Shielding device for a cathode tube and a carbon dioxide laser tube

Abstract

The utility model relates to the field of laser tube, especially a shielding device of cathode tube and a carbon dioxide laser tube, the shielding device includes insulating cover and insulating head, the insulating cover includes the first sleeve pipe and the joint part of interconnection, the joint part is used for clamping the first end of cathode tube, the one end inside of first sleeve pipe away from the joint part is equipped with the insulating head, and the insulating head is used for blocking the second end of cathode tube, in use, the first sleeve pipe is set on cathode tube, and makes the joint part clamping the first end of cathode tube, then installs the insulating head in the one end inside of first sleeve pipe away from the joint part, blocks the second end of cathode tube through the insulating head, thereby shielding the both ends of cathode tube, because the both ends of cathode tube are blocked by the joint part and the insulating head respectively, avoids the formation of sharp end discharge at its port when cathode tube discharges, makes the cathode tube in stable discharge, also avoids the pipeline of carbon dioxide laser to be broken down, improves the service life of carbon dioxide laser.

Description

Technical Field

[0001] This utility model relates to the field of laser tubes, and in particular to a shielding device for a cathode tube and a carbon dioxide laser tube. Background Technology

[0002] Current carbon dioxide lasers typically include a discharge tube, a water-cooling tube surrounding the discharge tube, a gas storage tube surrounding the water-cooling tube, cathode and anode electrodes located at both ends of the discharge tube, and output and reflection windows located at both ends of the gas storage tube. The reflection window includes a reflecting mirror and a reflecting mirror cooling device, and the output window includes an output mirror and an output mirror cooling device. 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. After being reflected by the reflecting mirror and the output mirror, a laser beam is formed and emitted from the output mirror to obtain the final laser beam. The discharge tube is usually made of glass or quartz, and the electrodes are generally hollow cylindrical structures.

[0003] When the laser is working, the cathode discharges. Since the two ends of the cathode are sharp, sharp discharges are easily formed at the cathode ports during the discharge process, which can easily damage the cathode ports. Furthermore, the sharp discharges of the cathode can also easily break down the tube of the carbon dioxide laser, seriously affecting the lifespan of the laser. Utility Model Content

[0004] The purpose of this invention is to address the problem in the prior art that the cathode electrode is prone to forming a tip discharge at the port, which leads to easy damage at the cathode electrode port and the tip discharge of the cathode electrode can also easily break down the tube of the carbon dioxide laser, seriously affecting the service life of the laser. This invention provides a shielding device for the cathode tube and a carbon dioxide laser tube.

[0005] In a first aspect, this application provides a shielding device for a cathode tube, including an insulating cover and an insulating head, the insulating cover including a first sleeve and a snap-fit ​​part connected to each other, the snap-fit ​​part being used to snap-fit ​​a first end of the cathode tube;

[0006] An insulating head is provided inside the end of the first sleeve away from the snap-fit ​​part, and the insulating head is used to seal the second end of the cathode tube.

[0007] In use, the first sleeve is fitted onto the cathode tube, and the snap-fit ​​part snaps into the first end of the cathode tube. Then, an insulating head is installed inside the end of the first sleeve away from the snap-fit ​​part. The insulating head is used to seal the second end of the cathode tube, thereby blocking both ends of the cathode tube. Since both ends of the cathode tube are blocked by the snap-fit ​​part and the insulating head respectively, it is prevented that a point discharge will form at its port when the cathode tube discharges, so that the cathode tube can discharge stably, avoiding damage to the cathode tube. It also prevents the tube of the carbon dioxide laser from being punctured, and improves the service life of the carbon dioxide laser.

[0008] Preferably, the snap-fit ​​portion is arranged circumferentially around the inner wall of the first sleeve, and an annular snap-fit ​​groove is formed between the snap-fit ​​portion and the inner wall of the first sleeve, and the annular snap-fit ​​groove snaps onto the first end of the cathode tube.

[0009] The first end of the cathode tube is secured by a ring-shaped slot, thereby shielding and blocking the first end of the cathode tube to prevent tip discharge from occurring at the first end port.

[0010] Preferably, the snap-fit ​​portion includes an annular base plate and a cylinder, the outer ring of the annular base plate is connected to the inner wall of the first sleeve, the inner ring of the annular base plate is connected to the cylinder, and the annular snap-fit ​​groove is formed between the annular base plate, the cylinder and the inner wall of the first sleeve.

[0011] The annular base plate and cylinder shield the first end of the cathode tube, thus isolating it and preventing tip discharge if the first end of the cathode tube comes into contact with the outside. Simultaneously, the annular base plate and cylinder also limit the cathode tube, preventing it from wobbling and ensuring a stable connection between the cathode tube and the first sleeve.

[0012] Preferably, the annular base plate, the cylinder, and the first sleeve are integrally formed.

[0013] Preferably, the annular base plate, the cylinder, and the first sleeve are coaxially arranged.

[0014] Preferably, the cylinder extends into the interior of the first sleeve.

[0015] Preferably, one end of the insulating head extends inside the cathode tube, and the other end of the insulating head covers the second end of the cathode tube.

[0016] By covering the second end of the cathode tube with an insulating head, the second end of the cathode tube is shielded and blocked, thus preventing tip discharge at the second end of the cathode tube. This allows the cathode tube to discharge stably and improves its service life.

[0017] Preferably, the insulating head includes a second sleeve and an annular baffle, the annular baffle being arranged circumferentially along the outer wall of the second sleeve;

[0018] The second sleeve extends into the interior of the cathode tube at the end furthest from the annular baffle, and the annular baffle abuts against the second end of the cathode tube.

[0019] The second end of the cathode tube is blocked by an annular baffle that abuts against it, thus preventing tip discharge from occurring after the second end of the cathode tube comes into contact with the outside.

[0020] Meanwhile, the second sleeve is inserted into the cathode tube to act as a guide, ensuring the coaxiality of the insulating head and the cathode tube and improving assembly accuracy.

[0021] Preferably, the second sleeve and the annular baffle are integrally formed.

[0022] In a second aspect, this application provides a carbon dioxide laser tube, comprising a discharge tube, a water-cooling tube, and a gas storage tube arranged sequentially from the inside out, wherein one end of the discharge tube is provided with a mounting base;

[0023] It also includes a cathode tube and the shielding device described in this application, wherein the first sleeve is fitted onto the cathode tube, the snap-fit ​​part snaps onto the first end of the cathode tube, and the insulating head blocks the second end of the cathode tube;

[0024] The end of the first sleeve away from the insulating head is fitted onto the mounting base.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] 1. The shielding device of this application includes an insulating cover and an insulating head. In use, a first sleeve is fitted onto the cathode tube, and the snap-fit ​​part snaps into the first end of the cathode tube. Then, an insulating head is installed inside the end of the first sleeve away from the snap-fit ​​part. The insulating head is used to seal the second end of the cathode tube, thereby blocking both ends of the cathode tube. Since both ends of the cathode tube are blocked by the snap-fit ​​part and the insulating head respectively, it avoids the formation of a tip discharge at the port of the cathode tube during discharge, so that the cathode tube can discharge stably, avoiding damage to the cathode tube. It also avoids the tube of the carbon dioxide laser being punctured, and improves the service life of the carbon dioxide laser.

[0027] 2. The carbon dioxide laser tube of this application uses an insulating cover and an insulating head to block the two ends of the cathode tube, thereby preventing the cathode tube from discharging to both ends during discharge and causing unstable discharge of the cathode tube, thus improving the service life of the carbon dioxide laser. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the shielding device structure of this application.

[0029] Figure 2 This is a schematic cross-sectional view of the insulating cover of this application.

[0030] Figure 3 This is a front view of the insulator head.

[0031] Figure 4 This is a three-dimensional schematic diagram of the shielding device of this application.

[0032] Figure 5 yes Figure 1 A magnified view of part A.

[0033] Figure 6 yes Figure 2 A magnified view of section B.

[0034] Figure 7 This is a schematic diagram of the cathode tube installation.

[0035] Figure 8 This is a schematic diagram of the carbon dioxide laser tube of this application.

[0036] Marked in the image:

[0037] 1-Insulating cover,

[0038] 11-First casing,

[0039] 12-Snap-fit ​​part, 121-Annular base plate, 122-Cylinder,

[0040] 13- Annular slot,

[0041] 2-Insulating head,

[0042] 21-Second sleeve,

[0043] 22- Annular baffle,

[0044] 3-Cathode tube,

[0045] 4-Discharge tube,

[0046] 41-Mounting base,

[0047] 5-Water cooling pipe,

[0048] 6-Gas storage pipe. Detailed Implementation

[0049] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0050] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0051] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0052] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0053] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0054] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0055] Example 1

[0056] like Figures 1-6 As shown, the shielding device for a cathode tube described in this embodiment includes an insulating cover 1 and an insulating head 2. The insulating cover 1 includes a first sleeve 11 and a snap-fit ​​part 12 connected to each other. The snap-fit ​​part 12 is used to snap the first end of the cathode tube 3.

[0057] An insulating head 2 is provided inside the end of the first sleeve 11 away from the snap-fit ​​part 12. The insulating head 2 is used to seal the second end of the cathode tube 3.

[0058] The shielding device for the cathode tube in this embodiment includes an insulating cover 1 and an insulating head 2. In use, a first sleeve 11 is fitted onto the cathode tube 3, and a snap-fit ​​part 12 snaps into the first end of the cathode tube 3. Then, an insulating head 2 is installed inside the end of the first sleeve 11 away from the snap-fit ​​part 12. The insulating head 2 is used to seal the second end of the cathode tube 3, thereby blocking both ends of the cathode tube 3. Since both ends of the cathode tube 3 are blocked by the snap-fit ​​part 12 and the insulating head 2 respectively, it is prevented that a tip discharge is formed at the port of the cathode tube 3 when it discharges, so that the cathode tube 3 can discharge stably, avoiding damage to the cathode tube 3. It also prevents the pipe of the carbon dioxide laser from being punctured, and improves the service life of the carbon dioxide laser.

[0059] In one or more embodiments, such as Figure 2 , Figure 4 As shown, the snap-fit ​​part 12 is arranged in a ring around the inner wall of the first sleeve 11, and an annular snap-fit ​​groove 13 is formed between the snap-fit ​​part 12 and the inner wall of the first sleeve 11. The annular snap-fit ​​groove 13 snaps into the first end of the cathode tube 3.

[0060] The first end of the cathode tube 3 is locked in place by the annular groove 13 formed between the locking part 12 and the first sleeve 11, thereby blocking and preventing the first end of the cathode tube 3 from having a tip discharge.

[0061] In optional implementations, such as Figure 6As shown, the snap-fit ​​part 12 includes an annular base plate 121 and a cylinder 122. The outer ring edge of the annular base plate 121 is connected to the inner wall of the first sleeve 11, and one end of the cylinder 122 is connected to the inner ring edge of the annular base plate 121. An annular snap-fit ​​groove 13 is formed between the cylinder 122, the annular base plate 121 and the inner wall of the first sleeve 11.

[0062] The first end of the cathode tube 3 is blocked by the annular base plate 121 and the cylinder 122, thereby preventing the first end of the cathode tube 3 from coming into contact with the outside and causing tip discharge.

[0063] At the same time, the annular base plate 121 and the cylinder 122 also limit the cathode tube 3, preventing the cathode tube 3 from shaking and ensuring that the cathode tube 3 is firmly connected to the first sleeve 11.

[0064] The outer diameter of the cylinder 122 is equal to the inner ring diameter of the annular base plate 121, and one end of the cylinder 122 is fixedly connected to the inner ring of the annular base plate 121.

[0065] Furthermore, such as Figure 2 , Figure 4 As shown, the annular base plate 121, the cylinder 122 and the first sleeve 11 are integrally formed.

[0066] Furthermore, such as Figure 2 , Figure 4 As shown, the annular base plate 121, the cylinder 122, and the first sleeve 11 are coaxially arranged.

[0067] Furthermore, such as Figure 4 As shown, the cylinder 122 extends into the interior of the first sleeve 11.

[0068] In one or more embodiments, such as Figure 1 As shown, one end of the insulating head 2 extends into the cathode tube 3, and the other end of the insulating head 2 covers the second end of the cathode tube 3.

[0069] The second end of the cathode tube 3 is covered by the insulating head 2, thereby blocking and preventing the second end of the cathode tube 3 from experiencing tip discharge. This allows the cathode tube 3 to discharge stably and improves its service life.

[0070] In optional implementations, such as Figure 3 , Figure 4 As shown, the insulating head 2 includes a second sleeve 21 and an annular baffle 22, with the annular baffle 22 arranged circumferentially along the outer wall of the second sleeve 21;

[0071] like Figure 5 As shown, the end of the second sleeve 21 away from the annular baffle 22 extends into the interior of the cathode tube 3, and the annular baffle 22 abuts against the second end of the cathode tube 3.

[0072] The second end of the cathode tube 3 is blocked by the annular baffle 22 abutting against it, thereby preventing the second end of the cathode tube 3 from coming into contact with the outside and causing a tip discharge.

[0073] Meanwhile, the second sleeve 21 is inserted into the cathode tube 3 to serve as a guide, ensuring the coaxiality of the insulating head 2 and the cathode tube 3 and improving assembly accuracy.

[0074] Furthermore, the outer ring edge of the annular baffle 22 abuts against the inner wall of the first sleeve 11, so that the annular baffle 22 and the first sleeve 11 fit tightly together.

[0075] Furthermore, the outer wall of the second sleeve 21 abuts against the inner wall of the cathode tube 3 to ensure a tight fit between the two.

[0076] Furthermore, the second sleeve 21 and the annular baffle 22 are integrally formed.

[0077] In an optional embodiment, the insulating cover 1 is made of an insulating material, including ceramics, glass, etc.

[0078] In an optional embodiment, the insulating head 2 is made of an insulating material, including ceramics, glass, etc.

[0079] Example 2

[0080] like Figure 1 , Figure 7 , Figure 8 As shown, the carbon dioxide laser tube disclosed in this embodiment includes a discharge tube 4, a water cooling tube 5 and a gas storage tube 6 arranged sequentially from the inside to the outside, and a mounting base 41 is provided at one end of the discharge tube 4;

[0081] It also includes the cathode tube 3 and the shielding device described in Example 1. The first sleeve 11 is sleeved on the cathode tube 3, the snap-fit ​​part 12 snaps onto the first end of the cathode tube 3, and the insulating head 2 blocks the second end of the cathode tube 3.

[0082] The end of the first sleeve 11 furthest from the insulating head 2 is fitted onto the mounting base 41.

[0083] like Figure 7 As shown, the cathode tube 3 is placed inside the shielding device, and the cathode tube 3 is shielded by the insulating cover 1 and the insulating head 2. Then, the shielding device is put on the mounting base 41 of the discharge tube 4 to complete the installation of the cathode tube 3.

[0084] In this embodiment, the mounting base 41 is a circular tube structure. The end of the first sleeve 11 away from the insulating head 2 is a snap-fit ​​part 12. When the first sleeve 11 is fitted onto the mounting base 41, that is, the cylinder 122 of the snap-fit ​​part 12 is fitted onto the mounting base 41. Furthermore, the inner wall of the cylinder 122 is clearance-fitted with the outer wall of the mounting base 41.

[0085] The carbon dioxide laser tube described in this embodiment uses an insulating cover 1 and an insulating head 2 to block the two ends of the cathode tube 3, preventing the cathode tube 3 from discharging to both ends during discharge, which would cause unstable discharge of the cathode tube 3 and improve the service life of the carbon dioxide laser.

[0086] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shielding device for a cathode tube, characterized in that, It includes an insulating cover (1) and an insulating head (2). The insulating cover (1) includes a first sleeve (11) and a snap-fit ​​part (12) connected to each other. The snap-fit ​​part (12) is used to snap the first end of the cathode tube (3). An insulating head (2) is provided inside the end of the first sleeve (11) away from the snap-fit ​​part (12), and the insulating head (2) is used to block the second end of the cathode tube (3).

2. The shielding device for a cathode tube according to claim 1, characterized in that, The snap-fit ​​part (12) is arranged circumferentially around the inner wall of the first sleeve (11), and an annular snap-fit ​​groove (13) is formed between the snap-fit ​​part (12) and the inner wall of the first sleeve (11). The annular snap-fit ​​groove (13) snaps into the first end of the cathode tube (3).

3. The shielding device for a cathode tube according to claim 2, characterized in that, The snap-fit ​​part (12) includes an annular base plate (121) and a cylinder (122). The outer ring of the annular base plate (121) is connected to the inner wall of the first sleeve (11), and the inner ring of the annular base plate (121) is connected to the cylinder (122). The annular groove (13) is formed between the annular base plate (121), the cylinder (122) and the inner wall of the first sleeve (11).

4. The shielding device for a cathode tube according to claim 3, characterized in that, The annular base plate (121), the cylinder (122), and the first sleeve (11) are integrally formed.

5. A shielding device for a cathode tube according to claim 3, characterized in that, The annular base plate (121), the cylinder (122), and the first sleeve (11) are coaxially arranged.

6. A shielding device for a cathode tube according to claim 3, characterized in that, The cylinder (122) extends into the interior of the first sleeve (11).

7. A shielding device for a cathode tube according to claim 1, characterized in that, One end of the insulating head (2) extends into the cathode tube (3), and the other end of the insulating head (2) covers the second end of the cathode tube (3).

8. A shielding device for a cathode tube according to claim 7, characterized in that, The insulating head (2) includes a second sleeve (21) and an annular baffle (22), the annular baffle (22) being arranged circumferentially along the outer wall of the second sleeve (21); The second sleeve (21) extends into the interior of the cathode tube (3) at one end away from the annular baffle (22), and the annular baffle (22) abuts against the second end of the cathode tube (3).

9. A shielding device for a cathode tube according to claim 8, characterized in that, The second sleeve (21) and the annular baffle (22) are integrally formed.

10. A carbon dioxide laser tube, comprising a discharge tube (4), a water-cooling tube (5), and a gas storage tube (6) arranged sequentially from the inside out, characterized in that, The discharge tube (4) is provided with a mounting base (41) at one end; It also includes a cathode tube (3) and a shielding device as described in any one of claims 1-9, wherein the first sleeve (11) is sleeved on the cathode tube (3), the snap-fit ​​part (12) snaps onto the first end of the cathode tube (3), and the insulating head (2) blocks the second end of the cathode tube (3); The end of the first sleeve (11) away from the insulating head (2) is fitted onto the mounting base (41).

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