A cable production line

Abstract

The invention discloses a cable production line, belonging to the field of cable production. A cable production line includes a base and a coating mold, and also includes: a pay-off unit arranged on the base, used to pay-off the copper wire and reel in the cable after coating; a coating unit arranged in the coating mold, used to coat the copper wire, and the coating unit and the pay-off unit are electrically connected; a scraping unit arranged on the base and the coating mold, the pay-off unit drives the scraping unit to rotate along the outlet end of the coating mold, and is used to scrape the uneven position on the cable surface; a cooling unit is arranged on the coating mold, and the scraping unit drives the cooling unit to cool the coated cable; the invention can overcome the problem that the copper wire is easily offset and has different tightness when the insulation layer is coated, the cable production quality is poor, the insulation layer has low performance, and the service life is short.

Description

Technical Field

[0001] The invention relates to the technical field of cable production, and in particular to a cable production line. Background Art

[0002] Cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires, which are wrapped with insulating materials. It has a wide range of uses, including but not limited to power transmission, communication, data transmission and other fields. In the production process, the insulation layer coating can first be made into a molten state by an extruder, that is, to form an insulating glue, and then the insulating glue is coated on the copper wire by a cable insulation layer coating device.

[0003] At present, during the coating process of the cable insulation layer, the plastic extruded by the extruder may have uneven pressure, which will cause the copper wire to be subjected to different pressures during the coating process, resulting in the deviation of the copper wire and different tightness of the insulation layer coating, thus causing poor cable production quality; in addition, before coating, there may be dust on the surface of the copper wire, which affects the performance of the insulation layer and the service life of the insulation layer. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that copper wires are prone to deviation and different tightness when being coated with an insulation layer, resulting in poor cable production quality, low insulation layer performance and short service life, and to propose a cable production line.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cable production line comprises a base and a coating mold, and further comprises: a pay-off unit arranged on the base, used for unwinding copper wire and rewinding the cable after coating; a coating unit arranged in the coating mold, used for coating the copper wire, the coating unit and the pay-off unit are electrically connected; a scraping unit arranged on the base and the coating mold, the pay-off unit drives the scraping unit to rotate along the outlet end of the coating mold, and is used for scraping uneven positions on the cable surface; a cooling unit arranged on the coating mold, the scraping unit drives the cooling unit to cool the coated cable, wherein a cleaning unit is arranged in the coating mold, and the cooling unit drives the cleaning unit to clean the surface of the copper wire.

[0007] In order to facilitate the movement of the copper wire along the coating mold and ensure the tension of the copper wire during the coating process, preferably, the wire unwinding unit includes two groups of first mounting seats fixedly connected to the base, and the two groups of first mounting seats are rotatably connected with an unwinding roller and a winding roller, and a driving motor is fixedly connected to the first mounting seat close to the winding roller, and the output end of the driving motor is connected to the winding roller, wherein the winding roller and the unwinding roller are respectively located at two ends of the coating mold, and a positioning mechanism is provided on the base, and the positioning mechanism is located between the unwinding roller and the coating mold.

[0008] In order to ensure the stability of the position of the copper wire during movement, the positioning mechanism further includes a second mounting seat fixedly connected to the base, a positioning roller is rotatably connected to the second mounting seat, a coating channel is opened through the coating mold, and the positioning roller and the coating channel are located on the same plane.

[0009] In order to ensure that the insulating layer is tightly and stably coated and to avoid the deviation of the copper wire, the coating unit further includes a circulation cavity opened on the side of the coating mold close to the coating channel, the outer wall of the coating mold is provided with an injection hole connected to the circulation cavity, the interior of the coating mold is provided with a plurality of connecting holes connected to the circulation cavity and the coating channel, the interior of the coating mold is provided with a first installation cavity, the interior of the first installation cavity is fixedly connected with a plurality of groups of variable resistance rods, a movable ring is fixedly connected to the side of the variable resistance rod close to the connecting hole, a spring sleeved on the outside of the variable resistance rod is fixedly connected between the movable ring and the first installation cavity, wherein the circulation cavity and the first installation cavity are both arranged in an annular shape, the circulation cavity is located outside the coating channel, the first installation cavity is located between the coating channel and the circulation cavity, and the variable resistance rod is electrically connected to the driving motor.

[0010] In order to ensure the smoothness of the cable and the stability of the moving position of the copper wire, the scraping unit further includes a driven gear ring rotatably connected to one end of the coating mold close to the winding roller, and a scraper cone is fixedly connected to the side of the driven gear ring away from the coating mold, wherein a hole connected to the coating mold is opened at the center of the driven gear ring, and the axis of the scraper cone and the driven gear ring is located on the same straight line as the axis of the coating channel, and a linkage mechanism connected to the driven gear ring is provided on the base.

[0011] In order to facilitate the scraping of excess material on the cable surface according to the moving speed of the copper wire, the linkage mechanism further includes a fixed seat fixedly connected to the base, the fixed seat is rotatably connected to a rotating shaft, the end of the winding roller close to the rotating shaft is fixedly connected to a driving bevel gear, the end of the rotating shaft close to the winding roller is fixedly connected to a driven bevel gear meshing with the driving bevel gear, and the rotating shaft is fixedly connected to a driving gear meshing with the driven gear ring.

[0012] In order to ensure the stability of the shape of the copper wire when it is wound and reduce the waste of water resources, the cooling unit further includes a cooling chamber opened inside the coating mold, and the outer wall of the coating mold is fixedly connected with a water inlet pipe and a drain pipe connected to the two ends of the cooling chamber, and the coating mold is fixedly connected with a water pump connected to the drain pipe, wherein the cooling chamber is spirally arranged and sleeved on the outside of the coating channel, and the shaft end of the water pump is connected to the rotating shaft.

[0013] In order to facilitate the cleaning of dust on the surface of the copper wire, further, the cleaning unit includes a fixed plate fixedly connected to the cooling chamber, a water wheel is rotatably connected to the fixed plate, a linkage bevel gear is fixedly connected to the shaft end of the water wheel, a second installation chamber is provided on the side of the coating mold close to the water wheel, a reciprocating screw is rotatably connected inside the second installation chamber, and one end of the reciprocating screw close to the water wheel is fixedly connected to a connecting bevel gear meshing with the linkage bevel gear, a movable block is provided on the reciprocating screw to fit the inner wall of the second installation chamber, and a cylinder is fixedly connected between the two sides of the movable block and the second installation chamber, an exhaust channel is provided on the side of the coating mold close to the second installation chamber, a connecting pipe connected to the exhaust end of the cylinder and the exhaust channel is fixedly connected to the inside of the coating mold, an annular cavity is provided on the side of the coating mold close to the coating channel, and multiple groups of blowing holes connected to the coating channel and the annular cavity are provided in the coating mold, wherein the water wheel is located on the side of the cooling chamber close to the drain pipe, and the blowing holes are inclined, and the inclination direction is close to the end of the coating channel.

[0014] In order to facilitate the adjustment of the moving speed of the copper wire according to the injection pressure of the injection molding machine, further, the movable ring is inclined on one side close to the circulation cavity. When the pressure in the circulation cavity increases, the glue pushes the movable ring along the inclined direction of the movable ring to move into the first installation cavity. When the variable resistance rod is at its maximum size, the drive motor is in a stopped state. When the size of the variable resistance rod is reduced, the resistance connected to the drive motor is reduced.

[0015] In order to ensure the stability of the molten state of the insulating glue in the coating mold, it further includes a heating ring fixedly connected to the coating mold, and the heating ring is sleeved outside the coating channel and close to the movable ring.

[0016] Compared with the prior art, the present invention provides a cable production line, which has the following beneficial effects:

[0017] 1. The cable production line can make the copper wire pass through the coating channel through the pay-off unit with a certain tension. At the same time, the positioning mechanism can fix the moving position of the copper wire to prevent the copper wire from shifting during the movement and ensure the stability of the cable insulation coating.

[0018] 2. The cable production line can make the insulating glue flow evenly to the surface of the copper wire when it has a certain pressure through the coating unit, so as to avoid uneven force on the copper wire. On the one hand, it can avoid the deviation of the copper wire during the coating process, and on the other hand, it can ensure the compactness of the insulating layer, thereby improving the production quality of the cable. In addition, the coating speed of the copper wire can be controlled according to the pressure of the insulating glue, which greatly improves the production efficiency of the cable.

[0019] 3. The cable production line can drive the scraping unit to scrape the excess part of the cable surface after coating in a rotating manner through the pay-off unit to improve the smoothness of the cable surface. It can also drive the cooling unit to adjust the flow rate of cooling water according to the moving speed of the copper wire. While ensuring the formation of the cable insulation layer, it can reduce the waste of water resources and be more energy-saving and environmentally friendly.

[0020] 3. The cable production line can drive the cleaning unit through the cooling unit to clean the dust on the surface before the copper wire is coated to prevent the dust from affecting the performance of the cable insulation layer, thereby improving the safety of the cable during use and extending the service life of the insulation layer.

[0021] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can overcome the problems of easy deviation and different tightness of copper wire when it is coated with the insulation layer, poor cable production quality, low insulation layer performance and short service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a cable production line proposed by the present invention Figure 1 .

[0023] Figure 2 A schematic diagram of the structure of a cable production line proposed by the present invention Figure 2 .

[0024] Figure 3 The present invention is a schematic diagram of the cross-sectional structure of a coating mold in a cable production line proposed by the present invention.

[0025] Figure 4 This is a partial structural schematic diagram of a cable production line proposed by the present invention.

[0026] Figure 5 A cable production line proposed by the present invention Figure 3 Schematic diagram of the structure of part A.

[0027] Figure 6 A cable production line proposed by the present invention Figure 3 Schematic diagram of the structure of part B.

[0028] In the figure: 1, base; 2, coating mold; 3, first mounting seat; 4, unwinding roller; 5, winding roller; 6, driving motor; 7, coating channel; 8, second mounting seat; 9, positioning roller; 10, injection hole; 11, circulation cavity; 12, connecting hole; 13, first mounting cavity; 14, resistance lever; 15, spring; 16, movable ring; 17, heating ring; 18, driving bevel gear; 19, fixed seat; 20, rotating shaft; 21, Driven bevel gear; 22. Driving gear; 23. Driven gear ring; 24. Rubber scraper cone; 25. Cooling chamber; 26. Water inlet pipe; 27. Drain pipe; 28. Water pump; 29. ​​Fixed plate; 30. Water wheel; 31. Linked bevel gear; 32. Second installation chamber; 33. Reciprocating screw; 34. Connecting bevel gear; 35. Movable block; 36. Cylinder; 37. Exhaust channel; 38. Connecting pipe; 39. Ring chamber; 40. Blowing hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Example:

[0032] Reference Figure 1-Figure 6 A cable production line includes a base 1 and a coating mold 2, and also includes: a pay-off unit arranged on the base 1, used to unwind the copper wire and reel in the cable after coating; a coating unit arranged in the coating mold 2, used to coat the copper wire, and the coating unit and the pay-off unit are electrically connected; a scraping unit arranged on the base 1 and the coating mold 2, the pay-off unit drives the scraping unit to rotate along the outlet end of the coating mold 2, and is used to scrape the uneven position on the cable surface; a cooling unit arranged on the coating mold 2, the scraping unit drives the cooling unit to cool the coated cable, wherein a cleaning unit is arranged in the coating mold 2, and the cooling unit drives the cleaning unit to clean the surface of the copper wire.

[0033] Reference Figure 1-Figure 2The wire-releasing unit comprises two groups of first mounting seats 3 fixedly connected to the base 1, and the two groups of first mounting seats 3 are rotatably connected with an unwinding roller 4 and a winding roller 5, respectively. A driving motor 6 is fixedly connected to the first mounting seat 3 close to the winding roller 5, and the output end of the driving motor 6 is connected to the winding roller 5, wherein the winding roller 5 and the unwinding roller 4 are respectively located at two ends of the coating mold 2, and a positioning mechanism is provided on the base 1, and the positioning mechanism is located between the unwinding roller 4 and the coating mold 2, and the positioning mechanism comprises a second mounting seat 8 fixedly connected to the base 1, and a positioning roller 9 is rotatably connected to the second mounting seat 8, and a coating channel 7 is opened through the coating mold 2, and the positioning roller 9 and the coating channel 7 are located on the same plane.

[0034] The unwinding roller 4 is used for unwinding the copper wire, and the winding roller 5 is used for winding the cable. There is a certain friction between the unwinding roller 4 and the first mounting seat 3, so that the unwinding speed of the unwinding roller 4 matches the winding speed of the winding roller 5, and the copper wire has a certain tension during the movement. The positioning roller 9 can make the copper wire move along the center position of the coating channel 7 when entering the coating channel 7. During the coating process, the copper wire successively passes from the bottom of the unwinding roller 4 around the top of the positioning roller 9, penetrates into the coating channel 7, and is finally wound up through the top of the winding roller 5.

[0035] Reference Figure 3 and Figure 5 The coating unit includes a flow cavity 11 provided on the side of the coating mold 2 close to the coating channel 7, an injection hole 10 connected to the flow cavity 11 is provided on the outer wall of the coating mold 2, a plurality of connecting holes 12 connected to the flow cavity 11 and the coating channel 7 are provided inside the coating mold 2, a first installation cavity 13 is provided inside the coating mold 2, a plurality of variable resistance rods 14 are fixedly connected inside the first installation cavity 13, a movable ring 16 is fixedly connected to the side of the variable resistance rod 14 close to the connecting hole 12, a spring 15 which is sleeved on the outside of the variable resistance rod 14 is fixedly connected between the movable ring 16 and the first installation cavity 13, wherein the flow cavity 11 and the first installation cavity 13 are both arranged in an annular shape, and the flow cavity 11 and the first installation cavity 13 are ... The through cavity 11 is located outside the coating channel 7, the first installation cavity 13 is located between the coating channel 7 and the circulation cavity 11, the resistance rod 14 is electrically connected to the drive motor 6, and also includes a heating ring 17 fixedly connected to the coating mold 2, the heating ring 17 is sleeved on the outside of the coating channel 7, and is close to the movable ring 16, and the movable ring 16 is inclined on the side close to the circulation cavity 11. When the pressure in the circulation cavity 11 increases, the glue pushes the movable ring 16 to move into the first installation cavity 13 along the inclined direction of the movable ring 16. When the resistance rod 14 is at its maximum size, the drive motor 6 is in a stopped state. When the size of the resistance rod 14 is reduced, the resistance connected to the drive motor 6 is reduced.

[0036] It should be explained that the injection hole 10 is connected to the injection head of the injection molding machine. This is a conventional method in the prior art and is therefore not described in detail. The insulating glue first enters the circulation cavity 11. Initially, the glue will not flow directly into the coating channel 7, but will be stored in the circulation cavity 11. When the glue in the circulation cavity 11 is stored to a certain amount, the pressure between the internal glue and the movable ring 16 will increase. When the pressure increases to a threshold value, the movable ring 16 will be pushed to move into the first installation cavity 13. At this time, the glue will flow to the copper wire through the connecting hole 12 and have a certain pressure between the glue and the copper wire. This can not only make the copper wire evenly stressed in all directions during coating, but also ensure that the insulating layer is coated more tightly. At the same time, the rotation speed of the drive motor 6 is controlled according to the flow rate of the glue. While ensuring the stability of the insulating layer coating, the coating efficiency of the copper wire can be improved. In addition, the number of connecting holes 12 is not limited, as long as the copper wire can be completely coated and evenly distributed on the inner side of the coating channel 7.

[0037] Reference Figure 2 and Figure 4 The scraping unit includes a driven gear ring 23 rotatably connected to one end of the coating mold 2 close to the winding roller 5, and a scraper cone 24 is fixedly connected to the side of the driven gear ring 23 away from the coating mold 2, wherein a hole connected to the coating mold 2 is opened at the center of the driven gear ring 23, and the axis of the scraper cone 24 and the driven gear ring 23 is located on the same straight line as the axis of the coating channel 7, and a linkage mechanism connected to the driven gear ring 23 is provided on the base 1.

[0038] As the copper wire moves, the scraper cone 24 rotates continuously to scrape off the excess portion of the cable surface after coating, so that the cable size after production is more uniform and the surface is smoother. It should be explained that a hole can be opened on the outer wall of the scraper cone 24 so that the excess portion scraped off can be discharged through the hole. The scraper cone 24 can also position the cable during the coating process to prevent the cable from shifting. The driven gear ring 23 can be partially embedded in the coating mold 2 and rotatably connected to it.

[0039] Reference Figure 2 The linkage mechanism includes a fixed seat 19 fixedly connected to the base 1, a rotating shaft 20 is rotatably connected to the fixed seat 19, a driving bevel gear 18 is fixedly connected to the end of the winding roller 5 close to the rotating shaft 20, a driven bevel gear 21 meshing with the driving bevel gear 18 is fixedly connected to the end of the rotating shaft 20 close to the winding roller 5, and a driving gear 22 meshing with the driven gear ring 23 is fixedly connected to the rotating shaft 20.

[0040] The driving motor 6 drives the driving bevel gear 18 to rotate, and the driven bevel gear 21 drives the rotating shaft 20 and the driving gear 22 to rotate, thereby driving the driven gear ring 23 and the scraper cone 24 to rotate. In this way, the redundant part of the cable surface can be scraped off according to the moving speed of the cable, and at the same time, repeated scraping at the same position or no scraping at some positions can be avoided, thereby ensuring the scraping effect of the cable surface and improving the aesthetics of the cable surface.

[0041] Reference Figure 2 and Figure 3 The cooling unit includes a cooling chamber 25 opened inside the coating mold 2, and a water inlet pipe 26 and a drain pipe 27 connected to the two ends of the cooling chamber 25 are fixedly connected to the outer wall of the coating mold 2, and a water pump 28 connected to the drain pipe 27 is fixedly connected to the coating mold 2, wherein the cooling chamber 25 is spirally arranged and sleeved on the outside of the coating channel 7, and the shaft end of the water pump 28 is connected to the rotating shaft 20.

[0042] The water inlet pipe 26 is connected to the cooling water tank, which is a conventional method in the prior art and will not be elaborated on herein. The spiral cooling of the cooling chamber 25 can improve the cooling effect of the insulating layer, and the cooling water with a lower temperature will not directly cool the high-temperature insulating layer, thereby avoiding stress concentration in the insulating layer. The specific structure of the water pump 28 can refer to the technical solutions in the prior art, and technicians in this field can know it, so it will not be elaborated on here. In addition, according to the moving speed of the copper wire, the working efficiency of the water pump 28 (i.e., the flow rate of the cooling water) is controlled, which can not only ensure the cooling effect of the insulating layer, but also reduce the waste of water resources.

[0043] Reference Figure 3 and Figure 6The cleaning unit includes a fixed plate 29 fixedly connected to the cooling chamber 25, a water wheel 30 is rotatably connected to the fixed plate 29, a linkage bevel gear 31 is fixedly connected to the shaft end of the water wheel 30, a second installation chamber 32 is provided on the side of the coating mold 2 close to the water wheel 30, a reciprocating screw 33 is rotatably connected inside the second installation chamber 32, a connecting bevel gear 34 meshing with the linkage bevel gear 31 is fixedly connected to the end of the reciprocating screw 33 close to the water wheel 30, a movable block 35 that fits the inner wall of the second installation chamber 32 is provided on the reciprocating screw 33, and both sides of the movable block 35 are connected to the second A cylinder 36 is fixedly connected between the mounting cavities 32, an exhaust channel 37 is provided on the side of the coating mold 2 close to the second mounting cavity 32, a connecting pipe 38 connected with the exhaust end of the cylinder 36 and the exhaust channel 37 is fixedly connected inside the coating mold 2, an annular cavity 39 is provided on the side of the coating mold 2 close to the coating channel 7, and a plurality of blowing holes 40 connected with the coating channel 7 and the annular cavity 39 are provided in the coating mold 2, wherein the water wheel 30 is located on the side of the cooling cavity 25 close to the drain pipe 27, the blowing holes 40 are inclined, and the inclination direction is close to the end of the coating channel 7.

[0044] The cooling water drives the water wheel 30 to rotate during the flow, and drives the reciprocating screw 33 to rotate through the linkage bevel gear 31 and the connecting bevel gear 34, compressing the cylinders 36 on both sides respectively (the air inlet end of the cylinder 36 can pass through the coating mold 2 to communicate with the outside world), and continuously passes the compressed gas into the exhaust channel 37, and blows it to the copper wire through the blowing hole 40, so as to remove the dust on the surface of the copper wire. In addition, the number of blowing holes 40 is not limited, and the best is four to six groups, which are evenly distributed on the inner side of the coating channel 7. It should be explained that the movable block 35 is provided with a protrusion matching the reciprocating screw 33. This is a conventional method in the prior art, so it will not be elaborated.

[0045] In the present invention, when the copper wire is coated, the copper wire on the unwinding roller 4 is passed through the positioning roller 9, the coating channel 7 and the scraping cone 24 in sequence, and finally wound on the winding roller 5, and the injection head of the injection molding machine is connected to the injection hole 10. Initially, the drive motor 6 is turned on, the variable resistance rod 14 is at the maximum resistance value, and the drive motor 6 does not rotate. As the injection molding machine continuously injects glue into the flow cavity 11, when the glue reaches a certain amount and there is a certain pressure between the glue and the movable ring 16, the movable ring 16 is pushed to move upward, and the glue flows to the copper wire through the connecting hole 12. At the same time, the resistance value of the variable resistance rod 14 decreases, and the drive motor 6 starts to rotate, driving the copper wire to move, so as to coat the copper wire, and according to the flow speed of the glue, the stable moving speed of the copper wire is controlled, thereby improving the production quality of the cable;

[0046] When the driving motor 6 rotates, the driving bevel gear 18 and the driven bevel gear 21 drive the rotating shaft 20 and the driving gear 22 to rotate, thereby driving the driven gear ring 23 and the scraping cone 24 to rotate, scraping off the excess part of the cable surface, and making the cable avoid scraping more evenly; in addition, the rotating shaft 20 also drives the water pump 28 to rotate, extracting cooling water, so that the cooling water flows through the cooling chamber 25, and the flow rate of the cooling water can be adjusted according to the moving speed of the copper wire, while ensuring the cooling effect of the cable, it can reduce the waste of water resources;

[0047] When the cooling water flows, the water wheel 30 can convert the kinetic energy of the water flow into mechanical energy, drive the reciprocating screw 33 to rotate, compress the gas through the cylinder 36, and blow the gas to the copper wire through the blowing hole 40 to clean the dust on the surface of the copper wire, so as to ensure the use effect of the insulation layer and extend the service life of the insulation layer.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cable production line, comprising a base (1) and a coating mold (2), characterized in that: Also includes: A wire unwinding unit is arranged on the base (1), and is used for unwinding the copper wire and for rewinding the cable after coating; A coating unit arranged in the coating mold (2), used for coating the copper wire, the coating unit being electrically connected to the wire-releasing unit; A scraping unit is arranged on the base (1) and the coating mold (2), and the wire-releasing unit drives the scraping unit to rotate along the outlet end of the coating mold (2) to scrape uneven parts of the cable surface; A cooling unit is arranged on the coating mold (2), and the scraping unit drives the cooling unit to cool the coated cable, wherein a cleaning unit is arranged in the coating mold (2), and the cooling unit drives the cleaning unit to clean the surface of the copper wire; The unwinding unit comprises two groups of first mounting seats (3) fixedly connected to the base (1), the two groups of first mounting seats (3) being rotatably connected to an unwinding roller (4) and a winding roller (5), the first mounting seat (3) close to the winding roller (5) being fixedly connected to a driving motor (6), the output end of the driving motor (6) being connected to the winding roller (5), wherein the winding roller (5) and the unwinding roller (4) are respectively located at two ends of the coating mold (2), and a positioning mechanism is provided on the base (1), and the positioning mechanism is located between the unwinding roller (4) and the coating mold (2); The positioning mechanism comprises a second mounting seat (8) fixedly connected to the base (1), a positioning roller (9) being rotatably connected to the second mounting seat (8), a coating channel (7) penetrating the coating mold (2), and the positioning roller (9) and the coating channel (7) being located on the same plane; The coating unit comprises a flow cavity (11) formed on a side of the coating mold (2) close to the coating channel (7); an injection hole (10) connected to the flow cavity (11) is formed on the outer wall of the coating mold (2); a plurality of communication holes (12) connected to the flow cavity (11) and the coating channel (7) are formed inside the coating mold (2); a first installation cavity (13) is formed inside the coating mold (2); a plurality of variable resistance rods (14) are fixedly connected inside the first installation cavity (13); the variable resistance rods (14) are 14) A movable ring (16) is fixedly connected to one side close to the connecting hole (12), and a spring (15) sleeved on the outside of the resistance rod (14) is fixedly connected between the movable ring (16) and the first installation cavity (13), wherein the circulation cavity (11) and the first installation cavity (13) are both arranged in an annular shape, the circulation cavity (11) is located outside the covering channel (7), the first installation cavity (13) is located between the covering channel (7) and the circulation cavity (11), and the resistance rod (14) is electrically connected to the driving motor (6).

2. A cable production line according to claim 1, characterized in that: The scraping unit comprises a driven gear ring (23) rotatably connected to one end of the coating mold (2) close to the winding roller (5), and a scraping cone (24) is fixedly connected to the side of the driven gear ring (23) away from the coating mold (2). A hole connected to the coating mold (2) is provided at the center of the driven gear ring (23); the axes of the scraper cone (24) and the driven gear ring (23) are located on the same straight line as the axis of the coating channel (7); and a linkage mechanism connected to the driven gear ring (23) is provided on the base (1).

3. A cable production line according to claim 2, characterized in that: The linkage mechanism comprises a fixed seat (19) fixedly connected to the base (1), a rotating shaft (20) being rotatably connected to the fixed seat (19), a driving bevel gear (18) being fixedly connected to one end of the winding roller (5) close to the rotating shaft (20), a driven bevel gear (21) meshing with the driving bevel gear (18) being fixedly connected to one end of the rotating shaft (20) close to the winding roller (5), and a driving gear (22) meshing with a driven gear ring (23) being fixedly connected to the rotating shaft (20).

4. A cable production line according to claim 3, characterized in that: The cooling unit comprises a cooling chamber (25) opened inside the coating mold (2); a water inlet pipe (26) and a drain pipe (27) connected to two ends of the cooling chamber (25) are fixedly connected to the outer wall of the coating mold (2); a water pump (28) connected to the drain pipe (27) is fixedly connected to the coating mold (2); The cooling cavity (25) is arranged in a spiral shape and is sleeved outside the covering channel (7); and the shaft end of the water pump (28) is connected to the rotating shaft (20).

5. A cable production line according to claim 4, characterized in that: The cleaning unit comprises a fixing plate (29) fixedly connected to the cooling chamber (25), a water wheel (30) being rotatably connected to the fixing plate (29), a linkage bevel gear (31) being fixedly connected to the shaft end of the water wheel (30), a second mounting chamber (32) being provided on a side of the coating mold (2) close to the water wheel (30), a reciprocating screw (33) being rotatably connected inside the second mounting chamber (32), an end of the reciprocating screw (33) close to the water wheel (30) being fixedly connected to a connecting bevel gear (34) meshing with the linkage bevel gear (31), and a connecting bevel gear (34) meshing with the second mounting chamber is provided on the reciprocating screw (33). (32) an inner wall of the movable block (35), a cylinder (36) is fixedly connected between the two sides of the movable block (35) and the second installation cavity (32), an exhaust passage (37) is provided on the side of the coating mold (2) close to the second installation cavity (32), a connecting pipe (38) connected to the exhaust end of the cylinder (36) and the exhaust passage (37) is fixedly connected inside the coating mold (2), an annular cavity (39) is provided on the side of the coating mold (2) close to the coating passage (7), and a plurality of blowing holes (40) connected to the coating passage (7) and the annular cavity (39) are provided inside the coating mold (2), The water wheel (30) is located on a side of the cooling chamber (25) close to the drain pipe (27), and the blowing hole (40) is arranged in an inclined manner, with the inclination direction close to the end of the cladding channel (7).

6. A cable production line according to claim 1, characterized in that: The movable ring (16) is arranged at an angle on one side close to the circulation chamber (11); when the pressure in the circulation chamber (11) increases, the glue pushes the movable ring (16) along the inclined direction of the movable ring (16) to move into the first installation chamber (13); when the resistance rod (14) is at its maximum size, the drive motor (6) is in a stopped state; when the size of the resistance rod (14) decreases, the resistance connected to the drive motor (6) decreases.

7. A cable production line according to claim 1, characterized in that: It also includes a heating ring (17) fixedly connected to the coating mold (2), wherein the heating ring (17) is sleeved on the outside of the coating channel (7) and is close to the movable ring (16).

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