CN212010390U - Flexible anti-broken double-layer shielding coaxial cable - Google Patents
Flexible anti-broken double-layer shielding coaxial cable Download PDFInfo
- Publication number
- CN212010390U CN212010390U CN202020825826.2U CN202020825826U CN212010390U CN 212010390 U CN212010390 U CN 212010390U CN 202020825826 U CN202020825826 U CN 202020825826U CN 212010390 U CN212010390 U CN 212010390U
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- Prior art keywords
- layer
- copper
- tinned copper
- coaxial cable
- shielding
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910052802 copper Inorganic materials 0.000 claims abstract description 39
- 239000010949 copper Substances 0.000 claims abstract description 39
- 239000002131 composite material Substances 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000004020 conductor Substances 0.000 claims abstract description 16
- 239000011889 copper foil Substances 0.000 claims abstract description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 6
- 239000008397 galvanized steel Substances 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims description 20
- 239000004743 Polypropylene Substances 0.000 claims description 17
- -1 polypropylene Polymers 0.000 claims description 17
- 229920001155 polypropylene Polymers 0.000 claims description 17
- 238000005187 foaming Methods 0.000 claims description 7
- 238000009954 braiding Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 241001391944 Commicarpus scandens Species 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- Communication Cables (AREA)
Abstract
The utility model discloses a flexible double-deck shielding coaxial cable of preventing broken string, including the inner conductor, the outside cladding in proper order of inner conductor has the insulating layer, copper is moulded composite band around package shielding layer, shielding net and PVC oversheath are woven to the metal, arrange a plurality of tinned copper wires and twist jointly and sticis the formation inner conductor for central periphery based on a galvanized steel wire, copper is moulded composite band and is taken the lid around the package structure for copper is moulded composite band around the package shielding layer, copper is moulded composite band and is included outer and the PTFE resin inlayer of copper foil tape, metal is woven shielding net and is each other for reverse spiral winding to weave the constitution for inlayer tinned copper monofilament and outer tinned copper monofilament, inlayer tinned copper monofilament diameter is less than outer tinned copper monofilament diameter, inlayer tinned copper monofilament diameter is 0.08mm to 0.12mm, outer tinned copper monofilament diameter is 0.1mm to 0.15 mm. The cable has excellent flexibility and shielding electrical characteristics, is not easy to break, and has better long-distance transmission electrical characteristics.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a flexible double-deck shielding coaxial cable of preventing broken string.
Background
Electromagnetic noise environments tend to be quite complex in industrial applications, and the radiation or conduction (EMI) of electromagnetic noise can significantly interfere with the proper operation of electromechanical devices. In this process, an important carrier for electromagnetic noise propagation is various cables used in production line equipment. Some of them are noise sources and some are disturbed objects. One very important way to combat electromagnetic noise interference on electrical lines is to use shielded cables. Coaxial cables are one of the main varieties of wire cables. In an automated industrial production line, electrical connection between a robot and an electrical control device and the like is required to be applied to a coaxial cable having a good flexibility and a good shielding property. However, the industrial application site environment is complicated, and in the actual laying process, after a general coaxial cable is bent or twisted, the phenomenon of wire breakage of a wire core or a shielding layer is easy to occur, the shielding effect is unstable, the electrical characteristics of long-distance transmission are poor, and the durability is affected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a flexible double-deck shielding coaxial cable of preventing broken string, has excellent pliability and shielding electrical characteristic concurrently, is difficult for appearing the broken string, and the electrical characteristic of long distance conveying is better, durable use.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
The flexible anti-broken double-layer shielding coaxial cable comprises an inner conductor, wherein an insulating layer, a copper-plastic composite tape wrapping shielding layer, a metal woven shielding net and a PVC outer sheath are sequentially wrapped outside the inner conductor, a plurality of tinned copper wires are arranged around the center of the copper-plastic composite tape and are jointly twisted and compressed to form the inner conductor, the copper-plastic composite tape wrapping shielding layer is of a copper-plastic composite tape lapping and wrapping structure, the copper-plastic composite tape comprises a copper foil tape outer layer and a PTFE resin inner layer, the metal woven shielding net is formed by spirally winding and weaving inner layer tinned copper monofilaments and outer layer tinned copper monofilaments in a reverse direction, the diameter of the inner layer tinned copper monofilaments is smaller than that of the outer layer tinned copper monofilaments, the diameter of the inner layer tinned copper monofilaments is 0.08mm to 0.12mm, and the diameter of the outer layer tinned copper monofilaments is 0.1mm to 0.15 mm.
Preferably, the insulating layer comprises a fluororesin inner insulating layer, a crosslinked polypropylene foaming layer and a crosslinked polypropylene outer insulating layer from inside to outside in sequence.
Preferably, the fluororesin inner insulating layer is an FEP or PFA insulating layer.
Preferably, the thickness ratio of the crosslinked polypropylene foam layer to the crosslinked polypropylene outer insulation layer is 1:1 to 1: 1.5.
Preferably, the thickness of the fluororesin inner insulating layer is 0.05mm to 0.1 mm.
Preferably, the thickness of the insulating layer is 1.8mm to 2.2 mm.
Preferably, the outer layer of the copper foil belt has a thickness of 8 to 12 μm, and the inner layer of the PTFE resin has a thickness of 10 to 18 μm.
Preferably, the PVC outer sheath has a thickness of 1mm to 5 mm.
Preferably, the spiral angle of the metal braided shielding net is 45 degrees to 60 degrees.
The utility model has the advantages that:
1. in the inner conductor, the linear expansion coefficient of the galvanized steel wire is smaller than that of the tinned copper wire, so that the balanced absorption of the extension amount of the cable is facilitated, the extension force of a cable end is restrained, the laying adaptability of the site in a complex environment is improved, the tensile strength of the galvanized steel wire is greater than that of the tinned copper wire, the occurrence of wire breakage is restrained, the electrical characteristics of good long-distance signal transmission are guaranteed, and the bending resistance of the cable is facilitated to be improved.
2. The double-layer shielding copper-plastic composite tape wrapping shielding layer and the metal woven shielding net can effectively inhibit internal signals or noise from leaking to the outside and inhibit interference from external signals, the copper-plastic composite tape comprises a copper foil tape outer layer and a PTFE resin inner layer, the copper-plastic composite tape is overlapped with the wrapping structure to form an air gap between one part of the copper-plastic composite tape and an insulating layer, the flexibility of the cable is improved, the friction coefficient of the PTFE resin inner layer is small, the stress concentration of the copper foil tape outer layer and the metal woven shielding net is reduced, the torque force during bending is reduced, and the bending resistance is improved, so that the shielding layer is not easy to break, the metal braided shielding net effectively inhibits the deflection and unsmooth phenomena which are easy to occur when the copper-plastic composite belt is wrapped, furthermore, the stability of the shielding characteristic is improved, and the metal braided shielding net can be in good contact with the copper-plastic composite belt, so that the effective shielding performance is ensured. The diameter of the inner layer tinned copper monofilament of the metal braided shielding net is smaller than that of the outer layer tinned copper monofilament, the flexibility of the cable is improved, the braiding density of the inner layer tinned copper monofilament is large, the leakage of high-frequency signals inside the cable to the outside can be prevented, the electrical resistance of the outer layer tinned copper monofilament is small, and the interference from external signals can be inhibited. And, the diameter of the inner layer tinned copper monofilament is different from that of the outer layer tinned copper monofilament, so that the weaving gap can be effectively reduced, the friction phenomenon generated between the tinned copper monofilaments is greatly reduced, the noise shielding characteristic is improved, the flexibility and the torsion resistance of the cable are increased, and the phenomenon of wire breakage is not easy to occur.
3. A gap is formed between the fluororesin inner insulating layer and the inner conductor, so that the tensile force borne by the inner conductor can be reduced, and the crosslinked polypropylene foaming layer bears larger tensile force than the fluororesin inner insulating layer, so that the tensile force borne by the fluororesin inner insulating layer is reduced, the crosslinked polypropylene outer insulating layer is a reinforcing structure of the crosslinked polypropylene foaming layer, the tensile strength and the elongation are higher, the tearing is not easy to occur, and the inner insulating layer is effectively protected.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
In the figure: 1-inner conductor, 11-galvanized steel wire, 12-tinned copper wire, 2-insulating layer, 21-fluororesin inner insulating layer, 22-crosslinked polypropylene foaming layer, 23-crosslinked polypropylene outer insulating layer, 3-copper-plastic composite tape wrapping shielding layer, 4-metal woven shielding net and 5-PVC outer sheath.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses flexible double-deck shielding coaxial cable of preventing broken string, including inner conductor 1, arrange a plurality of tinned copper wires 12 and jointly twist and sticiss formation for the center periphery based on a galvanized steel wire 11 inner conductor 1.
The outer portion of the inner conductor 1 is sequentially coated with an insulating layer 2, a copper-plastic composite tape wrapping shielding layer 3, a metal braided shielding net 4 and a PVC outer sheath 5. Specifically, the insulating layer 2 sequentially comprises a fluororesin inner insulating layer 21, a crosslinked polypropylene foaming layer 22 and a crosslinked polypropylene outer insulating layer 23 from inside to outside. For example, the fluororesin inner insulating layer 21 is an FEP or PFA insulating layer. The thickness of the insulating layer 2 is 1.8mm to 2.2 mm. Further, the thickness of the fluororesin inner insulating layer 21 is 0.05mm to 0.1mm, and the thickness ratio of the crosslinked polypropylene foamed layer 22 to the crosslinked polypropylene outer insulating layer 23 is 1:1 to 1: 1.5.
The copper-plastic composite tape lapping and shielding layer 3 is of a copper-plastic composite tape lapping and lapping structure, the copper-plastic composite tape comprises a copper foil tape outer layer and a PTFE resin inner layer, specifically, the copper foil tape outer layer is 8-12 mu m thick, and the PTFE resin inner layer is 10-18 mu m thick.
The metal woven shielding net 4 is formed by weaving an inner layer tinned copper monofilament and an outer layer tinned copper monofilament in a reverse spiral winding mode, the diameter of the inner layer tinned copper monofilament is smaller than that of the outer layer tinned copper monofilament, the diameter of the inner layer tinned copper monofilament is 0.08mm to 0.12mm, and the diameter of the outer layer tinned copper monofilament is 0.1mm to 0.15 mm. Further, the spiral angle of the metal braided shielding net 4 is 45 degrees to 60 degrees. The PVC outer sheath 5 is 1mm to 5mm thick.
While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.
Claims (9)
1. Flexible double-deck shielding coaxial cable of preventing broken string, characterized by: comprises an inner conductor (1), an insulating layer (2), a copper-plastic composite tape wrapping shielding layer (3), a metal woven shielding net (4) and a PVC outer sheath (5) are sequentially coated outside the inner conductor (1), a plurality of tinned copper wires (12) are arranged around the periphery of the center of a galvanized steel wire (11) and are jointly twisted and compressed to form the inner conductor (1), the copper-plastic composite tape lapping shielding layer (3) is of a copper-plastic composite tape lapping and covering lapping structure, the copper-plastic composite belt comprises a copper foil belt outer layer and a PTFE resin inner layer, the metal braided shielding net (4) is formed by spirally winding and braiding an inner layer of tinned copper monofilaments and an outer layer of tinned copper monofilaments in opposite directions, the diameter of the inner layer tinned copper monofilament is smaller than that of the outer layer tinned copper monofilament, the diameter of the inner layer tinned copper monofilament is 0.08mm to 0.12mm, and the diameter of the outer layer tinned copper monofilament is 0.1mm to 0.15 mm.
2. The flexible disconnection preventing double-shielded coaxial cable according to claim 1, wherein: the insulating layer (2) sequentially comprises a fluororesin inner insulating layer (21), a crosslinked polypropylene foaming layer (22) and a crosslinked polypropylene outer insulating layer (23) from inside to outside.
3. The flexible disconnection preventing double-shielded coaxial cable according to claim 2, wherein: the fluororesin inner insulating layer (21) is an FEP or PFA insulating layer.
4. The flexible disconnection preventing double-shielded coaxial cable according to claim 2, wherein: the thickness ratio of the crosslinked polypropylene foaming layer (22) to the crosslinked polypropylene outer insulation layer (23) is 1:1 to 1: 1.5.
5. The flexible disconnection preventing double-shielded coaxial cable according to claim 2, wherein: the thickness of the fluororesin inner insulating layer (21) is 0.05mm to 0.1 mm.
6. The flexible disconnection preventing double-shielded coaxial cable according to claim 1, wherein: the thickness of the insulating layer (2) is 1.8mm to 2.2 mm.
7. The flexible disconnection preventing double-shielded coaxial cable according to claim 1, wherein: the outer thickness of the copper foil belt is 8-12 μm, and the thickness of the inner PTFE resin layer is 10-18 μm.
8. The flexible disconnection preventing double-shielded coaxial cable according to claim 1, wherein: the thickness of the PVC outer sheath (5) is 1mm to 5 mm.
9. The flexible disconnection preventing double-shielded coaxial cable according to claim 1, wherein: the spiral angle of the metal braided shielding net (4) is 45-60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020825826.2U CN212010390U (en) | 2020-05-18 | 2020-05-18 | Flexible anti-broken double-layer shielding coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020825826.2U CN212010390U (en) | 2020-05-18 | 2020-05-18 | Flexible anti-broken double-layer shielding coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212010390U true CN212010390U (en) | 2020-11-24 |
Family
ID=73411128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020825826.2U Expired - Fee Related CN212010390U (en) | 2020-05-18 | 2020-05-18 | Flexible anti-broken double-layer shielding coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212010390U (en) |
-
2020
- 2020-05-18 CN CN202020825826.2U patent/CN212010390U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201124 |