Carbon dioxide laser tube

Abstract

The utility model discloses a carbon dioxide laser tube which comprises a tube shell which is of a layer sleeve type structure, one end of the tube shell is an output mirror installation end, the other end of the tube shell is a total reflection mirror installation end, external threads are arranged on the outer wall of a tube opening, close to the output mirror installation end, of the tube shell, and external threads are arranged on the outer wall of a tube opening, close to the total reflection mirror installation end, of the tube shell. The two sets of water-cooled jackets are arranged, cylinder structure sections are arranged on the water-cooled jackets, threaded parts matched with the external threads are arranged on the inner walls, corresponding to the cylinder structure sections, of the water-cooled jackets, clamping grooves connected with the lenses are formed in the positions, close to one ends of the threaded parts, of the inner sides of the water-cooled jackets, and the output mirror mounting end of the tube shell is matched with the water-cooled jackets to be fixedly connected with the output mirror. According to the utility model, the cold water jacket does not need to be fixed by using tools such as a clamp and the like, and does not need to wait for glue to fix, so that the operation procedures and the processing time are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of laser technology, specifically relating to a carbon dioxide laser tube. Background Technology

[0002] Sealed carbon dioxide laser tubes are generally made of borosilicate glass and typically have a three-layer structure: from the inside out, a discharge tube, a cooling water tube, and a gas storage tube. The discharge tube has a cathode and an anode installed at its two ends, respectively. The cooling water tube is connected to a chiller via inlet and outlet, allowing cold water to enter the cooling water jacket and cool the discharge tube. The gas storage tube stores the working gas; one end of the discharge tube is open inside the gas storage tube, while the other end is connected to the gas storage tube via a return gas tube. A total reflection mirror and an output mirror are attached to the corresponding ends of the discharge tube. When high voltage is applied to the cathode and anode, the working gas inside the discharge tube is excited. The excited carbon dioxide molecules release photons of a specific wavelength through energy level transitions. These photons are amplified within a resonant cavity formed by the discharge tube, total reflection mirror, and output mirror, forming a laser beam that is output from the output mirror. Cooling water jackets are attached to the end faces of the total reflection mirror and the output mirror for cooling.

[0003] Traditionally, laser tube manufacturing involves gluing the lens to the tube opening. Water-cooling jackets and heat dissipation jackets are also glued to the lens. The cooling water jackets for the total reflection mirror and output mirror are adhesively bonded to the lens end face. During gluing, clamps or other tools are used to secure the cooling water jacket while waiting for the adhesive to cure. During this waiting period, the laser tube must be kept vertical and kept away from the cooling water jacket and clamps to prevent them from detaching. Because the cooling water jacket is directly glued to the lens end face, even after successful gluing, any impact to the cooling water jacket will directly stress the lens and cause damage.

[0004] Therefore, how to provide a carbon dioxide laser tube that can quickly complete the bonding of the cold water jacket and improve production efficiency is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a carbon dioxide laser tube in which the cold water jacket is bonded and fixed at the opening of the laser tube, avoiding direct contact with the lens, protecting the lens, and enabling the bonding of the cold water jacket to be completed quickly, thereby improving production efficiency.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a carbon dioxide laser tube, comprising:

[0007] The tube shell is a layered sleeve structure. One end of the tube shell is the output mirror mounting end, and the other end is the total reflection mirror mounting end. The outer wall of the tube shell near the output mirror mounting end is provided with external threads.

[0008] The water-cooling jacket has two sets, each with a cylindrical section. The inner wall of the corresponding cylindrical section of the water-cooling jacket has a threaded portion that matches the external thread. The inner side of the water-cooling jacket, near the threaded portion, has a slot for connecting a lens. The output lens mounting end of the tube shell is fixedly connected to the output lens with the water-cooling jacket, and the total reflection mirror mounting end of the tube shell is fixedly connected to the total reflection mirror with the water-cooling jacket.

[0009] The beneficial technical effects of this utility model are as follows: Compared with traditional laser tubes, this product rolls external threads on the outer walls of both ends of the tube opening during the laser tube shell firing process, changing the traditional structure of the cooling water jacket. A cylindrical structure section is provided on the cooling water jacket to screw the cooling water jacket onto the tube opening of the shell. The inside of the cooling water jacket has a slot for attaching the lens. During installation, the output mirror or total reflection mirror can be squeezed onto the output mirror mounting end or total reflection mirror mounting end of the tube shell by the cooling water jacket, eliminating the need for adhesive fixing between the cooling water jacket and the lens. The fixing is simple and efficient. In addition, this product uses the cooling water jacket to wrap the lens, which has a certain protective effect and protects the lens from damage.

[0010] Preferably, a thermally conductive adhesive is connected to the bottom of the slot, and the thermally conductive adhesive is used to abut against the output mirror and / or the total reflection mirror.

[0011] The resulting technical effect is that the thermal pad can transfer heat to the water cooling sleeve, thereby transferring and carrying away the heat from the lens, effectively dissipating heat. The thermal pad also acts as a buffer, preventing the water cooling sleeve from directly hitting the lens. Specifically, a thermally conductive silicone sheet can be used.

[0012] Preferably, one end face of the output mirror abuts against the thermal conductive patch, and the other end face abuts against the output mirror mounting end of the tube shell, and the water cooling sleeve covers the tube opening and the output mirror of the corresponding output mirror mounting end; one end face of the total reflection mirror abuts against the thermal conductive patch, and the other end face abuts against the total reflection mirror mounting end of the tube shell, and the water cooling sleeve covers the tube opening and the total reflection mirror of the corresponding total reflection mirror mounting end.

[0013] The resulting technical effects are: the installation of the water cooling jacket and the pipe opening can transfer external forces to the pipe opening, and the setting of the thermal pad can also prevent external forces from being directly transferred to the lens and causing lens damage. The thermal pad can be used as a thermal pad.

[0014] Preferably, the water-cooled jacket has a cooling water jacket inside the corresponding cylindrical section, and the water-cooled jacket has an inlet and an outlet. The water-cooled jacket is connected to an external chiller through the inlet and outlet.

[0015] The resulting technical effect is that the water-cooling jacket can also dissipate heat from the tube opening, thereby helping to reduce the heat of the lens.

[0016] Preferably, the thermal conductive patch has an annular sheet structure, and there is a gap between the thermal conductive patch and the side wall of the slot.

[0017] The resulting technical effect is that the thermal conductive patch acts as a medium for heat conduction and also as a buffer for force, preventing the lens from directly contacting the cold water jacket, thus avoiding damage to the lens and protecting it. The ring-shaped thermal conductive patch also does not affect the laser emission path.

[0018] Preferably, the casing includes a discharge tube, a water-cooling tube, and a gas storage tube arranged sequentially in inner and outer layers. The discharge tube is located in the inner layer, the gas storage tube is located in the outer layer, and the water-cooling tube is located in the middle layer. The water-cooling tube is provided with a water inlet and a water outlet, which extend to the outside of the gas storage tube. A return gas tube is wound around the outside of the water-cooling tube. One end of the return gas tube is connected to the discharge tube, and the other end is connected to the gas storage tube. A cathode and an anode are respectively arranged in the two ends of the casing. The cathode and anode are respectively connected to an external power source through tungsten rods.

[0019] The resulting technical effect is that when high voltage is applied to the anode and cathode through the tungsten rod, the working gas inside the discharge tube is excited. The excited carbon dioxide molecules release photons of a specific wavelength through energy level transitions. These photons are amplified in the resonant cavity composed of the discharge tube, the total reflection mirror, and the output mirror, and form a laser that is output from one end of the output mirror. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a carbon dioxide laser tube according to the present invention;

[0021] Figure 2 This is a structural diagram of an existing carbon dioxide laser tube.

[0022] 1. Tube shell, 11. Output mirror mounting end, 12. Total reflection mirror mounting end, 2. Discharge tube, 3. Water cooling tube, 31. Water inlet, 32. Water outlet, 4. Gas storage tube, 5. Gas return tube, 6. Water cooling jacket, 61. Threaded part, 62. Slot, 7. Thermal conductive pad, 8. Total reflection mirror, 9. Output mirror, 10. Tungsten rod, 101. Anode, 102. Cathode. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] See appendix to this utility model Figures 1 to 2 According to an embodiment of the present invention, a carbon dioxide laser tube includes:

[0025] Tube shell 1, tube shell 1 is a layered sleeve structure, one end of tube shell 1 is the output mirror mounting end 11, the other end is the total reflection mirror mounting end 12, the outer wall of the tube shell 1 near the output mirror mounting end 11 is provided with external threads, the outer wall of the tube shell 1 near the total reflection mirror mounting end 12 is provided with external threads.

[0026] Water-cooled jacket 6, there are two sets of water-cooled jacket 6, the purpose of which is to fix the output mirror 9 and the total reflection mirror 8. Each water-cooled jacket 6 is provided with a cylindrical structure section. The inner wall of the corresponding cylindrical structure section of the water-cooled jacket 6 is provided with a threaded part 61 that matches the external thread. On the inner side of the water-cooled jacket 6, near the end of the threaded part, there is a slot 62 for connecting the lens. The output mirror mounting end of the tube shell 1 is fixedly connected to the output mirror 9 with the water-cooled jacket 6, and the total reflection mirror mounting end of the tube shell 1 is fixedly connected to the total reflection mirror 8 with the water-cooled jacket 6.

[0027] Compared to traditional water-cooling jacket bonding, this product uses a screw-on connection between the water-cooling jacket and the corresponding pipe opening to fix the lens to the end of the pipe opening, thus achieving lens installation. The lens and water-cooling jacket do not require adhesive, making the connection convenient. In addition, the lens is encased in the water-cooling jacket, which can also reduce damage caused by external impacts.

[0028] In other embodiments, a thermally conductive patch 7 is connected to the bottom of the slot 62. The thermally conductive patch 7 is used to abut against the output mirror 9 and / or the total reflection mirror 8. The thermally conductive patch can transfer heat and absorb external force to avoid damaging the lens.

[0029] In other embodiments, one end face of the output mirror 9 abuts against the thermally conductive patch 7, and the other end face abuts against the output mirror mounting end 11 of the housing 1. The water-cooling sleeve 6 covers the corresponding port of the output mirror mounting end and the output mirror 9. One end face of the total reflection mirror 8 abuts against the thermally conductive patch 7, and the other end face abuts against the total reflection mirror mounting end 12 of the housing 1. The water-cooling sleeve 6 covers the corresponding port of the total reflection mirror mounting end and the total reflection mirror 8. It can be understood that the lens is wrapped by the water-cooling sleeve. When the water-cooling sleeve is hit by an external force, the force is applied to the port through the water-cooling sleeve. The thermally conductive patch between the water-cooling sleeve and the lens will filter out the external force during the impact. The thermally conductive patch can be a silicone thermally conductive patch, which protects the lens from damage.

[0030] In some other embodiments, the water-cooled jacket 6 has a cooling water jacket inside the corresponding cylindrical structure section. The water-cooled jacket 6 has an inlet and an outlet. The water-cooled jacket 6 is connected to an external chiller through the inlet and outlet. The water-cooled jacket can dissipate heat from the pipe opening, thereby assisting in the heat dissipation of the lens.

[0031] In some other embodiments, the thermal conductive patch 7 is a ring-shaped sheet structure to avoid affecting the laser emission path. There is a gap between the thermal conductive patch 7 and the side wall of the slot 62 to avoid direct contact between the water cooling jacket and the lens, thereby protecting the lens from damage.

[0032] In some other specific embodiments, the shell 1 includes a discharge tube 2, a water-cooling tube 3, and a gas storage tube 4 arranged in an inner and outer layer, respectively. The discharge tube 2 is located in the inner layer, the gas storage tube 4 is located in the outer layer, and the water-cooling tube 3 is located in the middle layer. The water-cooling tube 3 is provided with a water inlet 31 and a water outlet 32, which extend to the outside of the gas storage tube 4. A return gas tube 5 is wound around the outside of the water-cooling tube 3. One end of the return gas tube 5 is connected to the discharge tube 2, and the other end is connected to the gas storage tube 4. A cathode 102 and an anode 101 are respectively arranged in the two ends of the shell 1. The cathode 102 and the anode 101 are respectively connected to an external power source through a tungsten rod 10.

[0033] This product features an externally threaded nozzle on the laser tube. After lens assembly, the water-cooling jacket is installed and fixed to the nozzle. The water-cooling jacket has a cylindrical section with a threaded inner wall that engages with the external thread of the nozzle. A thermally conductive pad is placed between the end faces of the water-cooling jacket and the lens. This operation eliminates the need for clamps or other tools to secure the water-cooling jacket and eliminates the need to wait for adhesive to set, reducing operational steps and processing time, and improving production efficiency. The cooling water in the water-cooling jacket carries away the heat from the lens through the thermally conductive pad. Furthermore, the water-cooling jacket completely encloses the lens and nozzle. When the water-cooling jacket is subjected to external impact, the force is transferred through the water-cooling jacket to the nozzle, and the thermally conductive pad between the water-cooling jacket and the lens filters out the impact force, protecting the lens from damage.

[0034] In use, high voltage is applied to the anode and cathode through a tungsten rod, which excites the working gas inside the discharge tube. The excited carbon dioxide molecules release photons of a specific wavelength through energy level transitions. These photons are amplified in a resonant cavity composed of a discharge tube, a total reflection mirror, and an output mirror, and form a laser that is output from one end of the output mirror.

[0035] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A carbon dioxide laser tube, characterized in that, include: The tube shell (1) is a layered sleeve structure. One end of the tube shell (1) is the output mirror mounting end (11), and the other end is the total reflection mirror mounting end (12). The outer wall of the tube shell (1) near the output mirror mounting end (11) is provided with external threads, and the outer wall of the tube shell (1) near the total reflection mirror mounting end (12) is provided with external threads. Water cooling jacket (6), there are two sets of water cooling jacket (6), each water cooling jacket (6) is provided with a cylindrical structure section, the inner wall of the water cooling jacket (6) corresponding to the cylindrical structure section is provided with a threaded part (61) that matches the external thread, the inner side of the water cooling jacket (6) and near the threaded part is provided with a slot (62) for connecting the lens, the output lens mounting end of the tube shell (1) is fixedly connected to the output lens (9) with the water cooling jacket (6), and the total reflection mirror mounting end of the tube shell (1) is fixedly connected to the total reflection mirror (8) with the water cooling jacket (6).

2. A carbon dioxide laser tube according to claim 1, characterized in that, The bottom of the slot (62) is connected to a thermally conductive patch (7), which is used to abut against the output mirror (9) and / or the total reflection mirror (8).

3. A carbon dioxide laser tube according to claim 2, characterized in that, One end face of the output mirror (9) abuts against the thermal conductive patch (7), and the other end face abuts against the output mirror mounting end (11) of the shell (1). The water cooling sleeve (6) wraps the corresponding output mirror mounting end's opening and the output mirror (9). One end face of the total reflection mirror (8) abuts against the thermal conductive patch (7), and the other end face abuts against the total reflection mirror mounting end (12) of the shell (1). The water cooling sleeve (6) wraps the corresponding total reflection mirror mounting end's opening and the total reflection mirror (8).

4. A carbon dioxide laser tube according to claim 1, characterized in that, The water-cooled jacket (6) has a cooling water jacket inside the corresponding cylindrical structure section. The water-cooled jacket (6) has an inlet and an outlet. The water-cooled jacket (6) is connected to an external chiller through the inlet and outlet.

5. A carbon dioxide laser tube according to claim 2, characterized in that, The thermal conductive patch (7) has an annular sheet structure, and there is a gap between the thermal conductive patch (7) and the side wall of the slot (62).

6. A carbon dioxide laser tube according to claim 1, characterized in that, The casing (1) includes a discharge tube (2), a water-cooling tube (3), and a gas storage tube (4) arranged in an inner and outer layer, respectively. The discharge tube (2) is located in the inner layer, the gas storage tube (4) is located in the outer layer, and the water-cooling tube (3) is located in the middle layer. The water-cooling tube (3) is provided with a water inlet (31) and a water outlet (32). The water inlet (31) and the water outlet (32) extend to the outside of the gas storage tube (4). A return gas tube (5) is wound around the outside of the water-cooling tube (3). One end of the return gas tube (5) is connected to the discharge tube (2), and the other end is connected to the gas storage tube (4). A cathode (102) and an anode (101) are respectively arranged in the two ends of the casing (1). The cathode (102) and the anode (101) are respectively connected to an external power source through a tungsten rod (10).

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