CN113410005A - Novel stranded conductor stranding method - Google Patents
Novel stranded conductor stranding method Download PDFInfo
- Publication number
- CN113410005A CN113410005A CN202110716654.4A CN202110716654A CN113410005A CN 113410005 A CN113410005 A CN 113410005A CN 202110716654 A CN202110716654 A CN 202110716654A CN 113410005 A CN113410005 A CN 113410005A
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- stranding
- conductor
- twisting
- strand
- novel
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- 239000004020 conductor Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004891 communication Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000017105 transposition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H01B13/02—Stranding-up
- H01B13/0207—Details; Auxiliary devices
-
- 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
- H01B13/008—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing extensible conductors or cables
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
The invention provides a novel stranded conductor stranding method, and belongs to the technical field of cable processing. The twisting method comprises the steps of paying off a plurality of strands of wires onto a twisting bow after combined zero-tension paying-off and constant-tension back-twisting, and concentrically rotating the twisting bow at a rotating speed of more than 2000r/min to obtain a pre-twisted conductor; and then twisting the pre-twisted conductor for the second time to obtain a multi-strand conductor. The stranding method provided by the invention realizes stranding of the wire at a high rotating speed, the stranding efficiency is improved, and meanwhile, the stranded conductor obtained by the stranding method is stronger in structural stability and better in mechanical property.
Description
Technical Field
The invention relates to the technical field of cable processing, in particular to a novel stranded conductor stranding method.
Background
Along with the continuous evolution of modern communication and cable systems, the requirements of special cables in the communication and cable transmission fields are continuously improved.
In the field of communication, the requirements on performance indexes such as transmission frequency, bandwidth, stability of a cable structure, structural echo, impedance and the like of a special communication cable are also more strict.
In an electric power system, in the prior art, due to cracking of a plastic sheath and other reasons, the cable has the conditions of ground fault, short circuit and the like, once the problems occur, great loss is caused to a user, and great difficulty is brought to maintenance and inspection.
At present, the common stranding process adopts a traditional wire bundling machine, passive paying-off and multi-conductor stranding process for production, and has the problems of uneven tension among single strands of stranded conductors, low production efficiency, low speed and poor structural stability.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a novel stranded conductor stranding method, which realizes stranding of a conductor at a high rotating speed and improves stranding efficiency, and meanwhile, the stranded conductor obtained by the stranding method has stronger structural stability and better mechanical property.
In order to achieve the purpose, the invention adopts the following technical scheme: a novel stranding method of a multi-strand conductor specifically comprises the following steps:
(1) paying off the multi-strand wire to a twisting bow after combined zero-tension paying-off and constant-tension back-twist, and concentrically rotating the twisting bow at a rotating speed of more than 2000r/min to obtain a pre-twisted conductor;
(2) and (2) carrying out secondary stranding on the pre-stranded conductor obtained in the step (1) to obtain a multi-strand conductor.
Further, the number of the twisting bows is even.
Further, the twisting bow is symmetrically arranged.
Further, the outgoing speed of the pre-twisted conductor is the same as the incoming speed of the secondary twisting.
Further, the stranding pitch of the pre-stranded conductor is 16-100 mm.
Further, the stranding pitch of the multi-strand conductor is 8-50 mm.
Compared with the prior art, the invention has the following beneficial effects: according to the twisting method, the multi-strand wire is subjected to zero-tension paying-off and constant-tension back twisting and then is twisted into a shape through the twisting bow, so that the structural stability and the production efficiency of the multi-strand conductor can be improved; simultaneously after through the secondary transposition, can make stranded conductor possess good mechanical properties for the stranded conductor structure is rounder stable more, makes the stranded conductor difficult chap, has promoted the forming speed of transposition pitch simultaneously. The twisting bow can concentrically rotate at the rotating speed of more than 2000r/min, and the wire twisting efficiency can be greatly improved. The stranded conductor obtained by the stranding method of the present invention is used for a cable, so that the cable has better flexibility characteristics.
Detailed Description
The invention provides a novel stranded conductor stranding method, which specifically comprises the following steps:
(1) the multi-strand wire is paid off to an even number of twisting bows after combined zero-tension paying off and constant-tension back twisting, and the prestress on the wire can be eliminated in the constant-tension back twisting process, so that the twisted conductor has better mechanical property; the twisting bows rotate concentrically at the rotating speed of more than 2000r/min, and in order to realize concentric rotation, a person skilled in the art needs to symmetrically arrange an even number of twisting bows so as to keep dynamic balance of each twisting bow in a rotating state; finally, a pre-twisted conductor is obtained, wherein the twisting pitch of the pre-twisted conductor is 16-100 mm, and if the twisting pitch of the pre-twisted conductor is too large, the stability of the conductor structure is deteriorated.
(2) And (2) performing secondary stranding on the pre-stranded conductor obtained in the step (1), wherein when the secondary stranding is performed, the outlet speed of the pre-stranded conductor needs to be kept the same as the inlet speed of the secondary stranding, and the constant take-up and pay-off tension of the conductor is ensured, so that the thickness of the conductor is not uneven due to different drawing forces caused by different tensions, finally obtaining a multi-strand conductor, wherein the stranding pitch of the multi-strand conductor is 8-50 mm, and the multi-strand conductor is ensured to have excellent transmission performance and mechanical and physical properties.
Example 1
The invention provides a novel stranded conductor stranding method, which specifically comprises the following steps:
(1) the four strands of tinned wires are paid off to four twisting bows after combined zero-tension paying off and constant-tension back twisting, the twisting bows rotate concentrically at the rotating speed of 2000r/min, in order to achieve concentric rotation, a person skilled in the art needs to symmetrically arrange the four twisting bows to achieve that each twisting bow keeps dynamic balance in a rotating state, and finally a pre-twisted conductor is obtained, wherein the twisting pitch of the pre-twisted conductor is 16 mm.
(2) And (2) performing secondary stranding on the pre-stranded conductor obtained in the step (1), and when the secondary stranding is performed, keeping the outgoing speed of the pre-stranded conductor to be the same as the incoming speed of the secondary stranding, and finally obtaining four conductors, wherein the stranding pitch of the four conductors is 8 mm.
The surfaces of the four-strand conductors are round, the four-strand conductors are wrapped in the insulating plastic layers to form the cable, the plastic layers of the cable are not easy to crack after the cable is used for a long time, and the cable breaking force and the linear expansion coefficient of the cable are higher than 20% of those of the cable produced by the traditional process.
Example 2
(1) The method comprises the following steps of paying off eight tinned wires to eight twisting bows after combined zero-tension paying-off and constant-tension back-twist, concentrically rotating the twisting bows at a rotating speed of 3000r/min, and symmetrically arranging the eight twisting bows by a person skilled in the art to realize the concentric rotation so as to keep dynamic balance of each twisting bow in a rotating state and finally obtain a pre-twisted conductor, wherein the twisting pitch of the pre-twisted conductor is 100 mm.
(2) And (2) performing secondary stranding on the pre-stranded conductor obtained in the step (1), and when the secondary stranding is performed, keeping the outgoing speed of the pre-stranded conductor to be the same as the incoming speed of the secondary stranding, so as to finally obtain eight-strand conductors, wherein the stranding pitch of the eight-strand conductors is 50 mm.
The surfaces of the eight-strand conductors are round, the eight-strand conductors are wrapped in the insulating plastic layers to form the cable, the plastic layer of the cable is not easy to crack after the cable is used for a long time, and the cable breaking force and the linear expansion coefficient of the cable are higher than 26% of those of the cable produced by the traditional process.
Example 3
(1) The method comprises the steps that 12 strands of tinned wires are paid off to 12 twisting bows after combined zero-tension paying off and constant-tension back twisting, the twisting bows rotate concentrically at the rotating speed of 3600r/min, in order to achieve concentric rotation, a person skilled in the art needs to symmetrically arrange the 12 twisting bows to achieve that each twisting bow keeps dynamic balance in a rotating state, and finally a pre-twisted conductor is obtained, wherein the twisting pitch of the pre-twisted conductor is 48 mm.
(2) And (2) performing secondary stranding on the pre-stranded conductor obtained in the step (1), and when the secondary stranding is performed, keeping the outgoing speed of the pre-stranded conductor to be the same as the incoming speed of the secondary stranding, so as to finally obtain 12 strands of conductors, wherein the stranding pitch of the 12 strands of conductors is 20 mm.
The 12-strand conductor has a round surface, the 12-strand conductor is wrapped in an insulating plastic layer to form the cable, the plastic layer of the cable is not easy to crack after the cable is used for a long time, and the cable breaking force and the linear expansion coefficient of the cable are higher than 31% of those of the cable in the traditional process.
The above description is only an example of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived or reduced or directly or indirectly applied to other related arts using the equivalent flow conversion scheme of the present invention as described in the description of the present invention shall be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A novel stranded conductor stranding method is characterized by comprising the following steps:
(1) paying off the multi-strand wire to a twisting bow after combined zero-tension paying-off and constant-tension back-twist, and concentrically rotating the twisting bow at a rotating speed of more than 2000r/min to obtain a pre-twisted conductor;
(2) and (2) carrying out secondary stranding on the pre-stranded conductor obtained in the step (1) to obtain a multi-strand conductor.
2. The novel stranding method of claim 1 wherein the number of strands is an even number.
3. The novel multi-strand conductor stranding method of claim 2 wherein the strand bow is symmetrically disposed.
4. The novel stranding method of multi-strand conductors of claim 1 wherein the exit velocity of the pre-stranded conductor is the same as the entry velocity of the secondary stranding.
5. The novel stranding method of a multi-strand conductor according to claim 1, wherein a stranding pitch of the pre-stranded conductor is 16-100 mm.
6. The novel stranding method of a multi-strand conductor according to claim 1, wherein a stranding pitch of the multi-strand conductor is 8 to 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110716654.4A CN113410005A (en) | 2021-06-28 | 2021-06-28 | Novel stranded conductor stranding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110716654.4A CN113410005A (en) | 2021-06-28 | 2021-06-28 | Novel stranded conductor stranding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113410005A true CN113410005A (en) | 2021-09-17 |
Family
ID=77679579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110716654.4A Pending CN113410005A (en) | 2021-06-28 | 2021-06-28 | Novel stranded conductor stranding method |
Country Status (1)
| Country | Link |
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| CN (1) | CN113410005A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889304A (en) * | 2021-10-26 | 2022-01-04 | 浙江金桥铜业科技有限公司 | Soft round copper stranded wire stranding method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403071A (en) * | 2011-07-25 | 2012-04-04 | 常州市恒丰铜材有限公司 | Technology for processing ultra fine silver plated alloy wire |
| CN112830342A (en) * | 2021-01-05 | 2021-05-25 | 烽火通信科技股份有限公司 | Active pay-off control system and method |
-
2021
- 2021-06-28 CN CN202110716654.4A patent/CN113410005A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403071A (en) * | 2011-07-25 | 2012-04-04 | 常州市恒丰铜材有限公司 | Technology for processing ultra fine silver plated alloy wire |
| CN112830342A (en) * | 2021-01-05 | 2021-05-25 | 烽火通信科技股份有限公司 | Active pay-off control system and method |
Non-Patent Citations (1)
| Title |
|---|
| 杨进 等: "基于ZigBee通讯的新型高速绞线机控制系统设计", 《电线电缆》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889304A (en) * | 2021-10-26 | 2022-01-04 | 浙江金桥铜业科技有限公司 | Soft round copper stranded wire stranding method |
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Application publication date: 20210917 |
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| RJ01 | Rejection of invention patent application after publication |