JP5284546B1 - Roller cleaning device - Google Patents

Abstract

  The cleaning cloth supply section for supplying the cleaning cloth, the cleaning cloth winding section for winding the cleaning cloth, and the pressing unit for pressing the cleaning cloth against the rotating roller (1) are used to clean the roller (1). In the roller cleaning device for cleaning, the moving means for moving the cleaning unit (3) along the longitudinal direction of the roller (1) and the cleaning unit (3) are positioned in the longitudinal direction of the roller (1) ( P), and movement control means for controlling the movement at different movement speeds (V).

Description

  The present invention relates to a roller cleaning device for automatically cleaning a rotating roller used in a film forming apparatus or the like.

In a film forming apparatus for producing and processing a film, a large number of rotating rollers are used. These rollers serve to heat or cool the film and transport the film.
Since the roller of the film forming apparatus directly contacts the product film, the surface of the roller must always be kept clean. If the roller remains dirty with foreign matter, the foreign matter adheres to the film, and the smoothness cannot be maintained, so that a so-called dirty state is obtained. If it does so, the quality of the film as a product will fall. For this reason, it is necessary to periodically stop the operation of the roller of the film forming apparatus and clean the surface of the roller. The worker performs the cleaning work by wiping the surface of the roller with a cleaning cloth or a solvent. Cleaning work by the worker takes time. In addition, since some rollers of the film forming apparatus have high temperature, the cleaning operation of the roller is a dangerous operation as well as safety and hygiene.
Therefore, conventionally, a roller cleaning device for automatically cleaning a roller has been used.

  Patent Document 1 discloses a roller cleaning device for cleaning a roller or the like used in a manufacturing process of a magnetic recording medium, which can be used in a precise film production line. In this roller cleaning device, a cleaning tape is used as a cleaning cloth. The cleaning tape is supplied from the unwinding shaft and is wound on the winding shaft. The cleaning tape is pressed against the calendar roll by an elastic roll. The cleaning tape is narrower than the length of the calendar roll. Therefore, in the roller cleaning device, the unwinding shaft as the cleaning tape supply means, the winding shaft as the cleaning tape winding means, and the elastic roll as the pressing body are integrated with the cleaning tape as the cleaning cloth. The box is accommodated so that the box moves along the calendar roll. That is, since the cleaning cloth is narrow, the full width of the calendar roll cannot be cleaned at once, but the full width of the calendar roll is cleaned by moving the box. The advantage of this cleaning device is that no wiping stains occur when cleaning is completed.

  On the other hand, when a general roller including a calender roll is observed closely along the entire length of the roller, it can be seen that there are a portion with much dirt and a portion with little dirt. In the roller cleaning device described in Patent Document 1, a portion with much dirt and a portion with little dirt are uniformly cleaned. Therefore, when cleaning a non-soiled portion, the cleaning cloth is wasted.

  Patent Document 2 discloses a roller cleaning device for cleaning a roller in a film handling line. Similar to the roller cleaning device described in Patent Document 1, this roller cleaning device uses a cleaning cloth that is narrower than the length of the roller. Then, the entire length of the roller can be cleaned by traversing the cleaning cloth along the roller.

  The roller cleaning device described in Patent Document 2 can finely operate a pressing body that presses the cleaning cloth against the surface of the roller. Then, the pressing body can be pressed against the roller only when the dirty portion of the roller is found or only when the dirt is found. As a result, the cleaning cloth is not wasted even if the roller is dirty.

  However, from the viewpoint of the roller rotation control system, the cleaning operation of the roller cleaning device is a disturbance. As in the roller cleaning device described in Patent Document 2, it is impossible to use a cleaning cloth in contact with a roller because the rotation of the roller is disturbed so that the cleaning cloth does not contact the roller. Further, if a cleaning cloth is put on or separated from the surface of the roller, wiping residue is left on the roller surface. The unwiped area is a portion where foreign matter is collected on the surface of the roller, and is generated in a portion where the cleaning cloth is separated from the roller surface.

  On the other hand, when observing the film forming apparatus, it can be seen that there is a characteristic for each roller in how the rollers become dirty. That is, when focusing on a specific roller, foreign matter adheres irregularly regardless of the position of the surface of the roller, but if observed closely, foreign matter may concentrate on the edge of the film being conveyed. Many. Also, the dirty position varies depending on the width of the film to be conveyed. Further, depending on the role of the roller, there are a part that must be kept particularly clean and a part where a certain amount of dirt is allowed. For example, in the final process of the film transported by a roller, the both ends may be separated and discarded. Rollers for such applications need to keep the central part of the roller focused and clean, and the ends may be somewhat dirty.

Japanese Patent Laid-Open No. 02-028458 JP 2009-269004 A

The conventional roller cleaning device has a problem that the cleaning efficiency is low, for example, it takes time to clean the roller and wastes the cleaning cloth for wiping the surface of the roller.
This is due to the fact that cleaning was performed uniformly without considering the tendency of the roller to become dirty and the cleanliness distribution required for the roller.
An object of the present invention is to realize a roller cleaning device with high cleaning efficiency and economy by performing cleaning in consideration of the tendency of the roller to become dirty and the cleanliness distribution required for the roller.

The roller cleaning device according to the present invention includes a cleaning cloth supply unit that supplies cleaning cloth, a cleaning cloth winding unit that winds the cleaning cloth, and a cleaning unit that includes a pressing unit that presses the cleaning cloth against a rotating roller. In the roller cleaning device to clean,
Moving means for moving the cleaning unit along the longitudinal direction of the roller;
Movement control means for controlling the cleaning unit so that it can move at different movement speeds depending on the position in the longitudinal direction of the roller, and
The movement control means includes a position detection means for outputting position information of the cleaning unit relative to the roller, a pattern setting means for setting a movement pattern of the cleaning unit, a movement pattern set in the pattern setting means, Control means for controlling the cleaning unit to move according to the movement pattern by driving the movement means based on the position information output from the position detection means, and
The control means can control the moving means and the cleaning cloth winding portion of the cleaning unit, and the pattern setting means can move the cleaning unit corresponding to the position in the longitudinal direction of the roller. The pattern and the winding pattern of the cleaning cloth can be set respectively.

Furthermore, the present invention includes the following concept.
(1) The moving pattern set in the pattern setting means has a constant moving speed of the cleaning unit, and the cleaning cloth winding pattern has a cleaning cloth winding speed that is a part of the longitudinal direction of the roller. Be fast in the range and slow in some other ranges.
(2) The movement pattern set in the pattern setting means is such that the moving speed of the cleaning unit is fast in a part of the longitudinal direction of the roller and slow in the other part of the roller. The pattern has a constant winding speed of the cleaning cloth.
(3) The movement pattern set in the pattern setting means is such that the moving speed of the cleaning unit is fast in a part of the longitudinal direction of the roller and slow in the other part of the roller, and the cleaning cloth is wound. The take-up pattern is such that the winding speed of the cleaning cloth is fast in a part of the longitudinal direction of the roller and slow in the other part of the range. (4) The control means is based on the rotational speed of the roller. , Controlling the moving means.
(5) The control means increases the moving speed of the cleaning unit when the rotation speed of the roller is high, and decreases the moving speed when the rotation speed is low.
(6) The control means controls the moving means and the winding unit based on the rotation speed of the roller.
(7) The control unit can control the moving unit, the cleaning cloth winding unit and the pressing unit of the cleaning unit, and the pattern setting unit can control the position of the roller in the longitudinal direction. The movement pattern of the cleaning unit, the winding pattern of the cleaning cloth, and the pressing pattern of the pressing portion can be set.

  According to the present invention, when the moving speed of the cleaning unit is increased or decreased according to the position in the longitudinal direction of the roller of the cleaning unit, when foreign matter is frequently attached to a specific part of the roller, that is, the roller It is possible to perform optimum cleaning even when there is unevenness in the attachment of foreign matter or when there is a large amount of foreign matter attached near both ends of the film. As a result, a roller cleaning device is realized in which the cleaning efficiency is improved and the cleaning time and the consumption of the cleaning cloth can be saved.

FIG. 1 is a block diagram of the first embodiment. FIG. 2 is a side view of the cleaning unit. FIG. 3 is an explanatory diagram for explaining the relationship between the dimensions of the respective parts. FIG. 4 is an explanatory diagram for explaining setting of the movement pattern. FIG. 5 is an explanatory diagram for explaining an example of the movement pattern. FIG. 6 is an explanatory diagram for explaining a combination of movement pattern and feed pattern settings. FIG. 7 is a block diagram of the third embodiment. FIG. 8 is an explanatory diagram for explaining a fourth embodiment.

In the present invention, considering the tendency of the roller to become dirty and the distribution of cleanliness required for the roller, the moving speed, moving range, cleaning cloth winding and cleaning of the cleaning unit moved along the longitudinal direction of the roller are considered. By combining the position information of the cleaning unit relative to the roller with the conditions related to the pressing of the cloth, the movement pattern, winding pattern, and pressing pattern of the cleaning unit are set, and the cleaning unit is controlled based on the position of the cleaning unit, and Control is based on the detected rotational speed of the roller.
Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment]
FIG. 1 is a block diagram of a first embodiment of the present invention. Reference numeral 1 denotes a roller to be cleaned. Reference numeral 2 denotes a film conveyed by the roller 1. 3 is a cleaning unit. The cleaning unit 3 is disposed adjacent to the roller 1. 4 is a moving means for reciprocating the cleaning unit 3 along the longitudinal direction of the roller 1. Reference numeral 271 denotes movement control means. The movement control means 271 controls the movement of the cleaning unit 3 relative to the roller 1 by controlling the movement of the movement means 4. The movement control means 271 can vary the moving speed of the cleaning unit 3 depending on the position of the cleaning unit 3 with respect to the longitudinal position of the roller 1. Reference numeral 5 denotes position detecting means for outputting position information of the cleaning unit 3 moved by the moving means 4. Reference numeral 6 denotes a drive pulley of the moving means 4, and reference numeral 7 denotes a detection pulley of the position detection means. A belt 8 is suspended between the drive pulley 6 and the detection pulley 7 along the longitudinal direction of the roller 1, and the belt 8 is also moved when the moving means 4 is operated. The cleaning unit 3 and the belt 8 are coupled so as not to be displaced from each other. As a result, when the moving means 4 operates, the drive pulley 6 rotates and the cleaning unit 3 moves along the longitudinal direction of the roller 1. As the belt 8 moves, the detection pulley 7 also rotates. The position detection means 5 is integrated with the detection pulley 7 and outputs position information relative to the origin of the cleaning unit 3 with a specific position in the longitudinal direction of the roller 1 (for example, the left end of the roller 1) as the origin. 26 is a pattern setting means, and 27 is a control means. The pattern setting unit 26 sets the movement pattern of the cleaning unit 3. The control unit 27 inputs the output information from the position detection unit 5 and the pattern setting unit 26 and controls the moving unit 4. The movement control unit 271 can be configured by the position detection unit 5, the pattern setting unit 26, and the control unit 27.

  1 shows an example in which the position detecting means 5 is provided independently of the moving means 4 for the sake of explanation. However, the position of the cleaning unit 3 can be determined by the number of pulses of the pulse signal output from the control means 27, such as a stepping motor, as the driving source used for the moving means 4. In that case, it is possible to virtually form the position detecting means 5 by providing means for counting pulses in a part of the control means 27. Further, the moving speed of the cleaning unit 3 does not have to have a one-to-one correspondence with respect to the position of the cleaning unit 3 in the longitudinal direction of the roller 1. For example, the moving speed at the first cleaning and the moving speed at the second cleaning can be changed. Further, if a dirt sensor for detecting dirt on the surface of the roller 1 is provided, the moving speed can be partially reduced or temporarily stopped until the dirt is eliminated. The moving speed that achieves the object of the roller cleaning device according to the present invention is preferably moved at various moving speeds according to the nature of the dirt on the roller 1.

  FIG. 2 is a side view of the cleaning unit 3. Reference numeral 11 denotes a frame of the cleaning unit 3. The frame 11 carries the basic configuration of the cleaning unit 3. Reference numeral 12 denotes a fixed rail. The fixed rail 12 is fixed to the same base (not shown) together with the roller 1 along the longitudinal direction of the roller 1, and supports the frame 11 of the cleaning unit 3 through the block 13 so as to be movable. The belt 8 is fixed to the frame 11 by a clamp 14. When the driving pulley 6 is rotated by the driving means 4, the belt 8 moves and the cleaning unit 3 moves on the fixed rail 12.

  9 is a cleaning cloth. A cleaning cloth supply unit 10 supplies the cleaning cloth 9. Reference numeral 15 denotes a cleaning cloth winding unit that winds the cleaning cloth 9. The cleaning cloth 9 is supplied from the supply unit 10 and is wound up by the winding unit 15. The supply unit 10 includes a brake mechanism 21 that applies tension to the cleaning cloth 9. The winding unit 15 includes a winding motor 22. The winding motor 22 winds up the cleaning cloth 9. The cleaning cloth 9 travels in the direction indicated by the traveling direction 25 when it is wound by the winding unit 15. The roller 1 rotates in the direction indicated by the rotation direction 24.

  Reference numeral 16 denotes a pressing portion. The pressing unit 16 is disposed between the supply unit 10 and the winding unit 15 and presses the cleaning cloth 9 against the surface 23 of the roller 1 as necessary. The pressing portion 16 includes a pressing blade 18 attached to the rotating shaft 17. The rotary shaft 17 is driven by a drive cylinder 20 via an arm 19. When the drive cylinder 20 operates, the rotary shaft 17 rotates clockwise or counterclockwise. In accordance with the rotation of the rotating shaft 17, the pressing blade 18 rotates. The pressing blade 18 rotates counterclockwise in FIG. 2 and presses the cleaning cloth 9 against the surface 23 of the roller 1. The state shown in FIG. 2 shows a state where the pressing blade 18 presses the cleaning cloth 9 against the surface 23 of the roller 1. Further, when the pressing blade 18 rotates in the clockwise direction of FIG. 2, the cleaning cloth 9 is separated from the surface 23 of the roller 1.

  FIG. 3 is an explanatory diagram showing the relationship between the length of the roller 1, the width of the film 2, the length of each part such as the effective width of the cleaning cloth 9, and the positional relationship of the cleaning unit 3 with respect to the longitudinal direction of the roller 1. RL is the length of the roller 1. FW is the width of the film 2. The width FW of the film 2 is shorter than the length RL of the roller 1. CW is an effective width of the cleaning cloth 9 of the cleaning unit 3. The effective width CW of the cleaning cloth 9 is a width in which the cleaning cloth 9 is pressed against the surface 23 of the roller 1 by the pressing blade 18 and may be narrower than the actual width of the cleaning cloth 9. In this case, when the pressing blade 18 presses the cleaning cloth 9 against the surface 23 of the roller 1, the width of the cleaning cloth 9 is made wider than the pressing blade 18 so that the pressing blade 18 does not directly contact the roller 1. The cleaning cloth 9 completely covers the pressing blade 18. In this case, the effective width CW of the cleaning cloth 9 is not an actual width of the cleaning cloth 9 but a width by which the cleaning cloth 9 is pressed against the roller 1 by the pressing blade 18.

  The coordinates of P0 to P10 are position coordinates corresponding to the length RL of the roller 1. And the position of P0-P10 respond | corresponds to the center position of the cleaning cloth 9 of the cleaning unit 3. FIG. The cleaning unit 3 moves from P0 to P10 as a moving range in the cleaning operation. The position P0 corresponds to the center position of the effective width CW of the cleaning cloth 9 when the cleaning unit 3 is at the left end position, and the position P10 is the cleaning cloth when the cleaning unit 3 is at the right end position. 9 corresponds to the center position of the effective width CW. Further, P0 and P10 are equally divided into 10 equal intervals, and are set to position coordinates from P1 to P9, respectively. The position setting may be a position corresponding to the length RL of the roller 1, and the coordinate interval may be narrower or wider than the example of FIG. The value of the position coordinate can be obtained as a value output from the position detection means 5.

  FIG. 4 is an explanatory diagram of the movement pattern set in the pattern setting means 26. The cleaning unit 3 moves between position coordinates P0 to P10 along the longitudinal direction of the roller 1. Table 28 is an example of the setting value of the movement pattern set in the pattern setting means 26. The setting value of the movement pattern is 2 of the value of the position coordinate P and the value of the moving speed V of the cleaning unit 3 at that position. One set is set. The relationship between the position coordinate P and the moving speed V is expressed by the coordinates of a two-dimensional graph. 29 is the graph. Moreover, the control means 27 controls the cleaning unit 3 based on the value of the moving direction of the cleaning unit 3, and the cleaning unit 3 first departs from P0 in the right direction, proceeds P1, P2, and reaches P10. Next, after reaching P10, the cleaning unit 3 departs from P10 to the left, proceeds P9, P8, and reaches P0.

  In Table 28, the movement pattern is expressed by 11 sets of values such as (P0, V0), (P1, V1), (P2, V2),. The pattern setting means 26 can hold these values in a read-only memory, or can set individual values with switches. The control means 27 knows the current position of the cleaning unit 3 based on the output of the position detection means 5, and controls the movement means 4 with reference to the movement pattern set in the pattern setting means 26.

  The graph 29 shows the value of the moving speed V on the vertical axis and the value of the position coordinate P on the horizontal axis. As shown in Table 28, when V = 0 is set for P0, P1, P9, and P10, V = 3 is set for P3, P4, P7, and P8, and V = 4 is set for P4, P5, and P6, the cleaning unit 3 is As shown in graph 29, the movement speed is slow at the position coordinates of P0 and P10, and the movement speed is high at the position coordinates of P4, P5, and P6. That is, the moving speed of the central portion of the roller 1 is higher than the moving speed of both end portions of the roller 1.

  Even if the movement pattern set in the pattern setting unit 26 is set as a discrete value as shown in Table 28, the control unit 27 performs cleaning (smoothing) within a controllable range for cleaning. It is desirable that the unit 3 moves smoothly. The movement pattern 30 is an example in which the set value of the movement pattern set in Table 28 is smoothed. When smoothing is performed, the cleaning unit 3 smoothly moves from P0 to P10 or from P10 to P0 along the line of the movement pattern 30. The cleaning unit 3 moves slowly at the positions P0 and P10 and increases at the position P5.

  When the rotational speed of the roller 1 is constant, when the moving speed of the cleaning unit 3 is slow, the cleaning cloth 9 will be in contact with the same part of the roller 1 for a long time, and when the moving speed of the cleaning unit 3 is fast, The cleaning cloth 9 contacts the same part of the roller 1 for a short time. In the example set in Table 28, the movement pattern is such that the cleaning cloth 9 is pressed at both ends of the roller 1 for a long time and the center portion of the roller 1 is pressed for a short time. This is a movement pattern suitable for the case where there is unevenness in the adhesion of foreign matters on the roller 1 in FIG.

  FIG. 5 is another example of the movement pattern set in the pattern setting means 26. The movement pattern 31 is set so that the moving speed of the cleaning unit 3 from P1 to P4 is fast and the moving speed of the cleaning unit 3 from P5 to P10 is slow. That is, the moving speed of the cleaning unit 3 is fast in a part of the roller 1, and the moving speed of the cleaning unit 3 is slow in the other part. This is suitable when there is a large amount of foreign matter adhering to portions corresponding to P5 to P10 of the roller 1. The movement pattern 32 is set from P2 to P8. This shows a case where the cleaning unit 3 is moved only between P2 and P8. That is, the cleaning unit 3 is controlled by the control means 27 so as to move between arbitrary positions based on the movement pattern.

[Second Embodiment]
As shown in FIG. 1, as a second embodiment, the control unit 27 can control not only the moving unit 4 but also the drive cylinder 20 and the winding motor 22 of the cleaning unit 3. A partial cleaning operation can be performed by controlling the drive cylinder 20. That is, in FIG. 3, for example, when the cleaning unit 3 moves between P0 and P10, the cleaning operation is performed only at the portions P0, P1 and P9, P10, and the cleaning operation is not performed between P2 and P8. Can be.

  Further, the winding pattern of the cleaning cloth 9 can be controlled by controlling the winding motor 22. If the winding motor 22 is controlled, the winding speed of the cleaning cloth 9 is set as the winding pattern in the pattern setting means 26 in association with the coordinate position of the cleaning unit 3 in the same manner as the movement pattern of the cleaning unit 3. can do.

  FIG. 6 shows an example in which the movement speed V (movement pattern) of the cleaning unit 3 and the winding speed S (winding pattern) of the cleaning cloth 9 are set in the pattern setting means 26 in association with the coordinate position P.

  In the example shown in FIG. 6A, the movement pattern changes the movement speed V with respect to the coordinate position P, and the winding pattern has a winding speed S that is constant at S = 2 with respect to the coordinate position P. In the example of FIG. 6A, the winding speed S is constant regardless of the moving speed V, so that the consumption of the cleaning cloth 9 can be easily managed.

In the example shown in FIG. 6B, the movement pattern changes the movement speed V with respect to the coordinate position P in the same manner as the example of FIG. 4, and the winding pattern also changes the winding speed S. The winding speed S is a pattern opposite to the movement pattern of the movement speed V. That is, when the moving speed V of the cleaning unit 3 is low, the winding speed S of the cleaning cloth 9 is increased, and when the moving speed V is high, the winding speed S is decreased. In the example of the movement pattern (movement speed V) and the winding pattern (winding speed S), the adhesion tendency of the foreign matter on the roller 1 is not uniform over the entire length of the roller 1, for example, concentrated on the end portion of the film 2. When there is a tendency, the cleaning capability of the cleaning cloth 3 can be effectively utilized.
At the position where the moving speed V is slowed, foreign matter adheres to the roller 1, and the amount of foreign matter to be captured by the cleaning cloth 9 is also large. Therefore, at a position where the moving speed V is slow, it is necessary to increase the winding speed S of the cleaning cloth 9 and increase the winding length per unit time. Further, at the position where the moving speed V is increased, the adhesion of foreign matter to the roller 1 is small, and the amount of foreign matter to be captured by the cleaning cloth 9 is small. Accordingly, at the position where the moving speed V is fast, the winding speed S of the cleaning cloth 9 can be slowed down.

  In the example shown in FIG. 6C, the movement pattern has a constant movement speed V of V = 3, and the winding pattern has the winding speed S changed. When the distribution of the adhesion of the foreign matter to the surface 23 of the roller 1 is not uniform over the entire length of the roller 1 and a large amount adheres near both ends of the film 2, the cleaning cloth 9 is wound around P0, P1 or P9, P10. The speed S is increased, and the winding speed S is decreased in the vicinity of P4, P5, and P6. On the other hand, by making the moving speed V uniform over the entire length of the roller 1, the wiping time interval is constant in any part of the roller 1, and management of the wiping state becomes easy. Therefore, it is possible to easily manage the wiping state while fully using the cleaning ability of the cleaning cloth 9.

[Third Embodiment]
FIG. 7 shows a third embodiment, in which the control means 27 refers to the rotational speed of the roller 1. Reference numeral 271 denotes movement control means for driving the movement means 4. Reference numeral 33 denotes a rotation speed detecting means for detecting the rotation speed of the roller 1. The rotation speed detection means 33 outputs the rotation speed R of the roller 1. The control means 27 refers to the rotational speed R and controls the moving means 4 and the winding motor 22. For example, in the movement pattern shown in FIG. 4 (movement speed V), when the rotation speed R is R = 1.0, the movement speed from P0 to P10 is (2, 2, 3, 3, 4). 4, 4, 3, 3, 2, 2). Therefore, when the rotational speed decreases to R = 0.5, the control means 27 determines that the moving speed V from P0 to P10 is (1, 1, 1.5, 1.5, 2, 2, 2, The movement means 4 is controlled by changing the movement pattern so as to be 1.5, 1.5, 1, 1). That is, the control means 27 refers to the rotation speed of the roller 1 and changes the movement pattern (movement speed V).

  If the control means 27 refers to the rotation speed of the roller 1, even if the rotation speed of the roller 1 changes, the cleaning effect equivalent to that before the change can be obtained. Moreover, the winding speed S (winding pattern) can also be changed with the change of the moving speed V (moving pattern) as needed. The change in the movement speed V (movement pattern) or the change in the winding speed S (winding pattern) with respect to the change in the rotation speed R does not have to be equal. The ratio is set while observing the state of foreign matter adhering to the roller 1 and the cleaning effect.

[Fourth Embodiment]
FIG. 8 is an explanatory view showing a fourth embodiment. FIG. 8A is an example of a moving pattern, a winding pattern, and a pressing pattern set in the pattern setting means 26, and V is the moving speed of the cleaning unit 3 with reference to the position coordinate P in the longitudinal direction of the roller 1. Yes, S is the winding speed of the cleaning cloth 9, and M is the presence or absence of pressing of the pressing portion 16. The presence / absence of pressing M was indicated by M = 1 when the cleaning cloth 9 was pressed against the roller 1 and M = 0 when the cleaning cloth 9 was released from the roller 1. That is, in the example of FIG. 8A, the cleaning unit 3 presses the cleaning cloth 9 against the roller 1 with P0, P1, P2, and P8, P9, P10, and the cleaning cloth 9 with the rollers P3, P4, P5, P6, P7. Separate from 1. The cleaning unit 3 does not perform cleaning while the cleaning cloth 9 is away from the roller 1. Therefore, from P3 to P7, the movement pattern can be set so that the cleaning unit 3 moves at a high speed, and the winding pattern can prevent the cleaning cloth 9 from being wound. it can.

  FIG. 8B is a graph showing an example of setting to the pattern setting unit 26 described with reference to FIG. 8A. Reference numeral 34 denotes a movement pattern (movement speed V), reference numerals 35 and 36 denote a winding pattern (winding speed S), and reference numerals 37 and 38 denote pressing patterns (pressing presence / absence M). As shown in FIG. 8B, the cleaning of the roller 1 by the cleaning unit 3 is performed at P0, P1, P2, and P8, P9, P10. In P3, P4, P5, P6, and P7 where cleaning is not performed, the cleaning unit 3 moves at a high speed and the winding of the cleaning cloth 9 is stopped. The example shown in FIGS. 8A and 8B is a pattern suitable for intensively cleaning a portion near both ends of the roller 1, and the cleaning unit 3 moves at high speed and is wasteful in a portion where cleaning is not performed. The cleaning cloth 9 is not taken up.

  In the pattern set in the pattern setting means 26, the position coordinates are set by dividing from P0 to P10. However, the position coordinates may be further divided and set. If the length of the roller 1 is short, It may be set by dividing by a small number. The pattern set in the pattern setting means 26 is useful because it can be easily reproduced as a basic pattern even if the pattern is changed by switching a plurality of predetermined patterns. In addition, if the value can be manually changed partially temporarily, a flexible pattern can be set. For example, in the example of FIG. 8A, the basic values of the movement pattern (movement speed V) are (P8: V = 3), (P9: V = 2), (P10: V = 2). If there is much foreign matter adhering, it can be temporarily changed to (P8: V = 3), (P9: V = 1), (P10: V = 1). In addition, regarding the pattern set in the pattern setting means 26, different patterns can be set for the movement of the cleaning unit 3 between the forward path from P0 to P10 and the return path from P10 to P0.

  As shown in FIG. 8, when the cleaning cloth 9 is pressed against the surface of the roller 1 or when the cleaning cloth 9 is removed from the roller 1, the cleaning cloth 9 is removed from the surface of the roller 1. There may be a case where the wiping residue is left on the surface of the roller 1 at a location away from the surface. This unwiping is a phenomenon in which the cleaning cloth 9 captures foreign matter on the surface of the roller 1, but the amount exceeding the foreign matter holding ability of the cleaning cloth 9 remains on the surface of the roller 1. That is, the foreign matter that cannot be held by the cleaning cloth 9 remains on the surface of the roller 1 where the cleaning cloth 9 is away from the surface of the roller 1. However, if the cleaning cloth winding operation is not stopped when the cleaning cloth 9 moves away from the surface of the roller 1, the remaining wiping can be reduced. This is because when the cleaning cloth 9 moves away from the surface of the roller 1, there is a margin in the foreign matter capturing ability of the cleaning cloth 9. It is reasonable to determine the individual values and timing at that time by observing the phenomenon and repeating the experiment. It is desirable that the movement pattern (movement speed V), the winding pattern (winding speed S), and the pressing pattern (pressing presence / absence M) shown in FIG. 8A can be set individually.

DESCRIPTION OF SYMBOLS 1 Roller 2 Film 3 Cleaning unit 4 Moving means 5 Position detection means 6 Drive pulley 7 Detection pulley 8 Belt 9 Cleaning cloth 10 Cleaning cloth supply part 11 Frame 12 Fixed rail 13 Block 15 Cleaning cloth take-up part 16 Press part 18 Press blade 19 Arm 20 Drive cylinder 21 Brake mechanism 22 Winding motor 26 Pattern setting means 27 Control means 271 Movement control means

Claims (8)

In a roller cleaning device that cleans the roller by a cleaning unit that includes a cleaning cloth supply unit that supplies a cleaning cloth, a cleaning cloth winding unit that winds up the cleaning cloth, and a pressing unit that presses the cleaning cloth against a rotating roller.
Moving means for moving the cleaning unit along the longitudinal direction of the roller;
Movement control means for controlling the cleaning unit so that it can move at different movement speeds depending on the position in the longitudinal direction of the roller,
The movement control means includes a position detection means for outputting position information of the cleaning unit relative to the roller, a pattern setting means for setting a movement pattern of the cleaning unit, a movement pattern set in the pattern setting means, Control means for controlling the cleaning unit to move according to the movement pattern by driving the movement means based on the position information output from the position detection means, and
The control means can control the moving means and the cleaning cloth winding portion of the cleaning unit, and the pattern setting means can move the cleaning unit corresponding to the position in the longitudinal direction of the roller. A roller cleaning device, wherein a pattern and a winding pattern of the cleaning cloth can be respectively set.   The movement pattern set in the pattern setting means has a constant movement speed of the cleaning unit, and the cleaning cloth winding pattern has a cleaning cloth winding speed in a range in a part of the longitudinal direction of the roller. 2. The roller cleaning device according to claim 1, wherein the roller cleaning device is fast and slow in some other range.   The movement pattern set in the pattern setting means is such that the moving speed of the cleaning unit is fast in a part of the longitudinal direction of the roller and slow in the other part of the roller. The roller cleaning apparatus according to claim 1, wherein a winding speed of the cleaning cloth is constant.   The moving pattern set in the pattern setting means is such that the moving speed of the cleaning unit is fast in a part of the longitudinal direction of the roller and slow in the other part of the roller, and the winding pattern of the cleaning cloth is The roller cleaning device according to claim 1, wherein a winding speed of the cleaning cloth is fast in a part of the longitudinal direction of the roller and slow in another part of the roller.   The roller cleaning apparatus according to claim 1, wherein the control unit controls the moving unit based on a rotation speed of the roller.   The roller cleaning according to claim 5, wherein the control unit increases the moving speed of the cleaning unit when the rotation speed of the roller is high, and decreases the moving speed when the rotation speed is low. apparatus.   The roller cleaning apparatus according to claim 1, wherein the control unit controls the moving unit and the winding unit based on a rotation speed of the roller.   The control unit can control the moving unit, the cleaning cloth winding unit and the pressing unit of the cleaning unit, and the pattern setting unit can control the position of the cleaning unit in the longitudinal direction of the roller. The roller cleaning device according to claim 1, wherein a moving pattern, a winding pattern of the cleaning cloth, and a pressing pattern of the pressing portion can be set.

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