Carbon dioxide laser tube

Abstract

The utility model relates to a carbon dioxide laser tube, which comprises a gas storage tube, a water cooling tube and a discharge tube which are sequentially sleeved from outside to inside, and further comprises an integral sleeve, the integral sleeve is sleeved outside the water cooling tube and fixedly connected with the gas storage tube, and a plurality of first support cylinders which are arranged at intervals along the length direction of the water cooling tube are arranged between the integral sleeve and the water cooling tube. The first supporting cylinder sleeves and abuts against the water cooling pipe, and the first supporting cylinder abuts against the integral sleeve; the distance between the two first supporting cylinders located on the outermost edge is larger than or equal to half of the length of the water cooling pipe, and the first supporting cylinders are in sliding fit with the integral sleeve and / or the water cooling pipe. According to the utility model, the coaxiality between the water cooling pipe and the gas storage pipe can be improved; meanwhile, the bending phenomenon of the water cooling pipe under the influence of gravity is relieved or even eliminated; meanwhile, the laser tube adapts to the expansion amount difference value between the gas storage tube and the water cooling tube, the possibility that the first supporting tube is clamped between the integral sleeve and the water cooling tube is reduced, and then the stability of output light beams and output power of the laser tube is improved.

Description

Technical Field

[0001] The utility model relates to the field of laser tubes, in particular to a carbon dioxide laser tube. Background Art

[0002] The current carbon dioxide laser tube usually includes a discharge tube, a water cooling tube sleeved on the outside of the discharge tube, a gas storage tube sleeved on the outside of the water cooling tube, a cathode electrode and an anode electrode respectively arranged at both ends of the discharge tube, and an output window and a reflection window arranged at both ends of the gas storage tube, the reflection window includes a reflection lens and a reflection lens cooling device, the output window includes an output lens and an output lens cooling device, and the discharge tube is filled with carbon dioxide gas and other auxiliary gases; when a high voltage is applied to the electrodes, a glow discharge is generated in the discharge tube, which is reflected by the reflection lens and the output lens, so that photons repeatedly oscillate in the discharge tube to form a laser beam, which is emitted from the output lens to obtain the final laser beam.

[0003] In order to improve the stability of the laser beam output power, it is necessary to improve the coaxiality of the discharge tube, the water cooling tube and the gas storage tube as much as possible, and the end of the water cooling tube corresponding to the positive electrode of the discharge tube is relatively fixed to the gas storage tube, so it is necessary to support or fix the end of the water cooling tube corresponding to the negative electrode of the discharge tube. At present, most of them use glass columns to connect the water cooling tube and the gas storage tube, thereby supporting and fixing the negative electrode of the water cooling tube.

[0004] However, in the process of implementing the present invention, the inventors found that this support method has at least the following problems:

[0005] Due to the difference in heat dissipation between the gas storage tube and the water cooling tube when the laser tube is working, the gas storage tube and the water cooling tube may expand and contract differently due to heat expansion. At this time, a large force may be generated at the connection of the glass column, causing the water cooling tube to be deformed due to tension, affecting the coaxiality between the tubes, resulting in unstable output beam of the laser tube and reduced output power.

[0006] At the same time, for a longer water-cooling tube, the middle part of the tube may bend downward under the influence of gravity, resulting in unstable laser tube beam and power reduction. Utility Model Content

[0007] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and provide a carbon dioxide laser tube.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] In the first aspect, the utility model provides a carbon dioxide laser tube, comprising a gas storage tube, a water cooling tube and a discharge tube which are sequentially sleeved from the outside to the inside, and also comprising an integral sleeve; the integral sleeve is sleeved outside the water cooling tube and fixedly connected to the gas storage tube, and a plurality of first support tubes are further provided between the integral sleeve and the water cooling tube, the first support tubes are sleeved and abut against the water cooling tube, and at the same time, the first support tube abuts against the integral sleeve; a plurality of the first support tubes are spaced apart along the length direction of the water cooling tube, the spacing between the two first support tubes at the outermost edges is greater than or equal to half the length of the water cooling tube, and the first support tube is slidably fitted with the integral sleeve and / or the water cooling tube.

[0010] As a preferred solution of the utility model, the number of the first support tubes is 3 or more; the spacing between adjacent first support tubes decreases continuously or discontinuously along the direction approaching the cathode electrode of the discharge tube.

[0011] As a preferred solution of the present utility model, the number of the first support tubes is 3 or more, and the spacing between adjacent first support tubes is consistent.

[0012] As a preferred solution of the utility model, both ends of the integral sleeve are respectively connected to the gas storage pipe.

[0013] As a preferred solution of the present utility model, the integral sleeve is a glass tube, and the integral sleeve and the gas storage tube are integrally connected via a glass column.

[0014] As a preferred solution of the utility model, there are multiple glass columns, and the multiple glass columns are divided into at least two glass column groups. Several glass columns in each glass column group are arranged on the same circumferential surface of the integral sleeve; the two glass column groups at the outermost edges are respectively connected to the two ends of the integral sleeve.

[0015] As a preferred solution of the utility model, a plurality of glass columns in each of the glass column groups are evenly spaced and arranged along the same circumferential surface of the integral sleeve.

[0016] As a preferred solution of the utility model, the first support cylinder includes a cylinder body and at least three legs, all of which are connected to the cylinder body; the cylinder body is sleeved and abuts against the water cooling pipe, and the free ends of all of the legs abut against the integral sleeve outwardly.

[0017] As a preferred solution of the utility model, spiral tubes are respectively provided at both ends of the water-cooling tube, and the integral sleeve is located between the two spiral tubes, and the distance between the integral sleeve and the two spiral tubes is 5cm-10cm.

[0018] In a second aspect, the utility model provides a processing method for processing a carbon dioxide laser tube as described in any of the above solutions, comprising the steps of:

[0019] Firstly, the first supporting tube and the integral sleeve are sleeved on the water cooling tube, and then the integral sleeve is cast and connected to the gas storage tube.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0021] 1. The utility model provides a carbon dioxide laser tube, which can support the middle part of the water-cooling tube through the arrangement of the integral sleeve and multiple first support tubes, thereby improving the coaxiality between the water-cooling tube and the gas storage tube. At the same time, the middle part of the water-cooling tube is supported at multiple points by multiple first support tubes, which can reduce or even eliminate the bending phenomenon of the middle position of the water-cooling tube body under the influence of gravity, so that the coaxiality between each tube body is always maintained in a relatively stable state, thereby improving the stability of the output beam and output power of the laser tube.

[0022] At the same time, through the sliding cooperation between the first support tube and the integral sleeve and / or the water-cooling tube, the difference in expansion and contraction between the gas storage tube and the water-cooling tube can be accommodated, thereby reducing or even eliminating the possible deformation of the water-cooling tube, so that the coaxiality between each tube body always remains in a relatively stable state, thereby improving the stability of the output beam and output power of the laser tube.

[0023] At the same time, by arranging multiple first support tubes at intervals along the length direction of the water-cooling tube, and the spacing between the two first support tubes at the outermost edges is greater than or equal to half the length of the water-cooling tube, multiple first support tubes can support multiple spaced-apart points of the entire water-cooling tube. At this time, the deformation amount of each point is split from the overall deformation amount, and the deformation amount of each point is greatly reduced compared with the overall deformation amount, making it difficult to drive each first support tube to move excessively. This can reduce the possibility of the first support tube being deflected and stuck between the overall sleeve and the water-cooling tube, thereby improving the stability of the output beam and output power of the laser tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the utility model.

[0025] Figure 2 for Figure 1 Schematic diagram of the middle AA direction.

[0026] Figure 3 This is a partial structural diagram of Example 1 of the utility model.

[0027] Markings in the figure: 1-gas storage tube, 2-water cooling tube, 3-discharge tube, 4-positive electrode, 5-negative electrode, 6-spiral tube, 7-first supporting tube, 71-support leg, 8-integral sleeve, 81-glass column. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in combination with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0029] In the description of the specific embodiments of the present invention, unless otherwise specified, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product / equipment / device of the utility model when it is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0031] In addition, the expressions “first”, “second”, “third”, etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0032] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0033] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.

[0034] Wherein, in the description of the embodiments of the present utility model, "axial direction" refers to the axial direction of the discharge tube of the carbon dioxide laser tube, unless otherwise specified.

[0035] Example 1

[0036] like Figures 1 to 3 As shown, embodiment 1 provides a carbon dioxide laser tube, including a gas storage tube 1, a water cooling tube 2 and a discharge tube 3 which are sequentially sleeved from the outside to the inside, the discharge tube 3 is filled with carbon dioxide gas and other auxiliary gases, and an anode electrode 4 and a cathode electrode 5 are respectively arranged at both ends of the discharge tube 3. When a high voltage is applied to the electrodes, a glow discharge is generated in the discharge tube 3, which is reflected by the lens, so that photons repeatedly oscillate in the discharge tube 3 to form a laser beam and emit.

[0037] On this basis, the water-cooling tube 2 needs to be supported. This embodiment adopts a non-fixed connection support structure. Specifically, an integral sleeve 8 and a plurality of first support tubes 7 are arranged between the gas storage tube 1 and the water-cooling tube 2. The integral sleeve 8 is sleeved outside the water-cooling tube 2 and fixedly connected to the gas storage tube 1, and the plurality of first support tubes 7 are arranged between the integral sleeve and the water-cooling tube 2; the integral sleeve 8 is sleeved outside all the first support tubes 7 at the same time, and the inner side of the integral sleeve 8 is simultaneously in contact with the outer side of all the first support tubes 7; all the first support tubes 7 are sleeved on the water-cooling tube 2 at the same time, and the inner sides of all the first support tubes 7 are simultaneously in contact with the outer side of the water-cooling tube 2; at this time, the integral sleeve 8 and the first support tube 7 cooperate to support the water-cooling tube 2, thereby improving the coaxiality of the water-cooling tube 2 and the gas storage tube 1.

[0038] Among them, by arranging multiple first support tubes 7 at intervals along the length direction of the water-cooling tube 2, the middle part of the water-cooling tube 2 can be supported at multiple points, thereby reducing or even eliminating the bending phenomenon of the middle position of the water-cooling tube 2 under the influence of gravity, so that the coaxiality between each tube body always remains in a relatively stable state, thereby improving the stability of the output beam and output power of the laser tube.

[0039] In addition, by arranging a plurality of the first support tubes 7 at intervals along the length direction of the water-cooling tube 2, and making the first support tube 7 slide and cooperate with the integral sleeve 8 and / or the water-cooling tube 2, it is possible to adapt to the difference in the expansion and contraction between the gas storage tube 1 and the water-cooling tube 2. Specifically, when the laser tube is working, when the gas storage tube 1 and the water-cooling tube 2 have different expansion and contraction amounts due to thermal expansion, the first support tube 7 and the integral sleeve 8 and / or the water-cooling tube 2 will produce adaptive axial sliding driven by the gas storage tube 1 and the water-cooling tube 2, thereby reducing or even eliminating the possible deformation of the water-cooling tube 2, so that the coaxiality between the various tube bodies always remains in a relatively stable state, thereby improving the stability of the laser tube output beam and output power.

[0040] In addition, by arranging a plurality of the first support tubes 7 at intervals along the length direction of the water-cooling tube 2 , the sliding stability of the first support tube 7 relative to the integral sleeve 8 and / or the water-cooling tube 2 can be improved.

[0041] It should be noted that in some schemes other than the present embodiment, there is a situation where multiple first support tubes 7 are concentrated at one end of the integral sleeve 8. For example, when the number of first support tubes 7 is 2-4, all first support tubes 7 are distributed in an area at one end of the end of the integral sleeve 8, and the length of this area is less than 1 / 3 of the length of the integral sleeve 8. At this time, it can be regarded as that multiple first support tubes 7 are concentrated at one end of the integral sleeve 8.

[0042] At this time, if it is necessary to adaptively slide the overall deformation between the gas storage tube 1 and the water-cooling tube 2, it may cause all the first support tubes 7 concentrated at one end of the overall sleeve 8 to move excessively, causing the first support tubes 7 to deflect and be stuck between the overall sleeve 8 and the water-cooling tube 2, making it difficult to continue sliding, which will affect the stability of the output beam and output power of the laser tube.

[0043] In this embodiment, the plurality of first support tubes 7 are arranged at intervals along the length direction of the water-cooling tube 2, and the interval between the two first support tubes 7 at the outermost edges is greater than or equal to half the length of the water-cooling tube 2, so that all the first support tubes 7 are avoided from being concentrated at one end of the integral sleeve 8. At this time, the plurality of first support tubes 7 are dispersedly arranged, and support a plurality of spaced-apart points of the water-cooling tube 2. At this time, the deformation amount of each point is split from the overall deformation amount, and the deformation amount of each point is greatly reduced compared with the overall deformation amount, so it is difficult to drive each first support tube 7 to produce excessive movement, thereby reducing the possibility of the first support tube 7 being deflected and stuck between the integral sleeve 8 and the water-cooling tube 2, thereby improving the stability of the output beam and output power of the laser tube.

[0044] The first supporting tube 7 may be any component that can be disposed between the integral sleeve 8 and the water-cooling tube 2 and supports the gap between the integral sleeve 8 and the water-cooling tube 2 .

[0045] In one or more embodiments, Figure 2 to Figure 3 As shown, the first support tube 7 includes a tube body and at least three legs 71, all of which are connected to the tube body; the tube body is sleeved and abuts against the outer surface of the water-cooling tube 2, and the free ends of all of the legs 71 abut against the inner surface of the integral sleeve 8. It has a simple structure, low cost, and is more suitable for the operation mechanism of the carbon dioxide laser tube.

[0046] Specifically, the three legs 71 of the first support tube 7 can be one elastic leg and two fixed legs, and the blade length of the elastic leg is greater than that of the fixed legs. The first support tube 7 under this structure can well offset the bending phenomenon of the water-cooling tube 2 under the influence of gravity, improve the coaxiality of the discharge tube 3, the water-cooling tube 2, and the gas storage tube 1, and reduce the possibility of unstable laser tube beam and power drop. In addition, when the laser tube is subjected to external impact, the first support tube 7 can provide vertical support force to reduce the impact on the water-cooling tube 2.

[0047] In addition, compared with the four-corner support bracket, the design of the three legs 71 utilizes the stability principle of the triangle to improve the stability of the first support tube 7. It also saves more space and is easier to cut during production, so that each leg 71 can be longer, meeting the requirement of a larger radial distance between the water cooling pipe 2 and the gas storage pipe 1, and better offsetting the external impact force.

[0048] Since the blade length of the elastic leg is longer than that of the fixed leg, when only one leg 71 is an elastic leg, the length of the elastic leg can be relatively longer, thereby meeting the requirement of a larger radial distance between the water cooling pipe 2 and the gas storage pipe 1, and better offsetting the external impact force.

[0049] In addition, the first support tube 7 can also be the first support tube of the integrated carbon dioxide laser tube discharge tube as mentioned in CN202333427U, or can be the first support tube for the carbon dioxide laser tube as mentioned in CN206148791U.

[0050] In one or more embodiments, the number of the first support tubes 7 is preferably 3 or more, and can be 3, 4, 5, etc. Among them, the two first support tubes 7 at the outermost edges are respectively located at the two ends of the integral sleeve 8, and the first support tube 7 in the middle can support the middle part of the water-cooling tube 2.

[0051] In one or more embodiments based on this, the expansion and contraction deformation of the gas storage tube 1 is mainly caused by two factors: the change of the external temperature and the radiation of the cathode electrode 5 to the gas storage tube 1 .

[0052] When the change of external temperature has a greater impact on the expansion and contraction of the gas storage tube 1, the expansion and contraction deformation of the gas storage tube 1 is relatively uniform. At this time, the deformation amount of each point is also relatively uniform. Therefore, it is preferred to make the spacing between adjacent first support tubes 7 consistent to adapt to the corresponding expansion and contraction trend of the gas storage tube 1.

[0053] When the radiation of the cathode electrode 5 to the gas storage tube 1 has a greater effect on the expansion and contraction of the gas storage tube 1, the expansion and contraction deformation of the gas storage tube 1 is not uniform, and the expansion and contraction amount of the end of the gas storage tube 1 close to the cathode electrode 5 is greater than that of the end of the gas storage tube 1 close to the anode electrode 4. Therefore, it is preferred to reduce the spacing between adjacent first support tubes 7 continuously or intermittently along the direction close to the cathode electrode 5 of the discharge tube 3 to adapt to the corresponding expansion and contraction trend of the gas storage tube 1.

[0054] The continuous reduction means that, in any two adjacent intervals, the width of the interval close to the cathode electrode 5 is always smaller than the width of the interval close to the anode electrode 4 .

[0055] The discontinuous reduction means that: in two adjacent intervals, the interval width close to the cathode electrode 5 is either the same as or smaller than the interval width close to the anode electrode 4; and, in the two intervals at the outermost edges, the interval width close to the cathode electrode 5 is always smaller than the interval width close to the anode electrode 4.

[0056] The integral sleeve 8 is preferably sleeved outside the middle tube section of the water-cooling tube 2. In one or more embodiments, when the carbon dioxide laser tube is provided with spiral tubes 6 at both the cathode 5 and the anode 4, the integral sleeve 8 can be located between the two spiral tubes 6, and the distance from the spiral tube 6 is 5 cm-10 cm.

[0057] As for the connection between the integral sleeve 8 and the gas storage pipe 1 , the outer side surface of the integral sleeve 8 may be connected to the gas storage pipe 1 , or only the two ends of the integral sleeve 8 may be connected to the gas storage pipe 1 .

[0058] In one or more embodiments, the integral sleeve 8 may be a glass tube, and a glass column 81 is provided between the integral sleeve 8 and the gas storage tube 1, and the two ends of the glass column 81 are respectively connected to the integral sleeve 8 and the gas storage tube 1 through casting to achieve an integrated connection, thereby achieving the connection between the integral sleeve 8 and the gas storage tube 1.

[0059] The glass material of the integral sleeve 8 is consistent with that of the gas storage tube 1 , so that the deformation of the integral sleeve 8 and the gas storage tube 1 are synchronized, thereby facilitating adaptive arrangement of the plurality of first support tubes 7 according to the expansion and contraction trend of the gas storage tube 1 .

[0060] More specifically, there are multiple glass columns 81, and the multiple glass columns 81 are divided into at least two glass column groups. Several glass columns 81 in each glass column group are arranged on the same circumferential surface of the overall sleeve 8, and jointly connect and support the overall sleeve 8, thereby ensuring the stability and reliability of the overall sleeve 8, and further improving the stability of the coaxiality between the water-cooling tube 2 and the gas storage tube 1; the two glass column groups at the outermost edges are respectively connected to the two ends of the overall sleeve 8, thereby realizing that the two ends of the overall sleeve 8 are respectively connected to the gas storage tube 1.

[0061] Among them, several glass columns 81 in each glass column group are evenly spaced along the same circumferential surface of the integral sleeve 8, thereby further ensuring the stability and reliability of the integral sleeve 8, and further improving the stability of the coaxiality between the water-cooling tube 2 and the gas storage tube 1.

[0062] Example 2

[0063] A processing method is provided for processing a carbon dioxide laser tube as described in any one of Embodiment 1, comprising the steps of:

[0064] First, the first support tube 7 and the integral sleeve 8 are sleeved on the water-cooling tube 2 , and then the integral sleeve 8 is cast and connected to the gas storage tube 1 .

[0065] Among them, there may be processing errors between the first support tube 7 and the integral sleeve 8. At the same time, when the first support tube 7 and the integral sleeve 8 are sleeved on the water-cooling tube 2, positional deviation may occur. For example, when the cylinder of the first support tube 7 is opened outward from the slit thereon, the cross-section of the cylinder of the first support tube 7 will change from a circular shape to a shape that is approximately circular. Therefore, by first sleeve-mounting the first support tube 7 and the integral sleeve 8 on the water-cooling tube 2, and then casting the integral sleeve 8 to connect to the gas storage tube 1, the position of the integral sleeve 8 cast on the gas storage tube 1 can be adjusted to adapt to the above-mentioned processing errors or positional deviations, ensuring that the first support tube 7 and the integral sleeve 8 can provide a stable support effect, improve processing accuracy, and enhance the coaxiality of the gas storage tube 1 and the water-cooling tube 2.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon dioxide laser tube, comprising a gas storage tube (1), a water cooling tube (2) and a discharge tube (3) which are sequentially arranged from the outside to the inside, characterized in that: It also includes an integral sleeve (8); the integral sleeve (8) is sleeved outside the water-cooling pipe (2) and fixedly connected to the gas storage pipe (1); a plurality of first support tubes (7) are provided between the integral sleeve (8) and the water-cooling pipe (2); the first support tubes (7) are sleeved and abut against the water-cooling pipe (2); and at the same time, the first support tubes (7) abut against the integral sleeve (8); A plurality of the first support tubes (7) are arranged at intervals along the length direction of the water-cooling tube (2), and the distance between the two first support tubes (7) at the outermost edges is greater than or equal to half the length of the water-cooling tube (2). The first support tube (7) is slidably fitted with the integral sleeve (8) and / or the water-cooling tube (2).

2. A carbon dioxide laser tube according to claim 1, characterized in that: The number of the first supporting tubes (7) is 3 or more; The spacing between adjacent first support tubes (7) decreases continuously or discontinuously along a direction approaching the cathode electrode (5) of the discharge tube (3).

3. A carbon dioxide laser tube according to claim 1, characterized in that: The number of the first support tubes (7) is 3 or more, and the spacing between adjacent first support tubes (7) is consistent.

4. The carbon dioxide laser tube according to claim 1, characterized in that: Both ends of the integral sleeve (8) are respectively connected to the gas storage pipe (1).

5. The carbon dioxide laser tube according to claim 1, characterized in that: The integral sleeve (8) is a glass tube, and the integral sleeve (8) and the gas storage tube (1) are integrally connected via a glass column (81).

6. The carbon dioxide laser tube according to claim 5, characterized in that: The glass columns (81) are multiple in number, and the multiple glass columns (81) are divided into at least two glass column groups, and a plurality of glass columns (81) in each glass column group are arranged on the same circumferential surface of the integral sleeve (8); The two glass column groups at the outermost edges are respectively connected to the two ends of the integral sleeve (8).

7. The carbon dioxide laser tube according to claim 6, characterized in that: The plurality of glass columns (81) in each glass column group are evenly spaced and arranged along the same circumferential surface of the integral sleeve (8).

8. A carbon dioxide laser tube according to any one of claims 1 to 7, characterized in that: The first support cylinder (7) comprises a cylinder body and at least three legs (71), all of which are connected to the cylinder body; the cylinder body is sleeved on and abuts against the water cooling tube (2), and the free ends of all of which abut against the integral sleeve (8) outwardly.

9. A carbon dioxide laser tube according to any one of claims 1 to 7, characterized in that: The two ends of the water cooling tube (2) are respectively provided with spiral tubes (6); the integral sleeve (8) is located between the two spiral tubes (6), and the distance between the integral sleeve (8) and the two spiral tubes (6) is 5 cm to 10 cm.

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