An electrical wire extrusion production apparatus

Abstract

The utility model relates to the technical field of wire extrusion production, especially to a kind of wire extrusion production device, it includes extrusion module, self-adapting cooling unit, on-line detection feedback system and adjusting assembly.Extrusion module is equipped with adjustable mould assembly, self-adapting cooling unit includes multiple groups of independent cooling channel of temperature control, on-line detection feedback system monitors wire quality in real time by laser diameter measuring instrument and surface defect detector, adjusting assembly dynamically adjusts extrusion parameter.The utility model can realize the comprehensive promotion of cooling uniformity, equipment integration and intelligent control level, applicable to a variety of specifications wire production, with compact structure, easy operation, product quality stable and the like Advantages, with higher practical value and market competitiveness.

Description

Technical Field

[0001] This utility model belongs to the technical field of wire production equipment, specifically a wire extrusion production device. Background Technology

[0002] In the wire and cable manufacturing industry, the performance of wire extrusion production equipment has a significant impact on product quality and production efficiency. Currently, some wire extrusion equipment with a high level of automation has emerged on the market, but there is still room for improvement in terms of cooling uniformity, equipment integration, and intelligent control level.

[0003] For example, the Chinese invention patent (patent number: CN104392804B) discloses a "high-speed wire extrusion production line," which includes, in sequence, a spool-loading machine, a tension device, a preheating device, an extrusion auxiliary machine, an extrusion main machine, a cooling water tank, a dryer, a printing machine, a traction tension mechanism, a take-up mechanism, and an electrical control device. A rear cooling water tank, a cooling rotary box, and a rear dryer are located between the printing machine and the traction tension mechanism. A wire reel conveying robot and a conveying device are located after the take-up mechanism. Furthermore, a front diameter gauge and a rear diameter gauge are provided to monitor wire diameter changes in real time and feed them back to the electrical control system for closed-loop control. While this invention improves production speed, its cooling system uses a fixed water spray method, which has poor adaptability to different wire specifications and can easily cause uneven insulation layer thickness. At the same time, the overall equipment layout is complex, occupies a large area, and the control system lacks intelligent algorithm support, making it difficult to achieve dynamic optimization and adjustment of process parameters.

[0004] For example, the Chinese invention patent (patent number: CN110993191B) discloses a "Wire and Cable Extrusion Production Device," whose specification states that it includes an extrusion head for wire insulation installed at the outlet end of a conductor core annealing device. The extrusion head consists of two extrusion head fixing plates, a crystallizer cooling graphite tube, an extrusion die core, an extrusion forming head, and a clamping plate. All components are connected by bolts to form a stable structure. The advantages of this design are its compact structure, ease of maintenance, and ability to effectively improve temperature control accuracy during the extrusion process. However, its extrusion die structure is fixed and cannot be flexibly replaced or adjusted according to different product requirements; the cooling system relies solely on the internal cooling channels of the graphite tube, resulting in low cooling efficiency and affecting production cycle time; furthermore, the device lacks an online detection and feedback mechanism, making it difficult to guarantee product quality consistency, especially during high-speed continuous production, where dimensional deviations are prone to occur.

[0005] Therefore, we have made improvements to this and proposed a wire extrusion production device. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing wire extrusion production devices in terms of cooling uniformity, equipment integration, and intelligent control level, and to provide a wire extrusion production device that is compact in structure, easy to operate, and suitable for the production of various specifications of wires.

[0007] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides a wire extrusion production apparatus, comprising an extrusion module, an adaptive cooling unit, an online detection feedback system, and an adjustment component. The extrusion module has an adjustable die assembly at its outlet end, which is fixed to the extrusion module via a threaded connection. The adaptive cooling unit is located downstream of the extrusion module and contains multiple independently temperature-controlled cooling channels. The online detection feedback system is installed behind the adaptive cooling unit to monitor the outer diameter and surface quality of the wire in real time and transmit the data to a control terminal. The adjustment component is positioned between the extrusion module and the adaptive cooling unit to dynamically adjust the extrusion parameters based on the detection results.

[0008] The adjustable mold assembly includes an outer mold ring, an inner mold core, and a locking mechanism. The inner side of the outer mold ring has a threaded groove, and the inner mold core is connected to the outer mold ring through the threaded groove. The locking mechanism consists of two symmetrically distributed locking blocks, which are pressed against the outer side of the outer mold ring by springs to prevent the inner mold core from loosening.

[0009] As a preferred technical solution of this utility model, the adaptive cooling unit includes a cooling shell, a partition plate, and a cooling medium circulation pipeline. The cooling shell is a hollow cylindrical structure with multiple partition plates arranged axially inside. The partition plates divide the interior of the cooling shell into multiple independent cooling chambers. Each cooling chamber is equipped with a cooling medium circulation pipeline, which is connected to an external cooling medium supply system through a solenoid valve to achieve independent temperature control in different areas.

[0010] As a preferred technical solution of this utility model, the online detection feedback system includes a detection bracket, a laser diameter gauge, and a surface defect detector. The top of the detection bracket is provided with a slide rail. The laser diameter gauge and the surface defect detector are respectively mounted on the slide rail by sliders, and the distance between them can be adjusted according to the diameter of the wire. The output end of the laser diameter gauge is communicatively connected to the control terminal and is used to measure the outer diameter of the wire. The surface defect detector uses a high-resolution camera to capture minute defects on the surface of the wire.

[0011] As a preferred technical solution of this utility model, the adjustment assembly includes an adjustment rod, a drive motor, and a displacement sensor. One end of the adjustment rod is movably connected to the outlet end of the extrusion module, and the other end is fixedly connected to the output shaft of the drive motor. The displacement sensor is installed in the middle of the adjustment rod and is used to monitor the displacement of the adjustment rod in real time. The drive motor receives instructions from the control terminal and drives the adjustment rod to move axially, thereby adjusting the outlet gap of the extrusion module.

[0012] As a preferred technical solution of this utility model, the outer side of the cooling shell is provided with a heat insulation layer. The heat insulation layer is composed of multiple composite materials, including a high-temperature resistant fiber layer and a reflective film layer. The high-temperature resistant fiber layer is attached to the outer wall of the cooling shell, and the reflective film layer covers the outer side of the high-temperature resistant fiber layer to reduce heat loss to the outside.

[0013] As a preferred technical solution of this utility model, the surface of the partition plate is coated with a thermally conductive coating with a thickness of 0.1-0.3 mm. The thermally conductive coating is made of graphene-based composite material to improve the thermal conductivity of the partition plate and ensure that the cooling medium can quickly remove heat.

[0014] As a preferred technical solution of this utility model, the inlet end of the cooling medium circulation pipeline is provided with a flow regulating valve, which is driven by a stepper motor to precisely control the flow rate of the cooling medium; the outlet end of the cooling medium circulation pipeline is connected to a temperature sensor for real-time monitoring of the temperature change of the cooling medium.

[0015] As a preferred technical solution of this utility model, limit switches are provided at both ends of the slide rail. The limit switches are communicatively connected to the control terminal. When the laser diameter measuring instrument or surface defect detector moves to the limit position, the limit switches are triggered and send a signal to the control terminal to prevent equipment damage.

[0016] As a preferred technical solution of this utility model, the surface of the adjusting rod is provided with scale markings, the smallest scale marking being 0.01 mm, which is used to assist the operator in manually fine-tuning the outlet gap of the extrusion module.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] By incorporating an adjustable mold assembly, the shape of the extrusion module outlet can be flexibly adjusted, enabling the device to adapt to the production needs of wires of different specifications and avoiding the limitations of traditional fixed mold structures. Simultaneously, the locking mechanism within the adjustable mold assembly effectively prevents the inner mold core from loosening under high-pressure operating conditions, improving the stability and service life of the mold.

[0019] The adaptive cooling unit design, through multi-layer partitions and independently temperature-controlled cooling channels, significantly improves the uniformity and efficiency of the cooling system. The cooling medium circulation pipeline, combined with the application of solenoid valves and flow regulating valves, further enhances the controllability of the cooling process, enabling dynamic adjustment of cooling parameters based on the specific specifications and material properties of the wires, thereby avoiding the problem of uneven insulation layer thickness.

[0020] The introduction of an online inspection feedback system, through the coordinated operation of a laser diameter gauge and a surface defect detector, enables real-time monitoring of the outer diameter and surface quality of electrical wires. Inspection results are directly transmitted to the control terminal, and combined with the dynamic adjustment function of the regulating components, ensures consistent product quality. This is particularly effective in high-speed continuous production processes, significantly reducing the incidence of dimensional deviations and surface defects.

[0021] Furthermore, the precise design of the adjustment components, through the cooperation of the drive motor and displacement sensor, enables accurate adjustment of the extrusion module outlet gap, which is simple to operate and responds quickly. This design not only improves the automation level of the equipment but also reduces the need for manual intervention, further enhancing production efficiency.

[0022] In summary, this utility model solves the problems of uneven cooling, low equipment integration, and insufficient intelligence in the prior art by optimizing the structural design of the extrusion module, adaptive cooling unit, online detection feedback system, and adjustment components, and has high practical value and market competitiveness. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the wire extrusion production device according to an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the adjustable mold assembly according to an embodiment of the present utility model;

[0026] Figure 3 This is a cross-sectional structural schematic diagram of the adaptive cooling unit according to an embodiment of the present invention;

[0027] Figure 4 This is a partial enlarged view of the online detection feedback system according to an embodiment of the present utility model;

[0028] Figure 5This is a schematic diagram of the structure of the adjustment component according to an embodiment of the present utility model.

[0029] In the picture:

[0030] 1. Extrusion module; 2. Adaptive cooling unit; 3. Online detection feedback system; 4. Adjustment component; 5. Adjustable mold assembly; 6. Outer mold ring; 7. Inner mold core; 8. Locking mechanism; 9. Cooling shell; 10. Divider plate; 11. Cooling medium circulation pipeline; 12. Detection bracket; 13. Laser diameter gauge; 14. Surface defect detector; 15. Adjustment rod; 16. Drive motor; 17. Displacement sensor. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This utility model provides an electrical wire extrusion production device, the overall structure of which is as follows: Figure 1 As shown, the system includes an extrusion module 1, an adaptive cooling unit 2, an online detection feedback system 3, and an adjustment component 4. These main components are connected sequentially according to the process flow and work together to form a highly integrated production system. The extrusion module 1 is located at the beginning of the entire device, and its outlet end is equipped with an adjustable die assembly 5 for flexible adjustment of the wire's outer diameter. The adaptive cooling unit 2 is located downstream of the extrusion module 1 and has multiple independently temperature-controlled cooling channels inside to ensure uniform temperature distribution of the wire during cooling. The online detection feedback system 3 is installed behind the adaptive cooling unit 2 and uses a laser diameter gauge 13 and a surface defect detector 14 to monitor the wire's outer diameter and surface quality in real time. The adjustment component 4 is located between the extrusion module 1 and the adaptive cooling unit 2 and is used to dynamically adjust the outlet gap of the extrusion module 1 based on the online detection results.

[0033] The specific structure of the adjustable mold assembly 5 is as follows: Figure 2As shown, it mainly includes an outer mold ring 6, an inner mold core 7, and a locking mechanism 8. The outer mold ring 6 is a circular ring structure with a threaded groove on its inner side for connecting with the inner mold core 7. The inner mold core 7 is screwed into the outer mold ring 6 through the threaded groove, and the relative position of the two can be adjusted by rotation, thereby changing the outlet shape of the extrusion module 1. The locking mechanism 8 consists of two symmetrically distributed locking blocks, which are pressed against the outside of the outer mold ring 6 by springs. When the inner mold core 7 is adjusted to the appropriate position, the locking mechanism 8 fixes the inner mold core 7 to the outer mold ring 6 by the force of the spring, preventing it from loosening under high-voltage working conditions. This design allows the adjustable mold assembly 5 to adapt to the production needs of wires of different specifications, while improving the stability and service life of the mold.

[0034] The internal structure of the adaptive cooling unit 2 is as follows: Figure 3 As shown, its core components include a cooling shell 9, partition plates 10, and cooling medium circulation pipes 11. The cooling shell 9 is a hollow cylindrical structure with multiple partition plates 10 arranged axially inside, dividing the cooling shell 9 into multiple independent cooling chambers. Each cooling chamber is equipped with a cooling medium circulation pipe 11, which is connected to an external cooling medium supply system via a solenoid valve. The solenoid valve opens or closes according to the command of the control terminal, thereby achieving independent temperature control of different areas. The surface of the partition plate 10 is coated with a thermally conductive coating with a thickness of 0.1-0.3 mm. This coating is made of graphene-based composite material and has excellent thermal conductivity, enabling rapid heat transfer to the cooling medium. A heat insulation layer is provided on the outside of the cooling shell 9. The heat insulation layer consists of a high-temperature resistant fiber layer and a reflective film layer. The high-temperature resistant fiber layer is attached to the outer wall of the cooling shell 9, and the reflective film layer covers the outside of the high-temperature resistant fiber layer to reduce heat loss. The inlet end of the cooling medium circulation pipeline 11 is equipped with a flow regulating valve, which is driven by a stepper motor and can precisely control the flow rate of the cooling medium. The outlet end of the cooling medium circulation pipeline 11 is connected to a temperature sensor to monitor the temperature change of the cooling medium in real time and transmit the data to the control terminal.

[0035] The structure of the online detection feedback system 3 is as follows: Figure 4As shown, the system mainly includes a detection bracket 12, a laser diameter gauge 13, and a surface defect detector 14. The top of the detection bracket 12 is equipped with a slide rail, and limit switches are installed at both ends of the slide rail. The laser diameter gauge 13 and the surface defect detector 14 are respectively mounted on the slide rail via sliders, and the distance between them can be adjusted as the sliders move along the slide rail. The laser diameter gauge 13 uses high-precision laser measurement technology to monitor the outer diameter of the wire in real time and transmits the measurement results to a control terminal. The surface defect detector 14 uses a high-resolution camera to capture minute defects on the surface of the wire, and its output is also connected to the control terminal. When either the laser diameter gauge 13 or the surface defect detector 14 moves to the limit position of the slide rail, the limit switches are triggered and send a signal to the control terminal to prevent equipment damage. This design allows the online detection feedback system 3 to adapt to the detection needs of wires of different diameters and ensures the accuracy of the detection results.

[0036] The structure of adjustment component 4 is as follows Figure 5 As shown, it mainly includes an adjusting rod 15, a drive motor 16, and a displacement sensor 17. One end of the adjusting rod 15 is movably connected to the outlet end of the extrusion module 1, and the other end is fixedly connected to the output shaft of the drive motor 16. The surface of the adjusting rod 15 is marked with scale markings, with a minimum scale of 0.01 mm, to assist the operator in manually fine-tuning the outlet gap of the extrusion module 1. The displacement sensor 17 is installed in the middle of the adjusting rod 15 to monitor the displacement of the adjusting rod 15 in real time and transmit the data to the control terminal. The drive motor 16 receives commands from the control terminal and drives the adjusting rod 15 to move axially, thereby adjusting the outlet gap of the extrusion module 1. This design achieves precise adjustment of the outlet gap of the extrusion module 1, and is simple to operate and has a rapid response.

[0037] The working principle of this utility model is as follows: First, the wire raw material enters the adjustable mold assembly 5 through the extrusion module 1. The operator adjusts the position of the inner mold core 7 according to the specifications of the target wire and fixes the inner mold core 7 through the locking mechanism 8. Subsequently, the wire is extruded from the outlet end of the extrusion module 1 and enters the adaptive cooling unit 2. The multi-layer partition plate 10 in the cooling shell 9 divides the cooling chamber into multiple independent areas. The cooling medium circulation pipeline 11 in each area is independently temperature controlled by solenoid valves and flow regulating valves. The flow rate and temperature of the cooling medium are dynamically adjusted by the control terminal according to the material characteristics and specifications of the wire to ensure the uniformity and efficiency of the cooling process. After cooling, the wire enters the online detection feedback system 3. The laser diameter gauge 13 monitors the outer diameter of the wire in real time, and the surface defect detector 14 captures minor defects on the surface of the wire and transmits the detection results to the control terminal. If the detection results show that the outer diameter or surface quality of the wire does not meet the standards, the control terminal will send a command to the adjustment assembly 4, driving the motor 16 to move the adjustment rod 15 axially, thereby adjusting the outlet gap of the extrusion module 1 until the size and quality of the wire meet the requirements. Throughout the entire production process, all components work closely together, achieving automation and intelligentization in wire production.

[0038] This invention solves the problems of uneven cooling, low equipment integration, and insufficient intelligence in the prior art by optimizing the structural design of the extrusion module 1, adaptive cooling unit 2, online detection and feedback system 3, and adjustment component 4. It has high practical value and market competitiveness.

[0039] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0040] In actual production, the wire raw material is first introduced into the adjustable die assembly 5 through the extrusion module 1. The operator manually rotates the inner die core 7 to adjust its relative position to the outer die ring 6 according to the specifications of the target wire. Specifically, the inner die core 7 is screwed in or out along the threaded groove on the inner side of the outer die ring 6, thereby changing the gap size at the outlet end of the extrusion module 1. Once the inner die core 7 is adjusted to the appropriate position, the spring in the locking mechanism 8 presses the locking block, firmly fixing the inner die core 7 and preventing loosening under high pressure. This step ensures that the extrusion module 1 can adapt to the production needs of wires of different specifications, while improving the stability and service life of the die assembly.

[0041] Subsequently, the wire is extruded from the outlet end of the extrusion module 1 and enters the adaptive cooling unit 2. The multi-layer partition plate 10 inside the cooling housing 9 divides the cooling chamber into multiple independent areas, each with a cooling medium circulation pipe 11. The control terminal, based on the material properties and specifications of the wire, sends commands to the solenoid valves to open or close the cooling channels in the corresponding areas, and precisely controls the flow rate of the cooling medium by driving the flow regulating valve via a stepper motor. Temperature changes in the cooling medium are monitored in real time by a temperature sensor, and the data is fed back to the control terminal. The graphene-based composite thermally conductive coating on the surface of the partition plate 10 quickly transfers heat to the cooling medium, while the heat insulation layer on the outside of the cooling housing 9 effectively reduces heat loss. Through this design, the adaptive cooling unit 2 achieves uniformity and efficiency in the cooling process, avoiding the uneven insulation layer thickness problem that may occur with traditional cooling methods.

[0042] After cooling, the wire enters the online inspection feedback system 3. A laser diameter gauge 13 and a surface defect detector 14 monitor the wire's outer diameter and surface quality in real time. The laser diameter gauge 13 uses high-precision laser measurement technology to transmit the measurement results to the control terminal; the surface defect detector 14 uses a high-resolution camera to capture minute imperfections on the wire's surface and sends the image information to the control terminal for analysis. If the inspection results show that the wire's outer diameter or surface quality does not meet preset standards, the control terminal will issue an adjustment command to the adjustment component 4. Furthermore, the sliding rail design of the online inspection feedback system 3 allows the laser diameter gauge 13 and the surface defect detector 14 to flexibly adjust their spacing according to changes in the wire's diameter, thereby meeting the inspection requirements of wires of different specifications.

[0043] After receiving instructions from the control terminal, the adjustment assembly 4 drives the adjustment rod 15 axially via the drive motor 16, thereby dynamically adjusting the outlet gap of the extrusion module 1. The displacement sensor 17 monitors the displacement of the adjustment rod 15 in real time and feeds the data back to the control terminal to ensure the accuracy of the adjustment process. The scale markings on the surface of the adjustment rod 15 assist the operator in manual fine-tuning, with a minimum scale of 0.01 mm, further improving the adjustment accuracy. Through this closed-loop control mechanism, the adjustment assembly 4 can quickly respond to signals from the online detection feedback system 3, ensuring that the size and quality of the wire meet the requirements.

[0044] Throughout the production process, all components work closely together to form a highly integrated automated production system. For example, when producing wires of a specific specification, the control terminal automatically adjusts the flow rate and temperature of the cooling medium according to preset process parameters. Simultaneously, the online detection and feedback system 3 monitors product quality in real time and feeds the data back to the control terminal. If an anomaly is detected, the adjustment component 4 quickly adjusts the outlet gap of the extrusion module 1 until the product meets the standard. This collaborative working mechanism not only significantly improves production efficiency but also ensures the consistency of product quality.

[0045] In summary, this utility model solves the problems of uneven cooling, low equipment integration, and insufficient intelligence in the prior art by optimizing the structural design of the extrusion module 1, the adaptive cooling unit 2, the online detection and feedback system 3, and the adjustment component 4. It has high practical value and market competitiveness.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wire extrusion production apparatus, characterized in that, The device includes an extrusion module (1), an adaptive cooling unit (2), an online detection feedback system (3), and an adjustment component (4). The outlet end of the extrusion module (1) is provided with an adjustable mold assembly (5), which is fixed to the extrusion module (1) by a threaded connection. The adaptive cooling unit (2) is located downstream of the extrusion module (1) and contains multiple sets of independently temperature-controlled cooling channels. The online detection feedback system (3) is installed behind the adaptive cooling unit (2). The adjustment component (4) is located between the extrusion module (1) and the adaptive cooling unit (2).

2. The wire extrusion production apparatus according to claim 1, characterized in that, The adjustable mold assembly (5) includes an outer mold ring (6), an inner mold core (7), and a locking mechanism (8). The inner side of the outer mold ring (6) is provided with a threaded groove. The inner mold core (7) is connected to the outer mold ring (6) through the threaded groove. The locking mechanism (8) consists of two symmetrically distributed locking blocks. The locking blocks are pressed against the outer side of the outer mold ring (6) by springs.

3. The wire extrusion production apparatus according to claim 1, characterized in that, The adaptive cooling unit (2) includes a cooling shell (9), a partition plate (10), and a cooling medium circulation pipeline (11). The cooling shell (9) is a hollow cylindrical structure with multiple partition plates (10) arranged axially inside. The partition plates (10) divide the interior of the cooling shell (9) into multiple independent cooling chambers. Each cooling chamber is equipped with a cooling medium circulation pipeline (11), which is connected to an external cooling medium supply system through a solenoid valve.

4. The wire extrusion production apparatus according to claim 1, characterized in that, The online detection feedback system (3) includes a detection bracket (12), a laser diameter gauge (13), and a surface defect detector (14). The top of the detection bracket (12) is provided with a slide rail. The laser diameter gauge (13) and the surface defect detector (14) are respectively mounted on the slide rail by sliders. The distance between them can be adjusted. The output end of the laser diameter gauge (13) is connected to the control terminal. The surface defect detector (14) uses a high-resolution camera.

5. The wire extrusion production apparatus according to claim 1, characterized in that, The adjustment assembly (4) includes an adjustment rod (15), a drive motor (16), and a displacement sensor (17). One end of the adjustment rod (15) is movably connected to the outlet end of the extrusion module (1), and the other end is fixedly connected to the output shaft of the drive motor (16). The displacement sensor (17) is installed in the middle of the adjustment rod (15) and is used to monitor the displacement of the adjustment rod (15) in real time.

6. The wire extrusion production apparatus according to claim 3, characterized in that, The cooling housing (9) is provided with a heat insulation layer on the outside. The heat insulation layer is composed of a high-temperature resistant fiber layer and a reflective film layer. The high-temperature resistant fiber layer is attached to the outer wall of the cooling housing (9), and the reflective film layer covers the outside of the high-temperature resistant fiber layer.

7. The wire extrusion production apparatus according to claim 3, characterized in that, The surface of the partition plate (10) is coated with a thermally conductive coating, the thickness of which is 0.1 mm to 0.3 mm, and the material is a graphene-based composite material.

8. The wire extrusion production apparatus according to claim 3, characterized in that, The inlet end of the cooling medium circulation pipeline (11) is equipped with a flow regulating valve, which is driven by a stepper motor, and the outlet end of the cooling medium circulation pipeline (11) is connected to a temperature sensor.

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