JP2594520B2 - Printing book extracting method and apparatus - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method and an apparatus for extracting a part of a booklet from a continuous booklet transfer row such as a delivery unit for discharging a booklet from a rotary printing press. .

[Conventional technology]

In rotary printing presses, etc., the printing paper after printing is cut,
If necessary, the book is folded and printed, and is discharged to the next process by the conveyor. Here, the prints conveyed by the conveyer are generally in a state in which the prints partially overlap each other, that is, a so-called scissors shape.

In the delivery section that discharges the printed book, it is necessary to remove the printed book of the defective part or the printed book for inspection from the continuously printed book in the form of a scissors. We are sampling.

[Problems to be solved by the invention]

However, in such a conventional method, an operator must be attached every time a printed book is extracted, which is a major bottleneck in unmanned operation of a printing machine or the like. As a workaround,
It is conceivable to install a commercially available extraction device, but for that purpose, it is necessary to significantly modify the book transfer line.
In addition, there is a problem that remodeling and installation cannot be performed when the space is small.

Also, among the commercially available extraction devices, those with relatively little modification of the booklet transfer line are used to temporarily restrain a part of the booklet being conveyed in a scissor-like manner from above or below. However, there is also a configuration in which the next printed book is discharged by completely separating (ie, separating) the printed book from the preceding printed book, and then switching the running path of the printed book. Some of these extraction devices require complicated devices that use a sensor or the like to detect the position of the printing press for the setting, and it is difficult to set the position reliably. There is also a problem that defects may occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and it is possible to reliably remove a booklet being conveyed in a tear-like manner without breaking it, and to easily apply it to an existing booklet transfer line. It is an object of the present invention to provide a method and an apparatus for extracting a printed book applicable to a printing machine.

[Means for solving the problem]

The first invention of the present application, which has been made to solve the above problems,
In a method for extracting a booklet which is continuously conveyed in the form of a pair by a conveyer conveyor, an arbitrary position is set at a position where it can engage with the leading end of the conveyed booklet and prevent the advancement of the booklet. By lowering the temporary stopper at the timing, stopping the advance of the printing plate that arrives thereafter, and lowering the rake claw to a predetermined position downstream of the temporary stopper after a predetermined time has elapsed after lowering the temporary stopper, The scooping pawl is positioned above the booklet passing under the temporary stopper so that the booklet is allowed to pass, but the subsequent booklet can be picked up from the transport conveyor. A stopper is lifted to allow the subsequent book to travel, and the scooping pawl picks up the subsequent book above the conveyor and discharges the book. How to the gist.

Further, the second invention of the present application relates to a non-operating position which is located above the transport conveyor and is not in contact with the book transported by the transport conveyor, and which engages with the leading end of the book transported by the transport conveyor to form the book. A temporary stopper capable of swinging about a fulcrum at an operating position capable of preventing forward movement, and a driving device coupled to the temporary stopper via an elastic member to move the temporary stopper between an operating position and a non-operating position; A non-operating position which is located above the conveyor and is not in contact with the book being conveyed by the conveyor, and an operating position which is downstream of the temporary stopper and which picks up the book conveyed by the conveyor from the conveyor. A rake claw movably provided, a driving device for moving the rake claw between an operative position and a non-operating position, and a discharger for discharging the printed book scooped up from the conveyor by the rake claw; A driving device for moving the rake claw to the operating position is activated after a predetermined time has elapsed after the driving device for moving the temporary stopper to the operative position, and the rake claw is moved to the operating position of the temporary stopper. The gist of the present invention is to provide a print book extracting apparatus characterized in that the print book extracting apparatus is configured to be lowered onto a print book passing below and to a position where the print book is allowed to pass.

[Action]

In the normal case where the book is not removed, the temporary stopper and the rake claw are in a non-operation position where the transfer of the book by the transfer conveyor is not hindered.

When it is necessary to take out the prints while the conveyor is continuously transporting the prints, first, the temporary stopper engages with the leading edge of the prints being transported by the transport conveyor at an arbitrary timing. Is lowered to an operating position where it can be prevented from advancing, and the running book is passed thereunder, but is stopped when the leading edge of the following book arrives. Next, after a predetermined time has passed since the temporary stopper descended,
The rake pawl is lowered downstream of the temporary stopper to an operating position where the book can be picked up from the conveyor. The timing of lowering the rake claw with respect to the temporary stopper is set so that the tip of the rake claw is lowered to a position above a book passing under the temporary stopper and without catching the tip of the book. Thus, the booklet moving under the lowered rake claw can continue to move without any trouble. After that, the temporary stopper returns to the non-operation position, and the next printed book is conveyed by the conveyor, and when the leading end reaches the rake claw, the printed book is picked up from the conveyor by the rake claw and then discharged by the discharging means. Is done. Thus, the printing book on the conveyor is removed. After the desired book has been removed, the rake pawl moves from the active position to the inactive position, so that the book flows again on the conveyor.

In the above operation, the temporary stopper is lowered on the row of printing plates prior to the descent of the rake claw, and the printing paper reaching the temporary stopper is temporarily stopped by moving the rake claw on the running row of printing paper. This is to prevent the tip of the rake claw from catching the leading edge of the running book when it is lowered, causing troubles. Therefore, the stop time of the book by the temporary stopper is extremely short. May not stop the printed book at all (the case where the leading edge of the subsequent printed sheet does not reach the temporary stopper before the temporary stopper is lowered and then the temporary stopper is raised). For this reason, unlike the conventional case where the book is stopped for a relatively long time and the preceding book is cut off completely, the number of stopped prints is small. The structure may be very simple. In addition, since the temporary stopper is connected to the driving device via the elastic member, the temporary stopper can be elastically pressed onto the book, for example, when the thickness of the book is different or when the direction of the book being transported is changed. Can be dealt with without the need for adjustment work.

In the present invention, the rake claw is moved to an operating position for picking up a book on the conveyor and to a non-operating position not in contact with the book on the conveyor, but the inoperative position is not necessarily one position. The inoperative position of the rake before moving to the operating position (hereinafter referred to as the standby position) and the non-operating position of the rake when retracted from the operating position (hereinafter referred to as the retracted position) need to be different. You may.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a printing-sheet extracting apparatus according to an embodiment of the present invention.
FIG. 4 is a perspective view illustrating a state where the printer is installed in a printing press delivery unit.
In the figure, reference numeral 1 denotes a folding machine at the last part of the printing press, 2 denotes a transport conveyor for discharging a print book from the folder, and 3 denotes a print book conveyed on the transport conveyor 2 in a pinching state. Reference numeral 5 denotes a printing book extracting apparatus according to an embodiment of the present invention, which has frames 6 on both sides, and is mounted on the conveyor 2 by mounting the frames 6 on the frames of the conveyor 2. Each component described below is attached to the frame 6.

FIG. 2 is a side view schematically showing the print book extracting apparatus, and FIG. 3 is an enlarged side view of a part thereof. Reference numeral 7 denotes a drum rotatably provided above the conveyor 2, and reference numerals 8A and 8B denote belts, and reference numerals 9A, 9B, 9C and 9D denote pulleys around which the belt 8A or 8B is hung. The belt 8A is hung on the drum 7 and a pulley 9A, and the belt 8B is hung on the pulleys 9B, 9C, 9D and pressed against the belt 8A supported by the drum 7. The pulleys 9A and 9B are connected to a motor 10 (see FIG. 1) so that they can be rotated in the directions indicated by arrows. Thus,
When the motor 10 rotates, the belts 8A and 8B travel in the direction of arrow A, and can transport the printed book 3 picked up from the conveyor 2 by a rake as described later. The drum 7, the belts 8A and 8B, the pulleys 9A to 9D, and the like constitute discharging means for discharging the book from the rake claw.
Here, the peripheral speed of the pulleys 9A and 9B is set to be larger than the printing paper transport speed by the transport conveyor 2, and is set to be about six times in this embodiment.

Reference numeral 11 denotes a temporary stopper provided with a claw 11A at the tip, and is held so as to be able to swing around a pin 12 fixed to the frame 6. Reference numeral 13 denotes an air cylinder connected to the temporary stopper 11 so as to swing the temporary stopper 11, and reference numeral 14 denotes an elastic member interposed at a connection portion between the air cylinder 13 and the temporary stopper 11. As shown in FIG. 2, the air cylinder 13 transports the temporary stopper 11 between the non-operating position, which is separated from the print book 3 on the transport conveyor 2 and the claw 11A at the tip end, as shown in FIG. Riding on the book 3A being conveyed by the conveyor 2, the traveling of the book 3A is allowed, but it can be engaged with the leading end of the subsequently conveyed book 3B to prevent the book 3B from moving forward. It is for moving to the operating position. Elastic member
Reference numeral 14 denotes a printing sheet 3 in which the air cylinder 13 swings the temporary stopper 11 downward from the non-operation position to move the claw 11A at the leading end.
It is provided to eliminate the need to adjust the swing range according to the change in the thickness of the printing book 3A when placing it on A.

Reference numeral 15 denotes a rake claw, which is formed of a plate material having an arcuate cross section with a smoothly thinned lower end. 16 is a holding arm that can hold the rake claw 15 and swing around a fulcrum 17, and 18 is a holding arm 1
An air cylinder that swings 6. The rake claw 15 is held at the tip of the holding arm 16 so as to be swingable about the pin 22. An air cylinder 19 swings the rake claw 15 with respect to the holding arm 16. The air cylinder 19 pushes the rake claw 15 into the conveyor 2 as shown by the solid line in FIG.
From the standby position (non-operating position), which is located above the
As shown in FIG. 3, the leading end 15A rides on the printing book 3A on the conveyor downstream of the temporary stopper 11, and moves to a working position where the subsequently transferred printing book can be picked up from the conveyor. Is to make
The air cylinder 18 includes a holding arm 16 holding the rake claw 15.
Is pivoted counterclockwise from the position shown by the solid line in FIG.
This is for moving the rake claw 15 from the operating position to a retracted position (non-operating position) that has risen in the direction of the arc.
In this case, the rake claw 15 in the operating position corresponds to the conveyor 2
The upper print is guided to a nip portion (strictly speaking, a nip portion between the belts 8A and 8B) N between the drum 7 and the pulley 9D, and is disposed at a position where a slope is formed. Also,
The fulcrum 17 of the holding arm 16 holding the rake claw 15 is selected such that when the rake claw 15 is moved from the operating position to the retracted position by the air cylinder 18, the rake claw 15 moves along a path substantially coincident with its arc shape. Have been. With this configuration, at the end of the removal of the printed book, the rake claw 15 is moved from the state in which the book is picked up from the conveyor 2 to the retracted position, and the printed book guided by the rake claw is returned to the transfer conveyor again. There is an advantage that the movement of the printed book becomes smooth, and the disturbance of the printed book can be reduced.

In FIG. 2, reference numeral 20 denotes a shutter, and 21 denotes an air cylinder for moving the shutter 20 from a solid line position shown to a projecting position shown by a two-dot chain line. The shutter 20 is provided to return the printed book sent from the conveyor 2 to the nip portion N to the original conveyor 2 at the end of the extraction of the printed book. Reference numeral 23 denotes a printing press holding roller arranged upstream of the rake claw 15 in the operating position. The printing-sheet pressing roller 23 presses the printing book against the transport conveyor 2, increases the frictional force between the transport conveyor and the printing book, and when the temporary stopper 11 is operated, the printing book 3A ( (See FIG. 3) to prevent the frictional force with the book 3B stopped by the temporary stopper 11 from stopping, and to surely send the book to the nip N between the drum 7 and the pulley 9D. ing. The book holding roller 23 is used when the book is hard to be nipped at the nip portion N, such as when the book is strong and hard to bend along the rake claw.

In FIGS. 1 and 4, reference numeral 25 denotes a discharge conveyor arranged at a position for receiving a printed book discharged between the pulleys 9A and 9B, 2
6A and 26B are boxes for storing printed papers. At the end of the discharge conveyor 25, a movable plate 28 operated by an air cylinder 27 is provided, so that the printing book can be separated and dropped into the two boxes 26A and 26B depending on the position of the movable plate 28. It has become.

Next, the operation of the above-configured printing paper extracting apparatus will be described with reference to FIGS.
This will be described with reference to FIG. 5E.

FIG. 5A shows a normal state, in which the temporary stopper 11 is on standby at a non-operating position, which is separated from the printing book 3 being transferred by the transfer conveyor 2, and the rake claw 15 is positioned above the printing book 3. Waiting at the standby position close to the printed book. The shutter 20 is also at the standby position. The printing book 3 from the folding machine 1 is supplied on the conveyor 2 in the form of a pair, and is continuously sent out below the apparatus.

Now, when it is necessary to take out a part of the book due to poor printing on the printing press, or when it is necessary to remove a part of the book for inspection, as shown in Fig. 5B, The stopper 11 is temporarily lowered to the operating position by the air cylinder 13. In this operating position, the printing book 3A running under the hook 11A at the tip of the temporary stopper 11 is allowed to travel as it is, but the printing book 3B sent thereafter is caught by the hook.
This is a position where the temporary stop can be stopped by hooking at 11A. Therefore, while the temporary stopper 11 is descending, the leading edge of the printed book does not pass through the hook 11A of the temporary stopper 11. As shown in FIGS. 6A and 6B, for the booklet to be transported on the opposite side of the fold, that is, when the fore edge is conveyed in advance, the temporary stopper 11 is provided at the leading end 3a, 3b of the fore edge of the book. To stop the printed book.

After a predetermined period of time after the temporary stopper 11 has been lowered to the operating position, the rake claw 15 swings about the pin 22 by the air cylinder 19 and moves down to the operating position, and FIG. 3, FIG. 6A, FIG.
As shown in FIG. 6B, the tip 15A of the rake claw 15 rides on the running book 3A downstream of the claw 11A of the temporary stopper 11. Here, the lowering timing and lowering position of the rake claw 15 (the distance between the rake claw tip 15A and the temporary stopper tip 11A)
Is behind the leading edge of the booklet 3A (after the leading edge 3a of the booklet 3A, which is conveyed ahead of the fore edge as shown in FIGS. 6A and 6B). ， Rip nail 15 tip 15A
Is set to fall. As a result, when the rake claw 15 descends, the leading end 15A may hit the leading end of the running printing book 3A, or the leading edge may precede the leading edge of the printing book 3A in the leading edge (between the leading ends 3a and 3b) of the printing book 3A. It is prevented from being inserted and causing trouble in running of the printed book.

After a predetermined time from the lowering of the temporary stopper 11,
It rises as shown in the figure. As a result, the following printed book 3B
Is moved by the conveyor 2 toward the operating position of the tip 15A of the rake claw, picked up by the rake claw 15, and sent to the nip N between the drum 7 and the pulley 9D. Further, the printing book subsequent to the printing book 3B is also picked up by the rake claw 15 and sent to the nip portion N one after another. In addition, the book 3 at this time
Is moved by the conveyor 2, and the rake claw 15 forms a slope to scoop up the printed book. Therefore, it is desirable that the friction between the rake claw 15 and the printed book be small. In the example, an arc is formed so that the gradient gradually increases, and the tip is further smoothly thinned. In addition, when the feeding force of the book by the conveyor 2 is insufficient, the book holding roller 23 (see FIG. 2) may be operated.

The printing book 3 picked up by the rake claws 15 is conveyed by being sandwiched between the belts 8A and 8B wrapped around the drum 7, and sent out onto the discharge conveyor 25 one after another. Here, as described above, the speed of the pulleys 9A and 9B for driving the belts 8A and 8B is considerably higher (about 6 times in the embodiment) than the conveying speed of the conveying conveyor 2, so that the sheet is sent in a stab. At the time when the printed sheets are conveyed with the whole being sandwiched between the belts 8A and 8B, there are almost no overlapping portions, so that the printed sheets are successfully sent out onto the discharge conveyor 25 one after another. Discharge conveyor 25
The upper plate is switched to the movable plate 28 at the end of the discharge conveyor 25 depending on whether it is a defective plate or a sample plate for inspection, and is accommodated in the box 26A or 26B.
As described above, the printed book on the conveyor 2 is extracted.

After the required number of printing sheets 3 have been extracted, the air cylinder 18 operates to raise the entire rake claw 15, and as shown in FIG. 5D, retreats to the retracted position above the lower end of the pulley 9D, and simultaneously releases the shutter. 20 protrude. As a result, the printing book 3C being pulled out from the conveyor 2 to the nip N between the drum 7 and the pulley 9D is pushed back onto the conveyor 2. Note that, without using the shutter 20, it is possible to return the printing book 3C toward the nip N to the transport conveyor 2 only by raising the rake claw 15, but it is possible to return the printing book 3C between the partially overlapping printing books. Rubbing, the subsequent prints can be
It is preferable to use the shutter 20 because the sheet may be sent to the nip N even after the rise of the shutter.

Thereafter, as shown in FIG. 5E, the shutter 20 is moved to the original non-operation position, and the rake pawl is returned to the original standby position by the air cylinders 19 and 18, and returns to the normal state.

In the above-described operation of removing the printed book, the number of discharges and the discharge position are set in advance by a digital switch (not shown) provided in the control box, and the density sensor of the web installed on the printing press, the printed matter inspection. It is configured to be automatically performed by an input signal from a device or the like (not shown) and an operation signal of the printing press, and to be able to be performed at any time and for any time by manually operating the operation panel. ing.

In the above embodiment, the rake claw 15 moves from the standby position to the operating position, then retracts to the retracted position, and then moves to the original standby position. Instead, the standby position and the retracted position are set to the same position. Is also good. FIG. 7 shows an embodiment in that case, in which a rake claw 15 is fixed to a holding arm 16. In the present embodiment, the rake claw 15 is moved from the non-operating position (standby position, retreat position) to the operating position by the clockwise swing of the holding arm 16, and the counterclockwise movement of the holding arm 16 is performed after the printing book is removed. By moving to the inoperative position by swinging in the direction, it is possible to extract a predetermined amount of printed sheets. This embodiment has a drawback that it is difficult to quickly move the rake claw 15 to the operation position at a predetermined timing due to a large stroke when the rake claw 15 is moved from the standby position to the operation position. There is an advantage that can be simplified.

Further, in the above embodiment, the print book extracted from the transport conveyor 2 by the print book extracting device 5 is transferred to the discharge conveyor 25.
Although the paper is ejected upward and housed in the boxes 26A and 26B, the apparatus for receiving the printed book discharged from the printed book extracting apparatus 5 can be appropriately changed. FIG. 8 shows an embodiment in which a booklet stocking device 30 capable of discriminating and printing small quantities of booklets is attached to a booklet extracting device 5 similar to the embodiment shown in FIG. . As shown in FIG. 9, the booklet stock apparatus 30 has left and right support frames 31, and the front end 31A of the support frame 31 is connected to the frame 6 of the booklet extracting apparatus 5.
(See FIG. 8).
Further, the booklet stock device 30 includes a support shaft 32 spanned between the two support frames 31, a connecting rod 33 located behind the support shaft 32 and forming a support surface of the booklet, and A plurality of bars 34 held in a shape, each of which can be pivoted between a book receiving position where each is substantially horizontal and a book scissor position pressed against the connecting rod 33, and each of the bars 34 A spring 35 urges the connecting rod 33 in the direction of pressing the printing book, that is, to the scissors position, a claw 36 for holding each bar at the printing book receiving position against the elastic force of the spring 35, and a claw 36 for each. It has a box 37 and the like in which solenoids for individually releasing the holding of the bars are incorporated. This book stock device 30
When the bar is received on the bar 34 at the book receiving position and the holding of the appropriate bar 34 by the claw 36 is released, the bar 34 turns and the book on the bar 34 is connected to the connecting rod 33. It can be stocked in between.

In this embodiment, too, the book-sheet extracting device 5 operates in the same manner as the embodiment shown in FIG.
To be discharged. Hereinafter, the book-stock operation by the book-stock apparatus 30 will be described.

In the initial state, the comb-shaped bar 34 held on the support shaft 32 is at the printing book receiving position where the whole is substantially horizontal. The book delivered from the book removing device 5 is supplied onto the bar 34. When the supply of the printed book extracted by one sampling onto the bar 34 is completed, two of the claws 36 pressing the tip of the bar 34 release the press by the solenoid (not shown), and By two bars 34
Is turned around the support shaft 32 by the spring 35 in the direction indicated by the arrow B, and the book is held between the connecting rod 33 and the stock. At the next sampling, the book is supplied onto the remaining bar 34 at the book receiving position, and then the two bars 34 are released and swiveled to the book scissor position.
Insert a new book on top of the previously stocked book and stock it. At this time, since the bar 34 is inserted between the previously stocked print book and the newly stocked print book, both print books can be distinguished.
Thereafter, the same operation is repeated to store the printed book.
Here, if the number of the bars 34 is set to 20, the sampling can be performed ten times. When the sampling of the predetermined number of times is completed, the stocked prints are manually removed, and the bar 34 is returned to the position held by the claws 36 to prepare for the next sampling.

Note that the above-mentioned sampling operation of the printing book by the printing-sheet extracting apparatus 5 and the printing-book stock apparatus 30 is also performed by previously setting the number of discharge copies and discharge locations by a digital switch (not shown) provided in the control box. The operation is automatically performed by an operation signal or the like, and can be performed at an arbitrary time and for an arbitrary time by manually operating an operation panel.

〔The invention's effect〕

As described above, according to the present invention, a temporary stopper is positioned at an arbitrarily timing at an operating position for a booklet conveyed in a pinching state on a conveyor to prevent the printhead from passing thereafter. However, the rake claw is moved downstream of the temporary stopper after a predetermined time elapses, and the temporary stopper is released. Therefore, when the rake claw is moved onto the printing book, the tip of the rake claw moves. The movement of the print book is not disturbed by hooking the leading end of the print book in the middle, and the print book that is subsequently conveyed can be scooped up with a rake claw from the conveyer and discharged by the discharge means. Thus, the present invention has the effect that an arbitrary number of copies can be extracted without disturbing the rows of printing sheets that are sent in a pinching state on the conveyor.

Further, as a device for carrying out the above-mentioned printing book removal, only a temporary stopper capable of stopping the printing book, a rake pawl and a discharging means for discharging the printed book picked up by the rake pawl are required. The temporary stopper may be of a simple structure, as long as it can stop the printing book for a very short time, unlike the case of the conventional setting. For this reason, the structure of the entire book removing apparatus is simple, the required space is small, and the apparatus can be installed in a narrow place. In addition, since the temporary stopper, the rake claw, the discharge means, and the like can be disposed above the transport conveyor, the temporary stopper, the rake claw, the discharge means, and the like can be easily installed on the existing book transport line. . In addition, by combining an automatic control device with the print book extracting device of the present invention,
Effects such as enabling unmanned operation of a printing machine and the like can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a printing book extracting apparatus according to an embodiment of the present invention is installed in a printing press delivery section, FIG. 2 is a schematic side view of the printing book extracting apparatus, and FIG. Fig. 4 is an enlarged side view, Fig. 4 is a perspective view showing a discharge conveyor and a bookcase storage box, Figs. 5A to 5E are schematic side views explaining the operation of the above-described booklet extracting apparatus, and Figs. 6A and 6B are FIG. 7 is a side view showing an example of a positional relationship between a temporary stopper, a rake claw and a printing book, FIG. 7 is a schematic side view showing another embodiment of the present invention, and FIG. 8 is a schematic perspective view showing another embodiment of the present invention. FIG. 9 and FIG. 9 are perspective views showing a printing book stock apparatus used in the apparatus shown in FIG. 1 ... folding machine, 2 ... conveyor, 3 ... printed book, 5 ...
Print-sheet removing device 6… Frame, 7… Drum, 8A, 8B… Belt 9A, 9B, 9C, 9D… Pulley, 10… Motor, 11… Temporary stopper 11A… Claw, 12… Pin, 13 ... Air cylinder, 14
... Elastic member 15 ... Rake claw, 16 ... Holding arm, 18 ... Air cylinder 19 ... Air cylinder, 20 ... Shutter, 21 ... Air cylinder 22 ... Pin, 23 ... 25 …… Discharge conveyor 30 …… Book stock device

Claims (6)

(57) [Claims] In a method for extracting a booklet which is continuously conveyed in a scissor-like manner by a conveyor, the booklet can be engaged with a leading edge of the conveyed booklet to prevent advancement of the booklet. The temporary stopper is lowered to the position at an arbitrary timing, and the advance of the printing plate reaching thereafter is prevented.
After a lapse of a predetermined time after lowering the temporary stopper,
By lowering the rake claw to a predetermined position downstream of the temporary stopper, the passing of the booklet is allowed on the booklet passing under the temporary stopper, but the subsequent booklet is transferred from the transport conveyor. Positioning the rake pawl so that it can be picked up, and then raising the temporary stopper to allow the subsequent printing book to travel, scooping the subsequent printing book above the conveyor by the rake pawl, and discharging. A method of extracting a printed book. 2. A non-operating position, which is located above the transport conveyor and is not in contact with the book transported by the transport conveyor, and engages with the leading end of the print transported by the transport conveyor to prevent advance of the print book. A temporary stopper capable of swinging about a fulcrum at an operating position, a driving device connected to the temporary stopper via an elastic member to move the temporary stopper between an operating position and a non-operating position, and the transport conveyor. A non-operating position, which is located above and is not in contact with a book being conveyed by the conveyor, and an operating position, which is located downstream of the temporary stopper, is an operating position for picking up the book conveyed by the conveyor from the conveyor. A rake claw, a driving device for moving the rake claw between an operating position and a non-operating position, and a discharge means for discharging a printed book scooped up from the conveyor by the rake claw; The driving device for moving the rake claw to the operating position is activated after a lapse of a predetermined time after the driving device for moving the temporary stopper to the operative position, and the rake claw is moved under the temporary stopper. A printing-sheet extracting apparatus characterized in that it is configured to be lowered onto a printing book and to a position where the printing book is allowed to pass. 3. The apparatus according to claim 2, wherein said rake claw is formed in an arc shape so as to scoop up the printing book smoothly, and a tip thereof is smoothly thinned. 4. The discharging means includes a drum disposed above a conveyor and configured to convey a printed book along an outer peripheral surface, wherein the rake claw is provided at a center of the drum. 4. The apparatus according to claim 2, wherein the holding device is held by a holding arm that swings. 5. A discharging means comprising a drum disposed above a conveyor and configured to convey a printed book along an outer peripheral surface, wherein the rake claw is provided at a center of the drum. 4. The printing-book removing apparatus according to claim 2, wherein the holding arm is swingably held around a rear end of the rake claw. 6. The printed book according to claim 2, wherein said discharging means discharges the printed book at a speed higher than a transfer speed by a transfer conveyor. Extraction device.