CN114325973A - Clamping groove type optical cable sheath and manufacturing method thereof - Google Patents
Clamping groove type optical cable sheath and manufacturing method thereof Download PDFInfo
- Publication number
- CN114325973A CN114325973A CN202111413911.3A CN202111413911A CN114325973A CN 114325973 A CN114325973 A CN 114325973A CN 202111413911 A CN202111413911 A CN 202111413911A CN 114325973 A CN114325973 A CN 114325973A
- Authority
- CN
- China
- Prior art keywords
- protective cover
- cable
- optical cable
- pinch roller
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a clamping groove type optical cable sheath and a manufacturing method thereof, and belongs to the technical field of optical cable manufacturing. The cable comprises a first protective cover and a second protective cover, wherein the first protective cover and the second protective cover enclose a cable core and are arranged in a closed mode; the cable comprises a first protection cover, a second protection cover and a cable core, and is characterized in that a first clamping block is arranged on the first protection cover, a second clamping groove is arranged on the second protection cover, the first clamping block is matched with the second clamping groove, and the first clamping block is clamped in the first open groove, so that the first protection cover and the second protection cover are fixed on the outer surface of the cable core. And reinforcing elements are respectively arranged in the first protective cover and the second protective cover. The reinforcing element is a flexible reinforcing yarn member. The inclination angle of first draw-in groove is 30 ~ 40. This application can swiftly realize that the sheath shells and resumes in the optical cable in-service use process.
Description
Technical Field
The invention relates to a clamping groove type optical cable sheath and a manufacturing method thereof, and belongs to the technical field of optical cable manufacturing.
Background
The cable sheath is usually made of a plastic material such as Medium Density Polyethylene (MDPE) or High Density Polyethylene (HDPE) and is continuously extruded on the surface of the cable core by an extruder. In order to obtain certain mechanical strength, compression resistance, tensile resistance, torsion resistance and other capabilities, a moisture-proof layer of a steel-aluminum belt or a reinforcing material layer of steel wires, aramid yarns and the like are required to be added in the sheath. As the sheath layer is made by continuous extrusion molding, the problem of inconvenient stripping inevitably exists on the basis of ensuring the sealing performance, and the sheath after stripping can not be used repeatedly. Meanwhile, due to the influence of uncontrollable factors such as materials and equipment in the continuous extrusion molding process, the problems of accidental bulging, hole breaking, wire diameter fluctuation and the like can occur, so that the whole cable needs to be peeled and reworked, and certain quality loss is caused.
Disclosure of Invention
The invention aims to solve the technical problem that a clamping groove type optical cable sheath and a manufacturing method thereof are provided aiming at the prior art, the split type sheath is adopted, the split type sheath is combined into a whole through the clamping groove design, the disassembly and the assembly are convenient, and the problems that the sheath is inconvenient to peel and cannot be repeatedly used after peeling are avoided.
The technical scheme adopted by the invention for solving the problems is as follows: a clamping groove type optical cable sheath comprises a first protective cover and a second protective cover, wherein a cable core is surrounded by the first protective cover and the second protective cover, and the first protective cover and the second protective cover are arranged in a closing mode; the cable comprises a first protection cover, a second protection cover and a cable core, and is characterized in that a first clamping block is arranged on the first protection cover, a second clamping groove is arranged on the second protection cover, the first clamping block is matched with the second clamping groove, and the first clamping block is clamped in the first open groove, so that the first protection cover and the second protection cover are fixed on the outer surface of the cable core.
And reinforcing elements are respectively arranged in the first protective cover and the second protective cover.
The reinforcing element is a flexible reinforcing yarn member.
The inclination angle of first draw-in groove is 30 ~ 40.
A manufacturing method of a clamping groove type optical cable sheath comprises the following steps:
the method comprises the following steps: the first protective cover and the second protective cover are respectively extruded by a plastic extruding machine; the first protective cover is wound on the first protective cover winding disc, and the second protective cover is wound on the second protective cover winding disc;
step two: the cable core pay-off rack releases the cable core, and the first protective cover and the second protective cover release simultaneously;
step three: the cable core, the first protective cover and the second protective cover are synchronously pulled to the rotary pinch roller device, and the rotary pinch roller device applies pressure to the first protective cover and the second protective cover, so that the first protective cover, the second protective cover and the cable core are combined into a whole to form an integral optical cable;
step four: and winding the optical cable on a take-up stand.
In the first step, the temperature of the extruder head is 160-175 ℃, and the traction speed during extrusion is 10-20 m/min.
In the first step, the reinforcing element is placed and then extruded in the first protective cover and the second protective cover.
The third step rotary pressing wheel device comprises a pressing wheel fixing seat, bearings with seats are symmetrically arranged on the pressing wheel fixing seat, two pressing wheel shafts which are vertically arranged are arranged between the two bearings with seats, and the two pressing wheel shafts are horizontally arranged at intervals; the top end of the pinch roller shaft is provided with a pinch roller; a horizontally arranged screw rod penetrates through the two bearings with the bases, the screw rod penetrates through the two pinch roller shafts, threads with opposite rotation directions at two ends are arranged on the screw rod, and the screw rod is in threaded connection with the two pinch roller shafts; a pinch roller is arranged on the pinch roller shaft; the end part of the screw rod is provided with a hand wheel, the hand wheel is stirred to drive the screw rod to rotate, and then the two pinch roller shafts are driven to be close to each other or to be away from each other, so that the two pinch rollers are close to each other and exert pressure on the first protective cover and the second protective cover or the two pinch rollers are away from each other to form a conveying channel.
Compared with the prior art, the invention has the advantages that: a first protective cover and a second protective cover of a physical buckle type are designed by utilizing a wedge-shaped meshing principle, the first protective cover and the second protective cover are respectively produced, the first protective cover, the second protective cover and a cable core or an optical unit are combined into an integral optical cable by adopting a cold operation combining mode, and unexpected quality loss in the continuous extrusion molding production process of a conventional protective cover is reduced. This application can swiftly realize that the sheath is opened and is shelled and resume in the optical cable in-service use process, can repeatedly use after opening to shell the back and compressing tightly through rotatory pinch roller device.
Drawings
FIG. 1 is a schematic view of a standard circular-groove-type optical cable sheath for a circular cable core according to an embodiment of the present invention;
FIG. 2 is a schematic view of a flat card slot cable jacket for a flat cable core;
FIG. 3 is a schematic view of a plurality of oval slotted optical cable sheaths for parallel arranged round cable cores;
FIG. 4 is a schematic view of a plurality of square card slot type optical cable sheaths for flat cable cores;
FIG. 5 is a schematic view of a production line for a clamp-in optical cable jacket;
FIG. 6 is a schematic view of the rotary platen assembly of FIG. 5;
FIG. 7 is a top view of FIG. 6;
in the figure, 1 a first protective cover, 1.1 a first clamping block, 2 cable cores, 3 a second protective cover, 3.1 a second clamping groove, 4 reinforcing elements, 5 extending pieces, 6 cable core pay-off frames, 7 tension wheels, 8 plastic extruding machines, 9 cooling water tanks, 10 traction tracks, 11 take-up frames, 12 first protective cover pay-off frames, 13 second protective cover pay-off frames, 14 rotary pinch roller devices, 14.1 pinch roller fixing seats, 14.2 hand wheels, 14.3 screw rods, 14.4 pinch roller shafts and 14.5 pinch rollers are arranged on the first protective cover.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The clamping groove type optical cable sheath in the embodiment comprises a first protective cover 1 made of halogen-free flame-retardant polyolefin ZRPO material and a second protective cover 3 made of halogen-free flame-retardant polyolefin ZRPO material, wherein a cable core 2 is enclosed by the first protective cover 1 and the second protective cover 3, and the first protective cover and the second protective cover are arranged in a matching mode. Be equipped with first fixture block 1.1 on the first safety cover 1, be equipped with second draw-in groove 3.1 on the second safety cover 3, second draw-in groove 3.1 cooperatees with first fixture block 1.1, and first fixture block 1.1 card is in second draw-in groove 3.1 for first safety cover 1 and 3 block fixed connection of second safety cover, cable core 2 closes as an organic wholely with first safety cover 1, second safety cover 3 promptly, forms the optical cable wholly.
In order to ensure the necessary bending properties of the protective sleeve, a reinforcing element 4 is provided in each of the first protective cover 1 and the second protective cover 3. The reinforcing elements 4 are made of flexible reinforcing yarns (aramid yarns, glass yarns, carbon fiber yarns, etc.), and steel wires or FRP materials with high hardness are not selected as much as possible, and if steel wires or FRP materials with high hardness are required to be used, the reinforcing elements 4 need to be arranged in a row in parallel and uniformly.
The inclination angle of the second clamping groove 3.1 is 30-40 degrees. If the inclination angle of the second clamping groove 3.1 is too large, a large external force is required to be applied to realize the combination and the separation of the first protective cover 1 and the second protective cover 3; if the angle of inclination of the second clamping groove 3.1 is too small, unintended separation of the sheath will occur in the using process.
As shown in fig. 1, the cable core 2 is a single round cable core, the first protective cover 1 and the second protective cover 3 are semicircular structural members, and the first protective cover 1 and the second protective cover 3 are arranged in an up-down involutory manner. Reinforcing elements 4 are arranged circumferentially at even intervals within the first and second protective covers 1, 3.
As shown in fig. 2, the cable core 2 is a single flat cable core, the first protective cover 1 and the second protective cover 3 are flat structural members, the first protective cover 1 and the second protective cover 3 are arranged in a vertically-closed manner, and the reinforcing elements 4 are arranged in the first protective cover 1 and the second protective cover 3 at intervals in parallel.
As shown in fig. 3, the cable core 2 is a plurality of horizontally arranged circular cable cores, and the first protective cover 1 and the second protective cover 3 are arranged in a left-right involutory manner to form an oval structural member. The reinforcing element is arranged at the bent arc.
Fig. 1-3 are suitable for applications requiring a smooth surface, and the jacket has a shape consistent with that of a conventional round or oval optical cable, thereby facilitating the dragging construction in a pipeline.
As shown in fig. 4, the cable core 2 is a plurality of flat cable cores, and the first protective cover 1 and the second protective cover 3 are arranged in a vertically-closed manner to form a square structural member. The reinforcing elements 4 are arranged in parallel spaced apart relationship within the first and second protective covers 1, 3. The first fixture block 1.1 of the first protective cover 1 extends outwards to form an extension piece 5, and a gap is reserved between the inner wall of the extension piece 5 and the outer wall of the second protective cover 3, so that a stripping tool can be conveniently inserted.
As shown in fig. 5, a method for manufacturing a slot-type optical cable sheath includes the following steps:
the method comprises the following steps: a plastic material (namely halogen-free flame retardant polyolefin ZRPO) with the shrinkage rate of less than 1% is placed in an extruding machine 8, the head of the extruding machine is heated to 160-175 degrees, and constant-speed production is carried out at the production speed of 10-20 m/min, so that the dimensional accuracy of the first protective cover 1 and the second protective cover 3 is ensured to be consistent, and the first protective cover and the second protective cover with accurate appearance dimensions are obtained. In the process of extruding the first protective cover and the second protective cover, appropriate reinforcing elements 4 can be added and extruded together according to actual performance requirements. The finished first protective cover is cooled by the cooling water tank 9 and then wound on the first protective cover winding disc, and the second protective cover is cooled by the cooling water tank 9 and then wound on the second protective cover winding disc.
Step two: the tension of the cable core released by the cable core pay-off rack 6 is adjusted by the tension pulley 7, and the first protective cover winding disc and the second protective cover winding disc release the first protective cover and the second protective cover simultaneously through the first protective cover pay-off rack 12 and the second protective cover pay-off rack 13; the three are synchronously pulled by the traction caterpillar 10.
Step three: the cable core, the first protective cover and the second protective cover are synchronously pulled to the rotary pinch roller device 14, and the rotary pinch roller device 14 applies pressure to the first protective cover and the second protective cover, so that the first protective cover and the second protective cover are fixed on the periphery of the cable core in an involutory mode, namely the cable core or a plurality of optical units are protected in the first protective cover and the second protective cover, and the whole optical cable is formed. As shown in FIG. 4, when the first protector has a wall thickness of 2mm and a width of 15mm, a pressing force of 20 to 30N is generally suitable.
Step four: and winding the optical cable on a take-up stand.
As shown in fig. 6 and 7, the rotary pinch roller device 14 includes a pinch roller fixing seat 14.1, the pinch roller fixing seat 14.1 is symmetrically provided with bearings with seats, two pinch roller shafts 14.4 arranged at intervals are arranged between the two bearings with seats, the pinch roller shafts 14.4 are vertically arranged, and the top end of the pinch roller shaft 14.4 is provided with a pinch roller 14.5. The two bearings with the seats are internally provided with a screw 14.3 which is horizontally arranged, the screw 14.3 penetrates through the two pressure wheel shafts 14.4, the screw 14.3 is provided with threads with opposite rotation directions at two ends, and the screw is in threaded connection with the pressure wheel shafts. The end part of the screw rod is provided with a hand wheel 14.2, the hand wheel 14.2 is pulled to drive the screw rod 14.3 to rotate, and then the two pinch roller shafts 14.4 are driven to mutually approach or mutually separate, so that the two pinch rollers 14.5 mutually approach to apply pressure to the first protective cover and the second protective cover or mutually separate to form a conveying channel.
This application utilizes wedge-shaped meshing principle, has designed first safety cover and the second safety cover of physics buckle type, produces first safety cover and second safety cover respectively to adopt the merging mode of cold operation to merge into whole optical cable with first safety cover, second safety cover and cable core or optical unit, reduced unexpected quality loss in the continuous extrusion molding production process of conventional sheath. Simple tools such as a screwdriver, a clamp spring clamp and the like are inserted into the edge gaps of the first protective sleeve and the second protective sleeve, and the first protective sleeve and the second protective sleeve can be conveniently opened by slightly applying external force which opens outwards, so that the rapid stripping is realized. The pressing force is applied to the first protective cover and the second protective cover through the rotary pressing wheel device, and the first protective cover and the second protective cover can be rapidly fixed on the periphery of the cable core. This application realizes that the sheath is peeled off and is resumeed convenient and fast in the optical cable in-service use process.
In order to ensure that the first protective cover and the second protective cover realize good meshing effect, an extrusion molding material with small shrinkage deformation is selected, low-smoke halogen-free flame-retardant polyolefin (the main component is EVA ethylene-vinyl acetate copolymer, the typical shrinkage value of which is 0.5%) is selected, and other materials with similar or better performance can also be selected.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (8)
1. A draw-in groove formula optical cable sheath which characterized in that: the cable comprises a first protective cover and a second protective cover, wherein the first protective cover and the second protective cover enclose a cable core and are arranged in a closed mode; the cable comprises a first protection cover, a second protection cover and a cable core, and is characterized in that a first clamping block is arranged on the first protection cover, a second clamping groove is arranged on the second protection cover, the first clamping block is matched with the second clamping groove, and the first clamping block is clamped in the first open groove, so that the first protection cover and the second protection cover are fixed on the outer surface of the cable core.
2. The optical cable jacket of claim 1, wherein: and reinforcing elements are respectively arranged in the first protective cover and the second protective cover.
3. The optical cable jacket of claim 2, wherein: the reinforcing element is a flexible reinforcing yarn member.
4. The optical cable jacket of claim 1, wherein: the inclination angle of first draw-in groove is 30 ~ 40.
5. The method for manufacturing the slot-type optical cable sheath according to any one of claims 1 to 4, wherein: the manufacturing method comprises the following steps:
the method comprises the following steps: the first protective cover and the second protective cover are respectively extruded by a plastic extruding machine; the first protective cover is wound on the first protective cover winding disc, and the second protective cover is wound on the second protective cover winding disc;
step two: the cable core pay-off rack releases the cable core, and the first protective cover and the second protective cover release simultaneously;
step three: the cable core, the first protective cover and the second protective cover are synchronously pulled to the rotary pinch roller device, and the rotary pinch roller device applies pressure to the first protective cover and the second protective cover, so that the first protective cover, the second protective cover and the cable core are combined into a whole to form an integral optical cable;
step four: and winding the optical cable on a take-up stand.
6. The method of making a card-slot cable jacket of claim 5, wherein: in the first step, the temperature of the extruder head is 160-175 ℃, and the traction speed during extrusion is 10-20 m/min.
7. The method of making a card-slot cable jacket of claim 5, wherein: in the first step, the reinforcing element is placed and then extruded in the first protective cover and the second protective cover.
8. The method of making a jacket for a card-slot optical cable of claim 5, wherein: the third step rotary pressing wheel device comprises a pressing wheel fixing seat, bearings with seats are symmetrically arranged on the pressing wheel fixing seat, two pressing wheel shafts which are vertically arranged are arranged between the two bearings with seats, and the two pressing wheel shafts are horizontally arranged at intervals; the top end of the pinch roller shaft is provided with a pinch roller; a horizontally arranged screw rod penetrates through the two bearings with the bases, the screw rod penetrates through the two pinch roller shafts, threads with opposite rotation directions at two ends are arranged on the screw rod, and the screw rod is in threaded connection with the two pinch roller shafts; a pinch roller is arranged on the pinch roller shaft; the end part of the screw rod is provided with a hand wheel, the hand wheel is stirred to drive the screw rod to rotate, and then the two pinch roller shafts are driven to be close to each other or to be away from each other, so that the two pinch rollers are close to each other and exert pressure on the first protective cover and the second protective cover or the two pinch rollers are away from each other to form a conveying channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111413911.3A CN114325973A (en) | 2021-11-25 | 2021-11-25 | Clamping groove type optical cable sheath and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111413911.3A CN114325973A (en) | 2021-11-25 | 2021-11-25 | Clamping groove type optical cable sheath and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114325973A true CN114325973A (en) | 2022-04-12 |
Family
ID=81047050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111413911.3A Pending CN114325973A (en) | 2021-11-25 | 2021-11-25 | Clamping groove type optical cable sheath and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114325973A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115755311A (en) * | 2023-01-10 | 2023-03-07 | 江苏亨通光电股份有限公司 | Composite layer stranded optical cable |
-
2021
- 2021-11-25 CN CN202111413911.3A patent/CN114325973A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115755311A (en) * | 2023-01-10 | 2023-03-07 | 江苏亨通光电股份有限公司 | Composite layer stranded optical cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4156624A (en) | Manufacture of optical fibre cables with simultaneous laying | |
| JPH0713056A (en) | Reinforced plastic armored cable and its production | |
| CN104730667A (en) | Skeleton type optical cable and manufacturing method thereof | |
| US8374473B2 (en) | Tight-buffered optical fiber having improved fiber access | |
| CN114325973A (en) | Clamping groove type optical cable sheath and manufacturing method thereof | |
| CN102568680A (en) | Wind energy cable and production method thereof | |
| EP3454102B1 (en) | Fiberoptic loose tube manufacturing and post extrusion shrinkage mitigation | |
| CN111562657A (en) | Armored micro-beam optical cable and manufacturing method thereof | |
| CN113433634A (en) | Remote optical cable and preparation method thereof | |
| CN212475622U (en) | Cable forming machine with straightening function | |
| JPH02289805A (en) | Optical fiber unit | |
| JP2004029815A (en) | Buffered optical fiber and method of manufacturing the same | |
| CN112034571A (en) | Anti-shrinkage multi-unit parallel beam tube optical cable and manufacturing method thereof | |
| WO2016127562A1 (en) | Optical fibre, and manufacturing system and manufacturing method therefor | |
| WO2011144815A1 (en) | Method and arrangement in connection with a fibre coating line | |
| US6870994B2 (en) | Optical fiber cord, manufacturing method thereof, and manufacturing apparatus thereof | |
| CN114296193B (en) | Method and device for enhancing cladding force of aramid yarn armor layer of cable | |
| CN112630912A (en) | Layer-stranded air-blowing micro cable and production equipment and processing method thereof | |
| CN114690354A (en) | Special spring flexible optical cable and manufacturing method thereof | |
| JP4927700B2 (en) | Optical fiber cable and method for manufacturing the optical fiber cable | |
| JP3582397B2 (en) | Method of winding linear body and apparatus for manufacturing linear body | |
| KR101199283B1 (en) | Method and device for manufacturing spiral spacer | |
| CN212694131U (en) | Anti-shrinkage multi-unit parallel beam tube optical cable | |
| CN114474668B (en) | Three-layer co-extrusion machine head, production process thereof and cable produced by adopting process | |
| CN110634628B (en) | Manufacturing method and equipment of environment-friendly natural cross-linked polyolefin insulated high-temperature-resistant wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |