Pipe inner wall spin coating equipment

Abstract

The present invention relates to the technical field of spraying equipment, and discloses a pipe inner wall spin coating equipment, comprising a mounting frame, a slide rail being mounted on the mounting frame, a top frame being connected to the top of the mounting frame, and further comprising: a loading assembly for loading and unloading; a rotating clamping assembly for clamping the pipe and driving the pipe to rotate; a spraying assembly for spraying the inner wall of the pipe; and an air knife for drying the pipe after spraying. Through the coordination of the loading assembly, the rotating clamping assembly, the spraying assembly and the air knife, automated spraying operations of loading, clamping, spraying, drying and unloading are realized, so that the inner wall of the pipe can be rotated by the clamping drive of the two top pipes during spraying, and the nozzles of the two spraying pipes spray the inner wall of the pipe during the process of moving inside the pipe, thereby avoiding the occurrence of local coating deposition and improving the uniformity of coating distribution on the inner wall of the pipe.

Description

Technical Field

[0001] The invention relates to the technical field of spraying equipment, and in particular to a pipe inner wall spin coating device. Background Art

[0002] In many industries, pipelines are key carriers of fluid transportation, and there is an urgent need for their protection and functional improvement. According to the application in different fields, specific coatings need to be sprayed on the pipelines during the production process, such as anti-corrosion coatings, antibacterial coatings, antistatic coatings, etc. The existing technology usually requires the use of a spraying device when spraying coatings on pipelines. The working principle of the existing spraying device is mainly to suck in the paint, increase the pressure, and spray it onto the pipe surface with a spray gun.

[0003] Chinese patent CN214637518U discloses a "PVC pipe sprayer" comprising a chassis, wherein the inner side wall of the chassis is fixedly hinged with two symmetrical first connecting rods, the top of the first connecting rod is rotatably connected to a first clamping wheel, the bottom of the first connecting rod is rotatably connected to a first sliding wheel, the inner side wall of the chassis is fixedly hinged with a second connecting rod, the top of the second connecting rod is rotatably connected to a second clamping wheel, the bottom of the second connecting rod is rotatably connected to a second sliding wheel, the outside of the chassis is fixedly connected to an electric push rod, and the telescopic end of the electric push rod passes through the chassis and extends to the interior of the chassis, the inner bottom wall of the chassis is slidably connected to a push block, and the electric push rod is fixedly connected to the push block, and a slider is provided on the top of the push block. The PVC pipe sprayer, by utilizing the rolling wheel and the clamping wheel to clamp the PVC pipe body, solves the problem that existing clamps are difficult to rotate the PVC pipe when clamping, and require manual flipping of the PVC pipe, which is very time-consuming and labor-intensive.

[0004] However, the existing technology has the following problems:

[0005] Existing pipe spraying machines are inconvenient when spraying the inner wall of the pipe. In actual operation, the operator needs to extend the spraying mechanism into the pipe to spray the inner wall of the pipe. While spraying, the operator is also required to manually fix and remove the pipe, which has low work efficiency. Manual spraying may cause uneven spraying on the inner wall of the pipe, and local deposition of paint may occur at the bottom of the inner wall of the pipe, resulting in uneven coating thickness on the inner wall of the pipe. Summary of the Invention

[0006] The purpose of the present invention is to provide a pipe inner wall spin coating device to solve the above problems and overcome the defects of the prior art, as described in detail below.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] The present invention provides a pipe inner wall spin coating device, which includes a mounting frame, a slide rail is installed on the mounting frame, and a top frame is connected to the top of the mounting frame. It also includes: a loading assembly for loading and unloading; a rotating clamping assembly for clamping the pipe and driving the pipe to rotate; a spraying assembly for spraying the inner wall of the pipe; and an air knife for drying the pipe after the pipe spraying is completed; the rotating clamping assembly includes two first sliders, both of which are slidably connected to the slide rail, a driving seat is installed on the first slider, and a top pipe is rotatably installed on the driving seat, and the two top pipes are mirror-imaged; the spraying assembly includes two mounting seats, both of which are fixedly connected to the slide rail, a second slider is slidably connected to the mounting seat, and a spray pipe is connected through the second slider, and the two spray pipes respectively pass through the two driving seats and the two top pipes.

[0009] Preferably, a first driving device is provided in the first slider, and the first driving device is used to drive the first slider to move on the slide rail. A second driving device is provided on the driving seat, and the second driving device is used to drive the jacking pipe to rotate on the driving seat.

[0010] Preferably, a third driving device is provided on the mounting seat, and the third driving device is used to drive the second slider to move on the mounting seat. A peristaltic pump is provided on the mounting frame, and the peristaltic pump is used to transport paint. Both spray pipes are connected to the peristaltic pump through pipelines.

[0011] Preferably, the loading assembly includes a loading plate and a unloading plate, both of which are fixedly mounted on a mounting frame, and the loading plate and the unloading plate are respectively located on both sides of a slide rail, two lifting seats are mounted on the slide rail, two support plates are connected to the unloading plate, a retractable lifting block is provided on the lifting seat, the lifting block is driven by a cylinder, and a sensor is installed on the mounting frame.

[0012] Preferably, the wind knife is fixedly mounted on the top frame, an air pump is provided on the mounting frame, the air pump is used to transport air, the wind knife is connected to the air pump through a pipeline, and a heating device is provided on the air pump.

[0013] Preferably, an exhaust portion is provided on the driving seat, and the exhaust portion includes an outer shell, which is fixedly connected to the driving seat, the spray pipe passes through the outer shell, an exhaust channel is opened in the outer shell, a through hole is provided in the driving seat, the exhaust channel is connected to the through hole of the driving seat, and an exhaust interface is installed on the top of the outer shell, one of the exhaust interfaces is connected to an external vacuum pump.

[0014] Preferably, a vibrating part is provided on the slide rail, and the vibrating part includes two door-shaped frames, and the two door-shaped frames are fixedly mounted on the slide rail, and the two door-shaped frames are respectively located between the two first sliders and the two mounting seats, and an elastic rod is installed on the door-shaped frame, and an elastic ring is connected to the elastic rod, and the spray pipe passes through the elastic ring, and an elastic sheet is connected to the elastic rod, and a serrated bar is fixedly connected to the side of the two second sliders close to each other, and the two elastic sheets are in contact with the two serrated bars respectively when moving.

[0015] Preferably, a polishing portion is provided on the first slider, and the polishing portion includes a slide seat, the slide seat is fixedly connected to the first slider, a slide rod is slidably connected to the slide seat, a grinding head is installed on the slide rod, a triangular block is connected to the bottom of the slide rod, a return spring is provided between the slide rod and the slide seat, a resistance rod is fixedly connected to the portal frame, a through groove is provided at the bottom of the first slider, the resistance rod passes through the through groove of the first slider, the triangular block contacts the resistance rod when moving, and the two grinding heads respectively contact the ends of the two jacking pipes when moving.

[0016] Preferably, a fluid cylinder is mounted on the outer wall of the slide bar, an air cylinder is fixedly connected to the outer wall of the fluid cylinder, the resistance rod contacts the air cylinder during movement, an air pipe is connected between the air cylinder and the fluid cylinder, a flow channel is provided in the grinding head, a liquid pipe is connected to the fluid cylinder, and one end of the liquid pipe away from the liquid pipe is connected to the flow channel.

[0017] The beneficial effects of the present invention are:

[0018] 1. The pipe inner wall spin coating equipment realizes the automated spraying operation of loading, clamping, spraying, drying and unloading through the cooperation of the feeding component, the rotary clamping component, the spraying component and the air knife, so that the inner wall of the pipe can be rotated by the clamping of the two top pipes during spraying. The nozzles of the two spray pipes spray the inner wall of the pipe while moving inside the pipe. The inner wall of the pipe generates centrifugal force through continuous rotation when contacting the paint, which can make the paint contact with the inner wall of the pipe evenly, and avoid local paint deposition at the same time, thereby improving the uniformity of the paint distribution on the inner wall of the pipe, and also improving the uniformity of the coating thickness, thereby improving the spraying efficiency and spraying quality, and avoiding the occurrence of local uneven spraying.

[0019] 2. The pipe inner wall spin coating equipment is equipped with an exhaust part so that the two exhaust interfaces are coordinated, one exhaust interface is for air intake and the other exhaust interface is for exhaust, so that the water vapor generated inside the pipe during drying is discharged from the pipe in time to avoid water droplets on the inner wall of the pipe.

[0020] 3. The pipe inner wall spin coating equipment, through the setting of the vibration part, enables the two spray pipes to be affected by the two elastic rings and vibrate when moving, so that the spray pipes can use vibration to promote the uniform flow of paint in the spray pipes, while reducing the problem of paint contacting the inner wall of the spray pipe due to low flow rate and retention, and avoiding the situation where part of the paint adheres to the inner wall of the spray pipe for a long time and causes caking.

[0021] 4. The pipe inner wall spin coating equipment, through the setting of the polishing part, enables the two grinding heads to grind the ends of the two jacking pipes that contact the two ends of the pipe after the spraying of the two jacking pipes is completed, so as to maintain the cleanliness and smoothness of the two jacking pipe ends, and avoid the accumulation of a layer of paint on the tapered ends of the jacking pipes after long-term use, resulting in uneven surface thickness, thereby affecting the clamping effect; through the setting of the liquid cylinder, the grinding head can adhere to a layer of thinner during grinding. By adding the thinner, the dissolution and grinding of the coating can be accelerated, thereby optimizing the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the feeding assembly of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the blanking plate of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the rotary clamping assembly of the present invention;

[0027] Figure 5 It is a schematic diagram of the lifting seat structure of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the spray assembly of the present invention;

[0029] Figure 7 It is a schematic diagram of the exhaust structure of the present invention;

[0030] Figure 8 It is a schematic structural diagram of the vibration part of the present invention;

[0031] Figure 9 It is a schematic structural diagram of the polishing part of the present invention;

[0032] Figure 10 It is a fluid cylinder structural diagram of the present invention;

[0033] Figure 11 It is a schematic diagram of the flow channel structure of the present invention.

[0034] The accompanying drawings are marked as follows: 1. Mounting frame; 11. Slide rail; 12. Top frame; 2. Loading assembly; 21. Loading plate; 22. Lifting seat; 23. Unloading plate; 24. Support plate; 25. Sensor; 3. Rotary clamping assembly; 31. First slider; 32. Drive seat; 33. Top pipe; 4. Spraying assembly; 41. Mounting seat; 42. Second slider; 43. Spraying pipe; 5. Air knife; 6. Exhaust part; 61. Housing; 62. Exhaust channel; 63. Exhaust interface; 7. Vibrating part; 71. Door frame; 72. Elastic rod; 73. Elastic ring; 74. Elastic sheet; 75. Sawtooth bar; 8. Polishing part; 81. Slide seat; 82. Slide rod; 83. Grinding head; 84. Triangular block; 85. Resistance rod; 86. Liquid cylinder; 87. Air cylinder; 88. Air pipe; 89. Liquid pipe; 810. Flow channel. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other implementations obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0036] Example 1

[0037] See also Figure 1 - Figure 5, including a mounting frame 1, a slide rail 11 is installed on the mounting frame 1, and a top frame 12 is connected to the top of the mounting frame 1, and also includes: a loading assembly 2 for loading and unloading; the loading assembly 2 includes a loading plate 21 and a unloading plate 23, the loading plate 21 and the unloading plate 23 are fixedly mounted on the mounting frame 1, the loading plate 21 and the unloading plate 23 are respectively located on both sides of the slide rail 11, two lifting seats 22 are installed on the slide rail 11, and two supporting plates 24 are connected to the unloading plate 23, and a retractable lifting block is provided on the lifting seat 22, and the lifting block is driven by a cylinder to place the pipeline on the loading plate 21, and the loading plate 21 is tilted. The pipeline rolls along the loading plate 21 to the lifting blocks of the two lifting seats 22, and the lifting block is provided with a notch. It can be placed on two recesses and kept in a parallel state. After starting the two lifting seats 22, the two lifting seats 22 drive the two lifting blocks to move up through the cylinder, and the two lifting blocks lift the pipe. A sensor 25 is installed on the mounting frame 1. The sensor 25 uses an infrared sensor, which can detect whether there are pipes on the two lifting seats 22. If no pipes are detected, the upper machine will automatically lock and spraying operations cannot be carried out temporarily to avoid human error in operation and starting spraying operations without pipes, resulting in paint leakage and waste. After drying is completed, the pipe falls on the two support plates 24. The two support plates 24 and the blanking plate 23 are also tilted. The pipe rolls along the two support plates 24 to the blanking plate 23 for temporary storage.

[0038] For further information, see Figure 1 - Figure 6 , a rotary clamping assembly 3 is used to clamp the pipe and drive the pipe to rotate; the rotary clamping assembly 3 includes two first sliders 31, the two first sliders 31 are slidably connected to the slide rail 11, a driving seat 32 is installed on the first slider 31, and a jacking pipe 33 is rotatably installed on the driving seat 32. The two jacking pipes 33 are mirror-imaged. A first driving device is provided in the first slider 31, and the first driving device is used to drive the first slider 31 to move on the slide rail 11. A second driving device is provided on the driving seat 32, and the second driving device is used to drive the jacking pipe 33 to rotate on the driving seat 32. The two first driving devices drive the two first sliders 31 to approach each other. When the first slider 31 moves, the driving seat 32 drives the jacking pipe 33 to move. The end of the jacking pipe 33 is set to be conical. When the two jacking pipes 33 approach each other, they contact the two ends of the pipeline. The conical ends of the two jacking pipes 33 rest against the two ends of the pipeline to clamp the pipeline. At this time, the two lifting seats 22 drive the two lifting blocks to reset through the cylinder, and start the two second driving devices. The two second driving devices drive the two jacking pipes 33 to rotate, so that the two jacking pipes 33 drive the pipeline to rotate together when rotating.

[0039] Further, see Figure 1 - Figure 6, the spraying assembly 4 is used to spray the inner wall of the pipeline; the spraying assembly 4 includes two mounting seats 41, the two mounting seats 41 are fixedly connected to the slide rail 11, the mounting seat 41 is slidably connected to the second slider 42, the second slider 42 is penetrated by a spraying pipe 43, the two spraying pipes 43 respectively penetrate the two driving seats 32 and the two top pipes 33, and the two spraying pipes 43 respectively pass through the two driving seats 32 and the two top pipes 33 and enter the pipeline from both ends of the pipeline. A third driving device is provided on the mounting seat 41, and the third driving device is used to drive the second slider 42 to move on the mounting seat 41. A creeping The peristaltic pump is used to transport paint. The two spray tubes 43 are connected to the peristaltic pump through pipelines. The two third driving devices are started to make the two spray tubes 43 move on the inner wall of the pipeline. The spray tubes 43 are provided with nozzles. When the nozzles of the two spray tubes 43 move to the middle part of the pipeline, the peristaltic pump is started and the peristaltic pump transports the paint to the two spray tubes 43. The two spray tubes 43 spray the paint through the nozzles. The two second driving devices drive the two second sliders 42 away from each other, so that the nozzles of the two spray tubes 43 move from the center position of the inner wall of the pipeline to both ends, thereby spraying the inner wall of the pipeline, thereby improving the uniformity of the spraying.

[0040] For further information, see Figure 1 - Figure 3 , the air knife 5 is used to dry the pipeline after the pipeline spraying is completed; the air knife 5 is fixedly mounted on the top frame 12, and an air pump is provided on the mounting frame 1. The air pump is used to transport air. The air knife 5 is connected to the air pump through a pipeline. The air pump is provided with a heating device. After the spraying is completed, the peristaltic pump is paused and the two third driving devices are paused. The two top pipes 33 continue to drive the pipeline to rotate, and the air pump is started. After the air pump uses the heating device to heat the air, the hot air is transported to the air knife 5. The air knife 5 blows the hot air onto the rotating pipeline to heat the pipeline, thereby achieving a drying effect.

[0041] Also, see Figure 6 - Figure 7 , an exhaust portion 6 is provided on the driving seat 32, and the exhaust portion 6 includes a shell 61, which is fixedly connected to the driving seat 32, and the spray pipe 43 passes through the shell 61, and an exhaust channel 62 is opened in the shell 61. A through hole is provided in the driving seat 32, and the exhaust channel 62 is connected to the through hole of the driving seat 32. An exhaust interface 63 is installed on the top of the shell 61, one of the exhaust interfaces 63 is connected to an external air pump. While drying, the air in the exhaust interface 63 connected thereto is sucked out by the air pump, so that the exhaust interface 63 draws out the air in the pipeline through the exhaust channel 62 and the through hole of the driving seat 32, and the exhaust interface 63 at the other end of the pipeline draws in external air through the exhaust channel 62 and the through hole of the driving seat 32, so that the air pump can draw out the water vapor generated during drying in the pipeline and maintain the dryness in the pipeline.

[0042] In addition, see Figure 6 、 Figure 8 The two ends of the cam 74 are fixed on the sliding rail 11, and the two ends of the cam 74 are fixed on the sliding rail 11. The two ends of the cam 74 are fixed on the sliding rail 11, and the two ends of the cam 74 are fixed on the sliding rail 11. The two ends of the cam 74 are fixed on the sliding rail 11, and the two ends of the cam 74 are fixed on the sliding rail 11.

[0043] It is worth noting that see Figure 6 、 Figures 9-11 The first slider 31 is provided with a polishing portion 8, and the polishing portion 8 includes a slide 81, which is fixedly connected to the first slider 31, a slide rod 82 is slidably connected to the slide 81, a grinding head 83 is installed on the slide 82, a triangular block 84 is connected to the bottom of the slide rod 82, a return spring is provided between the slide rod 82 and the slide 81, and a resisting rod 85 is fixedly connected to the door frame 71. A through groove is provided at the bottom of the first slider 31, and the resisting rod 85 passes through the through groove of the first slider 31. The triangular block 84 is in During movement, the two grinding heads 83 respectively contact the ends of the two jacking pipes 33, and the second driving device is started. The jacking pipe 33 rotates so that its tapered end rubs against the grinding head 83, thereby grinding away the paint attached to the tapered end of the jacking pipe 33 during the previous spraying operation.

[0044] It is worth noting that, please refer to Figure 10-11The outer wall of the sliding rod 82 is provided with a liquid cylinder 86, and the outer wall of the liquid cylinder 86 is fixedly connected with an air cylinder 87. When the resistance rod 85 moves, it contacts the air cylinder 87, and an air pipe 88 is connected between the air cylinder 87 and the liquid cylinder 86. A flow channel 810 is provided in the grinding head 83, and a liquid pipe 89 is connected to the liquid cylinder 86. The end of the liquid pipe 89 away from the liquid pipe 89 is connected to the flow channel 810. The liquid cylinder 86 is filled with a diluent, and the liquid cylinder 86 injects the diluent into the flow channel 810 through the liquid pipe 89 through the positive pressure. Since the flow channel 810 runs through the contact surface between the grinding head 83 and the top pipe 33, a layer of diluent can be attached to the grinding head 83. When the grinding head 83 grinds the top pipe 33, the dissolution and grinding of the coating can be accelerated by adding the diluent, thereby optimizing the grinding effect.

[0045] The two lifting blocks are driven by the two lifting seats 22 to reset, and the two second driving devices are started, and the two second driving devices drive the two lifting blocks 33 to rotate, so that the two lifting pipes 33 can be clamped. When the top pipe 33 rotates, the two spray pipes 43 do not rotate. The two second sliders 42 are driven away from each other by the two second driving devices, so that the nozzles of the two spray pipes 43 move toward each other at the center position of the inner wall of the pipe, thereby spraying the inner wall of the pipe. When the inner wall of the pipe rotates, the two spray pipes 43 are sprayed by moving, thereby improving the uniformity of spraying, optimizing the spraying quality, and avoiding the occurrence of local uneven spraying.

[0046] After the spraying is completed, the peristaltic pump and the two third driving devices are paused, the two top pipes 33 continue to drive the pipeline to rotate, and the air pump is started. The air pump uses the heating device to heat the air and then delivers the hot air to the wind knife 5. The wind knife 5 blows the hot air onto the rotating pipeline to heat the pipeline, thereby achieving a drying effect. While drying, the air in the exhaust interface 63 connected to it is sucked out by the vacuum pump, so that the exhaust interface 63 draws out the air in the pipeline through the exhaust channel 62 and the through hole of the drive seat 32. The exhaust interface 63 at the other end of the pipeline, the exhaust channel 62 and the through hole of the drive seat 32 inhale external air, so that the vacuum pump can draw out the water vapor generated during drying in the pipeline to maintain the dryness in the pipeline.

[0047] After drying is completed, the two top pipes 33 are controlled to separate by the two first driving devices, and the pipes fall onto the two supporting plates 24. The two supporting plates 24 and the blanking plate 23 are also inclined. The pipes roll along the two supporting plates 24 to the blanking plate 23 for temporary storage.

[0048] When the two second sliders 42 move, they respectively drive the two serrated bars 75 to move synchronously. Taking one of the serrated bars 75 as an example, since the elastic rod 72, the elastic ring 73 and the elastic sheet 74 are all made of elastic materials, the serrated bar 75 contacts the elastic sheet 74 when moving and drives the elastic sheet 74 to vibrate. The elastic sheet 74 transmits the vibration to the elastic rod 72 and the elastic ring 73, so that the elastic ring 73 can continue to vibrate when the second slider 42 and the spray pipe 43 move. When the elastic ring 73 vibrates, it can drive the spray pipe 43 to vibrate, so that the spray pipe 43 can use vibration to promote the uniform flow of paint in the spray pipe 43, while reducing the problem of paint contacting the inner wall of the spray pipe 43 being retained due to low flow rate, and avoiding the situation where some paint adheres to the inner wall of the spray pipe 43 for a long time and causes caking.

[0049] When the first slider 31 moves, it drives the slide 81 and the slide bar 82 above it to move synchronously. When the two first sliders 31 are separated from each other and are about to move into place, the triangular block 84 contacts the interference rod 85, and the interference rod 85 applies a reverse thrust to the triangular block 84 through the inclined surface of the triangular block 84, so that the triangular block 84 drives the slide bar 82 to move upward on the slide 81. When the interference rod 85 is no longer in contact with the triangular block 84, the slide bar 82 is reset downward by the elastic force of the reset spring. After the slide bar 82 moves up, the grinding head 83 on the slide bar 82 contacts the tapered end of the top pipe 33. At this time, the second driving device is started again, and the top pipe 33 rotates so that its tapered end rubs on the grinding head 83, thereby removing the friction force attached to the tapered end of the top pipe 33 during the previous spraying operation. The paint is polished clean to avoid the accumulation of a layer of paint on the tapered end of the top pipe 33 after long-term use of the top pipe 33, which leads to uneven surface thickness and affects the clamping effect; when the resistance rod 85 contacts the triangular block 84, the resistance rod 85 also contacts the air cylinder 87. After being squeezed by the resistance rod 85, the air cylinder 87 injects air into the liquid cylinder 86 through the air pipe 88. The liquid cylinder 86 is filled with a diluent. The liquid cylinder 86 injects the diluent into the flow channel 810 through the liquid pipe 89 through the positive pressure. Since the flow channel 810 runs through the contact surface between the grinding head 83 and the top pipe 33, a layer of diluent can be attached to the grinding head 83. When the grinding head 83 grinds the top pipe 33, the addition of the diluent can accelerate the dissolution and grinding of the coating, thereby optimizing the grinding effect.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A pipe inner wall spin coating device, comprising a mounting frame (1), a slide rail (11) being mounted on the mounting frame (1), a top frame (12) being connected to the top of the mounting frame (1), and characterized in that: Also includes: A loading component (2), used for loading and unloading materials; A rotating clamping assembly (3) for clamping the pipe and driving the pipe to rotate; A spraying assembly (4) for spraying the inner wall of the pipeline; Air knife (5), used to dry the pipeline after the pipeline spraying is completed; The rotary clamping assembly (3) includes two first sliders (31), both of which are slidably connected to the slide rail (11), a driving seat (32) is installed on the first slider (31), and a top pipe (33) is rotatably installed on the driving seat (32), and the two top pipes (33) are mirror-imaged. The spray assembly (4) includes two mounting seats (41), both of the mounting seats (41) are fixedly connected to the slide rail (11), a second slider (42) is slidably connected to the mounting seat (41), a spray pipe (43) is connected through the second slider (42), and the two spray pipes (43) respectively penetrate the two driving seats (32) and the two top pipes (33); A first driving device is provided in the first slider (31), and the first driving device is used to drive the first slider (31) to move on the slide rail (11); a second driving device is provided on the driving seat (32), and the second driving device is used to drive the top pipe (33) to rotate on the driving seat (32); The slide rail (11) is provided with a vibration part (7), and the vibration part (7) includes two door-shaped frames (71), and the two door-shaped frames (71) are fixedly mounted on the slide rail (11). The two door-shaped frames (71) are respectively located between the two first sliders (31) and the two mounting seats (41). An elastic rod (72) is mounted on the door-shaped frame (71), and an elastic ring (73) is connected to the elastic rod (72). The spray pipe (43) passes through the elastic ring (73). An elastic sheet (74) is connected to the elastic rod (72). A sawtooth bar (75) is fixedly connected to one side of the two second sliders (42) close to each other. The two elastic sheets (74) are in contact with the two sawtooth bars (75) when moving. A polishing portion (8) is provided on the first slider (31), and the polishing portion (8) includes a slide seat (81), the slide seat (81) is fixedly connected to the first slider (31), a slide rod (82) is slidably connected to the slide seat (81), a grinding head (83) is installed on the slide rod (82), a triangular block (84) is connected to the bottom of the slide rod (82), a return spring is provided between the slide rod (82) and the slide seat (81), a resisting rod (85) is fixedly connected to the door frame (71), a through groove is provided at the bottom of the first slider (31), the resisting rod (85) passes through the through groove of the first slider (31), the triangular block (84) contacts the resisting rod (85) when moving, and the two grinding heads (83) respectively contact the ends of the two top pipes (33) when moving.

2. The pipe inner wall spin coating device according to claim 1, characterized in that: A third driving device is provided on the mounting seat (41), and the third driving device is used to drive the second slider (42) to move on the mounting seat (41). A peristaltic pump is provided on the mounting frame (1), and the peristaltic pump is used to transport paint. Both spray pipes (43) are connected to the peristaltic pump through pipelines.

3. The pipe inner wall spin coating device according to claim 1, characterized in that: The loading assembly (2) includes a loading plate (21) and a loading plate (23), and the loading plate (21) and the loading plate (23) are fixedly mounted on the mounting frame (1). The loading plate (21) and the loading plate (23) are respectively located on both sides of the slide rail (11). Two lifting seats (22) are mounted on the slide rail (11), and two supporting plates (24) are connected to the loading plate (23). A retractable lifting block is provided on the lifting seat (22), and the lifting block is driven by a cylinder. A sensor (25) is mounted on the mounting frame (1).

4. The pipe inner wall spin coating device according to claim 1, characterized in that: The wind knife (5) is fixedly mounted on the top frame (12); an air pump is provided on the mounting frame (1); the air pump is used to transport air; the wind knife (5) is connected to the air pump via a pipeline; and a heating device is provided on the air pump.

5. The pipe inner wall spin coating device according to claim 1, characterized in that: An exhaust portion (6) is provided on the driving seat (32), and the exhaust portion (6) includes a shell (61), the shell (61) is fixedly connected to the driving seat (32), the spray pipe (43) passes through the shell (61), an exhaust channel (62) is opened in the shell (61), a through hole is provided in the driving seat (32), the exhaust channel (62) is connected to the through hole of the driving seat (32), and an exhaust interface (63) is installed on the top of the shell (61), one of the exhaust interfaces (63) is connected to an external air pump.

6. The pipe inner wall spin coating device according to claim 1, characterized in that: A liquid cylinder (86) is installed on the outer wall of the sliding rod (82), and an air cylinder (87) is fixedly connected to the outer wall of the liquid cylinder (86). When the resisting rod (85) moves, it contacts the air cylinder (87). An air pipe (88) is connected between the air cylinder (87) and the liquid cylinder (86). A flow channel (810) is provided in the grinding head (83), and a liquid pipe (89) is connected to the liquid cylinder (86). An end of the liquid pipe (89) away from the liquid pipe (89) is connected to the flow channel (810).

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