High-temperature-resistance polyvinyl chloride insulated cable and production device thereof

Abstract

The invention relates to a high-temperature-resistant polyvinyl chloride insulated cable and a production device thereof. Relates to the technical field of cable production. Comprising a discharging mechanism, a material grinding mechanism and an extrusion mechanism, the discharging mechanism is used for releasing a single-strand conductor, the material grinding mechanism is used for polishing and brushing the surface of the conductor in the axial direction, the extrusion mechanism is used for extruding a sheath on the surface of the conductor, the device further comprises a blowing mechanism, and the blowing mechanism comprises a shell, an impeller disc and a gas distribution disc; the outer edge of the impeller disc is connected with the inner wall of the shell through a bearing, the outer edge of the air distribution disc is attached to the inner wall of the shell, and an air conveying pipe is arranged between the air distribution disc and the side wall of the shell. A first through hole is formed in the middle of the impeller disc, and bristles wrapping the conductor are arranged in the first through hole. The method has the advantages that the surface cleanliness of the conductor can be improved, and then the attaching effect of the sheath on the surface of the conductor is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cable production, and in particular to a high-temperature-resistant polyvinyl chloride insulated cable and a production device thereof. Background Art

[0002] Cables are usually made of several or several groups of wires twisted into a rope-like shape. Each group of wires is insulated from each other, and the entire cable is covered with a highly insulating covering. At the same time, in order to increase the overall strength of the cable, a reinforcing skeleton is set in the middle of several groups of wires.

[0003] In existing related technologies, the production of single-strand conductors generally involves the following steps: conductor, stranding or bundling, insulation injection molding, and withstand voltage testing. Chinese patent publication CN219634467U discloses a cable extrusion line, specifically comprising a pay-off device, an extrusion device, and a take-up device, arranged sequentially along the process direction. The pay-off device includes a straightening table; the take-up device includes a traction machine; the extrusion device includes an extruder equipped with an extrusion die, the extrusion die including an outer die and a core disposed within the outer die, the core having a cable core passageway disposed within the core, the cable core passageway communicating with the outer die; an extrusion passageway connected to both the cable core passageway and the outer die is disposed between the core and outer die; the straightening table has an outlet facing the inlet end of the cable core passageway, and the outlet end of the cable core passageway is disposed opposite the inlet end of the traction machine. This cable extrusion line is easy to use and highly practical, ensuring that the cable core does not easily shake when the sheath is extruded onto the outer surface of the cable core, thus maintaining the stability of the sheath diameter on the cable core.

[0004] However, this patent does not clean the cable core before straightening it, and dust will adhere to the cable core during the pulling process. This dust will rub against the cable core during straightening and may even be pressed into the inner side of the cable core, affecting the injection molding effect of the cable core sheath. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present application provides a high-temperature-resistant polyvinyl chloride insulated cable and a production device thereof.

[0006] In the first aspect, the present application provides a high-temperature-resistant polyvinyl chloride insulated cable production device, which is implemented using the following technical solutions:

[0007] A high-temperature-resistant polyvinyl chloride insulated cable production device includes a discharge mechanism, an abrasive mechanism, and an extrusion mechanism. The discharge mechanism is used to discharge a single strand of conductor, the abrasive mechanism is used to axially abrade the surface of the conductor, and the extrusion mechanism is used to extrude a sheath on the surface of the conductor. The device also includes a purge mechanism disposed between the discharge mechanism and the abrasive mechanism, the purge mechanism including a housing, an impeller disk, and an air distribution disk.

[0008] The outer edge of the impeller disc is connected to the inner wall of the housing via a bearing, the outer edge of the air distribution disc is in contact with the inner wall of the housing, and an air delivery pipe is provided between the air distribution disc and the side wall of the housing;

[0009] A first through-hole is provided in the middle of the impeller disk, a second through-hole is provided in the middle of the air distribution pipe, a third through-hole is provided on the side wall of the shell, the conductor passes through the first through-hole, the second through-hole and the third through-hole in sequence, and bristles wrapping the conductor are provided in the first through-hole.

[0010] By adopting the above technical solution, the discharge mechanism, the purging mechanism, the abrasive mechanism and the extrusion mechanism are arranged in a row, which can first blow the conductor to achieve the dust removal effect, then brush the conductor to achieve the degreasing effect, and finally extrude the sheath to wrap the conductor. The process is reasonable, can reliably remove the dust on the surface of the conductor, prevent the dust from being pressed into the inside of the conductor during the abrasive process, and effectively improve the injection molding effect of the sheath on the surface of the conductor.

[0011] Optionally, a supporting leg is provided at the bottom of the housing, the housing and the conductor are coaxially arranged, the housing comprises a tube portion with both ends open and a cylinder portion with one end open and the other end closed, the tube portion and the cylinder portion are connected by a flange;

[0012] The outer ring of the bearing is connected to the inner wall of the tube portion, the outer edge of the impeller disk is connected to the inner ring of the bearing, and the outer edge of the air distribution disk is connected to the inner wall of the cylinder portion.

[0013] By adopting the above technical solution, the shell itself is designed to be detachable, which makes it easy to clean and maintain the shell and the impeller disc and air distribution disc inside the shell after disassembly. The setting of the bearing ensures that the impeller disc can automatically rotate under the action of the gas blown out of the gas pipe, thereby achieving brushing of the conductor.

[0014] Optionally, a plurality of pads are provided on the inner wall of the tube portion at intervals along the same circumference, and the plurality of pads clamp the bearing, forming an air outlet channel between the outer ring of the bearing and the inner wall of the tube portion.

[0015] By adopting the above technical solution, the gas blown out of the gas pipe can be discharged outward through the gas outlet channel, achieving smooth flow of airflow and facilitating the removal of dust on the surface of the conductor.

[0016] Optionally, the inner diameter of the first through-hole is greater than twice the outer diameter of the conductor, and the inner diameters of the second through-hole and the third through-hole are the same and both are greater than one times the outer diameter of the conductor;

[0017] The bristles all extend in the radial direction of the impeller disk and point toward the axis of the first through-hole.

[0018] By adopting the above technical solution, the inner diameter of the first perforation is larger, leaving space for the installation of bristles and facilitating the outflow of gas from the first perforation. The inner diameters of the second and third perforations are slightly larger than the outer diameter of the conductor, ensuring that the conductor can pass through reliably while reducing the amount of gas discharged from the second and third perforations.

[0019] Optionally, the gas distribution disk and the side wall of the cylinder are separated from each other to form an air cavity. The gas distribution disk is provided with a plurality of gas distribution holes. The gas pipe is used to transport gas into the air cavity. The gas can pass through the plurality of gas distribution holes. The flow direction of the gas in the shell is opposite to the release direction of the conductor.

[0020] By adopting the above technical solution, the gas discharged from the air pipe first enters the air cavity, and then is blown evenly toward the impeller disk through the air distribution disk, ensuring that it can drive the impeller disk to rotate while removing dust from the casing to the greatest extent.

[0021] Optionally, the arrangement density of the air distribution holes gradually decreases in a direction of diffusion from the axis of the second perforation to the surrounding areas.

[0022] By adopting the above technical solution, the purging effect of the gas on the conductor surface is improved.

[0023] Optionally, at least one pair of denting components is provided on a side of the air distribution disk facing away from the impeller disk, and the denting components are used to emboss grooves on the surface of the conductor;

[0024] By adopting the above technical solution, grooves can be pressed out on the surface of the conductor, thereby improving the adhesion of the sheath to the conductor surface.

[0025] Optionally, the denting assembly includes a main rod and a pressure wheel, the main rod is fixed to the air distribution plate by a pipe clamp, a pair of opposite end faces of the main rods are each provided with a threaded hole, an auxiliary rod is adaptively screwed into the threaded hole, and the auxiliary rod is provided with a rotating seat at one end outside the threaded hole, the pressure wheel is installed on the rotating seat and can rotate around the rotating axis of the rotating seat, and the pressure wheel presses against the outer wall of the conductor.

[0026] By adopting the above technical solution, the distance between the two pressing wheels in a pair of denting assemblies can be adjusted, thereby controlling the denting effect.

[0027] Optionally, the pipe clamp is provided with a stud, the stud is passed through the corresponding air distribution hole, a nut is adaptively screwed on the stud, and the nut and the pipe clamp are respectively located on both sides of the air distribution plate.

[0028] By adopting the above technical solution, the pipe clamp can be fixed by using the air holes, thereby achieving reliable fixation of the main rod.

[0029] Optionally, the thickness of the pressing wheel gradually decreases in a direction spreading from the axis to the surrounding areas.

[0030] By adopting the above technical solution, the portion of the pressure wheel in contact with the conductor is thinner, and the groove can be formed on the surface of the conductor more easily.

[0031] In a second aspect, the present application provides a high-temperature-resistant polyvinyl chloride insulated cable, which is implemented using the following technical solutions:

[0032] A high-temperature-resistant polyvinyl chloride insulated cable is prepared by a high-temperature-resistant polyvinyl chloride insulated cable production device, comprising an insulating sleeve and multiple conductors inserted into the insulating sleeve, a sheath is provided on the outer wall of the conductor, the sheath is embedded in the groove of the conductor, and a supporting skeleton is also provided between the multiple conductors.

[0033] By adopting the above technical solution, under the support of the support frame, multiple conductors can be reliably assembled in the insulating sleeve, and a heat dissipation space can be formed between the multiple conductors. Furthermore, under the action of the groove, the sleeve can more tightly wrap the conductor.

[0034] Compared with the existing technology, this application has the following beneficial effects:

[0035] 1. The gas is transported into the shell through the gas pipe. The movement direction of the gas is opposite to that of the conductor, so that the dust on the surface of the conductor can be blown away by the gas, thereby improving the surface cleanliness of the conductor.

[0036] 2. The gas pushes the impeller disc during the process of being discharged from the casing. When the impeller disc rotates, the bristles in the first perforation can form a radial brushing on the conductor, further improving the cleaning effect on the conductor surface.

[0037] 3. During the conductor conveying process, the pressure wheel and the conductor will interact with each other, thereby forming grooves on the surface of the conductor, which makes it easier for the sheath extruded by the extrusion mechanism to adhere to the surface of the conductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic perspective view of the present application;

[0039] Figure 2 It is a reference diagram of the position status of the purge mechanism and conductor;

[0040] Figure 3 It is a reference diagram of the explosion state of the purge mechanism;

[0041] Figure 4 This is a reference diagram of the assembly status of the pipe and impeller disc;

[0042] Figure 5 is a schematic perspective view of a denting assembly;

[0043] Figure 6 It is a reference diagram of the conductor's assembly state;

[0044] In the figure: 1. Discharging mechanism;

[0045] 2. Abrasive mechanism; 20. Abrasive belt;

[0046] 3. Extrusion mechanism;

[0047] 4. Conductor; 41. Sheath; 42. Groove;

[0048] 5. Purge mechanism;

[0049] 51. Shell; 511. Third through-hole; 512. Support leg; 513. Tube; 514. Cylinder; 515. Flange; 516. Spacer; 517. Air outlet passage;

[0050] 52. Impeller disk; 521. First perforation; 522. Bristles;

[0051] 53. Air distribution plate; 531. Second perforation; 532. Air distribution hole;

[0052] 54. Bearings;

[0053] 55. Gas pipeline;

[0054] 56, dent assembly; 561, main rod; 5611, pipe clamp; 5612, threaded hole; 5613, stud; 5614, nut; 562, pressure wheel; 563, auxiliary rod; 5630, rotating seat;

[0055] 6. Insulation sleeve; 60. Support frame. DETAILED DESCRIPTION

[0056] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0057] This embodiment discloses a production device for high-temperature-resistant polyvinyl chloride insulated cables.

[0058] Figure 1 is a schematic three-dimensional diagram of this application. Figure 1A high-temperature-resistant polyvinyl chloride insulated cable production device includes a discharge mechanism 1, a purge mechanism 5, an abrasive mechanism 2, and an extrusion mechanism 3 arranged in a row. The discharge mechanism 1 releases the coiled conductor 4 outward, that is, the conductor 4 can be transported outward in a single strand. After passing through the purge mechanism 5, the conductor 4 can blow out the dust on the surface. After the conductor 4 passes through the purge mechanism 5 and enters the abrasive mechanism 2, the upper and lower layers of the abrasive belt 20 of the abrasive mechanism 2 can contact the conductor 4. By controlling the rotation speed of the abrasive belt, axial brushing can be generated between the abrasive belt and the conductor 4, thereby removing oil stains and oxides on the surface of the conductor 4 and straightening the conductor 4. After the conductor 4 passes through the abrasive mechanism 2 and enters the extrusion mechanism 3, the extruder in the extrusion mechanism 3 can extrude a sheath 41 on the surface of the conductor 4, forming a protective effect on the conductor 4 and achieving an insulating effect.

[0059] Figure 2 This is a reference diagram of the position status of the purge mechanism and conductor. Figure 3 This is a reference diagram of the explosion state of the purge mechanism. Figure 2 and Figure 3 The purge mechanism 5 includes a housing 51, an impeller disk 52, and an air distribution disk 53. The housing 51 includes a tube portion 513 with both ends open and a cylinder portion 514 with one end open and the other closed. The end surface of the tube portion 513 facing the cylinder portion 514 and the end surface of the cylinder portion 514 facing the tube portion 513 are both provided with a flange 515. The two flanges 515 can be fastened by bolts after docking, so that the tube portion 513 and the cylinder portion 514 are docked. A supporting leg 512 is provided at the bottom of the housing 51. The supporting leg 512 can be provided at the bottom of the cylinder portion 514, the bottom of the tube portion 513, or the bottom of both the tube portion 513 and the cylinder portion 514, to ensure that the housing 51 can be stably placed coaxially with the conductor 4.

[0060] Figure 4 This is a reference diagram of the assembly status of the pipe and impeller disc. Figure 4 Combined with Figure 2 Several spacers 516 are installed on the inner wall of the tube 513, spaced apart within the same circumference. A bearing 54 is also installed inside the tube 513, with the outer ring of the bearing 54 connected to the spacers 516. This allows the spacers 516 to clamp and secure the bearing 54. The outer edge of the impeller disk 52 is thicker than the thickness of the bearing 54, ensuring that the impeller disk 52 is securely positioned within the inner ring of the bearing 54. Once an interference fit is established between the impeller disk 52 and the bearing 54, the impeller disk 52 can rotate reliably. Once the bearing 54 and impeller disk 52 are secured, the spaced-apart space of the spacers 516 creates an air outlet channel 517 between the outer wall of the outer ring of the bearing 54 and the inner wall of the tube 513.

[0061] See also Figure 3 The gas distribution plate 53 is positioned at the opening of the cylinder 514. The connection between the gas distribution plate 53 and the cylinder 514 can be fixed or removable. The gas distribution plate 53 is provided with a plurality of gas distribution holes 532, which are arranged more densely in the center of the plate 53 and less densely on the outer edges. The gas distribution plate 53 is separated from the sidewalls of the cylinder 514, thus forming an air cavity between the gas distribution plate 53 and the sidewalls of the cylinder 514. A gas supply pipe 55 is provided on the outer wall of the cylinder 514 to supply gas into the air cavity.

[0062] See also Figure 2 and Figure 4 The impeller disk 52 is provided with a first through-hole 521 in the center, the gas distribution pipe is provided with a second through-hole 531 in the center, and the sidewall of the housing 51 is provided with a third through-hole 511, specifically, the third through-hole 511 is located on the sidewall of the cylindrical portion 514. The conductor 4 passes through the first through-hole 521, the second through-hole 531, and the third through-hole 511 in sequence, thereby transporting the conductor 4 within the housing 51. During the transport of the conductor 4, the gas distribution pipe 55 continuously delivers gas into the air cavity, increasing the pressure within the cavity. At this time, the gas distribution disk 53 allows the gas to flow relatively evenly from the cavity toward the impeller disk 52. Because the gas distribution holes 532 are densely distributed in the center of the disk 53, specifically near the second through-hole 531, a relatively large amount of gas is blown out from this location, thereby achieving a purge effect on the surface of the conductor 4. After passing through the air distribution disk 53, a portion of the airflow directly contacts the impeller disk 52, while a portion is directly discharged outward through the air outlet channel 517. The air contacting the impeller disk 52 drives the impeller disk 52 to rotate. Furthermore, a plurality of bristles 522 are provided on the inner wall of the first through-hole 521. These bristles 522 extend radially along the impeller disk 52 and point toward the axis of the first through-hole 521. In this way, the bristles 522 provide an all-around wrapping effect on the conductor 4. When the impeller disk 52 rotates under the force of the air, the bristles 522 provide a radial sweeping effect on the conductor 4. This, in conjunction with the flowing air, reliably removes dust from the surface of the conductor 4 and discharges it outward through the first through-hole 521 or the air outlet channel 517. Furthermore, because the air flow direction is opposite to the conveying direction of the conductor 4, dust removal from the surface of the conductor 4 is maximized.

[0063] See also Figure 2 and Figure 3, the inner diameter of the first through-hole 521 is larger than twice the outer diameter of the conductor 4, the inner diameters of the second through-hole 531 and the third through-hole 511 are the same and both are larger than one times the outer diameter of the conductor 4. Specifically, the inner diameter of the first through-hole 521 can be much larger than the outer diameter of the conductor 4, while the inner diameters of the second through-hole 531 and the third through-hole 511 need to be as close to the outer diameter of the conductor 4 as possible. In this way, the overall size of the first through-hole 521 is larger, which can accommodate more and longer bristles 522, thereby improving the dust brushing and discharge effect, while the overall size of the second through-hole 531 and the third through-hole 511 is smaller, ensuring that the conductor 4 can pass through, thereby minimizing gas leakage at the second through-hole 531 and the third through-hole 511, thereby ensuring smoother gas flow.

[0064] Figure 5 is a schematic perspective view of the dent assembly. Figure 5 Combined with Figure 3 and Figure 2 At least one pair of denting assemblies 56 is provided on the side of the gas distribution disk 53 facing away from the impeller disk 52. The denting assemblies 56 are used to stamp grooves 42 on the surface of the conductor 4. Specifically, the denting assembly 56 includes a main rod 561 and a pressing wheel 562. At least two pipe clamps 5611 are adaptively mounted on the outer wall of the main rod 561. The outer walls of the pipe clamps 5611 are provided with studs 5613. By adjusting the relative position between the pipe clamps 5611 and the main rod 561, the studs 5613 can be inserted into the appropriate gas distribution holes 532. At this time, nuts 5614 are screwed onto the studs 5613 from the other side of the gas distribution disk 53 to secure the main rod 561. The studs 5613 only occupy the remaining gas distribution holes 532 and do not affect the flow of gas. A threaded hole 5612 is provided on the end surface of one or more pairs of main rods 561. Each pair of main rods 561 is coaxially arranged, so that the two threaded holes 5612 on the pair of main rods 561 are arranged relative to each other. An auxiliary rod 563 is adapted to be screwed into the threaded hole 5612. One end of the auxiliary rod 563 is screwed into the threaded hole 5612, and the other end of the auxiliary rod 563 is located outside the threaded hole 5612. A rotating seat 5630 is provided on the other end surface of the auxiliary rod 563. The rotating seat 5630 includes a rotating shaft, and a pressure wheel 562 is sleeved on the rotating shaft. The pressure wheel 562 can rotate around the rotating shaft or rotate synchronously with the rotating shaft. That is, the pressure wheel 562 can rotate around its own axis within the rotating seat 5630.

[0065] By adjusting the depth to which the auxiliary rod 563 is screwed into the threaded hole 5612, the position between the two pressing wheels 562 can be adjusted, thereby allowing the two pressing wheels 562 to simultaneously press against the outer wall of the conductor 4. In this way, when the conductor 4 is transportable in the housing 51, the friction between the conductor 4 and the pressing wheels 562 can cause the pressing wheels 562 to rotate, thereby forming grooves 42 on the surface of the conductor 4. By properly setting the number of pressing wheels 562, the number of grooves 42 formed on the surface of the conductor 4 can be controlled. The thickness of the pressing wheels 562 gradually decreases in the direction of diffusion from the axis to the surrounding area. In other words, the portion of the pressing wheel 562 that contacts the conductor 4 is relatively thin and sharp, which facilitates the pressing wheel 562 to press the grooves 42 on the surface of the conductor 4. When the conductor 4 with grooves 42 formed on its surface enters the extrusion mechanism 3, the sheath 41 extruded by the extrusion mechanism 3 can penetrate into the grooves 42, thereby reliably improving the adhesion effect of the sheath 41 on the surface of the conductor 4. Moreover, after the conductor 4 is radially brushed by the blowing mechanism 5 and axially brushed by the abrasive mechanism 2, its surface cleanliness is high, thereby maximizing the injection molding effect of the sheath 41.

[0066] This embodiment also discloses a high-temperature-resistant polyvinyl chloride insulated cable.

[0067] Figure 6 This is a reference diagram of the conductor assembly state. Figure 6 A high-temperature-resistant polyvinyl chloride insulated cable, manufactured using a high-temperature-resistant polyvinyl chloride insulated cable production device, comprises an insulating sheath 6 and a plurality of conductors 4 inserted within the insulating sheath 6. A sheath 41 is sheathed on the outer wall of the conductor 4, and the sheath 41 is embedded in a groove 42 of the conductor 4. A support frame 60 is also provided between the plurality of conductors 4. At this time, the sheath 41 is firmly attached to the surface of the conductor 4, allowing the conductor 4 to be reliably inserted into the insulating sheath 6, effectively preventing the sheath 41 from breaking or peeling off. Under the action of the support frame 60, the plurality of conductors 4 within the insulating sheath 6 are separated from each other, improving the heat dissipation effect between the plurality of conductors 4, thereby improving the overall high-temperature resistance of the cable.

[0068] The above-mentioned embodiments are only preferred embodiments of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and replacements made by technicians in this field based on the present application shall fall within the scope of protection required by the present application.

Claims

1. A high-temperature-resistant polyvinyl chloride insulated cable production device, comprising a discharge mechanism (1), an abrasive mechanism (2) and an extrusion mechanism (3), wherein the discharge mechanism (1) is used to release a single-strand conductor (4), the abrasive mechanism (2) is used to brush the surface of the conductor (4) in the axial direction, and the extrusion mechanism (3) is used to extrude a sheath (41) on the surface of the conductor (4), characterized in that: It also includes a purge mechanism (5) disposed between the discharge mechanism (1) and the abrasive mechanism (2), wherein the purge mechanism (5) includes a housing (51), an impeller disk (52), and an air distribution disk (53); The outer edge of the impeller disk (52) is connected to the inner wall of the housing (51) via a bearing (54), the outer edge of the air distribution disk (53) is in contact with the inner wall of the housing (51), and an air delivery pipe (55) is provided between the air distribution disk (53) and the side wall of the housing (51); A first through-hole (521) is provided in the middle of the impeller disc (52), a second through-hole (531) is provided in the middle of the air distribution pipe, and a third through-hole (511) is provided on the side wall of the housing (51). The conductor (4) passes through the first through-hole (521), the second through-hole (531) and the third through-hole (511) in sequence, and a brush (522) is provided in the first through-hole (521) to wrap the conductor (4).

2. A high-temperature-resistant polyvinyl chloride insulated cable production device according to claim 1, characterized in that: The bottom of the housing (51) is provided with a supporting leg (512), the housing (51) and the conductor (4) are coaxially arranged, the housing (51) comprises a tube portion (513) with both ends open and a cylinder portion (514) with one end open and the other end closed, the tube portion (513) and the cylinder portion (514) being connected via a flange (515); The outer ring of the bearing (54) is connected to the inner wall of the tube portion (513), the outer edge of the impeller disk (52) is connected to the inner ring of the bearing (54), and the outer edge of the air distribution disk (53) is connected to the inner wall of the cylinder portion (514).

3. The high-temperature-resistant polyvinyl chloride insulated cable production device according to claim 2, characterized in that: A plurality of spacers (516) are arranged at intervals along the same circumference on the inner wall of the tube portion (513), and the plurality of spacers (516) clamp the bearing (54), and an air outlet channel (517) is formed between the outer ring of the bearing (54) and the inner wall of the tube portion (513).

4. The high-temperature-resistant polyvinyl chloride insulated cable production device according to claim 2, characterized in that: The inner diameter of the first through-hole (521) is greater than twice the outer diameter of the conductor (4); the inner diameters of the second through-hole (531) and the third through-hole (511) are the same and both are greater than one times the outer diameter of the conductor (4); The bristles (522) all extend along the radial direction of the impeller disk (52) and all point toward the axis of the first through hole (521).

5. The high-temperature-resistant polyvinyl chloride insulated cable production device according to claim 4, characterized in that: The gas distribution plate (53) and the side wall of the cylinder (514) are separated from each other to form an air cavity. The gas distribution plate (53) is provided with a plurality of gas distribution holes (532). The gas delivery pipe (55) is used to transport gas into the air cavity. The gas can pass through the plurality of gas distribution holes (532). The flow direction of the gas in the housing (51) is opposite to the release direction of the conductor (4).

6. The high-temperature-resistant polyvinyl chloride insulated cable production device according to claim 4, characterized in that: The arrangement density of the air distribution holes (532) gradually decreases in a direction spreading from the axis of the second through hole (531) to the surrounding areas.

7. The high-temperature-resistant polyvinyl chloride insulated cable production device according to claim 4, characterized in that: At least one pair of denting components (56) is provided on a side of the air distribution disk (53) facing away from the impeller disk (52), and the denting components (56) are used to emboss grooves (42) on the surface of the conductor (4); The denting assembly (56) includes a main rod (561) and a pressure wheel (562). The main rod (561) is fixed to the gas distribution plate (53) through a pipe clamp (5611). A pair of opposite end faces of the main rods (561) are each provided with a threaded hole (5612). An auxiliary rod (563) is adapted to be screwed into the threaded hole (5612). The auxiliary rod (563) is provided with a rotating seat (5630) at one end outside the threaded hole (5612). The pressure wheel (562) is installed on the rotating seat (5630) and can rotate around the rotating axis of the rotating seat (5630). The pressure wheel (562) presses against the outer wall of the conductor (4).

8. The high-temperature-resistant polyvinyl chloride insulated cable production device according to claim 7, characterized in that: The pipe clamp (5611) is provided with a stud (5613), which is inserted into the corresponding air distribution hole (532). A nut (5614) is adapted to be screwed onto the stud (5613), and the nut (5614) and the pipe clamp (5611) are respectively located on both sides of the air distribution plate (53).

9. The high-temperature-resistant polyvinyl chloride insulated cable production device according to claim 7, characterized in that: The thickness of the pressing wheel (562) gradually decreases in a direction spreading from the axis to the surrounding areas.

10. A high-temperature-resistant polyvinyl chloride insulated cable, produced by the high-temperature-resistant polyvinyl chloride insulated cable production device according to claim 7, characterized in that: The invention comprises an insulating sleeve (6) and a plurality of conductors (4) inserted into the insulating sleeve (6); a protective sleeve (41) is provided on the outer wall of the conductor (4); the protective sleeve (41) is embedded in a groove (42) of the conductor (4); and a supporting frame (60) is provided between the plurality of conductors (4).

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