Surface impurity scraping mechanism for office paper production

Abstract

The utility model discloses a surface impurity scraping mechanism of office paper production, including multiple sets of guide roller, symmetric arrangement's processing roller, annular array distribution's brush subassembly and adjusting assembly. Processing roller surface is equipped with negative pressure hole and miscellaneous interface of discharging, and brush subassembly can radially telescopic and cooperate negative pressure adsorption and clean paper surface impurity. Adjusting assembly passes through worm and worm wheel mechanism synchronous adjusting brush subassembly pressure, and the different paper demand is adapted. The mechanism adopts integrated design, and cleaning and adsorption are synchronous, avoid the secondary pollution of impurity, and compact structure, maintenance is convenient, is applicable to high -speed paper production line, and cleaning efficiency is improved significantly and reduces operating cost.

Description

Technical Field

[0001] This utility model relates to the field of paper processing technology, specifically to a paper impurity scraping mechanism for office paper production. Background Technology

[0002] During the production of office paper, fiber debris, dust, or other impurities generated during production often adhere to the paper surface. These impurities not only affect the appearance quality of the paper but may also adversely affect subsequent printing, coating, or packaging processes. Therefore, it is crucial to install an efficient surface impurity cleaning system on the paper production line.

[0003] Traditional paper surface cleaning technologies mainly rely on fixed doctor blades, brush rollers, or negative pressure suction devices. For example, some devices use rotating brush rollers in conjunction with negative pressure nozzles to remove impurities, but such structures typically have the following drawbacks:

[0004] 1. Problem of secondary adhesion of impurities: Impurities after scraping are easy to disperse inside the equipment. Some impurities may re-adhere to the paper or the surface of the cleaning mechanism, reducing cleaning efficiency and even leading to frequent equipment maintenance.

[0005] 2. Insufficient adjustment flexibility: The pressure of the brush bristles or scraper is usually designed to be fixed, making it difficult to dynamically adjust according to different paper thicknesses or impurity characteristics. Uneven pressure can easily lead to poor cleaning results or paper damage.

[0006] 3. Complex structure: In existing technologies, impurity collection systems are often independent of the cleaning mechanism, requiring additional piping and negative pressure sources, which increases equipment costs and space requirements.

[0007] 4. Low efficiency of bidirectional cleaning: For the synchronous cleaning of impurities on both sides of paper, traditional equipment usually requires two independent mechanisms, which leads to complex transmission and makes it difficult to ensure the synchronicity of bidirectional cleaning.

[0008] Therefore, there is an urgent need for a compact, flexible, and efficient surface treatment mechanism for office paper that can clean and collect impurities, in order to improve paper production quality and reduce maintenance costs. Utility Model Content

[0009] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a surface impurity scraping mechanism for office paper production, which significantly improves the cleaning effect of surface impurities on office paper, while reducing equipment complexity and maintenance costs, and is suitable for modern high-speed paper production lines.

[0010] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a surface impurity scraping mechanism for office paper production, comprising:

[0011] The guide rollers are arranged in multiple sets, and the paper being processed is sequentially transported around each set of guide rollers.

[0012] The processing roller includes two sides of the paper, a negative pressure hole is provided on the outer surface of the processing roller, and a waste discharge interface is provided at one end of the processing roller.

[0013] The brush assembly is assembled onto the processing roller and arranged in a circular array. The brush assembly moves radially along the processing roller and scrapes off impurities from the paper surface. Each group of brush assemblies is provided with a negative pressure hole on the side used for cleaning impurities. The negative pressure holes are evenly arranged along the length of the processing roller.

[0014] An adjustment component is assembled into the processing roller and is poweredly connected to each group of brush assemblies. The adjustment component is used to synchronously control the extension and retraction posture of each group of brush assemblies.

[0015] Based on the above technical solutions, the following technical solutions are provided to ensure the stable assembly and operation of the guide rollers and processing rollers.

[0016] It also includes a mounting frame and a drive motor. The guide roller and the processing roller are rotatably mounted on the mounting frame. The drive motor is fixedly mounted on the mounting frame and two sets of symmetrically arranged drive bevel gears are fixedly connected to the output shaft. Transmission bevel gears are fixedly connected to both sets of processing rollers. The two sets of drive bevel gears are respectively engaged with the transmission bevel gears on the two sets of processing rollers.

[0017] Based on the above technical solutions, in order to ensure that the brush assembly can be stably assembled on the processing roller and achieve radial extension and retraction sliding along the processing roller, the following technical solutions are provided.

[0018] The surface of the processing roller has multiple sets of assembly notches arranged in a ring array. The brush assembly includes an assembly support plate and a cleaning brush. The assembly support plate has a guide through hole. A guide block is fixed to the side wall of the assembly notch and is slidably inserted into the guide through hole. The negative pressure hole is located on the bottom wall of the assembly notch. The cleaning brush is fixedly installed on the assembly support plate in a detachable manner. An assembly through hole is provided on the bottom wall of the assembly notch. A connecting plate is fixed to the bottom of the assembly support plate and is slidably inserted into the assembly through hole. The connecting plate is linked with the adjustment assembly.

[0019] Based on the above technical solutions, in order to ensure that the extracted impurities can be effectively discharged through the impurity discharge interface and to provide a stable negative pressure environment for the negative pressure holes, the following technical solutions are provided.

[0020] The processing roller has multiple sets of interconnecting holes arranged in a ring array. The interconnecting holes are arranged along the length of the processing roller and are connected to the negative pressure hole and the impurity discharge interface.

[0021] An assembly cover is fixedly installed on the outer wall of the mounting frame. A negative pressure pipe is connected to the assembly cover. The waste discharge port extends to the outside of the mounting frame and is rotatably installed in the assembly cover. The negative pressure pipe is in communication with the waste discharge port.

[0022] Based on the above technical solutions, in order to ensure that the adjustment components can be stably assembled on the processing roller and realize the synchronous adjustment of the extension and retraction posture of each brush component, the following technical solutions are provided.

[0023] The adjustment assembly includes a mounting bracket, a telescopic shaft, a rotating sleeve, and a connecting rod. The mounting bracket is fixedly installed on the mounting bracket and slidably inserted into the outer end of the telescopic shaft. The processing roller has a telescopic through hole at its shaft center that communicates with the assembly through hole. The telescopic shaft is rotatably installed into the telescopic through hole. The rotating sleeve is rotatably installed around the telescopic shaft. The connecting rod includes multiple sets arranged in a circular array and distributed in each set of the assembly through holes. The two ends of the connecting rod are respectively hinged to the rotating sleeve and the connecting plate.

[0024] Based on the above technical solutions, in order to achieve stable control of the telescopic shaft and prevent interference with the telescopic shaft when the processing roller is running at high speed, the following technical solutions are provided.

[0025] The adjustment assembly also includes an adjustment motor, a worm gear, and a worm. The worm gear is rotatably mounted between the mounting bracket and the processing roller. The outer section of the telescopic shaft has a threaded groove that is spun into the worm gear. The adjustment motor is fixedly mounted on the mounting bracket and is poweredly connected to the worm. The worm is rotatably mounted on the mounting bracket and is meshed with the worm gear.

[0026] The beneficial effects of this utility model are:

[0027] 1. High-efficiency impurity removal and prevention of secondary pollution: Through high-speed reverse-rotating processing rollers and brush components distributed in a ring array, combined with a negative pressure adsorption system, it can efficiently scrape off impurities such as fiber debris and dust from the paper surface.

[0028] 2. Double-sided synchronous cleaning with a compact structure. Utilizing a V-shaped paper transport path, two sets of processing rollers are positioned at the "waist" of each side of the paper and synchronized in opposite directions via a drive bevel gear. This ensures simultaneous cleaning of impurities on both sides, reducing equipment size and transmission complexity. The integrated negative pressure adsorption system is directly built into the processing rollers, eliminating the need for additional complex impurity collection devices, simplifying the overall structure and reducing maintenance difficulty.

[0029] 3. The brush component pressure is adjustable to adapt to different paper requirements. By adjusting the component, the extension and retraction of all brush components can be controlled simultaneously, and the contact pressure of the bristles on the paper can be precisely adjusted. It is suitable for paper of different thicknesses or surface characteristics, avoiding incomplete cleaning or paper damage caused by uneven pressure.

[0030] 4. Modular design facilitates maintenance. The cleaning brush is detachable for easy replacement or cleaning, reducing downtime. The roller can be segmented to facilitate the processing and cleaning of the internal negative pressure channel, while optimizing the assembly accuracy of the adjustment components.

[0031] 5. Stable operation, adaptable to high-speed production. The guide rollers adopt a multi-group layout to ensure smooth paper transport and avoid vibration or deviation that may affect the cleaning effect. The processing roller rotates in the opposite direction to the paper, which enhances the relative movement speed between the bristles and the paper, improves the efficiency of impurity removal, and is suitable for high-speed production lines. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model;

[0033] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure of this utility model after removing the mounting frame;

[0035] Figure 4 This is a schematic diagram of the processing roller and the components mounted on it.

[0036] Figure 5 A schematic diagram of the assembly of various components cut along the negative pressure hole and assembly through hole of the processing roller;

[0037] Figure 6 A schematic diagram of the assembly of various components cut along the axis of the processing roller;

[0038] Figure 7 This is a schematic diagram of the structure after the processing rod is radially cut.

[0039] Figure 8 A schematic diagram of the structure of the adjustment component and the brush component assembly;

[0040] Figure 9 A schematic diagram of the structure of the adjustable motor and telescopic shaft assembly.

[0041] In the diagram: 1 guide roller, 2 processing roller, 21 negative pressure hole, 22 impurity discharge interface, 23 transmission bevel gear, 24 assembly notch, 241 guide block, 242 assembly through hole, 25 connecting hole, 26 telescopic through hole, 3 brush assembly, 31 assembly support plate, 311 guide through hole, 312 connecting plate, 32 cleaning brush, 4 adjustment assembly, 41 mounting bracket, 411 guide sleeve, 42 telescopic shaft, 421 guide groove, 43 rotating sleeve, 44 connecting rod, 45 adjusting motor, 46 worm gear, 47 worm, 5 mounting frame, 51 assembly cover, 52 negative pressure pipe, 6 drive motor, 61 drive bevel gear, 7 paper. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figure 1-9 A surface impurity scraping mechanism for office paper production, comprising:

[0044] Guide roller 1, multiple sets of guide roller 1 are arranged, and the paper 7 being processed is sequentially transported around each set of guide roller 1;

[0045] The processing roller 2 includes two sides of the paper 7, and a negative pressure hole 21 is provided on the outer surface of the processing roller 2. One end of the processing roller 2 is provided with a waste discharge interface 22.

[0046] Brush assembly 3 is assembled onto processing roller 2 and arranged in a ring array. Brush assembly 3 moves radially along processing roller 2 and scrapes off impurities on the surface of paper 7. Each set of brush assembly 3 is provided with a negative pressure hole 21 on the side used to clean impurities. The negative pressure holes 21 are evenly arranged along the length of processing roller 2.

[0047] Adjustment component 4 is assembled into the processing roller 2 and is poweredly connected to each group of brush components 3. Adjustment component 4 is used to synchronously control the extension and retraction posture of each group of brush components 3.

[0048] At least three sets of guide rollers 1 are provided to stabilize and guide the paper 7 under force so that it is continuously transported in a V-shape when it is transported to the impurity scraping mechanism. At this time, the two sets of processing rollers 2 are arranged on both sides of the waist of the V-shaped paper 7 and are respectively located on opposite sides of the paper 7.

[0049] During the continuous transport of paper 7, the high-speed rotating processing roller 2 and the various brush assemblies 3 mounted on it can sequentially pass through the surface of paper 7. The rotation direction of the processing roller 2 and the brush assembly 3 is opposite to the transport direction of paper 7 at the corresponding position. The high-speed rotating brush assembly 3 completes the scraping and cleaning of impurities on the surface of paper 7. The negative pressure hole 21 corresponding to the brush assembly 3 is arranged in front of the rotation direction of the brush assembly 3. The impurities scraped off by the brush assembly 3 can be extracted by the negative pressure environment generated by the negative pressure hole 21 and finally discharged outward through the impurity discharge interface 22. This can prevent the scraped impurities from drifting in the mechanism and re-adhering to paper 7 or impurity scraping mechanism, thus affecting the impurity cleaning efficiency.

[0050] The system for cleaning and discharging impurities is integrated into the processing roller 2, eliminating the need for a separate impurity collection system and simplifying the complexity of the mechanism.

[0051] The adjustment component 4 can synchronously adjust the extension and retraction posture of each set of brush components 3 on the processing roller 2. The extension and retraction posture can be adjusted according to the different needs of office paper. Then, the paper 7 is subjected to specific pressure by the extension length of the brush component 3, so as to ensure that each set of brush components 3 can be uniformly adjusted and apply the same pressure when in contact with the paper 7 during operation.

[0052] To ensure the stable assembly and operation of guide roller 1 and processing roller 2, the following technical solutions are provided.

[0053] It also includes a mounting frame 5, a drive motor 6, and guide rollers 1 and processing rollers 2 are rotatably mounted on the mounting frame 5. The drive motor 6 is fixedly mounted on the mounting frame 5 and has two sets of symmetrically arranged drive bevel gears 61 fixedly connected to its output shaft. Both sets of processing rollers 2 are fixedly connected to transmission bevel gears 23. The two sets of drive bevel gears 61 are respectively engaged with the transmission bevel gears 23 on the two sets of processing rollers 2.

[0054] The mounting frame 5 ensures the stable installation and operation of the guide roller 1, the processing roller 2, and the drive motor 6. Since the drive motor 6 has two sets of symmetrically arranged drive bevel gears 61 connected to the power, it can drive the two sets of transmission bevel gears 23 and the processing roller 2 to always maintain the same speed and reverse rotation.

[0055] Since the two sets of processing rollers 2 and their brush assemblies 3 clean the two sides of the paper 7 respectively, and due to the layout of the guide roller 1 and the transmission posture of the paper 7, the two sets of processing rollers 2 need to run in opposite directions in order to effectively clean the two sides of the paper 7 through the corresponding brush assemblies 3.

[0056] To ensure that the brush assembly 3 can be stably assembled on the processing roller 2 and achieve radial extension and sliding along the processing roller 2, the following technical solution is provided.

[0057] The surface of the processing roller 2 has multiple sets of assembly notches 24 arranged in a ring array. The brush assembly 3 includes an assembly support plate 31 and a cleaning brush 32. The assembly support plate 31 has a guide through hole 311. The side wall of the assembly notch 24 is fixedly connected to a guide block 241 that is slidably inserted into the guide through hole 311. The negative pressure hole 21 is located on the bottom wall of the assembly notch 24. The cleaning brush 32 is fixedly installed on the assembly support plate 31 in a detachable manner. The bottom wall of the assembly notch 24 has an assembly through hole 242. The bottom of the assembly support plate 31 is fixedly connected to a connecting plate 312 that is slidably inserted into the assembly through hole 242. The connecting plate 312 is linked with the adjustment assembly 4.

[0058] The assembly notch 24 ensures the stable installation of the brush assembly 3 and the negative pressure hole 21. The assembly support plate 31 of the brush assembly 3 provides an installation carrier for the cleaning brush 32. The root of the cleaning brush 32 is fixed to the assembly support plate 31 by bolts, so as to facilitate the cleaning brush 32 to be disassembled, maintained and replaced.

[0059] The arrangement of the guide through hole 311, guide block 241, assembly through hole 242, and connecting plate 312 ensures that the assembly support plate 31 can slide stably along the radial direction of the processing roller 2.

[0060] To ensure that the negative pressure port 21 can effectively discharge the extracted impurities through the impurity discharge interface 22 and to provide a stable negative pressure environment for the negative pressure port 21, the following technical solution is provided.

[0061] The processing roller 2 has multiple sets of connecting holes 25 arranged in a ring array. The connecting holes 25 are arranged along the length of the processing roller 2 and are connected to the negative pressure hole 21 and the impurity discharge interface 22.

[0062] An assembly cover 51 is fixedly installed on the outer wall of the mounting frame 5. A negative pressure pipe 52 is connected to the assembly cover 51. The discharge port 22 extends to the outside of the mounting frame 5 and is rotatably installed into the assembly cover 51. The negative pressure pipe 52 and the discharge port 22 are kept in communication.

[0063] To facilitate the processing of the holes and pipes on the processing roller 2, the processing roller 2 can be configured as a multi-segment structure arranged along the axial direction, which facilitates the independent processing of each segment of the processing roller 2, and also facilitates the stable assembly of the adjustment component 4 in the processing roller 2.

[0064] The negative pressure connector 52 is used to connect to the negative pressure generated by the exhaust fan so that the scraped impurities are absorbed by the negative pressure hole 21 and move through the connecting hole 25, the impurity discharge port 22, and the negative pressure connector 52 and finally discharged externally.

[0065] The assembly cover 51 can be mounted to the outer wall of the mounting frame 5 by means of bolts, which facilitates its disassembly and maintenance.

[0066] To ensure that the adjustment component 4 can be stably assembled on the processing roller 2 and to achieve synchronous adjustment of the extension and retraction posture of each brush component 3, the following technical solution is provided.

[0067] The adjustment assembly 4 includes a mounting bracket 41, a telescopic shaft 42, a rotating sleeve 43, and a connecting rod 44. The mounting bracket 41 is fixedly installed on the mounting bracket 42 and is slidably inserted into the outer end of the telescopic shaft 42. The axis of the processing roller 2 is provided with a telescopic through hole 26 that communicates with the assembly through hole 242. The telescopic shaft 42 is rotatably installed in the telescopic through hole 26. The rotating sleeve 43 is rotatably installed around the telescopic shaft 42. The connecting rod 44 includes multiple sets and is distributed in a ring array in each set of assembly through holes 242. The two ends of the connecting rod 44 are respectively hinged to the rotating sleeve 43 and the connecting plate 312.

[0068] A guide groove 421 arranged along the length direction is provided on the outer wall of the outer section of the telescopic shaft 42, and a guide sleeve 411 is fixed on the mounting bracket 41 to maintain a sliding connection with the outer section of the telescopic shaft 42. Since the telescopic shaft 42 is slidably connected to the telescopic through hole 26 in the processing roller 2, the operating processing roller 2 will not cause motion interference to the telescopic shaft 42 which maintains axial sliding operation.

[0069] The rotating sleeve 43 is connected to the connecting plate 312 in each brush assembly 3 via the connecting rod 44. Therefore, it will rotate stably along with the processing roller 2. When controlling the telescopic shaft 42 to extend and retract, it can drive the rotating sleeve 43 on it to run synchronously along the axial direction. In turn, the telescopic posture of each brush assembly 3 can be synchronously adjusted through the connecting rod 44.

[0070] To achieve stable extension and retraction of the telescopic shaft 42 and prevent interference with the telescopic shaft 42 when the processing roller 2 is running at high speed, the following technical solution is provided.

[0071] The adjustment assembly 4 also includes an adjustment motor 45, a worm gear 46, and a worm 47. The worm gear 46 is rotatably mounted between the mounting bracket 41 and the processing roller 2. The outer section of the telescopic shaft 42 is provided with a threaded groove that is screwed into the worm gear 46. The adjustment motor 45 is fixedly mounted on the mounting bracket 41 and is poweredly connected to the worm 47. The worm 47 is rotatably mounted on the mounting bracket 41 and is meshed with the worm gear 46.

[0072] When the regulating motor 45 drives the worm gear 47 to rotate, it can reduce the power output of the regulating motor 45 and increase the torque, thereby driving the worm wheel 46 to rotate stably, so as to drive the telescopic shaft 42 connected to it to extend and retract stably along the axial direction, thereby realizing the synchronous adjustment of the telescopic posture of each brush assembly 3.

[0073] Because the worm gear 46 and worm 47 have a unidirectional self-locking characteristic, meaning that power can only be transmitted through the worm 47 to drive the worm gear 46 and cannot be transmitted in the reverse direction, after the adjustment motor 45 completes the adjustment of the extension and retraction posture of the brush assembly 3 and stops, the worm 47 is also in a stationary state. At this time, the worm gear 46 is locked by the worm 47, thereby preventing the extension shaft 42 from being ineffectively displaced due to the interference of the operation of the processing roller 2, so as to improve the continuous stability of the extension and retraction posture of the brush assembly 3.

[0074] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0075] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A surface impurity scraping mechanism for office paper production, characterized in that, include: Guide rollers (1), multiple sets of guide rollers (1) are arranged, and the paper (7) being processed is sequentially transported around each set of guide rollers (1); The processing roller (2) includes two sides arranged on the front and back of the paper (7). The outer surface of the processing roller (2) is provided with a negative pressure hole (21). One end of the processing roller (2) is provided with a waste discharge interface (22). Brush assembly (3), the brush assembly (3) is assembled on the processing roller (2) and distributed in a ring array. The brush assembly (3) moves radially along the processing roller (2) and scrapes off impurities on the surface of the paper (7). Each group of brush assemblies (3) is provided with negative pressure holes (21) on the side used to clean impurities. The negative pressure holes (21) are evenly arranged along the length direction of the processing roller (2). Adjustment component (4) is assembled into the processing roller (2) and is poweredly connected to each group of brush components (3). The adjustment component (4) is used to synchronously control the extension and retraction posture of each group of brush components (3).

2. The surface impurity scraping mechanism for office paper production according to claim 1, characterized in that: It also includes a mounting frame (5) and a drive motor (6). The guide roller (1) and the processing roller (2) are rotatably mounted on the mounting frame (5). The drive motor (6) is fixedly mounted on the mounting frame (5) and two sets of symmetrically arranged drive bevel gears (61) are fixedly connected to the output shaft. Transmission bevel gears (23) are fixedly connected to both sets of processing rollers (2). The two sets of drive bevel gears (61) are respectively engaged with the transmission bevel gears (23) provided on the two sets of processing rollers (2).

3. The surface impurity scraping mechanism for office paper production according to claim 2, characterized in that: The surface of the processing roller (2) has multiple sets of assembly notches (24) arranged in a ring array. The brush assembly (3) includes an assembly support plate (31) and a cleaning brush (32). The assembly support plate (31) has a guide through hole (311). The side wall of the assembly notch (24) is fixedly connected to a guide block (241) that is slidably inserted into the guide through hole (311). The negative pressure hole (21) is located on the bottom wall of the assembly notch (24). The cleaning brush (32) is fixedly installed on the assembly support plate (31) in a detachable manner. The bottom wall of the assembly notch (24) has an assembly through hole (242). The bottom of the assembly support plate (31) is fixedly connected to a connecting plate (312) that is slidably inserted into the assembly through hole (242). The connecting plate (312) is linked with the adjustment assembly (4).

4. The surface impurity scraping mechanism for office paper production according to claim 2, characterized in that: The processing roller (2) has multiple sets of connecting holes (25) arranged in a ring array. The connecting holes (25) are arranged along the length of the processing roller (2) and are connected to the negative pressure hole (21) and the impurity discharge interface (22). An assembly cover (51) is fixedly installed on the outer wall of the mounting frame (5). A negative pressure pipe (52) is connected to the assembly cover (51). The discharge port (22) extends to the outside of the mounting frame (5) and is rotatably installed in the assembly cover (51). The negative pressure pipe (52) and the discharge port (22) are in communication.

5. The surface impurity scraping mechanism for office paper production according to claim 3, characterized in that: The adjustment assembly (4) includes a mounting bracket (41), a telescopic shaft (42), a rotating sleeve (43), and a connecting rod (44). The mounting bracket (41) is fixedly installed on the mounting bracket (41) and is slidably inserted into the outer end of the telescopic shaft (42). The processing roller (2) has a telescopic through hole (26) at its axis that communicates with the assembly through hole (242). The telescopic shaft (42) is rotatably installed in the telescopic through hole (26). The rotating sleeve (43) is rotatably installed around the telescopic shaft (42). The connecting rod (44) includes multiple sets arranged in a ring array in each set of the assembly through holes (242). The two ends of the connecting rod (44) are respectively hinged to the rotating sleeve (43) and the connecting plate (312).

6. The surface impurity scraping mechanism for office paper production according to claim 5, characterized in that: The adjustment assembly (4) also includes an adjustment motor (45), a worm gear (46), and a worm (47). The worm gear (46) is rotatably mounted between the mounting bracket (41) and the processing roller (2). The outer section of the telescopic shaft (42) is provided with a threaded groove that is screwed into the worm gear (46). The adjustment motor (45) is fixedly mounted on the mounting bracket (41) and is poweredly connected to the worm (47). The worm (47) is rotatably mounted on the mounting bracket (41) and is meshed with the worm gear (46).

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