Coating spraying device for wall surface and spraying method thereof

Abstract

The invention discloses a coating spraying device for the surface of a wall and a spraying method thereof, and relates to the technical field of coating spraying, the coating spraying device comprises a supporting column, a pushing mechanism, a fixing mechanism, a moving mechanism and a spraying mechanism, a base is arranged at the bottom end of the supporting column and fixedly connected with the supporting column, and the pushing mechanism is arranged at the top end of the supporting column and fixedly connected with the moving mechanism. The top ends of the pushing mechanisms are provided with the fixing mechanisms, the two ends of the moving mechanism are provided with the pushing mechanisms, the moving mechanism is provided with the spraying mechanism, the pushing mechanisms are used for pushing the fixing mechanisms and the moving mechanism to move, and the fixing mechanisms are used for playing a stabilizing role when the rolling brush works and preventing the whole device from shaking due to motor work or external factors. And the moving mechanism is used for controlling the rolling brush to move, and the spraying mechanism is used for providing paint when the rolling brush moves.

Description

Technical Field

[0001] The invention relates to the technical field of paint spraying, in particular to a paint spraying device for a wall surface and a spraying method thereof. Background Art

[0002] Exterior wall spraying construction is a type of building exterior wall engineering. Exterior wall spraying construction of buildings, by spraying a layer of paint on the surface of the exterior wall, the exterior wall paint can prevent rain, dew and water vapor in the air from penetrating into the building structure, thereby achieving the effect of waterproofing and moisture-proofing; and can improve the color and beauty of the building's exterior wall, provide rich colors and a variety of styles, decorate the appearance of the building, enhance its beauty, and extend the service life of the building, reducing the cost of repair and maintenance.

[0003] Most existing spraying methods use manual spraying or device-assisted spraying, which results in low work efficiency and cannot guarantee the uniformity of spraying. Spraying of the top wall is also a problem during the spraying process. There is shaking during the above spraying process, which makes it impossible to maintain uniform spraying, bringing uncontrollable risks to the stability of spraying. Summary of the invention

[0004] The object of the present invention is to provide a paint spraying device and a spraying method for a wall surface, so as to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A paint spraying device for a wall surface comprises a support column, a pushing mechanism, a fixing mechanism, a moving mechanism and a spraying mechanism. A base is provided at the bottom end of the support column, the base is fixedly connected to the support column, a pushing mechanism is provided at the top end of the support column, a fixing mechanism is provided at the top end of the pushing mechanism, pushing mechanisms are provided at both ends of the moving mechanism, and a spraying mechanism is provided on the moving mechanism.

[0007] The support column is installed with the moving mechanism according to the wall surface to be brushed. When it is against the top wall, the support column and the moving mechanism are installed vertically. When it is against the side wall, the support column and the moving mechanism are installed parallel. The pushing mechanism is used to push the fixing mechanism and the moving mechanism to move. The fixing mechanism is used to play a stabilizing role when the roller brush is working to prevent the whole device from shaking due to the operation of the motor or external factors, thereby causing the roller brush itself to shake or deviate, resulting in uneven spraying. The moving mechanism is used to control the movement of the roller brush. The spraying mechanism is used to provide paint when the roller brush moves.

[0008] Furthermore, the pushing mechanism includes a hydraulic rod, a connecting member A is provided at the bottom end of one side of the hydraulic rod, one end of the connecting member A is fixedly connected to the hydraulic rod, and the other end of the connecting member A is fixedly connected to the support column. The fixed end of the hydraulic rod is located on the upper surface of the support column, a moving mechanism is provided on one side of the output end of the hydraulic rod, a fixing mechanism is provided on the upper surface of the output end of the hydraulic rod, and the connecting member A is bolted to the top end of one side of the support column.

[0009] A connecting piece A is provided at the bottom end of the hydraulic rod, and the connecting piece A is used to connect the hydraulic rod with the supporting column.

[0010] Furthermore, the fixing mechanism includes a fixed block, which is fixedly connected to the output end of the hydraulic rod, a groove A is provided on the fixed block, a moving block A is provided in the groove A, a through hole is provided in the moving block A, a spring A is provided at the bottom of the moving block A, one end of the spring A is fixedly connected to the bottom of the moving block A, and the other end of the spring A is fixedly connected to the fixed block, a sealing block is provided in the groove A, the sealing block is fixedly connected to the fixed block, the moving block A, the through hole and the sealing block are arranged along the same central axis, a vacuum suction cup is provided at the top of the moving block A, the vacuum suction cup is fixedly connected to the moving block A, and the vent of the vacuum suction cup is connected to the through hole.

[0011] The moving block A cooperates with the groove A, so that the moving block A moves axially, and the spring A is used to provide elastic potential energy so that the moving block returns to its original position without external influence. The sealing block cooperates with the through hole, so as to be used to seal the ventilation in the vacuum suction cup. The vacuum suction cup is used to stabilize the device. When the pushing mechanism controls the fixing mechanism to move, the vacuum suction cup in the fixing mechanism will squeeze the wall, and the air in the vacuum suction cup will be discharged outward. During this period, the sealing block will move to the through hole to block the vent, so that negative pressure will be formed in the vacuum suction cup, and the vacuum suction cup will generate suction on the wall to achieve mutual stability between the moving mechanism and the wall. After stopping working, the pushing mechanism controls the fixing mechanism to move downward, so that the sealing block will be separated from the through hole, so that external air will enter the vacuum suction cup through the vent, so that the internal pressure of the vacuum suction cup will increase, and gradually restore to normal pressure, so as to achieve the separation of the fixing mechanism and the wall.

[0012] Furthermore, the moving mechanism includes three moving tracks, and connecting members B are provided at both ends of the three moving tracks.

[0013] The movable tracks are mounted to each other via connectors B, so that the number of movable tracks can be increased according to the length of the wall to be painted.

[0014] Furthermore, a sliding block is provided on the moving track, a rotating motor is provided on one side of the sliding block, the rotating motor is fixedly connected to the sliding block, a rotating rod is provided at the output end of the rotating motor, one end of the rotating rod is fixedly connected to the output end of the rotating motor, a gear is provided at the other end of the rotating rod, the gear is fixedly connected to the rotating rod, moving grooves are opened on both sides of the moving track, tooth edges are provided in the moving grooves, and the gears are meshed with the tooth surfaces of the tooth edges.

[0015] The rotating motor is used as a power source to control the rotation of the rotating rod, and the rotating rod drives the gear to rotate. Since the gear is meshed with the tooth edge and tooth surface, the gear drives the sliding block to move.

[0016] Furthermore, a groove B is provided at the top of the sliding block, a moving block B is provided in the groove B, a spring B is provided at the bottom of the moving block B, one end of the spring B is fixedly connected to the bottom of the moving block B, the other end of the spring B is fixedly connected to the sliding block, a roller brush is provided on the upper surface of the moving block B, a brush plate is provided on one side of the roller brush, and a spraying mechanism is provided on the other side of the roller brush.

[0017] The moving block B cooperates with the groove B, so that the moving block B moves axially. The spring B is used to provide elastic potential energy, which plays a shock-absorbing role when the sliding block moves. It also prevents the roller brush from being greatly squeezed and damaged due to the operation of the pushing mechanism. When the roller brush moves, the spring B also prevents the roller brush from shaking and deviating due to the bulge of the wall. The brush plate is used to deal with the coating liquid remaining after the roller brush is rolled to make the coating surface more uniform.

[0018] Furthermore, the spraying mechanism includes a nozzle and a diverter pipe, the diverter pipe is fixedly connected to the top of the moving block B, the nozzle is connected to the diverter pipe, a liquid inlet hole is opened on one side of the moving block B, and the liquid inlet hole is connected to the diverter pipe.

[0019] The nozzle is the output end of the spraying mechanism and is located in front of the roller brush. It is used to adhere the coating liquid to the wall surface and use the roller brush and brush plate to paint the coating liquid. The liquid inlet is the output end of the spraying mechanism and is used to connect the external coating liquid pipeline.

[0020] Furthermore, a bolt hole A is provided on one side of the support column, and a bolt hole B is provided on the top of the support column. The bolt hole A and the bolt hole B are used to connect the connecting piece A with bolts.

[0021] The bolt hole A and the bolt hole B are used to be bolted to the connecting piece A, so that according to the wall surface to be painted, when it is a top wall, the bolt hole A of the support column is bolted to the connecting piece A, and when it is a side wall, the bolt hole B of the support column is bolted to the connecting piece A.

[0022] Furthermore, a paint spraying device and a spraying method for a wall surface are provided, wherein the spraying method comprises the following steps:

[0023] S1: Assemble the moving mechanisms with the connecting parts, and then install the pushing mechanisms on both sides of the moving mechanisms. Then, according to the wall to be painted, the support column and the moving mechanism are installed vertically for the top wall, and parallel for the side wall;

[0024] S2: The fixed mechanism is controlled to move by the pushing mechanism, and then the vacuum suction cup in the fixed mechanism will squeeze the wall surface. At the same time, the sealing block will move to the vent hole to block the vent hole, so that the vacuum suction cup will generate suction force on the wall surface, so that the moving mechanism and the wall surface are mutually stable, and during the period when the fixed mechanism is controlled to move by the pushing mechanism, the roller brush in the moving mechanism will contact the wall surface;

[0025] S3: After the fixing mechanism is finished working, the sliding block is controlled to move by rotating the motor, and the sliding block drives the roller brush to move. Since the roller brush contacts the wall, the wall is painted.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The fixed mechanism is controlled to move by the pushing mechanism, and then the vacuum suction cup in the fixed mechanism will squeeze the wall, and the air in the vacuum suction cup will be discharged outward. At the same time, the sealing block will move to the through hole to block the vent, so that negative pressure will be formed in the vacuum suction cup. The vacuum suction cup will generate suction on the wall to achieve mutual stability between the moving mechanism and the wall. After stopping working, the fixed mechanism is controlled to move downward by the pushing mechanism, so that the sealing block will be separated from the through hole, so that external air will enter the vacuum suction cup through the vent, increasing the internal pressure of the vacuum suction cup and gradually returning to normal pressure, thereby achieving separation of the fixed mechanism from the wall.

[0028] 2. After the fixing mechanism works, when the roller brush moves, the vacuum suction cup in the fixing mechanism stabilizes the entire device, and the spring B in the moving mechanism also plays a role in shock absorption and anti-convexity. The combination of the two can improve the stability and stability of the roller brush during operation, greatly enhancing the integrity of wall painting.

[0029] 3. The present invention is installed in combination, so that according to the wall to be painted, when it is a top wall, the bolt hole A of the support column is bolted to the connecting piece A, and when it is a side wall, the bolt hole B of the support column is bolted to the connecting piece A. In addition, the movable rails are installed with each other through the connecting piece B, so that the number of movable rails can be increased according to the length of the wall to be painted. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the overall device of the present invention used for the top wall;

[0031] Figure 2 This is a schematic diagram of the structure of the overall device of the present invention used for the side wall;

[0032] Figure 3 It is a structural schematic diagram of the side surface of the moving mechanism of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the front side of the moving mechanism of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the sliding block of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure inside the fixing mechanism of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the vacuum suction cup of the present invention;

[0037] Figure 8 It is a schematic diagram of the structure inside the sliding track of the present invention;

[0038] Fig. 9 It is a schematic diagram of the structure inside the sliding block of the present invention;

[0039] Fig.10 For the present invention Figure 8 Schematic diagram of the structure at the local A in the middle;

[0040] Fig.11 It is a schematic structural diagram of the support column of the present invention.

[0041] In the figure: 1. support column; 11. bolt hole A; 12. bolt hole B; 2. pushing mechanism; 21. hydraulic rod; 22. connecting piece A; 3. fixing mechanism; 31. fixing block; 311. groove A; 32. moving block A; 321. through hole; 33. spring A; 34. sealing block; 35. vacuum suction cup; 4. moving mechanism; 41. moving track; 411. moving groove; 412. tooth edge; 42. connecting piece B; 43. sliding block; 431. groove B; 44. rotating motor; 45. rotating rod; 46. gear; 47. moving block B; 471. liquid inlet hole; 48. spring B; 5. spraying mechanism; 51. nozzle; 52. diverter pipe; 6. base; 7. roller brush; 8. brush plate. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example:

[0044] like Figures 1 to 11As shown, the present invention provides a paint spraying device for a wall surface, the paint spraying device comprises a support column 1, a pushing mechanism 2, a fixing mechanism 3, a moving mechanism 4 and a spraying mechanism 5, the bottom end of the support column 1 is provided with a base 6, the base 6 is fixedly connected to the support column 1, the top of the support column 1 is provided with a pushing mechanism 2, the top of the pushing mechanism 2 is provided with a fixing mechanism 3, the moving mechanism 4 is provided with pushing mechanisms 2 at both ends, and the moving mechanism 4 is provided with a spraying mechanism 5;

[0045] Specifically, the support column 1 is installed with the moving mechanism 4 according to the wall surface to be brushed. When it is against the top wall, the support column 1 and the moving mechanism 4 are installed vertically. When it is against the side wall, the support column 1 and the moving mechanism 4 are installed parallel. The pushing mechanism 2 is used to push the fixing mechanism 3 and the moving mechanism 4 to move. The fixing mechanism 3 is used to play a stabilizing role when the roller brush 7 is working to prevent the motor from working or external factors from causing the entire device to shake, thereby causing the roller brush 7 itself to shake or deviate, resulting in uneven spraying. The moving mechanism 4 is used to control the movement of the roller brush 7, and the spraying mechanism 5 is used to provide paint when the roller brush 7 moves.

[0046] like Figure 1 to Figure 4 As shown, the pushing mechanism 2 includes a hydraulic rod 21, a connecting member A22 is provided at the bottom end of one side of the hydraulic rod 21, one end of the connecting member A22 is fixedly connected to the hydraulic rod 21, and the other end of the connecting member A22 is fixedly connected to the support column 1, the fixed end of the hydraulic rod 21 is located on the upper surface of the support column 1, a moving mechanism 4 is provided on one side of the output end of the hydraulic rod 21, a fixing mechanism 3 is provided on the upper surface of the output end of the hydraulic rod 21, and the connecting member A22 is bolted to the top end of one side of the support column 1;

[0047] Specifically, a connecting piece A22 is provided at the bottom end of the hydraulic rod 21 , and the connecting piece A22 is used to connect the hydraulic rod 21 with the support column 1 .

[0048] like Figure 1 to Figure 4 , Figure 6 , Figure 7 As shown, the fixing mechanism 3 includes a fixing block 31, which is fixedly connected to the output end of the hydraulic rod 21, a groove A311 is provided on the fixing block 31, a moving block A32 is provided in the groove A311, a through hole 321 is provided in the moving block A32, a spring A33 is provided at the bottom of the moving block A32, one end of the spring A33 is fixedly connected to the bottom of the moving block A32, and the other end of the spring A33 is fixedly connected to the fixing block 31, a sealing block 34 is provided in the groove A311, and the sealing block 34 is fixedly connected to the fixing block 31, the moving block A32, the through hole 321 and the sealing block 34 are arranged along the same central axis, a vacuum suction cup 35 is provided at the top of the moving block A32, the vacuum suction cup 35 is fixedly connected to the moving block A32, and the vent hole of the vacuum suction cup 35 is connected to the through hole 321;

[0049] Specifically, the moving block A32 cooperates with the groove A311, so that the moving block A32 moves axially, and the spring A33 is used to provide elastic potential energy so that the moving block returns to its original position without external influence. The sealing block 34 cooperates with the through hole 321 to seal the ventilation in the vacuum suction cup 35. The vacuum suction cup 35 is used to stabilize the device. When the pushing mechanism 2 controls the fixing mechanism 3 to move, the vacuum suction cup 35 in the fixing mechanism 3 will squeeze the wall, and the air in the vacuum suction cup 35 will be discharged outward. During the working period, the sealing block 34 will move to the through hole 321 to block the vent, so that negative pressure will be formed in the vacuum suction cup 35, and the vacuum suction cup 35 will generate suction on the wall, so that the moving mechanism 4 and the wall are mutually stable. After stopping working, the fixing mechanism 3 is controlled to move downward by the pushing mechanism 2, so that the sealing block 34 will be separated from the through hole 321, so that external air will enter the vacuum suction cup 35 through the vent, so that the internal pressure of the vacuum suction cup 35 increases and gradually returns to normal pressure, so that the fixing mechanism 3 is separated from the wall.

[0050] like Figure 1 to Figure 4 As shown, the moving mechanism 4 includes three moving rails 41 , and connecting pieces B42 are provided at both ends of the three moving rails 41 .

[0051] Specifically, the movable rails 41 are installed with each other via connectors B42, so that the number of movable rails 41 can be increased according to the length of the wall to be painted.

[0052] like Figure 1 to Figure 4 , Figure 8 to Figure 10 As shown, a sliding block 43 is provided on the moving track 41, a rotating motor 44 is provided on one side of the sliding block 43, the rotating motor 44 is fixedly connected to the sliding block 43, a rotating rod 45 is provided at the output end of the rotating motor 44, one end of the rotating rod 45 is fixedly connected to the output end of the rotating motor 44, a gear 46 is provided at the other end of the rotating rod 45, the gear 46 is fixedly connected to the rotating rod 45, moving grooves 411 are opened on both sides of the moving track 41, a toothed edge 412 is provided in the moving groove 411, and the gear 46 is meshed with the tooth surface of the toothed edge 412;

[0053] Specifically, the rotating motor 44 serves as a power source to control the rotating rod 45 to rotate, and the rotating rod 45 drives the gear 46 to rotate. Since the gear 46 is meshed with the tooth surface of the tooth edge 412, the gear 46 drives the sliding block 43 to move.

[0054] like Figure 5 , Fig. 9As shown, a groove B431 is provided at the top of the sliding block 43, a moving block B47 is provided in the groove B431, a spring B48 is provided at the bottom of the moving block B47, one end of the spring B48 is fixedly connected to the bottom of the moving block B47, and the other end of the spring B48 is fixedly connected to the sliding block 43, a roller brush 7 is provided on the upper surface of the moving block B47, a brush plate 8 is provided on one side of the roller brush 7, and a spraying mechanism 5 is provided on the other side of the roller brush 7;

[0055] Specifically, the moving block B47 cooperates with the groove B431, so that the moving block B47 moves axially. The spring B48 is used to provide elastic potential energy, which plays a shock-absorbing role when the sliding block 43 moves, and also prevents the roller brush 7 from being greatly squeezed and damaged due to the operation of the pushing mechanism 2. When the roller brush 7 moves, the spring B48 also prevents the roller brush 7 from shaking and deviating due to the bulge of the wall. The brush plate 8 is used to process the coating liquid remaining behind the roller brush 7 to make the coating surface more uniform.

[0056] like Figure 5 As shown, the spraying mechanism 5 includes a nozzle 51 and a shunt pipe 52. The shunt pipe 52 is fixedly connected to the top of the moving block B47. The nozzle 51 is connected to the shunt pipe 52. A liquid inlet hole 471 is provided on one side of the moving block B47. The liquid inlet hole 471 is connected to the shunt pipe 52.

[0057] Specifically, the nozzle 51 serves as the output end of the spray mechanism 5 and is located in front of the roller brush 7. It is used to adhere the coating liquid to the wall surface, and the coating liquid is brushed with the roller brush 7 and the brush plate 8. The liquid inlet hole 471 serves as the output end of the spray mechanism 5 and is used to connect an external coating liquid pipeline.

[0058] like Fig.11 As shown, a bolt hole A11 is provided on one side of the support column 1, and a bolt hole B12 is provided on the top of the support column 1. The bolt hole A11 and the bolt hole B12 are used to bolt the connecting piece A22;

[0059] Specifically, the bolt hole A11 and the bolt hole B12 are used to be bolted to the connecting piece A22, so that according to the wall surface to be painted, when it is a top wall, the bolt hole A11 of the support column 1 is bolted to the connecting piece A22, and when it is a side wall, the bolt hole B12 of the support column 1 is bolted to the connecting piece A22.

[0060] Working principle: Assemble the moving mechanism 4 with each other through the connecting parts, and then install the pushing mechanism 2 on both sides of the moving mechanism 4, and then according to the wall to be painted, when it is the top wall, the support column 1 is installed vertically with the moving mechanism 4, and when it is the side wall, the support column 1 is installed parallel with the moving mechanism 4. When in use, the fixing mechanism 3 is controlled to move by the pushing mechanism 2, and then the vacuum suction cup 35 in the fixing mechanism 3 will squeeze the wall, and the air in the vacuum suction cup 35 will be discharged outward. At the same time, the sealing block 34 will move to the vent to block the vent, so that negative pressure will be formed in the vacuum suction cup 35, and the vacuum suction cup 35 will generate suction on the wall, so as to achieve mutual stability between the moving mechanism 4 and the wall, and the pushing mechanism 2 controls the fixing mechanism During the movement, the roller brush 7 in the moving mechanism 4 will contact the wall, and because the bottom end of the moving block B47 is provided with a spring B48, the roller brush 7 will not be greatly squeezed and damaged due to the operation of the pushing mechanism 2. After the fixing mechanism 3 is completed, the sliding block 43 is controlled to move by rotating the motor 44, and the sliding block 43 will drive the roller brush 7 to move. Since the roller brush 7 contacts the wall, the wall is painted. When the roller brush 7 moves, the vacuum suction cup 35 in the fixing mechanism 3 plays a stabilizing role, and the spring B48 in the moving mechanism 4 also plays a shock absorbing and anti-convex surface role, so the combination of the two can improve the stability and stability of the roller brush 7 during operation, and greatly enhance the integrity of the wall painting.

[0061] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A paint spraying device for a wall surface, characterized in that: The paint spraying device comprises a support column (1), a pushing mechanism (2), a fixing mechanism (3), a moving mechanism (4) and a spraying mechanism (5); a base (6) is provided at the bottom end of the support column (1); the base (6) is fixedly connected to the support column (1); a pushing mechanism (2) is provided at the top end of the support column (1); a fixing mechanism (3) is provided at the top end of the pushing mechanism (2); pushing mechanisms (2) are provided at both ends of the moving mechanism (4); and a spraying mechanism (5) is provided on the moving mechanism (4).

2. A paint spraying device for a wall surface according to claim 1, characterized in that: The pushing mechanism (2) comprises a hydraulic rod (21), a connecting member A (22) is provided at the bottom end of one side of the hydraulic rod (21), one end of the connecting member A (22) is fixedly connected to the hydraulic rod (21), and the other end of the connecting member A (22) is fixedly connected to the support column (21), the fixed end of the hydraulic rod (21) is located on the upper surface of the support column (1), a moving mechanism (4) is provided on one side of the output end of the hydraulic rod (21), a fixing mechanism (3) is provided on the upper surface of the output end of the hydraulic rod (21), and the connecting member A (22) is bolted to the top end of one side of the support column (1).

3. A paint spraying device for a wall surface according to claim 2, characterized in that: The fixing mechanism (3) comprises a fixing block (31), the fixing block (31) being fixedly connected to the output end of the hydraulic rod (21), the fixing block (31) being provided with a groove A (311), a moving block A (32) being provided in the groove A (311), the moving block A (32) being provided with a through hole (321), a spring A (33) being provided at the bottom end of the moving block A (32), one end of the spring A (33) being fixedly connected to the bottom end of the moving block A (32), and the spring A The other end of the movable block A (33) is fixedly connected to the fixed block (31), a sealing block (34) is provided in the groove A (311), the sealing block (34) is fixedly connected to the fixed block (31), the through hole (321) and the sealing block (34) are arranged along the same central axis, a vacuum suction cup (35) is provided at the top of the movable block A (32), the vacuum suction cup (35) is fixedly connected to the movable block A (32), and the vent hole of the vacuum suction cup (35) is connected to the through hole (321).

4. A paint spraying device for a wall surface according to claim 3, characterized in that: The moving mechanism (4) comprises a moving track (41), three of which are provided, and connecting members B (42) are provided at both ends of the three moving tracks (41).

5. A paint spraying device for a wall surface according to claim 4, characterized in that: The movable track (41) is provided with a sliding block (43), a rotating motor (44) is provided on one side of the sliding block (43), the rotating motor (44) is fixedly connected to the sliding block (43), a rotating rod (45) is provided at the output end of the rotating motor (44), one end of the rotating rod (45) is fixedly connected to the output end of the rotating motor (44), a gear (46) is provided at the other end of the rotating rod (45), the gear (46) is fixedly connected to the rotating rod (45), and movable grooves (411) are provided on both sides of the movable track (41), a toothed edge (412) is provided in the movable groove (411), and the gear (46) is meshed with the toothed edge (412).

6. A paint spraying device for a wall surface according to claim 5, characterized in that: The top of the sliding block (43) is provided with a groove B (431), a moving block B (47) is arranged in the groove B (431), a spring B (48) is arranged at the bottom of the moving block B (47), one end of the spring B (48) is fixedly connected to the bottom of the moving block B (47), the other end of the spring B (48) is fixedly connected to the sliding block (43), a roller brush (7) is arranged on the upper surface of the moving block B (47), a brush plate (8) is arranged on one side of the roller brush (7), and a spraying mechanism (5) is arranged on the other side of the roller brush (7).

7. A paint spraying device for a wall surface according to claim 6, characterized in that: The spraying mechanism (5) comprises a nozzle (51) and a shunt pipe (52); the shunt pipe (52) is fixedly connected to the top of the moving block B (47); the nozzle (51) is connected to the shunt pipe (52); a liquid inlet hole (471) is provided on one side of the moving block B (47); and the liquid inlet hole (471) is connected to the shunt pipe (52).

8. A paint spraying device for a wall surface according to claim 7, characterized in that: A bolt hole A (11) is provided on one side of the support column (1), and a bolt hole B (12) is provided on the top of the support column (1). The bolt hole A (11) and the bolt hole B (12) are used for bolting a connecting piece A (22).

9. The spraying method of a paint spraying device for a wall surface according to claim 8, characterized in that: The spraying method comprises the following steps: S1: Assemble the moving mechanism (4) with each other through the connecting parts, then install the pushing mechanism (2) on both sides of the moving mechanism (4), and then install the support column (1) and the moving mechanism (4) vertically when painting the top wall, and install the support column (1) and the moving mechanism (4) parallelly when painting the side wall according to the wall surface to be painted; S2: The fixed mechanism (3) is controlled to move by the pushing mechanism (2), and then the vacuum suction cup (35) in the fixed mechanism (3) will press the wall surface, and at the same time, the sealing block (34) will move to the vent hole to block the vent hole, so that the vacuum suction cup (35) will generate suction force on the wall surface, so that the moving mechanism (4) and the wall surface are mutually stable, and during the period when the pushing mechanism (2) controls the movement of the fixed mechanism (3), the roller brush (7) in the moving mechanism (4) will contact the wall surface; S3: After the fixing mechanism (3) has completed its work, the sliding block (43) is controlled to move by rotating the motor (44), and the sliding block (43) drives the roller brush (7) to move. Since the roller brush (7) is in contact with the wall surface, the wall surface is painted.

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