CN218874089U

CN218874089U - Laser nozzle and laser cutting machine with same

Info

Publication number: CN218874089U
Application number: CN202222620156.2U
Authority: CN
Inventors: 卢强
Original assignee: Guangdong Tianfeng Precision Technology Co ltd
Current assignee: Guangdong Tianfeng Precision Technology Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-04-18
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a laser nozzle and have its laser cutting machine, wherein the laser nozzle includes the first main part, and the middle part of the first main part is equipped with cutting gas hole from top to bottom, and the first main part is equipped with a plurality of gas holes, and a plurality of gas holes are arranged around the cutting gas hole; the first main body is arranged in the second main body, the middle part of the second main body is provided with an annular gas groove, the annular gas groove is positioned below the gas hole, the lower part of the second main body is provided with a gas outlet hole, and a first gap is formed between the inner wall of the gas outlet hole and the outer wall of the first main body; wherein, the gas hole is communicated with the first gap through the annular gas groove to form an air passage, and the cutting gas hole is not communicated with the air passage. The cutting gas is sprayed onto the surface of the workpiece through the cutting gas holes, and the cooling gas is sprayed onto the surface of the workpiece from the first gap through the annular gas groove through the gas holes, so that the cutting gas is wrapped outside by the cooling gas and is jointly conveyed to the surface of the workpiece to isolate interference of the external air to the cutting gas.

Description

Laser nozzle and laser cutting machine with same

Technical Field

The utility model relates to a laser cutting machine nozzle field especially relates to a laser nozzle and have its laser cutting machine.

Background

With the rapid development of social science and technology, laser cutting processing is gradually improved to replace the traditional metal cutting process equipment due to the characteristics of high precision and high efficiency. The nozzle has a function of delivering cutting gas to the workpiece, and the nozzle is often located near a cutting position of the workpiece, so that a large amount of heat generated when the workpiece is cut is transferred to the nozzle, and the workpiece is usually cooled by the cooling gas to prevent the nozzle from being damaged by heat.

However, when the existing nozzle is used for conveying cutting gas to cut a workpiece, the cutting gas sprayed by the nozzle is easily interfered by the external air, so that the height of the nozzle from the surface of the workpiece is increased, and the cutting precision is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a can protect cutting gas not receive the laser nozzle of outside air interference.

The laser nozzle comprises a first main body, wherein a cutting gas hole is formed in the middle of the first main body from top to bottom, the first main body is provided with a plurality of gas holes, and the plurality of gas holes are arranged around the cutting gas hole; the first main body is arranged in the second main body, an annular gas groove is formed in the middle of the second main body and located below the gas hole, a gas outlet hole is formed in the lower portion of the second main body, a first gap is formed between the inner wall of the gas outlet hole and the outer wall of the first main body, and the first gap is used for conveying cooling gas; wherein, the gas hole passes through annular gas groove with first clearance intercommunication forms the air flue, the cutting gas hole with the air flue does not communicate with each other.

According to the utility model discloses laser nozzle has following technological effect at least:

cutting gas sprays the work piece surface through the cutting gas hole on, and cooling gas sprays the work piece surface through the annular gas groove from first clearance through the gas hole on, installs in the second main part through setting up first main part for the cutting gas hole is located the air flue, and consequently the cutting gas is carried the work piece surface in the outside jointly by the cooling gas parcel, thereby makes cooling gas as the protective gas of cutting gas, with isolated outside air to the interference of cutting gas.

According to the utility model discloses a some embodiments, the cutting gas hole divide into first section and second section, the cross-sectional area of second section from top to bottom diminishes gradually, first section with second section intercommunication.

According to the utility model discloses a some embodiments, first main part includes half body under cylinder and the circular cone on the cylinder, half body under the cylinder with half body connection under the circular cone, half body lower part install in the venthole on the cylinder, half body install in the venthole under the circular cone, half body lower part on the cylinder with the venthole inner wall forms the second clearance, the cross-sectional area in second clearance from top to bottom diminishes gradually.

According to some embodiments of the utility model, the cylinder first half is equipped with first connecting portion, the second main part be equipped with first connecting portion matched with mounting groove, first connecting portion install in on the mounting groove.

According to the utility model discloses a some embodiments, the venthole is the bell mouth, the cross-sectional area of venthole from top to bottom diminishes gradually.

According to some embodiments of the utility model, the axis of venthole with the axis coincidence of cutting gas hole.

According to some embodiments of the invention, the first body is provided with a second connecting portion, the second connecting portion being provided with an external thread.

According to the utility model discloses a laser cutting machine of second aspect embodiment, include the utility model discloses a laser nozzle of first aspect embodiment.

According to the utility model discloses laser cutting machine of second aspect embodiment has following beneficial effect at least:

through adopting the laser nozzle of the embodiment of the first aspect, can be with cutting gas through the cutting gas hole jet to the workpiece surface on, cooling gas passes through the gas hole and jets to the workpiece surface from first clearance through annular gas groove, installs on the second main part through setting up first main part for the cutting gas hole is located the air flue, and consequently the cutting gas is carried the workpiece surface in the outside jointly by the cooling gas parcel, thereby makes cooling gas as the protective gas of cutting gas, with isolated outside air to the interference of cutting gas.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a laser nozzle according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a laser nozzle of some embodiments;

FIG. 3 is an exploded view of a laser nozzle of some embodiments;

fig. 4 is an enlarged view of the mark a of fig. 2.

Reference numerals:

a first body 100, a cylindrical upper half 101, a conical lower half 102, a second gap 103, a cutting gas hole 110, an upper half 111, a lower half 112, a gas hole 120, a first connection 130, a second connection 140, an external thread 150;

a second body 200, an annular air groove 210, an air outlet hole 220, a first gap 230, and a mounting groove 240.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1, a laser nozzle according to an embodiment of the present invention includes a first body 100 and a second body 200. As shown in fig. 1, 2 and 3, the cutting gas hole 110 is axially formed in the middle of the first body 100, a plurality of gas holes 120 are further formed around the central axis of the cutting gas hole 110, and the plurality of gas holes 120 are sequentially circumferentially formed on the first body 100 by using the central axis of the cutting gas hole 110 as an axis. The cutting gas holes 110 are used to deliver cutting gas, and the cutting gas holes 110 may be nitrogen or oxygen, which are the gases required by the process requirements. The gas holes 120 are used to deliver cooling gas for cooling the nozzle, which may be air for cost savings or a gas required according to process requirements. As shown in fig. 2 and 3, the second body 200 is used to mount the first body 100, the second body 200 is provided with an annular gas groove 210, the annular gas groove 210 is located right below the gas hole 120, and the annular gas groove 210 is used to improve the flow stability of the cooling gas. As shown in fig. 2 and 4, the lower portion of the second body 200 is axially provided with an air outlet 220, the air outlet 220 is located right below the annular air groove 210, and the air outlet 220 is communicated with the air hole 120 through the annular air groove 210. A first gap 230 is formed between the inner wall of the gas outlet hole 220 and the outer wall of the first body 100, and the first gap 230 is used for conveying cooling gas. As shown in fig. 2, the gas hole 120 is communicated with the first gap 230 through the annular gas groove 210 to form a gas channel, the gas channel surrounds the cutting gas hole 110 in an annular shape, and the cutting gas hole 110 is not communicated with the gas channel. The cooling gas is discharged in the cutting gas in a surrounding mode through the air channel, so that the cooling gas can also play a role of protecting the cutting gas as protective gas except the effect of the cooling nozzle, and the cutting gas is prevented from being interfered by the external air. It should be noted that, besides the cooling gas, the gas hole 120 may also deliver a protective gas, such as nitrogen or oxygen, according to the actual situation, and of course, may also deliver a combustion-supporting gas, such as methane, according to the actual situation.

In some embodiments of the present invention, as shown in fig. 2, the cutting gas hole 110 is divided into an upper half section 111 and a lower half section 112, and the upper half section 111 and the lower half section 112 are communicated. The upper half section 111 may be a circular hole, the lower half section 112 may be a tapered hole, and the cross-sectional area of the lower half section 112 is gradually reduced from top to bottom, so that the cutting gas can be ejected at a higher speed and/or pressure, thereby improving the ejection efficiency of the cutting gas.

In a further embodiment of the present invention, as shown in fig. 2, the first main body 100 comprises a cylindrical upper half 101 and a conical lower half 102, the cylindrical upper half 101 and the conical lower half 102 are connected, the lower portion of the cylindrical upper half 101 is mounted on the air outlet 220, and the conical lower half 102 is mounted on the air outlet 220. The lower part of the cylindrical upper half body 101 and the inner wall of the air outlet 220 form a second gap 103, and the cross-sectional area of the second gap 103 is gradually reduced from top to bottom, so that the cooling gas is compressed in the second gap 103 with the gradually reduced space, and the cooling gas can be sprayed out at higher speed and/or pressure, thereby improving the conveying efficiency of the cooling gas.

In some embodiments of the present invention, as shown in fig. 1, 2 and 3, in order to facilitate the installation of the first body 100 and the second body 200, the cylindrical upper half body 101 is provided with a first connection portion 130, the second body 200 is provided with a mounting groove 240 matched with the first connection portion 130, the first connection portion 130 is installed on the mounting groove 240, and the first body 100 is sleeved in the second body 200 by designing the mounting groove 240 and the first connection portion 130, thereby forming an integral nozzle structure. Specifically, the mounting groove 240 is a circular groove, the first connecting portion 130 is a circular cake, and the first connecting portion 130 is engaged with the mounting groove 240.

In a further embodiment of the present invention, as shown in fig. 2 and 4, the air outlet 220 is a tapered hole, and the cross-sectional area of the air outlet 220 is gradually decreased from top to bottom. The cooperation cutting gas hole 110 outer wall forms first clearance 230, thereby cooling gas has prolonged cooling action time of cooling gas through the mode that first clearance 230 was given vent to anger, has improved the cooling effect of cooling gas to the nozzle to make cooling gas be the annular air-out, make cooling gas to wrap up cutting gas and carry the workpiece surface, thereby prevent the interference of outside air to cutting gas.

In some embodiments of the present invention, as shown in fig. 2 and 4, in order to obtain a higher concentricity, the central axis of the gas outlet hole 220 coincides with the central axis of the cutting gas hole 110, so that the cutting gas and the cooling gas are more stably discharged.

In a further embodiment of the present invention, as shown in fig. 1 and 3, in order to facilitate the installation with the ceramic body, the first body 100 is provided with a second connecting portion 140, and the second connecting portion 140 is provided with an external thread 150 for connecting the ceramic body.

In some embodiments of the utility model, the laser cutting machine is provided, including foretell laser nozzle, this laser cutting machine is through adopting foretell laser nozzle, can spray the cutting gas through cutting gas hole 110 to the workpiece surface on, cooling gas passes through gas hole 120 and sprays the workpiece surface from first clearance 230 through annular gas groove 210, install on second main part 200 through setting up first main part 100, make cutting gas hole 110 be located the air flue, consequently, the cutting gas is carried the workpiece surface in the outside jointly by the cooling gas parcel, thereby make cooling gas as the protective gas of cutting gas, with the interference of isolated outside air to cutting gas, thereby improve the job stabilization nature of nozzle.

In the description herein, references to the description of the term "some embodiments" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A laser nozzle, comprising:

the cutting gas hole structure comprises a first main body (100), wherein a cutting gas hole (110) is formed in the middle of the first main body (100) from top to bottom, the first main body (100) is provided with a plurality of gas holes (120), and the plurality of gas holes (120) are arranged around the cutting gas hole (110);

the second main body (200), the first main body (100) is installed in the second main body (200), an annular gas groove (210) is formed in the middle of the second main body (200), the annular gas groove (210) is located below the gas hole (120), a gas outlet hole (220) is formed in the lower portion of the second main body (200), a first gap (230) is formed between the inner wall of the gas outlet hole (220) and the outer wall of the first main body (100), and the first gap (230) is used for conveying cooling gas;

wherein the gas hole (120) is communicated with the first gap (230) through the annular gas groove (210) to form an air passage, and the cutting gas hole (110) is not communicated with the air passage.

2. A laser nozzle as claimed in claim 1, wherein: the cutting gas hole (110) is divided into an upper half section (111) and a lower half section (112), the cross-sectional area of the lower half section (112) is gradually reduced from top to bottom, and the upper half section (111) is communicated with the lower half section (112).

3. A laser nozzle as claimed in claim 1, wherein: the first main body (100) comprises an upper cylindrical half body (101) and a lower conical half body (102), the upper cylindrical half body (101) is connected with the lower conical half body (102), the lower portion of the upper cylindrical half body (101) is mounted on the air outlet hole (220), the lower conical half body (102) is mounted on the air outlet hole (220), a second gap (103) is formed between the lower portion of the upper cylindrical half body (101) and the inner wall of the air outlet hole (220), and the cross sectional area of the second gap (103) is gradually reduced from top to bottom.

4. A laser nozzle as claimed in claim 3, wherein: the cylindrical upper half body (101) is provided with a first connecting part (130), the second main body (200) is provided with a mounting groove (240) matched with the first connecting part (130), and the first connecting part (130) is mounted on the mounting groove (240).

5. A laser nozzle as claimed in claim 3, wherein: the venthole (220) is a tapered hole, and the cross-sectional area of the venthole (220) is gradually reduced from top to bottom.

6. A laser nozzle as claimed in claim 5, wherein: the central axis of the air outlet hole (220) is coincident with the central axis of the cutting gas hole (110).

7. A laser nozzle as claimed in claim 1, wherein: the first body (100) is provided with a second connecting portion (140), and the second connecting portion (140) is provided with an external thread (150).

8. A laser cutting machine comprising the laser nozzle of any one of claims 1 to 7.