Spraying device for surface treatment of automobile plastic part

Abstract

The invention relates to the technical field of spraying, in particular to an automobile plastic part surface treatment spraying device which comprises a bottom plate, a placing frame is fixed to the top of the bottom plate, a fixing mechanism and a cleaning mechanism are arranged in the placing frame, a cushion plate is fixed to the side edge of the placing frame, and a paint spraying mechanical arm is installed at the top of the cushion plate. A first spray head is installed at one end of the paint spraying mechanical arm, a protective cover is fixed to the top of the bottom plate, a double-shaft motor drives a threaded rod to rotate, the threaded rod can drive two threaded blocks to move reversely in a groove when rotating, and then the two threaded blocks move reversely to drive two supporting plates to move reversely. The distance between the two supporting plates can be adjusted to be suitable for the length of the plastic part, then the automobile plastic part such as a front bumper and a rear bumper is placed on the tops of the supporting plates, then the bottom of the plastic part makes contact with a suction cup, an air pump in the hollow base is started, air in the suction cup is pumped out through an air pipe, and then the suction cup adsorbs and fixes the plastic part.

Description

Technical Field

[0001] The invention relates to the technical field of spraying, and in particular to a spraying device for surface treatment of automobile plastic parts. Background Art

[0002] One of the steps in the surface treatment of automotive plastic parts is surface painting. After painting, a firmly attached continuous film will be formed on the surface of the plastic parts, which can prevent chemical or electrochemical reactions between the surface of the car body and the surrounding medium, thereby preventing or delaying the occurrence of damage to the car, such as rust and corrosion, and effectively extending the service life of the car.

[0003] After searching, the patent with application number CN214515409U proposes "a kind of automobile plastic parts spraying device". When in use, the plastic parts can be placed on the grid table, and the second handle can be rotated to make the rubber clamp clamp the spray object. The fixing devices on the four sides can clamp irregular objects. The spring plays an adjusting and buffering role, so that the rubber clamp will not be too tight to damage the spray object when clamping, nor will it be too loose to cause the spray object to fall. After clamping and fixing, spraying can be carried out. However, when the device clamps the spray object, the position where the rubber clamp clamps the plastic part will be blocked by the rubber clamp, and then this place will not be sprayed when spraying, and then the plastic part will need to be painted again after painting, which seriously affects the efficiency of painting. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the background technology that the position where the rubber clamp blocks the plastic part will be blocked by the rubber clamp, which will cause this place to not be sprayed during paint spraying, and further cause the plastic part to need to be painted again after painting, seriously affecting the efficiency of painting, and a spray device for surface treatment of automobile plastic parts is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a spraying device for surface treatment of automobile plastic parts, comprising: a base plate, a placement frame is fixed on the top of the base plate, a fixing mechanism and a cleaning mechanism are arranged inside the placement frame, a pad is fixed on the side of the placement frame, a paint spraying robot arm is installed on the top of the pad, a first nozzle is installed on one end of the paint spraying robot arm, and a protective cover is fixed on the top of the base plate, and the protective cover covers the placement frame to prevent paint splashing.

[0006] As a further solution of the present invention, the fixing mechanism includes a groove arranged on the inner side of the placement frame, a threaded rod is rotatably connected inside the groove, a threaded block is slidably connected inside the groove, the threaded rod passes through the threaded block and is rotatably connected to the threaded block, a support plate is fixed to one end of the threaded block, a dual-axis motor is fixed to the outside of the placement frame and the output end of the dual-axis motor is fixedly connected to one end of the threaded rod.

[0007] As a further solution of the present invention, a hollow seat is fixed on the top of the support plate, a pump for extraction and exhaust is installed inside the hollow seat, a suction cup is fixed on the top of the hollow seat, and the air pump is connected to an air pipe.

[0008] As a further solution of the present invention, a box is fixed on the top of the bottom plate, the interior of the box is divided into a first chamber and a second chamber, a rotating motor is installed on the top of the box, the output end of the rotating motor passes through the interior of the first chamber and is fixed with a stirring blade.

[0009] As a further solution of the present invention, a filter screen is fixed inside the placement frame, and the filter screen is used to filter impurities in the fallen paint. A discharge pipe is arranged at the bottom of the placement frame.

[0010] As a further solution of the present invention, the cleaning mechanism is used for filtering cleaning and preventing blockage, and the cleaning mechanism includes two support blocks fixedly arranged at the bottom of the support plate, and the two support blocks are internally rotatably connected with brushes, one end of the brush is fixed with a gear, and the inner side of the placement frame is fixed with a rack, and the gear is located at the top of the rack and meshes with the rack, and a scraper is fixed to the bottom of the support plate, and the bottom of the scraper is in contact with the top of the filter, and a second nozzle is installed on the side of the scraper.

[0011] As a further solution of the present invention, two groups of opposite threads are arranged on the outside of the threaded rod, a first pulley is fixed to the other end of the dual-axis motor, a vertical plate is fixed to the top of the base plate, a second pulley is rotatably connected to the vertical plate, the first pulley is connected to the second pulley by a belt, a first cylinder is fixed to the second pulley, and the output end of the first cylinder passes through the second pulley and the vertical plate and is fixed with a diamond block.

[0012] As a further solution of the present invention, the placement frame is internally rotatably connected with a circular shaft, one end of the circular shaft is located outside the placement frame and is provided with a diamond-shaped groove, a pressure block is fixed to the outside of the circular shaft, two rectangular plates are fixed to the bottom of the filter screen, a sealing cover is fixed to the outside of the first rectangular plate, a second cylinder is installed inside the sealing cover, and a slot is provided on the inner side of the second rectangular plate.

[0013] As a further solution of the present invention, two feeding pipes are arranged outside the box body, and the two feeding pipes are respectively connected to the first chamber and the second chamber.

[0014] As a further solution of the present invention, an oil pump and a water pump are installed at the top of the base plate at the position of the box, the paint spraying robot arm is connected to a first pipe, the water pump is connected to a second pipe, the end of the first pipe is located inside the first chamber and the top of the first pipe is connected to the first nozzle, the end of the second pipe is located inside the second chamber and the top of the second pipe is connected to the second nozzle, and the length of the second pipe is equal to the length of the placement frame.

[0015] The invention provides a spraying device for surface treatment of automobile plastic parts, which has the following beneficial effects:

[0016] 1. Through the setting fixing mechanism, start the double-axis motor to drive the threaded rod to rotate. Since the outside of the threaded rod is provided with two sets of opposite threads, when the threaded rod rotates, it will drive the two threaded blocks to move in opposite directions in the groove. Then the two threaded blocks move in opposite directions and bring the two support plates to move in opposite directions, which is conducive to adjusting the distance between the two support plates to make it suitable for the length of the plastic parts. Then, the automobile plastic parts such as the front and rear bumpers are placed on the top of the support plates, and then the bottom of the plastic parts are in contact with the suction cup. Then the air pump inside the hollow seat is started, and the air in the suction cup is extracted through the air pipe. Then the suction cup absorbs the plastic parts. This application is passed By fixing the plastic part at the bottom, the plastic part can be sprayed as a whole, effectively solving the problems in the background technology. After fixing, the oil pump and the paint spraying robot arm are started, and then the paint in the first chamber, especially under the action of the oil pump, enters the first nozzle of the paint spraying robot arm from the first pipe and is sprayed out. The paint spraying robot arm is convenient for adjusting the position of the paint spraying. The protective cover covers the entire placement frame to prevent paint from splashing. Part of the sprayed paint will fall and then pass through the filter net to filter out impurities and store them at the bottom of the placement frame. When the storage volume reaches a certain level, the discharge pipe is opened, and then the paint in the placement frame is collected through the container and waits for the next use to save costs.

[0017] 2. Through the cleaning mechanism set up, the filter needs to be cleaned after a certain period of use. The cleaning needs to be carried out when there is no paint on the bottom of the placement frame. The water pump is started to inject the clean water in the second chamber into the inside of the second nozzle through the second pipe. The support plate moves with the second nozzle to spray water to wet the filter for subsequent cleaning. It is beneficial to increase the range of water spraying through the movement of the support plate, and the movement of the support plate will drive the scraper and the brush to move. The movement of the scraper is beneficial to scrape off impurities on the surface of the filter. Since the gear at one end of the brush is meshed with the rack, the brush will also rotate when it moves. The cleaning effect is further improved by the rotation of the brush. Then the second nozzle continues to spray water to flush the impurities cleaned from the filter to the bottom of the placement frame. After that, the discharge pipe is opened to discharge the cleaned waste water, which is beneficial to achieve overall cleaning of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the appearance structure proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the top structure of the base plate proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the bottom structure of the support plate proposed by the present invention;

[0021] Figure 4 This is a schematic diagram of the fixing mechanism structure proposed by the present invention;

[0022] Figure 5 A schematic diagram of the structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of location B proposed by the present invention;

[0024] Figure 7 A schematic diagram of the internal structure of the placement frame proposed by the present invention;

[0025] Figure 8 This is a schematic diagram of the internal structure of the box body proposed by the present invention.

[0026] In the figure: 1, bottom plate; 2, placement frame; 3, fixing mechanism; 301, groove; 302, threaded rod; 303, threaded block; 304, support plate; 305, double-axis motor; 306, hollow seat; 307, air pump; 308, suction cup; 309, air pipe; 4, cleaning mechanism; 401, support block; 402, brush; 403, gear; 404, rack; 405, scraper; 406, second nozzle; 407, first pulley; 408, vertical plate; 40 9. Second pulley; 410. First cylinder; 411. Diamond block; 412. Round shaft; 413. Diamond groove; 414. Press block; 415. Rectangular plate; 416. Sealing cover; 417. Second cylinder; 418. Slot; 5. Pad; 6. Paint spraying robot arm; 7. First nozzle; 8. Box; 9. First chamber; 10. Second chamber; 11. Rotating motor; 12. Stirring blade; 13. Filter; 14. Feed pipe; 15. Discharge pipe; 16. Protective cover. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of its embodiments based on the overall structure of the present invention.

[0029] Reference Figure 1 , Figure 2 A spraying device for surface treatment of automobile plastic parts comprises: a bottom plate 1, a placing frame 2 is fixed on the top of the bottom plate 1, a fixing mechanism 3 and a cleaning mechanism 4 are arranged inside the placing frame 2, a pad 5 is fixed on the side of the placing frame 2, a paint spraying robot arm 6 is installed on the top of the pad 5, a first nozzle 7 is installed at one end of the paint spraying robot arm 6, a protective cover 16 is fixed on the top of the bottom plate 1, the protective cover 16 covers the placing frame 2 to prevent paint from splashing, the oil pump and the paint spraying robot arm 6 are started, and then the paint in the first chamber 9, especially under the action of the oil pump, enters the first nozzle 7 of the paint spraying robot arm 6 from the first pipe and is sprayed out, the paint spraying robot arm 6 is convenient for adjusting the position of the paint spraying, and the model of the paint spraying robot arm 6 is BRTIRSE2013A.

[0030] Reference Figure 2 , Figure 4 , Figure 5The fixing mechanism 3 includes a groove 301 arranged on the inner side of the placement frame 2, a threaded rod 302 is rotatably connected inside the groove 301, a threaded block 303 is slidably connected inside the groove 301, the threaded rod 302 penetrates the threaded block 303 and is rotatably connected to the threaded block 303, a support plate 304 is fixed to one end of the threaded block 303, a dual-axis motor 305 is fixed to the outside of the placement frame 2 and the output end of the dual-axis motor 305 is fixedly connected to one end of the threaded rod 302, a hollow seat 306 is fixed to the top of the support plate 304, a dual-purpose air pump 307 for extraction and exhaust is installed inside the hollow seat 306, a suction cup 308 is fixed to the top of the hollow seat 306, and the air pump 307 is connected to an air pipe 309.

[0031] It should be noted that, when the dual-axis motor 305 is started, the threaded rod 302 is driven to rotate. Since two sets of opposite threads are arranged on the outside of the threaded rod 302, when the threaded rod 302 rotates, the two threaded blocks 303 are driven to move in opposite directions in the groove 301. Then, the two threaded blocks 303 move in opposite directions and bring the two support plates 304 to move in opposite directions, which is conducive to adjusting the distance between the two support plates 304 to make it suitable for the length of the plastic part. Then, the automobile plastic part such as the front and rear bumpers are placed on the top of the support plate 304, and then the bottom of the plastic part contacts the suction cup 308. Then, the air pump 307 inside the hollow seat 306 is started, and the air in the suction cup 308 is extracted through the air pipe 309. Then, the suction cup 308 absorbs the plastic part. The present application fixes the plastic part at the bottom so that the plastic part can be sprayed as a whole, which effectively solves the problems in the background technology.

[0032] Reference Figure 8 A box body 8 is fixed on the top of the bottom plate 1, and the interior of the box body 8 is divided into a first chamber 9 and a second chamber 10. A rotating motor 11 is installed on the top of the box body 8, and the output end of the rotating motor 11 passes through the interior of the first chamber 9 and is fixed with a stirring blade 12. Two feeding pipes 14 are arranged outside the box body 8, and the two feeding pipes 14 are connected to the first chamber 9 and the second chamber 10 respectively. An oil pump and a water pump are installed on the top of the bottom plate 1 at the position of the box body 8. The paint spraying robot arm 6 is connected to a first pipeline, and the water pump is connected to There is a second pipe, the end of the first pipe is located inside the first chamber 9 and the top of the first pipe is connected to the first nozzle 7, the end of the second pipe is located inside the second chamber 10 and the top of the second pipe is connected to the second nozzle 406, the length of the second pipe is equal to the length of the placement frame 2, and two feeding pipes 14 are used to facilitate adding paint to the inside of the first chamber 9 and adding clean water to the inside of the second chamber 10, and then the rotating motor 11 is started to drive the stirring blade 12 to rotate, which is beneficial to prevent condensation and blockage of the first pipe, especially in winter.

[0033] Reference Figure 3, Figure 6 A filter screen 13 is fixed inside the placement frame 2, and the filter screen 13 is used to filter impurities in the fallen paint. A discharge pipe 15 is provided at the bottom of the placement frame 2. The cleaning mechanism 4 is used to clean and prevent the filter screen 13. The cleaning mechanism 4 includes two support blocks 401 fixed at the bottom of the support plate 304, and the two support blocks 401 are internally rotatably connected with a brush 402. A gear 403 is fixed at one end of the brush 402. A rack 404 is fixed on the inner side of the placement frame 2, and the gear 403 is located at the top of the rack 404 and meshes with the rack 404. A scraper is fixed at the bottom of the support plate 304. The scraper 405 has a bottom that contacts the top of the filter screen 13, a second nozzle 406 is installed on the side of the scraper 405, two sets of opposite threads are arranged on the outside of the threaded rod 302, a first pulley 407 is fixed to the other end of the dual-axis motor 305, a vertical plate 408 is fixed to the top of the bottom plate 1, a second pulley 409 is rotatably connected to the vertical plate 408, the first pulley 407 is connected to the second pulley 409 by a belt, a first cylinder 410 is fixed to the second pulley 409, and an output end of the first cylinder 410 passes through the second pulley 409 and the vertical plate 408 and is fixed with a diamond block 411.

[0034] It can be concluded that the filter 13 needs to be cleaned after a certain period of use, and the cleaning needs to be carried out when there is no paint on the bottom of the placement frame 2. The water pump is started to inject the clean water in the second chamber 10 into the interior of the second nozzle 406 through the second pipe. The support plate 304 moves with the second nozzle 406 to spray water to wet the filter 13 for subsequent cleaning, which is beneficial to increase the range of water spraying through the movement of the support plate 304, and the support plate 304 will drive the scraper 405 and the brush 402 to move when it moves. The movement of the scraper 405 is beneficial to scrape off the impurities on the surface of the filter 13. Since the gear 403 at one end of the brush 402 is meshed with the rack 404, the brush 402 will also rotate when it moves. The cleaning effect is further improved by the rotation of the brush 402, and then the second nozzle 406 continues to spray water to flush the impurities cleaned by the filter 13 to the bottom of the placement frame 2, and then the discharge pipe 15 is opened to discharge the cleaned waste water, which is beneficial to achieve overall cleaning of the filter 13.

[0035] Reference Figure 7The inside of the placing frame 2 is rotatably connected with a circular shaft 412, one end of the circular shaft 412 is located outside the placing frame 2 and is provided with a diamond groove 413, a pressing block 414 is fixed to the outside of the circular shaft 412, two rectangular plates 415 are fixed to the bottom of the filter screen 13, a sealing cover 416 is fixed to the outside of the first rectangular plate 415, a second cylinder 417 is installed inside the sealing cover 416, a slot 418 is provided on the inner side of the second rectangular plate 415, the output end of the first cylinder 410 extends out with the diamond block 411 into the inside of the diamond groove 413, which is conducive to completing the connection between the first cylinder 410 and the circular shaft 412, and then the output end of the second cylinder 417 extends out and is inserted into the inside of the slot 418, and the sealing cover 416 is conducive to the second cylinder 4 17 protection, which is conducive to connecting the two rectangular plates 415. The filter screen 13 is made of elastic material and can be reset after deformation. When the dual-axis motor 305 is started, the round shaft 412 and the pressure block 414 will be driven to rotate by belt transmission. When the pressure block 414 rotates, it will enter between the two rectangular plates 415 and press the output end of the second cylinder 417. Then, as the pressure block 414 continues to rotate, the filter screen 13 will be pulled downward to make it funnel-shaped. After that, the output end of the second cylinder 417 will retract and leave the slot 418. Then, the pressure block 414 will not be able to continue to apply pressure to the output end of the second cylinder 417. Then, the filter screen 13 will be elastically reset and reciprocatingly rebound. The impurities blocking the mesh of the filter screen 13 will be ejected through the rebound effect, which is conducive to achieving the purpose of preventing blockage.

[0036] Working principle: paint is added to the inside of the first chamber 9 through two feeding pipes 14, and clean water is added to the inside of the second chamber 10. Then the rotating motor 11 is started to drive the stirring blade 12 to rotate, which is helpful to prevent condensation from blocking the first pipeline, especially in winter. The dual-axis motor 305 is started to drive the threaded rod 302 to rotate. Since the outer side of the threaded rod 302 is provided with two sets of opposite threads, when the threaded rod 302 rotates, it will drive the two threaded blocks 303 to move in the opposite direction in the groove 301. Then the two threaded blocks 303 move in the opposite direction and drive the two support plates 304 to move in the opposite direction, which is helpful to adjust the distance between the two support plates 304 to make it suitable for the length of the plastic parts. Then, the automobile plastic parts such as the front and rear bumpers are placed on the top of the support plate 304, and then the bottom of the plastic parts is connected with the suction cup 308. After the plastic is in contact with the paint, the air pump 307 inside the hollow seat 306 is started, and the air in the suction cup 308 is extracted through the air pipe 309, and then the suction cup 308 absorbs the plastic part. The present application fixes the plastic part at the bottom, so that the plastic part can be sprayed as a whole. After fixing, the oil pump and the paint spraying robot arm 6 are started, and then the paint in the first chamber 9, especially under the action of the oil pump, enters the first nozzle 7 of the paint spraying robot arm 6 from the first pipe and is sprayed out. The paint spraying robot arm 6 is convenient for adjusting the position of the paint spraying. The protective cover 16 covers the placement frame 2 as a whole to prevent paint splashing. A part of the sprayed paint will fall and then pass through the filter net 13 to filter out impurities and store them at the bottom of the placement frame 2. When the storage volume reaches a certain level, the discharge pipe 15 is opened, and then the paint in the placement frame 2 is collected through the container and waits for the next use to save costs.

[0037] The cleaning process is as follows: when the filter screen 13 is cleaned, the filter screen 13 is wetted with water and the cleaning agent is used to clean the filter screen 13. When the filter screen 13 is cleaned, the filter screen 13 is wetted with water and the cleaning agent is used to clean the filter screen 13. When the filter screen 13 is cleaned, the filter screen 13 is wetted with water and the cleaning agent is used to clean the filter screen 13. When the filter screen 13 is cleaned, the filter screen 13 is wetted with water and the cleaning agent is used to clean the filter screen 13. When the filter screen 13 is cleaned, the filter screen 13 is wetted with water and the cleaning agent is used to clean the filter screen 13. When the filter screen 13 is cleaned, the filter screen 13 is wetted with water and the cleaning agent is used to clean the filter screen 13. When the filter screen 13 is cleaned, the filter screen 13 is wetted with water and the cleaning agent is used to clean the filter screen 13. When the filter screen 13 is cleaned, the filter screen 13 is wetted with water and the cleaning agent is used to clean the filter screen 13. When the filter screen 13 is cleaned, the filter screen 13 is wetted with water and the cleaning agent is used to clean the filter screen 13.

[0038] When the mesh of the filter screen 13 is clogged, the output end of the first cylinder 410 extends with the diamond block 411 into the interior of the diamond groove 413, which is conducive to connecting the first cylinder 410 with the circular shaft 412. Then the output end of the second cylinder 417 extends and inserts into the interior of the slot 418. The sealing cover 416 is conducive to protecting the second cylinder 417 and connecting the two rectangular plates 415. The filter screen 13 is made of elastic material and can be reset after deformation. When the dual-axis motor 305 is started, it will drive the circular shaft 412 and The pressing block 414 rotates, and when the pressing block 414 rotates, it enters between the two rectangular plates 415 and presses the output end of the second cylinder 417. Then, as the pressing block 414 continues to rotate, it pulls the filter screen 13 downward to make it funnel-shaped. After that, the output end of the second cylinder 417 retracts and leaves the slot 418. Then, the pressing block 414 can no longer apply pressure to the output end of the second cylinder 417. Then, the filter screen 13 elastically resets and rebounds back and forth. Impurities that block the mesh of the filter screen 13 are ejected through the rebound action, which is beneficial to achieve the purpose of preventing blockage.

[0039] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spraying device for surface treatment of automobile plastic parts, comprising: A base plate (1) is characterized in that: a placement frame (2) is fixed on the top of the base plate (1), a fixing mechanism (3) and a cleaning mechanism (4) are arranged inside the placement frame (2), a pad (5) is fixed on the side of the placement frame (2), a paint spraying robot arm (6) is installed on the top of the pad (5), a first nozzle (7) is installed at one end of the paint spraying robot arm (6), and a protective cover (16) is fixed on the top of the base plate (1), and the protective cover (16) covers the placement frame (2) to prevent paint splashing.

2. A spraying device for surface treatment of automobile plastic parts according to claim 1, characterized in that: The fixing mechanism (3) comprises a groove (301) arranged inside the placement frame (2), a threaded rod (302) is rotatably connected inside the groove (301), a threaded block (303) is slidably connected inside the groove (301), the threaded rod (302) passes through the threaded block (303) and is rotatably connected to the threaded block (303), a support plate (304) is fixed to one end of the threaded block (303), a dual-axis motor (305) is fixed to the outside of the placement frame (2), and the output end of the dual-axis motor (305) is fixedly connected to one end of the threaded rod (302).

3. A spraying device for surface treatment of automobile plastic parts according to claim 2, characterized in that: A hollow seat (306) is fixed on the top of the support plate (304), an air pump (307) for both pumping and exhausting is installed inside the hollow seat (306), a suction cup (308) is fixed on the top of the hollow seat (306), and an air pipe (309) is connected to the air pump (307).

4. The spraying device for surface treatment of automobile plastic parts according to claim 1, characterized in that: A box body (8) is fixed on the top of the bottom plate (1), the interior of the box body (8) is divided into a first chamber (9) and a second chamber (10), a rotating motor (11) is installed on the top of the box body (8), the output end of the rotating motor (11) passes through the interior of the first chamber (9) and is fixed with a stirring blade (12).

5. The spraying device for surface treatment of automobile plastic parts according to claim 1, characterized in that: A filter screen (13) is fixed inside the placement frame (2), and the filter screen (13) is used to filter impurities in the fallen paint. A discharge pipe (15) is arranged at the bottom of the placement frame (2).

6. The spraying device for surface treatment of automobile plastic parts according to claim 1, characterized in that: The cleaning mechanism (4) comprises two support blocks (401) fixedly arranged at the bottom of a support plate (304), brushes (402) being rotatably connected inside the two support blocks (401), a gear (403) being fixed at one end of the brush (402), a rack (404) being fixed on the inner side of the placement frame (2), a scraper (405) being fixed at the bottom of the support plate (304), and a second nozzle (406) being installed on the side of the scraper (405).

7. A spraying device for surface treatment of automobile plastic parts according to claim 2, characterized in that: The threaded rod (302) is provided with two sets of opposite threads on the outside, a first pulley (407) is fixed to the other end of the dual-axis motor (305), a vertical plate (408) is fixed to the top of the base plate (1), the vertical plate (408) is rotatably connected to a second pulley (409), the first pulley (407) and the second pulley (409) are connected by a belt, the second pulley (409) is fixed with a first cylinder (410), and the output end of the first cylinder (410) passes through the second pulley (409) and the vertical plate (408) and is fixed with a diamond block (411).

8. The spraying device for surface treatment of automobile plastic parts according to claim 1, characterized in that: A circular shaft (412) is rotatably connected inside the placement frame (2), one end of the circular shaft (412) is located outside the placement frame (2) and is provided with a diamond-shaped groove (413), and a pressing block (414) is fixed outside the circular shaft (412).

9. The spraying device for surface treatment of automobile plastic parts according to claim 4, characterized in that: Two feeding pipes (14) are arranged outside the box body (8), and the two feeding pipes (14) are respectively connected to the first chamber (9) and the second chamber (10).

10. The spraying device for surface treatment of automobile plastic parts according to claim 1, characterized in that: An oil pump and a water pump are installed at the top of the base plate (1) located at the position of the box (8), the paint spraying robot arm (6) is connected to a first pipe, and the water pump is connected to a second pipe. The end of the first pipe is located inside the first chamber (9) and the top of the first pipe is connected to the first nozzle (7), the end of the second pipe is located inside the second chamber (10) and the top of the second pipe is connected to the second nozzle (406), and the length of the second pipe is equal to the length of the placement frame (2).

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