JPH04269594A - Paper feed device and gathering device - Google Patents

Abstract

PURPOSE:To make it possible to adjust working timing of each member in a paper feed device and working timing between the paper feed device and an accumulating conveyor in a gathering device. CONSTITUTION:An opening drum 8 and a lap drum 10 are driven by servo motors 21 and 22 so as to rotate synchronizing with a feeder drum 5 and speeds within one rotation of the drums are changed so as to adjust working timing of grippers 7 and 9 to be operated by interlocking with the rotations of the drums 8 and 10. Also, a phase control is performed between a motor 20 for driving the feeder drum 5 of a paper feed device 17 and a drive motor of an accumulating conveyor 11, so that working timing between the paper feed device and the accumulating conveyor is adjusted.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collating device used in a bookbinding process and a paper feeding device installed in the collating device.

0002

[Prior Art] In the bookbinding process, a collation operation is performed in which a plurality of different signatures are stacked in a predetermined order.There are two methods of collation: one is the saddle stitching method in which the signatures are opened and stacked, and the other is the saddle stitching method in which the signatures are opened and stacked. There is a flat binding method that simply stacks. A collating device that performs saddle-stitching method usually has multiple sheet feeding devices arranged along a collection conveyor called a gathering chain, and each sheet feeding device opens one copy of the signature and runs it. The stacking conveyor is configured to stack the plurality of signatures by aligning them while pushing them with pieces.

As shown in FIG. 5, the paper feeding device used here includes a feed section 2 on which a stack of a large number of signatures 1 is placed, a sucker 3 that pulls out one end of the lowest signature 1, and a pair of grippers. 4a, 4b, a stopper 6, an opening drum 8 with a gripper 7 and a vacuum port (not shown), a lap drum 10 with a gripper 9, etc., and has a constant pitch. The conveyor 11 is arranged above an accumulation conveyor 11 having a piece (not shown). The accumulation conveyor 11 and the drums 5, 8, and 10 are driven by a line shaft (not shown) connected to a drive source, and run and rotate mechanically in synchronization. The sucker 3 and the grippers 4a, 4b are operated in synchronization with the rotation of the feeder drum 5 by a cam mechanism (not shown), and the grippers 7, 9 are operated in synchronization with the rotation of the feeder drum 5 by a cam mechanism (not shown). It operates in synchronization with the rotation of the drum 8 and lap drum 10.

The paper feeding device having the above structure performs a paper feeding operation as follows. That is, the drums 5, 8, and 10 are rotating in the directions indicated by arrows A, B, and C, respectively, and the soccer drums 3
When the user pulls out the leading edge of the signature, the gripper 4a or 4b of the feeder drum 5 grips the leading edge of the signature, and the rotation of the feeder drum 5 pulls out the signature 1 from the feed section 2, and the signature 1 hits the stopper 6. Just before the collision, the gripper 4a or 4b releases its grip on the signature. signature 1
When the signature 1 falls after hitting the stopper 6, the gripper 9 of the lap drum 10 grips the long end of the signature 1, and then the vacuum port of the opening drum 8 sucks the short end of the signature 1. The gripper 7 grips the lower end of the signature 1 and opens the signature 1 by rotating the wrap drum 10 and the opening drum 8. Then gripper 7
, 9 releases the signature 1, the signature 1 falls downward and is placed on the accumulation conveyor 11 running underneath it at a position immediately in front of the piece.

[0005] While the stacking conveyor 11 passes under a plurality of paper feeders, signatures are placed one after another on top of them, and the stacking conveyor 11 moves while pushing the signatures with pieces. , a predetermined number of signatures are stacked and aligned. Collation is performed in this way.

[0006] In addition, a collating device that performs side-stitching method has multiple sheet feeding devices arranged along the stacking conveyor, and each sheet feeding device closes one copy of the signature. In this state, the sheets are fed onto a running accumulating conveyor, and the accumulating conveyor is configured to stack the plurality of signatures by aligning them while pushing them with pieces. However, since the sheet feeding device used here does not require opening the signatures, it is similar to the sheet feeding device for saddle stitching shown in Figure 5 without the opening drum and wrap drum, and is similar to the sheet feeding device for saddle stitching shown in Figure 5, without the opening drum and wrap drum. A feeder drum pulls out signatures one by one from the stack and sends them onto a collection conveyor.

[0007]

However, with this conventional configuration, there is a problem in that collation failures may occur when the operating speed is changed or the paper thickness or paper quality of the signatures is changed. That is, in the sheet feeding device used in a saddle-stitching collating device, depending on the operating conditions, the opening drum and the wrap drum may not be able to open the signatures, making it impossible to properly collate them. Also, when the signatures sent out by the paper feeding device are placed on the running accumulating conveyor,
Sometimes the pieces would land on the pieces on the collection conveyor, making it impossible to line them up. This latter problem has occurred not only in the case of the saddle stitching method but also in collating devices of the side stitching method.

These problems arise because the accumulating conveyor and each drum are mechanically synchronized, and the suckers and grippers are operated in synchronization with each drum. In other words, in the conventional configuration, the relative operating timing of the sucker and each gripper within one cycle of feeding signatures is always constant regardless of the operating speed of the machine, but in order to achieve good collation, The optimal timing of operation varies depending on operating conditions, and therefore, even if the timing is good under certain operating conditions, the timing becomes inappropriate when the operating conditions are changed.

[0009] Therefore, in order to always perform good collation, it may be possible to change the operation timing of the sucker or gripper depending on the operating conditions, but in conventional devices, in order to change the operation timing, it is necessary to stop the machine. Then, the cam mechanism must be replaced or its position changed, resulting in a drawback that extremely troublesome adjustment work is required.

[0010] The first invention of the present application was made in view of such conventional problems, and in a sheet feeding device of the type that opens and feeds signatures, the operation timing of the gripper can be easily changed, and the operation timing can be changed easily. It is an object of the present invention to provide a paper feed device for a collating device that can always open signatures well and feed them to a collection conveyor even when conditions are changed.

[0011] The second invention of the present application makes it possible to easily adjust the timing at which the signatures are dropped from the paper feeder onto the accumulating conveyor, and even if the operating conditions are changed, the signatures are always dropped onto the accumulating conveyor at the predetermined timing. The purpose of the present invention is to provide a collating device that can be mounted on a machine.

0012

[Means for Solving the Problems] In order to solve the above-mentioned problems, the first invention of the present application has a feeder drum, an opening drum, and a lap drum, and the collection conveyor of the collating device carries the signatures one by one. In a paper feeding device that opens and feeds sheets one by one, these drums are not mechanically driven in synchronization, but at least two drive sources are used, one of which is a servo motor. Furthermore, the servo motor is controlled by a control device so that the drum connected to the servo motor rotates in synchronization with the rotation of the drum driven by another drive source, but the speed changes during one rotation. The configuration is as follows.

For example, when the feeder drum is driven by a suitable drive source (not particularly limited), the lap drum is configured to be driven by a servo motor, and the servo motor is connected to the rotation of the feeder drum by the lap drum. Although they rotate synchronously, the speed is controlled so that the speed changes within one rotation of the lap drum.

[0014]

[Operation] With this configuration, the two drums in the paper feeding device, for example, the feeder drum and the lap drum, rotate synchronously as a whole, but the speeds of both change within one cycle. The operation timing of the gripper, which operates in synchronization with the rotation of these drums, changes. Thus, by varying the speed variation pattern of the servo motor by the control device, the relative timing of the actuation of the grippers respectively actuated by the two drums can be varied.

[0015] When carrying out the first invention of the present application, in order to open the signatures well, the operation timing of the gripper provided on the opening drum and the operation timing of the gripper provided on the lap drum are different from the operation timing of the gripper provided on the feeder drum. It is preferable to adjust the timing of operation of the gripper. For this reason, it is preferable to connect a servo motor to each of the opening drum and the lap drum so that they are driven separately from the feeder drum, and to control the servo motor in synchronization with the rotation of the feeder drum. . In this case, the drive source of the feeder drum is not particularly limited, and for example, the drive source of the collection conveyor of the collating device may be used, or even a motor synchronized with the drive source of the collection conveyor may be used. good. In addition, since the operating timing of the gripper installed on the opening drum and the operating timing of the gripper installed on the lap drum do not need to be adjusted much even if the operating conditions change, it is possible to use an alternative to providing servo motors for the opening drum and lap drum, respectively. Alternatively, both may be configured to be driven by a single servo motor. Conversely, a servo motor is connected to the feeder drum, the opening drum and the lap drum are driven by another drive source, and the servo motor of the feeder drum is synchronized with the rotation of the opening drum or lap drum, but within one rotation of the drum. The speed may be controlled to be variable.

[0016]

[Means for Solving the Problems] In the second invention of the present application, there is provided a paper sheet comprising an accumulating conveyor and a plurality of paper feeding devices disposed along the conveyor for supplying signatures one copy onto the accumulating conveyor. In the combining device, the drive source of the paper feeder is separated from the drive source of the accumulation conveyor, and the two are configured to be driven by separate motors, and the conveyor drive motor and the paper feeder drive motor are further synchronized. A control device is provided for driving the stacking conveyor and controlling the phase of the sheet feeding device.

The sheet feeding device used here may be one for flat stitching, which simply feeds the signatures in a closed state, or one for saddle stitching, which feeds the signatures in an open state. When using a sheet feeding device for saddle stitching, it is preferable to use the sheet feeding device according to the first invention of the present application described above. In addition,
When using the paper feeding device according to the first invention of the present application, a plurality of motors are used as motors for driving the paper feeding device, but it is sufficient to drive one of them in synchronization with the conveyor driving motor. It is usually preferred to synchronize the drive motor connected to the feeder drum with the conveyor drive motor.

[0018]

[Operation] In the collating device of the second invention of the present application having the above configuration, the phase of the stacking conveyor and the paper feeding device can be controlled by the control device, so by adjusting the phase to a suitable one according to the operating conditions, The timing of ejecting the signatures by the paper feeder and the timing of arrival of the pieces on the stacking and conveying conveyor can be adjusted, and the discharged signatures can be placed on the stacking and conveying conveyor at a position immediately in front of the pieces.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in more detail below using examples shown in the drawings. FIG. 1 is a perspective view schematically showing an embodiment in which the first and second inventions of the present application are applied to a collating device for saddle stitching, and FIG. 2 is a schematic side view of a paper feeding device used in the collating device. Components that are the same as those in the conventional example shown in FIG. 5 are denoted by the same reference numerals. In FIGS. 1 and 2, reference numeral 11 denotes a gathering chain, that is, an accumulation conveyor, which has a large number of pieces 12 attached at regular intervals. 14 is a conveyor drive motor that drives the accumulation conveyor 11;
Reference numeral 15 denotes an encoder attached to the drive section of the stacking conveyor 11, which outputs a signal related to the position of the frame 12 with respect to the sheet feeding device.

Reference numeral 17 denotes a paper feeding device disposed along the stacking and conveying conveyor 11, which, like the conventional paper feeding device shown in FIG. a feeder drum 5 equipped with a pair of grippers 4a and 4b, an opening drum 8 equipped with a stopper 6, a gripper 7 and a vacuum port (not shown), and a gripper 9. It has a lap drum 10 etc. equipped with. The sucker 3 and the gripper 4 are operated in synchronization with the rotation of the feeder drum 5 by a cam mechanism (not shown). Furthermore, the grippers 7 and 9 operate in synchronization with the rotation of the opening drum 8 and the lap drum 10 by a cam mechanism (not shown), respectively, and the intermittent application of vacuum to the vacuum port of the opening drum 8 also controls the rotation of the opening drum 8. It is now synchronized with. However, unlike the conventional drums, each drum 5, 8, 10 is connected to a servo motor 20, 21, 22, and is configured to be rotated independently. Also,
An encoder 24 is connected to the feeder drum 5 and outputs a signal regarding the rotational angular position of the feeder drum 5. 26 is a conveyor drive motor 14
, a control device that controls each servo motor 20, 21, 22, etc., and its functions will be described later. In addition, servo motor 2
0, 21, and 22 may be provided in each paper feeding device 17, respectively, or may be common to a plurality of paper feeding devices 17, and drive is transmitted to the corresponding drum of each paper feeding device by a line shaft. It's okay.

Next, the operation of the collating device using the paper feeding device configured as described above will be explained. The accumulation conveyor 11 is driven by a conveyor drive motor 14 and travels in the direction of arrow D.
are driven by servo motors 20, 21, and 22, respectively, and rotate in the directions indicated by arrows A, B, and C. Here, the conveyor drive motor 14 is rotating at a constant speed, and therefore the collection conveyor 11 is running at a constant speed. The servo motor 20 that drives the feeder drum 5 of the paper feeding device 17 uses a signal from the encoder 15 that detects the traveling position of the pieces 12 on the accumulation conveyor 11 as a reference, and controls the control device 26 so as to synchronize with the traveling of the pieces 12. controlled by. The synchronization between the piece 12 and the servo motor 20 is determined so that the feeder drum 5 rotates once while the piece 12 moves by two pitches. The speed does not need to be constant and completely synchronized with the movement of the pieces 12, and may be changed as necessary. The control device 26 can store a plurality of speed patterns of the servo motor 20 during one rotation of the feeder drum 5, and has a function of controlling the servo motor 20 according to the speed patterns. For the sake of explanation, it is now assumed that the control device 26 selects a constant speed speed pattern and rotates the servo motor 20 at a constant speed. Furthermore, this control device 26 also has a function of controlling the phase of the servo motor that drives the feeder drum 5 with respect to the running of the collection conveyor 11.

Opening drum 8 and lap drum 1
The servo motors 21 and 22 that drive the feeder drum 5 are controlled by a control device 26 so as to be synchronized with the rotation of the feeder drum 5 based on a signal from an encoder 24 that detects the rotational position of the feeder drum 5. The rotation of the feeder drum 5 and the servo motors 21 and 22 are synchronized so that the opening drum 8 and the lap drum 10 rotate twice while the feeder drum 5 rotates once. 21, 22
The speed of opening drum 8 and lap drum 10
It is not necessary to completely synchronize with the rotational speed of the feeder drum 5 during one rotation of the feeder drum 5, and an appropriate speed pattern can be adopted. The control device 26 controls the servo motor 21 during one rotation of the opening drum 8 and the lap drum 10.
, 22, and controls the servo motors 21 and 22 according to the speed patterns. Now, for explanation, the control device 26
selects a constant speed pattern, and the servo motor 21
, 22 are also rotated at a constant speed.

FIG. 3(a) is an operation timing chart of each member, and the horizontal axis represents the rotation angle during one rotation of the feeder drum 5. Further, (b) in FIG. 3 shows the speeds of the servo motors 20, 21, and 22 at that time, which are constant in this embodiment. In FIGS. 2 and 3, the sucker 3 is rotated in conjunction with the rotation of the feeder drum 5.
sucks and holds the leading edge of the lowest signature in the stack of signatures and rotates downward to pull out the leading edge of the signature downward. Immediately after the sucker 3 stops sucking, the gripper 4a reaches the leading edge of the signature, closes and grips the leading edge of the signature, and transfers the signature 1 to the feed section by rotation of the feeder drum 5. Pull out from 2. At this time, the other gripper 4b is already gripping and conveying another signature. When the gripper 4b approaches the stopper 6, the gripper 4b opens and releases its grip on the signature. The signature collides with the stopper 6, stops traveling, and falls downward. At this time, the gripper 7 of the lap drum 10 is at the bottom end of the signature and grips the long side of the bottom end of the signature by closing there, and then the vacuum opening (not shown) of the opening drum 8 opens the fold. The shorter end of the signature 1 is sucked and the gripper 7 grips the lower end, and the signature 1 is opened by rotation of the wrap drum 10 and the opening drum 8. Thereafter, when the grippers 7 and 9 open and release the signature 1, the signature 1 falls downward and lands on the stacking conveyor 11 running underneath, just before the piece 12 (see Figure 1). get on. As described above, one section of signatures is fed onto the accumulating conveyor 11 by the first half rotation (0 to 180 degrees) of the feeder drum 5, and in the same manner, one part of the signature is fed onto the stacking conveyor 11 by the first half rotation (180 degrees to 180 degrees) of the feeder drum 5. 360 degrees) provides one additional signature. Note that in FIG. 3, "piece passing" indicates the timing at which the piece 12 passes the position where the rear end of the signature falling from the sheet feeding device 17 falls.

In this paper feeding operation, the operation timings (intervals p, q, r, etc.) of sucker 3, grippers 4a, 4b, gripper 7, gripper 9, piece passing, etc. are important, and certain operating conditions are determined in advance. The cam design has been determined to be optimal for. FIG. 3 shows a timing chart under these operating conditions, and under these operating conditions, good paper feeding and collation are performed. However, if operating conditions such as operating speed, quality and thickness of signature paper are changed, paper feeding may not be performed satisfactorily at this timing. For example, when the operating speed is set to a high speed, the grippers 7 and 9 may not be able to grip the lower ends of the signatures at this timing, and the signatures may fall without being opened. Therefore, in order to properly open and feed the signatures, it is necessary to advance the timing of closing the grippers 7 and 9 and to ensure sufficient operating time. Therefore, in that case, the control device 26 selects a speed pattern for the servo motors 21 and 22 that drive the opening drum 8 and the lap drum 10, respectively, to advance the timing of closing the grippers 7 and 9, and controls the servo motors according to that speed pattern. Controls motors 21 and 22. FIG. 4 shows a timing chart and servo motor speed in that case. In FIG. 4, the servo motor 20 that drives the feeder drum 5 rotates at a constant speed as in the case of FIG. 3, and therefore the operation timing of the sucker 3 and grippers 4a, 4b is the same as in FIG. However, as shown in FIG.
It fluctuates during rotation (while the feeder drum 5 rotates half a rotation), and as a result, the timing at which the grippers 7 and 9 are closed is brought forward. That is, the interval p from when the gripper 4b opens until the gripper 7 closes is shortened, and the interval q from when the gripper 7 closes until the gripper 9 closes is kept almost constant. As a result, the grippers 7 and 9 can reliably grip the lower ends of the signatures and open the signatures satisfactorily even though the paper feeder is operated at high speed. Although the servo motors 21 and 22 are changed in exactly the same speed pattern in FIG. 4, the speed patterns of both may be changed, and in that case, the interval q can be adjusted.

[0025] Furthermore, when operating the collating device at high speed,
After opening the grippers 7, 9 and releasing the signatures, it is necessary to increase the distance r until the pieces 12 reach underneath them. If this interval r is not made large, the signatures falling from the paper feeder 17 may land on the pieces 12, making it impossible to properly collate them. Therefore, the control device 26 controls the servo motor 20 that drives the feeder drum 5 to shift the phase between the feeder drum 5 and the accumulation conveyor 11. As a result, as shown in FIG. 4, the interval r becomes longer than in the case of FIG.

FIG. 4 merely illustrates one operating situation, and the paper feeding device and collating device of this embodiment can be operated in various situations. That is, by varying the phase between the accumulation conveyor 11 and the feeder drum 5, and by operating the servo motors 20, 21, and 22 at various speed patterns, the arrival timing of the pieces 12,
The operating timing of the sucker, each gripper, etc. can be changed, and the optimum operating timing can be obtained depending on operating conditions such as operating speed, signature paper thickness, and signature paper quality. Here, the control device 26 controls the operating conditions and the phase relationship between the stacking conveyor 11 and the sheet feeding device 17 suitable for the operating conditions, various speed patterns of each servo motor, and the operating conditions and the suitable speed patterns. It is equipped with a database of relationships, etc., and by inputting operating conditions into the control device 26, a desired speed pattern can be selected and operated. It is also possible to manually input or select an arbitrary speed pattern.

In the above embodiment, the feeder drum 5
, opening drum 8, and lap drum 10 are provided with servo motors 20, 21, and 22, respectively, but the paper feeding device of the present invention is not necessarily limited to this configuration. In the first invention of the present application, it is possible to adjust the operation timing between the grippers in the paper feeding device, but in this case, it is not necessarily necessary to adjust the operation timing between all the grippers, and it is possible to adjust the operation timing between the important grippers. Just adjust the activation timing. For example, in order to properly feed signatures, it is mainly necessary to adjust the operation timing of the grippers 7 and 9 with respect to the grippers 4a and 4b which are operated by the feeder drum. 8 and between the feeder drum 5 and the lap drum 10, the gripper operation timing may be adjustable.
The opening drum 8 and the lap drum 10 may be mechanically connected and driven by a common servo motor. Further, when the opening drum 8 and the lap drum 10 are driven by a servo motor so that the speed can be changed, the feeder drum 5 does not necessarily have to be able to change the speed.
It is not necessary to use a servo motor as the drive source, and a motor that drives at a constant speed may be used.

Furthermore, in the above embodiment, the feeder drum 5
The servo motors 21 and 22 connected to the opening drum 8 and the lap drum 10 are controlled based on the rotation of the opening drum 8 or the lap drum 10. It may also be configured to control. In that case,
The motor that drives the reference drum does not necessarily have to be a servo motor, and may be a motor that drives at a constant speed.

In the embodiment described above, the servo motor 20 for driving the feeder drum of the sheet feeding device 17 is controlled according to the position of the piece on the accumulating conveyor 11 while the sheet feeding device 17 is running. The configuration is such that the phase is adjusted and the interval r in FIG. 4 is adjusted. The means for performing this phase adjustment is not limited to the use of servo motors, and can be changed as appropriate. For example, synchronized oscillators may be provided on the drive shafts of the feeder drum and the accumulation conveyor, respectively, so that the phase difference between them becomes the desired value. Alternatively, a method may be adopted in which the feeder drum drive motor and the conveyor drive motor are controlled.

Although the embodiments in which the present invention is applied to the saddle stitching method have been described above, the second invention of the present application is applicable not only to the saddle stitching method but also to the side stitching method. Needless to say.

[0031]

As explained above, according to the first invention of the present application, in the paper feeding device which opens the signatures and supplies them to the stacking conveyor, at least one of the feeder drum, the opening drum, and the wrap drum Since the gripper is configured to be driven by a servo motor and can be changed in speed within one revolution by the control device, the timing of operation of the gripper operated by the drum can be adjusted. Therefore, in response to changes in the operating conditions of the sheet feeding device, the desired timing can be adjusted without stopping the machine and adjusting the cam mechanism, and it is possible to always provide a good supply of signatures.

Further, according to the second invention of the present application, since the phase can be adjusted between the stacking conveyor and the sheet feeding device, the timing at which the stacking conveyor reaches the frame of the signature ejection timing can be adjusted depending on the operating conditions. can be adjusted arbitrarily according to changes in
Signs can be stacked well on the stacking conveyor.

[Brief explanation of the drawing]

[Fig. 1] A schematic perspective view showing an embodiment in which the present invention is applied to a saddle-stitching collating device.

[Fig. 2] A schematic side view of the paper feeding device used in the above embodiment.

FIG. 3 illustrates the operation of the above embodiment under certain operating conditions; (a) is an operation timing chart of each member; (b) is a graph showing changes in the speed of the servo motor;

[Fig. 4] This is to explain the operation under operating conditions different from those in Fig. 3 of the above embodiment, (a) is an operation timing chart of each member, and (b) is a graph showing speed changes of the servo motor.

[Fig. 5] Schematic side view showing a conventional paper feeding device

[Explanation of symbols]

1. Signature 3 Soccer 4a, 4b Gripper 5 Feeder drum 6 Stopper 7 Gripper 8 Opening drum 9 Gripper 10 Lap drum 11 Accumulating conveyor 12 pieces 14 Conveyor drive motor 15 Encoder 17 Paper feeding device 20 Servo motor 21 Servo motor 22 Servo motor 24 Encoder 26 Control device

Claims (6)

[Claims] 1. A paper feeding device comprising a feeder drum, an opening drum, and a lap drum, and supplying signatures one copy at a time to a collection conveyor of a collating device, wherein the feeder drum, the opening drum, A servo motor different from the drive source of at least one other drum is connected as a drive source to at least one of the lap drums, and the servo motor is connected to the drum connected to the servo motor. A sheet feeding device for a collating device, characterized in that it is provided with a control device that rotates in synchronization with the rotation of one drum, but controls the speed to vary during one rotation. 2. The paper feeding device according to claim 1, wherein separate servo motors are connected to the opening drum and the wrap drum, and each servo motor rotates in synchronization with the rotation of the feeder drum. A sheet feeding device for a collating device, characterized in that the speed during one rotation is controlled by the control device so as to vary. 3. The paper feeding device according to claim 1, wherein a common servo motor is connected to the opening drum and the lap drum, and the servo motor rotates in synchronization with the rotation of the feeder drum. A sheet feeding device for a collating device, characterized in that the speed during rotation is controlled by the control device so as to vary. 4. An accumulating conveyor, a plurality of sheet feeding devices disposed along the accumulating conveyor and supplying signatures one copy at a time onto the accumulating conveyor, and a conveyor driving motor for driving the accumulating conveyor; A paper feeding device driving motor that drives the paper feeding device, and control for driving the paper feeding device driving motor in synchronization with the conveyor driving motor and controlling the phase between the accumulation conveyor and the paper feeding device. A collating device characterized by having a device. 5. The collating device according to claim 4, wherein the paper feeding device is the paper feeding device according to claim 2 or 3,
A collating device characterized in that a motor connected to the feeder drum is configured to be driven in synchronization with the conveyor driving motor. 6. The collating device according to claim 5, wherein the drive motor connected to the feeder drum is a servo motor.