JPH0642181U - Printing cylinder / roller cleaning device for printing machines - Google Patents

Abstract

(57) [Summary] [Purpose] The simple structure reduces the number of times to replace the scraping member and shortens the preparation time. [Structure] A brush roller 7 is provided so as to rotate in contact with the peripheral surface of the blanket cylinder 1. A scraping member 11 having a polygonal cross-section was provided, and its corners were engaged with the bristles of the brush roller 7 to scrape the bristles and drop the waste liquid and the like. Disk 1 for rotating scraping member 11 to fix it at a predetermined position so that one of its corners can be selectively engaged with the hair transplant.
An operation member composed of 5, etc. was provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

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

[0002]

[Prior art]

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

As this type of printing cylinder / roller cleaning device, for example, a device disclosed in Japanese Patent Laid-Open No. 63-296945 is known as a device for cleaning a blanket cylinder. This device is equipped with a brush roller that contacts the peripheral surface of the blanket cylinder, and a cleaning roller that is located above the cleaning roller and contacts the peripheral surface of the blanket cylinder. Is provided with a saucer for storing. A scraping member is inserted into the bristles of the brush roller, and a cleaning liquid drop lower pipe is provided above the cleaning roller.

With such a configuration, when the brush roller and the cleaning roller are rotated while the blanket cylinder is rotated, the rubber is rotated by the rotation of both rollers and the cleaning liquid dropped from the cleaning liquid drop lower pipe. Foreign substances adhering to the peripheral surface of the body are removed, and the waste liquid after cleaning is scraped off into the tray together with the scraping member.

As described above, since the printing cylinder / roller cleaning device scrapes off the dirt on the peripheral surface of the rubber cylinder by the brush roller, dirt is easily attached to the brush roller, and the dirt is left as it is. If this is done, the peripheral surface of the blanket cylinder becomes dirty, and a sufficient cleaning effect cannot be expected. Therefore, the scraping member as described above is provided to scrape off the dirt on the brush roller.

[0006]

[Problems to be solved by the device]

 However, since the scraping member in the above-mentioned conventional device is formed in a plate shape and the same portion is always engaged in the bristling of the brush roller, it is worn out frequently and must be replaced frequently, so the cost of parts is low. It is bulky and requires a lot of labor and time for replacement, resulting in a decrease in machine operation rate.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a printing cylinder / roller cleaning device for a printing machine, which has a simple structure and can reduce the number of times to replace the scraping member. Has an aim.

[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 press, a brush roller that is rotationally driven in contact with the peripheral surface of the rotating printing cylinder / roller and a polygonal cross section. And a scraping member rotatably supported so that any one of the corners is selectively engaged with the bristles of the brush roller, and the scraping member is rotated to be fixed at a predetermined position. And an operating member for controlling.

[0009]

[Action]

 For example, a blanket cylinder as a printing cylinder and a brush roller that is in contact with the cylinder are rotated and are supplied to the peripheral surface of the roller. At this time, a brush roller attached to the peripheral surface of the printing cylinder and the roller is rotating above the running cleaning cloth, the solvent is sprayed from the nozzle to the brush roller, and the brush roller flocking is performed. Since the foreign matter scraped off by the brush roller is dissolved by the solvent, the foreign matter scraped off by the brush roller is scraped off with the waste liquid on the cleaning cloth by the scraping member, and the cleaning cloth is removed. It will be wound up with this attached.

[0010]

【Example】

 1 to 3 show an embodiment of a printing cylinder / roller cleaning device of a printing press according to the present invention, FIG. 1 is a side view of the printing cylinder / roller cleaning device, and FIG. 2 is a part of the vicinity of a scraping member. FIG. 3 is a front view of the broken roller, and FIG. 3 is a side view of the brush roller and the scraping member.

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 rotate at both ends on a support portion of an apparatus frame (not shown). A pair of guide rollers 4 and 5, which are rotatably and detachably supported, and whose both ends are rotatably supported by bearings of the mounting frame, are provided on the peripheral surface of the blanket cylinder 1 for cleaning. It is pressed against the cloth 6.

In a separate step, a belt-shaped cleaning cloth 6 made of a 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 illustrated. It is configured to be wound up.

Above the running path of the cleaning cloth 6 from the guide roller 5 toward the take-up shaft 3, a brush roller 7 having a hollow central shaft and a large number of bristles planted on the peripheral surface thereof 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 brush roller 7 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 scrapes off foreign matter such as ink residue and paper dust attached to the peripheral surface of the blanket cylinder 1.

A reference numeral 8 indicates a nozzle pipe connected to a solution container (not shown) by a pipe or the like, and a large number of injection holes are formed in the lower portion of the nozzle pipe. A reflector 9 having a length substantially the same as that of this is fixed. By doing so, when a pump or the like (not shown) is rotated, the solution 10 is ejected from the ejection hole, the solution is reflected by the reflection plate and diffused, and then ejected toward the brush roller 7. Has been done.

Then, the scraping member attached to the brush roller 7 and its operating device will be described. Below the brush roller 7, a scraping member 11 having a square cross section is rotatably supported by the shaft holes of the frame 12 at both end shafts 11a and 11b having a circular cross section. The movement in the axial direction is restricted by 13 and the snap ring 14.

A disk 15 formed in a disk shape and constituting an operation member is fixed by a key 16 to a protruding portion of the one end shaft 11 a of the scraping member 11 from the frame 12, and the outer circumference of the disk 15 is fixed. A stepped pin hole 15a is formed at one place of the portion.

On the other hand, on the plane of the frame 12, four pin holes 12a corresponding to the pin holes 15a in the radial direction are formed at positions that divide the outer peripheral portion of the disk 15 into four equal parts in the circumferential direction. A pin 17 with a knob 17a, which constitutes an operating member together with the disk 15, is inserted into the pin hole 15a.

A compression coil spring 18 for urging the pin 17 toward the frame is interposed between the step portion of the pin 17 and the step portion of the pin hole 15a. By pulling the pin 17 against the pin hole, one of the pin holes 12a is selected to correspond to the pin hole 15a, and the pin 17 is inserted into any of the pin holes 12a by releasing the hand. The corners of the scrapers are engaged with the bristles of the brush roller 7 so that the scraping member 11 is fixed at a predetermined position.

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 attached to the peripheral surface of the blanket cylinder 1 is guided by the guide rollers 4, 4. Cleaning between 5 It is wiped off with a cloth 6 and carried away, and it is scraped off with a brush roller 7.

At this time, the solution 10 is ejected from the ejection hole of the nozzle tube 8, and the solution 10 is reflected by the reflection plate 9 and diffused, and then evenly ejected toward the brush roller 7. While being uniformly supplied to the peripheral surface of the body 1, the scraped foreign matter is dissolved and carried around by the bristles of the brush roller 7 together with the waste liquid.

A scraping member 11 having a square cross section is provided below the brush roller 7 with square corners of the bristles inserted into the bristles, and the bristles are scraped off at the corners. The foreign matter and waste liquid carried around are scraped off along the sides of the square and dropped onto the cleaning cloth 6 running from the corners of the member 11, and then the cleaning cloth 6 is impregnated with foreign matter and waste liquid. It is wound up. That is, since the bristles of the brush roller 7 are scraped off and scraped off by the 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 replaced. At the same time as replacing, remove the winding shaft 3 on which the contaminated cleaning cloth 6 is wound, discard the used cleaning cloth 6, mount the empty winding shaft 3 on the device, and then rewind the new cleaning cloth 6. Pull out from the shaft 2 and wind.

When the corners of the scraping member 11 are worn out and become functionally unusable, when the knob 17 a is gripped and the pin 17 is pulled against the elastic force of the compression coil spring 18, Since the pin 17 is pulled out from the pin hole 12a of the frame 12 and the disc 15 can be rotated, when the disc 15 is gripped by the knob 17a and rotated, for example, by 90 °, the scraping member 11 is worn. Since the non-corner portion is engaged with the bristles of the brush roller 7, it is possible to perform the work equivalent to the replacement of the scraping member 11 with one simple behavior.

FIG. 4 is a side view of a printing cylinder / roller cleaning device showing another embodiment of the present invention corresponding to FIG. 1, and the members having the same configurations as those in the above embodiment are designated by the same reference numerals. And omit the explanation. In the present embodiment, the cleaning cloth 22 rewound from the rewinding shaft 21 is deflected by the guide roller 23 and wound up on the winding shaft 24. The guide roller 23 is removed from the peripheral surface of the blanket cylinder 1. It is separated. The bristles of the brush roller 7 are fitted with a scraping member 11 having a square cross section similar to that of the above-described embodiment, and the scraping member 11 is composed of a disk 15 or the like for rotating the scraping member 11. The same operation member as that of the embodiment is attached.

With this configuration, the foreign matter attached to the peripheral surface of the blanket cylinder 1 is scraped off by the brush roller 7, and the scraped foreign matter is dissolved and carried around by the brush roller 7 together with the waste liquid. However, since the bristles of the brush roller 7 are scraped off by the scraping member 11, the foreign matter and waste liquid intervening in the bristles are scattered on the cleaning cloth 22 which is intermittently or continuously running below the brush roller 7. The foreign matter and waste liquid that have fallen onto the cleaning cloth 22 are impregnated into the cleaning cloth 22 and wound up. The operation of the scraping member 11 and the operating member composed of the disk 15 for rotating the scraping member 11 when it is worn is the same as that of the above embodiment.

In this embodiment, an operation member for rotating the scraping member 11 and fixing it at a predetermined position is slidably inserted into the disk 15 and its pin hole 15a and attached by a compression coil spring 18. Although an example in which the pin 17 is biased is shown, the present invention is not limited to this, and a one-way clutch or ratchet may be provided between the disc and the scraping member to connect and disconnect the rotation transmission. Alternatively, a worm, a gear, a worm, an actuator, a screw, or the like may be used as the rotation transmission means between the disc and the scraping member.

Further, in the present embodiment, the example in which the scraping member 11 has a square cross-sectional shape is shown, but any polygonal shape may be used.

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 receiving roller and the swing roller.

[0029]

[Effect of device]

 As is apparent from the above description, according to the present invention, in the printing cylinder / roller cleaning device of the printing machine, in the printing cylinder / roller cleaning device of the printing machine, the peripheral surface of the rotating printing cylinder / roller is contacted. A brush roller that is driven to rotate, a scraping member that has a polygonal cross section, and is rotatably supported so that any one of the corners can be selectively engaged with the bristles of the brush roller, and the scraping member. If the scraping member wears and its function deteriorates due to the provision of an operating member that rotates and fixes the scraping member at a predetermined position, rotate the operating member with the scraping member attached. With just the simple operation, the same result as replacing the scraping member can be obtained, so the preparation time is greatly shortened, the operating rate of the printing press is improved, and the labor burden on the operator is reduced. It

[Brief description of drawings]

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

FIG. 2 is a partially cutaway front view of the vicinity of a scraping member.

FIG. 3 is a side view of a brush roller and a scraping member.

FIG. 4 is a side view of a printing cylinder / roller cleaning device according to another embodiment of the present invention.

[Explanation of symbols] 1 blanket cylinder 2 rewinding shaft 3 winding shaft 6 cleaning cloth 7 brush roller 11 scraping member 12a pin hole 15 disk 15a pin hole 17 pin 17a knob 18 compression coil spring 21 rewinding shaft 22 cleaning cloth 23 Guide roller 24 Winding shaft

Claims (1)

[Scope of utility model registration request] 1. A brush roller which is rotationally driven so as to be in contact with a peripheral surface of a rotating printing cylinder / roller, and any one of corners formed in a polygonal cross section is selectively engaged with the bristles of the brush roller. A printing cylinder / roller cleaning device for a printing press, comprising: a scraping member rotatably supported as described above; and an operating member that rotates the scraping member to fix the scraping member at a predetermined position.