Cable copper wire tubular annealing production line and annealing method

Abstract

The invention relates to the technical field of power transmission, and provides a cable copper wire tubular annealing production line and an annealing method.The cable copper wire tubular annealing production line comprises an annealing furnace heating pipe, five first connecting pipes and a second connecting pipe, the five first connecting pipes are communicated with the interior of the heating pipe of the annealing furnace; according to the copper wire conveying device, the multiple sets of flexible clamping assemblies distributed in a rectangular mode are arranged in an inner cavity of the second connecting pipe, the first elastic piece is used for driving the connecting column to achieve elastic stretching and retracting, and a rotating guide structure composed of the L-shaped frame, the rotating shaft and the balls is matched, so that copper wires in conveying can be flexibly clamped and precisely guided; the balls synchronously rotate along with the copper wires, friction resistance can be greatly reduced, the surfaces of the copper wires are prevented from being scratched, the buffering effect of the first elastic pieces can meet the conveying requirements of the copper wires with different diameters, and copper wire offset or tensile deformation is prevented.

Description

Technical Field

[0001] This invention relates to the field of power transmission technology, and in particular to a copper wire tube annealing production line and annealing method for cables. Background Technology

[0002] In fields such as power transmission and communication engineering, cables serve as the core transmission carrier, and their performance directly determines transmission efficiency and operational stability. Copper wire, due to its excellent conductivity, ductility, and corrosion resistance, is the core raw material for cable conductors. However, during the drawing process of copper wire, the internal grains of the metal deform and refine, resulting in work hardening. This leads to increased hardness and decreased toughness of the copper wire, making it prone to breakage. This fails to meet the requirements of subsequent cable stranding, insulation coating, and other processing techniques, and also affects the conductivity of the final cable product. Therefore, annealing is an indispensable key process in the production of copper wire for cables. Its core purpose is to eliminate work hardening of the copper wire, restore the metal grain structure, and improve the flexibility and conductivity of the copper wire through heating, heat preservation, and cooling.

[0003] However, existing copper wire tube annealing production lines for cables still have many technical defects in actual operation, which seriously restrict the improvement of production efficiency and product quality. First, in terms of copper wire transmission and guidance, existing production lines mostly use rigid clamping structures of fixed size to limit the copper wire. This type of structure lacks buffering and adjustment capabilities. On the one hand, it cannot adapt to the processing needs of copper wires of different diameters. When changing the copper wire specifications, the entire clamping component needs to be replaced, which is cumbersome and increases production costs. On the other hand, the frictional resistance between the rigid clamp and the copper wire is large, which can easily cause scratches on the surface of the copper wire. At the same time, the copper wire is prone to deviation and stretching deformation during transmission, resulting in uneven distribution of multiple copper wires when entering the heating tube of the annealing furnace. Some copper wires are partially under-annealed due to transmission deviation, which greatly reduces the consistency of copper wire annealing quality.

[0004] Secondly, in terms of pipeline connection and maintenance, the heating tubes of the annealing furnace and the subsequent transmission pipelines in the existing production line are mostly connected by bolts or welding. Bolt fastening requires the use of various tools for disassembly and assembly, the operation process is complicated, and the long-term high temperature environment can easily cause the bolts to rust and loosen, affecting the pipeline sealing. Although the welding method provides a stable connection, it is not possible to disassemble and replace parts when the pipeline is damaged. The entire pipeline component must be replaced, resulting in extremely high maintenance costs. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art where rigid clamping structures of fixed dimensions are used to limit the copper wire, which lack buffering and adjustment capabilities. Furthermore, the heating tubes of annealing furnaces and subsequent transmission pipelines are mostly connected by bolts or welding, which makes it impossible to disassemble and replace parts. Instead, the entire pipeline assembly needs to be replaced, resulting in extremely high maintenance costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cable copper wire tube annealing production line: including an annealing furnace heating tube, the cable copper wire tube annealing production line further includes: Five first connecting pipes are installed at one end of the annealing furnace heating tube. The five first connecting pipes are equidistantly distributed and are connected to the interior of the annealing furnace heating tube. Five second connecting pipes are all located at the end of the five first connecting pipes that is away from the heating pipe of the annealing furnace, and the five second connecting pipes are all connected to the interior of the first connecting pipe; Multiple flexible clamping components are arranged in three groups inside the second connecting tube, and the multiple flexible clamping components are distributed in a rectangular shape; Multiple snap-fit ​​components are disposed on the contact surface between the second connecting pipe and the first connecting pipe, and the multiple snap-fit ​​components are arranged in a ring.

[0007] In a preferred embodiment, the flexible clamping assembly includes: A connecting cylinder is fixedly installed on the side wall of the inner cavity of the second connecting pipe; A first elastic element is disposed in the inner cavity of the connecting cylinder; A connecting post is disposed at one end of the connecting cylinder, and the connecting post is elastically connected to the connecting cylinder through a first elastic element; Two L-shaped brackets are installed on both sides of the connecting column; Two rotating shafts are respectively installed on one side of the two L-shaped frames, and both rotating shafts are rotatably connected to the L-shaped frames; A ball bearing is disposed between the two L-shaped frames, and both sides of the ball bearing are connected to one end of the two rotating shafts.

[0008] The technical effect of adopting the above-mentioned further solution is that the connecting column can be elastically extended and retracted through the first elastic element, and the ball bearing can be driven to rotate in conjunction with the rotating shaft, forming a flexible clamping and guiding for the copper wire. This not only reduces friction and avoids surface scratches, but also can be adapted to copper wires of different diameters to prevent transmission deviation and deformation.

[0009] In a preferred embodiment, the flexible clamping assembly further includes: A groove is formed on the side of the connecting post near the ball, and the groove is adapted to the ball.

[0010] The technical effect of adopting the above-mentioned further solution is that the added groove and the ball bearing can accurately limit the ball bearing, prevent it from deviating during operation, ensure the stability of the copper wire transmission path, and further improve the reliability of the clamping guide.

[0011] In a preferred embodiment, the snap-fit ​​assembly includes: The mounting groove is provided on the side of the first connecting pipe near the second connecting pipe; The mounting plate is fixedly installed on the side of the mounting groove away from the second connecting pipe; Two semi-circular plates are symmetrically hinged to the mounting plate on the side near the second connecting pipe; A fixing block is fixedly installed on one side of the second connecting pipe; A circular plate is fixedly installed on one side of the fixing block, and the circular plate is adapted to the two semi-circular plates.

[0012] The technical effect of adopting the above-mentioned further solution is that by adapting the semi-arc plate to the circular plate, the first and second connecting pipes can be quickly docked and positioned. The structure is simple and the positioning is accurate, laying the foundation for a stable connection in the future.

[0013] In a preferred embodiment, the snap-fit ​​assembly further includes: Two connecting blocks are respectively installed on one side of the two semi-arc plates; Two second elastic elements are respectively installed between the two connecting blocks and the mounting plate.

[0014] The technical effect of adopting the above-mentioned further solution is that the semi-arc plate tightly clamps the circular plate through elastic force, which improves the clamping stability, facilitates disassembly and assembly, and reduces the difficulty of pipeline maintenance.

[0015] As a preferred embodiment, the cable copper wire tube annealing production line further includes: The support frame is fixedly installed at the bottom of the heating tube of the annealing furnace.

[0016] The technical effect of adopting the above-mentioned further solutions is that it can provide stable bottom support, prevent the equipment from shifting due to its own weight or vibration during operation, and ensure the overall structural stability.

[0017] In a preferred embodiment, the cable copper wire tube annealing production line further includes: Two mounting brackets are disposed on one side of the annealing furnace heating tube, and both mounting brackets are connected to one side of the annealing furnace heating tube and the support frame.

[0018] The technical effect of adopting the above-mentioned further solution is that the two mounting brackets connect the heating tube of the annealing furnace to the support frame, forming a laterally reinforced support structure, which further improves the vibration resistance of the equipment and ensures the accuracy of copper wire transmission.

[0019] In a preferred embodiment, the cable copper wire tube annealing production line further includes: The tension adjustment assembly is located on the side of the mounting bracket away from the heating tube of the annealing furnace.

[0020] The technical effect of adopting the above-mentioned further solution is that the transmission tension can be flexibly adjusted according to the specifications of the copper wire, and with the help of flexible clamping components, the adaptability of copper wires of various specifications can be improved, ensuring stable transmission.

[0021] As a preferred embodiment, a method for annealing copper wire tubes in cables includes the following steps: S1. Threading and tension pre-adjustment: Thread multiple strands of copper wire to be annealed through the tension adjustment component (4) respectively, and adjust the tension adjustment component (4) according to the diameter of the copper wire to set the initial transmission tension; then, thread each strand of copper wire through the corresponding second connecting pipe (6) and first connecting pipe (5) in sequence, and introduce it into the annealing furnace heating pipe (1); S2, Pipe connection: The second connecting pipe (6) and the corresponding first connecting pipe (5) are quickly connected and locked through the snap-fit ​​assembly to ensure a sealed connection; S3, Protective atmosphere annealing: A protective gas is introduced into the heating tube (1) of the annealing furnace, and then the heating program is started so that the copper wire undergoes heating, heat preservation and controllable cooling in the protective atmosphere in sequence to complete recrystallization annealing; S4. Take-up: The annealed copper wire is drawn out from the end of the production line and wound up.

[0022] In a preferred embodiment, in step S3, the protective gas is nitrogen, water vapor or a nitrogen-hydrogen mixture, and the heating temperature of the annealing furnace heating tube (1) is 400-650°C.

[0023] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. This invention, by setting multiple sets of rectangularly distributed flexible clamping components in the inner cavity of the second connecting tube, utilizes the first elastic element to drive the connecting column to achieve elastic extension and contraction. Combined with the rotational guide structure composed of L-shaped frame, rotating shaft and ball bearings, it can form flexible clamping and precise guidance for the copper wire in transmission. The ball bearings rotate synchronously with the copper wire, which can greatly reduce frictional resistance and avoid scratches on the surface of the copper wire. The buffering effect of the first elastic element can adapt to the transmission requirements of copper wires of different diameters, preventing the copper wire from deviating or being stretched and deformed. At the same time, the equidistant through-hole design of the five first connecting tubes and the second connecting tube, combined with the stable connection effect brought by the snap-fit ​​components, ensures that multiple copper wires can enter the heating tube of the annealing furnace synchronously and smoothly, effectively avoiding the problem of insufficient local annealing caused by transmission deviation, and significantly improving the consistency of copper wire annealing quality and surface smoothness.

[0024] 2. In this invention, the first connecting pipe and the second connecting pipe are detachably connected through a ring-shaped clamping assembly. The second elastic element pulls the semi-arc plate to form a stable clamping connection with the circular plate, allowing assembly and disassembly to be completed without the need for additional fastening tools. This greatly improves the convenience of pipeline maintenance and replacement. In addition, the combined design of the support frame and the double-sided mounting frame provides stable support and lateral reinforcement for the heating pipe of the annealing furnace, effectively preventing vibration during equipment operation from affecting the transmission accuracy. The independent setting of the tension adjustment component allows for flexible adjustment of the transmission tension according to the specifications of the copper wire. Combined with the adaptability of the flexible clamping component, the device can be compatible with the annealing processing requirements of copper wires of various diameters, reducing the cost of equipment replacement or modification and improving the versatility and practicality of the production line. Attached Figure Description

[0025] Figure 1 This is a perspective view of an embodiment of this application; Figure 2 This is a perspective view of an embodiment of this application; Figure 3 This is a perspective cross-sectional view of the flexible clamping assembly according to an embodiment of this application; Figure 4 This is a perspective cross-sectional view of the first connecting pipe and the second connecting pipe in the embodiments of this application.

[0026] Legend: 1. Annealing furnace heating tube; 2. Support frame; 3. Mounting frame; 4. Tension adjustment assembly; 5. First connecting pipe; 6. Second connecting pipe; 7. First elastic element; 8. Connecting cylinder; 9. Connecting column; 10. Ball bearing; 11. L-shaped frame; 12. Rotating shaft; 13. Fixing block; 14. Circular plate; 15. Connecting block; 16. Second elastic element; 17. Mounting plate; 18. Semi-arc plate; 19. Mounting groove; 20. Groove. Detailed Implementation

[0027] 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.

[0028] Example 1: Please see Figures 1-4 This embodiment provides a cable copper wire tube annealing production line and annealing method, the specific idea of ​​which is as follows: A cable copper wire tube annealing production line includes an annealing furnace heating tube 1. The cable copper wire tube annealing production line also includes: five first connecting tubes 5 are provided. The five first connecting tubes 5 are evenly distributed and assembled at the same port of the annealing furnace heating tube 1, and the internal channel of each first connecting tube 5 forms a through structure with the inner cavity of the annealing furnace heating tube 1.

[0029] The second connecting pipe 6 is provided in a one-to-one correspondence with the first connecting pipe 5. Each second connecting pipe 6 is installed at the end of the corresponding first connecting pipe 5 away from the heating pipe 1 of the annealing furnace, and the internal channel of the second connecting pipe 6 is in communication with the internal channel of the corresponding first connecting pipe 5.

[0030] In addition, multiple flexible clamping components are provided, which are embedded in the inner cavity of each second connecting tube 6 in a three-group distribution, and the flexible clamping components in the same group are arranged in a rectangular array.

[0031] As examples, in this embodiment, the flexible clamping assembly includes: a connecting cylinder 8 fixedly embedded in the inner cavity sidewall of the second connecting tube 6, and an elastic element internally assembled inside the cavity of the connecting cylinder 8.

[0032] One end of the connecting column 9 extends into the cavity of the connecting cylinder 8 and is connected to the first elastic element 7, so that the connecting column 9 and the connecting cylinder 8 form an elastic telescopic fit structure through the first elastic element 7.

[0033] In addition, two L-shaped frames 11 are symmetrically fixed on both sides of the end of the connecting column 9 away from the connecting cylinder 8, and two rotating shafts 12 are respectively installed on the corresponding sides of the two L-shaped frames 11, and the rotating shafts 12 and the L-shaped frames 11 form a rotating engagement.

[0034] The ball bearing 10 is clamped between two L-shaped frames 11, and the two ends of the ball bearing 10 are fixedly connected to the ends of two rotating shafts 12 respectively, so that the ball bearing 10 rotates synchronously with the rotating shafts 12.

[0035] In addition, the groove 20 is formed on the side wall of the connecting post 9 near the ball 10. The groove 20 is matched with the shape of the ball 10 and is used to provide limiting support for the ball 10.

[0036] Example 2: Please see Figures 1-4 Based on Example 1, this example provides a cable copper wire tube annealing production line, the specific concept of which is as follows: The cable copper wire tube annealing production line also includes: a support frame 2 fixedly installed at the bottom of the annealing furnace heating tube 1 to provide bottom support for the annealing furnace heating tube 1.

[0037] There are two mounting brackets 3. Both mounting brackets 3 are assembled on the same side of the annealing furnace heating tube 1. The two ends of each mounting bracket 3 are fixedly connected to the side wall of the annealing furnace heating tube 1 and the side of the support frame 2, respectively, so as to realize the lateral reinforcement and support of the annealing furnace heating tube 1.

[0038] In addition, the tension adjustment component 4 is mounted on the side of the mounting frame 3 away from the heating tube 1 of the annealing furnace, and is used to realize tension control during the copper wire transmission process.

[0039] In addition, multiple snap-fit ​​components are provided, each of which is embedded in the mating end face of the first connecting pipe 5 and the second connecting pipe 6, and is evenly distributed in a ring along the circumference of the mating end face, so as to realize the detachable fixed connection between the first connecting pipe 5 and the second connecting pipe 6.

[0040] As examples, in this embodiment, the snap-fit ​​assembly includes: a mounting groove 19 formed on the mating end face of the first connecting pipe 5 facing the second connecting pipe 6.

[0041] The mounting plate 17 is fixedly fitted to the bottom wall of the mounting groove 19.

[0042] In addition, two semi-circular plates 18 are symmetrically arranged on the side of the mounting plate 17 facing the second connecting pipe 6, and one end of each semi-circular plate 18 is rotatably connected to the mounting plate 17 through a hinge.

[0043] In addition, the fixing block 13 is fixedly protruding on the mating end face of the second connecting pipe 6 facing the first connecting pipe 5, and the circular plate 14 is fixedly assembled on the end of the fixing block 13 away from the second connecting pipe 6. The outer diameter of the circular plate 14 is adapted to the inner diameter of the annular structure formed after the two semi-arc plates 18 are closed, so that the circular plate 14 can be snapped between the two semi-arc plates 18.

[0044] Two connecting blocks 15 are fixedly mounted on the inner sidewalls of the two semi-arc plates 18, and two second elastic members 16 are connected between the two connecting blocks 15 and the mounting plate 17, respectively, to provide the semi-arc plates 18 with an elastic clamping force toward the circular plate 14.

[0045] Working principle: In use, the tension adjustment component 4 on the side of the mounting bracket 3 away from the annealing furnace heating tube 1 is first pre-adjusted to provide appropriate tension for copper wire transmission. After the tension of the annealed copper wire is adjusted by the tension adjustment component 4, it enters the five first connecting tubes 5 that are equidistant from one end of the annealing furnace heating tube 1 and are internally connected. The first connecting tubes 5 and the second connecting tubes 6 away from the annealing furnace heating tube 1 are stably connected by a ring-shaped snap-fit ​​component. In the snap-fit ​​component, the mounting plate 17 in the mounting groove 19 on the side of the first connecting tube 5 near the second connecting tube 6 is pulled by the second elastic element 16 to the connecting block 15 on one side of the semi-arc plate 18, so that the two symmetrically hinged semi-arc plates 18 form a stable snap-fit ​​with the circular plate 14 on the fixing block 13 on one side of the second connecting tube 6, ensuring that the connection between the two tubes does not loosen during the copper wire transmission process.

[0046] After the copper wire enters the second connecting tube 6, three sets of flexible clamping components arranged in a rectangular shape inside the tube come into play. The connecting cylinder 8 is fixed to the inner wall of the second connecting tube 6. The first elastic element 7 inside the cylinder drives the connecting column 9 to expand and contract elastically. The L-shaped frames 11 on both sides of the connecting column 9 are connected to the ball bearings 10 through the rotating shaft 12. The ball bearings 10 are adapted to the grooves 20 on the connecting column 9. When the copper wire passes between the two L-shaped frames 11, the ball bearings 10 rotate synchronously with the copper wire. This forms a flexible clamping guide for the copper wire, preventing the copper wire from deviating or being scratched on the surface. It can also adapt to the transmission requirements of copper wires of different diameters through the buffering effect of the first elastic element 7. Finally, after being stably guided by the flexible clamping components, the copper wire enters the annealing furnace heating tube 1 through the second connecting tube 6 and the first connecting tube 5 to complete the annealing treatment. Throughout the process, all structures work together to ensure smooth copper wire transmission and stable annealing quality.

[0047] This invention also discloses a method for annealing copper wire tubes in cables, comprising the following steps: S1. Threading and tension pre-adjustment: Thread multiple strands of copper wire to be annealed through the tension adjustment component 4, and adjust the tension adjustment component 4 according to the diameter of the copper wire to set the initial transmission tension; then, thread each strand of copper wire through the corresponding second connecting pipe 6 and first connecting pipe 5 in sequence, and introduce it into the heating pipe 1 of the annealing furnace.

[0048] Specifically, based on the diameter of the copper wire to be processed, the appropriate transmission tension is pre-adjusted using the tension adjustment component 4 on the equipment. Multiple strands, such as five strands, of cold-drawn hardened copper wire are passed through the corresponding second connecting pipe 6 and first connecting pipe 5, and finally enter the heating pipe 1 of the annealing furnace. During the wire threading process, the flexible clamping component, especially the ball bearings 10, automatically adapts to the diameter of the copper wire under the buffer of the first elastic element 7, providing low-friction guidance and preventing surface scratches.

[0049] S2. Pipeline connection: The second connecting pipe (6) and the corresponding first connecting pipe (5) are quickly connected and locked through the snap-fit ​​assembly to ensure that the connection is sealed.

[0050] Specifically, ensure that the first connecting pipe 5 and the second connecting pipe 6 are securely connected via the snap-fit ​​assembly. Utilize the elastic force of the second elastic element 16 to tightly snap the semi-arc plate 18 into the circular plate 14, achieving a rapid sealing connection and ensuring that the annealing atmosphere does not leak.

[0051] S3. Protective atmosphere annealing treatment: a protective gas is introduced into the heating tube (1) of the annealing furnace, and then the heating program is started so that the copper wire undergoes heating, heat preservation and controllable cooling processes in the protective atmosphere to complete the recrystallization annealing.

[0052] Specifically, during the heating stage: a protective gas, such as nitrogen, water vapor, or a nitrogen-hydrogen mixture, is introduced into the heating tube 1 of the annealing furnace, and air is vented out. Then, the heating system is started, and the temperature is increased according to the preset program.

[0053] Heat preservation stage: Raise the temperature to above the recrystallization temperature of copper wire, which is 400-650℃, and maintain it at this temperature for a period of time. The heat preservation time is determined according to the diameter of copper wire and the length of furnace tube, so that the internal lattice of copper wire can be fully reorganized and the processing stress can be eliminated.

[0054] Cooling stage: After the heat preservation is completed, the copper wire is passed through the cooling section of the heating tube at a uniform speed in a protective atmosphere, or enters the subsequent cooling device for controlled cooling to prevent secondary oxidation and obtain ideal mechanical properties.

[0055] S4. Take-up: The annealed copper wire is drawn out from the end of the production line and wound up.

[0056] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A copper wire tube type annealing production line for cables, comprising an annealing furnace heating tube (1), characterized in that, The cable copper wire tube type annealing production line further comprises: Five first connecting pipes (5) are installed at one end of the annealing furnace heating pipe (1), five first connecting pipes (5) are equidistantly distributed, and the interiors of the five first connecting pipes (5) are communicated with the annealing furnace heating pipe (1); Five second connecting pipes (6) are arranged at the end, away from the annealing furnace heating pipe (1), of the five first connecting pipes (5), and the interiors of the five second connecting pipes (6) are communicated with the first connecting pipes (5); A plurality of flexible clamping assemblies are arranged in the inner cavities of the second connecting pipes (6) in three groups, and the plurality of flexible clamping assemblies are arranged in a rectangular distribution; A plurality of clamping assemblies are arranged on the contact surfaces between the second connecting pipes (6) and the first connecting pipes (5), and the plurality of clamping assemblies are arranged in an annular distribution.

2. A copper wire tube annealing line for cables according to claim 1, characterized in that, The flexible clamping assembly comprises: A connecting cylinder (8) is fixedly installed on the side wall of the inner cavity of the second connecting pipe (6); A first elastic member (7) is arranged in the inner cavity of the connecting cylinder (8); A connecting column (9) is arranged at one end of the connecting cylinder (8), and the connecting column (9) is elastically connected with the connecting cylinder (8) through the first elastic member (7); Two L-shaped frames (11) are installed on both sides of the connecting column (9); Two rotating shafts (12) are respectively installed on one side of the two L-shaped frames (11), and the two rotating shafts (12) are rotatably connected with the L-shaped frames (11); A ball (10) is arranged between the two L-shaped frames (11), and the two sides of the ball (10) are connected with one end of the two rotating shafts (12).

3. A copper wire tube annealing line for cables according to claim 2, characterized in that, The flexible clamping assembly further comprises: A groove (20) is arranged on one side of the connecting column (9) close to the ball (10), and the groove (20) is matched with the ball (10).

4. A copper wire tube annealing line for cables according to claim 1, characterized in that, The clamping assembly comprises: An installation groove (19) is arranged on one side of the first connecting pipe (5) close to the second connecting pipe (6); An installation plate (17) is fixedly installed on one side of the installation groove (19) away from the second connecting pipe (6); Two semicircular plates (18) are symmetrically hinged on one side of the installation plate (17) close to the second connecting pipe (6); A fixed block (13) is fixedly installed on one side of the second connecting pipe (6); A circular plate (14) is fixedly installed on one side of the fixed block (13), and the circular plate (14) is matched with the two semicircular plates (18).

5. A copper wire tube annealing line for cables according to claim 4, characterized in that, The clamping assembly further comprises: Two connecting blocks (15) are respectively installed on one side of the two semicircular plates (18); Two second elastic members (16) are respectively arranged between the two connecting blocks (15) and the installation plate (17).

6. A copper wire tube annealing line for cables according to claim 1, characterized in that, The cable copper wire tube type annealing production line further comprises: A support frame (2) is fixedly installed at the bottom of the annealing furnace heating pipe (1).

7. A copper wire tube annealing line for cables according to claim 6, characterized in that, The cable copper wire tube type annealing production line further comprises: Two installation frames (3) are arranged on one side of the annealing furnace heating pipe (1), and the two installation frames (3) are connected with one side of the annealing furnace heating pipe (1) and the support frame (2).

8. A copper wire tube annealing line for cables according to claim 7, characterized in that, The cable copper wire tube type annealing production line further comprises: A tension adjusting assembly (4) is arranged on the side of the mounting rack (3) away from the annealing furnace heating pipe (1).

9. A method for annealing copper wire of a cable by using the production line for annealing copper wire of a cable according to any one of claims 6 to 8, characterized in that, The method comprises the following steps: S1, threading and tension pre-adjusting: multiple strands of copper wires to be annealed are threaded through the tension adjusting assembly (4) respectively, and the tension adjusting assembly (4) is adjusted according to the diameters of the copper wires to set initial transmission tension; Subsequently, the copper wires are sequentially threaded through corresponding second connecting pipes (6) and first connecting pipes (5) and introduced into the annealing furnace heating pipe (1); S2, pipeline connection: the second connecting pipe (6) and the corresponding first connecting pipe (5) are quickly connected and locked through the clamping assembly, and the connection is ensured to be sealed; S3, protective atmosphere annealing treatment: protective gas is introduced into the annealing furnace heating pipe (1), and then a heating program is started, so that the copper wires sequentially undergo heating, holding and controllable cooling processes in a protective atmosphere to complete recrystallization annealing; S4, take-up: the annealed copper wires are drawn out from the end of the production line and wound up.

10. A method of annealing copper wire in a tube of a cable as defined in claim 9, characterized in that In the step S3, the protective gas is nitrogen, water vapor or nitrogen-hydrogen mixed gas, and the heating temperature of the annealing furnace heating pipe (1) is 400-650°C.

Images