Pre-ionization device for radio frequency carbon dioxide laser

Abstract

The utility model discloses a preionization device for a radio frequency carbon dioxide laser, which relates to the technical field of laser, and comprises a laser shell and an ultraviolet light-emitting lamp, and further comprises a transfer sealing assembly and a support assembly which are arranged between the laser shell and the ultraviolet light-emitting lamp, and a laser resonant cavity is arranged on the laser shell; the adjusting and sealing assembly comprises a strip-shaped box, a lead screw, a rectangular guide block, a supporting sleeve, a sealing strip plate and a sealing rubber ring. The supporting assembly comprises a bearing transverse plate and a supporting block. According to the utility model, after the sealing strip plate is moved away from the laser shell, the ultraviolet light-emitting lamp can be directly taken out for maintenance along with the bearing transverse plate, and after the sealing strip plate is moved close to the laser shell, the sealing rubber ring can be pushed into the frame-shaped groove at the outer side of the strip-shaped through groove, and the strip-shaped through groove is sealed; according to the equipment, the ultraviolet light-emitting lamp on the laser shell can be taken independently, and the laser shell can be sealed simply and conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of lasers, in particular to a pre-ionization device for a radio frequency carbon dioxide laser. Background Art

[0002] RF slab CO2 lasers usually use an RF power supply to input an RF signal to the positive electrode in the resonant cavity, and the discharge of the positive electrode to the negative electrode is used to excite the laser working gas between the positive and negative electrodes to discharge and output the laser. In the initial stage of the positive electrode discharge, the large impedance mismatch between the RF excitation power supply and the unexcited discharge makes the transmission of RF energy very difficult. When the RF power supply is low or the frequency is low, the oscillation of the laser working gas will be significantly delayed, and it may even be difficult to oscillate and output the laser, making it difficult to start a lower power laser.

[0003] The publication (announcement) number is CN218569482U, which discloses a pre-ionization device for radio frequency carbon dioxide lasers, characterized in that: an ultraviolet light emitting lamp capable of emitting ultraviolet light is arranged in the laser resonant cavity, and the ultraviolet light emitted by the ultraviolet light emitting lamp can decompose the gas molecules in the laser working gas in the laser resonant cavity, playing a role in gas pre-ionization. The utility model pre-ionizes the laser working gas by arranging an ultraviolet light emitting lamp in the laser resonant cavity, so that the laser can still discharge and oscillate quickly under the excitation of a lower power and lower frequency radio frequency power supply, reducing the delay that may occur during the excitation discharge, so it is suitable for popularization and use.

[0004] Although the above scheme can pre-ionize the gas in the laser resonant cavity through the ultraviolet lamp, the laser housing must be disassembled as a whole when the ultraviolet lamp is assembled or repaired on the laser resonant cavity. It is difficult for the equipment to take out and assemble the ultraviolet lamp on the laser separately. Therefore, we propose a pre-ionization device for RF carbon dioxide laser. Utility Model Content

[0005] The main purpose of the utility model is to provide a pre-ionization device for radio frequency carbon dioxide lasers, which solves the problem of difficulty in separately taking and assembling the ultraviolet light lamp on the laser by setting a movable sealing component and a supporting component.

[0006] To solve the above technical problems, the utility model is implemented by the following technical solutions: a pre-ionization device for a radio frequency carbon dioxide laser, comprising a laser housing and an ultraviolet light emitting lamp, and further comprising: a mobilization sealing component and a supporting component arranged between the laser housing and the ultraviolet light emitting lamp, wherein a laser resonant cavity is arranged on the laser housing;

[0007] The transfer and sealing assembly includes a strip box, a lead screw, a rectangular guide block, a support sleeve, a sealing strip plate, and a sealing rubber ring. There are two strip boxes, which are respectively fixedly arranged on the top surfaces of both sides of the laser housing. The lead screw is movably arranged on the inner wall of one of the strip boxes. There are two rectangular guide blocks, which are respectively located in the two strip boxes. One of the rectangular guide blocks is threadedly connected to the lead screw. One end of the support sleeve is connected to the end face of the rectangular guide block. A strip through groove is formed on the top surface of one side of the laser resonator cavity. The sealing strip plate is fixedly arranged at the other end of the support sleeve that extends out of the strip box movably, and the sealing strip plate is arranged parallel to the strip through groove. A frame-shaped groove is arranged outside the strip through groove. One end of the sealing rubber ring is connected to the side face of the sealing strip plate, and the other end of the sealing rubber ring extends into the frame-shaped groove movably. A turntable is fixedly arranged at the end of the lead screw that extends out of the strip box movably;

[0008] The support assembly includes a bearing cross plate and a support block. A positioning groove is formed on the side face of the sealing strip plate. One end of the bearing cross plate extends into the positioning groove movably. The support block is in a "U" shape and is fixedly arranged at the top end of one side of the laser resonator cavity. The other end of the bearing cross plate extends through the strip through groove movably and extends into the inner side of the support block. The ultraviolet light-emitting lamp is fixedly installed on the bottom surface of the bearing cross plate and is located outside the support block.

[0009] Preferably, the transfer and sealing assembly further includes a guide rod. The guide rod is fixedly arranged on the inner wall of the other strip box and movably penetrates through the other rectangular guide block. The support sleeve and the rectangular guide block are arranged in one-to-one correspondence.

[0010] Preferably, there are two support blocks, which are symmetrically arranged on the horizontal plane in the transverse direction of the laser housing.

[0011] Preferably, the lead screw and the sealing strip plate are arranged perpendicular to each other.

[0012] Preferably, a positive electrode and a negative electrode are arranged in the laser resonator cavity. The positive electrode is located below the bearing cross plate, and the negative electrode is located below the positive electrode.

[0013] Compared with the prior art, the pre-ionization device for a radio frequency carbon dioxide laser of the present utility model has the following beneficial effects:

[0014] 1. In the present utility model, by providing a transfer and closing assembly, when the ultraviolet light-emitting lamp enters and exits the laser resonator through the strip-shaped through groove on the top surface of one side of the laser resonator along with the bearing cross plate, the rotation of the screw rod in the strip-shaped box can be controlled in both forward and reverse directions by holding the turntable. One of the rectangular guide blocks threadedly connected to the screw rod can drive the support sleeve to translate on the strip-shaped box under the action of force to adjust the exposed area. The sealing strip plate can be driven by the support sleeve to adjust the distance from the laser housing. The other rectangular guide block can slide and translate on the guide rod to cooperate with the movement of the support sleeve and the sealing strip plate and provide auxiliary support for them. After the sealing strip plate moves away from the laser housing, the ultraviolet light-emitting lamp can be directly taken out for maintenance along with the bearing cross plate. After the sealing strip plate moves closer to the laser housing, the sealing rubber ring can be pushed into the frame-shaped groove outside the strip-shaped through groove, and the strip-shaped through groove is sealed. It is convenient to separately take out the ultraviolet light-emitting lamp on the laser housing and seal the laser housing in the device.

[0015] 2. In the present utility model, by providing a support assembly, when the sealing strip plate moves away from the laser housing, one end of the bearing cross plate can movably penetrate the strip-shaped through groove and extend into the inside of the support block. The support block in a "U" shape can position and support one end of the bearing cross plate. After the sealing strip plate moves closer to the laser housing, the other end of the bearing cross plate can movably extend into the positioning groove on the side of the sealing strip plate. While the bearing cross plate is pressed against the support block, it also obtains positioning support at the other end. The assembly operation of the ultraviolet light-emitting lamp on the laser housing in the device is simple and its placement stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of a pre-ionization device for a radio frequency carbon dioxide laser of the present utility model;

[0018] Figure 2 It is a schematic side view structure diagram of a pre-ionization device for a radio frequency carbon dioxide laser of the present utility model;

[0019] Figure 3 For the present utility model Figure 2 It is a schematic cross-sectional structure diagram at A-A in the present utility model;

[0020] Figure 4 For the present utility model Figure 2 It is a schematic cross-sectional structure diagram at B-B in the present utility model;

[0021] Figure 5For this utility model Figure 3 Schematic diagram of the cross-sectional structure at CC in the middle.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Laser housing;

[0024] 2. Move the closed assembly; 201. Strip box; 202. Screw rod; 203. Rectangular guide block; 204. Support sleeve; 205. Closed strip plate; 206. Closed rubber ring; 207. Guide rod;

[0025] 3. Support assembly; 301. Positioning groove; 302. Load-bearing horizontal plate; 303. Support block;

[0026] 4. Ultraviolet light;

[0027] 5. Positive electrode;

[0028] 6. Negative electrode. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0032] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown in the figure, a pre-ionization device for a radio frequency carbon dioxide laser includes a laser housing 1 and an ultraviolet light-emitting lamp 4, and further includes: a transfer and sealing assembly 2 and a support assembly 3 disposed between the laser housing 1 and the ultraviolet light-emitting lamp 4. A laser resonator is provided on the laser housing 1;

[0033] The transfer and sealing assembly 2 includes a strip box 201, a lead screw 202, a rectangular guide block 203, a support sleeve 204, a sealing strip plate 205, and a sealing rubber ring 206. There are two strip boxes 201 in total, which are respectively fixedly arranged on the top surfaces of both sides of the laser housing 1. The lead screw 202 is movably arranged on the inner wall of one of the strip boxes 201. There are two rectangular guide blocks 203 in total, which are respectively located in the two strip boxes 201. One of the rectangular guide blocks 203 is threadedly connected to the lead screw 202. One end of the support sleeve 204 is connected to the end face of the rectangular guide block 203. A strip-shaped through groove is opened on the top surface of one side of the laser resonator. The sealing strip plate 205 is fixedly arranged at the other end of the support sleeve 204 that movably extends outside the strip box 201, and the sealing strip plate 205 is arranged parallel to the strip-shaped through groove. A frame-shaped groove is arranged outside the strip-shaped through groove. One end of the sealing rubber ring 206 is connected to the side surface of the sealing strip plate 205, and the other end of the sealing rubber ring 206 movably extends into the frame-shaped groove;

[0034] The support assembly 3 includes a bearing cross plate 302 and a support block 303. A positioning groove 301 is opened on the side surface of the sealing strip plate 205. One end of the bearing cross plate 302 movably extends into the positioning groove 301. The support block 303 is in a "U" shape and is fixedly arranged at the top end of one side of the laser resonator. The other end of the bearing cross plate 302 movably penetrates through the strip-shaped through groove and extends to the inside of the support block 303. The ultraviolet light-emitting lamp 4 is fixedly installed on the bottom surface of the bearing cross plate 302 and is located outside the support block 303.

[0035] Furthermore, the transfer and sealing assembly 2 further includes a guide rod 207. The guide rod 207 is fixedly arranged on the inner wall of the other strip box 201 and movably penetrates through the other rectangular guide block 203. The support sleeve 204 and the rectangular guide block 203 are arranged in one-to-one correspondence.

[0036] Furthermore, the lead screw 202 and the sealing strip plate 205 are arranged perpendicular to each other.

[0037] By means of the transfer and sealing assembly 2, it is convenient for the device to separately take the ultraviolet light-emitting lamp 4 on the laser housing 1 and seal the laser housing 1. Embodiment

[0038] Such as Figure 4 And Figure 5As shown in the figure, a pre-ionization device for a radio frequency carbon dioxide laser includes a laser housing 1 and an ultraviolet light-emitting lamp 4, and further includes: a transfer and sealing assembly 2 and a support assembly 3 disposed between the laser housing 1 and the ultraviolet light-emitting lamp 4. A laser resonator is provided on the laser housing 1;

[0039] The transfer and sealing assembly 2 includes a strip-shaped box 201, a lead screw 202, a rectangular guide block 203, a support sleeve 204, a sealing strip plate 205, and a sealing rubber ring 206. There are two strip-shaped boxes 201, which are respectively fixedly arranged on the top surfaces of both sides of the laser housing 1. The lead screw 202 is movably arranged on the inner wall of one of the strip-shaped boxes 201. There are two rectangular guide blocks 203, which are respectively located in the two strip-shaped boxes 201. One of the rectangular guide blocks 203 is threadedly connected to the lead screw 202. One end of the support sleeve 204 is connected to the end face of the rectangular guide block 203. A strip-shaped through groove is opened on the top surface of one side of the laser resonator. The sealing strip plate 205 is fixedly arranged at the other end of the support sleeve 204 that extends out of the strip-shaped box 201, and the sealing strip plate 205 is arranged parallel to the strip-shaped through groove. A frame-shaped groove is arranged outside the strip-shaped through groove. One end of the sealing rubber ring 206 is connected to the side surface of the sealing strip plate 205, and the other end of the sealing rubber ring 206 extends into the frame-shaped groove movably;

[0040] The support assembly 3 includes a bearing cross plate 302 and a support block 303. A positioning groove 301 is opened on the side surface of the sealing strip plate 205. One end of the bearing cross plate 302 extends into the positioning groove 301 movably. The support block 303 is in a "U" shape and is fixedly arranged at the top end of one side of the laser resonator. The other end of the bearing cross plate 302 extends through the strip-shaped through groove movably and extends into the inner side of the support block 303. The ultraviolet light-emitting lamp 4 is fixedly installed on the bottom surface of the bearing cross plate 302 and is located outside the support block 303.

[0041] Furthermore, there are two support blocks 303, which are symmetrically arranged on the horizontal plane in the transverse direction of the laser housing 1.

[0042] Furthermore, a positive electrode 5 and a negative electrode 6 are arranged in the laser resonator. The positive electrode 5 is located below the bearing cross plate 302, and the negative electrode 6 is located below the positive electrode 5.

[0043] The support assembly 3 makes the assembly operation of the ultraviolet light-emitting lamp 4 on the laser housing 1 of the device simple and its placement stability good.

[0044] The working principle of the present invention is as follows:

[0045] When the ultraviolet light-emitting lamp 4 enters and exits the laser resonator with the carrying cross plate 302 through the strip-shaped through groove on the top surface of one side of the laser resonator, the control screw rod 202 of the holding turntable rotates forward and backward on the strip-shaped box 201. One of the rectangular guide blocks 203 threadedly connected to the screw rod 202 drives the support sleeve 204 to translate on the strip-shaped box 201 under the action of force to adjust the exposed area. The closing strip plate 205 is driven by the support sleeve 204 to adjust the distance from the laser resonator housing 1. The other rectangular guide block 203 slides and translates on the guide rod 207 to cooperate with the adjustment of the support sleeve 204 and the closing strip plate 205. After the closing strip plate 205 moves away from the laser resonator housing 1, the ultraviolet light-emitting lamp 4 can be directly taken out for maintenance with the carrying cross plate 302. After the closing strip plate 205 moves close to the laser resonator housing 1, the sealing rubber ring 206 is pushed into the frame-shaped groove outside the strip-shaped through groove, and the strip-shaped through groove is sealed. When the closing strip plate 205 moves away from the laser resonator housing 1, one end of the carrying cross plate 302 movably penetrates through the strip-shaped through groove and extends to the inside of the support block 303. The support block 303 in a "U" shape provides positioning support for one end of the carrying cross plate 302. After the closing strip plate 205 moves close to the laser resonator housing 1, the other end of the carrying cross plate 302 movably extends into the positioning groove 301 on the side surface of the closing strip plate 205. While the carrying cross plate 302 is pressed against the support block 303, it also obtains positioning support for the other end.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-ionization device for a radio frequency carbon dioxide laser, comprising a laser housing (1) and an ultraviolet light emitting lamp (4), characterized in that: Further included are: A transfer and sealing assembly (2) and a support assembly (3) disposed between the laser housing (1) and the ultraviolet lamp (4), wherein a laser resonator is provided on the laser housing (1); The transfer and sealing assembly (2) includes a strip box (201), a lead screw (202), a rectangular guide block (203), a support sleeve (204), a sealing strip plate (205), and a sealing rubber ring (206). There are two strip boxes (201) which are respectively fixedly disposed on the top surfaces of both sides of the laser housing (1). The lead screw (202) is movably disposed on the inner wall of one of the strip boxes (201). There are two rectangular guide blocks (203) which are respectively located in the two strip boxes (201). One of the rectangular guide blocks (203) is threadedly connected to the lead screw (202). One end of the support sleeve (204) is connected to the end face of the rectangular guide block (203). A strip-shaped through groove is provided on the top surface of one side of the laser resonator. The sealing strip plate (205) is fixedly disposed at the other end of the support sleeve (204) which extends out of the strip box (201) movably, and the sealing strip plate (205) is arranged in parallel with the strip-shaped through groove. A frame-shaped groove is provided outside the strip-shaped through groove. One end of the sealing rubber ring (206) is connected to the side face of the sealing strip plate (205), and the other end of the sealing rubber ring (206) extends into the frame-shaped groove movably; The support assembly (3) includes a bearing cross plate (302) and a support block (303). A positioning groove (301) is provided on the side face of the sealing strip plate (205). One end of the bearing cross plate (302) extends into the positioning groove (301) movably. The support block (303) is in a "U" shape and is fixedly disposed at the top end of one side of the laser resonator. The other end of the bearing cross plate (302) extends through the strip-shaped through groove movably and extends into the inner side of the support block (303). The ultraviolet lamp (4) is fixedly installed on the bottom surface of the bearing cross plate (302) and is located outside the support block (303).

2. A pre-ionization device for a radio frequency carbon dioxide laser according to claim 1, characterized in that: The transfer and sealing assembly (2) further includes a guide rod (207). The guide rod (207) is fixedly disposed on the inner wall of the other strip box (201) and movably penetrates through the other rectangular guide block (203). The support sleeve (204) and the rectangular guide block (203) are arranged in one-to-one correspondence.

3. A preionization device for a radio frequency carbon dioxide laser according to claim 1, characterized in that: There are two support blocks (303) which are symmetrically arranged on the transverse horizontal plane of the laser housing (1).

4. A pre-ionization device for a radio frequency carbon dioxide laser according to claim 1, characterized in that: The lead screw (202) and the sealing strip plate (205) are perpendicularly arranged.

5. The pre-ionization device for radio frequency carbon dioxide laser according to claim 1, characterized in that: A positive electrode (5) and a negative electrode (6) are provided in the laser resonator. The positive electrode (5) is located below the bearing cross plate (302), and the negative electrode (6) is located below the positive electrode (5).

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