WO2008044774A1

WO2008044774A1 - Sheet processing apparatus

Info

Publication number: WO2008044774A1
Application number: PCT/JP2007/070004
Authority: WO
Inventors: Kazuya Igata
Original assignee: Max Co., Ltd.
Priority date: 2006-10-13
Filing date: 2007-10-12
Publication date: 2008-04-17
Also published as: JP2008094577A; JP4591432B2

Abstract

A sheet processing apparatus is provided with a feed/transfer mechanism (51), which has press rollers (33a, 33b) and feed rollers (38a, 38b) to press and hold an leading end portion of a stack of paper (3'), as shown in Fig. 6. The feed/transfer mechanism (51) is provided with rack plates (54a, 54b) to which feed rollers (38a, 38b) are turnably attached; U/D plates (53a, 53b), which are engaged with the rack plates (54a, 54b) to be removable vertically to the rack plates, and have press rollers (33a, 33b) turnably attached thereto; and a press roller shifting motor (58) for vertically driving the rack plates (54a, 54b) and the U/D plates (53a, 53b); and a feed/drive motor (59) for driving the feed rollers (38a, 38b).

Description

Specification

Paper processing device

Technical field

[0001] The present invention relates to a paper processing apparatus suitable for being applied to an apparatus for punching or binding a recording paper output from a black-and-white or color copier or printing apparatus. Specifically, it has a drive unit that drives the first coupling member with the driven roller rotatably attached and the second coupling member with the drive roller rotatably attached, and interlocks with the vertical movement of the driven roller. The drive roller can also be moved up and down so that the driven roller and the drive roller can be retracted from the paper alignment section when aligning the paper, and the paper roller can be conveyed while being sandwiched between the driven roller and the drive roller when conveying the paper. It is what

Yes

Background art

In recent years, black and white and color copiers, printing apparatuses, and the like have been used in combination with a paper processing apparatus that performs punching and binding. According to this type of paper processing apparatus, recording paper after image formation is received and punched on the downstream side of the paper using a punch function. The plurality of sheets after punching are aligned. The binding parts are automatically inserted into the punched holes of the multiple sheets after alignment. The sheet bundle 3 "in which the binding parts are inserted (ring-bound) is dropped to the discharge section by releasing the clamp (Japanese Patent Laid-Open No. 2003-320780 (page 2)). (See Figure 4)).

[0003] Meanwhile, there are cases where a plurality of sheets after punching are aligned and then discharged as a bundle of sheets without performing the ring binding process. That is, it is a case where only sheets with punched holes are aligned and dropped into the discharge section in a bundle. This is the case when a booklet is created by binding a bundle of sheets with a string, or when it is filed in a dedicated loose-leaf notebook.

[0004] Even when discharging in such a bundle of sheets, the sheet processing apparatus is provided with a sheet holding unit that temporarily holds sheets. The paper storage unit is provided with an alignment pin driving mechanism, and the paper storage unit stacks a plurality of papers that have entered from the paper conveyance path while being aligned. The stacked sheets are aligned so that the end faces and leading edges of the sheets are aligned with the reference position. The When one sheet of paper is stacked, it is discharged by releasing the pinched state by the clamp moving mechanism. However, according to the sheet processing apparatus according to the conventional example, there are the following problems when the sheet bundle is discharged as it is.

I. The conveyance timing of the sheet bundle to the discharge unit depends on the release of the clamp in the clamp moving mechanism holding the sheet bundle. For this reason, simultaneously with the release of the clamp, the sheet bundle without the binding parts is separated during the descent or the sheets are scattered.

[0006] ii. In particular, a sheet bundle in a static state is different in the time of dropping between the surface layer and the middle layer, and jammed without being dropped well to the discharge unit.

Disclosure of the invention

[0007] A sheet processing apparatus according to the present invention is a sheet processing apparatus that conveys a sheet bundle obtained by bundling a plurality of sheets, and has a driven roller and a driving roller, and has a leading end of the sheet bundle. It is equipped with a feeding and conveying mechanism that pushes in and feeds out. The feeding / conveying mechanism is engaged with a first coupling member that can be moved up and down, to which a driven roller is rotatably mounted, and can be moved up and down with respect to the vertical movement of the first coupling member, and the drive roller can be rotated. And a second driving member for driving the first and second connecting members up and down, and a second driving member for driving the driving roller. It is.

[0008] According to the sheet processing apparatus of the present invention, when a sheet bundle obtained by bundling a plurality of sheets is conveyed, the feeding and conveying mechanism presses the leading end portion of the sheet bundle and feeds it. The At this time, in the feeding and conveying mechanism, when the first driving unit bundles a plurality of sheets, the first coupling member to which the driven roller is rotatably attached and the driving roller is attached to the rotating device. The second coupling member is driven up and down. With this driving, the driving roller can be moved up and down in conjunction with the vertical movement of the driven roller.

Accordingly, the driven roller and the driving roller can be retracted from the paper aligning portion when the paper is aligned, and the second driving portion drives the driving roller when the paper is transported. Thus, the sheet bundle can be conveyed while being sandwiched. As a result, even if the sheet bundle is not subjected to the binding process with the binding component, the sheet bundle can be fed out and discharged in the state of the sheet bundle without being separated.

Brief Description of Drawings FIG. 1 is a conceptual diagram showing a configuration example of a binding device 100 to which a paper processing device as an embodiment according to the invention is applied.

FIG. 2 is a process diagram showing an example of functions of the binding device 100.

FIG. 3 is a perspective view showing a configuration example of a binder paper alignment unit 30.

FIG. 4 is a perspective view showing a configuration example of a paper curl pressing mechanism 31 and a peripheral mechanism.

FIG. 5 is a perspective view showing a configuration example of a side jogger 70 in a binder paper alignment unit 30.

FIG. 6 is a perspective view showing a configuration example of a feeding and conveying mechanism mounted on the binder paper alignment unit 30.

FIG. 7 is a front view showing an operation example when the U / D roller is opened in the feeding / conveying mechanism 51.

FIG. 8 is a front view showing an operation example of the feeding / conveying mechanism 51 when the U / D roller is closed.

FIG. 9 is a front view showing an example of operation immediately before the U / D roller is released during conveyance of a sheet bundle in the feeding conveyance mechanism 51.

FIG. 10 is a front view showing an operation example after the U / D roller is opened during conveyance of a sheet bundle in the feeding conveyance mechanism 51.

FIG. 11 is a block diagram showing a configuration example of a control system of a binder paper alignment unit 30.

FIG. 12 is a flowchart showing a control example of the bind paper alignment unit 30.

BEST MODE FOR CARRYING OUT THE INVENTION

[0011] The present invention provides a sheet processing apparatus that can feed, convey, and discharge a sheet bundle in a state where the sheet bundle is not scattered even when the sheet bundle is not bound with binding components. The purpose is to do.

Hereinafter, a sheet processing apparatus according to an embodiment of the present invention will be described with reference to the drawings. The binding device 100 shown in FIG. 1 constitutes an example of a paper processing device, which punches recording paper (hereinafter simply referred to as paper 3) output from a copier or printing device, and punches holes at predetermined positions. And aligning the positions of the sheets and bundling a plurality of sheets 3 'to form a sheet bunch 3 ". The sheet bunch 3" obtained by bundling a plurality of sheets 3' in this way is bound. It is transported to part 40. The bind processing unit 40 performs a binding process with a predetermined binding component (consumable) 43 and discharges it.

The binding device 100 has a device main body (housing) 101. The apparatus main body 101, which is preferably used side by side with a copying machine, a printing machine (image forming apparatus), and the like, has a height similar to that of a copying machine, a printing machine, or the like. In the apparatus main body 101, a paper transport unit 10 that constitutes an example of a paper transport unit is provided. The paper transport unit 10 has a first transport path 11 and a second transport path 12. The transport path 11 has a paper feed port 13 and a discharge port 14, and has a through-pass function for transporting the paper 3 drawn from the paper feed port 13 toward the discharge port 14 at a predetermined position. Les.

Here, the through-pass function means that the conveyance path 11 located between the upstream copying machine or printing machine and the downstream downstream sheet processing apparatus is connected from the copying machine or printing machine to another sheet processing apparatus. This is a function that directly delivers paper 3 to the hand. When this through-pass function is selected, the later-described transport roller acceleration processing, binding processing, and the like are omitted. Paper 3 is usually sent face-down for single-sided copying. A paper feed sensor 111 is attached to the paper feed port 13, detects the leading edge of the paper 3, and outputs a paper feed detection signal (not shown) to the control unit 50.

The transport path 12 has a switchback function that can switch the transport path from the transport path 11. Here, the switchback function decelerates and stops the conveyance of the sheet 3 at a predetermined position on the conveyance path 11, and then switches the conveyance path of the sheet 3 from the conveyance path 11 to the conveyance path 12. The function to send in the reverse direction. A flap 15 is provided in the transport path 11 so that the transport path is switched from the transport path 11 to the transport path 12.

[0016] Three transfer rollers 17c, 19a 'and 19a are provided at a switching point between the transfer path 11 and the transfer path 12. The transport rollers 17c and 19a rotate clockwise, and the transport roller 19a 'rotates counterclockwise. For example, the transport roller 19a ′ is a driving roller, and the transport rollers 17c and 19a are driven rollers. The paper 3 taken in by the transport rollers 17c and 19a 'decelerates and stops, but when the flap 15 is switched from the upper position to the lower position, it is fed by the transport rollers 19a' and 19a and transported to the transport path 12. Is done. A paper detection sensor 114 is provided in front of the triple transport rollers 17c, 19a 'and 19a, and the front edge of the paper and The rear end side is detected and a paper detection signal (not shown) is output to the control unit 50.

A punch processing unit 20 is disposed on the downstream side of the transport path 12. In this example, the conveyance path 11 and the conveyance path 12 are designed to have a predetermined angle. For example, a first depression angle θ 1 is set between the conveyance surface of the conveyance path 11 and the sheet punching surface of the punch processing unit 20. Here, the paper perforated surface is a surface for perforating the paper 3. The punch processing unit 20 is disposed so as to set the sheet punching surface at a position having a depression angle θ 1 with respect to the transport surface of the transport path 11.

[0018] In the punch processing unit 20, two or more binding holes (hereinafter referred to as punch holes 3a and! /, As shown in FIG. 2) are formed on one end of the paper 3 that is switched back from the transport path 11 and transported by the transport path 12. (See B). The punch processing unit 20 includes, for example, a motor 22 that drives a punch blade 21 that can reciprocate. The sheets 3 are punched one by one by a punch blade 21 driven by a motor 22.

In the punch processing unit 20, an openable / closable fence 24 serving as a reference for a punching position is provided and used to contact the paper 3. Further, the punch processing unit 20 is provided with a side jogger 23 to correct the posture of the paper 3. For example, the leading edge of the paper 3 is brought into contact with the openable / closable fence 24 evenly. The fence 24 serves as a position reference when aligning the edge of the paper. A paper detection sensor 118 is disposed in front of the side jogger 23 to detect a front edge and a rear edge of the paper and to output a paper detection signal (not shown) to the control unit 50.

The punch processing unit 20 stops the paper 3 by contacting the fence 24 and then punches the leading edge of the paper 3. A punch residue storage unit 26 is provided below the punch processing main body so as to store punch scraps cut off by the punch blade 21. A discharge roller 25 is provided on the downstream side of the punch processing unit 20, and the paper 3 ′ (see B in FIG. 2) after paper punching is conveyed to the next unit.

[0021] A binder paper alignment unit 30 is disposed downstream of the punch processing unit 20, and the positions of the punch holes 3a of a plurality of sheets 3 'discharged from the punch processing unit 20 are aligned and temporarily held ( Accumulation). The binder paper alignment unit 30 is disposed so as to set the paper holding surface at a position having the second depression angle Θ 2 with respect to the conveyance surface of the conveyance unit 11. here The paper holding surface is a surface that holds (stacks) the paper 3 ′ on which the punch holes 3a are formed. In this example, the relationship between the depression angle θ 1 and the depression angle Θ 2 is set to θ 1 <Θ 2. For depression angle θ 1, 0 ° <Θ 1 <45 ° is set, and for depression angle Θ 2, 0. Set to <Θ 2 <90 ° respectively. This setting is for reducing the width of the main unit 101 and for conveying the sheet 3 ′ linearly under this condition.

The binder paper alignment unit 30 has a paper curl pressing mechanism 31. The paper curl pressing mechanism 31 is disposed near the paper entrance in the unit 30 and guides the paper 3 ′ to a predetermined position (paper holding unit 32, etc.) of the binder paper alignment unit 30 when the paper enters. When the entry is completed, the rear edge of sheet 3 'is pressed (see Figs. 3 and 4).

In addition, the binder paper alignment unit 30 has a paper front end and end width alignment function.

In this example, the unit 30 is provided with a multi-spindle rotating member (hereinafter referred to as a paddle roller 37), and when the paper enters, the front end of the paper 3 'is brought into contact with the reference position, and the side edge portion is widened. To align the stack of paper. The node paper aligning unit 30 has a clamp moving mechanism 80. The clamp moving mechanism 80 is configured to move the sheet bundle 3 ″ (see C in FIG. 2) in which the sheets 3 ′ after the sheet punching are stacked by the clamp member and move in the sheet conveying direction I.

In addition, a bind processing unit 40 is arranged on the downstream side of the binder paper aligning unit 30, and a plurality of paper bundles 3 "aligned by the unit 30 are bound by a binding component 43 to form a booklet 90 (FIG. (Refer to D of 2)) The booklet 90 is a sheet bundle 3 "in which the binding component 43 is fitted and bound. In this example, the bind processing unit 40 has a moving mechanism 41. The movement mechanism 41 moves so as to reciprocate between the paper conveyance direction I of the binder paper alignment unit 30 and the position orthogonal to the conveyance direction of the conveyance unit 11 described above. The binding processing unit 40 has a binder (binding component) cassette 42. A plurality of binding parts 43 are set in the binder cassette 42. The binding component 43 is, for example, injection molded, and a plurality of types are prepared according to the thickness of the sheet bundle 3 ″.

[0025] For example, the moving mechanism 41 pulls out and holds one binding component 43 from the binder cassette 42 at a position orthogonal to the paper conveyance direction I of the conveyance unit 11, and in this state, the movement of the binder paper alignment unit 30 Rotate to a position where you can see the paper transport direction I. At this position, the nod processing unit 40 receives the sheet bundle 3 "in which the punch holes 3a are positioned from the binder paper alignment unit 30. Insert the binding part 43 into the punch hole 3a and execute the binding process (automatic bookbinding function).

).

A discharge unit 60 is disposed on the downstream side of the bind processing unit 40, and the booklet 90 created by the bind processing unit 40 is discharged. The discharge unit 60 includes, for example, a first belt unit 61, a second belt unit 62, and a stat force 63. The belt unit 61 receives the booklet 90 falling from the binder paper alignment unit 30 and switches the sending direction. For example, the belt unit main body is turned in a predetermined discharge direction from a position where the binder paper alignment unit 30 can see through the paper conveyance direction I. The belt unit 62 constitutes an example of a booklet transport unit, and receives the booklet 90 whose sending direction is switched by the belt unit 61 and relays it. The stat force 63 constitutes an example of a booklet accumulating unit, and accumulates the booklet 90 conveyed by the belt units 61 and 62.

[0027] Next, a paper processing method according to the present invention will be described with reference to FIGS. Sheet 3 shown in A of FIG. 2 is fed from the upstream side of the binding device 100. The punch hole 3a is not opened. The sheet 3 is transported toward a predetermined position on the transport path 11 shown in FIG. 1, and is decelerated and stopped at a predetermined position on the transport path 11. Thereafter, the conveyance path of the sheet 3 is switched from the conveyance path 11 to the conveyance path 12, and the sheet 3 is sent in the reverse direction and conveyed to the punch processing unit 20.

In the punch processing unit 20, as shown in B of FIG. 2, a predetermined number of binding punch holes 3 a are punched at one end of the paper 3. The sheet 3 ′ on which the binding punch holes 3 a are formed is transported to the sheeter sheet aligning unit 30. In the binder sheet aligning unit 30, when the sheet 3 'reaches the preset number of sheets and becomes the sheet bundle 3 "shown in FIG. 2C, the binding punch holes 3a are aligned and bound. The binding part 43 is inserted into the punch hole 3a in cooperation with the processing unit 40. Thus, the ability to obtain a booklet 90 as shown in FIG. S can.

Next, a configuration example of the binder paper alignment unit 30, the paper curl pressing mechanism 31, and the peripheral mechanism will be described with reference to FIGS. 3 and 4. The binder paper alignment unit 30 shown in FIG. 3 shows a state where the shutter 83 is opened. The unit 30 is the paper shown in Fig. 1. A plurality of sheets 3 ′ conveyed by the conveyance unit 10 are brought into contact with the reference position, aligned and stacked temporarily at the positions of the punch holes 3 a of the sheet bundle 3 ”. The binder sheet alignment unit 30 is It has a paper holding section 32. The binder paper alignment unit 30 has a paper curl pressing mechanism 31 in the vicinity of the paper entrance.

The paper curl pressing mechanism 31 is a pair of curl fences that are rotationally driven at the paper entry position.

34a and 34b are opposed to each other at a paper entry allowance interval, and a plurality of protrusions 342 are erected at predetermined intervals on the peripheral surface of each of the facing surfaces of the curl fences 34a and 34b. The front end side is guided between the adjacent protrusions 342 by the curl fences 34a and 34b, and the protrusion 342 is retracted from the lower surface of the paper 3 'when passing the paper, and the paper 3' is pushed by the next protrusion 342. The rear end side is pressed.

The paper holding unit 32 accumulates and temporarily holds the paper 3 ′ whose rear end side is pressed by the paper curl pressing mechanism 31. A sheet bundle conveyance path is formed before and after the sheet carry-out port. In the vicinity of the paper carry-out port of the paper holding unit 32, a shirt 83 that constitutes an example of a paper bundle carrying opening / closing mechanism is provided, and the paper bundle carrying path is closed when the paper bundle is aligned. On the inner side of the shutter 83 (on the paper storage portion 32 side), the clamp member including the movable upper arm 801b and the fixing lower arm 801a of the clamp moving mechanism 80 is opened, and the paper 3 'is bundled in this state. When the paper is carried out, the shutter 83 is opened, the paper bundle is sandwiched between the upper arm 801b and the lower arm 801a and carried out to the next process.

[0032] The paper curl pressing mechanism 31 shown in FIG. 4 is taken out from the binder paper alignment unit 30 shown in FIG. 3, and includes curl fence portions 34a and 34b, rear guide portions (introduction guides) 304a and 30 4b (FIG. 3). Reference) and curl guide portions (traveling guides) 305a, 305b and the like. Curl fence sections 34a and 34b are provided on the left and right sides of the sheet storage section 32 near the sheet entrance. Carno Fence 34a, 34bi, Paper Shinjinji Ryoko, Lya Guide 304a, 304bi Guided by the front edge of paper 3 'between adjacent protrusions 342 with curl fences 34a, 34b, passing the paper Occasionally, the protrusion 342 is retracted from the lower surface of the sheet 3 ′, and the rear protrusion 342 operates to press the rear end side of the sheet 3 ′.

[0033] The left and right curl fence portions 34a and 34b are attached to a power transmission shaft (curl fence shaft) 307. One end of the power transmission shaft 307 is connected to the motor 30 via a reduction gear 309. 1 is attached. The motor 301 constitutes an example of a drive unit, and rotates the curl fence units 34a and 34b in a predetermined direction. The curl fence part 34a includes a disk-shaped rotating main body part 341 and a plurality of protrusions 342. The rotary body 341 has a shaft 34 la. A power transmission shaft 307 is attached to the shaft portion 341a.

[0034] On the circumferential portion of the rotary main body 341, for example, four protrusions 342 are arranged every 90 °. Each protrusion 342 has a shape protruding in a direction parallel to the shaft portion 341a. If the curl fence portion 34a is configured in this manner, the curled paper 3 ′ can be pressed by the protrusions 342 while the paper alignment is temporarily suspended. For example, the protruding portion 342 is rotated upward every time the paper enters, so that the state where the curled portion of the paper 3 ′ being stacked can be pressed can be maintained. The structure and function of the curl fence part 34b are also configured in the same manner as the curl fence part 34a and function in the same manner, and thus description thereof is omitted.

In the vicinity of the left and right curl fence portions 34a, 34b, rear guide portions 304a, 304b force S shown in FIG. The rear guide portions 304a and 304b guide the leading end portion of the paper 3 ′ entering the binder paper aligning unit 30 in a predetermined direction. The above-described rear guide portions 304a and 304b have a spatula-like protruding piece (not shown) and a rotatable structure. With this rotating structure, it is possible to force the paper 3 'to be guided up to the immediate vicinity of the curl fence sections 34a, 34b. Even if the curled paper 3' enters, the curl fence sections 34a, 34b This can prevent a situation in which a crash occurs and prevent jamming caused by this collision.

[0036] Below the power transmission shaft 307 connecting the above-described curl fence portions 34a and 34b, the guide guides 305a and 305b are provided. The car nore guide rollers 305a and 305b guide the paper 3 'guided by the rear guide rollers 04a and 304b to the paper storage unit 32. The curl guide portions 305a and 305b have a structure fixed at a position away from the paper alignment surface of the paper storage portion 32. For example, the curl guide portions 305a and 305b are fixed to a pair of guide support bars 303a and 303b that are passed to the left and right of the paper entrance.

[0037] An upper guide 310 is attached to the guide support rod 303b to hold the bottom of the paper 3 'and guide it to the paper holding section 32. The curl guide portions 305a and 305b are, for example, injection molded products made of resin, and the bottom portion has an arcuate R surface when viewed from above. The size is 20mm to 30mm in width and 60mm to 80mm in length. The height is about 8mm to 10mm. In this way, when the curled paper 3 'enters, the force that the paper 3' tries to lift can be reduced, and jamming caused by the entrance of the curled paper 3 'can be prevented. .

[0038] The above-described rear guide portion 304a includes a cam 311 that is interlocked with the curl fence portion 34a. When the paper entry is completed, the cam 311 is driven to retract from the rotation trajectory of the curl fence section 34a. For example, the cam 311 of the rear guide part 304a is coupled by followering and is interlocked with the rotation of the curl fence part 34a. In this way, the curl fence part 34a rotates simultaneously with the rotation of the curl fence part 304a, and when the paper has been entered, the curl fence part 34a can be prevented from retracting and interfering with the protrusions. . However, since the rear guide portion 304a can be rotated, a guide can be formed up to the immediate vicinity of the curl fence portion 34a, and jamming can be prevented. Regarding the cam 311 and the follower ring, the curl fence part 34b is also configured and functions in the same manner as the curl fence part 34a, and thus the description thereof is omitted.

[0039] A side jogger 70 is provided inside the paper exit of the paper storage unit 32 shown in FIG. 3, and when the paper bundle is aligned, the width adjusting members are pressed from both sides of the paper bundle 3 ", It is made to align the width of the stack of 3 ". An alignment pin drive mechanism is provided on the downstream side of the side jogger 70, that is, in the vicinity of the paper exit of the unit body, and the paper bundle 3 'is rearranged using the punch holes 3a opened in the paper 3'. Is made. When the paper is carried out, the width adjusting member in the side jogger 70 is retracted to both sides of the paper bundle 3 ".

[0040] In addition to the side jogger 70, press rollers 33a, 33b and feeding rollers 38a, 38b (see FIG. 6) are arranged inside the paper exit of the paper holding section 32, and a paper bundle 3 " When discharging the to the next process, the sheet bundle 3 "is pressed from the front and back. A shutter 83 is provided at the paper exit, and operates to open and close the paper bundle conveyance path. For example, when the shirt 83 is opened, the above-mentioned press rollers 33a and 33b and the feeding rollers 38a and 38b convey (discharge) the sheet bundle 3 "along the sheet bundle conveyance path. If the paper discharge roller is configured as described above, even if the sheet bundle 3 "is not bound by the binding component 43, the sheet bundle 3" can be carried out to the next process while maintaining the bundle state. Next, with reference to FIG. 5, a configuration example of the side jig 70 in the binder paper alignment unit 30 will be described. In this example, the side jogger 70 has a width reference guide 72b that serves as a reference for the end face of the paper 3 'and a width adjustment guide 72a that presses the paper 3' one by one against the width reference guide 72b. The two width adjusting guides 72a and the width adjusting reference guide 72b are both driven independently. For example, the side jogger 70 is arranged so that the sheets 3 ′ are aligned one by one and pressed to the reference side for alignment. As a result, the width of the paper 3 ′ temporarily held in the binder paper alignment unit 30 can be aligned (paper edge alignment processing).

A side jogger unit 70 shown in FIG. 5 is provided in the binder paper alignment unit 30 shown in FIG. The side jogger 70 includes a main body casing 71, a width adjusting guide 72a, a width adjusting reference guide 72b, rails 73a and 73b, motors 74a and 74b, and moving stages 75a and 75b. The main body casing 71 has an upper surface portion and a back surface portion. The main body casing 71 is formed in a box shape by bending an iron plate. The upper surface of the box is open. In this example, the back portion of the main body casing 71 is a motor attachment region. The upper surface portion is a moving stage region.

[0043] In the moving stage area, a width adjusting guide 72a, a width adjusting reference guide 72b, rails 73a and 73b, and moving stages 75a and 75b are arranged. For example, between the walls of the inside of the main body casing 71, the Lenore 73a and 73b are installed to cross the bridge. The lenores 73a and 73b are attached so that the two round bars are fixed at positions passing through the right end and the left end of the main body casing 71. A pair of moving stages 75a and 75b are engaged with the rails 73a and 73b so as to move left and right. The moving stages 75a and 75b are made of, for example, resin molded parts. The moving stages 75a and 75b are provided with openings (not shown) penetrating left and right, and rails 73a and 73b are provided in the openings. Passed.

[0044] A width adjusting guide 72a is attached to the upper right end of the moving stage 75a, and a width adjusting reference guide 72b is attached to the upper left end thereof. As the width alignment guide 72a and the width alignment reference guide 72b, for example, a steel plate bent into a deformed U shape is used. The width adjusting guide 72a and the width adjusting reference guide 72b are configured such that the upstream side is wide and the downstream side is narrow. This is because the curled paper 3 ′ is guided to the front end of the paper holding section 32 with good reproducibility. The upstream side of the width aligning guide 72a and the width aligning reference guide 72b has a shape (flap) in which the upper end is raised for paper guidance, and the lower end has a shape that hangs in the opposite direction. These shapes are provided to guide the sheet 3 ′ sent from the punch processing unit 20 to the clamp moving mechanism 80 together with the paddle roller 37.

In addition, motors 74 a and 74 b are attached to the motor attachment region provided in the rear part of the main body casing 71. Stepping motors are used for the motors 74a and 74b, respectively. In the motors 74 a and 74 b, the motor rotation shafts are provided so as to penetrate from the back surface portion to the top surface portion of the main body casing 71. A belt drive pulley (not shown) is attached to the motor rotation shaft of the motor 74a, and a belt drive pulley is also attached to the motor rotation shaft of the motor 74b. A driven pulley 77a is attached to the upper surface portion of the main body casing 71. An endless belt 78a is engaged between a pulley for driving the belt of the motor 74a and a pulley 77a for driving. Similarly, an endless belt 78b is engaged between a belt driving pulley of the motor 74b and a driven pulley 77b. In this example, only one of the opposing belts 78a and 78b is restrained by the moving stages 75a and 75b. These members constitute a side jogger 70.

Next, with reference to FIG. 6, a configuration example of the feeding / conveying mechanism 51 mounted on the binder paper alignment unit 30 will be described. The feeding / conveying mechanism 51 shown in FIG. 6 is taken out from the binder paper aligning unit 30 shown in FIG. 3, and is configured to press and feed the leading end of the sheet bundle 3 ″. Is mounted on the binder paper aligning unit 30 (paper holding unit). The feeding / conveying mechanism 51 is disposed at the leading end of the sheet bundle 3 ". The reason why the feeding / conveying mechanism 51 is arranged at this position is so that the sheet bundle 3 "can be fed out and conveyed as stably as possible.

[0047] The feeding and conveying mechanism 51 includes press rollers 33a and 33b, feeding rollers 38a and 38b, a shaft 52 for a press roller, U / D plates 53a and 53b, rack plates 54a and 54b, press roller guides 55a and 55b. , A motor 58 for moving the press roller, a motor 59 for feeding drive, and an HP sensor 115 for the press roller.

[0048] In this example, the U / D plate 53a for moving the press roller, which constitutes an example of the first coupling member (first link), is attached to the left side of the shaft 52 with screws 501 when viewed from the Y direction in the figure. Et It is. On the right side, a U / D plate 53b for moving the press roller, which is similarly configured, is attached by screws 502, and these three members form the feeding / conveying mechanism 51 in the form of a gate (gate). The shaft 52 forms a shaft portion of the press rollers 33a and 33b. For the shaft 52, a metal bar having a predetermined thickness and length is used. As the U / D plates 53a and 53b, those obtained by bending and punching a metal plate having a predetermined thickness are used. Long holes are opened at predetermined positions of the U / D plates 53a and 53b.

[0049] Two press rollers 33a and 33b constituting an example of a driven roller are rotatably attached to a predetermined position at which the shaft 52 is divided into approximately three equal parts. The press rollers 33a and 33b are made of resin so that the resistance during conveyance of the paper bundle is reduced. The press rollers 33a and 33b are linked to the driving means by a rack and pinion via a coupling mechanism 56 so as to move between a retracted position during the paper alignment operation and a paper bundle nipping position during the paper bundle conveyance. Has been.

[0050] In this example, a second coupling member (second link) is coupled to the left and right U / D plates 53a, 53b via a coupling mechanism 56. The second coupling member is composed of rack plates 54a and 54b for press-up and down (press U / D). The U / D plate 53a is connected to the rack plate 54a, and the U / D plate 53b is connected to the rack plate 54b. A bearing fixing member 542 is movably engaged with the rack plate 54b. A rotary bearing portion (material) 543 is attached to the bearing fixing member 542. A roller shaft 544 is bridged between the rotary bearing portions 543, and feeding rollers 38a and 38b for conveyance constituting an example of a driving roller are rotatably attached to the roller shaft 544. The feeding rollers 38a and 38b are disposed so as to be positioned below the sheet bundle 3 ". The feeding rollers 38a and 38b have a frictional force sufficient to convey the sheet bundle 3", for example, a high level of hard rubber or the like. It is composed of a friction elastic body.

[0051] In this example, the above-described connecting mechanism 56 is configured to slidably connect the U / D plate 53a and the rack plate 54a, and the U / D plate 53b and the rack plate 54b via biasing members, respectively. The structure is taken. For example, concave grooves 545 and 546 (see FIG. 6) for sliding are provided on the side surfaces (outer surfaces) that are not opposed to the rack plates 54a and 54b. Both sides in the longitudinal direction of the U / D plate 53a are slidably engaged with the concave groove portion 545 of the rack plate 54a, and the U / D plate 53b is similarly engaged with the concave groove portion 546 of the rack plate 54b. Is slidably engaged. [0052] Protrusions 51 1 and 512 (see FIG. 8) for spring engagement are respectively provided at predetermined positions on the sides where the U / D plates 53a and 53b face each other. The protrusion 511 is inserted into the long hole 513 of the rack plate 54a, and the protrusion 512 is inserted into the long hole 514 (see FIG. 8) of the rack plate 54b so that the protrusions 511 and 512 face each other. Made. Panel-engaged projections 515 and 516 (see FIG. 8) are provided at predetermined positions on opposite sides of the rack plates 54a and 54b.

In the coupling mechanism 56, for example, the urging member 56a is attached between the projection 511 of the U / D plate 53a and the projection 515 of the rack plate 54a. A biasing member 56b (see FIG. 8) is attached between the protrusion 512 of the U / D plate 53b (see FIG. 8) and the protrusion 516 of the rack plate 54b. A spring coil panel is used for each of the urging members 56a and 56b, and the U / D plates 53a and 53b are urged in the direction of sandwiching the sheet bundle 3 "with respect to the rack plates 54a and 54b. .

On the other hand, a motor 58 for moving the press roller constituting the first drive unit is disposed at a predetermined position of the feeding / conveying mechanism 51, and the U / D plates 53a and 53b and the rack plates 54a and 54b are connected to each other. It is made to drive up and down. The feeding / conveying mechanism 51 has a power shaft 521. A pinion gear 522 is attached to one end of the power shaft 521. A pinion gear (not shown) is attached to the other end of the shaft 521. The other pinion gear (not shown) drives the left rack gear 523.

[0055] A reduction gear 59b is engaged with the motor 58, and the motor rotation speed is reduced based on a predetermined gear ratio. A pinion gear 522 is engaged with the reduction gear 59b. The rack plate 54b has a rack gear 523. A rack gear 523 is engaged with the pinion gear 522. The rack gear 523 operates so as to receive a motor rotation force of a predetermined rotation speed reduced by the reduction gear 59b through the pinion gear 522 and to reciprocate (up and down movement). The rack plates 54a and 54b operate integrally with the left and right rack gears 523. If the connection mechanism 56 is configured in this way, the U / D plates 53a and 53b can be engaged with the rack plates 54a and 54b so as to be movable up and down. In addition, when the sheet bundle 3 "is sandwiched between the press rollers 33a and 33b and the feeding rollers 38a and 38b, the pressing force depending on the thickness of the sheet bundle 3" is generated. [0056] At another predetermined position of the feeding / conveying mechanism 51, a feeding driving motor 59 constituting the second driving unit is arranged to drive the feeding rollers 38a and 38b. As the motor 59, a stepping motor is used. A reduction gear 59a is engaged with the motor 59, and the motor rotation speed is reduced based on a predetermined gear ratio. A gear 531 for driving the feeding roller is engaged with the reduction gear 59a. The feeding rollers 38a and 38b are attached to the rotation shaft of the gear 531. As a result, the feeding rollers 38a and 38b can be linked to a motor 59 such as a stepping motor.

[0057] In this example, the rack plate 54b is provided with a long hole portion 541 having an oblique shape (character shape: see FIG. 8) with respect to the hanging direction at a predetermined position. The rectangular shape of the long hole portion 541 is arranged so as to fall as it moves in the paper transport direction I. The elongated hole portion 541 is engaged with an end portion of a bearing fixing member 542 (lever). The end portion of the bearing fixing member 542 is a rod-like end that forms the rotation fulcrum shaft of the rotary bearing portion 543 to which the feeding rollers 38a and 38b are rotatably attached. With this configuration, when the rack plates 54a and 54b are lowered, the feeding rollers 38a and 38b can be projected onto the sheet conveyance path. This is because the end portion of the bearing fixing member 542 traces the rectangular shape of the long hole portion 541.

[0058] On the left side of the above-described press roller 33a, there is provided a press roller guide 55a for paper guidance that constitutes an example of a conveyance auxiliary member. The press roller guide 55a is attached by screws 503 and 504. Similarly, a press roller guide 55b for paper guidance is also provided on the right side of the press roller 33b. The press roller guide 55b is attached by screws 505 and 506. The press roller guides 55a and 55b are structured to move up and down simultaneously with the press rollers 33a and 33b that move up and down in conjunction with the up and down movement of the U / D plates 53a and 53b.

[0059] For the press roller guides 55a and 55b, for example, a metal plate having a predetermined thickness is bent and punched into a U shape. When the press roller guides 55a and 55b are configured in this way, the sheet bundle 3 "can be transferred to the press rollers 33a and 33b from the side jogger 70 where the conveyance guide is not cut, and the sheet bundle 3" is conveyed. Guide in the direction with good reproducibility.

[0060] In this example, a sensor for detecting the home position of the press rollers 33a and 33b constituting an example of the detection means (hereinafter referred to as HP for the press roller) is located below the right rack plate 54b. Sensor or simply HP sensor 115), and detects the press conveyance home position of the rack plate 54b and outputs a roller detection signal S15 (position detection information). The feeding drive motor 58 rotates the feeding rollers 38a and 38b on the basis of the spot detection signal S15 obtained from the HP sensor 115 for the press roller. In this way, when the HP sensor 115 detects the position where the rack plates 54a and 54b are pulled by the feeding and conveying mechanism 51, the conveyance of the sheet bundle 3 "can be started.

Subsequently, an operation example of the feeding / conveying mechanism 51 will be described with reference to FIGS. 7 to 10 are views seen from the X direction in FIG. First, in the feeding / conveying mechanism 51 shown in FIG. 7, when the sheets are aligned, the press roller 33a (33b) and the feeding roller 38a (38b) are opened. This state is obtained when the rack gear 523 rotates the pinion gear 522 in the counterclockwise direction via the reduction gear 59b by the motor 58 and the rack gear 523 is raised by the pinion gear 522 from the closed state of the feeding / conveying mechanism 51. As a result, the rack gear 523 is fully raised. At this time, the HP sensor 115 for the press roller outputs a roller detection signal S15 indicating that the rack plate 54a is away from the home position HP to the control unit 50. The paper detection sensor 116 detects the paper bundle 3 "and outputs a paper detection signal S16 to the control unit 50. For example, the paper detection sensor 116 outputs a high level (hereinafter referred to as" H "level) paper detection signal S16. To do.

Next, in the feeding / conveying mechanism 51 shown in FIG. 8, the press roller 33a (33b) and the feeding roller 38a (38b) are closed when the sheet is conveyed. This state is obtained by causing the rack gear 523 to rotate the pinion gear 522 clockwise via the reduction gear 59b by the motor 58 and lowering the rack gear 523 by the pinion gear 522 from the state shown in FIG. As a result, the rack gear 523 is lowered and the leading end of the sheet bundle 3 "is held. At this time, the HP sensor 115 for the press roller has the rack plate 54a at the home position HP. The roller detection signal S15 indicating the state is output to the control unit 50. The sheet detection sensor 116 detects the sheet bundle 3 "and outputs the sheet detection signal S16 to the control unit 50. For example, the paper detection sensor 116 outputs a low level (hereinafter referred to as “L” level) paper detection signal S 16.

[0063] Further, in the feeding and conveying mechanism 51 shown in FIG. The sheet bundle 3 "is conveyed in a state where a and the feeding roller 38a (38b) are closed. In this example, the sheet bundle 3" is conveyed from the left (upstream side) to the right (downstream side). 6 is obtained by rotating the motor 59 shown in FIG. 6 in the clockwise direction and rotating the gear 531 in the counterclockwise direction via the reduction gear 59a. Thus, the leading end of the sheet bundle 3 ”shown in FIG. Then, the press roller 33a (33b) and the feed roller 38a (38b) are closed at the rear end, and the sheet bundle 3 "is moved to the position immediately before the completion of discharge. The HP sensor 1 15 still detects the home position of the rack plate 54a, and the paper detection sensor 11 6 also detects the paper stack 3 ".

Further, in the feeding and conveying mechanism 51 shown in FIG. 10, when the paper is discharged, the paper bundle 3 ″ is discharged with the press roller 33a (33b) and the feeding roller 38a (38b) being opened. The discharged state is obtained by the rack gear 523 rotating the pinion gear 522 counterclockwise by the motor 58 via the reduction gear 59b and lifting the rack gear 523 by the pinion gear 522 from the closed state of the feeding and conveying mechanism 51.

As a result, the rack gear 523 is fully raised, and the press roller 33a (33b) and the feed roller 38a (38b) are opened and closed from the rear end of the sheet bundle 3 "shown in FIG. In this state, the motor 59 shown in Fig. 6 rotates clockwise and the gear 531 rotates counterclockwise via the motor 59a, so that the sheet bundle 3 "moves from the left (upstream side) to the right (upstream). Discharged downstream). At this time, the HP sensor 115 for the press roller outputs a roller detection signal S 15 indicating that the rack plate 54ba is away from the home position HP to the control unit 50. The paper detection sensor 116 outputs a paper detection signal S 16 indicating that the paper stack 3 "has been discharged to the control unit 50. For example, the paper detection sensor 116 outputs a paper detection signal S 16 of" L "level. To do.

[0066] Next, a configuration example of a control system of the binder paper alignment unit will be described with reference to FIG. 11 is connected to motor drive units 35 and 36, an HP sensor 115 for press rollers, paper detection sensors 116 and 119, a discharge roller drive unit 122, and motor drive units 180 to 185. Yes.

The paper detection sensor 119 detects the paper 3 ′ discharged from the punch processing unit 20 and outputs a paper detection signal S 19 to the control unit 50. Based on the paper detection signal S19, the control unit 50 The motor drive units 35 and 36 and the motor drive units 180 to 183 are controlled. For example, the motor control signal S36 is output to the motor drive unit 36 based on the paper detection signal S19. A motor 205 for rotating the discharge roller is connected to the discharge roller driving unit 122. The discharge roller driving unit 122 receives the motor control signal S22 from the control unit 50, drives the motor 205, and rotates the discharge roller 25. The sheet 3 ′ discharged from the punch processing unit 20 is conveyed by the rotation of the discharge roller 25 and enters the binder sheet aligning unit 30.

The motor drive unit 35 is connected with a motor 301 for rotating the curl fence. The motor drive unit 35 receives the motor control signal S35 from the control unit 50, rotates the motor 301, and drives the force rail fence units 34a and 34b. A motor 708 for rotating paddle rollers is connected to the motor drive unit 36. The motor drive unit 36 receives the motor control signal S36 from the control unit 50, rotates the motor 708, and drives the paddle roller 37.

[0069] A motor 308 for a clamp movement mechanism is connected to the motor drive unit 180. The motor driving unit 180 inputs the motor control signal S80 from the control unit 50, rotates the motor 308, and drives the clamp moving mechanism 80. For example, in the clamp moving mechanism 80, the shutter 83 is opened and the clamp member holding the sheet bundle 3 "is moved down to the next process. After that, the sheet bundle 3" is opened. The clamp member is raised and the shutter 83 is closed.

A motor 86 for driving a clamp member is connected to the motor drive unit 181. The motor drive unit 181 receives the motor control signal S81 from the control unit 50, rotates the motor 86, and drives clamp members such as the lower arm 801a and the upper arm 801b. When aligning the paper bundle, the clamp member is released. When holding the stack of paper 3 ", the clamping member is closed.

[0071] The motor driving unit 182 is connected to a motor 89 for driving the alignment pins. The motor drive unit 182 receives the motor control signal S82 from the control unit 50, rotates the motor 89, and drives the alignment pins 85a, 85b and the like. At the time of sheet bundle alignment, the alignment pins 85a and 85b are passed through the punch holes 3a of the sheet bundle 3 ".

[0072] The motor drive unit 183 is connected to motors 74a, 74b for side joggers. The motor drive unit 183 also receives the motor control signal S83 from the control unit 50 force and turns the motors 74a and 74b on. Rotate and drive the side jogger 70. When aligning the sheet bundle, the width guide 72a and the width alignment reference guide 72b of the side jogger 70 align the width direction of the sheet bundle 3 ". When discharging the sheet bundle, the width alignment guide 72a and the width alignment guide 72a are aligned. Reference guide 72b is withdrawn.

[0073] The HP sensor 115 detects the home position of the press rollers 33a and 33b and outputs a roller detection signal S15 to the control unit 50. The home position HP of the press rollers 33a and 33b is a position raised by a predetermined distance from the sheet alignment surface. The press rollers 33a and 33b come to stand by at this position.

The paper detection sensor 116 detects the paper 3 ′ temporarily held in the paper processing unit 32, and outputs a paper detection signal S16 to the control unit 50. The control unit 50 controls the motor driving units 184 and 185 based on the roller detection signal S15 and the paper detection signal S16. For example, the control unit 50 outputs a motor control signal S84 to the motor drive unit 184 and outputs a motor control signal S85 to the motor drive unit 185 based on the roller detection signal S15 and the paper detection signal S16 when the sheet bundle is discharged. .

A motor 58 for moving the press roller is connected to the motor driving unit 184. The motor drive unit 184 receives the motor control signal S84 from the control unit 50, rotates the motor 58, and moves so as to raise or lower the press rollers 33a and 33b. A motor 59 for rotating the feeding roller is connected to the motor drive unit 185. The motor driving unit 185 receives the motor control signal S85 from the control unit 50, rotates the motor 59, and drives the feeding rollers 38a and 38b. At the time of discharging the sheet bundle, the press rollers 33a and 33b and the feeding rollers 38a and 38b are configured to press the sheet bundle 3 "from the front and back to send out to the next process.

Subsequently, an example of control at the time of paper alignment in the binding device 100 will be described with reference to FIG. In this embodiment, the alignment pins 85a and 85b after the alignment of the sheet bundle are retracted, and the sheet bundle 3 "is discharged from the state in which the sheet bundle 3" is clamped by clamps (not shown) arranged on both sides. An example is given below. In this example, a case will be described in which the binding component 43 is discharged without being bound to the sheet bundle 3 ″.

With these as control conditions, a paper discharge operation start command is awaited at step ST1 of the flowchart shown in FIG. At this time, the feeding / conveying mechanism 51 shown in FIG. The rollers 33a and the feeding rollers 38a are opened. The HP sensor 115 for the press roller outputs an “H” level roller detection signal S15 indicating that the rack plate 54a is away from the home position HP to the control unit 50. Further, the sheet detection sensor 116 detects the sheet bundle 3 ″ and outputs, for example, a “H” level sheet detection signal S16 to the control unit 50.

If there is a start command from the upper control system, the press rollers 33a and 33b are closed in step ST2. At this time, in the feeding / conveying mechanism 51 shown in FIG. 8, the press roller 33a (33b) and the feeding roller 38a (38b) are moved from the state shown in FIG. 7 to the rack gear 523 via the reduction gear 59b by the motor 58. The pinion gear 522 is rotated in the clockwise direction, and the rack gear 523 is lowered by the pinion gear 522 so that the pinion gear 522 is closed. As a result, the rack gear 523 is fully lowered, and the leading edge of the sheet bundle 3 "is held. At this time, the HP sensor 115 for the press roller generates the roller detection signal S15 of" L "level. Output to control unit 50. In this example, since the end portions of the bearing fixing member 542 are engaged with the slanted elongated holes 541 of the rack plates 54a and 54b, the rack plates 54a and 54b are lowered and the feeding rollers 38a and 38b are moved. It becomes possible to project on the paper conveyance path.

Next, in step ST3, the shutter 83 is opened, and in step ST4, the upper arms 801b of the clampers 82a and 82b are opened to predetermined positions. In this example, the upper arm 801b is opened to the fully open position to facilitate the discharge of the sheet bundle 3 ". At this time, the alignment pins 85a and 85b are retracted to the outside of the sheet bundle conveyance path.

[0080] Thereafter, in step ST5, the feeding roller is rotated. At this time, according to the feeding / conveying mechanism 51 shown in FIG. 9, the sheet bundle 3 "is conveyed with the press roller 33a and the feeding roller 38a closed. In the example shown in FIG. At this time, the motor 59 shown in FIG. 6 rotates in the clockwise direction, and the gear 531 rotates in the counterclockwise direction via the reduction gear 59a.

[0081] In addition, the press roller guides 55a and 55b move up and down in conjunction with the vertical movement of the U / D plates 53a and 53b, and the sheet bundle 3 "that does not break the conveyance guide is reproducible in the sheet bundle conveyance direction. As a result, the sheet bundle 3 "is immediately discharged. HP sensor 115 for press roller still detects home position of rack plate 54b . The paper detection sensor 116 still detects the paper stack 3 ".

In step ST6, the control unit 50 monitors whether the paper detection sensor 116 is turned off.

If the paper detection sensor 116 is turned off, the process proceeds to step ST7. In step ST7, the press rollers 33a and 33b are opened. At this time, in the feeding and conveying mechanism 51 shown in FIG. 10, the sheet bundle 3 "is discharged with the press roller 33a and the feeding roller 38a being opened. The HP sensor 115 for the press roller is a rack plate 54b. Outputs “H” level roller detection signal SI 5 to the controller 50 indicating that the home position HP force is also separated. Further, the paper detection sensor 116 outputs a “L” level paper detection signal S 16 indicating that the paper bundle 3 ”has been discharged to the control unit 50.

[0083] Thereafter, the process proceeds to step ST8 to close the shutter 83, and then the process proceeds to step ST9, where the control unit 50 maintains the state that the paper detection sensor 116 is turned off! Monitor whether If the paper detection sensor 116 is kept off, the paper bundle 3 "is fed out and the conveyance process is terminated. In this case, the normal completion process is performed. If it is turned on again after it has been turned off once, the process proceeds to step ST10 and proceeds to the abnormal processing of the sheet bundle 3 ". In step ST10, for example, an error display process is executed on a display unit (not shown) to display the cause of the error. In this case, it is an abnormal termination process.

As described above, according to the sheet processing apparatus as the embodiment, when the sheet bundle 3 ″ obtained by bundling a plurality of sheets 3 ′ is conveyed, the feeding and conveying mechanism 51 includes the sheet bundle 3 ″. The tip is pushed in and fed out. At this time, in the feeding / conveying mechanism 51, when a plurality of sheets 3 'are bundled, the press roller moving motor 58 is provided with rack plates 54a, 54b to which the feeding rollers 38a, 38b are rotatably attached, and the press roller 33a. , 33b, and U / D plates 53a and 53b, which are rotatably mounted, are driven up and down. By this driving, the feeding roller 38a, 38b can be moved up and down in conjunction with the vertical movement of the press rollers 33a, 33b.

Accordingly, when the paper is aligned, the press rollers 33a and 33b and the feeding roller are provided from the paper storage unit 32.

38a, 38b can be withdrawn, and the feeding drive motor 59 force S feeding rollers 38a, 38b are driven during paper transport, so press rollers 33a, 33b and feeding rollers 38a and 38b can be transported while sandwiching the sheet bundle 3 ". This allows the sheet bundle 3" to be unbound even when the binding section does not bind the sheet bundle 3 ". It can be transported and discharged stably in the 3 "state.

In this embodiment, when the motor 58 for moving the press roller, the rack plates 54a and 54b, and the force S deceleration gear 59b are used for driving, the motor 59 for feeding driving and the feeding rollers 38a and 38b are provided. Force S described in the case of driving through the reduction gear 59a, etc., is not limited to this, and may be configured to be driven by a conveyor belt instead of the reduction gears 59a, 59b Industrial applicability

The present invention is extremely suitable when applied to a paper processing apparatus that performs punch processing, binding processing, paper bundling processing, and the like on recording paper output from black and white and color copiers, printing devices, and the like. is there.

Claims

The scope of the claims

[1] A paper processing apparatus for conveying a paper bundle obtained by bundling a plurality of papers,

A feeding / conveying mechanism having a driven roller and a driving roller, and pressing and feeding the leading end of the sheet bundle;

The feeding and conveying mechanism is

A first coupling member that is movable up and down, to which the driven roller is rotatably attached, and is engaged with the vertical movement of the first coupling member so as to be movable up and down, and the drive roller is rotatable. An attached second coupling member;

A first drive unit for driving the first and second coupling members up and down;

And a second drive unit that drives the drive roller.

[2] A conveyance assisting member for paper guidance is provided on the shaft portion for the driven roller attached to the first coupling member,

The conveyance auxiliary member is

2. The sheet processing apparatus according to claim 1, wherein the sheet processing apparatus is configured to move up and down simultaneously with the driven roller that moves up and down in conjunction with up and down movement of the first coupling member.

[3] A coupling mechanism that couples the first coupling member and the second coupling member,

In the connection mechanism,

2. The sheet processing apparatus according to claim 1, wherein a biasing member that biases the first coupling member in a direction in which the sheet bundle is sandwiched with respect to the second coupling member is attached.

[4] comprising a detecting means for detecting the position of the second coupling member,

The second drive unit is

2. The sheet processing apparatus according to claim 1, wherein the driving roller is rotated based on position detection information obtained from the detection means.

[5] The second coupling member is:

Provided with a long hole portion having an oblique shape with respect to the hanging direction at a predetermined position,

The drive roller is engaged with a rotary bearing member; The rotation bearing member is attached to a rod-shaped body that forms a rotation fulcrum shaft,

The sheet processing apparatus according to claim 1, wherein an end portion of the rod-like body is engaged with the elongated hole portion.