Preparation process and equipment for high-yield copper wires

Abstract

The invention provides a high-yield copper wire preparation process and equipment. The high-yield copper wire preparation process comprises the steps of raw material preparation, primary annealing treatment, large drawing, medium drawing, small drawing, secondary annealing treatment, surface treatment, winding, detection and packaging. The invention further provides equipment using the preparation technology for the high-yield copper wires, the equipment comprises a driving device, a coupler, a copper wire winding and unwinding device, a positioning rod, a supporting platform assembly, a telescopic device, a guide assembly, a PLC control system and a wire drawing machine, and the two ends of the coupler are connected with the driving device and the copper wire winding and unwinding device respectively; the copper wire winding and unwinding device is located on the top of the driving device. The supporting platform assembly is located on the top of the copper wire winding and unwinding device. The positioning rod penetrates through the supporting platform assembly; according to the device, dynamic adjustment and tension control are conducted on routing of the copper wires, and it is ensured that the copper wires cannot generate too large tension change and deviation in the preparation process.

Description

Technical Field

[0001] The invention belongs to the technical field of copper wire production, and in particular relates to a preparation process and equipment for copper wire with a high yield rate. Background Art

[0002] Copper wire has excellent electrical conductivity, corrosion resistance, mechanical properties and weldability. It is an indispensable key raw material in the wire and cable industry. With its excellent performance and relatively low cost, copper wire is widely used in the fields of electricity, communications, etc., providing strong support for the electrification of modern industry and life. In the process of copper wire production, multiple wire drawing processes are usually used to gradually draw thicker copper rods into copper wires. Copper wire drawing machines are commonly used equipment in the copper wire processing process. The wire release device used in conjunction with the copper wire drawing machine has an important influence on the effect of copper wire drawing.

[0003] In the prior art, the copper wire roller and the wire-releasing device are usually arranged as a concentric structure. After the copper wire to be drawn on the copper wire roller is changed in direction by a number of guide devices, the position of the copper wire roller is fixed, and the copper wire to be drawn is pulled by the wire drawing machine to drive the wire-releasing device to rotate. In this way, in order to ensure the stability of wire drawing, the wire outlet end of the wire-releasing device must be arranged on the rotation axis of the wire-releasing device. However, as the copper wire to be drawn on the copper wire roller continues to decrease, its effective radius will gradually decrease, and the weight of the copper wire roller and the resultant force it bears will change, resulting in the wire-releasing speed and the wire drawing speed cannot be matched, which is easy to damage the copper wire or even break the copper wire, affecting product quality or production efficiency.

[0004] The authorization announcement number CN209935530U discloses a wire-releasing device for a copper wire drawing machine. The utility model provides a wire-releasing device for a copper wire drawing machine, which relates to the technical field of wire drawing machines, including a fixed plate and a rotating wire-releasing mechanism. The fixed plate is fixedly mounted on the upper end of the wire drum, and the rotating wire-releasing mechanism is rotatably arranged on the upper end of the fixed plate. At the same time, the brake rod and the tension assembly are used in conjunction to keep the cable at a certain tension during the wire-releasing process, so that the rotating wire-releasing mechanism stops rotating when the wire drawing machine stops working. Although the utility model solves the problem of tangled wires, since the wire-releasing drum is rotating, the outlet end of the wire-releasing device must be arranged on the rotating axis of the wire-releasing device. As the effective radius of the copper wire on the copper wire roller gradually decreases, the force changes, resulting in a change in the wire-releasing speed, so that the wire-releasing speed and the wire drawing speed cannot match, which is easy to damage the copper wire or even break the copper wire, affecting product quality or production efficiency. Summary of the invention

[0005] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a high-yield copper wire preparation process and equipment, which effectively solves the problem that the outlet end of the pay-off device in the prior art must be set on the rotating axis of the pay-off device, but as the copper wire to be drawn on the copper wire roller continues to decrease, its effective radius will gradually decrease, and the weight of the copper wire roller and the combined force it bears will change, resulting in the pay-off speed and the drawing speed cannot match, which is easy to damage the copper wire or even break the copper wire, affecting the product quality or production efficiency. To achieve the above purpose, the present invention provides the following technical solutions: A high-yield copper wire preparation process, comprising the following steps: Step 1, raw material preparation: the raw material is a copper rod with a diameter of 8mm; Step 2: initial annealing treatment: eliminating the internal stress of the copper rod; Step 3: Large drawing: Use a wire drawing machine to draw the 8mm diameter copper rod into a 3mm diameter copper wire; Step 4: middle drawing: use a wire drawing machine to draw the 3mm diameter copper wire into a 1-2mm diameter copper wire; Step 5, small drawing: use a wire drawing machine to draw the copper wire with a diameter of 1-2 mm into a copper wire with a diameter of 0.08-0.38 mm; Step 6, re-annealing: re-annealing the 0.08-0.38 mm copper wire; Step 7, surface treatment: pickling and plating the re-annealed copper wire; Step 8, winding: winding the surface treated copper wire; Step nine, testing and packaging: The final thin copper wire is tested for size, strength and performance indicators, and qualified products can be shipped after packaging.

[0006] As a further improvement of the present invention, the wire drawing process S1 used in the above step 4 or step 5 mainly includes the following steps: S11, firstly, the copper wire at the outlet end of the copper wire coil of the copper wire winding and unwinding device is vertically passed through the copper wire winding and unwinding device for unwinding, and then sequentially passes through the first guide assembly, the second guide assembly and the third guide assembly and enters the wire drawing die of the wire drawing machine for wire drawing; S12, when the wire drawing machine is ready to draw wire, the signal is fed back to the PLC control system to start the rotating motor of the driving device; S13, the copper wire coil rotates forwardly and the wire drawing machine starts working.

[0007] As a further improvement of the present invention, a speed-consistent coordination method S2 is generated in the above-mentioned wire drawing step S1, and the adjustment process of the speed-consistent coordination method S2 is: When the wire-releasing speed is greater than the wire-drawing speed, the difference between the first tension sensor connected to the first guide assembly and the second tension sensor connected to the third guide assembly is negative, and when the difference reaches a preset value, the rotation speed of the rotating motor is reduced; When the wire-releasing speed is lower than the wire-drawing speed, the difference between the first tension sensor and the second tension sensor is positive, and when the difference reaches a preset value, the rotation speed of the rotating motor is increased; When the wire drawing machine fails to work abnormally, the value of the second tension sensor will be lower than the set lower limit value, and the PLC control system will shut down the rotating motor and the wire drawing machine, and check the wire drawing machine; When the rotating motor is idling and stops working abnormally, the value of the first tension sensor will be lower than the set lower limit value, and the PLC control system will shut down the rotating motor and the wire drawing machine and check the rotating motor.

[0008] The present invention also provides a device using the high-yield copper wire preparation process, the device comprising a driving device, a coupling, a copper wire reeling and unreeling device, a positioning rod, a support platform assembly, a telescopic device, a first guide assembly, a second guide assembly, a third guide assembly, a PLC control system and a wire drawing machine; One end of the coupling is connected to the driving device, and the other end of the coupling is connected to the copper wire reeling and unwinding device; the copper wire reeling and unwinding device is located at the top of the driving device; the support platform assembly is located at the top of the copper wire reeling and unwinding device; the positioning rod passes through the support platform assembly and extends into the interior of the copper wire reeling and unwinding device; the telescopic device is located at the top of the support platform assembly, and one end of the telescopic device is fixedly connected to the support platform assembly; the first guide assembly is located at the top of the support platform assembly, and the first guide assembly is fixedly connected to the other end of the telescopic device; the second guide assembly is located at the top of the support platform assembly and fixedly connected thereto; the third guide assembly is located at the top of the support platform assembly and fixedly connected thereto, and the second guide assembly is located between the first guide assembly and the third guide assembly.

[0009] As a further improvement of the present invention, the driving device further includes a motor support seat, and the motor support seat is fixedly connected to the base of the rotating motor.

[0010] As a further improvement of the present invention, the copper wire reeling and winding device also includes an upper end cover, a rotating shaft, a lower end cover, a bearing and a bearing seat, the rotating shaft passes through the upper end cover and the lower end cover, the rotating shaft and the lower end cover are fixedly connected, the bearing seat is fixedly connected to the upper end cover, the upper end cover is provided with a wire outlet groove and a positioning hole, the positioning rod extends into the positioning hole to limit the rotation of the upper end cover.

[0011] As a further improvement of the present invention, the support platform assembly includes a guide support plate and a guide rail, the guide support plate is an L-shaped plate, the guide rail is located on the top of the guide support plate and is fixedly connected thereto, a positioning rod mounting hole is provided on the guide support plate, and the position and specification of the positioning rod mounting hole are consistent with the position and specification of the positioning hole.

[0012] As a further improvement of the present invention, the telescopic device includes an electric push rod and a slider, the extension shaft of the electric push rod is fixedly connected to the slider, a threading hole is provided on the slider, and the unwinding time T minutes of the copper wire roll, the effective radius R centimeters of the copper wire roll and the speed v of the electric push rod have the following relationship: v=R / T; The first guide assembly includes a movable guide frame and a first guide wheel. The movable guide frame is fixedly connected to the slider, and the first guide wheel is rotatably connected to the movable guide frame.

[0013] As a further improvement scheme of the present invention, the second guide assembly includes a bending guide frame, an outer cylinder, an inner cylinder, a spring, a second guide wheel and a wire supporting frame. The bending guide frame is a U-shaped structure. The outer cylinder passes through the top of the bending guide frame and is fixedly connected thereto. The inner cylinder is located at the bottom of the outer cylinder. The inner cylinder and the outer cylinder are connected by a plurality of springs. A mounting plate is provided at the bottom of the inner cylinder. The second guide wheel is rotatably connected to the mounting plate of the inner cylinder. The wire supporting frame is fixedly connected to the bending guide frame. The wire supporting frame is located directly below the second guide wheel. A first wire supporting groove is provided on the wire supporting frame.

[0014] As a further improvement of the present invention, the third guide assembly includes a fixed guide frame and a third guide wheel, the fixed guide frame is located at the top of the guide support plate and is fixedly connected thereto, the third guide wheel and the fixed guide frame are rotatably connected, and a second wire support groove is provided at the top of the fixed guide frame, and the second wire support groove is located directly below the third guide wheel.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides a high-yield copper wire preparation process and equipment, which can stably pay out the wire through the arrangement of a driving device, a coupling, a copper wire reeling and unreeling device, a positioning rod, a support platform assembly, a telescopic device, a first guide assembly, a second guide assembly, a third guide assembly, a PLC control system and a wire drawing machine, thereby reducing problems such as copper wire breakage or deformation caused by unstable tension during the preparation process, thereby improving the yield.

[0016] (2) The present invention provides a high-yield copper wire preparation process and equipment, which can dynamically adjust the routing and control the tension of the copper wire to ensure that the copper wire will not experience excessive tension changes and deviations during the preparation process. A PLC control system is used for centralized control and automated operation, thereby improving production efficiency and consistency.

[0017] (3) The present invention provides a process and equipment for preparing copper wire with a high yield rate. Through the real-time movement of the telescopic device and the setting of the wire outlet slot, the copper wire outlet through the wire outlet slot and the first guide component are always in a vertical state, which effectively avoids the influence of the reduction of the effective radius of the copper wire roll on the wire pay-off speed.

[0018] (4) The present invention provides a process and equipment for preparing a high-yield copper wire. The position of the third guide component does not need to be set on the axis of the copper wire winding and unwinding device, which makes the application scope of the present invention wider. The copper wire winding and unwinding device of the present invention can also be used as a winding device for the previous wire drawing process. It only needs to adjust the direction of rotation of the rotating motor, thereby improving the versatility of the present invention.

[0019] (5) The present invention provides a high-yield copper wire preparation process and equipment. A spring is arranged in the second guide assembly. Under the combined action of gravity and elastic force, the second guide wheel can be fine-tuned in the height direction, thereby avoiding rigid impact, improving the stability and reliability of the preparation process, and thus improving the yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the copper wire reeling and unreeling device of the present invention in a fully reeled state; Figure 2 It is a schematic diagram of the overall structure of the copper wire reeling and unreeling device of the present invention in the fast zero-reel state; Figure 3 is a three-dimensional schematic diagram of the present invention; Figure 4 It is a structural schematic diagram of the copper wire reeling and unreeling device of the present invention; Figure 5 It is a structural schematic diagram of the connection between the telescopic device and the first guide assembly of the present invention; Figure 6 is a schematic structural diagram of a second guide assembly of the present invention; Figure 7 It is a schematic structural diagram of the internal spring of the second guide assembly of the present invention.

[0021] In the figure: 100, driving device; 110, rotating motor; 120, motor support seat; 200, coupling; 300, copper wire winding and unwinding device; 310, upper end cover; 311, wire outlet groove; 312, positioning hole; 320, rotating shaft; 330, lower end cover; 340, bearing; 350, bearing seat; 360, copper wire roll; 361, copper wire; 400, positioning rod; 500, supporting platform assembly; 510, guide support plate; 511, positioning rod mounting hole; 520, guide rail; 600, telescopic device; 610, electric push rod; 620, slider; 621, threading hole; 700, first guide assembly; 701, first tension sensor; 710, movable guide frame; 720, first guide wheel; 800, second guide assembly; 810, bending guide frame; 820, outer cylinder; 830, inner cylinder; 840, spring; 850, second guide wheel; 860, wire-supporting fixed frame; 861, first wire-supporting trough; 900, third guide assembly; 901, second tension sensor; 910, fixed guide frame; 911, second wire-supporting trough; 920, third guide wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be pointed out that the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0024] It should be understood that, in the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense.

[0025] Example 1

[0026] See attached Figures 1 to 7 The present embodiment provides a process for preparing a high-yield copper wire, comprising the following steps: Step 1: Raw material preparation: The raw material is a copper rod with a diameter of 8 mm. The copper rod needs to be mechanically cleaned to remove the surface oxide layer and impurities; Step 2: initial annealing treatment: placing the round copper rod in an annealing machine at 260-300°C for 1 hour to eliminate the internal stress of the copper rod and prevent the round copper rod from breaking during the wire drawing operation; Step 3: Large drawing: Use a wire drawing machine to draw the 8mm diameter copper rod into a 3mm diameter copper wire; Step 4: middle drawing: use a wire drawing machine to draw the 3mm diameter copper wire into a 1-2mm diameter copper wire; Step 5, small drawing: use a wire drawing machine to draw the copper wire with a diameter of 1-2 mm into a copper wire with a diameter of 0.08-0.38 mm; Step 6, re-annealing: re-annealing the 0.08-0.38 mm copper wire; Step 7, surface treatment: pickling and plating the re-annealed copper wire to improve surface finish and corrosion resistance; Step 8, winding: winding the surface treated copper wire; Step nine, testing and packaging: The final thin copper wire is tested for size, strength and other indicators, and qualified products can be shipped after packaging.

[0027] The wire drawing process S1 used in the above step 4 or step 5 mainly includes the following steps: S11, firstly, the copper wire 361 at the outlet end of the copper wire reel 360 of the copper wire reeling and unreeling device 300 is vertically passed through the copper wire reeling and unreeling device 300 for unwinding, and then sequentially passes through the first guide assembly 700, the second guide assembly 800 and the third guide assembly 900 and then enters the wire drawing die of the wire drawing machine for wire drawing; S12, when the wire drawing machine is ready to draw wire, a signal is fed back to the PLC control system to start the rotating motor 110 of the driving device 100; S13, the copper wire coil 360 rotates forward, and the wire drawing machine starts working.

[0028] In the wire drawing process S1, a speed-consistent coordination method S2 is generated, and the adjustment process of the speed-consistent coordination method S2 is as follows: When the wire-releasing speed is greater than the wire-drawing speed, the difference between the first tension sensor 701 connected to the first guide assembly 700 and the second tension sensor 901 connected to the third guide assembly 900 is negative. When the difference reaches a preset value, a signal is fed back to the PLC control system to appropriately reduce the speed of the rotating motor 110. When the wire-releasing speed is lower than the wire-drawing speed, the difference between the first tension sensor 701 and the second tension sensor 901 is positive. When the difference reaches a preset value, the signal is fed back to the PLC control system to appropriately increase the speed of the rotating motor 110. When the wire drawing machine fails to work due to an abnormality, the value of the second tension sensor 901 will be lower than the set lower limit value, and the PLC control system will shut down the rotating motor 110 and the wire drawing machine, and check the wire drawing machine; When the rotating motor 110 idles and stops working abnormally, the value of the first tension sensor 701 will be lower than its set lower limit, and the PLC control system will shut down the rotating motor 110 and the wire drawing machine, and check the rotating motor 110.

[0029] The present invention also provides an apparatus for using the high-yield copper wire preparation process, the apparatus comprising a drive device 100, a coupling 200, a copper wire reeling and unreeling device 300, a positioning rod 400, a support platform assembly 500, a telescopic device 600, a first guide assembly 700, a second guide assembly 800, a third guide assembly 900, a PLC control system and a wire drawing machine.

[0030] The driving device 100 includes a rotating motor 110 and a motor support base 120. The motor support base 120 is fixedly connected to the base of the rotating motor 110. The motor support base 120 is used to support the driving device 100, the coupling 200 and the copper wire winding and unwinding device 300. In order to facilitate speed regulation, the driving motor 110 usually uses a variable frequency motor.

[0031] One end of the coupling 200 is connected to the driving device 100 , and the other end of the coupling 200 is connected to the copper wire reeling and unreeling device 300 .

[0032] The copper wire reel 300 is located at the top of the driving device 100. The copper wire reel 300 includes an upper end cover 310, a rotating shaft 320, a lower end cover 330, a bearing 340, a bearing seat 350 and a copper wire roll 360. The rotating shaft 320 passes through the upper end cover 310 and the lower end cover 330. The rotating shaft 320 is thick in the middle and thin at both ends. The rotating shaft 320 and the lower end cover 330 are fixedly connected. The rotating shaft 320 and the upper end cover 310 are movably connected through the bearing 340. The bearing seat 350 is fixedly connected to the upper end cover 310. The upper end cover 310 is provided with a wire outlet groove 311 and a positioning hole 312. The wire outlet groove 311 keeps the copper wire 361 and the first guide assembly 700 in a vertical state. The positioning rod 400 extends into the positioning hole 312 to limit the rotation of the upper end cover 310.

[0033] To ensure that the bearing seat 350 and the wire outlet groove 311 do not interfere with each other, the bearing seat 350 is usually a double-cut edge bearing seat with a retaining ring to ensure that after the bearing 340 is installed, when the rotating shaft 320 is driven by the rotating motor to rotate, the lower end cover 330 rotates with the rotating shaft, while the upper cover plate 310 is fixed in position.

[0034] The positioning rod 400 passes through the supporting platform assembly 500 and extends into the interior of the copper wire reeling and unreeling device 300 .

[0035] The support platform assembly 500 is located at the top of the copper wire reeling and winding device 300; the support platform assembly 500 includes a guide support plate 510 and a guide rail 520, the guide support plate 510 is an L-shaped plate, the support plate 510 is fixed to the foundation through a support (not shown) and other structures, the guide rail 520 is located at the top of the guide support plate 510 and is fixed thereto by bolts, and a positioning rod mounting hole 511 is opened on the guide support plate 510, and the position and specification of the positioning rod mounting hole 511 are consistent with the position and specification of the positioning hole 312.

[0036] The telescopic device 600 is located at the top of the supporting platform assembly 500, and one end of the telescopic device 600 is fixedly connected to the supporting platform assembly 500; the first guide assembly 700 is located at the top of the supporting platform assembly 500, and the first guide assembly 700 is fixedly connected to the other end of the telescopic device 600. The first guide assembly 700 can be moved on the supporting platform assembly 500 by extending and retracting the telescopic device 600.

[0037] The telescopic device 600 includes an electric push rod 610 and a slider 620. The extension shaft of the electric push rod 610 is fixedly connected to the slider 620. A threading hole 621 is provided on the slider. The unwinding time T minutes of the copper wire roll 360, the effective radius R centimeters of the copper wire roll 360 and the speed v of the electric push rod 610 have the following relationship: v=R / T.

[0038] The first guide assembly 700 includes a movable guide frame 710 and a first guide wheel 720. The movable guide frame 710 and the slider 620 are fixedly connected. The first guide wheel 720 and the movable guide frame 710 are rotatably connected. The first guide wheel 720 and the movable guide frame 710 can be connected by an existing technology such as a pin, a buckle, and a bearing, but an internal thread structure needs to be set at the center position to facilitate the installation of the first tension sensor 701. The tension value between the copper wire 361 and the first guide wheel 720 is measured by the first tension sensor 701.

[0039] Since the first guide assembly 700 moves with the extension and retraction of the telescopic device 600, the copper wire 361 exiting through the outlet groove 311 and the first guide assembly 700 are always in a vertical state, effectively avoiding the influence of the reduction of the effective radius of the copper wire coil 360 on the pay-off speed.

[0040] The second guide assembly 800 is located at the top of the support platform assembly 500 and is fixedly connected thereto. The second guide assembly 800 includes a bending guide frame 810, an outer cylinder 820, an inner cylinder 830, a spring 840, a second guide wheel 850 and a wire support fixing frame 860. The bending guide frame 810 is a U-shaped structure. The outer cylinder 820 passes through the top of the bending guide frame 810 and is fixedly connected thereto. The inner cylinder 830 is located at the bottom of the outer cylinder 820. The inner cylinder 830 and the outer cylinder 820 are connected by a plurality of springs 840. A mounting plate is provided at the bottom of the inner cylinder 830. The second guide wheel 850 is rotatably connected to the mounting plate of the inner cylinder 830. The wire support fixing frame 860 is fixedly connected to the bending guide frame 810. The wire support fixing frame 860 is located directly below the second guide wheel 850. The wire support fixing frame 860 is provided with a first wire support groove 861.

[0041] Due to the existence of gravity, the spring 840 will be in a tensioned state at the beginning. When the copper wire 361 is subjected to an upward external force, the second guide wheel 850 can move upward, and the spring will first return to a normal state and be compressed, causing the spring to generate a downward elastic force. The second guide wheel moves downward, that is, under the combined action of gravity and elastic force, the second guide wheel 850 can be fine-tuned in the height direction, avoiding rigid impact, improving the stability and reliability of the preparation process, and thus improving the yield rate. The setting of the first wire supporting groove 861 can prevent the copper wire 361 from falling infinitely.

[0042] The third guide assembly 900 is located at the top of the support platform assembly 500 and is fixedly connected thereto, the second guide assembly 800 is located between the first guide assembly 700 and the third guide assembly 900, the third guide assembly 900 includes a fixed guide frame 910 and a third guide wheel 920, the fixed guide frame 910 is located at the top of the guide support plate 510 and is fixedly connected thereto, the third guide wheel 920 is rotatably connected to the fixed guide frame 910, a second wire support groove 911 is provided at the top of the fixed guide frame 910, and the second wire support groove 911 is located directly below the third guide wheel 920. The installation method of the third guide wheel 920 is the same as the installation method of the first guide wheel 720. Similarly, a second tension sensor 920 is installed on the third guide assembly 900. The wire feeding direction of the wire drawing machine is usually vertically upward, that is, the present invention can sense the wire unwinding condition of the copper wire reeling device 300 through the value of the first tension sensor 701, and the wire drawing condition of the wire drawing machine can be sensed through the value of the second tension sensor 901. Similarly, the setting of the first wire supporting groove 911 can prevent the copper wire 361 from falling infinitely.

[0043] It is not difficult to understand that the copper wire reeling and unreeling device 300 of the present invention can also be used as a winding device for the previous wire drawing process, and it is only necessary to adjust the direction of rotation of the rotating motor 110, thereby improving the versatility of the present invention.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for preparing copper wire with high yield, characterized in that: The following steps are involved: Step 1, raw material preparation: the raw material is a copper rod with a diameter of 8mm; Step 2: initial annealing treatment: eliminating the internal stress of the copper rod; Step 3: Large drawing: Use a wire drawing machine to draw the 8mm diameter copper rod into a 3mm diameter copper wire; Step 4: middle drawing: use a wire drawing machine to draw the 3mm diameter copper wire into a 1-2mm diameter copper wire; Step 5, small drawing: use a wire drawing machine to draw the copper wire with a diameter of 1-2 mm into a copper wire with a diameter of 0.08-0.38 mm; Step 6, re-annealing: re-annealing the 0.08-0.38 mm copper wire; Step 7, surface treatment: pickling and plating the re-annealed copper wire; Step 8, winding: winding the surface treated copper wire; Step nine, testing and packaging: The final thin copper wire is tested for size, strength and performance indicators, and qualified products can be shipped after packaging.

2. The process for preparing a high-yield copper wire according to claim 1, characterized in that: The wire drawing process S1 used in the above step 4 or step 5 mainly includes the following steps: S11, firstly, the copper wire (361) at the outlet end of the copper wire roll (360) of the copper wire reel (300) is vertically passed through the copper wire reel (300) for unwinding, and then sequentially passed through the first guide assembly (700), the second guide assembly (800) and the third guide assembly (900) and then enters the wire drawing die of the wire drawing machine for wire drawing; S12, when the wire drawing machine is ready to draw wire, a signal is fed back to the PLC control system to start the rotating motor (110) of the driving device (100); S13, the copper wire roll (360) rotates forwardly, and the wire drawing machine starts to work.

3. The process for preparing a high-yield copper wire according to claim 2, characterized in that: In the wire drawing process S1, a speed-consistent coordination method S2 is generated, and the adjustment process of the speed-consistent coordination method S2 is as follows: When the wire-releasing speed is greater than the wire-drawing speed, the difference between the first tension sensor (701) connected to the first guide assembly (700) and the second tension sensor (901) connected to the third guide assembly (900) is negative, and when the difference reaches a preset value, the rotation speed of the rotating motor (110) is reduced; When the wire-releasing speed is lower than the wire-drawing speed, the difference between the first tension sensor (701) and the second tension sensor (901) is positive, and when the difference reaches a preset value, the rotation speed of the rotating motor (110) is increased; When the wire drawing machine fails to work due to an abnormality, the value of the second tension sensor (901) will be lower than its set lower limit value, and the PLC control system will shut down the rotating motor (110) and the wire drawing machine, and check the wire drawing machine; When the rotating motor (110) idles and stops working abnormally, the value of the first tension sensor (701) will be lower than its set lower limit value, and the PLC control system will shut down the rotating motor (110) and the wire drawing machine, and check the rotating motor (110).

4. An apparatus using the high-yield copper wire preparation process according to claim 2, characterized in that: The device comprises a driving device (100), a coupling (200), a copper wire reeling and unreeling device (300), a positioning rod (400), a supporting platform assembly (500), a telescopic device (600), a first guide assembly (700), a second guide assembly (800), a third guide assembly (900), a PLC control system and a wire drawing machine; One end of the coupling (200) is connected to the driving device (100), and the other end of the coupling (200) is connected to the copper wire reeling and unreeling device (300); The copper wire reeling and unreeling device (300) is located on the top of the driving device (100); The support platform assembly (500) is located on the top of the copper wire reeling and unreeling device (300); The positioning rod (400) passes through the supporting platform assembly (500) and extends into the interior of the copper wire reeling and unreeling device (300); The telescopic device (600) is located on the top of the supporting platform assembly (500), and one end of the telescopic device (600) is fixedly connected to the supporting platform assembly (500); The first guide assembly (700) is located on the top of the support platform assembly (500), and the first guide assembly (700) is fixedly connected to the other end of the telescopic device (600); The second guide assembly (800) is located on the top of the support platform assembly (500) and is fixedly connected thereto; The third guide assembly (900) is located on the top of the support platform assembly (500) and is fixedly connected thereto, and the second guide assembly (800) is located between the first guide assembly (700) and the third guide assembly (900).

5. The device according to claim 4, characterized in that The driving device (100) further comprises a motor support seat (120), wherein the motor support seat (120) is fixedly connected to the base of the rotating motor (110).

6. The device according to claim 4, characterized in that The copper wire reeling and unreeling device (300) further comprises an upper end cover (310), a rotating shaft (320), a lower end cover (330), a bearing (340) and a bearing seat (350); the rotating shaft (320) passes through the upper end cover (310) and the lower end cover (330); the rotating shaft (320) and the lower end cover (330) are fixedly connected; the bearing seat (350) is fixedly connected to the upper end cover (310); a wire outlet groove (311) and a positioning hole (312) are provided on the upper end cover (310); the positioning rod (400) extends into the positioning hole (312) to limit the rotation of the upper end cover (310).

7. The device according to claim 6, characterized in that The support platform assembly (500) comprises a guide support plate (510) and a guide rail (520); the guide support plate (510) is an L-shaped plate; the guide rail (520) is located on the top of the guide support plate (510) and is fixedly connected thereto; a positioning rod mounting hole (511) is provided on the guide support plate (510); the position and specification of the positioning rod mounting hole (511) are consistent with the position and specification of the positioning hole (312).

8. The device according to claim 4, characterized in that The telescopic device (600) comprises an electric push rod (610) and a slider (620), the extension shaft of the electric push rod (610) and the slider (620) are fixedly connected, the slider is provided with a threading hole (621), the unwinding time T minutes of the copper wire roll (360), the effective radius R centimeters of the copper wire roll (360) and the speed v of the electric push rod (610) have the following relationship: v=R / T; The first guide assembly (700) comprises a movable guide frame (710) and a first guide wheel (720); the movable guide frame (710) and the slider (620) are fixedly connected; and the first guide wheel (720) and the movable guide frame (710) are rotatably connected.

9. The device according to claim 4, characterized in that The second guide assembly (800) comprises a bending guide frame (810), an outer cylinder (820), an inner cylinder (830), a spring (840), a second guide wheel (850) and a wire support fixing frame (860); the bending guide frame (810) is a U-shaped structure; the outer cylinder (820) passes through the top of the bending guide frame (810) and is fixedly connected thereto; the inner cylinder (830) is located at the bottom of the outer cylinder (820); the inner cylinder (830) and the wire support fixing frame (860) are connected to each other. The outer cylinders (820) are connected via a plurality of springs (840); a mounting plate is provided at the bottom of the inner cylinder (830); the second guide wheel (850) is rotatably connected to the mounting plate of the inner cylinder (830); the wire supporting fixing frame (860) is fixedly connected to the bending guide frame (810); the wire supporting fixing frame (860) is located directly below the second guide wheel (850); and a first wire supporting groove (861) is provided on the wire supporting fixing frame (860).

10. The device according to claim 7, characterized in that The third guide assembly (900) comprises a fixed guide frame (910) and a third guide wheel (920); the fixed guide frame (910) is located on the top of the guide support plate (510) and is fixedly connected thereto; the third guide wheel (920) and the fixed guide frame (910) are rotatably connected; a second wire supporting groove (911) is provided on the top of the fixed guide frame (910); and the second wire supporting groove (911) is located directly below the third guide wheel (920).

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