A camshaft bore cleaning device and method

Abstract

The application discloses a camshaft inner hole cleaning device and a cleaning method, and belongs to the technical field of camshaft machining of new energy vehicles. The camshaft inner hole cleaning device comprises a rack; a water tank is arranged on the base of the rack, a lower clamping structure for fixing the bottom of the camshaft is arranged in the water tank, a supporting plate is arranged on the base, the upper portion of the supporting plate is provided with a sliding plate, a sliding structure for driving the vertical sliding of the sliding plate is arranged on the supporting plate, an inner cleaning mechanism for cleaning the inner hole of the camshaft is arranged on the sliding plate, and an outer brush cleaning mechanism for cleaning the outer portion of the camshaft is arranged on the outer portion of the sliding plate; and an upper clamping mechanism for clamping the top of the camshaft is arranged on the supporting plate. The camshaft inner hole cleaning device and the cleaning method can solve the problem of poor cleaning effect of the existing cleaning device on the camshaft inner hole.

Description

Technical Field

[0001] This invention relates to the field of camshaft processing technology for new energy vehicles, and in particular to a camshaft inner hole cleaning device and cleaning method. Background Technology

[0002] In the field of new energy vehicle manufacturing, the camshaft is one of the key components of the engine, and its machining accuracy and cleanliness have a crucial impact on the engine's performance and reliability. Camshafts are generally manufactured using casting. The camshaft has an inner bore at its center. After casting, sand adheres to the inner shaft, and during the machining process, oil stains, iron filings, and other impurities remain inside the inner bore. During use, these impurities slide out of the camshaft's inner bore, affecting the camshaft's transmission accuracy and causing severe wear. Therefore, it is necessary to clean the inner bore of the camshaft.

[0003] The inner bore of the camshaft is long and narrow, making cleaning it quite troublesome. It requires manual cleaning using a long, thin wire brush, but manual cleaning is inefficient.

[0004] Existing patent CN202221613860.9 discloses a camshaft inner bore brush cleaning machine, including a frame; a camshaft clamping mechanism installed inside the frame to vertically clamp the camshaft; a brush set inside the frame and mounted on a lifting mechanism, the brush moving towards or away from the camshaft inner bore as driven by the lifting mechanism; the bottom of the brush rotating via a brush rotation unit to form a cleaning effect inside the camshaft inner bore; the bottom of the brush is also connected to a brush spraying unit, through which water flows and sprays out from the end of the brush. This patent uses a frame, camshaft clamping mechanism, brush, brush rotation unit, and brush spraying unit to achieve clamping while ensuring the brush rotates and brushes inside the camshaft, preventing brush bending and inaccurate positioning, thus achieving a thorough cleaning of the camshaft inner cavity. However, while this patent achieves mechanized cleaning of the camshaft inner bore, the brush is long and thin, exhibiting significant torque, leading to instability during brushing and affecting the stability of brush rotation, thereby impacting the cleaning effect. Summary of the Invention

[0005] The purpose of this invention is to provide a camshaft inner bore cleaning device and cleaning method to solve the problem of poor cleaning effect of existing cleaning devices on camshaft inner bores.

[0006] To achieve the above objectives, the present invention provides a camshaft inner bore cleaning device, including a frame; a water tank is provided on the base of the frame, and a lower clamping structure for fixing the bottom of the camshaft is provided in the water tank; a support plate is provided on the base, and a sliding plate is provided on the upper part of the support plate; a sliding structure for driving the sliding plate to slide vertically is provided on the support plate; an inner cleaning mechanism for cleaning the inner bore of the camshaft is provided on the sliding plate; an outer brushing mechanism for cleaning the outer surface of the camshaft is provided on the outside of the sliding plate; and an upper clamping mechanism for clamping the top of the camshaft is provided on the support plate.

[0007] Preferably, the sliding structure includes a slide block, a guide rail on a support plate that guides the vertical sliding of the slide block, a vertical lead screw on the support plate, the top end of the lead screw being rotatably connected to the support plate, the bottom end of the lead screw being rotatably connected to a fixed plate, the fixed plate being fixedly disposed in the middle of the support plate, and a threaded hole on the slide block for the lead screw to pass through and be adapted to the lead screw; a sliding plate is located between two slide blocks, the sliding plate is slidably connected to the slide blocks, and a transmission component on the slide block is provided to drive the sliding plate to slide up and down reciprocally.

[0008] Preferably, the transmission assembly includes a first rotating shaft, which is rotatably connected to a first support seat on the slide. A transmission gear is provided on the first rotating shaft, and a vertical rack meshing with the transmission gear is provided on the support plate. A first bevel gear is provided on the first rotating shaft, and a second bevel gear meshing with the first bevel gear is provided on a second rotating shaft. The second rotating shaft is rotatably connected to a second support seat on the slide. A rotating plate is fixedly provided at the end of the second rotating shaft, and the rotating plate is hinged to the slide plate through a first transmission plate.

[0009] Preferably, the internal cleaning mechanism includes a plurality of internal cleaning units arranged in a linear array on the slide plate. The slide plate is provided with a power structure that drives the internal cleaning units to rotate synchronously. The power structure includes a second motor mounted on the slide plate. The mounting shaft of the internal cleaning unit is rotatably connected to the slide plate through bearings. The synchronous pulley on the mounting shaft is connected to the synchronous pulley on the output shaft of the second motor through a synchronous belt. A guide wheel is provided between the mounting shafts. The synchronous belt is wound around the guide wheel. The guide wheel is rotatably connected to the slide plate.

[0010] Preferably, the mounting shaft has a hollow structure, and the bottom of the mounting shaft is provided with spray holes arranged in a circumferential array. The spray holes are connected to the internal cavity of the mounting shaft, and the top of the mounting shaft is connected to external high-pressure water through a rotary joint. A cleaning head is located at the bottom of the mounting shaft. Inside the cleaning head is a mounting cavity, with a transmission seat at its center. A support structure that contacts the transmission seat is located at the upper part of the mounting cavity, and a cleaning structure that contacts the transmission seat is located at the lower part of the mounting cavity. The support structure drives the cleaning structure to slide via the transmission seat. A insertion hole for a fixing post is located at the center of the transmission seat. The fixing post is fixed to the bottom of the cleaning head and is coaxial with the mounting shaft. A first spring that applies an upward pushing force to the transmission seat is located between the bottom end of the transmission seat and the mounting cavity.

[0011] Preferably, the support structure includes a plurality of support rods arranged in a circumferential array and slidably disposed on the upper part of the cleaning head. A roller is rotatably disposed at one end of the support rod extending out of the cleaning head. A positioning plate is disposed on the support rod. A second spring is disposed between the positioning plate and the inner wall of the mounting cavity so that one end of the support rod contacts the first inclined surface of the upper part of the transmission seat. The cleaning structure includes several cleaning plates arranged in a circular array at the lower part of the cleaning head. The middle part of the cleaning plate is connected to the transmission block through a connecting plate. The side wall of the cleaning head is provided with a through hole that allows the connecting plate to pass through and guides the horizontal sliding of the connecting plate. The transmission block is provided with a transmission inclined surface that matches the second inclined surface at the lower part of the transmission seat. A third spring is provided between the transmission block and the mounting cavity to make the transmission inclined surface of the transmission block contact the second inclined surface at the lower part of the transmission seat. The first inclined plane and the second inclined plane have opposite directions of inclination.

[0012] Preferably, the external cleaning mechanism includes an external cleaning unit corresponding to the internal cleaning unit. The external cleaning unit includes cleaning heads symmetrically arranged on both sides of the cleaning head. The cleaning heads are fixedly connected to the slide plate by a fixing rod. The fixing plate is provided with through holes through which the mounting shaft and the fixing rod pass. The inside of the cleaning head is provided with a partition plate that divides the internal cavity of the cleaning head into several limiting cavities. An mounting plate is slidably arranged in the limiting cavity. The mounting plate is connected to the bottom of the limiting cavity by a fourth spring. Several cleaning plates are arranged outside the mounting plate. The arrangement direction of the cleaning plates on the mounting plate is perpendicular to the arrangement direction of the mounting plate on the cleaning head. The cleaning plates are connected to the mounting plate by a fifth spring. Guide posts are provided at both ends of the cleaning plates to guide the sliding of the cleaning plates. Fixed sleeves corresponding to the guide posts are provided on the mounting plate. The guide posts are located in the fixed sleeves and are slidably connected to the fixed sleeves.

[0013] Preferably, the upper clamping mechanism includes a pressure plate located below the fixed plate. The pressure plate has a through hole for the brush head to pass through. An upper clamping seat, corresponding to the mounting shaft, is rotatably mounted on the pressure plate. The upper clamping seat is coaxial with the mounting shaft. A cylinder is mounted on the fixed plate to drive the pressure plate to rise and fall. An inner hole for the cleaning head to pass through is located at the center of the upper clamping seat. The inner hole is coaxial with the upper clamping seat. An upper positioning surface for positioning the top of the camshaft is located at the bottom of the inner hole. A first groove for mounting a first sliding sleeve is located on the upper positioning surface. The first sliding sleeve is connected to the top surface of the first groove by a sixth spring, which applies a downward thrust to the first sliding sleeve. The side wall of the upper clamping seat is provided with… The device has several first mounting slots arranged in a circular array. A second transmission plate is installed in each first mounting slot. The middle part of the second transmission plate is rotatably connected to the first mounting slot. A first sliding hole is provided at the top of the second transmission plate. A first fixing pin is provided on the first connecting rod hinged to the top of the first sliding sleeve. The first fixing pin is located in the first sliding hole and is slidably connected to the first sliding hole. A second sliding hole is provided at the bottom of the second transmission plate. A second fixing pin is provided on the slide rod and is located in the second sliding hole and is slidably connected to the second sliding hole. The slide rod is located on the bottom surface of the upper clamping seat. A clamping plate for clamping the camshaft is provided on the slide rod. A slide rail that guides the horizontal sliding of the clamping plate is provided on the bottom surface of the upper clamping seat.

[0014] Preferably, the lower clamping structure includes a lower clamping seat corresponding to the upper clamping seat, the lower clamping seat and the upper clamping seat are coaxially arranged, the lower clamping seat is rotatably connected to the water tank in a sealed manner, and a motor is provided inside the base to drive the lower clamping seat to rotate through a transmission wheel provided at the bottom of the lower clamping seat; the center of the lower clamping seat is provided with a clearance hole for the cleaning head to pass through, the top of the clearance hole is provided with a lower positioning surface for positioning the bottom end of the camshaft, the lower positioning surface is provided with a second groove for installing the second sliding sleeve, the second sliding sleeve and the bottom surface of the second groove are connected by a seventh spring, the seventh spring applies an upward thrust to the first sliding sleeve, the side wall of the lower clamping seat is provided with a plurality of second mounting grooves arranged in a circumferential array, a third transmission plate is provided in the second mounting groove, the middle part of the third transmission plate is rotatably connected to the second mounting groove, the bottom end of the third transmission plate is provided with a third sliding hole, a third fixing pin is provided on the second connecting rod hinged to the second sliding sleeve, the third fixing pin is located in the third sliding hole and is slidably connected to the third sliding hole; the bottom of the clearance hole is provided with a drain hole, and the clearance hole is connected to the water tank through the drain hole.

[0015] The cleaning method of the above-mentioned camshaft inner bore cleaning device includes the following steps: S1. Insert the bottom end of the camshaft into the lower cassette and the top end of the camshaft into the upper cassette. The cylinder drives the pressure plate to descend. The bottom end of the camshaft applies a downward thrust to the second sliding sleeve, compressing the seventh spring. The second sliding sleeve drives the third transmission plate to rotate through the second connecting rod and the third sliding hole. The third transmission plate presses the bottom end of the camshaft tightly into the lower cassette. The top end of the camshaft applies an upward thrust to the first sliding sleeve, compressing the sixth spring. The first sliding sleeve drives the second transmission plate to rotate through the first connecting rod and the first sliding hole. The bottom end of the second transmission plate drives the slide rod to slide through the second sliding hole. The slide rod drives the clamping plate to slide towards the inner hole, clamping the top end of the camshaft into the upper cassette. S2. Start the first motor. The first motor drives the slide to move downward through the lead screw. The slide drives the first rotating shaft to move synchronously. The rack drives the transmission gear to rotate. The transmission gear drives the first bevel gear to rotate through the first rotating shaft. The first bevel gear drives the second rotating shaft to rotate through the second bevel gear. The second rotating shaft drives the rotating plate to rotate synchronously. The rotating plate drives the slide plate to move up and down reciprocally through the first transmission plate. The slide plate drives the mounting shaft and the fixing rod to move synchronously. The mounting shaft drives the cleaning head to move above the inner hole of the camshaft. The fixing rod drives the brush head to move to both sides of the outer surface of the camshaft. S3. Start the second motor. The second motor drives the mounting shaft to rotate via the synchronous belt and synchronous pulley. The mounting shaft drives the cleaning head to rotate synchronously. The cleaning plate is inserted into the inner hole. The roller is squeezed by the inner hole of the camshaft. The roller drives the support rod to slide into the cleaning head. The second spring is stretched. The support rod drives the transmission seat to slide downward via the first inclined surface. The first spring is compressed. The transmission seat drives the transmission block to slide outward via the second inclined surface and the transmission inclined surface. The transmission block drives the cleaning plate to slide outward via the connecting plate. The cleaning plate is in close contact with the inner hole wall to clean the inner hole. The roller supports the cleaning head. High-pressure water enters the inner cavity of the mounting shaft through the rotary joint. The high-pressure water in the mounting shaft is sprayed out through the bottom spray hole and sprayed onto the inner wall of the inner hole of the camshaft. The water in the inner hole of the camshaft is discharged into the water tank through the drain hole at the bottom of the lower bracket. S4. The motor inside the base drives the lower bracket to rotate through the transmission wheel. The lower bracket drives the camshaft and the upper bracket to rotate synchronously. The rotation direction of the camshaft is opposite to the rotation direction of the cleaning head. The brush plate on the brush head is in close contact with the outer surface of the camshaft under the action of the fourth and fifth springs. The nozzle sprays water onto the outer surface of the camshaft to clean it. S5. After the cleaning head moves to the bottom of the inner hole of the camshaft, the first motor reverses and the cleaning head and brush head further clean the camshaft. After cleaning, the first motor, the second motor, and the third motor stop rotating, the cylinder retracts, and the camshaft is removed from the lower bracket.

[0016] The advantages and positive effects of the camshaft inner bore cleaning device and cleaning method described in this invention are: 1. The present invention has a sliding structure on the support plate that drives the slide block to slide up and down and drives the slide plate to slide back and forth. The slide plate drives the internal cleaning mechanism and the external brushing structure to clean the inside and outside of the camshaft simultaneously, thereby improving the cleaning effect of the camshaft.

[0017] 2. A support structure is provided on the cleaning head to support it, thereby improving the cleaning effect. The support structure drives the cleaning plate to move outward through the transmission seat, so that the cleaning plate is in close contact with the inner wall of the hole, improving the cleaning effect on the inner hole.

[0018] 3. The external brushing mechanism of the present invention is provided with a brushing plate and a mounting plate on the brushing head. The arrangement direction of the brushing plate on the mounting plate is perpendicular to the arrangement direction of the mounting plate on the brushing head, thereby dividing the brushing head into several blocks to meet the cleaning needs of the irregular outer surface of the camshaft and improve the cleaning effect of the outer surface of the camshaft.

[0019] 4. A lower retaining seat is installed inside the water tank, and an upper retaining seat is installed on the pressure plate. The camshaft is fixed between the upper and lower retaining seats. The motor drives the camshaft and the upper retaining seat to rotate synchronously through the lower retaining seat, which helps to improve the cleaning effect on the outer surface and inner hole of the camshaft.

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the sliding structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the cleaning head according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the cleaning head according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the brush head according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a partial longitudinal section of the brush head according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the brush head according to an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the upper card holder according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the upper card holder according to an embodiment of the present invention; Figure 10 This is a three-dimensional structural diagram of the lower card holder according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the cross-sectional structure of the lower card holder according to an embodiment of the present invention.

[0022] Figure Labels 1. Frame; 11. Base; 12. Water tank; 13. Support plate; 14. Slide; 15. Lead screw; 16. First motor; 17. Fixing plate; 18. Slide plate; 19. First rotating shaft; 110. First support base; 111. Transmission gear; 112. Rack; 113. First bevel gear; 114. Second bevel gear; 115. Second rotating shaft; 116. Second support base; 117. Rotating plate; 118. First transmission plate; 2. Internal cleaning mechanism; 21. Mounting shaft; 22. Second motor; 23. Synchronous belt; 24. Guide wheel; 25. Cleaning head; 26. Support rod; 27. Roller; 28. Cleaning plate; 29. ​​Mounting cavity; 210. Transmission seat; 211. Fixing column; 212. Insertion hole; 213. First spring; 214. Positioning plate; 215. Second spring; 216. Transmission block; 217. Connecting plate; 218. Third spring; 3. External brushing mechanism; 31. Fixing rod; 32. Brush head; 33. Limiting cavity; 34. Partition plate; 35. Mounting plate; 36. Fourth spring; 37. Brush plate; 38. Fixing sleeve; 39. Guide post; 310. Fifth spring; 4. Upper clamping mechanism; 41. Upper bracket; 42. Pressure plate; 43. Cylinder; 44. Inner hole; 45. First sliding sleeve; 46. Sixth spring; 47. First mounting groove; 48. Second transmission plate; 49. First sliding hole; 410. First connecting rod; 411. Second sliding hole; 412. Sliding rod; 413. Clamping plate; 5. Lower clamping structure; 51. Lower card seat; 52. Transmission wheel; 53. Clearance hole; 54. Second sliding sleeve; 55. Seventh spring; 56. Second mounting groove; 57. Third transmission plate; 58. Third sliding hole; 59. Second connecting rod; 510. Drain hole. Detailed Implementation

[0023] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] In this application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of any inconsistency, the meaning as set forth in this specification or derived from the content described herein shall prevail. Furthermore, the terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application. To accurately describe the technical content of this application and to accurately understand the invention, the following explanations or definitions of the terms used in this specification are provided before describing specific embodiments: The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] like Figure 1 As shown. A camshaft inner bore cleaning device includes a frame 1. A water tank 12 is provided on the base 11 of the frame 1. The water tank 12 is used to collect water flowing out during the cleaning process. A filter can be installed on the water tank 12 to realize water recycling. The camshaft can be cleaned with clean water or cleaning fluid. A lower clamping structure 5 is provided in the water tank 12 to fix the bottom of the camshaft. A motor is provided inside the base 11 to drive the clamping structure to rotate, thereby realizing the rotation of the camshaft. A support plate 13 is fixedly provided on the base 11. A slide plate 18 is provided on the upper part of the support plate 13. A sliding structure is provided on the support plate 13 to drive the slide plate 18 to slide vertically. An inner cleaning mechanism 2 is provided on the slide plate 18 to clean the inner bore 44 of the camshaft. An outer brushing mechanism 3 is provided on the outside of the slide plate 18 to clean the outside of the camshaft. The slide plate 18 drives the inner cleaning mechanism 2 and the outer brushing mechanism 3 to rise and fall synchronously, thereby realizing the synchronous cleaning of the inner bore 44 and the outside of the camshaft. The support plate 13 is provided with an upper clamping mechanism 4 for clamping the top of the camshaft.

[0026] like Figure 2 As shown. The sliding structure includes a slide block 14, and a guide rail on a support plate 13 that guides the vertical sliding of the slide block 14. A vertical lead screw 15 is provided on the support plate 13, with its top end rotatably connected to the support plate 13 via a bearing, and its bottom end rotatably connected to a fixed plate 17 via a bearing. The fixed plate 17 is fixedly disposed in the middle of the support plate 13. The slide block 14 is provided with a threaded hole through which the lead screw 15 passes and is adapted to the lead screw 15.

[0027] The slide plate 18 is located between two slide seats 14, and the slide plate 18 is slidably connected to the slide seats 14. A transmission assembly is provided on the slide seats 14 to drive the slide plate 18 to slide up and down reciprocally. The transmission assembly includes a first rotating shaft 19, which is rotatably connected to a first support seat 110 fixedly mounted on the slide seat 14 via bearings. A transmission gear 111 is fixedly mounted on the first rotating shaft 19, and a vertical rack 112 meshing with the transmission gear 111 is fixedly mounted on the support plate 13. A first bevel gear 113 is fixedly mounted on the first rotating shaft 19, and a second bevel gear 114 meshing with the first bevel gear 113 is fixedly mounted on a second rotating shaft 115. The second rotating shaft 115 is rotatably connected to a second support seat 116 fixedly mounted on the slide seat 14 via bearings. A rotating plate 117 is fixedly mounted on the end of the second rotating shaft 115, and the rotating plate 117 is hinged to the slide plate 18 via the first transmission plate 118.

[0028] The first motor 16 drives the slide block 14 to slide via the lead screw 15. The slide block 14 drives the first rotating shaft 19 to rotate via the transmission gear 111 and the rack 112. The first rotating shaft 19 drives the second rotating shaft 115 to rotate via the first bevel gear 113 and the second bevel gear 114. The second rotating shaft 115 drives the slide plate 18 to slide up and down reciprocally via the rotating plate 117 and the first transmission plate 118.

[0029] The internal cleaning mechanism 2 includes several internal cleaning units arranged in a linear array on the slide plate 18. A power structure is provided on the slide plate 18 to drive the internal cleaning units to rotate synchronously. The power structure includes a second motor 22 mounted on the slide plate 18. The mounting shaft 21 of the internal cleaning unit is rotatably connected to the slide plate 18 via bearings, causing the slide plate 18 to drive the mounting shaft 21 to slide up and down synchronously while maintaining the rotation of the mounting shaft 21. A synchronous pulley fixedly mounted on the mounting shaft 21 is connected to a synchronous pulley fixedly mounted on the output shaft of the second motor 22 via a synchronous belt 23. Guide wheels 24 are provided between the mounting shafts 21, and the synchronous belt 23 is wound around the guide wheels 24. The guide wheels 24 are rotatably connected to the slide plate 18 via bearings.

[0030] The mounting shaft 21 has a hollow structure, with spray holes arranged in a circular array at its bottom, which are connected to the internal cavity of the mounting shaft 21. The top of the mounting shaft 21 is connected to external high-pressure water via a rotary joint. High-pressure water enters the mounting shaft 21 through the rotary joint and then exits through the spray holes to clean the inner hole 44.

[0031] like Figure 3 , Figure 4 As shown. A cleaning head 25 is fixedly mounted on the bottom of the mounting shaft 21. The cleaning head 25 has an internal mounting cavity 29, and a transmission seat 210 is located at the center of the mounting cavity 29. A support structure is located at the upper part of the mounting cavity 29, contacting the transmission seat 210, and a cleaning structure is located at the lower part of the mounting cavity 29, also contacting the transmission seat 210. The support structure drives the cleaning structure to slide via the transmission seat 210. The center of the transmission seat 210 has an insertion hole 212 through which a fixing post 211 passes. The fixing post 211 is fixed to the bottom of the cleaning head 25 and is coaxially mounted with the mounting shaft 21. The transmission seat 210 and the fixing post 211 are slidably connected. A first spring 213 is located between the bottom end of the transmission seat 210 and the mounting cavity 29, applying an upward pushing force to the transmission seat 210.

[0032] The support structure includes several support rods 26 arranged in a circular array and slidably disposed on the upper part of the cleaning head 25. Rollers 27 are rotatably disposed at the ends of the support rods 26 extending out of the cleaning head 25. A positioning plate 214 is fixedly disposed on the support rods 26. A second spring 215 is disposed between the positioning plate 214 and the inner wall of the mounting cavity 29, so that one end of the support rod 26 contacts the first inclined surface on the upper part of the transmission seat 210.

[0033] The cleaning structure includes several cleaning plates 28 arranged in a circumferential array at the lower part of the cleaning head 25. The middle part of the cleaning plates 28 is fixedly connected to the transmission block 216 via a connecting plate 217. The side wall of the cleaning head 25 is provided with a through hole for the connecting plate 217 to pass through and guide the horizontal sliding of the connecting plate 217. The transmission block 216 is provided with a transmission inclined surface adapted to the second inclined surface of the lower part of the transmission seat 210. A third spring 218 is provided between the transmission block 216 and the mounting cavity 29 to make the transmission inclined surface of the transmission block 216 contact the second inclined surface of the lower part of the transmission seat 210.

[0034] The first and second inclined planes have opposite inclination directions. In the natural state of the second spring 215, the radius of the circle containing the roller 27 is larger than the radius of the inner hole 44. When the roller 27 is inserted into the inner hole 44, the roller 27 drives the transmission seat 210 to move downward through the support rod 26. The transmission seat 210 drives the cleaning plate 28 to move outward through the second inclined plane and the transmission block 216. The cleaning plate 28 abuts against the inner wall of the inner hole 44, which helps to improve the cleaning effect of the inner hole 44 and facilitates the insertion of the cleaning head 25 into the inner hole 44. The support of the cleaning head 25 by the roller 27 improves the stability of the cleaning head 25 during operation.

[0035] like Figure 5 , Figure 6 , Figure 7 As shown. The external cleaning mechanism 3 includes external cleaning units corresponding to the internal cleaning units. Each external cleaning unit includes cleaning heads 32 symmetrically arranged on both sides of the cleaning head 25. The cleaning heads 32 are fixedly connected to the slide plate 18 via fixing rods 31. The fixing plate 17 is provided with through holes through which the mounting shaft 21 and the fixing rods 31 pass, and the fixing plate 17 supports the mounting shaft 21 and the fixing rods 31. Inside the cleaning head 32, a partition plate 34 is fixedly provided, dividing the internal cavity of the cleaning head 32 into several limiting cavities 33. A mounting plate 35 is slidably arranged in the limiting cavity 33, and the mounting plate 35 is connected to the bottom of the limiting cavity 33 via a fourth spring 36. Outside the mounting plate 35, several cleaning plates 37 are provided, and the arrangement direction of the cleaning plates 37 on the mounting plate 35 is perpendicular to the arrangement direction of the mounting plates 35 on the cleaning head 32. The cleaning plates 37 are connected to the mounting plate 35 via a fifth spring 310. The two ends of the brush plate 37 are fixedly provided with guide posts 39 that guide the sliding of the brush plate 37. The mounting plate 35 is fixedly provided with fixing sleeves 38 that correspond one-to-one with the guide posts 39. The guide posts 39 are located inside the fixing sleeves 38 and are slidably connected to the fixing sleeves 38. The brush plate 37 divides the brush head 32 into several blocks to meet the cleaning needs of the irregular outer surface of the camshaft and improve the cleaning effect of the outer surface of the camshaft.

[0036] The upper clamping mechanism 4 includes a pressure plate 42, which is located below the fixed plate 17. The pressure plate 42 has a through hole through which the brush head 32 passes. An upper retainer 41, corresponding to the mounting shaft 21, is rotatably mounted on the pressure plate 42 via bearings. The upper retainer 41 is coaxially mounted with the mounting shaft 21. The fixed plate 17 is equipped with a cylinder 43 that drives the pressure plate 42 to rise and fall, facilitating the fixing of the top of the camshaft via the upper retainer 41.

[0037] like Figure 8 , Figure 9As shown. The upper mounting base 41 has an inner hole 44 at its center for the cleaning head 25 to pass through, and the inner hole 44 is coaxially arranged with the upper mounting base 41. The bottom end of the inner hole 44 has an upper positioning surface for positioning the top end of the camshaft, and the upper positioning surface has a first groove for mounting the first sliding sleeve 45. The first sliding sleeve 45 is connected to the top surface of the first groove by a sixth spring 46, which applies a downward thrust to the first sliding sleeve 45. The first sliding sleeve 45 slides up and down within the first groove. The side wall of the upper mounting base 41 has several first mounting slots 47 arranged in a circumferential array. An L-shaped second transmission plate 48 is disposed within each first mounting slot 47, and the middle part of the second transmission plate 48 is rotatably connected to the first mounting slot 47. The top end of the second transmission plate 48 has a first sliding hole 49. A first fixing pin is fixedly disposed on the first connecting rod 410 hinged to the top end of the first sliding sleeve 45, and the first fixing pin is located within and slidably connected to the first sliding hole 49. The bottom end of the second transmission plate 48 is provided with a second sliding hole 411. A second fixing pin fixedly mounted on the slide rod 412 is located inside the second sliding hole 411 and is slidably connected to the second sliding hole 411. The slide rod 412 is located on the bottom surface of the upper clamping seat 41, and a clamping plate 413 for clamping the camshaft is fixedly mounted on the slide rod 412. A slide rail is provided on the bottom surface of the upper clamping seat 41 to guide the horizontal sliding of the clamping plate 413, so that the clamping plate 413 slides along a straight line through the central axis of the upper clamping seat 41, thereby clamping the top end of the camshaft onto the upper clamping seat 41.

[0038] The lower clamping structure 5 includes a lower clamping seat 51 corresponding to the upper clamping seat 41, and the lower clamping seat 51 is coaxially arranged with the upper clamping seat 41. The lower clamping seat 51 is rotatably connected to the water tank 12 via a bearing seal. A motor is installed inside the base 11 to drive the lower clamping seat 51 to rotate. The motor drives the lower clamping seat 51 to rotate via a transmission belt and a transmission wheel 52 fixedly installed at the bottom of the lower clamping seat 51. The lower clamping seat 51 has a certain installation height in the water tank 12 to facilitate the flow of water out of the lower clamping seat 51.

[0039] like Figure 10 , Figure 11As shown. The lower retainer 51 has a clearance hole 53 at its center for the cleaning head 25 to pass through. The top of the clearance hole 53 has a lower positioning surface for positioning the bottom end of the camshaft. A second groove for mounting the second sliding sleeve 54 is provided on the lower positioning surface. The second sliding sleeve 54 is connected to the bottom surface of the second groove by a seventh spring 55, which applies an upward thrust to the first sliding sleeve 45. The second sliding sleeve 54 slides up and down within the second groove. Several second mounting slots 56 arranged in a circular array are provided on the side wall of the lower retainer 51. An L-shaped third transmission plate 57 is provided within each second mounting slot 56, with its middle portion rotatably connected to the second mounting slot 56. A third sliding hole 58 is provided at the bottom end of the third transmission plate 57. A third fixing pin is fixedly mounted on the second connecting rod 59 hinged to the second sliding sleeve 54. The third fixing pin is located within the third sliding hole 58 and slidably connected to it. The bottom of the clearance hole 53 is provided with a drain hole 510, and the clearance hole 53 is connected to the water tank 12 through the drain hole 510.

[0040] The cleaning method of the above-mentioned camshaft inner bore 44 cleaning device includes the following steps: S1. Insert the bottom end of the camshaft into the lower retainer 51 and the top end of the camshaft into the upper retainer 41. The cylinder 43 drives the pressure plate 42 to descend. The bottom end of the camshaft applies a downward thrust to the second sliding sleeve 54, compressing the seventh spring 55. The second sliding sleeve 54 drives the third transmission plate 57 to rotate through the second connecting rod 59 and the third sliding hole 58. The third transmission plate 57 presses the bottom end of the camshaft tightly into the lower retainer 51. The top end of the camshaft applies an upward thrust to the first sliding sleeve 45, compressing the sixth spring 46. The first sliding sleeve 45 drives the second transmission plate 48 to rotate through the first connecting rod 410 and the first sliding hole 49. The bottom end of the second transmission plate 48 drives the sliding rod 412 to slide through the second sliding hole 411. The sliding rod 412 drives the clamping plate 413 to slide towards the inner hole 44, clamping the top end of the camshaft into the upper retainer 41.

[0041] S2. Start the first motor 16. The first motor 16 drives the slide 14 to move downward through the lead screw 15. The slide 14 drives the first rotating shaft 19 to move synchronously. The rack 112 drives the transmission gear 111 to rotate. The transmission gear 111 drives the first bevel gear 113 to rotate through the first rotating shaft 19. The first bevel gear 113 drives the second rotating shaft 115 to rotate through the second bevel gear 114. The second rotating shaft 115 drives the rotating plate 117 to rotate synchronously. The rotating plate 117 drives the slide plate 18 to move up and down reciprocally through the first transmission plate 118. The slide plate 18 drives the mounting shaft 21 and the fixing rod 31 to move synchronously. The mounting shaft 21 drives the cleaning head 25 to move above the inner hole 44 of the camshaft. The fixing rod 31 drives the brush head 32 to move to both sides of the outer surface of the camshaft.

[0042] S3. Start the second motor 22. The second motor 22 drives the mounting shaft 21 to rotate via the synchronous belt 23 and synchronous pulley. The mounting shaft 21 drives the cleaning head 25 to rotate synchronously. The cleaning plate 28 is inserted into the inner hole 44. The roller 27 is squeezed by the inner hole 44 of the camshaft. The roller 27 drives the support rod 26 to slide into the cleaning head 25. The second spring 215 is stretched. The support rod 26 drives the transmission seat 210 to slide downward via the first inclined surface. The first spring 213 is compressed. The transmission seat 210 drives the transmission block 216 to slide outward via the second inclined surface and the transmission inclined surface. The transmission block 216 drives the cleaning plate 28 to slide outward via the connecting plate 217. The cleaning plate 28 is in close contact with the wall of the inner hole 44 to clean the inner hole 44. The roller 27 supports the cleaning head 25. High-pressure water enters the internal cavity of the mounting shaft 21 through the rotary joint. The high-pressure water inside the mounting shaft 21 is sprayed out through the bottom nozzle and sprayed onto the inner wall of the camshaft inner hole 44. The water in the camshaft inner hole 44 is discharged into the water tank 12 through the drain hole 510 at the bottom of the lower bracket 51.

[0043] S4. The motor inside the base 11 drives the lower bracket 51 to rotate via the transmission wheel 52. The lower bracket 51 drives the camshaft and the upper bracket 41 to rotate synchronously. The rotation direction of the camshaft is opposite to the rotation direction of the cleaning head 25. The brush plate 37 on the brush head 32 is in close contact with the outer surface of the camshaft under the action of the fourth spring 36 and the fifth spring 310. The nozzle on the fixing rod 31 sprays water onto the outer surface of the camshaft to brush the outer surface of the camshaft.

[0044] S5. After the cleaning head 25 moves to the bottom of the camshaft inner hole 44, the first motor 16 reverses, and the cleaning head 25 and the brush head 32 begin to slide upward to further clean the camshaft. After cleaning is completed, the first motor 16, the second motor 22, and the motor stop rotating, the cylinder 43 retracts, and the camshaft is removed from the lower retainer 51.

[0045] Therefore, the camshaft inner hole cleaning device and cleaning method described in this invention can solve the problem of poor cleaning effect of existing cleaning devices on camshaft inner holes.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A camshaft inner bore cleaning device, characterized in that: The system includes a frame; a water tank is installed on the base of the frame, and a lower clamping structure is installed inside the water tank to fix the bottom of the camshaft; a support plate is installed on the base, and a slide plate is installed on the upper part of the support plate; a sliding structure is installed on the support plate to drive the slide plate to slide vertically; an internal cleaning mechanism is installed on the slide plate to clean the inner hole of the camshaft; an external brushing mechanism is installed on the outside of the slide plate to clean the outside of the camshaft; and an upper clamping mechanism is installed on the support plate to clamp the top of the camshaft. The sliding structure includes a slide block, a guide rail on a support plate that guides the vertical sliding of the slide block, a vertical lead screw on the support plate, the top end of the lead screw being rotatably connected to the support plate, the bottom end of the lead screw being rotatably connected to a fixed plate, the fixed plate being fixedly disposed in the middle of the support plate, and a threaded hole on the slide block for the lead screw to pass through and be adapted to the lead screw; a sliding plate is located between two slide blocks, the sliding plate is slidably connected to the slide blocks, and a transmission component on the slide block is provided to drive the sliding plate to slide up and down reciprocally; The transmission assembly includes a first rotating shaft, which is rotatably connected to a first support seat on the slide. A transmission gear is provided on the first rotating shaft, and a vertical rack that meshes with the transmission gear is provided on the support plate. A first bevel gear is provided on the first rotating shaft, and a second bevel gear that meshes with the first bevel gear is provided on a second rotating shaft. The second rotating shaft is rotatably connected to a second support seat on the slide. A rotating plate is fixedly provided at the end of the second rotating shaft, and the rotating plate is hinged to the slide plate through a first transmission plate. The internal cleaning mechanism includes several internal cleaning units arranged in a linear array on the slide plate. The slide plate is equipped with a power structure that drives the internal cleaning units to rotate synchronously. The power structure includes a second motor mounted on the slide plate. The mounting shaft of the internal cleaning unit is rotatably connected to the slide plate through bearings. The synchronous pulley on the mounting shaft is connected to the synchronous pulley on the output shaft of the second motor through a synchronous belt. Guide wheels are provided between the mounting shafts. The synchronous belt is wound around the guide wheels. The guide wheels are rotatably connected to the slide plate. The mounting shaft has a hollow structure, and the bottom of the mounting shaft is provided with spray holes arranged in a circular array. The spray holes are connected to the internal cavity of the mounting shaft, and the top of the mounting shaft is connected to external high-pressure water through a rotary joint. A cleaning head is provided at the bottom of the mounting shaft. The cleaning head has a mounting cavity inside. A transmission seat is provided at the center of the mounting cavity. A support structure that contacts the transmission seat is provided at the upper part of the mounting cavity. A cleaning structure that contacts the transmission seat is provided at the lower part of the mounting cavity. The support structure drives the cleaning structure to slide through the transmission seat. A hole for a fixing post to pass through is provided at the center of the transmission seat. The fixing post is fixed to the bottom of the cleaning head and is coaxial with the mounting shaft. A first spring that applies an upward pushing force to the transmission seat is provided between the bottom end of the transmission seat and the mounting cavity. The support structure includes several support rods arranged in a circular array and slidably disposed on the upper part of the cleaning head. A roller is rotatably disposed at the end of the support rod that extends out of the cleaning head. A positioning plate is disposed on the support rod. A second spring is disposed between the positioning plate and the inner wall of the mounting cavity so that one end of the support rod contacts the first inclined surface of the upper part of the transmission seat. The cleaning structure includes several cleaning plates arranged in a circular array at the lower part of the cleaning head. The middle part of the cleaning plate is connected to the transmission block through a connecting plate. The side wall of the cleaning head is provided with a through hole that allows the connecting plate to pass through and guides the horizontal sliding of the connecting plate. The transmission block is provided with a transmission inclined surface that matches the second inclined surface at the lower part of the transmission seat. A third spring is provided between the transmission block and the mounting cavity to make the transmission inclined surface of the transmission block contact the second inclined surface at the lower part of the transmission seat. The first inclined plane and the second inclined plane have opposite directions of inclination.

2. The camshaft inner bore cleaning device according to claim 1, characterized in that: The external cleaning mechanism includes external cleaning units corresponding to the internal cleaning units. Each external cleaning unit includes cleaning heads symmetrically arranged on both sides of the cleaning head. The cleaning heads are fixedly connected to the sliding plate via fixed rods. The fixed plate has through holes through which the mounting shaft and the fixed rod pass. Inside the cleaning head, there is a partition that divides the internal cavity of the cleaning head into several limiting cavities. A mounting plate is slidably arranged in each limiting cavity. The mounting plate is connected to the bottom of the limiting cavity via a fourth spring. Several cleaning plates are arranged outside the mounting plate. The arrangement direction of the cleaning plates on the mounting plate is perpendicular to the arrangement direction of the mounting plates on the cleaning head. The cleaning plates are connected to the mounting plate via a fifth spring. Guide posts are provided at both ends of the cleaning plates to guide the sliding of the cleaning plates. Fixed sleeves corresponding to the guide posts are provided on the mounting plate. The guide posts are located inside the fixed sleeves and are slidably connected to the fixed sleeves.

3. The camshaft inner bore cleaning device according to claim 2, characterized in that: The upper clamping mechanism includes a pressure plate located below the fixed plate. The pressure plate has a through hole for the brush head to pass through. An upper clamping seat, corresponding to the mounting shaft, is rotatably mounted on the pressure plate. The upper clamping seat is coaxial with the mounting shaft. A cylinder on the fixed plate drives the pressure plate to rise and fall. An inner hole for the cleaning head to pass through is located at the center of the upper clamping seat. The inner hole is coaxial with the upper clamping seat. An upper positioning surface at the bottom of the inner hole positions the top of the camshaft. A first groove for mounting a first sliding sleeve is provided on the upper positioning surface. The first sliding sleeve is connected to the top surface of the first groove by a sixth spring, which applies a downward thrust to the first sliding sleeve. The side wall of the upper clamping seat is provided with… Several first mounting slots are arranged in a circular array. A second transmission plate is installed in the first mounting slot. The middle part of the second transmission plate is rotatably connected to the first mounting slot. A first sliding hole is provided at the top of the second transmission plate. A first fixing pin is provided on the first connecting rod hinged to the top of the first sliding sleeve. The first fixing pin is located in the first sliding hole and is slidably connected to the first sliding hole. A second sliding hole is provided at the bottom of the second transmission plate. A second fixing pin is provided on the slide rod, located in the second sliding hole and slidably connected to the second sliding hole. The slide rod is located on the bottom surface of the upper clamping seat. A clamping plate for clamping the camshaft is provided on the slide rod. A slide rail that guides the horizontal sliding of the clamping plate is provided on the bottom surface of the upper clamping seat.

4. The camshaft inner bore cleaning device according to claim 3, characterized in that: The lower clamping structure includes a lower clamping seat corresponding to the upper clamping seat, the lower clamping seat being coaxially arranged with the upper clamping seat and rotatably connected to the water tank in a sealed manner. A motor is installed inside the base, driving the lower clamping seat to rotate via a transmission wheel located at the bottom of the lower clamping seat. A clearance hole is provided at the center of the lower clamping seat for the cleaning head to pass through. A lower positioning surface is provided at the top of the clearance hole for positioning the bottom end of the camshaft. A second groove for mounting a second sliding sleeve is provided on the lower positioning surface. The second sliding sleeve and the bottom surface of the second groove are connected by a seventh spring, which applies an upward thrust to the first sliding sleeve. Several second mounting slots are arranged in a circular array on the side wall of the lower clamping seat. A third transmission plate is installed in each of the second mounting slots. The middle part of the third transmission plate is rotatably connected to the second mounting slot. A third sliding hole is provided at the bottom of the third transmission plate. A third fixing pin is provided on the second connecting rod hinged to the second sliding sleeve. The third fixing pin is located in the third sliding hole and slidably connected to the third sliding hole. A drain hole is provided at the bottom of the clearance hole, and the clearance hole communicates with the water tank through the drain hole.

5. The cleaning method of the camshaft inner bore cleaning device according to claim 4, characterized in that, Includes the following steps: S1. Insert the bottom end of the camshaft into the lower cassette and the top end of the camshaft into the upper cassette. The cylinder drives the pressure plate to descend. The bottom end of the camshaft applies a downward thrust to the second sliding sleeve, compressing the seventh spring. The second sliding sleeve drives the third transmission plate to rotate through the second connecting rod and the third sliding hole. The third transmission plate presses the bottom end of the camshaft tightly into the lower cassette. The top end of the camshaft applies an upward thrust to the first sliding sleeve, compressing the sixth spring. The first sliding sleeve drives the second transmission plate to rotate through the first connecting rod and the first sliding hole. The bottom end of the second transmission plate drives the slide rod to slide through the second sliding hole. The slide rod drives the clamping plate to slide towards the inner hole, clamping the top end of the camshaft into the upper cassette. S2. Start the first motor. The first motor drives the slide to move downward through the lead screw. The slide drives the first rotating shaft to move synchronously. The rack drives the transmission gear to rotate. The transmission gear drives the first bevel gear to rotate through the first rotating shaft. The first bevel gear drives the second rotating shaft to rotate through the second bevel gear. The second rotating shaft drives the rotating plate to rotate synchronously. The rotating plate drives the slide plate to move up and down reciprocally through the first transmission plate. The slide plate drives the mounting shaft and the fixing rod to move synchronously. The mounting shaft drives the cleaning head to move above the inner hole of the camshaft. The fixing rod drives the brush head to move to both sides of the outer surface of the camshaft. S3. Start the second motor. The second motor drives the mounting shaft to rotate via the synchronous belt and synchronous pulley. The mounting shaft drives the cleaning head to rotate synchronously. The cleaning plate is inserted into the inner hole. The roller is squeezed by the inner hole of the camshaft. The roller drives the support rod to slide into the cleaning head. The second spring is stretched. The support rod drives the transmission seat to slide downward via the first inclined surface. The first spring is compressed. The transmission seat drives the transmission block to slide outward via the second inclined surface and the transmission inclined surface. The transmission block drives the cleaning plate to slide outward via the connecting plate. The cleaning plate is in close contact with the inner hole wall to clean the inner hole. The roller supports the cleaning head. High-pressure water enters the inner cavity of the mounting shaft through the rotary joint. The high-pressure water in the mounting shaft is sprayed out through the bottom spray hole and sprayed onto the inner wall of the inner hole of the camshaft. The water in the inner hole of the camshaft is discharged into the water tank through the drain hole at the bottom of the lower bracket. S4. The motor inside the base drives the lower bracket to rotate through the transmission wheel. The lower bracket drives the camshaft and the upper bracket to rotate synchronously. The rotation direction of the camshaft is opposite to the rotation direction of the cleaning head. The brush plate on the brush head is in close contact with the outer surface of the camshaft under the action of the fourth and fifth springs. The nozzle sprays water onto the outer surface of the camshaft to clean it. S5. After the cleaning head moves to the bottom of the inner hole of the camshaft, the first motor reverses and the cleaning head and brush head further clean the camshaft. After cleaning, the first motor, the second motor, and the third motor stop rotating, the cylinder retracts, and the camshaft is removed from the lower bracket.

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