Hollow optical fiber fusion splicer with displacement cross-fan operation core alignment mechanism

Abstract

The present application relates to the technical field of optical fiber fusion, in particular to a kind of hollow-core optical fiber fusion splicer with variable position cross fan-shaped operation core adjusting mechanism;Including cabinet and the hinge cover of cabinet upper port;The core adjusting mechanism is equipped in the cabinet;The lower presser foot with V-shaped groove at end is moved in position by the core adjusting mechanism;Upper presser foot corresponding with lower presser foot is provided in the inside of cover;The transmission groove is provided in the inside of pedestal in the cabinet;Gear set is transmission connected in the transmission groove;Gear set is driven by driving motor, and is output by eccentric shaft;The present application is lubricated impact to gear set in the process of core adjusting by lubricating assembly, to make gear set more stable in operation after lubrication, on the other hand, the wear of gear set is reduced after the debris on gear set is washed away, the service life of gear set is improved, the service life of core adjusting mechanism is improved, and the overall quality of optical fiber fusion splicer is improved.

Description

Technical Field

[0001] This invention relates to the field of optical fiber fusion splicing technology, specifically to a hollow optical fiber fusion splicer with a variable-position cross-fan-shaped core-aligning mechanism. Background Technology

[0002] A fiber optic fusion splicer is a specialized device for connecting optical fibers. It is mainly used to fuse two optical fibers together to achieve lossless transmission of optical signals. The working principle of a fiber optic fusion splicer is to melt and precisely align the cores of two optical fibers under high temperature conditions, and then fuse them together to enable lossless transmission of optical signals. In the field of fiber optic communication network construction and maintenance, fiber optic fusion splicers are core equipment to ensure the quality of fiber optic connections and are widely used in diverse scenarios such as FTTH home installation, backbone network optical cable repair, and outdoor high-altitude operations.

[0003] The fiber optic fusion splicing process involves first fitting a heat-shrink tubing over one of the optical fibers, stripping the outer sheath, then cutting the stripped fiber. The cut fiber is then placed in the V-groove and placement table of the fiber optic fusion splicer. The clamping plate on the placement table presses down the sheathed portion of the fiber. Next, the control foot presses down the exposed fiber in the V-groove. The windproof cover is closed, and the two fibers to be spliced ​​are aligned using the alignment mechanism. After alignment, discharge splicing is performed. Once spliced, the windproof cover, the pressure foot, and the clamping plate are opened. The welded fiber is removed, and the heat-shrink tubing is moved to the fiber welding position. The fiber welding position and the heat-shrink tubing are then placed into the heat-shrink assembly on the fiber optic fusion splicer for heat shrinking.

[0004] There are currently two technical issues to be resolved:

[0005] a. After prolonged use, the fiber optic fusion splicer's core-aligning mechanism inevitably experiences jamming due to lubricant loss, especially noticeable in the gear assembly section. Jamming affects the stability of the core-aligning mechanism in fiber alignment.

[0006] b. The two heat shrink boxes in the heat shrink assembly are joined together and clamped to the outer wall of the fiber optic strip after the fiber optic splice position and the heat shrink tube is inserted. Since the existing heat shrink assembly does not have an adjustment function during the clamping process of the fiber optic strip, the fixed fiber optic strip and heat shrink tube may not be in the center of the heat shrink cavity in the heat shrink box. This will cause uneven heat shrinking of the heat shrink tube and affect the stability of the fiber optic connection. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention proposes a hollow fiber fusion splicer with a variable-position cross-fan-shaped alignment mechanism. This invention uses a drive motor to drive a sequentially decelerating gear set, which in turn drives an eccentric shaft. This causes the lower pressure seat to be compressed and move along the variable-position cross guide rail, thereby changing the position of the lower pressure foot on the lower pressure seat and achieving precise fiber alignment. During the alignment process, a lubrication assembly lubricates and impacts the gear set. This lubrication makes the alignment mechanism more stable, and the removal of debris from the gear set reduces wear and extends its service life. This overall improvement in the lifespan of the alignment mechanism enhances the overall quality of the fiber fusion splicer.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: A hollow fiber fusion splicer with a variable-position cross-fan-shaped core-adjusting mechanism, comprising a chassis and a cover hinged to the upper port of the chassis; a core-adjusting mechanism is provided inside the chassis; the core-adjusting mechanism moves the lower pressure foot with a V-groove at its end; an upper pressure foot corresponding to the lower pressure foot is provided inside the cover; a transmission groove is provided inside the base of the chassis; a gear set is connected in the transmission groove; the gear set is driven by a drive motor and output by an eccentric shaft; the end of the eccentric shaft contacts the arc-shaped part at the bottom of the lower pressure seat through a bearing; one side of the lower pressure seat is connected to the base through a variable-position cross guide rail, and the other side of the lower pressure seat is slidably connected to a movable seat; the top of the movable seat is fixedly connected to the lower pressure foot; the bottom of the movable seat is fixedly connected to the bottom of the lower pressure seat through an electric push rod; the eccentric shafts are symmetrically distributed on both sides of the lower pressure seat; a lubrication assembly is provided inside the base, which can spray oil at the meshing position of the gear set.

[0009] Preferably, the gear set includes a drive shaft, a first gear, a second gear, a third gear, a transition shaft, a fourth gear, and an eccentric shaft; the drive shaft, the transition shaft, and the eccentric shaft all pass through a transmission groove and are rotatably and sealedly connected to the base; the end of the drive shaft is fixedly connected to the output end of the drive motor; the first gear is fixedly connected to the outer wall of the drive shaft; the second gear and the third gear are fixedly connected to the outer wall of the transition shaft; the second gear meshes with the first gear for transmission; the fourth gear is fixedly connected to the outer wall of the eccentric shaft; the fourth gear meshes with the third gear for transmission; the first gear is smaller than the second gear; the third gear is smaller than the fourth gear.

[0010] Preferably, the displacement cross rail includes a cross-shaped cross frame, a first inclined seat, and a second inclined seat; the cross frame is located between the first inclined seat and the second inclined seat; one side of the first inclined seat is fixedly connected to the base, and the other side is slidably connected to the cross frame; one side of the second inclined seat is slidably connected to the cross frame, and the other side is fixedly connected to the lower pressure seat; the sliding directions of the first inclined seat and the second inclined seat are arranged crosswise.

[0011] Preferably, the lower pressure seat is fixedly connected to the pull rod on the side facing the base and directly below the displacement cross guide rail; the end of the pull rod is rotatably connected to the pull ring; the bottom of the base is fixedly connected to the pull plate; the upper surface of the pull plate is provided with a pull groove along the front-back direction; a pull block is slidably connected in the pull groove; the pull block and the pull ring are connected by a tension spring.

[0012] Preferably, the lubrication assembly includes a lubrication cavity and a lubrication plate; the lubrication cavity is disposed inside the base and is passed through by the drive shaft; the lubrication plate is slidably and sealingly connected to the lubrication cavity, and the lubrication plate and the lubrication cavity are slidably and sealingly connected; the lubrication plate is movably and sealingly connected to the drive shaft through a drive hole; the drive shaft is located on the outer wall of the lubrication cavity and has a corrugated groove with its ends connected in the circumferential direction; a corrugated block is movably and sealingly connected to the corrugated groove; the corrugated block is fixedly connected to the inner wall of the drive hole; a connecting groove is provided between the lubrication cavity and the transmission groove; the connecting groove is aligned with the gear meshing position through a spray hole; the lubrication plate divides the lubrication cavity into a first cavity and a second cavity; both the first cavity and the second cavity are connected to the bottom of the transmission groove through a one-way liquid inlet hole, and both the first cavity and the second cavity are connected to the connecting groove through a one-way liquid outlet hole.

[0013] Preferably, a replacement groove is provided on the inner wall of the transmission groove and below the gear set; a replacement frame is slidably and sealingly connected in the replacement groove; and a filter screen is provided on the inner side of the replacement frame.

[0014] Preferably, the upper surface of the chassis is provided with a heat shrink assembly offset from the cover; the heat shrink assembly includes two heat shrink boxes with heat shrink grooves; the two heat shrink grooves are merged to form a heat shrink cavity; the inner wall of the heat shrink groove is provided with a heating element; the end of the heat shrink groove is provided with a V-shaped opening along the length of the heat shrink box; the V-shaped openings on the two heat shrink boxes are arranged opposite each other; one of the heat shrink boxes has a first movable groove with the V-shaped opening facing inward; the first movable groove is provided with a U-shaped first adjusting seat; the inner side of the first adjusting seat is slidably connected to a first adjusting plate; the first adjusting plate and the inner bottom wall of the first adjusting seat are connected by a first adjusting spring; the other heat shrink box has a second movable groove with the V-shaped opening facing inward; the second movable... The slot position corresponds to the first movable slot position; a U-shaped second adjusting seat is provided in the second movable slot; a second adjusting plate is slidably connected to the inner side of the second adjusting seat; the second adjusting plate and the inner bottom wall of the second adjusting seat are connected by a second adjusting spring; the end of the first adjusting plate near the second adjusting plate is set in a V shape and has a groove; the second adjusting plate is convex in shape and can be inserted into the groove; two bottom slots are provided on the upper surface of the chassis; a bottom block is slidably connected in the bottom slot; the bottom block is fixedly connected to the bottom of the corresponding heat shrink box; the two bottom slots pass through a first threaded rod; the first threaded rod is driven by a first motor; the first threaded rod is threadedly connected to the two bottom blocks; the two ends of the first threaded rod have opposite thread directions.

[0015] Preferably, the depths of the first and second movable grooves increase with distance from the heating element; a first guide groove is provided in the first movable groove; a first guide block is slidably connected in the first guide groove; the side of the first guide block away from the heating element is connected to the inner wall of the first guide groove by a first guide spring; the first guide block is fixedly connected to the first adjusting seat; a second guide groove is provided in the second movable groove; a second guide block is slidably connected in the second guide groove; the side of the second guide block away from the heating element is connected to the inner wall of the second guide groove by a second guide spring; the second guide block is fixedly connected to the second adjusting seat.

[0016] Preferably, one of the heat shrink tubs has a first heating groove along its length on its inner wall, and the other heat shrink tub has a second heating groove along its length on its inner wall. Two first heating blocks are slidably connected in the first heating groove. The first heating blocks are fixedly connected to a first half-ring. The two first heating blocks are connected to the inner wall of the first heating groove by a first heating spring on their opposite sides. Two second heating blocks are slidably connected in the second heating groove. The second heating blocks are fixedly connected to a second half-ring corresponding to the first half-ring. The first and second half-rings are electrically heated. A recess is provided at the contact position between the first and second half-rings. A protrusion is provided at the contact position between the second and first half-rings. The protrusion can be inserted into the recess. A second threaded rod passes through the second heating groove. The threads at both ends of the second threaded rod are arranged in opposite directions. The second threaded rod is threadedly connected to the second heating blocks. The second threaded rod is driven by a second motor.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. This invention uses a drive motor to drive a gear set that decelerates sequentially, which in turn drives an eccentric shaft. This causes the lower pressure seat to be compressed and move along a displacement cross guide rail, thereby changing the position of the lower pressure foot on the lower pressure seat and achieving precise fiber alignment. During the alignment process, a lubrication assembly lubricates and impacts the gear set. This lubrication makes the alignment mechanism more stable, and the removal of debris from the gear set reduces wear and extends its service life. This, in turn, improves the overall quality of the fiber optic fusion splicer.

[0019] 2. This invention guides the optical fiber to the center position of the heat-shrinkable cavity through the V-shaped end of the first adjusting plate and the pressing fit of the second adjusting plate. This ensures that the distance between the heat-shrinkable tube on the optical fiber and the entire ring position is the same, resulting in uniform heat shrinkage of the heat-shrinkable tube on the optical fiber, improving the heat shrinkage effect, and thus enhancing the optical fiber splicing effect. In addition, the cooperation of the first and second guiding blocks ensures that the optical fiber is tightened before heat shrinkage, preventing the optical fiber from bending during the heat shrinkage process and affecting the heat shrinkage effect, making the optical fiber heat shrinkage smoother. Furthermore, the heat shrinkable tube is heat-shrinked sequentially from the middle to the end, thus maximizing the expulsion of residual gas inside the heat shrinkable tube and preventing residual gas from affecting the heat shrinkage effect and optical fiber splicing performance. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a perspective view of Embodiment 1 of the present invention;

[0022] Figure 2 This is a perspective view of the core-adjusting mechanism of the present invention;

[0023] Figure 3 This is a perspective view of the gear assembly in this invention;

[0024] Figure 4 This is a diagram showing the position of the pull rod in this invention;

[0025] Figure 5 This is a perspective view of the displacement cross guide rail in this invention;

[0026] Figure 6 This is a perspective view of the cross rack in this invention;

[0027] Figure 7 This is a three-dimensional view of the eccentric shaft in this invention;

[0028] Figure 8 This is a cross-sectional view of the base in this invention;

[0029] Figure 9 yes Figure 8 Enlarged view of point A in the middle;

[0030] Figure 10 yes Figure 8 Enlarged view of point B in the middle;

[0031] Figure 11 This is a diagram showing the location of the unidirectional liquid inlet in this invention;

[0032] Figure 12 This is a perspective view of Embodiment 2 of the present invention;

[0033] Figure 13 This is a structural diagram of the internal parts of the heat shrink box in this invention;

[0034] Figure 14 This is a perspective view of the first and second adjustment seats in this invention;

[0035] Figure 15 This is a cross-sectional view of the bottom groove in this invention;

[0036] Figure 16 This is a cross-sectional view of the first movable groove and the second movable groove in this invention.

[0037] In the diagram: 1. Chassis; 11. Bottom groove; 12. Bottom block; 13. First threaded rod; 14. First motor; 2. Cover; 3. Core adjusting mechanism; 31. Lower pressure foot; 32. Gear set; 32. Drive shaft; 321. First gear; 322. Second gear; 323. Third gear; 324. Transition shaft; 325. Fourth gear; 326. Corrugated groove; 327. Drive motor; 33. Eccentric shaft; 34. Bearing; 341. Lower pressure seat; 35. Arc-shaped part; 351. Pull rod; 352. Pull ring; 353. Tension spring; 354. Displacement cross guide rail; 36. Cross bracket; 361. First inclined seat; 362. Second inclined seat; 363. Movable seat; 37. Electric push rod; 371. Base; 4. Transmission groove; 41. Pull plate; 42. Pull groove; 421. Pull block; 422. Lubrication chamber; 43. One-way liquid inlet; 433. One-way liquid outlet; 434. Lubrication plate; 44. 441, drive hole, 442, corrugated block, 45, spray hole, 451, replacement slot, 46, replacement frame, 462, filter screen, 5, heat shrink box, 50, second guide spring, 51, heat shrink groove, 511, 512, V-shaped opening, 53, 54, 55, 56, 57, 58, 59, 6, 6, 7, 71, 72, 8, 8, 81, 82, 83, 9, 9, 91, 92, 93, 94, 95, 93, 94. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0039] like Figures 1 to 16 As shown, the present invention includes the following embodiments:

[0040] Example 1: A hollow fiber fusion splicer with a displacement cross-fan-shaped core-aligning mechanism includes a chassis 1 and a cover 2 hinged to the upper port of the chassis 1; the chassis 1 is provided with a core-aligning mechanism 3; the core-aligning mechanism 3 moves the lower pressure foot 31 with a V-groove at its end; the inner side of the cover 2 is provided with an upper pressure foot corresponding to the lower pressure foot 31; a transmission groove 41 is provided inside the base 4 inside the chassis 1; a gear set 32 ​​is connected to the transmission groove 41; the gear set 32 ​​is driven by a drive motor 33 and output by an eccentric shaft 34; The end of the eccentric shaft 34 contacts the arc-shaped portion 351 at the bottom of the lower pressure seat 35 via a bearing 341; one side of the lower pressure seat 35 is connected to the base 4 via a displacement cross guide rail 36, and the other side of the lower pressure seat 35 is slidably connected to the movable seat 37; the top of the movable seat 37 is fixedly connected to the lower pressure foot 31; the bottom of the movable seat 37 is fixedly connected to the bottom of the lower pressure seat 35 via an electric push rod 371; the eccentric shaft 34 is symmetrically distributed on both sides of the lower pressure seat 35; the base 4 is provided with a lubrication assembly, which can spray oil at the meshing position of the gear set 32.

[0041] In this embodiment, the gear set 32 ​​includes a drive shaft 321, a first gear 322, a second gear 323, a third gear 324, a transition shaft 325, a fourth gear 326, and an eccentric shaft 34. The drive shaft 321, the transition shaft 325, and the eccentric shaft 34 all pass through the transmission groove 41 and are rotatably and sealingly connected to the base 4. The end of the drive shaft 321 is fixedly connected to the output end of the drive motor 33. The first gear 322 is fixedly connected to the outer wall of the drive shaft 321. The second gear 323 and the third gear 324 are fixedly connected to the outer wall of the transition shaft 325. The second gear 323 meshes with the first gear 322 for transmission. The fourth gear 326 is fixedly connected to the outer wall of the eccentric shaft 34 for transmission. The fourth gear 326 meshes with the third gear 324 for transmission. The first gear 322 is smaller than the second gear 323. The third gear 324 is smaller than the fourth gear 326.

[0042] In this embodiment, the displacement cross guide rail 36 includes a cross-shaped cross frame 361, a first inclined seat 362, and a second inclined seat 363; the cross frame 361 is located between the first inclined seat 362 and the second inclined seat 363; one side of the first inclined seat 362 is fixedly connected to the base 4, and the other side is slidably connected to the cross frame 361; one side of the second inclined seat 363 is slidably connected to the cross frame 361, and the other side is fixedly connected to the lower pressure seat 35; the sliding directions of the first inclined seat 362 and the second inclined seat 363 are arranged crosswise.

[0043] In this embodiment, the lower pressure seat 35 faces the base 4 and is located directly below the displacement cross guide rail 36, and is fixedly connected to the pull rod 352; the end of the pull rod 352 is rotatably connected to the pull ring 353; the bottom of the base 4 is fixedly connected to the pull plate 42; the upper surface of the pull plate 42 is provided with a pull groove 421 along the front-back direction; the pull block 422 is slidably connected in the pull groove 421; the pull block 422 and the pull ring 353 are connected by a tension spring 354.

[0044] In this embodiment, the lubrication assembly includes a lubrication cavity 43 and a lubrication plate 44; the lubrication cavity 43 is disposed inside the base 4 and is passed through by the drive shaft 321; the lubrication plate 44 is slidably and sealingly connected to the lubrication cavity 43, and the lubrication plate 44 and the lubrication cavity 43 are slidably and sealingly connected; the lubrication plate 44 is movably and sealingly connected to the drive shaft 321 through a drive hole 441; the drive shaft 321 is located on the outer wall of the lubrication cavity 43 and has a corrugated groove 327 that is connected end to end along the circumferential direction; the corrugated groove 327 contains... A corrugated block 442 is connected to a movable seal; the corrugated block 442 is fixed to the inner wall of the drive hole 441; a connecting groove 45 is provided between the lubrication cavity 43 and the transmission groove 41; the connecting groove 45 is aligned with the meshing position of the gear set 32 ​​through the spray hole 451; the lubrication plate 44 divides the lubrication cavity 43 into a first cavity and a second cavity; both the first cavity and the second cavity are connected to the bottom of the transmission groove 41 through a one-way liquid inlet hole 433, and both the first cavity and the second cavity are connected to the connecting groove 45 through a one-way liquid outlet hole 434.

[0045] In this embodiment, a replacement groove 46 is provided on the inner wall of the transmission groove 41 and below the gear set 32; a replacement frame 461 is slidably and sealingly connected in the replacement groove 46; a filter screen 462 is provided on the inner side of the replacement frame 461.

[0046] Before fusion splicing, the fiber end to be spliced ​​is stripped. The stripped fiber is then cut using a fiber optic cleaver, resulting in a flat end face for easier splicing. The cover 2 is opened, and as it flips upwards, the upper pressure foot (not shown) lifts upwards, disengaging from the V-groove. The cut fiber is then placed on the V-groove and placement platform (not shown). A clamping plate on the placement platform presses the stripped portion of the fiber firmly. The cover 2 is then flipped down to close, causing the upper pressure foot to elastically press against the fiber surface within the V-groove. The core-aligning mechanism 3 then operates, with two drive motors 33 rotating their respective connected drive shafts 321. During rotation, the drive shafts 321... The first gear 322 rotates, which in turn drives the meshing second gear 323 to rotate. The second gear 323 then drives the transition shaft 325 and the third gear 324 to rotate synchronously. The third gear 324 then drives the meshing fourth gear 326 to rotate, which in turn drives the eccentric shaft 34 to rotate. Because the first gear 322 is smaller than the second gear 323, and the third gear 324 is smaller than the fourth gear 326, the rotation of the drive motor 33 more precisely controls the rotation of the eccentric shaft 34 through progressive speed reduction. This results in more precise rotation of the eccentric shaft 34. During the rotation of the eccentric shaft 34, the bearing 341 contacts the arc-shaped portion 351 at the bottom of the lower pressure seat 35. The eccentric rotation of the eccentric shaft 34 provides a thrust to the top arc-shaped portion 351 of the lower pressure seat 35. With the displacement cross guide rail 36, the cross frame 361 can move independently along the sliding directions of the first inclined seat 362 and the second inclined seat 363. The first inclined seat 362 and the second inclined seat 363 are cross-arranged, so the lower pressure seat 35 can move on a plane under the pressure of the symmetrically arranged eccentric shafts 34. A pull rod 352 is fixedly connected to the lower pressure seat 35, and a pull ring 353 is sleeved on the pull rod 352. The pull ring 353 is connected to the pull block 422 on the pull plate 42 by a tension spring 354. The pull block 422 can slide within the pull groove 421. The bottom specification of the pull block 422 is larger than the top specification, so the pull block 422 will not detach from the pull groove. 421. The tension spring 354 provides a downward pulling force to the upper pressure seat, and with the cooperation of the two eccentric shafts 34, the upper pressure seat can shift in the front-back and up-down directions, changing its position. This change in the position of the upper pressure seat will cause the lower pressure foot 31 on the movable seat 37 to change its position. The extension and retraction of the electric push rod 371 will cause the movable seat 37 to move up and down along the upper pressure seat, further changing the position of the lower pressure foot 31. In this way, the upper pressure foot will drive the optical fiber to perform core alignment. The visual feedback unit (not shown in the figure) is used to visually acquire and provide feedback on the contact position of the two optical fibers. The fiber alignment mechanism 3 is used to align the optical fibers, so that the fiber alignment process is completed. Then, the optical fiber fusion splicer is controlled to splice the optical fibers. After the splice is completed, the windproof cover can be opened to remove the spliced ​​optical fiber.This fiber optic splicing process is repeated. Each rotation of the drive motor 33 drives the drive shaft 321, which in turn moves the corrugated groove 327 on the outer wall. This movement of the corrugated groove 327 causes the corrugated block 442 to move within it. The block-shaped corrugated block 442 allows for sealing and connection within the corrugated groove 327. The rotation of the drive shaft 321, along with the cooperation of the corrugated groove 327 and the corrugated block 442, causes the lubricating plate 44 to slide back and forth within the lubrication cavity 43. Whether the drive shaft 321 rotates clockwise or counterclockwise, it consistently drives the lubricating plate 44 to slide back and forth within the lubrication cavity 43. As the space within the first chamber expands, a negative pressure is created. Under this negative pressure, the lubricating fluid at the bottom of the transmission groove 41 enters the first chamber through the corresponding one-way inlet hole 433. If the space within the first chamber decreases, the lubricating fluid in the first chamber is pressurized and discharged into the connecting groove 45 through the corresponding one-way outlet hole 434. Similarly, as the space within the second chamber expands, a negative pressure is created. Under this negative pressure, the lubricating fluid at the bottom of the transmission groove 41 enters the second chamber through the corresponding one-way inlet hole 433. If the space within the second chamber decreases, the lubricating fluid in the second chamber is pressurized and discharged into the connecting groove 45 through the corresponding one-way outlet hole 434. As the liquid increases, it will be discharged through the spray hole 451, which faces the meshing position of the gear set 32. Therefore, it can both flush away debris at the meshing position and lubricate the gear set 32. Because the corrugated groove 327 is connected end-to-end, regardless of how the drive shaft 321 rotates, it can drive the lubrication plate 44 to slide within the lubrication groove. No matter which direction the lubrication plate 44 slides within the lubrication cavity 43, the volume of both the first and second cavities will decrease. This allows lubricant to continuously enter the connecting groove 45, and the spray hole 451 will also discharge liquid as the liquid in the connecting groove 45 increases. If the drive motor 33 stops... When the drive shaft 321 stops rotating, the spray nozzle 451 also stops spraying fluid. Thus, the lubrication assembly operates in tandem with the adjusting mechanism 3, and stops operating when the adjusting mechanism 3 stops. This achieves lubrication while also saving energy. Debris on the gear set 32 ​​drips down to the bottom of the transmission groove 41 under the impact of the lubricating fluid. Since a replacement frame 461 and a filter screen 462 are located on the inner wall of the transmission groove 41 below the gear set 32, the filter screen 462 can filter and collect the debris in the lubricating fluid. Operators only need to periodically remove the replacement frame 461 from the replacement groove 46 to empty the debris, and the lubricating fluid can also be replaced periodically.

[0047] This invention uses a drive motor 33 to drive a gear set 32 ​​that decelerates sequentially, which in turn drives an eccentric shaft 34. This causes the lower pressure seat 35 to be compressed and move along the displacement cross guide rail 36, thereby changing the position of the lower pressure foot 31 on the lower pressure seat 35 and achieving precise fiber alignment. During the alignment process, the gear set 32 ​​is lubricated by a lubrication component. This makes the alignment mechanism 3 run more stably after lubrication, and also removes debris from the gear set 32, reducing wear and extending its service life. This improves the overall quality of the fiber optic fusion splicer.

[0048] Example 2: The upper surface of the chassis 1 is provided with a heat shrink assembly that is offset from the cover 2; the heat shrink assembly includes two heat shrink boxes 5 with heat shrink grooves 51; the two heat shrink grooves 51 are combined to form a heat shrink cavity; the inner wall of the heat shrink groove 51 is provided with a heating element; the end of the heat shrink groove 51 is provided with a V-shaped opening 52 through the length of the heat shrink box 5; the V-shaped openings 52 on the two heat shrink boxes 5 are arranged opposite each other; a first movable groove 53 is provided inwardly on the V-shaped opening 52 of one of the heat shrink boxes 5; a U-shaped first adjusting seat 6 is provided in the first movable groove 53; a first adjusting plate 61 is slidably connected to the inner side of the first adjusting seat 6; the first adjusting plate 61 and the inner bottom wall of the first adjusting seat 6 are connected by a first adjusting spring 62; a second movable groove 54 is provided inwardly on the V-shaped opening 52 of the other heat shrink box 5; the second movable groove 54 The position corresponds to the position of the first movable slot 53; the second movable slot 54 is provided with a U-shaped second adjusting seat 7; the second adjusting plate 71 is slidably connected to the inner side of the second adjusting seat 7; the second adjusting plate 71 and the inner bottom wall of the second adjusting seat 7 are connected by a second adjusting spring 72; the first adjusting plate 61 is V-shaped near the second adjusting plate 71 and has a groove; the second adjusting plate 71 is convex in shape and can be inserted into the groove; the upper surface of the chassis 1 is provided with two bottom slots 11; the bottom block 12 is slidably connected in the bottom slot 11; the bottom block 12 is fixedly connected to the bottom of the corresponding heat shrink box 5; the two bottom slots 11 pass through the first threaded rod 13; the first threaded rod 13 is driven by the first motor 14; the first threaded rod 13 is threadedly connected to the two bottom blocks 12; the two threads of the first threaded rod 13 are arranged in opposite directions.

[0049] In this embodiment, the depths of the first movable groove 53 and the second movable groove 54 increase as they move away from the heating element; a first guide groove 55 is provided in the first movable groove 53; a first guide block 56 is slidably connected in the first guide groove 55; the side of the first guide block 56 away from the heating element is connected to the inner wall of the first guide groove 55 by a first guide spring 57; the first guide block 56 is fixedly connected to the first adjusting seat 6; a second guide groove 58 is provided in the second movable groove 54; a second guide block 59 is slidably connected in the second guide groove 58; the side of the second guide block 59 away from the heating element is connected to the inner wall of the second guide groove 58 by a second guide spring 50; the second guide block 59 is fixedly connected to the second adjusting seat 7.

[0050] In this embodiment, one of the heat shrinkable grooves 51 has a first heating groove 511 along its length on its inner wall, and the other heat shrinkable groove 51 has a second heating groove 512 along its length on its inner wall. Two first heating blocks 8 are slidably connected inside the first heating groove 511. The first heating blocks 8 are fixedly connected to a first semi-ring 81. The two first heating blocks 8 are connected to the inner wall of the first heating groove 511 by a first heating spring 82 on their opposite sides. Two second heating blocks 9 are slidably connected inside the second heating groove 512. The second heating blocks 9 are fixedly connected to a second semi-ring 91 corresponding to the first semi-ring 81. The first half-ring 81 and the second half-ring 91 are electrically heated; a recess 83 is provided at the contact position between the first half-ring 81 and the second half-ring 91; a protrusion 92 is provided at the contact position between the second half-ring 91 and the first half-ring 81; the protrusion 92 can be inserted into the recess 83; a second threaded rod 93 passes through the second heating groove 512; the threads at both ends of the second threaded rod 93 are arranged in opposite directions; the second threaded rod 93 is threadedly connected to the second heating block 9; the second threaded rod 93 is driven by a second motor 94; the first half-ring 81 and the second half-ring 91 are combined to form a complete ring; the complete ring is a heating element.

[0051] Before stripping the optical fiber, heat shrink tubing is first applied. After the optical fiber splicing is completed, the heat shrink tubing on the optical fiber is moved to the splicing position, where it covers the splicing area. Then, the first motor 14 is activated, driving the first threaded rod 13. During rotation, the first threaded rod 13 causes the base block 12 to slide within the bottom groove 11. Because the two threads on the first threaded rod 13 have opposite directions, its rotation can move the two base blocks 12 closer together or further apart. As the base blocks 12 move further apart, the two heat shrink boxes 5 move further apart, opening the heat shrink cavity. The two heat shrink grooves 51 combine to form the heat shrink cavity. The optical fiber with the heat shrink tubing is then placed between the two heat shrink boxes 5, moving the fiber to the V-shaped opening 52. Positioning is then controlled by the first threaded rod 13, which drives the two bottom blocks 12 to move closer together. The two heat shrink boxes 5 will move closer together, and the second adjusting plate 71 will press the outer wall of the fiber optic ribbon into the V-shaped end of the first adjusting plate 61, achieving elastic compression of the outer wall of the fiber optic ribbon. This allows the fiber to be centered in the heat shrink cavity. As the two heat shrink boxes 5 continue to move closer, the first adjusting plate 61 will move closer to the inner bottom wall of the first adjusting seat 6, and the second adjusting plate 71 will move closer to the inner bottom wall of the second adjusting seat 7. However, the first adjusting plate 61 and the inner bottom wall of the first adjusting seat 6 are connected by the first adjusting spring 62, and the second adjusting plate 71 and the inner bottom wall of the second adjusting seat 7 are connected by the second adjusting spring 72. Therefore, under the force transmission of the first adjusting spring 62 and the second adjusting spring 72, the first guide... Guide block 56 slides along the first guide groove 55 against the first guide spring 57, and second guide block 59 slides along the second guide groove 58 against the second guide spring 50. This causes the first guide block 56 and the second guide block 59 to simultaneously move away from the heating element, and the first adjusting seat 6 and the second adjusting seat 7 to simultaneously move away from the heating element. The first adjusting plate 61 and the second adjusting plate 71 elastically clamp the outer wall of the fiber optic ribbon, suitable for clamping requirements of fiber optic ribbons of different diameters. After the outer wall of the fiber optic ribbon is elastically pressed away from the heating element by the first adjusting plate 61 and the second adjusting plate 71, the portion of the fiber located in the heat-shrink cavity is straightened. This prevents bending of the fused portion of the heat-shrinked fiber, resulting in a straighter fiber being wrapped, and improving the centered fiber optic cable. The heat shrink tubing ensures uniform heat shrinkage. Note that because the friction between the first adjusting plate 61, the second adjusting plate 71, and the outer wall of the fiber optic sheath is less than the tensile strength of the fiber, the fiber will only be straightened and will not break, thus preventing damage. After the two heat shrink boxes 5 are combined, the protrusion 92 at the end of the second half-ring 91 will engage with the recess 83 of the first half-ring 81, connecting the first half-ring 81 and the second half-ring 91 to form a complete ring. When the first half-ring 81 and the second half-ring 91 come into contact, they are energized and heated. The first half-ring 81 and the second half-ring 91 are electrically connected to a power source. The specific electrical connection method is existing technology and will not be elaborated further. For example, the inner wall of the first heating groove 511 is provided with a positive power supply, and the second heating groove 512 is provided with a negative power supply.The current flows through the first heating block 8, the first half-ring 81, the second half-ring 91, and the second heating block 9. The contact points between the two first heating blocks 8, the two first half-rings 81, the two second half-rings 91, and the two second heating blocks 9 are insulated. Alternatively, the heating element may have its own heat source; the heating element only needs to be able to heat to meet the requirements. The second motor 94 drives the second threaded rod 93 to rotate. The threads at both ends of the second threaded rod 93 have opposite directions. Therefore, during the rotation of the second threaded rod 93, the two second heating blocks 9 will move away from each other, and the two rings will move away from each other to generate heat. This ensures that the heat shrink tubing shrinks first in the middle and then at the ends, thus achieving heat shrinkage. Excess gas inside the tube can be discharged during the heat shrinking process, preventing gas residue from affecting the fiber protection effect and fiber performance; after heat shrinking, the heat shrink tubing wraps and protects the fiber splice location; the second motor 94 drives the second threaded rod 93 to move the entire ring closer together and into contact, while the first motor 14 moves the two bottom blocks 12 away from each other, causing the two heat shrink boxes 5 to move away from each other, and the first adjusting plate 61 and the second adjusting plate 71 to move away from the fiber, releasing the pressure on the outer wall of the fiber sheath; the first guide spring 57 pushes the first guide block 56 back along the first guide groove 55, and the second guide spring 50 pushes the second guide block 59 back along the second guide groove 58.

[0052] This invention guides the optical fiber to the center of the heat-shrinkable cavity through the V-shaped end of the first adjusting plate 61 and the pressing fit of the second adjusting plate 71. This ensures that the distance between the heat-shrinkable tube on the optical fiber and the entire ring is the same, resulting in uniform heat shrinkage of the heat-shrinkable tube on the optical fiber, improving the heat shrinkage effect, and thus enhancing the optical fiber splicing effect. In addition, the cooperation of the first guide block 56 and the second guide block 59 ensures that the optical fiber is tightened before heat shrinkage, preventing the optical fiber from bending during the heat shrinkage process and affecting the heat shrinkage effect, making the optical fiber heat shrinkage smoother. Furthermore, the heat shrinkable tube is heat-shrinked sequentially from the middle to the end, thus maximizing the expulsion of residual gas inside the heat shrinkable tube and preventing residual gas from affecting the heat shrinkage effect and the optical fiber splicing performance.

[0053] Embodiment 1 and Embodiment 2 in this invention are set independently. The fiber optic fusion splicer in this invention can be equipped with Embodiment 2, or the fiber optic fusion splicer can include Embodiment 1 alone.

[0054] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0055] The foregoing has shown and described 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 to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow fiber fusion splicer with a displacement cross-fan-shaped alignment mechanism, comprising a chassis and a cover hinged to the upper port of the chassis; the chassis contains an alignment mechanism; the alignment mechanism moves the lower pressure foot with a V-groove at its end; the cover has an upper pressure foot corresponding to the lower pressure foot on its inner side; characterized in that: The base inside the chassis has a transmission groove; a gear set is connected to the transmission groove; the gear set is driven by a drive motor and output by an eccentric shaft; the end of the eccentric shaft contacts the arc-shaped part at the bottom of the lower pressure seat through a bearing; one side of the lower pressure seat is connected to the base through a displacement cross guide rail, and the other side of the lower pressure seat is slidably connected to a movable seat; the top of the movable seat is fixedly connected to a lower pressure foot; the bottom of the movable seat is fixedly connected to the bottom of the lower pressure seat through an electric push rod; the eccentric shafts are symmetrically distributed on both sides of the lower pressure seat; a lubrication assembly is provided inside the base, which can spray oil at the meshing position of the gear set; The gear set includes a drive shaft, a first gear, a second gear, a third gear, a transition shaft, a fourth gear, and an eccentric shaft; the drive shaft, transition shaft, and eccentric shaft all pass through a transmission groove and are rotatably and sealedly connected to the base; the end of the drive shaft is fixedly connected to the output end of the drive motor; the first gear is fixedly connected to the outer wall of the drive shaft; the second and third gears are fixedly connected to the outer wall of the transition shaft; the second gear meshes with the first gear for transmission; the fourth gear is fixedly connected to the outer wall of the eccentric shaft; the fourth gear meshes with the third gear for transmission; the first gear is smaller than the second gear; the third gear is smaller than the fourth gear. The displacement cross rail includes a cross-shaped cross frame, a first inclined seat, and a second inclined seat; the cross frame is located between the first inclined seat and the second inclined seat; one side of the first inclined seat is fixedly connected to the base, and the other side is slidably connected to the cross frame; one side of the second inclined seat is slidably connected to the cross frame, and the other side is fixedly connected to the lower pressure seat; the sliding directions of the first inclined seat and the second inclined seat are arranged crosswise. The lubrication assembly includes a lubrication cavity and a lubrication plate; the lubrication cavity is disposed inside the base and is passed through by the drive shaft; the lubrication plate is slidably and sealingly connected to the lubrication cavity; the lubrication plate is movably and sealingly connected to the drive shaft through a drive hole; the drive shaft is located on the outer wall of the lubrication cavity and has a corrugated groove that is connected end to end along the circumference; a corrugated block is movably and sealingly connected inside the corrugated groove; the corrugated block is fixedly connected to the inner wall of the drive hole; a connecting groove is provided between the lubrication cavity and the transmission groove; the connecting groove is aligned with the gear meshing position through a spray hole; the lubrication plate divides the lubrication cavity into a first cavity and a second cavity; both the first cavity and the second cavity are connected to the bottom of the transmission groove through a one-way liquid inlet hole, and both the first cavity and the second cavity are connected to the connecting groove through a one-way liquid outlet hole.

2. A hollow fiber fusion splicer with a variable-position cross-sectoral core-aligning mechanism according to claim 1, characterized in that: The lower pressure seat is fixedly connected to the pull rod on the side facing the base and directly below the displacement cross guide rail; the end of the pull rod is rotatably connected to the pull ring; the bottom of the base is fixedly connected to the pull plate; the upper surface of the pull plate is provided with a pull groove along the front-back direction; the pull block is slidably connected in the pull groove; the pull block and the pull ring are connected by a tension spring.

3. A hollow fiber fusion splicer with a variable-position cross-sectoral core-aligning mechanism according to claim 1, characterized in that: A replacement groove is provided on the inner wall of the transmission groove and below the gear set; a replacement frame is slidably and sealed in the replacement groove; a filter screen is provided on the inner side of the replacement frame.

4. A hollow fiber fusion splicer with a variable-position cross-sectoral core-aligning mechanism according to claim 1, characterized in that: The upper surface of the chassis is provided with a heat shrink assembly offset from the cover; the heat shrink assembly includes two heat shrink boxes with heat shrink grooves; the two heat shrink grooves are combined to form a heat shrink cavity; the inner wall of the heat shrink groove is provided with a heating element; the end of the heat shrink groove is provided with a V-shaped opening along the length of the heat shrink box; the V-shaped openings on the two heat shrink boxes are arranged opposite each other; one of the heat shrink boxes has a first movable groove with the V-shaped opening facing inward; the first movable groove is provided with a U-shaped first adjusting seat; the inner side of the first adjusting seat is slidably connected to a first adjusting plate; the first adjusting plate and the inner bottom wall of the first adjusting seat are connected by a first adjusting spring; the other heat shrink box has a second movable groove with the V-shaped opening facing inward; the second movable groove... The first movable slot is positioned corresponding to the first movable slot; the second movable slot is provided with a U-shaped second adjusting seat; the second adjusting seat is slidably connected to the inner side of the second adjusting seat; the second adjusting plate is connected to the inner bottom wall of the second adjusting seat by a second adjusting spring; the end of the first adjusting plate near the second adjusting plate is V-shaped and has a groove; the second adjusting plate is convex in shape and can fit into the groove; the upper surface of the chassis is provided with two bottom grooves; the bottom blocks are slidably connected to the bottom of the corresponding heat shrink box; the two bottom grooves pass through a first threaded rod; the first threaded rod is driven by a first motor; the first threaded rod is threadedly connected to the two bottom blocks; the two ends of the first threaded rod have opposite thread directions.

5. A hollow fiber fusion splicer with a displacement cross-sectoral core-aligning mechanism according to claim 4, characterized in that: The depths of the first and second movable grooves increase as they move away from the heating element; a first guide groove is provided within the first movable groove; a first guide block is slidably connected within the first guide groove; the side of the first guide block away from the heating element is connected to the inner wall of the first guide groove via a first guide spring; the first guide block is fixedly connected to a first adjusting seat; a second guide groove is provided within the second movable groove; a second guide block is slidably connected within the second guide groove; the side of the second guide block away from the heating element is connected to the inner wall of the second guide groove via a second guide spring; the second guide block is fixedly connected to a second adjusting seat.

6. A hollow fiber fusion splicer with a displacement cross-sectoral core-aligning mechanism according to claim 4, characterized in that: One of the heat shrink tubs has a first heating groove along its length on its inner wall, and the other heat shrink tub has a second heating groove along its length on its inner wall. Two first heating blocks are slidably connected in the first heating groove. The first heating blocks are fixedly connected to a first half-ring. The two first heating blocks are connected to the inner wall of the first heating groove by a first heating spring on their opposite sides. Two second heating blocks are slidably connected in the second heating groove. The second heating blocks are fixedly connected to a second half-ring corresponding to the first half-ring. The first and second half-rings are electrically heated. A recess is provided at the contact position between the first and second half-rings. A protrusion is provided at the contact position between the second and first half-rings. The protrusion can be inserted into the recess. A second threaded rod passes through the second heating groove. The threads at both ends of the second threaded rod are arranged in opposite directions. The second threaded rod is threadedly connected to the second heating blocks. The second threaded rod is driven by a second motor.

Images