CN113967548B

CN113967548B - Automatic spraying robot with thickness detection function

Info

Publication number: CN113967548B
Application number: CN202111183531.5A
Authority: CN
Inventors: 林立华; 闫东波; 张建斌; 叶黎鹏; 姜安龙; 林路宇; 杨峻一; 刘艳
Original assignee: Xiamen Road And Bridge Engineering Design Institute Co ltd; Chongqing Special Engineering Technology Co ltd
Current assignee: Xiamen Road And Bridge Engineering Design Institute Co ltd; Chongqing Special Engineering Technology Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-09-27
Anticipated expiration: 2041-10-11
Also published as: CN113967548A

Abstract

The invention relates to the field of spraying equipment, in particular to an automatic spraying robot with a thickness detection function, which comprises a spraying room and an equipment room, wherein a mechanical arm is arranged in the spraying room, a spray head is arranged on the mechanical arm, and the automatic spraying robot further comprises: the detection mechanism is used for detecting the thickness of the coating and is arranged on the mechanical arm and synchronously moves along with the spray head; the feeding mechanism is arranged in the equipment room and used for conveying the coating, and the feeding mechanism drives the cleaning mechanism to clean the detection mechanism in real time; the mixed filtering mechanism is arranged in the equipment room and is in transmission connection with the feeding mechanism, and the mixed filtering mechanism is used for mixing and filtering the coating and conveying the coating to the spray head through the feeding mechanism. This kind of automatic spraying robot with thickness detects function realizes detecting the coating thickness in real time, need not to shut down and carry out artifical a lot of and detect, improves work efficiency greatly, improves the spraying quality moreover, ensures the thickness detector to the accuracy that the coating thickness detected.

Description

Automatic spraying robot with thickness detection function

Technical Field

The invention relates to the field of spraying equipment, in particular to an automatic spraying robot with a thickness detection function.

Background

The surface of the workpiece is sprayed with a layer of coating, so that the workpiece can be decorated on one hand and protected on the other hand, but the thickness of the sprayed coating usually has certain requirements. The existing spraying equipment cannot detect the thickness of a coating in real time when spraying a workpiece, a thickness detector is required to detect the thickness of the coating after spraying is stopped, operation is complex, time and labor are wasted, and repeated measurement is often required, so that production efficiency is low.

Disclosure of Invention

The present invention is directed to an automatic coating robot with thickness detection function, so as to solve the problems of the background art mentioned above. In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automatic spraying robot with thickness detects function, includes spraying room and equipment room, and the inside arm that is provided with in spraying room is provided with the shower nozzle on the arm, still includes:

the detection mechanism is used for detecting the thickness of the coating and is arranged on the mechanical arm and synchronously moves along with the spray head;

the feeding mechanism is arranged in the equipment room and used for conveying the coating, and the feeding mechanism drives the cleaning mechanism to clean the detection mechanism in real time;

the mixed filtering mechanism is arranged in the equipment room and is in transmission connection with the feeding mechanism, and the mixed filtering mechanism is used for mixing and filtering the coating and conveying the coating to the spray head through the feeding mechanism.

Preferably, the feeding mechanism comprises a motor and a first pump wheel which are fixed in the equipment room, an output shaft of the motor is in transmission connection with a rotating shaft, the rotating shaft is in transmission connection with an impeller of the first pump wheel, the rotating shaft is simultaneously in transmission connection with the cleaning mechanism and the mixing and filtering mechanism, the side wall of the first pump wheel is fixed and communicated with the first liquid pipe, one end of the first liquid pipe is communicated with the mixing and filtering mechanism, and the other end of the first liquid pipe is communicated with the spray head.

Preferably, mix filter mechanism including fixing the mixing drum at the equipment room inner wall, liquid pipe one is linked together with the lateral wall upper end of mixing drum, and the inside bottom surface of mixing drum is fixed with the bulge loop, and the diapire of mixing drum is fixed and is linked together liquid pipe four, and liquid pipe four is located the inboard of bulge loop with the one end that the mixing drum is connected, and liquid pipe four keeps away from the one end of mixing drum and is linked together with the coating case.

Preferably, the inside of a mixing drum is provided with the cartridge filter, and is fixed with a plurality of puddlers on the lateral wall of cartridge filter, and the lower pot head of cartridge filter is established and the dead axle rotates to be connected on the lateral wall of bulge loop, and the last port of cartridge filter is fixed with the apron, is fixed with the axle sleeve on the apron, and the axle sleeve runs through and the dead axle rotates to be connected on the upper end cover of a mixing drum, pegs graft in the axle sleeve and the dead axle rotates to be connected pivot three, and the lower extreme of pivot three runs through the apron, and the pivot three is fixed with the scraper blade in the inside one end of cartridge filter, and the scraper blade can support the knot with the inner wall of cartridge filter and contact.

Preferably, a support is fixed on the outer side wall of the mixing cylinder, a second rotating shaft is rotatably connected to a fixed shaft on the support, one end of the second rotating shaft is in transmission connection with the rotating shaft through a bevel gear set, the other end of the second rotating shaft is coaxially and fixedly connected with a fourth gear, a sixth gear is fixed at the upper end of the shaft sleeve, a fifth gear is fixed at the upper end of the third rotating shaft, and the fourth gear is simultaneously in meshing connection with the fifth gear and the sixth gear.

Preferably, the free end of the mechanical arm is fixed with a mounting frame, and the spray head and the detection mechanism are fixed on the mounting frame.

Preferably, the detection mechanism comprises a protection box fixed on the mounting frame, a fixed shaft in the protection box is rotatably connected with a transparent plate, a thickness detector is fixed on the side wall of the protection box, a detection hole corresponding to the thickness detector is formed in the side wall of the protection box, and the transparent plate is located between the detection hole and the thickness detector.

Preferably, clean mechanism is including fixing pump impeller four on the mounting bracket, and the lateral wall and the liquid pipe one of pump impeller four are fixed and communicate, and the center of transparent plate is perpendicular and fixed connection pivot four, and the one end that the transparent plate was kept away from to pivot four is connected with the rotation axis transmission of the four inside impellers of pump impeller.

Preferably, a cleaning box is fixed and communicated with the side wall of the side where the detection hole is formed in the protection box, a first cavity and a second cavity are arranged inside the cleaning box, a sponge wiper is arranged in the first cavity, a plurality of small holes are formed in the side wall of the second cavity, which faces the transparent plate, and the first cavity and the second cavity are respectively communicated with a third liquid pipe and a second liquid pipe.

Preferably, a second pump wheel and a third pump wheel are fixed on the side wall of the first pump wheel, a second liquid pipe is fixed on the side wall of the second pump wheel and communicated with the second pump wheel, the second liquid pipe is communicated with a cleaning agent box, the cleaning agent box is fixed in an equipment room, a third liquid pipe is fixed on the side wall of the third pump wheel and communicated with the third pump wheel, the third liquid pipe is communicated with a waste liquid box, the waste liquid box is fixed in the equipment room, a second gear is coaxially and fixedly connected to an impeller in the second pump wheel, a third gear is coaxially and fixedly connected to an impeller in the third pump wheel, a first gear is coaxially and fixedly connected to an impeller in the first pump wheel, and the first gear is meshed with the second gear and the third gear.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the detection mechanism is synchronously driven to move simultaneously along with spraying while the surface of the workpiece is sprayed with the coating, and the thickness of the coating sprayed by the spray head is detected by using the detection mechanism, so that the thickness of the coating is detected in real time, manual repeated detection without stopping is realized, time and labor are saved, and the working efficiency is greatly improved.

According to the invention, the feeding mechanism is used for driving the mixing and filtering mechanism to filter and mix the coating while conveying the coating, so that large-particle impurities in the coating are removed, the coating is more uniformly mixed, the blockage of a spray head is avoided, the coating thickness is ensured to be uniform, the spraying quality is improved, the large-particle impurities adhered to the inner wall of the filter cylinder can be scraped off and fall off, the blockage of the filter cylinder is avoided, and the filtering effect and the efficiency of the filter cylinder are ensured.

According to the coating thickness detection device, the feeding mechanism drives the cleaning mechanism to keep the probe of the thickness detector clean while conveying the coating, so that the coating is prevented from being adhered to the probe of the thickness detector, the accuracy of the thickness detector for detecting the coating thickness is ensured, and the coating thickness is more accurately sprayed and controlled.

Drawings

FIG. 1 is a schematic view of the final assembly of the present invention;

FIG. 2 is a schematic cross-sectional view of the protective case according to the present invention;

FIG. 3 is a schematic diagram of the relative position between the cleaning box and the transparent plate according to the present invention;

FIG. 4 is a longitudinal sectional view of the mixing drum of the present invention;

fig. 5 is a schematic cross-sectional structure of a mixing drum according to the present invention.

In the figure: 1. a spraying room; 2. an equipment room; 3. a mechanical arm; 4. a mounting frame; 5. a spray head; 6. a first gear; 7. a pump impeller IV; 8. a first liquid pipe; 9. a motor; 10. a first rotating shaft; 11. a first pump wheel; 12. a second gear; 13. a second liquid pipe; 14. a second pump impeller; 15. a cleaning agent box; 16. a bevel gear set; 17. a third gear; 18. a pump impeller III; 19. a liquid pipe III; 20. a waste liquid tank; 21. a second rotating shaft; 22. a support; 23. a fourth gear; 24. a fifth gear; 25. a rotating shaft III; 26. a sixth gear; 27. a shaft sleeve; 28. a squeegee; 29. a convex ring; 30. a liquid pipe IV; 31. a mixing drum; 32. a filter cartridge; 33. a stirring rod; 34. a thickness detector; 35. a transparent plate; 36. a detection hole; 37. cleaning the box; 38. a protective case; 39. a rotating shaft IV; 40. a first cavity; 41. and a second cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides an automatic spraying robot with thickness detects function, includes spraying room 1 and

equipment room

2, 1 inside arm 3 that is provided with in spraying room is provided with shower nozzle 5 on the arm 3, still includes:

the detection mechanism is used for detecting the thickness of the coating and is arranged on the mechanical arm 3 and synchronously moves along with the spray head 5;

the feeding mechanism is arranged in the equipment room 2 and used for conveying the coating, and the feeding mechanism drives the cleaning mechanism to clean the detection mechanism in real time;

the mixing and filtering mechanism is arranged in the equipment room 2 and is in transmission connection with the feeding mechanism, and the mixing and filtering mechanism is used for mixing and filtering the coating and conveying the coating to the spray head 5 through the feeding mechanism.

In this embodiment, as shown in fig. 1, the feeding mechanism includes a motor 9 and a first pump wheel 11 fixed in the equipment room 2, an output shaft of the motor 9 is in transmission connection with a first rotating shaft 10, the first rotating shaft 10 is in transmission connection with an impeller of the first pump wheel 11, the first rotating shaft 10 is in transmission connection with the cleaning mechanism and the mixing and filtering mechanism at the same time, a side wall of the first pump wheel 11 is fixed and communicated with a first liquid pipe 8, one end of the first liquid pipe 8 is communicated with the mixing and filtering mechanism, and the other end is communicated with the spray head 5.

In the present embodiment, as shown in fig. 1, 4 and 5, the mixing and filtering mechanism includes a mixing cylinder 31 fixed on the inner wall of the equipment room 2, a first liquid pipe 8 is connected to the upper end of the side wall of the mixing cylinder 31, a protruding ring 29 is fixed on the inner bottom surface of the mixing cylinder 31, a fourth liquid pipe 30 is fixed on the bottom wall of the mixing cylinder 31 and is connected to the mixing cylinder 31, the end of the fourth liquid pipe 30 connected to the mixing cylinder 31 is located inside the protruding ring 29, and the end of the fourth liquid pipe 30 away from the mixing cylinder 31 is connected to a paint tank, not shown in the present invention, which contains paint.

In this embodiment, as shown in fig. 1, 4 and 5, a filter cylinder 32 is disposed inside a mixing cylinder 31, a plurality of stirring rods 33 are fixed on an outer side wall of the filter cylinder 32, a lower end of the filter cylinder 32 is sleeved and fixed on an outer side wall of a convex ring 29 in a rotating manner, an upper port of the filter cylinder 32 is fixed with a cover plate, a shaft sleeve 27 is fixed on the cover plate, the shaft sleeve 27 penetrates and fixed on an upper end cover of the mixing cylinder 31 in a rotating manner, a third rotating shaft 25 is inserted and fixed in the shaft sleeve 27 in a rotating manner, a lower end of the third rotating shaft 25 penetrates through the cover plate, a scraper 28 is fixed at one end of the third rotating shaft 25 inside the filter cylinder 32, the scraper 28 can be in abutting contact with an inner wall of the filter cylinder 32, a support 22 is fixed on an outer side wall of the mixing cylinder 31, a second rotating shaft 21 is rotatably connected on the support 22 in a rotating manner, one end of the second rotating shaft 21 is in transmission connection with a first rotating shaft 10 through a bevel gear set 16, and a fourth gear 23 is coaxially fixed on the other end, the upper end of the shaft sleeve 27 is fixed with a gear six 26, the upper end of the rotating shaft three 25 is fixed with a gear five 24, and a gear four 23 is simultaneously meshed with the gear five 24 and the gear six 26, the rotating shaft one 10 drives the rotating shaft two 21 to rotate through the bevel gear set 16 while rotating, so that the rotating shaft two 21 drives the gear four 23 to rotate synchronously, thereby the gear four 23 drives the gear five 24 and the gear six 26 to rotate simultaneously, the rotation of the gear five 24 drives the scraper 28 to rotate through the rotating shaft three 25, on one hand, the scraper 28 stirs the coating entering the interior of the filter cylinder 32, so that the coating is more uniformly mixed, on the other hand, the scraper 28 scrapes off large-particle impurities adhered on the inner wall of the filter cylinder 32, so that the large-particle impurities fall off, the filter cylinder 32 is prevented from being blocked, the filtering effect and efficiency of the filter cylinder 32 are ensured, the rotation of the gear six 26 drives the filter cylinder 32 to rotate through the shaft sleeve 27, and the rotation directions of the gear five 24 and the gear six 26 are opposite, thereby make cartridge filter 32 and scraper blade 28's rotation direction opposite, and then make cartridge filter 32 drive puddler 33 and do the rotation opposite with scraper blade 28 direction for puddler 33 further stirs the coating after filtering, thereby improves the mixing homogeneity of coating, and then improves the spraying quality.

In this embodiment, as shown in fig. 1 and 2, the free end of the mechanical arm 3 is fixed with the mounting frame 4, the spray head 5 and the detection mechanism are both fixed on the mounting frame 4, and the detection mechanism can move synchronously with the spray head 5, so that the detection mechanism detects the thickness of the coating layer sprayed by the spray head 5 in real time.

In this embodiment, as shown in fig. 1 and fig. 2, the detection mechanism includes a protection box 38 fixed on the mounting frame 4, a transparent plate 35 is rotatably connected to the rotation shaft in the protection box 38, a thickness detector 34 is fixed on a side wall of the protection box 38, a detection hole 36 corresponding to the thickness detector 34 is formed in the side wall of the protection box 38, the transparent plate 35 is located between the detection hole 36 and the thickness detector 34, the transparent plate 35 plays a role of blocking paint, the paint is prevented from being adhered to a probe of the thickness detector 34, so that the accuracy of the thickness detector 34 in detecting the thickness of the coating is ensured, and further, the coating of the coating is more accurately controlled.

In the embodiment, as shown in fig. 1, 2 and 3, the cleaning mechanism includes a pump wheel four 7 fixed on the mounting frame 4, a side wall of the pump wheel four 7 is fixed and communicated with a liquid pipe one 8, a center of the transparent plate 35 is vertical and fixedly connected with a rotating shaft four 39, one end of the rotating shaft four 39 far away from the transparent plate 35 is in transmission connection with a rotating shaft of an impeller inside the pump wheel four 7, a side wall of the protective box 38 where the detection hole 36 is located is fixed and communicated with a cleaning box 37, a cavity one 40 and a cavity two 41 are arranged inside the cleaning box 37, a sponge wiper is arranged inside the cavity one 40, a side wall of the cavity two 41 facing the transparent plate 35 is provided with a plurality of small holes, the cavity one 40 and the cavity two 41 are respectively communicated with a liquid pipe three 19 and a liquid pipe two 13, a pump wheel two 14 and a pump wheel three 18 are fixed on a side wall of the pump wheel one 11, a side wall of the pump wheel two 14 is fixed and communicated with a liquid pipe two 13, and a liquid pipe two 13 is communicated with the cleaning agent box 15, the cleaning agent box 15 is fixed in the equipment room 2, the side wall of the pump wheel III 18 is fixed and communicated with the liquid pipe III 19, the liquid pipe III 19 is communicated with the waste liquid box 20, the waste liquid box 20 is fixed in the equipment room 2, the impeller in the pump wheel II 14 is coaxially and fixedly connected with the gear II 12, the impeller in the pump wheel III 18 is coaxially and fixedly connected with the gear III 17, the impeller in the pump wheel I11 is coaxially and fixedly connected with the gear I6, and the gear I6 is meshed with the gear II 12 and the gear III 17 at the same time.

The invention has the advantages that: when the automatic spraying robot with the thickness detection function is used, the working process is as follows:

as shown in fig. 1 and 2, when spraying work is performed on the surface of a workpiece, the motor 9 is started to work, the motor 9 drives the first rotating shaft 10 to rotate, the first rotating shaft 10 synchronously drives the impeller in the first pump impeller 11 to rotate, the first pump impeller 11 conveys coating in the coating box to the spray head 5 through the first liquid pipe 8 and sprays the coating to the surface of the workpiece, meanwhile, the spraying work is completed on the surface of the workpiece through the cooperation of the mechanical arm 3, the thickness of the coating is detected in real time through the thickness detector 34 during spraying, data are fed back to the control center, spraying parameters are timely adjusted by the control center, time and labor are saved, stop operation is not needed, and work efficiency is greatly improved.

As described above, as shown in fig. 1, 4 and 5, the coating inside the coating box enters the inside of the filter cylinder 32 inside the mixing cylinder 31 through the fluid pipe four 30, large particle impurities in the coating can be removed through the filtering of the filter cylinder 32, the filtered coating enters the fluid pipe one 8 through the mixing cylinder 31 and is conveyed to the spray head 5, so as to avoid the blockage of the spray head 5 and improve the coating quality, and ensure the coating thickness to be uniform, the rotating shaft one 10 rotates and simultaneously drives the rotating shaft two 21 to rotate through the bevel gear set 16, so that the rotating shaft two drives the synchronous belt gear four 23 to rotate, so that the gear four 23 simultaneously drives the gear five 24 and the gear six 26 to rotate, the rotation of the gear five 24 drives the scraper 28 to rotate through the rotating shaft three 25, on one hand, the scraper 28 stirs the coating entering the inside the filter cylinder 32, so that the coating is more uniformly mixed, on the other hand, the scraper 28 scrapes off large particle impurities adhered to the inner wall of the filter cylinder 32, make it drop, avoid causing the jam of cartridge filter 32, ensure the filter effect and the efficiency of cartridge filter 32, six 26 rotations of gear pass through axle sleeve 27 and drive cartridge filter 32 and rotate, and because five 24 and six 26 rotation opposite directions of gear, thereby make cartridge filter 32 and scraper blade 28's rotation opposite direction, and then make cartridge filter 32 drive puddler 33 do with the rotation of scraper blade 28 opposite direction, make puddler 33 further stir the coating after filtering, thereby improve the mixing homogeneity of coating, and then improve the spraying quality.

As shown in fig. 1 and 2, the coating inside the first liquid pipe 8 drives the impeller inside the pump wheel four 7 to rotate in the flowing process, so that the impeller drives the transparent plate 35 to rotate through the fourth rotating shaft 39, and the coating cannot be bonded on the probe of the thickness detector 34 when the thickness detector 34 detects the coating thickness through the transparent plate 35, so that the accuracy of the thickness detector 34 on the detection of the coating thickness is ensured, and the coating thickness is more accurately controlled by spraying.

As shown in fig. 1, 2 and 3, the rotation of the impeller inside the pump wheel 11 drives the gear wheel 6 to rotate, so that the gear wheel 6 drives the gear wheel two 12 and the gear wheel three 17 to rotate, the rotation of the gear wheel two 12 drives the impeller inside the pump wheel two 14 to rotate synchronously, so that the impeller conveys the cleaning agent in the cleaning agent box 15 to the inside of the cavity two 41 through the liquid pipe two 13 and is sprayed on the transparent plate 35 through the small holes, so that the coating adhered on the transparent plate 35 is dissolved and removed, and the gear wheel three 17 rotates and drives the impeller inside the pump wheel three 18 to rotate synchronously, so that the impeller generates a suction force in the cavity one 40 through the liquid pipe three 19, the sponge wiper in the cavity one 40 wipes off the waste liquid on the transparent plate 35 completely, thereby ensuring that the part corresponding to the thickness detector 34 can be kept clean all the time, and the waste liquid is conveyed to the waste liquid box 20 by the suction force to be collected, thereby, the transparent plate 35 can be cleaned in real time, and the accuracy of the thickness detector 34 for detecting the thickness of the coating layer can be further ensured.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides an automatic spraying robot with thickness detects function, includes spray booth (1) and equipment room (2), spray booth (1) inside is provided with arm (3), be provided with shower nozzle (5) on arm (3), its characterized in that: further comprising:

the detection mechanism is used for detecting the thickness of the coating and is arranged on the mechanical arm (3) and synchronously moves along with the spray head (5);

the feeding mechanism is arranged in the equipment room (2) and used for conveying the coating, and the feeding mechanism drives the cleaning mechanism to clean the detection mechanism in real time;

the mixing and filtering mechanism is arranged in the equipment room (2) and is in transmission connection with the feeding mechanism, and the mixing and filtering mechanism is used for mixing and filtering the coating and conveying the coating to the spray head (5) through the feeding mechanism;

the feeding mechanism comprises a motor (9) and a first pump wheel (11) which are fixed in the equipment room (2), an output shaft of the motor (9) is in transmission connection with a first rotating shaft (10), and the first rotating shaft (10) is in transmission connection with an impeller of the first pump wheel (11); the rotating shaft I (10) is in transmission connection with the cleaning mechanism and the mixing and filtering mechanism at the same time, the side wall of the pump wheel I (11) is fixed and communicated with the liquid pipe I (8), one end of the liquid pipe I (8) is communicated with the mixing and filtering mechanism, and the other end of the liquid pipe I (8) is communicated with the spray head (5);

a mounting frame (4) is fixed at the free end of the mechanical arm (3), and the spray head (5) and the detection mechanism are both fixed on the mounting frame (4);

the detection mechanism comprises a protection box (38) fixed on the mounting frame (4), a transparent plate (35) is rotatably connected to the protection box (38) through a rotating shaft, a thickness detector (34) is fixed on the side wall of the protection box (38), a detection hole (36) corresponding to the thickness detector (34) is formed in the side wall of the protection box (38), and the transparent plate (35) is located between the detection hole (36) and the thickness detector (34);

the cleaning mechanism comprises a pump wheel four (7) fixed on the mounting frame (4), the side wall of the pump wheel four (7) is fixed and communicated with a liquid pipe one (8), the center of the transparent plate (35) is vertical and is fixedly connected with a rotating shaft four (39), one end, away from the transparent plate (35), of the rotating shaft four (39) is in transmission connection with a rotating shaft of an impeller in the pump wheel four (7), a cleaning box (37) is fixed and communicated on the side wall of one side, where the detection hole (36) is located, of the protective box (38), a cavity one (40) and a cavity two (41) are arranged inside the cleaning box (37), a sponge wiper is arranged in the cavity one (40), a plurality of small holes are formed in the side wall, facing the transparent plate (35), of the cavity two (41), the cavity one (40) and the cavity two (41) are respectively communicated with a liquid pipe three (19) and a liquid pipe two (13), be fixed with pump impeller two (14) and pump impeller three (18) on the lateral wall of pump impeller one (11), the fixed and liquid pipe two (13) that leads to of lateral wall of pump impeller two (14), liquid pipe two (13) are linked together with cleaner case (15), cleaner case (15) are fixed in equipment room (2), the fixed and liquid pipe three (19) that leads to of lateral wall of pump impeller three (18), liquid pipe three (19) are linked together with waste liquid case (20), waste liquid case (20) are fixed in equipment room (2).

2. The automatic coating robot with the thickness detection function according to claim 1, wherein: the mixing and filtering mechanism comprises a mixing cylinder (31) fixed on the inner wall of an equipment room (2), a liquid pipe (8) is communicated with the upper end of the side wall of the mixing cylinder (31), a convex ring (29) is fixed on the bottom surface of the inside of the mixing cylinder (31), a liquid pipe (30) is fixed and communicated with the bottom wall of the mixing cylinder (31), one end of the liquid pipe (30) connected with the mixing cylinder (31) is located on the inner side of the convex ring (29), one end of the liquid pipe (30) away from the mixing cylinder (31) is communicated with a coating box, a filtering cylinder (32) is arranged inside the mixing cylinder (31), a plurality of stirring rods (33) are fixed on the outer side wall of the filtering cylinder (32), the lower end sleeve of the filtering cylinder (32) is connected on the outer side wall of the convex ring (29) in a rotating mode through a fixed shaft, a cover plate is fixed on the upper end opening of the filtering cylinder (32), and a shaft sleeve (27) is fixed on the cover plate, axle sleeve (27) run through and the dead axle rotates to be connected on the upper end cover of mixing drum (31), peg graft in axle sleeve (27) and the dead axle rotates to connect pivot three (25), the lower extreme of pivot three (25) runs through the apron, and pivot three (25) are located the inside one end of cartridge filter (32) and are fixed with scraper blade (28), and scraper blade (28) can be detained the contact with the inner wall of cartridge filter (32) support (22) on the lateral wall of mixing drum (31), the dead axle rotates on support (22) and is connected with pivot two (21), the one end of pivot two (21) is passed through bevel gear group (16) and is connected with pivot one (10) transmission, the coaxial fixed connection gear four (23) of the other end, axle sleeve (27) upper end is fixed with gear six (26), pivot three (25) upper end is fixed with gear five (24), and gear four (23) simultaneously with gear five (24), And the six gears (26) are in meshed connection.

3. The automatic coating robot with the thickness detection function according to claim 1, wherein: and a second gear (12) is coaxially and fixedly connected to an impeller in the second pump impeller (14), and a third gear (17) is coaxially and fixedly connected to an impeller in the third pump impeller (18).

4. The automatic coating robot with the thickness detection function according to claim 2, wherein: the impeller in the pump wheel I (11) is coaxially and fixedly connected with a gear I (6), and the gear I (6) is meshed with a gear II (12) and a gear III (17) simultaneously.