CN109448910A - A kind of low noise Low temperature-resistanflexible flexible cable and its production technology - Google Patents
A kind of low noise Low temperature-resistanflexible flexible cable and its production technology Download PDFInfo
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- CN109448910A CN109448910A CN201811584304.1A CN201811584304A CN109448910A CN 109448910 A CN109448910 A CN 109448910A CN 201811584304 A CN201811584304 A CN 201811584304A CN 109448910 A CN109448910 A CN 109448910A
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- core
- insulated wire
- pair twist
- inner core
- wire cores
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—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
- 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
- H01B13/22—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
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/08—Several wires or the like stranded in the form of a rope
-
- 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
- H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped 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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer sheath
Abstract
The invention discloses a kind of low temperature resistant low noise flexible cables, including stranding inner core and cable periphery；Stranding inner core, including at least three pair twist cores and puigging；Pair twist core is formed by two about insulated wire cores pair twist substantially symmetrical about its central axis, and the pair twist pitch of each pair twist core is different；Insulated wire cores include the conductor inner core being entwined by more ultra-fine conductors and are coated on outer PTFE insulating layer；Puigging includes the semiconducting fibers being filled between each pair twist core；Cable periphery includes anti-interference layer and oversheath；Anti-interference layer includes the anti-electromagnetic wave mesh grid for being coated on stranding inner core periphery；Oversheath is coated on anti-interference layer periphery, uses PTFE isolation protective material.Its production technology includes that coiled conductor inner core, wrapped, sintering seamless to conductor inner core wrapped and sintering of melting that insulated wire cores are made in envelope, back twist forms pair twist core, back twist stranding, filling semiconducting fibers, the anti-interference layer of braiding, oversheath insulate melt envelope oversheath are made.
Description
Technical field
The invention belongs to field of cable technology, and in particular to a kind of low noise Low temperature-resistanflexible flexible cable and its production technology.
Background technique
With the raising of the fields such as industry, medical treatment machinery equipment the degree of automation, especially liquid oxygen (- 180 DEG C), liquid nitrogen (-
260 DEG C), liquid hydrogen (- 250 DEG C), the related applications such as ultravacuum Health Service Laboratory (- 200 DEG C) technical field, used in letter
Number transmission, detection and control operation etc. function devices to electric energy conduction, signal propagate and Electrical Safety required it is higher
Stability, especially the softness requirement to cable at low ambient temperatures, low noise requirement inside cable when work, outside cable
The requirement of portion's interference free performance.
The technical requirements of high-end devices promote the research and development and progress of field of cables, also have cable companies investment to grind in the world
It sends out product such, but up to now, there is flexible cable cannot either work at low ambient temperatures or the very big shadow of noise
Ringing the cable of signal transmission perhaps low noise, it is heavy and be short of pliability and the work or can of cannot being on active service at low temperature
Put into the property that in low-temperature working but its hard is easily broken limit high-end technology performance or noise it is too big and influence signal
Conduction.
Summary of the invention
It is existing the invention aims to solve to control in the high-end technical equipment such as equipment for Medical Devices, precision
Signal conductive cable has not been able to have both good flexible, the low temperature resistant and big advantage of low noise three simultaneously and reaches technical indicator, no
A kind of the technical issues of being able to satisfy the requirement of certain high-end technology equipment, it is desirable to provide low temperature resistant low noise flexible cable.
To solve the above-mentioned problems, the present invention is achieved by following technical scheme: one kind of the present invention is resistance to low
Warm low noise flexible cable, comprising:
Stranding inner core comprising at least three pair twist cores and puigging；Pair twist core is by two about substantially symmetrical about its central axis
Insulated wire cores pair twist formed, and the pair twist pitch of each pair twist core is different；The insulated wire cores include ultra-fine being led by more
The conductor inner core that body is entwined and the PTFE insulating layer for being coated on conductor inner core periphery；The puigging includes being filled in each item
Semiconducting fibers between pair twist core；
With cable periphery comprising anti-interference layer and oversheath；The anti-interference layer is coated on stranding inner core periphery
Anti-electromagnetic wave mesh grid；The oversheath is coated on anti-interference layer periphery, uses PTFE isolation protective material.
Preferably, the inverse difference of every pair twist core pair twist pitch is approximately equal.Each pair twist group (i.e. two insulated wires
Core is a pair twist group) pitch it is different, poor approximately equal, the such structure setting energy of the inverse of the pair twist pitch of each pair twist group
It is enough that so that manufactured cable effectively avoids, the signal between each pair twist group is interfered with each other or cross-talk, the stabilization signal for reaching high quality pass
It is defeated.
Preferably, the PTFE insulating layer of the insulated wire cores is three layers of PTFE semi-directional band through seamless wrapped and sintering
Melt Feng Ercheng, every layer of wrapped overlap rate of PTFE semi-directional band is 45%~60%, and especially internal layer PTFE semi-directional band is wrapped takes
Lid rate is 50%, and the middle layer wrapped overlap rate of PTFE semi-directional band is 52%, and the outer layer wrapped overlap rate of PTFE semi-directional band is 54%.
Thermoplastic used in insulated wire cores in cable of the present invention, insulating layer and traditional flexible cable or low noise cable
Property elastic body insulated or polyethylene, polyvinyl chloride etc. to squeeze out insulation system different, but use resistance electrical property, high temperature performance,
The splendid PTFE of surface lubrication performance carries out lapped insulation, its advantage is that, coefficient of friction is almost between insulating layer and conductor
Zero, when insulated wire cores bend, so that insulating materials is kept synchronous substantially with the deformation of copper conductor, reduce conductor
The alternate stress being subject to when deformation is to fatigue limit hereinafter, avoiding the generation of conductor such as copper wire crack conditions.The bending structure
Insulated wire cores, bending radius Ke Da≤2* outer diameter, even if bending radius is still up to 2.5* outer diameter under -200 DEG C of low temperature.Bending
Number is greater than 40,000,000 circulations, and 30,000,000 circulations can be greater than the number of bends under -200 DEG C of low temperature.
Preferably, the oversheath melts Feng Ercheng through seamless wrapped and sintering for three layers of PTFE semi-directional band, often
It is 50% that the layer wrapped overlap rate of PTFE semi-directional band, which is 45%~60%, the especially wrapped overlap rate of internal layer PTFE semi-directional band,
The middle layer wrapped overlap rate of PTFE semi-directional band is 52%, and the outer layer wrapped overlap rate of PTFE semi-directional band is 54%.The oversheath
It is approximate with material used by the PTFE insulating layer of insulated wire cores and around packet mode, difference be oversheath be in cable outside
Layer, needs to play cable the protective effects such as wear-resisting, tension, therefore PTFE semi-directional band is than insulated wire cores used by oversheath
PTFE semi-directional band used by PTFE insulating layer is thicker more wear resistant.
Preferably, the conductor inner core by more ultra-fine conductors, with a fixed pitch, make clockwise by winding
At；The ultra-fine conductor uses diameter of section for the ultra-fine copper alloy conductor of 0.05~0.1mm.Its advantage is that flexibility is good, circle
Whole to spend, bending property is splendid, is bent radius Ke Da≤2*OD, dynamic bending Ci Shuo≤30,000,000 time is without fracture of wire.
Preferably, the anti-electromagnetic wave mesh grid uses diameter of section to lead for the ultra-fine silver-plated copper of 0.02~0.1mm
Body simultaneously weaves in such a way that plum blossom is intersected.It forms the double of cable of the present invention with the semiconducting fibers in stranding inner core
Layer acoustical layer structure；Interference of the external electromagnetic wave to cable can also be shielded, and its netted structure can keep the soft of cable
It is soft.
Preferably, uniformly filled using four pair twist cores, and between every two pair twist cores 5~15 1200~
The semiconducting fibers of 2000dtex are as puigging.The puigging of stranding inner core, Er Qietong is integrally formed in multiple groups semiconducting fibers
The filling for crossing semiconducting fibers can be such that stranding core arrangement stablizes；Secondly, semiconducting fibers form low-resistance outside insulated wire cores
Anti- conductive path can effectively shift charge present in cable built-in electrical insulation material.The sheet resistance of semiconducting fibers layer
Rate is 1.8*10-3Ω * cm, so that cable overall structure can be 300 times by lower noise, while semiconducting fibers layer can
External electromagnetic wave is shielded to avoid the influence to cable transmission signal；And semiconducting fibers layer can low temperature to -180 DEG C~-
Its flexibility and electric conductivity are still maintained within the scope of 260 DEG C, therefore use sound insulation of the semiconducting fibers material as stranding inner core
Layer can also greatly improve the mechanical performance and resistance to low temperature of Integral cable.Semiconducting fibers filled layer (the i.e. stranding simultaneously
The puigging of inner core) and anti-interference layer formation conducting relationship, play the effect of the double-deck sound insulation.
Preferably, the PTFE semi-directional band that the PTFE insulating layer of the insulated wire cores uses, degree of orientation 1.2-
1.4, with a thickness of 0.05~0.1mm；The PTFE semi-directional band that the oversheath uses, degree of orientation 1.2-1.4, thickness
For 0.05~0.1mm.The nature parameters of used PTFE semi-directional band count the preferred side obtained by many experiments
Case.
A kind of production technology of low temperature resistant low noise flexible cable, which comprises the following steps:
S1, coiled conductor inner core, by several ultra-fine conductors with 5-15 times of size of the insulated wire cores outer diameter for one
Pitch winds the conductor inner core that insulated wire cores are made in the direction of the clock；
It is S2, seamless to conductor inner core wrapped, by PTFE insulating layer by it is accurate it is seamless around packet technology round conductor inner core
Wrapped 3 layers of periphery, every layer of wrapped overlap rate of PTFE semi-directional band is that the wrapped overlap rate of 45%~60%, especially internal layer is
50%, the wrapped overlap rate in middle layer is 52%, and the wrapped overlap rate of outer layer is 54%；
S3, sintering melt envelope and insulated wire cores are made, and form insulated wire cores being sintered to melt to seal at 350~400 DEG C
PTFE insulating layer；
S4, back twist form pair twist core, are 30%~40% back twist rate by the output identical tension debugging of pair twister, with insulation
8-16 times of size of core outer diameter is a pitch, and two insulated wire cores are carried out pair twist using pair twister；
S5, back twist stranding, the back twist rate for being 30%~40% by cable-former debugging, using cable-former by each pair twist core
Back twist stranding is carried out, so that the pitch of each pair twist core is constant after stranding；
S6, filling semiconducting fibers in gap when stranding between adjacent pair twist core, fill semiconducting fibers system
At the puigging of stranding inner core, and semiconducting fibers form low-impedance conductive path outside insulated wire cores；
S7, the anti-interference layer of braiding surround anti-electromagnetic wave using more ultra-fine silver-plated copper conductor braidings in puigging periphery and compile
Knitmesh；
S8, oversheath isolation protective material are wrapped, and PTFE isolation protective material is enclosed by the seamless of precision around packet technology
Wrapped 3 layers of the periphery of anti-interference layer, every layer of wrapped overlap rate of PTFE semi-directional band be that 45%~60%, especially internal layer are wrapped
Overlap rate is 50%, and the wrapped overlap rate in middle layer is 52%, and the wrapped overlap rate of outer layer is 54%；
S9, sintering melt envelope and the oversheath of cable periphery are made, and are sintered at 350~400 DEG C and melt envelope and formed outside cable
The oversheath enclosed.
Further, during step S4 back twist forms pair twist core, it is to the rotation of each single insulated wire cores plus torsion rate
Zero, the uniform tension in order being applied in two insulated wire cores, so that back twist pair twist process, two complete phases of insulated wire cores crooked radian
With to cause two insulated wire cores in pair twist core about pair twist pitch substantially symmetrical about its central axis, and being adjusted to each pair twist core
Twisted pair wire return loss is effectively reduced in difference.
Compared with prior art, the beneficial effects of the present invention are:
1, the oversheath in PTFE insulating layer and the cable periphery of insulated wire cores is all made of PTFE isolation protective material, no
Only superior bending property and electrical insulation capability, and its dielectric constant from -200 DEG C~-260 DEG C and from 50Hz to
1010Hz hyperfrequency it is a wide range of interior almost unchanged；Secondly, its dielectric constant than other similar existing cable will be low, only
Be 2.1 or so, and dielectric loss factor is ultralow, using it is seamless wrapped and through sintering melt envelope, can sintering when exclude insulate
Layer conductor between air, the signal transmission medium of guarantee it is uniform so that such cable declines for signal transmission to be only minimum
Subtract, or even there is no signals to decay；Then, the outer diameter of cable folding bending radius Ke Da≤2* cable, even if at -200 DEG C
Bending radius bends number and is greater than 40,000,000 circulations up to 2.5* outer diameter under low temperature, even if in -200 DEG C of bending at low temperatures, it is curved
Bent number can also be greater than 30,000,000 circulations；Moreover, the coefficient of friction of PTFE insulating layer is only 0.08, therefore its own has
Fabulous self-lubricating property, the friction noise generated between medium when greatly reducing cable bend.
2, it using semiconducting fibers and is coated on the anti-electromagnetic wave mesh grid of stranding inner core periphery and forms the double-deck sound-insulating structure,
Enable cable to reduce by 300 times of noise than common analogous cable, functions simultaneously as the shielding ring wall of external electromagnetic wave, effectively
It blocks external electromagnetic wave to enter cable, is impacted to avoid the transmission signal to cable.
3, during back twist forms pair twist core, it is zero to the rotation of each single insulated wire cores plus torsion rate, is applied to two
Tension needs in insulated wire cores are constant and consistent, so that two insulated wire cores crooked radians of back twist pair twist process are identical,
To cause to two insulated wire cores being twisted into pair twist group after line (i.e. two insulated wire cores are a pair twist group) about center
Axial symmetry, the central axis are longitudinally central axis between two insulated wire cores, i.e., from the Single port of two insulated wire cores carry over to
The central axis of another port can be effectively reduced twisted pair wire return loss so that manufactured cable effectively avoid it is each right
Signal between strand group interferes with each other or cross-talk, reaches the stabilization signal transmission of high quality.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is the structural schematic diagram of cable of the present invention；
Fig. 2 is the process flow of cable of the present invention；
In figure:
1000 stranding inner cores；
1100 pair twist cores；
1110 insulated wire cores；
1111 PTFE insulating layers；
1112 conductor inner cores；
1200 puiggings；
2000 cables periphery；
2100 anti-interference layers；
2200 oversheaths.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As shown in Figure 1, a kind of low temperature resistant low noise flexible cable of the present invention, comprising: stranding inner core 1000 and electricity
Cable periphery 2000；
Stranding inner core 1000 includes at least three pair twist cores 1100 and puigging 1200；In preferably,
Using four pair twist cores 1100, two are a column, and two column pair twist cores, 1100 its entirety is in cross arrangement inside cable；
Each pair twist core 1100 is formed by two about 1110 pair twist of insulated wire cores substantially symmetrical about its central axis, especially with identical tension by two
1110 back twist pair twist of root insulated wire cores forms, and the pair twist pitch of each pair twist core 1100 is different；Further, every pair twist
The pair twist pitch of core 1100 inverse difference it is approximately equal, thus interfering with each other between effectively avoiding each pair twist core 1100 and
Cross-talk reaches signal transmission and stablizes clear and accurate high quality effect；Pair twist core 1100 is moved back by two insulated wire cores 1110
Pair twist is turned round to be formed.
Insulated wire cores 1110 include the conductor inner core 1112 being entwined by more ultra-fine conductors and are coated on conductor inner core
The PTFE insulating layer 1111 of 1112 peripheries；
In preferably, conductor inner core 1112 is square clockwise with a fixed pitch by more ultra-fine conductors
It is made to winding, further, ultra-fine conductor uses diameter of section for the ultra-fine copper alloy conductor of 0.05~0.1mm, winding section
Away from 5~15 times of sizes for 1110 outer diameter of insulated wire cores, one of be preferably implemented in test selects 26 satisfaction " VDE
0259CLASS6 " desired diameter of section be 0.08mm ultra-fine copper alloy conductor, with 10 times of 1110 outer diameter of insulated wire cores big
Small is a pitch, and the conductor inner core 1112 of insulated wire cores 1110 is made in winding in the direction of the clock；
And the insulating layer for being coated on 1112 periphery of conductor inner core then uses PTFE insulating materials, with superior bendability
Energy, electrical insulation capability and flexibility, in some preferred embodiments, the PTFE insulating layer 1111 of insulated wire cores 1110 are three
Layer PTFE semi-directional band melts Feng Ercheng through seamless wrapped and sintering, and every layer of wrapped overlap rate of PTFE semi-directional band be 45%~
60%, the especially wrapped overlap rate of internal layer PTFE semi-directional band are 50%, and the middle layer wrapped overlap rate of PTFE semi-directional band is 52%,
The outer layer wrapped overlap rate of PTFE semi-directional band is 54%, and at 350~400 DEG C, is especially sintered at a temperature of 370 DEG C
Melt envelope, achievees the purpose that insulated wire cores 1110 are made in insulation；Further, the PTFE insulating layer 1111 of insulated wire cores 1110 is adopted
PTFE semi-directional band, degree of orientation 1.2-1.4 show by testting experimental data with a thickness of 0.05~0.1mm,
The PTFE insulating layer 1111 of above-mentioned wrapped the formed insulated wire cores 1110 of sintering, it is soft, make into the insulated wire cores of line
1110 can be realized bending radius up to 2 times of outer diameter, and the coefficient of friction of PTFE insulating layer 1111 is only 0.08, weight bearing
2Mpa*30min, therefore its own has fabulous self-lubricating property, what is generated between medium when greatly reducing cable bend rubs
Rubbing noise.
Puigging 1200 in stranding inner core 1000 includes the semiconducting fibers being filled between each pair twist core 1100；
In preferably, using four groups of semiconducting fibers corresponding with four pair twist cores 1100, four groups of semiconductives are fine
Dimension is arranged in cross-shaped configuration similar with two column pair twist cores 1100, and four groups of semiconducting fibers are filled in four pair twists respectively
In gap between core 1100, one group of semiconductive is also filled in the gap that four pair twist cores 1100 are surrounded to the one end at center
Fiber is integrally formed the puigging 1200 of stranding inner core 1000, and can make stranding inner core by the filling of semiconducting fibers
1000 stable structure；Secondly, semiconducting fibers form low-impedance conductive path outside insulated wire cores 1110, can effectively shift
Charge present in cable built-in electrical insulation material.In further preferred embodiment, between every two pair twist cores 1100 uniformly
The semiconducting fibers of 5~15 1200~2000dtex are filled, especially fill 8 1600dtex semiconducting fibers, this is partly led
The surface resistivity of electric fibrous layer is 1.8*10-3Ω * cm, so that cable overall structure can be 300 times by lower noise, together
When semiconducting fibers layer can shield external electromagnetic wave to avoid the influence to cable transmission signal；In test cable flexibility side
In the experiment in face, it was confirmed that the semiconducting fibers layer can still maintain its flexibility within the scope of low temperature extremely -180 DEG C~-260 DEG C
And electric conductivity, therefore cable can also be greatly improved by using semiconducting fibers material as the puigging 1200 of stranding inner core 1000
Mechanical performance and resistance to low temperature.In other examples, the interstitital texture and quantity of semiconducting fibers can be according to electricity
The environmental requirement of military service work required for cable and it is customized.
Cable periphery 2000 comprising anti-interference layer 2100 and oversheath 2200；
Anti-interference layer 2100 is coated on the anti-electromagnetic wave mesh grid of 1000 periphery of stranding inner core, with stranding inner core
Semiconducting fibers in 1000 form 1200 structure of the double-deck puigging of cable of the present invention, at the same the anti-interference layer 2100 with
Semiconducting fibers filled layer forms conducting relationship, plays the effect of the double-deck sound insulation；In preferably, anti-electromagnetic wave is compiled
Knitmesh uses the ultra-fine silver-plated copper conductor that diameter of section is 0.05~0.1mm and weaves in such a way that plum blossom is intersected.One
A diameter of sections for selecting 128 satisfactions " VDE 0259CLASS6 " to require in test that are preferably implemented are the ultra-fine silver-plated of 0.05mm
Copper conductor weaves the periphery for being coated on stranding inner core 1000 in such a way that plum blossom is intersected.
Oversheath 2200 in cable periphery 2000 is coated on anti-interference 2100 periphery of layer, uses PTFE insulation protection material
Material.In preferably, oversheath 2200 melts Feng Ercheng through seamless excessively wrapped and sintering for three layers of PTFE semi-directional band,
Every layer of wrapped overlap rate of PTFE semi-directional band is that 45%~60%, the especially wrapped overlap rate of internal layer PTFE semi-directional band are
50%, the middle layer wrapped overlap rate of PTFE semi-directional band is 52%, and the outer layer wrapped overlap rate of PTFE semi-directional band is 54%；Further
, the PTFE semi-directional band that oversheath 2200 uses, degree of orientation 1.2-1.4, with a thickness of 0.05~0.1mm, at one
It is preferably implemented in test and selects Du Pont PTFE semi-directional band, degree of orientation 1.2-1.4, thickness uses 0.075mm, passes through precision
It is seamless around packet technology in 3 layers of 1000 periphery coiling of stranding inner core for being coated with anti-electromagnetic wave mesh grid, every layer of PTFE semi-directional band
Wrapped overlap rate is that the wrapped overlap rate of 45%~60%, especially internal layer is 50%, the wrapped overlap rate in middle layer be 52%, outer layer around
Packet overlap rate is 54%, and 350~400 DEG C especially at 380 DEG C at a temperature of be sintered and melt envelope, reach sealed insulation
Purpose.Since PTFE isolation material has perfect self-lubrication (coefficient of friction is only 0.08, and bear a heavy burden 2Mpa*30min), cable
The outermost layer of periphery 2000 is oversheath 2200, rubbing when can greatly reduce cable bend using PTFE isolation protective material
It wipes, to reduce noise caused by friction, while the structure of PTFE insulating outer protective cover 2200 makes cable remain flexibility.
Using the construction of cable in the embodiment above, the experiment proved that, by the cable folding, bending radius Ke Da≤2* electricity
The outer diameter of cable, even if bending radius bends number and is greater than 40,000,000 circulations up to 2.5* outer diameter under -200 DEG C of low temperature, even if
In -200 DEG C of bending at low temperatures, number of bends can also be greater than 30,000,000 circulations.
Secondly, the PTFE insulating layer 1111 of insulated wire cores 1110 and the oversheath 2200 in cable periphery 2000 use
PTFE isolation protective material, not only there is superior bending property and an electrical insulation capability, and its dielectric constant from -200 DEG C~-
260 DEG C and from 50Hz to 1010Hz hyperfrequency it is a wide range of interior almost unchanged, and dielectric constant is than other similar existing electricity
Cable will be low, only 2.1 or so, dielectric loss factor is ultralow, using seamless wrapped, can be excluded in sintering insulating layer with
Air between conductor, the signal transmission medium of guarantee it is uniform so that such cable for signal transmission only have minimum decaying, very
To there is no signals to decay.
The double-deck sound insulation knot is formed using semiconducting fibers and the anti-electromagnetic wave mesh grid for being coated on 1000 periphery of stranding inner core
Structure enables cable to reduce by 300 times of noise than common analogous cable, functions simultaneously as the shielding ring wall of external electromagnetic wave,
Effectively external electromagnetic wave is blocked to enter cable, is impacted to avoid the transmission signal to cable.
As shown in Fig. 2, a kind of production technology of low temperature resistant low noise flexible cable of the present invention, the structure of the cable
As described above, its production technology mainly comprises the steps that
S1, coiled conductor inner core 1112, by several ultra-fine conductors with the 5-15 times big of 1110 outer diameter of insulated wire cores
Small is that a pitch winds the conductor inner core 1112 that insulated wire cores 1110 are made in the direction of the clock；Preferably
In, with 10 times of sizes of 1110 outer diameter of insulated wire cores for a pitch.
It is S2, seamless to conductor inner core 1112 wrapped, by PTFE insulating layer 1111 by it is accurate it is seamless around packet technology round
Wrapped 3 layers of the periphery of conductor inner core 1112, every layer of wrapped overlap rate of PTFE semi-directional band be 45%~60%, especially internal layer around
Packet overlap rate is 50%, and the wrapped overlap rate in middle layer is 52%, and the wrapped overlap rate of outer layer is 54%；It needs during wrapped air
Effectively squeeze away, to guarantee that integral insulation core 1110 does not uniformly interfere with signal transmission；Preferably
In, material properties used by PTFE insulating layer 1111 is as described above.
S3, sintering melt envelope and insulated wire cores 1110 are made, and at 350~400 DEG C, are especially sintered at 370 DEG C and melt envelope shape
At the PTFE insulating layer 1111 of insulated wire cores 1110.
S4, back twist form pair twist core 1100, especially for 30%~40% by the output identical tension debugging of pair twister
35% back twist rate, with 8-16 times of size of 1110 outer diameter of insulated wire cores for a pitch, using pair twister by two insulated wires
Core 1110 carries out pair twist；In preferably, during back twist forms pair twist core 1100, to each single insulated wire
The rotation of core 1110 plus torsion rate are zero, and the tension needs being applied in two insulated wire cores 1110 are constant and consistent, can lead to debugging pair
Winch is controlled realization, so that two 1110 crooked radians of insulated wire cores are identical during back twist pair twist, to cause pair twist
Twisted pair wire return loss is effectively reduced about substantially symmetrical about its central axis in two insulated wire cores in core.And need debugging control each
The pair twist pitch of pair twist core is different, and the inverse difference of the pair twist pitch of each pair twist group is approximately equal, so that manufactured
Cable effectively avoids the signal between each pair twist group from interfering with each other or cross-talk, reaches the stabilization signal transmission of high quality.
S5, back twist stranding, the back twist rate for being 30%~40% especially 35% by cable-former debugging, will be each using cable-former
Pair twist core 1100 carries out back twist stranding, so that each 1100 stranding back pitch of pair twist core is constant, internal stress can be mutual
It offsets.
S6, filling semiconducting fibers, in gap when stranding between adjacent pair twist core 1100, filling semiconductive is fine
The puigging 1200 of stranding inner core 1000 is made in dimension, and semiconducting fibers form low-impedance conductive path outside insulated wire cores 1110
Diameter；In preferably, using four groups of semiconducting fibers corresponding with four pair twist cores 1100, four groups of semiconductives
Fiber in cross-shaped configuration similar with two column pair twist cores 1100 arrange, by four groups of semiconducting fibers be filled in respectively four it is right
In gap between twisted wire core 1100, the gap that four pair twist cores 1100 are surrounded to the one end at center is also filled one and partly and is led
Electric fiber potentially acts as filling supporter of each group pair twist core 1100 inside cable and makes 1000 structure of stranding inner core steady
It is fixed；Further, every group of semiconducting fibers use the semiconducting fibers of 5~15 1200~2000dtex, especially fill 8
1600dtex semiconducting fibers, the surface resistivity of the semiconducting fibers layer are 1.8*10-3Ω * cm, is integrally formed stranding inner core
1000 puigging 1200, so that cable overall structure can be 300 times by lower noise.
S7, the anti-interference layer 2100 of braiding use more ultra-fine silver-plated copper conductors braidings to surround anti-in 1200 periphery of puigging
Electromagnetic wave mesh grid；In preferably, anti-electromagnetic wave mesh grid uses diameter of section for the ultra-fine of 0.05~0.1mm
Silver-plated copper conductor simultaneously weaves in such a way that plum blossom is intersected, and conductor also can be used with flexibility, electrically conductive property and anti-electricity
Other conductors of magnetic wave property.It is preferably implemented at one in test and selects 128 to meet cutting for " VDE 0259CLASS6 " requirement
Face diameter is the ultra-fine silver-plated copper conductor of 0.05mm, and the periphery for being coated on stranding inner core 1000 is woven in such a way that plum blossom is intersected.
S8,2200 isolation protective material of oversheath are wrapped, and PTFE isolation protective material is passed through accurate seamless wrapped skill
Wrapped 3 layers round the periphery of anti-interference layer 2100 of art, every layer of wrapped overlap rate of PTFE semi-directional band is 45%~60%, especially
The wrapped overlap rate of internal layer is 50%, and the wrapped overlap rate in middle layer is 52%, and the wrapped overlap rate of outer layer is 54%；It is needed during wrapped
Air is effectively squeezed away, to guarantee that integral insulation core 1110 does not uniformly interfere with signal transmission；As preferred reality
It applies in scheme, described in the construction of cable introduction as above of material properties used by PTFE insulating layer 1111.
S9, sintering melt envelope and the oversheath 2200 of cable periphery 2000 are made, 350~400 DEG C especially at 380 DEG C into
The oversheath 2200 that envelope forms cable periphery 2000 is melted in row sintering, achievees the purpose that insulated enclosure is protected.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, therefore
Without departing from the technical solutions of the present invention, according to the technical essence of the invention it is to the above embodiments it is any modification,
Equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (9)
1. a kind of low temperature resistant low noise flexible cable characterized by comprising
Stranding inner core comprising at least three pair twist cores and puigging；Pair twist core is by two about substantially symmetrical about its central axis exhausted
Edge core pair twist is formed, and the pair twist pitch of each pair twist core is different；The insulated wire cores include being twined by more ultra-fine conductors
The conductor inner core made of and the PTFE insulating layer for being coated on conductor inner core periphery；The puigging includes being filled in each pair twist
Semiconducting fibers between core；
With cable periphery comprising anti-interference layer and oversheath；The anti-interference layer includes being coated on resisting for stranding inner core periphery
Electromagnetic wave mesh grid；The oversheath is coated on anti-interference layer periphery, uses PTFE isolation protective material.
2. a kind of low temperature resistant low noise flexible cable according to claim 1, it is characterised in that: pair of every pair twist core
The inverse difference for twisting pitch is approximately equal.
3. a kind of low temperature resistant low noise flexible cable according to claim 1, it is characterised in that: the insulated wire cores
PTFE insulating layer melts Feng Ercheng through seamless wrapped and sintering for three layers of PTFE semi-directional band, and every layer of PTFE semi-directional band is wrapped to be taken
Lid rate is 45%~60%；The degree of orientation of used PTFE semi-directional band is 1.2-1.4, with a thickness of 0.05~0.1mm.
4. a kind of low temperature resistant low noise flexible cable according to claim 1, it is characterised in that: the oversheath is three
Layer PTFE semi-directional band melts Feng Ercheng through seamless wrapped and sintering, every layer of PTFE semi-directional band around packet overlap rate be 45%~
60%；The degree of orientation of used PTFE semi-directional band is 1.2-1.4, with a thickness of 0.05~0.1mm.
5. a kind of low temperature resistant low noise flexible cable according to claim 1, it is characterised in that: the conductor inner core is by more
The ultra-fine conductor of root is with 5~15 times of sizes of insulated wire cores outer diameter for a pitch, and winding is made clockwise；It is described ultra-fine to lead
Body uses diameter of section for the ultra-fine copper alloy conductor of 0.05~0.1mm.
6. a kind of low temperature resistant low noise flexible cable according to claim 1, it is characterised in that: the anti-electromagnetic wave braiding
Net uses the ultra-fine silver-plated copper conductor that diameter of section is 0.02~0.1mm and weaves in such a way that plum blossom is intersected.
7. a kind of low temperature resistant low noise flexible cable according to claim 1, it is characterised in that: use four twisted pair wires
Core, and the semiconducting fibers of 5~15 1200~2000dtex are uniformly filled as puigging between every two pair twist cores.
8. according to a kind of described in any item production technologies of low temperature resistant low noise flexible cable of claim 1 to 7, feature exists
In, comprising the following steps:
S1, coiled conductor inner core, by several ultra-fine conductors with 5-15 times of size of the insulated wire cores outer diameter for a pitch
The conductor inner core of insulated wire cores is made in winding in the direction of the clock；
It is S2, seamless to conductor inner core wrapped, by PTFE insulating layer by it is accurate it is seamless around packet technology round the outer of conductor inner core
Wrapped 3 layers of week, every layer of wrapped overlap rate are 45%~60%；
S3, sintering melt envelope and insulated wire cores are made, and are sintered at 350~400 DEG C and melt the PTFE insulation that envelope forms insulated wire cores
Layer；
S4, back twist form pair twist core, are 30%~40% back twist rate by the output identical tension debugging of pair twister, with insulated wire cores
8-16 times of size of outer diameter is a pitch, and two insulated wire cores are carried out pair twist using pair twister；
S5, back twist stranding, the back twist rate for being 30%~40% by cable-former debugging, are carried out each pair twist core using cable-former
Back twist stranding, so that the pitch of each pair twist core is constant after stranding；
S6, filling semiconducting fibers, in gap when stranding between adjacent pair twist core, filling semiconducting fibers are made into
The puigging of cable inner core, and semiconducting fibers form low-impedance conductive path outside insulated wire cores；
S7, the anti-interference layer of braiding surround anti-electromagnetic wave mesh grid using more ultra-fine silver-plated copper conductor braidings in puigging periphery；
S8, oversheath isolation protective material are wrapped, by PTFE isolation protective material by it is accurate it is seamless around packet technology round anti-
Wrapped 3 layers of the periphery of layer is interfered, every layer of wrapped overlap rate is 45%~60%；
S9, sintering melt envelope and the oversheath of cable periphery be made, and is sintered at 350~400 DEG C and melts envelope to form cable peripheral
Oversheath.
9. a kind of production technology of low temperature resistant low noise flexible cable according to claim 8, it is characterised in that: step S4
During back twist forms pair twist core, it is zero to the rotation of each single insulated wire cores plus torsion rate, is applied in two insulated wire cores
Uniform tension in order.
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| CN201811584304.1A CN109448910A (en) | 2018-12-24 | 2018-12-24 | A kind of low noise Low temperature-resistanflexible flexible cable and its production technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110060795A (en) * | 2019-06-03 | 2019-07-26 | 扬州市德友线缆有限公司 | A kind of novel storage merchandising machine people controls cable and its manufacturing process with high flexibility |
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