Ultrasonic cleaning device for camshaft

Abstract

The application 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, and each cleaning tank is internally provided with an inclined cleaning assembly; the inclined cleaning assembly comprises a plurality of fixing sleeves and a plurality of spiral grooves; the fixing sleeves and the spiral grooves are both arranged in an inclined mode; the camshafts are placed in the cleaning tanks in an inclined mode through the fixing sleeves, the problem of cleaning dead angles is effectively solved, the inclined placement mode avoids the adhesion of the camshaft surface and the bottom of the cleaning tank, the energy generated by the ultrasonic waves can uniformly act on each part of the camshaft, each area can be fully cleaned, and due to the existence of the spiral grooves, the cleaning liquid can clean the two ends of the camshaft in a spiral flow mode; the flow mode can maximally prevent the problem of cleaning dead angles at the two ends of the camshaft caused by being fixed, and therefore the cleaning quality of the camshafts is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of camshaft cleaning, in particular to an ultrasonic cleaning device for camshafts. BACKGROUND

[0002] The ultrasonic cleaning device is used to remove dirt and impurities on the surface of the camshaft by using the high-frequency vibration generated by the ultrasonic wave in the liquid to form micro-bubbles and rapidly explode to generate a huge impact.

[0003] However, the existing ultrasonic cleaning device for camshafts still has some problems. Firstly, during the preparation stage before cleaning, the operator needs to place the camshaft on the cleaning tank. Due to the complex structure of the camshaft, the surface is uneven, and the surface is easy to stick to the bottom of the cleaning tank. During the cleaning process, the energy generated by the ultrasonic wave is difficult to effectively transmit to the sticking part, so that the sticking part of the camshaft and the cleaning tank forms a cleaning dead angle. The cam is the key structure of the camshaft, and its shape is irregular and the surface curvature changes greatly. The cam part that is not fully cleaned due to sticking will leave dirt and impurities, which not only affects the appearance of the camshaft, but more importantly, the dirt will increase the friction coefficient, and the increased friction will increase the wear when the cam contacts other parts, thereby shortening the service life of the camshaft and related parts.

[0004] To ensure the cleaning quality, the operator often needs to observe the surface of the camshaft after cleaning, and when the surface is not cleaned, it needs to be cleaned again. However, it is difficult to achieve the same cleaning effect as the first cleaning even if the same energy is consumed.

[0005] This is because during the first cleaning process, part of the dirt has formed a more stubborn adhesion layer on the surface of the camshaft. For example, some dirt is affected by the cleaning liquid and ultrasonic wave during the first cleaning, although it is not completely removed, but it has undergone chemical and physical changes, making it more tightly combined with the surface of the camshaft. In addition, during the second cleaning, the microstructure of the surface of the camshaft has changed, such as the increase in surface roughness, which also affects the cleaning effect, resulting in a decrease in cleaning efficiency, so the problem of incomplete cleaning still exists.

[0006] Secondly, during the cleaning process, in order to make the cleaning liquid and the camshaft fully contact, it often relies on the circulation of the cleaning liquid. However, the camshaft has a complex cam root structure, which presents a shape negative pressure and a large volume, and has a concave corner. This special structure brings many challenges to ultrasonic cleaning.

[0007] Ultrasonic cleaning is mainly based on cavitation effect, that is, micro bubbles in liquid are generated, grown and collapsed under the action of ultrasonic field, and the local high temperature, high pressure and strong shock wave generated when collapsing can remove dirt, but at the recessed corners of the cam root, the path of ultrasonic wave propagation becomes complex, and ultrasonic energy is difficult to be uniformly distributed in an ideal way, which leads to that the generation and collapse of cavitation bubbles cannot be carried out at normal frequency and intensity in these areas, so that the effect of dirt removal is greatly reduced, and when the cleaning liquid circulates to the cam root, due to the irregularity of the structure, the generated flushing force will be partially reflected or scattered, which is similar to the reflection and scattering of light when encountering irregular surface, the flow energy of the cleaning liquid is dispersed and cannot be effectively concentrated on the dirt adhesion surface.

[0008] From the cleaning effect, the cam root is a key part of the camshaft, and incomplete cleaning will directly affect the cleanliness of the entire camshaft, and dirt residues will change the surface characteristics of the camshaft, such as increasing the surface roughness, which will affect the fitting accuracy of the camshaft with other parts in the subsequent working process.

[0009] From the aspects of product quality and reliability, dirt residues contain corrosive substances. During the long-term working process of the camshaft, these corrosive substances will gradually erode the surface of the camshaft, resulting in defects such as corrosion pits. This not only weakens the structural strength of the camshaft, but also may cause fatigue cracks to occur. Finally, due to incomplete cleaning of the cam root, in order to achieve an acceptable cleanliness standard, the cleaning process needs to be repeated multiple times, which undoubtedly increases the time of the cleaning process and reduces the production efficiency. Moreover, multiple cleaning means more cleaning liquid consumption, more equipment running time, thereby increasing energy consumption and cleaning liquid cost, and due to unstable cleaning effect, it also leads to the increase of product reject rate, increasing the waste loss part of the production cost.

[0010] Therefore, the present application provides an ultrasonic cleaning device for camshafts. SUMMARY

[0011] The present application aims to provide an ultrasonic cleaning device for camshafts to solve the problems raised in the background art.

[0012] To achieve the above-mentioned purpose, the present application provides the following technical solution: an ultrasonic cleaning device for camshafts, comprising an ultrasonic cleaning machine and a plurality of cleaning tanks, each of the cleaning tanks is provided with an inclined cleaning assembly inside, the inclined cleaning assembly comprises a plurality of fixing sleeves and a plurality of spiral grooves, and the fixing sleeves and the spiral grooves are both inclined.

[0013] Each two fixing sleeves are arranged as a group, each group of the fixing sleeves is arranged in mirror symmetry, and the inside of the cleaning tank is provided with a plurality of groups of fixing sleeves, the fixing sleeves provide inclined support force by themselves, so that the camshaft is no longer attached to the edge of the cleaning tank, and the problem of cleaning dead angle in the gap of the camshaft is further improved.

[0014] The spiral grooves are arranged in the inside of the fixing sleeves, and the radius of the end of the spiral groove away from the side wall of the cleaning tank gradually decreases, the spiral groove guides the cleaning liquid to move in a spiral manner, and cleans the two sides of the camshaft.

[0015] The ultrasonic cleaning machine is provided with an ultrasonic source arranged on the two sides of the inner wall of the ultrasonic cleaning machine.

[0016] Preferably, the fixing sleeve is fixedly connected with a fairing away from the center of the cleaning tank, the side away from the fixing sleeve of the fairing gradually expands outward, the inside of each fixing sleeve is provided with a support column, the outer surface of the fixing sleeve is provided with a fixing ring, and the end away from the fixing sleeve of the fixing ring is fixedly connected to the outer surface of the cleaning tank.

[0017] Preferably, the support column is made of elastic material, specifically, the support column is made of silicone rubber material, the side close to the inside of the fixing sleeve of the support column is fixedly connected with a plurality of convex points arranged in a ring shape at equal intervals, and the support column and the fairing are fixedly connected with a plurality of connecting ribs.

[0018] Preferably, the fixing sleeve is provided with a guide hole communicating with the spiral groove.

[0019] Preferably, the guide hole is arranged in a staggered manner with the connecting rib.

[0020] Preferably, the fixing sleeve is designed in a split type, which includes a main sleeve and an auxiliary sleeve, the end close to the fairing of the auxiliary sleeve is rotatably connected to the top of the main sleeve, and the end away from the fairing of the auxiliary sleeve is clamped to the outer surface of the main sleeve.

[0021] Preferably, the inside of the ultrasonic cleaning machine is provided with a dynamic rotary swing assembly, the dynamic rotary swing assembly includes a curved track symmetrically arranged in the inside of the ultrasonic cleaning machine, a rotating shaft symmetrically rotatably connected to the inner wall of the ultrasonic cleaning machine, a plurality of fixed curved leaves fixedly connected to the outer surface of the rotating shaft in a ring shape at equal intervals, an external motor installed on the side 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 leaves arranged in a ring shape at equal intervals on the outer surface of the rotating shaft.

[0022] Preferably, the rotating shaft is provided with a plurality of sliding grooves arranged in a ring shape at equal intervals, the end close to the shaft center of the sliding curved leaf extends inwardly and is slidingly connected to the inside of the sliding groove.

[0023] Preferably, each of the sliding curved leaves is fixedly connected with a slide column at one end away from the axis of the rotating shaft, and the slide column is slidingly connected to the inside of the curved rail.

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

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

[0026] Preferably, the ultrasonic cleaning machine is externally provided with a feeding mechanism, and internally provided with a medium circulating unit.

[0027] Compared with the prior art, the present application has the following beneficial effects: 1. By placing the camshaft in the cleaning tank at an angle with the fixed sleeve, the problem of cleaning dead angles is effectively solved. The inclined placement avoids the adhesion of the camshaft surface to the bottom of the cleaning tank, so that the energy generated by the ultrasonic waves can uniformly act on each part of the camshaft, ensuring that each area can be fully cleaned. At the same time, due to the existence of the spiral groove, the cleaning liquid flows in a spiral manner to clean the two ends of the camshaft. This flow pattern maximizes the prevention of cleaning dead angles at the two ends of the camshaft due to being fixed, thereby improving the cleaning quality of the camshaft and helping to ensure that the camshaft can maintain good performance in subsequent use, reducing friction and wear caused by dirt residues, thereby prolonging the service life of the camshaft and related parts.

[0028] Compared with the prior art, the present application has the following beneficial effects: 1. By placing the camshaft in the cleaning tank at an angle with the fixed sleeve, the problem of cleaning dead angles is effectively solved. The inclined placement avoids the adhesion of the camshaft surface to the bottom of the cleaning tank, so that the energy generated by the ultrasonic waves can uniformly act on each part of the camshaft, ensuring that each area can be fully cleaned. At the same time, due to the existence of the spiral groove, the cleaning liquid flows in a spiral manner to clean the two ends of the camshaft. This flow pattern maximizes the prevention of cleaning dead angles at the two ends of the camshaft due to being fixed, thereby improving the cleaning quality of the camshaft and helping to ensure that the camshaft can maintain good performance in subsequent use, reducing friction and wear caused by dirt residues, thereby prolonging the service life of the camshaft and related parts.

[0029] Among them: the support can ensure that the camshaft maintains a stable position during cleaning, and the elastic properties of the support can to some extent buffer the vibration during cleaning, reducing the possibility of collision between the camshaft and the fixed sleeve due to vibration, and protecting the surface of the camshaft from damage.

[0030] Among them: the convex points on the surface of the support can increase the friction force with the surface of the camshaft, and at the same time of ensuring stable support, the convex points can to some extent destroy the adhesion layer of the dirt on the surface of the camshaft, making it easier to remove the dirt when the cleaning liquid flows through, improving the efficiency of dirt removal and making the surface of the camshaft cleaner.

[0031] The gradually expanding spiral groove helps the formation of the spiral, so that the cleaning liquid can form a more stable and effective spiral flow path, and the contraction part helps to focus cleaning and can concentrate cleaning on both ends of the camshaft.

[0032] The present application has the following advantages while achieving the above beneficial effects: first, placing the camshaft at an angle not only avoids cleaning dead angles, but also facilitates the falling of impurities. During the cleaning process, dirt and impurities are more likely to slide off the surface of the camshaft under the action of gravity, cleaning liquid impact force, ultrasonic vibration and other factors. Compared with horizontal placement, the angle of inclination provides a natural sliding channel for impurities, allowing impurities to be discharged from the cleaning area more quickly and completely, avoiding the possibility of impurities reattaching to the surface of the camshaft, and further improving the cleanliness of the cleaning process.

[0033] Secondly, fixing the camshaft through the fixing 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 are cleaned according to the predetermined cleaning plan during the cleaning process. On the other hand, the fixed camshaft will not shift or sway under the action of the cleaning liquid and ultrasonic waves, ensuring the stability and repeatability of the cleaning process.

[0034] Thirdly, the spiral groove is designed in a split design, which facilitates the removal of the camshaft. After cleaning is completed, the operator can easily disassemble the inclined cleaning assembly components, thus easily removing the camshaft, thereby improving the convenience of operation, reducing the risk of contamination or damage to the cleaned camshaft during the removal process, and also facilitating maintenance and repair work on the inside of the cleaning device.

[0035] 2. During the cleaning process of the camshaft, the present application uses an external motor to rotate the rotating shaft, which in turn drives the fixed curved leaf to move. The sliding curved leaf rotates while reciprocating in the sliding groove under the restriction of the curved rail, forming a dynamic rotary pendulum mixed motion. This unique motion improves the contact efficiency of the cleaning liquid with the camshaft, especially for the complex structure area of the camshaft root. Through dynamic rotary pendulum mixed motion, the cleaning liquid can penetrate into the root of the camshaft, helping to ensure that every corner of the camshaft root is fully covered by the cleaning liquid, improving the condition that the traditional cleaning method cannot reach the complex recessed corners of the camshaft root, thereby greatly improving the cleanliness of the entire camshaft.

[0036] The traditional camshaft cleaning mainly relies on the cleaning liquid circulation mode, and when facing the special structure of the cam root of the camshaft, there are many limitations, the structure is complex, the shape is complex, the volume is large and there are recessed corners, which makes the ultrasonic cleaning effect poor, compared with, the dynamic rotary swing assembly can directly clean the cam root, overcomes the problem that the traditional cleaning method is not thorough in cleaning this part, and has obvious superiority in improving the cleaning effect.

[0037] Among them: the inclined block on the surface of the double-head rotating rod will produce a special disturbance effect on the flow of the cleaning liquid, because the directions of the inclined blocks are opposite, one side inclined block promotes the cleaning liquid to produce a vortex component in one direction, and the other side inclined block 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 liquid, promote the diffusion and convection between different components inside the cleaning liquid, and enhance the wrapping ability of the cleaning liquid to dirt. This process is similar to increasing the "activity" of the cleaning liquid at the micro level, so that the dirt is more easily separated from the surface of the camshaft, further improving the cleaning effect.

[0038] In addition to the above obvious advantages, the present application also has the following benefits: due to the special compound motion and unique structure design, the cleaning liquid is constantly stirred and updated around the camshaft, and fresh cleaning liquid can be supplied to the cleaning area in time to carry away the dirt, avoiding the situation that the cleaning efficiency is reduced due to saturation of the cleaning liquid in the local area.

[0039] In addition, this efficient cleaning method helps to reduce the micro damage to the surface of the camshaft during the cleaning process. The traditional cleaning method needs excessive cleaning due to incomplete cleaning, which is easy to cause unnecessary wear or scratches on the surface of the camshaft. The present application can achieve good cleaning effect in a short time, thereby protecting the surface quality of the camshaft and indirectly improving the service life and product reliability of the camshaft, further reducing the potential risk factors in the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a front view of the main structure of the present application.

[0041] Figure 2 is a rear view of the main structure of the present application.

[0042] Figure 3 is a perspective view of the cleaning tank in the present application.

[0043] Figure 4 is the structure of the present application Figure 3 is an enlarged perspective view of the structure at A.

[0044] Figure 5 is a partial sectional perspective view of the cleaning tank in the present application.

[0045] Figure 6 For the application Figure 5 structure amplification perspective view at B.

[0046] Figure 7 For the fixed sleeve in the application partial explosion perspective view.

[0047] Figure 8 For the fixed sleeve in the application perspective view.

[0048] Figure 9 For the dynamic swing assembly in the application cutaway perspective view.

[0049] Figure 10 For the application Figure 9 structure amplification perspective view at C.

[0050] Figure: 11, ultrasonic cleaner; 12, cleaning tank.

[0051] 2, inclined cleaning assembly; 21, fixed sleeve; 22, spiral groove; 23, strut; 24, fairing; 25, connecting rib; 211, main sleeve; 212, auxiliary sleeve.

[0052] 3, dynamic swing assembly; 31, curved rail; 32, rotating shaft; 33, fixed curved leaf; 34, sliding curved leaf; 35, sliding groove; 36, sliding column; 37, double-headed rotating rod. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0054] It should be noted that the structure and working principle of the ultrasonic cleaner 11 belong to the prior art, so subsequent details will not be described.

[0055] Similarly, the ultrasonic source only provides cavitation effect on the cleaning liquid for the ultrasonic cleaner 11, the feeding mechanism only provides the function of putting and taking out the cleaning tank 12 from the ultrasonic cleaner 11, and the medium circulating unit only provides the function of circulating the cleaning liquid. In view of the universality of the above structure, the specific principle will not be described subsequently.

[0056] Please refer to the drawings as Figures 1 to 4 and Figure 7As shown in the figure, the embodiment one is an ultrasonic cleaning device for camshaft, which comprises an ultrasonic cleaning machine 11 and a plurality of cleaning tanks 12, and each cleaning tank 12 is internally provided with an inclined cleaning assembly 2, which comprises a plurality of fixed sleeves 21 and a plurality of spiral grooves 22, and the fixed sleeves 21 and the spiral grooves 22 are both inclined.

[0057] Each two fixed sleeves 21 are arranged as a group, each group of fixed sleeves 21 is arranged in mirror symmetry, and the cleaning tank 12 is internally provided with a plurality of groups of fixed sleeves 21, and the fixed sleeves 21 provide inclined support force by themselves, so that the camshaft is no longer attached to the edge of the cleaning tank 12, and the problem of cleaning dead angle in the gap of the camshaft is further improved.

[0058] The spiral grooves 22 are all arranged in the interiors of the fixed sleeves 21, and the radii of the ends of the spiral grooves 22 away from the side walls of the cleaning tank 12 gradually decrease, and the spiral grooves 22 guide the cleaning liquid to move in a spiral manner and clean the two sides of the camshaft.

[0059] The ultrasonic cleaning machine 11 is internally provided with an ultrasonic source, and the ultrasonic source is arranged on the two sides of the inner wall of the ultrasonic cleaning machine 11.

[0060] Please refer to the figure Figures 5 to 8 As shown in the figure, the fixed sleeves 21 are all fixedly connected with the fairings 24 away from the centers of the cleaning tanks 12, the fairings 24 gradually expand outward away from the fixed sleeves 21, each fixed sleeve 21 is internally provided with a support column 23, the outer surfaces of the fixed sleeves 21 are all provided with fixed rings, and the ends of the fixed rings away from the fixed sleeves 21 are fixedly connected to the outer surfaces of the cleaning tanks 12, the support columns 23 are all made of elastic material, and are specifically made of silicone rubber material, the sides of the support columns 23 close to the interiors of the fixed sleeves 21 are all fixedly connected with a plurality of convex points arranged in a ring shape at equal intervals, the support columns 23 and the fairings 24 are all fixedly connected with a plurality of connecting ribs 25, and the surfaces of the fixed sleeves 21 are all provided with guide holes in communication with the spiral grooves 22, and the guide holes are all arranged in a staggered manner with the connecting ribs 25.

[0061] It should be noted that the fixed sleeves 21 are designed in a split manner, and comprise main sleeves 211 and auxiliary sleeves 212, the ends of the auxiliary sleeves 212 close to the fairings 24 are rotatably connected to the top of the main sleeves 211, and the ends of the auxiliary sleeves 212 away from the fairings 24 are clamped to the outer surfaces of the main sleeves 211, the roughness range of the spiral grooves 22 is Ra1.6-Ra3.2μm, the ultrasonic cleaning machine 11 is externally provided with a feeding mechanism, the ultrasonic cleaning machine 11 is internally provided with a medium circulating unit, and the ultrasonic source is specifically arranged on the two 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 inserts both ends of the camshaft into the main sleeve 211, then closes the auxiliary sleeve 212. At this time, the camshaft is fixed inside the fixed sleeve 21.

[0063] The operator then starts the device and puts the cleaning tank 12 and its internal camshaft into the ultrasonic cleaner 11 through the feeding mechanism. At this time, the ultrasonic source starts to work, generating cavitation effect on the cleaning fluid. At the same time, the media circulation unit makes the cleaning fluid circulate in the cleaning tank 12, providing a continuous supply of cleaning fluid for the cleaning process.

[0064] Since the fixed sleeve 21 is set at an angle, and every two fixed sleeves 21 are set as a mirror symmetrical group, this placement method makes the camshaft in the cleaning tank 12 at an angle, so that there is no longer a cleaning dead corner in the middle of the camshaft that is in contact with the cleaning tank 12.

[0065] When the ultrasonic waves generated by the ultrasonic source propagate 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. The tiny bubbles in the cleaning fluid will be generated, grow and collapse under the action of the ultrasonic field. The shock waves and micro-jets generated when they collapse will propagate in the direction of the camshaft. This propagation direction makes the energy in the cleaning fluid more concentrated on the surface of the camshaft, and thus the shock waves and micro-jets will continuously propagate towards the side closer to the guide shroud 24.

[0066] When the cleaning fluid circulates in the cleaning tank 12, due to the special shape of the guide shroud 24, the flow rate and direction of the cleaning fluid will change when it flows through the guide shroud 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. During this process, the kinetic energy of the cleaning fluid will increase.

[0067] After the cleaning fluid gains kinetic energy through the guide shroud 24, the connecting rib 25 acts as a diversion mechanism for the cleaning fluid. The connecting rib 25 divides the cleaning fluid into multiple parts, and these parts of the cleaning fluid then enter the spiral groove 22 through the guide holes opened on the surface of the fixed sleeve 21 that are interconnected with the spiral groove 22.

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

[0069] In the converging section of the spiral groove 22, the cleaning liquid with spiral motion has a certain centrifugal force and axial flow rate. The centrifugal force can extrude the cleaning liquid to both sides of the camshaft, and the axial flow rate can flush the cleaning liquid along the axial direction of the camshaft. The double effects can effectively remove the dirt on both sides of the camshaft. For example, the cleaning liquid with spiral motion can strip and remove the oil stains and metal debris attached to the surface of the camshaft.

[0070] In this process, the strut 23 provides elastic support for the camshaft. When the cleaning liquid washes the camshaft and generates impact force, the strut 23 can elastically deform to buffer the impact force, so as to prevent the camshaft from being damaged by excessive impact. At the same time, the protrusions on the surface of the strut 23 can disturb the flow of the cleaning liquid during the cleaning process, and generate local turbulent flow. According to the diffusion theory of turbulent flow, the turbulent flow can enhance the mass exchange between the cleaning liquid and the surface of the camshaft, so that the dirt is more easily stripped from the surface of the camshaft. The existence of local turbulent flow causes the cleaning liquid to form small eddies near the strut 23. The eddies can reach the small recesses on the surface of the camshaft and remove the dirt, thereby further improving the cleaning effect.

[0071] When the cleaning process is completed, the ultrasonic source of the ultrasonic cleaner 11 is first stopped, and then the cleaning liquid circulation of the medium circulation unit is stopped. Subsequently, the cleaning tank 12 is taken out of the ultrasonic cleaner 11 through the feeding mechanism. The operator opens the secondary sleeve 212, and takes the cleaned camshaft out of the primary sleeve 211.

[0072] Please refer to FIGS. 1 and 2, Figure 9 and Figure 10 As shown in the embodiments, the ultrasonic cleaner 11 is internally provided with a dynamic swing assembly 3. The dynamic swing assembly 3 comprises a curved rail 31 symmetrically installed in the interior of the ultrasonic cleaner 11. A rotating shaft 32 is symmetrically and rotatably connected to the inner wall of the ultrasonic cleaner 11. A plurality of fixed curved leaves 33 are fixedly connected to the outer surface of the rotating shaft 32 in a ring shape at equal intervals. An external motor is installed on the side of the fixed curved leaves 33 away from the center of the ultrasonic cleaner 11 and penetrates the inner wall of the ultrasonic cleaner 11. A plurality of sliding curved leaves 34 are installed on the outer surface of the rotating shaft 32 in a ring shape at equal intervals.

[0073] Please refer to FIGS. 1 and 2, Figure 9 and Figure 10 As shown in the embodiments, the rotating shaft 32 is provided with a plurality of sliding grooves 35 arranged in a ring shape at equal intervals. The one end of the sliding curved leaf 34 close to the axis of the rotating shaft 32 extends inwardly and is slidingly connected to the inside of the sliding groove 35. The one end of each sliding curved leaf 34 away from the axis of the rotating shaft 32 is fixedly connected with a sliding column 36, and the sliding column 36 is slidingly connected to the inside of the curved rail 31.

[0074] It needs to be explained that the outer surface of the rotating shaft 32 is fixedly connected with a double-head rotating rod 37, and the double-head rotating rod 37 is installed with a plurality of inclined blocks with opposite directions on both sides.

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

[0076] When the rotating shaft 32 rotates, the fixed curved blade 33 moves in a circular motion. According to the principle of fluid mechanics, when the fixed curved blade 33 moves in the cleaning liquid, it will generate a shear force on the cleaning liquid. This shear force can break the laminar flow state in the cleaning liquid and promote the formation of turbulent flow. The formation of turbulent flow is conducive to the full contact of the cleaning liquid with the dirt on the surface of the camshaft, because the turbulent flow can increase the mixing degree of the cleaning liquid, so that the energy and chemicals in the cleaning liquid are more evenly distributed in the cleaning liquid, thereby improving the cleaning effect.

[0077] At the same time, when the rotating shaft 32 rotates, the sliding curved blade 34 reciprocates in the sliding groove 35 under the centrifugal force and the restriction of the slide rail 31 on the slide column 36. This movement mode makes the sliding curved blade 34 form a combined motion of rotation and sliding, i.e. dynamic rotary oscillation.

[0078] Specifically, the dynamic rotary oscillation of the sliding curved blade 34 can change the range and angle of stirring because it can slide while rotating. During the sliding process, the sliding curved blade 34 can be closer to the root of the camshaft, thereby bringing the cleaning liquid to areas that are difficult to reach by traditional cleaning methods, such as the connection between the root of the camshaft and the fixed sleeve 21, where dirt tends to accumulate. The sliding curved blade 34 of the dynamic rotary oscillation can deliver cleaning liquid to this area in different directions and intensities, effectively removing dirt.

[0079] The combined motion of the sliding curved blade 34 produces a more complex flow field in the cleaning liquid. Compared with a simple flow field, the flow field generated by the dynamic rotary oscillation has more vortex and turbulent regions. These vortex and turbulent regions can increase the collision frequency and energy exchange between the cleaning liquid and the surface of the camshaft. According to the principle of energy transfer, the more frequent the energy exchange between the cleaning liquid and the surface of the camshaft, the greater the possibility of dirt detaching from the surface of the camshaft. Moreover, the complex flow field can form more directional scouring forces on the surface of the camshaft, effectively cleaning the surface of the camshaft with different shapes and angles.

[0080] Finally, when the rotating shaft 32 rotates, the double-head rotating rod 37 rotates with it, and the inclined blocks on the double-head rotating rod 37 produce a special effect on the cleaning liquid during rotation.

[0081] Because the directions of the two inclined blocks on both sides of the double-head rotating rod 37 are opposite, the inclined blocks will generate different directions of thrust on the cleaning liquid during the rotation, and the different directions of thrust will form a complex pressure distribution in the cleaning liquid. According to the pressure-velocity relationship in fluid mechanics, the cleaning liquid will generate different flow rates and flow directions in different pressure areas, and the complex pressure distribution and flow field change further enhance the mixing degree of the cleaning liquid, so that the energy distribution of the cleaning liquid is more uniform.

[0082] Specifically, the cleaning liquid near the double-head rotating rod 37 will form local vortexes and backflows under the action of the inclined blocks, and these vortexes and backflows can gather the dirt particles in the cleaning liquid together, so as to facilitate the cleaning liquid to carry them away. At the same time, the complex flow field is also helpful to deliver the cleaning liquid to each part of the camshaft, especially some parts with complex shape and easy to hide dirt, such as the transition area between the cam part of the camshaft and the shaft body.

[0083] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0084] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic cleaning device for camshafts, comprising an ultrasonic cleaning machine (11) and a plurality of cleaning tanks (12), characterized in that: Each of the cleaning tank (12) is provided with a inclined cleaning assembly (2), the inclined cleaning assembly (2) comprises several fixed sleeve (21) and several spiral groove (22), the fixed sleeve (21) and spiral groove (22) are inclined; every two fixed sleeve (21) is set as a group, each group of fixed sleeve (21) is mirror image symmetry, and the cleaning tank (12) is provided with several groups of fixed sleeve (21), the fixed sleeve (21) provides inclined support force by itself, so that the camshaft is no longer attached to the edge of the cleaning tank (12), and the problem of cleaning dead angle in the gap of the camshaft is further improved; the spiral groove (22) is formed in the inside of the fixed sleeve (21), and the radius of the end of the spiral groove (22) away from the side wall of the cleaning tank (12) gradually decreases, the spiral groove (22) is guided by itself to make the cleaning liquid move spirally, and the two sides of the camshaft are cleaned; the ultrasonic source is installed in the ultrasonic cleaner (11), and the ultrasonic source is arranged on the inner wall of the ultrasonic cleaner (11); The fixed sleeve (21) is fixedly connected with a fairing (24) away from the cleaning tank (12), the fairing (24) is gradually expanded away from the fixed sleeve (21), the inside of each fixed sleeve (21) is provided with a support column (23), the outer surface of the fixed sleeve (21) is provided with a fixed ring, and the end of the fixed ring away from the fixed sleeve (21) is fixedly connected to the outer surface of the cleaning tank (12); The support column (23) is made of elastic material, a plurality of convex points are fixedly connected to the side of the support column (23) close to the inside of the fixed sleeve (21) in annular equidistant arrangement, and a plurality of connecting ribs (25) are fixedly connected between the support column (23) and the fairing (24); The inside of the ultrasonic cleaner (11) is provided with a dynamic swing assembly (3), the dynamic swing assembly (3) comprises a curved rail (31) symmetrically installed in the inside of the ultrasonic cleaner (11), the inner wall of the ultrasonic cleaner (11) is symmetrically connected with a rotating shaft (32), a plurality of fixed curved leaves (33) are fixedly connected to the outer surface of the rotating shaft (32) in annular equidistant arrangement, an external motor is installed on the side of the fixed curved leaf (33) away from the center of the ultrasonic cleaner (11) and penetrating the inner wall of the ultrasonic cleaner (11), and a plurality of sliding curved leaves (34) are installed on the outer surface of the rotating shaft (32) in annular equidistant arrangement; The rotating shaft (32) is provided with a plurality of sliding grooves (35) in annular equidistant arrangement, and the end of the sliding curved leaf (34) close to the shaft center of the rotating shaft (32) extends inwardly and is slidingly connected to the inside of the sliding groove (35).

2. 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 in communication with the spiral groove (22).

3. The ultrasonic cleaning device for a camshaft according to claim 2, characterized in that: The guide hole is arranged in a staggered manner with the connecting rib (25).

4. The ultrasonic cleaning device for a camshaft according to claim 1, characterized in that: The fixed sleeve (21) is designed in a split type, comprising a main sleeve (211) and a secondary sleeve (212), one end of the secondary sleeve (212) near the fairing (24) is rotatably connected to the top of the main sleeve (211), and the other end of the secondary sleeve (212) away from the fairing (24) is clamped to the outer surface of the main sleeve (211).

5. The ultrasonic cleaning device for a camshaft according to claim 1, characterized in that: Each of the sliding curved leaves (34) is fixedly connected with a slide column (36) at one end away from the shaft center of the rotating shaft (32), and the slide column (36) is slidably connected to the inside of the curved rail (31).

6. The ultrasonic cleaning device for a camshaft according to claim 1, characterized in that: The outer surface of the rotating shaft (32) is fixedly connected with a double-head rotating rod (37), and a plurality of inclined blocks with opposite directions are mounted on the two sides of the double-head rotating rod (37).

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