CN111091926A - Eight-type wire and production process thereof - Google Patents
Eight-type wire and production process thereof Download PDFInfo
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- CN111091926A CN111091926A CN202010083493.5A CN202010083493A CN111091926A CN 111091926 A CN111091926 A CN 111091926A CN 202010083493 A CN202010083493 A CN 202010083493A CN 111091926 A CN111091926 A CN 111091926A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1033—Screens specially adapted for reducing interference from external sources composed of a wire-braided conductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/08—Screens specially adapted for reducing cross-talk
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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
- H01B13/02—Stranding-up
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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
- H01B13/02—Stranding-up
- H01B13/04—Mutually positioning pairs or quads to reduce cross-talk
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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
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or 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
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
Abstract
The invention discloses an eight-type wire, which comprises four groups of twisted-pair wire pairs, a linear bracket, a tinned copper wire shielding layer and a sheath; a linear bracket is arranged between the four groups of twisted-pair wire pairs; two groups of twisted-pair line pairs are respectively arranged on two sides of the linear bracket; the tinned copper wire shielding layer is braided outside the four groups of twisted pairs after cabling and shaping; the tinned copper wire shielding layer is externally coated with a sheath; each twisted pair in the four twisted pairs comprises two conductors, an insulating layer and an aluminum foil layer; each conductor is coated with an insulating layer to form a core wire; the two core wires are twisted pairwise into a group of twisted pair wires by adopting a back-twist pair-twist technology; each group of twisted pair wires is externally wrapped with an aluminum foil layer. The eight lines of the invention improve the transmission performance and eliminate the electromagnetic interference between the line pairs.
Description
Technical Field
The invention relates to the technical field of cable tools, in particular to an eight-type cable and a production process thereof.
Background
With the rapid development of data communication and information technology, the rapid development of network technology and the continuous improvement of computer performance, people have higher and higher requirements on the performance of the comprehensive wiring system. From traditional audio copper core twisted-pair local area network cable to today's up to gigabit ratio local area network technology, with increasing network speed, it means that the higher the operating frequency, the easier it is to generate electromagnetic radiation and capacitive coupling. Meanwhile, new electromagnetic interference sources are continuously generated in the surrounding environment, the radiation generated when the network working frequency is higher is more serious, the balance characteristic of the UTP non-shielding data cable is not enough to offset the electromagnetic radiation of the high-speed network and the external electromagnetic interference (the electromagnetic compatibility can be only met when 30-40 MHz data is transmitted), and the shielding technology can effectively prevent the external electromagnetic interference from entering the inside of the cable (the skin effect of a metal shielding layer) and simultaneously prevent signals in the cable from radiating outwards (the reflection effect of the metal shielding layer).
Disclosure of Invention
The technical problem to be solved by the invention is to provide an eight-type wire, which improves the transmission performance and eliminates the electromagnetic interference between wire pairs.
In order to solve the technical problems, the invention adopts the following technical scheme: an eight-type wire comprises four groups of twisted-pair wire pairs, a linear bracket, a tinned copper wire shielding layer and a sheath; a linear bracket is arranged between the four groups of twisted-pair wire pairs; two groups of twisted-pair line pairs are respectively arranged on two sides of the linear bracket; the tinned copper wire shielding layer is braided outside the four groups of twisted pairs after cabling and shaping; the tinned copper wire shielding layer is externally coated with a sheath;
each twisted pair in the four groups of twisted pairs comprises two conductors, an insulating layer and an aluminum foil layer; each conductor is coated with an insulating layer to form a core wire; the two core wires are twisted pairwise into a group of twisted pair wires by adopting a back-twist pair-twist technology; each group of twisted pair wires is externally wrapped with an aluminum foil layer.
Further, the conductor has a gauge of 22 awg.
Further, the twisted pair has a lay length of 92.
Further, the coverage of the aluminum foil layer is greater than 25%.
The invention also provides a process for producing the eight types of threads according to claim 1, comprising the following steps:
1) preparing a foaming core wire: selecting a copper rod material, reducing the section and increasing the length of the copper rod material by a wire drawing machine through a plurality of die holes of a drawing die to prepare core wire conductors with the specification of 22awg, selecting 8 core wire conductors, and wrapping an insulating layer outside each single wire conductor;
2) two sinle silks are twisted in pairs: the two core wires are a group of twisted wire pairs, and are twisted together by adopting a pair twisting structure; the lay length is 92; the eight core wires form four groups of twisted wire pairs;
3) a lapping process: wrapping aluminum foils outside each group of line pairs, so that the aluminum foils are tightly wrapped along the line pair twisted structure, and the overlapping rate of the aluminum foils reaches more than 25%;
4) four pairs of cabling: the cable is formed by adopting a paying-off and back-twisting cable-former, so that the structure and the stress of the cable pair are always kept unchanged before the cable pair is formed and shaped, and the structure of the cable pair is protected to the maximum extent;
5) arranging a linear bracket: arranging a linear bracket on the four groups of twisted-pair line pairs;
6) weaving: the tin-copper wire shielding layer is externally woven on the four twisted-pair wires to prevent external electromagnetic interference, and the shielding rate is more than or equal to 60% by adopting a total shielding structure;
7) sheathing: and finally, extruding a layer of sheath outside the tinned copper braid to protect the cable.
Further, in the step (1), on-line monitoring equipment is adopted to monitor the drawing consistency of the conductor on line, so that the diameter of the drawn conductor is consistent, and when diameter fluctuation is detected, all parameters of the wire drawing machine are automatically adjusted.
The invention has the beneficial effects that:
1) the invention arranges the linear support in the cable, so that the line pairs at the two sides of the support can be independently shielded, and the electromagnetic interference between the line pairs is effectively eliminated.
2) In the invention, due to the arrangement of the inner cavity type shielding structure (the straight bracket), unit shielding layers of each pair of wires are reduced, and a larger lifting space is obtained in cost.
3) According to the invention, the copper rod is stretched into the conductor of 22awg type, the consistency of the conductor is controlled on line, and the stability of cable transmission is improved.
4) The invention realizes the prevention of electromagnetic interference and electromagnetic radiation through the reflection, absorption and skin effect of the aluminum foil layer and the tinned copper wire shielding layer, effectively prevents external electromagnetic interference from entering the cable, simultaneously prevents internal signals from radiating and interfering the work of other equipment, and greatly improves the return loss, the characteristic impedance and the crosstalk attenuation of the 8-class digital cable.
5) The eight types of lines of the invention support a bandwidth of 2000MHz and a transmission rate of up to 40Gb/s, but the maximum transmission distance is only 30 m.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described by the following detailed description.
Example 1
As shown in fig. 1, the eight-type cable of the present invention includes four twisted pair cables 1, a linear bracket 2, a tinned copper wire shield 3, and a sheath 4; a linear bracket 2 is arranged between the four groups of twisted pairs 1; two groups of twisted pair lines 1 are respectively arranged on two sides of the linear bracket 2; the four groups of twisted pair lines 1 are cabled and shaped, and then a tinned copper wire shielding layer 3 is braided outside the twisted pair lines; the tinned copper wire shielding layer 5 is coated with a sheath 4;
each twisted pair 1 of the four groups of twisted pairs 1 comprises two conductors 5, an insulating layer 6 and an aluminum foil layer 7; each conductor 1 is coated with an insulating layer 6 to form a core wire; the two core wires are twisted pairwise into a group of twisted pair wires by adopting a back-twist pair-twist technology; each twisted pair 1 is wrapped with an aluminum foil layer 7.
The specification of the conductor 5 is 22awg, and the lay length of the twisted pair is 92. The coverage of the aluminium foil layer 7 is more than 25%.
In order to ensure the qualification of crosstalk, 4 groups of line pairs adopt a twisted structure, and in order to ensure the minimization of the electromagnetic interference influence among the line pairs, an aluminum foil shielding structure is used; in order to make the gap of the aluminum foil coating close as small as possible, the aluminum foil is coated in a wrapping mode, so that the aluminum foil is tightly coated along the pair-twisted structure of the line pair, and in addition, the overlapping rate of the aluminum foil reaches more than 25%.
In order to prevent external electromagnetic interference, the invention adopts a total shielding structure, adopts tinned copper to weave total shielding, has the shielding rate of more than or equal to 60 percent, obtains the maximization of the electromagnetic interference resistance effect, and finally extrudes a layer of outer cover outside the cable core to protect the cable.
Example 2
The production process of the eight-type wire comprises the following specific steps: the method comprises the following steps:
1) preparing a foaming core wire: selecting a copper rod material, reducing the section and increasing the length of the copper rod material by a wire drawing machine through a plurality of die holes of a drawing die to prepare core wire conductors with the specification of 22awg, selecting 8 core wire conductors, and wrapping an insulating layer outside each single wire conductor; and the on-line monitoring equipment is adopted to monitor the stretching consistency of the conductor on line, so that the diameter of the stretched conductor is consistent, and when the diameter fluctuation is detected, all parameters of the wire drawing machine are automatically adjusted.
2) Two sinle silks are twisted in pairs: the two core wires are a group of twisted wire pairs, and are twisted together by adopting a pair twisting structure; the lay length is 92; the eight core wires form four groups of twisted wire pairs;
3) a lapping process: wrapping aluminum foils outside each group of line pairs, so that the aluminum foils are tightly wrapped along the line pair twisted structure, and the overlapping rate of the aluminum foils reaches more than 25%;
4) four pairs of cabling: the cable is formed by adopting a paying-off and back-twisting cable-former, so that the structure and the stress of the cable pair are always kept unchanged before the cable pair is formed and shaped, and the structure of the cable pair is protected to the maximum extent;
5) arranging a linear bracket: arranging a linear bracket on the four groups of twisted-pair line pairs;
6) weaving: the tin-copper wire shielding layer is externally woven on the four twisted-pair wires to prevent external electromagnetic interference, and the shielding rate is more than or equal to 60% by adopting a total shielding structure;
7) sheathing: and finally, extruding a layer of sheath outside the tinned copper braid to protect the cable.
The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents of the present invention as claimed are all described in the technical claims.
Claims (6)
1. An eight-type wire, characterized in that: the device comprises four groups of twisted-pair wire pairs (1), a linear bracket (2), a tinned copper wire shielding layer (3) and a sheath (4); a linear bracket (2) is arranged in the middle of the four twisted wire pairs (1); two groups of twisted-pair line pairs (1) are respectively arranged on two sides of the linear bracket (2); the four groups of twisted pair wires (1) are cabled and shaped, and then a tinned copper wire shielding layer (3) is braided outside the cabled and shaped twisted pair wires; the tinned copper wire shielding layer (5) is coated with a sheath (4);
each group of twisted pair (1) in the four groups of twisted pair (1) comprises two conductors (5), an insulating layer (6) and an aluminum foil layer (7); each conductor (1) is coated with an insulating layer (6) to form a core wire; the two core wires are twisted pairwise into a group of twisted pair wires by adopting a back-twist pair-twist technology; each group of twisted pair wires (1) is wrapped with an aluminum foil layer (7).
2. An eight-type cord according to claim 1, wherein: the conductor (5) has a gauge of 22 awg.
3. An eight-type cord according to claim 1, wherein: the twisted pair has a lay length of 92.
4. An eight-type cord according to claim 1, wherein: the coverage of the aluminium foil layer (7) is more than 25%.
5. A production process for producing the eight-type wire of claim 1, characterized in that: the method comprises the following steps:
1) preparing a foaming core wire: selecting a copper rod material, reducing the section and increasing the length of the copper rod material by a wire drawing machine through a plurality of die holes of a drawing die to prepare core wire conductors with the specification of 22awg, selecting 8 core wire conductors, and wrapping an insulating layer outside each single wire conductor;
2) two sinle silks are twisted in pairs: the two core wires are a group of twisted wire pairs, and are twisted together by adopting a pair twisting structure, and the twisting distance is 92; the eight core wires form four groups of twisted wire pairs;
3) a lapping process: wrapping aluminum foils outside each group of line pairs, so that the aluminum foils are tightly wrapped along the line pair twisted structure, and the overlapping rate of the aluminum foils reaches more than 25%;
4) four pairs of cabling: the cable is formed by adopting a paying-off and back-twisting cable-former, so that the structure and the stress of the cable pair are always kept unchanged before the cable pair is formed and shaped, and the structure of the cable pair is protected to the maximum extent;
5) arranging a linear bracket: arranging a linear bracket on the four groups of twisted-pair line pairs;
6) weaving: the tin-copper wire shielding layer is externally woven on the four twisted-pair wires to prevent external electromagnetic interference, and the shielding rate is more than or equal to 60% by adopting a total shielding structure;
7) sheathing: and finally, extruding a layer of sheath outside the tinned copper braid to protect the cable.
6. The production process of eight types of wires according to claim 3, characterized in that: and (2) adopting an online monitoring device to monitor the stretching consistency of the conductor in the step (1) online, so that the diameter of the stretched conductor is consistent, and automatically adjusting all parameters of the wire drawing machine when diameter fluctuation is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083493.5A CN111091926A (en) | 2020-02-09 | 2020-02-09 | Eight-type wire and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083493.5A CN111091926A (en) | 2020-02-09 | 2020-02-09 | Eight-type wire and production process thereof |
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| CN111091926A true CN111091926A (en) | 2020-05-01 |
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| CN202010083493.5A Pending CN111091926A (en) | 2020-02-09 | 2020-02-09 | Eight-type wire and production process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113205920A (en) * | 2021-04-21 | 2021-08-03 | 浙江一舟电子科技股份有限公司 | Star-shaped eight-type net wire and manufacturing method thereof |
| CN116936194A (en) * | 2023-09-08 | 2023-10-24 | 量子科技长三角产业创新中心 | Direct current wire forming method with extremely low heat conductivity and direct current wire for quantum computer |
-
2020
- 2020-02-09 CN CN202010083493.5A patent/CN111091926A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113205920A (en) * | 2021-04-21 | 2021-08-03 | 浙江一舟电子科技股份有限公司 | Star-shaped eight-type net wire and manufacturing method thereof |
| CN116936194A (en) * | 2023-09-08 | 2023-10-24 | 量子科技长三角产业创新中心 | Direct current wire forming method with extremely low heat conductivity and direct current wire for quantum computer |
| CN116936194B (en) * | 2023-09-08 | 2023-12-15 | 量子科技长三角产业创新中心 | Direct current wire forming method with extremely low heat conductivity and direct current wire for quantum computer |
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