An automatic clamping fixture for cleaning special-shaped automotive aluminum castings

Abstract

The present invention discloses an automatic clamping fixture for cleaning special-shaped automotive aluminum castings, which includes a bearing platform on the machine tool for supporting the automotive aluminum castings and multiple groups of spray nozzles arranged thereon. The bearing platform is provided with a circumferential structure that adapts to the shape of the aluminum casting and clamps and cleans the aluminum casting. The circumferential structure includes two groups of sub-clamping components arranged symmetrically with respect to the central axis of the bearing platform on the bearing platform. The sub-clamping component includes a transverse seat that moves freely in the horizontal direction. The same-position plate includes an integrally formed outer extension part, and multiple groups of arc pressure components for contacting the outer surface of the aluminum casting are arranged on the outer extension part. By setting the circumferential structure, the present invention can flexibly adapt to aluminum castings of different sizes and shapes, thereby achieving stable multi-point clamping, ensuring the stability and reliability during the clamping process. Regardless of how the surface shape of the aluminum casting changes, it can effectively improve the clamping efficiency, reduce the problem of unstable fixation caused by shape differences, and thus significantly improve the cleaning effect.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum casting fixtures, and specifically to an automatic clamping fixture for cleaning special-shaped automotive aluminum castings. Background Art

[0002] In the modern automotive manufacturing process, aluminum castings are widely used in the manufacturing of automotive engines, transmissions, chassis, and other key components due to their advantages such as light weight, high strength, and corrosion resistance. However, due to the inevitable generation of oil stains, metal chips, and other contaminants during the production process, the cleaning of aluminum castings has become an important link to ensure the quality and reliability of parts.

[0003] Chinese Patent (Publication No.: CN114523318B), this solution specifically includes an X-axis lead screw slide and a Y-axis lead screw slide. A support sleeve is fixedly installed on the moving plate of the Y-axis lead screw slide. By designing a "cross" structure composed of the Y-axis lead screw slide and the X-axis lead screw slide at the bottom of the support sleeve, the present invention can drive the fixture to move on the X and Y axes, and cooperate with the transmission component, rotation component, clamping component, and angle adjustment component, effectively solving the problem that the current fixture for machining chassis bracket aluminum castings cannot change the position, clamping angle, and clamping height between the fixed end of the clamp in the chassis bracket aluminum casting fixture and the part according to the different sizes, shapes, and bending degrees of the flanges of the chassis bracket aluminum casting, realizing that the jaws on the fixture can accurately clamp different aluminum castings to meet different processing requirements.

[0004] During the use of the aluminum casting fixture in the above patent, due to the large differences in the sizes of different aluminum castings, it is difficult to adaptively achieve effective clamping of aluminum castings of different sizes. In addition, the shapes of aluminum castings are usually relatively complex, and there may be significant size differences between different parts of the same aluminum casting, making it difficult to ensure sufficient fitting between multiple clamping points and the aluminum casting, thus affecting the stability and reliability of clamping. At the same time, the cleaning process of aluminum castings may involve cleaning the formed holes, and due to the deviation of the fixed position of the aluminum casting, it may lead to incomplete cleaning and affect the cleaning effect. To solve the above problems, an automatic clamping fixture for cleaning special-shaped automotive aluminum castings is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic clamping fixture for cleaning special-shaped automotive aluminum castings, which has the advantage of being able to flexibly adapt to aluminum castings of different sizes and shapes, and solves the problem that it is difficult to ensure sufficient fitting between multiple clamping points and the aluminum casting, thus affecting the clamping stability and reliability.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic clamping fixture for cleaning special-shaped automobile aluminum castings, comprising a support platform on a machine tool for supporting automobile aluminum castings and a plurality of nozzles arranged thereon, wherein the support platform is provided with a surrounding structure that adapts to the shape of the aluminum casting and clamps and cleans the aluminum castings;

[0007] The circumferential structure includes two groups of clamping components arranged on the support platform and symmetrically arranged with respect to the central axis of the support platform, the clamping components include a horizontal seat that can move freely in the horizontal direction, the horizontal seat is provided with a corresponding plate that can move horizontally synchronously with the horizontal seat, the corresponding plate includes an integrally formed extension, and the extension is provided with a plurality of groups of arc pressure components for contacting with the outer surface of the aluminum casting;

[0008] The arc pressure components in the two groups of the clamping components are arranged opposite to each other and clamp the aluminum casting together. A rectangular groove for the support platform to pass through is opened on the extension part. The extension part is also provided with multiple groups of fixed punching components for adjusting the direction of a single group of nozzles.

[0009] The horizontal seat is also provided with a cleaning component for washing the aluminum casting after the two-component clamping component fixes the aluminum casting;

[0010] The arc pressure assembly comprises a U-shaped clamp seat fixed with bolts between the extension part, a main arc seat is fixedly rotated on the U-shaped clamp seat, and a plurality of micro-clamp blocks which are in compression contact with the outer surface of the aluminum casting are arranged on the main arc seat.

[0011] Preferably, the main arc seat has two groups of secondary arc seats that rotate on an axis away from one end face of the U-shaped clamp seat, each group of secondary arc seats has multiple groups of graded arc seats that rotate on an axis on a straight line surface, and multiple groups of micro-level clamps rotate on an axis on each group of graded arc seats away from the secondary arc seat.

[0012] Preferably, the clamping assembly further comprises a threaded rod driven by a motor and freely rotating in a vertical direction, the threaded rod is fixedly rotated on the support platform, an internal threaded barrel is threadedly connected to the threaded rod, the horizontal seat is fixedly rotated on the internal threaded barrel, and a clamping assembly is provided on the horizontal seat to limit the synchronous rotation of the internal threaded barrel and the threaded rod;

[0013] The transverse seat is provided with a transverse sliding groove for sliding connection of the corresponding plate.

[0014] Preferably, the clamping assembly includes a clamping plate arranged on the horizontal seat, and the horizontal seat is provided with a receiving groove for sliding connection of the clamping plate, and a plurality of sets of yielding springs are arranged in the receiving groove, and the two ends of the yielding springs are respectively fixedly connected to the clamping plate and the horizontal seat, and the internal threaded cylinder is provided with a clamping groove used in conjunction with the clamping plate;

[0015] A positioning pin is fixedly connected to one side of the clamping plate facing the same position plate, and a V-shaped positioning groove for the positioning pin to be slidably connected is provided on the same position plate.

[0016] Preferably, the fixed flushing assembly includes an extension rod disposed on the extension portion, and a first groove for the horizontal sliding of the extension rod is formed on the extension portion. A swinging sphere is provided at one end of the extension rod away from the extension portion, and the swinging sphere is fixedly connected to the spray head.

[0017] A spherical cavity for the sliding connection of the swinging sphere is formed on the extension rod, and a locking bolt is threadedly connected to the extension rod. The locking bolt is in abutting connection with the swinging sphere.

[0018] A lateral pipe is fixedly connected to the extension portion, and a plurality of flexible hoses are fixedly penetrated through the lateral pipe. Each group of flexible hoses is fixedly penetrated between the swinging spheres in a group of fixed flushing assemblies.

[0019] Preferably, the cleaning assembly includes a reflux cylinder fixedly connected to the horizontal seat. The liquid outlet end integrally formed with the reflux cylinder is in gas communication with the lateral pipe. A piston plate that reciprocates horizontally is provided in the reflux cylinder, and the outer peripheral surface of the piston plate is in sliding contact with the inner wall of the reflux cylinder.

[0020] Preferably, a bottom sealing box for receiving the cleaning liquid is fixedly connected below the bearing platform. A filter plate is fixedly connected to the inner wall of the bottom sealing box, and the bottom sealing box is in gas communication with the liquid inlet end integrally formed with the reflux cylinder.

[0021] A plurality of diversion holes arranged in an array are formed on the bearing platform, and all the plurality of diversion holes are communicated with the bottom sealing box.

[0022] Preferably, the cleaning assembly further includes a hollow cylinder sleeved on the threaded rod. The hollow cylinder is coaxially fixed on the inner threaded cylinder. A worm is fixedly sleeved on the hollow cylinder. The worm is meshed with a worm gear. The worm gear is rotatably fixed on the horizontal seat, and a shaft position disc is coaxially fixed on the worm gear.

[0023] A swing rod is rotatably fixed on the shaft position disc. One end of the piston plate facing the shaft position disc is fixedly connected with a connecting rod, and the end of the swing rod away from the shaft position disc is rotatably fixed on the connecting rod.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. By setting the corresponding structure, the present invention can flexibly adapt to aluminum castings of different sizes and shapes. The design of the multi-stage arc seats and micro-stage clamping blocks in the fixture allows it to perform adaptive adjustment on the surface of the aluminum casting, thereby achieving stable multi-point clamping, ensuring the stability and reliability during the clamping process. No matter how the surface shape of the aluminum casting changes, it can effectively improve the clamping efficiency, reduce the problem of unstable fixation caused by shape differences, and thus significantly improve the cleaning effect.

[0026] 2. The present invention can perform precise positioning and directional spraying according to the positions of the formed holes on the aluminum castings by setting a cleaning component. The design of the fixed-punch component ensures the stability of the orientation of the nozzle, avoids arbitrary changes in the position of the nozzle during the cleaning process, ensures comprehensive cleaning of complex aluminum castings, and can effectively reduce cleaning blind spots and dead angles, ensuring that every part of the aluminum casting can be thoroughly cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the bottom sealing components of the present invention;

[0029] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 This is a schematic diagram of the components where the collocation plate of the present invention is located;

[0031] Figure 5 This is a schematic diagram of the components where the shaft position disk of the present invention is located;

[0032] Figure 6 For the present invention Figure 4 Enlarged view of point B in the middle;

[0033] Figure 7 This is a schematic diagram of the components where the card board of the present invention is located;

[0034] Figure 8 This is a schematic diagram of the components where the extension rod of the present invention is located;

[0035] Figure 9 This is a schematic diagram of the components where the main arc seat of the present invention is located;

[0036] Figure 10 For the present invention Figure 9 Enlarged view of point C in the middle.

[0037] In the figure: 1, support platform; 2, bottom sealing box; 3, threaded rod; 4, internal threaded cylinder; 5, horizontal seat; 6, yield spring; 7, clamping plate; 8, clamping groove; 9, same position plate; 901, extension; 10, positioning pin; 11, V-shaped positioning groove; 12, hollow cylinder; 13, worm; 14, worm wheel; 15, axial disk; 16, rocker; 17, connecting rod; 18, piston plate; 19, reflux cylinder; 20, extension rod; 21, lateral pipeline; 22, swinging sphere; 23, nozzle; 24, hose; 25, U-shaped clamp seat; 26, primary arc seat; 27, secondary arc seat; 28, graded arc seat; 29, micro clamp block; 30, guide hole; 31, filter plate; 32, locking bolt. DETAILED DESCRIPTION

[0038] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figures 1 to 10 , the present invention provides a technical solution: an automatic clamping fixture for cleaning special-shaped automotive aluminum castings, including a bearing platform 1 on the machine tool for supporting the automotive aluminum casting and multiple groups of spray heads 23 arranged thereon. The bearing platform 1 is provided with a circumferential structure that adapts to the shape of the aluminum casting and clamps and cleans the aluminum casting.

[0040] The circumferential structure includes two groups of sub-clamping components arranged symmetrically about the central axis of the bearing platform 1. The sub-clamping component includes a horizontal seat 5 that moves freely in the horizontal direction. A co-position plate 9 that moves horizontally synchronously with it is provided on the horizontal seat 5. The co-position plate 9 includes an extended portion 901 formed integrally. Multiple groups of arc pressing components for contacting the outer surface of the aluminum casting are provided on the extended portion 901.

[0041] The arc pressing components in the two groups of sub-clamping components are arranged oppositely and jointly clamp and fix the aluminum casting. A rectangular groove for the bearing platform 1 to pass through is opened on the extended portion 901. Multiple groups of fixed spraying components for adjusting the orientation of a single spray head 23 are also provided on the extended portion 901.

[0042] A cleaning component for flushing the aluminum casting after the two groups of sub-clamping components fix the aluminum casting is also provided on the horizontal seat 5.

[0043] As shown in Figure 1 and Figure 2 , when cleaning the automotive aluminum casting, place the aluminum casting between the bearing platform 1 and multiple groups of oppositely arranged arc pressing components. By driving the circumferential component to operate, the two groups of sub-clamping components are synchronously driven, and the horizontal seats 5 in the two groups of sub-clamping components can move towards each other synchronously in the horizontal direction. Furthermore, the arc pressing components arranged on the extended portion 901 can be driven to move towards the aluminum casting until the arc pressing components complete the purpose of clamping the aluminum casting.

[0044] At the same time, since the shape and size of different types of aluminum castings are different, by setting two groups of sub-clamping components, after multiple groups of arc pressing components complete the purpose of clamping the aluminum casting, the horizontal position of its horizontal seat 5 will no longer continue to move horizontally. After the horizontal seat 5 stops moving, the cleaning component can be driven to operate to realize the cleaning process of the aluminum casting through the spray heads 23.

[0045] It should be noted that during actual use, according to the size of the aluminum casting to be cleaned, the distance between the arc pressure components on the same outer extension 901 can be adjusted to ensure effective fixation of the aluminum casting. At the same time, a backing plate for restricting the aluminum casting can be provided at one end of the bearing platform 1 away from the horizontal seat 5 to ensure that the holes formed on the aluminum casting are roughly in the same position after being fixed.

[0046] Moreover, during actual use, according to the different positions of the formed holes on the aluminum casting to be cleaned, the horizontal position of the nozzle 23 on the outer extension 901 can be freely adjusted, and the orientation of the nozzle 23 corresponding to the hole position can be adjusted in combination with the fixed punching component to avoid incomplete cleaning problems.

[0047] In one relatively preferred embodiment, the arc pressure component includes a U-shaped clamping seat 25 bolted to the outer extension 901. A main arc seat 26 is rotatably fixed on the U-shaped clamping seat 25. Two groups of secondary arc seats 27 are rotatably fixed at one end face of the main arc seat 26 away from the U-shaped clamping seat 25. A plurality of groups of grading arc seats 28 are rotatably fixed on the straight surface of each group of secondary arc seats 27. And a micro clamping block 29 is rotatably fixed on the straight surface of each group of grading arc seats 28 away from the secondary arc seat 27. The micro clamping block 29 is in pressing contact with the outer surface of the aluminum casting.

[0048] Such as Figure 1 、 Figure 2 、 Figure 9 and Figure 10 As shown, when the U-shaped clamping seat 25 moves horizontally along with the outer extension 901, the micro clamping block 29 provided thereon gradually approaches the surface of the aluminum casting and finally fits with the aluminum casting. At the same time, when the micro clamping blocks 29 of multiple groups of arc pressure components arranged oppositely are all in contact with the surface of the aluminum casting, the horizontal movement process of the U-shaped clamping seat 25 will drive the main arc seat 26 to rotate adaptively according to the shape difference at the corresponding position of the U-shaped clamping seat 25 to adapt to the shape difference in a larger area of the aluminum casting.

[0049] At the same time, the secondary arc seat 27 is rotatably arranged on the main arc seat 26. When the micro clamping block 29 is in contact with the surface of the aluminum casting, the shape difference in a smaller area of the aluminum casting can be adapted through the rotation process of the secondary arc seat 27. And a grading arc seat 28 is provided on each group of secondary arc seats 27. Through the free rotation of the grading arc seat 28, the shape difference of the aluminum casting in the small area corresponding to itself can be adapted. At the same time, the micro clamping block 29 is rotatably arranged on the grading arc seat 28, and rubber protrusions are provided on the straight surface of the micro clamping block 29. Furthermore, the micro clamping block 29 and the rubber protrusions thereon adapt to the minute shape difference at the set clamping point position of the aluminum casting. Taking the shape of the clamping point as a curve as an example, when fixing this clamping point, multiple groups of micro clamping blocks 29 can freely deflect according to the curve of the clamping point to ensure contact with the clamping point, thereby ensuring the stability of the aluminum casting.

[0050] Based on the embodiment of the arc voltage assembly, the clamping component includes a threaded rod 3 driven by a motor and freely rotatable in the vertical direction. The threaded rod 3 is rotationally fixed on the bearing block 1. An internally threaded cylinder 4 is threadedly connected to the threaded rod 3. A horizontal seat 5 is rotationally fixed on the internally threaded cylinder 4, and a clamping component for restricting the synchronous rotation of the internally threaded cylinder 4 and the threaded rod 3 is provided on the horizontal seat 5;

[0051] A horizontal sliding groove for the sliding connection of the same-position plate 9 is formed on the horizontal seat 5.

[0052] The clamping component includes a clamping plate 7 provided on the horizontal seat 5. A receiving groove for the sliding connection of the clamping plate 7 is formed on the horizontal seat 5. A plurality of sets of yielding springs 6 are provided in the receiving groove. The two ends of the yielding spring 6 are respectively fixedly connected to the clamping plate 7 and the horizontal seat 5. A clamping groove 8 for cooperation with the clamping plate 7 is formed on the internally threaded cylinder 4;

[0053] A positioning pin 10 is fixedly connected to one side of the clamping plate 7 facing the same-position plate 9. A V-shaped positioning groove 11 for the sliding connection of the positioning pin 10 is formed on the same-position plate 9.

[0054] As shown in Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 7 , the threaded rods 3 in the two clamping components are driven by a motor to rotate synchronously, so as to drive the horizontal seats 5 in the two clamping components to move synchronously towards or away from each other in the horizontal direction. At the same time, the same-position plate 9 is provided on the horizontal seat 5, and thus the same-position plate 9 can be driven to move horizontally synchronously with the horizontal seat 5. When the arc voltage assemblies on the outer extension part 901 complete the fixation of the aluminum casting, the outer extension part 901 cannot continue to move in the horizontal direction under the obstruction of the aluminum casting. At this time, when the threaded rod 3 continues to rotate, it can drive the horizontal seat 5 to continue to move a certain distance along the moving direction, so as to drive a relative displacement between the horizontal seat 5 and the same-position plate 9.

[0055] At the same time, the positioning pin 10 fixedly arranged on the clamping plate 7 is slidably connected to the same-position plate 9 through the V-shaped positioning groove 11. When a relative displacement occurs between the horizontal seat 5 and the same-position plate 9, the positioning pin 10 can slide on the V-shaped positioning groove 11 to drive the clamping plate 7 to move in the receiving groove and compress the yielding spring 6, so as to drive the yielding spring 6 to undergo compressive deformation and at the same time drive the clamping plate 7 to disengage from the clamping groove 8 formed on the internally threaded cylinder 4.

[0056] Among them, in the initial state, the isoplate 9 cannot rotate due to the restriction of the base 1, and the isoplate 9 is set on the transverse seat 5, and then when the clamping plate 7 is inserted into the slot 8, its internal threaded tube 4 cannot rotate synchronously with the threaded rod 3 due to the restriction of the clamping plate 7, and then the rotation process of the threaded rod 3 in the initial state will only change the horizontal position of the transverse seat 5 and the isoplate 9, but as the multiple sets of arc pressure components on the extension part 901 complete the fixing purpose of the aluminum casting, and then drive the clamping plate 7 out of the slot 8, the internal threaded tube 4 will no longer be restricted by the clamping plate 7, and the internal threaded tube 4 will rotate synchronously with the threaded rod 3, and the horizontal position of the transverse seat 5 and the isoplate 9 will not change.

[0057] On the basis of the embodiment of the split clamp assembly, the fixed punch assembly includes an extension rod 20 arranged on the extension part 901, and a groove body 1 for the extension rod 20 to slide horizontally is opened on the extension part 901, and a swing ball 22 is provided at one end of the extension rod 20 away from the extension part 901, and the swing ball 22 is fixedly connected to the nozzle 23;

[0058] The extension rod 20 is provided with a ball cavity for sliding connection of the swing ball 22, and a locking bolt 32 is threadedly connected to the extension rod 20, and the locking bolt 32 is in contact connection with the swing ball 22;

[0059] The extending portion 901 is fixedly connected with a lateral pipe 21 , and a plurality of groups of hoses 24 are fixedly passed through the lateral pipe 21 . Each group of hoses 24 is fixedly passed through a group of swinging balls 22 in a fixed impact assembly.

[0060] The cleaning assembly includes a reflux cylinder 19 fixedly connected to the horizontal seat 5, the liquid outlet end of the reflux cylinder 19 is integrally formed with the gas in communication with the lateral pipe 21, a piston plate 18 is provided in the reflux cylinder 19 which reciprocates in the horizontal direction, and the outer peripheral surface of the piston plate 18 is in sliding contact with the inner wall of the reflux cylinder 19.

[0061] The cleaning assembly also includes a hollow cylinder 12 sleeved on the threaded rod 3, the hollow cylinder 12 is coaxially fixed on the internal threaded cylinder 4, a worm 13 is fixedly sleeved on the hollow cylinder 12, the worm 13 is meshedly connected with a worm wheel 14, the worm wheel 14 is fixedly rotated on the horizontal seat 5, and an axial disk 15 is coaxially fixed on the worm wheel 14;

[0062] A swing rod 16 is fixedly rotatable on the axial disk 15 , a connecting rod 17 is fixedly connected to one end of the piston plate 18 facing the axial disk 15 , and an end of the swing rod 16 away from the axial disk 15 is fixedly rotatable on the connecting rod 17 .

[0063] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 8As shown, when the internal thread cylinder 4 rotates synchronously with the threaded rod 3, it can drive the hollow cylinder 12 arranged coaxially therewith to rotate synchronously, and drive the worm 13 fixedly arranged on the hollow cylinder 12 to rotate in the vertical direction. Among them, the worm 13 is meshed with a worm gear 14. Therefore, the rotation process of the internal thread cylinder 4 can drive the worm gear 14 and the axial position disk 15 arranged coaxially with the worm gear 14 to rotate synchronously in the horizontal direction.

[0064] Meanwhile, a return flow cylinder 19 is arranged on the horizontal seat 5, and a piston plate 18 is slidably arranged in the return flow cylinder 19. A connecting rod 17 is fixedly arranged on the piston plate 18, and a swing rod 16 that can swing freely is arranged between the connecting rod 17 and the axial position disk 15. Therefore, when the axial position disk 15 rotates continuously, it can drive the swing rod 16 to deflect reciprocally, and drive the piston plate 18 to make a reciprocating motion in the return flow cylinder 19 through the connecting rod 17.

[0065] Among them, when the piston plate 18 continuously makes a horizontal reciprocating motion in the return flow cylinder 19, it can repeatedly extract the cleaning liquid from the bottom sealing box 2 that is in gas communication with the return flow cylinder 19, and push the cleaning liquid to the lateral pipeline 21 through the liquid outlet end integrally formed with the return flow cylinder 19. At the same time, the spray head 23 is communicated with the lateral pipeline 21 through a hose 24. Therefore, the cleaning liquid finally sprays onto the aluminum casting through the spray head 23.

[0066] In the actual use process, a set of one-way valves are respectively arranged on the liquid inlet end and the liquid outlet end integrally formed with the return flow cylinder 19, and the valve ports of the two sets of one-way valves are opposite. Thus, the flow direction of the cleaning liquid is restricted by the two sets of one-way valves, so that when the piston plate 18 reciprocates in the return flow cylinder 19, the cleaning liquid can be transported from the bottom sealing box 2 to the return flow cylinder 19, and finally the cleaning liquid is sprayed out from the spray head 23.

[0067] It should be noted that in the actual use process, due to the different positions of the formed holes on different aluminum castings, the horizontal position of the extension rod 20 on the outer extension part 901 is changed to dynamically adjust the position of the spray head 23, so that it can correspond to the formed holes on the aluminum casting to ensure the cleaning effect of the aluminum casting. At the same time, the orientation of the spray head 23 is changed by rotating the swing sphere 22, and the locking bolt 32 is driven to squeeze and contact the swing sphere 22 by rotating the locking bolt 32, so as to avoid any change in the position of the spray head 23. Therefore, the spray head 23 can be driven to accurately face the dead corner area that is difficult to clean in the aluminum casting to further improve the cleaning effect.

[0068] Moreover, after a single cleaning operation is completed, the used cleaning liquid and the sundries such as metal chips and oxide skins carried therein flow downward to the bottom sealing box 2 through the diversion hole 30, and the filter plate 31 arranged in the bottom sealing box 2 intercepts the fixed sundries. Among them, the bottom sealing box 2 is communicated with the return flow cylinder 19, thus realizing the multiple utilization of the cleaning.

[0069] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic clamping fixture for cleaning special-shaped automotive aluminum castings, comprising a machine tool table (1) for supporting automotive aluminum castings and a plurality of spray heads (23) arranged thereon, characterized in that: The support platform (1) is provided with a surrounding structure that adapts to the shape of the aluminum casting and clamps and cleans the aluminum casting; The circumferential structure comprises two groups of clamping components arranged on the support platform (1) and symmetrically arranged with respect to the central axis of the support platform (1), the clamping components comprising a horizontal seat (5) freely movable in the horizontal direction, the horizontal seat (5) being provided with a corresponding plate (9) movable horizontally synchronously therewith, the corresponding plate (9) comprising an integrally formed extension portion (901), the extension portion (901) being provided with a plurality of groups of arc pressure components for contacting with the outer surface of the aluminum casting; The arc pressure assemblies in the two groups of clamping assemblies are arranged opposite to each other and jointly clamp and fix the aluminum casting. A rectangular groove for the support platform (1) to pass through is provided on the extension part (901). The extension part (901) is also provided with a plurality of fixed punching assemblies for adjusting the direction of a single group of nozzles (23); The horizontal seat (5) is also provided with a cleaning component for washing the aluminum casting after the two-component clamping component fixes the aluminum casting; The arc pressure assembly comprises a U-shaped clamp seat (25) fixed to the extension portion (901) by bolts, a main arc seat (26) is fixedly rotatable on the U-shaped clamp seat (25), and the main arc seat (26) is provided with a plurality of groups of micro-clamp blocks (29) in extrusion contact with the outer surface of the aluminum casting; The primary arc seat (26) has two groups of secondary arc seats (27) that are rotatable on one end surface away from the U-shaped clamp seat (25), and multiple groups of graded arc seats (28) are rotatable on the straight line surface of each group of secondary arc seats (27), and multiple groups of micro-level clamping blocks (29) are rotatable on the straight line surface of each group of graded arc seats (28) away from the secondary arc seat (27); The clamping assembly further comprises a threaded rod (3) driven by a motor and freely rotatable in a vertical direction, the threaded rod (3) being fixedly rotatable on the support platform (1), an internal threaded tube (4) being threadedly connected to the threaded rod (3), a horizontal seat (5) being fixedly rotatable on the internal threaded tube (4), and a clamping assembly for limiting the synchronous rotation of the internal threaded tube (4) and the threaded rod (3) being provided on the horizontal seat (5); The transverse seat (5) is provided with a transverse sliding groove for sliding connection of the corresponding plate (9); The clamping assembly comprises a clamping plate (7) arranged on the transverse seat (5), and the transverse seat (5) is provided with a receiving groove for sliding connection of the clamping plate (7), and a plurality of groups of yielding springs (6) are arranged in the receiving groove, and the two ends of the yielding springs (6) are respectively fixedly connected to the clamping plate (7) and the transverse seat (5), and the internal threaded cylinder (4) is provided with a clamping groove (8) used in conjunction with the clamping plate (7); A positioning pin (10) is fixedly connected to one side of the clamping plate (7) facing the alignment plate (9), and a V-shaped positioning groove (11) for the positioning pin (10) to be slidably connected is provided on the alignment plate (9).

2. The automatic clamping fixture for cleaning special-shaped automotive aluminum castings according to claim 1, wherein: The fixed punch assembly comprises an extension rod (20) arranged on an extension portion (901), and a groove body is provided on the extension portion (901) for the extension rod (20) to slide horizontally, and a swinging ball (22) is provided at one end of the extension rod (20) away from the extension portion (901), and the swinging ball (22) and the nozzle (23) are fixedly connected; A spherical cavity for the swing sphere (22) to slide and connect is formed on the extension rod (20). A locking bolt (32) is threadedly connected to the extension rod (20), and the locking bolt (32) is in contact connection with the swing sphere (22). A lateral pipe (21) is fixedly connected to the outer extension part (901). A plurality of groups of flexible hoses (24) are fixedly penetrated through the lateral pipe (21), and each group of flexible hoses (24) is fixedly penetrated through with the swing sphere (22) in a set of fixed impact components respectively.

3. The automatic clamping fixture for cleaning special-shaped automotive aluminum castings according to claim 2, characterized in that: The cleaning component includes a return flow cylinder (19) fixedly connected to the horizontal seat (5). The liquid outlet end integrally formed with the return flow cylinder (19) is in gas communication with the lateral pipe (21). A piston plate (18) that reciprocates in the horizontal direction is arranged in the return flow cylinder (19), and the outer peripheral surface of the piston plate (18) is in sliding contact with the inner wall of the return flow cylinder (19).

4. The automatic clamping fixture for cleaning special-shaped automotive aluminum castings according to claim 3, characterized in that: A bottom sealing box (2) for receiving the cleaning liquid is fixedly connected below the bearing platform (1). A filter plate (31) is fixedly connected to the inner wall of the bottom sealing box (2), and the bottom sealing box (2) is in gas communication with the liquid inlet end integrally formed with the return flow cylinder (19). A plurality of groups of diversion holes (30) arranged in an array are formed on the bearing platform (1), and the plurality of groups of diversion holes (30) are all in communication with the bottom sealing box (2).

5. The automatic clamping fixture for cleaning special-shaped automotive aluminum castings according to claim 3, characterized in that: The cleaning component further includes a hollow cylinder (12) sleeved on the threaded rod (3). The hollow cylinder (12) is coaxially fixed on the internal thread cylinder (4). A worm (13) is fixedly sleeved on the hollow cylinder (12). The worm (13) is meshed and connected with a worm gear (14). The worm gear (14) rotates on the horizontal seat (5) around a fixed axis, and a shaft position disc (15) is coaxially fixed on the worm gear (14). A swing rod (16) rotates on the shaft position disc (15) around a fixed axis. One end of the piston plate (18) facing the shaft position disc (15) is fixedly connected with a connecting rod (17), and the other end of the swing rod (16) far from the shaft position disc (15) rotates on the connecting rod (17) around a fixed axis.

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