Aluminum profile plasma spraying device

Abstract

The invention relates to the technical field of plasma spraying, and discloses an aluminum profile plasma spraying device which comprises a supporting table, one end of the supporting table is provided with a spraying unit, the spraying unit comprises an inner pipe, the bottom of the inner pipe is in sealed connection with a conveying pipe, and the top of the inner pipe is movably sleeved with an outer pipe; the outer pipe is provided with a nozzle at the position of the outer nozzle; a dredging mechanism is arranged at the top of the supporting table, the dredging mechanism comprises an inserting shaft, a dredging needle is fixedly installed at one end of the inserting shaft, and the outer side of the inserting shaft is movably sleeved with a supporting block; the multiple supporting tables and the multiple connecting assemblies of the supporting tables are distributed at equal intervals, and a supporting plate is movably connected between the multiple supporting tables in an inserted mode. The multiple groups of nozzles are arranged and are driven by the driving motor to integrally rotate back and forth, the spraying uniformity is improved, each group of nozzles is provided with a standby nozzle, so that the nozzles can be replaced in time when being blocked, and the problem that the working efficiency is reduced due to the blockage of the nozzles is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of plasma spraying, and in particular relates to a plasma spraying device for aluminum profiles. Background Art

[0002] Plasma spraying technology uses the heat generated by ionized gas from a DC power supply as a heat source to heat the metal powder or non-metal powder fed into the plasma or plasma flame by a powder feeder to a molten or semi-molten state. Under the acceleration of the flame, the molten or semi-molten material is heated to a very high speed and temperature in a short period of time and instantly impacts the surface of the workpiece to be sprayed. Under the action of inertia and thermal shock, it quickly spreads to form thin sheets and solidifies. The superposition of thin sheets forms a coating with a lamellar structure.

[0003] The Chinese patent application with the publication number CN115287578A discloses a plasma spray gun head, including a gun body, the gun body is divided into an ionization chamber and an air flow channel, a fixing seat is fixedly connected to the inner wall of one side of the gun body located in the ionization chamber, and the fixing seat is fixedly connected to the cathode head, the side wall of the gun body located around the fixing seat is fixedly sleeved with a gas pipe, and an anode block is fixedly connected to the inner wall of the other side of the ionization chamber corresponding to the cathode head. The invention arranges four powder tubes evenly inside the gun body, and uses an arc tube to connect each powder tube, so that in the process of injecting spray powder into the air flow channel, the powder injected from the lower powder tube is ejected from various angles of the air flow channel through the arc tube, thereby ensuring the uniformity of powder diffusion, and at the same time, a rotatable rotating part is arranged at the intersection of the air flow channel and the powder tube, so that the rotating part rotates under the impact of the spray powder, and drives the spray powder to obliquely intersect with the high-speed air flow.

[0004] However, the technical solution still has the following defects: the above device uses a nozzle to spray the heated material onto the workpiece to achieve the purpose of plasma spraying, but in actual use, the raw material of the spraying material is generally metal powder, which is transported into the plasma heating device through a pipeline for heating, and the metal powder is transported and accumulated in the pipeline, which may cause the spray gun to be blocked, thereby affecting the normal use of the spray gun. In view of this, the present invention is specially proposed. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an aluminum profile plasma spraying device, which improves the spraying uniformity by arranging multiple groups of nozzles and rotating them back and forth as a whole under the drive of a driving motor. Each group of nozzles is provided with a spare nozzle, so that the nozzle can be replaced in time when it is blocked, thereby preventing the problem of reduced work efficiency caused by nozzle blockage.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A plasma spraying device for aluminum profiles, comprising a support platform, a spraying unit is arranged at one end of the support platform, the spraying unit comprises an inner tube, an outer tube is movably sleeved on the top of the inner tube, outer nozzles are opened on both sides of the outer tube, an inner nozzle is opened on one side of the top of the inner tube, a pressure sensor is installed on the top of the inner tube, a nozzle is arranged on the outer tube at the position of the outer nozzle, the spraying unit is used to perform plasma spraying on the aluminum profile, and realize the conveying of metal powder through the inner tube and the outer tube;

[0008] A dredging mechanism is arranged on the top of the support platform, and the dredging mechanism comprises an insert shaft, and a dredging needle is fixedly mounted on one end of the insert shaft, and the dredging needle is aligned with the nozzle, and the dredging mechanism dredges the nozzle through the dredging needle.

[0009] As a preferred embodiment of the present invention, the support platform and its connecting assembly are provided in plurality and are distributed at equal intervals, and a support plate is movably connected between the plurality of support platforms, the support plate is annular, a base is fixedly mounted on one side of the support plate, a drive motor is fixedly mounted on one side of the base, a disc is fixedly mounted on the shaft end of the drive motor, a push rod is rotatably connected to one side of the top of the disc, and the other end of the push rod is rotatably connected to one end of one of the support platforms.

[0010] As a preferred embodiment of the present invention, the outer tube is fixedly provided with plug rods on both sides of the outer nozzle, sleeves are fixedly provided on both sides of the nozzle, the nozzle is movably connected to the plug rods through the sleeve, a baffle rod is fixedly provided at the bottom of the nozzle, an inner ring and an outer ring are fixedly provided at the top of the support platform, a space is provided between the inner ring and the outer ring, the baffle rod is movably connected to the space between the inner ring and the outer ring, the inner ring and the outer ring are concentrically provided, and the inner ring is movably connected to the outside of the outer tube in an eccentric state.

[0011] As a preferred embodiment of the present invention, a support block is movably sleeved on the outer side of the plug shaft, and the bottom of the support block is fixedly installed on the top of the support platform. The plug shaft is rotatably connected to a connecting plate at one end close to the dredging needle, and a sliding rod is fixedly installed on the top of the connecting plate. The sliding rod movably passes through the support block and extends to the outside, and a limiting plate is fixedly installed on the outer end of the sliding rod. A spring is movably sleeved on the sliding rod, and both ends of the spring are fixedly installed between the support block and the connecting plate.

[0012] As a preferred embodiment of the present invention, a servo motor is fixedly installed on the top of the support block, a turntable is fixedly installed on the shaft end of the servo motor, an arc-shaped baffle is fixedly installed on one side of the turntable, a fixed block is fixedly installed on the bottom of the connecting plate, a baffle column is fixedly installed on one side of the bottom of the fixed block, and the position of the baffle column is aligned with the center position of the turntable.

[0013] As a preferred embodiment of the present invention, a tooth groove is opened on the outer side of the turntable, and a first rack is arranged on the top of the turntable. The tooth shape of the first rack is adapted to the tooth groove, one end of the first rack is fixedly mounted on one side of the connecting plate, and the other end of the first rack is slidably connected to one side of the support block.

[0014] As a preferred embodiment of the present invention, a fixed seat is fixedly installed on the top of the support platform, a second rack is slidably connected to one side of the fixed seat, one end of the second rack is rotatably connected to a pull rod, the other end of the pull rod is rotatably connected to one side of the turntable, two fixed plates are fixedly installed on the top of the fixed seat, a fixed cylinder is installed between the two fixed plates, a rotating shaft is rotatably connected in the fixed cylinder, a first gear is fixedly installed on the bottom of the rotating shaft, and the first gear and the second rack are meshed with each other.

[0015] As a preferred embodiment of the present invention, a first pulley is fixedly installed on the top of the rotating shaft, a belt is movably connected to the outer side of the first pulley, the other end of the belt is meshingly connected to the second pulley, an inner cavity is opened inside the second pulley, a clamping plate is fixedly installed on the side wall of the inner cavity, the second pulley is located in the inner cavity and is movably connected to a ratchet, the ratchet is adapted to the clamping plate, and the ratchet is fixedly sleeved on the outer side of the top of the outer tube.

[0016] As a preferred embodiment of the present invention, a sleeve is movably connected to one end of the insertion shaft away from the clearing needle, and sliding grooves are provided on both sides of the sleeve. A sliding column is fixedly installed on the insertion shaft at the sliding groove, and the sliding column is slidably connected in the sliding groove. A second bevel gear is fixedly connected to one end of the sleeve, and one end of the second bevel gear is rotatably connected to one end of the support block.

[0017] As a preferred embodiment of the present invention, the bottom of the second bevel gear is meshed and connected with the first bevel gear, and a connecting shaft is fixedly installed at the bottom of the first bevel gear. The bottom of the connecting shaft movably passes through the support platform and extends to the inside. The connecting shaft is located at one end inside the support platform and a second gear is fixedly installed. A plurality of arc-shaped racks are installed on the top of the support plate, and the arc-shaped racks are meshed with the second gear.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention improves the spraying uniformity by arranging multiple groups of nozzles and rotating them back and forth as a whole under the drive of a driving motor. Each group of nozzles is provided with a spare nozzle, so that the nozzle can be replaced in time when it is blocked, thereby preventing the problem of reduced work efficiency caused by nozzle blockage.

[0020] The present invention monitors the pressure at the inner tube in real time by arranging a pressure sensor, and controls the servo motor to start when the pressure increases, so the response is rapid;

[0021] The invention provides a clearing needle which is inserted into the blocked nozzle, and the clearing needle rotates to clear the blocked nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an aluminum profile plasma spraying device of the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom structure of an aluminum profile plasma spraying device of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the push rod of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the arc-shaped rack and the second gear of the present invention;

[0026] Figure 5 It is a schematic diagram of the spring structure of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the servo motor of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the turntable of the present invention when it rotates half a circle;

[0029] Figure 8 It is a structural schematic diagram of the second rack of the present invention;

[0030] Fig. 9 This is a schematic diagram of the structure of the first gear of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the ratchet wheel of the present invention;

[0032] Fig.11 It is a schematic diagram of the structure of the outer ring and the inner ring of the present invention;

[0033] Fig.12 It is a schematic diagram of the internal structure of the outer tube and the inner tube of the present invention.

[0034] Reference numerals:

[0035] 100, support platform; 101, inner tube; 102, delivery tube; 103, pressure sensor; 104, inner nozzle; 105, outer tube; 106, outer nozzle; 107, plug rod; 108, nozzle; 109, sleeve; 110, inner sleeve ring; 111, outer sleeve ring; 112, stop rod;

[0036] 200, support block; 201, plug shaft; 202, dredging needle; 203, connecting plate; 204, slide rod; 205, limit plate; 206, spring;

[0037] 300, servo motor; 301, turntable; 302, arc baffle; 303, fixed block; 304, baffle column; 305, tooth groove; 306, first rack;

[0038] 400, fixed seat; 401, second rack; 402, pull rod; 403, first gear; 404, rotating shaft; 405, fixed plate; 406, fixed cylinder; 407, first pulley; 408, belt; 409, second pulley; 410, inner cavity; 411, clamping plate; 412, ratchet;

[0039] 500, support plate; 501, arc-shaped rack; 502, second gear; 503, connecting shaft; 504, first bevel gear; 505, second bevel gear; 506, sleeve; 507, slide groove; 508, slide column;

[0040] 600, base; 601, driving motor; 602, disc; 603, push rod; 604, fixing rod. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0042] Example 1

[0043] like Figure 1-Figure 12 As shown, a plasma spraying device for aluminum profiles comprises a support platform 100, one end of the support platform 100 is provided with a spraying unit, the spraying unit comprises an inner tube 101, the inner tube 101 is fixedly plugged into one end of the support platform 100, the bottom of the inner tube 101 is sealedly connected with a conveying tube 102, the top of the inner tube 101 is movably sleeved with an outer tube 105, both sides of the outer tube 105 are provided with outer nozzles 106, one side of the top of the inner tube 101 is provided with an inner nozzle 104, the inner nozzle 104 is aligned with one of the outer nozzles 106, the outer tube 105 is provided with a nozzle 108 at the position of the outer nozzle 106, the nozzle 108 and the outer nozzle 106 are sealed by a sealing member, the spraying unit is used to perform plasma spraying on the aluminum profile, and to realize the conveying of metal powder through the inner tube 101 and the outer tube 105;

[0044] A pressure sensor 103 is installed on the top of the inner tube 101. When the nozzle 108 in use is blocked, the paint cannot be sprayed out, so that the pressure in the inner tube 101 increases. The pressure sensor 103 detects the increase in the pressure in the inner tube 101 to determine that it is blocked, and controls the servo motor 300 to rotate one circle through the PLC control board;

[0045] A dredging mechanism is provided on the top of the support platform 100 , which includes an insertion shaft 201 , a dredging needle 202 is fixedly installed at one end of the insertion shaft 201 , a support block 200 is movably sleeved on the outer side of the insertion shaft 201 , and the bottom of the support block 200 is fixedly installed on the top of the support platform 100 .

[0046] The support platforms 100 and their connecting components are provided in plurality and are distributed at equal intervals, and a support plate 500 is movably connected between the plurality of support platforms 100. The support plate 500 is annular, and a base 600 is fixedly installed on one side of the support plate 500, and a driving motor 601 is fixedly installed on one side of the base 600, and a disc 602 is fixedly installed on the shaft end of the driving motor 601, and a push rod 603 is rotatably connected to one side of the top of the disc 602, and the other end of the push rod 603 is rotatably connected to one end of one of the support platforms 100.

[0047] like Figure 9-12 As shown, in a specific embodiment, the outer tube 105 is fixedly provided with an insertion rod 107 on both sides of the outer nozzle 106, and a sleeve 109 is fixedly provided on both sides of the nozzle 108. The nozzle 108 is movably sleeved on the insertion rod 107 through the sleeve 109. A blocking rod 112 is fixedly provided on the bottom of the nozzle 108, and an inner ring 110 and an outer ring 111 are fixedly provided on the top of the support platform 100. A gap is provided between the inner ring 110 and the outer ring 111, and the blocking rod 112 is movably connected to the gap between the inner ring 110 and the outer ring 111. The inner ring 110 and the outer ring 111 are concentrically provided, and the inner ring 110 is movably sleeved on the outside of the outer tube 105 in an eccentric state. In this arrangement, the rotation of the outer tube 105 drives the side nozzle 108 to rotate. During the rotation, the nozzle 108 is displaced relative to the outer tube 105 through the blocking rod 112 and the eccentrically arranged inner ring 110, so that the blocked nozzle 108 is separated from the outer tube 105, and the unblocked nozzle 108 is installed in close contact with the outer tube 105.

[0048] like Figure 6-Figure 8 As shown, further, the plug shaft 201 is rotatably connected to the connecting plate 203 at one end near the dredging needle 202, and a slide bar 204 is fixedly installed on the top of the connecting plate 203. The slide bar 204 movably penetrates the support block 200 and extends to the outside. A limit plate 205 is fixedly installed on the outer end of the slide bar 204. A spring 206 is movably sleeved on the slide bar 204, and both ends of the spring 206 are fixedly installed between the support block 200 and the connecting plate 203. In this setting, when the turntable 301 rotates a full circle, the elastic force of the spring 206 drives the connecting plate 203 to move, and the dredging needle 202 is inserted into the blocked nozzle 108.

[0049] Example 2

[0050] like Figure 6-Figure 8As shown, in a specific embodiment, a servo motor 300 is fixedly mounted on the top of the support block 200, a turntable 301 is fixedly mounted on the shaft end of the servo motor 300, an arc-shaped baffle 302 is fixedly mounted on one side of the turntable 301, a fixed block 303 is fixedly mounted on the bottom of the connecting plate 203, a stopper 304 is fixedly mounted on one side of the bottom of the fixed block 303, and the position of the stopper 304 is aligned with the center position of the turntable 301. In this configuration, the connecting plate 203 moves and drives the stopper 304 to move through the fixed block 303. When the turntable 301 rotates half a circle, the turntable 301 drives the arc-shaped baffle 302 to resist the stopper 304. At this time, the dredging needle 202 remains disengaged from the nozzle 108, and at the same time, the tooth groove 305 on the side of the turntable 301 is disengaged from the first rack 306.

[0051] like Figure 7 , Figure 8 As shown, further, a tooth groove 305 is provided on the outer side of the rotating disk 301, and a first rack 306 is provided on the top of the rotating disk 301. The tooth shape of the first rack 306 is adapted to the tooth groove 305. One end of the first rack 306 is fixedly mounted on one side of the connecting plate 203, and one side of the first rack 306 is slidably connected to one side of the supporting block 200. In this configuration, when the servo motor 300 rotates half a circle, it drives the rotating disk 301 to rotate, and the rotating disk 301 drives the connecting plate 203 to move through the meshing of the tooth groove 305 and the first rack 306.

[0052] like Figure 8 , Fig. 9 As shown, further, a fixing seat 400 is fixedly installed on the top of the support platform 100, and a second rack 401 is slidably connected to one side of the fixing seat 400, and a pull rod 402 is rotatably connected to one end of the second rack 401, and the other end of the pull rod 402 is rotatably connected to one side of the rotating disk 301. Two fixing plates 405 are fixedly installed on the top of the fixing seat 400, and a fixing cylinder 406 is installed between the two fixing plates 405. A rotating shaft 404 is rotatably connected in the fixing cylinder 406, and a first gear 403 is fixedly installed on the bottom of the rotating shaft 404, and the first gear 403 is meshed with the second rack 401. In this setting, the rotating disk 301 drives the second rack 401 to move through the pull rod 402, and the second rack 401 drives the first gear 403 to rotate through meshing, and the first gear 403 drives the first pulley 407 to rotate through the rotating shaft 404.

[0053] Example 3

[0054] like Figure 9-11As shown, in a specific embodiment, a first pulley 407 is fixedly installed on the top of the rotating shaft 404, a belt 408 is movably connected to the outer side of the first pulley 407, the other end of the belt 408 is meshingly connected to a second pulley 409, an inner cavity 410 is opened inside the second pulley 409, a clamping plate 411 is fixedly installed on the side wall of the inner cavity 410, the second pulley 409 is located in the inner cavity 410 and is movably connected to a ratchet 412, the ratchet 412 is adapted to the clamping plate 411, and the ratchet 412 is fixedly sleeved on the outer side of the top of the outer tube 105. In this arrangement, during the first half of the rotation of the turntable 301, the first pulley 407 drives the second pulley 409 to rotate via the belt 408. During the rotation of the second pulley 409, the internal clamping plate 411 thereof is deformed and becomes offset from the ratchet 412, so that the ratchet 412 does not rotate with the second pulley 409. When the turntable 301 rotates the second half of the rotation, the turntable 301 drives the second rack 401 to perform a movement opposite to that of the first half of the rotation via the pull rod 402, so that the second pulley 409 rotates in the opposite direction, and the second pulley 409 presses against the ratchet 412 via the clamping plate 411 to drive the outer tube 105 to rotate.

[0055] like Figure 4 , Figure 5 As shown, further, one end of the plug shaft 201 away from the dredging needle 202 is movably sleeved with a sleeve 506, and slide grooves 507 are opened on both sides of the sleeve 506. The plug shaft 201 is located at the slide groove 507 and a slide column 508 is fixedly installed. The slide column 508 is slidably connected in the slide groove 507, and one end of the sleeve 506 is fixedly sleeved with a second bevel gear 505, and one end of the second bevel gear 505 is rotatably connected to one end of the support block 200. The bottom of the second bevel gear 505 is meshed with the first bevel gear 504, and the bottom of the first bevel gear 504 is fixedly installed with a connecting shaft 503. The bottom of the connecting shaft 503 movably passes through the support platform 100 and extends to the inside. The connecting shaft 503 is located inside the support platform 100 and a second gear 502 is fixedly installed at one end. A plurality of arcuate racks 501 are installed on the top of the support plate 500, and the arcuate racks 501 and the second gear 502 are meshed with each other. In this arrangement, the support platform 100 drives the internal second gear 502 to move during its movement. The second gear 502 rotates by meshing with the arc-shaped rack 501, and drives the first bevel gear 504 to rotate through the connecting shaft 503. The first bevel gear 504 drives the second bevel gear 505 to rotate by meshing. The second bevel gear 505 drives the sleeve 506 to rotate. The sleeve 506 drives the plug shaft 201 to rotate through the slide groove 507 and the slide column 508, thereby rotating the unblocking needle 202 and unblocking the clogged nozzle 108.

[0056] like Figure 2 As shown, further, a fixing rod 604 is fixedly installed between the bottoms of two adjacent support platforms 100. In this configuration, the fixing rod 604 enables the multiple support platforms 100 to rotate together.

[0057] The implementation principle of the aluminum profile plasma spraying device of this embodiment is as follows: when in use, the paint enters the inner tube 101 through the delivery tube 102, enters the nozzle 108 through the inner nozzle 104 on the inner tube 101 and the outer nozzle 106 on the outer tube 105, and sprays the workpiece.

[0058] When the nozzle 108 in use is clogged, the paint cannot be sprayed out, causing the pressure in the inner tube 101 to increase. The pressure sensor 103 detects the increase in the pressure in the inner tube 101 to determine that it is clogged, and controls the servo motor 300 to rotate one circle through the PLC control board. During the process of the servo motor 300 rotating half a circle, the turntable 301 is driven to rotate. The turntable 301 drives the connecting plate 203 to move through the meshing of the tooth groove 305 and the first rack 306. The connecting plate 203 compresses while moving. Spring 206, at the same time, the connecting plate 203 moves to drive the plug shaft 201 and the unblocking needle 202 to move, and the unblocking needle 202 is separated from the nozzle 108, and at the same time, the connecting plate 203 moves and drives the blocking column 304 to move through the fixed block 303. When the turntable 301 rotates half a circle, the turntable 301 drives the arc-shaped baffle plate 302 to resist the blocking column 304. At this time, the unblocking needle 202 remains disengaged from the nozzle 108, and at the same time, the tooth groove 305 on the side of the turntable 301 disengages from the first rack 306.

[0059] During the first half of the rotation of the turntable 301, the turntable 301 drives the second rack 401 to move through the pull rod 402, the second rack 401 drives the first gear 403 to rotate through meshing, the first gear 403 drives the first pulley 407 to rotate through the rotating shaft 404, the first pulley 407 drives the second pulley 409 to rotate through the belt 408, and during the rotation of the second pulley 409, the clamping plate 411 inside it is deformed and staggered with the ratchet 412, so that the ratchet 412 does not rotate with the second pulley 409.

[0060] When the turntable 301 rotates the second half circle, the arc-shaped baffle plate 302 is still in a state of resisting the blocking column 304, that is, the unblocking needle 202 is still kept disengaged from the nozzle 108. At the same time, the turntable 301 drives the second rack 401 to make a movement opposite to the first half circle through the pull rod 402, so that the second pulley 409 rotates in the opposite direction. The second pulley 409 resists the ratchet 412 through the clamping plate 411 to drive the outer tube 105 to rotate. The rotation of the outer tube 105 drives the nozzle 108 on the side to rotate. The nozzle 108 is displaced relative to the outer tube 105 during the rotation process through the baffle rod 112, the inner ring 110 and the outer ring 111, so that the blocked nozzle 108 is separated from the outer tube 105, and the unblocked nozzle 108 is installed in a fit with the outer tube 105.

[0061] When the rotating disk 301 rotates a full circle, the nozzle 108 is replaced, and at the same time, the arc baffle 302 and the baffle column 304 are staggered, and the elastic force of the spring 206 drives the connecting plate 203 to move, and the dredging needle 202 is inserted into the blocked nozzle 108.

[0062] During the spraying process, the driving motor 601 continues to work and drives the disc 602 to rotate. The disc 602 drives the support platform 100 connected to it to rotate back and forth through the push rod 603. The support platform 100 drives the other support platforms 100 to rotate back and forth through the fixed rod 604 at the bottom, so that the nozzle 108 follows the movement to achieve uniform spraying of the workpiece. During the movement of the support platform 100, it drives the internal second gear 502 to move. The second gear 502 rotates by meshing with the arc rack 501, and drives the first bevel gear 504 to rotate through the connecting shaft 503. The first bevel gear 504 drives the second bevel gear 505 to rotate by meshing. The second bevel gear 505 drives the sleeve 506 to rotate. The sleeve 506 drives the plug shaft 201 to rotate through the slide groove 507 and the slide column 508, so that the dredging needle 202 rotates and the blocked nozzle 108 is dredged.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A plasma spraying device for aluminum profiles, comprising a support platform (100), characterized in that: A spraying unit is provided at one end of the support platform (100), the spraying unit comprising an inner tube (101), the top of the inner tube (101) being movably sleeved with an outer tube (105), both sides of the outer tube (105) being provided with outer nozzles (106), one side of the top of the inner tube (101) being provided with an inner nozzle (104), a pressure sensor (103) being installed at the top of the inner tube (101), a nozzle (108) being provided at the position of the outer nozzle (106), the spraying unit being used for plasma spraying the aluminum profile, and conveying the metal powder through the inner tube (101) and the outer tube (105); A dredging mechanism is arranged on the top of the support platform (100), the dredging mechanism comprising an insertion shaft (201), a dredging needle (202) being fixedly mounted on one end of the insertion shaft (201), the dredging needle (202) being aligned with the nozzle (108), and the dredging mechanism dredges the nozzle (108) through the dredging needle (202).

2. The aluminum profile plasma spraying device according to claim 1, characterized in that: The support platform (100) and its connecting components are provided in plurality and are distributed at equal intervals, and a support plate (500) is movably inserted between the plurality of support platforms (100), the support plate (500) is annular, a base (600) is fixedly mounted on one side of the support plate (500), a driving motor (601) is fixedly mounted on one side of the base (600), a disk (602) is fixedly mounted on the shaft end of the driving motor (601), a push rod (603) is rotatably connected to one side of the top of the disk (602), and the other end of the push rod (603) is rotatably connected to one end of one of the support platforms (100).

3. The aluminum profile plasma spraying device according to claim 2, characterized in that: The outer tube (105) is fixedly provided with an insertion rod (107) on both sides of the outer nozzle (106); sleeves (109) are fixedly provided on both sides of the nozzle (108); the nozzle (108) is movably sleeved on the insertion rod (107) through the sleeve (109); a blocking rod (112) is fixedly provided at the bottom of the nozzle (108); an inner sleeve ring (110) and an outer sleeve ring (111) are fixedly provided at the top of the support platform (100); a gap is provided between the inner sleeve ring (110) and the outer sleeve ring (111); the blocking rod (112) is movably connected to the gap between the inner sleeve ring (110) and the outer sleeve ring (111); the inner sleeve ring (110) and the outer sleeve ring (111) are concentrically provided; and the inner sleeve ring (110) is movably sleeved on the outside of the outer tube (105) in an eccentric state.

4. The aluminum profile plasma spraying device according to claim 3, characterized in that: The outer side of the plug shaft (201) is movably sleeved with a support block (200), the bottom of the support block (200) is fixedly mounted on the top of the support platform (100), the plug shaft (201) is rotatably connected to one end close to the dredging needle (202) with a connecting plate (203), the top of the connecting plate (203) is fixedly mounted with a slide bar (204), the slide bar (204) movably passes through the support block (200) and extends to the outside, the outer end of the slide bar (204) is fixedly mounted with a limit plate (205), the slide bar (204) is movably sleeved with a spring (206), and the two ends of the spring (206) are fixedly mounted between the support block (200) and the connecting plate (203).

5. The aluminum profile plasma spraying device according to claim 4, characterized in that: A servo motor (300) is fixedly mounted on the top of the support block (200), a turntable (301) is fixedly mounted on the shaft end of the servo motor (300), an arc-shaped baffle (302) is fixedly mounted on one side of the turntable (301), a fixed block (303) is fixedly mounted on the bottom of the connecting plate (203), a baffle column (304) is fixedly mounted on one side of the bottom of the fixed block (303), and the position of the baffle column (304) is aligned with the center position of the turntable (301).

6. The aluminum profile plasma spraying device according to claim 5, characterized in that: A tooth groove (305) is provided on the outer side of the turntable (301), and a first rack (306) is provided on the top of the turntable (301). The tooth shape of the first rack (306) is adapted to the tooth groove (305), one end of the first rack (306) is fixedly mounted on one side of the connecting plate (203), and the other end of the first rack (306) is slidably connected to one side of the supporting block (200).

7. The aluminum profile plasma spraying device according to claim 5, characterized in that: A fixed seat (400) is fixedly installed on the top of the support platform (100), and a second rack (401) is slidably connected to one side of the fixed seat (400), one end of the second rack (401) is rotatably connected to a pull rod (402), and the other end of the pull rod (402) is rotatably connected to one side of the turntable (301), and two fixed plates (405) are fixedly installed on the top of the fixed seat (400), a fixed cylinder (406) is installed between the two fixed plates (405), a rotating shaft (404) is rotatably connected inside the fixed cylinder (406), and a first gear (403) is fixedly installed on the bottom of the rotating shaft (404), and the first gear (403) and the second rack (401) are meshed with each other.

8. The aluminum profile plasma spraying device according to claim 7, characterized in that: A first pulley (407) is fixedly installed on the top of the rotating shaft (404), a belt (408) is movably connected to the outer side of the first pulley (407), the other end of the belt (408) is meshingly connected to a second pulley (409), an inner cavity (410) is opened inside the second pulley (409), a clamping plate (411) is fixedly installed on the side wall of the inner cavity (410), the second pulley (409) is located in the inner cavity (410) and is movably connected to a ratchet (412), the ratchet (412) is adapted to the clamping plate (411), and the ratchet (412) is fixedly sleeved on the outer side of the top of the outer tube (105).

9. The aluminum profile plasma spraying device according to claim 8, characterized in that: The insertion shaft (201) is movably sleeved with a sleeve (506) at one end away from the dredging needle (202), and slide grooves (507) are provided on both sides of the sleeve (506). The insertion shaft (201) is fixedly installed with a slide column (508) at the slide groove (507), and the slide column (508) is slidably connected in the slide groove (507). One end of the sleeve (506) is fixedly sleeved with a second bevel gear (505), and one end of the second bevel gear (505) is rotatably connected to one end of the support block (200).

10. The aluminum profile plasma spraying device according to claim 9, characterized in that: The bottom of the second bevel gear (505) is meshedly connected with the first bevel gear (504), and the bottom of the first bevel gear (504) is fixedly installed with a connecting shaft (503), and the bottom of the connecting shaft (503) movably passes through the support platform (100) and extends to the inside, and the connecting shaft (503) is located inside the support platform (100) and one end thereof is fixedly installed with a second gear (502), and a plurality of arc-shaped racks (501) are installed on the top of the support plate (500), and the arc-shaped racks (501) are meshed with the second gear (502).

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