CN112309635A - Cable wrapping process for preventing cable medium from shrinking - Google Patents
Cable wrapping process for preventing cable medium from shrinking Download PDFInfo
- Publication number
- CN112309635A CN112309635A CN202011071276.0A CN202011071276A CN112309635A CN 112309635 A CN112309635 A CN 112309635A CN 202011071276 A CN202011071276 A CN 202011071276A CN 112309635 A CN112309635 A CN 112309635A
- Authority
- CN
- China
- Prior art keywords
- wrapping
- layer
- cable
- conductor
- polytetrafluoroethylene
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- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/10—Insulating conductors or cables by longitudinal lapping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2606—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by braiding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
- H01B13/262—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping of an outer metallic screen
Abstract
The invention discloses a cable wrapping process for preventing cable medium shrinkage, which is characterized by comprising the following steps: s1: manufacturing a conductor: placing a plurality of metal wires in a straightener and straightening the metal wires; s2: wrapping an insulating layer: wrapping a polytetrafluoroethylene wrapping tape outside the conductor processed in the step S1, wherein the wrapping layers of the polytetrafluoroethylene wrapping tape are even layers not less than 4 layers, the wrapping direction is a cross reverse wrapping direction, the wrapping layers of the polytetrafluoroethylene wrapping tape are set into a plurality of types, and the overlapping edges of the polytetrafluoroethylene wrapping tape are selected to be of a splicing seam structure; s3: wrapping a layer of silver-plated copper strip wrapping shielding on the outer surface of the conductor insulating layer processed by the S2; s4: wrapping a steel wire braid layer on the outer surface of the conductor shielding layer processed by S3; s5: wrapping a silver-plated braid layer on the outer surface of the conductor braid layer processed by S4; s6: and covering a sheath layer on the outer surface of the conductor braided layer treated by the S5.
Description
Technical Field
The invention relates to the technical field of cable manufacturing, in particular to a cable wrapping process for preventing cable medium shrinkage.
Background
The current mainstream production structure of the low-loss stable-amplitude phase-stable cable comprises a silver-plated copper central conductor, a polytetrafluoroethylene wrapped dielectric layer, a silver-plated copper strip wrapped inner layer shield, a silver-plated copper wire woven outer layer shield layer and an extruded sheath layer. The polytetrafluoroethylene lapping medium layer of this type cable mainly is by special equipment of lapping twine on silver-plated center conductor layer upon layer, and the number of piles and the mode of winding do not have unified standard, mostly are each designer's design by oneself. Because polytetrafluoroethylene has horizontal and longitudinal percentage elongation simultaneously around the band, when exerting tension winding behind central conductor and thickness and surpass 2mm through equipment, because the shrink nature and the stress release of around the band can lead to the medium of cable to have obvious shrink at the later stage, especially the medium shrink can reach 20~30cm after high low temperature strikes to directly lead to the performance index decline of cable and even cause the cable to scrap. Therefore, the market urgently needs a cable with reduced performance reduction caused by the shrinkage of the wrapping tape through the control of the production process on the basis of not changing the structure and the performance of the original stable-amplitude and stable-phase cable.
Disclosure of Invention
The cable wrapping process for preventing the contraction of the cable medium is provided aiming at the defects of the prior art, and the reduction of the cable performance reduction caused by the contraction of the wrapping tape is realized through the control of the production process on the basis of not changing the structure and the performance of the original stable-amplitude and stable-phase cable.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a cable wrapping process for preventing cable medium shrinkage is characterized by comprising the following steps:
s1: manufacturing a conductor: placing a plurality of metal wires in a straightener and straightening the metal wires;
s2: wrapping an insulating layer: wrapping a polytetrafluoroethylene wrapping tape outside the conductor processed in the step S1, wherein the wrapping layers of the polytetrafluoroethylene wrapping tape are even layers not less than 4 layers, the wrapping direction is a cross reverse wrapping direction, the wrapping layers of the polytetrafluoroethylene wrapping tape are set into a plurality of types, and the overlapping edges of the polytetrafluoroethylene wrapping tape are selected to be of a splicing seam structure;
s3: wrapping a layer of silver-plated copper strip wrapping shielding on the outer surface of the conductor insulating layer processed by the S2;
s4: wrapping a steel wire braid layer on the outer surface of the conductor shielding layer processed by S3;
s5: wrapping a silver-plated braid layer on the outer surface of the conductor braid layer processed by S4;
s6: and covering a sheath layer on the outer surface of the conductor braided layer treated by the S5.
Preferably, the wrapping direction in S2 is a cross direction, and the wrapping angle is 45 °.
Preferably, in S2, the overlapping edge of the teflon tape is selected to be a lap ratio of a patchwork structure or a 1/2 structure.
Preferably, the plurality of metal wires in the S1 are silver-plated copper conductors with the diameter of 1.4 mm.
As a preferable scheme, the sheath layer in S6 is made of TPE.
As a preferable scheme, the number of the wrapping layers of the polytetrafluoroethylene wrapping tape in S2 is an even number not less than 4, and the wrapping direction is changed for every one wrapping layer.
As a preferable scheme, the wrapping direction in S2 is a cross direction, and the width and thickness of each wrapping layer are different.
Compared with the prior art, the invention has the beneficial effects that: on the basis of not changing original stable-amplitude and stable-phase cable structure and performance, the cable performance reduction caused by the shrinkage of the winding tape is reduced through the control of the production process, the shrinkage ratio of the cable medium is reduced by utilizing the characteristics of materials and structures through the type design of each layer of winding tape, the service life of the cable is prolonged, the manufacturing method is simple, the cost is low, the production efficiency is high, and the quantitative production is convenient.
Drawings
FIG. 1 is a structural view of a wrapping package according to an embodiment.
Detailed Description
The invention is further described with reference to specific examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example (b):
as shown in fig. 1, a cable wrapping process for preventing cable medium shrinkage is characterized in that the wrapping process comprises the following steps:
s1: manufacturing a conductor: placing a plurality of metal wires in a straightener and straightening the metal wires;
s2: wrapping an insulating layer: wrapping a polytetrafluoroethylene wrapping tape outside the conductor processed in the step S1, wherein the wrapping layers of the polytetrafluoroethylene wrapping tape are even layers not less than 4 layers, the wrapping direction is a cross reverse wrapping direction, the wrapping layers of the polytetrafluoroethylene wrapping tape are set into a plurality of types, and the overlapping edges of the polytetrafluoroethylene wrapping tape are selected to be of a splicing seam structure;
s3: wrapping a layer of silver-plated copper strip wrapping shielding on the outer surface of the conductor insulating layer processed by the S2;
s4: wrapping a steel wire braid layer on the outer surface of the conductor shielding layer processed by S3;
s5: wrapping a silver-plated braid layer on the outer surface of the conductor braid layer processed by S4;
s6: and covering a sheath layer on the outer surface of the conductor braided layer treated by the S5.
In the preferred S2 of the present invention, the wrapping direction is the opposite direction, and the wrapping angle is 45 °.
In the invention, the overlap of the polytetrafluoroethylene taped tape in the S2 is preferably selected to be the lap ratio of a splicing seam structure or a 1/2 structure.
In the invention, a plurality of metal wires in S1 are preferably silver-plated copper conductors with the diameter of 1.4 mm.
In the invention, the sheath layer in the S6 is preferably made of TPE.
In the invention, the number of the wrapping layers of the polytetrafluoroethylene wrapping tape in the S2 is preferably an even number not less than 4, and the wrapping direction is changed every one wrapping layer.
In the invention, the wrapping direction in the preferred S2 is the opposite direction, and the width and the thickness of each wrapping layer are different.
The working principle is as follows: this patent is a resistant crooked radio frequency cable, and its major structure includes: a silver-plated copper conductor; a low density polytetrafluoroethylene dielectric; silver-plated copper strip lapping and shielding; a steel wire braid layer; silver plating braid; a sheath layer. When the dielectric layer of the cable is wrapped:
1. the number of layers of the wrapping tape is designed to be an even number of layers and is more than or equal to 4, such as 4 layers, 6 layers or 8 layers;
2. during the wrapping, the direction of the wrapping head is crossed and the wrapping is carried out in the opposite direction, if the first layer is clockwise, the second layer is anticlockwise, the third layer is clockwise, the fourth layer is anticlockwise, and the like.
3. The model with different width and wide band is selected when the polytetrafluoroethylene tape is wound, thereby avoiding the mixed use of the materials with the same model
4. The overlap edge of the polytetrafluoroethylene wrapping tape is selected to be the overlapping rate of a splicing structure or an 1/2 structure, so that the shrinkage probability of the wrapping tape is reduced, and meanwhile, the wrapping angle of the wrapping tape is about 45 degrees; the later contraction of the cable is prevented by the mutual pulling force in the transverse direction and the longitudinal direction.
5. And the cable medium layer 1 is continuously wrapped for the second time 3 by a wrapping tape 4 on the basis of the primary wrapping 2.
Example (c):
if the central conductor of the cable is 1.4mm, and the outer diameter of the dielectric layer of the 50 omega coaxial cable is 3.8mm, the selection and the structural design of the wrapping tape can be designed according to the following modes when the dielectric layer is designed:
| width of | Thickness of | Density of | Diameter before wrapping | Overlap edge | Wrapping angle | Diameter after wrapping | Pitch of | Wrapping direction |
| 6.400 | 0.100 | 0.700 | 1.400 | 0.500 | 50.460 | 1.800 | 4.149 | Clockwise |
| 8.000 | 0.150 | 0.700 | 1.800 | 0.500 | 52.677 | 2.400 | 5.030 | Counter clockwise |
| 11.000 | 0.150 | 0.700 | 2.400 | 0.500 | 49.578 | 3.000 | 7.225 | Clockwise |
| 13.000 | 0.200 | 0.700 | 3.000 | 0.500 | 52.516 | 3.800 | 8.191 | Counter clockwise |
The 1.1.4 mm central conductor passes through 1 alignment it, straightens the conductor as far as possible, is the straight line state, guarantees the stability of dielectric layer in the winding process.
2. The first layer is made of polytetrafluoroethylene wrapping tape with the width of 6.4mm, the thickness of 0.10mm and the density of 0.7 g/cubic centimeter, the covering rate is 1/2 (0.5), the wrapping angle is 50.5 degrees, and clockwise wrapping is carried out in the wrapping direction.
3. The second layer is made of a polytetrafluoroethylene wrapping tape with the width of 8mm, the thickness of 0.15mm and the density of 0.7 g/cubic centimeter, the covering rate is 1/2 (0.5), and the wrapping angle is 52.7 degrees; the wrapping direction is anticlockwise.
4. The third layer is made of polytetrafluoroethylene wrapping tape with the width of 11mm, the thickness of 0.15mm and the density of 0.7 g/cubic centimeter, the covering rate is 1/2 (0.5), and the wrapping angle is 49.6 degrees; the wrapping direction is clockwise.
5. The fourth layer is made of a polytetrafluoroethylene wrapping tape with the width of 13mm, the thickness of 0.20mm and the density of 0.7 g/cubic centimeter, the covering rate is 1/2 (0.5), and the wrapping angle is 52.5 degrees; the wrapping direction is anticlockwise.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a prevent cable of cable medium shrink around package technology which characterized in that includes following step around the package technology:
s1: manufacturing a conductor: placing a plurality of metal wires in a straightener and straightening the metal wires;
s2: wrapping an insulating layer: wrapping a polytetrafluoroethylene wrapping tape outside the conductor processed in the step S1, wherein the wrapping layers of the polytetrafluoroethylene wrapping tape are even layers not less than 4 layers, the wrapping direction is a cross reverse wrapping direction, the wrapping layers of the polytetrafluoroethylene wrapping tape are set into a plurality of types, and the overlapping edges of the polytetrafluoroethylene wrapping tape are selected to be of a splicing seam structure;
s3: wrapping a layer of silver-plated copper strip wrapping shielding on the outer surface of the conductor insulating layer processed by the S2;
s4: wrapping a steel wire braid layer on the outer surface of the conductor shielding layer processed by S3;
s5: wrapping a silver-plated braid layer on the outer surface of the conductor braid layer processed by S4;
s6: and covering a sheath layer on the outer surface of the conductor braided layer treated by the S5.
2. The cable wrapping process for preventing the contraction of the cable medium according to claim 1, wherein: and the wrapping direction in the S2 is the opposite crossing wrapping direction, and the wrapping angle is 45 degrees.
3. The cable wrapping process for preventing the contraction of the cable medium according to claim 1, wherein: and in the S2, the overlapping edge of the polytetrafluoroethylene taped tape is selected to be the overlapping rate of a splicing structure or a 1/2 structure.
4. The cable wrapping process for preventing the contraction of the cable medium according to claim 1, wherein: and a plurality of metal wires in the S1 are silver-plated copper conductors with the diameter of 1.4 mm.
5. The cable wrapping process for preventing the contraction of the cable medium according to claim 1, wherein: and the sheath layer in the S6 is made of TPE.
6. The cable wrapping process for preventing the contraction of the cable medium according to claim 1, wherein: the number of the wrapping layers of the polytetrafluoroethylene wrapping tape in the S2 is an even number of layers not less than 4, and the wrapping direction is changed every one wrapping layer.
7. The cable wrapping process for preventing the contraction of the cable medium according to claim 1, wherein: and in the S2, the wrapping direction is a cross and reverse wrapping direction, and the width and the thickness of each wrapping layer are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071276.0A CN112309635A (en) | 2020-10-09 | 2020-10-09 | Cable wrapping process for preventing cable medium from shrinking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071276.0A CN112309635A (en) | 2020-10-09 | 2020-10-09 | Cable wrapping process for preventing cable medium from shrinking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112309635A true CN112309635A (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011071276.0A Pending CN112309635A (en) | 2020-10-09 | 2020-10-09 | Cable wrapping process for preventing cable medium from shrinking |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2469775A1 (en) * | 2003-06-05 | 2004-12-05 | Hew-Kabel/Cdt Gmbh & Co. Kg | Electric heating cable or tape having insulating sheaths that are arranged in a layered structure |
| CN101980401A (en) * | 2010-12-01 | 2011-02-23 | 天津安讯达科技有限公司 | Low-loss stationary-phase coaxial radio-frequency cable and manufacturing process thereof |
| CN103219576A (en) * | 2013-05-07 | 2013-07-24 | 四川爱通电子线缆制造有限责任公司 | Production process of radio frequency coaxial cable |
| CN109192387A (en) * | 2018-09-18 | 2019-01-11 | 湖南华菱线缆股份有限公司 | A kind of aircraft instrumentation control radar coaxial cable and the preparation method for inhaling wave inner sheath |
| CN111145947A (en) * | 2020-01-14 | 2020-05-12 | 西安飞机工业（集团）亨通航空电子有限公司 | Aviation airborne coaxial cable and preparation method thereof |
-
2020
- 2020-10-09 CN CN202011071276.0A patent/CN112309635A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2469775A1 (en) * | 2003-06-05 | 2004-12-05 | Hew-Kabel/Cdt Gmbh & Co. Kg | Electric heating cable or tape having insulating sheaths that are arranged in a layered structure |
| CN101980401A (en) * | 2010-12-01 | 2011-02-23 | 天津安讯达科技有限公司 | Low-loss stationary-phase coaxial radio-frequency cable and manufacturing process thereof |
| CN103219576A (en) * | 2013-05-07 | 2013-07-24 | 四川爱通电子线缆制造有限责任公司 | Production process of radio frequency coaxial cable |
| CN109192387A (en) * | 2018-09-18 | 2019-01-11 | 湖南华菱线缆股份有限公司 | A kind of aircraft instrumentation control radar coaxial cable and the preparation method for inhaling wave inner sheath |
| CN111145947A (en) * | 2020-01-14 | 2020-05-12 | 西安飞机工业（集团）亨通航空电子有限公司 | Aviation airborne coaxial cable and preparation method thereof |
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Application publication date: 20210202 |
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