Protective cooling head of laser

Abstract

The utility model discloses a protective cooling head of a laser, which comprises an inner flow guide cover, an outer flow guide cover, a protective mirror and a water cooling head, one end of the water cooling head is provided with a first extension tube, one end of the first extension tube far away from the water cooling head is provided with a mounting groove, the protective mirror is arranged in the mounting groove, the inner flow guide cover is connected with the water cooling head, and the outer flow guide cover is connected with the inner flow guide cover. According to the protective cooling head of the laser, the protective mirror is additionally arranged on the basis of an original water cooling head, the window mirror is protected from being polluted through the protective mirror, later maintenance and replacement are facilitated, the power of the laser keeps stable output, the service life of the laser is greatly prolonged, and the guide cover is arranged at the outer end of the protective mirror, so that the service life of the laser is prolonged. After air connection, air flow from the protective glass to the outside is formed, so that smoke and dust entering is greatly reduced, and cooling is achieved.

Description

Technical Field

[0001] The utility model relates to the field of carbon dioxide lasers, in particular to a protective cooling head of a laser. Background Art

[0002] Carbon dioxide laser is a gas laser that uses CO2 gas as the working material. The discharge tube is usually made of glass or quartz material, filled with CO2 gas and other auxiliary gases; the electrode is generally a nickel hollow cylinder; one end of the resonant cavity is a gold-plated total reflector, and the other end is a partial reflector made of germanium or gallium arsenide. When a high voltage is applied to the electrode, a glow discharge is generated in the discharge tube, and laser output is generated at one end of the germanium mirror, with a wavelength in the mid-infrared band near 10.6 microns.

[0003] The existing CO2 laser window mirror is generally cooled by water or air. However, since laser equipment will generate a lot of smoke and dust when cutting materials, the working environment is mostly harsh. If the machine is turned on for a long time, some material smoke and air dust will inevitably adhere to the laser window mirror. If the operator does not pay attention to maintenance and wiping, it is easy to cause the laser window mirror coating layer to burn out or even burst at high temperature over a long period of time, resulting in a serious drop in laser power or even direct scrapping, causing unnecessary losses and delaying customer production progress. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a protective cooling head for a laser.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a protective cooling head for a laser, comprising an inner flow guide cover, an outer flow guide cover, a protective mirror and a water cooling head, wherein one end of the water cooling head is provided with a first extension tube, an end of the first extension tube away from the water cooling head is provided with a mounting groove, the protective mirror is arranged in the mounting groove, the inner flow guide cover is connected to the water cooling head, and the outer flow guide cover is connected to the inner flow guide cover.

[0007] As a preferred technical solution of the utility model, a second extension tube is provided at one end of the inner air guide cover away from the protective mirror, and an end of the second extension tube extends from one end inside the outer air guide cover.

[0008] As a preferred technical solution of the utility model, an annular sealing ring is provided on the protective mirror.

[0009] As a preferred technical solution of the utility model, an air guide head is provided on the outer periphery of the outer air guide cover, and a regulating valve is provided on the air guide head.

[0010] As a preferred technical solution of the utility model, the water cooling head has a cavity inside, and a water inlet pipe and a water outlet pipe connected to the cavity are arranged on its outer wall, and the cavity, the water inlet pipe and the water outlet pipe form a circulating water circuit.

[0011] As a preferred technical solution of the utility model, the first extension tube is provided with a first external thread, the inner wall of the inner air guide cover is provided with a first internal thread matched with the first external thread, and the inner air guide cover and the first extension tube are threadedly connected via the first internal thread and the first external thread.

[0012] As a preferred technical solution of the utility model, a second external thread is provided on the outer periphery of the raised portion of the inner air guide cover, a second internal thread matched with the second external thread is provided on the inner wall of the outer air guide cover, and the outer air guide cover and the inner air guide cover are threadedly connected via the second internal thread and the second external thread.

[0013] As a preferred technical solution of the utility model, fixing screw holes are provided on the outer side wall of the water cooling head.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] This patent adds a protective mirror to the original water cooling head. The protective mirror protects the window mirror from contamination and is convenient for future maintenance and replacement. It also keeps the laser power output stable, greatly extending the life of the laser. In addition, a deflector is provided at the outer end of the protective mirror. After receiving the air, an airflow is formed from the protective mirror to the outside, which greatly reduces the entry of smoke and dust and reduces the temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is one of the overall structural split diagrams of the utility model;

[0018] Figure 2 This is the second overall structural split diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] In the figure: 1. Inner air guide cover; 2. Outer air guide cover; 3. Protective mirror; 4. Water cooling head; 5. First extension pipe; 6. Mounting groove; 7. Second extension pipe; 8. Annular sealing ring; 9. Air guide head; 10. Regulating valve; 11. Cavity; 12. Water inlet pipe; 13. Water outlet pipe; 14. First external thread; 15. First internal thread; 16. Second external thread; 17. Second internal thread; 18. Fixing screw hole. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] In the drawings, the same reference numerals all refer to the same components.

[0024] like Figure 1-4 As shown, the utility model provides a protective cooling head for a laser, comprising an inner flow guide cover 1, an outer flow guide cover 2, a protective mirror 3 and a water cooling head 4, a first extension tube 5 is provided at one end of the water cooling head 4, a mounting groove 6 is provided at one end of the first extension tube 5 away from the water cooling head 4, the protective mirror 3 is arranged in the mounting groove 6, the inner flow guide cover 1 is connected to the water cooling head 4, and the outer flow guide cover 2 is connected to the inner flow guide cover 1.

[0025] In this embodiment, the water cooling head 4 is installed at the window mirror of the carbon dioxide laser, and the protective mirror 3 for protecting the window mirror of the carbon dioxide laser is installed in the installation groove 6 of the first extension tube 5 of the water cooling head 4. After the inner flow guide cover 1 is connected to the water cooling head 4, the protective mirror 3 is fixed therein, and the outer flow guide cover 2 is connected to the inner flow guide cover 1. The water cooling head 4, the protective mirror 3, the inner flow guide cover 1 and the outer flow guide cover 2 form a whole, and the centers of the four are on the same axis. The carbon dioxide laser is sequentially connected with the water cooling head 4, the protective mirror 3, the inner flow guide cover 1 and the outer flow guide cover 2; the window mirror of the carbon dioxide laser is protected from pollution by the protective mirror 3, so that the laser power maintains a stable output, which greatly extends the life of the laser; a gasket can be added between the protective mirror 3 and the installation groove 6 to make the installation of the protective mirror 3 more stable.

[0026] Furthermore, a second extension tube 7 is provided at one end of the inner air guide cover 1 away from the protective mirror 3 , and an end of the second extension tube 7 extends from one end inside the outer air guide cover 2 .

[0027] In this embodiment, the structure in which the end of the second extension tube 7 extends from one end inside the outer air duct 2 can compress the moisture and oil in the air into the inner air duct 1 .

[0028] Furthermore, an annular sealing ring 8 is provided on the protective mirror 3 .

[0029] In this embodiment, the annular sealing ring 8 is used to protect the outer periphery of the protection mirror 3 and to enable the protection mirror 3 to be more tightly installed in the installation groove 6 .

[0030] Furthermore, an air guide head 9 is provided on the outer periphery of the outer air guide cover 2 , and a regulating valve 10 is provided on the air guide head 9 .

[0031] In this embodiment, an air guide head 9 of prior art is used to receive air. After being connected to an external air pump, it can send the airflow into the gap between the inner air guide cover 1 and the outer air guide cover 2, thereby forming an airflow from the protective mirror to the outside, greatly reducing the entry of smoke and dust; the air intake volume is adjusted by the regulating valve 10.

[0032] Furthermore, the water cooling head 4 has a cavity 11 therein, and a water inlet pipe 12 and a water outlet pipe 13 communicating with the cavity 11 are disposed on the outer wall thereof. The cavity 11, the water inlet pipe 12 and the water outlet pipe 13 form a circulating water circuit.

[0033] In this embodiment, the water inlet pipe 12 is connected to an external water pump, and the water outlet pipe 13 is used to discharge the heated coolant. Through the external water pump, the coolant circulates in a circulating water circuit formed by the cavity 11, the water inlet pipe 12 and the water outlet pipe 13 to achieve the purpose of water cooling.

[0034] Furthermore, the first extension tube 5 is provided with a first external thread 14 , the inner wall of the inner air duct 1 is provided with a first internal thread 15 matched with the first external thread 14 , and the inner air duct 1 and the first extension tube 5 are threadedly connected via the first internal thread 15 and the first external thread 14 .

[0035] In this embodiment, the inner air guide cover 1 and the first extension pipe 5 are threadedly connected via a first inner thread 15 and a first outer thread 14 .

[0036] Furthermore, a second external thread 16 is provided on the outer periphery of the raised portion of the inner air guide cover 1 , and a second internal thread 17 matched with the second external thread 16 is provided on the inner wall of the outer air guide cover 2 . The outer air guide cover 2 and the inner air guide cover 1 are threadedly connected via the second internal thread 17 and the second external thread 16 .

[0037] In this embodiment, the outer air guide cover 2 is threadedly connected to the inner air guide cover 1 via the second inner thread 17 and the second outer thread 16 .

[0038] Furthermore, a fixing screw hole 18 is provided on the outer side wall of the water cooling head 4 .

[0039] In this embodiment, the fixing screw hole 18 is used to install screws for fixing the water cooling head 4 and the CO2 laser window mirror.

[0040] The utility model is a protective cooling head for a laser. A protective mirror is added to the original water cooling head. The protective mirror protects the window mirror from being contaminated, and is convenient for future maintenance and replacement. The laser power is kept output stably, which greatly prolongs the life of the laser. A guide cover is provided at the outer end of the protective mirror. After receiving air, an airflow is formed from the protective mirror to the outside, which greatly reduces the entry of smoke and dust and reduces the temperature.

[0041] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective cooling head for a laser, characterized in that: The invention comprises an inner air guide cover (1), an outer air guide cover (2), a protective mirror (3) and a water cooling head (4); a first extension tube (5) is provided at one end of the water cooling head (4); a mounting groove (6) is provided at one end of the first extension tube (5) away from the water cooling head (4); the protective mirror (3) is arranged in the mounting groove (6); the inner air guide cover (1) is connected to the water cooling head (4); and the outer air guide cover (2) is connected to the inner air guide cover (1).

2. The protective cooling head for a laser according to claim 1, characterized in that: A second extension tube (7) is provided at one end of the inner air guide cover (1) away from the protective mirror (3), and an end of the second extension tube (7) extends from one end inside the outer air guide cover (2).

3. The protective cooling head for a laser according to claim 1, characterized in that: An annular sealing ring (8) is provided on the protective mirror (3).

4. The protective cooling head for a laser according to claim 1, characterized in that: An air guide head (9) is provided on the outer periphery of the outer air guide cover (2), and a regulating valve (10) is provided on the air guide head (9).

5. The protective cooling head for a laser according to claim 1, characterized in that: The water cooling head (4) has a cavity (11) therein, and a water inlet pipe (12) and a water outlet pipe (13) in communication with the cavity (11) are provided on its outer wall; the cavity (11), the water inlet pipe (12) and the water outlet pipe (13) form a circulating water circuit.

6. The protective cooling head for a laser according to claim 1, characterized in that: The first extension tube (5) is provided with a first external thread (14), the inner wall of the inner air guide cover (1) is provided with a first internal thread (15) matched with the first external thread (14), and the inner air guide cover (1) and the first extension tube (5) are threadedly connected via the first internal thread (15) and the first external thread (14).

7. The protective cooling head for a laser according to claim 1, characterized in that: A second external thread (16) is provided on the outer periphery of the raised portion of the inner air guide cover (1), and a second internal thread (17) matching the second external thread (16) is provided on the inner wall of the outer air guide cover (2), and the outer air guide cover (2) and the inner air guide cover (1) are threadedly connected via the second internal thread (17) and the second external thread (16).

8. The protective cooling head for a laser according to claim 1, characterized in that: A fixing screw hole (18) is provided on the outer side wall of the water cooling head (4).

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