External laser cladding powder feeding nozzle of powder pipeline

Abstract

The utility model discloses an external laser cladding powder feeding nozzle for a powder pipeline, which comprises a circular truncated cone-shaped main body, a connecting section is arranged in the middle of the end face of the large-diameter end of the circular truncated cone-shaped main body in an upward extending manner, and an external thread is arranged on the outer wall of the connecting section. The connecting section is connected with an internal thread on the laser cladding head through an external thread, a light emitting cavity is formed in the middle of the circular-truncated-cone-shaped main body and the middle of the connecting section in a full-length mode, three mounting grooves are formed in the outer wall face of the circular-truncated-cone-shaped main body in the generatrix direction of the circular-truncated-cone-shaped main body, a powder feeding copper pipe is mounted in each mounting groove, and the powder feeding copper pipe is connected with the laser cladding head through an external thread. The powder feeding copper pipes are evenly arranged at intervals in the same circumferential direction, the central axes of the three powder feeding copper pipes intersect at a convergent point on the central axis of the light emitting cavity, and the three powder feeding copper pipes are fixedly connected with the circular-truncated-cone-shaped body through a connecting structure. And the requirements of quick cleaning, maintenance and replacement can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a powder feeding nozzle, especially to a laser cladding powder feeding nozzle. BACKGROUND

[0002] Laser cladding uses various high-performance powders as surface repair and strengthening materials, and the powder feeding nozzle is manufactured by machining, wherein the pipeline for conveying powder materials is built-in and formed by high-precision drilling. Although the machining precision is high, the powder is gathered and concentrated, which is beneficial to the forming quality of laser cladding, but in the long-term use process, the inner wall of the pipeline is eroded and worn, the pipeline is difficult to clean and maintain, the replacement is troublesome and the cost is high, and the single aperture cannot meet the requirements of laser cladding of various sizes. The above-mentioned shortcomings have affected the production efficiency of laser cladding. SUMMARY

[0003] The utility model aims at overcoming the shortcomings of the prior art and providing a powder feeding nozzle with external powder pipeline for laser cladding, which can realize quick maintenance and replacement of the powder feeding pipeline and is suitable for laser cladding of various sizes.

[0004] To achieve the above functions, the utility model adopts the technical scheme of:

[0005] The utility model relates to a powder feeding nozzle with external powder pipeline for laser cladding, which comprises a circular truncated cone-shaped main body, a connecting section extending upward in the middle of the end face of the large end of the diameter of the circular truncated cone-shaped main body, an external thread provided on the outer wall of the connecting section, the connecting section being connected with the internal thread on the laser cladding head through the external thread, an out-light cavity being longitudinally opened in the middle of the circular truncated cone-shaped main body and the connecting section, three installation grooves being opened on the outer wall surface of the circular truncated cone-shaped main body along the generatrix direction of the circular truncated cone-shaped main body, one powder feeding copper pipe being respectively installed in each installation groove, the powder feeding copper pipes being uniformly and intervally arranged along the same circumferential direction, the central axes of the three powder feeding copper pipes converging at a converging point on the central axis of the out-light cavity, and the three powder feeding copper pipes being fixedly connected with the circular truncated cone-shaped main body through the connecting structure.

[0006] The utility model has the advantages that the powder feeding nozzle is installed at the end of the laser cladding head, three external powder feeding copper pipes which are easy to maintain and replace are used for three-way powder feeding, and the powder feeding copper pipes converge at a point along the central axis of the out-light cavity of the powder feeding nozzle. When the laser is turned on, the laser beam will melt the powder at the converging point and realize laser cladding on the surface of the metal workpiece. The powder feeding pipeline can be quickly cleaned, maintained and replaced to meet the requirements of laser cladding of various sizes in the long-term use process. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 is the side sectional view of the powder feeding nozzle with external powder pipeline for laser cladding of the utility model;

[0008] Figure 2It is the powder pipeline external laser cladding powder feeding nozzle's plan view of the utility model. DETAILED DESCRIPTION

[0009] The utility model structure is explained below in conjunction with the drawings.

[0010] As shown in the drawings, the utility model discloses a kind of powder pipeline external laser cladding powder feeding nozzle, including circular truncated cone main part, the diameter big end of the circular truncated cone main part is extended and set with connecting section in the middle of end face, outer thread 10 is provided on the outer wall of the connecting section, the connecting section is connected with the inner thread on the laser cladding head (the existing structure on the existing laser cladding machine) by outer thread 10, the circular truncated cone main part and connecting section middle length are opened with a light outlet cavity 11, three mounting grooves (such as Figure 2 The first mounting groove 1, the second mounting groove 2, the third mounting groove 3) are opened on the outer wall surface of the circular truncated cone main part along the generatrix direction of the circular truncated cone main part, and one powder feeding copper pipe (such as Figure 2 The first copper pipe 4, the second copper pipe 5, the third copper pipe 6) is respectively installed in each mounting groove.The powder feeding copper pipe is evenly spaced along the same circumferential direction (every interval 120 °).Powder flows out along the direction of copper pipe.Three middle axes 13 of the powder feeding copper pipe meet at the convergence point 7 on the middle axis 12 of light outlet cavity 11.The powder feeding nozzle can be processed from red copper.

[0011] Three powder feeding copper pipes are fixedly connected with the circular truncated cone main part through connecting structure, and the connecting structure can be two annular V-shaped grooves (such as Figure 1 The V-shaped groove 8, the second V-shaped groove 9) are spaced apart upwards and downwards on the circular truncated cone main part along circumferential direction, and iron wire is placed in the two annular V-shaped grooves respectively, and the iron wire locks and fixes three powder feeding copper pipes.

[0012] The working principle of the structure is as follows:

[0013] The powder feeding nozzle is connected with the laser cladding head through outer thread 10, powder is transported to convergence point 7 through three-way powder feeding copper pipe easy to maintain and replace, and laser beam reaches convergence point 7 through light outlet cavity 11, so that powder is melted and cladded on the surface of metal workpiece, to realize the function of laser cladding.

Claims

1. A powder pipe external laser cladding powder feeding nozzle, comprising a truncated cone-shaped body, characterized in that: A connecting section is provided in the middle of the end face of the large diameter end of the truncated cone-shaped body, and an external thread is provided on the outer wall of the connecting section. The connecting section is connected to the internal thread on the laser cladding head through the external thread. A light outlet cavity is provided in the middle of the truncated cone-shaped body and the connecting section. Three mounting grooves are provided on the outer wall surface of the truncated cone-shaped body along the busbar direction of the truncated cone-shaped body. A powder feeding copper tube is respectively installed in each mounting groove. The powder feeding copper tubes are evenly spaced along the same circumferential direction. The central axes of the three powder feeding copper tubes intersect at a convergence point on the central axis of the light outlet cavity. The three powder feeding copper tubes are fixedly connected to the truncated cone-shaped body through a connecting structure.

2. The powder pipeline external laser cladding powder feeding nozzle according to claim 1 is characterized in that: The connection structure is two annular V-shaped grooves spaced apart in the circumferential direction on the truncated cone-shaped main body. Iron wires are placed in the two annular V-shaped grooves respectively, and the iron wires lock and fix the three powder feeding copper tubes.

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