CN111128451B - Method for manufacturing coaxial cable structure - Google Patents

Method for manufacturing coaxial cable structure Download PDF

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Publication number
CN111128451B
CN111128451B CN201911201682.1A CN201911201682A CN111128451B CN 111128451 B CN111128451 B CN 111128451B CN 201911201682 A CN201911201682 A CN 201911201682A CN 111128451 B CN111128451 B CN 111128451B
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conductor wire
wire core
coating
layer
abs
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CN111128451A (en
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王醒东
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Hangzhou Futong Electric Wire & Cable Co ltd
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Hangzhou Futong Electric Wire & Cable Co ltd
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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
    • 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
    • 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
    • H01B13/016—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing co-axial cables
    • 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
    • H01B13/067—Insulating coaxial cables
    • 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
    • H01B13/14—Insulating conductors or cables by extrusion
    • 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
    • H01B13/14—Insulating conductors or cables by extrusion
    • H01B13/148—Selection of the insulating material therefor
    • 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
    • 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
    • H01B13/225—Screening coaxial cables
    • 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
    • H01B7/02—Disposition of insulation
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather

Abstract

The application discloses a manufacturing method of a coaxial cable structure, which comprises the following steps: heating and melting PE in a first coating device and injecting the PE into a coating die on the first coating device; the surface of the conductor wire core is wrapped with a first coating layer made of PE material; heating and melting the PE, and injecting the PE into a second coating device, wherein the surface of the conductor wire core is coated with a foaming insulating layer and a second coating layer; the conductor wire core penetrates through the metal shielding layer coating device, and the surface of the conductor wire core is sleeved with a metal shielding layer; heating and melting ABS and injecting the ABS into a third coating device, wherein the conductor wire core penetrates through the third coating device at a constant speed, and the surface of the conductor wire core is coated with a sealing layer made of ABS; the conductor wire core passes through the cooling device, and the sealing layer made of the ABS material is cooled and solidified. Through at the outer cladding sealing layer of metallic shield, can effectively prolong coaxial cable structure's the latency, promote the flexibility of using, avoid the emergence of the bad or even scrapped condition of oxidation, practiced thrift material cost.

Description

Method for manufacturing coaxial cable structure
The application is a divisional application with application date of 09 and 27 in 2017, application number of 201710890783.9 and invented name of coaxial cable structure and manufacturing and using methods thereof.
Technical Field
The invention relates to the field of coaxial cables, in particular to a coaxial cable structure and a manufacturing and using method thereof.
Background
The coaxial cable is structurally composed of a conductor wire core, an insulating foaming layer, a metal shielding layer and a sheath from inside to outside in sequence. Because the fish-scale surface of the insulating foaming layer is prevented from influencing the performance of the cable, a coating layer is respectively arranged between the conductor wire core and the insulating foaming layer as well as between the insulating foaming layer and the metal shielding layer. In the production process of the cable, various materials are coated on the conductor wire core by one layer, and finally the coaxial cable is manufactured.
The problem is that, in consideration of the application environment, the service life and the cost of the coaxial cable, the sheath is usually made of a suitable material selected from a plurality of materials such as PE (polyethylene), PVC (polyvinyl chloride), PUR (polyurethane), XLPE (cross-linked polyethylene) and the like. The sheath needs to be in contact with the outside for a long time and needs to be subjected to various influences such as temperature resistance, weather resistance, impact resistance and the like, the thickness of the sheath often occupies more than half of the diameter of the coaxial cable, and the sheath is stripped from the cable and needs to consume more labor hour, manpower and material resources, so that the sheath cannot be immediately coated after the coaxial cable finishes the sheathing operation of the metal shielding layer, but is rolled and stored, and the sheath made of the corresponding material is coated according to the final practical application environment. The problem is that the metal shielding layer is exposed in the air for a long time for storage, and the metal is oxidized and rusted due to oxygen and moisture in the air, so that the quality and the performance of the cable are reduced, and even the cable can only be discarded and destroyed.
Disclosure of Invention
The present invention addresses the above-mentioned problems by providing a coaxial cable structure and methods of making and using the same.
The technical scheme adopted by the invention is as follows: a coaxial cable structure comprises a conductor wire core, an insulating foaming layer and a metal shielding layer from inside to outside in sequence; a first coating layer is arranged between the conductor wire core and the insulating foaming layer, and the first coating layer is made of PE (polyethylene); a second coating layer is arranged between the insulating foaming layer and the metal shielding layer, and the second coating layer is made of PE (polyethylene); the metal shielding layer is wrapped by a sealing layer, the sealing layer is made of ABS (acrylonitrile-butadiene-styrene plastic) plastic, and the thickness of the sealing layer is 15-20 mu m.
After the metal shielding layer is coated, a layer of plastic is coated on the outer side of the metal shielding layer for sealing, so that the metal shielding layer is completely isolated from the air, oxidation and corrosion can not occur even if the metal shielding layer is stored for a long time, and the signal transmission quality of the coaxial cable is ensured. Because ABS weatherability is not good, usually can not select the material as the sheath, but as the interim sealing layer when rolling is deposited, the sealing time compares in life to be very short, and the environment of depositing is mostly factory building warehouse, and its sealed and ageing resistance can satisfy the needs completely.
In one embodiment of the present invention, the thickness of the first cladding layer is between 15 μm and 20 μm.
In an embodiment of the invention, the thickness of the second cladding layer is between 35-40 μm.
The second cladding layer is further from the conductor core than the first cladding layer, and the circumferential surface tension is greater, so that the thickness of the second cladding layer is greater than the thickness of the first cladding layer.
The invention also provides a manufacturing method of the coaxial cable structure, which comprises the following steps:
heating and melting PE in a first coating device and injecting the PE into a coating die on the first coating device; the conductor wire core penetrates through the first coating device at a constant speed, and a first coating layer made of PE is coated on the surface of the conductor wire core;
the conductor wire core passes through the cooling device, and the first coating layer made of the PE material is cooled and solidified;
heating and melting the insulating foamed plastic, pumping bubbles of inert gas into the insulating foamed plastic by an air pump, stirring the mixture by a screw rod, conveying the mixture into an extrusion molding device, heating and melting PE, injecting the PE into a second coating device, enabling the conductor wire core to move at a constant speed to sequentially pass through the extrusion molding device and the second coating device, and coating a foamed insulating layer and a second coating layer on the surface of the conductor wire core;
the conductor wire core passes through the cooling device, and the second coating layer made of the PE material and the foamed insulating layer are cooled and solidified;
the conductor wire core penetrates through the metal shielding layer coating device, and the surface of the conductor wire core is sleeved with a metal shielding layer;
heating and melting ABS and injecting the ABS into a third coating device, wherein the conductor wire core penetrates through the third coating device at a constant speed, and the surface of the conductor wire core is coated with a sealing layer made of ABS;
the conductor wire core passes through the cooling device, and the sealing layer made of the ABS material is cooled and solidified.
After the metal shielding layer is sleeved, the sealing layer is covered on the outer layer in time, so that the metal shielding layer can be protected quickly and effectively. The ABS plastic is coated in a melt coating mode, so that the sealing performance is better, and holes or gaps are not easy to generate.
The invention also provides a using method of the coaxial cable structure, which is characterized by comprising the following steps:
a. removing the ABS sealing layer on the surface of the coaxial cable structure;
b. melting sheath raw materials and injecting the melted sheath raw materials into a sheath coating device, enabling the coaxial cable structure to penetrate through the sheath coating device at a constant speed, and coating a sheath on the surface of the coaxial cable structure;
c. the coaxial cable structure passes through the cooling device, and the sheath wrapped on the surface is cooled and solidified.
The invention also provides a using method of the coaxial cable structure, which is characterized by comprising the following steps:
a. removing the ABS sealing layer on the surface of the coaxial cable structure;
melting the PVC raw material and injecting the melted PVC raw material into a sheath coating device, enabling the coaxial cable structure to penetrate through the sheath coating device at a constant speed, and coating a PVC sheath on the surface of the coaxial cable structure;
c. the coaxial cable structure passes through the cooling device, and the PVC sheath wrapped on the surface is cooled and solidified.
In an embodiment of the invention, in the method for using the coaxial cable structure, the step a includes the following steps:
a1. setting the size of an opening of a scraping device according to the diameter of the cross section of a metal shielding layer in the coaxial cable structure;
a2. heating the surface of the coaxial cable structure to 120-140 ℃, and melting the sealing layer made of the ABS material;
a3. the coaxial cable structure passes through the scraping device opening and the molten ABS sealing layer is scraped.
The scraping device comprises a scraper blade with a middle opening, the diameter of the opening is adjustable, the coaxial cable structure passes through the opening, and the sealing layer part with the size larger than the diameter of the opening is blocked and scraped off, so that the outer diameter of the coaxial cable passing through the opening is not larger than the diameter of the opening.
The melting temperature of ABS plastics is about 110 ℃, the melting temperature of other common sheath materials such as PVC is more than 150 ℃, the surface of the coaxial cable structure is heated to 120-140 ℃, and the ABS plastics can be melted under the condition of hardly influencing other parts of the core layer so as to be scraped and stripped. In the actual production process, the metal shielding layer is usually made of pure copper, and the copper metal shielding layer is easily oxidized and blackened when exposed to the air at the temperature of 120-140 ℃ to influence the performance of the metal shielding layer. Therefore, in the using process, the procedures of removing the ABS sealing layer and the coating sheath can be carried out in an inert gas atmosphere environment, and the metal shielding layer is prevented from being oxidized.
The invention has the beneficial effects that: through at the outer cladding one deck sealing layer of metallic shield, can effectively prolong coaxial cable structure's the latency, promote the flexibility of using, also avoided the emergence of oxidative deterioration even the condition of scrapping simultaneously, practiced thrift material cost.
Description of the drawings:
FIG. 1 is a schematic cross-sectional view of a coaxial cable construction of the present invention;
fig. 2 is a schematic view of the construction of a scraper on a scraping apparatus;
FIG. 3 is a schematic view showing a state of use of the squeegee;
fig. 4 is a flow chart of a method of using the coaxial cable structure of the present invention;
FIG. 5 is a flow chart of a method of use of an embodiment of the present invention.
The figures are numbered:
1. a conductor core; 2. an insulating foam layer; 3. a metal shielding layer; 41. a first cladding layer; 42. a second cladding layer; 5. a sealing layer; 6. a coaxial cable structure; 7. a squeegee; 71. and (4) opening.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a coaxial cable structure according to an embodiment of the present invention includes, from inside to outside, a conductor core 1, an insulating foam layer 2, and a metal shielding layer 3; a first coating layer 41 is arranged between the conductor wire core 1 and the insulation foaming layer 2, and the first coating layer 41 is made of PE; a second coating layer 42 is arranged between the insulating foaming layer 2 and the metal shielding layer 3, and the second coating layer 42 is made of PE; the metal shielding layer 3 is externally wrapped with a sealing layer 5, the sealing layer 5 is made of ABS (acrylonitrile butadiene styrene) plastic, and the thickness of the sealing layer 5 is 15-20 μm.
After the metal shielding layer 3 is coated, a plastic sealing layer 5 is coated on the outer side of the metal shielding layer for sealing, so that the metal shielding layer 3 is completely isolated from the air, oxidation and corrosion can not occur even if the metal shielding layer is stored for a long time, and the signal transmission quality of the coaxial cable is ensured. Because ABS weatherability is not good, usually can not select the material as the sheath, but as the interim sealing layer when rolling is deposited, the sealing time compares in life to be very short, and the environment of depositing is mostly factory building warehouse, and its sealed and ageing resistance can satisfy the needs completely.
As an example, the first cladding 41 is between 15-20 μm thick.
As an example, the second cladding layer 42 is between 35-40 μm thick.
The second cladding layer 42 is more strongly oriented than the first cladding layer 41 towards the conductor core and the circumferential surface tension is greater, so that the thickness of the second cladding layer 42 is greater than the thickness of the first cladding layer 41.
The embodiment of the invention also provides a manufacturing method of the coaxial cable structure, which comprises the following steps:
heating and melting PE in a first coating device and injecting the PE into a coating die on the first coating device; the conductor wire core 1 penetrates through the first coating device at a constant speed, and the surface of the conductor wire core is coated with a first coating layer 41 made of PE material;
the conductor core 1 passes through a cooling device, and the first coating layer 41 made of PE is cooled and solidified;
heating and melting the insulating foamed plastic, pumping bubbles of inert gas into the insulating foamed plastic by an air pump, stirring the mixture by a screw rod, conveying the mixture into an extrusion molding device, heating and melting PE, injecting the PE into a second coating device, enabling the conductor wire core 1 to move at a constant speed to sequentially pass through the extrusion molding device and the second coating device, and coating a foamed insulating layer 2 and a second coating layer 42 on the surface of the conductor wire core;
the conductor wire core 1 passes through a cooling device, and the second coating layer 42 made of PE and the foamed insulating layer 2 are cooled and solidified;
the conductor wire core 1 penetrates through the metal shielding layer coating device, and the surface of the conductor wire core is sleeved with a metal shielding layer 3;
heating and melting ABS and injecting the ABS into a third coating device, wherein the conductor wire core 1 penetrates through the third coating device at a constant speed, and the surface of the conductor wire core is coated with a sealing layer 5 made of ABS;
the conductor wire core 1 penetrates through the cooling device, and the sealing layer 5 made of the ABS material is cooled and solidified.
After the metal shielding layer 3 is sleeved, the sealing layer 5 is covered on the outer layer in time, so that the metal shielding layer 3 can be protected quickly and effectively. The ABS plastic is coated in a melt coating mode, so that the sealing performance is better, and holes or gaps are not easy to generate.
Referring to fig. 4, an embodiment of the present invention further provides a method for using the coaxial cable structure, which includes the following steps:
a. removing the ABS sealing layer on the surface of the coaxial cable structure;
b. melting sheath raw materials and injecting the melted sheath raw materials into a sheath coating device, enabling the coaxial cable structure to penetrate through the sheath coating device at a constant speed, and coating a sheath on the surface of the coaxial cable structure;
c. the coaxial cable structure passes through the cooling device, and the sheath wrapped on the surface is cooled and solidified.
The embodiment of the invention also provides a using method of the coaxial cable structure, which is characterized by comprising the following steps:
a. removing the ABS sealing layer on the surface of the coaxial cable structure;
melting the PVC raw material and injecting the melted PVC raw material into a sheath coating device, enabling the coaxial cable structure to penetrate through the sheath coating device at a constant speed, and coating a PVC sheath on the surface of the coaxial cable structure;
c. the coaxial cable structure passes through the cooling device, and the PVC sheath wrapped on the surface is cooled and solidified.
Referring to fig. 5, as an embodiment, in the method for using the coaxial cable structure 6, the step a includes the following steps:
a1. setting the size of an opening of a scraping device according to the diameter of the cross section of a metal shielding layer in the coaxial cable structure 6;
a2. heating the surface of the coaxial cable structure to 120-140 ℃, and melting the sealing layer made of the ABS material;
a3. the coaxial cable structure passes through the scraping device opening and the molten ABS sealing layer is scraped.
Referring to fig. 3, the scraping device includes a scraper 7 with a central opening 71, the diameter of the opening 71 is adjustable, the coaxial cable structure 6 passes through the opening 71, and an ABS sealing sleeve with a size larger than the diameter of the opening 71 is blocked and scraped off, so that the outer diameter of the coaxial cable structure 6 passing through the opening 71 is not larger than the diameter of the opening 71.
The melting temperature of ABS plastics is about 110 ℃, the melting temperature of other common sheath materials such as PVC is more than 150 ℃, the surface of the coaxial cable structure 6 is heated to 120-140 ℃, and the ABS plastics can be melted under the condition of hardly influencing other parts of the core layer so as to be scraped and stripped. In the actual production process, the metal shielding layer 3 is usually made of pure copper, and the copper metal shielding layer 3 is easily oxidized and blackened when exposed to the air at the temperature of 120-140 ℃, so that the performance of the metal shielding layer 3 is affected. Therefore, in the using process, the procedures of removing the ABS sealing layer and the coating sheath can be carried out in the inert gas atmosphere environment, and the metal shielding layer 3 is prevented from being oxidized.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, which are directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (1)

1. A method of manufacturing a coaxial cable structure, comprising the steps of:
heating and melting PE in a first coating device and injecting the PE into a coating die on the first coating device; the conductor wire core penetrates through the first coating device at a constant speed, and a first coating layer made of PE is coated on the surface of the conductor wire core;
the conductor wire core passes through the cooling device, and the first coating layer made of the PE material is cooled and solidified;
heating and melting the insulating foamed plastic, pumping bubbles of inert gas into the insulating foamed plastic by an air pump, stirring the mixture by a screw rod, conveying the mixture into an extrusion molding device, heating and melting PE, injecting the PE into a second coating device, enabling the conductor wire core to move at a constant speed to sequentially pass through the extrusion molding device and the second coating device, and coating a foamed insulating layer and a second coating layer on the surface of the conductor wire core;
the conductor wire core passes through the cooling device, and the second coating layer made of the PE material and the foamed insulating layer are cooled and solidified;
the conductor wire core penetrates through the metal shielding layer coating device, and the surface of the conductor wire core is sleeved with a metal shielding layer;
heating and melting ABS and injecting the ABS into a third coating device, wherein the conductor wire core penetrates through the third coating device at a constant speed, and the surface of the conductor wire core is coated with a sealing layer made of ABS;
the conductor wire core passes through the cooling device, and the sealing layer made of the ABS material is cooled and solidified.
CN201911201682.1A 2017-09-27 2017-09-27 Method for manufacturing coaxial cable structure Active CN111128451B (en)

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CN201710890783.9A CN107863190B (en) 2017-09-27 2017-09-27 Coaxial cable structure and methods of making and using same
CN201911201682.1A CN111128451B (en) 2017-09-27 2017-09-27 Method for manufacturing coaxial cable structure

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CN101800097A (en) * 2010-04-12 2010-08-11 上海诺进通讯股份有限公司 High-temperature and high-frequency foam fluorine plastic coaxial cable and production method thereof
CN105931761A (en) * 2016-04-28 2016-09-07 杭州富通电线电缆有限公司 Coaxial cable production technology

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