An anilox roller multi-head polishing device

Abstract

The utility model discloses a kind of anilox roller multi-head polishing device, belong to anilox roller polishing field. Mainly including base, cover is provided on base, clamping mechanism for fixing anilox roller is provided on base, and polishing mechanism is equipped on the side of clamping mechanism on base, and polishing mechanism includes two groups of polishing grinding roller that can be relative to anilox roller and make feed motion to realize polishing operation, dust collection unit that collects dust is equipped on the side of polishing grinding roller, and two groups of dust collection unit butt joint and form sealed space, and detachable cleaning unit is provided on dust collection unit. A kind of anilox roller multi-head polishing device of the application, anilox roller is fixed by clamping mechanism, polishing grinding roller is close to operation when polishing, and sealed space is formed by butt joint of two sides dust collection unit, effectively intercept dust and reduce drift;Collaborate detachable cleaning unit on dust collection unit, clean residual dust on the surface of anilox roller in time, avoid affecting polishing effect, improve polishing uniformity and surface precision, reduce environmental dust pollution again, and cleaning unit is detachable, and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of anilox roller polishing technology, and in particular to a multi-head anilox roller polishing device. Background Technology

[0002] Anilox rollers are key components in gravure printing, flexographic printing, and coating processes. They are cylindrical rollers whose surfaces are engraved to form uniform tiny cells (used to transfer ink / coating liquid). After engraving, burrs and molten residues are easily left around the cells, and the roller surface may have rough marks. Therefore, polishing is required to remove impurities and optimize the smoothness of the inner wall of the cells to avoid ink residue clogging the cells. For example, the patent with publication number CN217992104U specifically discloses a polishing device for processing anilox rollers of printing machines, including a base plate, a dust collection box, a drive seat, a first drive mechanism, a polishing component, a second drive mechanism, and a dust extraction component. The dust extraction component can draw the dust that escapes during polishing into the dust collection box, thus preventing the dust from escaping and polluting the surrounding environment. During the implementation of the aforementioned patent, the powder generated during polishing by the two polishing rollers easily adheres to the surface of the anilox roller. Relying solely on a dust extraction hood to remove the scattered dust is insufficient to clean the residual powder on the anilox roller surface. Furthermore, when the polishing roller passively rotates, powder easily adheres to its surface, carrying it to new polishing areas upon re-contact with the anilox roller, affecting the uniformity of subsequent polishing and the surface precision of the anilox roller. Therefore, a multi-head polishing device for anilox rollers needs to be designed. Utility Model Content

[0003] This utility model provides a multi-head polishing device for anilox rollers to solve the problem that powder generated during polishing roller grinding easily adheres to the surface of the anilox roller, affecting the uniformity of subsequent grinding.

[0004] This utility model embodiment adopts the following technical solution: a multi-head polishing device for anilox rollers. It includes a base, a cover on the base, a clamping mechanism for fixing the anilox rollers on the base, and a polishing mechanism on the base and located on one side of the clamping mechanism. The polishing mechanism includes two sets of polishing rollers that can feed relative to the anilox rollers to achieve polishing operations. Dust collection units are provided on both sides of the polishing rollers, and the two sets of dust collection units are joined to form a sealed space. A detachable cleaning unit is provided on each dust collection unit.

[0005] Furthermore, the polishing mechanism includes two sets of fixed frames, each with an extension frame at both ends. A sliding table slides horizontally within the extension frame via a buffer unit. The polishing roller bearing is positioned between the two sets of sliding tables. The two sets of fixed frames move closer to or further away from each other via a screw-moving mechanism.

[0006] Furthermore, the buffer unit includes a positioning plate, which is fixed in the center of the extension frame at a position slightly to the right. A guide post is horizontally movably inserted through the side of the positioning plate. One end of the guide post is fixedly connected to the side of the sliding table. A spring is sleeved on the guide post, and the two ends of the spring abut against the positioning plate and the sliding table, respectively.

[0007] Furthermore, the dust collection unit includes two sets of dust collection hoods, which are respectively arranged on the side of the fixed frame. Each dust collection hood is provided with a vertically arranged dust collection pipe, and the dust collection pipe is provided with multiple sets of horn covers facing the anilox roller along the vertical direction.

[0008] Furthermore, the two sets of symmetrically arranged dust collection units have dust collection pipes connected to fans via flexible hoses and connected to the negative pressure end of the fans. A collection box is supported at the bottom of the fans, and the discharge end of the fans is connected to the collection box via a flexible hose. The collection box is mounted on the base.

[0009] Furthermore, the cleaning unit includes a positioning plate, which is fixed to the bottom surface of the inner wall of the dust extraction hood. A cleaning brush is inserted into the positioning plate, and one end of the cleaning brush moves through the top of the inner wall of the dust extraction hood and is fixed by a pipe clamp mechanism. An opening groove is provided at the top of the inner wall of the dust extraction hood for the cleaning brush to be installed and removed.

[0010] Furthermore, a limiting pin is fixedly provided at one end of the brush shaft of the cleaning brush, and a positioning hole adapted to the limiting pin is provided on the positioning plate, and the limiting pin is inserted into the positioning hole.

[0011] Furthermore, the clamping mechanism includes a fixed clamp, which is fixed to the upper surface of the dust extraction cover. A movable clamp is hinged to one side of the fixed clamp, and the two are joined together to form a surrounding and fixing structure for the cleaning brush rod.

[0012] Furthermore, the fixed clamp is hinged to a rotating shaft at the end away from the movable clamp, and the movable clamp is provided with a notch at the end away from the fixed clamp. The rotating shaft is adapted to be rotated and engaged in the notch, and a wing nut is threaded to one end of the rotating shaft.

[0013] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects: A multi-head polishing device for anilox rollers includes a clamping mechanism that secures the anilox roller, providing a foundation for polishing. When the polishing roller of the polishing mechanism operates close to the anilox roller, the dust collection units on both sides connect to form a sealed space, which can intercept polishing dust and reduce dust dispersion. Combined with a detachable cleaning unit on the dust collection unit, residual dust on the surface of the anilox roller can be cleaned promptly, preventing dust adhesion from affecting the polishing effect. This device improves the uniformity and surface precision of the anilox roller polishing, reduces dust pollution to the working environment, and the detachable design of the cleaning unit facilitates maintenance. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0015] In the attached diagram: Figure 1 This is an overall schematic diagram of a multi-head polishing device for an anilox roller according to this application; Figure 2 for Figure 1 Schematic diagram of the polishing mechanism in operation; Figure 3 for Figure 1 Schematic diagram of a partial structure; Figure 4 for Figure 2 Enlarged view of point A; Figure 5 for Figure 1 Schematic diagram of the polishing mechanism; Figure 6 for Figure 5 Enlarged view of point B; Figure label: 1. Base; 11. Cover; 2. Clamping mechanism; 21. Frame; 201. Motor 1; 202. Dust cover; 22. Sliding seat 1; 23. Rotary motor; 24. Three-jaw chuck; 26. Lead screw moving mechanism 2; 27. Sliding seat 2; 29. ​​Fixed seat; 3. Polishing mechanism; 31. Fixed frame; 32. Sliding table; 321. Grinding roller; 33. Positioning plate; 331. Guide column; 34. Spring; 35. Dust extraction cover; 351. Opening slot; 36. Suction pipe; 37. Horn cover; 38. Positioning plate; 39. Cleaning brush; 310. Limit pin; 311. Fixed clamp; 312. Movable clamp; 313. Rotating shaft; 314. Wing nut; 41. Collection box; 42. Fan. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Reference Figures 1 to 6As shown, this utility model embodiment provides a multi-head polishing device for anilox rollers, including a base 1, a clamping mechanism 2, a polishing mechanism 3, a dust collection unit, and a cleaning unit. A cover 11 is provided on the base 1. The clamping mechanism 2 is disposed on the base 1 and is used to coaxially clamp and fix the anilox roller. The polishing mechanism 3 is disposed on the base 1 and located on one side of the clamping mechanism 2. The polishing mechanism 3 includes two sets of grinding rollers 321 that can feed relative to the anilox roller to achieve polishing operations, and are respectively arranged on both sides of the grinding rollers 321. The dust collection ends of the two sets of dust collection units are connected to form a sealed space covering the grinding area to collect dust generated during the grinding process. The cleaning unit is detachably disposed on the side of the dust collection unit near the anilox roller, and is used to simultaneously clean residual dust on the surface of the anilox roller.

[0019] The polishing mechanism 3 in this utility model is mainly used to perform multi-head synchronous polishing on the surface of the anilox roller to remove burrs from the surface of the anilox roller. As a preferred polishing mechanism 3, it includes two sets of fixed frames 31 arranged along the axial direction of the anilox roller. Each set of fixed frames 31 has an extension frame integrally formed at both the upper and lower ends. A sliding table 32 is horizontally slidably arranged in the extension frame through a buffer unit. The buffer unit can provide elastic buffering during the polishing process to avoid damage caused by hard contact between the polishing roller 321 and the surface of the anilox roller. The grinding roller 321 is rotatably mounted between two sets of corresponding sliding tables 32 via bearings. It can move synchronously and rotate flexibly with the sliding tables 32. The two sets of fixed frames 31 are driven by the screw moving mechanism 26 arranged at their bottom, which can move closer to or further away from the anilox roller, thereby adjusting the contact pressure between the grinding roller 321 and the surface of the anilox roller to adapt to the polishing needs of anilox rollers of different diameters.

[0020] It should be noted that in this application, laser rangefinders and signal receivers are respectively installed on two sets of extended frames symmetrically arranged on two sets of fixed frames 31, and the line connecting the laser rangefinders and signal receivers is collinear with the axis of the corresponding two sets of grinding rollers 321; the laser rangefinder detection component is used to accurately detect the actual distance between the two sets of grinding rollers 321 in real time when the lead screw moving mechanism 26 drives the two sets of fixed frames 31 to move closer or further away from each other. By collecting spacing data and feeding it back to the control system, closed-loop control of the spacing of the grinding rollers 321 can be achieved. On the one hand, it ensures that the contact pressure between the two sets of grinding rollers 321 and the surface of the anilox roller is symmetrical and consistent, avoiding excessive pressure on one side that could cause deformation of the anilox roller or uneven polishing. On the other hand, the initial spacing of the grinding rollers 321 can be quickly adjusted according to anilox rollers of different diameters, improving the adaptability of the device to the anilox rollers and preventing collision damage between the grinding rollers 321 and the anilox roller due to improper spacing adjustment, thereby further ensuring the stability and processing accuracy of the polishing process. The buffer unit in this utility model is mainly used to provide elastic buffering and adaptive adjustment functions in polishing operations, absorbing the vibration and impact generated during the polishing process. The preferred buffer unit includes a positioning plate 33, which is fixed in the center right position within the extension frame and is perpendicular to the sliding direction of the sliding table 32. A guide post 331 is horizontally movably inserted through the side of the positioning plate 33. One end of the guide post 331 is fixedly connected to the side of the sliding table 32, and its axial direction is consistent with the sliding direction of the sliding table 32, thus playing a guiding and limiting role. A spring 34 is coaxially sleeved on the guide post 331, and the two ends of the spring 34 elastically abut against one side of the positioning plate 33 and the side of the sliding table 32, respectively, forming an elastic buffer structure. When the polishing roller 321 is subjected to the reaction force or vibration impact of the anilox roller during the polishing process, the sliding table 32 slides along the direction of the guide post 331. The impact force is absorbed by the compression and reset deformation of the spring 34, achieving a buffering and shock absorption effect. At the same time, the elastic tension of the spring 34 pushes the sliding table 32 to drive the polishing roller 321 to always be in close contact with the surface of the anilox roller, ensuring the stability and continuity of the polishing process.

[0021] The dust collection unit in this invention is mainly used to collect dust generated during the polishing process of the anilox roller in real time, preventing dust from escaping and polluting the working environment. As a preferred dust collection unit, it includes a dust collection hood 35, which is fixedly installed on the side of the fixed frame 31 by bolts, with its opening facing the anilox roller polishing area. Inside the dust collection hood 35, a dust collection pipe 36 extending vertically is fixedly installed. On the side of the dust collection pipe 36 near the anilox roller, multiple sets of horn covers 37 are evenly spaced vertically. The openings of each set of horn covers 37 face the surface of the anilox roller, and a reasonable gap is reserved between the opening edge of the horn cover 37 and the surface of the anilox roller. The arrangement of multiple sets of horn covers 37 can expand the dust collection coverage area. Combined with the blocking effect of the dust collection hood 35, the polishing dust can quickly enter the dust collection pipe 36 through the horn covers 37, improving the dust collection efficiency.

[0022] In order to collect dust in a concentrated manner and avoid secondary dust diffusion, the dust collection pipes 36 of the two symmetrically arranged dust collection units are sealed to the negative pressure input end of the fan 42 through wear-resistant flexible hoses. The bottom of the fan 42 is fixedly supported by the top of the collection box 41 through a bracket. The exhaust output end of the fan 42 is sealed to the feed inlet of the collection box 41 through another set of hoses. When in operation, the blower 42 generates negative pressure suction after starting, which sucks in the dust from the grinding area through the dust suction pipe 36 and the horn cover 37, and then transports it to the blower 42 and the collection box 41 through the hose, so as to achieve centralized collection of dust.

[0023] The cleaning unit in this utility model is mainly used to clean the dust and polishing debris remaining on the surface during the polishing process of the anilox roller in real time. The preferred cleaning unit includes a positioning plate 38, which is fixedly installed on the bottom surface of the inner wall of the dust extraction cover 35 and is parallel to the axis of the anilox roller. The lower end of the cleaning brush 39 is detachably inserted into the positioning plate 38 through the insertion hole, and its upper end moves through the top of the inner wall of the dust extraction cover 35 and is locked and fixed by the tube clamp mechanism to realize the vertical positioning of the cleaning brush 39. An opening groove 351 is provided at the top of the inner wall of the dust collection hood 35 corresponding to the installation position of the cleaning brush 39. The width of the opening groove 351 is adapted to the cross-sectional size of the brush handle of the cleaning brush 39, which facilitates the quick installation and disassembly of the cleaning brush 39 without affecting the sealing performance of the dust collection hood 35. The bristle end of the cleaning brush 39 is elastically attached to the surface of the anilox roller. When the anilox roller rotates, the bristles can sweep off the residual dust on the surface, so that the dust can be sucked in and collected by the dust collection unit in time.

[0024] To further improve the ease of disassembly and assembly of the cleaning brush 39 and the positioning plate 38, and to prevent the cleaning brush 39 from rotating or shifting during operation, thus ensuring consistent cleaning results, a limiting pin 310 is fixedly provided at one end of the brush shaft of the cleaning brush 39. A positioning hole adapted to the limiting pin 310 is correspondingly provided on the positioning plate 38. The diameter of the positioning hole matches that of the limiting pin 310, and the limiting pin 310 and the positioning hole are connected by clearance fit to achieve a detachable plug-in connection.

[0025] The clamping mechanism in this utility model is mainly used to detachably lock and fix the cleaning brush 39. The preferred clamping mechanism includes a fixed clamp 311, which is fixed on the upper surface of the dust cover 35 and is set at the through position of the cleaning brush 39. A movable clamp 312 is hinged to the side of the fixed clamp 311 near the brush rod. The inner sides of the fixed clamp 311 and the movable clamp 312 are provided with arc-shaped clamping grooves that are adapted to the outer diameter of the cleaning brush 39. When the two are closed and connected, they form a fully enclosed clamping structure for the cleaning brush 39.

[0026] In order to lock the fixed clamp 311 and the movable clamp 312 and prevent the tube clamping mechanism from loosening due to vibration or external force during the operation of the cleaning brush 39, the end of the fixed clamp 311 away from the hinged movable clamp 312 is hinged to the rotating shaft 313 by a pin. The end of the movable clamp 312 away from the fixed clamp 311 is provided with a notch (not shown in the figure) that matches the shape of the rotating shaft 313. The width of the notch is slightly smaller than the diameter of the rotating shaft 313, so that the rotating shaft 313 can be pre-fixed by rotating and snapping into the notch. The outer circumference of the end of the rotating shaft 313 away from the hinge end is machined with an external thread, and a wing nut 314 is threadedly connected to it. When the rotating shaft 313 is engaged with the notch groove, the wing nut 314 is tightened to fit against the outer side of the movable clamp 312. The clamping force of the wing nut 314 securely locks the fixed clamp 311 and the movable clamp 312 together, thereby achieving the clamping of the cleaning brush 39.

[0027] The clamping mechanism 2 in this utility model is mainly used to coaxially clamp and fix both ends of the anilox roller, and is also adapted to the processing requirements of anilox rollers of different lengths. As a preferred clamping mechanism 2, it includes a fixed seat 29, which is fixedly installed on the base 1 and is centrally located above the screw moving mechanism 26. A sliding seat 22 is correspondingly arranged above the fixed seat 29. The sliding seat 22 and the fixed seat 29 are arranged vertically opposite each other, and the end faces of the two are coaxially mounted with three-jaw chucks 24 (the three-jaw chuck 24 is prior art, and its specific structure and working principle will not be described here) through bearings. The clamping centers of the two three-jaw chucks 24 are collinear with the axis of the anilox roller.

[0028] To achieve linear drive of the sliding seat 22 and adjust the distance between it and the fixed seat 29 to accommodate the clamping requirements of anilox rollers of different lengths, the clamping mechanism 2 also includes a lead screw moving mechanism. The lead screw moving mechanism includes a frame 21, which is vertically fixed on the base 1. A motor 201 is fixedly installed at the top of the frame 21. The output shaft of the motor 201 is coaxially connected to a lead screw (not shown in the figure) through a coupling. The two ends of the lead screw are rotatably supported at the upper and lower ends inside the frame 21 by bearings. A dust cover 202 is covered on the top of the frame 21 along the length direction. A reasonable gap is reserved between the dust cover 202 and the frame 21 for the movement of the internal transmission components to avoid interference. The sliding seat 22 is slidably sleeved on the dust cover 202, and the inner side of the sliding seat 22 is threadedly connected to the lead screw 1 through a threaded sleeve to form a helical transmission pair. When the motor 201 starts and drives the lead screw 1 to rotate in both directions, the rotational motion is converted into linear motion through the threaded transmission, thereby driving the sliding seat 22 to move smoothly in a straight line along the length of the dust cover 202, realizing the adjustment of the distance between it and the fixed seat 29, and meeting the clamping and fixing requirements of the two ends of the anilox roller of different lengths. During operation, one end of the anilox roller to be polished is first placed within the clamping range of the three-jaw chuck 24 on the fixed base 29. The radial clamping action of the three-jaw chuck 24 achieves the centering and fixing of one end of the anilox roller. Then, the screw moving mechanism is adjusted to drive the sliding seat 22 to move closer to the other end of the anilox roller, so that the three-jaw chuck 24 on the sliding seat 22 is aligned with the other end of the anilox roller. The radial clamping action of the three-jaw chuck 24 completes the centering and fixing of the other end of the anilox roller, and finally achieves coaxial clamping of both ends of the anilox roller, providing stable support for the polishing operation.

[0029] To ensure stable rotation of the anilox roller after clamping and fixing, and to cooperate with the polishing mechanism 3 to complete the uniform surface polishing operation, a rotary motor 23 is fixedly installed on the sliding seat 22. The output shaft of the rotary motor 23 is coaxially connected to the three-jaw chuck 24 on the sliding seat 22 via a coupling. During operation, the rotary motor 23 outputs torque after starting, which drives the three-jaw chuck 24 to rotate synchronously through the coupling, thereby driving the clamped anilox roller to rotate at a preset speed, so that the surface of the anilox roller can contact the polishing roller 321 of the polishing mechanism 3, ensuring the uniformity of polishing.

[0030] The second lead screw moving mechanism 26 in the utility model is mainly used to provide the spacing adjustment power for the polishing mechanism 3. As a preferred embodiment, the second lead screw moving mechanism 26 has a similar main structure to the first lead screw moving mechanism, both including a frame 21, a drive motor, a lead screw and a dust cover 202, etc. The difference is that the first lead screw of the second lead screw moving mechanism 26 is a bidirectional lead screw. The two ends of the bidirectional lead screw are machined with external threads with opposite directions. Two sets of sliding seats 27 with the same structure are connected to the corresponding threads on the bidirectional lead screw. The two sets of sliding seats 27 are fixedly connected to the bottom of the two sets of fixed frames 31 by bolts to form a synchronous drive structure. When the drive motor of the lead screw moving mechanism 26 starts and drives the bidirectional lead screw to rotate, the two sets of sliding seats 27 will move synchronously in opposite directions (approaching or moving away from each other) along the axis of the bidirectional lead screw, using the transmission characteristics of the bidirectional thread. This will drive the two sets of fixed frames 31 and the grinding rollers 321 installed on them to adjust their spacing synchronously, ensuring that the contact pressure between the two sets of grinding rollers 321 and the surface of the anilox roller is always symmetrical and balanced, adapting to the polishing requirements of anilox rollers of different diameters.

[0031] Working principle: Before operation, the first sliding seat 22 is moved by the first lead screw moving mechanism, which works with the three-jaw chuck 24 on the fixed seat 29 to clamp the two ends of the anilox roller coaxially. The rotary motor 23 is started to drive the anilox roller to rotate at a constant speed. Then, the second lead screw moving mechanism 26 drives the bidirectional lead screw to rotate, which drives the two sets of fixed frames 31 and the grinding roller 321 to move closer to the anilox roller synchronously. The laser range sensor detects the distance between the grinding rollers 321 in real time and feeds it back to the control system to ensure symmetrical bonding pressure. During polishing, the buffer unit absorbs vibrations through guide posts 331 and springs 34, allowing the polishing roller 321 to adapt to the undulations of the anilox roller surface. The cleaning brush 39 of the cleaning unit elastically fits against the anilox roller, sweeping away residual dust as the anilox roller rotates. The limit pin 310 cooperates with the positioning plate 38 to ensure the stability of the cleaning brush 39. At the same time, the dust collection unit moves synchronously with the fixed frame 31 to enclose and seal the polishing area. The fan 42 generates negative pressure, which quickly collects dust through multiple sets of horn covers 37 and transports it to the collection box 41.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A multi-head polishing device for anilox rollers, comprising a base (1), wherein a cover (11) is provided on the base (1), characterized in that: The base (1) is provided with a clamping mechanism (2) for fixing the anilox roller. The base (1) is provided with a polishing mechanism (3) on one side of the clamping mechanism (2). The polishing mechanism (3) includes two sets of grinding rollers (321) that can feed relative to the anilox roller to achieve polishing operation. Dust collection units are provided on both sides of the grinding rollers (321). The two sets of dust collection units are connected to form a sealed space. A detachable cleaning unit is provided on the dust collection unit.

2. The multi-head polishing device for anilox rollers according to claim 1, characterized in that: The polishing mechanism (3) includes two sets of fixed frames (31). The fixed frames (31) have extension frames at both ends. A sliding table (32) slides horizontally within the extension frame through a buffer unit. The bearing of the polishing roller (321) is set between the two sets of sliding tables (32). The two sets of fixed frames (31) move closer or further away from each other through a screw moving mechanism (26).

3. The multi-head polishing device for anilox rollers according to claim 2, characterized in that: The buffer unit includes a positioning plate (33), which is fixed in the center of the extension frame at the right position. A guide post (331) is horizontally movably inserted through the side of the positioning plate (33). One end of the guide post (331) is fixedly connected to the side of the sliding table (32). A spring (34) is sleeved on the guide post (331), and the two ends of the spring (34) abut against the positioning plate (33) and the sliding table (32) respectively.

4. The multi-head polishing device for anilox rollers according to claim 3, characterized in that: The dust collection unit includes two sets of dust collection hoods (35), which are respectively arranged on the side of the fixed frame (31). The dust collection hoods (35) are provided with vertically arranged dust collection pipes (36), and the dust collection pipes (36) are provided with multiple sets of horn covers (37) arranged in the vertical direction facing the anilox roller.

5. The multi-head polishing device for anilox rollers according to claim 4, characterized in that: The two sets of vacuum units arranged symmetrically have vacuum pipes (36) connected to a fan (42) via hoses and connected to the negative pressure end of the fan (42). The bottom of the fan (42) is supported by a collection box (41). The exhaust end of the fan (42) is connected to the collection box (41) via a hose. The collection box (41) is set on the base (1).

6. The multi-head polishing device for anilox rollers according to claim 4, characterized in that: The cleaning unit includes a positioning plate (38), which is fixed to the bottom surface of the inner wall of the dust extraction hood (35). A cleaning brush (39) is inserted into the positioning plate (38). One end of the cleaning brush (39) extends through the top of the inner wall of the dust extraction hood (35) and is fixed by a pipe clamp mechanism. An opening groove (351) for installing and removing the cleaning brush (39) is provided at the top of the inner wall of the dust extraction hood (35).

7. The multi-head polishing device for anilox rollers according to claim 6, characterized in that: The cleaning brush (39) has a fixed limit pin (310) at one end of its brush shaft. The positioning plate (38) has a positioning hole that matches the limit pin (310). The limit pin (310) is inserted into the positioning hole.

8. The multi-head polishing device for anilox rollers according to claim 6, characterized in that: The clamping mechanism includes a fixed clamp (311) which is fixed to the upper surface of the dust extraction hood (35). A movable clamp (312) is hinged to one side of the fixed clamp (311), and the two are joined together to form a surrounding and fixing structure for the cleaning brush (39) rod.

9. A multi-head polishing device for anilox rollers according to claim 8, characterized in that: The fixed clamp (311) has a pivot (313) hinged to the end away from the movable clamp (312). The movable clamp (312) has a notch at the end away from the fixed clamp (311). The pivot (313) is adapted to be rotated and engaged in the notch. A wing nut (314) is threaded to one end of the pivot (313).

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