Aluminum alloy casting cooling device

Abstract

The invention relates to the technical field of die-casting aluminum alloy, and particularly discloses an aluminum alloy casting cooling device which comprises a cooling box body, a partition plate is fixedly connected to the interior of the cooling box body, filter plates are fixedly connected to the two sides of the interior of the partition plate, and a plurality of spraying assemblies used for cooling a casting are arranged in the cooling box body. The spraying assembly comprises a flow dividing barrel rotationally connected into the partition plate, a liquid inlet pipe is fixedly inserted into the bottom of the flow dividing barrel, an inner spraying pipe is fixedly inserted into the top of the flow dividing barrel, connecting barrels are fixedly inserted into the annular side of the flow dividing barrel in an annular array mode, and outer spraying barrels are fixedly inserted into the ends, away from the flow dividing barrel, of the connecting barrels. Through cooperation of the structure, the inner side and the outer side of the tubular casting can be cooled at the same time, the spraying pieces are arranged and evenly distributed at the different positions of the tubular casting, the tubular casting can be evenly cooled, and the cooling effect of the tubular casting is improved. And the production quality of the aluminum alloy casting is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting aluminum alloys, and in particular to a cooling device for aluminum alloy castings. Background Art

[0002] Aluminum alloy has the characteristics of low density, good mechanical properties, good processing performance, non-toxicity, easy recycling, excellent electrical conductivity, heat transfer and corrosion resistance. It is a high-strength and lightweight structural part. Tubular aluminum alloy castings are one of the common aluminum alloy castings. When processing aluminum alloy castings, annealing treatment is required. The annealing temperature is generally around 150℃ to 200℃. At this temperature, the casting is not melted and still has rigidity. After annealing, in order to improve production efficiency, for aluminum alloy castings with simple shapes and not very large sizes, spray cooling can be used after stress relief annealing.

[0003] When cooling the pipe fittings, uneven cooling is likely to occur between the inner and outer surfaces. When the cooling rates of the inner and outer surfaces are very different, different parts of the pipe fittings will produce thermal stress due to inconsistent shrinkage. This thermal stress may exceed the strength limit of the aluminum alloy material, causing cracks and affecting the quality of the castings produced.

[0004] In order to solve this problem, a "casting cooling device for aluminum alloy production" with application number "202311313389.0" uses cooling gas to enter the interior of the aluminum alloy tube through the cooling hole, thereby taking away the heat inside the aluminum alloy tube, achieving heat dissipation treatment inside the aluminum alloy tube, and thereby improving the uniformity of cooling. However, this method of introducing air into the cold zone from one end of the pipe, although it can take away the heat in the pipe, the cold air enters from one end of the pipe and is discharged from the other end. The temperature of the cold air will gradually increase, resulting in poor cooling of the air outlet position of the pipe and uneven cooling of both ends of the pipe, which in turn affects the quality of aluminum alloy casting production. Summary of the invention

[0005] The purpose of the present invention is to provide an aluminum alloy casting cooling device, which can cool the inside and outside of the tubular casting at the same time. The spray parts are arranged in large numbers and evenly distributed at different positions of the tubular casting, so that the tubular casting can be cooled more evenly, thereby improving the quality of aluminum alloy casting production, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a cooling device for aluminum alloy castings, comprising a cooling box, a partition is fixedly connected to the inside of the cooling box, filter plates are fixedly connected to the inner sides of the partition, a plurality of spray assemblies for cooling the castings are arranged inside the cooling box, the spray assemblies include a diverter tube rotatably connected to the inside of the partition, a liquid inlet pipe is fixedly inserted at the bottom of the diverter tube, an inner nozzle is fixedly inserted at the top of the diverter tube, a connecting tube is fixedly inserted at the annular array on the annular side of the diverter tube, an outer nozzle is fixedly inserted at the end of the connecting tube away from the diverter tube, a through groove is opened at the corresponding position of the connecting tube inside the outer nozzle, a spray piece is arranged at the position corresponding to the through groove on the inner side of the outer nozzle and on the outer side of the inner nozzle, a supporting assembly for supporting the casting is arranged on the top of the diverter tube, and a lifting assembly for controlling the lifting of the casting is arranged on the inner side of the top of the cooling box.

[0007] Preferably, the supporting assembly includes a bottom ring rotatably connected to the top of the outer side of the diverter cylinder, the top of the bottom ring is slidably connected to the supporting ring, the top of the supporting ring is provided with a supporting groove, the internal annular array of the supporting groove is rotatably connected with a ball, the top of the bottom ring and the position of the supporting ring corresponding to the top of the bottom ring are fixedly connected with a magnetic ring, the magnetic poles of the two magnetic rings on the side close to each other are the same, and the bottom of the bottom ring is provided with an inclined groove.

[0008] Preferably, the lifting assembly includes a mounting frame fixedly connected to the top of the inner side of the cooling box body, the top of the mounting frame is fixedly connected to an electric telescopic rod, the output shaft of the electric telescopic rod passes through the mounting frame and is fixedly connected to a connecting frame, and the outside of the connecting frame is located at the top of multiple outer spray cylinders and is fixedly connected to an auxiliary cylinder.

[0009] Preferably, an annular groove is provided inside the auxiliary cylinder, a sliding groove is provided in the inner annular array of the auxiliary cylinder, the top of the sliding groove is slidably connected to a limiting frame, the inner wall of the sliding groove is fixedly connected to a first elastic membrane near the annular groove, the annular groove is connected to the interior of the connecting frame, circular grooves are provided at the bottom of both sides of the connecting frame, and a flexible membrane is fixedly connected to the inner wall of the circular groove.

[0010] Preferably, an extrusion assembly is arranged above the partition, and the extrusion assembly includes a blocking frame fixedly connected to the middle part of the top of the partition, and slides are slidably connected to the two sides of the blocking frame at corresponding positions of the flexible membrane, and a spring is fixedly connected between the slide and the blocking frame.

[0011] Preferably, the inner top of the auxiliary cylinder is inclined, and the bottom of the limiting frame is fixedly connected with an anti-slip pad.

[0012] Preferably, a rotating assembly is provided below the connecting frame. The rotating assembly includes a straight rod fixedly connected to the bottom of the connecting frame. The bottom of the straight rod passes through the middle part of the blocking frame and the partition plate and is fixedly connected with a lifting plate. A cylinder is fixedly connected to the inside of the lifting plate at a position corresponding to the liquid inlet pipe. A guiding slider is fixedly connected to the inner wall of the cylinder. A spiral groove is formed on the outer wall of the liquid inlet pipe, and the guiding slider moves inside the spiral groove.

[0013] Preferably, a plurality of scraping components are provided on the outer side of the inner spray pipe and the inner side of the outer spray cylinder. The scraping components include elastic strips fixedly connected to the outer side of the inner spray pipe and the inner side of the outer spray cylinder in an annular array. An elastic silicone scraping ring is fixedly connected between the plurality of elastic strips of a single set of scraping components. The elastic strips and the elastic silicone scraping ring are both inclined.

[0014] Preferably, small grooves are formed above the positions corresponding to the elastic strips on the outer side of the inner spray pipe and the inner side of the outer spray cylinder. A second elastic film is fixedly connected to the inside of the small grooves. A push plate is slidably connected to the inside of the small grooves. The end of the push plate is fixedly connected to the second elastic film and the liquid inlet pipe.

[0015] Preferably, a liquid injection assembly for injecting cooling liquid into the liquid inlet pipe is provided at the bottom of the liquid inlet pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. Through the action of the spraying assembly, the inner side and the outer side of the tubular casting can be cooled simultaneously. The spraying parts are provided in large numbers and are evenly distributed at different positions of the tubular casting, so that the tubular casting can be cooled more evenly, thereby improving the quality of the production of aluminum alloy castings;

[0018] 2. Through the combined action of the extrusion assembly and the lifting assembly, the tubular casting can move up and down during cooling, reducing the spraying blind area caused by the gap between adjacent spraying parts, thereby further improving the cooling uniformity and further improving the quality of the produced castings;

[0019] 3. Through the action of the rotating assembly, the inner spray pipe and the outer spray cylinder can drive the spraying parts to rotate, further reducing the spraying blind area, thereby improving the cooling uniformity and further improving the quality of the produced castings;

[0020] 4. Through the action of the scraping component, the liquid flowing down along the wall can pass through the inclined surface of the elastic silicone scraping ring and be discharged from the gap between the elastic strips, thereby further improving the cooling uniformity and further improving the quality of the produced castings. Description of the Drawings

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Is the overall structural view of the present invention;

[0023] Figure 2 Is the schematic semi-sectional structure view of the present invention;

[0024] Figure 3 Is the schematic semi-sectional structure view of the outer spray cylinder of the present invention;

[0025] Figure 4 For the present invention Figure 3 The enlarged view at position A;

[0026] Figure 5 Is the schematic partial exploded view of the spray assembly of the present invention;

[0027] Figure 6 Is the schematic semi-sectional structure view of the connecting frame of the present invention;

[0028] Figure 7 Is the schematic semi-sectional structure view of the auxiliary cylinder of the present invention;

[0029] Figure 8 Is the schematic partial structure view of the rotating assembly of the present invention;

[0030] Figure 9 Is the schematic top-sectional view of the outer spray cylinder of the present invention;

[0031] Figure 10 Is the schematic partial structure view of the elastic silicone scraping ring of the present invention.

[0032] Explanation of reference numerals:

[0033] 1. Cooling box body; 2. Partition board; 3. Filter board; 4. Spraying assembly; 41. Shunt cylinder; 42. Liquid inlet pipe; 43. Inner spraying pipe; 44. Connecting cylinder; 45. Outer spraying cylinder; 46. Through groove; 47. Spraying part; 5. Supporting assembly; 51. Bottom ring; 52. Supporting ring; 53. Supporting groove; 54. Spherical bead; 55. Magnetic ring; 56. Inclined groove; 6. Lifting assembly; 61. Mounting rack; 62. Electric telescopic rod; 63. Connecting rack; 64. Auxiliary cylinder; 65. Ring groove; 66. Sliding groove; 67. Limiting rack; 68. First elastic film; 69. Flexible film; 610. Circular groove; 611. Anti-slip pad; 7. Extrusion assembly; 71. Blocking rack; 72. Sliding rack; 73. Spring; 8. Rotating assembly; 81. Straight rod; 82. Lifting plate; 83. Cylindrical barrel; 84. Guide sliding block; 9. Scraping-off assembly; 91. Elastic strip; 92. Elastic silicone scraping ring; 93. Small groove; 94. Second elastic film; 95. Pushing plate; 10. Liquid injection assembly. Specific embodiments

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 to 5 and Figure 8, the present invention provides a technical solution: an aluminum alloy casting cooling device, including a cooling box body 1, a partition 2 is fixedly connected inside the cooling box body 1, filter plates 3 are fixedly connected to both sides inside the partition 2, and a plurality of spraying components 4 for cooling the casting are arranged inside the cooling box body 1. The spraying component 4 includes a flow dividing cylinder 41 rotatably connected inside the partition 2. A liquid inlet pipe 42 is fixedly inserted at the bottom of the flow dividing cylinder 41, an inner spray pipe 43 is fixedly inserted at the top of the flow dividing cylinder 41, connecting cylinders 44 are fixedly inserted in an annular array on the circumferential side of the flow dividing cylinder 41, an outer spray cylinder 45 is fixedly inserted at the end of the connecting cylinder 44 away from the flow dividing cylinder 41, a through groove 46 is opened at the position corresponding to the connecting cylinder 44 inside the outer spray cylinder 45, and spraying members 47 are arranged at the positions corresponding to the through groove 46 on the inner side of the outer spray cylinder 45 and on the outer side of the inner spray pipe 43. A supporting component 5 for supporting the casting is arranged at the top of the flow dividing cylinder 41, and a lifting component 6 for controlling the lifting of the casting is arranged on the inner side of the top of the cooling box body 1. The supporting component 5 includes a bottom ring 51 rotatably connected to the top of the outer side of the flow dividing cylinder 41. A supporting ring 52 is slidably connected to the top of the bottom ring 51. A supporting groove 53 is opened at the top of the supporting ring 52. Spherical beads 54 are rotatably connected in an annular array inside the supporting groove 53. An inclined groove 56 is opened at the bottom of the bottom ring 51. A liquid injection component 10 for injecting a cooling liquid into the liquid inlet pipe 42 is arranged at the bottom of the liquid inlet pipe 42.

[0036] By adopting the above technical solution, during use, the annealed aluminum alloy tubular casting to be cooled is placed into the outer spray cylinder 45 from above by an external clamping device. After the casting is placed, the bottom of the tubular casting is inserted into the supporting groove 53, which plays a certain role in limiting the tubular casting. At this time, the tubular casting is located inside the outer spray cylinder 45 and outside the inner spray pipe 43.

[0037] Subsequently, the cooling liquid is introduced into the liquid inlet pipe 42 through the liquid injection component 10 arranged at the bottom, and then enters the flow dividing cylinder 41 through the liquid inlet pipe 42. The plurality of connecting cylinders 44 are evenly distributed, and the liquid entering the liquid inlet pipe 42 enters the connecting cylinders 44 and the inner spray pipe 43 more evenly.

[0038] The liquid entering the connecting cylinder 44 then enters the through groove 46 and finally sprays from the spraying member 47 on the inner side of the outer spray cylinder 45 onto the outer wall of the tubular casting to cool the outer wall of the aluminum alloy. The liquid entering the inner spray pipe 43 enters the spraying member 47 from the inner spray pipe 43 and sprays onto the inner wall of the tubular casting. Such a design can cool the inner and outer sides of the tubular casting simultaneously. The spraying members 47 are arranged in a large number and evenly distributed at different positions of the tubular casting, which can cool the tubular casting more evenly, thereby improving the quality of aluminum alloy casting production.

[0039] Compared with the way that cold air enters from one end of the pipeline and is discharged from the other end for cooling, this solution will not result in uneven cooling at both ends of the pipeline, making the cooling uniformity relatively high.

[0040] The liquid sprayed for cooling the tubular casting will flow downward. The water outside the tubular casting flows onto the partition plate 2 through the gaps between multiple connecting cylinders 44. The water inside the tubular casting flows out from the inclined groove 56 and falls onto the partition plate 2. The liquid falling above the partition plate 2 enters the inner bottom of the cooling box 1 through the filter holes of the filter plate 3 and then is discharged from the pipeline at the left side of the bottom of the cooling box 1.

[0041] Specifically, as Figures 2 to 8 shown, the inner top of the auxiliary cylinder 64 is inclined. The bottom of the limiting frame 67 is fixedly connected with an anti-slip pad 611. The lifting assembly 6 includes a mounting frame 61 fixedly connected to the inner top of the cooling box 1. The top of the mounting frame 61 is fixedly connected with an electric telescopic rod 62. The output shaft of the electric telescopic rod 62 passes through the mounting frame 61 and is fixedly connected with a communicating frame 63. The outer side of the communicating frame 63 is fixedly connected with an auxiliary cylinder 64 at the top of multiple outer spray cylinders 45. An annular groove 65 is formed inside the auxiliary cylinder 64. Sliding grooves 66 are annularly arranged on the inner side of the auxiliary cylinder 64. The top of the sliding groove 66 is slidably connected with a limiting frame 67. A first elastic film 68 is fixedly connected to the inner wall of the sliding groove 66 near the annular groove 65. The annular groove 65 is communicated with the inside of the communicating frame 63. Circular grooves 610 are formed at the bottom of both sides of the communicating frame 63. A flexible film 69 is fixedly connected to the inner wall of the circular groove 610. An extrusion assembly 7 is arranged above the partition plate 2. The extrusion assembly 7 includes a blocking frame 71 fixedly connected to the middle part of the top of the partition plate 2. Slide frames 72 are slidably connected to the corresponding positions of the flexible film 69 on both sides of the blocking frame 71. Springs 73 are fixedly connected between the slide frames 72 and the blocking frame 71. Magnetic rings 55 are fixedly connected to the top of the bottom ring 51 and the corresponding position of the supporting ring 52 at the top of the bottom ring 51. The magnetic poles of the two magnetic rings 55 on the side close to each other are the same. The magnetic rings 55 are made of high-temperature resistant magnetic materials.

[0042] By adopting the above technical solution, the mounting frame 61 and multiple auxiliary cylinders 64 are arranged in a staggered manner to ensure that the tubular aluminum alloy casting to be cooled can enter the inside of the outer spray cylinder 45.

[0043] When the electric telescopic rod 62 is in the contracted state, the top of the slide frame 72 is just located below the flexible film 69. At this time, the slide frame 72 does not exert extrusion. At this time, under the action of the self-elastic force of the first elastic film 68, the limiting frame 67 is completely hidden inside the sliding groove 66.

[0044] It should be noted that the inner diameter of the auxiliary cylinder 64 is adapted to the outer diameter of the tubular casting. When the tubular casting is placed into the inner part of the outer spray cylinder 45, the tubular casting enters from the inner part of the auxiliary cylinder 64. The auxiliary cylinder 64 can play a role in positioning the tubular casting to ensure that the bottom of the tubular casting can enter the inner part of the supporting groove 53 as it is placed downward.

[0045] When the bottom of the tubular casting enters the inner part of the supporting groove 53, the top of the tubular casting is located below the sliding groove 66. At this time, the output shaft of the electric telescopic rod 62 slightly extends, so that the top of the sliding frame 72 squeezes the flexible film 69. At this time, the flexible film 69 is in a contracted state, and the internal gas pressure of the connecting frame 63 and the annular groove 65 increases, so that the first elastic film 68 deforms. In this way, the end of the limiting frame 67 away from the flexible film 69 extends out of the inner part of the sliding groove 66, blocking the upper part of the tubular casting. The extended part of the limiting frame 67 can cooperate with the supporting assembly 5 to limit the tubular casting.

[0046] Since the magnetic poles on the closer sides of the two magnetic rings 55 are the same, in the initial state, under the magnetic force, the two magnetic rings 55 move away from each other. When performing spray cooling, after the top of the sliding frame 72 squeezes the flexible film 69, the electric telescopic rod 62 continues to extend and contract, and repeats the operations of extending and contracting. During this process, when the output shaft of the electric telescopic rod 62 extends, the sliding frame 72 slides with the blocking frame 71. Under the elastic force of the spring 73, the sliding frame 72 maintains the extrusion of the flexible film 69. At the same time, the connecting frame 63 drives the auxiliary cylinder 64 to move downward. At this time, the limiting frame 67 squeezes the tubular casting and makes the tubular casting move downward. At this time, the supporting ring 52 moves downward against the magnetic force. Subsequently, the output shaft of the electric telescopic rod 62 contracts, so that the connecting frame 63 drives the auxiliary cylinder 64 to move upward. Under the action of the magnetic force, the supporting ring 52 drives the tubular casting to reset upward.

[0047] In this way, the tubular casting can move up and down during cooling, reducing the spray blind area caused by the gaps between adjacent spray parts 47, thereby further improving the cooling uniformity and then improving the quality of the castings produced.

[0048] Specifically, as Figures 2 to 8 shown, a rotating assembly 8 is arranged below the connecting frame 63. The rotating assembly 8 includes a straight rod 81 fixedly connected to the bottom of the connecting frame 63. The bottom of the straight rod 81 passes through the middle part of the blocking frame 71 and the partition plate 2 and is fixedly connected with a lifting plate 82. A cylinder 83 is fixedly connected to the inner part of the lifting plate 82 at the corresponding position of the liquid inlet pipe 42. A guiding slider 84 is fixedly connected to the inner wall of the cylinder 83. A spiral groove is formed on the outer wall of the liquid inlet pipe 42, and the guiding slider 84 moves in the spiral groove.

[0049] By adopting the above technical solution, during spraying, when the output shaft of the electric telescopic rod 62 is reciprocatedly extended and retracted, the connecting frame 63 can be moved up and down, so that the straight rod 81 moves up and down with the lifting plate 82 and the cylinder 83. At this time, a relative displacement occurs between the cylinder 83 and the liquid inlet pipe 42, and the guide slider 84 slides inside the spiral groove, so that the liquid inlet pipe 42 rotates with the diverter tube 41, the connecting tube 44, the inner nozzle 43, the outer nozzle 45 and the spray element 47. In this way, the inner nozzle 43 and the outer nozzle 45 rotate with the spray element 47, further reducing the blind area of ​​the spray, thereby improving the uniformity of cooling and further improving the quality of the produced castings.

[0050] The anti-skid pad 611 is made of high-temperature resistant carbon fiber material. When the anti-skid pad 611 at the bottom of the limiting frame 67 squeezes the tubular casting, the anti-skid pad 611 plays a role in limiting the tubular casting, reducing the possibility of the tubular casting rotating with the spray assembly 4 as a whole. The design of the rotatable connection between the ball 54 and the bottom ring 51 and the diverter tube 41 reduces the resistance between the overall rotation of the spray assembly 4 and the tubular casting.

[0051] The spray element 47 is composed of a pipeline and a pressure nozzle, which is a mature existing technology and will not be described in detail. The pressure nozzle is conducive to spraying fine spray, thereby helping to improve the uniformity of cooling.

[0052] The liquid injection assembly 10 includes a circular frame fixedly connected to the inner bottom of the cooling box 1, and a rotating joint is installed between the circular frame and the liquid inlet pipe 42 to ensure that the rotation of the liquid inlet pipe 42 does not affect the circulation of the liquid. The rotating joint is a mature existing technology and will not be elaborated on. The circular frame is connected to the external circulation pipeline, and a pressure pump is installed in the external circulation pipeline to ensure that the liquid has sufficient pressure to enter the spray pipe area and be sprayed out from the pressure nozzle.

[0053] Specifically, Figures 2 to 5 and Figures 9 to 10 As shown, multiple groups of scraping components 9 are arranged on the outer side of the inner nozzle 43 and the inner side of the outer nozzle 45. The scraping components 9 include elastic strips 91 fixedly connected to the outer side of the inner nozzle 43 and the inner side of the outer nozzle 45 in a circular array. Elastic silicone scraping rings 92 are fixedly connected between the multiple elastic strips 91 of a single group of scraping components 9. The elastic strips 91 and the elastic silicone scraping rings 92 are both inclined. The width of the elastic silicone scraping rings 92 is narrow to reduce obstruction to spraying.

[0054] By adopting the above technical solution, the elastic strip 91 is made of an elastic material, and the elastic silicone scraper ring 92 is made of an elastic and high-temperature resistant latex silicone material. During spray cooling, the liquid sprayed on the tubular casting will flow down along the wall and gradually absorb heat. When it flows to the bottom of the pipe, the temperature is relatively high and it will prevent the subsequent sprayed liquid from contacting the tubular casting, thereby affecting the uniformity of cooling.

[0055] When the entire spray assembly 4 moves up and down, relative movement occurs between the elastic silicone scraping ring 92 and the tubular casting. At this time, the tubular casting is scraped, causing the liquid flowing down along the wall to pass through the inclined surface of the elastic silicone scraping ring 92 and drain from the gap between the elastic strips 91, thereby further improving the cooling uniformity and then enhancing the quality of the castings produced.

[0056] It should be noted that the frictional force provided by the anti-slip pad 611 to the tubular casting is much greater than the resistance between the elastic silicone scraping ring 92 and the tubular casting during movement.

[0057] Specifically, as Figures 2 to 5 and Figures 9 to 10 shown, small grooves 93 are provided above the corresponding positions of the elastic strips 91 on the outer side of the inner spray pipe 43 and the inner side of the outer spray cylinder 45. A second elastic film 94 is fixedly connected inside the small grooves 93. A push plate 95 is slidably connected inside the small grooves 93. The end of the push plate 95 is fixedly connected to the second elastic film 94 and the liquid inlet pipe 42.

[0058] By adopting the above technical solution, both the second elastic film 94 and the first elastic film 68 are made of silicone rubber material.

[0059] Under the action of the pressure pump, when placing the tubular casting before spraying, under the action of the second elastic film 94, the push plate 95 does not extrude the corresponding elastic strip 91. At this time, the elastic silicone scraping ring 92 does not contact the tubular casting when placing the casting, which is convenient for placing the casting. During the spraying process, under the action of the pressure pump arranged outside, the pressure inside the inner spray pipe 43 and the through groove 46 is relatively large, and the second elastic film 94 deforms, causing the push plate 95 to act on the elastic strip 91, making the elastic strip 91 deform and tilt. The elastic silicone scraping ring 92 tilts accordingly and its internal elasticity extends. At this time, the elastic silicone scraping ring 92 fits the tubular casting, ensuring the effect of scraping the liquid adhering to the wall.

[0060] Working principle: Place the tubular casting. The aluminum alloy tubular casting that needs to be cooled after annealing is placed into the interior of the outer spray cylinder 45 from above the outer spray cylinder 45 through an external clamping device. The inner diameter of the auxiliary cylinder 64 is adapted to the outer diameter of the tubular casting, playing a role in positioning the tubular casting. At this time, the pressure pump is not started, and there is no large pressure inside the inner spray pipe 43 and the through groove 46. The push plate 95 does not squeeze the corresponding elastic strip 91. At this time, the elastic silicone scraping ring 92 does not contact the tubular casting when placing the tubular casting, facilitating the placement of the casting. After the casting is placed, the bottom of the tubular casting is inserted into the interior of the supporting groove 53. The output shaft of the electric telescopic rod 62 slightly extends, causing the top of the sliding carriage 72 to squeeze the flexible film 69. At this time, the flexible film 69 is in a contracted state, and the gas pressure inside the connecting frame 63 and the annular groove 65 increases, causing the first elastic film 68 to deform. In this way, the end of the limiting frame 67 away from the flexible film 69 extends out of the interior of the sliding groove 66, blocking the upper part of the tubular casting. The extended part of the limiting frame 67 can cooperate with the supporting component 5 to limit the tubular casting.

[0061] For cooling, the liquid injection component 10 injects the liquid used for cooling into the interior of the liquid inlet pipe 42, and then enters the interior of the shunt cylinder 41 through the liquid inlet pipe 42, causing the liquid entering the interior of the inner spray pipe 43 to enter the spray part 47 from the inner spray pipe 43 and spray onto the inner wall of the tubular casting, realizing simultaneous cooling of the inner and outer sides of the tubular casting. Moreover, a relatively large number of spray parts 47 are provided, which can cool the tubular casting more evenly, thereby improving the quality of aluminum alloy casting production.

[0062] After the top of the sliding carriage 72 squeezes the flexible film 69, the output shaft of the electric telescopic rod 62 reciprocally extends and contracts, causing the tubular casting to move up and down during cooling, reducing the spray blind area caused by the gap between adjacent spray parts 47, thereby further improving the cooling uniformity and further improving the quality of the produced casting.

[0063] While the output shaft of the electric telescopic rod 62 reciprocally extends and contracts, the straight rod 81 drives the lifting plate 82 and the cylinder 83 to move up and down. At this time, a relative displacement is generated between the cylinder 83 and the liquid inlet pipe 42, and the guiding slider 84 slides inside the spiral groove, causing the liquid inlet pipe 42 to drive the shunt cylinder 41, the connecting cylinder 44, the inner spray pipe 43, the outer spray cylinder 45, and the spray part 47 to rotate. In this way, the spray part 47 can rotate, further reducing the spray blind area, thereby improving the cooling uniformity.

[0064] While the output shaft of the electric telescopic rod 62 reciprocally extends and contracts, a relative movement is generated between the elastic silicone scraping ring 92 and the tubular casting. At this time, the tubular casting is scraped, causing the liquid flowing down along the wall to pass through the inclined surface of the elastic silicone scraping ring 92 and drain from the gap between the elastic strips 91, thereby further improving the cooling uniformity and further improving the quality of the produced casting.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling device for aluminum alloy castings, comprising a cooling box (1), characterized in that: A partition (2) is fixedly connected to the interior of the cooling box (1), filter plates (3) are fixedly connected to both sides of the interior of the partition (2), and a plurality of spray assemblies (4) for cooling the casting are arranged inside the cooling box (1); The spray assembly (4) comprises a flow divider (41) rotatably connected to the interior of the partition (2); a liquid inlet pipe (42) is fixedly inserted at the bottom of the flow divider (41); an inner nozzle (43) is fixedly inserted at the top of the flow divider (41); a connecting cylinder (44) is fixedly inserted in the annular array on the annular side of the flow divider (41); an outer nozzle (45) is fixedly inserted at the end of the connecting cylinder (44) away from the flow divider (41); a through groove (46) is provided inside the outer nozzle (45) at a position corresponding to the through groove (46); and a spray element (47) is provided at a position on the inner side of the outer nozzle (45) corresponding to the through groove (46) and on the outer side of the inner nozzle (43); A supporting assembly (5) for supporting the casting is arranged on the top of the diverter cylinder (41), and a lifting assembly (6) for controlling the lifting of the casting is arranged on the inner side of the top of the cooling box (1).

2. The aluminum alloy casting cooling device according to claim 1, characterized in that: The support assembly (5) comprises a bottom ring (51) rotatably connected to the top of the outer side of the diverter tube (41); the top of the bottom ring (51) is slidably connected to a support ring (52); the top of the support ring (52) is provided with a support groove (53); the inner annular array of the support groove (53) is rotatably connected to a round ball (54); the top of the bottom ring (51) and the position of the support ring (52) corresponding to the top of the bottom ring (51) are fixedly connected to a magnetic ring (55); the magnetic poles of the two magnetic rings (55) on the side close to each other are the same; and the bottom of the bottom ring (51) is provided with an inclined groove (56).

3. The aluminum alloy casting cooling device according to claim 1, characterized in that: The lifting assembly (6) comprises a mounting frame (61) fixedly connected to the top of the inner side of the cooling box (1); the top of the mounting frame (61) is fixedly connected to an electric telescopic rod (62); the output shaft of the electric telescopic rod (62) passes through the mounting frame (61) and is fixedly connected to a connecting frame (63); the outer side of the connecting frame (63) is located at the top of a plurality of outer spray cylinders (45) and is fixedly connected to an auxiliary cylinder (64).

4. The aluminum alloy casting cooling device according to claim 3, characterized in that: The auxiliary tube (64) is provided with an annular groove (65) inside, and a sliding groove (66) is provided in an annular array inside the auxiliary tube (64). The top of the sliding groove (66) is slidably connected to a limiting frame (67). The inner wall of the sliding groove (66) is fixedly connected to a first elastic membrane (68) near the annular groove (65). The annular groove (65) is connected to the inside of the connecting frame (63). The bottom of both sides of the connecting frame (63) is provided with circular grooves (610), and the inner wall of the circular groove (610) is fixedly connected to a flexible membrane (69).

5. The aluminum alloy casting cooling device according to claim 3, characterized in that: An extrusion assembly (7) is arranged above the partition (2), and the extrusion assembly (7) includes a blocking frame (71) fixedly connected to the middle part of the top of the partition (2), and slide frames (72) are slidably connected at corresponding positions of the flexible membrane (69) on both sides of the blocking frame (71), and a spring (73) is fixedly connected between the slide frame (72) and the blocking frame (71).

6. The aluminum alloy casting cooling device according to claim 4, characterized in that: The inner top of the auxiliary tube (64) is arranged tilted, and the bottom of the limiting frame (67) is fixedly connected with an anti-slip pad (6).

7. The aluminum alloy casting cooling device according to claim 3, characterized in that: A rotating assembly (8) is arranged below the connecting frame (63), and the rotating assembly (8) comprises a straight rod (81) fixedly connected to the bottom of the connecting frame (63); the bottom of the straight rod (81) passes through the middle part of the blocking frame (71) and the partition (2) and is fixedly connected to a lifting plate (82); a cylinder (83) is fixedly connected inside the lifting plate (82) at a corresponding position of the liquid inlet pipe (42); a guide slider (84) is fixedly connected to the inner wall of the cylinder (83); a spiral groove is provided on the outer wall of the liquid inlet pipe (42), and the guide slider (84) moves inside the spiral groove.

8. The aluminum alloy casting cooling device according to claim 1, characterized in that: A plurality of scraping assemblies (9) are arranged on the outer side of the inner nozzle (43) and the inner side of the outer nozzle (45), and the scraping assemblies (9) include elastic strips (91) fixedly connected in a circular array to the outer side of the inner nozzle (43) and the inner side of the outer nozzle (45), and elastic silicone scraping rings (92) are fixedly connected between the plurality of elastic strips (91) of a single scraping assemblies (9), and the elastic strips (91) and the elastic silicone scraping rings (92) are both arranged obliquely.

9. The aluminum alloy casting cooling device according to claim 8, characterized in that: A small groove (93) is provided on the outer side of the inner nozzle (43) and the inner side of the outer nozzle barrel (45) above the corresponding position of the elastic strip (91); a second elastic membrane (94) is fixedly connected inside the small groove (93); a push plate (95) is slidably connected inside the small groove (93); an end of the push plate (95) is fixedly connected to the second elastic membrane (94) and the liquid inlet pipe (42).

10. The aluminum alloy casting cooling device according to claim 1, characterized in that: A liquid injection assembly (10) for injecting cooling liquid into the liquid inlet pipe (42) is provided at the bottom of the liquid inlet pipe (42).

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