JP6451256B2 - Binding device - Google Patents

Description

  The present invention relates to a binding device that binds a binding object with staples made of a non-metallic material such as paper.

  2. Description of the Related Art Conventionally, a binding device called a stapler has been proposed in which staples made of a non-metallic material made of a soft material such as paper instead of metal staples are used to bind paper binding objects. The binding device using metal staples is configured to penetrate the binding object with a single staple, whereas the binding device using staples made of a non-metallic material with a soft material such as paper is used with a binding object. The insertion blade portion for forming the hole portion is provided on the binding object, the hole portion is formed in the binding object by the insertion blade portion, and the leg portion of the staple is passed through the hole portion.

  In a binding device that uses staples made of a soft material and a non-metallic material having such an insertion blade portion, the staple is held between the two insertion blade portions, and the staple is attached to the binding object together with the insertion blade portion. The pair of leg portions of the staple are respectively passed through the binding object.

  Conventionally, as a configuration for holding a staple in an insertion blade portion, a configuration in which a staple is held in a circular arc shape between a pair of insertion blade portions has been proposed (for example, see Patent Document 1).

  Further, as a configuration for holding the staple on the insertion blade portion, a configuration has been proposed in which a protrusion is provided on the inner surface of the insertion blade portion, and the tip of the leg portion of the staple is held by this protrusion (for example, Patent Document 2). And Patent Document 3).

  Further, the inner surface of the pair of insertion blade portions is provided with a step having a shape in which the inner width is widened from the distal end side toward the proximal end side, and the step of the inner surface side is used to support the leg portion of the staple, and the pair of insertion blade portions. On the outer surface of the insertion blade portion, a step having a shape in which the outer width is widened from the distal end side toward the proximal end side is provided, and the hole portion of the binding target object that penetrates the leg portion is formed in the outer direction by the step on the outer surface side. (See, for example, Patent Document 4).

Japanese Patent No. 4066032 Japanese Patent No. 4830478 Japanese Patent No. 4952133 JP 2013-166206 A

  In the configuration described in Patent Document 1, an inward cut is made from the hole through which the staple penetrates. And since the hole part of a binding target object is pushed and expanded in the state which piled up the leg part of the staple on the insertion blade part, a big turn arises inside a hole part. Accordingly, there is a convex portion that deforms the leg portion or the like in the portion that is bound by the leg portion, and the appearance of the staple bound with the binding object is deteriorated. Further, the bulk when the binding objects are stacked is increased.

  Also in Patent Document 2 and Patent Document 3, the hole portion of the binding object is pushed and expanded in a state where the leg portion of the staple is superimposed on the insertion blade portion, so that the protrusion provided inside the insertion blade portion passes through the binding object. In this case, the binding object is turned inside by adding the thickness of the leg portion to the blade thickness inside the hole portion. For this reason, the appearance of the staple bound with the binding object is deteriorated.

  Furthermore, in Patent Document 4, the hole portion of the binding object is pushed and expanded in a state where the leg portion of the staple is overlapped with the insertion blade portion, so that when the step provided on the outside of the insertion blade portion passes through the binding object. In the binding object, the thickness of the leg portion is added to the blade thickness on the outer side of the hole portion, thereby causing a curl. For this reason, the appearance of the staple bound with the binding object is deteriorated. Further, the bulk when the binding objects are stacked is increased.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a stapler that binds a binding object and a binding device that can improve the appearance of the vicinity of the bound part. .

In order to solve the above-described problems, the present invention is a non-soft material including a crown portion and a pair of legs that are bent so as to be substantially parallel to one direction from both longitudinal ends of the crown portion. A binding device that binds an object to be bound with staples made of a metal material, which is opposed to each other at an interval corresponding to the outer width of the crown portion of the staple, supports the staple, and binds a through hole through which the leg portion of the staple is inserted. A pair of punching blades to be opened on the object; a support recess in which a leg portion of the staple enters from an inner surface of the punching blade; and a bending portion that bends the pair of leg portions of the staple inserted through the binding object in a direction along the binding object; the provided support recess with an opening penetrating from an interior surface to an exterior surface of the punching blade, on the outside each of the pair of the punching blade, is configured by providing a guide portion for guiding the legs of the staple , Extrusion extruding legs of the supported staple support recess from the support recess is a binding device which projects inwardly of the blade punching through the support recess.
The present invention also relates to a staple made of a non-metallic material, which is a soft material having a pair of legs that are bent so as to be substantially parallel to one direction from both ends in the longitudinal direction of the crown and the crown. A binding device for binding a binding object, which is opposed to each other at an interval corresponding to the outer width of a crown portion of the staple, supports the staple, and opens a through hole through which the leg portion of the staple is inserted in the binding object. A punching blade, a support recess in which the leg portion of the staple enters from the inner surface of the punching blade, and a bending portion that bends the pair of leg portions of the staple inserted through the binding object in a direction along the binding object. The guide leg part is provided with a guide part for guiding the leg part of the staple, and an opening penetrating from the inner surface to the outer surface of the punching blade is provided, and the staple leg part supported by the support concave part is pushed out from the support concave part. Extrusion unit is a binding device which projects inwardly of the blade punching through the support recess.
Furthermore, the present invention relates to a staple made of a non-metallic material, which is a soft material having a pair of legs that are bent so as to be substantially parallel to one direction from both ends in the longitudinal direction of the crown and the crown. A binding device for binding a binding object, which is opposed to each other at an interval corresponding to the outer width of a crown portion of the staple, supports the staple, and opens a through hole through which the leg portion of the staple is inserted in the binding object. A punching blade, a support recess in which the leg portion of the staple enters from the inner surface of the punching blade, and a bending portion that bends the pair of leg portions of the staple inserted through the binding object in a direction along the binding object. The binding device includes an extrusion hole in the support recess through which the extrusion portion that pushes out the leg portion of the staple supported by the support recess from the support recess.

  In the present invention, when the staple is supported between the pair of punching blades, the leg portion of the staple does not protrude from the inner surface of the punching blade. The punching blade allows the leg portion to be inserted into the binding object with the staple leg portion inserted in the support recess, and therefore, in the operation of inserting the leg portion into the binding object, the through-hole is formed according to the thickness of the punching blade. Is expanded.

  In the present invention, the size of the through-hole that is opened in the binding object for inserting the leg portion of the staple is the thickness of the punching blade. As a result, the size of the turn-up portion formed when the through-hole is expanded is reduced, the appearance is good, and the appearance of the staple bound to the binding object and the vicinity of the bound portion can be improved. Further, the bulk when the binding objects are stacked can be reduced.

It is a front view which shows the principal part structure of the binding apparatus of 1st Embodiment. It is a top view which shows an example of the punching blade with which the binding apparatus of 1st Embodiment was equipped. It is a block diagram which shows an example of the staple of this Embodiment. It is sectional drawing which shows an example of the state which bound the binding paper with the staple of this Embodiment. It is a front view which shows the operation example of the binding apparatus of 1st Embodiment. It is a front view which shows the operation example of the binding apparatus of 1st Embodiment. It is a front view which shows the operation example of the binding apparatus of 1st Embodiment. It is a front view which shows the operation example of the binding apparatus of 1st Embodiment. It is a front view which shows the operation example of the binding apparatus of 1st Embodiment. It is a front view which shows the operation example of the binding apparatus of 1st Embodiment. It is a front view which shows the principal part structure of the binding apparatus of 2nd Embodiment. It is a top view which shows an example of the punching blade with which the binding apparatus of 2nd Embodiment was equipped. It is a front view which shows the operation example of the binding apparatus of 2nd Embodiment. It is a front view which shows the operation example of the binding apparatus of 2nd Embodiment. It is a front view which shows the operation example of the binding apparatus of 2nd Embodiment. It is a front view which shows the operation example of the binding apparatus of 2nd Embodiment. It is a front view which shows the operation example of the binding apparatus of 2nd Embodiment. It is a front view which shows the operation example of the binding apparatus of 2nd Embodiment. It is a top view which shows the modification of the punching blade with which the binding apparatus of 2nd Embodiment was equipped. It is a front view which shows the principal part structure of the binding apparatus of 3rd Embodiment. It is a top view which shows an example of the punching blade with which the binding apparatus of 3rd Embodiment was equipped. It is a front view which shows the operation example of the binding apparatus of 3rd Embodiment. It is a front view which shows the operation example of the binding apparatus of 3rd Embodiment. It is a front view which shows the operation example of the binding apparatus of 3rd Embodiment. It is a front view which shows the operation example of the binding apparatus of 3rd Embodiment. It is a front view which shows the operation example of the binding apparatus of 3rd Embodiment. It is a front view which shows the operation example of the binding apparatus of 3rd Embodiment. It is a front view which shows the principal part structure of the binding apparatus of 4th Embodiment. It is a top view which shows an example of the punching blade with which the binding apparatus of 4th Embodiment was equipped. It is a front view which shows the operation example of the binding apparatus of 4th Embodiment. It is a front view which shows the operation example of the binding apparatus of 4th Embodiment. It is a front view which shows the operation example of the binding apparatus of 4th Embodiment. It is a front view which shows the operation example of the binding apparatus of 4th Embodiment. It is a front view which shows the operation example of the binding apparatus of 4th Embodiment. It is a front view which shows the operation example of the binding apparatus of 4th Embodiment. It is a front view which shows the principal part structure of the binding apparatus of 5th Embodiment. It is a front view which shows the operation example of the binding apparatus of 5th Embodiment. It is a front view which shows the operation example of the binding apparatus of 5th Embodiment. It is a front view which shows the operation example of the binding apparatus of 5th Embodiment. It is a front view which shows the operation example of the binding apparatus of 5th Embodiment.

  Hereinafter, embodiments of a binding device of the present invention will be described with reference to the drawings.

<Configuration example of the binding device according to the first embodiment>
FIG. 1 is a front view showing a main configuration of the binding device according to the first embodiment, and FIG. 2 is a plan view showing an example of a punching blade provided in the binding device according to the first embodiment. FIG. 3 is a configuration diagram illustrating an example of a staple according to the present embodiment, and FIG. 4 is a cross-sectional view illustrating an example of a state in which binding sheets are bound with the staple according to the present embodiment. First, the configuration of the staple 10 of the present embodiment will be described with reference to FIGS. 3 and 4.

  The staple 10 is a soft material having a predetermined thickness and is made of a non-metallic material. In the present embodiment, the staple 10 is made of paper, but may be made of a resin film or sheet instead of paper.

  The staple 10 is bent so that both sides in the longitudinal direction have a predetermined length and are substantially parallel to the first direction, whereby a crown portion 10a is formed and leg portions 10b are formed at both ends of the crown portion 10a. The The staple 10 is formed with a tip portion 10c having a tapered tip end of the leg portion 10b.

  In the staple 10, when the length of the leg portion 10 b is ½ or more of the length of the crown portion 10 a, an adhesive portion 10 d is provided on the back surface of one tip portion 10 c. Further, in the staple 10, in the configuration in which the length of the leg portion 10 b is less than ½ of the length of the crown portion 10 a, an adhesive portion 10 d is provided on the back surface of both the tip portions 10 c.

  In the staple 10, the leg portions 10b are inserted into the through holes P10 formed in the sheet bundle P in accordance with the interval between the pair of leg portions 10b, and the pair of leg portions 10b inserted into the sheet bundle P are respectively formed on the sheet. It is bent along the bundle P in the second direction.

  In the configuration in which the length of the leg portion 10b is ½ or more of the length of the crown portion 10a, as shown in FIG. 4A, the leg portion 10b on the side where the adhesive portion 10d is not provided is the sheet bundle P. Then, the leg portion 10b on the side where the adhesive portion 10d is provided is bent along the sheet bundle P in the second direction. Thereby, one leg part 10b and the other leg part 10b are piled up, and leg parts 10b are bonded together by the adhesion part 10d.

  Further, in the configuration in which the length of the leg portion 10b is less than ½ of the length of the crown portion 10a, each leg portion 10b extends along the sheet bundle P in the second direction as shown in FIG. The leg portions 10b are bonded to the back surface of the sheet bundle P by the bonding portion 10d in a state where the leg portions 10b do not overlap each other.

  Next, the binding device 1A according to the first embodiment will be described with reference to the drawings. The binding device 1A includes a placement unit 2A on which a sheet bundle P that is a binding target is placed. The binding device 1A supports the staple 10 and is supported by the punching blade 3A for opening the through hole P10 through which the staple 10 is inserted into the sheet bundle P placed on the placement portion 2A, and the punching blade 3A. A driving unit 4A that presses the staple 10 and inserts the leg portion 10b of the staple 10 together with the punching blade 3A into the sheet bundle P is provided.

  Further, the binding device 1A includes an extruding portion 5A for extruding the leg portion 10b of the staple inserted through the sheet bundle P from the extraction blade 3A, and a bending portion 6A for bending the leg portion 10b extruded from the extraction blade 3A by the extruding portion 5A. Prepare.

  The placement portion 2A includes an opening 20A through which the punching blade 3A that supports the staple 10 passes. The punching blade 3A and the drive unit 4A are provided on the upper side, which is one side of the placement unit 2A, facing the position where the opening 20A is provided. Further, the extruded portion 5A and the bent portion 6A are provided on the lower side, which is the other side of the placement portion 2A, facing the position where the opening 20A is provided.

  In the binding device 1A, the displacement of an operation member (not shown) is transmitted to the punching blade 3A and the driving unit 4A, the pushing unit 5A and the bending unit 6A, and the punching blade 3A, the driving unit 4A and the bending unit 6A Move up and down along the direction. Moreover, 5 A of extrusion parts move to the horizontal direction along the mounting part 2A which is a direction which cross | intersects 3 A of punching blades.

  In the operation of binding the sheet bundle P with the staple 10, the binding device 1A moves from the standby position to the insertion position when the extraction blade 3A and the drive unit 4A move in the direction of arrow D, and the extraction blade 3A and the drive unit 4A move. After the pushing portion 5A moves from the standby position to the preliminary folding position by the operation of moving the pushing portion 5A in the arrow S direction at the predetermined timing of moving to the insertion position, the folding portion 6A moves from the standby position to the binding position by moving the arrow U direction. Move to.

  The punching blade 3A opposes at an interval L1 corresponding to the outer width L10 of the crown portion 10a in which the thicknesses of the left and right leg portions 10b are combined. The punching blade 3A includes a blade portion 30A that opens a through hole P10 in the sheet bundle P at a lower end portion along the longitudinal direction. Further, the punching blade 3 </ b> A includes a support recess 31 </ b> A that supports the leg portion 10 b of the staple 10.

  The supporting concave portion 31A is configured by providing a penetrating opening through which the leg portion 10b of the staple 10 enters the punching blade 3A. The support recess 31A is configured such that the length L2 along the longitudinal direction of the punching blade 3A is slightly longer than the length L20 of the leg 10b in the longitudinal direction. Further, the support recess 31A is configured such that the length L3 along the width direction of the punching blade 3A is slightly longer than the length L30 of the leg portion 10b in the width direction.

  When the staple 10 is loaded between the pair of punching blades 3A, the leg portion 10b enters the support recess 31A, and the tip portion 10c of the leg portion 10b is a support portion 32A constituted by the lower end side of the support recess 31A. Supported.

  The drive unit 4A is provided between the pair of punching blades 3A and is in contact with the crown portion 10a of the staple 10 supported by the punching blades 3A. The drive unit 4A presses the crown portion 10a of the staple 10 by an operation of moving in the direction of arrow D together with the punching blade 3A.

  The binding apparatus 1A includes a guide portion 33A that guides the leg portion 10b of the staple 10 supported by the punching blade 3A. The guide portion 33A is provided outside each of the pair of punching blades 3A so as to substantially contact the outer surface of the punching blade 3A, and extends along the longitudinal direction of the punching blade 3A. By moving the punching blade 3A along the guide portion 33A, the leg portion 10b of the staple 10 entering the support recess 31A is prevented from protruding to the outside of the punching blade 3A. For this reason, 31 A of support recessed parts also exhibit the function as an extrusion hole.

  The extruding portion 5A is provided at a position facing the support recess 31A outside the punching blade 3A moved to the insertion position, and protrudes to the inside of the punching blade 3A through the support recess 31A when moved in the arrow S direction. When the punching blade 3A supporting the staple 10 is moved to the insertion position and the pushing portion 5A is moved from the standby position to the pre-bending position, the leg portion 10b of the staple 10 supported by the support recess 31A is pressed from the lateral direction, The tip portion 10c is bent inward. Thereby, a bending induction gap is formed between the inner surface 34A of the punching blade 3A and the leg portion 10b.

  The bent portion 6A includes a first bent portion 60R provided to face one punching blade 3A, a second bent portion 60L provided to face the other punching blade 3A, and a first bent portion 60R. A third bent portion 60C provided between the second bent portions 60L is provided.

  The bent portion 6A is configured such that the first bent portion 60R, the second bent portion 60L, and the third bent portion 60C can move independently in the vertical direction, and are sequentially bound from the standby position at a predetermined timing. Move to position.

  When the first bent portion 60R is moved from the standby position to the binding position, the leg portion 10b of the staple 10 supported by the support recess 31A of the one extraction blade 3A is pushed out by the operation of the push-out portion 5A. The guide portion 61R enters the bending guide gap formed between the inner surface 34A of the punching blade 3A and the leg portion 10b. The first bent portion 60R includes a pressing surface 62R that presses the leg portion 10b pushed up by the guide portion 61R against the sheet bundle P.

  The guiding portion 61R is configured by a surface inclined in a direction along the leg portion 10b extruded by the extrusion portion 5A, and the upper end side of the first bent portion 60R is configured in a tapered shape. The pressing surface 62R is configured by a plane that is substantially orthogonal to the moving direction of the first bent portion 60R.

  The second bent portion 60L has the same configuration as that of the first bent portion 60R, and the leg portion 10b of the staple 10 supported by the support recess 31A of the other punching blade 3A by the operation of moving from the standby position to the binding position. Is provided with a guide portion 61L that enters the bending guide gap formed between the inner surface 34A of the punching blade 3A and the leg portion 10b by being pushed out by the operation of the push-out portion 5A. The second bent portion 60L includes a pressing surface 62L that presses the leg portion 10b pushed up by the guide portion 61L against the sheet bundle P.

  The third bent portion 60C has a pressing surface 62C that presses one leg portion 10b pushed up by the first bent portion 60R and the other leg portion 10b pushed up by the second bent portion 60L against the sheet bundle P. Is provided. The pressing surface 62C is configured by a surface that is substantially orthogonal to the moving direction of the third bent portion 60C.

<Operation example of the binding device according to the first embodiment>
5 to 10 are front views showing an operation example of the binding device according to the first embodiment. Next, in the binding device 1A according to the first embodiment, the length of the leg portion 10b is set to the crown portion. An operation of binding the sheet bundle P using the staple 10 having a length equal to or more than ½ of the length of 10a will be described.

  In the standby state, as shown in FIG. 5, the sheet bundle P is placed on the placement portion 2A. Further, the staple 10 is loaded between the pair of punching blades 3A.

  When the staple 10 is loaded between the pair of punching blades 3A, the crown portion 10a of the staple 10 comes into contact with the drive unit 4A. Also, one leg 10b enters the support recess 31A of one punching blade 3A, and the tip 10c of the leg 10b is supported by the support 32A. Further, the other leg 10b enters the support recess 31A of the other punching blade 3A, and the tip 10c of the leg 10b is supported by the support 32A.

  In the operation of inserting the staple 10 into the sheet bundle P, as shown in FIG. 6, the punching blade 3A and the drive unit 4A that support the staple 10 move from the standby position Pa1 to the insertion position Pa2 in the direction of arrow D.

  The blade 30A of the punching blade 3A opens the through hole P10 in the sheet bundle P in accordance with the distance between the pair of leg portions 10b by the movement of the punching blade 3A and the drive unit 4A to the insertion position Pa2. The staple 10 is lowered together with the punching blade 3A and the leg portion 10b is supported by the support recess 31A when the crown portion 10a is pressed by the driving unit 4A, and therefore the through hole P10 of the sheet bundle P together with the punching blade 3A. Is inserted. When the punching blade 3A and the drive unit 4A move to the insertion position Pa2, the crown portion 10a of the stapler is held in a state of being pressed against the surface of the sheet bundle P by the drive unit 4A.

  Since the punching blade 3A allows the leg portion 10b to be inserted into the sheet bundle P with the leg portion 10b of the staple 10 inserted in the support recess 31A, the punching blade 3A and the leg portion 10b do not pass through the sheet bundle P in a form that overlaps. . Thus, in the operation of inserting the leg portion 10b through the sheet bundle P, the through hole P10 is expanded according to the thickness of the punching blade 3A to form the turned-up portion P11.

  In the operation of pre-bending the leg portion 10b of the staple 10, as shown in FIG. 7, the push-out portion 5A moves from the standby position Pc1 to the pre-bending position Pc2 in the arrow S direction. The extruding portion 5A presses the leg portion 10b of the staple 10 supported by the support recessed portion 31A from the lateral direction by the operation of moving from the standby position Pc1 to the pre-bending position Pc2 with respect to the punching blade 3A moved to the insertion position. And bend inward. Thereby, a bending induction gap t1 is formed between the inner surface 34A of the punching blade 3A and the leg portion 10b.

  In the operation of bending one leg portion 10b of the staple 10, as shown in FIG. 8, the first bent portion 60R moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction. The first bending portion 60R moves from the standby position Pb1 to the binding position Pb2 with respect to the one extraction blade 3A that has moved to the insertion position, and the guide portion 61R enters the bending guide gap t1.

  And the operation | movement which the 1st bending part 60R moves to the arrow U direction WHEREIN: The guide part 61R pushes up, bending the leg part 10b further inside. When the first bent portion 60R moves to the binding position Pb2, the leg portion 10b pushed up by the guide portion 61R is pressed against the sheet bundle P by the pressing surface 62R. Thereby, the one leg part 10b which penetrated the sheet | seat bundle P is bend | folded in the direction which follows the back surface of the sheet | seat bundle P.

  In the operation of bending the other leg portion 10b of the staple 10, as shown in FIG. 9, the second bent portion 60L moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction.

  The second bending portion 60L moves from the standby position Pb1 to the binding position Pb2 with respect to the other extraction blade 3A that has moved to the insertion position, and in the same manner as the first bending portion 60R, the second bending portion 60L enters the bending guide gap t1. Guide part 61L enters.

  Then, the second bent portion 60L is moved in the direction of the arrow U, and is pushed up while further bending the leg portion 10b inward. When the second bent portion 60L moves to the binding position Pb2, the leg portion 10b pushed up by the guide portion 61L is pressed against the sheet bundle P by the pressing surface 62L. As a result, the other leg portion 10b through which the sheet bundle P is inserted is bent in a direction along the back surface of the sheet bundle P.

  In the operation of bonding the leg portions 10b of the staple 10 together, as shown in FIG. 10, the third bent portion 60C moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction. When the third bent portion 60C moves to the binding position Pb2, an overlapping portion of one leg portion 10b pushed up by the first bent portion 60R and the other leg portion 10b pushed up by the second bent portion 60L. The sheet bundle P is pressed by the pressing surface 62C.

  As a result, as shown in FIG. 4A, the one leg portion 10 b and the other leg portion 10 b are overlapped so that the leg portions 10 b are bonded together by the adhesive portion 10 d, and the sheet bundle P is bound by the staple 10. It is done.

  In the binding device 1A according to the first embodiment, the punching blade 3A allows the leg 10b to be inserted into the sheet bundle P with the leg 10b of the staple 10 inserted in the support recess 31A. In the operation of inserting the bundle P, the through hole P10 is expanded according to the thickness of the punching blade 3A to form the turn-up portion P11.

  Thereby, the size of the through hole P10 opened in the sheet bundle P for inserting the leg portion 10b of the staple 10 is only the thickness of the punching blade 3A. Accordingly, the size of the turned-up portion P11 is reduced, the appearance is good, and the appearance of the staple 10 bound with the sheet bundle P and the vicinity of the bound portion can be improved. Further, the bulk when the sheet bundles P are stacked can be reduced.

  The thickness of the punching blade 3A only needs to be able to support the leg portion 10b of the staple 10 entering the support recess 31A, and may be about the same as or slightly thicker than the thickness of the staple 10. Thereby, the magnitude | size of the turning part P11 can be made small.

<Configuration example of the binding device according to the second embodiment>
FIG. 11 is a front view illustrating a configuration of a main part of the binding device according to the second embodiment, and FIG. 12 is a plan view illustrating an example of a punching blade provided in the binding device according to the second embodiment. Next, the binding device 1B according to the second embodiment will be described with reference to the drawings. Here, in the binding device 1B, the placement unit 2A, the drive unit 4A, the push-out unit 5A, and the bending unit 6A may have the same configuration as the binding device 1A of the first embodiment, and are denoted by the same reference numerals. Detailed description of the configuration is omitted.

  The punching blade 3B opposes at an interval L1 corresponding to the outer width L10 of the crown portion 10a in which the thicknesses of the left and right leg portions 10b are combined. The punching blade 3B includes a blade portion 30B that opens a through hole P10 in the sheet bundle P at a lower end portion along the longitudinal direction. The punching blade 3 </ b> B includes a support recess 31 </ b> B that supports the leg portion 10 b of the staple 10.

  The support concave portion 31B includes a support portion 32B that supports the distal end portion 10c of the leg portion 10b, and a guide portion 33B that guides the leg portion 10b, and is provided with an opening through which the leg portion 10b of the staple 10 enters the punching blade 3B. Composed.

  The support portion 32B is configured by a lower end side of the support recess 31B on the inner surface 34B side of the punching blade 3B. The guide portion 33B is configured such that a portion on the outer surface side of the punching blade 3B protrudes upward along the longitudinal direction of the punching blade 3B in the support portion 32B, and a step is provided on the support portion 32B.

  The support recess 31B is configured such that the length L2 along the longitudinal direction of the punching blade 3B is slightly longer than the length L20 of the leg 10b in the longitudinal direction. Further, the support recess 31B is configured such that the length L3 along the width direction of the punching blade 3B is slightly longer than the length L30 of the leg portion 10b in the width direction. Further, the support recess 31B is configured such that the length L4 to the guide portion 33B is shorter than the length L10 of the leg portion 10b.

  When the staple 10 is loaded between the pair of punching blades 3B, the leg portion 10b enters the support recess 31B, and the tip portion 10c of the leg portion 10b is supported by the support portion 32B. Further, the outside of the leg portion 10b supported by the support portion 32B is guided by the guide portion 33B and is prevented from projecting to the outside of the punching blade 3B.

<Operation example of the binding device according to the second embodiment>
FIGS. 13 to 18 are front views showing an operation example of the binding device of the second embodiment. Next, in the binding device 1B of the second embodiment, the length of the leg portion 10b is changed to the crown portion. An operation of binding the sheet bundle P using the staple 10 having a length equal to or more than ½ of the length of 10a will be described.

  In the standby state, as shown in FIG. 13, the sheet bundle P is placed on the placement portion 2A. Further, the staple 10 is loaded between the pair of punching blades 3B.

  When the staple 10 is loaded between the pair of punching blades 3B, the crown portion 10a of the staple 10 comes into contact with the drive unit 4A. Also, one leg 10b enters the support recess 31B of one punching blade 3B, and the tip 10c of the leg 10b is supported by the support 32B. Further, the other leg portion 10b enters the support recess 31B of the other punching blade 3B, and the tip portion 10c of the leg portion 10b is supported by the support portion 32B. The outside of the leg portion 10b supported by the support portion 32B is guided by the guide portion 33B, and is prevented from projecting to the outside of the punching blade 3B.

  In the operation of inserting the staple 10 into the sheet bundle P, as shown in FIG. 14, the punching blade 3B and the drive unit 4A that support the staple 10 move from the standby position Pa1 to the insertion position Pa2 in the direction of arrow D.

  The blade portion 30B of the punching blade 3B opens the through hole P10 in the sheet bundle P in accordance with the distance between the pair of leg portions 10b by the movement of the punching blade 3B and the drive unit 4A to the insertion position Pa2. The staple 10 is lowered together with the punching blade 3B and the leg portion 10b is supported by the support recess 31B when the crown portion 10a is pressed by the driving unit 4A, and thus the through hole P10 of the sheet bundle P together with the punching blade 3B. Is inserted. When the punching blade 3B and the driving unit 4A move to the insertion position Pa2, the crown portion 10a of the stapler is held in a state of being pressed against the surface of the sheet bundle P by the driving unit 4A.

  Since the punching blade 3B allows the leg portion 10b to be inserted into the sheet bundle P with the leg portion 10b of the staple 10 being inserted into the support recess 31B, the punching blade 3B and the leg portion 10b are not inserted into the sheet bundle P. . Thereby, in the operation | movement which penetrates the leg part 10b to the sheet | seat bundle P, the through-hole P10 is expanded according to the thickness of the punching blade 3B, and the turning part P11 is formed.

  In the operation of pre-bending the leg portion 10b of the staple 10, as shown in FIG. 15, the push-out portion 5A moves from the standby position Pc1 to the pre-bending position Pc2 in the arrow S direction. The extruding portion 5A passes through the support recess 31B by the operation of moving from the standby position Pc1 to the pre-bending position Pc2 with respect to the punching blade 3B moved to the insertion position, and the leg portion of the staple 10 supported by the support recess 31B. 10b is pressed from the side and bent inward. Thereby, a bending induction gap t1 is formed between the inner surface 34B of the punching blade 3B and the leg portion 10b. For this reason, the support recessed part 31B also exhibits a function as an extrusion hole.

  In the operation of bending one leg portion 10b of the staple 10, as shown in FIG. 16, the first bent portion 60R moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction. The first bending portion 60R moves from the standby position Pb1 to the binding position Pb2 with respect to the one extraction blade 3B that has moved to the insertion position, and the guide portion 61R enters the bending guide gap t1.

  And the operation | movement which the 1st bending part 60R moves to the arrow U direction WHEREIN: The guide part 61R pushes up, bending the leg part 10b further inside. When the first bent portion 60R moves to the binding position Pb2, the leg portion 10b pushed up by the guide portion 61R is pressed against the sheet bundle P by the pressing surface 62R. Thereby, the one leg part 10b which penetrated the sheet | seat bundle P is bend | folded in the direction which follows the back surface of the sheet | seat bundle P.

  In the operation of bending the other leg portion 10b of the staple 10, as shown in FIG. 17, the second bent portion 60L moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction.

  The second bending portion 60L moves from the standby position Pb1 to the binding position Pb2 with respect to the other extraction blade 3B that has moved to the insertion position. Guide part 61L enters.

  Then, the second bent portion 60L is moved in the direction of the arrow U, and is pushed up while further bending the leg portion 10b inward. When the second bent portion 60L moves to the binding position Pb2, the leg portion 10b pushed up by the guide portion 61L is pressed against the sheet bundle P by the pressing surface 62L. As a result, the other leg portion 10b through which the sheet bundle P is inserted is bent in a direction along the back surface of the sheet bundle P.

  In the operation of bonding the leg portions 10b of the staple 10 together, as shown in FIG. 18, the third bent portion 60C moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction. When the third bent portion 60C moves to the binding position Pb2, an overlapping portion of one leg portion 10b pushed up by the first bent portion 60R and the other leg portion 10b pushed up by the second bent portion 60L. The sheet bundle P is pressed by the pressing surface 62C.

  As a result, as shown in FIG. 4A, the one leg portion 10 b and the other leg portion 10 b are overlapped so that the leg portions 10 b are bonded together by the adhesive portion 10 d, and the sheet bundle P is bound by the staple 10. It is done.

  Also in the binding device 1B of the second embodiment, the punching blade 3B allows the leg portion 10b to be inserted into the sheet bundle P in a state where the leg portion 10b of the staple 10 is inserted into the support recess 31B. In the operation of inserting the bundle P, the through hole P10 is expanded according to the thickness of the punching blade 3B to form the turned-up portion P11.

  Thereby, the size of the through hole P10 opened in the sheet bundle P for inserting the leg portion 10b of the staple 10 is only the thickness of the punching blade 3B. Accordingly, the size of the turned-up portion P11 is reduced, the appearance is good, and the appearance of the staple 10 bound with the sheet bundle P and the vicinity of the bound portion can be improved. Further, the bulk when the sheet bundles P are stacked can be reduced.

  Further, since the guide blade 33B is provided in the punching blade 3B, it is not necessary to separately provide a member for preventing the leg portion 10b of the staple 10 from projecting to the outside of the punching blade 3B, and the number of parts can be reduced.

  FIG. 19 is a plan view illustrating a modification of the punching blade provided in the binding device according to the second embodiment. In the punching blade 3B described with reference to FIG. 12, the guide portion 33B is provided by projecting the entire support portion 32B. However, as shown in FIG. 19, one of the support portions 32B is aligned with the position of the leg portion 10b. It is good also as a structure which makes a part protrude and provides the guide part 33B.

<Configuration example of the binding device according to the third embodiment>
FIG. 20 is a front view showing the main configuration of the binding device of the third embodiment, and FIG. 21 is a plan view showing an example of the punching blade provided in the binding device of the third embodiment. Next, a binding device 1C according to the third embodiment will be described with reference to the drawings. Here, in the binding device 1C, the placement unit 2A, the drive unit 4A, the push-out unit 5A, and the bending unit 6A may have the same configuration as the binding device 1A of the first embodiment, and are denoted by the same reference numerals. Detailed description of the configuration is omitted.

  The punching blade 3C opposes at an interval L1 corresponding to the outer width L10 of the crown portion 10a in which the thicknesses of the left and right leg portions 10b are combined. The punching blade 3C includes a blade portion 30C that opens a through hole P10 in the sheet bundle P at a lower end portion along the longitudinal direction. Further, the punching blade 3 </ b> C includes a support recess 31 </ b> C that supports the leg portion 10 b of the staple 10.

  The support concave portion 31B includes a support portion 32C that supports the distal end portion 10c of the leg portion 10b, and an extrusion hole 33C into which the extrusion portion 5A enters, and an opening through which the leg portion 10b of the staple 10 enters the inner surface 34C of the punching blade 3C. Composed.

  32 C of support parts are comprised by the edge | side of the lower end of 31 C of support recessed parts in the inner surface 34C side of 3 C of punching blades. The extrusion hole 33C is configured by providing an opening that penetrates a part of the portion where the support recess 31C is provided in the punching blade 3C.

  The support recess 31C is configured such that the length L2 along the longitudinal direction of the punching blade 3C is slightly longer than the length L20 of the leg portion 10b in the longitudinal direction. Further, the support recess 31C is configured such that the length L3 along the width direction of the punching blade 3C is slightly longer than the length L30 of the leg portion 10b in the width direction.

  When the staple 10 is loaded between the pair of punching blades 3C, the leg 10b enters the support recess 31C, and the tip 10c of the leg 10b is supported by the support 32C. The support recess 31C does not penetrate the punching blade 3C except for the portion where the extrusion hole 33C is provided, and the leg portion 10b is prevented from protruding outside the punching blade 3C.

<Operation example of the binding device of the third embodiment>
22 to 27 are front views showing an operation example of the binding device according to the third embodiment. Next, in the binding device 1C according to the third embodiment, the length of the leg portion 10b is changed to a crown portion. An operation of binding the sheet bundle P using the staple 10 having a length equal to or more than ½ of the length of 10a will be described.

  In the standby state, as shown in FIG. 22, the sheet bundle P is placed on the placement portion 2A. Further, the staple 10 is loaded between the pair of punching blades 3C.

  When the staple 10 is loaded between the pair of punching blades 3C, the crown portion 10a of the staple 10 comes into contact with the drive unit 4A. Also, one leg 10b enters the support recess 31C of one punching blade 3C, and the tip 10c of the leg 10b is supported by the support 32C. Furthermore, the other leg 10b enters the support recess 31C of the other punching blade 3C, and the tip 10c of the leg 10b is supported by the support 32C. The support recess 31C does not penetrate the punching blade 3C except for the portion where the extrusion hole 33C is provided, and the leg portion 10b is prevented from protruding outside the punching blade 3C.

  In the operation of inserting the staple 10 into the sheet bundle P, as shown in FIG. 23, the punching blade 3C and the drive unit 4A that support the staple 10 move from the standby position Pa1 to the insertion position Pa2 in the arrow D direction.

  The blade portion 30C of the punching blade 3C opens the through hole P10 in the sheet bundle P in accordance with the distance between the pair of leg portions 10b by the movement of the punching blade 3C and the drive unit 4A to the insertion position Pa2. The staple 10 is lowered together with the punching blade 3C and the leg portion 10b is supported by the support recess 31C when the crown portion 10a is pressed by the driving unit 4A, and therefore the through hole P10 of the sheet bundle P together with the punching blade 3C. Is inserted. When the punching blade 3C and the drive unit 4A move to the insertion position Pa2, the crown portion 10a of the stapler is held in a state of being pressed against the surface of the sheet bundle P by the drive unit 4A.

  Since the punching blade 3C allows the leg portion 10b to be inserted into the sheet bundle P with the leg portion 10b of the staple 10 inserted in the support recess 31C, the punching blade 3C and the leg portion 10b are not inserted into the sheet bundle P in a form that overlaps. . Thereby, in the operation | movement which penetrates the leg part 10b to the sheet | seat bundle P, the through-hole P10 is expanded according to the thickness of 3 C of cutting blades, and the turning part P11 is formed.

  In the operation of pre-bending the leg portion 10b of the staple 10, as shown in FIG. 24, the push-out portion 5A moves from the standby position Pc1 to the pre-bending position Pc2 in the arrow S direction. The extruding portion 5A moves from the standby position Pc1 to the pre-bending position Pc2 with respect to the punching blade 3C moved to the insertion position, and protrudes from the extruding hole 33C to the support recess 31C and is supported by the support recess 31C. The leg 10b is pressed in the lateral direction and bent inward. As a result, a bending guide gap t1 is formed between the inner surface 34C of the punching blade 3C and the leg portion 10b.

  In the operation of bending one leg portion 10b of the staple 10, as shown in FIG. 25, the first bent portion 60R moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction. The first bending portion 60R moves from the standby position Pb1 to the binding position Pb2 with respect to the one cutting blade 3C that has moved to the insertion position, and the guide portion 61R enters the bending guide gap t1.

  And the operation | movement which the 1st bending part 60R moves to the arrow U direction WHEREIN: The guide part 61R pushes up, bending the leg part 10b further inside. When the first bent portion 60R moves to the binding position Pb2, the leg portion 10b pushed up by the guide portion 61R is pressed against the sheet bundle P by the pressing surface 62R. Thereby, the one leg part 10b which penetrated the sheet | seat bundle P is bend | folded in the direction which follows the back surface of the sheet | seat bundle P.

  In the operation of bending the other leg portion 10b of the staple 10, as shown in FIG. 26, the second bent portion 60L moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction.

  The second bending portion 60L moves from the standby position Pb1 to the binding position Pb2 with respect to the other cutting blade 3C that has moved to the insertion position, and in the same manner as the first bending portion 60R, the second bending portion 60L Guide part 61L enters.

  Then, the second bent portion 60L is moved in the direction of the arrow U, and is pushed up while further bending the leg portion 10b inward. When the second bent portion 60L moves to the binding position Pb2, the leg portion 10b pushed up by the guide portion 61L is pressed against the sheet bundle P by the pressing surface 62L. As a result, the other leg portion 10b through which the sheet bundle P is inserted is bent in a direction along the back surface of the sheet bundle P.

  In the operation of bonding the leg portions 10b of the staple 10 together, as shown in FIG. 27, the third bent portion 60C moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction. When the third bent portion 60C moves to the binding position Pb2, an overlapping portion of one leg portion 10b pushed up by the first bent portion 60R and the other leg portion 10b pushed up by the second bent portion 60L. The sheet bundle P is pressed by the pressing surface 62C.

  As a result, as shown in FIG. 4A, the one leg portion 10 b and the other leg portion 10 b are overlapped so that the leg portions 10 b are bonded together by the adhesive portion 10 d, and the sheet bundle P is bound by the staple 10. It is done.

  Even in the binding device 1C according to the third embodiment, the punching blade 3C allows the leg 10b to be inserted into the sheet bundle P with the leg 10b of the staple 10 inserted in the support recess 31C. In the operation of inserting the bundle P, the through hole P10 is expanded according to the thickness of the punching blade 3C to form the turned-up portion P11.

  Thereby, the size of the through hole P10 opened in the sheet bundle P for inserting the leg portion 10b of the staple 10 is only the thickness of the punching blade 3C. Accordingly, the size of the turned-up portion P11 is reduced, the appearance is good, and the appearance of the staple 10 bound with the sheet bundle P and the vicinity of the bound portion can be improved. Further, the bulk when the sheet bundles P are stacked can be reduced.

  Further, the support recess 31C does not penetrate the punching blade 3C except for the portion where the extrusion hole 33C is provided, and the leg portion 10b is prevented from protruding outside the punching blade 3C. It is not necessary to separately provide a member for preventing the portion 10b from protruding outside the punching blade 3C, and the number of parts can be reduced.

<Configuration Example of Binding Device of Fourth Embodiment>
FIG. 28 is a front view showing the main configuration of the binding device of the fourth embodiment, and FIG. 29 is a plan view showing an example of the punching blade provided in the binding device of the fourth embodiment. Next, a binding device 1D according to a fourth embodiment using the staple 10 in which the length of the leg portion 10b is less than ½ of the length of the crown portion 10a will be described with reference to the drawings. Here, in the binding device 1D, the placement unit 2A, the drive unit 4A, the push-out unit 5A, and the bending unit 6A may have the same configuration as the binding device 1A of the first embodiment, and are denoted by the same reference numerals. Detailed description of the configuration is omitted.

  The punching blade 3D opposes at an interval L1 corresponding to the outer width L10 of the crown portion 10a in which the thicknesses of the left and right leg portions 10b are combined. The punching blade 3D includes a blade portion 30D that opens a through hole P10 in the sheet bundle P at a lower end portion along the longitudinal direction. Further, the punching blade 3 </ b> D includes a support recess 31 </ b> D that supports the leg portion 10 b of the staple 10.

  The support concave portion 31D includes a support portion 32D that supports the tip portion 10c of the leg portion 10b that is less than ½ of the length of the crown portion 10a, and an extrusion hole 33D into which the extrusion portion 5A is inserted, and an inner surface 34D of the extraction blade 3D. Are provided with openings into which the leg portions 10b of the staples 10 are inserted.

  The support portion 32D is configured by the lower end side of the support recess 31D on the inner surface 34D side of the punching blade 3D. The extrusion hole 33D is configured by providing an opening that penetrates a part of the part where the support recess 31D is provided in the punching blade 3D.

  The support recess 31D is configured such that the length L2 along the longitudinal direction of the punching blade 3D is slightly longer than the length L20 of the leg portion 10b in the longitudinal direction. The support recess 31D is configured such that the length L3 along the width direction of the punching blade 3D is slightly longer than the length L30 of the leg portion 10b in the width direction.

  When the staple 10 is loaded between the pair of punching blades 3D, the leg portion 10b enters the support recessed portion 31D, and the distal end portion 10c of the leg portion 10b is supported by the support portion 32D. The support recess 31D does not penetrate the punching blade 3D except for the portion where the extrusion hole 33D is provided, and the leg portion 10b is prevented from protruding outside the punching blade 3D.

<Operation example of the binding device according to the fourth embodiment>
30 to 35 are front views showing an operation example of the binding device of the fourth embodiment. Next, in the binding device 1D of the fourth embodiment, the length of the leg portion 10b is set to the crown portion. The operation of binding the sheet bundle P using the staple 10 having a length less than ½ of the length of 10a will be described.

  In the standby state, as shown in FIG. 30, the sheet bundle P is placed on the placement portion 2A. Further, the staple 10 is loaded between the pair of punching blades 3D.

  When the staple 10 is loaded between the pair of punching blades 3D, the crown portion 10a of the staple 10 comes into contact with the driving unit 4A. Also, one leg 10b enters the support recess 31D of one punching blade 3D, and the tip 10c of the leg 10b is supported by the support 32D. Further, the other leg 10b enters the support recess 31D of the other punching blade 3D, and the tip 10c of the leg 10b is supported by the support 32D. The support recess 31D does not penetrate the punching blade 3C except for the portion where the extrusion hole 33D is provided, and the leg portion 10b is prevented from projecting outside the punching blade 3D.

  In the operation of inserting the staple 10 into the sheet bundle P, as shown in FIG. 31, the punching blade 3D and the driving unit 4A that support the staple 10 move from the standby position Pa1 to the insertion position Pa2 in the direction of arrow D.

  With the operation in which the punching blade 3D and the drive unit 4A move to the insertion position Pa2, the blade portion 30D of the punching blade 3D opens the through hole P10 in the sheet bundle P in accordance with the interval between the pair of leg portions 10b. The staple 10 is lowered together with the punching blade 3D and the leg portion 10b is supported by the support recess 31D when the crown portion 10a is pressed by the driving unit 4A, and thus the through hole P10 of the sheet bundle P together with the punching blade 3D. Is inserted. When the punching blade 3D and the drive unit 4A move to the insertion position Pa2, the crown portion 10a of the stapler is held in a state of being pressed against the surface of the sheet bundle P by the drive unit 4A.

  The punching blade 3D allows the leg portion 10b to be inserted into the sheet bundle P in a state where the leg portion 10b of the staple 10 is inserted into the support recessed portion 31D. Therefore, the punching blade 3D and the leg portion 10b do not pass through the sheet bundle P. . Thereby, in the operation | movement which penetrates the leg part 10b to the sheet | seat bundle P, the through-hole P10 is expanded according to the thickness of the extraction blade 3D, and the turning part P11 is formed.

  In the operation of pre-bending the leg portion 10b of the staple 10, as shown in FIG. 32, the push-out portion 5A moves from the standby position Pc1 to the pre-bending position Pc2 in the arrow S direction. The pushing portion 5A moves from the standby position Pc1 to the pre-bending position Pc2 with respect to the punching blade 3D moved to the insertion position, and protrudes from the pushing hole 33D to the support recess 31D and is supported by the support recess 31D. The leg 10b is pressed in the lateral direction and bent inward. Thereby, a bending induction gap t1 is formed between the inner surface 34D of the punching blade 3D and the leg portion 10b.

  In the operation of bending one leg portion 10b of the staple 10, the bent portion 6A moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction as shown in FIG. The first bending portion 60R moves from the standby position Pb1 to the binding position Pb2 with respect to the one extraction blade 3D that has moved to the insertion position, and the guide portion 61R enters the bending guide gap t1.

  And the operation | movement which the 1st bending part 60R moves to the arrow U direction WHEREIN: The guide part 61R pushes up, bending the leg part 10b further inside. When the first bent portion 60R moves to the binding position Pb2, the leg portion 10b pushed up by the guide portion 61R is pressed against the sheet bundle P by the pressing surface 62R. Thereby, the one leg part 10b which penetrated the sheet | seat bundle P is bent so that the back surface of the sheet | seat bundle P may be followed.

  In the operation of bending the other leg portion 10b of the staple 10, as shown in FIG. 34, the second bent portion 60L moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction.

  The second bending portion 60L moves from the standby position Pb1 to the binding position Pb2 with respect to the other extraction blade 3D that has moved to the insertion position, and in the same manner as the first bending portion 60R, the second bending portion 60L enters the bending guide gap t1. Guide part 61L enters.

  Then, the second bent portion 60L is moved in the direction of the arrow U, and is pushed up while further bending the leg portion 10b inward. When the second bent portion 60L moves to the binding position Pb2, the leg portion 10b pushed up by the guide portion 61L is pressed against the sheet bundle P by the pressing surface 62L. As a result, the other leg 10b through which the sheet bundle P is inserted is bent along the back surface of the sheet bundle P.

  In the operation of bonding the leg portion 10b of the staple 10 to the sheet bundle P, as shown in FIG. 35, the third bent portion 60C moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction. When the third bent portion 60C moves to the binding position Pb2, the one leg portion 10b pushed up by the first bent portion 60R and the other leg portion 10b pushed up by the second bent portion 60L are pressed against the pressing surface 62C. Is pressed against the sheet bundle P.

  As a result, as shown in FIG. 4B, the leg portions 10b are bonded to the back surface of the sheet bundle P by the bonding portion 10d in a state where the leg portions 10b do not overlap each other.

  Also in the binding device 1D according to the fourth embodiment, the punching blade 3D allows the leg 10b to be inserted into the sheet bundle P in a state where the leg 10b of the staple 10 is inserted into the support recess 31D. In the operation of inserting the bundle P, the through hole P10 is expanded according to the thickness of the punching blade 3D to form the turned-up portion P11.

  Thereby, the size of the through hole P10 opened in the sheet bundle P for inserting the leg portion 10b of the staple 10 is only the thickness of the punching blade 3D. Accordingly, the size of the turned-up portion P11 is reduced, the appearance is good, and the appearance of the staple 10 bound with the sheet bundle P and the vicinity of the bound portion can be improved. Further, the bulk when the sheet bundles P are stacked can be reduced.

  Further, the support recess 31D does not penetrate the punching blade 3D except for the portion where the extrusion hole 33D is provided, and the leg portion 10b is prevented from protruding outside the punching blade 3D. There is no need to separately provide a member for preventing the portion 10b from protruding outside the punching blade 3D, and the number of parts can be reduced.

<Configuration Example of Binding Device of Fifth Embodiment>
FIG. 36 is a front view showing the main configuration of the binding device of the fifth embodiment. Next, referring to each drawing, the length of the leg portion 10b is set to 1 / the length of the crown portion 10a. A binding apparatus 1E according to a fifth embodiment that uses staples 10 of less than 2 will be described. Here, in the binding device 1E, the placement unit 2A, the punching blade 3D, the drive unit 4A, and the extrusion unit 5A may have the same configuration as the binding device 1D of the fourth embodiment, and are denoted by the same reference numerals. Detailed description of the configuration is omitted.

  In the bent portion 6B, the first bent portion 63R, the second bent portion 63L, and the third bent portion 63C are integrally moved from the standby position to the binding position.

  The first bending portion 63R is a guide portion that enters a bending guide gap formed between the punching blade 3D and the leg portion 10b by being pushed out from the supporting recess 31D of the one punching blade 3D by the leg portion 10b pushing portion 5A. 64R is provided. The first bent portion 63R includes a pressing surface 65R that presses the leg portion 10b pushed up by the guide portion 64R against the sheet bundle P.

  The second bent portion 63L has the same configuration as that of the first bent portion 63R, and is pushed out by the leg 10b pushing portion 5A from the support recess 31D of the other punched blade 3D, whereby the cutting blade 3D and the leg portion 10b. The guide part 64L which enters into the bending guide gap formed between is provided. The second bent portion 63L includes a pressing surface 65L that presses the leg portion 10b pushed up by the guiding portion 64L against the sheet bundle P.

  The third bent portion 63C has a pressing surface 65C that presses one leg 10b pushed up by the first bent portion 63R and the other leg 10b pushed up by the second bent portion 63R against the sheet bundle P. Is provided.

<Operation Example of Binding Device of Fifth Embodiment>
37 to 40 are front views showing an operation example of the binding device of the fifth embodiment. Next, in the binding device 1E of the fifth embodiment, the length of the leg portion 10b is changed to the crown portion. The operation of binding the sheet bundle P using the staple 10 having a length less than ½ of the length of 10a will be described.

  In the standby state, as shown in FIG. 37, the sheet bundle P is placed on the placement portion 2A. Further, the staple 10 is loaded between the pair of punching blades 3D.

  When the staple 10 is loaded between the pair of punching blades 3D, the crown portion 10a of the staple 10 comes into contact with the driving unit 4A. Also, one leg 10b enters the support recess 31D of one punching blade 3D, and the tip 10c of the leg 10b is supported by the support 32D. Further, the other leg 10b enters the support recess 31D of the other punching blade 3D, and the tip 10c of the leg 10b is supported by the support 32D. The support recess 31D does not penetrate the punching blade 3C except for the portion where the extrusion hole 33D is provided, and the leg portion 10b is prevented from projecting outside the punching blade 3D.

  In the operation of inserting the staple 10 into the sheet bundle P, as shown in FIG. 38, the punching blade 3D and the driving unit 4A that support the staple 10 move from the standby position Pa1 to the insertion position Pa2 in the direction of arrow D.

  With the operation in which the punching blade 3D and the drive unit 4A move to the insertion position Pa2, the blade portion 30D of the punching blade 3D opens the through hole P10 in the sheet bundle P in accordance with the interval between the pair of leg portions 10b. The staple 10 is lowered together with the punching blade 3D and the leg portion 10b is supported by the support recess 31D when the crown portion 10a is pressed by the driving unit 4A, and thus the through hole P10 of the sheet bundle P together with the punching blade 3D. Is inserted. When the punching blade 3D and the drive unit 4A move to the insertion position Pa2, the crown portion 10a of the stapler is held in a state of being pressed against the surface of the sheet bundle P by the drive unit 4A.

  The punching blade 3D allows the leg portion 10b to be inserted into the sheet bundle P in a state where the leg portion 10b of the staple 10 is inserted into the support recessed portion 31D. Therefore, the punching blade 3D and the leg portion 10b do not pass through the sheet bundle P. . Thereby, in the operation | movement which penetrates the leg part 10b to the sheet | seat bundle P, the through-hole P10 is expanded according to the thickness of the extraction blade 3D, and the turning part P11 is formed.

  In the operation of pre-bending the leg portion 10b of the staple 10, as shown in FIG. 39, the push-out portion 5A moves from the standby position Pc1 to the pre-bending position Pc2 in the arrow S direction. The pushing portion 5A moves from the standby position Pc1 to the pre-bending position Pc2 with respect to the punching blade 3D moved to the insertion position, and protrudes from the pushing hole 33D to the support recess 31D and is supported by the support recess 31D. The leg 10b is pressed in the lateral direction and bent inward. Thereby, a bending induction gap t1 is formed between the inner surface 34D of the punching blade 3D and the leg portion 10b.

  In the operation of bending the leg portion 10b of the staple 10, the bending portion 6B moves from the standby position Pb1 to the binding position Pb2 in the arrow U direction as shown in FIG.

  In the first bending portion 63R, the guide portion 64R enters the bending guide gap t1 by the operation in which the bending portion 6B moves from the standby position Pb1 to the binding position Pb2 with respect to the punching blade 3D moved to the insertion position. Similarly to the first bent portion 63R, the second bent portion 63L moves the bent portion 6B from the standby position Pb1 to the binding position Pb2, and the guide portion 64L enters the bending guide gap t1.

  Then, by the movement of the bent portion 6B in the direction of the arrow U, the first bent portion 63R and the second bent portion 63L push up while bending the leg portion 10b further inward. When the bent portion 6B moves to the binding position Pb2, the first bent portion 63R presses the leg portion 10b pushed up by the guide portion 64L against the sheet bundle P by the pressing surface 65L. The second bent portion 63R presses the leg portion 10b pushed up by the guide portion 64R against the sheet bundle P by the pressing surface 65L. Further, the third bent portion 63C has a pressing surface 65C on the distal end side of one leg portion 10b pushed up by the first bent portion 63L and the other leg portion 10b pushed up by the second bent portion 63R. Is pressed against the sheet bundle P.

  As a result, as shown in FIG. 4B, the leg portions 10b are bonded to the back surface of the sheet bundle P by the bonding portion 10d in a state where the leg portions 10b do not overlap each other.

  Also in the binding device 1E of the fifth embodiment, the punching blade 3D allows the leg 10b to be inserted into the sheet bundle P with the leg 10b of the staple 10 inserted in the support recess 31D. In the operation of inserting the bundle P, the through hole P10 is expanded according to the thickness of the punching blade 3D to form the turned-up portion P11.

  Thereby, the size of the through hole P10 opened in the sheet bundle P for inserting the leg portion 10b of the staple 10 is only the thickness of the punching blade 3D. Accordingly, the size of the turned-up portion P11 is reduced, the appearance is good, and the appearance of the staple 10 bound with the sheet bundle P and the vicinity of the bound portion can be improved. Further, the bulk when the sheet bundles P are stacked can be reduced.

  Further, the support recess 31D does not penetrate the punching blade 3D except for the portion where the extrusion hole 33D is provided, and the leg portion 10b is prevented from protruding outside the punching blade 3D. There is no need to separately provide a member for preventing the portion 10b from protruding outside the punching blade 3D, and the number of parts can be reduced.

  Further, in the binding device 1E according to the fifth embodiment, since the bent portion 6B can be realized with an integral structure, the number of parts can be reduced and the cost can be reduced.

  The present invention is applied to a binding device that is operated by a human force or a driving force such as a motor, and binds a binding object with a staple made of a non-metallic material such as paper.

  1A to 1E: Binding device, 2A: Placement part, 20A ... Opening part, 3A-3D ... Extraction blade, 30A-30D ... Blade part, 31A-31D ... Support recess , 32A to 32D ... support part, 4A ... drive part, 5A ... extrusion part, 6A, 6B ... bending part

Claims (4)

Binding for binding a binding object with a staple made of a non-metallic material made of a soft material having a pair of legs that are bent so as to be substantially parallel to one direction from both ends in the longitudinal direction of the crown and the crown. A device,
A pair of punching blades facing each other at an interval corresponding to the outer width of the crown portion of the staple, supporting the staple, and opening a through-hole through which the leg portion of the staple is inserted in the binding object;
A support recess into which the leg of the staple enters from the inner surface of the punching blade;
A pair of leg portions of the staple inserted through the binding object, and a bending portion that bends the binding object in a direction along the binding object;
The support recess is provided with an opening penetrating from the inner surface of the punching blade to the outer surface, and provided with guide portions for guiding the leg portions of the staples on the outer sides of the pair of punching blades,
The binding device , wherein an extruding portion that pushes out a leg portion of the staple supported by the support recess from the support recess passes through the support recess and protrudes to the inside of the punching blade . Binding for binding a binding object with a staple made of a non-metallic material made of a soft material having a pair of legs that are bent so as to be substantially parallel to one direction from both ends in the longitudinal direction of the crown and the crown. A device,
A pair of punching blades facing each other at an interval corresponding to the outer width of the crown portion of the staple, supporting the staple, and opening a through-hole through which the leg portion of the staple is inserted in the binding object;
A support recess into which the leg of the staple enters from the inner surface of the punching blade;
A pair of leg portions of the staple inserted through the binding object, and a bending portion that bends the binding object in a direction along the binding object;
The support concave portion includes a guide portion that guides a leg portion of the staple, and is configured by providing an opening penetrating from the inner surface to the outer surface of the punching blade.
An extruding portion that pushes out the leg portion of the staple supported by the support recess from the support recess protrudes to the inside of the punching blade through the support recess.
A binding device characterized by that. The support recess includes a support portion that supports a tip end portion of a leg portion of the staple, and the guide portion restricts the protrusion of the leg portion supported by the support portion to the outer surface side of the punching blade. The binding device according to claim 1 or 2 . Binding for binding a binding object with a staple made of a non-metallic material made of a soft material having a pair of legs that are bent so as to be substantially parallel to one direction from both ends in the longitudinal direction of the crown and the crown. A device,
A pair of punching blades facing each other at an interval corresponding to the outer width of the crown portion of the staple, supporting the staple, and opening a through-hole through which the leg portion of the staple is inserted in the binding object;
A support recess into which the leg of the staple enters from the inner surface of the punching blade;
A pair of leg portions of the staple inserted through the binding object, and a bending portion that bends the binding object in a direction along the binding object;
The punching blade includes an extrusion hole in the support recess through which an extrusion portion that pushes out a leg portion of the staple supported by the support recess from the support recess.
A binding device characterized by that.

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