CN114210493B

CN114210493B - High-efficiency automatic brushing device and implementation method

Info

Publication number: CN114210493B
Application number: CN202111429019.4A
Authority: CN
Inventors: 陈卓; 杨青峰; 张轩; 冯泽权; 刘王奇; 李�浩
Original assignee: First Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Current assignee: First Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2023-04-07
Anticipated expiration: 2041-11-29
Also published as: CN114210493A

Abstract

The invention relates to the technical field of pipe fitting spraying, in particular to a high-efficiency automatic painting device and an implementation method, wherein a pair of slidably-mounted spraying trolleys are positioned at the front side and the rear side of a workpiece, a spraying frame capable of being adjusted in a lifting manner is slidably mounted at the upper end of each spraying trolley, a power box and a spraying control box for driving the spraying trolleys to move transversely are arranged at the lower end of each spraying trolley, a collecting pipe with a transversely-sliding expansion plate is mounted at one side of the spraying frame, the spraying control box is connected with the collecting pipe on the spraying frame through four groups of folding communicating pipes, the collecting pipe is distributed to five groups of vertically and linearly-distributed spraying pipes through the expansion plates, and the spraying pipes penetrate through the spraying frame in a sliding manner and extend to the outer wall of the workpiece, and the high-efficiency automatic painting device has the advantages that: the diameter-adjusting taper rod is arranged at the workpiece mounting position, so that the position of the spraying pipe is adjusted, the spraying pipe is adaptive to the workpiece on the outer wall of the arc, the distance between the spraying pipe and the workpiece is further reduced, the coating is prevented from splashing, and the purpose of improving the spraying quality is achieved through automatic adjustment.

Description

High-efficiency automatic brushing device and implementation method

Technical Field

The invention relates to the technical field of pipe fitting spraying, in particular to a high-efficiency automatic brushing device and an implementation method.

Background

With the rapid development of the construction industry, the workload of pipeline installation engineering is increasing, and the pipeline installation process is more standardized. In order to avoid collision in the transportation, loading and unloading processes, a large amount of pipeline anticorrosion and antirust coatings still exist in the existing pipeline installation and are coated on the site, the traditional site coating method is to use a roller, a paintbrush and other coating tools for coating, the coating efficiency is low, the coating quality is difficult to guarantee, secondary or even repeated coating exists, and the site construction progress and the later-stage acceptance one-time pass rate are seriously influenced. The traditional construction technology is difficult to meet the pipeline installation and construction under the current situation.

Therefore, the high-efficiency automatic brushing device and the implementation method are provided, and the problems of automatic spraying and precision adjustment of the pipe fitting are solved.

Disclosure of Invention

The invention aims to provide a high-efficiency automatic brushing device and an implementation method thereof, which are used for solving the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a high-efficiency automatic brushing device comprises a spraying device, wherein the spraying device consists of a pair of bilaterally symmetrical mounting frames and a pair of spraying trolleys which are slidably mounted between the mounting frames, a mounting sleeve is transversely and fixedly mounted on the mounting frames, an insertion rod rotatably mounted by a bearing is inserted in the mounting sleeve, a driven gear and a coupling are fixedly sleeved on the outer side of the insertion rod, a diameter adjusting conical rod is slidably mounted on the coupling, and the diameter adjusting conical rods on the bilaterally symmetrical mounting frames clamp and fix a workpiece;

the spraying trolley is arranged on the front side and the rear side of a workpiece in a sliding mode, the upper end of the spraying trolley is slidably provided with a lifting-adjustable spraying frame, the lower end of the spraying trolley is provided with a power box and a spraying control box which drive the spraying trolley to move transversely, a collecting pipe with a transverse sliding expansion plate is installed on one side of the spraying frame, the spraying control box is connected with the collecting pipe on the spraying frame through four groups of folding communicating pipes, the collecting pipe is distributed to five groups of spraying pipes which are distributed vertically and linearly through the expansion plate, and the spraying pipes penetrate through the spraying frame in a sliding mode and extend to the outer wall of the workpiece.

Preferably, one end of the inserted bar is inserted into the installation sleeve, the other end of the inserted bar extends to the outer side of the installation sleeve, a driving gear driven by a driving motor is arranged on the installation frame, and the driving gear is meshed with a driven gear on the outer side of the inserted bar.

Preferably, one end of the coupling is fixedly sleeved at the outer end of the inserted rod, the other end of the coupling transversely penetrates through the diameter-adjusting taper rod, and a stop block pressed on the outer wall of the diameter-adjusting taper rod is arranged at the end of the coupling.

Preferably, a spring is transversely sleeved in an inner cavity of the diameter adjusting taper rod, an extension pipe is arranged on the outer wall of one side, close to the workpiece, of the diameter adjusting taper rod, the spring is sleeved on the outer wall of the coupling, the spring is pressed on the outer wall of a step at the middle section of the coupling, and the extension pipe is inserted into an inner cavity at the end of the workpiece.

Preferably, the outer diameter of the diameter-adjusting taper rod is larger than the outer diameter of the workpiece, and the outer diameter of the diameter-adjusting taper rod gradually increases along the axis close to the workpiece.

Preferably, the spraying trolley consists of a sliding frame at the lower end and a vertical frame perpendicular to the sliding frame, rollers are arranged at the lower end of the sliding frame, the lower ends of a pair of bilaterally symmetrical mounting frames are respectively provided with an underframe, four groups of guide rails with adjustable interval widths are sleeved between the adjacent underframe in a sliding manner, and the rollers at the lower end of the sliding frame are installed on the guide rails in a rolling manner.

Preferably, the spraying frame comprises mounting panel, baffle and recovery board, the baffle is vertical to be fixed in the upper end of mounting panel, the horizontal vertical welding of recovery board is at the lower extreme of mounting panel, be provided with the vertical groove that vertically runs through on the inner wall of vertical frame, mounting panel slidable mounting is in vertical groove.

Preferably, a pair of inclined rods which are symmetrical front and back are arranged laterally on the vertical frame, an inclined groove is formed in the outer wall of the upper end of each inclined rod, a bottom plate which is attached to the inclined rods is arranged at the lower end of the collecting pipe, and a fixing bolt which is screwed and pressed on the inclined groove is arranged on the bottom plate.

Preferably, four groups of the collecting pipes which are linearly distributed are communicated with the spraying control box through a folding communicating pipe, one side, close to the mounting plate, of each collecting pipe is inserted with a telescopic plate in a sliding mode, a pressure groove is formed in the outer wall of each telescopic plate, and fastening screws which are in threaded rotation and press fit on the pressure groove are arranged on the outer wall of each collecting pipe.

A spraying method realized according to the high-efficiency automatic painting device comprises the following steps:

s1: the workpiece is installed, one end of a workpiece is inserted into the extension pipe, the spring is compressed through extrusion, the diameter-adjusting conical rods transversely slide to increase the distance between the adjacent diameter-adjusting conical rods, the workpiece is transversely installed, the workpiece is clamped and installed under the reset elasticity of the spring, and meanwhile, the driving motor drives the gears to be meshed to realize the rotation of the workpiece;

s2: spraying adjustment, namely placing a pair of spraying trolleys along the guide rail, adjusting the height of a spraying frame through a vertical groove, fixing the height of the spraying frame through the matching of an inclined groove and a bottom plate, and driving the spraying trolleys to move towards a workpiece along the outer wall of a diameter-adjusting conical rod through a power box;

s3: the spray pipe is adjusted, and at the spraying dolly lateral shifting in-process, because the taper rod external diameter of reducing crescent, five groups of spray pipes that drive linear distribution are the arc distribution by the pressfitting, through the position of fastening screw fixed spray pipe, realize spraying the outer wall of work piece through the spraying control box, along with the lateral motion of spraying dolly and driving motor drive work piece rotation, realize the outer wall spraying of work piece.

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

1. according to the invention, through the matching of the automatic spraying running trolley and the mounting frame, different painting components are selected according to different pipe diameters, and the pipeline painting one-step forming is completed, so that the painting construction workload is greatly reduced, the painting thickness and the impression quality are improved, the repair rate is reduced, the construction period is shortened, the construction cost is saved, and the working strength of constructors is reduced;

2. according to the invention, the diameter-adjusting taper rod is arranged at the workpiece mounting position, so that the position of the spraying pipe is adjusted, the spraying pipe is adaptive to the workpiece on the arc outer wall, the distance between the spraying pipe and the workpiece is further reduced, the coating is prevented from splashing, and the purpose of improving the spraying quality is achieved through automatic adjustment.

Drawings

FIG. 1 is a top view of the present invention;

FIG. 2 is a side view of the spray cart of the present invention;

FIG. 3 is a schematic perspective view of the spray frame of the present invention;

FIG. 4 is a schematic perspective view of the spraying cart of the present invention;

FIG. 5 is a side view of the spray cart of the present invention;

fig. 6 is a schematic view of the workpiece end mounting structure of the present invention.

In the figure: 1. a mounting frame; 2. a chassis; 3. a guide rail; 4. spraying a trolley; 5. a drive motor; 6. installing a sleeve; 7. a workpiece; 8. a driving gear; 9. adjusting the diameter of the conical rod; 10. folding the communicating pipe; 11. a carriage; 12. a vertical frame; 13. a power box; 14. a roller; 15. a spraying control box; 16. an inclined lever; 17. a spraying frame; 18. mounting a plate; 19. a baffle plate; 20. recovering the plate; 21. a vertical slot; 22. a spray pipe; 23. a retractable plate; 24. a collector pipe; 25. pressing a groove; 26. a base plate; 27. an inclined groove; 28. fastening screws; 29. inserting a rod; 30. a driven gear; 31. fixing the bolt; 32. coupling; 33. a spring; 34. a stopper; 35. an extension pipe.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution:

the utility model provides a high efficiency automatic brushing device, including the spraying device, the spraying device comprises a pair of mounting bracket 1 of bilateral symmetry and a pair of spraying dolly 4 of slidable mounting between the mounting bracket 1, horizontal fixed mounting has the installation sleeve 6 on the mounting bracket 1, peg graft in the installation sleeve 6 and connect the inserted bar 29 that the bearing rotated the installation, the fixed cover in the outside of inserted bar 29 connects driven gear 30 and coupling 32, slidable mounting has the tapered rod 9 of adjusting footpath on the coupling 32, the fixed cover of one end of coupling 32 is connected in the outside tip of inserted bar 29, the other end of coupling 32 transversely runs through the tapered rod 9 of adjusting footpath, the tip of coupling 32 is provided with the dog 34 of pressfitting at the tapered rod 9 outer wall of adjusting footpath, realize the slidable mounting of tapered rod 9 of adjusting footpath through coupling 32.

Fixed work piece 7 of accent footpath awl pole 9 centre gripping on a pair of mounting bracket 1 of bilateral symmetry, spring 33 has transversely been cup jointed in the inner chamber of accent footpath awl pole 9, it is provided with extension 35 to transfer footpath awl pole 9 one side outer wall near work piece 7, spring 33 cup joints on the outer wall of shaft coupling 32, the pressfitting of spring 33 is on shaft coupling 32 interlude ladder outer wall, extension 35 is pegged graft in the tip inner chamber of work piece 7, through the extrusion to spring 33, make the accent footpath awl pole 9 clearance increase between the adjacent mounting bracket 1, thereby be convenient for the horizontal grafting installation of work piece 7, it is fixed to realize the extrusion centre gripping to work piece 7 under spring 33's reset action.

One end of the inserted link 29 is inserted into the mounting sleeve 6, the other end of the inserted link 29 extends to the outside of the mounting sleeve 6, a driving gear 8 driven by a driving motor 5 is arranged on the mounting frame 1, the driving gear 8 is meshed with a driven gear 30 on the outside of the inserted link 29, and the driving gear 8 and the driven gear 30 are driven by the driving motor 5 to rotate in a meshed mode, so that the workpiece 7 is rotatably mounted.

The lower extreme of spraying dolly 4 is provided with headstock 13 and the spraying control box 15 that drive spraying dolly 4 lateral motion, a pair of spraying dolly 4 of slidable mounting is located work piece 7 front and back both sides, spraying dolly 4 comprises carriage 11 and the vertical frame 12 of perpendicular carriage 11 of lower extreme, the lower extreme of carriage 11 is provided with gyro wheel 14, the lower extreme of a pair of mounting bracket 1 of bilateral symmetry all is provided with chassis 2, slide between the adjacent chassis 2 and cup joint four groups of guide rails 3 of adjustable interval width, gyro wheel 14 roll mounting of carriage 11 lower extreme is on guide rail 3, utilize the cooperation of guide rail 3 and gyro wheel 14 to inject the lateral position of spraying dolly 4, thereby realize the steady lateral motion of spraying dolly 4.

The upper end slidable mounting of spraying dolly 4 has liftable spraying frame 17 of adjusting, spraying frame 17 is by mounting panel 18, baffle 19 and recovery board 20 are constituteed, baffle 19 is vertical to be fixed in the upper end of mounting panel 18, the horizontal perpendicular welding of recovery board 20 is at the lower extreme of mounting panel 18, be provided with vertical groove 21 that runs through on the inner wall of vertical frame 12, mounting panel 18 slidable mounting is in vertical groove 21, utilize vertical groove 21 to realize the regulation of spraying frame 17 height, make the height of spraying pipe 22 and the high adaptation of work piece 7.

The side direction of the vertical frame 12 is provided with a pair of tilting rods 16 which are symmetrical front and back, the outer wall of the upper end of the tilting rod 16 is provided with a tilting groove 27, the lower end of the collecting pipe 24 is provided with a bottom plate 26 which is attached to the tilting rod 16, the bottom plate 26 is provided with a fixing bolt 31 which is screwed and pressed on the tilting groove 27, and the height position of the spraying frame 17 is fixed by utilizing the matching of the tilting rod 16 and the bottom plate 26.

The outer diameter of the diameter-adjusting taper rod 9 is larger than that of the workpiece 7, the outer diameter of the diameter-adjusting taper rod 9 is gradually increased along an axis close to the workpiece 7, a collecting pipe 24 with a transverse sliding expansion plate 23 is installed on one side of the spraying frame 17, the spraying control box 15 is connected with the collecting pipe 24 on the spraying frame 17 through four groups of folding communicating pipes 10, the collecting pipe 24 is distributed to five groups of spraying pipes 22 which are distributed vertically and linearly through the expansion plate 23, the four groups of collecting pipes 24 which are distributed linearly are all communicated with the spraying control box 15 through the folding communicating pipes 10, the expansion plate 23 is inserted into one side of the collecting pipe 24 close to the mounting plate 18 in a sliding mode, a pressure groove 25 is formed in the outer wall of the expansion plate 23, fastening screws 28 which are pressed on the pressure groove 25 in a rotating mode are arranged on the outer wall of the collecting pipe 24, the spraying pipes 22 are initially located at the end portion of the diameter-adjusting taper rod 9, the spraying pipes 22 are driven to be pressed on the diameter-adjusting taper rod 9 in a pressing mode along with transverse movement of the spraying trolley 4, the five groups of the spraying pipes 22 which are driven to extrude the expansion plate 23 to form arc distribution which is adapted to the workpiece 7, and the position of the expansion plate 23 is fixed through the fastening screws.

The spraying pipe 22 penetrates through the spraying frame 17 in a sliding mode and extends to the outer wall of the workpiece 7, so that the outer wall of the workpiece 7 can be uniformly sprayed along with the movement of the spraying trolley 4 and the rotation of the workpiece 7.

s1: mounting a workpiece, namely inserting one end of the workpiece 7 on an extension pipe 35, compressing a spring 33 through extrusion, enabling a diameter-adjusting conical rod 9 to transversely slide, increasing the distance between adjacent diameter-adjusting conical rods 9, realizing transverse mounting of the workpiece 7, realizing clamping mounting of the workpiece 7 under the reset elasticity of the spring 33, and simultaneously realizing rotation of the workpiece 7 by driving a gear to be meshed through a driving motor 5;

s2: spraying adjustment, namely placing a pair of spraying trolleys 4 along the guide rail 3, adjusting the height of a spraying frame 17 through a vertical groove 21, fixing the height of the spraying frame 17 through the matching of an inclined groove 27 and a bottom plate 26, and driving the spraying trolleys 4 to move towards the workpiece 7 along the outer wall of the diameter-adjusting conical rod 9 through a power box 13;

s3: the spraying pipe is adjusted, in the transverse moving process of the spraying trolley 4, as the outer diameter of the diameter-adjusting taper rod 9 is gradually increased, the five groups of spraying pipes 22 which are linearly distributed are driven to be pressed and distributed in an arc shape, the positions of the spraying pipes 22 are fixed through the fastening screws 28, the spraying of the outer wall of the workpiece 7 is realized through the spraying control box 15, the workpiece 7 is driven to rotate along with the transverse movement of the spraying trolley 4 and the driving motor 5, and the spraying of the outer wall of the workpiece 7 is realized.

The working principle is as follows: firstly, one end of a workpiece 7 is inserted into the extension pipe 35, the spring 33 is compressed through extrusion, the diameter-adjusting taper rods 9 transversely slide, the distance between the adjacent diameter-adjusting taper rods 9 is increased, the workpiece 7 is transversely installed, the workpiece 7 is clamped and installed under the reset elastic force of the spring 33, and meanwhile, the driving motor 5 drives the gear to be meshed to realize the rotation of the workpiece 7.

A pair of spraying trolleys 4 are placed along the guide rail 3, the transverse positions of the spraying trolleys 4 are limited by the cooperation of the guide rail 3 and the idler wheels 14, so that the stable transverse movement of the spraying trolleys 4 is realized, the height of the spraying frame 17 is adjusted through the vertical groove 21, the height of the spraying frame 17 is fixed through the cooperation of the inclined groove 27 and the bottom plate 26, and the spraying trolleys 4 are driven by the power box 13 to move towards the workpiece 7 along the outer wall of the diameter-adjusting taper rod 9.

In 4 lateral shifting in-process in the spraying dolly, because the external diameter of accent footpath awl pole 9 increases gradually, five groups of spray pipes 22 that drive linear distribution extrude to expansion plate 23, form the arc distribution of adaptation in work piece 7, cooperation through fastening screw 28 and expansion plate 23, the realization is fixed the position of expansion plate 23, the realization is adjusted the position of spray pipe 22, make spray pipe 22 adaptation in the work piece 7 of circular arc outer wall, and then reduce and the work piece 7 between the distance, prevent that coating from splashing, the purpose that has reached improvement spraying quality through automatically regulated.

The outer wall of the workpiece 7 is sprayed through the spraying control box 15, and the workpiece 7 is driven to rotate along with the transverse movement of the spraying trolley 4 and the driving motor 5, so that the outer wall of the workpiece 7 is uniformly sprayed.

The automatic control technologies of the power box 13 driving the spraying trolley 4 to move, the spraying control box 15 controlling the spraying of the coating and the driving motor 5 driving the driving gear 8 to rotate are all mature technical means in the field and are not detailed.

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

Claims

1. The utility model provides a device is applied paint with a brush automatically to high efficiency, includes the spraying device, its characterized in that: the spraying device is composed of a pair of bilaterally symmetrical mounting frames (1) and a pair of spraying trolleys (4) which are slidably mounted between the mounting frames (1), mounting sleeves (6) are transversely and fixedly mounted on the mounting frames (1), insertion rods (29) rotatably mounted through bearings are inserted in the mounting sleeves (6), driven gears (30) and coupling shafts (32) are fixedly sleeved on the outer sides of the insertion rods (29), diameter-adjusting conical rods (9) are slidably mounted on the coupling shafts (32), and the diameter-adjusting conical rods (9) on the bilaterally symmetrical mounting frames (1) clamp and fix workpieces (7);

the pair of the slidably mounted spraying trolleys (4) are positioned on the front side and the rear side of the workpiece (7), the upper end of each spraying trolley (4) is slidably mounted with a spraying frame (17) capable of being adjusted in a lifting mode, the lower end of each spraying trolley (4) is provided with a power box (13) and a spraying control box (15) for driving each spraying trolley (4) to move transversely, one side of each spraying frame (17) is provided with a bus pipe (24) with a transverse sliding expansion plate (23), each spraying control box (15) is connected with the bus pipes (24) on the corresponding spraying frame (17) through four groups of folding communicating pipes (10), each bus pipe (24) is divided into five groups of spraying pipes (22) which are distributed vertically and linearly through the expansion plates (23), and each spraying pipe (22) penetrates through the corresponding spraying frame (17) in a sliding mode and extends to the outer wall of the workpiece (7);

the outer diameter of the diameter-adjusting taper rod (9) is larger than that of the workpiece (7), and the outer diameter of the diameter-adjusting taper rod (9) is gradually increased along the axis close to the workpiece (7).

2. A high efficiency automatic painting device according to claim 1, characterised in that: one end of the inserted bar (29) is inserted into the mounting sleeve (6), the other end of the inserted bar (29) extends to the outer side of the mounting sleeve (6), a driving gear (8) driven by a driving motor (5) is arranged on the mounting frame (1), and the driving gear (8) is meshed with a driven gear (30) on the outer side of the inserted bar (29).

3. A high efficiency automatic painting device according to claim 2, characterised in that: one end of the coupling (32) is fixedly sleeved at the outer side end of the insertion rod (29), the other end of the coupling (32) transversely penetrates through the diameter-adjusting taper rod (9), and a stop block (34) pressed on the outer wall of the diameter-adjusting taper rod (9) is arranged at the end of the coupling (32).

4. A high efficiency automatic painting device according to claim 3, characterised in that: the inner cavity of the diameter-adjusting taper rod (9) is transversely sleeved with a spring (33), the outer wall of one side, close to the workpiece (7), of the diameter-adjusting taper rod (9) is provided with an extension pipe (35), the spring (33) is sleeved on the outer wall of the coupling (32), the spring (33) is pressed on the stepped outer wall of the middle section of the coupling (32), and the extension pipe (35) is inserted into the inner cavity of the end part of the workpiece (7).

5. An automatic high-efficiency brushing device according to claim 4, characterized in that: spraying dolly (4) are by carriage (11) of lower extreme and vertical (12) of perpendicular carriage (11) constitute, and the lower extreme of carriage (11) is provided with gyro wheel (14), and the lower extreme of bilateral symmetry's a pair of mounting bracket (1) all is provided with chassis (2), and the sliding sleeve has four groups guide rail (3) of adjustable interval width between adjacent chassis (2), gyro wheel (14) roll mounting of carriage (11) lower extreme is on guide rail (3).

6. An automatic high-efficiency brushing device according to claim 5, characterized in that: spraying frame (17) comprises mounting panel (18), baffle (19) and recovery board (20), baffle (19) are vertical to be fixed in the upper end of mounting panel (18), the horizontal perpendicular welding of recovery board (20) is at the lower extreme of mounting panel (18), be provided with vertical groove (21) that run through on the inner wall of vertical frame (12), mounting panel (18) slidable mounting is in vertical groove (21).

7. A high efficiency automatic painting device according to claim 6, characterised in that: the side direction of the vertical frame (12) is provided with a pair of tilting rods (16) which are symmetrical front and back, the outer wall of the upper end of each tilting rod (16) is provided with a tilting groove (27), the lower end of the collecting pipe (24) is provided with a bottom plate (26) attached to the tilting rods (16), and the bottom plate (26) is provided with a fixing bolt (31) which is screwed and pressed on the tilting grooves (27).

8. A high efficiency automatic painting device according to claim 7, characterised in that: four groups of the collecting pipes (24) which are distributed linearly are communicated with the spraying control box (15) through a folding communicating pipe (10), one side, close to the mounting plate (18), of each collecting pipe (24) is inserted with an expansion plate (23) in a sliding mode, a pressure groove (25) is formed in the outer wall of each expansion plate (23), and fastening screws (28) which are screwed and pressed on the pressure groove (25) are arranged on the outer wall of each collecting pipe (24).

9. A painting method implemented by an automatic painting apparatus with high efficiency according to claim 8, characterized in that: the spraying method comprises the following steps:

s1: workpiece installation, wherein one end of a workpiece (7) is inserted into an extension pipe (35), a spring (33) is compressed through extrusion, a diameter adjusting conical rod (9) transversely slides to increase the distance between adjacent diameter adjusting conical rods (9), the workpiece (7) is transversely installed, the workpiece (7) is clamped and installed under the reset elasticity of the spring (33), and meanwhile, a driving motor (5) drives a gear to be meshed to realize the rotation of the workpiece (7);

s2: spraying adjustment, namely placing a pair of spraying trolleys (4) along the guide rail (3), adjusting the height of a spraying frame (17) through a vertical groove (21), fixing the height of the spraying frame (17) through the matching of an inclined groove (27) and a bottom plate (26), and driving the spraying trolleys (4) to move towards a workpiece (7) along the outer wall of a diameter-adjusting taper rod (9) through a power box (13);

s3: the spray pipe is adjusted, in spraying dolly (4) lateral shifting in-process, because transfer footpath awl pole (9) external diameter crescent, five groups of spray pipe (22) that drive linear distribution are the arc by the pressfitting and distribute, the position of fixing spray pipe (22) through fastening screw (28), realize spraying the outer wall of work piece (7) through spraying control box (15), along with the lateral movement of spraying dolly (4) and driving motor (5) drive work piece (7) and rotate, realize the outer wall spraying of work piece (7).