JP2009154247A - Sheet bundle cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet bundle cutting device capable of exactly cutting and uniformizing one side or three sides of each of sheet bundles bound in back parts. <P>SOLUTION: This cutting device is provided with a back part detection means for detecting back binding parts at a tray means for setting the sheet bundles or in a conveying passage for conveying the sheet bundles to a prescribed cutting position. Based on the detection information from the back part detection means, a cutting means is controlled. In this case, the back binding parts of the sheet bundles are comparatively easily detected by a metal detection means for detecting the presence or absence of a stable needle or a detecting piece piercing between sheet leaves, for instance, as the back part detection means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sheet bundle cutting device that cuts the periphery of a sheet bundle that is aligned in a bundle, and includes a cutting mechanism that cuts and aligns one side of the edge, top, and ground of a sheet bundle that is bound to the back. Regarding improvement.

  2. Description of the Related Art In general, a bookbinding device that binds back end edges of sheet bundles that are stacked and aligned is widely known as a terminal device of an image forming apparatus such as a printing machine or a copying machine. For binding the back of the sheet bundle, binding means such as staple binding, bookbinding glue binding, and bookbinding yarn binding are known.

  Conventionally, various cutting apparatuses for trimming and cutting the three sides excluding the back binding portion of the sheet bundle bound by such a binding means have been proposed. For example, in Patent Document 1, a sheet bundle set at a receiving port is conveyed to a cutting position on the downstream side, and a turntable for deflecting the posture of the sheet bundle is provided at the cutting position to cut the sheet bundle while deflecting the posture of the sheet bundle. A trimming device that cuts a top portion, a ground portion, and a fore edge portion in order with a blade is disclosed.

Conventionally, in such a cutting apparatus, it is necessary to accurately set the sheet bundle on the tray means prepared at the receiving port.
JP 2006-26754 A

  As described above, when a sheet bundle set on a predetermined tray unit is transferred to a cutting position and the three sides or one side thereof is trimmed and aligned, the sheet bundle is conventionally set at a posture position preset in the tray unit. Is assumed to be set. Therefore, if the user mistakenly sets the posture position of the sheet bundle on the tray means, the back binding portion may be cut, and such a setting error is discarded as an erroneous operation.

  For this reason, even if a predetermined number of sheets are printed and the back portions are bound and bookbinding is performed, the bound back portion is cut if the posture set in the cutting apparatus is mistaken at the time of the final cutting finish. This causes a problem that must be printed again. Therefore, great care must be taken when cutting and finishing, and if this is mistaken, a great deal of work must be performed again.

  Therefore, the present inventor has come up with the idea that the above-mentioned problem can be solved by detecting the back position of the sheet bundle set on the tray means for cutting finishing. That is, by detecting the back position of the sheet bundle set on the tray means, the user is warned of an erroneous operation and prompted to reset it, or the subsequent cutting operation is prohibited, and it is determined that erroneous cutting can be prevented. It came to.

  The main object of the present invention is to provide a sheet bundle cutting apparatus capable of accurately cutting and aligning one side or three sides of a sheet bundle with the back portions bound together. Another object of the present invention is to provide an apparatus at a low cost by detecting a back binding position of a sheet bundle set on a tray means for a cutting process with a simple detection mechanism.

  In order to achieve the above object, the present invention provides a tray means for setting a sheet bundle or a back detection means for detecting a back binding portion in a conveyance path for conveying the sheet bundle to a predetermined cutting position, and detection from the back detection means. The cutting means is controlled based on the information. In this case, as the back portion detecting means, for example, a metal detecting means for detecting the presence or absence of a back-stitched staple needle or a detecting piece inserted between sheet leaves is used to detect the back-bound portion of the sheet bundle relatively easily. I can do it. The specific configuration will be described in detail below.

  A cutting device that cuts at least one side of a sheet bundle, a top portion, and a ground portion of a bundle of sheets that are bound together at a back portion, a tray unit that sets a bundle of sheets aligned in a bundle shape, and a sheet from the tray unit A sheet bundle conveying path for transferring the bundle to a predetermined cutting position, a cutting means arranged at the cutting position for cutting at least one side of the sheet bundle, a control means for the cutting means, and the tray means or the sheet bundle conveying path. And a back detection means for detecting a back binding portion of the sheet bundle. The control means controls the sheet bundle cutting operation by the cutting means based on the detection information from the back detection means.

  The back detection means is configured to detect whether or not the back binding portion of the sheet bundle set on the tray means is positioned at a predetermined position, and the control means detects detection information from the back detection means. When the back binding portion of the sheet bundle set on the tray means is not in a predetermined position, the sheet bundle is not taken out from the tray means, or the sheet bundle cutting operation by the cutting means is prohibited. .

  The control means has a display means for displaying a warning that the back binding portion of the sheet bundle set on the tray means is not in a predetermined position based on detection information from the back detection means.

  The back detection means includes a metal detection sensor such as a magnetic sensor or an ultrasonic sensor that detects the presence or absence of staples that bind the back edge of the sheet bundle.

  The back detection means includes a knife-shaped detection piece inserted between the leaves of the back edge of the sheet bundle, an operation means for pressurizing the detection piece with a predetermined pressure, and a position detection means for detecting the position of the detection piece. It consists of.

  A cutting device that cuts at least one side of a sheet bundle, a top portion, and a ground portion of a bundle of sheets that are bound together at a back portion, a tray unit that sets a bundle of sheets aligned in a bundle shape, and a sheet from the tray unit A sheet bundle conveying path for transferring the bundle to a predetermined cutting position; a cutting means arranged at the cutting position for cutting at least one side of the sheet bundle; and a posture of the sheet bundle at the cutting position arranged at the sheet bundle conveying path. A bundle posture deflecting unit that deflects, a control unit that controls the bundle posture deflecting unit and the cutting unit, and a back part detecting unit that is disposed in the tray unit or the sheet bundle conveyance path and detects a back binding portion of the sheet bundle. Is provided. The control means controls the bundle posture deflection means based on detection information from the back part detection means.

  The back detection means is disposed on the tray means so as to detect a back binding portion of the sheet bundle set on the tray means, and the control means is configured to deflect the bundle posture based on detection information from the back detection means. At least one side of the fore edge, top, and ground of the sheet bundle is positioned at the cutting position by means.

  The back detection means is provided in the bundle posture deflection means, and the control means discriminates the back binding portion of the sheet bundle from the detection information from the back detection means, and the bundle posture deflection means based on the determination result. At least one side of the edge portion, top portion, and ground portion of the sheet bundle is positioned at the cutting position.

  The present invention provides a tray means for setting a sheet bundle or a back detection means for detecting a back binding portion in a conveyance path for conveying the sheet bundle at a predetermined cutting position, and a cutting means based on detection information from the back detection means. The following effects can be obtained because the control is performed.

  By detecting the back-binding position of the sheet bundle set on the tray means, the posture position of the sheet bundle is determined, and the user is prompted to reset the sheet bundle, or the subsequent cutting operation is prohibited, thereby causing the sheet bundle to be erroneously set. Cutting mistakes can be prevented.

  Therefore, even if the user sets the sheet bundle on the tray means in an incorrect position and orientation, a cutting mistake is prevented in advance, and the sheet bundle is not discarded due to the erroneous cutting, and the printing and bookbinding operation is not repeated.

  Further, according to the present invention, a bundle posture deflecting unit is provided on the upstream side of the cutting position, and the sheet set on the tray unit is controlled by detecting the back binding position of the sheet bundle reaching the cutting position and controlling the posture deflection in the correct direction. Regardless of the bundle posture, the correct edge can always be trimmed.

  Further, according to the present invention, the binding position of the sheet bundle can be accurately detected with a simple structure by using a metal detection sensor such as a magnetic sensor or an ultrasonic sensor. Like these sensors, it is possible to detect the binding position accurately with a simple structure by adopting a configuration that detects the back binding position by pressing the knife-shaped detection piece inserted between the sheet leaves with a predetermined pressure. It is.

  Hereinafter, the present invention will be described in detail based on preferred embodiments shown in the drawings. FIG. 1 is an explanatory view showing the overall configuration of a bookbinding apparatus according to the present invention, and FIG. 2 is an enlarged view of a main part thereof.

  The present invention applies a hot-melt adhesive such as glue or an adhesive tape to the back end face of a sheet bundle (middle paper sheet) set in a predetermined tray (middle paper tray 2), and covers the sheet bundle. The present invention relates to a bookbinding apparatus A that performs case binding with a cover sheet fed from a tray 31. A bookbinding apparatus A shown in FIG. 1 includes a middle paper tray 2 for accommodating middle paper sheets arranged in a bundle, an adhesive application means 20 for applying an adhesive to the back end surface of the middle paper sheet from the tray, The cover sheet conveying unit 30 is configured to feed and set the cover sheet at the cover sheet binding position Y, and the cover sheet binding unit 40 is disposed at the cover sheet binding position. Then, an adhesive application position (hereinafter referred to as “application position”) X, a cover binding position (hereinafter referred to as “binding position”) Y, and a cutting position Z are sequentially arranged in this order in the bookbinding processing path (hereinafter referred to as “bookbinding path”) 5. Has been placed. Further, at the cutting position Z, cutting means 50 for cutting and aligning the three peripheral edges of the bound sheet bundle is disposed. Each configuration will be described below.

"Composition of middle paper tray"
The intermediate paper tray 2 arranged in the bookbinding path 5 is constituted by a tray for stacking and storing bundled sheets, and the illustrated apparatus is arranged substantially horizontally. The middle paper tray 2 is provided with a regulating member 3 for regulating the position of the rear end of the sheet and side guides 4a and 4b for regulating the position of the sheet side. Therefore, the intermediate paper tray 2 may be fixed to the apparatus frame, but the illustrated one is attached to the apparatus frame so that it can be raised and lowered between the loading position and the unloading position in the vertical direction in FIG. That is, as shown in FIGS. 1 and 2, the rack gear 8 provided at the bottom of the tray is engaged with the pinion 9 of the tray lifting / lowering motor Ma, and the middle paper tray 2 is placed in the stacking position by forward / reverse rotation of the tray lifting / lowering motor Ma (FIG. 1). It moves up and down in the direction of arrow a between the solid line) and the unloading position (dashed line in FIG. 1). Accordingly, the sheet placed on the intermediate paper tray 2 is moved downward in the direction of arrow a from the stacking position, then transferred in the direction of arrow b, and transferred to the subsequent intermediate paper conveyance means (grip conveyance means; hereinafter the same) 10. The Rukoto. 7 is an open / close cover for the intermediate paper tray 2 and is hinged to the apparatus casing so as to be openable and closable.

[Configuration of middle paper width size detection means]
The side guides 4a and 4b are constituted by one or a pair of guide members so that the position of the sheet is regulated on the basis of one side or the center. The illustrated side guides 4a and 4b are provided with a middle paper lateral size detecting means SS1 for detecting the lateral size of the sheet whose position is restricted. Although the structure is shown in FIG. 6, the right side guide 4a and the left side guide 4b arranged on the upper surface of the tray are connected by an interlocking gear 4g so as to approach and separate from each other by the same amount. One side guide 4a is provided with a position detection flag 4f. The position of the flag 4f is detected by a plurality of sensor arrays ss1, thereby identifying the width size of the intermediate paper sheet on the tray. In the case of the one-side reference, the position of the sheet may be regulated by one side guide, and the opposite side edge of the sheet regulated by the guide may be directly detected by a sensor.

[Configuration of tray sensor]
Further, a sheet sensor Se1 for detecting the presence / absence of a sheet is disposed in the above-described middle paper tray 2 (see FIG. 1). Since the configuration of this sensor is known as an empty sensor or the like, a detailed description is omitted, but it is configured to detect whether or not a sheet exists on the tray.

“Composition of medium paper transport means”
An intermediate paper conveying means 10 for conveying the sheet bundle from the intermediate paper tray 2 to the application position X on the downstream side is configured as shown in FIGS. The intermediate paper transporting means 10 is arranged in a bookbinding path 5 arranged in a vertical direction that cuts the apparatus vertically in FIG. Then, the sheet bundle received from the intermediate paper tray 2 in a substantially horizontal posture is rotated by 90 degrees, deflected to a vertical posture, and transferred to the coating position X on the downstream side. For this reason, the intermediate sheet conveying means 10 is composed of a pair of movable clamper 13a and a fixed clamper 13b for holding a sheet bundle, and a unit frame 12 having both the clampers 13a and 13b. The unit frame 12 is rotatably supported on the apparatus frame by the rotation shaft 11, and the unit frame 12 is formed around the rotation axis 11 by rotating and driving the sector gear 15 by the turning motor Mb provided on the apparatus frame side. It is designed to pivot in three clockwise and counterclockwise directions.

  As described above, the movable clamper 13a and the fixed clamper 13b are attached to the unit frame 12 rotatably supported by the apparatus frame as follows. The unit frame 12 is provided with a movable frame 16 fitted and supported by guide rails (rods) 16a (a part of which is shown in FIG. 3). In the movable frame 16, a pinion 17P connected to an elevating motor Mc provided on the unit frame 12 side and a rack gear 17R provided on the movable frame 16 side mesh with each other. Therefore, the movable frame 16 is moved up and down by the lifting motor Mc, and the sheet can be conveyed downstream along the bookbinding path 5.

  Therefore, the fixed clamper 13b and the movable clamper 13a described above are attached to the movable frame 16. The fixed clamper 13b is fixed to the left and right side frames constituting the movable frame 16 with a width size for gripping the sheet, and the rod 18 is provided on the movable clamper 13a. The rod 18 is fitted to the bearing 14 provided on the movable frame 16. It is supported. A pinion of the grip motor Md is meshed with a rack gear 18R integrally formed with the rod 18.

  Accordingly, when the movable clamper 13a approaches the fixed clamper 13b with the grip motor Md, the sheet is nipped (clamped) with the fixed clamper 13b, and when separated in the opposite direction, the nip is released (clamp released). In this way, the sheet bundle is clamped by the grip motor Md, and the gripped sheet bundle is deflected from the horizontal posture to the vertical posture by the turning motor Mb. Therefore, it is transferred to the application position X on the downstream side. Incidentally, Sg shown in the figure is a grip end sensor, which is arranged on the movable clamper 13a and detects whether or not the sheet bundle is securely gripped at a predetermined pressure.

[Configuration of bundle thickness detection means]
The movable clamper 13a is provided with bundle thickness detecting means St1 for detecting the thickness of the grasped sheet bundle. As described above, the movable clamper 13a approaches the fixed clamper 13b by the grip motor Md and grips the sheet bundle. This clamping operation is detected by the grip end sensor Sg. By detecting the position of the movable clamper 13a when this detection signal is issued, the bundle thickness of the sheet bundle to be gripped can be detected. At this time, the sheet is strongly pressed by an urging spring (not shown), so that the detection accuracy is high. Bundle thickness detection is obtained. For this reason, the rod 18 integral with the movable clamper 13a is provided with a bearing 14 and a slidac sensor for detecting the position thereof on the frame 16, and this sensor constitutes the bundle thickness detecting means St1.

"Configuration of adhesive application means"
The adhesive application means 20 includes a glue container 21 that contains an adhesive such as glue, a coating roll 22 that is rotatably mounted in the container, a drive motor Me that rotationally drives the coating roll 22, and the glue. A drive motor Mf that reciprocates the container 21 along the sheet bundle is configured. The conceptual diagram is shown in FIG. 4, and the glue container 21 is formed in a short length (dimension) with respect to the lower end edge of the sheet bundle (the spine cover at the time of bookbinding), and the application roll 22 incorporated in the container is accompanied with it. Are supported by guide rails 24 of the apparatus frame so as to move along the lower edge of the sheet bundle. The glue container 21 is connected to a timing belt 23 attached to the apparatus frame, and a driving motor Mf is connected to the timing belt 23.

  As described above, the configuration in which the glue container 21 itself moves along the sheet bundle has been shown. This is because the glue container 21 is configured in a tray shape longer than the length of the sheet bundle, and only the coating roll 22 is arranged in the left-right direction in FIG. You may make it move. The illustrated application roll 22 is composed of a heat-resistant porous material or silicon rubber, and is configured so as to impregnate the glue and swell the glue layer around the roll.

  Accordingly, the glue container 21 is reciprocated by the drive motor MF between a home position HP, a return position RP for starting a backward operation along the sheet bundle, and a replenishment position EP for replenishing adhesive. Each position is set to the positional relationship shown in FIG. 4, and the return position RP is set by size information of the sheet width. Further, when the apparatus is turned on (initial time), it is set to the home position HP, and after a predetermined time from the sheet grip signal of the preceding grip end sensor Sg of the intermediate paper transport means 10, for example, the sheet bundle reaches the glue application position. At the expected time) from the home position HP to the return position RP. Simultaneously with this movement, the coating roll 22 starts to rotate by the drive motor Me. In addition, Sp shown is a home position sensor of the glue container 21.

  With the rotation of the drive motor Mf, the glue container 21 starts to move from the right side to the left side in FIG. In this forward path, the application roll 22 presses against the sheet bundle to disperse the sheet end, and in the return path from the return position RP to the home position HP, a predetermined gap is formed with the sheet end to apply the adhesive. The feed amount of the above-mentioned middle paper transport means 10 is adjusted by the lifting motor Mc. The application amount adjustment by the feeding amount of the sheet bundle is based on the bundle thickness information from the bundle thickness detecting unit St1 described above, and when the bundle thickness is thick, the gap is increased and the application amount is set to be large. When it is thin, the gap is made small and the coating amount is set small. In this way, instead of adjusting the feeding amount of the sheet bundle by the control of the lifting motor Mc of the intermediate paper transport means 10, roll position adjusting means for adjusting the position of the coating roll 22 up and down may be provided. Further, the drive motor Mf moves to a retracted position EP which is retracted at a distance from the operation position for applying the adhesive to the sheet bundle by a retract instruction signal, and replenishes the adhesive from the adhesive tank 25 disposed at the retracted position EP. Have come to receive.

"Cover Feeder"
Next, the sheet bundle glued by the adhesive application means 20 will be bound with the cover sheet. The feeding of the cover sheet will be described. A cover sheet feeding unit B arranged at the upper part of the bookbinding apparatus A has one or more stages for stacking sheets, the illustrated one is a two-stage stack tray (cover sheet tray; the same applies hereinafter) 31, and the top of the cover sheet tray 31. A pickup means 32 that separates the sheets one by one and a cover sheet conveyance path 6 that guides the sheets from the pickup means 32 to the binding position Y are configured.

  A special sheet such as cardboard or coated paper is prepared in the cover tray 31 as a cover sheet, and the sheet on the tray is carried into the cover transport path 6 by a control signal from the bookbinding apparatus A. The two cover trays 31 are provided so that different types of cover sheets can be prepared in the stacker in advance, and the cover sheets are supplied from one selected stacker.

[Configuration of cover transport path]
The configuration of the cover transport path 6 will be described with reference to FIG. 2. The cover transport path 6 feeds and sets a cover sheet from the cover tray 31 at a binding position Y provided at an intersection with the bookbinding path 5. In particular, the apparatus shown in the figure shows the path length of the cover sheet transport path 6, that is, the path length from the cover sheet tray 31 to the binding position Y (L 1; not shown) as the path length from the middle sheet tray 2 of the bookbinding path 5 to the binding position Y. (L2; not shown) is set such that L1> L2. In order to make the apparatus compact, the intermediate paper tray 2 and the cover tray 31 are arranged in parallel in the vertical direction, and the path length (L1) on the cover tray side is longer than the path length (L2) of the intermediate paper tray 2. . As a result, it is possible to reduce the size of the apparatus configuration that feeds the cover sheets that require double the length of the intermediate sheet to the binding position Y.

  A transport roller for transporting the cover sheet and an aligning mechanism 35 are disposed in the cover transport path 6. The path guide forming the cover sheet transport path 6 is composed of transport guides 36a and 36b that can move up and down between a guide posture and a retracted posture on the upstream side and the downstream side of the binding position Y (see FIG. 2). . This is because when the cover sheet is guided to the binding position Y, it is positioned in the guide position (state shown in FIG. 3), and when the cover sheet is folded back, it is shifted to the retracted position (not shown).

  The aligning mechanism 35 is provided in the cover sheet conveyance path 6, and includes a nip claw 35a for locking the rear end of the cover sheet, an alignment member 35b for offsetting the cover sheet gripped by the nip claw 35a in the conveyance orthogonal direction, It is composed of a forward / reverse roller 35r that switches back to cover the cover sheet sent to the cover transport path 6 against the nip claw 35a. The forward / reverse roller 35r is configured to be movable up and down to a standby position retracted upward from the cover sheet.

  Therefore, the cover sheet carried into the cover sheet transport path 6 is switchback-conveyed by the reverse rotation of the forward / reverse rotation roller 35r after the timing when the rear end of the cover sheet has passed the aligning mechanism 35. Then, the rear end of the sheet is abutted against the nip claw 35a and the skew (skew) is corrected. In this state, the nip claw 35a grips the trailing end of the sheet, and the alignment member 35b on which the nip claw 35a is mounted moves in the width direction in the conveyance orthogonal direction. As a result, the front cover sheet is corrected for skew in the front-rear direction, and the position in the width direction (conveyance orthogonal direction) is corrected (side edge position correction). The cover sheet whose alignment has been corrected in this way is conveyed and set toward the binding position Y on the downstream side by the forward / reverse roller 35r. The feeding set to the binding position Y is performed by a cover sheet conveying means (roller) 30 that conveys a cover sheet from the aligning position by a predetermined amount.

"Configuration of cover binding means"
In the bookbinding path 5, the sheet bundle held by the intermediate paper transport unit 10 is glued to the lower edge of the sheet bundle by the adhesive application unit 20, and the glue container 21 is retracted to the home position HP outside the path. Then, the intermediate paper transport unit 10 transports the sheet bundle from the application position X to the binding position Y along the bookbinding path 5. At the same time, the cover sheet is fed to the binding position Y in the cover transport path 6 and is set stationary. Therefore, a cover binding means 40 is provided at the binding position Y. The cover binding means 40 includes a back plate 41 and back folding press members 42a and 42b.

[Configuration of back plate]
As shown in FIG. 6, at the binding position Y, a back plate 41 in the shape of a shatter blade that shields the bookbinding path 5 is arranged. The back plate 41 is disposed at the binding position Y of the bookbinding path 5 directly below (downstream side) the back folding press members 42a and 42b, and cooperates with the back folding press members 42a and 42b to back-fold the cover sheet. . The back plate 41 is movably disposed at an operating position located in the bookbinding path 5 and a retracted position retracted from the path, and is configured to be advanced and retracted by a driving means (such as an electromagnetic solenoid) not shown. The back plate 41 is formed of a metal plate having a high thermal conductivity and a large heat dissipation effect, and cools the adhesive (shown is a hot-melt adhesive) applied to the sheet bundle. Yes.

[Control of back folding press members]
The back folding press members 42a and 42b are controlled as follows. The back folding press members 42a and 42b are located at the back folding position when feeding the cover sheet from the cover conveying path 6 to the binding position Y, and when joining the sheet bundle from the bookbinding path 5 and the cover sheet. Control is performed so as to be positioned at the home position retracted from the bookbinding path 5. Next, the back folding press members 42a and 42b fold the cover sheet back in the process of moving from the home position to the back folding position. Thus, the left and right back folding press members 42a and 42b are provided with a transmission mechanism such as a drive motor and a rack and pinion.

[Configuration of bundle posture deflection means]
Next, the finishing process for the sheet bundle bound as described above will be described. In this finishing process, three sides of the booklet-like sheet bundle except the back are trimmed and aligned. For this reason, a folding roll 45 is arranged on the downstream side of the cover binding means 40, and further, at the cutting position Z located on the downstream side, a bundle posture deflecting means 46 for deflecting the top and bottom direction of the sheet bundle, and the peripheral edge of the sheet bundle. A cutting means 50 for cutting is disposed. The bundle posture deflecting unit 46 deflects the sheet bundle mounted from the binding position Y in a predetermined direction (posture) and feeds the sheet bundle to the downstream cutting unit 50 or the storage stacker 57. This cutting means 50 cuts and aligns the periphery of the sheet bundle.

  For this purpose, the bundle posture deflecting means 46 includes rotary tables 47 a and 47 b that grip and rotate the sheet bundle sent from the folding roll 45. As shown in FIG. 1, the rotary tables 47a and 47b are provided on a unit frame 48 attached to the apparatus frame so as to be movable up and down. A pair of rotary tables 47a and 47b are rotatably supported by the unit frame 48 with the bookbinding path 5 interposed therebetween, and one movable rotary table 47b is in the sheet bundle thickness direction (a direction orthogonal to the bookbinding path 5). It is supported to move freely. The rotary tables 47a and 47b are provided with turning motors Mt1 and Mt2 so as to deflect the posture of the sheet bundle in the bookbinding processing path. The movable rotary table 47b is equipped with a drive motor Mg that moves in the left-right direction in FIG.

  Accordingly, the sheet bundle guided into the bookbinding path is gripped by the pair of left and right rotary tables 47a and 47b, 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 downstream discharge roller 55. 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 47b is provided with a grip sensor (not shown) to detect that the sheet bundle is securely gripped between the left and right rotary tables 47a and 47b, and the post-detection rotary tables 47a and 47b. Is configured to rotate. The unit frame 48 can move the sheet bundle up and down along the bookbinding path 5 by a lifting motor Mk. This is because the sheet bundle is conveyed and set at the cutting position G and the cutting width at the cutting position G is set by the feed amount when trimming and dividing the sheet bundle periphery.

[Composition of cutting means]
A cutting means 50 is disposed downstream of the bundle posture deflection means 46. As shown in FIG. 6, the cutting means 50 includes a cutting edge press member 52 that presses and supports the cutting edge of the sheet bundle on the blade receiving member 51, and a cutting blade unit 53. The cutting edge press member 52 is disposed at a position facing the blade receiving member 51 disposed in the bookbinding path 5 and is configured by a pressing member (pressurizing unit) that moves in a direction orthogonal to the sheet bundle by a driving unit (not shown). ing. The cutting blade unit 53 includes a flat blade-shaped cutting blade 54 and a cutter motor (driving means) Mh that drives the cutting blade 54. By the cutting means 50 having such a configuration, a predetermined amount of the peripheral edge excluding the back portion of the sheet bundle that has been bound into a booklet is cut and aligned.

  On the downstream side of the cutting position Z, a paper discharge roller 55 and a storage stacker 57 are disposed. As shown in FIG. 1, the storage stacker 57 stores the sheet bundle in a standing position. As shown in FIG. 1, the storage stacker 57 is arranged in a drawer shape on the apparatus main body, and is configured to be able to be pulled out to the front side of the apparatus (front side in FIG. 1). Can be visually recognized.

  The cutting blade 54 is a flat blade-shaped cutting edge as shown in FIG. 5 and is configured with a blade width longer than the sheet width, and a standby position (state of FIG. 9A) spaced from the blade receiving member 51 by a distance d; It is supported so as to be able to reciprocate between a cutting position (a state shown in FIG. 9B) in contact with the blade receiving member 51, and is connected to a cutter motor (driving means) Mh. With such a configuration, the present invention is characterized in that the blade receiving member 51 has the following configuration.

  The blade receiving member 51 is disposed opposite to the cutting blade 54 with a sheet (bundle) interposed therebetween, and is fixed to an apparatus frame (not shown). The blade receiving member 51 includes a sheet center receiving surface 51a that supports the center of the sheet, a blade receiving surface 51b that receives the cutting edge of the cutting blade 54, and a cutting edge receiving surface 51c. Each receiving surface is configured to be continuous with each other to form the same plane. Therefore, the sheet center receiving surface 51a positioned above the cutting line XX and the cutting edge receiving surface 51c positioned below the cutting line XX are made of a conductive material, and the cutting blade XX is cut along the cutting line XX. The blade receiving surface 51b that receives the blade edge is made of a non-conductive material.

  The above-described blade receiving member 51 is selected, for example, as follows. First, an optimum material for the cutting blade is selected as the blade receiving surface 51b. The blade receiving surface 51b has a hardness that does not wear the cutting edge of the cutting blade 54 during cutting, and at the same time, a material having elasticity that does not bite the cut paper piece when the cutting blade 54 strikes and cuts. It is made of resin. Therefore, the blade receiving surface 51b is made of a non-conductive material.

  On the other hand, the sheet center receiving surface 51a and the cutting edge receiving surface 51c are made of a material having appropriate rigidity and conductivity. Although the sheet center receiving surface 51a, the cutting edge receiving surface 51c, and the blade receiving surface 51b may be formed of different members, it is inexpensive to manufacture the same material by the same molding.

  Therefore, in the illustrated example, a plate-like member is formed by two-color molding of synthetic resin, the blade receiving surface 51b is formed to be non-conductive, and the sheet center receiving surface 51a and the cutting edge receiving surface 51c are formed to be conductive. To do. For example, the blade receiving member 51 is formed by molding a synthetic resin material such as polypropylene resin. At this time, a two-color molding method is used in which conductive powder such as tin is mixed into the sheet center receiving surface 51a and the cutting edge receiving surface 51c. Then, the blade receiving member 51 formed into one plate-shaped member has its blade receiving surface 51b formed of only polypropylene resin, and the sheet center receiving surface 51a and the cutting edge receiving surface 51c are mixed with metal powder such as tin. It will be conductive. In addition, this electroconductive powder is mixed so that it may have electroconductivity (so that electroconductive powder may chain). The sheet center receiving surface 51a and the cutting edge receiving surface 51c are grounded.

[Composition of cutting mode]
The above-described bookbinding apparatus A sets a sheet bundle that has not been subjected to binding processing to the intermediate paper tray 2, performs “bookbinding processing mode” in which the booklet binding is performed with the above-described configuration, and is trimmed and stored in the storage stacker 57. 2 is set with a back-bound sheet bundle (hereinafter referred to as “booklet sheet”), and the booklet sheet is transferred to the above-described cutting position Z without bookbinding, and trimming cut, top, The “cutting processing mode” for cutting and aligning one side of each part and fore edge is selectively executed. In this cutting process mode, if the user does not set the booklet sheet in the middle paper tray 2 in the correct posture, for example, the fore edge portion is scheduled to be cut and the back binding portion is actually cut.

  Therefore, the present invention is provided with a back detection means 69 for detecting the back binding portion (back part) of the booklet sheet on the inner tray 2 or the rotary tables 47a and 47b of the bundle posture deflection means 46. The sheet bundle cutting operation by the cutting unit 50 is controlled based on the detection information. The specific configuration will be described below.

[Configuration of back detection means (first embodiment)]
The apparatus shown in FIG. 6 shows a form in which a metal detection sensor 70 such as a magnetic sensor or an ultrasonic sensor is arranged on the inner paper tray 2 (first embodiment). In the first embodiment, it is assumed that a booklet sheet is bound by a staple needle Sh. Therefore, as shown in FIG. 6, side guides 4 a and 4 b and a regulating member 3 that abuts and regulates the front end portion of the booklet sheet are arranged in the intermediate paper tray 2 in order to position the side edges of the booklet sheet set on the tray. Has been. And it is comprised so that the back binding part (back part) of a booklet sheet | seat may be located in this control member 3. FIG.

  Therefore, a metal detection sensor 70 for detecting whether or not the staple needle Sh is present on the back of the booklet sheet positioned on the restriction member 3 is provided as follows. As shown in FIG. 6, a slider 71 that is movable along the edge of the booklet sheet is slidably provided on the intermediate paper tray 2 above the regulating member 3. A metal detection sensor 70 is fixedly supported on the slider 71. The metal detection sensor 70 is composed of a magnetic sensor or an ultrasonic sensor. The magnetic sensor is configured to generate a magnetic field by supplying a current to an induction coil, for example, and to electrically detect a magnetic flux change due to the presence or absence of the staple needle Sh. The ultrasonic sensor is configured so that the vibration receiving element detects that the ultrasonic wave from the oscillation element is changed (attenuated) by the staple needle Sh.

  The metal detection sensor 70 is mounted on a slider 71 and is configured to scan along the edge of the booklet sheet on the tray. For this reason, a scanning motor (not shown) is connected to the illustrated pinion 74 for the slider 71. When the back binding portion of the booklet sheet set on the intermediate paper tray 2 is not positioned on the regulating member 3 by detecting the presence or absence of the staple needle Sh in this way, “cutting prohibition” control described later is executed.

[Configuration of back detection means (second embodiment)]
The form shown in FIG. 7 shows the form which arrange | positions the knife-shaped detection pieces 85a and 85b in the middle paper tray 2 (2nd Embodiment). This 2nd Embodiment assumes the case where a booklet sheet | seat is bound together with the adhesive agent. Therefore, side guides 4a and 4b and a regulating member 3 that abuts and regulates the front end of the booklet sheet are disposed on the intermediate paper tray 2 in order to position the side edges of the set booklet sheet. And it is set so that the back binding part (back part) of a booklet sheet may be located in one of these side guides 4a and 4b (for example, the side guide 4b on the lower side in FIG. 7).

  Accordingly, knife-shaped (thin plate-shaped) detection pieces 85a and 85b are arranged on the pair of side guides 4a and 4b so as to protrude toward the booklet sheet placement surface. The detection pieces 85a and 85b are pressed by a leaf spring 86 in the direction indicated by the arrow in FIG. The detection pieces 85a and 85b are provided with flags 87a and 87b, and sensors 88a and 88b for detecting the positions of the flags.

  Therefore, when a booklet sheet is placed on the intermediate paper tray 2, this is detected by the sheet sensor Se1, and the left and right side guides 4a and 4b are moved from the standby position to the center of the tray. This movement is performed by rotating a pinion 4g connecting the left and right side guides 4a and 4b with a motor (not shown). Then, when the detection pieces 85a and 85b mounted on the left and right side guides 4a and 4b come into contact with the back binding portion of the booklet sheet, the leaf spring 86 is bent and the positions of the flags 87a and 87b are changed (FIG. 8 (c1)). (C2) state). This flag 87a is detected by a sensor 88a. On the other hand, when the detection piece 85 comes into contact with a portion other than the back-binding portion of the booklet sheet (small edge portion, top portion, ground portion), the leading end portion of the detection piece enters between the leaves of the sheet and the shape thereof does not change (see FIG. 8 (b1) (b2) state).

  That is, in FIG. 7, when the back binding portion of the booklet sheet is set so as to be positioned on the lower side in the figure, it is determined that the sensor 88b is turned on and the sensor 88a is turned off, so that it is set in the correct posture. Further, when the sensor 88b is OFF, the sensor 88a is ON, or both are OFF, it is determined that the sensor is abnormal.

  Although the above-described back detection means 69 has been described in the case where it is disposed on the intermediate paper tray 2, it may be disposed on the above-described bundle posture deflection means 46. In this case, instead of the tray 2 described above, back detection means is arranged on the rotary table described above.

[Control during abnormal setting]
As described above, when it is determined that the “booklet sheet setting posture” is abnormal based on the detection signals from the metal detection sensor 70 or the sensors 88a and 88b, the control CPU 65P described later controls the cutting means 50 as follows. To do.

  In the first method, the metal detection sensor 70 or the detection piece 85 described above is disposed on the intermediate paper tray 2. When it is determined that the set signal is “normal” based on the detection signals from these sensors, a warning is displayed (for example, a control panel) that “the set posture is abnormal” and a warning sound is emitted. Simultaneously with this warning display, the operation of the subsequent cutting means 50 and the operation of carrying out the booklet sheet from the intermediate paper tray 2 are prohibited for cutting.

  In the second method, the metal detection sensor 70 or the detection piece 85 is disposed on the intermediate paper tray 2 or the rotation tables 47a and 47b. When the detection signals from these sensors determine that “setting is not normal”, the above-described bundle posture deflecting means 46 changes the orientation of the booklet sheet to the correct posture. For example, when it is determined in the configuration of the second embodiment that the back binding portion is set in the opposite direction, the rotary tables 47a and 47b of the bundle posture deflecting unit 46 are turned 180 degrees by the turning motors Mt1 and Mt2. Then, the booklet sheet is fed and set to the cutting position Z in a correct posture.

  As understood from the above, in the present invention, the metal detection sensor 70 or the detection piece 85 is arranged at three positions so as to detect the three-direction edge of the booklet sheet or detects the two-direction edge of the booklet sheet. In such a manner, it is arranged in two places, or in one place so as to detect the one-direction edge of the booklet sheet, or is set according to the subsequent control. For example, when alerting an abnormal set by placing it on the middle paper tray 2, it is placed at one place so as to detect a predetermined one side edge, and placed on the tray 2 or the rotary tables 47a and 47b to be in a normal posture. In the case of deflecting, it is preferable to arrange at three positions so as to detect the edges in the three directions.

[Configuration of control means]
Next, the control of the bookbinding apparatus A in FIG. 1 will be described. FIG. 10 is a block diagram illustrating a control configuration, and includes a bookbinding control unit 65 provided in the bookbinding apparatus A and a controller 60. In the illustrated apparatus, the controller 60 is constituted by a computer apparatus. As shown in the figure, the controller 60 includes an input unit 61, a display unit 62, and a control CPU 60P, and the bookbinding control unit 65 includes a control CPU 65P built in the bookbinding apparatus A.

  The controller 60 functions as an input means 61 for a user to input processing conditions during bookbinding processing, a storage means for storing input data, and a display means 62 for displaying a jam and other bookbinding processing status. The controller 60 may be integrated into the bookbinding control unit 65.

  In particular, the apparatus shown in the figure inputs “size of intermediate sheet”, “size of cover sheet” and “bundle configuration of intermediate sheet” from the controller 60, and uses these pieces of information as control conditions for bookbinding processing operations to be described later. . In addition, although not shown, the controller 60 has a bookbinding process, for example, a layout function for adjusting the set position of the cover sheet so that the title formed on the back cover is positioned at the center, or the properties of the adhesive used. It is also possible to add a function for setting bookbinding processing conditions such as adjusting the amount of adhesive applied. Therefore, when a computer is used as the controller 60, programming for adding or correcting these functions is easy.

  The bookbinding control unit 65 is connected to a ROM 75 for storing a program for executing a bookbinding processing operation and a RAM 76 for storing data for setting control conditions. The bookbinding control unit 65 includes an apparatus activation control unit 65a, a middle sheet feeding control unit 65b, a cover sheet feeding control unit 65c, an adhesive application control unit 65d, a cover binding processing control unit 65e, a cutting process control unit 65f, and a stack control. Part 65g is configured.

  The bookbinding control unit 65 incorporates suitable size discriminating means 66 for judging whether or not the sheet sizes prepared in the intermediate paper tray 2 and the cover tray 31 can be bound to a predetermined case. The suitable size discriminating means 66 is incorporated in the device activation control unit 65a.

  The apparatus activation control unit 65a sets the sheets of the middle paper and the front cover on the tray in response to signals from the sheet sensor Se1 arranged in the middle paper tray 2 and the second sensor Se2 arranged in the cover tray 31. A sheet presence / absence determining means 67 and a sheet set posture determining means 68 are provided. The posture detection means 68 is connected to the back detection means 69 described above.

  The apparatus activation control unit 65 a configured as described above determines whether or not sheets are set in the intermediate paper tray 2 and the cover tray 31. In the “bookbinding processing mode”, whether or not the lateral sizes of the sheets match, whether or not the bundle thickness of the intermediate paper sheets set in the intermediate paper tray 2 exceeds the allowable maximum bookbinding bundle thickness, It is comprised so that each may be discriminate | determined.

  The intermediate paper feed control unit 65b controls the above-described intermediate paper conveyance means 10. Then, when a predetermined condition is satisfied by the apparatus activation control unit 65a, the intermediate sheet conveying means 10 is activated to carry the intermediate sheet from the intermediate sheet tray 2 into the apparatus. Therefore, the speed setting data 76b for setting the speed at which the intermediate sheet is conveyed from the RAM 76 based on the “bundle configuration information” from the input means 61 is received. In addition, the bundle thickness of the sheet bundle gripped by the intermediate sheet conveying means 10 is detected by the bundle thickness detecting means St1, and the thickness information is stored in the internal memory.

  The cover sheet feeding control unit 65c activates the pickup means 32 arranged on the cover tray 31 to feed the sheets on the tray one by one. The cover sheet feeding control unit 65c is provided with a conveyance amount calculating means (not shown) for positioning the cover sheet at the binding position Y based on the bundle thickness detected by the bundle thickness detecting means St1. .

  The adhesive application control unit 65d includes an application amount setting unit and a temperature setting unit. The RAM 76 provides application amount setting data 76d and adhesive temperature control data 76e. In particular, the application amount setting means sets the application amount based on “bundle configuration information” and “bundle thickness information detected by the bundle thickness detection means” of the intermediate sheet, and according to the setting, the application amount from the grip conveying means 10 is set. The film forming gap between the intermediate paper sheet and the application roller is adjusted.

  The cover binding processing control unit 65e controls the backrest plate 41 and the back folding press members 42a and 42b. The control configuration is configured to execute the operation described in FIG. Further, the cover binding control unit 65e is supplied with a cooling time setting data 76f from the RAM 76 in order to cool the adhesive while the spine cover 41 is in contact with the back cover plate 41 after the cover binding process. As the cooling time setting data, one of a plurality of data is selected based on the above-described bundle configuration information of the intermediate paper sheets.

  The cutting process control unit 65f is a calculation unit that calculates a cutting amount (cutting amount) by the cutting blade 54, a speed setting unit that sets a cutting speed of the cutting blade 54, and a stroke that sets a moving stroke of the cutting blade 54. It consists of setting means. The cutting amount calculating means is configured to calculate the cutting amount from the middle sheet size, the cover sheet size, and the bundle thickness information detected by the bundle thickness detecting means St1. Further, the speed setting means is configured to set the cutting speed based on the bundle configuration information of the intermediate sheet. The moving stroke setting means is configured to set the cutting start position (standby position) of the cutting blade from the bundle thickness information.

  The stack control unit 65g is configured to control the paper discharge roller 55 described above and store the sheet bundle from the bookbinding path 5 in the storage stacker 57.

[Description of operation]
Next, the procedure of bookbinding operation in the apparatus of FIG. 1 will be described. The apparatus shown in the figure is configured to selectively execute the “bookbinding processing mode” and the “cutting processing mode” as described above. In the “bookbinding processing mode”, a sheet bundle that has not been subjected to binding processing is set on the intermediate paper tray 2, and an adhesive is applied to the sheet bundle to bind to the cover sheet for bookbinding processing. Then, three sheets of the sheet bundle after the bookbinding process are trimmed and cut and stored in the storage stacker 57. Further, in the “cutting processing mode”, a sheet bundle (booklet sheet) subjected to the back binding process is set on the tray 2, the booklet sheet is transferred to the cutting position Z without bookbinding, and trimming or cutting is performed at the cutting position Z. Cut and align one side of the top, ground, and forehead.

The operation of the “cutting processing mode” according to the present invention will be described.
"Sheet setting operation"
The bookbinding control unit 65 detects whether or not a sheet exists in the intermediate paper tray 2. The sheet sensor Se1 disposed in the intermediate paper tray 2 detects whether or not there is a sheet. The sheet sensor Se1 is in the “ON” state and waits for a sheet to be prepared on the tray. When it is “ON”, the process proceeds to the next step.

`` Bunch posture discrimination ''
Next, the bookbinding control unit 65 detects the back position of the sheet bundle set on the tray by the back detection means 70 and determines whether or not the posture is set in advance.
"Control during abnormal setting"
When the bookbinding control unit 65 determines that the set is not normal, the bookbinding control unit 65 displays a warning indicating that the set is not normal on the control panel and prompts the user to reset it.
“Exporting booklet sheets”
When the back position of the sheet bundle set on the tray is normal based on the above determination, the bookbinding control unit 65 carries out the booklet sheet on the tray 2 by the grip conveying means 10. For this reason, the illustrated apparatus lowers the tray 2 from the set position to the carry-out position (in the direction of arrow a in FIG. 1). After the tray is lowered, the grip conveying means 10 grips the sheet bundle on the tray with the fixed clamper 13b and the movable clamper 13a. At this time, the intermediate paper tray 2 is provided with a sheet feeding means (not shown) and pushes the sheet bundle along the tray 2 toward the grip conveying means. Then, the sheet bundle on the tray is carried out to the grip conveying means 10 on the downstream side.

"Sheet bundle thickness detection"
Therefore, the grip conveying means 10 to which the intermediate paper sheet is transferred as described above deflects the bundle posture simultaneously with “detecting the bundle thickness of the sheet bundle”. As described above, the grip conveying means 10 holds the sheet bundle between the fixed clamper 13b and the movable clamper 13a with a strong pressure. At this time, the movable clamper 13a is provided with a bundle thickness detecting sensor St1 and a grip end sensor Sg, and the bundle thickness detecting means St1 detects the thickness of the sheet bundle. This detected value is used to set control conditions such as a cutting blade standby position of the cutting means 50 described later.

`` Change bundle posture ''
Simultaneously with the detection of the bundle thickness, the bookbinding control unit 65 receives the grip completion signal from the grip end sensor Sg, and rotates the above-described turning motor Mb to turn the intermediate sheet approximately 90 degrees. Then, the intermediate paper sheet delivered from the intermediate paper tray 2 in a horizontal posture is deflected to a substantially vertical posture, and can be transferred along the bookbinding path 5 arranged in this direction.

"Cutting position set for booklet sheets"
Next, the bookbinding control unit 65 sends the booklet sheet to the folding roll 45 on the downstream side by the lifting motor Mc of the grip conveying means 10, and conveys and sets the booklet sheet to a predetermined cutting position Z with this folding roll (state shown in FIG. 9A). . At this time, the bookbinding control unit 65 is provided with a cutting amount calculation unit 76g, and sets the booklet sheet at the cutting position according to the cutting amount calculated by the calculation unit. The cutting amount calculation means 76g is configured to calculate the cutting amount from the booklet sheet size information and the finishing size information input from the control panel.

"Trimming cutting"
Next, the bookbinding control unit 65 trims and aligns the three sides except the back portion of the sheet bundle at the trimming position Z. This cutting alignment is performed in the order of top cutting, ground cutting, and fore edge cutting while deflecting the posture of the sheet bundle by the rotary tables 47a and 47b (state shown in FIG. 9B).

"Stacking operation"
When the above-described trimming and aligning process is completed, the bookbinding control unit 65 transfers the sheet bundle to the paper discharge roller 55 and stores it in the storage stacker 57.

  The bookbinding control unit 65 is configured to set the amount of movement of the cutting blade 54 by the cutting means 50 based on the detection information from the bundle thickness detection means St1.

  The case where the back detection means 69 is arranged on the middle paper tray 2 has been described above. In the present invention, the back detection means 69 is arranged on the rotary tables 47a and 47b of the bundle attitude deflection means 46, and the booklet sheet posture (back binding) is arranged. It is also possible to configure such that, for example, the top portion (or the ground portion or the fore edge portion) is set at the cutting position Z based on the detection result.

1 is an overall configuration diagram of a bookbinding apparatus according to the present invention. FIG. 2 is an enlarged explanatory view of a bookbinding processing unit in the apparatus of FIG. 1. Explanatory drawing which shows the structure of the bundle conveyance means in the apparatus of FIG. The whole explanatory drawing of the adhesive agent application means in the apparatus of FIG. FIG. 2 is an enlarged explanatory view of a cutting processing unit in the apparatus of FIG. 1. Explanatory drawing which shows one Embodiment (1st Embodiment) of the back part detection means in the apparatus of FIG. Explanatory drawing which shows embodiment (2nd Embodiment) of the back part detection means different from FIG. FIG. 3 is an explanatory diagram of a state in which a sheet bundle is set on a middle paper tray in the apparatus of FIG. 2, (a) is a state in which a sheet bundle is set on the tray, (b1), (b2), (c1), (c2) Indicates a state in which the seat posture is detected by the back detection means. 2A and 2B are explanatory diagrams of a cutting state of the apparatus of FIG. 1, in which FIG. 1A illustrates a state where a sheet bundle is set at a cutting position, and FIG. The block diagram which shows the structure of the control means (controller) in the apparatus of FIG.

Explanation of symbols

A Bookbinding apparatus X Glue application position Y Cover binding position Z Cutting position 2 Middle paper tray 3 Regulating member 4 Alignment means 4a, 4b Side guide 5 Bookbinding path 6 Paper feed path 7 Cover sheet feed path 10 Middle paper transport means 13a, 13b Clamper 20 Adhesive application means 21 Glue container 22 Application roll 30 Cover sheet conveyance means 31 Cover sheet tray 40 Cover sheet binding means 41 Back plate 42a, 42b Back folding press member 45 Folding roll 46 Bunch posture deflection means 50 Cutting means 54 Cutting blade 55 Ejection Paper roller 57 Storage stacker 68 Sheet orientation determination means 69 Back detection means 70 Metal detection sensor 85 Detection piece (85a, 85b)
86 Leaf spring 87 Flag (87a, 87b)
88 sensors (88a, 88b)
Ma tray elevating motor Mb turning motor Mc elevating motor Md grip motor Me drive motor (coating roll)
Mf drive motor (glue container)
Mg drive motor (drive roller)
Mh Cutter motor St1 Bundle thickness detection means Sg Grip end sensor

Claims (8)

A cutting device that cuts at least one side of the edge portion, the top portion, and the ground portion of the sheet bundle that is bound to the back portion,
Tray means for setting a bundle of sheets arranged in a bundle,
Cutting means disposed in the tray means or the downstream sheet bundle conveying path;
Control means for the cutting means;
A back detection means for detecting a back binding portion of the sheet bundle disposed in the tray means or the sheet bundle conveyance path;
With
The sheet bundle cutting apparatus, wherein the control means controls a sheet bundle cutting operation by the cutting means based on detection information from the back detection means. The back detection means is configured to detect whether or not the back binding portion of the sheet bundle set on the tray means is positioned at a predetermined position.
Whether the control means prohibits carrying out of the sheet bundle from the tray means when the back binding part of the sheet bundle set on the tray means is not in a predetermined position based on the detection information from the back detection means. Alternatively, a sheet bundle cutting apparatus that prohibits a sheet bundle cutting operation by the cutting unit. The control means includes display means for displaying a warning that the back binding portion of the sheet bundle set on the tray means is not in a predetermined position based on detection information from the back detection means. The sheet bundle cutting apparatus according to claim 2. The said back part detection means is comprised by metal detection sensors, such as a magnetic sensor and an ultrasonic sensor, which detect the presence or absence of the staple which binds the back edge of a sheet bundle. Sheet bundle cutting device. The back detection means is
A knife-shaped detection piece inserted between the leaves of the back edge of the sheet bundle,
An operating means for pressurizing the detection piece at a predetermined pressure;
The sheet bundle cutting device according to claim 1, further comprising position detection means for detecting a position of the detection piece. A cutting device that cuts at least one side of the edge portion, the top portion, and the ground portion of the sheet bundle that is bound to the back portion,
Tray means for setting a bundle of sheets arranged in a bundle,
A sheet bundle conveyance path for transferring the sheet bundle from the tray means to a predetermined cutting position;
A cutting means arranged at the cutting position for cutting at least one side of the sheet bundle;
A bundle posture deflecting unit that is disposed in the sheet bundle conveyance path and deflects the posture of the sheet bundle at the cutting position;
Control means for controlling the bundle posture deflection means and the cutting means;
A back detection means for detecting a back binding portion of the sheet bundle disposed in the tray means or the sheet bundle conveyance path;
With
The sheet bundle cutting apparatus, wherein the control means controls the bundle posture deflection means based on detection information from the back part detection means. The back detection means is disposed on the tray means so as to detect a back binding portion of the sheet bundle set on the tray means,
7. The control unit according to claim 6, wherein at least one side of a fore edge portion, a top portion, and a ground portion of the sheet bundle is positioned at a cutting position by the bundle posture deflection unit based on detection information from the back portion detection unit. The sheet bundle cutting apparatus according to the description. The back detection means is provided in the bundle posture deflection means,
The control means determines the back binding portion of the sheet bundle from the detection information from the back detection means,
7. The sheet bundle cutting apparatus according to claim 6, wherein at least one side of a small edge portion, a top portion, and a ground portion of the sheet bundle is positioned at a cutting position by the bundle posture deflecting unit based on the determination result.

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