DD154866A3 - DEVICE FOR CONTROLLING A PRINTING MACHINE - Google Patents

Abstract

The invention relates to a device for controlling a printing machine by entering the printing press sheet. Based on the task - to create a device for controlling the printing machine with repetitive and / or additional Vorgerenge to Laufleistungserhoehung, the gefoerderte to the landing line sheet is controlled and evaluated the control signals at different times. Depending on the result of the check, shutdown, running or repetitive work is carried out.

Description

YEB Combine Polygraph

"Werner Lamberz" Leipzig

705 Leipzig * Leipzig, February 5, 1980

Device for controlling a printing machine

field of use

The invention relates to a device for controlling a printing machine by in the printing machine incoming sheet.

Characteristic of the known technical solutions

It is a control device for automatic pressure adjustment and later intake and application control in sheet-fed printing machines known (DE 2 202 851). The equipped with two arranged in a line measuring heads device operates with 3 measuring times, with two of the three measuring times for early and late bowing only during the startup of the printing machine predetermined and the control during the run of the machine only at one measurement time. The press is stopped immediately by the device when early, late, oblique, and missals occur.

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A disadvantage is the high circuit complexity of the device, its lack of complexity and lack of compatibility for the further connection of additional devices for automatic sheet travel control,

Furthermore, the shutdown rate eats extremely high in the event of incorrect bends due to immediate quenching.

Object of the invention

The aim of the invention is to increase the productive capacity of the printing machine by lowering the Abschaltquoten at entry of incorrectly lying bow at low circuit complexity,

Object of the invention

Object of the invention i _s t a device for controlling the printing machine as a function of the sheet travel with repetition and / or additional operations for mileage increase.

Essence of the invention

According to the invention, the object is achieved in that, as is known, one of a clock device clocked twice and connected to an array of at least two scanning heads on a Anlegeliiiie measuring device connected to the input and output device connected to the clock means for preventing and releasing the sheet inlet and a on and on the output side with the clock device and the device for preventing or releasing the sheet

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Run associated investor control is arranged downstream of a feeder circuit and additionally between the clocked investor control and investor circuit on the input side with the measuring device and input and output side with the device to prevent or release the sheet running output side. is arranged with the investor control and connected to the clock means Umdrehungsanlegerschaltung.

In this case, the device for preventing or releasing the sheet inlet is an output side connected to the investor control Wiederanfahreinrxchtung downstream, the clock means is still a display and evaluation, consisting of an input side connected to the clock means OR gate and a downstream And-gate, the second Input with the scanheads and whose output is connected via a shift register with a phase-locked gear or a display and evaluation, consisting of two input side connected to the clock and the scanhead and gates, each having a flip-flop with downstream display and each an integrator whose Outputs are connected to a phase control gear, downstream.

embodiment

The invention will be explained in more detail below with reference to an exemplary embodiment,

In the drawings, Figure 1: Printing machine Figure 2: Arrangement of'Abtastköpfe Figure 3 t clock scheme '.

 Figure 4: block diagram

Figure 5: Schematic device for preventing or release of the sheet inlet

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Figure 6: Schematic investor circuit

Figure 7: Circuit diagram investor control

Figure 8: circuit diagram clock device

Figure 9i Schematic measuring device

Figure 10: Circuit diagram Umdrehungsanlegerschaltung

FIG. 11; Schematic re-start device

FIG. 12: Display and evaluation device I

FIG. 13: Display and evaluation device II

The inventive device is on a printing machine, consisting of a feeder 1 for sheet conveying including a feeder control 9, feeder circuit 12, a feed table 2 with two arranged on a Anleglinie 3 scanning heads 4 to control the sheet 11, one or more printing units 5, wherein the first printing unit with a device for preventing or, for the release of the sheet inlet 6 is equipped in the printing press and a boom, not shown, applied. The drive 'of the printing machine by means of an electric motor 7, the electric motor is associated with a device for speed control 8,

The device further contains a measuring device 14 which is connected downstream of the scanning heads 4 and which is connected on the input side to a clock device 13,

The Fehlbogen- Schiefbogenausgang 14 * 1 of the measuring device 14 is connected to a device for preventing or, release of the bow • inlet 6, a feeder control 12 and a Umdrehungsanlegerschaltung 15 and the Schiefbogenausgang 14.2 connected to the Umdrehungsanlegerschaltung 15. The means for preventing or release the sheet inlet 6 is the input side continues to be connected to the Umdrehungsanlegerschaltung 15 and the output 16.1 of the clock generation 16. The output 16.1 provides a measuring clock according to Figure 3, 3-1. On the output side, the means for preventing or releasing the sheet inlet 6 with the clock processing 17 and the Umdrehungsanlegerschaltung 15 is connected. Furthermore, the output 6.1 and 6.2 of the device 6 with the Wiederanfahreinrichtung 18 and the output 6.2 is still connected to the investor control 12. The Wiederanfahreinrichtung 18 is still the input side with the speed control 8 and the output side with the investor control

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The feeder control 12 is on the input side also connected to the Umdrehungsanlegerschaltung 15 and the output 16.1 of the clock generation 16 and the output side to the feeder control 9, the Umdrehungsanlegerschaltung 15 and the clock processing 17.

In addition to the already mentioned connections, the feeder circuit 9 is still connected on the input side to the rotation feeder circuit 15,.

The Umdrehungsanlegerschaltung 15 is the input side still connected to the clock output 16,1 of the clock device 16 and the clock processing 17.

The device for preventing or, release the sheet inlet 6 (Figure 5) includes a first AND gate 26 and a second AND gate 27, wherein both gates with the clock output 16,1 of the clock generation 16 and the Fehlbogen- Schiefbogenausgang 14.1 of the measuring device 14 are connected, the connection with the latter output is negated for the second AND gate 27, the outputs of the AND gates 26, 27 each have an input of a flip-flop 28 downstream. The output of the flip-flop 28 is connected to the inverter circuit and the clock processing "17 and to a third AND gate 29 whose second input is negated and connected to the output of the inverter circuit 15. The output of the third AND gate 29 is once direct to the Wiederanfahreinrichtung 18, on the other hand via an amplifier 30 with a magnet 31 for actuating the device for preventing or release of the sheet inlet and finally finally connected via a NOR gate 32 and a pulse shaper 33 with the Wiederanfahreinrichtung 18 and the investor control 12.

The clock output 16.2, which supplies clocks according to FIG. 3, 3.2, is connected to the display and evaluation device 19 and the clock output 16.3, which delivers clocks according to FIG. 3, .3, 3, to the display and evaluation device 20. It should be noted that the devices 19 and 20 are alternatively used. The display and evaluation devices 19 and 20 are also connected to the scanheads 4.

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The measuring device 14 (Figure 9) includes two input-and-gate 21, the inputs of each of a scanning head 4 and the input from the clock means 13 are formed. The input-and-gates 21 are each a flip-flop 22, whose second input is also formed by the input of the clock means 13, downstream.

The outputs of the flip-flops 22 each have an OR gate 23 and a respective indicator lamp 24 nebengeordnet, wherein the OR gate 23,2 forms the Pehlbogen- Schiefbogenausgang 14.1 of the measuring device, the OR gate 23 «1 has negated inputs and the outputs of Or gate 23 via an output-AND gate 25 form the Schiefbogenausgang 14.2 of the measuring device.

The Wiederanfahreinrichtung (Figure 11) includes a flip-flop 34 -, whose first input from the second output 6.2 of the means for preventing or release of the sheet inlet 6 and the second input of an OR gate 35 is formed. The inputs of the OR gate 35 are formed by the first output 6.1 of the device for preventing or, release of the sheet inlet 6 and by a switch 36 which is open with the bar grille 41 open "The bar grille 41 is disposed above the feed table 2; in order to remove sheets which are not intended to enter the machine, the bar grille 41 must be opened _s d, h, folded up.

The output of the flip-flop 34 is connected directly to an indicator lamp 38 via a second AND gate 40 with the feeder control 12 and via a first AND gate 37, the second input of the speed control 8 (signal at minimum speed) is formed, and a downstream Pulse shaper 39 connected to the second input of the second AND gate 40, the investor control 12 (Figure 7) includes a first flip-flop 42, the first input of a first OR gate 43 and the second input of a second OR gate 44 formed becomes, " .

The first input of the first OR gate 43 is formed by the output of the Wiederanfahreinrichtung 18 and the second input from a feeder-on switch 45.

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The first input of the second OR gate 44 is formed by a feeder-off switch 46 and the second input from the second output 6.2 of the device for preventing or releasing the sheet inlet. The first output of the first flip-flop 42 is connected to the first input of a second flip-flop 47, whose output is connected to the feeder circuit 9, the inverter circuit 15 and the clock processing 17 »

The feeder control 12 further includes a first AND gate 48, the first input of the clock output 16,1 of the clock generation 16, the second input of the Fehlbogen- Schiefbogenausgang 14.1 of the measuring device 14 and the third input of the Umdrehungsanlegerschaltung 15 is formed.

The output of the first AND gate 48 is connected to the second AND gate 44 and the input of a third OR gate 49. The second input of the third OR gate 49 is from the second output 6.2 of the device for preventing and releasing the sheet inlet 6 and the third input from the output of a second, the first flip-flop 42 downstream and connected to the clock output I6.I and gate 50 formed. The output of the third OR gate 49 is connected to the second input of the second flip-flop 47.

The feeder circuit 9 (Figure 6) includes an OR gate 51 whose inputs are formed by the feeder control 12 and the Umdrehungsanlegerschaltung 15, the OR gate 51 are a NOR gate 52, an amplifier 53 and a magnet 54 to investors and shutdown downstream,

The Umdrehungsanlegerschaltung 15 (Figure 10) includes a flip-flop 55 whose output is connected to the feeder control 12 and the means for preventing or release of the sheet inlet 6.

The first input of the flip-flop 55 is formed by a first OR gate 56, whose inputs are formed by the feeder control 12 and der'Einrichtung to prevent or release the sheet inlet 6.

The second input of the flip-flop 55 is formed by a second OR gate 57, wherein the two inputs each have an AND gate

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58, 59 is connected upstream. The first input of the first AND gate 58 is connected to the clock processing 17 and the second input to a third OR gate 60. The first input of the second AND gate 59 is mif the clock output 16.1 of the clock generation 16, the second input of the second AND ~ gate 59 and the first input of the third OR gate 60 with the Schiefbogenausgang 14.2 and the negated input of the third Or gates 60 with. connected to the false-arched slanted-sheet exit 14, 1 '

The output of the second OR gate 57 is followed by a pulse shaper 61 of the leading to the feeder circuit 9 output, '

The clock device 13 (Figure 8) includes a clock generation 16; the clock generation supplies via the output 1-6.1 and 16,4 clock signals according to Figure 3, 3-1 , via the output 16,2 clock signals according to Figure 3? 3 * 2 and via the output 16.3 clock signal according to Figure 3, 3.3.

Furthermore, the clock device 13 includes a clock processing 17. The clock processing includes an OR gate 62, whose output is connected to the measuring device 14 and whose inputs are connected to the outputs of the upstream and downstream gates 63, 64. The output of the second AND gate 64 simultaneously forms the connection to the inverter circuit 15, the first input of which is connected to the output 16,4 of the clock generation 16, the second input negates the means of preventing the sheet inlet 6 and the negated third Input connected to the output of a third AND gate 65. The first input of the first AND gate 63 is connected to the output 16,1 of the clock generation 16 and the negated second input to the output 'of the third AND gate 65. The first input of the third AND gate is connected to the feeder control 12 and the negated input to the means for preventing or releasing the sheet run 6. The display and evaluation device 19 (Figure 12) includes a first and a second AND gate 66, 67, wherein the first input of the first AND gate 66 of the scanning heads 4 and the

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second input from the clock output 16.2 (start signal) is formed. The first input of the second AND gate 67 is formed by the clock output 16.2 (end signal) and the negated second input from the scanning heads 4,

The outputs are each a flip-flop 68, 69 and each an integrator 70, 71 downstream. The flip-flops 68, 69 are each a display 72, 73 and the integrators 70, 71 downstream of a phase control device 74. The display and evaluation device 20 includes an OR gate 75, whose 'inputs of. the output 16.3 of the clock processing 16 are formed. The AND gate 75 is followed by an AND gate 76, the second input of which is formed by the scanning heads 4. The output of the AND gate 76 is followed by a shift register or counter 77 and a display and / or phase control device 78.

The operation of the means for controlling will be described below.

By means of the feeder control 9, Eüslegerschaltung 12, the sheet delivery is initiated and the sheet 11 promoted via the feed table 2 to the Anlegmarken 10 and the Anlegglinie 3. In the area of the laying marks, the sheets are checked by means of the scanning heads 4.

The scanning heads 4 determine missing sheet (no sheet), early sheet, late sheet, oblique sheet and good sheet.

The signals of the scanning heads are evaluated at two different measuring cycles (FIG. 3, 3.1),

By actuation of the feeder-on switch 45, the first flip-flop 42 and the second flip-flop 47 of the feeder control 12 is set and the magnet 54 is switched dead to commission the investor and thus the beginning of sheet promotion.

The flip-flops 22,1, 22,2, 28 and 55 are not set yet. By the clock processing 17, the measuring clocks are provided according to Figure 3, 3.1,

Now arise various operating cases. Operation case 1 (proper entry of the first sheet)

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The scanning heads 4 determine good-bow, the flip-flops 22.1 and 22.2 are set, the indicator lights 24.1 and 24.2 extinguish, via the second AND gate 27 of the device 6, the flip-flop 28 is set. About the third AND gate 29, the magnet 31 is de-energized, d, h. the sheet feed into the printing press is released,

Operating case 2 C'1. Bow is the first measuring clock Figure 3, 3.1 a slant)

The flip-flop 22.1 or 22.2 is set. Via the output Ünd gate 25 and the second AND gate 59, the flip-flop 55 is set and the. Pulse shaper 61 is triggered, whereby the magnet 54 is briefly energized. This stops the investor for one stroke; Thus, no double sheets can arise on the system.

Now takes place for the first measuring cycle of the next working cycle a new measurement of the sheet position,

Operating case 2.1 CBogen has now been aligned) There is a measurement for 1, measuring cycle of the second working cycle of the machine, the output of the OR gate 23.2 leads L signal, via the AND gate 27, the flip-flop 28 is set; via the OR gate 56, the reset of the flip-flop 55 and via the AND gate 29, a release of the system, d, h _# release of the sheet inlet takes place in the printing press.

With the setting of the flip-flop 28, the second measuring clock C according to FIGS. 3, 3, 1) is blocked for further measurement via the AND gate 64,

Operating case 2.2 CBogen has not aligned, d, h. there is still a crooked bow)

There is a measurement for 1, measuring cycle of the second power stroke. By the set flip-flop 55 via the AND gate and the OR gate 49, the resetting of the flip-flop 47 and thus the final shutdown of the investor. Operating case 3 "

At the 1, measuring cycle, a missing sheet is detected. The measurement is carried out at 2, measuring cycle-

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Regardless of whether the second measuring cycle good bow or Schiefbogen is present, the flip-flop 55 is set as well as the pulse shaper 61 triggered via the OR gate 60, the AND gate 58 and the OR gate 57.

Thus, in order to avoid double sheets, the investor is switched off for a work cycle; there is a new measurement for 1, measuring cycle of the next power stroke. Depending on the result of the measurement (good sheet or slant sheet), the further process now takes place as already described, operating case 4 (sheet travel)

The first sheet has been processed according to operating case 1, d, h, the flip-flops 22,1 and 22.2 are set and the magnet 31 is de-energized, whereby the sheet running is released in the printing press. At the same time the second measuring clock is locked, d. h, only the first measuring clock of the measuring device 14 is supplied.

During the sheet run (sheet sequence after the 1st sheet), a skew or missing sheet occurs at the first measuring cycle, Thus, the flip-flop 28 is reset and the means for preventing or, release of the sheet inlet 6 locked, d. H. The sheet is prevented from entering the press. To 'avoid the emergence of double sheets, a pulse is generated with the setting of the flip-flop 28 in the pulse shaper 33, which resets the flip-flops 42 and 47 and thus disengages the investor.

Due to the interruption of the sheet run, the machine returns to its lower speed,

The pulse of the pulse shaper 33 is also the flip-flop 34, whereby the indicator lamp 38 lights up and thus signals that the machine is not yet finally turned off, the machine has been driven to a restart of the investor enabling speed is on the first AND gate 37 of the pulse shaper 39 excited and thus the investor put back into operation.

Now, a new measurement of the sheet position is made for the first measuring cycle of the next working cycle. Depending on the measurement result, the further signal processing now takes place as described under operating case 2.1 of FIG. 2.2.

Claims (3)

- Ί2, - '<£ I Ϊ3 QQ i Claim for invention 1. A device for controlling a printing press by incoming sheet into the printing press, characterized in that, as known, one of a clock device (13) clocked twice and with an array of at least two scanning heads (4) connected to a Anlegglinie (3) measuring device (14) on the input and output side with the clock device (13) connected means for preventing or «release of the sheet inlet (6) and via an input and output side with the clock means (13) and the means for preventing or releasing the sheet inlet (6) connected investor control (12) a feeder circuit (9) , is subordinate and in addition between clocked investor control (12) and feeder circuit (9) an input side with the measuring device (14) and input and output side with the means for preventing or ,, release of the sheet inlet (6), the output side with the investor control (12) and rotation inverter circuit (15) connected to the clock device (13) is arranged, 2. Device for controlling a printing machine according to claim 1, characterized in that the means for preventing or release of the sheet inlet (6) is connected downstream of an output side with the investor control (12) Wiederanfahreinrichtung (18), 3. Device according to claim 1, characterized in that the clock device (13) comprises a display and evaluation device (20), consisting of an input side connected to the clock means OR gate (62) and a downstream And-gate (76) whose second input to the Abtastköpfen (4) and whose output is connected via a shift register (77) with a phase-locked gear (78) is arranged downstream, 4 »device according to claim 2, characterized in that 219 33 1 the clock device (13) comprises a display and evaluation device (19), consisting of two on the input side with the clock .einrichtung and the Abtastköpfen (4) connected And-gates (66, 67), each of which a flip-flop (68, 69). with downstream display (72, 73) and one integrator each
(70, 71), whose outputs are connected to a phase-locked gear (74) is arranged downstream. , For this. ^ ..... pages drawings