Workpiece spraying device

Abstract

The present invention relates to a workpiece spraying device, comprising: a bracket; a fixed component, rotatably arranged on the bracket, the fixed component comprising a first fixed plate and a second fixed plate arranged opposite to each other, a plurality of first clamps are arranged on the first fixed plate, a plurality of second clamps are arranged on the second fixed plate, the first clamps and the second clamps are respectively used to clamp the two ends of the workpiece, and each workpiece annular disk is arranged on the fixed component; a spraying part, used to spray the workpiece, when the fixed component rotates, each workpiece is opposite to the spraying part in turn; the first clamp is rotatably arranged on the first fixed plate, the second clamp is rotatably arranged on the second fixed plate, and one of the first clamp and the second clamp is connected to a rotating motor. Multiple workpieces to be sprayed can be installed on the fixed component at the same time, and the rotating fixed component can align each workpiece with the spraying part in turn to spray the workpiece. When the spraying object is replaced, there is no need to disassemble the workpiece and then install a new workpiece, which greatly improves the spraying efficiency and reduces the production cost.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, in particular to a workpiece spraying device. Background Art

[0002] Traditional target production mainly adopts the workpiece moving or spray gun moving method, using plasma spraying equipment to melt powder and deposit it on the rotating workpiece installed on the lathe through high-speed flame flow to form the target. Each spraying can only produce one, and then it has to be disassembled and replaced with the workpiece. For the production of targets with short spraying time and thin coating, a lot of installation and disassembly time is wasted, which is not only extremely inefficient, but also seriously increases production costs. Summary of the invention

[0003] Based on this, it is necessary to provide a workpiece spraying device to address the above problems, which can avoid disassembly and installation of the workpiece when changing the spraying object, improve spraying efficiency and reduce production costs.

[0004] A workpiece spraying device, comprising:

[0005] Bracket;

[0006] A fixing assembly is rotatably arranged on the bracket, the fixing assembly comprises a first fixing plate and a second fixing plate which are arranged opposite to each other, a plurality of first clamps are arranged on the first fixing plate, a plurality of second clamps are arranged on the second fixing plate, the first clamps and the second clamps are respectively used to clamp two ends of a workpiece, and each of the workpiece annular disks is arranged on the fixing assembly;

[0007] A spraying part, which is arranged on one side of the fixed component and is used to spray the workpieces. When the fixed component rotates, each of the workpieces is opposite to the spraying part in turn;

[0008] The first clamp is rotatably disposed on the first fixing plate, the second clamp is rotatably disposed on the second fixing plate, and one of the first clamp and the second clamp is connected to a rotating motor.

[0009] In the above-mentioned workpiece spraying device, multiple workpieces to be sprayed can be installed simultaneously on the fixed component through the first clamp and the second clamp. Any of the first fixed plate and the second fixed plate can be connected to a rotating motor to rotate the workpiece, and the workpiece can be sprayed in cooperation with the spray part. The rotating fixed component can align each workpiece with the spray part in turn to spray the workpiece. When changing the spraying object, there is no need to disassemble the workpiece and then install a new workpiece, which greatly improves the spraying efficiency and reduces production costs.

[0010] In one embodiment, the rotating motor is arranged on the second fixed plate, and an output chuck is arranged on the rotating motor, and the output chuck passes through the second fixed plate and is connected to the second fixture. Each rotating motor is respectively connected to a main control module, and the main control module can control the start and speed of each rotating motor respectively. When a workpiece is sprayed, only the rotating motor corresponding to the workpiece works to avoid waste of power resources. The rotating motor drives the second fixture to rotate through the output chuck, and the second fixture rotates synchronously with the workpiece and the first fixture.

[0011] In one embodiment, the second fixing plate is provided with a main motor, which is coaxially arranged with the second fixing plate and used to drive the fixing assembly to rotate. The main motor is coaxially arranged with the second fixing plate and used to drive the second fixing plate to rotate. The second fixing plate is connected to the first fixing plate through a dust-proof plate, so that the fixing assembly rotates as a whole, thereby achieving the purpose of switching workpieces.

[0012] In one embodiment, the main motor is provided with a slip ring, and the slip ring is electrically connected to each of the rotating motors through a brush. The arrangement of the slip ring and the brush simplifies the line distribution to the greatest extent while realizing the electrical connection of each motor to the main control module, saving line cost and space.

[0013] In one embodiment, a dust suction pipe is provided between the first fixing plate and the second fixing plate, and a plurality of dust suction ports are provided on the side wall of the dust suction pipe, and the bracket comprises: a frame body, a suction pipe provided on the frame body, and a rotating connector provided on the suction pipe; a connecting pipe is provided on one side of the first fixing plate close to the suction pipe, and a matching joint matching with the rotating connector is provided on the connecting pipe, and two ends of the matching pipe are respectively connected to the suction pipe and the dust suction pipe. The dust suction pipe is used to absorb flying and falling powder when the workpiece is sprayed.

[0014] In one embodiment, a cooling assembly is provided on one side of the first fixed plate close to the air intake pipe, and the cooling assembly includes a cooling head and a bearing provided on the first fixed plate, the bearing is connected to the first fixture, the cooling head passes through the bearing and communicates with the workpiece with the first fixture, and the cooling head is connected with a water inlet pipe and a drain pipe, and the water inlet pipe is used to input cooling water into the workpiece. When spraying a workpiece, the valves of the water inlet pipe and the drain pipe on the corresponding cooling head are opened, and the water inlet pipe continuously inputs cooling water to the cooling head, and the cooling water enters the workpiece, fills the workpiece and flows out from the drain pipe, so that the workpiece is always filled with cooling water at a lower temperature, and the workpiece is sprayed and cooled.

[0015] In one embodiment, one end of the water inlet pipe is connected to the cooling head, and the other end is connected to the mating joint; one end of the drain pipe is connected to the cooling head, and the other end is connected to the mating joint; the rotary connector is provided with a main water inlet pipe and a main water outlet pipe, and the rotary connector is connected to the inside of the mating joint. The main water inlet pipe is connected to an external water source, and the cooling water is output to the mating joint through the rotary connector, and the mating joint inputs the cooling water into the water inlet pipe of the open valve. The water discharged from the drain pipe flows to the rotary connector through the mating joint, and is output from the main water outlet pipe. Integrating the water inlet pipe and the water outlet pipe on the mating joint greatly simplifies the pipeline setting and saves the setting space of the pipeline.

[0016] In one embodiment, the cooling head is provided with a quick air inlet pipe and a quick drain pipe, and the quick air inlet pipe is used to supply air into the workpiece to drain the cooling water from the quick drain pipe. After the spraying of a workpiece is completed, the drain pipe cannot quickly drain the cooling water in the workpiece. The quick air inlet pipe will quickly fill the workpiece with gas through the cooling head, and drain the water in the workpiece from the quick drain pipe, so as to avoid residual cooling water in the workpiece after spraying.

[0017] In one embodiment, the fixing assembly further comprises: a plurality of dust-shielding plates arranged between the first fixing plate and the second fixing plate, wherein the dust-shielding plates separate two adjacent workpieces. The dust-shielding plates separate the workpieces to prevent the workpieces from contaminating other workpieces during spraying, and at the same time connect the first fixing plate and the second fixing plate.

[0018] In one embodiment, the workpiece spraying device further includes: a coating thickness gauge, and the coating thickness gauge and the spraying part are arranged on the same side of the fixed component. The coating thickness gauge detects the spraying thickness on the workpiece surface through a distance sensor. The distance sensor can be a light sensor, an ultrasonic sensor, etc. The coating thickness gauge detects the distance between itself and the workpiece surface in real time. When the distance reaches a preset distance, it means that the coating thickness on the workpiece surface meets the spraying requirements. The main control module will stop feeding powder to the spraying part and stop spraying the workpiece. The coating thickness gauge can move horizontally to detect the spraying thickness of each displacement on the workpiece.

[0019] In one of the embodiments, a slideway is provided at the bottom of the bracket, and the bracket can slide on the slideway along the axial direction of the fixing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a workpiece spraying device in one embodiment;

[0021] Figure 2 It is a structural schematic diagram of the connection between the main motor and the rotating motor of the workpiece spraying device in one embodiment.

[0022] Among them: 1. bracket; 2. fixing assembly; 3. spraying part; 4. first fixing plate; 5. second fixing plate; 6. first fixture; 7. second fixture; 8. workpiece; 9. rotating motor; 10. main motor; 11. collector ring; 12. brush; 13. slideway; 14. dust shield; 15. dust suction pipe; 16. suction pipe; 17. rotating connector; 18. connecting pipe; 19. matching connector; 20. cooling head; 21. bearing; 22. water inlet pipe; 23. drain pipe; 24. quick air inlet pipe; 25. quick drain pipe; 26. coating thickness gauge; 27. output chuck; 28. main water inlet pipe; 29. ​​main water outlet pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] A first embodiment of the present invention relates to a workpiece spraying device for spraying a workpiece.

[0027] like Figure 1As shown, the workpiece spraying device in this embodiment includes: a bracket 1, a fixed component 2 arranged on the bracket 1, a spraying part 3, and a main control module. The fixed component 2 includes two first fixed plates 4 and a second fixed plate 5 arranged opposite to each other. A plurality of first clamps 6 are arranged in a circle on the first fixed plate 4, and a plurality of second clamps 7 are arranged in a circle on the second fixed plate 5. The first clamps 6 correspond to the second clamps 7 and are used to clamp the workpiece 8. The fixed component 2 can clamp multiple workpieces 8 at the same time, and each workpiece 8 is arranged in a ring on the fixed component 2. The fixed component 2 can rotate on the bracket 1, and the spraying part 3 is arranged on one side of the fixed component 2, and the workpiece 8 corresponding to the fixed component 2 can be sprayed. In this embodiment, the spraying part 3 is a plasma spray gun. Of course, under different product requirements and different spraying processes, the spraying part 3 can also choose other spray guns. The main control device controls the powder bin to supply powder to the spraying part 3, and then controls the spraying part 3 to spray the workpiece 8. After spraying, the workpiece 8 corresponding to the spraying part 3 can be switched by rotating the fixed component 2. The fixed component 2 can be rotated manually or driven by a motor. Rotating the fixed component 2 can realize the sequential spraying of each workpiece 8, eliminating the steps of disassembling and reinstalling the workpiece 8, greatly saving time and improving the spraying efficiency.

[0028] The first clamp 6 is rotatably disposed on the first fixed plate 4, and the second clamp 7 is rotatably disposed on the second fixed plate 5. The first clamp 6 or the second clamp 7 is connected to a rotating motor 9, so that the clamped workpiece 8 can be rotated, which is convenient for the spraying process. The rotating motor 9 can be disposed on either the first fixed plate 4 or the second fixed plate 5. In this embodiment, the rotating motor 9 is disposed on the second fixed plate 5 as an example for illustration. In other embodiments, the rotating motor 9 can also be disposed on the first fixed plate 4. The rotating motor 9 can drive the second clamp 7, the workpiece 8 and the first clamp 6 to rotate. When the workpiece 8 is sprayed, since the spraying part 3 is fixed, the rotation of the workpiece 8 can make the surface of the workpiece 8 sprayed evenly.

[0029] It is also worth noting that a slide 13 is provided at the bottom of the bracket 1. The bracket 1 can slide along the axis direction of the fixing component 2 on the slide, thereby driving the workpiece 8 to move in the length direction. The spraying part 3 can also move horizontally under the control of the main control module, so that the spraying part 3 can be fixed to spray various positions on the workpiece 8. When spraying a workpiece 8, the sprayed powder can splash or fall on other workpieces 8. A dust isolation plate 14 is also provided between the first fixing plate 4 and the second fixing plate 5. The dust isolation plate 14 separates each workpiece 8 to prevent the workpiece 8 from causing contamination to other workpieces 8 during spraying, and connects the first fixing plate 4 and the second fixing plate 5 at the same time.

[0030] The workpiece 8 is fixed between the first fixed plate 4 and the second fixed plate 5. A plurality of rotating motors 9 are arranged on the outer side of the second fixed plate 5. Each rotating motor 9 corresponds to each second fixture 7 one by one. The rotating motor 9 is provided with an output chuck 27. The output chuck 27 penetrates the second fixed plate 5 and connects to the second fixture 7. Each rotating motor 9 is connected to the main control module respectively. The main control module can control the start and speed of each rotating motor 9 respectively. When a workpiece 8 is sprayed, only the rotating motor 9 corresponding to the workpiece 8 works to avoid the waste of power resources. The rotating motor 9 drives the second fixture 7 to rotate through the output chuck 27. The second fixture 7 rotates synchronously with the workpiece 8 and the first fixture 6.

[0031] The second fixing plate 5 is also provided with a main motor on the outside. The main motor is coaxially arranged with the second fixing plate 5 and is used to drive the second fixing plate 5 to rotate. The second fixing plate 5 is connected to the first fixing plate 4 via a dust shield 14, so that the fixing assembly 2 rotates as a whole, thereby achieving the purpose of switching the workpiece 8. Figure 2 The main motor is provided with a collector ring 11 connected to the main control module, and the collector ring 11 is connected to a plurality of brushes 12, and each brush 12 is respectively connected to each rotating motor 9. While realizing the electrical connection of each motor to the main control module, the line distribution is simplified to the greatest extent, saving line cost and space.

[0032] A dust suction pipe 15 is provided between the first fixing plate 4 and the second fixing plate 5. The dust suction pipe 15 is coaxial with the first fixing plate 4 and the second fixing plate 5 and is used to absorb the flying and falling powders when the workpiece 8 is sprayed. A plurality of dust suction ports are provided on the peripheral side of the dust suction pipe 15. The bracket 1 comprises: a frame body and a suction pipe 16 provided on the frame body. The suction pipe 16 is connected to a dust collector and is used to connect the dust suction pipe 15 to absorb and clean the powders generated during the spraying process. It is worth noting that the dust suction pipe 15 is arranged between the second fixed plate 5 and the first fixed plate 4, and can rotate with the fixed component 2, while the suction pipe 16 is fixed on the frame; the suction pipe 16 is provided with a rotating connector 17, the first fixed plate 4 is provided with a connecting pipe 18, and the connecting pipe 18 is provided with a matching joint 19 that cooperates with the rotating connector 17. One end of the connecting pipe 18 is rotatably connected to the suction pipe 16, and the other end is fixedly connected to the dust suction pipe 15. The connecting pipe 18 realizes the connection between the suction pipe 16 and the dust suction pipe 15, and at the same time allows the suction pipe 16 and the dust suction pipe 15 to rotate relative to each other.

[0033] When spraying the workpiece 8, the workpiece 8 needs to be cooled to ensure the spraying effect and improve the spraying efficiency. In this embodiment, a cooling component is provided on the side of the first fixed plate 4 close to the suction pipe 16, and the workpiece 8 is hollow. The cooling component can input cooling water into the workpiece 8 to cool the workpiece 8. The cooling component includes: a cooling head 20 and a bearing 21 provided on the first fixed plate 4, the bearing 21 is connected to the first fixture 6, the first fixture 6 is hollow, the cooling head 20 passes through the bearing 21 and the first fixture 6 to communicate with the workpiece 8, the first fixture 6 is connected to the bearing 21, so that the first fixture 6 can rotate relative to the first fixed plate 4, when spraying a workpiece 8, the workpiece 8, the first fixture 6 and the second fixture 7 rotate, and the cooling head 20 is fixed to the first fixed plate 4 and the second fixed plate 5.

[0034] The cooling head 20 is connected with a water inlet pipe 22 and a drain pipe 23. Both the water inlet pipe 22 and the drain pipe 23 are provided with valves. The valves may be manual valves or electric valves electrically connected to the main control module. In this embodiment, the electric valve is taken as an example and is not specifically limited. When spraying a workpiece 8, the valves of the water inlet pipe 22 and the drain pipe 23 on the corresponding cooling head 20 are opened, and the water inlet pipe 22 continuously inputs cooling water to the cooling head 20. The cooling water enters the workpiece 8, fills the workpiece 8 and flows out from the drain pipe 23, so that the workpiece 8 is always filled with cooling water at a relatively low temperature, and the workpiece 8 is sprayed and cooled.

[0035] One end of the water inlet pipe 22 is connected to the cooling head 20, and the other end is connected to the matching joint 19. One end of the drain pipe 23 is connected to the cooling head 20, and the other end is connected to the matching joint 19. The rotary connector 17 is provided with a main water inlet pipe 28 and a main water outlet pipe 29, and the rotary connector 17 is connected to the inside of the matching joint 19. The main water inlet pipe 28 is connected to the external water source, and the cooling water is output to the matching joint 19 through the rotary connector 17, and the matching joint 19 inputs the cooling water into the water inlet pipe 22 of the open valve. The water discharged from the drain pipe 23 flows to the rotary connector 17 through the matching joint 19, and is output from the main water outlet pipe 29. Integrating the water inlet pipe 22 and the water outlet pipe on the matching joint 19 greatly simplifies the pipeline setting and saves the pipeline setting space.

[0036] After the spraying of a workpiece 8 is completed, the drain pipe 23 cannot quickly drain the cooling water in the workpiece 8. The cooling head 20 is also provided with a quick air inlet pipe 24 and a quick drain pipe 25. The quick air inlet pipe 24 and the quick drain pipe 25 are both provided with electric valves connected to the main control module. After the spraying of the workpiece 8 is completed, the main control module closes the valves of the water inlet pipe 22 and the drain pipe 23 on the corresponding cooling head 20, and opens the electric valves of the quick air inlet pipe 24 and the quick drain pipe 25. The quick air inlet pipe 24 will quickly fill the workpiece 8 with gas through the cooling head 20, and the water in the workpiece 8 will be discharged from the quick drain pipe 25, so as to avoid the cooling water remaining inside the workpiece 8 after the spraying. The quick air inlet pipe 24 on each cooling head 20 is connected to the main air outlet device, and the quick drain pipe 25 on each cooling head 20 is connected to the main drain box, which greatly saves the cost and space of inflation and drainage. After the spraying of a workpiece 8 is completed, the main control module opens the quick air inlet pipe 24 and the quick drain pipe 25 on the corresponding cooling head 20 for quick drainage.

[0037] The workpiece 8 spraying device also includes: a coating thickness gauge 26, the coating thickness gauge 26 is electrically connected to the main control module, the coating thickness gauge 26 and the spraying part 3 are arranged on the same side of the fixed component 2, and the coating thickness gauge 26 is used to detect the spraying thickness of the surface of the workpiece 8 in real time when the spraying part 3 sprays the workpiece 8, and transmit the detection result to the main control module. The coating thickness gauge 26 detects the spraying thickness of the surface of the workpiece 8 through a distance sensor. The distance sensor can be an optical sensor, an ultrasonic sensor, etc. The coating thickness gauge 26 detects the distance between itself and the surface of the workpiece 8 in real time. When the distance reaches a preset distance, it means that the coating thickness on the surface of the workpiece 8 meets the spraying requirements, and the main control module will stop feeding powder to the spraying part 3 and stop spraying the workpiece 8. The coating thickness gauge 26 can move horizontally to detect the spraying thickness of each displacement on the workpiece 8.

[0038] The workpiece 8 spraying device also includes: a control panel, a control panel and a main control module. The control panel is for manual operation. Workers can use the control panel to turn on each rotating motor 9, electric valve, and suction pipe 16. They can also set the flow rate of cooling water and the speed of the rotating motor 9 to maximize the spraying efficiency. At the same time, it is convenient to correct errors in time at the spraying site and improve the qualified rate of the workpiece 8 spraying.

[0039] When spraying the workpiece 8, firstly, the two ends of the multiple workpieces 8 are respectively mounted with the first fixture 6 and the second fixture 7, the first fixture 6 is connected to the bearing 21 of the cooling assembly, and the second fixture 7 is connected to the output chuck 27, so that a workpiece 8 corresponds to the spraying part 3. The main control module opens the valves of the water inlet pipe 22 and the water outlet pipe on the cooling head 20 corresponding to the workpiece 8, passes the cooling water into the workpiece 8 for circulation, sets the cooling temperature parameters of the water, connects the suction pipe 16 and starts the dust removal. Adjust the distance between the spraying part 3 and the workpiece 8 to the optimal spraying distance, set the rotation parameters of the rotating motor 9 corresponding to the workpiece 8 on the control panel, set the spraying length and moving speed and start. The rotating motor 9 drives the workpiece 8 to rotate through the second fixture 7. The main control module turns on the plasma spray gun, so that the plasma spray gun reaches the power process parameters required for melting, and spraying can be carried out. The powder is transported to the spraying part 3 through the powder supply bin. The powder melts instantly through the flame coming out of the spraying part 3, and then the coating is deposited on the workpiece 8 through the automatic control of the spraying part 3 to form a coating. The unmelted powder or dust sprayed out is adsorbed by the dust suction pipe 15 behind the workpiece 8, and is sucked into the dust collector through the suction pipe 16 for filtration. When the coating thickness gauge 26 detects that the thickness of the surface of the workpiece 8 reaches the set thickness required by the product, an alarm is issued and displayed on the control panel. At this time, the main control module will send a command to the spraying part 3 to stop spraying, and control the powder supply bin to stop feeding powder. The main control module sends a command to the main motor 10 to rotate the main motor 10 to the angle of the next workpiece 8 and repeat the spraying. When spraying the next workpiece 8, close the electric valves on the water inlet pipe 22 and the water outlet pipe of the cooling head 20 corresponding to the previous workpiece 8, open the valves of the quick air inlet pipe 24 and the quick drain pipe 25, and let the compressed air enter the pipe of the workpiece 8 to discharge the cooling water, and close the valves of the quick air inlet pipe and the quick drain pipe 25. After the spraying of each workpiece 8 is completed in sequence, control the spraying part 3 to stop spraying, close the air intake pipe 16 and all the water inlet pipes 22, the drain pipe 23, the quick air inlet pipe 24 and the quick drain pipe 25, and remove each workpiece 8 from the fixing assembly 2 to complete the spraying of multiple workpieces 8.

[0040] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A workpiece spraying device, It is characterized in that include: A bracket, the bracket comprising a frame body, an air intake pipe arranged on the frame body, and a rotating connector arranged on the air intake pipe; A fixing assembly is rotatably arranged on the bracket, the fixing assembly comprises a first fixing plate and a second fixing plate which are arranged opposite to each other, a plurality of first clamps are arranged on the first fixing plate, and a plurality of second clamps are arranged on the second fixing plate, the first clamps and the second clamps are respectively used to clamp two ends of a workpiece, and each of the workpieces is arranged in a ring on the fixing assembly; A spraying part, which is arranged on one side of the fixed component and is used to spray the workpieces. When the fixed component rotates, each of the workpieces is opposite to the spraying part in turn; The first clamp is rotatably arranged on the first fixing plate, and the second clamp is rotatably arranged on the second fixing plate. A rotating motor is connected to one of the first clamp and the second clamp. The rotating motor is arranged on the second fixing plate, and an output chuck is arranged on the rotating motor. The output chuck passes through the second fixing plate and is connected to the second clamp. The second fixing plate is provided with a main motor, and the main motor is coaxially arranged with the second fixing plate to drive the fixing assembly to rotate. A dust suction pipe is arranged between the first fixing plate and the second fixing plate, and a plurality of side walls of the dust suction pipe are provided. A dust suction port, a connecting pipe is provided on the side of the first fixed plate close to the suction pipe, a mating joint that cooperates with the rotating connecting head is provided on the connecting pipe, both ends of the connecting pipe are respectively connected to the suction pipe and the dust suction pipe, a cooling assembly is provided on the side of the first fixed plate close to the suction pipe, the cooling assembly includes a cooling head and a bearing provided on the first fixed plate, the bearing is connected to the first clamp, the cooling head passes through the bearing and is connected to the workpiece with the first clamp, a water inlet pipe and a drain pipe are connected to the cooling head, and the water inlet pipe is used to input cooling water into the workpiece.

2. The workpiece spraying device according to claim 1, It is characterized in that The main motor is provided with a slip ring, and the slip ring is electrically connected to each of the rotating motors through a brush.

3. The workpiece spraying device according to claim 1, It is characterized in that One end of the water inlet pipe is connected to the cooling head, and the other end is connected to the mating joint. One end of the drain pipe is connected to the cooling head, and the other end is connected to the mating joint. A main water inlet pipe and a main water outlet pipe are provided on the rotating connector, and the rotating connector is connected to the inside of the mating joint.

4. The workpiece spraying device according to claim 3, It is characterized in that The cooling head is provided with a quick air inlet pipe and a quick drain pipe, wherein the quick air inlet pipe is used to supply air into the workpiece and discharge cooling water from the quick drain pipe.

5. The workpiece spraying device according to claim 1, It is characterized in that The fixing assembly further includes: a plurality of dust-isolating plates arranged between the first fixing plate and the second fixing plate, wherein the dust-isolating plates separate two adjacent workpieces.

6. The workpiece spraying device according to claim 1, It is characterized in that The workpiece spraying device further comprises: a coating thickness gauge, and the coating thickness gauge and the spraying part are arranged on the same side of the fixing assembly.

7. The workpiece spraying device according to claim 1, It is characterized in that A slideway is provided at the bottom of the bracket, and the bracket can slide on the slideway along the axial direction of the fixing component.

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