Low-voltage power cable copper material processing and drawing device

Abstract

The application discloses a low-voltage power cable copper material processing and drawing device, and relates to the technical field of copper material drawing processing. The device is provided with a first wire disc and a second wire disc rotating synchronously on a rack, and both wire discs are provided with wire guide grooves gradually increasing in diameter along the axial direction; copper wires reciprocally wind between the two wire discs and pass through drawing dies of different hole diameters in a multi-die assembly in sequence, so that multi-pass gradual diameter reduction is continuously completed. A driving mechanism is used for synchronously transmitting power, and a tensioning mechanism is used for adjusting copper wire conveying tension; the multi-die assembly is further provided with a chip removal module, a limiting module and a circulating cooling structure; and the waste chips generated by drawing are removed by airflow and then fall into the collection box in the chip collection table. The application can reduce multi-machine series connection and repeated threading operation, improve the matching of wire speed and tension of each drawing pass, and improve the copper wire surface quality, drawing stability and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of copper drawing technology, and more specifically, to a copper drawing device for low-voltage power cables. Background Technology

[0002] Low-voltage power cables typically use copper as the conductive material. Copper conductors are characterized by stable conductivity, high mechanical strength, and good connection reliability. In the production process of low-voltage power cables, copper rods or wires of relatively large diameter need to be drawn multiple times to gradually reduce the diameter of the copper wire until it meets the specifications required for stranding, bundling, or cabling. Because the cross-sectional compression rate of a single drawing is limited by the plasticity of copper, the load-bearing capacity of the die, and the risk of wire breakage, in actual production, the copper wire usually needs to be passed sequentially through multiple drawing dies with gradually decreasing apertures.

[0003] Existing multi-pass wire drawing equipment typically consists of multiple independent drums, traction wheels, or drawing units, each with its own drive source, arranged sequentially along a long production line. This type of equipment occupies a large area, has a long copper wire threading path, and requires complex speed synchronization control between the drive units. When the linear speed or tension of adjacent drawing passes is mismatched, it can easily cause copper wire slack, slippage, localized overstretching, or even wire breakage, affecting product diameter consistency and surface quality.

[0004] Therefore, there is a need to provide a low-voltage power cable manufacturing device with a compact structure that can complete multiple stages of progressive diameter reduction within a single set of equipment, and can also take into account the linear speed matching, tension adjustment, and mold positioning of each stage to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the problems of existing multi-pass copper wire drawing equipment having a large footprint, complex transmission synchronization structure, and difficulty in matching tension and linear speed in each pass, which affects continuous production.

[0006] To address the aforementioned problems, this invention provides a copper wire drawing device for low-voltage power cables, comprising a frame in which a symmetrically distributed drive shaft and driven shaft are rotatably arranged. A first wire reel is fixedly mounted on the outer side of the driven shaft, and a second wire reel is fixedly mounted on the outer side of the drive shaft. Both the first and second wire reels have equally spaced wire loop grooves on their outer sides, with the inner diameter of the grooves increasing sequentially away from the frame. The device also includes a drive mechanism mounted on the frame for guiding the copper wire and driving the drawing process. The first and second wire reels rotate synchronously; a multi-die assembly is disposed on the outside of the frame, located between the first and second wire reels, and includes multiple drawing dies for sequentially passing the copper wire between the first and second wire reels through drawing dies of different apertures on the multi-die assembly to achieve multi-pass progressive diameter reduction operation; a tensioning mechanism is disposed on one side of the frame and located below the multi-die assembly for controlling the tension during copper wire feeding.

[0007] The present invention provides a copper material processing and drawing device for low-voltage power cables, which, compared with the prior art, has the following beneficial effects, but is not limited to: To address the problems of existing multi-pass copper wire drawing equipment, such as large footprint, complex transmission synchronization structure, and difficulty in matching tension and linear speed in each pass, which affects continuous production, the frame of this device serves as the load-bearing foundation. It can be constructed from welded steel profiles after stress relief treatment, or from a combination of industrial aluminum profiles. The drive shaft and driven shaft are arranged parallel to each other in the frame and are rotatably connected to the frame via bearing seats. The first wire reel is fixed to the driven shaft, and the second wire reel is fixed to the drive shaft. The axes of the two reels are parallel to each other and form corresponding winding areas in the axial direction. Multiple sets of wire ring grooves are machined on the outer periphery of both the first and second wire reels. Along the direction away from the frame, the effective diameter of the bottom of each wire ring groove increases sequentially, and the wire ring grooves on the two reels at the same axial position have corresponding effective diameters. The surface of the wire ring grooves can be polished, hard chrome plated, or coated with a wear-resistant ceramic layer to reduce the risk of scratches on the copper wire surface. The multi-die assembly is located between the two wire reels, with multiple drawing dies arranged sequentially according to the drawing direction, and the die aperture decreasing in size at each stage. During threading, the copper wire to be processed is introduced into the first drawing die, then wound into the corresponding wire loop grooves of two wire reels. The copper wire then sequentially passes through subsequent drawing dies and corresponding wire loop grooves, forming a multiple reciprocating winding path. After the final diameter reduction, the copper wire is guided by the output reel to the subsequent take-up or stranding equipment. In use, the drive mechanism drives the two wire reels to rotate synchronously, and the copper wire moves continuously between the wire loop grooves and the drawing die. As the cross-sectional area of ​​the copper wire decreases with each pass, the required linear velocity for subsequent passes increases accordingly. The progressively increasing diameter wire loop grooves create progressively increasing circumferential linear velocities at the same angular velocity, thus adapting to changes in the volumetric flow rate of the copper wire. The tensioning mechanism provides support and tension adjustment for the copper wire in each pass. The multi-die assembly simultaneously completes die positioning, thereby enabling continuous multi-pass drawing within a compact space, reducing repetitive threading and multi-motor synchronous control, improving the consistency of copper wire diameter and production stability.

[0008] Furthermore, the drive mechanism includes a first rotating wheel, a second rotating wheel, a third rotating wheel, and a fourth rotating wheel. A drive motor and a reducer are fixedly mounted on the side wall of the frame. The drive end of the drive motor is connected to the input end of the reducer, and the output end of the reducer is fixedly connected to the end of the drive shaft. The second rotating wheel and the third rotating wheel are fixedly mounted on the outside of the drive shaft, and the fourth rotating wheel is fixedly mounted on the end of the driven shaft. An output disk is also rotatably arranged on one side of the frame, and the first rotating wheel is fixedly mounted on the end of the output disk. The first rotating wheel and the second rotating wheel, as well as the third rotating wheel and the fourth rotating wheel, are all connected by a transmission belt.

[0009] Furthermore, the multi-mode assembly includes a mold frame fixedly installed on one side of the frame, and the mold frame is located between the first wire reel and the second wire reel. The mold frame has placement slots that correspond to and are staggered with the wire ring grooves, so that the inlet and outlet of each wire drawing die correspond to the tangential direction of the corresponding wire ring groove. The wire drawing die is located in the placement slot. The mold frame has wire routing slots on both sides that correspond to the wire drawing die.

[0010] Furthermore, the multi-mode assembly also includes a chip removal module for cleaning up waste chips adhering to the surface of the copper wire. The chip removal module includes an air blowing channel opened on one side of the mold frame, and an air blowing hole connected to the air blowing channel is opened on the bottom inner wall of the wiring groove.

[0011] Furthermore, the mold frame is provided with equidistant flow guides above it, and the flow guides are located directly above the wiring groove. The inner side of the flow guides is set as a symmetrical arc surface to guide the airflow blown upward from the air blowing hole downward. The wiring groove is also provided with an inlet for copper wires to enter the wiring groove.

[0012] Furthermore, the multi-die assembly also includes a limiting module for defining the position of the wire drawing die. The limiting module includes a cover plate, the lower surface of which has a slot corresponding to the wire drawing die, the outer side of which has a mounting hole, and a limiting bolt is provided in the mounting hole. The upper surface of the die holder has a threaded groove, and the limiting bolt is threadedly engaged with the threaded groove.

[0013] Furthermore, the mold frame is provided with a liquid storage cavity, and a liquid inlet pipe communicating with the liquid storage cavity is provided on one side of the mold frame. The cover plate is provided with a cavity, and a liquid drain pipe communicating with the cavity is provided on one side of the cover plate. A slot is provided on the upper surface of the mold frame, and an insertion tube communicating with the cavity is provided at the bottom of the cover plate, and the insertion tube is inserted into the slot. A through groove communicating with the liquid storage cavity is provided on the bottom inner wall of the slot.

[0014] Furthermore, a washer is provided in the slot, and when the insertion tube is inserted into the slot, the bottom end of the insertion tube abuts against the upper surface of the washer. A limiting rod symmetrically arranged with the insertion tube is also fixedly installed on the lower surface of the cover plate, and a limiting groove that cooperates with the limiting rod is opened on the upper surface of the mold frame.

[0015] Furthermore, the tensioning mechanism includes a support plate disposed on one side of the frame. The surface of the support plate is provided with equally spaced fixing holes, and an electric telescopic rod is fixedly installed in the fixing holes. A mounting base is fixedly installed at the telescopic end of the electric telescopic rod. A pressure sensor is fixedly installed on the bottom inner wall of the mounting base. A mounting block is movably installed in the mounting base, and a tensioning wheel is rotatably disposed on the upper surface of the mounting block.

[0016] Furthermore, a chip collection platform is provided on one side of the frame, and the multi-mode component is located above the chip collection platform. A collection box is movably installed in the chip collection platform, and chip discharge holes corresponding to the collection box are opened on the surface of the chip collection platform. Attached Figure Description

[0017] Figure 1 This is a first-view structural schematic diagram of a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention; Figure 2 This is a second-view structural schematic diagram of a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the multi-mode component in a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention; Figure 4 This is an exploded structural diagram of a multi-mode component in a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention; Figure 5 This is a half-sectional view of the multi-mode component in a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention. Figure 6 This is a schematic diagram of the mold frame in a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the cover plate in a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the tensioning mechanism in a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention; Figure 9 This is a half-sectional view of the mounting base in a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention. Figure 10 This is a third-view structural schematic diagram of a low-voltage power cable copper material processing and drawing device according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Frame; 11. Driven shaft; 12. First wire reel; 13. Drive shaft; 14. Second wire reel; 15. Wire ring groove; 2. Drive mechanism; 21. Output disc; 22. First roller; 23. Second roller; 24. Third roller; 25. Fourth roller; 26. Drive motor; 27. Reducer; 3. Multi-mold assembly; 31. Mold holder; 32. Placement slot; 33. Wire drawing die; 34. Wire routing slot; 4. Chip removal module; 41. Air blowing channel; 42. Air blowing hole; 43. Flow guide; 44. Wire inlet; 5. Limiting module; 51, cover plate; 511, insertion tube; 512, slot; 513, through groove; 514, washer; 515, limiting rod; 516, limiting groove; 52, cavity; 53, drain pipe; 54, storage chamber; 55, inlet pipe; 56, limiting bolt; 57, threaded groove; 58, slot; 6, tensioning mechanism; 61, support plate; 62, electric telescopic rod; 63, mounting base; 64, tensioning wheel; 65, pressure sensor; 66, mounting block; 71, chip collection table; 72, chip discharge hole; 73, collection box. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments of this application are described clearly and completely below with reference to the accompanying drawings. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0020] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," "comprise," etc., in the specification, claims, and accompanying drawings of this application are open-ended terms, indicating that a method comprises one or more steps, or an apparatus comprises one or more elements, but do not exclude the inclusion of other steps or elements. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or primary / secondary relationship. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0024] See Figures 1-10 An embodiment of the present invention discloses a copper wire drawing device for low-voltage power cables, comprising a frame 1, wherein a drive shaft 13 and a driven shaft 11 are symmetrically distributed and rotatably arranged in the frame 1. A first wire reel 12 is fixedly mounted on the outer side of the driven shaft 11, and a second wire reel 14 is fixedly mounted on the outer side of the drive shaft 13. Both the first wire reel 12 and the second wire reel 14 have equally spaced wire annular grooves 15 on their outer sides. The inner diameter of the plurality of wire annular grooves 15 increases sequentially in the direction away from the frame 1. The device further comprises a drive mechanism 2, which is disposed on the frame 1 and is used to guide the copper wire and drive the first wire reel 13. The wire reel 12 and the second wire reel 14 rotate synchronously; a multi-mode assembly 3 is disposed on the outside of the frame 1, located between the first wire reel 12 and the second wire reel 14, and includes multiple drawing dies 33 for sequentially passing the copper wire between the first wire reel 12 and the second wire reel 14 through drawing dies 33 of different apertures on the multi-mode assembly 3, realizing multi-pass step-by-step diameter reduction operation; a tensioning mechanism 6 is disposed on one side of the frame 1, and located below the multi-mode assembly 3, for controlling the tension during copper wire feeding.

[0025] In this embodiment, addressing the problems of existing multi-pass copper wire drawing equipment such as large footprint, complex transmission synchronization structure, and difficulty in matching tension and linear speed in each pass, affecting continuous production, the frame 1 of this device constitutes the load-bearing foundation of the device. It can be made of welded steel profiles followed by stress-relief treatment, or it can be formed by combining industrial aluminum profiles. The drive shaft 13 and driven shaft 11 are arranged parallel to each other in the frame 1 and are rotatably connected to the frame 1 via bearing seats. The first wire reel 12 is fixed to the driven shaft 11, and the second wire reel 14 is fixed to the drive shaft 13. The axes of the two reels are parallel to each other and form corresponding winding areas in the axial direction. Multiple sets of wire ring grooves 15 are machined on the outer periphery of both the first wire reel 12 and the second wire reel 14. Along the direction away from the frame 1, the effective diameter of the bottom of each wire ring groove 15 increases sequentially, and the wire ring grooves 15 on the two reels at the same axial position have corresponding effective diameters. The surface of the wire ring grooves 15 can be polished, hard chrome plated, or have a wear-resistant ceramic layer applied to reduce the risk of scratches on the copper wire surface. The multi-die assembly 3 is located between two wire reels, with multiple drawing dies 33 arranged sequentially according to the drawing direction, and the diameter of the drawing dies 33 decreasing step by step. During wire threading, the copper wire to be processed is introduced into the first drawing die 33, and then wound into the corresponding wire loop grooves 15 of the two wire reels. Subsequently, the copper wire passes through the subsequent drawing dies 33 and the corresponding wire loop grooves 15 in sequence, forming a multiple reciprocating winding path. After the final diameter reduction is completed, the copper wire is guided by the output reel 21 to the subsequent take-up or stranding equipment. In use, the drive mechanism 2 drives the two wire reels to rotate synchronously, and the copper wire moves continuously between the wire loop grooves 15 and the drawing dies 33. As the cross-sectional area of ​​the copper wire decreases step by step, the required linear velocity for subsequent passes increases accordingly. The wire loop grooves 15 with progressively increasing diameters form progressively increasing circumferential linear velocities at the same angular velocity, thus adapting to the changes in the volumetric flow rate of the copper wire. The tensioning mechanism 6 provides support and tension adjustment for each pass of copper wire, while the multi-mold assembly 3 simultaneously completes mold positioning. This allows for continuous multi-pass wire drawing within a compact space, reducing repetitive threading and multi-motor synchronous control, thereby improving the consistency of copper wire diameter and production stability.

[0026] Optionally, see Figure 1 and Figure 2The drive mechanism 2 includes a first rotating wheel 22, a second rotating wheel 23, a third rotating wheel 24, and a fourth rotating wheel 25. A drive motor 26 and a reducer 27 are fixedly installed on the side wall of the frame 1. The drive end of the drive motor 26 is connected to the input end of the reducer 27, and the output end of the reducer 27 is fixedly connected to the end of the drive shaft 13. The second rotating wheel 23 and the third rotating wheel 24 are fixedly installed on the outside of the drive shaft 13, and the fourth rotating wheel 25 is fixedly installed on the end of the driven shaft 11. An output disk 21 is also rotatably arranged on one side of the frame 1, and the first rotating wheel 22 is fixedly installed on the end of the output disk 21. The first rotating wheel 22 and the second rotating wheel 23, as well as the third rotating wheel 24 and the fourth rotating wheel 25, are all connected by transmission belts.

[0027] In this embodiment, the drive motor 26 and the reducer 27 are fixed to the side wall of the frame 1. The drive motor 26 can be a variable frequency speed control motor or a servo motor, and the reducer 27 can be a helical gear reducer 27. The output shaft of the reducer 27 is coaxially connected to the drive shaft 13 to drive the drive shaft 13 and the second reel 14 to rotate. The second wheel 23 and the third wheel 24 are fixed to the drive shaft 13, and the fourth wheel 25 is fixed to the driven shaft 11. The third wheel 24 and the fourth wheel 25 are connected by a transmission belt. When the drive shaft 13 rotates, the power is transmitted to the driven shaft 11 through the third wheel 24, the transmission belt, and the fourth wheel 25, so that the first reel 12 and the second reel 14 operate synchronously according to a predetermined transmission ratio. The first wheel 22 is installed at the end of the output disc 21 and is connected to the second wheel 23 through another transmission belt, so that the output disc 21 and the drive shaft 13 maintain coordinated operation.

[0028] In this system, after the drive motor 26 outputs power, the speed is reduced and the torque is increased by the reducer 27. The drive shaft 13 directly drives the second coil 14, and simultaneously drives the first coil 12 through the third and fourth pulleys 24 and 25, and drives the output disc 21 through the second pulley 23 and the first pulley 22. Since all rotating components are driven by the same power source, speed deviations between independent drive units are reduced. The transmission belt also has a certain elastic buffering effect, which can reduce the impact caused by sudden changes in copper wire tension and improve transmission smoothness.

[0029] Optionally, see Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6The multi-mode assembly 3 includes a mold frame 31 fixedly installed on one side of the frame 1, and the mold frame 31 is located between the first wire reel 12 and the second wire reel 14. The mold frame 31 has placement grooves 32 that correspond to and are staggered with the wire ring grooves 15, so that the inlet and outlet of each wire drawing die 33 correspond to the tangential direction of the corresponding wire ring groove 15. The wire drawing die 33 is located in the placement grooves 32. The mold frame 31 has wire routing grooves 34 on both sides that correspond to the wire drawing die 33.

[0030] In this embodiment, the multi-mode assembly 3 is further described. A mold frame 31 is fixed to the outside of the frame 1 and positioned between the first wire reel 12 and the second wire reel 14. The mold frame 31 can be made of high-strength alloy steel or wear-resistant cast iron, and has multiple staggered placement slots 32 along the copper wire running direction. Each placement slot 32 corresponds to a different conductor ring groove 15 on the two wire reels, allowing the copper wire to smoothly enter the corresponding drawing die 33 after exiting from one conductor ring groove 15, and then wind around to the other wire reel after passing through the drawing die 33. The drawing die 33 can be made of hard alloy or polycrystalline diamond, and the sizing hole diameter of each drawing die 33 decreases sequentially according to the copper wire running direction. The wire routing grooves 34 on both sides of the mold frame 31 are connected to the inlet and outlet of the drawing die 33, and the edges of the wire routing grooves 34 are rounded to prevent the copper wire from contacting sharp edges during threading and running.

[0031] In use, the copper wire sequentially enters the drawing dies 33 in different placement slots 32, and its diameter gradually decreases under the action of the working cone and sizing band of the drawing die 33. The staggered placement slots 32 and the wire ring slots 15 on the two wire spools together define the reciprocating path of the copper wire, separating adjacent drawing passes and avoiding cross-friction of copper wires in different passes. The centralized die holder 31 can also shorten the drawing path and facilitate operators to uniformly inspect and replace the drawing dies 33.

[0032] Optionally, see Figure 3 , Figure 4 and Figure 6 The multi-mode assembly 3 also includes a chip removal module 4 for cleaning the waste chips adhering to the surface of the copper wire. The chip removal module 4 includes an air blowing channel 41 opened on one side of the mold frame 31, and an air blowing hole 42 connected to the air blowing channel 41 is opened on the bottom inner wall of the wiring groove 34.

[0033] In this embodiment, the air blowing channel 41 extends along the length of the mold frame 31 and can be connected to an external compressed air source or blower via a conventional air pipe. Each wire routing groove 34 has one or more air blowing holes 42 at its bottom, which are connected to the air blowing channel 41 and face the copper wire running area. During operation, external airflow enters the air blowing channel 41 and is then ejected upwards from each air blowing hole 42. Fine copper shavings, lubricant residue, and other particles generated after the copper wire passes through the drawing die 33 are removed from the surface of the copper wire and the bottom of the wire routing groove 34 by the airflow, preventing debris from entering the subsequent drawing die 33 along with the copper wire.

[0034] The blowing channel 41 distributes the concentrated airflow to multiple drawing passes, and the blowing holes 42 create a local high-speed airflow below the copper wire, causing the less adherent debris to be peeled off and moved to the outside or below the wiring groove 34. Since the debris removal process is carried out simultaneously with the wire drawing process, it is not necessary to stop the machine to clean the entrance of each drawing die 33, which can reduce the risk of die hole blockage and copper wire surface scratches caused by debris, and extend the effective service life of the drawing die 33.

[0035] Optionally, see Figure 3 , Figure 4 and Figure 6 The mold frame 31 is provided with equidistant flow guides 43 above it, and the flow guides 43 are located directly above the wiring groove 34. The inner side of the flow guides 43 is set as a symmetrical arc surface to guide the airflow blown upward from the air blowing hole 42 downward. The wiring groove 34 is also provided with an inlet 44 on one side for copper wires to enter the wiring groove 34.

[0036] In this embodiment, each flow guide shroud 43 corresponds to a wiring trough 34, and the inner side of the flow guide shroud 43 forms a symmetrical arc surface. A wire inlet 44 is provided on one side of the wiring trough 34. The edge of the wire inlet 44 is rounded or fitted with a wear-resistant guide bushing to prevent the copper wire from being scratched when it passes through. The airflow ejected upwards from the blower 42 reaches the flow guide shroud 43, then deflects downwards along the arc surface and flows to both sides of the copper wire, thus forming a recirculating airflow surrounding the copper wire. The flow guide shroud 43 can also block upward-flying metal debris, causing the debris to fall downwards into the debris collection area after losing kinetic energy.

[0037] The blower hole 42 and the guide shroud 43 work together to change the airflow direction, transforming the unidirectional upward airflow into a circulating scouring airflow around the copper wire's running area, thus improving the cleaning effect on the upper and lower surfaces of the copper wire. At the same time, the guide shroud 43 can limit the range of debris scattering, improve the environment around the equipment, and make it easier for debris to fall into the chip collection table 71 below in a predetermined direction.

[0038] Optionally, see Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The multi-mold assembly 3 further includes a limiting module 5 for limiting the position of the wire drawing die 33. The limiting module 5 includes a cover plate 51. The lower surface of the cover plate 51 is provided with a slot 58 corresponding to the wire drawing die 33. The outer side of the cover plate 51 is provided with a mounting hole, and a limiting bolt 56 is provided in the mounting hole. The upper surface of the die holder 31 is provided with a threaded groove 57, and the limiting bolt 56 is threadedly engaged with the threaded groove 57.

[0039] In this embodiment, the wire drawing die 33 is fixed by the limiting module 5. After the wire drawing die 33 is placed in the placement slot 32 on the die holder 31, the cover plate 51 is placed over the die holder 31. The slot 58 on the lower surface of the cover plate 51 is adapted to the outer contour of the wire drawing die 33. The slot 58 can be semi-circular, arc-shaped, or stepped to radially limit the upper part of the wire drawing die 33. The limiting bolt 56 passes through the mounting hole on the cover plate 51 and is screwed into the threaded groove 57 on the die holder 31, so that the cover plate 51 is pressed tightly onto the die holder 31. When the copper wire passes through the wire drawing die 33, it will generate an axial force along the direction of copper wire running and a certain radial vibration on the wire drawing die 33. The placement slot 32 supports the lower part of the wire drawing die 33, the cover plate 51 and the slot 58 restrict the upper and side parts of the wire drawing die 33, and the limiting bolt 56 provides a continuous clamping force, thereby preventing the wire drawing die 33 from jumping or jumping out of the placement slot 32. When it is necessary to change the mold specifications, simply loosen the limit bolt 56 and remove the cover plate 51 to take out the corresponding wire drawing die 33 from the placement slot 32 without disassembling the wire reel or mold frame 31. This structure can balance the reliability of mold fixing and the convenience of disassembly and replacement, and facilitates the rapid adjustment of the wire drawing die 33 combination according to different finished wire diameters.

[0040] Optionally, see Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The mold frame 31 is provided with a liquid storage chamber 54. A liquid inlet pipe 55 communicating with the liquid storage chamber 54 is provided on one side of the mold frame 31. A cavity 52 is provided in the cover plate 51, and a drain pipe 53 communicating with the cavity 52 is provided on one side of the cover plate 51. A slot 512 is provided on the upper surface of the mold frame 31. An insertion tube 511 communicating with the cavity 52 is provided at the bottom of the cover plate 51, and the insertion tube 511 is inserted into the slot 512. A through groove 513 communicating with the liquid storage chamber 54 is provided on the bottom inner wall of the slot 512.

[0041] In this embodiment, a cooling medium circulation path is formed inside the mold frame 31 and the cover plate 51. The liquid storage chamber 54 in the mold frame 31 extends along the area where multiple drawing dies 33 are located, and the liquid inlet pipe 55 is connected to an external coolant circulation device. A cavity 52 is provided inside the cover plate 51, and the drain pipe 53 communicates with the cavity 52. ​​After the cover plate 51 is installed on the mold frame 31, the insert pipe 511 at the bottom of the cover plate 51 is inserted into the slot 512 on the upper surface of the mold frame 31, and the through groove 513 at the bottom of the slot 512 communicates with the liquid storage chamber 54, thereby forming a continuous flow path from the liquid inlet pipe 55, the liquid storage chamber 54, the through groove 513, the slot 512, the insert pipe 511, the cavity 52 to the drain pipe 53. The cooling medium can be a water-based drawing coolant or other liquids with good heat exchange performance and that do not corrode the materials of the device. After entering the liquid storage chamber 54, the cooling medium absorbs the heat transferred from the mold frame 31 and the wire drawing die 33, then enters the cavity 52 of the cover plate 51 and is discharged from the drain pipe 53. After being cooled by an external heat exchange device, it is recycled.

[0042] The frictional heat generated during the wire drawing process is transferred to the die holder 31 and the cover plate 51 via the wire drawing die 33. The circulating cooling medium continuously removes the heat, keeping the multiple wire drawing dies 33 at a relatively stable working temperature, reducing the size fluctuation of the die holes due to thermal expansion, and reducing the possibility of high-temperature deterioration of the lubricating medium and oxidation of the copper wire surface.

[0043] Optionally, see Figure 5 , Figure 6 and Figure 7 A washer 514 is provided in the slot 512, and when the insertion tube 511 is inserted into the slot 512, the bottom end of the insertion tube 511 abuts against the upper surface of the washer 514. A limiting rod 515 symmetrically arranged with the insertion tube 511 is also fixedly installed on the lower surface of the cover plate 51. A limiting groove 516 that cooperates with the limiting rod 515 is opened on the upper surface of the mold frame 31.

[0044] In this embodiment, the connection positioning and sealing structure between the cover plate 51 and the mold frame 31 are further defined. An elastic washer 514 is provided inside the slot 512. The washer 514 can be made of oil-resistant rubber, fluororubber, or other sealing materials compatible with the cooling medium. After the cover plate 51 is installed, the bottom end of the insertion tube 511 presses against the washer 514, causing the washer 514 to undergo elastic deformation, thereby sealing the connection area between the outer periphery of the insertion tube 511 and the slot 512. A limiting rod 515 on the lower surface of the cover plate 51 is symmetrically arranged with the insertion tube 511, and a limiting groove 516 corresponding to the limiting rod 515 is provided on the upper surface of the mold frame 31. During assembly, the limiting rod 515 is first inserted into the limiting groove 516, and then the insertion tube 511 is inserted into the slot 512, thereby defining the installation direction and lateral position of the cover plate 51. The limiting rod 515 can also share the lateral force on the cover plate 51, preventing the insertion tube 511 from bearing shear loads alone. This multi-stage positioning method can reduce the jamming of the insertion tube 511, the offset of the gasket 514 and the leakage of coolant caused by assembly misalignment, and improve the connection reliability of the cover plate 51 after repeated disassembly and assembly.

[0045] Optionally, see Figure 1 , Figure 8 and Figure 9 The tensioning mechanism 6 includes a support plate 61 disposed on one side of the frame 1. The surface of the support plate 61 is provided with equally spaced fixing holes, and an electric telescopic rod 62 is fixedly installed in the fixing holes. A mounting base 63 is fixedly installed at the telescopic end of the electric telescopic rod 62. A pressure sensor 65 is fixedly installed on the bottom inner wall of the mounting base 63. A mounting block 66 is movably installed in the mounting base 63, and a tensioning wheel 64 is rotatably disposed on the upper surface of the mounting block 66.

[0046] In this embodiment, the support plate 61 is fixed to one side of the frame 1. Multiple fixing holes are provided on the surface of the support plate 61, and the position of each fixing hole corresponds to the copper wire path of different drawing passes. The electric telescopic rod 62 is fixed in the corresponding fixing hole, and its telescopic end is connected to the mounting base 63. The mounting block 66 can generate limited displacement within the mounting base 63 along the force direction. The lower part of the mounting block 66 corresponds to the pressure sensor 65, and the upper part rotatably mounts the tension wheel 64. When the copper wire passes over the tension wheel 64, it generates pressure on the tension wheel 64, which is transmitted to the pressure sensor 65 via the mounting block 66. The operator can determine the copper wire tension based on the detection value of the pressure sensor 65. In an optional embodiment, the pressure sensor 65 and the electric telescopic rod 62 are electrically connected to a conventional controller, and the controller controls the extension and retraction of the electric telescopic rod 62 according to a preset tension range.

[0047] When the detection pressure is lower than the set range, the electric telescopic rod 62 pushes the mounting base 63 to move, causing the tensioning wheel 64 to increase the deflection and wrap angle of the copper wire, thereby increasing the tension. When the detection pressure is too high, the electric telescopic rod 62 moves in the opposite direction, reducing the deflection of the copper wire and releasing some tension. By adjusting the different drawing passes separately, differences in die resistance, copper wire diameter, and running speed can be compensated, reducing the risk of skipping, loosening, and wire breakage.

[0048] Optionally, see Figure 1 and Figure 10 A chip collection platform 71 is also provided on one side of the frame 1, and the multi-mode component 3 is located above the chip collection platform 71. A collection box 73 is movably installed in the chip collection platform 71, and a chip discharge hole 72 corresponding to the collection box 73 is opened on the surface of the chip collection platform 71.

[0049] In this embodiment, the chip collection platform 71 is fixedly connected to the frame 1, and its upper surface is located below the wire routing groove 34 and the wire drawing die 33, and has a chip removal hole 72. The chip removal hole 72 can be set as a strip hole, a round hole, or a funnel-shaped hole to allow debris falling from the multi-die assembly 3 to pass through. The collection box 73 is installed inside the chip collection platform 71 by a pull-out method and corresponds vertically to the chip removal hole 72; copper chips blown away from the copper wire and the wire routing groove 34 by the chip cleaning module 4 fall onto the surface of the chip collection platform 71 under the action of gravity and the guiding airflow, and can be manually swept into the chip removal hole 72 and into the collection box 73. After the collection box 73 is full, it can be directly pulled out from the side of the chip collection platform 71 for cleaning. The collection box 73 can be made of stainless steel plate or corrosion-resistant engineering plastic. By setting up a chip collection platform 71 and a removable collection box 73, copper chips can be prevented from falling directly into the frame 1, transmission components and production area, making it easier to collect waste copper and reducing the possibility of chips entering moving parts such as bearings and transmission belts, causing wear or failure.

[0050] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A low-voltage power cable copper material processing and drawing device, comprising a frame (1), characterized in that, The frame (1) is rotatably equipped with a symmetrically distributed drive shaft (13) and driven shaft (11). A first wire reel (12) is fixedly mounted on the outer side of the driven shaft (11), and a second wire reel (14) is fixedly mounted on the outer side of the drive shaft (13). Both the first wire reel (12) and the second wire reel (14) have equally spaced wire annular grooves (15) on their outer sides. The inner diameter of the multiple wire annular grooves (15) increases sequentially in the direction away from the frame (1). The frame also includes: The drive mechanism (2) is mounted on the frame (1) and is used to guide the copper wire and drive the first wire reel (12) and the second wire reel (14) to rotate synchronously. Multi-mode assembly (3), the multi-mode assembly (3) is disposed on the outside of the frame (1), the multi-mode assembly (3) is located between the first wire spool (12) and the second wire spool (14), and the multi-mode assembly (3) includes a plurality of wire drawing dies (33) for passing the copper wire between the first wire spool (12) and the second wire spool (14) sequentially through the wire drawing dies (33) of different apertures on the multi-mode assembly (3) to realize multi-pass step-by-step diameter reduction operation; Tensioning mechanism (6) is located on one side of the frame (1) and below the multi-mode assembly (3) to control the tension of copper wire during feeding.

2. The low-voltage power cable copper material processing and drawing device according to claim 1, characterized in that, The drive mechanism (2) includes a first rotating wheel (22), a second rotating wheel (23), a third rotating wheel (24), and a fourth rotating wheel (25). A drive motor (26) and a reducer (27) are fixedly installed on the side wall of the frame (1). The drive end of the drive motor (26) is connected to the input end of the reducer (27). The output end of the reducer (27) is fixedly connected to the end of the drive shaft (13). The second rotating wheel (23) and the third rotating wheel (24) are fixedly installed on the outside of the drive shaft (13). The fourth rotating wheel (25) is fixedly installed on the end of the driven shaft (11). An output disk (21) is also rotatably arranged on one side of the frame (1). The first rotating wheel (22) is fixedly installed on the end of the output disk (21). The first rotating wheel (22) and the second rotating wheel (23) and the third rotating wheel (24) and the fourth rotating wheel (25) are all connected by a transmission belt.

3. The low-voltage power cable copper material processing and drawing device according to claim 1, characterized in that, The multi-mode assembly (3) includes a mold frame (31) fixedly installed on one side of the frame (1), and the mold frame (31) is located between the first wire reel (12) and the second wire reel (14). The mold frame (31) has placement slots (32) that correspond to and are staggered with the wire ring groove (15), so that the inlet and outlet of each wire drawing die (33) correspond to the tangential direction of the corresponding wire ring groove (15). The wire drawing die (33) is located in the placement slot (32). The mold frame (31) has wire routing slots (34) on both sides that correspond to the wire drawing die (33).

4. The low-voltage power cable copper material processing and drawing device according to claim 3, characterized in that, The multi-mode assembly (3) also includes a cleaning module (4) for cleaning the waste adhering to the surface of the copper wire. The cleaning module (4) includes a blowing channel (41) opened on one side of the mold frame (31). The bottom inner wall of the wiring groove (34) is provided with a blowing hole (42) connected to the blowing channel (41).

5. The low-voltage power cable copper material processing and drawing device according to claim 4, characterized in that, The mold frame (31) is provided with equidistant flow guides (43) above it, and the flow guides (43) are located directly above the wiring groove (34). The inner side of the flow guides (43) is set as a symmetrical arc surface to guide the airflow blown out of the air blowing hole (42) downward. The wiring groove (34) is also provided with an inlet (44) on one side for copper wire to enter the wiring groove (34).

6. The low-voltage power cable copper material processing and drawing device according to claim 5, characterized in that, The multi-mold assembly (3) further includes a limiting module (5) for limiting the position of the wire drawing die (33). The limiting module (5) includes a cover plate (51). The lower surface of the cover plate (51) is provided with a slot (58) corresponding to the wire drawing die (33). The outer side of the cover plate (51) is provided with a mounting hole, and a limiting bolt (56) is provided in the mounting hole. The upper surface of the die frame (31) is provided with a threaded groove (57), and the limiting bolt (56) is threadedly engaged with the threaded groove (57).

7. A low-voltage power cable copper material processing and drawing device according to claim 6, characterized in that, The mold frame (31) is provided with a liquid storage chamber (54). A liquid inlet pipe (55) communicating with the liquid storage chamber (54) is provided on one side of the mold frame (31). A cavity (52) is provided in the cover plate (51). A drain pipe (53) communicating with the cavity (52) is provided on one side of the cover plate (51). A slot (512) is provided on the upper surface of the mold frame (31). An insertion tube (511) communicating with the cavity (52) is provided at the bottom of the cover plate (51). The insertion tube (511) is inserted into the slot (512). A through groove (513) communicating with the liquid storage chamber (54) is provided on the bottom inner wall of the slot (512).

8. The low-voltage power cable copper material processing and drawing device according to claim 7, characterized in that, A washer (514) is provided in the slot (512), and when the insertion tube (511) is inserted into the slot (512), the bottom end of the insertion tube (511) abuts against the upper surface of the washer (514). A limiting rod (515) symmetrically arranged with the insertion tube (511) is also fixedly installed on the lower surface of the cover plate (51). A limiting groove (516) that cooperates with the limiting rod (515) is opened on the upper surface of the mold frame (31).

9. A low-voltage power cable copper material processing and drawing device according to claim 1, characterized in that, The tensioning mechanism (6) includes a support plate (61) disposed on one side of the frame (1). The surface of the support plate (61) is provided with equally spaced fixing holes, and an electric telescopic rod (62) is fixedly installed in the fixing holes. A mounting base (63) is fixedly installed at the telescopic end of the electric telescopic rod (62). A pressure sensor (65) is fixedly installed on the bottom inner wall of the mounting base (63). A mounting block (66) is movably installed in the mounting base (63), and a tensioning wheel (64) is rotatably disposed on the upper surface of the mounting block (66).

10. A low-voltage power cable copper material processing and drawing device according to claim 5, characterized in that, A chip collection platform (71) is also provided on one side of the frame (1), and the multi-mode component (3) is located above the chip collection platform (71). A collection box (73) is movably installed in the chip collection platform (71), and a chip discharge hole (72) corresponding to the collection box (73) is opened on the surface of the chip collection platform (71).

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