JPH1160046A - Paper sheet binding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper sheet binding machine in which a staple device is positioned in an initial condition and is fixed, and a bundle of sheets is moved and stopped by a sheet bundle conveying device so as to carry out binding at a high speed. SOLUTION: A staple device 2 is moved on a conveying path composed of a guide groove in a straight part and a guide groove in a corner part, and is then positioned by means of a staple device feed belt 3 and a guide rod 4 so as to set a processing position where various processes such as corner binding, flat binding and reverse corner binding are carried out. The alignment between a sheet bundle binding position and the binding position for the staple device is adjusted by controlling the upward and downward motions of members including first and second stoppers 16, 20 and a feed-out roller 15, relative to a sheet bundle conveying belt 12 so that the bundle of sheets is moved to and stopped at a predetermined position, and then by pressing the rear end part of the bundle of sheets with the use of a retaining roller 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper binding machine for binding printed paper bundles.

[0002]

2. Description of the Related Art Generally, a printing machine or the like (copier) prints a required number of copies for each same page. When a sheet bundle printed for each page is collated by a collating machine to form a sheet bundle for each book, and the sheet bundle is bound, a bookbinding machine or a paper binding machine is provided for the sheet bundle. The sheet is transported to a position, and is appropriately bound by a bookbinding machine or a paper binding machine. In general, a thick book bundle is bound by a bookbinding machine, and a relatively thin bundle is bound by a paper binding machine. This paper binding machine may be used in connection with a printing machine via a paper stacking device in addition to the case where the paper binding machine is used in connection with a collating machine as described above.

FIGS. 36 (a), 36 (b) and 36 (c) are perspective views showing various binding positions of a sheet bundle. FIG. 36A shows corner binding performed at the corner 10a on the leading end side of the sheet bundle 10 in the transport direction, and FIG. 36B shows two locations on one side of the sheet bundle 10b and 10c. 36C shows the reverse binding at the position 10d on the rear end side of the sheet bundle 10 in the transport direction, and FIG. The size of the sheet bundle to be bound and the binding position are appropriately selected according to the purpose of use of the printed sheet bundle and the like.

FIG. 37 is a schematic perspective view showing an example of the configuration of a conventional paper binding machine. An example of performing the flat binding shown in FIG. 36B by the paper binding machine shown in FIG. 37 will be described. FIG.
In 7, 1 is a paper binding machine, 2 is a stapling device, 3
Reference numeral 4 denotes a stapling device feed belt, and 4 denotes a guide rod attached to the stapling device feed belt 3, and the tip is fixed to the bottom surface of the stapling device. Reference numeral 5 denotes a first drive motor for driving the stapling device feed belt. First
When the stapling device feed belt 3 is driven in the direction of arrow P by the drive motor 5, the guide rod 4 moves, and the stapling device 2 moves along a transport path including a guide groove (not shown).

The sheet bundle 10 includes a pressing roller 11, a sheet bundle feed belt 12, a second drive motor 13, and an intermediate belt 1.
4. The sheet is conveyed and stopped by each member of the feed roller 15, the stopper 16, and the like. The pressing roller 11 and the feed roller 15 are raised, and the second drive motor 13 is driven to transmit power to the sheet bundle feed belt 12 via the intermediate belt 14, and the sheet bundle feed belt 12 is moved in the direction of arrow Q. The sheet bundle 10 is driven to be conveyed, and stopped at the position of the stopper 16.

With the sheet bundle 10 stopped at the position of the stopper 16, the stapling apparatus 2 is set to the position A, and the first binding process is performed at the position 10c of the sheet bundle. Next, the stapling apparatus 2 is moved to the position B, and the binding process is performed at the position 10b of the sheet bundle. Alternatively, the stapling device is moved from the position B to the position A, and
The binding process is performed at the position of c.

[0007]

As described above, in the conventional paper binding machine, the stapling device is moved along the paper bundle feed belt in accordance with the size of the paper bundle and the set binding position. However, when the size of the sheet bundle becomes large and there are a plurality of locations that require binding processing such as flat binding, there is a problem that the moving distance of the stapling apparatus becomes long and it takes time to move the stapling apparatus, so that high-speed operation cannot be performed. Was. For this reason, there is a problem that it takes a long time to perform a binding process on a large number of sheet bundles, and the work efficiency is deteriorated.

The present invention has been made in view of the above-described problems, and has been configured to be capable of performing a binding process at a high speed regardless of the size of a sheet bundle and the position where a binding position is set. The purpose is to provide a binding machine.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to move a sheet binding machine to a sheet bundle feed belt for conveying a sheet bundle, and to move the sheet binding machine forward and backward on the sheet bundle feed belt in accordance with the size of the sheet bundle. And a first roller and a second roller which are disposed at different positions before and after with respect to the conveying direction of the sheet bundle feed belt, and which stop the conveyance of the sheet bundle by an ascending operation or a descending operation. A stop member, and the first,
A delivery roller provided between the second stop member and the pressing roller to pass the sheet bundle by the ascending operation and press the trailing end of the sheet bundle by the descending operation; and to move the transport path to perform the binding process on the sheet bundle. A stapling device; and an operation position setting means for setting a stapling operation position of the stapling device. The stapling device is moved by the operation position setting means according to the size of the sheet bundle and the binding position set for the sheet bundle. To set the binding processing operation position by selecting the ascending operation or descending operation of the first or second stop member, or by moving the delivery roller downward to move the sheet bundle feed belt. This is achieved by stopping the conveyed sheet bundle and performing a binding process on the sheet bundle at the set binding position.

With the above arrangement, after the operating position of the stapling device is set in the initial state, the sheet bundle is transported to a predetermined position by the paper bundle transport device without moving the stapling device, and the binding process is performed. Since the binding process is performed, the binding process can be performed at high speed regardless of the size of the sheet bundle and the binding process at any position, and the efficiency of the sheet binding operation is improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a paper binding machine according to the present invention will be described below with reference to the drawings. 1 is a schematic perspective view, FIG. 2 is a plan view, and FIG. 3 is a front view. FIG.
The same or corresponding parts are denoted by the same reference numerals. As shown in FIG. 2, a conveyance path of the straight portion guide groove 6a and the corner portion guide groove 6b is formed in parallel with the sheet bundle feed belt 12 and along the stapling device feed belt 3, and is shown in FIG. As described above, the protrusion 7 is formed on the bottom of the stapling apparatus 2.

When the first drive motor 5 is activated to drive the stapling apparatus feed belt 3, the guide rod moves in the direction P1, and the tip of the guide rod 4 is formed on the projection formed on the bottom surface of the stapling apparatus 2. 7, the position of the stapling device 2 is moved and positioned in the horizontal direction on the conveying path including the guide grooves. When the feed belt 3 for the stapling apparatus is rotated in the reverse direction, the guide rod 4 moves in the direction P2, and moves the stapling apparatus 2 in the conveying path from the opposite direction and positions it. When the stapling apparatus 2 is moved and positioned on the transport path, the stapling apparatus 2 performs a binding process on the sheet bundle at this position. Thus, the first drive motor 5,
The stapling device feed belt 3 and the guide bar 4 function as an operation position setting unit that adjusts the movement position of the stapling device 2 on the conveyance path and sets the operation position of the binding process.

On the sheet bundle feed belt 12, first, second, and third pressing rollers 11, 18, and 19 are provided. The second pressing roller 18 is installed so as to be moved in the front-rear direction on the sheet bundle feed belt 12 according to the size of the sheet bundle. In addition, first and second stoppers 16 and 20 as stop members are installed at different positions before and after with respect to the conveying direction of the sheet bundle feeding belt 12, and the sheet bundle is passed by moving up or down. Stop the conveyance of the sheet bundle.

The rotary plate 17b is attached to the output shaft of the second drive motor 13 and rotates in conjunction with the rotation of the second drive motor 13. Therefore, slits are provided at regular intervals along the circumference of the rotary plate 17b, and a light emitting unit and a light receiving unit are provided in the sheet bundle feed length detection sensor 17a. Rotating plate 17b
Can be detected. Since the circumferential length of the rotating plate 17b is known, by detecting the number of rotations of the rotating plate 17b, the moving distance of the sheet bundle feeding belt 12, that is, the sheet bundle 10 on the sheet bundle feeding belt 12, Feed length is detected.

FIGS. 4 and 5 illustrate an example in which corner binding is performed on a B4 size sheet bundle. FIG. 4 is a schematic plan view showing an arrangement relationship between the stapling device 2 and the sheet bundle 10 in an initial state, and FIG. 5 is a schematic front view of the sheet bundle conveying device in FIG. The sheet bundle transport device includes a sheet bundle feed belt 12, first, second, and third pressing rollers 11, 1
8, 19, the feed roller 15, the first and second stoppers 16 and 20, and the like.

As shown in FIGS. 4 and 5, in the initial state, the stapling device 2 is operated by the stapling device feed belt 3 and the guide rod 4, and the corner portion 6b of the guide groove is formed.
Are moved to a predetermined position in advance and positioned, and an operation position of the binding process is set. In the sheet bundle conveying device, the delivery roller 15 is moving up. Further, the first stopper 16 and the second stopper 20 are moving up. First, second and third pressing rollers 11, 1
8 and 19 are urged onto the sheet bundle feed belt 12 by spring pressure.

When the sheet detection sensor 21 detects that the sheet bundle 10 has been conveyed to the sheet bundle conveying device, the second drive motor 13 is started by the detection signal, and the sheet bundle feed belt is moved via the intermediate belt 14. 12 is driven. The sheet bundle 10 pushes up the first and second pressing rollers 11 and 18 and is conveyed by the sheet bundle feed belt 12 to the position of the first stopper 16. The transport distance of the sheet bundle 10 to the first stopper 16 can be confirmed by monitoring the detection signal of the sheet bundle feed length detection sensor 17a as described above. When the position reaches the position, the second motor 13 stops, the sheet bundle feed belt 12 stops, and the sheet bundle 10 also stops at this position.

The position of the stapling device 2 at the corner 6b of the guide groove, that is, the setting position of the stapling process of the stapling device 2, is set so that the stapling process is performed at a predetermined position in accordance with the size of the sheet bundle. The stop position of the sheet bundle 10 by the stopper 16 is set in consideration of the position of the guide groove of the stapling device 2 at the corner 6b and the sheet bundle 10
Is aligned with the binding position of the.

FIG. 6 is a schematic plan view showing an arrangement relationship between the stapling apparatus 2 and the sheet bundle 10 when performing the corner binding, and FIG. 7 is a schematic front view of the sheet bundle conveying device in FIG. . The leading end of the sheet bundle 10 reaches the first stopper 16 and the sheet bundle feed belt 12 stops. At this time, the second pressing roller 18 is positioned to press the rear end of the sheet bundle 10. Is positioned. As described above, the leading end of the sheet bundle 10 is stopped by the first stopper 16 and the second pressing roller 18 presses the rear end of the sheet bundle 10.
2, the binding process can be performed reliably and with a good finish.

FIG. 8 is a schematic plan view showing an arrangement relationship between the stapling apparatus 2 and the sheet bundle 10 after the corner binding is completed, and FIG. 9 is a schematic front view of the sheet bundle conveying device in FIG. . The sheet bundle feed belt 12 is driven, and the delivery roller 15 moves downward to rotate while pressing the sheet bundle 10 on the upper surface. At this time, the first stopper 16 moves downward, the third pressing roller 19 is pushed up, passes the sheet bundle 10, and discharges the sheet bundle 10 from the sheet bundle conveying device.

FIGS. 10 to 15 show a sheet bundle 1 of B5 size.
This is for explaining an example of performing the corner binding of 0.
Each of FIGS. 10 to 15 corresponds to FIGS. 4 to 9 which illustrate the corner binding process for the B4 size sheet bundle. 10 is FIG. 4, FIG. 11 is FIG. 5, and FIG.
2, FIG. 13 is FIG. 7, FIG. 14 is FIG. 8, and FIG.
Correspond to FIG.

As shown in FIG. 13, when the leading end of the sheet bundle 10 reaches the first stopper 16 and the sheet bundle feed belt 12 stops during the binding process, the second pressing roller 1
8 is positioned in the front-rear direction of the sheet bundle feed belt 12 so as to be at a position for pressing the rear end of the sheet bundle 10 of B5 size. In the initial state, the stapling apparatus 2 causes the sheet bundle 10 to be positioned at the corner 6b of the guide groove. And the operation position of the binding process is set. The operations of the other members of the sheet bundle conveying device in the initial state, the binding process, and the discharging operation are the same as those of the corner binding of the B4 size in FIGS. 4 to 9, and thus the detailed description is omitted.

FIGS. 16 to 21 illustrate an example in which reverse corner binding is performed on a B5 size sheet bundle. FIG. 16 shows an initial state, FIG. 18 shows a state of performing a binding process, and FIG. 20 shows a positional relationship between the stapling apparatus 2 and the sheet bundle conveying apparatus.
Shows the discharge state in a schematic plan view. 17, FIG. 19, and FIG. 21 correspond to FIG. 16, FIG.
FIG. 8 is a schematic front view of the sheet bundle conveying device of FIG. 20.

In the initial state shown in FIGS. 16 and 17, the stapling apparatus 2 moves the straight portion guide groove 6a in the horizontal direction, and the operation position of the binding process is set at a predetermined position.
The second pressing roller 18 is located at a position for pressing the rear end of the sheet bundle 10 when the leading end of the sheet bundle 10 of B5 size reaches the first stopper 16 and the sheet bundle feeding belt 12 stops. It is positioned so that it becomes.

As shown in FIGS. 18 and 19, the sheet bundle 10
Is stapled by the stapling device 2 at a position 10d of the sheet bundle 10 in a state where the leading end of the sheet bundle 10 reaches the first stopper 16 and stops, and the second pressing roller 18 presses the rear end of the sheet bundle 10. Is performed. At this time, the delivery roller 15 is moving up.

When the above-described binding process is performed, the sheet bundle 10 is discharged from the sheet bundle conveying device as shown in FIGS. At this time, since the first stopper 16 moves down to allow the sheet bundle to pass, the sheet bundle feed belt 12 is driven, and the feed roller 15 moves down to press the sheet bundle 10 on the upper surface. While rotating, the third pressing roller 19 is pushed up, and the sheet bundle 10 can be discharged from the sheet bundle conveying device.

FIGS. 22 to 27 illustrate an example in which reverse corner binding is performed on a B4 size sheet bundle. 22 to 27 respectively correspond to FIGS. 16 to 21 in which reverse corner binding is performed on a B5 size sheet bundle. That is, FIG. 22 and FIG. 16, FIG. 23 and FIG.
4, FIG. 18, FIG. 25 and FIG. 19, FIG. 26 and FIG.
And FIG. 21 correspond to each other. The difference from the reverse corner binding for the B5 size sheet bundle is that the operation positions of the first and second stoppers 16 and 20 are reversed.
The point is that the stapling device 2 is moved to a predetermined position by the linear portion guide groove 6a in accordance with the binding position of the B4 size sheet bundle 10, and is positioned to set the operation position of the binding process.

That is, in the initial state, as shown in FIG. 23, the first stopper 16 is moved down and the second stopper 20 is moved up. Next, when performing the binding process, as shown in FIG. 25, the leading end side of the sheet bundle 10 is passed through the first stopper 16 to reach the position of the second stopper 20, and the sheet is The bundle 10 is stopped. With the sheet bundle 10 stopped at the position of the second stopper 20, reverse corner binding is performed at the position 10d.

As described above, even if the size of the sheet bundle 10 is increased and the binding position is set to the rear side with respect to the sheet bundle conveyance direction, once the stapling apparatus 2 is positioned in the conveyance path in the initial state, the stapling apparatus 2 will thereafter be changed. Without moving along the transport path
A configuration in which the stop position of the sheet bundle 10 conveyed by the sheet bundle feed belt is adjusted by the second stopper 20, that is, the sheet bundle is conveyed in the sheet bundle conveying device, and the stop position is adjusted to perform the binding process. Therefore, a predetermined binding process can be performed on the sheet bundle at a high speed.

When the binding process for the sheet bundle 10 is completed, the sheet bundle 10 is discharged from the sheet bundle conveying device as shown in FIGS. At this time, the second stopper 20 moves up. The operation of discharging the other members of the sheet bundle conveying device is the same as the case of the binding process of the B5 size sheet bundle shown in FIGS. 20 and 21, the first stopper 16 moves down, and the sheet bundle passes. , The sheet bundle feed belt 12 is driven, and the feed rollers 1
When the sheet bundle 5 is lowered and rotated while pressing the upper surface of the sheet bundle 10, the sheet bundle 10 pushes up the third pressing roller 19 and is discharged from the sheet bundle conveying device.

FIGS. 28 to 35 illustrate an example of performing flat binding on a B4 size sheet bundle. FIG.
8, FIG. 30, FIG. 32 and FIG. 34 are schematic plan views, FIG.
FIGS. 31, 33, and 35 are schematic front views of the sheet bundle conveying device. In the initial state of FIGS. 28 and 29, the stapling apparatus 2 is moved to the linear portion guide groove 6a and is positioned at a predetermined position to set a binding processing position.

In the sheet bundle conveying device, the feed roller 15 is raised, and the third pressing roller 19 is urged against the sheet bundle feed belt 12 by spring pressure.
The stopper 16 and the second stopper 20 are raised. The second pressing roller 18 is used for the B4 size sheet bundle 1.
The horizontal position on the paper feed belt is preliminarily positioned so that when the leading end of the paper feed belt 12 reaches the first stopper 16 and the paper feed belt 12 is stopped, the rear end of the paper bundle 10 is pressed. I have.

FIGS. 30 and 31 show a state in which the sheet bundle feed belt 12 is driven to convey the sheet bundle 10 and its leading end is stopped at the position of the first stopper 16, and the stapling device 2 is moved to the position 10b of the sheet bundle 10. 2 shows an example in which the binding process is performed, and the rear end of the sheet bundle 10 is pressed by the second pressing roller 18.

FIGS. 32 and 33 show an example in which the stapling device 2 performs the binding process at the position 10c of the sheet bundle 10, and the third pressing roller 19 is pushed up by the sheet bundle 10, and the first stopper is provided. The setting state is changed by lowering the feed roller 16 and lowering the delivery roller 15, respectively. At this time, the leading end of the sheet bundle 10 is
6. Since the paper is further conveyed forward from the position of the third pressing roller 19 in the conveying direction, the paper bundle feed belt 12 is driven and the feed roller 15 is operated to move the paper bundle 10 to a predetermined position. Transport to

Next, the driving of the sheet bundle feed belt 12 and the feed roller 15 is stopped to stop the conveyance of the sheet bundle 10, and the feed roller 15 presses the rear end of the sheet bundle 10,
The binding process is performed at the position 10c. In this binding process, the stapling device 2 remains positioned at the default position of the transport path, and does not move the stapling device as in the related art.

FIGS. 34 and 35 show the discharged state of the sheet bundle 10, and the sheet bundle feed belt 12 and the feed roller 1 are shown.
5 is driven to discharge the sheet bundle 10 from the sheet bundle conveying device.

In the above description, an example in which various types of binding processing are performed on a B5 or B4 size sheet bundle has been described. However, in the present invention, the sheet size of the sheet bundle on which the binding processing is performed is arbitrarily set. Needless to say, the present invention can be applied to a binding process for a sheet bundle frequently used such as a size. Also, the example in which the binding position of the sheet bundle is one and two is described. However, it is possible to cope with a case where the binding position is set in more positions.

[0038]

As described above, in the present invention,
After the stapling device is positioned in the initial state and the operation position of the binding process is set, the position of the stapling device is fixed, and the sheet bundle is transported to a predetermined position by the paper bundle transport device and stopped to perform the binding process. Therefore, the binding process can be performed at a high speed regardless of the size of the sheet bundle and the binding process at any position of the sheet bundle, and the efficiency of sheet binding can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a paper binding machine according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the paper binding machine of FIG. 1;

FIG. 3 is a schematic front view of the paper binding machine of FIG. 1;

FIG. 4 is a schematic plan view of an initial state of an example in which corner binding processing is performed on B4 size paper.

FIG. 5 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 6 is a schematic plan view of an example of performing corner binding processing on B4 size paper.

FIG. 7 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 8 is a schematic plan view at the time of paper ejection in an example in which corner binding processing is performed on B4 size paper.

FIG. 9 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 10 is a schematic plan view of an initial state of an example in which corner binding processing is performed on B5 size paper.

FIG. 11 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 12 is a schematic plan view of an example of performing corner binding processing on B5 size paper.

FIG. 13 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 14 is a schematic plan view at the time of paper ejection in an example in which corner binding processing is performed on B5 size paper.

FIG. 15 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 16 is a schematic plan view of an initial state of an example in which reverse corner binding processing is performed on B5 size paper.

FIG. 17 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 18 is a schematic plan view of an example in which reverse corner binding processing is performed on B5 size paper.

FIG. 19 is a schematic front view of the sheet bundle transport device of the same process.

FIG. 20 is a schematic plan view at the time of paper discharge in an example in which reverse corner binding processing is performed on B5 size paper.

FIG. 21 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 22 is a schematic plan view of an initial state of an example in which reverse corner binding processing is performed on B4 size paper.

FIG. 23 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 24 is a schematic plan view of an example in which reverse corner binding processing is performed on B4 size paper.

FIG. 25 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 26 is a schematic plan view at the time of paper ejection in an example in which reverse corner binding processing is performed on B4 size paper.

FIG. 27 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 28 is a schematic plan view of an initial state of an example of performing flat binding processing on B4 size paper.

FIG. 29 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 30 is a schematic plan view of an example of performing flat binding processing on B4 size paper.

FIG. 31 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 32 is a schematic plan view of an example of performing flat binding processing at different positions on a B4 size sheet;

FIG. 33 is a schematic front view of the sheet bundle conveying device in the same process.

FIG. 34 is a schematic plan view at the time of discharging a sheet in an example of performing flat binding processing on a sheet of B4 size.

FIG. 35 is a schematic front view of the sheet bundle conveying device in the same process.

36A, 36B, and 36C are perspective views illustrating examples of binding positions of a sheet bundle.

FIG. 37 is a schematic perspective view of a conventional paper binding machine.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 paper binding machine 2 stapling device 3 stapling device feed belt 4 guide rod 5 first drive motor 6a linear portion guide groove 6b corner portion guide groove 7 protrusion 10 sheet bundle 11 first pressing roller 12 sheet bundle feed belt 13th No. 2 drive motor 14 Intermediate belt 15 Feed roller 16 First stopper 17a Sheet bundle feed length detection sensor 17b Rotating plate 18 Second press roller 19 Third press roller 20 Second stopper 21 Sheet bundle detect sensor

Claims (1)

[Claims] A sheet bundle feed belt for conveying a sheet bundle;
A pressing roller that moves in the front-rear direction on the sheet bundle feed belt according to the size of the sheet bundle and presses the rear end of the sheet bundle at the binding position, and at different positions in the front and rear with respect to the transport direction of the sheet bundle feed belt. A first and a second stop member that is installed and stops the conveyance of the sheet bundle by an ascending operation or a descending operation; and is provided between the first and second stop members and the pressing roller to move the sheet bundle by the ascending operation. A feed roller that passes the sheet bundle and pushes the trailing end of the sheet bundle in a descending operation, a stapling apparatus that moves along the transport path and performs a binding process on the sheet bundle, and an operation position setting unit that sets a binding processing operation position of the stapling apparatus. In accordance with the size of the sheet bundle and the binding position set for the sheet bundle, the operating position setting means moves the stapling device to a predetermined position on the transport path to set a binding processing operation position. Either the raising operation or the lowering operation of the first or second stop member is selected, or the feed roller is lowered to stop the sheet bundle conveyed by the sheet bundle feed belt, and the sheet bundle is set at the set binding position. A paper binding machine that binds to paper.