Automatic painting device

Abstract

The present invention relates to the technical field of motor housing painting, and discloses an automatic painting device, including a paint spraying barrel, the top cover of the paint spraying barrel is composed of a plurality of fan-shaped top plates, and the plurality of top plates are rotatably mounted on the outer surface of the paint spraying barrel; an annular lower support seat is fixedly mounted on the inner wall of the paint spraying barrel, an intermediate box is fixedly mounted on the upper surface of the lower support seat, an annular upper support seat is slidably mounted on the inner wall of the paint spraying barrel, and the upper support seat is located above the intermediate box. The automatic painting device, through the combined design of the paint spraying barrel and the top plate, can place the casing inside the paint spraying barrel when painting the casing, and use the internal space of the paint spraying barrel as the painting operation space, while using the nozzles on the inner ring surface of the lower support seat and the upper support seat intermediate ring to realize the rotation and up and down movement of the casing for painting, so as to comprehensively spray paint the inner and outer surfaces of the casing.

Description

Technical Field

[0001] The invention relates to the technical field of motor shell spray painting, in particular to an automatic spray painting device. Background Art

[0002] Spray painting is a method of dispersing paint into uniform and fine droplets with the help of pressure and applying it to the surface of the object to be painted. It can be divided into air spray painting, airless spray painting and electrostatic spray painting. After the rear cover of the motor is formed, its surface needs to be sprayed with paint, which can increase the beauty of the casing and have a certain anti-rust and anti-corrosion effect.

[0003] The traditional way to spray paint the rear cover of a motor is to use a conveying system to transport the casing to a paint booth, where a robot automatically sprays the casing. When the robot is used to spray paint the casing in the paint booth, a large amount of vaporized paint will diffuse into the space inside the paint booth and adhere to the walls of the paint booth and the surface of the equipment. At the same time, the space inside the paint booth needs to be separated from the external space to prevent the paint from diffusing into the external environment and polluting the environment.

[0004] The automatic painting method of the motor rear cover casing not only causes a large amount of paint waste, but also the paint will adhere to the surface of the equipment and be difficult to clean, which may affect the operation of the equipment. In addition, using a paint spraying room to separate the painting operation space of the casing from the outside will increase the space occupied by the paint spraying, and it is inconvenient for the staff to directly enter the paint spraying room. Summary of the invention

[0005] In order to solve the above existing automatic painting method of the motor rear cover casing, not only will a large amount of paint be wasted, but the paint will also adhere to the surface of the equipment and be difficult to clean, which may affect the operation of the equipment. In addition, using a paint room to separate the painting operation space of the casing from the outside will increase the space occupied by the paint, and it is inconvenient for the staff to directly enter the paint room.

[0006] The present invention is implemented by the following technical scheme: an automatic painting device, comprising a paint spraying barrel, the top cover of the paint spraying barrel is composed of a plurality of fan-shaped top plates, the plurality of top plates are rotatably mounted on the outer surface of the paint spraying barrel, and the plurality of top plates are combined to form the top cover of the paint spraying barrel, thereby closing the upper end of the paint spraying barrel;

[0007] An annular lower support seat is fixedly mounted on the inner wall of the paint spray barrel, an intermediate box is fixedly mounted on the upper surface of the lower support seat, an annular upper support seat is slidably mounted on the inner wall of the paint spray barrel, the upper support seat is located above the intermediate box, a swivel is rotatably mounted on the inner surfaces of the lower support seat and the upper support seat, a plurality of groups of spray heads are mounted on the inner ring surface of the swivel, the rotation of the swivel will drive the spray heads to rotate together, so that the spray heads can be used to perform a rotational spraying operation on the casing;

[0008] The interior of the intermediate box is provided with a plurality of groups of air cavities, the air cavities are communicated with the inner side wall and the space outside the top surface of the intermediate box through a mesh plate, the air cavities are designed to absorb the paint diffused to the outside of the casing during painting, the bottom surface of the interior of the paint spray tube is provided with a negative pressure cavity, the air cavity is communicated with the negative pressure cavity through a conduit, negative pressure can be generated inside the air cavity through the negative pressure cavity, the bottom surface of the negative pressure cavity is provided with an air suction pipe opening, the air suction pipe opening is externally connected to a negative pressure device, and is used for communicating the negative pressure cavity with the negative pressure device, and a recovery box is connected below the air suction pipe opening for recovering paint;

[0009] A recovery chamber is arranged below the center of the lower support seat. After the inner and outer surfaces of the casing are sprayed with paint, the vaporized paint floating in the internal space of the paint spray tube is adsorbed and recovered. A group of small impellers and multiple groups of large impellers are arranged inside the recovery chamber. The group of small impellers and multiple groups of large impellers are distributed in sequence from top to bottom in a cone shape. The rotation speeds of the small impellers and the large impellers decrease successively from top to bottom. A notch is arranged on the bottom surface of the recovery chamber, and the recovery chamber can be connected with the negative pressure chamber through the notch.

[0010] The combined design of the small impeller and the large impeller can form an airflow inside the paint spray can that flows toward the recovery chamber. At the same time, the flow rate of the airflow decreases gradually from the center of the paint spray can to the outside, so that the vaporized paint inside the paint spray can flows toward the center of the paint spray can, thereby reducing the contact between the vaporized paint and the internal components of the paint spray can, and preventing the paint from adhering to the internal components of the paint spray can.

[0011] Furthermore, a rotating rod is fixedly installed on the rotating connection surface between the top plate and the outer surface of the paint spraying tube, and a sliding groove is provided on the surface of the rotating rod;

[0012] A support ring is installed on the outer surface of the paint spray tube for sliding up and down, and a plurality of push rods are fixedly installed on the upper surface of the support ring. The upper ends of the push rods are installed in the corresponding sliding grooves on the surfaces of the rotating rods, and a hydraulic rod 1 is installed on the lower surface of the support ring. The hydraulic rod 1 can drive the push rod to move upward or downward through the support ring, thereby driving the rotating rod to rotate through the push rod, and the rotating rod drives the top plate to rotate, so as to realize the opening and closing of the top cover of the paint spray tube.

[0013] Furthermore, a second hydraulic rod is provided between the middle box and the upper support seat;

[0014] A transmission rod is rotatably mounted inside the middle box, the transmission rod is a telescopic rod, and the upper end of the transmission rod extends to the inside of the upper support seat;

[0015] The outer ring surface of the rotating ring is provided with a gear ring, and the upper and lower end surfaces of the transmission rod are provided with driving gears, and the two driving gears are respectively meshed with the gear rings on the outer ring surfaces of the rotating rings inside the lower support seat and the upper support seat.

[0016] The upper support seat can be driven to move up and down by hydraulic rod 2, so that the nozzle inside the upper support seat can move up and down. When the upper support seat moves up and down, the design of the transmission rod telescopic rod can make the driving gear always mesh with the gear ring on the outer ring surface of the corresponding rotating ring.

[0017] Furthermore, the spray head is mounted on the inner surface of the rotating ring through a support for up and down rotation. A pneumatic rod 1 for controlling the rotation of the spray head is mounted on the surface of the support. The pneumatic rod 1 can be used to control the up and down rotation of the spray head, thereby increasing the spraying range of the spray head.

[0018] Furthermore, a rotating shaft is rotatably installed inside the recovery chamber, a driving motor for driving the rotating shaft to rotate is installed inside the negative pressure chamber, and the impeller is fixedly installed on the surface of the rotating shaft;

[0019] A plurality of shaft seats are rotatably mounted on the surface of the rotating shaft, and a plurality of groups of large impellers are rotatably mounted on the surfaces of the plurality of shaft seats respectively;

[0020] The lower surfaces of the small impeller and the large impeller are fixedly mounted with small toothed discs, the upper surfaces of the plurality of groups of large impellers are fixedly mounted with large toothed discs, and transmission gears are arranged between the adjacent small toothed discs and the large toothed discs, the transmission gears are composed of a coaxial large gear and a small gear, the large gear is meshed with the small toothed disc, the small gear is meshed with the large toothed disc, and the transmission gears are rotatably mounted in the inner wall of the recovery chamber through a shaft;

[0021] The blades of two adjacent impellers in one group of small impellers and in the plurality of groups of large impellers are installed in opposite directions.

[0022] The rotation of the shaft can drive the small impeller and the large impeller to rotate at the same time. At the same time, the installation directions of the blades between adjacent impellers are opposite, so that the small impeller and the large impeller can generate airflow in the same direction.

[0023] Furthermore, a baffle is rotatably mounted on the lower surface of the recovery chamber, and the baffle in a horizontal state is adapted to the notch to control the connection and closure between the recovery chamber and the negative pressure chamber;

[0024] The inner wall of the negative pressure chamber is provided with a pneumatic rod 2, and an L-shaped connecting rod is rotatably installed on the lower end of the pneumatic rod 2. The connecting rod is fixedly installed on the lower surface of the baffle. The rotation of the baffle can be controlled by the cooperation between the pneumatic rod 2 and the connecting rod.

[0025] Furthermore, it also includes a guide rail frame, wherein a chain rail is installed inside the guide rail frame, and a plurality of hangers are hung in the chain rail;

[0026] The paint spraying tube is installed inside the paint spraying box by sliding up and down on a support plate, a hydraulic rod 3 is installed on the lower surface of the support plate, and openings are provided on both side surfaces of the paint spraying box corresponding to the moving direction of the hanger;

[0027] When a plurality of the top plates are combined to form a top cover of the paint spray barrel, an opening is reserved on the surface of the top cover.

[0028] Furthermore, it also includes a control system, the control system includes:

[0029] Position sensing module 1, the position sensing module 1 is installed inside the paint spraying box, the position sensing module 1 is connected to the driving part of the chain rail and the hydraulic circuit control system of the hydraulic rod 3 by electrical signals, when the chain rail drives the casing to move to the inside of the paint spraying box through the hanging part, the position sensing module 1 sends a stop signal to the driving part of the chain rail, and sends a start signal to the hydraulic circuit control system of the hydraulic rod 3;

[0030] The position sensing module 2 is installed in the inner wall of the paint spray box. The position sensing module 2 is connected to the hydraulic circuit control systems of the hydraulic rod 1 and the hydraulic rod 3 by electrical signals. When the paint spray barrel moves upward by a certain distance, the position sensing module 2 sends a start signal to the hydraulic circuit control system of the hydraulic rod 1. When the housing enters the paint spraying position inside the paint spray barrel, the position sensing module 2 sends a start signal to the hydraulic circuit control system of the hydraulic rod 3.

[0031] An angle detection module is used to detect the angle between the top plate and the horizontal plane. The angle detection module is connected to the hydraulic circuit control system of the hydraulic rod 1 and the hydraulic rod 2, as well as the driving device of the transmission rod and the air pressure circuit control system of the pneumatic rod 1 by electrical signals. When the top plate is in a parallel state with the top surface of the paint spraying tube, the angle detection module sends a stop signal to the hydraulic circuit control system of the hydraulic rod 1, and at the same time sends a start signal to the hydraulic circuit control system of the hydraulic rod 2, the driving device of the transmission rod and the air pressure circuit control system of the pneumatic rod 1, and sends an operation instruction to the paint spraying equipment, and the spray head starts the paint spraying operation;

[0032] A time counting module is used to control the painting operation time of the nozzle and the operation time of the small impeller and the large impeller. The time counting module is connected to the driving device of the rotating shaft, the pneumatic circuit control system of the pneumatic rod 2, the hydraulic circuit control system of the hydraulic rod 1, the driving device of the transmission rod, and the hydraulic circuit control system of the hydraulic rod 1 by electrical signals. The time counting module counts the painting time of the nozzle and the running time of the rotating shaft, thereby sending a start or stop signal to the driving device of the rotating shaft, a stop signal to the pneumatic circuit control system of the pneumatic rod 2, a stop signal to the hydraulic circuit control system of the hydraulic rod 1 and the driving device of the transmission rod, and a start signal to the hydraulic circuit control system of the hydraulic rod 1.

[0033] Furthermore, an air suction pipe opening is provided on the bottom surface of the negative pressure chamber, and the air suction pipe opening is externally connected to a negative pressure device for connecting the negative pressure chamber with the negative pressure device. A recovery box is connected below the air suction pipe opening for recovering paint.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The automatic painting device, through the combined design of the paint spray tube and the top plate, can place the casing inside the paint spray tube when painting the casing, and use the internal space of the paint spray tube as the painting operation space, while utilizing the nozzles on the inner ring surface of the lower support seat and the upper support seat transfer ring to realize the rotation and up and down movement of the casing for painting, so as to fully spray paint the inner and outer surfaces of the casing. In addition, the combined design of the air cavity and the negative pressure cavity inside the intermediate cavity and the combined design of the small impeller and the large impeller inside the negative pressure cavity and the recovery cavity can recover the paint diffused to the outside of the casing during the painting process, and at the same time, after the casing surface is painted, the paint floating in the internal space of the paint spray tube can be recovered, which is beneficial to reduce the consumption of paint and prevent the paint from diffusing into the air outside the paint spray tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The overall structure of the automatic painting device of the present invention is shown in the main view Figure 1 ;

[0037] Figure 2 It is a side view of the paint spray box structure of the present invention;

[0038] Figure 3 The main view of the internal structure of the paint spray box of the present invention Figure 1 ;

[0039] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at A in the middle;

[0040] Figure 5 This is a front view of the internal structure of the paint spray barrel of the present invention;

[0041] Figure 6 This is a schematic diagram of the top surface structure of the paint spray barrel of the present invention;

[0042] Figure 7 This is a schematic diagram of the top surface structure of the intermediate box of the present invention;

[0043] Figure 8 This is a front view of the internal structure of the recovery chamber of the present invention;

[0044] Fig. 9 The main view of the internal structure of the paint spray box of the present invention Figure 2 ;

[0045] Fig.10 The overall structure of the automatic painting device of the present invention is shown in the main view Figure 2 .

[0046] In the figure: 1. guide rail frame; 2. chain rail; 3. hanging part; 4. paint spray box; 41. opening; 5. paint spray tube; 51. top plate; 511. rotating rod; 6. push rod; 61. hydraulic rod one; 7. lower support seat; 71. middle box; 72. upper support seat; 8. swivel; 9. nozzle; 91. support; 92. pneumatic rod one; 10. transmission rod; 11. hydraulic rod two; 12. air cavity; 121. catheter; 13. negative pressure cavity; 14. recovery box; 141. suction pipe mouth; 15. recovery cavity; 151. rotating shaft; 152. notch; 153. baffle; 16. small impeller; 161. small toothed disc; 17. large impeller; 171. large toothed disc; 18. transmission gear; 19. pneumatic rod two; 191. connecting rod; 20. support plate; 201. hydraulic rod three. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The embodiment of the automatic painting device is as follows: Example

[0049] See also Figure 1-Figure 10 An automatic painting device includes a paint spraying tube 5, the top cover of the paint spraying tube 5 is composed of a plurality of fan-shaped top plates 51, and the plurality of top plates 51 are rotatably mounted on the outer surface of the paint spraying tube 5. The plurality of top plates 51 can be combined to form the top cover of the paint spraying tube 5, thereby closing the upper port of the paint spraying tube 5.

[0050] A rotating rod 511 is fixedly installed on the rotating connection surface between the top plate 51 and the outer surface of the paint spray tube 5, and a sliding groove is opened on the surface of the rotating rod 511; a support ring is slidably installed on the outer surface of the paint spray tube 5, and a plurality of push rods 6 are fixedly installed on the upper surface of the support ring. The upper ends of the push rods 6 are slidably installed in the sliding grooves on the surfaces of the corresponding rotating rods 511, and a hydraulic rod 61 is installed on the lower surface of the support ring. The hydraulic rod 61 can drive the push rod 6 to move upward or downward through the support ring, thereby driving the rotating rod 511 to rotate through the push rod 6, and the rotating rod 511 drives the top plate 51 to rotate, so as to realize the opening and closing of the top cover of the paint spray tube 5.

[0051] An annular lower support seat 7 is fixedly installed on the inner wall of the paint spray tube 5, and an intermediate box 71 is fixedly installed on the upper surface of the lower support seat 7. An annular upper support seat 72 is slidably installed on the inner wall of the paint spray tube 5, and the upper support seat 72 is located above the intermediate box 71. A swivel 8 is rotatably installed on the inner surfaces of the lower support seat 7 and the upper support seat 72.

[0052] A plurality of groups of nozzles 9 are installed on the inner ring surface of the swivel 8. The rotation of the swivel 8 will drive the nozzles 9 to rotate together, so that the nozzles 9 can be used to perform rotational spraying of the casing. The nozzles 9 are installed on the inner ring surface of the swivel 8 by rotating up and down through a support 91. A pneumatic rod 92 for controlling the rotation of the nozzles 9 is installed on the surface of the support 91. The pneumatic rod 92 can be used to control the nozzles 9 to rotate up and down, thereby increasing the spraying range of the nozzles 9.

[0053] A hydraulic rod 11 is provided between the middle box 71 and the upper support seat 72 ; a transmission rod 10 is rotatably installed inside the middle box 71 , and the transmission rod 10 is a telescopic rod, and the upper end of the transmission rod 10 extends to the inside of the upper support seat 72 .

[0054] The outer ring surface of the rotating ring 8 is provided with a gear ring, and the upper and lower end surfaces of the transmission rod 10 are provided with driving gears, and the two driving gears are respectively meshed with the gear rings of the outer ring surface of the rotating ring 8 inside the lower support seat 7 and the upper support seat 72. The upper support seat 72 can be driven up and down by the hydraulic rod 11, so that the nozzle 9 inside the upper support seat 72 moves up and down. When the upper support seat 72 moves up and down, the design of the telescopic rod of the transmission rod 10 can make the driving gear always mesh with the corresponding gear ring of the outer ring surface of the rotating ring 8.

[0055] A plurality of air cavities 12 are provided inside the middle box 71, and the air cavities 12 are communicated with the inner wall and the space outside the top surface of the middle box 71 through a mesh plate. The air cavities 12 are designed to absorb the paint diffused to the outside of the casing during painting. A negative pressure cavity 13 is provided on the bottom surface inside the paint spraying tube 5, and the air cavity 12 is communicated with the negative pressure cavity 13 through a conduit 121, and negative pressure can be generated inside the air cavity 12 through the negative pressure cavity 13. An air suction pipe port 141 is provided on the bottom surface of the negative pressure cavity 13, and the air suction pipe port 141 is externally connected to a negative pressure device for communicating the negative pressure cavity 13 with the negative pressure device. A recovery box 14 is connected below the air suction pipe port 141 for recovering paint.

[0056] A recovery chamber 15 is provided at a position below the center of the lower support seat 7. After the inner and outer surfaces of the casing are sprayed with paint, the vaporized paint floating in the internal space of the paint spray tube 5 is adsorbed and recovered. A group of small impellers 16 and multiple groups of large impellers 17 are provided inside the recovery chamber 15. A group of small impellers 16 and multiple groups of large impellers 17 are distributed in sequence from top to bottom in a cone shape. The rotation speeds of the small impellers 16 and the large impellers 17 decrease successively from top to bottom. A notch 152 is provided on the bottom surface of the recovery chamber 15, and the recovery chamber 15 can be connected to the negative pressure chamber 13 through the notch 152.

[0057] The combined design of the small impeller 16 and the large impeller 17 can form an airflow inside the paint spray canister 5 that flows toward the recovery chamber 15. At the same time, the flow rate of the airflow decreases gradually from the center of the paint spray canister 5 to the outside, so that the vaporized paint inside the paint spray canister 5 can flow toward the center of the paint spray canister 5, thereby reducing the contact between the vaporized paint and the internal components of the paint spray canister 5 and preventing the paint from adhering to the internal components of the paint spray canister 5.

[0058] A rotating shaft 151 is rotatably installed inside the recovery chamber 15, a driving motor for driving the rotating shaft 151 to rotate is installed inside the negative pressure chamber 13, and a small impeller 16 is fixedly installed on the surface of the rotating shaft 151; a plurality of shaft seats are rotatably installed on the surface of the rotating shaft 151, and a plurality of groups of large impellers 17 are rotatably installed on the surfaces of the plurality of shaft seats respectively.

[0059] Small toothed discs 161 are fixedly mounted on the lower surfaces of the small impeller 16 and the large impeller 17, large toothed discs 171 are fixedly mounted on the upper surfaces of the multiple groups of large impellers 17, and transmission gears 18 are arranged between adjacent small toothed discs 161 and large toothed discs 171. The transmission gear 18 is composed of a coaxial large gear and a small gear. The large gear meshes with the small toothed disc 161, and the small gear meshes with the large toothed disc 171. The transmission gear 18 is rotatably mounted on the inner wall of the recovery chamber 15 through a shaft.

[0060] The blades of two adjacent impellers in a group of small impellers 16 and a plurality of groups of large impellers 17 are installed in opposite directions. The rotation of the rotating shaft 151 can drive the small impeller 16 and the large impeller 17 to rotate at the same time. At the same time, the blades between adjacent impellers are installed in opposite directions, so that the small impeller 16 and the large impeller 17 can generate airflows flowing in the same direction.

[0061] A baffle 153 is rotatably installed on the lower surface of the recovery chamber 15. The baffle 153 in a horizontal state is adapted to the slot 152 and is used to control the connection and closure between the recovery chamber 15 and the negative pressure chamber 13. A pneumatic rod 19 is provided on the inner wall of the negative pressure chamber 13. An L-shaped connecting rod 191 is rotatably installed on the lower end of the pneumatic rod 19. The connecting rod 191 is fixedly installed on the lower surface of the baffle 153. The rotation of the baffle 153 can be controlled by the cooperation between the pneumatic rod 19 and the connecting rod 191.

[0062] It comprises a guide rail frame 1, a chain rail 2 is installed inside the guide rail frame 1, and a plurality of hangers 3 are hung in the chain rail 2;

[0063] The paint spraying tube 5 is installed inside the paint spraying box 4 by sliding up and down through the support plate 20. A hydraulic rod 3 201 is installed on the lower surface of the support plate 20. The two side surfaces of the paint spraying box 4 corresponding to the moving direction of the hanger 3 are provided with openings 41.

[0064] When a plurality of top plates 51 are combined to form a top cover of the paint spray barrel 5, an opening is reserved on the surface of the top cover. Example

[0065] See also Figure 1-Figure 10 An automatic painting device includes a guide rail frame 1, a chain rail 2 is installed inside the guide rail frame 1, and a plurality of hangers 3 are hung in the chain rail 2; it also includes a paint spraying tube 5, the top cover of the paint spraying tube 5 is composed of a plurality of fan-shaped top plates 51, and the plurality of top plates 51 are rotatably installed on the outer surface of the paint spraying tube 5. The plurality of top plates 51 can be combined to form the top cover of the paint spraying tube 5, thereby closing the upper end of the paint spraying tube 5.

[0066] The paint spray barrel 5 is installed inside the paint spray box 4 by sliding up and down through the support plate 20. A hydraulic rod 3 201 is installed on the lower surface of the support plate 20. Openings 41 are provided on both side surfaces of the paint spray box 4 corresponding to the moving direction of the hanger 3. When multiple top plates 51 are combined into the top cover of the paint spray barrel 5, openings are reserved on the surface of the top cover.

[0067] An annular lower support seat 7 is fixedly installed on the inner wall of the paint spray tube 5, and an intermediate box 71 is fixedly installed on the upper surface of the lower support seat 7. An annular upper support seat 72 is slidably installed on the inner wall of the paint spray tube 5, and the upper support seat 72 is located above the intermediate box 71. A swivel 8 is rotatably installed on the inner surfaces of the lower support seat 7 and the upper support seat 72. Multiple groups of spray heads 9 are installed on the inner ring surface of the swivel 8. The rotation of the swivel 8 will drive the spray heads 9 to rotate together, so that the spray heads 9 can be used to perform rotational spraying of the casing.

[0068] A plurality of air cavities 12 are provided inside the middle box 71, and the air cavities 12 are connected with the inner wall and the space outside the top surface of the middle box 71 through a mesh plate. The air cavities 12 are designed to absorb the paint diffused to the outside of the casing during painting. A negative pressure cavity 13 is provided on the bottom surface inside the paint spray tube 5, and the air cavity 12 is connected with the negative pressure cavity 13 through a conduit 121, and negative pressure can be generated inside the air cavity 12 through the negative pressure cavity 13. An air intake pipe port 141 is provided on the bottom surface of the negative pressure cavity 13, and the air intake pipe port 141 is connected to an external negative pressure device for connecting the negative pressure cavity 13 with the negative pressure device. A recovery box 14 is connected below the air intake pipe port 141 for recovering paint.

[0069] A recovery chamber 15 is provided at a position below the center of the lower support seat 7. After the inner and outer surfaces of the casing are sprayed with paint, the vaporized paint floating in the internal space of the paint spray tube 5 is adsorbed and recovered. A group of small impellers 16 and multiple groups of large impellers 17 are provided inside the recovery chamber 15. A group of small impellers 16 and multiple groups of large impellers 17 are distributed in sequence from top to bottom in a cone shape. The rotation speeds of the small impellers 16 and the large impellers 17 decrease successively from top to bottom. A notch 152 is provided on the bottom surface of the recovery chamber 15, and the recovery chamber 15 can be connected to the negative pressure chamber 13 through the notch 152.

[0070] The combined design of the small impeller 16 and the large impeller 17 can form an airflow inside the paint spray canister 5 that flows toward the recovery chamber 15. At the same time, the flow rate of the airflow decreases gradually from the center of the paint spray canister 5 to the outside, so that the vaporized paint inside the paint spray canister 5 can flow toward the center of the paint spray canister 5, thereby reducing the contact between the vaporized paint and the internal components of the paint spray canister 5 and preventing the paint from adhering to the internal components of the paint spray canister 5.

[0071] The automatic painting device also includes a control system, which includes:

[0072] Position sensing module 1, the position sensing module 1 is installed inside the paint spray box 4, and the position sensing module 1 is connected to the driving part of the chain track 2 and the hydraulic circuit control system of the hydraulic rod 3 201 by electrical signals. When the chain track 2 drives the casing to move to the inside of the paint spray box 4 through the hanging part 3, the position sensing module 1 sends a stop signal to the driving part of the chain track 2, and sends a start signal to the hydraulic circuit control system of the hydraulic rod 3 201;

[0073] Position sensing module 2 is installed in the inner wall of the paint spray box 4. Position sensing module 2 is connected to the hydraulic circuit control system of hydraulic rod 1 61 and hydraulic rod 3 201 by electrical signals. When the paint spraying tube 5 moves upward by a certain distance, position sensing module 2 sends a start signal to the hydraulic circuit control system of hydraulic rod 1 61. When the housing enters the paint spraying position inside the paint spraying tube 5, position sensing module 2 sends a start signal to the hydraulic circuit control system of hydraulic rod 3 201.

[0074] The angle detection module is used to detect the angle between the top plate 51 and the horizontal plane. The angle detection module is connected to the hydraulic circuit control system of the hydraulic rod 1 61 and the hydraulic rod 2 11, as well as the driving device of the transmission rod 10 and the air pressure circuit control system of the pneumatic rod 1 92 by electrical signals. When the top plate 51 and the top surface of the paint spraying tube 5 are in a parallel state, the angle detection module sends a stop signal to the hydraulic circuit control system of the hydraulic rod 1 61, and at the same time sends a start signal to the hydraulic circuit control system of the hydraulic rod 2 11, the driving device of the transmission rod 10 and the air pressure circuit control system of the pneumatic rod 1 92, and sends an operation instruction to the paint spraying equipment, and the spray head 9 starts the paint spraying operation;

[0075] The time counting module is used to control the painting operation time of the nozzle 9 and the operation time of the small impeller 16 and the large impeller 17. The time counting module is connected to the driving device of the rotating shaft 151, the air pressure circuit control system of the pneumatic rod 19, the hydraulic circuit control system of the hydraulic rod 61, the driving device of the transmission rod 10, and the hydraulic circuit control system of the hydraulic rod 61 by electrical signals. The time counting module counts the painting time of the nozzle 9 and the running time of the rotating shaft 151, thereby sending a start or stop signal to the driving device of the rotating shaft 151, a stop signal to the air pressure circuit control system of the pneumatic rod 19, a stop signal to the hydraulic circuit control system of the hydraulic rod 61 and the driving device of the transmission rod 10, and a start signal to the hydraulic circuit control system of the hydraulic rod 61.

[0076] Working principle of automatic painting device:

[0077] First, hang the casing of the motor tail end that needs to be painted on the hanger 3, and use the chain track 2 to drive the hanger 3 to move, and the hanger 3 drives the casing that needs to be painted to move. When the casing moves to the inside of the paint spraying box 4, the position sensing module 1 senses the casing. At this time, the driving device of the chain track 2 no longer drives the chain track 2 to move. At the same time, the hydraulic rod 3 201, under the action of the hydraulic circuit control system, pushes the support plate 20 to move upward, and the support plate 20 drives the paint spraying tube 5 to move together.

[0078] When the paint spray can 5 moves upward, the casing at the lower end of the hanger 3 will enter the paint spray can 5. When the casing is completely entered into the paint spray can 5, the position sensing module 2 detects the moving stroke of the paint spray can 5. At this time, the hydraulic rod 1 61, under the action of the hydraulic circuit control system, pushes the support ring to move upward, and the support ring drives the push rod 6 to move together. Since the rotating connection surface between the top plate 51 and the outer surface of the paint spray can 5 is fixedly installed with a rotating rod 511, the surface of the rotating rod 511 is provided with a sliding groove, and the upper end of the push rod 6 is slidably installed in the sliding groove on the corresponding surface of the rotating rod 511. Therefore, the push rod 6 drives the top plate 51 to rotate through the rotating rod 511, and multiple top plates 51 are combined to form a top cover of the paint spray can 5, thereby closing the upper port of the paint spray can 5, and at the same time, the hydraulic rod 3 201 stops running.

[0079] When the top plate 51 rotates to a horizontal state, the angle detection module detects the position of the top plate 51. Accordingly, the relevant driving device drives the transmission rod 10 to rotate through one of the driving gears. The driving gears at both ends of the transmission rod 10 engage with the gear ring on the outer ring surface of the swivel 8 to drive the swivel 8 to rotate. The swivel 8 drives the nozzle 9 to rotate, and the nozzle 9 starts the painting operation.

[0080] At the same time, under the action of the hydraulic circuit control system, the hydraulic rod 2 11 is started, driving the upper support seat 72 to move up and down, and the pneumatic circuit control system controls the pneumatic rod 1 92 to start, and the pneumatic rod 1 92 drives the spray head 9 to rotate up and down, and the spray head 9 on the inner side of the lower support seat 7 sprays paint on the inner surface of the casing, and the spray head 9 on the inner side of the upper support seat 72 sprays paint on the outer surface and top surface of the casing.

[0081] When the casing is being painted, the baffle 153 and the slot 152 are in a mating state, and the air intake pipe port 141 creates a low pressure state inside the negative pressure chamber 13 through the negative pressure device. The vaporized paint diffused into the air outside the casing after the casing is painted enters the air cavity 12 through the mesh plate on the surface of the intermediate box 71, and enters the negative pressure chamber 13 through the conduit 121, and then the paint is recovered using the recovery box 14.

[0082] After the surface painting of the casing is completed, since the lower end of the pneumatic rod 19 is rotatably installed with an L-shaped connecting rod 191, and the connecting rod 191 is fixedly installed on the lower surface of the baffle 153, the pneumatic rod 19 controls the baffle 153 to separate from the slot 152 through the connecting rod 191. At this time, the recovery chamber 15 is connected to the negative pressure chamber 13, and the rotation of the rotating shaft 151 is controlled by the relevant driving equipment. The rotating shaft 151 drives the small impeller 16 to rotate, and the small impeller 16 drives the next large impeller 17 to rotate through the small toothed disc 161, the transmission gear 18 and the large toothed disc 171. The large impeller 17 drives the next large impeller 17 to rotate through the small toothed disc 161, the transmission gear 18 and the large toothed disc 171, so that the small impeller 16 and the large impeller 17 rotate in turn.

[0083] The small impeller 16 rotates at a fast speed, generating a high-speed airflow above it, while the large impeller 17 rotates at a slow speed, also generating a low-speed airflow above it, thereby driving the vaporized paint in the paint spray tube 5 to flow in the direction of the low-speed airflow, and with the assistance of the negative pressure chamber 13, the paint is recovered into the recovery box 14.

[0084] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic painting device, comprising a paint spraying tube (5), characterized in that: The top cover of the paint spray barrel (5) is composed of a plurality of fan-shaped top plates (51), and the plurality of top plates (51) are rotatably mounted on the outer surface of the paint spray barrel (5); An annular lower support seat (7) is fixedly mounted on the inner wall of the paint spray barrel (5), an intermediate box (71) is fixedly mounted on the upper surface of the lower support seat (7), an annular upper support seat (72) is slidably mounted on the inner wall of the paint spray barrel (5), the upper support seat (72) is located above the intermediate box (71), and a rotating ring (8) is rotatably mounted on the inner side surfaces of the lower support seat (7) and the upper support seat (72), and a plurality of groups of spray heads (9) are mounted on the inner ring surface of the rotating ring (8); The interior of the intermediate box (71) is provided with a plurality of groups of air cavities (12), the air cavities (12) being in communication with the inner side wall and the space outside the top surface of the intermediate box (71) through a mesh plate, the bottom surface of the interior of the paint spraying tube (5) being provided with a negative pressure cavity (13), the air cavities (12) being in communication with the negative pressure cavity (13) through a conduit (121); A recovery chamber (15) is provided at a position below the center of the lower support seat (7), and a group of small impellers (16) and a plurality of groups of large impellers (17) are provided inside the recovery chamber (15). The group of small impellers (16) and the plurality of groups of large impellers (17) are arranged in sequence from top to bottom and in a cone shape, and the rotation speeds of the small impellers (16) and the large impellers (17) decrease in sequence from top to bottom. A notch (152) is provided on the bottom surface of the recovery chamber (15), and the recovery chamber (15) can be connected to the negative pressure chamber (13) through the notch (152).

2. The automatic painting device according to claim 1, wherein: A rotating rod (511) is fixedly mounted on the rotating connection surface between the top plate (51) and the outer surface of the paint spraying tube (5), and a sliding groove is provided on the surface of the rotating rod (511); A support ring is slidably mounted on the outer surface of the paint spray barrel (5) up and down, a plurality of push rods (6) are fixedly mounted on the upper surface of the support ring, the upper ends of the push rods (6) are slidably mounted in the slide grooves on the surfaces of the corresponding rotating rods (511), and a hydraulic rod 1 (61) is mounted on the lower surface of the support ring.

3. The automatic painting device according to claim 2, wherein: A second hydraulic rod (11) is provided between the middle box (71) and the upper support seat (72); A transmission rod (10) is rotatably mounted inside the middle box (71), the transmission rod (10) being a telescopic rod, the upper end of the transmission rod (10) extending to the inside of the upper support seat (72); The outer ring surface of the rotating ring (8) is provided with a gear ring, and the upper and lower end surfaces of the transmission rod (10) are provided with driving gears, and the two driving gears are respectively meshed with the gear rings on the outer ring surface of the rotating ring (8) inside the lower support seat (7) and the upper support seat (72).

4. The automatic painting device according to claim 3, wherein: The nozzle (9) is mounted on the inner surface of the rotating ring (8) via a support (91) so as to rotate up and down, and a pneumatic rod (92) for controlling the rotation of the nozzle (9) is mounted on the surface of the support (91).

5. The automatic painting device according to claim 4, wherein: A rotating shaft (151) is rotatably mounted inside the recovery chamber (15), and the small impeller (16) is fixedly mounted on the surface of the rotating shaft (151); A plurality of shaft seats are rotatably mounted on the surface of the rotating shaft (151), and a plurality of groups of large impellers (17) are rotatably mounted on the surfaces of the plurality of shaft seats respectively; A small toothed disc (161) is fixedly mounted on the lower surface of the small impeller (16) and the large impeller (17); a large toothed disc (171) is fixedly mounted on the upper surface of the plurality of groups of large impellers (17); a transmission gear (18) is arranged between adjacent small toothed discs (161) and large toothed discs (171); the transmission gear (18) is composed of a coaxial large gear and a small gear; the large gear meshes with the small toothed disc (161); the small gear meshes with the large toothed disc (171); and the transmission gear (18) is rotatably mounted on the inner wall of the recovery chamber (15) via a shaft; The blades of two adjacent impellers in one group of small impellers (16) and in two groups of large impellers (17) are installed in opposite directions.

6. The automatic painting device according to claim 5, wherein: A baffle (153) is rotatably mounted on the lower surface of the recovery chamber (15), and the baffle (153) in a horizontal state is adapted to the notch (152); The inner wall of the negative pressure chamber (13) is provided with a second pneumatic rod (19), the lower end of the second pneumatic rod (19) is rotatably mounted with an L-shaped connecting rod (191), and the connecting rod (191) is fixedly mounted on the lower surface of the baffle (153).

7. The automatic painting device according to claim 6, wherein: It also comprises a guide rail frame (1), a chain rail (2) is installed inside the guide rail frame (1), and a plurality of hangers (3) are hung in the chain rail (2); The paint spraying tube (5) is installed inside the paint spraying box (4) by sliding up and down through a support plate (20); a hydraulic rod 3 (201) is installed on the lower surface of the support plate (20); and openings (41) are provided on both side surfaces of the paint spraying box (4) corresponding to the moving direction of the hanging part (3); When a plurality of the top plates (51) are combined to form a top cover of the paint spray barrel (5), an opening is reserved on the surface of the top cover.

8. The automatic painting device according to claim 7, wherein: Also included is a control system, the control system comprising: A position sensing module 1, the position sensing module 1 being installed inside the paint spray box (4), the position sensing module 1 being connected to the driving element of the chain track (2) and the hydraulic circuit control system of the hydraulic rod 3 (201) by electrical signals; A second position sensing module is installed in the inner wall of the paint spray box (4), and the second position sensing module is connected to the hydraulic circuit control system of the first hydraulic rod (61) and the third hydraulic rod (201) via an electrical signal; An angle detection module, used for detecting the angle between the top plate (51) and the horizontal plane, wherein the angle detection module is connected to the hydraulic circuit control system of the hydraulic rod 1 (61), the hydraulic rod 2 (11), the driving device of the transmission rod (10), and the pneumatic circuit control system of the pneumatic rod 1 (92) by electrical signals; A time counting module is used to control the painting operation time of the spray head (9) and the operation time of the small impeller (16) and the large impeller (17), and the time counting module is connected to the driving device of the rotating shaft (151), the air pressure circuit control system of the pneumatic rod 2 (19), and the hydraulic circuit control system of the hydraulic rod 1 (61) by electrical signals.

9. The automatic painting device according to claim 8, wherein: An air suction pipe opening (141) is provided at the bottom of the negative pressure chamber (13), the air suction pipe opening (141) is externally connected to a negative pressure device, and a recovery box (14) is connected below the air suction pipe opening (141).

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