JPH06297697A - Cleaning device for outer peripheral surface of cylindrical body - Google Patents

Abstract

PURPOSE:To remove the deposit on the surface of a cylindrical body such as a cylinder or a roller covered with an elastic material without damaging the surface thereof. CONSTITUTION:A wiping device 3 equipped with a wiping roller 31 having a mirror surface and the doctor 32 abutting on the outer peripheral surface of the wiping roller is arranged on the downstream side of a solvent applicator 2 with respect to the rotary direction of a blanket cylinder 1 being a cylindrical body covered with an elastic material made of rubber or plastic. When the solvent applicator is operated, a solvent is supplied to the surface of a blanket 11 from an ink fountain roller through a form roller to soften ink. When the wiping device is operated, the wiping roller is rotated in contact with the outer peripheral surface of the blanket cylinder with relative speed difference and waste ink 40 is transferred to the wiping roller to wash the outer peripheral surface of the blanket cylinder. The waste ink transferred to the wiping roller is scraped off by the doctor 32 to to stored in a pan 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical body whose surface is covered with an elastic material such as rubber or plastic, particularly a blanket cylinder of a printing press, an impression cylinder and a rubber roller, other papermaking machines and various papers and films. The present invention relates to an automatic cleaning device that removes deposits generated on the surfaces of cylinders and rollers used in a processing machine.

[0002]

2. Description of the Related Art In a machine equipped with a cylindrical body, in the conventional cleaning work of the cylindrical body, an operator has soaked a cleaning liquid in a cleaning cloth such as a web and wiped it by hand. Has been developed and put into practical use. A typical automatic cleaning device of this type is of the following type. For a type in which a rotating brush or a comb-shaped brush is brought into contact with the surface to be cleaned and the dirt is scraped off from the object to be cleaned, a cleaning liquid is used, for example, JP-A-63-296945, and use the cleaning liquid. First, as a method for removing dirt with a dry brush, for example, one proposed in Japanese Patent Laid-Open No. 2-1419 is known.

Further, a cleaning liquid is automatically supplied to a cleaning cloth such as a non-woven fabric, and the cleaning cloth is repeatedly pressed and released to and from the surface to be cleaned with a pressing pad, while the cleaning cloth is stepped between the cleaning cloth and the surface to be cleaned. As a method for removing dirt, for example, Japanese Patent Laid-Open No. 51-
The one proposed in No. 56306 is known. Further, a cleaning liquid is supplied to the surface to be cleaned to soften the dirt on the surface to be cleaned, and a doctor blade is abutted on the surface to be cleaned to scrape off the softened dirt.
The one proposed in No. 583 is known.

[0004]

By the way, in the conventional cleaning device for a cylindrical body, the dirt on the surface is removed by rubbing the surface of the object to be cleaned with a brush, a cleaning cloth, a metal doctor or the like. Is. Therefore, when the surface strength of the object to be cleaned is weak, that is, when the surface hardness of the object to be cleaned is lower than that of the cleaning cloth that comes into contact with the object to be cleaned, scratches or scratches may occur on the object to be cleaned. There was a problem such as making it impossible. An object of the present invention is to provide a cleaning device capable of removing deposits on the surface of a cylindrical body such as a cylinder or roller whose surface is covered with an elastic material without damaging the surface.

[0005]

In order to achieve the above-mentioned object, the invention described in claim 1 eliminates deposits on the outer peripheral surface of a cylinder or a cylinder of a roller whose surface is covered with an elastic material. In a cleaning device for removing, a solvent applicator that supplies a solvent to the outer peripheral surface of the cylindrical body and a solvent applicator that is in contact with the outer peripheral surface of the cylindrical body and is rotated with a relative speed difference in the peripheral speed of the cylindrical body. A wiping roller having a surface harder than the outer peripheral surface of the cylindrical body and having a mirror-finished surface,
And a wiping roller cleaning unit that removes adhered substances transferred from the cylindrical body to the wiping roller.

According to a second aspect of the present invention, in the above invention, the solvent applicator is arranged on the upstream side of the wiping roller with respect to the rotation direction of the cylindrical body. According to a third aspect of the present invention, there is provided a cleaning device for removing deposits on the outer peripheral surface of a cylinder, roller, or the like, the surface of which is covered with an elastic material. A wiping roller that is rotated and has a harder surface than the outer peripheral surface of the cylindrical body, the surface of which is mirror-finished, and a solvent is supplied to the wiping roller, and the solvent is supplied to the cylindrical body through the wiping roller. It is composed of a solvent applicator and a wiping roller cleaning means for removing deposits transferred from the cylindrical body to the wiping roller.

According to a fourth aspect of the present invention, in the third aspect of the invention, the solvent applicator includes a solvent calling roller for supplying the solvent to the wiping roller and a solvent pan for storing the solvent applied to the solvent calling roller. The solvent calling roller is provided so as to come in contact with and separate from the wiping roller, and the calling roller is brought into contact with the wiping roller at the time of supplying the solvent, and the solvent is applied from the calling roller to the wiping roller. The solvent is supplied to the cylindrical body through the above.

Further, another invention is characterized in that, in the invention described in claim 1, 3 or 4, the invention is provided with the following configuration. That is, (1) the wiping roller cleaning means is a doctor or a cleaning cloth, a cloth supply means for supplying the cleaning cloth, a cloth winding means for winding the cleaning cloth, and a pressure contact means for pressing the cleaning cloth against the wiping roller. In any configuration of the wiping unit with. (2) The wiping roller is driven to rotate intermittently.

[0009]

According to the first aspect of the present invention, at the time of cleaning, the cleaning device is moved from the standby position to the operating position, the solvent applicator is operated, and the solvent is supplied to the surface of the cylindrical body so that the outer peripheral surface of the cylindrical body is A solvent is made to act on the deposits. Along with that
The wiping device is activated to press the wiping roller against the cylindrical body. Here, since the wiping roller is rotationally driven with a relative speed difference with respect to the peripheral speed of the cylindrical body, the deposit on the outer peripheral surface of the cylindrical body whose state has been changed by the solvent has a clean surface. Transferred to the roller, the outer peripheral surface of the cylindrical body is cleaned. Then, the adhering matter transferred to the wiping roller is removed by the wiping roller cleaning means, and the surface of the wiping roller is cleaned. Since the surface of the wiping roller is mirror-finished, it does not damage the surface of the cylindrical body covered with an elastic material such as rubber or plastic.

According to the third aspect of the invention, the solvent is directly applied to the wiping roller by, for example, jetting, and the solvent is supplied to the cylindrical body via the wiping roller. At this time, the wiping roller cleaning means is in a non-operating state. The supply of the solvent is stopped when the solvent is sufficiently supplied to the outer peripheral surface of the cylindrical body and the adhering matter is changed to an appropriate state. Then, the wiping roller is rotated in the reverse direction or slightly faster in the same forward direction as when the solvent is supplied, and at the same time, the wiping roller cleaning means is operated. Then, the adhered matter whose state on the outer peripheral surface of the cylindrical body is changed is transferred to the wiping roller, and then removed by the wiping roller cleaning means.

According to the fourth aspect of the present invention, the calling roller is brought into contact with the wiping roller to rotate the wiping roller to supply the solvent to the wiping roller, and the wiping roller is pressed against the outer peripheral surface of the cylindrical body in the forward direction. Also, the solvent is supplied to the surface of the cylindrical body by rotating at the same peripheral speed. At this time, the wiping roller cleaning means is in a non-cleaning state with respect to the wiping roller. After the solvent is sufficiently supplied, the calling roller is separated from the wiping roller to stop the solvent supply. After that, the wiping action described in claim 3 is the same.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment is applied to a blanket cylinder of a printing machine in which a blanket made of an elastic material is wound as a cylinder whose surface is covered with an elastic material. (Embodiment 1) FIG. 1 shows a schematic configuration of embodiment 1 in which the cleaning apparatus of the present invention is applied to cleaning a blanket cylinder of a printing machine.
The blanket cylinder cleaning device is a solvent applicator 2 arranged on the upstream side with respect to the rotation direction (arrow a) of the blanket cylinder 1 having the blanket 11, and a wiping device arranged on the downstream side of the solvent applicator 2. It consists of three. The solvent applicator 2 is arranged in a state in which a part of the calling roller 23 is attached to a solvent pan 22 for storing the solvent 21, and the calling roller 23 and the blanket cylinder 1 are arranged.
A wearing roller 24 is provided between the and. At the time of supplying the solvent, the application roller 24, which is rotated at the same peripheral speed as the blanket cylinder 1, is brought into contact with the outer peripheral surface of the blanket cylinder 1 to rotate, so that the blanking cylinder 1 moves from the calling roller 23.
The solvent 21 is transferred to the blanket cylinder 1, and the solvent 21 is supplied to the outer peripheral surface of the blanket cylinder 1 to soften the ink on the surface.

The wiping device 3 includes a wiping roller 31 which rotates in contact with the outer peripheral surface of the blanket cylinder 1, and the doctor 3 which contacts the outer peripheral surface of the wiping roller 31.
2 and an ink waste liquid pan 33 for containing the dirt scraped off by the doctor 32. The wiping roller 31 rotates in the opposite direction to the blanket cylinder. The outer peripheral surface of the wiping roller 31 is made of a material having a hardness higher than that of the object to be cleaned such as steel, and the surface thereof is mirror-finished.

The application roller 24 of the solvent applicator and the wiping roller 31 of the wiping device are arranged on the blanket cylinder 1 in order to avoid interference with the cap 12 for mounting the blanket. A mechanism (not shown) is provided for separating at a position and contacting again after passing through the gap. However, it goes without saying that the cleaning apparatus of the present invention can be used for a cylindrical body having no gap, which is different from the blanket cylinder. In that case, the gap retracting mechanism of this embodiment is not necessary.

Next, the operation of the first embodiment will be described. The gap is shown only in FIG. 1 and omitted in the other drawings. During printing, the application roller 24 of the solvent applicator 2 and the wiping roller 31 of the wiping device 3 are separated from the blanket cylinder 1 as shown in FIG. 1a. At the time of cleaning, as shown in FIG. 1b, the application roller 24 of the solvent applicator and the wiping roller 31 of the wiping device are pressed against the outer peripheral surface of the blanket cylinder. At this time, the application roller 24 is rotated in the direction of the arrow b (forward direction), the solvent delivered from the calling roller 23 rotating in contact with the application roller 24 in the direction of the arrow b is supplied to the blanket surface, and the application to the blanket. The ink is softened by the solvent.

When the wiping device 3 is actuated, the wiping roller 31 is separated from the blanket cylinder 1 by an arrow a in FIG. 1b.
Rotate in the opposite direction indicated by and press against the blanket surface. The softened ink (hereinafter referred to as ink waste liquid) 40 is transferred to the wiping roller 31, and the outer peripheral surface of the blanket cylinder 1 is washed. On the other hand, the ink waste liquid 40 transferred to the wiping roller 31 is scraped off by the doctor 32,
It is stored in the ink waste liquid pan 33. In this cleaning operation, since the sliding rotation in the opposite direction is performed between the wiping roller 31 and the contact surface of the blanket 11, the ink waste liquid 40 on the blanket cylinder surface is scraped off by the clean surface of the wiping roller 31. The effect is produced, and the transfer of the ink waste liquid 40 to the wiping roller 31 is reliably performed. Further, the mirror-finished surface of the wiping roller 31 is pressed against the surface of the blanket 11 made of an elastic material, so that the surface of the blanket is not damaged.

(Embodiment 2) FIG. 2 shows a schematic construction of Embodiment 2 in which the cleaning apparatus of the present invention is applied to cleaning a blanket cylinder of a printing machine. The present embodiment is characterized by using a solvent applicator of the type that sprays a solvent. The constituent members having the same functions as the constituent members shown in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted as appropriate. The solvent applicator includes a plurality of solvent injection nozzles 25 connected to a solvent supply mechanism (not shown), and the solvent injection nozzles 25 are arranged along the axial direction of the blanket cylinder 1.
At the time of cleaning, the solvent 21 is supplied from the solvent injection nozzle 25 to the outer peripheral surface of the blanket cylinder 1. Then, the wiping device 3 is operated, the wiping roller 31 is pressed against the outer peripheral surface of the blanket cylinder 1 as shown in the drawing, and the ink waste liquid 40 is removed by the wiping roller 31.

(Embodiment 3) FIG. 3 shows a schematic construction of Embodiment 3 in which the cleaning apparatus of the present invention is applied to cleaning a blanket cylinder of a printing machine. The present embodiment is characterized in that the wiping roller is rotationally driven in the direction opposite to the rotational direction of the blanket cylinder. The constituent members having the same functions as the constituent members shown in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted as appropriate. The wiping device is a wiping roller 31.
Is driven to rotate in a direction opposite to the rotation direction of the blanket cylinder 1 at a peripheral speed slightly higher than the peripheral speed of the blanket cylinder 1. When the wiping roller 31 is rotated in the direction of arrow a in the figure at a higher peripheral speed than the blanket cylinder 1 during cleaning, the ink waste liquid is transferred to the lower surface of the wiping roller 31 as shown by the relative speed difference between the wiping roller 31 and the blanket cylinder 1. Then, it is scraped off by the doctor 32 and collected in the ink waste liquid pan 33.

(Embodiment 4) FIG. 4 shows a schematic construction of Embodiment 4 in which the cleaning apparatus of the present invention is applied to cleaning a blanket cylinder of a printing machine. The present embodiment is characterized in that the solvent applicator and the wiping device are integrated. The cleaning device is movably provided by a mechanism (not shown) that presses or separates from the blanket cylinder 1, and a wiping roller 31 that supplies a solvent to the surface of the blanket and removes an ink waste liquid during the pressing. It includes a wiping roller 31, a solvent supply unit 2 for applying a solvent to the blanket surface via the wiping roller 31, and a wiping unit 3 including a doctor 32 for scraping off the ink waste liquid 40 transferred from the blanket surface to the wiping roller 31. ing.

The wiping roller 31 is reversibly rotated by a drive mechanism (not shown). The wiping roller 31 is rotated in the opposite direction and at the same peripheral speed as the blanket cylinder 1 as shown in FIG. 4a when the solvent is supplied, and in the reverse direction or the forward direction shown in FIG. 4b when the wiping roller 31 is rotated. . Further, the peripheral speed of the wiping roller 31 at the time of wiping is selected as an optimum peripheral speed for transferring the ink waste liquid 40 to the wiping roller 31, but especially in the forward direction, the peripheral speed is slightly higher than the peripheral speed of the blanket cylinder 1. Is set to.

The solvent supply unit 2 includes a wiping roller 31.
And a calling roller 23 provided so as to come in contact with and separate from the wiping roller 31, and a solvent pan 22 containing a solvent 21 to be transferred from the calling roller 23 to the wiping roller 31. The roller 23 is brought into contact with the wiping roller 31 and rotated to rotate the solvent 21
To the wiping roller 31, and the wiping roller 31 supplies the blanket surface. Wiping part 3
Is the wiping roller 31 and the wiping roller 3
1. A doctor 32 that can be attached to and detached from the wiping roller 31 and an ink waste liquid 4 scraped by the doctor 32 from the wiping roller 31.
It is composed of an ink waste liquid pan 33 that stores 0,
At the time of cleaning, the doctor is brought into contact with the wiping roller to scrape off the ink waste liquid on the wiping roller.

Next, the operation of the fourth embodiment will be described. At the time of cleaning, as shown in FIG. 4a, the wiping roller is rotationally driven in the direction opposite to the rotation direction of the blanket cylinder, and the calling roller is brought into contact with the wiping roller to rotate so that the solvent is applied to the wiping roller and the wiping roller is brought into contact with the blanket surface. Press against. At this time, the doctor is kept in a separated state. When the solvent is supplied to the blanket surface and the ink is sufficiently softened, the take-out roller is separated from the wiping roller as shown in FIG. 4b to stop the solvent supply to the blanket surface. At the same time, the wiping roller is reversed and the doctor abuts. Then, after the ink waste liquid on the blanket surface is transferred to the wiping roller,
It is scraped off by a doctor and stored in a pan for waste ink.

(Embodiment 5) FIG. 5 shows a schematic construction of embodiment 5 in which the cleaning apparatus of the present invention is applied to cleaning a blanket cylinder of a printing machine. The present example is characterized in that the solvent applicator used in Example 4 is replaced with a solvent applicator of the type that ejects a solvent. Figure 5
As shown in a, the wiping roller 31 is rotationally driven in a direction opposite to the rotation direction of the blanket cylinder 1, the solvent 21 is jetted from the solvent jet nozzle 25 and applied to the wiping roller 31, and the wiping roller 31 is pressed against the blanket surface. To do. At this time, the doctor 32 is kept in a separated state. When the solvent 21 is supplied to the surface of the blanket and the ink is sufficiently softened, the supply of the solvent is stopped as shown in FIG. 5B, and at the same time, the wiping roller 31 is reversed to bring the doctor 32 into contact. Then, after the ink waste liquid on the blanket surface is transferred to the wiping roller 31,
Ink waste liquid pan 3 scraped off by doctor 32
Stored in 3. Although the wiping roller is rotated in the opposite direction when the ink waste liquid is removed from the blanket surface in the fourth and fifth embodiments, the configuration shown in FIG. 3 may be used. That is, the wiping roller is rotated in the forward direction by the driving means, and speed control is performed to slightly increase the peripheral speed during wiping with respect to the peripheral speed during solvent supply.

(Sixth Embodiment) FIG. 6 shows a schematic structure of a sixth embodiment in which the cleaning apparatus of the present invention is applied to cleaning a blanket cylinder of a printing machine. The present embodiment is characterized by using a wiping unit of a type in which the ink waste liquid transferred to the wiping roller is wiped with a cleaning cloth instead of a doctor for scraping the ink waste liquid. The constituent members having the same functions as the constituent members shown in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted as appropriate. The wiping unit includes a cleaning cloth 34, cloth supply means 35 for supplying the cleaning cloth, and cloth winding means 3 for winding the cleaning cloth.
6 and a pressing means 37 such as a pad for pressing the cleaning cloth against the wiping roller 31. During cleaning, the cleaning cloth is pressed against the wiping roller to wipe off the ink waste liquid on the wiping roller for cleaning. At the time of cleaning, the cleaning cloth is separated from the wiping roller and retracted. This wiping unit is also applicable to a type in which a solvent is jetted and supplied, a type in which solvent supply and wiping are integrated, and the like.

In the present embodiment, the ink on the blanket surface is used as the deposit on the outer peripheral surface of the cylinder, but the deposit is suitable for the purpose of use on the outer peripheral surface of the cylinder. Not all things are covered. Further, "softening" means that the adhered substance is dissolved in the solvent or released from the surface of the cylindrical body so that the adhered substance can be transferred to the wiping roller.

[0026]

As described above, according to the present invention, the surface of the wiping roller is made of a material having a hardness higher than that of the surface of the cylinder to be cleaned, and the surface is mirror-finished. The surface of the cylindrical body covered with an elastic material such as rubber or plastic can be cleaned without causing scratches or dents.

[Brief description of drawings]

FIG. 1 shows a schematic configuration applied to a blanket cylinder cleaning device of a printing machine as an embodiment of a cleaning device for an outer peripheral surface of a cylindrical body of the present invention. FIG. It is a schematic diagram at the time of wiping.

[Fig. 2] Using a solvent applicator for supplying a solvent by solvent injection

FIG. 3 is a schematic diagram showing a schematic configuration of an embodiment of a cleaning device using a wiping device in which a wiping roller is rotationally driven in a direction opposite to a rotational direction of a cylindrical body.

FIG. 4 is a schematic diagram showing a schematic configuration of an embodiment in which a cleaning device in which a solvent applicator and a wiping device are integrated is applied to cleaning a blanket cylinder of a printing machine.

FIG. 5 is a schematic diagram showing a schematic configuration of an embodiment in which a cleaning device in which a solvent applicator that supplies a solvent by solvent injection and a wiping device are integrated is applied to cleaning a blanket cylinder of a printing machine.

FIG. 6 is a schematic diagram showing a schematic configuration of an embodiment of a cleaning apparatus using a cleaning cloth supply unit of a type that wipes with a cleaning cloth instead of a doctor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Blanket cylinder, 2 ... Solvent applicator, 3 ... Wiping device, 11 ... Blanket, 23 ... Calling roller, 24 ... Wearing roller, 31 ... Wiping roller, 32
... Doctor, 34 ... Cleaning cloth, 35 ... Cloth supply means, 36 ...
Cloth winding means, 37 ... pressure welding means

Claims (7)

[Claims] 1. A cleaning device for removing deposits on the outer peripheral surface of a cylindrical body such as a cylinder or roller whose surface is covered with an elastic material, comprising a solvent applicator for supplying a solvent to the outer peripheral surface of the cylindrical body. , Is in contact with the outer peripheral surface of the cylindrical body and is rotated with a relative speed difference in the peripheral speed of the cylindrical body, and has a harder surface than the outer peripheral surface of the cylindrical body, and the surface is mirror-finished. A cleaning device comprising: a wiping roller; and a wiping roller cleaning means for removing deposits transferred from the cylindrical body to the wiping roller. 2. The cleaning apparatus according to claim 1, wherein the solvent applicator is arranged on the upstream side of the wiping roller with respect to the rotation direction of the cylindrical body. 3. A cleaning device for removing deposits on the outer peripheral surface of a cylindrical body such as a cylinder or roller whose surface is covered with an elastic material, in which the outer peripheral surface of the cylindrical body is contacted and rotated. A wiping roller having a surface harder than the outer peripheral surface of the cylindrical body, the surface of which is mirror-finished; and a solvent applicator for supplying a solvent to the wiping roller and supplying the solvent to the cylindrical body via the wiping roller, A cleaning device comprising: a wiping roller cleaning unit that removes adhered substances transferred from the cylindrical body to the wiping roller. 4. The solvent applicator is provided with a solvent calling roller for supplying the solvent to the wiping roller and a solvent pan for storing the solvent supplied to the solvent calling roller, and the solvent calling roller is provided so as to be able to come in contact with and separate from the wiping roller. 4. The solvent is supplied to the wiping roller when the solvent is supplied, the solvent is supplied from the calling roller to the wiping roller, and the solvent is supplied to the cylindrical body through the wiping roller. The cleaning device according to. 5. The cleaning device according to claim 1, wherein the wiping roller cleaning means is composed of a doctor. 6. The wiping roller cleaning means is a cleaning cloth,
It is configured by a wiping unit including a cloth supply means for supplying the cleaning cloth, a cloth winding means for winding the cleaning cloth, and a pressure contact means for pressing the cleaning cloth against a wiping roller. Item 5. The cleaning device according to item 1, 3 or 4. 7. The cleaning apparatus according to claim 1, 3 or 4, wherein the wiping roller is intermittently rotated.