Movable paint spraying device for building metal profiles

Abstract

The invention discloses a movable paint spraying device for building metal profiles, and relates to the technical field of profile paint spraying, the movable paint spraying device comprises two supports which are oppositely arranged, a sliding rail is mounted between the two supports, transition cylinders are fixedly arranged on the opposite sides of the two supports, one transition cylinder is sleeved with an operation box used for outer wall paint spraying, and the other transition cylinder is sleeved with an operation box used for outer wall paint spraying. A to-be-painted pipe is arranged between the two supports, the to-be-painted pipe is supported by a plurality of lifting jacking mechanisms, the operation box can pass through the to-be-painted pipe to move to the other transition barrel, a telescopic material pipe is arranged in one support, a multi-dimensional rotary spraying mechanism is arranged at the end of the telescopic material pipe, and the multi-dimensional rotary spraying mechanism is arranged on the other support. The multi-dimensional rotary spraying mechanism can extend into the pipe to be sprayed with paint along with the telescopic material pipe; when the movable paint spraying device for the building metal profiles is used, paint spraying and corrosion prevention can be conducted on the inner wall and the outer wall of a steel pipe, paint spraying is free of multiple dead angles and high in uniformity, the paint surface does not have the sagging phenomenon after spraying, and the movable paint spraying device is suitable for application and popularization.

Description

Technical Field

[0001] This invention relates to the field of profile painting technology, and more particularly to a mobile painting device for architectural metal profiles. Background Technology

[0002] In the field of building metal profile processing, the painting process is a key step in ensuring the corrosion resistance of the profiles and extending their service life.

[0003] Currently, traditional spray painting operations are mostly completed manually using handheld spray guns or stationary spray painting equipment. However, there are many technical challenges in the spray painting of long, narrow metal profiles (such as steel pipes and angle steel). Firstly, when painting manually, operators need to move around the profile repeatedly, which is not only labor-intensive, but also prone to uneven paint thickness, missed spots or drips due to differences in operating techniques. Especially for hidden parts such as the inner wall of the profile, manual spraying is difficult to guarantee comprehensive coverage. Secondly, while stationary spray painting equipment can improve efficiency, it is limited by a fixed spraying range and has poor adaptability to profiles of different lengths and specifications. It requires frequent adjustment of equipment parameters or replacement of tooling, which increases the complexity of the operation process. Thirdly, existing equipment can only perform single-layer spraying on the outer wall of the profile. If anti-corrosion treatment of the inner wall is required, a small spray gun often needs to be inserted into the pipe for operation. This not only results in low spraying efficiency but also makes it difficult to control the uniformity of the paint surface on the inner wall, easily leading to localized incomplete spraying. In addition, although some mobile painting equipment has a certain degree of mobility, it still has shortcomings in terms of pipe profile support clamping and all-round internal and external wall spraying, making it difficult to meet the demand for large-scale, high-quality profile painting.

[0004] Therefore, there is an urgent need for a mobile spraying device capable of spraying the entire range of the inner and outer walls of steel pipe profiles. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems by providing a mobile painting device for building metal profiles that can spray paint on the inner and outer walls of steel pipes for corrosion protection, with no dead corners, strong uniformity, and no dripping of paint on the surface after spraying.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a mobile painting device for building metal profiles, comprising two opposing supports, a sliding track installed between the two supports, and a transition cylinder fixedly installed on the opposite sides of the two supports. A running box for exterior wall painting is fitted on one of the transition cylinders. A pipe to be painted is provided between the two supports. The pipe to be painted is supported by multiple lifting support mechanisms. The specifications of the transition cylinder are consistent with the specifications of the pipe to be painted. The running box can move through the pipe to be painted to the other transition cylinder. A telescopic material tube is provided inside one of the supports. A multi-dimensional rotating spraying mechanism is provided at the end of the telescopic material tube. The multi-dimensional rotating spraying mechanism can extend into the pipe to be painted following the telescopic material tube.

[0007] Preferably, the lifting support mechanism includes movable legs hinged on both sides, a support roller is provided between the movable legs on both sides, a connecting ring is provided on both sides of the support roller, the connecting ring is connected to the hydraulic cylinder below, the bottom of the movable legs is provided with rollers adapted to the sliding track, the hydraulic cylinder can adjust the height of the support roller after it is running, and after the hydraulic cylinder is retracted, the distance between the paint spray pipe and the support roller increases, reserving space for the running box to pass through.

[0008] Preferably, a baffle and multiple sets of clamping mechanisms are provided between the two supports. The clamping mechanism includes movable clamps that swing on both sides. The two movable clamps are hinged together by a lifting rod. The lifting rod is connected to the output end of the cylinder. The end of the movable clamp is provided with an arc-shaped limiting plate. The upper and lower sides of the arc-shaped limiting plate are provided with limiting rollers. When the output end of the cylinder extends, the two movable clamps unfold outward. When the output end of the cylinder retracts, the two movable clamps close together to clamp the pipe to be painted.

[0009] Preferably, the movable clamp is located between the two guardrails and falls onto the guardrails when the movable clamp is deployed.

[0010] Preferably, the running box further includes a movable sleeve fitted on the transition cylinder. The inner walls of both ends of the movable sleeve are evenly provided with a plurality of guide wheels. After the guide wheels are in operation, the running box and the movable sleeve move together toward the pipe to be painted.

[0011] Preferably, the surface of the operating box is equipped with a pump and a fan, the paint pipe of the pump extends into the operating box, the inner wall of the movable sleeve is symmetrically provided with two spraying ring pipes, the paint pipe is connected to the two spraying ring pipes through a tee connector, and the inner ring of the spraying ring pipe is provided with a plurality of atomizing nozzles.

[0012] Preferably, both of the two spraying rings are provided with fixed guide rings on their exteriors, the operating box is provided with a Y-shaped air duct, one end of the air duct is connected to a fan, the two branches of the air duct are respectively connected to the corresponding guide rings, and the inner ring of the guide ring is provided with an air outlet slot.

[0013] Preferably, the outer wall of the telescopic tube is provided with a limiting disc, and the circumference of the limiting disc is provided with multiple travel wheels II. When the inner wall is painted, the travel wheels II are always in contact with the inner wall of the tube to be painted.

[0014] Preferably, the multi-dimensional rotary spraying mechanism includes a first bevel gear, a first material storage rotating body, a second material storage rotating body, and a second bevel gear. The first bevel gear and the first material storage rotating body are rotatably connected to the telescopic material tube via bearings. The first material storage rotating body is connected to the telescopic material tube, and the second material storage rotating body is connected to the first material storage rotating body. The second material storage rotating body is rotatably connected to the first material storage rotating body. A second bevel gear is provided at the connection between the second material storage rotating body and the first material storage rotating body, and the second bevel gear meshes with the first bevel gear.

[0015] Preferably, both the first and second storage rotating bodies are equipped with rotating plates. When the pressure of the paint impacts the rotating plates, the corresponding rotating bodies rotate. The first storage rotating body is equipped with an atomizing nozzle 2, and the second storage rotating body is equipped with an atomizing nozzle 3.

[0016] The mobile spray painting device for architectural metal profiles disclosed in this invention has the following advantages compared with the prior art: 1. Through the coordinated operation of the lifting top support mechanism and the clamping mechanism, stable support and positioning of the pipe to be painted are achieved. The lifting and retraction of the lifting top support mechanism and the clamping mechanism can avoid the moving operating box, ensuring smooth and stable operation of the painting process; 2. The moving sleeve moves smoothly along the transition cylinder and the pipe to be painted via the travel wheel, ensuring a stable distance between the spraying ring and the outer wall. The paint delivered by the pump is distributed to two spraying ring pipes through a three-way connector. The atomizing nozzle of the inner ring can evenly spray atomized paint, covering the entire circumference of the profile's outer wall. At the same time, the fan sends air to the guide ring through a Y-shaped air duct. The annular airflow formed by the air outlet slots can accelerate the diffusion and drying of paint mist, reduce sagging, and improve the uniformity and efficiency of the outer wall painting.

[0017] 3. The telescopic tube of the inner wall spraying system can penetrate deep into the tube to be sprayed, and the travel wheels on the limiting plate always fit against the inner wall, ensuring stability during movement. The multi-dimensional rotary spraying mechanism can spray the inner wall from different angles, solving the problems of many dead corners and poor uniformity in the inner wall spraying of traditional equipment, and achieving all-round coverage of the inner and outer walls of the profile.

[0018] 4. The running box can move back and forth between two transition cylinders to accommodate profiles of different lengths. Compared with traditional manual painting or fixed equipment, this device greatly reduces labor intensity and improves painting efficiency and quality, making it suitable for batch painting operations of large-scale building metal profiles. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the structure of a mobile spray painting device for architectural metal profiles according to the present invention. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of a mobile spray painting device for architectural metal profiles according to the present invention. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the moving sleeve and the running box in a mobile painting device for building metal profiles according to the present invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the moving sleeve and the running box in a mobile painting device for building metal profiles according to the present invention.

[0023] Figure 5 This invention relates to a mobile spray painting device for architectural metal profiles. Figure 3 A magnified structural diagram of point A in the middle.

[0024] Figure 6 This is a cross-sectional schematic diagram of the multi-dimensional rotating spraying mechanism in a mobile spraying device for architectural metal profiles according to the present invention.

[0025] Figure 7 This is a schematic diagram of the lifting top support mechanism in a mobile painting device for building metal profiles according to the present invention.

[0026] Figure 8 For the present invention Figure 7 A magnified structural diagram at point B in the middle.

[0027] Figure 9 This is a schematic diagram of the lowering and avoidance mechanism of the left lifting top support of a mobile painting device for building metal profiles according to the present invention.

[0028] Figure 10 This is a schematic diagram of the clamping mechanism in a mobile painting device for building metal profiles according to the present invention.

[0029] Figure 11 This is a modified schematic diagram of the clamping mechanism in a mobile painting device for building metal profiles according to the present invention.

[0030] In the diagram: 1. Support; 2. Sliding track; 3. Transition cylinder; 4. Moving sleeve; 41. Traveling wheel one; 5. Running box; 51. Pump; 511. Paint pipe; 512. Spraying ring pipe; 513. Atomizing nozzle one; 52. Fan; 521. Air duct; 522. Drainage ring; 6. Telescopic material pipe; 61. First bevel gear; 611. Bearing; 62. Material storage rotor one; 621. Atomizing nozzle two; 6 22. Rotating turntable; 63. Material storage rotating body II; 64. Atomizing nozzle III; 65. Second bevel gear; 66. Limiting plate; 67. Traveling wheel II; 7. Paint-to-be-sprayed tube; 71. Movable support leg; 72. Support roller; 73. Connecting ring; 8. Clamping mechanism; 81. Movable clamp; 82. Lifting rod; 83. Arc-shaped limiting plate; 84. Limiting roller; 9. Guard frame; 10. Cylinder; 11. Hydraulic cylinder. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0032] Please refer to Figure 1-11 A mobile painting device for building metal profiles includes two opposing supports 1, with a sliding track 2 installed between the two supports 1. The sliding track 2 can be fixed to the side wall of the support 1 or directly fixed to the ground. A transition cylinder 3 is fixedly installed on the opposite side of the two supports 1. A running box 5 for painting the outer wall is sleeved on one of the transition cylinders 3. A paint-to-be-painted pipe 7 is provided between the two supports 1. The paint-to-be-painted pipe 7 is supported by multiple lifting and supporting mechanisms.

[0033] In this embodiment, the pipe 7 to be painted is lifted by an external hoisting mechanism (such as a gantry crane) and placed on a lifting support mechanism. After placement, the pipe 7 to be painted is clamped and held by multiple sets of clamping mechanisms 8 to prevent the pipe from shaking or shifting during the painting process.

[0034] The specifications of the transition cylinder 3 are consistent with those of the pipe 7 to be painted (at least the outer diameter is consistent). Before use, the running box 5 is placed on the transition cylinder 3. After operation, the running box 5 can move through the pipe 7 to another transition cylinder 3. When the pipe 7 is to be painted, it can be painted evenly on the outer wall. The whole process does not require manual operation and has a high degree of automation.

[0035] Furthermore, one of the supports 1 is equipped with a telescopic material tube 6, which moves inward by external force. The end of the telescopic material tube 6 is equipped with a multi-dimensional rotary spraying mechanism, which can extend into the pipe 7 to be painted by following the telescopic material tube 6. External paint can enter the telescopic material tube 6 through the pump group and finally be sprayed out at different parts of the multi-dimensional rotary spraying mechanism to achieve the painting of the inner wall of the pipe 7 to be painted.

[0036] In other words, the horizontal movement of the operating box 5 achieves the painting of the outer wall, and the telescopic movement of the telescopic material pipe 6 achieves the painting of the inner wall. The two can operate independently or simultaneously to ensure that the inner and outer walls of the pipe are painted, thus preventing the steel pipe components from being corroded by the external environment in the building.

[0037] Please refer to this again. Figure 7-9 The lifting support mechanism includes movable support legs 71 hinged on both sides, and a support roller 72 is provided between the movable support legs 71 on both sides. The support roller 72 is provided with connecting rings 73 on both sides, and the connecting rings 73 are connected to the hydraulic cylinder 11 below. The bottom of the movable support legs 71 is provided with rollers adapted to the sliding track 2. After the hydraulic cylinder 11 is running, it can adjust the height of the support roller 72. After the hydraulic cylinder 11 is retracted, the distance between the paint spray pipe 7 and the support roller 72 increases, leaving space for the running box 5 to pass through.

[0038] In this embodiment, the outer diameters at both ends of the support roller 72 are larger than the outer diameter at the middle, so that the pipe 7 to be sprayed can fall naturally and stably in the middle. After it is stable, it is clamped by the clamping mechanism to prevent the pipe 7 to be sprayed from shaking or shifting. Under normal operating conditions, when the running box 5 moves onto the pipe to be painted 7, it will pass through the support roller 72 in sequence. The support roller 72 carries the pipe to be painted 7 above it. Therefore, the movable support leg 71 and the support roller 72 block the movement of the running box 5. To avoid this situation, when the running box 5 approaches the corresponding lifting support mechanism, the hydraulic cylinder 11 retracts in advance. At this time, the movable support legs 71 on both sides are spread apart by rollers. After the spread apart, the height of the support roller 72 is reduced as a whole, thereby increasing the distance between the pipe to be painted 77 and the support roller 72. This distance is the avoidance distance to meet the continuous and uninterrupted movement of the running box 5.

[0039] When the running box 5 passes the corresponding lifting top support mechanism, the output end of the hydraulic cylinder 11 extends to push the support roller 72 to rise, so that the support roller 72 contacts and supports the pipe 7 to be painted again. Similarly, when the running box 5 approaches the next lifting support mechanism, the corresponding hydraulic cylinder 11 contracts to lower the height of the support roller. This cycle continues until the running box 5 detaches from the pipe to be painted 7 and enters the transition cylinder 3. Once the running box 5 has passed through once, the painting work on the outer wall of the pipe is completed.

[0040] like Figure 10 , 11 As shown, a baffle 9 and multiple sets of clamping mechanisms 8 are also provided between the two supports 1. The baffle 9 is a cylindrical or quadrilateral strip structure, and its purpose is to enable the clamping mechanism 8 to unfold and clamp. The clamping mechanism 8 includes two movable clamps 81 that swing on both sides. The two movable clamps 81 are hinged together by a lifting rod 82. The lifting rod 82 is connected to the output end of the cylinder 10 through a hanging ring. The end of the movable clamp 81 is provided with an arc-shaped limiting plate 83. The upper and lower sides of the arc-shaped limiting plate 83 are provided with limiting rollers 84. The movable clamp 81 is located between two guardrails 9.

[0041] When the output end of cylinder 10 extends, the two movable clamps 81 unfold outward. After unfolding, the movable clamps 81 rotate outward and rest on the baffle 9 to prevent the movable clamps 81 from rotating too downward and causing poor rotation. When the output end of cylinder 10 retracts, the two movable clamps 81 close and clamp the pipe 7 to be painted, thereby preventing the pipe 7 to be painted from shaking or shifting, so as to ensure stable operation of inner and outer wall painting.

[0042] Because the inner wall of the arc-shaped limiting plate 83 is arc-shaped, it can increase the contact area with the pipe 7 to be sprayed, making the whole more stable.

[0043] In the present invention, please refer again to Figure 2 and Figure 3 The running box 5 also includes a movable sleeve 4 sleeved on the transition cylinder 3. Multiple travel wheels 41 are evenly provided on the inner walls of both ends of the movable sleeve 4. After the travel wheels 41 are in operation, the running box 5 and the movable sleeve 4 move together toward the pipe to be painted 7. In other words, the running box 5 is located in the middle of the moving sleeve 4, and the two are the same whole. The transition cylinder 3 passes through the moving sleeve 4 and the running box 5. When the traveling wheel 41 runs, the moving sleeve 4 and the running box 5 move together.

[0044] Specifically, the surface of the operating box 5 is provided with a pump 51 and a fan 52. The pump 51 has a suction pipe connected to the external paint, and the paint outlet pipe 511 extends into the operating box 5. The inner wall of the movable sleeve 4 is symmetrically provided with two spraying ring pipes 512. The paint outlet pipe 511 is connected to the two spraying ring pipes 512 through a three-way connector. The inner ring of the spraying ring pipe 512 is provided with multiple atomizing nozzles 513.

[0045] In other words, the external paint enters the paint pipe 511 through the extraction pipe and pump 51, and then is diverted to the spraying ring pipes 512 on both sides through the three-way connector. Finally, the paint in the spraying ring pipe 512 is sprayed onto the outer circumference of the pipe 7 to be painted through the atomizing nozzle 513, thus achieving the outer wall spraying.

[0046] However, in actual use, the paint sprayed on the outer wall of the pipe 7 to be painted has a certain stickiness, and the following travel wheel 41 will roll on the paint layer after running, thereby damaging the paint layer. To avoid this phenomenon, both of the spraying ring pipes 512 are provided with fixed guide rings 522 on their exteriors. The running box 5 is provided with a Y-shaped air duct 521. One end of the air duct 521 is connected to the fan 52. The two branches of the air duct 521 are respectively connected to the corresponding guide rings 522. The inner ring of the guide ring 522 is provided with an air outlet slot, which is inclined and the inclined position of the air outlet is directly opposite the paint spraying area.

[0047] After the fan 52 starts running, it draws outside air into the air duct 521. The air then enters the two guide rings 522 on both sides through the two branches of the air duct 521, and is finally ejected at high speed from the air outlet holes of the inner ring of the guide ring 522. Since the air outlet holes are tilted towards the spraying area of ​​the atomizing nozzle 513, the ejected airflow can quickly blow onto the paint that has just been sprayed on the outer wall of the paint-to-be-sprayed pipe 7, accelerating the evaporation of the solvent in the paint and allowing the paint layer to initially cure before the traveling wheel 41 arrives. This effectively prevents the traveling wheel 41 from crushing and damaging the undried paint layer, ensuring the smoothness and quality of the paint spraying on the outer wall.

[0048] Please refer to Figure 6 The outer wall of the telescopic tube 6 is provided with a limiting disc 66, and the circumference of the limiting disc 66 is provided with multiple traveling wheels 67. When the inner wall is being painted, the traveling wheels 67 are always in contact with the inner wall of the tube 7 to be painted. When the telescopic tube 6 extends into the tube 7 to be painted, the traveling wheels 67 roll along the inner wall of the tube 7 to be painted. On the one hand, this provides support for the telescopic tube 6 and prevents it from sagging due to its own weight and scraping against the tube wall. On the other hand, the rolling friction reduces the resistance when the telescopic tube 6 moves, ensuring that it can smoothly extend and retract within the tube 7 to be painted, and ensuring the continuity of the inner wall painting.

[0049] Preferably, the multi-dimensional rotary spraying mechanism includes a first bevel gear, a first material storage rotating body, a second material storage rotating body, and a second bevel gear. The first bevel gear and the first material storage rotating body are rotatably connected to the telescopic material tube via bearings. The first material storage rotating body is connected to the telescopic material tube, and the second material storage rotating body is connected to the first material storage rotating body. The second material storage rotating body is rotatably connected to the first material storage rotating body. A second bevel gear is provided at the connection between the second material storage rotating body and the first material storage rotating body, and the second bevel gear meshes with the first bevel gear.

[0050] Preferably, both the first and second storage rotating bodies are equipped with rotating plates. When the pressure of the paint impacts the rotating plates, the corresponding rotating bodies rotate. The first storage rotating body is equipped with an atomizing nozzle 2, and the second storage rotating body is equipped with an atomizing nozzle 3.

[0051] The multi-dimensional rotary spraying mechanism includes a first bevel gear 61, a first storage rotating body 62, a second storage rotating body 63, and a second bevel gear 65. The first bevel gear 61 and the first storage rotating body 62 are rotatably connected to the telescopic material tube 6 via bearings 611. The first storage rotating body 62 is connected to the telescopic material tube 6. The second storage rotating body 63 is connected to the first storage rotating body 62 and is rotatably connected to the first storage rotating body 62. A second bevel gear 65 is provided at the connection between the second storage rotating body 63 and the first storage rotating body 62, and the second bevel gear 65 meshes with the first bevel gear 61.

[0052] External paint is pumped into the telescopic material pipe 6 and then flows into the storage rotating body 62. Part of the paint is sprayed directly from the atomizing nozzle 621 on the storage rotating body 62, while the other part flows into the storage rotating body 63 and is sprayed from the atomizing nozzle 64 on the storage rotating body 63.

[0053] Both the first storage rotating body 62 and the second storage rotating body 63 are equipped with rotating plates 622. Pressurized paint impacts the rotating plates 622, causing the corresponding rotating body to rotate. When high-pressure paint enters the first storage rotating body 62, the paint impacts the rotating plates 622 inside the first storage rotating body 62, pushing the first storage rotating body 62 to rotate around the axis of the telescopic material tube 6. At this time, the second atomizing nozzle 621 on the first storage rotating body 62 moves in a circular motion, performing annular spraying on the inner wall of the paint spraying tube 7. Simultaneously, the paint flowing into the second storage rotating body 63 impacts the rotating deflector 622 inside the second storage rotating body 63, causing the second storage rotating body 63 to rotate. Since the second storage rotating body 63 is connected to the first storage rotating body 62 through the meshing of the second bevel gear 65 and the first bevel gear 61, the rotation of the first storage rotating body 62 will drive the second bevel gear 65 to rotate around the first bevel gear 61. Thus, while the second storage rotating body 63 rotates around the axis of the telescopic tube 6, it will also rotate around the connecting axis with the first storage rotating body 62, achieving multi-dimensional rotation. This multi-dimensional rotation method allows the atomizing nozzle 64 to cover more areas of the inner wall of the tube 7 to be painted. Combined with the annular spraying of the second atomizing nozzle 621, it achieves comprehensive and uniform painting of the inner wall of the tube 7 to be painted, without any dead corners.

[0054] In actual operation, the pipe 7 to be painted is first hoisted onto the support roller 72 of the lifting top support mechanism by an external hoisting mechanism. Since the outer diameter of the two ends of the support roller 72 is larger than the outer diameter in the middle, the pipe 7 to be painted will naturally and stably fall into the middle position of the support roller 72. Then, the cylinder 10 is activated, and its output end retracts, causing the movable clamps 81 on both sides to close. The arc-shaped limiting plate 83 fits against the outer wall of the pipe 7 to be painted, and the limiting roller 84 provides auxiliary limiting from the upper and lower sides, thus completing the clamping and holding of the pipe 7 to be painted and preventing it from shaking or shifting during the painting process.

[0055] During the exterior wall painting operation, the pump 51 and fan 52 on the operating box 5 are started. The pump 51 draws in the external paint through the suction pipe, and then distributes it through the paint pipe 511 and the tee connector to the two spraying ring pipes 512 on the inner wall of the moving sleeve 4. The paint is atomized and sprayed out from the atomizing nozzle 513, evenly covering the outer wall of the pipe 7 to be painted. At the same time, the fan 52 draws in external air into the Y-shaped air duct 521, and sends it through two branches into the guide ring 522. The air is then sprayed out at high speed from the inclined air outlet. The airflow is directed at the spraying area of ​​the atomizing nozzle 513, accelerating the evaporation of the paint solvent and allowing the paint layer to initially cure before the travel wheel 41 arrives. Then, the travel wheel 41 is activated, driving the moving sleeve 4 and the travel box 5 to move along the transition cylinder 3 towards the pipe 7 to be painted. When the travel box 5 approaches a certain lifting support mechanism, the hydraulic cylinder 11 of that mechanism retracts in advance, the movable support leg 71 spreads out through the bottom rollers, and the support roller 72 lowers in height to reserve space for the travel box 5 to pass through. After the travel box 5 passes, the hydraulic cylinder 11 extends, and the support roller 72 supports the pipe 7 to be painted again. This cycle continues until the travel box 5 moves from the pipe 7 to the other side of the transition cylinder 3, completing the outer wall painting.

[0056] The inner wall painting can be carried out simultaneously with or separately from the outer wall painting. During operation, an external force device is activated to move the telescopic material tube 6. The telescopic material tube 6 extends into the tube 7 to be painted, and its outer wall's travel wheel 67 rolls along the inner wall of the tube 7, providing support and reducing movement resistance. An external pump unit delivers paint to the telescopic material tube 6, which flows into the storage rotating body 62. The high-pressure paint impacts the rotating plate 622 inside the storage rotating body 62, pushing it to rotate around the axis of the telescopic material tube 6. The atomizing nozzle 621 follows this rotation, performing annular spraying on the inner wall of the tube 7. Some paint flows into the second storage rotating body 63, impacting its internal rotating deflector 622 and causing it to rotate. Simultaneously, the rotation of the first storage rotating body 62 drives the second bevel gear 65 to rotate around the first bevel gear 61, causing the second storage rotating body 63 to rotate around the axis of the telescopic tube 6 while simultaneously rotating around its connecting shaft, achieving multi-dimensional rotation. The third atomizing nozzle 64 then covers more of the inner wall area. As the telescopic tube 6 continues to extend, the multi-dimensional rotating spraying mechanism gradually completes the comprehensive and uniform spraying of the inner wall of the tube 7 to be painted.

[0057] After the painting is completed, first turn off the pump 51 and the fan 52 to stop the paint delivery and airflow supply; then start the cylinder 10, its output end extends, driving the lifting rod 82 to lower, and the movable clamp 81 unfolds outward and rests on the grid frame 9; then start the hydraulic cylinder 11 to retract, the support roller 72 lowers in height, and finally the painted pipe 7 is lifted off the device by the external hoisting mechanism, completing the entire painting process.

[0058] In this implementation, different types of drive methods can be selected according to the actual working conditions to adapt to different weights of paint pipes and different moving speed requirements.

[0059] For example, when the diameter of the pipe to be painted is large and the weight is heavy, a motor wheel with a higher power can be selected as the first and second travel wheels to ensure that the running box and the telescopic pipe can move stably; if the accuracy of movement is required to be high, an electric roller driven by a servo motor can be used to achieve precise position control.

[0060] Based on the above embodiments, all actuators of this device, such as hydraulic cylinders, air cylinders, pumps, and fans, are centrally controlled through a PLC control system. Operators only need to set the painting parameters on the control panel, such as paint flow rate, fan speed, and the speed of the moving box. The device can then automatically complete the entire painting process according to a preset program, greatly reducing manual labor intensity and improving painting efficiency and consistency. Simultaneously, the PLC system also has a fault alarm function. When the device experiences faults such as abnormal hydraulic cylinder pressure, cylinder jamming, or insufficient pump flow, the system will promptly issue an alarm and display the fault location, facilitating quick troubleshooting and handling by operators and ensuring stable operation of the device.

[0061] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A mobile spray painting device for architectural metal profiles, characterized in that, The device includes two opposing supports with a sliding track between them. A transition cylinder is fixedly installed on the opposite sides of the two supports. A running box for external wall painting is fitted onto one of the transition cylinders. A pipe to be painted is located between the two supports. The pipe to be painted is supported by multiple lifting support mechanisms. The specifications of the transition cylinder are the same as those of the pipe to be painted. The running box can move through the pipe to be painted to the other transition cylinder. A telescopic material tube is installed inside one of the supports. A multi-dimensional rotating spraying mechanism is installed at the end of the telescopic material tube. The multi-dimensional rotating spraying mechanism can extend into the pipe to be painted following the telescopic material tube.

2. The mobile spray painting device for architectural metal profiles according to claim 1, characterized in that, The lifting support mechanism includes movable legs hinged on both sides, with a support roller between the movable legs. The support roller has connecting rings on both sides, which are connected to a hydraulic cylinder below. The bottom of the movable legs is equipped with rollers adapted to the sliding track. After the hydraulic cylinder is in operation, it can adjust the height of the support roller. After the hydraulic cylinder is retracted, the distance between the paint spray pipe and the support roller increases, leaving space for the running box to pass through.

3. The mobile spray painting device for architectural metal profiles according to claim 1, characterized in that, Between the two supports, there is also a guard frame and multiple sets of clamping mechanisms. The clamping mechanism includes movable clamps that swing on both sides. The two movable clamps are hinged together by a lifting rod. The lifting rod is connected to the output end of the cylinder. The end of the movable clamp is provided with an arc-shaped limiting plate. The upper and lower sides of the arc-shaped limiting plate are provided with limiting rollers. When the output end of the cylinder extends, the two movable clamps unfold outward. When the output end of the cylinder retracts, the two movable clamps close together to clamp the pipe to be painted.

4. The mobile spray painting device for architectural metal profiles according to claim 3, characterized in that, The movable clamp is located between the two guardrails and falls onto the guardrails when it is deployed.

5. The mobile spray painting device for architectural metal profiles according to any one of claims 1-4, characterized in that, The running box also includes a movable sleeve fitted on the transition cylinder. Multiple guide wheels are evenly arranged on the inner walls of both ends of the movable sleeve. After the guide wheels are in operation, the running box and the movable sleeve move together toward the pipe to be painted.

6. The mobile painting device for architectural metal profiles according to claim 5, characterized in that, The surface of the operating box is equipped with a pump and a fan. The paint pipe of the pump extends into the operating box. The inner wall of the moving sleeve is symmetrically provided with two spraying ring pipes. The paint pipe is connected to the two spraying ring pipes through a tee connector. Multiple atomizing nozzles are provided in the inner ring of the spraying ring pipe.

7. The mobile spray painting device for architectural metal profiles according to claim 6, characterized in that, Both of the spraying rings are equipped with fixed guide rings on their exteriors. The operating box is equipped with a Y-shaped air duct. One end of the air duct is connected to a fan. The two branches of the air duct are respectively connected to the corresponding guide rings. The inner ring of the guide ring is equipped with an air outlet slot.

8. The mobile spray painting device for architectural metal profiles according to claim 1, characterized in that, The outer wall of the telescopic tube is provided with a limiting plate, and the circumference of the limiting plate is provided with multiple travel wheels. When the inner wall is painted, the travel wheels are always in contact with the inner wall of the tube to be painted.

9. The mobile spray painting device for architectural metal profiles according to claim 8, characterized in that, The multidimensional rotary spraying mechanism includes a first bevel gear, a first material storage rotating body, a second material storage rotating body, and a second bevel gear. The first bevel gear and the first material storage rotating body are rotatably connected to the telescopic material tube via bearings. The first material storage rotating body is connected to the telescopic material tube, and the second material storage rotating body is connected to the first material storage rotating body. The second material storage rotating body is rotatably connected to the first material storage rotating body. A second bevel gear is provided at the connection between the second material storage rotating body and the first material storage rotating body, and the second bevel gear meshes with the first bevel gear.

10. The mobile spray painting device for architectural metal profiles according to claim 9, characterized in that, Both the first and second storage rotating bodies are equipped with rotating plates. When the pressure of the paint impacts the rotating plates, the corresponding rotating bodies rotate. The first storage rotating body is equipped with an atomizing nozzle 2, and the second storage rotating body is equipped with an atomizing nozzle 3.

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