JPH0596714A - Registration controller having automatic registration correcting circuit - Google Patents

Abstract

PURPOSE:To adjust registration in peripheral and axial directions on driving and operating sides by operating a registration unit in the peripheral direction on the operating side with output signals from position detectors of three registration units in peripheral and axial directions on the driving side and in peripheral direction on the operating side thereby matching a registration unit in the peripheral direction on the driving side with a target value regardless of the operational sequence. CONSTITUTION:Registration amount in the peripheral direction on the operating side is displayed on a display 77 by means of a signal (j) or (e). For example, registration amount signals x, y, z in the peripheral and axial directions on the driving side are delivered from auxiliary contacts 72a, 71b, 72c by depressing a push button switch (depressing time and times) thereby producing an electric command. m, n, l, and j represent, respectively, the start/end and the moving amount of potentiometers 60G, 61G, 60H and the start/end and the moving amount of the aux. contact 72c functioning on an electric command fed from the push button switch with reference to each timing for transmitting rotational speeds of motors 73, 74 and a servo motor 76 required for further registration at the time of transmitting a registration amount signal (j) in the axial direction on the operating side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a register control device having an automatic register correcting circuit in a divided plate cylinder device of a rotary printing press.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a divided plate cylinder device (Japanese Patent Application No. 1-249867) of a rotary printing press to which the present invention is applied. In this divided plate cylinder device, a plate cylinder main body 34 on which a plate on the drive side is mounted is provided between frames 19 and 20 on the drive and operation sides of a printing unit provided in a rotary printing machine,
A shell 36, which is fitted into the small-diameter cylinder portion 35 of the plate cylinder body 34 so as to be rotatable and axially slidable, and which mounts a plate on the operating side, is arranged, and journals 37 on both sides of the plate cylinder body 34 are arranged.
And 38 for the drive and operating side frame 1 respectively
9 and 20 are rotatably and slidably supported in the axial direction,
The journal 37 of the plate cylinder main body 34 is provided with the gear 13 that engages in the rotational direction and slides in the axial direction to drive the plate cylinder main body 34 and the shell 36, and to the inner diameter portion 38a of the journal 38 of the plate cylinder main body, An adjusting shaft 40, which is attached so as to be rotatable and axially slidable and is connected to the shell 36 by a coupling member 39, is provided with the adjusting shaft 40 engaging in the rotating direction and sliding in the axial direction. The adjustment gear 42 and the transmission gear 41 that meshes with the adjustment gear 42 are fixedly provided in the journal 38 of the plate cylinder main body 34 so that the drive gear 13 and the adjustment gear 4
2 are attached to the respective driving and operating side register devices 17G and 17H in the circumferential direction, and the journal 37 and the adjusting shaft 40 of the plate cylinder main body 34 are respectively attached to the register devices 18G and 18G in the axial direction. It is connected to 18H. Therefore, the rotation of the driving helical gear 13 of the plate cylinder main body 34 is controlled by the journal 37, the plate cylinder main body 34, the small diameter drum portion 35, the journal 38, the transmission helical gear 41, and the adjusting helical gear 4.
2, the adjusting shaft 40 and the connecting member 39, and then the shell 36
Be transmitted to.

Next, the connection between the register devices 17G and 18G and 17H and 18H on the driving side and the operating side in the circumferential and axial directions is as follows. The drive helical gear 13 or the adjusting helical gear 42 is a bracket 43 fixed to the drive side or operation side frame 19 or 20, respectively.
Is attached so that it can slide in the axial direction with a key not shown in the figure.
Adjustment member 4 having threaded portion 47a via bearing 45
It is connected to 7. Accordingly, when the adjusting member 47 is rotated by the circumferential register device 17G or 17H, which is screwed with the adjusting member 47 and is rotatably supported by the bracket 43, the adjusting member 47 moves in the axial direction and the driving helical gear 13 or The adjusting helical gear 42 also moves in the axial direction. Therefore, the driving helical gear 13 or the adjusting helical gear 42 is rotated by the transmission helical gear 41 of the journal 38 connected to the helical gear 62 of the blanket cylinder or the driving source, and thus the plate cylinder main body 34. Alternatively, since the shell 36 also rotates via the adjusting shaft 40 and the connecting member 39, the plate cylinder main body 34 and the shell 36 can be aligned in the circumferential direction.

Next, the screw shaft 5 is mounted on the inner diameter of the journal 37 or the adjusting shaft 40 via bearings 50.
1 (51G and 51H) are attached. Therefore, the adjusting member 52, which is screwed to the screw shaft 51 and is rotatably supported by the bracket 43, is attached to the axial register device 18G or 1.
When the screw shaft 51 is moved in the axial direction by rotating it to 8H, the journal 37 or the adjusting shaft 40 is also moved in the axial direction.
Since it also moves in the axial direction, the axial registration of the plate cylinder main body 34 or the shell 36 can be performed.

Further, potentiometers 60G and 61G for detecting the amount of movement are provided at the shaft end of the drive side adjusting member 47G and the shaft end of the screw shaft 51G. Similarly, the potentiometers 60H and 61H are respectively provided on the operating side adjusting member 47H. And the screw shaft 51H.

[0006]

The above-mentioned prior art has the following problems. When the plate cylinder main body 34 (driving side) is registered in the circumferential direction, the journal 37 rotates, so that the shell 36 rotates in the drive path of the shell 36 and the circumferential direction of the shell 36 (operating side). After the registration is performed, the circumferential registration of the shell 36 changes by the circumferential registration amount of the plate cylinder body 34.

Further, at the time of axial registration of the plate cylinder main body 34,
Since the journal 37 moves in the axial direction, the small-diameter body 3
5, the journal 38 and the transmission helical gear 41 also move in the axial direction, and the adjusting helical gear 42 meshing with this also rotates, so that the shell 36 passes through the adjusting shaft 40 and the coupling member 39.
Also rotates. Therefore, the register in the circumferential direction of the shell 36 changes by the amount of this rotation. The axial registration of the shell 36 is not affected by the circumferential and axial registration of the plate cylinder body 34. Therefore, at present, the circumferential and axial registrations on the driving side are performed, and then the circumferential and axial registrations on the operating side are performed. Therefore, there is a demand for a control device that automatically returns the once adjusted register of the shell 36 even if the order of registration is incorrect. There is also a demand for shortening the registration time by simultaneously performing the driving and operating side registration.

An object of the present invention is to provide a control device for a divided plate cylinder that meets the above demands.

[0009]

[Means for Solving the Problems]

(1) The circumferential register device on the operating side is controlled by the output signals of the position detecting devices provided in the three register devices, the circumferential register and the axial register device on the driving side, and the register device on the operating side. Operate and adjust the circumferential register on the operating side to its target value. (2) The registration display in the circumferential direction on the operating side is performed by calculating the target value or the output signal of the position detection device provided in each of the three registration devices described in (1) above. (3) By the electric command instead of the push button or push bar, the above (1)
A feedforward control unit for correcting the term registration operation is provided.

[0010]

[Action]

(1) By the output signal of the position detecting device that has moved according to the target value of each of the three register devices, only the amount by which the register device in the circumferential and axial directions on the drive side is rotated or is rotating. Since the register device in the circumferential direction on the operating side is always rotated in the direction opposite to the direction in which it is rotated, the driving side and the operating side can be registered at the same time. Therefore, at the end of all the registrations, the target value of the register device in the circumferential direction on the operating side is adjusted. (2) The registration amount (marking value) issued to the circumferential register device on the operating side is displayed as is, but the register actually performed by the operating register device for registration. The calculated value based on the quantity is displayed. (3) The correction is quickly performed so that the operation of the servomotor provided with the circumferential register device on the operating side in the above item (1) is performed accurately.

[0011]

1 is a block diagram of a registration control device according to the present invention. A register control device 71 having an automatic register correction circuit commands a register amount (target value) to each of the register devices 17G, 18G and 17H by an auxiliary contact operated by an electric command device or the like instead of a push button or a push bar. Command device 7
2 (72a, 72b, and 72c), which are equipped with motors 73 and 74, respectively, for driving side circumferential and axial registration devices 17G and 18G, and an operating side circumferential registration device 17H provided with a servomotor 76. , Display device 77
(77a, 77b), main controller 78, servo amplifier 79, motors 73, 74, 75 and servo motor 7
Adjusting member 47G (see FIG. 3) operated by 6 and potentiometer 6 which is one of the position detecting devices attached to screw shafts 51G and 51H and adjusting member 47H, respectively.
It consists of 0G, 61G and 60H, and controls them comprehensively. The axial register device 18H on the operating side is the register device 1 due to the structure of the split plate cylinder device shown in FIG.
8H can set the register by the register device 18H independently without being affected by other register devices, so the register controller 17 of FIG.
Not included in.

Next, the main controller 78 includes adders P, Q, R and S, a feedforward controller T, a compensator U, an operating side circumferential direction target value calculator V, and a movement amount corrector α.
And feedforward control units ± A, ± B and ± C. The feedforward control unit may be omitted. Next, the control of the register control device 71 will be described. Signal m output from potentiometers 60G and 61G
The signal l output from the potentiometer 60H is put into the adding section P with a delay of a moment with the motor 7 and n.
Although the shell 36 is rotated by 3, 74, the servo motor 76 is not rotated. Therefore, the servo motor 76 is rotated in order to return the shell 36 to the state before the rotation. Is issued and the addition section Q is entered. Also, a target value (signal j) that commands the registration amount in the circumferential direction on the operating side
Is transmitted while the auxiliary contact 72C operated by the push button switch is being pushed down and enters the adding section Q via the target value calculating section V, so that the signals e and j are the times indicated by the signals e and j. The motion amount is compared and calculated in consideration of the directions of these rotation amounts,
The signal g is output and the output i enters the servo motor 76 from the servo amplifier 79 through the compensator U and the addition unit R directly or after the operation. Therefore, the servo motor 76 rotates at the speed calculated at the time of the feed-forward control as well as the post-operation, and this rotation amount is output as the potentiometers 60G and 61G and the target value in the circumferential direction on the operating side. The calculated signal, that is, the rotation amount (including direction) of the motors 73 and 74 in the circumferential direction, and the signal indicating the target in the operation side circumferential direction are calculated. Therefore, since the output of the potentiometer 60H indicating the movement of the servo motor 76 is compared and collated with this signal, the servo motor 76 has a target value j indicating the registration amount in the operation side circumferential direction and a drive side circumferential rotation amount m. It rotates in the designated direction by an amount including the correction amount n in the axial direction. In the signal n circuit, a correction value based on the helix angle θ of the transmission helical gear 41 (FIG. 3) is registered in the axial direction in order to convert the axial registration amount into the circumferential amount. A movement amount correction unit α that multiplies the amount is provided.

On the other hand, the motor 7 is driven by signals a, b and c from auxiliary contacts 72a, 72b and 72c which are activated by an electric command from a push button switch or the like of the command device 72.
Feedforward signal generators ± A, ± B, and ± for transmitting speed commands for operating the servomotors 3, 74 and the servomotor 76 to the adder R via the feedforward controller T.
The signal from C is collected in the feedforward control unit T, is calculated in consideration of the rotational speeds of the motors 73, 74 and the servomotor 76 and their directions (±), and is input to the addition unit R. The motor rotates at the calculated speed at a slightly delayed timing. In this way, the feedforward control unit T calculates the feedforward amount and time from the signals m, n and l of the three potentiometers 60G, 60H and 61G and the target value (signal j) in the circumferential direction on the operating side. It is provided so as to correct the operation of the servomotor 76 with the command value g obtained by the above-described calculation so as to perform the operation with high accuracy.

Next, the registration amount in the circumferential direction of the operating side is displayed on the display device 77 by the signal j or e. As an example, FIG. 2 shows signals of registration amounts (target values) in the drive side circumference and the axial direction, which are generated from auxiliary contacts 72a, 72b and 72c that are activated by an electric command such as pressing a push button switch (pressing time and number of times). The motors 73, 74 and the servomotor 7 which rotate for x, y and z, and also for the registration amount (target value) signal j in the axial direction of the operating side, are further rotated for each registration.
6 is a reference for each timing when transmitting the rotational speed, the start and end of the operation of each potentiometer 60G, 61G, and 60H, and the movement amount (including its direction) and an auxiliary contact that is activated by an electric command such as the push button switch described above. 72
Signals m, n, l, and j respectively indicating the start of operation of C and the movement amount (including direction) thereof, and the speed command synthesized by the addition unit R of the servo motor 76 of the register device 17H in the operating side circumferential direction. The state of the synthetic figure which shows the speed and direction of is shown.

[0015]

According to the register control device having the automatic register correcting circuit according to the present invention, each register on the driving side is aligned in the circumferential direction on the operating side when registering the driving side and the operating side in the circumferential direction and the axial direction. In the divided plate cylinder device of the rotary printing press, which affects the registration of the positions, the positions attached to each of the three register devices of the drive-side circumferential and axial register devices and the operating-side circumferential register device. By the output signal of the detector,
The following effects can be obtained by activating the circumferential register device on the operating side. (1) Circumferential register on the operating side by output signals of the position detecting devices provided in three register devices, the circumferential register and axial register on the driving side, and the circumferential register on the operating side. Regardless of the operating sequence, the register of the device can always be adjusted to the target value, and the circumferential and axial register adjustments on the drive and operating sides can be performed simultaneously. (2) In addition to the above (1), by displaying the register in the circumferential direction on the operating side by its target value or the amount calculated by the position detection device provided in each of the three register devices, The register in the circumferential direction can be clearly displayed if necessary. (3) In addition to the above (1), by providing a feedforward control device having a correction function, the register position of the plate cylinder can be corrected more accurately.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a timing chart of an example of the present invention.

FIG. 3 is a cutaway front view of a divided plate cylinder device to which the present invention is applied.

[Explanation of symbols]

 17 Circular register device 18 Axial register device 60 Potentiometer 61 Potentiometer 71 Register control device (whole) 72 Command device 77 Display device 78 Main controller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kiyoshi Shiramizu 5007 Itozaki-cho, Mihara-shi, Hiroshima Mitsubishi Heavy Industries, Ltd.Mihara Works (72) Inventor Norifumi Tasaka 5007 Itozaki-cho, Mihara-shi, Hiroshima Mitsubishi Heavy Industries Mihara Works Within

Claims (3)

[Claims] 1. A split plate cylinder of a rotary printing press, wherein when the driving-side and operating-side circumferential and axial registrations are aligned, each of the driving-side registrations affects the operating-side circumferential registration. In the device, the operating side circumferential direction is determined by the output signals of the position detecting devices attached to each of the three registering devices of the driving side circumferential and axial registering devices and the operating side circumferential registering device. A register control device having an automatic register correcting circuit, which is configured to operate the register device. 2. A split plate cylinder of a rotary printing press, wherein when the driving-side and operating-side circumferential and axial registrations are aligned, each driving-side registration affects the operating-side circumferential registration. In the apparatus, the operating-side circumferential register display is based on a target value of registration issued to the operating-side circumferential register apparatus, or the driving-side circumferential and axial register apparatus. A register control device having an automatic register correction circuit, characterized in that it is calculated from the output signals of the position detectors attached to each of the three register devices in the circumferential direction on the operating side and displayed. .. 3. The register controller having an automatic register correcting circuit according to claim 1, further comprising a feedforward controller having a function of correcting the operation of the register controller by using an electric command in place of the push button or the push bar.