WO2012121376A1

WO2012121376A1 - Roller cleaning device

Info

Publication number: WO2012121376A1
Application number: PCT/JP2012/056135
Authority: WO
Inventors: 瑛原; 克仁小高
Original assignee: 日本ボールドウィン株式会社
Priority date: 2011-03-10
Filing date: 2012-03-09
Publication date: 2012-09-13
Also published as: CN103402898A; CN103402898B; JPWO2012121376A1; KR20140007389A; KR101652344B1; JP5079171B2

Abstract

In order that the frictional resistance between cleaning cloth and the surface of a roller is reduced even if the cleaning cloth is in contact with the surface of the roller, a roller cleaning device (1) is formed by mounting a supply means (3), a winding means (4), and a pressing body (7) on a cleaning unit (2) capable of moving in the direction of the axis of the roller (6). The pressing body (7) is disposed between the supply means (3) and the winding means (4) and is pressed toward the surface of the roller (6) while being tilted in the direction in which the pressing body (7) moves away from a change on the surface of the roller. The cleaning cloth (5) is linearly pressed against the surface of the roller (6) so as to be in contact with the surface. The width of the cleaning cloth (5) is set to be less than the length of the roller (6).

Description

Roller cleaning device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for cleaning the surface of a roller used for processing or transporting a film or a printing medium in a film processing machine or a printing machine, and in particular, a roller cleaning device for cleaning the surface of a roller with a cleaning cloth. It is about.

Film processing machines and printing machines are equipped with a large number of rollers for processing or transporting films and print media. Since these rollers are in direct contact with the print media and film, they must always be kept clean. In particular, in a film processing machine, keeping the rollers clean is a condition for performing high-quality film processing. When foreign matter adheres to the surface of the roller, the foreign matter adheres to the film being transported or scratches the film. Further, in precise printing, it is necessary to keep a large number of rollers in contact with a printing medium such as printing paper, cloth, and film clean. In addition, the paper manufacturing equipment used in the paper industry and the cloth production equipment used in the textile industry also use a large number of rollers, and as with printing machines and film processing machines, they must be kept clean. .

In order to keep the roller surface clean, the operator must periodically interrupt the production operation of the printing machine, film processing machine, etc., and wipe the surface of the roller using a cleaning cloth. Moreover, depending on the degree of contamination, it is necessary for a plurality of workers to perform cleaning over time. In particular, when the number of rollers is large, cleaning takes time and the production efficiency decreases. Therefore, it is desired to use a roller cleaning device that can automatically, periodically or irregularly and frequently perform cleaning of a printing press or a film processing machine in an idle operation state or a production operation state.

Patent Document 1 discloses a roller cleaning device that can be used in a printing machine, a film processing machine, and the like. The roller cleaning device of Patent Literature 1 includes components necessary for automatically cleaning the surface of the roller with a cleaning cloth. The cleaning cloth is supplied from the supply unit and is wound up by the winding unit. A pad for pressing the cleaning cloth against the surface of the roller is disposed between the supply unit and the winding unit.

By the way, the foreign matter adhering to the surface of the roller is not necessarily distributed uniformly on the surface of the roller. Foreign matter adhering to the roller changes the surface properties of the roller. Moreover, once a foreign substance adheres, the foreign substance grows gradually and may accumulate thickly. When the foreign matter adheres to the roller thickly, the outer diameter of the roller increases at the portion where the foreign matter adheres. A pad used in the roller cleaning device of Patent Document 1 does not have a structure for escaping from a foreign substance when the cleaning cloth is pressed against the surface of the roller, and thus collides with the foreign substance via the cleaning cloth. Even if the pad collides with a foreign object, if the rotational force of the roller is sufficiently large and the cleaning cloth does not break, cleaning is performed normally, so that it can serve as a roller cleaning device. However, since the pad collides with the foreign matter, the change in the frictional resistance of the cleaning cloth with respect to the rotation of the roller is large. As a result, it becomes difficult to keep the rotation of the roller constant, and it becomes difficult to maintain the quality of the product. Therefore, this cleaning device is not suitable for cleaning the roller during the production operation of the product.

The roller cleaning device described in Patent Document 2 uses a blade as a pressing member for a cleaning cloth, and the cleaning cloth is pressed against the surface of the roller by the blade. As for the roller cleaning apparatus of patent document 2, the whole apparatus is rotatable centering on a rotating shaft. First, the cleaning cloth is strongly pressed linearly by the blade against the surface of the roller, and then comes into weak contact with the surface so as to cover the surface of the roller. When there is a large structure on the surface of the roller, the roller cleaning device of Patent Document 2 has a structure in which the entire roller cleaning device escapes over it. However, when there is foreign matter accumulated on the surface of the roller, the blade collides with the foreign matter via the cleaning cloth. That is, the blade of the roller cleaning device of Patent Document 2 includes a compression spring inside, and the tip of the blade hits the surface of the roller by the urging force of the compression spring. Since the urging force acts along the width direction of the blade, the compression spring does not expand or contract according to the foreign matter attached to the roller surface.

Therefore, this roller cleaning device structurally increases the mass of the movable part, so that when foreign matter is accumulated thickly or small foreign matter is continuously present, it can follow the shape of the foreign matter and move. I can't do it. For this reason, the roller cleaning device collides with the foreign material against the shape of the foreign material, and the impact of the collision greatly disturbs the rotation of the roller.
This roller cleaning device has the same problem as the roller cleaning device of Patent Document 1, and has a problem that the roller cannot be cleaned during product production. Further, the position of the foreign matter accumulated on the surface of the roller is unspecified, and in the structure of this roller cleaning device, the blade cannot escape from the foreign matter at the unspecified position.

Patent Document 3 describes a roller cleaning device that can clean a roller without interrupting the production line. The roller cleaning device of Patent Document 3 is similar to the roller cleaning device of Patent Document 1 in that a pad is used as the pressing body, but the width of the cleaning cloth is shorter than the width of the roller. If the contact width between the cleaning cloth and the surface of the roller is small, the influence of foreign matter adhering to the roller surface is reduced. Even if the pad collides with a foreign object, the influence of the cleaning cloth on the rotation of the roller can be reduced if the rotational force of the roller is sufficiently large.
However, since the influence of the cleaning cloth on the rotation of the roller depends on the rotational force of the roller, the state of foreign matter on the surface of the roller, and the characteristics of the cleaning cloth, the roller cleaning device of Patent Document 3 is disclosed in Patent Document 1 and Patent Document 2 has the same problem as the roller cleaning device.

In addition, as a result of conducting an experiment for comparing the pad type and the blade type in the process of determining the structure of the pressing body, the inventors have compared the pad type with the cleaning cloth and the surface of the roller as compared with the blade type. It was found that it was difficult to keep the contact state constant over a long period of time. The pad type has a large change with time in the contact state. This is because the contact state between the cleaning cloth and the surface of the roller is determined by the elastic force of the rubber used for the pad, the pressing force of the pad, and the like. The elastic force of rubber changes with time depending on temperature and usage history. In general, when the air pressure is used to obtain the contact pressure between the pad and the roller to be cleaned, it is difficult to keep the air pressure at a predetermined constant pressure, which is also an unstable cause.
On the other hand, in the blade type, the contact pressure is determined by a mechanical spring. Therefore, the blade type is stable with little change with time in the state where the cleaning cloth and the surface of the roller are in contact with each other.

JP 2004-322368 A Japanese Patent Laid-Open No. 02-108543 JP 2009-269004 A

The conventional roller cleaning device has a problem that the frictional resistance between the cleaning cloth and the surface of the roller greatly fluctuates when there is a deviation in the adhesion state of the foreign matter in the circumferential direction or the axial direction of the roller surface. .
This is because the conventional roller cleaning device has a structure in which the surface of the roller is wiped by causing a pad or blade to collide with the foreign matter regardless of the attached state of the foreign matter attached to the surface of the roller.
The present invention realizes a roller cleaning device in which a change in frictional resistance between the cleaning cloth and the roller surface is reduced even when foreign matter is unevenly attached to the surface of the roller.

In order to solve the above problems, a roller cleaning device of the present invention is
Supply means for supplying a cleaning cloth for wiping the surface of the roller;
Winding means for winding the cleaning cloth supplied from the supply means;
A pressing body that is between the supply means and the winding means and presses the cleaning cloth against the surface of the roller;
A cleaning unit that carries the supply means, the winding means, and the pressing body, and moves along the axial direction of the roller;
The pressing body is urged toward the surface of the roller in a state of being inclined in the escape direction with respect to a change in the surface of the roller, and the cleaning cloth is pressed linearly against the surface of the roller. The width of the cleaning cloth is shorter than the length of the roller.

The “change in the surface of the roller” is a state in which the outer diameter of the roller has changed as a result of foreign matter adhering to the surface of the roller or attaching a structure such as a marking.
“Inclined in the relief direction with respect to changes in the surface of the roller” means that the pressing body is tilted in the direction in which it can be pushed away by foreign matter adhering to the surface of the roller or markings attached to the surface of the roller. It is. That is, when the pressing body is biased toward the surface of the roller while being inclined in the escape direction, the pressing body is in contact with the surface of the roller, and the pressing body is in contact with the surface of the roller. A contact point is formed, and two angles J and K are formed between the tangent of the roller surface at the contact point and the pressing body. The upstream angle J in the rotation direction of the roller is in the range of 0 to 90 degrees, and the downstream angle K is in the range of 90 to 180 degrees.
In addition, “inclined in a direction to bite into the change in the surface of the roller” means that the pressing body is inclined in a direction in which it collides with a foreign matter adhering to the surface of the roller or a marking attached to the surface of the roller. It is in a state. That is, when the pressing body is biased toward the surface of the roller while being inclined in the biting direction, the pressing body is in contact with the surface of the roller, and the pressing body is in contact with the surface of the roller. A contact point is formed, and two angles J and K are formed between the tangent of the roller surface at the contact point and the pressing body. The upstream angle J in the rotation direction of the roller is in the range of 90 to 180 degrees, and the downstream angle K is in the range of 0 to 90 degrees.

Furthermore, the present invention includes the following configurations.
(1) The pressing body presses the cleaning cloth linearly against the surface of the roller.
(2) The width of the cleaning cloth is longer than the length of the pressing body.
(3) Provide a mechanism for changing the strength of pressing the cleaning cloth against the surface of the roller.
(4) The pressing body includes a first plate inclined in a direction to escape from the foreign material and a second plate inclined in a direction to bite into the foreign material.
(5) The pressing body is provided with a plurality of plates inclined in a direction to escape from the foreign matter.
(6) The cleaning unit has a variable moving speed and can be stopped at an arbitrary position.
(7) The cleaning cloth is a cloth of microfiber or cloth containing microfiber.
(8) The pressing body can be moved back and forth with respect to the roller.

According to the roller cleaning device of the present invention, when the cleaning cloth is pressed against the surface of the roller by the pressing body, the pressing body collides with the foreign object even if there is a deviation in the adhesion state of the foreign material on the surface of the roller. Run away. Therefore, the frictional resistance between the cleaning cloth and the surface of the roller does not vary greatly.
Moreover, the width | variety of the cleaning cloth was shortened rather than the length of the roller, and the cleaning cloth was moved instead and wiped off. Therefore, since the width of the cleaning cloth is short, the variation in the frictional resistance between the cleaning cloth and the surface of the roller is further reduced.

FIG. 1 is a side view of the first embodiment of the present invention. FIG. 2 is a front view of the first embodiment of the present invention. FIG. 3 is a side view of the second embodiment of the present invention. FIG. 4 is a front view of one base plate side according to the first embodiment of the present invention. FIG. 5 is an operation explanatory view of the first example of the advance / retreat mechanism of the pressing body shown in FIG. FIG. 6 is an explanatory diagram of a first modification of the pressing body. FIG. 7 is an explanatory diagram of an aspect of the cleaning cloth detection sensor. FIG. 8A is an explanatory view of the movement of the cleaning unit. FIG. 8B is a diagram illustrating an example of a movement speed pattern. FIG. 9 is an explanatory view of the action of the pressing body correction screw. FIG. 10 is an explanatory diagram of the inclination of the pressing body. FIG. 11 is an explanatory diagram of another embodiment of the pressing portion of the pressing body. FIG. 12 is an explanatory diagram of another embodiment of the pressing body. FIG. 13 is an explanatory diagram of a second example of the advance / retreat mechanism of the pressing body. FIG. 14 is an explanatory diagram of a third example of the advance / retreat mechanism of the pressing body. FIG. 15 is an explanatory diagram of a fourth example of the advance / retreat mechanism of the pressing body. FIG. 16 is an explanatory diagram of a second modification of the pressing body.

FIG. 1 is a side view of the first embodiment of the present invention. 2 and 4 are front views of the embodiment of the present invention shown in FIG. Reference numeral 1 denotes a roller cleaning device. Reference numeral 6 denotes a roller to be cleaned by the roller cleaning device 1. The roller 6 is sometimes called a cylinder. N is an arrow indicating the rotation direction of the roller 6 and rotates counterclockwise in FIG. Reference numeral 2 denotes a cleaning unit. The cleaning unit 2 supports main components of the roller cleaning device 1.

In FIG. 1, in order to explain the internal structure of the cleaning unit 2, a part of the structure is exposed on the drawing by a broken line M. 5 is a cleaning cloth. Reference numeral 3 denotes supply means for supplying the cleaning cloth 5. Reference numeral 4 denotes winding means for winding the cleaning cloth 5 supplied from the supply means 3. Reference numeral 7 denotes a pressing body for pressing the cleaning cloth 5 against the surface 8 of the roller 6. The pressing body 7 is disposed between the supply unit 3 and the winding unit 4. The cleaning unit 2 is equipped with a supply means 3, a winding means 4 and a pressing body 7.

As shown in FIG. 2, the cleaning unit 2 has a structure in which a pair of

base plates

9 and 10 are arranged to face each other. The width P of the cleaning cloth 5 is shorter than the distance between the

base plates

9 and 10, and the length L of the roller 6 is longer than the width P of the cleaning cloth 5. The

base plates

9 and 10 are integrally connected by a horizontal column 14 or the like. As shown in FIG. 1, the pressing body 7 presses the cleaning cloth 5 so as to come into linear contact with the surface 8 of the roller 6, and the pressing body 7 is in the escape direction with respect to the change of the surface 8 of the roller 6. It is attached at an angle.

Further, the pressing body 7 has an elongated plate-like outer shape, has a spring property, and is urged toward the surface 8 of the roller 6. Assuming that the length L of the roller 6 (FIG. 8), the width P of the cleaning cloth 5 (FIG. 2), and the length Q of the pressing body 7 (FIG. 2), the relationship between the length dimensions is L> P> Q. Is set to For example, L is about 150 to 800 cm, P is about 40 to 120 cm, and Q is 2 to 20 cm shorter than P. That is, the width P of the cleaning cloth 5 is set so that the pressing portion 29 of the pressing body 7 does not directly contact the surface 8 of the roller 6.

FIG. 10 is an explanatory diagram of the inclination of the surface 8 of the roller 6 and the pressing body 7. The roller 6 rotates in the rotation direction N (counterclockwise in FIG. 10). Line E is the tangent of surface 8 with respect to contact H0. The pressing body 81 (7) can be rotated about the rotation shaft 82 (22) and is urged toward the surface 8 so that the pressing portion 83 (29) is always in contact with the surface 8. The tip of the pressing portion 83 contacts the surface 8 at the contact H0. The pressing body 81 can contact the surface 8 at various angles with respect to the tangent line E.

Two angles J and K are formed between the tangent E of the surface 8 of the roller 6 and the pressing body 81 at the contact H0. When the pressing body 81 is inclined in the “escape direction”, the upstream angle J of the rotation direction N of the roller 6 is in the range of 0 degrees to 90 degrees, and the pressing body 81 is inclined in the “biting direction” The angle J is in the range of 90 degrees to 180 degrees. That is, when the pressing body 81 is inclined in the “escape direction”, the angle K on the downstream side in the rotation direction N of the roller 6 is in the range of 90 degrees to 180 degrees, and the pressing body 81 is inclined in the “biting direction”. The angle K is in the range of 0 to 90 degrees.

An example of a state in which the pressing body 81 is inclined in the biting direction is indicated by F. R schematically shows foreign matter adhering to the surface 8 of the roller 6. The operation with respect to the foreign matter R differs depending on whether the pressing body 81 is inclined in the escape direction or the biting direction. If the pressing body 81 is inclined in the escape direction, when the foreign object R reaches the contact H0, the pressing body 81 rotates around the rotation shaft 82 toward the arrow S and collides with the foreign object R. Absent. On the other hand, as shown in F, if the pressing body 81 is inclined in the biting direction, the pressing body 81 does not escape and the pressing portion 83 collides with the foreign object R.

In FIG. 1, the pressing body 7 presses the cleaning cloth 5 linearly against the surface 8 of the roller 6 so as to come into contact with the pressing body 7, and escapes from changes in the surface 8 of the roller 6 due to foreign matter adhering to the surface 8 of the roller 6. It is urged toward the surface 8 of the roller 6 in a state where it is tilted to the right. Further, the width P of the cleaning cloth 5 is shorter than the length L of the roller 6. Therefore, the entire cleaning unit 2 does not escape against the change of the surface 8 of the roller 6 due to the foreign matter adhering to the surface 8 of the roller 6, but the pressing body 7 escapes. Compared with the total weight of the cleaning unit 2, the weight of the pressing body 7 (including the weight of the cleaning cloth 5 pressed by the pressing body 7) is light, so it escapes even to fine foreign matter and the foreign matter adheres intermittently. Even if it is, run away without colliding. This inclination of the pressing body 7 is effective in the case where there is a foreign substance, the case where there is no foreign substance, and the case where the size or state of the foreign substance changes. In addition, the inclination of the pressing body 7 is not only a foreign matter that can be wiped off with the cleaning cloth 5 but also a foreign matter accompanying a change in the outer diameter direction of the roller 6 for marking on a film or the like provided on the surface 8 of the roller 6. It is also effective for equivalent structures.

The cleaning cloth 5 has an effect of gradually wiping off foreign matter by itself if there is friction with the foreign matter. When the cleaning cloth 5 is a microfiber cloth or a cloth containing microfibers, the wiping action of the cloth itself is stronger than that of a normal fiber cloth not containing microfibers. Since the roller 6 is rotating while the cleaning cloth 5 is in contact with the surface 8 of the roller 6, the foreign matter is gradually removed by the cleaning cloth 5. Further, since the width P of the cleaning cloth 5 is shorter than the length of the roller 6, the influence of the roller cleaning device 1 on the rotation of the roller 6 is small.

2, reference numeral 11 denotes a rail laid in parallel with the roller 6, and

reference numerals

12 and 13 denote bearings that support the

base plates

9 and 10. The

bearings

12 and 13 are combined with the rail 11. Therefore, the cleaning unit 2 can move along the rail 11. Reference numeral 15 denotes a vertical support. One end of the vertical support 15 is connected to the horizontal support 14 and a wheel 16 is provided at the other end. The vertical column 15 moves together with the cleaning unit 2 by wheels 16 and reinforces the mechanical structure of the cleaning unit 2 through the horizontal column 14.

The supply means 3 includes a supply shaft 17 as shown in FIG. Both ends of the supply shaft 17 are attached to the

base plates

9 and 10. In addition, the supply means 3 has shown the example which mounts the unused cleaning cloth 5 as a roll in the example shown in FIG. However, since the supply unit 3 only needs to supply an unused cleaning cloth, the cleaning cloth 5 may be a cartridge housed in a box. Furthermore, when the supply means 3 is a cartridge, the cleaning cloth in the cartridge may be a roll or may be folded and accommodated. The winding means 4 includes a winding shaft 18. Reference numeral 19 denotes an air cylinder. Reference numeral 20 denotes a rod of the air cylinder 19. Reference numeral 21 denotes a feed arm of the winding shaft 18. Although not shown, the winding shaft 18 includes a one-way clutch that allows the shaft 18 to rotate only in the clockwise direction in FIG. The one-way clutch operates in combination with the arm 21 and winds the cleaning cloth 5 intermittently every time the air cylinder 19 operates. The cleaning cloth 5 once wound up by the winding shaft 18 does not run backward toward the supply means 3 because the winding shaft 18 does not rotate counterclockwise.

22 is a rotating shaft. Both ends of the rotating shaft 22 are attached to the

base plates

9 and 10. Reference numeral 23 denotes a pressing cylinder. The pressing cylinder 23 is fixed to the base plate 10 via a support column 24, and the rod 25 is connected to the rotary shaft 22 via a pressing arm 26. Reference numeral 27 denotes a mounting screw. The attachment screw 27 fixes the attachment portion 28 which is one end of the pressing body 7 to the rotating shaft 22. When the pressing cylinder 23 operates, the rotary shaft 22 rotates clockwise or counterclockwise. The pressing body 7 is rotated by the rotation of the rotating shaft 22.

The pressing body 7 includes a pressing portion 29 on the opposite side of the mounting portion 28. When the rotary shaft 22 rotates, the pressing body 7 presses the cleaning cloth 5 against the surface 8 of the roller 6 or moves the cleaning cloth 5 away from the surface 8 depending on the rotation position. That is, the pressing body 7 has a long and narrow plate shape that is rotatably attached to the rotary shaft 22 and presses the cleaning cloth 5 linearly in the axial direction against the surface 8 of the roller 6 by the pressing portion 29 along the longitudinal direction. It has become.

The state shown in FIG. 1 shows a state in which the pressing body 7 presses the cleaning cloth 5 against the surface 8. As shown in FIG. 2, the length Q of the pressing body 7 is shorter than the width P of the cleaning cloth 5. Thus, the pressing portion 29 of the pressing body 7 does not directly contact the surface 8 of the roller 6. As shown in FIG. 2, the pressing cylinder 23 is provided on the base plate 10 side. However, the pressing cylinder 30 can be provided symmetrically on the base plate 9 side and can be operated simultaneously with the pressing cylinder 23. In the following description, when it is not necessary to distinguish between the

base plates

9 and 10, they may be simply referred to as the base plate 10.

The

pressing cylinders

23 and 30 may be commercially available air cylinders, but may be electric cylinders. In the case of the electric pressing cylinder 23, the rod 25 is moved in and out by a motor in the pressing cylinder. In the case of the pneumatic pressure cylinder 23, the rod 25 has two positions, a state in which it exits from the pressure cylinder and a state in which it enters. On the other hand, in the case of an electric cylinder, the rod 25 can be stopped at an arbitrary position. As a result, the pressing force with which the pressing body 7 presses the cleaning cloth 5 against the surface 8 of the roller 6 can be set to an arbitrary value and can be changed. Management of the pressing force of the pressing body 7 can be performed by the angle of the rotating shaft 22. Thus, the

pressing cylinders

23 and 30 can be provided with a mechanism that changes the strength of pressing the cleaning cloth 5 against the surface 8 of the roller 6. If the strength of pressing the cleaning cloth 5 is variable, it is possible to avoid pressing the cleaning cloth 5 against the roller 6 with an unnecessarily strong force. Can be used.

FIG. 3 is a side view of the second embodiment of the present invention. In the embodiment shown in FIG. 1, the winding means 4 is configured to perform intermittent winding, but may be configured to wind up by the electric motor 32 shown in FIG. 3. In this case, intermittent winding is possible, but continuous winding is also possible. The cleaning unit 2 moves along the axial direction of the roller 6. When the cleaning unit 2 is moving, the cleaning cloth 5 can be pressed against the surface 8 of the roller 6 and the cleaning cloth 5 can be gradually wound up.

33 and 34 are guide shafts on the supply side for guiding the cleaning cloth 5. 35 and 36 are guide shafts on the winding side. The

guide shafts

33, 34, 35, 36 constitute a traveling path for the cleaning cloth 5. Reference numeral 37 denotes a width direction stabilizing mechanism. The width direction stabilizing mechanism 37 can be advanced and retracted toward the

guide shafts

33 and 36 by an advancing and retracting cylinder 38 fixed to the base plate 10. The width direction stabilizing mechanism 37 is operated by the advance / retreat cylinder 38, so that the cleaning cloth 5 is sandwiched between the

guide shafts

33 and 36 and the width direction stabilizing mechanism 37 as necessary. Accordingly, even if a force in the direction of shifting the cleaning cloth 5 in the width direction is applied to the cleaning cloth 5, the cleaning cloth 5 does not come off. As a result, it is possible to avoid the pressing body 7 from being exposed from the cleaning cloth 5 due to the traveling position of the cleaning cloth 5 being deviated from the predetermined position. As shown in FIG. 4, the width direction stabilization mechanism 37 sandwiches the cleaning cloth 5 at the end close to the base plate 10.

In FIG. 4, 39 is a cleaning cloth detection sensor. In the example shown in FIG. 4, it is arranged between the pressing body 7 and the supply means 3 to detect the presence or absence of the cleaning cloth 5. In the example of FIG. 4, the cleaning cloth detection sensor 39 is provided on the base plate 10 and detects the position of the end of the cleaning cloth 5 on the base plate 10 side. When the cleaning cloth detection sensor 39 detects an abnormality of the cleaning cloth 5, it means that the cleaning cloth 5 has deviated from a predetermined traveling path or that the cleaning cloth 5 has been removed. In any case, since the pressing body 7 is exposed from the cleaning cloth 5, the pressing body 7 is immediately separated from the surface 8 of the roller 6 or when it is already separated, the cleaning is not started. To do. The cleaning cloth detection sensor 39 is desirably in the vicinity of the pressing body 7. That is, it may be between the pressing body 7 and the supply means 3, may be between the pressing body 7 and the winding means 4, and may be installed before and after the pressing body 7.

FIG. 7 is an explanatory view showing an aspect of the cleaning cloth detection sensor 39. The cleaning cloth detection sensor 39 shown in FIG. 7A is an optical example. When the surface of the cleaning cloth 5 is a white fabric that reflects light, as shown by the light 72, the reflection of the emitted light may be detected. The optical cleaning cloth detection sensor 39 can be easily procured from the market. The optical sensor shown in FIG. 7A is advantageous in that procurement is easy and the price is low. The cleaning cloth detection sensor 39 shown in FIG. 7B includes a sensor arm 73, and the sensor arm 73 includes a detection roller 74 at the tip. The sensor arm 73 is urged clockwise in FIG. 7B. When the cleaning cloth 5 is in a normal position, the sensor arm 73 is in contact with the cleaning cloth 5. On the other hand, when the cleaning cloth 5 becomes empty or loosens, the sensor arm 73 rotates in the clockwise direction. The mechanical sensor 39 shown in FIG. 7B is more expensive than the optical sensor shown in FIG. 7A, but not only the presence or absence of the cleaning cloth 5, but also the loosening of the cleaning cloth 5, the cleaning cloth There is an advantage that the vibration 5 can be detected with high accuracy.

Although the width direction stabilizing mechanism 37 and the cleaning cloth detection sensor 39 have been described only on the side of one base plate 10 based on FIGS. 1 and 4, they should be symmetrically installed on the side of the other base plate 9. . The width direction stabilization mechanism 37 operates when the cleaning cloth 5 is intermittently fed and there is a stop period. Further, the width direction stabilizing mechanism 37 does not need to be operated at all times. For example, the width direction stabilizing mechanism 37 is used when the pressing body 7 is strongly pressed against the surface 8 of the roller 6 and the cleaning unit 2 is moved in the pressed state. It is valid.

FIG. 5 is an operation explanatory view of the first advance / retreat mechanism of the pressing body 7 shown in FIG. The role of the pressing body 7 is to press the cleaning cloth 5 against the surface 8 of the roller 6 in the shape of an elongated line with the length of the pressing body 7. The structure of the pressing body 7 is, for example, a structure in which a pressing portion 29 is attached to a thin metal plate spring 43. The pressing portion 29 can be made of soft metal such as aluminum, rubber, resin, wood, or the like. The material of the pressing portion 29 should have a hardness that does not damage the surface 8 even if the pressing portion 29 accidentally contacts the surface 8. When pressing the cleaning cloth 5 against the surface 8, the width T of the pressing portion 29 determines the contact area between the cleaning cloth 5 and the surface 8. The width T is determined by the type and hardness of the foreign matter adhering to the surface 8, the material of the cleaning cloth 5, and the like. If the pressing force pressing the pressing portion 29 against the surface 8 is constant, if the width T is short, the pressing force per unit area against the surface 8 of the cleaning cloth 5 increases, and if the width T is long, the pressing force per unit area is long. The pressure becomes smaller.

In addition, when the surface 8 of the roller 6 becomes high temperature, the material of the pressing part 29 can be selected in consideration of heat resistance. The roller cleaning device 1 uses the cleaning action that the cleaning cloth 5 originally has. In particular, when a microfiber cloth or a cloth containing microfiber is used for the cleaning cloth 5, the pressing portion 29 has a function of bringing the cleaning cloth 5 into contact with the surface 8 of the roller 6. If the material of the pressing part 29 has the same shape and hardness, the influence of the physical properties of the material of the pressing part 29 itself is small.

5, 42 indicates a state in which the pressing body 7 is strongly pressed toward the surface 8 of the

roller

6, and 43 indicates a state in which the pressing body 7 is separated from the surface 8 of the roller 6. R schematically shows foreign matter adhering to the surface 8. The pressing body 7 is inclined in the escape direction with respect to the rotation direction N of the roller 6. Therefore, even if the foreign matter R adheres to the surface 8 of the roller 6, the pressing body 7 easily escapes in the direction of the arrow S. Therefore, even if the foreign matter R exists, the pressing body 7 does not collide with the foreign matter R. Therefore, the frictional resistance between the cleaning cloth 5 and the surface 8 does not change greatly, and the presence of the foreign matter R has little influence on the rotation control of the roller 6.

In FIG. 2, 48 is a cleaning unit moving motor. The cleaning unit moving motor 48 includes a rotating shaft 49. A driving wire 50 is fixed to the rotating shaft 49 in a loop shape. One side of the drive wire 50 is fixed to the

base plates

9 and 10 by

clamps

51 and 52. The cleaning unit moving motor 48 has a built-in encoder (not shown) that detects a rotation angle, and the position of the cleaning unit 2 can be specified by an absolute position using coordinates along the rail 11 as an index. Accordingly, the cleaning unit moving motor 48 can move the cleaning unit 2 at an arbitrary speed and can stop the cleaning unit 2 at an arbitrary position.

Therefore, the roller cleaning device 1 can clean an arbitrary position by the cleaning unit moving motor 48. In addition, the roller cleaning device 1 can perform cleaning by distinguishing between a central cleaning position and a position that does not need to be cleaned at the axial position of the roller 6 by programming control. Or the consumption of the cleaning cloth 5 can be reduced.
The roller 6 does not necessarily need to be cleaned evenly in any position in the axial direction. From experience, in the case of a printing machine or a film processing machine, the roller 6 often becomes intensively soiled near both ends of the printing paper or film being conveyed.

FIG. 8A is an explanatory diagram of the movement of the cleaning unit 2. The cleaning unit 2 can freely move between the left end LP and the right end RP along the axial direction of the roller 6 by the cleaning unit moving motor 48, and can be stopped at any position. P0 indicates the absolute position of the cleaning unit 2 at the left end LP, and P5 indicates the absolute position of the cleaning unit 2 at the right end RP. As an example of how the roller 6 is soiled, P0 and P5 are end portions of the roller 6 and are relatively easily soiled. The positions of P1, P2, P3, and P4 are not very dirty. In such a case, it is possible to make the cleaning unit 2 have a low traverse speed at the positions P0 and P5, or stop for a predetermined time and pass at a high speed at the positions P1, P2, P3, and P4. The movement pattern of the cleaning unit 2 may determine the state of foreign matter removal by detecting the state of foreign matter adhesion on the roller 6 with a sensor. However, in a stationary production machine such as a printing machine or a film processing machine, it is practical to determine the movement pattern of the cleaning unit 2 based on past operation experience. If the movement pattern of the cleaning unit 2 is optimized, the cleaning time can be shortened or more reliable cleaning can be performed. That is, if the pattern of the moving speed of the cleaning unit 2 is matched with the foreign matter adhesion state of the roller 6, unnecessary portions that do not need to be cleaned are not wasted.

FIG. 8B shows an example of a movement speed pattern. In FIG. 8B, the vertical axis represents the position of the cleaning unit 2 shown in FIG. 8A, and the horizontal axis represents the passage of time. The inclination of the graph indicates the moving speed of the cleaning unit 2 as it is. The cleaning unit 2 starts from the position P0 at time T0, and moves so as to arrive at the position P5 at time T8. In the vicinity of P0 and P5 of the roller 6, there is much dirt on the roller 6. Therefore, the cleaning unit 2 reduces the moving speed in the vicinity of P0 and P5 or pauses as necessary. The portions P2 and P3 of the roller 6 pass at a high speed because there is little dirt. B1 and B2 in FIG. 8B show an example of moving the cleaning unit 2 while moving the cleaning cloth 5 back and forth in small increments. The cleaning unit 2 is movable along the roller 6 and can be stopped, and reciprocates in small increments while the cleaning cloth 5 is pressed against the roller 6.

B1 in FIG. 8B shows an example in which the round-trip amplitude is small, and B2 in FIG. 8B shows an example in which the round-trip amplitude is larger than the example of B1. When the cleaning unit 2 is moved while the cleaning cloth 5 is moved back and forth in small increments, the foreign matter on the surface 8 of the roller 6 and the cleaning cloth 5 come into contact with each other at many contact angles. Therefore, more effective cleaning is possible depending on the adhesion state of the foreign matter. Further, when the cleaning cloth 5 is reciprocated in small increments, the relative movement distance between the cleaning cloth 5 and the surface 8 of the roller 6 is longer than when the cleaning cloth 5 is moved monotonously. Therefore, effective cleaning becomes possible. The means for moving the cleaning cloth 5 in small increments can be realized by using the cleaning unit moving motor 48 to move the entire cleaning unit 2 in small increments. However, the mechanism for moving only the pressing body 7 and the cleaning cloth 5 may be used. Good.

Also, if the speed of feeding the cleaning cloth 5 during cleaning is controlled, the consumption of the cleaning cloth 5 can be reduced. The feed amount of the cleaning cloth 5 is changed between a portion of the roller 6 to be cleaned heavily and a portion that does not require much cleaning. As a result, wasteful consumption of the cleaning cloth 5 can be reduced.

Furthermore, when there are several setting patterns for the rotational speed of the roller 6, it can be reflected in the moving speed of the cleaning unit 2. When the rotational speed of the roller 6 is fast, the cleaning unit 2 is also moved at a high speed in synchronization with it, and when the rotational speed is slow, the cleaning unit 2 is moved at a slow speed. As a result, more reliable cleaning can be realized.

As the cleaning cloth 5, a nonwoven fabric, a polishing cloth containing an abrasive, or a cloth containing microfibers can be used in accordance with the roller 6 to be cleaned. In the roller cleaning device 1 that implements the present invention, even when a non-woven fabric is used as the cleaning cloth 5, the friction between the cleaning cloth 5 and the surface 8 is generated when foreign matter is unevenly attached to the surface 8 of the roller 6. There is little change in resistance. That is, in this invention, a nonwoven fabric is general purpose and suitable for all cleaning. A polishing cloth containing an abrasive is preferably attached when the roller 6 needs to be polished.

More preferably, in the roller cleaning device embodying the present invention, a microfiber cloth or a cloth containing microfiber is suitable as the cleaning cloth 5. A microfiber is a thin fiber such as nylon or polyester, and can be obtained from the manufacturer of the fiber or cloth as the state of the fiber, the state of the cloth, or the state of the processed product according to the intended use, For example, Toray Industries, Inc. To RAYSEE (trade name). Microfiber itself has a cleaning action. The microfiber cloth is a cloth in which most of the cloth is made of microfiber. The cloth including the microfiber is, for example, a cloth using a microfiber for the warp and using a fiber that is not a microfiber for the weft, or a cloth in which a microfiber and a fiber that is not a microfiber are mixed. That is, by using a microfiber cloth or a cloth containing microfiber as the cleaning cloth 5, it is possible to reduce the pressing force of the pressing body 7 on the surface of the roller 6. As a result, when the cleaning cloth 5 is made of a microfiber cloth or a cloth containing microfibers, the cleaning cloth 5 made of foreign matter is further compared with the case where a conventional cleaning cloth such as a non-woven fabric made of ordinary fibers is used. The frictional resistance between the roller 6 and the surface 8 of the roller 6 and the change thereof can be reduced. In addition, a cloth is a non-woven fabric in which fibers are randomly entangled and a mixture thereof in addition to a woven fabric.

The roller cleaning device 1 is often used in a clean environment with little dust. When the roller cleaning device 1 is used in a clean environment, it is preferable that dust is not generated from the cleaning cloth 5 itself. For this purpose, it is preferable that both ends of the cleaning cloth 5 be subjected to dust-free processing that does not generate dust.

If the cleaning cloth 5 is a microfiber, it can be made dust-free by cutting and hardening the both ends of the cleaning cloth 5 with a heat ray or a laser. Moreover, the cleaning cloth 5 can be made dust-free by applying an adhesive or a paint on both ends.
Further, when the roller 6 is at a high temperature, it is preferable that the cleaning cloth 5 is used so as to exhibit a sufficient cleaning performance.

3 is a temperature sensor for measuring the temperature of the surface 8 of the roller 6. A commercially available infrared temperature sensor can be used as the temperature sensor 75. The temperature sensor 75 measures the temperature of the surface 8 of the roller 6 with infrared rays emitted from the roller 6. For example, when the operating temperature on the high temperature side of the cleaning cloth 5 is 240 degrees, for safety, the cleaning operation of the roller cleaning device 1 is not performed when the temperature of the surface 8 exceeds 200 degrees. Even when the cleaning operation is being performed, the cleaning operation may be stopped when the temperature of the surface 8 exceeds 200 degrees.

In FIG. 3, 55 and 56 are spray nozzles. The spray nozzle 55 is located between the supply unit 3 and the pressing unit 29 and supplies a liquid such as a cleaning liquid toward the cleaning cloth 5. The spray nozzle 56 is located between the pressing portion 29 and the winding means 4 and supplies a liquid such as a cleaning liquid toward the surface 8 of the rotor 6. The spray nozzles 55 and 56 can be used as required, but are particularly useful when using microfibers for the cleaning cloth 5. Microfibers readily absorb and store liquids as an inherent property. Therefore, depending on the type of foreign matter adhering to the surface 8 of the roller 6, when a liquid is used, the cleaning time can be shortened or the amount of the cleaning cloth 5 used can be reduced. The spray nozzle 55 sprays liquid onto the cleaning cloth 5 before the cleaning cloth 5 reaches the pressing body 7. The spray nozzle 56 sprays liquid toward the surface 8 of the roller 6. One or both of the

spray nozzles

55 and 56 may be used as necessary.

2 and 3, 58 denotes a pressing body correction screw. The pressing body correction screw 58 is attached to the horizontal column 14 and includes a correction block 59 in contact with the rotation shaft 22. The pressing body correction screw 58 and the correction block 59 are provided substantially at the center of the rotating shaft 22. The pressing body correction screw 58 applies pressure to the rotary shaft 22 via the correction block 59. When pressure is applied to the correction block 59 by the pressing body correction screw 58, the rotation center 60 of the rotary shaft 22 is curved so as to draw a gentle arc. Therefore, the pressing body 7 also draws a gentle arc. The pressing body 7 needs to press the cleaning cloth 5 against the surface 8 of the roller 6 with an equal pressure. Therefore, when the pressing body 7 hits the surface 8, a slightly gentle arc is drawn, and first, the longitudinal center of the pressing body 7 is preferably in contact with the surface 8.

FIG. 9 is an explanatory view schematically showing the action of the pressing body correction screw 58. The pressing body correction screw 58 is attached to the horizontal column 14. The correction block 59 is in contact with the rotation shaft 22. The left end 78 of the rotating shaft 22 is rotatably supported by one base plate 9, and the right end 79 is rotatably supported by the other base plate 10. The pressing body correction screw 58 presses substantially the center of the rotating shaft 22 via the correction block 59. Then, the central portion of the pressing body 7 is deformed from a straight line 77 as a curved line 76. Note that the deformation in FIG. 9 is highlighted. In actual pressing deformation, when the length of the pressing body 7 is 80 cm, the distance between the straight line 77 and the curved line 76 is about 0.05 cm to 0.5 cm.

In FIG. 5, the pressing portion 29 of the pressing body 7 presses the cleaning cloth 5 linearly against the surface 8 of the roller 6 with a width T in the axial direction. FIG. 5 shows an example in which the pressing body 7 has a spring property. However, since it is sufficient that the cleaning cloth 5 can be linearly pressed against the surface 8 of the roller 6 by the pressing portion 29 of the pressing body 7, a spring for applying a pressing force may be used separately from the pressing portion 7.

FIG. 6 shows a first modification of the pressing body 7. FIG. 6A is an example of a long and narrow prism with a wide pressing body 64 (7). The pressing body 64 can rotate around the shaft 65. 66 is a compression spring. Although the cleaning cloth is not shown in the drawing, the pressing body 64 is pressed by the compression spring 66 in a state where the cleaning cloth is pressed against the surface 8 of the roller 6 so as to be linearly contacted and is inclined in the escape direction with respect to the change of the surface 8. The surface 8 is biased.

R is a schematic representation of foreign matter adhering to the surface 8. That is, in the example shown in A of FIG. 6, even if the foreign object R advances in the direction N and reaches the pressing portion 67 of the pressing body 64, the pressing body 64 is in the direction indicated by the arrow S about the shaft 65. Rotates easily and generates almost no impact. This is because the pressing body 64 is provided to be inclined in the escape direction with respect to the surface 8 and rotates in the direction indicated by the arrow S due to the influence of the foreign matter R.

The pressing portion 67 of the pressing body 64 shown in FIG. 6A is a right angle. The cleaning cloth 5 is linearly pressed against the surface R by the pressing portion 67 that is at a right angle. The contact area between the cleaning cloth 5 and the surface 8 is very small. The form of the pressing portion 67 shown in FIG. 6A is useful when increasing the pressing force per unit area against the cleaning cloth 5. The material of the pressing body 64 may be hard resin, metal, wood, a composite thereof, or the like, and may be rubber having high hardness.

6B is an example in which the pressing portion 69 of the pressing body 68 is chamfered. If the pressing portion 69 is chamfered, the cleaning cloth 5 comes into contact with the surface 8 in a somewhat larger area. Reference numeral 70 denotes an end portion that has been processed in the same manner as the pressing portion 69. The end portion 70 and the pressing portion 69 can be reused by providing interchangeable shapes.

6C shows an example in which the pressing portion 84 of the pressing body 71 is formed by bending the main body of the pressing body 71. FIG. Since the pressing portion 84 is formed by bending, a pressing portion having a free curvature can be formed. When it is desirable to bring the cleaning cloth 5 into contact with the surface 8 in a large area, the curvature of the pressing portion 84 is increased, and when it is desirable to bring the cleaning cloth 5 into contact with a small area, the curvature is decreased.

FIG. 11 is a pressing body, and particularly shows another embodiment of the pressing portion. FIG. 11A is an example in which a cylindrical pressing portion 86 is provided on the pressing body 85. The pressing part 86 is formed of rubber or the like. Then, the cleaning cloth can be pressed against the surface 8 using the elasticity of the pressing portion 86.
In FIG. 11B, the pressing body 87 is provided with a semi-cylindrical pressing portion 88. The pressing part 88 is formed of rubber or the like. Compared with A in FIG. 11, it can be used as a pressing portion having a stronger waist while utilizing the elasticity of the material.

FIG. 12 shows another embodiment of the present invention. The pressing body 7 is attached to the rotary shaft 22 and includes a first plate 92 and a second plate 94 having an angle different from that of the first plate 92. In the present embodiment, the first plate 92 is provided substantially perpendicular to the second plate 94. The first plate 92 includes a pressing portion 29, and presses the cleaning cloth 5 against the surface 8 of the roller 6 according to the rotation angle of the rotation shaft 22. At this time, the second plate 94 is separated from the surface 8.

When the rotating shaft 22 rotates in the clockwise direction, the first plate 92 moves to a position indicated by 91. The first plate 92 is separated from the surface 8 at the position shown at 91. The second plate 94 can press the cleaning cloth 5 against the surface 8 as shown at 93 when the first plate 92 is away from the surface 8. The first plate 92 is in contact with the surface 8 of the roller 6 while being inclined in the escape direction, whereas the second plate 94 is in contact with the surface 8 of the roller 6 while being inclined in the biting direction. Touched. Accordingly, the second plate 94 collides with foreign matter on the surface 8 of the roller 6 at a position indicated by 95. The second plate 94 can be used when the foreign matter R needs to be removed in a short time. The rotating shaft 22 can be stopped even at an angle at which both the first plate 92 and the second plate 94 are separated from the surface 8. The first plate 92 and the second plate 94 are urged toward the surface 8 by the torque of the rotation of the rotary shaft 22. If the first plate 92 and the second plate 94 have a spring property, the spring property is also used together. You may force it.

FIG. 13 is an explanatory diagram of a second example of the advance / retreat mechanism of the pressing body 7. In the example shown in FIGS. 1 and 5, as a first example of the advancing / retreating mechanism, the advancing / retreating operation of the pressing body 7 with respect to the roller 6 is performed by the rotation of the pressing body support portion (rotating shaft) 22 that supports the pressing body 7. An example is shown. In the example shown in FIG. 13, the pressing body 7 is attached and detached by moving the pressing body support portion (rotating shaft) 22 that supports the pressing body 7.

Reference numerals

96 and 97 denote guide rails provided on the

base plates

9 and 10. A slide base 98 is movable along the guide rails 96 and 97. Reference numeral 99 denotes an air cylinder attached to the base plate 10. The air cylinder 10 moves the slide base 98.

The pressing body 7 is attached to a pressing body support portion (rotating shaft) 22 that supports the pressing body 7, and the rotating shaft 22 is attached to a slide base 98. As a result, when the air cylinder 99 operates, the pressing body 7 moves forward and backward with respect to the roller 6 as the slide base 98 moves forward and backward. That is, the pressing body 7 moves back and forth with respect to the roller 6 by moving the pressing body support portion (rotating shaft) 22. If the advancing / retreating mechanism of the pressing body 7 by the slide base 98 shown in FIG. 13 is used, the rotating shaft 22 may maintain the angle of the pressing body 7. Therefore, the rotation mechanism of the rotating shaft 22 can be simplified as compared with the example shown in FIGS.

FIG. 14 is an explanatory diagram of a third example of the advance / retreat mechanism of the pressing body 7. In the example shown in FIGS. 1 and 5, as a first example of the advance / retreat mechanism, an example in which the advance / retreat operation of the pressing body 7 with respect to the roller 6 is performed by the rotation of the rotary shaft 22 is shown. In the example shown in FIG. 14, the

base plate

9, 10 is moved in parallel to move the pressing body 7 forward and backward with respect to the roller 6. In FIG. 14, the supply means 3, the winding means 4, the cleaning cloth 5, and the pressing body 7 are attached to the

base plates

9 and 10 as in the first example of the advance / retreat mechanism. Reference numeral 100 denotes a fixed base supported by the rail 11 via a bearing 13. Reference numeral 101 denotes a slide rail attached to the fixed base 100.

The

base plates

9 and 10 are attached to the fixed base 100 so as to be movable along the slide rail 101. Reference numeral 102 denotes an air cylinder attached to the fixed base 100. The air cylinder 102 moves the

base plates

9 and 10 forward and backward with respect to the roller 6. That is, the advancing / retreating mechanism of the pressing body 7 moves the pressing body 7 relative to the roller 6 by moving the pressing body support portion (rotating shaft) 22. In the third example of the advance / retreat mechanism shown in FIG. 14, the entire cleaning unit 2 is retracted as compared with the second example, so that the space between the cleaning unit 2 and the surface 8 of the roller 6 is in the retracted position. The distance can be increased. Therefore, maintenance of the cleaning unit 2 is easy.

FIG. 15 is an explanatory diagram of a fourth example of the advance / retreat mechanism of the pressing body 7. In the example shown in FIGS. 1 and 5, as a first example of the advance / retreat mechanism, an example in which the advance / retreat operation of the pressing body 7 with respect to the roller 6 is performed by the rotation of the rotary shaft 22 is shown. In the example shown in FIG. 15, the cleaning unit 2 rotates in the counterclockwise direction about the shaft 110, thereby moving the pressing body 7 forward and backward with respect to the roller 6. In FIG. 15, 114 is a shaft support block fixed to the fixed base 100. Reference numeral 110 denotes a shaft supported by the shaft support block 114. The

base plates

9 and 10 are supported so as to be rotatable about a shaft 110. Reference numeral 111 denotes an air cylinder attached to the fixed base 100. Reference numeral 112 denotes a rod of the air cylinder 111.

ロッド The rod 112 is expanded and contracted as necessary. With the operation of the air cylinder 111, the

base plates

9 and 10 rotate around the shaft 110, so that the pressing body 7 moves forward and backward with respect to the surface 8 of the roller 6. That is, the pressing body 7 moves forward and backward with respect to the roller 6 by moving the pressing body support portion (rotating shaft) 22. The advantage of the fourth example of the advance / retreat mechanism can stably reproduce the pressing force of the pressing body 7 against the surface 8 of the roller 6 despite the simple structure.

FIG. 16 is an explanatory diagram of a second modification of the pressing body. In FIG. 1, there is one pressing body 7. That is, the cleaning cloth 5 was in contact with the surface 8 of the roller 6 only once. On the other hand, the example shown in FIG. 16 includes a first pressing body 103 and a second pressing body 104. The rotating shaft 105 supports the pressing body 103 in a state inclined in the escape direction, and the rotating shaft 106 supports the pressing body 104 in a state inclined in the escape direction.

The first pressing body 103 and the second pressing body 104 are provided along the circumferential direction of the roller 6. As a result, the cleaning cloth 5 contacts the surface 8 of the roller 6 by the first pressing body 103 at the position indicated by 107, and contacts the surface 8 of the roller 6 by the second pressing body 104 at the position indicated by 108. To do. Therefore, the cleaning cloth 5 contacts twice in the circumferential direction of the surface 8 of the roller 6. Reference numeral 109 denotes a cloth guide, and the cleaning liquid can be supplied from the cloth guide 109. However, even if the cloth guide 109 is omitted, the cleaning cloth 5 can be brought into contact with the surface 8 of the roller 6 more than once by the plurality of

pressing bodies

103 and 104.

In this way, by providing a plurality of pressing bodies, the cleaning cloth 5 can be brought into contact with the surface 8 of the roller 6 a plurality of times, and although the frictional resistance of the cleaning cloth 5 increases, the pressing body escapes from the foreign matter. More complete cleaning is possible while maintaining. Note that the number of pressing bodies may be two, but may be increased to three or more. Even in such a case, if the pressing body is biased toward the surface 8 of the roller 6 while being inclined in the escape direction with respect to the change of the surface 8 of the roller 6 due to the foreign matter R adhering to the surface 8 of the roller 6. The effects of the present invention can be obtained.

DESCRIPTION OF SYMBOLS 1 Roller cleaning apparatus 2 Cleaning unit 3 Supply means 4 Winding means 5 Cleaning cloth 6 Roller 7 Press body 8 Surface 9 of

roller

6, 10 Base plate 11 Rail 22 Rotating shaft 29 Pressing part 39 Cleaning cloth detection sensor 48 Cleaning unit moving motor

Claims

Supply means for supplying a cleaning cloth for wiping the surface of the roller;
Winding means for winding the cleaning cloth supplied from the supply means;
A pressing body that is between the supply means and the winding means and presses the cleaning cloth against the surface of the roller;
A cleaning unit that carries the supply means, the winding means, and the pressing body, and moves along the axial direction of the roller;
The pressing body is biased toward the surface of the roller while being inclined in the escape direction with respect to a change in the surface of the roller, and the cleaning cloth is linearly formed on the surface of the roller in the axial direction. Press to touch,
A roller cleaning device, wherein the width of the cleaning cloth is shorter than the length of the roller.
The pressing body is a long and thin plate attached to a rotating shaft so as to be rotatable, and includes a pressing portion along a longitudinal direction, and the pressing cloth linearly extends the cleaning cloth on the surface of the roller by the pressing portion. The roller cleaning device according to claim 1, wherein the roller cleaning device is pressed.
A plurality of the pressing bodies, each of the plurality of pressing bodies is formed in an elongated plate shape that is rotatably attached to a rotation shaft, and includes a pressing portion along a longitudinal direction. The roller cleaning device according to claim 2, wherein the cleaning cloth is pressed linearly in the axial direction against the surface of the roller at a plurality of positions in a circumferential direction.
The roller cleaning device according to claim 1, wherein a width of the cleaning cloth is longer than a length of the pressing body.
The supply means includes a width direction stabilization mechanism between the pressing body and the supply means,
The roller cleaning device according to claim 1, wherein the width direction stabilizing mechanism prevents the cleaning cloth from being displaced in a width direction of the cleaning cloth.
The width direction stabilizing mechanism is capable of advancing and retracting toward a guide shaft that guides the cleaning cloth, and the cleaning cloth is sandwiched between the guide shaft and the width direction stabilizing mechanism and is not displaced. The roller cleaning apparatus according to claim 5.
The roller cleaning device according to claim 1, wherein the pressing body includes a mechanism that changes a strength of pressing the cleaning cloth against the surface of the roller.
The pressing body is
A first plate that is biased toward the surface of the roller while being inclined in the relief direction with respect to a change in the surface of the roller, and presses the cleaning cloth linearly in the axial direction against the surface of the roller. When,
Secondly, the cleaning cloth is urged toward the surface of the roller in a state of being inclined to bite against the change of the surface of the roller, and the cleaning cloth is brought into contact with the surface of the roller by pressing linearly in the axial direction. Plate and
The first plate and the second plate are selectively biased toward the surface of the roller,
When the first plate is biased toward the surface of the roller, the second plate is biased away from the surface of the roller;
2. The roller cleaning device according to claim 1, wherein when the second plate is urged toward the surface of the roller, the first plate is urged away from the surface of the roller. .
The roller cleaning device according to claim 1, wherein the cleaning unit is movable along the axial direction of the roller, and the moving speed can be changed or stopped at an arbitrary position.
The cleaning unit is movable along the axial direction of the roller and can be stopped, and is reciprocated in small increments while the cleaning cloth is pressed against the roller. 2. The roller cleaning apparatus according to 1.
The roller cleaning device according to claim 1, wherein the cleaning cloth is a microfiber cloth or a cloth containing microfiber.
The roller cleaning device according to claim 11, wherein the cleaning cloth is subjected to a dust-free process that does not generate dust from both ends.
Supply means for supplying a cleaning cloth for wiping the surface of the roller;
Winding means for winding the cleaning cloth supplied from the supply means;
A pressing body between the supply means and the winding means for pressing the cleaning cloth against the surface of the roller;
A cleaning unit that carries the supply means, the winding means, and the pressing body, and moves along the axial direction of the roller;
The pressing body is biased toward the surface of the roller while being inclined in the escape direction with respect to a change in the surface of the roller, and the cleaning cloth is linearly formed on the surface of the roller in the axial direction. The width of the cleaning cloth is shorter than the length of the roller,
The roller cleaning device further includes a cleaning cloth detection sensor that detects a shift of the traveling position of the cleaning cloth in the vicinity of the pressing portion.
The roller cleaning device according to claim 1 or 13, wherein the pressing body moves forward and backward with respect to the roller by moving a pressing body support portion that supports the pressing body.