Crankshaft chain wheel anti-permeation coating cleaning equipment

Abstract

The application discloses a kind of crankshaft chain wheel anti-infiltration coating cleaning equipment, it is related to crankshaft cleaning equipment technical field, including composite brush mechanism, composite brush mechanism includes first brush and second brush;The axis of first brush is parallel with the axis of chain wheel, and the circumferential of chain wheel is tangent to first brush when brushing, and the circumferential of chain wheel is brushed;The axis of second brush is perpendicular to the axis of chain wheel and is out of plane, and the axial of chain wheel is tangent to second brush when brushing, and the axial of chain wheel is brushed.The technical scheme effectively solves the problem that the anti-infiltration coating sintered on chain wheel cannot be completely removed in prior art.

Description

Technical Field

[0001] This invention relates to the field of crankshaft cleaning equipment technology, and in particular to a crankshaft sprocket anti-seepage coating cleaning equipment. Background Technology

[0002] Before nitriding heat treatment, the timing sprocket area of ​​the crankshaft needs to be coated with an anti-seepage coating to protect the sprocket tooth surface from nitriding. After the nitriding treatment is completed, the anti-seepage coating adhering to the sprocket surface and tooth root and tooth groove gap will be sintered and cured, and must be completely removed, otherwise it will affect the quality of subsequent machining and surface treatment.

[0003] Currently, the main methods for removing anti-seepage coating from sprockets include spray cleaning, immersion cleaning, or manual cleaning. Spray cleaning relies on high-pressure jets to impact the coating layer. However, the jets act in a single direction, limiting their ability to peel off sintered and firmly adhered coatings. Furthermore, it is difficult to penetrate narrow gaps such as tooth roots and grooves, leaving a large amount of coating residue in these gaps, often requiring secondary manual cleaning, which is inefficient. Immersion cleaning can soften the coating as a whole, but the equipment is large and consumes a lot of chemicals, and it is still not thorough in removing solidified coatings from narrow gaps. Manual cleaning is labor-intensive, inefficient, and the cleaning quality depends on the operator's experience, making it difficult to guarantee consistent quality. Summary of the Invention

[0004] This invention provides a crankshaft sprocket anti-seepage coating cleaning device, which aims to solve the technical problem that existing technologies are unable to completely remove the sintered and solidified anti-seepage coating on the sprocket.

[0005] To achieve the above objectives, the present invention provides a crankshaft sprocket anti-seepage coating cleaning device, including a composite brush mechanism, wherein the composite brush mechanism includes two sets of brushes, namely a first brush and a second brush. The axis of the first brush is parallel to the axis of the sprocket. During brushing, the first brush is tangent to the circumference of the sprocket, and the sprocket is brushed in a circumferential direction. The axis of the second brush is perpendicular to and out of plane with the axis of the sprocket. During brushing, the second brush is tangent to the axis of the sprocket and performs axial brushing on the sprocket.

[0006] The sprocket is mechanically brushed by a composite brush mechanism, which has a strong ability to peel off firmly attached coatings. It can effectively remove the sintered and cured anti-seepage coatings from the surface of the sprocket and the tooth roots and tooth grooves, solving the problem of incomplete removal of cured coatings.

[0007] The first brush, positioned tangentially to the sprocket's circumference, cleans the circumferential surface of the sprocket, removing sintered coating adhering to the sprocket teeth. The second brush, positioned tangentially to the sprocket's axis, reaches into narrow axial gaps such as tooth roots and grooves, cleaning the coating within these gaps and on the sprocket's axial surface. These two sets of brushes cover the circumferential surface and axial gaps of the sprocket, leaving no blind spots and ensuring high cleaning efficiency.

[0008] Preferably, the composite brush mechanism further includes a brush power element and a guide rod cylinder. The brush power element drives the brush to rotate, and the guide rod cylinder drives the brush power element and the brush to reciprocate between a working position and an original position. When the brush is in the working position, the brush contacts the sprocket for brushing, and when the brush is in the original position, the brush disengages from the sprocket.

[0009] The brush power element drives the brush to rotate, and the guide rod cylinder drives the brush to reciprocate between the working position and the original position. When the brush does not need to be cleaned, it can be retracted to avoid affecting the crankshaft's position change.

[0010] Preferably, it also includes a loading and unloading station, a brushing station, a cleaning station, a visual inspection station, and a rotary table. The four stations are arranged in a clockwise direction, and the rotary table passes through the four stations in sequence during its clockwise rotation.

[0011] The rotary table rotates clockwise, driving the crankshaft through the loading and unloading station, brushing station, cleaning station and visual inspection station in sequence, which can continuously complete the loading, unloading, brushing, cleaning and inspection operations, thus improving cleaning efficiency.

[0012] Preferably, the rotary table includes four sets of tooling fixtures, each set of tooling fixtures including a front center, a rear center, and a clamping cylinder; the front center and the rear center are coaxial, the front center is located at one end close to the center of the rotary table, and the rear center is located at one end away from the center of the rotary table; the clamping cylinder can drive the rear center to reciprocate axially, for clamping the crankshaft between the front center and the rear center, or removing the crankshaft from between the front center and the rear center.

[0013] The front and rear centers are arranged coaxially and mate with the center hole of the crankshaft, which can reliably position the crankshaft on the rotary table. The positioning reference is consistent with the machining reference of the crankshaft, resulting in good positioning consistency. The clamping cylinder drives the rear center to reciprocate axially, which can automatically clamp and release the crankshaft, which is conducive to realizing automated loading and unloading.

[0014] Preferably, the tooling fixture further includes a rear center seat, a linear guide rail, a slider, and a locking mechanism; the rear center is mounted on the rear center seat, the rear center seat is mounted on the slider, the slider slides in cooperation with the linear guide rail, and the locking mechanism is used to lock and position the rear center seat.

[0015] The rear center seat drives the rear center to slide along the linear guide rail, which can adjust the position of the rear center according to the length of the crankshaft. The locking mechanism locks and positions the rear center seat, so that the tooling fixture can be adapted to crankshafts of different lengths, improving the versatility of the equipment.

[0016] Preferably, it further includes a part rotation mechanism, which includes a reduction motor and a bevel gear set; the reduction motor drives the four front centers to rotate around their own axis through the bevel gear set, thereby causing the crankshaft clamped between the front centers and the rear centers to rotate around its own axis.

[0017] The geared motor drives four front centers to rotate around their own axis via a bevel gear set, which in turn drives the crankshaft clamped between the front and rear centers to rotate around its own axis. The circumference of the sprocket can be completely brushed, cleaned, and inspected. One geared motor drives the crankshafts of four stations to rotate synchronously, reducing the number of drive components and lowering equipment costs.

[0018] Preferably, the system further includes a protective cover disposed at the cleaning station. The protective cover includes a vertically arranged partition and a drive cylinder. The lower end of the partition has a slot. During cleaning, the drive cylinder drives the partition to descend, so that the slot is engaged on the crankshaft, separating the cleaning position from the non-cleaning position. After cleaning, the drive cylinder drives the partition to rise, so that the slot is disengaged from the crankshaft.

[0019] During cleaning, the protective cover separates the cleaning area from the non-cleaning area, and the sprayed cleaning fluid is confined within the cleaning area, making it less likely to splash onto the crankshaft's main journal, connecting rod journal, and other parts, thus reducing the risk of corrosion of the non-cleaning parts of the crankshaft by the cleaning fluid; after cleaning, the partition rises and the slot exits the crankshaft, without affecting the changeover of work positions.

[0020] Preferably, the system further includes a cleaning fluid circulation system, which includes a water tank, a high-pressure cleaning pump, and a filter device. The high-pressure cleaning pump pressurizes the cleaning fluid in the water tank and sprays it onto the sprocket. The sprayed cleaning fluid then flows back to the water tank. The filter device is used to filter the cleaning fluid.

[0021] The high-pressure cleaning pump pressurizes the cleaning fluid in the water tank and sprays it onto the sprocket to perform a high-pressure rinse on the brushed sprocket. The sprayed cleaning fluid is then filtered by the filter device and returned to the water tank. The cleaning fluid can be recycled, reducing the consumption of cleaning fluid.

[0022] Preferably, the brushing station is equipped with a dust removal system, which is used to collect paint dust generated during brushing.

[0023] The dust removal system collects paint dust generated during brushing, reducing the spread of paint dust within the equipment.

[0024] Preferably, the visual inspection station is equipped with a CCD visual inspection unit, which takes pictures of the cleaned sprocket and identifies any remaining anti-seepage coating.

[0025] The CCD vision inspection unit photographs and identifies residual anti-seepage coating on the cleaned sprockets, enabling timely detection of sprockets that have not been thoroughly cleaned, thus improving the automation and efficiency of the inspection. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a top view of the crankshaft sprocket anti-seepage coating cleaning equipment provided in an embodiment of the present invention. The composite brush mechanism is not shown in the figure.

[0028] Figure 2 This is a front view of the crankshaft sprocket anti-seepage coating cleaning equipment provided in an embodiment of the present invention.

[0029] Figure 3 This is a rear view of the crankshaft sprocket anti-seepage coating cleaning equipment provided in an embodiment of the present invention. The composite brush mechanism and CCD vision inspection unit are not shown in the figure.

[0030] Figure 4 This is a schematic diagram of the composite brush mechanism provided in the embodiment of the present invention in its original position.

[0031] Figure 5 This is a schematic diagram of the composite brush mechanism provided in the embodiment of the present invention in the working position.

[0032] Figure 6 This is a side sectional view of the protective cover provided in an embodiment of the present invention.

[0033] Figure 7 This is a front view of the protective cover provided in an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures: 1. Crankshaft, 2. Sprocket, 3. First brush, 4. Second brush, 5. Brush power element, 6. Guide rod cylinder, 7. Loading and unloading station, 8. Brush removal station, 9. Cleaning station, 10. Visual inspection station, 11. Rotary worktable, 12. Cylinder fixing plate, 13. Protective plate, 14. Front center, 15. Rear center, 16. Clamping cylinder, 17. Drive device, 18. Table surface, 19. Mounting base, 20. Tooling base plate, 21. Rear center seat, 22. Linear guide rail, 23. Slider, 24. Locking mechanism, 25. Gear reducer, 26. Drive bevel gear, 27. Driven bevel gear, 28. Front center seat, 29. Lever, 30. Protective cover, 31. Partition, 32. Drive cylinder, 33. Groove, 34. Spray assembly, 35. CCD camera, 36. Camera fixing plate. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] refer to Figure 4 and Figure 5 In some embodiments, the crankshaft sprocket anti-seepage coating cleaning equipment includes a composite brush mechanism, which comprises a first brush 3 and a second brush 4. Both the first brush 3 and the second brush 4 are used to brush the sprocket 2 to remove the sintered and cured anti-seepage coating from the surface of the sprocket 2 and from the tooth roots and tooth grooves. The first brush 3 and the second brush 4 are arranged at intervals in the circumferential direction of the sprocket 2 to avoid interference between the two brushes.

[0038] The axis of the first brush 3 is parallel to the axis of the sprocket 2. During brushing, the first brush 3 is tangential to the circumference of the sprocket 2, performing circumferential brushing on the sprocket 2. For example, the first brush 3 is a cylindrical brush, with its rotation axis parallel to the axis of the sprocket 2. The outer circumferential surface of the first brush 3 is in tangential contact with the circumferential surface of the sprocket 2. When the first brush 3 rotates, the bristles brush the tooth surface and tooth tip surface of the sprocket 2 along its circumferential direction, removing the anti-seepage coating distributed on the circumferential surface of the sprocket 2. During brushing, the movement direction of the bristles of the first brush 3 is consistent with the tangential direction of the circumferential surface of the sprocket 2. The bristles act on the coating layer in a tangential scraping manner, providing a good peeling effect on firmly adhered sintered coatings.

[0039] The axis of the second brush 4 is perpendicular to and out of plane with the axis of the sprocket 2. During brushing, the second brush 4 is tangent to the axis of the sprocket 2, and performs axial brushing on the sprocket 2. For example, the second brush 4 is a cylindrical brush. The axis of the second brush 4 is perpendicular to the axis of the sprocket 2 in space and is not in the same plane. The outer peripheral surface of the second brush 4 is tangent to the axis of the sprocket 2. When the second brush 4 rotates, the bristles extend into the narrow gaps extending along the axial direction, such as the tooth root and tooth groove, and brush the paint in the gaps and the paint on the surface of the sprocket 2 in the axial direction.

[0040] The first brush 3 and the second brush 4 brush the sprocket 2 from two mutually perpendicular directions, circumferential and axial. The two brushing directions complement each other and cover the circumferential and axial surfaces of the sprocket 2, leaving no dead corners. The anti-seepage coating in the tooth root and tooth groove gaps can be removed.

[0041] For example, both the first brush 3 and the second brush 4 are silicon carbide brushes. The hardness of silicon carbide bristles is higher than the hardness of the cured geomembrane, enabling them to scrape off the sintered, cured, and firmly adhered geomembrane. Alternatively, the bristles of the first brush 3 and the second brush 4 can also be made of nylon. Nylon bristles have better elasticity and are suitable for conditions where the adhesion of the geomembrane is relatively weak. The specific specifications of the first brush 3 and the second brush 4 can be determined according to the size of the sprocket 2 and the degree of adhesion of the geomembrane.

[0042] It should be noted that the brushing action of the first brush 3 and the second brush 4 can be performed simultaneously or sequentially. For example, the first brush 3 and the second brush 4 can simultaneously contact the sprocket 2, performing circumferential and axial brushing concurrently; or, the first brush 3 can first brush the sprocket 2 circumferentially, and then the second brush 4 can brush the sprocket 2 axially, removing the anti-seepage coating from different directions of the sprocket 2 step by step. The contact pressure between the brushes and the sprocket 2 can be adjusted by adjusting the installation position of the brushes; increased contact pressure enhances the scraping effect on firmly adhered coatings.

[0043] In some embodiments, the composite brush mechanism further includes a brush power element 5 and a guide rod cylinder 6. The brush power element 5 drives the brush to rotate, and the guide rod cylinder 6 drives the brush power element 5 and the brush to reciprocate between a working position and a back position. When the brush is in the working position, the brush contacts the sprocket 2 for brushing; when the brush is in the back position, the brush disengages from the sprocket 2.

[0044] For example, the brush power element 5 is mounted on the mounting plate, and the brush is fixedly connected to the output end of the brush power element 5. When the brush power element 5 operates, it drives the brush to rotate around its own axis. The cylinder body of the guide rod cylinder 6 is fixedly mounted, and the piston rod of the guide rod cylinder 6 is connected to the mounting plate. When the piston rod extends, the mounting plate drives the brush power element 5 and the brush to move towards the sprocket 2, and the brush enters the working position; when the piston rod retracts, the mounting plate drives the brush power element 5 and the brush to move away from the sprocket 2, and the brush returns to its original position. For example, the brush power element 5 is a servo motor, and the speed of the servo motor is adjustable, which can adjust the speed of the brush according to the adhesion degree of the anti-seepage coating. Optionally, the brush power element 5 can also be an asynchronous motor or a hydraulic motor. For example, the output shaft of the brush power element 5 is directly coaxially fixedly connected to the brush, and the brush power element 5 directly drives the brush to rotate when it is running; optionally, a belt drive mechanism or a chain drive mechanism can also be provided between the brush power element 5 and the brush, and the brush power element 5 drives the brush to rotate through the drive mechanism.

[0045] It should be noted that the first brush 3 and the second brush 4 are respectively equipped with brush power element 5 and guide rod cylinder 6. The first brush 3 and the second brush 4 are driven by their respective brush power element 5. The rotation speed of the two sets of brushes can be adjusted separately without interfering with each other. The first brush 3 and the second brush 4 are driven by their respective guide rod cylinder 6. The forward and backward movements of the two sets of brushes are independent of each other.

[0046] When the brush is in the working position, it contacts the sprocket 2 for brushing. When it is in the original position, it disengages from the sprocket 2. During the switching process of the sprocket 2, the brush retracts to the original position and will not interfere with the sprocket 2.

[0047] refer to Figures 1 to 3 In some embodiments, the crankshaft sprocket anti-seepage coating cleaning equipment includes a loading and unloading station 7, a brushing station 8, a cleaning station 9, a visual inspection station 10, and a rotary table 11. The four stations are arranged in a clockwise direction, and the rotary table 11 passes through the four stations in sequence during clockwise rotation.

[0048] For example, four workstations are evenly arranged around the center of the rotary table 11, with an included angle of 90 degrees between any two adjacent workstations. The loading / unloading workstation 7 is used for the installation and removal of the crankshaft 1; a composite brush mechanism is installed at the brushing workstation 8 for brushing the sprocket 2. For example, the brushing workstation 8 is equipped with a cylinder fixing plate 12, and the guide rod cylinder 6 is fixed to the cylinder fixing plate 12; the cleaning workstation 9 is used for spray cleaning of the sprocket 2; and the visual inspection workstation 10 is used for photographic inspection of the cleaned sprocket 2. After the crankshaft 1 is clamped on the rotary table 11, the rotary table 11 rotates clockwise. The crankshaft 1 passes sequentially through the brushing workstation 8, the cleaning workstation 9, and the visual inspection workstation 10, completing brushing, cleaning, and inspection before returning to the loading / unloading workstation 7, where a robot or operator removes the crankshaft 1, completing one cleaning cycle.

[0049] For example, the rotary table 11 rotates 90 degrees each time, and the crankshaft 1 stops and works sequentially at four stations. Further, protective plates 13 can be installed between each station to separate adjacent stations, preventing dust and cleaning fluid generated during brushing from spreading to other stations and reducing mutual interference between operations at each station. It should be noted that the lower end of the protective plate 13 is higher than the height of the fixture and the maximum height of the crankshaft 1 during rotation; that is, when the crankshaft 1 changes stations, it passes under the protective plate 13 without interfering with it. Alternatively, the protective plate 13 can be raised and lowered. During operation at each station, the protective plate 13 lowers to isolate the stations, and when changing stations, the protective plate 13 rises to make way, preventing interference with components on the rotary table 11 and the crankshaft 1.

[0050] The working process of the crankshaft sprocket anti-seepage coating cleaning equipment is as follows: The crankshaft 1 is installed on the fixture at loading / unloading station 7. The rotary table 11 rotates 90 degrees clockwise, and the crankshaft 1 enters the brushing station 8. The guide rod cylinder 6 drives the first brush 3 and the second brush 4 to extend from their original positions to the working positions. Both the first brush 3 and the second brush 4 are in contact with the sprocket 2. The brush power element 5 drives the first brush 3 and the second brush 4 to rotate, brushing the sprocket 2. After brushing is completed, the rotary table 11 rotates 90 degrees clockwise, and the crankshaft 1 enters... High-pressure rinsing is performed at cleaning station 9. After rinsing, the rotary table 11 rotates 90 degrees clockwise, and the crankshaft 1 enters the visual inspection station 10 for photographic inspection. If the inspection is qualified, the rotary table 11 rotates 90 degrees clockwise, and the crankshaft 1 returns to the loading and unloading station 7. The crankshaft 1 is then removed, completing one cleaning cycle. If the inspection is unqualified, the system alarm will sound. When the workpiece rotates to the loading and unloading station 7, the unloading and loading operations will not be performed. The workpiece will continue to rotate with the rotary table 11 for another round of brushing and cleaning until it passes the inspection.

[0051] Optionally, the number of workstations can be adjusted according to production needs. For example, the loading / unloading workstation 7 and the visual inspection workstation 10 can be combined, resulting in a total of three workstations. The rotary table 11 rotates 120 degrees each time. The rotary table 11 can also rotate counterclockwise, and the order of each workstation can be adjusted accordingly.

[0052] In some embodiments, the rotary table 11 includes four sets of tooling fixtures, each set including a front center 14, a rear center 15, and a clamping cylinder 16. The front center 14 and the rear center 15 are coaxial, with the front center 14 located at one end near the center of the rotary table 11 and the rear center 15 located at one end away from the center of the rotary table 11. The clamping cylinder 16 can drive the rear center 15 to reciprocate axially, for clamping the crankshaft 1 between the front center 14 and the rear center 15, or for removing the crankshaft 1 from between the front center 14 and the rear center 15.

[0053] For example, the rotary table 11 includes a drive device 17 and a table surface 18. A mounting base 19 is provided at the center of the table surface 18. Four tooling base plates 20 are evenly distributed and fixed on the circumference of the table surface 18. Four front centers 14 are rotatably mounted on the side wall of the mounting base 19 and are evenly distributed on the circumference. The axis of the front centers 14 is set along the radial direction of the rotary table 11. Four clamping cylinders 16 are installed one-to-one on the four tooling base plates 20. The rear center 15 is connected to the piston rod of the clamping cylinder 16. The piston rod of the clamping cylinder 16 extends and retracts along the radial direction of the rotary table 11. When crankshaft 1 needs to be installed on the tooling fixture, the piston rod of the clamping cylinder 16 retracts, the rear center 15 moves away from the front center 14, and crankshaft 1 is placed between the front center 14 and the rear center 15. Then, the piston rod of the clamping cylinder 16 extends, and the rear center 15 moves towards the front center 14, clamping crankshaft 1 between the front center 14 and the rear center 15. The sprocket 2 is located at the end closer to the rear center 15. When crankshaft 1 needs to be removed, the piston rod of the clamping cylinder 16 retracts, the rear center 15 releases crankshaft 1, and crankshaft 1 can be removed from the tooling fixture.

[0054] For example, both the front center 14 and the rear center 15 are tapered centers, and the tapered surfaces of the tapered centers are adapted to the tapered openings of the center holes of the crankshaft 1; the front center 14 and the rear center 15 are made of cemented carbide, which has high hardness and good wear resistance. For example, the air passage of the clamping cylinder 16 is connected to an air source, and the extension and retraction of the clamping cylinder 16 are controlled by a solenoid valve.

[0055] In some embodiments, the tooling fixture further includes a rear center seat 21, a linear guide rail 22, a slider 23, and a locking mechanism 24. The rear center 15 is mounted on the rear center seat 21, the rear center seat 21 is mounted on the slider 23, the slider 23 is slidably engaged with the linear guide rail 22, and the locking mechanism 24 is used to lock and position the rear center seat 21.

[0056] For example, the linear guide 22 is fixedly mounted on the tooling base plate 20. The length direction of the linear guide 22 is arranged along the radial direction of the rotary table 11. The slider 23 is slidably mounted on the linear guide 22. The rear center seat 21 is fixedly mounted on the slider 23, and the rear center 15 is mounted on the rear center seat 21. When the position of the rear center 15 needs to be adjusted, the locking mechanism 24 is released, and the slider 23 is pushed to slide along the linear guide 22. The slider 23 drives the rear center seat 21 and the rear center 15 to move, and the distance between the rear center 15 and the front center 14 changes accordingly to accommodate crankshafts 1 of different lengths. After adjustment, the slider 23 and the rear center seat 21 are locked in the current position by the locking mechanism 24. For example, the locking mechanism 24 is a locking bolt, which passes through the slider 23 and presses against the linear guide 22; alternatively, the locking mechanism 24 can also be an eccentric handle or a pin.

[0057] In some embodiments, the crankshaft sprocket anti-seepage coating cleaning equipment further includes a parts rotation mechanism, which includes a reduction motor 25 and a bevel gear set. The reduction motor 25 drives four front centers 14 to rotate around their own axis through the bevel gear set, thereby driving the crankshaft 1 clamped between the front centers 14 and the rear centers 15 to rotate around its own axis.

[0058] For example, the bevel gear set includes a driving bevel gear 26 and four driven bevel gears 27. The driving bevel gear 26 is connected to the output shaft of the geared motor 25, and the driven bevel gears 27 are coaxially fixedly connected to each front center 14. The driving bevel gear 26 meshes with each driven bevel gear 27. When the geared motor 25 is running, the rotational motion of the output shaft is transmitted to each driven bevel gear 27 through the driving bevel gear 26. Each driven bevel gear 27 drives the corresponding front center 14 to rotate around its own axis. The crankshaft 1, which is pressed against the front center 14, rotates synchronously with the front center 14, and the sprocket 2 rotates around its own axis with the crankshaft 1.

[0059] For example, the mounting base 19 has a hollow structure. Four front center seats 28 are rotatably mounted on the side wall of the mounting base 19 via bearings. The front center 14 is fixed on the front center seats 28. The inner end of the front center seats 28 penetrates the side wall of the mounting base 19 and extends into the cavity of the mounting base 19. Four driven bevel gears 27 are coaxially fixedly mounted on the four front center seats 28 in a one-to-one correspondence. The geared motor 25 is mounted on the upper end of the mounting base 19. The output shaft of the geared motor 25 extends downward into the cavity of the mounting base 19. The driving bevel gear 26 is coaxially fixedly mounted on the output shaft of the geared motor 25. The driving bevel gear 26 meshes with the four driven bevel gears 27 at the same time.

[0060] Furthermore, to prevent slippage when the front center 14 drives the crankshaft 1 to rotate, a lever 29 extending parallel to the crankshaft 1 is fixed on the front center seat 28. When the front center seat 28 rotates, the lever 29 drives the crankshaft 1 to rotate by actuating the counterweight of the crankshaft 1. As a redundant design, the lever 29 can still drive the crankshaft 1 to rotate synchronously with the front center 14 when slippage occurs between the front center 14 and the crankshaft 1.

[0061] refer to Figure 3 , Figure 6 and Figure 7 In some embodiments, the crankshaft sprocket anti-seepage coating cleaning equipment further includes a protective cover 30 disposed at the cleaning station 9. The protective cover 30 includes a vertically arranged partition 31 and a drive cylinder 32. The lower end of the partition 31 is provided with a groove 33. Exemplarily, the partition 31 is vertically disposed at the cleaning station 9, perpendicular to the crankshaft 1. The lower end of the partition 31 is provided with a groove 33, the shape of which is adapted to the outer contour of the crankshaft 1. Exemplarily, the groove 33 is an arc-shaped groove 33. Further, the edge of the groove 33 is provided with a sealing strip, which is in contact with the surface of the crankshaft 1, further improving the isolation effect between the partition 31 and the crankshaft 1. During cleaning, the drive cylinder 32 drives the partition 31 to descend. The slot 33 at the lower end of the partition 31 engages with the crankshaft 1. The partition 31 separates the cleaning position from the non-cleaning position. The cleaning fluid sprayed by the spray assembly 34 is blocked by the partition 31, making it less likely to splash onto areas outside the cleaning position, such as the main journals and connecting rod journals of the crankshaft 1 that have undergone nitriding treatment. This reduces the risk of corrosion of these areas by the cleaning fluid and helps maintain the surface quality of the crankshaft 1 journals. After cleaning, the drive cylinder 32 drives the partition 31 to rise, and the slot 33 retracts from the crankshaft 1. The crankshaft 1 can then rotate with the rotary table 11 to the next work station.

[0062] In some embodiments, the crankshaft sprocket anti-seepage coating cleaning equipment further includes a cleaning fluid circulation system, which includes a water tank, a high-pressure cleaning pump, and a filter device. The water tank is used to store the cleaning fluid. The inlet of the high-pressure cleaning pump is connected to the water tank through a pipeline, and the outlet of the high-pressure cleaning pump is connected to the spray assembly 34 through a pipeline. The spray direction of the spray assembly 34 is towards the sprocket 2. The high-pressure cleaning pump pressurizes the cleaning fluid in the water tank and sprays it out through the spray assembly 34 to perform high-pressure spray rinsing on the sprocket 2. The cleaning fluid after spraying flows back to the water tank through a recovery pipeline.

[0063] The filtration device removes impurities such as paint particles carried in the cleaning fluid. For example, the filtration device includes a primary filter and a secondary filter. The primary filter is installed on the recovery pipeline to remove paint particles from the returned cleaning fluid after spraying. The secondary filter is installed on the pipeline between the high-pressure cleaning pump and the water tank to filter the cleaning fluid entering the high-pressure cleaning pump again. Optionally, a heating device is installed in the water tank to heat the cleaning fluid. The heated cleaning fluid has a better softening effect on the sintered and cured anti-seepage coating, which is beneficial to improving the spray cleaning effect.

[0064] In some embodiments, the brushing station 8 is equipped with a dust removal system for collecting paint dust generated during brushing. Exemplarily, the dust removal system includes a dust hood, a dust collection pipe, a fan, and a dust collection device. The dust hood is positioned above the brushing station 8, with its suction port facing the contact point between the brush and the sprocket 2. One end of the dust collection pipe is connected to the dust hood, and the other end is connected to the dust collection device. The fan is located on the dust collection pipe and is used to generate the negative pressure required for dust collection. When the composite brush mechanism brushes the sprocket 2, the brushed paint forms dust. Under negative pressure, the dust enters the dust collection device through the dust hood and dust collection pipe, where it is collected and centrally processed, reducing the diffusion of paint dust within the equipment.

[0065] In some embodiments, the visual inspection station 10 is equipped with a CCD visual inspection unit, which photographs the cleaned sprocket 2 and identifies any residual anti-seepage coating. Exemplarily, the CCD visual inspection unit includes a CCD camera 35 and an image processing module. The inspection station is equipped with a camera mounting plate 36, on which the CCD camera 35 is fixed. The lens of the CCD camera 35 is positioned facing the sprocket 2, and the image processing module is communicatively connected to the CCD camera 35. The CCD camera 35 photographs the cleaned sprocket 2, acquiring images of the sprocket tooth surface. The image processing module analyzes the acquired images to identify whether any anti-seepage coating residue exists on the surface of the sprocket 2, as well as in the tooth roots and tooth grooves. For example, sprocket 2 rotates around its own axis under the drive of the part rotation mechanism. CCD camera 35 takes multiple pictures during the rotation of sprocket 2, acquiring images of sprocket 2 from different angles, covering the entire circumference of sprocket 2 to avoid omissions. The image processing module compares the image of the sprocket 2 tooth surface with a preset standard image to determine whether there is any residual anti-seepage coating. If residue is detected, the system alarms. When the workpiece rotates to the loading / unloading station 7, the unloading and loading operations are not performed. The workpiece continues to rotate with the rotary table 11 for another round of brushing and cleaning until it passes inspection. It should be noted that in this specification, relational terms such as "first" and "second" are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0066] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the present invention and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A crankshaft sprocket anti-seepage coating cleaning device, characterized in that, It includes a composite brush mechanism, which includes two sets of brushes, namely a first brush (3) and a second brush (4). The axis of the first brush (3) is parallel to the axis of the sprocket (2). When brushing, the first brush (3) is tangent to the circumference of the sprocket (2) and brushes the sprocket (2) in a circumferential direction. The axis of the second brush (4) is perpendicular to and out of plane with the axis of the sprocket (2). When brushing, the second brush (4) is tangent to the axis of the sprocket (2) and brushes the sprocket (2) axially.

2. The crankshaft sprocket anti-seepage coating cleaning equipment according to claim 1, characterized in that, The composite brush mechanism also includes a brush power element (5) and a guide rod cylinder (6). The brush power element (5) is used to drive the brush to rotate, and the guide rod cylinder (6) is used to drive the brush power element (5) and the brush to reciprocate between the working position and the original position. When the brush is in the working position, the brush contacts the sprocket (2) for brushing. When the brush is in the original position, the brush is disengaged from the sprocket (2).

3. The crankshaft sprocket anti-seepage coating cleaning equipment according to claim 2, characterized in that, It also includes a loading and unloading station (7), a brushing station (8), a cleaning station (9), a visual inspection station (10), and a rotary table (11). The four stations are arranged in a clockwise direction, and the rotary table (11) passes through the four stations in sequence during its clockwise rotation.

4. The crankshaft sprocket anti-seepage coating cleaning equipment according to claim 3, characterized in that, The rotary table (11) includes four sets of tooling fixtures. Each set of tooling fixtures includes a front center (14), a rear center (15), and a clamping cylinder (16). The front center (14) and the rear center (15) are coaxial. The front center (14) is located at one end close to the center of the rotary table (11), and the rear center (15) is located at one end away from the center of the rotary table (11). The clamping cylinder (16) can drive the rear center (15) to reciprocate axially, for clamping the crankshaft (1) between the front center (14) and the rear center (15), or removing the crankshaft (1) from between the front center (14) and the rear center (15).

5. The crankshaft sprocket anti-seepage coating cleaning equipment according to claim 4, characterized in that, The tooling fixture also includes a rear center seat (21), a linear guide rail (22), a slider (23), and a locking mechanism (24); the rear center (15) is mounted on the rear center seat (21), the rear center seat (21) is mounted on the slider (23), the slider (23) slides with the linear guide rail (22), and the locking mechanism (24) is used to lock and position the rear center seat (21).

6. The crankshaft sprocket anti-seepage coating cleaning equipment according to claim 4, characterized in that, It also includes a part rotation mechanism, which includes a geared motor (25) and a bevel gear set; the geared motor (25) drives the four front centers (14) to rotate around their own axis through the bevel gear set, thereby driving the crankshaft (1) clamped between the front centers (14) and the rear centers (15) to rotate around its own axis.

7. The crankshaft sprocket anti-seepage coating cleaning equipment according to claim 4, characterized in that, It also includes a protective cover (30) set at the cleaning station (9). The protective cover (30) includes a vertically arranged partition (31) and a drive cylinder (32). The lower end of the partition (31) is provided with a slot (33). During cleaning, the drive cylinder (32) drives the partition (31) to descend, so that the slot (33) is locked on the crankshaft (1) to separate the cleaning position from the non-cleaning position. After cleaning, the drive cylinder (32) drives the partition (31) to rise, so that the slot (33) exits the crankshaft (1).

8. The crankshaft sprocket anti-seepage coating cleaning equipment according to claim 1, characterized in that, It also includes a cleaning fluid circulation system, which includes a water tank, a high-pressure cleaning pump and a filter device. The high-pressure cleaning pump pressurizes the cleaning fluid in the water tank and sprays it onto the sprocket (2). The sprayed cleaning fluid flows back to the water tank. The filter device is used to filter the cleaning fluid.

9. The crankshaft sprocket anti-seepage coating cleaning equipment according to claim 3, characterized in that, The brushing station (8) is equipped with a dust removal system, which is used to collect paint dust generated during brushing.

10. The crankshaft sprocket anti-seepage coating cleaning equipment according to claim 3, characterized in that, The visual inspection station (10) is equipped with a CCD visual inspection unit, which takes pictures of the cleaned sprocket (2) and identifies the residue of the anti-seepage coating.

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