A surface spraying device for the production of fireproof metal composite panels

Abstract

The present invention discloses a surface spraying device for the production of fireproof metal composite plates. The present invention relates to the technical field of surface spraying of fireproof metal composite plates and includes a control vehicle. A pressure booster and a placement rack are installed on the side wall of the control vehicle, and a storage cylinder is placed on the control vehicle. The advantages of the present invention are as follows: when the spray gun body is too close, the impact force of the fireproof coating can be reduced, the splashing problem can be alleviated, and at the same time, a short-haired roller is used to assist in leveling the coating. When the spray gun body is too far away, the kinetic energy of the atomized particles can be enhanced to compensate for the kinetic energy loss caused by the excessive distance. Even when the spray gun body is out of the optimal spraying range, the device can be adaptively adjusted to ensure the spraying quality. This not only avoids the waste of spraying raw materials, but also eliminates the need to clean the fireproof metal composite plates, ensuring the spraying efficiency. At the same time, there is no need for manual adjustment, which simplifies the operation, eliminates the need for repeated testing, and avoids the error of knob rotation, further reducing the professionalism requirements for workers.

Description

Technical Field

[0001] The present invention relates to the technical field of surface spraying of fireproof metal composite boards, and particularly to a surface spraying device for the production of fireproof metal composite boards. Background Art

[0002] During the surface spraying process in the production of fireproof metal composite boards, it is necessary to combine metal substrate treatment and fireproof coating construction techniques. The specific process includes surface pretreatment of the substrate, primer coating, fireproof coating spraying, curing and post-treatment, and quality inspection. During the process of fireproof coating spraying, attention should be paid to the operation of the spray gun. Specifically: the spray gun needs to be perpendicular to the surface of the substrate, keep a distance of 350 - 600 mm, the air pressure is stable at 0.4 - 0.6 MPa, the nozzle diameter is 6 - 10 mm, and at the same time, it needs to move at a constant speed to avoid staying, which may cause paint accumulation or sagging; special attention should be paid to the operation of the above spray gun, especially the control of the spray gun distance. If the spray gun is too close, when < 350 mm, the kinetic energy of the paint is overloaded, resulting in splash rebound, and it is easy to produce orange peel or bubbles on the surface of the coating. At the same time, high-viscosity paints (such as anti-corrosion paints) are prone to accumulate due to excessive impact force, and the coverage in the edge area is uneven; if the spray gun is too far, that is, > 600 mm, the kinetic energy of the paint atomization particles decays, and the overspray amount increases by 15% - 25%, resulting in a rough surface of the coating (dry spraying phenomenon). At the same time, low-viscosity paints (such as water-based paints) are severely lost due to dispersion, and the adhesion is significantly reduced.

[0003] After retrieval, Chinese Patent Application CN221982825U discloses a surface spraying device for the production of fireproof metal composite boards. Although it improves the spraying efficiency of raw materials and reduces the working difficulty of users, there is no requirement for the control of the spray gun distance, and the above problems are likely to occur. Especially for handheld spray guns, if the operation is accidentally too close or too far, the spraying device cannot autonomously complete adaptive adjustment to ensure the spraying quality. This not only wastes spraying raw materials but also requires cleaning the fireproof metal composite board, affecting the spraying efficiency. At the same time, during manual operation, it is necessary to constantly judge the distance between the spray guns, which requires too high a level of workers, increasing the labor cost. Moreover, in special spraying occasions, when spraying too close or too far, the manual self-adjustment steps are too complex and require repeated testing. At the same time, the rotation of the knob is also prone to errors, further increasing the professionalism requirements for workers. Summary of the Invention

[0004] The purpose of the present invention is to provide a surface spraying device for the production of fireproof metal composite boards.

[0005] In order to solve the problems raised in the above-mentioned background technology, the present invention provides the following technical solutions: a surface spraying device for the production of fireproof metal composite panels, comprising a material storage barrel, one end of a material delivery pipe is fixedly connected to the output end of the material storage barrel, the other end of the material delivery pipe is fixedly connected to a paint pipe joint, the end of the paint pipe joint is fixedly connected to a spray gun body, the bottom end of the spray gun body is provided with an air inlet and a main flow channel, the air inlet is connected to the main flow channel, the end of the main flow channel extends to the muzzle of the spray gun body, and the end of the main flow channel is connected to an air cap, the air cap is hinged to the spray gun body, an air pipe joint and a one-way valve are installed at the entrance of the air inlet, the bottom end of the main flow channel is fixedly sleeved with a first fixing ring, and the spray gun body A laser ranging sensor is installed on the top surface of the gun body, a fixing fixture and a fixing frame are fixedly connected to the bottom surface of the spray gun body, a motor is installed on the fixing fixture, a transmission shaft is fixedly connected to the output end of the motor, a moving gear is sleeved on the outer surface of the transmission shaft, a slip ring is slidably connected to the end surface of the moving gear, an electric push rod is fixedly connected between the slip ring and the motor, a gear ring is meshedly connected to the outer surface of the moving gear, a connecting frame is fixedly connected to the end surface of the gear ring, a driven gear is fixedly connected to one end of the connecting frame, a worm is fixedly connected to the other end of the connecting frame, and a worm gear is meshedly connected to the outer surface of the worm gear, a clamping strip is fixedly connected to the inner surface of the worm gear, and a positioning ring is embeddedly connected to the outer surface of the clamping strip;

[0006] A push rod is meshed and sleeved on the central axis of the first fixed ring, and the push rod is meshed and sleeved with a positioning ring. A rotating block is fixedly connected to one end of the push rod, and a plug is fixedly connected to the other end of the push rod. A groove is provided on the outer surface of the push rod, and a second fixed ring is fixedly connected to the inner surface of the main channel, and a retaining ring is fixedly connected to the inner surface of the second fixed ring. A pull rod is sleeved inside the push rod, and one end of a hinged rod is hinged to the top end of the pull rod, and a stopper is hinged to the other end of the hinged rod.

[0007] As a further solution of the present invention: a control vehicle is fixedly connected to the bottom surface of the material storage barrel, a pressurizer and a placement rack are installed on the side wall of the control vehicle, an air pipe is connected between the pressurizer and the air pipe joint, the spray gun body is sleeved with the placement rack, a spray amount adjustment knob and a pattern adjustment knob are installed on the spray gun body, the pattern adjustment knob adjusts the angle of the air cap, a controller is installed on the control vehicle, the controller is electrically connected to the laser ranging sensor, the motor and the electric push rod are both electrically connected to the controller, and both ends of the worm are rotatably connected to the fixed frame.

[0008] As a further solution of the present invention: the transmission shaft is arranged in a polygonal column shape, the moving gear is meshedly connected with the driven gear, and the worm gear and the positioning ring are both rotatably sleeved with the first fixed ring.

[0009] As a further solution of the present invention: the ejector rod penetrates through the second fixing ring, the plug block can block the main flow channel, the pull rod penetrates through the rotating block, there are two retaining rings, when the blocking block is located between the two retaining rings, the gas pressure ejected from the air cap is 0.3 - 0.4 MPa, and when the blocking block is located below the two retaining rings, the gas pressure ejected from the air cap is 0.5 - 25 MPa.

[0010] As a further solution of the present invention: the blocking block is triangularly arranged, and one corner of the blocking block is rotatably connected to the groove, and the blocking block cooperates with the retaining ring to block the movement of the ejector rod.

[0011] As a further solution of the present invention: a paint flow channel is provided at the muzzle of the spray gun body, the paint flow channel is communicated with the paint pipe joint, a bracket is fixedly connected to the inner surface of the main flow channel, one end of a propeller is rotatably connected to the side wall of the bracket, the other end of the propeller is fixedly connected to a first nozzle, a second nozzle is slidably connected to the side wall of the first nozzle, an adapter rod is fixedly connected to the outer surface of the muzzle of the spray gun body, a telescopic frame is slidably sleeved on the adapter rod, and a short hair roller is rotatably connected to the telescopic frame.

[0012] As a further solution of the present invention: the second nozzle is fixedly connected to the spray gun body, the first nozzle is slidably sleeved on the spray gun body, the pore diameter of the first nozzle is 6 mm, and the pore diameter of the second nozzle is 8 mm.

[0013] As a further solution of the present invention: the propeller extends into the paint flow channel, and a torsion spring is fixedly connected between the propeller and the bracket, and a return spring is fixedly connected between the telescopic frame and the adapter rod.

[0014] Adopting the above technical solution: compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] In the present invention, the motor drives the transmission shaft to rotate, so that the moving gear on the transmission shaft drives the driven gear to rotate in the reverse direction, and then the connecting frame rotates in the reverse direction. According to the above principle, the ejector rod descends until the blocking block on the ejector rod descends to the bottom end of the second fixing ring. At this time, the gas pressure ejected from the spray gun body is 25 MPa, which increases the air pressure and enhances the kinetic energy of the atomized particles to compensate for the kinetic energy loss caused by the excessive distance. To sum up, when the spray gun body is too close, the impact force of the fireproof paint can be reduced, the splashing problem can be alleviated, and at the same time, the short hair roller is used to assist in leveling the coating. When the spray gun body is too far, the kinetic energy of the atomized particles can be enhanced to compensate for the kinetic energy loss caused by the excessive distance. Even when the spray gun body is out of the optimal spraying range, the device can be adaptively adjusted to ensure the spraying quality, not only avoiding the waste of spraying raw materials, but also eliminating the need to clean the fireproof metal composite board, thus ensuring the spraying efficiency.

[0016] The adjustment of the spray gun body of the present invention can be automatically completed. When spraying in special occasions, that is, when spraying too close or too far, manual adjustment is not required, which simplifies the operation, eliminates the need for repeated testing, and at the same time avoids errors in the rotation of the knob, further reducing the professionalism requirements for workers.

[0017] The present invention sends the measurement data to the controller on the control vehicle through a laser distance sensor. The controller starts the motor on the fixed tooling according to the data, so that the motor drives the moving gear to rotate self - identically through the transmission shaft, thereby making the moving gear drive the toothed ring to rotate in the same direction, indirectly making the spraying pressure of the spray gun body meet the spraying requirements. There is no need for workers to constantly judge the distance of the spray gun, the requirements for workers are relatively low, and the labor cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of a surface spraying device for the production of a fire - resistant metal composite board according to the present invention;

[0019] Figure 2 is a schematic diagram of the structure of the feed pipe in an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of the structure of the connecting rod in an embodiment of the present invention;

[0021] Figure 4 is a schematic cross - sectional view of the structure of the spray gun body in an embodiment of the present invention;

[0022] Figure 5 is in an embodiment of the present invention Figure 4 is an enlarged view of the structure of part A;

[0023] Figure 6 is in an embodiment of the present invention Figure 4 is an enlarged view of the structure of part B;

[0024] Figure 7 is a schematic diagram of the structure of the toothed ring in an embodiment of the present invention;

[0025] Figure 8 is a schematic semi - sectional view of the structure of the second fixed ring in an embodiment of the present invention;

[0026] Figure 9 is in an embodiment of the present invention Figure 8 is an enlarged view of the structure of part C.

[0027] In the figure: 1, control vehicle; 2, pressure booster; 3, placement rack; 4, storage cylinder; 5, material conveying pipe; 6, coating pipe joint; 7, spray gun body; 8, air inlet passage; 9, main flow passage; 10, air cap; 11, air pipe joint; 12, first fixing ring; 13, spraying amount adjustment knob; 14, pattern adjustment knob; 15, laser distance measuring sensor; 16, coating flow passage; 17, fixing tooling; 18, fixing rack; 19, motor; 20, transmission shaft; 21, moving gear; 22, slip ring; 23, electric push rod; 24, toothed ring; 25, connecting frame; 26, driven gear; 27, worm; 28, worm gear; 29, clamping strip; 30, positioning ring; 31, ejector rod; 32, rotating block; 33, plug block; 34, second fixing ring; 35, retaining ring; 36, pull rod; 37, groove; 38, articulated rod; 39, stop block; 40, support; 41, propeller; 44, first nozzle; 45, second nozzle; 46, connecting rod; 47, telescopic frame; 48, short hair roller. Specific embodiments

[0028] The following further describes the specific embodiments of the present invention with reference to the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation on the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Example 1: Please refer to Figures 1 - 5 and Figure 7, the present invention provides a technical solution: a surface spraying device for the production of fireproof metal composite plates, including a control vehicle (1). A pressure booster (2) and a placement rack (3) are installed on the side wall of the control vehicle (1). A storage barrel 4 is placed on the control vehicle (1). One end of a feeding pipe 5 is fixedly connected to the output end of the storage barrel 4. The other end of the feeding pipe 5 is fixedly connected to a coating pipe joint 6. The end of the coating pipe joint 6 is fixedly connected to a spray gun body 7. A spraying amount adjustment knob (13) and a pattern adjustment knob (14) are installed on the spray gun body (7). An air inlet channel 8 and a main flow channel 9 are opened at the bottom end of the spray gun body 7. The air inlet channel 8 communicates with the main flow channel 9. The end of the main flow channel 9 extends to the muzzle of the spray gun body 7, and the end of the main flow channel 9 is communicated with an air cap 10. The air cap 10 is hinged to the spray gun body 7. An air pipe joint 11 and a one-way valve are installed at the inlet of the air inlet channel 8. A first fixing ring 12 is fixedly sleeved at the bottom end of the main flow channel 9. A laser distance sensor 15 is installed on the top surface of the spray gun body 7. A fixing tooling 17 and a fixing frame 18 are fixedly connected to the bottom surface of the spray gun body 7. A motor 19 is installed on the fixing tooling 17. A transmission shaft 20 is fixedly connected to the output end of the motor 19. A moving gear 21 is sleeved on the outer surface of the transmission shaft 20. A sliding ring 22 is slidably connected to the end surface of the moving gear 21. An electric push rod 23 is fixedly connected between the sliding ring 22 and the motor 19. The outer surface of the moving gear 21 is meshed with a toothed ring 24. A connecting frame 25 is fixedly connected to the end surface of the toothed ring 24. One end of the connecting frame 25 is fixedly connected to a driven gear 26. The other end of the connecting frame 25 is fixedly connected to a worm 27. Both ends of the worm (27) are rotatably connected to the fixing frame (18), and the outer surface of the worm 27 is meshed with a worm gear 28. A clamping strip 29 is fixedly connected to the inner surface of the worm gear 28. A positioning ring 30 is fitted on the outer surface of the clamping strip 29.

[0030] Please refer to Figure 1 , the bottom surface of the storage barrel 4 is fixedly connected to the control vehicle 1. A pressure booster 2 and a placement rack 3 are installed on the side wall of the control vehicle 1. An air delivery pipe is connected between the pressure booster 2 and the air pipe joint 11. The spray gun body 7 is sleeved with the placement rack 3. A spraying amount adjustment knob 13 and a pattern adjustment knob 14 are installed on the spray gun body 7. The pattern adjustment knob 14 adjusts the angle of the air cap 10. A controller is installed on the control vehicle 1. The controller is electrically connected to the laser distance sensor 15. Both the motor 19 and the electric push rod 23 are electrically connected to the controller. Both ends of the worm 27 are rotatably connected to the fixing frame 18.

[0031] Please refer to Figure 7 and Figure 8 , the transmission shaft 20 is arranged in a multi-prismatic shape. The moving gear 21 is meshed with the driven gear 26. Both the worm gear 28 and the positioning ring 30 are rotatably sleeved on the first fixing ring 12.

[0032] Specifically, during the process of the spray gun body 7 moving out of the optimal spraying range, when the distance between the spray gun body 7 and the spraying surface is < 350 mm, the laser distance sensor 15 sends the measurement data to the controller on the control vehicle 1. The controller starts the motor 19 on the fixed tooling 17 according to the data, so that the motor 19 drives the moving gear 21 to rotate self - clockwise through the transmission shaft 20, thereby causing the moving gear 21 to drive the tooth ring 24 to rotate in the same direction, making the connecting frame 25 on the tooth ring 24 drive the worm 27 to rotate, and further causing the worm 27 to drive the worm wheel 28 to rotate self - clockwise. The worm wheel 28 drives the positioning ring 30 to rotate through the clamping strip 29. Since the ejector rod 31 is meshed and sleeved with the positioning ring 30 and simultaneously meshed and sleeved with the first fixed ring 12, the rotation of the positioning ring 30 can drive the ejector rod 31 to rotate, causing the ejector rod 31 to rise until the stop block 39 on the ejector rod 31 moves between the two stop rings 35. At this time, the gas pressure sprayed by the spray gun body 7 is 0.3 - 0.4 MPa, causing the air pressure to drop, reducing the impact force of the fire - proof coating and alleviating the splashing problem. At the same time, the air pressure in the main flow channel 9 drops, reducing the force that the gas in the main flow channel 9 pushes the propeller 41 to rotate, making the propeller 41 unable to rotate driven by the torsion spring. As a result, the first nozzle 44 on the propeller 41 coincides with the second nozzle 45, and the 6 - mm orifice of the first nozzle 44 replaces the 8 - mm orifice of the second nozzle 45, further dispersing the high - pressure impact energy. At the same time, when the distance between the spray gun body 7 and the spraying surface is < 350 mm, the short - hair roller 48 on the telescopic frame 47 contacts the spraying surface, making the short - hair roller 48 level the fire - proof coating after spraying. When the distance between the spray gun body 7 and the spraying surface is > 600 mm, the laser distance sensor 15 sends the measurement data to the controller on the control vehicle 1. The controller first starts the electric push rod 23 and then starts the motor 19, causing the electric push rod 23 to contract and drive the slip ring 22 to translate. Since the slip ring 22 is slidably connected to the moving gear 21, the slip ring 22 drives the moving gear 21 to translate until the moving gear 21 is completely meshed and connected with the driven gear 26. At this time, the started motor 19 drives the transmission shaft 20 to rotate, making the moving gear 21 on the transmission shaft 20 drive the driven gear 26 to rotate in the reverse direction, and then causing the connecting frame 25 to rotate in reverse. According to the above principle, the ejector rod 31 descends until the stop block 39 on the ejector rod 31 descends to the bottom end of the second fixed ring 34. At this time, the gas pressure sprayed by the spray gun body 7 is 25 MPa, causing the air pressure to rise, enhancing the kinetic energy of the atomized particles and compensating for the kinetic energy loss caused by the excessive distance. In summary, when the spray gun body 7 is too close, it can reduce the impact force of the fire - proof coating and alleviate the splashing problem, and at the same time cooperate with the short - hair roller 48 to assist in leveling the coating. When the spray gun body 7 is too far, it can enhance the kinetic energy of the atomized particles and compensate for the kinetic energy loss caused by the excessive distance. Even when the spray gun body 7 moves out of the optimal spraying range, the device can be adaptively adjusted to ensure the spraying quality, not only avoiding the waste of spraying raw materials, but also eliminating the need to clean the fire - proof metal composite board, ensuring the spraying efficiency.

[0033] Example 2: Please refer toFigure 5 , Figure 8 and Figure 9 , the present invention provides a technical solution: a surface spraying device for the production of fireproof metal composite plates. A top rod 31 is meshingly sleeved on the central axis of a first fixing ring 12. The top rod 31 is meshingly sleeved with a positioning ring 30. One end of the top rod 31 is fixedly connected with a rotating block 32, and the other end of the top rod 31 is fixedly connected with a plug block 33. A groove 37 is formed on the outer surface of the top rod 31. A second fixing ring 34 is fixedly connected to the inner surface of the main flow channel 9. A retaining ring 35 is fixedly connected to the inner surface of the second fixing ring 34. A pull rod 36 is sleeved inside the top rod 31. The top end of the pull rod 36 is hinged to one end of a hinge rod 38, and the other end of the hinge rod 38 is hinged to a stop block 39.

[0034] Please refer to Figure 4 and Figure 8 , the top rod 31 penetrates through the second fixing ring 34. The plug block 33 can block the main flow channel 9. The pull rod 36 penetrates through the rotating block 32. There are two retaining rings 35. When the stop block 39 is located between the two retaining rings 35, the gas pressure ejected from the air cap 10 is 0.3 - 0.4 MPa. When the stop block 39 is located below the two retaining rings 35, the gas pressure ejected from the air cap 10 is 0.5 - 25 MPa.

[0035] Please refer to Figure 9 , the stop block 39 is triangularly arranged, and one corner of the stop block 39 is rotatably connected to the groove 37. The stop block 39 cooperates with the retaining ring 35 to block the movement of the top rod 31.

[0036] Specifically, during the transmission of the motor 19, the adjustment of the spray gun body 7 can be automatically completed. When spraying in special occasions, that is, when spraying too close or too far, there is no need for manual adjustment, which simplifies the operation, eliminates the need for repeated testing, and at the same time avoids errors in the rotation of the knob, further reducing the professionalism requirements for workers.

[0037] Example 3: Please refer to Figures 2 - 4 and Figure 6 , the present invention provides a technical solution: a surface spraying device for the production of fireproof metal composite plates. A paint flow channel 16 is formed at the muzzle of the spray gun body 7. The paint flow channel 16 is communicated with a paint pipe joint 6. A bracket 40 is fixedly connected to the inner surface of the main flow channel 9. One end of a propeller 41 is rotatably connected to the side wall of the bracket 40. The other end of the propeller 41 is fixedly connected with a first nozzle 44. A second nozzle 45 is slidably connected to the side wall of the first nozzle 44. An adapter rod 46 is fixedly connected to the outer surface of the muzzle of the spray gun body 7. A telescopic frame 47 is slidably sleeved on the adapter rod 46. A short hair roller 48 is rotatably connected to the telescopic frame 47.

[0038] Please refer to Figure 6, the second nozzle 45 is fixedly connected to the spray gun body 7, the first nozzle 44 is slidably sleeved on the spray gun body 7, the pore diameter of the first nozzle 44 is 6 mm, and the pore diameter of the second nozzle 45 is 8 mm.

[0039] Please refer to Figure 3 and Figure 6 , the propeller 41 extends into the paint flow channel 16, and a torsion spring is fixedly connected between the propeller 41 and the bracket 40, and a return spring is fixedly connected between the telescopic frame 47 and the connecting rod 46.

[0040] Specifically, during the spraying process, through the real-time distance measurement of the laser distance sensor 15 and the flexible adjustment of the spray gun body 7, there is no need for manual judgment of the distance between the spray guns at all times, the requirements for workers are relatively low, and the labor cost is reduced.

[0041] The working principle and usage process of the present invention: When fireproof paint needs to be sprayed, place the fireproof paint in the storage cylinder 4, and rotate the spraying amount adjustment knob 13 to close the paint flow channel 16 to prevent the fireproof paint from spraying out of the spray gun body 7. At this time, pull down the pull rod 36, so that the pull rod 36 drives the block 39 to rotate through the hinge rod 38, so that the block 39 contracts into the groove 37 to prevent the retaining ring 35 in the second fixing ring 34 from blocking the movement of the block 39 and the ejector rod 31. At this time, rotate the rotating block 32 so that the ejector rod 31 on the rotating block 32 rotates self-rotationally, and the ejector rod 31 is meshed and sleeved with the first fixing ring 12. At the same time, the worm gear 28 is fixed due to the self-locking property of the worm 27, so that the positioning ring 30 cannot rotate. Therefore, when the ejector rod 31 rotates self-rotationally, it will rise or fall, so that the plug 33 at the top of the ejector rod 31 rises or falls, thereby adjusting the air flow rate in the main flow channel 9 and indirectly adjusting the pressure of the air cap 10 until the pressure meets the spraying of the spray gun at a distance of 350 mm to 600 mm. Then place the metal composite plate flat, and at this time, rotate the spraying amount adjustment knob 13 and the pattern adjustment knob 14 to complete the adjustment of the best spraying effect, and spray the metal composite plate to form a fireproof metal composite plate;

[0042] During the above process, the laser distance sensor 15 always measures the distance between the spray gun body 7 and the spraying surface. When the distance between the spray gun body 7 and the spraying surface is < 350 mm, the laser distance sensor 15 sends the measurement data to the controller on the control vehicle 1. The controller starts the motor 19 on the fixed tooling 17 according to the data, so that the motor 19 drives the moving gear 21 to rotate self - clockwise through the transmission shaft 20, thereby causing the moving gear 21 to drive the tooth ring 24 to rotate in the same direction, causing the connecting frame 25 on the tooth ring 24 to drive the worm 27 to rotate, and further causing the worm 27 to drive the worm wheel 28 to rotate self - clockwise. The worm wheel 28 drives the positioning ring 30 to rotate through the clamping strip 29. Since the ejector rod 31 is meshed and sleeved with the positioning ring 30 and at the same time the ejector rod 31 is meshed and sleeved with the first fixed ring 12, the rotation of the positioning ring 30 can drive the ejector rod 31 to rotate, causing the ejector rod 31 to rise until the stop block 39 on the ejector rod 31 moves between the two stop rings 35, so that the gas pressure ejected from the spray gun body 7 at this time is 0.3 - 0.4 MPa, causing the air pressure to drop, reducing the impact force of the fire - proof coating and alleviating the splashing problem. At the same time, the air pressure in the main flow channel 9 drops, causing the force of the gas in the main flow channel 9 to push the propeller 41 to rotate to decrease, so that the propeller 41 cannot rotate under the drive of the torsion spring, thereby causing the first nozzle 44 on the propeller 41 to coincide with the second nozzle 45, and the 6 - mm orifice of the first nozzle 44 replaces the 8 - mm orifice of the second nozzle 45 to further disperse the high - pressure impact energy. At the same time, when the distance between the spray gun body 7 and the spraying surface is < 350 mm, the short - haired roller 48 on the telescopic frame 47 contacts the spraying surface, and the short - haired roller 48 levels the fire - proof coating after spraying;

[0043] When the distance between the spray gun body 7 and the spraying surface > 600 mm, the laser distance sensor 15 sends the measurement data to the controller on the control vehicle 1. The controller first starts the electric push rod 23 according to the data, and then starts the motor 19, causing the electric push rod 23 to contract and driving the slip ring 22 to translate. Since the slip ring 22 is slidably connected to the moving gear 21, the slip ring 22 drives the moving gear 21 to translate until the moving gear 21 is completely meshed with the driven gear 26. At this time, the started motor 19 drives the transmission shaft 20 to rotate, causing the moving gear 21 on the transmission shaft 20 to drive the driven gear 26 to rotate in the reverse direction, and then causing the connecting frame 25 to rotate in the reverse direction. According to the above principle, the ejector rod 31 descends until the stopper 39 on the ejector rod 31 descends to the bottom end of the second fixed ring 34. At this time, the gas pressure ejected by the spray gun body 7 is 25 MPa, causing the air pressure to increase, enhancing the kinetic energy of the atomized particles, and compensating for the kinetic energy loss caused by the too long distance. To sum up, when the spray gun body 7 is too close, the impact force of the fireproof coating can be reduced, the splashing problem can be alleviated, and at the same time, the short-haired roller 48 is used to assist in leveling the coating. When the spray gun body 7 is too far, the kinetic energy of the atomized particles can be enhanced, and the kinetic energy loss caused by the too long distance can be compensated. Even when the spray gun body 7 is out of the optimal spraying range, the device can be adjusted adaptively to ensure the spraying quality, not only avoiding the waste of spraying raw materials, but also eliminating the need to clean the fireproof metal composite board, ensuring the spraying efficiency;

[0044] During the above process, through the real-time distance measurement of the laser distance sensor 15 and the flexible adjustment of the spray gun body 7, there is no need for manual judgment of the distance between the spray guns at all times, the requirements for workers are relatively low, the labor cost is reduced, and at the same time, the adjustment of the spray gun body 7 can be automatically completed. When spraying in special occasions, that is, when spraying too close or too far, there is no need for manual adjustment, which simplifies the operation, eliminates the need for repeated testing, and at the same time avoids the error of knob rotation, further reducing the professionalism of workers and completing the operation.

[0045] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present invention.

Claims

1. A surface spraying device for producing fireproof metal composite panels, characterized in that: The invention comprises a control vehicle (1), a pressurizer (2) and a placement rack (3) are installed on the side wall of the control vehicle (1), a material storage barrel (4) is placed on the control vehicle (1), one end of a material delivery pipe (5) is fixedly connected to the output end of the material storage barrel (4), the other end of the material delivery pipe (5) is fixedly connected to a paint pipe joint (6), the end of the paint pipe joint (6) is fixedly connected to a spray gun body (7), a spray amount adjustment knob (13) and a pattern adjustment knob (14) are installed on the spray gun body (7), and the bottom end of the spray gun body (7) is fixedly connected to the spray gun body (7). An air inlet (8) and a main flow channel (9) are provided, the air inlet (8) is connected to the main flow channel (9), the end of the main flow channel (9) extends to the muzzle of the spray gun body (7), and the end of the main flow channel (9) is connected to an air cap (10), the air cap (10) is hinged to the spray gun body (7), an air pipe joint (11) and a one-way valve are installed at the entrance of the air inlet (8), a first fixing ring (12) is fixedly sleeved at the bottom end of the main flow channel (9), and a laser distance sensor is installed on the top surface of the spray gun body (7). The spray gun body (15) comprises a fixing fixture (17) and a fixing frame (18) fixedly connected to the bottom surface of the spray gun body (7); a motor (19) is mounted on the fixing fixture (17); a transmission shaft (20) is fixedly connected to the output end of the motor (19); a moving gear (21) is sleeved on the outer surface of the transmission shaft (20); a slip ring (22) is slidably connected to the end surface of the moving gear (21); an electric push rod (23) is fixedly connected between the slip ring (22) and the motor (19); and the outer surface of the moving gear (21) is A gear ring (24) is meshedly connected, a connecting frame (25) is fixedly connected to the end surface of the gear ring (24), one end of the connecting frame (25) is fixedly connected to a driven gear (26), the other end of the connecting frame (25) is fixedly connected to a worm (27), both ends of the worm (27) are rotatably connected to the fixing frame (18), and the outer surface of the worm (27) is meshedly connected to a worm wheel (28), the inner surface of the worm wheel (28) is fixedly connected to a clamping strip (29), and the outer surface of the clamping strip (29) is inlaidly connected to a positioning ring (30); A push rod (31) is meshingly sleeved on the central axis of the first fixing ring (12), the push rod (31) is meshingly sleeved with the positioning ring (30), one end of the push rod (31) is fixedly connected to a rotating block (32), the other end of the push rod (31) is fixedly connected to a plug block (33), and a groove (37) is provided on the outer surface of the push rod (31), the inner surface of the main flow channel (9) is fixedly connected to a second fixing ring (34), the inner surface of the second fixing ring (34) is fixedly connected to a retaining ring (35), a pull rod (36) is sleeved inside the push rod (31), the top end of the pull rod (36) is hinged to one end of a hinged rod (38), and the other end of the hinged rod (38) is hinged to a stopper (39).

2. A surface spraying device for producing fireproof metal composite panels according to claim 1, characterized in that: The bottom surface of the material storage barrel (4) is fixedly connected to a control vehicle (1), and a pressurizer (2) and a placement rack (3) are installed on the side wall of the control vehicle (1). An air supply pipe is connected between the pressurizer (2) and the air pipe joint (11). The spray gun body (7) is sleeved with the placement rack (3). A spray amount adjustment knob (13) and a pattern adjustment knob (14) are installed on the spray gun body (7). The pattern adjustment knob (14) adjusts the angle of the air cap (10). A controller is installed on the control vehicle (1), and the controller is electrically connected to the laser distance sensor (15). The motor (19) and the electric push rod (23) are both electrically connected to the controller. Both ends of the worm gear (27) are rotationally connected to the fixed rack (18).

3. The surface spraying device for producing a fireproof metal composite panel according to claim 1, characterized in that: The transmission shaft (20) is arranged in a polygonal column shape, the moving gear (21) is meshingly connected with the driven gear (26), and the worm gear (28) and the positioning ring (30) are both rotatably sleeved with the first fixing ring (12).

4. The surface spraying device for producing a fireproof metal composite panel according to claim 1, characterized in that: The push rod (31) passes through the second fixing ring (34), the plug (33) can block the main flow channel (9), the pull rod (36) passes through the rotating block (32), and two baffle rings (35) are provided. When the baffle (39) is located between the two baffle rings (35), the pressure of the gas ejected from the air cap (10) is 0.3~0.4MPa, and when the baffle (39) is located below the two baffle rings (35), the pressure of the gas ejected from the air cap (10) is 0.5~25MPa.

5. The surface spraying device for producing fireproof metal composite panels according to claim 1, characterized in that: The stopper (39) is arranged in a triangular shape, and one corner of the stopper (39) is rotatably connected to the groove (37). The stopper (39) cooperates with the stop ring (35) to block the movement of the push rod (31).

6. The surface spraying device for producing fireproof metal composite panels according to claim 1, characterized in that: A paint flow channel (16) is provided at the muzzle of the spray gun body (7), and the paint flow channel (16) is communicated with the paint pipe joint (6). A bracket (40) is fixedly connected to the inner surface of the main flow channel (9), and one end of a propeller (41) is rotatably connected to the side wall of the bracket (40), and a first nozzle (44) is fixedly connected to the other end of the propeller (41), and a second nozzle (45) is slidably connected to the side wall of the first nozzle (44). A connecting rod (46) is fixedly connected to the outer surface of the muzzle of the spray gun body (7), and a telescopic frame (47) is slidably sleeved on the connecting rod (46), and a short-hair roller (48) is rotatably connected to the telescopic frame (47).

7. A surface spraying device for producing fireproof metal composite panels according to claim 6, characterized in that: The second nozzle (45) is fixedly connected to the spray gun body (7), and the first nozzle (44) is slidably sleeved to the spray gun body (7). The hole diameter of the first nozzle (44) is 6 mm, and the hole diameter of the second nozzle (45) is 8 mm.

8. The surface spraying device for producing fireproof metal composite panels according to claim 6, characterized in that: The propeller (41) extends into the coating flow channel (16), and a torsion spring is fixedly connected between the propeller (41) and the bracket (40), and a return spring is fixedly connected between the telescopic frame (47) and the connecting rod (46).

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