JPH0539163A - Sheet afterprocessing device - Google Patents

Abstract

PURPOSE:To improve strength of a bin by contriving optimization of a bin shape in a sorter(limitless sorter) for performing bundle conveyance to a stacker. CONSTITUTION:In a sorter for moving a sheet on a bin by advancing conveying means 303(302) from the outside of the bin B, height (z) of the bin in a part, where the conveying means is advanced, is set to the height different from a sheet loading surface 310, and an opening part, with no bin end cut off, is provided to advance the conveying means 303 into this opening part 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet post-processing apparatus, and more specifically, to a sheet tray (hereinafter referred to as a bin) for sequentially ejecting sheets discharged from an image forming apparatus such as a copying machine, a laser beam printer, and a printing machine. (Referred to as) classified and stored.

[0002]

2. Description of the Related Art Conventionally, a post-processing function capable of classifying and storing sheet-like members by a number exceeding the number of bin trays of the sorter is not limited to the number of bin trays of a sorter installed on the discharge side of an image forming apparatus. Sorter (sheet post-processing device)
Is proposed.

In this type of apparatus, a bundle of sheet-shaped members, which have been sorted and stored in each bin tray and have reached a predetermined number, are successively carried out through a conveying means, and on a stack tray of a stacking device located behind the stack. To place. As a result, since the sheet-shaped members are stored again in the empty bin tray, the sheet-shaped members can be classified into the number of bin trays or more.

The transport means used in the above apparatus is
As described in Japanese Patent Application Laid-Open No. 1-127565 (see FIG. 27), there is provided a slide member 917 composed of a loading portion 902 that slides in contact with the bottom surface of the bin tray and an upright portion standing upright from the loading portion. , The grip conveyor 91 for stacking the sheets S on the bin B on the stack tray 910.
When the sheet S is conveyed to the fourth side, the pushing member 918 pushes the upright portion of the slide member 917 to slide the slide member 917 to convey the sheet S.

[0005]

However, in the above-mentioned sheet post-processing apparatus, the slide member 9 is attached to each bin B.
Since 17 is provided, the height of one bin is larger than the configuration of only the bin, so that the number of bins cannot be increased. Further, the cost is increased by the number of bottles, and the structure is complicated due to the above-mentioned mechanism, and there are problems in operating noise, vibration during operation, durability and the like.

Therefore, although a configuration as shown in FIG. 25 (not known) is conceivable, the following inconvenience may occur.

That is, as shown in FIGS. 28 and 29, the pushing member 950 is inserted into the bottle from the outside of the bottle (at the position of 950A) as indicated by an arrow 956 without using a slide member (950).
(Position B) When the sheet S is conveyed by the push bar 951 at the tip (in this example, the sheet S is discharged in a direction substantially orthogonal to the sheet conveying direction), the lowermost sheet S on the bin must also be conveyed. The lowermost surface 952 of the bar must be below the lowermost portion of the sheet S, ie, the sheet stacking surface 955 of the bin.

Therefore, a large notch 954 such as the end portion 953 which is not connected is formed in the bin B, and there is a possibility that the strength of the bin is significantly impaired.

Therefore, in order to form a structure in which the bottle end portion 953 is connected, as shown in FIG. 30, the push rod 951 is passed between the bottle end portion and the upper bottle, and then is inserted into the notch portion of the bottle (arrow). 957, 958) The sheet S may be extruded, but with this structure, the structure of the extruding member 950 becomes complicated. Therefore, not only the reliability is lowered and the cost is increased, but also the gap 960 between the push-out bin and the upper bin needs to be large, and the device may be enlarged.

[0010]

Means for Solving the Problems (and Action) The present invention solves the above-mentioned problems, enables simple, compact and cost reduction, and enables sheet movement on the bin without impairing the strength of the bin. It is an object of the present invention to provide a sheet post-processing device that can be performed.

In order to achieve the above-mentioned object, the present invention has at least one bin capable of accommodating a sheet and a conveying means for conveying the sheet on the bin outside the bin, and the height of the end of the bin for advancing the conveying means. Position different from the sheet stacking surface,
It is characterized in that a closed opening for sheet conveyance is provided at that portion.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An apparatus according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The image forming unit 101 is shown in FIG.
As shown in FIG. 3, a copying machine 102, an automatic document feeder 103 arranged on the upper side of the copying machine 102, a folding device 600 arranged on one side of the copying machine 102, and a sheet sorting device further downstream thereof. (Sorter) 1, and a stacker 400 for stacking the sheets classified in the sorter 1.

Then, the originals P placed on the original placing table 105 of the automatic original feeding apparatus 103 are separated in order from the lower order, and pass 10 on the platen glass 106 of the copying machine 102.
7 and is read by the optical system of the copying machine 102, and after the reading is completed, the platen glass 106 passes 10
It is discharged to the uppermost surface on the document placing table 105 through the sheet 9.

As shown in FIGS. 2 and 3, the sorter 1 is
A bin that has a sorter body 6 composed of a pair of front and rear side plates 3, a base 5 and a cover 4, accommodates a large number of bins B, and can move up and down along guide rails 7 provided on the sorter body 6, respectively. It has a unit 9.

The sorter main body 6 has a carry-in port 10 for carrying the sheet S discharged from an image forming apparatus such as a copying machine.
Is provided, and a first sheet conveying path 11 is formed from the carry-in port 10 toward the bin unit 9 and a second sheet conveying path 12 is branched from the first sheet conveying path 11. The first sheet transport path 11 is configured.
An upper discharge roller pair 13 that discharges non-sorted sheets (sheets that are not classified) is provided on the downstream side, and a lower discharge roller that discharges sorted sheets (sheets that are classified) is provided on the downstream side of the second sheet conveyance path 12. Pair 15 is arranged.

Further, a carry-in roller pair 16 and a deflector 17 are arranged at the branch portions of the first and second sheet conveying paths 11 and 12, and the deflector 17 is in a non-sort mode (a mode in which sheets are not classified). ) Is selected, the sheet S is displaced so as to be guided to the first sheet conveying path 11, and when the sort mode (sheet sorting mode) is selected, the sheet S is guided to the second sheet conveying path 12. Displaces as you do.

As shown in detail in FIG. 4, the bin unit 9 has a pair of frame frames 19 having an upright portion 19a and a lower portion 19b on the front side and the back side.
A bin slider 20 is attached to the tip of the bottom portion 19b of the bin frame 19, and the upright portion 1 of the bin frame 19 is further attached.
9a and the bin slider 20 are fixed by a bin cover 21 at their tip portions.

A support plate 23 is fixedly provided on the rear side of the base end of the bin frame 19, and the support plate 23 is fixed.
A rotation center shaft 27 having an upper end portion fixed to the upper arm 25 and a lower end portion fixed to the lower arm 26 is provided above the rotation shaft (not shown) provided on the support plate 23 and the bottle cover 21. A first alignment member 38 having an alignment rod 36 is provided between the upper arm 25 and the lower arm 26 so as to be rotatably supported by the rotary shaft 29. Further, a fan-shaped gear 31 is rotatably arranged on the support plate 23 around a rotation shaft provided on the support plate 23, and the lower arm 26 is fixed to the fan-shaped gear 31. Further, a pulse motor 32 is arranged below the support plate 23, and a gear 33 fixed to the output shaft of the pulse motor 32 meshes with the fan-shaped gear 31. The alignment rods 36 provided at the tip of the lower arm 26 and the tip of the upper arm 25 are installed so as to pass through the notches 35 provided in each of the bins B ... The alignment rod 36 is configured to swing by the rotation of the sector gear 31.

As shown in FIG. 4, a second alignment member 155 including an upper arm 151, a lower arm 152 and an alignment rod 150 is provided on the front side of the bottle frame,
A rotation center shaft 153 provided on the bin cover 21 of the upper arm 151 and a rotation center shaft 154 provided on the lower side of the bin frame 19 of the lower arm 152 are configured to be rotatable by drive means (not shown). ..

The aligning rod 150, like the aligning rod 36 described above, is configured to penetrate the notches 157 provided in the respective bins B ...

The bins B ... Stored in the bin unit 9 have one end movably mounted in the comb-shaped groove of the bin slider 20, and the trunnion 3 at the base end thereof.
0 is rotatably inserted, and before and after the base end,
As shown in detail in FIG. 6, a pin 140 is fixedly installed.
The pin 14 penetrates through the slits 41 provided in the front and rear bin support plates 19a, and the cushion material O-ring 141 is attached to the pin 140 penetrating through the slit 41.
The trunnion 30 is fitted so as to be stacked on the guide rail 7 (see FIG. 2). And
The lowest trunnion 30 is the upright portion 9 of the bin frame 19.
1a (the back side is not shown) is abutted on a lower guide roller 42 rotatably supported, and each bin B is supported by the bin unit 9 so that the bin interval is kept constant and equal to the diameter of the trunnion 30. .. The bin unit 9 is configured such that the upper guide roller 43 and the lower guide roller 42 are fitted into the guide rail 7 and can move up and down along the guide rail 7.

On the other hand, in the vicinity of the lower discharge roller pair 15, an electric stapler 200 for binding the sheets stored in the bin B _c is arranged.
As shown in FIG. 2, 0 indicates an arrow C by a driving means (not shown).
It is configured to move forward and backward. Normally, it is retracted to a position 200a where it does not interfere with the vertical movement of the bin B, and when binding the sheet S on the bin B, it moves to the position 200b to bind the sheet S. After the binding is completed, the electric stapler 200 is returned to the standby position 200a by a driving unit (not shown). In addition, the electric stapler 200
As shown in FIG. 7, two sheets (200A, 200b) are provided at positions orthogonal to the sheet S carrying-in direction.

The electric stapler 200 carries out a stippling operation by the rotation of a motor (not shown). When binding the sheets S of a plurality of bins B ..., A stippling end signal of the sheets S of one bin B is detected. After that, the bin unit 9 moves one bin to bind the sheets S to be stored in the next bin B.

Here, the bin B is provided with a notch 160 at the portion where the stapler enters, so that it does not interfere with the operation of the staple.

Further, since the electric stapler 200 is provided at two places, the operator can operate each of the 200A and 200B independently (bind at one place), or 200
It is possible to operate both A and 200B (binding at two places).

The lower discharge roller pair 15 of the front and rear side plates 3
As shown in FIGS. 2 and 3, cam shaft holders 47 are arranged at positions facing the stapler 200 and the stapler 200, respectively, and a bearing that carries a thrust load between the cam shaft holder 47 and the motor base 100. A lead cam shaft 50 is rotatably arranged via 49. A lead cam 40 having a spiral cam surface is fixed above the lead cam shaft 50, and a pulley 51 is fixed below the lead cam shaft 50. A belt 53 is provided between the pulley 51 and the shift motor 52. The lead cam 40 can be rotated in both forward and reverse directions by a shift motor 52 which is selectively rotated in both forward and reverse directions.

Further, the lead cam 40 is disposed so as to face the lower discharge roller pair 15 provided substantially in the center of the sorter body 6, and the trunnion 30 of the bin B moving to a position facing the lower discharge roller pair 15 is arranged. Is placed on the spiral cam surface and moved up and down along the guide rail 7 having a bent portion (see FIGS. 2 and 5). For example, as shown in FIG. 5, one rotation of the lead cam 40 in the direction of arrow A causes the trunnion 30d to rotate.
Is moved to the position 30C in the figure of the lead cam 40, and is rotated to the position 30b in the figure by another rotation. Then, it is moved to the position of 30a in the figure by one more rotation.

In this way, between the bin B _b that receives the sheet from the lower discharge roller pair 15 and the bin B _c that binds the sheet S by the electric stapler 200, and the bins B _a and B _d located on both upper and lower sides thereof. Three spread portions X wider than the intervals of the other bins B are formed therebetween.

Next, the means for taking out the sheet bundle will be described (see FIGS. 7 and 8). A sheet take-out member 300 that conveys the sheets S stacked on the bin tray is provided in the sorter body 6 on the rear side of the sorter. The sheet take-out member 300 is composed of an extruding rod 302 and an arm 303, and is configured to be rotatable around a rotation center shaft 301 by a drive unit of a motor / gear train.

[0030] opposite to the position of the extrusion member 300 is because it is provided on the main body side in a position facing the bottle B _c that performs sheet stapling, always bottles B _c be bin unit 9 moves up and down by the operation It will be composed. The sheet take-out member 300 is normally located at the solid line position (300a) and stands by at a position where it does not interfere when the bin unit 9 moves up and down.

When the sheet is taken out, the sheet taking-out member 300 is rotated from the standby position to a predetermined pushing-out position (dotted line) corresponding to the paper size. Here, the sheet take-out member 300 is the staple binding bin B as described above.
Wider opening X at a position facing _c that is wider than between other bins
First, the arm 303 rotates so as not to interfere with the upper and lower bins B _b and B _c , and moves to the alternate long and short dash line position (300b). As shown in FIG. 8, the lower end surface 311 of the push rod 302 has a bin B _c.
Is located below the upper surface 310 (lower surface of the sheet S) 310 by the distance Y, and the opening 3 provided in the bin by the above-described operation.
The sheet S is pushed out while keeping the distance Y as described above.

Further, a step 313 having a distance Z is provided on the far side of the bin B _{c where} the push rod operates (the surface 310 on which the sheet S is placed and the surface 312 which is lowered by one step (the bin end 3
14) Since the portion of the bottle B into which the above-mentioned push rod enters is not a U-shaped cutout from the outer shape of the bottle but becomes an opening connected at the portion 314, the strength of the bottle itself is not damaged.

In this manner, the sheet on the bin B _c is moved by the sheet take-out member 300 from the front side end 320 to the positions 320a to 320b. A stacker 4 having a tray 401 at the place where the sheet S is conveyed
00, the sheet side end 320 overlaps (distance 321) from the center of the roller pair, and the grip roller 350
The sheets are nipped and conveyed by the stacker and stacked on the tray 401 of the stacker 400. The tray 401 is configured to move up and down (355 direction) according to the state.

The surface 312 lowered one step here is shown in FIG.
In the state where there is the smallest number of bins, that is, when the bin angle is the steepest (state of B _d ), the upper and lower bins do not interfere with each other.

That is, the angle 371 of the stepped portion of the bin is such that the intersection 372 of the surface 310 on which the sheet S is placed and the slope 374 does not interfere with the lower slope 373 of the upper bin B (FIG. 16).

In the structure described above, the lead cam is provided outside the shaded area (area between the stackable sheet width G1 and the stackable height G2) provided in the bin in the sheet take-out direction shown in FIG. Therefore, the bundle can be taken out by a simple method while being guided by the sheet stopper B'as described above.

Since the present embodiment has the above-mentioned structure, the sheet S discharged from the image forming apparatus such as a copying machine.
Is guided from the carry-in port 10 to the deflector 17 which is displaced in the non-sort mode (the mode in which the sheets are not classified) or the sort mode (the mode in which the sheets are classified), and the first sheet conveying path 11 or the second sheet is guided. It is introduced into the transport path 12.

When the non-sort mode is selected, the sheets are discharged and stored in the bin cover 21 which is the first bin of the bin unit 9 by the upper discharge roller pair 13 through the first sheet conveying path 11. It

When the sort mode is selected,
In the bin unit 9, the trunnion 30 is sequentially moved by the spiral cam of the lead cam 40 due to the rotation of the lead cam 40, and the bin B ... Space is provided between the position facing the lower discharge roller pair 15 and the bin B facing the stapler 200. Wider openings X, X are formed at three places, and the upper guide roller 43 or the lower guide roller 42 is pushed and moved by the moving trunnion 30. Then, the sheet S passes through the second sheet conveying path 12 and is opened by the lower discharge roller pair 15 from the first bin B ₁ to the next bin B ...
Is discharged and stored.

Then, for example, when the sheet S is discharged to the bin B _{b which} has been moved to a position facing the lower discharge roller pair 15, the sheet S is arranged with the rear end stopper B ′ inclined downward to the bin B. _b Moves toward the rear end stopper ST under its own weight.

Further, here, the second matching member 155 is the bin B.
Before the stacking of the sheets S on the top is started, the sheet is moved from the standby position 155b to the reference position 155a of the sheet end surface by the drive means of the motor / gear train. The aligning rod 36 of the first aligning member 38 is moved by a predetermined amount in the direction of arrow E from the standby position 38a by the pulse motor 32 that rotates based on the pulse signal corresponding to the sheet size, and the side edge of the sheet S is moved to the second aligning member 155. It is pressed against the matching rod 150 of. Further, the first aligning member 38 returns to the standby position in preparation for the ejection of the next sheet S after moving by a predetermined amount. At this time, the sheet S is discharged from the copying machine main body 102 onto the bin B of the sorter 1 with reference to the line 330 on the front side (the discharge position on the front side of the sheet is constant), and the distance 331 is generated by the movement of the first alignment member 38. The sheets are moved and aligned on the bin. At this time, the second aligning member described above is used as a reference side, and even if the O aligning member is moved from the standby position to the aligning position and aligned in accordance with the stacking of the sheets on the bin B, both aligning members are also moved and aligned. But of course it doesn't matter. At this time, of course, it does not matter even if the regulating members on both sides are moved to the above positions and aligned.
By repeating the above-described operation, a plurality of sheets S ... Are placed in one bin B _b at the side end on the second aligning member 155 and at the rear end in the bin B.
The rear end stopper ST is brought into contact and aligned.

Further, the alignment rod 36 of the first alignment member 38 penetrates through all the bins B ... And the sheets S ... Stored in the other bins B ... are similarly aligned. And bottle B ...
The binding of the sheets S discharged / stored in the sheet can be selected, and when the binding mode is not selected, the operation of the sorter 1 ends here.

When the binding stop mode is selected, the electric stapler 200 is moved from the standby position 200a to 200b by the binding stop start signal from the control means (not shown), and is moved to the binding position shown by the solid line in FIG. To do.

At this time, the head portion 210 of the electric stapler 200 is, for example, as shown in FIG. 2, the upper opening and spreading formed between the upper bin B _b and the bin B _c for storing the sheets to be bound. In the part X, the albin part 211 enters the lower expanded part X and moves to the binding position.

When the electric stapler 200 moves to the binding position, a binding stop permission signal is output from the control means (not shown), and the electric stapler 200 is driven.
The needle 212 is driven into the sheet S.

When the driving of the needle 212 is completed, the electric stapler 200 is returned to the position of 200a, and the binding for one bin is completed.

In the binding operation of the plurality of bins B ..., the sheets are discharged. It is most efficient to perform stapling sequentially from the last stored bin B. On this occasion. A series of operations of the electric stapler 200 is performed based on the bin shift completion signal, the next bin shift operation is performed by the series of operation completion signals of the electric stapler, and the binding operation is automatically completed by repeating this.

In this embodiment, the bin frame 19 of the bin unit 9 is provided with the second aligning member 155, and the bin unit 9 is provided with the first aligning member 38 including the aligning rod 36 for aligning the sheets. Therefore, the sheets S in the bin B can be reliably aligned. In addition, the alignment bar 36 which penetrates the alignment of the sheets through the notches 35 provided in all the bins B ...
After the sheet is discharged into the bin B because the aligning rod 36 is mounted on the bin unit 9, the alignment of the sheet S is performed by moving the aligning rod 36 during the bin shift. It is possible. Ie. Sheet S
The sheet S is always aligned except when it is entering the bin B.

Further, in the present embodiment, the first and second alignment members 38, 155 are moved about the rotation axis, and the rotation axis is arranged integrally with the bin unit 9, so that it is always stable. The aligned sheets can be aligned.

Further, since the electric stapler 200 is provided with the two expanded portions X, X at the positions opposite to the arrangement position at the same time, when the sheet binding of the electric stapler 200 is performed, the head portion 210 of the electric stapler 200 and the anvil are fixed. Part 211
The sheets can be easily moved to the binding position, and the sheets can be reliably bound without interfering with the sheets S stored in the lower bin B.

As described above, the bin upper sheet aligning means when the front side (the operator side on the left side in FIG. 7) is set to one side reference has been described, but the one having the reference on the back side may of course be used.

Next, a case will be described in which the sheet is distributed around the center line 340 according to the sheet width and is carried into the bin.

When the sheet width is large and the movement amount of the first alignment member 38 is small, the alignment is performed by the same alignment method as described above. However, as shown in FIG. 13, particularly when the width S of the sheet S is small, in the above-described form, when the movement amount N of the sheet S on the bin is large and the sheet interval is short, the first alignment member 38 is operated at high speed. Otherwise, the next sheet will interfere with the alignment rod. Therefore, as shown in FIG. 13, if the second aligning member 150 is moved to the position of 150C and fixed, and the first aligning member 38 performs the same alignment as described above, the movement amount of 38 may be small. The condition sheet alignment can be easily performed. At this time, the discharge position of the sheet S (front side of the sheet) 33
2 is a distance 331 away from the alignment rod so that it does not interfere. Further, in the above case, fix 38 to the reference side and
The alignment may be performed on the side of 50, and the alignment member 3 described above may be used.
Both 8 and 150 may be rocked to the regulated position. Needless to say, this configuration can be applied to sheet alignment on either the one-side reference or the center reference.

Next, when the binding or unbinding operation is completed on the bin according to the operator's selection, a sheet take-out signal is output from the control means and the sheet take-out operation is started. First, the bin for taking out the sheet moves to the position B _c facing the sheet taking-out member 300, and the second aligning member 155 rotates from the aligning reference position 155a to the standby position 155b which does not interfere with the sheet S when taking out the sheet.

Next, the sheet take-out member 300 is pushed out from the waiting position 300a to a predetermined pushing position 30 according to the paper size.
Rotate to 0b. As a result, as described above, the push-out bar of the sheet take-out member 300 causes the back end 3 of the sheet S to move.
60 from the initial alignment position 360a to the removal position 360b
(See FIGS. 7 and 8). At this time, the sheet S
Does not shift on the bins B because the rear end of the sheet S moves while being guided by the rear end stopper ST. After moving the sheet by a predetermined amount, the sheet take-out member 300 is returned to the initial standby position 300a. By the above-described operation, the leading edge 320 of the sheet S moves from the position 320a to the position 320b. The pair of grip rollers 351 and 352 are on standby at the position of the leading edge 320b of the sheet S after the movement, and the upper roller 352 is normally located at the upper standby position 352a. Upon detection, the driving unit descends to the grip position 352b, and the urging unit grips the sheet together with the lower roller 351. After that, the rollers 352 and 351 rotate in the arrow direction, the sheet S is conveyed in the arrow W direction, and the stacker 400
The sheet is stacked on the tray 401 of a (sheet S is in the state of 354). The tray 401 indicates the arrow 3 depending on the stacking state of the sheets.
It is configured to be movable in 55 directions, and in order to sort the sheets one bin at a time, it can also be moved (shifted) in the arrow 356 direction by a rack and a pinion.

By the above operation, the sheet taking-out for one bin is completed. Further, in the sheet taking-out operation of a plurality of bins B, when the sheets are not bound, the sheet is ejected and stored from the last bin B, and when the sheets are bound, the sheets are sequentially taken out from the last bin B to which the sheets are bound. Then it is the most efficient. At this time, a series of operations of the sheet take-out member 300 and the stacker 400 are performed based on the bin shift completion signal, the next bin shift operation is performed by the series of operation completion signals, and by repeating this, the sheet is taken out and the stacker is automatically moved to the stacker. Complete the loading operation. Of course, it does not matter if bin shift is performed while the sheet is being taken out.

Next, the binding position in the sheet binding operation will be described.

(I) In the case of binding at two places As described above, the electric stapler 200 is provided at two places in the direction orthogonal to the sheet carrying-in direction, and the electric stapler 200B on the back side can be moved in the arrow 250 direction by the driving means. It has become a structure. In the case of large size paper, as shown in FIG. 7, assuming that the distance from the paper edge of the needle position 212 is K in FIG. 7, as shown in FIG. 9, in the case of small size paper, the electric stapler 200B on the back side is used. It is possible to make the distance K between the needle position and the paper edge the same even if the paper size is changed by setting the position to 200 B _b .

With the above construction, it is possible to bind at two places. However, if the notch 160 of the bin B is made slightly larger in the direction of arrow 250 and the electric stapler 200A is also movable in the direction of arrow 250, it can be moved from the paper edge. It goes without saying that the distance can be arbitrarily determined.

Further, a case where the distance between the paper edge and the needle position K shown in FIG. 9 is changed will be described. As shown in FIG. 12, first, the position of the second aligning means 155 is set to the position 155 of FIG.
It moves deeper than b (155c). As a result, the front side sheet edge 320 of the sheet S is shifted to the back side 320c. As a result, the position of the needle changes from K to H from the sheet edge. At this time, the first aligning means 38 moves to 38c and aligns the sheet back side edge 360. As described above, it does not matter which side of the first and second alignment members is used as a reference, or both alignments may be performed. By moving the stapler 200B on the back side to the position 200B _c at a distance H from the end on the back side of the sheet, the back side can be stapled at the distance H.

With the above configuration, it is possible to staple at two places by changing the sheet size and the binding position.
Further, if the notch of the bin B is made slightly larger and the electric stapler 200A is also movable in the direction of arrow 250, it goes without saying that the stapling position can be arbitrarily determined.

(Ii) In case of single-place binding FIG. 10 is a diagram showing an operation diagram in the case of single-place binding. When aligning the sheets on the bin B, the first aligning member 38 aligns the sheets with the aligning rod 150 of the second aligning member 155 as described above.
The side edge of the sheet S was pressed against and aligned. In this embodiment, the first aligning member 38 is fixed at a predetermined position 38d, and the side edge of the sheet S is pressed inward by the aligning rod 150 of the second aligning member 155 to align. By this method, the binding position can be provided at an arbitrary distance L from the paper edge 320c. At this time, the electric stapler 200B is kept inoperative.

Further, since the stacker portion is provided on the front side as in the present invention, the following constitution can be adopted.

An example of stapling using the sheet conveying means 300 will be described with reference to FIG. Similar to the above, when the sheet alignment is completed by the first and second aligning means 38 and 155, the stapler 200 provided on the front side of the sheet
By A, the needle 212 is bound at a position at a distance O from the front edge of the paper. After this, the second aligning means 155 moves the standby position 1
When it is moved to 55b, the transport means 300 moves to the predetermined transport position 3
The sheet is moved to 00b and the grip roller 350 moves the stapler needle position 212 from the back side 360c by a distance O.
It is transported until it reaches the position. That is, the paper edge 320 when the first stapling is performed is moved by the distance P from the position 320a to the position 320c. Then, at this time, the staples 200A are actuated again to staple two sheets at a distance O from both sheet ends, and then the sheets are discharged onto the tray 401 of the stacker 400 as needed to take out the bundle. ..

With the above structure, the staples can be bound at a plurality of places with one staple, the cost can be reduced, and the staple can be stapled at any place by moving the position of the first aligning member 150 as described above. It will be possible.

As described above, the first and second alignment members are attached to the bin unit 9
However, it is needless to say that the same effect can be obtained even with the first and second aligning members in which the aligning rods are provided in the sorter 1 main body so as to penetrate all the bottles.
Further, although the sheet carry-in bin B _b and the staple bin B _c are separate bins, they may be the same bin (staples are provided at the sheet discharge port).

Next, an embodiment in which the stacker unit is not provided will be described with reference to FIG.

In this embodiment, only one electric stapler 200A is provided, and a returning member 707 similar to the first aligning member 38 'is further provided. The axis of the returning member 707 is composed of 707A, an arm 707B, and a returning rod 707C. The bin B is enlarged due to the sheet S having a large movement amount, and the pushing member 30
0 ', the stroke of the first alignment member 38' is enlarged, and a notch 710 for moving the return rod 707C is provided.

Thus, the first and second alignment members 38 ', 1
When the alignment is completed by 55 ', the stapler 200A binds the staple 212 at a distance Q from the front side of the sheet S. Then, when the second aligning member 155 'is moved to the standby position, the sheet take-out member 300' is moved to the position 300b, and the stapler 200A moves the sheet 212 until the staple 212 comes to the position of the distance O from the back side end of the sheet S. Is conveyed and the needle 212 is bound. Then, the return member 707 is changed to 70
After returning to the reference position on the bin B by rotating to the 7b position (may be near the reference position), the return pressing member 7
07 returns to the standby position and waits for the operation for the next sheet S on the bin B.

As shown in FIG. 15, the first and second aligning members 38 'and 155' align the sheet S on the back side of the electric stapler 200A by a distance U, and then on the second side. The aligning member 155 'returns to the standby position, the sheet take-out member 300' moves the sheet S, and the sheet S
The staple 212 is bound at a position of a distance W from the front side end of the sheet S, and then the sheet S is further moved by the sheet take-out member 300 ′ to bind the needle 212 at a position of the distance W from the back side end of the sheet S. Then, the return member 707 is rotated to the position 707b to return it to the almost standard position on the bin B. Since the sheet S at this reference position does not interfere with the stapler 200A when the bin B moves, it is not necessary to move the stapler 200A in the direction of arrow J.

In this embodiment, when the returning member 707 is not provided, the stapler operation of the sheet S on the second bin, the sheet S is long, and the second aligning member 155 'does not operate, but the stapling operation is possible. is there. Further, here, instead of the return member 707, the stacker 4 described in FIG.
Of course, it does not matter if the rollers 321 and 352 for discharging to 00 are rotated forward or backward (at this time, the stacker 400 may be omitted).

Next, a modified embodiment of the shape of the bin of the sheet take-out member entrance portion will be described. In FIG. 17, the step plane portion (FIG. 16) is not provided, and the notch 35 is provided on the slope 374, and the bin end 314d is also below the sheet stacking surface 310. And since it is connected by 314 parts, the same effect can be obtained.

The above description has been given to the case where the step is provided below. In FIG. 18, the bin end surface 314b is located above the sheet stacking surface, and the same effect can be obtained because the bins are connected at 314.

It is needless to say that the same effect can be obtained even in the case where the end face of the bottle is upward and there is no flat portion.

Further, in FIG. 17, as described above, the notch is provided on the slope so as not to interfere when the bottle is closed (state of FIG. 2B _d ), but the bottle is closed as shown in FIG. If the time interference does not occur, the same effect can be obtained by shifting the position of the end face upward or downward with the end of the bottle at a right angle.

Further, as shown in FIGS. 20 and 21, the same effect can be obtained even if the end portion 314a of the bin B into which the sheet pushing bar 951 enters is set below (or above) the bin upper surface 955 and the opening 954 is provided. Needless to say.

Further, a case where the sheet conveying means is operated from the bin stopper side will be described with reference to FIG. The sheet pushing member 341 is configured such that its lower portion 341 'is located below the bin upper surface 342, and can be moved to an arrow 343 by a driving means (not shown).
The notch 340 is provided in the bin stopper ST so that the bin stopper end portion 314 is connected to the bin stopper ST, and the sheet pushing member 341 is inserted from the outside to push out the sheet. In this case, the bin end 314 ′ is located above the sheet stacking surface 310.

The example in which the sheet is conveyed on the bin by the pushing member has been described above. However, even if the gripper member 380 is moved in the direction of the arrow 381 to pull out or push out the bundle as shown in FIG. 23, the same effect as described above can be obtained. It goes without saying that you can get it.

In the present invention, the effect is described for the bin moving type sorter using the lead cam.
No. 4, a type that opens and closes the bins by a link 950 (Japanese Patent Laid-Open No. 58-17063), a Geneva sorter (Japanese Patent Laid-Open No. 60-223764) shown in FIG. 25, a bottle fixed type, and only one tray. A sorting finisher 901 which has two finishers (Japanese Utility Model Publication No. 62-20046) and two sorter units 900 shown in FIG.
And the post-processing station 902 are alternately moved. The post-processing station section 903 of the limitless sorter (Japanese Patent Application No. 2-
It is needless to say that the same effect can be obtained even when used in (Japanese Patent No. 332688).

[0080]

As described above, the height of at least one bin capable of accommodating sheets and the transporting means for transporting the sheets on the bin is provided outside the bin and the height of the end of the transporting means of the bin to enter. Is located at a position different from the sheet stacking surface, and a closed opening for sheet transport is provided in that position, making it possible to simplify, compact, and reduce costs without compromising the strength of the bin, and moving the sheet on the bin. Can be done.

[Brief description of drawings]

FIG. 1 is a side view showing an outline of an image forming unit according to an embodiment of the present invention.

FIG. 2 is a side view of a sorter.

FIG. 3 is a perspective view of a sorter.

FIG. 4 is a perspective view of a binine unit.

FIG. 5 is a diagram showing movement of a bin by a lead cam.

FIG. 6 is a plan view showing an engaged state of a lead cam and a trunnion.

FIG. 7 is a plan view of a bottle unit according to the present invention.

8 is a sectional view taken along line S-S of FIG.

FIG. 9 is a plan view showing an operating state of the present invention.

FIG. 10 is a plan view showing an operating state of the present invention.

FIG. 11 is a plan view showing an operating state of the present invention.

FIG. 12 is a plan view showing an operating state of the present invention.

FIG. 13 is a plan view showing an operating state of the present invention.

FIG. 14 is a plan view showing another embodiment.

FIG. 15 is a plan view showing another embodiment.

16 is a partially enlarged view of FIG.

17 is a cross-sectional view showing another example of the SS cross-sectional shape of FIG.

18 is a cross-sectional view showing another example of the SS cross-sectional shape of FIG.

19 is a cross-sectional view showing another example of the s-s cross-sectional shape of FIG.

20 is a cross-sectional view showing another example of the SS cross-sectional shape of FIG.

21 is a cross-sectional view showing another example of the SS cross-sectional shape of FIG.

22 is a cross-sectional view showing another example of the SS cross-sectional shape of FIG.

23 is a cross-sectional view showing another example of the SS cross-sectional shape of FIG.

FIG. 24 is a diagram showing another example of a sorter.

FIG. 25 is a diagram showing another example of a sorter.

FIG. 26 is a diagram showing another example of a sorter.

FIG. 27 is a diagram showing a conventional example.

FIG. 28 is a diagram showing a conventional example.

FIG. 29 is a diagram showing a conventional example.

FIG. 30 is a diagram showing a conventional example.

[Explanation of symbols]

 1 sorter 7 guide member 15 sheet discharge means 30 trunnion 40 spiral cam means B bin 200 stapler 400 stacker

Claims (1)

[Claims] 1. A sheet post-processing apparatus having at least one sheet tray capable of accommodating a sheet, and a conveying means which is provided outside the sheet tray and conveys a sheet on the sheet tray. The height of the end surface of the conveying means to enter is configured to be different from the sheet stacking surface, and a closed opening for entering the conveying means is provided near the end surface from the sheet stacking surface. Characteristic sheet post-processing device.