CN114613553A - Method for producing insulated cable - Google Patents

Method for producing insulated cable Download PDF

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Publication number
CN114613553A
CN114613553A CN202210276470.5A CN202210276470A CN114613553A CN 114613553 A CN114613553 A CN 114613553A CN 202210276470 A CN202210276470 A CN 202210276470A CN 114613553 A CN114613553 A CN 114613553A
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CN
China
Prior art keywords
cable
cooling
die hole
extrusion die
guide sleeve
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Granted
Application number
CN202210276470.5A
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Chinese (zh)
Other versions
CN114613553B (en
Inventor
曹茂龙
刘多全
汪丹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Aike Cable Co ltd
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Hubei Aike Cable Co ltd
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Priority to CN202210276470.5A priority Critical patent/CN114613553B/en
Publication of CN114613553A publication Critical patent/CN114613553A/en
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Publication of CN114613553B publication Critical patent/CN114613553B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—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
    • H01B13/0036—Details
    • 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
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
    • 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
    • H01B7/0208—Cables with several layers of insulating material
    • 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
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1875—Multi-layer sheaths
    • 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
    • H01B7/2806—Protection against damage caused by corrosion

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention provides a production method of an insulated cable, and belongs to the technical field of cables. The production steps are as follows: uniformly mixing 89-97% by mass of an injection molding outer coating material, 2-8% by mass of mica sheets and 1-3% by mass of a binder, heating until the injection molding outer coating material is molten, and injecting the molten viscous fluid into a feeding hopper above a rotary drum from the feeding hopper; and controlling the rotating cylinder to rotate at a constant speed, controlling the cable core to feed in the core guide sleeve at a constant speed, cooling and molding the viscous fluid outside the cable core corresponding to the cooling box to form a cable or a wire coated with an insulating sleeve, and finishing the winding of the cable or the wire by the winding wheel. The produced cable has good insulating property and mechanical property.

Description

Method for producing insulated cable
Technical Field
The invention belongs to the technical field of cables, and relates to a production method of an insulated cable.
Background
The insulating sleeve outside the conductive core of the cable is generally formed by extrusion coating, as disclosed in the prior art of CN202010791915.4, and then a mica tape or other insulating tape is coated outside the sleeve to provide the cable with certain insulating properties, which requires two processes, i.e., extrusion coating and wrapping.
The mechanical properties of the cable include tensile strength, bending strength, extrusion strength and the like, and the cable outer coating sleeve formed by using polyethylene, polyvinyl chloride and the like as main materials is relatively weak in the aspect of the above mentioned mechanical properties, so that a coating layer for improving the mechanical properties of the cable outer coating sleeve by using armor and the like is required to be coated to strengthen the mechanical properties of the cable outer coating sleeve, so that the production process of the cable is complicated, and the production cost is high. Based on this, the applicant has proposed a new cable processing method which can simplify the process and improve the performance.
Disclosure of Invention
The invention aims to provide a method for producing an insulated cable, aiming at solving the problems of the prior art, and the technical problem to be solved is to improve the insulation performance and the mechanical performance of the cable.
The purpose of the invention can be realized by the following technical scheme: a method for producing an insulated cable, characterized in that the method relies on an insulated cable production facility comprising a frame, an extruder housing, a core guiding sleeve and a chill box;
the extruder shell is fixed on the frame, a rotary cylinder is rotationally connected in the extruder shell, a hollow channel is arranged in the rotary cylinder, the hollow channel sequentially comprises a hot melting cavity and a centrifugal cavity from top to bottom, the core guide sleeve is inserted in the hollow channel, and an extrusion screw rod is arranged outside the core guide sleeve positioned in the hot melting cavity;
the middle part of the cold setting box is provided with an extrusion die hole communicated with the lower end of the hollow channel, and the outer side of the extrusion die hole is provided with a cooling cavity positioned on the cold setting box;
the core guide sleeve is fixedly connected with the rack, and the top of the rotary drum is provided with a feeding hopper; the stand is rotatably connected with a paying-off wheel positioned above the core guide sleeve; the frame is rotatably connected with a winding wheel positioned below the cold curing box;
the production steps are as follows: uniformly mixing 89-97% by mass of an injection molding outer coating material, 2-8% by mass of mica sheets and 1-3% by mass of a binder, heating until the injection molding outer coating material is molten, and injecting the molten viscous fluid into a feeding hopper above a rotary drum from the feeding hopper; and controlling the rotating cylinder to rotate at a constant speed, controlling the cable core to feed in the core guide sleeve at a constant speed, cooling and molding the viscous fluid outside the cable core corresponding to the cooling box to form a cable or a wire coated with an insulating sleeve, and finishing the winding of the cable or the wire by the winding wheel.
Furthermore, the hot melting cavity is in a cone cylinder shape, and a heater positioned on the outer side of the hot melting cavity is arranged between the rotary cylinder and the extruder shell.
Furthermore, the cooling box is provided with an air inlet connecting pipe positioned at the lower end of the cooling cavity and an air outlet connecting pipe positioned at the upper end of the cooling cavity, and the cooling cavity is internally provided with a spiral air guide sheet.
Furthermore, a pressure limiting valve is arranged in the air outlet connecting pipe, a plurality of small exhaust holes communicated with the cooling cavity and the extrusion die hole are formed in the cold-setting box, the small exhaust holes are circumferentially and uniformly distributed on the outer side of the extrusion die hole, and the small exhaust holes are located in the middle of the cooling cavity.
The spiral air guide sheet can prolong the cooling path, cold air flow is sent out from bottom to top, the temperature of the position close to the tail end of the extrusion die hole can be ensured to be lower, the solidification of the rubber sleeve is facilitated, in addition, the pressure limiting valve is arranged at the air outlet connecting pipe, the cooling cavity is in a high-pressure state, the air pressure in the cooling cavity is controlled to be between 1.5 and 3 atmospheric pressures, and partial air can enter the extrusion die hole through the small exhaust holes, because the extrusion die hole is positioned in the middle of the cooling cavity, the gap between the rubber sleeve and the inner wall of the extrusion die hole is larger as the rubber sleeve is closer to the tail end of the extrusion die hole, the air entering the extrusion die hole from the small exhaust holes can only run downwards and is discharged from the tail end of the extrusion die hole, the arrangement not only can effectively take out diluent in the binder, the solidification forming of the rubber sleeve is facilitated, but also can apply external pressure to the rubber sleeve outside the uncured rubber sleeve, and the external pressure is relatively uniformly applied to the outer side of the rubber sleeve, has positive effects on maintaining the shape of the rubber sleeve and increasing the adhesive strength with the cable core.
Furthermore, a pressure limiting valve is arranged in the air outlet connecting pipe, an annular notch penetrating through the cooling cavity and the extrusion die hole is formed in the cold-setting box, and the annular notch is located in the middle of the cooling cavity.
The purpose of the annular gap is the same as the purpose of the vent holes, but the annular gap allows the pressure of the air pressure on the rubber sleeve to be more uniform in comparison.
Furthermore, the top of a rotating cylinder is provided with a bevel gear ring I, the insulated cable production equipment further comprises a motor, and a bevel gear ring II meshed with the bevel gear ring I is arranged on an output shaft of the motor.
Mix extrusion molding material and mica sheet, drop into from going into the hopper, after the heating of heating chamber department and the extrusion of extruding the screw rod, hot melt mixture gets into the centrifugal chamber, and in the centrifugal chamber, hot melt mixture receives centrifugal force effect, and the mica sheet is the state distribution that the plane passes through the footpath line, and the mixture gets into in the extrusion die hole to the cladding is at the in-process outside the cable core, still has the mica sheet of great proportion to be the state that the plane passes through the footpath line, makes the cable that obtains possess better mechanical properties and insulating properties.
Traditional cable strengthens its insulating properties through the mode around the package mica tape outside thermoplastic layer, and in this scheme, because the perpendicular mica sheet surface of footpath line of cable, form multilayer mica sheet insulating layer in the cable covering, these mica sheets mix with the colloid material, can increase substantially the insulating properties of cable, in addition, because the existence of mica sheet, especially its specific distribution state, make the cable optimize on anti buckling performance by a wide margin, the tensile of cable, anti extrusion, ageing resistance, corrosion resistance all have the promotion of certain degree.
Further, the injection molding outer coating material is one or a mixture of polyethylene, PA6 and polyvinyl chloride.
The injection molding outer covering material can also be other materials with thermoplastic cold setting characteristics as consideration of different performance requirements of the cable.
Further, the thickness of the mica sheet is 30-1000 μm, the length-width ratio of the mica sheet is less than 2, and the ratio of the length to the thickness of the mica sheet is more than 50.
And (3) obtaining mica sheets with corresponding sizes by adopting high-pressure water separation, selecting the corresponding mica sheets according to the requirements of the diameter of the cable and the thickness of a coating layer, and comprehensively considering the requirements of the insulating property and the mechanical property of the cable.
Drawings
FIG. 1 is a schematic view showing the structure of the insulated cable manufacturing apparatus according to the first embodiment.
FIG. 2 is a schematic view showing the structure of the insulated cable manufacturing apparatus according to the second embodiment.
Fig. 3 is an enlarged view of a portion a in fig. 1.
Fig. 4 is an enlarged view of a portion B of fig. 1.
Fig. 5 is an enlarged view of a portion C in fig. 2.
Fig. 6 is a cross-sectional view of the cable after extrusion (stranded conductor core).
Fig. 7 is a cross-sectional view of the electric wire after extrusion molding.
In the figure, 1, an extruder housing; 2. a core guide sleeve; 3. a cold setting tank; 4. a rotary drum; 5. a hot melt chamber; 6. a centrifugal chamber; 7. extruding a screw; 8. extruding a die hole; 9. a cooling chamber; 10. feeding into a hopper; 11. an air inlet connecting pipe; 12. an air outlet connecting pipe; 13. a gas guiding sheet; 14. an exhaust aperture; 15. an annular gap; 16. a paying-off wheel; 17. a winding wheel; a. a rubber sleeve; b. a cable core; c. mica sheet.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
Fig. 1, 3 and 4 show an insulated cable production apparatus, which is characterized by comprising a frame, an extruder housing 1, a core guide sleeve 2 and a chill box 3; the extruder shell 1 is fixed on a frame, a rotary drum 4 is rotatably connected in the extruder shell 1, a hollow channel is arranged in the rotary drum 4, the hollow channel sequentially comprises a hot melting cavity 5 and a centrifugal cavity 6 from top to bottom, the core guide sleeve 2 is inserted in the hollow channel, and an extrusion screw 7 is arranged outside the core guide sleeve 2 positioned in the hot melting cavity 5; the middle part of the cold-setting box 3 is provided with an extrusion die hole 8 communicated with the lower end of the hollow channel, and the outer side of the extrusion die hole 8 is provided with a cooling cavity 9 positioned on the cold-setting box 3; the core guiding sleeve 2 is fixedly connected with the frame, and the top of the rotary drum 4 is provided with a feeding hopper 10.
The hot melting cavity 5 is in a cone cylinder shape, and a heater positioned on the outer side of the hot melting cavity 5 is arranged between the rotary cylinder 4 and the extruder shell 1.
The cooling box 3 is provided with an air inlet connecting pipe 11 positioned at the lower end of the cooling cavity 9 and an air outlet connecting pipe 12 positioned at the upper end of the cooling cavity 9, and the cooling cavity 9 is internally provided with a spiral air guide sheet 13.
A pressure limiting valve is arranged in the air outlet connecting pipe 12, a plurality of small exhaust holes 14 communicated with the cooling cavity 9 and the extrusion die hole 8 are formed in the cold-setting box 3, the small exhaust holes 14 are circumferentially and uniformly distributed on the outer side of the extrusion die hole 8, and the small exhaust holes 14 are located in the middle of the cooling cavity 9.
The spiral air guide plate 13 can prolong the cooling path, cold air flow is sent out from bottom to top, the temperature of the position close to the tail end of the extrusion die hole 8 can be ensured to be lower, the solidification of the rubber sleeve a is facilitated, in addition, the pressure limiting valve is arranged at the air outlet connecting pipe 12, the cooling cavity 9 is in a high-pressure state, the air pressure in the cooling cavity 9 is controlled to be between 1.5 and 3 atmospheric pressures, and partial air can enter the extrusion die hole 8 through the small exhaust holes 14, because the extrusion die hole 8 is positioned in the middle of the cooling cavity 9, the gap between the rubber sleeve a and the inner wall of the extrusion die hole 8 is larger as the rubber sleeve a is closer to the tail end of the extrusion die hole 8, the air entering the extrusion die hole 8 from the small exhaust holes 14 can only run downwards and is discharged from the tail end of the extrusion die hole 8, the arrangement not only can effectively take out diluent in the binder, the solidification forming of the rubber sleeve a is facilitated, but also can apply external pressure to the rubber sleeve a outside the uncured rubber sleeve a, the external pressure acts on the outer side of the rubber sleeve a relatively uniformly, and has positive effects on maintaining the shape of the rubber sleeve a and increasing the adhesion strength of the rubber sleeve a and the cable core b.
The top of the rotating cylinder 4 is provided with a bevel gear ring I, the insulated cable production equipment further comprises a motor, and a bevel gear ring II meshed with the bevel gear ring I is arranged on an output shaft of the motor.
The stand is rotatably connected with a paying-off wheel 16 positioned above the core guide sleeve 2.
The frame is rotatably connected with a winding wheel 17 positioned below the cold-setting box 3.
Mix extrusion molding material and mica sheet c, drop into from going into hopper 10, after the heating of heating chamber department and the extrusion of extrusion screw 7, hot melt mixture gets into centrifugal chamber 6, in centrifugal chamber 6, hot melt mixture receives centrifugal force effect, and mica sheet c is the state distribution that the plane passes through the footpath line, and the mixture gets into and extrudes in the nib 8 to the cladding is in-process outside cable core b, still has the mica sheet c of great proportion to be the state that the plane passes through the footpath line, makes the cable that obtains possess better mechanical properties and insulating properties.
The insulating property of the traditional cable is enhanced by wrapping a mica tape outside a thermoplastic layer, in the scheme, because the radial line of the cable is vertical to the surface of a mica sheet c, a plurality of layers of mica sheet c insulating layers are formed in a cable wrapping sleeve, the mica sheet c is mixed with a colloid material, the insulating property of the cable can be greatly improved, in addition, because of the existence of the mica sheet c, especially the specific distribution state of the mica sheet c, the bending resistance of the cable is greatly optimized, and the tensile resistance, the extrusion resistance, the ageing resistance and the corrosion resistance of the cable are all improved to a certain degree.
Example two
As shown in fig. 2 and 5, the content of the present embodiment is substantially the same as the first embodiment, except that: a pressure limiting valve is arranged in the air outlet connecting pipe 12, an annular gap 15 penetrating through the cooling cavity 9 and the extrusion die hole 8 is formed in the cold-setting box 3, and the annular gap 15 is located in the middle of the cooling cavity 9.
The purpose of the annular gap 15 is the same as that of the small vent hole 14, however, in comparison, the annular gap 15 makes the pressure of the air pressure on the rubber sleeve a more uniform.
The production method of the insulated cable comprises the following steps: uniformly mixing 89-97% by mass of an injection molding outer coating material, 2-8% by mass of mica sheets c and 1-3% by mass of a binder, heating until the injection molding outer coating material is molten, and injecting the molten viscous fluid into a feeding hopper 10 above a rotary drum 4 from the feeding hopper 10; the rotating cylinder 4 is controlled to rotate at a constant speed, the cable core b is controlled to feed in the core guide sleeve 2 at a constant speed, the viscous fluid is cooled and formed outside the cable core b corresponding to the cooling box to form a cable or a wire coated with an insulating sleeve, and the winding wheel 17 finishes winding of the cable or the wire.
There are situations where the outer surface of the cable needs to be sanded to eliminate possible burrs of the mica sheets c.
The injection molding outer coating material is one or a mixture of polyethylene, PA6 and polyvinyl chloride. The injection molding outer covering material can also be other materials with thermoplastic cold setting characteristics as consideration of different performance requirements of the cable.
The thickness of the mica sheet c is 30-1000 μm, the length-width ratio of the mica sheet c is less than 2, and the ratio of the length to the thickness of the mica sheet c is more than 50.
And (3) obtaining the mica sheets c with corresponding sizes by adopting high-pressure water separation, selecting the corresponding mica sheets c according to the requirements of the diameter of the cable and the thickness of a coating layer, and comprehensively considering the requirements of the insulating property and the mechanical property of the cable.
The apparatus and method can be used to make cables, as shown in fig. 6, and wires, as shown in fig. 7, which can be used for cable cores.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (8)

1. The production method of the insulated cable is characterized by being completed by insulated cable production equipment, wherein the insulated cable production equipment comprises a rack, an extruding machine shell (1), a core guide sleeve (2) and a cold curing box (3);
the extruder shell (1) is fixed on a frame, a rotary cylinder (4) is rotatably connected in the extruder shell (1), a hollow channel is arranged in the rotary cylinder (4), the hollow channel sequentially comprises a hot melting cavity (5) and a centrifugal cavity (6) from top to bottom, the core guide sleeve (2) is inserted in the hollow channel, and an extrusion screw (7) is arranged outside the core guide sleeve (2) positioned in the hot melting cavity (5);
the middle part of the cold-setting box (3) is provided with an extrusion die hole (8) communicated with the lower end of the hollow channel, and the outer side of the extrusion die hole (8) is provided with a cooling cavity (9) positioned on the cold-setting box (3);
the core guide sleeve (2) is fixedly connected with the rack, and the top of the rotary drum (4) is provided with a feeding hopper (10); the stand is rotatably connected with a paying-off wheel (16) positioned above the core guide sleeve (2); a coiling wheel (17) positioned below the cold-setting box (3) is rotatably connected to the rack;
the production method comprises the following steps: uniformly mixing 89-97% of injection molding outer-coating material, 2-8% of mica sheet (c) and 1-3% of binder by mass, heating until the injection molding outer-coating material is molten, and injecting the molten viscous fluid into a feeding hopper (10) above a rotary drum (4) from the feeding hopper (10); the rotating cylinder (4) is controlled to rotate at a constant speed, the cable core (b) is controlled to feed in the core guide sleeve (2) at a constant speed, viscous fluid is cooled and formed outside the cable core (b) corresponding to the cooling box to form a cable or a wire coated with an insulating sleeve, and the winding wheel (17) finishes winding of the cable or the wire.
2. A method for producing an insulated cable according to claim 1, wherein the hot-melt chamber (5) is in the shape of a cone, and a heater located outside the hot-melt chamber (5) is provided between the rotary drum (4) and the extruder housing (1).
3. A method for producing an insulated electric cable according to claim 1, wherein the cooling box (3) has an inlet connection tube (11) at the lower end of the cooling chamber (9) and an outlet connection tube (12) at the upper end of the cooling chamber (9), and the cooling chamber (9) has a spiral air guide plate (13).
4. The insulated cable production method according to claim 3, wherein a pressure limiting valve is arranged in the air outlet connecting pipe (12), the cooling box (3) is provided with a plurality of small air outlet holes (14) communicated with the cooling cavity (9) and the extrusion die hole (8), the small air outlet holes (14) are circumferentially and uniformly distributed on the outer side of the extrusion die hole (8), and the small air outlet holes (14) are positioned in the middle of the cooling cavity (9).
5. The insulated cable production method according to claim 3, wherein a pressure limiting valve is arranged in the air outlet connecting pipe (12), an annular gap (15) penetrating through the cooling cavity (9) and the extrusion die hole (8) is formed in the cold-setting box (3), and the annular gap (15) is located in the middle of the cooling cavity (9).
6. The insulated cable production method according to any one of claims 1 to 5, wherein a first bevel gear ring is provided on the top of the rotary drum (4), and the insulated cable production equipment further comprises a motor, and a second bevel gear ring engaged with the first bevel gear ring is provided on an output shaft of the motor.
7. A method for producing an insulated electric cable according to any of claims 1 to 5, characterized in that the injection-moulded outer covering material is a mixture of one or more of polyethylene, PA6 and polyvinyl chloride.
8. A method for producing an insulated electric cable according to any of claims 1 to 5, characterized in that the thickness of the mica sheets (c) is between 30 and 1000 μm, the aspect ratio of the mica sheets (c) is less than 2, and the ratio of the length to the thickness of the mica sheets (c) is greater than 50.
CN202210276470.5A 2022-03-21 2022-03-21 Insulated cable production method Active CN114613553B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005340031A (en) * 2004-05-27 2005-12-08 Yazaki Corp Electric cable and manufacturing method of the same
CA2857698A1 (en) * 2011-12-02 2013-06-06 Leoni Kabel Holding Gmbh Method for producing a cable core, having a conductor surrounded by an insulation, for a cable, in particular for an induction cable, and cable core and cable
US20150221420A1 (en) * 2012-05-18 2015-08-06 Prysmian S.P.A. Process for Producing an Energy Cable Having a Thermoplastic Electrically Insulating Layer
WO2018087581A1 (en) * 2016-11-11 2018-05-17 Prysmian S.P.A. Process for jointing cables, apparatus for performing such a process and thermoplastic joint so manufactured
CN109065252A (en) * 2018-08-03 2018-12-21 苏州三体智能科技有限公司 Cable and its production method
CN214557005U (en) * 2021-04-06 2021-11-02 湖北艾克电缆有限公司 Mineral cable production and processing equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005340031A (en) * 2004-05-27 2005-12-08 Yazaki Corp Electric cable and manufacturing method of the same
CA2857698A1 (en) * 2011-12-02 2013-06-06 Leoni Kabel Holding Gmbh Method for producing a cable core, having a conductor surrounded by an insulation, for a cable, in particular for an induction cable, and cable core and cable
US20150221420A1 (en) * 2012-05-18 2015-08-06 Prysmian S.P.A. Process for Producing an Energy Cable Having a Thermoplastic Electrically Insulating Layer
WO2018087581A1 (en) * 2016-11-11 2018-05-17 Prysmian S.P.A. Process for jointing cables, apparatus for performing such a process and thermoplastic joint so manufactured
CN109065252A (en) * 2018-08-03 2018-12-21 苏州三体智能科技有限公司 Cable and its production method
CN214557005U (en) * 2021-04-06 2021-11-02 湖北艾克电缆有限公司 Mineral cable production and processing equipment

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