CN113314260A - Insulated cable and preparation method thereof - Google Patents
Insulated cable and preparation method thereof Download PDFInfo
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- CN113314260A CN113314260A CN202110870126.4A CN202110870126A CN113314260A CN 113314260 A CN113314260 A CN 113314260A CN 202110870126 A CN202110870126 A CN 202110870126A CN 113314260 A CN113314260 A CN 113314260A
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
- H01B7/181—Protections not provided for in groups H01B7/182 - H01B7/26 composed of beads or rings
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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
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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
- H01B13/0036—Details
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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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
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- Manufacturing Of Electric Cables (AREA)
Abstract
An insulated cable and a preparation method thereof comprise a cable core, an insulating layer, a flame retardant layer, a shielding layer, a waterproof layer, an armor layer, a beam coil and a sheath layer, wherein when the beam coil is installed, the beam coil is sleeved on the cable and moves along with the cable, two clamping plates synchronously move horizontally and oppositely to clamp the beam coil, the clamping plates continue to move, and the clamping plates are matched with buckles at the two ends of the clamping plates, so that the inner wall of the beam coil is attached to the armor layer. The inner wall of the beam coil is attached to the armor layer, the interior of the cable can be tightened, the internal structure is prevented from being exposed and loosened after the surface of the cable is abraded, the strength of the cable is improved, the beam coil can be automatically installed, and the production efficiency of the cable is improved.
Description
Technical Field
The invention relates to the technical field of cable production, in particular to an insulated cable and a preparation method thereof.
Background
A cable is a rope-like cable made up of several twisted sets of conductors, each set insulated from the other and often twisted around a center, the entire outer surface being covered with a highly insulating covering. With the development of national economy and the progress of technology, the application field and the range of the cable are wider and wider, the requirement on the cable is higher and higher, and the requirements are mainly embodied as comprehensive requirements, such as mechanical strength, wear resistance, gnawing prevention, flame retardance, fire resistance and the like.
The stability and strength of the power cable affect the stability of the operation of the power system. The existing cable is poor in use environment, the surface of the cable is prone to abrasion after long-time use, leads to the fact that wires inside the cable are exposed and loose, the strength of the scattered wires is low, the cable needs to be checked regularly, and the workload is large. Therefore, there is a need for an improved cable structure.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the insulated cable and the preparation method thereof, the inner wall of the beam coil is attached to the armor layer, the interior of the cable can be tightened, the internal structure is prevented from being exposed and loose after the surface of the cable is abraded, the strength of the cable is improved, the beam coil can be automatically installed, and the production efficiency of the cable is improved.
In order to achieve the above object, the present invention employs the following techniques:
an insulated electrical cable comprising:
the cable core comprises a plurality of uniformly arranged leads, and an isolation layer is filled between any two adjacent leads;
the insulating layer is arranged outside the cable core, a plurality of insulating bulges are uniformly formed on the outside of the insulating layer along the circumferential direction, and the insulating layer is made of DMC material;
the flame-retardant layer is arranged outside the insulating layer, a plurality of grooves are formed in the insulating layer, and the grooves are matched with the insulating bulges;
the shielding layer is arranged outside the flame-retardant layer;
the waterproof layer is arranged outside the shielding layer;
the armor layer is arranged outside the waterproof layer, and a plurality of armor strips arranged along the axis direction of the armor layer are uniformly arranged in the armor layer;
the beam coils are uniformly arranged outside the armor layer, both ends of each beam coil are provided with buckles, the beam coils are annular when the two buckles are matched, and the inner walls of the beam coils are attached to the armor layer;
and the sheath layer is formed outside the armor layer and the beam coil and is made of polyvinyl chloride.
Furthermore, the conducting wire adopts an aluminum core wire, and the isolating layer adopts an aluminum silicate fiber wire.
Furthermore, polyvinyl chloride is adopted as the flame-retardant layer.
Furthermore, the shielding layer is woven by an aluminum-plastic composite belt.
Further, the waterproof layer adopts high-density polyethylene.
A method for preparing an insulated cable comprising the steps of:
s1: combining a plurality of leads, and filling gaps among the leads by using an isolation layer to obtain a cable core;
s2: forming an insulating layer outside the cable core by adopting an extrusion coating process;
s3: forming a flame-retardant layer outside the insulating layer by adopting an extrusion coating process;
s4: winding a shielding layer outside the flame-retardant layer by adopting a wrapping process;
s5: forming a waterproof layer outside the shielding layer by adopting an extrusion coating process;
s6: forming an armor layer outside the waterproof layer by adopting an extrusion coating process;
s7: an armor layer;
s8: and forming a sheath layer outside the armor layer and the beam coil by adopting an extrusion coating process.
Further, in step S7, uniformly installing a plurality of beam coils outside the armor layer, includes the steps of: the cable coated with the armor layer horizontally penetrates through the center of the rotating mechanism, the beam coil is C-shaped and surrounds the outside of the cable, the beam coil intermittently moves along the cable conveying direction, when the beam coil is fixed, the cutting frame is adjusted by using a telescopic rod to move towards the cable, the cutting wheel is contacted with the beam coil and cuts the cable, the rotating frame circumferentially cuts the beam coil in the rotating process of a vertical plane, in the cutting process of the cutting wheel, the cleaning cylinder adjusts the position of the cleaning brush, the cleaning brush and the cutting wheel are positioned on the same plane, the beam coil is circumferentially cleaned, the cut beam coil is sleeved on the cable and moves along with the cable, the two clamping plates synchronously and horizontally move oppositely to clamp the beam coil, the clamping plates continue to move, the clamping plates are matched with buckles at the two ends of the clamping plates, the inner wall of the beam coil is attached to the armor layer, the two clamping plates move oppositely and simultaneously move along the axial line direction in the rotating frame at the same speed as the cable, and after the beam coil is cut in the circumferential direction, the beam coil continues to move, and the cutting procedure is repeated.
Further, when the rotating frame rotates on a vertical plane, a plurality of support frames symmetrically connected with the outer wall of the rotating frame rotate to be connected with the idler wheels, the idler wheels rotate in the annular grooves formed in the inner wall of the fixing frame, the rotating frame rotates along the central axis of the rotating frame on the vertical plane, the driving motor drives the outer wall of the rotating frame to rotate through the driving roller in a friction mode.
Further, when the beam coil is cleaned in the circumferential direction, the air blowing pipe is used for blowing air to the surface of the cable through a plurality of obliquely arranged air nozzles, the oblique direction of the air nozzles is opposite to the moving direction of the cable, cutting chips are blown to the uncut part of the beam coil and collected, and the surface of the cut beam coil is kept clean.
Furthermore, when the two clamping plates clamp the bundle coil, the clamping cylinders drive the two clamping plates to move horizontally, the baffle cylinders drive the baffle to move horizontally, firstly, the baffle moves towards the cable, the cut bundle coil is blocked and positioned, then the two clamping plates move horizontally to clamp the bundle coil, meanwhile, the clamping plates move along the axial line direction in the rotating frame, the moving speed of the clamping plates is consistent with the cable conveying speed until the clamping plates are matched with the buckles at the two ends of the bundle coil, the clamping plates reset with the baffle in the reverse moving direction, the next bundle coil is clamped, when the clamping plates cylinder stretches out and draws back, the bottom end of the driving support rod moves back and forth along the sliding groove, and the clamping cylinders move back and forth along the cable conveying direction.
The invention has the beneficial effects that:
1. the inner wall of the beam coil is attached to the armor layer, the inside of the cable can be tightened, the exposed and loose inner structure after the surface of the cable is abraded is prevented, the strength of the cable is improved, the beam coil can be automatically installed, and the production efficiency of the cable is improved.
2. The friction mode is adopted to drive the rotating frame to rotate, so that the rotating frame can be prevented from continuously moving when cutting is blocked, the cutting wheel is abraded, and the device is protected.
3. Through the circulation of the beam coil conveying and cutting processes, the installation operation of a plurality of beam coils can be continuously carried out, and the cable production time is shortened.
4. The cutting scraps are blown to the uncut part of the beam coil and collected, so that the surface of the cut beam coil is kept clean, the combination effect of the beam coil and the sheath layer is improved, and the cable is prevented from cracking.
Drawings
Fig. 1 is a schematic view of the cable structure of the present invention.
FIG. 2 is a schematic view of the structure of the flame retardant layer of the present invention.
Fig. 3 is a schematic view of a beam coil structure according to the present invention.
Fig. 4 is a schematic cross-sectional structure of the cable of the present invention.
Fig. 5 is a first schematic structural diagram of the rotating mechanism of the beam coil mounting apparatus in step S7 according to the present invention.
Fig. 6 is a schematic view of a partial structure a in fig. 5.
Fig. 7 is a second schematic structural diagram of the rotating mechanism of the beam coil mounting apparatus in step S7 according to the present invention.
Fig. 8 is a schematic diagram of a structure of the clamping plate in the beam coil mounting apparatus in step S7 according to the present invention.
The labels in the figure are: cable core-1, wire-101, isolation layer-102, insulation layer-2, protrusion-201, flame retardant layer-3, groove-301, shielding layer-4, waterproof layer-5, armor layer-6, armor strip-601, bundling coil-7, buckle-701, sheath layer-8, rotating mechanism-9, rotating frame-901, support frame-902, roller-903, fixing frame-904, annular groove-905, driving roller-906, driving motor-907, cutting mechanism-10, telescopic rod-1001, cutting frame-1002, cutting wheel-1003, cutting motor-1004, cleaning mechanism-11, cleaning cylinder-1101, cleaning brush-1102, blast pipe-1103, air nozzle-1104, clamping mechanism-12, and the like, A clamping plate-1201, a clamping cylinder-1202, a clamping ring-1203, a baffle cylinder-1204, a baffle-1205, a support rod-1206, a clamping plate cylinder-1207 and a platform-13.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the described embodiments of the present invention are a part of the embodiments of the present invention, not all of the embodiments of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, or through both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 4, an insulated cable includes a cable core 1 including a plurality of uniformly arranged wires 101, an isolation layer 102 is filled between any two adjacent wires 101, the wires 101 are aluminum core wires, and the isolation layer 102 is an aluminum silicate fiber; the insulating layer 2 is arranged outside the cable core 1, a plurality of insulating bulges 201 are uniformly formed on the outer part of the insulating layer 2 along the circumferential direction, and the insulating layer 2 is made of DMC material; the flame-retardant layer 3 is arranged outside the insulating layer 2, a plurality of grooves 301 are formed in the insulating layer 2, the grooves 301 are matched with the insulating bulges 201, and the flame-retardant layer 3 is made of polyvinyl chloride; the shielding layer 4 is arranged outside the flame-retardant layer 3, and the shielding layer 4 is woven by an aluminum-plastic composite belt; the waterproof layer 5 is arranged outside the shielding layer 4, and the waterproof layer 5 is made of high-density polyethylene; the armor layer 6 is arranged outside the waterproof layer 5, and a plurality of armor strips 601 arranged along the axial direction of the armor layer 6 are uniformly arranged in the armor layer 6; the beam coils 7 are uniformly arranged outside the armor layer 6, two ends of each beam coil 7 are respectively provided with a buckle 701, the beam coils 7 are annular when the two buckles 701 are matched, and the inner walls of the beam coils 7 are attached to the armor layer 6; and the sheath layer 8 is formed outside the armor layer 6 and the beam coil 7, and the sheath layer 8 is made of polyvinyl chloride.
When the cable is prepared, firstly, the plurality of wires 101 are structurally combined according to the use requirement of the cable, so that the wires 101 are uniformly distributed, then, the isolating layer 102 is used for filling gaps among the wires 101 to prepare the cable core 1, the wires 101 adopt aluminum core wires, so that the weight of the cable can be reduced, the oxidation resistance is strong, the service life of the cable is prolonged, and the isolating layer 102 adopts aluminum silicate fiber wires, so that the cable has strong thermal stability and chemical stability, and the isolating layer 102 and the wires 101 are better attached; then, an insulating layer 2 made of DMC material is formed outside the cable core 1 by adopting an extrusion process, the DMC material has good mechanical property, electrical insulating property, arc resistance and antistatic property, the cable strength is improved while the cable insulating property is ensured, a plurality of insulating bulges 201 are uniformly formed outside the insulating layer 2 along the circumferential direction, the insulating bulges 201 are extruded and deformed when the cable is bent, and the cable structure damage caused by the excessive bending of the cable can be prevented because the elastic coefficient of the DMC material is fixed; the flame-retardant layer 3 is sleeved outside the insulating layer 2 by adopting an extrusion coating process, the groove 301 formed inside the flame-retardant layer 3 is matched with the insulating protrusion 201, the contact area between the flame-retardant layer 3 and the insulating layer 2 is increased, the connection stability is improved, the flame-retardant layer 3 adopts polyvinyl chloride which is low in price and good in flame retardance, the production cost of a product can be reduced, and the stable flame retardance is ensured; a shielding layer 4 woven by an aluminum-plastic composite tape is wound on the surface of the flame-retardant layer 3 by adopting a wrapping process, so that partial discharge is avoided; the waterproof layer 5 made of the high-density polyethylene material is formed outside the shielding layer 4 by adopting an extrusion coating process, and the high-density polyethylene has good wear resistance and cold resistance, has excellent anti-cracking performance, is suitable for different environments, prevents water from permeating into the cable and can protect the material in the cable; an armor layer 6 is formed outside the waterproof layer 5, and a plurality of armor strips 601 are uniformly arranged in the armor layer 6, so that the cable can be protected at each circumferential position, the tensile strength and the compressive strength of the cable are enhanced, and the service life of the cable is prolonged; a plurality of beam coils 7 are uniformly arranged outside the armor layer 6, the inner walls of the beam coils 7 are attached to the armor layer 6, the interior of the cable can be tightened, the internal structure is prevented from being exposed and loosened after the surface of the cable is abraded, the strength of the cable is improved, two ends of each beam coil 7 are connected through the buckles 701, the assembly of the beam coils 7 during cable production is facilitated, and the production efficiency is improved; a sheath layer 8 made of polyvinyl chloride materials is formed outside the armor layer 6 and the beam coil 7 by adopting an extrusion process, so that the physical and mechanical properties of the cable are ensured, and the cable is suitable for the requirements of environmental factors.
In step S7, when uniformly installing a plurality of beam coils 7 outside the armor layer 6, the beam coil 7 installation apparatus shown in fig. 5 to 8 is adopted, and the specific structure is as follows:
the rotating mechanism 9 comprises a circular rotating frame 901, and the rotating frame 901 can rotate along the central axis of the rotating frame 901 on a vertical plane;
the cutting mechanism 10 is arranged on the inner wall of the rotating frame 901 and comprises an expansion link 1001, the end part of the expansion link 1001 is connected with a cutting frame 1002, the cutting frame 1002 is rotatably connected with a cutting wheel 1003, and the plane of the cutting wheel 1003 is parallel to the plane of the rotating frame 901;
the cleaning mechanism 11 is arranged on the inner wall of the rotating frame 901 and comprises a cleaning cylinder 1101, the end part of the cleaning cylinder 1101 is connected with a cleaning brush 1102, and the cleaning brush 1102 and the cutting wheel 1003 are positioned on the same plane;
the clamping mechanism 12 comprises a pair of arc-shaped clamping plates 1201, the two clamping plates 1201 can synchronously move horizontally and oppositely, a vertical plane where the two clamping plates 1201 are located is parallel to a plane where the rotating frame 901 is located, and the two clamping plates 1201 can synchronously move along the axial line direction in the rotating frame 901.
The outer wall of the rotating frame 901 is symmetrically connected with a plurality of supporting frames 902, the supporting frames 902 are rotatably connected with rollers 903, a round fixing frame 904 is matched with the outer portion of the rotating frame 901, an annular groove 905 is formed in the inner wall of the fixing frame 904, the annular groove 905 is matched with the rollers 903, a driving roller 906 is attached to the outer wall of the rotating frame 901, and the driving roller 906 is connected with a driving motor 907.
A cutting motor 1004 is connected to a middle rotating shaft of the cutting wheel 1003, and the cutting motor 1004 is fixed to the cutting frame 1002.
The telescopic rod 1001 and the cleaning cylinder 1101 are both arranged along the radial direction of the rotating frame 901.
The cleaning mechanism 11 further comprises an annular blowing pipe 1103, a plurality of air nozzles 1104 are arrayed on the blowing pipe 1103, the air nozzles 1104 are obliquely arranged, the oblique direction of the air nozzles 1104 is opposite to the moving direction of the cable, and the straight line of the air nozzles 1104 is overlapped with the central axis of the blowing pipe 1103.
The horizontal clamping cylinder 1202 is connected to the center of the outer wall of the clamping plate 1201, the clamping cylinder 1202 is connected with the clamping ring 1203 at the fixed section, the baffle cylinder 1204 is clamped in the clamping ring 1203, the fixed section of the baffle cylinder 1204 is arranged in the clamping ring 1203, and the end of the moving section of the baffle cylinder 1204 is connected with the arc-shaped baffle 1205.
The rotary frame 901 and blast pipe 1103 bottom fixedly connected with platform 13, a pair of parallel spout 1301 has been seted up to platform 13 top surface, and the canned paragraph of chucking cylinder 1202 is connected with the bracing piece 1206, and the bracing piece 1206 bottom slides and locates in the spout 1301, and the bracing piece 1206 is connected with horizontally cardboard cylinder 1207, and cardboard cylinder 1207 is fixed in platform 13.
Specifically, when the beam coil 7 attachment device is used in step S7:
firstly, a cable coated with an armor layer 6 horizontally penetrates through the center of a rotating mechanism 9, a bundling coil 7 is in a C shape and surrounds the outside of the cable, the bundling coil 7 intermittently moves along the cable conveying direction, when the bundling coil 7 is fixed, a telescopic rod 1001 is used for adjusting a cutting frame 1002 to move towards the cable, a cutting wheel 1003 contacts the bundling coil 7 and performs cutting, a plurality of support frames 902 which are symmetrically connected with the outer wall of a rotating frame 901 rotate to connect with a roller 903, when the roller 903 rotates in an annular groove 905 which is formed in the inner wall of a fixed frame 904, the rotating frame 901 rotates along the central axis of the rotating frame 901 on a vertical plane, a driving motor 907 rubs the outer wall of the rotating frame 901 through a driving roller 906, the rotating frame 901 is further driven to rotate, the rotating frame 901 is driven to rotate in a rubbing mode, the phenomenon that the rotating frame 901 continues to move when cutting is blocked can be prevented, the cutting wheel 1003 is abraded, and the protection of the device is realized; the rotating frame 901 cuts the beam coil 7 circumferentially in the vertical plane rotating process, the position of the cleaning brush 1102 is adjusted through the cleaning cylinder 1101 in the cutting process of the cutting wheel 1003, so that the cleaning brush 1102 cleans the cutting position, the cleaning brush 1102 and the cutting wheel 1003 are located on the same plane, the beam coil 7 circumferentially can be cleaned when the rotating frame 901 rotates, meanwhile, the air blowing pipe 1103 blows air to the surface of the cable through a plurality of obliquely arranged air nozzles 1104, the oblique direction of the air nozzles 1104 is opposite to the moving direction of the cable, cutting debris can be blown to the uncut part of the beam coil 7 and collected, the surface of the cut beam coil 7 is kept clean, the combination effect of the beam coil 7 and the sheath layer 8 is improved, and the cable is prevented from cracking; the cut beam coil 7 is sleeved on a cable and moves along with the cable, the two clamping plates 1201 synchronously move horizontally and oppositely to clamp the beam coil 7, the clamping plates 1201 continue to move, the buckles 701 at the two ends of the clamping plates 1201 are matched, the inner wall of the beam coil 7 is attached to the armor layer 6, the two clamping plates 1201 move oppositely while moving at the same speed with the cable and move along the axial line direction in the rotating frame 901, after the circumferential cutting of the beam coil 7 is completed, the beam coil 7 continues to move, the cutting process is repeated, and the installation operation of the plurality of beam coils 7 can be continuously performed through the circulation of the transmission and cutting processes of the beam coil 7, so that the production efficiency of the cable is improved.
When the chucking mechanism 12 is operated, the chucking cylinders 1202 drive the two chucking plates 1201 to move horizontally, the shutter cylinder 1204 drives the shutter 1205 to move horizontally, first, the shutter 1205 moves toward the cable, the cut beam coil 7 is blocked and positioned to prevent the beam coil 7 from moving continuously, then the two clamping plates 1201 move horizontally to clamp the beam coil 7, meanwhile, the clamping plate 1201 moves along the axial line direction in the rotating frame 901, the moving speed of the clamping plate 1201 is consistent with the cable conveying speed until the buckles 701 at the two ends of the beam coil 7 are matched to realize the synchronous movement of the beam coil 7 and the cable during installation, the scratch on the cable surface is prevented from influencing the jointing effect of the cable sheath layer 8, the clamping plate 1201 and the baffle 1205 reversely move to reset to clamp the next beam of coil 7, and when the clamping plate cylinder 1207 stretches out and draws back, the bottom end of the driving support rod 1206 reciprocates along the sliding groove 1301, so that the clamping cylinder 1202 reciprocates along the cable conveying direction.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An insulated electrical cable, comprising:
the cable core (1) comprises a plurality of uniformly arranged leads (101), and an isolation layer (102) is filled between any two adjacent leads (101);
the insulating layer (2) is arranged outside the cable core (1), a plurality of insulating bulges (201) are uniformly formed outside the insulating layer (2) along the circumferential direction, and the insulating layer (2) is made of DMC material;
the flame-retardant layer (3) is arranged outside the insulating layer (2), a plurality of grooves (301) are formed inside the insulating layer (2), and the grooves (301) are matched with the insulating bulges (201);
the shielding layer (4) is arranged outside the flame-retardant layer (3);
the waterproof layer (5) is arranged outside the shielding layer (4);
the armor layer (6) is arranged outside the waterproof layer (5), and a plurality of armor strips (601) arranged along the axial direction of the armor layer (6) are uniformly arranged in the armor layer (6);
the beam coils (7) are uniformly arranged outside the armor layer (6), two ends of each beam coil (7) are respectively provided with a buckle (701), the beam coils (7) are annular when the two buckles (701) are matched, and the inner walls of the beam coils (7) are attached to the armor layer (6);
and the sheath layer (8) is formed outside the armor layer (6) and the beam coil (7), and the sheath layer (8) is made of polyvinyl chloride.
2. An insulated electrical cable according to claim 1, wherein: the conducting wire (101) adopts an aluminum core wire, and the isolating layer (102) adopts an aluminum silicate fiber wire.
3. An insulated electrical cable according to claim 1, wherein: the flame-retardant layer (3) adopts polyvinyl chloride.
4. An insulated electrical cable according to claim 1, wherein: the shielding layer (4) is woven by an aluminum-plastic composite belt.
5. An insulated electrical cable according to claim 1, wherein: the waterproof layer (5) is made of high-density polyethylene.
6. A method for preparing an insulated cable according to any of claims 1 to 5, comprising the steps of:
s1: combining a plurality of leads (101), and filling gaps among the leads (101) with an isolation layer (102) to obtain a cable core (1);
s2: forming an insulating layer (2) outside the cable core (1) by adopting an extrusion coating process;
s3: a flame-retardant layer (3) is formed outside the insulating layer (2) by adopting an extrusion coating process;
s4: winding a shielding layer (4) outside the flame-retardant layer (3) by adopting a wrapping process;
s5: forming a waterproof layer (5) outside the shielding layer (4) by adopting an extrusion coating process;
s6: forming an armor layer (6) outside the waterproof layer (5) by adopting an extrusion coating process;
s7: a plurality of beam coils (7) are uniformly arranged outside the armor layer (6);
s8: and forming a sheath layer (8) outside the armor layer (6) and the beam coil (7) by adopting an extrusion coating process to finish the preparation of the cable.
7. The method of preparing an insulated cable according to claim 6, wherein:
in step S7, a plurality of bundle coils (7) are uniformly mounted outside the armor layer (6), and the method includes the steps of: the cable coated with the armor layer (6) horizontally penetrates through the center of the rotating mechanism (9), the beam coil (7) is in a C shape and surrounds the outside of the cable, the beam coil (7) intermittently moves along the cable conveying direction, when the beam coil (7) is fixed, the cutting frame (1002) is adjusted to move towards the cable by using the telescopic rod (1001), the cutting wheel (1003) contacts the beam coil (7) and performs cutting, the rotating frame (901) performs circumferential cutting on the beam coil (7) in the vertical plane rotating process, the cleaning cylinder (1101) adjusts the position of the cleaning brush (1102) in the cutting process of the cutting wheel (1003), the cleaning brush (1102) and the cutting wheel (1003) are positioned on the same plane, the beam coil (7) is cleaned in the circumferential direction, the cut beam coil (7) is sleeved on the cable and moves along with the cable, the two clamping plates (1201) synchronously and horizontally move oppositely to clamp the beam coil (7), the clamping plates (1201) continue to move, the buckles (701) at the two ends of the clamping plates (1201) are matched, the inner wall of the beam coil (7) is attached to the armor layer (6), the two clamping plates (1201) move oppositely while moving at the same speed with the cable, the two clamping plates move along the axial line direction in the rotating frame (901), and after the beam coil (7) is cut in the circumferential direction, the beam coil (7) continues to move, and the cutting process is repeated.
8. The method of preparing an insulated cable according to claim 7, wherein: when the rotating frame (901) rotates on a vertical plane, a plurality of supporting frames (902) symmetrically connected with the outer wall of the rotating frame (901) rotate to connect the rollers (903), the rollers (903) rotate in annular grooves (905) formed in the inner wall of the fixing frame (904), the rotating frame (901) rotates on the vertical plane along the central axis of the rotating frame (901), the driving motor (907) rubs the outer wall of the rotating frame (901) through the driving roller (906), and the rotating frame (901) is driven to rotate.
9. The method of preparing an insulated cable according to claim 7, wherein: when cleaning the circumferential direction of the beam coil (7), blowing air to the surface of the cable by using an air blowing pipe (1103) through a plurality of obliquely arranged air nozzles (1104), wherein the oblique direction of the air nozzles (1104) is opposite to the moving direction of the cable, blowing cutting debris to the uncut part of the beam coil (7) for collection, and keeping the surface of the cut beam coil (7) clean.
10. The method of preparing an insulated cable according to claim 7, wherein: when the two clamping plates (1201) clamp the beam coil (7), the clamping air cylinder (1202) is used for driving the two clamping plates (1201) to move horizontally, the baffle air cylinder (1204) is used for driving the baffle (1205) to move horizontally, firstly, the baffle (1205) moves towards the cable, the cut beam coil (7) is blocked and positioned, then the two clamping plates (1201) horizontally move to clamp the beam coil (7), meanwhile, the clamping plate (1201) moves along the axial line direction in the rotating frame (901), the moving speed of the clamping plate (1201) is consistent with the cable conveying speed until the buckles (701) at the two ends of the bundle coil (7) are matched, the clamping plate (1201) and the baffle (1205) move reversely to reset for clamping the next bundle coil (7), when the clamping plate cylinder (1207) stretches out and draws back, the bottom end of the driving support rod (1206) reciprocates along the sliding groove (1301), so that the clamping cylinder (1202) reciprocates along the cable conveying direction.
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| CN114822936A (en) * | 2022-04-27 | 2022-07-29 | 浙江三科线缆股份有限公司 | Drag chain cable and forming process thereof |
| CN115547554A (en) * | 2022-10-31 | 2022-12-30 | 深圳市宏亚电子有限公司 | Special cable for underwater robot |
| CN117393241A (en) * | 2023-10-18 | 2024-01-12 | 武汉格林嵩正电缆有限公司 | High-voltage cable insulating layer cladding equipment |
| CN118507170A (en) * | 2024-05-27 | 2024-08-16 | 晶锋集团股份有限公司 | A flame retardant cable for power transmission and transformation engineering and a manufacturing method thereof |
| CN118588353A (en) * | 2024-06-05 | 2024-09-03 | 江苏新金牛线缆有限公司 | Insulated cable and method for preparing the same |
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| CN118588353B (en) * | 2024-06-05 | 2024-11-05 | 江苏新金牛线缆有限公司 | Insulated cable and preparation method thereof |
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Denomination of invention: An insulated cable and its preparation method Effective date of registration: 20230721 Granted publication date: 20211029 Pledgee: Zhejiang Mintai Commercial Bank Co.,Ltd. Chengdu Xinjin sub branch Pledgor: CHENGDU ATLANTIC WIRES AND CABLES Co.,Ltd. Registration number: Y2023980049377 |
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