Tungsten rod and transition material cladding device

Abstract

The utility model discloses a tungsten rod and transition material cladding device, and relates to the field of laser cladding device application. The tungsten rod and transition material cladding device comprises a laser generator, the laser generator is installed at the end of a multi-axis mechanical arm, a metal spray head is arranged at the bottom of the laser generator, and a condensation pipe is arranged outside the metal spray head; the condensation pipe is spirally distributed outside the metal spray head in a conical shape, the condensation pipe and the outer wall of the metal spray head are partially embedded, one end of the condensation pipe is provided with a water inlet connector, the other end of the condensation pipe is connected with a water outlet connector, and a cooling system is connected between the water inlet connector and the water outlet connector through a pipeline. The condenser pipe surrounds the surface of the metal nozzle, and heat accumulation of the metal nozzle can be reduced in a water cooling or oil cooling mode, so that the purpose of reducing the temperature of the metal nozzle is achieved, and the situation that the metal nozzle works for a long time in a high-temperature environment, and the service life is shortened is avoided.

Description

Technical Field

[0001] This utility model relates to the application field of laser cladding devices, specifically a cladding device for tungsten rods and transition materials. Background Technology

[0002] Laser cladding equipment is a device that uses laser technology to repair or strengthen surfaces. Its working principle is to focus a high-power laser beam onto the surface of the workpiece, melting the surface material, and simultaneously feeding metal powder or wire into the molten pool to form a uniform alloy layer or coating. This process can significantly improve the surface properties of the workpiece, such as wear resistance, corrosion resistance, and oxidation resistance.

[0003] Laser cladding can give workpieces different properties depending on the type of metal powder introduced. When using tungsten rods or tungsten powder to clad the surface of metal workpieces, it is usually to improve the high-temperature resistance of the metal workpieces. Tungsten metal has very high high-temperature resistance, with a melting point of 3422℃. Therefore, using tungsten rods or tungsten powder for cladding can also cause great damage to the laser cladding device. The metal head of the cladding device will have a shortened service life due to prolonged high-temperature operation. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a cladding device for tungsten rods and transition materials to solve the technical problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A cladding device for tungsten rods and transition materials includes a laser generator, which is installed at the end of a multi-axis robotic arm. A metal nozzle is provided at the bottom of the laser generator, and a condenser tube is provided on the outside of the metal nozzle. The condenser tube is distributed in a conical spiral outside the metal nozzle, and the condenser tube and the outer wall of the metal nozzle are partially fitted together. One end of the condenser tube is provided with a water inlet connector, and the other end of the condenser tube is connected to a water outlet connector. A cooling system is connected between the water inlet connector and the water outlet connector through a pipe.

[0006] By adopting the above technical solution, by surrounding the surface of the metal nozzle with a condenser tube and using water cooling or oil cooling, the heat accumulation of the metal nozzle can be reduced, thereby achieving the purpose of lowering the temperature of the metal nozzle and avoiding its long-term operation in a high-temperature environment, thus shortening its service life.

[0007] The present invention is further configured such that a boss is provided on the side of the metal nozzle, and the water inlet connector and the water outlet connector are distributed on the top of the boss.

[0008] Preferably, the two ends of the condenser tube are positioned on the top of the boss to facilitate the connection of the inlet and outlet water connectors to the cooling system.

[0009] The present invention is further configured such that a mounting bracket is provided on the side of the laser generator, and a piston assembly is mounted on the side of the mounting bracket.

[0010] Preferably, the piston assembly is fixed by a mounting bracket on the side of the laser generator, so that the piston assembly moves synchronously when the laser generator is controlled to move by a multi-axis robotic arm.

[0011] The present invention is further configured such that the piston assembly includes a sleeve connected to the mounting bracket, and a connecting rod is movably mounted inside the sleeve, with a piston head disposed at the top of the connecting rod inside the sleeve.

[0012] Preferably, the height of the colored protective cover is adjusted by using a piston assembly and controlling the extension and retraction of the piston assembly by injecting coolant through a cooling system.

[0013] The present invention is further configured such that the size of the piston head matches the inner wall diameter of the sleeve, and multiple sets of sealing rings are provided on the side of the piston head.

[0014] Preferably, the sealing performance of the piston assembly can be improved by setting multiple sets of sealing rings on the side of the piston head, and the injection of coolant into the piston assembly can also cool the piston assembly and prevent the piston assembly from aging and being damaged by working in a high-temperature environment for a long time.

[0015] The present invention is further configured such that the piston assembly is provided in two sets, and the two sets of piston assemblies are respectively installed at both ends of the mounting frame, and the two sets of piston assemblies are symmetrically arranged about the mounting frame.

[0016] Preferably, the height of the colored protective cover is adjusted by setting two sets of piston assemblies, which makes the installation of the colored protective cover more stable.

[0017] The present invention is further configured such that the top of the boss is provided with two sets of circular holes, the two sets of connecting rods and the two sets of circular holes are arranged through each other, and the diameter of the two sets of circular holes is larger than the diameter of the connecting rods.

[0018] Preferably, by opening two sets of circular holes with a diameter approximately equal to the diameter of the connecting rod on the top of the boss, the movement of the connecting rod will not be interfered with.

[0019] The present invention is further configured such that a colored protective cover is installed at the bottom of the connecting rod, and the colored protective cover is fitted over the outside of the metal nozzle. The colored protective cover is made of a high-temperature resistant material that can filter strong light.

[0020] Preferably, by setting up a colored protective cover, such as a black protective cover with a light transmittance of 50%, strong light can be filtered, reducing the damage of strong light to the eyes of workers.

[0021] The present invention is further configured such that a tungsten powder feed pipe is provided on the top of the boss, one end of the tungsten powder feed pipe extends into the interior of the metal nozzle, and the other end of the tungsten powder feed pipe is connected to a tungsten powder conveying system.

[0022] Preferably, by setting up a tungsten powder feed pipe, tungsten powder can be introduced into a metal nozzle to participate in the cladding reaction.

[0023] The present invention is further configured such that an alloy powder feed pipe is provided on the top of the boss, one end of the alloy powder feed pipe extends into the interior of the metal nozzle, and the other end of the alloy powder feed pipe is connected to an alloy powder conveying system.

[0024] Preferably, by setting up an alloy powder feed pipe, the alloy powder can be fed into the metal nozzle to participate in the cladding reaction.

[0025] In summary, the present invention has the following main advantages:

[0026] 1. This utility model reduces the accumulation of heat in the metal nozzle by surrounding the surface of the metal nozzle with a condenser tube and using water or oil cooling, thereby lowering the temperature of the metal nozzle and preventing it from working for a long time in a high-temperature environment, thus shortening its service life.

[0027] 2. This utility model uses two sets of piston assemblies to drive the colored protective cover to rise and fall. When the laser cladding device is working, the cooling system will be activated at the same time. The cooling system circulates and pushes the coolant into the condenser tube, while also pushing part of the condenser tube into the piston assembly. Then the piston assembly extends and drives the colored protective cover to fall and cover the space where the metal nozzle is working. The colored protective cover can reduce the damage of the powerful laser to the workers' eyes, and the colored protective cover can reduce the splashing of sparks and molten slag. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram showing the distribution of the metal nozzle, boss, and piston assembly of this utility model;

[0030] Figure 3 This is a schematic diagram showing the distribution of the metal nozzle, boss, and condenser tube of this utility model;

[0031] Figure 4 This is a schematic diagram showing the distribution of the colored protective cover and piston assembly of this utility model;

[0032] Figure 5 This is a schematic diagram of the internal structure of the piston assembly of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Laser generator; 2. Metal nozzle; 3. Boss; 4. Condenser tube; 5. Water inlet connector; 6. Water outlet connector; 7. Tungsten powder feed pipe; 8. Alloy powder feed pipe; 9. Mounting bracket; 10. Piston assembly; 1001. Sleeve; 1002. Connecting rod; 1003. Piston head; 1004. Sealing ring; 11. Round hole; 12. Colored protective cover. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of this utility model will be described below based on its overall structure.

[0037] Please see Figure 1 - Figure 5 A cladding device for tungsten rods and transition materials includes a laser generator 1, which is mounted at the end of a multi-axis robotic arm. A metal nozzle 2 is located at the bottom of the laser generator 1, and a condenser tube 4 is located outside the metal nozzle 2. The condenser tube 4 is distributed in a conical spiral outside the metal nozzle 2. The coolant flowing inside the condenser tube 4 can be used to cool the metal nozzle 2, thereby reducing the risk of damage caused by prolonged operation at high temperatures. The condenser tube 4 is partially fitted into the outer wall of the metal nozzle 2. One end of the condenser tube 4 is provided with a water inlet connector 5, and the other end of the condenser tube 4 is connected to a water outlet connector 6. A cooling system is connected between the water inlet connector 5 and the water outlet connector 6 through a pipe. The cooling system includes a circulation device and a cooling device.

[0038] Please refer to the above embodiments for further details. Figure 2 The metal nozzle 2 has a boss 3 on its side. The water inlet connector 5 and the water outlet connector 6 are located on the top of the boss 3. The two ends of the condenser pipe 4 are located on the top of the boss 3 so that the water inlet connector 5 and the water outlet connector 6 can be connected to the cooling system.

[0039] Please refer to the above embodiments for further details. Figure 2 The laser generator 1 has a mounting bracket 9 on its side, and a piston assembly 10 is mounted on the side of the mounting bracket 9. By fixing the piston assembly 10 by setting the mounting bracket 9 on the side of the laser generator 1, the piston assembly 10 will move synchronously when the laser generator 1 is controlled to move by the multi-axis robotic arm.

[0040] Please refer to the above embodiments for further details. Figure 5The piston assembly 10 includes a sleeve 1001 connected to the mounting bracket 9, and a connecting rod 1002 is movably installed inside the sleeve 1001. The top of the connecting rod 1002 is located inside the sleeve 1001 and a piston head 1003 is provided. By setting the piston assembly 10, the extension and retraction of the piston assembly 10 is controlled by injecting coolant through the cooling system, thereby adjusting the height of the colored protective cover 12.

[0041] Please refer to the above embodiments for further details. Figure 5 The size of the piston head 1003 matches the inner wall diameter of the sleeve 1001, and multiple sets of sealing rings 1004 are provided on the side of the piston head 1003. By providing multiple sets of sealing rings 1004 on the piston head 1003, the sealing performance of the piston assembly 10 can be improved. In addition, the injection of coolant into the piston assembly 10 can also cool the piston assembly 10 and prevent the piston assembly 10 from aging and being damaged by working in a high-temperature environment for a long time.

[0042] Please refer to the above embodiments for further details. Figure 2 Two sets of piston assemblies 10 are provided, and the two sets of piston assemblies 10 are respectively installed at both ends of the mounting frame 9. The two sets of piston assemblies 10 are symmetrically arranged about the mounting frame 9. By setting two sets of piston assemblies 10, the height of the colored protective cover 12 can be adjusted, making the installation of the colored protective cover 12 more stable.

[0043] Please refer to the above embodiments for further details. Figure 3 The top of the boss 3 has two sets of round holes 11, through which two sets of connecting rods 1002 and two sets of round holes 11 are provided. The diameter of the two sets of round holes 11 is larger than the diameter of the connecting rods 1002. By opening two sets of round holes 11 with a diameter approximately equal to the diameter of the connecting rods 1002 on the top of the boss 3, the movement of the connecting rods 1002 will not be interfered with.

[0044] Please refer to the above embodiments for further details. Figure 1 and Figure 4 Two sets of connecting rods 1002 are equipped with colored protective covers 12 at their bottoms, and the colored protective covers 12 are fitted over the metal nozzle 2. The colored protective covers 12 are made of high-temperature resistant material and can filter strong light. By setting colored protective covers 12, such as black protective covers with a light transmittance of 50%, strong light can be filtered, reducing the damage of strong light to the eyes of workers, and reducing molten slag splashing.

[0045] Please refer to the above embodiments for further details. Figure 2 The top of the boss 3 is provided with a tungsten powder feed pipe 7. One end of the tungsten powder feed pipe 7 extends into the interior of the metal nozzle 2, and the other end of the tungsten powder feed pipe 7 is connected to a tungsten powder conveying system. By setting the tungsten powder feed pipe 7, tungsten powder can be introduced into the metal nozzle 2 to participate in the cladding reaction.

[0046] Please refer to the above embodiments for further details. Figure 2 The top of the boss 3 is provided with an alloy powder feed pipe 8. One end of the alloy powder feed pipe 8 extends into the interior of the metal nozzle 2, and the other end of the alloy powder feed pipe 8 is connected to an alloy powder conveying system. By setting the alloy powder feed pipe 8, alloy powder can be fed into the metal nozzle 2 to participate in the cladding reaction.

[0047] In practical operation, the laser cladding device of this application is installed at the end of a multi-axis robotic arm. By controlling the robotic arm to adjust the position and angle of the laser cladding device, the surface of the metal workpiece is clad.

[0048] During operation, the laser generator 1 is activated to generate a high-frequency laser beam that is emitted from the metal nozzle 2. At the same time, the tungsten powder conveying system, the alloy powder conveying system, and the cooling system are activated. The tungsten powder conveying system delivers tungsten powder into the metal nozzle 2 in a certain proportion, and the alloy powder conveying system delivers various alloy powders into the metal nozzle 2. The specific proportion is determined according to the properties that the metal workpiece needs to be coated. The high-frequency laser heats and melts the tungsten powder and alloy powder, and at the same time melts local parts of the metal workpiece, so that the surface of the metal workpiece, the tungsten metal, and various alloys are melted together to form a protective layer.

[0049] The cooling system includes a coolant circulation device and a cooling device. For example, the circulation device uses a pressure pump to deliver coolant from the inlet connector 5 into the condenser tube 4. The condenser tube 4 then absorbs the heat from the metal nozzle 2. The coolant then returns to the cooling system from the outlet connector 6. The cooling device is used to cool the coolant. When the circulation device is working, it injects a portion of coolant into the sleeve 1001, which in turn pushes the piston head 1003 down. When the piston head 1003 down, it drives the connecting rod 1002 down, thereby the two sets of connecting rods 1002 push the colored protective cover 12 to lower its height, so that the colored protective cover 12 can cover the working area of ​​the metal nozzle 2.

[0050] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A cladding apparatus for tungsten rods and transition materials, comprising a laser generator (1), characterized in that: The laser generator (1) is installed at the end of the multi-axis robotic arm, and a metal nozzle (2) is provided at the bottom of the laser generator (1). A condenser tube (4) is provided on the outside of the metal nozzle (2). The condenser tube (4) is distributed in a conical spiral on the outside of the metal nozzle (2). The condenser tube (4) and the outer wall of the metal nozzle (2) are partially fitted together. A water inlet connector (5) is provided at one end of the condenser tube (4), and a water outlet connector (6) is connected to the other end of the condenser tube (4). A cooling system is connected between the water inlet connector (5) and the water outlet connector (6) through a pipe.

2. The cladding device for tungsten rods and transition materials according to claim 1, characterized in that: The metal nozzle (2) has a boss (3) on its side, and the water inlet connector (5) and water outlet connector (6) are located on the top of the boss (3).

3. The cladding device for tungsten rods and transition material according to claim 2, characterized in that: The laser generator (1) has a mounting bracket (9) on its side, and a piston assembly (10) is mounted on the side of the mounting bracket (9).

4. The cladding device for tungsten rods and transition materials according to claim 3, characterized in that: The piston assembly (10) includes a sleeve (1001) connected to the mounting bracket (9), and a connecting rod (1002) is movably mounted inside the sleeve (1001). The top of the connecting rod (1002) is located inside the sleeve (1001) and a piston head (1003) is provided.

5. The cladding device for tungsten rods and transition material according to claim 4, characterized in that: The size of the piston head (1003) matches the inner wall diameter of the sleeve (1001), and multiple sets of sealing rings (1004) are provided on the side of the piston head (1003).

6. The cladding apparatus for tungsten rods and transition material according to claim 5, characterized in that: The piston assembly (10) is provided in two sets, and the two sets of piston assemblies (10) are respectively installed at both ends of the mounting frame (9), and the two sets of piston assemblies (10) are symmetrically arranged about the mounting frame (9).

7. The cladding apparatus for tungsten rods and transition material according to claim 6, characterized in that: The top of the boss (3) is provided with two sets of round holes (11), and the two sets of connecting rods (1002) and the two sets of round holes (11) are connected through each other, and the diameter of the two sets of round holes (11) is larger than the diameter of the connecting rods (1002).

8. The cladding apparatus for tungsten rods and transition material according to claim 7, characterized in that: The bottom of the two sets of connecting rods (1002) is equipped with a colored protective cover (12), and the colored protective cover (12) is fitted on the outside of the metal nozzle (2). The colored protective cover (12) is made of high temperature resistant material and can filter strong light.

9. The cladding apparatus for tungsten rods and transition materials according to claim 8, characterized in that: The top of the boss (3) is provided with a tungsten powder feed pipe (7), one end of which extends into the interior of the metal nozzle (2), and the other end of which is connected to a tungsten powder conveying system.

10. The cladding apparatus for tungsten rods and transition materials according to claim 9, characterized in that: The top of the boss (3) is provided with an alloy powder feed pipe (8), one end of which extends into the interior of the metal nozzle (2), and the other end of which is connected to an alloy powder conveying system.

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