CN213437791U

CN213437791U - Coaxial blowing nozzle of ultrafast laser cutting head

Info

Publication number: CN213437791U
Application number: CN202022511333.4U
Authority: CN
Inventors: 曾帅; 李琼霞; 张洁
Original assignee: Wuhan Maojiu Photo Electronic Technology Co ltd
Current assignee: Wuhan Maojiu Photo Electronic Technology Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-06-15
Anticipated expiration: 2030-11-03

Abstract

The utility model provides a coaxial blowing nozzle of an ultrafast laser cutting head, which relates to the field of laser accessories and comprises a nozzle main body, wherein a nozzle gas outlet is arranged at the central position of the end part of the nozzle main body, an air inlet is arranged at the side surface of the nozzle main body, a third gas passage is vertically arranged in the inner cavity of the nozzle main body, a first gas cavity is arranged at the corresponding position of the inner cavity of the nozzle main body by the air inlet, a second gas passage is arranged between the end parts of the first gas cavity and the third gas passage, coaxial blowing is realized by adopting the coaxial nozzle, positive pressure can be formed in the cutting head, smoke dust and particulate matters can not enter the cutting head, meanwhile, the utility model is provided with a quick disassembly protective lens, the protective lens is easy to clean and replace, the nozzle and the main body are connected by screw threads, the nozzle can, dust cannot enter the interior of the cutting head.

Description

Coaxial blowing nozzle of ultrafast laser cutting head

Technical Field

The utility model relates to a laser accessory field especially relates to a coaxial nozzle of blowing of ultrafast laser cutting head.

Background

According to the laser cutting air blowing nozzle with the patent number of CN102513703B, the laser cutting air blowing nozzle comprises a nozzle shell, wherein an air guide tube is arranged in the nozzle shell, a focusing tube is arranged between the air guide tube and the nozzle shell, the focusing tube is respectively connected with the air guide tube and the nozzle shell through threads, and the focusing tube is communicated with the air guide tube; a nozzle is arranged at the other end of the focusing tube corresponding to the nozzle shell through a nozzle connecting body, the nozzle is communicated with the focusing tube, a protective lens is arranged at the end part of the other end of the air guide tube corresponding to the end part connected with the focusing tube, and a focusing mirror is arranged at the other side of the protective lens corresponding to the end part connected with the air guide tube; the focusing pipe is provided with an air blowing port which is communicated with the focusing pipe; when the focusing tube moves relative to the gas cylinder and the nozzle shell through threads, light emitted by the focusing mirror can be focused on the axis of the nozzle, and the focal point of the light is positioned outside the nozzle. The invention has compact structure, improved nozzle pressure, enhanced cutting efficiency, good applicability, improved cutting quality, safety and reliability, and the method and the device for the back side blowing gas assisted laser cutting with the patent number of CN 104043904A.

The ultrafast laser cutting head that markets at present and patent disclose, the focus is very short, generally is outside paraxial gas blowing, and inside smoke and dust and the particulate matter of first laser cutting got into the cutting head easily, the pollution lens, and then burnt out the protection lens. Secondly, the paraxial blowing does not uniformly blow the product cutting gap, resulting in poor cutting edge effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a coaxial blowing nozzle of an ultrafast laser cutting head.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the coaxial blowing nozzle for the ultrafast laser cutting head comprises a nozzle body, a nozzle gas outlet is formed in the center of the end of the nozzle body, a gas inlet is formed in the side face of the nozzle body, a third gas passage is vertically formed in the inner cavity of the nozzle body, a first gas cavity is formed in the corresponding position of the inner cavity of the nozzle body through the gas inlet, and a second gas passage is formed between the first gas cavity and the end of the third gas passage.

Preferably, the end part of the nozzle main body is in threaded connection with a laser head main body, a sealing rubber ring is embedded between the contact surfaces of the laser head main body and the nozzle main body, and a limit rubber pad is attached to the circumferential surface contact position of the nozzle main body and the laser head main body.

Preferably, a protective lens is embedded in the inner cavity of the nozzle body, and the surface of the protective lens is coated with an anti-corrosion coating.

Preferably, the third air passage is vertically formed in the inner cavity of the nozzle main body, the third air passage is a semi-cylindrical notch, the second air passage is a circular groove, and the second air passage and the air inlet are communicated with each other through the first air cavity.

Preferably, the sealing rubber ring is a silica gel sealing ring.

Preferably, the cross section of the limiting rubber pad is L-shaped, and the limiting rubber pad is formed by integrally injection molding metal modified rubber.

Advantageous effects

The utility model discloses in, adopt coaxial nozzle to realize coaxial blowing, can be inside the malleation that forms of cutting head, inside smoke and dust and the unable cutting head that gets into of particulate matter, simultaneously the utility model discloses in be provided with quick dismantlement protection lens, clean change protection lens is easy.

The utility model discloses in, use threaded connection with nozzle and main part, can dismantle the nozzle fast to clean change protection lens, nozzle and main part adopt the rubber ring sealed, and the dust can't get into inside the cutting head.

Drawings

FIG. 1 is a main structural view of a coaxial blowing nozzle of an ultrafast laser cutting head;

FIG. 2 is a top view of an ultrafast laser cutting head coaxial blow nozzle;

FIG. 3 is an internal cross-sectional view of an ultrafast laser cutting head coaxial blow nozzle;

FIG. 4 is an assembled view of a coaxial blowing nozzle for an ultrafast laser cutting head;

fig. 5 is an assembled internal structure view of an ultrafast laser cutting head coaxial blowing nozzle.

Illustration of the drawings:

1. a laser head main body; 2. a nozzle body; 3. a nozzle outlet; 4. an air inlet; 5. sealing the rubber ring; 6. protecting the lens; 7. a limiting rubber cushion; 8. a first air cavity; 9. a second air passage; 10. and a third air passage.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-5, a coaxial blowing nozzle of an ultrafast laser cutting head comprises a nozzle main body 2, a protective lens 6 is embedded in an inner cavity of the nozzle main body 2, an anti-corrosion coating is coated on the surface of the protective lens 6, a laser head main body 1 is connected to the end portion of the nozzle main body 2 in a threaded manner, a sealing rubber ring 5 is embedded between the contact surfaces of the laser head main body 1 and the nozzle main body 2, the sealing rubber ring 5 is a silica gel sealing ring, a limit rubber pad 7 is attached to the contact position of the circumferential surfaces of the nozzle main body 2 and the laser head main body 1, the cross section of the limit rubber pad 7 is in an L shape, the limit rubber pad 7 is formed by integrally injection molding metal modified rubber, a nozzle air outlet 3 is arranged at the center position of the end portion of the nozzle main body 2, an air inlet 4 is arranged on the side surface of the nozzle main body 2, a third air, a second air passage 9 is formed between the end parts of the first air cavity 8 and the third air passage 10, the third air passage 10 is vertically formed in the inner cavity of the nozzle main body 2, the third air passage 10 is a semi-cylindrical notch, the second air passage 9 is a circular groove, and the second air passage 9 and the air inlet 4 are communicated with each other through the first air cavity 8.

The utility model discloses a theory of operation: the utility model provides a coaxial nozzle of blowing of ultrafast laser cutting head, in operation, with the tip of nozzle main part 2 screw thread fixed mounting at laser head main part 1, the hookup location gomphosis between nozzle main part 2 and laser head main part 1 has sealed rubber ring 5 and spacing cushion 7 simultaneously, thereby guarantee that whole hookup location is airtight each other and lock each other, later after laser takes place, laser jets out through laser head main part 1, laser launches away through nozzle main part 2's protection lens 6, simultaneously with air inlet 4 and external gas station interconnect, jet-propelled to nozzle main part 2's inner chamber, through first air cavity 8, second air flue 9 and third air flue 10 get into the equipment inner chamber, finally spout through nozzle gas outlet 3, form a complete return circuit, pressurize the laser head, prevent that the dust from getting into inside.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a coaxial nozzle of blowing of ultrafast laser cutting head, includes nozzle body (2), its characterized in that: the nozzle is characterized in that a nozzle gas outlet (3) is formed in the center of the end of the nozzle main body (2), a gas inlet (4) is formed in the side face of the nozzle main body (2), a third gas channel (10) is vertically formed in the inner cavity of the nozzle main body (2), a first gas cavity (8) is formed in the corresponding position of the gas inlet (4) in the inner cavity of the nozzle main body (2), and a second gas channel (9) is formed between the end of the first gas cavity (8) and the end of the third gas channel (10).

2. The coaxial blowing nozzle of claim 1 for an ultrafast laser cutting head, characterized in that: the end part of the nozzle main body (2) is connected with a laser head main body (1) in a threaded manner, a sealing rubber ring (5) is embedded between the contact surfaces of the laser head main body (1) and the nozzle main body (2), and a limit rubber pad (7) is attached to the circumferential surface contact position of the nozzle main body (2) and the laser head main body (1).

3. The coaxial blowing nozzle of claim 1 for an ultrafast laser cutting head, characterized in that: and a protective lens (6) is embedded in the inner cavity of the nozzle main body (2), and the surface of the protective lens (6) is coated with an anti-corrosion coating.

4. The coaxial blowing nozzle of claim 1 for an ultrafast laser cutting head, characterized in that: the third air passage (10) is vertically formed in the inner cavity of the nozzle main body (2), the third air passage (10) is a semi-cylindrical notch, the second air passage (9) is a circular groove, and the second air passage (9) and the air inlet (4) are communicated with each other through the first air cavity (8).

5. The coaxial blowing nozzle of claim 2 for the ultrafast laser cutting head, wherein: and the sealing rubber ring (5) is a silica gel sealing ring.

6. The coaxial blowing nozzle of claim 2 for the ultrafast laser cutting head, wherein: the cross section of the limiting rubber pad (7) is L-shaped, and the limiting rubber pad (7) is integrally formed by injection molding of metal modified rubber.