JPS6042047A - Automatic setter for gravure printing press - Google Patents

Abstract

PURPOSE:To provide an automatic setter for a gravure printing press by memorizing initial values of the printing speed, tension values at sections, printing pressure, doctor pressure, dryer temperature and the like into a recording medium to enable an automatic setting reading them at the repeat printing. CONSTITUTION:An automatic setter is made up of a section (a) for setting related to tensions in the unwinding, infeeding, outfeeding and the like, a section (b) for setting related to printing pressure and doctor pressure, a section (c) for setting related to drying temperature, a section (d) for initial register setting, a section (e) for setting related to tensions in the winding unit and a central controller 1. Then, the printing speed, tensions, printing pressure, doctor pressure, dryer temperature, automatic initial register value and the like are inputted with a key unit, the input signals is converted into a current signal or a voltage signal and sections are driven by the signals after the conversion while the signals are memorized into a memory.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic gutter and reproduction device for gravure printing.

In general, gravure printing machines are rich in photographic tones, so
In addition to publishing, it is also used as a printing machine for 5-fold carton and a woodgrain printing machine for building materials, but it has the disadvantage that it takes time to initialize rotating equipment, pneumatic equipment, etc.

In view of the above points, the present invention automatically sets the initial values of rotating equipment, etc., which were conventionally set manually, and furthermore, sets values such as the setting position and speed of each part during printing on magnetic tape, floppy disk, etc. Store it on a recording medium such as a disk,
During repeat printing, by re-entering the data using the recording medium, the same values as the previous optimal printing conditions can be set. This reduces setup time and reduces horizontal paper, etc., and also allows automatic setting of standardized printing conditions. It also provides a reproduction device.

Hereinafter, the present invention will be explained in detail using the drawings.

Fig. 1 shows a system diagram of an automatic setting and reproducing device for a gravure printing press according to the present invention, and section +21 in Fig. 1 shows a system diagram for setting tension relations such as unwinding, infeed, and outfeed. Figure 1 (BL section is a system diagram for setting printing pressure and doctor pressure relations. Figure 5 is a CL section is a system diagram for setting drying temperature relations. Figure 1 + 21 section is a system diagram for setting initial register. A system diagram is shown for setting the winding and tension/yong relations of each unit, and each section, printing speed, etc. are centrally controlled by a central electronic control unit (11).

First, let me explain about the system diagram for setting tensions such as unwinding, infeed, and outfeed in the fal section in Figure 1. Settings can be made in advance using the keyboard (not shown), or settings can be changed using the machine side keys (2). The finely tuned input signal is sent to the central electronic control unit [Jl'& Street, 1)
/A converter (3) converts the current signal into a current signal, and then outputs the current signal to the electro-pneumatic converter (4) to supply air from the air source (5) through the pipe (61f6j) at the set air pressure. A force corresponding to the tension is generated in the cylinder (7), and the dancer roller (8) is controlled so that it is always located in the center, allowing adjustment of each tension such as 5 winding, infeed, and outfeed. Here, (9) is a potentiometer, and the signal detected from this potentiometer (9) passes through a control amplifier (10) to a motor (5) such as an infeed.
The tension fed to the printing unit is kept constant by changing the speed of the paper (not shown) or by operating the electromagnetic brake for unwinding.

Next, in the system diagram for setting the printing pressure and doctor pressure relationship shown in the fbl section of Fig. 2, the values of the printing pressure and doctor pressure of each unit are entered using the keys (121, (22) on the machine side). The signal is converted into a current signal by the central electronic control unit (11.2 ways, D/A converter QQ31), and then the signal is output to the electro-pneumatic converter [141, t2 (a) to convert the air source (15), (From 251 to the pipe line (161, It can be automatically set to the doctor pressure value.

Furthermore, FIG. 1 (CL section is a system diagram for setting drying temperature, which is set in advance by the keyboard (not shown) of the central electronic control unit fi+, and after the parallel signal ° is converted into a serial signal, the temperature is By outputting to the controller side, (, 31+, each temperature controller side (30+, (311 is the heater roller (321 temperature sensor) and dryer (3
4) temperature sensor (3ω) and open/close the valve (36) 1.3n until they match, and the hot water from the water heater 08 passes through one of the pipes (39) and (401) to the heater roller 04. is sent to the other pipe (50°C) to maintain the temperature at the set value.
), the hot water that has passed through 5υ enters the heat exchanger 53), and the air that enters from the air source 621 becomes hot air through the heat exchanger (5■), which is then sent to the dryer to set the temperature inside the dryer to the set value. to hold.

Next, the system diagram regarding the automatic registration device is shown in Figure 1(d).
Section-C is shown. Automatic registration equipment generally monitors the registration pass/fail detection mark using a registration detection sensor (4υ).
As the mark passes under the scanning head, electrical pulses are sent to the electronic control unit (4), creating a relative time lag of the pulses, so that e.g. The register is corrected by slightly moving the motor (44) of the compensator roll (43) between the compensator rolls (43), but since the initial setting position of the compensator roll (43) is the plate cylinder circumference, Therefore, in the device of the present invention, the switch ISl connected to the electronic control unit 0 is connected to the compensator control amplifier (451), and the switch is The set signal passes through the central electronic control unit +11, sends pulses from the compen control amplifier (Tsukuda) to the motor (44), and outputs pulses to the compen roll (44).
3) can be automatically placed in the desired position.

(46) is a pulse detector and a compen roll (4J
1 foot is detected and a signal is sent to the central electronic control unit (1).

The section labeled tel in Figure 1 is a system diagram of the winding and each unit tension. The force applied to the paper, etc. is detected by the tension detector (63), and the control amplifier (63) detects the force applied to the paper, etc.
A signal is output from the ring to change the speed of the DC motor (65), and the winding is done in accordance with the value set by the machine side key (6), which is held in the tension detector of each unit.

Further, in FIG. 1, (70) is a machine-side key for printing speed, and the printing speed is also set and stored through the central electronic control unit 0).

The present invention has the above-mentioned configuration, and not only can each setting value be automatically set, but also the values such as each setting position speed during printing can be stored in a recording medium such as a magnetic tape or a floppy disk. , during repeat printing, it is possible to set the same value as the previous optimal printing condition by simply inputting it from the recording medium to the central electronic control unit, making it possible to shorten setup time and reduce paper waste. .

[Brief explanation of the drawing]

FIG. 1 is a control system diagram of a gravure printing machine with an automatic preset reproduction device of the present invention, FIG. )1 is a system diagram showing the relationship between printing pressure and doctor pressure, FIG. 1c) is a system diagram showing the dryer relationship, and FIG. 1fcl is a system diagram regarding the automatic registration device. (1)...Central electronic control unit (2)...Machine side key (3)...D/A converter (4)...Electro-pneumatic exchanger (5)...Air source f6) f6Th・・・
・Pipe line (7)...Air cylinder (8)...Dancer roll (9)...Potentiometer (10)
... Control amplifier [21 (221... Machine side key α
31 (2 (g)...D/A converter (141t)
2. Electropneumatic exchanger (151 (251)... Air source (161 (26)... Pipe line 071... Air cylinder for printing pressure (2η... Air cylinder for doctor 081... Impression cylinder (2~...Doctor Miss (31)
)... Temperature controller (37J... Heater roller α3
31... Temperature sensor G4)... Dryer 05)
...Temperature sensor (361(3η...Pulp (g)...Water heater C31tlO)...Pipeline 51)
61)...Pipeline (521...Air source 531.
・・Heat exchanger 0υ・・・Orientation detection sensor (421...
・'t Child control device [(431...Compensator roll (441...Motor (Tsukuda...Conven control amplifier tG3)...Tension detector (64)...
Control amplifier (65)...DC motor (62)...
Machine side key (70) Machine side key patent applicant Toppan Printing Co., Ltd. Representative Kazuo Suzuki (Tato IA)

Claims (1)

[Claims] A key device that sets the printing speed, tension value of each part, printing pressure, doctor pressure, drying mold temperature, automatic register initialization, etc., a conversion device that changes the input signal from the key device into a current signal or voltage signal, and each An automatic centering device for a gravure printing machine, which consists of a device driven by an output signal from a converter and a device that stores setting values for each part.