JP5947621B2 - Bookbinding equipment - Google Patents

Description

  The present invention relates to a bookbinding apparatus for producing a booklet.

  Conventionally, a bookbinding apparatus for producing a booklet by a case binding function is known. The case binding function is a function for producing a booklet by applying an adhesive to the back surface of a sheet bundle made up of a plurality of printed body sheets, and binding the sheet bundle with a cover sheet.

  The bookbinding device that produces booklets using the case binding function bends the boundary between the back cover and the front cover of the cover sheet, and the boundary between the back cover and the back cover, respectively. Thus, the booklet is completed (for example, see Patent Document 1).

Japanese Patent No. 4631614

  As a cover sheet used in case binding, a sheet thicker and stronger than a body sheet is often used. When the cover sheet is strong, the cover of the completed booklet (front cover and back cover) may open outward. As a result, during conveyance until the completed booklet is ejected from the bookbinding apparatus, the cover of the booklet may come into contact with members or the like in the bookbinding apparatus, which may cause conveyance failure. In addition, the appearance quality of the booklet was impaired.

  The present invention has been made in view of the above, and an object of the present invention is to provide a bookbinding apparatus that can prevent the cover of a booklet from opening outward.

  In order to achieve the above object, a first feature of the bookbinding apparatus according to the present invention is that an adhesive is applied to the back surface and a part of the side surface of a sheet bundle made of a plurality of body sheets, and a cover sheet is placed on the sheet bundle An adhesive portion for binding and binding, and a control portion for controlling the adhesive portion, the control portion corresponding to the stiffness of the cover paper against the side face of the sheet bundle in the adhesive portion The purpose is to adjust the adhesive strength of the paper.

  A second feature of the bookbinding apparatus according to the present invention is that the adhesive portion includes an adhesive application portion that applies an adhesive to a back surface and a part of a side surface of the paper bundle, and the paper bundle on which the adhesive has been applied. The back cover portion of the cover sheet with which the back surface of the cover sheet is in contact with the front cover portion and the boundary portion between the back cover portion and the back cover portion are folded, and the back cover portion and the back cover portion are folded on the paper. A bending portion that presses against the bundle, and the control portion depends on the size of the application area of the adhesive that the adhesive application portion applies to the side surface of the sheet bundle, the pressing time by the bending portion, and the bending portion. The adhesive force of the cover sheet to the side surface of the sheet bundle is adjusted by adjusting at least one of the pressing forces.

  A third feature of the bookbinding apparatus according to the present invention is that the adhesive application unit includes an adhesive storage unit that stores the adhesive, and a horizontal shaft that is substantially parallel to the upper surface of the adhesive in the adhesive storage unit. And a long coating member on which the adhesive adheres to the outer peripheral surface and the sheet bundle are held so that the back surface is substantially horizontal and the longitudinal direction of the back surface is substantially parallel to the longitudinal direction of the coating member. A sheet bundle holding unit that attaches an adhesive to the back surface and a part of the side surface of the sheet bundle by bringing the back surface of the sheet bundle into contact with the outer peripheral surface of the coating member. The sheet bundle is swingable in the thickness direction, and the control unit increases the side surface of the sheet bundle by the sheet bundle holding unit when the application area of the adhesive applied to the side surface of the sheet bundle is enlarged. The sheet bundle is brought into contact with the outer peripheral surface of the coating member by tilting it with respect to the vertical direction. So, by adjusting the inclination angle of the side surface of the paper stack at that time is to adjust the size of the application area of the adhesive agent adhering to the side surface of the paper stack.

  According to the first feature of the bookbinding apparatus according to the present invention, the adhesive strength of the cover sheet to the side surface of the sheet bundle made of the text sheet is adjusted according to the stiffness of the cover sheet. As a result, the bookbinding apparatus can prevent the cover of the booklet from opening outward by adjusting the adhesive strength of the cover sheet to the side surface of the sheet bundle even when the cover sheet is stiff.

  According to the second feature of the bookbinding apparatus according to the present invention, of the size of the application area of the adhesive applied by the adhesive application unit to the side surface of the sheet bundle, the pressing time by the folding part, and the pressing force by the folding part By adjusting at least one of these, it is possible to easily adjust the adhesive strength of the cover sheet to the side surface of the sheet bundle.

  According to the third feature of the bookbinding apparatus according to the present invention, the adhesion on the side surface of the sheet bundle is adjusted by adjusting the inclination angle of the side surface of the sheet bundle with respect to the vertical direction when the sheet bundle is brought into contact with the outer peripheral surface of the coating member. The size of the agent application area can be easily adjusted.

1 is a schematic configuration diagram of a bookbinding system according to an embodiment. It is a block diagram which shows the structure of the control system of the bookbinding system shown in FIG. It is a flowchart for demonstrating operation | movement of a bookbinding apparatus. It is a figure for demonstrating the application | coating operation | movement in case the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle is made into a standard magnitude | size. It is a figure for demonstrating the application | coating operation | movement in case the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle is made into a standard magnitude | size. It is a figure for demonstrating the application | coating operation | movement in case the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle is made into a standard magnitude | size. It is a figure for demonstrating the application | coating operation | movement in the case of making the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle larger than a standard. It is a figure for demonstrating the application | coating operation | movement in the case of making the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle larger than a standard. It is a figure for demonstrating the application | coating operation | movement in the case of making the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle larger than a standard. It is a figure for demonstrating the application | coating operation | movement in the case of making the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle larger than a standard. It is a figure for demonstrating the application | coating operation | movement in the case of making the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle larger than a standard. It is a figure for demonstrating the application | coating operation | movement in the case of making the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle larger than a standard. It is a figure for demonstrating the application | coating operation | movement in the case of making the application area | region of the hot-melt-adhesive agent in the side surface of a sheet bundle larger than a standard. FIG. 6 is a diagram for explaining operations of bonding a cover sheet to a sheet bundle and bending the cover sheet. FIG. 6 is a diagram for explaining operations of bonding a cover sheet to a sheet bundle and bending the cover sheet. FIG. 6 is a diagram for explaining operations of bonding a cover sheet to a sheet bundle and bending the cover sheet.

  Embodiments of the present invention will be described below with reference to the drawings. Throughout the drawings, the same or equivalent parts and components are denoted by the same or equivalent reference numerals. However, it should be noted that the drawings are schematic and different from the actual ones. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

  Further, the embodiment described below exemplifies an apparatus or the like for embodying the technical idea of the present invention, and the technical idea of the present invention is to arrange the components and the like as follows. It is not something specific. The technical idea of the present invention can be variously modified within the scope of the claims.

  FIG. 1 is a schematic configuration diagram of a bookbinding system provided with a bookbinding apparatus according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a configuration of a control system of the bookbinding system shown in FIG. In the following description, the paper surface direction of FIG. Moreover, as shown in FIG. 1, when viewed from the user, the vertical and horizontal directions are the vertical and horizontal directions.

  The bookbinding system 1 according to the present embodiment is a system for producing a booklet (bookbinding product) from a printed material. As shown in FIGS. 1 and 2, the bookbinding system 1 includes a printing apparatus 2 and a bookbinding apparatus 3.

  The printing apparatus 2 performs printing on a cover sheet P1 and a body sheet P2 for producing a booklet by the bookbinding apparatus 3.

  As shown in FIG. 1, the printing apparatus 2 includes a printing apparatus casing 4 (hereinafter referred to as a casing 4 as appropriate). A printing unit 5 is provided in the housing 4. The printing unit 5 performs printing on the cover sheet P1 and the body sheet P2. The printing unit 5 includes line-type inkjet heads 6 </ b> A to 6 </ b> D that discharge inks of cyan (C), magenta (M), yellow (Y), and black (K), respectively. In addition, a loop-shaped printing conveyance path 7 for conveying the cover sheet P1 and the body sheet P2 is provided in the casing 4 so as to surround the printing unit 5. A plurality of rollers (not shown) for conveying the cover sheet P1 and the text sheet P2 are arranged at positions along the print conveyance path 7.

  The left side of the housing 4 is provided with a cover sheet paper feeding unit 8 that feeds the cover sheet P1 to the printing unit 5 side (printing conveyance path 7 side). The cover sheet feeding unit 8 includes a sheet feeding tray 9 on which a plurality of cover sheets P1 are stacked, and a sheet feeding roller 10 that feeds the cover sheet P1 loaded on the sheet feeding tray 9 to the printing unit 5 side. Further, the cover sheet paper feeding unit 8 is disposed along the paper feed conveyance path 11 and the paper feed conveyance path 11 provided between the paper feed tray 9 and the print conveyance path 7, and the cover sheet P1 is printed on the printing unit. And a plurality of rollers (not shown) to be conveyed to the 5 side.

  Below the printing unit 5 in the housing 4 is provided a text sheet feeding unit 12 that feeds the text sheet P2 to the printing unit 5 side (printing conveyance path 7 side). The text paper feeding unit 12 includes a paper feeding tray 13 on which a plurality of text papers P2 are stacked, and a paper feeding roller 14 that feeds the text paper P2 stacked on the paper feeding tray 13 to the printing unit 5 side. The text paper feeding unit 12 is disposed along the paper feeding / conveying path 15 and the paper feeding / conveying path 15 provided between the paper feeding tray 13 and the printing conveying path 7, and the text paper P2 is printed by the printing unit. And a plurality of rollers (not shown) to be conveyed to the 5 side.

  On the upper left side of the print conveyance path 7 is provided a switchback unit 16 for temporarily storing the cover sheet P1 and the text sheet P2. Further, a switchback conveyance path 17 is provided from the left part in the housing 4 to the switchback part 16. The switchback transport path 17 is for carrying the cover sheet P1 and the text sheet P2 upside down and transporting them to the printing unit 5 side during duplex printing. The base end side (right end side) of the switchback transport path 17 can be connected to and disconnected from the print transport path 7 by a flipper (not shown). Rollers (not shown) for carrying the cover sheet P1 and the text sheet P2 into and out of the switchback section 16 are arranged at positions along the switchback conveyance path 17 near the opening of the switchback section 16. Yes.

  On the right side in the housing 4, a communication conveyance path 18 is provided for conveying the cover sheet P <b> 1 and the text sheet P <b> 2 sent out from the printing conveyance path 7 to the bookbinding apparatus 3 side (right direction). The base end side (left end side) of the communication transport path 18 can be connected to and disconnected from the print transport path 7 by a flipper (not shown). A plurality of rollers (not shown) for conveying the cover sheet P1 and the text sheet P2 are arranged at positions along the communication conveyance path 18.

  An operation input unit 19 is provided on the top of the housing 4. The operation input unit 19 receives a user input operation. The operation input unit 19 includes operation buttons, a touch panel, and the like for the user to perform various input operations.

  The printing apparatus 2 includes a print control unit 20. The print control unit 20 includes a CPU, a RAM, a ROM, and the like. The print control unit 20 controls the operation of each unit of the printing apparatus 2 to execute printing. Further, the print control unit 20 provides the bookbinding apparatus 3 with information indicating the stiffness of the cover sheet P1. The information indicating the stiffness is, for example, information indicating the paper type. In this case, for example, the print control unit 20 provides the bookbinding apparatus 3 with information indicating the sheet type of the cover sheet P1 set in advance by a user operation on the operation input unit 19 as information indicating the stiffness of the cover sheet P1. To do.

  Note that the sheet thickness of the cover sheet P1 may be measured during conveyance in the printing apparatus 2, and the obtained sheet thickness may be used as information indicating the stiffness of the cover sheet P1. The paper thickness can be measured by a light transmission sensor, a digital micrometer, or the like.

  The bookbinding apparatus 3 performs bookbinding on the cover sheet P1 and the body sheet P2 printed by the printing apparatus 2 to produce a booklet.

  The bookbinding apparatus 3 includes a bookbinding apparatus casing 31 (hereinafter referred to as a casing 31 as appropriate). In the housing 31, an introduction conveyance path 32 is provided for conveying the printed cover sheet P1 and text sheet P2 sent out from the communication conveyance path 18 of the printing apparatus 2 in the right direction. The proximal end portion (left end portion) of the introduction conveyance path 32 is connected to the distal end portion (right end portion) of the communication conveyance path 18. A plurality of rollers (not shown) for conveying the cover sheet P1 and the text sheet P2 are arranged at positions along the introduction conveyance path 32.

  On the upper right side in the housing 31, there is provided an aligning portion 33 for aligning the printed text sheet P2 to form the sheet bundle PS. The alignment unit 33 includes an alignment tray 34 on which a plurality of text sheets P2 are stacked. The alignment tray 34 can feed out the sheet bundle PS by rotating around a horizontal axis, for example. In addition, an upper bookbinding transport path 35 for transporting the printed cover sheet P1 and text sheet P2 sent out from the introduction transport path 32 to the alignment unit 33 side is provided in the upper part of the housing 31. . The base end (left end) of the upper bookbinding transport path 35 can be connected to and disconnected from the front end (right end) of the introduction transport path 32 by a flipper (not shown).

  In the upper center of the housing 31, a stock tray 36 for temporarily waiting for the printed cover paper P1 is provided. The base end portion (left end portion) of the stock tray 36 can be connected to and blocked from the upper bookbinding transport path 35 by a flipper (not shown). In addition, a roller (not shown) is provided at an appropriate position of the stock tray 36 to send the printed cover sheet P1 from the stock tray 36 to the upper bookbinding transport path 35 side. A plurality of rollers (not shown) for conveying the cover sheet P1 and the text sheet P2 are disposed at positions along the upper bookbinding conveyance path 35. Among these, a plurality of rollers positioned on the left side of the stock tray 36 along the upper bookbinding transport path 35 can transport the printed cover sheet P1 by reversing the transport direction.

  A cutting portion 37 is provided on the left side of the stock tray 36 in the housing 31. The cutting unit 37 cuts the printed cover sheet P1 to have a size corresponding to the thickness of the sheet bundle PS. The cutting unit 37 includes a cutter 38 that cuts the cover sheet P1 with the upper bookbinding transport path 35 therebetween.

  An adhesive portion 39 is provided at the center in the housing 31. The adhesive portion 39 applies an adhesive to the back surface PSa and a part of the side surface PSb of the sheet bundle PS sent out from the alignment tray 34 (alignment portion 33), and the printed cover sheet P1 sent out from the cutting portion 37. The sheet bundle PS is bonded to the paper.

  As shown in FIGS. 1 and 2, the bonding portion 39 includes an adhesive application portion 40. The adhesive application unit 40 applies a hot melt adhesive (corresponding to the adhesive in the claims) G to the back surface PSa and a part of the side surface PSb of the sheet bundle PS. The adhesive application unit 40 includes a pair of clampers (corresponding to the sheet bundle holding unit in the claims) 41A and 41B that can move while holding the sheet bundle PS.

  2, the adhesive application unit 40 includes a clamper opening / closing motor 42 that opens and closes the pair of clampers 41A and 41B, a clamper lateral movement motor 43 that moves the pair of clampers 41A and 41B in the left-right direction, A clamper vertical movement motor 44 that moves the pair of clampers 41A and 41B in the vertical direction and a clamper swing motor 45 that swings the pair of clampers 41A and 41B in the left-right direction are provided.

  In addition, the adhesive application unit 40 includes an adhesive container 46 that stores the hot melt adhesive G. The adhesive container 46 is disposed on the lower left side of the alignment tray 34. An application roller (corresponding to an application member in claims) 47 that applies hot-melt adhesive G to the back surface PSa and part of the side surface PSb of the sheet bundle PS is provided in the adhesive container 46. The application roller 47 is formed in a long cylindrical shape extending in the front-rear direction, and is rotatably supported on a horizontal rotation shaft 48 that is substantially parallel to the upper surface of the hot melt adhesive G inside the adhesive container 46. Has been. A hot melt adhesive G adheres to the outer peripheral surface of the application roller 47. When the sheet bundle PS comes into contact with the portion of the application roller 47 that is exposed upward from the upper surface of the hot melt adhesive G, the hot melt adhesive G attached to the outer peripheral surface of the application roller 47 adheres to the sheet bundle PS.

  As shown in FIG. 2, the adhesive application unit 40 includes an application roller drive motor 49 that rotates the application roller 47 together with the rotation shaft 48. The application roller 47 is rotated by the application roller drive motor 49 so that the portion of the outer peripheral surface of the application roller 47 to which the hot melt adhesive G is attached can be exposed.

  As shown in FIGS. 1 and 2, the adhesive portion 39 includes a bent portion 50. The bent portion 50 is provided on the left side of the adhesive accommodating portion 46. The bending portion 50 includes a pair of back folding plates 51A and 51B and an abutment plate 52 provided below the back folding plates 51A and 51B. The back folding plates 51A and 51B are movable in the left-right direction on the abutment plate 52 so as to approach and separate from each other. The back folding plates 51A and 51B have pressing surfaces 51a and 51b facing each other. The pressing surfaces 51 a and 51 b are vertical surfaces that are substantially orthogonal to the upper surface of the substantially horizontal abutting plate 52. The abutting plate 52 is movable in the left-right direction. In a state where the back surface PSa of the sheet bundle PS to which the hot melt adhesive G has been applied is in contact with the abutting plate 52 via the cover sheet P1, the pressing surfaces 51a and 51b of the back folding plates 51A and 51B from the left and right are the cover sheets. By pressing the sheet bundle PS through P1, the cover sheet P1 is bent.

  As shown in FIG. 2, the bending portion 50 includes a back folding plate moving motor 53 that moves the back folding plates 51 </ b> A and 51 </ b> B in the left-right direction, and an abutting plate moving motor 54 that moves the abutting plate 52 in the left-right direction. And.

  A lower bookbinding transport path 55 for transporting the printed cover sheet P1 sent from the upper bookbinding transport path 35 to the folding unit 50 is provided below the upper bookbinding transport path 35 in the housing 31. . The base end portion (left end portion) of the lower bookbinding transport path 55 can be connected to or disconnected from the base end portion (left end portion) of the upper bookbinding transport path 35 by a flipper (not shown). At positions along the lower bookbinding transport path 55, a plurality of rollers (not shown) for transporting the cover sheet P1 to the bent portion 50 side are arranged.

  The introduction conveyance path 32, the upper bookbinding conveyance path 35, the lower bookbinding conveyance path 55, the rollers arranged along these, the rollers for sending the cover sheet P <b> 1 from the stock tray 36 to the upper bookbinding conveyance path 35, and the respective rollers are driven. A conveyance unit 56 is configured by a motor (not shown).

  Guide members 57 and 58 for guiding the completed booklet B falling from the bent portion 50 are provided below the bent portion 50 in the housing 31.

  Under the guide members 57 and 58, a discharge portion 59 for discharging the booklet B dropped from the bent portion 50 to the outside of the housing 31 is provided. The discharge unit 59 includes a transport conveyor 60 that receives the booklet B dropped from the bending unit 50, transports the booklet B to the left side, and drops it downward. In addition, the discharge unit 59 includes a discharge conveyor 61 provided on the lower side of the transfer conveyor 60. The discharge conveyor 61 receives the booklet B dropped from the transport conveyor 60, transports the booklet B to the right side, and sends it out of the housing 31. A receiving table 62 for receiving the booklet B sent out from the discharge conveyor 61 is provided on the downstream side of the discharge conveyor 61.

  The bookbinding apparatus 3 includes a bookbinding control unit (corresponding to a control unit in claims) 63. The bookbinding control unit 63 includes a CPU, a RAM, a ROM, and the like. The bookbinding control unit 63 controls the operation of each unit of the bookbinding apparatus 3 to execute bookbinding processing. In the bookbinding process, the bookbinding control unit 63 controls the bonding unit 39 so as to adjust the adhesive force of the cover sheet P1 to the side surface PSb of the sheet bundle PS according to the stiffness of the cover sheet P1.

  Next, the operation of the bookbinding system 1 will be described.

  First, a printing operation in the printing apparatus 2 will be described.

  For example, the printing apparatus 2 starts a printing operation by receiving print data from an external PC (personal computer).

  When the printing operation is started, the print control unit 20 sequentially feeds a plurality of text sheets P2 from the text sheet feeding unit 12 to the printing unit 5 side. The print control unit 20 causes the ink-jet heads 6 </ b> A to 6 </ b> D of the printing unit 5 to print the fed text sheet P <b> 2 along the print conveyance path 7. Duplex printing is possible by circulating and transporting the text sheet P2 via the switchback transport path 17. The print control unit 20 sequentially sends a plurality of printed text sheets P <b> 2 to the introduction conveyance path 32 side of the bookbinding apparatus 3 through the communication conveyance path 18.

  After finishing the feeding of the body paper P2, the print control unit 20 feeds the cover paper P1 from the cover paper feeding unit 8 to the printing unit 5 side. The print control unit 20 causes the supplied cover sheet P1 to be printed by the inkjet heads 6 </ b> A to 6 </ b> D of the printing unit 5 while being conveyed along the print conveyance path 7. Double-sided printing is possible by circulating and transporting the cover paper P1 via the switchback transport path 17. The print control unit 20 sends the printed cover sheet P1 to the introduction conveyance path 32 side of the bookbinding apparatus 3 through the communication conveyance path 18.

  At this time, the print control unit 20 provides the bookbinding apparatus 3 with information indicating the stiffness of the cover sheet P1. For example, the print control unit 20 provides the bookbinding apparatus 3 with information indicating the sheet type of the cover sheet P1 preset by a user operation on the operation input unit 19 as information indicating the stiffness of the cover sheet P1.

  Next, the bookbinding operation in the bookbinding apparatus 3 will be described with reference to the flowchart of FIG.

  First, in step S10, the bookbinding control unit 63 conveys the text sheets P2 sequentially conveyed from the printing apparatus 2 from the communication conveyance path 18 along the upper bookbinding conveyance path 35 to the aligning unit 33, and a plurality of text sheets. P2 is matched by the matching unit 33. Thereby, the sheet bundle PS is formed.

  Next, in step S <b> 20, the bookbinding control unit 63 places the cover sheet P <b> 1 conveyed from the printing apparatus 2 at a predetermined position on the back folding plates 51 </ b> A and 51 </ b> B of the folding unit 50. Specifically, the bookbinding control unit 63 conveys the cover sheet P1 from the communication conveyance path 18 along the upper bookbinding conveyance path 35, and the cutting unit 37 measures the dimensions according to the thickness of the sheet bundle PS that is known in advance. Cut to length to prepare. Then, the bookbinding control unit 63 loads the cover sheet P1 whose length is adjusted into the stock tray 36. Thereafter, the bookbinding control unit 63 unloads the cover sheet P1 from the stock tray 36, conveys the cover sheet P1 along the upper bookbinding conveyance path 35 and the lower bookbinding conveyance path 55 to the folding unit 50, and a predetermined position on the back folding plates 51A and 51B. To place.

  Next, in step S30, the bookbinding control unit 63 causes the adhesive application unit 40 to apply the hot melt adhesive G to the sheet bundle PS. Specifically, the bookbinding control unit 63 sends out the sheet bundle PS from the alignment unit 33 and clamps the sheet bundle PS by the clampers 41A and 41B. Next, the bookbinding control unit 63 moves the clampers 41A and 41B in a state where the sheet bundle PS is clamped, and brings the sheet bundle PS into contact with the application roller 47, thereby attaching the hot melt adhesive G to the sheet bundle PS.

  Here, the bookbinding control unit 63 adjusts the size of the application region of the hot melt adhesive G on the side surface PSb of the sheet bundle PS based on the information indicating the stiffness of the cover sheet P1 provided from the printing apparatus 2. .

  First, a coating operation when the stiffness of the cover sheet P1 is relatively small and the coating area on the side surface PSb of the sheet bundle PS is set to a standard size will be described with reference to FIGS.

  When the clampers 41A and 41B clamp the sheet bundle PS sent out from the aligning section 33, the bookbinding control section 63 moves the clampers 41A and 41B and the sheet bundle PS above the application roller 47 as shown in FIG. In FIG. 4, the clampers 41 </ b> A and 41 </ b> B hold the sheet bundle PS so that the back surface PSa is substantially horizontal and the longitudinal direction of the back surface PSa is substantially parallel to the longitudinal direction (front-rear direction) of the application roller 47. At this time, the side surface PSb of the sheet bundle PS is substantially parallel to the vertical direction (vertical direction). Further, the center in the thickness direction (left-right direction) of the back surface PSa is located immediately above the center of the rotation shaft 48 of the application roller 47.

  From the state of FIG. 4, the bookbinding control unit 63 moves the clampers 41 </ b> A and 41 </ b> B and the sheet bundle PS downward, and brings the back surface PSa of the sheet bundle PS into contact with the outer peripheral surface of the application roller 47 as shown in FIG. 5. As a result, the hot melt adhesive G adhered on the outer peripheral surface of the application roller 47 adheres to the back surface PSa and a part of the side surface PSb of the sheet bundle PS. The hot melt adhesive G on the outer peripheral surface of the application roller 47 is in the form of a film having a certain thickness. For this reason, when the back surface PSa of the sheet bundle PS is brought into contact with the application roller 47 as shown in FIG. 5, the hot melt adhesive G mainly adheres to the back surface PSa, but the side surface PSb also has an end on the back surface PSa side. The hot melt adhesive G adheres to the surface.

  Thereafter, as shown in FIG. 6, the bookbinding control unit 63 moves the clampers 41A and 41B and the sheet bundle PS upward. Thereby, the application of the hot melt adhesive G to the sheet bundle PS is completed.

  On the other hand, a coating operation when the stiffness of the cover sheet P1 is relatively large and the coating area on the side surface PSb of the sheet bundle PS is larger than the standard will be described with reference to FIGS.

  The bookbinding control unit 63 drives the clamper swing motor 45 from the state in which the clampers 41A and 41B hold the sheet bundle PS as shown in FIG. 4 to move the clampers 41A and 41B as shown in FIG. Let it tilt. Thereby, the side surface PSb of the sheet bundle PS is inclined with respect to the vertical direction (vertical direction).

  Next, as shown in FIG. 8, the bookbinding control unit 63 moves the clampers 41 </ b> A and 41 </ b> B and the sheet bundle PS downward while bringing the sheet bundle PS into contact with the outer peripheral surface of the application roller 47. As a result, the hot melt adhesive G adhering to the outer peripheral surface of the application roller 47 adheres mainly to a part of the right side PSb of the sheet bundle PS.

  Next, the bookbinding control unit 63 moves the clampers 41A and 41B and the sheet bundle PS upward, and then returns the postures of the clampers 41A and 41B and the sheet bundle PS to the same state as in FIG. 4, as shown in FIG. .

  Next, from the state of FIG. 9, the bookbinding control unit 63 moves the clampers 41 </ b> A and 41 </ b> B and the sheet bundle PS downward so that the back surface PSa of the sheet bundle PS contacts the outer peripheral surface of the application roller 47 as shown in FIG. 10. Let Thereby, the hot melt adhesive G adheres mainly to the back surface PSa of the sheet bundle PS.

  Next, the bookbinding control unit 63 moves the clampers 41A and 41B and the sheet bundle PS upward, and then, as shown in FIG. 11, on the opposite side to FIG. 41A and 41B and the sheet bundle PS are tilted.

  Next, as shown in FIG. 12, the bookbinding control unit 63 moves the clampers 41 </ b> A and 41 </ b> B and the sheet bundle PS downward while bringing the sheet bundle PS into contact with the outer peripheral surface of the application roller 47. As a result, the hot melt adhesive G adheres mainly to a part of the left side surface PSb of the sheet bundle PS.

  Thereafter, the bookbinding control unit 63 moves the clampers 41A and 41B and the sheet bundle PS upward, and then returns the postures of the clampers 41A and 41B and the sheet bundle PS to the same state as in FIG. 4, as shown in FIG. . Thereby, the application of the hot melt adhesive G to the sheet bundle PS is completed.

  As shown in FIGS. 6 and 13, in the coating operation described using FIGS. 7 to 13 described above, the side surface PSb of the sheet bundle PS is larger than the standard coating operation described using FIGS. The width W of the hot melt adhesive G coating area can be increased. Thereby, the adhesive force of the cover sheet P1 to the side surface PSb of the sheet bundle PS can be increased.

  The bookbinding control unit 63 determines the inclination angle θ with respect to the vertical direction of the side surface PSb of the sheet bundle PS according to the stiffness of the cover sheet P1. The bookbinding control unit 63 increases the inclination angle θ as the stiffness of the cover sheet P1 increases. As the inclination angle θ increases, the width W of the hot melt adhesive G application region on the side surface PSb of the sheet bundle PS increases. For this reason, the larger the inclination angle θ, the greater the adhesion of the cover sheet P1 to the side surface PSb of the sheet bundle PS.

  Returning to the flowchart of FIG. 3, when the application of the hot melt adhesive G to the sheet bundle PS (step S30) is completed, in step S40, the bookbinding control unit 63 uses the folding unit 50 to cover the cover sheet P1 to the sheet bundle PS. And the cover sheet P1 are bent.

  Specifically, the bookbinding control unit 63 first moves the clampers 41A and 41B and the sheet bundle PS from the upper side of the application roller 47 to the left, and places them on the back folding plates 51A and 51B as shown in FIG. A sheet bundle PS is disposed above the center of the placed cover sheet P1. Next, the bookbinding control unit 63 moves the clampers 41A and 41B and the sheet bundle PS downward, and brings the back surface PSa of the sheet bundle PS into contact with the butting plate 52 through the cover sheet P1.

  Next, the bookbinding control unit 63 moves the back folding plates 51A and 51B so as to approach each other, and the lower end portion of the sheet bundle PS is moved by the pressing surfaces 51a and 51b of the back folding plates 51A and 51B as shown in FIG. Then, it is pressed from the left and right through the cover sheet P1. Thereby, the back folding plate 51A bends the boundary portion between the back cover portion of the cover sheet P1 with which the back surface PSa of the sheet bundle PS abuts and the front cover portion (or the back cover portion). Further, the back folding plate 51B bends the boundary portion between the back cover portion and the back cover portion (or front cover portion) of the cover paper P1. Further, by pressing the cover sheet P1 against the sheet bundle PS by the back folding plates 51A and 51B, the front cover portion and the back cover portion of the cover sheet P1 are applied by the hot melt adhesive G applied to the side surface PSb of the sheet bundle PS. The end portion on the spine cover side is bonded to the side surface PSb of the sheet bundle PS.

  When the back folding plates 51A and 51B sandwich the sheet bundle PS and the cover sheet P1, the bookbinding control unit 63 releases the clamping of the sheet bundle PS by the clampers 41A and 41B. Then, the bookbinding control unit 63 moves the clampers 41A and 41B upward.

  Here, the bookbinding control unit 63 adjusts the pressing time and pressing force by the back folding plates 51A and 51B in accordance with the stiffness of the cover sheet P1. The adhesive force of the cover sheet P1 to the side surface PSb of the sheet bundle PS by the hot melt adhesive G can be increased as the pressing time by the back folding plates 51A and 51B is increased and the pressing force is increased. The bookbinding control unit 63 adjusts the pressing time and the pressing force by the back folding plates 51A and 51B by the drive control of the back folding plate moving motor 53.

  When the pressing time of the back folding plates 51A and 51B corresponding to the stiffness of the cover sheet P1 is completed, the booklet B is completed.

  When the booklet B is completed, the bookbinding control unit 63 discharges the booklet B to the receiving tray 62 in step S50. Specifically, as shown in FIG. 16, the bookbinding control unit 63 separates the back folding plates 51A and 51B from the booklet B and retracts the butting plate 52 to the left side. As a result, the booklet B falls from the bent portion 50.

  The booklet B dropped from the bent portion 50 is landed on the transport conveyor 60 while being guided by the guide members 57 and 58. The booklet B is transported leftward by the transport conveyor 60 and falls onto the discharge conveyor 61. Then, the booklet B is conveyed rightward by the discharge conveyor 61 and discharged to the receiving tray 62.

  As described above, the bookbinding apparatus 3 adjusts the adhesive force of the cover sheet P1 to the side surface PSb of the sheet bundle PS according to the stiffness of the cover sheet P1. As a result, the bookbinding apparatus 3 can prevent the cover of the booklet B from opening outward by adjusting the adhesive force of the cover sheet P1 to the side surface PSb of the sheet bundle PS even when the cover sheet P1 is strong. If the cover of the booklet B is opened outward, the cover of the booklet B conveyed by the conveyor 60 may come into contact with the guide member 57, causing a conveyance failure. Moreover, the external appearance quality of the booklet B is impaired. In the bookbinding apparatus 3, since it is possible to suppress the cover of the booklet B from being opened to the outside, it is possible to suppress the occurrence of the conveyance failure as described above and the deterioration of the appearance quality of the booklet B.

  Further, in the bookbinding apparatus 3, the size of the application region of the hot melt adhesive G on the side surface PSb of the sheet bundle PS, the pressing time by the back folding plates 51A and 51B when the cover sheet P1 is adhered to the sheet bundle PS, and the back By adjusting the pressing force by the folding plates 51A and 51B, the adhesive force of the cover sheet P1 to the side surface PSb of the sheet bundle PS can be easily adjusted.

  Further, in the bookbinding apparatus 3, the hot melt adhesive on the side surface PSb of the sheet bundle PS is adjusted by adjusting the inclination angle θ with respect to the vertical direction of the side surface PSb of the sheet bundle PS when the hot melt adhesive G is applied to the sheet bundle PS. The size of the application area of the adhesive G can be easily adjusted.

  In the above-described embodiment, the adjustment of the adhesive force of the cover sheet P1 to the side surface PSb of the sheet bundle PS is used to adjust the size of the hot melt adhesive G application area on the side surface PSb of the sheet bundle PS and the cover sheet to the sheet bundle PS. Although the three elements of the pressing time by the back folding plates 51A and 51B and the pressing force by the back folding plates 51A and 51B when the paper P1 is bonded are used, one or two of them may be omitted. .

  In the above embodiment, the information indicating the stiffness of the cover paper P1 is provided from the printing device 2 to the bookbinding device 3. However, the bookbinding device 3 acquires the information indicating the stiffness of the cover paper P1. May be. For example, the bookbinding apparatus 3 measures the sheet thickness of the cover sheet P1 with a light transmission sensor or a digital micrometer while the cover sheet P1 is being conveyed, and the obtained sheet thickness indicates the stiffness of the cover sheet P1. It may be used as

  Further, a protruding portion may be provided on the outer peripheral surface of the application roller 47 so that the hot melt adhesive G can be applied to the side surface PSb of the sheet bundle PS.

  The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments. For example, some components may be deleted from all the components shown in the embodiment.

DESCRIPTION OF SYMBOLS 1 Bookbinding system 2 Printing apparatus 3 Bookbinding apparatus 39 Bonding part 40 Adhesive application part 41A, 41B Clamper 46 Adhesive accommodating part 47 Application roller 50 Bending part 51A, 51B Back folding plate 51a, 51b Pressing surface 52 Butting plate 63 Bookbinding control Part B Booklet G Hot melt adhesive P1 Cover paper P2 Text paper PS Paper bundle PSa Back PSb Side

Claims (3)

An adhesive that applies adhesive to the back and a part of a side of a bundle of paper sheets composed of a plurality of text sheets, and binds and binds a cover sheet to the bundle of sheets;
A control unit for controlling the bonding unit,
The control unit acquires information indicating the stiffness of the cover sheet, and based on the acquired information indicating the stiffness of the cover sheet, the adhesive strength of the cover sheet to the side surface of the sheet bundle in the adhesive unit Is adjusted so as to have an adhesive force for preventing the cover sheet from opening outward in a booklet completed by case binding. The adhesive portion is
An adhesive application unit that applies an adhesive to the back and part of the side of the sheet bundle;
Bending the boundary portion between the back cover portion and the back cover portion of the cover sheet, and the boundary portion between the back cover portion and the back cover portion, with which the back surface of the sheet bundle to which the adhesive has been applied is in contact, and the back cover A folding part that presses the part and the back cover part against the sheet bundle,
The control unit includes at least one of a size of an adhesive application region that the adhesive application unit applies to the side surface of the sheet bundle, a pressing time by the bending unit, and a pressing force by the bending unit. 2. The bookbinding apparatus according to claim 1, wherein an adhesive force of the cover sheet with respect to a side surface of the sheet bundle is adjusted by adjusting the sheet width. The adhesive application part is
An adhesive container for housing the adhesive;
In the adhesive container, a long application member that is supported by a horizontal shaft that is substantially parallel to the upper surface of the adhesive, and the adhesive adheres to the outer peripheral surface;
The sheet bundle is held such that the back surface is substantially horizontal and the longitudinal direction of the back surface is substantially parallel to the longitudinal direction of the coating member, and the back surface of the sheet bundle is brought into contact with the outer peripheral surface of the coating member. A paper bundle holding part for attaching an adhesive to the back and part of the side of the paper bundle;
The paper bundle holder is capable of swinging the paper bundle in its thickness direction,
In the case where the application area of the adhesive to be applied to the side surface of the sheet bundle is enlarged, the control unit tilts the side surface of the sheet bundle with respect to the vertical direction by the sheet bundle holding unit, and causes the sheet bundle to be attached to the application member. 3. The size of the application area of the adhesive adhering to the side surface of the sheet bundle is adjusted by contacting the outer peripheral surface and adjusting the inclination angle of the side surface of the sheet bundle at that time. The bookbinding apparatus described in 1.