JP2007326255A - Booklet transfer machine of bookbinding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the number of copies of successively bindable booklets and thereby to improve processing efficiency, in a bookbinding machine wherein the booklets are bound with ring binders fitted. <P>SOLUTION: A booklet transfer device 61 and a conveyor extension unit 62 are equipped with tilted table parts 63 and 68 of which the front sides are lowered, and screw conveyor shafts 65 and 70 disposed at the front edges of the tilted table parts are driven by a motor 66. In this structure, the conveyor extension unit is connected to the inside of the bookbinding machine 1. The booklets fitted with the ring binders and bound in the bookbinding machine are transferred onto the conveyor extension unit and conveyed outside, with the ring binders engaged with the rotating screw conveyor shafts. When the conveyed booklet pushes a latch opening-closing lever 83 of the booklet transfer device, an underside opening door 82 opens and the booklet drops into an accommodating part in the booklet transfer device to be loaded therein. Bookbinding can be continued until the accommodating part is filled with the booklets. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a booklet transfer device of a bookbinding machine that performs simple bookbinding processing such as staple binding or punch hole formation and binder mounting on printed matter, and in particular, to increase the continuous processing capability of the bookbinding machine. The present invention relates to a booklet transfer device for a bookbinding machine.

Copiers with built-in staplers and punch devices as post-processing devices that automatically execute stapling and punching with staples following copying (Patent Documents 1, 2, etc.) are widely known and discharged from the copier. There is also a proposal of a post-processing device that performs bookbinding by attaching a ring binder to a printed material after punching the printed material to be printed (Patent Document 3). The post-processing apparatus of Patent Document 3 is the application of the applicant of the present application, but the applicant of the present application has applied for a post-processing apparatus that further develops the configuration of Patent Document 3 as Patent Application 2005-216562. Here, a punching process is sequentially performed on the printed materials discharged from the copying machine one by one, and after punching one sheet of paper, a ring binder is attached to the one printed material and discharged. The configuration of the post-processing device is presented in detail.
JP 2000-185869 A Japanese Patent No. 3570611 JP 2005-138549 A

  A conventionally known post-processing apparatus for printed materials has a structure in which booklets that have been bound are stacked in a booklet accommodating section such as a stack tray provided on the side of the main body of the post-processing apparatus or a bucket in the main body. The number of continuous bookbinding parts is limited by the capacity of the accommodating part. Therefore, when bookbinding with a larger number of copies, the bookbinding machine or the copier and the bookbinding machine must be stopped at the limit number of continuous bookbinding, and the booklet must be taken out from the booklet storage unit. There is a problem that the efficiency is low because of the interruption. Accordingly, there is a technical problem to be solved in order to improve the processing efficiency of the bookbinding machine by increasing the number of copies that can be bound continuously, and the present invention aims to solve the above problem.

  The present invention is proposed to achieve the above object, and takes a printed matter on a paper tray provided in a bookbinding machine or a printed matter sent from a copying machine or the like to a bookbinding machine, and forms a printed matter for one book. A booklet transfer device connected to a bookbinding machine that performs ring binder mounting processing or punch processing and ring binder mounting processing on the table, and extends along the longitudinal edge of the table portion and the table portion extending from the bookbinding machine to the outside. And a screw conveyor shaft that engages with the booklet ring binder. The booklet after bookbinding is received in the bookbinding machine, and the rotating screw conveyor shaft engages with the booklet ring binder to hold the booklet on the table. It is intended to provide a booklet transport device for a bookbinding machine, which is formed so as to be transported to the end of a section.

  In addition, a lower opening door is provided at the end of the table portion of the screw conveyor, the lower opening door is held in a closed position by a latch mechanism, and a latch opening / closing lever is provided on the upper surface of the table portion, to the end of the table portion. When the conveyed booklet pushes the latch opening / closing lever, the lower opening door opens and the booklet is formed to drop into the lower booklet storage part, and the lower opening door that has been rotated to the open position is returned to the closed position. A booklet transfer device for a bookbinding machine provided with an automatic return mechanism for latching is provided.

  The table portion of the booklet transfer device provides a booklet transfer device for a bookbinding machine in which the screw conveyor shaft side is inclined downward relative to the other side.

  In addition, a plurality of pressing rollers are arranged in series on the screw conveyor shaft along the axial direction of the screw conveyor shaft, and the booklet ring binder meshing with the screw conveyor shaft is pressed from above by the plurality of pressing rollers. A booklet transfer device for a bookbinding machine is provided.

  A pair of screw conveyor shafts arranged vertically parallel along one edge in the longitudinal direction of the table portion, and provided with a drive mechanism for synchronously rotating the pair of screw conveyor shafts, the booklet ring binder on the table portion The present invention provides a booklet transfer device for a bookbinding machine formed so as to feed a booklet sandwiched from above and below by a pair of screw conveyor shafts.

  Also provided is a booklet transfer device for a bookbinding machine that is formed by dividing the table portion of the booklet transfer device and the screw conveyor shaft in the longitudinal direction and providing a joint on the divided screw conveyor shaft so that they can be connected / separated to each other. To do.

  The booklet transfer device of the bookbinding machine of the present invention transfers the booklet with the ring binder in the bookbinding machine to the end of the table part by the screw conveyor shaft, so continuous bookbinding exceeding the capacity of the booklet storage part in the bookbinding machine is possible As a result, the processing efficiency at the time of performing multi-binding is improved. Moreover, the structure which meshes and conveys a screw conveyor axis | shaft to a ring binder can make a conveyor mechanism thinner than a belt conveyor, a slat conveyor, etc., and the design of the mechanism regarding a coupling | bonding with a bookbinding machine is also easy.

  In addition, a table is provided by providing a lower opening door at the end of the table portion, and the booklet transported on the table portion pushes the latch opening / closing lever to open the lower opening door and the booklet falls into the booklet storage portion. A booklet does not stay on the part, and a large amount of bookbinding can be performed continuously.

  In addition, by tilting the screw conveyor shaft side of the table part downward, the booklet on the table part moves toward the screw conveyor shaft side by gravity, and the ring binder of the booklet and the screw conveyor shaft are securely meshed to ensure stable feeding. Turn into.

  Moreover, by arranging a plurality of pressing rollers on the screw conveyor shaft, the booklet ring binder meshing with the screw conveyor shaft is prevented from floating, and the ring binder and the screw conveyor shaft are securely meshed with each other. The feed is stabilized.

  In addition, a configuration in which a pair of synchronously rotating screw conveyor shafts are arranged vertically in parallel along one edge in the longitudinal direction of the table portion, and a booklet ring binder is sandwiched from above and below by the pair of screw conveyor shafts to be sent. The screw conveyor shaft and the ring binder are not disengaged, and the feed can be stabilized.

  In addition, the table part of the screw conveyor type booklet transfer device and the screw conveyor shaft are divided in the longitudinal direction and connected by a joint, making it convenient for transporting and storing the booklet transfer device. Easy to attach and detach.

  The present invention takes a printed matter on a paper tray provided in a bookbinding machine or a printed matter sent from a copying machine or the like to a bookbinding machine, and attaches a ring binder to a printed matter, or punches and a ring binder. A booklet transfer device connected to a bookbinding machine that performs a mounting process, and is arranged along a longitudinal edge of the table unit extending from the inside of the bookbinding machine to the outside and engaged with a ring binder of the booklet A booklet that has been formed so that the booklet after bookbinding processing is received in the bookbinding machine, and the rotating screw conveyor shaft engages with the booklet ring binder to transfer the booklet to the end of the table unit. The booklet transfer device achieves the purpose of increasing the processing efficiency by increasing the number of continuous bookbinding processes of the bookbinding machine.

  First, the bookbinding machine will be described prior to the description of the booklet transfer device. The bookbinding machine 1 shown in FIG. 1 performs punch hole formation processing on printed materials supplied one by one from the paper feeder 3 mounted on the main body 2 into the main body 2, and punch holes for a single printed material. After the formation process is completed, a ring binder mounting process is performed on the printed material for one book.

  An operation panel 4 is arranged on the inclined surface at the top front of the main body 2, and the door 5 on the front of the main body 2 is opened to load a binder cartridge into the main body 2 or to remove jammed paper. Can do. The paper feeding device 3 is a tower type device in which six-stage paper trays 6, 7, 8, 9, 10, and 11 are arranged with a space in the vertical direction, and connectors are connected to the power supply unit and the control unit in the main body 2 The start and stop of sheet feeding and the sheet feeding sequence for each sheet tray are controlled by a control unit (not shown) on a circuit board in the main body 2. The paper feeding device 3 can be attached to and detached from the main body 2, and can be replaced with a paper feeding device having a different number of paper trays depending on the application.

  A normal collating machine sets printed products in multiple paper trays for each page and takes out the printed materials one by one from the multiple paper trays, but the bookbinding machine 1 uses each of the multiple paper trays. Set the printed material for one book in the paper, send the printed material on one paper tray continuously to the bookbinding department to book one book, and then send the printed material on the other paper tray and bookbinding processing It is configured to move.

  FIG. 2 shows a cross section of the bookbinding machine 1, and the six-stage paper trays 6, 7, 8, 9, 10, 11 of the paper feeder 3 are arranged in an inclined posture with the left end on the paper feeding side lowered. In addition, pickup rollers 12, 13, 14, 15, 16, 17 are provided at the left end. The pickup rollers 12, 13, 14, 15, 16, and 17 are controlled to be started and stopped by the control unit, and at the time of startup, the uppermost layer of a plurality of printed materials set on the paper tray is sent forward (left). .

  Each paper tray 6, 7, 8, 9, 10, 11 is provided with a mechanical or optical paper sensor (not shown), like an automatic paper feeder of a normal copying machine, The control unit of the bookbinding machine detects the presence or absence of paper from the on / off state of the paper sensor.

  A vertical paper guide 18 and six sets of feeding rollers 19, 20, 21, 22, 23, 24 are provided in front of the six-stage paper trays 6, 7, 8, 9, 10, 11. . The feed rollers 19, 20, 21, 22, 23, 24 correspond to each of the six-stage paper trays 6, 7, 8, 9, 10, 11 and the paper trays 6, 7, 8, 9, 10, 11 Driven rollers 25, 26, 27, 28, 29, which are arranged on the front extension line of the roller, are synchronously driven by an endless belt (not shown), and rotate in contact with the feed rollers 19, 20, 21, 22, 23, 24. Along with 30, the paper is fed downward along the paper guide 18 with the leading edge of the printed matter sent out by the pickup rollers 12, 13, 14, 15, 16, 17 interposed therebetween.

  The printed matter turns to the left at the lower end portion of the paper guide 18 and enters the direction turning guide portion 32 provided with the feed roller 31. The printed matter is turned rightward at the lower portion of the direction turning guide portion 32. Is fed into the main body 2 from the upper left side opening.

  The printed matter is fed onto the paper table 34 of the punch unit 33 arranged in a right-down posture, positioned after being hit by a stopper (not shown), and then punched by the punch 35. After punching, the stopper is retracted upward from the paper path, and the paper is sent to the paper alignment unit 36 at the lower right.

  A binder mounting unit 37 is disposed on the right side of the paper aligning section 36 in a right-down posture that is closer to the vertical than the punch unit 33. The binder mounting unit 37 includes an upper binder cartridge housing portion 38 and a lower binder mounting mechanism 39. The binder mounting mechanism 39 swings from the vertical position to the left with the lower end as a fulcrum. One ring binder is taken out from the binder cartridge 40, rotated to the left side, and after the ring binder is mounted in the punch hole of the printed matter of the paper aligning section 36, the operation of returning to the vertical position is executed. This binder mounting operation is performed when a punched printed material is stored in the paper alignment unit 36.

  When the binder mounting mechanism unit 39 returns to the vertical posture after the binder is mounted, the printed material for one book loaded with the binder falls to the swing type conveyor unit 42 of the discharge mechanism unit 41 disposed below the paper aligning unit 36. Can be accepted. The swing type conveyor unit 42 that has received the booklet rotates to the left with the lower end as a fulcrum, and the booklet is sent to the fixed conveyor unit 43 at the upper left, and the booklet is further sent to the upper left by the fixed type conveyor unit 43 It is loaded on the stocker unit 44.

  In this way, if you place one printed copy on each paper tray and press the Start key on the operation panel 4, the paper trays will be printed in the order of paper trays 6, 7, 8, 9, 10, and 11. The printed matter is sequentially sent out, and punching processing, binder mounting processing, and discharging processing are performed for each book.

  Next, the booklet transfer device will be described. The booklet transfer device 61 shown in FIGS. 3 to 5 is specialized for conveying booklets bound with a ring binder as a screw conveyor configuration, and is connected to the front surface of the bookbinding machine 1 via a conveyor extension unit 62. Yes. In FIG. 4, a hook (not shown) is provided on the right side surface of the booklet transfer device 61, and the catch hole formed on the left side surface of the conveyor extension unit 62 is hooked on the hook of the booklet transfer device 61 to transfer the booklet. It is configured to couple the conveyor extension unit 62 to the device 61. The booklet transfer device 61 and the conveyor extension unit 62 are separated from each other for convenience of transportation and storage, and both may be integrated.

  As shown in FIG. 3, the upper surface of the booklet transfer device 61 is an inclined table portion 63 having the same inclination angle as the fixed conveyor portion 43 of the discharge mechanism portion 41 of the bookbinding machine 1, and the lower side of the inclined table portion 63 The edge faces the wall 64 that rises vertically. A screw conveyor shaft 65 is arranged under the lower edge of the inclined table portion 63 over the entire width of the inclined table portion 63, and the upper portion of the screw conveyor shaft 65 passes through a gap between the inclined table portion 63 and the wall portion 64. It is exposed upward. As shown in FIG. 4, the left end of the screw conveyor shaft 65 is connected via a power transmission means such as a conveyor drive motor 66 and an endless belt 67, and the screw conveyor shaft 65 is engaged with the screw conveyor shaft 65. It is driven to rotate in the direction of rotation for conveying leftward.

  The conveyor extension unit 62 has an inclined table portion 68 having a width that is longer than the inclined table portion 63 of the booklet transfer device 61. Like the inclined table portion 63 of the booklet transfer device 61, the wall portion 69 and the screw conveyor shaft 70 are provided. Is provided.

  FIG. 6 shows the conveyor shaft coupling of the booklet transfer device 61 and the conveyor extension unit 62. In (a), the right end of the screw conveyor shaft 65 of the booklet transfer device 61 and the left end of the screw conveyor shaft 70 of the conveyor extension unit 62 are opposed to each other. The right end of the screw conveyor shaft 65 of the booklet transfer device 61 and the left end of the screw conveyor shaft 70 of the conveyor extension unit 62 are each formed to have a small diameter, and the right end small diameter portion of the screw conveyor shaft 65 of the booklet transfer device 61 has both sides. It is formed in a flat plate shape cut flat, and a slide sleeve 72 is mounted on the flat plate portion 71. A cylindrical connecting shaft 73 is formed at the tip of the slide sleeve 72, and the tip of the connecting shaft 73 is cut obliquely. The tip of the small diameter connecting shaft 74 formed at the left end of the screw conveyor shaft 70 of the conveyor extension unit 62 is cut obliquely in the same manner as the connecting shaft 73 of the slide sleeve 72 on the booklet transport device 61 side. The sleeve 75 is covered and fixed, and the connecting shaft 74 is retracted into the sleeve 75.

  FIG. 6B is an assembly view of the joint portion on the booklet transport device 61 side, and a pin hole 76 is formed in the flat plate portion 71 of the screw conveyor shaft 65. A square hole 77 into which the flat plate portion 71 is fitted is formed in the slide sleeve 72, and a long guide groove 78 is formed through the square hole 77 to the both side surfaces and extending in the axial direction. Covering the flat plate portion 71 with the compression coil spring 79 and further covering the slide sleeve 72, and inserting the pin 80 into the pin hole 76 of the flat plate portion 71 through the guide groove 78, the slide sleeve 72 is attached to the flat plate portion 71. ), The slide sleeve 72 is maintained in the extended state by the spring force of the compression coil spring 79.

  In order to connect the booklet transfer device 61 and the conveyor extension unit 62, the screw conveyor shafts 65 and 70 are abutted with each other, and the connecting shaft 73 of the slide sleeve 72 on the booklet transfer device 61 side is connected to the sleeve 75 on the conveyor extension unit 62 side. When inserted, the tip of the connecting shaft 73 of the slide sleeve 72 and the tip of the connecting shaft 74 on the conveyor extension unit 62 side come into contact with each other, and the two screw conveyor shafts 65 and 70 are connected to transmit power. Further, the error in the length of the two screw conveyor shafts 65 and 70 is absorbed by the slide sleeve 72 sliding in the axial direction.

  When connecting the booklet transfer device 61 and the conveyor extension unit 62, the rotational angles of the two screw conveyor shafts 65 and 70 are not always rotationally symmetric with a difference of 180 degrees as shown in FIG. 6 (a). However, when the rotation angle is deviated, the slide sleeve 72 is pushed and pushed into the connecting shaft 74 on the conveyor extension unit 62 side, and when the screw conveyor shaft 65 starts rotating, the spring force of the compression coil spring 79 causes The slide sleeve 72 expands and converges to a correct connection state in which the inclined surfaces of both the connection shafts 73 and 74 are in close contact with each other. That is, unlike claw joints and spline joints, it is not necessary to match the rotation angles of both shafts during connection, and the connection is extremely simple.

  As shown in FIGS. 3 and 4, the booklet transfer device 61 and the conveyor extension unit 62 have a plurality of pressing rollers 81 that are in contact with or approaching the upper surfaces of the screw conveyor shafts 65 and 70, respectively, spaced apart in the longitudinal direction. (The illustration is omitted in FIG. 5). As shown in FIG. 7, the presser roller 81 prevents the ring binder R from being lifted and prevents the screw conveyor shafts 65 and 70 from being disengaged when the booklet B with the ring binder R is conveyed. In order to ensure the conveyance.

  As shown in FIGS. 3 to 5, the lower half of the inclined table portion 63 of the booklet transport device 61 is provided with a lower opening door 82 that opens downward with the upper and lower intermediate portions of the inclined surface as a fulcrum. The lower opening door 82 is supported in a closed state by a latch lever (not shown) that receives the left end of the lower opening door 82 on the lower surface of the inclined table portion 63, and is coaxial with the latch lever on the lower surface on the inclined table portion 63. A latch opening / closing lever 83 fixed to is disposed.

  The latch lever is biased to a position to close the lower opening door 82 by a spring, and the booklet B on which the ring binder is mounted is sent to the left (front) on the booklet transfer device 62, and the left end portion thereof is shown in FIG. When the upper latch opening / closing lever 83 shown in FIG. 5 is pushed to the left, the lower latch lever is released from the lower opening door 82, and as shown in FIG. 3, the lower opening door 82 is rotated downward to open downward. The part where the door 82 was located is opened, and the booklet B falls to the bucket 84 below. Although not shown, a crank arm that is rotationally driven by the conveyor drive motor 66 is disposed below the lower opening door 82, and the lower opening door 82 that opens downward is moved to the closed position by the rotating crank arm. When the latch lever is pushed up and returned to the closed position, the latch lever engages with the lower surface of the lower door 82, and the lower door is held in the closed position.

  When assembling the booklet transfer device 61 to the bookbinding machine 1, the door 5 of the bookbinding machine 1 is opened or removed, and the conveyor extension unit is placed on the fixed conveyor section 43 of the bookbinding machine discharge mechanism 41 shown in FIG. Insert the right end of 62. As a result, the booklet B sent out by the swing type conveyor unit 42 of the discharge mechanism unit 41 to the upper left falls on the right end of the conveyor extension unit 62. The booklet B in which the ring binder is mounted in the bookbinding machine 1 falls onto the conveyor extension unit 62 with the ring binder mounting portion behind, and the ring of the ring binder meshes with the screw conveyor shaft 70 of the conveyor extension unit 62. As the screw conveyor shaft 70 rotates, it is fed to the left.

  Then, the booklet B is transferred onto the booklet transfer device 61, and when the left end of the booklet B pushes the latch opening / closing lever 83 to the left as described above, the lower opening door 82 opens downward, and the booklet B is shown in FIG. Drop into bucket 84 shown. Then, the lower opening door 82 is returned to the closed position by the crank arm described above, and is dropped into the bucket 84 each time the next booklet B is sent onto the booklet transfer device 61. In this way, the bookbinding process can be continued until the booklet B is full in the bucket 84. Further, if the booklet B is taken out from the bucket 84 at any time during operation, the bookbinding operation can be continued without limitation.

  The screw conveyor shafts 65 and 70 may be driven at all times when the bookbinding machine 1 is operated, and it is started in accordance with the start timing of the discharge mechanism 41 of the bookbinding machine 1, and is driven at a predetermined rotational speed. It may be controlled so that it stops after being driven (at least the number of rotations until the booklet B reaches the position of the lower opening door 82 and drops) and enters a standby state.

  FIG. 8 shows another embodiment of the conveyor mechanism, in which a screw conveyor shaft 85 is arranged above the ring binder R binding the booklet B instead of the pressing roller 81 described above. 85 and the lower screw conveyor shafts 65 and 70 as in the first embodiment are synchronously driven by a power transmission mechanism (not shown) such as a gear or a timing belt. Since the booklet B is sent by sandwiching the ring binder R of the booklet B on the inclined table parts 63, 68 from above and below by the pair of screw conveyor shafts 65, 70, 85, the ring binder R is detached from the screw conveyor shafts 65, 70, 85. The booklet movement is stable.

  The present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and it is natural that the present invention extends to those modifications.

The bookbinding machine is shown, (a) is a plan view, (b) is a left side view, (c) is a front view, and (d) is a right side view. FIG. 2 is a front sectional view of the bookbinding machine of FIG. The front view of the bookbinding machine which attached the booklet transfer apparatus of this invention. The right view of the bookbinding machine which attached the booklet transfer apparatus of this invention. The top view of the bookbinding machine which attached the booklet transfer apparatus of this invention. (a) is a front view which shows the shaft coupling of a booklet transfer apparatus and a conveyor extension unit, (b) is an assembly drawing of the shaft coupling of a booklet transfer apparatus. FIG. 3 is a side view showing the arrangement of pressing rollers in the first embodiment. The side view which shows arrangement | positioning of the screw conveyor axis | shaft in Example 2. FIG.

Explanation of symbols

1 Binding machine
33 Punch unit
36 Paper alignment section
37 Binder installation unit
41 Discharge mechanism
42 Swing type conveyor
43 Fixed type conveyor
44 Stocker section
61 Booklet transfer device
62 Conveyor extension unit
63 Tilting table section
64 walls
65 Screw conveyor shaft
66 Conveyor drive motor
67 Endless Belt
68 Tilt table section
69 Wall
70 Screw conveyor shaft
71 Flat part
72 Slide sleeve
73 Connecting shaft
74 Connecting shaft
75 sleeve
76 pin hole
77 square holes
78 Guide groove
79 Compression coil spring
80 pin
81 Holding roller
82 Lower door
83 Latch opening / closing lever
84 buckets
85 Screw conveyor shaft
B Booklet
R ring binder

Claims (6)

  The printed material on the paper tray provided in the bookbinding machine or the printed material sent from the copying machine to the bookbinding machine is taken, and the ring binder mounting process or punching and ring binder mounting process is performed on the printed material for one book. A booklet transfer device connected to a bookbinding machine, a table portion extending from the inside of the bookbinding machine to the outside, and a screw conveyor shaft arranged along a longitudinal edge of the table portion and engaged with a ring binder of the booklet The booklet after the bookbinding process is received in the bookbinding machine, and the rotating screw conveyor shaft is engaged with the booklet ring binder to transfer the booklet to the end of the table unit. Booklet transfer device.   A lower opening door is provided at the terminal portion of the table portion, the lower opening door is held in a closed position by a latch mechanism, a latch opening / closing lever is provided on the upper surface of the table portion, and the booklet conveyed to the terminal portion of the table portion is By pressing the latch opening / closing lever, the lower opening door opens and the booklet is formed to drop into the lower booklet storage part, and the lower opening door that has been rotated to the open position is returned to the closed position and latched automatically. The booklet transfer device for a bookbinding machine according to claim 1, further comprising a mechanism.   2. The booklet transfer device for a bookbinding machine according to claim 1, wherein the table portion of the booklet transfer device is in a posture in which the screw conveyor shaft side is inclined downward from the other side.   A plurality of pressing rollers are arranged in series on the screw conveyor shaft along the axial direction of the screw conveyor shaft, and the booklet ring binder meshing with the screw conveyor shaft is pressed from above by the plurality of pressing rollers. The booklet transfer device for a bookbinding machine according to claim 1.   A pair of screw conveyor shafts are arranged in parallel vertically along one edge in the longitudinal direction of the table portion, and provided with a drive mechanism for synchronously rotating the pair of screw conveyor shafts. 2. The booklet transfer device for a bookbinding machine according to claim 1, wherein the booklet is transferred so as to be sandwiched from above and below by a screw conveyor shaft. 2. The booklet of the bookbinding machine according to claim 1, wherein the table portion of the booklet transfer device and the screw conveyor shaft are formed by dividing in a longitudinal direction, and a joint is provided on the divided screw conveyor shaft so as to be connectable / separable to each other. Transfer device.

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