Cable conductor drawing device

Abstract

The present invention relates to the technical field of metal wire drawing, in particular to a cable conductor wire drawing device, comprising a wire drawing box, a conductor outlet frame is provided on one side of the wire drawing box, a drying and cleaning box is fixedly connected to the wire drawing box on the other side, a wire take-up barrel is provided on the side of the drying and cleaning box away from the wire drawing box, a wire feed guide roller is provided on the upper part of the conductor outlet frame, an upper active roller is provided in the upper part of the wire drawing box, a lower active roller is provided in the lower part of the wire drawing box, an annealing box is provided between the upper active roller and the lower active roller, a wire drawing liquid pool is provided at the bottom of the wire drawing box, the lower active roller is located in the wire drawing liquid pool, a wire drawing die is further provided between the upper active roller and the annealing box, a material removing mechanism is further provided between the wire drawing box and the wire feed guide roller, a spray box is provided between the upper active roller, the spray box is connected to a spray pipe, the spray pipe is connected to a spray liquid delivery pipe, the spray liquid delivery pipe is connected to a liquid pump, the liquid pump is connected to a liquid inlet pipe, and the bottom of the spray box is connected to a spray return pipe, which solves the problems of copper wire being easily broken and poor diameter accuracy after wire drawing.

Description

Technical Field

[0001] The present invention relates to the technical field of metal wire drawing, and in particular to a cable conductor wire drawing device. Background Art

[0002] Cables are typically made up of several or several groups of conductors (at least two in each group) twisted together. Each group of conductors is insulated from each other and often twisted around a core. The entire cable is covered with a highly insulating coating. Cables are characterized by internal conduction and external insulation. Cables include power cables, control cables, compensating cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, and aluminum alloy cables.

[0003] The conductors of cables are mostly made of metal wires. Before being used as conductors, the metal wires need to be drawn and annealed, and then twisted into cable conductors. During the drawing and annealing process, a wire drawing machine is required. The wire drawing machine is a device that plastically deforms the conductor through a gradually decreasing die hole under a certain tensile force at room temperature, reducing the conductor cross-section into filaments while increasing the length.

[0004] Cable conductors typically use copper wire. During the drawing process, plastic deformation occurs, causing the wire's internal grains to squeeze, deform, and misalign. Simultaneously, the grains stretch and twist along the deformation direction. This condition, known as cold work hardening, manifests itself as a decrease in the wire's elongation. Therefore, the drawn wire must be annealed before it's suitable for wire and cable production. Annealing aims to adjust and refine the wire's internal grain structure, restoring the mechanical and electrical properties of the drawn wire to their pre-drawn state. Initially, wire drawing machines performed drawing and annealing separately. The drawn copper wire was collected on a reel, annealed in a separate annealing furnace, and then cooled before being released from a payout rack to produce wire and cable. This production method not only has a long production cycle, but also requires significant equipment investment and floor space.

[0005] The existing wire drawing equipment is to draw the wire through a wire drawing mechanism, then anneal it through an annealing mechanism, and then clean and dry it before finally taking it up. For example, the Chinese patent document with patent document number CN111223616A discloses an integrated production equipment for continuous drawing and withdrawing wires and cables, which includes a wire drawing frame, a wire drawing mechanism, a water tank, a wire take-up frame, an annealing box and a water pump. The copper wire is drawn into filaments through the wire drawing mechanism, annealed in the annealing box, cleaned in a water tank, and taken up by the wire take-up frame.

[0006] During production, we found that when the above-mentioned wire drawing equipment is used, the copper wire is continuously drawn through the wire drawing die in the process of drawing the copper wire into thin filaments. Due to the plastic deformation of the wire, the grains in the internal structure of the wire are squeezed, deformed, and dislocated with each other. At the same time, the grains also stretch and twist along the deformation direction. The copper wire will harden and become brittle, various stresses will be concentrated, and the copper wire will often be broken. The staff needs to discover and rethread it in time, which affects the production efficiency of the conductor and thus the production efficiency of the entire cable production line. The copper wire will be damaged during transportation, resulting in protruding parts such as burrs or burrs. When the above-mentioned wire drawing equipment is used, the copper wire diameter itself is larger than the aperture of the wire drawing die when entering the wire drawing die. When there are protruding parts caused by damage on the copper wire or some other substances are attached to it, the copper wire at that location will be stuck in the wire drawing die and cannot be stretched through, thus being broken. The staff needs to discover and rethread it in time, which affects the production efficiency of the conductor and thus the production efficiency of the entire cable production line.

[0007] The present invention combines the drawing and annealing of copper wire, and enters the annealing box for annealing after each drawing, and repeats the drawing and annealing, thereby solving the problem of copper wire breaking caused by one-time drawing of the copper wire. It also solves the problem of copper wire blocking the drawing die and causing the copper wire to be broken by removing the protruding parts caused by damage or some other substances attached to the copper wire through a material removal mechanism before the copper wire enters the drawing die. However, while using the above structure to solve the above problem, since the copper wire is not cooled down when it enters the drawing die from the upper active roller for drawing, the temperature is relatively high, and no drawing liquid is added for lubrication. Therefore, the diameter accuracy of the produced copper wire is insufficient, resulting in the copper wire having different insulation layer thicknesses after being subsequently coated with the insulation layer, which is easily broken down by current under high voltage, resulting in an increase in the unqualified rate of the product and a reduction in product quality. Summary of the Invention

[0008] (1) Technical problems solved

[0009] In view of the deficiencies in the prior art, the present invention aims to provide a cable conductor drawing device that solves the problems existing in the prior art. The device solves the problems that the copper wire is easily broken during the process of drawing the copper wire into thin wire, and the protrusions caused by damage on the copper wire or some other substances attached to the copper wire block the drawing die and cause the copper wire to be broken, thereby affecting the production efficiency of the conductor, thereby affecting the production efficiency of the entire cable production line, and the resulting insufficient accuracy of the copper wire diameter, resulting in the copper wire having different insulation layer thicknesses after subsequent insulation coating, which is easily broken down by current under high voltage, resulting in an increase in the product's unqualified rate and reduced product quality.

[0010] (2) Technical solution

[0011] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a cable conductor wire drawing device, comprising a wire drawing box, a conductor outlet frame is provided on one side of the wire drawing box, a drying and cleaning box is fixedly connected to the wire drawing box on the other side, a wire take-up barrel is provided on the side of the drying and cleaning box away from the wire drawing box, a wire feed guide roller is provided on the upper part of the conductor outlet frame, an upper active roller is provided in the upper part of the wire drawing box, a lower active roller is provided in the lower part of the wire drawing box, an annealing box is provided between the upper active roller and the lower active roller, a wire drawing liquid pool is fixedly provided at the bottom of the wire drawing box, the lower active roller is located in the wire drawing liquid pool, a wire drawing die is also provided between the upper active roller and the annealing box, a material removal mechanism is also provided between the wire drawing box and the wire feed guide roller, a spray box is provided between the upper active roller, a spray pipe is fixedly connected to the top of the spray box, the spray pipe is fixedly connected to a spray liquid delivery pipe, one end of the spray liquid delivery pipe is fixedly connected to a liquid pump, the other end of the liquid pump is fixedly connected to a liquid inlet pipe, and the bottom of the spray box is fixedly connected to a spray return pipe.

[0012] Preferably, a spray chamber is provided at the top of the spray box, and spray heads are arranged at the bottom of the spray chamber.

[0013] Preferably, the material removal mechanism includes a material removal mechanism main body, a material removal mechanism front cover fixedly connected to one side of the material removal mechanism main body and a material removal mechanism rear cover fixedly connected to the other side of the material removal mechanism main body, a accommodating cavity is provided on the side of the material removal mechanism main body close to the material removal mechanism front cover, a movable circular cavity is provided on the side of the material removal mechanism main body close to the material removal mechanism rear cover, a wire outlet hole is provided in the middle of the material removal mechanism main body, a material removal inner column is provided in the accommodating cavity, a connecting rod is fixedly connected to one side of the material removal 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 also provided between the moving block and the rear cover, a guide opening is provided in the middle of the material removal inner column, a knife outlet groove is provided on the side of the guide opening, a symmetrical movable groove is provided at the bottom of the knife outlet groove, a circular cutter is provided in the knife outlet groove, and the bottom of the circular cutter is fixedly connected to the bottom of the accommodating cavity.

[0014] Preferably, the circular cutter includes a cutting edge and a support sheet symmetrically fixedly connected to the bottom of the cutting edge, and the support sheet passes through the movable slot and is fixedly connected to the bottom of the accommodating cavity.

[0015] Preferably, a wire inlet is provided in the middle of the front cover of the material removal mechanism, the diameter of the wire inlet is smaller than the diameter of the inner column of the material removal mechanism, and a wire outlet is provided in the middle of the rear cover of the material removal mechanism.

[0016] Preferably, a nitrogen channel is provided on one side of the drawing box, a nitrogen valve is fixedly connected to the other end of the nitrogen channel, and the nitrogen valve is connected to an external gas source; an exhaust channel is provided on one side of the drawing box, an exhaust valve is fixedly connected to the other end of the exhaust channel, and the exhaust valve is connected to an external exhaust pipe.

[0017] Preferably, a cooling and filtering mechanism is provided on one side of the drawing liquid pool, and the cooling and filtering mechanism includes a cooler, a cooler inlet pipe and a cooler return pipe located between the drawing liquid pool and the cooler, and a filter is also provided in the middle of the cooler inlet pipe.

[0018] Preferably, a cleaning guide roller is provided on the upper part of the drying and cleaning box, a cleaning active roller is provided on the lower part of the drying and cleaning box, a cleaning pool is fixedly provided at the bottom of the drying and cleaning box, the cleaning active roller is located in the cleaning pool, and a cleaning block is also provided between the cleaning active rollers. A fan is provided on one side of the drying and cleaning box, and the air outlet of the fan is fixedly connected to a connecting air duct, and the connecting air duct passes through the side wall of the drying and cleaning box and is fixedly connected to a spiral air duct, and the spiral air duct is spirally evenly distributed on the inner wall near the center of the spiral.

[0019] Preferably, a cooling and filtering mechanism is provided on one side of the cleaning tank.

[0020] Preferably, there are multiple upper active rollers and lower active rollers and the number of the two corresponds to each other, the tangent line between the two is a vertical line, and the distance between the upper active rollers corresponds to the distance between the lower active rollers.

[0021] (3) Beneficial effects

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention provides a cable conductor wire drawing device, which is drawn out from a conductor outlet frame into a wire drawing box through a copper wire coil, the copper wire first passes around an upper active roller and is pulled out vertically downward, then passes around a lower active roller and is pulled out horizontally, then passes around another adjacent lower active roller and is pulled out vertically upward, passes through a wire drawing die for the first wire drawing, and after wire drawing, the copper wire enters an annealing box for annealing treatment, passes through the annealing box and passes around another upper active roller and is pulled out horizontally, then passes around another adjacent upper active roller and is pulled out vertically downward, passes through a wire drawing die for the second wire drawing, and after wire drawing, the copper wire enters an annealing box for annealing treatment, passes through the annealing box and passes around another lower active roller and is pulled out horizontally. The wire drawing and annealing are repeated in this way, and the hardening, brittleness and stress generated by each wire drawing can be eliminated, and the physical properties of the copper wire before drawing can be restored, so that the copper wire is not easily broken during the wire drawing process.

[0024] 2. The present invention provides a cable conductor wire drawing device, which, when a copper wire with burrs, burrs or attachments passes through a removing mechanism, the copper wire cannot pass through the wire-passing hole of an inner column of the removing mechanism. At this time, the copper wire will drive the inner column of the removing mechanism to slide into the accommodating cavity, and the knife groove on the inner column of the removing mechanism will also slide into the accommodating cavity. When the circular cutter slides to expose the knife groove, the circular cutter will cut off the burrs, burrs or attachments on the copper wire, so that the copper wire can pass through the wire-passing hole of the inner column of the removing mechanism smoothly. After the inner column of the removing mechanism loses the force of the copper wire, it returns to the outside of the accommodating cavity under the action of the spring force of the spring, completing the removal of burrs, burrs or attachments on the copper wire. In this way, the copper wire will not be broken, thereby improving production efficiency and product quality.

[0025] 3. The present invention provides a cable conductor wire drawing device, which sets the lower active roller in the drawing liquid pool. Then, each time the copper wire passes through the lower active roller, it will enter the drawing liquid pool. After cooling and adding drawing liquid once, a spray box is set between the two upper active rollers to spray the drawing liquid on the copper wire between the two upper active rollers to cool the copper wire and add drawing liquid. With the above two structures, repeated cooling can further restore the physical properties of the copper wire before drawing, and repeated addition of drawing liquid can better prevent the copper wire from oxidation and discoloration, and can also play a lubricating role, thereby improving the drawing accuracy and surface smoothness, reducing the loss of the drawing die, and increasing its service life.

[0026] 4. The present invention provides a cable conductor wire drawing device, which sets the lower active roller in the drawing liquid pool. Then, each time the copper wire passes through the lower active roller, it will enter the drawing liquid pool. After cooling and adding drawing liquid once, the copper wire is cooled and lubricated, so that the copper wire drawing from bottom to top is cold-drawn; by setting a spray box between the two upper active rollers, the drawing liquid is sprayed on the copper wire between the two upper active rollers to cool and lubricate the copper wire, so that the copper wire drawing from top to bottom is cold-drawn. The above two structures can improve the drawing accuracy and surface smoothness, ensure the diameter size accuracy of the copper wire, improve the quality of the copper wire drawing, and improve the quality of the product.

[0027] 5. The present invention provides a cable conductor wire drawing device, which, during the process of air-drying the copper wire, moves upward and passes through the spiral air duct, and the air outlet on the inner wall of the spiral air duct blows air to the copper wire passing through the middle of the spiral air duct. At this time, since the air outlet is 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 by the spiral, and a large amount of liquid on the copper wire at the bottom of the spiral air duct will be blown away and blown off. As the copper wire moves upward, the liquid on the copper wire is blown dry one by one, and the liquid on the copper wire can be basically blown off when the copper wire reaches the middle position of the spiral air duct. Then, the blowing from the middle to the top of the spiral air duct can dry the residual moisture on the copper wire, thereby playing a drying role. The above structure can realize the process of first blowing away the liquid on the surface of the copper wire and then blowing it off to dry, so that the drying effect of the copper wire is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the external structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0030] Figure 3 For the present invention Figure 2 A partial enlarged view of point A in the middle.

[0031] Figure 4 For the present invention Figure 2 A partial enlarged view of point B in the middle.

[0032] Figure 5 It is a structural schematic diagram of the material removal mechanism of the present invention.

[0033] Figure 6 It is a structural schematic diagram of the material removal mechanism main body of the present invention.

[0034] Figure 7 It is a structural schematic diagram of the front cover of the material removal mechanism of the present invention.

[0035] Figure 8 It is a structural schematic diagram of the rear cover of the material removal mechanism of the present invention.

[0036] Figure 9 It is a three-dimensional diagram of the main body of the material removal mechanism of the present invention.

[0037] Figure 10 It is a stereoscopic view of the material removal mechanism main body from another perspective of the present invention.

[0038] Figure 11 It is a structural schematic diagram of the front view of the inner column without material removal of the present invention.

[0039] Figure 12 It is a structural schematic diagram of the left view of the inner column without material removal of the present invention.

[0040] Figure 13 It is a three-dimensional view of the circular cutter of the present invention.

[0041] Figure 14 For the present invention Figure 2 A partial enlarged view of point C in the middle.

[0042] In the figure: 1-drawing box, 2-conductor outlet frame, 3-drying and cleaning box, 4-receiving barrel, 5-inlet guide roller, 6-upper active roller, 7-lower active roller, 8-annealing box, 9-drawing liquid pool, 10-nitrogen channel, 11-nitrogen valve, 12-exhaust channel, 13-exhaust valve, 14-cleaning guide roller, 15-cleaning active roller, 16-cleaning pool, 17-cleaning block, 18-fan, 19-connecting air duct, 20-spiral air duct, 21-removal mechanism, 22-cooling and filtering mechanism, 23-cooler, 24-cooler inlet pipe, 25-cooler return pipe, 26-filter, 27-air outlet, 28- Removal mechanism body, 29-removal mechanism front cover, 30-removal mechanism rear cover, 31-accommodating cavity, 32-removal inner column, 33-connecting rod, 34-moving block, 35-spring, 36-moving circular cavity, 37-circular cutter, 38-knife outlet groove, 39-guide port, 40-wire outlet hole, 41-wire inlet, 42-wire outlet, 43-movable groove, 44-cutting mouth, 45-support plate, 46-collection box, 47-drawing die, 48-spray box, 49-spray pipe, 50-spray liquid delivery pipe, 51, liquid pump, 52-liquid inlet pipe, 53-spray chamber, 54-spray head, 55-spray return pipe. DETAILED DESCRIPTION

[0043] The following is a combination of the embodiments of the present invention Figure 1-14 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] The present invention provides a technical solution: a cable conductor wire drawing device, comprising a wire drawing box 1, a conductor outlet frame 2 is provided on one side of the wire drawing box 1, the conductor outlet frame 2 is in the shape of a circular cage, the copper wire roll is drawn out from the conductor outlet frame 2 and enters the wire drawing box 1, the other side of the wire drawing box 1 is fixedly connected to a drying and cleaning box 3, the drying and cleaning box 3 is fixedly connected to the wire drawing box 1 side by side, a wire take-up barrel 4 is provided on the side of the drying and cleaning box 3 away from the wire drawing box 1, the wire take-up barrel 4 rewinds the copper wire after drawing, a wire feed guide roller 5 is provided on the upper part of the conductor outlet frame 2, the wire feed guide roller 5 guides the copper wire so that the copper wire enters the wire drawing box 1 straightly, an upper active roller 6 is provided on the upper part of the wire drawing box 1, a lower active roller 7 is provided on the lower part of the wire drawing box 1, and the upper active roller 6 and the lower active roller 7 are both multiple And the number of the two corresponds to each other, the tangent between the two is a vertical line, the distance between the upper active rollers 6 corresponds to the distance between the lower active rollers 7, an annealing box 8 is provided between the upper active rollers 6 and the lower active rollers 7, a drawing liquid pool 9 is fixedly provided at the bottom of the drawing box 1, the lower active roller 7 is located in the drawing liquid pool 9, a cooling and filtering mechanism 22 is provided on one side of the drawing liquid pool 9, the cooling and filtering mechanism 22 includes a cooler 23, a cooler inlet pipe 24 and a cooler return pipe 25 located between the drawing liquid pool 9 and the cooler 23, a filter 26 is also provided in the middle of the cooler inlet pipe 24, a drawing die 47 is also provided between the upper active roller 6 and the annealing box 8, a removal mechanism 21 is also provided between the drawing box 1 and the wire feed guide roller 5, a collecting box 46 is provided at the bottom of the removal mechanism 21, and the removal mechanism 21 A spray box 48 is provided between the upper active rollers 6, and a spray pipe 49 is fixedly connected to the top of the spray box 48. A spray chamber 53 is provided on the top of the spray box 48, and a spray head 54 is arranged at the bottom of the spray chamber 53. The other end of the spray pipe 49 is fixedly connected to a spray liquid delivery pipe 50, and the other end of the spray liquid delivery pipe 50 is fixedly connected to a liquid pump 51, and the other end of the liquid pump 51 is fixedly connected to a liquid inlet pipe 52. A spray return pipe 55 is fixedly connected to the bottom of the spray box 48. The spray box 48 is provided to spray the drawing liquid on the copper wire between the two upper active rollers 6 to cool and lubricate the copper wire, so that the copper wire can be cold-drawn from top to bottom, thereby ensuring the diameter and size accuracy of the copper wire. When in use, The copper wire coil is pulled out from the conductor outlet frame 2 and enters the wire drawing box 1 after passing through the material removal mechanism 21. The upper part of the conductor outlet frame 2 is provided with an inlet guide roller 5. The inlet guide 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 passes around the upper active roller 6 and is pulled out vertically downward, then passes around the lower active roller 7 and is pulled out horizontally, then passes around the adjacent other lower active roller 7 and is pulled out vertically upward, passes through the wire drawing die 47 for the first wire drawing, and after wire drawing, the copper wire enters the annealing box 8 for annealing treatment. After passing through the annealing box 8, the copper wire passes around the other upper active roller 6 and is pulled out horizontally, then passes around the adjacent other upper active roller 6 and is pulled out vertically downward, passes through the wire drawing die 47 for the second wire drawing, and 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 passes around another lower active roller 7 and is pulled out horizontally. The wire drawing and annealing are repeated in this way, which can eliminate the hardening, brittleness and stress caused by 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. Moreover, we set the lower active roller 7 in the wire drawing liquid pool 9, so that each time the copper wire passes through the lower active roller 7, it will enter the wire drawing liquid pool 9, after cooling and adding wire drawing liquid once, a spray box 48 is set between the two upper active rollers 6, and the wire drawing liquid is sprayed on the copper wire between the two upper active rollers 6. Therefore, repeated cooling can further restore the physical properties of the copper wire before wire drawing, and repeated addition of wire drawing liquid can better prevent the copper wire from oxidation and discoloration, and can also play a lubricating role, and can make the copper wire cold-drawn from top to bottom. The above two structures can improve the wire drawing accuracy and surface smoothness, ensure the diameter size accuracy of the copper wire, improve the quality of the copper wire drawing, improve the quality of the product, reduce the loss of the wire drawing die 47, and increase its service life.

[0045] The material removal mechanism 21 includes a material removal mechanism body 28, a material removal mechanism front cover 29 fixedly connected to one side of the material removal mechanism body 28, and a material removal mechanism rear cover 30 fixedly connected to the other side of the material removal mechanism body 28. The material removal mechanism body 28 is a cylinder. A cylindrical accommodating cavity 31 is provided on the side of the material removal mechanism body 28 close to the material removal mechanism front cover 29. A long circular movable circular cavity 36 is provided on the side of the material removal mechanism body 28 close to the material removal mechanism rear cover 30. A wire outlet hole 40 is provided in the middle of the material removal mechanism body 28 for passing copper wire. A material removal inner column 32 is provided in the accommodating cavity 31. The material removal inner column 32 is also cylindrical. The material removal inner column 32 can slide in the accommodating cavity 31. One side of the material removal inner column 32 is fixedly connected with a connecting rod. The connecting rod 33 and the other end of the connecting rod 33 are fixedly connected to a moving block 34, which is slidably connected to the moving circular cavity 36. A spring 35 is also provided between the moving block 34 and the back cover 30, so that the inner column 32 of the material removal can slide and telescope in the accommodating cavity 31. A trumpet-shaped guide port 39 is provided in the middle of the inner column 32 of the material removal. The trumpet-shaped guide port 39 can roll the burrs or attachments on the copper wire cut off along the inclined surface of the trumpet mouth into the collection box 46. A wire hole is provided in the middle of the inner column 32 of the material removal, and the wire hole is connected to the small mouth of the guide port 39. A knife groove 38 is provided on the side of the guide port 39. The knife groove 38 is a circular groove. A symmetrical movable groove 43 is provided at the bottom of the knife groove 38. There is a circular cutter 37, which includes a cutting edge 44 and a support piece 45 symmetrically fixedly connected to the bottom of the cutting edge 44. The cutting edge 44 is annular, and the support piece 45 is fixedly connected to the bottom of the accommodating cavity 31 after passing through the movable groove 43. The support piece 45 and the movable groove 43 are fan-shaped arc pieces, similar to the shape of magnetic steel. The front cover 29 of the material removal mechanism is in the shape of a disc, and 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 removal inner column 32, so that the front cover 29 of the material removal mechanism can cover the material removal inner column 32 and fix the material removal inner column 32. The diameter of the wire inlet 41 is larger than the guide port 39, which is convenient for the copper wire to pass through. The middle of the rear cover 30 of the material removal mechanism is provided with a wire outlet 42 for the copper wire to pass through. When burrs, burrs or attachments appear on the copper wire of the material removal mechanism 21, the copper wire cannot pass through the wire hole of the material removal inner column 32. At this time, the copper wire will drive the material removal inner column 32 to slide into the accommodating cavity 31, and the knife groove 38 on the material removal inner column 32 will also slide into the accommodating cavity 31. When the circular cutter 37 slides to expose the knife groove 38, the circular cutter 37 will cut off the burrs, burrs or attachments on the copper wire, so that the copper wire can pass through the wire hole of the material removal inner column 32 smoothly. After the material removal inner column 32 loses the force of the copper wire, it returns to the outside of the accommodating cavity 31 under the action of the spring force of the spring 35, completing the material removal work of the burrs, burrs or attachments on the copper wire. In this way, the copper wire will not be broken, thereby improving production efficiency and product quality.

[0046] A nitrogen channel 10 is provided on one side of the drawing box 1, and a nitrogen valve 11 is fixedly connected to the other end of the nitrogen channel 10, and the nitrogen valve 11 is connected to an external air source. An exhaust channel 12 is provided on one side of the drawing box 1, and an exhaust valve 13 is fixedly connected to the other end of the exhaust channel 12, and the exhaust valve 13 is connected to an external exhaust pipe. The nitrogen in the drawing box 1 can prevent the oxidation of the copper wire after heating, and it is not easy to form an oxide layer on the surface of the copper wire. The oxide layer will produce bulges in the subsequent coating of the insulating layer, affecting product quality and production efficiency.

[0047] A cleaning guide roller 14 is provided on the upper part of the drying and cleaning box 3, a cleaning active roller 15 is provided at the lower part of the drying and cleaning box 3, a cleaning pool 16 is fixedly provided at the bottom of the drying and cleaning box 3, the cleaning active roller 15 is located in the cleaning pool 16, a cooling filter mechanism 22 is provided on one side of the cleaning pool 16, a cleaning block 17 is also provided between the cleaning active rollers 15, the cleaning block 17 is a sponge block that can wipe the surface of the copper wire to further clean the copper wire, a fan 18 is provided on one side of the drying and cleaning box 3, an air outlet of the fan 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, and the spiral air duct 20 has a spiral uniform distribution on the inner wall near the center of the spiral There are several air outlets 27. When in use, the copper wire that has been repeatedly drawn and annealed is pulled horizontally through the side wall of the drawing box 1 and into the drying and cleaning box 3. The copper wire passes around the cleaning guide roller 14 and then vertically downward into the cleaning tank 16. Then, it passes around the cleaning active roller 15 and is pulled horizontally. The copper wire passes through the middle of the cleaning block 17 and then passes around another adjacent cleaning active roller 15 and is pulled vertically upward. The copper wire passes through the spiral air duct 20, and the air outlet on the inner wall of the spiral air duct 20 blows the liquid on the copper wire dry. The dried copper wire passes around another cleaning guide roller 14 and is pulled out into the take-up barrel 4. The take-up barrel 4 rewinds the copper wire after drawing. The copper wire is cleaned and blown dry in the drying and cleaning box 3.

[0048] Working principle: The copper wire coil is pulled out from the conductor outlet frame 2 and enters the wire drawing box 1 after passing through the material removal mechanism 21. The upper part of the conductor outlet frame 2 is provided with an inlet guide roller 5. The inlet guide 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 passes around the upper active roller 6 and is pulled out vertically downward, then passes around the lower active roller 7 and is pulled out horizontally, then passes around the adjacent other lower active roller 7 and is pulled out vertically upward, passes through the wire drawing die 47 for the first wire drawing, and after wire drawing, the copper wire enters the annealing box 8 for annealing treatment. After passing through the annealing box 8, the copper wire passes around the other upper active roller 6 and is pulled out horizontally, then passes around the adjacent other upper active roller 6 and is pulled out vertically downward, passes through the wire drawing die 47 for the second wire drawing, and after wire drawing, the copper wire enters the annealing box 8 is annealed, the copper wire passes through the annealing box 8 and then passes around another lower active roller 7 and is pulled out horizontally. The wire drawing and annealing are repeated in this way. The copper wire that has been repeatedly drawn and annealed passes through the side wall of the wire drawing box 1 and is pulled horizontally into the drying and cleaning box 3. The copper wire passes around the cleaning guide roller 14 and then vertically downwards into the cleaning tank 16. Then, it passes around the cleaning active roller 15 and is pulled out horizontally. The copper wire passes through the middle of the cleaning block 17 and then passes around another adjacent cleaning active roller 15 and is pulled vertically upwards. The copper wire passes through the spiral air duct 20, and the air outlet on the inner wall of the spiral air duct 20 blows the liquid on the copper wire dry. The dried copper wire passes around another cleaning guide roller 14 and is pulled out into 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 rewinds the copper wire after wire drawing.

[0049] Among them, the lower active roller 7 is set in the drawing liquid pool 9, so each time the copper wire passes through the lower active roller 7, it will enter the drawing liquid pool 9, and after cooling and adding drawing liquid once, a spray box 48 is set between the two upper active rollers 6 to spray the drawing liquid on the copper wire between the two upper active rollers 6. Therefore, repeated cooling can further restore the physical properties of the copper wire before drawing, and repeated addition of drawing liquid can better prevent the copper wire from oxidation and discoloration, and can also play a lubricating role, and can make the copper wire cold-drawn from top to bottom. The above two structures can improve the drawing accuracy and surface smoothness, ensure the diameter size accuracy of the copper wire, improve the quality of the copper wire drawing, improve the quality of the product, reduce the loss of the drawing die 47, and increase its service life.

[0050] During the wire drawing annealing process, nitrogen is introduced through the nitrogen channel 10 to prevent oxidation of the copper wire after heating, and it is not easy to form an oxide layer on the surface of the copper wire. The oxide layer will produce bulges during the subsequent coating of the insulating layer, affecting product quality and production efficiency.

[0051] Among them, a cooling and filtering mechanism 22 is provided on one side of the drawing liquid pool 9. The drawing liquid enters the cooler 23 from the cooler inlet pipe 24 for cooling. The cooled drawing liquid flows out from the cooler return pipe 25 at the other end of the cooler 23 and returns to the drawing liquid pool 9. A filter 26 is provided in the middle of the cooler inlet pipe 24 to filter the drawing liquid and keep it clean.

[0052] Among them, adding a sponge block 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. In the process of air drying 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 wall of the spiral air duct 20 blows air to the copper wire passing through the middle of the spiral air duct 20. At this time, since the air outlet 27 is spirally distributed on the spiral air duct 20 and the copper wire moves vertically upward, the liquid on the copper wire will be blown downward by the spiral, and a large amount of liquid on the copper wire at the bottom of the spiral air duct 20 will be blown away and blown off. As the copper wire moves upward, the liquid on the copper wire is blown dry one by one, and the liquid on the copper wire can be basically blown off when the copper wire reaches the middle position of the spiral air duct 20. Then, the blowing from the middle to the top of the spiral air duct 20 can dry the residual moisture on the copper wire, play a drying role, and make the copper wire drying effect better.

Claims

1. A cable conductor drawing device, comprising a drawing box (1), wherein a conductor outlet frame (2) is provided on one side of the drawing box (1), a drying and cleaning box (3) is fixedly connected to the other side of the drawing box (1), a wire take-up barrel (4) is provided on the side of the drying and cleaning box (3) away from the drawing box (1), and a wire feed guide roller (5) is provided on the upper part of the conductor outlet frame (2), characterized in that: An upper active roller (6) is provided at the upper part of the drawing box (1), a lower active roller (7) is provided at the lower part of the drawing box (1), an annealing box (8) is provided between the upper active roller (6) and the lower active roller (7), a drawing liquid pool (9) is fixedly provided at the bottom of the drawing box (1), the lower active roller (7) is located in the drawing liquid pool (9), a drawing die (47) is further provided between the upper active roller (6) and the annealing box (8), and the drawing box (1) and the wire guide roller (5) are connected. A material removal mechanism (21) is also provided between the upper active rollers (6), a spray box (48) is provided between the upper active rollers (6), a spray pipe (49) is fixedly connected to the top of the spray box (48), the spray pipe (49) is fixedly connected to a spray liquid delivery pipe (50), one end of the spray liquid delivery pipe (50) is fixedly connected to a liquid pump (51), the other end of the liquid pump (51) is fixedly connected to a liquid inlet pipe (52), and the bottom of the spray box (48) is fixedly connected to a spray return pipe (55); The material removal mechanism (21) comprises a material removal mechanism body (28), a material removal mechanism front cover (29) fixedly connected to one side of the material removal mechanism body (28), and a material removal mechanism rear cover (30) fixedly connected to the other side of the material removal mechanism body (28). A receiving cavity (31) is provided on the side of the material removal mechanism body (28) close to the material removal mechanism front cover (29), a movable circular cavity (36) is provided on the side of the material removal mechanism body (28) close to the material removal mechanism rear cover (30), a wire outlet hole (40) is provided in the middle of the material removal mechanism body (28), a material removal inner column (32) is provided in the receiving cavity (31), and the material removal inner column (32) is provided in the receiving cavity (31). A connecting rod (33) is fixedly connected to one side of the column (32), and 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 provided between the moving block (34) and the rear cover (30). A guide opening (39) is provided in the middle of the material removal inner column (32), and a knife groove (38) is provided on the side of the guide opening (39). A symmetrical movable groove (43) is provided at the bottom of the knife groove (38). A circular cutter (37) is provided in the knife groove (38), and the bottom of the circular cutter (37) is fixedly connected to the bottom of the accommodating cavity (31); The circular cutter (37) comprises a cutting edge (44) and a support sheet (45) symmetrically fixedly connected to the bottom of the cutting edge (44); the support sheet (45) passes through the movable groove (43) and is fixedly connected to the bottom of the accommodating cavity (31).

2. The cable conductor drawing device according to claim 1, characterized in that: A spray chamber (53) is provided at the top of the spray box (48), and a spray head (54) is arranged at the bottom of the spray chamber (53).

3. The cable conductor drawing device according to claim 1, characterized in that: A wire inlet (41) is provided in the middle of the material removal mechanism front cover (29), wherein the diameter of the wire inlet (41) is smaller than the diameter of the material removal inner column (32), and a wire outlet (42) is provided in the middle of the material removal mechanism rear cover (30).

4. The cable conductor drawing device according to any one of claims 1 to 3, characterized in that: A nitrogen channel (10) is provided on one side of the drawing box (1), and a nitrogen valve (11) is fixedly connected to the other end of the nitrogen channel (10), and the nitrogen valve (11) is connected to an external air source. An exhaust channel (12) is provided on one side of the drawing box (1), and an exhaust valve (13) is fixedly connected to the other end of the exhaust channel (12), and the exhaust valve (13) is connected to an external exhaust pipe.

5. The cable conductor drawing device according to claim 1, characterized in that: A cooling and filtering mechanism (22) is provided on one side of the drawing liquid pool (9), and the cooling and filtering mechanism (22) includes a cooler (23), a cooler inlet pipe (24) and a cooler return pipe (25) located between the drawing liquid pool (9) and the cooler (23), and a filter (26) is also provided in the middle of the cooler inlet pipe (24).

6. The cable conductor drawing device according to claim 1, characterized in that: A cleaning guide roller (14) is provided on the upper part of the drying and cleaning box (3), a cleaning active roller (15) is provided on the lower part of the drying and cleaning box (3), a cleaning pool (16) is fixedly provided on the bottom of the drying and cleaning box (3), the cleaning active roller (15) is located in the cleaning pool (16), and a cleaning block (17) is further provided between the cleaning active rollers (15). A fan (18) is provided on one side of the drying and cleaning box (3), an air outlet of the fan (18) is fixedly connected to a connecting air duct (19), and 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), and a plurality of air outlets (27) are evenly distributed on the inner side wall of the spiral duct (20) near the spiral center.

7. The cable conductor drawing device according to claim 6, characterized in that: A cooling and filtering mechanism (22) is provided on one side of the cleaning tank (16).

8. The cable conductor drawing device according to claim 1, characterized in that: The upper active rollers (6) and the lower active rollers (7) are both plural and the number of the two corresponds to each other. The tangent line between the two is a vertical line. The distance between the upper active rollers (6) corresponds to the distance between the lower active rollers (7).

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