Armored optical cable with spiral protective tube, manufacturing device and preparation method

Abstract

The invention discloses an armored optical cable with a spiral protection tube, a manufacturing device and a preparation method of the armored optical cable, and belongs to the technical field of optical cable preparation, the armored optical cable with the spiral protection tube comprises an optical unit and the spiral protection tube arranged on the periphery of the optical unit, and the spiral protection tube is formed by stranding and weaving linear fibers in the S or Z direction. The linear fibers are twisted, woven and cured into a whole; and the outer sheath is arranged on the periphery of the spiral protective tube. According to the armored optical cable with the spiral protection tube, the spiral protection tube is arranged in the center of the optical cable, the linear fibers formed by twisting and weaving have good bending performance and are suitable for network line arrangement, the linear fibers solidified into a whole have the good bending performance and also have the hardness and strength of a tube body, and therefore the armored optical cable is suitable for network line arrangement. The mouse is prevented from biting the internal optical unit; meanwhile, the tubular structure prepared from the fiber cannot generate voltage or current under the action of high voltage or an electromagnetic field, and is suitable for being used in a 5G base station or a high-voltage power supply environment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of optical cable preparation, and particularly relates to an armored optical cable with a spiral protective tube, a manufacturing device and a preparation method. BACKGROUND

[0002] The armored optical cable is an optical cable product with one or more layers of metal or non-metal sheath structure wrapped outside the ordinary optical cable. The protective structure added outside the optical cable makes the optical cable have stronger protection performance.

[0003] The armored optical cable is usually divided into metal armored and non-metal armored. The metal armored usually adopts aluminum tape or steel tape structure for coating to protect the internal optical fiber unit. The non-metal armored mainly adopts FRP rods to form a protective structure by surrounding the FRP rods. In the conventional rat-proof environment, the metal armored and the non-metal armored can both meet the rat-proof demand. However, in the 5G base station dense wiring area, the base station has a strong electromagnetic field, the metal armored can generate induced voltage and current, which affects the signal transmission. In the environment around the high-voltage power supply line, the high-voltage power supply line can generate a strong magnetic field, and the metal armored can generate eddy current due to electromagnetic induction, which causes the armored to heat up and affects the service life of the optical cable. Therefore, in the environment around the 5G base station or the high-voltage power supply line, the metal armored optical cable cannot be effectively used, and the non-metal armored optical cable needs to be used. The rat-proof mechanism of the non-metal optical cable is that glass fibers are doped in the FRP rods. When the rats bite the glass fibers, the rats will be injured, so the rats will not continue to bite after being injured. This also leads to the fact that rats continue to bite the optical cable in the long-term use process, and finally the FRP rods lose the protection ability and cannot effectively prevent rats. SUMMARY

[0004] In view of one or more of the above defects or improvement needs of the prior art, the present application provides an armored optical cable with a spiral protective tube to solve the problem that the FRP armored optical cable cannot effectively prevent rats in the environment of 5G base station or high-voltage power supply line.

[0005] To achieve the above-mentioned purpose, the present application provides an armored optical cable with a spiral protective tube, which comprises: an optical unit; a spiral protective tube, which is sleeved outside the periphery of the optical unit, and is formed by twisting and weaving linear fibers in the S or Z direction, and the linear fibers are solidified into one body after twisting and weaving; an outer sheath, which is wrapped outside the periphery of the spiral protective tube.

[0006] As a further improvement of the present application, the spiral protective tube is woven with carbon fibers, FRP or aramid fibers, and is solidified and formed by photocuring resin.

[0007] As a further improvement of the present application, the spiral weaving angle of the linear fiber in the spiral protection tube is 15-45 degrees, and the thickness of the spiral protection tube is 0.3-0.8 mm.

[0008] The present application also includes a preparation device of the armored optical cable with the spiral protection tube, which comprises: The first pay-off stand, the spiral protection tube winding assembly, the spiral protection tube curing assembly and the outer sheath extrusion assembly are arranged in sequence; The spiral protection tube winding assembly and the spiral protection tube curing assembly are provided with through holes for the light unit to pass through; The spiral protection tube winding assembly is also provided with a second pay-off stand, and a plurality of pay-off discs are arranged on the second pay-off stand; the wire outlet direction of each pay-off disc is provided with a first tension adjusting mechanism, and a glue coating assembly is further arranged between the first tension adjusting mechanism and the spiral protection tube winding assembly.

[0009] As a further improvement of the present application, the spiral protection tube winding assembly comprises a winding drum arranged along the light unit traction direction; At least one end of the winding drum is connected with a rotating mechanism; The outer cylinder wall of the winding drum is attached with a positioning glue cylinder, the outer periphery of the positioning glue cylinder is covered with an elastomer, and the positioning glue cylinder rotates synchronously with the winding drum.

[0010] As a further improvement of the present application, the outer diameter of the winding drum gradually decreases along the light unit traction direction, and the outer diameter of the positioning glue cylinder gradually increases along the light unit traction direction.

[0011] As a further improvement of the present application, the glue coating assembly comprises a glue coating pool, and a second tension adjusting mechanism is further arranged above the glue coating pool; The second tension adjusting mechanism comprises an inlet wheel and an outlet wheel arranged along the fiber traction direction, and a tension adjusting wheel is arranged between the inlet wheel and the outlet wheel, and the tension adjusting wheel is at least partially immersed in the glue in the glue coating pool.

[0012] As a further improvement of the present application, the glue in the glue coating assembly is UV glue, and the spiral protection tube curing assembly is a UV light curing furnace.

[0013] The present application also includes a preparation method of the armored optical cable with the spiral protection tube, which is used for preparing the armored optical cable with the spiral protection tube and comprises the following steps: S1, traction of the light unit; S2, winding of the fiber containing glue around the outer periphery of the light unit into a tube, and curing of the fiber into a spiral protection tube; S3, extrusion of an outer sheath around the outer periphery of the spiral protection tube; S4, cooling and forming the outer sheath to obtain the armored optical cable with the spiral protection pipe.

[0014] The above technical features can be combined with each other as long as they do not conflict with each other.

[0015] Overall, compared with the prior art, the above technical solutions conceived by the present application have the following beneficial effects: (1) The armored optical cable with the spiral protection pipe provided by the present application has a spiral protection pipe arranged at the center of the optical cable, the spiral protection pipe is woven by linear fibers and solidified into one body, the linear fibers twisted and woven have good bending performance and are suitable for network line arrangement, the linear fibers solidified into one body have the hardness and strength of the pipe body, which can prevent the internal optical unit from being bitten by a mouse; meanwhile, the fiber-based pipe structure has excellent dielectric insulation performance and will not generate induced potential and leakage current in a high-voltage electric field or an alternating magnetic field environment, which can effectively avoid the risk of optical cable breakdown and conventional metal reinforcing member discharge, and is suitable for stable operation in a strong electromagnetic environment such as a 5G base station / high-voltage power transmission and transformation equipment. The armored optical cable with the spiral protection pipe can be used in a higher voltage and stronger magnetic field environment, has the strength and toughness of the pipe body, will not be bitten by a mouse, effectively protects the internal optical fiber, and has good bending performance, which facilitates the bending wiring of the optical cable in a complex environment.

[0016] (2) The manufacturing device of the armored optical cable with the spiral protection pipe provided by the present application adds a spiral protection pipe winding assembly and a spiral protection pipe solidification assembly on the preparation line of the optical cable, directly winds and forms the spiral protection pipe on the outer periphery of the optical unit after the first pay-off reel pays out the optical unit, and then solidifies and forms to realize the winding and forming of the spiral protection pipe in the preparation process of the optical cable; meanwhile, the second pay-off reel, the first tension adjusting mechanism and the glue applying assembly are arranged on the side of the spiral protection pipe winding assembly, a plurality of second pay-off reels and first tension adjusting mechanisms can realize uniform-speed pay-off winding of multiple fibers to form a dense winding pipe structure on the spiral protection pipe winding assembly, and the glue applying assembly is mainly used for applying glue on the surface of the fiber, and after the spiral protection pipe winding assembly is formed into a tubular structure, the fiber surface glue is solidified by the spiral protection pipe solidification assembly, so that the fiber winding structure is solidified into the spiral protection pipe. The manufacturing device of the armored optical cable with the spiral protection pipe provided by the present application provides a molding system for molding the armored optical cable with the spiral protection pipe, realizes the addition of the spiral protection pipe in the optical cable without affecting the overall preparation process of the armored optical cable, and makes the armored optical cable have good tensile, bending and mouse-proof performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1is a cross-sectional structure schematic diagram of the armored optical cable with the spiral protection tube in the embodiment of the present application; Fig. 2 is a whole structure schematic diagram of the armored optical cable with the spiral protection tube in the embodiment of the present application; Fig. 3 is a whole structure schematic diagram of the manufacturing device of the armored optical cable with the spiral protection tube in the embodiment of the present application; Fig. 4 is a structure schematic diagram of the spiral protection tube solidification assembly in the manufacturing device of the armored optical cable with the spiral protection tube in the embodiment of the present application; Fig. 5 is a structure schematic diagram of the glue coating assembly in the manufacturing device of the armored optical cable with the spiral protection tube in the embodiment of the present application; Fig. 6 is a flow schematic diagram of the preparation method of the armored optical cable with the spiral protection tube in the embodiment of the present application.

[0018] In all the drawings, the same reference signs represent the same technical features, specifically: 1, optical fiber unit; 2, inner sheath; 3, spiral protection tube; 4, outer sheath; 5, spiral protection tube winding assembly; 6, spiral protection tube solidification assembly; 7, outer sheath extrusion assembly; 8, second pay-off reel; 9, glue coating assembly; 10, pre-curing furnace; 11, cooling assembly; 12, secondary traction assembly; 601, winding drum; 602, rotating motor; 603, positioning rubber cylinder; 801, pay-off reel; 802, first tension adjusting mechanism; 901, glue coating pool; 902, wire entry wheel; 903, wire exit wheel; 904, tension adjusting wheel. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0020] In the description of the present application, it needs to be understood that, unless otherwise specified, the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0021] In addition, unless otherwise specified, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0022] In the present application, unless otherwise specifically specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In the present application, unless otherwise specifically specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0024] Embodiment: Please refer to Figs. 1-6 The armored optical cable with spiral protection tube in the preferred embodiment of the present application comprises an optical unit, and a spiral protection tube 3 is further arranged on the outer periphery of the optical unit. The spiral protection tube 3 is twisted and woven in S or Z direction by linear fibers, and the linear fibers are solidified into one body after being twisted and woven. Meanwhile, an outer sheath 4 is further arranged on the outer periphery of the spiral protection tube 3.

[0025] The armored optical cable with the spiral protection pipe in the application is provided with a spiral protection pipe 3 in the center of the optical cable, the spiral protection pipe 3 is woven by linear fibers and solidified into one body, the linear fibers twisted and woven have good bending performance and are suitable for network line arrangement, the linear fibers solidified into one body have the hardness and strength of the pipe body, and the mouse cannot bite the internal optical unit; meanwhile, the fiber-based pipe structure has excellent dielectric insulation performance, and no induced potential and leakage current can be generated in the high-voltage electric field or alternating magnetic field environment, the optical cable can effectively avoid the risk of breakdown and discharge of the conventional metal reinforcing member, and is suitable for stable operation in the strong electromagnetic environment of the 5G base station / high-voltage power transmission and transformation equipment. The armored optical cable with the spiral protection pipe in the application can be used in the high-voltage and strong magnetic field environment, has the strength and toughness of the pipe body, cannot be bitten by the mouse, effectively protects the internal optical fiber, and has good bending performance, so that the optical cable can be conveniently bent and arranged in the complex environment.

[0026] Further, as an optional embodiment of the application, the spiral protection pipe 3 is woven by carbon fibers, FRP or aramid fibers and is solidified and formed by photocuring resin. Preferably, the spiral angle of the fiber weaving in the spiral protection pipe 3 is 15°~45°, and the overall thickness of the spiral protection pipe 3 is 0.3~0.8mm. Preferably, the linear fiber for weaving the spiral protection pipe 3 in the application is a high modulus fiber, and the tensile modulus is 280GPa~900GPa.

[0027] Further, as an optional embodiment of the application, the optical unit comprises at least one optical fiber unit 1, an inner sheath 2 arranged at the outer periphery of the optical fiber unit 1, and the space between the optical fiber unit 1 and the inner sheath 2 is filled with fiber paste. The armored optical cable with the spiral protection pipe in the application adopts the spiral protection pipe 3 as the protection structure and the tensile structure, and no reinforcing member is arranged in the interior, and the overall bending performance of the optical cable is good. In the application, the fiber paste is filled between the optical fiber unit 1 and the inner sheath 2, the flowable fiber paste makes the internal optical fiber unit 1 have a certain activity space, has better bending performance, and reduces the bending loss of the optical fiber unit 1. The optical fiber unit 1 in the application is a basic functional unit for optical signal transmission, which comprises a fiber core layer, a cladding layer and a coating layer arranged at the outer periphery of the fiber core layer in sequence, and a sheath arranged at the outer periphery of the coating layer.

[0028] Further, as an optional embodiment of the application, the armored optical cable with the spiral protection pipe in the application has a tensile strength of 1000N~3000N, a bending loss of ≤0.05dB, a minimum bending radius of 5D (D is the diameter of the optical cable), and an anti-puncture force of not less than 1000N.

[0029] Further, as an optional embodiment of the present application, the outer sheath 4 in the present application is prepared from low-smoke halogen-free flame-retardant polyolefin, polyurethane or fluororubber, and the overall thickness of the outer sheath 4 is 0.6-1.2 mm. The outer sheath 4 prepared from low-smoke halogen-free flame-retardant polyolefin, polyurethane or fluororubber makes the optical cable have better flame-retardant property and weather resistance, so that the optical cable meets the environmental protection standard and the service life of the optical cable is extended to more than 25 years. Further, as an optional embodiment of the present application, the present application further includes a manufacturing device of the armored optical cable with the spiral protection tube, which is used for preparing the armored optical cable with the spiral protection tube, and includes a first pay-off stand (not shown), a spiral protection tube winding assembly 5, a spiral protection tube curing assembly 6 and an outer sheath extruding assembly 7 arranged in sequence along the manufacturing direction of the optical cable, and the spiral protection tube winding assembly 5 and the spiral protection tube curing assembly 6 are provided with through holes for the optical unit to pass through; meanwhile, the spiral protection tube winding assembly 5 is further provided with a second pay-off stand 8 on one side, the second pay-off stand 8 is provided with a plurality of pay-off reels 801, and a first tension adjusting mechanism 802 is arranged in the outgoing direction of each pay-off reel 801, and a glue coating assembly 9 is further arranged between the first tension adjusting mechanism 802 and the spiral protection tube winding assembly 5.

[0030] The manufacturing device of the armored optical cable with the spiral protection tube in the present application adds the spiral protection tube winding assembly 5 and the spiral protection tube curing assembly 6 on the preparation line of the optical cable, directly winds and forms the spiral protection tube 3 on the outer periphery of the optical unit after the first pay-off stand pays out the optical unit, and then cures and forms, so as to realize the winding and forming of the spiral protection tube 3 in the preparation process of the optical cable; meanwhile, the spiral protection tube winding assembly 5 is provided with the second pay-off stand 8, the first tension adjusting mechanism 802 and the glue coating assembly 9 on the side, a plurality of second pay-off stands 8 and first tension adjusting mechanisms 802 can realize the uniform-speed pay-off winding of a plurality of fibers, so as to form a dense winding tube structure on the spiral protection tube winding assembly 5, and the glue coating assembly 9 is mainly used for coating glue on the surface of the fiber, and after the spiral protection tube winding assembly 5 is formed into a tubular structure, the fiber surface glue is cured by the spiral protection tube curing assembly 6, so that the fiber winding structure is cured into the spiral protection tube 3. The manufacturing device of the armored optical cable with the spiral protection tube in the present application provides a forming system for forming the armored optical cable with the spiral protection tube, realizes the addition of the spiral protection tube 3 in the optical cable without affecting the overall preparation process of the armored optical cable, and makes the armored optical cable have better tensile, bending and rat-proof properties.

[0031] Further, as an optional embodiment of the present application, the spiral protective tube winding assembly 5 comprises a winding drum 601 arranged along the pulling direction of the light unit, the winding drum 601 is provided with an axial through hole for the light unit to pass through, and the outer side of the winding drum 601 is used for fiber winding into a tube. At least one end of the winding drum 601 is connected with a rotating mechanism to drive the whole winding drum to rotate, so that the fiber discharged from the second pay-off stand 8 is wound into a tube on the outer side of the winding drum 601. At the same time, the outer tube wall of the winding drum 601 is attached with a positioning rubber tube 603, the outer periphery of the positioning rubber tube 603 is covered with an elastic body, and the elastic body is pressed against the surface of the winding drum 601. When the winding drum 601 rotates, the positioning rubber tube 603 is pressed against the surface of the winding drum 601 and rotates with it, and the fiber pulled on the surface of the winding drum 601 is correspondingly attached to the surface of the winding drum 601 and wound into a cylindrical structure.

[0032] Further, as an optional embodiment of the present application, the outer diameter of the winding drum 601 gradually decreases along the pulling direction of the light unit, and the outer diameter of the positioning rubber tube 603 gradually increases along the pulling direction of the light unit, so that the positioning rubber tube 603 is attached to the surface of the winding drum 601. The outer diameter of the winding drum 601 is arranged in a gradually decreasing form, so that the inner diameter of the fiber gradually decreases during winding on the winding drum 601, the fibers are gradually pressed against each other, and the fiber wound into a tube is conveniently separated from the winding drum 601 for solidification in the spiral protective tube solidification assembly.

[0033] Optionally, the rotating mechanism comprises a rotating motor 602, and the rotating motor 602 is connected with the winding drum 601 through a belt. The two ends of the winding drum 601 are connected with a mounting frame through a ball bearing, and the mounting frame enables the winding drum 601 to be stably sleeved outside the light unit.

[0034] Further, as an optional embodiment of the present application, the glue applying assembly 9 in the present application specifically comprises a glue pool 901, in which glue is stored; a second tension adjusting mechanism is further arranged above the glue pool 901, which comprises an incoming thread wheel 902 and an outgoing thread wheel 903 arranged along the fiber traction direction, and a tension adjusting wheel 904 is further arranged between the incoming thread wheel 902 and the outgoing thread wheel 903, which is at least partially immersed in the glue. The plurality of fibers drawn out via the first tension adjusting mechanism converge at the incoming thread wheel 902, then are wound to the tension adjusting wheel 904, and finally are drawn to the outgoing thread wheel 903 to complete the glue coating, and finally are drawn to the spiral protection tube winding assembly 5 through the outgoing thread wheel 903. The present application first synchronously draws each fiber through the pay-off reel 801 and the first tension adjusting mechanism 802, so that the winding line formed by the plurality of fibers at the incoming thread wheel 902 is uniform and dense as a whole, and after the glue coating, the winding fiber is easy to relatively slide with the outgoing thread wheel 903, so the tension adjusting wheel 904 is arranged to adjust the outgoing rate of the winding fiber, so as to ensure that the winding fiber wound from the outgoing thread wheel 903 to the spiral protection tube winding assembly 5 is supplied at a uniform rate, and the overall forming strength of the spiral protection tube 3 is ensured.

[0035] Further, as an optional embodiment of the present application, the glue in the glue applying assembly 9 in the present application is UV glue, and the spiral protection tube curing assembly 6 is a UV light curing furnace. The present application relates to the overall preparation of armored optical cable, and after the spiral protection tube 3 is formed, an outer sheath 4 needs to be extruded and formed outside, so the glue is subjected to secondary heating after curing and forming. In order to avoid the melting of the glue during the extrusion and forming process of the outer sheath 4, UV glue is selected in the forming process of the spiral protection tube 3, and the UV light curing furnace is used to cure and form the spiral protection tube 3, so that the problem of pipe body deformation caused by the softening of the glue during the extrusion and forming process of the outer sheath 4 is avoided, and the overall strength of the formed spiral protection tube 3 is ensured.

[0036] Further, as an optional embodiment of the present application, a pre-curing furnace 10 is further arranged between the glue applying assembly 9 and the spiral protection tube winding assembly 5, which is also a curing structure, and is mainly used for preliminarily curing the glue coated on the surface of the fiber, so as to avoid the glue from dripping everywhere and spreading to the surface of the optical unit after being soaked on the spiral protection tube winding assembly 5, so that the rear optical unit is integrated with the spiral protection tube 3. On the other hand, after the glue is preliminarily cured, the relative sliding of the fiber on the surface of the spiral protection tube 3 can be avoided, and after being cured by the pre-curing furnace 10, the glued fiber is preliminarily integrated, and when being wound on the winding pipe, the fiber is orderly arranged on the surface of the winding pipe to form a tubular structure, and then is integrated by the spiral protection tube curing assembly 6.

[0037] Further, as an optional embodiment of the present application, the outer sheath extrusion assembly 7 in the application is further sequentially connected with a cooling assembly 11 and a secondary traction assembly 12 in the optical cable manufacturing direction, the cooling assembly 11 is mainly used for cooling and shaping the extruded outer sheath 4, and the secondary traction assembly 12 is mainly used for controlling the excess length of the optical cable. The armored optical cable with the spiral protection tube in the application does not set a reinforcing member in the optical cable, and the whole bears the tensile force through the spiral protection tube 3, and the anti-shrinkage ability of the spiral protection tube 3 with good bending performance is weaker than that of the traditional reinforcing member. Based on this, the secondary traction assembly 12 is arranged after the cooling assembly, which is used for controlling the excess length of the optical cable.

[0038] Optionally, the secondary traction assembly 12 adopted in the application belongs to a common two-set traction device in the production of optical cables, and any two-set traction device for adjusting the excess length of the optical cable in the prior design can be used as the secondary traction assembly 12 in the application, which will not be described here.

[0039] Further, a take-up device is arranged in the outgoing direction of the secondary traction assembly 12, and the take-up device and the secondary traction assembly 12 are synchronously tractioned through a balance wheel to wind and store the formed armored optical cable with the spiral protection tube, thereby facilitating the storage and transportation of the optical cable.

[0040] The working process of the manufacturing device of the armored optical cable with the spiral protection tube in the application is as follows: the first pay-off rack pays out the optical unit, the optical unit is tractioned to pass through the spiral protection tube winding assembly 5, the spiral protection tube curing assembly 6 and the outer sheath extrusion assembly 7; the second pay-off rack 8 pays out a plurality of fibers, the plurality of fibers are wound into a bundle, then the glue is coated on the surface of the bundled fibers, the glue is preliminarily cured, then the preliminarily cured bundled fibers are wound on the spiral protection tube winding assembly 5, the bundled fibers are wound into a tube and formed on the outer periphery of the optical unit; the bundled fibers wound into a tube are cured into a tube under the action of the spiral protection tube curing assembly 6, so as to form the spiral protection tube 3 on the outer periphery of the optical unit, the outer sheath extrusion assembly 7 extrudes and forms the outer sheath 4 on the outer periphery of the spiral protection tube 3, and the armored optical cable with the spiral protection tube is obtained by cooling and forming, and then the armored optical cable with the spiral protection tube is wound and stored.

[0041] Further, as an optional embodiment of the present application, the application further includes a preparation method of the armored optical cable with the spiral protection tube, which includes the following steps: S1, traction of the optical unit; S2, winding the fibers containing glue into a tube on the outer periphery of the optical unit, and curing the fibers into the spiral protection tube 3; S3, extruding the outer sheath 4 on the outer periphery of the spiral protection tube 3; S4, cooling and forming the outer sheath 4 to obtain the armored optical cable with the spiral protection tube.

[0042] Further, as an optional embodiment of the present application, step S2 specifically comprises: A winding drum 601 is arranged in the traction direction of the optical unit, and the optical unit is passed through the inside of the winding drum 601; The plurality of fibers are pulled aside the winding drum 601, the glue is coated on the surface of the plurality of fibers, and the plurality of fibers are bundled, and the bundled fibers are wound on the surface of the winding drum 601 at a set angle and formed into a tubular structure; The fibers are cured into the spiral protection tube 3 by using a curing device.

[0043] Further, as an optional embodiment of the present application, before the fibers coated with the glue are wound on the winding drum 601, the glue on the fibers is preliminarily cured.

[0044] Further, as an optional embodiment of the present application, after the outer sheath 4 is cooled and formed, the armored optical cable with the spiral protection tube is secondarily pulled and stretched.

[0045] Those skilled in the art will easily understand that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An armored optical cable with a spiral protective tube, characterized in that: include: Light unit; A spiral protective tube, which is sleeved on the outer periphery of the optical unit and is formed by twisting and weaving linear fibers in the S or Z direction, and the linear fibers are twisted and weaved and then solidified into one; An outer sheath is wrapped around the outer circumference of the spiral protective tube.

2. The armored optical cable with a spiral protective tube according to claim 1, characterized in that: The spiral protective tube is woven with carbon fiber, FRP or aramid and is cured and formed with light-curing resin.

3. The armored optical cable with a spiral protective tube according to claim 1, characterized in that: The spiral braiding angle of the linear fibers in the spiral protective tube is 15° to 45°, and the thickness of the spiral protective tube is 0.3 to 0.8 mm.

4. A device for preparing an armored optical cable with a spiral protective tube, characterized in that: It includes a first pay-off frame, a spiral protective tube winding assembly, a spiral protective tube curing assembly and an outer sheath extrusion assembly which are arranged in sequence; The spiral protective tube winding assembly and the spiral protective tube curing assembly are provided with through holes for the light unit to pass through; A second pay-off rack is also provided on one side of the spiral protective tube winding assembly, and a plurality of pay-off drums are provided on the second pay-off rack. A first tension adjustment mechanism is provided in the outlet direction of each pay-off drum, and a glue coating assembly is also provided between the first tension adjustment mechanism and the spiral protective tube winding assembly.

5. The device for preparing an armored optical cable with a spiral protective tube according to claim 4, characterized in that: The spiral protection tube winding assembly includes a winding drum arranged along the pulling direction of the light unit; At least one end of the winding drum is connected to a rotating mechanism; A positioning rubber cylinder is attached to the outer cylinder wall of the winding cylinder, and the outer periphery of the positioning rubber cylinder is covered with an elastic body. The positioning rubber cylinder rotates synchronously with the winding cylinder.

6. The device for preparing an armored optical cable with a spiral protective tube according to claim 5, characterized in that: The outer diameter of the winding drum gradually decreases along the pulling direction of the light unit, and the outer diameter of the positioning rubber cylinder gradually increases along the pulling direction of the light unit.

7. The device for preparing an armored optical cable with a spiral protective tube according to claim 4, characterized in that: The gluing assembly includes a gluing pool, and a second tension adjustment mechanism is provided above the gluing pool; The second tension adjustment mechanism includes an inlet wheel and an outlet wheel arranged along the fiber pulling direction, and a tension adjustment wheel is provided between the inlet wheel and the outlet wheel. The tension adjustment wheel is at least partially immersed in the glue in the glue coating pool.

8. The device for preparing an armored optical cable with a spiral protective tube according to claim 4, characterized in that: The glue in the gluing component is UV glue, and the spiral protective tube curing component is a UV light curing furnace.

9. The device for preparing an armored optical cable with a spiral protective tube according to claim 4, characterized in that: A pre-curing furnace is also provided between the glue coating assembly and the spiral protective tube winding assembly.

10. A method for preparing an armored optical cable with a spiral protective tube, for preparing the armored optical cable with a spiral protective tube as claimed in any one of claims 1 to 3, characterized in that: The steps include: S1, traction light unit; S2, winding the glue-containing fiber into a tube around the outer periphery of the optical unit, and solidifying the fiber into a spiral protective tube; S3, extruding an outer sheath on the outer periphery of the spiral protective tube; S4. Cooling and forming the outer sheath to obtain an armored optical cable with a spiral protective tube.

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