JP2001270651A - Sheet aftertreatment device with bookbinding function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small sheet aftertreatment device featuring bookbinding function. SOLUTION: The sheet aftertreatment device for sorting sheets continuously carried from the lower end of a carry-in passage 10 on a plurality of trays 4 comprises a stage 31 for stacking the sheets in plural carried from the carry-in passage 10, a staple mechanism portion 70 for stapling the plural sheets at their portions to be folded, stacked on the stage 31, and a blade mechanism portion 90 and a press mechanism portion 100 for folding the plural sheets stabled at their portions to be folded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet processing apparatus having a bookbinding function which has a function of sorting continuously carried sheets on a plurality of trays and a function of binding a plurality of sheets together. Things.

[0002]

2. Description of the Related Art Conventionally, as a sheet post-processing apparatus for sorting continuously carried sheets on a plurality of trays, a tray movable type having a plurality of trays movable up and down and a plurality of trays are defined. A fixed tray type provided at a position is known.

In the former movable tray type, a plurality of trays having a large weight due to accumulation of sheets are raised and lowered.
There are problems such as the necessity of a large drive mechanism.On the other hand, the latter type with a fixed tray requires a complicated transport path for selectively transporting paper to each tray. However, there is a problem that the configuration becomes complicated and large.

[0004]

SUMMARY OF THE INVENTION The present applicant has previously provided a paper transfer means so as to be movably provided so as to be selectively interposed between a plurality of paper carry-in gates and a plurality of paper discharge ports. A processing apparatus has been proposed (Japanese Patent Application Laid-Open No. 10-304511).
The paper transporting means in such a post-processing apparatus transports the paper from a paper transport gate facing the paper transporter and transports the paper toward a paper discharge opening facing the paper transport gate. The sheet transported to the sheet outlet is discharged onto a tray located below the sheet outlet. Therefore, sheets can be sorted on a plurality of trays according to the movement position of the sheet transfer means. As a result, there is no need to move the tray as in the above-described movable tray type, and no need for a complicated transport path as in the above-described fixed tray type, and the overall configuration of the apparatus can be simplified and downsized. It can also sort paper so that the fixed tray can function as a mailbox.

The present invention has been made in connection with such a paper post-processing apparatus, and an object of the present invention is to provide a small-sized paper post-processing apparatus which also has a bookbinding function.

[0006]

A sheet post-processing apparatus with a bookbinding function according to the present invention is a sheet post-processing apparatus for sorting sheets continuously carried in from a carry-in path into a plurality of trays. A stage capable of stacking a plurality of sheets of paper carried from the staple, stapling means capable of stapling a portion of the plurality of sheets to be bent which are stacked on the stage, and a bending schedule of the plurality of sheets stapled by the stapling means Bending means for bending the portion.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of an apparatus main body 1 in a sheet post-processing apparatus with a bookbinding function according to the present embodiment, and FIG. 2 is a schematic side view for explaining the internal structure thereof. In the case of the present example, sheets whose transport direction has been reversed by the sheet reversing device 2 are sorted or bound. That is, paper discharged from a host device such as a copying machine or a printer
It is carried into the sheet reversing device 2 from the direction of arrow A in FIG.
After the transport direction is reversed by the sheet reversing device 2, the paper is transported in the downward arrow B direction by the transport path 10 on the right side in FIG. The sheet reversing device 2 carries a sheet onto the stage 3 from the direction of arrow A, and then carries the sheet to the carry-in path 10 from the direction of arrow B with the rear end of the sheet in the carrying direction as the leading end in the carrying direction. The paper transport direction is reversed.

A plurality of carry-in gates 13 arranged in the up-down direction are provided in the carry-in path 10, and a plurality of outlets (not shown) arranged in the up-down direction are provided on the left side in FIG. Are formed. Inside the apparatus body 1, an indexer 20 for sorting the paper carried in from the carry-in path 10 onto the plurality of trays 4 and the sheets carried in from the lower end of the carry-in path 10 are bound and then stored in the binding tray 5. Bookbinding mechanism 30 is provided. Therefore, in the following, the carry-in path 10, the indexer 20, and the bookbinding mechanism 3 will be described.
The configuration of 0 will be described separately.

A "Loading Path 10" A plurality of pairs of rollers 11 for transporting the sheet in the direction of arrow B with the sheet sandwiched from the front and back sides are provided in the loading path 10 as shown in FIG.
12 are provided. Further, at a fixed position in the carry-in path 10, there are provided a plurality of carry-in gates 13 capable of taking out sheets from the middle position of the carry-in path 10 to the left in FIG. As shown in FIG. 3, the carry-in gate 13 is provided so as to be rotatable about a horizontal axis O1, and a substantially L-shaped arm 14 having a bent end is provided at each end. When the arm 14 is in the first rotation position P1, the carry-in gate 13 is in a non-take-out state in which the sheet S passes downward without taking out the paper S, and the arm 14 is pushed up to the second rotation position P2. When
The paper S is taken out in a substantially horizontal direction.
In FIG. 3, the second carry-in gate 13 from the top is in a take-out state, and the sheet S is taken out in a substantially horizontal arrow C direction while being guided by the inner surface 13B of the carry-in gate 13. The other carry-in gate 13 in FIG. 3 is in the non-take-out state, and the outer surface 13A of the carry-in gate 13 in the non-take-out state guides the sheet S to the carry-in gate 13 in the take-out state.

B "Indexer 20" A plurality of outlets (see FIG. 5) 6 which are arranged vertically are formed on the left side of the apparatus body 1 in FIG. 2, and the outlets 6 and the entrance gate of the entrance path 10 are formed. An indexer 20 as a sheet transporting means is provided between the apparatus 13 and the apparatus 13 so as to be able to move up and down. The indexer 20 selectively intervenes between the carry-in gate 13 and the discharge port 6 according to its elevation position, and after the sheet S is carried in from the carry-in gate 13 on the right side thereof, the sheet S from the discharge port 6 on the left side. S is discharged. That is, the indexer 20 carries the paper S onto the stage 22 from the carry-in gate 13 facing the right side through the carry-in part 21, and then passes through the carry-out part 23 from the discharge port 6 facing the left side in the direction of the arrow E through the carry-out part 23. And eject the paper. Outlet 6
The sheet S discharged from the tray is received on the tray 4 located below the discharge port 6. Therefore, the paper S in the carry-in path 10 is sorted on the plurality of trays 4 according to the elevation position of the indexer 20.

As shown in FIGS. 3 and 4, the introduction section 21
It comprises upper and lower rollers 21A and 21B and upper and lower guide plates 21C and 21D. The introduction section 21 is provided with a gate drive mechanism 24 for bringing the carry-in gate 13 facing the introduction section 21 into a state in which the paper S is taken out. The drive mechanism 24 is provided with a slider 24A slidable in the horizontal direction. The slider 24A is urged in the direction of arrow F1 by a spring 24B, and is slid in the direction of arrow F2 via a link 24D that is rotatable about a vertical axis O2 by operating a solenoid 24C. .
At both ends of the slider 24A, interference portions 24E are provided. When the slider 24A slides in the direction of arrow F2, the interference portions 24E
At the interference position directly above or below the
When 4A slides in the direction of arrow F1, the arm 14
Deviates from the interference position. Therefore, by raising the indexer 20 with the interference part 24E positioned at the interference position immediately below the arm 14, the carry-in gate 13 facing the introduction part 21 is in the state of taking out the paper S.

The sheet S carried on the stage 22 is transferred in the direction of arrow E by the transfer mechanism 25 (see FIGS. 4 and 5), and is discharged from the discharge port 6 facing the sheet S. The transfer mechanism 25 of the present example is configured such that the claw 25B attached to the left and right transfer belts 25A driven by the motor and the upright portion 25D provided on the slide plate 25C driven by the motor move the rear end of the sheet S. It is transported by pushing in the direction of arrow E. That is, when the paper S on the stage 22 is transported without being stapled, the transport start position P12
After the rear end of the sheet S is positioned by the claw 25B located at the position (2), the sheet S is pushed by the claw 25B in the direction of the arrow E and transported. When stapling a plurality of sheets S stacked on the stage 22, the stapling position P11
After the rear ends of the plurality of sheets S are positioned by the upright portion 25D located at the position, the rear ends of the plurality of sheets S are stapled by the stapler 26 (see FIG. 4). Thereafter, the plurality of stapled sheets S are transported in the direction of arrow E by the upright portion 25D, and the transport operation is taken over by the claws 25B. Therefore, the plurality of stapled sheets S are transported in the direction of arrow E by the cooperative operation of the upright portions 25D and the claws 25B.

At a position above the stage 22, a paper alignment mechanism 27 for aligning the posture of the paper S carried on the stage 22 from the left and right directions is provided. As shown in FIGS. 4 and 5, the unloading section 23 is provided with a lower drive roller 23A driven by a motor and a pinch roller 23B moved up and down by the motor.

C “Bookbinding Mechanism 30” The bookbinding mechanism 30 of this embodiment is provided at a lower fixed position in the apparatus main body 1 and accumulates a plurality of sheets S loaded from the lower end of the loading path 10. Is bound on the bookbinding tray 5.

As shown in FIG. 6, the bookbinding mechanism 30 includes a paper loading mechanism 40, a paper alignment mechanism 50, and a paper transport mechanism 6.
0, a staple mechanism 70, a blade mechanism 90, and a press mechanism 100. Hereinafter, these configurations will be described separately for each mechanism unit.

C-1 "Paper Loading Mechanism 40" The paper loading mechanism 40 is, as shown in FIG.
Paper S is carried in the direction of arrow G from the lower end of the
Is loaded onto the stage 31 of the bookbinding mechanism 30. Paper S taken out from the lower end of carry-in gate 13
Is guided by upper and lower guide plates 41 and 42, and is carried onto the stage 31 by an introduction roller 43 and a pinch roller 44. The introduction roller 43 is driven to rotate by a carry-in motor 45, and the motor 45
Is controlled based on the detection signal of the sensor 46 that detects the passage of.

An alignment roller 48 is connected to the introduction roller 43 by a timing belt 47 as shown in FIG. The alignment roller 48 rotates counterclockwise in FIG. 12 in conjunction with the introduction roller 43,
The sheet S on the stage 31 is moved in the direction of the arrow H, and its rear end is aligned with the stopper 31A of the stage 31.

C-2 "Paper Alignment Mechanism 50" This paper alignment mechanism 50 aligns the posture of the paper S on the stage 31 from the left and right directions. FIG. 13 is a plan view of the paper alignment mechanism section 50, and FIG. 14 is a side view thereof. In these figures, 51A and 51B are left and right alignment plates, which are indicated by arrows P in guide grooves 52A and 52B.
1, P2 and slidable in the directions of arrows Q1, Q2. The alignment plate 51A on the left side (the right side in FIG. 13) in the transport direction (the direction of the arrow M) of the sheet S is
The pulley 53A is slid in the directions of the arrows P1 and P2 when the pulley 53A is rotationally driven by the aligning motor 56A. Similarly, the transport direction of the paper S (arrow M direction)
The right (left side in FIG. 13) alignment plate 51B is connected to a belt 55B stretched between the pulleys 53B and 54B, and the pulley 53B is rotated by an alignment motor 56B to generate an arrow Q1. , Q2. The left and right alignment plates 51A and 51B have a C-shaped arm shape at the tip (left end in FIG. 14) in order to avoid interference with a staple mechanism 70 described later. Also, at the lower ends of the left and right alignment plates 51A and 51B, projections 51A-1 and 51B-2 for preventing paper slip-through are provided as shown in FIGS. It moves in the escape groove 31B in the shape of a circle.

The aligning motors 56A and 56B are controlled in association with each other. When each of the aligning motors 56A and 56B is driven forward, the left and right aligning plates 51A and 51B slide in the directions of arrows P1 and Q1 approaching each other to align the sheets S. Also, when each of them is driven to rotate in the reverse direction, the left and right alignment plates 51A and 51B slide in the directions of the arrows P2 and Q2 which are separated from each other, and the alignment of the paper S is released.

C-3 "Paper Transport Mechanism 60" The paper transport mechanism 60 transports the paper S on the stage 31 in the direction of arrow M. As shown in FIG. 15, the front and rear pulleys 61 and 62
, And a timing belt 63 spanned between them, and two paddles 64 for pressing the rear end of the sheet S are attached to the timing belt 63. The pulley 61 includes a timing belt 65, a pulley 6,
6, via the timing belt 67 and the driving pulley 68, the motor 69 is rotated counterclockwise in FIG. Thereby, the battle 64 is changed as shown in FIG.
5, the sheet S on the stage 31 is moved in the direction of the arrow M by moving so as to draw the trajectory L of the alternate long and short dash line.

C-4 "Staple Mechanism 70" This staple mechanism (staple means) 70 is composed of a stapler body 71 and a clincher mechanism 72, and is integrated on the stage 31 by the cooperation of these. The stapled paper S is stapled. Stapler body 7
17 is provided below the stage 31 as shown in FIG. 17, and at the time of staple operation, as shown in FIG. 19, the tip for punching out the staple moves upward.

As shown in FIG. 16, the clincher mechanism 72 includes a base plate 73 fixed at a fixed position.
A cam shaft 75 is rotatably supported. Two cams 76 having the same rotation phase are attached to the cam shaft 75. The cam shaft 75 is rotated in a direction indicated by an arrow N by a pulse motor 78 via a timing belt 77. An origin detection plate 79 is attached to the cam shaft 75, and this cuts off the optical path of an optical origin detection sensor 80 to detect the origin of the rotational position of the cam shaft 75. A clincher 82 is vertically movably guided by each of the two guide bodies 81 fixed to the base plate 73.
The clincher 82 bends the tip of the staple that is ejected from the tip of the stapler body 71 by the lower surface. At the upper end of the clincher 82, a pressure receiving plate 83 facing the cam 76 is attached.
Compression spring 8 provided between 3 and guide body 81
4, the pressure receiving plate 83 is pressed against the cam surface of the cam 76.

C-5 "Blade Mechanism 90" This blade mechanism 90 is provided above the stage 31 and faces a press mechanism 100 (described later) which faces the opening 31C of the stage 31 (see FIG. 6). Together with the sheet folding means, and serves as a sheet group S that has been stapled.
One staple part is folded in two.

As shown in FIG. 20, the blade mechanism 90 has a blade mounting plate 92 between the left and right fixed frames 91 so as to be vertically movable. That is, the left and right fixed frames 91 are provided with left and right guide shafts 94 for vertically guiding the left and right sliders 93, and the blade mounting plate 92 is bridged between the left and right sliders 93. . Blade mounting plate 92
A blade 95 is attached to a lower end of the blade 95, and the attachment position of the blade 95 can be adjusted by right and left adjustment screws 96. A fulcrum shaft 92A provided on the blade mounting plate 92 is connected to an output shaft 98A of a motor 98 via links 97A and 97B, and the rotation of the motor 98 causes the blade mounting plate 92 to move up and down. The motor 98 is supported between the left and right fixed frames 91.

The blade mounting plate 92 includes a light shielding plate 92B.
The light-shielding plate 92B is moved when the blade mounting plate 92 moves up to a predetermined origin position.
The optical path of the optical origin detection sensor 99 attached to the fixed frame 91 is blocked. Thus, the origin position of the blade mounting plate 92 is detected, and the motor 98 is controlled based on the detected position. The blade 95 together with the blade mounting plate 92 is moved to an upper standby position as shown in FIG. 21A or a lower paper folding position as shown in FIG.

C-6 "Press Mechanism Unit 100" The press mechanism unit 100 is, as shown in FIG.
The drive shaft 101, which is provided below the first opening 31C and is rotatable about horizontal axes O11, O12.
102 is provided in place. As shown in FIG. 22, one end of the drive shaft 101 is connected to a drive motor 106 via a pulley 103, a timing belt 104, and a pulley 105. Also, the other end of the drive shafts 101 and 102 has
Gears 107 and 108 of the same diameter that mesh with each other are attached. At both ends of the drive shaft 101, left and right bearing blocks 111A and 111B are held so as to be rotatable around an axis O11, and these blocks 111A and 111B are held.
The press roller 112 is rotatably supported between them. Similarly, left and right bearing blocks 113A and 113B are held at both ends of the drive shaft 102 so as to be rotatable about an axis O12.
Between B, a press roller 114 is rotatably supported. A gear 115 meshing with the gear 107 is attached to an end of the press roller 112, and a gear 11 meshing with the gear 108 is similarly attached to an end of the press roller 114.
6 is attached. Further, block 111A,
Between 113A and between blocks 111B and 113B, a press spring (tensile spring) 117A,
117B is attached.

Therefore, the press rollers 112, 114
22, are urged by press springs 117A and 117B in directions in which they are pressed against each other, and are rotated at the same speed in opposite directions by rotation of the drive motor 106 in one direction. Also, on the lower side of the press mechanism 100, FIG.
A guide plate 118 extending downward as shown in FIG.

D "Operation" Next, the operation will be described by dividing it into "sorting operation" and "bookbinding operation".

D-1 "Sorting Operation" As described above, the indexer 20 sorts the paper S carried into the stage 22 from the carry-in path 10 onto the plurality of trays 4 according to the elevation position. At that time, stage 2
2 and a plurality of sheets S are stacked on top of each other and stapled.
6 can be stapled.

D-2 "Bookbinding Operation" In the case of the bookbinding operation, as shown in FIG. 6, the bookbinding mechanism 30 carries in the sheet S from the lower end of the carry-in path 10 in the direction of arrow G. The paper S is carried into the stage 31 by the paper carrying mechanism 40, and is sequentially accumulated as shown in FIG. Stage 3
The rear ends of the plurality of sheets S stacked on the top 1 are aligned by the stopper 31A of the stage 31, and are aligned in the left-right direction by the sheet alignment mechanism unit 50. After the number of sheets S to be bound are arranged on the stage 31, the sheets S are transferred to a predetermined staple working position by the paddle 64 of the sheet transfer mechanism 60 as shown in FIG.

Thereafter, the middle portion of the plurality of sheets S to be bound is stapled by the stapling mechanism 70 while being slightly lifted upward as indicated by a two-dot chain line in FIG. That is, first, the clincher 82 of the clincher mechanism 72 moves down as shown in FIG. 18, and then the tip of the stapler body 71 moves up as shown in FIG. 19, thereby binding the book as shown in FIG. An intermediate portion of the plurality of sheets S is stapled.

Thereafter, the stapled sheet group S1 is
As shown in FIG. 9, the sheet is further transported in the direction of arrow M by the paddle 64 of the sheet transport mechanism 60, and the intermediate portion of the sheet group S <b> 1 is positioned on the opening 31 </ b> C of the stage 31. Thereafter, as shown in FIG. 10, the blade 95 of the blade mechanism 90 moves downward, and the press rollers 112 and 114 of the press mechanism 100 are urged in a direction of pressing against each other, in the direction of the arrow in FIG. Rotate. As a result, the sheet group S
1 is opened by a blade 95 in an opening 31C.
From between the press rollers 112 and 114,
Further, it is drawn downward while being pressed between the press rollers 112 and 114. Press rollers 112, 114
Is a sheet group S1 formed by press springs 117A and 117B.
When the sheet group S1 is pressed, the sheets are separated from each other as shown in FIG. 10 according to the thickness of the sheet group S1.

After that, the sheet group S1 bound by passing between the press rollers 112 and 114 is, as shown in FIG.
While being guided by the guide plate 118, the sheets are accumulated in the bookbinding tray 5.

The bookbinding mechanism 30 repeats the above-described operations, thereby obtaining a plurality of sheets S stacked on the stage 31.
Are sequentially bound and stacked in the binding tray 5.

[0036]

As described above, the paper post-processing apparatus with a bookbinding function of the present invention is a paper post-processing apparatus for sorting sheets continuously carried in from a carry-in path onto a plurality of trays. By stacking a plurality of papers loaded from the position on the stage, stapling and folding them with a stapler, it also has a bookbinding function, and also carries in sorting paper and bookbinding paper. By sharing the road, the size of the entire apparatus can be reduced.

As a configuration for sorting sheets on a plurality of trays, a plurality of loading gates provided at an intermediate position of the loading path, a plurality of outlets corresponding to the plurality of trays, and a plurality of the loading gates are provided. And a plurality of paper outlets that can move between the plurality of outlets, the size of the entire apparatus can be further reduced.

[Brief description of the drawings]

FIG. 1 is a side view of an entire apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic side view for explaining the internal structure of the device of FIG.

FIG. 3 is a perspective view of a loading gate portion in FIG. 2;

FIG. 4 is a side view for explaining a schematic configuration of an indexer part in FIG. 2;

FIG. 5 is a perspective view of a transfer mechanism in the indexer of FIG. 4;

FIG. 6 is a side view of the bookbinding mechanism in FIG. 2 when paper is carried in.

FIG. 7 is a side view of the bookbinding mechanism in FIG. 2 when sheets are aligned.

FIG. 8 is a side view of the bookbinding mechanism in FIG. 2 during a stapling operation.

9 is a side view of the bookbinding mechanism in FIG. 2 at the time of starting a paper folding operation.

FIG. 10 is a side view of the bookbinding mechanism in FIG. 2 during a paper folding operation.

11 is a side view of the bookbinding mechanism in FIG. 2 immediately after the paper folding operation is completed.

FIG. 12 is a schematic side view of a paper carrying mechanism in FIG. 6;

FIG. 13 is a schematic plan view of a paper alignment mechanism in FIG.

FIG. 14 is a schematic side view of a sheet alignment mechanism in FIG.

FIG. 15 is a schematic side view of a sheet transfer mechanism in FIG. 6;

FIG. 16 is an exploded perspective view of the clincher mechanism in FIG.

FIG. 17 is a schematic side view of the staple mechanism in FIG. 6 during standby.

FIG. 18 is a schematic side view of the staple mechanism in FIG. 6 during operation.

FIG. 19 is a schematic side view of the stapling mechanism in FIG. 6 during a stapling operation.

20 is an exploded perspective view of the blade mechanism in FIG.

21 (a) is an exploded perspective view of the blade mechanism of FIG. 20 in a standby state, and FIG. 21 (b) is an exploded perspective view of the blade mechanism in a paper folding operation.

FIG. 22 is a perspective view of a press mechanism in FIG. 6;

FIG. 23 is a partially cutaway front view of the blade mechanism and the press mechanism in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Paper reversing device 3 Stage 4 Tray 5 Bookbinding tray 6 Discharge port 10 Loading path 13 Loading gate 20 Indexer (paper transfer means) 30 Bookbinding mechanism 31 Stage 31C Opening 40 Paper loading mechanism section 50 Paper alignment mechanism section 60 Paper transport mechanism 70 Staple mechanism (staple means) 71 Stapler body 72 Clincher mechanism 90 Blade mechanism 95 Blade 100 Press mechanism 112, 114 Press roller S Paper S1 Paper group

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kenji Umehara 2-12-15 Shibuya, Shibuya-ku, Tokyo Inside Gradco Co., Ltd. (72) Inventor Hiroshi Yamamoto 5-6-116 Ikegami, Ota-ku, Tokyo Ikegami-dori Shinki Co., Ltd. (72) Inventor Toshio Endo 5-6-16 Ikegami, Ota-ku, Tokyo Ikegami-dori Fuki term in Shinki Co., Ltd. 3F054 AA01 AC02 AC05 BA04 BF03 BF07 BH14 BJ02 3F108 GA02 GA04 GA10 GB01 GB03 HA02 HA39 HA44 HA54

Claims (6)

[Claims] 1. A sheet post-processing apparatus for sorting sheets continuously carried in from a carry-in path onto a plurality of trays, comprising: a stage capable of accumulating a plurality of sheets carried in from a predetermined position in the carry-in path; A bookbinding function, comprising: stapling means capable of stapling a portion to be bent of a plurality of sheets of paper stacked on the sheet, and folding means to bend a portion to be bent of the plurality of sheets stapled by the stapling means. Post-processing device with paper. 2. A plurality of carry-in gates capable of taking out paper in the carry-in path at an intermediate position of the carry-in path, and discharging sheets onto the trays at positions corresponding to the plurality of trays, respectively. A plurality of possible outlets are formed, and between the plurality of inlet gates and the plurality of outlets, a sheet transporting unit that transports a sheet carried in from the opposite inlet gate to the opposite outlet can be moved. The paper post-processing apparatus with a bookbinding function according to claim 1, wherein the apparatus is provided with: 3. The carry-in path is configured to be capable of carrying a sheet from above to below, and the plurality of carry-in gates are provided at an intermediate position of the carry-in path so as to be lined up and down. The paper in the road can be taken out in a substantially horizontal direction, the discharge port is formed at a position facing the plurality of carry-in gates so as to be arranged in a vertical direction, and the paper transfer means is provided with the plurality of carry-in gates. The paper post-processing apparatus with a bookbinding function according to claim 2, wherein the paper post-processing apparatus moves up and down so as to be selectively interposed between the plurality of discharge ports. 4. The stage according to claim 2, wherein said stage is provided at a position below said sheet transport means, and is capable of loading a sheet in a substantially horizontal direction from a lower end of said loading path. Paper post-processing device with bookbinding function. 5. The folding means includes an opening formed in the stage, a blade for pushing a portion of a sheet located above the opening below the opening, and a blade being pushed below the opening. 5. The sheet post-processing apparatus with a bookbinding function according to claim 1, further comprising a pair of press rollers that presses out a portion of the sheet that has been pressed and sends the sheet downward. 6. A bookbinding function according to claim 1, further comprising an aligning means above the stage for aligning a plurality of sheets stacked on the stage in a width direction. Post-processing device with paper.