An on-line dryer conditioning machine

Abstract

The utility model belongs to paper production equipment technical field especially relates to an online drying cylinder grinding machine, include: base, base sets up at one side of drying cylinder, axial feed mechanism, axial feed mechanism sets up on the base, radial feed mechanism, radial feed mechanism sets up on axial feed mechanism, grinding mechanism, grinding mechanism sets up on radial feed mechanism, control unit, control unit sets up on the base for control axial feed mechanism, radial feed mechanism and grinding mechanism operation, wherein, axial feed mechanism linearly removes along the direction of parallel drying cylinder axial direction to drive radial feed mechanism axial movement, radial feed mechanism linearly removes along the horizontal radial of drying cylinder to drive grinding mechanism radial movement, relative to prior art, the utility model can effectively improve production efficiency, reduce the loss and grinding cost caused by drying cylinder grinding, and reduce the safety risk in drying cylinder grinding.

Description

Technical Field

[0001] This utility model belongs to the technical field of paper production equipment, and in particular relates to an online drying cylinder grinding machine. Background Technology

[0002] Paper drying cylinders are crucial components of the drying section of paper machines, primarily used to evaporate moisture from the paper sheet to achieve the required dryness for the finished product. After prolonged operation, drying cylinders may experience surface wear, scratches, corrosion, or substandard surface roughness. In such cases, surface resurfacing is necessary. Traditional drying cylinder resurfacing methods require machine shutdown, disassembly, and transport to the workshop for offline resurfacing, resulting in significant downtime and substantial losses. The disassembly, transportation, and offline resurfacing and reinstallation process is complex, involving substantial manpower, resources, hoisting, and specialized equipment, leading to high costs. Furthermore, disassembling and reinstalling large drying cylinders poses safety risks and may cause secondary damage. Therefore, improvements are necessary. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned technical problems by providing an online drying cylinder grinding machine, which effectively reduces the losses and grinding costs caused by drying cylinder grinding, and also reduces the safety risks during the drying cylinder grinding process.

[0004] In view of this, the present invention provides an online drying cylinder grinding machine, comprising: A base, wherein the base is disposed on one side of the drying cylinder; An axial feeding mechanism is mounted on a base. A radial feed mechanism, wherein the radial feed mechanism is mounted on the axial feed mechanism; A grinding mechanism, wherein the grinding mechanism is mounted on the radial feed mechanism; A control unit, mounted on the base, is used to control the operation of the axial feed mechanism, the radial feed mechanism, and the grinding mechanism. The axial feeding mechanism moves linearly along the direction parallel to the axial direction of the drying cylinder to drive the radial feeding mechanism to move axially. The radial feeding mechanism moves linearly along the horizontal radial direction of the drying cylinder to drive the grinding mechanism to move radially. During the movement, the grinding mechanism moves closer to or further away from the surface of the drying cylinder to perform grinding operations.

[0005] In this technical solution, when the drying cylinder needs to be refurbished, there is no need to stop the machine. After reducing the drying cylinder speed, the radial feed mechanism and the axial feed mechanism drive the refurbishing mechanism to approach the drying cylinder surface, thereby performing the refurbishing operation on the drying cylinder surface. Compared with the traditional offline refurbishing which requires disassembling the drying cylinder and transporting it to the workshop, resulting in long downtime, this utility model can perform drying cylinder refurbishing operations online, effectively improving production efficiency. Furthermore, it eliminates the need for disassembling and installing the drying cylinder, reducing the losses and costs caused by drying cylinder refurbishing, and also reducing the safety risks during the drying cylinder refurbishing process.

[0006] In the above technical solution, the axial feeding mechanism further includes: Several axial linear guides are evenly spaced on the upper surface and sides of the base. A sliding plate is disposed on a plurality of axial linear guide rails and is slidably connected to the axial linear guide rails by an axial slider. An axial drive unit is mounted on a base to drive a sliding plate to slide along the length of an axial linear guide rail.

[0007] In the above technical solution, the radial feeding mechanism further includes: A guide rail fixing plate is disposed on the upper surface of the sliding plate; Several radial linear guides are evenly distributed on the upper surface of the guide rail fixing plate; A slider fixing plate is disposed above a plurality of radial linear guide rails, and the slider fixing plate is slidably connected to the radial linear guide rails via radial sliders; A radial drive unit is mounted on a slider fixing plate to drive the slider fixing plate to slide along the length direction of the linear guide rail. The grinding mechanism is mounted on the slider fixing plate.

[0008] In the above technical solution, the grinding mechanism further includes: A polishing motor is mounted on a slider fixing plate, and a polishing wheel is provided on the drive end of the polishing motor. A fixing seat is provided at the end of the grinding motor, and a fastening rod is provided on the fixing seat; A guide wheel, which is rotatably mounted on the top of the fastening rod; The polishing wheel and the guide wheel are fitted with a polishing belt, which rotates with the polishing wheel to perform grinding operations on the surface of the drying cylinder.

[0009] Furthermore, the above technical solution also includes: A belt cleaning unit is mounted on a grinding motor and includes a brush roller that contacts the grinding surface of the belt.

[0010] In the above technical solution, the belt sander further includes: Mounting plate, which is disposed on top of the grinding motor; A roller frame is mounted on a mounting plate, and a roller drive motor is mounted on the roller frame; The brush roller is rotatably mounted on a roller frame and driven to rotate by a roller drive motor.

[0011] Furthermore, the above technical solution also includes: A bellows, which is mounted on a mounting plate, has an air inlet and an air outlet, and contains an exhaust fan. An exhaust pipe is provided on the bellows and connected to the air outlet of the bellows; An air intake pipe is installed on the air box and connected to the air inlet of the air box; The exhaust fan is located between the air inlet and the air outlet, and the exhaust end of the exhaust pipe extends to one side of the brush roller and sprays airflow in the direction of the contact line between the brush roller and the polishing belt.

[0012] In the above technical solution, the intake pipe further includes: An opening and closing damper is provided at the outlet end of the air inlet pipe. A filter screen is disposed at the air inlet end of the air inlet pipe; A blockage sensor is installed at the air inlet end of the air inlet pipe to detect the blockage of the filter screen; The air intake pipe has at least two pipes, and the air inlet of the air box has at least two corresponding to the number of air intake pipes, with the two air intake pipes operating alternately.

[0013] The beneficial effects of this utility model are: 1. Traditional offline grinding requires disassembling the drying cylinder and transporting it to the workshop, resulting in long downtime. This utility model realizes "online grinding", which supports grinding without stopping the machine while the drying cylinder is running at low speed, thus improving production efficiency.

[0014] 2. Traditional grinding involves disassembly, hoisting, transportation, and reassembly, resulting in high overall costs. This invention eliminates the need for hoisting and transportation, and reduces equipment installation and commissioning costs, effectively lowering overall costs. Furthermore, the sanding belt cleaning unit extends the lifespan of the sanding belt, further reducing consumable costs.

[0015] 3. Traditional large drying cylinders pose a risk of tipping over and secondary damage during disassembly and hoisting; this utility model eliminates the need for disassembly and hoisting, resulting in a low secondary damage rate and reducing safety risks during drying cylinder repair and grinding. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model.

[0018] Figure 2 This is a side view structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the grinding mechanism of this utility model.

[0020] Figure 4 This is a schematic diagram of the sanding belt cleaning unit structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the brush roller of this utility model.

[0022] Figure 6 This is a schematic diagram of the bellows structure of this utility model.

[0023] The markings in the diagram are as follows: 1. Base; 2. Axial feed mechanism; 20. Axial linear guide; 21. Sliding plate; 22. Axial drive unit; 23. Axial slider; 3. Radial feed mechanism; 30. Guide rail fixing plate; 31. Radial linear guide; 32. Slider fixing plate; 33. Radial drive unit; 34. Radial slider; 4. Grinding mechanism; 40. Grinding motor; 41. Polishing wheel; 42. Fixing seat; 43. Fastening rod; 44. Guide wheel; 45. Polishing sanding belt; 5. Sanding belt cleaning unit; 50. Brush roller; 51. Mounting plate; 52. Roller frame; 53. Roller drive motor; 6. Air box; 7. Exhaust fan; 8. Exhaust pipe; 9. Inlet pipe; 90. Opening and closing damper; 91. Filter screen; 92. Blockage sensor; 10. Drying cylinder; 11. Key; 12. Roller core. Detailed Implementation

[0024] 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.

[0025] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] Base 1 The base 1 is welded from Q235 carbon structural steel and is a rectangular frame structure adapted to the length of the drying cylinder 10. The frame is reinforced with cross-shaped ribs to improve its resistance to deformation. Multiple sets of leveling bolts are set at the four corners and the midpoint of the long side of the bottom of the base 1. The levelness error of the upper surface is ensured to meet the high-precision assembly requirements by calibrating with a level. The base 1 is fixed to the concrete foundation (concrete strength grade C30) on one side of the drying cylinder 10 by multiple sets of expansion bolts to ensure that it will not loosen during long-term use. An electrical box bracket is welded to the side of the base 1 to fix the control unit. The upper surface is symmetrically provided with guide rail mounting grooves along the axial direction to ensure the installation accuracy of the axial linear guide rail 20.

[0027] Axial feed mechanism 2 Several axial linear guides 20: 3 THKSSR20 high-precision linear guides (precision grade C3), of which 2 are arranged parallel to each other on the upper surface of base 1, and 1 is arranged perpendicularly on one side of base 1, forming a three-dimensional guiding structure to improve motion stability; the slider has a built-in double-row ball circulation structure, the rated dynamic load meets the equipment operation requirements, and the friction coefficient is ≤0.001, ensuring low-resistance and smooth movement; it is fixed in the mounting groove of base 1 by countersunk bolts of appropriate specifications. After installation, it is inspected with a laser interferometer to ensure that the parallelism error of the 3 guides is ≤0.1mm / m and the straightness error meets the high-precision motion requirements.

[0028] The sliding plate 21 is made of Q345 low alloy steel plate, and the surface is rough milled and then sprayed with anti-rust paint to balance rigidity and rust prevention performance. The bottom of the sliding plate 21 is rigidly connected to the axial slider 23 by an internal hex bolt of appropriate specification. The bolts are evenly distributed and tightened to the specified torque to ensure uniform force distribution. A through hole is opened in the middle of the sliding plate 21 to cooperate with the output end of the reducer of the axial drive unit 22. The roughness of the hole wall meets the assembly requirements, and a reasonable gap is reserved to avoid motion interference.

[0029] The axial drive unit 22 (rack and pinion drive structure) includes an axial rack: 45 steel heat-treated (HB220-250), module 2mm, tooth surface high-frequency quenched (HRC50-55), fixed to the center of the upper surface of the base 1 by adapter bolts; gear: 20CrMnTi carburized and quenched (HRC58-62), module 2mm, with a meshing clearance of 0.1-0.15mm to ensure smooth transmission; reducer: RV040 type worm gear reducer (reduction ratio 1:50, backlash ≤3arcmin), fixed to the upper surface of the sliding plate 21 by adapter bolts; drive motor: Y90L-4 type three-phase asynchronous motor (power 1.5kW, speed 1440rpm), equipped with a frequency converter to achieve stepless speed regulation from 0-50Hz; transmission path: motor output shaft → reducer input end → reducer output shaft → gear rotation → gear meshing with fixed rack to generate axial driving force → sliding plate 21 moves along guide rail; It also includes conventional auxiliary function components, such as grating ruler positioning: a high-precision grating ruler (resolution 0.001mm) is installed on the side of the base 1, and the reading head is fixed on the side of the sliding plate 21 to provide real-time feedback of the position signal to the control unit; buffer protection: hydraulic buffers are installed at both ends of the sliding plate 21 to avoid collision with the end of the base 1; drag chain system: a drag chain is installed on one side of the base 1, with built-in axial drive motor cable and grating ruler signal line to prevent cable entanglement and wear.

[0030] Radial feed mechanism 3 The radial feed mechanism 3 includes a guide rail fixing plate 30 and a radial linear guide rail 31. The guide rail fixing plate 30 is made of Q345 steel plate and is fixed to the upper surface of the sliding plate 21 with bolts of appropriate specifications and specified torque. After installation, the flatness error meets the high-precision assembly requirements. The radial linear guide rail 31 consists of two THKSSR16 type linear guide rails (precision grade C3) arranged in parallel on the upper surface of the guide rail fixing plate 30. Each guide rail is equipped with two sliders, and the rated dynamic load meets the radial motion requirements.

[0031] The slider fixing plate 32 is made of Q345 steel plate. The bottom is connected to 4 radial sliders 34 by adapter bolts, and the top is reserved with a grinding motor 40 mounting hole. The slider fixing plate 32 is reinforced with angle steel welded to the edge to improve torsional stiffness and ensure that the deflection meets the accuracy requirements when moving radially.

[0032] The radial drive unit 33 (rack and pinion drive structure) includes a radial rack: 45 steel with heat treatment, module 1.5mm, tooth surface hardened to HRC50-55; gear: 20CrMnTi carburized and quenched (HRC58-62), module 1.5mm; reducer: RV030 type worm gear reducer (reduction ratio 1:30, backlash ≤5arcmin); drive motor: Y80M1-4 type motor (power 0.75kW, speed 1390rpm), with a matching frequency converter to achieve speed regulation; the radial rack is fixed in the center of the guide rail fixing plate 30, and the reducer and motor are fixed to the upper surface of the slider fixing plate 32 by matching bolts, and the meshing clearance between the gear and the rack is controlled at 0.08-0.12mm; It also includes pressure and position control components, pressure sensor: a high-precision weighing sensor (accuracy 0.1%FS), which is installed on the side of the slider fixing plate 32 via an L-shaped bracket. The sensing end is in contact with the guide wheel 44 of the grinding mechanism 4 to detect the contact pressure between the sanding belt and the drying cylinder 10 in real time (default control is 50±5N); anti-collision sensor: a photoelectric sensor (detection distance meets safety requirements), installed on the side of the slider fixing plate 32 near the drying cylinder 10. When the distance is too close, it outputs a stop signal; limit switch: two limit switches (installed at both ends of the guide rail fixing plate 30 respectively) to limit the maximum movement range of the slider fixing plate 32.

[0033] Grinding mechanism 4 The grinding motor 40 and the polishing wheel 41 are as follows: Grinding motor 40: Y132M-4 type three-phase asynchronous motor (power 7.5kW, speed 1440rpm, insulation class F), which is fixed to the upper surface of the slider fixing plate 32 with bolts of appropriate specifications and torque specified. The motor shaft end is provided with a standard key 11 groove; Polishing wheel 41: made of 6061 aluminum alloy, with sanding belt positioning grooves opened in the circumferential direction on the surface, and is rigidly fixed to the motor shaft by key 11 connection. The end face runout meets the requirements of high-precision operation.

[0034] The assembly consists of a fixed base 42 and a fastening rod 43. The fixed base 42 is made of HT200 gray cast iron and is fixed to the front cover of the grinding motor 40 with matching bolts. The coaxiality error with the motor shaft meets the assembly requirements. The fastening rod 43 is made of 45 steel with heat treatment and is fixed to the fixed base 42 with an angle steel extension arm (welded reinforcing rib). The perpendicularity error meets the assembly accuracy. The tension adjustment structure is as follows: a roller seat (made of HT150) is installed at the top of the fastening rod 43, with a built-in compression spring (the elastic coefficient meets the tension requirements). The tension of the sanding belt can be adjusted by adjusting the height of the roller seat.

[0035] Guide roller 44 and abrasive belt: Guide roller 44: made of polyurethane (Shore hardness A90), with a high-precision deep groove ball bearing built into the hub, mounted on the roller seat via the roller shaft, ensuring smooth rotation and low resistance; Abrasive belt: alumina-coated abrasive belt (240 mesh), with a polyester fiber base (tensile strength ≥200N / mm²).2 It is fitted between the polishing wheel 41 and the guide wheel 44, and the deflection after tensioning meets the requirements for stable operation.

[0036] It also has conventional grinding condition monitoring components, including a laser roughness sensor: a high-precision series sensor (measuring range and resolution meet grinding accuracy requirements), mounted on the slider fixing plate 32 via a bracket, with the detection direction perpendicular to the surface of the drying cylinder 10 and a sampling frequency of 100Hz; an infrared thermometer: the range and accuracy meet the temperature monitoring requirements of the drying cylinder 10, mounted on the guide wheel 44 bracket, to monitor the grinding temperature of the surface of the drying cylinder 10 in real time (control threshold ≤80℃); and a sanding belt deviation sensor: two photoelectric sensors (detection distance meets monitoring requirements), symmetrically mounted on both sides of the fixing base 42, to monitor the edge position of the sanding belt (allowable deviation ±5mm).

[0037] Belt cleaning unit 5 Mounting plate 51 and roller frame 52: Mounting plate 51: 6061 aluminum alloy plate, fixed to the mounting platform on top of the grinding motor 40 by adapter bolts (welded to the motor housing, flatness meets assembly requirements); Roller frame 52 structure: Vertical support arm: square steel material, welded to the center of mounting plate 51, with triangular reinforcing ribs welded to the bottom; Horizontal telescopic arm: composed of a fixed tube and a moving rod (surface tapped), length adjustment is achieved through threaded connection, and the end of the moving rod is rotatably connected to the roller mounting block; Roller mounting block: aluminum alloy material, connected to the vertical support arm through a telescopic rod to achieve circumferential positioning.

[0038] The brush roller 50 and drive assembly: Brush roller 50 is made of flexible filament material such as nylon, pig bristles, or carbon fiber (filament diameter and density meet cleaning requirements), and has a key 11 groove in its inner hole, which mates with the roller core 12; Roller core 12 is made of 45 steel with heat treatment, one end is mounted on the roller mounting block via a deep groove ball bearing, and the other end is connected to the roller drive motor 53 via a coupling; Roller drive motor 53 is a Y80M1-2 type motor (power 0.75kW, speed 2840rpm), which is fixed to the side of the roller mounting block with adapter bolts, and its rotation direction is opposite to that of the sanding belt (to improve cleaning efficiency). The air box 6 and air circuit system: Air box 6: 304 stainless steel welded structure, fixed to the mounting plate 51 by adapter bolts, with an exhaust fan 7 installed inside (power and air volume meet cleaning requirements); Air inlet pipe 9: multiple PVC pipes, one end connected to the air inlet (flange connection) of air box 6, and the other end installed with a stainless steel filter screen 91 (filtration accuracy meets air intake cleanliness requirements); The blockage sensor 92 can be a differential pressure sensor or a flow sensor. In this embodiment, a differential pressure sensor (range meets blockage monitoring requirements) is installed inside the filter screen 91; Exhaust pipe 8: transparent flexible tube, one end connected to the air outlet (flange connection) of air box 6, and the other end installed with a universal bamboo joint tube (can rotate 360°), the outlet is aligned with the contact line between the brush roller 50 and the sanding belt, and the airflow speed meets the requirements for abrasive debris removal; Air damper control: an electric air damper is installed in the middle of the air inlet pipe 9, and the opening degree (0-100%) is controlled by the control unit PWM signal to realize air volume adjustment.

[0039] Control Unit Hardware configuration: Main controller: Siemens S7-1214CPLC (DC / DC / DC type, input / output channels meet equipment requirements), extended analog input module (channel number and accuracy meet testing requirements); Human-machine interface: Weintek TK6071IP touch screen (size and resolution meet operation requirements), supports parameter setting, status display, and fault alarm; Drive module: Axial / radial motor with matching frequency converter (power matches motor requirements), 40mm grinding motor with matching contactor; Sensor interface: grating ruler (RS485), laser roughness tester (USB), pressure / temperature sensor (4-20mA), connected to PLC through signal isolator to ensure signal stability.

[0040] The software's functional modules include a parameter setting module that supports saving 10 sets of process parameters (axial / radial speed, contact pressure, target roughness, etc.) and is compatible with 10 different drying cylinder specifications. The automatic operation module executes the grinding process according to steps S1-S3, including radial positioning → sanding belt start → axial feed → accuracy detection → reset and stop. Monitoring and alarm module: Real-time display of equipment status (position, pressure, temperature, roughness). When faults such as sanding belt breakage (sudden drop in guide wheel speed 44) ​​or filter screen 91 blockage (excessive differential pressure) occur, the machine will be stopped immediately and handling suggestions will be displayed. Data recording module: Automatically stores the time of each grinding, the number of drying cylinder 10, and the roughness change curve. It supports exporting to Excel format via USB flash drive.

[0041] The entire process of grinding Taking shallow wear on the surface of drying cylinder 10 (initial roughness Ra 2.5μm) as an example, the complete operation process is as follows: S1: Radial feed positioning Operating steps: Select the parameter group for the matching drying cylinder 10 and sanding belt on the touch screen → Click "Start" → The radial drive motor rotates forward, and the slider fixing plate 32 moves towards the drying cylinder 10; Control logic: The pressure sensor provides real-time feedback on the contact pressure. When the pressure reaches 50N, the PLC outputs a stop signal, and the radial motor stops (at this time, the sanding belt is in contact with the surface of the drying cylinder 10). Auxiliary monitoring: The laser roughness sensor simultaneously detects the initial roughness (Ra2.5μm) as a grinding reference.

[0042] S2: Grinding mechanism 4 activated Execution sequence: PLC automatically starts the grinding motor 40 → after delay, starts the roller drive motor 53 and the exhaust fan 7; Sanding belt operation: Polishing wheel 41 drives sanding belt to rotate at a specified linear speed. Guide wheel 44 keeps sanding belt taut under spring tension. Infrared thermometer starts monitoring the surface temperature of drying cylinder 10 (initially within the normal range).

[0043] S3: Axial feed grinding Axial movement: The PLC starts the axial drive motor, and the sliding plate 21 moves along the axis of the drying cylinder 10 at a set speed, and the grinding mechanism 4 starts continuous grinding. Precision closed-loop: The laser sensor detects roughness at a set frequency. When Ra>0.8μm in a certain area, the PLC controls the radial motor to advance slightly to increase pressure; when Ra≤0.8μm, the radial motor retreats slightly to decrease pressure. Cleaning coordination: The brush roller 50 rotates to remove abrasive debris from the sand belt, the airflow from the exhaust pipe 8 blows away the abrasive debris, and the differential pressure sensor monitors the status of the filter screen 91 in real time (normal differential pressure meets the set range).

[0044] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An online cylinder drying and grinding machine, characterized in that, include: A base (1) is disposed on one side of the drying cylinder (10); An axial feeding mechanism (2) is mounted on a base (1); A radial feed mechanism (3) is provided on the axial feed mechanism (2); A grinding mechanism (4) is provided on the radial feed mechanism (3); A control unit is mounted on a base (1) for controlling the operation of the axial feed mechanism (2), the radial feed mechanism (3), and the grinding mechanism (4); The axial feeding mechanism (2) moves linearly along the direction parallel to the axial direction of the drying cylinder (10) to drive the radial feeding mechanism (3) to move axially. The radial feeding mechanism (3) moves linearly along the horizontal radial direction of the drying cylinder (10) to drive the grinding mechanism (4) to move radially. The grinding mechanism (4) moves closer to or further away from the surface of the drying cylinder (10) during the movement to perform grinding operations.

2. The online cylinder drying and grinding machine according to claim 1, characterized in that, The axial feed mechanism (2) further includes: Several axial linear guides (20) are evenly spaced on the upper surface and side surface of the base (1). A sliding plate (21) is disposed on a plurality of axial linear guides (20) and is slidably connected to the axial linear guides (20) by an axial slider (23); An axial drive unit (22) is mounted on a base (1) to drive a sliding plate (21) to slide along the length of an axial linear guide rail (20).

3. The online cylinder drying and grinding machine according to claim 2, characterized in that, The radial feed mechanism (3) further includes: A guide rail fixing plate (30) is disposed on the upper surface of the sliding plate (21); Several radial linear guides (31) are evenly distributed on the upper surface of the guide rail fixing plate (30); A slider fixing plate (32) is disposed above a plurality of radial linear guide rails (31), and the slider fixing plate (32) is slidably connected to the radial linear guide rails (31) through a radial slider (34); A radial drive unit (33) is provided on a slider fixing plate (32) for driving the slider fixing plate (32) to slide along the length direction of the linear guide rail; The grinding mechanism (4) is mounted on the slider fixing plate (32).

4. The online cylinder drying and grinding machine according to claim 3, characterized in that, The grinding mechanism (4) also includes: A polishing motor (40) is mounted on a slider fixing plate (32), and a polishing wheel (41) is mounted on the drive end of the polishing motor (40). A fixing seat (42) is provided at the end of the grinding motor (40), and a fastening rod (43) is provided on the fixing seat (42); A guide wheel (44) is rotatably mounted on the top of a fastening rod (43); Among them, a polishing belt (45) is sleeved between the polishing wheel (41) and the guide wheel (44). The polishing belt (45) rotates with the polishing wheel (41) to perform grinding operations on the surface of the drying cylinder (10).

5. The online cylinder drying and grinding machine according to claim 4, characterized in that, The description also includes: A belt cleaning unit (5) is mounted on a grinding motor (40) and includes a brush roller (50) that contacts the grinding surface of the belt.

6. The online cylinder drying and grinding machine according to claim 5, characterized in that, The belt cleaning unit (5) also includes: Mounting plate (51), which is disposed on top of grinding motor (40); A roller frame (52) is mounted on a mounting plate (51), and a roller drive motor (53) is mounted on the roller frame (52). The brush roller (50) is rotatably mounted on the roller frame (52) and driven to rotate by the roller drive motor (53).

7. The online cylinder drying and grinding machine according to claim 6, characterized in that, Also includes: A bellows (6) is mounted on a mounting plate (51). The bellows (6) has an air inlet and an air outlet. An exhaust fan (7) is installed in the bellows (6). An exhaust pipe (8) is provided on the bellows (6) and communicates with the air outlet of the bellows (6); An air intake pipe (9) is provided on the air box (6) and connected to the air inlet of the air box (6); The exhaust fan (7) is located between the air inlet and the air outlet, and the exhaust end of the exhaust pipe (8) extends to one side of the brush roller (50) and sprays airflow in the direction of the contact line between the brush roller (50) and the polishing belt (45).

8. The online cylinder drying and grinding machine according to claim 7, characterized in that, The intake pipe (9) also includes: An opening and closing damper (90) is provided at the outlet end of the air inlet pipe (9); A filter (91) is provided at the air inlet end of the air inlet pipe (9); A blockage sensor (92) is provided at the air inlet end of the air inlet pipe (9) to detect the blockage of the filter screen (91); The air intake pipe (9) has at least two pipes, and the air inlet of the air box (6) has at least two corresponding to the number of air intake pipes (9). The two air intake pipes (9) operate alternately.

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