Manufacturing method and manufacturing device for bending-resistant special optical fiber

Abstract

The invention relates to the technical field of optical fiber manufacturing equipment, and provides a bending-resistant special optical fiber manufacturing method which comprises the steps that two sections of optical fibers are positioned and installed in a staggered mode, and the axes of the two sections of optical fibers are mutually symmetrical based on the axis longitudinal face of an axis type base; after the two sections of optical fibers are fixed, the two sections of optical fibers are cut at the same time through a cutter, and after the optical fibers are separated from the cut parts, the distance between the two sliding units is adjusted, and the adsorption cotton is made to descend to the end face area of the two optical fibers; the rotating speed is slowed down by reducing the driving force of the driving motor, so that the adsorption cotton cleans the end faces of the two sections of optical fibers at the same time. The optical fiber cutting and melting device can continuously cut and melt optical fibers, the optical fibers do not need to be positioned and installed repeatedly, the end faces and the outer surfaces of the optical fibers can be cleaned at the first time after cutting, and the quality problem caused by residual impurities is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber manufacturing equipment, and in particular to a method and a manufacturing device for a special bending-resistant optical fiber. Background Art

[0002] Optical fiber, also known as optical fiber, is widely used in the fields of communication and data transmission, and is an important part of modern information technology. In the manufacturing process of optical fiber, melting is one of the indispensable and important processes. By heating and precisely aligning the end faces of two optical fibers, they are fused into a continuous and seamless optical fiber connection point. This connection method uses high temperature to melt the end faces of the optical fibers, and then through precise operation and control, it ensures that the two optical fibers can be smoothly fused together to form a low-loss, low-reflection, high-transmission efficiency, and reliable and stable optical signal transmission connection point, so as to produce different types of optical fibers such as bend-resistant special optical fibers to meet the needs of use in different fields.

[0003] After searching, the Chinese invention patent with the existing publication number CN118091841B discloses a fusion connector for optical fiber manufacturing, including a base plate, a controller, a cutter and a fuser; it also includes a column one, a threaded sleeve, a column two, a screw one, a drawing die and a drawing assembly, the column one is installed on the base plate, the threaded sleeve is concentrically installed on the left end of the column one, the column two is concentrically provided with a screw one, the left end of the screw one passes through the through hole of the column one and is rotatably screwed with the threaded sleeve, etc.; it has the technical effect of reducing and stretching the larger diameter accumulation at the interface by a plate drawing process, thereby reshaping the interface of the two optical fibers, and compared with the prior art, it is not necessary to align the ends of the two optical fibers with high precision, simplifying the operation of aligning the ends of the two optical fibers, shortening the time consumption, and improving the work efficiency;

[0004] However, the device still has the following shortcomings when it is actually implemented:

[0005] 1. Before the optical fiber is melted, both ends of the optical fiber need to be cut. However, tiny debris or dust will be generated during the cutting process. Once attached to the end face of the optical fiber, it will cause light scattering and reflection during welding, resulting in a weakening of the intensity of the optical signal, thereby increasing the welding loss and even seriously affecting the transmission quality of the optical signal.

[0006] 2. When cutting optical fibers, the optical fibers need to be positioned and installed in the fixtures. However, the one-way cutting method plus the subsequent melting process requires four positioning and installation operations, which results in a longer optical fiber manufacturing cycle. Multiple positioning operations are not only inefficient, but also prone to errors that affect the cutting and melting quality.

[0007] In order to solve the above problems, the present application proposes a method for manufacturing a special bending-resistant optical fiber and a manufacturing device thereof. Summary of the invention

[0008] The object of the present invention is to provide a method and a device for manufacturing a bending-resistant special optical fiber, which has the effects of short manufacturing cycle and high melting quality.

[0009] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0010] A method for manufacturing a bending-resistant special optical fiber, comprising:

[0011] The two sections of optical fiber are installed in a staggered manner, and the axes of the two sections of optical fiber are symmetrical to each other based on the longitudinal plane of the axis of the shaft seat;

[0012] After fixing the two sections of optical fiber, the two sections of optical fiber are cut simultaneously by a cutter, and after the optical fiber and the cut section are separated, the distance between the two sliding units is adjusted, and the adsorption cotton is lowered to the end face area of ​​the two optical fibers;

[0013] By reducing the driving force of the active motor to slow down the rotation speed, the adsorption cotton can clean the end faces of the two optical fibers at the same time;

[0014] Then, the distance between the sliding units is adjusted so that the two sections of optical fiber exert an extrusion force on the adsorbent cotton. At this time, the adsorbent cotton covers the exposed part of the adjacent end face of the optical fiber to form a secondary cleaning.

[0015] Switch the working areas of the melting unit and the cutting unit through the connection unit, and reverse the two shaft seats so that the end faces of the two sections of optical fiber are aligned;

[0016] When the melting unit moves to the center of the two sections for melting operation, the adsorption cotton continues to rotate inside the cleaning unit, forming a rotating cleaning effect to separate the debris and residual liquid;

[0017] When the melting unit finishes the melting operation to manufacture the next group of optical fibers, the adsorbent cotton is moved to one side of the cotton roller in advance and continues to rotate to transfer the alcohol to the inside of the adsorbent cotton to facilitate cleaning of the end face and surface of the optical fiber;

[0018] On the other hand, a manufacturing device for a bending-resistant special optical fiber includes a control unit, a cutting unit and a cutter therein, a melting unit, a supporting unit, a sliding unit, an outer frame unit, a connecting unit, a cleaning unit and a supporting column therein, wherein the cutting unit of the control unit is installed inside the outer frame unit through the connecting unit at the upper end, and the outer frame unit is located in the central area of ​​the supporting unit, the sliding units are symmetrically distributed at both ends of the supporting unit with the outer frame unit as a reference, and the control unit is located on the side of one of the sliding units;

[0019] The shaft-type seat is rotatably mounted inside the upper end of the sliding unit through a fixing frame at one end of the sliding unit, and three positioning grooves are evenly opened on the upper side for staggered installation of optical fibers for synchronous cutting operations. The sliding unit is equipped with a jacket through a slot at the other end;

[0020] The central groove runs transversely through the upper end area of ​​the support unit, and is provided with a gear shaft meshed with a gear seat at the bottom of one end of the sliding unit, so as to drive the sliding unit to rotate so that the two sections of optical fiber are aligned with the axis;

[0021] Adsorbent cotton, located in the inner circle area adjacent to both sides of the cutter, is used to clean the end face of the optical fiber;

[0022] The side grooves are located on both sides of the central groove, and are provided with bidirectional screws inside to drive the adjacent sliding units to adjust the spacing, thereby driving the optical fiber to press against the adsorbent cotton, so that the concave area of ​​the adsorbent cotton forms a coating on the optical fiber to clean the exposed part of the optical fiber;

[0023] The suspension is located outside the support column and adjacent to the sliding unit, and is used to install the support plate. The scraper at the end of the suspension is used to scrape off the impurities and residual alcohol in the adsorption cotton. A storage box is provided below the suspension to store the impurities and residual alcohol scraped off by the scraper.

[0024] The cotton roller is located on one side of the support column and adjacent to the suspension, and is used to contact the adsorption cotton to transport the alcohol stored in the adsorption cotton to the inside of the adsorption cotton to restore its cleaning function.

[0025] Beneficial effects of the present invention:

[0026] The three-way opening method of the present invention enables two sections to be installed to adjacent ones at the same time. At the initial installation, they are in a dislocated state, and the protruding part of the optical fiber is placed on the opposite one, so that they can be cut at the same time. Then, in the subsequent melting process, through the connection with, it can drive the rotation, so that the two ends of the optical fiber are aligned with each other, forming a fiber-to-fiber matching effect, and then directly performing the melting operation. Compared with the existing melting method, it does not require multiple positioning and installation to achieve the effect of multiple processes being carried out together, shortening the optical fiber manufacturing cycle while ensuring the quality of the optical fiber fusion connection;

[0027] The present invention can adjust the distance between the two optical fibers after cutting the optical fiber, so that the optical fiber end face is cleaned by moving between the two optical fibers and then slowly rotating. The distance between the two optical fibers can also be slightly reduced to slightly squeeze the optical fiber. At this time, the surface of the coated optical fiber adjacent to the end face is cleaned. By this treatment, the debris generated during cutting can be effectively prevented from adhering to the optical fiber, and the generation of bubbles and light reflection and the increase of loss can be avoided, thereby ensuring the optical signal transmission quality after the optical fiber is melt-manufactured.

[0028] The additional installation of the present invention can make impurities and residual alcohol fall off by scraping during the optical fiber melting operation, and then during the optical fiber end face cutting operation, it can be pressed in advance to allow the alcohol adsorbed by itself to penetrate, thereby forming a cycle, and the optical fiber cutting, cleaning and melting operations can be carried out continuously without worrying about the cleanliness of the optical fiber surface, thereby improving production efficiency and reducing work difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0031] Figure 2 for Figure 1 Schematic diagram of the upper structure of the sliding unit;

[0032] Figure 3 for Figure 1 A schematic diagram of the structure of the connection part between the sliding unit and the supporting unit;

[0033] Figure 4 for Figure 1 Schematic diagram of the cutting unit structure;

[0034] Figure 5 for Figure 4 Schematic diagram of the internal structure of the cutter;

[0035] Figure 6 for Figure 5 A partial enlarged structural schematic diagram of part A;

[0036] Figure 7 for Figure 1 A schematic diagram of the cleaning unit structure;

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] In the figure: 1. control unit; 2. cutting unit; 3. melting unit; 4. supporting unit; 5. sliding unit; 6. outer frame unit; 7. connecting unit; 8. cleaning unit;

[0039] 21. Cutter;

[0040] 22. Limit seat; 2201. Hollow cavity; 2202. Active motor;

[0041] 23. Limiting plate; 2301. Clamping block; 2302. Annular groove; 2303. Elastic protrusion; 2304. Dial plate;

[0042] 24, absorbent cotton; 2401, convex pad; 2402, guide edge;

[0043] 41, side groove; 4101, bidirectional screw;

[0044] 42, center groove; 4201, connecting shaft; 4202, gear shaft; 4203, rotating motor; 4204, support; 4205, bevel gear;

[0045] 51, shaft seat; 5101, positioning groove; 5102, clamping groove; 5103, jacket; 5104, fixing frame; 5105, gear seat;

[0046] 81, support column; 8101, two-way electric expansion joint; 8102, side frame; 8103, one-way electric expansion joint;

[0047] 82, suspension; 8201, support plate; 8202, scraper; 8203, storage box;

[0048] 83. Cotton roller; 8301. Liquid storage tank; 8302. Bracket; 8303. Infusion tube. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Embodiment 1

[0051] like Figure 1 - Figure 7 As shown, the present invention provides a method for manufacturing a special bending-resistant optical fiber, the method comprising:

[0052] S1: First, two sections of optical fiber are respectively installed in the positioning grooves 5101 on the two shaft-shaped seats 51, and the two positioning grooves 5101 are symmetrically distributed on both sides of the shaft-shaped seats in a top view, forming a staggered installation structure, and a gap is formed between the two optical fibers so that they do not contact each other. At this time, the protruding part of the optical fiber to be cut off is located in the positioning grooves 5101 on the adjacent shaft-shaped seats 51;

[0053] S2: After the optical fiber is positioned and installed, the two optical fibers can be cut at the same time by moving the cutter 21 downward, and the two sliding units 5 are directly adjusted to adjust the spacing after cutting, so that the adsorption cotton 24 outside the cutter 21 is lowered to the end surface area of ​​the two optical fibers;

[0054] S3: After the adsorption cotton 24 reaches the predetermined area, the rotation speed of the active motor 2202 is reduced so that the adsorption cotton 24 slowly wipes the optical fiber end face, thereby cleaning the two optical fibers at the same time;

[0055] S301: By adjusting the distance between the two sliding units 5, the optical fiber can be driven to squeeze the adsorption cotton 24, so that the adsorption cotton 24 is concave, and then the side surface formed by the concave covers the exposed part of the adjacent end face of the optical fiber, thereby cleaning its surface and achieving a double cleaning effect;

[0056] S4: The melting unit 3 and the cutting unit 2 are simultaneously moved in a translational manner through the driving assembly inside the upper end of the connecting unit 7 and the outer frame unit 6 to achieve the effect of switching the working area; and then the gear shaft 4202 is meshed with the gear seat 5105 to drive the shaft seat 51 to rotate so that the end faces of the two optical fibers are aligned to form a positioning;

[0057] S401: During the process of switching the working area, since the distance between the center of the melting unit 3 and the center of the shaft seat 51 is the same as the distance between the center of the cutting unit 2 and the support plate 8201, when the melting unit 3 moves to the working area, the adsorption cotton 24 moves between the adjacent paperboards 8201, and during the melting operation, the scraper 8202 removes impurities and residual alcohol in the adsorption cotton 24, and the two processes are carried out simultaneously to reduce time consumption;

[0058] S402: The separated impurities fall downward and are collected in the storage box 8203 for subsequent centralized cleaning;

[0059] S5: When the melting operation is completed and the next group of optical fibers is manufactured, the cutting unit 2 is moved again through the connecting unit 7, so that the adsorbent cotton 24 moves to between the adjacent cotton rollers 83 and continues to rotate. Through continuous contact, alcohol is exuded from the pressed surface of the cotton roller 83 and then absorbed by the adsorbent cotton 24, achieving the effect of an alcohol transfer storage mechanism, so that the adsorbent cotton 24 can clean the end face and surface of the optical fiber in the next group of processes;

[0060] S501: Before the cotton roller 83 outputs alcohol, the arc pad located inside the bracket 8302 loosens the alcohol to the cotton roller 83 through the porous structure of the surface, combined with the liquid storage tank 8301 and the infusion tube 8303, thereby forming a continuous alcohol transfer effect when the adsorption cotton 24 rotates.

[0061] Embodiment 2

[0062] like Figure 1- Figure 7 As shown, a manufacturing device for a bending-resistant special optical fiber includes a control unit 1, a cutting unit 2 and a cutter 21 therein, a melting unit 3, a supporting unit 4, a sliding unit 5, an outer frame unit 6, a connecting unit 7, a cleaning unit 8 and a supporting column 81 therein, wherein the cutting unit 2 of the control unit 1 is installed inside the outer frame unit 6 through the connecting unit 7 at the upper end, and the outer frame unit 6 is located in the central area of ​​the supporting unit 4, the sliding units 5 are symmetrically distributed at both ends of the supporting unit 4 with the outer frame unit 6 as a reference, and the control unit 1 is located on the side of one of the sliding units 5;

[0063] The shaft-type seat 51 is rotatably mounted inside the upper end of the sliding unit 5 through the fixing frame 5104 at one end of the sliding unit 5, and three positioning grooves 5101 are evenly opened on the upper side for staggered installation of optical fibers for synchronous cutting operations. The sliding unit 5 is installed with a jacket 5103 through the card slot 5102 at the other end;

[0064] The central groove 42 runs transversely through the upper end region of the support unit 4, and is provided with a gear shaft 4202 inside that engages with a gear seat 5105 at the bottom of one end of the sliding unit 5, and is used to drive the sliding unit 5 to rotate so that the two sections of optical fiber are aligned with the axis;

[0065] Adsorbent cotton 24, located in the inner circle area adjacent to both sides of the cutter 21, for cleaning the end face of the optical fiber;

[0066] The side grooves 41 are located on both sides of the central groove 42, and are provided with bidirectional screws 4101 therein for driving the adjacent sliding units 5 to adjust the spacing, thereby driving the optical fiber to press against the adsorbent cotton 24, so that the concave area of ​​the adsorbent cotton 24 forms a coating on the optical fiber to clean the exposed part of the optical fiber;

[0067] The suspension 82 is located outside the support column 81 and adjacent to the sliding unit 5, and is used to install the support plate 8201. The scraper 8202 at the end thereof is used to scrape off the impurities and residual alcohol in the adsorption cotton 24. A storage box 8203 is provided below the suspension 82 to store the impurities and residual alcohol scraped off by the scraper 8202.

[0068] A cotton roller 83 is provided inside the support column 81 for connecting to the liquid storage tank 8301. The other end of the cotton roller 83 is connected to an arc pad on one side of the cotton roller 83. The arc pad is a porous structure for reducing the alcohol transmitted by the infusion tube 8303. The arc pad is installed on the bracket 8302 inside the support column 81. A bidirectional electric retractor 8101 is provided inside the cleaning unit 8 for driving the adjacent support columns 81 to translate in the opposite direction at the same time.

[0069] The cotton roller 83 is located on one side of the support column 81 and adjacent to the suspension 82, and is used to contact the adsorption cotton 24 to transport the alcohol stored in the adsorption cotton 24 to restore the cleaning function;

[0070] A side frame 8102 extending outward is provided in front of the support column 81, and a one-way electric telescopic device 8103 is provided inside to drive the suspension 82 to retract to ensure that the support plate 8201 and the cotton roller 83 do not affect each other.

[0071] The present embodiment provides an integrated optical fiber cutting and melting device with a short manufacturing cycle and high melting quality. By utilizing the staggered installation of the optical fibers on adjacent shaft-shaped seats 51, the cutter 21 can cut two optical fibers at the same time, thereby ensuring the symmetry of the two optical fibers relative to the cutting surface to provide subsequent positioning accuracy; further, by utilizing the simultaneous reverse and equal-angle rotation of the two shaft-shaped seats 51, the adjacent optical fibers can be aligned immediately after cutting, which is convenient for the melting operation; in addition, before aligning the optical fibers, the spacing between the two optical fibers is first adjusted by the bidirectional screw 4101, so that the adsorption cotton 24 on both sides of the cutter 21 can be moved to the middle of the two optical fibers, aligned for cleaning, and a concave side is formed under the extrusion of the optical fiber, so that the surface of the adjacent end face of the optical fiber is cleaned, achieving a double cleaning effect; finally, during the melting operation, the scraper 8202 can also directly scrape off the impurities on the adsorption cotton 24 and the alcohol inside, and store them in the liquid storage tank 8301, and then use the cotton roller 83 to transfer the alcohol stored in itself to the adsorption cotton 24, forming a cycle, so that the equipment can perform continuous cutting and melting operations on the optical fiber.

[0072] like Figure 3 As shown, a rotating motor 4203 is installed at the inner center of the center groove 42, and bevel gears 4205 are provided at the opposite ends of the two connecting rods 4201 on which the gear shafts 4202 are installed and at the upper end of the rotating motor 4203. Two adjacent bevel gears 4205 are meshed with each other. Under the meshing action of the bevel gear 4205 above the rotating motor 4203 and the bevel gear 4205 at the end of the adjacent connecting rod 4201, the two connecting rods 4201 can rotate at the same angle in opposite directions at the same time, and a support 4204 for mounting the connecting rod 4201 is provided near the center of the center groove 42.

[0073] like Figure 4 As shown, a limit seat 22 is provided at the upper end of the cutting unit 2, which is used to connect the telescopic mechanism below the unit 7. The limit seat 22 is used to install the active motor 2202 through the hollow cavity 2201 opened inside. The built-in method makes the structure simple, occupies less space, and is more practical.

[0074] like Figure 4 - Figure 6As shown, a limit plate 23 is installed on the outer side of the rotating shaft at the center of the cutter 21, and an annular groove 2302 is provided on the outer side of the limit plate 23 for docking with the convex pad 2401 on the inner side of the adsorption cotton 24, and a paddle 2304 is provided inside the annular groove 2302 for clamping the convex pad 2401 to fix the limit plate 23, and an arc 2303 is also provided inside the annular groove 2302 to press against the paddle 2304, so that it is sunken and presses against the guide edge 2402 on the side of the convex pad 2401 adjacent to the adsorption cotton 24.

[0075] It can be understood that the cutting and melting operations of the optical fiber can be performed continuously without the need to position and install the optical fiber multiple times in the middle. In addition, the end face and surface of the optical fiber can be cleaned immediately after cutting, effectively avoiding quality problems caused by residual impurities.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for manufacturing a special bending-resistant optical fiber, characterized in that the method include: The two sections of optical fiber are installed in a staggered manner, and the axes of the two sections of optical fiber are symmetrical to each other based on the longitudinal axis of the axis of the shaft seat (51); After the two sections of optical fiber are fixed, the two sections of optical fiber are cut simultaneously by a cutter (21), and after the optical fiber and the cut section are separated, the distance between the two sliding units (5) is adjusted, and the adsorption cotton (24) is lowered to the end surface area of ​​the two optical fibers; By reducing the driving force of the active motor (2202) to slow down the rotation speed, the adsorption cotton (24) can clean the end faces of the two sections of optical fiber at the same time; Then, the distance between the sliding units (5) is adjusted so that the two sections of optical fiber exert a squeezing force on the adsorbent cotton (24), and the adsorbent cotton (24) covers the exposed part of the adjacent end face of the optical fiber to achieve secondary cleaning; The working areas of the melting unit (3) and the cutting unit (2) are switched by means of a connecting unit (7), and the two shaft-shaped seats (51) are reversed so that the end faces of the two sections of optical fiber are aligned; When the melting unit (3) moves to the center of the two optical fibers to perform melting operations, the adsorption cotton (24) continues to rotate inside the cleaning unit (8), forming a rotating cleaning effect to separate debris and residual liquid; When the melting unit (3) completes the melting operation to produce the next group of optical fibers, the adsorbent cotton (24) is moved to one side of the cotton roller (83) in advance and continues to rotate to transfer alcohol to the inside of the adsorbent cotton (24) to facilitate cleaning of the end face and surface of the optical fiber.

2. The method for manufacturing a bending-resistant special optical fiber according to claim 1, characterized in that: When the two sections of optical fiber are positioned and installed in a staggered manner, the three positioning grooves (5101) of the two shaft-shaped seats (51) are aligned with each other, and the optical fibers are positioned and installed in the positioning grooves (5101) in front and rear of the two sliding units (5), respectively, thereby forming a staggered installation, and the protruding portion of the optical fiber is received by the positioning groove (5101) of the relative shaft-shaped seat (51).

3. The method for manufacturing a bending-resistant special optical fiber according to claim 2, characterized in that: The optical fibers at both ends are installed in a staggered manner so as not to contact each other, and under the action of the bidirectional screw (4101), the distance between the cutter (21) and the shaft seat (51) is made the same, thereby enabling the two sections of optical fiber to be cut simultaneously and ensuring the cutting accuracy and symmetry of the two sections of optical fiber after cutting.

4. The method for manufacturing a bending-resistant special optical fiber according to claim 3, characterized in that: When the adsorbent cotton (24) cleans the end face of the optical fiber, it continuously wipes the end face of the optical fiber in a rotating manner to remove attached debris. When the optical fiber squeezes the adsorbent cotton (24), the adsorbent cotton (24) is deformed to form a depression at the squeezing point, thereby covering the optical fiber and achieving the effect of cleaning the surface of the optical fiber adjacent to the end face area.

5. The method for manufacturing a bending-resistant special optical fiber according to claim 4, characterized in that: The distance between the center of the melting unit (3) and the center of the shaft seat (51) is the same as the distance between the center of the cutting unit (2) and the support plate (8201). Therefore, after switching the melting unit (3) and the shaft seat (51), the adsorption cotton (24) continues to rotate to scrape off the adsorbed impurities and residual alcohol in time, which is carried out synchronously with the melting operation.

6. The method for manufacturing a bending-resistant special optical fiber according to claim 5, characterized in that: During the switching between the melting unit (3) and the cutting unit (2), the gear shaft (4202) drives the shaft seat (51) to rotate via the gear seat (5105), and under the action of the bevel gear (4205), the two sliding units (5) rotate in opposite directions at the same time, thereby aligning the two sections of optical fiber at the upper center position of the sliding unit (5).

7. The method for manufacturing a bending-resistant special optical fiber according to claim 6, characterized in that: After the melting operation, the adsorbent cotton (24) is moved to the area where the cotton roller (83) is located, and then under the rotation of the adsorbent cotton (24), the cotton roller (83) transfers the alcohol stored in the liquid storage tank (8301) to the adsorbent cotton (24), so that it returns to its initial state for the next group of cleaning operations.

8. A manufacturing device for a special bending-resistant optical fiber, adopting a manufacturing method for a special bending-resistant optical fiber according to claim 7, the manufacturing device comprising a control unit (1), a cutting unit (2) and a cutter (21) therein, a melting unit (3), a supporting unit (4), a sliding unit (5), an outer frame unit (6), a connecting unit (7), a cleaning unit (8) and a supporting column (81) therein, wherein the control unit (1) and the cutting unit (2) are installed inside the outer frame unit (6) through the connecting unit (7) at the upper end, and the outer frame unit (6) is located in the central area of ​​the supporting unit (4), the sliding units (5) are symmetrically distributed at both ends of the supporting unit (4) with the outer frame unit (6) as a reference, and the control unit (1) is located on the side of one of the sliding units (5), characterized in that: The shaft-shaped seat (51) is rotatably mounted inside the upper end of the sliding unit (5) through a fixing frame (5104) at one end of the sliding unit (5), and three positioning grooves (5101) are evenly arranged on the upper side for staggered installation of optical fibers for synchronous cutting operations. The sliding unit (5) is installed with a jacket (5103) through a clamping groove (5102) at the other end; A central groove (42) is formed transversely through the upper end region of the support unit (4), and is provided with a gear shaft (4202) inside thereof, which is engaged with a gear seat (5105) at the bottom of one end of the sliding unit (5), and is used to drive the sliding unit (5) to rotate so that the two sections of optical fiber are aligned with the axis; Adsorbent cotton (24), located in the inner circle area adjacent to both sides of the cutter (21), for cleaning the end face of the optical fiber; The side grooves (41) are located on both sides of the central groove (42), and are provided with bidirectional screws (4101) therein for driving the adjacent sliding units (5) to adjust the spacing, thereby driving the optical fiber to press against the adsorbent cotton (24), so that the concave area of ​​the adsorbent cotton (24) forms a coating on the optical fiber to clean the exposed part of the optical fiber; The suspension (82) is located outside the support column (81) and adjacent to the sliding unit (5), and is used to install the support plate (8201). The scraper (8202) at the end thereof is used to scrape off impurities and residual alcohol in the adsorption cotton (24). A storage box (8203) is provided below the suspension (82) for storing impurities and residual alcohol scraped off by the scraper (8202); The cotton roller (83) is located on one side of the support column (81) adjacent to the suspension (82) and is used to contact the adsorption cotton (24) to transport the alcohol stored in the adsorption cotton (24) to the inside of the adsorption cotton (24) to restore its cleaning function.

9. The manufacturing device of the bending-resistant special optical fiber according to claim 8, characterized in that: A rotating motor (4203) is installed at the inner center of the central groove (42), and bevel gears (4205) are provided at the opposite ends of the two connecting rods (4201) on which the gear shafts (4202) are installed and at the upper end of the rotating motor (4203). Two adjacent bevel gears (4205) are meshed with each other to enable adjacent sliding units (5) to rotate in opposite directions at the same angle at the same time.

10. The manufacturing device of the bending-resistant special optical fiber according to claim 9, characterized in that: The upper end of the cutting unit (2) is provided with a limit seat (22) for connecting the telescopic mechanism below the unit (7); the limit seat (22) is provided with an active motor (2202) via a hollow cavity (2201) opened inside.

11. The manufacturing device of the bending-resistant special optical fiber according to claim 10, characterized in that: A limiting plate (23) is installed on the outer side of the rotating shaft at the center of the cutting knife (21); an annular groove (2302) is provided on the outer side of the limiting plate (23) for docking with a convex pad (2401) on the inner side of the adsorption cotton (24); a shifting plate (2304) is provided inside the annular groove (2302) for clamping the convex pad (2401) to fix the limiting plate (23).

12. The manufacturing device of the bending-resistant special optical fiber according to claim 11, characterized in that: A cotton roller (83) is provided inside the support column (81) for connecting to the liquid storage tank (8301), and the other end of the cotton roller (83) is connected to an arc pad on one side of the cotton roller (83), and the arc pad is a porous structure for reducing the alcohol transmitted by the infusion tube (8303).

13. The manufacturing device of the bending-resistant special optical fiber according to claim 12, characterized in that: The support column (81) is provided with a side frame (8102) extending outward in front, and a one-way electric telescopic device (8103) is provided inside to drive the suspension (82) to retract to ensure that the support plate (8201) and the cotton roller (83) do not affect each other.

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