Adjustable spraying device for production of circuit board and method of use thereof

Abstract

This invention discloses an adjustable spraying device and its usage method for circuit board production, relating to the technical field of spraying devices. It includes a fixed frame, a rotating table, and a support plate. The fixed frame is fixedly connected to the top of the worktable and has a spraying mechanism mounted on it. The rotating table is rotatably mounted on the top of the worktable, and a drive mechanism is installed inside the worktable. The support plate has a clamping mechanism for fixing the circuit board within its inner cavity, and a lifting mechanism is installed inside the rotating table. The support plate is equidistantly positioned on the top of the rotating table via the lifting mechanism. This invention utilizes the coordinated arrangement of the spraying mechanism, rotating table, drive mechanism, support plate, clamping mechanism, and lifting mechanism to create a sealed space during spraying, effectively confining paint mist and significantly reducing evaporation and dispersion. This not only improves coating uniformity and quality but also fundamentally improves the working environment, ensuring continuous and pollution-free circuit board spraying operations and facilitating use.

Description

Technical Field

[0001] This invention relates to the field of spraying equipment technology, and in particular to an adjustable spraying device for circuit board production and its method of use. Background Technology

[0002] Circuit board coating equipment is used to coat conformal coatings, solder resist inks, etc. The main types include traditional air spraying, which uses atomizing spray guns to spray circuit boards and uses transmission mechanisms such as robotic arms to achieve uniform, precise and automated coating operations.

[0003] When existing circuit board coating equipment is in operation, the coating area and atomized paint droplets are usually directly exposed to the workshop environment. This can lead to the diffusion of volatile organic compounds, affecting air quality and posing a potential risk to the health of operators. At the same time, the escaping paint mist may settle on the surface of equipment and other workpieces, increasing cleaning and maintenance costs and affecting the overall cleanliness of the workshop and the stability of production quality. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable spraying device and its method of use for circuit board production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable spraying device for circuit board production, comprising a worktable;

[0006] A fixed frame is fixedly connected to the top of the workbench, and a spraying mechanism is provided on the fixed frame;

[0007] A rotary table is rotatably mounted on the top of a workbench, and the workbench is equipped with a drive mechanism for driving the rotary table to rotate.

[0008] The support plate has a clamping mechanism for fixing the circuit board inside its cavity. The rotating table has a lifting mechanism inside its interior. The support plate is equidistantly positioned at the top of the rotating table via the lifting mechanism.

[0009] Preferably, the spraying mechanism includes:

[0010] The housing is fixedly installed on the outer wall of the mounting frame;

[0011] Pump body, which is fixedly installed inside the mounting frame;

[0012] A fixing cover is fixedly connected to the top of the inner wall of the fixing frame;

[0013] The nozzle is fixedly installed on the top of the inner wall of the fixed cover;

[0014] A connecting pipe, one end of which passes through a fixing frame and is fixedly connected to the output end of the pump body, and the other end of which passes through a fixing cover and is fixedly connected to the nozzle.

[0015] Preferably, the drive mechanism includes:

[0016] A rotating column is rotatably mounted on a worktable via bearings, and the rotating table is fixedly connected to the top of the rotating column;

[0017] The motor is fixedly connected inside the worktable;

[0018] The first reversing gear is fixedly inserted into the rotating column;

[0019] The second reversing gear is connected to the output end of the motor, and the first reversing gear meshes with the second reversing gear.

[0020] Preferably, the clamping mechanism includes:

[0021] A fixing plate, which is fixedly connected to the bottom end of the inner wall of the bearing plate;

[0022] A bidirectional screw, wherein the top of the fixed plate is provided with an adjustment groove, and the end of the bidirectional screw is rotatably inserted into the inner wall of the adjustment groove;

[0023] An adjusting block is slidably disposed inside an adjusting groove, and the adjusting block and the bidirectional screw form a screw drive;

[0024] A clamping plate is fixedly connected to the top of the adjusting block.

[0025] Preferably, rubber pads are fixedly connected to opposite sides of the clamping plate, and the outer wall of the rubber pads is provided with anti-slip texture.

[0026] Preferably, a controller is fixedly installed on the top of the workbench, and the controller is used to control the start and stop of the motor and the pump body.

[0027] Preferably, the lifting mechanism includes:

[0028] A lifting rod, the top end of which is fixedly connected to the bottom end of a support plate;

[0029] The slide rod has extrusion grooves evenly spaced inside the rotary table, and the end of the slide rod is fixedly connected to the inner wall of the extrusion groove.

[0030] An extrusion plate is slidably connected to a slide rod, and a lifting rod is fixedly connected to the extrusion plate.

[0031] A compression spring, which is sleeved on the outside of the slide rod.

[0032] Preferably, one end of the compression spring is fixedly connected to the extrusion plate, and the other end of the compression spring is fixedly connected to the inner wall of the extrusion groove.

[0033] Preferably, the lifting mechanism further includes:

[0034] A lifting plate, which is fixedly connected to the bottom end of a lifting rod;

[0035] Rollers, which are symmetrically arranged on both sides of the lifting plate for rotation;

[0036] A rotating ring is fixedly connected to the outer wall of the workbench. An arc-shaped groove is formed inside the rotating ring. A lifting groove is formed inside the workbench. A roller is attached to the bottom end of the rotating ring, and the roller cooperates with the inner wall of the lifting groove.

[0037] The present invention also provides a method of using an adjustable spraying device for circuit board production, comprising the following specific steps:

[0038] Step 1: Workpiece clamping and initialization. Place the circuit board to be coated on the carrier plate. Drive the clamping plates on both sides to move synchronously in opposite directions by manually rotating the bidirectional screw. Use the rubber pads at the ends of the plates to firmly clamp the circuit board.

[0039] Step 2: Start-up and automatic conveying. Start the controller and the motor starts working according to the preset program. Through the meshing transmission of the first reversing gear and the second reversing gear, the rotating column and the rotating table fixed on its top are driven to rotate precisely intermittently, thereby conveying multiple carrier plates and the circuit boards fixed on them to the spraying station defined by the fixed cover below the fixed frame in a circular assembly line manner.

[0040] Step 3: Automatic lifting and sealed spraying. When the support plate moves with the rotating table to directly below the fixed cover, the rollers on both sides of the lifting plate at the bottom are lifted by the lifting groove and the elastic force of the compression spring, so that the support plate is tightly connected with the fixed cover above, forming a temporary local sealed space. At the same time, the controller triggers the pump to start, and the paint in the box is pressed to the nozzle through the connecting pipe to perform centralized and controllable atomized spraying on the circuit board in the sealed space.

[0041] Step 4: Reset and Cyclic Operation. After the preset spraying time for the current station ends, the controller stops the pump from feeding material, the rotary table continues to rotate, and the rollers at the bottom of the support plate move out of the lifting slot. The compression spring, which was originally compressing elastic potential energy during the upward process, pushes the extrusion plate down along the slide bar. The lifting rod drives the support plate to automatically descend, separating it from the fixed cover and restoring it to the initial height. The rotary table continues to rotate, turning the workpiece that has been sprayed out of the station, and at the same time sending in the next workpiece to be sprayed. Steps 3 and 4 are repeated to achieve continuous, rhythmic, automated cyclic production.

[0042] Step 5: Finishing and unloading. After all circuit boards have been coated, stop the equipment using the controller and manually rotate the bidirectional screws on each support plate in the opposite direction to loosen the clamping plates from the circuit boards. This allows you to easily remove all coated workpieces and prepare for the next batch of production.

[0043] The technical effects and advantages of this invention are as follows:

[0044] This invention utilizes a combination of a spraying mechanism, a rotary table, a drive mechanism, a carrier plate, a clamping mechanism, and a lifting mechanism. An adjustable clamping mechanism securely holds circuit boards of different specifications within the carrier plate. The rotary table then transports multiple carrier plates sequentially in a ring to the area below the spraying mechanism. The lifting mechanism further seals the carrier plate below the spraying mechanism, creating a closed space during spraying. This effectively confines paint mist, significantly reducing evaporation and dispersion. This not only improves coating uniformity and quality but also fundamentally enhances the working environment, ensuring continuous, pollution-free circuit board spraying operations and facilitating use. Attached Figure Description

[0045] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0046] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0047] Figure 2 This is a schematic diagram of the internal structure of the worktable of the present invention from the front.

[0048] Figure 3 This is a schematic diagram of the overall side internal structure of the present invention;

[0049] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0050] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B;

[0051] Figure 6 This is a schematic diagram of the internal structure of the front of the support plate of the present invention.

[0052] In the attached diagram: 1. Workbench; 2. Fixing frame; 3. Spraying mechanism; 31. Box; 32. Pump body; 33. Fixing cover; 34. Spray nozzle; 35. Connecting pipe; 4. Rotary table; 5. Drive mechanism; 51. Rotating column; 52. Motor; 53. First reversing gear; 54. Second reversing gear; 6. Bearing plate; 7. Clamping mechanism; 71. Fixing plate; 72. Bidirectional screw; 73. Adjusting block; 74. Clamping plate; 75. Rubber pad; 8. Lifting mechanism; 81. Lifting rod; 82. Slide rod; 83. Extrusion plate; 84. Compression spring; 85. Lifting plate; 86. Roller; 87. Rotating ring; 9. Controller. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] This invention provides, for example Figure 1-6 An adjustable spraying device for circuit board production is shown, comprising a worktable 1, a fixed frame 2, a spraying mechanism 3, a rotary table 4, a drive mechanism 5, a support plate 6, a clamping mechanism 7, and a lifting mechanism 8. The fixed frame 2 is fixedly connected to the top of the worktable 1, and the spraying mechanism 3 is mounted on the fixed frame 2. The rotary table 4 is rotatably mounted on the top of the worktable 1, and the drive mechanism 5 for driving the rotary table 4 to rotate is located inside the worktable 1. The support plate 6 has a clamping mechanism 7 for fixing the circuit board inside its cavity, and the rotary table 4 has a lifting mechanism 8 inside its cavity. The support plate 6 is connected to the rotary table 4 by the lifting mechanism 8. Equivalently positioned at the top of the rotary table 4, the adjustable clamping mechanism 7 can fix and clamp circuit boards of different specifications inside the carrier plate 6. The rotary table 4 can then transport multiple carrier plates 6 one by one in a ring to the bottom of the spraying mechanism 3. The lifting mechanism 8 seals the carrier plates 6 located below the spraying mechanism 3 with the fixing cover 33, thereby forming a sealed space at the moment of spraying. This effectively confines the paint mist and greatly reduces evaporation and dispersion. It not only improves the uniformity and quality of the coating, but also fundamentally improves the working environment, ensuring continuous and pollution-free circuit board spraying operations and making it easy to use.

[0055] Specifically, the spraying mechanism 3 includes a housing 31, a pump body 32, a fixed cover 33, a nozzle 34, and a connecting pipe 35. The housing 31 is fixedly installed on the outer wall of the fixed frame 2; the pump body 32 is fixedly installed inside the fixed frame 2; the fixed cover 33 is fixedly connected to the top of the inner wall of the fixed frame 2; the nozzle 34 is fixedly installed to the top of the inner wall of the fixed cover 33; one end of the connecting pipe 35 passes through the fixed frame 2 and is fixedly connected to the output end of the pump body 32, and the other end of the connecting pipe 35 passes through the fixed cover 33 and is fixedly connected to the nozzle 34. The pump body 32 serves as a power source, drawing paint from the housing 31 and delivering it through the connecting pipe 35 to the nozzle 34 located at the top of the fixed cover 33 for atomized spraying. During spraying, the fixed cover 33 works in conjunction with the lifting support plate 6 to form a closed or semi-closed space, effectively restricting the diffusion of paint mist, significantly reducing environmental pollution and material waste, while improving the concentration and uniformity of spraying. The sealed space effectively blocks external airflow disturbances, creating a stable and controllable microenvironment for spraying. This allows the paint mist sprayed from the nozzle 34 to adhere more evenly to the surface of the circuit board, effectively reducing defects such as uneven coating thickness, orange peel, and particles caused by airflow, thereby steadily improving the consistency and yield of product spraying.

[0056] Specifically, the drive mechanism 5 includes a rotating column 51, a motor 52, a first reversing gear 53, and a second reversing gear 54. The rotating column 51 is rotatably mounted on the worktable 1 via bearings, and the rotary table 4 is fixedly connected to the top of the rotating column 51. The motor 52 is fixedly connected inside the worktable 1. The first reversing gear 53 is fixedly inserted and connected to the rotating column 51. The output end of the motor 52 is connected to the second reversing gear 54. The first reversing gear 53 and the second reversing gear 54 are meshed. The motor 52 drives the second reversing gear 54 to rotate, and through gear meshing, it drives the first reversing gear 53 and the rotating column 51 fixed thereto to rotate, thereby realizing the periodic intermittent rotation of the rotary table 4, realizing the precise indexing and positioning of the rotary table 4, and ensuring that each bearing plate 6 can accurately stop below the spraying station.

[0057] Specifically, the clamping mechanism 7 includes a fixed plate 71, a bidirectional screw 72, an adjusting block 73, and a clamping plate 74. The fixed plate 71 is fixedly connected to the bottom end of the inner wall of the bearing plate 6. An adjusting groove is formed at the top of the fixed plate 71, and the end of the bidirectional screw 72 is rotatably inserted into the inner wall of the adjusting groove. The adjusting block 73 is slidably disposed inside the adjusting groove, and the adjusting block 73 and the bidirectional screw 72 form a screw drive. The clamping plate 74 is fixedly connected to the top of the adjusting block 73, and rubber pads 75 are fixedly connected to opposite sides of the clamping plate 74. The outer wall of the rubber pads 75 has anti-slip texture. Rotating the bidirectional screw 72 drives the two adjusting blocks 73 to move synchronously in opposite directions or in the adjusting groove through the screw drive, thereby causing the clamping plate 74 to clamp or release the workpiece. The rubber pads 75 provide cushioning and friction, can adapt to circuit boards of different sizes, do not require changing fixtures, and significantly improve changeover efficiency and equipment versatility.

[0058] Furthermore, a controller 9 is fixedly installed on the top of the workbench 1. The controller 9 is used to control the start and stop of the motor 52 and the pump body 32. As the control center, it controls the start and stop and speed of the motor 52 according to the preset program or instructions, thereby controlling the rotation and lifting rhythm, as well as the start and stop of the pump body 32.

[0059] Specifically, the lifting mechanism 8 includes a lifting rod 81, a sliding rod 82, an extrusion plate 83, a compression spring 84, a lifting plate 85, a roller 86, and a rotating ring 87. The top end of the lifting rod 81 is fixedly connected to the bottom end of the bearing plate 6. The rotating table 4 has extrusion grooves equidistantly arranged inside. The end of the sliding rod 82 is fixedly connected to the inner wall of the extrusion groove. The extrusion plate 83 is slidably inserted into the sliding rod 82, and the lifting rod 81 is fixedly inserted into the extrusion plate 83. The compression spring 84 is sleeved on the outside of the sliding rod 82. One end of the compression spring 84 is fixedly connected to the extrusion plate 83, and the other end of the compression spring 84 is fixedly connected to the inner wall of the extrusion groove. The lifting plate 85 is fixedly connected to the bottom end of the lifting rod 81; the rollers 86 are symmetrically arranged on both sides of the lifting plate 85; the rotating ring 87 is fixedly connected to the outer wall of the worktable 1, and the rotating ring 87 has an arc-shaped groove inside. The worktable 1 has a lifting groove inside. The rollers 86 fit against the bottom end of the rotating ring 87, and the rollers 86 cooperate with the inner wall of the lifting groove. When the rotary table 4 rotates, it drives the lifting plate 85 and its rollers 86 into the arc-shaped groove area of ​​the rotating ring 87. Under the guidance of the curved surface of the lifting groove, the rollers 86 drive the entire lifting rod 81, the bearing plate 6 and the workpiece to rise smoothly. The compressed spring 84 releases the stored energy. After leaving the area, it resets under the action of the spring force, realizing a purely mechanical automatic lifting. No additional electric or pneumatic control is required. The rotational motion of the rotary table 4 is automatically converted into the precise lifting motion of the bearing plate 6. The action is reliable and low cost.

[0060] How to use this invention:

[0061] Step 1: Workpiece clamping and initialization. Place the circuit board to be coated on the carrier plate 6. Drive the clamping plates 74 on both sides to move synchronously in opposite directions by manually rotating the bidirectional screw 72. Use the rubber pads 75 at their ends to firmly clamp the circuit board.

[0062] Step 2: Start-up and automatic conveying. Start the controller 9 and the motor 52 starts working according to the preset program. Through the meshing transmission of the first reversing gear 53 and the second reversing gear 54, the rotating column 51 and the rotating table 4 fixed on its top are driven to rotate precisely intermittently, thereby conveying multiple carrier plates 6 and the circuit boards fixed on them to the spraying station defined by the fixed cover 33 below the fixed frame 2 in a circular assembly line manner.

[0063] Step 3: Automatic lifting and sealed spraying. When the support plate 6 moves with the rotary table 4 to directly below the fixed cover 33, the rollers 86 on both sides of the lifting plate 85 at its bottom lift plate 85 lift the support plate 6 under the limit of the lifting groove and the elastic force of the compression spring 84, so that it is tightly connected with the fixed cover 33 above, forming a temporary local sealed space. At the same time, the controller 9 triggers the pump body 32 to start, and pressurizes the paint in the box 31 to the spray head 34 through the connecting pipe 35, so as to perform centralized and controllable atomized spraying on the circuit board in the sealed space.

[0064] Step 4: Reset and Cyclic Operation. After the preset spraying time of the current station ends, the controller 9 controls the pump body 32 to stop feeding material, the rotary table 4 continues to rotate, and the roller 86 at the bottom of the support plate 6 moves out of the lifting groove. The compression spring 84, which was originally compressed during the rising process, compresses the elastic potential energy and pushes the extrusion plate 83 down along the slide bar 82. The lifting rod 81 drives the support plate 6 to automatically descend, so that it separates from the fixed cover 33 and returns to the initial height. The rotary table 4 continues to rotate, turning the workpiece that has been sprayed out of the station, and at the same time sending in the next workpiece to be sprayed. Steps 3 and 4 are repeated to achieve continuous and rhythmic automated cyclic production.

[0065] Step 5: Finishing and unloading. After all circuit boards have been coated, stop the equipment by controlling the controller 9. Manually rotate the bidirectional screws 72 on each carrier plate 6 in the reverse direction to release the clamping plates 74 from the circuit boards. This allows you to easily remove all coated workpieces and prepare for the next batch of production.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable spraying device for circuit board production, characterized in that, include: Workbench (1); A fixed frame (2) is fixedly connected to the top of the workbench (1), and a spraying mechanism (3) is provided on the fixed frame (2). A rotating table (4) is rotatably mounted on the top of a workbench (1), and a drive mechanism (5) for driving the rotating table (4) to rotate is provided inside the workbench (1). The bearing plate (6) has a clamping mechanism (7) for fixing the circuit board in its inner cavity. The rotating table (4) has a lifting mechanism (8) inside. The bearing plate (6) is equidistantly positioned at the top of the rotating table (4) through the lifting mechanism (8).

2. The adjustable spraying device for circuit board production according to claim 1, characterized in that, The spraying mechanism (3) includes: Box (31), the box (31) is fixedly installed on the outer wall of the fixing frame (2); Pump body (32), which is fixedly installed inside the fixing frame (2); A fixing cover (33) is fixedly connected to the top of the inner wall of the fixing frame (2); The nozzle (34) is fixedly installed on the top of the inner wall of the fixed cover (33); A connecting pipe (35) is provided. One end of the connecting pipe (35) passes through the fixing frame (2) and is fixedly connected to the output end of the pump body (32). The other end of the connecting pipe (35) passes through the fixing cover (33) and is fixedly connected to the nozzle (34).

3. The adjustable spraying device for circuit board production according to claim 2, characterized in that, The drive mechanism (5) includes: A rotating column (51) is rotatably mounted on a worktable (1) via a bearing, and a rotating table (4) is fixedly connected to the top of the rotating column (51). Motor (52), which is fixedly connected to the inside of the workbench (1); The first reversing gear (53) is fixedly inserted and connected to the rotating column (51); The output end of the motor (52) is connected to the second reversing gear (54) for transmission, and the first reversing gear (53) is meshed with the second reversing gear (54).

4. The adjustable spraying device for circuit board production according to claim 1, characterized in that, The clamping mechanism (7) includes: A fixing plate (71) is fixedly connected to the bottom end of the inner wall of the bearing plate (6); A bidirectional screw (72) is provided with an adjustment groove at the top of the fixing plate (71), and the end of the bidirectional screw (72) is rotatably inserted into the inner wall of the adjustment groove; Adjusting block (73), the adjusting block (73) is slidably disposed inside the adjusting groove, the adjusting block (73) and the bidirectional screw (72) form a screw drive; A clamping plate (74) is fixedly connected to the top of the adjusting block (73).

5. The adjustable spraying device for circuit board production according to claim 4, characterized in that, Each of the clamping plates (74) has a rubber pad (75) fixedly connected to one side of the clamping plate (74), and the outer wall of the rubber pad (75) has an anti-slip texture.

6. The adjustable spraying device for circuit board production according to claim 3, characterized in that, A controller (9) is fixedly installed on the top of the workbench (1). The controller (9) is used to control the start and stop of the motor (52) and the pump body (32).

7. The adjustable spraying device for circuit board production according to claim 1, characterized in that, The lifting mechanism (8) includes: The top end of the lifting rod (81) is fixedly connected to the bottom end of the bearing plate (6); The slide rod (82) has extrusion grooves equidistantly arranged inside the rotary table (4), and the end of the slide rod (82) is fixedly connected to the inner wall of the extrusion groove; The extrusion plate (83) is slidably interlocked with the slide rod (82), and the lifting rod (81) is fixedly interlocked with the extrusion plate (83). A compression spring (84) is sleeved on the outside of the slide bar (82).

8. The adjustable spraying device for circuit board production according to claim 7, characterized in that, One end of the compression spring (84) is fixedly connected to the extrusion plate (83), and the other end of the compression spring (84) is fixedly connected to the inner wall of the extrusion groove.

9. An adjustable spraying device for circuit board production according to claim 7, characterized in that, The lifting mechanism (8) also includes: A lifting plate (85) is fixedly connected to the bottom end of a lifting rod (81); Rollers (86) are symmetrically arranged on both sides of the lifting plate (85); A rotating ring (87) is fixedly connected to the outer wall of the workbench (1). An arc-shaped groove is provided inside the rotating ring (87). A lifting groove is provided inside the workbench (1). A roller (86) is attached to the bottom end of the rotating ring (87). The roller (86) cooperates with the inner wall of the lifting groove.

10. A method of using an adjustable spraying device for circuit board production according to any one of claims 1-9, characterized in that, The specific usage steps are as follows: Step 1: Workpiece clamping and initialization. Place the circuit board to be sprayed on the carrier plate (6). Drive the clamping plates (74) on both sides to move synchronously in opposite directions by manually rotating the bidirectional screw (72). Use the rubber pads (75) at their ends to firmly clamp the circuit board. Step 2: Start-up and automatic conveying. Start the controller (9), and the motor (52) starts working according to the preset program. Through the meshing transmission of the first reversing gear (53) and the second reversing gear (54), the rotating column (51) and the rotating table (4) fixed on its top are driven to rotate precisely intermittently, so as to convey multiple carrier plates (6) and the circuit boards fixed on them to the spraying station defined by the fixed cover (33) below the fixed frame (2) in a circular assembly line manner. Step 3: Automatic lifting and sealed spraying. When the support plate (6) moves with the rotating table (4) to directly below the fixed cover (33), the rollers (86) on both sides of the lifting plate (85) at its bottom lift plate lift plate (6) under the limit of the lifting groove and the elastic force of the compression spring (84), so that it is tightly connected with the fixed cover (33) above, forming a temporary local sealed space. At the same time, the controller (9) triggers the pump body (32) to start, and presses the paint in the box (31) through the connecting pipe (35) to the nozzle (34) to perform centralized and controllable atomized spraying on the circuit board in the sealed space. Step 4: Reset and Cyclic Operation. After the preset spraying time of the current station ends, the controller (9) controls the pump body (32) to stop feeding material, the rotary table (4) continues to rotate, and the roller (86) at the bottom of the support plate (6) moves out of the lifting groove. The compression spring (84) that was originally rising compresses the elastic potential energy and pushes the extrusion plate (83) down along the slide bar (82). The lifting rod (81) drives the support plate (6) to automatically descend, so that it separates from the fixed cover (33) and returns to the initial height. The rotary table (4) continues to rotate, and the workpiece that has been sprayed is transferred out of the station. At the same time, the next workpiece to be sprayed is sent in. Steps 3 and 4 are repeated to realize continuous and rhythmic automated cyclic production. Step 5: End and unloading. After all circuit board spraying operations are completed, stop the equipment operation through the controller (9), manually rotate the bidirectional screw (72) on each carrier plate (6) in the reverse direction to loosen the clamping plate (74) from the circuit board, and then easily remove all the sprayed workpieces to prepare for the next batch of production.

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