Ultrasonic cleaning device for camshaft

Abstract

The invention relates to the technical field of camshaft cleaning, and discloses an ultrasonic cleaning device for camshafts, which comprises an ultrasonic cleaning machine and a plurality of cleaning tanks, each cleaning tank is internally provided with an inclined cleaning assembly, and each inclined cleaning assembly comprises a plurality of fixed sleeves and a plurality of spiral grooves; the fixing sleeve and the spiral groove are obliquely arranged, the camshaft is obliquely placed in the cleaning tank through the fixing sleeve, the problem of cleaning dead angles is effectively solved, the surface of the camshaft is prevented from being attached to the bottom of the cleaning tank through the oblique placement mode, energy generated by ultrasonic waves can evenly act on all parts of the camshaft, and the cleaning effect is improved. Meanwhile, due to the existence of the spiral grooves, the cleaning liquid cleans the two ends of the cam shaft in a spiral flowing mode, the flowing mode prevents the problem of cleaning dead angles caused by the fact that the two ends of the cam shaft are fixed to the maximum extent, and therefore the cleaning quality of the cam shaft is improved.

Description

Technical Field

[0001] The invention relates to the technical field of camshaft cleaning, in particular to an ultrasonic cleaning device for a camshaft. Background Art

[0002] The ultrasonic cleaning device uses the high-frequency vibrations generated by ultrasound in the liquid to form tiny bubbles that explode rapidly, generating a huge impact force, thereby removing dirt and impurities from the surface of the camshaft.

[0003] However, there are still some problems with the existing ultrasonic cleaning devices for camshafts: First, in the preparation stage before cleaning, the operator needs to place the camshaft on the cleaning tank. Due to the complex structure of the camshaft and its uneven surface, its surface can easily fit with the bottom of the cleaning tank. During the cleaning process, the energy generated by the ultrasonic wave is difficult to be effectively transmitted to the fitting part, so that the fitting part of the camshaft and the cleaning tank forms a cleaning dead angle. The cam is a key structure of the camshaft, and its shape is irregular and the surface curvature varies greatly. Dirt and impurities will remain on the cam part that has not been fully cleaned due to fitting, which not only affects the appearance of the camshaft, but more importantly, the dirt will increase the friction coefficient. When the cam contacts other components, the increased friction will aggravate wear, thereby shortening the service life of the camshaft and related components.

[0004] To ensure the cleaning quality, the operator often needs to observe the surface of the camshaft after cleaning. If the surface is not clean, it needs to be cleaned again because the depressions in the cam part make it difficult to clean manually. However, what is troubling is that even if the same energy is consumed, it is difficult to achieve the same cleaning effect as the first cleaning.

[0005] This is because during the first cleaning process, some dirt has formed a more stubborn adhesion layer on the camshaft surface. For example, some dirt is not completely removed by the cleaning fluid and ultrasound during the first cleaning, but chemical and physical changes have occurred, making them more closely bonded to the camshaft surface. Moreover, when cleaning again, since the camshaft has undergone a cleaning process, its surface microstructure has undergone some changes, such as an increase in surface roughness, which will also affect the cleaning effect and reduce the cleaning efficiency. Therefore, the problem of incomplete cleaning still exists.

[0006] Secondly, during the cleaning process, in order to ensure full contact between the cleaning liquid and the camshaft, the cleaning liquid circulation method is often relied upon. However, the cam root structure of the camshaft is complex, with negative pressure in shape and large volume, and there are concave corners. This special structure brings many challenges to ultrasonic cleaning.

[0007] Ultrasonic cleaning is mainly based on the cavitation effect, that is, tiny bubbles in the liquid are generated, grown and collapsed under the action of the ultrasonic field. The local high temperature, high pressure and strong shock wave generated during the collapse can remove dirt. However, at the recessed corners of the cam root, the path of ultrasonic propagation becomes complicated, and ultrasonic energy is difficult to be evenly distributed in an ideal way. This results in the generation and collapse of cavitation bubbles in these areas not being able to proceed at normal frequency and intensity, which greatly reduces the effect of dirt removal. At the same time, when the cleaning fluid circulates to the root of the cam, due to the irregularity of the structure, the scouring force generated will be partially reflected or scattered, just like light will be reflected and scattered when encountering an irregular surface. The flow energy of the cleaning fluid is dispersed and cannot be effectively concentrated on the dirt attachment surface.

[0008] From the perspective of cleaning effect, the cam root is a key part of the camshaft. Incomplete cleaning will directly affect the cleanliness of the entire camshaft. Residual dirt will change the surface characteristics of the camshaft, such as increasing the surface roughness. In the subsequent working process of the camshaft, this change will affect the matching accuracy with other components.

[0009] From the perspective of product quality and reliability, the dirt residue contains corrosive substances. During the long-term operation of the camshaft, these corrosive substances will gradually erode the surface of the camshaft, resulting in defects such as corrosion pits on the surface. This will not only weaken the structural strength of the camshaft, but may also cause fatigue cracks. Finally, due to the incomplete cleaning of the cam root, in order to achieve an acceptable cleanliness standard, the cleaning process needs to be repeated many times, which undoubtedly increases the time of the cleaning process and reduces production efficiency. Moreover, multiple cleanings mean more cleaning fluid consumption and more equipment running time, thereby increasing energy consumption and cleaning fluid costs. At the same time, due to the unstable cleaning effect, the defective rate of the product will increase, increasing the waste loss part of the production cost.

[0010] To this end, the present invention provides an ultrasonic cleaning device for a camshaft. Summary of the invention

[0011] The object of the present invention is to provide an ultrasonic cleaning device for a camshaft to solve the problems raised in the above-mentioned background technology.

[0012] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultrasonic cleaning device for a camshaft, comprising an ultrasonic cleaning machine and a plurality of cleaning tanks, each of the cleaning tanks being provided with an inclined cleaning assembly, the inclined cleaning assembly comprising a plurality of fixed sleeves and a plurality of spiral grooves, the fixed sleeves and the spiral grooves being both inclined.

[0013] Every two of the fixed sleeves are arranged as a group, and each group of the fixed sleeves are arranged in mirror symmetry, and several groups of fixed sleeves are arranged inside the cleaning tank. The fixed sleeves provide inclined supporting force by themselves, so that the camshaft no longer fits with the edge of the cleaning tank, and further improves the problem of cleaning dead corners in the camshaft gap.

[0014] The spiral grooves are all opened inside the fixed sleeve, and the radius of the end of the spiral groove away from the side wall of the cleaning groove gradually decreases. The spiral groove guides the cleaning liquid to move in a spiral motion and cleans both sides of the camshaft.

[0015] An ultrasonic source is installed in the ultrasonic cleaning machine, and the ultrasonic source is arranged on both sides of the inner wall of the ultrasonic cleaning machine.

[0016] Preferably, the fixed sleeve is fixedly connected to a guide cover on one side away from the center of the cleaning tank, and the guide cover gradually expands outward on the side away from the fixed sleeve. A pillar is provided inside each fixed sleeve, and a fixing ring is installed on the outer surface of the fixed sleeve, and the end of the fixing ring away from the fixed sleeve is fixedly connected to the outer surface of the cleaning tank.

[0017] Preferably, the pillars are all made of elastic material, specifically silicone rubber material, and the pillars are fixedly connected with a plurality of protrusions arranged equidistantly in a ring shape on one side close to the interior of the fixed sleeve, and a plurality of connecting ribs are fixedly connected between the pillars and the air guide cover.

[0018] Preferably, the surface of the fixed sleeve is provided with a guide hole interconnected with the spiral groove.

[0019] Preferably, the guide holes are all arranged in a staggered manner with respect to the connecting ribs.

[0020] Preferably, the fixed sleeve is of split design, comprising a main sleeve and a secondary sleeve, wherein one end of the secondary sleeve close to the air deflector is rotatably connected to the top of the main sleeve, while one end of the secondary sleeve away from the air deflector is clamped to the outer surface of the main sleeve.

[0021] Preferably, a dynamic pendulum assembly is provided inside the ultrasonic cleaning machine, and the dynamic pendulum assembly includes a curved track symmetrically installed inside the ultrasonic cleaning machine, a rotating shaft is symmetrically rotatably connected to the inner wall of the ultrasonic cleaning machine, a plurality of fixed curved blades are fixedly connected to the outer surface of the rotating shaft in a circular shape and equidistantly arranged, an external motor is installed on the side of the fixed curved blade away from the center of the ultrasonic cleaning machine and penetrating the inner wall of the ultrasonic cleaning machine, and a plurality of sliding curved blades are installed on the outer surface of the rotating shaft in a circular shape and equidistantly arranged.

[0022] Preferably, the rotating shaft is provided with a plurality of slide grooves which are arranged in a circular shape and are equidistant from each other, and the ends of the sliding curved blades close to the axis of the rotating shaft extend inwardly and are slidably connected to the inside of the slide groove.

[0023] Preferably, one end of each of the sliding curved blades away from the axis of the rotating shaft is fixedly connected to a sliding column, and the sliding columns are slidably connected to the inside of the curved track.

[0024] Preferably, the outer surface of the rotating shaft is fixedly connected with a double-headed rotating rod, and a plurality of inclined blocks in opposite directions are installed on both sides of the double-headed rotating rod.

[0025] Preferably, the roughness of the spiral groove is in the range of Ra1.6-Ra3.2 μm.

[0026] Preferably, a feeding mechanism is installed outside the ultrasonic cleaning machine, and a medium circulation unit is installed inside the ultrasonic cleaning machine.

[0027] Compared with the prior art, the beneficial effects of the present invention are: 1. By placing the camshaft obliquely in the cleaning tank using a fixed sleeve, the problem of cleaning dead angles is effectively solved. The oblique placement avoids the contact between the camshaft surface and the bottom of the cleaning tank, so that the energy generated by the ultrasonic wave can act evenly on various parts of the camshaft, ensuring that each area can be fully cleaned. At the same time, due to the presence of the spiral groove, the cleaning liquid cleans both ends of the camshaft in a spiral flow manner. This flow method prevents the problem of cleaning dead angles at both ends of the camshaft due to being fixed to the greatest extent, thereby improving the cleaning quality of the camshaft, and helping to ensure that the camshaft can maintain good performance during subsequent use, reducing friction and wear caused by residual dirt, thereby extending the service life of the camshaft and related components.

[0028] Compared with the existing ultrasonic cleaning devices for camshafts, the existing devices are prone to cleaning dead corners during cleaning, resulting in incomplete cleaning of the camshaft, requiring multiple cleanings with poor results. The inclined cleaning component solves the problem of cleaning dead corners through a unique inclined placement and spiral groove design, greatly reducing the need for secondary cleaning due to incomplete cleaning, improving cleaning efficiency, reducing cleaning costs, and has significant advantages in improving product quality.

[0029] Among them: the support can ensure that the camshaft maintains a stable position during the cleaning process, and secondly, the elastic characteristics of the support can buffer the vibration during the cleaning process to a certain extent, reduce the collision between the camshaft and the fixed sleeve caused by vibration, and protect the camshaft surface from damage.

[0030] Among them: the raised points on the surface of the pillar can increase the friction with the surface of the camshaft. While ensuring stable support, the raised points can also destroy the adhesion layer of dirt on the surface of the camshaft to a certain extent. When the cleaning fluid flows through, it is easier to carry away the dirt, which improves the efficiency of dirt removal and makes the camshaft surface cleaner.

[0031] Among them: the gradual expansion of the spiral groove helps to shape the spiral, allowing the cleaning fluid to form a more stable and effective spiral flow path, while the contraction part helps to focus the cleaning and can centrally clean both ends of the camshaft.

[0032] While achieving the above-mentioned beneficial effects, the present invention also has the following advantages: First, in addition to avoiding blind spots during cleaning, placing the camshaft at an angle is also conducive to the falling of impurities. During the cleaning process, dirt and impurities are more likely to slide off the surface of the camshaft under the influence of multiple factors such as gravity, the impact force of the cleaning liquid, and ultrasonic vibration. Compared with horizontal placement, the angle of inclination provides a natural sliding channel for impurities, allowing impurities to be discharged from the cleaning area faster and more thoroughly, avoiding the possibility of impurities adhering to the surface of the camshaft again, and further improving the cleanliness of cleaning.

[0033] Secondly, fixing the camshaft by fixing the sleeve and the support brings many benefits. On the one hand, this fixing method can accurately position the camshaft, ensuring that all parts of the camshaft can be cleaned according to the predetermined cleaning plan during the cleaning process. On the other hand, the fixed camshaft will not move or shake under the flushing of the cleaning liquid and the action of ultrasound, ensuring the stability and repeatability of the cleaning process.

[0034] Thirdly, the spiral groove is designed as a split design to facilitate the removal of the camshaft. After cleaning, the operator can easily disassemble the oblique cleaning component parts to easily remove the camshaft, thereby improving the convenience of operation and reducing the risk of contamination or damage to the cleaned camshaft during the removal process. It also facilitates the maintenance and inspection of the interior of the cleaning device.

[0035] 2. During the camshaft cleaning process, the present invention uses an external motor to rotate the rotating shaft, and then drives the fixed curved blades to move, so that the sliding curved blades follow the rotation of the rotating shaft while rotating and sliding back and forth in the slide groove under the restriction of the curved track, forming a dynamic rotary swing mixed motion. This unique motion mode improves the contact efficiency between the cleaning liquid and the camshaft, especially for the complex structure area of ​​the cam root. Through the dynamic rotary swing mixed motion, the cleaning liquid can penetrate into the root of the camshaft, which helps to ensure that every corner of the cam root is fully covered by the cleaning liquid, improving the situation where the traditional cleaning method is difficult to reach the complex recessed corners of the cam root, thereby greatly improving the cleanliness of the entire camshaft.

[0036] Traditional camshaft cleaning mainly relies on the circulation of cleaning fluid, which has many limitations when facing the special structure of the cam root of the camshaft. Its structure is complex, its shape is complex, its volume is large, and it has recessed corners, which makes ultrasonic cleaning ineffective. In contrast, the dynamic swing assembly can directly penetrate into the root of the cam for cleaning, overcoming the problem of incomplete cleaning of this part by traditional cleaning methods, and showing obvious superiority in improving the cleaning effect.

[0037] Among them: the inclined blocks on the surface of the double-headed rotating rod will produce a special disturbance effect on the flow of the cleaning fluid. Since the inclined blocks are in opposite directions, the inclined block on one side causes the cleaning fluid to produce a vortex component in one direction, and the inclined block on the other side produces a vortex component in the opposite direction, thereby forming a complex vortex shear field in the local area. This vortex shear field can greatly increase the mixing intensity of the cleaning fluid, promote the diffusion and convection between different components within the cleaning fluid, and enhance the cleaning fluid's ability to entrain dirt. This process is similar to increasing the "activity" of the cleaning fluid at the microscopic level, making it easier for dirt to detach from the camshaft surface, further improving the cleaning effect.

[0038] In addition to the obvious advantages mentioned above, the present invention also has the following benefits: due to the special compound motion and unique structural design, the cleaning fluid is constantly stirred and renewed around the camshaft, and fresh cleaning fluid can be added to the cleaning area more promptly to take away dirt, thus avoiding the situation where the cleaning efficiency is reduced due to saturation of dirt in local areas.

[0039] In addition, this efficient cleaning method helps to reduce the microscopic damage to the camshaft surface during the cleaning process. Traditional cleaning methods require excessive cleaning due to incomplete cleaning, which can easily cause unnecessary wear or scratches on the camshaft surface. The present invention can achieve better cleaning effects in a shorter time, thereby protecting the surface quality of the camshaft, indirectly improving the service life and product reliability of the camshaft, and further reducing potential risk factors in production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a front three-dimensional schematic diagram of the main structure of the present invention.

[0041] Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention.

[0042] Figure 3 It is a three-dimensional schematic diagram of the cleaning tank in the present invention.

[0043] Figure 4 For the present invention Figure 3 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0044] Figure 5 It is a partial cross-sectional perspective schematic diagram of the cleaning tank in the present invention.

[0045] Figure 6 For the present invention Figure 5 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0046] Figure 7 It is a partial exploded stereoscopic schematic diagram of the fixing sleeve in the present invention.

[0047] Figure 8 It is a three-dimensional schematic diagram of the fixing sleeve in the present invention.

[0048] Fig. 9 It is a cross-sectional perspective schematic diagram of the dynamic swing assembly in the present invention.

[0049] Fig.10 For the present invention Fig. 9 Enlarged three-dimensional schematic diagram of the structure at point C in the middle.

[0050] In the figure: 11. Ultrasonic cleaning machine; 12. Cleaning tank.

[0051] 2. Slanted cleaning assembly; 21. Fixed sleeve; 22. Spiral groove; 23. Support; 24. Air guide cover; 25. Connecting rib; 211. Main sleeve; 212. Auxiliary sleeve.

[0052] 3. Dynamic swing assembly; 31. Curved track; 32. Rotating shaft; 33. Fixed curved blade; 34. Sliding curved blade; 35. Slide groove; 36. Sliding column; 37. Double-headed rotating rod. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that the structure and working principle of the ultrasonic cleaning machine 11 belong to the prior art, and thus will not be described in detail later.

[0055] Similarly, the ultrasonic source only provides cavitation effect on the cleaning liquid for the ultrasonic cleaning machine 11, the loading mechanism only provides the function of placing the cleaning tank 12 into and taking it out of the ultrasonic cleaning machine 11, and the medium circulation unit only provides the circulation function for the cleaning liquid. In view of the universality of the above structure, its specific principle will not be repeated later.

[0056] Please refer to Figures 1 to 4 as well as Figure 7As shown, embodiment 1, an ultrasonic cleaning device for a camshaft, includes an ultrasonic cleaning machine 11 and a plurality of cleaning tanks 12, each cleaning tank 12 is provided with an inclined cleaning component 2 inside, the inclined cleaning component 2 includes a plurality of fixed sleeves 21 and a plurality of spiral grooves 22, and both the fixed sleeves 21 and the spiral grooves 22 are inclined.

[0057] Every two fixed sleeves 21 are arranged as a group, and each group of fixed sleeves 21 are arranged in mirror symmetry, and several groups of fixed sleeves 21 are arranged inside the cleaning tank 12. The fixed sleeves 21 provide inclined supporting force by themselves, so that the camshaft no longer fits with the edge of the cleaning tank 12, and further improves the problem of cleaning dead corners in the camshaft gap.

[0058] The spiral grooves 22 are all opened inside the fixed sleeve 21, and the radius of the end of the spiral groove 22 away from the side wall of the cleaning groove 12 gradually decreases. The spiral groove 22 guides the cleaning liquid to move in a spiral motion and cleans both sides of the camshaft.

[0059] An ultrasonic source is installed in the ultrasonic cleaning machine 11 , and the ultrasonic source is arranged on both sides of the inner wall of the ultrasonic cleaning machine 11 .

[0060] Please refer to Figures 5 to 8 As shown, the side of the fixed sleeve 21 away from the center of the cleaning tank 12 is fixedly connected with a guide cover 24, and the side of the guide cover 24 away from the fixed sleeve 21 gradually expands outward, and each fixed sleeve 21 is provided with a pillar 23 inside, and a fixing ring is installed on the outer surface of the fixed sleeve 21, and the end of the fixing ring away from the fixed sleeve 21 is fixedly connected to the outer surface of the cleaning tank 12, and the pillars 23 are all made of elastic material, specifically silicone rubber material, and the side of the pillars 23 close to the inside of the fixed sleeve 21 is fixedly connected with a plurality of protrusions arranged equidistantly in a ring shape, and a plurality of connecting ribs 25 are fixedly connected between the pillars 23 and the guide cover 24, and the surface of the fixed sleeve 21 is provided with guide holes interconnected with the spiral groove 22, and the guide holes are staggered with the connecting ribs 25.

[0061] It should be noted that the fixed sleeve 21 is a split design, which includes a main sleeve 211 and a secondary sleeve 212. The end of the secondary sleeve 212 close to the air deflector 24 is rotatably connected to the top of the main sleeve 211, and the end of the secondary sleeve 212 away from the air deflector 24 is clamped to the outer surface of the main sleeve 211. The roughness range of the spiral groove 22 is Ra1.6-Ra3.2μm. A feeding mechanism is installed on the outside of the ultrasonic cleaning machine 11, and a medium circulation unit is installed inside the ultrasonic cleaning machine 11. The ultrasonic source is specifically arranged on both sides of the inner wall of the ultrasonic cleaning machine 11 away from the camshaft.

[0062] Specifically, the operator first opens the auxiliary sleeve 212 and puts the two ends of the camshaft into the main sleeve 211 respectively, and then closes the auxiliary sleeve 212. At this time, the camshaft is fixed in the fixed sleeve 21.

[0063] Then the operator starts the device and places the cleaning tank 12 and the camshaft inside it into the ultrasonic cleaning machine 11 through the loading mechanism. At this time, the ultrasonic source starts to work, producing cavitation effect on the cleaning liquid. At the same time, the medium circulation unit causes the cleaning liquid to circulate in the cleaning tank 12, providing a continuous supply of cleaning liquid for the cleaning process.

[0064] Since the fixed sleeve 21 is tilted and every two fixed sleeves 21 are arranged in a mirror-symmetrical arrangement, this placement makes the camshaft in a tilted position in the cleaning tank 12, so that there is no cleaning dead angle in the middle of the camshaft that fits the cleaning tank 12.

[0065] When the ultrasonic wave generated by the ultrasonic source propagates in the cleaning fluid, due to the emission from both sides away from the camshaft, a specific pressure distribution and propagation direction will be formed in the cleaning fluid, and tiny bubbles in the cleaning fluid will be generated, grow and collapse under the action of the ultrasonic field. The shock waves and microjets generated during the collapse will propagate toward the direction of the camshaft. This propagation direction allows the energy in the cleaning fluid to act more concentratedly on the surface of the camshaft, and then the shock waves and microjets will continue to propagate toward the side close to the guide cover 24.

[0066] When the cleaning liquid circulates in the cleaning tank 12, due to the special shape of the guide cover 24, the flow rate and flow direction of the cleaning liquid will change when flowing through the guide cover 24. According to the principles of fluid mechanics, when the fluid flows through the expanded channel, the flow rate will decrease and the pressure will increase. In this process, the kinetic energy of the cleaning liquid will increase.

[0067] When the cleaning liquid obtains kinetic energy after passing through the deflector 24, the connecting ribs 25 play a role in diverting the cleaning liquid. The connecting ribs 25 divide the cleaning liquid into multiple parts, and the cleaning liquid of these parts then enters the spiral groove 22 through the guide holes opened on the surface of the fixed sleeve 21 and interconnected with the spiral groove 22.

[0068] Since the radius of the end of the spiral groove 22 away from the side wall of the cleaning groove 12 gradually decreases, the whole can be divided into a contraction section and an expansion section. According to the continuity equation of the fluid and the law of conservation of angular momentum, when the cleaning liquid flows from a smaller radius area to a larger radius area, the flow rate will decrease and the pressure will increase. This change in pressure and flow rate will cause the cleaning liquid to form a spiral motion. Due to the special shape guidance of the spiral groove 22, the cleaning liquid is more likely to form a spiral fluid in the expansion section. From a microscopic perspective, the cleaning liquid molecules, under the constraints of the pressure difference and the groove wall, make a circular motion along the trajectory of the spiral groove 22 and flow in the expansion direction, thereby forming a spiral fluid.

[0069] In the contraction section of the spiral groove 22, since the cleaning fluid in spiral motion has a certain centrifugal force and axial flow velocity, the centrifugal force will squeeze the cleaning fluid to both sides of the camshaft, while the axial flow velocity will flush the cleaning fluid along the axial direction of the camshaft. This dual action can effectively remove dirt on both sides of the camshaft. For example, for oil stains and metal debris attached to both sides of the camshaft, the cleaning fluid in spiral motion can peel them off the surface of the camshaft and take them away.

[0070] During this process, the support 23 provides elastic support for the camshaft. When the cleaning fluid cleans the camshaft and generates impact force, the support 23 can undergo elastic deformation to buffer the impact force and prevent the camshaft from being damaged by excessive impact. At the same time, the protrusions on the surface of the support 23 will disrupt the flow of the cleaning fluid during the cleaning process and generate local turbulence. According to the diffusion theory of turbulent flow, turbulence can enhance the material exchange between the cleaning fluid and the surface of the camshaft, making it easier for dirt to detach from the surface of the camshaft. The existence of local turbulence causes the cleaning fluid to form small vortices near the support 23. These vortices can penetrate into the tiny depressions on the surface of the camshaft and sweep away the dirt, further improving the cleaning effect.

[0071] When the cleaning process is completed, the ultrasonic source of the ultrasonic cleaning machine 11 is first stopped, and then the cleaning liquid circulation of the medium circulation unit is stopped. After that, the cleaning tank 12 is taken out of the ultrasonic cleaning machine 11 through the loading mechanism. The operator then opens the auxiliary sleeve 212 and removes the cleaned camshaft from the main sleeve 211.

[0072] Please refer to Fig. 9 and Fig.10 As shown, in the second embodiment, on the basis of the first embodiment, a dynamic pendulum assembly 3 is provided inside the ultrasonic cleaning machine 11, and the dynamic pendulum assembly 3 includes a curved rail 31 symmetrically installed inside the ultrasonic cleaning machine 11, and a rotating shaft 32 is symmetrically rotatably connected to the inner wall of the ultrasonic cleaning machine 11, and a plurality of fixed curved blades 33 are fixedly connected to the outer surface of the rotating shaft 32 in a circular and equidistant manner, and an external motor is installed on the side of the fixed curved blade 33 away from the center of the ultrasonic cleaning machine 11 and penetrating the inner wall of the ultrasonic cleaning machine 11, and a plurality of sliding curved blades 34 are installed on the outer surface of the rotating shaft 32 in a circular and equidistant manner.

[0073] Please refer to Fig. 9 and Fig.10 As shown, the rotating shaft 32 is provided with a plurality of slide grooves 35 arranged equidistantly in a ring shape, and the sliding blades 34 at one end close to the axis of the rotating shaft 32 extend inward and are slidably connected to the inside of the slide grooves 35. The end of each sliding blade 34 away from the axis of the rotating shaft 32 is fixedly connected to a slide column 36, and the slide columns 36 are slidably connected to the inside of the curved track 31.

[0074] It should be noted that the outer surface of the rotating shaft 32 is fixedly connected with a double-headed rotating rod 37 , and a plurality of inclined blocks in opposite directions are installed on both sides of the double-headed rotating rod 37 .

[0075] Specifically, in the process of the ultrasonic cleaning machine 11 cleaning the camshaft in the first embodiment, the operator starts the external motor, and after the external motor starts working, it drives the rotating shaft 32 to rotate.

[0076] When the shaft 32 rotates, the fixed curved blades 33 perform circular motion accordingly. According to the principles of fluid mechanics, when the fixed curved blades 33 move in the cleaning liquid, they will generate shear force on the cleaning liquid. This shear force can break the laminar flow state in the cleaning liquid and cause the cleaning liquid to form turbulence. The formation of turbulence is beneficial to the full contact between the cleaning liquid and the dirt on the surface of the camshaft, because the turbulence can increase the mixing degree of the cleaning liquid, so that the energy and chemical substances in the cleaning liquid are more evenly distributed in the cleaning liquid, thereby improving the cleaning effect.

[0077] At the same time, when the shaft 32 rotates, the sliding blade 34 will slide back and forth in the slide groove 35 under the influence of centrifugal force and the limiting effect of the curved track 31 on the slide column 36. This movement mode enables the sliding blade 34 to form a composite motion of rotation and sliding, that is, a dynamic pendulum motion.

[0078] Specifically, the dynamic rotational swinging motion of the sliding blade 34 can change the range and angle of stirring because it can slide while rotating. During the sliding process, the sliding blade 34 can be closer to the root of the camshaft, thereby bringing the cleaning liquid to areas that are difficult to reach with traditional cleaning methods. For example, dirt is often easily accumulated at the connection between the root of the camshaft and the fixed sleeve 21. The sliding blade 34 with dynamic rotational swinging motion can deliver the cleaning liquid to this area in different directions and forces, thereby effectively removing dirt.

[0079] The combined motion of the sliding vanes 34 produces a more complex flow field in the cleaning fluid. Compared with a simple flow field, the flow field produced by the dynamic swinging motion has more vortices and turbulent areas. These vortices and turbulent areas can increase the collision frequency and energy exchange between the cleaning fluid and the camshaft surface. According to the principle of energy transfer, the more frequent the energy exchange between the cleaning fluid and the camshaft surface, the greater the possibility of dirt detaching from the camshaft surface. Moreover, this complex flow field can enable the cleaning fluid to form a more directional flushing force on the camshaft surface, and can effectively clean camshaft surfaces of different shapes and angles.

[0080] Finally, when the rotating shaft 32 rotates, the double-headed rotating rod 37 rotates accordingly, and the inclined block on the double-headed rotating rod 37 will produce a special effect on the cleaning liquid during the rotation process.

[0081] Since the inclined blocks on both sides of the double-headed rotating rod 37 are in opposite directions, during the rotation process, the inclined blocks will generate thrusts in different directions on the cleaning liquid. This thrust in different directions will form a complex pressure distribution in the cleaning liquid. According to the pressure-velocity relationship in fluid mechanics, the cleaning liquid will have different flow rates and flow directions in different pressure areas. This complex pressure distribution and flow field changes further enhance the mixing degree of the cleaning liquid, making the energy distribution in the cleaning liquid more uniform.

[0082] Specifically, the cleaning liquid near the double-headed rotating rod 37 will form local vortices and refluxes under the action of the inclined block. These vortices and refluxes can gather together the dirt particles in the cleaning liquid, making it easier for the cleaning liquid to carry them away. At the same time, this complex flow field also helps to transport the cleaning liquid to various parts of the camshaft, especially some parts with complex shapes that are prone to dirt and grime, such as the transition area where the cam part of the camshaft is connected to the shaft body.

[0083] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0084] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic cleaning device for a camshaft, comprising an ultrasonic cleaning machine (11) and a plurality of cleaning tanks (12), characterized in that: Each cleaning tank (12) is provided with an inclined cleaning assembly (2), the inclined cleaning assembly (2) comprising a plurality of fixed sleeves (21) and a plurality of spiral grooves (22), the fixed sleeves (21) and the spiral grooves (22) being arranged at an angle; every two fixed sleeves (21) are arranged as a group, each group of fixed sleeves (21) being arranged in mirror symmetry, and a plurality of groups of fixed sleeves (21) are provided inside the cleaning tank (12), the fixed sleeves (21) providing an inclined support force by themselves, thereby The camshaft is no longer in contact with the edge of the cleaning groove (12), and the problem of a cleaning dead angle in the camshaft gap is further improved; the spiral grooves (22) are all formed inside the fixed sleeve (21), and the radius of the end of the spiral groove (22) away from the side wall of the cleaning groove (12) gradually decreases, and the spiral groove (22) guides the cleaning liquid to move in a spiral manner through its own guidance, and cleans both sides of the camshaft; an ultrasonic source is installed in the ultrasonic cleaning machine (11), and the ultrasonic source is arranged on both sides of the inner wall of the ultrasonic cleaning machine (11).

2. The camshaft ultrasonic cleaning device according to claim 1, characterized in that: A flow guide cover (24) is fixedly connected to one side of the fixed sleeve (21) away from the center of the cleaning tank (12); the flow guide cover (24) gradually expands outwards on the side away from the fixed sleeve (21); a support (23) is arranged inside each fixed sleeve (21); a fixing ring is installed on the outer surface of the fixed sleeve (21); and one end of the fixing ring away from the fixed sleeve (21) is fixedly connected to the outer surface of the cleaning tank (12).

3. The camshaft ultrasonic cleaning device according to claim 2, characterized in that: The pillars (23) are all made of elastic material, and a plurality of protrusions are arranged in an annular shape and fixedly connected at equal intervals on one side of the pillars (23) close to the interior of the fixed sleeve (21), and a plurality of connecting ribs (25) are fixedly connected between the pillars (23) and the air guide cover (24).

4. The ultrasonic cleaning device for a camshaft according to claim 1, characterized in that: The surface of the fixed sleeve (21) is provided with a guide hole which is in communication with the spiral groove (22).

5. The camshaft ultrasonic cleaning device according to claim 4, characterized in that: The guide holes are all arranged in a staggered manner with respect to the connecting ribs (25).

6. The camshaft ultrasonic cleaning device according to claim 1, characterized in that: The fixed sleeve (21) is of split design, comprising a main sleeve (211) and a secondary sleeve (212); one end of the secondary sleeve (212) close to the air deflector (24) is rotatably connected to the top of the main sleeve (211), while one end of the secondary sleeve (212) away from the air deflector (24) is clamped to the outer surface of the main sleeve (211).

7. The camshaft ultrasonic cleaning device according to claim 1, characterized in that: The ultrasonic cleaning machine (11) is provided with a dynamic swing assembly (3) inside. The dynamic swing assembly (3) comprises a curved rail (31) symmetrically mounted inside the ultrasonic cleaning machine (11). A rotating shaft (32) is symmetrically rotatably connected to the inner wall of the ultrasonic cleaning machine (11). The outer surface of the rotating shaft (32) is fixedly connected to a plurality of fixed curved blades (33) arranged in an annular manner and at equal intervals. An external motor is mounted on the side of the fixed curved blade (33) away from the center of the ultrasonic cleaning machine (11) and penetrating the inner wall of the ultrasonic cleaning machine (11). The outer surface of the rotating shaft (32) is also fixedly connected to a plurality of sliding curved blades (34) arranged in an annular manner and at equal intervals.

8. The ultrasonic cleaning device for a camshaft according to claim 7, characterized in that: The rotating shaft (32) is provided with a plurality of slide grooves (35) arranged in an annular manner and at equal intervals, and the ends of the sliding curved blades (34) close to the axis of the rotating shaft (32) extend inwardly and are slidably connected to the inside of the slide grooves (35).

9. The ultrasonic cleaning device for a camshaft according to claim 8, characterized in that: One end of each sliding curved blade (34) away from the axis of the rotating shaft (32) is fixedly connected to a sliding column (36), and the sliding columns (36) are slidably connected to the inside of the curved track (31).

10. The camshaft ultrasonic cleaning device according to claim 7, characterized in that: The outer surface of the rotating shaft (32) is fixedly connected to a double-headed rotating rod (37), and a plurality of inclined blocks in opposite directions are installed on both sides of the double-headed rotating rod (37).

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