CN117373745A - Preparation method of electric wire and cable with high insulation performance - Google Patents
Preparation method of electric wire and cable with high insulation performance Download PDFInfo
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- CN117373745A CN117373745A CN202311246927.9A CN202311246927A CN117373745A CN 117373745 A CN117373745 A CN 117373745A CN 202311246927 A CN202311246927 A CN 202311246927A CN 117373745 A CN117373745 A CN 117373745A
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- 238000009413 insulation Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 70
- 238000005491 wire drawing Methods 0.000 claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000001953 recrystallisation Methods 0.000 claims abstract description 4
- 238000012937 correction Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000002950 deficient Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000010292 electrical insulation Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- 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
- H01B13/02—Stranding-up
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
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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
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
The invention relates to the technical field of cable production, in particular to a preparation method of an electric wire and a cable with high insulation performance, wherein a wire drawing machine draws a metal conductor into a metal wire with the thickness of 1-5 mm; heating the qualified drawn metal wire to 450-500 ℃, improving the toughness of the metal wire and reducing the strength of the metal wire in a recrystallization mode, and annealing the metal wire by an annealing furnace at the annealing temperature of 350-420 ℃ for 15-18min to prepare a single metal wire; concentric twisting is carried out on a plurality of single metal wires to form a conductive wire core, and the conductive wires are interweaved and compressed through a compression machine to form the wire core; extruding an electrical insulation layer on the outer surface of the wire core by an extruding machine; twisting the insulating layer wire core in a untwisting-free mode to form a cable, binding the cable after being cabled, and filling gaps of the cross section of the conductive wire core with a filler; directly extruding and wrapping the plastic sheath by using an extruder according to different requirements on the cable; the invention further improves the quality of the electric wires and cables.
Description
Technical Field
The invention relates to the technical field of cable production, in particular to a preparation method of a wire and cable with high insulation performance.
Background
With the rapid development of the wire and cable industry in China, the performance requirements of people on the wires and cables are higher and higher, and as the wires and cables are produced in a long-length continuous superposition combination mode, any one link in the production process can cause a problem instantly, and the quality of the whole cable can be influenced. Moreover, because the production of the electric wires and cables is different from the assembled products, the parts can be disassembled and replaced, and the quality problem of any part or process of the electric wires and cables can be hardly recovered and compensated for. Post processing is also quite negative, either sawing short or degrading, or scrapping the entire cable so that it is not lost.
The traditional wire and cable has poor insulating property and low preparation efficiency due to the defects of the manufacturing process, the occurrence of the problems of low quality inspection and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a preparation method of a wire and a cable with high insulation performance.
The invention solves the technical problems by adopting the following technical scheme:
a preparation method of a wire and cable with high insulation performance comprises the following steps:
step S1, a controller sets initial drawing force of a wire drawing machine according to the sectional area and the tensile strength of a metal conductor, the metal conductor is drawn into a metal wire with the diameter of 1-5mm, a diameter of the drawn metal wire is measured by a diameter measuring instrument, the diameter is compared with a standard diameter by the controller to judge whether the drawn metal wire meets the standard or not, and the drawing force of the wire drawing machine is corrected when the drawn metal wire does not meet the standard;
step S2, heating the qualified drawn metal wire to 450-500 ℃, improving the toughness of the metal wire and reducing the strength of the metal wire in a recrystallization mode, and annealing the metal wire by an annealing furnace at the annealing temperature of 350-420 ℃ for 15-18min to prepare a single metal wire;
s3, concentrically twisting a plurality of single metal wires to form a conductive wire core, and interweaving and compacting the conductive wires through a compacting machine to form the wire core;
s4, extruding an electric insulating layer on the outer surface of the wire core by the plastic extruding machine, acquiring an insulating layer wire core image after the extrusion is completed, which is shot by an industrial camera, comparing the image with an image standard to calculate a similarity value, judging whether the smoothness of the insulating layer wire core is qualified or not according to the comparison result of the similarity and the similarity standard, and re-determining the extrusion temperature of the plastic extruding machine if the smoothness is unqualified;
s5, when the controller judges that the smoothness of the insulating layer wire core is qualified, the controller determines the eccentricity of the insulating layer wire core, and compares the eccentricity with an eccentricity standard to determine the grade of the insulating layer wire core;
s6, twisting the insulating layer wire core in a untwisting-free mode to manufacture a cable, binding the cable after the cable is formed, and filling gaps of the cross section of the conductive wire core with a filler;
s7, directly extruding a plastic sheath by using an extruder according to different requirements on the cable;
wherein in the step S5, when determining that the level of the insulating layer core is N1, the controller determines the duty ratio Q of the N1 insulating layer core, and compares the duty ratio Q with a duty ratio standard Q b Comparing, judging whether the core of the insulating layer is qualified or not when the eccentricity grade is N1 according to the comparison result,
if Q is less than or equal to Q b The control ofJudging the wire core of the insulating layer as a qualified product;
if Q > Q b And the controller judges that the insulating layer wire core is a defective product.
In step S1, the initial drawing force of the wire drawing machine is F0, and f0=a is set a ×θ b X k, wherein F0 represents a drawing force, A a Represents the cross-sectional area, θ, of the metal conductor b For the tensile strength of the metal conductor, k represents the integrated correction factor.
And the controller obtains the diameter D of the metal wire detected by the diameter measuring instrument, compares the diameter D with the standard diameter D1, determines whether the diameter of the metal wire reaches the standard according to the comparison result,
if D is less than or equal to D1, the controller judges that the diameter of the metal wire reaches the standard;
if D is more than D1, the controller judges that the diameter of the metal wire does not reach the standard.
When the controller judges that the diameter of the metal wire does not reach the standard, calculating a diameter difference delta D between the diameter of the metal wire and the standard diameter, setting delta D=D-D1, comparing the diameter difference with the standard diameter difference, and correcting the drawing force of the wire drawing machine according to the comparison result, wherein the first diameter difference is delta D1, the second diameter difference is delta D2, the first correction coefficient is x1, the second correction coefficient is x2, the third correction coefficient is x3, delta D1 < [ delta D2 ], 1 < x2 < x3 < 1.2,
if delta D is less than or equal to delta D1, the controller determines to select a first correction coefficient x1 to correct the drawing force of the wire drawing machine;
if delta D1 is less than delta D2, the controller determines to select a second correction coefficient x2 to correct the drawing force of the wire drawing machine;
if delta D > -delta D2, the controller determines to select a third correction coefficient x3 to correct the drawing force of the wire drawing machine;
when the drawing force correction coefficient of the wire drawing machine is determined to be xi, i=1, 2 and 3, the drawing force of the corrected wire drawing machine is set to be F1, f1=f0×xi, wherein F0 is the initial drawing force of the wire drawing machine, and xi is the drawing force correction coefficient of the wire drawing machine.
In step S4, the controller compares the image with an image standard to calculate a similarity value, compares the similarity S with a similarity standard S1, determines whether the smoothness of the insulating layer core is acceptable according to the comparison result,
if S is less than S1, the controller judges that the smoothness of the insulating layer wire core is unqualified;
and if S is more than or equal to S1, the controller judges that the smoothness of the insulating layer wire core is qualified.
And when the controller judges that the smoothness of the insulating layer core is unqualified, the controller calculates a similarity difference delta S between the similarity S and a similarity standard S1, sets delta S=S-S1, compares the similarity difference with a similarity difference threshold, determines the temperature of the extruder according to the comparison result, wherein the first similarity difference threshold is delta S1, the second similarity difference threshold is delta S2, the first temperature is T1, the second temperature is T2, the third temperature is T3, delta S1 < [ delta S2, T1 < T2 < T3,
if DeltaS is less than or equal to DeltaS 1, the controller determines that the temperature of the extruder is T3;
if DeltaS 1 < DeltaSis less than or equal to DeltaS 2, the controller determines the temperature of the extruder to be T2;
if ΔS > ΔS2, the controller determines the temperature of the extruder as T1.
Further, in the step S5, when the controller determines that the smoothness of the insulating layer core is acceptable, the controller calculates the eccentricity V of the insulating layer core, and sets
Wherein h is max Represents the maximum value of the thickness of the insulating layer wire core, h min Represents the minimum thickness of the insulating layer wire core, h b The standard thickness value is shown.
Moreover, the controller combines the eccentricity V with an eccentricity standard V b Performing comparisonDetermining the grade of the insulating layer wire core according to the comparison result,
if V is less than V b The controller judges that the grade of the insulating layer wire core is N2;
if V is greater than or equal to V b The controller judges that the grade of the insulating layer wire core is N1;
when the eccentricity grade is N2, the insulating layer wire core is a high-quality product.
And when the eccentricity level is N1, the controller determines the ratio Q of the N1 insulating layer core, and sets
Wherein Q is 0 Represents the number of insulating layer cores with the eccentricity grade of N1, Q z Representing the total number of the detected insulating layer cores, the occupation ratio Q is compared with the occupation ratio standard Q b Comparing, judging whether the core of the insulating layer is qualified or not when the eccentricity grade is N1 according to the comparison result,
if Q is less than or equal to Q b The controller judges that the insulating layer wire core is a qualified product;
if Q > Q b And the controller judges that the insulating layer wire core is a defective product.
The invention has the advantages and positive effects that:
according to the invention, the sectional area and the tensile strength of the metal conductor are obtained to characterize the initial drawing force of the wire drawing machine, whether the wire drawn by the wire drawing machine meets the standard is determined according to the comparison result of the diameter of the wire detected by the diameter measuring instrument and the standard diameter, and the drawing force of the wire drawing machine is corrected according to the difference value of the diameter and the standard diameter when the wire drawn by the wire drawing machine does not meet the standard, so that the drawn wire meets the requirement of cable molding, and the preparation quality of the electric wire and the cable is improved.
According to the invention, the wire core is insulated and extruded through the extruder, the extruded insulating layer wire core is shot through the industrial camera, the similarity value of the shot image and the image standard is calculated, the similarity value is compared with the similarity standard to judge whether the image reaches the smoothness in the image standard, when the smoothness of the insulating layer wire core is unqualified, the temperature of the extruder is regulated according to the similarity difference value, and the surface smoothness of the insulating layer wire core is improved by increasing the temperature of the extruder, so that the quality of wires and cables is improved, and the process efficiency is further improved.
When the surface smoothness of the insulating layer wire cores is qualified, the eccentricity is represented by the maximum value and the minimum value of the thickness of the insulating layer wire cores, and the grade of the insulating layer wire cores is further represented, so that whether the batch of insulating layer wire cores are high-quality products or not is judged, and the quality of wires and cables is further improved.
When the insulation layer wire core is determined to be not a good quality product, the invention performs sampling inspection on the batch of insulation layer wire cores, determines the proportion of the disqualified products detected by sampling, compares the proportion with the proportion standard, further determines whether the batch of insulation layer wire cores are qualified products, and when the proportion of the disqualified insulation layer wire cores is greater than the proportion standard, determines that the batch of insulation layer wire cores are disqualified products, thereby further improving the quality of wires and cables.
Drawings
Fig. 1 is a flowchart of a method for manufacturing a wire and cable with high insulation performance according to the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are intended to be illustrative only and not limiting in any way.
A preparation method of a wire and cable with high insulation performance comprises the following steps:
step S1, a controller sets initial drawing force of a wire drawing machine according to the sectional area and the tensile strength of a metal conductor, the metal conductor is drawn into a metal wire with the diameter of 1-5mm, a diameter of the drawn metal wire is measured by a diameter measuring instrument, the diameter is compared with a standard diameter by the controller to judge whether the drawn metal wire meets the standard or not, and the drawing force of the wire drawing machine is corrected when the drawn metal wire does not meet the standard;
step S2, heating the qualified drawn metal wire to 450-500 ℃, improving the toughness of the metal wire and reducing the strength of the metal wire in a recrystallization mode, and annealing the metal wire by an annealing furnace at the annealing temperature of 350-420 ℃ for 15-18min to prepare a single metal wire;
s3, concentrically twisting a plurality of single metal wires to form a conductive wire core, and interweaving and compacting the conductive wires through a compacting machine to form the wire core;
s4, extruding an electric insulating layer on the outer surface of the wire core by the plastic extruding machine, acquiring an insulating layer wire core image after the extrusion is completed, which is shot by an industrial camera, comparing the image with an image standard to calculate a similarity value, judging whether the smoothness of the insulating layer wire core is qualified or not according to the comparison result of the similarity and the similarity standard, and re-determining the extrusion temperature of the plastic extruding machine if the smoothness is unqualified;
s5, when the controller judges that the smoothness of the insulating layer wire core is qualified, the controller determines the eccentricity of the insulating layer wire core, and compares the eccentricity with an eccentricity standard to determine the grade of the insulating layer wire core;
s6, twisting the insulating layer wire core in a untwisting-free mode to manufacture a cable, binding the cable after the cable is formed, and filling gaps of the cross section of the conductive wire core with a filler;
and S7, directly extruding the plastic sheath by using an extruder according to different requirements on the cable.
In step S1, the initial drawing force of the wire drawing machine is F0, and f0=a is set a ×θ b X k, wherein F0 represents a drawing force, A a Represents the cross-sectional area (m) 2 )，θ b The tensile strength (MPa) of the metal conductor, k represents the integrated correction factor.
Wherein,
d 2 representing the diameter (mm) of the metal conductor, the comprehensive correction coefficient k varies with the model of the wire drawing machineAnd (5) melting.
The controller obtains the diameter D of the metal wire detected by the diameter measuring instrument, compares the diameter D with the standard diameter D1, determines whether the diameter of the metal wire reaches the standard according to the comparison result,
if D is less than or equal to D1, the controller judges that the diameter of the metal wire reaches the standard;
if D is more than D1, the controller judges that the diameter of the metal wire does not reach the standard.
In the embodiment of the invention, the standard diameter of the metal wire drawn by the wire drawing machine is 1-5mm.
When the controller judges that the diameter of the metal wire does not reach the standard, calculating a diameter difference delta D between the diameter of the metal wire and the standard diameter, setting delta D=D-D1, comparing the diameter difference with the standard diameter difference, correcting the drawing force of the wire drawing machine according to the comparison result, wherein the first diameter difference is delta D1, the second diameter difference is delta D2, the first correction coefficient is x1, the second correction coefficient is x2, the third correction coefficient is x3, delta D1 < [ delta ] D2,1 < x2 < x3 < 1.2,
if delta D is less than or equal to delta D1, the controller determines to select a first correction coefficient x1 to correct the drawing force of the wire drawing machine;
if delta D1 is less than delta D2, the controller determines to select a second correction coefficient x2 to correct the drawing force of the wire drawing machine;
if delta D > -delta D2, the controller determines to select a third correction coefficient x3 to correct the drawing force of the wire drawing machine;
when the drawing force correction coefficient of the wire drawing machine is determined to be xi, i=1, 2 and 3, the drawing force of the corrected wire drawing machine is set to be F1, f1=f0×xi, wherein F0 is the initial drawing force of the wire drawing machine, and xi is the drawing force correction coefficient of the wire drawing machine.
In the step S4, the controller compares the image with an image standard to calculate a similarity value, compares the similarity S with a similarity standard S1, determines whether the smoothness of the insulating layer core is acceptable according to the comparison result,
if S is less than S1, the controller judges that the smoothness of the insulating layer wire core is unqualified;
and if S is more than or equal to S1, the controller judges that the smoothness of the insulating layer wire core is qualified.
When the controller judges that the smoothness of the insulating layer wire core is unqualified, the controller calculates a similarity difference delta S between the similarity S and a similarity standard S1, sets delta S=S-S1, compares the similarity difference with a similarity difference threshold, determines the temperature of the plastic extruding machine according to the comparison result, wherein the first similarity difference threshold is delta S1, the second similarity difference threshold is delta S2, the first temperature is T1, the second temperature is T2, the third temperature is T3, delta S1 < [ delta ] S2, T1 < T2 < T3,
if DeltaS is less than or equal to DeltaS 1, the controller determines that the temperature of the extruder is T3;
if DeltaS 1 < DeltaSis less than or equal to DeltaS 2, the controller determines the temperature of the extruder to be T2;
if ΔS > ΔS2, the controller determines the temperature of the extruder as T1.
When the temperature of the extruder is lower, local cold glue is generated in the extruder, and the surface of the insulated extruded insulated layer wire core is uneven.
In the step S5, when the controller determines that the smoothness of the insulating layer core is acceptable, the controller calculates the eccentricity V of the insulating layer core, and sets
Wherein h is max Represents the maximum value of the thickness of the insulating layer wire core, h min Represents the minimum thickness of the insulating layer wire core, h b The standard thickness value is shown.
The controller is used for controlling the eccentricity V and the eccentricity standard V b Comparing, determining the grade of the insulating layer wire core according to the comparison result,
if V is less than V b The controller judges that the grade of the insulating layer wire core is N2;
if V is greater than or equal to V b The controller judges that the grade of the insulating layer wire core is N1;
when the eccentricity grade is N2, the insulating layer wire core is a high-quality product.
When the eccentricity grade is N1, the controller determines the occupancy rate Q of the N1 insulating layer wire core, and sets
Wherein Q is 0 Represents the number of insulating layer cores with the eccentricity grade of N1, Q z Representing the total number of the detected insulating layer cores, the occupation ratio Q is compared with the occupation ratio standard Q b Comparing, judging whether the core of the insulating layer is qualified or not when the eccentricity grade is N1 according to the comparison result,
if Q is less than or equal to Q b The controller judges that the insulating layer wire core is a qualified product;
if Q > Q b And the controller judges that the insulating layer wire core is a defective product.
In the embodiment of the invention, when the eccentricity is less than 15%, the insulating layer wire core is a high-quality product, when the eccentricity is more than or equal to 15%, the occupation ratio of the insulating layer wire core needs to be calculated, if the occupation ratio is not more than 25%, the insulating layer wire core is a qualified product, and if the occupation ratio is more than 25%, the insulating layer wire core is a disqualified product.
Although embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments.
Claims (9)
1. A preparation method of a wire and cable with high insulation performance is characterized by comprising the following steps: the method comprises the following steps:
step S1, a controller sets initial drawing force of a wire drawing machine according to the sectional area and the tensile strength of a metal conductor, the metal conductor is drawn into a metal wire with the diameter of 1-5mm, a diameter of the drawn metal wire is measured by a diameter measuring instrument, the diameter is compared with a standard diameter by the controller to judge whether the drawn metal wire meets the standard or not, and the drawing force of the wire drawing machine is corrected when the drawn metal wire does not meet the standard;
step S2, heating the qualified drawn metal wire to 450-500 ℃, improving the toughness of the metal wire and reducing the strength of the metal wire in a recrystallization mode, and annealing the metal wire by an annealing furnace at the annealing temperature of 350-420 ℃ for 15-18min to prepare a single metal wire;
s3, concentrically twisting a plurality of single metal wires to form a conductive wire core, and interweaving and compacting the conductive wires through a compacting machine to form the wire core;
s4, extruding an electric insulating layer on the outer surface of the wire core by the plastic extruding machine, acquiring an insulating layer wire core image after the extrusion is completed, which is shot by an industrial camera, comparing the image with an image standard to calculate a similarity value, judging whether the smoothness of the insulating layer wire core is qualified or not according to the comparison result of the similarity and the similarity standard, and re-determining the extrusion temperature of the plastic extruding machine if the smoothness is unqualified;
s5, when the controller judges that the smoothness of the insulating layer wire core is qualified, the controller determines the eccentricity of the insulating layer wire core, and compares the eccentricity with an eccentricity standard to determine the grade of the insulating layer wire core;
s6, twisting the insulating layer wire core in a untwisting-free mode to manufacture a cable, binding the cable after the cable is formed, and filling gaps of the cross section of the conductive wire core with a filler;
s7, directly extruding a plastic sheath by using an extruder according to different requirements on the cable;
wherein in the step S5, when determining that the level of the insulating layer core is N1, the controller determines the duty ratio Q of the N1 insulating layer core, and compares the duty ratio Q with a duty ratio standard Q b Comparing, judging whether the core of the insulating layer is qualified or not when the eccentricity grade is N1 according to the comparison result,
if Q is less than or equal to Q b The controller judges that the insulating layer wire core is a qualified product;
if Q > Q b And the controller judges that the insulating layer wire core is a defective product.
2. The method for manufacturing a wire and cable having high insulation performance according to claim 1, wherein: in step S1, the initial drawing force of the wire drawing machine is F0, and f0=a is set a ×θ b X k, wherein F0 represents a drawing force, A a Represents the cross-sectional area, θ, of the metal conductor b For the tensile strength of the metal conductor, k represents the integrated correction factor.
3. The method for manufacturing a wire and cable having high insulation performance according to claim 2, wherein: the controller obtains the diameter D of the metal wire detected by the diameter measuring instrument, compares the diameter D with the standard diameter D1, determines whether the diameter of the metal wire reaches the standard according to the comparison result,
if D is less than or equal to D1, the controller judges that the diameter of the metal wire reaches the standard;
if D is more than D1, the controller judges that the diameter of the metal wire does not reach the standard.
4. A method for producing an electric wire and cable having high insulation properties according to claim 3, wherein: when the controller judges that the diameter of the metal wire does not reach the standard, calculating a diameter difference delta D between the diameter of the metal wire and the standard diameter, setting delta D=D-D1, comparing the diameter difference with the standard diameter difference, correcting the drawing force of the wire drawing machine according to the comparison result, wherein the first diameter difference is delta D1, the second diameter difference is delta D2, the first correction coefficient is x1, the second correction coefficient is x2, the third correction coefficient is x3, delta D1 < [ delta ] D2,1 < x2 < x3 < 1.2,
if delta D is less than or equal to delta D1, the controller determines to select a first correction coefficient x1 to correct the drawing force of the wire drawing machine;
if delta D1 is less than delta D2, the controller determines to select a second correction coefficient x2 to correct the drawing force of the wire drawing machine;
if delta D > -delta D2, the controller determines to select a third correction coefficient x3 to correct the drawing force of the wire drawing machine;
when the drawing force correction coefficient of the wire drawing machine is determined to be xi, i=1, 2 and 3, the drawing force of the corrected wire drawing machine is set to be F1, f1=f0×xi, wherein F0 is the initial drawing force of the wire drawing machine, and xi is the drawing force correction coefficient of the wire drawing machine.
5. The method for manufacturing a wire and cable having high insulation properties according to claim 4, wherein: in the step S4, the controller compares the image with an image standard to calculate a similarity value, compares the similarity S with a similarity standard S1, determines whether the smoothness of the insulating layer core is acceptable according to the comparison result,
if S is less than S1, the controller judges that the smoothness of the insulating layer wire core is unqualified;
and if S is more than or equal to S1, the controller judges that the smoothness of the insulating layer wire core is qualified.
6. The method for manufacturing a wire and cable having high insulation performance according to claim 5, wherein: when the controller judges that the smoothness of the insulating layer wire core is unqualified, the controller calculates a similarity difference delta S between the similarity S and a similarity standard S1, sets delta S=S-S1, compares the similarity difference with a similarity difference threshold, determines the temperature of the plastic extruding machine according to the comparison result, wherein the first similarity difference threshold is delta S1, the second similarity difference threshold is delta S2, the first temperature is T1, the second temperature is T2, the third temperature is T3, delta S1 < [ delta ] S2, T1 < T2 < T3,
if DeltaS is less than or equal to DeltaS 1, the controller determines that the temperature of the extruder is T3;
if DeltaS 1 < DeltaSis less than or equal to DeltaS 2, the controller determines the temperature of the extruder to be T2;
if ΔS > ΔS2, the controller determines the temperature of the extruder as T1.
7. The method for manufacturing a wire and cable having high insulation properties according to claim 6, wherein: in the step S5, when the controller determines that the smoothness of the insulating layer core is acceptable, the controller calculates the eccentricity V of the insulating layer core, and sets
Wherein h is max Represents the maximum value of the thickness of the insulating layer wire core, h min Represents the minimum thickness of the insulating layer wire core, h b The standard thickness value is shown.
8. The method for manufacturing a wire and cable having high insulation properties according to claim 7, wherein: the controller is used for controlling the eccentricity V and the eccentricity standard V b Comparing, determining the grade of the insulating layer wire core according to the comparison result,
if V is less than V b The controller judges that the grade of the insulating layer wire core is N2;
if V is greater than or equal to V b The controller judges that the grade of the insulating layer wire core is N1;
when the eccentricity grade is N2, the insulating layer wire core is a high-quality product.
9. The method for manufacturing a wire and cable having high insulation performance according to claim 8, wherein: when the eccentricity grade is N1, the controller determines the occupancy rate Q of the N1 insulating layer wire core, and sets
Wherein Q is 0 Represents the number of insulating layer cores with the eccentricity grade of N1, Q z Representing the total number of detected insulating layer cores, the ratio Q is compared withDuty ratio standard Q b Comparing, judging whether the core of the insulating layer is qualified or not when the eccentricity grade is N1 according to the comparison result,
if Q is less than or equal to Q b The controller judges that the insulating layer wire core is a qualified product;
if Q > Q b And the controller judges that the insulating layer wire core is a defective product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311246927.9A CN117373745A (en) | 2023-09-26 | 2023-09-26 | Preparation method of electric wire and cable with high insulation performance |
Applications Claiming Priority (1)
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| CN118335424A (en) * | 2024-06-17 | 2024-07-12 | 嘉兴翼波电子有限公司 | Cable manufacturing method for sealed connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118335424A (en) * | 2024-06-17 | 2024-07-12 | 嘉兴翼波电子有限公司 | Cable manufacturing method for sealed connector |
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