A laser cladding device

Abstract

The present invention provides a laser cladding device, which belongs to the field of laser cladding technology. It includes an outer casing, a laser radiation module and a main nozzle. The laser radiation module is provided with six groups and is evenly fixed on the bottom of the outer casing. The laser radiation module has an inclination setting. The main nozzle is engaged with the bottom of the outer casing, and the output ends of the six groups of laser radiation modules are all located inside the main nozzle. The present invention selects a double-wire powder cladding method and a single-wire powder cladding method according to the type of substrate to be processed. The wire feeding device is used to transport the alloy wire into the main nozzle, and the powder injection module is used to spray metal powder onto the bottom of the alloy wire. Thereafter, the high-energy laser generated by the laser radiation module is used to melt the alloy wire and the metal powder, thereby forming a molten pool on the surface of the substrate. The molten pool is moved under the guidance of the laser to form a metallurgical bonding layer on the surface of the substrate, so as to solve the problem of the non-dense metallurgical layer formed by the existing laser cladding device.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cladding, and in particular to a laser cladding device. Background Art

[0002] Laser cladding is a surface modification technology that uses high-energy-density lasers to clad materials with special functions on low-cost base materials to achieve desired changes in the composition, organizational structure, and performance of the base materials.

[0003] Generally, fine metal powder is usually used as the cladding material in laser cladding operations. During the cladding process, sputtering occurs when the metal powder comes into contact with the high-energy laser, resulting in a waste of raw materials. At the same time, pores and cracks will be generated in the cladding layer, and a dense metallurgical layer cannot be formed on the substrate surface.

[0004] Therefore, the present application provides a laser cladding device to meet the needs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a laser cladding device, which selects a double-wire powder cladding method and a single-wire powder cladding method according to the type of substrate to be processed, uses a wire feeding device to convey the alloy wire into the main nozzle, and uses a powder injection module to spray metal powder onto the bottom of the alloy wire. Thereafter, a high-energy laser generated by a laser radiation module is used to melt the alloy wire and the metal powder, thereby forming a molten pool on the surface of the substrate. The molten pool is moved under the guidance of the laser to form a metallurgical bonding layer on the surface of the substrate, so as to solve the problem of the non-dense metallurgical layer formed by the existing laser cladding device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A laser cladding device comprises an outer housing, a laser radiation module and a main nozzle. The laser radiation modules are provided in six groups and are evenly fixedly mounted on the bottom of the outer housing. The laser radiation modules are arranged at an angle. The main nozzle is engaged with the bottom of the outer housing, and the output ends of the six groups of laser radiation modules are all located inside the main nozzle. A wire feeding device is provided on the inner wall of the middle portion of the outer housing. The wire feeding device is composed of two groups of guide wire assemblies, and the two groups of guide wire assemblies are symmetrically arranged. A cold wire assembly is provided at the bottom of the guide wire assembly located at the bottom.

[0008] The wire guide assembly includes a frame, which is fixedly connected to the inner wall of the outer shell, a main wire wheel is rotatably connected to the inner wall of the middle part of the frame, a sub-gear is rotatably connected to the outer wall of the frame, and the sub-gear is fixedly connected to the main wire wheel, a wire guide column is fixedly installed on the top of the frame, the top of the wire guide column passes through the outer shell, three groups of wire guide grooves are opened in the middle of the wire guide column, three groups of wire threading tubes are fixedly installed on the inner walls on both sides of the middle part of the frame, and the wire threading tubes pass through the frame, and the wire guide grooves are connected to the wire threading tubes in a one-to-one correspondence.

[0009] Optionally, the side wall of the frame is rotatably connected to a rotating frame, and the rotating frame can be engaged with the side wall of the frame. The inner wall of the rotating frame is rotatably connected to a secondary silk wheel, and the secondary silk wheel is used in conjunction with the main silk wheel. A limited hole is provided at the bottom of the frame, and the inner wall of the bottom of the rotating frame is rotatably connected to a force column, and the end of the force column is located in the limiting hole and is in active contact with the limiting hole. A spring column is fixedly installed on the front end wall of the force column, and the front end of the spring column is fixedly connected to the inner wall of the outer casing.

[0010] Optionally, the two groups of frame side walls are fixedly installed with the same connecting plate, the inner wall in the middle of the connecting plate is rotatably connected to a main gear, the main gear is engaged with both groups of sub-gears, the outer wall of the connecting plate is fixedly installed with a motor, and the output end of the motor is fixedly connected to the main gear.

[0011] Optionally, the cold wire assembly includes a cooling column, which is fixedly connected to the bottom of the frame, and a spiral groove is provided on the inner wall of the cooling column. Three groups of wire grooves are provided in the middle of the cooling column, and the wire grooves are connected to the wire threading tubes one by one. A liquid inlet pipe is fixedly installed on the bottom side wall of the cooling column, and the liquid inlet pipe is connected to the bottom of the spiral groove. A liquid transfer pipe is fixedly installed on the top side wall of the cooling column, and the liquid transfer pipe is connected to the top of the spiral groove. The other side walls of the two groups of frames are fixedly installed with the same cooling box, and multiple groups of cooling fins are alternately fixed to the inner walls on both sides of the cooling box. The other end of the liquid transfer pipe is sealed and connected to the bottom of the cooling box, and a liquid outlet pipe is fixedly installed on the top of the cooling box.

[0012] Optionally, a nozzle is fixedly mounted on the inner wall of the bottom of the outer casing, three groups of wire outlet grooves are provided on the inner wall in the middle of the nozzle head, the wire outlet grooves are connected to the wire feeding grooves one-to-one, a jet ring is provided on the inner wall of the nozzle head, an air intake pipe is fixedly mounted on the outer wall of the nozzle head, and the air intake pipe is sealed and connected to the jet ring, and the air intake pipe is externally connected to a mixture of argon and carbon dioxide.

[0013] Optionally, six groups of gas pipes are evenly and fixedly installed on the outer wall of the bottom of the outer casing, the gas pipes are set at an angle, and the gas pipes are externally connected to argon gas.

[0014] Optionally, a spiral cooling pipe is fixedly installed on the inner wall of the main nozzle, and a penetration groove is opened on the inner wall of the main nozzle. The penetration grooves are provided in six groups and are evenly distributed on the main nozzle. The slope of the penetration groove is the same as the slope of the main nozzle. The penetration groove passes through the main nozzle. A gasket strip and a powder injection module are inserted into the penetration groove, and the powder injection module is externally connected to metal powder.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above scheme, a wire feeding device is set up to transport the alloy wire to the bottom of the main nozzle, and a powder injection module is used to transport metal powder to the bottom of the alloy wire. After the high-energy laser melts the alloy wire, a larger molten pool can be formed at the bottom of the alloy wire. At this time, the metal powder is injected into the molten pool to effectively avoid the splashing of metal powder, thereby forming a dense metallurgical layer. At the same time, the alloy wire can also provide different physical properties for the surface of the substrate.

[0017] When performing double-wire powder cladding, after placing the substrate on the workbench, the pad and powder injection module are inserted into the insertion groove, and the powder injection module is located above the pad. After that, the two sets of gold wires are inserted into the wire guide grooves on both sides, and the alloy wires are guided to pass through the wire guide column, wire threading tube, cooling column and nozzle in turn. At the same time, the laser radiation module is adjusted so that the output laser end coincides with the bottom of the two sets of gold wires respectively. After that, coolant is input into the spiral cooling tube and the liquid inlet pipe, and (a mixture of argon and carbon dioxide) and argon are input into the air inlet pipe and the air delivery pipe in turn. At the same time, the motor is started to drive the main gear to engage with the two sets of sub-gears, thereby driving the two sets of main wire wheels to rotate, and cooperating with the two sets of sub-wire wheels to continuously transport the alloy wire downward. At this time, the laser can melt the metal powder and alloy wire ejected by the powder injection module, thereby forming a wider molten pool on the surface of the substrate. The molten pool moves under the guidance of the laser to form a metallurgical bonding layer on the surface of the substrate. This laser cladding method is suitable for processing workpieces with wide surfaces and thin metallurgical layers.

[0018] When performing single-wire powder cladding, after placing the substrate on the workbench, the powder injection module is located under the pad. At this time, the position of the metal powder sprayed by the powder injection module changes. Thereafter, the alloy wire is inserted into the wire guide groove in the middle, and the wire feeding device is driven by the motor to output the alloy wire. At the same time, the laser radiation module is adjusted so that the output laser end coincides with the bottom of the alloy wire. When the device is working, the laser can melt the metal powder and alloy wire sprayed by the powder injection module, thereby forming a narrow and high molten pool on the surface of the substrate (the shape of the bottom in the accompanying figure in the specification). The molten pool moves under the guidance of the laser to form a metallurgical bonding layer on the surface of the substrate. This laser cladding method is suitable for processing workpieces with narrow surfaces and thick metallurgical layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a laser cladding device;

[0021] Figure 2 A bottom view of the three-dimensional structure of a laser cladding device;

[0022] Figure 3 This is the installation diagram of the main nozzle and the outer casing;

[0023] Figure 4 This is a schematic diagram of the installation position of the jet head;

[0024] Figure 5 This is the installation diagram of each component on the main nozzle;

[0025] Figure 6 This is a schematic diagram of the installation of the spiral cooling pipe in the main nozzle;

[0026] Figure 7 This is a diagram of the installation positions of the six laser radiation module output terminals and the nozzles;

[0027] Figure 8 It is a schematic diagram of the structure inside the outer casing;

[0028] Figure 9 This is a schematic diagram of the installation of the air jet head and cold wire assembly;

[0029] Figure 10 This is a schematic diagram of the installation of the outer casing and the wire-moving device;

[0030] Figure 11 This is a schematic diagram of the installation of the wire feeding device, cold wire assembly and air jet head;

[0031] Figure 12 This is a schematic diagram of the installation structure of the nozzle and the intake pipe;

[0032] Figure 13 is a cross-sectional view of the jet head;

[0033] Figure 14 It is a structural schematic diagram of the cold wire assembly;

[0034] Figure 15 It is a plan view of the cold wire assembly;

[0035] Figure 16 This is the installation position diagram of the cooling column and guide wire assembly;

[0036] Figure 17 Schematic diagram of the internal structure of the cooling column;

[0037] Figure 18 is the position relationship diagram of the secondary gear and the main gear;

[0038] Figure 19 This is an assembly diagram of two sets of guidewire components;

[0039] Figure 20 Schematic diagram of the structure of the guidewire assembly;

[0040] Figure 21 This is the installation structure diagram of the turntable and the rack;

[0041] Figure 22 It is a structural diagram of each component on the rack;

[0042] Figure 23 It is a structural diagram of each component on the turntable;

[0043] Figure 24 This is a front view of the wire-moving device;

[0044] Figure 25 It is a top view of the wire-moving device;

[0045] Figure 26 This is the principle diagram of double-wire powder cladding;

[0046] Figure 27 This is the principle diagram of single-filament powder cladding;

[0047] Figure 28 for Figure 26 Enlarged view of point A in the middle;

[0048] Figure 29 for Figure 27 Enlarged view of point B in the middle.

[0049] Reference numerals:

[0050] Outer casing 100, wire feeding device 110, connecting plate 111, main gear 112, motor 113, wire guide assembly 120, frame 121, main wire wheel 122, limiting hole 123, wire guide column 124, wire guide groove 125, wire threading tube 126, auxiliary gear 127, rotating frame 130, auxiliary wire wheel 131, force column 132, spring column 133, cold wire assembly 140, cooling column 141, screw Spiral groove 142, wire groove 143, liquid inlet pipe 144, liquid transfer pipe 145, cooling box 146, cooling fin 147, liquid outlet pipe 148, nozzle 150, wire outlet groove 151, nozzle ring 152, air inlet pipe 153, air delivery pipe 160, laser radiation module 200, main nozzle 300, spiral cooling pipe 310, penetration groove 320, pad 330, powder injection module 340.

[0051] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0052] The following describes a laser cladding device provided by the present invention in detail with reference to the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are optimal and preferred embodiments, and those skilled in the art may employ alternative methods for implementing certain known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0053] like Figures 1 to 29 As shown, an embodiment of the present invention provides a laser cladding device, comprising an outer housing 100, a laser radiation module 200 and a main nozzle 300. Six groups of laser radiation modules 200 are provided and are evenly fixedly installed on the bottom of the outer housing 100. The laser radiation modules 200 are set at an angle. The main nozzle 300 is engaged with the bottom of the outer housing 100, and the output ends of the six groups of laser radiation modules 200 are all located inside the main nozzle 300. A wire walking device 110 is provided on the inner wall of the middle part of the outer housing 100. The wire walking device 110 is assembled from two groups of guide wire assemblies 120, and the two groups of guide wire assemblies 120 are symmetrically arranged. A cold wire assembly 140 is provided at the bottom of the guide wire assembly 120 located at the bottom.

[0054] The wire guide assembly 120 includes a frame 121, which is fixedly connected to the inner wall of the outer casing 100. The main wire wheel 122 is rotatably connected to the inner wall of the middle part of the frame 121, and the sub-gear 127 is rotatably connected to the outer wall of the frame 121, and the sub-gear 127 is fixedly connected to the main wire wheel 122. A wire guide column 124 is fixedly installed on the top of the top frame 121. The top of the wire guide column 124 passes through the outer casing 100. Three groups of wire guide grooves 125 are opened in the middle of the wire guide column 124. Three groups of wire threading tubes 126 are fixedly installed on the inner walls on both sides of the middle of the frame 121, and the wire threading tubes 126 pass through the frame 121. The wire guide grooves 125 are connected to the wire threading tubes 126 in a one-to-one manner, and the alloy wire passing through the wire guide grooves 125 can enter the corresponding wire threading tubes 126.

[0055] The side wall of the frame 121 is rotatably connected to the rotating frame 130, and the rotating frame 130 can be engaged with the side wall of the frame 121. The inner wall of the rotating frame 130 is rotatably connected to the auxiliary wire wheel 131, and the auxiliary wire wheel 131 is used in conjunction with the main wire wheel 122. The alloy wire can pass through the gap between the auxiliary wire wheel 131 and the main wire wheel 122. When the main wire wheel 122 rotates, it can play the role of inputting the alloy wire under the action of friction. A limited hole 123 is provided at the bottom of the frame 121, and a force column 132 is rotatably connected to the inner wall of the bottom of the rotating frame 130. The end of the force column 132 is located in the limited hole 123, and The force column 132 is in active contact with the limiting hole 123, and the force column 132 can move slightly in the limiting hole 123. A spring column 133 is fixedly installed on the front end wall of the force column 132, and the front end of the spring column 133 is fixedly connected to the inner wall of the outer shell 100. The spring column 133 can apply pressure to the force column 132. In the present invention, when the alloy wire passes through between the secondary wire wheel 131 and the main wire wheel 122, pressure can be applied to the secondary wire wheel 131, thereby pushing the rotating frame 130 outward, causing the spring column 133 to deform. Under the reaction force of the spring column, the secondary wire wheel 131 can press the alloy wire.

[0056] The same connecting plate 111 is fixedly installed on the side walls of the two groups of frames 121, and the main gear 112 is rotatably connected to the inner wall of the middle part of the connecting plate 111. The main gear 112 is engaged with the two groups of sub-gears 127. The outer wall of the connecting plate 111 is fixedly installed with a motor 113, and the output end of the motor 113 is fixedly connected to the main gear 112. In the present invention, starting the motor 113 drives the main gear 112 to engage with the two groups of sub-gears 127, thereby driving the two groups of main wire wheels 122 to rotate, and cooperating with the two groups of sub-wire wheels 131 to continuously transport the alloy wire downward.

[0057] As an implementation method in this embodiment, Figures 14 to 17As shown, the cold wire assembly 140 includes a cooling column 141, the cooling column 141 is fixedly connected to the bottom of the frame 121, a spiral groove 142 is provided on the inner wall of the cooling column 141, and three sets of wire grooves 143 are provided in the middle of the cooling column 141. The wire grooves 143 are connected to the wire tube 126 in a one-to-one correspondence. The alloy wire passed through the wire tube 126 can enter the wire groove 143. A liquid inlet pipe 144 is fixedly installed on the bottom side wall of the cooling column 141, and the liquid inlet pipe 144 is connected to the bottom of the spiral groove 142. A liquid transfer pipe 145 is fixedly installed on the top side wall of the cooling column 141, and the liquid transfer pipe 145 is connected to the top of the spiral groove 142. The coolant flows into the spiral groove 142 from the liquid inlet pipe 144, and then is transferred to the liquid transfer pipe 145. The tube 145 flows into the cooling box 146 for cooling, which can cool the alloy wire to prevent it from melting prematurely. The other side wall of the two sets of racks 121 is fixedly installed with the same cooling box 146. The inner walls on both sides of the cooling box 146 are alternately fixed with multiple sets of cooling fins 147. The cooling fins 147 can cool the coolant. The other end of the liquid transfer tube 145 is sealed and connected to the bottom of the cooling box 146. A liquid outlet pipe 148 is fixedly installed on the top of the cooling box 146. In the present invention, when the device is working, the coolant is input into the liquid inlet pipe 144 to flow through the spiral groove 142, thereby cooling the alloy wire in the cooling column 141 to prevent the alloy wire from melting before it comes into contact with the laser.

[0058] As an implementation method in this embodiment, Figures 11 to 13 As shown, a nozzle 150 is fixedly mounted on the inner wall at the bottom of the outer casing 100, and the outer casing 100 supports the nozzle 150. Three groups of wire outlet slots 151 are provided on the inner wall in the middle of the nozzle head 150. The wire outlet slots 151 are connected to the wire feeding slots 143 one by one, and the alloy wire passing through the wire feeding slots 143 can enter the corresponding wire outlet slots 151. A nozzle ring 152 is provided on the inner wall of the nozzle head 150, and the nozzle ring 152 is set at an angle. An air inlet pipe 153 is fixedly mounted on the outer wall of the nozzle head 150, and the air inlet pipe 153 is sealed and connected to the nozzle ring 152. The air inlet pipe 153 is externally connected to a mixed gas of argon and carbon dioxide. In the present invention, the mixed gas of argon and carbon dioxide is used as a shielding gas for the alloy wire, which can improve the welding performance, effectively prevent the weld from oxidation, and ensure the welding quality. It is suitable for occasions with high requirements on weld quality and the need to reduce costs.

[0059] As an implementation method in this embodiment, Figures 1 to 5 As shown, six groups of gas pipes 160 are evenly fixedly installed on the outer wall of the bottom of the outer casing 100. The gas pipes 160 are set at an angle. The gas pipes 160 are externally connected to argon gas. In the present invention, the argon gas output by the gas pipes 160 can be used as laser shielding gas. It is not easy to ionize and can effectively suppress the formation of plasma cloud, thereby improving the effective utilization rate of the laser and ensuring the stability of the welding process.

[0060] As an implementation method in this embodiment, Figure 5 and Figure 6 As shown, a spiral cooling pipe 310 is fixedly installed on the inner wall of the main nozzle 300. The main nozzle 300 can be cooled by passing coolant into the spiral cooling pipe 310. A penetration groove 320 is opened on the inner wall of the main nozzle 300. There are six groups of penetration grooves 320, which are evenly distributed on the main nozzle 300. The slope of the penetration groove 320 is the same as that of the main nozzle 300. The penetration groove 320 runs through the main nozzle 300. A pad 330 and a powder injection module 340 are inserted into the penetration groove 320. By changing the pad 330 and the powder injection module The position of group 340 can change the position where the powder injection module 340 sprays metal powder. The powder injection module 340 is externally connected to the metal powder. A single-cylinder carrier gas powder feeder and an air path are provided in the powder injection module 340. The single-cylinder carrier gas powder feeder transports 316L stainless steel powder to the outside of the main nozzle 300 through pipelines and air paths. In the present invention, the user selects different processing methods (double-wire powder cladding method and single-wire powder cladding method) according to the substrate to be processed, thereby changing the installation position of the powder injection module 340 and the cushion strip 330.

[0061] The working principle of the technical solution provided by the present invention is as follows: when performing double-wire powder cladding, refer to the attached manual. Figure 28 The working steps are as follows: after placing the substrate on the workbench, insert the pad 330 and the powder injection module 340 into the insertion groove 320, and make the powder injection module 340 be above the pad 330, then insert the two sets of gold wires into the wire guide grooves 125 on both sides, and guide the alloy wires to pass through the wire guide column 124, the wire threading tube 126, the cooling column 141 and the nozzle 150 in sequence, and at the same time adjust the laser radiation module 200 so that the output laser end coincides with the bottom of the two sets of gold wires respectively, and then send the spiral cooling tube 126 to the cooling tube 150. 310 and the liquid inlet pipe 144 input coolant, and the air inlet pipe 153 and the air delivery pipe 160 input (argon and carbon dioxide mixture) and argon gas in turn, at the same time start the motor 113 to drive the main gear 112 and the two sets of sub-gears 127 to engage, thereby driving the two sets of main wire wheels 122 to rotate, and cooperate with the two sets of sub-wire wheels 131 to continuously transport the alloy wire downward, at this time the laser can melt the metal powder and alloy wire ejected by the powder injection module 340, thereby forming a wide molten pool on the surface of the substrate (see the attached manual). Figure 28 The molten pool moves under the guidance of the laser to form a metallurgical bonding layer on the surface of the substrate. This laser cladding method is suitable for processing workpieces with wide surfaces and thin metallurgical layers.

[0062] When performing single-filament powder cladding, refer to the instructions for Figure 29The working steps are as follows: after placing the substrate on the workbench, the powder injection module 340 is positioned below the pad 330. At this time, the position of the metal powder ejected by the powder injection module 340 changes. Thereafter, the alloy wire is inserted into the middle wire guide groove 125, and the wire feeding device 110 is driven by the motor 113 to output the alloy wire. At the same time, the laser radiation module 200 is adjusted so that the output laser end coincides with the bottom of the alloy wire. When the device is working, the laser can melt the metal powder and alloy wire ejected by the powder injection module 340, thereby forming a narrow and high molten pool on the surface of the substrate (see the attached manual). Figure 29 The molten pool moves under the guidance of the laser to form a metallurgical bonding layer on the surface of the substrate. This laser cladding method is suitable for processing workpieces with narrow surfaces and thick metallurgical layers.

[0063] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A laser cladding device, comprising an outer housing (100), a laser radiation module (200) and a main nozzle (300), characterized in that: The laser radiation modules (200) are provided in six groups and are evenly fixedly installed on the bottom of the outer housing (100). The laser radiation modules (200) are provided with an inclination setting. The main nozzle (300) is engaged with the bottom of the outer housing (100), and the output ends of the six groups of laser radiation modules (200) are all located inside the main nozzle (300). A wire walking device (110) is provided on the inner wall of the middle part of the outer housing (100). The wire walking device (110) is composed of two groups of guide wire assemblies (120) assembled together, and the two groups of guide wire assemblies (120) are symmetrically arranged. A cold wire assembly (140) is provided at the bottom of the guide wire assembly (120) located at the bottom. The wire guide assembly (120) includes a frame (121), the frame (121) is fixedly connected to the inner wall of the outer housing (100), the inner wall of the middle part of the frame (121) is rotatably connected to a main wire wheel (122), the outer wall of the frame (121) is rotatably connected to a sub-gear (127), and the sub-gear (127) is fixedly connected to the main wire wheel (122), the top of the frame (121) is fixedly installed with a wire guide column (124), the top of the wire guide column (124) passes through the outer housing (100), and three groups of wire guide grooves (125) are opened in the middle of the wire guide column (124), three groups of wire threading tubes (126) are fixedly installed on the inner walls on both sides of the middle part of the frame (121), and the wire threading tubes (126) pass through the frame (121), and the wire guide grooves (125) are connected to the wire threading tubes (126) in a one-to-one correspondence; The side wall of the frame (121) is rotatably connected to a rotating frame (130), and the rotating frame (130) can be engaged with the side wall of the frame (121). The inner wall of the rotating frame (130) is rotatably connected to a secondary wire wheel (131), and the secondary wire wheel (131) is used in conjunction with the main wire wheel (122). A limited hole (123) is provided at the bottom of the frame (121). The inner wall of the bottom of the rotating frame (130) is rotatably connected to a force column (132), and the end of the force column (132) is located in the limited hole (123) and is in active contact with the limited hole (123). A spring column (133) is fixedly installed on the front end wall of the force column (132), and the front end of the spring column (133) is fixedly connected to the inner wall of the outer casing (100); the cold wire assembly (140) includes a cooling column (141), and the cooling column (141) is fixedly connected to the bottom of the frame (121). A spiral groove (142) is provided on the inner wall of the cooling column (141), and three groups of wire grooves (143) are provided in the middle of the cooling column (141), and the wire grooves (143) are connected to the wire threading tube (126) in a one-to-one correspondence. A liquid inlet pipe (144) is fixedly installed on the bottom side wall of the cooling column (141), and the liquid inlet pipe (144) is connected to the bottom of the spiral groove (142). A liquid transfer pipe (145) is fixedly installed on the top side wall of the cooling column (141), and the liquid transfer pipe (145) is connected to the top of the spiral groove (142). The other side walls of the two groups of the racks (121) are fixedly installed with the same cooling box (146), and multiple groups of cooling fins (147) are alternately fixed to the inner walls on both sides of the cooling box (146). The other end of the liquid transfer pipe (145) is sealed and connected to the bottom of the cooling box (146), and a liquid outlet pipe (148) is fixedly installed on the top of the cooling box (146).

2. A laser cladding device according to claim 1, characterized in that: The side walls of the two sets of frames (121) are fixedly mounted with a same connecting plate (111), the inner wall of the middle portion of the connecting plate (111) is rotatably connected to a main gear (112), the main gear (112) is meshed with both sets of sub-gears (127), and the outer wall of the connecting plate (111) is fixedly mounted with a motor (113), and the output end of the motor (113) is fixedly connected to the main gear (112).

3. The laser cladding device according to claim 1, characterized in that: A nozzle (150) is fixedly mounted on the inner wall of the bottom of the outer housing (100), three groups of wire outlet grooves (151) are provided on the inner wall of the middle portion of the nozzle head (150), the wire outlet grooves (151) are connected to the wire feeding grooves (143) in a one-to-one correspondence, an injection ring (152) is provided on the inner wall of the nozzle head (150), an air intake pipe (153) is fixedly mounted on the outer wall of the nozzle head (150), and the air intake pipe (153) is sealed and connected to the injection ring (152), and the air intake pipe (153) is externally connected to a mixed gas of argon and carbon dioxide.

4. The laser cladding device according to claim 1, characterized in that: Six groups of gas pipes (160) are evenly and fixedly installed on the outer wall of the bottom of the outer casing (100), and the gas pipes (160) are arranged at an inclination. The gas pipes (160) are externally connected to argon gas.

5. The laser cladding device according to claim 1, characterized in that: A spiral cooling pipe (310) is fixedly installed on the inner wall of the main nozzle (300), and a penetration groove (320) is opened on the inner wall of the main nozzle (300). The penetration grooves (320) are provided in six groups and are evenly distributed on the main nozzle (300). The inclination of the penetration grooves (320) is the same as that of the main nozzle (300). The penetration grooves (320) pass through the main nozzle (300). A pad (330) and a powder injection module (340) are inserted into the penetration grooves (320), and the powder injection module (340) is externally connected to metal powder.

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