JPS6133503A - Timing signal generator for printing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a timing signal generating device for a printing press.

A large number of distributed timing signal generators are known in printing presses. These devices include, for example, periodized single-wafer control, sequenced bodice and bodice relief,
It is suitable for each purpose of use, such as periodic single-wafer separation.

BACKGROUND OF THE INVENTION Control devices for multicolor rotary presses are known for activating printing units or their individual functional groups at predetermined sequential times as the sheets pass through the machine. This device consists of a signal generator, a response device, a signal conditioning device, and a closed loop shift register series for generating timing signals corresponding to the angular positions associated with integral parts of the revolution of a single rotational axis = 4 = x pulses. (German Patent No. 2 220 601).

In the pulse stage used to generate timing signals,
This pulse stage has the disadvantage that it is designed for only one use and is therefore only one of a number of timing signal generators present in the printing press.

Furthermore, this pulse stage can only provide unmodulated timing signals, and for modulating signals, e.g. for providing rotational speed-dependent timing signals required for the control of servo elements with dead time. has the disadvantage that it cannot be used. Moreover, with this device, in order to generate pulses of various lengths, it is necessary to use a unique pulse conditioning stage designed only for unchangeable pulse lengths.

The object of the invention is - to supply various timing signals from a central location with the highest reproducible angular precision and with minimal technical outlay, in conjunction with the possibility of easily changing the individual timing signals; be.

In other words, it is an object of the present invention to provide a timing signal generator for centrally generating and modulating timing signals.

This object, according to the invention, provides a timing signal generation device for a printing press comprising a pulse generator comprising a rotation angle increment generator and a single synchronization signal generator, and a pulse processing device. , an address generator and a memory connected to the output and configured as a PROM (Programmable Read Only Memory).

The address generator is configured as a rotational angle address generator connected to the rotational angle increment generator and the single synchronization signal generator, and/or a rotational speed address generator connected to the rotational angle increment generator. .

The rotation angle address generator includes a rotation angle increment counter whose input side is connected to the rotation angle increment generator and whose parallel output terminals form the rotation angle address output terminal of the rotation angle address generator as a rotation angle address data bus; a preset device connected to the incremental counting device via its parallel preset input terminals and whose input side is connected to a single synchronization signal generator.

The rotational speed address generator is connected to the rotational angle increment generator through an AND gate whose input side is connected to a monostable multivibrator, and whose parallel output terminal serves as a rotational speed address data bus to the rotational speed output terminal of the rotational speed address generator. It includes a rotational speed counting device forming a.

The storage device contains as many address areas as there are rotation angle address generators.

The pulse processing device consists of a bus driver connected after each address generator and a changeover switch whose contacts are connected to the respective second input terminals of the bus driver, and an operation mode selection switch connected before the storage device. A device, or an AND gate whose first input terminal is connected to the output terminal of the rotation angle increment generating device, and a changeover switch whose contacts are connected to the respective second input terminals of the AND gate, for each rotation angle increment count. It includes an operating mode selection device connected upstream of the device and the respective rotational speed counting device.

Next, the present invention will be explained in more detail by way of examples.

This timing signal generator comprises a pulse generator 1 having a rotation angle increment generator 2 and one or several single synchronization signal generator bags #3.

The rotation angle increment generator 2 has a coding disk 4 . In that case, the coding consists, for example, of light and dark areas at the edge of a coding disk that rotates beside the fixedly mounted sensor 5 . The coding disk 4 is provided with bright and dark coding portions depending on the desired precision. When divided into 250 bright coding parts and 250 dark coding parts, 360725
It corresponds to an accuracy of 0-1.44°, ie an angular value of ψ□.

The scanning of the coding disk by the sensor can be carried out, for example, by means of a Nulit transmission method.

The generation device for a single synchronization signal is constructed similarly to the rotational angle increment generator, but the coding disk has only one corresponding to the desired position whose angle values correspond to 92 and ψ3.
It has two markings.

In printing machines designed only for front printing mode,
A single synchronization signal generation is sufficient.

In printing presses designed for front printing and front printing modes of operation, two single synchronizing signal generators are required.

In that case, one machine part operated in front printing is driven by the synchronization signal of one of the single synchronization signal generators, and the machine part operated in reverse printing is driven by the synchronization signal of the other single synchronization signal generator. Driven by synchronous signal.

The coding discs 3, 4 are mounted on a common shaft, in particular a so-called single rotation shaft, connected to the printing press.

A single-rotation shaft refers to a shaft that rotates once during each operating cycle of the machine.

Furthermore, this timing signal generator includes a pulse processing device 6 with one or several rotational angle address generation circuits 7 and one rotational speed address generation circuit 8 .

The rotational angle address generators 7, 7' are similarly constructed as KS. The rotation angle address generator 7 includes a rotation angle increment counter 9 and a preset device 11, the input terminal of the rotation angle increment counter 9 is connected to the rotation angle increment generator 2, and its parallel output terminals are The input terminals of the presetting device 11 are connected together to a rotation angle address data bus 1o which forms the output terminals of the rotation angle address generator 7, and the input terminals of the presetting device 11 are connected to a single synchronization signal generator 3 whose parallel output terminals are It is connected to the preset input terminal of the rotation angle increment counting device 9.

The rotational speed address generator 8 includes a rotational speed counter 2 whose parallel output terminals are grouped together as a rotational speed address data bus and form the output terminals of the rotational speed address generator 8 . Furthermore, the rotation speed address generator 8
AND gate 14 and monostable multiby-break 15
It includes. In that case, one input of the AND gate 14 is formed from the rotation angle increment generator 2 and the other input from the output terminal of the monostable multivibrator 15. The output terminal of the AND gate 14 is connected to the input terminal of the rotational speed counting device 12.

The timing signal generator 6 further includes a storage device 16 formed as a PROM. This storage device has an address data bus 10 on the input side.

13 to the address generator 7.7', 8. The storage device 16 stores timing ψ related to ψ2.

Timing ψ1 related to ψ3 Timing ψ1 related to ψ2 and ω Timing ψ1 related to ψ3 and ω However, ω...angular velocity of single rotation axis It has an output terminal that outputs an output.

Furthermore, there are one or several test output terminals for connecting known test equipment.

PROM, as is known, is a memory matrix consisting of the following operating blocks: In this case one bit is stored at each intersection point of the matrix.

One decoding circuit. It consists of a column decoder and a row decoder, the row decoder reads the rows of the matrix, the column decoder reads the 50 columns at the same time as the data width of the PROM, and the bits stored at the intersections thus read are output. given to the buffer.

One output buffer. It consists of an output stage which amplifies the recalled memory contents and brings them out to an output terminal.

-y)-rungu (7-r'roulung). This conducts the column of the matrix called by the column decoder and inputs its contents to the output buffer 7.

In the embodiment shown in FIG. 1, the PROM has two address areas.

In the embodiment shown in FIG. 2, the pulse processing device 6
includes a first operation type selection device 17 provided before the storage device 16.

The operating type selection device 7 includes a changeover switch 19 and as many bus drivers 18 as there are address generators, which bus drivers 18 are connected on the input side to the address generators by means of a corresponding data bus. , are connected to the contacts of the changeover switch 19, and on the output side are connected to the storage device its.

The changeover switch 19 has four contacts, the first contact l
941 is Kh after the rotation angle address generator it7+
The bus driver 18' is connected to the bus driver 181 to make the bus driver 18' conductive, and in this state of the changeover switch, only the output ψ1-f (ψ2) is supplied.

A second contact 19.2 of the changeover switch 19 is connected to a bus driver 18 located after the rotational angle address generator 7. The third contact 19.3 of the changeover switch 19 is connected to the bus driver 181 connected to the rotational speed address generator 8.
, and a bus driver 181 connected to the rotation angle address generator 7I.

A fourth contact 19.4 of the changeover switch 19 is connected to a bus driver 18' connected to the rotational speed address generator 8 and to a bus driver 18 connected to the rotational angle address generator 7. In the embodiment shown in FIG. 3, the pulse stage includes, instead of the first mode selection device 17, a second mode selection device 20 connected after the pulse generator I, in which case the PROM It has two address areas.

The operating type selection device 20 has a changeover switch 19 similar to the type shown in the embodiment of FIG. 2, connected before the counting device of the address generator and after the rotation angle increment generator gt,2 AND gates 21, 211.

21”.

In that case, the second input terminal of the AND gate is formed from the respective contact of the changeover switch 19.

Next, the operation of the timing signal generator according to the present invention will be explained.

The single synchronization signal ψ2 supplied from the single synchronization signal generator fij3 zeroes the rotation angle address counter fit 71, so that the rotation angle address counter 7I can control the rotation angle supplied from the rotation angle increment generator R2. Provision is made to accommodate angular increments ψ□. This rotation angle increment is applied to a successive nine rotation angle address counter 7', the result of each addition being coded into a binary code at the output of the rotation angle address counter and stored by the rotation angle address data bus 10. It becomes possible to freely input data to the address input terminals of 16 PROMs.

The state of the rotation angle address data bus 10 is the same as the actual angular position of each of the devices 2 provided on a single rotation axis and generating rotation angle increments associated with a single synchronization signal 92.

During one revolution, 250 counts and associated addresses are supplied to the PROM in a section of the coding disk 4 of 1, for example 1.44°, and the stored contents of these 250 addresses are recalled and supplied to the output terminals. . By suitable commonly known silogramming of the PROM with a predetermined bit sample, a predetermined timing signal sequence is output at the output terminal.

In that case, the pulse start and end points and the associated pulse width can be programmed.

Q 0 0 L 0 0 0 '0
01 g LLO・ ・ ・ ・ 2
LLoO・ ・ ・ ・3 L
OOO・ ・ ・ ・4 L 00
0 ・ ・ ・ ・6 00OL -・
・ ・250 0 0 0 L ・ ・
・ ・Output terminal fL6 al 1! L2 a3
a4 a5 a61! In this case, the output terminals aO to a7 are again combined into a data bus, which is designated ψ, -f (ψ2) in FIG. The generated signal sequence for the 1.44° signal and ψ2-0° is shown in FIG.

The other operations of the rotation angle address generator 7 are also the same. At the output terminal of the PROM, in this case, a signal ψ, - (ψ3) is obtained.

The rotational speed address data bus 13 is obtained from the rotational speed address generator 8 in the following manner.

The increment obtained from rotation angle increment generator #2 is supplied to AND gate 4. Monostable multivibrator 15
turns off the AND gate 14 for the adjusted holding time, and the increment supplied from the rotation angle increment generator 2 is counted by the counting device 12.

The counting results are sent to the rotation angle address data bus 13 in binary notation.
are obtained at the counting outputs as, together with the rotation angle address data bus 10, form the respective addresses for operating the PROM.

The state of the rotation angle address data bus 10 matches the respective angular velocities ω and the number of revolutions at which the single rotation shaft of the pulse generator 1 rotates.

In this way, the PROM address is formed by the rotation rate address data bus and the rotation angle address data bus.

In the case shown in FIG. 1, the rotational speed address data bus 13 has a capacity of 4 bits, which corresponds to 16 different rotational speed regions.

If the signal series generated at the output terminals eL6 to a7 of the PROM needs to change depending on the rotation speed, n
It is necessary to use a PROM with 250 addresses. In this case n is the number of different rotational speed regions, in this case n! It is 16.

The PROM address is Chiryu 1 in binary code as shown below.
It is being

The PROM has the following configuration.

Address Memory contents 0 0 ・ ・ ・ ・ ・
T Misery L Rotation speed area l ・ ・ 21H,L Rotation speed area 2 ・ Address Memory content 501 O・ ・ ・ ・ ・
11 Rotational speed region 3 ・ag al 1!4 ag a4 al5 6 a7 Each rotation speed region represents the rotation speed at a predetermined speed pressure. If other speeds are measured and thus two other rotational speed ranges are called up, it is also possible, by appropriate programming, for example, for the output terminal PLO to output signals for different rotational angle values.

The operation mode selection devices 17 and 20 cause the storage device 16 to
Selecting the subsequent output signal at the output terminal of .

Since the first contact of the changeover switch 19 is supplied with the rotation angle ψ1 as a function of ψ2 as the address of the PROM, the timing signal ψ1=f(ψ2) is outputted to the output terminal.

Since the rotation angle ψ□ as a function of ψ3 is supplied to the second contact of the changeover switch 19 as the PROM address, (ψ3) is outputted to the output terminal with the timing signal ψ1-.

Since the third contact of the changeover switch 19 is supplied with ψ2 and the rotation angle ψ1 related to the rotation angle value ω as the PROM address, the timing signal ψ1-f is supplied to the output terminal.
(ψ2·ω) is output.

Since the fourth contact of the changeover switch 19 is supplied with ψ3 and the rotation angle ψ related to the rotational value ω as the PROM address, the timing signal P1-f is supplied to the output terminal.
(ψ3·ω) is output.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG.
FIG. 3 is a block diagram showing another embodiment of the present invention, and FIG. 4 is a graph showing a timing signal sequence obtained by the apparatus of the present invention. l...Pulse generator unit, 2...Rotation angle increment generator, 3, 3'...Single synchronization signal generator, 6...Pulse processing device, 7, 71...Rotation angle address Generator, 8... Rotation speed address generator, 7.7', 8.
...Address generator, 16...Storage device.

Claims (1)

[Claims] 1) A timing signal generation device for a printing press comprising a pulse generation device including a rotation angle increment generation device and a single synchronization signal generation device, and a pulse processing device, wherein the pulse processing device (6) A timing signal generating device for a printing press, characterized in that it includes an address generating device and a storage device (16) connected to the output side and configured as a PROM. 2) The address generator is a rotation angle increment generator (2)
2. A timing signal generator according to claim 1, characterized in that it is constructed as a rotational angle address generator (7) connected to a single synchronization signal generator (3). 3) The address generator is a rotation angle increment generator (2)
2. The timing signal generating device according to claim 1, wherein the timing signal generating device is configured as a rotational speed address generating device (8) connected to a rotation speed address generating device (8). 4) The rotation angle address generator (7) has an input side connected to the rotation angle increment generator (2), and a parallel output terminal as a rotation angle address data bus (10) to generate the rotation angle address of the rotation angle address generator (7). a rotation angle incremental counter (9) forming an output terminal and a preset connected to the rotation angle incremental counter (9) via its parallel preset input terminal and connected on the input side to a single synchronization signal generator (3); A timing signal generating device according to claim 2, characterized in that it comprises a device (11). 5) The rotational speed address generator (8) is connected to the rotational angle increment generator (2) via an AND gate (14) whose input side is connected to the monostable multivibrator (15), and whose parallel output terminal is connected to the rotational speed. Timing according to claim 3, characterized in that the address data bus (13) includes a rotational speed counter (12) forming a rotational speed output terminal of a rotational speed address generator (8). Signal generator. 6) The storage device (16) includes a rotation angle address generator (
7) The timing signal generating device according to claim 1, wherein the timing signal generating device includes the same number of address areas as 7). 7) The pulse processing device (6) has a bus driver (18) connected after each address generator and a contact point (19.
1 to 19.4) are connected to the respective second input terminals of the bus driver.
7) The timing signal generating device according to claim 1, characterized in that the timing signal generating device includes the following. 8) The pulse processing device (6) has an AND gate (21) whose first input terminal is connected to the output terminal of the rotation angle increment generator (2) and whose contacts (19.1 to 19.4)
a changeover switch (19) connected to the respective second input terminal of the ND gate, and a respective rotation angle increment counting device (
9) and an operating mode selection device (17) connected upstream of the respective rotational speed counting device (12). Generator.