JP2572211Y2 - Cleaning device for printing cylinders and rollers of printing press - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application] The present invention is applicable to various printing presses.
The present invention relates to a printing cylinder / roller cleaning apparatus for cleaning a printing cylinder such as a blanket cylinder, an impression cylinder, and a transfer cylinder, and a peripheral surface of a roller such as a landing roller and a swing roller.

[0002]

2. Description of the Related Art Various printing presses such as an offset printing press and an intaglio printing press are provided with a printing cylinder such as a plate cylinder, a blanket cylinder, an impression cylinder and a transfer cylinder, and rollers such as a setting roller and a swing roller. In the peripheral surface of the printing cylinder and rollers, foreign substances such as ink residue and paper dust adhere to the printing work and deteriorate the quality of printed matter. Therefore, a printing cylinder and roller cleaning device for removing these foreign substances is provided. I have.

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

With this configuration, when the blanket cylinder is rotated, the winding shaft is intermittently rotated by the driving device, and the brush roller is rotated, the blanket cylinder adheres to the peripheral surface of the blanket cylinder. The foreign matter that has been removed is removed by the rotation of the brush roller and the ejection of the cleaning liquid, and is discharged together with the waste liquid onto the lower cleaning cloth. Some foreign matter is transferred to the cleaning cloth pressed against the peripheral surface of the blanket cylinder by the guide roller, and the cleaning cloth is wound around the winding shaft as long as the foreign matter adheres. However, in such a conventional printing cylinder cleaning device, the cleaning liquid injected from the nozzle orifice is intensively injected at one location, so that cleaning unevenness occurs, and this is transferred from the brush roller to the blanket cylinder again. However, there is a problem that a sufficient cleaning result cannot be obtained.

Conventionally, a special nozzle is used in which a plurality of branch pipes are protruded from a nozzle pipe and a cleaning liquid is sprayed from a hole formed in the branch pipe. It has been proposed to supply the air and air to spray the mist from the injection holes.

[0006]

However, among the conventional devices, the former device using a special nozzle has a large number of branch pipes, so that the production cost is high, and the assembly cost is high. In addition to a large number of man-hours, there is a problem that it is difficult to seal so that no liquid leaks from the base of the branch pipe. Further, in the latter device for spraying the solvent and air in the form of a mist, since air piping must be provided in addition to the solvent piping, the manufacturing cost including the control system is increased and wiring and piping are increased. Is not only troublesome, but also has a problem that the mist is scattered around and deteriorates the working environment because the mist is sprayed.

The present invention has been made in view of the above points, and provides a printing cylinder / roller cleaning apparatus for a printing press which enables a simple structure to jet a solvent without deteriorating a working environment. It is intended to be.

[0008]

In order to achieve the above object, according to the present invention, in a printing cylinder / roller cleaning apparatus for a printing press, the printing cylinder runs after being attached to the peripheral surface of a rotating printing cylinder or roller. A brush roller, which is rotatably driven in contact with the peripheral surface of the printing cylinder or the roller, is provided above the cleaning cloth, and a nozzle having an ejection hole for ejecting a solvent to the brush roller is provided. A reflection plate is provided for abutting a solvent jetted from the nozzle and diffusing so as to be deflected toward the brush roller.

[0009]

The cleaning cloth which is supplied to the peripheral surface of the printing cylinder and the roller and is attached to the peripheral surface and wipes off the contaminated surface runs toward the winding side. At this time, a brush roller attached to the peripheral surface of the printing cylinder or the like is rotating above the running cleaning cloth, and the solvent is sprayed from the spray hole to the brush roller. The foreign matter thus obtained is dissolved with a solvent and then falls onto the cleaning cloth together with the waste liquid, and the cleaning cloth is wound up while being attached thereto. When the solvent is ejected from the ejection holes, a reflection plate is provided, and the solvent to be ejected is diffused when it is deflected by contacting the reflection plate, so that the solvent is uniformly ejected to each part of the brush roller. .

[0010]

1 and 2 show an embodiment in which a printing cylinder cleaning apparatus for 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 apparatus. FIG. 4 is an enlarged side view of a nozzle and a reflector. In the figure, near the blanket cylinder 1, a hollow rewinding shaft 2 and a winding shaft 3 extending in the axial direction of the blanket cylinder 1 have both ends rotatably and detachably attached to a support portion of a device frame (not shown). A pair of guide rollers 4 and 5, which are rotatably supported at both ends by bearings of an apparatus frame, are provided on a peripheral surface of the blanket cylinder 1 via a cleaning cloth 6. It is pressed.

In a separate step, a band-shaped cleaning cloth 6 made of non-woven fabric or the like is fully wound, and from the rewinding shaft 2 mounted on the apparatus frame, the wound cleaning cloth 6 is rewound to the guide roller 4. The cleaning cloth 6
Are guided to the winding shaft 3 via the guide roller 5.
At first, 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 intermittently cleans the cleaning cloth 6 guided from the guide roller 5 as shown in the figure. It is configured to take up.

Above the running path of the cleaning cloth 6 from the guide roller 5 to the winding shaft 3, a brush roller 7 consisting of a hollow central shaft and a large number of bristles planted on its peripheral surface has a brush tip. The brush roller 7 is rotatably supported on the peripheral surface of the blanket cylinder 1 such that the circumferential direction of the brush roller 7 is opposite to that of the blanket cylinder 1 as indicated by an arrow in the figure. It is rotationally driven in the same direction as the body 1. In this way, the brush roller 7 is configured to scrape foreign matters such as ink residue and paper dust adhered to the peripheral surface of the blanket cylinder 1.

Reference numeral 8 denotes a nozzle pipe which is connected to a solution container (not shown) by a pipe or the like, and a plurality of injection holes whose injection directions are directed obliquely downward are formed below the nozzle pipe. A reflecting plate 9 having substantially the same length as this is fixed to the nozzle tube 8. When a pump or the like (not shown) is rotated in this way, the solution 10 is ejected from the ejection hole, and the ejected solution 10 is reflected and diverted by being brought into contact with the reflecting plate 9 so as to be deflected. The brush roller 7 is configured to be uniformly jetted in each direction.

Further, below the brush roller 7, a scraping member 11 supported in a fixed state is provided so that a bent piece is engaged in the flocking of the rotating brush roller 7, and the flocking is separated. It is configured such that foreign substances and waste liquid that have adhered to the flocking and have been rotated fall on the running cleaning cloth 6. In addition, 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 apparatus configured as described above will be described. After the cleaning cloth 6 is rewound from the rewind shaft 2 and pressed against the peripheral surface of the blanket cylinder 1 by the guide rollers 4 and 5, the winding shaft 3 is intermittently rotated to wind the cleaning cloth 6 around it. When the blanket cylinder 1 and the brush roller 7 are rotated in directions in which the contacting peripheral surfaces are opposite to each other, as indicated by arrows in the figure, foreign matter adhering to the peripheral surface of the blanket cylinder 1 , 5 are wiped off by a cleaning cloth 6 and carried away, and are also wiped off by a 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 and diverged by contacting the reflecting plate 9, and as a result, the solution 10 Since the solution is uniformly sprayed toward each part, the solution 10 can be evenly supplied to the peripheral surface of the blanket cylinder 1, and the scraped foreign matter is surely dissolved and carried around by flocking of the brush roller 7 together with the waste liquid. Is done.
A scraping member 1 is provided below the brush roller 7.
1 is provided with a bent piece engaged in the flocking, and the flocking is separated from the flocking, so that foreign substances and waste liquid adhered to the flocking and carried around are removed from the hole 1 of the scraping member 11.
After dropping onto the running cleaning cloth 6 from 1a or the tip, the cleaning cloth 6 is wound up while impregnated with foreign substances, waste liquid and the like. That is, the flocking of the brush roller 7 is scraped off.
Since it is separated by 1, the removal of foreign matter and waste liquid is promoted.

When such cleaning is repeated and the cleaning cloth 6 on the rewinding shaft 2 runs out, the empty rewinding shaft 2 and the rewinding shaft on which the cleaning cloth 6 is fully wound in another step are separated. In addition to the replacement, the take-up shaft 3 around which the contaminated cleaning cloth 6 is wound is removed, the used cleaning cloth 6 is discarded, the empty take-up shaft 3 is mounted on the apparatus, and then the new cleaning cloth 6 is rewound. Pull out from shaft 2 and wind.

In this embodiment, the present invention is applied to a blanket cylinder as a printing cylinder. However, the present invention is similarly applied to a printing cylinder other than the blanket cylinder, such as an impression cylinder, a transfer cylinder, and a discharge cylinder. The same effect can be obtained with a roller such as a landing roller or a swing roller.

[0019]

As is apparent from the above description, according to the present invention, in a printing cylinder / roller cleaning apparatus for a printing press, a cleaning cloth is attached to the peripheral surface of a rotating printing cylinder or a roller and then runs above the cleaning cloth. A brush roller that is rotatably driven in contact with the peripheral surface of the printing cylinder and the roller, and a nozzle provided with an ejection hole for injecting a solvent into the brush roller is provided. Foreign substances are not only wiped off with a cleaning cloth, but also scraped off with a brush roller and dissolved by a solvent sprayed from the injection holes of the nozzle tube, and then dropped onto the cleaning cloth to be collected. It is not necessary to provide a receiving tray or a collecting device connected thereto, and the structure is simplified, and the work of treating the waste liquid is eliminated, so that the labor is reduced and the operation rate of the machine and the cleaning effect are improved.
In addition, by providing a reflecting plate that abuts the solvent sprayed from the injection hole and diffuses so as to be deflected in the direction of the brush roller, the solvent sprayed from the injection hole is diffused by the reflection plate and the brush roller is rotated. Since it is sprayed uniformly to each part, cleaning unevenness does not occur, the cleaning effect is improved, and a special nozzle is installed to eliminate cleaning unevenness as in the past, or a device for spraying the solvent in a mist state Since it is not necessary to provide a work piece, the number of parts and the number of assembling steps are reduced, and the mist-like solvent is not scattered to the surroundings, so that the working environment is improved.

[Brief description of the drawings]

FIG. 1 is a side view of a printing cylinder and roller cleaning device of a printing press.

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

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 blanket cylinder 2 rewind shaft 3 take-up shaft 6 cleaning cloth 7 brush roller 8 nozzle tube 9 reflector 10 solvent

Claims (1)

(57) [Scope of request for utility model registration] 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 which travels after being attached to 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 so as to be deflected toward the brush roller. A printing cylinder and roller cleaning device for a printing press, characterized by the following: