CN108806892B - The manufacturing process of copper core polyvinyl chloride insulation flame retardant cable - Google Patents
The manufacturing process of copper core polyvinyl chloride insulation flame retardant cable Download PDFInfo
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- CN108806892B CN108806892B CN201810849859.8A CN201810849859A CN108806892B CN 108806892 B CN108806892 B CN 108806892B CN 201810849859 A CN201810849859 A CN 201810849859A CN 108806892 B CN108806892 B CN 108806892B
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- polyvinyl chloride
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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
- H01B13/008—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing extensible conductors or cables
-
- 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
-
- 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
-
- 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
- H01B13/141—Insulating conductors or cables by extrusion of two or more insulating layers
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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
- H01B13/143—Insulating conductors or cables by extrusion with a special opening of the extrusion head
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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
Abstract
The present invention relates to cable processing technique fields, disclose the manufacturing process of copper core polyvinyl chloride insulation flame retardant cable, comprising the following steps: A, monofilament are drawn；B, monofilament is annealed；C, process；D, it once extrudes；E, primary cooling；F, flame-retardant layer coats；G, secondary to extrude；H, secondary cooling；I, it clears up；Polyvinyl chloride large labor intensity is cleared up in order to solve to exist in the prior art operator, the problem of time-consuming, this programme, which passes through, heats the gas flowed out from expansion box to polyvinyl chloride, polyvinyl chloride can be made to liquefy, and it can be combined by the hot gas that escape pipe is blown out with rack gear sliding, liquefied polyvinyl chloride rapidly can be released into pore, achieve the effect that clear up polyvinyl chloride, it is cleared up without operator by foreign object, both the labor intensity of operator had been reduced, also improve the efficiency of cleaning, so as to rapidly carry out the production of next group cable, also improve the efficiency of production cable.
Description
Technical field
The present invention relates to cable processing technique fields, in particular to the manufacture work of copper core polyvinyl chloride insulation flame retardant cable
Skill.
Background technique
When processing copper core polyvinyl chloride insulation flame retardant cable, the good copper conductor of process is usually put into unwrapping wire roller
On, then by conducting wire sequentially pass through the first extrusion molding mechanism, the first cooling body, flame-retardant layer cladding mechanism, the second extrusion molding mechanism and
Second cooling body is finally connected with take-up roller, and the first extrusion molding mechanism is identical with the structure of the second extrusion molding mechanism, the first cooler
The structure of structure and the second cooling body is identical；When conducting wire passes through the first extrusion molding mechanism, by the first extrusion molding mechanism to conducting wire cladding
Upper polyvinyl chloride, and the conducting wire for coating upper polyvinyl chloride is precooled, so that the polyvinyl chloride of liquid is preliminary on conducting wire
Molding, conducting wire will coat upper first layer polyvinyl chloride；Then make the conducting wire for being coated with polyvinyl chloride layer again, it is cooling to enter first
Mechanism is further cooled down, so that first layer polyvinyl chloride is molded on conducting wire；Conducting wire warp with first layer polyvinyl chloride
To cross the first cooling body will go into flame-retardant layer cladding mechanism, and flame-retardant layer coats mechanism will be to first layer polyvinyl chloride
Flame-retardant layer on conducting wire cladding, then conducting wire will go into the second extrusion molding mechanism, and the second extrusion molding mechanism is on the flame-retardant layer of conducting wire
Second layer polyvinyl chloride is coated, after cladding, conducting wire be will go into the second cooling body, and the second cooling body is on conducting wire
Second layer polyvinyl chloride cools down, so that second layer polyvinyl chloride is thoroughly formed on flame-retardant layer, obtains cable, finally uses
Take-up roller stores cable.
First extrusion molding mechanism or the second extrusion molding mechanism used in the prior art, including extruding machine and defeated spool, defeated line
Feed inlet is provided in pipe outgoing line side side wall, feed inlet is connected to the pore of defeated spool, and the head of extruding machine is connected to feed inlet, defeated
Precooler is installed on spool leading-out terminal；In use, be first passed into conducting wire in the end of incoming cables of defeated spool pore, conducting wire will be from
The leading-out terminal of defeated spool pore exports, and starts extruding machine, and the polyvinyl chloride of liquid will be squeezed into charging by head by extruding machine
Mouthful, polyvinyl chloride enters in pore by feed inlet, the polyvinyl chloride of liquid by with the conductive contact in defeated spool outgoing line side,
Polyvinyl chloride will be coated on conducting wire, and conducting wire is pulled from the end of incoming cables of defeated spool to leading-out terminal, in conducting wire from defeated spool leading-out terminal
During skidding off, precooler will precool polyvinyl chloride, so that polyvinyl chloride is tentatively formed on conducting wire, from defeated
The conducting wire that spool leading-out terminal skids off will have polyvinyl chloride layer, to obtain cable, complete the cladding operation of conducting wire.
Above scheme has the following problems, outlet will at the end of, in order to which conducting wire all to be coated to polyvinyl chloride,
After defeated spool outlet, then extruding machine is made to stop squeezing out polyvinyl chloride, it will the polyvinyl chloride for causing part extra stays in
In defeated spool, after operating more than repeatedly, the polyvinyl chloride of accumulation would be possible to block the outgoing line side of defeated spool, previous clear
The method for managing polyvinyl chloride is manual cleaning, and operator needs firmly to impact molded in defeated spool pipe by external device
Polyvinyl chloride on wall, and polyvinyl chloride intensity after molding and toughness are all higher, operator not only needs to expend biggish
Strength, and be also required to expend longer time, the molded polyvinyl chloride on defeated spool tube wall could be broken through, be operated
It is next very troublesome, increase the labor intensity of operator, also reduces the efficiency of production cable.
Summary of the invention
The invention is intended to provide one kind can timely clear up the polyvinyl chloride of accumulation, and it can reduce operator's
Labor intensity improves the manufacturing process of the copper core polyvinyl chloride insulation flame retardant cable of production efficiency.
The manufacturing process of copper core polyvinyl chloride insulation flame retardant cable in this programme, comprising the following steps:
A, monofilament is drawn: at room temperature, carrying out being drawn into copper wire to copper bar material or pole stock；
B, monofilament is annealed: be warming up to 550-600 DEG C to copper wire, keeps the temperature 1-1.5h, heating rate is 30-35 DEG C/
min；Then natural cooling is carried out to copper wire again；
C, process: process is carried out using the stranded mode of multifilament to copper wire, forms copper conductor；
D, it once extrudes: squeezing into the polyvinyl chloride of liquid, the first extrusion molding mechanism into defeated spool using the first extrusion molding mechanism
Head temperature be 320-330 DEG C, allow copper conductor to contact with the polyvinyl chloride of liquid, then to have first layer polyvinyl chloride
Copper conductor precooled, be precooled to 150-180 DEG C, in the first extrusion molding mechanism expansion box carry out gas storage；
E, primary cooling: to the copper conductor for being coated with first layer polyvinyl chloride layer, further to be cooled down, so that cladding
There is the copper conductor of first layer polyvinyl chloride layer to be cooled to 32-34 DEG C；
F, flame-retardant layer coats: coating flame-retardant layer to the copper conductor for being coated with first layer polyvinyl chloride layer；
G, secondary to extrude: to squeeze into the polyvinyl chloride of liquid, the second extrusion molding mechanism into defeated spool using the second extrusion molding mechanism
Head temperature be 320-330 DEG C, allow copper conductor to contact with the polyvinyl chloride of liquid, then to have second layer polyvinyl chloride
Copper conductor precooled, be precooled to 150-180 DEG C, in the second extrusion molding mechanism expansion box carry out gas storage；
H, secondary cooling: to the copper conductor for being coated with second layer polyvinyl chloride layer, further being cooled down, so that cladding
There is the copper conductor of second layer polyvinyl chloride layer to be cooled to 32-34 DEG C, obtains cable；
I, clear up: after cable housing, expansion box is deflated in the first extrusion molding mechanism and the second extrusion molding mechanism, right
The gas that expansion box is released is heated, and is heated to 110 DEG C, the gas after heating and the sizing polyvinyl chloride on defeated spool tube wall
It exchanges heat, so that sizing polyvinyl chloride on defeated spool tube wall is turned into liquid, the polyvinyl chloride of liquid is pushed using rack gear, lead to
It crosses escape pipe and releases the polyvinyl chloride that gas blows liquid, polyvinyl chloride is discharged to outside defeated spool.
The technical principle of this programme are as follows:
A, monofilament is drawn: at room temperature, carrying out being drawn into copper wire to copper bar material or pole stock；To copper bar material or pole stock into
Row is drawn, so that the section of copper bar material or pole stock reduces, length increases, and intensity increases to arrive copper wire.
B, monofilament is annealed: be warming up to 550-600 DEG C to copper wire, keeps the temperature 1-1.5h, heating rate is 30-35 DEG C/
min；Then natural cooling is carried out to copper wire again；By copper wire be heated to it is certain at a temperature of keep the temperature, in a manner of recrystallization
Come improve monofilament toughness, reduce monofilament intensity, to meet requirement of the wire and cable to conductor wire core.
C, process: process is carried out using the stranded mode of multifilament to copper wire, forms copper conductor；In order to improve cable
Pliability takes multifilament is twisted to form copper conductor on copper wire in order to laying installation.
D, it once extrudes: squeezing into the polyvinyl chloride of liquid, the first extrusion molding mechanism into defeated spool using the first extrusion molding mechanism
Head temperature be 320-330 DEG C, allow copper conductor to contact with the polyvinyl chloride of liquid, then to have first layer polyvinyl chloride
Copper conductor precooled, be precooled to 150-180 DEG C, in the first extrusion molding mechanism expansion box carry out gas storage；Starting the
One extrusion molding mechanism, the first extrusion molding mechanism will be pushed into polyvinyl chloride in head, and be flowed into defeated spool pore from head, copper
Conducting wire contacts the polyvinyl chloride with liquid, then cools down to the polyvinyl chloride on copper conductor, so that polyvinyl chloride is preliminary
Sizing is on conducting wire, so that copper conductor coats upper first layer polyvinyl chloride；Gas storage is carried out to expansion box, can be subsequent cleaning operation
Carry out energy storage.
E, primary cooling: to the copper conductor for being coated with first layer polyvinyl chloride layer, further to be cooled down, so that cladding
There is the copper conductor of first layer polyvinyl chloride layer to be cooled to 32-34 DEG C；Then the conducting wire with polyvinyl chloride layer will go into first
In cooling body, cooling body further cools down polyvinyl chloride layer, so that polyvinyl chloride layer is closely fixed with conducting wire
Together, i.e., the upper first layer polyvinyl chloride of sizing on conducting wire.
F, flame-retardant layer coats: coating flame-retardant layer to the copper conductor for being coated with first layer polyvinyl chloride layer；Then conducting wire enters
Into flame-retardant layer cladding mechanism, flame-retardant layer coats mechanism for flame-retardant layer on the conducting wire cladding with first layer polyvinyl chloride, makes
The cable that must be obtained has stronger flame retardant property.
G, secondary to extrude: to squeeze into the polyvinyl chloride of liquid, the second extrusion molding mechanism into defeated spool using the second extrusion molding mechanism
Head temperature be 320-330 DEG C, allow copper conductor to contact with the polyvinyl chloride of liquid, then to have second layer polyvinyl chloride
Copper conductor precooled, be precooled to 150-180 DEG C, in the second extrusion molding mechanism expansion box carry out gas storage；It is coated with
The copper conductor of flame-retardant layer will go into the second extrusion molding mechanism, and the second extrusion molding mechanism coats the second strata on the flame-retardant layer of conducting wire
Vinyl chloride.
H, secondary cooling: to the copper conductor for being coated with second layer polyvinyl chloride layer, further being cooled down, so that cladding
There is the copper conductor of second layer polyvinyl chloride layer to be cooled to 32-34 DEG C, obtains cable；After cladding, conducting wire will go into second
In cooling body, the second cooling body cools down to second layer polyvinyl chloride on conducting wire, so that second layer polyvinyl chloride is thorough
Sizing obtains cable on flame-retardant layer.
I, clear up: after cable housing, expansion box is deflated in the first extrusion molding mechanism and the second extrusion molding mechanism, right
The gas that expansion box is released is heated, and is heated to 110 DEG C, the gas after heating and the sizing polyvinyl chloride on defeated spool tube wall
It exchanges heat, so that sizing polyvinyl chloride on defeated spool tube wall is turned into liquid, the polyvinyl chloride of liquid is pushed using rack gear, lead to
It crosses escape pipe and releases the polyvinyl chloride that gas blows liquid, polyvinyl chloride is discharged to outside defeated spool.After conducting wire transmission,
Gas in expansion box is released, and the gas of flowing is heated, the gas of higher temperature will near sizing feed inlet
Polyvinyl chloride exchange heat, polyvinyl chloride will gradually liquefy, gas pass through is blowing polyvinyl chloride flowing, also by rack gear will
It pushes the polyvinyl chloride of liquid to flow to the leading-out terminal of pore, the flowing velocity of polyvinyl chloride is accelerated, so that polyvinyl chloride can
It quickly removes, operator will can be collected the polyvinyl chloride flowed out from pore.
Compared with prior art, this programme has the beneficial effect that this programme passes through the gas for making to flow out from expansion box to poly-
Vinyl chloride is heated, and polyvinyl chloride can be made to liquefy, and can be combined by the hot gas that escape pipe is blown out with rack gear sliding,
Liquefied polyvinyl chloride rapidly can be released into pore, that is, achieve the effect that clear up polyvinyl chloride, be not necessarily to operator
Member is cleared up by foreign object, has both been reduced the labor intensity of operator, the efficiency of cleaning has been also improved, so as to rapidly
The production for carrying out next group cable also improves the efficiency of production cable.
Further, it in step A, needs to draw copper bar material or pole stock using wire drawing machine.It is convenient using wire drawing machine
Copper bar material or pole stock drawn.
Further, it in step B, needs to anneal to copper wire using annealing furnace, installation water is cooling on annealing furnace outer wall
Device, so that annealing furnace is cooled to room temperature with the speed that rate is 20-30 DEG C/min, copper wire cools down with furnace.Use water cooler pair
Annealing furnace cools down, and can facilitate the cooling rate of control annealing furnace, slowly be cooled down to copper wire, can eliminate adding for copper wire
Work hardness and the plasticity for restoring copper wire.
Further, air-cooled precooling is carried out to the copper conductor with polyvinyl chloride in step D.Using air-cooled side
Formula, during gas is flowed to the cooling position of needs, the temperature of gas will be gradually risen, so that polyvinyl chloride is gradually cooled
Cooling can prevent the too fast of polyvinyl chloride temperature reduction and be hardened and become fragile, so that the polyvinyl chloride better quality of pre-setting.
Further, the temperature of cooling medium is 30-35 DEG C in step E.The copper that easy to control can be coated with polyvinyl chloride layer is led
Line is cooled to 32-34 DEG C, the cable needed.
Further, collecting box, collecting box and defeated spool pore leading-out terminal are installed in defeated spool pore leading-out terminal in step F
Between be connected with deflector.The polyvinyl chloride of the liquid flowed out from pore, is flowed into collecting box by deflector, thus convenient
The collection of polyvinyl chloride.
Detailed description of the invention
Fig. 1 is the schematic diagram of the manufacturing process embodiment of copper core polyvinyl chloride insulation flame retardant cable of the present invention；
Fig. 2 is defeated spool right part enlarged diagram in Fig. 1；
Fig. 3 is the enlarged diagram in Fig. 1 at A1.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description includes: unwrapping wire roller 1, the first extrusion molding mechanism 2, the first cooling body 3, flame-retardant layer
Coat mechanism 4, the second extrusion molding mechanism 5, the second cooling body 6, take-up roller 7, multiple screw extruder 8, defeated spool 9, second gear 10,
Third gear 11 precools pipe 12, the first cooler 13, head 14, water tank 15, water pump 16, intake chamber 17, gutter channel 18, the
It is two coolers 19, out of the bucket 20, feed inlet 21, turbine case 22, cam 23, inflator 24, piston rod 25, communicating pipe 26, unidirectional
Valve 27, expansion box 28, sequencing valve 29, air inlet pipe 30, heater 31, heating chamber 32, hollow defeated spool 33, the first fan blade
34, second bevel gear 35, first bevel gear 36, first gear 37, the first turbine 38, rack gear 39, escape pipe 40, bearing 41, pipe
Hole 42, spring 43, deflector 44, collecting box 45.
Embodiment is basic as shown in attached drawing 1, Fig. 2 and Fig. 3: the manufacturing process of copper core polyvinyl chloride insulation flame retardant cable needs
To use a kind of process units of copper core polyvinyl chloride insulation flame retardant cable, the production dress of copper core polyvinyl chloride insulation flame retardant cable
It sets including rack, is successively fixed with unwrapping wire roller 1, the first extrusion molding mechanism 2, the first cooling body 3, flame-retardant layer from left to right in rack
Mechanism 4, the second extrusion molding mechanism 5, the second cooling body 6 and take-up roller 7 are coated, is wound with and leads between unwrapping wire roller 1 and take-up roller 7
Line, conducting wire pass sequentially through the first extrusion molding mechanism 2, the first cooling body 3, flame-retardant layer cladding mechanism 4, the second extrusion molding mechanism 5 and the
Two cooling bodies 6, the first extrusion molding mechanism 2 is identical with the structure of the second extrusion molding mechanism 5, the first cooling body 3 and the second cooler
The structure of structure 6 is identical, and the first extrusion molding mechanism 2 includes multiple screw extruder 8 and defeated spool 9, be provided in defeated 9 outgoing line side side wall of spool into
Material mouth 21, feed inlet 21 are connected to the pore 42 of defeated spool 9, and the head 14 of multiple screw extruder 8 is connected to feed inlet 21, and conducting wire is worn
The pore 42 of defeated spool 9 is crossed, cam 23 is rotatably connected in rack, inflator 24, cam 23 and inflator are fixed in rack
24 piston rod 25 offsets, and expansion box 28 is fixed in rack, and connecting cylinder has communicating pipe 26 between inflator 24 and expansion box 28,
The check valve 27 of oriented 28 air inlet of expansion box is installed on communicating pipe 26, is located on the position at feed inlet 21 in defeated 9 tube wall of spool
It is provided with heating chamber 32, expansion box 28 and heating chamber 32 are communicated with air inlet pipe 30, install having heaters 31, air inlet pipe in air inlet pipe 30
30 are equipped with valve, and heating chamber 32 and the pore 42 of defeated spool 9 are communicated with escape pipe 40, outlet of the escape pipe 40 towards pore 42
End, is rotatably connected to the first turbine 38 in heating chamber 32, and the first turbine 38 is coaxially connected with first gear 37, and first gear 37
In in pore 42, slidably connecting the rack gear 39 for pushing polyvinyl chloride in pore 42, rack gear 39 is nibbled with 37 phase of first gear
It closes, is connected with spring 43 between 9 tube wall of rack gear 39 and defeated spool, first gear 37 is coaxially connected with first bevel gear 36, pore
Interference fit has bearing 41 in 42, hollow defeated spool 33 is rotatably connected in bearing 41, conducting wire passes through hollow defeated spool 33, hollow
Flat key is connected with second bevel gear 35 on defeated spool 33, and first bevel gear 36 is meshed with second bevel gear 35, hollow defeated spool
33 right end flat keys are connected with the first fan blade 34, have been bolted collecting box below defeated 9 pore of spool, 42 leading-out terminal
45, deflector 44 has been bolted on 9 tube wall of defeated spool between 42 leading-out terminal of collecting box 45 and pore, and deflector 44 is defeated
Precooling mechanism is installed, precooling mechanism includes second to be connected with the screw coaxial of multiple screw extruder 8 on 9 leading-out terminal of spool
Gear 10, second gear 10 are engaged with third gear 11, and third gear 11 is coaxially connected with the second fan blade, is clamped in rack
Have and precool pipe 12, the second fan blade, which is rotatably connected on, to be precooled in pipe 12, and defeated 9 outgoing line side of spool is located at feed inlet 21 and goes out
Part between line end is cooling section, precools pipe 12 and is wrapped on cooling section, precools pipe 12 and is located at cooling section and fan leaf
First cooler 13 is installed on the position between piece, pipe 12 is precooled and is communicated with turbine case 22, opening is provided on turbine case 22,
The second turbine is rotatably connected in turbine case 22, cam 23 is coaxially connected with the second turbine, and the first cooling body 3 includes water tank 15
With out of the bucket 20, gutter channel 18 is welded on water tank 15, conducting wire passes through gutter channel 18, and gutter channel 18 is communicated with intake chamber 17, into
Sink 17 is connected to water tank 15, and the outlet of out of the bucket 20 is equipped with the second cooler 19, water in out of the bucket 20 towards gutter channel 18
Water pump 16 is communicated between case 15 and out of the bucket 20；
The following steps are included:
A, monofilament is drawn: at room temperature, using wire drawing machine by together or the die hole of several drawing die, to copper bar material or
Person's pole stock carries out being drawn into copper wire；
B, monofilament is annealed: copper wire being put into annealing furnace, carries out being warming up to 580 DEG C to copper wire, keeps the temperature 1h, heating rate
For 32 DEG C/min；Water cooler is installed on annealing furnace outer wall, after heat preservation, starts water cooler, so that annealing furnace is with speed
Rate is that the speed of 22 DEG C/min is cooled to room temperature, and copper wire cools down with furnace；
C, process: process is carried out using the stranded mode of multifilament to copper wire using process machine, forms copper conductor；
D, it once extrudes: when conducting wire passes through the first 2 mechanism, extrusion molding mechanism, starting multiple screw extruder 8, multiple screw extruder 8 will
Polyvinyl chloride is pushed into head 14, the temperature of head is 330 DEG C, and polyvinyl chloride will go into feed inlet 21 by head 14
It is interior, and it is flowed into from feed inlet 21 outgoing line side of defeated 9 pore 42 of spool, screw rod also drives second gear 10 to rotate, second gear
10 drive third gear 11 to rotate, and third gear 11 drives fan blade rotation, and the air-flow that the rotation of the second fan blade generates will
It is flowed along precooling pipe 12, when gas flowing is equipped with the position of the first cooler 13 by being located at precooling pipe 12, gas
It is exchanged heat with the first cooler 13 by precooling 12 tube wall of pipe, the gas after cooling will continue to flow, and be flowed into winding
In precooling pipe 12 on cooling section, take-up roller 7 is rotated, so that conducting wire is transmitted from unwrapping wire roller 1 to take-up roller 7, conducting wire is by band
Polyvinyl chloride in defeated spool 9 skid off together, precool pipe 12 and polyvinyl chloride precooled, be precooled to 160 DEG C, gas
During body flows after the first cooler 13, the temperature of gas is gradually risen, the cooling so that polyvinyl chloride is gradually cooled,
So that upper first layer polyvinyl chloride of being tentatively formed on conducting wire；Period will be flowed into turbine case 22 from the gas that pipe 12 flows out is precooled
Interior, and flow out from the opening of turbine case 22, the gas flowed in turbine case 22 will drive the second turbine rotation, and the second turbine is by band
Moving cam 23 rotates, and the piston rod 25 of cam 23 and inflator 24 forms 23 pair of cam, and cam 23 will drive the work of inflator 24
Stopper rod 25 reciprocally moves in inflator 24, and inflator 24 will constantly inflate to expansion box 28,28 pairs of gas of expansion box
Body is stored, and expansion box 28 is made to store enough gas；
E, primary cooling: the second cooler 19 of starting is passed through water to out of the bucket 20, and the conducting wire with polyvinyl chloride layer will be into
Enter into the gutter channel 18 of the first cooler 13, water will be exchanged heat with the second cooler 19 by 20 barrels of walls of out of the bucket, water
Temperature is 32 DEG C, so that the coolant-temperature gage flowed out from out of the bucket 20 reduces, water will be flowed into gutter channel 18, and the water after cooling will be with
Conductive contact with first layer polyvinyl chloride, and the conducting wire with first layer polyvinyl chloride is further cooled down, so that cladding
There is the copper conductor of first layer polyvinyl chloride layer to be cooled to 33 DEG C, so that first layer polyvinyl chloride is closely fixed on conducting wire
Together, i.e. first layer polyvinyl chloride sizing is on conducting wire；
F, flame-retardant layer coats: then conducting wire enters in flame-retardant layer cladding mechanism 4, and flame-retardant layer cladding mechanism 4 will be to having
Flame-retardant layer on the conducting wire cladding of first layer polyvinyl chloride；
G, secondary to extrude: and then conducting wire will go into the second extrusion molding mechanism 5, using the second extrusion molding mechanism 5 to defeated spool
The polyvinyl chloride of liquid is inside squeezed into, the temperature of the head of the second extrusion molding mechanism 5 is 330 DEG C, then to second layer polychlorostyrene second
The copper conductor of alkene is precooled, and is precooled to 150-180 DEG C, is wrapped on the flame-retardant layer of copper conductor using the second extrusion molding mechanism 5
Second layer polyvinyl chloride is covered, gas storage is carried out to the expansion box in the second extrusion molding mechanism 5；
H, secondary cooling: after cladding, conducting wire be will go into the second cooling body 6, and the second cooling body 6 is to conducting wire
Upper second layer polyvinyl chloride cools down, and the copper conductor for being coated with second layer polyvinyl chloride layer is cooled to 33 DEG C, so that second
Strata vinyl chloride is thoroughly formed on flame-retardant layer, and cable is obtained, and is finally stored cable using take-up roller 7, is obtained cable；
I, it clears up: after conducting wire transmission, starting heater 31, control sequencing valve 29 is opened, the gas in expansion box 28
Body will be by entering in heating chamber 32, when gas flows through air inlet pipe 30 along air inlet pipe 30, and gas and heater 31 will pass through
30 tube wall of air inlet pipe exchanges heat, and the temperature of gas is increased to 110 DEG C, and the gas of higher temperature enters in heating chamber 32, will
Heating chamber 32 is heated, the polyvinyl chloride near feed inlet 21 of being formed will pass through defeated 9 tube wall of spool and gas converting heat, polychlorostyrene
Ethylene will gradually liquefy, and gas will be flowed out by heating chamber 32 from escape pipe 40, still have certain temperature, heat after gas converting heat
Gas will blow liquefied polyvinyl chloride and flow to the leading-out terminal of pore 42, and liquefied polyvinyl chloride is flowed out from pore 42, and gas exists
In heating chamber 32 during flowing, gas also drives turbine rotation, and turbine will drive first gear 37 to rotate, first gear 37
To be slided on the tube wall of pore 42 with carry-over bar 39, rack gear 39 by reciprocally push liquefied polyvinyl chloride to pore 42
Leading-out terminal flowing accelerates the flowing velocity of polyvinyl chloride, and first gear 37 also drives first bevel gear 36 to rotate, the first cone tooth
Wheel 36 drives second bevel gears 35 to rotate, and second bevel gear 35 drives hollow defeated spool 33 to rotate, and hollow defeated spool 33 drives the
One fan blade 34 rotation, the first fan blade 34 blow liquefied polyvinyl chloride to 42 leading-out terminal of pore flow, further plus
The fast flow velocity of polyvinyl chloride, so as to quickly remove polyvinyl chloride, the polyvinyl chloride of the liquid flowed out from pore 42 is suitable
Deflector 44 be flowed into collecting box 45, collecting box 45 will be collected the polyvinyl chloride of liquid.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (6)
1. the manufacturing process of copper core polyvinyl chloride insulation flame retardant cable, comprising the following steps:
A, monofilament is drawn: at room temperature, carrying out being drawn into copper wire to copper bar material or pole stock；
B, monofilament is annealed: being carried out being warming up to 550-600 DEG C to copper wire, is kept the temperature 1-1.5h, heating rate is 30-35 DEG C/min；So
Natural cooling is carried out to copper wire again afterwards；
C, process: process is carried out using the stranded mode of multifilament to copper wire, forms copper conductor；
It is characterized in that, further comprising the steps of:
D, it once extrudes: squeezing into the polyvinyl chloride of liquid, the machine of the first extrusion molding mechanism into defeated spool using the first extrusion molding mechanism
The temperature of head is 320-330 DEG C, and copper conductor is allowed to contact with the polyvinyl chloride of liquid, then to the copper for having first layer polyvinyl chloride
Conducting wire is precooled, and is precooled to 150-180 DEG C, carries out gas storage to the expansion box in the first extrusion molding mechanism；
E, primary cooling: to the copper conductor for being coated with first layer polyvinyl chloride layer, further to be cooled down, so that being coated with the
The copper conductor of one strata pvdc layer is cooled to 32-34 DEG C；
F, flame-retardant layer coats: coating flame-retardant layer to the copper conductor for being coated with first layer polyvinyl chloride layer；
G, secondary to extrude: to squeeze into the polyvinyl chloride of liquid, the machine of the second extrusion molding mechanism into defeated spool using the second extrusion molding mechanism
The temperature of head is 320-330 DEG C, and copper conductor is allowed to contact with the polyvinyl chloride of liquid, then to the copper for having second layer polyvinyl chloride
Conducting wire is precooled, and is precooled to 150-180 DEG C, carries out gas storage to the expansion box in the second extrusion molding mechanism；
H, secondary cooling: to the copper conductor for being coated with second layer polyvinyl chloride layer, further being cooled down, so that being coated with
The copper conductor of two-layer pvc layer is cooled to 32-34 DEG C, obtains cable；
I, clear up: after cable housing, expansion box is deflated in the first extrusion molding mechanism and the second extrusion molding mechanism, to gas storage
The gas that case is released is heated, and is heated to 110 DEG C, and the gas after heating and the sizing polyvinyl chloride on defeated spool tube wall carry out
Heat exchange is made sizing polyvinyl chloride on defeated spool tube wall be turned into liquid, the polyvinyl chloride of liquid is pushed using rack gear, by going out
Tracheae releases the polyvinyl chloride that gas blows liquid, and polyvinyl chloride is discharged to outside defeated spool.
2. the manufacturing process of copper core polyvinyl chloride insulation flame retardant cable according to claim 1, it is characterised in that: the step
In rapid A, need to draw copper bar material or pole stock using wire drawing machine.
3. the manufacturing process of copper core polyvinyl chloride insulation flame retardant cable according to claim 2, it is characterised in that: the step
It in rapid B, needs to anneal to copper wire using annealing furnace, water cooler is installed on annealing furnace outer wall, so that annealing furnace is with speed
Rate is that the speed of 20-30 DEG C/min is cooled to room temperature, and copper wire cools down with furnace.
4. the manufacturing process of copper core polyvinyl chloride insulation flame retardant cable according to claim 3, it is characterised in that: the step
Air-cooled precooling is carried out to the copper conductor with first layer polyvinyl chloride in rapid D.
5. the manufacturing process of copper core polyvinyl chloride insulation flame retardant cable according to claim 4, it is characterised in that: the step
The temperature of cooling medium is 30-35 DEG C in rapid E.
6. the manufacturing process of copper core polyvinyl chloride insulation flame retardant cable according to claim 5, it is characterised in that: the step
Collecting box is installed in defeated spool pore leading-out terminal in rapid F, is connected with deflector between collecting box and defeated spool pore leading-out terminal.
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| CN102938275A (en) * | 2012-11-19 | 2013-02-20 | 四川明星电缆股份有限公司 | Production method of fireproof middle and high voltage cables |
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Denomination of invention: Manufacturing process of copper core PVC insulated flame-retardant cable Effective date of registration: 20230825 Granted publication date: 20190827 Pledgee: Qufu sub branch of Postal Savings Bank of China Ltd. Pledgor: Shandong Jianye Cable Co.,Ltd. Registration number: Y2023980053698 |
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