CN215846314U

CN215846314U - Vortex pressure nozzle for laser cutting machine

Info

Publication number: CN215846314U
Application number: CN202121864304.4U
Authority: CN
Inventors: 刘文杰
Original assignee: Suzhou Zhiguangfei Precision Machinery Technology Co ltd
Current assignee: Suzhou Zhiguangfei Precision Machinery Technology Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-02-18
Anticipated expiration: 2031-08-10

Abstract

The utility model relates to a vortex pressure nozzle for a laser cutting machine, which comprises a nozzle body and a gas channel arranged in the nozzle body, wherein the nozzle body comprises a threaded part, an installation part and a heat dissipation part which are sequentially arranged from top to bottom, the threaded part, the installation part, the heat dissipation part and the gas channel are coaxially arranged, the nozzle body is integrally formed, a vortex cavity which is sunken upwards from the bottom surface is arranged on the bottom surface of the heat dissipation part, the horizontal section of the vortex cavity is circular, the vortex cavity is coaxially arranged with the gas channel, the bottom end of the gas channel is communicated with the vortex cavity, the diameter of the vortex cavity is larger than that of the bottom end of the gas channel, the vortex cavity is arranged at the bottom of the vortex pressure nozzle, gas blown out from the gas channel can form a vortex, a pressure pad is formed between the vortex cavity and the surface of a workpiece, the gas pressure is improved, the energy consumption of the device is reduced, and the device can be prevented from being damaged due to splashing of slag, the cost of production and processing is reduced.

Description

Vortex pressure nozzle for laser cutting machine

Technical Field

The utility model relates to a vortex pressure nozzle for a laser cutting machine, which is suitable for the field of laser cutting.

Background

Laser cutting is an efficient precision cutting method using a laser beam with high energy density as a heat source, and is one of important aspects of material laser processing technology application. The laser beam irradiates the surface of the workpiece to enable the workpiece to reach a melting point or a boiling point, and simultaneously, the high-pressure gas coaxial with the laser beam blows away the melted or gasified metal to prevent the residual accumulation of the melt. The pressure value that current laser cutting equipment needs when cutting some special panels can be great, and partial peak value can reach the high value pressure about 25kPa to guarantee the effect and the quality of cutting, nevertheless can lead to the power of equipment to increase greatly like this, cause a large amount of energy extravagant, increase production and processing's cost, high velocity air also makes the slag splash easily simultaneously, brings a lot of potential safety hazards for the production and processing of enterprise.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a vortex pressure nozzle for a laser cutting machine.

The technical scheme adopted by the utility model is as follows: a vortex pressure nozzle for a laser cutting machine comprises a nozzle body and a gas channel arranged inside the nozzle body, wherein the nozzle body comprises a threaded part, an installation part and a heat dissipation part which are sequentially arranged from top to bottom, the threaded part, the installation part, the heat dissipation part and the gas channel are coaxially arranged, laser and gas can be conveniently guided, the nozzle body is integrally formed, the strength of the nozzle body is ensured, a vortex cavity which is sunken upwards from the bottom surface is formed in the bottom surface of the heat dissipation part, the cross section of the horizontal direction of the vortex cavity is circular, the vortex cavity is coaxially arranged with the gas channel, the bottom end of the gas channel is communicated with the vortex cavity, the diameter of the vortex cavity is larger than that of the bottom end of the gas channel, when gas is blown to the surface of a workpiece from the gas channel, part of the gas can ascend from the surface of the workpiece to the vortex cavity upwards, then vortex is formed downwards along the gas blown out from the gas channel, a pressure pad is formed between the vortex cavity and the surface of the workpiece, the gas has good guarantee effect on the cut surface of the workpiece, the gas quantity is fully utilized, the pressure, the flow rate and the coverage surface of the gas are improved, the cutting processing efficiency is higher, more energy is saved, the slag generated in the cutting process is smoothly discharged from the cut, and the production safety is improved.

Furthermore, the heat dissipation part is a rotating body formed by rotating the circular arc around the central axis of the nozzle body, the circle center of the circular arc and the central axis of the nozzle body are respectively positioned at two sides of the circular arc, and the diameter of the upper end face of the heat dissipation part is larger than that of the lower end face of the heat dissipation part, so that heat generated during cutting is dissipated quickly, the heat dissipation performance of the nozzle is improved, and meanwhile, the nozzle is prevented from colliding with a workpiece when moving, and the avoidance performance of the nozzle is improved.

Furthermore, the side of the mounting part comprises a plurality of curved surfaces and planes which are arranged at intervals.

Furthermore, the curved surfaces are located on the same cylindrical surface, the center line of the cylindrical surface is coincident with the axis line of the installation part, the planes are parallel to the central axis of the nozzle body, the curved surfaces and the planes are distributed in a circumferential array along the central axis of the nozzle body, and the distance between the planes and the central axis of the nozzle body is smaller than that between the curved surfaces and the central axis of the nozzle body, so that the side surfaces of the installation part form a plurality of clamping planes, and the nozzle is convenient to disassemble and install.

Further, gas passage includes from the top down connects gradually and coaxial setting's first air flue and second air flue, and first air flue all is the round platform shape with the second air flue.

Furthermore, the diameter of the upper end of the first air passage is larger than the diameter of the lower end of the first air passage and larger than the diameter of the lower end of the second air passage, the diameter of the lower end of the first air passage is equal to the diameter of the upper end of the second air passage and smaller than the diameter of the lower end of the second air passage, the first air passage enables gas to be gathered to form main gas flow, slag formed by cutting is convenient to blow away, part of gas is diffused and blown out through the second air passage, a vortex is convenient to form between the vortex cavity and the surface of a workpiece, a pressure pad is further formed, and cutting quality is improved.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the vortex pressure nozzle for the laser cutting machine, the vortex cavity is arranged at the bottom of the vortex pressure nozzle, when gas is blown to the surface of a workpiece along the gas channel, part of the gas can reversely rise to the vortex cavity and then moves downwards along the gas blown out from the gas channel to form a vortex, so that a pressure pad is formed between the vortex cavity and the surface of the workpiece, the gas pressure is improved, the energy consumption of equipment can be reduced on the premise of ensuring the cutting effect, the production and processing cost is reduced, meanwhile, slag generated during cutting can be smoothly discharged from a cut, and the damage of the equipment caused by the splashing of the slag is prevented; the structure of the downward flaring of second air flue can make partial gas along the lateral wall diffusion of second air flue, the formation of the vortex of being more convenient for, the quick loss of heat that produces when the circular arc side of heat dissipation part indent can make the cutting improves the heat dispersion of nozzle, also prevents simultaneously when the nozzle from removing to collide with the work piece, improves its dodging nature.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic structural view of one embodiment of an eddy pressure nozzle for a laser cutting machine according to the present invention;

fig. 2 is a cross-sectional view of the embodiment shown in fig. 1.

Wherein the reference numerals are as follows:

1. a nozzle body; 11. a threaded portion; 12. an installation part; 121. a curved surface; 122. a plane; 13. a heat dissipating section; 131. a vortex chamber; 2. a gas channel; 21. a first air passage; 22. a second air passage.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper" and "lower" related to the direction description are defined according to the direction of the nozzle relative to the workpiece in normal use, specifically, in normal use, the side away from the workpiece is "upper", and in reverse, the side is "lower"; the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, the vortex nozzle for a laser cutting machine in the present embodiment includes a nozzle body 1, and a gas passage 2 provided inside the nozzle body 1.

The nozzle body 1 comprises a threaded part 11, an installation part 12 and a heat dissipation part 13 which are sequentially arranged from top to bottom and are integrally formed, the strength of the nozzle body 1 is ensured, the threaded part 11, the installation part 12, the heat dissipation part 13 and a gas channel 2 are coaxially arranged, laser and gas can be conveniently guided, the heat dissipation part 13 is a rotating body formed by rotating an arc around the central axis of the nozzle body 1, the circle center of the arc and the central axis of the nozzle body 1 are respectively positioned at two sides of the arc, the diameter of the upper end face of the heat dissipation part 13 is larger than that of the lower end face of the heat dissipation part, heat generated during cutting can be quickly dissipated, the heat dissipation performance of the nozzle body 1 is improved, meanwhile, the nozzle body 1 is prevented from colliding with a workpiece when moving, the avoidance performance of the nozzle body is improved, the bottom face of the heat dissipation part 13 is provided with an eddy current cavity 131 which is sunken upwards from the bottom face, and the cross section of the eddy current cavity 131 in the horizontal direction is circular, vortex chamber 131 and gas channel 2 coaxial setting, and the bottom and the vortex chamber 131 intercommunication of gas channel 2, the diameter of vortex chamber 131 is greater than the diameter of gas channel 2 bottom, when gaseous from gas channel 2 blows the work piece surface, part gas can rise to vortex chamber 131 from the work piece surface reversal, the gaseous downward vortex that forms that blows out in the gas channel 2 again, form the pressure pad between vortex chamber 131 and work piece surface, make gaseous play good guarantee effect to the work piece cut surface, make full use of gas quantity, improve gaseous pressure, the velocity of flow and cover face, make the efficiency of cutting processing higher, it is more energy-conserving, also make the smooth follow cut of the slag that produces discharge during the cutting, improve production safety.

The gas channel 2 comprises a first gas channel 21 and a second gas channel 22 which are sequentially connected from top to bottom and coaxially arranged, the first gas channel 21 and the second gas channel 22 are both in a circular truncated cone shape, the diameter of the upper end of the first gas channel 21 is larger than the diameter of the lower end of the first gas channel and larger than the diameter of the lower end of the second gas channel 22, the diameter of the lower end of the first gas channel 21 is equal to the diameter of the upper end of the second gas channel 22 and smaller than the diameter of the lower end of the second gas channel 22, and gas can be converged to form main gas flow when passing through the first gas channel 21, so that slag formed by cutting can be blown away conveniently; when the gas passes through the second gas passage 22, part of the gas can be diffused along the second gas passage 22, so that a vortex is formed between the vortex cavity 131 and the surface of the workpiece, the gas pressure is improved, and the cutting quality is further improved.

In a more preferred embodiment, the side surface of the mounting portion 12 includes a plurality of curved surfaces 121 and flat surfaces 122 arranged at intervals, the curved surfaces 121 are all located on the same cylindrical surface, the center line of the cylindrical surface coincides with the axial lead of the mounting portion 12, the flat surfaces 122 are all parallel to the central axis of the nozzle body 1, the curved surfaces 121 and the flat surfaces 122 are all distributed in a circumferential array along the central axis of the nozzle body 1, and the distance between the flat surfaces 122 and the central axis of the nozzle body 1 is smaller than the distance between the curved surfaces 121 and the central axis of the nozzle body 1, so that a plurality of clamping planes are formed on the side surface of the mounting portion 12, and the nozzle body 1 is convenient to detach and mount.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the utility model, and not to limit the scope of the utility model, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides an eddy pressure nozzle for laser cutting machine, is in including nozzle body (1), setting the inside gas channel (2) of nozzle body (1), nozzle body (1) includes screw thread portion (11), installation department (12), heat dissipation portion (13) that set gradually under to from last, screw thread portion (11) installation department (12) heat dissipation portion (13) and the equal coaxial setting of gas channel (2), nozzle body (1) integrated into one piece, its characterized in that: the heat dissipation device is characterized in that a vortex cavity (131) which is recessed upwards from the bottom surface is formed in the bottom surface of the heat dissipation portion (13), the cross section of the vortex cavity (131) in the horizontal direction is circular, the vortex cavity (131) and the gas channel (2) are coaxially arranged, the bottom end of the gas channel (2) is communicated with the vortex cavity (131), and the diameter of the vortex cavity (131) is larger than that of the bottom end of the gas channel (2).

2. The vortex nozzle for a laser cutting machine according to claim 1, characterized in that: the heat dissipation part (13) is a rotating body formed by rotating an arc around the central axis of the nozzle body (1), and the circle center of the arc and the central axis of the nozzle body (1) are respectively positioned at two sides of the arc.

3. The vortex nozzle for a laser cutting machine according to claim 2, characterized in that: the diameter of the upper end face of the heat dissipation part (13) is larger than that of the lower end face thereof.

4. The vortex nozzle for a laser cutting machine according to claim 1, characterized in that: the side surface of the mounting part (12) comprises a plurality of curved surfaces (121) and planes (122) which are arranged at intervals.

5. The vortex nozzle for a laser cutting machine according to claim 4, characterized in that: the curved surfaces (121) are all located on the same cylindrical surface, the center line of the cylindrical surface is overlapped with the axis line of the installation part (12), and the planes (122) are all parallel to the central axis of the nozzle body (1).

6. The vortex nozzle for a laser cutting machine according to claim 4, characterized in that: the curved surface (121) and the plane (122) are distributed along the central axis of the nozzle body (1) in a circumferential array, and the distance between the plane (122) and the central axis of the nozzle body (1) is smaller than the distance between the curved surface (121) and the central axis of the nozzle body (1).

7. The vortex nozzle for a laser cutting machine according to claim 1, characterized in that: the gas passage (2) comprises a first gas passage (21) and a second gas passage (22) which are sequentially connected from top to bottom and coaxially arranged, and the first gas passage (21) and the second gas passage (22) are both in a circular truncated cone shape.

8. The vortex nozzle for a laser cutting machine according to claim 7, wherein: the diameter of the upper end of the first air passage (21) is larger than that of the lower end thereof and is larger than that of the lower end of the second air passage (22).

9. The vortex nozzle for a laser cutting machine according to claim 7, wherein: the diameter of the lower end of the first air passage (21) is equal to the diameter of the upper end of the second air passage (22) and is smaller than the diameter of the lower end of the second air passage (22).