CN114898937B - Composite multi-core cable and preparation method thereof - Google Patents
Composite multi-core cable and preparation method thereof Download PDFInfo
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- CN114898937B CN114898937B CN202210686846.XA CN202210686846A CN114898937B CN 114898937 B CN114898937 B CN 114898937B CN 202210686846 A CN202210686846 A CN 202210686846A CN 114898937 B CN114898937 B CN 114898937B
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- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 51
- 238000005491 wire drawing Methods 0.000 claims description 41
- 239000004020 conductor Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000007747 plating Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000002042 Silver nanowire Substances 0.000 claims description 5
- 125000002723 alicyclic group Chemical group 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229920003180 amino resin Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 5
- 239000010883 coal ash Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000004070 electrodeposition Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000004005 microsphere Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 241000446313 Lamella Species 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000001125 extrusion Methods 0.000 description 12
- 230000002500 effect on skin Effects 0.000 description 6
- 230000005672 electromagnetic field Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009826 distribution 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
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
-
- 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
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0009—Details relating to the conductive cores
-
- 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
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a composite multi-core cable and a preparation method thereof, belonging to the technical field of multi-core cables, wherein the composite multi-core cable comprises a cable wire and a cable interface, the cable interface is arranged at an end point of the cable, the cable wire comprises a main wrapping pipe and a main wire, seven main wires are filled with insulating rubber, the outer sides of the seven main wires are wrapped with anti-interference layers, the main wrapping pipe is fixedly wrapped at the outer sides of the anti-interference layers, the main wire comprises branch wires and auxiliary wrapping pipes, the branch wires are provided with seven, the outer sides of each branch wire are wrapped with shielding films, the auxiliary wrapping pipe is wrapped at the outer sides of the seven branch wires, and the outer sides of the sections of the branch wires are provided with six arc-shaped petals.
Description
Technical Field
The invention relates to the technical field of multi-core cables, in particular to a composite multi-core cable and a preparation method thereof.
Background
The multi-core cable refers to a cable with more than one insulated core. The cable plays an important role in electronic products and electronic systems, is a key link for connecting various functions of the electronic products, and is widely applied to the fields of aerospace, marine battles and the like.
The cable plays an important role in electronic products and electronic systems, is a key link for connecting various functions of the electronic products, is widely applied to the fields of aerospace, marine battles and the like, exists in various different environments, so that the stability of the cable becomes the most important consideration factor for manufacturing and welding the cable, the cable is mainly manufactured by imperfect manufacturing process or poor contact and welding quality in the welding process, the manufacturing and welding quality of the cable are not up to standard, the operation safety of the whole system is threatened, the cable is strictly required to be manufactured according to the requirements in the manufacturing and welding processes, the realization of the system functions is promoted, the manufacturing process and the attention of the multi-core cable are mainly analyzed, and some effective solutions are provided.
When there is an alternating current or an alternating electromagnetic field in the conductor, the current distribution inside the conductor is uneven, the current is concentrated in the "skin" portion of the conductor, that is to say the current is concentrated in a thin layer on the surface of the conductor, the closer to the surface of the conductor, the higher the current density, and in fact the current inside the conductor is smaller. As a result, the resistance of the conductor increases, so does its power loss. This phenomenon is known as the skin effect. When the single-core cable is subjected to alternating current or alternating electromagnetic field, the skin effect is obvious, and the line loss is increased.
In the existing multi-core cable, the conductor part is circular in cross section, and the resistance is smaller than that of a single-core cable, so that the transmission efficiency is higher, but the resistance still exists, the electric energy loss is still not small in long-distance transmission, and the butt joint between the cables is not efficient enough.
Disclosure of Invention
In order to solve the technical problems, the invention provides a composite multi-core cable and a preparation method thereof.
The technical scheme of the invention is as follows: the cable interface is arranged at an end point of the cable, the cable comprises seven main wrapping pipes and seven main wires, insulating rubber is filled between the seven main wires, an anti-interference layer is wrapped on the outer sides of the seven main wires, the main wrapping pipes are fixedly wrapped on the outer sides of the anti-interference layer, each main wire comprises a branch wire and an auxiliary wrapping pipe, the number of the branch wires is seven, shielding films are wrapped on the outer sides of each branch wire, the auxiliary wrapping pipes are wrapped on the outer sides of the seven branch wires, and six arc-shaped petals are arranged on the outer sides of the sections of the branch wires;
the cable connector comprises a connecting ring, a first clamping ring, a second clamping ring and a third clamping ring, seven groups of connecting holes are formed in the connecting ring, each group of connecting holes are provided with seven small holes, connecting buckles are clamped in the small holes, winding posts used for winding branch wires are arranged at two ends of each connecting buckle, two threading holes are formed in the middle of each connecting buckle, rubber rings are arranged on the inner sides of the first clamping ring and the second clamping ring respectively, barbs are arranged on the outer side inner walls of the first clamping ring and the second clamping ring respectively, and the outer walls of the first clamping ring and the second clamping ring are connected with the third clamping ring through threads.
Further, the preparation method of the composite multi-core cable comprises the following steps:
s1, branch line slot pulling:
changing the circular section of the electric wire into a six-petal section through a groove pulling machine, wherein the linear pulling speed of the groove pulling machine is 55m/min; obtaining branch lines;
s2, preparing a main line:
winding a shielding film on the outer sides of the branch lines obtained in the step S1, gathering seven branch lines into a strand, coating talcum powder on the outer sides of the strand, guiding the strand into a secondary wrapping pipe, and heating the outer sides of the strand to shrink the secondary wrapping pipe to obtain a main line;
s3, preparing a multi-core cable:
the seven main lines penetrate through the positioning device and then are straightened to enter the rubber extruder, so that rubber materials are filled between the main lines to form cables, the cables are guided to a water tank to be cooled, the cooled cables are dried, the outer sides of the cables after being dried are wrapped with the anti-interference layers, talcum powder is coated on the outer sides of the cables after being wrapped with the interference layers and then the cables are guided to the rubber extruder, the rubber is wrapped on the outer sides of the anti-interference layers to form main wrapping pipes, and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
and (3) machining the cylindrical material into a connecting ring, a clamping ring I, a clamping ring II and a clamping ring III, wherein the thread depth of the outer walls of the clamping ring I and the clamping ring is changed from deep to shallow from inside to outside, the thread directions of the clamping ring I and the clamping ring II are opposite, rubber rings are adhered to the inner sides of the clamping ring I and the clamping ring II, the thread directions of the two sides of the inner walls of the clamping ring III are opposite, and finally, a cable connector is mounted to the multi-core cable end point obtained in the step (S3) to obtain the composite multi-core cable.
Further, the slot pulling machine comprises a wire pulling wheel, a wire releasing wheel, a wire pulling groove and a base, wherein the wire pulling wheel and the wire releasing wheel are respectively connected to two sides of the base in a rotating mode, a wire pulling motor is connected to the rear end of the wire pulling wheel in a transmission mode, the bottom of the wire pulling motor is fixedly connected with the base, the wire pulling groove is fixedly connected to the middle of the base, arc-shaped flaps are formed in the middle of the wire pulling groove through the wire pulling groove, the skin effect of a conductor is enhanced, the resistance of the conductor is reduced, and electric energy can be efficiently transmitted.
Further, the positioning device comprises a positioning seat and a positioning ring, the positioning ring is fixedly connected above the positioning seat, seven positioning holes are formed in the positioning ring, and the distance between the main lines is fixed through the positioning device, so that the contact between the main lines is avoided.
Further, the shielding film is prepared from carbon fiber, silver nanowire and cellulose according to the mass ratio of 1:5:2, self-assembling and stacking the films under the vacuum and magnetic field orientation conditions, and plating a metal layer on the films by brush plating composite electrodeposition to finally obtain the shielding films, so that electromagnetic interference among branch lines can be effectively shielded.
Further, the anti-interference layer is made of the following components in parts by weight: 45-50 parts of wave-absorbing powder, 15-20 parts of alicyclic epoxy resin, 7-9 parts of etherified amino resin, 5-10 parts of coal ash hollow microspheres, 8-12 parts of ethanol, 0.1-0.5 part of powder and 3-5 parts of alumina micropowder, and can effectively resist the interference of an external electromagnetic field on the cable.
Further, the heating temperature of the secondary wrapping pipe in the step S2 is 90-100 ℃, and the shrinkage of the secondary wrapping pipe is good in the temperature range.
Further, in the step S3, the water cooling temperature of the pool is 5-10 degrees, the cooling time is 1-2min, the cooling speed is high, and the cooling efficiency is high.
Further, the cooling mode of the main wrapping pipe at the outer side of the cable adopts air cooling, the air cooling temperature is 3-5 ℃, natural cooling is carried out after the air cooling is carried out until the temperature of the main wrapping pipe is less than or equal to 50 ℃, and the cooling mode is more energy-saving and has high cooling efficiency.
Further, the extrusion speed of the rubber extruder is 4-6m/min, and under the extrusion speed, the extruded material is uniform and is molded after extrusion.
The beneficial effects of the invention are as follows:
(1) Compared with the multi-core cable in the market, the cable branch section of the invention has six arc-shaped lobes, and compared with the circular section conductor with the same specification, the cable branch section has the advantages of lower consumable, smaller resistance, larger passing current and higher transmission efficiency.
(2) The composite multi-core cable is easier to butt joint through the cable interface, compared with a commercial interface device, the cable interface has smaller resistance, the electromagnetic interference between the cable branch lines is lower, and the capability of the cable for resisting external electromagnetic interference is stronger.
Drawings
Fig. 1 is a cross-sectional view of a cable of the present invention.
Fig. 2 is a cross-sectional view of the main line of the present invention.
Fig. 3 is a schematic view of the cable interface of the present invention.
Fig. 4 is a cross-sectional view of the connecting ring of the present invention.
FIG. 5 is a schematic illustration of the connection of the connector link to the connector ring of the present invention.
Fig. 6 is a schematic structural view of the slot machine of the present invention.
Fig. 7 is a perspective view of a wire-drawing slot of the present invention.
Fig. 8 is a schematic structural view of the positioning device of the present invention.
The cable comprises a 1-cable wire, a 2-cable interface, a 11-main wrapping tube, a 12-shielding film, a 13-main wire, a 14-anti-interference layer, 131-insulating rubber, 132-branch wires, 133-auxiliary wrapping tubes, 134-arc-shaped flaps, 21-connecting rings, 22-clamping rings I, 23-clamping rings II, 24-clamping rings III, 25-connecting holes, 251 small holes, 26-connecting buckles, 261-threading holes, 27-rubber rings, 28-barbs, 29-winding posts, 31-wire pulling wheels, 32-wire pulling wheels, 33-wire pulling grooves, 34-bases, 35-wire pulling motors, 41-positioning seats, 42-positioning rings and 43-positioning holes.
Detailed Description
Example 1:
as shown in fig. 1-2, a composite multi-core cable comprises a cable 1 and a cable interface 2, wherein the cable interface 2 is arranged at an end point of the cable, the cable 1 comprises a main wrapping pipe 11 and seven main wires 13, insulating rubber 131 is filled between the seven main wires 13, an anti-interference layer 14 is wrapped on the outer sides of the seven main wires 13, the main wrapping pipe 11 is fixedly wrapped on the outer sides of the anti-interference layer 14, the main wires 13 comprise branch wires 132 and auxiliary wrapping pipes 133, the branch wires 132 are seven, shielding films 12 are wrapped on the outer sides of each branch wire 132, the auxiliary wrapping pipes 133 are wrapped on the outer sides of the seven branch wires 132, and six arc-shaped petals 134 are arranged on the outer sides of the sections of the branch wires 132;
as shown in fig. 3-5, the cable connector 2 includes a connecting ring 21, a first clamping ring 22, a second clamping ring 23, and a third clamping ring 24, seven groups of connecting holes 25 are provided in the connecting ring 21, each group of connecting holes 25 has seven small holes 251, a connecting buckle 26 is clamped in the small holes 251, winding posts 29 for winding branch wires 132 are provided at two ends of the connecting buckle 26, two threading holes 261 are provided in the middle of the connecting buckle 26, rubber rings 27 are provided at inner sides of the first clamping ring 22 and the second clamping ring 23, barbs 28 are provided at outer side inner walls of the first clamping ring 22 and the second clamping ring 23, and the first clamping ring 22 and an inner side outer wall of the second clamping ring 23 are connected with the third clamping ring 24 through threads.
Example 2
The embodiment describes a preparation method of a composite multi-core cable, which comprises the following steps:
s1, pulling grooves on branch lines 132:
changing the circular section of the electric wire into a six-petal section through a groove pulling machine, wherein the linear pulling speed of the groove pulling machine is 50m/min; obtaining a branch line 132;
s2, preparing a main line 13:
winding the shielding film 12 on the outer sides of the branch wires 132 obtained in the step S1, gathering seven branch wires 132 into a strand, coating talcum powder on the outer sides of the strand, guiding the strand into a secondary wrapping tube 133, and heating the outer sides of the strand to shrink the secondary wrapping tube 133 to obtain a main wire 13;
s3, preparing a multi-core cable:
the seven main wires 13 penetrate through the positioning device and then are straightened to enter the rubber extruder, so that rubber materials are filled between the main wires 13 to form cables, the cables are guided to a water tank to be cooled, the cooled cables are dried, the outer sides of the cables after being dried are wrapped with the anti-interference layer 14, talcum powder is coated on the outer sides of the cables after being wrapped with the interference layer and then are guided to the rubber extruder, the rubber is wrapped on the outer sides of the anti-interference layer 14 to form a main wrapping pipe 11, and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
and machining cylindrical materials into a connecting ring 21, a clamping ring I22, a clamping ring II 23 and a clamping ring III 24, wherein the thread depth of the outer walls of the clamping ring I22 and the clamping ring II 23 is changed from deep to shallow from inside to outside, the thread directions of the clamping ring I22 and the clamping ring II 23 are opposite, rubber rings are bonded on the inner sides of the clamping ring I22 and the clamping ring II 23, the thread directions of the two sides of the inner wall of the clamping ring III 24 are opposite, and finally the cable connector 2 is mounted on the multi-core cable end point obtained in the step S3, so that the composite multi-core cable is obtained.
As shown in fig. 6-7, the slot drawing machine comprises a wire drawing wheel 31, a wire drawing wheel 32, a wire drawing groove 33 and a base 34, wherein the wire drawing wheel 31 and the wire drawing wheel 32 are respectively connected to two sides of the base 34 in a rotating way, the rear end of the wire drawing wheel 31 is in transmission connection with a wire drawing motor 35, the bottom of the wire drawing motor 35 is fixedly connected with the base 34, the wire drawing groove 33 is fixedly connected to the middle of the base 34, an arc-shaped flap 134 is formed through the wire drawing groove 33, the skin effect of a conductor is enhanced, the resistance of the conductor is reduced, and electric energy can be efficiently transmitted.
As shown in fig. 8, the positioning device comprises a positioning seat 41 and a positioning ring 42, wherein the positioning ring 42 is fixedly connected above the positioning seat 41, seven positioning holes 43 are formed in the positioning ring 42, and the space between the main wires 13 is fixed through the positioning device, so that the contact between the main wires 13 is avoided.
The shielding film 12 is prepared from carbon fiber, silver nanowires and cellulose according to the mass ratio of 1:5:2, self-assembling and stacking to form a film under the vacuum and magnetic field orientation conditions, and then plating a metal layer on the film by brush plating composite electrodeposition to finally obtain the shielding film 12, so that electromagnetic interference between branch lines 132 can be effectively shielded.
The material of the anti-interference layer 14 comprises the following components in parts by weight: 45 parts of wave-absorbing powder, 15 parts of alicyclic epoxy resin, 7 parts of etherified amino resin, 5 parts of coal ash hollow microspheres, 8 parts of ethanol, 0.1 part of powder and 3 parts of alumina micro powder, and can effectively resist the interference of an external electromagnetic field on a cable.
In step S2, the heating temperature of the secondary wrapping tube 133 is 90 ℃, and the shrinkage of the secondary wrapping tube 133 is good in this temperature range.
In the step S3, the water cooling temperature of the water pool is 5 ℃, the cooling time is 1min, and the cooling speed and the cooling efficiency are high.
The cooling mode of the main wrapping pipe 11 at the outer side of the cable adopts air cooling, the air cooling temperature is 3 ℃, natural cooling is carried out after the air cooling is carried out until the temperature of the main wrapping pipe 11 is 50 ℃, and the cooling mode is more energy-saving and has high cooling efficiency.
The extrusion speed of the rubber extruder is 4m/min, and at the extrusion speed, the extruded material is uniform and molded after extrusion.
Example 3:
the embodiment describes a preparation method of a composite multi-core cable, which comprises the following steps:
s1, pulling grooves on branch lines 132:
changing the circular section of the electric wire into a six-petal section through a groove pulling machine, wherein the linear pulling speed of the groove pulling machine is 50-60m/min; obtaining a branch line 132;
s2, preparing a main line 13:
winding the shielding film 12 on the outer sides of the branch wires 132 obtained in the step S1, gathering seven branch wires 132 into a strand, coating talcum powder on the outer sides of the strand, guiding the strand into a secondary wrapping tube 133, and heating the outer sides of the strand to shrink the secondary wrapping tube 133 to obtain a main wire 13;
s3, preparing a multi-core cable:
the seven main wires 13 penetrate through the positioning device and then are straightened to enter the rubber extruder, so that rubber materials are filled between the main wires 13 to form cables, the cables are guided to a water tank to be cooled, the cooled cables are dried, the outer sides of the cables after being dried are wrapped with the anti-interference layer 14, talcum powder is coated on the outer sides of the cables after being wrapped with the interference layer and then are guided to the rubber extruder, the rubber is wrapped on the outer sides of the anti-interference layer 14 to form a main wrapping pipe 11, and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
and machining cylindrical materials into a connecting ring 21, a clamping ring I22, a clamping ring II 23 and a clamping ring III 24, wherein the thread depth of the outer walls of the clamping ring I22 and the clamping ring II 23 is changed from deep to shallow from inside to outside, the thread directions of the clamping ring I22 and the clamping ring II 23 are opposite, rubber rings are bonded on the inner sides of the clamping ring I22 and the clamping ring II 23, the thread directions of the two sides of the inner wall of the clamping ring III 24 are opposite, and finally the cable connector 2 is mounted on the multi-core cable end point obtained in the step S3, so that the composite multi-core cable is obtained.
As shown in fig. 6-7, the slot drawing machine comprises a wire drawing wheel 31, a wire drawing wheel 32, a wire drawing groove 33 and a base 34, wherein the wire drawing wheel 31 and the wire drawing wheel 32 are respectively connected to two sides of the base 34 in a rotating way, the rear end of the wire drawing wheel 31 is in transmission connection with a wire drawing motor 35, the bottom of the wire drawing motor 35 is fixedly connected with the base 34, the wire drawing groove 33 is fixedly connected to the middle of the base 34, an arc-shaped flap 134 is formed through the wire drawing groove 33, the skin effect of a conductor is enhanced, the resistance of the conductor is reduced, and electric energy can be efficiently transmitted.
As shown in fig. 8, the positioning device comprises a positioning seat 41 and a positioning ring 42, wherein the positioning ring 42 is fixedly connected above the positioning seat 41, seven positioning holes 43 are formed in the positioning ring 42, and the space between the main wires 13 is fixed through the positioning device, so that the contact between the main wires 13 is avoided.
The shielding film 12 is prepared from carbon fiber, silver nanowires and cellulose according to the mass ratio of 1:5:2, self-assembling and stacking to form a film under the vacuum and magnetic field orientation conditions, and then plating a metal layer on the film by brush plating composite electrodeposition to finally obtain the shielding film 12, so that electromagnetic interference between branch lines 132 can be effectively shielded.
The material of the anti-interference layer 14 comprises the following components in parts by weight: 48 parts of wave-absorbing powder, 18 parts of alicyclic epoxy resin, 8 parts of etherified amino resin, 7 parts of coal ash hollow microspheres, 10 parts of ethanol, 0.3 part of powder and 4 parts of alumina micro powder, and can effectively resist the interference of an external electromagnetic field on a cable.
In step S2, the heating temperature of the secondary wrapping tube 133 is 95 ℃, and the shrinkage of the secondary wrapping tube 133 is good in this temperature range.
In the step S3, the water cooling temperature of the water pool is 8 ℃, the cooling time is 1.5min, and the cooling speed and the cooling efficiency are high.
The cooling mode of the main wrapping pipe 11 at the outer side of the cable adopts air cooling, the air cooling temperature is 4 ℃, natural cooling is carried out after the air cooling is carried out to the temperature of 40 ℃ of the main wrapping pipe 11, and the cooling mode is more energy-saving and has high cooling efficiency.
The extrusion speed of the rubber extruder is 5m/min, and under the extrusion speed, the extruded material is uniform and is molded after extrusion.
Example 4:
the embodiment describes a preparation method of a composite multi-core cable, which comprises the following steps:
s1, pulling grooves on branch lines 132:
changing the circular section of the electric wire into a six-petal section through a groove pulling machine, wherein the linear pulling speed of the groove pulling machine is 50-60m/min; obtaining a branch line 132;
s2, preparing a main line 13:
winding the shielding film 12 on the outer sides of the branch wires 132 obtained in the step S1, gathering seven branch wires 132 into a strand, coating talcum powder on the outer sides of the strand, guiding the strand into a secondary wrapping tube 133, and heating the outer sides of the strand to shrink the secondary wrapping tube 133 to obtain a main wire 13;
s3, preparing a multi-core cable:
the seven main wires 13 penetrate through the positioning device and then are straightened to enter the rubber extruder, so that rubber materials are filled between the main wires 13 to form cables, the cables are guided to a water tank to be cooled, the cooled cables are dried, the outer sides of the cables after being dried are wrapped with the anti-interference layer 14, talcum powder is coated on the outer sides of the cables after being wrapped with the interference layer and then are guided to the rubber extruder, the rubber is wrapped on the outer sides of the anti-interference layer 14 to form a main wrapping pipe 11, and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
and machining cylindrical materials into a connecting ring 21, a clamping ring I22, a clamping ring II 23 and a clamping ring III 24, wherein the thread depth of the outer walls of the clamping ring I22 and the clamping ring II 23 is changed from deep to shallow from inside to outside, the thread directions of the clamping ring I22 and the clamping ring II 23 are opposite, rubber rings are bonded on the inner sides of the clamping ring I22 and the clamping ring II 23, the thread directions of the two sides of the inner wall of the clamping ring III 24 are opposite, and finally the cable connector 2 is mounted on the multi-core cable end point obtained in the step S3, so that the composite multi-core cable is obtained.
As shown in fig. 6-7, the slot drawing machine comprises a wire drawing wheel 31, a wire drawing wheel 32, a wire drawing groove 33 and a base 34, wherein the wire drawing wheel 31 and the wire drawing wheel 32 are respectively connected to two sides of the base 34 in a rotating way, the rear end of the wire drawing wheel 31 is in transmission connection with a wire drawing motor 35, the bottom of the wire drawing motor 35 is fixedly connected with the base 34, the wire drawing groove 33 is fixedly connected to the middle of the base 34, an arc-shaped flap 134 is formed through the wire drawing groove 33, the skin effect of a conductor is enhanced, the resistance of the conductor is reduced, and electric energy can be efficiently transmitted.
As shown in fig. 8, the positioning device comprises a positioning seat 41 and a positioning ring 42, wherein the positioning ring 42 is fixedly connected above the positioning seat 41, seven positioning holes 43 are formed in the positioning ring 42, and the space between the main wires 13 is fixed through the positioning device, so that the contact between the main wires 13 is avoided.
The shielding film 12 is prepared from carbon fiber, silver nanowires and cellulose according to the mass ratio of 1:5:2, self-assembling and stacking to form a film under the vacuum and magnetic field orientation conditions, and then plating a metal layer on the film by brush plating composite electrodeposition to finally obtain the shielding film 12, so that electromagnetic interference between branch lines 132 can be effectively shielded.
The material of the anti-interference layer 14 comprises the following components in parts by weight: 50 parts of wave-absorbing powder, 20 parts of alicyclic epoxy resin, 9 parts of etherified amino resin, 10 parts of coal ash hollow microspheres, 12 parts of ethanol, 0.5 part of powder and 5 parts of alumina micro powder, and can effectively resist the interference of an external electromagnetic field on a cable.
In step S2, the heating temperature of the secondary wrapping tube 133 is 100 ℃, and the shrinkage of the secondary wrapping tube 133 is good in this temperature range.
In the step S3, the water cooling temperature of the water pool is 10 ℃, the cooling time is 2min, and the cooling speed and the cooling efficiency are high.
The cooling mode of the main wrapping pipe 11 at the outer side of the cable adopts air cooling, the air cooling temperature is 5 ℃, natural cooling is carried out after the air cooling is carried out until the temperature of the main wrapping pipe 11 is 30 ℃, and the cooling mode is more energy-saving and has high cooling efficiency.
The extrusion speed of the rubber extruder is 6m/min, and at the extrusion speed, the extruded material is uniform and molded after extrusion.
In the cables produced in the comparative examples 2 to 4 and in the example 4, the electromagnetic interference capability is best, the electric energy transmission efficiency is higher, and the production efficiency is highest, so that the example 4 is the best example.
Claims (4)
1. The utility model provides a compound multicore cable, its characterized in that includes cable conductor (1), cable interface (2) are established the extreme point of cable, cable conductor (1) is including main parcel pipe (11), main line (13) have seven, are filled with insulating rubber (131) between seven main lines (13), and the outside parcel of seven main lines (13) has anti-interference layer (14), main parcel pipe (11) is fixed to be wrapped in the outside of anti-interference layer (14), main line (13) include branch line (132), vice parcel pipe (133), branch line (132) have seven, and every branch line (132) outside all is wrapped up and is had shielding film (12), vice parcel pipe (133) parcel is in the outside of seven branch lines (132), the cross-section outside of branch line (132) is equipped with six arc lamella (134);
the cable connector (2) comprises a connecting ring (21), a first clamping ring (22), a second clamping ring (23) and a third clamping ring (24), seven groups of connecting holes (25) are formed in the connecting ring (21), each group of connecting holes (25) is provided with seven small holes (251), connecting buckles (26) are clamped in the small holes (251), winding columns (29) used for winding branch wires (132) are arranged at two ends of each connecting buckle (26), two threading holes (261) are formed in the middle of each connecting buckle (26), rubber rings (27) are respectively arranged on the inner sides of the first clamping ring (22) and the second clamping ring (23), barbs (28) are arranged on the outer side inner walls of the first clamping ring (22) and the second clamping ring (23), and the inner side outer walls of the first clamping ring (22) and the second clamping ring (23) are connected with the third clamping ring (24) through threads;
the preparation method of the composite multi-core cable comprises the following steps:
s1, pulling grooves of branch lines (132):
changing the circular section of the electric wire into a six-petal section through a groove pulling machine, wherein the linear pulling speed of the groove pulling machine is 60m/min; obtaining a branch line (132);
s2, preparing a main line (13):
winding a shielding film (12) on the outer sides of the branch wires (132) obtained in the step S1, gathering seven branch wires (132) into a strand, coating talcum powder on the outer sides of the strand, guiding the strand into a secondary wrapping tube (133), and heating the outer sides of the strand to shrink the secondary wrapping tube (133) to obtain a main wire (13);
s3, preparing a multi-core cable:
the seven main wires (13) penetrate through the positioning device and then are straightened to enter the rubber extruder, so that rubber materials are filled between the main wires (13) to form cables, the cables are guided to a water tank to be cooled, the cooled cables are dried, the outer sides of the dried cables are wrapped with an anti-interference layer (14), talcum powder is coated on the outer sides of the cables wrapped with the interference layer and then guided to the rubber extruder, the rubber is wrapped on the outer sides of the anti-interference layer (14) to form a main wrapping pipe (11), and the cables are cooled to obtain the multi-core cable;
s4, processing a cable interface:
machining cylindrical materials into a connecting ring (21), a clamping ring I (22), a clamping ring II (23) and a clamping ring III (24), wherein the thread depth of the outer walls of the clamping ring I (22) and the clamping ring II (23) is changed from deep to shallow from inside to outside, the thread directions of the clamping ring I (22) and the clamping ring II (23) are opposite, rubber rings are adhered to the inner sides of the clamping ring I (22) and the clamping ring II (23), the thread directions of the two sides of the inner wall of the clamping ring III (24) are opposite, and finally the cable connector (2) is mounted to the multi-core cable end point obtained in the step S3, so that a composite multi-core cable is obtained;
the wire drawing machine comprises a wire drawing wheel (31), a wire drawing wheel (32), a wire drawing groove (33) and a base (34), wherein the wire drawing wheel (31) and the wire drawing wheel (32) are respectively connected to two sides of the base (34) in a rotating mode, a wire drawing motor (35) is connected to the rear end of the wire drawing wheel (31) in a transmission mode, the bottom of the wire drawing motor (35) is fixedly connected with the base (34), and the wire drawing groove (33) is fixedly connected to the middle of the base (34);
the positioning device comprises a positioning seat (41) and a positioning ring (42), wherein the positioning ring (42) is fixedly connected above the positioning seat (41), and seven positioning holes (43) are formed in the positioning ring (42);
the shielding film (12) is prepared from carbon fiber, silver nanowires and cellulose according to the mass ratio of 1:5:2, self-assembling and stacking the films under the vacuum and magnetic field orientation conditions, and plating a metal layer on the films through brush plating composite electrodeposition to finally obtain shielding films (12);
the anti-interference layer (14) is made of the following components in parts by weight: 45-50 parts of wave-absorbing powder, 15-20 parts of alicyclic epoxy resin, 7-9 parts of etherified amino resin, 5-10 parts of coal ash hollow microspheres, 8-12 parts of ethanol, 0.1-0.5 part of powder and 3-5 parts of alumina micropowder.
2. A method for manufacturing a composite multi-core cable according to claim 1, wherein the heating temperature of the secondary wrapping tube (133) in the step S2 is 90-100 ℃.
3. The method for manufacturing a composite multi-core cable according to claim 1, wherein in the step S3, the water cooling temperature of the pool is 5-10 degrees, and the cooling time period is 1-2min.
4. The preparation method of the composite multi-core cable according to claim 1, wherein the cooling mode of the main wrapping pipe (11) at the outer side of the cable is air cooling, the air cooling temperature is 3-5 ℃, and natural cooling is carried out after the air cooling is carried out until the temperature of the main wrapping pipe (11) is less than or equal to 50 ℃.
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| CN114898937A (en) | 2022-08-12 |
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