Carbon dioxide laser tube with water-cooled tube supporting column

Abstract

The utility model discloses a carbon dioxide laser tube with a water-cooled tube support column, which comprises a gas storage tube, a water-cooled tube and a discharge tube which are sequentially sleeved from outside to inside, a positive electrode and a negative electrode are respectively arranged at two ends of the discharge tube, a spiral tube is arranged outside the negative electrode in a surrounding manner, and the spiral tube is connected with the water-cooled tube support column. The two ends of the spiral pipe are communicated with the water cooling pipe and the water inlet pipe respectively, and the two ends of the supporting column are connected with the gas storage pipe and the water cooling pipe in a burning and casting mode respectively. According to the utility model, on the basis of providing deformation and performing heat insulation through the spiral tube, the support column rigid structure is additionally arranged, so that a more stable support effect can be provided when the laser tube is processed, and the consistency of the central axis of the discharge tube and the water cooling tube and the central axis of the laser tube is improved. In the movement process of the laser tube, the stability of the laser tube is improved, the deviation phenomenon of the water cooling tube and the discharge tube caused by the shaking of the spiral tube is reduced, and the reduction of the output power and the instability of output light spots during the movement of the laser tube are reduced.

Description

Technical Field

[0001] The utility model relates to the field of laser tubes, in particular to a carbon dioxide laser tube with a water-cooling tube supporting column. 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] When the laser tube is working, both the discharge tube and the cathode electrode have relatively high temperatures. Although a water-cooling tube is installed outside the discharge tube to cool the discharge tube to ensure the normal operation of the laser tube, the water-cooling tube is installed outside the discharge tube, so it cannot achieve a good cooling effect on the cathode electrode installed at the end of the discharge tube. The cathode electrode continuously radiates heat to the gas storage tube, causing the temperature of the local position corresponding to the cathode electrode on the gas storage tube to rise, resulting in deformation of the gas storage tube. Since the reflection window and the output window are respectively arranged at both ends of the gas storage tube, when the gas storage tube is deformed, the alignment accuracy of the reflection window and the output window decreases, which directly reduces the stability of the quality of the laser beam output by the laser tube.

[0004] Therefore, in order to solve the above problems, a carbon dioxide laser tube that can cool the cathode electrode well and improve the stability of laser beam output has emerged, such as a high-stability carbon dioxide laser tube with a cathode electrode heat insulation device claimed for protection by publication number CN203850611U. The carbon dioxide laser tube surrounds the outside of the cathode electrode with a spiral tube to prevent the heat of the cathode electrode from radiating to the gas storage tube, while its own temperature will also rise and it will also deform. The spiral tube itself is long and has a certain elasticity, so the heat insulation device is set as a spiral tube, so that when the heat insulation device is deformed by heat, it can have enough deformation, reduce the pulling on the water cooling tube, and ensure the stability of the laser beam output by the laser tube.

[0005] However, due to the elasticity of the spiral tube itself, the water cooling tube is prone to displacement during the laser tube processing, resulting in a decrease in the laser tube output power and a deterioration in the spot pattern. In addition, since the laser tube sometimes moves with the equipment during use, the elasticity of the spiral tube can easily make the connection between the water cooling tube and the external gas storage tube unstable, resulting in a slight deformation of the discharge tube, thereby reducing the laser tube output power and deteriorating the spot pattern. 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 with a water-cooling tube support column.

[0007] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0008] A carbon dioxide laser tube with a water-cooling tube support column comprises a gas storage tube, a water-cooling tube and a discharge tube which are sequentially sleeved from the outside to the inside, an anode electrode and a cathode electrode are respectively arranged at two ends of the discharge tube, a spiral tube is arranged around the cathode electrode, and two ends of the spiral tube are respectively connected to the water-cooling tube and a water inlet pipe, and also comprises a support column, and two ends of the support column are respectively cast and connected to the gas storage tube and the water-cooling tube.

[0009] The utility model adds a support column, which is directly cast together with the gas storage pipe and the water cooling pipe of the laser tube during the laser tube processing, and is fixedly connected with the gas storage pipe and the water cooling pipe of the laser tube.

[0010] The utility model provides deformation and heat insulation through the spiral tube, and adds a rigid structure of the support column. When the laser tube is processed, it can provide a more stable support effect and improve the consistency of the central axis of the discharge tube, the water cooling tube and the central axis of the laser tube. During the movement of the laser tube, the stability of the laser tube is improved, the deviation of the water cooling tube and the discharge tube caused by the shaking of the spiral tube is reduced, and the output power reduction and the unstable output light spot of the laser tube during movement are reduced.

[0011] As a preferred solution of the utility model, the support column includes a first support column, and the distance between the first support column and the spiral tube is 5cm-10cm.

[0012] The support column can be arranged as close to the spiral tube as possible, so that on the basis of allowing the spiral tube to have a certain deformation, the deformation of the spiral tube can be controlled by the support column, thereby reducing the influence of the deformation of the spiral tube on the water-cooling tube and the middle main body of the discharge tube, and reducing the output power reduction and output spot instability of the laser tube during movement.

[0013] As a preferred solution of the present invention, the first support column includes at least two first support column units, and all the first support column units are arranged on the same circumferential surface of the water cooling tube, so as to improve the stability and reliability of the support.

[0014] As a preferred solution of the utility model, the first support column includes 2-4 first support column units, and all the first support column units are evenly spaced and arranged along the same circumferential surface of the water cooling tube, so as to improve the stability and reliability of the support.

[0015] As a preferred solution of the utility model, the support column includes a second support column, and the second support column is arranged closer to the anode electrode than the first support column. By providing the second support column, the rigid support effect of the support column can be further improved, the deviation of the water cooling tube and the discharge tube caused by the shaking of the spiral tube can be reduced, and the output power reduction and output spot instability of the laser tube during movement can be reduced.

[0016] As a preferred solution of the present invention, the second support column includes at least two second support column units, and all the second support column units are arranged on the same circumferential surface of the water cooling tube, so as to improve the stability and reliability of the support.

[0017] As a preferred solution of the utility model, the second support column includes 2-4 second support column units, and all the second support column units are evenly spaced along the same circumferential surface of the water cooling tube, so as to improve the stability and reliability of the support.

[0018] As a preferred solution of the utility model, the support columns are arranged in 2-5 groups at intervals along the length direction of the water cooling tube. By setting multiple groups of support columns, the rigid support effect of the support columns can be further improved, the deviation of the water cooling tube and the discharge tube caused by the shaking of the spiral tube can be reduced, and the output power reduction and output spot instability of the laser tube during movement can be reduced.

[0019] As a preferred solution of the utility model, the two groups of support columns are respectively located at the two ends of the length direction of the water-cooling pipe.

[0020] The utility model also discloses a method for processing a carbon dioxide laser tube with a water-cooling tube support column, wherein the gas storage tube and the water-cooling tube are first connected by casting through the support column, and then the spiral tube is arranged around it.

[0021] The processing method described in the utility model first uses a support column to burn and connect the gas storage tube and the water cooling tube, and then surrounds the spiral tube. In this way, a more stable support effect can be provided during laser tube processing, the processing accuracy can be improved, and the consistency between the central axis of the discharge tube, the water cooling tube and the central axis of the laser tube can be improved.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The laser tube described in the utility model is provided with a rigid structure of a support column on the basis of providing deformation and heat insulation through a spiral tube, which can provide a more stable support effect during laser tube processing, improve the consistency of the central axis of the discharge tube, the water cooling tube and the central axis of the laser tube. During the movement of the laser tube, the stability of the laser tube is improved, the deviation of the water cooling tube and the discharge tube caused by the shaking of the spiral tube is reduced, and the output power reduction and the unstable output spot of the laser tube during movement are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a schematic structural diagram of a carbon dioxide laser tube with a water-cooled tube support column.

[0025] Figure 2 It is a partial enlarged schematic diagram of the support column structure described in the present invention.

[0026] Figure 3 It is a cross-sectional view near the support column structure described in the utility model.

[0027] Markings in the figure: 1-gas storage pipe, 2-water cooling pipe, 3-discharge tube, 4-positive electrode, 5-negative electrode, 6-water inlet pipe, 7-water outlet pipe, 8-spiral tube, 9-reflection window, 10-output window, 11-support column, 111-first support column, 1111-first support column unit, 112-second support column, 1121-second support column unit. 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] Example 1

[0035] like Figure 1As shown, a carbon dioxide laser tube with a water-cooling tube support column includes 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 4 and a cathode electrode 5 are respectively arranged at both ends of the discharge tube 3, and a reflection window 9 and an output window 10 are respectively arranged at both ends of the gas storage tube 1, and the gas storage tube 1 is provided with a water inlet pipe 6 and a water outlet pipe 7 connected to the water-cooling tube 2. When a high voltage is applied to the electrodes, a glow discharge is generated in the discharge tube 3, which is reflected by the reflection lens and the output lens, so that photons repeatedly oscillate in the discharge tube 3 to form a laser beam, which is emitted from the output lens to obtain the final laser beam.

[0036] The cathode electrode 5 is surrounded by a spiral tube 8, and the two ends of the spiral tube 8 are respectively connected to the water cooling tube 2 and the water inlet pipe 6. By sheathing the spiral tube 8 on the cathode electrode 5, the heat radiated from the cathode electrode 5 to the gas storage tube 1 is reduced, the thermal deformation of the gas storage tube 1 is reduced, and the influence of the temperature change of the cathode electrode 5 on the alignment accuracy of the reflection window 9 and the output window 10 is reduced, thereby improving the stability of the laser beam output by the laser tube.

[0037] Specifically, the heat insulation device is set as a spiral tube 8, and the spiral tube 8 surrounds the outside of the cathode electrode 5. While preventing the heat of the cathode electrode 5 from radiating to the gas storage tube 1, its own temperature will also increase and it will also deform. The spiral tube 8 itself is relatively long and has a certain elasticity. Therefore, the heat insulation device is set as a spiral tube 8, so that when the heat insulation device is deformed by heat, it can have sufficient deformation, reduce the pulling on the water-cooling tube 2, and ensure the stability of the laser beam output by the laser tube.

[0038] The spiral tube 8 is connected to the water cooling tube 2. The spiral tube 8 is connected to the water cooling tube 2, and the cooling water in the water cooling tube 2 can enter the spiral tube 8, so that the spiral tube 8 not only prevents the heat on the cathode electrode 5 from being transferred to the gas storage tube 1, but also the heat transferred to the spiral tube 8 can be taken away by the cooling water, so it also cools the cathode electrode 5, further avoiding the temperature of the cathode electrode 5 from being transferred to the gas storage tube 1, and improving the stability of the laser beam output by the laser tube.

[0039] In one or more embodiments, one end of the water inlet pipe 6 and the water outlet pipe 7 near the cathode electrode 5 passes through the gas storage pipe 1 and is connected to an external water source, and the other end is connected to one end of the spiral pipe 8, and the other end of the spiral pipe 8 is connected to the water cooling pipe 2. The spiral pipe 8 is connected in series in the water path of the water inlet pipe 6, the water cooling pipe 2 and the water outlet pipe 7, so that the cooling water inside the spiral pipe 8 keeps flowing, thereby improving the heat insulation effect and cooling effect of the spiral pipe 8.

[0040] In one or more embodiments, the spiral tube 8 is separated from the cathode electrode 5. When the laser tube is working, if the electrode temperature is too low, it will affect the power of the laser beam output by the laser tube. Therefore, the spiral tube 8 is separated from the cathode electrode 5 by a suitable distance, so that the spiral tube 8 can play the role of heat insulation and cooling the cathode electrode 5 while not causing the temperature of the cathode electrode 5 to be too low to affect the output quality of the laser tube.

[0041] In one or more embodiments, the spiral tube 8 completely covers the cathode electrode 5. The spiral tube 8 completely covers the cathode electrode 5 and is separated from the cathode electrode 5 by a suitable distance, so that the spiral tube 8 can effectively block the heat radiated by the cathode electrode 5 to the gas storage tube 1, and also allows the spiral tube 8 to evenly cool the cathode electrode 5 to avoid local overheating on the cathode electrode 5.

[0042] A support column 11 is further provided between the gas storage pipe 1 and the water cooling pipe 2 , and both ends of the support column 11 are respectively connected to the gas storage pipe 1 and the water cooling pipe 2 by casting.

[0043] The utility model provides a support column 11 between the gas storage tube 1 and the water cooling tube 2, and the support column 11 fixedly connects the gas storage tube 1 and the water cooling tube 2 of the laser tube. Due to the rigid structure of the support column 11, a more stable support effect can be provided during laser tube processing, and the consistency of the central axis of the discharge tube 3, the water cooling tube 2 and the central axis of the laser tube is improved.

[0044] At the same time, in the carbon dioxide laser tube described in the utility model, the water cooling tube 2 at the cathode electrode 5 is connected to the water inlet pipe 6 through the spiral tube 8. Since the spiral tube 8 can allow a large deformation, the water cooling tube 2 at the cathode electrode 5 and the gas storage tube 1 are equivalent to a flexible connection. Therefore, when the laser tube is impacted during transportation, the spiral tube 8 can provide a certain deformation buffer space to avoid damage to the water cooling tube 2 and the discharge tube 3 due to excessive bending. During the use of the carbon dioxide laser tube, when the elongation of the water cooling tube 2 and the gas storage tube 1 in the length direction is inconsistent, the spiral tube 8 can still provide a certain deformation buffer space to reduce the pulling strength between the water cooling tube 2 and the gas storage tube 1, thereby improving the stability of the laser beam output by the laser tube and avoiding the situation where the water cooling tube 2 or the gas storage tube 1 is torn. While allowing the spiral tube 8 to deform to a certain extent, the utility model controls the deformation range of the spiral tube 8 by adding a support column 11, and controls the deformation of the spiral tube 8 within a certain range, so that the deformation of the spiral tube 8 is unlikely to affect the middle main body of the water-cooling tube 2 and the discharge tube 3, thereby improving the stability of the laser tube, reducing the deviation of the water-cooling tube 2 and the discharge tube 3 caused by the shaking of the spiral tube 8, and reducing the output power reduction and output spot instability of the laser tube when it is moving.

[0045] In one or more embodiments, the support column 11 includes a first support column 111, and the first support column 111 is arranged close to the spiral tube 8. Preferably, the distance between the first support column 111 and the spiral tube 8 can be 5 cm-10 cm. The first support column 111 can be arranged as close to the spiral tube 8 as possible, so that on the basis of allowing the spiral tube 8 to have a certain deformation, the deformation of the spiral tube 8 is controlled by the first support column 111, reducing the influence of the deformation of the spiral tube 8 on the water-cooling tube 2 and the middle main body of the discharge tube 3, and reducing the output power reduction and output spot instability of the laser tube when it moves.

[0046] Further preferably, the first support column 111 includes at least two first support column units 1111, and all the first support column units 1111 are arranged on the same circumferential surface of the water-cooling tube 2. That is, at least two first support column units 1111, such as 2, 3, 4, 5, etc., are arranged on a cross section (circumferential surface) of the water-cooling tube 2 close to the spiral tube 8. Generally, the number of the first support column units 1111 on a cross section (circumferential surface) can be 2-4, and all the first support column units 1111 are evenly spaced along the same circumferential surface of the water-cooling tube 2. Thereby, the stability and reliability of the support can be improved.

[0047] like Figure 2-3 As shown, two first support column units 1111 are arranged on a cross section (circumferential surface), and the angle between the two first support column units 1111 is 180 degrees, that is, all the first support column units 1111 are evenly spaced along the same circumferential surface of the water-cooling tube 2.

[0048] In one or more embodiments, the support column 11 includes a second support column 112, and the second support column 112 is arranged closer to the anode electrode 4 than the first support column 111, that is, the second support column 112 is often arranged on a side close to the anode electrode 4. In this way, by simultaneously arranging the first support column 111 and the second support column 112, a plurality of support points can be formed along the length direction of the water-cooling tube 2, which can further improve the rigid support effect of the support column 11, reduce the deviation of the water-cooling tube 2 and the discharge tube 3 caused by the shaking of the spiral tube 8, and reduce the output power reduction and output spot instability of the laser tube when it moves.

[0049] Further preferably, the second support column 112 includes at least two second support column units 1121, and all the second support column units 1121 are arranged on the same circumferential surface of the water-cooling tube 2. That is, at least two second support column units 1121, such as 2, 3, 4, 5, etc., are arranged on a cross section (circumferential surface) of the water-cooling tube 2 close to the anode electrode 4. Generally, the number of the second support column units 1121 on a cross section (circumferential surface) can be 2-4, and all the second support column units 1121 are evenly spaced along the same circumferential surface of the water-cooling tube 2. Thereby, the stability and reliability of the support can be improved.

[0050] like Figure 2-3 As shown, two second support column units 1121 are arranged on a cross section (circumferential surface), and the angle between the two second support column units 1121 is 180 degrees, that is, all the second support column units 1121 are evenly spaced along the same circumferential surface of the water-cooling tube 2.

[0051] In one or several embodiments, the support column 11 may further include a third support column, a fourth support column..., that is, the support columns 11 may be arranged in 2-5 groups at intervals along the length direction of the water-cooling tube 2. In this way, the stability and reliability of the support of the support columns 11 can be further improved, and the output power reduction and output spot instability of the laser tube during movement can be reduced.

[0052] Example 2

[0053] A method for processing a carbon dioxide laser tube with a water-cooled tube support column, used for processing a carbon dioxide laser tube with a water-cooled tube support column as described in Example 1, comprises the following steps:

[0054] First, the gas storage pipe 1 and the water cooling pipe 2 are connected by casting through the support column 11, and then the spiral pipe 8 is arranged around it.

[0055] The processing method described in the present invention first uses the support column 11 to cast and connect the gas storage tube 1 and the water cooling tube 2, and then surrounds the spiral tube 8. In this way, a more stable support effect can be provided during laser tube processing, the processing accuracy can be improved, and the consistency between the central axis of the discharge tube 3 and the water cooling tube 2 and the central axis of the laser tube can be improved.

[0056] 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 with a water-cooling tube support column, comprising 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 two ends of the discharge tube (3) are respectively provided with an anode electrode (4) and a cathode electrode (5), and the cathode electrode (5) is surrounded by a spiral tube (8), and the two ends of the spiral tube (8) are respectively connected to the water-cooling tube (2) and the water inlet pipe (6), characterized in that: It also comprises a support column (11), the two ends of which are respectively connected to the gas storage pipe (1) and the water cooling pipe (2) by casting.

2. The carbon dioxide laser tube with a water-cooled tube support column according to claim 1, characterized in that: The support column (11) comprises a first support column (111), and the distance between the first support column (111) and the spiral tube (8) is 5 cm-10 cm.

3. The carbon dioxide laser tube with a water-cooled tube support column according to claim 2, characterized in that: The first support column (111) comprises at least two first support column units (1111), and all the first support column units (1111) are arranged on the same circumferential surface of the water-cooling pipe (2).

4. The carbon dioxide laser tube with a water-cooled tube support column according to claim 3, characterized in that: The first support column (111) comprises 2-4 first support column units (1111), and all the first support column units (1111) are evenly spaced and arranged along the same circumferential surface of the water-cooling pipe (2).

5. The carbon dioxide laser tube with a water-cooled tube support column according to claim 2, characterized in that: The support column (11) comprises a second support column (112), and the second support column (112) is arranged closer to the anode electrode (4) than the first support column (111).

6. The carbon dioxide laser tube with a water-cooled tube support column according to claim 5, characterized in that: The second support column (112) comprises at least two second support column units (1121), and all the second support column units (1121) are arranged on the same circumferential surface of the water-cooling pipe (2).

7. The carbon dioxide laser tube with a water-cooled tube support column according to claim 6, characterized in that: The second support column (112) comprises 2-4 second support column units (1121), and all the second support column units (1121) are evenly spaced and arranged along the same circumferential surface of the water-cooling pipe (2).

8. A carbon dioxide laser tube with a water-cooled tube support column according to any one of claims 1 to 7, characterized in that: The support columns (11) are arranged in 2 to 5 groups at intervals along the length direction of the water cooling tube (2).

9. The carbon dioxide laser tube with a water-cooled tube support column according to claim 8, characterized in that: The two groups of support columns (11) are respectively located at two ends of the water cooling pipe (2) in the length direction.

Images