CN215481270U

CN215481270U - Three-point laser cladding nozzle

Info

Publication number: CN215481270U
Application number: CN202121876921.6U
Authority: CN
Inventors: 毛杰; 王凯
Original assignee: Ningbo Tusheng Laser Technology Co ltd
Current assignee: Ningbo Haitian Laser Technology Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-01-11
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses a three-point laser cladding nozzle, which comprises an inner core and an outer sleeve sleeved on the inner core, wherein a laser channel for laser ejection is arranged from the inner core to the front end of the outer sleeve; the coat is equipped with and send the powder pipeline, and the number of sending the powder pipeline is 3. The mixture of metal powder and gas gets into from sending the powder pipeline, assembles in the focus of laser passageway, and low-temperature cooling water gets into from input channel, and high temperature cooling water discharges from output channel, wherein forms two cooling tanks of first coolant liquid runner and second coolant liquid runner, and low-temperature cooling water and inner core and overcoat direct contact take away a large amount of heats, make overcoat and inner core all keep the lower temperature. Compared with the prior art, the cooling device can directly cool the inner core and the outer sleeve.

Description

Three-point laser cladding nozzle

Technical Field

The utility model belongs to the field of laser cladding nozzles, and particularly relates to a three-point laser cladding nozzle.

Background

The laser cladding technology is a new surface modification technology, and the processing process is a technological method that external materials are added into a molten pool formed by a substrate after laser irradiation in a synchronous or material presetting mode, and the external materials and the molten pool are rapidly solidified together to form a coating layer.

When laser cladding is performed, the head of the nozzle can absorb a large amount of heat due to unavoidable reasons such as workpiece reflection, light source heat radiation and the like, so that the nozzle generates heat. Current traditional radiating mode is through connecting between nozzle and main part, carries out the heat transfer and dispels the heat, or sets up single water route, takes the heat out, but the unable direct cooling of overcoat and interior mouth leads to the life greatly reduced of overcoat or interior mouth, simultaneously greatly reduced a series of problems such as laser cladding's effect.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a three-point laser cladding nozzle which is reasonable in structural layout and can directly cool an outer sleeve and an inner core, aiming at the current situation of the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a three-point laser cladding nozzle comprises an inner core and an outer sleeve sleeved on the inner core, wherein a laser channel for laser ejection is arranged from the inner core to the front end of the outer sleeve; the coat is equipped with and send the powder pipeline, and the number of sending the powder pipeline is 3. The laser channel is of a convolute structure and therefore has a central axis.

In order to optimize the technical scheme, the adopted measures further comprise:

the first cooling liquid flow channel and the second cooling liquid flow channel are respectively annular and are arranged on the periphery of the inner core in a surrounding mode, so that the cooling liquid can be cooled around the inner wall of the outer sleeve and the outer wall of the inner core.

The input channel and the output channel are arranged at opposite positions on two sides of the laser channel, so that the distance from the input channel to the output channel is as long as possible.

The first flow guide channel and the second flow guide channel are positioned at opposite positions on two sides of the laser channel, so that the distance from the first flow guide channel to the second flow guide channel is lengthened as far as possible.

The axes of the first flow guide channel, the second flow guide channel, the input channel and the output channel are positioned on the same section of the nozzle, so that water in the input channel can directly rush into the first flow guide channel, and water in the second flow guide channel can directly rush into the output channel.

The input channel comprises a first input pipe and a second input pipe which are sequentially butted from the outside of the inner core to the first cooling liquid channel, and the output channel comprises a first output pipe and a second output pipe which are sequentially butted from the outside of the inner core to the first cooling liquid channel;

the second input pipe and the second output pipe are parallel to the central axis of the laser channel, the first input pipe and the first output pipe are arranged at acute angles with the central axis of the laser channel respectively, and the cooling liquid impacted at high speed enters the second input pipe from the inclined first input pipe to cause collision and turning, so that the speed reduction effect can be achieved.

The second cooling liquid flow channel is arranged on the inner wall of the outer sleeve, and particularly, an annular groove is formed in the inner wall of the outer sleeve and serves as the second cooling liquid flow channel.

A first sealing ring and a second sealing ring are clamped between the inner core and the outer sleeve, and the first cooling liquid flow channel and the second cooling liquid flow channel are both located between the first sealing ring and the second sealing ring.

And a threaded connection structure is arranged between the inner core and the outer sleeve.

The first flow guide channel and the second flow guide channel are respectively positioned on the outer wall of the inner core in an open mode.

Compared with the prior art, the three-point laser cladding nozzle comprises an inner core and an outer sleeve sleeved on the inner core, wherein a laser channel for laser ejection is arranged from the inner core to the front end of the outer sleeve; the coat is equipped with and send the powder pipeline, and the number of sending the powder pipeline is 3. The mixture of metal powder and gas gets into from sending the powder pipeline, assembles in the focus of laser passageway, and low-temperature cooling water gets into from input channel, and high temperature cooling water discharges from output channel, wherein forms two cooling tanks of first coolant liquid runner and second coolant liquid runner, and low-temperature cooling water and inner core and overcoat direct contact take away a large amount of heats, make overcoat and inner core all keep the lower temperature. Compared with the prior art, the cooling device can directly cool the inner core and the outer sleeve.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is an exploded schematic view of fig. 3.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Fig. 1 to 4 are schematic structural views of the present invention.

Wherein the reference numerals are: the powder feeding device comprises an inner core 1, an outer sleeve 2, a powder feeding pipeline 3, an input channel 4, a first input pipe 41, a second input pipe 42, a first cooling liquid flow channel 51, a second cooling liquid flow channel 52, a first flow guide channel 53, a second flow guide channel 54, an output channel 6, a first output pipe 61, a second output pipe 62, a first sealing ring 71, a second sealing ring 72, a threaded connection structure 8 and a laser channel 9.

Fig. 1 to 4 are schematic structural views illustrating a three-point laser cladding nozzle according to the present invention, which includes an inner core 1 and an outer sheath 2 sleeved on the inner core 1, wherein a laser channel 9 for emitting laser is provided from the inner core 1 to the front end of the outer sheath 2, a first cooling liquid channel 51 and a second cooling liquid channel 52 are provided between the inner core 1 and the outer sheath 2, the first cooling liquid channel 51 is provided with an input channel 4 and an output channel 6, and a first flow guide 53 and a second flow guide 54 are connected between the first cooling liquid channel 51 and the second cooling liquid channel 52; the outer sleeve 2 is provided with powder feeding pipelines 3, and the number of the powder feeding pipelines 3 is 3. The laser channel 9 is of a convolute configuration and therefore has a central axis.

In the embodiment, as shown in fig. 3 and 4, the first coolant flow passage 51 and the second coolant flow passage 52 are respectively annular and are provided around the outer periphery of the core 1, so that the coolant can be cooled around the inner wall of the jacket 2 and the outer wall of the core 1.

In the embodiment, as shown in fig. 3 and 4, the input channel 4 and the output channel 6 are located at opposite positions on both sides of the laser channel 9, so that the distance from the input channel 4 to the output channel 6 is as long as possible.

In an embodiment, as shown in fig. 3 and 4, the first flow leader 53 and the second flow leader 54 are located at opposite positions on both sides of the laser tunnel 9, so that the distance from the first flow leader 53 to the second flow leader 54 is as long as possible.

In the embodiment, as shown in fig. 3 and 4, the axes of the first flow guiding channel 53, the second flow guiding channel 54, the input channel 4 and the output channel 6 are located on the same section of the nozzle, which is beneficial to directly wash the water in the input channel 4 into the first flow guiding channel 53 and the water in the second flow guiding channel 54 into the output channel 6.

In the embodiment, as shown in fig. 3 and 4, the inlet passage 4 includes a first inlet pipe 41 and a second inlet pipe 42 which are sequentially connected from the outside of the core 1 to the first coolant flow passage 51, and the outlet passage 6 includes a first outlet pipe 61 and a second outlet pipe 62 which are sequentially connected from the outside of the core 1 to the first coolant flow passage 51;

the second input pipe 42 and the second output pipe are parallel to the central axis of the laser channel 9, the first input pipe 41 and the first output pipe 61 are respectively arranged at acute angles with the central axis of the laser channel 9, and the cooling liquid impacted at high speed enters the second input pipe 42 from the inclined first input pipe 41 to cause collision and turning, so that the speed reduction effect can be achieved.

In the embodiment, as shown in fig. 3 and 4, the second cooling liquid flow passage 52 is provided on the inner wall of the jacket 2, specifically, an annular groove is formed on the inner wall of the jacket 2 as the second cooling liquid flow passage 52.

In the embodiment, as shown in fig. 3 and 4, a first seal ring 71 and a second seal ring 72 are further interposed between the inner core 1 and the outer sheath 2, and the first cooling liquid flow passage 51 and the second cooling liquid flow passage 52 are both located between the first seal ring 71 and the second seal ring 72. The first seal ring 71 and the second seal ring 72 can prevent the coolant in the first coolant flow passage 51 and the second coolant flow passage 52 from seeping out, specifically, from seeping out from the gap between the core 1 and the jacket 2.

In the embodiment, as shown in fig. 3 and 4, a threaded connection structure 8 is arranged between the inner core 1 and the outer sleeve 2.

In the embodiment, as shown in fig. 3 and 4, the first flow guiding channel 53 and the second flow guiding channel 54 are respectively located on the outer wall of the core 1 in an open manner, which has the advantages that: the processing is convenient, the cleaning and the maintenance are convenient, and the cooling liquid in the first guide flow channel 53 and the second guide flow channel 54 can be simultaneously contacted with the inner core 1 and the outer sleeve 2.

The working principle of the utility model is as follows:

the cooling liquid enters the second input pipe 42 from the first input pipe 41, wherein one path of the cooling liquid is merged into the first cooling liquid flow passage 51, the other path of the cooling liquid enters the second cooling liquid flow passage 52 through the first flow guide 53, the cooling liquid in the second cooling liquid flow passage 52 enters the second output pipe 62 through the second flow guide 54, the cooling liquid in the first cooling liquid flow passage 51 also enters the second output pipe 62, and the cooling liquid in the second output pipe 62 enters the first output pipe 61 and is discharged.

While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by one skilled in the art without departing from the scope of the utility model.

Claims

1. The utility model provides a three-point type laser cladding nozzle, includes inner core (1) to and overcoat (2) of cover on inner core (1), be equipped with laser channel (9) that supply the laser to jet out from inner core (1) to overcoat (2) front end, characterized by: a first cooling liquid flow channel (51) and a second cooling liquid flow channel (52) are arranged between the inner core (1) and the outer sleeve (2), the first cooling liquid flow channel (51) is provided with an input channel (4) and an output channel (6), and a first guide channel (53) and a second guide channel (54) are connected between the first cooling liquid flow channel (51) and the second cooling liquid flow channel (52); the outer sleeve (2) is provided with powder feeding pipelines (3), and the number of the powder feeding pipelines (3) is 3.

2. The three-point laser cladding nozzle of claim 1, wherein: the first cooling liquid flow channel (51) and the second cooling liquid flow channel (52) are respectively annular and are annularly arranged on the periphery of the inner core (1).

3. The three-point laser cladding nozzle of claim 2, wherein: the input channel (4) and the output channel (6) are positioned at opposite positions on two sides of the laser channel (9).

4. The three-point laser cladding nozzle of claim 3, wherein: the first flow guide channel (53) and the second flow guide channel (54) are located at opposite positions on two sides of the laser channel (9).

5. The three-point laser cladding nozzle of claim 4, wherein: the axes of the first guide channel (53), the second guide channel (54), the input channel (4) and the output channel (6) are positioned on the same section plane of the nozzle.

6. The three-point laser cladding nozzle of claim 5, wherein: the input channel (4) comprises a first input pipe (41) and a second input pipe (42) which are sequentially butted from the outside of the inner core (1) to the first cooling liquid flow channel (51), and the output channel (6) comprises a first output pipe (61) and a second output pipe (62) which are sequentially butted from the outside of the inner core (1) to the first cooling liquid flow channel (51);

the second input pipe (42) and the second output pipe are parallel to the central axis of the laser channel (9), and the first input pipe (41) and the first output pipe (61) are respectively arranged at acute angles with the central axis of the laser channel (9).

7. The three-point laser cladding nozzle of claim 6, wherein: the second cooling liquid flow channel (52) is arranged on the inner wall of the outer sleeve (2).

8. The three-point laser cladding nozzle of claim 7, wherein: still accompany first sealing washer (71) and second sealing washer (72) between inner core (1) and overcoat (2), first coolant liquid runner (51) and second coolant liquid runner (52) all be located between first sealing washer (71) and second sealing washer (72).

9. The three-point laser cladding nozzle of claim 8, wherein: and a threaded connection structure (8) is arranged between the inner core (1) and the outer sleeve (2).

10. The three-point laser cladding nozzle of claim 9, wherein: the first flow guide channel (53) and the second flow guide channel (54) are respectively positioned on the outer wall of the inner core (1) in an open mode.