WO2006117930A1

WO2006117930A1 - Sheet material carrying device and printed sheet stacking device

Info

Publication number: WO2006117930A1
Application number: PCT/JP2006/304564
Authority: WO
Inventors: Toshiyuki Moriwaki; Kenji Mishima; Haruhiro Otsuka; Hitoshi Katsuragawa
Original assignee: Gunze Limited
Priority date: 2005-04-28
Filing date: 2006-03-09
Publication date: 2006-11-09
Also published as: JPWO2006117930A1; JP4757869B2

Abstract

A sheet material carrying device (2) capable of properly eliminating the discontinued portions of a sheet material produced in the sheet material such as a printed sheet overlappingly carried in a displaced state in a continuously carried direction. The sheet material carrying device comprises a carrying conveyor (6) capable of carrying the sheet material (W) in a horizontal direction and a push-up device (7). The push-up device comprises a push-up part (16) disposed midway in the carrying route of the carrying conveyor. The push-up part can partly or entirely move between the lower side of the carrying surface of the carrying conveyor or the surface thereof including the carrying surface and the upper side of the carrying surface. When the push-up part is moved to the upper side of the carrying surface, it is brought into contact with the lower surface of the sheet material on the carrying surface so that the upstream side of the sheet material in the carrying direction can be raised. Thus, the sheet material carrying device can carry the sheet material in an overlapped state displaced to the downstream side thereof in the carrying direction.

Description

Specification

Sheet material conveying apparatus and bookbinding apparatus

Technical field

TECHNICAL FIELD [0001] The present invention relates to a bookbinding apparatus for transporting and stacking sheet materials such as a printing book in a state where the stack is shifted downstream in the transporting direction.

Background art

[0002] A booklet printed on a rotary press (printed after being bound, etc.) is collected in a rectangular parallelepiped shape with its orientation aligned and four corners upright. A bookbinding apparatus that mechanically binds a bundle with a binding band is disclosed (Patent Document 1).

In the bookbinding apparatus, the stacked booklets are shifted to the upstream side in the transport direction, that is, the downstream side in the transport direction of each booklet overlaps the upstream side of the downstream booklet. In general (see FIG. 7), it is common to use a transport device for transporting the printing book.

[0003] Generally, in a conveying apparatus, a defective printing book or a damaged printing book is extracted from a printing book being conveyed, or a sample (specimen) is extracted to check a printing state or the like. When a printed book having a printing defect or the like is continuously conveyed and the printed book is continuously extracted, a discontinuous portion (gap in the conveying direction) is formed in a series of conveyed booklets. Since there is no overlap between the front and back of the interrupted part, it is difficult to regularly collect the booklet after the transport. Therefore, it is necessary to eliminate the portion where the overlap / break of the booklet is interrupted before collecting the booklet, and to return the booklet to the overlapped state having an appropriate deviation in the conveyance process.

[0004] FIG. 7 is a diagram of a break-off eliminating unit 100 provided in a conventional transport device.

In the disconnection elimination unit 100, the unloading end of the upstream conveyor 101 is provided at a position higher than the loading end of the downstream conveyor 102 at the connection portion between the upstream conveyor 101 and the downstream conveyor 102. The printed book W is transferred from the carry-out end of the upstream conveyor 101 onto the printed book W on the downstream conveyor 102 while maintaining an overlapping state.

[0005] The downstream conveyor 102 is a portion of the upstream conveyor 101 where the printed book W is interrupted.

Operation is stopped when (gap) is detected, and printing is carried by the upstream conveyor 101 The operation starts when the book W reaches the rear end of the printing book W on the conveyor 102 on the downstream side. In other words, the discontinuity canceling unit 100 operates the downstream conveyor 102 until the printing book W to be stacked on the upstream printing book W of the downstream conveyor 102 is conveyed by the upstream conveyor 101. Stop and wait for the part of the print book W to break.

Patent Document 1: Japanese Patent Laid-Open No. 2000-118511

Disclosure of the invention

Problems to be solved by the invention

[0006] In the discontinuity canceling unit 100 shown in FIG. 7, the printing book W is transferred from the upstream conveyor 101 to the downstream conveyor 102 by natural fall and overlapped with the downstream printing book W. Therefore, the booklet W that falls naturally is the surface of the booklet W that waits on the downstream conveyor 102 due to the resistance of the air layer between it and the inertia at the time of dropping. The amount of overlap between the printed books W is likely to be excessive due to sliding. In addition, when the friction between the transferred book W and the stacked book W is so great that the book W hardly slides, the stacking margin tends to be too small.

When the printing book W with variations in the degree of overlap is conveyed, the bundle of the printed printing book W that is easy to collect at the four corners in the stacking process is likely to be uneven in appearance.

[0007] In addition, the discontinuity eliminating unit 100 shown in FIG. 7 has the printing book W in the conveying device that conveys the printing book W in a state shifted to the opposite side to the direction in which the overlapping printing book W is conveyed. It is configured to eliminate the interrupted part. However, some printing book stacking devices are designed to stack the printing book w in a state shifted in the direction in which the overlapping printing book W is transported. In the case of a transporting device, it is not possible to eliminate the interrupted portion using the disconnection canceling unit 100.

[0008] The present invention has been made in view of the above circumstances, and when a sheet material such as a printing book is transported in an overlapping manner in a state of being shifted in the transporting direction, the continuously transported printing is performed. It is an object of the present invention to provide a sheet material conveying apparatus and a bookbinding apparatus equipped with the sheet material conveying apparatus that can appropriately eliminate the discontinuous portion generated in the sheet material.

Means for solving the problem In order to achieve the above object, the present invention has taken the following technical means.

That is, the sheet material conveying apparatus according to the present invention is a sheet material conveying apparatus that conveys the sheet material in a state where the overlap is shifted to the downstream side in the conveying direction, and is a conveying conveyor capable of conveying the sheet material in the horizontal direction. And a push-up device, the push-up device having a push-up portion arranged in the middle of the carrying path of the carrying conveyor, the push-up portion being below the carrying surface of the carrying conveyor or the above A part or all of the space between the surface including the conveying surface and the upper side of the conveying surface is movable, and contacts the lower surface of the sheet material on the conveying surface when moving above the conveying surface. It is configured to be able to lift the upstream side of the sheet material in the conveyance direction.

[0010] Another sheet material conveying apparatus according to the present invention is a sheet material conveying apparatus that conveys a sheet material in a state in which the overlap of the sheet material is shifted to the downstream side in the conveying direction, and is capable of conveying the sheet material in a horizontal direction. A lifting conveyer, a lifting device, and a pressing device, and the lifting device has a push-up portion disposed in the middle of the carrying path of the transfer conveyor, and the push-up portion of the transfer conveyor A part or all of the sheet material can be moved below the conveying surface or between the surface including the conveying surface and the upper surface of the conveying surface, and the sheet material on the conveying surface when moving above the conveying surface. The sheet material on the conveyance surface is arranged on the downstream side of the push-up portion in the conveyance path, and is configured to be capable of lifting at least the upstream side in the conveyance direction of the sheet material. In contact with the upper surface of the Having a pressing portion for pressing the downstream one preparative material downward.

[0011] Here, "is configured to be able to lift at least the upstream side in the conveyance direction of the sheet material"

In addition, both the case where only the upstream side in the conveyance direction of the sheet material is lifted and the case where the downstream side in the conveyance direction is lifted together with the flow direction improving sheet sheet conveyance direction are included.

[0012] In any of the sheet material conveying devices, the sheet material is conveyed by the upstream conveyor and the upstream conveyor that continuously conveys the sheet material to the conveying conveyor in a state where the overlap of the sheet material is shifted to the downstream side in the conveying direction. And a sensor for detecting the presence of a portion where the continuity of the material is interrupted.

[0013] In any of the sheet material conveyance devices, the push-up is performed by stopping the conveyance conveyor after a predetermined time from when the sensor detects the start of the portion where the continuity of the sheet material is interrupted. When the sensor detects the end of the portion where the sheet material is interrupted, the force is moved after a predetermined time to move the push-up portion below the conveying surface or the conveying surface. It has the control part which controls as follows.

[0014] Preferably, the push-up device has a rotation shaft below the transport surface, the rotation shaft is provided horizontally and perpendicular to the transport path, and the push-up portion has one end side The other end side is fixed to the rotating shaft and extends to the downstream side of the conveying path at a substantially right angle to the rotating shaft, and the push-up device is swung around the rotating shaft so that the push-up portion is The sheet material is configured to be able to lift the upstream side in the conveyance direction.

[0015] A bookbinding apparatus according to the present invention includes the sheet material conveying device of V deviation and an accumulating device that accumulates the sheet material continuously conveyed by the sheet material conveying device. The invention's effect

[0016] The sheet material conveying apparatus according to the present invention and the printing book stacking apparatus including the sheet material conveying apparatus are continuous when the sheet materials such as the printing book are conveyed in an overlapping manner in a state of being shifted in the conveying direction. Thus, it is possible to appropriately eliminate the discontinuous portion generated in the sheet material such as a printing book that is conveyed.

Brief Description of Drawings

FIG. 1 is a side view of a bookbinding apparatus according to the present invention.

FIG. 2 is a side view of the sheet material conveying device provided in the bookbinding apparatus.

FIG. 3 is a plan view of the sheet material conveying apparatus.

FIG. 4 is a side view for explaining the operation of the sheet material conveying apparatus.

FIG. 5 is a side view for explaining the operation of the sheet material conveying apparatus.

FIG. 6 is a side view for explaining the operation of the sheet material conveying apparatus.

[FIG. 7] FIG. 7 is a diagram of a break-off eliminating unit provided in a conventional transport device.

Explanation of symbols

[0018] 1 bookbinding device

2 Sheet material transport device

3 Integration device (integration unit) 5 Upstream conveyor

6 Conveyor (downstream conveyor)

7 Pushing device

8 Holding device

9 Sensor

16 Pusher

18 Rotating axis

26 Pressing part (pressing member)

W sheet material (print book)

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a side view of a bookbinding apparatus 1 according to the present invention, FIG. 2 is a side view of a sheet material conveying apparatus 2 provided in the bookbinding apparatus 1, and FIG. 3 is a plan view of the sheet material conveying apparatus 2. 4 and 6 are side views for explaining the operation of the sheet material conveying device 2. FIG.

In FIG. 1, the bookbinding apparatus 1 includes a sheet material conveying apparatus 2, an accumulating unit 3, and a control unit 4.

The sheet material conveying device 2 includes an upstream conveyor 5, a downstream conveyor 6, a lifting device 7, a pressing device 8, and a sensor 9.

The upstream conveyor 5 is a belt conveyor having one belt 10. The upstream conveyor 5 continuously prints the book W in a state where the book W is shifted to the downstream side in the conveying direction, that is, the upstream side of the downstream book W overlaps the downstream side of each book W. Is fed to the downstream conveyor 6.

In the following description, the “conveying direction” refers to the direction connecting the upstream and downstream of the flow of the printed book W being conveyed. Further, the upstream side and the downstream side in the transport direction may be referred to as “upstream side” and “downstream side”, respectively.

[0021] The downstream conveyor 6 is a belt conveyor having three belts 11a, l ib and 11c arranged at equal intervals. The downstream conveyor 6 is arranged on the downstream side in the conveyance direction of the printing book W with respect to the upstream conveyor 5. In addition, the downstream conveyor 6 is arranged so that its conveyance surface is on the extension line of the conveyance surface of the upstream conveyor 5 without having a step with respect to the conveyance surface of the upstream conveyor 5. Is done. The conveyance speed of the downstream conveyor 6 is set to be the same as the conveyance speed of the upstream conveyor 5.

[0022] As shown in FIGS. 2 and 3, the distance between the carry-out end 12 of the upstream conveyor 5 and the carry-in end 13 of the downstream conveyor 6 does not affect the conveyance of the sheet material W. A well-designed gap D for delivery is provided.

The upstream conveyor 5 and the downstream conveyor 6 are driven separately. The upstream conveyor 5 may not be driven by the belt 10 but may be driven by the conveying force of the supply device for the printing book W arranged on the upstream side thereof. The downstream conveyor 6 is driven in conjunction with the drum type conveying device 15. The driving of the downstream conveyor 6 will be described later together with the description of the drum type conveying device 15.

The push-up device 7 has a push-up portion 16 and a pneumatic cylinder 17 and is arranged in the middle of the conveyance path of the downstream conveyor 6.

The push-up portion 16 is composed of three push-up body 20, 20, and 20 force fixed to the rotation shaft 18, the lever portion 19, and the rotation shaft 18 at equal intervals. The rotation shaft 18 is provided horizontally below the conveyance surface of the downstream conveyor 6 and perpendicular to the conveyance path. The rotating shaft 18 is rotatably supported by the frame of the downstream conveyor 6.

The lever portion 19 has one end fixed to the rotating shaft 18, extends to the downstream side in the carrying direction at a right angle and substantially horizontally to the rotating shaft 18, and the rod of the pneumatic cylinder 17 whose other end side expands and contracts in a substantially vertical direction. It is rotatably connected to the tip side of 23.

The push-up unit main body 20 includes a working plate support portion 21 and a working plate 22 formed of a set collar and a spacer. The action plate support portion 21 is orthogonal to the rotation shaft 18, forms an obtuse angle with the lever portion 19 in side view, extends substantially upward, and supports the action plate 22 at the extended end. The working plate 22 is formed of a substantially rectangular plate having a size capable of passing vertically between the belts 11a, l ib and 11c. The action plate 22 is designed so that it does not hinder the conveyance of the printing book W when the pneumatic cylinder 17 is at the contracted end, and the upper surface thereof includes the upper surfaces (conveying surfaces) of the belts 11a, l ib, 11c. Or slightly lower than the upper surface of the belts 11a, lib, and 11c so that the belt 11a, l ib, and 11c are substantially parallel to the transport surface and the longitudinal direction is the transport direction. . Further, the upstream end of the working plate 22 has an obtuse angle with the other part of the working plate 22. Folded down to make RU

[0025] The pneumatic cylinder 17 is a double-acting cylinder, and is arranged so as to expand and contract in a substantially vertical direction with the rod cover facing up, and the head cover side is supported by the frame of the downstream conveyor 6 so as to be swingable. . As described above, the pneumatic cylinder 17 is rotatably connected to the end portion of the tip side force S lever portion 19 of the rod 23.

The pressing device 8 includes a bracket 24, an arm 25, and a pressing member 26.

One end of the bracket 24 is fixed to the frame of the downstream conveyor 6, extends upward from the vicinity of the carry-in end 13 of the downstream conveyor 6, then bends at a substantially right angle to the downstream side, and the other end of the arm 25 is connected to the other end. Supports swingable. The arm 25 extends downstream from the other end of the bracket 24 and rotatably supports the pressing member 26 at the extended end. The push-down member 26 has a disk shape, has a horizontal rotation center perpendicular to the transport direction, and is disposed above the belt l ib. The pressing member 26 is in contact with the upper surface of the printing book W conveyed by the downstream conveyor 6 by an urging force due to its own weight, and presses the printing book W toward the belt 1 lb with a weak force.

The pressing member 26 may be configured to have a cylindrical shape and press the printed book W against all of the belts 11a, l ib, and 11c! /.

[0027] The sensor 9 is used to detect a portion where the overlapping of the printing books W that are transported in an overlapping manner and where the overlapping of the printing books W due to defective printing is removed. The sensor 9 is a transmissive photosensor having a light projecting unit 27 and a light receiving unit 28. The light projecting unit 27 and the light receiving unit 28 are arranged to face each other up and down across a gap D for delivery. The light projecting unit 27 is attached to the bracket 24 so as to project light toward the light receiving unit 28 above the gap D. The light receiving unit 28 is attached below the gap D at a position where light from the light projecting unit 27 can be received. The presence / absence of the overlapped portion of the book W is determined based on whether or not the light receiving unit 28 detects light from the light projecting unit 27.

The stacking unit 3 includes a drum-type transport device 15, an alignment conveyor 29, and a holder 30 for preventing falling.

The drum-type transport device 15 also includes a drum 31, a motor 32 for rotating the drum 31, an inner belt 33, an outer belt 34, and a tension adjusting actuator 35. The drum 31 has a horizontal rotation shaft 36 orthogonal to the conveyance direction, and is rotated in one direction by a motor 32 connected by a belt 37. The drum 31 is connected to the roller 14 at the carry-in end of the downstream conveyor 6 by three belts 11a, l ib and 11c, and the three belts 1 la, l ib and 11c are connected to the drum 31 as it rotates. And the conveyor 14 at the carry-in end, the downstream conveyor 6 is driven. Therefore, the peripheral speed at which the drum 31 rotates is substantially equal to the conveyance speed of the downstream conveyor 6.

A rotary encoder 38 for measuring the rotation angle (rotation amount) and outputting the rotation angle (rotation amount) to the control unit 4 is connected to the motor 32 by a belt 39.

[0030] The inner belt 33 is in contact with 1Z4 on the outer periphery of the drum 31 so that the angle of contact is 90 degrees starting from the top of the drum 31 (region B in FIG. 1). Further, the inner belt 33 can be circulated outside the drum 31 so as to surround the drum 31 by being supported by a plurality of rollers between the three belts 11a, 11b, and 11c on the outer periphery of the drum 31. Placed in. Further, the inner belt 33 has a transverse feed area (A area in FIG. 1) provided before contacting the drum 31 and a downwardly directed vertical feed area (C in FIG. 1) after leaving the drum 31 in the circulation path. Area).

[0031] The outer belt 34 overlaps the inner belt 33 in the B region and is supported by the tension adjusting actuator 35 and the plurality of rollers 40a, 40g, and circulates outside the upper portion of the drum 31. Arranged as possible. The outer belt 34 is separated from the inner belt 33 at the upper part in the longitudinal feed region (C region). The outer belt 34 functions to sandwich the printing book W transferred by the downstream conveyor 6 with the inner belt 33 in the region B and send it to the arranging conveyor 29 provided below by changing the transfer direction.

The tension adjusting actuator 35 includes a pneumatic cylinder 41 and a tension roller 42 attached to the end of the rod of the pneumatic cylinder 41. The tension adjusting actuator 35 is arranged so that the tension roller 42 contacts the outer belt 34. In the tension adjusting actuator 35, the tension roller 42 increases or decreases the tension of the outer belt 34 by the expansion and contraction operation of the rod, and the force with which the outer belt 34 and the inner belt 33 sandwich the book W in the region B is adjusted.

[0033] The alignment conveyor 29 is formed of a bent conveyor, and the alignment surface 43, that is, the upper surface of the belt is vertical. It is arranged to pass below the feed area (C area). The aligning conveyor 29 receives the printing book W that is transferred by the drum-type conveying device 15 with the lateral movement force moved downward, and collects and stores (accumulates) the printing book W in an upright state. The alignment conveyor 29 moves the alignment surface 43 in a direction away from the drum 31 in order to secure a stacking location as the bundle in which the printing books W are stacked increases.

The fall-preventing holder 30 is provided outside the inner belt 33 and vertically above the alignment surface 43 force of the alignment conveyor 29. The holder 30 for preventing overturning moves appropriately in the same direction as the movement direction of the alignment surface 43 of the alignment conveyor 29 according to the degree of stacking of the booklet W, and the stacked booklet W is in a standing state. Work to maintain.

The control unit 4 includes a signal processing unit 44 and a solenoid valve 45. The solenoid valve 45 supplies compressed air for expansion operation and contraction operation to the pneumatic cylinder 17 of the push-up device 7. The control unit 4 will be described later together with an explanation of the operation of the bookbinding apparatus 1.

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

The booklet stacking apparatus 1 is continuously supplied from the supply device arranged on the upstream side of the upstream conveyor 5 in a state where the upstream side of the downstream side of the booklet W is superimposed on the downstream side thereof. Is done.

[0036] The printed book W is continuously conveyed to the downstream side by the belt 10 of the upstream conveyor 5, passes through the gap D for delivery, and is received on the belts 11a, ib, and 11c of the downstream conveyor 6. Passed. The gap D for delivery is set to an appropriate size so that the booklet W does not fall in consideration of the length of the booklet W in the conveyance direction and the degree of overlap of the booklet W. The printed book W is placed on the belts 11a, l ib and 11c, passes over the working plates 22, 22 and 22, and is conveyed to the drum type conveying device 15.

The pressing device 8 prevents the printing book W from moving laterally with respect to the conveying direction by pressing the upper surface of the printing book W by the downward biasing force of the pressing member 26 due to its own weight.

[0037] When the booklet W is transported to the drum-type transport device 15 and reaches the B region, it is sandwiched between the inner belt 33 and the outer belt 34 and moves with the rotation of the drum 31 in the B region. Will be changed downward. Book W moves past area B and moves down area C for a while. To do. Thereafter, when the outer belt 34 is folded back and separated from the inner belt 33, the printed book W is continuously accumulated at a position close to the inner belt 33 on the alignment surface 43 of the alignment conveyor 29 in a standing state.

[0038] As the printing book W is accumulated on the alignment surface 43 of the alignment conveyor 29, the fall prevention holder 30 moves in a direction in which the distance from the inner belt 33 increases. The alignment conveyor 29 moves the alignment surface 43 in the same direction as the movement direction of the fall prevention holder 30 in accordance with the movement of the fall prevention holder 30.

By such operations of the holder 30 and the aligning conveyor 29 for preventing the falling, the printing book stacking apparatus 1 can carry out a required amount of the printing book while keeping the printing book W upright.

The operations of the upstream conveyor 5, the downstream conveyor 6, the inner belt 33, the outer belt 34, the alignment conveyor 29, and the fall prevention holder 30 described above are controlled by the control unit 4.

[0039] Next, when the printing book W such as defective printing is extracted from the printing book W being conveyed in the supply device or the upstream conveyor 5, and the printing book W conveyed continuously is interrupted. The operation of the printing book stacking apparatus 1 will be described.

Note that the printing book stacking apparatus 1 performs the stacking operation described above without any trouble when the printing book W is transported with a small drawing amount even when the printing book W is pulled out.

[0040] The interruption of the printing book W is from the light projecting unit 27 that is normally blocked by the printing book W when the interruption caused by the removal of the printing book W reaches the gap D for delivery. Light is detected by the light receiving unit 28 detecting it. The light receiving unit 28 detects the beginning of the interrupted portion of the booklet W, that is, the last part of the continuous booklet W before the interrupted portion.

When the signal processing unit 44 of the control unit 4 receives the signal for detecting the interruption of the booklet W, the signal processing unit 44 calculates a waiting time until the downstream compare 6 is stopped. The waiting time is calculated based on the conveyance speed of the downstream conveyor 6 and the distance L from the detection position of the sensor 9 (the position where the last part of the continuous book W in the conveyance direction is detected) to the preset position. .

Here, the conveyance speed of the downstream conveyor 6 is calculated by the signal processing unit 44 based on the rotation angle transmitted by the rotary encoder 38 connected to the motor 32 that drives the downstream conveyor 6. Is issued. In addition, the position set in advance as a reference for the distance L is that the upstream conveyor 5 appropriately overlaps the printing book W transported after the interrupted portion with the printing book W on the downstream conveyor 6 to the downstream conveyor 6. It is determined within the range that can be sent.

When the waiting time elapses, the signal processing unit 44 stops the conveying operation of the downstream conveyor 6 and controls the solenoid valve 45 to extend the pneumatic cylinder 17. The lever 19 is lifted at its end to rotate the rotating shaft 18, and the rotating rotating shaft 18 rotates the push-up body 20, 20, 20 to the downstream of the action plates 22, 22, 22. Raise the side edge. At this time, the last printed book W that has passed continuously is located above the working plates 22, 22, and 22 (see Fig. 4), and works when the downstream end of the working plates 22, 22, and 22 rises. The upstream side of the last printing book W is lifted by the plates 22, 22 and 22, and a gap is formed between the downstream conveyor 6 and the transport surface (see FIG. 5).

[0044] The position where the downstream side end portions of the action plates 22, 22, and 22 in the printing book W come into contact with each other is preferably upstream of the printing book W in the conveying direction. This is because the upstream side of the print book W is reliably lifted even if the degree of overlap of the print book W is small.

[0045] The presser device 8 is a lift that is likely to occur when the pressing members 26 contacting the upper surface of the printing book W lift the printing book W by the action plates 22, 22, 22 by the downward biasing force of its own weight. Prevent misalignment (movement) of the printed book W. In addition, the pressing device 8 is designed to reduce the overlap of the printing book W when the downstream ends of the working plates 22, 22, and 22 where the overlapping of the printing book W is reduced by pulling out the downstream side of the printing book W. Even when there is a risk of breakage, it works to maintain the overlap of the printing book W by suppressing the downstream printing book W and preventing its rise.

The upstream conveyor 5 continues the conveyance operation of the printing book W while the downstream conveyor 6 stops the conveyance operation. When the printing book W is again conveyed by the upstream conveyor 5 and reaches the gap D for delivery, the light from the light projecting unit 27 that has been received by the light receiving unit 28 is blocked, and the sensor 9 A signal for W detection, that is, information notifying the end of the interrupted portion of the copy book W is transmitted to the signal processing unit 44.

The signal processing unit 44 stores the time when the downstream end of the booklet W reaches the gap D. Based on the transport speed of the upstream compare 5 and the detection position of the sensor 9, the signal processing unit 44 sets the gap D for delivery. The waiting time until the downstream end of the reached book W reaches the bottom of the book W lifted by the action plates 22, 22, and 22 and is appropriately overlapped is calculated.

[0047] When the waiting time has elapsed, the signal processing unit 44 controls the solenoid valve 45 to cause the pneumatic cylinder 17 to contract and rotate the rotary shaft 18 to rotate the downstream end of the action plates 22, 22, and 22 Lower part. The action plates 22, 22, and 22 are lowered to the same height as the conveyance surface of the downstream conveyor 6 or below the conveyance surface, and the printing book W lifted to the action plates 22, 22, and 22 is the upstream conveyor 5 Is overlaid on the downstream side of the transported book. Simultaneously with the lowering of the downstream ends of the action plates 22, 22, 22, the signal processing unit 44 starts the conveying operation of the downstream conveyor 6. Thereafter, the downstream conveyor 6 continuously conveys the overlapping booklet W to the drum type conveying device 15 as before the stop.

[0048] Since the upstream end of the action plates 22, 22, and 22 gradually rises to a position lower than the conveying surface and toward the downstream side when the printing book W is lifted (Fig. 5), the upstream conveyor 5 allows the newly transported book W to be smoothly transported onto the action plates 22, 22, and 22 (Fig. 6).

[0049] The printing book W from which the interrupted portion has been eliminated in the push-up device 7 is transported to the drum-type transport device 15 by the downstream conveyor 6. Thereafter, as in the case of the interrupting force of the printing book W described above, the printing book W is also changed to a downward movement by the drum type conveying device 15 and is placed on the alignment surface 43 of the alignment conveyor 29. Are continuously accumulated. In this way, the booklet stacking apparatus 1 eliminates the overlapped portion of the booklet W even if the overlapped portion of the booklet W is overlapped in a state of being shifted in the transport direction. Then, the book W can be accumulated on the alignment conveyor 29 without any trouble.

[0050] In the above-described embodiment, the belts 11a, l ib, 11c of the downstream conveyor 6 and the inner belt 33 of the drum-type transport device 15 can be shared by the same belt. One inner belt 33 may be provided on the outer periphery of the drum 31 so as to be arranged on the outer sides of the belts 11a and 11c.

The conveyance speed of the downstream conveyor 6 may be measured using another detection device, such as a Doppler vibrometer, instead of being measured by the rotary encoder 38.

Apply downward biasing force of the pressing member 26 in the holding device 8 by the panel. May be. If the weight of the pressing member 26 is too large, a spring that biases in a direction that reduces the biasing force due to the weight of the pressing member 26 may be used. The outer peripheral portion of the pressing member 26 in contact with the printed book W is preferably formed of a cushioning material such as rubber, soft grease, or sponge.

[0051] The push-up device 7 can be formed by a pneumatic cylinder 17 and a wheel rotatably attached to the distal end side of the rod 23 of the pneumatic cylinder 17.

Further, the push-up device 7 may be fixed to the rod 23 of the pneumatic cylinder 17 so that the action plate is inclined parallel to the transport surface of the downstream conveyor or lowered on the downstream side. In this case, when the rod 23 is contracted, the entire working plate is positioned below the conveying surface, and the upstream end of the working plate is transferred to the downstream conveyor 6 by the upstream conveyor 5 after the interruption. The printed book W is constructed so as to be located downstream from the downstream end. In this case, the working plate does not interfere with the transport when the booklet W is transported in an overlapping manner, and the upstream conveyor 5 is used when the lifted booklet W is lowered to eliminate the interrupted portion. No damage will be caused by hitting the printed book W transferred from.

[0052] The upstream conveyor 5 and the downstream conveyor 6 may be other types of competitors such as roller roller conveyors. In that case, the conveyance speed of the downstream conveyor 6 is measured by the roller encoder 38.

The appearance, shape, material, etc. of the bookbinding apparatus 1 are not limited to the above embodiment. In addition, the individual configuration or overall structure, shape, dimensions, number, material, and the like of the bookbinding device 1, the sheet material conveying device 2, the stacking unit 3, and the control unit 4 are appropriately determined in accordance with the spirit of the present invention. Can be changed.

Industrial applicability

The present invention can be used in a bookbinding apparatus that transports and stacks sheet materials such as a printing book in a state where the overlay is shifted downstream in the transporting direction.

Claims

The scope of the claims

[1] A conveying device that conveys sheet material in a state where the overlap is shifted to the downstream side in the conveying direction,

A transport conveyor capable of transporting the sheet material in a horizontal direction;

A push-up device,

The lifting device is

Having a push-up portion arranged in the middle of the transport path of the transport conveyor;

The push-up part is

When a part or all of the transfer is movable below the transfer surface of the transfer conveyor or between the surface including the transfer surface and the upper side of the transfer surface, and moves above the transfer surface, It is configured to be able to lift the upstream side of the sheet material in the conveying direction by contacting the lower surface of the sheet material

The sheet | seat material conveying apparatus characterized by the above-mentioned.

[2] A conveying device that conveys a sheet material in a state where the overlap is shifted to the downstream side in the conveying direction,

A push-up device;

A holding device,

The lifting device is

The push-up part is

When a part or all of the transfer is movable below the transfer surface of the transfer conveyor or between the surface including the transfer surface and the upper side of the transfer surface, and moves above the transfer surface, Is configured to be able to lift at least the upstream side in the conveying direction of the sheet material by contacting the lower surface of the sheet material,

The holding device is

There is a pressing portion that is disposed on the downstream side of the push-up portion in the conveyance path and that contacts the upper surface of the sheet material on the conveyance surface and presses the downstream side of the sheet material downward. Do

[3] An upstream conveyor that superimposes the sheet material in a state shifted to the downstream side in the conveying direction and continuously transfers the sheet material to the conveying conveyor;

A sensor for detecting the presence of a portion where the continuous sheet material conveyed by the upstream conveyor is interrupted.

The sheet material conveying device according to claim 1 or 2.

[4] When the sensor detects the start of a portion where the continuity of the sheet material is interrupted, the conveyor is stopped after a predetermined time, and the push-up unit is moved above the conveyance surface, and then the sensor Has a control unit that controls to move the push-up portion to the conveying surface or below the conveying surface after a predetermined time from when the end of the portion where the sheet material is interrupted is detected.

The sheet material conveying device according to claim 3.

[5] The push-up device has a rotation shaft below the transport surface,

The pivot shaft is provided horizontally and perpendicular to the transport path,

The push-up portion has one end fixed to the rotating shaft and the other end extending substantially downstream from the rotating shaft to the downstream side of the conveying path.

The push-up unit is configured to be able to lift the upstream side in the transport direction of the sheet material by swinging the push-up device about the rotation axis.

The sheet material conveying device according to claim 1 or 2.

[6] The sheet material conveying apparatus according to claim 1 or claim 2,

A stacking device that stacks the sheet material that is continuously transported by the sheet material transport device.

A bookbinding apparatus characterized by that.

[7] The sheet material conveying device according to claim 4,

A bookbinding apparatus characterized by that. [8] The sheet material conveying device according to claim 5,

A bookbinding apparatus characterized by that.