CN111863319B - Inner-bundle and outer-twisted cable conductor and processing method thereof - Google Patents
Inner-bundle and outer-twisted cable conductor and processing method thereof Download PDFInfo
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- CN111863319B CN111863319B CN202010719884.1A CN202010719884A CN111863319B CN 111863319 B CN111863319 B CN 111863319B CN 202010719884 A CN202010719884 A CN 202010719884A CN 111863319 B CN111863319 B CN 111863319B
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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
- H01B7/0009—Details relating to the conductive cores
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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
- H01B13/0207—Details; Auxiliary devices
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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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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- Manufacturing & Machinery (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
The invention relates to the technical field of cable conductor processing, and particularly discloses an inner-bundle and outer-twisted cable conductor and a processing method thereof. The conductor comprises a bunch and a stranded wire coated outside the bunch; the wire harness is formed by irregularly arranging a plurality of internal single wires, and the stranded wire is formed by regularly arranging a plurality of outmost single wires. The cable conductor with the inner-bundle outer-twisting structure has the advantages of round appearance and high production efficiency, and the cable conductor prepared by the processing method has uniform insulation thickness and stable quality.
Description
Technical Field
The invention relates to the technical field of cable conductor processing, in particular to an inner-bundle and outer-twisted cable conductor and a processing method thereof.
Background
To improve the flexibility of the cable, the cable conductor is often formed by twisting a plurality of single strands. A wire harness is one of the common forms of bunching of conductors. The wire bunching refers to the process that all single wires are stranded through a doubling die in the same direction. All the single wires of the wire harness only need to pass through a wire doubling die without being arranged in layers, and the distance from each single wire of the wire harness conductor to the central line of the conductor is constantly changed, so the twisting mode is called irregular twisting. Because the single wires participating in twisting are all formed by twisting through only one die, the requirements of the wire harness on twisting equipment are simple, the production efficiency is high, and the diameter of the wire harness is 6mm2And the following conductors of YZ, RV and other products requiring the structure according to the 5 th and 6 th conductor structures are generally produced by adopting a wire-bunching process; because the position of each single wire in the wire harness conductor is variable, the wire harness conductor is not round, the insulation thickness is difficult to ensure to be uniform during insulation extrusion, the phenomenon that the average insulation thickness is larger than normal and the thickness of the thinnest part does not reach the standard often occurs, which is a difficult problem troubling cable manufacturers all the time, the common way of the cable manufacturers is to increase the insulation thickness to ensure that the thinnest part of the insulation reaches the standard, so that the material is wasted, the production cost is increased, and the product quality is influenced.
Disclosure of Invention
In order to overcome the technical defects of non-roundness of a cable conductor, non-uniform insulation thickness and unstable product quality obtained in a wire bundling mode in the prior art, the invention firstly provides an inner-bundle and outer-twisted cable conductor.
The technical problem to be solved by the invention is realized by the following technical scheme:
an inner-bundle and outer-twisted cable conductor comprises a bundle wire and a twisted wire coated outside the bundle wire; the wire harness is formed by irregularly arranging a plurality of internal single wires, and the stranded wire is formed by regularly arranging a plurality of outmost single wires.
The inventor designs the cable conductor with the brand new structure, the conductor structure is convenient to process and produce, can be processed and finished on the same bundle twisting equipment at one time, and is beneficial to improving the production efficiency and saving the production cost; and the obtained cable conductor has round appearance, uniform insulation thickness and stable product quality. The defects of the existing wire harness method for preparing the cable conductor are overcome successfully.
Furthermore, the stranded wire is of a single-layer structure.
Preferably, the number N of the single wires at the outermost layer, the total number N of the single wires, the diameter D of the single wires and the outer diameter D of the conductor satisfy the following relations:
n＝INT{π(D-d)/d}±3；
in the formula: n is the number of single wires on the outermost layer;
d-the outer diameter of the conductor;
n-total number of single lines;
d-diameter of the single line.
Further research by the inventor shows that the number N of the single wires on the outermost layer, the total number N of the single wires, the diameter D of the single wires and the outer diameter D of the conductor meet the relationship, so that the single wires on the outermost layer of the conductor can be tightly arranged.
Preferably, the cable conductor is 6mm2And below cable conductors category 5 or category 6 cable conductors.
The processing method of the inner-bundle and outer-twisted cable conductor comprises the following steps:
before conductor stranding, a positioning wire distributing plate is additionally arranged between a main wire distributing plate and a wire distributing die of bundle stranding equipment, an auxiliary wire distributing die is arranged in the middle of the positioning wire distributing plate, and a plurality of wire distributing positioning holes are uniformly distributed around the auxiliary wire distributing die;
when the conductor is twisted, the N-N internal single wires pass through the middle wire distributing hole of the main wire distributing plate and then enter the auxiliary wire distributing die in the middle of the positioning wire distributing plate; the N outermost single wires pass through the wire distributing holes on the periphery of the main wire distributing plate and then pass through the wire distributing positioning holes on the positioning wire distributing plate, and are combined with the N-N inner single wires in the wire combining die; and then entering a stranding cage for stranding to obtain the inner-bundle and outer-stranded cable conductor.
The inventor researches to show that in the process of preparing a cable conductor in a bundle twisting mode, a positioning branch board is additionally arranged between a main branch board and a doubling die; twisting the conductor by combining the positioning wire distributing plate in the above mode; the one-time processing on the same bundle twisting equipment can be completed, so that the production efficiency is improved, and the production cost is saved; the cable conductor obtained by the method has the advantages of round appearance, uniform insulation thickness and stable product quality. The processing method successfully overcomes the defects of the existing wire harness mode for processing the cable conductor.
Preferably, the number N of the single wires at the outermost layer in the cable conductor, the total number N of the single wires, the diameter D of the single wires and the outer diameter D of the conductor satisfy the following relations:
n＝INT{π(D-d)/d}±3；
in the formula: n is the number of single wires on the outermost layer;
d-the outer diameter of the conductor;
n-total number of single lines;
d-diameter of the single line.
Further research by the inventor shows that in the processing process, the number N of the single wires at the outermost layer, the total number N of the single wires, the diameter D of the single wires and the outer diameter D of the conductor meet the relationship, so that the single wires at the outermost layer of the conductor can be tightly arranged.
Preferably, the number of the stranded wire positioning holes in the positioning branching plate is equal to that of the single wires on the outermost layer;
after the n outmost single wires pass through the wire distributing holes on the periphery of the wire distributing plate, one single wire passes through the wire distributing positioning holes on the positioning wire distributing plate.
Further research by the inventor shows that the number of the positioning holes is equal to that of the single wires on the outermost layer, so that the single wires on the outermost layer are uniformly distributed, and the single wires on the outermost layer can be prevented from jumping in the twisting process.
Preferably, the number of the stranded wire positioning holes on the positioning branching plate is smaller than that of the single wires on the outermost layer;
after the n outmost single wires pass through the peripheral branching holes of the branching plate, part of the stranded wire positioning holes are divided into two parts per hole, and part of the stranded wire positioning holes are divided into one part per hole and pass through the stranded wire positioning holes in the positioning branching plate respectively;
two holes are uniformly distributed with one hole.
Further research by the inventor shows that in the actual processing process, when the number of the single wires on the outermost layer is larger than that of the stranded wire positioning holes, part of the stranded wire positioning holes can be divided into two stranded wire positioning holes per hole, and part of the stranded wire positioning holes pass through the stranded wire positioning holes one by one per hole, but the two stranded wire positioning holes per hole and the stranded wire positioning holes per hole must be uniformly distributed, otherwise, wire jumping is easy to occur on the single wires on the outermost layer in the stranding process. Meanwhile, the single wire at the outermost layer is prohibited from passing through the stranded wire positioning hole according to three or more than one hole; otherwise, the cable conductor with round appearance, uniform insulation thickness and stable product quality can not be obtained.
Preferably, the distances between the positioning branching board and the main branching board and the doubling die are respectively 5-20 cm.
Preferably, the conductor stranding is finished on the same bundle stranding equipment in one step.
Preferably, the cable conductor is 6mm2And below cable conductors category 5 or category 6 cable conductors.
Has the advantages that: the invention provides a brand-new preparation method of an inner-bundle outer-twisted structure cable conductor, the inner-bundle outer-twisted structure cable conductor prepared by the method has round appearance, high production efficiency, uniform insulation thickness and stable quality, and the method is particularly suitable for 6mm2And the following production of conductors of 5 th and 6 th categories.
Drawings
Fig. 1 shows a structure diagram of an inner-bundle outer-twisted structure cable conductor.
Fig. 2 is a schematic diagram showing a twisting process of a cable conductor with an inner-bundle outer-twisting structure.
Fig. 3 is a schematic plan view of the positioning wire-distributing plate.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It should be noted that the bunching devices (including the branching plate and the stranding cage) described in the following embodiments all employ bunching devices (including the branching plate and the stranding cage) that are conventional in the art; the doubling die is a conventional doubling die in the field, and the aperture size of the die meets the requirements of a stranding process.
Furthermore, it is to be understood that one or more method steps mentioned in the present invention does not exclude that other method steps may also be present before or after the combined steps, or that other method steps may be inserted between these explicitly mentioned steps, unless otherwise indicated; it should also be understood that the combination of the stranding device, the main distribution board, the auxiliary distribution board, the doubling die and the stranding cage as mentioned in the present invention does not exclude the possibility of other devices/means being present before or after the device.
Example 1
As shown in fig. 1, the present embodiment provides an inner-strand and outer-strand cable conductor, in which a bundle 11 formed by irregularly arranging a plurality of inner single wires is disposed, and the bundle 11 is coated with a layer of stranded wires 12 formed by regularly arranging a plurality of outermost single wires.
The conductor structure of the inner-bundle outer-twisted cable is 48/0.25, namely the total number of the single wires is 48, the diameter of the single wire is 0.25mm, the outer diameter of the single wire is 2.0mm, and the number n of the single wires of the outermost layer is 21 (determined according to the formula n-INT { pi (D-D)/D } + -3).
The number of the outermost single wires constituting the strand 12 is directly determined to be 21 and the number of the inner single wires constituting the bundle 11 is determined to be 27, irrespective of the presence of the compaction during the stranding process.
As shown in fig. 2, before conductor stranding, a positioning branching board 24 is added between a main branching board 23 and a doubling die 25, and the distances from the positioning branching board 24 to the main branching board 23 and the doubling die 31 are 8cm and 9cm respectively.
As shown in fig. 3, an auxiliary doubling die 31 is installed in the middle of the positioning branching plate 24 for bundling 27 internal single wires, and 21 strand positioning holes 32 are uniformly distributed around the auxiliary doubling die 31 for positioning 21 outermost single wires.
As shown in fig. 2 and 3, when the conductor is twisted, 27 internal single wires 21 pass through the branching plate in a normal wire-bundling manner and then enter the auxiliary branching die 31 in the middle of the positioning branching plate 24; after passing through the main branching plate 23, the 21 outermost single wires 22 respectively pass through the stranded wire positioning holes 32 on the positioning branching plate 24 in a manner that one single wire is distributed uniformly in each hole, are merged with the 27 internal single wires 21 in the doubling die 25, and then enter the stranding machine stranding cage; and (4) adjusting and keeping the tension of the single wires at the outermost layer uniform, and twisting according to a normal wire harness operation flow to obtain the cable conductor with the inner-harness outer-twist structure.
Example 2
As shown in fig. 1, the present embodiment provides an inner-strand and outer-strand cable conductor, in which a bundle 11 formed by irregularly arranging a plurality of inner single wires is disposed, and the bundle 11 is coated with a layer of stranded wires 12 formed by regularly arranging a plurality of outermost single wires.
The conductor structure of the inner-bundle outer-twisted cable is 84/0.30, namely the total number of the single wires is 84, the diameter of the single wire is 0.30mm, the outer diameter of the single wire is 3.2mm, and the number n of the single wires of the outermost layer is 30 (determined according to the formula n-INT { pi (D-D)/D } + -3).
Considering that there is a certain degree of compression during the stranding process, it is determined that 28 single wires constitute the outermost layer of the stranded wire 12 and 56 single wires constitute the inner bundle 11.
As shown in fig. 2, before conductor stranding, a positioning branching board 24 is added between a main branching board 23 and a doubling die 25, and the distances from the positioning branching board 24 to the main branching board 23 and the doubling die 31 are 15cm and 15cm respectively.
As shown in fig. 3, an auxiliary doubling die 31 is installed in the middle of the positioning branching plate 24 and used for combining 56 internal single wires, and 24 stranded wire positioning holes 32 are uniformly distributed around the auxiliary doubling die 31 and used for positioning 28 outermost single wires.
As shown in fig. 2 and 3, when the conductor is twisted, 56 internal single wires 21 pass through the branching plate in a normal wire-bundling manner and then enter the auxiliary branching die 31 in the middle of the positioning branching plate 24; after passing through the main branch plate 23, 28 outermost single wires 22 respectively penetrate two single wires through four stranded wire positioning holes in two mutually perpendicular diameter directions, and the other single wires penetrate through the rest holes respectively, and then are combined with 56 internal single wires 21 after passing through 24 stranded wire positioning holes 32 in the doubling die 25 and enter a stranding cage of the stranding machine; and (4) adjusting and keeping the tension of the single wires at the outermost layer uniform, and twisting according to a normal wire harness operation flow to obtain the cable conductor with the inner-harness outer-twist structure.
Example 3
As shown in fig. 1, the present embodiment provides an inner-strand and outer-strand cable conductor, in which a bundle 11 formed by irregularly arranging a plurality of inner single wires is disposed, and the bundle 11 is coated with a layer of stranded wires 12 formed by regularly arranging a plurality of outermost single wires.
The conductor structure of the inner-bundle outer-twisted cable is 188/0.20, namely the total number of the single wires is 188, the diameter of the single wires is 0.20mm, the outer diameter of the conductor is 3.2mm, and the number n of the single wires of the outermost layer is 47 (determined according to the formula n-INT { pi (D-D)/D } + -3).
Considering that there is a certain degree of compression during the stranding process, it is determined that the outermost single wires constituting the stranded wire 12 are 46, and the inner single wires constituting the bundle wire 11 are 142.
As shown in fig. 2, before conductor stranding, a positioning branching board 24 is added between a main branching board 23 and a doubling die 25, and the distances from the positioning branching board 24 to the main branching board 23 and the doubling die 31 are 20cm and 19cm respectively.
As shown in fig. 3, an auxiliary doubling die 31 is installed in the middle of the positioning branching plate 24 for combining 142 internal single wires, and 24 strand positioning holes 32 are uniformly distributed around the auxiliary doubling die 31 for positioning 46 outermost single wires.
As shown in fig. 2 and 3, when the conductor is twisted, 142 internal single wires 21 pass through the branching plate in a normal wire-bundling manner and then enter the auxiliary branching die 31 in the middle of the positioning branching plate 24; after the 46 outermost single wires 22 pass through the main wire dividing plate 23, two wire-stranding positioning holes in a certain diameter direction are respectively penetrated by one single wire, the rest holes are respectively penetrated by two single wires, and the two single wires and the 142 internal single wires 21 are combined in the doubling die 25 through 24 positioning holes and then enter a stranding machine stranding cage; and (4) adjusting and keeping the tension of the single wires at the outermost layer uniform, and twisting according to a normal wire harness operation flow to obtain the cable conductor with the inner-harness outer-twist structure.
Claims (7)
1. The inner-bundle and outer-twisted cable conductor is characterized by comprising a bundle wire and a twisted wire coated outside the bundle wire; the wire harness is formed by irregularly arranging a plurality of internal single wires, and the stranded wire is formed by regularly arranging a plurality of outmost single wires;
the number N of the single wires at the outermost layer, the total number N of the single wires, the diameter D of the single wires and the outer diameter D of the conductor satisfy the following relations:
n＝INT{π(D-d)/d}±3；
in the formula: n is the number of single wires on the outermost layer;
d-the outer diameter of the conductor;
n-total number of single lines;
d-diameter of the single line.
2. The inner-strand outer-strand cable conductor as claimed in claim 1, wherein the strands are of a single-layer structure.
3. The method for processing the inner-bundle outer-twisted cable conductor as claimed in any one of claims 1 to 2, characterized by comprising the following steps:
before conductor stranding, a positioning wire distributing plate is additionally arranged between a main wire distributing plate and a wire distributing die of bundle stranding equipment, an auxiliary wire distributing die is arranged in the middle of the positioning wire distributing plate, and a plurality of wire distributing positioning holes are uniformly distributed around the auxiliary wire distributing die;
when the conductor is twisted, the N-N internal single wires pass through the middle wire distributing hole of the main wire distributing plate and then enter the auxiliary wire distributing die in the middle of the positioning wire distributing plate; the N outermost single wires pass through the wire distributing holes on the periphery of the main wire distributing plate and then pass through the wire distributing positioning holes on the positioning wire distributing plate, and are combined with the N-N inner single wires in the wire combining die; and then entering a stranding cage for stranding to obtain the inner-bundle and outer-stranded cable conductor.
4. The method for processing the inner-bundle and outer-twisted cable conductor according to claim 3, wherein the number of the twisted wire positioning holes on the positioning and branching plate is equal to the number of the single wires on the outermost layer;
after the n outmost single wires pass through the wire distributing holes on the periphery of the wire distributing plate, one single wire passes through the wire distributing positioning holes on the positioning wire distributing plate.
5. The method for processing the inner-bundle and outer-twisted cable conductor according to claim 3, wherein the number of the twisted wire positioning holes on the positioning and branching plate is less than that of the outermost single wires;
after the n outmost single wires pass through the peripheral branching holes of the branching plate, part of the stranded wire positioning holes are divided into two parts per hole, and part of the stranded wire positioning holes are divided into one part per hole and pass through the stranded wire positioning holes in the positioning branching plate respectively;
two holes are uniformly distributed with one hole.
6. The method for processing the inner-bundle outer-twisted cable conductor according to claim 3, wherein the distances between the positioning branch board and the main branch board and the doubling die are respectively 5-20 cm.
7. The method for processing the inner-bundle and outer-twisted cable conductor according to claim 3, wherein the twisting of the conductor is completed on the same bundle twisting equipment at one time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010719884.1A CN111863319B (en) | 2020-07-23 | 2020-07-23 | Inner-bundle and outer-twisted cable conductor and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010719884.1A CN111863319B (en) | 2020-07-23 | 2020-07-23 | Inner-bundle and outer-twisted cable conductor and processing method thereof |
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| CN111863319A CN111863319A (en) | 2020-10-30 |
| CN111863319B true CN111863319B (en) | 2021-10-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5213644A (en) * | 1991-03-20 | 1993-05-25 | Southwire Company | Method of and apparatus for producing moisture block stranded conductor |
| CN201741506U (en) * | 2010-07-26 | 2011-02-09 | 苏州宝兴电线电缆有限公司 | Conductor bunching device |
| CN105261424A (en) * | 2015-11-12 | 2016-01-20 | 江苏亨通电子线缆科技有限公司 | One-time bunch strand normal molding method and apparatus |
| CN205984445U (en) * | 2016-08-30 | 2017-02-22 | 成都德源电缆有限公司 | Stranded cable conductor stranding mould |
| CN208767037U (en) * | 2018-10-15 | 2019-04-19 | 长城汽车股份有限公司 | Cable core, cable and automotive electrical system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6716538A (en) * | 1967-12-05 | 1969-06-09 | ||
| US3759518A (en) * | 1971-10-13 | 1973-09-18 | J Mroz | Foot impellent toy |
| TW305377U (en) * | 1993-10-13 | 1997-05-11 | Tokyo Rope Mfg Co | Wire rope which is hard to twist |
| US5418878A (en) * | 1994-05-09 | 1995-05-23 | Metropolitan Communication Authority, Inc. | Multi-mode communications cable having a coaxial cable with twisted electrical conductors and optical fibers |
| DK201970633A1 (en) * | 2018-10-11 | 2020-05-18 | Aptiv Technologies Limited | Automotive communications cable |
-
2020
- 2020-07-23 CN CN202010719884.1A patent/CN111863319B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5213644A (en) * | 1991-03-20 | 1993-05-25 | Southwire Company | Method of and apparatus for producing moisture block stranded conductor |
| CN201741506U (en) * | 2010-07-26 | 2011-02-09 | 苏州宝兴电线电缆有限公司 | Conductor bunching device |
| CN105261424A (en) * | 2015-11-12 | 2016-01-20 | 江苏亨通电子线缆科技有限公司 | One-time bunch strand normal molding method and apparatus |
| CN205984445U (en) * | 2016-08-30 | 2017-02-22 | 成都德源电缆有限公司 | Stranded cable conductor stranding mould |
| CN208767037U (en) * | 2018-10-15 | 2019-04-19 | 长城汽车股份有限公司 | Cable core, cable and automotive electrical system |
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| CN111863319A (en) | 2020-10-30 |
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