High-pressure spraying device and method for iron art guardrail spraying processing

Abstract

The application relates to the field of spraying technology, in particular to a high-pressure spraying device and method for iron art guardrail spraying processing, which comprises a suspension frame and a plurality of hooks arranged in the suspension frame and used for conveying the iron art guardrail, further comprises a paint spraying box used for the iron art guardrail to pass through, and a paint spraying gun arranged in the paint spraying box and used for spraying paint on the iron art guardrail; an air exhaust shell is arranged on one side of the paint spraying box; an electrostatic adsorption assembly is arranged in the paint spraying box and used for controlling paint mist oversprayed by the paint spraying gun; a plurality of side pipes are arranged in the paint spraying box; a negative pressure assembly is arranged on one side of the side pipes and used for recycling the paint mist adsorbed by the electrostatic adsorption assembly; a sleeve shell is arranged on the outer surface of the side pipes and is internally connected with a plurality of jacks extending into the side pipes; and a gradually-narrowing narrowing groove is arranged in the jacks. The pulse electrostatic generator adopts an intermittent power supply mode, realizes an 'adsorption-release' cycle and efficiently captures the paint mist during adsorption.

Description

Technical Field

[0001] This invention relates to the field of spraying technology, specifically to a high-pressure spraying device and method for spraying wrought iron railings. Background Technology

[0002] Wrought iron railings are widely used in construction, municipal works, landscaping, and transportation due to their good mechanical strength, aesthetic appeal, and strong weather resistance. However, in actual use, wrought iron railings are constantly exposed to the outdoors, making them susceptible to corrosion from rain, moisture, ultraviolet radiation, and air pollutants. This can lead to surface rust and paint peeling, severely impacting their lifespan and appearance. Therefore, the application of surface anti-corrosion and decorative coatings is crucial in the production of wrought iron railings, making the spraying process a key step.

[0003] For example, patent document CN219850314U relates to the field of mesh fences and discloses a mesh fence spraying device. This patent document solves the problem that with this spraying method, the material sprayed on the sides of thick fences is sometimes less than that on the front, resulting in uneven spraying of the mesh fence and easy corrosion of the sides. The mesh fence spraying device includes a frame, a spraying machine body set at the front of the frame, a spraying gun head set at the middle and rear of the spraying machine body, and a reciprocating mechanism set above the frame to make the spraying effect on the sides of the mesh fence uniform, thereby solving the problem of uneven spraying of the mesh fence and easy corrosion of the sides.

[0004] While the existing technology mentioned above achieves regular movement of the spray gun head through a reciprocating mechanism, effectively improving the uniform coverage of the coating on the wrought iron fence surface, it still has serious drawbacks in practical applications: After the high-speed spray of paint mist from the spray gun head penetrates the fence structure, a large amount of unattached overspray paint mist is not effectively recovered or reused, but instead directly impacts and adheres to the inner wall of the frame behind the equipment, causing continuous waste of paint. Simultaneously, some fine paint mist, lacking effective airflow control and a closed purification system, escapes from the frame openings into the working environment, not only polluting the workshop air and increasing volatile organic compound emissions, endangering the health of operators, but also easily forming dust particles that adhere to the surface of the workpiece to be sprayed, leading to quality defects such as particles and pitting in the coating. Therefore, this application proposes a high-pressure spraying device and method for wrought iron fence spraying. Summary of the Invention

[0005] The purpose of this invention is to provide a high-pressure spraying device and method for wrought iron railing spraying to solve the problems mentioned in the background art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a high-pressure spraying device for iron art guardrail spraying processing, comprising a suspension frame and a plurality of hooks inside the suspension frame for conveying the iron art guardrail, further comprising:

[0007] A paint spraying box for the iron art guardrail to pass through, and a paint spraying gun inside the paint spraying box for spraying paint on the iron art guardrail, one side of the paint spraying box is provided with an air exhaust shell, and an electrostatic adsorption assembly is arranged inside the paint spraying box for controlling the paint mist oversprayed by the paint spraying gun, a plurality of side pipes are arranged inside the paint spraying box, and a negative pressure assembly for recovering the paint mist adsorbed by the electrostatic adsorption assembly is arranged on one side of the side pipe;

[0008] A sleeve shell is arranged on the outer surface of the side pipe and is connected with a plurality of jacks extending into the side pipe, and a narrowing groove gradually narrowing is formed in the inside of the jack;

[0009] A connecting plate is connected to the inside of the paint spraying box, a rotatable rotating seat is fixedly connected to the top of the hook, a plurality of grooves are formed in the outer surface of the rotating seat, and a self-rotation assembly for driving the rotating seat to rotate is arranged in the inside of the connecting plate.

[0010] Preferably, the electrostatic adsorption assembly comprises a weak electrostatic plate fixedly connected to the inside of the paint spraying box, a strong electrostatic plate is arranged on one side of the weak electrostatic plate, and a pulse electrostatic generator for applying intermittent high-voltage electricity to the weak electrostatic plate and the strong electrostatic plate is fixedly connected to the top of the paint spraying box.

[0011] Preferably, the negative pressure assembly comprises a gas collecting shell arranged in the inside of the air exhaust shell, the gas collecting shell is connected with the plurality of side pipes, a throat pipe is arranged at the connection between the inside of the gas collecting shell and the side pipe, and an air pump for pumping air into the gas collecting shell is fixedly connected to the bottom of the air exhaust shell.

[0012] Preferably, one end of the side pipe is fixedly connected with an air suction nozzle, an auxiliary narrow pipe is fixedly connected in the inside of the side pipe, a funnel cylinder is arranged in the inside of the side pipe, the plurality of jacks are fixedly connected with the funnel cylinder, and a tension spring fixedly connected with the jack is arranged in the inside of the sleeve shell.

[0013] Preferably, the top of the air exhaust shell is connected with an exhaust pipe, the gas collecting shell extends into the inside of the exhaust pipe, a spiral baffle is fixedly connected in the inside of the exhaust pipe, a narrowing pipe is formed in the top of the exhaust pipe, a collecting shell is fixedly connected to the outer surface of the narrowing pipe, a collecting cavity is formed between the collecting shell and the narrowing pipe, and a plurality of discharge holes are formed in the inner wall of the narrowing pipe.

[0014] Preferably, the self-rotation assembly comprises a driving rod slidingly connected to the inside of the connecting plate, an electrified plate is fixedly connected in the inside of the connecting plate, an electric rod for driving the driving rod to move is fixedly connected in the inside of the electrified plate, and the driving rod is matched with the groove.

[0015] Preferably, the inside of the connecting plate is slidably connected with a feeler rod, and the feeler rod is matched with the groove, one end of the feeler rod is fixedly connected with a touch rod, and the inside of the connecting plate is fixedly connected with a button matched with the touch rod.

[0016] Preferably, the outer surface of the touch rod is fixedly connected with a limiting sheet, the outer surface of the touch rod is sleeved with a sleeve spring, one end of the sleeve spring is fixedly connected with the limiting sheet, and the other end of the sleeve spring is fixedly connected with the connecting plate.

[0017] Preferably, the outer surface of the suspension frame is fixedly connected with a plurality of supports for supporting the suspension frame, and the inside of the suspension frame is slidably connected with a plurality of guide blocks rotationally connected with the rotating seat.

[0018] The application also provides a high-pressure spraying method for iron art guardrail spraying processing, comprising the following steps:

[0019] S1, by hanging the iron art guardrail on the hook, driving the iron art guardrail to move to the inside of the paint spraying box;

[0020] S2, the user holds the paint spraying gun to operate, and sprays paint on the iron art guardrail passing through the inside of the paint spraying box, while the electrostatic adsorption assembly and the negative pressure assembly are started to run synchronously to absorb the oversprayed paint mist;

[0021] S3, when the iron art guardrail passes through the inside of the paint spraying box, the self-rotation assembly is operated to drive the iron art guardrail to rotate.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] 1. By sliding the guide block in the suspension frame, the iron art guardrail is stably and continuously conveyed, the spraying rhythm consistency is ensured, the rotating seat can be freely rotated to drive the hook to adjust the posture of the guardrail, the guardrail is turned over at multiple angles when passing through the paint spraying box, the "spraying blind area" of complex parts such as lattice, bent pipe and node is effectively eliminated, the comprehensiveness and uniformity of the paint film are significantly improved, the phenomena of missed spraying and thin spraying are avoided, the product appearance quality and corrosion resistance are improved, the weak static plate applies low voltage to pre-charge and preliminarily slow down the flying paint mist, the subsequent capture efficiency is improved, the strong static plate applies high voltage to form a strong electric field to repel and constrain the charged particles, guide them to the air suction area, the pulse electrostatic generator adopts an intermittent power supply mode to realize the "adsorption-release" cycle, and the particles are efficiently captured during adsorption; the electric field disappears at the moment of power failure, the adhered particles lose the constraint, and are easily removed, the instantaneous airflow just acts on the surface of the static plate to "blow and strip" the paint mist particles that have just lost the electrostatic constraint and quickly suck them into the side pipe. The dust is actively removed to prevent the paint particles from being accumulated on the static screen for a long time to cause channel blockage or efficiency reduction. The "one-tight-one-loose" pulse mode is more energy-saving than continuous operation, the air pump does not need to run at high load all day long, and the energy consumption and equipment wear are reduced.

[0024] 2. When the transposition seat slides along with the guide block on the hanger and enters between the connecting plates, the groove on its outer periphery contacts the driving rod to form a mechanical limit. Since the driving rod blocks the straight passage path, the transposition seat must rotate around its own axis before it can continue to move after the next groove is aligned with the driving rod, thereby forcibly driving the hook and the hung iron art guardrail to complete a quantitative rotation. This mechanical linkage mode of "clamping-rotation-release" can realize the multi-angle turning of the guardrail in the spraying process without additional motors or transmission devices, effectively eliminating the "spraying blind area" of complex structures (such as carved patterns, bent pipes, and cross bars), greatly improving the uniformity and integrity of the paint film. The driving rod is driven by an electric rod and can slide within the connecting plate to adjust its extension position and protruding height. By controlling the action of the electric rod, the engagement depth or triggering timing of the driving rod and the groove can be changed, thereby adjusting the rotation angle and frequency of the transposition seat. During the rotation movement of the transposition seat, its edge periodically extrudes the probe rod, pushing it to slide inward. The probe rod drives the touch rod to move, compresses the sleeve spring, and until the touch rod hits the button, triggering the output of an electrical signal. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the first perspective structural schematic diagram of the present application;

[0026] Figure 2 It is the second perspective structural schematic diagram of the present application;

[0027] Figure 3 It is the cross-sectional structural schematic diagram of the paint spraying box in the present application;

[0028] Figure 4 It is the structural enlarged schematic diagram of position A in the present application; Figure 3

[0029] Figure 5 It is the structural schematic diagram of the gas collecting shell in the present application;

[0030] Figure 6 It is the cross-sectional structural schematic diagram of the air suction nozzle in the present application;

[0031] Figure 7 It is the structural enlarged schematic diagram of position B in the present application; Figure 6

[0032] Figure 8 It is the cross-sectional structural schematic diagram of the side pipe in the present application;

[0033] Figure 9 It is the cross-sectional structural schematic diagram of the exhaust pipe in the present application;

[0034] Figure 10 It is the structural schematic diagram of the connecting plate in the present application;

[0035] Figure 11 ​​The cross-sectional structure of the connecting plate in the present application is shown in the schematic view.

[0036] In the figure: 100, hanging rack; 101, support; 102, hook; 103, guide block; 104, rotating seat; 200, paint spraying box; 201, human cavity; 202, paint spraying gun; 203, side door; 204, air extraction shell; 205, air collection shell; 206, air pump; 207, exhaust pipe; 208, weak electrostatic plate; 209, strong electrostatic plate; 210, air suction nozzle; 211, pulse electrostatic generator; 212, side pipe; 213, throat pipe; 214, collection shell; 215, narrow pipe; 216, spiral baffle; 217, discharge hole; 218, collection cavity; 219, auxiliary narrow pipe; 300, sleeve shell; 301, top rod; 302, narrowing groove; 303, tension spring; 304, funnel cylinder; 305, positioning sheet; 306, communication groove; 400, connecting plate; 401, driving rod; 402, groove; 403, electrified plate; 404, electric rod; 405, probe rod; 406, touch rod; 407, limiting sheet; 408, sleeve spring; 409, button. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0038] Embodiment one: please refer to Figure 1 - Figure 11 The present application provides a technical solution: a high-pressure spraying device for iron art guardrail spraying processing, comprising a hanging rack 100 and a plurality of hooks 102 for conveying iron art guardrails placed inside the hanging rack 100, a plurality of supports 101 for supporting the hanging rack 100 are fixedly connected to the outer surface of the hanging rack 100, a plurality of guide blocks 103 rotatably connected with rotating seats 104 are slidingly connected inside the hanging rack 100, the smooth conveying of iron art guardrails is realized by the sliding of the guide blocks 103 along the hanging rack 100, and the continuity and efficiency of the spraying operation are significantly improved. The rotating seat 104 has a free rotation function, and the angle of the hook 102 can be adjusted according to the control signal or manual intervention during the conveying process, so that the iron art guardrail is driven to realize multi-angle overturning when passing through the paint spraying area, effectively avoiding the "occlusion blind area" existing in the traditional fixed posture spraying, and greatly improving the comprehensiveness and uniformity of the paint film coverage.

[0039] The paint spraying box 200 is used for the iron rail to pass through, and the inside of the paint spraying box 200 is provided with a paint spraying gun 202 for spraying paint on the iron rail, so that efficient atomization spraying can be implemented on the moving rail. By arranging the paint spraying box 200, a relatively narrow cavity can be formed, so that the dispersion of paint mist is inhibited. In order to solve the problem of serious waste of paint mist in the traditional spraying, the paint spraying box 200 is provided with an air exhaust shell 204 on one side, and a negative pressure system is integrated in the inside of the air exhaust shell 204 to form an air flow control channel. More importantly, the paint spraying box 200 is internally provided with an electrostatic adsorption assembly for capturing oversprayed paint mist which cannot be attached to the surface of the workpiece during the spraying process and flying over the rail, so as to prevent the paint mist from polluting the equipment or escaping to the workshop environment.

[0040] The sleeve shell 300 is sleeved on the outer surface of the side pipe 212, and a plurality of top rods 301 extending into the inside of the side pipe 212 are connected in the inside of the sleeve shell 300. The inside of the top rod 301 is provided with a narrowing groove 302 which is gradually narrowed. By arranging a plurality of top rods 301, turbulence of gas can be caused to increase the agglomeration between paint mist particles and capture the small particles.

[0041] Further, the electrostatic adsorption assembly includes a weak electrostatic plate 208 fixedly connected to the inside of the paint spraying box 200. A strong electrostatic plate 209 is arranged on one side of the weak electrostatic plate 208. A pulse electrostatic generator 211 for applying intermittent high voltage to the weak electrostatic plate 208 and the strong electrostatic plate 209 is fixedly connected to the top of the paint spraying box 200. By arranging the two layers of electrostatic nets of the weak electrostatic plate 208 and the strong electrostatic plate 209, the strong and weak electrostatic cooperation can be formed in cooperation with the pulse electrostatic generator 211. At the same time, when the pulse electrostatic generator 211 works, the electrostatic field works with full strength to capture and constrain the flying paint mist particles. Then, at the moment when the electrostatic field disappears after stopping working, the constraint force on the particles attached to the grid is suddenly reduced, and the particles become extremely easy to be removed. The weak electrostatic plate 208 is applied with a lower voltage, and its main role is not adsorption, but to pre-charge and preliminarily slow down the flying paint mist particles. The strong electrostatic plate 209 is applied with a higher voltage to form a strong electrostatic field, which generates a significant repulsive force and constraint force on the charged particles to push them to the suction port of the negative pressure assembly, so as to realize the cycle operation of "adsorption-releasing-clearing", and avoid the efficiency reduction caused by the long-term accumulation of paint on the electrostatic plate.

[0042] Further, the negative pressure assembly includes a gas collecting shell 205 arranged in the inside of the air exhaust shell 204. The gas collecting shell 205 is connected with a plurality of side pipes 212, and a throat pipe 213 is arranged at the connection between the inside of the gas collecting shell 205 and the side pipes 212. A gas pump 206 for pumping gas into the gas collecting shell 205 is fixedly connected to the bottom of the air exhaust shell 204. The gas pump 206 can supply gas to the gas collecting shell 205, so that continuous gas flow is formed in the gas collecting shell 205. When the gas passes through the throat pipe 213, the side pipes 212 generate suction force according to the Venturi principle, and the plurality of side pipes 212 are directed towards the electrostatic adsorption assembly, so as to suck away the paint mist.

[0043] One end of the side pipe 212 is fixedly connected with the suction nozzle 210, the inside of the side pipe 212 is fixedly connected with the auxiliary narrow pipe 219, the inside of the side pipe 212 is provided with the funnel cylinder 304, a plurality of top rods 301 are fixedly connected with the funnel cylinder 304, and the inside of the sleeve shell 300 is fixedly connected with the tension spring 303 fixedly connected with the top rod 301, wherein the suction nozzle 210 and the auxiliary narrow pipe 219 are arranged to form a multi-stage tapered Venturi array from wide to narrow inside the side pipe 212. The speed of the airflow increases once and the pressure decreases once every time the airflow passes through a diameter reducing section. This multi-stage acceleration causes the collision probability between paint mist particles in the airflow and between particles and the pipe wall to increase exponentially. Intense collision causes fine particles to coalesce into larger particle groups. Large particle groups are more likely to be captured due to their greater mass and momentum and inertia in subsequent sudden expansion sections, thereby being captured. Meanwhile, the funnel cylinder 304 is connected by a plurality of top rods 301, so that it will shake when subjected to airflow passing through. Meanwhile, the narrowed slot 302 can be passed through by the gas to make the gas carry particles collide with each other. The positioning sheet 305 arranged on one side of the funnel cylinder 304 can detect the pressure received by the funnel cylinder 304, so as to judge the strength of the airflow.

[0044] Further, the top of the air extraction shell 204 is connected with the exhaust pipe 207, the air collection shell 205 extends to the inside of the exhaust pipe 207, the inside of the exhaust pipe 207 is fixedly connected with the spiral baffle 216, the top of the exhaust pipe 207 is provided with the narrowed pipe 215, the outer surface of the narrowed pipe 215 is fixedly connected with the collection shell 214, and a collection cavity 218 is formed between the collection shell 214 and the narrowed pipe 215. A plurality of discharge holes 217 are formed in the inner wall of the narrowed pipe 215. The exhaust pipe 207 is arranged to discharge the paint mist after being treated by adsorption. The gas carrying the paint mist moves in a spiral state under the guidance of the spiral baffle 216. Centrifugal force is generated under the guidance of the narrowed part of the narrowed pipe 215, so that the paint mist particles pass through the discharge holes 217 and enter the collection cavity 218 for storage.

[0045] Specifically, the user holds the paint spraying gun 202 in the human cavity 201 to operate, and sprays the iron guardrail inside the paint spraying box 200. At the same time, the air pump 206 is turned on to input air into the air collection shell 205, so that the air is finally discharged through the exhaust pipe 207. The gas flows in the air collection shell 205 and passes through a plurality of throat pipes 213, thereby forming a negative pressure to absorb the gas from the side pipe 212. At this time, the suction nozzle 210 will generate suction, and the pulse electrostatic generator 211 is turned on to provide static electricity for the weak electrostatic plate 208 and the strong electrostatic plate 209, so that the oversprayed paint mist passes through the weak electrostatic plate 208 and the strong electrostatic plate 209 after flying over the iron guardrail. Most of the particles are charged and decelerated and dispersed, and then are sucked away by the suction nozzle 210 and discharged through the exhaust pipe 207. The charged particles pass through the funnel cylinder 304 to be accelerated, and part of them pass through the narrowed slot 302 in the top rod 301, so that the particles collide with each other to form clusters. At the same time, the top rod 301 can increase the turbulent flow to increase the clustering efficiency. The particles after clustering will be limited by the spiral baffle 216 to rotate upward when climbing through the exhaust pipe 207. When rotating along the inside of the narrowed pipe 215, the particles will be discharged through the discharge hole 217 to the collection cavity 218 under the action of centrifugal force. The gas will be discharged through the narrowed pipe 215 for subsequent treatment.

[0046] Furthermore, the pulse electrostatic generator 211 and the air pump 206 are synchronous, and at the moment when the pulse electrostatic generator 211 is closed, the control system of the air pump 206 sends a command to increase the flow rate, so that the suction nozzle 210 generates a stronger, instantaneous pulse negative pressure air flow, which "blows down" the paint particles that have lost restraint and sucks them in. Through the "tight and loose" pulse mode, the system actively prevents the paint from accumulating too much on the recovery grid, maintains long-term stable high efficiency, and the pulse working mode itself is more energy-saving than continuous working. Synchronous negative pressure throttling also avoids the continuous waste of compressed air.

[0047] In summary, through the sliding of the guide block 103 in the suspension frame 100, the smooth and continuous conveying of the iron rail guard is realized, the spraying rhythm consistency is ensured, the rotating seat 104 can rotate freely, the hook 102 adjusts the posture of the guard rail, the multi-angle overturning is realized when passing through the paint spraying box 200, the "spraying blind area" of complex parts such as lattice, elbow and node is effectively eliminated, the comprehensiveness and uniformity of the paint film are significantly improved, the phenomenon of missed spraying and thin spraying is avoided, the appearance quality and corrosion resistance of the product are improved, the low voltage of the weak static plate 208 is applied to pre-charge and preliminarily slow down the flying paint mist, the subsequent capture efficiency is improved, the high voltage of the strong static plate 209 is applied to form a strong electric field to repel and constrain the charged particles and guide them to the air suction area, the pulse electrostatic generator 211 adopts an intermittent power supply mode to realize the "adsorption-release" cycle, and the particles are efficiently captured during adsorption; the electric field disappears at the moment of power failure, and the adhered particles lose the constraint and are easy to remove, and the instantaneous airflow acting on the surface of the static plate 208 / 209 just "blows off the paint particles" that have just lost the electrostatic constraint and quickly sucks them into the side pipe 212. The active dust removal is realized to prevent the paint particles from being accumulated on the electrostatic net for a long time to cause channel blockage or efficiency reduction. The pulse mode of "tight and loose" is more energy-saving than continuous operation, and the air pump 206 does not need to run all day long under high load, thereby reducing energy consumption and equipment wear.

[0048] Embodiment two: please refer to Figure 1 Figure 11 The application also provides a technical solution, which is different from the technical solution of embodiment one: a high-pressure spraying device for iron rail guard spraying processing, further comprising a connecting plate 400 connected to the inside of the paint spraying box 200, the top of the hook 102 is fixedly connected with a rotatable rotating seat 104, and a plurality of grooves 402 are formed in the outer surface of the rotating seat 104, and the inside of the connecting plate 400 is provided with a self-rotation assembly for driving the rotating seat 104 to rotate, and the cooperation of the connecting plate 400 and the self-rotation assembly can drive the iron rail guard to rotate to improve the comprehensiveness of the paint spraying.

[0049] Further, the self-rotation assembly comprises a driving rod 401 slidingly connected to the inside of the connecting plate 400, the inside of the connecting plate 400 is fixedly connected with an electrified plate 403, the inside of the electrified plate 403 is fixedly connected with an electric rod 404 for driving the driving rod 401 to move, and the driving rod 401 is matched with the grooves 402, and the driving rod 401 can limit the movement of the rotating seat 104, which makes the rotating seat 104 need to rotate to pass through the driving rod 401 to change the position of the iron rail guard, so that the paint spraying gun 202 sprays paint, and the electric rod 404 can adjust the position of the driving rod 401 to change the rotation angle of the rotating seat 104.

[0050] ​The inside of the connecting plate 400 is slidably connected with a feeler rod 405, and the feeler rod 405 is matched with the groove 402, one end of the feeler rod 405 is fixedly connected with a touch rod 406, and the inside of the connecting plate 400 is fixedly connected with a button 409 matched with the touch rod 406, the outer surface of the touch rod 406 is fixedly connected with a limiting sheet 407, the outer surface of the touch rod 406 is sleeved with a sleeve spring 408, one end of the sleeve spring 408 is fixedly connected with the limiting sheet 407, the other end of the sleeve spring 408 is fixedly connected with the connecting plate 400, the setting of the feeler rod 405 can position the moving position of the rotating seat 104, and the movement of the rotating seat 104 will extrude the feeler rod 405 to drive the touch rod 406 to touch the button 409 to realize the transmission of the electric signal, so as to judge the position of the rotating seat 104.

[0051] Specifically, when the iron railings pass through the inside of the paint spraying box 200, the hooks 102 connected with the iron railings will be rotated by the rotating seat 104 to change the direction, the driving of the guide block 103 will drive the rotating seat 104 to enter between the two connecting plates 400, and under the limitation of the driving rod 401, the rotating seat 104 will be clamped into the inside of the groove 402, so that the rotating seat 104 is forced to rotate, and when the rotating seat 104 moves, it constantly touches the feeler rod 405 to make it be extruded to drive the touch rod 406 to hit the button 409, so as to realize the signal transmission and record the position of the iron railings, and the single electric rod 404 can be operated to control the position of the single driving rod 401, so that the iron railings of different specifications rotate at different rotating speeds.

[0052] In summary, when the rotating seat 104 slides on the hanging frame 100 along with the guide block 103 and enters between the two connecting plates 400, the groove 402 on the outer periphery of the rotating seat 104 is in contact with the driving rod 401 to form mechanical limiting. Since the driving rod 401 blocks the straight passage path, the rotating seat 104 must rotate around its own axis to continue to move after the next groove 402 is aligned with the driving rod 401, so as to forcibly drive the hooks 102 and the hung iron railings to complete a quantitative rotation. This mechanical linkage mode of “clamping-rotating-releasing” can realize the multi-angle turning of the railings in the spraying process without additional motors or transmission devices, effectively eliminates the “spraying blind area” of complex structures such as carvings, bent pipes and cross rods, greatly improves the uniformity and integrity of the paint film, and the driving rod 401 is driven by the electric rod 404 to be slidably adjusted in the connecting plate 400 to adjust the extension position and protrusion height. By controlling the action of the electric rod 404, the engagement depth or triggering timing of the driving rod 401 and the groove 402 can be changed, so as to adjust the rotating angle and frequency of the rotating seat 104. During the rotating movement of the rotating seat 104, the edge periodically extrudes the feeler rod 405, pushes it to slide inward, the feeler rod 405 drives the touch rod 406 to move, compresses the sleeve spring 408, and until the touch rod 406 hits the button 409 to trigger the electric signal output.

[0053] Example three: please refer to Figure 1 -Figure 11 The application also provides a technical solution, which is different from the technical solution of the first embodiment: a high-pressure spraying method for iron art guardrail spraying processing, comprising the following steps:

[0054] S1, by hanging the iron art guardrail on the hook 102, then operating the guide block 103 to drive the iron art guardrail to move to the inside of the paint spraying box 200;

[0055] S2, the user holds the paint spraying gun 202 in the human cavity 201 and operates, sprays paint on the iron art guardrail passing through the inside of the paint spraying box 200, at the same time, opens the air pump 206 to input gas into the gas collecting shell 205, so that the gas is finally discharged through the exhaust pipe 207, and the gas flowing in the gas collecting shell 205 will pass through a plurality of throat pipes 213, so as to form negative pressure to adsorb gas from the side pipe 212, at this time, the suction nozzle 210 will produce suction, at the same time, the pulse electrostatic generator 211 is opened to provide static electricity for the weak electrostatic plate 208 and the strong electrostatic plate 209, so that the oversprayed paint mist passes through the weak electrostatic plate 208 and the strong electrostatic plate 209 after passing through the iron art guardrail, wherein most of the particles are charged and decelerated, dispersed, and then sucked away by the suction nozzle 210 and discharged through the exhaust pipe 207;

[0056] S3, after the charged particles pass through the suction nozzle 210, part of them will pass through the funnel cylinder 304 to accelerate, and part of them will pass through the narrowed slot 302 in the top rod 301, so that the particles collide with each other to form clusters, and the top rod 301 can increase the turbulent flow to increase the clustering efficiency, the clustered particles will be limited by the spiral baffle 216 when climbing through the exhaust pipe 207, so as to rotate upward, and when rotating along the inside of the narrowed pipe 215, the clustered particles will be discharged through the discharge hole 217 to the inside of the collection cavity 218 under the action of centrifugal force, and the gas will be discharged through the narrowed pipe 215 for subsequent treatment;

[0057] S4, when the iron art guardrail passes through the inside of the paint spraying box 200, the hook 102 connected thereto will be driven to rotate by the rotating seat 104 to change the orientation, wherein the driving of the guide block 103 will drive the rotating seat 104 into the space between the two connecting plates 400, and under the limitation of the driving rod 401, the rotating seat 104 will be clamped into the inside of the groove 402, so that the rotating seat 104 is forced to rotate, and when the rotating seat 104 moves, it constantly touches the probe rod 405 to make it be squeezed to drive the touch rod 406 to hit the button 409, so as to realize the transmission of signals and record the position of the iron art guardrail, and at the same time, the single electric rod 404 can be operated to control the position of the single driving rod 401, so that iron art guardrails of different specifications rotate at different rotating speeds.

[0058] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0059] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure spraying device for wrought iron railing spraying, comprising a hanging frame (100) and a plurality of hooks (102) disposed therein for conveying wrought iron railings, characterized in that, Also includes: A paint spray box (200) is provided for the passage of wrought iron railings. The paint spray box (200) is equipped with a paint spray gun (202) for spraying paint on the wrought iron railings. An air extraction shell (204) is provided on one side of the paint spray box (200). An electrostatic adsorption component is provided inside the paint spray box (200) for controlling the paint mist that is oversprayed by the paint spray gun (202). Multiple side tubes (212) are provided inside the paint spray box (200). A negative pressure component is provided on one side of the side tubes (212) for recovering the paint mist adsorbed by the electrostatic adsorption component. The casing (300) is fitted on the outer surface of the side tube (212) and has multiple push rods (301) extending into the side tube (212) connected inside. The push rods (301) have gradually narrowing grooves (302) inside. A connecting plate (400) is connected to the inside of the paint spray box (200). The top of the hook (102) is fixedly connected to a rotatable turntable (104), and the outer surface of the turntable (104) is provided with multiple grooves (402). The connecting plate (400) is provided with a self-rotating component that drives the turntable (104) to rotate. The electrostatic adsorption assembly includes a weak electrostatic plate (208) fixedly connected inside the paint spray box (200), a strong electrostatic plate (209) is provided on one side of the weak electrostatic plate (208), and a pulse electrostatic generator (211) for applying intermittent high voltage to the weak electrostatic plate (208) and the strong electrostatic plate (209) is fixedly connected to the top of the paint spray box (200). The negative pressure assembly includes an air collection shell (205) disposed inside the air extraction shell (204), the air collection shell (205) being connected to multiple side pipes (212), and a throat pipe (213) being provided at the connection between the air collection shell (205) and the side pipes (212). An air pump (206) for pumping air into the air collection shell (205) is fixedly connected to the bottom of the air extraction shell (204). One end of the side tube (212) is fixedly connected to an air inlet (210), and an auxiliary narrow tube (219) is fixedly connected inside the side tube (212). A funnel tube (304) is provided inside the side tube (212), and multiple push rods (301) are fixedly connected to the funnel tube (304). Furthermore, a tension spring (303) fixedly connected to the push rod (301) is fixedly connected inside the casing (300).

2. The high-pressure spraying device for wrought iron railing spraying processing according to claim 1, characterized in that: The top of the suction shell (204) is connected to an exhaust pipe (207), the gas collection shell (205) extends into the interior of the exhaust pipe (207), a spiral baffle (216) is fixedly connected inside the exhaust pipe (207), a narrowing pipe (215) is provided at the top of the exhaust pipe (207), a collection shell (214) is fixedly connected to the outer surface of the narrowing pipe (215), and a collection cavity (218) is constructed between the collection shell (214) and the narrowing pipe (215), and a plurality of discharge holes (217) are provided on the inner wall of the narrowing pipe (215).

3. The high-pressure spraying device for wrought iron railing spraying processing according to claim 1, characterized in that: The self-rotating component includes a drive rod (401) slidably connected inside the connecting plate (400), an electric plate (403) is fixedly connected inside the connecting plate (400), and an electric rod (404) for driving the drive rod (401) to move is fixedly connected inside the electric plate (403), and the drive rod (401) is adapted to the groove (402).

4. A high-pressure spraying device for wrought iron railing spraying processing according to claim 1, characterized in that: The connecting plate (400) is slidably connected to a probe (405), and the probe (405) is adapted to the groove (402). One end of the probe (405) is fixedly connected to a touch rod (406), and the connecting plate (400) is fixedly connected to a button (409) adapted to the touch rod (406).

5. A high-pressure spraying device for wrought iron railing spraying processing according to claim 4, characterized in that: The outer surface of the contact rod (406) is fixedly connected to a limiting piece (407), and a sleeve spring (408) is sleeved on the outer surface of the contact rod (406). One end of the sleeve spring (408) is fixedly connected to the limiting piece (407), and the other end of the sleeve spring (408) is fixedly connected to the connecting plate (400).

6. A high-pressure spraying device for wrought iron railing spraying processing according to claim 1, characterized in that: The outer surface of the suspension frame (100) is fixedly connected with a plurality of brackets (101) for supporting it, and the interior of the suspension frame (100) is slidably connected with a plurality of guide blocks (103) that are rotatably connected to the rotator (104).

7. A high-pressure spraying method for wrought iron railing spraying, and a high-pressure spraying device for wrought iron railing spraying according to any one of claims 1-6, characterized in that, Includes the following steps: S1. By hanging the wrought iron railing on the hook (102), the wrought iron railing is moved to move into the paint spray box (200); S2. The user holds a spray gun (202) and sprays paint on the iron railing that passes through the inside of the spray gun (200). At the same time, the electrostatic adsorption component and the negative pressure component are activated to absorb the sprayed paint mist. S3. When the wrought iron railing passes inside the paint spray box (200), the self-rotating component is operated to drive the wrought iron railing to rotate.

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