Self-cooling fiber laser

Abstract

The invention relates to the technical field of optical fiber lasers, and provides a self-cooling optical fiber laser which comprises an optical fiber laser body, a wire is installed at the output end of the optical fiber laser body, one end of the wire is fixedly connected with a transmitting end, and the outer wall of the optical fiber laser body is fixedly connected with an assembling mechanism. The assembling mechanism comprises a U-shaped positioning frame fixedly installed on the outer wall of the optical fiber laser body, the bottom of the U-shaped positioning frame is fixedly connected with a clamping plate, the outer wall of the U-shaped positioning frame is fixedly connected with a lantern ring, and the interior of the lantern ring is movably connected with a positioning bolt. According to the invention, by moving the optical fiber laser main body, the clamping plate is driven to be butted and clamped into the clamping groove formed in the substrate, at the moment, the U-shaped positioning frame and the substrate are butted, the positioning bolt penetrates through the lantern ring and is butted to the upper part of the threaded hole, and the positioning bolt is rotated, so that the effect of conveniently and stably assembling and connecting the optical fiber laser main body and the substrate is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fiber lasers, and particularly relates to a self-cooling fiber laser. Background Art

[0002] A fiber laser refers to a laser that uses a fiber doped with rare earth elements (such as ytterbium, erbium, praseodymium, etc.) as the gain medium, and uses fiber gratings, etc. as feedback elements, and generates laser output through the principle of stimulated emission. Generally, a semiconductor laser, etc. is used as the pump source, and the pump light is injected into the doped fiber through components such as a fiber coupler. The photon energy of the pump light is absorbed by the rare earth ions in the doped fiber, causing the rare earth ions to transition from the ground state to the excited state, forming a population inversion distribution. On the basis of the population inversion, when a photon with a suitable frequency is incident on the doped fiber, it will trigger the stimulated emission of the excited rare earth ions, emitting photons with the same frequency, phase, and polarization state as the incident photon. These photons continuously propagate in the fiber and interact with more excited ions to generate more stimulated emission photons, thereby achieving optical amplification. Fiber lasers usually use fiber gratings, etc. to form a resonant cavity, and only the light that satisfies the resonant cavity oscillation conditions can form a stable oscillation in the cavity. After multiple round-trip amplifications, high-power and high-beam-quality laser is finally output from the output end. The fiber has good waveguide characteristics, which can confine the laser to propagate in the fiber, making the laser have a high beam quality, manifested as a small spot size and a small divergence angle, and can achieve high-energy-density laser output, which is suitable for applications with high requirements for beam quality, such as laser cutting, welding, precision machining, etc.;

[0003] For existing fiber lasers, when in use, fixing bolts are generally used to fasten the fiber laser to the installation substrate. One side of the fiber laser is in a tightly attached state with the substrate. Although this installation method can achieve the basic fixing purpose, it has significant drawbacks in terms of heat dissipation. Since the fiber laser continuously generates heat during operation, the tightly attached structure makes it difficult for the heat to be effectively dissipated through the contact interface between the fiber laser and the substrate, and a large amount of heat accumulates between the two. As the heat accumulates, the temperature inside the fiber laser will gradually increase, which will not only affect its working performance, reduce the stability of laser output and the beam quality, but also may shorten the service life of the laser due to long-term exposure to a high-temperature environment. In addition, after the fiber laser is installed by bolts and put into use for a period of time, the problem of bolt loosening frequently occurs. This will not only cause the position of the fiber laser to shift, affecting its alignment accuracy with other optical components, and thus affecting the performance of the entire laser system, but may also cause more serious mechanical failures due to loose connections, such as the fiber laser falling off the installation substrate, resulting in equipment damage and production accidents. Summary of the Invention

[0004] The object of the present invention is to provide a self-cooling fiber laser to solve the defect that the existing fiber laser is inconvenient to be stably installed on a substrate.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a self-cooling fiber laser, including a fiber laser main body;

[0006] A wire is installed at the output end of the fiber laser main body, one end of the wire is fixedly connected with a transmitting end head, and an assembling mechanism is fixedly connected to the outer wall of the fiber laser main body;

[0007] The assembling mechanism includes a U-shaped positioning frame fixedly installed on the outer wall of the fiber laser main body, a clamping plate is fixedly connected to the bottom of the U-shaped positioning frame, a collar is fixedly connected to the outer wall of the U-shaped positioning frame, a positioning bolt is movably connected inside the collar, and a movable groove is opened inside the U-shaped positioning frame;

[0008] A substrate is installed at the bottom of the U-shaped positioning frame, a clamping groove is opened inside the substrate, a threaded hole is opened on the inner bottom wall of the clamping groove, and a clamping groove is opened on the inner side wall of the clamping groove.

[0009] Preferably, the positioning bolt forms a rotating structure with the U-shaped positioning frame through the movable groove, and the positioning bolt is threadedly connected with the substrate through the threaded hole.

[0010] Preferably, the clamping plate is snap-fitted with the substrate through the clamping groove, and the clamping grooves are symmetrically arranged with respect to the central axis of the substrate.

[0011] Preferably, a U-shaped elastic piece is fixedly connected to the top of the collar, a first return spring is fixedly connected to the inner wall of the U-shaped elastic piece, the U-shaped elastic pieces are arranged in an annular array with respect to the central axis of the collar, and the collar is of an open-hole design.

[0012] Preferably, a limiting mechanism is installed on the outer wall of the positioning bolt. The limiting mechanism includes a conical extrusion block fixedly installed on the outer wall of the positioning bolt, a limiting plate is movably connected to the outer wall of the conical extrusion block, and the limiting mechanism further includes a sliding groove opened inside the clamping plate.

[0013] Preferably, the conical extrusion block forms a rotating structure with the U-shaped positioning frame through the positioning bolt, and the conical extrusion block is movably connected with the limiting plate.

[0014] Preferably, the limiting plate forms a sliding structure with the clamping plate, and the limiting plate is snap-fitted with the substrate through the clamping groove.

[0015] Preferably, the slide groove is movably connected to a card plate inside, a second return spring is fixedly connected to one side of the card plate, the second return spring is sleeved on the outer wall of the limit plate, and the card plate forms a sliding structure with the card plate through the slide groove.

[0016] Preferably, a heat dissipation mechanism is fixedly connected to the bottom of the fiber laser body, and the heat dissipation mechanism includes a heat dissipation box fixedly installed on the bottom of the fiber laser body, a heat dissipation fan is installed inside the heat dissipation box, a heat dissipation groove is provided inside the heat dissipation box, a dustproof net is fixedly connected to one side of the heat dissipation groove, and a heat dissipation fin is fixedly connected to the bottom of the fiber laser body, and a heat dissipation hole is provided inside the heat dissipation fin.

[0017] Preferably, the heat dissipation fins are arranged at equal intervals at the bottom of the fiber laser body, the tops of the heat dissipation fins are installed in the fiber laser body, and the heat dissipation grooves are symmetrically arranged about the central axis of the heat dissipation box.

[0018] The self-cooling fiber laser provided by the present invention has the following advantages:

[0019] By providing a fiber laser body, an assembly mechanism, a substrate, a clamping groove and a threaded hole, the fiber laser body is moved to move the U-shaped positioning frame, driving the clamping plate to dock and clamp into the clamping groove provided inside the substrate. At this time, the U-shaped positioning frame and the substrate are docked, and the positioning bolt is passed through the collar and docked to the top of the threaded hole. The positioning bolt is rotated. Since the positioning bolt is threadedly connected to the substrate through the threaded hole, one end of the positioning bolt can be inserted into the threaded hole for limiting, which facilitates the stable assembly and connection of the fiber laser body and the substrate. Since the fiber laser body 1 is installed and connected to the substrate 6 through the U-shaped positioning frame 41, direct contact between the fiber laser body 1 and the substrate 6 can be avoided, providing heat dissipation space for the fiber laser body 1;

[0020] Furthermore, the U-shaped spring sheet is squeezed by the downward movement of the positioning bolt, so that the four U-shaped spring sheets are deformed, driving the first return spring to be squeezed, so that the four U-shaped spring sheets exert an upward lifting force on the head of the positioning bolt, so that the friction between the end of the positioning bolt and the threaded hole is increased, which can prevent the positioning bolt from loosening and improve the stability of the assembly;

[0021] Furthermore, by rotating and moving the positioning bolt downward, the conical extrusion block can be driven to rotate and move downward along the movable groove, so that the conical extrusion block squeezes the limit plates on both sides, so that the limit plates slide along the clamping plate, and one end of the limit plates is inserted into the clamping groove for limiting, thereby improving the assembly stability between the fiber laser body and the substrate;

[0022] Further, by sliding the limiting plate along the clamping plate, the clamping plate is driven to slide along the sliding groove, so that the second return spring is compressed. Under the action of the second return spring, the limiting plate can reversely apply an extrusion force to the conical extrusion block. Since the conical extrusion block is conically arranged, part of the extrusion force can be decomposed into a vertical jacking force, further enhancing the frictional force between one end of the positioning bolt and the threaded hole, and further preventing the positioning bolt from loosening.

[0023] By providing a heat dissipation mechanism, when the fiber laser main body operates to generate heat, the heat inside the fiber laser main body can be conducted to the heat dissipation box through a plurality of heat dissipation fins. Starting the heat dissipation fan can create a negative pressure inside the heat dissipation fan, and the air is pushed by the fan blades inside the heat dissipation fan to generate upward wind. When the wind blows on the heat dissipation fins, the heat on their surfaces can be taken away and dissipated through four heat dissipation slots. Since heat dissipation holes are provided inside the heat dissipation fins, the contact area between the heat dissipation fins and the air can be increased, further enhancing the heat dissipation effect. By installing a dust-proof net on one side of the heat dissipation slot, dust can be prevented from entering the heat dissipation box through the heat dissipation slot, achieving the effect of facilitating the rapid dissipation of the heat generated during the operation of the fiber laser main body, and improving the cooling efficiency of the fiber laser main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 is a three-dimensional view of the fiber laser main body of the present invention;

[0026] Figure 3 is a three-dimensional view of the substrate of the present invention;

[0027] Figure 4 is a three-dimensional sectional view of the U-shaped positioning bracket of the present invention;

[0028] Figure 5 is a three-dimensional view of the extrusion block of the present invention;

[0029] Figure 6 is a three-dimensional view of the U-shaped elastic piece of the present invention;

[0030] Figure 7 is of the present invention Figure 4 enlarged view of the structure at A;

[0031] Figure 8 is a three-dimensional view of the heat dissipation fin of the present invention;

[0032] Figure 9 is a front view of the heat dissipation mechanism of the present invention.

[0033] Description of the reference numerals in the figures: 1. Main body of the fiber laser; 2. Conducting wire; 3. Emitting end; 4. Assembly mechanism; 41. U-shaped positioning frame; 42. Clamping plate; 43. Collar; 431. U-shaped elastic piece; 432. First return spring; 44. Positioning bolt; 45. Activity groove; 5. Limiting mechanism; 51. Conical extrusion block; 52. Limiting plate; 53. Sliding groove; 531. Clamping plate; 532. Second return spring; 6. Substrate; 7. Heat dissipation mechanism; 71. Heat dissipation box; 72. Heat dissipation fan; 73. Heat dissipation groove; 74. Dust-proof net; 8. Clamping groove; 9. Threaded hole; 10. Card slot; 11. Heat dissipation fins; 12. Heat dissipation holes. Detailed implementation manners

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1-9 , a self-cooling fiber laser provided by the present invention includes a main body 1 of the fiber laser.

[0036] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in, a conducting wire 2 is installed at the output end of the main body 1 of the fiber laser. One end of the conducting wire 2 is fixedly connected to an emitting end 3. An assembly mechanism 4 is fixedly connected to the outer wall of the main body 1 of the fiber laser. The assembly mechanism 4 includes a U-shaped positioning frame 41 fixedly installed on the outer wall of the main body 1 of the fiber laser. A clamping plate 42 is fixedly connected to the bottom of the U-shaped positioning frame 41. A collar 43 is fixedly connected to the outer wall of the U-shaped positioning frame 41. A positioning bolt 44 is movably connected inside the collar 43. An activity groove 45 is opened inside the U-shaped positioning frame 41. A substrate 6 is installed at the bottom of the U-shaped positioning frame 41. A clamping groove 8 is opened inside the substrate 6. A threaded hole 9 is opened on the inner bottom wall of the clamping groove 8. A card slot 10 is opened on the inner side wall of the clamping groove 8. The positioning bolt 44 forms a rotating structure with the U-shaped positioning frame 41 through the activity groove 45. The positioning bolt 44 is threadedly connected to the substrate 6 through the threaded hole 9. The clamping plate 42 is snap-fitted to the substrate 6 through the clamping groove 8. The clamping groove 8 is symmetrically arranged with respect to the central axis of the substrate 6. A U-shaped elastic piece 431 is fixedly connected to the top of the collar 43. A first return spring 432 is fixedly connected to the inner wall of the U-shaped elastic piece 431. The U-shaped elastic pieces 431 are arranged in a circular array with respect to the central axis of the collar 43. The collar 43 is of an open-hole design.

[0037] By moving the fiber laser body 1, the U-shaped positioning frame 41 is moved, and the clamping plate 42 is driven to dock and clamp into the clamping groove 8 opened inside the substrate 6. At this time, the U-shaped positioning frame 41 and the substrate 6 are docked, and the positioning bolt 44 is passed through the ring 43 and docked to the top of the threaded hole 9, and the positioning bolt 44 is rotated. Since the positioning bolt 44 is threadedly connected to the substrate 6 through the threaded hole 9, one end of the positioning bolt 44 can be inserted into the threaded hole 9 for limiting. Since the fiber laser body 1 is installed and connected to the substrate 6 through the U-shaped positioning frame 41, direct contact between the fiber laser body 1 and the substrate 6 can be avoided, and heat dissipation space is provided for the fiber laser body 1. The U-shaped spring piece 431 is squeezed by moving the positioning bolt 44 downward, so that the four U-shaped spring pieces 431 are deformed, and the first return spring 432 is squeezed, so that the four U-shaped spring pieces 431 will apply an upward lifting force to the head of the positioning bolt 44, so that the friction between the end of the positioning bolt 44 and the threaded hole 9 is increased, which can prevent the positioning bolt 44 from loosening.

[0038] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, a limiting mechanism 5 is installed on the outer wall of the positioning bolt 44, and the limiting mechanism 5 includes a tapered extrusion block 51 fixedly installed on the outer wall of the positioning bolt 44, and the outer wall of the tapered extrusion block 51 is movably connected to the limiting plate 52. The limiting mechanism 5 also includes a slide groove 53 opened inside the clamping plate 42, and the tapered extrusion block 51 forms a rotating structure with the U-shaped positioning frame 41 through the positioning bolt 44, and the tapered extrusion block 51 is movably connected with the limiting plate 52, and the limiting plate 52 and the clamping plate 42 form a sliding structure, and the limiting plate 52 is clamped and connected with the base plate 6 through the clamping groove 10, and the inside of the slide groove 53 is movably connected with a clamping plate 531, and a second return spring 532 is fixedly connected to one side of the clamping plate 531, and the second return spring 532 is sleeved on the outer wall of the limiting plate 52, and the clamping plate 531 forms a sliding structure with the clamping plate 42 through the slide groove 53.

[0039] By rotating and moving the positioning bolt 44 downward, the conical extrusion block 51 can be driven to rotate and move downward along the movable groove 45, so that the conical extrusion block 51 squeezes the limit plates 52 on both sides, so that the limit plates 52 slide along the clamping plate 42, and one end of the limit plates is inserted into the clamping groove 10 for limiting. The limit plates 52 slide along the clamping plate 42, driving the clamping plate 531 to slide along the slide groove 53, so that the second return spring 532 is squeezed. Under the action of the second return spring 532, the limit plate 52 can reversely apply an extrusion force to the conical extrusion block 51. Since the conical extrusion block 51 is conically set, part of the extrusion force can be decomposed into a vertical lifting force, further enhancing the friction force connecting one end of the positioning bolt 44 and the threaded hole 9.

[0040] Refer to Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, a heat dissipation mechanism 7 is fixedly connected to the bottom of the fiber laser main body 1. The heat dissipation mechanism 7 includes a heat dissipation box 71 fixedly installed at the bottom of the fiber laser main body 1. A heat dissipation fan 72 is installed inside the heat dissipation box 71. A heat dissipation groove 73 is formed inside the heat dissipation box 71. A dust-proof net 74 is fixedly connected to one side of the heat dissipation groove 73. A heat dissipation fin 11 is fixedly connected to the bottom of the fiber laser main body 1. A heat dissipation hole 12 is formed inside the heat dissipation fin 11. The heat dissipation fins 11 are arranged at equal intervals along the bottom of the fiber laser main body 1. The top of the heat dissipation fin 11 is installed inside the fiber laser main body 1. The heat dissipation grooves 73 are symmetrically arranged with respect to the central axis of the heat dissipation box 71.

[0041] When heat is generated during the operation of the fiber laser main body 1, the heat inside the fiber laser main body 1 can be conducted to the inside of the heat dissipation box 71 through multiple heat dissipation fins 11. By starting the heat dissipation fan 72, negative pressure can be generated inside the heat dissipation fan 72, and the air is pushed by the fan blades inside the heat dissipation fan 72 to generate upward wind. When the wind blows on the heat dissipation fins 11, the heat on its surface can be taken away and dissipated through the four heat dissipation grooves 73. Since the heat dissipation holes 12 are formed inside the heat dissipation fins 11, the contact area between the heat dissipation fins 11 and the air can be increased, further improving the heat dissipation effect. By installing a dust-proof net 74 on one side of the heat dissipation groove 73, dust can be prevented from entering the heat dissipation box 71 through the heat dissipation groove 73.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-cooling fiber laser, comprising a fiber laser body (1); Features: A wire (2) is installed at the output end of the fiber laser body (1), one end of the wire (2) is fixedly connected to a transmitting end (3), and an outer wall of the fiber laser body (1) is fixedly connected to an assembly mechanism (4); The assembly mechanism (4) comprises a U-shaped positioning frame (41) fixedly mounted on the outer wall of the optical fiber laser body (1), a clamping plate (42) being fixedly connected to the bottom of the U-shaped positioning frame (41), a collar (43) being fixedly connected to the outer wall of the U-shaped positioning frame (41), a positioning bolt (44) being movably connected inside the collar (43), and a movable groove (45) being provided inside the U-shaped positioning frame (41); A base plate (6) is installed at the bottom of the U-shaped positioning frame (41), a clamping groove (8) is provided inside the base plate (6), a threaded hole (9) is provided on the inner bottom wall of the clamping groove (8), and a clamping groove (10) is provided on the inner side wall of the clamping groove (8).

2. The self-cooling fiber laser according to claim 1, characterized in that: The positioning bolt (44) forms a rotating structure with the U-shaped positioning frame (41) through a movable groove (45), and the positioning bolt (44) is threadedly connected to the base plate (6) through a threaded hole (9).

3. The self-cooling fiber laser according to claim 1, characterized in that: The clamping plate (42) is clamped and connected to the base plate (6) via a clamping groove (8), and the clamping groove (8) is symmetrically arranged with respect to the central axis of the base plate (6).

4. The self-cooling fiber laser according to claim 1, characterized in that: A U-shaped spring piece (431) is fixedly connected to the top of the collar (43), a first return spring (432) is fixedly connected to the inner wall of the U-shaped spring piece (431), the U-shaped spring piece (431) is arranged in a ring shape with the central axis of the collar (43), and the collar (43) is of open hole design.

5. The self-cooling fiber laser according to claim 1, characterized in that: The outer wall of the positioning bolt (44) is installed with a limiting mechanism (5), the limiting mechanism (5) comprises a conical extrusion block (51) fixedly installed on the outer wall of the positioning bolt (44), the outer wall of the conical extrusion block (51) is movably connected to the limiting plate (52), and the limiting mechanism (5) also comprises a sliding groove (53) opened inside the clamping plate (42).

6. The self-cooling fiber laser according to claim 5, characterized in that: The conical extrusion block (51) forms a rotating structure with the U-shaped positioning frame (41) via a positioning bolt (44), and the conical extrusion block (51) is movably connected to the limiting plate (52).

7. The self-cooling fiber laser according to claim 5, characterized in that: The limiting plate (52) and the clamping plate (42) form a sliding structure, and the limiting plate (52) is clamped and connected to the base plate (6) via a clamping groove (10).

8. The self-cooling fiber laser according to claim 5, characterized in that: The slide groove (53) is movably connected to a clamping plate (531) inside, and a second return spring (532) is fixedly connected to one side of the clamping plate (531). The second return spring (532) is sleeved on the outer wall of the limiting plate (52). The clamping plate (531) forms a sliding structure with the clamping plate (42) through the slide groove (53).

9. The self-cooling fiber laser according to claim 1, characterized in that: The bottom of the fiber laser body (1) is fixedly connected to a heat dissipation mechanism (7), the heat dissipation mechanism (7) comprises a heat dissipation box (71) fixedly mounted on the bottom of the fiber laser body (1), a heat dissipation fan (72) is mounted inside the heat dissipation box (71), a heat dissipation groove (73) is provided inside the heat dissipation box (71), a dustproof net (74) is fixedly connected to one side of the heat dissipation groove (73), and a heat dissipation fin (11) is fixedly connected to the bottom of the fiber laser body (1), and a heat dissipation hole (12) is provided inside the heat dissipation fin (11).

10. The self-cooling fiber laser according to claim 9, characterized in that: The heat dissipation fins (11) are arranged at equal intervals on the bottom of the fiber laser body (1), the tops of the heat dissipation fins (11) are installed in the fiber laser body (1), and the heat dissipation grooves (73) are symmetrically arranged on the central axis of the heat dissipation box (71).

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