Coaxial powder feeding integrated device for laser cladding head

Abstract

The invention relates to an integrated device for a coaxial powder feeding laser cladding head, and belongs to the technical field of laser cladding. Comprising a connecting base and a nozzle structure connected to the bottom of the connecting base, a powder feeding pipeline, a water cooling pipeline and an air cooling pipeline are arranged on the connecting base, the nozzle structure comprises an inner nozzle and an outer nozzle, the inner nozzle and the outer nozzle are each of a funnel structure, and the inner nozzle is arranged in the outer nozzle in a matched mode. Through modular assembly design of the inner nozzle, the outer nozzle, the pipeline and the focusing lens, cooling, powder feeding and the focusing lens can be subjected to single-module disassembly, assembly and replacement, maintenance can be more convenient, the replacement cost is lower, the whole nozzle does not need to be replaced, meanwhile, a connecting piece is matched, and the service life of the nozzle is prolonged. And the whole nozzle can be quickly positioned and mounted. In addition, the cooling effect of a water cooling mode and an air cooling mode can be achieved at the same time, the cooling effect on the whole nozzle is improved, and therefore the service life is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser cladding, and relates to an integrated device for a coaxial powder feeding laser cladding head. Background Art

[0002] Laser cladding is a surface modification technology that realizes the melting, deposition and forming of metal materials by precisely controlling laser energy and powder delivery, and is usually used for repairing parts or enhancing surface properties. The components of a coaxial powder feeding laser cladding head generally include a laser generator, a powder delivery system, a nozzle, a focusing system, etc. Its working principle is to focus the laser beam on the surface of the workpiece to form a molten pool. The characteristic of coaxial powder feeding is that the powder flow and the laser beam are coaxial, so that the powder can be evenly distributed into the molten pool through the coaxial nozzle, and solidify after melting to form a coating. The coaxial design can not only make the powder distribution more uniform, improve the cladding quality, but also reduce waste and improve efficiency. It is widely used in fields such as mechanical manufacturing, aerospace, and automotive maintenance.

[0003] Although the current laser cladding technology has advantages such as high precision, good bonding strength, and high material utilization rate, it also has disadvantages such as complex equipment, high cost, and the need for precise parameter control. Especially in terms of the equipment structure, it is not modular enough, which indirectly increases the production difficulty and maintenance cost. Laser cladding heads generally use an integrated funnel-shaped nozzle, with a laser channel arranged in the middle, several powder channels distributed in a ring shape inside, and then a cooling channel is set up. The powder delivery and cooling are completed through direct connection between each pipeline and the nozzle. Since the nozzle works at high temperature for a long time, it is easy to wear and needs to be replaced. In addition, the powder channels are also prone to blockage and need to be cleaned. If any of these situations occur, the entire nozzle needs to be removed for repair and replacement. Not only can't it be repaired and replaced unilaterally, but it also greatly increases the replacement cost. Therefore, we propose an integrated device for a coaxial powder feeding laser cladding head to solve the above-mentioned problems. Summary of the Invention

[0004] In view of this, in order to solve the problem that when the traditional nozzle needs to be repaired and replaced, the entire nozzle needs to be removed for repair and replacement, which not only cannot be repaired and replaced unilaterally, but also greatly increases the replacement cost, the present invention provides an integrated device for a coaxial powder feeding laser cladding head.

[0005] To achieve the above object, the present invention provides the following technical solutions: including a connecting seat, and a nozzle structure connected to the bottom of the connecting seat;

[0006] A powder feeding pipeline, a water cooling pipeline and an air cooling pipeline are provided on the connecting seat;

[0007] The nozzle structure comprises an inner nozzle and an outer nozzle, both of which are funnel structures, and the inner nozzle is adapted to be arranged inside the outer nozzle;

[0008] The inner nozzle is used for passing the laser beam, and a spiral water delivery cavity connected to the water cooling pipe is provided inside the inner nozzle for water cooling of the entire nozzle structure;

[0009] The outer nozzle is used for conveying powder, and a plurality of powder channels connected to the powder conveying pipe are arranged inside the outer nozzle. The air cooling pipe is connected to the outer nozzle and is used for air cooling of the entire nozzle structure.

[0010] It also includes a connecting piece, which is arranged between the outer nozzle and the connecting seat and is used to quickly and fixedly connect the entire nozzle structure to the connecting seat;

[0011] It also includes a connecting tube which is detachably connected to the inner mouth. A through hole which is adapted to be plugged with the connecting tube is provided inside the connecting seat. A focusing lens is fixedly connected inside the connecting tube.

[0012] Furthermore, the water cooling pipe includes a water inlet pipe and a water outlet pipe arranged on the connecting seat, the top ends of the water inlet pipe and the water outlet pipe extend to the outside of the connecting seat and are respectively connected to the water inlet end and the water outlet end of the refrigeration equipment, a water inlet groove connected to the upper port of the spiral water delivery chamber is opened on one side of the top of the inner nozzle, and the bottom end of the water inlet pipe extends to the bottom of the connecting seat and is sealed with the water inlet groove, a water outlet conduit connected to the lower port of the spiral water delivery chamber is fixedly connected through the bottom of one side of the inner nozzle, a support block is integrally provided on the top of one side of the inner nozzle, a water outlet groove is opened on the top of the support block, and the other end of the water outlet conduit is fixedly passed through the bottom of the support block and is connected to the water outlet groove, and the bottom end of the water outlet pipe extends to the bottom of the connecting seat and is sealed with the water outlet groove.

[0013] Furthermore, a positioning groove adapted to be engaged with the support block is provided on one side of the top of the outer nozzle, and a clearance hole communicating with the bottom wall of the positioning groove is provided on one side of the outer nozzle, and the clearance hole is used in conjunction with the water outlet conduit. When the inner nozzle is clamped inside the outer nozzle, a complete nozzle can be formed, and the top and bottom of the inner nozzle and the outer nozzle maintain the same flat surface.

[0014] Furthermore, the powder delivery pipeline includes a powder delivery pipe and multiple powder conveying pipes arranged on the connecting seat, one end of the powder delivery pipe extends to the outside of the connecting seat and is connected to the powder feeder, a powder conveying chamber is opened inside the connecting seat, the other end of the powder delivery pipe is connected to an inner wall of one side of the powder conveying chamber, multiple powder conveying pipes are arranged in a ring shape at an equal distance at the bottom of the connecting seat, and the top ends of the multiple powder conveying pipes are connected to the bottom wall of the powder conveying chamber, and the bottom ends of the multiple powder conveying pipes extend downward and are sealed and connected to the upper ports of the corresponding powder channels.

[0015] Furthermore, a spiral air supply groove is provided on the outer wall of the inner nozzle.

[0016] Furthermore, the air cooling duct includes an air inlet pipe arranged on the connecting seat, the top end of the air inlet pipe extends to the outside of the connecting seat and is connected to the air outlet end of the air pump, the inside of the outer nozzle is provided with an air supply channel opposite to the position of the give way hole, and the bottom end of the air inlet pipe extends to below the bottom of the connecting seat and is sealedly connected to the upper end of the air supply channel, and the inner wall on one side of the outer nozzle is provided with an opening connected to the air supply channel.

[0017] Further, the connecting piece includes a rotating ring and two docking blocks, the rotating ring is rotatably sleeved on the top of the outer wall of the outer mouth, the two docking blocks are symmetrically fixedly connected to the bottom of the connecting seat, the top of the outer mouth is provided with docking interfaces on both side edges for use with corresponding docking blocks, the inner wall of the rotating ring is symmetrically fixedly connected with two clamping blocks, one side of the inner wall of the two docking interfaces is provided with a storage slot for use with the corresponding clamping blocks, one side of the two docking blocks is provided with a clamping slot for use with the corresponding clamping blocks, the top of the two clamping blocks is provided with a threaded connection hole, the bottom of the two docking blocks is threadedly connected with a positioning screw threadedly connected to the corresponding threaded connection hole, and the bottom ends of the two positioning screws are fixedly connected with knobs.

[0018] Furthermore, the inner wall of the rotating ring is symmetrically provided with two arc-shaped notches, and the two arc-shaped notches are used in conjunction with the two docking ports respectively.

[0019] Furthermore, the outer walls of the water inlet pipe, air inlet pipe, water outlet pipe and multiple powder conveying pipes are fixedly sleeved with sealing rings, the top of the sealing ring is tightly fitted with the bottom of the connecting seat, the bottom of the sealing ring is fixedly connected with a sealing ring, and the upper ends of the water inlet groove, air supply channel, water outlet groove and multiple powder channels are all provided with card grooves that are sealed and clamped with corresponding sealing rings.

[0020] Furthermore, the outer wall of the outer nozzle is provided with a plurality of strip-shaped through grooves at equal intervals in an annular shape.

[0021] The beneficial effects of the present invention are:

[0022] The present invention modularizes the assembly design of the inner nozzle, the outer nozzle, the pipeline and the focusing lens, and can disassemble and replace the cooling, powder feeding and focusing lenses in a single module, which is not only more convenient for maintenance, but also has a lower replacement cost. There is no need to replace the entire nozzle, and the entire nozzle can be quickly positioned and installed with the connecting parts. In addition, by providing a spiral water delivery cavity and a spiral air supply groove, the cooling effect of the water cooling and air cooling dual modes can be achieved at the same time, improving the cooling effect of the entire nozzle, thereby extending the service life.

[0023] Other advantages, objects, and features of the present invention will be set forth in part in the following description, and in part will be obvious to those skilled in the art upon examination of the following, or may be learned from the practice of the present invention. The objects and other advantages of the present invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, where:

[0025] Figure 1 is a perspective bottom view of the overall structure of the present invention;

[0026] Figure 2 is an exploded perspective view of the overall structure of the present invention;

[0027] Figure 3 is an exploded perspective view of the overall structure of the nozzle of the present invention;

[0028] Figure 4 is a perspective bottom view of the structure of the connecting seat of the present invention;

[0029] Figure 5 is a sectional perspective view of the structure of the connecting seat of the present invention;

[0030] Figure 6 is a sectional perspective view of the overall structure of the nozzle of the present invention;

[0031] Figure 7 is of the present invention Figure 6 further sectional perspective view of the overall structure;

[0032] Figure 8 is a first perspective exploded view of the outer nozzle structure of the present invention;

[0033] Figure 9 is a second perspective exploded view of the outer nozzle structure of the present invention;

[0034] Figure 10 is a sectional perspective view of the docking connection structure between the outer nozzle and the docking block of the present invention;

[0035] Figure 11 is a perspective view of the rotating ring structure of the present invention;

[0036] Figure 12 is a perspective view of the docking block structure of the present invention.

[0037] Reference numerals: 1, powder feeding pipe; 2, powder conveying pipe; 3, support block; 31, water outlet groove; 4, water outlet conduit; 5, water inlet pipe; 6, air inlet pipe; 7, water outlet pipe; 8, focusing lens; 9, docking block; 91, clamping groove; 10, connecting seat; 101, through hole; 102, powder conveying cavity; 11, rotating ring; 111, arc notch; 12, clamping block; 121, threaded connection hole; 13, positioning screw; 14, knob; 15, sealing sleeve ring; 16, sealing ring; 17, clamping groove; 20, inner nozzle; 201, spiral water conveying cavity; 202, spiral air supply groove; 203, water inlet groove; 204, internal thread; 30, outer nozzle; 301, powder channel; 302, positioning groove; 303, air supply channel; 304, opening; 305, relief hole; 306, docking port; 307, receiving groove; 308, strip-shaped through groove; 40, connecting pipe; 401, external thread. Detailed implementation mode

[0038] The following specific examples illustrate the implementation modes of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0039] Example 1: As Figures 1-7As shown in the figure, an integrated device for a coaxial powder feeding laser cladding head includes a connecting seat 10 and a nozzle structure connected to the bottom of the connecting seat 10. A powder feeding pipe, a water cooling pipe and an air cooling pipe are arranged on the connecting seat 10. The nozzle structure includes an inner nozzle 20 and an outer nozzle 30. Both the inner nozzle 20 and the outer nozzle 30 are funnel structures, and the inner nozzle 20 is adaptively arranged inside the outer nozzle 30. The inner nozzle 20 is used for the penetration of the laser beam. A spiral water delivery cavity 201 connected to the water cooling pipe is arranged inside the inner nozzle 20 for water cooling the whole nozzle structure. The outer nozzle 30 is used for powder delivery. A plurality of powder channels 301 connected to the powder feeding pipe are arranged inside the outer nozzle 30. The air cooling pipe is connected to the outer nozzle 30 for air cooling the whole nozzle structure. A connecting pipe 40 is detachably connected to the inner nozzle 20. A through hole 101 adapted to be inserted into the connecting pipe 40 is opened inside the connecting seat 10. A focusing lens 8 is fixedly connected inside the connecting pipe 40. An external thread 401 is arranged at the bottom of the outer wall of the connecting pipe 40, and an internal thread 204 is arranged at the top of the inner wall of the inner nozzle 20. The connecting pipe 40 is fixedly connected to the top end of the inner nozzle 20 through the threaded connection between the external thread 401 and the internal thread 204. Through the threaded connection method, the connecting pipe 40 and the inner nozzle 20 can be quickly disassembled, which is convenient for individual maintenance and replacement of the inner nozzle 20 or the focusing lens 8. At the same time, when assembling or disassembling the inner nozzle 20 and the outer nozzle 30, the clamping or taking out of the inner nozzle 20 can be completed by operating the connecting pipe 40, making the operation more convenient.

[0040] The present invention can be used in the field of integrated devices for coaxial powder feeding laser cladding heads, and is also applicable to other fields of the present invention.

[0041] Example 2, this example is a further improvement of the previous example: As Figures 1-10As shown, the water cooling pipeline includes an inlet pipe 5 and an outlet pipe 7 arranged on the connecting seat 10, the top ends of the inlet pipe 5 and the outlet pipe 7 are extended to the outside of the connecting seat 10 and are respectively connected to the water inlet end and the water outlet end of the refrigeration equipment, a water inlet groove 203 connected to the upper end of the spiral water delivery chamber 201 is opened on one side of the top of the inner nozzle 20, and the bottom end of the inlet pipe 5 extends to the bottom of the connecting seat 10 and is sealed with the inlet groove 203, a water outlet conduit 4 connected to the lower end of the spiral water delivery chamber 201 is fixedly connected through the bottom of one side of the inner nozzle 20, a support block 3 is integrally provided on the top of one side of the inner nozzle 20, a water outlet groove 31 is opened on the top of the support block 3, and the other end of the water outlet conduit 4 is fixedly passed through the bottom of the support block 3 and is connected to the water outlet groove 31, and the bottom end of the outlet pipe 7 extends to the bottom of the connecting seat 10 and is sealed with the water outlet groove 31. The cooling liquid first enters from the water inlet pipe 5 through the circulating water pump, and flows into the spiral water delivery cavity 201 through the water inlet groove 203, thereby cooling the inner nozzle 20 with water, and then flows out from the water outlet conduit 4, and circulates from the water outlet pipe 7 through the water outlet groove 31 to the cooling tower or refrigeration unit for further cooling, thereby achieving the circulating cooling effect of the cooling liquid.

[0042] In one aspect of the present embodiment, a positioning groove 302 adapted to be snap-fitted with the support block 3 is provided on one side of the top of the outer nozzle 30, and a clearance hole 305 connected to the bottom wall of the positioning groove 302 is provided on one side of the outer nozzle 30, and the clearance hole 305 is used in conjunction with the water outlet conduit 4. When the inner nozzle 20 is clamped inside the outer nozzle 30, a complete nozzle can be formed by combination, and the top and bottom of the inner nozzle 20 and the outer nozzle 30 both maintain the same flat surface. In the process of docking the inner nozzle 20 and clamping it inside the outer nozzle 30, the support block 3 is made to correspond to the position of the positioning groove 302. After the inner nozzle 20 is clamped in the outer nozzle 30, the support block 3 can be just clamped in the positioning groove 302, which can play a clamping effect of positioning the inner nozzle 20 and the outer nozzle 30. At the same time, during the insertion process, since the water outlet conduit 4 is located outside the inner spout 20 and is in a protruding state, it is impossible to maintain a close fit with the inner wall of the outer spout 30. Therefore, by providing a clearance hole 305, the water outlet conduit 4 can pass through the clearance hole 305, which facilitates the normal fit and insertion of the inner spout 20 and the outer spout 30.

[0043] Embodiment 3, this embodiment is a further improvement of the previous embodiment: Figures 1-10As shown, the powder delivery pipeline includes a powder delivery pipe 1 and a plurality of powder delivery pipes 2 arranged on a connection seat 10, one end of the powder delivery pipe 1 extends to the outside of the connection seat 10 and is connected to the powder feeder, a powder delivery chamber 102 is provided inside the connection seat 10, the other end of the powder delivery pipe 1 is connected to the inner wall of one side of the powder delivery chamber 102, and the plurality of powder delivery pipes 2 are arranged at the bottom of the connection seat 10 in an annular shape and equidistantly, and the top ends of the plurality of powder delivery pipes 2 are all connected to the bottom wall of the powder delivery chamber 102, and the bottom ends of the plurality of powder delivery pipes 2 are all extended downward and sealedly connected to the upper end of the corresponding powder channel 301. The powder is delivered into the powder delivery chamber 102 through the powder feeder through the powder delivery pipe 1. In the present application, the connection between the powder delivery pipe 1 and the powder delivery chamber 102 is only an illustration of realizing one of the technical solutions, and the delivery mode of the powder delivery chamber 102 can be adopted, or the multi-pipeline connection mode can be adopted, and during the delivery process, the air flow distribution can be optimized by a vortex generator, as long as the powder is evenly delivered, and the powder delivery path mode is not specifically limited or excessively elaborated. Then the powder is uniformly transported from the multiple powder conveying pipes 2 to the multiple powder channels 301, thereby achieving a coaxial powder feeding effect of the powder and the laser.

[0044] Embodiment 4, this embodiment is a further improvement of the previous embodiment: Figures 1-10 As shown, the outer wall of the inner nozzle 20 is provided with a spiral air supply groove 202. By providing the spiral air supply groove 202, the thickness of a part of the inner nozzle 20 can be reduced, and a better cooling effect can be achieved during the water cooling process. The air cooling duct includes an air inlet pipe 6 arranged on the connecting seat 10, the top of the air inlet pipe 6 extends to the outside of the connecting seat 10 and is connected to the air outlet of the air pump, the inside of the outer nozzle 30 is provided with an air supply channel 303 opposite to the position of the clearance hole 305, and the bottom end of the air inlet pipe 6 extends to the bottom of the connecting seat 10 and is sealed and connected to the upper end of the air supply channel 303, and an opening 304 connected to the air supply channel 303 is provided on the inner wall of one side of the outer nozzle 30. Start the air pump, send the cold air from the air inlet pipe 6 into the air supply channel 303, and then blow it out from the opening 304. Since the inner nozzle 20 is completely fitted inside the outer nozzle 30, and the outer wall of the inner nozzle 20 is provided with a spiral air supply groove 202, the cold air blown out from the opening 304 will be transported through the spiral air supply groove 202. At the same time, a clearance hole 305 is provided, which is used in conjunction with the water outlet conduit 4, which not only facilitates the fitting and clamping between the inner nozzle 20 and the outer nozzle 30, but also enables the cold air to be discharged from the clearance hole 305 after being transported through the spiral air supply groove 202 by being arranged relative to the air supply channel 303, thereby achieving the effect of air cooling. During the transportation process in the spiral air supply groove 202, the cold air can flow through the outer wall of the inner nozzle 20 and the inner wall of the outer nozzle 30 at the same time, and then, under the effect of water cooling, it is further improved through air cooling to further improve the cooling effect of the entire nozzle.

[0045] In one aspect of this embodiment, a plurality of strip-shaped through grooves 308 are equidistantly arranged in a ring shape on the outer wall of the outer nozzle 30. By providing a plurality of strip-shaped through grooves 308 on the outer wall of the outer nozzle 30, the heat dissipation performance of the outer nozzle 30 can be improved, thereby further enhancing the temperature reduction effect of the entire nozzle.

[0046] Example 5. This example is a further improvement of the previous example: As Figures 1-12As shown in the figure, an integrated device for a coaxial powder feeding laser cladding head further includes a connecting member disposed between the outer nozzle 30 and the connecting seat 10, which is used to quickly and fixedly connect the entire nozzle structure to the connecting seat 10. The connecting member includes a rotating ring 11 and two docking blocks 9. The rotating ring 11 is rotatably sleeved on the top of the outer wall of the outer nozzle 30. The two docking blocks 9 are symmetrically and fixedly connected to the bottom of the connecting seat 10. Docking ports 306 for cooperating with the corresponding docking blocks 9 are provided on both sides of the top edge of the outer nozzle 30. Two clamping blocks 12 are symmetrically and fixedly connected to the inner wall of the rotating ring 11. Receiving slots 307 for cooperating with the corresponding clamping blocks 12 are provided on the inner wall of one side of the two docking ports 306. Clamping slots 91 for cooperating with the corresponding clamping blocks 12 are provided on one side of the two docking blocks 9. Threaded connection holes 121 are provided at the top of the two clamping blocks 12. Positioning screws 13 threadedly connected to the corresponding threaded connection holes 121 penetrate through the bottom of the two docking blocks 9. Knobs 14 are fixedly connected to the bottom ends of the two positioning screws 13. During the installation of the nozzle, first, the inner nozzle 20 is positioned and clamped with the outer nozzle 30 through the alignment and clamping between the support block 3 and the positioning slot 302. Then, through the docking between the two docking blocks 9 and the two docking ports 306, the nozzle is preliminarily positioned at the bottom of the connecting seat 10. During the alignment process, the outer nozzle 30 and the docking block 9 are preliminarily positioned first, so that the entire nozzle cannot rotate during the upward movement, thereby enabling the water inlet pipe 5, the air inlet pipe 6, the water outlet pipe 7, and multiple powder feeding pipes 2 to be correspondingly inserted into the water inlet groove 203, the air supply channel 303, the water outlet groove 31, and multiple powder channels 301, thus achieving an accurate and rapid positioning and docking effect. After the entire nozzle is docked and abutted against the bottom of the connecting seat 10, then rotate the rotating ring 11 to drive the clamping block 12 to rotate and move from the receiving slot 307 into the clamping slot 91, thereby preliminarily fixing the entire nozzle on the two docking blocks 9. At this time, the nozzle cannot fall off. That is, after the outer nozzle 30 is fixed, the inner nozzle 20 is directly fixed. For better fixation, then rotate the knob 14 to drive the positioning screw 13 to rotate, so that the positioning screw 13 is connected to the threaded connection hole 121 on the clamping block 12, and then the rotating ring 11 is fixed through the clamping block 12, thus completing the fixed installation of the entire nozzle. On the contrary, rotate the knob 14 to release the connection between the positioning screw 13 and the clamping block 12, and the nozzle can be quickly disassembled by rotating the rotating ring 11. The whole process is simple to operate, can achieve the effect of quick disassembly and assembly, does not require a lot of screws for fixation, and through the clamping between the inner nozzle 20 and the outer nozzle 30, it can be disassembled separately, thus enabling separate replacement and maintenance of the cooling component and the powder feeding component, without the need to replace the entire nozzle, which is not only convenient for single-sided maintenance but also can better control the maintenance cost.

[0047] In one aspect of this embodiment, two arc-shaped notches 111 are symmetrically formed on the inner wall of the rotating ring 11, and the two arc-shaped notches 111 are respectively used in cooperation with the two docking ports 306. When the rotating ring 11 is rotated so that the clamping block 12 is located in the storage groove opening 307, at this time, the arc-shaped notch 111 just corresponds and communicates with the docking port 306. When docking the nozzle, the knob 14 can first pass normally between the arc-shaped notch 111 and the docking port 306 to achieve the effect of making way.

[0048] Embodiment 6. This embodiment is a further improvement of the previous embodiment: As Figures 1-10 shown, sealing collar rings 15 are fixedly sleeved on the outer walls of the water inlet pipe 5, the air inlet pipe 6, the water outlet pipe 7 and the plurality of powder pipes 2. The top of the sealing collar ring 15 is in close fit with the bottom of the connecting seat 10. The bottom of the sealing collar ring 15 is fixedly connected with a sealing ring 16. Clamping grooves 17 for sealing and clamping with the corresponding sealing collar rings 15 are provided at the upper ports of the water inlet groove 203, the air supply channel 303, the water outlet groove 31 and the plurality of powder channels 301. When the nozzle is fixedly connected to the bottom of the connecting seat 10, the water inlet pipe 5, the air inlet pipe 6, the water outlet pipe 7 and the plurality of powder pipes 2 can be correspondingly inserted into the water inlet groove 203, the air supply channel 303, the water outlet groove 31 and the plurality of powder channels 301 to realize the normal transportation of the coolant, the cold air and the powder. Moreover, when each pipe is inserted into the corresponding channel, the corresponding sealing collar ring 15 can be correspondingly and sealingly clamped in the clamping groove 17, and in cooperation with the setting of the sealing ring 16, the sealing performance between each transportation path can be ensured.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An integrated device for a laser cladding head with coaxial powder feeding, characterized in that: include: A connecting seat (10), and a nozzle structure connected to the bottom of the connecting seat (10); The connecting seat (10) is provided with a powder delivery pipeline, a water cooling pipeline and an air cooling pipeline; The nozzle structure comprises an inner nozzle (20) and an outer nozzle (30), wherein the inner nozzle (20) and the outer nozzle (30) are both funnel structures, and the inner nozzle (20) is adapted to be arranged inside the outer nozzle (30); The inner nozzle (20) is used for passing a laser beam, and a spiral water delivery cavity (201) connected to the water cooling pipe is provided inside the inner nozzle (20) for water cooling of the entire nozzle structure; The outer nozzle (30) is used for conveying powder, and a plurality of powder channels (301) connected to the powder conveying pipe are provided inside the outer nozzle (30). The air cooling pipe is connected to the outer nozzle (30) and is used for air cooling of the entire nozzle structure. It also includes a connecting piece, which is arranged between the outer nozzle (30) and the connecting seat (10) and is used to quickly fix the entire nozzle structure to the connecting seat (10); It also comprises a connecting tube (40) which is detachably connected to the inner nozzle (20); a through hole (101) adapted to be plugged into the connecting tube (40) is provided inside the connecting seat (10); a focusing lens (8) is fixedly connected inside the connecting tube (40).

2. An integrated device for a laser cladding head with coaxial powder feeding as claimed in claim 1, characterized in that: The water cooling pipe comprises a water inlet pipe (5) and a water outlet pipe (7) arranged on the connecting seat (10), the top ends of the water inlet pipe (5) and the water outlet pipe (7) both extend to the outside of the connecting seat (10) and are respectively connected to the water inlet end and the water outlet end of the refrigeration equipment, a water inlet groove (203) connected to the upper end of the spiral water delivery cavity (201) is provided on one side of the top of the inner nozzle (20), and the bottom end of the water inlet pipe (5) extends to below the bottom of the connecting seat (10) and is sealed with the water inlet groove (203). A water outlet conduit (4) connected to the lower end of the spiral water delivery chamber (201) is fixedly connected through the bottom of one side of the inner spout (20), a support block (3) is integrally provided on the top of one side of the inner spout (20), a water outlet groove (31) is provided on the top of the support block (3), and the other end of the water outlet conduit (4) is fixedly passed through the bottom of the support block (3) and is connected to the water outlet groove (31), and the bottom end of the water outlet pipe (7) extends to below the bottom of the connection seat (10) and is sealed and connected to the water outlet groove (31).

3. The integrated device for a laser cladding head with coaxial powder feeding according to claim 2, characterized in that: A positioning groove (302) adapted to be snap-fitted with the support block (3) is provided on one side of the top of the outer nozzle (30), and a clearance hole (305) communicating with the bottom wall of the positioning groove (302) is provided on one side of the outer nozzle (30), and the clearance hole (305) is used in conjunction with the water outlet conduit (4).

4. An integrated device for a laser cladding head with coaxial powder feeding as claimed in claim 1 or 3, characterized in that: The powder delivery pipeline comprises a powder delivery pipe (1) and a plurality of powder conveying pipes (2) arranged on a connection seat (10); one end of the powder delivery pipe (1) extends to the outside of the connection seat (10) and is connected to a powder feeder; a powder conveying chamber (102) is provided inside the connection seat (10); the other end of the powder delivery pipe (1) is connected to an inner wall of one side of the powder conveying chamber (102); the plurality of powder conveying pipes (2) are arranged at equal intervals in a ring shape at the bottom of the connection seat (10); the top ends of the plurality of powder conveying pipes (2) are connected to the bottom wall of the powder conveying chamber (102); and the bottom ends of the plurality of powder conveying pipes (2) extend downward and are sealed and connected to the upper ends of corresponding powder channels (301).

5. The integrated device for a laser cladding head with coaxial powder feeding as claimed in claim 3, characterized in that: The outer wall of the inner nozzle (20) is provided with a spiral air supply groove (202).

6. The integrated device for a laser cladding head with coaxial powder feeding according to claim 5, characterized in that: The air cooling duct comprises an air inlet pipe (6) arranged on the connecting seat (10), the top end of the air inlet pipe (6) extends to the outside of the connecting seat (10) and is connected to the air outlet end of the air pump, the interior of the outer nozzle (30) is provided with an air supply channel (303) opposite to the position of the clearance hole (305), and the bottom end of the air inlet pipe (6) extends to below the bottom of the connecting seat (10) and is sealed to the upper end of the air supply channel (303), and the inner wall of one side of the outer nozzle (30) is provided with an opening (304) connected to the air supply channel (303).

7. An integrated device for a laser cladding head with coaxial powder feeding as claimed in claim 3 or 6, characterized in that: The connecting member comprises a rotating ring (11) and two docking blocks (9), wherein the rotating ring (11) is rotatably sleeved on the top of the outer wall of the outer nozzle (30), and the two docking blocks (9) are symmetrically fixedly connected to the bottom of the connecting seat (10). Both side edges of the top of the outer nozzle (30) are provided with docking ports (306) for use with the corresponding docking blocks (9). The inner wall of the rotating ring (11) is symmetrically fixedly connected with two clamping blocks (12), and one side of the inner wall of the two docking ports (306) is provided with a receiving notch (307) for use with the corresponding clamping blocks (12). One side of the two docking blocks (9) is provided with a clamping notch (91) for use with the corresponding clamping blocks (12). The tops of the two clamping blocks (12) are provided with threaded connection holes (121), and the bottoms of the two docking blocks (9) are threadedly connected with positioning screws (13) threadedly connected to the corresponding threaded connection holes (121), and the bottom ends of the two positioning screws (13) are fixedly connected with knobs (14).

8. An integrated device for a laser cladding head with coaxial powder feeding as claimed in claim 7, characterized in that: The inner wall of the rotating ring (11) is symmetrically provided with two arc-shaped notches (111), and the two arc-shaped notches (111) are used in conjunction with the two docking ports (306) respectively.

9. The integrated device for a laser cladding head with coaxial powder feeding according to claim 7, characterized in that: The outer walls of the water inlet pipe (5), the air inlet pipe (6), the water outlet pipe (7) and the plurality of powder conveying pipes (2) are all fixedly sleeved with a sealing collar (15); the top of the sealing collar (15) is tightly fitted with the bottom of the connecting seat (10); the bottom of the sealing collar (15) is fixedly connected with a sealing ring (16); and the upper ends of the water inlet groove (203), the air supply channel (303), the water outlet groove (31) and the plurality of powder channels (301) are all provided with a clamping groove (17) which is sealed and clamped with the corresponding sealing collar (15).

10. The integrated device for a laser cladding head with coaxial powder feeding according to claim 6, characterized in that: The outer wall of the outer nozzle (30) is provided with a plurality of strip-shaped through grooves (308) at equal intervals in an annular shape.

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