Laser cladding nozzle

Abstract

The utility model relates to the technical field of laser cladding, and discloses a laser cladding nozzle which comprises a nozzle body, a laser channel is formed in the middle of the nozzle body, external threads are formed in the outer wall of the upper end of the nozzle body, and a connecting hole is formed in the outer wall of the end, close to the external threads, of the nozzle body; the sleeve is arranged on the outer wall of the lower end of the nozzle body in a sleeving mode, internal threads are formed in the connecting position of the sleeve and the external threads, an embedded screw hole is formed in the outer wall of the end, close to the internal threads, of the sleeve, and the embedded screw hole penetrates through the inner surface of the upper end of the sleeve. The laser cladding nozzle is provided with the sleeve, the sleeve is used for separating the laser channel from the powder spraying cavity, all parts can be conveniently and independently replaced when the laser channel or the powder spraying cavity is damaged, the production cost is reduced, and the detachable design is convenient for workers to clean and maintain the nozzle body and the sleeve respectively; and the applicability of the nozzle in different working environments is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding, in particular to a laser cladding nozzle. Background Art

[0002] The laser cladding process is a light-powder action process. It is a process in which external materials are added to the molten pool formed by laser irradiation of the substrate by synchronous or pre-setting materials, and the two are quickly solidified together to form a cladding layer. The flow of powder inside and outside the laser cladding nozzle has an important influence on the quality, efficiency, and powder utilization of laser cladding.

[0003] After searching, there is a laser cladding nozzle with the publication number CN212505067U, which includes a nozzle body. A vertically penetrating laser channel is arranged in the center of the nozzle body to solve the problems of small conical gap, easy blockage, uneven powder feeding, etc. The practical nozzle body is an integrated structure. When there is a problem with the laser channel or the powder spraying chamber, the whole body needs to be replaced directly, which increases the production cost. In addition, the integrated structure is not easy to clean and maintain. Therefore, we propose a laser cladding nozzle. Utility Model Content

[0004] The utility model aims to provide a laser cladding nozzle to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a laser cladding nozzle, comprising:

[0006] A nozzle body, wherein a laser channel is provided in the middle of the nozzle body, an external thread is provided on the outer wall of the upper end of the nozzle body, and a connecting hole is provided on the outer wall of one end of the nozzle body close to the external thread;

[0007] A sleeve is sleeved on the outer wall of the lower end of the nozzle body, an internal thread is provided at the connection between the sleeve and the external thread, an embedded screw hole is provided on the outer wall of one end of the sleeve close to the internal thread, and the embedded screw hole penetrates to the inner surface of the upper end of the sleeve, a powder spraying chamber is provided at the lower end of the sleeve, a powder conveying pipe is connected to the upper end opening of the powder spraying chamber, and the other end of the powder spraying chamber penetrates to the outer wall of the lower end of the sleeve.

[0008] Furthermore, the laser channel penetrates to the middle of the nozzle body, and the connecting holes are symmetrically arranged with respect to the central axis of the nozzle body.

[0009] Furthermore, the external thread and the internal thread match each other, and the sleeve is threadedly connected to the nozzle body through the internal thread and the external thread, and the sleeve is threadedly connected to the nozzle body through the embedded screw hole and the connecting hole.

[0010] Furthermore, the powder spraying chamber and the powder conveying pipe are symmetrically arranged with respect to the central axis of the sleeve, and the powder spraying chamber and the powder conveying pipe are connected to each other.

[0011] Furthermore, a throttle valve is installed in the middle of the powder conveying pipe, and a flange is fixed to one end of the powder conveying pipe away from the sleeve.

[0012] Furthermore, the powder conveying pipe is connected to the powder spraying chamber through a flange and a throttle valve.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The laser cladding nozzle is provided with a sleeve, which is used to separate the laser channel from the powder spray chamber, so as to facilitate the individual replacement of each component when the laser channel or the powder spray chamber is damaged, thereby reducing production costs. The detachable design facilitates the staff to clean and maintain the nozzle body and the sleeve separately, thereby enhancing the applicability of the nozzle in different working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the nozzle body and sleeve in the combined state of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the nozzle body of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the sleeve portion of the utility model;

[0018] Figure 4 It is a schematic diagram of the enlarged structure of the powder conveying pipe part of the utility model.

[0019] In the figure: 1. nozzle body; 2. laser channel; 3. external thread; 4. connecting hole; 5. sleeve; 6. internal thread; 7. embedded screw hole; 8. powder spraying chamber; 9. powder conveying pipe; 10. throttle valve; 11. flange. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a laser cladding nozzle through improvement, please refer to Figure 1-Figure 3, comprising: a nozzle body 1, a laser channel 2 is opened in the middle of the nozzle body 1, the laser channel 2 penetrates to the middle of the nozzle body 1, an external thread 3 is opened on the outer wall of the upper end of the nozzle body 1, a connecting hole 4 is opened on the outer wall of one end of the nozzle body 1 close to the external thread 3, and the connecting hole 4 is symmetrically arranged about the central axis of the nozzle body 1, a sleeve 5 is sleeved on the outer wall of the lower end of the nozzle body 1, an internal thread 6 is opened at the connection between the sleeve 5 and the external thread 3, the external thread 3 and the internal thread 6 match each other, and the sleeve 5 is threadedly connected to the nozzle body 1 through the internal thread 6 and the external thread 3, an embedded screw hole 7 is opened on the outer wall of one end of the sleeve 5 close to the internal thread 6, and the embedded screw hole 7 penetrates to the inner surface of the upper end of the sleeve 5, and the sleeve 5 passes through the embedded screw hole 7 and the connecting hole 4 A threaded connection is formed between the sleeve 5 and the nozzle body 1. The sleeve 5 is used to separate the laser channel 2 from the powder spraying chamber 8, which is convenient for replacing each component separately when the laser channel 2 or the powder spraying chamber 8 is damaged, thereby reducing production costs. The detachable design is convenient for the staff to clean and maintain the nozzle body 1 and the sleeve 5 separately, thereby enhancing the applicability of the nozzle in different working environments. A powder spraying chamber 8 is opened at the lower end of the sleeve 5, and a powder conveying pipe 9 is connected to the upper end opening of the powder spraying chamber 8. The powder spraying chamber 8 and the powder conveying pipe 9 are symmetrically arranged about the central axis of the sleeve 5, and the other end of the powder spraying chamber 8 penetrates to the outer wall of the lower end of the sleeve 5, and the powder spraying chamber 8 and the powder conveying pipe 9 are connected. The powder spraying chamber 8 is used to synchronously spray the powder transported by the powder conveying pipe 9 onto the material surface for cladding operations.

[0022] See also Figure 3-Figure 4 A laser cladding nozzle includes: a throttle valve 10 is installed in the middle of a powder conveying pipe 9, a flange 11 is fixed to the end of the powder conveying pipe 9 away from the sleeve 5, and the powder conveying pipe 9 is connected with the powder injection chamber 8 through the flange 11 and the throttle valve 10. The flange 11 is arranged to facilitate the connection between the powder conveying pipe 9 and the pipeline for conveying powder, thereby improving the stability and operability of the connection, and the throttle valve 10 is used to facilitate the control of the powder conveying rate, thereby improving the accuracy of the cladding operation.

[0023] Working principle: For this type of laser cladding nozzle, the staff first sleeves the sleeve 5 on the nozzle body 1 through the internal thread 6 on the inner wall of the sleeve 5 and the external thread 3 on the nozzle body 1. After the matching external thread 3 and internal thread 6 are fully tightened, the connecting hole 4 on the nozzle body 1 is aligned with the embedded screw hole 7 on the sleeve 5, which is convenient for the staff to use fasteners to connect and fasten the sleeve 5 and the nozzle body 1, and it is convenient to disassemble and replace or clean the nozzle body 1 or sleeve 5 separately, which is used for separate replacement after the laser channel 2 or the powder spraying chamber 8 is damaged, which can effectively reduce the production cost. Subsequently, the laser channel 2 and the powder spraying chamber 8 are used to coordinate the laser cladding operation. The powder spraying chamber 8 sprays out the powder transported by the powder conveying pipe 9. The powder conveying rate can be assisted by the throttle valve 10, and the powder conveying pipe 9 is connected to the pipeline through the flange 11. The connection is stable and not easy to detach, which prevents the powder from leaking onto the material plate and affecting the accuracy of the laser cladding operation.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cladding nozzle, characterized in that: include: A nozzle body (1), wherein a laser channel (2) is provided in the middle of the nozzle body (1), an external thread (3) is provided on the upper outer wall of the nozzle body (1), and a connecting hole (4) is provided on the outer wall of one end of the nozzle body (1) close to the external thread (3); A sleeve (5) is sleeved on the outer wall of the lower end of the nozzle body (1); an inner thread (6) is provided at the connection between the sleeve (5) and the outer thread (3); an embedded screw hole (7) is provided on the outer wall of one end of the sleeve (5) close to the inner thread (6), and the embedded screw hole (7) penetrates to the inner surface of the upper end of the sleeve (5); a powder spraying chamber (8) is provided at the lower end of the sleeve (5); a powder conveying pipe (9) is connected to the upper end opening of the powder spraying chamber (8), and the other end of the powder spraying chamber (8) penetrates to the outer wall of the lower end of the sleeve (5).

2. A laser cladding nozzle according to claim 1, characterized in that: The laser channel (2) penetrates to the middle of the nozzle body (1), and the connecting holes (4) are symmetrically arranged with respect to the central axis of the nozzle body (1).

3. The laser cladding nozzle according to claim 1, characterized in that: The external thread (3) and the internal thread (6) match each other, and the sleeve (5) is threadedly connected to the nozzle body (1) through the internal thread (6) and the external thread (3), and the sleeve (5) is threadedly connected to the nozzle body (1) through the embedded screw hole (7) and the connecting hole (4).

4. The laser cladding nozzle according to claim 1, characterized in that: The powder spraying chamber (8) and the powder conveying pipe (9) are symmetrically arranged with respect to the central axis of the sleeve (5), and the powder spraying chamber (8) and the powder conveying pipe (9) are connected to each other.

5. The laser cladding nozzle according to claim 1, characterized in that: A throttle valve (10) is installed in the middle of the powder conveying pipe (9), and a flange (11) is fixed to one end of the powder conveying pipe (9) away from the sleeve (5).

6. The laser cladding nozzle according to claim 5, characterized in that: The powder conveying pipe (9) is connected to the powder spraying chamber (8) via a flange (11) and a throttle valve (10).

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