion between the crown portion and the first paper surface; and
an abutment portion which is arranged at a position facing the first paper surface in the state where the paper bundle is placed on the placement portion, the abutment portion being abutted against the crown portion from a direction opposite to an insertion direction of the tip end portion at least after the tip end portion is inserted between the crown portion and the first paper surface,
wherein the tip end portion includes a first surface which faces the first paper surface, and a second surface located on a side opposite to the first surface and having an inclined surface which is inclined toward the tip end,
the tip end portion moves the crown portion in a direction away from the first paper surface by the inclined surface as the tip end portion is inserted between the crown portion and the first paper surface and moved in the insertion direction,
the abutment portion is movable in the direction away from the paper surface,
the abutment portion is configured to be abutted against the inclined surface after the tip end portion is inserted between the crown portion and the first paper surface, and
the abutment portion moves in the direction away from the first paper surface so as to follow movement of the crown portion while being abutted against the inclined surface while the tip end portion moves between the crown portion and the first paper surface in the insertion direction.

2. The staple removal device according to claim 1 , further comprising:
a body portion; and
a support portion which includes first and second ends, wherein the second end is rotatably supported by the body portion such that the first end is separable from the first paper surface, and wherein the abutment portion is supported on the first end.

3. The staple removal device according to claim 2 , wherein the abutment portion is arranged at a position facing a first position of the first paper surface located downstream of the crown portion in the insertion direction, and
the support portion allows the abutment portion to be abutted against the second surface of the tip end portion after the tip end portion passes the first position.

4. The staple removal device according to claim 3 , further comprising:
a restricting portion which is located between the first paper surface and the abutment portion, and moves in the insertion direction in accordance with movement of the tip end portion in the insertion direction, wherein
the restricting portion restricts the abutment portion from being abutted against the second surface until the tip end portion passes the first position, and allows the abutment portion to be abutted against the second surface after the tip end portion passes the first position.

5. The staple removal device according to claim 4 , wherein the restricting portion includes a wall portion configured to block communication between the abutment portion and the second surface until the tip end portion passes the first position, and an opening through which the abutment portion and the second surface communicate with each other after the tip end portion passes the first position.

6. The staple removal device according to claim 1 , wherein the abutment portion includes a recessed portion cut out at a position facing a tip end of the tip end portion.

7. The staple removal device according to claim 1 , wherein the abutment portion includes a recessed portion configured to engage the crown portion at a position facing the crown portion.

8. The staple removal device according to claim 1 , wherein the abutment portion includes a portion which is widened toward an end of the first paper surface.

9. The staple removal device according to claim 1 , wherein the abutment portion includes, on a surface facing the tip end portion, a protruding portion formed linearly in a direction in which the abutment portion is abutted against and separated from the first paper surface.

10. A staple removal device configured to remove a staple from a paper bundle bound by the staple which includes a crown portion and a pair of leg portions, the staple removal device comprising:
a placement portion which includes a placement surface on which the paper bundle is placeable;
an insertion portion which is arranged to face a paper surface of the paper bundle on a side where the crown portion is exposed in a state where the paper bundle is placed on the placement surface, the insertion portion being insertable between the crown portion and the paper surface;
an insertion portion moving portion which is connected to the insertion portion and configured to move the insertion portion along the paper surface; and
an insertion portion adjustment portion which is connected to the insertion portion and is configured to adjust a position of the insertion portion relative to the placement surface in a thickness direction of the paper bundle,

wherein the insertion portion adjustment portion includes:
a base end portion;
a tip end portion;
a rotation shaft rotatably arranged between the base end portion and the tip end portion;
a first portion which is located between the base end portion and the rotation shaft and configured to move in a direction away from the placement surface when the rotation shaft rotates in a counterclockwise direction;
a second portion which is located between the rotation shaft and the tip end portion and configured to move in a direction towards the placement surface when the rotation shaft rotates in the counterclockwise direction; and
a first portion moving portion configured to move the first portion in the direction away from the placement surface, and
the insertion portion is connected to the second portion.

11. The staple removal device according to claim 10 , wherein the first portion moving portion includes an eccentric axis-shaft and is configured to be rotatable about the eccentric shaft, and an outer peripheral surface of the eccentric shaft is abutted against the first portion.

12. The staple removal device according to claim 10 , wherein the second portion includes a hole which extends from the rotation shaft toward the tip end portion, and the insertion portion includes an engagement portion configured to engage with the hole.

13. The staple removal device according to claim 11 , wherein the first portion moving portion is configured to be rotatable by an operator.

14. A staple removal device configured to remove a staple from a paper bundle bound by the staple which includes a crown portion and a pair of leg portions, the staple removal device comprising:
a placement portion which includes a placement surface on which the paper bundle is placeable;
an insertion portion which is arranged to face a paper surface of the paper bundle on a side where the crown portion is exposed in a state where the

Assignees

• Max Co Ltd

Inventors

• Yagi Nobuaki
• Hakozaki Katsuya
• Yoshie Tooru
• Matsui Tomokazu

Classifications

• B25C11/00 Primary

  Nail, spike, and staple extractors (incorporated in hammers B25D1/00) · CPC title