JP2013119457A - Booklet conveying mechanism, paper processing device, image forming apparatus, and image forming system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a booklet conveying mechanism for achieving an improvement in accuracy of booklet cutting processing, an increase in cutting processing speed, a reduction in cost and energy saving, a paper processing device, an image forming apparatus, and an image forming system.SOLUTION: A booklet conveying means 90 includes a conveyance position synchronization means 111 for synchronizing a conveyance position of a first conveyance means 91 with a conveyance position of a second conveyance means 99. The conveyance position synchronization means 111 includes a first link 113 which is provided with first and second rotors 117, 119 interlocked with each other and a second link 115 which is provided with the second and third rotors 119, 121 interlocked with each other. The first and second links 113 and 115 are rotatably supported on a rotating shaft 119a of the second rotor 119, the first, second, and third rotors 117, 119, and 121 are formed in a shape having the same reference circle diameter, the first conveyance means 91 and the first rotor 117 are interlocked with each other, and the second conveyance means 99 and the third rotor 121 are interlocked with each other.

Description

  The present invention relates to a booklet transport mechanism, a sheet processing apparatus including the booklet transport mechanism, an image forming apparatus including the booklet transport mechanism, and an image forming system including the sheet processing apparatus and the image forming apparatus.

  A booklet transport mechanism that binds a sheet-like recording medium (hereinafter referred to as a “sheet”) such as paper, recording paper, and transfer paper, folds the booklet, and binds the booklet. Is widely known.

  Some of these paper processing apparatuses are provided with a cutting mechanism for cutting the edge of the booklet in order to improve the quality of the booklet that has been bound, and the paper processing apparatus provided with such a cutting mechanism includes: It is called a cutting device.

  In such a cutting apparatus, in the process of cutting, the booklet is transported by a booklet transport mechanism such as a belt, and the booklet is brought into contact with a positioning stopper installed corresponding to the size of the booklet, the cutting amount, etc. Adjust. Thereafter, the booklet is fixed on the booklet transport mechanism by pressing by the pressing means, and the end of the booklet is cut by the cutting unit. As a result, the bound booklet is in a state where the ends are trimmed.

  However, in the cutting apparatus as described above, since the conveying means such as the belt is rotating with the booklet in contact with the positioning stopper, the surface sheet of the booklet is bent, and the booklet is fixed as it is and the cutting process is performed. If it does, deviation will arise in the end after processing.

  Further, in the course of the pressing process of crushing the bulge of the booklet by the pressing means, the booklet surface side or the back cover side may be bent, and further, the booklet may be pressed in a shifted state by moving back and forth. When the cutting process is performed in such a state, the end of the booklet after the process is displaced.

  Therefore, as a device for cutting a booklet so as not to cause such bending, the sheet after the folding process is fixed by pressing the pressing means with the pressing means (for example, the folding process is performed). From the edge of the sheet) to the edge while gradually applying a pressing force with a plate or a roller, so that no bending occurs between the pressed position and the seat back side. The thing is proposed (for example, refer patent document 1).

  As shown in FIG. 23A, such a cutting apparatus includes a first conveying means in which a booklet conveying mechanism 311 is configured by a first endless belt 321 that is hung on a driving pulley 317 and a driven pulley 319. 313, and a second conveying means 315 composed of a second endless belt 327 hung on the driving pulley 323 and the driven pulley 325, and the first conveying means 313 and the second conveying means 315 The booklet P is held between and conveyed.

  However, as shown in FIG. 23 (B), the conventional trimming apparatus uses the first endless belt when positioning the booklet P by a stopper (not shown) and fixing the booklet P by applying a pressing force. Since the booklet 321 moves in the direction of the arrow K and the front side of the booklet moves in the direction of the arrow J, if the cutting process is performed in this state, the edge of the booklet may be shifted and cut off at an angle. There has been a problem that the accuracy of processing may be greatly reduced.

  Further, since the first endless belt 321 moves in the arrow K direction or the opposite direction when applying the pressing force, when changing the interval between the first conveying means 313 and the second conveying means 315, There was a problem that the conveyance of the booklet had to be interrupted and there was a limit to the increase in processing speed.

  Further, each of the drive pulleys 317 and 323 is controlled by a motor so that the first endless belt 321 does not move in the arrow K direction or the opposite direction when the pressing force is applied to the booklet, or the drive pulleys 317 and 323 When each is controlled by an electromagnetic clutch, there is a problem that the cost increases and the energy consumption increases.

  The present invention aims to solve this problem. That is, the present invention provides a booklet transport mechanism capable of improving the accuracy of booklet cutting processing, increasing the cutting processing speed, reducing costs, and saving energy, a sheet processing apparatus including the booklet transport mechanism, and the booklet. An object of the present invention is to provide an image forming apparatus including a transport mechanism, and an image forming system including the sheet processing apparatus and the image forming apparatus.

  In order to solve the above-described problems and achieve the object, the booklet transport mechanism of the present invention includes a booklet transport unit that transports the booklet sandwiched between a first transport unit and a second transport unit, and the first transport unit. In the booklet transport mechanism, the booklet transport mechanism includes a transport position of the first transport means, a transport position of the second transport means, and a booklet transport mechanism having a distance adjusting means for adjusting a distance between the transport means and the second transport means. A transfer position synchronization means for synchronizing the first rotation body and the second link that are linked to each other; and a second link that is linked to each other. A second link provided with a third rotator, and the first link and the second link are rotatably supported on a rotation axis of the second rotator, and the first rotator is provided. And the second rotating body and the third rotating body have the same reference circle Are formed on, and, together with the first conveying means and said first rotary member is interlocked with each other, it is characterized in that said second conveying means and the third rotating member is interlocked with each other.

  In the booklet transport mechanism according to the present invention, the transport position synchronization unit that synchronizes the transport position of the first transport unit and the transport position of the second transport unit includes a first rotating body and a second rotation that are interlocked with each other. A first link and a second link provided with the second rotating body and the third rotating body interlocked with each other, and the first link and the second link are provided on the second rotating body. The first rotating body, the second rotating body, and the third rotating body are formed on the same reference circle diameter, and are rotatably supported on a rotating shaft, and the first conveying means and the first rotating body are formed. Since the rotary body is interlocked with each other and the second transport means and the third rotary body are interlocked with each other, the first transport is performed in order to position the booklet with the stopper and to fix the booklet by the pressing force. When the distance between the means and the second conveying means is changed The first rotating member in response to change, a second rotary member, and, even if each of the relative positions of the third rotating member is moved, each of the phase of each rotary body does not change.

  Thus, the booklet transport mechanism of the present invention positions the booklet without misalignment because the phase of each rotating body does not change and the phase of the first transport means and the second transport means does not change. In addition, the booklet can be pressed and fixed without causing an end shift. And since the booklet can be positioned and pressed and fixed without the edge being displaced, there is no possibility that the edge of the booklet will be displaced and obliquely aligned, improving the accuracy of the booklet cutting process. be able to.

  In the booklet transport mechanism of the present invention, even if the interval between the first transport means and the second transport means is changed, the phase of each rotating body does not change, and the first transport means and the second transport means. Therefore, it is possible to change the interval between the first conveying unit and the second conveying unit during the conveyance of the booklet, and it is not necessary to interrupt the conveyance in accordance with the change in the interval. And a high processing efficiency can be achieved by increasing the cutting processing speed.

  Further, the booklet transport mechanism of the present invention includes an extra motor and a motor so that the phase of the first transport means and the second transport means does not shift with a change in the interval between the first transport means and the second transport means. Since it is not necessary to provide an electromagnetic clutch, cost reduction and energy saving can be realized.

1 is an explanatory diagram for explaining a configuration of an image forming system according to a first embodiment of the present invention. FIG. FIG. 2 is a block diagram illustrating a control configuration of the image forming system illustrated in FIG. 1. FIG. 2 is an explanatory diagram for explaining a configuration of a bookbinding apparatus in the image forming system shown in FIG. 1. FIG. 2 is an explanatory diagram for explaining a configuration of a cutting processing device in the image forming system shown in FIG. 1. It is explanatory drawing for demonstrating the structure of the booklet conveyance means of the booklet conveyance mechanism in the cutting processing apparatus shown in FIG. It is explanatory drawing for demonstrating each displacement and phase of a 1st pulley and a 2nd pulley in the booklet conveyance means shown in FIG. (A) is explanatory drawing before displacement, (B) is explanatory drawing after displacement. It is explanatory drawing for demonstrating the state by which the space | interval of the 1st conveyance means and the 2nd conveyance means in the booklet conveyance means shown in FIG. 5 was narrowed. It is explanatory drawing for demonstrating the structure of the booklet conveyance means concerning the 2nd Embodiment of this invention. It is explanatory drawing for demonstrating each displacement and phase of a 1st gearwheel and a 2nd gearwheel in a booklet conveyance means shown in FIG. (A) is explanatory drawing before displacement, (B) is explanatory drawing after displacement. It is explanatory drawing for demonstrating the state by which the space | interval of the 1st conveyance means and the 2nd conveyance means in the booklet conveyance means shown in FIG. 8 was narrowed. It is a flowchart which shows the process sequence of the press process and cutting process which are performed with the cutting apparatus. FIG. 10 is an explanatory diagram for explaining a state of the bookbinding apparatus when a sheet bundle is carried in. FIG. 10 is an explanatory diagram for explaining a state of the bookbinding apparatus during saddle stitching of a sheet bundle. FIG. 10 is an explanatory diagram for explaining a state of the bookbinding apparatus when the movement to the center folding position of the sheet bundle is completed. FIG. 10 is an explanatory diagram for explaining a state of the bookbinding apparatus when a sheet bundle is folded in a middle. FIG. 10 is an explanatory diagram for explaining a state of the bookbinding apparatus at the time of paper discharge after the end of folding of a sheet bundle. It is explanatory drawing for demonstrating the state of the cutting apparatus immediately after a booklet is carried in in the cutting apparatus. It is explanatory drawing for demonstrating the state of the cutting device which presses down the booklet stopped after carrying in until it becomes fixed thickness. It is explanatory drawing for demonstrating the state of the cutting apparatus at the time of the alignment which aligns the conveyance direction of a booklet. It is explanatory drawing for demonstrating the state of the cutting apparatus at the time of the fixation which presses and fixes a booklet. It is explanatory drawing for demonstrating the state of the cutting apparatus at the time of the cutting after booklet alignment. It is explanatory drawing for demonstrating the state of the cutting apparatus after the completion | finish of cutting of a booklet. It is explanatory drawing for demonstrating the structure of the conventional booklet conveyance mechanism.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The embodiments of the present invention described below are merely representative embodiments of the present invention, and the present invention is not limited to the embodiments. Therefore, the present invention can be implemented with various modifications within the scope not departing from the gist of the present invention, that is, those that can be easily assumed by those skilled in the art, substantially the same, and so-called equivalent ranges.

(First embodiment)
FIG. 1 is a configuration diagram of an image forming system 1 according to a first embodiment of the present invention. FIG. 2 is a block diagram of the control configuration of the image forming system 1. FIG. 3 is a configuration diagram of the saddle stitching and bookbinding apparatus 4 in the image forming system 1. FIG. 4 is a configuration diagram of the cutting device 5 as a paper processing device in the image forming system 1.

  The image forming system 1 according to the first exemplary embodiment of the present invention performs a binding process on sheets such as paper, recording paper, and transfer paper recorded by an image forming apparatus such as a copying machine, a printer, and a facsimile machine. After a folding process is performed to produce a booklet, the booklet is used as an image forming system that cuts the end of the booklet and binds the booklet.

  As shown in FIG. 1, an image forming system 1 according to a first exemplary embodiment of the present invention includes an image forming apparatus 2, a sheet bundle processing apparatus 3, a saddle stitching bookbinding apparatus (hereinafter, “bookbinding apparatus”). 4) and a cutting device 5 as a paper processing device, and the image forming device 2, the sheet bundle processing device 3, the bookbinding device 4, and the cutting device 5 are connected in this order.

  In the image forming system 1 according to the first embodiment of the present invention, as shown in FIG. 2, the image forming apparatus 2 includes a CPU (Central Processing Unit) 192, a RAM (Random Access Memory), an I / O interface, and the like. And a communication port 193. The sheet bundle processing apparatus 3 includes a control circuit 194 on which a microcomputer having a CPU 195, a RAM, an I / O interface, and the like is mounted. The bookbinding apparatus 4 includes a control circuit 198 on which a microcomputer having a CPU 199, a RAM, an I / O interface, and the like are mounted, and communication ports 200 and 201. The cutting device 5 is a microcomputer having a CPU 203, a RAM, an I / O interface, and the like. The mounted control circuit 202 and the communication port 204 are provided. The image forming apparatus 2, the sheet bundle processing apparatus 3, the bookbinding apparatus 4, and the cutting apparatus 5 are respectively connected to the communication ports 193, 196, 197, 200, These are connected in series through 201 and 204.

  Further, in the image forming system 1 according to the first exemplary embodiment of the present invention, the CPU 195 of the control circuit 194 of the sheet bundle processing apparatus 3, the CPU 199 of the control circuit 198 of the bookbinding apparatus 4, and the CPU 203 of the control circuit 202 of the cutting apparatus 5. The CPU 192 of the control circuit 191 of the image forming apparatus 1 serves as a main CPU, and is controlled by the CPU 192 and functions as a sub CPU. In other words, each of the sheet bundle processing device 3, the bookbinding device 4, and the cutting device 5 is controlled by the CPUs 195, 199, and 203 mounted therein, and systematic control is executed by the CPU 192 of the image forming apparatus 2.

  The control executed by each of the sheet bundle processing device 3, the bookbinding device 4, and the cutting device 5 is performed by using the program code stored in the ROM of the control circuit 194, 198, 202 of each device as the control circuit 194 of each device. CPUs 195, 199 and 203 of 198 and 202 are read and executed based on the program defined by the program code while using the RAMs of the control circuits 194 and 198 and 202 of each device as a work area and a data buffer.

  The CPU 195 of the control circuit 194 of the sheet bundle processing apparatus 3 mutually communicates with the CPU 192 of the control circuit 191 of the image forming apparatus 2 via the communication port 196 of the sheet bundle processing apparatus 3 and the communication port 193 of the image forming apparatus 2. Communication is possible.

  The CPU 199 of the control circuit 198 of the bookbinding apparatus 4 is connected to the communication port 200 of the bookbinding apparatus 4, the communication ports 196 and 197 of the sheet bundle processing apparatus 3, the CPU 195 of the control circuit 194, and the communication port 193 of the image forming apparatus 2. Thus, communication with the CPU 192 of the control circuit 191 of the image forming apparatus 2 is possible.

  The CPU 203 of the control circuit 202 of the cutting apparatus 5 includes the communication ports 200 and 201 of the bookbinding apparatus 4 and the CPU 199 of the control circuit 198, the communication ports 196 and 197 of the sheet bundle processing apparatus 3, the CPU 195 of the control circuit 194, and the image forming apparatus. The CPU 192 of the control circuit 191 of the image forming apparatus 2 can communicate with each other via the two communication ports 193.

  As described above, the CPUs 195, 199, and 203 of the control circuits 194, 198, and 202 of the sheet bundle processing apparatus 3, the bookbinding apparatus 4, and the cutting apparatus 5 can communicate with the CPU 192 of the control circuit 191 of the image forming apparatus 2, respectively. Therefore, information necessary for control by the CPU 192 of the control circuit 191 of the image forming apparatus 2 includes the CPU 203 of the control circuit 202 of the cutting processing apparatus 5, the CPU 199 of the control circuit 198 of the bookbinding apparatus 4, and the control of the sheet bundle processing apparatus 3. A control signal from the CPU 195 of the circuit 194 is transmitted to the image forming apparatus 2 side, and a control signal from the CPU 192 of the control circuit 191 of the image forming apparatus 2 is transmitted to the sheet bundle processing apparatus 3, the bookbinding apparatus 4, and the cutting processing apparatus 5.

  As the image forming apparatus 2, for example, a known electrophotographic image forming apparatus is used as a copying machine, a printer, a facsimile, or a complex machine thereof, and forms a monochrome or full-color image on a sheet. The image forming apparatus 2 is provided with a transport mechanism having a configuration similar to that of a booklet transport mechanism 9 provided in the cutting processing apparatus 5 described later.

  Further, the image forming apparatus 2 is provided with an operation panel PN that functions as a man-machine interface. With the operation panel PN, input from the operator and notification to the operator via the display device are possible. It has become.

  As shown in FIG. 1, the sheet bundle processing apparatus 3 is connected to the subsequent stage of the image forming apparatus 2 and forms a sheet bundle S by superimposing and aligning sheets from the image forming apparatus 2, and binding the subsequent stage. The sheet bundle S is discharged to the apparatus 4.

  The sheet bundle processing apparatus 3 receives sheets one by one from the image forming apparatus 2 and sequentially stacks and aligns them to create a sheet bundle S, and discharges the created sheet bundle S to a subsequent bookbinding apparatus 4. A sheet bundle discharge roller 7 to be used.

  The bookbinding apparatus 4 is connected to the subsequent stage of the sheet bundle processing apparatus 3. The booklet binding apparatus 4 performs saddle stitching on the sheet bundle S from the sheet bundle processing apparatus 3 and creates a booklet P by folding the sheet bundle S. Then, the bookbinding apparatus 4 is discharged to the subsequent cutting apparatus 5. Paper.

  As shown in FIG. 3, the bookbinding apparatus 4 includes an entrance conveyance path 11 that receives the sheet bundle S from the sheet bundle processing apparatus 3, a conveyance path 13 for saddle stitching and folding the sheet bundle S, and a sheet bundle. A sheet discharge path 15 for discharging a booklet P created by folding S in the middle, and a sheet bundle S from the sheet bundle processing apparatus 3 for discharging the sheet bundle S without performing the saddle stitching process and the middle folding process. A sheet through conveyance path 17 and a branch claw 21 for distributing the sheet bundle S from the image forming apparatus 2 to the conveyance path 13 and the sheet through conveyance path 17 are provided.

  The entrance conveyance path 11 is provided with a pair of inlet rollers 19 for feeding the sheet bundle S from the sheet bundle processing apparatus 3 into the bookbinding apparatus 4, and the sheet through conveyance path 17 is provided with a sheet from the sheet bundle processing apparatus 3. A pair of paper discharge rollers 31 for discharging the sheet bundle S from the bookbinding apparatus 4 is provided. The inlet conveyance path 11 and the sheet through conveyance path 17 are provided in the horizontal direction and are arranged in a straight line.

  In the conveyance path 13, a pair of first conveyance rollers 23 for conveying the sheet bundle S, a first conveyance guide plate 33 for guiding the sheet bundle S, and the sheet bundle S conveyed in the conveyance path 13. The trailing edge tapping claw 35 that strikes and aligns the trailing edge portion, the pair of second conveying rollers 25 for further conveying the sheet bundle S to the end side of the conveying path 13, and the presence or absence of the sheet bundle S in the conveying path 13 A sheet bundle detection sensor 41 for detecting the sheet bundle, a middle folding plate 43 for performing a middle folding process of the sheet bundle S in the conveying path 13, and a saddle stitching process for performing the saddle stitching process of the sheet bundle S in the conveying path 13. A saddle stitch stapler 49, a second transport guide plate 45 for guiding the leading end portion of the sheet bundle S in the transport path 13 to a pair of saddle stitch jogger fences 47, and a sheet bundle S in the pair of saddle stitch jogger fences 47. In contact with the tip of A movable fence 51 for positioning of the sheet bundle S, are provided. The conveyance path 13 is provided in the vertical direction.

  The rear end tapping claw 35 includes a drive belt 37 for driving the rear end tapping claw 35 and a position detection sensor 39 for detecting the home position of the rear end tapping claw 35. The rear end tapping claw 35 is provided on a drive belt 37 driven by a drive motor (not shown), and a position indicated by a broken line in the drawing is a home position, and is controlled with this home position as a reference.

  Specifically, the rear end tapping claw 35 performs hitting and pressing on the rear end portion of the sheet bundle S toward the movable fence 51 by the reciprocating rotation operation of the drive belt 37 to perform the alignment operation of the sheet bundle S. When the bundle S is conveyed into the conveyance path 13 and when the sheet bundle S is lifted for folding, the sheet is retracted from the conveyance path 13 to the home position.

  The movable fence 51 includes a movable fence driving mechanism 53 that reciprocates the movable fence 51 up and down, and a position detection sensor 55 that detects the vertical position of the movable fence 51. The movable range of the movable fence 51 is a range that can be processed from the maximum size that can be processed by the bookbinding apparatus 4 to the minimum size, from the position of the position detection sensor 55 to a position near the bottom surface of the casing of the bookbinding apparatus 4. ing.

  The movable fence 51 moves up and down while supporting the leading end portion of the sheet bundle S, and adjusts the center position (saddle stitching location) of the sheet bundle S to the position facing the saddle stitching stapler 49. As the movable fence drive mechanism 53, for example, a rack and pinion mechanism is used.

  The middle folding plate 43 can reciprocate in the horizontal direction, and the nip of the pair of middle folding rollers 27 is positioned in the operation direction when the middle folding process is performed, and the paper discharge conveyance path 15 is provided on the extension. It has been.

  A pair of center folding rollers 27 for pressing and transporting the sheet bundle S in which the saddle stitching portion is folded by the center folding plate 43 and creating a booklet P by simple folding, are disposed in the paper discharge transport path 15; A pair of booklet discharge rollers 29 for discharging the booklet P, which is simply bound by the pair of middle folding rollers 27, to the cutting device 5, and a front end portion of the booklet P, which is simply bound (the fold portion of the booklet P), And a passage detection sensor 57 for detection.

  The cutting device 5 is connected to the subsequent stage of the bookbinding device 4, and cuts the edge of the booklet P (the rear end portion of the booklet P) from the bookbinding device 4. As shown in FIG. 4, the cutting device 5 includes a conveyance unit 63 for conveying the booklet P from the bookbinding device 4 into the cutting device 5, a cutting unit 65 for cutting the rear end portion of the booklet P, An alignment unit 67 for aligning the booklet P and a booklet transport path 61 through which the booklet P is transported are provided. The booklet conveyance path 61 is provided in the horizontal direction through the conveyance unit 63, the cutting unit 65, and the alignment unit 67. The arrow of the conveyance path 61 indicates the conveyance center of the booklet P.

  The transport unit 63 includes a pair of guide plates 72 that guide the booklet P from the bookbinding apparatus 4 to the booklet transport path 61, a pair of transport rollers 71 for transporting the booklet P into the booklet transport path 61, and the booklet P And a jogger (shown in FIG. 19) 155 for aligning the rear end portion (the edge of the booklet P). Instead of the pair of transport rollers 71, a pair of transport belts may be provided on the top and bottom of the booklet transport path 61, and the booklet P may be transported while being pinched by a predetermined pressure by the pair of transport belts.

  The cutting unit 65 is provided on the upper side of the booklet conveyance path 61 so as to be movable up and down, and a cutting blade 73 for cutting the rear end portion (small edge side) of the booklet P, and a fixed blade fixed to the lower side of the booklet conveyance path 61. 75, a pressing member 77 provided on the upper side of the booklet conveying path 61 so as to be movable up and down and pressing and fixing the booklet P, and a booklet fixed to the lower side of the booklet conveying path 61 and pressed by the pressing member 77. And a base member 79 that supports P.

  The cutting blade 73 is driven downward to a position exceeding the cutting edge of the fixed blade 75 by a drive mechanism (not shown), and does not obstruct the conveyance of the booklet P when the booklet P is conveyed to the booklet conveyance path 61. Drives up to position. The position on the drawing is the standby position, which is the initial position.

  The fixed blade 75 is fixed to the base member 79, and the fixed position is set at a position where the sheet bundle S can be cut by the cutting edge of the cutting blade 73 and the cutting edge of the fixed blade 75.

  The cutting blade 73 and the fixed blade 75 are provided as a pair. The cutting blade 73 descends with respect to the booklet P, and the rear end portion of the booklet P (of the booklet P is between the cutting blade 73 and the fixed blade 75). The small side is cut. A waste receptacle 69 for receiving the cut booklet waste is provided at the lower portion of the cutting portion 65.

  The pressing member 77 is driven to move up and down by a drive mechanism (not shown), and when the cutting blade 73 descends to cut the booklet P, the booklet P is pressed and held near the fixed blade 75 of the base member 79. To do. The cutting blade 73 and the pressing member 77 are driven by a motor and a driving mechanism (not shown) using a speed reduction mechanism connected to the motor, but are driven in the vertical direction by hydraulic pressure instead of the motor and the speed reduction mechanism. It can also be configured as follows.

  The alignment unit 67 includes a first unit 81 provided in the upper part of the booklet transport path 61 and a second unit 83 provided in the lower part of the booklet transport path 61. The aligning unit 67 is provided with a booklet transport mechanism 9, and the booklet transport mechanism 9 holds the booklet P between the first transport means 91 and the second transport means 99 and transports the booklet transport means 90. And an interval adjusting means (not shown) for adjusting an interval between the first conveying means 91 and the second conveying means 99.

  The first unit 81 includes a guide shaft 85 provided in the vertical direction, a pressure plate 87 provided on the guide shaft 85 and provided so as to be movable up and down along the guide shaft 85, and the guide shaft 85. A support member 92 provided on the lower side, a compression spring 89 that is externally attached to the guide shaft 85 and urges the pressure plate 87 and the support member 92 in a separating direction, and is supported by the support member 92 First conveying means 91.

  In the first unit 81, the guide shaft 85, the pressure plate 87, the support member 92, the compression spring 89, and the first transport unit 91 can be moved up and down integrally by a gap adjusting unit (not shown). And the relative distance between the second conveying means 99 described later can be changed.

  The interval adjusting means for moving the first unit 81 up and down includes a motor that moves the first unit 81 in the up and down direction, a power transmission mechanism, and a guide in the up and down direction. The driving means for moving the pressure plate 87 up and down includes a motor that moves the pressure plate 87 in the vertical direction, a power transmission mechanism, and a guide in the vertical direction.

  Then, after the first unit 81 is lowered by the distance adjusting means and the upper surface of the booklet P is pressed against the first conveying means 91, the pressure plate 87 is moved from the initial distance between the pressure plate 87 and the support member 92. When it is lowered, the compression spring 89 is further compressed, pressure is applied by the compression spring 89, and the holding force or pressing force of the booklet P can be further increased.

  The first transport means 91 includes a driving pulley 93 that is rotationally driven by a motor (not shown), a driven pulley 95 that is rotatably provided, and an endless first pulley that is hung on the driving pulley 93 and the driven pulley 95. 1 conveyor belt 97. The first transport unit 91 is integrally supported by the support member 92.

  The second unit 83 includes a second conveying means 99 that conveys the booklet P, a stopper 109 that contacts the leading end portion of the booklet P and positions the booklet P, and a guide plate 107 that smoothly guides the booklet P. And.

  The second conveying means 99 includes a driving pulley 101 that is rotationally driven by a motor (not shown), a driven pulley 103 that is rotatably provided, and an endless first pulley that is hung on the driving pulley 101 and the passive pulley 103. 2 conveyor belts 105. The second transport means 99 is integrally supported by the casing of the cutting device 5. The upper surface of the second conveying belt 105 is located on the same plane as the upper surface of the base member 79 and functions as a reference surface for conveying the booklet P.

  The first conveyor belt 97 and the second conveyor belt 105 have a function of conveying the booklet P and also have a function as a guide means when the booklet P is aligned, and the surface in contact with the booklet P is a friction with the sheet. A material having a low coefficient is used, and the friction coefficients of the first conveyor belt 97 and the second conveyor belt 105 are set to be approximately the same. For this reason, the force applied to the upper and lower parts of the booklet P when the booklet P is pressed is reduced, and the force applied to the upper and lower parts is substantially the same, so that the displacement at the time of pressing can be reduced.

  As shown in FIG. 5, the booklet transport unit 90 having the first transport unit 91 and the second transport unit 99 is provided with a transport position synchronization unit 111. The transport position synchronization means 111 includes a first link 113 provided with a first pulley 117 as a first rotating body and a second pulley 119 as a second rotating body, and the second pulley 119 and a third rotating body. And a second link 115 provided with the third pulley 121.

  A first endless belt 127 is hung on the first pulley 117 and the second pulley 119, and the first pulley 117 and the second pulley 119 are interlocked with each other by the first endless belt 127. Has been.

  A second endless belt 129 is hung on the second pulley 119 and the third pulley 121, and the second pulley 119 and the third pulley 121 are interlocked with each other by the second endless belt 129. Has been.

  The first link 113 and the second link 115 are rotatably supported on the rotation shaft 119a of the second pulley 119, and the first pulley 117, the second pulley 119, and the third pulley 121 have the same reference circular diameter. Is formed.

  The first pulley 117 is provided on the rotation shaft of the drive pulley 93 of the first transport unit 91. For this reason, since the 1st pulley 117 and the drive pulley 93 interlock | cooperate, the 1st pulley 117 and the 1st conveyance means 91 interlock | cooperate.

  The third pulley 121 is provided with a gear 123 on a concentric circle of the third pulley 121, and the driving pulley 101 of the second conveying means 99 is provided with the third pulley 121 on the concentric circle of the driving pulley 101. A gear 125 that meshes with the gear 123 is provided, and the third pulley 121 and the drive pulley 101 are provided side by side. For this reason, since the 3rd pulley 121 and the drive pulley 101 interlock | cooperate, the 3rd pulley 121 and the 2nd conveyance means 99 interlock | cooperate.

  The gears 123 and 125 are formed to have the same reference circle diameter that is smaller than the reference circle diameter of the third pulley 121. The drive pulleys 93 and 101 are formed to have the same diameter that is larger than the reference circular diameter of the first pulley 117 and the third pulley 121.

  As described above, the first pulley 117 and the second pulley 119 formed to have the same reference circle diameter and interlocked with each other are provided in the first link 113, and formed to the same reference circle diameter and interlocked with each other. Since the second pulley 119 and the third pulley 121 are provided on the second link 115, for example, as shown in FIGS. 6 (A) and 6 (B), the first link 113 is shown in FIG. 6 (A). 6B, the first endless belt 127 is wound around the first pulley 117 by the amount indicated by the arrow B, and the first endless belt 127 is indicated by the arrow A. Only around the second pulley 119.

  That is, no matter how much the first link 113 rotates, the first endless belt 127 wraps around the pulleys 117 and 119 corresponding to the rotation, so that the positions of the square and triangle shown on the first pulley 117 The positions of the star-shaped polygons and the circles shown on the second pulley 119 are not displaced relative to the reference circles of the pulleys 117 and 119.

  Accordingly, the first pulley 117, the second pulley 119, and the third pulley 121 do not rotate no matter how much the second link 115 rotates in the same manner as the first link 113 and the first link 113, as shown in FIG. In addition, even if the interval between the first conveying unit 91 and the second conveying unit 99 is changed from the initial interval (shown in FIG. 6) L1 to the pressing interval L2 by the interval adjusting unit, the first conveying belt 97 and the second conveying unit. The conveyance position of the belt 105 is not displaced.

  Therefore, even if the interval between the first conveying means 91 and the second conveying means 99 is changed, the phase of the conveying positions of the first conveying means 91 and the second conveying means 99 becomes the same, so that the booklet is not displaced. P can be pressed and positioned and fixed, and the booklet P can be pressed and fixed without causing a shift of the rear end portion of the booklet P (the small edge side of the booklet P).

  Since the booklet P can be positioned and pressed and fixed without shifting the rear end portion (the small edge side of the booklet P) of the booklet P, the rear end portion of the booklet P is shifted and obliquely aligned. The accuracy of the booklet P cutting process can be improved.

  As described above, the booklet transport mechanism 9 according to the first embodiment of the present invention is a booklet transport that transports the booklet P sandwiched between the first transport means 91 and the second transport means 99. In the booklet transport mechanism 9 having means 90 and an interval adjusting means for adjusting the distance between the first transport means 91 and the second transport means 99, the booklet transport means 90 includes the first transport means 91. The transport position synchronization means 111 for synchronizing the transport position with the transport position of the second transport means 99 is provided, and the transport position synchronization means 111 includes a first pulley 117 and a second pulley 119 that are interlocked with each other. A first link 113 provided, and a second link 115 provided with the second pulley 119 and the third pulley 121 interlocked with each other, and the first link 113 and the second link 115 are provided. Above The first pulley 117, the second pulley 119, and the third pulley 121 are formed to have the same reference circular diameter, and are supported on the rotation shaft 119a of the two pulleys 119, and the first conveyance The means 91 and the first pulley 117 are interlocked with each other, and the second conveying means 99 and the third pulley 121 are interlocked with each other.

  As described above, the first pulley 117 and the second pulley 119 formed to have the same reference circle diameter and interlocked with each other are provided in the first link 113, and formed to the same reference circle diameter and interlocked with each other. Since the second pulley 119 and the third pulley 121 are provided on the second link 115, the first pulley 117, the second pulley 119, and the third pulley no matter how much the first link 113 and the second link 115 rotate. Since 121 does not rotate, even if the interval between the first conveying unit 91 and the second conveying unit 99 is changed by the interval adjusting unit, the conveying positions of the first conveying belt 97 and the second conveying belt 105 are not displaced.

  Therefore, even if the interval between the first conveying means 91 and the second conveying means 99 is changed, the phase of the conveying positions of the first conveying means 91 and the second conveying means 99 is the same, so that the booklet is not displaced. The P can be pressed and positioned and fixed, and the booklet P can be pressed and fixed without causing a deviation of the rear end portion of the booklet P (the small edge side of the booklet P). There is no possibility that the portion will be misaligned and cut off obliquely, and the accuracy of the booklet cutting process can be improved.

  Further, the booklet transport mechanism 9 does not change the phase of each of the rotating bodies 117, 119, and 121 even if the interval between the first transport means 91 and the second transport means 99 is changed, and the first transport means 91. And the second conveying means 99 are not out of phase with each other, so that the interval between the first conveying means 91 and the second conveying means 99 can be changed while conveying the booklet P, and the cutting processing speed can be increased. High processing efficiency can be achieved by increasing the cutting processing speed.

  Further, the booklet transport mechanism 9 is configured so that the phase between the first transport unit 91 and the second transport unit 99 is not shifted in accordance with the change in the distance between the first transport unit 91 and the second transport unit 99. Since it is not necessary to provide a motor or an electromagnetic clutch, cost reduction and energy saving can be realized.

  Further, since the cutting device 5 as the paper processing apparatus according to the first embodiment of the present invention includes the booklet transport mechanism 9 described above, the accuracy of the cutting processing of the booklet P is improved, and the cutting processing speed is high. , High efficiency of cutting processing, cost reduction, and energy saving can be realized.

  Further, since the image forming apparatus 2 according to the first embodiment of the present invention includes the booklet transport mechanism 9 described above, the image forming apparatus generates the booklet P by performing the saddle stitching process and the middle folding process. 2, the booklet P can be transported to a subsequent processing apparatus without causing a positional shift on the fore edge side (the rear end portion of the booklet P) of the booklet P.

  In addition, since the image forming system 1 according to the first embodiment of the present invention includes the above-described cutting processing device 5 and the above-described image forming device 2, the accuracy of the booklet P cutting processing is improved and the cutting is performed. It is possible to realize high processing speed, high efficiency of cutting processing, cost reduction, and energy saving.

(Second Embodiment)
Next, a booklet transport unit 90A of the booklet transport mechanism 9 in the image forming system 1 according to the second embodiment of the present invention will be described with reference to the accompanying drawings. 8 is a configuration diagram of the booklet transport unit 90A, FIG. 9 is an explanatory diagram of the phases of the first gear 131 and the second gear 133 before and after the rotation of the first link 113, and FIG. 10 is a diagram illustrating the first transport unit 91A and the first transport unit 91A. It is explanatory drawing of the state which narrowed the space | interval with 2 conveying means 99A. Note that the same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 8, the first conveying means 91A is applied to a drive pulley 93 that is rotationally driven by a motor (not shown), a driven pulley 95 that is rotatably provided, the drive pulley 93, and the driven pulley 95. And an endless first conveying belt 97 that is laid.

  The second conveying means 99A includes a driving pulley 101 that is rotationally driven by a motor (not shown), a driven pulley 103 that is rotatably provided, and an endless first pulley that is hung on the driving pulley 101 and the passive pulley 103. 2 conveyor belts 105.

  The booklet transport unit 90A having the first transport unit 91A and the second transport unit 99A is provided with a transport position synchronization unit 111A. The transport position synchronization means 111A includes a first link 113A provided with a first gear 131 as a first rotating body and a second gear 133 as a second rotating body, and the second gear 133 and a third rotating body. And a third link 115 </ b> A provided with the third gear 135.

  The first link 113A is rotatably provided with a first idle gear 137 that meshes with the first gear 131 and the second gear 133. By the first idle gear 137, the first gear 131 and the second gear 133 are provided. Are linked to each other.

  The second link 115A is rotatably provided with a second idle gear 139 that meshes with the second gear 133 and the third gear 135. By the second idle gear 139, the second gear 133 and the third gear 135 are provided. Are linked to each other.

  The first link 113A and the second link 115A are rotatably supported on the rotation shaft 113a of the second gear 133. The reference circle 141 of the first gear 131, the reference circle 143 of the second gear 133, and the reference circle 145 of the third gear 135 are formed to have the same reference circle diameter.

  The first gear 131 is provided on the rotation shaft of the drive pulley 93 of the first transport means 91A. For this reason, since the first gear 131 and the drive pulley 93 are interlocked, the first gear 131 and the first conveying means 91A are interlocked.

  The drive pulley 101 of the second conveying means 99A is provided with a gear 147 formed on the concentric circle of the drive pulley 101 to have the same reference circle diameter as the reference circle 145 of the third gear 135 and meshing with the third gear 135. The third gear 135 and the drive pulley 101 are provided side by side. For this reason, since the third gear 135 and the driving pulley 101 are interlocked, the third gear 135 and the second conveying means 99A are interlocked.

  The reference circle 149 of the first idle gear 137 and the reference circle 151 of the second idle gear 139 are based on the reference circle 141 of the first gear 131, the reference circle 143 of the second gear 133, and the reference circle 145 of the third gear 135. Are formed in the same reference circle diameter with a small diameter. The drive pulleys 93 and 101 are formed to have the same diameter that is larger than the reference circle diameter of the first gear 131 and the third gear 135.

  As described above, the first gear 131 and the second gear 133 that are formed to have the same reference circle diameter and are linked to each other are provided in the first link 113A, and are formed to have the same reference circle diameter and are linked to each other. Since the second gear 133 and the third gear 135 are provided on the second link 115A, for example, as shown in FIGS. 9 (A) and 9 (B), the first link 113A is shown in FIG. 9 (A). 9B, the first idle gear 137 moves on the second gear 133 by the amount indicated by the arrow C, and the first idle gear 137 by the amount indicated by the arrow D. The first idler gear 137 rotates on the first gear 131 by the amount indicated by the arrow F, and the first idler gear 137 rotates by the amount indicated by the arrow E.

  That is, no matter how much the first link 113A rotates, the first idle gear 137 rotates in response to the rotation, so the positions of the square and triangle shown on the first gear 131 and the second gear 133 The positions of the star-shaped polygon and the circle shown in FIG. 3 are not displaced relative to the reference circle 141 of the first gear 131 and the reference circle 143 of the second gear 133.

  Accordingly, the first gear 131, the second gear 133, and the third gear 135 do not rotate no matter how much the first link 113A and the second link 115A rotate in the same manner as the first link 113A, as shown in FIG. In addition, even if the interval between the first conveying unit 91A and the second conveying unit 99A is changed from the initial interval (shown in FIG. 8) L1 to the pressing interval L2 by the interval adjusting unit, the first conveying belt 97 and the second conveying unit. The conveyance position of the belt 105 is not displaced.

  Therefore, even if the interval between the first conveying means 91A and the second conveying means 99A is changed, the phase of the conveying positions of the first conveying means 91A and the second conveying means 99A is the same, so the booklet is not displaced. P can be pressed and positioned and fixed, and the booklet P can be pressed and fixed without causing a shift of the rear end portion of the booklet P (the small edge side of the booklet P).

  Since the booklet P can be positioned and pressed and fixed without shifting the rear end portion (the small edge side of the booklet P) of the booklet P, the rear end portion of the booklet P is shifted and obliquely aligned. The accuracy of the booklet P cutting process can be improved.

  As described above, in the booklet transport mechanism 9 according to the second embodiment of the present invention, the booklet transport unit 90A has the transport position of the first transport unit 91A and the transport position of the second transport unit 99A. A conveyance position synchronization unit 111A for synchronization is provided. The conveyance position synchronization unit 111A includes a first link 113A provided with a first gear 131 and a second gear 133 that are interlocked with each other, and a second gear 133 that is interlocked with each other. And a second link 115A provided with a third gear 135, and the first link 113A and the second link 115A are rotatably supported on a rotation shaft 133a of the second gear 133, The first gear 131, the second gear 133, and the third gear 135 are formed to have the same reference circle diameter, and the first conveying means 91A and the first gear 131 are interlocked with each other. , And the second conveying means 99A and the third gear 135 are interlocked with each other.

  As described above, the first gear 131 and the second gear 133 that are formed to have the same reference circle diameter and are linked to each other are provided in the first link 113A, and are formed to have the same reference circle diameter and are linked to each other. Since the second gear 133 and the third gear 135 are provided on the second link 115A, the first gear 131, the second gear 133, and the third gear no matter how much the first link 113A and the second link 115A rotate. Since 135 does not rotate, even if the interval between the first conveying unit 91A and the second conveying unit 99A is changed by the interval adjusting unit, the conveying positions of the first conveying belt 97 and the second conveying belt 105 are not displaced.

  Therefore, even if the interval between the first transport unit 91A and the second transport unit 99A is changed, the phase of the transport position of the first transport unit 91A and the second transport unit 99A is the same, so the booklet is not displaced. The booklet P can be pressed and positioned and fixed, and the booklet P can be pressed and fixed without causing a deviation of the rear end portion of the booklet P (the small edge side of the booklet P). There is no possibility that the end portion will be shifted and cut off at an angle, and the accuracy of the booklet cutting process can be improved.

  Further, the booklet transport mechanism 9 does not change the phases of the first gear 131, the second gear 133, and the third gear 135 even if the interval between the first transport means 91A and the second transport means 99A is changed. Since the phase of the first conveying means 91A and the second conveying means 99A is not shifted, the interval between the first conveying means 91A and the second conveying means 99A can be changed while conveying the booklet P, and the cutting processing speed is increased. And high processing efficiency can be achieved by increasing the cutting processing speed.

  Further, the booklet transport machine 9 has an extra portion so that the phase between the first transport unit 91A and the second transport unit 99A is not shifted in accordance with the change in the interval between the first transport unit 91A and the second transport unit 99A. Since it is not necessary to provide a motor or an electromagnetic clutch, cost reduction and energy saving can be realized.

  Next, with reference to FIG. 11 to FIG. 22, an operation and processing at that time in the image forming system 1 according to the first embodiment and the second embodiment described above will be described. FIG. 11 is a flowchart showing the processing procedure of the pressing process and the cutting process in the cutting apparatus 5. 12-16 is explanatory drawing which shows the operation | movement of the saddle stitching process in the bookbinding apparatus 4, and a middle folding process. 17-22 is explanatory drawing which shows the operation | movement of the press process in the cutting apparatus 5, and a cutting process.

  As shown in FIG. 12, when the saddle stitching middle folding is selected from the operation panel (see FIG. 2) PN of the image forming apparatus 2, the sheet bundle S in which the saddle stitching middle folding is selected is branched by the bookbinding device 4. The claw 21 is guided to the conveyance path 13 side by the counterclockwise biasing operation. The branching claw 21 is driven by a solenoid having a coil and an iron core, but may be motor-driven instead of the solenoid.

  After the sheet bundle S carried into the conveyance path 13 is conveyed below the conveyance path 13 by the entrance roller (see FIG. 3) 19 and the first conveyance roller 23 and the passage is confirmed by the sheet bundle detection sensor 41. The second conveyance roller 25 conveys the movable fence 51 to a position where the leading end portion of the sheet bundle S abuts.

  At that time, the movable fence 51 stands by at a stop position suitable for each sheet bundle S according to the sheet size information from the image forming apparatus 2, here, the size information in the conveying direction of each sheet bundle S. At this time, the second conveyance roller 25 holds the sheet bundle S in the nip, and the trailing edge tapping claw 35 stands by at the home position.

  In this state, as shown in FIG. 13, one of the second conveying rollers 25 moves in the direction of arrow a to release the holding pressure, and the leading end portion of the sheet bundle S comes into contact with the movable fence 51 to When the sheet bundle S is supported and stacked in a state where the rear end portion of the sheet bundle S is free, the rear end tapping claw 35 is driven in the direction of the arrow c, and the rear end portion of the sheet bundle S is tapped at the rear end. The claw 35 is struck to perform final alignment in the transport direction.

  Next, the alignment operation in the width direction of the sheet bundle S (the direction orthogonal to the conveyance direction of the sheet bundle S in the conveyance path 13) is performed by the saddle stitching jogger fence 47, and the movable fence 51 and the rear end tapping claw 35 are arranged. Thus, the alignment operation in the conveyance direction is executed, and the alignment operation in the width direction and the conveyance direction of the sheet bundle S is completed. At this time, according to the sheet size information, the number information of the sheet bundle S, and the thickness information of the sheet bundle S, the pushing amounts of the trailing edge hitting claws 35 and the saddle stitching jogger fence 47 are changed to the optimum values for matching.

  Note that if the thickness of the sheet bundle S is large, the space in the conveyance path 13 is reduced, so that there may be a case where the alignment cannot be performed once. Therefore, in such a case, a better matching state can be realized by increasing the number of times of matching. Further, as the number of sheets constituting the sheet bundle S increases, the time for sequentially stacking the sheets in the sheet bundle processing apparatus (see FIG. 1) becomes longer. However, if the number of alignments is increased, the alignment processing time becomes longer. There is no loss of time as a system. Therefore, even when the thickness of the sheet bundle S is large, a good alignment state can be realized efficiently.

  Next, the stitcher 49a of the saddle stitch stapler 49 is driven in the center of the sheet bundle S in the direction of arrow b, and is bound with the clincher 49b by the needle 171 so that the sheet bundle S is saddle stitched. At this time, the standby position of the movable fence 51 is normally set such that the saddle stitching position of the sheet bundle S faces the binding position of the saddle stitching stapler 49. This is because when the sheet bundle S is aligned at this position, it is possible to perform the binding process as it is at the stacked position without moving the movable fence 51 to the saddle stitching position of the sheet bundle S.

  The movable fence 51 is positioned by pulse control from the position detection sensor 55 that detects the position of the movable fence 51, and the rear end tapping claw 35 is detected from the position detection sensor 39 that detects the home position of the rear end tapping claw 35. Positioning is performed by pulse control. Positioning control of the movable fence 51 and the rear end tapping claw 35 is executed by the CPU 199 of the control circuit 198 of the bookbinding apparatus 4 (see FIG. 2).

  In this state, as shown in FIG. 14, the saddle-stitched sheet bundle S moves the movable fence 51 upward (in the direction of arrow d) with the nipping pressure of the second conveying roller 25 released, and this As the movable fence 51 moves upward, the saddle stitching position (the center portion of the sheet bundle S) is transferred to a position facing the middle folding plate 43. This position is also controlled based on the detection position of the position detection sensor 55 that detects the position of the movable fence 51.

  Next, as shown in FIG. 15, the half-fold plate 43 moves in the direction of arrow e toward the nip of the half-fold roller 27 and comes into contact with the sheet bundle S near the saddle-stitched needle 171 in a substantially orthogonal direction. And extrude to the nip side. The pushed sheet bundle S is pushed by the middle folding plate 43 and guided to the nip of the middle folding roller 27 and is pushed into the nip of the middle folding roller 27 that has been rotated in advance. The intermediate folding roller 27 pressurizes and conveys the sheet bundle S pushed into the nip. By this pressurizing and conveying operation, the center of the sheet bundle S is folded, and a booklet P that is simply bound is formed.

  Next, as shown in FIG. 16, the booklet P formed by folding and pressing the central portion of the sheet bundle S is conveyed in the discharge conveyance path 15 and narrowed in the nip of the booklet discharge roller 29. It is held and discharged to the cutting device 5. At this time, when the rear end portion of the booklet P is detected by the passage detection sensor 57, the half-fold plate 43 and the movable fence 51 return to the home position, and the second transport roller 25 returns to the pressurized state. In preparation for carrying in the next sheet bundle S. If the next job has the same size and the same number of sheets, the movable fence 51 may move to the position shown in FIG. 12 and wait. These controls are also executed by the CPU 199 of the control circuit 198 of the bookbinding apparatus 4.

  Next, as shown in FIGS. 11 and 17, the sheet bundle S guided by the guide plate 72 is carried into the cutting device 5. At that time, when a booklet tip portion detection signal from an inlet sensor (not shown) provided at the booklet receiving port 70 or a fold tip detection signal of the booklet P from the passage detection sensor 57 of the bookbinding apparatus 4 is detected (step S1). Each part of the cutting device 5 starts an operation for preparing to accept the booklet P (step S2). The booklet P receiving preparation operation here is an operation of lowering the first unit 81 from the initial position.

  Next, as a result of the acceptance preparation operation, the interval between the lower surface of the first conveyor belt 97 of the first conveyor means 91 (91A) and the upper surface of the second conveyor belt 105 of the second conveyor means 99 (99A) is It moves to a position that becomes the first interval d1 (step S3).

  The first interval d1 is determined by the CPU 203 with reference to a database stored in a memory (not shown) in the control circuit 202 of the cutting apparatus 5 from booklet information such as sheet thickness, sheet size, number of sheets to be bound, and special paper. ing. That is, the CPU 203 executes a pressing process and a cutting process based on the booklet information transmitted from the CPU 192 of the control circuit 191 of the image forming apparatus 2 to the CPU 203.

  Further, the first interval d1 is set so that when the booklet P is carried into the cutting device 5 by the conveying roller 71, the first conveying belt 97 of the first conveying means 91 (91A) and the second conveying means 99 (99A). This is an interval at which the booklet P can be pinched by the second conveying belt 105 and a frictional force that can be conveyed can be applied. That is, the 1st space | interval d1 should just be a space | interval which can convey the booklet P. FIG.

  Subsequently, the stopper 109 moves to a position where the booklet P is positioned based on information such as the size of the booklet P and the cutting amount (step S4). When the movement of the stopper 109 is completed (step S5: YES), the conveyance roller 72, the first conveyance belt 97, and the second conveyance belt 105 start to rotate and start accepting the booklet P (step S6). At this time, the first conveyance belt 97 and the second conveyance belt 105 are in phase with each other by the conveyance position synchronization unit 111 described above.

  In such a state, at the timing when a predetermined time has elapsed from the timing when the back (fold) tip of the booklet P carried into the cutting device 5 is detected by the entrance sensor (not shown) (YES in step S7). The first conveyor belt 97 and the second conveyor belt 105 stop rotating, and the leading end portion (fold or back) of the booklet P stops before a predetermined amount of the stopper 109 (step S8).

  Next, as shown in FIG. 18, in a state where the booklet P is stopped, the first unit 81 is located at a position where the distance between the lower surface of the first conveyor belt 97 and the upper surface of the second conveyor belt 105 becomes the second distance d2. Lower (steps S9, S10). Thereby, the swelled and thick booklet P is pressed down to a certain height. Similarly to the first interval d1, the second interval d2 is also determined as an alignment interval corresponding to booklet information such as sheet thickness, sheet size, number of sheets to be bound, and special paper. In this state, the position of the support member 92 has only been changed to the alignment position. In this way, the operation of pressing the stopped booklet P to a certain thickness is performed.

  Next, as shown in FIG. 19, the booklet P is pushed into the second interval d2, and the jogger 155 is driven in a state where the booklet P is maintained at the second interval d2. The jogger 155 pushes the small edge side (the rear end portion of the booklet P) of the booklet P toward the stopper 109 and abuts the back side (the front end portion in the transport direction) of the booklet P to the stopper 109 (step S11). Thereby, positioning of the booklet P in the conveyance direction is performed. In this way, the alignment operation for aligning the conveyance direction of the booklet P is performed. The second interval d2 is an alignment process in which the booklet P is pressed and the booklet P is not distorted or distorted and the booklet P can be moved toward the stopper 109 by the jogger 155, that is, the sheet height is narrowed down. Is a possible interval.

  As a means for abutting the booklet P against the stopper 109, a method of moving the booklet P by the first transport belt 97 and the second transport belt 105 can be employed. However, if the conveyance force of the first conveyance belt 97 and the second conveyance belt 105 is large, the surface paper of the booklet P may be turned over. In that case, it is necessary to set the conveyance force so that the first conveyance belt 97 and the second conveyance belt 105 do not turn over the booklet P. In this embodiment, the jogger 155 is used in order to avoid such turning.

  Next, as shown in FIG. 20, when the booklet P is positioned between the jogger 155 and the stopper 109, the first unit 81 is further lowered and moved to the position of the third interval d3 (steps S12 and S13). . As a result, the booklet P is pressed toward the second unit 83, and the booklet P is fixed between the first transport belt 97 and the second transport belt 105 (step S14). In this way, the booklet P is pressed and fixed.

  At that time, after the first conveying belt 97 contacts the upper surface of the booklet P, the pressure plate 87 is further lowered. Thereby, the elastic force of the compression spring 89 is applied to the booklet P as a pressing force in a state where the booklet P is held at the minimum thickness. Therefore, the pressure applied to the booklet P can be controlled by changing or setting the descending amount of the pressure plate 87.

  The lowering amount of the first unit 81 (the interval between the first conveying belt 97 and the second conveying belt 105) and the lowering amount of the pressure plate 87 are the sheet thickness, sheet size, number of sheets to be bound, paper type (special paper, etc.) ) Is determined according to the booklet information. The third interval d3 is an interval sufficient to press the booklet P to the minimum thickness and finish the final thickness in a state where each sheet of the booklet P is extended, that is, an interval at which the booklet P can be pressed and fixed. is there.

  Next, as shown in FIG. 21, after the position of the booklet P is aligned and pressed and fixed, the pressing member 77 provided in the vicinity of the cutting blade 73 is lowered so that the vicinity of the cutting position of the booklet P is near the base member 79. Is pressed against the upper surface (step S15) and the cutting blade 73 is lowered to cut the small edge of the booklet P with the fixed blade 75 (step S16). The cut booklet waste is accommodated in a waste receptacle 69. In addition, the lowering amount of the pressure plate 87 in step S14 is such that each sheet of the booklet P, particularly the surface paper, is not displaced when the pressing member 77 is lowered to press the small edge side of the booklet P against the upper surface of the base member 79. Thus, the compression spring 89 can apply a pressing force that can be held and fixed.

  Next, as shown in FIG. 22, after the cutting is performed, the cutting blade 73 and the pressing member 77 are retracted from the cutting position to the initial position above (step S17). Next, the pressure applied to the booklet P is released until the pressurizing plate 87 and the first unit 81 are raised and the applied pressure is such that the booklet P can be conveyed (step S18). The upward movement distance of the pressure plate 87 and the first unit 81 at this time is determined in accordance with booklet information such as sheet thickness, sheet size, number of sheets to be bound, paper quality (special paper, etc.).

  Next, the first transport belt 97 and the second transport belt 105 are rotated in the transport direction (step S19), and the booklet P that has been bound and cut is discharged from the cutting device 5 and the discharge is completed ( In step S20), a series of operations in the cutting device 5 is completed.

  The database that refers to the first to third intervals d1, d2, d3 in steps S3, S10, and S13 and the descending amount of the pressure plate 87 in step S14 may be cut by the cutting device 5. For the combination of each element of the sheet thickness, sheet size, number of sheets bound, and paper type (special paper, etc.) of a booklet P, the optimum intervals d1, d2, d3 and the descending amount are obtained in advance by an actual machine before shipping, This is a database.

As such a database, for example, the CPU 192 of the control circuit 191 of the image forming apparatus 2 has a sheet thickness of normal thickness (thickness of normal paper when classified as thin paper, normal paper, thick paper: for example, metric basis weight g / represented by m ^2), the sheet size is A3, 10 sheets stapled sheets when the booklet information that the paper type is plain paper, sent to the CPU203 of the control circuit 202 of the cutting device 5, the CPU203 is controlled By referring to the database in the memory of the circuit 202, the first to third intervals d1, d2, d3 and the descending amount of the pressure plate 87 corresponding to the booklet information are obtained, and steps S3, S10, S13, and step S14 are obtained. The first to third intervals d1, d2, and d3 and the descending amount of the pressure plate 87 are determined. Accordingly, the cutting process can be performed in a state where the booklet P is held with an optimum holding force or pressing force.

  By holding the booklet P in this way, the occurrence of deflection in the booklet P is suppressed, and the occurrence of misalignment when the booklet P is pressed by the pressing member 77 is prevented, so that accurate cutting processing can be performed.

  As described above, according to the booklet transport mechanism 9 according to the present invention, the booklet P can be pressed and positioned and fixed without being displaced, and the rear end portion of the booklet P (of the booklet P) Since the booklet P can be pressed and fixed without causing misalignment on the fore edge side, there is no possibility that the end of the booklet will be shifted and obliquely trimmed, and the accuracy of the booklet cutting process will be improved. be able to.

  Further, since the booklet transport mechanism 9 can change the interval between the first transport unit 91 and the second transport unit 99 while transporting the booklet P, it can increase the cutting processing speed and increase the cutting processing speed. Therefore, high processing efficiency can be achieved.

  Further, the booklet transport mechanism 9 is configured so that the phase between the first transport unit 91 and the second transport unit 99 is not shifted in accordance with the change in the distance between the first transport unit 91 and the second transport unit 99. Since it is not necessary to provide a motor or an electromagnetic clutch, cost reduction and energy saving can be realized.

  Further, since the cutting device 5 as the paper processing device according to the present invention includes the booklet transport mechanism 9 described above, the accuracy of the cutting processing of the booklet P is improved, the cutting processing speed is increased, and the cutting processing is highly efficient. , Cost reduction and energy saving can be realized.

  Further, since the image forming apparatus 2 according to the present invention includes the booklet transport mechanism 9 described above, when the image forming apparatus 2 is configured so as to create the booklet P by performing the saddle stitching process and the middle folding process, The booklet P can be transported to a subsequent processing apparatus without causing a positional shift on the small edge side (the rear end portion of the booklet P) of the booklet P.

  In addition, since the image forming system 1 according to the present invention includes the above-described cutting processing device 5 and the above-described image forming device 2, the accuracy of the cutting processing of the booklet P is improved, the cutting processing speed is increased, and the cutting is performed. High efficiency of processing, cost reduction, and energy saving can be realized.

  The above-described embodiment is an example applied to the cutting process of the cutting apparatus 5. In addition to this, the square hold for performing the corner processing so that the top portion of the booklet is cut and the back portion of the booklet is flattened. The present invention can be applied to a process of changing the sheet holding interval in a stepwise manner in an apparatus for processing while pressing the sheet.

  In addition, the first conveying belt 97 and the second conveying belt 105 have a function as a guide unit. However, a guide plate is used as the guide unit, and a separate conveying unit can be used for conveying the booklet P. is there.

  In addition, the first unit 81 is configured to move up and down, but the second unit 83 is configured to move up and down, both the units 81 and 83 are configured to move up and down, and the first transport unit 91 is configured to move up and down. It is also possible to configure the second conveying means 99 to move individually up and down.

  Further, in the transport position synchronization means 111A, the first link 113A is provided with the first idle gear 137, and the second link 115A is provided with the second idle gear 139, but the idle gears 137 and 139 are odd numbers. It is also possible to provide it.

DESCRIPTION OF SYMBOLS 1 Image forming system 2 Image forming apparatus 3 Sheet bundle processing apparatus 4 Saddle saddle stitch bookbinding apparatus (bookbinding apparatus)
5 Cutting device (paper processing device)
9 booklet transport mechanism 90 booklet transport means 91 first transport means 93 driving pulley 95 driven pulley 97 first transport belt 99 second transport means 101 driven pulley 103 driven pulley 105 second transport belt 109 stopper 111 transport position synchronization means 113 first Link 115 Second link 117 First pulley (first rotating body)
119 Second pulley (second rotating body)
119a Rotating shaft 121 Third pulley (third rotating body)
123, 125 Gears 127 First endless belt 129 Second endless belt 131 First gear (first rotating body)
133 Second gear (second rotating body)
133a Rotating shaft 135 Third gear (third rotating body)
137 First idle gear 139 Second idle gear 141, 143, 145, 149, 151 Reference circle 155 Jogger d1 First interval d2 Second interval d3 Third interval P Booklet S Sheet bundle

JP 2004-196494 A

Claims (6)

A booklet transport unit that sandwiches and transports a booklet between the first transport unit and the second transport unit, and an interval adjustment unit that adjusts an interval between the first transport unit and the second transport unit. In the booklet transport mechanism,
The booklet transport means is provided with a transport position synchronization means for synchronizing the transport position of the first transport means and the transport position of the second transport means,
The transport position synchronization means includes a first link provided with a first rotating body and a second rotating body that are interlocked with each other, and a second link provided with the second rotating body and a third rotating body that are interlocked with each other. And provided,
The first link and the second link are rotatably supported on a rotation axis of the second rotating body,
The first rotating body, the second rotating body, and the third rotating body are formed to have the same reference circle diameter; and
The booklet transport mechanism, wherein the first transport unit and the first rotating body are interlocked with each other, and the second transport unit and the third rotating body are interlocked with each other. The first rotating body, the second rotating body, and the third rotating body are pulleys;
An endless belt is hung on the first rotating body and the second rotating body, and
The booklet transport mechanism according to claim 1, wherein an endless belt is hung on the second rotating body and the third rotating body. The first rotating body, the second rotating body, and the third rotation are gears,
The first link is provided with a first idle gear that interlocks the first rotating body and the second rotating body,
2. The booklet transport mechanism according to claim 1, wherein the second link is provided with a second idle gear that interlocks the second rotating body and the third rotating body. In a paper processing apparatus equipped with a booklet transport mechanism for transporting booklets,
The sheet processing apparatus, wherein the booklet transport mechanism is the booklet transport mechanism according to any one of claims 1 to 3. In an image forming apparatus provided with a booklet transport mechanism for transporting booklets,
An image forming apparatus, wherein the booklet transport mechanism is the booklet transport mechanism according to any one of claims 1 to 3. In an image forming system including a paper processing device and an image forming device,
The sheet processing apparatus is the sheet processing apparatus according to claim 4, and
An image forming system according to claim 5, wherein the image forming apparatus is the image forming apparatus according to claim 5.

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