Automobile aluminum alloy die casting ultrasonic cleaning device

Abstract

The present application relates to the technical field of cleaning equipment, and specifically discloses an ultrasonic cleaning device for automobile aluminum alloy die castings; the device comprises a cleaning tank provided with ultrasonic transducers at the bottom and a cleaning rack for placing the die castings in multiple layers; the cleaning rack comprises a base, multiple supporting frames, multiple separators, multiple clamp assemblies and multiple driving mechanisms; the base is fixed inside the cleaning tank; the multiple supporting frames can be vertically inserted and fitted in sequence and are integrally inserted and locked on the base; each supporting frame is correspondingly provided with a separator, a clamp assembly and a driving mechanism; the cleaning rack assembled in the cleaning device reduces secondary pollution, reduces the probability of scratches and abrasion of the die castings caused by hard particle pollutants, reduces the concentration of pollutants in the cleaning liquid, avoids and reduces surface damage or deformation of the die castings caused by vibration and collision, thereby ensuring the cleaning efficiency and effect and maintaining the quality of the die castings.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and specifically proposes an ultrasonic cleaning device for automotive aluminum alloy die-casting parts. Background Technology

[0002] After automotive aluminum alloy die castings are manufactured, if the die castings have high requirements for assembly accuracy and sealing, require subsequent surface treatment, or have obvious impurities on the surface, it is necessary to clean one or more impurities on the surface of the die castings, including release agents, machining debris, residual oil, oxide layers, etc., to ensure that the performance and quality of the die castings meet the requirements for use or subsequent processing.

[0003] Under current technology, ultrasonic cleaning is a common and efficient cleaning method for die castings. During cleaning, the die casting is placed in a cleaning tank and cleaned by the cavitation effect generated by ultrasonic waves. Although the cleaning is efficient and thorough, it still has the following shortcomings.

[0004] 1. During the cleaning process, contaminants removed from the surface of the die-cast parts by ultrasonic cleaning enter the cleaning solution. Solid contaminants mainly settle to the bottom of the cleaning tank by gravity, but they are also disturbed by the ultrasonic waves, resulting in a longer settling time and prolonged suspension in the cleaning solution. This causes the following problems: First, contaminants can easily re-adhere to the cleaned die-cast parts, causing secondary contamination. Second, hard particulate contaminants may cause scratches and wear on the surface of the die-cast parts under the impact of ultrasonic waves, which will significantly affect the quality of parts with high requirements for assembly and sealing precision. Third, excessive contaminants suspended in the cleaning solution for a long time will increase the contaminant concentration in the cleaning area, reducing the cleaning effect and efficiency.

[0005] 2. Die-cast parts are generally placed in a cleaning frame in a single layer. The cleaning frame has limited space. When the overall height of the die-cast parts is low, the number of parts to be cleaned in batches is small, which will significantly reduce the space utilization rate in the cleaning tank.

[0006] 3. When multiple die-cast parts are placed together in the cleaning frame, they are usually not effectively isolated and constrained. Ultrasonic vibration will cause the die-cast parts to vibrate, increasing the probability of collisions between the die-cast parts and the cleaning frame, as well as between the die-cast parts themselves. Collisions can easily cause surface damage or deformation of aluminum alloy die-cast parts. This is especially true for die-cast parts with high surface precision requirements. Unnecessary damage caused during ultrasonic cleaning should be avoided. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides an ultrasonic cleaning device for automotive aluminum alloy die-cast parts, which solves the problems mentioned in the background section.

[0008] To achieve the above objectives, the present invention employs the following technical solution: an ultrasonic cleaning device for automotive aluminum alloy die-casting parts, comprising a cleaning tank with ultrasonic transducers mounted at the bottom and a cleaning rack for placing multiple layers of die-casting parts; the cleaning rack includes a base, multiple support frames, multiple partitions, multiple clamp assemblies, and multiple drive mechanisms; the base is fixed inside the cleaning tank;

[0009] Multiple support frames can be vertically inserted and locked together on the base. Each support frame has two vertically distributed collection layers, through which the cleaning fluid can pass. The two collection layers are staggered horizontally to collect contaminants. Multiple separators are assembled one-to-one on the upper end of the support frames, dividing them into multiple placement areas for independently placing die-cast parts. Multiple clamping assemblies are assembled one-to-one with the separators. Multiple drive mechanisms are assembled one-to-one on the support frames, and each drive mechanism is connected to a clamping assembly on the same support frame. When the drive mechanism is activated, the clamping assemblies simultaneously clamp the die-cast parts in the multiple placement areas, and both the separators and the clamping assemblies provide non-rigid clamping contact with the die-cast parts.

[0010] Preferably, the support frame includes a plug-in frame, which can be vertically plugged into the plug-in frame of another support frame or vertically plugged into the base; multiple support beams for jointly supporting and placing the die-cast parts are detachably installed inside the plug-in frame, and the multiple support beams are horizontally and linearly distributed; a partition is detachably installed inside the plug-in frame below the multiple support beams, and the partition and the multiple support beams form two collection layers.

[0011] Preferably, the supporting beam is provided with a conduit for collecting pollutants, and the conduit is open at the upper end and both ends of the long side of the supporting beam; the partition includes a window plate with a rectangular window, and multiple semi-circular grooves for collecting pollutants are fixed in the window of the window plate, with the groove openings of the semi-circular grooves facing upwards, and the multiple semi-circular grooves and multiple supporting beams are evenly distributed in the horizontal direction.

[0012] Preferably, the plug-in frame includes four corner columns and four frame beams; the four corner columns and four frame beams are connected and fixed in series to form a rectangular frame structure; the upper and lower ends of the corner columns are set in a plug-in fit structure; multiple supporting beams are detachably fixed between two opposite frame beams; and partitions are fixed on the four frame beams.

[0013] Preferably, the separator includes a cross-shaped spacer fixed to the upper end of the four frame beams, which divides the support frame into four placement areas.

[0014] Preferably, the clamp assembly includes four side clamping assemblies distributed one-to-one in the four placement areas; the drive mechanism includes four reset drive components mounted one-to-one on the four corner columns and a drive frame fixed between the four reset drive components, the four reset drive components are connected one-to-one with the four side clamping assemblies, and the drive frame is arranged in a lifting position; when the drive frame descends, it drives the reset drive components to drive the side clamping assemblies and clamps the die-casting part in the placement area.

[0015] Preferably, the cross-shaped spacer includes four spacer plates that separate the four placement areas; a connecting slide plate is fixed between adjacent side clamping assemblies, and the connecting slide plate is slidably disposed along the long side of the spacer plate between two side clamping assemblies.

[0016] Preferably, the side clamp assembly includes a side clamp and two telescopic guide plates; the side clamp has a right-angle structure, and the two telescopic guide plates are slidably arranged along the two right-angle sides of the side clamp; a series sliding plate is fixedly connected between the telescopic guide plates in adjacent positions of two adjacent side clamp assemblies.

[0017] Preferably, the corner column has a notch guide groove extending downward from the top; the reset drive includes a slider hinge seat that is slidably installed in the notch guide groove; a reset spring is vertically connected between the slider hinge seat and the corner column; a connecting rod is hinged on the slider hinge seat, and the other end of the connecting rod is hinged to the side clamp of the corresponding side clamp assembly; the drive frame is horizontally fixed at the top of the four slider hinge seats.

[0018] Preferably, each partition plate is vertically and rotatably mounted with multiple brush rollers, and the multiple brush rollers are distributed along the long side of the partition plate; side clamp brushes are fixed along the right-angle side on the side wall of the side clamp facing the placement area; both the side clamp brushes and the brush rollers are flexibly clamped and in contact with the die-cast part.

[0019] The above technical solution has the following advantages or beneficial effects: This invention provides an ultrasonic cleaning device for automotive aluminum alloy die-castings. The cleaning frame is equipped with a multi-module structure consisting of a base and multiple support frames that are sequentially inserted and stacked and can be locked together. While ensuring the integrity and stability of the cleaning frame, it facilitates the layer-by-layer placement and unloading of die-castings, and improves the space utilization rate and single-batch cleaning volume in the cleaning tank. The support frames are equipped with complementary double-layer collection structures for jointly collecting contaminants. The support frames can promptly intercept and collect contaminants that are removed during cleaning on the die-castings, enabling layer-by-layer collection of contaminants. It also facilitates the simultaneous removal of collected contaminants during unloading, changing the existing ultrasonic cleaning device's reliance on gravity-based concentrated sedimentation for contaminant collection. This reduces secondary pollution, lowers the probability of hard particulate contaminants causing scratches and wear on the die-casting surface, and reduces the concentration of contaminants in the cleaning fluid, thereby ensuring cleaning efficiency and effect, and maintaining the quality of the die-castings.

[0020] Each support frame is integrated with cooperating separators, clamp assemblies, and drive mechanisms, which can separate and place multiple die-cast parts in different areas and clamp them synchronously. This improves the stability of the die-cast parts during ultrasonic cleaning and avoids significant vibration and collision between the die-cast parts and the support frame, as well as between the die-cast parts themselves, caused by ultrasonic vibration. This helps to avoid and reduce surface damage or deformation caused by vibration and collision, thus maintaining the quality of the die-cast parts after cleaning. Attached Figure Description

[0021] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings, which are not intentionally drawn to scale; the focus is on illustrating the spirit of the invention.

[0022] Figure 1 This is a 3D structural diagram of the cleaning rack.

[0023] Figure 2 This is a 3D structural diagram of the base.

[0024] Figure 3 It is a three-dimensional structural diagram of the separator, fixture assembly and drive mechanism assembled on the support frame.

[0025] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0026] Figure 5 It is a three-dimensional sectional view of the support frame.

[0027] Figure 6 This is a 3D structural diagram of the connector frame.

[0028] Figure 7 This is a 3D structural diagram of a corner pillar.

[0029] Figure 8 This is a three-dimensional structural diagram of the supporting beam.

[0030] Figure 9 This is a three-dimensional structural diagram of the partition.

[0031] Figure 10 It is a three-dimensional structural diagram of the fixture assembly and drive mechanism assembly.

[0032] Figure 11 This is a 3D structural diagram of the locking shaft.

[0033] In the diagram: 1. Base; 11. Base groove; 2. Support frame; 21. Corner post; 211. Connecting plate; 212. Slot; 213. Pin; 214. Notch guide groove; 22. Frame beam; 221. Insert protrusion; 23. Support beam; 231. Finishing groove; 232. Protrusion; 24. Partition; 241. Window panel; 242. Semicircular groove; 25. Foot strip; 3. Divider; 31. Cross partition; 311. 32. Guide hole; 4. Brush roller; 5. Fixture assembly; 6. Side clamp; 7. Side clamp plate; 8. Sliding bar; 9. Side clamp brush; 10. Telescopic guide plate; 11. Connecting slide plate; 12. Drive mechanism; 13. Reset drive component; 14. Slider hinge; 15. Reset spring; 16. Connecting rod; 17. Drive frame; 18. Screw sleeve; 19. Drive screw; 20. Locking shaft; 10. Screw section; 21. Pressing part. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] An ultrasonic cleaning device for automotive aluminum alloy die-cast parts includes a rectangular cleaning tank. Multiple ultrasonic transducers arranged in a rectangular distribution are mounted on the bottom plate of the tank. The ultrasonic transducers are electrically connected to an ultrasonic generator. The ultrasonic generator converts the input ordinary 50 / 60Hz power frequency electrical signal into a high-frequency AC signal exceeding 20kHz. The ultrasonic transducers receive the high-frequency AC signal and generate high-frequency vibrations. It should be noted that the ultrasonic transducer used in this embodiment is an integrated transducer with a transducer and an amplitude transformer. The transducer in the ultrasonic transducer converts the high-frequency AC signal into a small-amplitude mechanical vibration through the inverse piezoelectric effect. After amplification by the amplitude transformer, a larger-amplitude mechanical vibration is formed. Furthermore, for higher efficiency, the frequency of the electrical signal output by the ultrasonic generator needs to be adjusted to match the inherent resonant frequency of the selected ultrasonic transducer. The vibration output end of the ultrasonic transducer is welded to the bottom plate of the tank. The bottom plate is a flexible material that acts as a vibration radiation membrane, generating ultrasonic waves in the cleaning fluid and utilizing the resulting cavitation effect to achieve ultrasonic cleaning. It should be noted that the cleaning tank is a common tank structure in existing ultrasonic cleaning devices and is not shown in the attached drawings.

[0037] like Figure 1As shown, the cleaning tank is equipped with cleaning racks for placing multiple layers of die-cast parts; it should be noted that the number of cleaning racks is one or more, depending on the size of the cleaning tank, and multiple cleaning racks can be arranged along the long side of the larger cleaning tank.

[0038] like Figure 1 As shown, the cleaning rack includes a base 1, which has a square frame structure. A mounting bracket is welded to the inner wall of the cleaning tank, and the base 1 is fixed to the mounting bracket with bolts. The base 1 is positioned close to the bottom plate of the tank. Multiple vertically inserted support frames 2 are inserted into the base 1. It should be noted that the height of a single support frame 2 is limited, suitable only for placing automotive aluminum alloy die-cast parts within a certain height range. Furthermore, the depth of the cleaning tank determines the stackable height of multiple support frames 2. To avoid significant attenuation of ultrasonic waves propagating upwards from the bottom of the cleaning tank, which would affect the cleaning effect on the die-cast parts placed in the uppermost support frame 2, and to enable the cleaning of as many die-cast parts as possible in the same batch, a reasonable depth of the cleaning tank can be designed after comprehensive analysis, and a corresponding number of support frames 2 can be placed on the base 1. In this embodiment, the number of support frames 2 is specifically three.

[0039] like Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the supporting frame 2 includes a plug-in frame; the plug-in frame includes four corner columns 21 and four frame beams 22; the four corner columns 21 and the four frame beams 22 are connected in series and form a square frame structure; the corner column 21 is a square column structure, and a square slot 212 is provided in the center of the top of the corner column 21, and the bottom of the corner column 21 is provided with a plug 213 that is inserted into the slot 212; a set of connecting plates 211 that are assembled with the frame beams 22 are welded on the two adjacent side walls of the corner column 21. There are two connecting plates 211 in a set, which are distributed vertically, and the lower plate surface of the lower connecting plate 211 is flush with the lower end surface of the corner column 21. The frame beams 22 are inserted between the two connecting plates 211 and are fixed and locked by bolts.

[0040] like Figure 1 , Figure 2 , Figure 7 and Figure 11As shown, multiple support frames 2 are used for placing die-cast parts in multiple layers. To ensure the stability of the multi-layer placement of die-cast parts and the overall stability of the cleaning rack, on the one hand, the four corner columns 21 on the base 1 corresponding to the support frames 2 are provided with base grooves 11. The base grooves 11 are matched with the pins 213. The four corner columns 21 in the bottom support frame 2 are inserted into the corresponding base grooves 11 through the pins 213. On the other hand, the corner columns 21 are provided with through holes that are vertically through the center. The base 1 is provided with through holes that are vertically through each base groove 11. The base is provided with screw holes. When the pin 213 is inserted into the base groove 11, the through hole and the screw hole axis are coincident. Multiple support frames 2 are locked to the base 1 by four locking shafts 6. The four locking shafts 6 are installed on the four corner columns 21 of the support frame 2. The locking shafts 6 pass vertically through the through holes of multiple corner columns 21. The upper and lower ends of the locking shafts 6 are respectively provided with pressing parts 62 and screw sections 61. The screw sections 61 are threadedly installed in the screw holes of the lower base groove 11. The pressing parts 62 are pressed against the inner end face of the slot 212 of the uppermost corner column 21.

[0041] like Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, multiple support beams 23 are horizontally installed between two opposing frame beams 22, evenly distributed along a horizontal straight line. The outer surface of the support beams 23 is U-shaped, and a collection groove 231 for collecting contaminants is centrally located on the support beams 23. Here, the contaminants mainly refer to solid particulate impurities removed from the die-casting parts during cleaning. The collection groove 231 has a circular cross-section and is open at the upper end and both ends of the long side of the support beam 23. The upper opening width of the collection groove 231 is smaller than its diameter, forming a constricted structure. Multiple insertion protrusions 221, corresponding to the multiple support beams 23, are welded to the side walls of the two frame beams 22 that are assembled with the support beams 23. The insertion protrusions 221 are circular, and their radius is slightly smaller than the radius of the collection groove 231. The two frame beams 22 pass through the corresponding insertion protrusions 221. The support beam 23 is inserted into the port of the groove 231 on the support beam 23, and both ends of the support beam 23 are clamped between the two frame beams 22. When all the support beams 23 are installed uniformly, the upper end face of the support beam 23 needs to be adjusted to a horizontal state. It can be improved that the insertion protrusion 221 and the port of the groove 231 can be keyed to achieve the assembly and positioning of the support beam 23. A gap is left between adjacent support beams 23 to facilitate the propagation of ultrasonic waves with the cleaning fluid. Multiple support beams 23 together form a support surface for placing the die-casting part. In this embodiment, in order to avoid the bottom end of the die-casting part from having a large area of ​​contact with the support beam 23 and thus creating a cleaning dead corner, a row of protrusions 232 are distributed on both sides of the groove 231 on the upper end of the support beam 23. The single row of protrusions 232 is evenly distributed along the long side of the support beam 23, and point support is achieved through the protrusions 232 and the bottom end of the die-casting part.

[0042] During ultrasonic cleaning of die-cast parts, the detached contaminants will settle downwards under gravity. It should be noted that the contaminants are also affected by the upward impact of ultrasonic waves in the cleaning fluid. The movement trajectory of the contaminants in the cleaning fluid is random and complex, but due to gravity, they will eventually settle downwards. Figure 5 and Figure 9 As shown, multiple support beams 23 form the first collection layer. Some pollutants will be randomly collected in the closing groove 231 as they settle, while other pollutants will continue to settle downwards through the gaps between adjacent support beams 23. In order to further collect the pollutants that continue to settle downwards, a partition 24 is detachably installed in the insertion frame below the multiple support beams 23. The partition 24 includes a window plate 241 with a rectangular window. Multiple semi-circular grooves 24 for collecting pollutants are fixed in the window of the window plate 241. 2. The opening of the semicircular groove 242 is set upward. Multiple semicircular grooves 242 are evenly distributed along the distribution direction of multiple supporting beams 23. A gap is also reserved between two adjacent semicircular grooves 242 to facilitate the propagation of ultrasonic waves with the cleaning fluid. Multiple semicircular grooves 242 and multiple supporting beams 23 are evenly distributed in the horizontal direction. The semicircular groove 242 is located directly below the gap between two supporting beams 23. In order to ensure the effect of further collection of pollutants, the width of the semicircular groove 242 is greater than the width of the gap between two supporting beams 23. Since multiple support beams 23 are used to directly support the die-cast parts, in order to ensure overall strength, multiple pad strips 25 are installed on the partition plate 24. The multiple pad strips 25 are evenly distributed in the direction perpendicular to the long side of the support beams 23. The pad strips 25 are fixed to the window plate 241 by bolts. The pad strips 25 have arc-shaped support grooves relative to each support beam 23. The lower end of each support beam 23 is embedded in the corresponding support groove on the multiple pad strips 25.

[0043] The partition 24 forms a second collection layer for collecting contaminants, and together with the first collection layer, constitutes a double-layer collection structure. In the double-layer collection structure of the support frame 2, the alternating distribution of multiple support beams 23 and multiple semi-circular grooves 242 serves two purposes: first, it allows for gaps between adjacent support beams 23 and adjacent semi-circular grooves 242, enabling ultrasonic waves to propagate through these gaps using the cleaning fluid as a propagation medium, thus reducing the obstruction and reflection of ultrasonic waves; second, the two collection layers have a complementary effect in collecting contaminants by staggering their collection areas, improving the interception and collection effect. However, it should be noted that the flow of contaminants with the cleaning fluid is highly random, and inevitably some contaminants will enter the periphery of the entire support frame 2 area, and some contaminants will also pass through the gaps between the two collection layers with the cleaning fluid. In this invention, the contaminants not collected in time are not considered. The two collection layers in the support frame 2 can be used to collect contaminants from the die-cast parts nearby. The system collects contaminants, shortening the settling time and reducing the suspended amount of contaminants in the cleaning zone. For multiple support frames 2, although vertical multi-layer placement is used for cleaning, contaminants in the upper support frame 2 will pass through the lower support frame 2, making the die-cast parts at the bottom more susceptible to secondary contamination. However, multi-layer, step-by-step interception and collection significantly reduces the amount of contaminants that continue to move downwards and settle, effectively mitigating the impact of secondary contamination. Furthermore, after cleaning the same batch, the die-cast parts are lifted out of the cleaning tank along with the support frames 2, and the collected contaminants can be immediately removed, significantly reducing the pressure on the cleaning tank for settling and filtering contaminants. Overall, the cleaning process changes the existing ultrasonic cleaning device's reliance on gravity-based concentrated settling for contaminant collection, reducing secondary contamination, lowering the probability of hard particulate contaminants causing scratches and wear on the die-cast parts surface, and reducing the concentration of contaminants in the cleaning fluid. This ensures cleaning efficiency and effectiveness while maintaining the quality of the die-cast parts.

[0044] In addition, multiple support frames 2 enable multi-layer placement of die-cast parts, which can make full use of the space in the cleaning tank and increase the cleaning volume of die-cast parts during a single batch of cleaning.

[0045] like Figure 1 , Figure 3 and Figure 4As shown, to achieve zoned and isolated placement of multiple die-cast parts on each support frame 2, a separator 3 is installed at the upper end of each support frame 2. The separator 3 includes a cross-shaped spacer 31 with its center located at the center of the support frame 2. The cross spacer 31 includes four spacer plates, which are fixed to the four frame beams 22 one by one by bolts. The support frame 2 is divided into four placement areas for independently placing die-cast parts by the cross spacer 31. Multiple brush rollers 32 are vertically and rotatably mounted on each spacer plate, and the multiple brush rollers 32 are evenly distributed along the long side of the spacer plate. The brush roller 32 consists of a roller body and a brush body fitted on the roller body. The brush body consists of a rubber sleeve and nylon bristles fixed on the rubber sleeve. When the bristles are worn to the point of needing replacement, the entire brush body can be replaced. The four sets of brush rollers 32 can separate the four die-cast parts, avoiding collisions between them.

[0046] like Figure 3 and Figure 10 As shown, in order to further fix and restrict the separately placed die castings in the placement area and avoid vibration and collision between the die castings and the support beam 23, causing damage or deformation, each support frame 2 is also independently equipped with a clamp assembly 4 that cooperates with the separator 3 and a drive mechanism 5 for driving the clamp assembly 4 to clamp the die castings; by driving the clamp assembly 4 through the drive mechanism 5, the four die castings can be clamped relative to each other in the corresponding placement area at the same time.

[0047] like Figure 3 , Figure 4 and Figure 10 As shown, the clamp assembly 4 includes four side clamping assemblies distributed one-to-one in the four placement areas; the side clamping assemblies include side clamping parts 41 and two telescopic guide plates 42; the side clamping parts 41 include side clamping plates 411 with a right-angled plate structure, and sliding strips 412 are welded to the two right-angled sides located outside the inner corner of the side clamping plate 411, and the two telescopic guide plates 42 and the two sliding strips 412 are slidably engaged one-to-one; side clamping brushes 413 are fixedly distributed along the right-angled sides on the side wall of the side clamping plate 411 facing the placement area, and the side clamping brushes 413 include a rubber strip as a base and nylon bristles fixed on the rubber strip, and the rubber strip is detachably fixed to the side clamping plate 411 by screws. In two adjacent side clamp assemblies, the telescopic guide plates 42 located in adjacent positions are fixedly connected by bolts to a series sliding plate 43. The four partition plates of the cross spacer 31 are all horizontally provided with guide holes 311. The guide holes 311 extend along the long side of the partition plate. The series sliding plate 43 passes through the guide hole 311 of the partition plate between the two telescopic guide plates 42 connected to it, and slides along the guide hole 311.

[0048] like Figure 1 , Figure 3 , Figure 4 , Figure 7 and Figure 10As shown, the drive mechanism 5 includes four reset drive components 51, each corresponding to one of the four corner columns 21, and a drive frame 52 fixed between the four reset drive components 51. The four reset drive components 51 are connected to the four side clamping assemblies. A notch guide groove 214 extends downward from the top of the corner column 21. The reset drive component 51 includes a slider hinge seat 511 that is slidably installed in the notch guide groove 214. A reset spring 512 is vertically connected between the slider hinge seat 511 and the corner column 21. A connecting rod 513 is hinged to the slider hinge seat 511, and the other end of the connecting rod 513 is hinged to the top of the right-angle corner of the side clamping plate 411 of the corresponding side clamping assembly. The drive frame 52 is horizontally fixed to the top of the four slider hinge seats 511 by bolts. A threaded sleeve 53 is vertically welded to one of the partition plates, and a drive screw 54 is vertically rotatably mounted on the drive frame 52. The drive screw 54 is threadedly connected to the threaded sleeve 53.

[0049] Before batch cleaning of die-cast parts, each die-cast part needs to be placed frame by frame on multiple support frames 2 and then fixed and limited. Specifically, on a single support frame 2, four die-cast parts are placed into four placement areas in sequence. To ensure the consistency and reliability of the clamping state, the placement angle and posture of the four die-cast parts in the placement areas are kept as consistent as possible. Then, the drive screw 54 is rotated, causing the drive frame 52 to descend as a whole. The drive frame 52 drives the four slider hinge seats 511 to descend synchronously along the notch guide groove 214. The slider hinge seats 511, through the connecting rod 513, then drive the side clamp 41 to move closer to the center of the cross spacer 31. Since the slider hinge seats 511 are connected in series through the drive frame 52, the synchronicity of movement is maintained. The four side clamping components are connected by a series sliding plate 43, further maintaining the synchronicity of movement. This allows the four side clamps 41 to move synchronously. The telescopic guide plate 42 also moves closer to the center of the cross spacer 31 along the guide hole 311. The side clamps 41 and the telescopic guide plate 42 slide relative to each other, thereby clamping the die-casting part between the side clamps 41 and the two sets of brush rollers 32, completing the limiting and fixing. In addition, both the brush rollers 32 and the side clamps 41 maintain flexible clamping contact with the die-casting part through the brush bristles. The die-casting part retains a certain range of freedom of movement. During ultrasonic cleaning, the die-casting part can make small random swaying movements within a horizontal range, providing a buffering effect. The brush bristles can also assist in brushing the contact areas of the die-casting part. The integrated and rapid clamping of multiple die-casting parts reduces or avoids damage to the surface of the die-casting parts caused by vibration and collision during cleaning. On the other hand, it prevents the die-casting parts from slipping due to improper operation when transferring the support frame 2.

[0050] After completing the placement and fixing of the die-cast part of the first support frame 2, insert the support frame 2 into the base 1. Then, repeat the operation to complete the placement of each frame and insert and stack multiple support frames 2 in sequence. Finally, lock and fix the multiple support frames 2 onto the base 1 as a whole by locking the locking shaft 6.

[0051] During cleaning, ultrasonic waves generate countless tiny bubbles through cavitation effect and impact the surface of the die-cast part, causing surface contaminants to peel off. Multiple support frames 2 simultaneously collect the peeled contaminants layer by layer.

[0052] After cleaning, loosen the locking shaft 6 and remove the multiple support frames 2 from the cleaning tank one by one from top to bottom. Remove the die-cast parts and clean the collected contaminants.

[0053] It should be added that the cleaning rack provided by the present invention is particularly suitable for the following types of automotive aluminum alloy die-cast parts.

[0054] The first type of die-cast parts require high assembly and sealing precision, and it is necessary to avoid damage to the surface of the die-cast parts due to vibration and collision during ultrasonic cleaning; therefore, it is suitable for multi-part partitioning and fixed positioning.

[0055] The second type involves die-cast parts with complex surface features, including multiple curved surfaces, grooves, and holes. These require static (non-flowing) cleaning and a longer cleaning time to avoid incomplete cleaning in certain areas.

[0056] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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 this invention.

[0057] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" 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 connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a manner common to the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of the present invention, or equivalent embodiments with equivalent changes, do not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An ultrasonic cleaning device for automotive aluminum alloy die-cast parts, comprising a cleaning tank with ultrasonic transducers mounted at the bottom and a cleaning rack for placing multiple layers of die-cast parts; characterized in that, The cleaning rack includes: The base is fixed inside the cleaning tank; Multiple support frames can be vertically inserted and locked together on the base; the support frame is equipped with two vertically distributed collection layers, through which the cleaning fluid can pass, and the two collection layers are staggered in the horizontal direction to collect contaminants. Multiple separators are assembled one-to-one on the upper end of multiple support frames; the separators divide the support frames into multiple placement areas for independently placing die-cast parts; Multiple fixture assemblies are assembled in a one-to-one correspondence with multiple partition components; And multiple drive mechanisms are assembled one by one on multiple support frames, and the drive mechanism is connected to the fixture assembly on the same support frame; when the drive mechanism is driven, the fixture assembly clamps the die castings in multiple placement areas simultaneously, and the separator and the fixture assembly have non-rigid clamping contact with the die castings. The support frame includes a plug-in frame, in which multiple support beams for jointly supporting and placing die-cast parts are detachably installed. A partition is detachably installed below the multiple support beams in the plug-in frame, and the partition and the multiple support beams form two collection layers. The supporting beam has a groove for collecting pollutants, and the partition includes a window plate with a rectangular window. Multiple semi-circular grooves for collecting pollutants are fixed in the window of the window plate, and the openings of the semi-circular grooves are set upwards.

2. The ultrasonic cleaning device for automotive aluminum alloy die-casting parts according to claim 1, characterized in that: The support frame can be vertically inserted into the insertion frame of another support frame or vertically inserted into the base through the insertion frame; multiple support beams are distributed horizontally in a straight line.

3. The ultrasonic cleaning device for automotive aluminum alloy die-casting parts according to claim 2, characterized in that: The converging groove is open at the top of the supporting beam and at both ends of the long side; multiple semi-circular grooves and multiple supporting beams are evenly distributed in the horizontal direction.

4. The ultrasonic cleaning device for automotive aluminum alloy die-casting parts according to claim 2, characterized in that: The plug-in frame includes four corner columns and four frame beams; the four corner columns and four frame beams are connected and fixed in series to form a rectangular frame structure; the upper and lower ends of the corner columns are set in a plug-in fit structure; multiple supporting beams are detachably fixed between two opposite frame beams; partitions are fixed on the four frame beams.

5. The ultrasonic cleaning device for automotive aluminum alloy die-casting parts according to claim 4, characterized in that: The separator includes a cross-shaped spacer, which is fixed to the upper end of the four frame beams and divides the support frame into four placement areas.

6. The ultrasonic cleaning device for automotive aluminum alloy die-casting parts according to claim 5, characterized in that: The clamp assembly includes four side clamping components distributed one-to-one in the four placement areas; the drive mechanism includes four reset drive components mounted one-to-one on the four corner columns and a drive frame fixed between the four reset drive components. The four reset drive components are connected one-to-one with the four side clamping components, and the drive frame is set to rise and fall. When the drive frame descends, it drives the reset drive components to drive the side clamping components and clamp the die-casting part in the placement area.

7. The ultrasonic cleaning device for automotive aluminum alloy die-casting parts according to claim 6, characterized in that: The cross-shaped spacer includes four spacer plates that separate the four placement areas; a connecting slide plate is fixed between adjacent side clamping assemblies, and the connecting slide plate is slidably arranged along the long side of the spacer plate between two side clamping assemblies.

8. The ultrasonic cleaning device for automotive aluminum alloy die-casting parts according to claim 7, characterized in that: The side clamp assembly includes a side clamp and two telescopic guide plates; the side clamp has a right-angle structure, and the two telescopic guide plates are slidably arranged along the two right-angle sides of the side clamp; a series sliding plate is fixedly connected between the telescopic guide plates in adjacent positions of two adjacent side clamp assemblies.

9. An ultrasonic cleaning device for automotive aluminum alloy die-casting parts according to claim 8, characterized in that: The corner column has a notch guide groove extending downward from the top; the reset drive includes a slider hinge seat that is slidably installed in the notch guide groove; a reset spring is vertically connected between the slider hinge seat and the corner column; a connecting rod is hinged on the slider hinge seat, and the other end of the connecting rod is hinged to the side clamp of the corresponding side clamp assembly; the drive frame is horizontally fixed at the top of the four slider hinge seats.

10. An ultrasonic cleaning device for automotive aluminum alloy die-casting parts according to claim 8, characterized in that: Multiple brush rollers are vertically and rotatably mounted on each partition plate, and the multiple brush rollers are distributed along the long side of the partition plate; side clamp brushes are fixed along the right-angle side on the side wall of the side clamp facing the placement area; both the side clamp brushes and brush rollers are in flexible clamping contact with the die-cast part.

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