JPH07195678A - Printing system - Google Patents

Abstract

PURPOSE:To automatically set/detach an ink roll, an ink pan and a doctor blade to a form cylinder, and particularly to reproduce a good touching state of the doctor blade, etc., to the form cylinder. CONSTITUTION:When a horizontal slide mechanism 19 and a vertical slide mechanism 29 are simultaneously driven by an air cylinder as a driving source, a doctor blade 6 is attached/detached to a lower part of a form cylinder 3 from a horizontal direction, and at the same time, an ink pan 5 with an ink roll 4 is attached/detached to the lower part of the form cylinder 3 from a vertical direction. The printing system is so constituted as above.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing system most suitable for use in, for example, an electronic gravure printing system, and more particularly to the attachment / detachment of an inking unit consisting of an ink pan, an ink roll and a doctor blade with respect to a plate cylinder. .

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Unexamined Patent Publication No. 2-1392.
As can be seen in Japanese Patent Publication No. 38-38, in an electronic gravure printing system, which is an example of intaglio printing, a sheet-like plate material having a thickness of about 200 μm (hereinafter, simply referred to as a plate material) formed of a thermoplastic resin such as polyethylene resin. Is described) is used.

In the plate making process by the plate making machine, the plate material is wound around the outer periphery of the plate cylinder and rotated at a high speed.
A laser beam of a semi-reflecting laser that is reciprocated in the axial direction of the plate cylinder is used to make (engrave) image data on the surface of the plate material based on unevenness such as photographs.

Next, in the printing process by the printing press, the plate material made in the previous plate making process is rewound around the outer periphery of the plate cylinder of the printing press. Then, while rotating the plate cylinder at high speed, ink is applied to the image data due to the unevenness of the plate material with an ink roll, and at the same time, the paper, which is the material to be printed, is pressed onto the surface of the plate material by the impression cylinder and sent at high speed. Then, images such as photographs are printed at high speed on the surface of paper or the like.

At this time, in the case of color printing, cyan,
In addition to the three primary colors of magenta and yellow, multicolor overprinting using black or the like is performed if necessary.

Further, according to the electronic gravure printing system, image data due to unevenness can be engraved on the surface of the plate material with high precision by a submicron order by the laser beam emitted from the semiconductor laser, so that an image such as a photograph can be formed. It is possible to print with extremely high accuracy.

By the way, in this kind of electronic gravure printing system, the ink unit is attached to the lower part of the plate cylinder at the time of cleaning the ink unit consisting of the ink pan, the ink roll and the doctor blade, and when the plate material is attached to and detached from the outer periphery of the plate cylinder. Need to be removed.

However, in the conventional electronic gravure printing system, the attachment / detachment mechanism of the inking unit with respect to the plate cylinder is not automated, and the inking unit is attached / detached exclusively by the operator.

[0009]

Therefore, in the conventional electronic gravure printing system, the work of attaching / detaching the inking unit to / from the plate cylinder is very troublesome, the working time is long, and it is inefficient.

Further, it is the actual situation that the delicate adjustment of the contact (contact pressure) of the doctor blade or the like with respect to the plate cylinder when the ink unit is attached or detached is made finely by the experience and feeling of a skilled worker, and the reproducibility is improved. In addition to the chipping, there was a problem that an inexperienced worker could not perform the detaching work of the ink unit.

The present invention has been made to solve the above problems, and can automatically attach and detach an ink roll, an ink pan, and a doctor blade to and from a plate cylinder. It is an object of the present invention to provide a printing system capable of reproducing a hit.

[0012]

In order to achieve the above object, the printing system of the present invention comprises a plate cylinder having a plate material wound around the outer periphery thereof, and a predetermined amount of ink applied to the surface of the plate material. In a printing system provided with an ink pan having an ink roll and a doctor blade, a horizontal slide mechanism for detaching the doctor blade from the horizontal direction to the lower part of the plate cylinder, and an ink pan having the ink roll in the lower part of the plate cylinder. In addition, a vertical slide mechanism that is detachable from the vertical direction and one drive source that simultaneously drives the horizontal slide mechanism and the vertical slide mechanism are provided.

[0013]

In the printing system of the present invention configured as described above, the horizontal slide mechanism and the vertical slide mechanism are simultaneously driven by one drive source to detach the doctor blade from the horizontal direction to the lower portion of the plate cylinder. In addition, the ink pan having the ink roll can be vertically attached to and detached from the lower portion of the plate cylinder.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an electronic gravure printing system will be described below with reference to the drawings.

[Outline of Printing Machine] First, an outline of the printing machine will be described with reference to FIG.

Inside the printing machine 1, two to four plate cylinders 3 each having a sheet-shaped plate material 2 wound around the outer periphery thereof are horizontally arranged. Below each plate cylinder 3, an ink roll 4 is provided. An ink unit 7 composed of an ink pan 5 and a doctor blade 6 is horizontally arranged.

The plate material 2 is composed of a thermoplastic resin sheet of polyethylene resin or the like having a thickness of about 200 μm, and the surface 2a of the plate material 2 has image data 2b (FIG. , See FIG. 2)
Are made (engraved) for each color such as cyan, magenta, yellow and black.

Further, each inking unit 7 arranged at the bottom of each plate cylinder 3 is constructed so that it can be automatically attached to and detached from each plate cylinder 3 by an inking unit attaching / detaching device 8 which will be described later.

In the printing machine 1, the cut printing paper 9 which is the printing material is automatically circulated between the paper feed tray 10 and the paper ejection tray 11 in the order of 2 to 4 plate cylinders 3. A printing paper circulating device 12 is provided to allow each printing cylinder 3 to have a printing paper 9 fed by the printing paper circulating device 12.
An impression cylinder 13 for pressing the plate 2 onto the surface 2a of the plate 2 is arranged.

The printing paper circulation device 12 includes, for example, a paper feed conveyor 14 for feeding the printing paper 9 from the paper feed tray 10 to the lower impression cylinder 13 in the direction of arrow a, and the lower impression cylinder 13
Is configured by a reversing cylinder 15 that transfers the printing paper 9 to the upper impression cylinder 13 in the direction of the arrow b, a paper discharge conveyor 16 that discharges the printing paper 9 from the upper pressure cylinder 13 to the paper discharge tray 11, and the like.

[Description of Printing Process] Then, this printing machine 1
Then, inks 5a of cyan, magenta, yellow, black, etc. are stored in the respective ink pans 5 of the 2 to 4 ink units 7, and the 2 to 4 plate cylinders 3 are respectively rotated in the arrow d direction. , Applying these inks 5a to the surface 2a of the plate material 2 by each ink roll 4,
Excessive ink 5a on the surface 2a of the plate material 2 is scraped off by each doctor blade 6 and collected in each ink pan 5, so that a fixed amount of ink 5a is applied to the surface 2a of the plate material 2.
Apply.

Then, the paper feeding conveyor 14 of the printing paper circulating device 12 feeds the printing paper 9 from the paper feeding tray 10 to the lower impression cylinder 13 in the direction of the arrow a, and the impression cylinder 13 moves the printing paper 9 onto the printing paper 9. The surface 2a of the plate material 2 on the outer periphery of the lower plate cylinder 3
The first printing step is carried out while being pressure-bonded to the plate cylinder 3 and transferred in the direction of arrow e in synchronism with the plate cylinder 3.

Then, the printing paper 9 is continuously turned over to the reversing cylinder 15
Is transferred to the upper impression cylinder 13 in the direction of arrow b, and the impression paper 13 causes the printing paper 9 to be pressed against the surface 2a of the plate material 2 on the outer periphery of the upper impression cylinder 3 while being synchronized with the impression cylinder 13. And a second printing step is performed so as to move in the direction of arrow e.

Then, the printed printing paper 9 is discharged to the paper discharge tray 11 by the paper discharge conveyor 15.
Image data of 2 to 4 colors such as cyan, magenta, yellow and black are sequentially overprinted on the printing paper 9 by the 2 to 4 plate cylinders 3, and desired gravure printing such as photographs is automatically performed.

[Explanation of Ink Unit Removal Device] Next,
The details of the ink unit attachment / detachment device 8 will be described with reference to FIGS.

First, the plate cylinder 3 is horizontal. A horizontal slide mechanism 19 is horizontally mounted on the horizontal base plate 18. The horizontal slide mechanism 19 comprises a horizontal slide member 21, which is a horizontal plate horizontally mounted on a base plate 18 via a pair of left and right horizontal linear guides 20, and is slidable in the directions of arrows f and f '. Is.

A pair of left and right horizontal linear guides 2
Reference numeral 0 is composed of a guide rail 20a fixed horizontally on the base plate 18, and a slider 20a fixed on the lower surface of the horizontal slide member 21 and slid along the guide rail 20a.

A vertical doctor blade first holder 22 in which the doctor blade 6 is horizontally attached in a substantially vertical posture at the upper end is provided with an arrow g on the side surface of the horizontal doctor blade second holder 24 via a horizontal linear guide 23. , G'directions (directions perpendicular to the directions of arrows f and f'and horizontal to each other) are slidably mounted.

The horizontal linear guide 23 is horizontally fixed to the side surface of the doctor blade second holder 24 in a vertical posture and is horizontally fixed to the side surface of the doctor blade first holder 22 in a vertical posture. And a slider 23b that slides along the guide rail 23a.

Then, the horizontal doctor blade second holder 24 is arranged in the length direction of the doctor blade 6 (arrow g,
An arrow h that is horizontal to the upper portion of the horizontal slide member 21 via a vertical support shaft 25 at a substantially central portion in the (g 'direction),
It is mounted rotatably in the h'direction.

A pair of left and right air cylinders 26, which are one drive source, are mounted on the base plate 18 horizontally and in parallel via a pair of left and right brackets 27, and the tips of these cylinder rods 26a are fulcrum shafts. 25, the doctor blade second holder 24 is connected to the other side surface of the doctor blade second holder 24 opposite to the horizontal linear guide 23 side at a right angle via a pair of brackets 24a.

Next, a vertical slide mechanism 29 is attached to the upper part of the horizontal slide mechanism 19. In the vertical slide mechanism 29, a vertical slide guide member 30 having a U-shaped cross section is arranged horizontally above the horizontal slide member 21. The base plate 1 via a pair of left and right symmetrical vertical vertical linear guides 31.
It is mounted on the slider 8 so as to be slidable in the directions of arrows i and i '.

A pair of left and right vertical linear guides 3
1 is fixed to a pair of left and right vertical guide rails 31a vertically fixed to the left and right ends of the base plate 18 and a pair of left and right side plates 30a hanging downward from the left and right ends of the vertical slide member 30. , And a pair of left and right sliders 31b that slide along the guide rails 31a in the directions of arrows i and i '.

A pair of left and right side plates 21a vertically fixed to the left and right ends of the horizontal slide member 21,
A pair of left and right cam mechanisms 32 is attached between the pair of left and right side plates 30a of the vertical slide member 30.

These cam mechanisms 32 are provided with a pair of left and right side plates 31a, one for each left and right, and a total of four cam grooves 3.
3 and four pairs of left and right side plates 21a, which are horizontally fixed to the left and right side surfaces of the pair of left and right side plates 21a and are loosely fitted in the pair of cam grooves 33, that is, a total of four pins 34.

Each of the cam grooves 33 has a horizontal lower portion 31.
A and a high part 33b which is erected obliquely upward from the low part 31a form a substantially V shape.

The ink pan 5 is horizontally attached to the upper portion of the vertical slide member 30 by a pair of left and right brackets 35. The ink roll 4 is rotatably mounted horizontally in the ink pan 5 by the left and right ends of the ink roll shaft 4a.

Next, the doctor blade second holder 24
A lateral vibration drive motor 37 is horizontally and vertically attached via a bracket 38 to one end of the other side surface opposite to the horizontal linear guide 23.

The eccentric rotation pin 39, which is eccentrically rotated by the output shaft 37a of the lateral vibration drive motor 37, is free to play in the vertical groove 40a of the groove member 40 formed at one end of the side surface of the doctor blade first holder 22. It is fitted.

An ink roll drive motor 42 is attached to one end of the vertical slide member 30 via a bracket 43, and the ink roll drive motor 42 is driven by the ink roll via a transmission mechanism 44 such as a belt transmission mechanism. One end of each of the four ink roll shafts 4a is rotationally driven.

An ink recovery tray 6a integrally attached to the outer periphery of the doctor blade 6 is inclined toward the ink pan 5 side, and the ink recovery tray 6a is formed at the upper end of one side of the ink pan 5. The ink pan 5 can be freely moved in and out through the notch 5b in the directions of the arrows f and f '.

[Explanation of Ink Unit Detachment Operation] First, FIG. 2 shows a state in which the inking unit 7 is detached from the plate cylinder 3, in which the ink pan 5 is perpendicular to the position below the plate cylinder 3 in the direction of the arrow i '. It is lowered and the doctor blade 6 is horizontally moved in the direction of the arrow f ′ to the horizontal position below the plate cylinder 3. At this time, the ink recovery tray 6a of the doctor blade 6 is separated from the notch 5b of the ink pan 5 in the arrow f'direction.

Next, FIG. 1 shows a mounting state of the inking unit 7 on the plate cylinder 3, in which a pair of air cylinders 26, which are one driving source, are operated to slide horizontally by these cylinder rods 26a. The horizontal slide member 21 of the mechanism 19 is horizontally slid on the base plate 18 along the pair of left and right horizontal linear guides 20 in the arrow f direction.

Then, the support shaft 25, the doctor blade second
The holder 24, the horizontal direction linear guide 23, and the doctor blade first holder 22 are integrally moved horizontally in the direction of the arrow f so that the doctor blade 6 is horizontal to the surface 2a of the plate material 2 on the outer periphery of the plate cylinder 3. Pressed from the f direction. At this time, the ink recovery tray 6a of the doctor blade 6 is inserted into the notch 5b of the ink pan 5 from the direction of arrow f.

At this time, the pressing force of the doctor blade 6 against the surface 2a of the plate material 2 in the direction of the arrow f can be easily adjusted to an optimum value by the air pressure adjusting means provided in the air cylinder drive circuit described later. Can be adjusted to.

Moreover, since the doctor blade 6 is pressed against the surface 2a of the plate material 2 by the air pressure of the pair of air cylinders 26 in the direction of the arrow f, the impact which is the reaction force from the plate cylinder 3 at the time of pressing is applied. It can be easily absorbed by the cushioning action by the air pressure.

Further, at this time, the doctor blade first holder 22, the horizontal linear guide 23 and the doctor blade second holder 24 are integrally formed, and the horizontal slide member 2 is formed.
1 has a self-centering function that can freely rotate around a vertical support shaft 25 in the directions of the arrows h and h ', so that the doctor blade 6 is always accurately parallel to the plate cylinder 3. The doctor blade 6 can be pressed uniformly against the surface 2a of the plate material 2 while correcting the posture.

Therefore, the surface 2a of the plate material 2 on the outer periphery of the plate cylinder 3
The good contact of the doctor blade 6 with respect to can be reproduced, and the plate material 2 is not damaged at all by the doctor blade 6, and the durability of the plate material 2 can be improved.

On the other hand, at this time, as shown in FIG. 1, the horizontal slide member 21 of the horizontal slide mechanism 19 is vertically slid via the pair of left and right cam mechanisms 32.
The vertical slide member 30 is driven.

That is, when the horizontal slide member 21 is horizontally slid in the direction of the arrow f, a pair of left and right cam mechanisms 32, a total of four cam pins 34, are horizontally slid by the pair of left and right side plates 21a. Member 21
And is moved horizontally in the direction of arrow f.

At this time, a pair of left and right, a total of four cam pins 34, a pair of left and right, a total of four cam grooves 33 in the high part 3 are provided.
After moving from 3b to the low portion 33a, the cam pins 34 relatively push up the cam grooves 34 in the arrow i direction.

As a result, the vertical slide member 30 is vertically pushed up in the direction of arrow i with respect to the base plate 18 along the pair of left and right vertical linear guides 31.

The vertical slide member 30 pushes up the ink pan 5 in the vertical direction of arrow i, so that the ink roll 4 in the ink pan 5 moves to the plate cylinder 3.
The surface 2a of the plate material 2 on the outer periphery of is pressed from the direction of arrow i.

Even at this time, like the doctor blade 6, the surface 2 of the plate material 2 is adjusted by the air pressure adjusting means described above.
The pressing force of the ink roll 4 in the direction of the arrow i against a can be adjusted to an optimum value, and the impact when the ink roll 4 is pressed can be absorbed by the air pressure described above.

[Driving of Ink Roll] In this way,
The above-described printing process is performed with the inking unit 7 attached to the lower portion of the plate cylinder 3, and in this case, the arrow d in FIG.
In synchronization with the rotation of the plate cylinder 3 rotationally driven in the direction, the ink roll drive motor 42 rotationally drives the ink roll 4 in the direction of arrow j in FIG. Is applied to the surface 2 a of the plate material 2 by the ink roll 4.

Then, the excess ink 5a in the ink 5a applied to the surface 2a of the plate material 2 is scraped off from the surface 2a of the plate material 2 by the doctor blade 6, and is placed in the ink pan 5 by the ink recovery tray 5b. A predetermined amount of ink 5a is applied to the surface 2a of the plate material 2 so as to be collected.

[Horizontal Vibration Drive of Doctor Blade] At this time, the eccentric rotary motion of the eccentric rotation pin 39 driven by the output shaft 37a of the horizontal vibration drive motor 37 causes the doctor blade first holder 22 to move through the groove member 40. Lateral vibration (horizontal vibration) is driven in the directions of arrows g and g '.

At this time, the doctor blade first holder 2
2 is laterally driven in the directions of arrows g and g ′ along the horizontal linear guide 23 with respect to the doctor blade second holder 24, and the doctor blade 6 is integrally formed with the doctor blade first holder 22 in the directions of arrows g and g. It is laterally driven in the'direction.

By the lateral shaking operation of the doctor blade 6 in the directions of the arrows g and g ', the doctor blade 6 is more evenly contacted with the surface 2a of the plate material 2 and the trapped dust is surely removed. It is possible,
The performance of scraping off the ink 5a by the doctor blade 6 can be improved.

[Removing Operation of Ink Unit] During cleaning of the inking unit 7 and attachment / detachment of the plate material 2 to / from the plate cylinder 3,
As shown in FIG. 2, the pair of left and right air cylinders 26 are
When FF is performed, the ink pan 5 descends in the direction of the arrow i'by its own weight.

Then, the left and right pairs of the left and right cam mechanisms 33, that is, the four cam pins 34 in total, are relatively moved from the low places 33a in the four left and right cam grooves 33 to the high places 33b. By this, the horizontal slide member 2
1 is moved in the direction of arrow f ', and the doctor blade 6 is moved in the direction of arrow f'.

[Explanation of Ink Circulation Device and Air Cylinder Drive Circuit] Next, referring to FIG. 8, an ink circulation device 46 and an air cylinder drive circuit 54 attached to the ink pan 5 will be described.
Will be explained.

This ink circulation device 46 is used for the ink pan 5
An ink supply path 48 is formed between the ink tank 47 and the ink tank 47, and an ink discharge path 50 is formed between the ink pan 5 and the waste liquid tank 49. An ink circulation path 51 is formed by connecting the ink supply path 48 and the ink discharge path 50 in a bypass shape. An ink return path 52 to the ink tank 47, a cleaning liquid tank 53 to which the cleaning liquid 53a is supplied, and the like are connected in the middle of the ink circulation path 51.

In the ink circulation path 51, a main pump P ₁ (sub pump P ₂ if necessary), an ink filter F _1, etc., valves V ₁ , V ₂ , V ₃ , V ₄ , V ₅ etc. are provided. Has been. A liquid level sensor S ₁ is provided in the ink pan 5 for keeping the liquid level WL of the ink 5a constant.

The main pump P ₁ and the sub-pump P ₂ in the ink circulation path 51 are configured to be commonly driven by an air cylinder drive circuit 54 which drives the two air cylinders 26 with air.
In this air cylinder drive circuit 54, A ₁ is an air compressor, CV ₁ and CV ₂ are check valves, F ₂ is an air filter, R ₁ , R ₂ and R ₃ are regulators, and SP.
₁ , SP ₂ , SP ₃ are speed control units that are air pressure adjusting means,
RV ₁ is a leak valve, SL ₁ and SL ₂ are silencers, V
_{7, V 8, V 9,} V 10, V 11 denotes the valve.

[Operation of Ink Circulation Device] Next, the ink circulation device 46 is driven together with the driving of the two air cylinders 26.
The operation of will be described.

[Air cylinder ON] A ₁ → V ₇ → CV
₁ → F ₂ → R ₁ → V ₁₀ → CV ₂ → SP ₁ → R ₂ → V ₁₁ →
SP ₂ and SP ₃ → Air cylinder 26 is turned on,
As described above, the ink pan 5 and the doctor blade 6
Driving in the directions of arrows i and f is performed.

[Air cylinder OFF] SP ₂ and SP
₃ → V ₁₁ → The air cylinder 26 is turned off by the atmosphere, and the doctor blade 6 is moved in the direction of the arrow f ′ by the downward movement of the ink pan 5 by its own weight in the direction of the arrow i.

[Pump ON] A ₁ → V ₁ → CV ₁ → F ₂
→ R ₁ → V ₉ → R ₃ → Main pump P ₁ or sub pump P ₂ is turned on.

[Ink Supply to Ink Pan] When the main pump P ₁ is turned on, the ink 5a in the ink tank 47 is discharged.
Is automatically supplied into the ink pan 5 through V ₂ → F ₁ → V ₅ . When the liquid level WL of the ink 5a in the ink pan 5 reaches a certain amount, it is detected by the liquid level sensor S ₁ and the main pump P ₁ is turned off.

[Maintenance of liquid level during printing] Then, during printing,
With the liquid level sensor S ₁ , the liquid level W of the ink 5a in the ink pan 5
Since L can be constantly monitored, the ink 5a can be automatically supplied so that the amount of the ink 5a in the ink pan 5 is kept stable and constant. High-quality gravure printing can be performed while the amount of ink 5a applied to the surface 2a of the plate material 2 by the ink roll 4 is constant, and the amount of ink in the ink pan 5 can be automatically controlled.

[Ink circulation during printing] During printing, by turning on the main pump P ₁ , the ink pan 5 → V ₃ → F ₁ →
The ink 5a can be automatically circulated in the order of V ₅ → ink pan 5.

By the automatic circulation action of the ink 5a, dust and ink clumps in the ink 5a are removed by the ink filter F ₁ to purify the ink 5a. It is possible to prevent the material 2, the doctor blade 6, and the printing paper 9 from being scratched or soiled, so that the durability of the plate material 2 and the doctor blade 6 is improved and high-quality gravure printing can be performed.

[Saving the ink] Turning on the main pump P ₁
The ink 5a in the ink pan 5 to V ₃ → F ₂ → V
_The ink 5a can be automatically returned to the ink tank 47 through ₄ and stored in the ink tank 47. It is also possible to directly return the ink 5a in the ink pan 5 from the V ₃ to the ink tank 47 by turning on the sub pump P ₂ .

[Ink discharge to waste liquid tank] When the main pump P ₁ is turned on, the ink 5a in the ink pan 5 is discharged to V
It can be automatically discharged into the waste liquid tank 49 through ₃ → F ₁ → V ₆ . It is also possible to directly discharge the ink 5a in the ink pan 5 from V ₆ to the waste liquid tank 49 by turning on the sub-hump P ₂ .

[Supply of cleaning liquid] ON of the main pump P ₁
The cleaning liquid 53a in the cleaning liquid tank 53 by V ₁ → F
₁ → V ₅ is automatically supplied into the ink pan 5,
The inside of the ink pan 5 and the ink roll 4 can be automatically cleaned.

[Discharging of Cleaning Liquid] After cleaning the ink pan 5, the main pump P ₁ is turned on to pass the cleaning liquid 53a in the ink pan 5 through V ₃ → F ₁ → V ₆ to the waste liquid tank 4
9 can be automatically discharged. The cleaning liquid 53a in the ink pan 5 can be directly discharged from V ₆ to the waste liquid tank 49 by turning on the sub pump P ₂ .

[Circulation of Cleaning Solution] ON of the main pump P ₁
Thus, the cleaning liquid 35a can be automatically circulated in the order of ink pan 5 → V ₃ → F ₁ → V ₅ → ink pan 5.

Then, the cleaning liquid 35a into the ink pan 5
And the automatic circulation of the cleaning liquid 35a, the automatic cleaning of the inside of the ink pan 5 and the ink roll 4,
Since most of the ink passages of the ink supply path 48, the ink discharge path 50, and the ink circulation path 51 can be cleaned, a large amount of labor can be saved in the cleaning work.

The above is a description of one embodiment of the present invention.
The present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention.

[0081]

The printing system of the present invention configured as described above has the following effects.

According to the first aspect of the present invention, by simultaneously driving the horizontal slide mechanism and the vertical slide mechanism by one driving source, the doctor blade is horizontally attached to and detached from the lower portion of the plate cylinder, and the ink pan having the ink roll is also provided. Since it is designed to be vertically attached to and detached from the lower part of the plate cylinder, the ink roll, ink pan and doctor blade can be automatically attached to and detached from the plate cylinder, and the removal work of these can be performed easily and efficiently. In addition, it is possible to reproduce a good contact of the doctor blade or the like with respect to the plate cylinder without requiring a skilled technique.

According to a second aspect of the present invention, since the one drive source is constituted by the air cylinder, the drive mechanism for attaching / detaching the ink roll, the ink pan and the doctor blade is simple, the cost is low, and the air pressure of the air cylinder is small. By adjusting, the pressing force of the doctor blade or the like against the plate cylinder can be easily adjusted to the optimum value, and the cushioning action of the air pressure of the air cylinder allows the shock when the doctor blade or the like is pressed against the plate cylinder. As a result, it is possible to reproduce a good contact of the doctor blade or the like with the plate material, and to improve the durability of the plate material without damaging the plate material. Therefore, no skill is required, and even an inexperienced operator can easily perform the attachment / detachment work of the ink unit by operating the switch.

According to a third aspect of the present invention, a substantially central portion in the length direction of the doctor blade is horizontally rotated around a vertical spindle on an upper portion of the horizontal slide member which is horizontally slid by the horizontal slide mechanism. Since it is attached freely, when the doctor blade is pressed against the plate cylinder, the doctor blade always presses evenly on the surface of the plate material by the self-aligning function by the rotating action around the vertical axis of the doctor blade. It does not damage the plate material.

According to a fourth aspect of the present invention, the ink pan is attached to an upper portion of a vertical slide member vertically slid by the vertical slide mechanism, and the vertical slide member is vertically moved by the horizontal slide member of the horizontal slide mechanism. Since a cam mechanism for driving in the direction is provided and the horizontal slide member is driven by the one drive source, one drive source such as an air cylinder
The mechanism for driving the horizontal slide member and the vertical slide member at the same time becomes very simple and can be manufactured at low cost.

According to a fifth aspect of the present invention, the doctor blade first holder holding the doctor blade is attached to the doctor blade second holder slidably along the length of the doctor blade, and the doctor blade second holder is attached.
The substantially central portion of the holder in the longitudinal direction is attached to the upper part of the horizontal slide member so as to be rotatable in the horizontal direction around the vertical support shaft, and the horizontal vibration drive motor attached to the doctor blade second holder is used to drive the doctor. Blade first
Since the holder is configured to be horizontally shaken along the length direction of the doctor blade, dust and the like caught on the doctor blade can be reliably removed, and the performance of the ink scraping action by the doctor blade can be improved. .

[Brief description of drawings]

FIG. 1 is a partially cutaway side view illustrating a mounting state of an inking unit on a plate cylinder of an inking unit attaching / detaching device in an embodiment of a printing system of the present invention.

FIG. 2 is a partially cutaway side view for explaining a detached state of the inking unit from the plate cylinder of the inking unit detaching device.

FIG. 3 is a plan view of the same ink unit attachment / detachment device.

FIG. 4 is a sectional front view taken along the line AA of FIG.

5 is a cross-sectional plan view taken along the line BB of FIG.

6 is a cross-sectional side view taken along the line CC of FIG.

7 is a cross-sectional side view taken along the line DD of FIG.

FIG. 8 is a perspective view of an ink pan and a vertical slide mechanism portion.

FIG. 9 is a perspective view of a doctor blade and a horizontal slide mechanism portion.

FIG. 10 is a schematic diagram illustrating an ink circulation device and an air cylinder drive circuit.

FIG. 11 is a schematic diagram illustrating an outline of a printing machine.

[Explanation of symbols]

 1 Printing Machine 2 Plate Material 2a Surface of Plate Material 3 Plate Cylinder 4 Ink Roll 5 Ink Pan 6 Doctor Blade 7 Ink Unit 8 Ink Unit Detachment Device 18 Base Plate 19 Horizontal Slide Mechanism 20 Horizontal Linear Guide 22 Doctor Blade 1st Holder 23 Horizontal linear guide 24 Doctor blade second holder 25 Vertical support shaft 26 Air cylinder (driving source) 29 Vertical direction slide mechanism 30 Vertical direction slide member 31 Vertical direction linear guide 32 Cam mechanism 33 Cam groove 34 Cam pin 37 Lateral vibration drive motor 39 Eccentric rotation pin 40 Groove member

Claims (5)

[Claims] 1. A printing system comprising a plate cylinder having a plate material wound around an outer periphery thereof, an ink pan having an ink roll for applying a predetermined amount of ink to the surface of the plate material, and a doctor blade, wherein the doctor A horizontal slide mechanism for horizontally attaching and detaching the blade to the lower portion of the plate cylinder, a vertical slide mechanism for vertically attaching and detaching the ink pan having the ink roll to the lower portion of the plate cylinder, and a vertical slide mechanism for the horizontal slide mechanism. A printing system, comprising: a drive source that simultaneously drives a direction slide mechanism. 2. The printing system according to claim 1, wherein the one drive source is an air cylinder. 3. A substantially central portion in the length direction of the doctor blade is attached to an upper portion of a horizontal slide member that is horizontally slid by the horizontal slide mechanism so as to be horizontally rotatable around a vertical spindle. The printing system according to claim 1, wherein the printing system is a printing system. 4. The ink pan is attached to an upper portion of a vertical slide member that is vertically slid by the vertical slide mechanism, and the vertical slide member is vertically moved by an upper portion of the horizontal slide member of the horizontal slide mechanism. 4. The printing system according to claim 1, wherein the horizontal slide member is driven by the one drive source. 5. A doctor blade first holder holding the doctor blade is slidably attached to a doctor blade second holder along the length direction of the doctor blade, and the doctor blade second holder is attached substantially in the length direction of the doctor blade second holder. The central portion is attached to the upper portion of the horizontal slide member so as to be rotatable in the horizontal direction around the vertical support shaft, and the doctor blade first holder is attached to the doctor blade second holder by a lateral vibration drive motor attached to the doctor blade second holder. The printing system according to claim 3 or 4, wherein the lateral vibration drive is performed along the length direction of the blade.