JP2020079135A - Bookbinding device - Google Patents

Abstract

To provide a bookbinding device capable of preventing a sheet bundle from being defectively conveyed.SOLUTION: In a bookbinding device, a discharge part D includes a lifting tray 92 on which a sheet bundle Sa conveyed from bookbinding means is mounted to move the sheet bundle Sa along a conveying passage; the discharge part D is located at the downstream side of the conveying passage than the lifting tray 92 and has a sliding face 93a along the conveying passage, and has a slope 93 where the sheet bundle Sa mounted on the lifting tray 92 slides on the sliding face 93a when the lifting tray 92 moves from an abutting position D2; and the bookbinding device includes the discharge part D and a CPU for varying a moving speed of causing the lifting tray 92 to move the sheet bundle Sa.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a bookbinding device that bundles sheets into a book.

  2. Description of the Related Art In recent years, in a bookbinding device, bookbinding is performed by stacking a plurality of sheets into a bundle, adhering a cover sheet, cutting the edges, and cutting the sheets into a predetermined size. In such a bookbinding apparatus, a configuration has been proposed in which, when a bound sheet bundle is stored in a storage portion, the sheet bundle is conveyed and stored in a substantially constant posture (see Patent Document 1).

JP, 2005-305822, A

  In the bookbinding apparatus described in Patent Document 1, a booklet-made sheet bundle is configured to be conveyed to a storage unit while sliding inside the apparatus while being in a posture in which it is erected in a substantially vertical direction. In the bookbinding device, when binding a sheet bundle, the friction resistance at the time of sliding differs depending on the type of the cover sheet, and even when the sheet bundle is not wrapped around the cover sheet, the adhesive causes the sliding The resistance increases. Therefore, as in the configuration described in Patent Document 1, in a configuration in which the bound sheet bundle is transported at a constant speed regardless of the state of the bound sheet bundle, there is a possibility that a defective binding of the bound sheet bundle may occur.

  Therefore, an object of the present invention is to provide a bookbinding device that can prevent defective conveyance of a sheet bundle.

  A bookbinding apparatus according to the present invention includes a bookbinding unit for stacking a plurality of sheets into a bundle to form a sheet bundle, and bookbinding the sheet bundle, and a placement section on which the bookbound sheet bundle is placed. A sheet bundle conveyed from the bookbinding means is placed on the sheet bundle, and the sheet bundle is moved along the conveyance path from the bookbinding means to the placing section; When the moving unit is located on the downstream side and has a sliding surface along the conveyance path, and the moving unit moves from a predetermined position, the sheet bundle placed on the moving unit moves the sliding surface. A transporting unit configured to transport the sheet bundle along the transport path, and a control unit configured to vary a moving speed at which the moving unit moves the sheet bundle, It is characterized by

  According to the present invention, it is possible to prevent the conveyance failure of the sheet bundle.

1 is a schematic view showing an image forming apparatus according to an embodiment of the present invention. The schematic diagram showing the bookbinding device of an embodiment of the present invention. (A) is a figure which shows the case where the cutting part of embodiment of this invention cuts the top part of a sheet bundle, (b) is a figure which shows the case where a cutting part cuts the base part of a sheet bundle, (C) is a figure which shows the case where a cutting part cuts the edge part of a sheet bundle. (A)-(e) is a figure which shows the case where the discharge part of embodiment of this invention discharges a sheet bundle. The control block diagram of the bookbinding device of the embodiment of the present invention. 9 is a flowchart showing a process executed when the discharging unit according to the embodiment of the present invention discharges a sheet bundle. FIG. 6 is a diagram showing a relationship between a moving speed of the sheet bundle and a distance over which the sheet bundle slides in the discharging unit according to the embodiment of the present invention.

  An image forming apparatus including a bookbinding apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a cross-sectional view showing a bookbinding system 1 including an image forming apparatus A, a bookbinding apparatus B, and a post-processing apparatus C according to an embodiment of the present invention. 2 is a cross-sectional view showing the bookbinding apparatus B. As shown in FIG. 1, the image forming apparatus A forms an image on the sheet S by an image forming method such as electrostatic printing, ink jet printing, offset printing, and carries out the image from the sheet discharge port 14. The bookbinding apparatus B is continuously provided to the sheet discharge port 14 of the image forming apparatus A, accumulates the image-formed sheets S in a bundle to form a sheet bundle, and binds the sheet bundle. The post-processing device C has a discharge tray 35b, receives a plurality of sheets S to which images have been transferred from the image forming device A via the bookbinding device B, forms a sheet bundle, and performs a stapling process (binding process) or the like. Post-processing is performed. The image forming apparatus A and the bookbinding apparatus B can also be used independently.

  The image forming apparatus A has a sheet feeding unit 2, an image forming unit 3, a sheet discharging unit 4, and a control unit built in the apparatus body 1. A scanner unit 20 is provided on the top of the apparatus body 1.

  The scanner unit 20 includes a platen 19 on which a document is placed to optically read the image of the document, a carriage 21 that scans the image of the document along the platen 19, and an optical device that photoelectrically converts an optical image from the carriage 21. And a reading unit 22. The optical reading unit 22 is composed of, for example, a CCD device, and transmits information obtained by optically converting an optical image to the image forming unit 3 as a digital signal. In the illustrated example, a document feeder (ADF) 23 that automatically feeds a document to the platen 19 is arranged on the platen 19.

  The sheet feeding unit 2 is provided with a plurality of cassettes 5 according to the sheet size, and the sheet S of the size instructed by the control unit is fed to the sheet feeding path 6. A registration roller 7 is provided in the paper feeding path 6, and the sheet S is fed to the image forming unit 3 on the downstream side at a predetermined timing after the leading edge of the sheet S is aligned.

  The image forming unit 3 is provided with a light irradiation unit 9, a photosensitive drum 10, a developing device 11, and a transfer unit 12. In the image forming section 3, the surface of the photoconductor drum 10 is irradiated with laser light from the light irradiation means 9 based on the digital signal transmitted from the scanner unit 20, and the surface of the photoconductor drum 10 is electrostatically latent corresponding to the original. An image is formed. Subsequently, in the image forming unit 3, the photoconductor drum 10 rotates to supply toner from the developing device 11 to the electrostatic latent image on the photoconductor drum 10, so that the electrostatic latent image is visualized as a toner image. Then, in the image forming unit 3, the toner image supplied to the photosensitive drum 10 is transferred to the sheet S sent to the transfer unit 12 at a predetermined timing.

  The sheets S to which the images are transferred are fed to the transfer unit 12 one by one from the paper feeding unit 2. Further, the image forming apparatus A is configured to be able to transfer an image to an arbitrary paper type such as plain paper or OHP sheet S as a type of the sheet S to which the image is transferred. Further, the image forming apparatus A is configured so that the sheet S can be fed from the multi-tray 2a provided in the apparatus main body 1.

  The sheet S on which the toner image is transferred by the transfer unit 12 is conveyed to the fixing device 13, and the toner image is fixed by applying heat and pressure. The sheet S having the toner image fixed by the fixing device 13 is conveyed to the paper discharge unit 4. The sheet discharge unit 4 includes a sheet discharge port 14 that discharges the sheet S from the apparatus main body 1, and a sheet discharge roller 15 that conveys the sheet S from the fixing device 13 to the sheet discharge port 14 through a sheet discharge path 17. It is provided.

  In the image forming apparatus A, when the control unit instructs the one-sided mode for printing on one side of the sheet S, the sheet S passing through the fixing device 13 passes through the sheet discharge path 17 through the sheet discharge port 14. It is conveyed to the bookbinding apparatus B. Further, in the image forming apparatus A, when the control unit instructs the duplex mode for printing on both sides of the sheet S, the sheet S that has passed through the fixing device 13 is turned upside down by switchback, and the sheet discharge path 17 is provided. Is conveyed to the re-conveyance path 16 and is conveyed again to the image forming unit 3. Then, in the image forming apparatus A, an image is also formed on the back surface of the sheet S, and then the sheet S is conveyed from the sheet discharge path 17 to the bookbinding apparatus B through the sheet discharge port 14.

  It should be noted that the image forming apparatus A sends a sheet to the bookbinding apparatus B from the control unit in order to execute switching of the transport path of the sheet S in the bookbinding apparatus B before sending the sheet S to the bookbinding apparatus B. It is configured to be able to transmit signals such as size/paper type. Further, the image forming apparatus A has, in addition to a normal discharge mode for discharging the sheet S to the outside of the bookbinding apparatus B, an adhesive bookbinding mode for bonding one end surface of the sheet bundle Sa by an adhesive applying section 52 described later, and a sheet bundle. It is possible to select a cutting mode capable of cutting in three directions other than the bonding surface of Sa.

  The bookbinding apparatus B includes a transport alignment unit 37 that transports and aligns the sheets S, an adhesive application unit 52 that applies adhesive to the aligned sheet bundle Sa that is configured in a bundle, and a cutting unit that cuts the sheet bundle Sa. A section 80 and a discharge section D that discharges the bound sheet bundle Sa are provided.

  The apparatus body 29 of the bookbinding apparatus B is provided with a carry-in port 30 that is continuous with the paper discharge port 14 of the image forming apparatus A. The sheet S on which the image is formed in the image forming apparatus A is conveyed from the carry-in port 30 to the first conveying path 31 in the bookbinding apparatus B. The bookbinding apparatus B detects that the sheet S has been conveyed from the carry-in port 30 to the first conveyance path 31 by the sheet sensor Se1. The first transport path 31 includes a second transport path 32 through which the sheets S (middle paper) aligned in a bundle are transported, a third transport path 34 through which the sheet S serving as the cover sheet of the sheet bundle Sa is transported, The sheet S is conveyed by the pair of conveying rollers 31a. The sheet S is provided at a position where the first transport path 31 branches into the second transport path 32 and the third transport path 34, and is moved from the first transport path 31 to the second transport path 31 by a path switching flapper 36 for switching the transport paths. It is transported to the transport path 32 or the third transport path 34.

  When the normal discharge mode is selected in the image forming apparatus A, the sheet S is guided from the first transport path 31 to the third transport path 34 by the path switching flapper 36, and the post-processing apparatus C is transported by the plurality of transport roller pairs 34a. Be transported to. When the sheet S is conveyed to the post-processing apparatus C, the sheet S is conveyed to the post-processing path 35, and post-processing such as stapling is performed in accordance with an instruction from the image forming apparatus A, and then the sheet S is discharged by the conveyance roller pair 35a. It is discharged to 35b.

  On the other hand, when the bookbinding mode is selected in the image forming apparatus A, the sheet S is guided from the first conveyance path 31 to the second conveyance path 32 by the path switching flapper 36, and the sheet discharge port 33 is formed by the plurality of conveyance roller pairs 32a. Is transported to the transport matching unit 37. The bookbinding apparatus B detects that the sheet S is conveyed to the second conveyance path 32 by the sheet sensor Se2.

  In the transport alignment unit 37, the sheet S discharged from the sheet discharge port 33 is guided by the carry-in guide 40 toward the stacking tray 38 and is stored in the stacking tray 38 by the forward/reverse rotation roller 39, so that the sheet S is stacked by the stacking tray 38. S is stacked and stored in a bundle. The stacking tray 38 is configured so that the sheets S can be stacked in a tilted state.

  The forward/reverse rotation roller 39 rotates forward to transfer the sheet S to the leading end side (left end side in the drawing) of the stacking tray 38, and reversely rotates to transfer to the rear end side (right end in the drawing) of the stacking tray 38. To do. When the sheet S is transferred to the rear end side of the stacking tray 38, the sheet S comes into contact with the regulating member 41 provided on the rear end side of the stacking tray 38, and the position on the transfer direction side is aligned. Further, the sheets S stacked on the stacking tray 38 are aligned by aligning both ends of the sheets S orthogonal to the transport direction to predetermined reference positions by sheet side aligning means (not shown). As a result, the sheets S are sequentially stacked on the stacking tray 38 and aligned in a bundle.

  A sheet bundle thickness identification means (not shown) is arranged on the stacking tray 38, and the thickness of the sheet stack Sa stacked on the stacking tray 38 can be detected. The sheet bundle thickness identification means may be composed of, for example, a member that contacts the uppermost sheet S on the stacking tray 38 and a sensor that detects the position of the member. Further, the sheet bundle thickness identifying means has a paper discharge sensor Se3 that detects the sheets S discharged from the paper discharge port 33 and a counter that counts the signals from the paper discharge sensor Se3, and the total number of the counted sheets S. It may be configured to calculate by multiplying by the average paper thickness.

  The stacking tray 38 is moved to the second position P2 after being moved from the initial position to the first position P1 located below while maintaining the inclined posture by a moving mechanism (not shown). The second position P2 is provided with a sheet bundle conveying unit 43 that holds the end portion of the sheet bundle Sa stacked on the stacking tray 38 and conveys the sheet bundle Sa to the bookbinding path 42. The sheet bundle conveying means 43 turns the held sheet bundle Sa in the direction of an arrow r in the drawing to direct (stand up) in a substantially vertical direction, and is positioned downstream of the bookbinding path 42 while maintaining its posture. It is conveyed to the adhesive application section 52. At this time, the sheet bundle Sa is conveyed in a direction in which the edge to which the adhesive is applied in the adhesive application section 52 is the lower end.

  The sheet bundle conveying means 43 is configured to be movable between the second position P2 and a position where the sheet bundle Sa is delivered to the cutting unit 80. In addition, the sheet bundle conveying means 43 moves the grip portion that holds the sheet bundle Sa between a closed position where the sheet bundle Sa is sandwiched from both sides in the thickness direction and an open position where the sheet bundle Sa is released. It is configured to be possible.

  The bookbinding path 42 is arranged in a direction that vertically cuts the bookbinding apparatus B in a substantially vertical direction. Further, the third transport path 34 is arranged in a direction that traverses the bookbinding apparatus B in a substantially horizontal direction. Further, in the bookbinding apparatus B, a cover sheet binding section 58, which will be described later, is arranged at an intersection where the bookbinding path 42 and the third conveyance path 34 intersect (orthogonal) with each other.

  The sheet S is fed from the image forming apparatus A to the first transport path 31 in the bookbinding apparatus B configured as described above. Here, the sheet S conveyed from the image forming apparatus A includes a sheet which is a middle sheet on which content information (document data) is printed and a sheet which is used as a cover cover and on which a title or the like is printed to be a cover sheet. The bookbinding apparatus B sorts the conveyance path according to the type of the sheet, conveys the sheet S as the inner sheet to the second conveyance path 32, and conveys the sheet S as the cover sheet to the third conveyance path 34.

  An inserter device 25 that feeds the sheets S one by one without passing through the image forming apparatus A is connected to the first transport path 31. The inserter device 25 separates the sheets S, which are stacked on the paper feed tray 26 of the inserter device 25 and serve as a cover sheet which is not subjected to the printing process in the image forming apparatus A, one by one, and the sheet S and the path switching piece 28 are used. And is supplied to the first transport path 31. The paper feed tray 26 may be composed of a plurality of stages instead of one stage.

  The bookbinding apparatus B uses either glue binding (for example, glue) to bind and stack the sheet bundle Sa that has been collated and stacked, or case binding for binding the sheet bundle Sa to the cover sheet S. A bookbinding process for bookbinding is executed.

  The case of executing case binding will be described below as an example. In the bookbinding path 42 of the bookbinding apparatus B, an adhesive application section 52 is arranged at the application position Px for applying the adhesive to the sheet bundle Sa. Further, a cover sheet binding portion 58 is arranged at the cover sheet binding position Py on the downstream side of the application position Px in the bookbinding route 42 from the application position Px. Then, a cutting unit 80 is arranged at a cutting position Pz on the downstream side of the cover binding position Py in the bookbinding path 42 from the conveyance path.

  The adhesive application unit 52 rotatably supports the application roller 53 and the application roller 53 that apply the adhesive to the spine of the sheet bundle Sa supported by the sheet bundle conveying unit 43, stores the adhesive, and binds the bookbinding device. The coating unit 55 includes a container 54 that can reciprocate in the front-back direction of B.

  The coating roller 53 is made of, for example, heat resistant rubber, is rotatably supported by a container 54 containing an adhesive, and is connected to a coating motor Mr. The application roller 53 is rotationally driven by the application motor Mr and applies the adhesive agent held on the surface to the edge of the sheet bundle Sa.

  The container 54 is made of, for example, aluminum, accommodates an adhesive, and is open upward. The container 54 is supported by a guide rail 56 extending in the front-rear direction of the bookbinding apparatus B, and is configured to be reciprocally movable in the front-rear direction. A timing belt (not shown) is stretched around the container 54, and the timing belt is driven by the drive motor Md to reciprocate with a predetermined stroke.

  Within the range in which the container 54 reciprocates, a coating region for performing a coating process for coating an adhesive on the sheet bundle Sa, a standby position for retracting from the bookbinding path 42 and waiting for a coating process, and replenishment of the adhesive. And a refill position to receive. By moving the container 54, the coating unit 55 can reciprocate in the front-back direction inside the bookbinding apparatus B together with the coating roller 53.

  When applying the adhesive to the sheet bundle Sa, the adhesive application unit 52 first adjusts the interval between the edge of the sheet bundle Sa and the application roller 53 according to the thickness of the sheet bundle Sa. Next, after the sheet bundle Sa is positioned at the application position Px, the adhesive application section 52 starts moving the application unit 55 located at the standby position and moves it to a predetermined starting point position in the application area. Next, the adhesive application section 52 moves the application unit 55 from the predetermined starting position to the predetermined folding position in a state where the adhesive roller 53 is rotated in the forward direction and is in contact with the edge of the sheet bundle Sa. By moving the coating unit 55 from the predetermined starting position to the predetermined folding position, the adhesive is evenly distributed on the edge of the sheet bundle Sa by the coating roller 53 having the adhesive in the container 54 on its surface. Is applied.

  The adhesive application unit 52 stops the forward rotation of the application roller 53 and stops the movement of the application unit 55 after the application unit 55 reaches a predetermined folding position. Next, the adhesive application section 52 starts the reverse rotation of the application roller 53, and starts moving the application unit 55 from the predetermined folding position to the predetermined starting position. Then, after the coating unit 55 reaches the predetermined starting position, the adhesive coating unit 52 stops the reverse rotation of the coating roller 53 and stops the movement of the coating unit 55.

  The adhesive application unit 52 executes, as an application process for applying an adhesive to the edge of the sheet bundle Sa, for example, a process of moving the application unit 55 so as to execute a series of reciprocating movements of the application unit 55 twice. The adhesive application unit 52 may be configured to perform a series of reciprocating movements of the application unit 55 once as an application process, or may be configured to perform three or more times. .

  After finishing the coating process, the adhesive coating section 52 moves the coating unit 55 from the coating area to the standby position or the replenishment position. By retracting the coating unit 55 from the bookbinding path 42, the sheet bundle Sa is conveyed to the cover sheet binding position Py through the bookbinding path 42, and the cover sheet binding section 58 adheres the sheet S serving as the cover sheet.

  The cover sheet binding portion 58 is a backing plate 59 that can be retracted from the bookbinding path 42 by sliding, a spine folding plate 60 that spins the cover sheet S by pressing the cover sheet S, and a sheet. And a folding roll 61 for narrowing the bundle Sa to finish the folding.

  The cover sheet S is conveyed to the cover sheet binding portion 58 by the time the sheet bundle Sa having the edge coated with the adhesive is conveyed to the cover sheet binding position Py. The cover sheet binding unit 58 positions the sheet S, which is the cover sheet conveyed from the third conveying path 34, at a predetermined position. After the sheet S to be the cover sheet is positioned at a predetermined position, the sheet bundle Sa is conveyed from the bookbinding path 42 in the cover sheet binding section 58, and the edge of the sheet bundle Sa is pressed against the sheet S to be the cover sheet. Next, in the cover sheet binding section 58, the sheet bundle Sa is conveyed vertically downward in the bookbinding path 42, and is pressed against the backrest plate 59 via the sheet S which is the cover sheet. In this state, in the cover sheet binding portion 58, the sheet bundle Sa is pressed by the spine folding plate 60 from the right side and the left side in the drawing, and a fold corresponding to the thickness of the sheet bundle Sa is formed on the sheet S as the cover sheet. .. Then, in the cover sheet binding section 58, the folding rolls 61 squeeze the sheet bundle Sa from the right and left sides in the drawing, and the process of binding the sheet S serving as the cover sheet to the sheet bundle Sa is completed.

  The cover sheet binding unit 58 slides the backrest plate 59 and retracts it from the bookbinding path 42 after binding the sheets S to be the cover sheets to the sheet bundle Sa. By retracting the backrest plate 59 from the bookbinding path 42, the sheet bundle Sa is conveyed to the cutting position Pz through the bookbinding path 42 and is conveyed to the cutting unit 80. The bookbinding apparatus B detects by the sheet sensor Se4 that the sheet bundle Sa has started to be conveyed from the cover sheet binding position Py to the cutting position Pz through the bookbinding path.

  The cutting unit 80 includes a bundle posture changing unit 62 and a cutting unit 70. The bundle posture changing unit 62 can move up and down in the vertical direction of the bookbinding apparatus B, and a first grip rotating member 62a and a second grip rotating member 62b that rotate by gripping a sheet bundle Sa to which a sheet S that is a cover sheet is adhered. And a unit frame 62x provided in the. The first and second grip rotation members 62a and 62b are rotatably supported by the unit frame 62x. The second grip rotation member 62b is movably supported to the right and left in the drawing, which is the thickness direction of the sheet bundle Sa.

  Power for changing the posture of the sheet bundle Sa is supplied to the first and second grip rotation members 62a and 62b from the turning motors Mt1 and Mt2, respectively. Further, the second grip rotating member 62b is supplied with power that moves to the right and left in the drawing from the grip motor Mg.

  The bundle posture changing unit 62 has a grip sensor (not shown) that detects whether the sheet bundle Sa is reliably gripped between the first and second grip rotation members 62a and 62b. After the grip sensor detects that the sheet bundle Sa is gripped, the first and second grip rotation members 62a and 62b are driven to rotate to change the posture of the sheet bundle Sa. When the first and second grip rotation members 62a and 62b are driven to rotate, the cutting unit 80 changes the posture of the sheet bundle Sa, and the top portion Sab, the ground portion Sac, and the edge portion Sad of the sheet bundle Sa (all are (See FIG. 3), each of them can be directed downward in the vertical direction.

  Here, the top portion Sab of the sheet bundle Sa is a surface on the front side of the bookbinding apparatus B when the sheet S serving as the cover sheet is adhered to the back portion Saa of the edge. The base portion Sac of the sheet bundle Sa is a surface facing the top portion Sab. The fore edge portion Sad of the sheet bundle Sa is a surface facing the back portion Saa.

  Power that moves in the vertical direction is supplied to the unit frame 62x from the lifting motor Ma. The cutting unit 80 sets the cutting width (cut amount) for the sheet bundle Sa set at the cutting position Pz by the movement amount of the unit frame 62x.

  The cutting unit 70 includes a cutting edge press portion 67 that is an edge on the lower side in the vertical direction of the sheet bundle Sa and that suppresses an edge to be cut (cutting edge), and a cutting blade unit 68. The cutting edge pressing unit 67 includes a blade receiving member 64 fixed to the cutting unit 80, a pressing member 65 that presses the sheet bundle Sa against the blade receiving member 64, and a biasing unit (not shown) that biases the pressing member 65. ,have. The blade receiving member 64 is made of a soft rubber material or a resin material (a polypropylene resin is shown). The pressing member 65 is composed of a pressing mechanism that presses and holds the cutting edge of the sheet bundle Sa against the blade receiving member 64. The biasing means is composed of, for example, a spring.

  The cutting blade unit 68 includes a flat blade-shaped cutting blade 68a and a cutter motor Mc that drives the cutting blade 68a. The cutting blade 68a is a flat blade edge and has a blade width longer than the width of the sheet S. The cutting blade 68a is supported reciprocally between a standby position separated from the blade receiving member 64 on the right side of the bookbinding path 42 in the drawing, and a cutting position in contact with the blade receiving member 64.

  A case where the cutting unit 80 cuts each of the top portion Sab, the base portion Sac, and the edge portion Sad of the sheet bundle Sa will be described with reference to FIGS. FIG. 3A is a diagram showing a case where the top portion Sab of the sheet bundle Sa is cut. When the cutting portion 80 cuts the top portion Sab of the sheet bundle Sa, the bundle posture changing unit 62 changes the posture of the top portion Sab of the sheet bundle Sa to the lower side in the vertical direction, and the position corresponding to the predetermined cut amount. The sheet bundle Sa is set in. Then, the cutting unit 80 presses the top portion Sab of the sheet bundle Sa against the blade receiving member and moves the cutting blade 68a to the position where the cutting blade 68a abuts on the blade receiving member 64, so that the top portion Sab of the sheet bundle Sa is moved to a predetermined position. Cut according to the cut amount.

  FIG. 3B is a diagram showing a case where the base portion Sac of the sheet bundle Sa is cut. When the cutting unit 80 cuts the base portion Sac of the sheet bundle Sa, the bundle posture changing unit 62 changes the posture of the base portion Sac of the sheet bundle Sa to the vertically lower side, and the position corresponding to the predetermined cut amount. The sheet bundle Sa is set in. Then, the cutting unit 80 presses the ground portion Sac of the sheet bundle Sa against the blade receiving member and moves the cutting blade 68a to the position where the cutting blade 68a contacts the blade receiving member 64, so that the ground portion Sac of the sheet bundle Sa is moved to a predetermined position. Cut according to the cut amount.

  FIG. 3C is a diagram showing a case where the fore edge portion Sad of the sheet bundle Sa is cut. When the cutting unit 80 cuts the fore edge portion Sad of the sheet bundle Sa, the bundle posture changing unit 62 changes the fore edge portion Sad of the sheet bundle Sa to the vertical lower side, and the position corresponding to the predetermined cut amount. The sheet bundle Sa is set in. Then, the cutting unit 80 presses the fore edge portion Sad of the sheet bundle Sa against the blade receiving member and moves the cutting blade 68a to a position where the cutting blade 68a comes into contact with the blade receiving member 64, so that the fore edge portion Sad of the sheet bundle Sa is predetermined. Cut according to the cut amount.

  The cutting unit 80 moves the cutting blade 68a in the direction away from the blade receiving member 64 based on the thickness of the sheet bundle Sa when cutting any one of the top Sab, the ground Sac, and the edge Sad. A gap required for rotation and movement of the sheet bundle Sa is formed. Then, after the cutting unit 80 finishes cutting all the sheets into the sheet bundle Sa, the bundle posture changing unit 62 changes the posture of the back portion Saa to the vertically downward direction, and the discharging roller 72 conveys the sheet toward the discharging portion D. To do.

  The discharge unit D constitutes a transport unit that transports the sheet bundle Sa transported from the bookbinding route 42 along a transport route 91 from the cutting unit 80 to the stacking tray 96 (see FIG. 1). The discharge unit D is located on the downstream side of the transport path 91 with respect to the lift tray 92 as a moving unit that can move vertically in the vertical direction along the transport path 91, and slides along the transport path 91. And a slope 93 as a sliding portion having a surface 93a. In addition, the discharge unit D is brought into contact with the sheet bundle Sa that has slid on the sliding surface 93a, is rotated along the conveyance path 91, and is rotated by the rotation unit 94 that conveys the sheet bundle Sa. And a conveyor 95 that is a belt conveyor that conveys the sheet bundle Sa to the outside of the bookbinding apparatus B. The discharge unit D has a stacking tray 96 as a stacking unit on which the sheet bundle Sa that is transported from the transport conveyor 95 and transported to the outside of the bookbinding apparatus B is placed. That is, the transport path 91 is a path through which the sheet bundle Sa from the bookbinding unit including the transport alignment unit 37, the adhesive application unit 52, and the cutting unit 80 to the stacking unit is transported.

  FIG. 4 is a diagram for explaining the movement of the sheet bundle Sa conveyed to the discharge section D. As illustrated in FIG. 4A, the stack of sheets Sa conveyed from the cutting unit 80 is placed on the elevating tray 92 at the placing position D<b>1 which is the upstream position of the conveying path 91. As shown in FIG. 4B, when the sheet bundle Sa is placed, the elevating tray 92 moves vertically downward along the transport path 91. At this time, the elevating tray 92 changes the moving speed for moving the sheet bundle Sa by changing the moving speed in the vertical direction according to the sheet bundle Sa.

  As shown in FIG. 4C, the elevating tray 92 moves to a contact position D2, which is a predetermined position vertically below the sliding surface 93a of the slope 93 in the transport path 91, and thus the discharging portion D. Then, the sheet bundle Sa is placed on the slope 93. Then, the elevating tray 92 moves to the standby position D3 which is vertically below the contact position D2, and then stops.

  As shown in FIG. 4( d ), the slope 93 has a sliding surface 93 a that is inclined along the transport path 91, and serves as the cover sheet of the sheet bundle Sa received and placed from the elevating tray 92. Slides on the sliding surface 93a. The sheet bundle Sa slides on the sliding surface 93a and is conveyed to the rotating unit 94.

  As shown in FIG. 4( e ), the rotating unit 94 has the first position D<b>4 that can contact the back portion Saa of the sheet bundle Sa conveyed from the slope 93, and the contacted sheet bundle Sa to the conveyor 95. The second position D5 to be placed and the second position D5 are rotatable. The transport conveyor 95 transports the sheet bundle Sa placed from the rotating unit 94 toward the stacking tray 96 (see FIG. 1).

  FIG. 5 is a control block diagram in the bookbinding apparatus B of this embodiment. The bookbinding apparatus B is controlled by a bookbinding apparatus control unit 100B including a CPU (Central Processing Unit) 101 as a control unit. The bookbinding device control unit 100B includes a ROM (Read Only Memory) 102 and a RAM (Random Access Memory) 103. The CPU 101 controls each unit while reading a program corresponding to the control procedure stored in the ROM 102. Further, work data and input data are stored in the RAM 103, and the CPU 101 controls by referring to the data stored in the RAM based on the above-mentioned program or the like.

  In the bookbinding device control unit 100B, based on a command from the engine control unit 100A that controls the image forming device A and a signal from a sensor output unit 111 that outputs a signal related to detection by various sensors provided in the bookbinding device B. , CPU 101 executes control related to bookbinding. The CPU 101 controls the adhesive application drive unit 112 that controls the adhesive application unit 52, the bookbinding drive unit 113 that controls the cover binding unit 58, the cutting drive unit 114 that controls the cutting unit 80, and the discharge unit D. A control command is transmitted to the ejection drive unit 115.

  FIG. 6 is a flowchart regarding the operation of the discharge unit D when the sheet bundle Sa is conveyed to the discharge unit D, which is executed by the CPU 101 of the present embodiment.

  First, the CPU 101 determines whether or not the sheet bundle Sa conveyed to the discharge section D is a binding booklet (S1). In general, the sheet bundle Sa that has been bound with the glue tends to have a large frictional resistance with the sliding surface 93a of the slope 93 shown in FIG. Therefore, the CPU 101 determines in step S1 whether or not the cover sheet S is adhered to the sheet bundle Sa.

  In the process of step S1, when it is determined that the sheet bundle Sa is case binding instead of glue binding (No), the CPU 101 determines that the cover sheet S is a paper type having low friction resistance with the sliding surface 93a. It is determined whether or not (S2). In this process, the CPU 101 reads, from the ROM 102, data relating to the frictional resistance of each cover sheet type when the sheet bundle Sa to which the cover sheet S is adhered slides on the sliding surface 93a. Then, the CPU 101 determines whether or not the friction resistance of the sheet S, which is the cover sheet of the sheet bundle Sa conveyed to the discharge portion D, is lower than a predetermined threshold value.

  In the processing of step S2, when it is determined that the cover sheet S is a paper type having low frictional resistance (Yes), the CPU 101 determines the moving speed of the sheet bundle Sa when the sheet bundle Sa is conveyed by the elevating tray 92. The speed is set in the low speed mode (S3). On the other hand, if it is determined in step S2 that the cover sheet S is a paper type having high frictional resistance (No), or if it is determined in step S1 that the binding is binding (Yes), the CPU 101 Sets the speed in the high speed mode (S4).

  Details of the low speed mode and the high speed mode will be described with reference to FIG. 7. FIG. 7 is a diagram showing the relationship between the moving speed of the sheet bundle Sa and the distance of sliding on the sliding surface 93a of the slope 93 in each mode. As shown in FIG. 7, in the low speed mode M1, the moving speed of the sheet bundle Sa is such that the moving speed becomes the speed V1a at the time when the distance sliding on the sliding surface 93a is the distance L1. Is controlled. In the low speed mode M1, the moving speed of the sheet bundle Sa is the speed V1b when the distance sliding on the sliding surface 93a is the distance L2, and the distance L3 is the moving speed sliding on the sliding surface 93a. The elevating tray 92 is controlled so that the moving speed becomes the speed V1c at the point of time. In the low speed mode M1, the elevating tray 92 is controlled so that the moving speed of the sheet bundle Sa becomes the speed V1d even when the distance L4 is reached.

  On the other hand, in the high speed mode M2, the moving speed of the sheet bundle Sa is such that the moving speed becomes the speed V2a higher than the speed V1c at the time when the distance to slide on the sliding surface 93a is the distance L1. 92 is controlled. Further, in the high speed mode M2, the moving speed of the sheet bundle Sa is such that the moving speed is the speed V2b and the distance sliding on the sliding surface 93a is the distance L3 when the distance sliding on the sliding surface 93a is the distance L2. The elevating tray 92 is controlled so that the moving speed becomes the speed V2c at the time point. Then, in the high speed mode M2, the elevating tray 92 is controlled so that the moving speed of the sheet bundle Sa becomes the speed V2d when the distance L4 is reached.

  Here, when the moving speed is set higher than the relationship between the distance and the moving speed in the low speed mode M1 shown in FIG. 7, even though the friction resistance of the sheet S serving as the cover sheet of the sheet bundle Sa is low. The frictional resistance at the time of sliding on the sliding surface 93a acts strongly on the sheet S which is the cover sheet. In such a case, the sheet S that is the cover sheet of the sheet bundle Sa may be worn.

  In addition, even if the friction resistance of the sheet S that is the cover of the sheet bundle Sa is high, when the moving speed is set to be lower than the relationship between the distance and the moving speed in the high speed mode M2 shown in FIG. The sheet bundle Sa may not slide on the sliding surface 93a, resulting in poor conveyance.

  From these, the elevating tray 92 is controlled by the CPU 101 when the frictional resistance between the sheet S on the surface of the sheet bundle Sa and the sliding surface 93a is less than the threshold which is the first resistance. The moving speed of the bundle Sa is determined to be the first speed that is the low speed mode M1. Further, the elevating tray 92 is controlled by the CPU 101 when the frictional resistance between the sheet S on the surface of the sheet bundle Sa and the sliding surface 93a is a frictional resistance equal to or more than a threshold value that is the second resistance. The moving speed of Sa is determined to be the second speed that is the high speed mode M2.

  In this way, by controlling the elevating tray 92 and setting the moving speed of the sheet bundle Sa, the bookbinding apparatus B of the present embodiment may cause excessive wear of the sheets S of the sheet bundle Sa that contact the sliding surface 93a. Can be prevented. Further, the bookbinding apparatus B can reliably convey the sheet bundle Sa to the rotating portion 94, and can prevent the conveyance failure from occurring.

  After executing the processing of step S3 or step S4, the CPU 101 rotates the rotating portion 94 from the first position D4 to the second position D5 after the sheet bundle Sa contacts the rotating portion 94 (S5). ). Then, the CPU 101 causes the transport conveyor 95 to transport the sheet bundle Sa placed on the transport conveyor 95 by the rotation of the rotating unit 94 (S6).

  As described above, in the bookbinding apparatus B of the present embodiment, the speed at which the elevating tray 92 moves the sheet bundle Sa is changed, so that excessive wear occurs on the sheet S of the sheet bundle Sa that is in contact with the sliding surface 93a. Can be prevented. Further, the bookbinding apparatus B can reliably convey the sheet bundle Sa to the rotating portion 94, and can prevent the conveyance failure from occurring.

  Further, the bookbinding apparatus B of the present embodiment does not bond the case binding as the first mode in which the cover sheet S is adhered by the adhesive applied to the sheet bundle Sa and the cover sheet S to the sheet bundle Sa. The second mode is binding with the glue. In such a configuration, the elevating tray 92 is configured to determine the moving speed of the sheet bundle Sa according to the paper type of the sheet S that is the cover sheet of the sheet bundle Sa under the control of the CPU 101 in case binding. Has been done. Then, the elevating tray 92 is configured to determine the moving speed of the sheet bundle Sa to the high speed mode M2 as a predetermined speed under the control of the CPU 101 in the case of the staple binding.

  For this reason, the bookbinding apparatus B of the present embodiment determines the speed of the sheet bundle Sa to the high speed mode M2 regardless of the paper type of the sheets S forming the sheet bundle Sa in the case of the glue binding. The control processing in the case of glue binding can be simplified.

  In the present embodiment, the elevating tray 92 is configured to be set to the low speed mode M1 and the high speed mode M2 under the control of the CPU 101, but the present invention is not limited to this. The elevating tray 92 may be configured such that the CPU 101 calculates and sets the speed in accordance with the frictional resistance of the sheet S on the surface of the sheet bundle Sa that contacts the sliding surface 93a of the slope 93, for example. Further, in the elevating tray 92, the moving speed of the sheet bundle Sa is set to any one of a plurality of moving speeds in accordance with the frictional resistance of the sheets on the surface of the sheet bundle Sa that contacts the sliding surface 93a. It may be configured to be controlled by the CPU 101.

  Further, in the present embodiment, the discharging unit D moves the sheet bundle Sa by placing the sheet bundle Sa on the elevating tray 92 at the placing position D1 and controlling the speed of the elevating tray 92 to the contact position D2. It is configured to vary the speed, but is not limited to this. For example, the discharging unit D controls the acceleration of the elevating tray 92 to be constant, and the discharging position D1 in the vertical direction according to the frictional resistance of the sheets on the surface of the sheet bundle Sa that contacts the sliding surface 93a of the slope 93. The moving speed of the sheet bundle Sa may be set by setting the position.

  Further, in the present embodiment, the bookbinding apparatus B includes the adhesive application section 52 and is configured to bind the sheets S to bind the sheet bundle Sa into a booklet by applying the adhesive agent, but is not limited thereto. Not done. The bookbinding apparatus B may be configured, for example, to staple and bundle the sheet bundle Sa into a booklet.

  Further, in the present embodiment, the bookbinding apparatus B is configured so that the elevating tray 92 changes the moving speed of the sheet bundle Sa according to the frictional resistance of the sheet S on the surface of the sheet bundle Sa that contacts the sliding surface 93a of the slope 93. However, the present invention is not limited to this. The bookbinding apparatus B may be configured such that the elevating tray 92 can change the moving speed of the sheet bundle Sa depending on the size and weight of the sheet bundle Sa, for example.

37... Conveyance alignment section (bookbinding means): 52... Adhesive application section (bookbinding means): 80... Cutting section (bookbinding means): 91... Transport path: 92... Elevating tray (moving section): 93... Slope (sliding) Part: 93a... Sliding surface: 96... Stacking tray (placement part): 101... CPU (control means): B... Bookbinding device: D... Ejection part (conveying means): S... Sheet: Sa... Sheet bundle

Claims (5)

Bookbinding means for stacking a plurality of sheets into a bundle to form a sheet bundle, and bookbinding the sheet bundle,
A placing portion on which the bound sheet bundle is placed,
A moving section on which the sheet bundle conveyed from the bookbinding means is placed, and the sheet bundle is moved along the conveyance path from the bookbinding means to the placing section, and a downstream side of the conveyance path from the moving section. And has a sliding surface along the conveyance path, and when the moving portion moves beyond a predetermined position, the sheet bundle placed on the moving portion slides on the sliding surface. And a transport unit that transports the sheet bundle along the transport path,
A control unit that varies a moving speed at which the moving unit moves the sheet bundle,
A bookbinding device characterized by the above. The control means determines the moving speed according to the type of the sheet on the surface of the sheet bundle that slides on the sliding surface,
The bookbinding apparatus according to claim 1, wherein the bookbinding apparatus is a bookbinding apparatus. The control means determines the moving speed to be one of a plurality of kinds of moving speeds according to the kind of the sheet on the surface of the sheet bundle that slides on the sliding surface.
The bookbinding apparatus according to claim 1, wherein the bookbinding apparatus is a bookbinding apparatus. The control means is
When the frictional resistance between the sheet on the surface of the bundle of sheets that comes into contact with the sliding portion and the sliding surface of the sliding portion is the first resistance, the moving speed is set to the first value. Decide on the speed,
When the frictional resistance is a second resistance that is larger than the first resistance, the moving speed is determined to be a second speed that is higher than the first speed.
The bookbinding apparatus according to claim 1, wherein the bookbinding apparatus is a bookbinding apparatus. The bookbinding means,
An adhesive applying section for applying an adhesive to the edge of the sheet bundle,
A first mode of adhering a cover sheet to the sheet bundle with an adhesive applied to the sheet bundle;
A second mode in which the cover sheet is not adhered to the sheet bundle,
The control means is
When in the first mode, the moving speed is determined according to the type of the cover,
When the second mode, the moving speed is determined to be a predetermined speed,
The bookbinding apparatus according to claim 1, wherein the bookbinding apparatus is a bookbinding apparatus.

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