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, a discharge tube, a first sliding support mechanism and a second sliding support mechanism, the first sliding supporting mechanism is provided with a first point position and a second point position, and the first sliding supporting mechanism is connected with the gas storage pipe at the first point position; the second sliding supporting mechanism is connected with the gas storage pipe, sleeves and abuts against the second point position, and the second sliding supporting mechanism and the first sliding supporting mechanism are in sliding fit in the axial direction; the first sliding supporting mechanism is arranged on the water cooling pipe in a sleeving mode and abuts against the water cooling pipe, and the first sliding supporting mechanism is in sliding fit with the water cooling pipe in the axial direction. According to the utility model, the possible pulling of the gas storage tube to the first sliding support mechanism can be reduced or even avoided, and meanwhile, the possible pulling of the gas storage tube to the water cooling tube can be reduced or even avoided, so that the coaxiality among the tube bodies is always kept in a relatively stable state, and the stability of output light beams and output power of the laser tube is further 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 thermal expansion during operation. 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. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and provide a carbon dioxide laser tube.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] In a 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 a first sliding support mechanism and a second sliding support mechanism; the first sliding support mechanism is axially distributed with a first point position and a second point position, and the first sliding support mechanism is connected to the gas storage tube at the first point position; the second sliding support mechanism is connected to the gas storage tube, and is sleeved and abutted against the second point position of the first sliding support mechanism, and the second sliding support mechanism and the first sliding support mechanism are axially slidably matched; the first sliding support mechanism is sleeved and abutted against the water cooling tube, and the first sliding support mechanism and the water cooling tube are axially slidably matched.

[0009] As a preferred embodiment of the present invention, the first sliding support mechanism includes an integral sleeve and a first sliding support member, and the integral sleeve is provided with the first point position and the second point position distributed along the axial direction; the integral sleeve, the first sliding support member and the water-cooling tube are sequentially sleeved and abutted from the outside to the inside, and the first sliding support member and the integral sleeve and / or the water-cooling tube are axially slidably matched.

[0010] As a preferred solution of the utility model, the first point is located at the end of the integral sleeve corresponding to the anode electrode of the discharge tube; the second point is located at the end of the integral sleeve corresponding to the cathode electrode of the discharge tube.

[0011] As a preferred solution of the utility model, the first sliding support member includes a plurality of first support tubes, which are arranged at intervals along the length direction of the water-cooling tube, and the first support tubes are axially slidably matched with the integral sleeve and / or the water-cooling tube.

[0012] As a preferred solution of the utility model, the end of the integral sleeve corresponding to the cathode electrode of the discharge tube has a reduced diameter section, and the second sliding support mechanism is sleeved and abuts against the reduced diameter section.

[0013] As a preferred solution of the utility model, the reduced diameter section is sleeved on and abuts against the water cooling pipe.

[0014] As a preferred solution of the utility model, the integral sleeve is a glass tube, and the integral sleeve and the gas storage tube are integrally connected via a first glass column.

[0015] As a preferred solution of the present utility model, there are multiple first glass columns, and the multiple first glass columns are arranged on the same circumferential surface of the integral sleeve.

[0016] As a preferred embodiment of the present invention, the second sliding support mechanism includes an external sleeve and a second sliding support member; the external sleeve, the second sliding support member and the integral sleeve are sequentially sleeved and abutted from the outside to the inside, and the external sleeve is connected to the air storage pipe; wherein the second sliding support member and the integral sleeve and / or the external sleeve are axially slidably matched.

[0017] As a preferred embodiment of the present invention, the second sliding support member includes an inner sleeve and at least one second supporting tube, and the outer sleeve, the second supporting tube, the inner sleeve and the integral sleeve are sequentially sleeved and abutted from the outside to the inside; the inner sleeve and the integral sleeve are axially slidably matched.

[0018] As a preferred solution of the present utility model, the length of the inner sleeve is greater than or equal to 2.5 times the diameter of the inner sleeve.

[0019] As a preferred solution of the present invention, the outer sleeve is a glass tube, and the outer sleeve and the gas storage tube are integrally connected via a second glass column.

[0020] As a preferred solution of the present invention, there are multiple second glass columns, and the multiple second glass columns are arranged on the same circumferential surface of the outer sleeve.

[0021] 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:

[0022] First, the outer sleeve, the second sliding support, the integral sleeve and the first sliding support are sleeved on the water cooling pipe, and then the integral sleeve and the outer sleeve are cast to connect the gas storage pipe.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0024] 1. The utility model provides a carbon dioxide laser tube, which can reduce or even avoid the possible pulling of the gas storage pipe on the first sliding support mechanism through the sliding cooperation between the first sliding support mechanism and the second sliding support mechanism, so that the first sliding support mechanism always maintains a relatively stable state, thereby improving the supporting effect of the first sliding support mechanism on the water-cooling pipe, thereby improving the coaxiality of the water-cooling pipe and the gas storage pipe; at the same time, through the sliding cooperation between the first sliding support mechanism and the second sliding support mechanism, it can reduce or even avoid the possible pulling of the gas storage pipe on the water-cooling pipe, thereby reducing or even eliminating the possible deformation of the water-cooling pipe, so that the coaxiality between each tube body always maintains a relatively stable state, thereby improving the stability of the output beam and output power of the laser tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the utility model.

[0026] Figure 2 for Figure 1 Schematic diagram of the middle AA direction.

[0027] Figure 3 for Figure 1 Schematic diagram of the middle BB direction.

[0028] Figure 4 This is a partial structural diagram of Example 1 of the utility model.

[0029] Markings in the figure: 1-gas storage tube, 2-water cooling tube, 3-discharge tube, 31-positive electrode, 32-negative electrode, 4-spiral tube, 51-first supporting tube, 52-second supporting tube, 53-support leg, 6-integral sleeve, 61-reduced diameter section, 62-first glass column, 7-inner sleeve, 8-outer sleeve, 81-second glass column. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Example 1

[0038] like Figures 1 to 4As 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, wherein the discharge tube 3 is filled with carbon dioxide gas and other auxiliary gases, and an anode electrode 31 and a cathode electrode 32 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.

[0039] On this basis, the water-cooling tube 2 needs to be supported. This embodiment adopts a non-fixed connection support structure. Specifically, a first sliding support mechanism and a second sliding support mechanism are arranged between the gas storage tube 1 and the water-cooling tube 2. The first sliding support mechanism has a first point and a second point distributed along the axial direction. The first sliding support mechanism is connected to the gas storage tube 1 at the first point; the second sliding support mechanism is connected to the gas storage tube 1, and is sleeved and abutted against the second point of the first sliding support mechanism. The second sliding support mechanism and the first sliding support mechanism slide in axial cooperation; the first sliding support mechanism is sleeved and abutted against the water-cooling tube 2, so that the first sliding support mechanism can support the water-cooling tube 2. The first sliding support mechanism and the water-cooling tube 2 slide in axial cooperation.

[0040] The water-cooling pipe 2 can be supported by the first sliding support mechanism, thereby improving the coaxiality between the water-cooling pipe 2 and the gas storage pipe 1 .

[0041] Among them, the first sliding support mechanism is supported by the gas storage tube 1 at the first point and the second point distributed along the axial direction to improve the stability of the first sliding support mechanism, thereby improving the supporting effect of the first sliding support mechanism on the water cooling tube 2. On this basis, considering that there may also be a difference in heat dissipation between the first sliding support mechanism and the gas storage tube 1, a certain difference in expansion and contraction between the first sliding support mechanism and the gas storage tube 1 due to thermal expansion during operation is generated, especially when the distance between the first point and the second point is large, the difference in expansion and contraction between the first sliding support mechanism and the gas storage tube 1 is also correspondingly large. If the first sliding support mechanism is directly fixedly connected to the gas storage tube 1 at the first point and the second point, the gas storage tube 1 may pull the first sliding support mechanism due to the large difference in expansion and contraction between the first sliding support mechanism and the gas storage tube 1, thereby causing the first sliding support mechanism to deflect. At this time, the first sliding support mechanism cannot play a role in improving the coaxiality of the water cooling tube 2 and the gas storage tube 1, but may cause the water cooling tube 2 to deflect, resulting in unstable output beams and reduced output power of the laser tube.

[0042] Here, in order to reduce or even avoid the impact caused by the difference in expansion and contraction between the first sliding support mechanism and the gas storage pipe 1, the first sliding support mechanism is connected to the gas storage pipe 1 at a second point through a second sliding support mechanism, and the second sliding support mechanism is axially slidably matched with the first sliding support mechanism, thereby adapting to the difference in expansion and contraction between the gas storage pipe 1 and the first sliding support mechanism, reducing or even avoiding the possible pulling of the gas storage pipe 1 on the first sliding support mechanism.

[0043] Specifically, when the gas storage pipe 1 and the first sliding support mechanism produce different amounts of expansion and contraction due to thermal expansion, the first sliding support mechanism and the second sliding support mechanism will produce adaptive axial sliding under the drive of the gas storage pipe 1 and the first sliding support mechanism, thereby reducing or even avoiding the possible pulling of the gas storage pipe 1 on the first sliding support mechanism, so that the first sliding support mechanism maintains a relatively stable state, thereby ensuring the supporting effect of the first sliding support mechanism on the water-cooling pipe 2.

[0044] When the first sliding support mechanism remains in a relatively stable state, the water-cooling tube 2 and the first sliding support mechanism are axially slidably matched to adapt to the difference in expansion and contraction between the gas storage tube 1 and the water-cooling tube 2, thereby reducing or even avoiding possible pulling of the gas storage tube 1 on the water-cooling tube 2.

[0045] Specifically, when the gas storage tube 1 and the water-cooling tube 2 have different expansion and contraction amounts due to thermal expansion, the first sliding support mechanism and the water-cooling tube 2 will produce adaptive axial sliding under the drive of the gas storage tube 1 and the water-cooling tube 2, thereby reducing or even avoiding the possible pulling of the gas storage tube 1 on the water-cooling tube 2, and further 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 output beam and output power of the laser tube.

[0046] To sum up, through the sliding cooperation between the first sliding support mechanism and the second sliding support mechanism, the possible pulling of the gas storage pipe 1 on the first sliding support mechanism can be reduced or even avoided, so that the first sliding support mechanism always maintains a relatively stable state, thereby improving the supporting effect of the first sliding support mechanism on the water-cooling pipe 2, thereby improving the coaxiality of the water-cooling pipe 2 and the gas storage pipe 1; at the same time, through the sliding cooperation between the first sliding support mechanism and the second sliding support mechanism, the possible pulling of the gas storage pipe 1 on the water-cooling pipe 2 can be reduced or even avoided, thereby reducing or even eliminating the possible deformation of the water-cooling pipe 2, so that the coaxiality between the various tube bodies always maintains a relatively stable state, thereby improving the stability of the output beam and output power of the laser tube.

[0047] The first sliding support mechanism can be a single component, which is directly connected to the gas storage pipe 1 and is directly sleeved on and abuts against the water cooling pipe 2; or it can be a plurality of components that cooperate with each other, some of which are connected to the gas storage pipe 1 and slide with the water cooling pipe 2 through the remaining components.

[0048] In one or more embodiments, the first sliding support mechanism includes an integral sleeve 6 and a first sliding support member, the integral sleeve 6 is axially distributed with the first point position and the second point position, the integral sleeve 6 is connected to the gas storage pipe 1 at the first point position, and the second sliding support mechanism is sleeved at the second point position of the integral sleeve 6; the integral sleeve 6, the first sliding support member and the water-cooling tube 2 are sequentially sleeved and abutted from the outside to the inside, and the first sliding support member and the integral sleeve 6 and / or the water-cooling tube 2 are axially slidably matched.

[0049] The integral sleeve 6 is sleeved outside the middle section of the water-cooling pipe 2, and the integral sleeve 6 and the first sliding support cooperate to support the water-cooling pipe 2, thereby improving the coaxiality between the water-cooling pipe 2 and the gas storage pipe 1. At this time, the expansion and contraction of the first sliding support mechanism is mainly generated by the integral sleeve 6.

[0050] On this basis, the expansion and contraction of most sections of the integral sleeve 6 are relatively uniform. However, the end of the integral sleeve 6 corresponding to the cathode electrode 32 of the discharge tube 3 is heated highly under the radiation of the cathode electrode 32 of the discharge tube 3, and may produce uneven expansion and contraction. Therefore, in order to minimize the influence of uneven expansion and contraction on the integral sleeve 6, it is preferred to arrange the second sliding support mechanism at the end of the integral sleeve 6 corresponding to the cathode electrode 32 of the discharge tube 3, that is, the second point is located at the end of the integral sleeve 6 corresponding to the cathode electrode 32 of the discharge tube 3, thereby further adapting to the uneven expansion and contraction of the corresponding end of the integral sleeve 6 through the sliding of the second sliding support mechanism.

[0051] On this basis, one of the points at the end of the integral sleeve 6 corresponding to the anode electrode 31 of the discharge tube 3 can be used as the first point, thereby improving the supporting capacity of the integral sleeve 6 and ensuring the stability of the integral sleeve 6 by supporting the corresponding points at both ends of the integral sleeve 6.

[0052] The shape of the overall sleeve 6 can be cylindrical or a columnar structure with a reduced diameter at one end.

[0053] In one or more embodiments, in order to provide space for placing the second sliding support mechanism between the water-cooling tube 2 and the gas storage tube 1, the integral sleeve 6 can be reduced in diameter at the end portion corresponding to the cathode electrode 32 of the discharge tube 3 to form a reduced diameter section 61, so that the inner diameter of the end portion is as close as possible to the water-cooling tube 2, thereby forming space for placing the second sliding support mechanism between the reduced diameter section 61 and the gas storage tube 1.

[0054] The outer surface of the reduced diameter section 61 is preferably cylindrical.

[0055] On this basis, the inner diameter of the reduced diameter section 61 can be adapted to the outer diameter of the water cooling tube 2, so that the reduced diameter section 61 is sleeved and abuts against the water cooling tube 2. At this time, the reduced diameter section 61 cooperates with the first sliding support member to support the water cooling tube 2.

[0056] For the first sliding support, in one or more embodiments, the first sliding support includes a plurality of first support tubes 51, and the plurality of support tubes are arranged at intervals along the length direction of the water-cooling tube 2, and the support tubes are axially slidably fitted with the integral sleeve 6 and / or the water-cooling tube 2.

[0057] By arranging the plurality of first support tubes 51 at intervals along the length direction of the water-cooling tube 2, the middle portion of the water-cooling tube 2 can be supported at multiple points, thereby reducing or even eliminating the bending phenomenon of the middle portion of the water-cooling tube 2 under the influence of gravity, so that the coaxiality between the various tube bodies is always kept in a relatively stable state, thereby improving the stability of the output beam and output power of the laser tube.

[0058] It should be noted that in some solutions other than the present embodiment, if only one first support tube 51 is provided, or multiple first support tubes 51 are too close to each other, at this time, if it is necessary to adaptively slide the overall deformation amount between the gas storage tube 1 and the water-cooling tube 2, all the first support tubes 51 may be driven to move excessively, causing the first support tubes 51 to deflect and be stuck between the integral sleeve 6 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.

[0059] In this embodiment, a plurality of the first support tubes 51 are arranged at intervals along the length direction of the water-cooling tube 2, thereby supporting 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, making it difficult to drive each of the first support tubes 51 to produce excessive movement. This can reduce the possibility of the first support tube 51 being deflected and stuck between the overall sleeve 6 and the water-cooling tube 2, thereby improving the stability of the output beam and output power of the laser tube.

[0060] In one or more embodiments, the number of the first support tubes 51 is preferably 3 or more, and may be 3, 4, 5, etc. Among them, the first support tube 51 farthest from the reduced diameter section 61 is located at the end of the integral sleeve 6 facing the anode electrode 31, and the other first support tubes 51 can support the middle part of the water-cooling tube 2.

[0061] On this basis, multiple first support tubes 51 can only be arranged in part of the integral sleeve 6 section except the reduced diameter section 61, so there is a certain distance between the first support tube 51 and the cathode electrode 32 of the discharge tube 3, and the uneven expansion and contraction of the integral sleeve 6 under the influence of the cathode electrode 32 of the discharge tube 3 is concentrated on the corresponding end of the integral sleeve 6, while the part of the integral sleeve 6 section that cooperates with the first support tube 51 is not affected too much, and this part of the integral sleeve 6 section can be regarded as uniform expansion and contraction. Therefore, the arrangement of the first support tubes 51 can be adaptively set to: the spacing between adjacent first support tubes 51 is consistent.

[0062] In one or more embodiments, in order to ensure the supporting effect of the first sliding support mechanism on the water-cooling tube 2 , the distance between the reduced diameter section 61 and the farthest first support tube 51 can be greater than or equal to half the length of the water-cooling tube 2 .

[0063] The first supporting tube 51 may be any component that can be disposed between the integral sleeve 6 and the water-cooling tube 2 and supports the gap between the integral sleeve 6 and the water-cooling tube 2 .

[0064] In one or more embodiments, Figure 2 As shown, the first support tube 51 includes a tube body and at least three legs 53, 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 53 abut against the inner surface of the integral sleeve 6. It has a simple structure, low cost, and is more suitable for the operation mechanism of the carbon dioxide laser tube.

[0065] Specifically, the three legs 53 of the first support tube 51 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 51 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 reduction. In addition, when the laser tube is subjected to external impact, the first support tube 51 can provide vertical support force to reduce the impact on the water-cooling tube 2.

[0066] In addition, compared with the four-corner support bracket, the design of the three legs 53 utilizes the stability principle of the triangle to improve the stability of the first support tube 51. It also saves more space and is easier to cut during production, so that each leg 53 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.

[0067] Since the blade length of the elastic leg is longer than that of the fixed leg, when only one leg 53 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.

[0068] In addition, the first support tube 51 may also be an integrated carbon dioxide laser tube discharge tube support tube as mentioned in CN202333427U, or may be a support tube for a carbon dioxide laser tube as mentioned in CN206148791U.

[0069] The integral sleeve 6 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 4 at both the cathode 32 and the anode 31, the integral sleeve 6 can be located between the two spiral tubes 4, and the distance from the spiral tube 4 is 5 cm-10 cm.

[0070] In one or more embodiments, the integral sleeve 6 can be a glass tube, and a first glass column 62 is provided at the first point of the integral sleeve 6. The two ends of the first glass column 62 are respectively connected to the integral sleeve 6 and the gas storage pipe 1 through casting to achieve an integrated connection, thereby achieving the connection between the first point of the integral sleeve 6 and the gas storage pipe 1.

[0071] Among them, the glass material of the overall sleeve 6 is consistent with the glass material of the gas storage tube 1, so that the expansion and contraction amount of the overall sleeve 6 and the gas storage tube 1 are as close as possible, thereby minimizing the expansion and contraction amount difference between the overall sleeve 6 and the gas storage tube 1 and further improving the stability of the overall sleeve 6.

[0072] More specifically, the number of the first glass columns 62 is multiple, and the multiple first glass columns 62 are arranged on the same cross section (i.e., circumferential surface) of the integral sleeve 6, that is, at least two first glass columns 62 are arranged on a cross section (i.e., circumferential surface) of the integral sleeve 6. At this time, the multiple first glass columns 62 jointly connect and support the integral sleeve 6, thereby ensuring the stability and reliability of the first point of the integral sleeve 6, thereby improving the stability of the coaxiality between the water-cooling tube 2 and the gas storage tube 1; at the same time, at this time, the multiple first glass columns 62 are in the same axial position, so when the difference in expansion and contraction occurs between the integral sleeve 6 and the gas storage tube 1, the gas storage tube 1 will not pull the partial barrel section of the integral sleeve 6 provided with the first glass columns 62, thereby further improving the stability of the integral sleeve 6.

[0073] Among them, multiple first glass columns 62 are evenly spaced along the same cross-section (i.e., circumferential surface) of the integral sleeve 6, thereby further ensuring the stability and reliability of the integral sleeve 6, thereby improving the stability of the coaxiality between the water-cooling tube 2 and the gas storage tube 1.

[0074] The second sliding support may be a separate component, which is directly connected to the gas storage pipe 1 and is directly sleeved on and abuts against the integral sleeve 6; or it may be a plurality of components that cooperate with each other, some of which are connected to the gas storage pipe 1 and slide with the integral sleeve 6 through the remaining components.

[0075] In one or more embodiments, the second sliding support mechanism includes an external sleeve 8 and a second sliding support member; the external sleeve 8, the second sliding support member and the integral sleeve 6 are sequentially sleeved and abutted from the outside to the inside, and the external sleeve 8 is connected to the air storage pipe 1; wherein the second sliding support member and the integral sleeve 6 and / or the external sleeve 8 are axially slidably matched.

[0076] At this time, the outer sleeve 8 and the second sliding support member cooperate to support the whole sleeve 6. On this basis, the second sliding support mechanism is sleeved and abutted against the reduced diameter section 61 of the whole sleeve 6, and the reduced diameter section 61 of the whole sleeve 6 is sleeved and abutted against the water cooling pipe 2. Therefore, the outer sleeve 8, the second sliding support member and the reduced diameter section 61 cooperate to support the water cooling pipe 2, thereby improving the coaxiality of the water cooling pipe 2 and the gas storage pipe 1.

[0077] It should be noted that the axial length of the outer sleeve 8 is smaller than that of the integral sleeve 6 . Therefore, the difference in the amount of expansion and contraction that can be produced between the outer sleeve 8 and the gas storage pipe 1 is small, and it is difficult to cause excessive interference to the stability of the integral sleeve 8 .

[0078] For the second sliding support, in one or more embodiments, the second sliding support includes an inner sleeve 7 and at least one second support tube 52, and the outer sleeve 8, the second support tube 52, the inner sleeve 7 and the integral sleeve 6 are sequentially sleeved and abutted from the outside to the inside; the inner sleeve 7 and the integral sleeve 6 are axially slidably matched.

[0079] The second supporting cylinder 52 may be any component that can be disposed between the outer sleeve 8 and the inner sleeve 7 and supports the gap between the outer sleeve 8 and the inner sleeve 7 .

[0080] In one or more embodiments, Figure 3 to Figure 4 As shown, the second support cylinder 52 includes a cylinder body and at least three legs 53, all of which are connected to the cylinder body; the cylinder body is sleeved and abuts against the outer surface of the inner sleeve 7, and the free ends of all of the legs 53 abut outward against the inner surface of the outer sleeve 8. It has a simple structure, low cost, and is more suitable for the operating mechanism of the carbon dioxide laser tube.

[0081] Specifically, the three legs 53 of the second support tube 52 may be one elastic leg 53 and two fixed legs 53, and the blade length of the elastic leg 53 is greater than that of the fixed leg 53. When the laser tube is subjected to external impact, the second support tube 52 can provide vertical support force to reduce the impact on the water cooling tube 2.

[0082] In addition, compared with the four-corner support bracket, the design of the three legs 53 utilizes the stability principle of the triangle to improve the stability of the second support tube 52. It also saves more space and is easier to cut during production, so that each leg 53 can be longer, meeting the requirement of a larger radial distance between the reduced diameter section 61 and the gas storage pipe 1, and better offsetting the external impact force.

[0083] Since the blade length of the elastic leg is longer than that of the fixed leg, when only one leg 53 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 reduced diameter section 61 and the gas storage pipe 1 and better offsetting external impact force.

[0084] In addition, the second support tube 52 may also be an integrated carbon dioxide laser tube discharge tube support tube as mentioned in CN202333427U, or may be a support tube for a carbon dioxide laser tube as mentioned in CN206148791U.

[0085] The body of the second support tube 52 has a second slit (not shown in the figure), and the body of the second support tube 52 can be opened outward from the second slit.

[0086] The number of the second support tube 52 may be 1, preferably at least 2. Figure 1 and Figure 4 As shown, a plurality of the second support tubes 52 are spaced apart and distributed along the axial direction of the inner sleeve 7, thereby providing sufficient support force. Based on this preferred solution, two second support tubes 52 are preferably sleeved near both ends of the inner sleeve 7, respectively.

[0087] In one or more embodiments, considering that the axial length of the second support tube 52 is relatively short and the two second support tubes 52 are too close to each other, when sliding occurs between the second support tube 52 and other components, there is a possibility that the second support tube 52 is stuck between the inner sleeve 7 and the outer sleeve 8 due to the deflection of the second support tube 52 itself. Therefore, it is preferred to reduce or even eliminate the possible deformation of the water-cooling tube 2 by axial sliding between the inner sleeve 7 and the integral sleeve 6, thereby avoiding sliding between the second support tube 52 and other components and reducing the possibility of the second support tube 52 being stuck between the inner sleeve 7 and the outer sleeve 8.

[0088] Specifically, the friction force between the surfaces of the inner sleeve 7 and the integral sleeve 6 that abut against each other is defined as the first friction force, the friction force between the second support tube 52 and the inner sleeve 7 is defined as the second friction force, and the friction force between the outer sleeve 8 and the second support tube 52 is defined as the third friction force. By making the surfaces of the inner sleeve 7 and the integral sleeve 6 that abut against each other sufficiently smooth, the first friction force can be made smaller than the second friction force and the third friction force. Therefore, when the gas storage pipe 1 and the integral sleeve 6 have different expansion and contraction amounts due to thermal expansion, axial sliding occurs first between the inner sleeve 7 and the integral sleeve 6, and sliding is not likely to occur between the second support tube 52 and other components, thereby reducing the possibility of the second support tube 52 being stuck between the inner sleeve 7 and the outer sleeve 8.

[0089] On this basis, in order to reduce the possibility of the inner sleeve 7 getting stuck, it is preferred that the length of the inner sleeve 7 is greater than or equal to 2.5 times the diameter of the inner sleeve 7, specifically 3 times, wherein the diameter of the inner sleeve 7 is equal to or slightly smaller than the outer diameter of the reduced diameter section 61.

[0090] In one or more embodiments, the connection relationship between the inner sleeve 7 and the overall sleeve 6 can be an interference fit, or a slit can be provided on the inner sleeve 7 so that the inner sleeve 7 can be clamped on the overall sleeve 6 by causing a certain elastic deformation of the inner sleeve 7 outward from the slit.

[0091] In order to reduce the friction between the inner sleeve 7 and the overall sleeve 6, a slit may be provided on the inner sleeve 7. Specifically, a first slit (not shown in the figure) may be provided on the cylinder of the inner sleeve 7 along the axial direction, wherein the first slit cuts one side of the inner sleeve 7 so that the inner sleeve 7 can be opened outward from the first slit. Compared with the interference fit between the inner sleeve 7 and the overall sleeve 6, in the scheme of providing a slit on the inner sleeve 7, the pressure exerted by the inner sleeve 7 on the overall sleeve 6 is smaller, thereby reducing the friction between the inner sleeve 7 and the overall sleeve 6, and further, when the gas storage pipe 1 and the overall sleeve 6 have different expansion and contraction amounts due to thermal expansion, the inner sleeve 7 and the overall sleeve 6 will preferentially slide in the axial direction.

[0092] Based on the above embodiment, the inner sleeve 7 can be a metal tube whose inner wall is smooth, so that an appropriate first friction coefficient is formed between the surfaces of the inner sleeve 7 and the integral sleeve 6 that abut each other; at the same time, the wall thickness of the metal tube is relatively thin, so that the metal tube can produce a certain elastic deformation from the cut to the outside.

[0093] In one or more embodiments, for the cooperation between the second support tube 52 and the internal sleeve 7, it is preferred that when the second support tube 52 is sleeved on the internal sleeve 7, the first slit and the second slit are aligned, so that the second support tube 52 and the internal sleeve 7 can be opened synchronously from the first slit and the second slit, thereby reducing the resistance force generated by the second support tube 52 to the opening of the internal sleeve 7 and facilitating the sliding of the internal sleeve 7 on the overall sleeve 6.

[0094] In one or more embodiments, the outer sleeve 8 can be a glass tube, and a second glass column 81 is provided between the outer sleeve 8 and the gas storage tube 1, and the two ends of the second glass column 81 are respectively connected to the outer sleeve 8 and the gas storage tube 1 through integral casting, thereby realizing the connection between the outer sleeve 8 and the gas storage tube 1.

[0095] Among them, the glass material of the outer sleeve 8 is consistent with the glass material of the gas storage tube 1, so that the expansion and contraction amount of the outer sleeve 8 and the gas storage tube 1 are as close as possible, thereby minimizing the expansion and contraction amount difference between the outer sleeve 8 and the gas storage tube 1, further improving the stability of the outer sleeve 8, and further improving the stability of the overall sleeve 6.

[0096] The number of the second glass columns 81 is preferably multiple, and the multiple second glass columns 81 are arranged on the same cross section (i.e., circumferential surface) of the outer sleeve 8, that is, at least two second glass columns 81 are arranged on a cross section (i.e., circumferential surface) of the outer sleeve 8. At this time, the multiple second glass columns 81 jointly connect and support the outer sleeve 8, thereby ensuring the stability and reliability of the outer sleeve 8, and then ensuring the stability and reliability of the second point of the overall sleeve 6, thereby improving the stability of the coaxiality between the water-cooling tube 2 and the gas storage tube 1; at the same time, at this time, the multiple second glass columns 81 are in the same axial position, so when the difference in expansion and contraction occurs between the outer sleeve 8 and the gas storage tube 1, the gas storage tube 1 will not pull the part of the outer sleeve 8 provided with the second glass columns 81, thereby further improving the stability of the outer sleeve 8, and then ensuring the stability and reliability of the second point of the overall sleeve 6.

[0097] Among them, all the second glass columns 81 are evenly spaced along the same cross section (i.e., the circumferential surface) of the outer sleeve 8, thereby further ensuring the stability and reliability of the outer sleeve 8, thereby improving the stability of the coaxiality between the water-cooling tube 2 and the gas storage tube 1.

[0098] Example 2

[0099] A processing method is provided for processing a carbon dioxide laser tube as described in any one of Embodiment 1, comprising the steps of:

[0100] First, the outer sleeve 8 , the second sliding support member, the integral sleeve 6 and the first sliding support member are sleeved on the water-cooling pipe 2 , and then the integral sleeve 6 and the outer sleeve 8 are cast and connected to the gas storage pipe 1 .

[0101] Among them, there may be processing errors among the outer sleeve 8, the second sliding support, the integral sleeve 6 and the first sliding support. At the same time, if a first support tube 51, a second support tube 52 or an inner sleeve 7 is provided, when the first support tube 51, the second support tube 52 or the inner sleeve 7 and other components with slits are sleeved on the water-cooling pipe 2, position deviation may occur. For example, when the body of the first support tube 51 opens outward from the slits thereon, the cross-section of the body of the first support tube 51 will change from a circular shape to a shape that is approximately circular. Therefore, by first sleeve-ing the outer sleeve 8, the second sliding support, the integral sleeve 6 and the first sliding support on the water-cooling pipe 2, and then casting and connecting the integral sleeve 6 and the outer sleeve 8 to the gas storage pipe 1, the positions of the integral sleeve 6 and the outer sleeve 8 cast on the gas storage pipe 1 can be adjusted to adapt to the above-mentioned processing errors or position deviations, ensuring that the outer sleeve 8, the second sliding support, the integral sleeve 6 and the first sliding support can provide a stable support effect, improve processing accuracy, and enhance the coaxiality of the gas storage pipe 1 and the water-cooling pipe 2.

[0102] 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: Also includes a first sliding support mechanism and a second sliding support mechanism; The first sliding support mechanism is sleeved on and abuts against the water cooling tube (2), and the first sliding support mechanism and the water cooling tube (2) are slidably matched along the axial direction; The first sliding support mechanism has a first point and a second point distributed along the axial direction, and the first sliding support mechanism is connected to the gas storage pipe (1) at the first point; The second sliding support mechanism is connected to the gas storage pipe (1), and is sleeved on and abuts against the second point of the first sliding support mechanism. The second sliding support mechanism and the first sliding support mechanism are axially slidably matched.

2. A carbon dioxide laser tube according to claim 1, characterized in that: The first sliding support mechanism comprises an integral sleeve (6) and a first sliding support member, and the integral sleeve (6) is provided with the first point position and the second point position distributed along the axial direction; The integral sleeve (6), the first sliding support member and the water cooling tube (2) are sequentially sleeved and abutted from the outside to the inside, and the first sliding support member and the integral sleeve (6) and / or the water cooling tube (2) are axially slidably matched.

3. A carbon dioxide laser tube according to claim 2, characterized in that: The first point is located at the end of the integral sleeve (6) corresponding to the positive electrode (31) of the discharge tube (3); and the second point is located at the end of the integral sleeve (6) corresponding to the negative electrode (32) of the discharge tube (3).

4. A carbon dioxide laser tube according to claim 2, characterized in that: The first sliding support member comprises a plurality of first support tubes (51), wherein the plurality of first support tubes (51) are arranged at intervals along the length direction of the water-cooling tube (2), and the first support tubes (51) are axially slidably matched with the integral sleeve (6) and / or the water-cooling tube (2).

5. A carbon dioxide laser tube according to claim 4, characterized in that: The integral sleeve (6) has a reduced diameter section (61) at the end portion corresponding to the cathode electrode (32) of the discharge tube (3), and the second sliding support mechanism is sleeved on and abuts against the reduced diameter section (61).

6. The carbon dioxide laser tube according to claim 5, characterized in that: The reduced diameter section (61) is sleeved on and abuts against the water cooling pipe (2).

7. The carbon dioxide laser tube according to claim 2, characterized in that: The integral sleeve (6) is a glass tube, and the integral sleeve (6) and the gas storage tube (1) are integrally connected via a first glass column (62).

8. The carbon dioxide laser tube according to claim 7, characterized in that: The number of the first glass columns (62) is multiple, and the multiple first glass columns (62) are arranged on the same circumferential surface of the integral sleeve (6).

9. A carbon dioxide laser tube according to any one of claims 2 to 8, characterized in that: The second sliding support mechanism comprises an external sleeve (8) and a second sliding support member; the external sleeve (8), the second sliding support member and the integral sleeve (6) are sequentially sleeved and abutted from the outside to the inside, and the external sleeve (8) is connected to the gas storage pipe (1); The second sliding support member is slidably matched with the integral sleeve (6) and / or the external sleeve (8) along the axial direction.

10. The carbon dioxide laser tube according to claim 9, characterized in that: The second sliding support member comprises an inner sleeve (7) and at least one second support tube (52), and the outer sleeve (8), the second support tube (52), the inner sleeve (7) and the integral sleeve (6) are sequentially sleeved and abutted from the outside to the inside; The inner sleeve (7) and the integral sleeve (6) are slidably matched along the axial direction.

11. The carbon dioxide laser tube according to claim 10, characterized in that: The length of the inner sleeve (7) is greater than or equal to 2.5 times the diameter of the inner sleeve (7).

12. The carbon dioxide laser tube according to claim 9, characterized in that: The outer sleeve (8) is a glass tube, and the outer sleeve (8) and the gas storage tube (1) are integrally connected via a second glass column (81).

13. The carbon dioxide laser tube according to claim 12, characterized in that: There are multiple second glass columns (81), and the multiple second glass columns (81) are arranged on the same circumferential surface of the outer sleeve (8).

Images