Metal casting surface polishing equipment

Abstract

The invention belongs to the technical field of metal casting polishing equipment, and particularly discloses metal casting surface polishing equipment which comprises a mounting table, a motor is arranged at the bottom of the mounting table, and an output shaft of the motor is fixedly connected with the bottom of the mounting table. A feeding station, a polishing station, a water removing station and a discharging station are formed in the rotating direction of the motor driving mounting table, the four stations can work synchronously, streamlined operation is achieved, the polishing efficiency is improved, the polishing machine is suitable for batch production, the production efficiency is effectively improved, and the production cost is reduced. The four stations work synchronously, water removal operation and feeding and discharging operation can be carried out in the waiting time of polishing of the polishing station, the working efficiency is high, workers only need to carry out feeding and discharging operation, workpieces do not need to be taken out of a working cavity of the magnetic polishing equipment, operation is easy and convenient, and the labor intensity is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of metal casting polishing equipment, and in particular relates to a metal casting surface polishing equipment. Background Art

[0002] Polishing refers to a processing method that uses mechanical, chemical or electrochemical effects to reduce the surface roughness of a workpiece to obtain a bright and smooth surface. It is a modification process of the workpiece surface using polishing tools and abrasive particles or other polishing media. For the polishing of castings, such as aluminum castings, magnetic polishing machines are mostly used due to their small size and different shapes.

[0003] At present, when using the existing magnetic polishing machine, the workpiece needs to be placed in the working chamber of the magnetic polishing machine first. After polishing is completed, the workpiece placed in the working chamber of the magnetic polishing machine needs to be taken out separately and the water remaining on the surface needs to be cleaned. This operation is relatively cumbersome and the work efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to provide a metal casting surface polishing device.

[0005] To achieve the above purpose, the present invention provides a metal casting surface polishing device, including a mounting table, a motor is arranged at the bottom of the mounting table, the output shaft of the motor is fixedly connected to the bottom of the mounting table, the surface of the mounting table is fixedly connected to evenly distributed mounting plates, and a magnetic polishing device is arranged on one side of the mounting table; a placement mechanism, the placement mechanism is arranged on the surface of the mounting plate, and the placement mechanism is used for the transportation of workpieces; an air spray mechanism, the air spray mechanism is arranged on one side of the mounting table, and the air spray mechanism is used to clean the water remaining on the surface of the workpiece after polishing; wherein The placement mechanism includes a connecting ring fixedly connected to the top of the mounting plate, a notch connected to the connecting ring is opened at the bottom of the mounting plate, a mounting cavity is formed between the inner side of the connecting ring and the inner side of the notch, a guide groove is opened on the inner wall of the mounting cavity, and the guide groove is spirally arranged, a retaining ring connected to the notch is fixedly connected to the bottom of the mounting plate, a placement shell is arranged inside the mounting cavity, the lower end of the placement shell passes through the retaining ring and the surface of the placement shell is opened with evenly distributed through holes, and a guide rod slidably connected to the inner wall of the guide groove is fixedly connected to the surface of the placement shell.

[0006] In the above technical solution, further, two symmetrically distributed hydraulic push rods are provided at the bottom of the mounting plate, the output shafts of the hydraulic push rods pass through the mounting plate and are fixedly connected to a fixing member, the bottom of the fixing member is fixedly connected to a fixing rod, and the lower end of the fixing rod is slidably connected to the top of the placement shell.

[0007] In the above technical solution, further, a baffle is provided at the lower end of the placement shell, and evenly distributed filter holes are opened on the surface of the baffle. A connecting plate is fixedly connected to the inner side of the placement shell, and a mounting column is fixedly connected to the bottom of the connecting plate. A mounting rod is rotatably connected to the inner wall of the mounting column, and the lower end of the mounting rod passes through the mounting column and is fixedly connected to the top of the baffle.

[0008] In the above technical solution, further, a spring is fixedly connected to the surface of the mounting rod, and the other end of the spring is fixedly connected to the inner wall of the mounting column.

[0009] In the above technical solution, further, the air spray mechanism includes a collecting cylinder arranged on one side of the mounting platform, a collecting chamber is opened at the top of the collecting cylinder, an exhaust shell is connected to the collecting chamber on one side of the collecting cylinder, a guide plate is fixedly connected to the surface of the collecting cylinder, the other end of the guide plate is fixedly connected to the surface of the magnetic polishing equipment, and a guide plate is fixedly connected to the inner wall of the guide plate.

[0010] In the above technical solution, further, the air spray mechanism also includes four mounting blocks respectively fixedly connected to the side of the mounting plate away from the mounting platform, guide inclined surfaces are provided on both sides of the mounting blocks, a groove is provided in the middle of the surface of the mounting block, and inclined surfaces are provided on both sides of the inner wall of the groove.

[0011] In the above technical solution, further, the air spray mechanism also includes a connecting shell arranged on one side of the collecting cylinder, a drainage fan is arranged inside the connecting shell, evenly distributed air inlet holes are opened on the surface of the connecting shell, a filter is fixedly connected to the surface of the connecting shell, and the top of the connecting shell is connected to a connecting pipe.

[0012] In the above technical solution, further, a mounting tube is provided on the surface of the connecting tube, and the cross-sectional shape of the mounting tube is approximately an inverted "J" shape. A fixing ring is fixedly connected to the surface of the mounting tube, and a spring is fixedly connected between the bottom of the fixing ring and the top of the connecting shell. The other end of the connecting tube is connected to an exhaust hood, and the exhaust hood is coaxially arranged with the adjacent connecting ring.

[0013] In the above technical solution, further, a mounting ring is fixedly connected to the surface of the mounting tube, a guide rod is fixedly connected to the bottom of the mounting ring, and the lower end of the guide rod is in contact with the surface of the adjacent mounting block.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting four mounting plates, mounting tables, four placement mechanisms, air jet mechanisms and motors, a loading station, a polishing station, a water removal station and a material removal station are formed along the rotation direction of the motor-driven mounting table. The four stations can work synchronously, streamlined operation, and the efficiency of polishing processing is improved. It is suitable for batch production and effectively improves production efficiency. The synchronous work of the four stations can perform water removal operations and material loading and unloading operations during the waiting time for polishing at the polishing station. The work efficiency is high, and the staff only needs to perform loading and unloading work without taking out the workpiece from the working chamber of the magnetic polishing equipment. The operation is simple, the labor intensity is reduced, and batch polishing can effectively improve the production capacity; 2. After polishing is completed, in the process of separating the placement shell from the working chamber of the magnetic polishing equipment, the placement shell can be driven to rotate through the cooperation of the guide rod and the guide groove, which can speed up the discharge of residual water inside, reduce the time of subsequent water removal treatment, and reduce production costs. At the same time, during the transfer process, the guide plate and the guide plate can intercept the dripping water under the cooperation of each other, avoiding the problem of water dripping on the ground and being inconvenient to clean up, thereby optimizing the working environment; 3. The setting of the air spray mechanism can use the airflow to remove water from the surface of the workpiece after polishing from top to bottom, reducing the water stains formed by water remaining on the surface of the workpiece that affect the product quality BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a metal casting surface polishing device proposed by the present invention; Figure 2 A schematic diagram of the connection between a guide plate and a guide plate of a metal casting surface polishing device proposed by the present invention; Figure 3 A schematic diagram of the connection between a placement mechanism and a safety ring plate of a metal casting surface polishing device proposed by the present invention; Figure 4 A schematic diagram of the connection between a guide rod and a placement shell of a metal casting surface polishing device proposed by the present invention; Figure 5 for Figure 4 A magnified view of middle; Figure 6 A schematic diagram of the distribution of guide grooves and connecting rings of a metal casting surface polishing device proposed by the present invention; Figure 7 The present invention provides a partial cross-sectional schematic diagram of an air jet mechanism of a metal casting surface polishing device.

[0016] In the figure: 1, mounting table; 101, motor; 2, mounting plate; 3, magnetic polishing equipment; 4, air spray mechanism; 401, collecting tube; 402, exhaust shell; 403, collecting chamber; 404, guide plate; 405, guide plate; 406, mounting block; 407, guide slope; 408, groove; 409, connecting shell; 410, filter screen; 411, air inlet hole; 412, drainage fan; 413, connecting pipe; 414, fixed Ring; 415, spring; 416, mounting tube; 417, guide rod; 418, mounting ring; 419, exhaust hood; 5, placement mechanism; 501, placement shell; 502, through hole; 503, guide rod; 504, baffle; 505, connecting plate; 506, mounting column; 507, spring; 508, mounting rod; 509, connecting ring; 510, guide groove; 511, fixing piece; 512, baffle ring; 513, hydraulic push rod. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1-Figure 7 The metal casting surface polishing device shown in the figure comprises a mounting table 1, a motor 101 is arranged at the bottom of the mounting table 1, the output shaft of the motor 101 is fixedly connected to the bottom of the mounting table 1, the surface of the mounting table 1 is fixedly connected to the evenly distributed mounting plate 2, and a magnetic polishing device 3 is arranged on one side of the mounting table 1; a placing mechanism 5, the placing mechanism 5 is arranged on the surface of the mounting plate 2, and the placing mechanism 5 is used for the transportation of the workpiece; an air spraying mechanism 4, the air spraying mechanism 4 is arranged on one side of the mounting table 1, and the air spraying mechanism 4 is used to clean the water remaining on the surface of the workpiece after polishing; wherein the placing mechanism 5 comprises a fixing device 5 fixedly connected to the top of the mounting plate 2 A connecting ring 509 is formed at the bottom of the mounting plate 2, a notch connected to the connecting ring 509 is formed at the bottom of the mounting plate 2, a mounting cavity is formed between the inner side of the connecting ring 509 and the inner side of the notch, a guide groove 510 is formed on the inner wall of the mounting cavity, and the guide groove 510 is spirally arranged, a retaining ring 512 connected to the notch is fixedly connected to the bottom of the mounting plate 2, a placement shell 501 is arranged inside the mounting cavity, the retaining ring 512 is passed through the lower end of the placement shell 501, and the surface of the placement shell 501 is provided with evenly distributed through holes 502, and the surface of the placement shell 501 is fixedly connected with a guide rod 503 slidably connected to the inner wall of the guide groove 510; By starting the motor 101, the mounting platform 1 can be driven to rotate, thereby driving the mounting plate 2 to rotate with the mounting platform 1 as the center. Specifically, there are four mounting plates 2, and the angle between two adjacent mounting plates 2 is ninety degrees. The motor 101 drives the mounting platform 1 to rotate by ninety degrees each time. The placement shell 501 can be moved to slide up and down along the inner wall of the installation cavity. During this process, with the cooperation of the guide groove 510 and the guide rod 503, the guide groove 510 guides the guide rod 503, so that the placement shell 501 can be driven to rotate during the movement of the placement shell 501.

[0019] like Figure 1-Figure 7 As shown, two symmetrically distributed hydraulic push rods 513 are provided at the bottom of the mounting plate 2, the output shaft of the hydraulic push rod 513 passes through the mounting plate 2 and is fixedly connected to a fixing member 511, the bottom of the fixing member 511 is fixedly connected to a fixing rod, and the lower end of the fixing rod is slidably connected to the top of the placement shell 501; A baffle 504 is provided at the lower end of the placement shell 501, and evenly distributed filter holes are opened on the surface of the baffle 504. A connecting plate 505 is fixedly connected to the inner side of the placement shell 501, and a mounting column 506 is fixedly connected to the bottom of the connecting plate 505. A mounting rod 508 is rotatably connected to the inner wall of the mounting column 506, and the lower end of the mounting rod 508 passes through the mounting column 506 and is fixedly connected to the top of the baffle 504.

[0020] A spring 507 is fixedly connected to the surface of the mounting rod 508, and the other end of the spring 507 is fixedly connected to the inner wall of the mounting column 506; By starting the hydraulic push rod 513, the fixing member 511 can be driven to move upward. In this process, the placement shell 501 is driven to move synchronously through the fixing rod, so that the placement shell 501 can slide along the installation cavity. Therefore, the guide groove 510 guides the guide rod 503 to drive the placement shell 501 to rotate during the movement of the placement shell 501. When the placement shell 501 with the workpiece placed on it moves to the top of the working chamber of the magnetic polishing equipment 3, the hydraulic push rod 513 drives the fixing part 511 to reset, so that the placement shell 501 can be inserted into the interior of the working chamber, and the workpiece inside it can be moved to the interior of the working chamber. At this time, it can be polished under the action of the magnetic polishing equipment 3. After the polishing operation is completed, the fixing part 511 is driven upward by the hydraulic push rod 513 to separate the placement shell 501 from the working chamber of the magnetic polishing equipment 3. In this process, the polishing water can be filtered out through the filter holes on the through hole 502 and the baffle 504, and the workpiece is retained inside it. Compared with the operation method of the traditional magnetic polishing equipment 3, this setting method does not require the staff to remove the polishing water from the working chamber. The workpiece can be taken out with simple operation and high automation. The polished workpiece can be driven by the motor 101 to rotate the mounting table 1, so that the part of the placement shell 501 is transferred to the air jet mechanism 4 for dewatering treatment. After the dewatering treatment, it is transferred to the next station again. At this time, the baffle 504 can be pushed to rotate around the rotating connection between the mounting rod 508 and the mounting column 506, so as to achieve the dislocation separation of the baffle 504 and the bottom of the placement shell 501. In this process, the spring 507 can be tightened, and the workpiece that has been processed internally can be discharged, so as to achieve the effect of rapid material discharge. After the material discharge is completed, the baffle 504 can be loosened to reset the baffle 504 under the action of the spring 507, so as to facilitate the placement of the next batch of workpieces. Among them, since the mounting plate 2 is arranged as four corresponding placement mechanisms 5, a loading station, a polishing station, a water removal station and an unloading station are formed along the rotation direction of the mounting table 1 driven by the motor 101. The four stations can work synchronously, and the flow operation is streamlined, which improves the efficiency of the polishing process, is suitable for mass production, and effectively improves the production efficiency. Specifically, the angle between two adjacent stations is ninety degrees.

[0021] like Figure 1-Figure 7 As shown, the air jet mechanism 4 includes a collecting cylinder 401 arranged on one side of the mounting platform 1, a collecting chamber 403 is opened on the top of the collecting cylinder 401, an exhaust shell 402 is connected to the collecting chamber 403 on one side of the collecting cylinder 401, a guide plate 404 is fixedly connected to the surface of the collecting cylinder 401, the other end of the guide plate 404 is fixedly connected to the surface of the magnetic polishing device 3, and a guide plate 405 is fixedly connected to the inner wall of the guide plate 404; After the workpiece is polished, the placement shell 501 drives it to move into the collection chamber 403. The setting of the guide plate 404 and the guide plate 405 can intercept the water dripping during the movement, so that the dripping water can be collected on the inner side of the guide plate 404, and guided into the collection chamber 403 through the guide plate 405 for storage, so that the staff can clean it uniformly. The air spray mechanism 4 also includes four mounting blocks 406 respectively fixedly connected to the side of the mounting plate 2 away from the mounting platform 1, guide inclined surfaces 407 are provided on both sides of the mounting blocks 406, a groove 408 is provided in the middle of the surface of the mounting block 406, and inclined surfaces are provided on both sides of the inner wall of the groove 408.

[0022] The air injection mechanism 4 also includes a connecting shell 409 arranged on one side of the collecting tube 401, a drainage fan 412 is arranged inside the connecting shell 409, evenly distributed air inlet holes 411 are opened on the surface of the connecting shell 409, a filter screen 410 is fixedly connected to the surface of the connecting shell 409, and a connecting pipe 413 is connected to the top of the connecting shell 409.

[0023] A mounting tube 416 is provided on the surface of the connecting tube 413, and the cross-sectional shape of the mounting tube 416 is approximately an inverted "J" shape. A fixing ring 414 is fixedly connected to the surface of the mounting tube 416, and a spring 415 is fixedly connected between the bottom of the fixing ring 414 and the top of the connecting shell 409. The other end of the connecting tube 413 is connected to an exhaust hood 419, and the exhaust hood 419 is coaxially arranged with the adjacent connecting ring 509.

[0024] A mounting ring 418 is fixedly connected to the surface of the mounting tube 416, and a guide rod 417 is fixedly connected to the bottom of the mounting ring 418, and the lower end of the guide rod 417 contacts the surface of the adjacent mounting block 406; The position of the mounting tube 416 is maintained under the action of the spring 415. When the mounting platform 1 rotates and drives the mounting plate 2 to move, the mounting block 406 is simultaneously driven to move, so that the inclined surface on one side of the mounting block 406 pushes the lower end of the guide rod 417 and gradually moves upward with the rotation of the mounting platform 1, which can drive the mounting tube 416 to move upward synchronously and stretch the spring 415. This setting can prevent the exhaust hood 419 from affecting the normal movement of the placement mechanism 5 and prevent the two from interfering with each other. When the placement shell 501 moves to the coaxial position with the collection chamber 403, the guide rod 417 moves along the surface of the mounting block 406 to the groove 408, and the exhaust hood 419 can be reset. The upper end of the connecting ring 509 is blocked, and the drainage fan 412 is started at the same time to filter the outside air through the filter screen 410 and then introduce it into the interior of the connecting shell 409 through the air inlet hole 411, and then introduce it into the interior of the installation tube 416 through the connecting pipe 413 and finally discharged through the exhaust cover 419, so that the discharged airflow blows the interior of the placement shell 501 from top to bottom, and the water adhering to the workpiece is separated from the surface of the workpiece under the action of the airflow, reducing the water residue on the workpiece, which causes the subsequent water stains to be difficult to clean and reduces the product quality. The blown water and airflow can be discharged into the interior of the collecting chamber 403 through the through hole 502 and the filter hole for unified treatment; Working principle: at the loading station, the unpolished workpiece is placed inside the placement shell 501. After the placement is completed, the placement shell 501 is transferred to the magnetic polishing device 3 by starting the motor 101. At the same time, another placement shell 501 is moved to the loading station to add the workpiece. When the placement shell 501 moves to the magnetic polishing device 3, the hydraulic push rod 513 drives the fixing part 511 to reset, so that the placement shell 501 can be inserted into the inside of the working chamber. At the same time, the workpiece inside it can be moved to the inside of the working chamber. At this time, it can be polished under the action of the magnetic polishing device 3. After the polishing operation is completed, the fixing part 511 is driven upward by the hydraulic push rod 513, so that the placement shell 501 and the magnetic polishing device The working chamber of the magnetic polishing device 3 is separated. During this process, the polishing water can be filtered out through the filter holes on the through hole 502 and the baffle 504, and the workpiece is retained inside. Compared with the operation mode of the traditional magnetic polishing device 3, this setting mode does not require the staff to take out the workpiece from the working chamber, and the operation is simple and the degree of automation is high. In addition, due to the setting of the guide groove 510 and the guide rod 503, the placing shell 501 rotates during the separation of the placing shell 501 from the working chamber of the magnetic polishing device 3, and the residual water is thrown out by the action of centrifugal force, thereby improving the discharge effect of the residual water. Then, the motor 101 drives the mounting table 1 to rotate to transfer the placing shell 501 with the polished workpiece to the top of the collecting chamber 403; During this process, the setting of the guide plate 404 and the guide plate 405 can intercept the water dripping during the movement, so that the dripping water can be collected on the inner side of the guide plate 404, and introduced into the collection chamber 403 for internal storage through the guide plate 405, so as to facilitate unified cleaning by the staff. At the same time, in the process of another unpolished workpiece placement shell 501 driving the internal workpiece to move to the working chamber of the magnetic polishing equipment 3 for processing, the placement shell 501 loaded with the polished workpiece can be moved to the interior of the collection chamber 403, and under the action of the air jet mechanism 4, the airflow blows the interior of the placement shell 501 from top to bottom, and the water adhering to the workpiece is separated from the workpiece surface under the action of the airflow, thereby reducing the water residue on the workpiece, resulting in subsequent water stains that are difficult to clean and reduce the product quality. The blown water and airflow can be discharged into the interior of the collection chamber 403 through the through hole 502 and the filter hole for unified treatment.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A metal casting surface polishing device, comprising a mounting table (1), characterized in that: A motor (101) is arranged at the bottom of the mounting platform (1), an output shaft of the motor (101) is fixedly connected to the bottom of the mounting platform (1), evenly distributed mounting plates (2) are fixedly connected to the surface of the mounting platform (1), and a magnetic polishing device (3) is arranged on one side of the mounting platform (1); A placement mechanism (5), the placement mechanism (5) being arranged on a surface of the mounting plate (2), and the placement mechanism (5) being used for transporting workpieces; An air spray mechanism (4), the air spray mechanism (4) being arranged on one side of the mounting platform (1), and the air spray mechanism (4) being used to clean residual water on the surface of the workpiece after polishing; The placement mechanism (5) comprises a connecting ring (509) fixedly connected to the top of the mounting plate (2); a notch connected to the connecting ring (509) is provided at the bottom of the mounting plate (2); a mounting cavity is formed between the inner side of the connecting ring (509) and the inner side of the notch; a guide groove (510) is provided on the inner wall of the mounting cavity; the guide groove (510) is arranged in a spiral shape; a retaining ring (512) connected to the notch is fixedly connected to the bottom of the mounting plate (2); a placement shell (501) is arranged inside the mounting cavity; the retaining ring (512) passes through the lower end of the placement shell (501); and evenly distributed through holes (502) are provided on the surface of the placement shell (501); and a guide rod (503) slidably connected to the inner wall of the guide groove (510) is fixedly connected to the surface of the placement shell (501).

2. A metal casting surface polishing device according to claim 1, characterized in that: Two symmetrically distributed hydraulic push rods (513) are provided at the bottom of the mounting plate (2); the output shafts of the hydraulic push rods (513) pass through the mounting plate (2) and are fixedly connected to a fixing member (511); the bottom of the fixing member (511) is fixedly connected to a fixing rod; the lower end of the fixing rod is slidably connected to the top of the placement shell (501).

3. A metal casting surface polishing device according to claim 2, characterized in that: A baffle (504) is provided at the lower end of the placement shell (501), and evenly distributed filter holes are opened on the surface of the baffle (504). A connecting plate (505) is fixedly connected to the inner side of the placement shell (501), and a mounting column (506) is fixedly connected to the bottom of the connecting plate (505). A mounting rod (508) is rotatably connected to the inner wall of the mounting column (506), and the lower end of the mounting rod (508) passes through the mounting column (506) and is fixedly connected to the top of the baffle (504).

4. A metal casting surface polishing device according to claim 3, characterized in that: A spring (507) is fixedly connected to the surface of the mounting rod (508), and the other end of the spring (507) is fixedly connected to the inner wall of the mounting column (506).

5. The metal casting surface polishing equipment according to claim 1, characterized in that: The air spray mechanism (4) comprises a collecting tube (401) arranged on one side of the mounting platform (1), a collecting chamber (403) being provided at the top of the collecting tube (401), an exhaust shell (402) being connected to the collecting chamber (403) at one side of the collecting tube (401), a guide plate (404) being fixedly connected to the surface of the collecting tube (401), the other end of the guide plate (404) being fixedly connected to the surface of the magnetic polishing device (3), and a guide plate (405) being fixedly connected to the inner wall of the guide plate (404).

6. The metal casting surface polishing equipment according to claim 5, characterized in that: The air jet mechanism (4) further comprises four mounting blocks (406) respectively fixedly connected to a side of the mounting plate (2) away from the mounting platform (1), guide inclined surfaces (407) being provided on both sides of the mounting blocks (406), a groove (408) being provided in the middle of the surface of the mounting block (406), and inclined surfaces being provided on both sides of the inner wall of the groove (408).

7. A metal casting surface polishing device according to claim 6, characterized in that: The air injection mechanism (4) further comprises a connecting shell (409) arranged on one side of the collecting cylinder (401); a drainage fan (412) is arranged inside the connecting shell (409); evenly distributed air inlet holes (411) are provided on the surface of the connecting shell (409); a filter screen (410) is fixedly connected to the surface of the connecting shell (409); and a connecting pipe (413) is connected to the top of the connecting shell (409).

8. The metal casting surface polishing equipment according to claim 7, characterized in that: A mounting tube (416) is provided on the surface of the connecting tube (413); the cross-sectional shape of the mounting tube (416) is approximately an inverted "J" shape; a fixing ring (414) is fixedly connected to the surface of the mounting tube (416); a spring (415) is fixedly connected between the bottom of the fixing ring (414) and the top of the connecting shell (409); the other end of the connecting tube (413) is connected to an exhaust hood (419); the exhaust hood (419) is coaxially arranged with the adjacent connecting ring (509).

9. The metal casting surface polishing equipment according to claim 8, characterized in that: A mounting ring (418) is fixedly connected to the surface of the mounting tube (416), a guide rod (417) is fixedly connected to the bottom of the mounting ring (418), and the lower end of the guide rod (417) is in contact with the surface of the adjacent mounting block (406).

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