A wire drawing device for a cable conductor that prevents breakage

Abstract

The present invention relates to the technical field of metal wire drawing, and particularly relates to a wire drawing device for preventing wire breakage of a cable conductor, which includes a wire drawing box. A conductor outlet frame is provided on one side of the wire drawing box, and a drying and cleaning box is fixedly connected to the other side of the wire drawing box. A take-up reel is provided on the side of the drying and cleaning box away from the wire drawing box. An inlet guiding roller is provided above the conductor outlet frame. An upper driving roller is provided in the upper part of the wire drawing box, and a lower driving roller is provided in the lower part of the wire drawing box. An annealing box is provided between the upper driving roller and the lower driving roller. A wire drawing liquid pool is fixedly provided at the bottom of the wire drawing box, and the lower driving roller is located in the wire drawing liquid pool. A wire drawing die is also provided between the upper driving roller and the annealing box. A material removing mechanism is also provided between the wire drawing box and the inlet guiding roller. This device solves the problems that the copper wire is easily broken during the process of drawing the copper wire into a thin wire, and there are protruding parts with damage on the copper wire or some other substances are attached to block the wire drawing die, causing the copper wire to be broken.

Description

Technical Field

[0001] The present invention relates to the technical field of metal wire drawing, and particularly relates to a wire drawing device for a cable conductor that prevents breakage during drawing. Background Art

[0002] A cable is usually composed of several or several groups of wires (at least two wires in each group) twisted together. The wires in each group are insulated from each other and are often twisted around a central wire. The whole is wrapped with a highly insulating covering layer. Cables have the characteristics of being energized inside and insulated outside. There are power cables, control cables, compensating cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, and so on.

[0003] The conductors of cables mostly use metal wire rods. Before being used as conductors, the metal wire rods need to be subjected to wire drawing and annealing treatments, and then twisted together to form cable conductors. In the wire drawing and annealing treatments, a wire drawing machine is required. A wire drawing machine is a device that causes the conductor to undergo plastic deformation at normal temperature under a certain tensile force, passing through a die hole with a gradually decreasing diameter, so that the cross-section of the conductor is reduced to a thin wire while the length increases.

[0004] Cable conductors generally use metal copper wires. During the drawing process of copper wires, due to plastic deformation of the wire rods, the grains inside the wire rod structure are mutually extruded, deformed, and misaligned. At the same time, each grain also elongates and twists along the deformation direction. This situation is called cold working hardening, which is directly manifested as a decrease in the elongation rate of the wire rod. Therefore, the drawn wire rod must be annealed before it is suitable for manufacturing electric wires and cables. The purpose of annealing is to adjust and refine the internal structure of the grains, so that the mechanical and electrical properties of the drawn wire rod are restored to those before drawing. Initially, wire drawing and annealing of the wire drawing machine were carried out separately. The drawn copper wire was wound on a wire reel and annealed in a separate annealing furnace. After cooling, it was then payed off through a pay-off frame to manufacture electric wires and cables. This production method not only has a long production cycle, large equipment investment, but also a large floor area.

[0005] Existing wire drawing equipment is to anneal the wire after it is drawn by a wire drawing mechanism, then clean and dry it, and finally wind it up. For example, the Chinese patent document with the patent literature number CN111223616A discloses an integrated production equipment for continuously drawing and annealing electric wires and cables, which includes a pay-off frame, a wire drawing mechanism, a water tank, a take-up frame, an annealing box, and a water pump. The copper wire is drawn into a thin wire by the wire drawing mechanism, annealed in the annealing box, cleaned in the water tank, and wound up by the take-up frame.

[0006] In production, we found that when using the above wire drawing equipment, during the process of drawing copper wire into thin wire, continuously passing through the wire drawing die for wire drawing, due to the plastic deformation of the wire, the grains in the internal structure of the wire are extruded, deformed, and misaligned with each other. At the same time, each grain also elongates and twists along the deformation direction. Then the copper wire will harden and become brittle, with various stress concentrations, and the copper wire often breaks, requiring the staff to discover and re-thread it in time, which affects the production efficiency of the conductor and thus the production efficiency of the entire cable production line. During the transportation process, the copper wire will be bruised, generating protruding parts such as burrs or flash. When using the above wire drawing equipment, when the copper wire enters the wire drawing die, the diameter of the copper wire itself is larger than the aperture of the wire drawing die. When there are protruding parts caused by damage on the copper wire or some other substances are attached, the copper wire at that place will be stuck at the wire drawing die and cannot be stretched through, and thus be broken, requiring the staff to discover and re-thread it in time, which affects the production efficiency of the conductor and thus the production efficiency of the entire cable production line. Summary of the Invention

[0007] (1) Technical problems to be solved

[0008] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a wire drawing device for a cable conductor that prevents breakage, solving the problems existing in the prior art. This device solves the problems that the copper wire is easily broken during the process of drawing copper wire into thin wire, and the protruding parts caused by damage on the copper wire or some other substances are attached to block the wire drawing die, resulting in the breakage of the copper wire, affecting the production efficiency of the conductor and thus the production efficiency of the entire cable production line.

[0009] (2) Technical solutions

[0010] To achieve the above purpose, the present invention provides the following technical solutions: A wire drawing device for a cable conductor that prevents breakage, including a wire drawing box. On one side of the wire drawing box, there is a conductor outlet frame. On the other side of the wire drawing box, there is a fixed connection with a drying and cleaning box. On the side of the drying and cleaning box away from the wire drawing box, there is a take-up barrel. Above the conductor outlet frame, there is an inlet guiding roller. In the upper part of the wire drawing box, there is an upper driving roller. In the lower part of the wire drawing box, there is a lower driving roller. Between the upper driving roller and the lower driving roller, there is an annealing box. At the bottom of the wire drawing box, there is a fixed wire drawing liquid pool. The lower driving roller is located in the wire drawing liquid pool. Between the upper driving roller and the annealing box, there is also a wire drawing die. Between the wire drawing box and the inlet guiding roller, there is also a material removing mechanism.

[0011] Preferably, the material removing mechanism includes a material removing mechanism main body, a front cover of the material removing mechanism fixedly connected to one side of the material removing mechanism main body, and a rear cover of the material removing mechanism fixedly connected to the other side of the material removing mechanism main body. A receiving cavity is formed on one side of the material removing mechanism main body close to the front cover of the material removing mechanism, a moving circular cavity is formed on one side of the material removing mechanism main body close to the rear cover of the material removing mechanism, a wire outlet hole is formed in the middle of the material removing mechanism main body, a material removing inner column is arranged in the receiving cavity, a connecting rod is fixedly connected to one side of the material removing inner column, a moving block is fixedly connected to the other end of the connecting rod, the moving block is slidably connected to the moving circular cavity, a spring is further arranged between the moving block and the rear cover, a guiding opening is formed in the middle of the material removing inner column, a tool outlet groove is formed on the side of the guiding opening, symmetrical moving grooves are formed at the bottom of the tool outlet groove, a circular cutting tool is arranged in the tool outlet groove, and the bottom of the circular cutting tool is fixedly connected to the bottom of the receiving cavity.

[0012] Preferably, the circular cutting tool includes a cutting edge opening and support pieces symmetrically and fixedly connected to the bottom of the cutting edge opening. The support pieces pass through the moving grooves and are fixedly connected to the bottom of the receiving cavity.

[0013] Preferably, a wire inlet opening is formed in the middle of the front cover of the material removing mechanism, the diameter of the wire inlet opening is smaller than the diameter of the material removing inner column, and a wire outlet opening is formed in the middle of the rear cover of the material removing mechanism.

[0014] Preferably, a nitrogen channel is arranged on one side of the wire drawing box, the other end of the nitrogen channel is fixedly connected to a nitrogen valve, the nitrogen valve is connected to an external gas source, an exhaust channel is arranged on one side of the wire drawing box, the other end of the exhaust channel is fixedly connected to an exhaust valve, and the exhaust valve is connected to an external exhaust pipeline.

[0015] Preferably, a cooling and filtering mechanism is arranged on one side of the wire drawing liquid pool. The cooling and filtering mechanism includes a cooler, a cooler inlet pipe located between the wire drawing liquid pool and the cooler, and a cooler return pipe. A filter is further arranged in the middle of the cooler inlet pipe.

[0016] Preferably, a cleaning guide roller is arranged on the upper part of the drying and cleaning box, a cleaning driving roller is arranged on the lower part of the drying and cleaning box, a cleaning pool is fixedly arranged at the bottom of the drying and cleaning box, the cleaning driving roller is located in the cleaning pool, cleaning blocks are further arranged between the cleaning driving rollers, a blower is arranged on one side of the drying and cleaning box, an air connection duct is fixedly connected to the air outlet of the blower, the air connection duct passes through the side wall of the drying and cleaning box and is fixedly connected to a spiral air duct, and a plurality of air outlet openings are spirally and evenly distributed on the inner side wall of the spiral air duct close to the spiral center.

[0017] Preferably, a cooling and filtering mechanism is arranged on one side of the cleaning pool.

[0018] Preferably, a collection box is arranged at the bottom of the material removing mechanism.

[0019] Preferably, both the upper driving rollers and the lower driving rollers are multiple and the numbers of them correspond to each other. The tangent line between them is a vertical line, and the distances between the upper driving rollers and the distances between the lower driving rollers correspond to each other.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention provides a wire drawing device for a cable conductor that prevents breakage. In this device, the copper wire is pulled out from the conductor outlet frame of the copper wire coil and enters the wire drawing box. The copper wire first bypasses the upper driving roller and then is pulled vertically downward, then bypasses the lower driving roller and is pulled horizontally, and then bypasses another adjacent lower driving roller and is pulled vertically upward. After passing through the wire drawing die for the first wire drawing, the drawn copper wire enters the annealing box for annealing treatment. After passing through the annealing box, the copper wire bypasses another upper driving roller and is pulled horizontally, and then bypasses another adjacent upper driving roller and is pulled vertically downward. After passing through the wire drawing die for the second wire drawing, the drawn copper wire enters the annealing box for annealing treatment. After passing through the annealing box, the copper wire bypasses another lower driving roller and is pulled horizontally. In this way, wire drawing and annealing are repeated, which can eliminate the hardening, embrittlement, and stress generated during each wire drawing, and restore the physical properties of the copper wire before wire drawing. In this way, the copper wire is not easily broken during the wire drawing process.

[0023] 2. The present invention provides a wire drawing device for a cable conductor that prevents breakage. When a copper wire with burrs, rough edges, or attachments passes through the material removing mechanism, the copper wire cannot pass through the wire passing hole of the inner material removing column. At this time, the copper wire will drive the inner material removing column to slide into the accommodating cavity. The cutting tool groove on the inner material removing column will also slide into the accommodating cavity. When the circular cutting tool is exposed from the cutting tool groove, the circular cutting tool will cut off the burrs, rough edges, or attachments on the copper wire, enabling the copper wire to smoothly pass through the wire passing hole of the inner material removing column. After the inner material removing column loses the acting force of the copper wire, it will return to the outside of the accommodating cavity under the spring force of the spring, completing the material removing work for the burrs, rough edges, or attachments on the copper wire. In this way, the copper wire will not be broken, improving the production efficiency and product quality.

[0024] 3. The present invention provides a wire drawing device for a cable conductor that prevents breakage. The lower driving roller is arranged in the wire drawing liquid pool. Then, each time the copper wire passes through the lower driving roller, it will enter the wire drawing liquid pool for one cooling and adding wire drawing liquid. In this way, repeated cooling can further restore the physical properties of the copper wire before wire drawing. Repeatedly adding wire drawing liquid can better prevent the copper wire from oxidizing and discoloring, and can also play a lubricating role, improving the wire drawing accuracy, surface smoothness, reducing the loss of the wire drawing die, and increasing its service life.

[0025] 4. The present invention provides a wire drawing device for preventing wire breakage. During the air drying process of the copper wire, when the copper wire moves upward, it passes through a spiral air duct. The air outlets on the inner side wall of the spiral air duct blow air on the copper wire passing through the middle of the spiral air duct. At this time, since the air outlets are spirally distributed upward on the spiral air duct and the copper wire moves vertically upward, the liquid on the copper wire will be blown downward in a spiral manner. A large amount of liquid on the copper wire at the bottom of the spiral air duct will be dispersed and blown off. As the copper wire moves upward, the liquid on the copper wire is gradually dried. When the copper wire reaches the middle position of the spiral air duct, the liquid on the copper wire can be basically blown off. Then, the blowing from the middle to the top of the spiral air duct can dry the residual moisture on the copper wire, playing a role in drying. With the above structure, the liquid on the surface of the copper wire can be dried after being first dispersed and blown off, making the drying effect of the copper wire better. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the exterior of the present invention.

[0027] Figure 2 It is a schematic structural diagram of the interior of the present invention.

[0028] Figure 3 For the present invention Figure 2 It is a partial enlarged view at A in the present invention.

[0029] Figure 4 For the present invention Figure 2 It is a partial enlarged view at B in the present invention.

[0030] Figure 5 It is a schematic structural diagram of the material removing mechanism of the present invention.

[0031] Figure 6 It is a schematic structural diagram of the main body of the material removing mechanism of the present invention.

[0032] Figure 7 It is a schematic structural diagram of the front cover of the material removing mechanism of the present invention.

[0033] Figure 8 It is a schematic structural diagram of the rear cover of the material removing mechanism of the present invention.

[0034] Figure 9 It is a perspective view of the main body of the material removing mechanism of the present invention.

[0035] Figure 10 It is a perspective view of the main body of the material removing mechanism of the present invention from another perspective.

[0036] Figure 11 It is a schematic structural diagram of the front view of the inner material removing column of the present invention.

[0037] Figure 12 It is a schematic structural diagram of the left view of the inner material removing column of the present invention.

[0038] Figure 13 This is a three-dimensional view of the circular cutter of the present invention.

[0039] In the figure: 1 - wire drawing box, 2 - conductor outlet frame, 3 - drying and cleaning box, 4 - take-up reel, 5 - inlet guiding roller, 6 - upper driving roller, 7 - lower driving roller, 8 - annealing box, 9 - wire drawing liquid pool, 10 - nitrogen channel, 11 - nitrogen valve, 12 - exhaust channel, 13 - exhaust valve, 14 - cleaning guiding roller, 15 - cleaning driving roller, 16 - cleaning pool, 17 - cleaning block, 18 - fan, 19 - connecting air duct, 20 - spiral air duct, 21 - material removing mechanism, 22 - cooling and filtering mechanism, 23 - cooler, 24 - cooler inlet pipe, 25 - cooler return pipe, 26 - filter, 27 - air outlet, 28 - main body of the material removing mechanism, 29 - front cover of the material removing mechanism, 30 - rear cover of the material removing mechanism, 31 - accommodating cavity, 32 - inner material removing column, 33 - connecting rod, 34 - moving block, 35 - spring, 36 - moving circular cavity, 37 - circular cutter, 38 - cutter outlet groove, 39 - guiding port, 40 - wire outlet hole, 41 - wire inlet hole, 42 - wire outlet, 43 - movable groove, 44 - cutting edge, 45 - supporting piece, 46 - collection box, 47 - wire drawing die. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying Figure 1-13 drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] The present invention provides a technical solution: a wire drawing device for preventing wire breakage of a cable conductor, which includes a wire drawing box 1. On one side of the wire drawing box 1, there is a conductor outlet frame 2. The conductor outlet frame 2 is in the shape of a circular cage. The copper wire coil is drawn out from the conductor outlet frame 2 and then enters the wire drawing box 1. On the other side of the wire drawing box 1, there is a fixed connection with a drying and cleaning box 3. The drying and cleaning box 3 is fixedly connected to the wire drawing box 1 side by side. On the side of the drying and cleaning box 3 away from the wire drawing box 1, there is a take-up reel 4. The take-up reel 4 winds up the copper wire after wire drawing. On the upper part of the conductor outlet frame 2, there is an inlet guiding roller 5. The inlet guiding roller 5 guides the copper wire so that the copper wire enters the wire drawing box 1 smoothly. Inside the upper part of the wire drawing box 1, there is an upper driving roller 6. Inside the lower part of the wire drawing box 1, there is a lower driving roller 7. Both the upper driving roller 6 and the lower driving roller 7 are multiple and their numbers correspond to each other. The tangent line between them is a vertical line. The distance between the upper driving rollers 6 and the distance between the lower driving rollers 7 correspond to each other. Between the upper driving roller 6 and the lower driving roller 7, there is an annealing box 8. At the bottom inside the wire drawing box 1, there is a fixedly arranged wire drawing liquid pool 9. The lower driving roller 7 is located inside the wire drawing liquid pool 9. On one side of the wire drawing liquid pool 9, there is a cooling and filtering mechanism 22. The cooling and filtering mechanism 22 includes a cooler 23, a cooler inlet pipe 24 located between the wire drawing liquid pool 9 and the cooler 23, and a cooler return pipe 25. In the middle of the cooler inlet pipe 24, there is also a filter 26. Between the upper driving roller 6 and the annealing box 8, there is also a wire drawing die 47. Between the wire drawing box 1 and the inlet guiding roller 5, there is also a material removing mechanism 21. At the bottom of the material removing mechanism 21, there is a collection box 46. The material removing mechanism 21 can remove the burrs, rough edges or attachments on the copper wire so that the copper wire will not be broken. When in use, the copper wire coil is drawn out from the conductor outlet frame 2, passes through the material removing mechanism 21 and then enters the wire drawing box 1. On the upper part of the conductor outlet frame 2, there is an inlet guiding roller 5. The inlet guiding roller 5 guides the copper wire so that the copper wire enters the wire drawing box 1 smoothly. The copper wire that enters the wire drawing box 1 smoothly first bypasses the upper driving roller 6 and then is pulled out vertically downward, then bypasses the lower driving roller 7 and is pulled out horizontally, then bypasses another adjacent lower driving roller 7 and is pulled out vertically upward, and undergoes the first wire drawing through the wire drawing die 47. After wire drawing, the copper wire enters the annealing box 8 for annealing treatment. After the copper wire passes through the annealing box 8, it bypasses another upper driving roller 6 and is pulled out horizontally, then bypasses another adjacent upper driving roller 6 and is pulled out vertically downward, and undergoes the second wire drawing through the wire drawing die 47. After wire drawing, the copper wire enters the annealing box 8 for annealing treatment. After the copper wire passes through the annealing box 8, it bypasses another lower driving roller 7 and is pulled out horizontally. In this way, wire drawing and annealing are carried out repeatedly, and the hardening, embrittlement and stress generated by each wire drawing can be eliminated, and the physical properties of the copper wire before wire drawing can be restored. In this way, the copper wire is not easily broken during wire drawing. Moreover, we set the lower driving roller 7 in the wire drawing liquid pool 9. Then, every time the copper wire passes through the lower driving roller 7, it will enter the wire drawing liquid pool 9. After one cooling and adding wire drawing liquid, repeated cooling can further restore the physical properties of the copper wire before wire drawing. Repeatedly adding wire drawing liquid can better prevent the copper wire from oxidizing and discoloring, and can also play a lubricating role, improving the wire drawing accuracy and surface smoothness.Reduce the loss of the wire drawing die 47 and increase its service life.

[0042] The material removing mechanism 21 includes a material removing mechanism main body 28, a front cover 29 of the material removing mechanism fixedly connected to one side of the material removing mechanism main body 28, and a rear cover 30 of the material removing mechanism fixedly connected to the other side of the material removing mechanism main body 28. The material removing mechanism main body 28 is a cylinder. A cylindrical accommodating cavity 31 is provided on one side of the material removing mechanism main body 28 close to the front cover 29 of the material removing mechanism. A long and round moving cavity 36 is provided on the side of the material removing mechanism main body 28 close to the rear cover 30 of the material removing mechanism. A wire outlet hole 40 is provided in the middle of the material removing mechanism main body 28 for passing copper wires. A material removing inner column 32 is provided in the accommodating cavity 31. The material removing inner column 32 is also cylindrical. The material removing inner column 32 can slide in the accommodating cavity 31. One side of the material removing inner column 32 is fixedly connected with a connecting rod 33. The other end of the connecting rod 33 is fixedly connected with a moving block 34. The moving block 34 is slidably connected with the moving cavity 36. A spring 35 is further provided between the moving block 34 and the rear cover 30, so that the material removing inner column 32 can telescopically slide in the accommodating cavity 31. A flared guiding port 39 is provided in the middle of the material removing inner column 32. The flared guiding port 39 can roll the cut burrs or attachments on the copper wire along the inclined surface of the flared opening into the collection box 46. A wire passing hole is provided in the middle of the material removing inner column 32. The wire passing hole communicates with the small opening of the guiding port 39. A knife outlet groove 38 is provided on the side of the guiding port 39. The knife outlet groove 38 is an annular groove. Symmetrical movable grooves 43 are provided at the bottom of the knife outlet groove 38. A circular cutting knife 37 is provided in the knife outlet groove 38. The circular cutting knife 37 includes a cutting edge 44 and support pieces 45 symmetrically and fixedly connected to the bottom of the cutting edge 44. The cutting edge 44 is annular. The support pieces 45 pass through the movable grooves 43 and are fixedly connected to the bottom of the accommodating cavity 31. The support pieces 45 and the movable grooves 43 are fan-shaped arc-shaped pieces, similar to the shape of a magnet. The front cover 29 of the material removing mechanism is disc-shaped. A wire inlet 41 is provided in the middle thereof. The diameter of the wire inlet 41 is smaller than the diameter of the material removing inner column 32, so that the front cover 29 of the material removing mechanism can cover the material removing inner column 32 to fix the material removing inner column 32. The diameter of the wire inlet 41 is larger than that of the guiding port 39 to facilitate the passage of copper wires. A wire outlet 42 is provided in the middle of the rear cover 30 of the material removing mechanism for the passage of copper wires. When there are burrs or attachments on the copper wire passing through the material removing mechanism 21, the copper wire cannot pass through the wire passing hole of the material removing inner column 32. At this time, the copper wire will drive the material removing inner column 32 to slide into the accommodating cavity 31. The knife outlet groove 38 on the material removing inner column 32 will also slide into the accommodating cavity 31. When the circular cutting knife 37 is exposed from the knife outlet groove 38, the circular cutting knife 37 will cut off the burrs or attachments on the copper wire, so that the copper wire can smoothly pass through the wire passing hole of the material removing inner column 32. After the material removing inner column 32 loses the acting force of the copper wire, it returns to the outside of the accommodating cavity 31 under the spring force of the spring 35, completing the material removing work of the burrs or attachments on the copper wire. In this way, the copper wire will not be broken, improving the production efficiency and product quality.

[0043] One side of the wire drawing box 1 is provided with a nitrogen channel 10. The other end of the nitrogen channel 10 is fixedly connected with a nitrogen valve 11. The nitrogen valve 11 is connected with an external gas source. One side of the wire drawing box 1 is provided with an exhaust channel 12. The other end of the exhaust channel 12 is fixedly connected with an exhaust valve 13. The exhaust valve 13 is connected with an external exhaust pipeline. In the wire drawing box 1, nitrogen can prevent the oxidation of the copper wire after heating, and it is not easy to generate an oxide layer on the surface of the copper wire. The oxide layer will produce protrusions during the subsequent coating of the insulating layer, affecting the product quality and production efficiency.

[0044] The upper part of the drying and cleaning box 3 is provided with a cleaning guide roller 14. The lower part of the drying and cleaning box 3 is provided with a cleaning driving roller 15. The bottom of the drying and cleaning box 3 is fixedly provided with a cleaning pool 16. The cleaning driving roller 15 is located in the cleaning pool 16. One side of the cleaning pool 16 is provided with a cooling and filtering mechanism 22. A cleaning block 17 is also arranged between the cleaning driving rollers 15. The cleaning block 17 is a sponge block, which can wipe the surface of the copper wire and further clean the copper wire. One side of the drying and cleaning box 3 is provided with a blower 18. The air outlet of the blower 18 is fixedly connected with a connecting air duct 19. The connecting air duct 19 passes through the side wall of the drying and cleaning box 3 and is fixedly connected with a spiral air duct 20. A plurality of air outlets 27 are spirally and evenly distributed on the inner side wall of the spiral air duct 20 close to the spiral center. During use, the copper wire after repeated wire drawing and annealing is horizontally pulled out from the side wall of the wire drawing box 1 and enters the drying and cleaning box 3. The copper wire bypasses the cleaning guide roller 14 and then vertically enters the cleaning pool 16, and then is horizontally pulled out after bypassing the cleaning driving roller 15. The copper wire passes through the middle of the cleaning block 17, and then is vertically pulled up after bypassing another adjacent cleaning driving roller 15. The copper wire passes through the spiral air duct 20, and the air outlets on the inner side wall of the spiral air duct dry the liquid on the copper wire. The dried copper wire bypasses another cleaning guide roller 14 and then is pulled out and enters the take-up reel 4. The take-up reel 4 winds up the copper wire after wire drawing. The copper wire is cleaned and dried in the drying and cleaning box 3.

[0045] Working principle: The copper wire coil is pulled out from the conductor outlet frame 2, passes through the material removing mechanism 21, and then enters the wire drawing box 1. An inlet guiding roller 5 is provided above the conductor outlet frame 2. The inlet guiding roller 5 guides the copper wire so that the copper wire enters the wire drawing box 1 straightly. The copper wire that enters the wire drawing box 1 straightly first bypasses the upper driving roller 6 and then is pulled out vertically downward, then bypasses the lower driving roller 7 and is pulled out horizontally, and then bypasses another adjacent lower driving roller 7 and is pulled out vertically upward. It undergoes the first wire drawing through the wire drawing die 47. After wire drawing, the copper wire enters the annealing box 8 for annealing treatment. After passing through the annealing box 8, the copper wire bypasses another upper driving roller 6 and is pulled out horizontally, then bypasses another adjacent upper driving roller 6 and is pulled out vertically downward, and undergoes the second wire drawing through the wire drawing die 47. After wire drawing, the copper wire enters the annealing box 8 for annealing treatment. After passing through the annealing box 8, the copper wire bypasses another lower driving roller 7 and is pulled out horizontally. In this way, wire drawing and annealing are carried out repeatedly. The copper wire that has undergone repeated wire drawing and annealing is pulled out horizontally through the side wall of the wire drawing box 1 and enters the drying and cleaning box 3. The copper wire bypasses the cleaning guiding roller 14 and then enters the cleaning pool 16 vertically downward, and then bypasses the cleaning driving roller 15 and is pulled out horizontally. The copper wire passes through the middle of the cleaning block 17, and then bypasses another adjacent cleaning driving roller 15 and is pulled out vertically upward. The copper wire passes through the spiral air duct 20, and the air outlet on the inner side wall of the spiral air duct 20 blows dry the liquid on the copper wire. The dried copper wire bypasses another cleaning guiding roller 14 and then is pulled out and enters the take-up barrel 4. The copper wire is cleaned and dried in the drying and cleaning box 3, and the take-up barrel 4 winds up the copper wire after wire drawing is completed;

[0046] Among them, during the wire drawing and annealing process, nitrogen is introduced through the nitrogen channel 10, which can prevent the oxidation of the copper wire after heating and is not easy to generate an oxide layer on the surface of the copper wire. The oxide layer will produce protrusions during the subsequent coating of the insulating layer, affecting the product quality and production efficiency;

[0047] Among them, a cooling and filtering mechanism 22 is provided on one side of the wire drawing liquid pool 9. The wire drawing liquid enters the cooler 23 through the cooler inlet pipe 24 for cooling. The cooled wire drawing liquid flows out from the cooler return pipe 25 at the other end of the cooler 23 and returns to the wire drawing liquid pool 9. A filter 26 is arranged in the middle of the cooler inlet pipe 24 to filter the wire drawing liquid and keep the wire drawing liquid clean;

[0048] Among them, adding sponge blocks in the drying and cleaning box 3 can wipe the surface of the copper wire, further clean the copper wire, and improve the cleaning effect. During the air-drying process of the copper wire, when the copper wire moves upward, the copper wire passes through the spiral air duct 20, and the air outlet on the inner side wall of the spiral air duct 20 blows air on the copper wire passing through the middle of the spiral air duct 20. At this time, since the air outlet 27 is spirally distributed upward on the spiral air duct 20 and the copper wire moves vertically upward, the liquid on the copper wire will be blown downward in a spiral manner. A large amount of liquid on the copper wire at the bottom of the spiral air duct 20 will be dispersed and blown off. As the copper wire moves upward, the liquid on the copper wire will be dried one by one. When the copper wire reaches the middle position of the spiral air duct 20, the liquid on the copper wire can be basically blown off. Then, the blowing from the middle to the top of the spiral air duct 20 can dry the residual moisture on the copper wire, playing a role in drying and making the air-drying effect of the copper wire better.

Claims

1. A wire drawing device for preventing wire breakage of a cable conductor, comprising a wire drawing box (1), a conductor outlet frame (2) is arranged on one side of the wire drawing box (1), a drying and cleaning box (3) is fixedly connected to the other side of the wire drawing box (1), a wire collecting barrel (4) is arranged on the side of the drying and cleaning box (3) away from the wire drawing box (1), an inlet guiding roller (5) is arranged above the conductor outlet frame (2), and it is characterized in that: An upper driving roller (6) is arranged at the upper part inside the wire drawing box (1), a lower driving roller (7) is arranged at the lower part inside the wire drawing box (1), an annealing box (8) is arranged between the upper driving roller (6) and the lower driving roller (7), a wire drawing liquid pool (9) is fixedly arranged at the bottom inside the wire drawing box (1), the lower driving roller (7) is located inside the wire drawing liquid pool (9), a wire drawing die (47) is further arranged between the upper driving roller (6) and the annealing box (8), and a material removing mechanism (21) is further arranged between the wire drawing box (1) and the incoming wire guiding roller (5); The material removing mechanism (21) includes a material removing mechanism main body (28), a material removing mechanism front cover (29) fixedly connected to one side of the material removing mechanism main body (28), and a material removing mechanism rear cover (30) fixedly connected to the other side of the material removing mechanism main body (28). A receiving cavity (31) is formed on one side of the material removing mechanism main body (28) close to the material removing mechanism front cover (29), a moving circular cavity (36) is formed on one side of the material removing mechanism main body (28) close to the material removing mechanism rear cover (30), a wire outlet hole (40) is formed in the middle of the material removing mechanism main body (28), a material removing inner column (32) is arranged in the receiving cavity (31), a connecting rod (33) is fixedly connected to one side of the material removing inner column (32), a moving block (34) is fixedly connected to the other end of the connecting rod (33), the moving block (34) is slidably connected to the moving circular cavity (36), a spring (35) is further arranged between the moving block (34) and the rear cover (30), a guiding port (39) is formed in the middle of the material removing inner column (32), a cutting tool slot (38) is formed on the side of the guiding port (39), symmetric movable slots (43) are formed at the bottom of the cutting tool slot (38), a circular cutting tool (37) is arranged in the cutting tool slot (38), and the bottom of the circular cutting tool (37) is fixedly connected to the bottom of the receiving cavity (31); The circular cutting tool (37) includes a cutting edge opening (44) and supporting pieces (45) symmetrically and fixedly connected to the bottom of the cutting edge opening (44), and the supporting pieces (45) are fixedly connected to the bottom of the receiving cavity (31) after passing through the movable slots (43).

2. The wire drawing device for preventing wire breakage according to claim 1, wherein: An incoming wire port (41) is formed in the middle of the material removing mechanism front cover (29), the diameter of the incoming wire port (41) is smaller than the diameter of the material removing inner column (32), and an outgoing wire port (42) is formed in the middle of the material removing mechanism rear cover (30).

3. The wire drawing device for preventing wire breakage according to claim 1, characterized in that: A nitrogen channel (10) is arranged on one side of the wire drawing box (1), the other end of the nitrogen channel (10) is fixedly connected to a nitrogen valve (11), the nitrogen valve (11) is connected to an external gas source, an exhaust channel (12) is arranged on one side of the wire drawing box (1), the other end of the exhaust channel (12) is fixedly connected to an exhaust valve (13), and the exhaust valve (13) is connected to an external exhaust pipeline.

4. The wire drawing device for preventing wire breakage according to claim 3, wherein: On one side of the wire drawing liquid pool (9), there is a cooling and filtering mechanism (22). The cooling and filtering mechanism (22) includes a cooler (23), a cooler inlet pipe (24) located between the wire drawing liquid pool (9) and the cooler (23), and a cooler return pipe (25). A filter (26) is also provided in the middle of the cooler inlet pipe (24).

5. The wire drawing device for preventing wire breakage according to claim 1, characterized in that: On the upper part of the drying and cleaning box (3), there is a cleaning guide roller (14). On the lower part of the drying and cleaning box (3), there is a cleaning driving roller (15). At the bottom of the drying and cleaning box (3), a cleaning pool (16) is fixedly provided. The cleaning driving roller (15) is located in the cleaning pool (16). Between the cleaning driving rollers (15), there are also cleaning blocks (17). On one side of the drying and cleaning box (3), there is a blower (18). The air outlet of the blower (18) is fixedly connected to a connecting air duct (19). The connecting air duct (19) passes through the side wall of the drying and cleaning box (3) and is fixedly connected to a spiral air duct (20). A number of air outlets (27) are spirally and evenly distributed on the inner side wall of the spiral air duct (20) close to the spiral center.

6. The wire drawing device for preventing wire breakage according to claim 5, wherein: On one side of the cleaning pool (16), there is a cooling and filtering mechanism (22).

7. The wire drawing device for preventing wire breakage according to claim 1, characterized in that: At the bottom of the material removing mechanism (21), there is a collection box (46).

8. The wire drawing device for preventing wire breakage according to claim 1, characterized in that: Both the upper driving rollers (6) and the lower driving rollers (7) are multiple and their numbers correspond to each other. The tangent line between them is a vertical line. The distance between the upper driving rollers (6) corresponds to the distance between the lower driving rollers (7).

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