JP2000309086A - Rotary printing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a degree of freedom in the installation space of an added processing unit without taking the power or the like of an already installed main motor under consideration by synchronously controlling the processing cylinder of the processing unit and the plate cylinder of a printing unit in such a manner that the phases may agree by a phase signal of the plate cylinder by a rotating signal from the rotation of a line shaft. SOLUTION: A pulse generator(PG) 3 outputs a rotating signal including the phase information of a line shaft 2, to a motion controller(MC) 4, and the MC 4 outputs an operation signal to a servo-driver(SD) 5. The SD 5 drives a servo motor 6 by the operation signal of the MC 4, and the motor 6 rotate- drives the plate cylinder of an added printing unit(AU) 4U. The phase of the plate cylinder of the AU 4U is output to the MC 4 from a PG 7, and the MC 4 controls the SD 5 in such a manner that the phase of the plate cylinder of the AU 4U and the phases of already installed units 1U,... which are output by the PG 3 may not disagree. By this constitution, a degree of freedom in the installation space of the AU can be increased without requiring to take the power or the like of the already installed main motor under consideration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention belongs to the technical field of a rotary printing press. In particular, the present invention relates to a rotary printing press in which a line shaft drive type printing unit and a section drive type processing unit are combined.

[0002]

2. Description of the Related Art In a conventional gravure printing machine, a plurality of printing units are driven by one common main motor (main motor). The rotation of the main motor is transmitted to a line shaft (main driving shaft) provided so as to penetrate each printing unit. Each printing unit is driven by mechanical coupling with its line shaft via a clutch. Therefore, the rotation of the plate cylinder of each printing unit is mechanically synchronized, and the phases of the plate cylinders are maintained in a constant relationship. Registration in overprinting is performed by changing the path length of the web transfer between the printing units. This change in path length is performed by adjusting the position of the compensator roller.

[0003] When a printing unit is added to such a rotary printing press of the line shaft drive type, conventionally, a printing unit which is added by extending a line shaft is driven. FIG. 2 shows a configuration diagram of a rotary printing press in which printing units are added by a conventional method. In FIG. 2, a first printing unit U1, a second printing unit U2, and a third printing unit U3 are existing printing units. Third
The printing unit U3 and the fourth printing unit U4 are printing units added downstream of these printing units. The line shaft is extended as shown by the broken line, and the additional printing unit is driven by the existing main motor.

[0004]

When the number of printing units is increased as described above, the torque and power of the main motor are required for the additional printing units, and the torque and power of the existing main motor are insufficient. Need to replace the main motor. In addition, when the line shaft passes through an underground pit, it is necessary to construct a new pit, which increases the cost of expansion. In addition, the transmission characteristics of the line shaft are required to be linearly extended, and the printing unit to be added cannot be freely arranged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to eliminate the need to consider the torque and power of an existing main motor, and to increase the degree of freedom in the installation space of an additional machining unit. An object of the present invention is to provide a rotary printing press that can be enlarged.

[0006]

The above-mentioned problems are solved by the present invention described below. That is, a rotary printing press according to claim 1 of the present invention is a rotary printing press having a line shaft drive type printing unit and a sectional drive type processing unit, and includes a rotation detection unit, a plate cylinder rotation calculation unit, , Synchronous control means, wherein the rotation detecting means detects the rotation of the line shaft and outputs a rotation signal, and the plate cylinder rotation calculating means inputs the rotation signal and outputs a phase signal of the plate cylinder The synchronous control means receives the phase signal and performs synchronous control so that the phase of the processing cylinder of the section drive type processing unit and the phase of the plate cylinder of the line shaft drive type printing unit match. It is.

According to the present invention, the rotation of the line shaft is detected by the rotation detecting means, a rotation signal is output, the rotation signal is input by the plate cylinder rotation calculating means, the phase signal of the plate cylinder is output, and the synchronization control means is output. Synchronous control is performed so that the phase signal is input and the phase of the processing cylinder of the section drive type processing unit matches the phase of the plate cylinder of the line shaft drive type printing unit. The configuration of the rotary printing press of the present invention has a configuration in which a processing unit of a sectional drive system is added to an existing printing unit of a line shaft drive system. That is, the additional processing unit does not need to be driven by the line shaft, and is driven by an independent dedicated motor. The phases of the processing cylinder and the plate cylinder are electrically controlled synchronously. Therefore, it is not necessary to consider the torque and power of the existing main motor, and a rotary printing press that can increase the degree of freedom in the installation space of the additional processing unit is provided.

According to a second aspect of the present invention, there is provided a rotary printing press according to the first aspect, wherein the processing unit is a printing unit, and the processing cylinder is a plate cylinder. . ADVANTAGE OF THE INVENTION According to this invention, there is no need to consider the torque and power of the existing main motor, and the rotary printing press which can increase the degree of freedom in the installation space of the additional printing unit is provided.

[0009]

Next, the present invention will be described with reference to embodiments. FIG. 1 shows the configuration of a rotary printing press according to the present invention. In FIG. 1, only a printing unit of the rotary printing press is shown, and a paper feeding unit and a paper discharging unit are omitted. In FIG. 1, 1 is a main motor, 2 is a line shaft, 3 is a pulse generator, 4 is a motion controller, 5
Is a servo driver, 6 is a servo motor, 7 is a pulse generator, 8 is a servo driver, 9 is a servo motor, 1
0 is a pulse generator, 1U is a first printing unit, 2
U is the second printing unit, 3U is the third printing unit, 4U
Denotes a fourth printing unit, and 5U denotes a fifth printing unit.

The first printing unit 1U, the second printing unit 2U, and the third printing unit 3U are existing printing units, and the plate cylinder of each printing unit is driven by the main motor 1 via the line shaft 2. The fourth printing unit 4U and the fifth printing unit 5U are additional printing units, and the plate cylinder of the fourth printing unit 4U has a servomotor 6
Thus, the plate cylinder of the fifth printing unit 5U is driven by the servomotor 9.

The main motor 1 rotates the line shaft 2 by a transmission means such as a V-belt. The line shaft 2 is provided through the existing printing units 1U, 2U, and 3U, and transmits rotation to an axis orthogonal to the line shaft 2 via a bevel gear (bevel gear) or the like. The orthogonal axes are the existing printing units 1U, 2U, 3
There is an equal number corresponding to U, each of which is directed to a respective printing unit 1U, 2U, 3U and which rotates the plate cylinder via a clutch.

The pulse generator 3 includes a line shaft 2
And outputs a rotation signal. The rotation signal includes phase information, that is, information on the rotation angle of the line shaft 2. For example, a pulse signal (or a rectangular signal) output for each predetermined unit angle obtained by equally dividing one rotation
And a pulse signal (or rectangular signal) output at a predetermined angle (reference angle) in one rotation. This configuration corresponds to pulse generators 7 and 10 described later.
The same applies to.

The motion controller 4 receives the rotation signal output from the pulse generator 3, monitors the phase of the rotation of the line shaft 2, and outputs an operation signal to the servo drivers 5 and 5. The operation signal is generated so that the rotations of the plate cylinders of the additional printing units 4U and 5U, which are rotationally driven by the servo motors 6 and 7, coincide with the rotations of the plate cylinders of the existing printing units 1U, 2U and 3U in phase. Operation signal.

The servo driver 5 monitors the operation of the servo motor 6 by inputting a rotation signal of the servo motor 6 from the pulse generator 7, and controls the servo motor 6 according to an operation signal output by the motion controller 4. The servo motor 6 is driven to operate.

The servo motor 6 rotates the plate cylinder of the additional printing unit 4U. The servo motor 6 and the plate cylinder are mechanically connected, and there is no phase shift between the phase of the servo motor 6 and the phase of the plate cylinder of the additional printing unit 4U. Therefore, the phase of the plate cylinder of the additional printing unit 4U rotated and driven by the servo motor 6 can be monitored (monitored) by the rotation signal output from the pulse generator 7 that detects the rotation of the servo motor 6.

The rotation signal output by the pulse generator 7 is output to the servo driver 5 and also to the motion controller 4. Therefore, the motion controller 4 monitors the phase of the plate cylinder of the additional printing unit 4U. The motion controller 4 compares the phase of the plate cylinder of the additional printing unit 4U with the phases of the existing printing units 1U, 2U and 3U calculated from the rotation signal output from the pulse generator 3 so that no phase shift occurs. To the servo driver 5
Output to

Similarly, the servo driver 8 monitors the operation of the servo motor 9 by inputting a rotation signal of the servo motor 9 from the pulse generator 10 (monitor).
At the same time, the servo motor 9 is driven so that the servo motor 9 operates according to the operation signal output by the motion controller 4.

The servo motor 9 drives the plate cylinder of the additional printing unit 5U to rotate. The servomotor 9 and the plate cylinder are mechanically connected, and a correspondence is established between the phase of the servomotor 9 and the phase of the plate cylinder of the additional printing unit 5U without any phase shift. Therefore, the phase of the plate cylinder of the additional printing unit 5U rotated and driven by the servomotor 9 is determined by the pulse generator 1 which detects the rotation of the servomotor 9.
It can be monitored (monitored) by the rotation signal output by 0.

The rotation signal output from the pulse generator 10 is output to the servo driver 8 and also to the motion controller 4. Therefore, the motion controller 4 monitors the phase of the plate cylinder of the additional printing unit 5U. Motion controller 4
Compares the phase of the plate cylinder of the additional printing unit 5U with the phases of the existing printing units 1U, 2U, and 3U calculated from the rotation signal output from the pulse generator 3, and performs control so that a phase shift does not occur. The signal is output to the servo driver 8.

As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the embodiments, and can be implemented in various forms based on the technical idea of the present invention. It goes without saying that it is included in the invention. For example, a speed command is input from a controller controlling a line shaft drive type printing unit to a phase synchronization control controller, and a plate cylinder phase obtained by calculating from a signal output from a phase detector provided on the line shaft is obtained. By using only phase correction, phase control with higher accuracy can be performed. Further, for example, the unit added to the rotary printing press is not limited to the gravure printing unit. Any processing unit of a sectional drive system (for example, a coating unit, a folding unit, an embossing unit, etc.) may be used.

[0021]

As described above, according to the rotary printing press according to the first aspect of the present invention, it is not necessary to consider the torque and power of the existing main motor, and the degree of freedom in the installation space of the additional processing unit is reduced. A rotary printing press that can be enlarged is provided. As described above, according to the rotary printing press according to the second aspect of the present invention, it is not necessary to consider the torque and power of the existing main motor, and the degree of freedom in the installation space of the additional printing unit can be increased. A rotary printing press is provided.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a rotary printing press of the present invention.

FIG. 2 is a diagram illustrating a configuration of a rotary printing press in which printing units are added by a conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main motor 2 Line shaft 3 Pulse generator 4 Motion controller 5 Servo driver 6 Servo motor 7 Pulse generator 8 Servo driver 9 Servo motor 10 Pulse generator 1U 1st printing unit 2U 2nd printing unit 3U 3rd printing unit 4U 4th printing unit 5U 5th printing unit

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tsutomu Utsumi 1-1-1 Ichigaya Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. F-term (reference) 2C034 AA21 AB01 AB06 AB10 AB13 AB14 AC01 2C250 EA04 EA06 EA10 EA42 EA43 FB06 5H572 AA06 BB10 EE01 GG01 GG06 HC07 LL33 MM09

Claims (2)

[Claims] 1. A rotary printing press having a line shaft drive type printing unit and a sectional drive type processing unit, comprising: a rotation detection unit; a plate cylinder rotation calculation unit; and a synchronization control unit. The rotation detecting means detects the rotation of the line shaft and outputs a rotation signal, the plate cylinder rotation calculating means inputs the rotation signal and outputs a phase signal of the plate cylinder, and the synchronization control means outputs the phase signal. A rotary printing press, which receives a signal and performs synchronous control so that the phase of the processing cylinder of the section drive type processing unit and the phase of the plate cylinder of the line shaft drive type printing unit match. 2. The rotary printing press according to claim 1, wherein the processing unit is a printing unit, and the processing cylinder is a plate cylinder.