JP3180163B2 - Cylinder cleaning device for printing machine and its cleaning method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for cleaning a cylinder of a printing machine using a brush roll and a cleaning cloth.

[0002]

2. Description of the Related Art An apparatus of this kind is disclosed in Japanese Unexamined Patent Publication No.
No. 78254. What is disclosed herein is a cleaning cloth, a cleaning cloth supply roll for supplying the cleaning cloth, a cleaning cloth winding roll for winding the cleaning cloth, and a winding means for winding the cleaning cloth in the rotation direction of the blanket cylinder, Equipped with a guide roller that presses the cleaning cloth against the blanket cylinder, and a brush roll disposed upstream of the guide roller. The cleaning liquid is sprayed on the brush roll, and the guide roller and the brush roll simultaneously contact the peripheral surface of the cylinder. Then, the cleaning agent and dirt are wiped off with a cleaning cloth, and the brushed dirt or ink is centrifuged by a brush roll and collected in a collecting tub disposed below.

[0003]

However, in the above-mentioned conventional device, the guide roller and the brush roll are simultaneously brought into contact with the peripheral surface of the cylinder. Therefore, when the guide roller comes into contact with the blanket cylinder at the first time. In addition, there is a problem in that the cleaning cloth adheres due to the tack of the ink deposited on the blanket surface of the rubber and damages the cleaning cloth. In addition, there is a drawback in that since the structure requires a collecting tub, it is troublesome to clean the collecting tub.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems or disadvantages, and an object of the present invention is to prevent a cleaning cloth from being adhered and damaged by ink tack on a cylinder peripheral surface. It is an object of the present invention to provide a cylinder cleaning device for a printing machine and a cleaning method for the same, which perform the cleaning effectively and efficiently.

[0005]

In order to achieve this object, a cylinder cleaning device for a printing machine according to the present invention includes a brush roll for contacting a cylinder peripheral surface to clean the cylinder peripheral surface, and a brush roll for cleaning the cylinder peripheral surface. First driving means for moving the cleaning unit closer to and away from the cylinder peripheral surface, a cleaning unit having a cleaning cloth for cleaning the cylinder peripheral surface by contacting the cylinder peripheral surface, A second drive unit for bringing the brush roll into contact with the cylinder before the second drive unit contacts the cleaning cloth with the cylinder; The brush roll is operated to be separated from the cylinder before the cleaning cloth is separated from the cylinder by the driving means. Further, the method for cleaning a cylinder of a printing machine according to the present invention includes a method of contacting a brush roll with a cylinder peripheral surface, then contacting a cleaning cloth with the cylinder, and then separating the brush roll from the cylinder. Is separated from the cylinder.

[0006]

In the present invention, the brush roll first contacts the peripheral surface of the cylinder, and then the cleaning cloth contacts the peripheral surface of the cylinder to perform the cleaning operation. After the cleaning operation,
First, the brush roll separates from the peripheral surface of the cylinder, and then the cleaning cloth separates from the peripheral surface of the cylinder.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a cylinder cleaning device for a printing machine according to the present invention, FIG. 2 is a side view of the main part, and FIG. In these figures, 2
Is a blanket cylinder in contact with an impression cylinder (not shown). A pair of side frames 6 are fixed by stays 4 and 5, and a fulcrum pin 7 serving as a swing center of the cleaning unit 10 and a cleaning unit A roller 8 and a fulcrum pin 9 for supporting the roller 10 on a printing machine are provided.
Are guided by a guide 11 in the left-right direction in the figure.

The cleaning unit 10 includes a cleaning cloth winding mechanism 2.
0, the brush roll mechanism 40, and the brush roll mechanism 40
And a first driving means 60 for independently driving the first driving means. As shown in detail in FIG. 2, the cleaning cloth winding mechanism 20 has a cloth supply shaft 21, a cloth winding shaft 22, a pair of guide rollers 23 and 24, and a shaft mounted coaxially with the cloth supply shaft 21. A ratchet wheel 25 and a swing lever 26 supported coaxially and swingably on a shaft 35 of the cloth winding shaft 22.
, A locking lever 27 supported on a shaft 32 so as to be swingable, and an air cylinder 28.

The cloth supply shaft 21 is connected to a ratchet wheel 25,
The cleaning cloth 30 is connected by a one-way clutch 31 that prevents rotation in a direction of supplying the cleaning cloth 30 to the cloth winding shaft 22.
A claw portion 27a is formed at one end of the locking lever 27, and a cam surface 27b is provided at the upper end surface. The portion 27a is engaged with the ratchet wheel 25. The cloth winding shaft 22 includes a swing lever 26,
The cleaning cloth 30 is connected by a one-way clutch 36 that can rotate only in a direction in which the cleaning cloth 30 is wound around the cloth winding shaft 22.

[0010] At one end of the swing lever 26, a guide roller 26a that slides on a cam surface 27b of the locking lever 27 is provided. The air cylinder 28 is provided with a rod 28a which can move forward and backward.
a and the other end of the swing lever 26 are connected to the connection block 3
7 are connected. Reference numeral 38 denotes a stopper pin which comes into contact with the swing lever 26 and regulates the swing of the swing lever 26 in the counterclockwise direction. Reference numeral 39 denotes a guide roller rotatably supported coaxially with the guide roller 24, formed slightly larger than the guide roller 24 and abutting on the pillow of the blanket cylinder 2. The cleaning cloth 30 supplied from the cloth supply shaft 21 includes:
It is stretched via a pair of guide rollers 23 and 24, and is wound by a cloth winding shaft 22.

A brush roll 41 constituting the brush roll mechanism 40 is disposed downstream of the guide roller 24, and is rotatably supported by a shaft 44. One end of the shaft 44 swings on the shaft 35. The L-shaped lever 42 is mounted on the other end of the L-shaped lever 42 which is freely supported.
As a result, the brush roll 41 is rotated counterclockwise about the shaft 35, whereby the brush roll 41 is also urged toward the blanket cylinder 2. The L-shaped lever 42 has two rollers 46, 4
7 is rotatably supported, and the outer peripheral end of one roller 46 projects from the outer peripheral end of the brush roll 41. The brush roll 41 is connected to another lever 43 by a one-way clutch 49 that can rotate only in a counterclockwise direction in the drawing.

One end of the lever 43 is connected to one end of a link 50, and the other end of the link 50 is connected to the swing lever 26. Reference numeral 52 denotes a spray nozzle for spraying a cleaning liquid, and the sprayed cleaning liquid is diffused by a reflection plate 53 and is sprayed to the brush roll 41. The first driving means 60 includes an air cylinder 61 having a rod 62 which can move forward and backward, a bracket 63 for fixing the air cylinder 61,
It comprises a guide 64 fixed to the bracket 63, and a cam 65 guided vertically by the guide 64 and connected at its lower end to the tip of the rod 62. Cam 6
The roller 47 of the L-shaped lever 42 is in contact with the cleaning unit 1 by means of a cam 65 that moves up and down in accordance with the movement of the rod 62.
Apart from the operation of 0, it is designed to approach and separate from the blanket cylinder 2 independently.

Reference numeral 70 denotes a brush roll that is fixed to the side frame 6 and abuts against the outer peripheral portion of the brush roll 41.
Is a member for removing dirt. 80 is the second
Is connected to the connection block 82, one end of which is swingably supported by the fulcrum pin 9 and one end of which is engaged with the roller 8, a connection block 83 connected to the other end of the connection plate 82, and a connection block 83. And an air cylinder 84 having a retractable rod 85. The second driving unit 80 moves the cleaning unit 10 toward and away from the blanket cylinder 2 around the fulcrum pin 7 by operating the air cylinder 84.

Hereinafter, the operation of cleaning the blanket cylinder will be described. First, in FIG. 3A, the cleaning liquid is diffused from the spray nozzle 52 by the reflection plate 53 and is sprayed onto the brush roll 41. Next, the air cylinder 6 of the first driving means 60
When the rod 62 is retracted into the air cylinder 61 and the cam 65 is moved downward along the guide 64, the roller 47 slides on the cam 65 and the L-shaped The lever 42 swings about the shaft 35 in the counterclockwise direction in the figure, and only the brush roll 41 approaches the peripheral surface of the blanket cylinder 2 as shown in FIG.
At this time, the pair of guide rollers 23 and 24 are
Is separated from the peripheral surface of.

At the same time as or slightly after actuation of the air cylinder 61 of the first drive means 60, the air cylinder 84 of the second drive means 80 is actuated, and the rod 85 is retracted into the air cylinder 84. . Along with this operation, the connection plate 82 rotates counterclockwise about the fulcrum pin 9 in the figure, the roller 8 moves to the left on the guide 11, and the cleaning unit 10 rotates the clock around the fulcrum pin 7. To the cleaning unit 1
0 moves to the blanket cylinder 2 side.

At this time, since the brush roll 41 is already close to the blanket cylinder 2, the peripheral surface of the brush roll 41 contacts the blanket cylinder 2 before the guide roller 39 contacts the pillow of the blanket cylinder 2. The contact width is gradually increased until the cleaning cloth 30 comes into contact with the peripheral surface of the blanket cylinder 2.
With the rotation of the roller, the dirt such as ink and paper dust on the peripheral surface of the blanket cylinder 2 is scraped off, and the guide rollers 39 contact the pillow of the blanket cylinder 2 to stop the movement of the cleaning unit 10 and the cleaning cloth 30. When the ink comes into contact with the blanket cylinder 2, the cleaning liquid is applied to the peripheral surface of the blanket cylinder 2, and since the ink has begun to be scraped off by the brush roll 41, the ink tack has been removed. The cleaning can be performed effectively without causing damage to the cloth.

In this state, as shown in FIG. 3 (c), the ink and paper dust are scraped off by the brush roll 41 for a few seconds, and the remaining dirt together with the cleaning liquid is wiped off by the cleaning cloth 30, and the cleaning operation is performed. Cleaning operation is performed by air cylinder 2
8 is operated to advance the rod 28a. With this operation, the link 50 moves upward, swings the lever 43 counterclockwise, and rotates the brush roll 41 counterclockwise via the one-way clutch 49. The peripheral surface of the blanket cylinder 2 is slid by the roll 41.

As a result of the cleaning operation, dirt such as ink and paper dust on the peripheral surface of the blanket cylinder 2 scraped off from the brush roll 41 and the cleaning liquid adhering to the brush roll 41 are forcibly removed by the dirt removing member 70. Dirt on the blanket cylinder 2 located between the guide roller 24 and the cloth take-up shaft is scattered to the wiped cleaning cloth 30 or the cloth take-up shaft 22, so that a collecting tub for collecting these is required. No cleaning is required.

Further, the swing lever 26 swings counterclockwise in conjunction with the rod 28a, and moves the cloth winding shaft 22 counterclockwise via the one-way clutch 36, ie,
The cleaning cloth 30 is rotated in a winding direction. At this time, the guide roller 26a of the swing lever 26 slides on the cam surface 27b, so that the locking lever 27 swings counterclockwise against the spring 33, and the ratchet wheel 25 and the claw portion 27a Is released, so that the cloth can be wound by the cloth winding shaft 22.

When the cleaning operation is completed, first, as shown in FIG. 3D, the air cylinder 61 of the first driving means 60 is operated to move the rod 62 to the air cylinder 61.
And the L-shaped lever 42 is swung clockwise about the shaft 35 by the cam 65 so that the brush roll 4
Only 1 is separated from blanket cylinder 2. In this state, only the cleaning cloth 30 is brought into contact with the peripheral surface of the blanket cylinder 2 for a few seconds to perform dry wiping.

Thereafter, as shown in FIG. 3E, the air cylinder 84 of the second driving means 80 is operated,
When the rod 85 is advanced from the air cylinder 84,
The connection plate 82 rotates clockwise about the fulcrum pin 9, the cleaning unit 10 rotates counterclockwise about the fulcrum pin 7, and the cleaning cloth 30 separates from the blanket cylinder 2.

In this embodiment, the second driving means 80
Although the entire cleaning unit 10 is moved by the above, the present invention is not limited to this, and only the cleaning cloth take-up mechanism 20 is moved by the second driving means 80, whereby the cleaning cloth 30 is brought into contact with the blanket cylinder 2. In this case, the same operation and effect can be obtained. In short, it is only necessary to give a time difference to the contact between the brush roll and the cleaning cloth with respect to the cylinder. Also,
Although the second driving means 80 is configured to be attached to the printing machine side, it goes without saying that it may be attached to the cleaning unit 10 side.

Further, although a structure using an air cylinder as the driving means is employed, it is needless to say that the present invention is not limited to this, and various design changes such as a hydraulic cylinder can be made. In this embodiment, the cylinder to be cleaned with the cleaning cloth 30 is the blanket cylinder 2. However, the present invention is not limited to this, and it is needless to say that the cylinder can be applied to other printing cylinders or rotating rollers.

[0024]

As described above, according to the present invention, first, the brush roll is brought into contact with the cylinder peripheral surface, and after the brush roll starts to come into contact with the cylinder peripheral surface, the cleaning cloth is brought into contact with the cylinder and wound. Before the cleaning cloth comes into contact with the cylinder, wipe off any dirt such as ink and paper dust on the cylinder surface, and when the cleaning cloth comes into contact with the cylinder,
Ink tack is removed on the peripheral surface of the cylinder,
Therefore, the cleaning cloth can be effectively cleaned without causing the cleaning cloth to be damaged by the ink tack and without causing the cleaning cloth to be involved. In addition, after the cleaning operation was completed, first, the brush roll was separated from the cylinder, and then, the cleaning cloth was separated from the cylinder, and the cleaning cloth was used to wipe the cylinder empty. Dirt, ink or cleaning agent does not remain in the cylinder, and no special tub or the like for collecting these is required, and cleaning is not required.

[Brief description of the drawings]

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

FIG. 2 is a side view of a main part of a cylinder cleaning device for a printing machine according to the present invention.

FIG. 3 is an operation diagram showing a cleaning method of the cylinder cleaning device for a printing machine according to the present invention.

[Explanation of symbols]

 2 blanket cylinder 10 cleaning unit 20 cleaning cloth take-up mechanism 30 cleaning cloth 40 brush roll mechanism 60 first driving means 80 second driving means

Claims (2)

(57) [Claims] A brush roller for cleaning the cylinder peripheral surface by contacting the cylinder peripheral surface; first driving means for moving the brush roll toward and away from the cylinder peripheral surface; Te washing the cylinder circumferential surface cleaning unit with a cleaning cloth, Ri Do the cleaning unit or at least the cleaning fabric and a second driving means for contacting the cylinder circumferential surface, said first driving means
Is the contact of the cleaning cloth with the cylinder by the second driving means.
While touching the brush roll to the cylinder before touching,
Before the cleaning cloth is separated from the cylinder by the second driving means.
Move the brush roll away from the cylinder
Cylinder cleaning apparatus for a printing machine, characterized in that that. 2. A brush roll is brought into contact with a peripheral surface of a cylinder.
A method for cleaning a cylinder of a printing machine, comprising: bringing a cleaning cloth into contact with a cylinder, then separating the brush roll from the cylinder , and then separating the cleaning cloth from the cylinder.