JP2000085111A - Printing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing machine in which amounts of ink uselessly discarded in accordance with change in printing order and waste liquid generated in accordance with washing are controlled, and also recovery and washing work is performed in a short time. SOLUTION: A mounting plate 35 is freely movably provided in the upper part of an ink storage part A comparted between an ink transfer roll 17 and squeeze rollers 18. Two sets of ink-supplying/recovering devices 25 which selectively perform supply of flexographic ink to the ink storage part A or recovery of flexographic ink stored in the storage part A, are provided on the mounting plate 35. Flexographic ink is supplied to the ink storage part A by a first ink- supplying/recovering device 25 and also flexographic ink stored in the ink storage part A is recovered by a second ink-supplying/recovering device. Thereby, flexographic ink stored in the storage part A is held in a dynamic state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a printing machine,
More specifically, the present invention relates to a printing press capable of suppressing the amount of wastefully discarded ink due to a change in print order.

[0002]

2. Description of the Related Art A flexographic printing press used for printing a corrugated cardboard sheet is supplied between a rotatable ink roll and a squeezing roll as disclosed in Japanese Utility Model Laid-Open No. 4-87244. The flexo ink is transferred to a printing plate mounted on a plate cylinder via an ink roll. Since the flexographic ink used in this flexographic printing machine is highly quick-drying, it must be constantly circulated to prevent drying and solidification. Therefore, in the printing press,
The flexo ink in the ink tank is supplied between the two rolls via a pump and a supply pipe, and the flexo ink retained here is supplied from both ends of both rolls to the tank via a gutter member and a recovery pipe. A circulation mechanism for recovery is adopted.

[0003]

In the conventional flexographic printing press described above, from the viewpoint of facilitating color change accompanying a change in print order or the like, the operation side (one end side in the axial direction of both rolls) of the printing press is used. An ink tank is installed below. For this reason, the length of the supply pipe extending from the ink tank to approximately the center in the axial direction above the two rolls is long. In addition, since the flexo ink staying between the two rolls and flowing out from both ends is received by the gutter members provided at both ends, the length of the collection pipe that runs from both gutter members to the ink tank is also long. That is the current situation.

In recent years, the industry has been required to cope with small lots for processing a large variety and a small amount of corrugated cardboard sheets, and the tendency has been remarkable over the years. Considering this with respect to a printing machine, it means that it is necessary to perform color change within a limited time in order to correspond to printing of various and small amounts of corrugated cardboard sheets. However, as described above, in a conventional flexographic printing press with a long ink circulation system, it is necessary to wash the roll and circulation system with a large amount of water at the time of color change, and complete recovery of ink is impossible and considerable loss occurs. In addition to the above, there is a problem that a treatment facility for cleaning waste liquid is required from the viewpoint of pollution prevention measures, and the cost increases. In addition, since time is required for color change, the loss time is increased, and the production efficiency is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks inherent in the prior art, and has been proposed in order to solve the problem in a favorable manner. It is an object of the present invention to provide a printing machine capable of suppressing the amount of waste liquid generated during washing and performing collection and washing operations in a short time.

[0006]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and appropriately achieve the intended purpose, a printing machine according to the present invention comprises:
A printing cylinder provided with a printing plate, and an impression cylinder disposed opposite to the printing cylinder, wherein ink is transferred to the printing plate, and a corrugated cardboard is provided between the printing cylinder and the impression cylinder rotating in mutually opposite directions. In a printing press configured to perform required printing on the sheet by passing the sheet, an ink transfer roll that rotates in contact with the printing plate of the plate cylinder during printing, and contacts the ink transfer roll during printing. Adjusting means for adjusting the squeezing of the ink amount, a pair of regulating members disposed on both axial sides of the ink transfer roll and the adjusting means, and defining an ink reservoir between the ink transfer roll and the adjusting means; A plurality of ink containers that are arranged in proximity to the ink storage unit and store a predetermined amount of ink; and in each of the ink containers, one opening is inserted into the ink container and the other opening is filled with ink. Storage A tube body to face the a sealed container wherein each ink container is accommodated, is connected to the closed container,
A pressurizing device for supplying ink from the ink container to the ink reservoir through the pipe body by setting the inside of the ink container housed in the closed container to a pressurized state, and the inside of the ink container to a negative pressure state. And an ink transfer means provided with a decompression device for collecting ink from the ink reservoir to the ink container via the tube.

[0007] In order to overcome the above-mentioned problems and to appropriately achieve the intended object, a printing press according to another invention of the present application comprises a printing drum having a printing plate mounted thereon, and an impression cylinder arranged opposite to the printing drum. With
In a printing press configured to transfer ink to the printing plate, pass a corrugated cardboard sheet between the plate cylinder and the impression cylinder rotating in mutually opposite directions, and perform required printing on the sheet. An ink transfer roll that rotates in contact with the printing plate of the plate cylinder, adjusting means that constantly contacts the ink transfer roll during operation to adjust the amount of ink, and both axial sides of the ink transfer roll and the adjusting means. A regulating member that defines an ink reservoir between the ink transfer roll and the adjusting means, an ink supply container that is located close to the ink reservoir, and stores a predetermined amount of ink; While one opening is inserted into the supply container,
A supply tube with the other opening facing the ink storage unit,
The supply tube in which the ink supply container is housed, and the supply tube connected to the supply container, and the inside of the ink supply container housed in the supply container being pressurized, the supply tube is An ink supply unit having a pressurizing device for supplying ink from the ink supply container to the ink storage unit via the ink supply unit, an ink collection container located in proximity to the ink storage unit and capable of storing a predetermined amount of ink, and the ink collection container One of the openings is inserted into the container and the other opening faces the ink storage unit, a collection container for storing the ink collection container, and a collection container connected to the collection container. The ink supply container accommodated in the closed container for collection is provided with a decompression device for causing the inside of the ink supply container to be in a negative pressure state to collect ink from the ink storage unit to the ink collection container via the collection tube. A collection unit configured to collect ink by the ink collection unit while supplying the ink by the ink supply unit, so that the ink stored in the ink storage unit is maintained in a dynamic state without being retained. It is characterized by comprising.

[0008] In order to overcome the above-mentioned problems and to appropriately achieve the intended object, a printing press according to still another invention of the present application comprises a plate cylinder on which a printing plate is mounted and an impression cylinder opposed to the plate cylinder. A printing apparatus configured to transfer ink to the printing plate, pass a corrugated cardboard sheet between the plate cylinder and the impression cylinder rotating in mutually opposite directions, and perform required printing on the sheet. An ink transfer roll that rotates in contact with the printing plate of the plate cylinder during printing, adjusting means for adjusting the amount of ink in contact with the ink transfer roll during printing, and the ink transfer roll and the adjusting means. A pair of regulating members disposed on both sides in the axial direction of the ink transfer roll and the adjusting means to define an ink reservoir, and disposed in close proximity to the ink reservoir to store a predetermined amount of ink. Ink container, and A tube having one opening inserted into the container and the other opening facing the ink reservoir, a closed container in which the ink container is stored, and a closed container connected to the closed container; A pressurizing device for supplying the ink from the ink container to the ink reservoir through the tube by making the inside of the ink container housed in the pressurized state, and making the inside of the ink container a negative pressure state. An ink transfer means provided with a decompression device for collecting ink from the ink storage unit to the ink container through the body, and the pressurizing device and the depressurizing device are alternately operated at appropriate intervals to perform ink supply and ink collection. Are performed alternately, so that the ink stored in the ink storage unit is maintained in a dynamic state without stagnation.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a printing press according to the present invention. FIG. 1 is a schematic side view showing a flexographic printing press according to an embodiment in a state of printing on a cardboard sheet,
The illustrated flexographic printing press 10 includes machine frames 12, 1 separated by a predetermined distance in a direction intersecting the feeding direction of the corrugated cardboard sheet 11.
2 (only a part is shown), the printing plate 13 is detachably mounted, and the plate cylinder 14 is disposed above the pass line of the corrugated cardboard sheet 11, and is disposed to oppose below the pass line of the corrugated cardboard sheet 11. The plate cylinder 14 and the impression cylinder 15 are rotated in opposite directions to each other.

Above the plate cylinder 14, an ink transfer mechanism 16 for transferring flexographic ink to the printing plate 13 is provided. The ink transfer mechanism 16 includes an ink transfer roll 17 for directly transferring the supplied flexographic ink to the printing plate 13, a squeeze roll 18, which is pressed against the roll 17 and performs squeeze adjustment of the ink amount, and a squeeze. It basically comprises a swing mechanism 19 that can displace the ink transfer roll 17 within a required angle range around the rotation axis of the roll 18. By selectively operating the swinging mechanism 19, the ink transfer roll 1 is moved as described later.
7 is an ink transfer position at which the flexographic ink is transferred to the printing plate 13 by bringing the printing plate 7 into contact with the printing plate 13;
3 and can be displaced to an ink washing position where ink transfer is disabled.

That is, the ink transfer roll 17 is disposed so as to be close to and away from the plate cylinder 14, and is rotatable in contact with the printing plate 13 mounted on the plate cylinder 14 when approaching. On the surface of the ink transfer roll 17, anilox is formed in which fine depressions are concavely formed in a required pattern. These fine depressions serve to store a fixed amount of flexo ink and to prevent ink scattering when the roll rotates. are doing. Although an iron-based metal material is used for the ink transfer roll 17, a ceramic coating may be formed on the surface of the metal roll by explosive spraying or the like, and anilox may be engraved on the ceramic coating. Furthermore,
As the ink transfer roll 17, an iron roll without anilox engraving (plated only) or a simple rubber roll can be suitably used.

The squeezing roll 18 disposed adjacent to the ink transfer roll 17 is always in contact with the ink transfer roll 17 during operation, and rotates at a lower speed than the transfer roll 17 to rotate the ink transfer roll 17. It functions to adjust the squeezing of excess ink on the surface. The squeezing roll 18 is preferably made of a flexible material such as an iron-based metal material or rubber. When a rubber material is used, it is recommended that the hardness be appropriately selected within a range of, for example, 50 to 75 degrees of Shore hardness according to the length of the roll.

In the ink transfer mechanism 16 including the ink transfer roll 17 and the squeezing roll 18, the ink transfer roll 1 is rotated around the rotation axis of the squeezing roll 18.
The swing mechanism 19 capable of displacing the actuator 7 in a required angle range is provided. That is, the support brackets 20, 20 (only one is shown) are rotatably supported at both shaft ends of the squeezing roll 18 rotatably disposed on the machine frames 12, 12, respectively, facing the inside of the machine frame 12. An ink transfer roll 17 is rotatably supported between the support brackets 20,20. A piston rod 21a of an air cylinder 21 whose one end is pivotally supported by the corresponding machine frame 12 is rotatably connected to an upper end of each support bracket 20 on the side where the ink transfer roll 17 is pivotally supported. By urging the air cylinders 21 and 21 in synchronization with each other, the ink transfer roll 17 is brought into contact with the printing plate 13 to transfer the flexographic ink, and the ink transfer roll 17 is separated from the printing plate 13 to transfer the flexographic ink. It is configured so that it can be selectively located at an ink washing position where transfer is impossible. The swinging mechanism 19 detects whether or not the corrugated cardboard sheet 11 is passed between the plate cylinder 14 and the impression cylinder 15 by an appropriate detecting means (not shown), and the sheet 11 is passed through. When paper is not printed, the ink transfer roll 17 is set to be automatically separated from the printing plate 13. The mechanism for giving different rotations to the two rolls 17 and 18 is known per se and will not be described.

A stopper bolt 22 is provided at the lower end of each of the support brackets 20, and the support bracket 2
When the ink transfer roll 17 is positioned at the ink transfer position, the adjusting shaft 23 is rotatably supported between the machine frames 12 and 12 facing the lower side of the stopper bolts 2.
2 is a corresponding eccentric ring 24 eccentrically arranged on the adjusting shaft 23
Is configured to abut against. The adjusting shaft 23 is rotated by operating means such as a motor or an air cylinder (not shown).
The position of the ink transfer roll 17 at the ink transfer position can be finely adjusted by rotating the roller 4 at a required central angle.

The ink transfer roll 17 and the squeezing roll 18 are configured such that, when the two rolls 17, 18 are pressed against each other, an ink reservoir A is formed in a contact area in the longitudinal direction of the two rolls. . Then, two ink supply / recovery devices 25 and 26 for selectively supplying the flexo ink to the ink storage portion A or recovering the flexo ink stored in the storage portion A are provided by the two rolls 1 and 2.
It is arranged above and close to 7,18.

Ink supply / recovery devices 25, 26 of the embodiment
Is movably disposed over the entire width of the ink storage section A (the entire length in the axial direction of the two rolls 17 and 18), and its moving mechanism will be described first. A horizontal girder 27 parallel to the ink transfer roll 17 and the squeezing roll 18 is erected between the upper ends of the machine frames 12 and 12, and a guide rail 28 formed on the upper surface of the horizontal girder 27 as shown in FIG. , 29
The movable table 30 is movably supported via the. A pair of sprockets 31, 31 (only one is shown) are rotatably supported by the cross beam 27 at a predetermined interval in the longitudinal direction, and one sprocket 31 is rotated forward and reverse by a drive motor 32. It is composed. An endless chain 33 is wound between the two sprockets 31, and a required portion of the endless chain 33 is fixed to the movable table 30. Accordingly, by driving the drive motor 32 forward and reverse to drive the endless chain 33,
The carriage 30 reciprocates along the guide rails 28 as the vehicle travels. Further, the drive motor 32 is
The rotation direction is controlled to be switched under the condition that one of a pair of position sensors (not shown) arranged apart from each other in the moving direction detects the moving table 30. Is configured to reciprocate in a required area in the width direction. The rotation direction of the motor 32 may be controlled based on a signal from a rotation detector such as an encoder provided in the rotation system of the drive motor 32 to define the reciprocating range of the movable table 30. .

As shown in FIG. 2, a pair of brackets 3 spaced apart in the moving direction of the moving table 30 are provided on the moving table 30.
4, 34 are suspended above the squeezing roll 18, and a mounting plate 35 is horizontally disposed at the lower end thereof. The first ink supply / recovery device 25 and the second ink supply / recovery device 26 are disposed on the mounting plate 35. In addition,
Guide rollers 36, 36 are rotatably supported on the bottom surface of the mounting plate 35, and the guide rollers 36, 36 slidably contact a guide 37 provided in parallel with the rolls 17, 18, The moving table 30 and the mounting plate 35 are configured to move smoothly.

The first ink supply / recovery device 25 disposed on the right side of the mounting plate 35 in FIG. 2 is the first ink supply / recovery device 25 disposed on the mounting plate 35 extending outward from the right bracket 34. A first ink container 39 in which a predetermined amount of flexo ink is stored inside the closed container 38.
However, the two members 38 and 39 are housed so that they can be taken out in a state where the internal spaces thereof communicate with each other. The first closed container 38 includes a main body 40 that opens upward, and a detachable lid 41 that covers an upper opening of the main body 40, and hermetically seals the internal space with the first ink container 39 housed therein. It is configured to be in a state. It should be noted that the color change accompanying the order change can be handled by replacing the first ink container 39. In addition, in the washing operation accompanying color change, the first
A cleaning liquid container in which a cleaning liquid (water) is stored is housed in the closed container 38, and the ink transfer roll 17 and the squeezing roll 18 are cleaned using the cleaning liquid stored in the cleaning liquid container as described later. Is done.

A first tube 42 is hermetically attached to the lid 41 of the first closed container 38 so as to penetrate inward and outward.
One opening 42a of the tube 42 is connected to the first closed container 38.
And is immersed in the flexo ink stored in the first ink container 39 stored in the first ink container 39. Further, as shown in FIG. 1, the other opening 42b of the first pipe 42 is
It is mounted on the holder 43 and faces the ink reservoir A. The first holder 43 is moved up and down between a raised position and a lowered position by a first raising and lowering device 44 disposed on the mounting plate 35. In the raised position, the liquid level sensors 60 and 6 described later are used.
A setting is made such that the other opening 42b of the first tube 42 is immersed in the flexo ink in which the liquid level stored in the ink storing section A is defined as 0. In the lowered position of the first holder 43, the other opening 4 of the first pipe 42 is located.
2b is configured to face the bottom of the ink storage section A so that the remaining flexographic ink can be recovered to the maximum. In addition, if the structure of the first pipe body 42 is described in more detail,
A rigid first tube attached to the lid 41,
The first holder 43 includes a second tube having rigidity and a third tube having flexibility connecting the two tubes. The first tube 43 is raised and lowered by the third tube being flexible. It is configured to allow movement. In addition, the first tube 42 may be a single tube as long as the first holder 43 can move up and down.

As shown in FIG. 3, the first ink supply / recovery device 25 is a first ink transfer device connected via a pipe line 45 connected to the lid 41 of the first closed container 38.
(Ink transfer means) 46 is provided. The first ink transfer device 46 includes a pressurizing device 47 that raises the internal pressure of the first closed container 38 and the first ink container 39 to a level higher than the outside air pressure (changes to a pressurized state) via a conduit 45, and a conduit 45. First through
A decompression device 48 for lowering the pressure inside the closed container 38 and the first ink container 39 to a level lower than the outside air pressure (a negative pressure state), and both devices 47 and 48 inserted into the pipe 45 and the first closed container 38
And a switching valve 49 for switching the communication state with the control valve.
That is, under the condition that the first closed container 38 and the pressurizing device 47 are communicated by the switching valve 49, the pressurizing device 47 is operated and the first ink container 39 stored in the first closed container 38 is operated.
Is pressurized, the flexo ink stored in the ink container 39 is supplied to the ink storage section A via the first tube 42. In addition, the switching valve 49 is switched so that the first sealed container 38 and the pressure reducing device 48 communicate with each other.
By operating the pressure reducing device 48 to make the inside of the first ink container 39 housed in the first airtight container 38 a negative pressure state, the flexo ink stored in the ink storing part A is made into the first tube body. The ink is sucked and collected by the first ink container 39 via the first ink container 39. As described above, in the embodiment, since the first ink supply / recovery device 25 has both functions of ink supply and ink recovery, the first ink container 39 functions as an ink supply container or an ink recovery container. , The first tube 42 functions as a supply tube or a collection tube, the first sealed container 38 functions as a supply sealed container or a collection sealed container, and the first ink transfer device 46 includes an ink supply unit or It functions as an ink collecting means.

The second ink supply / recovery device 26 disposed on the left side of the mounting plate 35 in FIG. 2 has the same configuration as the first ink supply / recovery device 25, and Second closed container 5 in which ink container 50 is stored
1, a second ink transfer device 52 including a pressurizing device 47, a depressurizing device 48, and a switching valve 49, and a second tube 53. One opening 53a of the second tubular body 53 attached to the second closed container 51 is immersed in the flexo ink stored in the second ink container 50, and the other opening 53b is connected to the second opening 53b. It is mounted on the holder 54 and faces the ink storage section A. Also, the second holder 54
Also, like the first holder 43, the second lifting device 55 disposed on the mounting plate 35 moves up and down between the rising position and the lowering position, and the other opening 53b of the second pipe 53 is moved. It is configured so that it can be exposed to the position where it is immersed in the flexo ink or the bottom of the ink reservoir A. Note that the second ink supply / collection device 2 is similar to the first ink supply / collection device 25.
6 also has both functions of ink supply and ink recovery, so the second ink container 50 functions as an ink supply container or an ink recovery container, and the second tube 53 serves as a supply tube or a recovery tube. Function, the second closed container 51
Function as a closed container for supply or closed container for collection,
The second ink transfer device 52 functions as an ink supply unit or an ink recovery unit.

In the embodiment, when ink is supplied to the ink storage section A by the first ink transfer apparatus 46, the ink is recovered from the ink storage section A by the second ink transfer apparatus 52, and vice versa. Ink transfer device 4
When the ink is recovered from the ink storage section A by 6, the ink is supplied to the ink storage section A by the second ink transfer device 52 so that the flexo ink stored in the ink storage section A is retained. Instead, it is kept in a dynamic state to prevent drying and solidification of a highly quick-drying flexographic ink. Further, if both the ink transfer devices 46 and 52 are operated while moving the movable table 30 in the left and right directions by the drive motor 32, the supply and the recovery of the flexographic ink are performed over the entire width of the ink storing section A. The motion is efficiently applied to the entire flexographic ink stored in the storage section A. In the embodiment, the operation state of the first and second ink transfer devices 46 and 52 is selected according to the moving direction of the moving table 30. For example, in FIG. 2, when the moving table 30 moves to the left (the direction in which the second ink supply / collection device 26 is on the forward side), the first ink supply / collection device 25 supplies ink and the second ink The ink is collected by the supply / collection device 26, and the movable table 30 is moved rightward (first ink supply / collection).
When the collection device 25 moves in the forward direction),
The first ink supply / collection device 25 is set to collect ink and the second ink supply / collection device 26 is set to supply ink. That is, when the first tube 42 functions as a supply tube, the other second tube 53 functions as a collection tube, and conversely, the first tube 42 functions as a collection tube. If so, the second tube 53 is configured to function as a supply tube. The first ink transfer device 46 and the second ink transfer device 52 are set to have a higher capacity during ink supply than during ink collection, and flexo ink is stored in the ink storage section A while performing ink recovery. It is configured to be.

As shown in FIG. 1, an air cylinder 57 is disposed on each of the support brackets 20 via a support member 56. The air cylinder 57 has a piston rod 57a.
A plate-shaped regulating member 58 is disposed on the upper surface so as to be able to move up and down. Then, the regulating member 58 is lowered by the urging of each air cylinder 57 so as to be brought into close contact with the axial ends of the ink transfer roll 17 and the squeezing roll 18 as shown in FIG. The ink storage section A to be defined is closed, and the flexo ink supplied from the ink supply / recovery devices 25 and 26 can be stored in the storage section A. A gutter member 59 is provided below both ends of the ink transfer roll 17 and the squeezing roll 18 in the axial direction, and the ink storage unit A is opened by raising the regulating member 58 by the reverse bias of the air cylinder 57 during the cleaning operation. By doing so, the cleaning liquid flowing out of the storage section A is received by the gutter member 59 and collected in the ink pan 63 described later.

Liquid level sensors 60, 60 for detecting the liquid level (liquid level) of the flexographic ink stored in the storage section A during the printing operation are disposed above the vicinity of both ends in the width direction of the ink storage section A. The first and second ink supply / recovery devices 25, 26 are provided depending on the detection conditions of the sensors 60, 60.
Is controlled so that a fixed amount of flexographic ink is always stored in the ink storing section A.

At a substantially tangential position close to the squeezing roll 18, a scraper 61 composed of a long blade-like plate for washing the flexographic ink when changing colors by changing the order or the like is arranged. This scraper 61
Has its tip directed along the tangential direction in a direction opposite to the rotation direction of the squeezing roll 18, and is swingable in the forward and reverse directions by an air cylinder 62 so as to be freely movable toward and away from the roll surface. During the cleaning operation, the air cylinder 62 is urged to urge the scraper 61 to squeeze the roll 1
The cleaning liquid transferred to the roll 18 is scraped up and removed by contact with the roller 8. The removed cleaning liquid is discharged to an ink pan 63 provided below the scraper 61. The ink pan 63 is connected to a waste liquid pipe 64 communicating with a waste liquid tank (not shown), and the waste liquid discharged to the ink pan 63 is collected in a waste liquid tank provided at a required portion. During the cleaning operation, the swing mechanism 1 provided in association with the ink transfer mechanism 16 is used.
According to 9, the ink transfer roll 17 is displaced about the rotation axis of the squeezing roll 18 so that the ink transfer roll 17 is set to face the ink washing position separated from the printing plate 13.

[0026]

Next, the operation of the flexographic printing press according to the above-described embodiment will be described. During the printing operation, the regulating members 58, 58 provided at both axial ends of the ink transfer roll 17 and the squeezing roll 18 are at the lowered position,
Both longitudinal ends of the ink storage section A are closed. Further, the moving table 30 is located on the right end side of the ink storage section A, and the first and second holders 43, 54 of the first and second ink supply / recovery apparatuses 25, 26 correspond to the corresponding lifting / lowering apparatuses 44, 55 and the other opening 4 of the first and second pipes 42 and 53, respectively.
2b and 53b are exposed to positions where they can be immersed in the flexo ink stored in the ink storing section A, respectively. One opening 42a, 53 of the first and second pipes 42, 53
a is the corresponding first and second closed containers 38, 51
And second ink containers 39, 50 stored in
Immersed in flexo ink stored in

In this state, first, the first and second ink supply / recovery devices 25 and 26 perform an ink storing operation. That is, the pressurizing device 47 is connected to the first closed container 38 of the first ink transfer device 46 and the pressurized device 47 is connected to the second closed container 51 of the second ink transfer device 52. Activate 47,47. This allows
The inside of the first and second ink containers 39 and 50 stored in the first and second closed containers 38 and 51 is in a pressurized state, and the flexo ink stored in both the ink containers 39 and 50 becomes the first or second ink container. The ink is supplied to the ink storage section A via the second pipes 42 and 53. This flexographic ink is stored in a state where it is regulated by regulating members 58, 58 facing the shaft ends of both rolls 17, 18. After a predetermined amount of flexographic ink is stored in the ink storage section A, the first and second ink supply / recovery devices 25 and 26 perform the ink supply / recovery operation described below. During the ink storing operation, the movable table 30 may or may not move with respect to the ink storing section A.

In the ink supply / recovery operation of the first and second ink supply / recovery devices 25 and 26, the drive motor 32 is rotated in a required direction to move the movable table 30 to the left, The pressurizing device 47 communicating with the first closed container 38 of the ink transfer device 46 is operated, and the pressure reducing device 48 communicating with the second closed container 51 of the second ink transfer device 52.
Operate. In this case, the inside of the first ink container 39 stored in the first closed container 38 is in a pressurized state, and the ink stored in the ink container 39 is discharged to the first tube 42.
Is supplied to the ink storage unit A via In addition, the inside of the second ink container 50 housed in the second closed container 51 is in a negative pressure state, and the flexo ink stored in the ink storage part A is moved through the second tube 53 to the second ink container 50. (See FIG. 5).

As described above, the first ink supply / collection device 25
While supplying the flexo ink to the ink storage section A at the same time, the flexo ink stored in the storage section A is supplied to the second ink supply section.
By being collected by the collection device 26, the flexographic ink in the ink storage section A is kept in a dynamic state without staying.
As a result, drying and solidification of the highly quick-drying flexographic ink is reliably prevented. Further, as described above, the operations of the first and second ink transfer devices 46 and 52 are controlled so that the ink supply amount is set to be larger than the ink recovery amount. The amount of flexographic ink stored in the ink storing section A gradually increases.

When the movable table 30 is detected by the left position sensor, the drive motor 32 is rotated in the reverse direction to move the movable table 30 to the right, and the first and second ink transfer devices 46, The switching valves 49, 49 of 52 are switched so that the pressure reducing device 48 communicates with the first closed container 38 and the pressurizing device 47 communicates with the second closed container 51. Then, the pressure reducing device 48 of the first ink transfer device 46 operates, and the pressurizing device 47 of the second ink transfer device 52 operates. That is, in this case, the inside of the first ink container 39 housed in the first closed container 38 is in a negative pressure state, and the flexo ink stored in the ink storage part A is in the first tube body 42 via the first tube 42. The ink is collected in the ink container 39 and the second
The inside of the second ink container 50 housed in the closed container 51 is in a pressurized state, and the flexo ink stored in the ink container 50 is supplied to the ink storage part A via the second pipe 53.

In a state where the flexo ink is stored in the ink storing section A, a corrugated cardboard sheet 11 is transferred one by one from a stocker (not shown) to the plate cylinder 14 and the impression cylinder 15.
When the ink is supplied between the ink transfer mechanism 16 and the ink transfer mechanism 16
The ink transfer roll 17 contacts the plate cylinder 14 (printing plate 13) to transfer an appropriate amount of flexographic ink to the surface of the printing plate 13, and the sheet 11 is subjected to required printing. Since the flexographic ink is highly quick-drying, it can be immediately sent to a post-process die cutter or folder glue after printing. In addition, since the flexographic ink spreads over the entire area between the ink transfer roll 17 and the squeezing roll 18, color unevenness in the width direction does not occur at the time of printing, and the operator does not need to constantly monitor the printing state.

When the flexographic ink to be used is changed for color change accompanying a change in print order, etc., ink collection and washing are performed in the following procedure. At the time when the printing operation is completed and the cardboard sheet 11 is no longer passed between the plate cylinder 14 and the impression cylinder 15, the ink transfer roll 17 of the ink transfer mechanism 16 is moved by the swing mechanism 19 It has been moved to the ink washing position which is separated from the cylinder 14 (printing plate 13).

First, with the rotation of the ink transfer roll 17 and the squeezing roll 18 stopped, the first and second
The holders 43, 54 are lowered to the lowering positions, and the other openings 42b, 53b of the first and second pipes 42, 53 face the bottom of the ink storing section A, respectively. The depressurizing device 48 is connected to the first closed container 38 of the first ink transfer device 46 and the depressurizing device 48 is connected to the second closed container 51 of the second ink transferring device 52. Operate. Thereby, the first and second closed containers 38,
51, the first and second ink containers 39,
The inside of 50 is in a negative pressure state, and the flexo ink stored in the ink storing section A is the first or second pipe 42,
The ink is collected by suction into the corresponding ink containers 39 and 50 via 53. At this time, the movable table 30 is moved in the left-right direction, and the pipes 42, 53
The flexo ink can be collected in a short time by facing the other openings 42b and 53b. That is, the flexographic ink remaining in the ink storage section A without being used can be efficiently collected, and the ink can be prevented from being wasted.

Next, the first and second ink containers 39 and 50 in which the unused flexo ink has been recovered are exchanged with the cleaning liquid containers in which the cleaning liquid is stored, respectively. One opening 42 of the bodies 42, 53
a and 53a are inserted and immersed in the cleaning solution. Further, the air cylinder 62 is urged to bring the scraper 61 into contact with the squeezing roll 18 at an appropriate pressure, and the two regulating members 58, 58 are raised by the reverse urging of the air cylinders 57, 57 to cause the ink storage section to rise. Release A. Then, while the ink transfer roll 17 and the squeezing roll 18 are idlely rotated at the same peripheral speed, and the moving table 30 is moved in the left-right direction, the cleaning liquid in the cleaning liquid container is stored in the ink supply / recovery devices 25 and 26. Supply to part A. As a result, the cleaning liquid supplied to the ink storage section A and cleaning the flexo ink adhering to the two rolls 17 and 18 flows out from both ends in the width direction of the storage section A and flows through the ink pan 63 through the trough members 59 and 59. The cleaning liquid adhering to the surface of the squeezing roll 18 is scraped up and removed by the scraper 61, and the cleaning liquid is discharged to the ink pan 63. By supplying the cleaning liquid in the cleaning liquid container to the ink storage section A by the ink supply / recovery devices 25 and 26, the pipes 42 and 53 (the flexo ink circulation system) are also cleaned at the same time. In the cleaning operation, the moving table 30
Is moved to a fixed position (for example, both rolls 17 and 1).
The cleaning liquid may be supplied at substantially the center in the axial direction of FIG.

After the above-described cleaning operation is completed, the cleaning liquid containers mounted on the two ink supply / recovery devices 25 and 26 are replaced with the first and second ink containers 39 and 39 storing the flexographic ink according to the new order. 50, and one opening 42a, 5 of the first and second pipes 42, 53.
The color change is completed by immersing 3a in the flexo ink stored in the corresponding first or second ink container 39, 50.

In the flexographic printing press 10 of the embodiment, two ink supply / discharge units disposed above and adjacent to the ink storage unit A are provided.
By simultaneously performing ink supply and ink recovery by the recovery devices 25 and 26, the highly quick-drying flexo ink stored in the ink storage section A is kept in a dynamic state without being retained, thereby preventing drying and solidification. can do. In addition, since the first and second ink containers 39 and 50 and the ink storing section A are close to each other, the ink circulating system 2
The length of the tubes 42, 53 is short,
Ink remaining on the inside can be reduced, and since the ink transfer devices 46 and 52 do not need to be cleaned, ink loss can be reduced. Further, since the ink circulation system is short, the cleaning can be performed in a short time, so that the order can be changed in a short time, and it is possible to suitably cope with various kinds of small lot printing. In addition, the amount of the cleaning liquid used for ink cleaning is about 60 liters in the conventional flexographic printing machine, whereas it is only about 2 liters in the printing machine. Can greatly contribute to pollution prevention.

In the embodiment, the first ink supply / recovery device 25 and the second ink supply / recovery device 26 are both described as performing ink supply and ink recovery. A dedicated machine may be used, and the other device may be a dedicated machine for ink recovery. Further, as a means for supplying the cleaning liquid to the ink reservoir A during the cleaning operation, without using a cleaning liquid container as described above,
It is possible to use a cleaning liquid supply pipe connected to the cleaning liquid supply source and disposed above the ink storage section A. Further, it is also possible to dispose the cleaning liquid supply pipe on the mounting plate 35 and to move the movable table 30 in the left-right direction when supplying the cleaning liquid to quickly supply the cleaning liquid to the entire ink storage unit A.

Further, a compressed air outlet is provided on the mounting table 35, and the cleaning liquid remaining in the ink reservoir A is removed by the compressed air blown out from the outlet while moving the movable table 30 in the left-right direction. Side and can be discharged to the gutter members 59, 59. In this case, the cleaning operation can be performed in a shorter time, which is preferable.

[0039]

FIGS. 6 to 9 are schematic views respectively showing another embodiment of an ink supply / recovery mechanism in a flexographic printing press, and the basic structure thereof will be described with reference to FIGS. Therefore, only different parts will be described. The same members are given the same reference numerals.

[0040]

First Alternative Embodiment In a first alternative embodiment shown in FIG. 6, a first closed container 38 of the first ink supply / recovery device 25 and a second closed container 51 of the second ink supply / recovery device 26 are provided.
It is configured to be commonly connected to one ink transfer device (ink transfer means) 65 and to supply and recover flexographic ink by the transfer device 65. That is, similarly to the first or second ink transfer device 46, 52, the ink transfer device 65 includes a pressurizing device 47 that can pressurize the internal space of the closed containers 38, 51, and a closed container 38, 51. And a pressure reducing device 48 capable of setting the internal space of the device to a negative pressure state.
The pressurizing device 47 and the depressurizing device 48 are connected to the directional control valve 66, and a first conduit 67 derived from the directional control valve 66 is connected to the first closed vessel 38, and the directional control valve 66 Is connected to the second closed vessel 51 in communication therewith. This directional control valve 66
Is a state in which the pressurizing device 47 is connected to the first closed container 38 and the second closed container 51, the first closed container 38 is connected to the pressurizing device 47, and the second closed container 51 is connected to the depressurizing device 4.
8, the first closed container 38 is provided with a pressure reducing device 48.
And the state in which the pressurizing device 47 is connected to the second closed container 51 and the pressure reducing device 48 is connected to the first closed container 38.
The state is controlled so as to be switched to a state in which it communicates with the second closed container 51.

That is, in the first alternative embodiment, the directional control valve 66 is controlled to switch the pressurizing device 47 to a state in which the pressurizing device 47 communicates with the first closed container 38 and the second closed container 51 during the ink storing operation. , Only the pressurizing device 47 is operated. That is, the first and second closed containers 3
The inside of the first ink container 39 and the inside of the second ink container 50 stored in 8, 51 are both in a pressurized state, and the flexo ink stored in both containers 39, 50 is supplied to the ink storage section A. .

During a printing operation after a predetermined amount of flexo ink is stored in the ink storage section A, the direction control valve 66 connects the pressurizing device 47 to the first closed container 38 and the second closed container. In a state where the pressure reducing device 48 is connected to the first closed container 38 or the pressure reducing device 48 is connected to the first closed container 38 and the pressure device 47 is connected to the second closed container 51, the pressurizing devices 47 and 51 are controlled. The pressure reducing device 48 is operated. That is, during the printing operation, the flexo ink stored in either the first ink container 39 or the second ink container 50 is stored in the ink storing section A.
And the operation of collecting the flexo ink in the storage section A into either the second ink container 50 or the first ink container 39 is performed. As a result, the flexographic ink stored in the ink storing section A is kept in a dynamic state without stagnating, and the drying and solidification of the highly quick-drying flexographic ink are reliably prevented. The direction control valve 6
The state of 6 or 7 is controlled to be switched each time the moving direction of the moving table 30 changes.

In the recovery / washing operation, the directional control valve 66 is switched to a state in which the pressure reducing device 48 is connected to the first closed container 38 and the second closed container 51.
By operating only the pressure reducing device 48, the flexo ink in the ink storage section A is collected in the two ink containers 39 and 50. In the cleaning operation in the first alternative embodiment, the first and second ink containers 39 and 50 are replaced with a cleaning liquid container in which the cleaning liquid is stored, and the cleaning liquid in the cleaning liquid container is supplied to the ink storage section A or supplied to the outside. The cleaning is performed by supplying the cleaning liquid to the ink storage section A via the cleaning liquid supply pipe connected to the source.

[0044]

Second Embodiment In the second embodiment shown in FIG. 7, only the first ink supply / collection device 25 is provided on the mounting plate 35, and the first ink supply / collection device 25 is used during the printing operation.
Thus, only the operation of supplying the flexo ink in the first ink container 39 to the ink storage section A is performed.
Further, a second ink supply / recovery device 26 is fixedly disposed near one longitudinal end of the ink storage section A (for example, the machine frame 12 of the flexographic printing press 10 on the left side of the figure), and a second pipe of the device 26 is provided. The other opening 53b of the body 53 is exposed to the vicinity of the bottom of the ink storing section A via the regulating member 58 on the corresponding side. During the printing operation, the second ink supply / recovery device 26 is configured to perform only the operation of recovering the flexo ink stored in the ink storage unit A into the second ink container 50. That is, in the second alternative embodiment, the first ink supply / collection device 25 has the first
The ink transfer device 46 functions as an ink supply device, and the second ink transfer device 52 included in the second ink supply / recovery device 26 functions as an ink recovery device.

In the second alternative embodiment, the flexo ink is supplied from the first ink container 39 of the first ink supply / recovery device 25 to the ink storage section A, and the flexo ink in the storage section A is discharged simultaneously. 2 Ink supply / recovery device 26
By collecting the ink in the second ink container 50, the flexo ink stored in the ink storage unit A is maintained in a dynamic state without being retained. In this alternative example, the first ink supply / recovery device 2 is used during the printing operation.
It is not essential to move the 5 (moving table 30) in the left-right direction, and the flexo ink may be supplied at a fixed position. In the washing operation, the flexo ink may be collected by operating only the second ink supply / collection device 26 while the operation of the first ink supply / collection device 25 is stopped.
It is also possible to operate the ink supply / recovery device 25 and collect the ink in the device 25 in parallel. The cleaning operation can be performed in the same manner as in the above-described embodiment.

In the above configuration, the first ink supply
The collection device 25 may be dedicated to the collection of flexographic ink, and the second ink supply / collection device 26 may be dedicated to the supply of flexographic ink. Further, as the ink transfer devices 46, 52 of the ink supply / collection devices 25, 26 set only for ink supply, a configuration including only the pressurizing device 47 is adopted, and the ink supply / collection set only for ink collection is adopted. Equipment 25,2
The ink transfer devices 46 and 52 of FIG.
It is possible to adopt a configuration including only

[0047]

Third Embodiment FIGS. 8 and 9 show a third embodiment, which is different from the above-described embodiment in that only one ink supply / collection device is provided. . However,
The basic configuration of the ink supply / recovery device itself is the same as that described with reference to FIGS. That is, for example, the first ink supply / recovery device 2
5 is disposed, and the first pipe body 42 has one opening 42
a is immersed in the flexo ink stored in the first ink container 39, and the other opening 42b faces near the bottom of the ink storing section A. In the third alternative embodiment, the switching valve 49 of the first ink transfer device 46 constituting the first ink supply / recovery device 25 during the printing operation.
However, the state in which the pressurizing device 47 or the depressurizing device 48 communicates with the first closed container 38 is repeated at appropriate intervals, and the first
The operation of supplying the flexo ink in the ink container 39 to the ink reservoir A and the operation of collecting the flexo ink in the ink reservoir A into the first ink container 39 are performed alternately.

In the third alternative embodiment, the first closed container 38 and the pressurizing device 4
By operating the pressurizing device 47 in a state of communicating with the
The flexo ink in the first ink container 39 is supplied to the ink storage section A via the first tube 42. After a predetermined time, the switching valve 49 is switched to operate the pressure reducing device 48 in a state where the first closed container 38 and the pressure reducing device 48 are communicated with each other, so that the flexo ink stored in the ink storing portion A is discharged from the first tube. The ink is collected in the first ink container 39 via the body 42. By repeating the supply and recovery of the ink by the first ink supply / recovery device 25 at appropriate intervals in this manner, the flexo ink stored in the ink storage unit A is maintained in a dynamic state without stagnation. In the recovery / washing operation, the pressure reducing device 48 is operated in a state where the first closed container 38 and the pressure reducing device 48 communicate with each other, so that the flexographic ink remaining in the ink storage section A is recovered in the first ink container 39. be able to. During the printing operation or the recovery / washing operation, it is possible to select to move the first ink supply / recovery device 25 along the ink storage section A or to hold the first ink supply / recovery device 25 at a fixed position.

[0049]

[Modification] FIG. 10 shows a flexographic printing press according to the above-described embodiment, in which an adjusting plate 69 is used instead of the squeezing roll 18 as adjusting means for adjusting the amount of ink in the ink transfer mechanism 16. is there. That is, an adjusting plate 69 made of a long plate is mounted on a pair of support brackets 20, 20 on which the ink transfer roll 17 is rotatably supported, in a forward direction with respect to the rotation direction of the transfer roll 17.
The tip is directed along the tangential direction. The adjusting plate 69 is connected to a motor 70, and the gap between the leading end and the roll surface can be adjusted by forward / reverse biasing of the motor 70 to adjust the amount of ink on the surface of the ink transfer roll 17. Function. Note that the distance between the adjustment plate 69 and the ink transfer roll 17 may be adjusted by a linear actuator such as an air cylinder instead of the motor 70.

The ink transfer roll 17 and the adjusting plate 6
Above 9, an ink storage section A is defined in the longitudinal direction of both members, and both ends in the longitudinal direction of the storage section A are selectively closed and opened by the aforementioned regulating members 58, 58. It is configured as follows. The gap between the tip of the adjusting plate 69 and the surface of the ink transfer roll 17 is
0 to adjust the value to an appropriate value.
In the state where both ends in the longitudinal direction of the ink storage section A are closed by 8, 58, the first and second ink supply
By repeatedly supplying and collecting the flexographic ink by the collecting devices 25 and 26, the flexographic ink stored in the ink storing section A defined by the ink transfer roll 17 and the adjusting plate 69 moves without stagnation. It is kept in the target state.

It should be noted that the ink transfer mechanism 16 using the adjusting plate 69 shown in the modified example can be applied to a flexographic printing press employing the ink supply / recovery mechanism of each of the above-described different embodiments. The direction of the tip of the adjusting plate 69 with respect to the ink transfer roll 17 may be opposite to the illustrated forward direction instead of the illustrated direction. In this case, the adjusting plate 69 is formed in a substantially V-shape so as to face away from the ink transfer roll 17. It is necessary to provide a weir member for storing the flexographic ink.

[0052]

[Modifications] In the printing press according to the embodiment, another embodiment, and the modification, it is assumed that flexographic ink which requires circulation is used. However, in the mechanism of the printing press, it is not necessary to circulate ink. Printing can be performed using a glycol-based ink having a low viscosity and a high-speed drying property. For example, in the embodiment shown in FIGS. 1 to 5, the first ink container storing the glycol-based ink is the first ink container.
One opening of the first tube body in the first ink supply / recovery device housed in the closed container is immersed in glycol-based ink, and the other opening is exposed above the ink reservoir. Then, with the second ink supply / collection device stopped, during the printing operation, only the first ink supply / collection device is operated to supply the glycol-based ink from the first ink container to the ink storage unit, and the collection / collection is performed. At the time of the cleaning operation, the glycol-based ink remaining in the ink storage section is collected in the first ink container by operating the first ink supply / collection device. Since this glycol-based ink does not require circulation, the ink required for circulation can be omitted, the lot unit can be reduced when purchasing the ink, and the inventory cost can be reduced. It is. In such a configuration, the first tube of the first ink supply / recovery device also serves as the ink supply circuit and the ink recovery circuit.

[0053]

As described above, according to the printing press of the present invention, since the ink container is arranged close to the ink reservoir defined between the ink transfer roll and the adjusting means, Circulatory system can be shortened, and the amount of waste ink can be suppressed to a very small amount, and a great saving of ink can be achieved. Further, since the ink circulation system is short, the amount of the cleaning liquid during the cleaning operation can be reduced, and the cleaning waste liquid becomes extremely small, which is extremely advantageous from the viewpoint of preventing pollution. Further, it is possible to shorten the washing time when changing colors due to a change in print order, etc., and it is possible to suitably cope with small lot printing of various kinds and small quantities.

According to the printing press according to another aspect of the present invention, the ink supply means and the ink recovery means are arranged close to the ink reservoir defined between the ink transfer roll and the adjustment means. In addition, the ink circulation system can be shortened, the amount of waste ink can be reduced to a very small amount, and a large amount of ink can be saved. Further, since the ink circulation system is short, the amount of the cleaning liquid during the cleaning operation can be reduced, and the cleaning waste liquid becomes extremely small, which is extremely advantageous from the viewpoint of preventing pollution. Furthermore,
It is possible to shorten the cleaning time when changing colors due to a change in print order, etc., and it is possible to suitably cope with small lot printing of various kinds and small quantities.

Further, according to the printing press according to another aspect of the present invention, since the ink circulation system is constituted by one ink transfer means and the tube, the waste ink can be further reduced. At the same time, the amount of the cleaning liquid during the cleaning operation can be reduced. Further, there is an advantage that the configuration can be simplified and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a flexographic printing press according to an embodiment of the present invention.

FIG. 2 is a schematic front view of a main part showing an ink supply / recovery device in a flexographic printing press according to an embodiment.

FIG. 3 is a schematic diagram illustrating an ink supply / recovery device in a flexographic printing press according to an embodiment.

FIG. 4 is a schematic perspective view of an essential part showing an ink transfer mechanism in a flexographic printing press according to the embodiment.

FIG. 5 is a schematic configuration diagram of an ink supply / recovery device in a flexographic printing press according to an embodiment.

FIG. 6 is a schematic configuration diagram of an ink supply / recovery mechanism according to a first different embodiment.

FIG. 7 is a schematic configuration diagram of an ink supply / recovery mechanism unit according to a second different embodiment.

FIG. 8 is a schematic front view of an ink supply / collection mechanism according to a third different embodiment.

FIG. 9 is a schematic configuration diagram of an ink supply / collection mechanism according to a third different embodiment.

FIG. 10 is a schematic side view of a flexographic printing press according to a modification.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 Corrugated-cardboard sheet 13 Printing plate 14 Plate cylinder 15 Impression cylinder 17 Ink transfer roll 18 Squeezing roll (adjustment means) 38 1st closed container (closed container for supply, closed container for collection) 39 1st ink container (ink supply container, ink Recovery container) 42 First pipe (supply pipe, recovery pipe) 42a One opening 42b The other opening 46 First ink transfer device (ink transfer means, ink supply means, ink recovery means) 47 Pressure device 48 Pressure reducing device 50 Second ink container (ink supply container, ink collection container) 51 Second sealed container (supply sealed container, collection sealed container) 52 Second ink transfer device (ink transfer means, ink supply means, Ink recovery means) 53 Second pipe (supply pipe, recovery pipe) 53a One opening 53b The other opening 58 Regulatory member 69 Adjusting plate (adjusting means) A Ink storing section

Claims (8)

[Claims] The printing plate (13) includes a plate cylinder (14) on which a printing plate (13) is mounted, and an impression cylinder (15) arranged opposite to the printing plate cylinder (14).
While transferring the ink to the corrugated cardboard sheet (11) between the plate cylinder (14) and the impression cylinder (15) rotating in opposite directions to each other.
In the printing press configured to perform required printing on the sheet (11), the printing plate of the plate cylinder (14) at the time of printing.
(13) an ink transfer roll (17) that rotates in contact with the ink transfer roll (17), adjusting means (18, 69) that contacts the ink transfer roll (17) during printing to adjust the amount of ink, and the ink transfer roll (17) and adjusting means (18, 69) are arranged on both axial sides,
A pair of regulating members (58, 58) defining an ink reservoir (A) between the ink transfer roll (17) and the adjusting means (18, 69), and in proximity to the ink reservoir (A); A plurality of ink containers (39, 50) arranged and storing a predetermined amount of ink, and in each of the ink containers (39, 50), one opening (42a, 53a) is provided with the ink container (39, 50). ) And the other opening (42
(b, 53b) facing the ink storage section (A) and a sealed container (38, 51) in which the ink containers (39, 50) are stored.
Connected to the closed container (38, 51), the closed container (38, 5)
By pressurizing the inside of the ink container (39, 51) housed in 1), ink is transferred from the ink container (39, 51) to the ink storage section (A) via the pipe (42, 53). Pressurizing device to supply (47)
And a decompression device for collecting ink from the ink reservoir (A) to the ink container (39, 51) through the pipe (42, 53) by setting the inside of the ink container (39, 51) to a negative pressure state A printing machine comprising: an ink transfer means (46, 52) provided with (48). 2. The ink container (39, 51), a tube (42, 53),
Closed containers (38, 51) and ink transfer means (46, 52)
Ink is stored in the ink storage section (A) by a set consisting of one ink container (39, 51), a tube (42, 53), a closed container (38, 51), and ink transfer means (46, 52). When supplying, the other ink container (51, 39), tube (53, 42), closed container
2. The printing press according to claim 1, wherein the ink is collected from the ink storage section (A) by a set including the ink transfer section (51, 38) and the ink transfer means (52, 46). 3. The printing plate (13) comprising a plate cylinder (14) on which a printing plate (13) is mounted, and an impression cylinder (15) arranged opposite to the printing plate cylinder (14).
While transferring the ink to the corrugated cardboard sheet (11) between the plate cylinder (14) and the impression cylinder (15) rotating in opposite directions to each other.
In the printing press configured to perform required printing on the sheet (11), an ink transfer roll (17) rotating in contact with the printing plate (13) of the plate cylinder (14); Adjusting means (18, 69) for constantly adjusting the ink amount by constantly contacting the ink transfer roll (17) during operation;
(17) and a regulating member disposed on both axial sides of the adjusting means (18, 69), and defining an ink reservoir (A) between the ink transfer roll (17) and the adjusting means (18, 69). (58, 58), an ink supply container (39) which is located in proximity to the ink reservoir (A) and stores a predetermined amount of ink, and one opening (42a) in the ink supply container (39). Is inserted, and the supply tube (42) with the other opening (42b) facing the ink reservoir (A), and the supply closed container (38) in which the ink supply container (39) is stored. ) Is connected to the supply closed container (38), and the supply closed container (3
8) by pressurizing the inside of the ink supply container (39) housed in the ink supply container (3) via the supply tube (42).
Pressurizing device to supply ink from 9) to ink storage section (A)
(47) an ink supply means (46),
(A), an ink collection container (50) capable of storing a predetermined amount of ink, and one opening (53a) inserted into the ink collection container (50), and the other opening ( 53b) a collection tube (53) facing the ink storage unit (A), a collection container (51) in which the ink collection container (50) is stored, and the collection container (51) Connected to the closed container for collection (51)
A decompression device for collecting the ink from the ink storage unit (A) to the ink collection container (50) through the collection tube (53) by setting the inside of the ink supply container (50) stored in the negative pressure state. (Four
8) comprising an ink collecting means (52) provided with the ink collecting means (52) while performing ink supply by the ink supplying means (46). A printing machine characterized in that stored ink is maintained in a dynamic state without stagnation. 4. An ink supply container (39), an ink recovery container (50), an ink supply means (46), and an ink recovery means (52).
4. The printing press according to claim 3, wherein the printing press is disposed above the ink storing section (A). 5. An ink supply container (39), an ink recovery container (50), an ink supply means (46), and an ink recovery means (52).
The printing press according to claim 3 or 4, wherein the printing press is configured to be movable along the ink storing section (A). 6. A printing cylinder (14) provided with a printing plate (13), and an impression cylinder (15) arranged opposite to the printing cylinder (14), wherein the printing plate (13) is provided.
While transferring the ink to the corrugated cardboard sheet (11) between the plate cylinder (14) and the impression cylinder (15) rotating in opposite directions to each other.
In the printing press configured to perform required printing on the sheet (11), the printing plate of the plate cylinder (14) at the time of printing.
(13) an ink transfer roll (17) that rotates in contact with the ink transfer roll (17), adjusting means (18, 69) that contacts the ink transfer roll (17) during printing to adjust the amount of ink, and the ink transfer roll (17) and disposed on both axial sides of the adjusting means (18, 69),
A pair of regulating members (58, 58) defining an ink reservoir (A) between the ink transfer roll (17) and the adjusting means (18, 69), and in proximity to the ink reservoir (A); An ink container (39) that is disposed and stores a predetermined amount of ink, and one opening (42a) is inserted into the ink container (39) and the other opening is
A pipe (42) facing the ink reservoir (A), a sealed container (38) containing the ink container (39), and the sealed container (38) Pressurizing the inside of the ink container (39) housed in the container (38) to supply ink from the ink container (39) to the ink reservoir (A) via the pipe (42). By setting the inside of the device (47) and the ink container (39) to a negative pressure state, the ink reservoir through the pipe (42)
Decompression device for collecting ink from (A) to ink container (39)
(48) comprising an ink transfer means (46), wherein the pressurizing device (47) and the pressure reducing device (48) are alternately operated at appropriate intervals to alternately perform ink supply and ink recovery. Wherein the ink stored in the ink storage section (A) is maintained in a dynamic state without being retained. 7. The ink transfer roll according to claim 7, wherein
2. A squeezing roll (18) rotating in contact with (17).
The printing machine according to any one of claims 1 to 6, wherein 8. The ink transfer roll according to claim 8, wherein
The printing press according to any one of claims 1 to 6, wherein the adjustment plate (69) is a long plate that comes into contact with the (17).