Polarization maintaining optical fiber fusion splicer

Abstract

The application discloses a polarization maintaining optical fiber fusion splicer, which comprises a mounting box, a mounting plate fixedly connected inside the mounting box, a movable support seat arranged on the top of the mounting plate, a sliding rail fixedly connected to the top of the support seat, left and right side seats respectively slidably connected to the two sides of the surface of the sliding rail, and mounting frames fixedly connected to the top of the left and right side seats. The optical fiber is preliminarily positioned by a clamping plate capable of rotating on a support plate, and the optical fiber end face is limited and positioned by a fiber pressing foot on a rotating frame, so that the fusion precision is improved. When the two optical fibers are aligned, the V-shaped groove at the top of the positioning block moves together with the optical fiber, and the surface of the optical fiber is not damaged, so that the fusion effect of the optical fiber fusion splicer is improved.

Description

Technical Field

[0001] This invention relates to the field of polarization-maintaining fiber fusion splicer technology, specifically to a polarization-maintaining fiber fusion splicer. Background Technology

[0002] Optical fiber (or optical cable) is used to transmit optical signals, unlike cables that transmit electrical signals, enabling lossless, ultra-high-speed transmission of large amounts of information. The core of an optical cable is composed of very small-diameter optical fibers, making fiber optic connections difficult. One primary method for fiber optic access is fusion splicing using a fiber optic fusion splicer. The polarization-maintaining fiber optic fusion splicer is a high-end fusion splicing device designed for special fiber optic splicing in fields such as fiber optic communication, fiber optic sensing, and fiber lasers, suitable for a wide range of applications.

[0003] Chinese patent discloses an optical fiber fusion splicer (CN113917611A). This patent uses an alignment component set in the worktable. The alignment component uses an adjustment block and a stage, in conjunction with the spindle on a linear motor. When the spindle moves upward against the stage, the stage rotates around the rotating cavity as the rotation center, which further causes the adjustment block to undergo elastic deformation, thereby adjusting the position of the optical fiber. In this invention, the optical fiber is fixed by pressing down with a pressure plate. However, by only fixing the surface of the optical fiber, the end face of the optical fiber may still shift during fusion splicing due to the toughness of the optical fiber, resulting in poor fusion splicing effect. Summary of the Invention

[0004] The purpose of this invention is to provide a polarization-maintaining fiber fusion splicer to solve the following technical problems:

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A polarization-maintaining fiber fusion splicer includes a mounting box. A mounting plate is fixedly connected inside the mounting box. A movable support base is provided on the top of the mounting plate. A slide rail is fixedly connected to the top of the support base. A left support and a right support are slidably connected to both sides of the slide rail surface. A mounting frame is fixedly connected to the top of both the left and right supports. A rotating mechanism is provided inside the mounting frame. A support plate is fixedly connected to one side of the rotating mechanism. A pressure plate for pressing down the optical fiber is rotatably connected to the top of the support plate. A positioning block is fixedly connected to the top of both the left and right supports. A V-groove for positioning the optical fiber is formed on the top of the positioning block. Fusion joints are mounted on both sides of the top of the mounting box via brackets.

[0007] As a further aspect of the present invention: rotating frames are rotatably connected to both sides of the top of the mounting box, and optical fiber pressure feet are fixedly connected to the bottom of the rotating frames, with the bottom of the optical fiber pressure feet matching the inner surface of the V-groove.

[0008] As a further aspect of the present invention: a push block is fixedly connected to the front of the left bearing and the back of the right bearing, and a push mechanism is fixedly connected to the top of the support bearing and to one side of the push block.

[0009] As a further aspect of the present invention: the propulsion mechanism includes a mounting base located on a support seat, a nut is fixedly connected to one side of the mounting base, and a rotatable screw is threaded onto the inner surface of the nut.

[0010] As a further embodiment of the present invention: a servo motor is mounted on the other side of the mounting base, a drive gear is fixedly connected to the output end of the servo motor, a rotatable rotating gear is slidably connected to one side of the mounting base and the side located on the nut, the rotating gear meshes with the drive gear, and one end of the screw is fixedly connected to the inner surface of the rotating gear.

[0011] As a further embodiment of the present invention: sliding rods are fixedly connected to both sides of the bottom of the support base, and a sliding seat adapted to the outer surface of the sliding rods is fixedly connected to the top of the mounting plate.

[0012] As a further aspect of the present invention: a fixing frame is fixedly connected to the bottom of the mounting plate, a drive motor is fixedly connected to one side of the fixing frame, and a rotatable threaded rod is provided through the other side of the fixing frame. The output end of the drive motor is provided with a transmission component that drives the fixing frame to rotate. A threaded seat is threadedly connected to the outer surface of the threaded rod, and the top of the threaded seat is fixedly connected to the bottom of the support seat. A groove adapted to the moving stroke of the threaded seat is provided through the top of the mounting plate, and a fixing seat rotatably connected to one end of the threaded rod is fixedly connected to one side of the mounting plate.

[0013] The beneficial effects of this invention are:

[0014] (1) In this invention, a fixed frame is set at the bottom of the mounting plate, and the rotation of the servo motor drives the threaded rod to rotate. By utilizing the threaded connection between the threaded rod and the threaded seat, the position of the support seat can be moved. Two propulsion mechanisms are set on the support seat to push the propulsion blocks on the right and left seats respectively, thereby adjusting the position of the left and right seats. Through this structure, the position of the optical fiber on the support plate can be precisely adjusted, so that the problem of failure to connect during fusion splicing can be solved, thereby improving its practicality.

[0015] (2) In this invention, by setting a support plate on the rotating mechanism and positioning blocks on the left and right supports respectively, the optical fiber is initially positioned by the rotatable pressure plate on the support plate, and the optical fiber pressure foot on the rotating frame with a V-groove can limit and position the area near the end face of the optical fiber, thereby improving the accuracy of the fusion splicing. When aligning the two optical fibers, the V-groove on the top of the positioning block moves together with the optical fiber, without damaging the surface of the optical fiber, thus improving the fusion splicing effect of the optical fiber fusion splicer. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is an external perspective view of the entire invention;

[0018] Figure 2 This is a schematic diagram of the external structure of the mounting plate in this invention;

[0019] Figure 3 This is a side view of the external structure of the mounting plate in this invention;

[0020] Figure 4 This is a schematic diagram of the external structure of the support bearing in this invention;

[0021] Figure 5 This is a schematic diagram of the cooperation between the positioning block and the optical fiber clamp in this invention;

[0022] Figure 6 This is a top view of the external structure of the propulsion mechanism in this invention.

[0023] In the diagram: 1. Mounting box; 2. Mounting plate; 3. Support seat; 4. Slide rail; 5. Left side support; 6. Right side support; 7. Push stop; 8. Pushing mechanism; 81. Mounting seat; 82. Servo motor; 83. Drive gear; 84. Rotating gear; 85. Nut; 86. Screw; 9. Mounting bracket; 10. Rotating mechanism; 11. Support plate; 12. Pressure plate; 13. Positioning block; 14. Rotating frame; 15. Fiber optic clamp; 16. Fixing bracket; 17. Drive motor; 18. Transmission assembly; 19. Threaded rod; 20. Threaded seat; 21. Fixing seat; 22. Slide rod; 23. Slide block; 24. Fusion joint. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-6 As shown, this invention is a polarization-maintaining fiber fusion splicer, including a mounting box 1. A mounting plate 2 is fixedly connected inside the mounting box 1. A movable support 3 is provided on the top of the mounting plate 2. A slide rail 4 is fixedly connected to the top of the support 3. A left support 5 and a right support 6 are slidably connected to both sides of the surface of the slide rail 4. A mounting frame 9 is fixedly connected to the top of both the left and right supports 5 and 6. A rotatable rotating mechanism 10 is provided inside the mounting frame 9. A support plate 11 is fixedly connected to one side of the rotating mechanism 10. The top of the support plate 11 can rotate. A pressure plate 12 for pressing down the optical fiber is connected. Positioning blocks 13 are fixedly connected to the top of the left bearing 5 and the right bearing 6. The top of the positioning block 13 is provided with a V-shaped groove for positioning the optical fiber. Since the two positioning blocks 13 are located on the left bearing 5 and the right bearing 6 respectively, when the two optical fibers are moved and aligned, the optical fiber and the inner surface of the V-shaped groove will not move relative to each other, so as not to damage the surface of the optical fiber. Fusion joints 24 are installed on both sides of the top of the mounting box 1 through brackets. Fusion joints 24 are existing technology and will not be described in detail here.

[0026] The top of the mounting box 1 is rotatably connected to both sides of a rotating frame 14. The bottom of the rotating frame 14 is fixedly connected to an optical fiber clamping foot 15. The bottom of the optical fiber clamping foot 15 is adapted to the inner surface of the V-groove. The optical fiber can be further pressed by the optical fiber clamping foot 15, so that the optical fiber does not undergo unnecessary displacement.

[0027] Both the front of the left bearing 5 and the back of the right bearing 6 are fixedly connected to a push block 7. The top of the support bearing 3 and one side of the push block 7 are fixedly connected to a push mechanism 8, which is used to push the block.

[0028] The propulsion mechanism 8 includes a mounting base 81 located on the support bearing 3. A nut 85 is fixedly connected to one side of the mounting base 81. A rotatable screw 86 is threaded onto the inner surface of the nut 85. When the screw 86 rotates inside the nut 85, it can extend, thereby pushing the stop block.

[0029] A servo motor 82 is mounted on the other side of the mounting base 81. A drive gear 83 is fixedly connected to the output end of the servo motor 82. A rotatable rotating gear 84 is slidably connected to one side of the mounting base 81 and the side located on the nut 85. A limiting sleeve that mates with the surface of the rotating gear 84 is rotatably connected inside the mounting base 81, allowing the rotating gear 84 to slide inside the limiting sleeve. The rotating gear 84 is meshed with the drive gear 83. One end of the screw 86 is fixedly connected to the inner surface of the rotating gear 84.

[0030] Both sides of the bottom of the support base 3 are fixedly connected to sliding rods 22, and the top of the mounting plate 2 is fixedly connected to a sliding seat 23 that is adapted to the outer surface of the sliding rods 22. The support base 3 can be moved by the sliding rods 22 and the sliding seat 23, so that the two optical fibers can be placed in the middle position.

[0031] Please see Figure 4 The mounting plate 2 has a fixed bracket 16 fixedly connected to its bottom. A drive motor 17 is fixedly connected to one side of the fixed bracket 16. A rotatable threaded rod 19 is provided through the other side of the fixed bracket 16. The output end of the drive motor 17 is provided with a transmission assembly 18 that drives the fixed bracket 16 to rotate. The transmission assembly 18 consists of two grooved wheels and a V-belt. The outer surface of the threaded rod 19 is threadedly connected to a threaded seat 20. The top of the threaded seat 20 is fixedly connected to the bottom of the support bearing 3. The top of the mounting plate 2 has a slot that matches the travel of the threaded seat 20. A fixed seat 21 that is rotatably connected to one end of the threaded rod 19 is fixedly connected to one side of the mounting plate 2.

[0032] The working principle of this invention is as follows: First, the optical fiber is placed above the support plate 11. Then, the pressure plate 12 is rotated to press the optical fiber onto the support plate 11. Then, the drive motor 17 is started to rotate, which drives the threaded rod 19 to rotate through the transmission assembly 18. At this time, the threaded seat 20 drives the slide rod 22 on the support bearing 3 to move on the inner surface of the slide 23. After the support bearing 3 moves to the middle position, the servo motor 82 on the mounting base 81 is started to rotate, thereby driving the drive gear 83 to rotate. The rotation gear 84 and the drive gear 83 are used to rotate. The meshing relationship allows the rotating gear 84 to rotate. Simultaneously, under the threaded connection between the screw 86 and the nut 85, the rotating gear 84 slides inside the mounting base 81, causing the screw 86 to extend and push the push block 7, so that the left bearing 5 and the right bearing 6 move towards each other on the slide rail 4. At this point, the two optical fibers are joined. The rotating frame 14 is then rotated so that the optical fiber clamping foot 15 presses the optical fiber into the positioning block 13, thereby positioning the optical fiber. Then, the two optical fibers are fused together using the fixing frame 16.

[0033] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. Polarization maintaining optical fiber fusion splicer comprising a housing (1), characterized in that, The inside of mounting box (1) is fixedly connected with mounting plate (2), the top of mounting plate (2) is provided with movable support seat (3), the top of support seat (3) is fixedly connected with slide rail (4), the surface of slide rail (4) is slidably connected with left side seat (5) and right side seat (6) respectively, the top of left side seat (5) and right side seat (6) is fixedly connected with mounting bracket (9), the inside of mounting bracket (9) is provided with rotatable rotating mechanism (10), one side of rotating mechanism (10) is fixedly connected with support plate (11), the top of support plate (11) is rotatably connected with pressing plate (12) for pressing optical fiber, the top of left side seat (5) and right side seat (6) is fixedly connected with positioning block (13), the top of positioning block (13) is provided with V-shaped groove for positioning optical fiber, the both sides of the top of mounting box (1) are rotatably connected with rotating frame (14), the bottom of rotating frame (14) is fixedly connected with optical fiber pressing foot (15), the bottom of optical fiber pressing foot (15) is matched with the inner surface of V-shaped groove, The both sides of the bottom of support seat (3) are fixedly connected with slide rod (22), the top of mounting plate (2) is fixedly connected with slide seat (23) matched with the outer surface of slide rod (22). The front of left side seat (5) and the back of right side seat (6) are fixedly connected with advancing stop block (7), the top of support seat (3) and one side of advancing stop block (7) are fixedly connected with advancing mechanism (8).

2. The polarization maintaining fiber fusion splicer of claim 1, wherein, The advancing mechanism (8) comprises mounting seat (81) on support seat (3), one side of mounting seat (81) is fixedly connected with nut (85), the inner surface of nut (85) is threadedly connected with rotatable screw rod (86).

3. The polarization maintaining fiber fusion splicer of claim 2, wherein, The other side of mounting seat (81) is provided with servo motor (82), the output end of servo motor (82) is fixedly connected with driving gear (83), one side of mounting seat (81) and one side of nut (85) are slidably connected with rotatable rotating gear (84), rotating gear (84) is meshedly connected with driving gear (83), one end of screw rod (86) is fixedly connected with the inner surface of rotating gear (84).

4. The polarization maintaining fiber fusion splicer of claim 3, wherein, ​ 5. The polarization maintaining fiber fusion splicer of claim 1, wherein, The bottom of the mounting plate (2) is fixedly connected with a fixing frame (16), one side of the fixing frame (16) is fixedly connected with a driving motor (17), the other side of the fixing frame (16) is provided with a rotatable threaded rod (19) in penetration, the output end of the driving motor (17) is provided with a transmission assembly (18) for driving the fixing frame (16) to rotate, the outer surface of the threaded rod (19) is threadedly connected with a threaded seat (20), the top of the threaded seat (20) is fixedly connected with the bottom of the supporting seat (3), the top of the mounting plate (2) is provided with a groove in penetration, the moving stroke of the threaded seat (20) is matched with the groove, and one side of the mounting plate (2) is fixedly connected with a fixing seat (21) rotatably connected with one end of the threaded rod (19).

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