Copper wire drawing machine for cable production

Abstract

The invention relates to the technical field of wire drawing equipment, in particular to a copper wire drawing machine for cable production, which comprises a rack, a plurality of fixing devices are arranged on the rack at intervals along the horizontal direction, and a wire drawing die is detachably arranged on the inner side of each fixing device. A lubricating device for lubricating a copper wire section in the wire drawing die is arranged on the rack and is positioned on the lower side of the wire drawing die; and a cooling device for cooling the wire-drawing die is arranged on the rack and is positioned on the upper side of the wire-drawing die. In the working process, the wire-drawing die can be rapidly cooled, the influence of the temperature on the wire-drawing die is reduced, the service life of the wire-drawing die is prolonged, and the wire-drawing effect is improved.

Description

Technical Field

[0001] This invention relates to the field of wire drawing equipment technology, and in particular to a copper wire drawing machine for cable production. Background Technology

[0002] Wire drawing dies are tools used in metal pressure processing to force metal through them under external force, compressing the metal's cross-sectional area and achieving the required shape and size. However, existing wire drawing dies, during prolonged use, experience a rapid increase in internal temperature. The inability to dissipate this heat quickly during extended operation easily affects the wire drawing effect and processing efficiency. Furthermore, excessively high temperatures at the die's center accelerate wear. Wear initially produces a ring-shaped wear pattern in the central area, gradually leading to transverse or longitudinal cracks. These debris and cracks result in scratches on the drawn surface. Therefore, these dies do not meet current requirements. Summary of the Invention

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a copper wire drawing machine for cable production. During operation, it can quickly cool down the wire drawing die, reduce the impact of temperature on the die, extend its service life, and improve the wire drawing effect.

[0004] (II) Technical Solution To achieve the above objectives, this application provides a copper wire drawing machine for cable production, including a frame. Multiple fixing devices are arranged at horizontal intervals on the frame. A wire drawing die is detachably installed inside each fixing device. A lubrication device for lubricating the copper wire segment inside the wire drawing die is installed on the frame and below the wire drawing die. A cooling device for cooling the wire drawing die is installed on the frame and above the wire drawing die.

[0005] Preferably, a traction device is provided between two adjacent fixing devices.

[0006] Preferably, the fixing device includes a mounting plate, which is vertically fixed to the frame. A fixed module is integrally formed on the side of the mounting plate away from the frame, and a moving module is detachably mounted on the fixed module. A first mounting groove is provided on the side of the fixed module near the moving module, and a second mounting groove is provided on the side of the moving module near the fixed module. The wire drawing die is detachably mounted between the first mounting groove and the second mounting groove.

[0007] Preferably, the fixed module has positioning grooves on its side near the moving module and on its upper and lower sides of the first mounting groove. Positioning blocks are provided on the moving module's side near the fixed module and on its upper and lower sides of the second mounting groove. Each positioning block corresponds to a positioning groove. When the moving module and the fixed module are engaged, the positioning block is fitted into the positioning groove. A first positioning hole is provided on the fixed module, and a second positioning hole is provided on the moving module. Positioning bolts are provided in both the first and second positioning holes. One end of the positioning bolt passes through the second positioning hole and is threadedly connected to the first positioning hole.

[0008] Preferably, the wire drawing die is rectangular, and a wire drawing hole is provided in the middle of the wire drawing die. The wire drawing hole includes an inlet hole section, a lubrication hole section, a sizing hole section and an outlet hole section arranged in sequence. A rectangular first limiting groove is formed on the fixed module and in the middle section of the first mounting groove. A rectangular second limiting groove is formed on the moving module and in the middle section of the second mounting groove. The wire drawing die is partially fitted into the first limiting groove and partially fitted into the second limiting groove.

[0009] Preferably, the wire drawing die has an annular first cooling groove on its outer side, the first cooling groove being located outside the sizing hole section; a second cooling groove is provided on the fixed module and located inside the first limiting groove; a third cooling groove is provided on the moving module and located inside the second limiting groove; the second and third cooling grooves are arranged in an annular shape, and the second and third cooling grooves surround the first cooling groove from the outside; the cooling device is connected to the second and third cooling grooves.

[0010] Preferably, baffles are provided in the first cooling tank at the gap where the fixed module and the moving module meet, and the baffles are flush with the outer side of the wire drawing die; the two ends of the second cooling tank form first end plates on the side closer to the fixed module and the moving module, and the two ends of the third cooling tank form second end plates on the side closer to the fixed module and the moving module, and the first end plates and the second end plates abut against the baffles; sealing grooves are provided on the wire drawing die on both sides of the first cooling tank and on the baffles, and sealing elements are provided in the sealing grooves; the sealing elements include a first sealing ring and a second sealing ring, the first sealing ring and the second sealing ring are located on both sides of the first cooling tank, and a first sealing strip and a second sealing strip are connected between the first sealing ring and the second sealing ring, and a first sealing strip and a second sealing strip are embedded in each baffle, and the first sealing strip is pressed by the baffle and the first end plate, and the second sealing strip is pressed by the baffle and the second end plate.

[0011] Preferably, a partition is integrally formed on the fixed module and located in the middle of the second cooling tank. The partition extends out of the second cooling tank and is fitted into the first cooling tank. The cooling device includes a refrigerant tank, a refrigerant pump, a refrigerant pipe, and a return pipe. The refrigerant tank is fixed on the frame and located above the wire drawing die. The refrigerant pump is fixed inside the refrigerant tank. The outlet end of the refrigerant pump is connected to the refrigerant pipe, and the other end of the refrigerant pipe is connected to the second cooling tank. One end of the return pipe is connected to the refrigerant tank, and the other end is connected to the second cooling tank. The connection points of the refrigerant pipe and the return pipe with the second cooling tank are located on both sides of the partition.

[0012] Preferably, the lubrication device includes a lubricating oil tank, a lubricating oil pump, an oil supply pipe, and an oil nozzle; the lubricating oil tank is fixedly installed on the frame, and the installation position is below the wire drawing die; the lubricating oil pump is installed on the frame, the oil inlet end of the lubricating oil pump is connected to the lubricating oil tank, and the oil outlet end of the lubricating oil pump is connected to the oil supply pipe; the oil nozzle is detachably installed on the fixed module or the moving module, the oil nozzle is L-shaped, the oil outlet end of the oil nozzle is close to the inlet hole section, and can spray oil into the inlet hole section; the oil inlet end of the oil nozzle is connected to the oil supply pipe.

[0013] Preferably, the traction device includes a support shaft, a support wheel, and a drive motor; the support shaft is rotatably connected to the frame and located between adjacent wire drawing dies, and a support wheel is fixedly connected to each support shaft. An annular groove is provided on the outer side of the support wheel, and copper wire is wound in the annular groove; the drive motor drives the support shaft to rotate synchronously.

[0014] (III) Beneficial Effects This invention provides a copper wire drawing machine for cable production. A fixing device mounted on the frame allows for the detachable installation of the drawing die in the middle. Before operation, an appropriate drawing die is selected based on the copper wire to be drawn and the required wire size, and then fixedly installed within the fixing device. The detachable connection facilitates both the replacement and maintenance of the drawing die, as well as the installation of cooling and lubrication devices. This application incorporates cooling and lubrication devices on the frame, and uses the fixing device to cool the inner drawing die and lubricate the copper wire. This rapid cooling of the drawing die reduces its impact on the drawing die's lifespan and improves the drawing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a copper wire drawing machine for cable production according to the present invention; Figure 2 This is a schematic diagram highlighting the fixing device of the present invention; Figure 3 This is a cross-sectional view highlighting the fixing device and the wire drawing die of the present invention; Figure 4 This is an exploded view of the protruding fixing device and wire drawing die of the present invention; Figure 5 This is a schematic diagram highlighting the defined modules of the present invention; Figure 6 This is a schematic diagram of the protruding moving module of the present invention; Figure 7 This is a schematic diagram of the first cooling groove protruding from the outside of the wire drawing die of the present invention; Figure 8 This is a cross-sectional view of the wire drawing die from another direction in this invention; Figure 9 This is a schematic diagram of the sealing element of the present invention; Figure 10 This is a schematic diagram highlighting the lubrication and cooling devices of the present invention.

[0016] Marked in the attached diagram: 100. Frame; 200. Fixing device; 210. Mounting plate; 220. Fixed module; 221. First mounting slot; 222. Positioning slot; 223. First positioning hole; 224. First limiting slot; 225. Second cooling tank; 226. First end plate; 227. Partition plate; 230. Moving module; 231. Second mounting slot; 232. Positioning block; 233. Second positioning hole; 234. Positioning bolt; 235. Second limiting slot; 236. Third cooling tank; 237. Second end plate; 300. Wire drawing die; 310. Wire drawing hole; 311. Inlet hole section; 312. Lubrication hole section; 313. Sizing hole section; 31 4. Outlet section; 320. First cooling tank; 330. Baffle; 340. Sealing groove; 350. Seal; 351. First sealing ring; 352. Second sealing ring; 353. First sealing strip; 354. Second sealing strip; 400. Lubrication device; 410. Lubricating oil tank; 420. Lubricating oil pump; 430. Oil supply pipe; 440. Oil injector; 500. Cooling device; 510. Refrigerant tank; 520. Refrigerant pump; 530. Refrigerant pipe; 540. Return pipe; 600. Traction device; 610. Support shaft; 620. Support wheel; 621. Annular groove; 630. Drive motor; 640. Double row sprocket. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example This invention provides a copper wire drawing machine for cable production, see [link to relevant documentation]. Figures 1-10 The system includes a frame 100, on which multiple fixing devices 200 are arranged at horizontal intervals. A wire drawing die 300 is detachably installed inside each fixing device 200. A lubrication device 400 for lubricating the copper wire segment inside the wire drawing die 300 is installed on the frame 100 below the wire drawing die 300. A cooling device 500 for cooling the wire drawing die 300 is installed on the frame 100 above the wire drawing die 300. Before operation, an appropriate wire drawing die 300 is selected based on the copper wire to be drawn and the required wire size, and it is fixedly installed inside the fixing device 200. During operation, the copper wire to be drawn enters the wire drawing die 300 inside the fixing device 200 from one side and exits from the other side. During this process, the wire is gradually drawn through the wire drawing die 300, forming a copper wire that meets the specifications after passing through multiple wire drawing dies 300.

[0019] A traction device 600 is provided between two adjacent fixing devices 200. During the stretching process, the traction device 600 serves the purpose of traction, thereby improving the wire drawing effect.

[0020] The fixing device 200 includes a mounting plate 210, which is vertically fixed to the frame 100. A fixed module 220 is integrally formed on the side of the mounting plate 210 away from the frame 100. A movable module 230 is detachably installed on the fixed module 220.

[0021] A first mounting groove 221 is provided on the side of the fixed module 220 near the moving module 230, and a second mounting groove 231 is provided on the side of the moving module 230 near the fixed module 220; the wire drawing die 300 can be detachably installed between the first mounting groove 221 and the second mounting groove 231. The detachable connection method facilitates the replacement and maintenance of the wire drawing die 300, and also facilitates the installation of the cooling device 500 and the lubrication device 400.

[0022] Specifically, the fixed module 220 has positioning grooves 222 on the side of the fixed module 220 near the moving module 230 and on the upper and lower sides of the first mounting groove 221. Positioning blocks 232 are respectively provided on the side of the moving module 230 near the fixed module 220 and on the upper and lower sides of the second mounting groove 231. The positioning blocks 232 correspond one-to-one with the positioning grooves 222. When the moving module 230 and the fixed module 220 are engaged, the positioning blocks 232 are fitted into the positioning grooves 222. Through the positioning blocks 232 and the positioning grooves 222, the moving module 230 is limited. After the wire drawing die 300 is installed, the positioning blocks 232 bear the force during the wire drawing process, thereby making the force on both sides more balanced.

[0023] A first positioning hole 223 is provided on the fixed module 220, and a second positioning hole 233 is provided on the moving module 230. A positioning bolt 234 is provided in the first positioning hole 223 and the second positioning hole 233. One end of the positioning bolt 234 passes through the second positioning hole 233 and is threadedly connected to the first positioning hole 223. The moving module 230 and the fixed module 220 are connected and fixed by the positioning bolt, so that the two maintain a fixed relationship during operation. At the same time, due to the positioning groove 222 and the positioning block 232, the positioning groove 222 and the positioning block 232 bear a certain force during the wire drawing process, avoiding the risk of deformation of the positioning bolt due to tensile force.

[0024] The wire drawing die 300 is rectangular, and a wire drawing hole 310 is provided in the middle of the die. The wire drawing hole 310 includes an inlet section 311, a lubrication section 312, a sizing section 313, and an outlet section 314 arranged sequentially. The inlet section 311, lubrication section 312, and outlet section 314 are all tapered. The diameter of the inlet section 311 and lubrication section 312 is smaller at the end near the sizing section 313 and larger at the end away from the sizing section 313. Similarly, the diameter of the outlet section 314 is smaller at the end near the sizing section and larger at the other end. During wire drawing, the wire passes sequentially through the inlet section 311, lubrication section 312, sizing section 313, and outlet section 314. Lubrication occurs at the lubrication section 312 and inlet section 311, and wire is drawn and its diameter changes at the sizing section 313.

[0025] A rectangular first limiting groove 224 is formed on the fixed module 220 in the middle section of the first mounting groove 221, and a rectangular second limiting groove 235 is formed on the moving module 230 in the middle section of the second mounting groove 231. The wire drawing die 300 is partially fitted into the first limiting groove 224 and partially fitted into the second limiting groove 235. When fastened, the first limiting groove 224 and the second limiting groove 235 are fastened together to form a rectangular cavity. This rectangular cavity limits and fixes the wire drawing die 300, keeping it fixed between the fixed module 220 and the moving module 230.

[0026] The wire drawing die 300 has an annular first cooling groove 320 on its outer side. The first cooling groove 320 is located on the outer side of the sizing hole section 313. During operation, coolant is introduced into the annular first cooling groove 320 to cool and dissipate heat in a timely manner, so as to avoid affecting the wire drawing effect and reduce the wear of the sizing hole section 313.

[0027] A second cooling groove 225 is formed on the fixed module 220 and inside the first limiting groove 224. A third cooling groove 236 is formed on the moving module 230 and inside the second limiting groove 235. The second cooling groove 225 and the third cooling groove 236 form a ring, and the second cooling groove 225 and the third cooling groove 236 surround the first cooling groove 320 from the outside. The cooling device 500 is connected to the second cooling groove 225 and the third cooling groove 236. It can be understood that the second cooling groove 225 and the third cooling groove 236 combine from the outside to form a ring, closing the first cooling groove 320 from the outside. During operation, coolant is filled into the closed space of the first cooling groove 320, the second cooling groove 225 and the third cooling groove 236. This cools the sizing hole section 313.

[0028] In one embodiment, in order to better achieve the purpose of cooling and temperature reduction, baffles 330 are provided in the first cooling tank 320 and at the gap where the fixed module 220 and the moving module 230 are connected, and the first cooling tank 320 is connected by the inner side of the baffles 330.

[0029] The baffle 330 is flush with the outer side of the wire drawing die 300. The baffle 330 blocks the gap at the joint. The two ends of the second cooling tank 225 and the side of the moving module 230 near the fixed module 220 form the first end plate 226, and the two ends of the third cooling tank 236 and the side of the moving module near the fixed module 220 form the second end plate 237. The first end plate 226 and the second end plate 237 abut against the baffle 330.

[0030] Sealing grooves 340 are provided on the wire drawing die 300 and on both sides of the first cooling tank 320 and on the baffle 330. Sealing elements 350 are provided in the sealing grooves 340. The sealing elements 350 seal the area around the first cooling tank 320.

[0031] The sealing element 350 includes a first sealing ring 351 and a second sealing ring 352, which are located on both sides of the first cooling groove 320. A first sealing strip 353 and a second sealing strip 354 are connected between the first sealing ring 351 and the second sealing ring 352. A first sealing strip 353 and a second sealing strip 354 are fitted onto each baffle 330, and the first sealing strip 353 is pressed by the baffle 330 and the first end plate 226, while the second sealing strip 354 is pressed by the baffle 330 and the second end plate 237. Therefore, the sealing element 350 can greatly improve the sealing performance between the first cooling groove 320, the second cooling groove 225, and the third cooling groove 236.

[0032] A partition 227 is integrally formed on the fixed module 220 and located in the middle of the second cooling tank 225. The partition 227 extends out of the second cooling tank 225 and is fitted into the first cooling tank 320. The partition 227 separates the second cooling tank 225 and the first cooling tank 320, allowing coolant to enter from one side and return from the other side, thereby further improving the cooling effect.

[0033] Specifically, the cooling device 500 includes a refrigerant tank 510, a refrigerant pump 520, a refrigerant pipe 530, and a return pipe 540.

[0034] The refrigerant tank 510 is fixed on the frame 100 and located above the wire drawing die 300. The refrigerant pump 520 is fixed inside the refrigerant tank 510. The outlet end of the refrigerant pump 520 is connected to the refrigerant pipe 530, and the other end of the refrigerant pipe 530 is connected to the second cooling tank 225. One end of the return pipe 540 is connected to the refrigerant tank 510, and the other end is connected to the second cooling tank 225. The connection points of the refrigerant pipe 530, the return pipe 540, and the second cooling tank 225 are located on both sides of the partition 227. With the above arrangement, the coolant enters the first cooling tank 320 from one side of the partition 227, flows around once, reaches the other side of the partition 227, and enters the return pipe 540 from that side.

[0035] The lubrication device 400 includes a lubricating oil tank 410, a lubricating oil pump 420, an oil supply pipe 430, and an oil injector 440.

[0036] The lubricating oil tank 410 is fixedly installed on the frame 100, and the installation position is located below the wire drawing die 300.

[0037] A lubricating oil pump 420 is mounted on the frame 100. The inlet end of the lubricating oil pump 420 is connected to the lubricating oil tank 410, and the outlet end of the lubricating oil pump 420 is connected to the oil supply pipe 430. An oil injector 440 is detachably mounted on the stationary module 220 or the moving module 230. The oil injector 440 is L-shaped, with its outlet end close to the inlet orifice section 311 and capable of spraying oil into the inlet orifice section 311. The inlet end of the oil injector 440 is connected to the oil supply pipe 430. During operation, the oil in the lubricating oil tank 410 is drawn out and sprayed into the inlet orifice section 311 and the lubrication orifice section 312 by the oil injector 440.

[0038] The traction device 600 includes a support shaft 610, a support wheel 620, and a drive motor 630. The support shafts 610 are rotatably connected to the frame 100 and located between adjacent wire drawing dies 300. A support wheel 620 is fixedly connected to each support shaft 610. An annular groove 621 is provided on the outer side of each support wheel 620, and copper wire is wound within the annular groove 621. The drive motor 630 drives the support shafts 610 to rotate synchronously. Specifically, all support shafts 610 are equipped with double-row sprockets 640. Through the cooperation of the double-row sprockets 640 and the chain, all support shafts 610 are linked. When the drive motor 630 drives one support shaft 610 to rotate, the other support shafts 610 will rotate synchronously.

[0039] This invention provides a copper wire drawing machine for cable production. A fixing device 200 mounted on a frame 100 allows for the detachable installation of a drawing die 300 in the middle. Before operation, an appropriate drawing die 300 is selected based on the copper wire to be drawn and the required wire size, and then fixedly installed within the fixing device 200. This detachable connection facilitates the replacement and maintenance of the drawing die 300, and also allows for the installation of a cooling device 500 and a lubrication device 400. This application provides a cooling device 500 and a lubrication device 400 on the frame 100, and uses the fixing device 200 to cool the inner drawing die 300 and lubricate the copper wire. This allows for rapid cooling of the drawing die 300, reducing the impact of temperature on the drawing die 300, extending its service life, and improving the drawing effect.

[0040] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical 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 invention based on the specific circumstances. Without conflict, the embodiments and features in the embodiments of this invention can be combined with each other.

[0042] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A copper wire drawing machine for cable production, characterized in that, The utility model relates to a copper wire drawing device, including frame (100), a plurality of fixed devices (200) are arranged at the frame (100) and are spaced apart in horizontal direction, and the drawing die (300) is detachably arranged in each fixed device (200) inside, the lubricating device (400) that lubricates copper wire section in drawing die (300) is arranged on the frame (100) and is located drawing die (300) downside, and the cooling device (500) that cools drawing die (300) is arranged on the frame (100) and is located drawing die (300) upside.

2. A copper wire drawing machine for cable production according to claim 1, characterized in that, Traction device (600) is arranged between two adjacent fixed devices (200).

3. A copper wire drawing machine for cable production as claimed in claim 1, wherein, The fixed device (200) includes mounting plate (210), the mounting plate (210) is vertically fixed on the frame (100), the fixed die block (220) is integrally formed on the mounting plate (210) and is away from the side of the frame (100), and the movable die block (230) is detachably installed on the fixed die block (220). The first installation groove (221) and the second installation groove (231) are detachably installed between the fixed die block (220) and the movable die block (230).

4. A copper wire drawing machine for cable production according to claim 3, characterized in that, The fixed die block (220) is provided with positioning groove (222) on the side close to the movable die block (230) and located on the upper and lower sides of the first installation groove (221), and the movable die block (230) is provided with positioning block (232) on the side close to the fixed die block (220) and located on the upper and lower sides of the second installation groove (231). The positioning block (232) corresponds to the positioning groove (222), and when the movable die block (230) is buckled with the fixed die block (220), the positioning block (232) is embedded in the positioning groove (222). The first positioning hole (223) is arranged on the fixed die block (220), the second positioning hole (233) is arranged on the movable die block (230), the positioning bolt (234) is arranged in the first positioning hole (223) and the second positioning hole (233), one end of the positioning bolt (234) passes through the second positioning hole (233) and is screwed with the first positioning hole (223).

5. A copper wire drawing machine for cable production according to claim 3, characterized in that, The drawing die (300) is rectangular, the drawing hole (310) is arranged in the middle of the drawing die (300), and the drawing hole (310) includes inlet hole section (311), lubricating hole section (312), sizing hole section (313) and outlet hole section (314) arranged in sequence. The first limiting groove (224) is rectangular, and the second limiting groove (235) is rectangular.

6. A copper wire drawing machine for cable production according to claim 5, characterized in that, The first cooling groove (320) is annular, and the second cooling groove (225) and the third cooling groove (236) are annular and surround the first cooling groove (320).

7. A copper wire drawing machine for cable production according to claim 6, characterized in that, The first cooling groove (320) is annular, and the second cooling groove (225) and the third cooling groove (236) are annular and surround the first cooling groove (320). The first end plate (226) and the second end plate (237) abut against the baffle (330). The sealing groove (340) is arranged on the baffle (330) and the drawing die (300). The sealing member (350) comprises a first sealing ring (351) and a second sealing ring (352).

8. A copper wire drawing machine for cable production according to claim 6, characterized in that, The first limiting groove (224) is rectangular, and the second limiting groove (235) is rectangular. The cooling device (500) comprises a refrigerant tank (510), a refrigerant pump (520), a refrigerant pipe (530) and a return pipe (540); The refrigerant tank (510) is fixed on the rack (100) and above the drawing die (300), the refrigerant pump (520) is fixed in the refrigerant tank (510), the water outlet end of the refrigerant pump (520) is connected with the refrigerant pipe (530), the other end of the refrigerant pipe (530) is communicated with the second cooling tank (225), one end of the return pipe (540) is connected with the refrigerant tank (510) and the other end is communicated with the second cooling tank (225), the communication positions of the refrigerant pipe (530), the return pipe (540) and the second cooling tank (225) are located on both sides of the partition plate (227).

9. A copper wire drawing machine for cable production as claimed in claim 5 wherein, The lubricating device (400) comprises a lubricating oil tank (410), a lubricating oil pump (420), an oil supply pipe (430) and an oil nozzle (440); The lubricating oil tank (410) is fixed on the rack (100) and below the drawing die (300); The lubricating oil pump (420) is installed on the rack (100), the oil inlet end of the lubricating oil pump (420) is connected with the lubricating oil tank (410), and the oil outlet end of the lubricating oil pump (420) is connected with the oil supply pipe (430); The oil nozzle (440) is detachably installed on the fixed die block (220) or the movable die block (230), the oil nozzle (440) is L-shaped, the oil outlet end of the oil nozzle (440) is close to the inlet hole section (311) and can spray oil to the inlet hole section (311), and the oil inlet end of the oil nozzle (440) is connected with the oil supply pipe (430).

10. A copper wire drawing machine for cable production as claimed in claim 2, wherein, The traction device (600) comprises a support shaft (610), a support wheel (620) and a driving motor (630); The support shaft (610) is rotatably connected on the rack (100) and between adjacent drawing dies (300), the support wheel (620) is fixedly connected on each support shaft (610), the annular groove (621) is arranged on the outer side of the support wheel (620), and the copper wire is wound in the annular groove (621), and the driving motor (630) drives the support shaft (610) to rotate synchronously.

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