JP2016097484A - Bookbinding device and image formation apparatus having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet cutting device which prevents sheet jam occurring due to sticking of the adhesive agent of cuttings to a conveyance path and prevents reduction in cutting force of a cutting blade due to sticking of the adhesive agent to the cutting blade at the time of performing trimming cutting processing to sheet bundles continuously fed to a processing path.SOLUTION: A sheet cutting device comprises: an accumulation tray 41 which accumulates sheets into the bundle shape; a bookbinding path 33 which feeds the sheet bundle from the accumulation tray to an application position E, a bookbinding position F and a cutting position G in this order; application means E which applies the adhesive agent to the sheet bundle at the application position; binding means 61, 62 which binds the sheet bundle at the bookbinding position; cutting means 65 which performs trimming cut of the peripheral edge of the sheet bundle at the cutting position; sheet bundle conveyance means 47 which is arranged on a bundle conveyance path and feeds the sheet bundles to the downstream side sequentially; a control CPU 75 which controls the sheet bundle conveyance means and the cutting means; and cooling means 80 which cools a cutting blade 65x and the sheet bundle before trimming cut of the peripheral edge of the sheet bundle at the cutting position.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a sheet bundle cutting apparatus that applies an adhesive to the back of a sheet bundle that has been partly stacked and performs bookbinding or sheet binding, and cuts and aligns the periphery of the sheet bundle. The present invention relates to an agent cooling system.

  In general, this type of sheet bundle cutting apparatus is widely known as a finishing apparatus of a bookbinding apparatus in which an adhesive is applied to the back end face of a sheet bundle that is aligned in a bundle shape, and is bound and fixed in this state or bound to a cover sheet. Recently, as a terminal device of an image forming apparatus such as a printer or a printing machine, image-formed sheets are aligned in page order, and an adhesive (for example, hot-melt adhesive) is applied to the back end face of the sheet bundle to cover the sheet. And a bookbinding system for trimming and cutting the peripheral edge of the sheet bundle has been proposed.

Conventionally, as such a bookbinding apparatus, an adhesive application position, a cover binding position, and a cutting position are sequentially arranged on the downstream side in the processing path, and the adhesive is applied to the sheet bundle that moves along this path, For example, Patent Document 1 discloses an apparatus that performs each process of binding and trimming cut.

  In such a processing apparatus, it is necessary to cool and solidify the adhesive paste of the sheet bundle when transferring from the binding position to the cutting position. Then, the peripheral edge of the sheet bundle that has been cooled and solidified to an extent that does not hinder cutting is trimmed and the end faces are aligned. Conventionally, the cooling of the adhesive paste is performed for a predetermined time in a state in which a cooling plate (abutting plate) such as a metal is provided at the binding position as in the apparatus of Patent Document 1 and the adhesive surface of the sheet bundle is abutted against the cooling plate Then, the trimming is cut at the downstream cutting position.

  In such a configuration, it is necessary to set the cooling time for waiting the sheet bundle in accordance with the maximum-size sheet binding process of the maximum allowable thickness, and at the same time, the subsequent sheet is carried into the processing path upstream of the bookbinding position. Without waiting. Therefore, when a series of bookbinding is continuously processed, the succeeding sheet bundle is waited on the upstream side of the bookbinding position until the preceding sheet bundle is cooled at the bookbinding position, or upstream image formation is performed. Suspended.

  Therefore, in Patent Document 2, a conveyor-like circulation conveyance path is provided between a first stage for applying an adhesive to a sheet bundle and binding the cover sheet to a cover sheet, and a second stage for perforating the sheet bundle. A system has been proposed in which the adhesive is dried while the bundle circulates in the circulation conveyance path. And it has been proposed to adjust the length of the circulation conveyance path in accordance with the drying time of the adhesive. Similarly, Patent Document 3 proposes a system that adjusts the processing time of a sheet bundle on a belt conveyor-like conveyance path in the process of bookbinding.

JP 2005-305822 A JP 07-257809 A Japanese Patent Laid-Open No. 11-099768

  As described above, an apparatus is already known in which sheet bundles stacked in a bundle are bound together with an adhesive and bound, and the periphery of the sheet bundle is trimmed and cut.

  In this case, it is necessary to cool and solidify the adhesive to an extent suitable for the subsequent trimming process. Conventionally, as in the above-mentioned Patent Document 1, the process upstream of the bookbinding position (for example, image formation, part alignment, adhesion, etc.) The application of the agent is interrupted, and the adhesive of the sheet bundle is cooled and solidified at the binding position. In addition, as described in Patent Document 2, it has been proposed to adjust the moving time of the sheet bundle transferred from the binding position to the cutting position in accordance with the drying time of the adhesive.

The adhesive that binds back in this way requires a cooling time (drying time) according to its characteristics, and the sheet bundle sent from the binding position to the cutting position undergoes a cooling process after a predetermined cooling time. It is necessary to do.
However, if the temperature of the bookbinding bundle and the cutting part is high, the adhesive does not sufficiently harden at the set cooling time, and the adhesive of the cutting waste sticks to the conveyance path, causing paper jams. Caused.
In particular, when the temperature of the cutting blade is high, the adhesive is melted by the heat of the cutting blade, so that the adhesive also adheres to the cutting blade, and the cutting force of the cutting blade is reduced.

  Accordingly, the present invention provides a paper cutting device that eliminates the disadvantages of the prior art and reliably cools back binding adhesive so that paper jams and the cutting force of the cutting blade do not decrease. It is aimed.

  In order to solve the above-described problems, a sheet cutting apparatus according to the present invention includes a sheet stacking unit that stacks and stores sequentially transported sheets in a bundle shape, an application position, a binding position, and a cutting position of the sheet bundle from the sheet stacking unit. A bundle conveying path for transferring the sheet in order, an adhesive application unit for applying an adhesive to the sheet bundle at the application position, a binding unit for binding the sheet bundle at the binding position and the cover sheet, and the sheet bundle at the cutting position. A cutting unit that trims and cuts the periphery of the sheet, a sheet bundle conveying unit that is arranged in the bundle conveying path and sequentially transfers the sheet bundle to the downstream side, and a control unit that controls the sheet bundle conveying unit and the cutting unit. Further, the image forming apparatus further includes a cooling unit that cools the trimming unit that trims and cuts a periphery of the sheet bundle that has been bound by the binding unit.

  The sheet cutting apparatus according to the present invention includes a sheet stacking unit that stacks and stores sequentially conveyed sheets in a bundle, and a bundle that transfers the sheet bundle from the sheet stacking unit in the order of application position, bookbinding binding position, and cutting position. Trimming and cutting the peripheral edge of the sheet bundle at the cutting position, a conveying path, an adhesive application unit that applies an adhesive to the sheet bundle at the application position, a binding unit that binds the sheet bundle and the cover sheet at the binding position Cutting means, sheet bundle conveying means arranged in the bundle conveying path for sequentially transferring the sheet bundle downstream, control means for controlling the sheet bundle conveying means and the cutting means, and further comprising the binding The sheet bundle processed by the means and cooling means for cooling the cutting means for trimming and cutting the periphery of the sheet bundle are provided.

  Further, the cooling unit of the sheet cutting apparatus according to the present invention operates before trimming the periphery of the sheet bundle by the cutting unit.

  The cooling means of the sheet cutting apparatus according to the present invention is characterized in that the cutting means operates the periphery of the sheet bundle during trimming cut.

In addition, the control unit of the paper cutting device according to the present invention further includes a detection unit that detects a temperature in the paper cutting device or a temperature of the cutting unit, and based on a detection result of the detection unit, the cooling unit It is characterized by operating means.

Further, the cooling unit of the sheet cutting apparatus according to the present invention is characterized in that the operation time is varied based on a detection result of the detection unit.

Further, the cooling unit of the sheet cutting apparatus according to the present invention is characterized in that the wind pressure is varied based on a detection result of the detection unit.

The cooling means of the sheet cutting apparatus according to the present invention is characterized in that the cooling time or the wind pressure of the cooling means is changed according to the thickness of the sheet bundle or the number of sheets.

Further, the cooling means of the sheet cutting apparatus according to the present invention is characterized in that it stops when cutting the edge portion of the sheet bundle.

  In the present invention, since the cutting means is cooled in advance before the trimming cut of the peripheral edge of the sheet bundle that has been bound by the binding means by the cutting means, the adhesive can be securely solidified. For this reason, the temperature of the cutting part becomes a high temperature, and cutting waste adheres to the conveyance path and paper jam occurs, or an adhesive adheres to the cutting means and the cutting force decreases. Trouble can be solved.

1 is an explanatory diagram of an overall configuration of an image forming system including a bookbinding apparatus according to the present invention. FIG. 2 is an explanatory diagram of the overall configuration of a bookbinding apparatus in the system of FIG. 1. FIG. 3 is a main part explanatory view showing a bookbinding processing unit and a cutting processing unit in the apparatus of FIG. 2. Explanatory drawing which shows the cooling means of the cutting process part in the apparatus of FIG. FIG. 3 is an explanatory diagram of a control configuration in the apparatus of FIG. 2. 6 is a flowchart of a bookbinding operation in the control configuration of FIG. The flowchart of the cooling operation in the control structure of FIG. The flowchart of the cooling operation in the control structure of FIG. The flowchart of the cooling operation in the control structure of FIG. The flowchart of the cooling operation in the control structure of FIG. FIG. 6 is a schematic explanatory diagram of a data table related to cooling of an adhesive in the control configuration of FIG. 5. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic explanatory diagram related to cooling of a cutting blade and a sheet bundle in the present invention.

  The present invention will be described in detail below based on the preferred embodiments shown in the drawings. The image forming system shown in FIG. 1 includes an image forming apparatus A that sequentially prints sheets, a bookbinding apparatus B attached to the downstream side of the image forming apparatus A, and a post-process disposed downstream of the bookbinding apparatus B. The apparatus C is comprised. Then, the sheet on which the image is formed by the image forming apparatus A is bound by the bookbinding apparatus B, and is cut and finished by a cutting apparatus incorporated therein. Further, a sheet that is not subjected to bookbinding processing is configured to pass through the bookbinding apparatus B and to post-process the sheet by the post-processing apparatus C.

[Configuration of Image Forming Apparatus]
First, the image forming apparatus A can employ various structures such as a copying machine, a printer, and a printing machine. An electrostatic printing apparatus is shown in FIG. In the image forming apparatus A, a paper feeding unit 2, a printing unit 3, and an image forming control unit 4 are built in a casing 1. A plurality of cassettes 5 corresponding to the sheet size are prepared in the sheet feeding unit 2, and a sheet having a size designated by the image forming control unit 4 is fed out to the sheet feeding path 6. A registration roller 7 is provided in the sheet feeding path 6 and the sheet is fed to the downstream printing unit 3 at a predetermined timing after the leading edges of the sheets are aligned.

  The printing unit 3 is provided with an electrostatic drum 10. A print head 9, a developing device 11, a transfer charger 12, and the like are disposed around the electrostatic drum 10. The print head 9 is composed of, for example, a laser light emitter, and forms an electrostatic latent image on the electrostatic drum 10. A toner ink is attached to the latent image by the developing device 11 and printed on a sheet by the transfer charger 12. . This print sheet is fixed by the fixing device 13 and carried out to the paper discharge path 17. A paper discharge port 14 and a paper discharge roller 15 formed in the casing 1 are disposed in the paper discharge path 17. Reference numeral 16 denotes a circulation path. The print sheet from the paper discharge path 17 is turned upside down by the switchback path and then sent to the registration roller 7 again to form an image on the back surface of the print sheet. In this way, the print sheet on which one side or both sides are formed is carried out from the paper discharge port 14 by the paper discharge roller 15.

  In the figure, reference numeral 20 denotes a scanner unit which optically reads a document image to be printed by the print head 9. As is generally known, the platen 23 on which a document sheet is placed and set, a carriage 21 that scans a document image along the platen 23, and an optical device that photoelectrically converts an optical image from the carriage 21. It comprises a reading means (for example, a CCD device) 22. In the illustrated example, a document feeder 25 for automatically feeding a document sheet to the platen is provided on the platen 23. In the image forming apparatus A configured as described above, various image forming conditions are set by the image forming control unit 4, and at the same time, the book forming apparatus B and the post-processing apparatus C are controlled by the image forming control unit 4. .

[Configuration of bookbinding device]
Next, the bookbinding apparatus B attached to the image forming apparatus A will be described. The bookbinding apparatus B includes a stacking unit 40 that stacks and arranges printing sheets in a bundle in the casing 30, an adhesive application unit 55 that applies adhesive paste to the sheet bundle from the stacking unit 40, and an adhesive. A cover binding means (binding means in the sheet cutting device) 60 for binding the cover sheet to the applied sheet bundle is configured.

[Configuration of transport route]
The conveyance path of each sheet will be described. In the casing 30, a carry-in path 31 having a carry-in entrance 29 connected to the paper discharge port 14 of the image forming apparatus A is provided. The conveyance path 34 is connected via a path switching flapper 36. A bookbinding path (bundle transport path; the same applies hereinafter) 33 is connected to the intermediate paper transport path 32 via the stacking unit 40, and a post-processing path 38 of the post-processing apparatus C is connected to the cover transport path 34. . The bookbinding path 33 is arranged in a direction that cuts the apparatus in a substantially vertical direction, and the cover transport path 34 is arranged in a direction that crosses the apparatus in a substantially horizontal direction.

  The bookbinding path 33 and the cover transport path 34 intersect (orthogonal) each other, and a cover binding means 60 described later is disposed at the intersection. The carry-in path 31 configured as described above is connected to the paper discharge port 14 of the image forming apparatus A, and receives a print sheet from the image forming apparatus A. In this case, the image forming apparatus A carries out a print sheet (saddle stitching sheet) on which content information is printed and a print sheet (hereinafter referred to as a cover sheet) on which a title used as a cover cover is printed. In this way, the carry-in path 31 is branched into the intermediate sheet conveyance path 32 and the cover sheet conveyance path 34, and the print sheets are distributed and conveyed to the respective paths via the path switching flapper 36.

  On the other hand, an inserter device 26 is connected to the carry-in path 31 so that cover sheets that are not subjected to printing processing by the image forming apparatus A are separated from the paper feed tray 26a one by one and supplied to the carry-in path 31. is there. The inserter device 26 is provided with one or a plurality of stages of paper feed trays 26a. A paper feed means for separating and feeding stacked sheets one by one at the front end of the tray, and a downstream side of the paper feed means. A paper feed path 27 is provided, and the paper feed path 27 is connected to the carry-in path 31 via a path switching piece 28.

  Further, the carry-in path 31 has a conveyance roller 31a, the intermediate-paper conveyance path 32 has a conveyance roller 32a, the bookbinding path 33 has a grip conveyance means (sheet bundle conveyance means; the same applies hereinafter) 47 and a bundle posture deflection means 64 described later. And a paper discharge roller (paper discharge means) 66 are disposed. Further, a transport roller 34a is disposed in the cover transport path 34, and a transport roller 38a is disposed in the post-processing path 38, and each is coupled to a drive motor. In these paths, sheet sensors Se1 to Se6 are arranged at the positions shown in FIG. 2 to detect the leading edge and / or trailing edge of the sheet.

[Configuration of stacking unit]
A sheet stacking means (hereinafter referred to as “stack tray”) 41 disposed at the sheet discharge port 32x of the intermediate sheet conveyance path 32 stacks and stores sheets from the sheet discharge port 32x in a bundle. As shown in FIG. 2, the stacking tray 41 is composed of a stacking tray member arranged in a substantially horizontal posture, and a forward / reverse roller 42a and a carry-in guide 42b are provided above the stacking tray member. Then, the print sheet from the paper discharge port 32x is guided onto the stacking tray 41 by the carry-in guide 42b and stored by the forward / reverse rotation roller 42a.

  The forward / reverse roller 42a forwardly transfers the print sheet to the front end side of the stacking tray 41, and reversely pushes the rear end of the sheet against the rear end abutting member 43 disposed at the rear end of the stacking tray (right end in FIG. 1). Regulate reliance. Further, the stacking tray 41 is provided with sheet side aligning means (not shown), and both side edges of the printed sheets stored on the stacking tray are aligned to the reference position. With such a configuration, the print sheets from the intermediate paper conveyance path 32 are sequentially stacked on the stacking tray 41 and are aligned in a bundle.

[Configuration of sheet bundle conveying means]
A sheet bundle conveying unit is disposed in the bookbinding path 33, and the sheet bundle conveying unit includes a grip conveying unit 47, a folding roll 63, and a paper discharge roller 66. Then, the sheet bundle is conveyed from the stacking tray 41 by these conveying means in the order of “adhesive application position E”, “bookbinding binding position F”, and “cutting position G” shown in FIG.

  The grip conveying means 47 is composed of a pair of nip members, and grips the sheet bundle stacked on the stacking tray 41. In this gripped state, the sheet bundle is rotated 90 degrees to deflect the posture of the sheet bundle. It is mounted on a swivelable unit frame (not shown). Then, the sheet bundle accumulated on the accumulation tray 41 is deflected from the horizontal posture to the vertical posture, and the sheet bundle is conveyed and set to the adhesive application position E along the bookbinding path 33 arranged substantially in the vertical direction. For this reason, the stacking tray 41 is moved from the stacking position (solid line in FIG. 2) to the transfer position (broken line in FIG. 2), and the sheet bundle is transferred to the grip conveying means 47 prepared at the transfer position.

  As will be described later, the folding roll 63 is composed of a pair of rollers so as to fold the back-folded sheet bundle at the same time as the sheet bundle is conveyed from the bookbinding binding position F to the downstream cutting position G. The paper discharge roller 66 is composed of a pair of rollers for carrying the sheet bundle to the storage stacker 67 on the downstream side. A bundle posture deflecting unit 64 is provided between the folding roll 63 and the cutting position G. The bundle posture deflecting unit 64 also constitutes a sheet bundle conveying unit, which will be described in detail later.

[Configuration of bundle thickness detection means]
The stacking tray 41 or the grip conveying means 47 is provided with a bundle thickness detecting means Th for detecting the thickness of the sheet bundle (not shown). This is for detecting the thickness of the sheet bundle stacked on the stacking tray 41, and is provided with one of the following configurations.

  The first method counts the number of sheets carried out by a sheet sensor (paper discharge sensor) Se3 disposed at the paper discharge port 32x of the intermediate paper conveyance path 32, and calculates the bundle thickness from the average paper thickness. . For example, a counter is provided in the control CPU 75 to be described later, and a paper discharge signal of the paper discharge sensor Se3 is counted between a paper discharge instruction signal from the image forming apparatus A and a job end signal, and a preset paper thickness is set to this count value. Multiply. When the sheet bundle thickness is calculated from the number of discharged sheets as described above, the configuration is easy, but the bundle thickness at this time has a general feature.

  In the second method, the stacking tray 41 is provided with a level sensor that contacts the uppermost sheet, and the bundle thickness can be detected by detecting the position of the level sensor. For example, a lever member in contact with the uppermost sheet is arranged on the stacking tray so as to be movable in the stacking direction, and the position of the lever member is detected by, for example, a slidac sensor.

  In the third method, the grip conveying means 47 is composed of a fixed gripper and a movable gripper, and the position where the movable gripper comes into contact with the paper surface is detected by a slidac sensor.

  The bundle thickness of the sheet bundle detected by such a method is used for subsequent control. For example, when the adhesive is applied to the sheet bundle by the adhesive application means 55 described later, the application amount is adjusted according to the bundle thickness. Further, it is used as information for setting the total cooling time for cooling and solidifying the adhesive applied at the first cooling stage Fs and the second cooling stage Gs described later. Moreover, it uses as information which sets the cooling time at the time of cooling the cutting blade which is this invention, and the wind pressure of a cooling means. Details thereof will be described later.

[Configuration of adhesive application means]
An adhesive application means 55 is disposed at the adhesive application position E of the bookbinding path 33. As shown in FIG. 2, the adhesive application means 55 is composed of a glue container 56 that accommodates a hot-melt adhesive, an application roll 57, and a roll rotation motor MR. The glue container 56 is provided with a glue sensor 56S for detecting the remaining amount of adhesive. The illustrated glue sensor 56S also functions as an adhesive temperature sensor, and at the same time detects the temperature of the liquefied adhesive in the glue container 56, and at the same time detects the remaining amount of adhesive by the temperature difference of the part immersed in the adhesive. To do.

  The glue container 56 is embedded with heating means (not shown) such as an electric heater. The glue sensor 56S and the heating means are connected to a control CPU 75 described later to adjust the temperature of the adhesive in the glue container to a predetermined melting temperature. The application roll 57 is made of a heat-resistant porous material, and is configured to impregnate the glue and swell the glue layer around the roll. Then, the glue container 56 reciprocates with a predetermined stroke from the home position along the sheet bundle, and an adhesive is applied to the edge of the sheet bundle by the application roll 57 in the glue container 56 in the process of the reciprocation.

[Configuration of cover binding means]
A cover binding means 60 is arranged at the bookbinding binding position F of the bookbinding path 33. As shown in FIG. 3, the cover binding means 60 includes a back plate 61, a back folding plate 62 (62 a, 62 b), and a folding roll 63. Further, the above-described cover sheet conveyance path 34 is disposed at the bookbinding binding position F, and the cover sheet is fed from the image forming apparatus A or the inserter apparatus 26.

[Configuration of back plate]
The back support plate 61 is composed of a plate-like member that backs up the cover sheet, and joins the cover sheet sent from the cover transport path 34 and the intermediate sheet (bundle) sent from the bookbinding path 33 in an inverted T shape. Back up the cover sheet. Further, the back plate 61 has a function of cooling the back binding portion of the sheet bundle that is bound in a booklet shape.

  The back plate 61 is made of a material having excellent thermal conductivity such as metal, and cools the back binding portion (adhesion portion) of the sheet bundle to solidify the adhesive. The back support plate 61 shown in the figure is provided with a cooling element (Peltier element) and a forced cooling means (refrigerant means) such as a cooling fan on a metal plate. Such a forced cooling means is equipped according to the property (especially solidification temperature) of the adhesive to be used, and the environmental temperature of the apparatus to be used.

  The back plate 61 is disposed in the bookbinding path 33 so as to be able to advance and retreat, and transfers the bound sheet bundle to a cutting position G on the downstream side. For this reason, the back plate 61 is connected to 61M. In the figure, 61 b is a pinion connected to the drive shaft of the motor, and 61 a is a rack gear integrally formed with the back plate 61. Accordingly, the back plate 61 can be moved between the operating position inside the bookbinding path 33 and the standby position outside the path by the rotation of the operating motor 61M.

  The back folding plate 62 is arranged on the upstream side of the back plate 61 and folds the cover sheet supported by the back plate 61. Therefore, a pair of back folding plates 62 (62a and 62b) are arranged on the left and right sides of the bookbinding path 33, and are configured to be able to approach and separate from each other. The left and right back folding plates 62a and 62b are connected to an operating motor 62M by a rack gear 62r and a transmission pinion 62p, respectively.

  Therefore, when the left and right actuation motors 62M are rotated by the same amount, the pressure surfaces of the back folding plates 62a and 62b bend the back binding portion of the cover sheet to form a back cover. In FIG. 3, reference numeral 34 denotes a cover conveyance path, and 34a denotes a conveyance roller disposed in this path. The upper guide 34g that forms the cover transport path 34 is configured to swing up and down together with the transport roller 34a to open the bookbinding path 33.

  The cover sheet fed and set to the cover transport path 34 by the back support plate 61 and the back folding plate 62 is backed up and supported by the back support plate 61 and is fed from the bookbinding path 33 by the grip transport means 47. Is abutted in an inverted T shape. After this joining, the back folding plate 62 is moved closer to the separating position (from the state shown in FIG. 3). Then, the cover sheet is folded over the middle sheet bundle to form a spine cover. A folding roll 63 is arranged on the downstream side of the back plate 61. The folding roll 63 is composed of a pair of rollers that are in pressure contact with each other. Although not shown, one of the rollers moves in the width direction in a direction perpendicular to the conveying direction according to the thickness of the sheet bundle.

  In the present invention, a first cooling stage Fs (shown is a bookbinding binding position) and a second cooling stage Gs (shown is a cutting position) are disposed between the bookbinding binding position F and a cutting position G described later. It is characterized by that. The control configuration will be described later.

[Configuration of bundle posture deflection means and cutting means]
On the downstream side of the folding roll 63, a bundle posture deflecting means 64 for deflecting the top and bottom direction of the sheet bundle and a cutting means 65 for trimming and cutting the periphery of the sheet bundle are arranged. The configuration will be described sequentially. The bundle posture deflecting unit 64 deflects the sheet bundle mounted from the bookbinding binding position F in a predetermined direction (posture) and feeds it to the cutting position G on the downstream side.

  That is, the deflection and cutting of the bundle posture is repeated in the order of the top portion, the ground portion, and the fore edge portion (when trimming in three directions) for the sheet bundle sent from the bookbinding position F. Further, at the time of unidirectional trimming, the sheet bundle having the back binding portion fed downward is turned 180 degrees and the fore edge portion is fed and set to the cutting position G. Similarly, in the case of two-way trimming, the sheet bundle is turned and fed to the cutting position G. After the cutting, the sheet bundle is turned again and set to the cutting position G.

  Therefore, the bundle posture deflecting means 64 includes a pair of left and right rotary tables 64a and 64b. The rotary tables 64a and 64b are rotatably attached to the unit frame 64x, and are connected to the turning motors Mt1 and Mt2, respectively. One of the rotary tables 64a and 64b is attached so as to be movable in the sheet bundle thickness direction, and Mg in the drawing is a grip motor that moves the movable rotary table 64b in the width direction.

  The unit frame 64x configured as described above is supported by the apparatus frame so as to be movable up and down along the bookbinding path 33. Then, the sheet bundle is fed and set to the cutting position G by the lifting motor MS and the lifting belt 53, and the trimming cut amount is set at this time. Se4 in the drawing is a sheet sensor that detects the trailing end of the sheet bundle that has passed through the folding roll 63.

  Accordingly, the sheet bundle guided into the bookbinding path 33 is gripped by the pair of left and right rotary tables 64a and 64b, and the posture direction of the sheet bundle is deflected by the turning motors Mt1 and Mt2. For example, the sheet bundle having the back portion carried downward is turned 180 degrees, and the small edge portion is sent downward to the discharge roller 66 on the downstream side. Further, it is possible to perform a trimming cut in which the sheet bundle is sequentially rotated by 90 degrees, and the top portion, the ground portion, and the fore edge portion are deflected downward at the cutting position G on the downstream side to cut the three peripheral directions of the sheet bundle. The movable rotary table 64b is provided with a grip sensor (not shown) to detect that the sheet bundle is securely gripped between the left and right rotary tables 64a and 64b, and the post-detection rotary table 64a. , 64b is driven to turn.

[Composition of cutting means]
A cutting means 65 is disposed downstream of the bundle posture deflecting means 64. As shown in FIG. 3, the cutting means 65 includes a cutting edge press means 65b for pressing the cutting edge of the sheet bundle against the backup member 58, and a cutting blade unit 65a. The cutting edge press means 65b includes a pressing member 65y that presses the sheet bundle and an urging means (not shown) that applies pressure to the pressing member 65y. The cutting blade unit 65a includes a flat blade-shaped cutting blade 65x and a cutter motor (driving means) Mc that reciprocates the cutting blade 65x. By the cutting means 65 having such a configuration, a predetermined amount of the peripheral edge except the back portion of the sheet bundle that has been bound into a booklet is cut and aligned.

  The second cooling stage Gs is set at the cutting position G described above, and the back binding portion (adhesive glue) of the sheet bundle bound by the cutting blade 65x is cooled at this position. For this reason, the cutting blade 65x and the holder member 65v for mounting the cutting blade 65x are each made of a metal material and a material having high thermal conductivity.

  In the bundle conveyance path (bookbinding path 33 in the figure) from the bookbinding and binding position F to the cutting position G, a plurality of first cooling stages Fs are arranged on the upstream side, and a plurality of second cooling stages Gs are arranged on the downstream side. The first cooling stage Fs is set at the binding position F, and the second cooling stage Gs is set at the cutting position G. This is because the cooling means arranged on each stage is also used as the bookbinding processing means. That is, the back binding portion of the sheet bundle is forcibly cooled by the back plate 61 provided in the first cooling stage Fs, and the back binding portion of the sheet bundle is forcibly cooled by the cutting blade 65x provided in the second cooling stage Gs. Yes. Therefore, the first and second cooling stages Fs and Gs may be arranged at positions different from the bookbinding position F and the cutting position G.

  The interval L0 between the first cooling stage Fs and the second cooling stage Gs is set longer than the length Ls in the conveying direction of the maximum size sheet. That is, the path length is set to a dimension in which the rear end of the sheet bundle whose leading end has reached the cutting position G is located downstream of the bookbinding binding position F. Thus, the sheet bundle can be swung for posture deflection downstream of the bookbinding binding position F, and the binding operation of the subsequent sheet bundle can be executed in parallel at the bookbinding binding position F.

  Based on such a configuration, the sheet bundle that has been bound and bound is cooled by the second cooling stage Gs according to the operation time of the cutting process of the preceding sheet at the cutting position G, and the binding operation of the subsequent sheet bundle is performed at the binding position F. Control to run in parallel. Therefore, a “cutting finishing setting unit” and a “cooling condition setting unit” are provided in a control unit (control CPU 75 described later) that controls the sheet bundle conveying unit 47 and the cutting unit 65. Its configuration will be described later.

The present invention is characterized in that the cutting blade 65x is cooled by the cooling means 80 before or during the cutting of the sheet bundle at the cutting position G. At this time, since the cooling means 80 is disposed at a position where the sheet bundle can be simultaneously cooled, the cooling means 80 and the sheet bundle can be simultaneously cooled.

  On the downstream side of the cutting position G, a paper discharge roller (paper discharge means) 66 and a storage stacker 67 are arranged. The storage stacker 67 stores the sheet bundle in an inverted posture as shown in FIG. As shown in FIG. 1, the storage stacker 67 is arranged in a drawer shape on the casing 30, and is configured to be able to be pulled out to the front side of the apparatus (the front side in FIG. 1). The user can take out from the upper side of FIG. Incidentally, 67Sf shown in the figure is a fullness detection sensor, which detects the full state of the sheet bundle stored in the storage stacker 67 and warns the operator of the removal.

[Configuration of waste storage box]
Further, on the downstream side of the cutting position G, a paper discharge roller (paper discharge means) 66 for carrying out the sheet bundle to the storage stacker 67 is provided, and this paper discharge means 66 is composed of a pair of rollers 66a and 66b. The illustrated roller 66b is configured to be movable in the sheet width direction, and is configured to change the nip position according to the thickness of the sheet bundle.

  Further, below the cutting position G, a waste storage box 68 is provided in parallel with the storage stacker 67 and stores a piece of paper cut by the cutting blade 65x. Therefore, a sweeper means 69 is provided immediately below the cutting position G. The sweeper 69 is swung in the left-right direction in FIG. 2 by a drive motor (not shown), and is positioned immediately below the cutting position G when cutting a sheet bundle. Then, the cut pieces are guided to the waste storage box 68, and after cutting, the sheet bundle is retracted from the cutting position G so that the sheet bundle can be stored in the storage stacker 67. The waste storage box 68 is provided with a full detection sensor (full detection sensor) 68Sf for detecting the storage amount of the cut paper pieces stored inside.

[Configuration of post-processing equipment]
The bookbinding apparatus B is provided with a post-processing apparatus C. The post-processing apparatus C is provided with a post-processing path 38 connected to the cover sheet transport path 34. The post-processing path 38 includes a staple unit, a punch unit, and a stamp unit. Post-processing devices such as these are arranged, and a print sheet from the image forming apparatus A is received via the cover sheet conveyance path 34, subjected to a staple process, a punch process, and a seal process, and is carried out to a discharge tray 37. Further, the sheet from the image forming apparatus A that is not subjected to such post-processing is stored in the paper discharge tray 37.

[Configuration of control means]
Next, the configuration of the control means in the above-described apparatus will be described with reference to FIG. In a system in which the image forming apparatus A and the bookbinding apparatus B are connected as shown in FIG. 1, for example, a control CPU 71 provided in the image forming apparatus A is provided with a control panel 71 and mode setting means 72. A control CPU 75 is provided in the control unit of the bookbinding apparatus B, and the control CPU 75 calls a bookbinding process execution program from the ROM 76 and executes each process in the bookbinding path 33.

  The control CPU 70 (image forming control unit 4 in FIG. 1) is set with image forming conditions from the control panel 71, and the image forming control unit 4 sets the printing unit 3 and paper feed in the image forming apparatus A according to the setting conditions. Control part 2. At the same time, mode setting means 72 is configured in the control CPU 70, and a control mode for post-processing operations in the bookbinding apparatus B is set from the control panel 71. This control mode is configured to select “bookbinding mode”, “bookbinding cutting mode”, “printout mode”, “post-processing mode”, and the like.

  For example, in the “bookbinding mode”, the sheets on which the images are formed are aligned in a bundle shape and bound (cover binding without cover) is possible and stored in the storage stacker 67 without trimming in this binding state. In the “bookbinding cutting mode”, a bundle of intermediate paper sheets coated with an adhesive is bound or bound with a cover sheet at the binding position F, and the peripheral edge is trimmed and stored in the storage stacker 67. In the “print-out mode”, the sheet sent to the carry-in path 31 is stored in the paper discharge tray 37 of the post-processing apparatus C via the cover transport path 34 without performing the bookbinding process. In the “post-processing mode”, the sheet sent to the carry-in path 31 is guided to the post-processing apparatus C via the cover transport path 34 without performing the bookbinding process, and the staple process, the punch process, and the seal process are performed by this apparatus. It is carried out to the paper discharge tray 37.

[Cutting finish setting method]
In the “bookbinding cutting mode”, the bound sheet bundle is trimmed by one of the following methods. The trimming finishing conditions are (1) three-way cutting (hereinafter referred to as “three-way trimming”) for cutting the top, ground, and fore edge of a bound sheet bundle, or (2) one-direction for cutting the fore edge. Either cutting (hereinafter referred to as “small edge trimming”) or two-way cutting (hereinafter referred to as “two-way trimming”) such as top, ground / top, small edge / ground / small edge, or the like.

  The “cutting finishing setting means” for setting the trimming finishing conditions is configured by mode setting means 72 input from the control panel 71 of the image forming apparatus A as shown in the figure, or a control panel (not shown) is added to the bookbinding apparatus B. Provided and input from this panel or set from a controller such as a computer connected to the bookbinding apparatus B. As described above, the “cutting finishing setting unit” of the present invention may be provided in an external device connected to the upstream side of the bookbinding apparatus B or may be disposed in the bookbinding apparatus B itself. Details of the case where the trimming finishing setting means 72 is provided in the image forming apparatus A will be described below.

  A post-processing mode instruction signal, job end signal, sheet size information, and number of copies information are transmitted from the control CPU 70 of the image forming apparatus A to the control CPU 75 disposed in the bookbinding apparatus B. In the post-processing mode instruction signal, when “bookbinding cutting mode” is set, trimming finishing information and trimming cut amount information are transmitted together with a mode command signal. The control CPU 75 is wired so that detection signals of sheet sensors arranged in the carry-in path 31, the bookbinding path 33, and the cover sheet conveyance path 34 are transmitted. The sheet sensors are sheet sensors Se1 to Se6 illustrated in FIG.

  The control CPU 75 includes an “integration control unit 75a”, “adhesive application control unit 75b”, “cover binding control unit 75c”, “cutting control unit 75d”, “stack control unit 75e”, and “adhesive temperature control unit 75f”. . The cutting control unit 75d is provided with “cooling condition setting means 78”.

[Configuration of cooling condition setting means]
The cooling condition setting means 78 sets (1) the total cooling time TA of the sheet bundle that has been bound at the bookbinding position F, and (2) Ft for cooling the total cooling time TA by the first cooling stage Fs. And the cooling time Gt for cooling in the second cooling stage Gs.

  First, the total cooling time TA is stored in advance in the RAM 77 as a design value according to the properties of the adhesive to be used. In this case, the illustrated one is configured such that the total cooling time TA is set in accordance with the amount of adhesive applied at the application position E. For this reason, the sheet bundle conveying means 47 is provided with a bundle thickness detecting means Th, and the amount of adhesive applied is proportional to the sheet bundle thickness. Therefore, the total cooling time TA is preset according to the sheet bundle thickness and stored in the RAM 77.

  Therefore, the cooling condition setting unit 78 reads the total cooling time TA corresponding to the detection value from the bundle thickness detection unit Th from the RAM 77. For example, a data table is prepared in the RAM 77 such that TA = 30 sec when the bundle thickness is 0 to 10 mm, TA = 40 sec when the bundle thickness is 11 to 20 mm, and TA = 50 sec when the bundle thickness is 21 to 30 mm. Thus, the total cooling time TA is set (see FIG. 11).

  Next, the cooling condition setting unit 78 sets the cooling time Ft of the first cooling stage Fs and the cooling time Gt of the second cooling stage G based on the total cooling time TA. The allocation of the cooling time is set according to the location and / or the number of sides of the trimming cut side of the preceding sheet bundle at the cutting position G.

  For example, when the preceding sheet bundle is set to the three-way trimming by the trimming finishing setting unit 72, Ft = 100% and Gt = 0% are set, and the trimming finishing setting unit 72 is set to the two-way trimming. In some cases, Ft = 85% and Gt = 25% are set, and in the case where the trimming finish setting means 72 is set for trimming of the fore edge, Ft = 60% and Gt = 40% are set.

  As described above, the cooling condition setting unit 78 sets the cooling time Ft of the first cooling stage Fs to be large when the number of cut sides is large, and sets the cooling time Gt of the second cooling stage Gs to be small. This is because the cooling time Ft of the first cooling stage Fs is set to be large while the preceding sheet is being cut at the cutting position G so as not to interfere with the processing operation.

  Further, the cooling condition setting means 78 sets the total cooling time TA smaller than the total cooling time at the time of two-way and three-way trimming at the time of trimming the fore edge. For example, when the total cooling time TA at the time of two-way trimming and three-way trimming is “30 sec”, the total cooling time TA is set at “20 sec” at the edge trimming. This is because the adhesive that is being cooled is not cut because the spine portion is not cut when the small edge portion is cut.

[Description of bookbinding cutting operation]
Next, the bookbinding processing operation by the control CPU 75 will be described with reference to the flowchart of FIG. The image forming conditions and the post-processing mode are set from the control panel 71 to the mode setting means 72 of the image forming apparatus A (St001). As described above, the post-processing mode is set to “bookbinding mode”, “bookbinding cutting mode”, or the like.

  Accordingly, when the “bookbinding cutting mode” is selected as the post-processing mode, the image forming apparatus A executes an image forming operation and carries out the image-formed sheet to the paper discharge port 14 (St002). In the bookbinding apparatus B, the sheet is received in the carry-in path 31. At this time, the control CPU 75 positions the route switching flapper 36 in the state shown in FIG. This sheet is sent to the paper discharge port 32x by the transport roller 32a, and is sequentially stacked and stored on the stacking tray 41 (St003).

  Therefore, upon receiving a job end signal (St004) from the image forming apparatus A, the control CPU 75 carries out the sheet bundle on the stacking tray 41 by the grip conveying means 47 and deflects its posture by 90 degrees. At this time, the control CPU 75 detects the thickness of the sheet bundle with a detection signal from the bundle thickness detecting means Th. This detected value is stored in the RAM 77. Next, the sheet bundle aligned on the stacking tray 41 is deflected from the horizontal posture to the vertical posture, and is transferred to the adhesive application position E on the downstream side through the bookbinding path 33 (St005).

  The control CPU 75 feeds the cover sheet from the cover transport path 34 before and after the feeding set of the sheet bundle to the adhesive application position E. This cover sheet may be supplied after being formed with an image from the image forming apparatus A or supplied from the inserter apparatus 26. When the sheet is fed from the inserter device 26, the control CPU 75 operates sheet feeding means (not shown) to separate the sheets one by one from the sheet feeding tray 26a and feed them to the sheet feeding path 27.

  The sheet sent to the paper feed path 27 is conveyed to the carry-in path 31 by the conveyance roller 27a. At this time, the control CPU 75 positions the path switching piece 28 in the state shown in FIG. The cover transport path 34 is provided with a registration mechanism 34b that corrects the posture of the sheet, and the sheet aligned by the registration mechanism 34b reaches a bookbinding binding position F by being transported a predetermined amount from this position and is set stationary. (St006). Following the cover sheet feeding and setting, the control CPU 75 drives the adhesive application means 55 to apply the adhesive to the sheet bundle set at the adhesive application position E (St007). The glue container 56 provided with the application roll 57 moves along the lower edge of the sheet bundle, and applies the adhesive impregnated on the roll surface to the sheet bundle.

  After completion of the adhesive application operation, the control CPU 75 transfers the sheet bundle to the downstream binding position F by the grip conveying means 47. Then, since a cover sheet is set at this position, the cover sheet is backed up to the back plate 61 and the sheet bundle is joined in an inverted T shape. Next, in this state, the back folding plate 62 press-forms the back part of the cover sheet and mounts the sheet bundle (St008).

  Next, the control CPU 75 determines whether to trim trimming. At the same time, the control CPU 75 sets the total cooling time TA. The total cooling time TA is set according to the sheet bundle thickness Th, for example, 30 sec when the bundle thickness Th = 0 to 10 mm, 40 sec when Th = 11 to 20 mm, and 50 sec when Th = 21 to 30 mm. When Th> 30, Th = 60 sec is set. This total cooling time TA is set according to the bundle thickness of the sheet bundle that is read out and bound from the data table stored in the setting RAM 77 in advance according to the properties of the adhesive (St009).

  Next, the control CPU 75 assigns cooling times Ft and Gt in the first and second cooling stages based on the cutting process conditions of the preceding sheet. As described above, when the preceding sheet is trimmed in three directions, Ft = 100% and Gt = 0%, and when the preceding sheet is trimmed in two directions, Ft = 65% and Gt = 35%. When the preceding sheet is trimmed in one direction, Ft = 35% and Gt = 65% are set. When the preceding sheet is not trimmed, Ft = 0% and Gt = 100% are set (St010).

  With this setting, the cooling time Ft in the first cooling stage and the cooling time Gt in the second cooling stage are set. Therefore, the control CPU 75 detects the end signal of the cover binding operation by the position sensors of the back folding plates 62a and 62b. Then, the control CPU 75 waits for the elapse of a predetermined cooling time Ft from the operation completion signal when the back folding plates 62a and 62b are returned to the standby positions separated from each other (St011). After the set time Ft elapses, the control CPU 75 retracts the back plate 61 from the bookbinding path 33 and simultaneously releases the grip of the sheet bundle conveying unit 47.

  Then, the sheet bundle falls downward from the bookbinding position F and is nipped by the folding roll 63. Accordingly, the control CPU 75 rotates the folding roll 63 in the paper discharge direction and sends the sheet bundle downstream (St012). In this case, when the cooling time Ft in the first cooling stage F is set to zero, the control CPU 75 drops and feeds the sheet bundle to the folding roll 63 without delay by an operation completion signal of the back folding plate.

  Simultaneously with the rotation control of the folding roll 63, the control CPU 75 positions the cutting blade 65x at the cutting position Cp (state shown in FIG. 3) (St013). Then, the sheet bundle falls on the cutting blade 65x. Therefore, the control CPU 75 activates a timer at a timing when the sheet bundle reaches the cutting position G (a signal from a sheet leading edge detection sensor (not shown)) and waits for a predetermined cooling time Gt (St015). The control CPU 75 determines whether or not trimming cut is set before and after the elapse of the cooling time Gt (St016). This setting is determined based on the information from the mode setting means 72 described above. Next, when the trimming cut is set, the control CPU 75 holds the sheet bundle in the nip by the bundle posture deflecting unit 64 (St017). Then, the control CPU 75 turns the sheet bundle in a predetermined direction by the bundle posture deflecting unit 64 so that the top portion, the ground portion, and the fore edge portion of the sheet face the cutting position G (St018).

  Next, the control CPU 75 rotationally drives the lifting motor MS to overrun the lower end portion of the sheet bundle from a predetermined amount (cutting amount) cutting position. This cutting amount is set based on a signal from a sheet lower end detection sensor (not shown). Thereafter, the sheet bundle is pressed and held by the cutting edge press means 65b (St019).

Thereafter, the cutting blade 65x is cooled by the cooling means 80 before the sheet bundle is trimmed and cut by any of the methods shown in FIGS. 7, 8, 9, and 10.
In FIG. 7, the temperature in the sheet cutting device or the temperature of the cutting blade 65x is detected by a detection means (hereinafter referred to as “sensor Se7”), and it is determined whether the detection result is equal to or higher than a predetermined temperature (St020). If it is determined that the temperature is equal to or higher than the predetermined temperature, the cutting blade 65x is cooled by the cooling means 80 for a predetermined time (St021). At this time, as shown in FIG. 12, since the cooling means 80 is disposed at a position for cooling both the cutting blade 65x and the sheet bundle, the cooling means 80 is configured to simultaneously cool not only the cutting blade 65x but also the sheet bundle. Thereafter, the temperature of the sheet cutting device or the cutting blade 65x is detected again by the sensor Se7 (St022), and if it is lower than the predetermined temperature, the cooling means 80 is stopped (St023). The cooling unit 80 continues to cool the bundle while the sheet bundle cutting operation is being executed.

  In FIG. 8, the temperature in the sheet cutting device or the temperature of the cutting blade 65x is detected by the sensor Se7, and it is determined whether the detection result is equal to or higher than a predetermined temperature (St020). After determining the temperature of the sheet cutting device or the cutting blade 65x, if the temperature is equal to or higher than the predetermined temperature, the cooling time of the cooling means 80 is set longer (St030). If the temperature is lower than the predetermined temperature, the cooling means is set. The cooling time of 80 is set short (St031). At this time, as shown in FIG. 12, since the cooling means 80 is disposed at a position for cooling both the cutting blade 65x and the sheet bundle, not only the cutting blade 65x but also the sheet bundle may be simultaneously cooled. Thereafter, the temperature of the sheet cutting device or the cutting blade 65x is detected again (St022), and if it is lower than the predetermined temperature, the cooling means 80 is stopped (St023), and if it is higher than the predetermined temperature, the sheet bundle cutting operation is performed. During the execution, the cooling means 80 continues to cool (St022).

  In FIG. 9, the temperature in the sheet cutting device or the temperature of the cutting blade 65x is detected by the sensor Se7, and it is determined whether the detection result is equal to or higher than a predetermined temperature (St020). After determining the temperature of the sheet cutting apparatus or the cutting blade 65x, if the temperature is higher than the predetermined temperature, the wind pressure of the cooling means 80 is set strong (St032). If the temperature is lower than the predetermined temperature, the cooling means 80 The wind pressure is set to be weak (St033). At this time, as shown in FIG. 12, since the cooling means 80 is disposed at a position for cooling both the cutting blade 65x and the sheet bundle, not only the cutting blade 65x but also the sheet bundle may be simultaneously cooled. Thereafter, the temperature of the sheet cutting device or the cutting blade 65x is detected again (St022), and if it is lower than the predetermined temperature, the cooling means 80 is stopped (St023), and if it is higher than the predetermined temperature, the sheet bundle cutting operation is performed. Even during execution, the cooling means 80 keeps cooling.

  In FIG. 10, it is determined whether the thickness of the sheet bundle or the number of sheets is equal to or greater than a predetermined value (St033). After determining whether the thickness of the sheet bundle or the number of sheets is equal to or greater than a predetermined number, if the thickness is equal to or greater than the predetermined number, the cooling time of the cooling unit 80 is set longer or the wind pressure is set stronger ( St035) If the thickness is equal to or less than the predetermined thickness, the cooling time of the cooling means 80 is set shorter or the wind pressure is set weaker (St036). At this time, as shown in FIG. 12, since the cooling means 80 is disposed at a position for cooling both the cutting blade 65x and the sheet bundle, not only the cutting blade 65x but also the sheet bundle may be simultaneously cooled. Thereafter, the temperature of the sheet cutting device or the cutting blade 65x is detected again (St022), and if it is lower than the predetermined temperature, the cooling means 80 is stopped (St023), and if it is higher than the predetermined temperature, the sheet bundle cutting operation is executed. The cooling means 80 continues to cool the inside.

After cooling the cutting blade 65x by any one of the methods 0093 to 0096, the control CPU 75 moves the cutting blade 65x from the standby position to the cutting position by the cutter motor Mc. As a result, the sheet bundle is cut by a predetermined amount at the lower end (St024).
At this time, if the cooling means 80 continues cooling during trimming cut of the sheet bundle, the cooling means is stopped (St026).

  Next, the control CPU 75 turns the sheet bundle at a predetermined angle, for example, 180 degrees by the bundle posture deflecting means 64, positions the ground portion on the lower end side, and similarly cuts a predetermined amount. Thereafter, the sheet bundle is further rotated by 90 degrees, and the fore edge portion is positioned at the lower end and cut in the same manner. Then, when all the cuttings are finished (St025), the control CPU 75 releases the sheet bundle by the bundle posture deflecting unit 64 (St027). Then, the sheet bundle falls on the paper discharge roller 66 and is stored in the storage stacker 67 by driving the paper discharge roller (St028, St029).

A Image forming apparatus B Bookbinding apparatus F Bookbinding position G Cutting position 31 Carry-in path 32 Middle paper transport path 33 Bookbinding path (bundle transport path)
34 cover sheet transport path 40 stacking unit 41 stacking tray (sheet stacking means)
47 Grip conveying means (sheet bundle conveying means)
55 Adhesive application means 60 Cover binding means 61 Backing plate 62 Back folding plate 63 Folding roll 64 Bundle orientation deflecting means 65 Cutting means 65x Cutting blade 66 Paper discharge roller (paper discharge means)
67 Storage stacker 68 Waste storage box 68a Sheet center receiving surface 68b Blade receiving surface 68c Cutting edge receiving surface 68y Recessed groove 70 Control CPU (image forming apparatus)
71 Control panel 72 Mode setting means (cutting finishing setting means)
73 Image forming apparatus controller 75 Control CPU (bookbinding apparatus)
78 Cooling condition setting means 80 Cooling means 81 Suction hole 82 Discharge hole 83 Fan case Fs First cooling stage Gs Second cooling stage TA Total cooling time Ft Cooling time (first cooling stage)
Gt cooling time (second cooling stage)
Se7 sensor (detection means)

Claims (9)

Sheet stacking means for stacking and storing sheets sequentially carried out in a bundle;
A bundle conveyance path for transferring the sheet bundle from the sheet stacking means in the order of the application position, the binding position, and the cutting position;
An adhesive application means for applying an adhesive to the sheet bundle at the application position;
Binding means for binding the sheet bundle at the binding position and the cover sheet;
Cutting means for trimming and cutting the periphery of the sheet bundle at the cutting position;
A sheet bundle conveying means that is arranged in the bundle conveying path and sequentially transfers the sheet bundle to the downstream side;
Control means for controlling the sheet bundle conveying means and the cutting means;
With
The sheet cutting apparatus further comprises a cooling unit that cools the cutting unit that trims and cuts a peripheral edge of the sheet bundle that is bound by the binding unit. Sheet stacking means for stacking and storing sheets sequentially carried out in a bundle;
A bundle conveyance path for transferring the sheet bundle from the sheet stacking means in the order of the application position, the binding position, and the cutting position;
An adhesive application means for applying an adhesive to the sheet bundle at the application position;
Binding means for binding the sheet bundle at the binding position and the cover sheet;
Cutting means for trimming and cutting the periphery of the sheet bundle at the cutting position;
A sheet bundle conveying means that is arranged in the bundle conveying path and sequentially transfers the sheet bundle to the downstream side;
Control means for controlling the sheet bundle conveying means and the cutting means;
With
The sheet cutting device further comprising: a sheet bundle that is bound by the binding means; and a cooling unit that cools the cutting unit that trims and cuts the periphery of the sheet bundle. The sheet cutting apparatus according to claim 1, wherein the cooling unit operates before trimming the periphery of the sheet bundle by the cutting unit. The sheet cutting apparatus according to claim 1 or 2, wherein the cooling means operates the trimming cut of the periphery of the sheet bundle by the cutting means. The control means further comprises a detection means for detecting a temperature in the sheet cutting apparatus or a temperature of the cutting means, and operates the cooling means based on a detection result of the detection means. Item 3. A sheet cutting apparatus according to item 1 or 2. 6. The sheet cutting apparatus according to claim 5, wherein the cooling unit varies the operation time based on a detection result of the detection unit. 6. The sheet cutting apparatus according to claim 5, wherein the cooling unit varies the wind pressure based on a detection result of the detection unit. 6. The sheet cutting apparatus according to claim 5, wherein the cooling unit changes a cooling time or a wind pressure of the cooling unit according to a thickness of the sheet bundle or the number of sheets. The sheet cutting apparatus according to claim 1 or 2, wherein the cooling unit stops when cutting a fore edge portion of the sheet bundle.

Images