High-strength special optical fiber manufacturing method, manufacturing system and high-strength special optical fiber

Abstract

The invention relates to the field of optical fibers, and provides a high-strength special optical fiber manufacturing method, a high-strength special optical fiber manufacturing system and a high-strength special optical fiber. The manufactured high-strength special optical fiber comprises an optical fiber main body and a plurality of protective sleeves arranged on the optical fiber main body in a sleeving mode, the optical fiber main body comprises a fiber core, a wrapping layer arranged on the surface of the fiber core and a coating layer covering the wrapping layer, and the protective sleeves are annular and can sleeve the optical fiber main body. The protection sleeve comprises a plurality of protection units which are integrally connected and are uniformly distributed along the circumferential direction of the optical fiber main body, each protection unit comprises an elastic part and a supporting part which are integrally connected, the elastic part is arc-shaped, and when the optical fiber main body is sleeved with the protection sleeve, the first end of the elastic part abuts against the optical fiber main body; a distance is reserved between the second end of the elastic part and the optical fiber body, and the supporting part is located between the second end of the elastic part and the optical fiber body. According to the invention, the protective sleeve can be used for protection at a position needing to be protected, and the impact resistance of the optical fiber is improved.

Description

Technical Field

[0001] The present invention relates to the field of special optical fibers, and in particular to a method and system for manufacturing high-strength special optical fibers and high-strength special optical fibers. Background Art

[0002] Optical fiber is short for optical fiber, which is a fiber made of glass or plastic. It transmits light through the principle of total reflection of light, thereby realizing the function of transmitting information. In some special application scenarios, optical fiber needs to have certain special properties, and such optical fiber can be collectively referred to as special optical fiber. For example, in some scenarios, because the optical fiber may frequently shake, or frequently collide with other objects, or even be squeezed by other objects, it is necessary to make the optical fiber have sufficient strength to avoid damage and breakage of the optical fiber, which may lead to interruption of information transmission.

[0003] In the prior art, the main means to improve the strength of optical fiber is to set multiple layers of different reinforcement structures on the surface of the optical fiber to improve the impact resistance of the optical fiber, thereby achieving the effect of reducing the probability of optical fiber damage. However, in fact, not every position of the optical fiber may be impacted. When laying optical fiber, only some special positions need to be protected. Although the existing method of setting up reinforcement structures can improve the strength of optical fiber, it will also cause the overall weight of the optical fiber to increase significantly, and the flexibility will also become worse. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the present invention provides a high-strength special optical fiber manufacturing method, a manufacturing system and a high-strength special optical fiber, which can be protected by a protective cover at a position that needs protection, thereby improving the impact resistance of the optical fiber.

[0005] In order to achieve the above object, the specific scheme adopted by the present invention is: a method for manufacturing a high-strength special optical fiber, comprising the following steps: manufacturing an optical fiber body, the optical fiber body comprising a core, a cladding and a coating; Manufacturing a protective sleeve, the protective sleeve is annular and can be sleeved on the optical fiber body, the protective sleeve comprises a plurality of protective units that are integrally connected and evenly distributed along the circumference of the optical fiber body, the protective unit comprises an elastic part and a supporting part that are integrally connected, and the elastic part is arc-shaped; A plurality of the protective sleeves are sleeved on the optical fiber body. After the protective sleeves are sleeved on the optical fiber body, the first end of the elastic part is against the optical fiber body, and a distance is left between the second end of the elastic part and the optical fiber body, and the supporting part is located between the second end of the elastic part and the optical fiber body.

[0006] Preferably, the method for manufacturing the protective cover comprises: Cutting the metal strip into a plurality of rectangular metal sheets; Bending the metal sheet along the length direction, and fixing and connecting the two ends of the metal sheet to form an annular metal belt; The annular metal belt is extruded to form a plurality of the protection units to obtain the protection sleeve.

[0007] Preferably, before cutting the metal strip into a plurality of rectangular metal sheets, a plurality of through holes evenly distributed along the length direction of the metal strip are punched out on the metal strip.

[0008] A manufacturing system for implementing the above-mentioned high-strength special optical fiber manufacturing method, the manufacturing system comprising: A stamping device, used for stamping a plurality of through holes evenly distributed along the length direction of the metal strip on the metal strip; A cutting device, used for cutting the metal strip into a plurality of rectangular metal sheets; A first forming device, used for bending the metal sheet along the length direction and fixing the two ends of the metal sheet to form an annular metal belt; The second molding device is used to extrude the annular metal belt to form a plurality of the protection units to obtain the protection sleeve.

[0009] Preferably, the stamping equipment includes a feeding conveyor for transporting the metal strip, the conveyor belt of the feeding conveyor includes two monomers, and a gap is left between the two monomers, a stamping driver is arranged above the gap, and the stamping driver drives and connects a plurality of downward stamping heads, and a base is fixedly arranged below the gap, and a plurality of stamping channels corresponding to the stamping heads are opened on the base, and all the stamping channels are commonly connected to a chip removal channel, and the chip removal channel passes through the bottom of the base.

[0010] Preferably, the second molding device includes a strip-shaped fixed mold, the annular metal belt can be sleeved on the fixed mold, a plurality of shaping protrusions are integrally connected to the peripheral side wall of the fixed mold, a plurality of shaping blocks are arranged on the peripheral side of the fixed mold, the shaping blocks are connected to an extrusion driver for driving the shaping blocks to approach or move away from the fixed mold, and the shaping blocks and the shaping protrusions cooperate with each other to extrude the annular metal belt to form the protection unit.

[0011] A high-strength special optical fiber is manufactured using the above-mentioned high-strength special optical fiber manufacturing method. The high-strength special optical fiber includes an optical fiber body and a plurality of protective sleeves sleeved on the optical fiber body. The optical fiber body includes a fiber core, a cladding arranged on the surface of the fiber core, and a coating layer covering the cladding. The protective sleeve is annular and can be sleeved on the optical fiber body. The protective sleeve includes a plurality of protective units that are integrally connected and evenly distributed along the circumferential direction of the optical fiber body. The protective unit includes an elastic portion and a supporting portion that are integrally connected. The elastic portion is arc-shaped. When the protective sleeve is sleeved on the optical fiber body, the first end of the elastic portion abuts against the optical fiber body, and a distance is left between the second end of the elastic portion and the optical fiber body, and the supporting portion is located between the second end of the elastic portion and the optical fiber body.

[0012] Preferably, an outer skin is fixedly provided on the coating layer, and a plurality of raised strips extending along the length direction of the optical fiber body are provided on the circumferential side wall of the outer skin, and all the raised strips are evenly distributed along the circumferential direction of the optical fiber body, and a distance is left between two adjacent raised strips to form a groove, and when the protective sleeve is put on the optical fiber body, the first end of the elastic part and the supporting part both abut against the bottom of the groove.

[0013] Preferably, in the direction from the first end to the second end, the distance between the elastic portion and the optical fiber body first gradually increases and then gradually decreases.

[0014] Preferably, a heat shrink tubing is sleeved on the protective sleeve, and the heat shrink tubing can be fixed to the outer skin by a binding piece.

[0015] In the high-strength special optical fiber manufactured by the manufacturing method and manufacturing equipment of the present invention, the multiple protection units of the protective sleeve can protect the optical fiber body from different directions. When an external object impacts the protection unit, the elastic part can absorb energy and produce deformation, avoiding the impact force from directly acting on the optical fiber body, thereby protecting the optical fiber body. More specifically, because the first end of the elastic part is against the optical fiber body, and there is a distance between the second end and the optical fiber body, and a support part is provided between the second end and the optical fiber body, when the elastic part is impacted, it will push the support part to tilt toward another protection unit while producing deformation, so that the support part also absorbs a certain amount of energy, avoiding the elastic part from being subjected to excessive force and producing permanent deformation, and ensuring that the optical fiber body can be continuously protected. Correspondingly, in two adjacent protection units, a distance is left between the support part of one protection unit and the elastic part of the other protection unit to form a deformation area, so that the support part can tilt in the deformation area. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the high-strength special optical fiber of the present invention; Figure 2 It is a schematic diagram of the structure of the outer skin; Figure 3 It is a schematic diagram of the fixing method of the heat shrink tubing; Figure 4 It is a structural schematic diagram of the stamping equipment; Figure 5 is a schematic diagram of the setting method of the guide plate; Figure 6 It is a structural schematic diagram of the second molding equipment.

[0018] Figure numerals: 1-fiber core, 2-cladding, 3-coating layer, 4-skin, 5-raised strip, 6-groove, 7-protective cover, 8-elastic part, 9-support part, 10-through hole, 11-deformation area, 12-heat shrink sleeve, 13-annular positioning groove, 14-coating part, 15-transition part, 16-connecting part, 17-bundling part, 18-feeding conveyor, 19-guide plate, 20-punching drive, 21-punching head, 22-base, 23-punching channel, 24-chip removal channel, 25-chip removal pipe, 26-chip removal conveyor, 27-monomer, 28-gap, 29-guide part, 30-fixed mold, 31-molding protrusion, 32-molding groove, 33-molding block, 34-extrusion drive, 35-annular metal belt. DETAILED DESCRIPTION

[0019] 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.

[0020] The present invention first provides a method for manufacturing a high-strength special optical fiber, including S1 to S3.

[0021] S1. Manufacturing an optical fiber body, the optical fiber body includes a core 1, a cladding 2 and a coating 3. In the present invention, the core 1, the cladding 2 and the coating 3 are all conventional components of an optical fiber, and the method for manufacturing the optical fiber body is also a mature prior art in the art, which will not be described in detail here.

[0022] S2. Manufacturing a protective cover 7, which is annular and can be put on the optical fiber body. The protective cover 7 includes a plurality of protective units which are integrally connected and evenly distributed along the circumferential direction of the optical fiber body. The protective unit includes an elastic portion 8 and a supporting portion 9 which are integrally connected. The elastic portion 8 is arc-shaped and has a strip-like structure.

[0023] S3. Put a plurality of protective covers 7 on the optical fiber body. After the protective covers 7 are put on the optical fiber body, the first end of the elastic part 8 is against the optical fiber body, and a distance is left between the second end of the elastic part 8 and the optical fiber body. The supporting part 9 is located between the second end of the elastic part 8 and the optical fiber body.

[0024] Through S2 and S3, the high-strength special optical fiber manufactured by the present invention mainly includes an optical fiber body and a protective sleeve 7 sleeved on the optical fiber body. In the protective sleeve 7, the protective unit mainly plays the role of resisting impact and preventing the optical fiber body from being excessively bent. Specifically, multiple protection units can protect the optical fiber body from different directions. There is a distance between the elastic part 8 in the protection unit and the optical fiber body. When the protection unit is impacted by the outside world, the elastic part 8 can be deformed to absorb the impact force, avoid the external impact directly acting on the optical fiber body, and achieve the protection of the optical fiber body. The support part 9 can prop up the elastic part 8 and restore the elastic part 8 smoothly after the impact ends, so as to continuously protect the optical fiber body. On the other hand, when the optical fiber body needs to be bent, for example, when the optical fiber body needs to go around the edge of the wall, the protective sleeve 7 can be fixed in the bending position, and the protective sleeve 7 supports the optical fiber body to avoid the bending loss caused by excessive bending of the optical fiber body, so as to ensure the stability and reliability of signal transmission.

[0025] Furthermore, in the present invention, the protective cover 7 can be made of metal, such as conventional materials such as copper, aluminum or stainless steel. Accordingly, the method for manufacturing the protective cover 7 in S2 includes S21 to S23.

[0026] S21, cutting the metal strip into a plurality of rectangular metal sheets. Specifically, first unwind the coiled metal strip, and then cut it into a plurality of rectangular metal sheets, and the length of the metal sheet needs to be greater than the circumference of the optical fiber body, that is, the circumference of the cross section of the optical fiber body.

[0027] S22, bend the metal sheet along the length direction, and fix the two ends of the metal sheet to form an annular metal belt 35. On the basis of using metal material, the two ends of the metal sheet can be fixed by welding.

[0028] S23, the annular metal belt 35 is extruded to form a plurality of protection units, thereby obtaining the protection sleeve 7. In order to ensure the accuracy of the processed protection units, the plurality of protection units may be extruded one by one.

[0029] In order to improve the stability of the protective sleeve 7 on the optical fiber body and avoid the optical fiber body from being offset due to vibration and other reasons, which leads to the inability to avoid excessive bending of the optical fiber body, the protective sleeve 7 can be bonded to the optical fiber body. In order to facilitate the fixing of the protective sleeve 7 by bonding, before cutting the metal strip into a plurality of rectangular metal sheets, a plurality of through holes 10 evenly distributed along the length direction of the metal strip are punched out on the metal strip. After the protective sleeve 7 is processed, the through hole 10 is located between two adjacent protection units, specifically at the intersection of the support portion 9 in the previous protection unit and the elastic portion 8 in the next protection unit. Because the first ends of the support portion 9 and the elastic portion 8 are both against the optical fiber body, the through hole 10 is also close to the surface of the optical fiber body. On this basis, the adhesive can be applied to the intersection of the two protection units, and the adhesive can pass through the through hole 10 to contact the optical fiber body. After the adhesive is dried, a part of it is fixed on the optical fiber body, and the other part is fixed on the protective sleeve 7, thereby achieving the effect of connecting the optical fiber body and the protective sleeve 7. By fixing the protective cover 7 on the optical fiber body, it is possible to prevent the protective cover 7 from shifting and being unable to continue protecting the optical fiber body. The specific material of the adhesive is the prior art, such as epoxy resin adhesive, etc., and will not be described in detail here.

[0030] The present invention further provides a manufacturing system for implementing the above-mentioned high-strength special optical fiber manufacturing method, and the manufacturing system includes a stamping device, a cutting device, a first molding device and a second molding device.

[0031] The punching equipment is used to punch out a plurality of through holes 10 evenly distributed along the length direction of the metal strip on the metal strip.

[0032] Cutting equipment is used to cut metal strip into multiple rectangular metal sheets.

[0033] The first forming device is used to bend the metal sheet along the length direction and fix the two ends of the metal sheet to form an annular metal belt 35.

[0034] The second molding device is used to extrude the annular metal belt 35 to form a plurality of protection units to obtain a protective sleeve.

[0035] When manufacturing the above-mentioned high-strength special optical fiber, firstly, the optical fiber body is manufactured by using the existing technology for standby. Then, a punching device is used to punch out a through hole 10 on the metal strip. After that, a cutting device is used to cut the metal strip with multiple through holes 10 to obtain multiple rectangular metal sheets, and the length of the metal sheet is greater than the circumference of the optical fiber body. Subsequently, the metal sheet is bent by using a first molding device, and the two ends of the metal sheet are welded and fixed to form an annular metal belt 35. Then, the annular metal belt 35 is extruded by a second molding device to obtain a protective cover 7. Finally, multiple protective covers 7 are put on the optical fiber body to complete the processing of the high-strength special optical fiber.

[0036] It should be noted that the above-mentioned cutting equipment and first forming equipment are both existing technologies, for example, existing automatic steel strip cutting machines and pipe making machines can be used.

[0037] like Figure 4 As shown, the specific structure of the stamping equipment is: the stamping equipment includes a feeding conveyor 18 for transporting metal strips, the conveyor belt of the feeding conveyor 18 includes two monomers 27, and a gap 28 is left between the two monomers 27, a stamping driver 20 is arranged above the gap 28, and the stamping driver 20 drives and connects a plurality of downward stamping heads 21, and a base 22 is fixedly arranged below the gap 28, and a plurality of stamping channels 23 corresponding to the stamping heads 21 are opened on the base 22, and all the stamping channels 23 are commonly connected to a chip removal channel 24, and the chip removal channel 24 passes through the bottom of the base 22. When processing the through hole 10, the metal strip is first unwound from the coiled state, and then the metal strip is conveyed to the bottom of the punch head 21 through the feed conveyor 18, and the feed conveyor 18 is paused, and then the punch driver 20 is used to drive multiple punch heads 21 to move downward, and the metal strip is extruded and cut by the punch heads 21 to form the through hole 10, and the cut chips go down the traditional punch channel 23 into the chip removal channel 24, and then pass through the chip removal channel 24 to be discharged to the outside. A punch driver 20 is connected to multiple punch heads 21, and multiple through holes 10 can be processed at one time, thereby improving processing efficiency. It should be noted that the punch driver 20 can use a conventional hydraulic mechanism or cylinder, which will not be repeated here.

[0038] Furthermore, in order to better collect the cut chips for reuse, the chip removal channel 24 is connected to a chip removal pipe 25 extending downward, and a chip removal conveyor 26 is provided below the chip removal pipe 25. The conveying direction of the chip removal conveyor 26 is different from that of the feed conveyor 18. After passing through the chip removal channel 24, the chips pass through the chip removal pipe 25 and finally fall downward onto the chip removal conveyor 26, and are transported away by the chip removal conveyor 26. The chip removal pipe 25 can restrict the falling direction of the chips, ensuring that the chips can smoothly fall onto the chip removal conveyor 26. It should be noted that both the feed conveyor 18 and the chip removal conveyor 26 can adopt conventional belt conveyors, except that the belt in the feed conveyor 18 is composed of two monomers 27.

[0039] like Figure 5 As shown, in order to ensure the accuracy of the through hole 10, especially to ensure that the through hole 10 is located in the middle of the metal strip, a guide plate 19 can be provided on each side of the feeding conveyor 18, and the end of the guide plate 19 close to the incoming direction is connected to a guide portion 29 inclined outward. If the metal strip deviates during movement, it will contact the guide portion 29, and then be changed in direction by the guide portion 29, and finally smoothly enter between the two guide plates 19, and the two edges of the metal strip are respectively in contact with the two guide plates 19, so that the guide plates 19 are used to limit the metal strip to ensure that the through hole 10 is located in the middle of the metal strip.

[0040] like Figure 6 As shown, the structure of the second molding device is as follows: the second molding device includes a strip-shaped fixed mold 30, an annular metal belt 35 can be sleeved on the fixed mold 30, a plurality of shaping protrusions 31 are integrally connected to the peripheral side wall of the fixed mold 30, a plurality of shaping blocks 33 are arranged on the peripheral side of the fixed mold 30, a shaping groove 32 is formed between two adjacent shaping blocks 33, the shaping blocks 33 are connected to an extrusion driver 34 for driving the shaping blocks 33 to approach or move away from the fixed mold 30, and the shaping blocks 33 and the shaping protrusions 31 cooperate with each other to extrude the annular metal belt 35 to form a protection unit.

[0041] After the annular metal belt 35 is obtained, the annular metal belt 35 is put on the fixed mold 30, and then the extrusion drivers 34 are started one by one, and the extrusion drivers 34 drive the shaping blocks 33 to move. When the shaping blocks 33 approach the shaping protrusions 31, a cavity is formed between the shaping blocks 33 and the shaping protrusions 31, and a part of the annular metal belt 35 is squeezed into the cavity, and finally squeezed and shaped to form a protection unit. Obviously, the cavity should match the shape of the protection unit.

[0042] In order to ensure the processing accuracy, the fixed mold 30 is set horizontally. After the annular metal belt 35 is put on the fixed mold 30, it falls downward under the action of gravity until it contacts the highest point of the fixed mold 30 and its position is stable. After that, an extrusion driver 34 above the highest point of the fixed mold 30 is used to drive the shaping block 33 connected to it to move downward to extrude the annular metal belt 35. Because the position of the annular metal belt 35 is stable at this time, the annular metal belt 35 will not shift during the extrusion process, which can ensure the processing accuracy of the first protection unit. Subsequently, the extrusion of the annular metal belt 35 is maintained, and the remaining extrusion drivers 34 are started one by one in sequence, and finally the annular metal belt 35 is processed into a protective sleeve 7.

[0043] like Figures 1 to 3 As shown, the present invention finally provides a high-strength special optical fiber, which is manufactured using the above-mentioned high-strength special optical fiber manufacturing method. The high-strength special optical fiber includes an optical fiber body and a plurality of protective sleeves 7 sleeved on the optical fiber body. The optical fiber body includes a core 1, a cladding 2 arranged on the surface of the core 1, and a coating layer 3 covering the cladding 2. The protective sleeve 7 is annular and can be sleeved on the optical fiber body. The protective sleeve 7 includes a plurality of protective units that are integrally connected and uniformly distributed along the circumferential direction of the optical fiber body. The protective unit includes an elastic portion 8 and a supporting portion 9 that are integrally connected. The elastic portion 8 is arc-shaped. When the protective sleeve 7 is sleeved on the optical fiber body, the first end of the elastic portion 8 is against the optical fiber body, and a distance is left between the second end of the elastic portion 8 and the optical fiber body, and the supporting portion 9 is located between the second end of the elastic portion 8 and the optical fiber body.

[0044] In the special optical fiber of the present invention, the structure of the optical fiber body is the prior art, and the appropriate material and structure of the fiber core 1 can be selected according to actual needs, which will not be repeated here. The protective cover 7 is used to protect the optical fiber body, mainly to prevent external force impact on the optical fiber body causing damage or even breakage of the optical fiber body. Specifically, the multiple protection units of the protective cover 7 can protect the optical fiber body from different directions. When an external object impacts the protection unit, the elastic part 8 can absorb energy and produce deformation, avoiding the impact force directly acting on the optical fiber body, thereby protecting the optical fiber body. More specifically, because the first end of the elastic part 8 is against the optical fiber body, and there is a distance between the second end and the optical fiber body, and a support part 9 is provided between the second end and the optical fiber body, when the elastic part 8 is impacted, it will push the support part 9 to tilt toward another protection unit while producing deformation, so as to use the support part 9 to absorb a certain amount of energy, avoid the elastic part 8 from being subjected to excessive force and causing permanent deformation, and ensure that the optical fiber body can be continuously protected. Correspondingly, in two adjacent protection units, a distance is left between the support portion 9 of one protection unit and the elastic portion 8 of the other protection unit to form a deformation area 11 , so that the support portion 9 can tilt in the deformation area 11 .

[0045] In actual application, because the laying environment of special optical fiber is relatively complex, only some positions may need to be protected. For example, the position bypassing the wall needs to contact the wall ribs, which is easy to cause bending loss due to excessive deformation and is also easy to be squeezed and damaged by the wall ribs, while the part in contact with the wall surface may not need to be protected. Therefore, in the special optical fiber of the present invention, there is no need to cover the protective cover 7 all over the optical fiber body, and the protective cover 7 only needs to be set at the position that needs protection.

[0046] In order to further improve the strength of the special optical fiber and further improve the stability of the position of the protective cover 7, a fixed cover 4 is provided on the coating layer 3, and a plurality of raised strips 5 extending along the length direction of the optical fiber body are provided on the peripheral side wall of the outer skin 4. All raised strips 5 are evenly distributed along the circumferential direction of the optical fiber body, and a distance is left between two adjacent raised strips 5 to form a groove 6. When the protective cover 7 is sleeved on the optical fiber body, the first end of the elastic part 8 and the support part 9 are both against the bottom of the groove 6. The outer skin 4 can be made of the outer skin material of a conventional optical fiber, which will not be repeated here. By adding a thicker outer skin 4, the overall strength of the special optical fiber can be further improved. Furthermore, by providing the raised strips 5 and the grooves 6, the connection part between two adjacent protection units in the protective cover 7 can be limited to prevent the protective cover 7 from rotating. When the protective cover 7 is connected to the optical fiber body by applying the adhesive, it is also easier to operate.

[0047] Furthermore, in the direction from the first end to the second end, the distance between the elastic part 8 and the optical fiber body first gradually increases and then gradually decreases. With this arrangement, the elastic part 8 has a larger deformation space and can more effectively protect the optical fiber body.

[0048] If there are corrosion factors in the application environment of the special optical fiber, for example, if it is used in an area with high humidity, the corrosion rate of the protective sleeve 7 will be faster, and the protective sleeve 7 may be damaged and unable to continue to protect the optical fiber body. In order to avoid this situation, a heat shrink sleeve 12 is provided on the protective sleeve 7, and the heat shrink sleeve 12 can be fixed on the outer skin 4 through a binding member 17. More specifically, a plurality of annular positioning grooves 13 are provided on the outer skin 4. Accordingly, the heat shrink sleeve 12 has a coating portion 14 coated on the protective sleeve 7, and a conical transition portion 15 is connected to each of the two ends of the coating portion 14. The large end of the transition portion 15 is connected to the coating portion 14, and the small end of the transition portion 15 is sleeved on the optical fiber body. The binding member 17 can shrink into the annular positioning groove 13, thereby fixing the heat shrink sleeve 12. After the heat shrink sleeve 12 is fixed, the heat shrink sleeve 12 can be shrunk by heating, and tightly wrapped on the protective sleeve 7 to prevent the protective sleeve 7 from being corroded by external corrosion factors. It should be noted that the material of the heat shrink tube 12 is the existing technology, such as polyolefin, etc., which will not be repeated here. The binding member 17 can be a conventional cable tie or metal wire.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for manufacturing a high-strength special optical fiber, characterized in that: The steps include: Manufacturing an optical fiber body, the optical fiber body comprising a core (1), a cladding (2) and a coating layer (3); Manufacturing a protective sleeve (7), the protective sleeve (7) being annular and capable of being sleeved on the optical fiber body, the protective sleeve (7) comprising a plurality of integrally connected protective units evenly distributed along the circumferential direction of the optical fiber body, the protective units comprising an integrally connected elastic portion (8) and a supporting portion (9), the elastic portion (8) being arc-shaped; A plurality of protective covers (7) are sleeved on the optical fiber body. After the protective covers (7) are sleeved on the optical fiber body, the first end of the elastic part (8) abuts against the optical fiber body, and a distance is left between the second end of the elastic part (8) and the optical fiber body. The support part (9) is located between the second end of the elastic part (8) and the optical fiber body.

2. The method for manufacturing a high-strength special optical fiber according to claim 1, characterized in that: The method for manufacturing the protective cover (7) comprises: Cutting the metal strip into a plurality of rectangular metal sheets; Bending the metal sheet along the length direction, and fixing the two ends of the metal sheet together to form an annular metal belt (35); The annular metal belt (35) is extruded to form a plurality of the protection units, thereby obtaining the protection sleeve (7).

3. The method for manufacturing a high-strength special optical fiber according to claim 2, characterized in that: Before the metal strip is cut into a plurality of rectangular metal sheets, a plurality of through holes (10) evenly distributed along the length direction of the metal strip are punched out on the metal strip.

4. A manufacturing system for implementing the high-strength special optical fiber manufacturing method as claimed in any one of claims 3, characterized in that: The manufacturing system comprises: A stamping device, used for stamping a plurality of through holes (10) evenly distributed along the length direction of the metal strip on the metal strip; A cutting device, used for cutting the metal strip into a plurality of rectangular metal sheets; A first forming device, used for bending the metal sheet along the length direction and fixing the two ends of the metal sheet to form an annular metal belt (35); The second molding device is used for extruding the annular metal belt (35) to form a plurality of the protection units to obtain the protection sleeve.

5. The manufacturing system according to claim 4, characterized in that The stamping equipment comprises a feeding conveyor (18) for transporting the metal strip, the conveyor belt of the feeding conveyor (18) comprises two monomers (27), and a gap (28) is left between the two monomers (27), a stamping driver (20) is arranged above the gap (28), and the stamping driver (20) is driven and connected to a plurality of downward stamping heads (21), and a base (22) is fixedly arranged below the gap (28), and a plurality of stamping channels (23) corresponding to the stamping heads (21) are opened on the base (22), and all the stamping channels (23) are connected to a chip removal channel (24), and the chip removal channel (24) passes through the bottom of the base (22).

6. The manufacturing system according to claim 4, characterized in that The second molding device comprises a strip-shaped fixed die (30), the annular metal belt (35) can be sleeved on the fixed die (30), a plurality of shaping protrusions (31) are integrally connected to the peripheral side wall of the fixed die (30), a plurality of shaping blocks (33) are arranged on the peripheral side of the fixed die (30), the shaping blocks (33) are connected to an extrusion driver (34) for driving the shaping blocks (33) to approach or move away from the fixed die (30), and the shaping blocks (33) and the shaping protrusions (31) can cooperate with each other to extrude the annular metal belt (35) to form the protection unit.

7. A high-strength special optical fiber manufactured using the high-strength special optical fiber manufacturing method according to any one of claims 1 to 3, characterized in that: The high-strength special optical fiber comprises an optical fiber body and a plurality of protective sleeves (7) sleeved on the optical fiber body, the optical fiber body comprising a fiber core (1), a cladding (2) arranged on the surface of the fiber core (1), and a coating layer (3) covering the cladding (2), the protective sleeve (7) is annular and can be sleeved on the optical fiber body, the protective sleeve (7) comprises a plurality of integrally connected protection units and uniformly distributed along the circumferential direction of the optical fiber body, the protection unit comprises an integrally connected elastic portion (8) and a supporting portion (9), the elastic portion (8) is arc-shaped, when the protective sleeve (7) is sleeved on the optical fiber body, the first end of the elastic portion (8) abuts against the optical fiber body, and a distance is left between the second end of the elastic portion (8) and the optical fiber body, and the supporting portion (9) is located between the second end of the elastic portion (8) and the optical fiber body.

8. The high-strength special optical fiber according to claim 7, characterized in that: An outer skin (4) is fixedly sleeved on the coating layer (3), and a plurality of raised strips (5) extending along the length direction of the optical fiber body are arranged on the peripheral side wall of the outer skin (4), and all the raised strips (5) are evenly distributed along the circumferential direction of the optical fiber body, and a distance is left between two adjacent raised strips (5) to form a groove (6), and when the protective sleeve (7) is sleeved on the optical fiber body, the first end of the elastic part (8) and the support part (9) both abut against the bottom of the groove (6).

9. The high-strength special optical fiber according to claim 7, characterized in that: In the direction from the first end to the second end, the distance between the elastic portion (8) and the optical fiber body first gradually increases and then gradually decreases.

10. The high-strength special optical fiber according to claim 7, characterized in that: A heat shrink tubing (12) is sleeved on the protective sleeve (7), and the heat shrink tubing (12) can be fixed to the outer skin (4) via a binding piece (17).

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