CN109659093A - A kind of low direct capacitance core wire manufacturing process for HDMI data line - Google Patents
A kind of low direct capacitance core wire manufacturing process for HDMI data line Download PDFInfo
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- CN109659093A CN109659093A CN201811409476.5A CN201811409476A CN109659093A CN 109659093 A CN109659093 A CN 109659093A CN 201811409476 A CN201811409476 A CN 201811409476A CN 109659093 A CN109659093 A CN 109659093A
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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
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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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
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
- H01B13/002—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment for heat extraction
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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
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/148—Selection of the insulating material therefor
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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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- 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
- H01B13/30—Drying; Impregnating
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Abstract
The present invention relates to a kind of low direct capacitance core wire manufacturing process for HDMI data line, heating melting is carried out in the machine barrel that polyethylene foamed particle is added to the first extruder after drying to form viscous state, polyethylene foamed after melting is squeezed into extrusion die by the screw rod in the machine barrel of the first extruder, the copper wire core material that traction mechanism passes through extrusion die is drawn, and the polyethylene foamed after melting is coated on copper wire core material to form polyethylene foamed layer；The machine barrel of second extruder is connected on the extrusion die, heating melting is carried out in the machine barrel that high density polyethylene (HDPE) particle is added to the second extruder after drying to form viscous state, high density polyethylene (HDPE) after melting is squeezed into the extrusion die by the screw rod in the machine barrel of the second extruder, and the high density polyethylene (HDPE) after melting, which is coated on outside polyethylene foamed layer, to be formed after high-density polyethylene layer as core wire；Core wire is wound after supercooling drier, spark tester, storage line tension bracket by take-up mechanism respectively.
Description
Technical field
The present invention relates to the technical fields of core wire production, more particularly, to a kind of low direct capacitance core for HDMI data line
Line manufacturing process.
Background technique
It is well known that data line is the wire rod for transmitting signal.Wherein, HDMI data line is for transmitting high-resolution multimedia
The wire rod of vision signal, USB data line are connected and communicate with for computer and external equipment.
Minimum unit in data line is core wire, and core wire is twisted by several copper monofilament first during the manufacturing
Cheng Yigen copper wire core material, and high density polyethylene (HDPE) particles fuse is formed by viscous state using screw extruder, by squeezing out and wrapping
It overlays on outside core material and forms high-density polyethylene layer so that core wire is made, the setting of high-density polyethylene layer can reach exhausted to core material
Edge, protection purpose, then more core wires, mylar film, ground wire, aluminium foils etc. are kinked together to forming data line.
In current above-mentioned data wire forming proces, although every core material outer cladding high-density polyethylene layer can reach exhausted
Edge, protection purpose, but the direct capacitance of every core wire is high, to reduce the transmission speed of data line, therefore exists certain
Improvements.
Summary of the invention
The purpose of the present invention is to provide a kind of low direct capacitance core wire manufacturing process for HDMI data line, have and improve
The characteristics of transmission speed.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of low direct capacitance core wire manufacturing process for HDMI data line, comprises the following steps:
Several copper monofilament are kinked into copper wire core material using simple lay cable-former, the copper wire core material kinked are placed in electricity by S100
In dynamic dynamic paying out machine, conveying copper wire core material, which enters in conducting wire preheater, to be preheated；
S200, by polyethylene foamed particle by drying after be added to the first extruder machine barrel in carry out heating melting to be formed
Polyethylene foamed after melting is squeezed into extrusion die by viscous state, the screw rod in the machine barrel of the first extruder, traction mechanism
The copper wire core material for passing through extrusion die is drawn, and the polyethylene foamed after melting is coated on copper wire core material to form foaming
Polyethylene layer；
S300, the machine barrel of the second extruder are connected on the extrusion die, and high density polyethylene (HDPE) particle is added after drying
Enter into the machine barrel of the second extruder to carry out heating melting to form viscous state, the screw rod in the machine barrel of the second extruder will melt
High density polyethylene (HDPE) afterwards is squeezed into the extrusion die, and the high density polyethylene (HDPE) after melting is coated on outside polyethylene foamed layer
Become core wire after forming high-density polyethylene layer；
S400, core wire are wound after supercooling drier, spark tester, storage line tension bracket by take-up mechanism respectively.
Preferably, in process S200, the temperature of polyethylene foamed particle is heated to 180 DEG C by the machine barrel of the first extruder
~ 190 DEG C to form viscous state.
Preferably, in process S300, the temperature of high density polyethylene (HDPE) particle is heated to 200 by the machine barrel of the second extruder
DEG C ~ 210 DEG C to form viscous state.
Preferably, in process S200, the machine barrel of the machine barrel of the first extruder and the second extruder is connected to the same machine
On head mold；Wherein,
The extrusion die includes that shell and setting are squeezed in intracorporal first extruding cavity of shell and the second extruding cavity, described first
Chamber is communicated with the machine barrel of the first extruder out, and second extruding cavity is communicated with the machine barrel of the second extruder, is opened on the shell
Equipped with the runner mouth communicated respectively with the first extruding cavity and the second extruding cavity；
The plug extending into the first extruding cavity is installed on the shell, the end of the plug is provided with die face in first,
First extruding cavity is provided with first outer die face compatible with die face in first around runner mouth；
The mouth mold extending into the second extruding cavity is installed, second extruding cavity is provided with the around runner mouth on the shell
Die face in two is provided with second outer die face compatible with die face in second in the mouth mold.
Preferably, it is provided on the shell for covering the first installation lid closed in the first extruding cavity accent, the plug
It is threaded in the first installation to cover to extend into the first extruding cavity, be socketed on the shell for compressing the first installation lid
The first compacting ring, offer several first mounting holes on first compacting ring, be equipped with end on first mounting hole
The first positioning screw being threaded on shell is threaded with several ends and housing exterior walls phase on first compacting ring
First supported adjusts screw.
Preferably, it is provided on the shell for covering the second installation lid closed in the second extruding cavity accent, the mouth mold
It is threaded in the second installation to cover to extend into the second extruding cavity, be socketed on the shell for compressing the second installation lid
The second compacting ring, offer several second mounting holes on second compacting ring, be equipped with end on second mounting hole
The second positioning screw being threaded on shell is threaded with several ends and housing exterior walls phase on second compacting ring
Second supported adjusts screw.
Preferably, the shell is provided with several first electric heating sheets, first electric heating sheets around the first extruding cavity
Polyethylene foamed temperature for will melt in the first extruding cavity is constant between 180 DEG C ~ 190 DEG C.
Preferably, the shell is provided with several second electric heating sheets, second electric heating sheets around the second extruding cavity
High density polyethylene (HDPE) temperature for will melt in the second extruding cavity is constant between 200 DEG C ~ 210 DEG C.
Preferably, separation trough is circumferentially offered on the shell, the separation trough is located at the first extruding cavity and second and squeezes out
Between chamber.
Preferably, color masterbatch particle is added in the high density polyethylene (HDPE) particle.
In conclusion advantageous effects of the invention are as follows:
1, copper wire core material is first transported into conducting wire preheater and is preheated, to remove moisture content, oil on copper wire core material
Dirty and impurity, and then can be improved the temperature of copper wire core material, improve adhesiving effect of the polyethylene foamed layer on copper wire core material；
2, the application is first passed through in core material outer cladding polyethylene foamed layer, then in polyethylene foamed layer outer cladding high-density polyethylene
The mode of alkene layer can utilize the material characteristic of polyethylene foamed layer, reduce the direct capacitance of every core wire, can also increase every
The pliability of core wire；
3, it is used according to by polyethylene foamed layer directly as insulating layer, the wearability of polyethylene foamed layer is poor, therefore logical
It crosses and is used to improve the wearability of core wire in polyethylene foamed layer outer cladding high-density polyethylene layer, improve service life, so that should
Core wire has service life height and the low characteristic of direct capacitance simultaneously.
Detailed description of the invention
Fig. 1 is the flow diagram of embodiment；
Fig. 2 is the connection schematic diagram of equipment in embodiment；
Fig. 3 is the structural schematic diagram of extrusion die in embodiment.
Appended drawing reference: 1, shell；2, the first extruding cavity；3, the second extruding cavity；4, runner mouth；5, plug；6, core bore；7,
Die face in one；8, the first outer die face；9, the first electric heating sheets；10, mouth mold；11, molding hole；12, die face in second；13, second
Outer die face；14, the second electric heating sheets；15, separation trough；16, the first installation lid；17, the first compacting ring；18, the first positioning screw；
19, first screw is adjusted；20, the second installation lid；21, the second compacting ring；22, the second positioning screw；23, second screw is adjusted.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Referring to figs. 1 and 2, a kind of low direct capacitance core wire manufacturing process for HDMI data line, including following work
Sequence:
Several copper monofilament are kinked into copper wire core material using simple lay cable-former, the copper wire core material kinked are placed in electricity by S100
In dynamic dynamic paying out machine, conveying copper wire core material, which enters in conducting wire preheater, to be preheated；Conducting wire presets device and uses high-frequency induction
Preheater, conducting wire preheater can remove moisture content, oil content and impurity on copper wire core material, and conducting wire is made to keep dry and cleaning, and
And after copper wire core material is heated to a suitable temperature, subsequent polyethylene foamed is enabled to preferably to be attached to copper wire core material
On.
S200, by polyethylene foamed particle by drying after be added to the first extruder machine barrel in carry out heating melting with
Viscous state is formed, the polyethylene foamed after melting is squeezed into extrusion die by the screw rod in the machine barrel of the first extruder, is drawn
The copper wire core material that mechanism passes through extrusion die is drawn, and the polyethylene foamed after melting is coated on copper wire core material to be formed
Polyethylene foamed layer.
Wherein, polyethylene foamed particle is purchased using finished product or is arranged in pairs or groups according to the autonomous wish of user, polyethylene
Foaming has the mode of physical blowing or the mode of chemical blowing, and the application is by the way of physical blowing, by using will be high
Pressure polyethylene particle and low pressure polyethylene particle pass through 3:1 and are mixed to form polyethylene foamed particle to be added to the first extruder
In hopper, polyethylene foamed particle is melted in the machine barrel of the first extruder and foams to form the poly- second of foaming of viscous state
The temperature of polyethylene foamed particle is heated to 180 DEG C ~ 190 DEG C to form viscous state, foam degrees by the machine barrel of alkene, the first extruder
30%.Traction mechanism is for providing copper wire core material tractive force, and copper wire core material is after extrusion die, the poly- second of the foaming of viscous state
Alkene is constantly pressed into extrusion die by the thrust of rotary screw, and then is extruded by extrusion die in copper wire core
Around material, continuous closely knit polyethylene foamed layer is formed.
S300, the machine barrel of the second extruder are connected on the extrusion die, by high density polyethylene (HDPE) particle by drying
It is added in the machine barrel of the second extruder afterwards and carries out heating melting to form viscous state, the screw rod in the machine barrel of the second extruder will
High density polyethylene (HDPE) after melting is squeezed into the extrusion die, and the high density polyethylene (HDPE) after melting is coated on polyethylene foamed
Layer is outer to be formed after high-density polyethylene layer as core wire.
Specifically, the machine barrel of the machine barrel of the first extruder and the second extruder is connected on the same extrusion die, highly dense
Degree polyethylene particle is melted in the machine barrel of the second extruder and is formed the high density polyethylene (HDPE) of viscous state, the second extruder
Machine barrel the temperature of high density polyethylene (HDPE) particle is heated to 200 DEG C ~ 210 DEG C to form viscous state, traction mechanism continues to provide
Copper wire core material tractive force is coated with the copper wire core material of polyethylene foamed layer after extrusion die, the high-density polyethylene of viscous state
Alkene is constantly pressed into extrusion die by the thrust of rotary screw, and then is extruded by extrusion die and gathered in foaming
Around pvdf layer, continuous closely knit high-density polyethylene layer is formed, to generate the core wire.
It is worth noting that being added with color masterbatch particle in high density polyethylene (HDPE) particle.It can be by high density polyethylene (HDPE) particle
It is coloured, to meet the needs of production.
S400, core wire are wound after supercooling drier, spark tester, storage line tension bracket by take-up mechanism respectively.
Specifically, cooling drier includes the first segment cooling trough, second segment cooling trough and blowing set gradually
Drying machine, first segment cooling trough use constant temperature movable flume, and the water body in first segment cooling trough heats energy by heating tube
Enough constant temperature is maintained between 60 DEG C ~ 70 DEG C.Second segment cooling trough is cooled down using the water of normal temperature state.Wherein, described to lead
Draw mechanism setting between cooling drier and spark tester, traction mechanism is for pulling copper wire core wire to pass through head die
Tool, hauling speed are regarded as the speed of production of production line.
Spark tester uses high-frequency spark testing machine, and spark tester is used to detect the outer high-density polyethylene layer of core wire
Voltage endurance, when core wire passes through spark tester, surrounding is a KV level high-frequency electrical pressure area, if voltage zone core wire appearance
Existing defects can then be broken down by high-voltage, and generate breakdown point and alert.
Cold end external measuring instrument is additionally provided between spark tester and storage line tension bracket, for measuring the final of core wire
Stablize outer diameter, is disposed with direct capacitance tester and eccentricity detecting correcting device in the end of cold end external measuring instrument.
Storage line tension bracket uses horizontal storage rack, and storage line tension bracket is equipped with multiple storage line guide wheels, all storage line guide wheels
Control for brake is carried out using magnetic powder cluth.
Take-up mechanism batches admission machine using twin shaft, and it is not only high-efficient to batch admission machine using twin shaft, is also convenient for carrying out down
Procedure, production efficiency with higher.
As shown in figure 3, the machine barrel of the machine barrel of the first extruder and the second extruder is connected to same in process S200
On extrusion die.Specifically, extrusion die includes that shell 1 and the first extruding cavity 2 and second being arranged in shell 1 squeeze out
Chamber 3, the first extruding cavity 2 are communicated with the machine barrel of the first extruder, and the polyethylene foamed melted in the first extruder barrel can be by
Screw rod is squeezed into the first extruding cavity 2.Second extruding cavity 3 is communicated with the machine barrel of the second extruder, is melted in the second extruder barrel
The high density polyethylene (HDPE) melted can be squeezed into the second extruding cavity 3 by screw rod.
Offer the runner mouth 4 communicated respectively with the first extruding cavity 2 and the second extruding cavity 3 on shell 1, the two of runner mouth 4
End is communicated with the first extruding cavity 2 and the second extruding cavity 3 respectively, and runner mouth 4 is arranged along the axial direction line of shell 1.Pacify on shell 1
Equipped with the plug 5 extending into the first extruding cavity 2, plug 5 offers core bore 6 along its axial direction line, and core bore 6 is used for for copper wire
Core material passes through, and different plug 5 has the core bore 6 of different pore sizes, to adapt to the copper wire core material of different diameter specifications
Process requirements.The end of plug 5 is provided with die face 7 in first around core bore 6, the first extruding cavity 2 around runner mouth 4 be provided with
The outer die face 8 of die face 7 compatible first in first.
When polyethylene foamed is squeezed into the first extruding cavity 2 as a result, can in first die face 7 and the first external mold
Face 8 is flowed, and then is coated on to enter in runner mouth 4 on copper wire core material, and polyethylene foamed layer squeezes in runner mouth 4, is fixed
Type is simultaneously firmly attached on copper wire core material.
It is worth noting that shell 1 is provided with several first electric heating sheets 9 around the first extruding cavity 2, first electricity adds
The polyethylene foamed temperature that backing 9 is used to melt in the first extruding cavity 2 is constant between 180 DEG C ~ 190 DEG C, passes through the first electricity
The setting of heating sheet 9 is able to maintain the mobility of polyethylene foamed.
The mouth mold 10 extending into the second extruding cavity 3 is installed, mouth mold 10 is offered into along its axial direction line on shell 1
Type hole 11, the second extruding cavity 3 are provided with die face 12 in second around runner mouth 4, be provided in mouth mold 10 with second in die face 12
Compatible second outer die face 13.When high density polyethylene (HDPE) is squeezed into the second extruding cavity 3 as a result, the high density of viscous state
Polyethylene die face 12 and the second outer die face 13 can flow in second, so be coated on outside polyethylene foamed layer formed it is highly dense
It spends after polyethylene layer to generate core wire.
It is worth noting that shell 1 is provided with several second electric heating sheets 14, second electricity around the second extruding cavity 3
The high density polyethylene (HDPE) temperature that heating sheet 14 is used to melt in the second extruding cavity 3 is constant between 200 DEG C ~ 210 DEG C.Pass through
The setting of two electric heating sheets 14 is able to maintain the mobility of high density polyethylene (HDPE), and then provides the temperature for being higher than polyethylene foamed layer
Degree improves adhesive force of the high-density polyethylene layer outside polyethylene foamed layer.
Wherein, circumferentially offer separation trough 15 on shell 1, separation trough 15 be located at the first extruding cavity 2 and the second extruding cavity 3 it
Between.Shell 1 can be separated by separation trough 15, to reduce the heat transmitting of the first electric heating sheets 9 and the second electric heating sheets 14.
One end of first extruding cavity 2 and shell 1 mutually passes to form accent, is provided on shell 1 and squeezes for covering to close first
The first installation lid 16 of 2 accent of chamber, the center of the first installation lid 16 offer the first threaded hole out, and plug 5 is threadedly coupled
To extend into the first extruding cavity 2 on the first installation lid 16, the mode that thus plug 5 is connected through a screw thread can adjust first
Spacing between interior die face 7 and the first outer die face 8 adjusts the contact area of polyethylene foamed and copper wire core material, and then to adapt to
The process requirements of different type copper wire core material.
Be socketed with the first compacting ring 17 for compressing the first installation lid 16 on shell 1, one end of shell 1 integrally formed with
For the first connecting pin of the first compacting ring 17 socket, the first installation lid 16 is adapted with the internal diameter of the first compacting ring 17, the first pressure
The internal diameter of collar 17 is greater than the outer diameter of the first connecting pin, and the first installation lid 16 can be fastened on the first compacting ring 17 as a result, and
And first compacting ring 17 can on the first connecting pin by a small margin adjustment swing.Specifically, if being offered on the first compacting ring 17
The first mounting hole is done, is equipped with the first positioning screw 18 that end thread is connected on shell 1 on the first mounting hole, wherein the
The aperture of one mounting hole is greater than the first positioning screw 18.Several ends and 1 outer wall of shell are threaded on first compacting ring 17
First to offset adjusts screw 19, and first adjusts the circumferential equidistantly distributed of screw 19 on the first compacting ring 17.By unclamping the
One positioning screw 18, rotation the first adjusting screw 19 can adjust 5 position of plug, and then improve core bore 6 and runner mouth in plug 5
4 concentricity.
The other end of second extruding cavity 3 and shell 1 mutually passes to form accent, is provided on shell 1 and closes for covering second
Second installation lid 20 of 3 accent of extruding cavity, the center of the second installation lid 20 offer the second threaded hole, and 10 screw thread of mouth mold connects
It connects on the second installation lid 20 to extend into the second extruding cavity 3, the mode that thus mouth mold 10 is connected through a screw thread can be improved
Spacing in second between die face 12 and the second outer die face 13, and then to adapt to the process requirements of different type copper wire core material.
Be socketed with the second compacting ring 21 for compressing the second installation lid 20 on shell 1, one end of shell 1 integrally formed with
For the second connection end of the second compacting ring 21 socket, the second installation lid 20 is adapted with the internal diameter of the second compacting ring 21, the second pressure
The internal diameter of collar 21 is greater than the outer diameter of second connection end, and the second installation lid 20 can be fastened on the second compacting ring 21 as a result, and
And second compacting ring 21 can in second connection end by a small margin adjustment swing.Specifically, if being offered on the second compacting ring 21
The second mounting hole is done, is equipped with the second positioning screw 22 that end thread is connected on shell 1 on the second mounting hole, wherein the
The aperture of two mounting holes is greater than the second positioning screw 22.Several ends and 1 outer wall of shell are threaded on second compacting ring 21
Second to offset adjusts screw 23, and second adjusts the circumferential equidistantly distributed of screw 23 on the second compacting ring 21.By unclamping the
Two positioning screws 22, rotation the second adjusting screw 23 can adjust 10 position of mouth mold, so improve in mouth mold 10 molding hole 11 with
The concentricity of runner mouth 4.
The application is first passed through in core material outer cladding polyethylene foamed layer, then poly- in polyethylene foamed layer outer cladding high density
The mode of pvdf layer can utilize the material characteristic of polyethylene foamed layer, reduce the direct capacitance of every core wire, can also increase every
The pliability of root core wire；Used according to by polyethylene foamed layer directly as insulating layer, the wearability of polyethylene foamed layer compared with
Difference, therefore the wearability by being used to improve core wire in polyethylene foamed layer outer cladding high-density polyethylene layer improve and use the longevity
Life, so that the core wire has service life height and the low characteristic of direct capacitance simultaneously.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of low direct capacitance core wire manufacturing process for HDMI data line, it is characterised in that: comprise the following steps:
Several copper monofilament are kinked into copper wire core material using simple lay cable-former, the copper wire core material kinked are placed in electricity by S100
In dynamic dynamic paying out machine, conveying copper wire core material, which enters in conducting wire preheater, to be preheated；
S200, by polyethylene foamed particle by drying after be added to the first extruder machine barrel in carry out heating melting to be formed
Polyethylene foamed after melting is squeezed into extrusion die by viscous state, the screw rod in the machine barrel of the first extruder, traction mechanism
The copper wire core material for passing through extrusion die is drawn, and the polyethylene foamed after melting is coated on copper wire core material to form foaming
Polyethylene layer；
S300, the machine barrel of the second extruder are connected on the extrusion die, and high density polyethylene (HDPE) particle is added after drying
Enter into the machine barrel of the second extruder to carry out heating melting to form viscous state, the screw rod in the machine barrel of the second extruder will melt
High density polyethylene (HDPE) afterwards is squeezed into the extrusion die, and the high density polyethylene (HDPE) after melting is coated on outside polyethylene foamed layer
Become core wire after forming high-density polyethylene layer；
S400, core wire are wound after supercooling drier, spark tester, storage line tension bracket by take-up mechanism respectively.
2. a kind of low direct capacitance core wire manufacturing process for HDMI data line according to claim 1, it is characterised in that:
In process S200, the temperature of polyethylene foamed particle is heated to 180 DEG C ~ 190 DEG C and is glued with being formed by the machine barrel of the first extruder
Fluidised form.
3. a kind of low direct capacitance core wire manufacturing process for HDMI data line according to claim 1, it is characterised in that:
In process S300, the temperature of high density polyethylene (HDPE) particle is heated to 200 DEG C ~ 210 DEG C to be formed by the machine barrel of the second extruder
Viscous state.
4. a kind of low direct capacitance core wire manufacturing process for HDMI data line according to claim 1, it is characterised in that:
In process S200, the machine barrel of the machine barrel of the first extruder and the second extruder is connected on the same extrusion die；Wherein,
The extrusion die includes the first extruding cavity (2) and the second extruding cavity of shell (1) and setting in shell (1)
(3), first extruding cavity (2) communicates with the machine barrel of the first extruder, the machine of the second extruding cavity (3) and the second extruder
Cylinder communicates, and the runner mouth (4) communicated respectively with the first extruding cavity (2) and the second extruding cavity (3) is offered on the shell (1)；
The plug (5) extending into the first extruding cavity (2) is installed, the end of the plug (5) is provided on the shell (1)
Die face (7) in first, first extruding cavity (2) are provided with die face (7) compatible first in first around runner mouth (4)
Outer die face (8)；
The mouth mold (10) extending into the second extruding cavity (3) is installed, second extruding cavity (3) surrounds on the shell (1)
Runner mouth (4) is provided with die face in second (12), be provided on the mouth mold (10) with second in die face (12) compatible
Two outer die faces (13).
5. a kind of low direct capacitance core wire manufacturing process for HDMI data line according to claim 4, it is characterised in that:
It is provided on the shell (1) for covering the first installation lid (16) closed in the first extruding cavity (2) accent, plug (5) spiral shell
Line is connected on the first installation lid (16) to extend into the first extruding cavity (2), is socketed on the shell (1) for compressing the
The first compacting ring (17) of one installation lid (16), offers several first mounting holes on first compacting ring (17), and described the
The first positioning screw (18) that end thread is connected on shell (1), first compacting ring (17) are equipped on one mounting hole
On be threaded with several ends and shell (1) outer wall offsets first adjusts screw (19).
6. a kind of low direct capacitance core wire manufacturing process for HDMI data line according to claim 4, it is characterised in that:
It is provided on the shell (1) for covering the second installation lid (20) closed in the second extruding cavity (3) accent, mouth mold (10) spiral shell
Line is connected on the second installation lid (20) to extend into the second extruding cavity (3), is socketed on the shell (1) for compressing the
The second compacting ring (21) of two installation lids (20), offers several second mounting holes on second compacting ring (21), and described the
The second positioning screw (22) that end thread is connected on shell (1), second compacting ring (21) are equipped on two mounting holes
On be threaded with several ends and shell (1) outer wall offsets second adjusts screw (23).
7. a kind of low direct capacitance core wire manufacturing process for HDMI data line according to claim 4, it is characterised in that:
The shell (1) is provided with several first electric heating sheets (9) around the first extruding cavity (2), and first electric heating sheets (9) are used for
The polyethylene foamed temperature melted in first extruding cavity (2) is constant between 180 DEG C ~ 190 DEG C.
8. a kind of low direct capacitance core wire manufacturing process for HDMI data line according to claim 7, it is characterised in that:
The shell (1) is provided with several second electric heating sheets (14) around the second extruding cavity (3), and second electric heating sheets (14) are used
It is constant between 200 DEG C ~ 210 DEG C in the high density polyethylene (HDPE) temperature that will be melted in the second extruding cavity (3).
9. a kind of low direct capacitance core wire manufacturing process for HDMI data line according to claim 8, it is characterised in that:
It is circumferentially offered separation trough (15) on the shell (1), the separation trough (15) is located at the first extruding cavity (2) and the second extruding cavity
(3) between.
10. a kind of low direct capacitance core wire manufacturing process for HDMI data line according to claim 1, feature exist
In: color masterbatch particle is added in the high density polyethylene (HDPE) particle.
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Application publication date: 20190419 |