JPH0558287U - Printing cylinder / roller cleaning device for printing machines - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide an apparatus capable of uniformly injecting a solvent with a simple structure without deteriorating the working environment. [Structure] A brush roller 7 that rotates in contact with the peripheral surface of the blanket cylinder 1 is provided above the cleaning cloth 6 that runs from the peripheral surface of the rotating blanket cylinder 1 toward the winding side of the cleaning cloth 6. A nozzle tube 8 having an injection hole for injecting a solvent is provided on the brush roller 7. A reflecting plate 9 was provided to bring the solvent 10 sprayed from the spray holes into contact therewith and diffuse the solvent 10 so that the solvent 10 was deflected toward the brush roller 7.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a printing cylinder / roller cleaning device for cleaning the peripheral surfaces of printing cylinders such as a blanket cylinder, an impression cylinder, and a transfer cylinder, and rollers such as a wearing roller and a swing roller in various printing machines.

[0002]

[Prior Art]

 Various printing machines such as an offset printing machine and an intaglio printing machine are equipped with printing cylinders such as a plate cylinder, a blanket cylinder, an impression cylinder, and a transfer cylinder, and rollers such as a forming roller and a swing roller. Since foreign matter such as ink residue and paper dust adheres to the peripheral surface of the machine during printing and deteriorates the quality of the printed matter, a printing cylinder / roller cleaning device is attached to remove these foreign matter.

This type of printing cylinder / roller cleaning device, for example, when cleaning a blanket cylinder, extends in the axial direction in the vicinity of the peripheral surface of the blanket cylinder and has both ends rotatably supported by bearings of the device frame. It has a rewinding shaft and a winding shaft, and one or two guide rollers are provided at an intermediate portion between these two shafts. Then, when the take-up shaft is driven by the drive device and intermittently rotates by a predetermined angle, the cleaning cloth such as the non-woven cloth wound around the rewind shaft in another process is intermittently rewound from the rewind shaft. The roller is pressed against the peripheral surface of the blanket cylinder by the guide roller and then wound around the winding shaft. A brush roller is provided in contact with the circumferential surface of the blanket cylinder above the running path of the cleaning cloth from the guide roller toward the take-up shaft. The brush roller is rotated in the same direction so as to be in the opposite direction, and a nozzle for injecting the cleaning liquid is provided above the brush roller.

With this configuration, when the blanket cylinder is rotated, the winding shaft is intermittently rotated by the drive device, and the brush roller is rotated, the blanket cylinder adheres to the peripheral surface of the blanket cylinder. The foreign matter is removed by the rotation of the brush roller and the injection of the cleaning liquid, and is discharged together with the waste liquid onto the cleaning cloth below. Some foreign matter is transferred to the cleaning cloth that is pressed against the peripheral surface of the blanket cylinder by the guide roller, and the cleaning cloth is taken up by the winding shaft until the foreign matter adheres. However, in such a conventional printing cylinder cleaning apparatus, since the cleaning liquid sprayed from the spray holes of the nozzles is concentrated and sprayed at one place, uneven cleaning occurs and this retransfers from the brush roller to the blanket cylinder. However, there is a problem that a sufficient cleaning result cannot be obtained.

Therefore, conventionally, a special nozzle has been used in which a plurality of branch pipes are projected from the nozzle pipe and the cleaning liquid is sprayed from a hole provided in the branch pipe, or a predetermined amount is provided in the pipe path of the nozzle. It has been proposed that the solvent and air of the above are supplied and sprayed in a mist form from the spray hole.

[0006]

[Problems to be solved by the device]

 However, of these conventional devices, the former device that uses a special nozzle has a large number of branch pipes, resulting in high manufacturing costs and a large number of assembly steps. There is a problem that it is difficult to seal the base of the branch pipe so that there is no liquid leakage. In addition, in the latter device that sprays solvent and air in a mist state, it is necessary to provide an air pipe in addition to the solvent pipe, so the production cost including the control system is high. Not only is the wiring and piping troublesome, but there is also the problem that they are sprayed in the form of mist, which scatters around and deteriorates the work environment.

The present invention has been made in view of the above points, and provides a printing cylinder / roller cleaning device of a printing machine, which is capable of spraying a solvent with a simple structure without deteriorating the working environment. The purpose is to do.

[0008]

[Means for Solving the Problems]

 In order to achieve such an object, according to the present invention, in a printing cylinder / roller cleaning device of a printing machine, the above-mentioned printing is performed above a cleaning cloth running after being abutted on the peripheral surface of a rotating printing cylinder or roller. A brush roller, which is driven to rotate in contact with the body and the peripheral surface of the roller, is provided, and a nozzle having an injection hole for injecting a solvent is provided on this brush roller, and at the same time, the solvent injected from this injection hole A reflecting plate was provided that abuts and diffuses so as to change the direction of the brush roller.

[0009]

[Action]

 The cleaning cloth, which is supplied to the peripheral surface of the printing cylinder and rollers, is attached to this peripheral surface and wipes off the contaminated surface, runs toward the winding side. At this time, since the brush roller attached to the peripheral surface of the printing cylinder is rotating above the running cleaning cloth, and the solvent is sprayed from the spray hole to this brush roller, the brush roller scrapes it. The foreign matter is melted with a solvent and then drops onto the cleaning cloth together with the waste liquid. The cleaning cloth is wound up with the cleaning cloth attached. When the solvent is sprayed from the spray holes, a reflector is provided and the sprayed solvent is diffused when it comes into contact with the reflector and is deflected, so that it is sprayed uniformly to each part of the brush roller. .

[0010]

【Example】

 1 and 2 show an example in which the printing cylinder cleaning device of a printing press according to the present invention is applied to a rubber cylinder as a printing cylinder. FIG. 1 is a side view of the printing cylinder cleaning device, and FIG. It is an expanded side view with a reflection plate. In the figure, in the vicinity of the blanket cylinder 1, a hollow rewinding shaft 2 and a take-up shaft 3 extending in the axial direction of the blanket cylinder 1 are rotatably supported at their both ends on a supporting portion of an apparatus frame (not shown). A pair of guide rollers 4, 5 rotatably supported at both ends by bearings of the apparatus frame are rotatably mounted on the peripheral surface of the blanket cylinder 1 with a cleaning cloth 6 interposed therebetween. Are pressed against each other.

In a separate step, a belt-shaped cleaning cloth 6 made of non-woven fabric or the like is fully wound, and the rewinding shaft 2 mounted on the apparatus frame rewinds the wound cleaning cloth 6 to the guide roller 4. The cleaning cloth 6 is guided to the winding shaft 3 via the guide roller 5. Initially, the winding shaft 3 mounted on the apparatus frame in an empty state is driven by a driving device (not shown) to rotate intermittently, and the cleaning cloth 6 guided from the guide roller 5 is intermittently moved as shown in the drawing. It is configured to be wound up.

Above the running path of the cleaning cloth 6 from the guide roller 5 toward the winding shaft 3, a brush roller 7 having a hollow central shaft and a large number of bristles planted on the peripheral surface of the cleaning roller 6 The brush roller 7 is rotatably supported by being attached to the peripheral surface of the blanket cylinder 1. The brush roller 7 is a rubber roller so that the circumferential direction of the peripheral surface thereof is opposite to that of the blanket cylinder 1, as indicated by the arrow in the figure. It is driven to rotate in the same direction as the case 1. By doing so, the brush roller 7 is configured to scrape off foreign matters such as ink residue and paper dust attached to the peripheral surface of the blanket cylinder 1.

Reference numeral 8 denotes a nozzle pipe connected to a solution container (not shown) by a pipe or the like, and has a large number of injection holes formed in the lower portion thereof so that the injection direction is directed obliquely downward. The nozzle tube 8 is fixed with a reflector plate 9 having substantially the same length as the nozzle tube 8. By doing so, when a pump or the like (not shown) is rotated, the solution 10 is sprayed from the spray hole, and the sprayed solution 10 is reflected and diffused by being in contact with the reflecting plate 9 so that the solution 10 is deflected. It is configured to be uniformly ejected in each direction toward the brush roller 7.

Further, below the brush roller 7, a scraping member 11 supported in a fixed state is provided by inserting a bending piece into the planted hair of the rotating brush roller 7 to scrape the planted hair. The foreign matter or waste liquid that has adhered to the flocked hair and has rotated is dropped onto the traveling cleaning cloth 6. Further, a hole 11a for discharging waste liquid or the like is provided at the lower end of the scraping member 11.

The operation of the printing cylinder / roller cleaning device configured as described above will be described. The cleaning cloth 6 is rewound from the rewinding shaft 2 and pressed against the peripheral surface of the blanket cylinder 1 by the guide rollers 4 and 5, and then the winding shaft 3 is intermittently rotated to wind the cleaning cloth 6 thereon. Then, when the blanket cylinder 1 and the brush roller 7 are rotated in the directions in which the facing peripheral surfaces are opposite to each other as indicated by the arrow in the figure, the foreign matter adhering to the peripheral surface of the blanket cylinder 1 is removed. , 5 is wiped off by the cleaning cloth 6 and carried away, and is also scraped off by the brush roller 7.

At this time, when the solution 10 is ejected from the ejection hole of the nozzle tube 8, the ejected solution 10 is reflected by the contact with the reflection plate 9 so as to be deflected and diffused. As a result, the brush roller 7 Since the solution 10 is uniformly sprayed toward each part of the blanket cylinder 1, the solution 10 can be uniformly supplied to the peripheral surface of the blanket cylinder 1, and the scraped foreign matter is surely dissolved and the bristles of the brush roller 7 are sprayed together with the waste liquid. Be carried around. A scraping member 11 is provided below the brush roller 7 with the bent pieces inserted in the hair transplants. Since the bent pieces scrape off the hairs, they are attached to the hair transplants and carried around. The foreign matter and the waste liquid are dropped from the hole 11a and the tip portion of the scraping member 11 onto the traveling cleaning cloth 6, and then the cleaning cloth 6 is wound while being impregnated with the foreign matter and the waste liquid. That is, since the bristles of the brush roller 7 are scraped off by the scraping member 11, removal of foreign matters and waste liquid is promoted.

When the cleaning cloth 6 on the rewinding shaft 2 is exhausted by repeating such cleaning, the empty rewinding shaft 2 and the rewinding shaft on which the cleaning cloth 6 is fully wound in another process are removed. At the same time as replacing, remove the take-up shaft 3 on which the contaminated cleaning cloth 6 is wound, discard the used cleaning cloth 6, attach the empty winding shaft 3 to the device, and then rewind the new cleaning cloth 6. Pull out from the shaft 2 and wind.

In this embodiment, the present invention is applied to the blanket cylinder as the printing cylinder, but the invention is also applied to printing cylinders other than the blanket cylinder such as an impression cylinder, a transfer cylinder, and a discharge cylinder. In addition, the same effect can be obtained because the same can be applied to the rollers such as the attachment roller and the swing roller.

[0019]

[Effect of the device]

 As is apparent from the above description, according to the present invention, in the printing cylinder / roller cleaning device of the printing machine, the printing cylinder is placed above the rotating printing cylinder or the cleaning cloth running after being attached to the peripheral surface of the roller. By disposing a brush roller that is driven to rotate in contact with the peripheral surface of the roller and the roller, and provided with a nozzle equipped with a spray hole for spraying a solvent on this brush roller, foreign matter on the peripheral surface of the printing cylinder is cleaned. In addition to being wiped off with a brush, it is scraped off with a brush roller and dissolved by the solvent sprayed from the nozzle hole of the nozzle pipe, then dropped on the cleaning cloth and collected. Since there is no need to provide a connected recovery device, the structure is simplified, and the waste liquid treatment work is eliminated, which reduces labor and improves the machine operating rate and cleaning effect. Further, by providing a reflection plate that abuts the solvent sprayed from the spray hole so that the solvent is deflected toward the brush roller, the solvent sprayed from the spray hole is diffused by the reflector plate. Since it is sprayed uniformly to each part of the, the cleaning effect does not occur, the cleaning effect is improved, and a special nozzle is installed to eliminate the cleaning unevenness as in the past, or a solvent is sprayed in a mist form. Since there is no need to install a device, the number of parts and the number of assembling steps are reduced, and the working environment is improved without the atomized solvent scattering to the surroundings.

[Brief description of drawings]

FIG. 1 is a side view of a printing cylinder / roller cleaning device of a printing machine.

FIG. 2 is an enlarged side view of a nozzle and a reflection plate.

[Explanation of symbols]

 1 blanket cylinder 2 rewinding shaft 3 winding shaft 6 cleaning cloth 7 brush roller 8 nozzle tube 9 reflecting plate 10 solvent

Claims (1)

[Scope of utility model registration request] 1. A brush roller, which is rotatably driven in contact with the peripheral surface of the printing cylinder / roller, is disposed above the cleaning cloth running after being abutted on the peripheral surface of the rotating printing cylinder / roller. A nozzle provided with an injection hole for injecting a solvent to the brush roller, and a reflection plate for abutting the solvent injected from the injection hole and diffusing the solvent so that the solvent is deflected toward the brush roller. A printing cylinder / roller cleaning device for a printing press.