JP2001287346A - Cylinder cleaning device for printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylinder cleaning device capable of being installed in a narrow space and completely wiping off water or a solvent from a surface of a cylinder at a cleaning end time. SOLUTION: The cylinder cleaning device is disposed, as shown in the drawing, at a position where a cleaning liquid nozzle 14 is opposed to a scraper 5 for scraping off a dirt from a roll brush. As shown by an arrow (a) and an arrow (b) in the drawing, a cylinder 9 and a cylinder 11 are rotated in an opposite direction to the roll brush 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll brush type cylinder cleaning device for a printing press.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
A and a scraper 5 for scraping off dirt from the nozzle 3B for spraying the solvent and the roll brush 1 were arranged on the same one side.

However, in recent years, with the downsizing of printing machines,
The interval between adjacent cylinders becomes narrower, and plate replacement work becomes difficult due to the installation of the conventional cylinder cleaning device, and furthermore, there are cases where the cylinder cleaning device cannot be installed to secure the plate replacement work space. It was way.

Further, as shown in FIG. 2, a conventional cylinder cleaning device includes a roll brush 1 moistened with water and a solvent.
Are arranged so as to come into contact with the cylinder, scrape dirt from the cylinder, and then scrape dirt from the roll brush by contacting the scraper 5, so that the rotation direction of the cylinder 9, the cylinder 5, and the roll brush 1 Is the arrow aa,
As shown by the arrow bb, the directions were the same.

As a result, it was not possible to completely wipe off water or solvent from the cylinder surface at the end of cleaning, and it took some time for the cylinder surface to dry completely.

[0006]

SUMMARY OF THE INVENTION In view of the conventional disadvantages, the present invention provides a cylinder which can be installed in a narrow space and can completely wipe off water or solvent from the cylinder surface at the end of cleaning. A cleaning device is provided.

[0007]

In order to achieve the above object, as shown in FIG. 1, a cylinder cleaning apparatus according to the present invention uses a nozzle 2 for spraying water and a nozzle 3 for spraying a solvent to a roll brush 1 and a dirt from the roll brush. Is disposed at a position facing the scraper 5.

As shown by arrows a and b in FIG. 1, the rotation direction of the cylinder 9 and the cylinder 11 and the roll brush 1 are rotated in the opposite direction.

[0009]

As a result, as shown in FIG. 1, the cylinder cleaning apparatus of the present invention does not narrow the plate changing work space even if it is installed in a narrow space.

Further, as in the present invention, a nozzle 2 for spraying water on the roll brush 1 and a nozzle 3 for spraying the solvent
And a scraper 5 for scraping off dirt from the roll brush are arranged at opposing positions, so that arrows a,
As shown by the arrow b, even if the rotation direction of the cylinder 9 and the cylinder 11 and the roll brush 1 are rotated in the opposite direction, the cleaning effect of the cylinder is not reduced.

As a result, at the end of cleaning, water or solvent on the cylinder surface is sufficiently wiped off, and the cylinder surface dries in a short time.

[0012]

An embodiment will be described with reference to the drawings. In this embodiment, the cylinder is a blanket cylinder. In FIG. 1, reference numeral 1 denotes a roll brush, and 7 denotes a roll brush driving motor, which is connected to the roll brush 1 via a gear.

At the start of cleaning, the roll brush 1 is driven to rotate by a motor 7, and at the same time, water is sprayed from a water spray pipe 3 to wet the roll brush 1 with water.

When the roll brush 1 is moistened with water, the entire cleaning device moves forward, and the roll brush 1 simultaneously contacts the blanket cylinder 9 and the blanket cylinder 11 as shown in FIG.

While the roll brush 1 is in contact with the blanket cylinder 9 and the blanket cylinder 11 at the same time, the roll brush 1 continues to rotate and mainly scrapes paper dust.

Next, a solvent is sprayed from a solvent spray pipe 2, and the roll brush 1 is wetted with the solvent.

The roll brush 1 moistened with a solvent keeps rotating and mainly scrapes ink stains.

The paper dust or ink adhering to the roll brush 1 is scraped off by a scraper 5 and falls into a drain pan 8.

The time for spraying water and the time for spraying a solvent can be varied according to the degree of contamination of the blanket cylinder.

Reference numeral 4 denotes a spray pipe drain pan. When there is a dripping from the water spray pipe 3 or the solvent spray pipe 2, it receives the dripped liquid and prevents the liquid from dripping onto the blanket cylinder 11. I have.

After the roll brush 1 is kept in contact with the blanket cylinder 9 and the blanket cylinder 11 for a predetermined time and continues to rotate to clean the blanket cylinder, the entire cylinder cleaning apparatus returns to the standby position shown in FIG.

After returning to the standby position, the roll brush 1 continues to rotate for several seconds, and the paper dust or ink adhering to the roll brush 1 is scraped off by the scraper 5.

After the dirt adhering to the roll brush 1 is scraped off by the scraper 5, the roll brush 1 stops and the cleaning is completed.

[0024]

Since the present invention is configured as described above, the following effects can be obtained.

Even if it is installed in a narrow space, it contributes to downsizing of the printing press without reducing the work space for plate exchange.

Further, even if the roll brush is rotated in the opposite direction to the rotation direction of the cylinder, the cleaning effect of the cylinder is not reduced.

As a result, at the end of the cleaning, the water or the solvent on the cylinder surface is sufficiently wiped off, and the cylinder surface dries in a short time.

That is, it is possible to contribute to the downsizing of the printing press without losing the convenience of the automatic cleaning of the cylinder, and the economical effect on the reduction of the manufacturing cost of the printing press and the economical effect by the reduction of the installation area of the printing press are great. It is.

Further, since the surface of the cylinder dries in a short time, the time during which printing is stopped for cleaning the cylinder is shortened, and the economic effect of improving the productivity of printing is great.

[Brief description of the drawings]

FIG. 1 is a sectional view of a cylinder cleaning device of the present invention.

FIG. 2 is a sectional view of a conventional cylinder cleaning device.

FIG. 3 is a sectional view showing a position where the cylinder cleaning device of the present invention waits before and after a cleaning operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roll brush 2 Solvent spray pipe 3 Water spray pipe 2A Solvent spray pipe 3A Water spray pipe 4 Spray pipe drain pan 5 Scraper 6 Pipe cover 7 Motor 8 Drain pan 9 Blanket cylinder 1 10 Plate cylinder 1 11 Blanket cylinder 2 12 Plate cylinder 2 13 Casing 14 Cleaning liquid nozzle b Blanket cylinder rotation direction a Roll brush rotation direction bb Blanket cylinder rotation direction aa Roll brush rotation direction

Claims (2)

[Claims] A cleaning liquid is sprayed from a nozzle for cleaning liquid onto a rotating roll brush, the roll brush is pressed against the surface of a cylinder to remove dirt, and the dirt is scraped off to a drain pan by a scraper. In the cylinder cleaning device, the components of the cleaning liquid nozzle, the roll brush and the scraper, which are components, are arranged in the device. ,
A cylinder cleaning device characterized by being laid out with a scraper. 2. A cylinder cleaning device according to claim 1, wherein the roll brush is rotated in a direction opposite to a rotation direction of the printing cylinder in the arrangement of the cleaning liquid nozzle, the roll brush and the scraper.