WO2003000436A1 - Scraper for rotary brush and blanket drum cleaning device - Google Patents

Abstract

A scraper (14) for rotary brush, wherein a plurality of scraping parts (23) are spirally provided on the peripheral surface of a shaft body (22a) and brought into point-contact with a rotary brush (13) to scrape off deposit adhered onto the rotary brush (13), whereby, since the contact between the scraping parts (23) and the rotary brush (13) is a point contact, the wear of the rotary brush (13) and a load on a mechanism for drivingly rotating the rotary brush (13) can be reduced, strictness for bringing the scraper (14) for rotary brush into uniform contact with the rotary brush (13) through the overall length can be relaxed, and the positional relation between the rotary brush (13) and the scraper (14) for rotary brush can be adjusted easily.

Description

 Screen rotation for bright rotating brushes and blanket body cleaning

Technical field

 The present invention provides a rotating brush scraper that removes the attachment of the rotating brush, and a field that cleans the thread blanket cylinder.

 Related to blanket cylinder cleaning equipment. Back technique

 In the United States, the blanket cylinder cleaning device that cleans the blanket cylinder of a printing press uses a rotating brush that rotates on the surface of the blanket cylinder. , The cleaning solution is applied to the rotating brush, and the rotating brush is attached to the blanket cylinder while rubbing the blanket cylinder. Lux ゃ Adhering substances such as paper dust are being removed.

 A plate-shaped screen is applied to the rotating brush over the entire length of the rotating brush by a line or a plane, and the plate-shaped screen is contacted. Deposits such as ink and paper dust adhering to the rotating brush with the crane are removed by contacting.

However, in the conventional blanket cylinder cleaning device, a plate-shaped scraper has a line or surface extending over the entire length of the rotating brush. The contact with the rotating brush increases the degree of wear of the rotating brush, and it also affects the rotating brush. There is a problem that the load increases B and the load on the drive mechanism that rotates the rotating brush also increases.

 Also, taking into account the fact that the rotating brush is bent during the cleaning operation, the plate-shaped scraper contacts the entire length of the rotating brush evenly. However, since the rotating brush is long in the axial direction, a plate-shaped screen is required for the entire length of the rotating brush. There is a problem that is difficult to adjust so that the paper contacts evenly.

 The present invention reduces the wear on the rotating brush and the load on the means for rotating the rotating brush, and reduces the entire length of the rotating brush. The purpose of the present invention is to provide a screen brush for a rotating brush and a cleaning device for a blanket cylinder, which can easily adjust contact with a rotating brush. . Disclosure of the invention

 The rotating brush scraper of the present invention is a spiral brush which is spirally mounted around the scraper body and the scraper body. It is provided with a take-off section for receiving the kimono attached.

Then, according to this configuration, the spiral cutting portion comes into point contact with the rotating brush to contact the rotating brush with the adhered matter, so that the spiral cutting portion can be attached to the rotating brush with a line or surface. Compared to a plate-shaped screen that comes in contact, the wear of the rotating brush and the load on the means for rotating and rotating the rotating brush can be reduced. In addition, equalize the scraper for the rotating brush over the entire length of the rotating brush. The strictness of contact with the rotating brush is relaxed, and the positional relationship with the rotating brush can be easily adjusted.

 Further, in the rotating brush scraper of the present invention, the scraper body has a cylindrical shaft body, and the cut-out portion has the same shape as the shaft body. It is helically protruding from the periphery.

 In addition, with this configuration, since the cut-out portion is helically protruded on the peripheral surface of the shaft body, it is easy to set the amount of protrusion of the cut-out portion from the shaft body. Wear .

 In the scraper for a rotating brush according to the present invention, the cut-out portions are provided at a plurality of positions in the circumferential direction of the shaft at equal intervals. However, it is installed around the shaft multiple times.

 According to this configuration, the mounting portion is provided at a plurality of positions in the circumferential direction of the shaft at equal intervals, and a plurality of rounds are formed around the shaft. The point of contact with the rotating brush is point contact, so that the connection effect can be enhanced.

 In the screen brush for a rotating brush according to the present invention, the cut-out portion is formed in a spiral shape by twisting the screen body. It is something.

In addition, with this configuration, the scraper body is twisted and processed to form a cut-out portion, and therefore, a rotating blade having a spiral cut-out portion is formed. Scrapers for sieves can be easily manufactured. Also, the screen brush for the rotating brush of the present invention. In, the chamfered portion is provided at each of the vertices of a spiral formed by screwing and processing the cross-sectioned polyhedral scriber body. It is a thing.

 Then, according to this configuration, a multi-sided scraper body having a cross section is screwed and processed to form a spiral at each of the apexes of the polygon. Because of this, a scraper for a rotary brush having a spiral cut-out part can be easily manufactured.

 Further, the blanket cylinder cleaning device of the present invention is a device for removing the attached matter of the blanket cylinder by contact with the blanket cylinder. A rotating brush, a rotating brush rotating driving means for rotating and rotating the rotating brush, a screen brush for rotating brush described above, and a rotating brush; It is provided with a scraper rotating drive means for rotating the screen brush for the rotating brush.

With this configuration, it is possible to use the aforementioned screen brush for rotating brush and not to rotate the scraper for rotating brush. To remove and remove the material attached to the rotating brush, so that the rotating brush is less worn and worn than a plate-shaped scraper that comes in contact with a wire or surface. The load applied to the rotating brush rotating drive means for rotating the rotating brush can be reduced, and the total length of the rotating brush can be reduced. The strictness of evenly contacting the scraper for the rotating brush to the area has been relaxed, and the adjustment of the positional relationship with the rotating brush has been facilitated. it can .

 Further, the blanket cylinder cleaning device of the present invention is provided with a rotating brush shaft moving means for moving the rotating brush forward and backward in the axial direction. It is something.

 In addition, with this configuration, the rotating brush is reciprocated in the axial direction, so that the rotating brush can easily clean the bracket body. It can be removed and a screen brush for the rotating brush. This makes it possible to easily attach the rotating brush attached to the kimono, thereby improving the cleaning efficiency. Brief description of the drawings

 Fig. 1 shows a first embodiment of the present invention, showing a rotating brush of a blanket body washing and cleaning device and a scraper for the rotating brush. FIG. 2 (a) is a front view of a rotary brush screen S, and FIG. 2 (b) is a plan view with a part of the plan view cut away. 2 Fig. (A) is an enlarged cross-sectional view of A-A, Fig. 3 is a side view of the blanket cylinder cleaning device, and Fig. 4 is a blanket. FIG. 5 is a plan view in which a part of the body washing device is cut out, FIG. 5 shows a mode of the second embodiment of the present invention, and FIG. Fig. 5 (b) is an enlarged cross-sectional view of the rotating brush scraper. Best mode for carrying out the invention

Hereinafter, embodiments of the present invention will be described with reference to the drawings. You

 FIG. 1 to FIG. 4 show the first embodiment. FIG. 3 shows a blanket cylinder B. The blanket cylinder B is used for an offset printing press and has a cylindrical shape. It is formed to be long in the axial direction, and is driven to rotate in the direction of arrow a in FIG.

 FIG. 3 shows a blanket cylinder cleaning device 11 for cleaning the blanket cylinder B, and the blanket cylinder cleaning device 11 is used for cleaning the blanket cylinder B. The device main body 12 has a rotating brush 13 for removing the deposits on the bracket cylinder B, and a rotating brush 1 for rotating the brush body 1. The cleaning liquid for the rotating brush (hereinafter referred to as “screenno”) that removes the deposits from step 3 (hereinafter referred to as “screenno”) 1 4 and the cleaning brush 13 The cleaning liquid supply means 15 to be supplied is provided.

 The device body 12 supports the rotating brushes 13 and the screen brush 14 for the rotating brushes in a rotationally self-supporting manner. An opening 18 from which a part of the rotating brush 13 protrudes is formed in the can 17.

As shown in FIG. 1, FIG. 3 and FIG. 4, the rotating brush 13 has a length substantially the same as the axial length of the bracket body B. It is formed in a cylindrical shape, and has a core body 19 and a plurality of brush hairs 20 protruding from the outer peripheral surface of the core body 19. The core 19 is formed of a rigid material such as synthetic resin or metal, for example, and is formed in a cylindrical shape having both ends open. The brush hair 20 is, for example, nylon (Trade name) It is composed of elastic and soft thread material such as chemical fiber. The rotating brush 13 has both ends supported by the rotating body itself with respect to the device main body 12, and is provided on the device body 12 side. The rotation driving means 21 selectively drives the rotation of the peripheral surface of the bracket body B in the same direction b as the rotation direction a or in the opposite direction c.

 As shown in FIG. 1 or FIG. 3, the screen 14 is made of a metal such as aluminum, for example, and is oriented in the axial direction of the rotating brush 13. It has a cylindrical shaft body 22a, which is a scraper body 22 formed substantially the same as or longer than the length. On the peripheral surface of the shaft 22a, a plurality of strips 23 projecting integrally from the shaft 22a are formed in a spiral shape. The take-up part 23 has, for example, four ridges and is wound around the shaft 22a a plurality of times, for example, four times, around the shaft 22a at equally spaced positions in the circumferential direction of the shaft 22a. Yes. Further, each chamfered portion 23 is substantially rectangular in cross section, and the corner portion is chamfered and formed into, for example, a curved surface having a radius of 1 mm or less. A groove 24 is spirally formed between the chamfers 23 on the peripheral surface of the shaft 22a.

Then, in order to manufacture the shaft 22a having the spiral cut portion 23, for example, a shaft 22a having a plurality of cut portions 23 parallel to the axial direction is required. After being formed by extrusion molding, the shaft portion 22a is twisted in the circumferential direction around the axis of the shaft body 22a, so that the removing portion 23 is formed. There is a method of forming a spiral. Shaft portions 25, 26 are fixed to both ends of the shaft body 22 a, and the shaft portions 25, 26 are rotatably supported on the device body 12 by the shaft portions 25, 26. Either of the shaft portions 25 and 26 is driven to rotate by a scraper driving device 27 disposed on the device body 12 side. It is. The rotation direction of the screen and the degree 14 is set to be opposite to the rotation direction of the rotation brush 13. The device body 12 has a lower part of the screen 14 for collecting the deposits removed from the rotating brush 13 by the screener 14 (not shown). A lens is provided.

 As shown in FIG. 3, the cleaning liquid supply means 15 is arranged along the axis of the rotating brush 13 so as to face the rotating brush 13. A cleaning liquid having a plurality of nozzles 28 and being sent from a cleaning liquid pressure feeding means (not shown) is blown from each nozzle 28 to the rotating brush 13.

Further, as shown in FIG. 4, the device main body 12 has a frame 32, and side frames 33, 34 are provided on both sides of the frame 32. These side frames 33 and 34 are connected to each other by a plurality of connecting members 35. Bearings 36 and 37 are arranged on the inner surfaces of the side frames 33 and 34 opposite to each other on the same axis, and these bearings 36 and 37 are respectively provided with shafts 38 and 37. The outer end of the shaft 39 is rotatably supported on the same axis, and the shaft is supported on its own. Joining portions 40 and 41 that are inserted from both ends and joined are formed on the inner side of the core body 19 of the pusher 13 and are laid. That is, the rotating brush 13 and the shaft bodies 38 and 39 are aligned on the same axis and rotate together. It is possible.

 — An axial guide 43 having an annular groove 42 along the circumferential direction is attached to the end shaft 38 so that it can rotate physically. It is. A bracket 44 is attached to one end side frame 33, and a roller 45 is rotatably supported by the bracket 44, and is supported by the bracket 44. The roller 45 is rotatably engaged with the groove 42 of the axial guide 43. The groove 42 of the axial guide 43 is annular in the circumferential direction, but is eccentric in the axial direction, and is provided with a rotation of the axial guide 43. At this time, the axial guide 43 reciprocates in the axial direction with respect to the roller 45 to which the groove 42 is engaged. In other words, the rotary plunger 13 is moved in the axial direction by the axial guide 43 and the roller 45 having the groove 42. A rotating brush axis direction moving means 46 as a simulation mechanism is configured.

 The other end of the shaft 39 is provided with a support portion 48 via a bearing 47 that allows the shaft 39 to rotate, and this support portion 48 is provided. It is supported on the frame 32 side by a connecting member 49. Therefore, the support portion 48 is kept in a non-rotation state.

The pulley 50 is fixed to the shaft body 39 at the other end, and the driving shaft 5 of the motor 51 of the rotating brush rotating drive means 21 fixed to the side frame 34 Pulleys 53 are fixed to 2, and velvets 54 are stretched to these pools 50:53. Then, the rotation of the rotating brush 13 through the shaft body 39 is performed by the driving of the motor 51. You

 In addition, in the blanket cylinder cleaning device 11, the rotating brush 13 is separated from the blanket cylinder B by a moving mechanism (not shown). The rotating brush 13 moves between the separating position and the cleaning position where the rotating brush 13 contacts the bracket cylinder B.

 Next, the operation of cleaning the blanket drum B by the blanket drum cleaning apparatus 11 will be described.

 In addition, the blanket cleaning device 11 is provided with the rotating brush 13 in the standby state before the cleaning operation is started. Execute the cleaning liquid application process before waiting at the separation position where the separation has occurred.

 Rotate the blanket cylinder B in the rotational direction a in FIG.

 The rotating brush 13 is rotated in the same direction b as the rotating direction a on the surface of the bracket body B. The cleaning liquid is sprayed from the nozzle 28 of the cleaning liquid supply means 15 onto the rotating brush 13 to retain the liquid. When a sufficient amount of the cleaning liquid has been retained in the rotating brush 13, the spraying of the cleaning liquid from the nozzle 28 of the cleaning liquid supply means 15 is stopped.

 Move the blanket cylinder cleaning device 11 closer to the blanket cylinder B and move the rotating brushes 13 to the surface of the blanket cylinder B. Make contact.

With this, the cleaning solution retained in the rotating brushes 13 is transferred to the blanket cylinder B and applied. At this time, the bracket body B and the rotating brush 13 are in the same direction. And the rotation of the rotating brush 13 in the axial direction by the rotating brush axis moving means 46. The washing liquid retained in the rotating brush 13 is easily transferred to the blanket cylinder B, and a sufficient amount of the washing liquid is supplied in a short time in the blanket fl. The cleaning liquid can be given to the ink, and the washing liquid can be sufficiently adapted to the ink of the blanket cylinder B and the attached material such as paper powder.

 When the cleaning liquid has been sufficiently absorbed into the blanket cylinder B, move the blanket cylinder cleaning device 11 away from the blanket cylinder B. Then, the rotating brush 13 is moved away from the surface of the bracket body B, and the rotating brush 13 stops rotating. This completes the cleaning liquid application process.

 After completing the cleaning liquid application step, the cleaning step is performed next.

 The rotating brush 13 is rotated in the rotating direction a and the opposite direction c on the surface of the bracket body B, and the screen brush 14 is rotated. Rotate in the same direction as the direction of rotation on the surface of step 3 or in the opposite direction.

 The blanket cylinder cleaning device 11 is moved closer and closer to the blanket cylinder B, and the rotating brush 13 is moved to the surface of the blanket cylinder B. Contact.

As a result, the rotating brush 13 and the blanket cylinder B rotate in opposite directions to each other, and the rotating brush 13 and the rotating brush 13 rotate. Since the speed of relative rubbing with the bracket body B was high, the rotation of the bracket B with the rotating brushes 13 and When the attached matter such as paper powder can be removed efficiently, the blanket cylinder B was used in the cleaning solution application process in the previous process. The rotating brush 13 is reciprocated in the axial direction by the rotating brush axial moving means 46 so that the cleaning liquid is sufficiently adapted to the attachment. The rotating brush 13 makes it possible to easily remove the deposits on the bracket body B with the rotating brush 13, so that it can be securely attached in a short time. Kimono can be removed.

Then, the attached matter adhered to the rotating brush 13 is removed together with the cleaning liquid with a screen s 14. The scraper S 14 has a plurality of spirally projecting portions 23 protruding from the peripheral surface of the shaft body 22 a and comes into point contact with the rotating brush 13. As the shaft body 2 2a rotates, the point contact point with the rotating brush 13 of each of the cutting sections 23 moves in the axial direction, and the rotating brush 13 The attachment can be removed over the entire length of the shaft in the axial direction. At this time, the rotating brush 13 is reciprocated in the axial direction by the rotating brush shaft moving means 46, so that the rotating brush 13 is attached. Kimono can be easily removed. The attachment that has been received at each of the receiving portions 23 is received in the groove 24, and a part of the attachment is moved along the groove 24 and is rotated from the end to the drain. A part of the bracket falls down from inside the groove 24 and is collected in the drain. The ink on the blanket cylinder B and the attachment of the kimono such as paper powder are complete. When the cleaning is completed, the bracket cleaning device 11 is moved so as to separate from the bracket B, and the rotating brush 13 is moved to the blank. Departure from the surface of the case B Then, stop the rotation of the rotating brush 13 and the scraper 14. In addition, the rotation of the blanket cylinder B is stopped. This completes the cleaning process.

 Then, after completing the cleaning step, the self-cleaning step of the rotating brush 13 is executed next.

 The rotating brush 13 is rotated in the same direction b as the rotating direction a on the surface of the bracket body B or in the opposite direction c, and the scraper 1 is rotated. While rotating the rotating brush 13 in the same direction as the rotating direction of the surface of the rotating brush 13 or in the opposite direction, the cleaning liquid is supplied from the nozzle 28 of the cleaning liquid supply means 15. After spraying the cleaning brush 13 onto the rotating brush 13, the spraying of the cleaning solution from the nozzle 28 of the cleaning solution supply means 15 is stopped, but the rotation is stopped. The rotation of brushes 13 and scrapers 14 is continued.

 As a result, the dirt adhering to the rotating brush 13 is washed away with the cleaning liquid, and the dirt is removed together with the cleaning liquid by the screen nozzle 14. Automatically clean the rotating brushes 13.

 After cleaning the rotating brushes 13, the rotating brushes 13 and the rotation of the scraper 14 are stopped. Thus, a series of cleaning operations is completed.

 Then, the scraper 1 of the blanket body cleaning device 1 1

According to 4, the connecting portion 23, which is helically projecting from the peripheral surface of the shaft body 22 a, makes point contact with the rotating brush 13, and attaches the rotating brush 13. In order to remove the kimono, the rotating brushes 13 are worn and the rotating brushes 13 are rotated compared to a plate-shaped scraper that comes in contact with a line or surface. Rotating brush to be driven Rotating driving means 21 Such a load can be reduced, and the tightness of making the scraper 14 evenly contact the entire length of the rotating brush 13 is alleviated. Thus, adjustment of the positional relationship with the rotating brush 13 can be easily performed.

 Since the chamfered portion 23 is helically protruded on the peripheral surface of the shaft 22a, the setting of the chamfered portion 23, such as the amount of protrusion of the chamfered portion 23 from the shaft 22a, can be easily performed. .

 Since the take-out portion 23 is provided at a plurality of positions in the circumferential direction of the shaft body 22a at equal intervals, and is provided around the shaft body 22a by turning a plurality of times, the number of turns is increased. Even if the contact with the rotating brush 13 is a point contact, the removal effect can be enhanced.

 It should be noted that the cut-out portion 23 of the scraper 14 is not limited to four places on the peripheral surface of the shaft body 22a, but may be at least at one place. The number of rounds of the circumference of is not limited to four, and can be appropriately set according to the length of the shaft body 22a in the axial direction. The spiral lead of the take-up part 23 may be a rotating brush 1 if large.

If the point contact to 3 approaches line contact or surface contact, and if the contact is small, the effect of removing from the rotating brush 13 will be reduced. Then, set them appropriately in consideration of these.

 Next, FIG. 5 shows a second embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and their description is omitted.

The scraper for a rotating brush (hereinafter referred to as “screen angle”) 61 is a square body having a rectangular cross section and a long rectangular shape, which is a scraper body 62. The four main parts of this scraper body 62 After chamfering the top points 63, 64, 65, and 66 into a curved surface with a radius of 1 mm or less, for example, the peripheral surface is centered on the axis 67 of the scraper body 62. It is formed by twisting in the direction. Each of the vertices 63, 64, 65, 66 is formed in a spiral shape by this screwing, and each of the vertices 63, 64, 65, 66 is attached to the rotating brush 13. It is formed as a take-out part 68 for taking out the heat. A groove 69 is spirally formed between these vertices 63, 64, 65, 66.

 At both ends of the screen No. 61, shaft portions 70, 71 which are supported by the rotation itself with respect to the device main body 12 side are provided separately or separately. Yes.

 Also, when the screen 61 is applied to the blanket cylinder cleaning device 11 and the blanket cylinder B is cleaned, each top is also removed. The first portion of the rotating brush 13 can be removed by the point of contact of the rotating portion 13 with the rotating portion 13 at the point 63, 64, 65, 66. The same operational effects as in the embodiment are obtained. In particular, the contact between the cutting portion 68 at each of the vertices 63, 64, 65, and 66 and the brush hair 20 of the rotating brush 13 becomes smooth, and each of the vertices 63, 64, 65 , 66 can be smoothly transferred in the axial direction of the rotating brush 13 at the contact point of the mounting portion 68.

The scraper body 62 having a rectangular cross section is twisted and machined, and a spiral section is formed at each of the apexes 63, 64, 65, 66 of a polygon. As a result, the screen-no-61 having the spiral take-up portion 68 can be easily manufactured. Again, A single screen body 62 made of solid wood is formed with a torsion force U. Therefore, it is possible to keep the strength and reduce the diameter to reduce the weight. .

 Note that the scraper body 62 is not limited to a rectangular cross-section, but may be a polygon other than a triangular cross-section, a pentagonal cross-section, or the like. The same operation and effect can be obtained by configuring each of the vertices as a rectifying part. In addition, the scraper body 62 may be formed by twisting a plate-shaped object, and the both side edges of the plate may be configured as cut-out portions. As a result, a similar function and effect can be obtained.

In the above-described embodiment, the rotating brush rotating driving means 21 and the screenless rotating driving means 27 are individually provided by using different driving mechanisms. The rotation may be controlled separately, or the mechanism may be simplified by using the same drive mechanism. In the case of individually controlling the rotation by using another drive mechanism, the rotation direction of the rotation brush 13 and the rotation direction of the screen 14 are used. And can be easily set in the opposite or the same direction. When the same drive mechanism is used, for example, a belt is applied between the axis of the rotating brush 13 and the axis of the screen S14. The belt should be driven to transmit the driving force, and this belt should be run in parallel between the two axes, or it could be twisted around. As a result, the rotation direction of the rotation brush 13 and the rotation direction of the screen 14 can be arbitrarily set in the opposite direction or the same direction. And can be done. In addition, the screens 14 and 61 come in contact with the rotating brush 13 to remove the adhered substance.The removing position and the separating position from the rotating brush 13 are also described. It may be moved to the evacuation position. In this case, in the cleaning process, contact the screen brushes 14 and 61 with the screen brushes 13 to remove the deposits on the screen brush 13. By separating the scraper 1461 from the rotating brush 13 in the cleaning liquid applying step, the rotating brush is used in the cleaning liquid applying step. The cleaning liquid supplied to the screen 13 can be applied to the blanket cylinder く without removing it with the screens 14 and 61. Possibility of industrial use

 The rotating brush scraper of the present invention is applicable to a blanket cylinder cleaning device for cleaning a blanket cylinder using a rotating brush. In addition to the above, the present invention can be applied to an apparatus for cleaning or cleaning using a rotating brush.

Claims

The scope of the claims 1. The screener body and  A removal part that is spirally installed around the screen body and that removes the adherence of the rotating brush  A screen brush for a rotating brush, characterized by being provided with: ° °.  2. The scraper body has a cylindrical shaft,  The trimming portion is helically protruded from the peripheral surface of the shaft body.  The screen brush for a rotating brush according to claim 1, characterized by this feature.  3. The chamfered portions are provided at a plurality of positions in the circumferential direction of the shaft body at equal intervals, and are provided around the shaft body a plurality of times. To  The screen brush for a rotating brush according to claim 2, characterized by this feature.  4. The take-up section is formed by screwing the screen body into a spiral shape.  The scope of the claim characterized by the above feature. The screen brush for a rotating brush according to any one of paragraphs 1 to 3 described above.  5. The chamfered section is provided at each vertex of the spiral formed by screwing and processing the cross-sectioned polygonal scraper body. Scope of claim featuring this feature Paragraph 1 or Paragraph 3 Either of the screen brushes for rotating brushes ^?  6. A rotating brush that removes deposits on the blanket cylinder by contact with the blanket cylinder;  A rotating-push rotating means for rotating the rotating brush; and  Scope of Claim Screening screen for rotating brush according to any one of paragraphs 1 to 5;  A scraper rotating drive means for rotating and driving the screen brush for rotating brush.  A blanket cylinder cleaning device characterized by having a cleaning device.  7. Equipped with a rotating brush axial direction moving means for reciprocatingly moving the rotating brush in the axial direction.  The blanket cylinder cleaning device according to claim 6, characterized by this feature.