Electric arc spraying machine

Abstract

The utility model discloses an electric arc spraying machine, and relates to the technical field of thermal spraying. The device comprises a shell, an air inducing bin is formed in the shell, a conical exhaust outlet communicating with the air inducing bin is formed in one end of the shell, one end of the shell is in threaded connection with an air guiding pipe communicating with the air inducing bin, mounting bins communicating with the air inducing bin are symmetrically formed in one end of the shell, and mounting rollers are rotationally connected to the interiors of the mounting bins; and a metal wire coil fixedly sleeves one end of the metal wire coil. Positive and negative currents are provided for the two metal wire coils through the electrodes correspondingly, so that the two metal wire coils form a short circuit, high-temperature melting is generated, meanwhile, air blows molten metal liquid of the metal wire coils to be sprayed to the surface of a workpiece, and meanwhile the flow dividing plate is used in cooperation with the air guiding opening and the air guiding plate; part of air guided into the air inducing bin through the air guiding pipe is sprayed to the surfaces of the heat dissipation fins, and therefore heat exchange cooling is achieved through the air and the heat dissipation fins.

Description

Technical Field

[0001] This application relates to the field of thermal spraying technology, and particularly to an arc spraying machine. Background Art

[0002] As an efficient, energy-saving, and flexible-operating thermal spraying device, the arc spraying machine has been widely used in recent years in fields such as anti-corrosion, repair, and enhancing the surface properties of materials. It uses an arc as the heat source to melt metal wire and spray it onto the workpiece surface at a high speed, forming a firm and dense coating, thereby improving the wear resistance, corrosion resistance, etc. of the workpiece.

[0003] The basic principle of the arc spraying machine is to use two continuously fed metal wires as consumable electrodes, generating an arc at their ends as the heat source. When the two metal wires come into contact due to feeding, a short circuit occurs and an arc is generated, instantly melting the ends of the wires. Subsequently, the molten metal is atomized by compressed air and sprayed onto the workpiece surface at a high speed, forming a uniform coating.

[0004] Existing arc spraying machines often have a sturdy housing to ensure the continuity and stability of the spraying operation. This design aims to confine the spraying process within a relatively enclosed environment inside the housing. However, although this design meets the requirements of spraying stability to a certain extent, the enclosed working environment greatly restricts air circulation, resulting in difficulty in effectively discharging the heat generated during the spraying process. As a result, heat accumulates inside the machine body, leading to a temperature rise and affecting the use effect of the device. Summary of the Utility Model

[0005] The purpose of this application is to provide an arc spraying machine to solve the problem that the enclosed working environment greatly restricts air circulation, resulting in difficulty in effectively discharging the heat generated during the spraying process, and thus heat accumulates inside the machine body, leading to a temperature rise and affecting the use effect of the device.

[0006] To achieve the above purpose, this application specifically adopts the following technical solutions:

[0007] Arc spraying machine, including a housing, an air guiding chamber is provided inside the housing, and a conical exhaust port communicating with the air guiding chamber is provided at one end of the housing. A duct is threadedly connected to one end of the housing and communicates with the air guiding chamber. Installation chambers communicating with the air guiding chamber are symmetrically provided at one end of the housing. An installation roller is rotatably connected inside the installation chamber. A metal wire coil is fixedly sleeved at one end of the installation roller. Driving rollers are symmetrically and rotatably connected inside the air guiding chamber, and pressing rollers are symmetrically and rotatably connected inside the air guiding chamber. One end of the metal wire coil passes through the air guiding chamber and extends into the conical exhaust port, and one end of the metal wire coil passes between the driving roller and the pressing roller. Electrodes are symmetrically and fixedly connected inside the air guiding chamber. One end of the metal wire coil is in contact and fit with the electrode. Air guiding openings are symmetrically provided inside the air guiding chamber. Flow dividing plates adapted to the air guiding openings are symmetrically and fixedly connected inside the air guiding chamber. Air guiding plates adapted to the air guiding openings are symmetrically and fixedly connected to one end of the housing. A plurality of heat dissipation fins are symmetrically and evenly fixedly connected to one end of the housing. A driving component for driving the driving roller to rotate is installed at one end of the housing. A bending component for guiding two metal wire coils to approach each other inside the conical exhaust port is installed inside the air guiding chamber.

[0008] By adopting the above technical solution, through the combined use of the bending component and the driving component, it is convenient to input pressurized air into the air guiding chamber through an external air supply pump connected to the duct, and use the electrodes to respectively provide positive and negative currents to the two metal wire coils, so that the two metal wire coils form a short circuit and generate high temperature and melt. At the same time, by pulling one end of the metal wire coil around the guiding roller and extending it into the air guiding chamber, the air blows the molten metal liquid of the metal wire coil onto the surface of the workpiece. At the same time, by using the combined use of the flow dividing plate, the air guiding opening and the air guiding plate, part of the air introduced into the air guiding chamber through the duct is sprayed onto the surface of the heat dissipation fins, so as to realize heat exchange and cooling with the air and the heat dissipation fins, thereby effectively reducing the heat accumulation inside the air guiding chamber, improving the heat dissipation effect on the surface of the housing, and reducing the influence of high temperature on the use effect of the device.

[0009] Furthermore, the driving component includes a driving motor fixedly connected to one side of the housing. The output end of the driving motor is fixedly connected to one driving roller. One ends of the two driving rollers pass through the housing and are fixedly connected with driving gears. The two driving gears are meshed with each other.

[0010] By adopting the above technical solution, through the combined use of the driving roller and the driving gear, starting the driving motor can drive one driving roller to drive the two driving gears to mesh, thereby driving the two driving rollers to rotate synchronously and reversely, and realizing synchronous feeding of the two metal wire coils, improving the practicability of the device.

[0011] Further, the bending assembly includes bending rollers symmetrically and rotatably connected to the inner side of the air induction bin. Bending plates are symmetrically and fixedly connected to the inner side of the conical air outlet. One end of the wire coil passes between the bending roller and the bending plate.

[0012] By adopting the above technical solution, through the combined use of the bending roller and the bending plate, it is convenient to guide and bend the wire coil passing between the driving roller and the pressing roller. After the wire coil abuts against one side of the bending plate, it bends with the bending roller as the center, so as to facilitate guiding the two bending rollers to move closer to each other with the two bending rollers as the centers respectively, improving the practicability of the device.

[0013] Further, the bending plate is arranged as an insulating ceramic block.

[0014] By adopting the above technical solution, by arranging the bending plate and the insulating ceramic block, the heat resistance and insulation of the bending plate are effectively improved, and the service life of the device is prolonged.

[0015] Further, limit rings are symmetrically and fixedly connected to one end of the pressing roller, and one end of the wire coil is installed between the two limit rings.

[0016] By adopting the above technical solution, when the wire coil is pulled through between the driving roller and the pressing roller, one end of the wire coil is inserted between the two limit rings, so as to facilitate the formation of a limit on one end of the wire coil by the limit rings, effectively reducing the situation that the wire coil disengages from between the driving roller and the pressing roller.

[0017] Further, guiding rollers are symmetrically and rotatably connected to one end of the air induction bin. One end of the wire coil passes through the installation bin, bypasses the guiding roller, and extends into the air induction bin.

[0018] By adopting the above technical solution, through the combined use of the guiding roller and the wire coil, when the wire coil is pulled through the installation bin and extends into the air induction bin, one end of the wire coil bends around the guiding roller, so that the wire coil forms a rolling contact with the guiding roller, thereby effectively reducing the wear of the wire coil and improving the practicability of the device.

[0019] Further, a synchronous bin is opened inside the housing. One end of the installation roller passes through the housing and extends into the synchronous bin. And a synchronous wheel is fixedly connected to the end of the installation roller extending into the synchronous bin. A synchronous belt is sleeved on one end of the two synchronous wheels.

[0020] By adopting the above technical solution, through the combined use of the driving component and the wire coil, it is convenient to utilize the cooperation of the synchronous pulley and the synchronous belt to drive the two mounting rollers to rotate synchronously, thereby driving the two mounting rollers to unwind the wire coil synchronously, further improving the practicability of the device.

[0021] Furthermore, an internal thread groove is formed inside the mounting bin, and a threaded cover is threadedly connected to the inside of the mounting bin through the internal thread groove, and the wire coil is installed inside the threaded cover.

[0022] By adopting the above technical solution, through the combined use of the threaded cover and the internal thread groove, it is convenient to release the threaded connection with the mounting bin by loosening the threaded cover, thereby facilitating the replacement of the wire coil and effectively improving the practicability of the device.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. By the combined use of the bending component and the driving component, it is convenient to input pressurized air into the air suction bin through an external air supply pump connected to the air duct, and use electrodes to provide positive and negative currents to the two wire coils respectively, so that the two wire coils form a short circuit and generate high temperature and melt. At the same time, by pulling one end of the wire coil around the guiding roller and extending it into the air suction bin, the air blows the molten metal liquid of the wire coil onto the surface of the workpiece. At the same time, by using the combined use of the flow dividing plate, the air duct opening and the air guiding plate, part of the air introduced into the air suction bin through the air duct is sprayed onto the surface of the heat dissipation fins, thereby realizing heat exchange and cooling by using the air and the heat dissipation fins, further effectively reducing the heat accumulation inside the air suction bin, improving the heat dissipation effect on the surface of the housing, and reducing the influence of high temperature on the use effect of the device.

[0025] 2. By the combined use of the driving roller and the driving gear, starting the driving motor can drive one driving roller to drive two driving gears to engage, thereby driving the two driving rollers to rotate synchronously in opposite directions and realizing synchronous feeding of the two wire coils, improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the device main body in the present application.

[0027] Figure 2 is an internal structural schematic diagram of the air suction bin in the present application.

[0028] Figure 3 is an internal structural schematic diagram of the synchronous bin in the present application.

[0029] Description of the reference numerals:

[0030] 1. Housing; 2. Air induction chamber; 3. Conical air outlet; 4. Air duct; 5. Installation chamber; 6. Installation roller; 7. Metal wire coil; 8. Driving roller; 9. Pressing roller; 10. Electrode; 11. Air guide port; 12. Flow dividing plate; 13. Air guide plate; 14. Heat dissipation fins; 15. Driving motor; 16. Driving gear; 17. Bending roller; 18. Bending plate; 19. Limit ring; 20. Guide roller; 21. Synchronization chamber; 22. Synchronization pulley; 23. Synchronization belt; 24. Internal thread groove; 25. Thread cover. Specific embodiments

[0031] The following will further elaborate on this application in conjunction with the attached Figures 1-3 drawings.

[0032] An arc spraying machine is disclosed in an embodiment of this application.

[0033] Referring to Figures 1-3 , the arc spraying machine includes a housing 1. An air induction chamber 2 is provided inside the housing 1, and a conical air outlet 3 communicating with the air induction chamber 2 is provided at one end of the housing 1. An air duct 4 communicating with the air induction chamber 2 is threadedly connected to one end of the housing 1. Installation chambers 5 communicating with the air induction chamber 2 are symmetrically provided at one end of the housing 1. An installation roller 6 is rotatably connected inside the installation chamber 5. A metal wire coil 7 is fixedly sleeved at one end of the installation roller 6. Driving rollers 8 are symmetrically rotatably connected inside the air induction chamber 2, and pressing rollers 9 are symmetrically rotatably connected inside the air induction chamber 2. One end of the metal wire coil 7 extends through the air induction chamber 2 into the conical air outlet 3, and one end of the metal wire coil 7 passes between the driving roller 8 and the pressing roller 9. Electrodes 10 are symmetrically fixedly connected inside the air induction chamber 2. One end of the metal wire coil 7 is in contact and fit with the electrodes 10. Air guide ports 11 are symmetrically provided inside the air induction chamber 2. Flow dividing plates 12 adapted to the air guide ports 11 are symmetrically fixedly connected inside the air induction chamber 2. Air guide plates 13 adapted to the air guide ports 11 are symmetrically fixedly connected to one end of the housing 1. A plurality of heat dissipation fins 14 are symmetrically and evenly fixedly connected to one end of the housing 1. A driving assembly for driving the driving roller 8 to rotate is installed at one end of the housing 1. A bending assembly for guiding the two metal wire coils 7 to approach each other inside the conical air outlet 3 is installed inside the air induction chamber 2;

[0034] Among them, the driving assembly includes a driving motor 15 fixedly connected to one side of the housing 1. The output end of the driving motor 15 is fixedly connected to one driving roller 8. One ends of the two driving rollers 8 pass through the housing 1 and are fixedly connected with driving gears 16. The two driving gears 16 are meshed with each other;

[0035] Moreover, the bending assembly includes bending rollers 17 symmetrically rotatably connected inside the air induction chamber 2. Bending plates 18 are symmetrically fixedly connected inside the conical air outlet 3. One end of the metal wire coil 7 passes between the bending roller 17 and the bending plate 18;

[0036] Moreover, the bending plate 18 is provided as an insulating ceramic block;

[0037] Moreover, one end of the pressing roller 9 is symmetrically and fixedly connected with a limiting ring 19, and one end of the wire coil 7 is installed between the two limiting rings 19;

[0038] Moreover, one end of the air induction bin 2 is symmetrically and rotatably connected with a guiding roller 20, and one end of the wire coil 7 passes through the installation bin 5, bypasses the guiding roller 20, and extends into the interior of the air induction bin 2.

[0039] During use, first, one end of the wire coil 7 is pulled to bypass the guiding roller 20 and extend into the interior of the air induction bin 2, reducing the friction generated between the wire coil 7 and the inner wall of the air induction bin 2. At the same time, one end of the wire coil 7 is pulled to pass between the driving roller 8 and the pressing roller 9, and the wire coil 7 is limited by the two limiting rings 19, reducing the situation where the wire coil 7 disengages from between the driving roller 8 and the pressing roller 9. Then, one end of the wire coil 7 passes between the bending roller 17 and the bending plate 18, and bends along one side of the driving roller 8 into the interior of the conical air outlet 3;

[0040] Then, an air supply pump is externally connected through the air duct 4, and at the same time, the electrode 10 is externally connected to a generator, so that the electrode 10 provides positive and negative currents for the two wire coils 7 respectively, causing the two wire coils 7 to form a short circuit and generating high temperature for melting. Then, the driving motor 15 is started to drive one driving roller 8 to drive the two driving gears 16 to engage, thereby driving the two driving rollers 8 to rotate synchronously and in opposite directions. At the same time, the pressing roller 9 is coordinated to push the wire coil 7 to pass between the bending roller 17 and the driving roller 8, and move along the guiding direction of the driving roller 8 into the interior of the conical air outlet 3;

[0041] Next, the air supply pump is started to cooperate with the air duct 4 to input pressurized air into the interior of the air induction bin 2, so that the air passes through the conical air outlet 3 along the inner wall of the air induction bin 2, so that the air blows the molten metal liquid of the wire coil 7 onto the surface of the workpiece. At the same time, part of the air introduced into the interior of the air induction bin 2 by the air duct 4 hits one side of the flow dividing plate 12 and then enters the interior of the air guiding port 11. Then, after the air passes through the interior of the air guiding port 11, it is sprayed onto the surface of the heat dissipation fins 14 along the guiding direction of the air guiding plate 13, so as to realize heat exchange and cooling by using the air and the heat dissipation fins 14. Furthermore, the situation of heat accumulation inside the air induction bin 2 is effectively reduced, the heat dissipation effect on the surface of the housing 1 is improved, and the influence of high temperature on the use effect of the device is reduced.

[0042] Refer to Figures 1-3 , a synchronous bin 21 is opened inside the housing 1, one end of the installation roller 6 passes through the housing 1 and extends into the interior of the synchronous bin 21, and one end of the installation roller 6 extending into the interior of the synchronous bin 21 is fixedly connected with a synchronous wheel 22, and a synchronous belt 23 is sleeved on one end of the two synchronous wheels 22.

[0043] During use, when the driving component is started to drive the driving roller 8 to convey the wire coil 7 into the interior of the conical air outlet 3, the wire coil 7 drives the mounting roller 6 to rotate. At the same time, the mounting roller 6 drives the synchronous pulley 22 to rotate, and the two synchronous pulleys 22 drive the two mounting rollers 6 to rotate synchronously by means of the synchronous belt 23, so that the two mounting rollers 6 unwind the wire coil 7 synchronously, further improving the practicability of the device.

[0044] Refer to Figure 1 and Figure 2 , an internal thread groove 24 is provided inside the mounting bin 5, and a threaded cover 25 is threadedly connected to the inside of the mounting bin 5 through the internal thread groove 24. The wire coil 7 is installed inside the threaded cover 25.

[0045] During use, by loosening the threaded cover 25, the threaded connection between the threaded cover 25 and the internal thread groove 24 is released, so that the threaded cover 25 is disengaged from the inside of the mounting bin 5, thereby facilitating the replacement of the wire coil 7 and effectively improving the practicability of the device.

[0046] The implementation principle of the arc spraying machine in this embodiment is as follows: First, one end of the wire coil 7 is pulled around the guiding roller 20 and passed through between the driving roller 8 and the pressing roller 9, then passed through between the bending roller 17 and the bending plate 18, and bent along one side of the driving roller 8 into the interior of the conical air outlet 3;

[0047] Then, the electrodes 10 are externally connected to a generator to provide positive and negative currents for the two wire coils 7 respectively, so that the two wire coils 7 form a short circuit and generate high temperature melting. Then, air is blown into the interior of the air guiding bin 2 through the air duct 4 externally connected to an air supply pump, so that the air blows the melted wire coil 7 onto the surface of the workpiece;

[0048] Then, by starting the driving motor 15 to drive one driving roller 8 to drive the two driving gears 16 to mesh, thereby driving the two driving rollers 8 to rotate synchronously in opposite directions. At the same time, in cooperation with the pressing roller 9, the wire coil 7 is pushed through between the bending roller 17 and the driving roller 8 and moves along the guiding direction of the driving roller 8 into the interior of the conical air outlet 3;

[0049] At the same time, the flow dividing plate 12 is used to guide part of the air introduced into the interior of the air guiding bin 2 through the air duct 4 into the interior of the air guiding port 11, and spray it onto the surface of the heat dissipation fins 14 along the guiding direction of the air guiding plate 13, so as to realize heat exchange and cooling by using the air and the heat dissipation fins 14.

Claims

1. An arc spraying machine, comprising a housing (1), characterized in that: An air induction bin (2) is provided inside the shell (1), and one end of the shell (1) is provided with a conical air outlet (3) connected to the air induction bin (2), one end of the shell (1) is threadedly connected to an air guide duct (4) connected to the air induction bin (2), and one end of the shell (1) is symmetrically provided with a mounting bin (5) connected to the air induction bin (2), the mounting bin (5) is rotatably connected to a mounting roller (6), one end of the mounting roller (6) is fixedly sleeved with a metal wire roll (7), the interior of the air induction bin (2) is symmetrically rotatably connected to a driving roller (8), and the interior of the air induction bin (2) is symmetrically rotatably connected to a pressing roller (9), one end of the metal wire roll (7) passes through the air induction bin (2) and extends to the interior of the conical air outlet (3), and one end of the metal wire roll (7) passes through the driving roller (8) and is fixedly sleeved with a metal wire roll (7), The inside of the air induced chamber (2) is symmetrically fixedly connected with an electrode (10) between the roller (8) and the pressing roller (9), one end of the metal wire roll (7) is in contact with the electrode (10), the inside of the air induced chamber (2) is symmetrically provided with an air guide port (11), the inside of the air induced chamber (2) is symmetrically fixedly connected with a diverter plate (12) adapted to the air guide port (11), one end of the shell (1) is symmetrically fixedly connected with an air guide plate (13) adapted to the air guide port (11), one end of the shell (1) is symmetrically and evenly fixedly connected with a plurality of heat dissipation fins (14), one end of the shell (1) is installed with a driving component for driving the driving roller (8) to rotate, and the inside of the air induced chamber (2) is installed with a bending component for guiding the two metal wire rolls (7) to move closer to the inside of the conical exhaust port (3).

2. The arc spraying machine according to claim 1, characterized in that: The drive assembly comprises a drive motor (15) fixedly connected to one side of the housing (1); an output end of the drive motor (15) is fixedly connected to a drive roller (8); one end of two drive rollers (8) passes through the housing (1) and is fixedly connected to a drive gear (16); the two drive gears (16) are meshed with each other.

3. The arc spraying machine according to claim 1, characterized in that: The bending assembly comprises a bending roller (17) symmetrically rotatably connected to the inner side of the induced draft bin (2); a bending plate (18) is symmetrically fixedly connected to the inner side of the conical air outlet (3); and one end of the metal wire roll (7) passes between the bending roller (17) and the bending plate (18).

4. The arc spraying machine according to claim 3, characterized in that: The bent plate (18) is configured as an insulating ceramic block.

5. The arc spraying machine according to claim 1, characterized in that: One end of the lamination roller (9) is symmetrically fixedly connected to a limit ring (19), and one end of the metal wire roll (7) is installed between the two limit rings (19).

6. The arc spraying machine according to claim 1, characterized in that: One end of the induced draft bin (2) is symmetrically rotatably connected to a guide roller (20), and one end of the metal wire roll (7) passes through the installation bin (5), bypasses the guide roller (20), and extends to the interior of the induced draft bin (2).

7. The arc spraying machine according to claim 1, characterized in that: A synchronous chamber (21) is provided inside the housing (1), one end of the installation roller (6) passes through the housing (1) and extends into the interior of the synchronous chamber (21), and one end of the installation roller (6) extending into the interior of the synchronous chamber (21) is fixedly connected to a synchronous wheel (22), and one end of the two synchronous wheels (22) is sleeved with a synchronous belt (23).

8. The arc spraying machine according to claim 1, characterized in that: An internal thread groove (24) is provided inside the installation bin (5), a thread cover (25) is threadedly connected to the inside of the installation bin (5) via the internal thread groove (24), and the metal wire coil (7) is installed inside the thread cover (25).

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