A wall coating spraying robot

Abstract

The application discloses a wall coating spraying robot and belongs to the technical field of coating spraying, which comprises a mobile body, a spraying manipulator arranged on the mobile body, a material collecting seat installed on the spraying manipulator, a plurality of connecting tubes, one end of each of the connecting tubes being installed on the material collecting seat and the other end of each of the connecting tubes being detachably connected with a spraying nozzle, a sealing disc rotatably connected in the connecting tube, a transmission mechanism arranged on the outer wall of the connecting tube, a through-plugging mechanism connected with the sealing disc, when the spraying nozzle is blocked, the sealing disc is closed by operating the transmission mechanism, and the spraying holes of the spraying nozzle are synchronously dredged by the through-plugging mechanism when the sealing disc rotates, so that the coating spraying robot can avoid needing to stop and clean multiple times, the operation is simple, and the working efficiency is high; when the spraying nozzle needs to be detached, the sealing disc can be closed by the transmission mechanism, the transmission mechanism releases the restriction on the spraying nozzle at the moment, and then the spraying nozzle can be detached, the passage of the coating can be interrupted due to the closure of the sealing disc, the coating can be prevented from being sprayed out when the spraying nozzle is detached, and the operation safety is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of paint spraying technology, and more specifically, to a wall paint spraying robot. Background Technology

[0002] Wall spraying is a very popular wall treatment method and a key process in building decoration and wall maintenance. Compared with traditional roller brushing, spraying can bring a more delicate and smooth texture.

[0003] Manual spraying typically involves holding a spray gun and spraying the wall, but it suffers from problems such as low efficiency, uneven coating thickness, poor paint film consistency, and high labor intensity.

[0004] While existing spraying robots can achieve automated spraying, they generally suffer from the problem of nozzle clogging. When the nozzles are clogged, the machine must be stopped for disassembly and cleaning, which is cumbersome, inefficient, and seriously affects continuous operation. Furthermore, there is no effective protection when disassembling the nozzles. If the pressure is not released properly or completely, the high-pressure paint accumulated in the pipes may suddenly spray out, which can easily cause injury to workers, resulting in insufficient overall safety.

[0005] Therefore, it is necessary to provide a wall paint spraying robot to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a wall paint spraying robot to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A wall paint spraying robot, comprising: A mobile machine body is equipped with a spraying robot arm, and a material collection seat is installed on the spraying robot arm; Multiple connecting cylinders, one end of which is installed on the material collection seat, and the other end of the connecting cylinder is detachably connected to a nozzle; A sealing disc is rotatably connected inside the connecting cylinder. The outer wall of the connecting cylinder is provided with a transmission mechanism, which is used to drive the sealing disc to rotate and open, simultaneously restricting and releasing the nozzle. The unblocking mechanism, connected to the sealing plate, is used to unblock the nozzle orifice while the sealing plate rotates and closes.

[0008] Furthermore, a rotating shaft is rotatably connected to the inner wall of the connecting cylinder, the sealing disc is disposed on the rotating shaft, and one end of the rotating shaft extends to the outside of the connecting cylinder and is connected to a first bevel gear.

[0009] Furthermore, the transmission mechanism includes: Two support plates are disposed on the outer wall of the connecting cylinder, and a rotating rod is rotatably connected between the two support plates. The rotating rod is provided with a second bevel gear that meshes with the first bevel gear. One end of the rotating rod is provided with a rotating seat, and the support plate is provided with a limiting component for restricting the rotation of the rotating seat.

[0010] Furthermore, the outer wall of the rotary seat is provided with multiple limiting holes; The limiting component includes an L-shaped plate disposed on the support plate, a limiting rod adapted to the limiting hole passing through the L-shaped plate, a pull plate at one end of the limiting rod, and an elastic element between the pull plate and the L-shaped plate.

[0011] Furthermore, one end of the connecting cylinder is provided with an mounting cylinder, the outside of which is provided with external threads, and the inner wall of the nozzle is provided with internal threads that are compatible with the external threads of the mounting cylinder.

[0012] Furthermore, the outer wall of the nozzle is provided with an external gear ring, and the rotating rod is provided with a blocking rod that is adapted to the external gear ring.

[0013] Furthermore, a sleeve is provided on the mounting cylinder, and the plugging mechanism includes: A plug needle is slidably inserted into the sleeve, and a connecting rod is hinged to the lower end of the plug needle; The rotating shaft is also provided with a transition rod, the end of which is hinged to the other end of the connecting rod.

[0014] Furthermore, the material collection seat is provided with multiple arc-shaped seats, each of which is provided with a support shaft, and each of the connecting cylinders is located between two adjacent arc-shaped seats. The bottom of the connecting cylinder is connected to the material collection seat through a flexible hose. A connecting frame for the passage of the hose is provided between adjacent support shafts.

[0015] Furthermore, the material collection seat is provided with two vertical plates. One of the vertical plates is provided with a sleeve that is fitted over the support shaft on the end side. The sleeve is threaded with a fastening bolt for pressing the support shaft. The other vertical plate is rotatably connected to the support shaft on the other end side.

[0016] Furthermore, the side of the arc-shaped seat is provided with an arc groove, and the outer wall of the connecting cylinder is provided with a slider that is slidably connected to the arc groove, and the slider is provided with a screw hole; The top of the arc-shaped seat has two top grooves that communicate with the arc groove, and positioning bolts that are compatible with the screw holes are inserted into the top grooves.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, when the nozzle is blocked, the sealing disc is rotated and closed by operating the transmission mechanism. At the same time, when the sealing disc rotates, it will simultaneously clear the nozzle orifice through the unblocking mechanism. This can greatly avoid the need to stop the machine multiple times to disassemble and clean the nozzle. The operation is simple and fast, reducing a lot of time and labor intensity. The operation efficiency is high. The unblocking and the opening and closing of the sealing disc are linked. The structure is compact and can effectively ensure long-term continuous spraying operation.

[0018] 2. When it is necessary to disassemble the nozzle, the sealing disc can be rotated and closed by operating the transmission mechanism. At this time, the transmission mechanism releases the restriction on the nozzle, and the nozzle can then be removed for cleaning, inspection and replacement. Because the sealing disc is closed, the paint passage can be blocked, thereby preventing the spraying of accumulated paint when disassembling the nozzle, preventing injury to the workers, greatly improving operational safety, and being more in line with on-site safety requirements.

[0019] 3. When installing the nozzle, connect the nozzle to the connecting cylinder, and then use the transmission mechanism to rotate and open the sealing disc. At the same time, the transmission mechanism will drive the blocking rod to rotate to a vertical position. The blocking rod and the external gear ring work together to lock and restrict the nozzle. This not only prevents the nozzle from being disassembled without closing the sealing disc through the transmission mechanism due to negligence, but also prevents paint from spraying during disassembly, thus improving safety. Furthermore, it prevents the nozzle from accidentally loosening during use, providing better protection.

[0020] 4. This invention allows each arc-shaped seat and connecting cylinder to rotate around the support shaft, enabling one-time adjustment of the angles of the connecting cylinder and nozzle, suitable for large-area wall spraying, and suitable for complex scenarios such as corners and ceilings, and can be adjusted as needed; moreover, the connecting cylinder can be independently adjusted along the arc groove of the arc-shaped seat to achieve single-angle adjustment of the nozzle, precisely adapting to local spraying needs, and can be selected according to specific circumstances. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the painting robot of the present invention; Figure 2 This is a schematic diagram of the structure of each component on the material collection seat of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the structure of the arc-shaped seat after removing the material collection seat, from the bottom view. Figure 5 This is a top view schematic diagram of the material collection seat and nozzle of the present invention; Figure 6 This is a side view of the structure of the material collection seat and nozzle of the present invention. Figure 7This is a schematic diagram of the connecting cylinder and nozzle in the usage state of the present invention; Figure 8 for Figure 7 Enlarged structural diagram at point B; Figure 9 This is a schematic diagram of the internal structure of the connecting cylinder when the present invention is in use; Figure 10 This is a schematic diagram of the structure of the present invention when the nozzle is disassembled; Figure 11 This is a schematic diagram of the internal structure of the connecting cylinder when disassembling the nozzle according to the present invention.

[0022] Explanation of the labels in the diagram: 1. Moving body; 2. Spraying robot; 3. Material collection seat; 4. Connecting cylinder; 5. Nozzle; 6. Sealing plate; 7. Transmission mechanism; 71. Support plate; 72. Rotating rod; 73. Second bevel gear; 74. Rotary seat; 75. Limiting component; 751. L-shaped plate; 752. Limiting rod; 753. Pull plate; 754. Elastic element; 8. Unblocking mechanism; 81. Unblocking needle; 82. Connecting rod; 83. Adapter rod; 9. Rotating shaft; 10. First bevel gear; 11. Limiting hole; 12. Mounting cylinder; 13. External gear ring; 14. Blocking rod; 15. Sleeve; 16. Arc seat; 17. Support shaft; 18. Hose; 19. Connecting frame; 20. Vertical plate; 21. Sleeve; 22. Fastening bolt; 23. Arc groove; 24. Slider; 25. Screw hole; 26. Top groove; 27. Positioning bolt. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: Please see Figure 1-11 A wall paint spraying robot, comprising: The mobile body 1 is equipped with a spraying robot 2, and a material collection seat 3 is installed on the spraying robot 2. The mobile body 1 adopts a tracked or wheeled walking structure and has its own power and control system. The spraying robot 2 is a multi-degree-of-freedom robotic arm, and the material collection seat 3 is used to receive high-pressure paint and distribute it to each spraying output position. Multiple connecting cylinders 4, one end of which is installed on the material collection seat 3, and the other end of the connecting cylinder 4 is detachably connected to a nozzle 5; The sealing disc 6 is rotatably connected to the connecting cylinder 4. The outer wall of the connecting cylinder 4 is provided with a transmission mechanism 7, which is used to drive the sealing disc 6 to rotate and open and close, thereby restricting and releasing the nozzle 5. The unblocking mechanism 8 is connected to the sealing plate 6 and is used to unblock the nozzle 5's spray hole while the sealing plate 6 rotates and closes.

[0025] During operation, the mobile body 1 is moved to the working position, and the spraying robot 2 adjusts its posture so that the nozzle 5 on the material collection seat 3 is in the corresponding spraying area. High-pressure paint is delivered to the material collection seat 3 through the pipeline. The material collection seat 3 distributes the paint to each connecting cylinder 4. The sealing plate 6 in the connecting cylinder 4 is in the open state, and the paint is finally sprayed out through the nozzle 5, so that subsequent wall spraying operations can be carried out. The mobile body 1 and the spraying robot 2 work together to complete the automated wall spraying.

[0026] When nozzle 5 becomes clogged, the sealing disc 6 can be rotated 90 degrees to close by operating the transmission mechanism 7, thus sealing the internal channel of the connecting cylinder 4. Simultaneously, the rotation of the sealing disc 6 also drives the unblocking mechanism 8, which clears the nozzle orifice of 5. This greatly reduces the need for multiple shutdowns to disassemble and clean the nozzle 5, making the operation simple and quick, significantly reducing time and labor intensity, and increasing work efficiency. The unblocking and sealing disc 6 opening and closing are linked, and the compact structure effectively ensures long-term continuous spraying operations. After unblocking, the sealing disc 6 is rotated open again by the transmission mechanism 7, and the unblocking mechanism 8 resets, allowing spraying operations to continue.

[0027] When nozzle 5 needs to be disassembled, the sealing disc 6 can be rotated and closed by operating the transmission mechanism 7. At this time, the transmission mechanism 7 releases the restriction on nozzle 5, and then nozzle 5 can be removed for cleaning or repair and replacement. Because the sealing disc 6 is closed, it can block the paint passage, thereby preventing the spraying of accumulated paint when disassembling nozzle 5, preventing injury to workers, greatly improving operational safety, and being more in line with on-site safety requirements. When installing nozzle 5, connect nozzle 5 to connecting cylinder 4, and then use transmission mechanism 7 to rotate and open sealing disc 6. At the same time, transmission mechanism 7 restricts nozzle 5, which not only prevents nozzle 5 from being disassembled without closing sealing disc 6 due to negligence, but also prevents paint spraying during disassembly, thus improving safety; it also prevents nozzle 5 from accidentally loosening during use, providing better protection.

[0028] For preferred options, please refer to [link / reference]. Figure 7 and Figure 9-11 The inner wall of the connecting cylinder 4 is rotatably connected to a rotating shaft 9, and the sealing plate 6 is set on the rotating shaft 9. One end of the rotating shaft 9 extends to the outside of the connecting cylinder 4 and is connected to a first bevel gear 10.

[0029] Specifically, the transmission mechanism 7 drives the first bevel gear 10 to rotate, which in turn drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the sealing plate 6 to rotate synchronously, thus achieving the opening and closing effect.

[0030] For preferred options, please refer to [link / reference]. Figure 3 and Figure 7-11 The transmission mechanism 7 includes: Two support plates 71 are provided on the outer wall of the connecting cylinder 4. A rotating rod 72 is rotatably connected between the two support plates 71. A second bevel gear 73 that meshes with the first bevel gear 10 is provided on the rotating rod 72. One end of the rotating rod 72 is provided with a rotating seat 74, and the support plate 71 is provided with a limiting component 75 for limiting the rotation of the rotating seat 74.

[0031] Specifically, rotating the rotary seat 74 will drive the rotating rod 72 and the second bevel gear 73 to rotate. The rotation of the second bevel gear 73 will drive the first bevel gear 10 to rotate, which in turn will drive the rotating shaft 9 and the sealing plate 6 to rotate. After adjustment, the rotary seat 74 is locked by the limiting component 75 to fix the position of the sealing plate 6. The sealing plate 6 will not rotate on its own due to pressure, and the operation is stable.

[0032] Preferably, please refer to the figure. Figure 3 and Figure 7-11 The outer wall of the rotary seat 74 is provided with multiple limiting holes 11; The limiting component 75 includes an L-shaped plate 751 disposed on the support plate 71. A limiting rod 752 adapted to the limiting hole 11 is movably passed through the L-shaped plate 751. A pull plate 753 is provided at one end of the limiting rod 752. An elastic element 754 is provided between the pull plate 753 and the L-shaped plate 751. The elastic element 754 in this application can be a spring.

[0033] Specifically, when it is necessary to rotate the rotary seat 74, first pull the pull plate 753 to make the limit rod 752 exit the limit hole 11 of the rotary seat 74. The elastic element 754 will be stretched and deformed. At this time, the rotary seat 74 is no longer restricted, and the rotary seat 74 can be rotated to drive the rotating rod 72 and the second bevel gear 73 to rotate. Once the rotary seat 74 has rotated to the corresponding position, the pull plate 753 is released. The reset of the elastic element 754 will drive the limit rod 752 to move. Finally, the limit rod 752 will retract and insert into the limit hole 11, thereby locking and limiting the rotary seat 74.

[0034] For preferred options, please refer to [link / reference]. Figure 7-11 One end of the connecting cylinder 4 is provided with an installation cylinder 12. The outside of the installation cylinder 12 is provided with an external thread, and the inner wall of the nozzle 5 is provided with an internal thread that matches the external thread of the installation cylinder 12.

[0035] Specifically, when installing nozzle 5, align the internal thread of nozzle 5 with the external thread of mounting cylinder 12, and rotate nozzle 5 to complete the threaded fastening connection. To disassemble, simply rotate in the opposite direction to remove it. Installation and disassembly are quick, can be operated by a single person, and have low maintenance costs.

[0036] In this embodiment, preferably, please refer to [reference needed]. Figure 3 and Figure 6-11 The outer wall of the nozzle 5 is provided with an outer gear ring 13, and the rotating rod 72 is provided with a blocking rod 14 that is adapted to the outer gear ring 13.

[0037] With this design, after the nozzle 5 is tightened and installed, rotating the rotating base 74 will drive the rotating rod 72 and the second bevel gear 73 to rotate. The rotation of the second bevel gear 73 will drive the first bevel gear 10 to rotate. The first bevel gear 10 will drive the rotating shaft 9 and the sealing plate 6 to rotate. At this time, the sealing plate 6 will rotate and open. At the same time, when the rotating rod 72 rotates, it will drive the blocking rod 14 to rotate, so that the blocking rod 14 changes from a horizontal state to a vertical state. Finally, the blocking rod 14 will be locked in the tooth gap of the outer gear ring 13. That is, the rotation of the nozzle 5 can be restricted by the blocking rod 14, which can prevent the nozzle 5 from rotating and loosening during use, and prevent the nozzle 5 from being disassembled without the sealing plate 6 being closed by the transmission mechanism 7, thus eliminating paint splashing and ensuring safety and reliability.

[0038] During disassembly, rotating the lever 72 causes the sealing disc 6 to rotate and close. At this time, the lever 72 will also cause the blocking rod 14 to change from a vertical state to a horizontal state, that is, the blocking rod 14 releases the restriction on the outer gear ring 13 and the nozzle 5.

[0039] For preferred options, please refer to [link / reference]. Figure 9-11 A sleeve 15 is provided on the upper part of the mounting cylinder 12, and the plugging mechanism 8 includes: The plug needle 81 is slidably inserted into the sleeve 15, and the lower end of the plug needle 81 is hinged to the connecting rod 82. The rotating shaft 9 is also provided with a transition rod 83, the end of which is hinged to the other end of the connecting rod 82.

[0040] With this design, when it is necessary to unclog or disassemble the nozzle 5, the transmission mechanism 7 first drives the rotating shaft 9 and the sealing plate 6 to rotate, causing the sealing plate 6 to close in a horizontal position. At the same time, the rotating shaft 9 drives the adapter rod 83 to swing, and the adapter rod 83 drives the unclogging needle 81 to slide along the sleeve 15 through the connecting rod 82. At this time, the unclogging needle 81 moves upward and inserts into the spray hole of the nozzle 5, thus unclogging the spray hole of the nozzle 5. The movement of the unclogging needle 81 is completely linked with the sealing plate 6, requiring no additional power, and can automatically unclog without clogging the hole or interrupting the spraying; moreover, the unclogging needle 81 is stably guided, does not scratch the spray hole, and extends the nozzle life.

[0041] Once the blockage is cleared, the transmission mechanism 7 drives the rotating shaft 9 and the sealing plate 6 to rotate in opposite directions. Even if the sealing plate 6 is opened, the rotating shaft 9 will drive the unblocking needle 81 to move down and reset through the connecting rod 82, which will not affect the normal spraying of the nozzle 5.

[0042] Example 2: Please see Figure 2-6 Based on Embodiment 1, the material collection seat 3 is provided with multiple arc-shaped seats 16, each arc-shaped seat 16 is provided with a support shaft 17, and each connecting cylinder 4 is located between two adjacent arc-shaped seats 16. The bottom of the connecting cylinder 4 is connected to the material collection seat 3 through a flexible hose 18. A connecting frame 19 is provided between adjacent support shafts 17 for the passage of the flexible hose 18.

[0043] Specifically, the paint enters the hose 18 from the collection seat 3, then flows into the connecting cylinder 4, and finally is sprayed out through the nozzle 5. The connecting frame 19 not only avoids interference with the hose 18, but also constrains the direction of the hose 18 to prevent bending, resulting in good performance.

[0044] For preferred options, please refer to [link / reference]. Figure 2-6 The material collection seat 3 is provided with two vertical plates 20. One of the vertical plates 20 is provided with a sleeve 21 that is sleeved on the end side support shaft 17. The sleeve 21 is threaded with a fastening bolt 22 for pressing the support shaft 17. The other vertical plate 20 is rotatably connected to the other end side support shaft 17.

[0045] This design allows each arc-shaped seat 16 and connecting cylinder 4 to rotate around the support shaft 17 by loosening the fastening bolt 22, thereby uniformly adjusting the angles of all connecting cylinders 4 and nozzles 5. It enables one-time overall angle adjustment, making it suitable for large-area wall spraying, as well as complex scenarios such as corners and ceilings, and can be adjusted as needed.

[0046] After the angle is adjusted to the appropriate position, the fastening bolt 22 can be tightened to press the support shaft 17, thus completing the overall angle locking of the arc-shaped seat 16 and the connecting cylinder 4.

[0047] In this embodiment, preferably, please refer to [reference needed]. Figure 2-7 and Figure 9-11 The side of the arc-shaped seat 16 is provided with an arc groove 23, and the outer wall of the connecting cylinder 4 is provided with a slider 24 that is slidably connected to the arc groove 23. The slider 24 is provided with a screw hole 25. The top of the arc-shaped seat 16 has two top grooves 26 that communicate with the arc groove 23, and positioning bolts 27 that are compatible with the screw holes 25 are inserted into the top grooves 26.

[0048] This design allows the positioning bolt 27 to disengage from the screw hole 25, which in turn causes the arc-shaped seat 16 to rotate along its arc groove 23. This, in turn, causes the slider 24 to rotate along the arc groove 23, thereby adjusting the angle of the connecting cylinder 4 and the nozzle 5. This enables single-angle adjustment of the nozzle 5, precisely adapting to localized spraying needs and allowing for selection based on specific circumstances. After adjustment, the positioning bolt 27 is passed through the top groove 26 and screwed into the screw hole 25 of the slider 24, thus fixing the angle of a single set of connecting cylinder 4 and nozzle 5. Adjustment and locking are quick, resulting in high efficiency in on-site use.

[0049] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

Claims

1. A wall paint spraying robot, characterized in that, include: A mobile body (1) is provided with a spraying robot (2), and a material collection seat (3) is installed on the spraying robot (2). Multiple connecting cylinders (4) are installed at one end on the material collection seat (3), and the other end of the connecting cylinder (4) is detachably connected to a nozzle (5). The sealing disc (6) is rotatably connected inside the connecting cylinder (4). The outer wall of the connecting cylinder (4) is provided with a transmission mechanism (7) for driving the sealing disc (6) to rotate and open, and simultaneously restrict and release the nozzle (5). The unblocking mechanism (8) is connected to the sealing plate (6) and is used to unblock the nozzle (5) at the same time as the sealing plate (6) rotates and closes.

2. The wall paint spraying robot according to claim 1, characterized in that, The inner wall of the connecting cylinder (4) is rotatably connected to a rotating shaft (9), and the sealing plate (6) is disposed on the rotating shaft (9). One end of the rotating shaft (9) extends to the outside of the connecting cylinder (4) and is connected to a first bevel gear (10).

3. A wall paint spraying robot according to claim 2, characterized in that, The transmission mechanism (7) includes: Two support plates (71) are provided on the outer wall of the connecting cylinder (4), and a rotating rod (72) is rotatably connected between the two support plates (71). A second bevel gear (73) that meshes with the first bevel gear (10) is provided on the rotating rod (72). One end of the rotating rod (72) is provided with a rotating seat (74), and the support plate (71) is provided with a limiting component (75) for limiting the rotation of the rotating seat (74).

4. A wall paint spraying robot according to claim 3, characterized in that, The outer wall of the rotating base (74) is provided with multiple limiting holes (11); The limiting component (75) includes an L-shaped plate (751) disposed on the support plate (71), a limiting rod (752) adapted to the limiting hole (11) is movably passed through the L-shaped plate (751), a pull plate (753) is provided at one end of the limiting rod (752), and an elastic element (754) is provided between the pull plate (753) and the L-shaped plate (751).

5. A wall paint spraying robot according to claim 3, characterized in that, One end of the connecting cylinder (4) is provided with an installation cylinder (12), the outside of the installation cylinder (12) is provided with an external thread, and the inner wall of the nozzle (5) is provided with an internal thread that matches the external thread of the installation cylinder (12).

6. A wall paint spraying robot according to claim 5, characterized in that, The outer wall of the nozzle (5) is provided with an external gear ring (13), and the rotating rod (72) is provided with a blocking rod (14) that is compatible with the external gear ring (13).

7. A wall paint spraying robot according to claim 5, characterized in that, A sleeve (15) is provided on the upper part of the mounting cylinder (12), and the unblocking mechanism (8) includes: A plug needle (81) is slidably inserted into the sleeve (15), and a connecting rod (82) is hinged to the lower end of the plug needle (81). The rotating shaft (9) is also provided with a transition rod (83), the end of which is hinged to the other end of the connecting rod (82).

8. A wall paint spraying robot according to claim 1, characterized in that, The material collection seat (3) is provided with multiple arc-shaped seats (16), each arc-shaped seat (16) is provided with a support shaft (17), each connecting cylinder (4) is located between two adjacent arc-shaped seats (16), and the bottom of the connecting cylinder (4) is connected to the material collection seat (3) through a flexible hose (18). A connecting frame (19) is provided between adjacent support shafts (17) for the hose (18) to pass through.

9. A wall paint spraying robot according to claim 8, characterized in that, The material collection seat (3) is provided with two vertical plates (20). One of the vertical plates (20) is provided with a sleeve (21) sleeved outside the end support shaft (17). The sleeve (21) is threaded with a fastening bolt (22) for pressing the support shaft (17). The other vertical plate (20) is rotatably connected to the support shaft (17) on the other end.

10. A wall paint spraying robot according to claim 9, characterized in that, The side of the arc-shaped seat (16) is provided with an arc groove (23), and the outer wall of the connecting cylinder (4) is provided with a slider (24) that is slidably connected to the arc groove (23). The slider (24) is provided with a screw hole (25). The top of the arc-shaped seat (16) has two top grooves (26) that communicate with the arc groove (23), and a positioning bolt (27) that matches the screw hole (25) is inserted into the top groove (26).

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