JPH10193578A - Cleaning device for rotary press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen workload on a cleaning worker and shorten cleaning time. SOLUTION: An ink fountain 9 has a fountain roller 10 and is formed of its circumferential face, a fountain a key 11 and a pair of ink weirs 12 and stores ink 13. A group of ink ductor rollers 18 are comprised of a swing roller 3, a form roller 4 on the downstream side and distributing rollers 16, 17 on the upstream side. The second cleaning nozzle 23 that injects a cleaning liquid to the contact surface between the distributing rollers 16, 17 is provided, and the waste of the ink 13 is collected by an ink cleaning blade 21. The first cleaning nozzle 25 that injects a cleaning liquid 24 to the ink cleaning blade 21 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus for discharging ink from an ink fountain and cleaning an ink roller in a rotary printing press.

[0002]

2. Description of the Related Art In a cleaning apparatus of this kind, at the end of a printing operation or at the time of so-called color changing for changing the color of ink in an ink fountain, the printing operation is not hindered. In the meantime, the ink in the ink fountain is discharged, and the ink roller that cleans the ink adhered to the surface of each roller of the ink transfer roller group is washed. As this type of apparatus, there is one proposed in, for example, Japanese Patent Application Laid-Open No. 6-198861.

In the apparatus proposed here, a cleaning liquid supply means for supplying a cleaning liquid to an upstream roller among rollers forming an ink transfer roller group is provided, and an ink cleaning blade is applied to the surface of a downstream roller. It was in contact. In discharging the ink in the ink fountain, the fountain key is moved so that a relatively large gap is formed between all the fountain keys and the fountain roller, and the call roller is moved to the fountain roller and the ink transfer. The ink is transferred to the ink transfer roller group by reciprocating with the roller group.

The ink transferred by the call roller is transferred downstream by a group of ink transfer rollers while the cleaning liquid is supplied to the roller from the cleaning liquid supply means, and the ink is removed by an ink cleaning blade. On the other hand, for cleaning the normal ink roller,
The cleaning liquid is supplied to the roller from the cleaning liquid supply means, and while the ink adhered to the roller is being washed by the cleaning liquid, the ink is transferred downstream by a group of ink transfer rollers and scraped off by an ink cleaning blade.

[0005]

However, in the conventional cleaning apparatus described above, the ink adheres to the ink cleaning blade from which the ink on the ink roller has been scraped off, and if left as it is, the ink is deposited on the ink cleaning blade and cleaned. Conventionally, the operator removes the ink on the ink cleaning blade each time the defect occurs. For this reason, not only does the work load on the worker increase, but also the working environment deteriorates because the surroundings become dirty. In addition, it takes a lot of time to remove the ink, and it has not been possible to reduce the time required for the cleaning operation. Furthermore, if left unattended, the ink dries and the ink removal operation becomes more difficult. If the ink is left unremoved, the blade of the ink cleaning blade will be deformed, causing poor cleaning when cleaning again. There has been a problem that the use of the deformed ink cleaning blade damages the peripheral surface of the roller.

Further, in the above-described conventional cleaning device, when the ink in the ink fountain is discharged, the ink in the ink fountain has a high viscosity, so that the scraped ink adheres to the tip of the ink cleaning blade. I will. In order to prevent this, the ink is discharged from the ink fountain while the cleaning liquid is supplied from the cleaning liquid supply means to the roller to reduce the viscosity of the ink. However, when the viscosity of the ink is reduced, the layer of ink adhered by being transferred onto each roller of the ink transfer roller group becomes thinner. For this reason, the amount of ink transferred from the ink fountain to the ink transfer roller group side is reduced, so that it takes a long time to transfer the ink from the ink fountain to the ink transfer roller group. Therefore, the time required for discharging the ink from the ink fountain becomes long, and the cleaning time cannot be reduced.

[0007] Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and its object is to provide:
It is an object of the present invention to provide a cleaning device for a rotary printing press, which reduces the labor burden of an operator performing cleaning and shortens the cleaning time.

[0008]

In order to achieve this object, a first aspect of the present invention provides a cleaning apparatus for a rotary printing press comprising a plurality of ink rollers for receiving ink from an ink fountain and sending ink to a plate cylinder. And a cleaning device for a rotary printing press including an ink transfer roller group to be cleaned and an ink cleaning blade for abutting a tip of the ink roller on the ink roller to scrape ink. A cleaning liquid supply means is provided. Therefore, the tip of the ink cleaning blade can be automatically cleaned without manual operation.

According to a second aspect of the present invention, there is provided the rotary printing press cleaning apparatus according to the first aspect, further comprising second cleaning liquid supply means for supplying a cleaning liquid to the ink transfer rollers.
After the supply of the cleaning liquid from the cleaning liquid supply means is completed at least, a control means for controlling the supply of the cleaning liquid from the first cleaning liquid supply means is provided. Therefore,
After the ink in the ink fountain is discharged or the ink transfer roller group is washed, the ink washing blade is washed, so that the ink is not fixed on the ink washing blade and does not dry. Does not damage the peripheral surface of the ink roller.

According to a third aspect of the present invention, in the cleaning device for a rotary printing press according to the first aspect, the cleaning liquid is supplied from the first cleaning liquid supply means in a state where a gap is formed between the fountain key and the fountain roller. A control means for selecting a cleaning state to be supplied is provided. Therefore, even if the ink transferred from the ink fountain to the ink transfer roller group is highly viscous, the cleaning liquid from the first cleaning liquid supply means does not cause the ink mass to adhere to the ink cleaning blade.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a cleaning device for a rotary printing press according to the present invention, FIG.
FIG. 4 is a development view viewed from the direction III in FIG. 2, FIG. 4 is a block diagram showing the same overall configuration, and FIGS. 5 and 6 are flowcharts for explaining the cleaning operation. In these figures, reference numeral 2 denotes a plate cylinder having a plate mounted on its peripheral surface, and a pair of ink-impregnated members supported on a pair of swing rollers 3 via arms (not shown) on the peripheral surface of the plate cylinder 2. A roller 4 is detachably contacted, and three kneading rollers 5 are provided above the swinging roller 3 with their respective peripheral surfaces in contact with each other. 6 are provided so as to be in contact with each other.

The ink fountain indicated by reference numeral 9 is provided with a fountain roller 10 and is formed by a peripheral surface thereof, a fountain key 11 and a pair of left and right ink dams 12, and stores ink 13. The fountain key 11 is divided into a plurality of pieces in the direction of the barrel axis of the fountain roller 10 and can be moved by a fountain key motor 35 to be described later, so that the distance from the fountain roller 10 can be adjusted individually. The amount of ink transferred from the urn roller 10 is adjusted according to the picture. Reference numeral 15 denotes a call roller that reciprocates between the rollers 10 and 16 while alternately contacting the pot roller 10 and the kneading roller 16, and 17 denotes a kneading roller that contacts the kneading roller 16. The kneading roller 16, the kneading roller 17, and the swing roller 3,
An ink transfer roller group 18 is formed by the ink application roller 4, the kneading roller 5, the rider roller 6, and the like.

In the vicinity of the swing roller 3, there is provided a washing liquid tank 20 formed in a tub shape longer than the body length of the swing roller 3, and the tip of the washing liquid tank 20 has an edge at the edge of the washing liquid tank 20. The ink cleaning blade 21 facing the peripheral surface of the ink is fixed, and the ink 13 collected in the cleaning liquid tank 20 is provided at the bottom.
A discharge port 22 for discharging the waste liquid is provided. The washing liquid tank 20 is rotatably supported by left and right frames 27 and 28, and although not shown, the rod of a blade attaching / detaching air cylinder 38 described later advances.
The tip of the ink cleaning blade 21 comes into contact with the swing roller 3 and retreats the rod, so that the tip of the ink cleaning blade 21 is separated from the swing roller 3.

Above the ink cleaning blade 21, FIG.
As shown in FIG. 2, a tube 26 rotatably supported by left and right frames 27 and 28 extends along the axial direction of the swing roller 3. A plurality of first washing nozzles 25 communicating with the hollow portion of the tube 26 are arranged in the tube 26 in the axial direction of the tube 26, and the first washing nozzle 25 is connected to the other end of a hose 29 connected to one end of the tube 26. Is provided with a first cleaning nozzle solenoid valve 39, which will be described later. By opening the cleaning solenoid valve 39, the cleaning liquid 24 supplied to the pipe 26 through the hose 29 is provided.
Is supplied from the first cleaning nozzle 25.

A first cleaning nozzle air cylinder 30 is pivotally attached to the frame 28. One end of a lever 31 is pivotally attached to the tip of the rod 30a, and a pipe 26 is split to the other end of the lever 31. Tightened and fixed. In such a configuration, the rod 3 of the first cleaning nozzle air cylinder 30
When 0a is retracted, the pipe 26 rotates clockwise via the lever 31 as shown in FIG. 1, and the cleaning liquid 24 supplied from the first cleaning nozzle 25 is jetted to the ink cleaning blade 21. When the rod 30a moves forward, the lever 3
2, the pipe 26 rotates counterclockwise as shown in FIG. 2, and the cleaning liquid 24 supplied from the first cleaning nozzle 25 is jetted onto the peripheral surfaces of the kneading roller 5 and the rider roller 6.

Above the ink transfer roller group 18, the cleaning liquid 24 is mixed with the kneading rollers 16 and 17 during the cleaning operation.
A plurality of second washing nozzles 23 are provided along the axial direction of the roller. Therefore, by bringing the tip of the ink cleaning blade 21 into contact with the peripheral surface of the swing roller 3, the cleaning liquid 24 supplied from the second cleaning nozzle 23 transfers while cleaning the ink 13 via the rotating rollers. Therefore, the waste liquid of the ink 13 is guided to the cleaning liquid tank 20 by the ink cleaning blade 21 and collected.

In FIG. 4, reference numeral 33 denotes an ink discharge button for starting the discharge of the ink fountain 13 of the ink fountain 13;
Reference numeral 4 denotes an ink cleaning button for starting the cleaning of the ink 13 attached to each roller of the ink transfer roller group 18;
Is a motor for the urn key which moves a plurality of urn keys 11 to adjust the gap with the urn roller 10. 36 is a fountain roller motor for rotating and driving the fountain roller 10 at the time of washing, and 37 is a calling roller 15 for cleaning the fountain roller 10 and the kneading roller 1 at the time of washing.
Reference numeral 38 denotes a paging drive device for reciprocating the ink cleaning blade 6 and a blade mounting / dismounting air cylinder 38 for rotating the cleaning liquid tank 20 to bring the tip of the ink cleaning blade 21 into and out of contact with the peripheral surface of the swing roller 3.

Reference numeral 39 denotes a first cleaning nozzle solenoid valve for opening and closing the first cleaning nozzle 25, and 40 denotes a second cleaning nozzle 2
3 is a second solenoid valve for cleaning nozzle for opening and closing, 41 is the first
And a second counter 42 for counting the opening and closing of the second cleaning nozzle solenoid valves 39 and 40 a predetermined number of times, and a first counter 42 for counting the opening and closing of the first cleaning nozzle solenoid valve 39 a predetermined number of times.
It is a counter of. Reference numeral 43 denotes a fountain key motor 3 based on input information of the ink discharge button 33, the ink cleaning button 34, the first counter 42, and the second counter 41.
5. Urn roller motor 36, calling drive device 37,
This is a control device that controls the blade attachment / detachment air cylinder 38, the first cleaning nozzle air cylinder 30, the first cleaning nozzle electromagnetic valve 39, and the second cleaning nozzle electromagnetic valve 40.

Next, among the cleaning operations of the cleaning device of the rotary printing press having such a configuration, the operation of discharging the ink 13 from the ink fountain will be described first with reference to FIG. If the ink discharge button 33 is turned on in S2 without turning on the ink cleaning button 34 in S1, the fountain key motor 35 is driven in S3 to fully open the distance between all the fountain keys 11 and the fountain rollers 10. I do. In step S4, the urn roller motor 36 is driven to set the urn roller 10 to the maximum rotation amount. In step S5, the call driving device 37 is turned on to reciprocate the call roller 15 between the urn roller 10 and the kneading roller 16. As a result, the ink 13 of the ink fountain 9 transferred to the fountain roller 10 is transferred to the kneading roller 16 by the recall roller 15.

At this time, the second cleaning nozzle solenoid valve 40
Is not open, the cleaning liquid 24
Is not supplied. Therefore, since the viscosity of the ink 13 transferred to the kneading roller 16 does not decrease, the layer of the ink 13 transferred and adhered to each roller of the ink transfer roller group 18 does not become thin. Therefore, the amount of ink transferred from the ink fountain 9 to the ink transfer roller group 18 by the fountain roller 10 does not decrease,
The transfer time of the ink 13 from the ink fountain 9 to the ink transfer roller group 18 is reduced.

In step S5, almost simultaneously with turning on the calling drive device 37, in step S6, the blade attaching / detaching air cylinder 38 is turned on to bring the ink cleaning blade 21 into contact with the peripheral surface of the swing roller 3. In S7, the first cleaning nozzle solenoid valve 39 is opened, and the cleaning liquid 24 is supplied from the first cleaning nozzle 25 to the ink cleaning blade 21. As described above, before the ink 13 in the ink fountain 9 is transferred to the swing roller 3 via the ink transfer roller group 18, the washing liquid 24 is sprayed on the ink washing blade 21 in advance, so that the ink 13 is transferred to the swing roller 3. The high-viscosity ink 13 thus obtained is used as the ink cleaning blade 2
Immediately before being scraped by 1, the ink 13 is dissolved by the cleaning liquid 24 and the ink 13 does not adhere to the ink cleaning blade 21 as a lump of small pieces.

In step S8, the first cleaning nozzle solenoid valve 39 is closed, and the supply of the cleaning liquid 24 from the first cleaning nozzle 25 is stopped. In S9, the number of times the first cleaning nozzle solenoid valve 39 is opened and closed is counted by the first counter 42, and when the count value of the predetermined number of times set in the first counter 42 has not been reached, the first counter 42 is reset again. The cleaning nozzle solenoid valve 39 opens and closes. Here, the first in S9
Is set to the time when all the ink 13 in the ink fountain 9 is transferred to the ink transfer roller group 18 side and the ink 13 is completely discharged from the ink fountain 9.

In step S10, the first cleaning nozzle air cylinder 30 is turned on, and the rod 30a moves forward.
As shown in (1), the pipe 26 rotates counterclockwise via the lever 31 to change the supply direction of the first cleaning nozzle 25 to the direction of the swing roller 5 and the rider roller 6. In step S11, the second cleaning nozzle solenoid valve 40 is opened, and the second cleaning nozzle 23 supplies the mixture to the kneading roller 16 and the kneading roller 17. At this time, since the ink 13 has already been discharged from the ink fountain 9, the discharge speed of the ink 13 from the ink fountain 9 does not change even if the viscosity of the ink 13 transferred onto the ink transfer roller group 18 decreases. Has no effect.

In S12, the first cleaning nozzle solenoid valve 39 is opened, and the first cleaning nozzle 25
The cleaning liquid 24 is supplied to the lid roller 6. As described above, the ink 13 on each roller constituting the ink transfer roller group 18 is dissolved by the cleaning liquid 24 supplied from the second and first cleaning nozzles 23 and 25, so that the ink 13 is fixed on the rollers. Instead, the waste liquid of the ink 13 is collected in the cleaning liquid tank 20 by the ink cleaning blade 21. Further, since the supply of the cleaning liquid 24 to the ink roller group 18 is performed not only by the second cleaning nozzle 23 but also by the first cleaning nozzle 25, the cleaning time is reduced. In S13, the second cleaning nozzle solenoid valve 40 is closed, and the cleaning solution 24 from the second cleaning nozzle 23 is discharged.
The supply of the cleaning liquid 24 from the first cleaning nozzle 25 is stopped by closing the first cleaning nozzle solenoid valve 39 in S14.

In S15, when the number of times of opening and closing of the second and first cleaning nozzle solenoid valves 39, 40 does not reach the predetermined number set in advance, S11 and S11 are executed.
At 12, the second and first washing nozzles 23,
From 25, a cleaning liquid is supplied. When the ink 13 on each roller constituting the ink transfer roller group 18 is collected as waste liquid in the cleaning liquid tank 20, in S15, the number of times of opening and closing the second and first cleaning nozzles 23 and 25 is increased by a predetermined number. Reach In S16, the first cleaning nozzle air cylinder 30 is turned off, and the rod 30a
The first cleaning nozzle 25 rotates clockwise as shown in FIG. 1, and the direction of supply of the cleaning liquid is directed to the ink cleaning blade 21.

In step S17, the first cleaning nozzle solenoid valve 39 is opened, the cleaning liquid 24 is supplied from the first cleaning nozzle 25 to the ink cleaning blade 21, and the ink cleaning blade 21 is cleaned. The timing of cleaning the ink cleaning blade 21 by the first cleaning nozzle 25 may be the same as the end of the roller cleaning by the second and first cleaning nozzles 23 and 25, or may be after a while. . As described above, by cleaning the ink cleaning blade 21 immediately before the end of the cleaning operation,
The waste liquid of the ink 13 that has adhered to the tip of the ink cleaning blade 21 without being completely discharged into the cleaning liquid tank 20 can be discharged into the cleaning liquid tank 20. Therefore, the surface of the swing roller 3 is not damaged by the tip of the ink cleaning blade 21 during the next cleaning. Further, the ink cleaning blade 21
It is not necessary to clean the tip of the device with a rag or the like, and the operator does not stain his hands.

In S18, the first cleaning nozzle solenoid valve 39 is closed, and the cleaning liquid 24 from the first cleaning nozzle 25 is discharged.
Supply stops. In S19, the blade attaching / detaching air cylinder 38 is turned off, and the ink cleaning blade 21 is turned off.
Is separated from the swing roller 3. In S20, the calling drive device 37 is turned off, the swinging operation of the calling roller 15 between the pot roller 10 and the mixing roller 16 is stopped, and the cleaning operation is completed.

As described above, the first cleaning nozzle 25 is provided, and the cleaning liquid 24 is supplied from the first cleaning nozzle 25 to the ink cleaning blade 21 before discharging the ink 13 prior to cleaning the ink fountain 9. By doing so, the scraped ink 13 does not adhere to the tip of the ink washing blade 21, so that the ink fountain 9 is washed well. For this reason, the ink cleaning blade 21 used for cleaning the ink roller can be used for cleaning the ink fountain 9, and it is not necessary to newly provide a dedicated cleaning device for cleaning the ink fountain 9. The size can be reduced, and the cost can be reduced.

Next, the operation of cleaning the ink roller will be described with reference to FIG. When the ink cleaning button 34 is turned on in S1 in FIG. 5, the calling drive device 37 is turned off in S21 in FIG. 6, and the reciprocating operation of the calling roller 15 is stopped. As shown in FIG. The contact state of the kneading roller 16 is maintained.
In S22, the blade attachment / detachment air cylinder 38 is turned on, and the tip of the ink cleaning blade 21 contacts the swing roller 3. In S23, the first cleaning nozzle air cylinder 30 is turned on, the rod 30a advances, and the supply direction of the first cleaning nozzle 25 is changed to the kneading roller 5 as shown in FIG.
And the rider roller 6.

In step S24, the second cleaning nozzle solenoid valve 40 is opened, and the kneading roller 1
6 and to the kneading roller 17. In S25, the first
Of the first cleaning nozzle 2 is opened.
From 5, the cleaning liquid 24 is supplied to the swing roller 5 and the rider roller 6. Thus, the second and first cleaning nozzles 2
Since the ink 13 on each roller constituting the ink transfer roller group 18 is dissolved by the cleaning liquid 24 supplied from the ink cleaning blades 3 and 25, the ink 13 is fixed by the ink cleaning blade 21 without being fixed on the rollers. Are collected in the cleaning liquid tank 20. In S26, the second
Of the second cleaning nozzle 2 is closed.
The supply of the cleaning liquid 24 from 3 is stopped, and in S27,
The first cleaning nozzle solenoid valve 39 is closed, and the supply of the cleaning liquid 24 from the first cleaning nozzle 25 is stopped.

In S28, when the number of times of opening and closing of the first and second cleaning nozzle solenoid valves 39, 40 does not reach the predetermined number set in advance, S24 and S24 are executed.
25, the first and second cleaning nozzles 25,
Supply from 23 is performed. When the ink 13 on each roller constituting the ink transfer roller group 18 is collected as waste liquid in the cleaning liquid tank 20, the number of times of opening and closing the first and second electromagnetic nozzles 39 and 40 for the cleaning nozzle is set in advance in S28. A predetermined number is reached. In S29, the first cleaning nozzle air cylinder 30 is turned off, and the rod 30
As shown in FIG. 1, the first cleaning nozzle 25 rotates clockwise, and the supply direction of the cleaning liquid is directed to the ink cleaning blade 21.

In step S30, the first cleaning nozzle solenoid valve 39 is opened, the cleaning liquid 24 is supplied from the first cleaning nozzle 25 to the ink cleaning blade 21, and the ink cleaning blade 21 is cleaned. As described above, the cleaning of the ink cleaning blade 21 is performed immediately before the completion of the cleaning operation, so that the cleaning of the tip of the ink cleaning blade 21 with a rag or the like becomes unnecessary. In S31, the first cleaning nozzle solenoid valve is closed, and the supply of the cleaning liquid 24 from the first cleaning nozzle 25 is stopped. In S32, the ink cleaning blade attaching / detaching air cylinder 38 is turned off, the tip of the ink cleaning blade 21 is separated from the swing roller 3, and the cleaning operation is completed.

FIGS. 7 and 8 are side views of a cleaning device of a rotary printing press according to a second embodiment of the present invention. FIG. 7 shows a state in which an ink roller is cleaned, and FIG. Shows the state of cleaning. In the first embodiment, the second
When the rod 30a of the cleaning nozzle air cylinder 30 moves forward and the pipe 26 rotates counterclockwise as shown in FIG. 7, the cleaning liquid 24 supplied from the first cleaning nozzle 25
Are spread on the peripheral surface of the mixing roller 16 located on the upstream side of the ink transfer roller group 18. Further, when the rod 30a is retracted, the cleaning liquid 24 supplied from the first cleaning nozzle 25 is sprayed to the tip of the ink cleaning blade 21, as in the first embodiment described above. ing.

As described above, the cleaning liquid 24 supplied from the first cleaning nozzle 25 can be switched so that it can be selectively supplied to the peripheral surface of the kneading roller 16 and the tip of the ink cleaning blade 21. The cleaning of the ink roller can also be performed by the first cleaning nozzle 25. For this reason, the second cleaning nozzle 23 of the above-described first embodiment that exclusively performs cleaning of the ink roller becomes unnecessary, so that the number of parts can be reduced, the cost can be reduced, and the apparatus can be downsized. Can be.

In this embodiment, the second cleaning nozzle 23 is provided to automatically perform the cleaning of the ink roller. However, the cleaning may be performed manually. The second cleaning nozzle 23 becomes unnecessary.
In the present embodiment, the supply of the cleaning liquid 24 from the second cleaning nozzle 23 is stopped when the ink 13 is discharged from the ink fountain 9, but the ink transfer roller group 18 is cleaned simultaneously with the discharge of the ink 13. If you do, the first
Of the cleaning liquid 24 from the cleaning nozzle 25
The cleaning liquid 24 may be supplied from the cleaning nozzle 23 described above.

Although the cleaning direction is changed by changing the direction of the first cleaning nozzle 25, two cleaning nozzles having different directions may be provided and switched by turning on and off each other. Good. In addition, it is needless to say that the direction of the first cleaning nozzle 25 may be directed only to the ink cleaning blade 21. As described above, when the cleaning means for cleaning only the ink cleaning blade 21 is provided, a cleaning nozzle is provided in the cleaning liquid tank 20,
The cleaning liquid from the cleaning nozzle is guided into the hollow ink cleaning blade 21 and discharged from a plurality of cleaning liquid discharge holes provided in the ink cleaning blade 21 to clean the ink that is to be fixed to the tip of the ink cleaning blade 21. You may make it.

Although the cleaning liquid is directly supplied to the ink cleaning blade 21 by the first cleaning nozzle 25, the cleaning liquid may be supplied to the swing roller 3 in contact with the ink cleaning blade 21. Further, a third cleaning nozzle may be provided in addition to the first and second cleaning nozzles 25 and 23. Further, the supply position of the second cleaning nozzle 23 is not limited to the embodiment, and may be any position as long as it is on the upstream side of the ink cleaning blade 21.

After the ink 13 on the ink transfer roller group 18 has been washed, the ink washing blade 21
When the cleaning liquid is supplied from the cleaning nozzle 25, the ink cleaning blade 21 is brought into contact with the peripheral surface of the swing roller 3, but may be supplied after being separated from the peripheral surface of the swing roller 3. Furthermore, to wash the ink fountain 9,
Although the urn key 11 is fully opened, it is not always necessary to fully open it. Further, in the present embodiment, the ink transfer roller group 1
The determination as to whether the ink 13 on the surface 8 has been washed is made by counting the predetermined number of times by the second counter 41. However, the present invention is not limited to this. May be provided, and the determination may be made based on the brightness or the color of the surface of the ink transfer roller group 18, and various design changes are possible.

[0039]

As described above, according to the first aspect of the present invention, the first cleaning liquid supply means for supplying the cleaning liquid to the front end of the ink cleaning blade for bringing the front end into contact with the ink roller and scraping the ink is provided. As a result, the tip of the ink cleaning blade can be automatically cleaned without manual operation, so that the work of the operator performing the cleaning operation is reduced, and the ink cleaning blade is always cleaned. The ink does not stick to the surface. Therefore, the ink on the ink roller is reliably scraped by the ink cleaning blade. Also, since the ink washing blade will not be forgotten to be washed, when the tip of the ink washing blade comes into contact with the peripheral surface of the ink roller at the next washing,
There is no problem that the blade of the ink cleaning blade is deformed and cleaning failure occurs when cleaning is performed again, and the peripheral surface of the ink roller is not damaged by using the deformed ink cleaning blade.

Further, according to the second invention, in the first invention, there is provided a second cleaning liquid supply means for supplying the cleaning liquid to the ink transfer roller group, and the supply of the cleaning liquid from the second cleaning liquid supply means is provided. Since the cleaning liquid is supplied from the first cleaning liquid supply means at least after completion, the ink cleaning blade can be cleaned after discharging the ink in the ink fountain or after cleaning the ink transfer roller group. The ink does not stick and dry, causing the blade of the ink cleaning blade to deform when the tip of the ink cleaning blade comes into contact with the peripheral surface of the ink roller during the next cleaning, resulting in poor cleaning when cleaning again. The use of the deformed ink cleaning blade does not damage the peripheral surface of the ink roller.

According to the third aspect of the present invention, in the first aspect, the cleaning liquid is supplied from the first cleaning liquid supply means in a state where a gap is formed between the fountain key and the fountain roller. Even if the ink transferred from the jar to the ink transfer roller group is highly viscous, the cleaning liquid from the first cleaning liquid supply means does not cause the ink mass to adhere to the ink cleaning blade. Therefore, when the ink is discharged from the ink fountain, the viscosity of the ink transferred from the ink fountain to the ink transfer roller side is not reduced, and the amount of the ink transferred can be increased. Be shortened.

[Brief description of the drawings]

FIG. 1 is a side view of a cleaning device for a rotary printing press according to the present invention.

FIG. 2 is a side view showing a main part of the cleaning device of the rotary printing press according to the present invention.

FIG. 3 is a development view viewed from a direction III in FIG. 2;

FIG. 4 is a block diagram showing the entire cleaning device for a rotary printing press according to the present invention.

FIG. 5 is a flowchart for explaining the cleaning operation of the ink fountain in the cleaning device of the rotary printing press according to the present invention.

FIG. 6 is a flowchart illustrating an operation of cleaning the ink roller in the cleaning device of the rotary printing press according to the present invention.

FIG. 7 is a side view showing a second embodiment of the cleaning device for a rotary printing press according to the present invention, showing a cleaning state of an ink roller.

FIG. 8 is a side view showing a second embodiment of the cleaning device for a rotary printing press according to the present invention, showing a cleaning state of an ink fountain.

[Explanation of symbols]

9: ink fountain, 10: fountain roller, 11: fountain key, 13 ...
Ink, 18: ink transfer roller group, 21: ink cleaning blade, 23: second cleaning nozzle, 24: cleaning liquid, 2
5 first cleaning nozzle, 30 air cylinder for first cleaning nozzle, 43 control device.

Claims (3)

[Claims] 1. An ink transfer roller group comprising a plurality of ink rollers for receiving ink from an ink fountain and sending ink to a plate cylinder, and an ink cleaning blade for abutting the tip of the ink roller to scrape the ink. A cleaning device for a rotary printing press, wherein a first cleaning liquid supply means for supplying a cleaning liquid near a tip of the ink cleaning blade is provided. 2. The cleaning device for a rotary printing press according to claim 1, further comprising a second cleaning liquid supply unit that supplies a cleaning liquid to the ink transfer rollers, wherein at least the supply of the cleaning liquid from the second cleaning liquid supply unit is performed. A cleaning device for a rotary printing press, further comprising control means for controlling the supply of the cleaning liquid from the first cleaning liquid supply means after completion. 3. The cleaning device for a rotary printing press according to claim 1, wherein a cleaning state in which a cleaning liquid is supplied from a first cleaning liquid supply unit is selected in a state in which a gap is formed between a fountain key and a fountain roller. A cleaning device for a rotary printing press, comprising a control unit.