WO2015129436A1

WO2015129436A1 - Printing apparatus

Info

Publication number: WO2015129436A1
Application number: PCT/JP2015/053441
Authority: WO
Inventors: 加地　誠; 田阪　範文; 西山　浩司
Original assignee: 三菱重工印刷紙工機械株式会社
Priority date: 2014-02-25
Filing date: 2015-02-06
Publication date: 2015-09-03
Also published as: JP2015157697A; JP5714147B1

Abstract

　This printing apparatus is provided with: a paper supply apparatus (11) for supplying a web (W) from a roll (R); a printer (12) capable of printing different images in continuous fashion on the web (W); a folding machine (14) for lengthwise trimming and stacking of the printed web (W), followed by transverse trimming to form a folio (F); and a printing controller (111) for adjusting the rotation speed of a cutting cylinder (36) in accordance with print information of a printed work to be printed, making it possible to change the length of the folio (F). It is thereby possible to print different printed works at high speed.

Description

Printing device

The present invention relates to a printing apparatus capable of printing printed materials having different patterns and eclectic lengths.

Generally, as a printing machine for printing a printed matter, there are a rotary printing machine using a plate and a digital printing machine using an inkjet head. Since a rotary printing machine performs printing using a plate, it is effective when printing a large amount of printed matter such as newspapers. On the other hand, since a digital printing machine performs printing using digital data, it can cope with any number of copies of printed matter.

By the way, there is a demand to print different sizes of printed matter with one printing machine. In this case, since the rotary printing machine performs printing using a plate, it is difficult to meet such a demand. Since the digital printing machine performs printing using digital data, the size of the printed matter can be changed. An example of such a printing machine is described in Patent Document 1 below. The ink jet printer described in Patent Document 1 includes a paper feed unit, an image recording unit, a cut unit, and a sorter. When the ink jet head records a cut mark at the boundary of each image, and the sensor detects the cut mark, The cutter cuts the boundary portion of each image.

Japanese Patent Laid-Open No. 2002-046260

In the ink jet printer described in Patent Document 1, when the sensor detects this cut mark, the cutter cuts the boundary portion of each image. Therefore, the cutting position by the cutter is changed by changing the printing position of the cut mark. In addition, different sizes of printed matter can be printed on one printing machine. However, since the cutter is operated after the sensor detects the cutting position, the web cannot be conveyed at high speed, and it is difficult to speed up the printing operation.

This invention solves the subject mentioned above, and aims at providing the printing apparatus which can print a different printed matter at high speed.

In order to achieve the above object, a printing apparatus of the present invention includes a paper feeding unit that feeds a web from a web, a digital printing machine that can print different images continuously on the web fed from the paper feeding unit, A folding machine that forms a crease of a predetermined length by overlapping and folding a web printed by the digital printing machine by a saw cylinder and a receiving cylinder, and the saw cylinder according to print information of a printed matter to be printed And a control device capable of changing the length of the signature by adjusting the rotational speed of the first and second rotations.

Therefore, the control device can change the length of the signature to be cut by adjusting the rotational speed of the saw cylinder according to the printing information of the printed matter to be printed, and the length of the image printed by the digital printing machine. Accordingly, the folding machine can appropriately form a signature, and different printed matter can be printed at high speed.

In the printing apparatus of the present invention, the saw cylinder and the receiving cylinder can be independently driven and rotated by a separate driving device that is a web conveying device, and the control device can be configured such that the saw blade of the saw cylinder causes the web to rotate. When cutting, the circumferential speed of the saw cylinder is the same as the traveling speed of the web. When the saw blade of the saw cylinder is not in contact with the web, the circumferential speed of the saw cylinder is set to the traveling speed of the web. It is characterized by being faster or slower than the speed.

Therefore, when the saw blade of the saw cylinder cuts the web, the peripheral speed of the saw cylinder is the same as the traveling speed of the web, so that the web can be properly cut without damaging the web. In addition, when the saw blade of the saw cylinder is not in contact with the web, the cutting position is appropriately adjusted according to the length of the signature by making the peripheral speed of the saw cylinder higher or lower than the traveling speed of the web. be able to.

In the printing apparatus of the present invention, there is provided a transport device that receives the signature formed by the folding machine by an impeller and stacks and transports the signature on the transport line, and the control device uses the folding machine to increase the length of the signature. When the height is changed, the rotational phase and rotational speed of the impeller are changed according to the length of the compromise.

Therefore, when the length of the signature by the folding machine is changed, even if the length of the signature is changed, the blade is changed by changing the rotation phase and the rotational speed of the impeller according to the length of the signature. Cars can properly receive the signatures and stack them on the transport line.

In the printing apparatus according to the aspect of the invention, the control device sets an image to be printed by the digital printing machine according to the print information, and sets a length of a signature to be cut by the saw cylinder and the receiving cylinder. In this case, the printing timing of the digital printing machine is set based on the cross cutting position of the web by the saw cylinder and the receiving cylinder.

Therefore, when printing a signature with a length different from the previous time, the printing timing of the digital printing machine is set based on the cross-cutting position of the web by the saw cylinder and the receiving cylinder. It is possible to simplify the structure by eliminating the need for a device for changing the web path length.

In the printing apparatus of the present invention, a conveying device having a plurality of conveying lines that stack and convey a predetermined number of signatures formed by the folding machine, and a folding symbol formed by the folding machine in the plurality of conveying lines. A distribution device that distributes to any one of the plurality of conveyance lines, wherein the control device controls the operation timing of the distribution device according to the number of copies of the signature and distributes the plurality of conveyance lines to the plurality of conveyance lines. It is characterized by discharging different numbers of signatures from the line.

Therefore, since the control device operates the sorting device in accordance with the number of copies of the signature, only the same number of signatures are assigned to each transport line, and the setting of the cam mechanism and the like in the sorting device is not changed. Thus, different numbers of signatures can be discharged from each conveyance line, and the productivity of printing work can be improved.

In the printing apparatus according to the aspect of the invention, the control device counts the signatures formed by the folding machine across the web, and when the count number of signatures reaches a predetermined count number set in advance, the control device counts the signatures. It is characterized in that the output destination of the folding machine is switched to another transport line by a dispensing device.

Therefore, the sorting apparatus switches the output destination to another conveyance line when the number of copies of the fold formed by the folding machine reaches a preset number of copies, so that the paper feeding unit, the digital printing machine, and the folding machine are switched. The printing operation can be continuously performed without stopping.

In the printing apparatus of the present invention, the digital printing machine has an ink jet printing machine.

Therefore, the digital printing machine can be simplified and reduced in cost by using an ink jet type printing machine.

According to the printing apparatus of the present invention, the length of the signature can be changed by adjusting the rotational speed of the saw cylinder according to the print information of the printed material to be printed, so that different printed materials can be printed at high speed. .

FIG. 1 is a schematic configuration diagram illustrating a printing apparatus according to the present embodiment. FIG. 2 is a schematic view showing details of the saw cylinder and the receiving cylinder. FIG. 3 is a schematic diagram showing the rotational speed of the saw cylinder. FIG. 4 is a schematic diagram showing the rotational speed of the saw cylinder. FIG. 5 is a schematic diagram showing a web sorting apparatus. FIG. 6 is a schematic diagram illustrating the operation of the web sorting apparatus. FIG. 7 is a graph showing the conveyance time with respect to the length of the signature in the folding machine. FIG. 8 is a graph showing the conveyance time with respect to the length of the signature in the folding machine.

Hereinafter, preferred embodiments of a printing apparatus according to the present invention will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by this embodiment.

FIG. 1 is a schematic configuration diagram illustrating a printing apparatus according to the present embodiment, FIG. 2 is a schematic diagram illustrating details of a saw cylinder and a receiving cylinder, and FIGS. 3 and 4 are schematic diagrams illustrating a rotation speed of the saw cylinder. 5 is a schematic diagram showing the web sorting device, FIG. 6 is a schematic diagram showing the operation of the web sorting device, and FIGS. 7 and 8 are graphs showing the conveyance time with respect to the length of the signature in the folding machine. .

As shown in FIG. 1, the printing apparatus 10 according to the present embodiment includes a paper feeding device 11, a printing machine 12, a web pass device 13, a folding machine 14, a sorting device 15, and a transport device 16. Configured.

The paper feeding device 11 can hold the web R on which the web W is wound in a roll shape, and can rotate the web R to supply the web W at a predetermined speed. The printing machine 12 includes a back surface printing unit 21, a front surface printing unit 22, and a reversing device 23. The back surface printing unit 21 and the front surface printing unit 22 are configured by an ink jet printer as a variable printer.

The back surface printing unit 21 has a plurality (four in this embodiment) of

ink jet heads

21 a, 21 b, 21 c, 21 d, and the web W on which the

ink jet heads

21 a, 21 b, 21 c, 21 d are supported by the guide roller 24. Multicolor printing can be performed on one side (back side). The front surface printing unit 22 has a plurality (four in this embodiment) of

inkjet heads

22a, 22b, 22c, and 22d, and the web W in which the inkjet heads 22a, 22b, 22c, and 22d are supported by the guide roller 25. Multicolor printing can be performed on one surface (surface).

In this embodiment, an inkjet printer is applied as a variable printer. However, any digital printer capable of receiving and printing data created by an editing system or the like as long as it is not limited to an inkjet printer, an electronic printer It may be a photographic method and does not ask the drawing method.

Since the back surface printing unit 21 and the front surface printing unit 22 perform printing by the inkjet heads 21a, 21b, 21c, 21d, 22a, 22b, 22c, and 22d from above the conveyed web W, the back surface printing unit. A reversing device 23 for reversing the front and back of the web W is disposed between the front surface printing unit 22 and the front surface printing unit 22.

Further, in the printing machine 12, drying

devices

26 and 27 are arranged on the downstream side of the back surface printing unit 21 and the front surface printing unit 22, respectively. The drying

devices

26 and 27 are for drying the ink on the web W printed by the back surface printing unit 21 and the front surface printing unit 22. As these drying

devices

26 and 27, for example, an infrared irradiation device is applied.

The web pass device 13 prints on the front and back surfaces of the printing machine 12 and vertically cuts and overlaps the webs W conveyed by the

guide rollers

28 and 29. The web pass device 13 includes a slitter 31 and a turn bar 32. The slitter 31 cuts the web W along the longitudinal direction (longitudinal direction of the web W, conveyance direction of the web W). In the present embodiment, the web W is cut along the longitudinal direction at three locations in the width direction. By cutting, four webs W having the same width are formed. The turn bar 32 sets up a conveyance path by stacking up and down four webs W vertically cut by the slitter 31.

The folding machine 14 forms a signature F by longitudinally folding the web W and then cross-cutting. The folding machine 14 includes a triangular plate 33 and a cutting device 34. The triangular plate 33 vertically folds the four webs W stacked by the turn bar 32.

The cutting device 34 cuts the four webs W vertically folded by the triangular plate 33 and conveyed by the lead-in roller 35 to a predetermined length to form a signature F (F1, F2). In the cutting device 34, a saw cylinder 36 and a receiving cylinder 37 are disposed so as to face the left and right with the web W interposed therebetween.

In this cutting device 34, as shown in FIG. 2, a plurality of (two in this embodiment) saw blades 36a are attached to the circumferential surface of the saw body 36 at equal intervals in the circumferential direction. On the other hand, a plurality of (two in this embodiment) saw blade receivers 37a are attached to the circumferential surface of the receiving cylinder 37 at equal intervals in the circumferential direction. The saw cylinder 36 and the receiving cylinder 37 can be driven and rotated independently by driving

devices

38 and 39, respectively. The saw cylinder 36 and the receiving cylinder 37 can be independently driven and rotated by

separate driving devices

38 and 39, but may be driven and rotated synchronously by one driving device. The saw cylinder 36 and the receiving cylinder 37 are synchronously rotated at the same peripheral speed by the driving

devices

38 and 39, and the rotation phase thereof is set so that each saw blade 36a and each saw blade receiver 37a face each other at a constant period. Match. For this reason, the saw cylinder 36 and the receiving cylinder 37 rotate synchronously, and when the saw blade 36a and the saw blade receiver 37a face each other and coincide with each other, the saw blade 36a cuts the web W, and a predetermined length of folding is achieved. F can be formed.

The cutting device 34 can change the length of the signature F by changing the cutting timing of the web W. The cutting device 34 (the saw drum 36 and the receiving drum 37) can be driven by driving

devices

38 and 39 different from the web conveying device (the lead-in roller 35, the conveying

belts

51 and 61, etc.). That is, as shown in FIG. 3, when the traveling speed (conveyance speed) of the web W is the speed V1, the rotational speed of the saw cylinder 36 is the rotational positions t1, t2, t3 at which the saw blade 36a cuts the web W. , T4, ..., the circumferential speed of the saw cylinder 36 is set to a rotational speed that is the same speed V1 as the circumferential speed of the receiving cylinder 37 and the traveling speed of the web W. Further, the rotational speed of the saw cylinder 36 is a rotational position other than the vicinity of the rotational positions t1, t2, t3, t4... Where the saw blade 36a cuts the web W, and the peripheral speed of the saw cylinder 36 is the receiving cylinder 37. And the rotational speed at which the speed V2 becomes faster than the running speed of the web W. Then, since the saw cylinder 36 makes a round in a shorter time than the receiving cylinder 37, the length of the signature F cut by the saw blade 36a and the saw blade receiving 37a is shortened.

On the other hand, as shown in FIG. 4, the rotational speed of the saw cylinder 36 is in the vicinity of the rotational positions t11, t12, t13, t14. The circumferential speed of the receiving cylinder 37 and the rotational speed that is the same speed V1 as the traveling speed of the web W are set. Further, the rotational speed of the saw cylinder 36 is a rotational position other than the vicinity of the rotational positions t11, t12, t13, t14... Where the saw blade 36a traverses the web W. And the rotation speed at which the speed V3 becomes slower than the running speed of the web W. Then, since the saw cylinder 36 makes a round in a longer time than the receiving cylinder 37, the length of the signature F cut by the saw blade 36a and the saw blade receiver 37a becomes longer. Note that the traveling speed V1 is not a fixed speed and can vary depending on printing conditions.

In the distribution device 15, as shown in FIG. 5, the distribution guide 41 has a triangular shape, is rotatably supported by a support shaft 41a, and can be independently moved by a drive device 46. . In the distribution guide 41, the roller 43 connected by the connection link 42 is in contact with the circumferential surface of the cam roller 44. Therefore, the distribution guide 41 can be moved via the connecting link 42 by the cam roller 44 moving along the peripheral surface as the cam roller 44 rotates. That is, when the sorting guide 41 is moved to the position shown in FIG. 5, the signature F formed by cutting the web W by the cutting device 34 is guided by the guide roller 45 and then conveyed by the sorting guide 41. It can be distributed to the line L2. On the other hand, when the sorting guide 41 is moved to the position shown in FIG. 6, the signature F formed by cutting the web W by the cutting device 34 is guided by the guide roller 45 and then conveyed by the sorting guide 41. It can be distributed to the line L1. After branching to the conveying lines L1 and L2, a sorting device may be further provided. In this case, the signature can be sorted into three or more lines.

As shown in FIG. 1, the transport device 16 has a plurality of (in this embodiment, two) transport lines L 1 and L 2, and signatures F (F 1 and F 2) distributed by the sorting device 15. A predetermined number of copies are stacked and conveyed as a folded bundle G (G1, G2), thereby discharging a predetermined number of copies. The transport lines L1 and L2 include a pair of

transport belts

51 and 61,

impellers

52 and 62, and upper and

lower conveyors

53 and 63. Note that the predetermined number of copies of the signatures F (F1, F2) distributed by the distribution device 15 may be the same or different in the conveyance lines L1, L2.

The

conveyance belts

51 and 61 convey the signature F (F1, F2). The

impellers

52 and 62 rotate at a speed linked to the length of the signature F and the printing speed, so that the signature F (F1, F2) received from the

transport belts

51 and 61 is transferred to the upper conveyor 53 and the lower conveyor 63. Pile up. The upper and lower conveyors 53 and 54 align and stack the signatures F (F1, F2) received from the

impellers

52 and 62, and the signature bundle G (G1) in which a predetermined number of signatures F (F1, F2) are stacked. , G2) are discharged to the outside.

The

impellers

52 and 62 can be driven and rotated independently by driving devices 54 and 64, respectively. The cutting device 34 can change the length of the signature F by changing the cutting timing of the web W. Then, the signatures F cut by the cutting device 34 have different times for reaching the

impellers

52 and 62 according to their lengths. Therefore, the drive devices 54 and 64 adjust the initial rotation phase and the rotation speed in the

impellers

52 and 62 according to the length of the signature F cut by the cutting device 34. For example, as shown in FIG. 7, when the front end Fa, the rear end Fb, and the length of the signature F are FL1, the transport time T1 from the cutting device 34 to the

impellers

52 and 62 is obtained. On the other hand, as shown in FIG. 8, when the front end Fa, the rear end Fb, and the length of the signature F are FL2, the transport time T2 from the cutting device 34 to the

impellers

52 and 62 is obtained. Here, since the length of the signature F is FL1> FL2, the conveyance time T1 <T2. For this reason, when the length of the signature F is increased, the drive devices 54 and 64 advance the timing at which the tip Fa of the signature F reaches the

impellers

52 and 62, so that the initial rotational phase in the

impellers

52 and 62 is increased. Is adjusted so that the rotational speed becomes slow.

As shown in FIG. 1, the printing apparatus 10 according to the present embodiment configured as described above includes a paper feed control unit 101 that drives and controls the paper feeding device 11, and a printing machine control unit 102 that drives and controls the printing machine 12. A web path control unit 103 for driving and controlling the web path device 13, a cutting control unit 104 for driving and controlling the cutting device 34, a sorting control unit 105 for driving and controlling the sorting device 15, a lead-in roller 35, and Folding machine conveyance control unit 106 that drives and controls

conveyance belts

51 and 61, impeller control unit 107 that drives and controls

impellers

52 and 62, conveyor control unit 108 that drives and controls

conveyors

53 and 63, and each control unit A print control unit 111 for controlling 101 to 108 and an input unit 112 for an operator to input various information are provided.

Therefore, when the operator inputs print information using the input unit 112, the print control unit 111 passes the control units 101 to 108 through the paper feeding device 11, the printing machine 12, the folding machine 14, the sorting device 15, and the conveyance. The device 16 is driven and controlled.

When forming two types of signatures (printed matter) F1 and F2 using the printing apparatus 10, the operator uses the input unit 112 to, for example, two types of printed matter having different lengths (folded bundles G1 and G2). Print information (for example, the length and the number of copies to be printed) is input. Then, the printing control unit 111 controls the sheet feeding device 11 by the sheet feeding control unit 101 to feed out a predetermined web W, controls the printing machine 12 through the printing machine control unit 102, and sets two types of printed matter. In this order, the print image is changed at a predetermined timing for changing the lengths of the two types of printed matter. The print control unit 111 controls the cutting device 34 (the saw cylinder 36 and the receiving cylinder 37) via the cutting control unit 104 to form two types of signatures F1 and F2 in a predetermined order, and two types. The horizontal cutting length is changed at a predetermined timing for changing the length of the printed material.

Thereafter, the printing control unit 111 controls the sorting device 15 via the sorting control unit 105 to sort the signatures F1 and F2 sent in order. Here, the folding machine conveyance control unit 106 adjusts the conveyance speed of the signatures F1 and F2 in the lead-in roller 35 and the

conveyance belts

51 and 61, and the impeller control unit 107 adjusts the signatures F1 and F2 in the

impellers

52 and 62. , And the signature bundles G1 and G2 are discharged separately by the

conveyors

53 and 63 via the conveyor control unit 108.

More specifically, when printing a fixed-length printed matter, conventionally, the distance between the back surface printing unit 21 and the front surface printing unit 22 is an integral multiple of the printing pattern length (fixed). The distance between the front surface printing unit 22 and the cutting device 34 is set to an integral multiple of the print pattern length (fixed). Furthermore, since the web W expands and contracts depending on the type and printing state (ink amount) and an error occurs in the distance, a mechanism (for example, a compensator) for finely adjusting the length of the web W and the paper length is provided. It is common.

However, when the length of the printed material can be changed, the distance between the back surface printing unit 21 and the front surface printing unit 22 and the distance between the front surface printing unit 22 and the cutting device 34 become an integral multiple of the print pattern length. Is not limited. Although it is conceivable to provide a compensator and adjust the path length of the web W to an integral multiple, the adjustment time becomes longer, the operability is lowered, and the cost of the apparatus is increased.

In the present embodiment, when printing of the printing apparatus 10 is started, the printing timing is set by each of the

printing units

21 and 22 based on the transverse cutting position of the web W by the saw cylinder 36 and the receiving cylinder 37. Specifically, the timings of the print start signals of the

printing units

21 and 22 are set as follows. Here, the distance A is the distance from the back surface printing unit 21 to the cutting device 34, and the distance B is the distance from the front surface printing unit 22 to the cutting device 34.
Printing start timing of back surface printing unit = cutting timing by saw cylinder-(distance A / web transport speed) + correction value for back surface printing Printing start timing of front surface printing unit = cutting timing by saw cylinder-(distance B / web transport speed) + Correction Value for Front Surface Printing By this, the printing timing can be synchronized with the cutting timing of the web W by the saw cylinder 36 regardless of the printing picture length.

The back side printing correction value and the front side printing correction value are values for correcting the length of the web W extending and contracting between the back side printing unit 21 and the cutting device 34, and are preset values. The correction value for front side printing corrects the distance B, and the correction value for back side printing corrects the distance A. The amount of correction varies depending on the paper type, ink type, image line rate of printed matter, amount of drying heat, and the like. Further, the back-side printing correction value and the front-side printing correction value can also be used for fine adjustment of the front and back according to the expansion / contraction state of the web W of the back-side printing unit and the front-side printing unit.

In this case, since the distances A and B and the web conveyance speed are specified values, the print control unit 111 uses the print pattern length in the print information input from the input unit 112 to perform printing by the

printing units

21 and 22. Set the start timing.

In addition, the print control unit 111 controls the cutting control unit 104 when the signature F1 (folded bundle G1) is changed to a signature F2 (folded bundle G2) having a different length during printing. Then, the cutting timing of the web W by the cutting device 34 is changed by the folding machine 14. That is, when the short signature F1 (folded bundle G1) is changed to the long signature F2 (folded bundle G2), the folding machine control unit 103 sets the rotational speed of the saw barrel 36 and the saw blade 36a is the web W. The speed is the same as that of the receiving cylinder 37 in the vicinity of the rotational position where the web is cut, and the speed of the saw blade 36a is lower than that of the receiving cylinder 37 near the rotational position where the web W is not crossed.

Then, when the print control unit 111 is changed from the signature F1 (the signature bundle G1) to the signature F2 (the signature bundle G2), the distribution control unit 104 controls the drive of the sorting device 15, The first transfer line L1 is changed to the second transfer line L2. That is, the printing control unit 111 counts the signatures F1 formed by the cutting device 34 crossing the web W in the same manner as the transfer for each normal signature bundle, and the count number (number of copies) of the signatures F1. ) Reaches a predetermined count number set in advance, the sorting device 15 switches the output destination of the folding machine 14 from the first transport line L1 to the second transport line L2. That is, the short signature F1 is discharged from the first transport line L1, while the long signature F2 is discharged from the second transport line L2.

At this time, since the short signature F1 (the signature bundle G1) is changed to the long signature F2 (the signature bundle G2), the printing control unit 111 performs the initial operation of the impeller 62 by the impeller control unit 106. Adjust the rotation phase and rotation speed. In other words, when the short signature F1 (the signature bundle G1) is changed to the long signature F2 (the signature bundle G2), the conveyance time from the sorting device 15 to the impeller 62 is shortened. Faster arrival time at Therefore, the impeller control unit 106 shifts the rotational phase of the impeller 62 to the front side in the rotational direction and slows the rotational speed.

As described above, in the printing apparatus according to the present embodiment, the paper feeding device 11 that supplies the web W from the web R, the printing machine 12 that can print different images continuously on the web W, and the printed web W The folding machine 14 for forming the signature F by vertically cutting and stacking the sheets and then transversely cutting them, and the folding speed by adjusting the rotational speed of the saw cylinder 36 according to the printing information of the printed matter to be printed. A print control unit 111 capable of changing the length of F is provided.

Accordingly, the print control unit 111 can change the length of the signature F to be cut by adjusting the rotational speed of the saw cylinder 36 according to the print information of the printed matter to be printed. The folding machine 14 can appropriately form the signature F according to the length of the image printed (printed picture length), can print different printed materials at high speed, and improves the productivity of printing work. be able to.

In the printing apparatus according to the present embodiment, the saw cylinder 36 and the receiving cylinder 37 can be independently driven and rotated by

drive devices

38 and 39 different from the lead-in roller 35 and the

conveyor belts

51 and 61, and the print control unit. 111, when the saw blade 36a of the saw cylinder 36 cuts the web W, the peripheral speed of the saw cylinder 36 is the same as the traveling speed of the web W, and the saw blade 36a of the saw cylinder 36 is in contact with the web W. When not, the peripheral speed of the saw cylinder 36 is set to be higher or lower than the traveling speed of the web W. Therefore, when the saw blade 36a of the saw cylinder 36 cuts the web W, the peripheral speed of the saw cylinder 36 is set to the same speed as the traveling speed of the web W, so that the web W is appropriately cut without being damaged. Can do. Further, when the saw blade 36a of the saw cylinder 36 is not in contact with the web W, the peripheral speed of the saw cylinder 36 is set to be higher or lower than the traveling speed of the web W, so that it is appropriate for the length of the signature F. The cutting position can be adjusted.

In the printing apparatus of this embodiment, the

impellers

52 and 62 receive the signature F formed by the cutting apparatus 34, and the conveyance apparatus 16 that stacks and conveys the conveyance lines L1 and L2 is provided. When the length of the signature F is changed by the cutting device 34, the rotational phase and the rotational speed of the

impellers

52 and 62 are changed according to the length of the signature F. Accordingly, when the length of the signature F by the cutting device 34 is changed, the length of the signature F is changed by changing the rotational phase and the rotational speed of the

impellers

52 and 62 according to the length of the signature F. Even if is changed, the

impellers

52 and 62 can properly receive the signature F and stack them on the transport lines L1 and L2.

In the printing apparatus according to the present embodiment, the print control unit 111 sets an image to be printed by the printing machine 12 according to print information, and sets the length of the signature F to be cut by the saw cylinder 36 and the receiving cylinder 37. At this time, the printing timing is set by the printing machine 12 based on the cross cutting position of the web W by the saw cylinder 36 and the receiving cylinder 37. Therefore, when printing the signature F having a length different from the previous time, the printing machine 12 sets the printing timing based on the cross cutting position of the web W by the saw cylinder 36 and the receiving cylinder 37, and the printing machine 12 It is possible to simplify the structure by eliminating the need for a device for changing the path length of the web W between the folding machine 14.

In the printing apparatus according to this embodiment, the folding device F formed by the cutting device 34 and the transport device 16 having a plurality of transport lines L1 and L2 that stack and transport a predetermined number of signatures F formed by the cutting device 34. Is assigned to one of the plurality of transport lines L1 and L2, and the printing control unit 111 assigns the sorter 15 according to a predetermined number of copies set independently for each of the transport lines L1 and L2. By controlling this operation and distributing to a plurality of conveyance lines L1, L2, different numbers of signatures F are discharged from the plurality of conveyance lines L1, L2. Accordingly, since the printing control unit 111 operates the sorting device 15 according to a predetermined number of copies, only the same number of signatures F are sorted into the transport lines L1 and L2, and the cam mechanism of the sorting device 15 or the like Without changing the setting, a different number of signatures F can be discharged from the transport lines L1 and L2, thereby improving the productivity of the printing work.

In the printing apparatus of this embodiment, the print control unit 111 counts the signature F1 (the signature F2) formed by the cutting device 34 by cutting the web W, and the count number of the signature F1 is set in advance. When the predetermined count is reached, the signature F1 is changed to the signature F2, so that the sorting device 15 switches the output destination of the signature F2 between the first transport line L1 and the second transport line L2. I have to. Therefore, it is possible to continuously perform the printing operation without stopping the paper feeding device 11, the printing machine 12, and the folding machine 14.

In the printing apparatus of the present embodiment, an ink jet printer is used as the printer 12. Therefore, simplification and cost reduction of the device can be achieved.

In the above-described embodiment, the sorting device 15 is provided on the downstream side of the cutting device 34, and the two transport lines L 1 and L 2 are provided as the transport device 16 on the downstream side of the sorting device 15. It is also possible to provide a sorting device that provides only one transport line on the downstream side and sorts different printed materials on the downstream side of the transport line.

In the above-described embodiment, when the predetermined printed matter reaches the predetermined number of copies, the printing machine 12 prints the printed matter having a different length. However, the printing press 12 alternately prints the printed matter having a different length by a predetermined number of copies. You may comprise.

DESCRIPTION OF SYMBOLS 11 Paper feeder 12 Printing machine 13 Web pass apparatus 14 Folding machine 15 Sorting apparatus 16 Conveyance apparatus 34 Cutting apparatus 36 Saw cylinder 36a Saw blade 37 Receiving cylinder 101 Paper feed control part 102 Printing machine control part 103 Web path control part 104 Trimming Control unit 105 Distribution control unit 106 Folding machine conveyance control unit 107 Impeller control unit 108 Conveyor control unit 111 Print control unit (control device)
112 Input part L1, L2 Conveyance line W Web F, F1, F2 Eclectic G, G1, G2 Eclectic bundle

Claims

A paper feeding unit that feeds a web from a web,
A digital printing machine capable of continuously printing different images on the web supplied from the paper supply unit;
A folding machine that folds a web printed by the digital printing machine and forms a crease of a predetermined length by cross-cutting with a saw cylinder and a receiving cylinder;
A control device capable of changing the length of the signature by adjusting the rotation speed of the saw cylinder according to the print information of the printed matter to be printed;
A printing apparatus comprising:
The saw cylinder and the receiving cylinder can be driven and rotated independently by a driving device different from a web conveying device, and the control device can control the saw when the saw blade of the saw cylinder cuts the web. The circumferential speed of the cylinder is the same as the traveling speed of the web, and when the saw blade of the saw cylinder is not in contact with the web, the circumferential speed of the saw cylinder is higher or lower than the traveling speed of the web. The printing apparatus according to claim 1.
When the impeller formed by the folding machine is received by an impeller and stacked and transported on a transportation line, a transport device is provided, and when the length of the signature is changed by the folding machine, The printing apparatus according to claim 1, wherein a rotation phase and a rotation speed of the impeller are changed according to a length of the signature.
The control device sets an image to be printed by the digital printing machine according to the print information, and sets a length of a signature to be cut by the saw cylinder and the receiving cylinder. The printing apparatus according to any one of claims 1 to 3, wherein a printing timing of the digital printing machine is set based on a cross cutting position of the web by the receiving cylinder.
A conveying device having a plurality of conveying lines that stack and convey a predetermined number of signatures formed by the folding machine, and a sorting device that distributes the signatures formed by the folding machine to any of the plurality of conveying lines And the control device controls the operation timing of the sorting device according to the number of copies of the signature and distributes it to the plurality of transfer lines, so that a different number of signatures can be separated from the plurality of transfer lines. The printing apparatus according to claim 1, wherein the printer is discharged.
The control device counts the signatures formed by the folding machine crossing the web, and when the count number of signatures reaches a predetermined count number set in advance, the sorting device controls the folding device. The printing apparatus according to claim 5, wherein the output destination is switched to another conveyance line.
The printing apparatus according to any one of claims 1 to 6, wherein the digital printing machine includes an ink jet printing machine.