A hot spray machine for corrosion protection of metal surfaces

Abstract

The application relates to a kind of anticorrosion hot spraying machine for metal surface treatment, belong to thermal spraying technical field, the present application includes mounting plate and side plate, the top of mounting plate is equipped with guide slot, and the inner wall of guide slot is slidably connected with sliding frame, the inner wall of sliding frame is provided with protection mechanism, the bottom of drive assembly is provided with another protection mechanism, to adapt to different diameter size metal workpiece when carrying out thermal spraying, avoid the influence of splashed coating to the area that has completed thermal spraying, by making the first sliding block retract after the movement of spraying gun is completed and gap is generated between workpiece, thereby adapt to different diameter size metal workpiece, when the workpiece surface is subsequently sprayed by spraying gun, splashed coating is effectively blocked by the aid of baffle, can accurately avoid splashed coating to the area that has completed thermal spraying to cause interference, thereby ensure the quality of thermal spraying processing, thereby improve the practicability of device, provide stability for subsequent thermal spraying processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal spraying, in particular to a corrosion-resistant thermal spraying machine for metal surface treatment. BACKGROUND

[0002] Thermal spraying refers to heating and melting coating materials, atomizing them into extremely fine particles by high-speed airflow, and spraying them onto the surface of a workpiece at a high speed to form a coating. Different coating materials can be selected to obtain one or several properties such as wear resistance, corrosion resistance, oxidation resistance, and heat resistance. In order to improve the performance of the metal surface, the coating is thermally sprayed on the surface of the metal during production and processing, thus a corresponding thermal spraying machine is needed.

[0003] Metal surface thermal spraying is a surface coating technology that uses a certain heat source to heat powder or wire-shaped metal or non-metal spraying materials to a molten or semi-molten state, then atomizes and sprays them onto the surface of a pretreated workpiece material at a certain speed by the power of the heat source itself or an external high-speed airflow, and forms a surface coating with specific functions by combining the physical and chemical changes of the spraying materials with the workpiece material. Thermal spraying technology has been widely used in aerospace, machinery, automobiles, metallurgy, petrochemicals, biological engineering, and nuclear energy fields.

[0004] The existing metal surface thermal spraying device is generally composed of a frame and a spraying gun. For example, a novel thermal spraying equipment for steel structure corrosion prevention (CN202420681066.0) moves the thermal spraying head structure by a transverse displacement structure, and then the atomized particles sprayed by the high-temperature thermal spraying head structure are used to spray the surface of the component, so that the surface of the steel component can be subjected to corrosion prevention treatment.

[0005] However, the spraying gun has a high flow rate during thermal spraying, which causes the coating material to impact the surface of the workpiece at a high speed, resulting in a large impact force and irregular spattering of part of the coating material. The spattered coating material is easy to splash onto the area that has completed thermal spraying, causing local accumulation or sparseness of the sprayed area, which significantly affects the thickness of the coating and thus the quality of thermal spraying processing. Moreover, the spattered coating material is easy to splash onto the operator, which poses a great safety hazard. SUMMARY

[0006] The present application aims to solve the problem of easy spattering of coating materials in the prior art, and proposes a corrosion-resistant thermal spraying machine for metal surface treatment.

[0007] In order to achieve the above object, the application adopts the following technical scheme: A kind of anticorrosion hot spray machine for metal surface treatment, including mounting plate and side plate, the top of mounting plate is equipped with guide slot, and the inner wall of guide slot is slidably connected with sliding frame, the side wall of sliding frame is provided with polishing mechanism, the side wall of side plate is slidably connected with moving block, and the inner wall of moving block is rotatably connected with guide rod, the outer wall of guide rod is equipped with drive assembly, and the bottom of drive assembly is fixedly installed with spray gun;

[0008] The inner wall of the sliding frame is provided with a protection mechanism, and the bottom of the drive assembly is provided with another protection mechanism, so that different diameter sizes of metal workpieces can be adapted during hot spraying, and the splashed coating does not affect the area that has completed hot spraying.

[0009] The polishing mechanism includes a U-shaped frame, and a polishing roller is installed in the inner wall of the U-shaped frame, so that the workpiece surface is smoother during hot spraying, and the oil stains, oxidation layers and other pollutants on the workpiece surface can be removed.

[0010] The bottom of the U-shaped frame is provided with a blowing mechanism to blow away dust, pollutants and other contaminants generated during polishing in a timely manner.

[0011] Further, the protection mechanism includes a baffle, a first sliding slot is formed in the inner wall of the baffle, a second sliding slot is formed in the inner wall of the first sliding slot, a first sliding block is slidably connected to the inner wall of the first sliding slot, a tension spring is fixedly connected to the end of the first sliding block, the end of the tension spring away from the first sliding block is fixedly connected to the inner wall of the first sliding slot, a clamping plate is slidably connected to the inner wall of the second sliding slot, a slide rod is fixedly connected to the inner wall of the clamping plate, a sliding plate is slidably connected to the inner wall of the first sliding block, an inclined slot is formed in the inner wall of the sliding plate, the outer wall of the slide rod is slidably connected to the inner wall of the inclined slot, a recess is formed in the side wall of the first sliding slot, a third sliding slot is formed in the side wall of the sliding plate, two protrusions are slidably connected to the inner wall of the third sliding slot, and a first spring is fixedly connected to the opposite sides of the two protrusions.

[0012] Further, the bottom of the upper baffle is fixedly connected with a plug rod, the top of the lower baffle is provided with a plug slot, the outer wall of the plug rod corresponds to the inner wall of the plug slot, and the side wall of the lower baffle is fixedly connected to the inner wall of the sliding frame.

[0013] Further, the polishing mechanism comprises a connecting plate, a telescopic rod fixedly connected to the top of the connecting plate, a U-shaped frame fixedly connected to the top of the telescopic rod, a second spring fixedly connected to the bottom of the U-shaped frame, a first rotating shaft fixedly connected to the end of the polishing roller, a first bevel gear fixedly connected to the end of the first rotating shaft away from the polishing roller, a second rotating shaft slidingly connected to the inner wall of the sliding frame, a circular ring fixedly connected to the outer wall of the second rotating shaft, a third spring fixedly connected to the bottom of the circular ring, a gear fixedly connected to the bottom of the second rotating shaft, and a second bevel gear fixedly connected to the end of the second rotating shaft away from the gear.

[0014] Further, the connecting plate is fixedly connected to the side wall of the sliding frame away from the telescopic rod, and the top of the mounting plate is fixedly connected with a rack.

[0015] Further, the air blowing mechanism comprises an L-shaped frame, a piston cylinder fixedly connected to the inner wall of the L-shaped frame, a connecting frame fixedly connected to the top of the piston cylinder, a second sliding block slidingly connected to the inner wall of the connecting frame, a connecting rod fixedly connected to the bottom of the second sliding block, a piston ring fixedly connected to the end of the connecting rod away from the second sliding block, a fourth spring fixedly connected to the bottom of the second sliding block, a cam rotatingly connected to the side wall of the U-shaped frame, a pressing rod fixedly connected to the side wall of the second sliding block, an air inlet pipe fixedly connected to the bottom of the piston cylinder, an air outlet pipe fixedly connected to the bottom of the piston cylinder, a one-way air valve fixedly installed in the air inlet pipe and the air outlet pipe, and an air blowing nozzle fixedly connected to the end of the air outlet pipe away from the piston cylinder and to the inner wall of the U-shaped frame.

[0016] Further, the L-shaped frame is fixedly connected to the bottom of the U-shaped frame away from the piston cylinder, the piston ring slides on the inner wall of the piston cylinder, the fourth spring is fixedly connected to the inner wall of the connecting frame away from the second sliding block, the outer wall of the cam is in transmission connection with the outer wall of the first rotating shaft through a belt, the outer wall of the cam corresponds to the outer wall of the pressing rod, and the top of the air blowing nozzle corresponds to the outer wall of the polishing roller.

[0017] Furthermore, the side wall of the side plate is provided with a limiting groove, and the inner wall of the limiting groove is slidably connected to the limiting groove. The outer wall of the limiting groove is rotatably connected to two hinge rods. One of the hinge rods is rotatably connected to the side wall of the mounting plate at one end away from the hinge axis, and the other hinge rod is rotatably connected to the bottom of the moving block at one end away from the hinge axis.

[0018] Furthermore, a clamping assembly is fixedly installed on the side wall of the side plate, a base is fixedly connected to the bottom of the side plate, an electric push rod is fixedly installed on the top of the side plate, and the output shaft of the electric push rod is fixedly connected to the top of the moving block.

[0019] Compared with existing technologies, the above solution has the following advantages:

[0020] 1. By retracting the first slider after the spray gun has moved, a gap is created between the slider and the workpiece, preventing contact with the workpiece surface. This allows the system to adapt to metal workpieces of different diameters. When the spray gun subsequently performs thermal spraying on the workpiece surface, some paint may splash due to the high flow rate of the spray gun. The baffle can then block the splashed paint, preventing it from affecting the already thermally sprayed area. This ensures the quality of the thermal spraying process, improves the practicality of the device, and provides a stable foundation for subsequent thermal spraying processes.

[0021] 2. The gear moves synchronously through the second rotating shaft, causing the first helical gear to drive the grinding roller to rotate through the first rotating shaft, thereby grinding the surface of the workpiece before thermal spraying. At the same time, since the rotation direction of the grinding roller is opposite to the rotation direction of the workpiece, it is equivalent to increasing the effective contact area between the grinding head and the workpiece, thereby speeding up the overall grinding progress. Grinding makes the surface of the workpiece smoother, removes contaminants such as oil and oxide layers from the surface of the workpiece, thereby avoiding corrosion and significantly improving the adhesion of the coating.

[0022] 3. The second slider is driven by the elastic force of the fourth spring to slide back along the inner wall of the connecting frame, so that the connecting rod drives the piston ring to continue to slide back synchronously. This process can draw external air into the piston cylinder through the air inlet pipe. Then, as the cam continues to rotate, the piston ring squeezes the air in the piston cylinder through the air outlet pipe into the air nozzle and then sprays it out. The sprayed air will blow air onto the surface of the grinding roller, so as to blow away the dust and contaminants generated during the grinding process from the surface of the grinding roller in time. This can prevent these impurities from mixing into the thermal spray coating, reduce the inclusions and pores in the coating, and ensure the density and uniformity of the coating. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure proposed in this invention;

[0024] Figure 2 Structure transmission diagram of mounting plate and moving block provided by the present application;

[0025] Figure 3 Structure connection diagram of protection mechanism and blowing mechanism provided by the present application;

[0026] Figure 4 Internal structure diagram of baffle provided by the present application;

[0027] Figure 5 Internal structure diagram of sliding plate provided by the present application;

[0028] Figure 6 Structure transmission diagram of polishing roller and gear provided by the present application;

[0029] Figure 7 Structure transmission diagram of first rotating shaft and piston ring provided by the present application.

[0030] The signs in the drawings are as follows: 1, mounting plate; 2, guide groove; 3, sliding frame; 4, protection mechanism; 5, polishing mechanism; 6, blowing mechanism; 7, insertion rod; 8, rack; 9, side plate; 10, moving block; 11, guide rod; 12, driving assembly; 13, spraying gun; 14, hinged rod; 15, hinged shaft; 16, limiting groove; 17, clamping assembly; 18, base; 19, electric push rod; 401, baffle; 402, first sliding groove; 403, second sliding groove; 404, first sliding block; 405, tension spring; 406, clamping plate; 407, sliding rod; 408, sliding plate; 409, inclined groove; 410, recess; 411, third sliding groove; 412, protruding block; 413, first spring; 414, insertion groove; 501, connecting plate; 502, telescopic rod; 503, U-shaped frame; 504, second spring; 505, polishing roller; 506, first rotating shaft; 507, first inclined tooth; 508, second rotating shaft; 509, circular ring; 510, third spring; 511, gear; 512, second inclined tooth; 601, L-shaped frame; 602, piston cylinder; 603, connecting frame; 604, second sliding block; 605, connecting rod; 606, piston ring; 607, fourth spring; 608, cam; 609, extrusion rod; 610, air inlet pipe; 611, air outlet pipe; 612, one-way air valve; 613, blowing nozzle. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the position or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only used to distinguish entities or operations from each other, and do not require or imply any actual relationship, order or relative importance between them.

[0033] Embodiment one, please refer to Figures 1-5 A kind of anticorrosion hot spraying machine for metal surface treatment, including mounting plate 1 and side plate 9, the top of mounting plate 1 is provided with guide slot 2, and the inner wall of guide slot 2 is slidably connected with sliding frame 3, the side wall of sliding frame 3 is provided with polishing mechanism 5, the side wall of side plate 9 is slidably connected with moving block 10, and the inner wall of moving block 10 is rotatably connected with guide rod 11, the outer wall of guide rod 11 is installed with drive assembly 12, and the bottom of drive assembly 12 is fixedly installed with spraying gun 13, the side wall of side plate 9 is provided with limiting slot 16, and the inner wall of limiting slot 16 is slidably connected with limiting slot 16, the outer wall of limiting slot 16 is rotatably connected with two hinged rods 14, one of hinged rods 14 is rotatably connected with the side wall of mounting plate 1 away from hinged shaft 15 one end, the other hinged rod 14 is rotatably connected with the bottom of moving block 10 away from hinged shaft 15 one end, the side wall of side plate 9 is fixedly installed with clamping assembly 17, the bottom of side plate 9 is fixedly connected with base 18, the top of side plate 9 is fixedly installed with electric push rod 19, and the output shaft of electric push rod 19 is fixedly connected with the top of moving block 10;

[0034] Further, the inner wall of the sliding frame 3 is provided with a protection mechanism 4, and the bottom of the driving assembly 12 is provided with another protection mechanism 4, so as to adapt to metal workpieces of different diameters when performing thermal spraying, and to avoid that the splashed coating affects the area that has completed thermal spraying. The protection mechanism 4 comprises a baffle 401, the inner wall of the baffle 401 is provided with a first sliding groove 402, the inner wall of the first sliding groove 402 is provided with a second sliding groove 403, a first sliding block 404 is slidably connected to the inner wall of the first sliding groove 402, the end of the first sliding block 404 is fixedly connected with a tension spring 405, one end of the tension spring 405 away from the first sliding block 404 is fixedly connected to the inner wall of the first sliding groove 402, a clamping plate 406 is slidably connected to the inner wall of the second sliding groove 403, the inner wall of the clamping plate 406 is fixedly connected with a sliding rod 407, the inner wall of the first sliding block 404 is slidably connected with a sliding plate 408, the inner wall side wall of the sliding plate 408 is provided with a inclined groove 409, the outer wall of the sliding rod 407 is slidably connected to the inner wall of the inclined groove 409, the side wall of the first sliding groove 402 is provided with a groove 410, the side wall of the sliding plate 408 is provided with a third sliding groove 411, two protruding blocks 412 are slidably connected to the inner wall of the third sliding groove 411, the opposite sides of the two protruding blocks 412 are fixedly connected with a first spring 413, and the bottom of the upper baffle 401 is fixedly connected with the insertion rod 7.

[0035] More specifically, when performing thermal spraying work, first, the metal workpiece is placed in the clamping assembly 17, and the metal workpiece is clamped by controlling the two clamping assemblies 17, then the output of the electric push rod 19 is driven, then the moving block 10 is driven to move downward in the inner side plate 9, at the same time, the moving block 10 drives the driving assembly 12 to move downward synchronously through the guide rod 11, at the same time, the driving assembly 12 drives the protection mechanism 4 and the spraying gun 13 to move synchronously, after moving a certain distance, the sliding plate 408 will first contact the metal workpiece, because the position of the workpiece is fixed, so the sliding plate 408 will be extruded during the subsequent movement, so as to slide inward along the inner wall of the first sliding block 404, at the same time, because the sliding rod 407 is slidably connected to the inner wall of the inclined groove 409, so the sliding plate 408 will extrude the sliding rod 407 when moving, so as to drive the clamping plate 406 to move into the sliding plate 408 through the sliding rod 407, during the process, the clamping plate 406 will gradually separate from the inner wall of the second sliding groove 403.

[0036] After the drive assembly 12 drives the spray gun 13 to the required height of the thermal spraying work, the drive electric push rod 19 is then stopped, and in the process, the sliding plate 408 is completely extruded into the inside of the first sliding block 404 by the metal workpiece, and the sliding rod 407 slides along the inner wall of the inclined groove 409 to the other end, and the clamping plate 406 is completely separated from the inside of the second sliding groove 403, and since the tension spring 405 always keeps pulling the first sliding block 404, when the clamping plate 406 is separated from the second sliding groove 403, the position of the first sliding block 404 is no longer limited, and then the first sliding block 404 is driven to slide along the inner wall of the first sliding groove 402 by the pulling force of the tension spring 405, so that the sliding plate 408 is separated from the surface of the workpiece, and then the first sliding block 404 slides into the baffle 401, and at this time the protrusions 412 correspond to the grooves 410, and then the protrusions 412 at both ends slide along the inner wall of the third sliding groove 411 outwardly by the elastic force of the first spring 413, and then the two protrusions 412 slide into the inner wall of the groove 410, and at this time the locking effect of the sliding plate 408 is realized by the inclined surface of the protrusion 412 engaging with the inner wall of the groove 410, so that the first sliding block 404 is simultaneously limited;

[0037] After the spray gun 13 is moved, the sliding plate 408 drives the first sliding block 404 to retract into the baffle 401, so that a gap is ensured between the baffle 401 and the surface of the metal workpiece, and when the baffle 401 moves relative to the workpiece during the thermal spraying of the spray gun 13 on the surface of the workpiece, the gap between the baffle 401 and the workpiece will not contact the surface of the workpiece, and due to the too fast flow rate of the coating sprayed by the spray gun 13, part of the coating will splash, and at this time the baffle 401 can block the splashed coating to avoid affecting the area that has completed thermal spraying, thereby ensuring the quality of thermal spraying processing;

[0038] When different diameters of workpieces are encountered, the height of the spray gun 13 that is lowered each time is not fixed, and by retracting the first sliding block 404, different diameters of metal workpieces can be adapted, thereby improving the practicality of the device and providing a stable basis for subsequent thermal spraying processing.

[0039] Embodiment two, please refer to Figures 1-3 and Figure 6 On the basis of embodiment one, in this embodiment, the polishing mechanism 5 includes a U-shaped frame 503, and the inner wall of the U-shaped frame 503 is provided with a polishing roller 505, so that the surface of the workpiece is polished to be smoother during thermal spraying, and contaminants such as oil stains and oxide layers on the surface of the workpiece are removed, and the top of the mounting plate 1 is fixedly connected with a rack 8;

[0040] Further, the polishing mechanism 5 comprises a connecting plate 501, a telescopic rod 502 is fixedly installed at the top of the connecting plate 501, the top of the telescopic rod 502 is fixedly connected to the bottom of a U-shaped frame 503, the bottom of the U-shaped frame 503 is fixedly connected with a second spring 504, one end of the second spring 504 away from the U-shaped frame 503 is fixedly connected to the top of the connecting plate 501, a first rotating shaft 506 is fixedly connected to the end of a polishing roller 505, a first bevel gear 507 is fixedly connected to one end of the first rotating shaft 506 away from the polishing roller 505, a second rotating shaft 508 is slidingly connected to the inner wall of the sliding frame 3, a circular ring 509 is fixedly connected to the outer wall of the second rotating shaft 508, a third spring 510 is fixedly connected to the bottom of the circular ring 509, one end of the third spring 510 away from the circular ring 509 is fixedly connected to the top of the sliding frame 3, a gear 511 is fixedly connected to the bottom of the second rotating shaft 508, a second bevel gear 512 is fixedly connected to one end of the second rotating shaft 508 away from the gear 511, the toothed inner wall of the second bevel gear 512 is matched and engaged with the toothed inner wall of the first bevel gear 507, one end of the connecting plate 501 away from the telescopic rod 502 is fixedly connected to the side wall of the sliding frame 3, and the toothed inner wall of the rack 8 is matched and engaged with the toothed inner wall of the gear 511.

[0041] More specifically, in the process that the moving block 10 moves downward, the end of the articulated rod 14 is synchronously moved, so that the other end of the articulated rod 14 drives the articulated shaft 15 to slide along the inner wall of the limiting groove 16, then the articulated shaft 15 drives the end of the other articulated rod 14 to move, and then the articulated rod 14 drives the mounting plate 1 to synchronously move upward, at the same time, the mounting plate 1 drives the other protection mechanism 4 to synchronously move through the sliding frame 3, at the same time, the upper baffle 401 drives the inserting rod 7 to slide into the inserting groove 414, and after the two protection mechanisms 4 move towards the metal workpiece, the range of the baffle 401 for blocking the paint is further improved.

[0042] Afterwards, when the thermal spraying process is carried out, the clamping assembly 17 drives the metal workpiece to rotate at high speed, and the spraying gun 13 is driven to move along the outer wall of the guide rod 11 by the driving assembly 12. In the process, the spraying gun 13 sprays the workpiece surface, and the upper protection mechanism 4 is synchronously moved, then the two protection mechanisms 4 are synchronously moved through the inserting rod 7, and the sliding frame 3 is driven to slide along the inner wall of the guide groove 2, in the process, the sliding frame 3 is synchronously moved by the second rotating shaft 508 driving the gear 511, because the gear 511 is matched and engaged with the rack 8, the gear 511 rotates in the process of moving, then the second helical gear 512 is synchronously rotated by the second rotating shaft 508, so that the first helical gear 507 drives the polishing roller 505 to rotate by the first rotating shaft 506, because the top of the moving polishing roller 505 is attached to the surface of the metal workpiece, the surface of the workpiece before thermal spraying is polished, and because the rotating direction of the polishing roller 505 is opposite to the rotating direction of the workpiece, the part in contact with the workpiece changes constantly, which increases the effective contact area of the polishing head and the workpiece, thereby speeding up the overall polishing progress. The workpiece surface is smoother through polishing, and the contaminants such as oil stains and oxidation layers on the workpiece surface can be removed, and the coating adhesion is significantly improved.

[0043] In example three, please refer to Figures 1-3 and Figure 7 On the basis of example two, in this example, the bottom of the U-shaped frame 503 is provided with the blowing mechanism 6, so that the dust, pollutants and the like generated in the polishing process are blown away in time during the thermal spraying process.

[0044] Further, the blowing mechanism 6 includes an L-shaped frame 601, and the inner wall of the L-shaped frame 601 is fixedly connected with a piston cylinder 602, the top of the piston cylinder 602 is fixedly connected with a connecting frame 603, the inner wall of the connecting frame 603 is slidingly connected with a second sliding block 604, the bottom of the second sliding block 604 is fixedly connected with a connecting rod 605, one end of the connecting rod 605 away from the second sliding block 604 is fixedly connected with a piston ring 606, the bottom of the second sliding block 604 is fixedly connected with a fourth spring 607, the side wall of the U-shaped frame 503 is rotatably connected with a cam 608, the side wall of the second sliding block 604 is fixedly connected with a pressing rod 609, the bottom of the piston cylinder 602 is fixedly connected with an air inlet pipe 610, and the bottom of the piston cylinder 602 is fixedly connected with an air outlet pipe 611, the inside of the air inlet pipe 610 and the air outlet pipe 611 is fixedly installed with a one-way air valve 612, one end of the air outlet pipe 611 away from the piston cylinder 602 is fixedly connected with a blowing nozzle 613, and the outer wall of the blowing nozzle 613 is fixedly connected to the inner wall of the U-shaped frame 503.

[0045] More specifically, when the thermal spraying is carried out, the cam 608 is synchronously rotated by the belt drive during the rotation of the first rotating shaft 506, then the outer wall of the cam 608 contacts the outer wall of the extrusion rod 609 during the rotation of the cam 608, then the extrusion rod 609 is extruded, the second sliding block 604 is driven to slide downward along the inner wall of the connecting frame 603, then the connecting rod 605 is driven to drive the piston ring 606 to slide along the inner wall of the piston cylinder 602, and the fourth spring 607 is compressed, then the cam 608 passes the outer wall of the extrusion rod 609, at this time the extrusion rod 609 is no longer extruded, then the second sliding block 604 is driven to slide along the inner wall of the connecting frame 603 by the elastic force of the fourth spring 607, the connecting rod 605 is driven to drive the piston ring 606 to continue to slide, the process can suck the external air into the inside of the piston cylinder 602 through the air inlet pipe 610, then when the cam 608 continues to rotate and the extrusion rod 609 is extruded again, the piston ring 606 extrudes the air in the piston cylinder 602 to the inside of the blowing nozzle 613 through the air outlet pipe 611 and then sprays out, the sprayed air can realize the blowing effect on the surface of the polishing roller 505, realize that the dust, pollutants and the like generated in the polishing process are blown away from the surface of the polishing roller 505 in time, so that these impurities can be avoided to be mixed into the thermal spraying coating, reduce the inclusions and pores in the coating, and ensure the compactness and uniformity of the coating.

[0046] The working principle of the present application is that: when the thermal spraying work is carried out, first, the metal workpiece is placed in the clamping assembly 17, the metal workpiece is clamped by controlling two clamping assemblies 17, then the output of the electric push rod 19 is driven, then the moving block 10 is driven to move downward in the inside of the side plate 9, at the same time the moving block 10 drives the driving assembly 12 to synchronously move downward through the guide rod 11, at the same time the driving assembly 12 drives the protection mechanism 4 and the spraying gun 13 to synchronously displace, then when the driving assembly 12 drives the spraying gun 13 to move downward to the height required by the thermal spraying work, then the driving electric push rod 19 is stopped;

[0047] In the process, the sliding plate 408 is completely extruded into the first slider 404 by the metal workpiece, and the slide rod 407 slides along the inner wall of the inclined groove 409 to the other end, and the clamping plate 406 is completely separated from the inside of the second slide groove 403, and the first slider 404 is no longer limited in position by the clamping plate 406 at this time, and then the first slider 404 is driven by the tension of the tension spring 405 to slide along the inner wall of the first slide groove 402, so that the sliding plate 408 is separated from the surface of the workpiece, and then the first slider 404 slides into the baffle 401, at this time the convex block 412 corresponds to the recess 410, and then the two ends of the convex block 412 are driven by the elastic force of the first spring 413 to slide along the inner wall of the third slide groove 411 outward, and then the two convex blocks 412 slide to the inner wall of the recess 410, at this time the convex block 412 is engaged with the inner wall of the recess 410 to realize the locking effect of the sliding plate 408, thereby limiting the position of the first slider 404;

[0048] After the thermal spraying process, the clamping assembly 17 drives the metal workpiece to rotate at high speed, and the spraying gun 13 is driven by the driving assembly 12 to move along the outer wall of the guide rod 11. In the process, the spraying gun 13 performs thermal spraying on the surface of the workpiece, and the upper protection mechanism 4 is driven to move synchronously, and then the two protection mechanisms 4 are driven to move synchronously by the inserting rod 7, and the sliding frame 3 is driven to slide along the inner wall of the guide groove 2. In the process, the sliding frame 3 drives the gear 511 to move synchronously by the second rotating shaft 508, and the gear 511 rotates in the process of moving due to the matching engagement of the gear 511 and the rack 8. Then the second bevel gear 512 is driven to rotate synchronously by the second rotating shaft 508, so that the first bevel gear 507 drives the polishing roller 505 to rotate by the first rotating shaft 506. Since the top of the polishing roller 505 after moving is in contact with the surface of the metal workpiece, the surface of the workpiece before thermal spraying is polished.

[0049] When the baffle 401 moves relative to the workpiece during thermal spraying of the workpiece surface by the spraying gun 13, the gap between the baffle 401 and the workpiece does not contact the surface of the workpiece. Due to the too fast flow rate of the coating sprayed by the spraying gun 13, part of the coating may splash, and the baffle 401 can block the splashed coating.

[0050] It should be noted that the devices in the present application are common market devices, which can be selected according to needs during use, and the circuit connection relationship of each device is a simple series and parallel connection circuit, and there is no innovation point in the circuit connection part. Those skilled in the art can easily realize it, which belongs to the prior art and will not be described in detail.

[0051] Although the present application has been disclosed with reference to the above embodiments, the application is not limited to the above embodiments. It will be apparent to those skilled in the art that various modifications and changes can be made thereto without departing from the spirit and scope of the application. The scope of the application should be limited only by the appended claims.

Claims

1. A corrosion-resistant thermal spraying machine for metal surface treatment, comprising a mounting plate (1) and a side plate (9), characterized in that: The top of the mounting plate (1) is provided with a guide groove (2), and a sliding frame (3) is slidably connected to the inner wall of the guide groove (2). A grinding mechanism (5) is provided on the side wall of the sliding frame (3). A moving block (10) is slidably connected through the side wall of the side plate (9), and a guide rod (11) is rotatably connected through the inner wall of the moving block (10). A drive assembly (12) is installed on the outer wall of the guide rod (11), and a spray gun (13) is fixedly installed at the bottom of the drive assembly (12). The inner wall of the sliding frame (3) is provided with a protective mechanism (4), and the bottom of the drive assembly (12) is provided with another protective mechanism (4) so ​​as to adapt to metal workpieces of different diameters during thermal spraying and avoid splashed paint from affecting the area that has been thermally sprayed. The grinding mechanism (5) includes a U-shaped frame (503), and a grinding roller (505) is installed on the inner wall of the U-shaped frame (503) to remove oil and oxide layer contaminants from the surface of the workpiece during thermal spraying. The protective mechanism (4) includes a baffle (401), and the inner wall of the baffle (401) is provided with a first sliding groove (402). The inner wall of the first sliding groove (402) is provided with a second sliding groove (403). The inner wall of the first sliding groove (402) is slidably connected to a first slider (404), and the end of the first slider (404) is fixedly connected to a tension spring (405). The end of the tension spring (405) away from the first slider (404) is fixedly connected to the inner wall of the first sliding groove (402). The inner wall of the second sliding groove (403) is slidably connected to a retaining plate (406), and the inner wall of the retaining plate (406) is fixedly connected to a retaining plate (406). A sliding rod (407) is fixedly connected to the inner wall of the first slider (404), and a sliding plate (408) is slidably connected to the inner wall of the sliding plate (408). An inclined groove (409) is opened through the inner side wall of the sliding rod (407), and the outer wall of the sliding rod (407) is slidably connected to the inner wall of the inclined groove (409). A groove (410) is opened on the side wall of the first sliding groove (402), and a third sliding groove (411) is opened through the side wall of the sliding plate (408). Two protrusions (412) are slidably connected to the inner wall of the third sliding groove (411), and a first spring (413) is fixedly connected to the opposite sides of the two protrusions (412). The bottom of the upper baffle (401) is fixedly connected to a rod (7), and the top of the lower baffle (401) is provided with a slot (414). The outer wall of the rod (7) corresponds to the inner wall of the slot (414), and the side wall of the lower baffle (401) is fixedly connected to the inner wall of the sliding frame (3).

2. The anti-corrosion thermal spraying machine for metal surface treatment according to claim 1, characterized in that, The grinding mechanism (5) includes a connecting plate (501), and a telescopic rod (502) is fixedly installed on the top of the connecting plate (501). The top of the telescopic rod (502) is fixedly connected to the bottom of the U-shaped frame (503), and a second spring (504) is fixedly connected to the bottom of the U-shaped frame (503). The end of the second spring (504) away from the U-shaped frame (503) is fixedly connected to the top of the connecting plate (501). A first rotating shaft (506) is fixedly connected to the end axis of the grinding roller (505), and a first helical tooth (507) is fixedly connected to the end of the first rotating shaft (506) away from the grinding roller (505). The inner wall of the moving frame (3) is slidably connected to a second rotating shaft (508), and the outer wall of the second rotating shaft (508) is fixedly connected to a ring (509). The bottom of the ring (509) is fixedly connected to a third spring (510), and the end of the third spring (510) away from the ring (509) is fixedly connected to the top of the sliding frame (3). The bottom of the second rotating shaft (508) is fixedly connected to a gear (511), and the end of the second rotating shaft (508) away from the gear (511) is fixedly connected to a second helical tooth (512). The inner wall of the tooth of the second helical tooth (512) meshes with the inner wall of the tooth of the first helical tooth (507).

3. The anti-corrosion thermal spraying machine for metal surface treatment according to claim 2, characterized in that, The end of the connecting plate (501) away from the telescopic rod (502) is fixedly connected to the side wall of the sliding frame (3), and the top of the mounting plate (1) is fixedly connected to a rack (8), the inner wall of the rack (8) meshing with the inner wall of the gear teeth (511).

4. The anti-corrosion thermal spraying machine for metal surface treatment according to claim 3, characterized in that, The bottom of the U-shaped frame (503) is provided with an air blowing mechanism (6); The air blowing mechanism (6) includes an L-shaped frame (601), and a piston cylinder (602) is fixedly connected to the inner wall of the L-shaped frame (601). A connecting frame (603) is fixedly connected to the top of the piston cylinder (602), and a second slider (604) is slidably connected through the inner wall of the connecting frame (603). A connecting rod (605) is fixedly connected to the bottom of the second slider (604), and a piston ring (606) is fixedly connected to the end of the connecting rod (605) away from the second slider (604). A fourth spring (607) is fixedly connected to the bottom of the second slider (604). The U-shaped frame (503) A cam (608) is rotatably connected to the side wall of the second slider (604), a squeeze rod (609) is fixedly connected to the side wall of the second slider (604), an air inlet pipe (610) is fixedly connected to the bottom of the piston cylinder (602), and an air outlet pipe (611) is fixedly connected to the bottom of the piston cylinder (602). A one-way air valve (612) is fixedly installed inside both the air inlet pipe (610) and the air outlet pipe (611). An air blowing nozzle (613) is fixedly connected to the end of the air outlet pipe (611) away from the piston cylinder (602), and the outer wall of the air blowing nozzle (613) is fixedly connected to the inner wall of the U-shaped frame (503).

5. A corrosion-resistant thermal spraying machine for metal surface treatment according to claim 4, characterized in that, The L-shaped frame (601) is fixedly connected to the bottom of the U-shaped frame (503) at one end away from the piston cylinder (602). The outer wall of the piston ring (606) slides against the inner wall of the piston cylinder (602). The fourth spring (607) is fixedly connected to the inner wall of the connecting frame (603) at one end away from the second slider (604). The outer wall of the cam (608) is connected to the outer wall of the first rotating shaft (506) via a belt. The outer wall of the cam (608) corresponds to the outer wall of the extrusion rod (609). The top of the air nozzle (613) corresponds to the outer wall of the grinding roller (505).

6. A corrosion-resistant thermal spraying machine for metal surface treatment according to claim 5, characterized in that, The side wall of the side plate (9) is provided with a limiting groove (16), and the inner wall of the limiting groove (16) is slidably connected to the limiting groove (16). The outer wall of the limiting groove (16) is rotatably connected to two hinge rods (14). One end of the hinge rod (14) away from the hinge axis (15) is rotatably connected to the side wall of the mounting plate (1), and the other end of the hinge rod (14) away from the hinge axis (15) is rotatably connected to the bottom of the moving block (10).

7. A corrosion-resistant thermal spraying machine for metal surface treatment according to claim 6, characterized in that, A clamping assembly (17) is fixedly installed on the side wall of the side plate (9), a base (18) is fixedly connected to the bottom of the side plate (9), an electric push rod (19) is fixedly installed on the top of the side plate (9), and the output shaft of the electric push rod (19) is fixedly connected to the top of the moving block (10).

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