CN114709028A - Non-dripping flame-retardant B1-grade wire and cable and manufacturing system thereof - Google Patents

Non-dripping flame-retardant B1-grade wire and cable and manufacturing system thereof Download PDF

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Publication number
CN114709028A
CN114709028A CN202210541049.2A CN202210541049A CN114709028A CN 114709028 A CN114709028 A CN 114709028A CN 202210541049 A CN202210541049 A CN 202210541049A CN 114709028 A CN114709028 A CN 114709028A
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layer
conductive wire
adjusting
wire core
retardant
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CN114709028B (en
Inventor
王志辉
章先杰
赵迪
彭立沙
黄万里
刘杰
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Guangzhou Nanyang Cable Group Co ltd
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Guangzhou Nanyang Cable Group Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0003—Apparatus or processes specially adapted for manufacturing conductors or cables for feeding conductors or cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/09—Analysing solids by measuring mechanical or acoustic impedance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H01B13/147—Feeding of the insulating material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers 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
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
    • 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
    • H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3462—Cables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/018—Impedance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/023—Solids
    • G01N2291/0231—Composite or layered materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/101—Number of transducers one transducer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/263—Surfaces
    • G01N2291/2634—Surfaces cylindrical from outside
    • 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

Abstract

The invention provides a non-dripping flame-retardant B1-grade wire and cable manufacturing system which comprises a conductive wire core, an enveloping module, a detection module, an adjusting module and an insulating extrusion module, wherein the enveloping module is used for enveloping the conductive wire core so as to form a plurality of protective layers nested on the periphery of the conductive wire core; the adjusting module is used for adjusting the angle of the conductive wire core so as to protect the periphery of the conductive wire core by matching with the insulating extrusion module; the insulation extrusion module is used for extruding the low-smoke halogen-free flame-retardant B1-grade polyolefin material on the outermost layer of the conductive wire core to form a protective layer for protecting the conductive wire core; the detection module detects insulating layer, filling layer, buffering insulating layer, metal isolation layer, flame retardant coating and the outer jacket of conductive core periphery respectively. According to the invention, through the matching of the detection module and the adjustment module, the adjustment module adjusts the position of the conductive wire core based on the detection data of the detection module, so that the eccentricity of the conductive wire core meets the requirements of the generation process.

Description

Anti-dripping flame-retardant B1-grade wire and cable and manufacturing system thereof
Technical Field
The invention relates to the technical field of cable manufacturing, in particular to a non-dripping flame-retardant B1-grade wire cable and a manufacturing system thereof.
Background
GB 31247-2014 Cable and Cable flammability Classification, derived from CPR fire protection test in European Union Standard DIN EN 50399, is a national mandatory standard. By quantifying the technical indexes of cable and optical cable combustion performance classification, the fire safety requirement is more scientific and reasonable, and possible fire hazard is reduced to the minimum.
For example, the CN216212504U prior art discloses a fireproof cable with excellent insulation performance, and a B1-grade fireproof cable not only can compare favorably with the traditional fireproof cable in the aspects of fireproof and combustion performance indexes, but also has advantages in the aspects of product specification diversity, large-scale production efficiency, installation and laying and the like. The fire-proof layer of present fireproof cable all chooses the mica tape as the fire-proof layer for use, and mica tape fire-resistant temperature is low, and the mica tape is easily dampened, and the insulating properties reduces after the dampening, produces the potential safety hazard, and the insulating layer of cable generally is sticis by magnesium oxide and forms, arouses the internal insulation fracture easily during the bending for the bend radius of cable is less, is not convenient for use.
Another typical power cable with B1-grade flame-retardant cross-linked polyethylene insulating polyolefin sheath and a preparation method thereof, as disclosed in the prior art of CN111584145A, along with the development of the cable industry, the application range of the power cable is increasingly wide, but the internal reinforcement mode of the power cable is mainly based on the addition of an armor structure, and is single, and when the power cable is subjected to external high-temperature combustion, internal conductors are combined together, so that the situation of damage and mutual interference is serious, and the flame-retardant mode is mainly based on the self material characteristic or the addition of a passive flame-retardant substance, so that the self material flame-retardant characteristic is polluted, and the flame-retardant effect of the added passive flame-retardant substance is poor, which negatively affects the flame-retardant effect of the power cable.
The invention is made in order to solve the problems of poor flame retardant property, cable core position deviation, serious mutual interference condition, lack of monitoring, poor detection means, poor insulation property and the like which commonly exist in the field.
Disclosure of Invention
The invention aims to provide a non-dripping flame-retardant B1-grade wire cable and a manufacturing system thereof, aiming at the defects.
The invention adopts the following technical scheme:
a non-dripping flame-retardant B1-grade wire and cable manufacturing system comprises a conductive wire core, an enveloping module, a detecting module, an adjusting module and an insulating extrusion module,
the enveloping module is used for enveloping the conductive wire core so as to form a plurality of protective layers nested on the periphery of the conductive wire core;
the adjusting module is used for adjusting the angle of the conductive wire core so as to protect the periphery of the conductive wire core by matching with the insulating extrusion module;
the insulation extrusion module is used for extruding the low-smoke halogen-free flame-retardant B1-grade polyolefin material on the outermost layer of the conductive wire core to form a protective layer for protecting the conductive wire core;
the detection module is used for respectively detecting the insulating layer, the filling layer, the buffering heat-insulating layer, the metal isolating layer, the fireproof layer and the outer protective layer on the periphery of the conductive wire core;
the detection module comprises a detection unit, an analysis unit and a data memory, wherein the detection unit is used for respectively detecting the protective layer, the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer, the fireproof layer and the outer protective layer;
the data memory is used for storing the detection data of the detection unit; the analysis unit is used for analyzing the detection data;
the detection unit comprises an ultrasonic probe and a posture adjusting component, wherein the posture adjusting component is used for adjusting the detection angle of the ultrasonic probe; the ultrasonic probe sequentially acquires a plurality of groups of acoustic impedance data of the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer, the fire-proof layer and the outer protective layer;
wherein the ultrasonic probe is provided on the posture adjustment member, and a detection angle of the ultrasonic probe is adjusted by the posture adjustment member;
the analysis unit respectively acquires acoustic impedance data of the insulating layer, the filling layer, the buffer heat-insulation layer, the metal isolation layer, the fireproof layer and the outer protective layer, and analyzes multiple groups of acoustic impedance data;
wherein the acoustic impedance is calculated according to:
Figure 100002_DEST_PATH_IMAGE002
（1）
wherein, P is the pressure generated by the action of sound wave; v is the vibration speed of medium particles;
the ultrasonic probe is incident perpendicularly to the insulating layer, the filling layer, the buffering heat-insulating layer, the metal isolation layer, the fire-resisting layer and the outer protective layer, is reflected and projected, and is positioned at the boundary of the two mediaThe pressure and normal acceleration generated by the action of sound wave are continuous, and the reflection coefficient F issAnd a transmission coefficient TsCalculated according to the following formula:
Figure 100002_DEST_PATH_IMAGE004
（2）
Figure 100002_DEST_PATH_IMAGE006
（3）
in the formula, Zs_k1Acoustic impedance of the first medium; zs_k2Acoustic impedance of the second medium;
according to formulae (1), (2) and (3), then there is:
Figure 100002_DEST_PATH_IMAGE008
（4）
in the formula IfThe pressure generated by the action of sound waves during incidence; i isIThe pressure generated by the action of sound waves during reflection; I.C. ATPressure due to acoustic wave action in transmission;
parameter acquisition by sonic ultrasonic Probe If、IIAnd ITTo obtain acoustic impedance data and I of each of the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer, the fire-proof layer and the outer protective layerf、IIAnd ITThe mapping relation of the data of (2);
if the posture adjusting component adjusts the mapping relation of at least two groups of data of a plurality of angles acquired by the ultrasonic probe to be inconsistent, the eccentricity of the conductive wire core meets the process requirement through the position of the conductive wire core of the adjusting module.
Optionally, the enveloping module comprises a feeding unit and a nesting unit, and the feeding unit is used for feeding the heat-insulating layer, the metal isolation layer and the fireproof layer; the nesting unit nests the materials of the thermal insulation layer, the metal isolation layer and the fireproof layer at the periphery of the conductive wire core wrapped with the insulation layer; the periphery of the conductive wire core is sequentially provided with an insulating layer, a filling layer, a buffering heat insulation layer, a metal isolation layer and a fireproof layer from inside to outside;
wherein, the feed unit feeds according to filling layer, buffering insulating layer, metal isolation layer and flame retardant coating in proper order, with the electrically conductive sinle silk parcel is in the inlayer.
Optionally, the adjusting module includes an adjusting unit and a clamping unit, and the clamping unit is configured to adjust the position of the conductive wire core; the adjusting unit adjusts the position of the clamping unit according to the detection result of the detection module so as to adjust the angle of the conductive wire core;
the clamping unit comprises a plurality of groups of clamping pieces and a supporting seat, and the supporting seat is used for supporting the adjusting unit and each clamping piece; the supporting seat is provided with a clamping cavity and a plurality of adjusting holes, and each adjusting hole penetrates through the clamping cavity; the adjusting unit is fixedly connected in the adjusting hole, and the other end of the adjusting unit is connected with the clamping piece.
Optionally, the insulation extrusion module comprises an extrusion unit and a melting supply unit, and the extrusion unit is used for coating a fireproof layer on the passing conductive wire core wrapped with the insulation layer, the filling layer, the buffer heat insulation layer and the metal isolation layer; the melting supply unit is used for melting the material of the fire-retardant layer, and the melted fire-retardant layer and the extrusion unit are supplied to form the fire-retardant layer.
Optionally, the extrusion unit includes an extrusion cavity and a thickness adjusting member, and the thickness adjusting member is configured to adjust the thickness of the protective layer of the conductive wire core wrapped with the insulating layer, the filling layer, the buffer thermal insulation layer, and the metal isolation layer; the extrusion cavity is connected with the melt supply unit; wherein the thickness adjusting component is arranged in the extrusion cavity and is used for adjusting the thickness of the low-smoke halogen-free flame-retardant B1-grade polyolefin material supplied by the melting supply unit in a molten state.
Optionally, the melting supply unit includes a temperature detecting member, a melting chamber, a heating member, a pressurizing member, and a supply pipe for supplying a low-smoke halogen-free flame-retardant B1-grade polyolefin material in a molten state, wherein two ends of the supply pipe connect the melting chamber and the extrusion chamber; the temperature detection piece is used for detecting the temperature of the melting cavity; the heating element is arranged in the melting cavity to melt the low-smoke halogen-free flame-retardant B1-grade polyolefin material; the pressurizing member is arranged in the melting cavity and conveys the low-smoke halogen-free flame-retardant B1-grade polyolefin material in a molten state to the extrusion cavity through the supply pipeline.
Optionally, the adjusting unit includes an adjusting rod, a protrusion detecting member and an adjusting driving mechanism, and one end of the adjusting rod is connected to the outer wall of the clamping member; the extension detection piece is used for detecting the extension amount of the adjusting rod; the adjusting driving mechanism is in driving connection with the adjusting rod so as to drive the adjusting rod to extend or retract.
In addition, the invention also provides a non-dripping flame-retardant B1-grade wire cable, which comprises a conductive wire core, an insulating layer, a filling layer, a buffer heat-insulating layer, a metal isolating layer, a fireproof layer and an outer protective layer, wherein the conductive wire core, the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolating layer, the fireproof layer and the outer protective layer are sequentially arranged from the inner layer to the outer layer along the radial direction of the conductive wire core;
wherein the insulating layer is XLPE insulating; the filling layer is filled with high-temperature-resistant inorganic paper; the buffer heat-insulating layer is formed by continuously lapping and wrapping two layers of glass fiber tapes;
the metal isolation layer adopts the 0.08mm copper foil of individual layer to wrap to make the electrically conductive sinle silk of inlayer, insulating layer, filling layer form the structure of inside tie up.
Optionally, the flame retardant coating adopts 3 layers of glass fiber tape, and the continuity between each layer is taken the lid and is tied up the inside of conductive core, insulating layer, filling layer around the mode of package.
Optionally, the outer jacket is wrapped by the low-heat-release and non-dripping low-smoke halogen-free flame-retardant B1-grade polyolefin material, and the conductive wire core, the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer and the fireproof layer are wrapped by the outer jacket.
The beneficial effects obtained by the invention are as follows:
1. the cable has the advantages of low heat release, low smoke, low toxicity index and no dripping;
2. through the matching of the detection module and the adjustment module, the adjustment module adjusts the position of the conductive wire core based on the detection data of the detection module, so that the eccentricity of the conductive wire core meets the process requirement;
3. the low-smoke halogen-free flame-retardant B1-grade polyolefin material is supplied and extruded through the melting supply unit and the extrusion unit, and the transmission unit is matched with the conductive wire core for transportation, so that the protective layer on the outermost layer of the conductive wire can be accurately extruded out, and the protective capability of the conductive wire core on the inner layer of the outermost layer is improved;
4. through the matching of the cooling module and the insulating extrusion module, the outer protective layer formed by extrusion can be cooled in time under the cooling of the cooling module, so that the forming effect of the cable is improved, and the protection capability of the cable is further improved;
5. have the electrically conductive sinle silk of insulating layer and filling layer to the parcel through the package unit and carry out the package operation for the material that buffering insulating layer, metal isolation layer and flame retardant coating correspond the process can be nested in electrically conductive sinle silk's periphery, promotes the holistic fire prevention of cable, the protective capacities that does not drip.
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.
Drawings
The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
FIG. 1 is an overall block diagram of the present invention.
Fig. 2 is a schematic structural diagram of a transmission unit according to the present invention.
Fig. 3 is a schematic cross-sectional view of the transmission unit of the present invention with respect to the conductive wire core.
Fig. 4 is a schematic structural diagram of the detection module of the present invention.
Fig. 5 is a schematic cross-sectional view of an envelope module of the present invention.
Fig. 6 is a schematic view of the envelope module of the present invention in longitudinal section.
Fig. 7 is a schematic structural diagram of a winding seat and a winding driving mechanism of the present invention.
Fig. 8 is a schematic cross-sectional view of an extrusion unit of the present invention.
Fig. 9 is a schematic cross-sectional view of a-a in fig. 8.
Fig. 10 is a schematic structural diagram of an adjusting ring of the present invention.
FIG. 11 is a schematic view of the structure of the melt supply unit of the present invention.
Fig. 12 is a schematic structural diagram of a cooling module and a transmission unit according to the present invention.
Fig. 13 is a side view of a cooling module of the present invention.
Fig. 14 is a schematic cross-sectional view at B-B in fig. 13.
The reference numbers illustrate: 1. a conductive wire core; 2. a telescopic rod; 3. an ultrasonic probe; 4. a rotating ring; 5. a support ring; 6. a rotation angle detecting member; 7. a detection hole; 8. a cable; 9. an adjustment ring; 10. an adjustment plate; 11. an extension bar; 12. a protracting drive mechanism; 13. a supply conduit; 14. an extrusion chamber; 15. scraping the hole; 16. an adjustment member; 17. erecting a rod; 18. a first conveyor belt; 19. a second conveyor belt; 20. a base plate; 21. a second limit roller; 22. a vertical plate; 23. a storage chamber; 24. a movable seat; 25. a winding seat; 26. a supply unit; 27. a material; 28. a fixed seat; 29. a cavity is communicated; 30. a poke rod; 31. a travel bar; 32. a melting chamber; 33. a pressing member; 34. a transmission unit; 35. a first limit roller; 36. a transmission drive mechanism; 37. a second adjusting seat; 38. a first adjusting seat; 39. a cooling section; 40. a cooling chamber; 41. a fixing plate; 42. a cooling unit.
Detailed Description
The following is a description of embodiments of the present invention with reference to specific embodiments, and those skilled in the art will understand the advantages and effects of the present invention from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.
The first embodiment.
According to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13 and fig. 14, the present embodiment provides a non-dripping flame retardant B1 grade electric wire and cable manufacturing system, which comprises a conductive wire core 1, an enveloping module, a detecting module, an adjusting module and an insulation extruding module,
the enveloping module is used for enveloping the conductive wire core 1 so as to form a plurality of protective layers nested on the periphery of the conductive wire core 1;
the adjusting module is used for adjusting the angle of the conductive wire core 1 so as to be matched with the insulation extrusion module to protect the periphery of the conductive wire core 1;
the insulation extrusion module is used for extruding a low-smoke halogen-free flame-retardant B1-grade polyolefin material on the outermost layer of the conductive wire core 1 to form a protective layer for protecting the conductive wire core 1;
the detection module is used for respectively detecting the insulating layer, the filling layer, the buffering heat-insulating layer, the metal isolating layer, the fireproof layer and the outer protective layer on the periphery of the conductive wire core 1;
the manufacturing system further comprises a processor, the processor is respectively in control connection with the enveloping module, the detecting module, the adjusting module and the insulating extrusion module, and the enveloping module, the detecting module, the adjusting module and the insulating extrusion module are controlled in a centralized manner based on the processor, so that the production efficiency of the cable 8 is improved; meanwhile, the adjustment module is matched with the detection module to dynamically detect the production process of the cable 8, and the adjustment is carried out according to the detection result, so that the production process of the cable 8 can be dynamically adjusted to realize the accurate control of the production of the cable 8;
enveloping the periphery of the conductive wire core 1 through the enveloping module, so that materials can be nested on the periphery of the conductive wire core 1 to form protective layers;
the insulating layer is insulated by XLPE, so that the insulating material directly wraps the conductive wire core 1, and the condition that electric leakage exists between the conductive wire core 1 and each protective layer is avoided; the filling layer is filled with high-temperature-resistant inorganic paper; the buffer heat-insulating layer is formed by continuously lapping and wrapping two layers of glass fiber tapes;
the metal isolation layer is wrapped by a single-layer copper foil with the thickness of 0.08mm, so that the inner-layer conductive wire core 1, the insulation layer and the filling layer form an inner tightening structure;
in addition, the fireproof layer adopts 3 layers of glass fiber tapes, and the interiors of the conductive wire core 1, the insulating layer and the filling layer are fastened in a manner of continuously lapping, covering and wrapping the layers;
the outer protective layer on the outermost layer of the cable 8 is made of low-smoke halogen-free flame-retardant B1-grade polyolefin material with low heat release and no dripping, and wraps the conductive wire core 1, the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer and the fireproof layer;
in this embodiment, the enveloping module envelopes the conductive wire core 1 wrapped with the insulating layer and the filling layer, wherein the filling layer, the buffer heat-insulating layer, the metal isolation layer and the fireproof layer are enveloped by the enveloping module, so that the conductive wire core 1 wrapped with the insulating layer is enveloped in sequence;
the enveloping module comprises a feeding unit 26 and a nesting unit, wherein the feeding unit 26 is used for feeding the heat-punching and insulating layer, the metal isolation layer and the fire-proof layer; the nesting unit nests the materials of the thermal insulation layer, the metal isolation layer and the fireproof layer at the periphery of the conductive wire core 1 wrapped with the insulation layer; the periphery of the conductive wire core 1 is sequentially provided with an insulating layer, a filling layer, a buffering heat insulation layer, a metal isolation layer and a fireproof layer from inside to outside along the radial direction;
the feeding unit 26 sequentially feeds materials according to the sequence of the filling layer, the buffering heat-insulating layer, the metal isolation layer and the fireproof layer so as to wrap the conductive wire core 1 in the inner layer;
in addition, in the embodiment, in order to increase the production efficiency of the cable 8, the conductive wire core 1 wrapped with the insulating layer and the filling layer sequentially passes through the three enveloping modules to realize enveloping of the buffer heat-insulating layer, the metal isolating layer and the fire-proof layer, so that the whole conductive wire core 1 has better flame-retardant property and integrity;
the three enveloping modules sequentially carry out an enveloping procedure of a buffer heat-insulating layer, a metal isolating layer and a fireproof layer, the conductive wire core 1 wrapped with the insulating layer and the filling layer is sequentially enveloped by the buffer heat-insulating layer and sent to the enveloping procedure of the metal isolating layer, then sent to the enveloping procedure of the fireproof layer and then subjected to the procedure of the insulating extrusion module;
in addition, the feeding unit 26 supplies the corresponding enveloping materials according to each enveloping procedure so as to cooperate with the nesting unit to process the conductive wire core 1 wrapped with the insulating layer and the filling layer, so as to improve the fireproof and flame-retardant performances of the whole cable 8; at the same time, the circumference of the material 27 supplied by the supply unit 26 is adapted according to the circumference of the processed cable 8, so as to make the inside of the conductive core 1 more compact;
the nesting unit comprises a storage cavity 23, a moving seat 24, a moving rod 31, a moving driving mechanism and a moving track, wherein the storage cavity 23 is used for storing the moving track, and the moving track is arranged along the length direction of the storage cavity 23;
the moving seat 24 is connected with the moving track in a sliding manner and slides along the direction of the moving track under the driving of the moving driving mechanism; wherein the direction of the moving track is parallel to the transportation direction of the conductive wire core 1;
one end of the movable rod 31 is connected with the movable base 24, the other end of the movable rod 31 is connected with the inner wall of one side of the storage cavity 23, the movable rod 31 is telescopic, and slides along the direction of the movable track under the driving of the movable driving mechanism.
In addition, the nesting unit further comprises a set of stroke detection pieces, the stroke detection pieces are arranged at the head end and the tail end of the moving track to obtain the positions of the moving seat 24 at the head end and the tail end, so as to adjust the reciprocating movement of the moving seat 24 on the moving track, and the material 27 of the feeding unit 26 is transported;
the enveloping module further comprises a wrapping unit, wherein the wrapping unit is used for winding the material 27 supplied by the supply unit 26 around the periphery of the conductive wire core 1 wrapped with the insulating layer, so that 2 layers of glass fiber tapes, a single layer of 0.08mm copper foil and 3 layers of glass fiber tapes corresponding to the buffer heat-insulating layer, the metal isolating layer and the fire-proof layer are respectively wound on the glass fiber tapes;
the wrapping unit comprises a winding seat 25, a winding driving mechanism and an angle detection piece, and the angle detection piece is used for detecting the winding angle of the winding seat 25; the winding seat 25 is used for winding the material 27 supplied by the feeding unit 26 along the axis of the conductive wire core 1; the winding driving mechanism is used for driving the winding seat 25, so that the winding seat 25 can rotate along the axis of the conductive wire core 1; the wrapping unit is arranged on the movable seat 24; the winding seat 25 is provided with a passing cavity 29 for the conductive wire core 1 to pass through, and the circumference of the passing cavity 29 is matched with the circumference of the conductive wire core 1;
in addition, a poke rod 30 is arranged on the winding seat 25, one end of the poke rod 30 is vertically and fixedly connected with one side wall of the winding seat 25, and the other end of the poke rod extends out towards one side far away from the winding seat 25 so as to poke the material 27 supplied by the feeding unit 26 and wind the material 27 on the periphery of the conductive wire core 1 wrapped with the insulating layer;
the feeding unit 26 transports the material 27 in the corresponding process to the storage cavity 23, and the wrapping unit is matched to perform wrapping operation on the conductive wire core 1 wrapped with the insulating layer and the filling layer, so that the material 27 in the corresponding process of the buffering heat-insulating layer, the metal isolation layer and the fireproof layer can be nested on the periphery of the conductive wire core 1;
the feeding unit 26 comprises a feeding cavity and a feeding inlet, and the feeding channel is used for storing materials 27 corresponding to the buffer heat-insulation layer, the metal isolation layer and the fire-proof layer; the buffer heat-insulating layer, the metal isolation layer and the fire-proof layer respectively correspond to 2 layers of glass fiber belts, a single-layer 0.08mm copper foil and 3 layers of glass fiber belts;
the feed inlet is arranged at one end of the feed channel, the other end of the feed channel being in communication with the head end of the storage chamber 23;
the feeding inlet is convenient for an operator to place corresponding materials 27 into the feeding channel, so that the nesting unit nests the materials 27 corresponding to the buffering heat insulation layer, the metal isolation layer and the fire prevention layer on the periphery of the conductive wire core 1;
through the matching of the feeding unit 26 and the nesting unit, the periphery of the conductive wire core 1 wrapped with the insulating layer can be sequentially nested with 2 layers of glass fiber belts, a single layer of 0.08mm copper foil and 3 layers of glass fiber belts, so that the flame retardant protection capability of the cable 8 is improved;
adjusting modules are arranged at the front end and the tail end of the process of wrapping the insulating layer, the filling layer, the buffering heat-insulating layer, the metal isolating layer and the fireproof layer, so that the position of the conductive wire core 1 before and after the process of wrapping the insulating layer, the filling layer, the buffering heat-insulating layer, the metal isolating layer and the fireproof layer can be adjusted, the position of the conductive wire core 1 can be accurately controlled, and the accurate control of the production eccentricity of the cable 8 is improved;
the adjusting module comprises an adjusting unit and a clamping unit, and the clamping unit is used for adjusting the position of the conductive wire core 1; the adjusting unit adjusts the position of the clamping unit according to the detection result of the detection module so as to adjust the angle of the conductive wire core 1;
the clamping unit comprises a plurality of groups of clamping pieces and a supporting seat, and the supporting seat is used for supporting the adjusting unit and each clamping piece; the supporting seat is provided with a clamping cavity and a plurality of adjusting holes, and each adjusting hole penetrates through the clamping cavity; the adjusting unit is fixedly connected in the adjusting hole, and the other end of the adjusting unit is connected with the clamping piece;
optionally, the adjusting unit includes an adjusting rod, a protrusion detecting member and an adjusting driving mechanism, one end of the adjusting rod is connected to the outer wall of the clamping member, and an axis of the adjusting rod is perpendicular to an axis of the conductive wire core 1; the extension detection piece is used for detecting the extension amount of the adjusting rod; the adjusting driving mechanism is in driving connection with the adjusting rod so as to drive the adjusting rod to extend or retract;
the adjusting module further comprises a transmission unit 34, wherein the transmission unit 34 is used for transporting the cable so as to cooperate with the adjusting unit and the clamping unit to transport the conductive wire core 1, so that the conductive wire core 1 can be sequentially subjected to procedures of wrapping an insulating layer, a filling layer, a buffering heat-insulating layer, a metal isolating layer and a fireproof layer; meanwhile, the transmission unit 34 can transport the conductive wire core 1 to the next process, so that the conductive wire core 1 can be transported to the next process, thereby improving the transport efficiency;
the transmission unit 34 includes a base plate 20, a first transmission member, a second transmission member, a transmission driving mechanism 36, a spacing adjustment member, and a set of limit members, which are all disposed on one side of the base plate 20;
wherein the transmission driving mechanism 36 is used for driving the first transmission member and the second transmission member to realize the transmission of the conductive wire core 1; the distance adjusting member is used for adjusting the distance between the first conveying belt and the second conveying belt; the first transmission member and the second transmission member are arranged in parallel to form a transportation part, and the conductive wire core 1 is transported under the driving of the transmission driving mechanism 36;
the first transmission member and the second transmission member adjust the distance through a distance adjusting member, so that the first transmission member and the second transmission member can transport the conductive wire cores 1 with different circumferences;
the group of limiting members are arranged at the head end and the tail end of the transportation part to limit the conductive cables and are matched with the transportation part to transport the conductive cables;
the first transmission member and the second transmission member are arranged in a direction parallel to the direction of the conductive wire core 1 so as to transport the conductive wire core 1;
the first transmission member and the second transmission member are identical in structure; wherein the first conveyance member includes a first conveyance belt 18, a first support frame, and a set of first conveyance rollers provided on the first support frame to support the first conveyance belt 18; the first transmission belt 18 is nested at the periphery of the supporting frame and a group of transmission rollers, and the transmission driving mechanism 36 outputs driving force to act on any one of the transmission rollers through a transmission shaft;
the second conveying member includes a second conveying belt 19, a second support frame, and a set of second conveying rollers provided on the second support frame to support the second conveying belt 19; the second conveying belt 19 is nested on the periphery of the supporting frame and a group of conveying rollers, and the driving force output by the conveying driving mechanism 36 is acted on one of the first conveying roller or the second conveying roller through a transmission shaft;
the distance adjusting component comprises an adjusting piece 16, a group of first adjusting seats 38, a group of second adjusting seats 37, a fixing plate 41, a fixing seat 28 and a group of upright rods 17, wherein the group of first adjusting seats 38 and the group of second adjusting seats 37 are respectively connected with a first supporting frame of the first transportation component and a second supporting frame of the second transportation component;
meanwhile, limiting holes for the upright rods 17 to penetrate through are formed in the two groups of adjusting seats; wherein, the second adjusting seat 37 is fixedly connected with the rod body of one group of the upright rods 17;
one end of the upright rod 17 is vertically and fixedly connected with the bottom plate 20, and the other end of the upright rod 17 extends out towards the other side of the bottom plate 20 and penetrates through the limiting hole, so that the adjusting piece 16 prevents the first transportation component and the second transportation component from deviating in the process of adjusting the distance between the first transportation component and the second transportation component; wherein a set of said first adjustment seats 38 is movable along the orientation of said uprights 17;
the fixed seat 28 is connected with the first support member, and the fixed seat 28 is disposed between a set of first adjusting seats 38, and the position of the first transmission member is adjusted by the adjusting member 16;
the fixing plate 41 is bridged on the upper end surfaces of a group of the first adjusting seats 38, wherein an engaging hole is arranged above the fixing plate 41 facing the fixed seat 28,
a thread is arranged at one end of the adjusting piece 16, and one end of the adjusting piece 16 penetrates through the engaging hole and is connected with the fixed seat 28, wherein the engaging hole is engaged with the thread; when the adjusting piece 16 is rotated, the first transmission component can be far away from or close to the second transmission component, so that the adjustment of the distance between the first transmission component and the second transmission component is realized;
the limiting component comprises a vertical plate 22, a first limiting roller 35 and a group of second limiting rollers 21, one side of the vertical plate 22 is vertically and fixedly connected with the bottom plate 20, one end of the first limiting roller 35 is hinged with the plate body of the vertical plate 22, and the other end of the first limiting roller 35 extends out vertically towards one side far away from the vertical plate 22; meanwhile, the axis of the first limiting roller 35 is parallel to the upper end surface of the bottom plate 20;
one end of the second limiting roller 21 is vertically hinged with the bottom plate 20, and the other end of the second limiting roller extends out vertically towards one side far away from the bottom plate 20;
in addition, the first limiting roller 35 and the second limiting roller 21 limit the conductive wire core 1 in the horizontal direction and the vertical direction, so that the conductive wire core 1 is prevented from being deviated to cause damage to each protective layer;
in addition, after each process is completed, the detection module is required to detect the qualified degree of the processing of each process so as to match the adjustment module to adjust the angle of the conductive wire core 1;
the detection module comprises a detection unit, an analysis unit and a data memory, wherein the detection unit is used for respectively detecting the protective layer, the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer, the fireproof layer and the outer protective layer;
the data memory is used for storing the detection data of the detection unit; the analysis unit is used for analyzing the detection data;
the detection unit includes an ultrasonic probe 3 and a posture adjustment member for adjusting a detection angle of the ultrasonic probe 3; the ultrasonic probe 3 sequentially acquires a plurality of groups of acoustic impedance data of the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer, the fire-proof layer and the outer protective layer;
wherein the ultrasonic probe 3 is provided on the posture adjustment member, and the detection angle of the ultrasonic probe 3 is adjusted by the posture adjustment member;
the analysis unit respectively acquires acoustic impedance data of the insulating layer, the filling layer, the buffer heat-insulation layer, the metal isolation layer, the fireproof layer and the outer protective layer, and analyzes multiple groups of acoustic impedance data;
wherein the acoustic impedance is calculated according to:
Figure DEST_PATH_IMAGE010
（1）
wherein, P is the pressure intensity (also called as sound intensity) generated by the sound wave action of the ultrasonic probe; v is the vibration speed of medium particles;
the ultrasonic probe is incident perpendicularly to the insulating layer, the filling layer, the buffering heat-insulating layer, the metal isolation layer, the fire-proof layer and the outer protective layer, reflection and projection are generated, pressure and normal acceleration generated by the action of sound waves at the junction of the two media are continuous, and then the reflection coefficient F is obtainedsAnd a transmission coefficient TsCalculated according to the following formula:
Figure DEST_PATH_IMAGE012
（2）
Figure DEST_PATH_IMAGE014
（3）
in the formula, Zs_k1Acoustic impedance of the first medium; zs_k2The acoustic impedance of the second medium;
according to formulae (1), (2) and (3), then there is:
Figure DEST_PATH_IMAGE016
（4）
in the formula IfThe pressure generated by the action of sound waves during incidence; i isIThe pressure generated by the action of sound waves during reflection; i isTPressure due to acoustic wave action in transmission;
parameter acquisition by ultrasound probe If、IIAnd ITTo obtain acoustic impedance data and I of each of the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer, the fire-proof layer and the outer protective layerf、IIAnd ITThe mapping relationship of the data of (1);
if the posture adjusting component adjusts at least two groups of data mapping relations of a plurality of angles acquired by the ultrasonic probe 3 to be inconsistent, the eccentricity of the conductive wire core 1 meets the process requirement through the position of the conductive wire core 1 of the adjusting module;
the posture adjusting component comprises a support ring 5, a rotating ring 4, a rotation driving mechanism, a rotation angle detecting part 6 and a telescopic component, wherein the rotating ring 4 and the support ring 5 are both nested on the periphery of the conductive wire core 1, and the support ring 5 is used for supporting the rotating ring 4;
the inner wall of the support ring is provided with an annular track, wherein the rotating ring 4 is nested on the inner side of the support ring 5, and the rotating ring 4 is connected with the support ring 5 in a sliding manner and slides along the annular track on the inner side of the support ring 5 under the driving of the rotating driving mechanism;
the rotating ring 4 is provided with a detection hole 7 for the conductive wire core 1 to pass through, wherein the rotating hole is coaxially arranged with the rotating ring 4;
the telescopic member is connected with the inner wall of the rotating ring 4, wherein the extending member comprises a telescopic rod 2, an extending detection piece and a telescopic driving mechanism, one end of the telescopic rod 2 is connected with the inner wall of the rotating ring, the other end of the telescopic rod 2 extends towards the inner wall far away from the support ring 5, and the end part of the telescopic rod 2 is connected with the ultrasonic probe 3; in addition, in the process of detecting each protective layer, the ultrasonic probe 3 abuts against the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer, the fire-proof layer and the outer protective layer, and data of each protective layer is obtained;
optionally, the insulation extrusion module comprises an extrusion unit and a melting supply unit, and the extrusion unit is used for coating a fireproof layer on the conductive wire core 1 wrapped with the insulation layer, the filling layer, the buffer heat insulation layer and the metal insulation layer; the melting supply unit is used for melting the material 27 of the fire-resisting layer, and the melted fire-resisting layer and the extrusion unit are supplied to form the fire-resisting layer;
optionally, the extrusion unit includes an extrusion cavity 14 and a thickness adjustment member, and the thickness adjustment member is used for adjusting the thickness of the protective layer of the conductive wire core 1 wrapped with the insulating layer, the filling layer, the buffer heat insulation layer, and the metal isolation layer; the extrusion chamber 14 is connected to the melt supply unit; wherein the thickness adjusting component is arranged in the extrusion cavity 14 and is used for adjusting the thickness of the low-smoke halogen-free flame-retardant B1-grade polyolefin material supplied by the melting supply unit in a molten state;
the thickness adjusting component comprises a plurality of types of adjusting rings 9, adjusting plates 10, an extension detecting piece, an extension rod 11 and an extension driving mechanism 12, wherein the adjusting plates 10 are arranged in the extrusion cavity 14, and the adjusting rods are used for adjusting the positions of the adjusting plates 10; the adjusting driving mechanism is used for driving the adjusting rod to perform telescopic motion;
one end of the adjusting rod is connected with the adjusting plate 10, the other end of the adjusting rod is connected with the inner wall of the extrusion cavity 14, and the extension detecting piece is used for detecting the extension length of the adjusting rod;
the adjusting ring 9 is provided with a scraping hole 15, the aperture of the scraping hole 15 is determined according to the circumference of the produced cable, and the circumferences required by each type of cable are not consistent, so that the details are not repeated herein; meanwhile, the adjusting ring 9 can also scrape burrs formed on the adjusting plate 10, so that the surface of the outer protective layer on the outermost layer is smoother, the attractiveness of the whole cable 8 is improved, the surface of the extruded outer protective layer of the cable 8 is smooth and clean, and the poor-quality problems of rough surface, scorching, impurities and the like do not exist;
optionally, the melting supply unit includes a temperature detecting element, a melting chamber 32, a heating element, a pressurizing element 33 and a supply pipe 13, the supply pipe 13 is used for supplying a low smoke halogen-free flame retardant B1 grade polyolefin material in a molten state, wherein two ends of the supply pipe 13 are connected with the melting chamber 32 and the extrusion chamber 14; the temperature detection piece is used for detecting the temperature of the melting cavity 32; the heating element is arranged in the melting cavity 32 to melt the low-smoke halogen-free flame-retardant B1-grade polyolefin material; the pressurizing member 33 is arranged in the melting chamber 32 and transports the low-smoke halogen-free flame-retardant B1-grade polyolefin material in a molten state into the extrusion chamber 14 through the supply pipe 13;
a closed loop is formed among the temperature detection element, the melting cavity 32, the heating element and the processor, if the temperature in the melting cavity 32 does not reach the set temperature at present, the processor heats the heating element, so that the low-smoke halogen-free flame-retardant B1-grade polyolefin material in the melting cavity 32 is in a molten state, and the low-smoke halogen-free flame-retardant B1-grade polyolefin material in the molten state is conveyed to the extrusion cavity through the supply pipeline 13 by matching with the pressurizing member 33;
it is right through melting supply unit and extrusion unit low smoke and zero halogen fire-retardant B1 level polyolefin material supplies and extrudees, and the cooperation transmission unit 34 is right electric wire core 1's transportation for the outermost inoxidizing coating of electric wire rod can be by accurate extrusion out, promotes the protective capacities of the electric wire core 1 of outermost nexine.
Example two.
This embodiment should be understood to include at least all the features of any one of the embodiments described above and further modified based on the description of fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13 and fig. 14, and in that the present invention further provides a flame retardant B1 grade electric wire and cable without dripping, wherein the cable 8 includes a conductive core 1, an insulating layer, a filling layer, a buffer insulating layer, a metal insulating layer, a flame retardant layer and an outer protective layer, which are sequentially disposed from the inner layer to the outer layer in the direction of the radius of the conductive core 1;
in the embodiment, the conductive wire core 1 is made of a copper conductor, so that the conductive wire core is consistent with a conventional conductor and plays a role in power transmission;
the insulating layer is insulated by XLPE; the filling layer is filled with high-temperature-resistant inorganic paper; the buffer heat-insulating layer is formed by continuously lapping and wrapping two layers of glass fiber tapes; according to the standard requirements of products, XLPE must be adopted, and the material 27 can generate a large amount of heat and support combustion at high temperature or during combustion;
in addition, the third layer that outwards extends along 1 radius of conductive core is the filling layer for the filling layer, and wherein, the filling layer adopts high temperature resistant inorganic paper filling layer, the filling layer effect: the roundness of the multi-core cable 8 is ensured; the heat insulation and flame retardant effects are achieved;
the third layer extending outwards along the radius of the conductive wire core 1 is a filling layer which is a buffer heat-insulating layer, and 2 layers of glass fiber tapes are adopted; covering and lapping continuously in a single layer, wherein the covering rate is 30-35%; wherein, the glass fiber belt is formed by weaving a plurality of strands of glass fiber yarns, has the functions of fire resistance and heat insulation, and takes the material 27 as a buffer heat-insulating layer; the buffer heat insulation layer has the functions of fire prevention and heat dispersion; meanwhile, the glass fiber tape has a large insulation thermal expansion coefficient, and when the cable 8 burns, the layer can leave a certain space for plastic insulation expansion at a high temperature, so that the plastic insulation expansion layer cannot overflow the insulation layer after insulation softening to directly receive fire, generate a large amount of heat and support combustion;
the fourth layer extending outwards along the radius of the conductive wire core 1 is a filling layer which is a metal isolation layer, and the metal isolation layer is wrapped by a single-layer copper foil with the thickness of 0.08mm, so that the inner-layer conductive wire core 1, the insulating layer and the filling layer form an inner tightening structure; copper foil function: tightening the internal structure to enable the internal structure to be infinitely close to a whole; the melting point of copper is up to 1083 ℃, the flame temperature of a B1-grade flame retardant test is about 950-1000 ℃, and the flame-proof effect is achieved, so that the protective performance of the cable 8 is not reduced due to the fact that the internal raw material 27 directly receives fire;
optionally, a fifth layer extending outwards along the radius of the conductive wire core 1 is a filling layer which is a fireproof layer, wherein the fireproof layer adopts 3 layers of glass fiber tapes, and the interiors of the conductive wire core 1, the insulating layer and the filling layer are fastened in a manner of continuously lapping and wrapping the layers; the fireproof layer is wrapped by 3 single-layer continuous lapping covers, and the lapping rate is 30% -35%; in addition, the fireproof layer has the functions of preventing fire and dispersing heat; meanwhile, the fireproof layer has a buffering effect on the expansion of an internal structure, so that the outer protective layer with sparks is prevented from dropping due to the internal expansion, and the unqualified flame-retardant B1 test or the reduction of the protective performance is avoided;
optionally, a fifth layer extending outwards along the radius of the conductive wire core 1 is a filling layer which is an outer protection layer, wherein the outer protection layer is made of a low-heat-release and non-dripping low-smoke halogen-free flame-retardant B1-grade polyolefin material and wraps the conductive wire core 1, the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer and the fireproof layer; in addition, the outer protective layer is processed through the insulating extrusion module in an extrusion mode, so that the integrity of a finished cable 8 product is enhanced; wherein the exhale layer has the advantages of low heat release, low smoke, low toxicity index, no dripping of the material 27 itself.
Example three.
This embodiment should be understood to include at least all the features of any one of the embodiments described above and further modified therefrom, as shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 and 14, and in that the pasture system further comprises a cooling module for cooling the outer circumference of the cable 8 to reduce the temperature of the outer jacket of the cable 8;
the cooling module comprises a cooling cavity 40 and a cooling unit, and the cooling unit is used for cooling the passing cable 8 so as to be matched with the insulation extrusion module to cool the outer protective layer of the conductive wire core 1; the cooling cavity 40 is used for the conductive cable to pass through, wherein after the outer protective layer of the conductive cable is extruded by the insulating extrusion module, the outer protective layer can be cooled by cooling of the cooling unit, so that the production efficiency of the cable 8 is improved;
the cooling unit is arranged in the cooling cavity 40 and cools the conductive wire core 1 conveyed through the cooling cavity 40;
the cooling unit comprises a plurality of cooling parts 39 and a cooling controller, wherein the cooling controller is used for cooling and controlling each cooling part 39; the cooling portions 39 are distributed in sequence from the head end to the tail end of the cooling cavity 40 and cool the passing cable 8; in particular, each cooling part 39 has a distribution from low cooling to high cooling, and is respectively in control connection with the cooling controller, and the cooling temperature of each cooling part 39 is controlled under the control of the cooling controller;
in addition, the cooling module further comprises a temperature detection piece, wherein the temperature detection piece is used for detecting the temperature of an outer protection layer formed by extruding the cable 8 from the insulation extrusion module to the cable 8, and performing cooling operation on the cable 8 according to the temperature value; the cooling control of the temperature controller to each cooling portion 39 is a technical means known to those skilled in the art, and those skilled in the art can query a related technical manual to obtain the technology, so that details are not described in this embodiment;
in this embodiment, the transmission unit 34 is further disposed at the end of the cooling chamber 40 to transport the cable 8 completely cooled, so that the cable 8 is continuously transported;
through the cooling module with the cooperation of insulating module of extruding for the outer jacket that the extrusion formed can carry out timely cooling to the outer jacket of cable 8 under the cooling of cooling module, in order to promote the shaping effect of cable 8, also further promoted the protective capacities of cable 8.
The disclosure is only a preferred embodiment of the invention, and is not intended to limit the scope of the invention, so that all equivalent technical changes made by using the contents of the specification and the drawings are included in the scope of the invention, and further, the elements thereof can be updated as the technology develops.

Claims (10)

1. A non-dripping flame-retardant B1-grade wire and cable manufacturing system comprises a conductive wire core, and is characterized by further comprising an enveloping module, a detecting module, an adjusting module and an insulating extrusion module,
the enveloping module is used for enveloping the conductive wire core so as to form a plurality of protective layers nested on the periphery of the conductive wire core;
the adjusting module is used for adjusting the angle of the conductive wire core so as to protect the periphery of the conductive wire core by matching with the insulating extrusion module;
the insulation extrusion module is used for extruding the low-smoke halogen-free flame-retardant B1-grade polyolefin material on the outermost layer of the conductive wire core to form a protective layer for protecting the conductive wire core;
the detection module is used for respectively detecting the insulating layer, the filling layer, the buffering heat-insulating layer, the metal isolating layer, the fireproof layer and the outer protective layer on the periphery of the conductive wire core;
the detection module comprises a detection unit, an analysis unit and a data memory, wherein the detection unit is used for respectively detecting the protective layer, the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer, the fireproof layer and the outer protective layer;
the data memory is used for storing the detection data of the detection unit; the analysis unit is used for analyzing the detection data;
the detection unit comprises an ultrasonic probe and a posture adjusting component, and the posture adjusting component is used for adjusting the detection angle of the ultrasonic probe; the ultrasonic probe sequentially acquires a plurality of groups of acoustic impedance data of the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer, the fire-proof layer and the outer protective layer;
wherein the ultrasonic probe is provided on the posture adjustment member, and a detection angle of the ultrasonic probe is adjusted by the posture adjustment member;
the analysis unit respectively obtains acoustic impedance data of the insulating layer, the filling layer, the buffer heat-insulation layer, the metal isolation layer, the fireproof layer and the outer protection layer, and analyzes multiple groups of acoustic impedance data;
wherein the acoustic impedance is calculated according to:
Figure DEST_PATH_IMAGE002
（1）
wherein, P is the pressure generated by the action of sound wave; v is the vibration speed of medium particles;
the ultrasonic probe is incident perpendicularly to the insulating layer, the filling layer, the buffering heat-insulating layer, the metal isolation layer, the fire-proof layer and the outer protective layer, reflection and projection are generated, pressure and normal acceleration generated by the action of sound waves at the junction of the two media are continuous, and then the reflection coefficient F is obtainedsAnd a transmission coefficient TsCalculated according to the following formula:
Figure DEST_PATH_IMAGE004
（2）
Figure DEST_PATH_IMAGE006
（3）
in the formula, Zs_k1Acoustic impedance of the first medium; z is a linear or branched members_k2The acoustic impedance of the second medium;
according to formula (1), formula (2) and formula (3), there is:
Figure DEST_PATH_IMAGE008
（4）
in the formula IfThe pressure generated by the action of sound waves during incidence; i isIThe pressure generated by the action of sound waves during reflection; i isTPressure due to acoustic wave action in transmission;
parameter acquisition by sonic ultrasonic Probe If、IIAnd ITTo learn from each of saidAcoustic impedance data and I of insulating layer, filling layer, buffer heat-insulating layer, metal isolation layer, fire-proof layer and outer protective layerf、IIAnd ITThe mapping relationship of the data of (1);
if the posture adjusting component adjusts the mapping relation of at least two groups of data of a plurality of angles acquired by the ultrasonic probe to be inconsistent, the eccentricity of the conductive wire core meets the process requirement through the position of the conductive wire core of the adjusting module.
2. The system for manufacturing no-drip flame retardant grade B1 electric wire and cable according to claim 1, wherein the enveloping module comprises a feeding unit and a nesting unit, the feeding unit is used for feeding the heat-insulating layer, the metal isolation layer and the fire-proof layer; the nesting unit nests the materials of the thermal insulation layer, the metal isolation layer and the fireproof layer at the periphery of the conductive wire core wrapped with the insulation layer; the periphery of the conductive wire core is sequentially provided with an insulating layer, a filling layer, a buffering heat insulation layer, a metal isolation layer and a fireproof layer from inside to outside;
the feeding unit sequentially feeds materials according to the filling layer, the buffering heat insulation layer, the metal isolation layer and the fire-proof layer, so that the conductive wire core is wrapped in the inner layer.
3. The system for manufacturing the non-dripping flame-retardant B1-grade electric wire and cable according to claim 2, wherein the adjusting module comprises an adjusting unit and a clamping unit, and the clamping unit is used for adjusting the position of the conductive wire core; the adjusting unit adjusts the position of the clamping unit according to the detection result of the detection module so as to adjust the angle of the conductive wire core;
the clamping unit comprises a plurality of groups of clamping pieces and a supporting seat, and the supporting seat is used for supporting the adjusting unit and each clamping piece; the supporting seat is provided with a clamping cavity and a plurality of adjusting holes, and each adjusting hole penetrates through the clamping cavity; the adjusting unit is fixedly connected in the adjusting hole, and the other end of the adjusting unit is connected with the clamping piece.
4. The system for manufacturing no-dripping flame-retardant B1 grade wire and cable according to claim 3, wherein the insulation extrusion module comprises an extrusion unit and a melt supply unit, the extrusion unit is used for coating a fire-proof layer on the passing conductive wire core wrapped with an insulation layer, a filling layer, a buffer heat-insulation layer and a metal isolation layer; the melting supply unit is used for melting the material of the fire-retardant layer, and the melted fire-retardant layer and the extrusion unit are supplied to form the fire-retardant layer.
5. The system for manufacturing the B1-grade wire and cable without dropping flame retardant of claim 4, wherein the extrusion unit comprises an extrusion cavity and a thickness adjusting member, the thickness adjusting member is used for adjusting the thickness of the protective layer of the conductive wire core wrapped with the insulation layer, the filling layer, the buffer thermal insulation layer and the metal isolation layer; the extrusion cavity is connected with the melt supply unit; wherein the thickness adjusting component is arranged in the extrusion cavity and is used for adjusting the thickness of the low-smoke halogen-free flame-retardant B1-grade polyolefin material supplied by the melting supply unit in a molten state.
6. The system for manufacturing a non-dripping flame-retardant B1 grade wire and cable according to claim 5, wherein the melting supply unit comprises a temperature detector, a melting chamber, a heating element, a pressurizing element and a supply pipe for supplying a low-smoke halogen-free flame-retardant B1 grade polyolefin material in a molten state, wherein two ends of the supply pipe are connected with the melting chamber and the extrusion chamber; the temperature detection piece is used for detecting the temperature of the melting cavity; the heating element is arranged in the melting cavity to melt the low-smoke halogen-free flame-retardant B1-grade polyolefin material; the pressurizing member is arranged in the melting cavity and conveys the low-smoke halogen-free flame-retardant B1-grade polyolefin material in a molten state to the extrusion cavity through the supply pipeline.
7. The no-drip flame retardant B1-grade wire and cable manufacturing system according to claim 6, wherein the adjusting unit comprises an adjusting rod, a protrusion detector and an adjusting driving mechanism, one end of the adjusting rod is connected to the outer wall of the clamping member; the extension detection piece is used for detecting the extension amount of the adjusting rod; the adjusting driving mechanism is in driving connection with the adjusting rod so as to drive the adjusting rod to extend or retract.
8. The non-dripping flame-retardant B1-grade wire and cable is manufactured by using the non-dripping flame-retardant B1-grade wire and cable manufacturing system according to claim 7, wherein the cable comprises a conductive wire core, an insulating layer, a filling layer, a buffer heat-insulating layer, a metal isolating layer, a flame-retardant layer and an outer protective layer which are sequentially arranged from the inner layer to the outer layer along the radius direction of the conductive wire core;
wherein the insulating layer is XLPE insulating; the filling layer is filled with high-temperature-resistant inorganic paper; the buffer heat-insulating layer is formed by continuously lapping and wrapping two layers of glass fiber tapes;
the metal isolation layer adopts the 0.08mm copper foil of individual layer to wrap to make the electrically conductive sinle silk of inlayer, insulating layer, filling layer form the structure of inside tie up.
9. The anti-dripping flame-retardant B1-grade electric wire and cable according to claim 8, wherein the fire-retardant layer is 3 layers of glass fiber tapes, and the conductive wire core, the insulating layer and the filling layer are fastened in a continuous lapping and wrapping mode among the layers.
10. The non-dripping flame-retardant B1-grade electric wire and cable according to claim 9, wherein the outer sheath is made of low-heat-release non-dripping low-smoke halogen-free flame-retardant B1-grade polyolefin material to wrap the conductive wire core, the insulating layer, the filling layer, the buffer heat-insulating layer, the metal isolation layer and the fire-retardant layer.
CN202210541049.2A 2022-05-19 2022-05-19 Anti-dripping flame-retardant B1-level wire and cable and manufacturing system thereof Active CN114709028B (en)

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