An automatic double-sided blasting machine

Abstract

This application relates to the field of sandblasting equipment technology, and provides an automatic flipping sandblasting machine, which includes a worktable, a rotating disk, a positioning component, a first sandblasting component, a flipping component, and a second sandblasting component. The rotating disk is rotatably connected to the worktable, and the axis of rotation of the rotating disk is vertical. The positioning component is disposed on the rotating disk and distributed at intervals along the circumference of the rotating disk, and the positioning component is used to position the workpiece. The first sandblasting component, the flipping component, and the second sandblasting component are arranged sequentially along the rotation direction of the rotating disk. The first sandblasting component is used to sandblast the outer wall of the workpiece, the flipping component is used to flip the workpiece, and the second sandblasting component is used to sandblast the inner cavity of the flipped workpiece. This application has the effect of facilitating the flipping of workpieces and sandblasting of both the inner and outer walls.

Description

Technical Field

[0001] This application relates to the field of sandblasting equipment technology, and in particular to an automatic flipping sandblasting machine. Background Technology

[0002] Sandblasting is a process that roughens the surface of a workpiece by using the impact of a high-speed stream of sand. Automatic sandblasting machines are used when sandblasting metal parts (such as steel columns, steel plates, and titanium plates).

[0003] Sandblasting machines are commonly used equipment for sandblasting treatments. Powered by compressed air, the working pressure built up in the abrasive tank forces the abrasive through the outlet valve into the blasting pipe, which then propels the abrasive at high speed through the spray gun onto the surface being processed, improving its surface quality and altering its appearance or shape. Sandblasting can achieve a certain level of cleanliness and varying roughness on the workpiece surface, improving its mechanical properties. This enhances fatigue resistance, increases adhesion between the workpiece and coatings, and extends the durability of the coating film.

[0004] In the prior art, a sandblasting machine with a liftable nozzle includes a frame, a worktable, and a spray gun. The frame is equipped with a sandblasting chamber and a sand box. The spray gun is located inside the sandblasting chamber. A drive cylinder is provided on the sandblasting chamber. The spray gun is mounted on the piston rod end of the drive cylinder. The drive cylinder drives the spray gun to move in a direction perpendicular to the worktable.

[0005] like Figure 1 The metal workpiece shown is cylindrical, with a cavity 100 extending through its interior. A fixed post 200 is integrally connected within the cavity, positioned along the axial direction of the workpiece. The end of the fixed post has an insertion hole 300. When sandblasting the metal workpiece, the fixed post is typically inserted into the insertion hole on a worktable and clamped using pneumatic grippers; then, the outer surface of the workpiece is sandblasted. However, existing sandblasting machines can only sandblast the outer surface of the workpiece and cannot flip it over. The inner surface of the workpiece, where the cavity is located, needs to be manually flipped before another sandblasting, resulting in low production efficiency and requiring improvement. Utility Model Content

[0006] To facilitate the flipping of workpieces and the completion of sandblasting operations on the outer and inner walls, this application provides an automatic flipping sandblasting machine.

[0007] The automatic flipping sandblasting machine provided in this application adopts the following technical solution: An automatic flipping sandblasting machine includes a worktable, a rotating disk, a positioning component, a first sandblasting component, a flipping component, and a second sandblasting component. The rotating disk is rotatably connected to the worktable, and the axis of rotation of the rotating disk is vertical. The positioning component is disposed on the rotating disk and is distributed at intervals along the circumference of the rotating disk. The positioning component is used to position the workpiece. The first sandblasting component, the flipping component, and the second sandblasting component are arranged sequentially along the rotation direction of the rotating disk. The first sandblasting component is used to sandblast the outer wall of the workpiece, the flipping component is used to flip the workpiece, and the second sandblasting component is used to sandblast the inner cavity of the flipped workpiece.

[0008] By adopting the above technical solution, during production, the worker first places the metal workpiece to be sandblasted on a rotating disk and fixes its position using a positioning component, with the workpiece's cavity facing downwards. Then, the rotating disk is controlled to rotate a certain angle, bringing the workpiece to the area of ​​the first sandblasting component. At this point, the first sandblasting component performs sandblasting on the outer wall of the workpiece.

[0009] After the outer side of the workpiece is sandblasted, the rotary table continues to rotate the workpiece and moves it to the area of ​​the flipping assembly. The flipping assembly flips the workpiece up and down, so that the cavity of the workpiece faces upwards. Then, the rotary table moves the workpiece to the area of ​​the second sandblasting assembly, which sandblasts the inner wall of the workpiece. After flipping and two sandblasting operations, the sandblasting process on the entire upper, lower, inner, and outer sides of the metal workpiece is completed, achieving automated production and improving production efficiency.

[0010] Preferably, the flipping assembly includes a slide rail, a lifting seat, a lifting cylinder, a rotary cylinder, and a finger cylinder. The lifting seat is lifted and lowered on the slide rail. The lifting cylinder is connected to the lifting seat and is used to control the lifting seat to move up and down. The rotary cylinder is located on the lifting seat. The finger cylinder is located on the piston rod of the rotary cylinder and is used to clamp the workpiece on the positioning assembly. The rotary cylinder is used to drive the finger cylinder to rotate.

[0011] By adopting the above technical solution, during the flipping process, the lifting cylinder first controls the lifting seat to move downwards closer to the rotating disk, allowing the finger cylinder to clamp the workpiece on the positioning component. Then, the lifting cylinder controls the lifting seat to move vertically upwards, creating sufficient space between the finger cylinder and the rotating disk. Next, the rotary cylinder is activated, causing the finger cylinder and workpiece to rotate 180 degrees, changing the orientation of the workpiece. After the flip, the lifting seat is controlled to move downwards again, re-fixing the flipped workpiece onto the rotating disk for the second sandblasting operation.

[0012] Preferably, the lifting seat is connected to two finger cylinders, which are arranged side by side and both are located above the rotating disk.

[0013] By adopting the above technical solution, two finger cylinders correspond to two workpieces, enabling simultaneous flipping of two workpieces and improving production efficiency.

[0014] Preferably, the positioning component includes a positioning post and a pneumatic gripper. The positioning post is used for inserting the workpiece, and the pneumatic gripper is located on the periphery of the positioning post and is used to clamp the workpiece.

[0015] By adopting the above technical solution, before sandblasting, the operator first inserts the fixing post inside the workpiece cavity into the positioning post (the fixing post has a hole that mates with the positioning post), relying on static friction to achieve the pre-positioning of the workpiece, and then uses pneumatic grippers to further clamp the workpiece. Before the first sandblasting, the inner cavity of the workpiece is set downwards, and at this time, the pneumatic grippers exert a force on the inner wall of the cavity by expanding outwards; while after the workpiece is flipped and before the second sandblasting, the inner cavity of the workpiece is set upwards, and at this time, the pneumatic grippers exert a force on the outer wall of the workpiece by tightening inwards.

[0016] Preferably, the second sandblasting assembly includes a rotary motor, a connecting plate, a connecting rod, a swing rod, and several sandblasting guns. The rotary motor is mounted on the worktable, and the connecting plate is connected to the output shaft of the rotary motor. The rotary motor drives the connecting plate to rotate. The swing rod is rotatably connected to the worktable, and the sandblasting guns are mounted on the swing rod. One end of the connecting rod is connected to the swing rod, and the other end is connected to the connecting plate. The connecting rod drives the swing rod to rotate. The connecting plate has an arc-shaped hole and a through hole. The end of the connecting rod is connected to two parallel limiting posts, one of which is located in the arc-shaped hole, and the other limiting post passes through the through hole.

[0017] By adopting the above technical solution, the sandblasting gun can spray abrasive material onto the surface of a metal workpiece at a certain pressure and speed, thus achieving sandblasting. During the sandblasting process, the rotary motor can control the rotation of the rotating disk. The rotation of the rotating disk can drive the connecting rod to move up and down, and the connecting rod can then drive the swing rod to swing, thereby changing the position of the sandblasting gun relative to the workpiece. This facilitates sandblasting at different locations on the workpiece surface, improves the uniformity of sandblasting, and ensures the consistency of product quality.

[0018] Preferably, the first sandblasting component has the same composition as the second sandblasting component, and the first sandblasting component and the second sandblasting component are symmetrically distributed on the worktable.

[0019] By adopting the above technical solution, the first sandblasting component sandblasts the outer wall of the workpiece, and the second sandblasting component sandblasts the inner wall of the workpiece cavity, thus completing the sandblasting of both sides of the workpiece.

[0020] Preferably, the rotating disk is driven by a servo motor, and the rotating disk has clearance holes for sand to pass through.

[0021] By adopting the above technical solutions, the servo motor, relying on the closed-loop control principle and high-precision feedback mechanism, can accurately control the rotation angle. The servo system monitors the operating status in real time through closed-loop feedback (such as encoders and gratings), and combined with advanced algorithms such as PID, can accurately control the three major parameters: position, speed, and torque. During sandblasting, sand accumulates on the rotating disk; the design of the clearance holes reduces sand accumulation on the rotating disk, facilitating subsequent collection and reuse of the sand.

[0022] Preferably, it further includes an air blowing assembly, which is disposed on the worktable and located above the rotating disk. The air blowing assembly includes an air pipe and a jet gun. The air pipe is connected to an external air supply device, and the jet gun is spaced apart on the air pipe and is used to spray air onto the surface of the rotating disk.

[0023] By adopting the above technical solution, the blowing force generated by the air blowing component can blow the sand off the rotating disk. The sand falls into the collection box below the rotating disk and is then recycled and reused by the action of the pump.

[0024] In summary, this application includes at least one of the following beneficial technical effects: (1) By setting up a first sandblasting component, a flipping component and a second sandblasting component, the first sandblasting component sandblasts the outer wall of the workpiece. After one sandblasting is completed, the flipping component controls the workpiece to flip. Then the second sandblasting component sandblasts the inner wall of the workpiece. In this way, the processing of the upper and lower inner and outer sides of the workpiece is completed, thereby improving production efficiency.

[0025] (2) By setting clearance holes on the rotating disk, the design of clearance holes can reduce the accumulation of sand on the rotating disk, making it convenient for subsequent collection and reuse of sand.

[0026] (3) By setting up an air blowing component, the blowing force generated by the air blowing component can blow the sand off the rotating disk, making it convenient for the sand to be collected into a designated container for recycling, thus realizing the recycling of sand. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a metal workpiece in the background art of this application; Figure 2 This is a structural schematic diagram of a metal workpiece from another perspective in the background art of this application; Figure 3 This is a schematic diagram of the automatic flipping sandblasting machine in the embodiments of this application; Figure 4This is a top view of the automatic flipping sandblasting machine in the embodiments of this application; Figure 5 This is an exploded view of the workpiece and positioning assembly in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the flipping component in an embodiment of this application; Figure 7 This is a partial structural schematic diagram of the automatic flipping sandblasting machine in the embodiments of this application; Figure 8 yes Figure 7 An enlarged schematic diagram of part A in the middle.

[0028] Reference numerals: 1. Worktable; 2. Rotary disk; 3. Positioning assembly; 31. Positioning post; 32. Pneumatic gripper; 4. First sandblasting assembly; 5. Tilting assembly; 51. Slide rail; 52. Lifting seat; 53. Lifting cylinder; 54. Rotary cylinder; 55. Finger cylinder; 6. Second sandblasting assembly; 61. Rotary motor; 62. Connecting disk; 63. Connecting rod; 64. Swing rod; 65. Sandblasting gun; 7. Triangular block; 8. Limiting post; 9. Arc-shaped hole; 10. Through hole; 11. Air blowing assembly; 111. Air pipe; 112. Air gun; 12. Clearance hole. Detailed Implementation

[0029] The technical solutions of this application will now be described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can be embodied in many different forms and is not limited to the embodiments described herein.

[0030] In the representation of this application, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0032] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection; a detachable connection; an integral part; or a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0033] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Without conflict, those skilled in the art can combine and integrate the different embodiments or examples shown in this application, as well as the features of those embodiments or examples.

[0034] This application discloses an automatic flipping sandblasting machine. (Refer to...) Figure 3 and Figure 4 The automatic flipping sandblasting machine includes a worktable 1, a rotating disk 2, a positioning component 3, a first sandblasting component 4, a flipping component 5, and a second sandblasting component 6. The worktable 1 serves as a carrier and is fixedly placed on the ground. The rotating disk 2 is rotatably connected to the worktable 1 via a servo motor, and the axis of rotation of the rotating disk 2 is vertical. Several positioning components 3 are mounted on the rotating disk 2, spaced apart circumferentially along the rotating disk 2, and are used to position the metal workpiece. The first sandblasting component 4, the flipping component 5, and the second sandblasting component 6 are arranged sequentially along the rotation direction of the rotating disk 2. The first sandblasting component 4 is used to sandblast the outer wall of the workpiece, the flipping component 5 is used to flip the workpiece after one sandblasting cycle, and the second sandblasting component 6 is used to sandblast the inner cavity of the flipped workpiece.

[0035] During production, the worker first places the metal workpiece to be sandblasted on the rotating disk 2 and fixes its position using the positioning component 3, with the cavity of the workpiece facing downwards. Then, the rotating disk 2 is controlled to rotate a certain angle, so that the workpiece comes to the area of ​​the first sandblasting component 4. At this time, the first sandblasting component 4 is used to sandblast the outer wall of the workpiece.

[0036] After the outer side of the workpiece is sandblasted, the rotary disk 2 continues to rotate the workpiece and moves it to the area of ​​the flipping component 5. The flipping component 5 flips the workpiece up and down, so that the cavity of the workpiece faces upward. Then, the rotary disk 2 moves the workpiece to the area of ​​the second sandblasting component 6, which sandblasts the inner wall of the workpiece. After flipping and two sandblasting operations, the sandblasting process of the entire inner and outer sides of the metal workpiece is completed, realizing automated production and improving production efficiency.

[0037] Reference Figure 5Specifically, the positioning component 3 includes a positioning post 31 and a pneumatic gripper 32. The positioning post 31 is used for inserting the workpiece. The pneumatic gripper 32 is installed around the positioning post 31 and is used to clamp the workpiece. Before sandblasting, the operator first inserts the fixed post inside the workpiece cavity into the positioning post 31 (the fixed post has an insertion hole that mates with the positioning post 31), and uses static friction to achieve the pre-positioning of the workpiece. Then, the pneumatic gripper 32 is used to further clamp the workpiece. Before the first sandblasting, the inner cavity of the workpiece is set downwards. At this time, the pneumatic gripper 32 exerts a force on the inner wall of the cavity by expanding outwards. Before the second sandblasting after the workpiece is flipped over, the inner cavity of the workpiece is set upwards. At this time, the pneumatic gripper 32 exerts a force on the outer wall of the workpiece by tightening inwards, thus achieving the clamping action.

[0038] Reference Figure 6 The flipping assembly 5 includes a slide rail 51, a lifting seat 52, a lifting cylinder 53, a rotary cylinder 54, and a finger cylinder 55. The slide rail 51 is vertically arranged and fixedly connected to the worktable 1. The lifting seat 52 is slidably connected to the slide rail 51 and moves vertically up and down. The lifting cylinder 53 is connected to the lifting seat 52 and is used to control the up and down movement of the lifting seat 52. The cylinder has a stroke control mechanism, which can control the cylinder piston rod to stop at a predetermined position to achieve precise mechanical actions (such as clamping, pushing, lifting, etc.) and provide continuous, stable, and reliable pressure. Typical stroke control mechanisms include, but are not limited to, mechanical stops, magnetic switches with solenoid valves, and displacement sensors with controllers. These are existing technologies and will not be described in detail here.

[0039] A rotary cylinder 54 is fixedly mounted on a lifting base 52. A finger cylinder 55 is connected to the piston rod of the rotary cylinder 54. The finger cylinder 55 is used to clamp the workpiece on the positioning assembly 3, and the rotary cylinder 54 is used to drive the finger cylinder 55 to rotate. The rotation axis of the finger cylinder 55 is horizontal. In this embodiment, two rotary cylinders 54 are mounted on the lifting base 52, and one finger cylinder 55 is connected to each of the two rotary cylinders 54. The two finger cylinders 55 are arranged side by side and are both located above the rotating disk 2.

[0040] During the flipping process, the lifting cylinder 53 first controls the lifting seat 52 to move down closer to the rotating disk 2, allowing the finger cylinder 55 to clamp the workpiece on the positioning assembly 3. Then, the lifting cylinder 53 controls the lifting seat 52 to move vertically upward, creating sufficient space between the finger cylinder 55 and the rotating disk 2. Next, the rotary cylinder 54 is activated, causing the finger cylinder 55 and the workpiece to flip 180 degrees, changing the orientation of the workpiece. After the flip, the lifting seat 52 is lowered again to re-fix the flipped workpiece onto the rotating disk 2 for the second sandblasting operation.

[0041] Reference Figure 7 and Figure 8The first sandblasting assembly 4 has the same composition as the second sandblasting assembly 6. The second sandblasting assembly 6 includes a rotary motor 61, a connecting plate 62, a connecting rod 63, a swing rod 64, and several sandblasting guns 65. The rotary motor 61 is fixedly mounted on the worktable 1. The connecting plate 62 is connected to the output shaft of the rotary motor 61. The rotary motor 61 drives the connecting plate 62 to rotate, and the shaft of the connecting plate 62 rotates horizontally. The swing rod 64 is rotatably connected to the worktable 1 and is located below the rotary motor 61. The sandblasting guns 65 are mounted on the swing rod 64 and are used to sandblast the workpieces on the rotating disk 2. One end of the connecting rod 63 is connected to the swing rod 64, and the other end is connected to the connecting plate 62. The connecting rod 63 drives the swing rod 64 to rotate. The connecting plate 62 has an arc-shaped hole 9 and a through hole 10. A triangular block 7 is fixedly connected to the end of the connecting rod 63. Two parallel limiting posts 8 are fixedly connected to the triangular block 7. One limiting post 8 is located in the arc-shaped hole 9, and the other limiting post 8 passes through the through hole 10.

[0042] The sandblasting gun 65 can spray abrasive material onto the surface of a metal workpiece at a certain pressure and speed to achieve sandblasting. During the sandblasting process, the rotary motor 61 can control the rotating disk 2 to rotate. The rotation of the rotating disk 2 can drive the connecting rod 63 to move up and down. The connecting rod 63 then drives the swing rod 64 to swing, thereby changing the position of the sandblasting gun 65 relative to the workpiece. This facilitates sandblasting at different locations on the workpiece surface, improves the uniformity of sandblasting, and ensures the consistency of product quality.

[0043] In addition, an air blowing assembly 11 is installed on the workbench 1. The air blowing assembly 11 is located above the rotating disk 2 and is used to blow away the sand on the rotating disk 2. The air blowing assembly 11 includes an air pipe 111 and an air gun 112. The air pipe 111 is horizontally arranged, with one end closed and the other end connected to an external air supply device. The air guns 112 are spaced apart on the air pipe 111, with the nozzles facing the rotating disk 2. The air guns 112 are used to spray air onto the surface of the rotating disk 2. The rotating disk 2 also has clearance holes 12 for the sand to pass through. The blowing force generated by the air blowing assembly 11 can blow away the sand on the rotating disk 2. The sand falls into a collection box below the rotating disk 2 and is then recovered and recycled by a pump.

[0044] The implementation principle of an automatic flipping sandblasting machine according to an embodiment of this application is as follows: During production, the operator first places the metal workpiece to be sandblasted on the rotating disk 2, and uses the positioning component 3 to fix the position of the workpiece, with the cavity of the workpiece facing downwards. Then, the rotating disk 2 is controlled to rotate circumferentially by a certain angle, so that the workpiece comes to the area where the first sandblasting component 4 is located. At this time, the first sandblasting component 4 is used to perform sandblasting operation on the outer wall of the workpiece.

[0045] After the outer side of the workpiece is sandblasted, the rotary disk 2 continues to rotate the workpiece and moves it to the area of ​​the flipping component 5. The flipping component 5 flips the workpiece up and down, so that the cavity of the workpiece faces upward. Then, the rotary disk 2 moves the workpiece to the area of ​​the second sandblasting component 6, which sandblasts the inner wall of the workpiece. After flipping and two sandblasting operations, the sandblasting process of the entire metal workpiece on both the upper and lower, inner and outer sides is completed, realizing automated production and improving production efficiency.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic turn and blast machine characterized by, The assembly includes a worktable (1), a rotating disk (2), a positioning component (3), a first sandblasting component (4), a flipping component (5), and a second sandblasting component (6). The rotating disk (2) is rotatably connected to the worktable (1), and the axis of rotation of the rotating disk (2) is vertical. The positioning component (3) is located on the rotating disk (2) and is distributed at intervals along the circumference of the rotating disk (2). The positioning component (3) is used to position the workpiece. The first sandblasting component (4), the flipping component (5), and the second sandblasting component (6) are arranged sequentially along the rotation direction of the rotating disk (2). The first sandblasting component (4) is used to sandblast the outer wall of the workpiece, the flipping component (5) is used to flip the workpiece, and the second sandblasting component (6) is used to sandblast the inner cavity of the flipped workpiece.

2. The automatic turn-over sandblasting machine according to claim 1, characterized in that, The flipping assembly (5) includes a slide rail (51), a lifting seat (52), a lifting cylinder (53), a rotary cylinder (54), and a finger cylinder (55). The lifting seat (52) is lifted and lowered on the slide rail (51). The lifting cylinder (53) is connected to the lifting seat (52) and is used to control the lifting seat (52) to move up and down. The rotary cylinder (54) is located on the lifting seat (52). The finger cylinder (55) is located on the piston rod of the rotary cylinder (54) and is used to clamp the workpiece on the positioning assembly (3). The rotary cylinder (54) is used to drive the finger cylinder (55) to rotate.

3. An automatic turn-over sandblasting machine according to claim 2, characterized in that, The lifting seat (52) is connected to two finger cylinders (55), which are arranged side by side and are both located above the rotating disk (2).

4. An automatic flipping sandblasting machine according to claim 1, characterized in that, The positioning component (3) includes a positioning post (31) and a pneumatic gripper (32). The positioning post (31) is used for inserting the workpiece, and the pneumatic gripper (32) is located on the periphery of the positioning post (31) and is used to clamp the workpiece.

5. The automatic turn-over sandblasting machine according to claim 1, wherein, The second sandblasting assembly (6) includes a rotary motor (61), a connecting plate (62), a connecting rod (63), a swing rod (64), and several sandblasting guns (65). The rotary motor (61) is mounted on the worktable (1), and the connecting plate (62) is connected to the output shaft of the rotary motor (61). The rotary motor (61) is used to drive the connecting plate (62) to rotate. The swing rod (64) is rotatably connected to the worktable (1), and the sandblasting guns (65) are mounted on the swing rod. On the moving rod (64); one end of the connecting rod (63) is connected to the swing rod (64), and the other end is connected to the connecting plate (62). The connecting rod (63) is used to drive the swing rod (64) to rotate. The connecting plate (62) is provided with an arc-shaped hole (9) and a through hole (10). The end of the connecting rod (63) is connected to two parallel limiting posts (8). One of the limiting posts (8) is located in the arc-shaped hole (9), and the other limiting post (8) passes through the through hole (10).

6. An automatic flipping sandblasting machine according to claim 1, characterized in that, The first sandblasting component (4) has the same composition as the second sandblasting component (6), and the first sandblasting component (4) and the second sandblasting component (6) are symmetrically distributed on the worktable (1).

7. The automatic turn-over sandblasting machine according to claim 1, wherein The rotating disk (2) is driven by a servo motor, and the rotating disk (2) has a clearance hole (12) for sand to pass through.

8. An automatic turn-over sandblasting machine according to claim 7, characterized in that, It also includes an air blowing assembly (11), which is disposed on the worktable (1) and located above the rotating disk (2). The air blowing assembly (11) includes an air pipe (111) and a jet gun (112). The air pipe (111) is connected to an external air supply device, and the jet gun (112) is spaced on the air pipe (111) and is used to spray air onto the surface of the rotating disk (2).

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