CN109814219B - Optical cable convenient to open and peel and manufacturing equipment thereof - Google Patents
Optical cable convenient to open and peel and manufacturing equipment thereof Download PDFInfo
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- CN109814219B CN109814219B CN201910294905.7A CN201910294905A CN109814219B CN 109814219 B CN109814219 B CN 109814219B CN 201910294905 A CN201910294905 A CN 201910294905A CN 109814219 B CN109814219 B CN 109814219B
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Abstract
The invention discloses an optical cable convenient to peel and manufacturing equipment thereof, and belongs to the technical field of optical cables. The optical cable comprises a cable core and a corrugated steel belt coated on the periphery of the cable core, wherein two tearing grooves are formed in the side wall of the corrugated steel belt close to the side of the cable core; the two tearing grooves are distributed on the corrugated steel strip in a central symmetry way; each tearing groove is internally provided with a tearing rope. The manufacturing equipment is used for manufacturing the optical cable and comprises an embossing device; the embossing device comprises a convex roller and a concave roller, and third bulges are arranged on the outer circumferential surface of the convex roller; and the outer circumferential surface of the concave roller is provided with a third groove, and the tearing groove of the corrugated steel strip is formed by rolling and pressing the third bulge and the third groove. The tearing grooves are formed in the corrugated steel belt to place the tearing ropes, so that the tearing ropes are distributed on the optical cable in a centrosymmetric manner, and the stripping efficiency is improved; the tearing groove and the embossing of the corrugated steel strip are formed simultaneously, so that the production process is simplified.
Description
Technical Field
The invention relates to the technical field of optical cables, in particular to an optical cable convenient to peel and manufacturing equipment thereof.
Background
With the development of optical communication technology, various optical cables such as all-dielectric self-supporting optical cables and layer-stranded aerial optical cables are being widely used as information transmission media. Taking a layer-stranded hollow optical cable as an example, because the optical fibers are filaments drawn by quartz and are easy to break, a plurality of optical fibers can be placed in a loose sleeve to form a cable core during production, water-blocking factice is filled in the loose sleeve, then a reinforced core and a longitudinal corrugated steel belt are inserted, and finally a polyethylene protective layer is adopted for extrusion molding, so that the mechanical strength of the optical cable is improved, and the optical cable also has the moisture-proof and insect-proof performance.
In the laying construction process of the optical cable, in order to improve the stripping speed of the optical cable, at least one tearing rope is usually arranged between the cable core and the corrugated steel belt of the existing optical cable, so that a constructor can utilize the stripping knife to complete stripping of the optical cable, the optical cable is quickly torn by the tearing rope, the cable core cannot be damaged, and the cable core and the protective layer can be prevented from being adhered. However, the outer surface of the corrugated steel strip is usually provided with the embossed patterns which are in a wavy and undulating state, and the tearing ropes arranged on the corrugated steel strip are easy to roll and deviate on the corrugated steel strip in the production, transportation and stripping processes, so that the plurality of tearing ropes cannot be distributed in central symmetry, even can be twisted with each other, the appearance roundness of the optical cable is influenced, the stripping efficiency is reduced, and the laying speed of the optical cable is reduced.
Accordingly, it is desirable to provide an optical cable and a manufacturing apparatus thereof that are easy to peel.
Disclosure of Invention
The invention aims to provide an optical cable convenient to strip, which ensures that tearing ropes are distributed on the cross section of the optical cable in a centrosymmetric manner while ensuring the appearance roundness of the optical cable, and improves the stripping efficiency.
It is another object of the present invention to provide a manufacturing apparatus for manufacturing an optical cable that is easy to be stripped.
In order to realize the purpose, the following technical scheme is provided:
an optical cable convenient to peel comprises a cable core and a corrugated steel belt coated on the periphery of the cable core, and is characterized in that two tearing grooves are formed in the side wall of the corrugated steel belt, which is close to the cable core side; the two tearing grooves are distributed on the corrugated steel strip in a central symmetry way; each tearing groove is internally provided with a tearing rope.
Further, the tearing groove extends along the length direction of the optical cable.
Further, the cross-sectional shape of the tear groove may be U-shaped, V-shaped, or arc-shaped.
A manufacturing apparatus for an optical cable in the above aspect, the manufacturing apparatus comprising an embossing device; the embossing device comprises a convex roller and a concave roller, and third bulges are arranged on the outer circumferential surface of the convex roller; the third bulge is of an annular structure concentric with the convex roller;
a third groove is formed in the outer circumferential surface of the concave roller, and the third groove is of an annular structure concentric with the concave roller; the tearing groove of the corrugated steel strip is formed by the third bulge and the third groove in a rolling and pressing mode.
Further, the third protrusion and the third groove are provided in two.
Furthermore, the manufacturing equipment also comprises a pay-off device, wherein the pay-off device comprises a pay-off bracket, a pay-off disc arranged on the pay-off bracket and a first wire passing guide wheel; the two pay-off reels and the two first wire guide wheels are arranged and correspond to each other one by one;
the tearing rope is wound on the pay-off reel; the outer circumferential surface of the first wire guide wheel is provided with a wire passing groove; the tearing rope is guided by the first wire passing guide wheel and then is output in the tangential direction of the wire passing groove;
the tangent direction of the tearing rope output by the wire passing groove of the first wire passing guide wheel is overlapped with the central axis of the tearing groove of the corrugated steel strip.
Further, the manufacturing equipment further comprises a longitudinal wrapping device and a wire collecting device; indulge the package device including indulging the package platform, take-up is located indulge the front end of package platform, pay-off is located embossing apparatus with indulge between the package platform.
Furthermore, two second wire guide wheels are arranged on the longitudinal wrapping table, and each first wire guide wheel corresponds to one second wire guide wheel; the tearing rope is guided by the first wire guide wheel and the second wire guide wheel in sequence, and the output direction is kept unchanged.
Further, the position of the first wire guide wheel relative to the wire releasing bracket is adjustable; the position of the second wire guide wheel relative to the longitudinal covering table is adjustable.
Furthermore, the manufacturing equipment also comprises a laser monitoring device, and the laser monitoring device is arranged at the rear end of the longitudinal wrapping table; the laser monitoring device emits a laser beam which is coincident with the central axis of the tearing groove.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, the tearing grooves are formed in the corrugated steel belt to place the tearing ropes, so that the tearing ropes can be stably placed in the tearing grooves, the problem that the tearing ropes are easy to roll and deviate on the surface of the corrugated steel belt is effectively solved, the central symmetrical distribution of the tearing ropes on the cross section of the optical cable is ensured, the phenomenon of mutual twisting among the tearing ropes is avoided, the roundness of the appearance of the optical cable is further ensured, and the stripping efficiency is improved.
2) According to the invention, the convex roller and the concave roller of the original embossing device are improved, and the third bulge and the third groove are arranged along the circumferential direction, so that the tearing groove arranged along the length direction is formed on the corrugated steel strip, and the tearing groove and the embossing of the corrugated steel strip are formed simultaneously, thus the production process is simplified, and the production cost is reduced.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention in which the ripcords are not centrally symmetrically disposed in a cross-section of the fiber optic cable;
FIG. 2 is a schematic view of a centrally symmetric distribution of ripcords in a cross-section of a fiber optic cable according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an embodiment of the present invention illustrating asymmetric tearing of a fiber optic cable;
FIG. 4 is a schematic view of a symmetrical tear of a fiber optic cable according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a fiber optic cable having a tear groove in an embodiment of the present invention;
FIG. 6 is a schematic view of the construction of a male roll in an embodiment of the present invention;
FIG. 7 is a schematic view of a construction of a female roller in an embodiment of the present invention;
FIG. 8 is a schematic view of the nip of a male roller and a female roller in an embodiment of the present invention;
FIG. 9 is a schematic diagram of the operation of an embossing apparatus according to an embodiment of the present invention;
FIG. 10 is a cross-sectional view taken along the line A-A in FIG. 9;
FIG. 11 is a top view of FIG. 9;
FIG. 12 is a flow chart illustrating the manufacture of a fiber optic cable according to an embodiment of the present invention;
FIG. 13 is a schematic view of the structure of the pay-off device and the longitudinal wrapping table in the embodiment of the invention.
Reference numerals:
1-an optical cable; 11-a cable core; 111-loose tube; 112-an optical fiber; 12-a corrugated steel strip; 121-tear groove; 13-tearing the rope; 14-a protective sleeve;
2-an embossing unit; 21-a convex roller; 211 — a first recess; 212-a first projection; 213-third protrusions; 22-concave roller; 221-a second groove; 222-a second projection; 223-a third groove;
3-a longitudinal wrapping device; 31-longitudinal wrapping table; 32-shaping mold; 33-sizing a sizing die;
4-an extrusion molding device;
5-a pay-off device; 51-a pay-off stand; 52-a pay-off reel; 53-first wire guide wheel; 531-wire passing groove; 54-second wire guide wheel;
6-laser monitoring device.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment discloses an optical cable convenient to peel and manufacturing equipment thereof. Fig. 1-2 show a cable 1 provided with two ripcords 13, comprising a core 11, a corrugated steel strip 12 covering the core 11 and a protective jacket 14, the core 11 comprising a plurality of loose tubes 111 and a plurality of bundles of optical fibers 112 arranged inside the loose tubes 111. As can be seen in FIG. 1, two ripcords 13 are present in the cross-section of the cable 1The upper part of the optical cable 1 is distributed in a non-centrosymmetric way, the included angle between the tearing rope 13 and the central connecting line of the optical cable 1 is less than 180 degrees, and the optical cable 1 is stripped under the condition that the optical cable cannot be completely stripped. In this embodiment, the two tearing ropes 13 are respectively a first tearing rope and a second tearing rope, and as shown in fig. 3, when the first tearing rope and the second tearing rope are distributed at an included angle smaller than 180 degrees, the first tearing rope generates a tearing force F1The second tearing rope generates a tearing force F2Tear force F1At theta to the X axis1Angle setting, tearing force F2At theta to the X axis2And setting an angle. By splitting the two tearing forces, it is obtained that the two tearing forces respectively generate F on the X axis1XAnd F2XComponent force of (2), generating F on the Y axis1YAnd F2YOf the component (c). The circle in fig. 3 represents a cross section of the optical cable 1, and it can be seen that, under the action of the component force, the effective tearing area of the tearing rope 13 is a local fan-shaped area (i.e. the shaded area in fig. 3), because the component forces of the two tearing forces in the Y-axis are in the same direction, so that the areas except the fan-shaped area cannot be torn, which is not beneficial to the effective stripping of the optical cable 1. When the first tearing rope and the second tearing rope are distributed on the optical cable 1 in central symmetry, that is, the included angle between the tearing rope 13 and the central connecting line of the optical cable 1 is 180 degrees, as shown in fig. 4, two tearing forces respectively generate F on the X axis1XAnd F2XComponent force of (2), generating F on the Y axis1YAnd F2YComponent of (a); the circle in fig. 4 represents the cross section of the optical cable 1, under the action of the component force, the effective tearing area of the tearing rope 13 is a sector area (i.e. a shaded area in fig. 4) in the figure, and because the component force directions of the two tearing forces on the Y axis are opposite, the optical cable 1 can be completely stripped under the action of the component forces, so that the time and labor are saved, and the stripping efficiency is high.
When the optical cable 1 is produced, an operator places the tear ropes 13 on the inner side of the corrugated steel strip 12 in a centrosymmetric manner by depending on experience, but due to embossing on the corrugated steel strip 12 and uncontrollable factors existing in the production and manufacturing process, the tear ropes 13 in the finished optical cable 1 cannot be effectively guaranteed to be centrosymmetrically distributed. Therefore, in the present embodiment, the side wall of the corrugated steel strip 12 on the side close to the cable core 11 is provided with the tear groove 121, the tear groove 121 is provided to extend in the longitudinal direction of the optical cable 1, and the tear string 13 is placed in the tear groove 121 so that the tear string 13 does not shift and does not roll. Optionally, the number of tearing grooves 121 is set to two, and two tearing grooves 121 are centrosymmetrically distributed on the corrugated steel strip 12, so that the tearing rope 13 can be centrosymmetrically distributed outside the cable core 11 during production, transportation and use, the phenomenon of mutual twisting between the tearing ropes 13 is avoided, the roundness of the appearance of the optical cable 1 is further ensured, and the problem of low stripping efficiency of the tearing rope 13 is solved. Typically, the tear string 13 is circular in cross-section. Thus, tear groove 121 may alternatively be arcuate in cross-sectional shape. Further, in order to facilitate the insertion of the tear string 13 into the tear groove 121, the tear groove 121 is provided in a semicircular shape or a minor arc. In other embodiments, as shown in fig. 5, tear groove 121 is optionally V-shaped in cross-sectional shape; in addition, the tip of the V-shaped groove may also form stress concentration, and the tearing force acts in the radial direction of the optical cable 1 to complete the tearing with a small tearing force. In some other embodiments, tear groove 121 is optionally U-shaped in cross-section. It is noted that whatever shape of the tear-off groove 121, its dimensions are such that the tear-off string 13 is at least partially accommodated therein and ensures a stable placement. Optionally, the tear string 13 in this embodiment is made of polyester.
In order to realize the formation of the tearing groove 121 in the corrugated steel strip 12, the conventional steel strip embossing device 2 is modified, and mainly a corrugated roller of the embossing device 2 is modified. Generally, the embossing device 2 includes a male roller 21 and a female roller 22, the steel strip is conveyed between the male roller 21 and the female roller 22, and then pressed together to form the corrugated steel strip 12, and further conveyed to a longitudinal wrapping table 31 to be longitudinally wrapped and formed together with the tear string 13, and the corrugated steel strip 12 is formed into a circular structure from a rectangular structure. Fig. 6 is a schematic structural view of a male roll, and fig. 7 is a schematic structural view of a female roll, wherein a plurality of first grooves 211 are uniformly formed on the outer circumferential surface of the male roll 21; first protrusions 212 are formed between two adjacent first grooves 211, and the first protrusions 212 and the first grooves 211 extend along the central axis direction of the male roller 21. Accordingly, a plurality of second grooves 221 are also uniformly formed in the outer circumferential surface of the concave roller 22, a second protrusion 222 is formed between two adjacent second grooves 221, and both the second protrusion 222 and the second groove 221 are arranged to extend in the central axis direction of the concave roller 22. As shown in fig. 8, when embossing is performed, the male roller 21 and the female roller 22 are arranged one above the other, the steel strip passes through between the male roller 21 and the female roller 22, the driving device drives the male roller 21 and the female roller 22 to rotate, the first protrusions 212 of the male roller 21 are correspondingly clamped into the second grooves 221 of the female roller 22, the first grooves 211 of the male roller 21 are correspondingly clamped into the second protrusions 222 of the female roller 22, and wrinkles are pressed on the surface of the steel strip to form the wrinkled steel strip 12. In this embodiment, the concave roller 22 is provided above the convex roller 21. Further, third projections 213 are provided on the outer circumferential surface of the male roller 21 in order to form the tear grooves 121 in the corrugated steel strip 12. The third protrusions 213 are formed in a ring shape concentric with the convex roller 21 and are formed to protrude from the outer circumferential surface of the convex roller 21 by a certain height. Alternatively, the third protrusions 213 may include partial protrusions protruding from the outer circumferential surface of the male roller 21 and a filler disposed in the first grooves 211, and the filler may increase the connection strength between the third protrusions 213 and the male roller 21, and may uniform the pressing force when the male roller 21 and the female roller 22 are pressed together. Correspondingly, a third groove 223 is formed on the outer circumferential surface of the concave roller 22, the third groove 223 is of an annular structure concentric with the concave roller 22, and the third groove 223 and the second groove 221 are discontinuously overlapped, so that the third groove 223 forms sub-grooves which are discontinuously distributed on the second protrusion 222. In particular, as shown in fig. 9 to 11, after being rolled by the improved embossing apparatus 2, the corrugated steel strip 12 has not only the embossings along the width direction of the corrugated steel strip 12 formed by the mutually cooperating first recesses 211 and second protrusions 222 (or the first protrusions 212 and the second recesses 221), but also the tearing grooves 121 formed by the cooperatively cooperating third protrusions 213 and third recesses 223, and the tearing grooves 121 are arranged along the length direction of the corrugated steel strip 12. Through improving the convex roller 21 and the concave roller 22 of the original embossing device 2 and arranging the third protrusion 213 and the third groove 223 along the circumferential direction, the tearing groove 121 arranged along the length direction is formed on the corrugated steel strip 12, the tearing groove 121 can be formed simultaneously with the embossing of the corrugated steel strip 12, the production process is simplified, and the production cost is reduced.
Alternatively, both third projection 213 and third groove 223 may be provided in two, and two tear grooves 121 may be pressed in corrugated steel strip 12. Further, as shown in fig. 11, in order to ensure that the tearing grooves 121 are distributed in central symmetry on the cross section of the circular corrugated steel strip 12 after the corrugated steel strip 12 is longitudinally wrapped, when the corrugated steel strip 12 is not longitudinally wrapped, that is, is still rectangular, the vertical distance d between the two tearing grooves 121 is the same as the diameter of the circular corrugated steel strip 12 after the longitudinal wrapping. In practical application, the sectional shapes of the partial protrusions of the third protrusions 213 and the partial grooves of the third grooves 223 can be designed to be conformal according to the shape and structure of the tear groove 121. For example, if the tear groove 121 has a U-shaped structure, the cross sections of the third protrusion 213 and the third groove 223 are also designed to be U-shaped, so as to obtain a U-shaped tear groove, and the other forms of tear grooves are similar to this, and will not be described again here.
Further, considering that the corrugated steel strip 12 undergoes a certain plastic expansion during the longitudinal wrapping molding and the dimension of the tear groove 121 in the width direction of the corrugated steel strip 121 shrinks, a certain margin is provided for the dimension of the tear groove 121 in the width direction, and it is avoided that the dimension in the width direction is too small to stably accommodate the tear string 13.
As shown in fig. 12, the present embodiment further discloses a manufacturing apparatus for manufacturing the optical cable 1, which comprises an embossing device 2, a longitudinal wrapping device 3 and an extrusion molding device 4, wherein the corrugated steel strip 12 is output from the embossing device 2, and then is conveyed to the longitudinal wrapping device 3 together with the cable core 11 (not shown in fig. 12) for longitudinal wrapping, and then is extruded by the extrusion molding device 4 to form the protective sheath 14. The longitudinal wrapping device 3 includes a longitudinal wrapping table 31 (not shown in fig. 12), a trumpet-shaped forming die 32 and a sizing die 33 provided on the longitudinal wrapping table 31. Alternatively, the extrusion device 4 is an extruder. The cable core 11 and the corrugated steel belt 12 are drawn to the large opening end of the forming die 32 to enter and come out from the small opening end, and the corrugated steel belt 12 is preliminarily coated outside the cable core 11; and then firmly forming the cable core by a sizing die 33 to realize longitudinal wrapping of the cable core 11. For the optical cable 1 with the tearing rope 13 clamped between the cable core 11 and the corrugated steel strip 12, the manufacturing equipment further comprises a paying-off device 5 and a taking-up device for laying the tearing rope 13. The take-up device is arranged at the front end of the longitudinal wrapping table 31, the pay-off device 5 is arranged between the embossing device 2 and the longitudinal wrapping table 31, and the take-up device is matched with the pay-off device 5 through tension force, so that the conveying speed of the tearing rope 13 is matched with the conveying speed of the corrugated steel strip 12; meanwhile, the tearing rope 13 on the longitudinal covering table 31 can be just arranged in the tearing groove 121 and longitudinally covered and molded on the longitudinal covering table 31 along with the corrugated steel strip 12 and the cable core 11.
Specifically, as shown in fig. 13, the pay-off device 5 includes a pay-off bracket 51, a pay-off reel 52 provided on the pay-off bracket 51, and a wire guide. Optionally, two pay-off reels 52 and two wire guide wheels are provided, each pay-off reel 52 corresponds to one wire guide wheel, and a wire passing groove 531 is formed on the outer circumferential surface of each wire guide wheel. Each pay-off reel 52 is wound with a tearing rope 13, and the tearing rope 13 is guided by the wire guide wheel and then output from a certain tangent direction of the wire passing groove 531, and is connected with a take-up device for paying off. In order to make the tearing rope 13 be able to be arranged in the tearing groove 11 of the corrugated steel strip 12 before the corrugated steel strip 12 enters the forming die 32, the tangential direction of the tearing rope 13 output by the threading groove 531 is overlapped with the central axis of the tearing groove 121 of the corrugated steel strip 12, thereby ensuring that the tearing rope 13 can be always arranged in the tearing groove 121 in the paying-off process. As shown in fig. 12, the dotted line represents the conveying direction of the corrugated steel strip 12, and the dotted line represents the conveying direction of the tear string 13, and it can be seen from the figure that the tear string 13 can be positioned in the tear groove 121 of the corrugated steel strip 12 just before entering the forming die 32 under the guidance of the wire guide roller.
Further, after the position of the wire passing guide wheel relative to the tearing groove 121 is adjusted at the beginning of the paying-off of the tearing rope 13, the tearing rope 13 is firstly bonded with the tearing groove 121 to ensure the matching of the tearing rope 13 and the tearing groove 121 at the beginning, and then the continuous paying-off is completed by the wire passing guide wheel. Further alternatively, since the pay-off bracket 51 and the longitudinal covering table 31 have a certain distance therebetween, in order to ensure that the tear rope 13 does not deviate in long-distance transportation, two wire guide rollers are additionally arranged on the longitudinal covering table 31, the wire guide roller arranged on the pay-off bracket 51 is referred to as a first wire guide roller 53, and the wire guide roller arranged on the longitudinal covering table 31 is referred to as a second wire guide roller 54. Each first threading guide wheel 53 corresponds to one second threading guide wheel 54, and the threading grooves 531 of the first threading guide wheel and the second threading guide wheel are arranged at the same level, so that the output direction of the tearing rope 13 is kept unchanged after the tearing rope is guided by the first threading guide wheel 53 and the second threading guide wheel 54 in sequence.
In order to facilitate monitoring of the longitudinal wrapping with the tear string 13 accurately received in the tear groove 121 of the corrugated steel strip 12, as shown in fig. 12, the manufacturing apparatus further includes a laser monitoring device 6, and the laser monitoring device 6 is provided at the rear end of the longitudinal wrapping table 31 and emits a laser beam parallel to the conveying direction of the corrugated steel strip 12. Further, since the laser beam can be always overlapped with the central axis of tear groove 121 during the conveyance of corrugated steel strip 12 to vertical covering table 31, the worker can observe from vertical covering table 31 whether tear cord 13 can be properly placed in tear groove 121. Specifically, when the tear string 13 is overlapped with the laser beam, it indicates that the tear string 13 is just located in the tear groove 121 and is longitudinally wrapped and molded together; when the tearing rope 13 is deviated from the laser beam, it indicates that the tearing rope 13 is not aligned with the tearing groove 121, and the tearing rope 13 cannot be accurately put into the tearing groove 121, at this time, it is necessary to adjust the position of the first wire guide wheel 53 on the wire releasing bracket 51 or the position of the second wire guide wheel 54 on the bale-handling platform 31 to change the output direction of the tearing rope 13, so that the tearing rope 13 coincides with the laser beam. Optionally, the wire guide wheel is disposed on the wire releasing bracket 51 and the longitudinal covering table 31 through a limit screw, and the position can be finely adjusted through the limit screw. Further, two laser monitoring devices 6 are provided for respectively monitoring the coincidence condition of the two tear ropes 13.
The optical cable 1 easy to strip and the manufacturing equipment thereof provided by the embodiment are mainly used for the optical cable 1 provided with the tearing rope 13, such as a layer stranded optical cable, but not limited to the layer stranded optical cable, and can be any optical cable armored by using the corrugated steel strip 12. In specific implementation, the corrugated steel strip 12 of the optical cable 1 can be directly wrapped around the cable core 11, and yarns can be bound between the cable core 11 and the corrugated steel strip 12 or other water-resistant layers can be arranged.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. An optical cable manufacturing device is used for manufacturing an optical cable (1), and is characterized in that the optical cable (1) comprises a cable core (11) and a corrugated steel strip (12) coated on the periphery of the cable core (11), and two tearing grooves (121) are formed in the side wall of the corrugated steel strip (12) close to the cable core (11); the two tearing grooves (121) are distributed on the corrugated steel strip (12) in a central symmetry way; a tearing rope (13) is arranged in each tearing groove (121);
the optical cable manufacturing apparatus includes an embossing device (2); the embossing device (2) comprises a convex roller (21) and a concave roller (22), and third protrusions (213) are arranged on the outer circumferential surface of the convex roller (21); the third bulge (213) is of an annular structure concentric with the convex roller (21);
a third groove (223) is formed in the outer circumferential surface of the concave roller (22), and the third groove (223) is of an annular structure concentric with the concave roller (22); the tearing groove (121) of the corrugated steel strip (12) is formed by the third protrusion (213) and the third groove (223) in a rolling and pressing mode.
2. Optical cable manufacturing apparatus according to claim 1, wherein the third protrusion (213) and the third groove (223) are provided in two.
3. Optical cable manufacturing apparatus according to claim 1, further comprising a pay-off device (5), wherein the pay-off device (5) comprises a pay-off bracket (51), a pay-off reel (52) provided on the pay-off bracket (51), and a first wire guide roller (53); the two pay-off reels (52) and the two first wire guide wheels (53) are arranged and correspond to each other one by one;
the tearing rope (13) is wound on the pay-off reel (52); a wire passing groove (531) is formed in the outer circumferential surface of the first wire passing guide wheel (53); the tearing rope (13) is guided by the first wire guide wheel (53) and then is output from the tangent direction of the wire passing groove (531);
the tangent direction of the tearing rope (13) output by the thread passing groove (531) of the first thread passing guide wheel (53) is overlapped with the central axis of the tearing groove (121) of the corrugated steel strip (12).
4. Optical cable manufacturing apparatus according to claim 3, characterized in that it further comprises longitudinal wrapping means (3) and take-up means; indulge package device (3) including indulging package platform (31), take-up is located indulge the front end of package platform (31), pay-off (5) are located embossing apparatus (2) with indulge between package platform (31).
5. Optical cable manufacturing equipment according to claim 4, wherein two second wire guide rollers (54) are arranged on the longitudinal covering table (31), and each first wire guide roller (53) corresponds to one second wire guide roller (54); the tearing rope (13) is guided by the first wire guide wheel (53) and the second wire guide wheel (54) in sequence, and the output direction is kept unchanged.
6. Optical cable manufacturing apparatus as claimed in claim 5, wherein the position of the first wire guide wheel (53) with respect to the pay-off bracket (51) is adjustable; the position of the second wire guide wheel (54) relative to the longitudinal covering table (31) is adjustable.
7. The optical cable manufacturing apparatus according to claim 4, further comprising a laser monitoring device (6), wherein the laser monitoring device (6) is provided at a rear end of the longitudinal wrapping table (31); the laser monitoring device (6) emits a laser beam which is coincident with the central axis of the tearing groove (121).
8. Optical cable manufacturing apparatus according to claim 1, wherein the tear groove (121) is provided extending along a length direction of the optical cable (1).
9. Optical cable manufacturing apparatus as claimed in claim 1, characterized in that the tear groove (121) has a cross-sectional shape of U-shape, V-shape or arc-shape.
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| JP6854373B1 (en) * | 2020-05-15 | 2021-04-07 | 株式会社フジクラ | Fiber optic cable |
| TWI853464B (en) * | 2022-03-02 | 2024-08-21 | 日商藤倉股份有限公司 | Optical cable, tear rope removal method and optical fiber lead method |
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