CN216541466U

CN216541466U - Air cooling device for laser cutting head

Info

Publication number: CN216541466U
Application number: CN202122923835.2U
Authority: CN
Inventors: 李园园; 傅欢
Original assignee: Taier Heavy Industry Co Ltd
Current assignee: Taier Heavy Industry Co Ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-17
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses an air cooling device for a laser cutting head, which comprises a cutting head body, wherein a follow-up sensor body is arranged at the bottom of the cutting head body through an insulation plate, and a locking nut, a ceramic ring and a nozzle are sequentially arranged at the bottom of the follow-up sensor body; the outer side of the follow-up sensor body is covered with an air cooling cover with a hollow structure, and the top of the air cooling cover is attached and connected with the follow-up sensor body; the upper part of the air cooling cover is provided with an air inlet, and the bottom of the air cooling cover is uniformly provided with a plurality of exhaust holes; an air pipe is installed on the air inlet, and the other end of the air pipe is connected with a vortex tube. The utility model can rapidly cool the laser cutting head and the cutting plate, improves the cutting stability, reduces the heat influence of the cutting plate, has the function of preventing cutting splash, and has safe operation, good cooling effect, stable and efficient work.

Description

Air cooling device for laser cutting head

Technical Field

The utility model belongs to the technical field of laser cutting equipment, and relates to an air cooling device for a laser cutting head.

Background

In recent years, with the continuous development of the laser industry, the power of the laser reaches ten thousand watts or even tens of thousands of watts, and the laser is more and more widely applied to the cutting of thick plates. However, when thick plate materials are cut, the laser cutting head generates heat due to the reasons of high cutting power, low speed, heat release of oxygen-assisted cutting and the like, and the cutting quality and stability are affected.

Due to the high power density carried by the laser, when the laser passes through the collimating mirror and the focusing lens, the temperature of the collimating mirror, the focusing lens and the follower sensor is increased even if the collimating mirror and the focusing lens only absorb a very small part of the energy of the laser. At present, the laser cutting head is provided with a cooling system for collimation and focusing, however, a follow-up sensor unit generally lacks a cooling device, so that the cooling device which is provided with a laser cutting head and has high cooling efficiency, safe and stable work is particularly needed.

At present, the existing laser cutting head generally adopts a water cooling device to cool, but because water cooling is a closed loop system, the sealing performance is required to be good, otherwise, the heat generated during water leakage and laser cutting converges to generate vapor, the vapor enters an optical path system and is easy to cause the damage of an optical lens, and meanwhile, the risk of causing electrical short circuit also exists due to water leakage.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems of water cooling of the laser cutting head in the background technology, the utility model provides an air cooling device of the laser cutting head, which can effectively cool the laser cutting head and the cutting plate when the plate is cut by laser, particularly when a thick plate is cut, and improve the cutting quality and the long-term cutting stability.

The technical scheme for solving the technical problem of the utility model is as follows:

the utility model relates to an air cooling device for a laser cutting head, which comprises a cutting head body, wherein a servo sensor body is arranged at the bottom of the cutting head body through an insulation plate, and a locking nut, a ceramic ring and a nozzle are sequentially arranged at the bottom of the servo sensor body; the outer side of the follow-up sensor body is covered with an air cooling cover with a hollow structure, and the top of the air cooling cover is attached and connected with the follow-up sensor body; the upper part of the air cooling cover is provided with an air inlet, and the bottom of the air cooling cover is uniformly provided with a plurality of exhaust holes; an air pipe is installed on the air inlet, and the other end of the air pipe is connected with a vortex tube.

As a further improvement of the technical scheme, spiral grooves are milled on the inner wall of the air cooling cover by taking the air inlet and the exhaust hole as a starting point and a tail end respectively.

As a further improvement of the technical scheme, the air cooling hood comprises an air cooling hood cooling unit and an air cooling hood exhaust unit which are detachably connected up and down.

As a further improvement of the technical scheme, the air cooling cover cooling unit comprises an installation base which is attached to and detachably connected with the top of the servo sensor body and a cylindrical cover body which is arranged at the bottom of the installation base, and the air inlet is arranged at the upper part of the cover body; the air cooling hood exhaust unit comprises a connecting cylinder in threaded connection with the bottom of the hood body and a circular baffle arranged at the bottom of the connecting cylinder; the diameter of the inner circle of the baffle is smaller than that of the cover body, the diameter of the outer circle of the baffle is larger than or equal to that of the cover body, and the exhaust holes are uniformly formed in the baffle on the inner side of the connecting cylinder along the circumference.

As a further improvement of the technical scheme, the mounting seat is provided with a plurality of mounting holes, and the mounting holes are connected and fixed with the top of the servo sensor body through bolts penetrating through the mounting holes.

As a further improvement of the technical scheme, a throttle valve is arranged on an air pipe connected with the air inlet.

As a further improvement of the technical scheme, a vortex tube mounting support used for mounting and fixing the vortex tube is arranged on the vortex tube.

As a further improvement of the technical scheme, the air inlet of the vortex tube is communicated with a compressed air source.

As the further improvement of the technical scheme, a laser head mounting plate is connected and arranged on the cutting head body.

As a further improvement of the technical scheme, the material of the air cooling hood is aluminum alloy.

During the application, pass through the bolt with the air-cooling cover and be connected with the top laminating of follow-up sensor body, with the inlet port and the compressed air source intercommunication of vortex tube, when utilizing this laser cutting head to panel cutting, compressed air gets into the vortex tube cooling back, through the trachea, in the choke valve gets into the air flue that is formed by the swivelling chute in the air-cooling cover to cool down with the heat exchange of laser cutting head, simultaneously with the gaseous through each exhaust hole discharge after the heat transfer, when carminative, gaseous sound cutting panel and to the panel cutting position cooling of blowing.

Compared with the prior art, the cooling device for the laser cutting head is novel in design and reasonable in structure, low-temperature gas is used as a cooling medium, and when the cooling gas is subjected to heat exchange with a laser cutting heating area through a special spiral groove air passage, the cooling is realized, and heat is quickly discharged and taken away; compared with a water cooling device, the laser cutting head cooling device is safer, and the problems of electric short circuit, damage to optical devices and the like caused by water leakage due to poor sealing are not required to be considered; meanwhile, compared with a water cooling device, the laser cutting cooling device provided by the utility model can be opened, closed and flow-regulated at any time, so that the use flexibility and the use effect are effectively improved, the cutting quality and the cutting stability of the plate are improved, and in addition, the laser cutting cooling device provided by the utility model also has the function of preventing cutting splashing and ensures the operation safety by arranging the baffle with the diameter larger than that of the connecting cylinder.

Drawings

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

FIG. 2 is a schematic view of the structure of the air cooling hood of the present invention;

FIG. 3 is a schematic view of an air cooling hood according to another embodiment of the present invention;

FIG. 4 is a schematic view of the separate installation of the cooling unit of the air-cooled hood and the exhaust unit of the air-cooled hood according to the present invention;

FIG. 5 is a schematic view of a prior art laser cutting head;

in the figure: 1. an air-cooling hood cooling unit; 2. an air-cooling hood exhaust unit; 3. a throttle valve; 4. an air tube; 5. a vortex tube mount; 6. a vortex tube; 7. a laser head mounting plate; 8. a cutting head body; 9. an insulating plate; 10. A servo sensor body; 11. a ceramic ring; 12. a nozzle; 13. a lock nut; 14. an air inlet; 15. An exhaust hole; 16. a baffle plate; 17. a mounting seat; 18. a cover body; 19. a helical groove; 20. mounting holes; 21. An air-cooling hood; 22. a connecting cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer" and the like used in the specification and claims of the present disclosure are used only to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships are changed accordingly. The present invention is not described in detail, but is known to those skilled in the art.

As shown in fig. 1 to 5, the laser cutting head of the present invention comprises a cutting head body 8, a servo sensor body 10 is disposed at the bottom of the cutting head body 8 through an insulation plate 9, and a lock nut 13, a ceramic ring 11 and a nozzle 12 are sequentially disposed at the bottom of the servo sensor body 10; the innovation of the utility model is that the outside of the follow-up sensor body 10 is covered with an air cooling cover 21 with a hollow structure, and the top of the air cooling cover 21 is attached and connected with the follow-up sensor body 10; the upper part of the air cooling cover 21 is provided with an air inlet 14, and the bottom of the air cooling cover is uniformly provided with a plurality of exhaust holes 15; an air pipe 4 is arranged on the air inlet 4, and the other end of the air pipe 4 is connected with a vortex tube 6; an air pipe 4 is installed on the air inlet 4, the other end of the air pipe 4 is connected with a cooling gas outlet of a vortex tube 6, and an air inlet of the vortex tube 6 is communicated with a compressed air source. When the plate is cut by laser, compressed air is cooled by the vortex tube 6 and then is sent into the air cooling cover 21 from the air inlet 14, then exchanges heat with the laser heating area, and is exhausted from the exhaust holes 15 at the bottom of the air cooling cover 21, and meanwhile, the exhausted gas is blown to the cut plate and further reduces the temperature of the plate cutting area. Further, in the present embodiment, the air cooling cover 21 is made of an aluminum alloy material, and is light, easy to install, and effective.

In this embodiment, spiral grooves 19 are milled on the inner wall of the air cooling cover 21 starting from the air inlet 14 and the air outlet 15 and ending from the air inlet and the air outlet, respectively, and spiral air passages are formed by the spiral grooves 19, and heat exchange is performed by using cooling gas to travel downward in a spiral direction.

In order to facilitate installation and maintenance of the air-cooling hood 21, the air-cooling hood 21 in the present embodiment includes an air-cooling hood cooling unit 1 and an air-cooling hood exhaust unit 2 detachably connected up and down, and the air-cooling hood 2 may be detached during maintenance. Further, the air cooling hood cooling unit 1 includes an installation seat 17 attached to and detachably connected to the top of the servo sensor body 10 and a cylindrical hood 18 disposed at the bottom of the installation seat 17, a spiral groove 19 is disposed on the hood 18, the diameter of the inner side of the hood 18 is slightly larger than the diameter of the outer side of the servo sensor body 10, the air cooling hood cooling unit can be attached to the outer side of the servo sensor body 10 and installed, and the air inlet 14 is disposed at the upper portion of the hood 18; the air cooling hood exhaust unit 2 comprises a connecting cylinder 22 in threaded connection with the bottom of the hood body 18 and an annular baffle plate 16 arranged at the bottom of the connecting cylinder 22; the diameter of the inner circle of the baffle plate 16 is smaller than that of the cover body 18, the diameter of the outer circle of the baffle plate is larger than or equal to that of the cover body 18, and the exhaust holes 15 are uniformly arranged on the baffle plate 16 on the inner side of the connecting cylinder 22 along the circumference. Generally, the outer diameter of the baffle 16 is larger than the diameter of the cover 18, i.e. the baffle 16 protrudes outward to play a role of splash prevention during laser cutting.

In this embodiment, the mounting base 17 is provided with a plurality of mounting holes 20, and the mounting holes 20 are connected and fixed with the servo sensor body 10 through bolts, so that the mounting base is convenient to disassemble and assemble.

In order to adjust the flow of the cooling gas, a throttle valve 3 is provided on the gas pipe 4 connected at the gas inlet 14.

In this embodiment, a vortex tube mounting support 5 for mounting and fixing the vortex tube 6 is arranged on the vortex tube 6.

In this embodiment, the cutting head body 8 is provided with a laser head mounting plate 7 in a connecting manner, and is used for mounting the cutting head body 8.

Claims

1. The utility model provides a laser cutting head air cooling heat sink, the laser cutting head includes cutting head body (8), and cutting head body (8) bottom is provided with servo sensor body (10) through insulation board (9), and servo sensor body (10) bottom has set gradually lock nut (13), ceramic ring (11) and nozzle (12), its characterized in that: an air cooling cover (21) with a hollow structure is covered on the outer side of the follow-up sensor body (10), and the top of the air cooling cover (21) is attached and connected with the follow-up sensor body (10); the upper part of the air cooling cover (21) is provided with an air inlet (14), and the bottom of the air cooling cover is uniformly provided with a plurality of exhaust holes (15); an air pipe (4) is installed on the air inlet (14), and the other end of the air pipe (4) is connected with a vortex tube (6).

2. The laser cutting head air cooling device of claim 1, wherein: spiral grooves (19) are milled on the inner wall of the air cooling cover (21) by taking the air inlet (14) and the exhaust hole (15) as a starting point and a tail end respectively.

3. The laser cutting head air cooling device of claim 1 or 2, wherein: the air cooling cover (21) comprises an air cooling cover cooling unit (1) and an air cooling cover exhaust unit (2) which are detachably connected up and down.

4. The laser cutting head air cooling device of claim 3, wherein: the air cooling cover cooling unit (1) comprises an installation base (17) which is attached to the top of the follow-up sensor body (10) and detachably connected with the top of the follow-up sensor body, and a cylindrical cover body (18) arranged at the bottom of the installation base (17), wherein the air inlet (14) is arranged at the upper part of the cover body (18); the air cooling hood exhaust unit (2) comprises a connecting cylinder (22) in threaded connection with the bottom of the hood body (18) and a circular baffle (16) arranged at the bottom of the connecting cylinder (22); the diameter of the inner circle of the baffle plate (16) is smaller than that of the cover body (18), the diameter of the outer circle of the baffle plate is larger than or equal to that of the cover body (18), and the exhaust holes (15) are uniformly formed in the baffle plate (16) on the inner side of the connecting cylinder (22) along the circumference.

5. The laser cutting head air cooling device of claim 4, wherein: the mounting base (17) is provided with a plurality of mounting holes (20), and the mounting holes (20) are connected and fixed with the top of the follow-up sensor body (10) through bolts.

6. The laser cutting head air cooling device of claim 4 or 5, wherein: a throttle valve (3) is arranged on the air pipe (4) connected with the air inlet (14).

7. The laser cutting head air cooling device of claim 6, wherein: and a vortex tube mounting support (5) for mounting and fixing the vortex tube (6) is arranged on the vortex tube (6).

8. The laser cutting head air cooling device of claim 7, wherein: the air inlet of the vortex tube (6) is communicated with a compressed air source.

9. The laser cutting head air cooling device of claim 7 or 8, wherein: the cutting head body (8) is connected with a laser head mounting plate (7).

10. The laser cutting head air cooling device of claim 1, wherein: the air cooling cover (21) is made of aluminum alloy.