Laser cladding nozzle and handheld laser cladding device

Abstract

The invention belongs to the technical field of laser cladding equipment, and discloses a laser cladding nozzle and a handheld laser cladding device.The laser cladding nozzle comprises a protective inner core internally provided with a light transmission cavity, a connecting cylinder is coaxially and fixedly connected to the inner wall of the protective inner core, and a plurality of feeding channels are formed in the connecting cylinder at equal intervals; outlets of the multiple feeding channels are arranged around an outlet of the light transmission cavity, the multiple air supply channels are arranged in the connecting cylinder at equal intervals, outlets of the multiple air supply channels are arranged around an outlet of the light transmission cavity, and the air supply channels and the feeding channels are correspondingly arranged and are in one-way communication through communication assemblies. The protective cover is fixedly connected and coaxially arranged on the outer wall of the connecting cylinder in a sleeving mode and arranged at the outlet end of the connecting cylinder in a covering mode, and a protective cavity communicating with the air supply channel is formed in the protective cover. The handheld laser cladding device is compact in structure and convenient to use, blockage in the powder supply process can be effectively prevented, the welding quality is improved, the performance and stability of the laser cladding nozzle are improved, and powerful guarantee is provided for the overall operation efficiency and cladding quality of the handheld laser cladding device.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cladding equipment, and particularly relates to a laser cladding nozzle and a handheld laser cladding device. Background Art

[0002] Laser cladding technology has occupied a pivotal position in the field of material processing due to its significant advantages such as high precision, high efficiency, and environmental friendliness. The handheld laser cladding device, as a flexible and convenient implementation means of laser cladding technology, has increasingly attracted attention and favor in the industry.

[0003] The laser cladding nozzle is the core component in the handheld laser cladding device and has a decisive impact on the cladding effect and powder utilization rate. Most of the current cladding equipment on the market adopts a coaxial cladding design, that is, the laser beam is located at the axis of the nozzle, and the flow channels for powder materials and inert gases surround the laser beam. However, the powder is prone to absorb water and agglomerate when exposed to air, seriously interfering with the stable supply of the powder inside the nozzle, which may lead to the interruption of the processing process or the decline of the operation quality. More troublesome is that once the powder channel is blocked, its cleaning work is extremely cumbersome, significantly increasing the maintenance difficulty and cost of the equipment. In addition, when the laser beam emitted from the nozzle melts the surface of the workpiece into a molten pool, the molten pool is extremely prone to oxidation reaction with oxygen in the surrounding environment, thus having an adverse impact on the welding quality. At the same time, the splashed welding slag during the cladding process is easy to adhere to the surface of the space, not only damaging the appearance quality of the workpiece but also potentially interfering with the subsequent processing process.

[0004] Therefore, the present application designs a laser cladding nozzle and a handheld laser cladding device to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a laser cladding nozzle and a handheld laser cladding device to solve the problems existing in the prior art.

[0006] To achieve the above purpose, the present invention provides the following solutions: The present invention provides a laser cladding nozzle, including:

[0007] A protective inner core, coaxially penetrating through the protective inner core is a light passing cavity for the laser to pass through;

[0008] A connecting cylinder, the connecting cylinder is coaxially fixedly connected to the inner wall of the protective inner core, and the laser for cladding is emitted from the bottom end of the connecting cylinder;

[0009] A plurality of feeding channels, the plurality of feeding channels are equally spaced in the connecting cylinder, and the outlets of the plurality of feeding channels are arranged around the outlet of the light passing cavity;

[0010] A plurality of air supply channels are equidistantly arranged in the connecting cylinder. The outlets of the plurality of air supply channels are arranged around the outlet of the light transmission cavity. The air supply channels are correspondingly arranged with the material supply channels and are unidirectionally communicated through a communication component;

[0011] A protective cover is fixedly sleeved coaxially on the outer wall of the connecting cylinder and covers the outlet end of the connecting cylinder. A protective cavity communicated with the air supply channels is arranged in the protective cover.

[0012] Preferably, a material supply ring is sleeved on the outer wall of the connecting cylinder. A material supply cavity communicated with the outside is arranged in the material supply ring. The plurality of material supply channels are respectively communicated with the material supply cavity; The powder for laser cladding enters the material supply cavity through a material supply joint.

[0013] Preferably, an air supply ring is sleeved outside the connecting cylinder. An air supply cavity communicated with the outside is opened in the air supply ring. The plurality of air supply channels are respectively communicated with the air supply cavity. The protective gas from the outside is introduced into the air supply cavity through an air supply joint.

[0014] Preferably, the communication component includes a plurality of connecting channels connected between the air supply channels and the material supply channels. A partition plate is hermetically and slidably connected in the connecting channel. A limiting telescopic rod is fixedly connected between the partition plate and the material supply channel. A return spring in a stretched state is sleeved outside the limiting telescopic rod. Two ends of the return spring are respectively fixedly connected and communicated with the partition plate and the material supply channel.

[0015] Preferably, a receiving groove corresponding to the partition plate is opened on one side of the connecting channel facing the material supply channel. The partition plate is hermetically and slidably connected in the receiving groove. When the connecting channel is disconnected, the partition plate hermetically abuts against the bottom end of the receiving groove.

[0016] Preferably, the protective cavity is annularly arranged in the protective cover. A plurality of air curtain spray holes are axially and equidistantly arranged in the inner cavity of the protective cover. The air curtain spray holes are communicated with the protective cavity to form a protective air curtain in the protective cover.

[0017] Preferably, a plurality of connecting blocks are arranged inside the protective cover. The connecting blocks are inserted into connecting grooves on the connecting cylinder. A first transfer channel in the connecting block is correspondingly arranged and hermetically communicated with a second transfer channel arranged in the connecting cylinder.

[0018] The present invention also discloses a handheld laser cladding device, including a main body. A light source component for providing cladding laser is provided on the main body. The laser cladding nozzle is detachably connected to the light source component. The laser emitted by the light source component is emitted from the axial position of the light transmission cavity;

[0019] On both sides of the main body, a gas supply module and a feeding module are respectively arranged. The gas supply module is communicated with the gas supply channel, and the feeding module is communicated with the feeding channel.

[0020] A control module is arranged on the main body, and the control module is electrically connected with the light source assembly, the gas supply module and the feeding module respectively.

[0021] Preferably, the light source assembly includes a connection shell arranged on the main body, and the protective inner core is detachably connected to the connection shell; a light source module electrically connected with the control module is arranged in the connection shell, and the light source module is arranged corresponding to the protective inner core.

[0022] Preferably, the light source module includes a fixed shell fixedly connected in the connection shell. A laser light source is arranged in the fixed shell, and the laser emitted by the laser light source enters the light passing cavity after passing through a focusing lens slidably arranged in the fixed shell.

[0023] Compared with the prior art, the present invention has the following advantages and technical effects: The present invention discloses a laser cladding nozzle and a hand-held laser cladding device, which effectively solve the problems existing in the existing laser cladding nozzles, such as powder exposure and caking, difficult cleaning and maintenance of the powder channel, and oxidation of the molten pool and splash of welding slag. By designing the protective inner core and the connection cylinder, and arranging the feeding channel and the gas supply channel at equal intervals in the connection cylinder, the coaxial supply of powder and inert gas is realized, but the powder is not directly exposed to the air, effectively avoiding the problem of water absorption and caking of the powder caused by direct exposure to the air, thereby ensuring the stable supply of the powder inside the nozzle, reducing the risk of interruption of the processing flow and decline of the operation quality. Multiple feeding channels and multiple gas supply channels are arranged at equal intervals and corresponding to each other, which can avoid welding interruption caused by blockage of a single channel and ensure the stability of welding. The feeding channel and the gas supply channel are unidirectionally communicated through a communication component. When the powder blocks the feeding channel, the pressure of the feeding channel rises, and the communication component is unidirectionally opened, so that the protective gas enters the high-pressure feeding channel from the high-pressure gas supply channel, and then through the combined action of the communication component and the high-pressure gas, the caked powder is crushed and discharged, realizing the automatic cleaning of the feeding channel. The cleaning work may be more convenient, thereby reducing the maintenance difficulty and cost of the equipment. The protective cover is coaxially sleeved on the outer wall of the connection cylinder and covers the outlet end of the connection cylinder. A protective cavity communicated with the gas supply channel is arranged inside the protective cover, and an inert gas layer can be formed to effectively isolate the oxygen in the molten pool and the surrounding environment, prevent the oxidation of the molten pool, and thus improve the welding quality. At the same time, the protective cover may also play a certain role in blocking the splashing welding slag, reducing the adhesion of the welding slag to the surface of the space, protecting the appearance quality of the workpiece, and reducing the potential interference with the subsequent processing flow.

[0024] The structure of the present invention is compact and easy to use, which can effectively prevent blockage during the powder supply process, improve the welding quality, enhance the performance and stability of the laser cladding nozzle, and also provide a strong guarantee for the overall operation efficiency and cladding quality of the handheld laser cladding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0026] Figure 1 is an axonometric view of the laser cladding nozzle of the present invention;

[0027] Figure 2 is a schematic structural view of the laser cladding nozzle of the present invention;

[0028] Figure 3 is for the present invention Figure 2 a partial enlarged view of A therein;

[0029] Figure 4 is for the present invention Figure 2 a partial enlarged view of C therein;

[0030] Figure 5 is for the present invention Figure 2 a partial enlarged view of D therein;

[0031] Figure 6 is an axonometric view of the handheld laser cladding device in the second embodiment of the present invention;

[0032] Figure 7 is a top view of the handheld laser cladding device in the second embodiment of the present invention;

[0033] Figure 8 is a schematic structural view of the light source assembly of the present invention;

[0034] Figure 9 is for the present invention Figure 7 a partial enlarged view of D therein;

[0035] In the figure: 1, protective inner core; 2, connecting cylinder; 3, protective cover; 4, body; 11, light passing cavity; 12, threaded section; 21, feeding channel; 22, air supply channel; 23, feeding ring; 24, feeding cavity; 25, feeding joint; 26, air supply ring; 27, air supply cavity; 28, air supply joint; 29, connecting channel; 210, isolation plate; 211, limit telescopic rod; 212, return spring; 213, accommodation groove; 214, connecting groove; 215, second transfer channel; 31, protection cavity; 32, air curtain spray hole; 33, connecting block; 34, first transfer channel; 41, connecting shell; 42, fixed shell; 43, laser light source; 44, focusing lens; 45, adjustment groove; 46, adjustment screw; 47, adjustment motor; 48, first installation box; 49, second installation box; 410, pressing plate; 411, sliding rod; 412, locking rod; 413, feeding container; 414, air supply container; 415, handle; 416, operation button; 417, control module. Detailed implementation mode

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation modes.

[0038] Embodiment 1

[0039] Refer to Figure 1 - Figure 5 As shown in the figure, this embodiment provides a laser cladding nozzle, including:

[0040] A protective inner core 1, and a light passing cavity 11 for the laser to pass through is coaxially penetrated in the protective inner core 1;

[0041] A connecting cylinder 2, the connecting cylinder 2 is coaxially fixedly connected to the inner wall of the protective inner core 1, and the laser for cladding is emitted from the bottom end of the connecting cylinder 2;

[0042] A plurality of feeding channels 21, the plurality of feeding channels 21 are equally spaced in the connecting cylinder 2, and the outlets of the plurality of feeding channels 21 are arranged around the outlet of the light passing cavity 11;

[0043] A plurality of gas supply channels 22 are arranged in the connecting cylinder 2 at equal intervals. The outlets of the plurality of gas supply channels 22 are arranged around the outlet of the light passing cavity 11. The gas supply channels 22 are correspondingly arranged with the material supply channels 21 and are unidirectionally communicated through a communicating component;

[0044] A protective cover 3 is fixedly sleeved coaxially on the outer wall of the connecting cylinder 2 and covers the outlet end of the connecting cylinder 2. A protective cavity 31 communicated with the gas supply channel 22 is arranged in the protective cover 3.

[0045] The present invention discloses a laser cladding nozzle and a handheld laser cladding device, which effectively solve the problems existing in the existing laser cladding nozzles, such as powder exposure and caking, difficult cleaning and maintenance of the powder channel, and oxidation of the molten pool and spatter of welding slag. By designing the protective inner core 1 and the connecting cylinder 2, and arranging the material supply channels 21 and the gas supply channels 22 at equal intervals in the connecting cylinder 2, the coaxial supply of the powder and the inert gas is realized, but the powder is not directly exposed to the air, effectively avoiding the problem of water absorption and caking of the powder caused by direct exposure to the air, thereby ensuring the stable supply of the powder inside the nozzle, reducing the risk of interruption of the processing flow and decline of the operation quality. The plurality of material supply channels 21 and the plurality of material supply channels 21 are arranged at equal intervals and correspondingly, which can avoid the interruption of welding caused by the blockage of a single channel and ensure the stability of welding. The material supply channels 21 and the material supply channels 21 are unidirectionally communicated through a communicating component. When the powder blocks the material supply channel 21, the pressure of the material supply channel 21 increases, and the communicating component is unidirectionally opened, so that the protective gas enters the material supply channel 21 from the gas supply channel 22. Then, through the combined action of the communicating component and the high-pressure gas, the caked powder is crushed and discharged, realizing the automatic cleaning of the material supply channel 21, and the cleaning work may be more convenient, thereby reducing the maintenance difficulty and cost of the equipment. The protective cover 3 is coaxially sleeved on the outer wall of the connecting cylinder 2 and covers the outlet end of the connecting cylinder 2. A protective cavity 31 communicated with the gas supply channel 22 is arranged in the protective cover 3, which can form a protective layer with inert gas, effectively isolating the oxygen in the molten pool and the surrounding environment, preventing the oxidation of the molten pool, and thus improving the welding quality. At the same time, the protective cover 3 may also play a certain role in blocking the spattered welding slag, reducing the adhesion of the welding slag to the surface of the space, protecting the appearance quality of the workpiece, and reducing the potential interference to the subsequent processing flow. The structure of the present invention is compact and easy to use, can effectively prevent the blockage in the powder supply process, improve the welding quality, improve the performance and stability of the laser cladding nozzle, and also provides a strong guarantee for the overall operation efficiency and cladding quality of the handheld laser cladding device.

[0046] In an embodiment of the present invention, the protective inner core 1 is made of a high-temperature resistant material, such as graphite, to reduce the influence of the laser.

[0047] The laser cladding mentioned in the present invention is high-energy laser surface cladding. Its physical process is that under the irradiation of a high-energy laser beam, the surface of the substrate is rapidly melted, and the liquid metal forms a small-scale molten pool. In this molten pool, the original metal material is mixed with the added powder material to form a new liquid metal layer. After the laser beam passes, the temperature of the molten pool decreases, and the liquid metal rapidly cools to form a new solid cladding layer on the metal surface. Laser cladding can greatly change the metal properties of this key part, such as hardness, wear resistance, heat resistance, corrosion resistance, etc.

[0048] In a further optimized solution, a feed ring 23 is sleeved on the outer wall of the connecting cylinder 2. A feed cavity 24 communicating with the outside is arranged in the feed ring 23, and a plurality of feed channels 21 are respectively communicated with the feed cavity 24; the powder for laser cladding enters the feed cavity 24 through a feed joint 25. The feed ring 23 is sleeved and fixedly connected outside the connecting cylinder 2. The powder of the selected material is introduced into the feed cavity 24 through the feed joint 25, and then after being evenly distributed, it is introduced into the feed channels 21, so that the powder can be stably and continuously supplied to the feed channels 21.

[0049] In a further optimized solution, a gas supply ring 26 is sleeved outside the connecting cylinder 2. A gas supply cavity 27 communicating with the outside is opened in the gas supply ring 26, and a plurality of gas supply channels 22 are respectively communicated with the gas supply cavity 27. The protective gas from the outside is introduced into the gas supply cavity 27 through a gas supply joint 28. The gas supply ring 26 is sleeved and fixedly connected outside the connecting cylinder 2. The protective gas of the selected material is introduced into the gas supply cavity 27 through the gas supply joint 28, and then after being evenly distributed, it is introduced into the gas supply channels 22, so that the inert gas can be stably and continuously supplied to the gas supply channels 22 and supplied synchronously with the powder to realize the protection of the welding process.

[0050] Further optimization solution: The connected components include a number of connection channels 29 connected between the air supply channel 22 and the feeding channel 21. A partition plate 210 is slidably and sealingly connected in the connection channel 29. A limiting telescopic rod 211 is fixedly connected between the partition plate 210 and the feeding channel 21. A return spring 212 in a stretched state is sleeved outside the limiting telescopic rod 211. The two ends of the return spring 212 are respectively connected and communicated with the partition plate 210 and the feeding channel 21. A number of connection channels 29 are connected between the air supply channel 22 and the feeding channel 21. The partition plate 210 slides sealingly in the connection channel 29. A limiting telescopic rod 211 and a return spring 212 are fixedly connected between the partition plate 210 and the feeding channel 21. When working normally, the pressure in the air supply channel 22 is greater than the feeding pressure, and the partition plate 210 is pressed in the connection channel 29 to prevent the two from communicating. The return spring 212 in a stretched state can pull the partition plate 210 to achieve isolation under normal conditions, realizing the one-way connection between the air supply channel 22 and the feeding channel 21 and avoiding the backflow of gas and powder. When the feeding channel 21 is blocked by caking, the pressure in the powder channel increases. When the pressure of the powder on the partition plate 210 is greater than the pressure of the inert gas in the air supply channel 22 on the partition plate 210, the partition plate 210 extends towards the air supply channel 22, and the high-pressure inert gas enters the feeding channel 21 to flush the inner cavity of the feeding channel 21 to achieve cleaning and dredging.

[0051] In an embodiment of the present invention, through the design of the return spring 212 and the limiting telescopic rod 211, the moving distance of the partition plate 210 can be limited, ensuring the stability and reliability of the partition plate 210.

[0052] Further optimization solution: On the side of the connection channel 29 facing the feeding channel 21, a receiving groove 213 corresponding to the partition plate 210 is opened. The partition plate 210 is slidably and sealingly connected in the receiving groove 213. When the connection channel 29 is disconnected, the partition plate 210 sealingly abuts against the bottom end of the receiving groove 213. The receiving groove 213 opened on the side of the connection channel 29 facing the air supply channel 22 is used to store the partition plate 210, serving as a limiting structure for the partition plate 210 to prevent the partition plate 210 from opening in the reverse direction towards the feeding channel 21 to form a one-way structure. When the connection channel 29 is blocked, the cross-section and side wall of the partition plate 210 respectively cooperate with the receiving groove 213, realizing the sealed isolation between the air supply channel 22 and the feeding channel 21 and avoiding the leakage of gas and powder.

[0053] For a further optimized solution, the protective cavity 31 is arranged in a ring shape inside the protective cover 3. A number of air curtain spray holes 32 are arranged at equal intervals along the axial direction of the inner cavity of the protective cover 3. The air curtain spray holes 32 communicate with the protective cavity 31 to form a protective air curtain inside the protective cover 3. The protective cavity 31 is arranged in a ring shape inside the protective cover 3. The air curtain spray holes 32 are arranged at equal intervals along the axial direction of the inner cavity of the protective cover 3. The air curtain spray holes 32 communicate with the protective cavity 31 to form a protective air curtain inside the protective cover 3. By forming the protective air curtain, the protection effect of the molten pool is further enhanced, preventing the oxidation of the molten pool and the splashing of welding slag. At the same time, the high-speed air flow on the protective air curtain can accelerate the cooling rate of the molten pool, facilitate the realization of synchronous cooling inside and outside the molten pool, and reduce the stress fracture caused by too large temperature difference between inside and outside.

[0054] For a further optimized solution, a plurality of connecting blocks 33 are arranged inside the protective cover 3. The connecting blocks 33 are inserted into the connecting grooves 214 on the connecting cylinder 2. The first transfer channel 34 inside the connecting block 33 is correspondingly arranged and sealed and communicated with the second transfer channel 215 arranged inside the connecting cylinder 2. The protective cover 3 is locked and connected to the outer wall of the connecting cylinder 2 by bolts, which is convenient for disassembly. During installation, the connecting blocks 33 of the protective cover 3 are inserted into the connecting grooves 214 on the connecting cylinder 2, which is convenient for positioning, improves the connection accuracy, and enhances the connection stability and sealing performance between the protective cover 3 and the connecting cylinder 2. When the connecting block 33 is inserted into the connecting groove 214, the air supply channel 22 and the protection cavity can be communicated through the first transfer channel 34 and the second transfer channel 215, which is convenient for the connection of inert solids.

[0055] In an embodiment of the present invention, self-locking isolation valves are respectively arranged at the contact ends of the first transfer channel 34 and the second transfer channel 215. When connected, they can be mutually docked and unlocked to realize the connection of inert gas. When the connecting groove 214 and the connecting block 33 are separated, the two isolation valves respectively isolate the ports of the first transfer channel 34 and the second transfer channel 215, sealing the channels, thereby avoiding the blockage of the channels by external sundries during daily storage.

[0056] Embodiment 2

[0057] Referring to Figure 6 - Figure 9 As shown in the figure, the present invention also discloses a handheld laser cladding device, including a main body 4. A light source assembly for providing cladding laser is provided on the main body 4. The laser cladding nozzle is detachably connected to the light source assembly. The laser emitted by the light source assembly is emitted from the axial position of the light passing cavity 11.

[0058] An air supply module and a feeding module are respectively arranged on both sides of the main body 4. The air supply module is communicated with the air supply channel 22, and the feeding module is communicated with the feeding channel 21.

[0059] A control module 417 is provided on the body 4, and the control module 417 is electrically connected to the light source assembly, the gas supply module, and the feeding module respectively. The handheld laser cladding device includes the body 4, the light source assembly, the gas supply module, the feeding module, and the control module 417. The laser cladding nozzle is detachably installed on the body 4, realizing the integrated design of the laser cladding nozzle and the handheld laser cladding device, which is convenient for flexible operation and suitable for different welding requirements. The light source assembly emits laser light, which passes through the protective inner core 1 and then extends to fall on the workpiece. A molten pool is formed on the surface of the workpiece through the laser, and at the same time, the powder material is melted to combine the powder material with the workpiece to form a whole, completing the welding. The gas supply module is communicated with the gas supply channel 22, and the feeding module is communicated with the feeding channel 21. The integrated design facilitates gas supply and feeding. The control module 417 is designed inside the body 4 and is used to control the operation of the handheld laser cladding device. At the same time, it can also act as a counterweight to balance itself, improving the overall performance and operation efficiency of the handheld laser cladding device.

[0060] In an embodiment of the present invention, a handle 415 is provided at the bottom end of the body 4, forming a gun-like structure, which is convenient for holding and operating.

[0061] In an embodiment of the present invention, the operation button 416 is arranged at the position of the handle 415 and is electrically connected to the control module (417). When welding, it is necessary to maintain the pressing state, and the laser will automatically turn off after releasing the hand, avoiding accidental touch.

[0062] In an embodiment of the present invention, the control module 417 has a programming function, and operation parameters can be manually input to control data such as laser power, feeding, and gas supply pressure. Then, one-key control can be achieved through the operation button 416.

[0063] In a further optimized solution, the light source assembly includes a connection shell 41 provided on the body 4, and the protective inner core 1 is detachably connected to the connection shell 41. A light source module electrically connected to the control module 417 is arranged inside the connection shell 41, and the light source module is correspondingly arranged with the protective inner core 1. The connection shell 41 of the light source assembly is connected to the body 4, which is convenient for disassembly. The light source module is arranged in the connection shell 41, and the protective inner core 1 is screwed tightly on the connection shell 41 through the threaded section 12. Its inlet is aligned with the output end of the light source module, so that the light source can stably and accurately irradiate into the light transmission cavity 11. The light source module is electrically connected to the control module 417, and the power of the laser can be adjusted. At the same time, one-key operation is realized through the operation button 416, so that the light source can stably and accurately irradiate into the light transmission cavity 11.

[0064] For a further optimized solution, the light source module includes a fixed housing 42 fixedly connected inside the connection housing 41. A laser light source 43 is arranged inside the fixed housing 42. The laser emitted by the laser light source 43 enters the light passing cavity 11 after passing through a focusing lens 44 slidably arranged inside the fixed housing 42. The fixed housing 42 is installed inside the connection housing 41 by using a shock-absorbing seat, which improves the protection inside the laser light source 43. The laser emitted by the laser light source 43 enters the light passing cavity 11 after passing through a focusing lens 44 slidably arranged inside the fixed housing 42, realizing the focusing and adjustment of the laser, enabling the laser to irradiate the workpiece more accurately, and improving the precision and efficiency of laser cladding.

[0065] In an embodiment of the present invention, since the power of the laser light source 43 needs to be adjusted according to requirements, a plurality of adjustment grooves 45 are longitudinally formed on the inner wall of the fixed housing 42. An adjustment screw rod 46 driven by an adjustment motor 47 is rotatably connected inside the adjustment groove 45. The adjustment screw rod 46 is threadedly connected to the edge of the focusing lens 44, driving the focusing lens 44 to move up and down, and condensing the laser when the type or intensity of the laser generated by the laser light source 43 is different.

[0066] In an embodiment of the present invention, the gas supply module includes a first installation box 48 installed on one side of the main body 4. The gas supply container 414 is detachably connected to the first installation box 48, which is convenient for integration and replacement; the outlet of the gas supply container 414 is quickly connected to the gas supply joint 28 through a gas supply pipe.

[0067] In an embodiment of the present invention, the feeding module includes a second installation box 49 installed on the other side of the main body 4. The feeding container 413 is detachably connected to the second installation box 49, which is convenient for integration and replacement; the outlet of the feeding container 413 is quickly connected to the feeding joint 25 through a feeding pipe.

[0068] In an embodiment of the present invention, a pressing plate 410 is arranged at the tail end of the first installation box 48. The pressing plate 410 is connected to the first installation box 48 through a locking rod 412 and a sliding rod 411, which is convenient for the disassembly and fixation of the first gas supply container 414.

[0069] In an embodiment of the present invention, a pressing plate 410 is also arranged at the tail end of the second installation box 49. Its structure and principle are the same as those of the first installation box 48, and will not be elaborated here.

[0070] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0071] The embodiments described above are only descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the spirit of the design of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A laser cladding nozzle, characterized in that, Including: A protective inner core (1), a light passing cavity (11) for laser to pass through is coaxially penetrated in the protective inner core (1); A connecting cylinder (2), the connecting cylinder (2) is coaxially fixed on the inner wall of the protective inner core (1), and the laser for cladding is emitted from the bottom end of the connecting cylinder (2); A plurality of feeding channels (21), the plurality of feeding channels (21) are arranged at equal intervals in the connecting cylinder (2), and the outlets of the plurality of feeding channels (21) are arranged around the outlet of the light passing cavity (11); A plurality of air supply channels (22), the plurality of air supply channels (22) are arranged at equal intervals in the connecting cylinder (2), the outlets of the plurality of air supply channels (22) are arranged around the outlet of the light passing cavity (11), and the air supply channels (22) are correspondingly arranged with the feeding channels (21) and are unidirectionally communicated through a communicating component; A protective cover (3), the protective cover (3) is coaxially sleeved on the outer wall of the connecting cylinder (2) and covers the outlet end of the connecting cylinder (2), and a protective cavity (31) communicated with the air supply channel (22) is arranged in the protective cover (3).

2. The laser cladding nozzle according to claim 1, characterized in that: A feeding ring (23) is sleeved on the outer wall of the connecting cylinder (2), a feeding cavity (24) communicated with the outside is arranged in the feeding ring (23), and the plurality of feeding channels (21) are respectively communicated with the feeding cavity (24); the powder for laser cladding enters the feeding cavity (24) through a feeding joint (25).

3. The laser cladding nozzle according to claim 1, wherein: An air supply ring (26) is sleeved outside the connecting cylinder (2), an air supply cavity (27) communicated with the outside is arranged in the air supply ring (26), the plurality of air supply channels (22) are respectively communicated with the air supply cavity (27), and a protective gas channel air supply joint (28) of the outside leads into the air supply cavity (27).

4. The laser cladding nozzle according to claim 1, wherein: The communicating component includes a plurality of connecting channels (29) connected between the air supply channel (22) and the feeding channel (21), a partition plate (210) is hermetically slidably connected in the connecting channel (29), a limiting telescopic rod (211) is fixedly connected between the partition plate (210) and the feeding channel (21), a return spring (212) in a stretched state is sleeved outside the limiting telescopic rod (211), and two ends of the return spring (212) are respectively fixedly connected and communicated with the partition plate (210) and the feeding channel (21).

5. The laser cladding nozzle according to claim 4, wherein: A receiving groove (213) corresponding to the partition plate (210) is opened on one side of the connecting channel (29) facing the feeding channel (21), the partition plate (210) is hermetically slidably connected in the receiving groove (213), and when the connecting channel (29) is disconnected, the partition plate (210) hermetically abuts against the bottom end of the receiving groove (213).

6. The laser cladding nozzle according to claim 1, wherein: The protective cavity (31) is annularly arranged in the protective cover (3), a plurality of air curtain spray holes (32) are axially arranged at equal intervals in the inner cavity of the protective cover (3), the air curtain spray holes (32) are communicated with the protective cavity (31), and a protective air curtain is formed in the protective cover (3).

7. The laser cladding nozzle according to claim 6, wherein: A plurality of connecting blocks (33) are arranged inside the protective cover (3). The connecting blocks (33) are inserted into connecting grooves (214) on the connecting cylinder (2). A first transfer channel (34) inside the connecting blocks (33) is correspondingly arranged and hermetically communicated with a second transfer channel (215) arranged inside the connecting cylinder (2).

8. A handheld laser cladding device, characterized by the laser cladding nozzle according to any one of claims 1-7: It includes a main body (4). A light source assembly for providing cladding laser is arranged on the main body (4). The laser cladding nozzle is detachably connected to the light source assembly. The laser emitted by the light source assembly is emitted from the axial position of the light passing cavity (11). Gas supply modules and feeding modules are respectively arranged on both sides of the main body (4). The gas supply modules are communicated with the gas supply channels (22), and the feeding modules are communicated with the feeding channels (21). A control module (37) is arranged on the main body (4). The control module (37) is electrically connected to the light source assembly, the gas supply module and the feeding module respectively.

9. The hand-held laser cladding device according to claim 8, characterized in that: The light source assembly includes a connecting shell (41) arranged on the main body (4). The protective inner core (1) is detachably connected to the connecting shell (41). A light source module electrically connected to the control module (37) is arranged inside the connecting shell (41). The light source module is correspondingly arranged with the protective inner core (1).

10. The handheld laser cladding device according to claim 9, characterized in that: The light source module includes a fixed shell (42) fixedly connected inside the connecting shell (41). A laser light source (43) is arranged inside the fixed shell (42). The laser emitted by the laser light source (43) enters the light passing cavity (11) after passing through a focusing lens (44) slidably arranged inside the fixed shell (42).

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