A coating device for cast pipes

Abstract

The utility model discloses a coating device for cast pipes, which relates to the technical field of cast pipe processing equipment, and includes a base, wherein a fixed rotating assembly is fixedly installed on the upper end of the base, and the left and right parts of the fixed rotating assembly are overlapped with cast pipes. The coating device for cast pipes described in the utility model can fix and rotate the cast pipe at the same time through the fixed rotating assembly, so that the coating can be effectively applied to the outer wall of the cast pipe, and the coating assembly can drive the coating roller to evenly apply the coating on the outer wall of the cast pipe. At the same time, the adjustable height design of the coating roller can also prevent the problem of too thick coating on the cast pipe. The outer wall cleaning assembly can remove dust, rust and other debris on the outer wall of the cast pipe before the cast pipe coating, thereby improving the adhesion of the coating and ensuring the uniformity of the coating. The replaceable cleaning function of the cleaning roller can ensure the continuity of the subsequent work of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of cast pipe processing equipment, in particular to a coating device for cast pipes. Background Art

[0002] During the casting process, the cast pipe coating covers the surface of the core to improve its surface fire resistance, chemical stability, resistance to molten metal erosion, and resistance to sand adhesion. This coating can be made into slurry, paste or powder, and is applied to the core surface by spraying, brushing, dipping, flowing, etc.

[0003] For example, the Chinese patent publication number CN214077502U discloses a coating device for cast pipes, which is connected to a rotating drive member through each group of roller groups; the frame is arranged on the outside of the roller group, and a mobile frame is slidably connected to the frame. The coating device for cast pipes provided by the utility model uses two groups of roller groups to effectively support the two ends of the cast pipe, drives the cast pipe to rotate around the axis of the cast pipe through the rotating drive member, feeds putty into the gap between the coating roller and the cast pipe, and uses the coating roller to coat the putty on the outer wall of the cast pipe, and finally uses a cloth plate to scrape the putty on the outer wall of the cast pipe, so that the putty forms a putty coating of equal thickness on the outer wall of the cast pipe, thereby achieving uniform coating of putty on the outer wall of the cast pipe.

[0004] The prior art has the following problems: when coating the cast pipe, the outer surface of the roller is easily stained with the coating, which can easily affect the working efficiency of the device. Secondly, the outer wall of the cast pipe is not treated before coating and is easily stained with dust, which reduces the adhesion of the coating. Utility Model Content

[0005] The utility model provides a coating device for a cast pipe to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A coating device for cast pipes comprises a base, the upper end of which is fixedly mounted with a fixed rotating assembly, the left and right parts of which are overlapped with cast pipes, the upper left and right parts of which are fixedly mounted with coating assemblies, and the lower part of which is fixedly mounted with an outer wall cleaning assembly.

[0008] Preferably, the fixed rotating assembly includes two mounting plates, a storage groove is opened on the left upper end of the base, and the inner wall of the storage groove is rotatably connected with an adjusting screw, a moving block is fixedly installed on the lower end of the mounting plate located on the left, and the inner wall of the moving block is threadedly connected with the outer wall of the adjusting screw, the lower end of the mounting plate located on the right is fixedly installed on the upper right part of the base, and limiting rods are fixedly installed at the front and rear positions of the upper right part of the base, and the inner walls of the front and rear parts of the mounting plate located on the left are slidably connected with the outer walls of the two limiting rods.

[0009] Preferably, the inner walls of the two mounting plates are rotatably connected to a rotating disk, a driven gear is fixedly sleeved on the left portion of the outer wall of the rotating disk located on the left, a motor 1 is fixedly installed on the left bottom portion of the left side of the mounting plate located on the left, a driving gear is fixedly sleeved on the output end of the motor 1, and the outer surface of the driving gear is meshed with the outer surface of the driven gear.

[0010] Preferably, an electric push rod passing through the two rotating disks is fixedly installed on the side away from each other of the two rotating disks, an annular sleeve is fixedly installed on the side of the outer walls of the two electric push rods close to each other, a plurality of sliding sleeves arranged in a ring are fixedly installed on the outer wall of the annular sleeve, a fixed sleeve is fixedly installed on the output end of the two electric push rods, a plurality of mounting blocks arranged in a ring are fixedly installed on the outer wall of the two fixed sleeves, the left and right parts of the adjacent surfaces of several mounting blocks are rotatably connected with rotating rods, the ends of several adjacent rotating rods away from the mounting blocks are rotatably connected with fixed blocks, the upper ends of several fixed blocks overlap the inner wall of the cast pipe, and the ends of several adjacent fixed blocks away from each other are slidably connected to the inner walls of several sliding sleeves.

[0011] Preferably, the paint assembly includes a mounting frame, the left and right parts of the lower end of the mounting frame are fixedly mounted on the left and right parts of the upper end of the base, a motor 2 is fixedly mounted at the rear position of the middle part of the upper end of the mounting frame, a gear is fixedly sleeved on the output end of the motor 2, the middle part of the upper end of the mounting frame is slidably connected to a rack, the upper end of the rack is meshed with the outer surface of the gear, a slide groove is provided in the middle part of the upper end of the mounting frame, a slider is slidably connected to the inner wall of the slide groove, the upper end of the slider is fixedly connected to the left part of the lower end of the rack, a connecting plate is fixedly mounted on the lower end of the slider, a hydraulic rod is fixedly mounted on the middle part of the lower end of the connecting plate, a movable plate is fixedly mounted on the output end of the hydraulic rod, and a paint roller is rotatably connected to the rear part of the lower end of the movable plate.

[0012] Preferably, a material storage box is fixedly mounted on the rear portion of the upper end of the mounting frame, a discharge pipe penetrating the top of the mounting frame is fixedly mounted on the lower end of the material storage box, and one end of the discharge pipe away from the material storage box is located above the coating roller.

[0013] Preferably, the outer wall cleaning component includes a slide plate, the left and right sides of the slide plate are slidably connected to the inner wall of the front part of the movable plate, an adjusting plate is fixedly installed on the lower end of the slide plate, connecting blocks are fixedly installed on the left and right parts of the lower end of the adjusting plate, cleaning rollers are overlapped on opposite sides of the two connecting blocks, a threaded rod is threadedly connected to the right position of the front part of the upper end of the movable plate, a sliding rod is slidably connected to the left position of the front part of the upper end of the movable plate, and the lower ends of the sliding rod and the threaded rod are fixedly connected to the left and right parts of the upper end of the adjusting plate.

[0014] Preferably, slots are provided on the left and right sides of the cleaning roller, and fixing frames are fixedly installed on the left and right sides of the adjustment plate, and the two fixing frames are slidably connected to the sides away from each other with insertion rods that penetrate the two connecting blocks, and the sides of the outer walls of the two insertion rods that are close to each other are movably sleeved with the inner wall of the slot, and the sides of the outer walls of the two insertion rods that are close to each other are movably sleeved with springs, and the ends of the two springs that are close to each other are fixedly connected to the sides of the two connecting blocks that are away from each other, and the ends of the two springs that are away from each other are fixedly connected to the opposite sides of the bottoms of the two fixing frames.

[0015] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0016] 1. The utility model provides a coating device for cast pipes, which can simultaneously realize the fixing and rotation of cast pipes through the cooperation among a motor, a driving gear, a driven gear, a rotating disk, an electric push rod, a fixed sleeve, an annular sleeve, a sliding sleeve, a mounting block, a rotating rod and a fixed block. Since the fixed structure is located in the inner cavity of the cast pipe, the coating work of the cast pipe can be more comprehensive and uniform, and the coating can be effectively prevented from polluting the structure.

[0017] 2. The utility model provides a coating device for cast pipes, which can move a cleaning roller to a suitable position to clean the cast pipe through the cooperation between a threaded rod, a sliding rod, a slide plate, an adjustment plate, a connecting block, a fixing frame, an insert rod and a spring. After cleaning, the cleaning roller can be driven to reset to prevent it from interfering with the work of the coating roller. At the same time, the cleaning roller can be disassembled and replaced to facilitate subsequent work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall front structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall rear view structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the fixed rotating assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of the coating component structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the outer wall cleaning component of the utility model.

[0023] In the figure: 1, base; 2, fixed rotating component; 3, coating component; 4, cleaning outer wall component; 5, cast pipe; 21, mounting plate; 22, adjusting screw; 23, limit rod; 24, rotating disk; 25, driven gear; 26, motor 1; 27, driving gear; 28, electric push rod; 29, annular sleeve; 210, sliding sleeve; 211, fixed sleeve; 212, mounting block; 213, rotating rod; 214, fixed block; 31, mounting frame; 32, motor 2; 33, gear; 34, rack; 35, slider; 36, connecting plate; 37, hydraulic rod; 38, moving plate; 39, coating roller; 310, storage box; 311, discharge pipe; 41, slide plate; 42, adjusting plate; 43, threaded rod; 44, sliding rod; 45, connecting block; 46, cleaning roller; 47, fixed frame; 48, plug rod; 49, spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1 and Figure 2 As shown, a coating device for cast pipes includes a base 1, a fixed rotating component 2 is fixedly installed on the upper end of the base 1, a cast pipe 5 is overlapped on the left and right parts of the fixed rotating component 2, a coating component 3 is fixedly installed on the left and right parts of the upper end of the base 1, and an outer wall cleaning component 4 is fixedly installed on the lower part of the coating component 3.

[0026] By fixing the rotating component 2, the cast pipe 5 can be fixed and rotated at the same time, so that the paint can be effectively applied to the outer wall of the cast pipe 5. The paint roller 39 can be driven by the paint component 3 to evenly apply the paint to the outer wall of the cast pipe 5. At the same time, the adjustable height design of the paint roller 39 can also prevent the problem of too thick paint on the cast pipe 5. By cleaning the outer wall component 4, dust, rust and other debris on the outer wall of the cast pipe 5 can be removed before the cast pipe 5 is painted, thereby improving the adhesion of the paint and ensuring the uniformity of the coating. The replaceable cleaning function of the cleaning roller 46 can ensure the continuity of subsequent work of the device.

[0027] like Figure 2 and Figure 3As shown, the fixed rotating assembly 2 includes two mounting plates 21, a storage groove is opened at the left upper end of the base 1, and the inner wall of the storage groove is rotatably connected with an adjusting screw 22, a moving block is fixedly installed at the lower end of the left mounting plate 21, and the inner wall of the moving block is threadedly connected with the outer wall of the adjusting screw 22, the lower end of the right mounting plate 21 is fixedly installed with the upper right part of the base 1, and limiting rods 23 are fixedly installed at the front and rear positions of the upper right part of the base 1, and the inner walls at the front and rear parts of the left mounting plate 21 are slidably connected with the outer walls of the two limiting rods 23.

[0028] By rotating the adjusting screw 22 , the moving block drives the mounting plate 21 located on the left to move, and the two limiting rods 23 limit the movement of the mounting plate 21 .

[0029] like Figure 3 As shown, the inner walls of the two mounting plates 21 are rotatably connected with a rotating disk 24, a driven gear 25 is fixedly sleeved on the left part of the outer wall of the left rotating disk 24, a motor 26 is fixedly installed on the left bottom of the left mounting plate 21, and a driving gear 27 is fixedly sleeved on the output end of the motor 26, and the outer surface of the driving gear 27 is meshed with the outer surface of the driven gear 25.

[0030] The output end of the motor 1 26 drives the driving gear 27 to rotate, so that the driven gear 25 drives the rotating disk 24 located on the left to rotate.

[0031] like Figure 3 As shown, an electric push rod 28 penetrating the two rotating disks 24 is fixedly installed on the side away from each other of the two rotating disks 24, an annular sleeve 29 is fixedly installed on the side where the outer walls of the two electric push rods 28 are close to each other, and a plurality of sliding sleeves 210 arranged in a ring are fixedly installed on the outer wall of the annular sleeve 29, and a fixed sleeve 211 is fixedly installed on the output end of the two electric push rods 28, and a plurality of mounting blocks 212 arranged in a ring are fixedly installed on the outer walls of the two fixed sleeves 211, and a plurality of rotating rods 213 are rotatably connected to the left and right parts of the adjacent surfaces of the plurality of mounting blocks 212, and a plurality of adjacent rotating rods 213 are rotatably connected to the ends of the mounting blocks 212 away from the fixing blocks 214, and the upper ends of the plurality of fixing blocks 214 overlap the inner wall of the casting pipe 5, and the ends of the plurality of adjacent fixing blocks 214 away from each other are slidably connected to the inner walls of the plurality of sliding sleeves 210.

[0032] The output ends of the two electric push rods 28 can drive the two fixed sleeves 211 to approach each other, so that the multiple rotating rods 213 rotate around the multiple mounting blocks 212, and push or pull the multiple fixed blocks 214 to slide in the inner walls of the multiple sliding sleeves 210, so that the multiple fixed blocks 214 can be close to or away from the inner wall of the casting pipe 5.

[0033] like Figure 4As shown, the coating assembly 3 includes a mounting frame 31, the left and right parts of the lower end of the mounting frame 31 are fixedly mounted on the left and right parts of the upper end of the base 1, a motor 2 32 is fixedly mounted at the rear position of the middle part of the upper end of the mounting frame 31, a gear 33 is fixedly sleeved on the output end of the motor 2 32, a rack 34 is slidably connected to the middle part of the upper end of the mounting frame 31, the upper end of the rack 34 is meshed with the outer surface of the gear 33, a slide groove is provided in the middle part of the upper end of the mounting frame 31, a slider 35 is slidably connected to the inner wall of the slide groove, the upper end of the slider 35 is fixedly connected to the lower left part of the rack 34, a connecting plate 36 is fixedly mounted on the lower end of the slider 35, a hydraulic rod 37 is fixedly mounted on the middle part of the lower end of the connecting plate 36, a movable plate 38 is fixedly mounted on the output end of the hydraulic rod 37, and a coating roller 39 is rotatably connected to the rear part of the lower end of the movable plate 38.

[0034] The output end of the motor 2 32 can drive the gear 33 to rotate, so that the rack 34 drives the slider 35 to move, and the slider 35 drives the connecting plate 36, the hydraulic rod 37 and the coating roller 39 to move above the casting pipe 5. At the same time, the hydraulic rod 37 can push the coating roller 39 to a suitable position so that the coating on the coating roller 39 is evenly applied to the outer wall of the casting pipe 5.

[0035] like Figure 4 As shown, a material storage box 310 is fixedly installed at the rear of the upper end of the mounting frame 31, and a discharge pipe 311 that passes through the top of the mounting frame 31 is fixedly installed at the lower end of the material storage box 310, and the end of the discharge pipe 311 away from the material storage box 310 is located above the coating roller 39.

[0036] The discharging pipe 311 transports the coating material in the storage box 310 to the outer wall of the coating roller 39 .

[0037] like Figure 5 As shown, the outer wall cleaning component 4 includes a slide plate 41, and the left and right sides of the slide plate 41 are slidably connected to the inner wall of the front part of the movable plate 38, an adjusting plate 42 is fixedly installed on the lower end of the slide plate 41, and connecting blocks 45 are fixedly installed on the left and right parts of the lower end of the adjusting plate 42, and cleaning rollers 46 are overlapped on the opposite sides of the two connecting blocks, a threaded rod 43 is threadedly connected to the right position of the front upper end of the movable plate 38, and a slide rod 44 is slidably connected to the left position of the front upper end of the movable plate 38, and the lower end of the slide rod 44 and the lower end of the threaded rod 43 are fixedly connected to the left and right parts of the upper end of the adjusting plate 42.

[0038] By rotating the threaded rod 43, the threaded rod 43 drives the slide plate 41 and the adjustment plate 42 to move up and down, and the slide rod 44 plays a limiting role. The cleaning roller 46 can move up and down through the adjustment plate 42, so that the cleaning roller 46 will not affect the coating work of the device.

[0039] like Figure 5As shown, slots are provided on the left and right sides of the cleaning roller 46, and fixing frames 47 are fixedly installed on the left and right sides of the adjustment plate 42. The two fixing frames 47 are slidably connected to the sides away from each other with insertion rods 48 that penetrate the two connecting blocks 45. The sides of the outer walls of the two insertion rods 48 that are close to each other are movably sleeved with the inner wall of the slots, and the sides of the outer walls of the two insertion rods 48 that are close to each other are movably sleeved with springs 49, and the ends of the two springs 49 that are close to each other are fixedly connected to the sides of the two connecting blocks 45 that are away from each other, and the ends of the two springs 49 that are away from each other are fixedly connected to the opposite sides of the bottoms of the two fixing frames 47.

[0040] By pulling the two insertion rods 48, the two springs 49 are compressed at the same time to accumulate elastic potential energy. After replacing or cleaning the cleaning roller 46, the cleaning roller 46 is placed between the two connecting blocks 45, and the elastic potential energy of the springs 49 drives the two insertion rods 48 to limit the cleaning roller 46 again.

[0041] The working principle of the utility model is as follows: the staff passes one end of the cast pipe 5 through one side of the output end of the right electric push rod 28, rotates the adjusting screw 22, moves the left mounting plate 21 to the right, makes the output ends of the two electric push rods 28 both located in the inner cavity of the cast pipe 5, starts the two electric push rods 28, the output ends of the two electric push rods 28 drive the two fixed sleeves 211 to approach each other, makes the several fixed blocks 214 slide in the several sliding sleeves 210, and at the same time the several rotating rods 213 push the several fixed blocks 214 to overlap with the inner wall of the cast pipe 5, makes the cast pipe 5 fixed above the base 1, starts the motor 26, the output end of the motor 26 drives the driving gear 27 to rotate, makes the driven gear 25 drive the rotating disk 24 located on the left to rotate, and due to the connection of the cast pipe 5, the cast pipe 5 and the rotating disk 24 located on the right rotate at the same time.

[0042] The threaded rod 43 is rotated so that the slide plate 41 drives the adjustment plate 42 and the cleaning roller 46 to touch the outer wall of the casting pipe 5, and the motor 2 32 is started. The output end of the motor 2 32 drives the gear 33 to rotate, so that the rack 34 drives the cleaning roller 46 to move through the slider 35, and the cleaning roller 46 cleans the rotating casting pipe 5. Then the threaded rod 43 is rotated to reset the cleaning roller 46 to prevent the cleaning roller 46 from affecting the work of the coating roller 39. The coating in the storage box 310 is output to the outer wall of the coating roller 39 through the discharge pipe 311, and the hydraulic rod 37 drives the coating on the outer wall of the coating roller 39 to contact the outer wall of the casting pipe 5, so as to carry out the coating work.

[0043] When the cleaning roller 46 needs to be cleaned or replaced, the two rods 48 are pulled out from the two slots to remove the cleaning roller 46. When it needs to be fixed, the two rods 48 are released, and the elastic potential energy of the two springs 49 drives the rods 48 to be reinserted into the slots.

[0044] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A coating device for a cast pipe, comprising a base (1), characterized in that: A fixed rotating assembly (2) is fixedly mounted on the upper end of the base (1), and a cast pipe (5) is overlapped on the left and right parts of the fixed rotating assembly (2). A coating assembly (3) is fixedly mounted on the left and right parts of the upper end of the base (1), and an outer wall cleaning assembly (4) is fixedly mounted on the lower part of the coating assembly (3).

2. A coating device for cast pipes according to claim 1, characterized in that: The fixed rotation assembly (2) comprises two mounting plates (21), a storage groove is provided at the left upper end of the base (1), an adjusting screw (22) is rotatably connected to the inner wall of the storage groove, a moving block is fixedly installed at the lower end of the mounting plate (21) located on the left, the inner wall of the moving block is threadedly connected to the outer wall of the adjusting screw (22), the lower end of the mounting plate (21) located on the right is fixedly installed with the upper right end of the base (1), limiting rods (23) are fixedly installed at the front and rear positions of the upper right end of the base (1), and the inner walls of the front and rear parts of the mounting plate (21) located on the left are slidably connected to the outer walls of the two limiting rods (23).

3. A coating device for cast pipes according to claim 2, characterized in that: The inner walls of the two mounting plates (21) are rotatably connected with a rotating disk (24), the left outer wall of the rotating disk (24) located on the left is fixedly sleeved with a driven gear (25), the left bottom of the mounting plate (21) located on the left is fixedly mounted with a motor 1 (26), the output end of the motor 1 (26) is fixedly sleeved with a driving gear (27), and the outer surface of the driving gear (27) is meshed with the outer surface of the driven gear (25).

4. A coating device for cast pipes according to claim 3, characterized in that: An electric push rod (28) penetrating the two rotating disks (24) is fixedly installed on the side of the two rotating disks (24) away from each other, an annular sleeve (29) is fixedly installed on the side of the outer wall of the two electric push rods (28) close to each other, and a plurality of sliding sleeves (210) arranged in an annular shape are fixedly installed on the outer wall of the annular sleeve (29), and a fixed sleeve (211) is fixedly installed on the output end of the two electric push rods (28), and the outer wall of the two fixed sleeves (211) is fixedly installed A plurality of mounting blocks (212) are arranged in a ring shape, the left and right parts of adjacent surfaces of the plurality of mounting blocks (212) are rotatably connected to rotating rods (213), the ends of the plurality of adjacent rotating rods (213) away from the mounting blocks (212) are rotatably connected to fixing blocks (214), the upper ends of the plurality of fixing blocks (214) overlap the inner wall of the casting pipe (5), and the ends of the plurality of adjacent fixing blocks (214) away from each other are slidably connected to the inner walls of the plurality of sliding sleeves (210).

5. A coating device for cast pipes according to claim 1, characterized in that: The coating assembly (3) comprises a mounting frame (31), the left and right parts of the lower end of the mounting frame (31) are fixedly mounted on the left and right parts of the upper end of the base (1), a second motor (32) is fixedly mounted at the rear position of the middle part of the upper end of the mounting frame (31), a gear (33) is fixedly sleeved at the output end of the second motor (32), a rack (34) is slidably connected to the middle part of the upper end of the mounting frame (31), the upper end of the rack (34) is meshed with the outer surface of the gear (33), and the mounting frame (31) is fixedly mounted on the output end of the second motor (32). 1) is provided with a slide groove in the middle of the upper end, a slider (35) is slidably connected to the inner wall of the slide groove, the upper end of the slider (35) is fixedly connected to the left part of the lower end of the rack (34), a connecting plate (36) is fixedly installed at the lower end of the slider (35), a hydraulic rod (37) is fixedly installed at the middle part of the lower end of the connecting plate (36), a moving plate (38) is fixedly installed at the output end of the hydraulic rod (37), and a coating roller (39) is rotatably connected to the rear part of the lower end of the moving plate (38).

6. A coating device for cast pipes according to claim 5, characterized in that: A material storage box (310) is fixedly mounted on the rear portion of the upper end of the mounting frame (31), and a discharge pipe (311) penetrating the top of the mounting frame (31) is fixedly mounted on the lower end of the material storage box (310), wherein the end of the discharge pipe (311) away from the material storage box (310) is located above the coating roller (39).

7. A coating device for cast pipes according to claim 6, characterized in that: The outer wall cleaning component (4) comprises a slide plate (41), the left and right sides of the slide plate (41) are slidably connected to the inner wall of the front part of the movable plate (38), an adjusting plate (42) is fixedly installed at the lower end of the slide plate (41), connecting blocks (45) are fixedly installed at the left and right parts of the lower end of the adjusting plate (42), and cleaning rollers (46) are overlapped on opposite sides of the two connecting blocks, a threaded rod (43) is threadedly connected to the right position of the front upper end of the movable plate (38), and a sliding rod (44) is slidably connected to the left position of the front upper end of the movable plate (38), and the lower end of the sliding rod (44) and the lower end of the threaded rod (43) are fixedly connected to the left and right parts of the upper end of the adjusting plate (42).

8. A coating device for cast pipes according to claim 7, characterized in that: Slots are provided on the left and right sides of the cleaning roller (46); fixed frames (47) are fixedly installed on the left and right sides of the adjustment plate (42); the two fixed frames (47) are slidably connected to the sides away from each other with an insertion rod (48) penetrating the two connecting blocks (45); the sides of the outer walls of the two insertion rods (48) close to each other are movably sleeved with the inner wall of the slot; the sides of the outer walls of the two insertion rods (48) close to each other are movably sleeved with springs (49); the ends of the two springs (49) close to each other are fixedly connected to the sides of the two connecting blocks (45) away from each other; and the ends of the two springs (49) away from each other are fixedly connected to the opposite sides of the bottoms of the two fixed frames (47).

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