CN110379563B - Preparation process of power cable for urban building - Google Patents
Preparation process of power cable for urban building Download PDFInfo
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- CN110379563B CN110379563B CN201910641034.1A CN201910641034A CN110379563B CN 110379563 B CN110379563 B CN 110379563B CN 201910641034 A CN201910641034 A CN 201910641034A CN 110379563 B CN110379563 B CN 110379563B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000005491 wire drawing Methods 0.000 claims abstract description 176
- 239000004020 conductor Substances 0.000 claims abstract description 114
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000009941 weaving Methods 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 21
- 239000011265 semifinished product Substances 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000009954 braiding Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 16
- 238000012546 transfer Methods 0.000 abstract description 5
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- 239000000047 product Substances 0.000 description 7
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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
-
- 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
- H01B13/0006—Apparatus or processes specially adapted for manufacturing conductors or cables for reducing the size of 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
- H01B13/02—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
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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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2606—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by braiding
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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
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- Manufacturing & Machinery (AREA)
- Manufacturing Of Electric Cables (AREA)
Abstract
The invention discloses a preparation process of a power cable for urban buildings, which specifically comprises the following steps: the method comprises the following steps of wire drawing, conductor stranding, insulating layer extrusion, inner sheath extrusion, wrapping of a shielding layer, weaving of an armor layer, outer sheath extrusion, finished product inspection and finished product inspection, wherein the shielding layer is formed by wrapping of an aluminum-plastic composite tape on a wrapping machine or a cabling machine, and a combined shielding layer formed by aluminum-plastic shielding and the armor layer is arranged on the outer layer of the inner sheath, so that the transmission impedance of the power cable can be not more than 1 omega/m when the shielding transfer impedance of the finished product power cable is reduced to be 100MHz or below, and the finished product power cable can have good shielding performance, and can not interfere with adjacent circuits in the power-on use process, and the stability of the finished product power cable in use is improved.
Description
Technical Field
The invention belongs to the field of power cable production, and particularly relates to a preparation process of a power cable for urban buildings.
Background
With the development of urban buildings, a large number of devices such as electrical appliances of power distribution systems, control systems and signal systems, which need to be installed in the urban buildings, need to be implemented by using special power cables, which requires that the preparation quality and preparation efficiency of the power cables need to be considered in the preparation process of the power cables for the urban buildings.
Current city building power cable, when carrying out the wire drawing technology, the size of general wire drawing is fixed dimension, can't carry out the adjustment of wire drawing size according to actual requirement, and in the wire drawing technology, traditional wire drawing machine is when the wire drawing, it is not enough with the tension adjusting's of conductor tension or tension, and then make when the wire drawing, the wire drawing size of conductor differs, and cause the condition that the conductor was broken or drops easily, make the unable smooth and easy completion of wire drawing process, influence wire drawing efficiency, thereby influence whole power cable's finished product success rate and finished product efficiency, can not satisfy the needs of processing.
Disclosure of Invention
The invention aims to provide a preparation process of a power cable for urban buildings, which mainly solves the technical problems that the size of a common drawn wire is fixed and cannot be adjusted according to actual requirements, and in the drawing process, the tension force of a conductor is easily adjusted to be over-tight or insufficient when a traditional drawing machine is used for drawing the wire, so that the drawn wire size of the conductor is different and the conductor is easily broken or falls off, so that the drawing process cannot be smoothly completed, the drawing efficiency is influenced, and the finished product success rate and the finished product efficiency of the whole power cable are influenced.
The purpose of the invention can be realized by the following technical scheme:
a preparation process of a power cable for urban buildings specifically comprises the following steps:
the method comprises the following steps: winding a conductor onto a reel after passing through a first wire drawing wheel, starting a second motor, driving a rotating shaft to rotate by the second motor, driving a feeding disc to rotate by the rotating shaft, further automatically feeding the conductor, simultaneously starting a first motor and a second motor, driving a rotating shaft arranged in a cooling box to rotate, enabling the conductor to be sent out from a wire drawing hole after being tensioned by the rotating shaft and cooled by water in the cooling box, simultaneously starting a third motor arranged at one end of a second cam, driving the second cam to rotate by the third motor, applying a tensile force to the conductor, further enabling the conductor to be drawn to a required size through the first wire drawing wheel and the second wire drawing wheel, and simultaneously starting the third motor, driving the reel to rotate, and enabling the reel to wind the conductor after wire drawing;
step two, installing the conductor wound in the step one on a frame stranding machine, setting the rotation direction of the frame stranding machine, and stranding the conductor in multiple lines through the frame stranding machine;
feeding the twisted conductor stranded wire into an extrusion type die through a turntable to form a semi-finished insulating layer;
feeding the semi-finished product of the insulating layer into a semi-extrusion die through a turntable to form a semi-finished product of the inner sheath layer;
feeding the inner sheath layer semi-finished product into a wrapping machine or a cabling machine through a turntable to form a shielding layer semi-finished product;
the semi-finished product of the shielding layer enters a high-speed braiding machine through a turntable to be braided to form a semi-finished product of the armor layer;
and (4) enabling the armor layer semi-finished product to enter a semi-extrusion die through a turntable to form a final cable.
As a further aspect of the present invention, in the first step, the wire drawing is performed with a wire drawing pretreatment before the wire drawing operation, and the wire drawing pretreatment operation specifically includes: winding the conductor of treating tensile to the feeding dish that sets up in the feeding box on, get into the cooling box with the conductor in by the mounting hole through the feeding dish, and twine the conductor in proper order to two pivots that set up in the cooling box, the wire drawing mouth that finally sets up through cooling box one end is taken out, twist simultaneously a plurality of locating pins of equidistant setting on the wire drawing mouth, make a plurality of locating pins remove to the direction of wire drawing axle, carry out spacing fixed when pulling out the conductor through a plurality of locating pins to the wire drawing axle, with the conductor after pulling out in the wire drawing hole that sets up from the wire drawing axle, twine second cam and drawing mechanism in proper order with the conductor and stretch.
As a further scheme of the invention, in the first step, the third motor drives the second cam to rotate, after the tensile force is applied to the conductor, when the tensile force of the conductor needs to be adjusted, the first motor is started, the first motor drives the first gear to rotate, the first gear is further driven to rotate through external meshing transmission with the second gear, the rotating shaft is further driven to rotate, the rib plate is further driven to rotate through the rotating shaft, the rib plate drives the first wire drawing wheel to rotate through the connecting shaft by taking the rotating shaft as an axis, and further the distance between the first wire drawing wheel and the second wire drawing wheel is adjusted to be increased, so that the tensile force borne by the conductor is changed, and the size of the drawn wire is changed.
As a further scheme of the invention, the screw length-diameter ratio of the extrusion die in the step two is 16: 1, and the compression ratio is 2.5: 1, extruding a conductor stranded wire on a cold-feeding rubber extruding machine, wherein the processing temperature is 60-75 ℃;
the shielding layer is formed by wrapping an aluminum-plastic composite belt on a wrapping machine or a cabling machine;
the armor layer is formed by weaving one or two mixed metal wires of tinned copper wires and aluminum alloy wires on a common high-speed weaving machine.
As a further scheme of the invention, the wire drawing port comprises a boss, a wire drawing shaft and a wire drawing hole, one end of the boss is integrally connected with a fixing base, the fixing base is fixedly connected with the cooling box through bolts, a plurality of positioning pins are arranged on the boss at equal intervals, the positioning pins are fixedly connected with the boss through threaded holes, the wire drawing shaft is arranged in the boss, and the wire drawing hole is arranged in the wire drawing shaft.
As a further aspect of the present invention, the drawing mechanism includes a first motor, a rotating shaft, a first wire drawing wheel, and a first cam, wherein, the first motor is fixedly connected with the supporting plate through a bolt, one end of the first motor is rotatably connected with a first gear, the first gear is in external meshing transmission with a second gear, the second gear is rotatably connected with a rotating shaft through a key, a rotating shaft is arranged between the rotating shaft and the supporting plate, one end of the rotating shaft is provided with a rib plate, one end of the rib plate is provided with a first wire drawing wheel, the first wire drawing wheel is fixedly connected with the rib plate through a connecting shaft, one end of the supporting plate is fixedly provided with a fixed sleeve through a bearing, one end of the fixed sleeve is provided with a second cam, one end of the second cam is rotatably connected with a third motor, the third motor is fixedly connected with the frame, and one end of the supporting plate is fixedly provided with a mounting seat through a bearing, and one end of the mounting seat is provided with a first cam.
The invention has the beneficial effects that:
1. in the preparation process of the wire drawing process, the wire drawing port is additionally arranged in the wire drawing process, the plurality of positioning pins arranged on the wire drawing port are screwed, the plurality of positioning pins move towards the direction of the wire drawing shaft, the wire drawing shaft is limited and fixed when the conductor is drawn out through the plurality of positioning pins, the conductor is drawn out from the wire drawing hole under stress, the plurality of positioning pins can counteract the axial force on the wire drawing shaft, the wire drawing shaft can not move back and forth along the axial direction under the action of the axial force, the conductor is more stable when being drawn out from the wire drawing hole, the wire drawing process can prevent the conductor from being damaged under the influence of the axial force when being drawn out, the conductor drawing efficiency is improved, and the wire drawing efficiency and the wire drawing quality are improved.
2. In the wire drawing operation process, through setting up first motor, twine the conductor in proper order around second cam and drawing mechanism and stretch, twine the conductor on the reel behind first wire drawing wheel, when the wire drawing atress of conductor needs to be adjusted, start first motor, first motor drives first gear revolve, and then it is rotatory in order to drive the axis of rotation through the transmission of meshing outward with the second gear, and then drive the gusset through the axis of rotation and rotate, make the gusset drive first wire drawing wheel through the connecting axle and use the axis of rotation as the axle center rotation, and then transfer the interval between first wire drawing wheel and the second wire drawing wheel that increases, thereby change the tensile force that the conductor bore, in order to change the size of wire drawing, and then can satisfy the requirement of the different wire drawing sizes of conductor, wire drawing performance has been improved.
3. In the wire drawing operation process, through setting up first wire drawing wheel and second wire drawing wheel, draw the back in the wire drawing hole that sets up with the conductor from the wire drawing axle, twine the second cam in proper order with the conductor and stretch with drawing mechanism, twine the conductor to the reel after first wire drawing wheel for the conductor bears the drawing force that drawing mechanism and second cam provided occasionally stretching, thereby make the wire drawing process of conductor more stable, and then make the quality and the efficiency of conductor wire drawing improve greatly.
4. After the wire drawing process is finished, the shielding layer is formed by wrapping an aluminum-plastic composite belt on a wrapping machine or a cabling machine, and a combined shielding layer formed by aluminum-plastic shielding and an armor layer is arranged on the outer layer of the inner sheath, so that the shielding transfer impedance of the finished product power cable is reduced to 100MHz or below, the transmission impedance of the power cable can be not more than 1 omega/m, the finished product power cable can have good shielding performance, the power cable can not interfere with adjacent circuits in the electrifying use process, and the stability of the finished product power cable in use is improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of a drawing machine according to the present invention.
FIG. 2 is a front view of the drawing machine of the present invention.
Fig. 3 is a top view of the stretching mechanism of the present invention.
Fig. 4 is a schematic structural view of the stretching mechanism of the present invention.
FIG. 5 is a schematic view of the structure of the wire drawing port of the present invention.
Fig. 6 is a schematic view of the interior of the feed cassette of the present invention.
In the figure: 1. a frame; 2. a cooling tank; 3. a first motor; 4. a second motor; 5. a wire drawing port; 501. a fixed base; 502. a boss; 503. a wire drawing shaft; 504. positioning pins; 505. a wire drawing hole; 6. a stretching mechanism; 601. a support plate; 602. fixing the sleeve; 603. a first motor; 604. a first gear; 605. a second gear; 606. a shaft sleeve; 607. a rotating shaft; 608. a rib plate; 609. a connecting shaft; 610. a first wire drawing wheel; 611. a mounting seat; 612. a first cam; 7. a second cam; 8. a support bar; 9. a feeding box; 10. a connecting rod; 11. a pin shaft; 12. a second wire drawing wheel; 13. a reel; 14. a first limiting disc; 15. a second limiting disc; 16. a rotating shaft; 17. and a feeding disc.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A preparation process of a power cable for urban buildings specifically comprises the following steps:
firstly, winding a conductor to be stretched on a feeding disc 17 arranged in a feeding box 9, enabling the conductor to enter a cooling box 2 from a mounting hole through the feeding disc 17, sequentially winding the conductor on two rotating shafts arranged in the cooling box 2, finally drawing out the conductor through a wire drawing port 5 arranged at one end of the cooling box 2, simultaneously screwing a plurality of positioning pins 504 arranged at equal intervals on the wire drawing port 5, enabling the plurality of positioning pins 504 to move towards a wire drawing shaft 503, limiting and fixing the wire drawing shaft 503 when drawing out the conductor through the plurality of positioning pins 504, after drawing out the conductor from a wire drawing hole 505 arranged in the wire drawing shaft 503, sequentially winding the conductor on a second cam 7 and a stretching mechanism 6 for stretching, winding the conductor on a reel 13 after passing through a first wire drawing wheel 610, starting a second motor, driving a rotating shaft 16 to rotate, and driving the feeding disc 17 to rotate through the rotating shaft 16, then automatically feeding the conductor, simultaneously starting the first motor 3 and the second motor 4 to drive the rotating shaft installed in the cooling box 2 to rotate, so that the conductor is tensioned by the rotating shaft and cooled by water in the cooling box 2 and then sent out from the wire drawing hole 505, simultaneously starting a third motor arranged at one end of the second cam 7, driving the second cam 7 to rotate by the third motor, applying a stretching force to the conductor, further pulling the conductor to a required size through the first wire drawing wheel 610 and the second wire drawing wheel 12, simultaneously starting the third motor, driving the reel 13 to rotate by the third motor, enabling the reel 13 to wind the drawn conductor, when the stretching force of the conductor needs to be adjusted, starting the first motor 603, driving the first gear 603 to rotate, further driving the rotating shaft 607 to rotate through external meshing transmission with the second gear 605, the rib plate 608 is driven to rotate by the rotating shaft 607, so that the rib plate 608 drives the first wire drawing wheel 610 to rotate by taking the rotating shaft 607 as an axis through the connecting shaft 609, and further the distance between the first wire drawing wheel 610 and the second wire drawing wheel 12 is increased, so that the tensile force borne by the conductor is changed, and the size of wire drawing is changed;
through the arrangement of the first wire drawing wheel 610 and the second wire drawing wheel 12, after a conductor is drawn out of a wire drawing hole 505 arranged in the wire drawing shaft 503, the conductor is sequentially wound on the second cam 7 and the drawing mechanism 6 for drawing, and the conductor is wound on the reel 13 after passing through the first wire drawing wheel 610, so that the conductor has enough drawing force and time to bear the drawing force provided by the drawing mechanism 6 and the second cam 7 when being drawn, the wire drawing process of the conductor is more stable, and the quality and the efficiency of conductor wire drawing are greatly improved;
through setting up wire drawing mouth 5, through twisting a plurality of locating pins 504 that set up on wire drawing mouth 5 soon, make a plurality of locating pins 504 to the direction removal of wire drawing axle 503, and then carry out spacing fixed when pulling out the conductor to wire drawing axle 503 through a plurality of locating pins 504, when making the conductor pull out in atress follow wire drawing hole 505, a plurality of locating pins 504 can receive the axial force to wire drawing axle 503 and offset, make wire drawing axle 503 can not follow the axial direction round trip movement because of the effect of axial force, and then it is more stable when having guaranteed that the conductor pulls out from wire drawing hole 505, receive the influence of axial force to suffer the damage when preventing the conductor from pulling out, and then improved the efficiency that the conductor pulled out, thereby the efficiency and the wire drawing quality of wire drawing have been improved.
The conductor is sequentially wound on the second cam 7 and the drawing mechanism 6 for drawing by arranging the first motor 603, the conductor is wound on the reel 13 after passing through the first wire drawing wheel 610, when the wire drawing stress of the conductor needs to be adjusted, the first motor 603 is started, the first motor 603 drives the first gear 604 to rotate, the first gear is further in external meshing transmission with the second gear 605 to drive the rotating shaft 607 to rotate, the rotating shaft 607 drives the rib plate 608 to rotate, the rib plate 608 drives the first wire drawing wheel 610 to rotate by taking the rotating shaft 607 as the axis through the connecting shaft 609, the distance between the first wire drawing wheel 610 and the second wire drawing wheel 12 is further increased, so that the drawing force borne by the wire drawing conductor is changed, the size of the conductor is changed, the requirements of different wire drawing sizes of the conductor can be met, and the wire drawing performance is improved;
secondly, installing the conductor after winding in the step one on a frame stranding machine, setting the rotating direction of the frame stranding machine, and stranding the conductor in multiple lines through the frame stranding machine;
feeding the twisted conductor stranded wire into an extrusion type die through a turntable to form a semi-finished insulating layer;
feeding the semi-finished product of the insulating layer into a semi-extrusion die through a turntable to form a semi-finished product of the inner sheath layer;
feeding the inner sheath layer semi-finished product into a wrapping machine or a cabling machine through a turntable to form a shielding layer semi-finished product;
the semi-finished product of the shielding layer enters a high-speed braiding machine through a turntable to be braided to form a semi-finished product of the armor layer;
and (4) enabling the armor layer semi-finished product to enter a semi-extrusion die through a turntable to form a final cable.
The shielding layer in the step two is formed by wrapping an aluminum-plastic composite belt on a wrapping machine or a cabling machine, and a combined shielding layer formed by an aluminum-plastic shielding layer and an armor layer is arranged on the outer layer of the inner sheath, so that the transmission impedance of the power cable can be not more than 1 omega/m when the shielding transfer impedance of the finished power cable is reduced to 100MHz or below, and the finished power cable can have good shielding performance, and can not cause interference to adjacent circuits in the power-on use process, thereby increasing the stability of the finished power cable in use.
And the armor layer in the second step is formed by weaving one or two mixed metal wires of tinned copper wires and aluminum alloy wires on a common high-speed weaving machine.
As shown in fig. 1-6, the cooling box 2 is fixedly connected with the frame 1 through bolts, a feeding box 9 is fixedly installed in one passage of the frame 1 through bolts, a second motor is fixedly installed at one end of the feeding box 9 through bolts, a rotating shaft 16 is rotatably connected at one end of the second motor, a feeding disc 17 is rotatably connected at one end of the rotating shaft 16 through a key, a connecting rod 10 is arranged at one end of the feeding disc 17, the connecting rod 10 is fixedly connected with the feeding box 9 through a threaded hole, so that the connecting rod 10 can limit the feeding disc 17, a wire drawing port 5 is arranged at one end of the cooling box 2, the wire drawing port 5 comprises a boss 502, a wire drawing shaft 503 and a wire drawing hole 505, a fixing base 501 is integrally connected with one end of the boss 502, the fixing base 501 is fixedly connected with the cooling box 2 through bolts, a plurality of positioning pins 504 are equidistantly arranged on the boss, a wire drawing shaft 503 is provided in the boss 502, and a wire drawing hole 505 is provided in the wire drawing shaft 503.
One end of the frame 1 is provided with a stretching mechanism 6, the stretching mechanism 6 comprises a first motor 603, a rotating shaft 607, a first wire drawing wheel 610 and a first cam 612, wherein the first motor 603 is fixedly connected with a support plate 601 through bolts, one end of the first motor 603 is rotatably connected with a first gear 604, the first gear 604 is in external meshing transmission with a second gear 605, the second gear 605 is rotatably connected with the rotating shaft 607 through keys, the rotating shaft 607 is arranged between the rotating shaft 607 and the support plate 601, one end of the rotating shaft 607 is provided with a rib plate 608, one end of the rib plate 608 is provided with the first wire drawing wheel 610, the first wire drawing wheel 610 is fixedly connected with the rib plate 608 through a connecting shaft 609, one end of the support plate 601 is fixedly provided with a fixing sleeve 602 through a bearing, one end of the fixing sleeve 602 is provided with a second cam 7, one end of the second cam 7 is rotatably connected with a third motor, the third motor is fixedly connected with, and one end of the supporting plate 601 is fixedly mounted with a mounting seat 611 through a bearing, and one end of the mounting seat 611 is provided with a first cam 612.
The bottom end of the tension mechanism 6 is provided with a reel 13, one end of the reel 13 penetrates through the frame 1 and extends inwards, one end of the reel 13 is rotatably connected with a second motor, and a first limiting disc 14 and a second limiting disc 15 are sequentially arranged on the reel 13 through keys.
One end of the frame 1 is fixedly provided with a support rod 8 through a bolt, the top end of the support rod 8 is provided with a pin shaft 11, and the pin shaft 11 is provided with a second wire drawing wheel 12.
When the conductor drawing device is used, the first wire drawing wheel 610 and the second wire drawing wheel 12 are arranged, after a conductor is drawn out of a wire drawing hole 505 arranged in a wire drawing shaft 503, the conductor is sequentially wound on the second cam 7 and the drawing mechanism 6 for drawing, and after passing through the first wire drawing wheel 610, the conductor is wound on the reel 13, so that the conductor has enough drawing force and time to bear the drawing force provided by the drawing mechanism 6 and the second cam 7 when being drawn, the wire drawing process of the conductor is more stable, and the quality and the efficiency of conductor wire drawing are greatly improved; by arranging the wire drawing port 5 and screwing the positioning pins 504 arranged on the wire drawing port 5, the positioning pins 504 move towards the wire drawing shaft 503, and then the wire drawing shaft 503 is limited and fixed by the positioning pins 504 when a conductor is drawn out, so that when the conductor is stressed and is drawn out from the wire drawing hole 505, the axial force applied to the wire drawing shaft 503 can be counteracted by the positioning pins 504, the wire drawing shaft 503 cannot move back and forth along the axial direction due to the action of the axial force, the conductor is more stable when drawn out from the wire drawing hole 505, the conductor is prevented from being damaged due to the influence of the axial force when drawn out, the conductor drawing efficiency is improved, and the wire drawing efficiency and the wire drawing quality are improved; the conductor is sequentially wound on the second cam 7 and the drawing mechanism 6 for drawing by arranging the first motor 603, the conductor is wound on the reel 13 after passing through the first wire drawing wheel 610, when the wire drawing stress of the conductor needs to be adjusted, the first motor 603 is started, the first motor 603 drives the first gear 604 to rotate, the first gear is further in external meshing transmission with the second gear 605 to drive the rotating shaft 607 to rotate, the rotating shaft 607 drives the rib plate 608 to rotate, the rib plate 608 drives the first wire drawing wheel 610 to rotate by taking the rotating shaft 607 as the axis through the connecting shaft 609, the distance between the first wire drawing wheel 610 and the second wire drawing wheel 12 is further increased, so that the drawing force borne by the wire drawing conductor is changed, the size of the conductor is changed, the requirements of different wire drawing sizes of the conductor can be met, and the wire drawing performance is improved; the shielding layer is formed by wrapping an aluminum-plastic composite belt on a wrapping machine or a cabling machine, and a combined shielding layer formed by aluminum-plastic shielding and an armor layer is arranged on the outer layer of the inner sheath, so that the shielding transfer impedance of the finished power cable is reduced to 100MHz or below, the transmission impedance of the power cable can be not more than 1 omega/m, the finished power cable can have good shielding performance, the power cable can not interfere with adjacent circuits in the electrifying use process, and the stability of the finished power cable in use is improved.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (6)
1. A preparation process of a power cable for urban buildings is characterized by comprising the following steps:
the method comprises the following steps: the conductor is wound on a winding wheel (13) after passing through a first wire drawing wheel (610), a second motor is started, the second motor drives a rotating shaft (16) to rotate, the rotating shaft (16) drives a feeding disc (17) to rotate so as to automatically feed the conductor, meanwhile, a first motor (3) and a second motor (4) are started to drive a rotating shaft arranged in a cooling box (2) to rotate, so that the conductor is tensioned by the rotating shaft and cooled by water in the cooling box (2) and then is sent out from a wire drawing hole (505), meanwhile, a third motor arranged at one end of a second cam (7) is started to drive the second cam (7) to rotate so as to apply tensile force to the conductor, the conductor is further drawn to a required size through the first wire drawing wheel (610) and a second wire drawing wheel (12), and meanwhile, the third motor is started to drive the winding wheel (13) to rotate, so that the reel (13) winds the drawn conductor;
step two, installing the conductor wound in the step one on a frame stranding machine, setting the rotation direction of the frame stranding machine, and stranding the conductor in multiple lines through the frame stranding machine;
feeding the twisted conductor stranded wire into an extrusion type die through a turntable to form a semi-finished insulating layer;
feeding the semi-finished product of the insulating layer into a semi-extrusion die through a turntable to form a semi-finished product of the inner sheath layer;
feeding the inner sheath layer semi-finished product into a wrapping machine or a cabling machine through a turntable to form a shielding layer semi-finished product;
the semi-finished product of the shielding layer enters a high-speed braiding machine through a turntable to be braided to form a semi-finished product of the armor layer;
and (4) enabling the armor layer semi-finished product to enter a semi-extrusion die through a turntable to form a final cable.
2. The process for preparing the power cable for urban buildings according to claim 1, wherein in the first step, the wiredrawing is performed with a wiredrawing pretreatment before the wiredrawing operation, and the specific wiredrawing pretreatment operation comprises: the conductor to be stretched is wound on a feeding disc (17) arranged in a feeding box (9), the conductor enters a cooling box (2) through the feeding disc (17) through a mounting hole, the conductor is sequentially wound on two rotating shafts arranged in the cooling box (2), finally, a wire drawing port (5) formed in one end of the cooling box (2) is drawn out, and meanwhile, a plurality of positioning pins (504) arranged at equal intervals in the wire drawing port (5) are screwed, so that the positioning pins (504) move towards the direction of a wire drawing shaft (503), the wire drawing shaft (503) is limited and fixed when the conductor is drawn out through the positioning pins (504), and after the conductor is drawn out from a wire drawing hole (505) formed in the wire drawing shaft (503), the conductor is sequentially wound on a second cam (7) and a stretching mechanism (6) to be stretched.
3. The preparation process of the power cable for the urban building according to claim 1, wherein in the first step, the third motor drives the second cam (7) to rotate, after the tensile force is applied to the conductor, when the tensile force of the conductor needs to be adjusted, the first motor (603) is started, the first motor (603) drives the first gear (604) to rotate, and further drives the rotating shaft (607) to rotate through external meshing transmission with the second gear (605), and further drives the rib plate (608) to rotate through the rotating shaft (607), so that the rib plate (608) drives the first wire drawing wheel (610) to rotate around the rotating shaft (607) through the connecting shaft (609), and further adjusts the distance between the first wire drawing wheel (610) and the second wire drawing wheel (12), thereby changing the tensile force borne by the conductor to change the size of the drawn wire.
4. The preparation process of the power cable for the urban building according to claim 1, wherein in the second step, the extrusion die has a screw length-diameter ratio of 16: 1 and a compression ratio of 2.5: 1, the conductor stranded wire is extruded on a cold-feed extrusion rubber machine, and the processing temperature is 60-75 ℃;
the shielding layer is formed by wrapping an aluminum-plastic composite belt on a wrapping machine or a cabling machine;
the armor layer is formed by weaving one or two mixed metal wires of tinned copper wires and aluminum alloy wires on a common high-speed weaving machine.
5. The preparation process of the power cable for the urban building according to claim 2, wherein the wire drawing port (5) comprises a boss (502), a wire drawing shaft (503) and a wire drawing hole (505), one end of the boss (502) is integrally connected with a fixing base (501), the fixing base (501) is fixedly connected with the cooling box (2) through a bolt, a plurality of positioning pins (504) are arranged on the boss (502) at equal intervals, the positioning pins (504) are fixedly connected with the boss (502) through threaded holes, the wire drawing shaft (503) is arranged in the boss (502), and the wire drawing hole (505) is arranged in the wire drawing shaft (503).
6. The preparation process of the power cable for the urban building according to claim 2, wherein the drawing mechanism (6) comprises a first motor (603), a rotating shaft (607), a first wire drawing wheel (610) and a first cam (612), wherein the first motor (603) is fixedly connected with the supporting plate (601) through a bolt, one end of the first motor (603) is rotatably connected with a first gear (604), the first gear (604) is in external meshing transmission with a second gear (605), the second gear (605) is rotatably connected with the rotating shaft (607) through a key, a shaft sleeve (606) is arranged between the rotating shaft (607) and the supporting plate (601), one end of the rotating shaft (607) is provided with a rib plate (608), one end of the rib plate (608) is provided with the first wire drawing wheel (610), and the first wire drawing wheel (610) is fixedly connected with the rib plate (608) through a connecting shaft (609), one end of the supporting plate (601) is fixedly provided with a fixing sleeve (602) through a bearing, one end of the fixing sleeve (602) is provided with a second cam (7), one end of the second cam (7) is rotatably connected with a third motor, the third motor is fixedly connected with the rack (1) through a bolt, one end of the supporting plate (601) is fixedly provided with a mounting seat (611) through the bearing, and one end of the mounting seat (611) is provided with a first cam (612).
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| CN111599538A (en) * | 2020-07-01 | 2020-08-28 | 芜湖市科特电线电缆有限公司 | Power cable cabling machine and operation method thereof |
| CN111760919B (en) * | 2020-07-08 | 2022-05-20 | 青海鑫邦线缆有限公司 | Cable drawing structure and cable drawing method |
| CN112700915B (en) * | 2020-12-21 | 2022-03-08 | 安徽华能电缆股份有限公司 | Special high-flexibility instrument cable for intermediate frequency motor and special production equipment thereof |
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Effective date of registration: 20221116 Address after: 239311 No.99, Qiaoba Road, qiaotian community, Tongcheng Town, Tianchang City, Chuzhou City, Anhui Province Patentee after: TIANCHANG HUILING ELECTRIC APPLIANCE METER FACTORY Address before: 239311 No.99, Qiaoba Road, qiaotian community, Tongcheng Town, Tianchang City, Chuzhou City, Anhui Province Patentee before: ANHUI HUI NING ELECTRICAL INSTRUMENT GROUP Co.,Ltd. |
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Effective date of registration: 20231229 Address after: 239311 No.99, Qiaoba Road, qiaotian community, Tongcheng Town, Tianchang City, Chuzhou City, Anhui Province Patentee after: ANHUI HUI NING ELECTRICAL INSTRUMENT GROUP Co.,Ltd. Address before: 239311 No.99, Qiaoba Road, qiaotian community, Tongcheng Town, Tianchang City, Chuzhou City, Anhui Province Patentee before: TIANCHANG HUILING ELECTRIC APPLIANCE METER FACTORY |