CN114242314B - Polyester glass fiber covered wire and manufacturing method thereof - Google Patents
Polyester glass fiber covered wire and manufacturing method thereof Download PDFInfo
- Publication number
- CN114242314B CN114242314B CN202111491768.XA CN202111491768A CN114242314B CN 114242314 B CN114242314 B CN 114242314B CN 202111491768 A CN202111491768 A CN 202111491768A CN 114242314 B CN114242314 B CN 114242314B
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- wire
- cladding
- yarns
- copper core
- glass
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- 229920000728 polyester Polymers 0.000 title claims abstract description 57
- 239000003365 glass fiber Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000010410 layer Substances 0.000 claims abstract description 60
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000000835 fiber Substances 0.000 claims abstract description 34
- 238000005452 bending Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 9
- 230000032683 aging Effects 0.000 claims abstract description 8
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000002356 single layer Substances 0.000 claims abstract description 3
- 230000037303 wrinkles Effects 0.000 claims abstract description 3
- 238000005253 cladding Methods 0.000 claims description 67
- 239000011521 glass Substances 0.000 claims description 62
- 238000009413 insulation Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000007767 bonding agent Substances 0.000 claims description 3
- 238000010618 wire wrap Methods 0.000 claims description 3
- 229920004934 Dacron® Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Insulated Conductors (AREA)
Abstract
The polyester glass fiber covered wire comprises a copper core wire with a rectangular cross section and an insulating layer bonded on the outer side of the copper core wire, wherein the insulating layer is formed by melting a wire covering layer coated on the outer side of the copper core wire, the wire of the wire covering layer comprises polyester fibers and glass fibers, the wire covering angle of the inner wire covering layer is less than or equal to 65 degrees through dividing the wire covering layer into an inner layer and an outer layer, the wire covering angles of the outer layer and the inner wire covering layer are equal and opposite, the wire covering direction is opposite, the wire can be ensured to have better winding force, the finally formed insulating layer has better attaching effect, the single-layer wire can be relatively thinner under the same insulating thickness, the finally formed insulating layer has a certain looseness, deformation generated by bending under the aging condition can be absorbed, and the wire covering wire is not easy to wrinkle; according to the manufacturing method of the polyester glass fiber covered wire, the corresponding silk thread formula is selected for wrapping according to the circumference of the copper core wire, so that the wrapping angle of the silk thread is not more than 65 degrees, the steps are simple, the yield is high, and the method is suitable for popularization and use.
Description
Technical Field
The invention relates to the technical field of silk covered wires, in particular to a polyester glass fiber covered wire and a manufacturing method thereof.
Background
The silk-covered wire is a wire using natural silk or glass silk as an insulating cladding, is named after being distinguished from a yarn-covered wire using cotton yarn as an insulating layer, is generally formed by winding artificial glass silk on the wire, and has the characteristics of good insulating property, high mechanical strength and the like, and is widely applied to various electrical equipment.
The polyester glass yarn covered wire is used as one of yarn covered wires, has stable electrical property, and an insulating layer on the polyester glass yarn covered wire has excellent adhesiveness and wear resistance, and is widely applied to stator windings of large and medium-sized steam turbines and hydraulic generators, for example, chinese patent CN201788738U discloses the polyester glass yarn covered wire, but the scheme does not consider the influence of the yarn covered angle of a yarn on the attaching effect of the insulating layer, and only one layer of yarn covered wire layer is used, the insulating layer formed after melting the polyester yarn is compact, and when bending test is carried out after baking for 5 hours (aging) at 205 ℃, the insulating layer on the inner side of a bending part can generate wrinkling phenomenon, and the increasingly severe performance requirements of customers can not be met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the polyester glass fiber covered wire which has good adhesion effect of an insulating layer, proper tightness of the insulating layer and difficult wrinkling of the insulating layer during bending under aging conditions.
In order to achieve the above purpose, the product in the technical scheme provided by the invention is a polyester glass fiber covered wire, comprising:
the cross section of the copper core wire is rectangular;
The insulation layer is bonded to the outer side of the copper core wire, the insulation layer is formed by melting a wire cladding coated on the outer side of the copper core wire, and a silk thread forming the wire cladding comprises polyester yarns and glass yarns;
the wire cladding comprises an inner wire cladding and an outer wire cladding, wherein the wire cladding angle of the inner wire cladding is smaller than or equal to 65 degrees, and the outer wire cladding is equal to the wire cladding angle of the inner wire cladding and opposite in wire cladding direction.
Preferably, the insulation thickness of the insulation layer is 0.20±0.02mm.
Further preferably, the polyester yarn is 33dTex/24f in type, and the glass yarn is 360S/1 and 360S/2 in type.
Further preferably, when the circumference of the copper core wire is greater than or equal to 23mm, the formula of the wire in the inner wire cladding is: 33dTex/24f 42 polyester yarns and 360S/2 96 glass yarns; the formula of the silk thread in the outer silk cladding is as follows: the 33dTex/24f 1 polyester yarns are mixed with the 360S/1 1 glass yarns to prepare 96 single fibers and the 360S/2 39 glass yarns.
Further preferably, when the circumference of the copper core wire is greater than 20mm and less than 23mm, the formula of the wires in the inner wire cladding is: 33dTex/24f 36 polyester yarns and 360S/2 81 glass yarns; the formula of the silk thread in the outer silk cladding is as follows: the 33dTex/24f 1 polyester yarns are mixed with the 360S/1 1 glass yarns to prepare 81 single fibers and 360S/2 30 glass yarns.
Further preferably, when the circumference of the copper core wire is greater than 16mm and less than or equal to 20mm, the formula of the wire in the inner wire cladding is as follows: 33dTex/24f 36 polyester yarns and 360S/2 80 glass yarns; the formula of the silk thread in the outer silk cladding is as follows: the 33dTex/24f 1 polyester yarns are mixed with the 360S/1 1 glass yarns to prepare 80 single fibers and 360S/2 30 glass yarns.
Further preferably, when the circumference of the copper core wire is 16mm or less, the formula of the wire in the inner wire cladding is: mixing 33dTex/24f 1 polyester yarns with 360S/1 1 glass yarns to prepare 48 single fibers and 360S/2 24 glass yarns; the formula of the silk thread in the outer silk cladding is as follows: the 33dTex/24f 1 polyester yarns are mixed with the 360S/1 1 glass yarns to prepare 48 single fibers and 360S/2 24 glass yarns.
Further preferably, the relationship among the perimeter L, the nominal thickness H, and the nominal width S of the copper core wire is l=2 (h+s).
In order to achieve the above purpose, the method in the technical scheme provided by the invention is that the manufacturing method for manufacturing the polyester glass yarn covered wire comprises the following steps:
a, twisting the copper core wire into a fiber according to the circumference of the copper core wire by using a corresponding silk thread formula and winding the fiber into a silk ball for standby;
B, drawing out the fibers in the silk balls corresponding to the inner and outer silk cladding layers, and sequentially wrapping the fibers on the copper core wire, wherein the fibers are flatly paved during wrapping;
And C, heating the wrapped copper core wire in a high-frequency heating mode to melt the polyester yarns in the fibers, and bonding the glass yarns on the copper core wire as a bonding agent.
Preferably, in the step B, after the wrapping of the inner wire cladding is completed, the inner wire cladding is subjected to high-frequency heating, so that the polyester yarns are melted, the glass yarns are bonded on the copper core wire, and after the glass yarns are cooled to normal temperature, the outer wire cladding is wrapped.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
The polyester glass fiber covered wire comprises a copper core wire with a rectangular cross section and an insulating layer bonded on the outer side of the copper core wire, wherein the insulating layer is formed by melting a wire covering layer coated on the outer side of the copper core wire, the wire of the wire covering layer comprises polyester fibers and glass fibers, the wire covering angle of the inner wire covering layer is less than or equal to 65 degrees through dividing the wire covering layer into an inner layer and an outer layer, the wire covering angles of the outer layer and the inner wire covering layer are equal and opposite, the wire covering direction is opposite, the wire can be ensured to have better winding force, the finally formed insulating layer has better attaching effect, the single-layer wire can be relatively thinner under the same insulating thickness, the finally formed insulating layer has a certain looseness, deformation generated by bending under the aging condition can be absorbed, and the wire covering wire is not easy to wrinkle; according to the manufacturing method of the polyester glass fiber covered wire, the corresponding silk thread formula is selected for wrapping according to the circumference of the copper core wire, so that the wrapping angle of the silk thread is not more than 65 degrees, the steps are simple, the yield is high, and the method is suitable for popularization and use.
Drawings
FIG. 1 is a graph showing the effect of bending parts in the aging bending test of polyester glass yarn covered wires in the prior art.
FIG. 2 is a graph showing the effect of bending parts in the aging bending test of the dacron glass yarn covered wire in the preferred embodiment of the invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the attached drawings so that the advantages and features of the present invention will be more readily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
The polyester glass fiber covered wire provided by the invention comprises the following components: the copper core wire and the insulating layer are rectangular in cross section, the insulating layer is adhered to the outer side of the copper core wire, the insulating thickness of the insulating layer is 0.20+/-0.02 mm, the insulating layer is formed by melting a wire cladding layer coated on the outer side of the copper core wire, a silk wire forming the wire cladding layer comprises polyester yarns and glass yarns, the model of the polyester yarns is 33dTex/24f, the model of the glass yarns comprises 360S/1 and 360S/2, the wire cladding layer comprises an inner wire cladding layer and an outer wire cladding layer, the wire cladding angle of the inner wire cladding layer is more than or equal to 35 degrees and less than or equal to 65 degrees, the wire cladding angles of the outer wire cladding layer and the inner wire cladding layer are equal, and the wire cladding directions are opposite.
The advantage of setting like this lies in, can ensure that the silk thread has better winding power, makes the insulating layer that finally forms have better adhesion effect, under equal insulation thickness, can make the silk thread of individual layer thinner relatively, makes the insulating layer that finally forms have certain looseness, can absorb the deformation that the bending produced under the ageing condition, is difficult for wrinkling.
In this embodiment, the wire formulation of the wire cladding is related to the circumference of the copper core wire, specifically, when the circumference of the copper core wire is greater than or equal to 23mm, the formulation of the wire in the inner wire cladding is: 33dTex/24f 42 polyester yarns and 360S/2 96 glass yarns, and the formula of the yarn in the outer yarn cladding is as follows: mixing 33dTex/24f 1 polyester yarns with 360S/1 1 glass yarns to prepare 96 single fibers and 360S/2 39 glass yarns; when the circumference of the copper core wire is larger than 20mm and smaller than 23mm, the formula of the wire in the inner wire cladding is as follows: 33dTex/24f 36 polyester yarns and 360S/2 81 glass yarns, and the formula of the yarn in the outer yarn cladding is as follows: mixing 33dTex/24f 1 polyester yarns with 360S/1 1 glass yarns to prepare 81 single fibers and 360S/2 30 glass yarns; when the circumference of the copper core wire is more than 16mm and less than or equal to 20mm, the formula of the silk yarn in the internal silk cladding is as follows: 33dTex/24f 36 polyester yarns and 360S/2 80 glass yarns, and the formula of the yarn in the outer yarn cladding is as follows: mixing 33dTex/24f 1 polyester yarns with 360S/1 1 glass yarns to prepare 80 single fibers and 360S/2 30 glass yarns; when the circumference of the copper core wire is less than or equal to 16mm, the formula of the wire in the inner wire cladding is as follows: the 33dTex/24f 1 polyester yarns are mixed with the 360S/1 1 glass yarns to prepare 48 single fibers and 360S/2 24 glass yarns, and the formula of the yarn in the outer yarn cladding is as follows: the polyester yarn 33dTex/24f 1 and the glass yarn 360S/1 1 are mixed to form 48 single fibers and 360S/2 24 glass yarns, and the relation among the circumference L, the nominal thickness H and the nominal width S of the copper core wire is L=2 (H+S).
The manufacturing method for manufacturing the polyester glass fiber covered wire provided by the invention comprises the following steps:
a, twisting the copper core wire into a fiber according to the circumference of the copper core wire by using a corresponding silk thread formula and winding the fiber into a silk ball for standby;
B, drawing out the fibers in the silk balls corresponding to the inner and outer silk cladding layers, and sequentially wrapping the fibers on the copper core wire, wherein the fibers are flatly paved during wrapping;
And C, heating the wrapped copper core wire in a high-frequency heating mode to melt the polyester yarns in the fibers, and bonding the glass yarns on the copper core wire as a bonding agent.
The advantage of setting like this is that can ensure that the wire wrap angle less than or equal to 65, and step is simple, the yields is high, suitable use widely.
Preferably, in the step B, after the wrapping of the inner wire cladding is completed, the inner wire cladding is heated at high frequency, so that the polyester yarns are melted, the glass yarns are bonded on the copper core wire, and after the polyester yarns are cooled to normal temperature, the outer wire cladding is wrapped.
The advantage of setting like this lies in, can fully release the winding stress of interior, outer silk covering, avoid simultaneously melting because of mutual crowding effect residual stress.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (2)
1. A dacron glass fiber covered wire, comprising:
The copper core wire is rectangular in cross section, and the relation among the perimeter L, the nominal thickness H and the nominal width S of the copper core wire is L=2 (H+S);
The insulation layer is bonded to the outer side of the copper core wire, the insulation layer is formed by melting a wire cladding coated on the outer side of the copper core wire, the wire cladding comprises an inner wire cladding and an outer wire cladding, and a silk thread forming the wire cladding comprises polyester yarns and glass yarns;
The method is characterized in that:
The insulation thickness of the insulation layer is 0.20+/-0.02 mm;
The wire wrap angle of the inner wire cladding is more than or equal to 35 degrees and less than or equal to 65 degrees, and the wire wrap angle of the outer wire cladding is equal to and opposite to that of the inner wire cladding;
When the circumference of the copper core wire is more than or equal to 23mm, the formula of the silk thread in the internal silk cladding is as follows: 33dTex/24f 42 polyester yarns and 360S/2 96 glass yarns; the formula of the silk thread in the outer silk cladding is as follows: mixing 33dTex/24f 1 polyester yarns with 360S/11 glass yarns to prepare 96 single fibers and 360S/2 39 glass yarns; when the circumference of the copper core wire is larger than 20mm and smaller than 23mm, the formula of the silk thread in the internal silk cladding is as follows: 33dTex/24f 36 polyester yarns and 360S/281 glass yarns; the formula of the silk thread in the outer silk cladding is as follows: mixing 33dTex/24f 1 polyester yarns with 360S/11 glass yarns to prepare 81 single fibers and 360S/2 30 glass yarns; when the circumference of the copper core wire is more than 16mm and less than or equal to 20mm, the formula of the silk thread in the internal silk cladding is as follows: 33dTex/24f 36 polyester yarns and 360S/2 80 glass yarns; the formula of the silk thread in the outer silk cladding is as follows: mixing 33dTex/24f 1 polyester yarns with 360S/11 glass yarns to obtain 80 single fibers and 360S/2 30 glass yarns; when the circumference of the copper core wire is smaller than or equal to 16mm, the formula of the silk thread in the internal silk cladding is as follows: mixing 33dTex/24f 1 polyester yarns with 360S/11 glass yarns to prepare 48 single fibers and 360S/2 24 glass yarns; the formula of the silk thread in the outer silk cladding is as follows: mixing 33dTex/24f 1 polyester yarns with 360S/11 glass yarns to obtain 48 single fibers and 360S/2 24 glass yarns;
The polyester glass yarn covered wire can ensure that the silk yarn has good winding force, the finally formed insulating layer has good adhesion effect, and the single-layer silk yarn can be relatively thin under the same insulating thickness, so that the finally formed insulating layer has certain looseness, and deformation generated by bending under the aging condition is absorbed, and the finally formed insulating layer is not easy to wrinkle.
2. The method for manufacturing the polyester glass yarn covered wire according to claim 1 is characterized by comprising the following steps:
A. According to the circumference of the copper core wire, a corresponding silk thread formula is selected to be stranded into a fiber and wound into a silk ball for standby;
B. drawing out the fibers in the corresponding wire balls of the inner and outer wire cladding, sequentially wrapping the fibers on a copper core wire, flatly laying the fibers during wrapping, carrying out high-frequency heating on the copper core wire after the wrapping of the inner wire cladding is completed, melting the polyester yarns, bonding the glass yarns on the copper core wire, and wrapping the outer wire cladding after the glass yarns are cooled to normal temperature;
C. and heating the wrapped copper core wire in a high-frequency heating mode to melt the polyester yarns in the fibers, and bonding the glass yarns on the copper core wire as a bonding agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111491768.XA CN114242314B (en) | 2021-12-08 | 2021-12-08 | Polyester glass fiber covered wire and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111491768.XA CN114242314B (en) | 2021-12-08 | 2021-12-08 | Polyester glass fiber covered wire and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114242314A CN114242314A (en) | 2022-03-25 |
| CN114242314B true CN114242314B (en) | 2024-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111491768.XA Active CN114242314B (en) | 2021-12-08 | 2021-12-08 | Polyester glass fiber covered wire and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN114242314B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306519A (en) * | 2011-06-29 | 2012-01-04 | 太仓市贯龙电磁线有限公司 | Polyester and glass silk wrapping and sintering copper flat wire |
| CN209657840U (en) * | 2019-05-15 | 2019-11-19 | 上海申茂电磁线有限公司 | A kind of wrapped sintering copper flat wire of ultrathin type dual-polyester glass fiber |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6010788A (en) * | 1997-12-16 | 2000-01-04 | Tensolite Company | High speed data transmission cable and method of forming same |
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2021
- 2021-12-08 CN CN202111491768.XA patent/CN114242314B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306519A (en) * | 2011-06-29 | 2012-01-04 | 太仓市贯龙电磁线有限公司 | Polyester and glass silk wrapping and sintering copper flat wire |
| CN209657840U (en) * | 2019-05-15 | 2019-11-19 | 上海申茂电磁线有限公司 | A kind of wrapped sintering copper flat wire of ultrathin type dual-polyester glass fiber |
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| Publication number | Publication date |
|---|---|
| CN114242314A (en) | 2022-03-25 |
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