JPH11198353A - Rotary printing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out the printing preparation for a following job even during the printing for a printing unit stopping the operation to improve productivity and saving labor. SOLUTION: Plate cylinder driving servo motors 101 -106 are provided on respective printing units, and servo controllers 231 -236 controlling the driving of the servo motors independently are provided. Also a printing unit selection section (an input device 27) for specifying a printing unit or units carrying out the printing and non-printing unit or units not carrying out the printing out of all the printing units is provided. Also specifying operation for these are carried out respective printing unit groups grouped for apportionment of printings.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary printing press for performing multi-color gravure printing and the like, and more particularly to a rotary printing press capable of improving productivity by shortening a printing preparation time and saving labor.

[0002]

2. Description of the Related Art A gravure rotary printing press includes a plurality of printing units each having a plate cylinder, an impression cylinder, and a guide roller, a web unwinding section and an infeed section, and a web outfeed section and a web winding section. They are arranged in a line.

[0003] In a conventional gravure rotary printing press, a conduction shaft extends across each printing unit, and a plate cylinder rotation shaft of each printing unit is connected to this conduction shaft via a gear or the like, and the conduction shaft is connected to each printing unit. In this structure, the plate cylinders of the printing units are mechanically and synchronously rotated at the same time by being rotationally driven by a driving motor common to the printing units.

[0004]

By the way, in printing with a gravure rotary printing press, the number of colors at the time of printing is often changed for each JOB, and there are printing units that are suspended even during printing. However, in a conventional gravure rotary printing press, even in a printing unit at rest, the plate cylinder rotating shaft is always synchronously rotated via the transmission shaft, so that printing preparation for the next job is performed during printing (for example, , Mounting the plate cylinder,
Installation of ink pans used for printing, preparation of ink, etc.).

[0005] For this reason, the job being printed must start preparing for printing the next job after the printing is completed, resulting in a decrease in productivity. Therefore, in order to increase productivity, the number of operators is increased and the next J
The method of starting OB was adopted, but in this case,
Many operators are required.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional drawbacks, and to make it possible to prepare a next printing job for a printing unit that is at rest, even during printing, thereby improving productivity and saving labor. To provide a rotary printing press that achieves the above.

[0007]

According to a first aspect of the present invention, there is provided a rotary printing press having a plurality of printing units each having a plate cylinder, an impression cylinder, and a guide roller in a row. The plate cylinder driving servomotors provided, and the plate cylinder driving servomotors provided separately for each of these plate cylinder driving servomotors and having an independent position loop for each plate cylinder driving servomotor of each printing unit. A servo controller for controlling the rotation of the servo motor for
Among the plurality of printing units, a printing unit that performs printing, a printing unit selection unit that specifies a non-printing unit that does not perform printing, and a servo of a printing unit that is specified to perform printing by the printing unit selection unit. And an integrated control unit that outputs a command signal for each controller and integrates and drives these servo motors synchronously. In the above, the arrangement number of the plurality of printing units is not limited, and a desired multi-color printing (for example, 6
Color, eight colors, etc.).

According to this invention, if the printing unit selection unit specifies the printing unit that performs printing and the non-printing unit that does not perform printing, the execution of printing is specified. A command signal is output only to the servo controller of the printing unit, and these servo motors are integrally driven synchronously. Therefore, for the printing unit for which the execution of printing is specified, the plate cylinder can be rotated synchronously, and high quality printing can be performed.
On the other hand, for the non-printing unit that does not perform printing, the plate cylinder rotation axis is not rotated, so that it is possible to prepare for the next JOB printing even during printing for the paused printing unit that was impossible with the conventional rotary printing press. In addition, productivity can be improved and manpower can be saved. This is effective when several printing units are selected and used in straight printing.

[0009] The invention according to claim 2 provides a plate cylinder,
In a rotary printing press having a plurality of printing units provided with an impression cylinder and guide rollers in a row, a plate cylinder driving servomotor provided for each printing unit and a printing cylinder driving servomotor provided separately for each of the printing cylinders are provided. A plate cylinder servo controller that has a position loop independent for each plate cylinder drive servomotor of each printing unit and controls the rotation of the plate cylinder drive servomotor; A grouping input unit for specifying a combination of a plurality of grouped printing units for printing, a printing unit for performing printing for each printing unit group grouped by the grouping input unit, and no printing Grouping by the printing unit selection unit for specifying non-printing units and the groove division input unit For each printing unit group,
And an integrated control unit that outputs a command signal to each servo controller of the printing unit designated to execute printing within each group, and integrates and synchronously drives these servo motors for each group. It is characterized by having.

[0010] According to this invention, if a printing unit that performs printing and a non-printing unit that does not perform printing are designated for each group divided for distributed printing, printing is performed for each group. The command signal is output only to the servo controller of the printing unit in which the execution of is performed, and these servo motors are integratedly driven synchronously for each group. Therefore, for each group, a printing unit that performs printing and a non-printing unit that does not perform printing can be selected. The next job can be prepared for printing, and productivity can be improved and labor can be saved.

According to a third aspect of the present invention, in the rotary printing press according to the second aspect, the groove division input unit and the printing unit selection unit are configured by one input device. I do. According to such an invention, a single input device can serve both as the groove division input section and the printing unit selection section, so that the configuration can be made compact and economical.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
It will be described based on. FIG. 1 is a rotary printing press according to the present invention.
6-type straight gravure rotary printing press to which is applied
ing. The gravure rotary printing press 1 is arranged in one row
6 printing units 2₁~ 2₆With straight printing
(The web is printed by these printing units 2₁~ 2₆Continuously
6-color printing. Printing unit 2
₁The first unwinding part 3 is on the upstream side (the left side in FIG. 1).₁And the second
1 infeed section 4₁And the first outfeed section 5₁When,
First winding unit 6₁And are arranged. In addition, printing unit
Set 2₆The second unwinding section 3 is located downstream (right side in FIG. 1) of the_Two
And the second infeed section 4 _TwoAnd the second outfeed section
5_TwoAnd the second winding unit 6_TwoAnd are arranged.

[0013] Each printing unit 2 ₁ to 2 _6, the plate cylinder 7 constituting each printing unit, a plurality of guide rollers 9 of the impression cylinder 8 and free rotation is provided, the plate for driving the plate cylinder 7 cylinder drive servo motor 10 ₁ to 10 ₆ is provided through the transmission gear (not shown). These servo motor 10 ₁ to 10 _6, each of the printing units 2 ₁ to 2 ₆
Can be driven independently of each other.

FIG. 2 shows a control system of the gravure rotary printing press 1. The drive control device 20 includes a DSP (digital signal processor) unit 2 that operates as an integrated control unit.
1, a memory unit 22 for storing various data, a plate cylinder servo controller (control circuit) 23 ₁ to 23 _6, a first tension control unit 25 ₁ and the second tension control unit 25
₂ and an input / output I / F (interface) unit 26.

An input / output I / F unit 26 includes an input device 27 that constitutes a grouping input unit and a printing unit selection unit.
And a display device 28 such as a CRT. As shown in FIG. 3, the input device 27 includes “0”, “1”,
"9" numeric keypad, clear key "C" and input key "input", and cursor movement keys "←""↑""→"
"↓", a print end key "end", and a next JOB selection key "next JOB selection" are arranged. "0"
"1" numeric keypad to "9", the clear key "C" and input key "Input" of the printing units 2 ₁ to 2 _6, designation of a non-printing unit not to be printed and the printing unit to perform printing, For distributed printing, it is possible to specify a combination of printing units in a group and specify a printing unit that performs printing and a non-printing unit that does not perform printing in the group.

As shown in FIGS. 4A and 4B, the memory section 22 is provided with a straight printing table 22A and a sorting printing table 22B.
In the straight printing table 22A, a printing unit number for executing printing corresponding to each JOBNO and a non-printing unit number for not performing printing are stored. In the distribution printing table 22B, for each of the groups 1 and 2 grouped for distribution printing,
A printing unit number that executes printing corresponding to JOBNO
And the non-printing unit NO that does not perform printing are stored.

The DSP unit 21 receives a job from the input device 27
When the NO, the printing unit NO, and the non-printing unit NO are input, these data are stored in the straight printing table 22A and the sorting printing table 22B according to the work content. Further, operation command from the printing press control device 40, the speed command is given, if the straight printed, the plate cylinder servo controller 23 _1-23 simultaneously alone position command to ₆ (rotation angle of the printing unit NO for executing printing ) Give the signal. Furthermore, in the case of distributing printed for each grouped printing unit group plate cylinder servo controller 23 _{1-23 6,} and the plate cylinder servo controller 23 ₁ of the printing unit execute the specified print out in the group to 23 gives the position command signal to _6.

Further, DSP unit 21, the constant-speed operation maintaining time interval corresponding to the speed command, continuously generates a position command signal to the servo controller 23 _{1-23 6.} At this time, each plate cylinder 7 is synchronized by software of the DSP unit 21.
Maintain synchronization. During acceleration and deceleration, a position command signal is continuously generated while maintaining a change rate according to a predetermined target angular acceleration according to an acceleration time and a deceleration time.
Synchronization of each plate cylinder 7 is maintained by software synchronization of the SP unit 21.

Each plate cylinder servo controller 23₁~ 23
₆Has a software servo function.
The speed command signal is given as the control target value, and
Data 10 ₁-10₆Encoder 1 connected to the shaft end of
2₁~ 12₆More rotation angle signal and position feedback signal
Input at a fixed cycle (servo system sampling cycle)
Position loop 32₁~ 32₆Servo motor 10₁~
10₆Drive signal to each server in order to
Bomota 10₁-10₆Servo amplifier 30₁~ 30₆Out to
Press each servo motor 10₁-10₆Speed control in parallel
Manage.

The first tension control unit 25 ₁ synchronizes with a command signal to the plate cylinder servo controller of the printing unit group 1 for grouping printing.
It is driven synchronously by a tension control command signal from the DSP unit 21. That is, the tension control unit 25 ₁
Based on the tension control command signal from P21, the first
Unwinding unit 3 _1, first infeed section 4 _1, first outfeed part 5 _1, outputs a drive signal to the first take-up section _61, first
Unwind part 3 ₁ of the drive motor and the speed difference between the first infeed portion 4 ₁ of the drive motor, and the first outfeed part 5 ₁
The drive motor and the first take-up section ₆₁ of the speed difference between the drive motor, performs tension control of the printing unit group 1, which is distributed.

The second tension control unit 25 _2, synchronized with the grouped command signal for the plate cylinder servo controller of the printing unit group 2 for distributing printing,
It is driven synchronously by a tension control command signal from the DSP unit 21. That is, the second tension control unit 25 ₂
Based on the tension control command signal from the DSP 21,
Second unwinding unit 3 _2, second infeed section 4 _2, a second outfeed part 5 _2, it outputs a drive signal to the second take-up section 6 _2,
Second unwinding unit 3 _second driving motor and the second infeed section 4 ₂
Speed difference between the drive motor and the second out-feed portion 5 ₂ of the drive motor and the second take-up section 6 ₂ of the speed difference between the drive motor, performs tension control of the printing unit group 2, which is distributed.

Next, the operation of the present embodiment will be described. (In the case of straight printing) First, in the input device 27, a printing unit for performing printing and a non-printing unit for not performing printing are specified. For example, the input device 27, JOB "1" printing unit: first printing unit to the fourth printing units 21 _{to 24} non-printing units: fifth printing unit to sixth printing unit 2 ₅ to 2 ₆ JOB "2" printing unit: fourth printing units to sixth printing unit 2 _{4-2 6} non-printing units: When inputting the first printing unit to third printing unit 2 ₁ to 2 _3, for these data straight printing of the memory section 22 This is stored in the table 22A (see FIG. 4A).

The DSP unit 21 calculates the job "1"
The first printing unit to the fourth printing units 21 _{to 24} of the plate cylinder servo controller 23 _{1-23 4} performs synchronous drive by software synchronization by operation command, the speed command from the printing press control device 40. During this time, for the fifth printing unit to the sixth printing unit ₂₅ to ₂₆ which are non-printing units, printing preparation such as installation of a plate cylinder for next job "2", installation of an ink pan, and preparation of ink is performed.

[0024] After JOB printing end of the "1", the fourth printing unit 2 ₄ only, ink wash, after performing the removal of the ink pan, such as the removal of the plate cylinder and, JOB "2"
Preparation of printing such as installation of plate cylinder for printing, installation of ink pan and preparation of ink. After start of printing JOB "2", the first printing unit 2 _first to third printing unit 2 ₃ performs ink washing, removal of the ink pan, the removal of the plate cylinder.

[0025] The operation switch necessary for these preparations (driving, stop, alarm, speed setting, etc.), etc., although not shown here, each of the printing units 2 ₁ to 2 ₆
It is provided for each. Furthermore, JOB "3", JOB
By inputting and setting the jobs to be sequentially printed as "4"..., The next job can be similarly prepared during printing.

(In the case of sorting printing) First, the input device 2
7, a printing unit that performs printing for each of the allocation groups while specifying a combination of printing units for grouping in order to perform distributed printing;
Specify a non-printing unit that does not perform printing. For example, the first printing unit to the fourth printing units _{21 to 24} group 1, the fifth printing unit to sixth printing units 2 ₅ -
₂₆ is group 2, and among the printing units in each of the groups 1 and 2, a printing unit and a non-printing unit are selected as follows.

Group 1: First printing unit to fourth printing unit 2 ₁
To 2 ₄ JOB "11" printing unit: first printing unit to third printing unit 2 ₁ to 2 ₃ Non-printing units: a fourth printing unit 2 ₄ JOB "12" printing unit: third printing unit to the fourth printing unit 2 ₃ 21 to ₂₄ non-printing units: first printing unit - the second printing unit 2 ₁ to 2 ₂

Group 2: Fifth printing unit to Sixth printing unit 2 ₅
~ ₂₆ JOB "21" printing unit: fifth printing unit ₂₅ non-printing unit: sixth printing unit ₂₆ JOB "22" printing unit: sixth printing unit ₂₆ non-printing unit: fifth printing unit ₂₅

In the group 1 thus sorted, the web fed out from the _first unwinder 31 is the first web.
Infeed unit 4 _1, the printing unit ₂₁ to _24, wound on the first take-up section ₆₁ sequentially passes through the first outfeed part 5 _1. Also, in group 2, the web fed out of the second unwinding unit 3 _2, second infeed section 4 _2, the printing unit 2 _{5-2 6,} Volume 2 by a second outfeed part 5 ₂ sequentially pass wound on take part 6 _2.

The DSP 21 displays the contents of the distribution printing table 22B of the memory unit 22 on the display device 28 (FIG. 5).
On the other hand, a command signal is output for each servo controller of the printing unit group divided into groups.
That is, for the group 1, the plate cylinder servo controllers 23 of the _first to _third printing units 21 to 23 are arranged.
Against _{1-23 3} performs synchronous drive by software synchronization by operation command, the speed command from the printing press control device 40. For Group 2, with respect to the plate cylinder servo controller 23 ₅ of the fifth printing unit 2 ₅ performs synchronous drive by software synchronization by operation command, the speed command from the printing press control device 40. During this time, the fourth printing unit is a non-printing unit, the sixth printing unit 2 _4, 2 _6, the mounting of the plate cylinder for the next JOB, mounting of the ink pan, the print preparation such as preparation of ink performed.

Thus, the job in group 1
"12""13""14" ... JOB in group 2
Printing is sequentially performed in the order of “22” “23” “24”.

According to such an embodiment, the following effects can be expected. The plate cylinder 7 of each printing unit 2 ₁ to 2 ₆ causes each plate cylinder driving servo motor 10 ₁ to 10 ₆ independently driven, the input device 27, among the plurality of printing units 2 ₁ to 2 ₆ If you specify the printing unit that performs printing and the non-printing unit that does not perform printing,
A command signal is output only to the servo controller of the printing unit designated to execute printing, and these servo motors are integrated and driven synchronously. Therefore, for the printing unit for which the execution of printing is specified, the plate cylinder 7 can be rotated synchronously, so that high quality printing can be performed.

On the other hand, the non-printing unit that does not perform printing does not rotate the plate cylinder rotating shaft of the plate cylinder 7, so that the printing unit that is not in use in the conventional rotary printing press cannot be used. It is possible to prepare for printing of the job (mounting of the plate cylinder 7, mounting of an ink pan used for printing, preparation of ink, etc.), thereby improving productivity and saving manpower. This can be expected to be effective when several printing units are selected and used in straight printing.

Further, for each printing unit group grouped for distributed printing, a printing unit for executing printing and a non-printing unit for not performing printing are designated, and execution of printing is designated for each group. Command signal is output only to the servo controller of the printing unit, and these servo motors are integrated and synchronized for each group, so that the printing unit that performs printing and printing are not performed for each group. Since a non-printing unit can be selected, even in distributed printing, printing of the next job can be prepared for a paused printing unit even during printing, thereby improving productivity and saving manpower.

Further, since one input device 27 can be used as both the groove division input section and the printing unit selection section, the apparatus can be made compact and economical.

[0036] as well, in the present embodiment, since the transmission shaft is not required, the ink supply and maintenance tasks for each printing unit 2 ₁ to 2 ₆ can be performed with good operability without being disturbed by the transmission shaft. In addition, since the printing unit does not vibrate due to the vibration of the transmission shaft, a decrease in printing registration accuracy due to the vibration can be avoided, and high-quality printing can be performed.

The present invention is not limited to the above embodiment, but includes the following modifications as long as the object of the present invention can be achieved. For example, in the embodiment, the straight printing table 22A and the sorting printing table 22B are separately provided, but the straight printing table 22A may be omitted and only the sorting printing table 22B. In this case, if all the printing units 2 ₁ to 2 ₆ with one group, it is possible to perform straight printing.

Further, in the above-described embodiment, in the sorting printing, the printing job is divided into two groups.
The number of groups is arbitrary as long as it is two or more. in this case,
An unwinding section, an infeed section, an outfeed section, and a winding section may be provided for each group.

The impression cylinder 8 is in contact with the web,
Although the web rotates in accordance with the running of the web, the web may be independently driven for each printing unit similarly to the plate cylinder 7, and these may be synchronously controlled by the DSP 21.

The guide rollers 9 are also in contact with the web and rotate according to the running of the web. However, these guide rollers 9 are also allowed to rotate independently, and the plate cylinder 7 and the impression cylinder 8 are rotated. You may make it synchronize with a peripheral speed. In this case, the guide roller 9 and the plate cylinder 7 or the guide roller 9 and the impression cylinder 8 may be connected to each other, and the drive source of the plate cylinder 7 or the impression cylinder 8 may be used as the drive source of the guide roller 9.

[0041]

As described above, according to the rotary printing press of the present invention, a printing unit that performs printing and a non-printing unit that does not perform printing are specified among a plurality of printing units.
A command signal is output for each servo controller of the printing unit for which printing is specified, and these servo motors are integrated and driven synchronously.In other words, for non-printing units that do not perform printing, plate cylinder rotation Since the shaft is not rotated, it is possible to prepare for the printing of the next job even during printing for a paused printing unit, which was impossible with a conventional rotary printing press, thereby improving productivity and saving manpower.

For each group grouped for distributed printing, a printing unit for executing printing and a non-printing unit for not performing printing are specified, and printing is specified for each group. A command signal is output to the unit's servo controller, and these servo motors are integrated and driven synchronously for each group.Therefore, for each group, there is a printing unit that performs printing and a non-printing unit that does not perform printing. You can choose
Also in distributed printing, the printing unit in the paused state can be prepared for printing the next job even during printing, so that productivity can be improved and manpower can be saved.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a gravure rotary printing press according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a control system of the rotary printing press according to the present embodiment.

FIG. 3 is a diagram illustrating an input device according to the embodiment;

FIG. 4 is a diagram illustrating a straight printing table and a sorting printing table provided in a memory unit according to the embodiment.

FIG. 5 is a view showing a display example (display example at the time of sorting printing) of the display device of the embodiment.

[Explanation of symbols]

1 web offset press 2 ₁ to 2 ₆ printing units 7 plate cylinder 8 impression cylinder 10 ₁ to 10 ₆ edition for cylinder drive servo motor 12 ₁ to 12 ₆ encoder 21 DSP unit (integrated control unit) 22 memory unit 22A straight printing table 22B Distribution printing table 23 ₁ to 23 ₆ Plate cylinder servo controller 25 ₁ First tension control unit 25 ₂ Second tension control unit 27 Input device (grouping input unit, print unit selection unit) 30 ₁ to 30 ₆ Servo amplifier 32 _{1 to} 32 _6- position loop

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yoji Kamada 4-5676 Hibarigaoka, Zama City, Kanagawa Prefecture Toshiba Machine Co., Ltd. Sagami Office (72) Inventor Akira Watanabe 4-5676 Hibarigaoka, Zama City, Kanagawa Prefecture Toshiba Machine Co., Ltd. Inside Sagami Plant (72) Inventor Toshiya Saeki 4-5676 Hibarigaoka, Zama City, Kanagawa Prefecture Inside Sagami Plant Toshiba Machine Co., Ltd. (72) Kaoru Kumazawa 4-5676 Hibarigaoka, Zama City, Kanagawa Prefecture Toshiba Machine Co., Ltd.

Claims (3)

[Claims] 1. A rotary printing press having a plurality of printing units each including a plate cylinder, an impression cylinder, and a guide roller in a row, comprising: a plate cylinder driving servomotor provided for each printing unit; A servo controller that is provided separately for each plate cylinder drive servomotor, has a position loop that is independent for each plate cylinder drive servomotor of each printing unit, and controls the rotation of the plate cylinder drive servomotor; Among the plurality of printing units, a printing unit that performs printing, a printing unit selection unit that specifies a non-printing unit that does not perform printing, and a servo controller of the printing unit for which printing is specified by the printing unit selection unit And an integrated control unit that outputs a command signal every time and integrates and drives these servo motors synchronously. Rotary printing machine according to symptoms. 2. A rotary printing press having a plurality of printing units each having a plate cylinder, an impression cylinder, and a guide roller in a row, wherein a plate cylinder driving servomotor provided for each printing unit is provided. A plate cylinder servo controller that is provided individually for each plate cylinder drive servomotor and has a position loop independent for each plate cylinder drive servomotor of each printing unit and controls the rotation of the plate cylinder drive servomotor. A grouping input unit for specifying a combination of a plurality of grouped printing units for distributed printing among the printing units; and executing printing for each of the printing unit groups grouped by the grouping input unit. A printing unit to perform printing, a printing unit selection unit that specifies a non-printing unit that does not perform printing, and the groove A command signal is output for each printing unit group divided by the input unit and for each servo controller of the printing unit designated to execute printing in each group, and these servo motors are output for each group. A rotary printing press, comprising: an integrated control unit that performs integrated and synchronous driving. 3. The rotary printing press according to claim 2, wherein
The rotary printing press, wherein the groove division input unit and the printing unit selection unit are configured by one input device.