JP2020078845A - Staple remover - Google Patents

Abstract

To provide a staple remover that can change amounts of protrusions of a wedge plate with respect to a placement base.SOLUTION: A staple remover 100A, which is for removing a staple S from a paper bundle P bound with the staple S, constituted of a crown part and a pair of leg parts, comprises: a placement base 104 having a placement surface 104h on which the paper bundle P can be placed; a wedge plate 112, which is arranged to oppose to a first paper surface Pa at a side to which the crown part is exposed of the paper bundle P with the paper bundle P placed on the placement surface 104h and can be inserted between the crown part and the first paper surface Pa; a driving part 205 that is connected to the wedge plate 112 to move the wedge plate 112 along the first paper surface Pa; and an adjusting mechanism 200A that is connected to the wedge plate 112 to be able to adjust a position, in a thickness direction of the paper bundle P, of the wedge plate 112 with respect to the placement surface 104h.SELECTED DRAWING: Figure 4A

Description

  The present disclosure relates to staple removing devices.

  2. Description of the Related Art Conventionally, a staple removing device for removing staples from a bundle of sheets created by binding a plurality of sheets using a staple having a pair of legs of a crown portion has been used.

  In a typical staple removing device, after pressing a sheet near the staple with a pressing member, an inserting member is inserted between the sheet bundle and the crown portion of the staple to move the staple forward to remove the staple from the sheet bundle. For example, in Patent Documents 1 and 2, an insertion member that is inserted between a pressing unit having a substantially U-shaped contact portion that is brought into contact with the upper surface of a document bundle and a sheet bundle and a staple for binding the sheet bundle. And a binding member removing device provided with.

JP 2000-094362 A JP, 2000-127064, A

  By the way, the binding state of staples for binding a sheet bundle differs depending on the type and number of sheets, the staple binding device used and the type of staples, and not only when the crown portion of the staples is on the sheet bundle surface, but also from the sheet bundle surface. There are various cases such as when it is recessed. In a general staple removing device, a predetermined amount of an insertion member is protruded toward the sheet bundle side from a mounting table on which the sheet bundle is placed and is inserted between the sheet bundle and the crown portion.

  However, such a method has the following problems. That is, for example, when performing staple removal of a thin sheet bundle or a sheet bundle in which corners are bound, the sheet bundle moves due to the pushing force of the insertion member, and the insertion member is not inserted between the sheet bundle and the crown portion. There is a problem. To solve this problem, it is necessary to increase the amount of protrusion of the insertion member toward the sheet bundle side. On the other hand, when the staple is removed from the thick sheet bundle with the protruding amount of the insertion member for the thin sheet bundle, there is a problem that the insertion member collides with the sheet bundle and breaks the sheet bundle. As described above, the optimum value of the protrusion amount (height) of the insertion member with respect to the sheet bundle differs depending on the types of sheets and staples that bind the sheet bundle.

  Therefore, in order to solve the above-described problems, the present invention provides a staple removing device that can change the amount of protrusion of the insertion member with respect to the mounting table according to the type of the sheet bundle and that can staple the sheet bundle in various states. The purpose is to provide.

  A staple removing device according to the present disclosure is a staple removing device that removes staples from a sheet bundle bound by staples including a crown portion and a pair of leg portions, and has a placement surface on which the sheet bundle can be placed. In the state where the sheet bundle is placed on the placing portion and the placing surface, the placing portion is arranged so as to face the sheet surface on the side where the crown portion of the sheet bundle is exposed, and the crown portion and the sheet surface. An insertion part that can be inserted between the insertion part and the insertion part, and an insertion part moving part that moves the insertion part along the paper surface; and an insertion part that is connected to the insertion part And an insertion section adjusting section capable of adjusting the position of the sheet bundle in the thickness direction.

  Another staple removing device according to the present disclosure is a staple removing device that removes staples from a bundle of sheets bound by staples including a crown portion and a pair of legs, and is a placement device on which the sheet bundle can be placed. A placing portion having a surface, and in a state where the sheet bundle is placed on the placing surface, it is arranged so as to face the sheet surface on the side where the crown portion of the sheet bundle is exposed, and the crown portion. An insertion part that can be inserted between the paper surface and the insertion part, a moving part that is connected to the insertion part and moves the insertion part along the paper surface, and a connection part that is connected to the placement part. The placement unit adjustment unit is capable of adjusting the position of the sheet bundle in the thickness direction with respect to the insertion unit.

  According to the staple removing device of the present disclosure, even when the types of sheets and staples and the binding positions are different, the position in the thickness direction of the sheet bundle with respect to the placement surface of the insertion unit can be adjusted by operating the insertion unit adjustment unit. Therefore, it is possible to set the optimum amount of protrusion of the insertion section with respect to the mounting table according to various situations such as the type of paper and staple. As a result, it is possible to prevent damage to the paper when removing the staples and failure to remove the staples.

  Further, according to another staple removing apparatus of the present disclosure, even when the types of sheets and staples and the binding positions are different, the thickness direction of the sheet bundle with respect to the insertion section of the placement section is operated by the operation of the placement section adjustment section. Since the position of the insertion section can be adjusted, it is possible to set the optimum protrusion amount of the insertion section with respect to the mounting table according to various situations such as the type of paper and staple. As a result, it is possible to prevent damage to the paper when removing the staples and failure to remove the staples.

It is the perspective view which looked at the staple removal device concerning a 1st embodiment from the slanting front. It is the perspective view which looked at the staple removing device concerning a 1st embodiment from the slanting back. FIG. 3 is a perspective view showing the internal configuration of the staple removing device according to the first embodiment. It is sectional drawing of the staple removing apparatus which concerns on 1st Embodiment. FIG. 6 is an enlarged view of a sheet bundle stapled. FIG. 3 is an exploded perspective view of the staple removing device according to the first embodiment. It is a perspective view of the adjustment fulcrum shaft which concerns on 1st Embodiment. It is a side view of the adjustment fulcrum shaft which concerns on 1st Embodiment. It is a figure which shows operation|movement of the staple removal apparatus in case the protrusion amount of the wedge plate which concerns on 1st Embodiment is made into a 1st protrusion amount. It is a figure which shows operation|movement of the staple removal apparatus in case the protrusion amount of the wedge plate which concerns on 1st Embodiment is made into a 2nd protrusion amount. It is a figure which shows operation|movement of the staple removal apparatus in case the protrusion amount of the wedge plate which concerns on 1st Embodiment is made into the 3rd protrusion amount. FIG. 7 is a perspective view of a staple removing device according to a second embodiment. FIG. 9 is an exploded perspective view of a staple removing device according to a second embodiment. It is a principal part enlarged perspective view of a slide shaft and a 1st attachment part concerning a 2nd embodiment. It is a principal part expanded sectional view of the adjustment knob and adjustment screw which concern on 2nd Embodiment. It is an operation|movement figure of the staple removal apparatus in case the protrusion amount of the wedge plate which concerns on 2nd Embodiment is made into the 4th protrusion amount. It is an operation|movement figure of the slide shaft which concerns on 2nd Embodiment. It is an operation|movement figure of the wedge board and the mounting base which concern on 2nd Embodiment. It is an operation|movement figure of the staple removal apparatus in case the protrusion amount of the wedge plate which concerns on 2nd Embodiment is made into the 5th protrusion amount. It is an operation|movement figure of the slide shaft which concerns on 2nd Embodiment. It is an operation|movement figure of the wedge board and the mounting base which concern on 2nd Embodiment. It is an operation|movement figure of the staple removal apparatus when the protrusion amount of the wedge plate which concerns on 2nd Embodiment is made into the 6th protrusion amount. It is an operation|movement figure of the slide shaft which concerns on 2nd Embodiment. It is an operation|movement figure of the wedge board and the mounting base which concern on 2nd Embodiment. It is a perspective view of the staple removing device which concerns on 3rd Embodiment. It is a perspective view of the staple removing device which concerns on 3rd Embodiment. It is an exploded perspective view of a needle removal device concerning a 3rd embodiment. It is sectional drawing of the staple removing apparatus which concerns on 3rd Embodiment. It is a principal part enlarged view of FIG. 20A.

  Hereinafter, an example of the staple removing device 100A, 100B, 100C according to the present disclosure will be described with reference to the drawings.

<First Embodiment>
[Example of Overall Configuration of Staple Removing Device 100A]
FIG. 1 is a perspective view of a staple removing device 100A according to the first embodiment as seen obliquely from the front side, and FIG. 2 is a perspective view of the staple removing device 100A as seen from the oblique rear side according to the first embodiment.

  The staple removing device 100A is a staple stapling device that automatically removes the staples S from the bundle of sheets P bound by the staples S. The staple removing apparatus 100A is mounted on the mounting table 104, and a mounting table 104 having a substantially rectangular parallelepiped housing 102, a mounting surface 104h provided on the upper surface of the housing 102 and on which the sheet bundle P can be mounted. A paper pressing mechanism unit 170 that presses the placed paper stack P. A sheet bundle insertion port 105 for inserting the sheet bundle P is provided between the mounting table 104 and the sheet pressing mechanism 170.

  In the present embodiment, the side on which the paper pressing mechanism 170 (the portion exposed from the housing 102) is provided is the rear side of the staple removing apparatus 100A, and the opposite side is the front side of the staple removing apparatus 100A. .. The side on which the adjustment knob 106 described below is provided is the left side of the staple removing apparatus 100A, and the opposite side is the right side of the staple removing apparatus 100A. The side on which the mounting table 104 is provided is the upper side of the staple removing apparatus 100A, and the opposite side is the lower side of the staple removing apparatus 100A.

  An activation switch 108 for starting the operation of the staple removing device 100A is provided on the upper surface of the paper pressing mechanism 170. An adjustment knob (operation part) 106 for adjusting the height of the mounting table 104 is provided on the front part of the left side surface of the housing 102. A dust box 202 for accommodating the staples removed from the sheet bundle P is provided at the rear of the housing 102. The dust box 202 is configured to be detachable from the rear part of the housing 102.

[Internal Configuration Example of Staple Removing Device 100A]
3 is a perspective view showing the internal configuration of the staple removing device 100A according to the first embodiment, FIG. 4A is a sectional view of the staple removing device 100A according to the first embodiment, and FIG. 4B is stapled with staples S. FIG. 5 is an enlarged view of the sheet stack P, and FIG. 5 is an exploded perspective view of the staple removing device 100A according to the first embodiment.

  First, the sheet bundle P bound by the staple S will be described with reference to FIGS. 4A and 4B. The staple S has a crown portion Sa and a pair of leg portions Sb and Sb formed by bending both ends in the longitudinal direction of the crown portion Sa. The sheet bundle P penetrates the pair of leg portions Sb and Sb of the staple S from the first sheet surface Pa of the lowermost sheet of the plurality of stacked sheets toward the second sheet surface Pb of the uppermost sheet. , The penetrating leg portions Sb and Sb are bent inward and bound. The binding position of the staple S is, for example, a corner portion or an edge portion of the sheet. In the present embodiment, the staple S is removed from such a sheet bundle P.

  The staple removing device 100A includes a staple removing mechanism section 110A including a wedge plate (insertion section) 112 that can be inserted between the crown section Sa for pulling out the staple S from the sheet stack P and the first sheet surface Pa, and the mounting table 104. The paper pressing mechanism 170 that presses the stack of paper P placed on the paper, the drive unit 205 that drives the staple removing mechanism 110A and the paper pressing mechanism 170, and the case 250 that defines the space for accommodating the above respective units. Prepare As shown in FIG. 5, the case 250 has a first side wall 252 and a second side wall 253 that are arranged to face each other in the left-right direction of the motor 206, the staple removing mechanism 110A, and the paper pressing mechanism 170.

  The drive unit 205 is an example of an insertion unit moving unit, and includes a motor 206, which is, for example, a DC motor, and a plurality of gears (not shown), and is connected to the drive shaft 144 via the plurality of gears. The motor 206 is driven by turning on the activation switch 108, for example, and rotates the drive shaft 144 to drive the staple removing mechanism unit 110A and the paper pressing mechanism unit 170. Specifically, the motor 206 is connected to the wedge plate 112 via the drive shaft 144 and the like, and moves the wedge plate 112 along the first sheet surface Pa.

  The staple removing mechanism 110A is arranged so as to face the first sheet surface Pa on the side where the crown portion Sa of the sheet bundle P is exposed when the sheet bundle P is placed on the placement surface 104h. In the thickness direction of the sheet bundle P, which is connected to the wedge plate 112 and is connected to the wedge plate 112, and the wedge plate 112 that can move forward in the crown 102 and be inserted between the crown portion Sa and the first sheet surface Pa. An adjustment mechanism (insertion section adjustment section) 200A capable of adjusting the position is provided. In the present embodiment, the movement of the wedge plate 112 from the front side to the rear side inside the housing 102 is referred to as forward movement, and the movement from the rear side to the front side inside the housing 102 is referred to as backward movement. Further, the direction in which the wedge plate 112 advances is referred to as an insertion direction D.

  The wedge plate 112 is configured to be movable in the front-rear direction of the housing 102, and is a member that is inserted between the sheet bundle P and the staple S to pull out the staple S from the sheet bundle P. The wedge plate 112 is an elongated plate-like member, and has a tapered front end side so as to be easily inserted between the sheet bundle and the staple S. More specifically, the tip side of the wedge plate 112 is configured such that the plate thickness gradually decreases toward the tip. The base end of the wedge plate 112 is attached to the wedge plate holder 114.

  The wedge plate holder 114 is made of a member formed by bending a flat plate, and a wedge plate shaft 118 is attached to the lower portion of the wedge plate holder 114 via a shaft hole. The wedge plate shaft 118 is an axis for moving the wedge plate 112 in parallel along the first sheet surface Pa (mounting table 104). A wedge plate drive shaft 126 is attached to the front side of the wedge plate holder 114 via a shaft hole. The wedge plate drive shaft 126 is a shaft for moving the wedge plate 112 forward and backward.

  A crown holder 116 is provided inside the wedge plate holder 114 while facing the wedge plate 112. The crown holder 116 is a member for supporting the staple S pulled out from the sheet bundle P. A wedge plate shaft 118 is attached to the lower part of the side wall of the crown holder 116 through a shaft hole. A wedge plate drive shaft 126 is attached to the rear portion of the side wall of the crown holder 116 via a shaft hole. With such a configuration, the crown holder 116 can move forward and backward integrally with the wedge plate 112.

  A staple pressing portion 162 is provided on the downstream side (rear side) in the insertion direction D of the wedge plate 112 with respect to the staple S of the sheet bundle P placed on the placing table 104. The staple pressing portion 162 contacts the crown portion of the staple S from a direction opposite to the inserting direction D of the wedge plate 112 and restricts the movement of the crown portion in the inserting direction D. The staple pressing portion 162 is supported by the supporting member 163.

  As shown in FIG. 4A, the support member 163 is composed of a pair of flat plate members that are bent rearward from both side surface portions of the staple pressing portion 162. A staple pressing portion 162 is attached to one end of the supporting member 163, and the other end of the supporting member 163 is rotatably supported by a shaft 158.

  An ejector 156 is inserted and sandwiched between the wedge plate 112 and the crown holder 116, as shown in FIG. 4A. The ejector 156 abuts the staple S held by the crown holder 116 and drops the staple S into the lower dust box 202 when the wedge S 112 and the crown holder 116 are retracted by pulling out the staple S. The ejector 156 is supported by the ejector lever 154.

  The ejector lever 154 is composed of a pair of flat plate members, and is arranged so as to overlap the outside of the support member 163. A shaft 158 is attached to a rear portion of the ejector lever 154 through a shaft hole, and the ejector lever 154 is configured to be rotatable about the shaft 158 as a fulcrum. The ejector lever 154 is attached to the support member 163 via a tension spring (not shown).

[Configuration Example of Adjustment Mechanism 200A]
The adjustment mechanism 200A is an example of an insertion portion adjustment unit, and as shown in FIGS. 4A and 5, a pull-down link 140 having a base end portion 140d (front end) and a tip end portion 140e (rear end), and a base end portion 140d. When the rotation fulcrum portion (rotation shaft) F is provided between the tip end portion 140e and the base end portion 140d and the rotation fulcrum portion F, and the rotation fulcrum portion F rotates in the counterclockwise direction, the mounting is performed. It is located between the first portion 140b that moves in a direction away from the placement surface 104h, the tip end portion 140e, and the rotation fulcrum portion F. When the rotation fulcrum portion F rotates counterclockwise, it approaches the placement surface 104h. The second portion 140c that moves in the direction, and the adjustment fulcrum shaft (first portion moving portion) 122 that moves the first portion 140b in the direction away from the mounting surface 104h. The adjustment fulcrum shaft 122 is rotatably supported by the first portion 140b of the pull-down link 140. The second portion 140c of the pull-down link 140 is provided with an elongated hole 141 extending from the rotation fulcrum portion F toward the tip portion 140e of the second portion 140c, and the engaging portions of the wedge plate holder 114, the wedge plate shaft 118, and the like. The wedge plate 112 is connected (engaged) to the elongated hole 141 via the.

  As shown in FIGS. 3, 5 and 7, the pull-down link 140 is composed of a pair of flat plate members formed by bending a metal plate, for example, and is arranged below and inside the crown holder 116, respectively. .. The pull-down link 140 is formed with a long hole 141 extending in the front-rear direction. The major axis of the long hole 141 is determined based on the moving range of the wedge plate 112 in the front-rear direction. A wedge plate shaft (connecting portion) 118 is slidably inserted into the long hole 141. As a result, the wedge plate 112 and the crown holder 116 attached to the wedge plate shaft 118 can move forward and backward by moving along the long diameter direction of the long hole 141 of the pull-down link 140. Further, the adjustment fulcrum shaft 122 is attached to the first portion 140b of the pull-down link 140, and the pull-down link 140 is configured to be rotatable around the rotation fulcrum portion F by rotating the adjustment fulcrum shaft 122. ..

  A projecting portion 141 a projecting upward is formed at the lower end edge of the long hole 141. The length (section) of the protruding portion 141a in the major axis direction is such that the wedge plate 112 is lifted until the wedge plate 112 is inserted between the first sheet surface Pa of the sheet stack P and the crown portion Sa. It has a length that can maintain the state of being pressed against Pa. This is because once the wedge plate 112 is inserted between the sheet stack P and the crown portion of the staple S, the state is maintained, and it is not necessary to lift the wedge plate 112 thereafter. As a result, it is possible to prevent the force of pressing the wedge plate 112 against the sheet bundle P from constantly acting, so that it is possible to prevent damage to the sheet bundle P.

  The drive shaft 144 is inserted into a shaft hole formed in a substantially central portion of the pull-down link 140. A pull-up return cam 150 is attached to the outside of the pull-up link 140 of the drive shaft 144. A pull-down return cam roller 152 is attached to the outer center upper side of the pull-down link 140 so as to come into contact with the pull-down return cam 150. The pull-down link 140, the pull-up return cam 150, and the pull-down return cam roller 152 are an example of a mechanism for pulling down the wedge plate 112 in the direction away from the mounting table 104 when pulling out the staple S from the sheet stack P. Further, in the present embodiment, the rotation fulcrum portion F is the center of the contact position between the pull-down return cam 150 and the pull-down return cam roller 152.

[Example of configuration of adjustment fulcrum shaft 122]
6A is a perspective view of the adjustment fulcrum shaft 122 according to the first embodiment, and FIG. 6B is a side view of the adjustment fulcrum shaft 122 according to the first embodiment.

  The adjustment fulcrum shaft 122 has an eccentric shaft A1 and is configured to be rotatable around the eccentric shaft A1. The outer peripheral surface of the eccentric shaft A1 contacts the first portion 140b provided on the pull-down link 140.

  The adjustment fulcrum shaft 122 is continuously provided on each of the first shaft portion 122a having the first shaft diameter D1 and both ends in the axial direction of the first shaft portion 122a, and is smaller than the first shaft diameter D1. The second shaft portions 122b and 122c having the biaxial diameter D2 are provided.

  As shown in FIG. 5, the first shaft portion 122 a is inserted into the shaft holes 140 a and 140 a of the down link 140, and is rotatably supported by the down link 140. The second shaft portion 122b is inserted into the shaft hole 252c of the first side wall 252, and is rotatably supported by the first side wall 252. The second shaft portion 122c is inserted into the shaft hole 253c of the second side wall 253, and is rotatably supported by the second side wall 253.

  The eccentric axis A1 of the first shaft portion 122a is provided at a position radially displaced from the axis A2 of the second shaft portions 122b and 122c by a distance X. The second shaft portions 122b and 122c are provided inside the outer circumference of the first shaft portion 122a so that a part of the outer circumference of the second shaft portion 122b contacts a part of the outer circumference of the first shaft portion 122a. Be done.

  A portion of the first shaft portion 122a that protrudes outward from the second shaft portions 122b and 122c serves as an adjustment portion 122d (see a colored portion in FIG. 6B) that adjusts the amount of protrusion of the wedge plate 112 from the mounting table 104. There is. Further, among the portions of the adjusting portion 122d protruding from the second shaft portions 122b and 122c, the portion having the largest diameter is referred to as the largest portion M. With such a configuration, when the second shaft portions 122b and 122c of the adjustment fulcrum shaft 122 rotate about the axis A2, the first shaft portion 122a also rotates about the eccentric axis A1, depending on the rotation position of the first shaft portion 122a. The pull-down link 140 can be vertically rotated.

  As shown in FIG. 5, the adjustment knob 106 is attached to the second shaft portion 122b of the adjustment fulcrum shaft 122. The operator adjusts the height of the mounting table 104 by rotating the adjustment knob 106 and rotating the adjustment fulcrum shaft 122 clockwise or counterclockwise.

[Configuration Example of Paper Pressing Mechanism 170]
As shown in FIGS. 3 and 4A, the paper pressing mechanism unit 170 is provided so as to extend from the inside of the housing 102 to the outside via the first side wall 252. A paper pressing plate 192 is provided at a position facing the mounting table 104 on the outside of the paper pressing mechanism 170. When the staple removing operation is started, the paper pressing plate 192 descends toward the mounting table 104 and presses the sheet bundle P on the mounting table 104.

[Example of operation when adjusting the amount of protrusion of the wedge plate 112 of the staple removing device 100A]
Next, the operation of the staple removing device 100A when changing the protrusion amount of the wedge plate 112 with respect to the mounting table 104 will be described. In the following description, as shown in FIG. 7, the wedge plate shaft 118 is located on the protruding portion 141a of the elongated hole 141 of the pull-down link 140, and the wedge plate 112 is protruded from the mounting table 104. The description will be given with reference to the amount of protrusion from the mounting table 104. Further, in this case, the state in which the maximum portion M of the first shaft portion 122a is located on the front side is the intermediate position, which is the standard protrusion amount of the wedge plate 112, and the intermediate position of the adjustment knob 106. Further, although the operation on the left side of the staple removing apparatus 100A will be described below, the same operation is performed on the right side of the staple removing apparatus 100A, and thus detailed description thereof will be omitted.

  FIG. 7 is a diagram showing the operation of the staple removing device 100A when the protrusion amount of the wedge plate 112 according to the first embodiment is the first protrusion amount H1. The first protrusion amount H1 of the wedge plate 112 is the protrusion amount when the adjustment knob 106 is set to the intermediate position.

  When the adjustment knob 106 is set to the intermediate position by the user, the maximum portion M of the adjustment portion 122d of the adjustment fulcrum shaft 122 faces in the horizontal direction opposite to the insertion direction D. In this case, since the eccentric axis A1 and the axis A2 are horizontal and the adjustment portion 122d of the adjustment fulcrum shaft 122 has almost no influence on the protrusion amount of the wedge plate 112, the pull-down link 140 does not move up and down and the upper surface 112c of the wedge plate 112. The protrusion amount of the above with respect to the mounting surface 104h is the standard first protrusion amount H1.

  FIG. 8 is a diagram showing the operation of the staple removing device 100A when the protrusion amount of the wedge plate 112 according to the first embodiment is set to the second protrusion amount H2.

  When the wedge plate adjusting knob 107 is rotated counterclockwise from the intermediate position by the user, the adjustment fulcrum shaft 122 also rotates counterclockwise. Accordingly, the maximum portion M of the adjustment portion 122d of the adjustment fulcrum shaft 122 moves downward, so that the first portion 140b of the pull-down link 140 causes the wedge plate 112 to move in accordance with the amount of protrusion of the maximum portion M of the adjustment portion 122d. Move away from. As a result, the pull-down link 140 rotates counterclockwise around the pivot fulcrum F of the pull-down return cam 150 and the pull-down return cam roller 152, and the wedge plate shaft 118 provided in the second portion 140c is pushed up.

  When the wedge plate shaft 118 is pushed up, the wedge plate 112 rotates upward with the wedge plate drive shaft 126 as a fulcrum, whereby the tip side of the wedge plate 112 rises. In this case, the protrusion amount of the upper surface 112c of the wedge plate 112 with respect to the mounting surface 104h is the second protrusion amount H2, which is larger than the first protrusion amount H1 shown in FIG. 7. Thus, by rotating the wedge plate adjusting knob 106 counterclockwise from the intermediate position, the protrusion amount of the wedge plate 112 can be increased from the reference protrusion amount.

  FIG. 9 is a diagram showing the operation of the staple removing device 100A when the protrusion amount of the wedge plate 112 according to the first embodiment is the third protrusion amount H3.

  When the wedge plate adjusting knob 106 is rotated clockwise from the intermediate position by the user, the adjustment fulcrum shaft 122 also rotates clockwise. Along with this, the maximum portion M of the adjustment portion 122d of the adjustment fulcrum shaft 122 moves upward, so that the first portion 140b of the pull-down link 140 moves to the wedge plate 112 according to the protrusion amount of the maximum portion M of the adjustment portion 122d. Move toward you. As a result, the pull-down link 140 rotates clockwise around the pivot fulcrum F of the pull-down return cam 150 and the pull-down return cam roller 152, and the wedge plate shaft 118 provided in the second portion 140c is pushed down.

  When the wedge plate shaft 118 is pushed down, the wedge plate 112 rotates downward with the wedge plate drive shaft 126 as a fulcrum, and the tip end side of the wedge plate 112 descends. In this case, the protrusion amount of the upper surface 112c of the wedge plate 112 with respect to the mounting surface 104h is the third protrusion amount H3, which is smaller than the first protrusion amount H1 shown in FIG. In this way, by rotating the wedge plate adjusting knob 107 clockwise from the intermediate position, the amount of protrusion of the wedge plate 112 can be reduced from the reference amount of protrusion.

[Operation Example of Staple Removing Device 100 During Needle Removal]
Next, the operation of the staple removing device 100A when the staple S is pulled out from the sheet bundle P will be described with reference to FIG.

  When the user places the sheet bundle P on the placing table 104 and presses the start switch 108, the motor 206 drives to lower the paper pressing plate 192 of the paper pressing mechanism unit 170, which causes the paper pressing plate 192 to move. The sheet bundle P is pressed. Subsequently, when the paper stack P is pressed by the paper pressing plate 192, the wedge plate 112 advances in the insertion direction D and is inserted between the paper stack P and the crown portion of the staple S. When the wedge plate 112 moves forward, the legs Sb, Sb of the staple S gradually rise as the thickness of the wedge plate 112 increases, and when the pressing by the wedge plate 112 is completed, the legs Sb, Sb of the staple S are completed. Occurs.

  Subsequently, the operation of the pull-down link 140, the pull-up return cam 150, and the pull-down return cam roller 152 shown in FIG. 4A and the like causes the wedge plate 112 and the crown holder 116 to move in a direction away from the mounting table 104, that is, downward. As a result, the staple S with the legs Sb and Sb raised is pulled out from the sheet stack P. When the staple S is pulled out from the bundle of sheets P, the wedge plate 112 and the crown holder 116 move back again while moving backward in a direction approaching the mounting table 104, that is, upward. That is, the wedge plate 112 and the like return to the home position. As a result, the staple S drops from the crown holder 116, and the staple S is stored in the dust box 202. Such an operation is repeatedly executed when removing staples.

  As described above, according to the first embodiment, by operating the adjustment knob 106, the pull-down link 140 is rotated in the vertical direction via the adjustment fulcrum shaft 122, and the mounting table 104 of the wedge plate 112 is rotated. The amount of protrusion with respect to can be changed. Accordingly, the protrusion amount of the wedge plate 112 with respect to the mounting table 104 can be changed according to the type of the sheet bundle P or the staple S, and thus the type of the sheet bundle P of which the staple is to be removed, the type of the staple S, and the binding position are different. Even in this case, the optimum protrusion amount (height) of the wedge plate 112 with respect to the mounting table 104 can be set according to various situations such as the type of the paper and the staple S. As a result, it is possible to prevent damage to the paper when removing the staples and failure to remove the staples.

  Further, staple removal is performed on a sheet bundle P of a type in which the optimal protrusion amount of the wedge plate 112 is different from that of a general sheet bundle P, such as a sheet bundle P composed of sheets of a type not used by other users. Even in such a case, the protrusion amount of the wedge plate 112 can be appropriately adjusted. Further, the user himself/herself optimizes the wedge plate 112 for the sheet bundle P that is frequently used by each user, such as a user who often binds the corners of the thin sheet bundle P or a user who often binds the thick sheet bundle P flatly. Adjustable amount of protrusion.

  Further, even if the protrusion amount of the wedge plate 112 is in error due to the difference in component accuracy of the staple removing device 100A, or if the component is worn or deformed due to long-term use of the staple removing device 100A, the wedge removal is performed by the user. Since the protrusion amount of the plate 112 can be arbitrarily set and solved, the staple removing device 100A can be continuously used without any problem.

<Second Embodiment>
In the staple removing device 100B according to the second embodiment, the protrusion amount of the wedge plate 112 with respect to the mounting table 104 is changed by changing the position of the mounting table 104 with respect to the wedge plate 112. It should be noted that components and operations common to those of the staple removing device 100A according to the first embodiment are denoted by common reference numerals, and detailed description thereof will be omitted.

[Example of Configuration of Staple Removing Device 100B]
10 is a perspective view of a staple removing device 100B according to the second embodiment, FIG. 11 is an exploded perspective view of the staple removing device 100B according to the second embodiment, and FIG. 12 is according to the second embodiment. FIG. 13 is an enlarged perspective view of an essential part of the slide shaft 261 and the first mounting portion 104a, and FIG. 13 is an enlarged sectional view of an essential part of the adjusting knob 106 and the adjusting screw 107 according to the second embodiment.

  The staple removing device 100B is connected to at least the case 250 that accommodates the staple removing mechanism 110B and the like, and the placing table 104, and is capable of adjusting the position of the sheet stack P in the thickness direction of the placing surface 104h with respect to the wedge plate 112. An adjusting mechanism 200B, which is an example of a placement unit adjusting unit, is provided.

  The case 250 is provided with a bottom wall 251 having a left side, a right side, a front side and a rear side and having a rectangular shape in plan view, a first side wall 252 erected from the left side of the bottom wall 251, and a right side of the bottom wall 251. A second side wall 253 facing the first side wall 252 and a front side of the bottom wall 251 standing upright and connecting the first side wall 252 and the second side wall 253 from a rear side of the bottom wall 251. It is provided upright and has a rear wall 255 facing the front wall 254.

  As shown in FIGS. 11 and 12, the first side wall 252 has a guide groove 252a for slidably engaging a slide shaft (guide shaft) 261 of an adjustment link 260, which is an example of a mounting portion adjustment unit. Has been formed. The guide groove 252a is an opening extending in the front-rear direction of the first side wall 252, and an insertion opening into which the expanded diameter portion of the slide shaft 261 can be inserted is provided on the rear end side of the opening.

  A guide groove 253a for slidably engaging the slide shaft 262 of the adjustment link 260 is formed in the second side wall 253. The guide groove 253a is an opening extending in the front-rear direction of the second side wall 253, and an insertion opening into which the expanded diameter portion of the slide shaft 262 can be inserted is provided on the rear end side of the opening.

  As shown in FIGS. 10 and 11, the mounting table 104 is provided with a first mounting portion 104a and a second mounting portion 104b, which are side walls extending downward from each of the lateral side portions in the left-right direction. The mounting table 104, the first mounting portion 104a, and the second mounting portion 104b can also be formed by bending a metal plate.

  The mounting table 104 is disposed so as to close the upper part of the staple removing mechanism 110B and the like, the first mounting portion 104a is mounted on the outer upper end of the first side wall 252, and the second mounting portion 104b is mounted on the second side wall 253. It is attached to the upper outer edge.

  The fulcrum shaft 101 is inserted through the shaft holes formed in the front end portions of the first mounting portion 104a, the second mounting portion 104b, the first side wall 252, and the second side wall 253. Stoppers 270 and 271 are attached to both ends of the fulcrum shaft 101 so that the fulcrum shaft 101 does not come off from the case 250.

  As shown in FIGS. 11 and 12, an elongated hole 104e extending in the vertical direction is formed at the rear end of the first mounting portion 104a. The rear end side of the first attachment portion 104a is attached to the first side wall 252 by the stepped guide pin 272 so as to be vertically movable via the elongated hole 104e.

  Similarly, an elongated hole 104f extending in the vertical direction is formed at the rear end of the second mounting portion 104b. The rear end side of the second mounting portion 104b is mounted by the stepped guide pin 273 via the elongated hole 104f so as to be vertically movable on the second side wall 253.

  A guide groove 104c is formed in a portion projecting below the rear end of the first mounting portion 104a. The guide groove 104c includes an inclined surface that is inclined in a direction away from the mounting table 104 from the front end side toward the rear end side, and the rear end edge is formed by a cutout opening. The slide shaft 261 of the adjustment link 260 abuts on the inclined surface and is slidably engaged with the guide groove 104c.

  Similarly, a guide groove 104d is formed in a portion projecting below the rear end of the second mounting portion 104b. The guide groove 104d is composed of an opening cut out so as to incline forward (obliquely forward) from the rear edge toward the mounting table 104 side. The slide shaft 262 of the adjustment link 260 is slidably engaged with the inclined surface of the guide groove 104d.

  As shown in FIGS. 10 and 13, the adjustment mechanism 200B includes an adjustment knob 106, an adjustment screw 107 to which the adjustment knob 106 is attached, an adjustment direction D of the wedge plate 112, and an adjustment that is movable in a direction opposite to the insertion direction. And a link 260. The adjustment mechanism 200A is configured to be operable by the operator.

  A head portion 107a of the adjusting screw 107 is attached to a substantially central upper portion of the front surface of the front wall 254, and a screw portion 107b in which a screw groove of the adjusting screw 107 is formed protrudes toward the front side of the front wall 254. An adjusting knob 106 is rotatably attached to the screw portion 107b of the adjusting screw 107. In the second embodiment, the adjustment knob 106 is provided not on the side surface side of the housing 102 but on the front surface side of the housing 102. When the user turns the adjusting knob 106, the adjusting knob 106 moves in the front-back direction, which is the axial direction of the adjusting screw 107.

  As shown in FIGS. 10 and 11, the adjustment link 260 is an elongated plate-shaped member having a substantially U shape, and extends along the upper outer periphery of the front wall 254, the first side wall 252, and the second side wall 253. Attached to the case 250. Specifically, the adjustment link 260 includes a front portion 260a extending along the front wall 254, a first side portion 260b extending along the first side wall 252, and a second side portion 260c extending along the second side wall 253. Have and.

  A recess 260d is formed in the lower end edge of the adjustment link 260 on the front wall 254 side substantially at the center, and the recess 260d is fitted into the adjustment screw 107 formed on the front wall 254 from above. At this time, the front surface of the adjustment link 260 contacts the rear surface of the adjustment knob 106, as shown in FIG.

  As shown in FIGS. 11 and 12, one end of the slide shaft 261 is attached to the inside of the rear end of the first side portion 260b. The other end of the slide shaft 261 is slidably engaged with each of the guide groove 252a of the first side wall 252 and the guide groove 104c of the first mounting portion 104a.

  One end of the slide shaft 262 is attached to the inside of the rear end of the second side portion 260c. The other end of the slide shaft 262 slidably engages with each of the guide groove 252a of the second side wall 253 and the guide groove 104d of the second mounting portion 104b.

  With this configuration, when the adjustment knob 106 moves in the front-rear direction, the adjustment link 260 moves in the front-rear direction in conjunction with this, whereby the slide shaft 261 slides in the guide grooves 104c and 252a, and the slide shaft 262 moves. The guide grooves 104d and 253a are slid. At this time, since the slide shafts 261 and 262 move in the front-rear direction along the guide grooves 252a and 253a without displacing the vertical position, the guide grooves 104c and 104d contact the inclined surfaces of the slide shafts 261 and 262. It touches and slides while being pushed in the vertical direction. As a result, in the guide grooves 104c and 104d, the movement in the front-back direction is converted into the movement in the vertical direction, so that the first mounting portion 104a and the second mounting portion 104b move vertically.

[Operation Example of Staple Removing Device 100B]
Next, an operation example of the staple removing device 100B according to the second embodiment will be described. Note that, hereinafter, the protrusion amount of the wedge plate 112 at the intermediate (standard) position among the positions of the mounting table 104 with respect to the wedge plate 112 is referred to as a fourth protrusion amount H4. Further, the rotational position of the adjusting knob 106 in this case is referred to as an intermediate position. Further, hereinafter, the operation on the left side of the staple removing apparatus 100B will be described, but since the configuration and operation are similar to those on the right side of the staple removing apparatus 100B, detailed description will be omitted.

  14A is an operation diagram of the staple removing device 100B when the protrusion amount of the wedge plate 112 according to the second embodiment is the fourth protrusion amount H4, FIG. 14B is an operation diagram of the slide shaft 261, and FIG. 14C is a wedge. 6 is an operation diagram of the plate 112 and the mounting table 104. FIG.

  When the adjustment knob 106 is set to the intermediate position by the user as shown in FIG. 14A, the slide shaft 261 is positioned substantially in the middle of the guide groove 104c in the major axis direction as shown in FIG. 14B, and the stepped guide pin 272 is formed. Is located approximately in the middle of the long hole 104e of the first mounting portion 104a in the major axis direction. As a result, as shown in FIG. 14C, the upper surface 112c of the wedge plate 112 protrudes from the mounting surface 104h by the fourth protrusion amount H4.

  15A is an operation diagram of the staple removing device 100B when the protrusion amount of the wedge plate 112 according to the second embodiment is the fifth protrusion amount H5, FIG. 15B is an operation diagram of the slide shaft 261, and FIG. 15C is a wedge. 6 is an operation diagram of the plate 112 and the mounting table 104. FIG.

  As shown in FIG. 15A, when the user rotates the adjusting knob 106 by a predetermined angle in the clockwise direction from the intermediate position, the adjusting knob 106 advances along the adjusting screw 107, and thus the adjusting link attached to the adjusting knob 106. 260 also moves forward. Along with this, as shown in FIG. 15B, the slide shaft 261 slides forward along the guide groove 104c of the first mounting portion 104a and the guide groove 252a of the first side wall 252 to move the first mounting portion 104a. It is pushed up along the guide groove 104c and the long hole 104e. As shown in FIG. 15C, the mounting table 104 moves in a direction approaching the wedge plate 112 with the fulcrum shaft 101 as a fulcrum. That is, the height of the mounting table 104 on the front end side (rear side) rises. As a result, the upper surface 112c of the wedge plate 112 has substantially the same height as the mounting surface 104h, and the fifth protrusion amount H5, which is smaller than the fourth protrusion amount H4.

  16A is an operation diagram of the staple removing device 100B when the protrusion amount of the wedge plate 112 according to the second embodiment is the sixth protrusion amount H6, FIG. 16B is an operation diagram of the slide shaft 261, and FIG. 16C is a wedge. 6 is an operation diagram of the plate 112 and the mounting table 104. FIG.

  As shown in FIG. 16A, when the adjustment knob 106 is rotated counterclockwise by a predetermined angle from the intermediate position by the user, the adjustment knob 106 retracts along the adjustment screw 107, so that the adjustment knob attached to the adjustment knob 106 is adjusted. The link 260 also retracts. Along with this, as shown in FIG. 16B, the slide shaft 261 slides and retracts along the guide groove 104c of the first mounting portion 104a and the guide groove 252a of the first side wall 252, whereby the first mounting portion 104a is moved. It is pushed down along the guide groove 104c and the long hole 104e. As shown in FIG. 16C, the mounting table 104 moves in a direction away from the wedge plate 112 with the fulcrum shaft 101 as a fulcrum. That is, the height of the mounting table 104 on the front end side is lowered. As a result, the upper surface 112c of the wedge plate 112 comes to a position protruding from the mounting surface 104h, and the sixth protrusion amount H6 is larger than the fourth protrusion amount H4.

  As described above, in the second embodiment, the operation of the adjustment knob 106 moves the adjustment link 260 in the front-rear direction, and the movement of the adjustment link 260 in the front-rear direction is converted into the movement of the mounting table 104 in the up-down direction. .. Accordingly, the protrusion amount of the wedge plate 112 with respect to the mounting table 104 can be changed according to the type of the sheet bundle P or the staple S, and thus the type of the sheet bundle P of which the staple is to be removed, the type of the staple S, and the binding position are different. Even in this case, the optimum protrusion amount of the wedge plate 112 with respect to the mounting table 104 can be set according to various situations such as the type of the paper and the staple S. As a result, it is possible to prevent damage to the paper when removing the staples and failure to remove the staples.

<Third Embodiment>
In the third embodiment, the projection position of the wedge plate 112 with respect to the mounting table 104 is changed by directly changing the mounting position of the wedge plate 112. It should be noted that components and operations common to those of the staple removing device 100A according to the first embodiment are denoted by common reference numerals, and detailed description thereof will be omitted.

[Example of Configuration of Staple Removing Device 100C]
17 is a perspective view of a staple removing device 100C according to the third embodiment, FIG. 18 is a perspective view of an adjusting mechanism 200C according to the third embodiment, and FIG. 19 is an adjusting mechanism according to the third embodiment. 20C is an exploded perspective view of 200C, FIG. 20A is a sectional view of an adjusting mechanism 200C according to the third embodiment, and FIG. 20B is an enlarged view of a main part of FIG. 20A.

  As shown in FIG. 17, the mounting table 104 is provided with an adjustment hole 104g for inserting a tool into the housing 102 and operating the adjustment screws 284 and 285. The adjustment hole 104g is an opening having an outer shape that penetrates the mounting table 104 in the thickness direction and includes two adjustment screws 284 and 285. The adjustment hole 104g may be configured by two openings according to the number of the adjustment screws 284 and 285.

  As shown in FIGS. 18, 19, 20A, and 20B, the staple removing mechanism unit 110C includes a wedge plate holder 114, a wedge plate 112, and an adjusting mechanism 200C. The adjusting mechanism 200C includes a wave spring 280, a wedge plate support 282, and adjusting screws 284 and 285.

  Two insertion holes 114a and 114b (see FIG. 19) through which the adjusting screws 284 and 285 are inserted are formed in the top surface portion 114c of the wedge plate holder 114. A wave spring 280 is provided between the wedge plate 112 and the wedge plate holder 114. The wave spring 280 is configured to urge the wedge plate 112 and the wedge plate holder 114 away from each other to always widen the gap C (see FIG. 20B) between the wedge plate 112 and the wedge plate holder 114. As a result, rattling of the wedge plate 112 and the like can be prevented. The wave spring 280 is formed with two insertion holes 280a and 280b through which the adjusting screws 284 and 285 are inserted.

  Two insertion holes 112a and 112b (see FIG. 19) into which the adjusting screws 284 and 285 are fitted are formed on the base end side of the wedge plate 112. A wedge plate support 282 that supports the wedge plate 112 is provided on the lower surface side of the wedge plate 112. The wedge plate support 282 is formed with two screw holes 282a and 282b (see FIG. 19) into which the adjusting screws 284 and 285 are fitted.

  The adjusting screws 284 and 285 are inserted into the insertion holes 114a and 114b of the wedge plate holder 114, the insertion holes 280a and 280b of the wave spring 280, and the insertion holes 112a and 112b of the wedge plate 112 from the top surface portion 114c side of the wedge plate holder 114. Then, the wedge plate supports 282 are fitted into the screw holes 282a and 282b. Thus, in the staple removing mechanism 110C, the wedge plate holder 114, the wave spring 280, the wedge plate 112, and the wedge plate support 282 are integrally configured.

[Operation Example of Staple Removing Device 100C]
With reference to FIGS. 20A and 20B, etc., the operation of changing the mounting position of the wedge plate 112 with respect to the mounting table 104 will be described.

  When changing the protrusion amount of the wedge plate 112 with respect to the surface of the mounting table 104, a tool is inserted into the adjusting hole 104g of the mounting table 104 shown in FIG. 17, and the adjusting screws 284 and 285 are rotated clockwise or counterclockwise by the tool. turn.

  For example, when the adjusting screws 284 and 285 are rotated clockwise by a tool, the wedge plate 112 and the wedge plate support 282 move in the direction approaching the wedge plate holder 114 against the elastic force of the wave spring 280, and the wedge plate 112 and The gap C with the wedge plate holder 114 becomes narrower. That is, the mounting position of the wedge plate 112 with respect to the mounting table 104 rises. Thereby, the amount of protrusion of the wedge plate 112 from the surface of the mounting table 104 can be increased.

  On the other hand, for example, when the adjusting screws 284 and 285 are turned counterclockwise by a tool, the wedge plate 112 and the wedge plate support 282 move in a direction away from the wedge plate holder 114, and the wedge plate 112 and the wedge plate holder 114 are separated from each other. The gap C becomes wider. That is, the mounting position of the wedge plate 112 with respect to the mounting table 104 is lowered. Thereby, the amount of protrusion of the wedge plate 112 from the surface of the mounting table 104 can be reduced.

  As described above, in the third embodiment, the mounting position of the wedge plate 112 is directly changed by operating the adjusting screws 284 and 285. Thus, the protrusion amount of the wedge plate 112 with respect to the mounting table 104 can be changed according to the type of the sheet bundle and the staples, and thus the type and the binding position of the sheets and the staples of the sheet bundle P targeted for staple removal may differ. Also, the optimum protrusion amount of the wedge plate 112 with respect to the mounting table 104 can be set according to various situations such as types of sheets and staples. As a result, it is possible to prevent damage to the sheet when removing the staples and failure to remove the staples.

100A, 100B, 100C Staple removing device 104 Mounting table (mounting section)
104h Placement surface 106 Adjustment knob (operation part)
112 Wedge plate (insertion part)
112c Upper surface 114 Wedge plate holder (engagement part)
118 Wedge plate shaft (engagement part)
122 Adjustment fulcrum shaft (first part moving part)
140 Pull-down link 140b First part 140c Second part 200A, 200C Adjustment mechanism (insertion part adjustment part)
200B adjustment mechanism (mounting section adjustment section)
205 drive unit (insertion unit moving unit)
206 Motor 260 Adjustment link F Rotating fulcrum part (rotating shaft)
P Paper bundle Pa First paper surface (paper surface)
S Staple Sa Crown part

Claims (7)

A staple removing device for removing staples from a bundle of sheets bound by staples including a crown portion and a pair of leg portions,
A placement unit having a placement surface on which the sheet bundle can be placed;
The sheet bundle is placed on the placement surface so as to face the sheet surface on the side where the crown portion of the sheet bundle is exposed, and is inserted between the crown portion and the sheet surface. With possible inserts,
An insertion unit moving unit that is connected to the insertion unit and moves the insertion unit along the paper surface;
A staple removing device, which is connected to the insertion portion and includes an insertion portion adjustment portion that is capable of adjusting the position of the bundle of sheets in the thickness direction with respect to the placement surface of the insertion portion. The insertion section adjusting section,
The base end,
With the tip,
A rotation shaft rotatably arranged between the base end portion and the tip end portion,
A first portion that is located between the base end portion and the rotation shaft and that rotates in a counterclockwise direction when the rotation shaft rotates in a direction away from the mounting surface.
A second portion that is located between the rotation shaft and the tip portion and that moves in a direction approaching the mounting surface when the rotation shaft rotates counterclockwise;
A first part moving part that moves the first part in a direction away from the placement surface,
The staple removing device according to claim 1, wherein the insertion portion is connected to the second portion. The staple removing device according to claim 2, wherein the first portion moving portion has an eccentric shaft, is configured to be rotatable around the eccentric shaft, and an outer peripheral surface of the eccentric shaft contacts the first portion. The second portion has an elongated hole extending from the rotating shaft toward the tip portion,
The staple removing device according to claim 2, wherein the insertion portion has an engagement portion that engages with the elongated hole. The staple removing device according to claim 3 or 4, wherein the first moving unit is configured to be rotatable by an operator. A staple removing device for removing staples from a bundle of sheets bound by staples including a crown portion and a pair of leg portions,
A placement unit having a placement surface on which the sheet bundle can be placed;
The sheet bundle is placed on the placement surface so as to face the sheet surface on the side where the crown portion of the sheet bundle is exposed, and is inserted between the crown portion and the sheet surface. With possible inserts,
A moving unit that is connected to the insertion unit and moves the insertion unit along the paper surface;
A staple removing device, which is connected to the placing unit and is capable of adjusting the position of the stack of sheets in the thickness direction with respect to the inserting unit of the placing surface. The staple removing device according to claim 6, wherein the placing section adjusting section is configured to be adjustable by an operator.