CN111318821A

CN111318821A - Multi-region liquid cooling laser cutting head

Info

Publication number: CN111318821A
Application number: CN202010298855.2A
Authority: CN
Inventors: 郭少锋; 江厚满; 韩良华; 贺靖; 黎亚; 彭和思
Original assignee: Hunan Dk Laser Co ltd
Current assignee: Hunan Dk Laser Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-06-23

Abstract

The invention discloses a multi-region liquid-cooled laser cutting head which comprises a plurality of lenses arranged along the axial direction of the laser cutting head and lens mounting seats sleeved outside the lenses, wherein at least two side walls of the lens mounting seats are provided with water channels allowing cooling liquid to circulate, and the water channels on the side walls are communicated with each other. The multi-region liquid-cooled laser cutting head has the advantages of simple structure, good cooling effect, sufficient internal space, good cutting effect and the like.

Description

Multi-region liquid cooling laser cutting head

Technical Field

The invention relates to the field of laser cutting, in particular to a multi-region liquid-cooled laser cutting head.

Background

The inside lens that is provided with a plurality of leaded light focuses that are used for of laser cutting head, in the course of the work, need cool down in order to guarantee the laser cutting effect to these lenses. Current laser cutting head adopts the U type pipe that stretches into inside to let in the coolant liquid to carry out the heat transfer cooling usually, and this kind of cooling method makes originally further reduce with regard to comparatively constrictive laser cutting head inner space, and narrow and small space is extremely unfavorable for thermal giving off, and the cooling effect is not good, leads to laser cutting work bad.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the multi-region liquid-cooled laser cutting head which is simple in structure, good in cooling effect, sufficient in internal space and good in cutting effect.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the utility model provides a multi-region liquid cooling laser cutting head, includes a plurality of lenses that set up along laser cutting head axial to and the outside lens mount pad of a plurality of lenses is located to the cover, be equipped with the water course that allows the circulation of cooling liquid on two at least lateral walls of lens mount pad, be linked together between the water course on each lateral wall.

As a further improvement of the above technical solution:

the side wall of the lens mounting seat is provided with a cooling area at the position corresponding to the position of the lens, and the water channels are densely distributed in the cooling area in a wave shape.

The cooling area is an inwards concave area arranged on the side wall of the lens mounting seat, the water channel is arranged at the bottom of the cooling area, and a water sealing plate arranged on the outer side of the water channel is further arranged in the cooling area.

And liquid through holes are formed in the side walls of the lens mounting seats, and two ends of each liquid through hole are respectively communicated with water channels on different side walls.

The outer side surface of the water sealing plate is flush with the outer side surface of the side wall provided with the cooling area.

The water sealing plate is connected with the lens mounting seat by welding.

The water sealing plate is connected with the lens mounting seat by a fastener.

The cooling area is provided with densely distributed wavy grooves, and the water channels are embedded in the wavy grooves and welded and fixed by adopting coiled pipes matched with the wavy grooves.

The side wall of the lens mounting seat is internally provided with a through hole communicated with the wavy grooves on the different side walls, a liquid through pipe penetrates through the through hole, and two ends of the liquid through pipe are respectively communicated with water channels on the different side walls.

Compared with the prior art, the invention has the advantages that:

the invention provides a multi-region liquid-cooled laser cutting head which comprises a plurality of lenses arranged along the axial direction of the laser cutting head and a lens mounting seat sleeved outside the lenses. Compared with the existing built-in U-shaped tubular cooling device, the arrangement mode does not occupy the internal space of the laser cutting head, and is favorable for timely dissipation of heat of the internal heating part, so that the cooling effect is optimized, and the cooling efficiency is improved. And cooling device only sets up under the inside condition of lens mount pad wall thickness that originally just exists, and it makes the whole volume of laser cutting head reduce, is favorable to the miniaturized development of laser cutting head, and can make the length of cooling channel set up as far as possible long, makes heat transfer area also increase at double. In addition, water channels on each side wall of the lens mounting seat are communicated, liquid supply of a plurality of side walls can be carried out by using a single liquid supply device, liquid inlet and outlet ports do not need to be arranged on each side wall of the lens mounting seat, and operation, management, disassembly and assembly maintenance are facilitated.

Drawings

FIG. 1 is a schematic view of the external structure of a multi-zone liquid-cooled laser cutting head of embodiment 1;

FIG. 2 is an exploded view of a lens mount in the multi-zone liquid-cooled laser cutting head of embodiment 1;

FIG. 3 is a schematic cross-sectional view of a lens mount at a fluid through hole in the multi-zone liquid-cooled laser cutting head of example 1;

FIG. 4 is a schematic view of the external structure of the multi-zone liquid-cooled laser cutting head of embodiment 2;

FIG. 5 is a schematic diagram of the configuration of the water channel in the multi-zone liquid-cooled laser cutting head of embodiment 3;

FIG. 6 is a schematic cross-sectional view of the lens mount at the liquid through hole in the multi-zone liquid-cooled laser cutting head of embodiment 3.

Illustration of the drawings: 1. a lens; 2. a lens mount; 21. a water channel; 22. a cooling zone; 23. and (4) a water sealing plate.

Detailed Description

In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.

Example 1:

as shown in fig. 1 and fig. 2, the multi-region liquid-cooled laser cutting head of the present embodiment includes a plurality of lenses 1 disposed along an axial direction of the laser cutting head, and a lens mounting base 2 sleeved outside the plurality of lenses 1, wherein at least two sidewalls of the lens mounting base 2 are provided with water channels 21 allowing a cooling liquid to flow therethrough, and the water channels can be used as a cooling device in a laser cutting process after the cooling liquid is introduced. Compared with the existing built-in U-shaped tubular cooling device, the arrangement mode does not occupy the internal space of the laser cutting head, and is favorable for timely dissipation of heat of the internal heating part, so that the cooling effect is optimized, and the cooling efficiency is improved. And cooling device only sets up under the inside condition of the 2 wall thickness of lens mount pad that originally just exist, and it makes the whole volume of laser cutting head reduce, is favorable to the miniaturized development of laser cutting head, and can make the length setting of cooling channel as far as possible long, makes heat transfer area also increase at double. In addition, the water channels 21 on the side walls of the lens mounting seat 2 are communicated, liquid supply of a plurality of side walls can be performed by using a single liquid supply device, liquid inlet and outlet ports do not need to be formed in each side wall of the lens mounting seat 2, and operation, management, disassembly and assembly maintenance are facilitated.

In this embodiment, a cooling area 22 is disposed on the side wall of the lens mounting base 2 corresponding to the position of the lens 1, and the water channels 21 are densely distributed in the cooling area 22 in a wave shape. Under the condition that the occupied space is the same, more cooling liquid can be introduced into the wavy dense water channels 21, so that the brought low temperature and the taken heat are more, the cooling effect can be further enhanced, and the stability of laser cutting work is ensured.

In this embodiment, the cooling area 22 is an inward concave area provided on the side wall of the lens mount 2, and the water channel 21 is provided at the bottom of the cooling area 22, so that the cooling area is closer to internal heating elements such as the lens 1, the cooling effect is enhanced, and the heat exchange efficiency is further improved; the cooling area 22 is further provided with a water sealing plate 23 arranged outside the water channel 21 for sealing the water channel 21. The outer side surface of the water sealing plate 23 is flush with the outer side surface of the side wall provided with the cooling area 22, so that the integral appearance of the laser cutting head is smooth and attractive, and meanwhile, the disassembly, assembly and maintenance are facilitated.

In this embodiment, the water seal plate 23 is connected with the lens mount 2 by friction stir welding, and the welding area is as shown by a dotted line in fig. 1, and the welding line is invisible, so that the wall surface of the lens mount 2 is smoother, and the sealing performance is better. In other embodiments, the water sealing plate 23 may also be fixed and sealed by other welding methods, which are not described herein.

In this embodiment, as shown in fig. 3, water channels 21 are disposed on two opposite side walls of the lens mounting base 2, a liquid through hole is disposed inside the side wall between the two side walls, two ends of the liquid through hole are respectively communicated with the water channels 21 on the two side walls for communicating liquid between the two side walls, and the built-in liquid through hole does not occupy the inner and outer spaces of the laser cutting head, so that the size of the laser cutting head is not affected. In other embodiments, the water channels 21 may be disposed on three or all of the side walls, and the adjacent water channels 21 are communicated with each other through the liquid through holes at the corners inside the side walls, which is not described herein.

Example 2:

this embodiment is substantially the same as embodiment 1, except that, as shown in fig. 4, in this embodiment, the water sealing plate 23 is connected to the lens mounting base 2 by a fastener, and compared with the case of welding, this connection mode enables the water sealing plate 23 to be conveniently detached, and when the internal water channel 21 is blocked, the detachment and maintenance by an operator are facilitated.

Example 3:

this embodiment is basically the same as embodiment 1 and embodiment 2, except that, as shown in fig. 5, in this embodiment, a densely-distributed corrugated groove is provided at the bottom of the cooling region 22, and the water passage 21 is fitted into the corrugated groove by a serpentine pipe fitted into the corrugated groove and fixed by welding, but in other embodiments, it may be fixed by bonding. Correspondingly, as shown in fig. 6, through holes communicating with the wavy grooves on different side walls are formed in the side walls of the lens mounting base 2, liquid passing tubes are arranged in the through holes in a penetrating manner, and two ends of each liquid passing tube are respectively communicated with the water channels 21 on different side walls. This arrangement makes the water channel 21 form a complete water conveying channel, and a good water conveying effect can be achieved without the need for sealing the water sealing plate 23.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. It should be apparent to those skilled in the art that modifications and variations can be made without departing from the technical spirit of the present invention.

Claims

1. The utility model provides a multi-region liquid cooling laser cutting head, includes a plurality of lenses (1) along the laser cutting head axial setting to and the lens mount pad (2) of a plurality of lenses (1) outside are located to the cover, its characterized in that: at least two side walls of the lens mounting seat (2) are provided with water channels (21) allowing cooling liquid to circulate, and the water channels (21) on the side walls are communicated with each other.

2. The multi-zone liquid-cooled laser cutting head of claim 1, wherein: the side wall of the lens mounting seat (2) is provided with a cooling area (22) at the position corresponding to the position of the lens (1), and the water channels (21) are densely distributed in the cooling area (22) in a wave shape.

3. The multi-zone liquid-cooled laser cutting head of claim 2, wherein: the cooling area (22) is an inner concave area arranged on the side wall of the lens mounting seat (2), the water channel (21) is arranged at the bottom of the cooling area (22), and a water sealing plate (23) arranged on the outer side of the water channel (21) in a blocking mode is further arranged in the cooling area (22).

4. The multi-zone liquid-cooled laser cutting head of any one of claims 1 to 3, wherein: liquid through holes are formed in the side walls of the lens mounting seats (2), and two ends of each liquid through hole are respectively communicated with water channels (21) on different side walls.

5. The multi-zone liquid-cooled laser cutting head of claim 3, wherein: the outer side of the water sealing plate (23) is flush with the outer side of the side wall provided with the cooling area (22).

6. The multi-zone liquid-cooled laser cutting head of claim 3, wherein: the water sealing plate (23) is connected with the lens mounting seat (2) by welding.

7. The multi-zone liquid-cooled laser cutting head of claim 3, wherein: the water sealing plate (23) is connected with the lens mounting seat (2) by a fastener.

8. The multi-zone liquid-cooled laser cutting head of claim 2, wherein: the cooling area (22) is provided with densely distributed corrugated grooves, and the water channels (21) are embedded in the corrugated grooves and welded and fixed by adopting coiled pipes matched with the corrugated grooves.

9. The multi-zone liquid-cooled laser cutting head of claim 8, wherein: the through-hole that sets up wavy groove on the different lateral walls of intercommunication in the lateral wall of lens mount pad (2), wear to be equipped with in the through-hole and lead to the liquid pipe, the both ends of leading to the liquid pipe communicate water course (21) on the different lateral walls respectively.