JP2011183369A - Ultrasonic cleaning apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic cleaning apparatus for washing an alkaline ink that is incorporated into the recessed part of a roller and fixed. <P>SOLUTION: The ultrasonic cleaning apparatus washes the alkaline ink that is adhered at the bottom of the recessed part of a material 7 (roller) to be washed with the maximum effect by irradiating ultrasonic vibration from an ultrasonic element 1 to a liquid in a nozzle chamber 4 through a vibration plate 2 which is in contact with the ultrasonic element 1 to produce an ultrasonic washing liquid and by maintaining the material 7 to be washed to a constant distance of an integer multiple of 1/2 of one wave length from the vibration plate 2 in accordance with frequency at the ultrasonic washing liquid within the nozzle chamber 4. The apparatus has a positioning device to determine the position with the material 7 to be washed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an anilox roller of a flexographic printing apparatus and an ultrasonic cleaning apparatus for a printing plate.

A flexographic printing device applies alkaline ink to a cylindrical surface having a fine recess (eg, a square hole with a side of about 0.1 mm) called an anilox roller (hereinafter referred to as a roller). After leaving the alkaline ink alone and scraping it off, it is copied onto a printing plate wrapped around another cylindrical part, and then the printing plate is pressed against the cardboard etc. and printed again on the cardboard etc. The
Conventionally, when it is necessary to clean the alkaline ink, such as when changing the color, to wash the roller to which the alkaline ink has adhered, a strong alkaline detergent is poured into the reservoir of the printer and the roller is immersed in the reservoir. Then, there is a solvent cleaning method in which the alkaline ink adhering to the roller is melted and washed, and a brush cleaning method in which the operator holds the brush etc. by hand and rubs the surface of the roller with a brush etc. is there.
There is also a method of cleaning the roller removed from the flexographic printing apparatus using a roller immersion type ultrasonic cleaning apparatus. (See Patent Document 1 below)

  The printing plate of the flexographic printing apparatus is also cleaned by the same method as that for the roller described above.

  JP-A-11-300299

  However, in the solvent cleaning method and the brush cleaning method, there is a problem that the alkaline ink cannot be completely cleaned when entering and fixing in a recess provided in a roller or the like to which the alkaline ink is adhered.

Also, with the brush cleaning method, the force of pressing the brush against a roller or the like is not constant, and the brush hair is thicker than the recess provided on the roller or the like, and the bottom of the recess can be cleaned. There was also the problem of not.
In the roller immersion type ultrasonic cleaning apparatus using the ultrasonic cleaning apparatus that detaches the roller from the flexographic printing apparatus, there is a problem that it takes time and man-hours because it is necessary to remove the roller from the flexographic printing apparatus main body.

An object of the present invention is to provide an ultrasonic cleaning device (20) which can be cleaned without having to remove a roller from a flexographic printing apparatus main body.

The ultrasonic cleaning apparatus (20) of the present invention has ultrasonic irradiation means, and generates ultrasonic cleaning liquid by applying ultrasonic vibration to the liquid by the ultrasonic irradiation means, and according to the frequency in the ultrasonic cleaning liquid. By holding the object to be cleaned at intervals of an integral multiple of 1/2 of one wavelength, it has a positioning device that decides the interval and can cleanly give the maximum effect of ultrasound to the roller that is the object to be cleaned. It is characterized by the ability to collect after-dirty liquid.
The liquid injected from the water supply port (16) fills the nozzle chamber (4) sealed with the object to be cleaned (roller) (7) and the packing (8) and is collected into the drain port (17). And the object to be cleaned (roller) (7), the cleaning action point (6) has an air removal groove (5) so that air is not positioned in the liquid.

The apparatus of the present invention can clean an object to be cleaned (roller) without removing it from the flexographic printing apparatus main body. Therefore, the time and man-hours required for cleaning the roller can be reduced.

It is a sectional side view which shows the structure of the ultrasonic cleaning apparatus (20) by one Example of this invention. It is AA 'sectional drawing of the ultrasonic cleaning apparatus (20) shown in FIG.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of an ultrasonic cleaning device (20) of the present invention will be described with reference to the drawings.
An ultrasonic cleaning apparatus (20) according to an embodiment of the present invention is for cleaning an object to be cleaned (roller) (7) used in a flexographic printing machine. As shown in FIG. A sonic element (1), a diaphragm (2), a diaphragm packing (3), a packing (8), two positioning roller cores (9), two positioning rollers (10), Nozzle (11), holding handle (12), ultrasonic element storage box (13), water supply hose (14), drainage hose (15), water supply port (16), and drainage port (17) It comprises.

  The ultrasonic element (1) is for generating an ultrasonic wave for cleaning the object to be cleaned (roller) (7) through a liquid.

The ultrasonic element storage box (13) is for accommodating the cylindrical ultrasonic element (1) inside. The front surface of the ultrasonic element storage box (13) is an open surface. A diaphragm (2) is attached to the front surface of the ultrasonic element (1).
The nozzle (11) has a cylindrical hole shape, and one end face is attached to the front surface of the ultrasonic element storage box (13).
The ultrasonic wave irradiated from the front surface of the ultrasonic element (1) is irradiated from the diaphragm (2) to the object to be cleaned (roller) (7) through the liquid in the nozzle (11).

The nozzle (11) has a cylindrical hole shape, and one opening surface is attached to the front surface of the diaphragm (2). The liquid is accommodated in the nozzle (11) in a fluid manner.
A cylindrical water supply port (16) for injecting liquid into the nozzle (11) is integrally attached to the lower surface of the nozzle (11).
There is a diaphragm (2) and a diaphragm packing (3) between the front surface of the ultrasonic element storage box (13) and the nozzle (11), and the liquid injected into the nozzle (11) is stored in the ultrasonic element. A plate-shaped diaphragm packing (3) and a diaphragm (2) are attached so as not to enter the box (13).
A through hole for contacting the diaphragm (2) and the liquid is formed at the center of the diaphragm packing (3).

In order to irradiate the object to be cleaned (roller) (7) with the maximum effect, the two positioning rollers (10) have a front surface (ultrasonic irradiation surface) of the nozzle (11) and an object to be cleaned (roller). ) (7) for positioning so as to be at an interval (18).
For this purpose, the two positioning rollers (10) are attached to the nozzle (11).

  In the above description, the ultrasonic cleaning device (20) according to an embodiment of the present invention has been described as a device for cleaning an object to be cleaned (roller) (7) used in the flexographic printing device. It can also be used for cleaning cylindrical parts and printing plates provided in printing machines other than the apparatus.

For cleaning the printing plate, the planar printing plate can be cleaned by making the shape of the arc on which the nozzle (11) is in contact with the object to be cleaned straight.

The shape of the positioning roller (10) can be in the form of a sphere, cylinder, column, wire, or drive screw.

DESCRIPTION OF SYMBOLS 1 Ultrasonic element 2 Diaphragm 3 Diaphragm packing 4 Nozzle chamber 5 Air removal groove 6 Cleaning action part 7 Object to be cleaned (anilox roll)
8 Packing 9 Positioning Device Roller Core 10 Positioning Device Roller 11 Nozzle 12 Holding Handle 13 Ultrasonic Element Storage Box 14 Water Supply Hose 15 Drainage Hose 16 Water Supply Port 17 Drainage Port 18 Interval

Claims (2)

  It has ultrasonic irradiation means, and ultrasonic vibration is applied to the liquid by this ultrasonic irradiation means to generate an ultrasonic cleaning liquid. In the ultrasonic cleaning liquid, the distance is an integral multiple of 1/2 of one wavelength according to the frequency. An ultrasonic cleaning device with a positioning device for holding the object to be cleaned.   The liquid injected from the water supply port enters the nozzle chamber, and in the nozzle chamber of the cleaning action position located between the diaphragm and the object to be cleaned, the nozzle has an air removal groove and packing, and no air is positioned in the liquid. An ultrasonic cleaning device.

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