Return air pipe support sleeve for a carbon dioxide laser and carbon dioxide laser

Abstract

The present invention relates to a return air pipe support sleeve of a carbon dioxide laser and a carbon dioxide laser, wherein the support sleeve comprises a cylinder, at least three elastic legs are arranged on the outside of the cylinder, the elastic legs are arranged in an axial spiral arrangement along the cylinder, the elastic legs comprise an arc segment and a tilting segment, one end of the arc segment is connected to the cylinder, the other end of the arc segment is connected to the tilting segment, the tilting segment tilts away from the cylinder, an arc opening is provided at one end of the tilting segment away from the arc segment, the opening direction of the arc opening is away from the cylinder, the arc opening is used to support the outer wall of the return air pipe, and the carbon dioxide laser comprises the return air pipe support sleeve. The present invention supports the return air pipe by the support sleeve, thereby avoiding the local stress generated by the support of the fired glass column and improving the overall strength of the carbon dioxide laser; the support sleeve can also provide uniform multi-point support for the return air pipe; when the carbon dioxide laser encounters an impact, the support sleeve can reduce the risk of damage to the end of the return air pipe due to the impact.

Description

Technical Field

[0001] The present invention relates to the field of lasers, and particularly to a return air pipe support sleeve for a carbon dioxide laser and a carbon dioxide laser. Background Art

[0002] Currently, a carbon dioxide laser generally includes a discharge tube, a water-cooling tube sleeved outside the discharge tube, a gas storage tube sleeved outside the water-cooling tube, a cathode and an anode disposed in the discharge tube, and output windows and reflection windows disposed at both ends. The reflection window includes a reflection lens and a reflection lens cooling device, and the output window includes an output lens and an output lens cooling device. Carbon dioxide gas and other auxiliary gases are filled in the discharge tube. When a high voltage is applied between the cathode and the anode, glow discharge occurs in the discharge tube, and after being reflected by the reflection lens and the output lens, a laser beam is formed and emitted from the output lens. Due to the relatively large power, relatively high energy conversion efficiency, and relatively rich spectral lines of the carbon dioxide laser, there are dozens of spectral lines of laser output near 10 microns, and it has been widely used in industries, military, medical, scientific research, etc.

[0003] In the current sealed-off carbon dioxide laser, cavities for placing electrodes are respectively provided at both ends of the discharge tube, namely an anode chamber and a cathode chamber. Some sealed-off carbon dioxide lasers are connected with a return air pipe having a spiral structure in the anode chamber, and a similar structure is disclosed in the Chinese utility model patent with the application number 201420436154.0; some sealed-off carbon dioxide lasers are connected with a return air pipe having a spiral structure in the cathode chamber, and a similar structure is disclosed in the Chinese invention patent with the application number 202110801442.6.

[0004] In the sealed-off carbon dioxide laser with the above structure, one end of the return air pipe is communicated with the electrode chamber, and the other end is connected and fixed to the outer wall of the water-cooling tube or the inner wall of the gas storage tube by means of supporting with a fired glass column. However, when one end of the return air pipe is connected by supporting with a fired glass column, relatively large local connection stress will be generated, resulting in local stress concentration of the carbon dioxide laser and affecting the overall strength of the carbon dioxide laser. Moreover, the fired glass column support is a single-point support, which will apply a relatively large force to the end of the return air pipe and also affect the overall strength of the carbon dioxide laser. And because the fired glass column support lacks deformation allowance, when the carbon dioxide laser is impacted, there is a risk of damage to the end of the return air pipe. At the same time, due to the cumbersome firing process of the glass column support and the high professional requirements for technicians, it is difficult to achieve mass production and maintain product consistency. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art that when a return air pipe is supported by a fired glass column, a large local stress will be generated, affecting the overall strength of the laser, and the single-point support of the glass column support will exert a large force on the end of the return air pipe, also affecting the overall strength of the laser, and the glass column support lacks deformation margin, and the end of the return air pipe is at risk of being damaged due to impact of the carbon dioxide laser. Provided are a return air pipe support sleeve for a carbon dioxide laser and a carbon dioxide laser.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] A return air pipe support sleeve of a carbon dioxide laser comprises a cylinder body, at least three elastic legs are arranged on the outer side of the cylinder body, the elastic legs are arranged in an axial spiral arrangement along the cylinder body, the elastic legs comprise an arc segment and a tilted segment, one end of the arc segment is connected to the cylinder body, the other end of the arc segment is connected to the tilted segment, the tilted segment tilts away from the cylinder body, an arc opening is provided at one end of the tilted segment away from the arc segment, the opening direction of the arc opening is away from the cylinder body, and the arc opening is used to support the outer wall of the return air pipe.

[0008] The present invention provides a return air pipe support sleeve for a carbon dioxide laser, comprising a cylinder and at least three elastic legs, wherein the cylinder is used to sleeve the return air pipe support sleeve on a water-cooling pipe, and the elastic legs are arranged in an axial spiral arrangement along the cylinder and arranged on the outer side of the cylinder, so that the return air pipe support sleeve can be spirally screwed into between the return air pipe and the water-cooling pipe, and the elastic legs comprise an arc segment and a tilted segment, wherein the arc segment can provide the elastic legs with a certain deformation margin in the radial direction of the cylinder, and the tilted segment tilts away from the cylinder, and the tilted segment can reduce the bending moment applied to the arc segment, and an arc opening is provided at one end of the tilted segment away from the arc segment, and the arc opening cooperates with the outer wall of the return air pipe, so as to better support the return air pipe and also facilitate the support sleeve to better spirally screw into between the return air pipe and the water-cooling pipe. The present invention provides a return air pipe support sleeve for a carbon dioxide laser. The return air pipe is supported by the support sleeve, thereby avoiding local stress caused by the support of a fired glass column and improving the overall strength of the carbon dioxide laser. The support sleeve comprises at least three elastic legs, which provide relatively uniform multi-point support for the return air pipe, disperse the force of the support sleeve on the return air pipe, and also improve the overall strength of the carbon dioxide laser. The elastic legs can provide a certain deformation margin. After assembly, when the carbon dioxide laser encounters an impact, the support sleeve can reduce the risk of damage to the end of the return air pipe due to the impact. At the same time, the installation process of the support sleeve is simple. During assembly, the support sleeve can be screwed between the return air pipe and the water cooling pipe, thereby avoiding the tedious manual processing steps of the fired glass column support, and can also be mechanized for mass production to ensure product consistency.

[0009] As a preferred solution of the present invention, the elastic leg closest to the end of the cylinder is a positioning leg, and the diameter of the arc-shaped opening of the positioning leg is consistent with the diameter of the outer wall of the return air pipe. When installing the support sleeve, the positioning leg is used as the first elastic leg to be screwed in. After the positioning leg is aligned with the return air pipe, it is screwed in between the return air pipe and the water cooling pipe. The diameter of the arc-shaped opening of the positioning leg is consistent with the diameter of the outer wall of the return air pipe, which is conducive to helping the entire support sleeve to be installed and positioned.

[0010] As a preferred solution of the present invention, the support sleeve includes only one positioning leg, which facilitates the installation of the support sleeve.

[0011] As a preferred embodiment of the present invention, the diameters of the arc-shaped openings of the other elastic legs except the positioning leg are the same and are larger than the diameter of the outer wall of the return air pipe. The diameters of the arc-shaped openings of the other elastic legs are the same and are larger than the diameter of the outer wall of the return air pipe, which can reduce the force exerted by the elastic legs on the return air pipe in directions other than the radial direction of the cylinder, and facilitate installation.

[0012] As a preferred solution of the present invention, the width of the arc segment gradually decreases from one end to the other end, the wide end of the arc segment is connected to the cylinder, and the narrow end of the arc segment is connected to the tilting segment. The width of the arc segment gradually decreases from one end to the other end, so that the stiffness of the arc segment gradually decreases from the wide end to the narrow end. When the carbon dioxide laser is impacted, the elastic leg can provide a more linear deformation according to the size of the impact, and the force on the elastic leg is more reasonable. While providing reliable support, it can also provide a corresponding deformation margin.

[0013] As a preferred solution of the present invention, the width of the end where the tilted section is connected to the arc section is greater than the narrow end of the arc section. The width of the end where the tilted section is connected to the arc section is greater than the narrow end of the arc section, ensuring that the tilted section can cooperate well with the outer wall of the return air pipe, thereby enabling the support sleeve to better support the return air pipe.

[0014] As a preferred solution of the present invention, one end of the arc section connected to the cylinder is provided with a protruding section, which protrudes away from the cylinder. The protruding section can enhance the fatigue resistance of the connection between the elastic leg and the cylinder and increase the service life of the support sleeve.

[0015] As a preferred solution of the present invention, the elastic legs are evenly arranged in the circumferential direction of the cylinder, so that the support sleeve can provide relatively uniform support in the circumferential direction, thereby improving the stability and reliability of the support sleeve.

[0016] As a preferred embodiment of the present invention, a through groove extending through both ends is provided along the generatrix of the cylinder body. The through groove endows the support sleeve body with a certain elasticity, enabling the support sleeve body to expand or compress along the through groove, which facilitates the installation of the support sleeve and ensures that the support sleeve can be firmly sleeved on the water-cooled pipe.

[0017] As a preferred embodiment of the present invention, the support sleeve is made of elastic metal. Selecting the support sleeve to be made of elastic metal can not only meet the elastic requirements, but also facilitate manufacturing and processing, and can also meet the working conditions of the carbon dioxide laser.

[0018] The present invention also discloses a carbon dioxide laser, including the return air pipe support sleeve of any one of the carbon dioxide lasers described above.

[0019] The carbon dioxide laser provided by the present invention includes the return air pipe support sleeve of any one of the carbon dioxide lasers described above. Using the support sleeve to support the return air pipe avoids local stress generated by firing glass columns to support, and improves the overall strength of the carbon dioxide laser; the support sleeve includes at least three elastic legs, providing relatively uniform multi-point support for the return air pipe, dispersing the acting force of the support sleeve on the return air pipe, and also improving the overall strength of the carbon dioxide laser; the support sleeve can provide a certain deformation margin. After assembly, when the carbon dioxide laser provided by the present invention encounters an impact, the risk of damage to the end of the return air pipe due to the impact is effectively reduced.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. A return air pipe support sleeve for a carbon dioxide laser provided by the present invention comprises a cylinder body and at least three elastic legs, wherein the cylinder body is used to sleeve the return air pipe support sleeve on a water-cooling pipe, and the elastic legs are arranged in an axial spiral arrangement along the cylinder body and arranged on the outer side of the cylinder body, so that the return air pipe support sleeve can be spirally screwed into between the return air pipe and the water-cooling pipe, the elastic legs comprise an arc section and a tilted section, the arc section can provide the elastic legs with a certain deformation margin in the radial direction of the cylinder, the tilted section is tilted away from the cylinder body, the tilted section can reduce the bending moment exerted on the arc section, and an arc-shaped opening is provided at one end of the tilted section away from the arc section, and the arc-shaped opening cooperates with the outer wall of the return air pipe, so as to better support the return air pipe and also facilitate the support sleeve to better spirally screw into between the return air pipe and the water-cooling pipe. The present invention provides a return air pipe support sleeve for a carbon dioxide laser, which supports the return air pipe through the support sleeve, thereby avoiding local stress caused by the support of a fired glass column and improving the overall strength of the carbon dioxide laser; the support sleeve comprises at least three elastic legs, which provide relatively uniform multi-point support for the return air pipe, disperse the force of the support sleeve on the return air pipe, and also improve the overall strength of the carbon dioxide laser; the elastic legs can provide a certain deformation margin, and after assembly, when the carbon dioxide laser encounters an impact, the support sleeve can reduce the risk of damage to the end of the return air pipe due to the impact.

[0022] 2. The installation process of the air return pipe support sleeve of the carbon dioxide laser provided by the present invention is simple. During assembly, the support sleeve can be screwed into the space between the air return pipe and the water cooling pipe, thereby avoiding the tedious manual processing steps of firing the glass column support, and can also be mechanized for mass production to ensure product consistency.

[0023] 3. A carbon dioxide laser provided by the present invention comprises a return air pipe support sleeve of any of the carbon dioxide lasers described above, wherein the return air pipe is supported by the support sleeve, thereby avoiding local stress caused by the support of the fired glass column and improving the overall strength of the carbon dioxide laser; the support sleeve comprises at least three elastic legs, providing relatively uniform multi-point support for the return air pipe, dispersing the force of the support sleeve on the return air pipe and also improving the overall strength of the carbon dioxide laser; the support sleeve can provide a certain deformation margin, and after assembly, when the carbon dioxide laser provided by the present invention encounters an impact, the risk of damage to the end of the return air pipe due to the impact is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional view of the gas return pipe support sleeve of the carbon dioxide laser of the present invention;

[0025] Figure 2 A top view of the gas return pipe support sleeve of the carbon dioxide laser of the present invention;

[0026] Figure 3 Front view of Figure 2 ;

[0027] Figure 4 is Figure 3 Schematic diagram of the positional relationship of the elastic legs of the cylinder body hidden.

[0028] Reference numerals in the figure: 1 - cylinder body, 2 - elastic leg, 3 - arc section, 4 - upturned section, 5 - arc opening, 6 - protruding section, 7 - through groove. Specific implementation mode

[0029] The present invention will be further described in detail below in conjunction with test examples and specific implementation modes. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0030] Example 1

[0031] As Figures 1 - 4 shown, a return air pipe support sleeve of a carbon dioxide laser includes a cylinder body 1 and at least three elastic legs 2. The elastic legs 2 are arranged spirally along the axial direction of the cylinder body 1 on the outer side of the cylinder body 1. The elastic legs 2 include an arc section 3 and an upturned section 4. One end of the arc section 3 is connected to the cylinder body 1. The arc section 3 gradually moves away from the cylinder body 1 along the circumferential direction of the cylinder body 1. The upturned section 4 is connected to the end of the arc section 3 away from the cylinder body 1. The upturned section 4 upturns away from the cylinder body 1. An arc opening 5 is provided at the end of the upturned section 4 away from the arc section 3. The opening direction of the arc opening 5 faces away from the cylinder body 1. The arc opening 5 is used to support the outer wall of the return air pipe.

[0032] The present invention provides a return air pipe support sleeve for a carbon dioxide laser, wherein the cylinder 1 is used to sleeve the return air pipe support sleeve on a water-cooling pipe, the size of the cylinder 1 is set according to the size of the water-cooling pipe, the elastic legs 2 are arranged along the axial spiral of the cylinder 1 and are arranged on the outer side of the cylinder 1, so that the return air pipe support sleeve can be spirally screwed into between the return air pipe and the water-cooling pipe, the elastic legs 2 include an arc segment 3 and a tilting segment 4, the arc segment 3 can provide the elastic legs 2 with a certain deformation margin in the radial direction of the cylinder 1, the tilting segment 4 tilts away from the cylinder 1, the tilting segment 4 can reduce the bending moment of the arc segment 3, and an arc opening 5 is provided at one end of the tilting segment 4 away from the arc segment 3, the arc opening 5 cooperates with the outer wall of the return air pipe, so as to better support the return air pipe and also facilitate the support sleeve to be better spirally screwed into between the return air pipe and the water-cooling pipe. The present invention provides a return air pipe support sleeve for a carbon dioxide laser, which supports the return air pipe through the support sleeve, thereby avoiding local stress caused by the support of a fired glass column and improving the overall strength of the carbon dioxide laser; the support sleeve includes at least three elastic legs 2, which provide relatively uniform multi-point support for the return air pipe, disperse the force of the support sleeve on the return air pipe, and also improve the overall strength of the carbon dioxide laser; the elastic legs 2 can provide a certain deformation margin, and after assembly, when the carbon dioxide laser encounters an impact, the support sleeve can reduce the risk of damage to the end of the return air pipe due to the impact; at the same time, the installation process of the support sleeve is simple, and the support sleeve can be screwed between the return air pipe and the water cooling pipe during assembly, thereby avoiding the tedious manual processing steps of the fired glass column support, and can also be mechanized for mass production, so as to ensure the consistency of the product.

[0033] Example 2

[0034] like Figures 1 - 4 As shown, based on Example 1, this embodiment is further optimized and designed. Specifically, in this embodiment, the return air pipe support sleeve includes three elastic legs 2, and the three elastic legs 2 are arranged on the outside of the cylinder 1 in a left spiral arrangement along the axial direction of the cylinder 1. The diameter of the arc segment 3 is larger than the diameter of the cylinder 1, and the central angle corresponding to the arc segment 3 can be designed to be about 70°. The raised section 4 is raised away from the cylinder 1 along the radial direction of the arc segment 3, and the central angle corresponding to the arc opening 5 can be designed to be about 70°.

[0035] Those skilled in the art will appreciate that the spiral direction of the spiral arrangement of the elastic legs 2 must be sufficient to enable the support sleeve to be spirally screwed into between the return air pipe and the water cooling pipe, and the spiral direction of the spiral arrangement of the elastic legs 2 is set according to the spiral direction of the return air pipe.

[0036] Furthermore, the elastic leg 2 closest to the end of the cylinder 1 is a positioning leg, the diameter of the outer wall of the return air pipe is D1, and the diameter of the arc-shaped opening 5 of the positioning leg is D2, and D2≈D1. When installing the support sleeve, the positioning leg is used as the first elastic leg 2 to be screwed in. After the positioning leg is aligned with the return air pipe, it is screwed in between the return air pipe and the water cooling pipe. The diameter D2 of the arc-shaped opening of the positioning leg is substantially consistent with the diameter D1 of the outer wall of the return air pipe, which is conducive to helping the entire support sleeve to be installed and positioned.

[0037] Furthermore, the support sleeve includes only one positioning leg, which facilitates the installation of the support sleeve.

[0038] Furthermore, the diameters of the arc-shaped openings 5 ​​of the other elastic legs 2 except the positioning legs are basically the same, all of which are D3, and D3>D1≈D2. The diameters of the arc-shaped openings 5 ​​of the other elastic legs 2 are basically the same, all of which are D3 and are larger than the diameter D1 of the outer wall of the return air pipe, which can reduce the force exerted by the elastic legs 2 on the return air pipe in directions other than the radial direction of the cylinder 1, and facilitate the installation of the support sleeve. More preferably, D3 is equal to or greater than 1.2 times D1.

[0039] Furthermore, the width of the arc segment 3 gradually decreases from one end where the arc segment 3 is connected to the cylinder 1 to one end where the arc segment 3 is connected to the tilting segment 4. The width of the arc segment 3 gradually decreases from one end to the other end, so that the rigidity of the arc segment 3 gradually decreases from the wide end to the narrow end. When the carbon dioxide laser is impacted, the elastic leg 2 can provide a more linear deformation according to the magnitude of the impact, and the force on the elastic leg 2 is more reasonable. The elastic leg 2 can provide a corresponding deformation margin while providing reliable support.

[0040] Further, the width of the end where the tilting section 4 is connected to the arc section 3 is greater than the narrow end of the arc section 3. More preferably, the width of the tilting section 4 remains unchanged from the end where the tilting section 4 is connected to the arc section 3 to the end where the arc opening 5 is opened. The width of the tilting section 4 meets the chord length requirement of the arc opening 5, ensuring that the tilting section 4 can cooperate well with the outer wall of the return air pipe, thereby enabling the support sleeve to better support the return air pipe.

[0041] Example 3

[0042] like Figures 1 - 4As shown in the figure, on the basis of Embodiment 1 or 2, this embodiment has carried out further optimized design. Specifically, in this embodiment, a protruding section 6 is provided at one end of the arc section 3 connected to the cylinder 1, and the protruding section 6 protrudes away from the cylinder 1. The protruding section 6 can enhance the fatigue resistance of the connection between the elastic leg 2 and the cylinder 1 and increase the service life of the support sleeve.

[0043] Furthermore, the elastic legs 2 are evenly arranged in the circumferential direction of the cylinder 1. This enables the support sleeve to provide relatively uniform support in the circumferential direction, improving the stability and reliability of the support of the support sleeve.

[0044] Furthermore, a through groove 7 penetrating both ends is provided on the cylinder 1 along the generatrix. The through groove 7 enables the cylinder 1 to have a certain elasticity, and the cylinder 1 can be opened or compressed along the through groove 7, facilitating the installation of the support sleeve and ensuring that the support sleeve can be firmly sleeved on the water-cooled pipe. More preferably, in this embodiment, the through groove 7 is opened between the positioning leg and the elastic leg 2 farthest from the positioning leg.

[0045] Furthermore, the support sleeve is made of elastic metal. Selecting the support sleeve to be made of elastic metal can not only meet the elastic requirements, but also be convenient for manufacturing and processing, and can also meet the working conditions of the carbon dioxide laser. More preferably, the return air pipe support sleeve in this embodiment is made of 301 stainless steel.

[0046] Those skilled in the art can understand that the support sleeve needs to have a certain elasticity. At the same time, the internal temperature of the carbon dioxide laser is relatively high during operation, and the support sleeve also needs to meet the working condition requirements of the carbon dioxide laser. Preferably, the support sleeve is made of elastic metal. Of course, other materials that meet the requirements can also be used for substitution.

[0047] Furthermore, the support sleeve is formed by stamping a whole piece of steel plate, and a notch is formed at the position corresponding to the elastic leg 2 on the cylinder 1. This is convenient for manufacturing and processing the support sleeve and can also save materials.

[0048] Embodiment 4

[0049] This embodiment provides a carbon dioxide laser, which includes a discharge tube, a water-cooling tube sleeved outside the discharge tube, a gas storage tube sleeved outside the water-cooling tube, an output window and a reflection window arranged at both ends, an anode chamber and a cathode chamber arranged at both ends of the discharge tube for placing electrodes, a return gas tube connected to the cathode chamber, and a return gas tube support sleeve screwed between the return gas tube and the water-cooling tube. The return gas tube support sleeve is the return gas tube support sleeve of any carbon dioxide laser of the present invention. The return gas tube support sleeve is located at one end of the return gas tube away from the cathode chamber, and the return gas tube support sleeve is located at the third or fourth section of the end of the return gas tube.

[0050] The carbon dioxide laser provided by the present invention includes the return gas tube support sleeve of any of the above-mentioned carbon dioxide lasers. Using the support sleeve to support the return gas tube avoids local stress generated by firing a glass column for support and improves the overall strength of the carbon dioxide laser; the support sleeve includes at least three elastic legs, providing relatively uniform multi-point support for the return gas tube, dispersing the acting force of the support sleeve on the return gas tube, and also improving the overall strength of the carbon dioxide laser; the support sleeve can provide a certain deformation margin. After assembly, when the carbon dioxide laser provided by the present invention encounters an impact, the risk of damage to the end of the return gas tube due to the impact is effectively reduced.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, 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 return air pipe support sleeve for a carbon dioxide laser, comprising a cylinder body (1), characterized in that, At least three elastic legs (2) are arranged on the outside of the cylinder (1), and the elastic legs (2) are arranged in a spiral arrangement along the axial direction of the cylinder (1). The elastic legs (2) include an arc segment (3) and a tilting segment (4). One end of the arc segment (3) is connected to the cylinder (1), and the other end of the arc segment (3) is connected to the tilting segment (4). The tilting segment (4) tilts away from the cylinder (1). An arc opening (5) is provided at one end of the tilting segment (4) away from the arc segment (3). The opening direction of the arc opening (5) is away from the cylinder (1). The arc opening (5) is used to support the outer wall of the return air pipe. The width of the arc segment (3) gradually decreases from one end to the other end, the wide end of the arc segment (3) is connected to the cylinder (1), and the narrow end of the arc segment (3) is connected to the warping segment (4); One end of the arc-shaped section (3) connected to the cylinder (1) is provided with a protruding section (6), and the protruding section (6) protrudes away from the cylinder (1).

2. The return air pipe support sleeve of a carbon dioxide laser according to claim 1, characterized in that, The elastic leg (2) closest to the end of the cylinder (1) is a positioning leg, the diameter of the arc-shaped opening (5) of the positioning leg is consistent with the diameter of the outer wall of the return air pipe, and the support sleeve only includes one positioning leg.

3. The return air pipe support sleeve of a carbon dioxide laser according to claim 2, characterized in that, The diameters of the arc-shaped openings (5) of the elastic legs (2) other than the positioning legs are the same and are larger than the diameter of the outer wall of the return air pipe.

4. The return air pipe support sleeve of a carbon dioxide laser according to claim 1, characterized in that The width of one end of the raised section (4) connected to the arc section (3) is greater than the narrow end of the arc section (3).

5. A return air pipe support sleeve for a carbon dioxide laser according to any one of claims 1-4, characterized in that, The elastic legs (2) are evenly arranged in the circumferential direction of the cylinder (1).

6. A return air pipe support sleeve for a carbon dioxide laser according to any one of claims 1-4, characterized in that, The cylinder (1) is provided with through grooves (7) passing through both ends along the generatrix.

7. A return air pipe support sleeve for a carbon dioxide laser according to any one of claims 1-4, characterized in that, The supporting sleeve is made of elastic metal.

8. A carbon dioxide laser, characterized in that, It also includes a return air pipe support sleeve for a carbon dioxide laser as described in any one of claims 1-7.

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