A device for repairing local defects of copper rods used for wire drawing

Abstract

The present invention relates to the technical field of repair devices, and in particular to a local defect repair device for a copper rod for wire drawing, comprising two clamping units relatively distributed along the length direction of the copper rod, an extrusion unit located between the two clamping units, and a heating unit used in conjunction with the extrusion unit; the two clamping units are used to clamp parts of the copper rod on both sides of a defective position on the copper rod, and the two clamping units are close to each other and extrude the defective position of the copper rod between them; by forcing surplus metal to flow to the defective area, the material of the copper rod itself can be used to achieve compensation, without the need to use other external materials. The operation method is simple, and the device is suitable for repairing complex defects such as deep scratches and local defects. The device can also achieve the purpose of shaping while repairing the defect, so that the defective position is restored to a flat state.

Description

Technical Field

[0001] The present invention relates to the technical field of repair devices, in particular to a device for repairing local defects of a copper rod used for wire drawing. Background Art

[0002] Copper rods are key raw materials for power transmission, electronic components, and precision cable manufacturing. Their surface quality directly affects the conductivity, mechanical strength, and processing yield of the finished wire drawing products. The wire drawing process requires the copper rods (usually 8-20 mm in diameter) to be gradually reduced in diameter to micron-level fine wires through multiple cold drawing passes. During this process, tiny defects such as scratches, pits, and pores on the surface of the copper rods will be gradually amplified, leading to problems such as broken wires and uneven resistivity. In severe cases, the entire roll of wire will be scrapped, resulting in significant economic losses.

[0003] At present, the repair methods for copper rod surface defects mainly include welding and mechanical grinding. Among them, welding is divided into high-temperature welding and cold welding. High-temperature welding requires the use of welding wire of the same or similar material, and the welding wire is welded to the defect position under argon protection. This requires workers to concentrate highly to control the welding amount. After the welding is completed, it is still necessary to undergo grinding and other treatments to restore the surface flatness of the copper rod. The operation method is cumbersome, and the repair work requires workers to have high work experience. Cold welding requires the use of a repair agent to fill the defects through pressure or chemical bonding. The repair agent in this method, such as epoxy resin containing copper powder, can easily reduce the conductivity of the copper rod, making it difficult for the copper rod to meet the stringent requirements of high-frequency conductors and ultra-fine wires; mechanical grinding is only suitable for superficial defects such as scratches, burrs, and slight unevenness. It cannot repair defects such as deep scratches, local defects, and cracks. Summary of the Invention

[0004] The present invention provides a device for repairing local defects of a copper rod for wire drawing, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A device for repairing local defects of a copper rod for wire drawing, comprising two pinching units relatively distributed along the length direction of the copper rod, an extrusion unit located between the two pinching units, and a heating unit used in conjunction with the extrusion unit;

[0007] The two pinching units are used to clamp parts of the copper rod on both sides of the defective position on the copper rod, and the two pinching units are close to each other and squeeze the defective position of the copper rod between them;

[0008] The extrusion unit includes a plurality of extrusion bodies, which move circumferentially around the copper rod and are used to extrude defective positions on the outer wall of the copper rod;

[0009] The heating unit is used to heat and soften the defective position of the copper rod.

[0010] In some embodiments of the present invention, the distance between the extrusion body and the copper rod is adjustable.

[0011] In some embodiments of the present invention, the extrusion unit also includes an outer cylinder and several movable frames installed on the outer cylinder, the heating unit is arranged on the inner wall of the outer cylinder, the movable frame is connected to the extrusion body, and the movable frame moves along the radial direction of the outer cylinder. When the outer cylinder rotates, it drives the several extrusion bodies to perform circular motion around the outer wall of the copper rod.

[0012] In some embodiments of the present invention, the extrusion body is cylindrical in shape, and the extrusion body rotates on the corresponding movable frame, and the extrusion body performs rolling processing on the outer wall of the copper rod.

[0013] In some embodiments of the present invention, a power structure is provided on the outer cylinder, and the power structure is used to provide power to the plurality of movable frames and enable them to move synchronously.

[0014] In some embodiments of the present invention, the power structure includes an adjustment sleeve mounted on the outer wall of the outer cylinder and a cylinder for providing power for the movement of the adjustment sleeve. Each of the movable frames is provided with two connecting rods parallel to each other, and the connecting rods are rotatably connected to the adjustment sleeve.

[0015] In some embodiments of the present invention, both ends of each extrusion body are set as conical ends, and transmission rings are set on both sides of several of the conical ends. The inner wall of the transmission ring is set as a transmission cone surface, and the transmission cone surface is used in conjunction with the conical end. The transmission ring can move along the axis direction of the outer cylinder.

[0016] In some embodiments of the present invention, support rings are rotatably provided at both ends of the outer cylinder, teeth are provided on the outer wall of the transmission ring, and the teeth on the transmission ring cooperate with the teeth on the support ring, the transmission ring slides through the support ring, and the transmission ring and the support ring are elastically connected by a plurality of elastic bodies;

[0017] The teeth of the transmission ring are provided with a power gear for providing power for the rotation of the transmission ring.

[0018] In some embodiments of the present invention, the repair device further includes a frame, the outer cylinder is rotatably mounted on the frame, each of the pinching units is disposed on the frame, and a power motor is disposed on the frame for providing power for the rotation of the outer cylinder.

[0019] In some embodiments of the present invention, the clamping unit includes two clamping plates relatively distributed on both sides of the copper rod and two side beams relatively distributed on both sides of the clamping plates, the ends of the two clamping plates are slidably mounted on the corresponding side beams, and the two clamping plates are connected by a first cylinder;

[0020] The side beams are slidably mounted on the frame along the length direction of the copper rod, and the frame is provided with a second cylinder for providing power for the movement of the side beams. A synchronization structure is provided in each of the side beams, and the synchronization structure is used to make the two splints move synchronously relative to each other.

[0021] The technical solution of the present invention can achieve the following technical effects:

[0022] By forcing the excess metal to flow toward the defective area, the material of the copper rod itself can be used to achieve compensation, without the need for other external materials. The operation is simple and suitable for repairing complex defects such as deep scratches and localized defects. It can also achieve the purpose of shaping while repairing the defects, restoring the defective position to a flat state. At the same time, since the repair material used in this repair method is the copper rod itself, it has little impact on the conductivity and quality of the copper rod itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle extrusion unit and part of the frame;

[0026] Figure 3 is a schematic structural diagram of an extrusion unit in an embodiment of the present invention;

[0027] Figure 4 This is a schematic cross-sectional view of the extrusion unit in an embodiment of the present invention;

[0028] Figure 5 This is a schematic structural diagram of a transmission ring in an embodiment of the present invention;

[0029] Figure 6 2 is a schematic structural diagram of a pinching unit in an embodiment of the present invention;

[0030] Figure 72. It is a schematic diagram of the explosion structure of the extrusion unit in an embodiment of the present invention;

[0031] Figure 8 yes Figure 7 Schematic diagram of the structure of the extrusion body.

[0032] Reference numerals:

[0033] 100, copper rod;

[0034] 200, pinching unit; 201, clamping plate; 202, first cylinder; 203, side beam; 204, second cylinder; 205, rotating column; 206, thread groove;

[0035] 300, extrusion unit; 301, extrusion body; 302, outer cylinder; 303, movable frame; 304, adjustment sleeve; 305, connecting rod; 306, oil cylinder; 307, cone end; 308, transmission ring; 309, support ring; 310, elastic body; 311, power gear;

[0036] 400, heating unit;

[0037] 500, frame; 501, power motor. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] like Figures 1 to 8 As shown, a local defect repair device for a copper rod for wire drawing of the present invention comprises two pinching units 200 relatively distributed along the length direction of the copper rod 100, an extrusion unit 300 located between the two pinching units 200, and a heating unit 400 used in conjunction with the extrusion unit 300;

[0041] The two pinching units 200 are used to clamp portions of the copper rod 100 on both sides of the defective position on the copper rod 100, and the two pinching units 200 approach each other and squeeze the defective position of the copper rod 100 between them;

[0042] The extrusion unit 300 includes a plurality of extrusion bodies 301, which move circumferentially around the copper rod 100 and are used to extrude defective positions on the outer wall of the copper rod 100;

[0043] The heating unit 400 is used to heat and soften the defective position of the copper rod 100 .

[0044] In the present invention, the copper rod 100 is conveyed through the two pinching units 200 and the extrusion unit 300. When a defect is found at a local position on the copper rod 100, the copper rod 100 can be stopped from being conveyed, and the repair device can repair the defective position on the copper rod 100. Alternatively, the repair device can be moved synchronously with the copper rod 100, so that the repair device and the defective position are relatively stationary, thereby repairing the defective position. The device can be applied to the working state of continuous production and coherent processing of the copper rod 100, and of course it can also be applied to the repair work of defective positions on small sections of the copper rod 100.

[0045] The two pinching units 200 are respectively arranged on both sides of the extrusion unit 300, and the two pinching units 200 and the extrusion unit 300 are arranged in a straight line along the conveying direction of the copper rod 100. The two pinching units 200 can clamp part of the copper rod 100 on both sides of the extrusion unit 300, and when the two pinching units 200 are synchronously approaching the extrusion unit 300, the two pinching units 200 can squeeze part of the copper rod 100 therebetween, so that the length of the part of the copper rod 100 between the two pinching units 200 is reduced, which can force the excess metal around the defect to move to the defect area to compensate for the material loss. The pinching units 200 can use high-temperature resistant clamping claws, pressure plates and other structures to clamp the copper rod 100, or can use a number of arc-shaped plates matching the diameter of the copper rod 100 to clamp and fix the copper rod 100. The movement of the pinching units 200 can be powered by conventional cylinders, push structures and other structures.

[0046] The heating unit 400 is mainly used to heat and soften the defective position of the copper rod 100 to facilitate the flow of metal and fill the defective position. The heating unit 400 can use electromagnetic induction heating or other conventional heating methods. When using electromagnetic induction heating, in order to prevent the extrusion body 301 in the extrusion unit 300 from heating up due to electromagnetic induction, the extrusion body 301 can be made of non-metallic, high-temperature resistant materials. This can protect the extrusion body 301 and reduce energy loss. The material for making the extrusion body 301 can be ceramic, carbon-based material, high-performance polymer, etc.

[0047] The extrusion unit 300 is mainly used to extrude the defective position after heating, and cooperates with the two pinching units 200 to extrude the excess metal toward the defective position, so that the defective position can be replenished with material, the defective position is restored to a flat state, and the copper rod 100 is repaired. At the same time, the extrusion of the extrusion unit 300 can make the metal at the defective position more compact, avoid defects such as residual pores inside the copper rod 100, and improve the quality of defect repair. The extrusion unit 300 extrudes the defective position of the copper rod 100 mainly through a number of extrusion bodies 301. When the extrusion body 301 moves circumferentially around the copper rod 100, the extrusion body 301 can fully extrude the circumferential direction of the defective position, so that the metal material is fully and evenly distributed in the circumferential direction of the copper rod 100 where the defective position is located. While repairing the defect, the small section of the copper rod 100 can maintain a uniform and flat state as a whole, thereby achieving both repair work and shaping work.

[0048] In actual use, the extrusion body 301 can be a columnar or plate body with grooves. When the extrusion body 301 is a plate body, the grooves on it can be used to directly press the defective position of the copper rod 100; when the extrusion body 301 is columnar, the axis of the extrusion body 301 can be parallel to the axis of the copper rod 100. At this time, the extrusion body 301 and the copper rod 100 are in a linear contact state. In this way, when the extrusion body 301 moves circumferentially around the copper rod 100, the extrusion body 301 can fully contact the copper rod 100 in the circumferential direction, achieving a full extrusion working effect. When the extrusion body 301 is cylindrical, the axis of the extrusion body 301 can be parallel to the axis of the copper rod 100. At this time, the extrusion body 301 and the copper rod 100 are in a linear contact state. In this way, when the extrusion body 301 moves circumferentially around the copper rod 100, the extrusion body 301 can fully contact the copper rod 100 in the circumferential direction, achieving a full extrusion working effect. When the axis of 1 is relatively inclined with the axis of the copper rod 100, the extrusion body 301 is in point contact with the copper rod 100. At this time, the pressure of the extrusion body 301 on the copper rod 100 is relatively large. When the extrusion body 301 moves circumferentially around the copper rod 100, the extrusion body 301 in the inclined state can more easily deform the copper rod 100 locally, so that the defective position is deformed and repaired. At the same time, since the force exerted by the extrusion body 301 on the copper rod 100 is inclined, the movement of the extrusion body 301 can cause a small area of twisting at the defective position of the copper rod 100, which can facilitate the closure of the crack at the defective position.

[0049] When repairing defects on the copper rod 100, the heating temperature can be controlled between 400 and 600 degrees Celsius to balance plasticity and oxidation risks, and local overheating that causes grain coarsening or melting needs to be avoided, requiring infrared temperature measurement or thermocouple monitoring.

[0050] Optimizing the above implementation, the distance between the extrusion body 301 and the copper rod 100 can be adjusted;

[0051] Since the copper rod 100 needs to pass through the space between several extrusion bodies 301, it is necessary to enlarge the space between the several extrusion bodies 301 at the beginning. When repairing the defect, the extrusion body 301 is moved toward the copper rod 100. Therefore, it is necessary to make the distance between the extrusion body 301 and the copper rod 100 adjustable, and this method can enable the extrusion body 301 to repair defects of copper rods 100 with different diameters. It should be pointed out that the specific moving power of the extrusion body 301 can be provided by conventional structures such as cylinders and pushing structures.

[0052] Optimized on the above implementation, such as Figure 4 As shown, the extrusion unit 300 also includes an outer cylinder 302 and a plurality of movable frames 303 mounted on the outer cylinder 302. The heating unit 400 is arranged on the inner wall of the outer cylinder 302. The movable frames 303 are connected to the extrusion bodies 301 and move along the radial direction of the outer cylinder 302. When the outer cylinder 302 rotates, it drives the plurality of extrusion bodies 301 to perform a circular motion around the outer wall of the copper rod 100.

[0053] In the present invention, the extrusion body 301 is located inside the outer cylinder 302, and the movable frame 303 can slide through the outer cylinder 302 and connect to the extrusion body 301. Alternatively, the movable frame 303 can be slidably mounted on the end of the outer cylinder 302 or at other locations. As long as the movable frame 303 and the extrusion body 301 can move in the radial direction of the outer cylinder 302, such as Figure 7 When the handle 302 is tightened, the movable frame 303 is tightened to the screw thread 310 on the support 301, and the movable frame 303 is tightened to the screw thread 310 on the support 301.

[0054] In some embodiments, the movement mode of the outer cylinder 302 can also be a simple rotation mode, that is, the outer cylinder 302 rotates a specified angle, the extrusion body 301 approaches the copper rod 100 and extrudes it, and then the extrusion body 301 moves away from the copper rod 100. When the outer cylinder 302 rotates a specified angle again, the extrusion body 301 extrudes the copper rod 100 again, thereby repairing the defects on the copper rod 100. When using this method, if the extrusion body 301 is a cylinder, the shape of the copper rod 100 after extrusion is a polygon. If the extrusion body 301 is a plate with grooves, the shape of the copper rod 100 after extrusion can be cylindrical. In actual use, different processing methods can be selected according to different processing requirements and the cross-sectional shape of the copper rod 100.

[0055] Optimized on the above implementation, such as Figure 4 As shown, the extrusion body 301 is cylindrical in shape, and the extrusion body 301 rotates on the corresponding moving frame 303 , and the extrusion body 301 performs rolling processing on the outer wall of the copper rod 100 .

[0056] The specific connection method between the extrusion body 301 and the movable frame 303 can be achieved by a bearing, a connecting shaft or the like, or by providing a plurality of circular grooves on the outer wall of the extrusion body 301 so that the end of the movable frame 303 is mounted in the circular grooves. Of course, when this method is adopted, conventional structures such as bearings can also be configured. Since the connection method can adopt a variety of conventional methods, they will not be described in detail here.

[0057] Since the extrusion body 301 can rotate on the movable frame 303, when the outer cylinder 302 moves around the copper rod 100, the extrusion body 301 can roll the outer wall of the copper rod 100, thereby avoiding friction between the extrusion body 301 and the copper rod 100 and affecting the surface flatness of the copper rod 100, thereby improving the shaping quality of the copper rod 100;

[0058] It should be pointed out that when the extrusion body 301 rolls the copper rod 100, the extrusion body 301 can roll actively or be driven to roll by the friction force of the outer wall of the copper rod 100. When the extrusion body 301 rolls actively, the outer wall of the extrusion body 301 and the outer wall of the copper rod 100 are relatively stationary, and no shear stress is generated between them. Therefore, the surface of the copper rod 100 processed in this way is relatively smooth. When it is fixed by the friction of the outer wall of the copper rod 100, there will be a friction force between the copper rod 100 and the extrusion body 301. Although this force is smaller than the sliding friction force between the extrusion body 301 and the copper rod 100, it will still have a certain impact on the appearance of the copper rod 100. In some cases where low processing precision requirements are required, this method can be used.

[0059] When the multiple extrusion bodies 301 extrude the copper rod 100, the extrusion forces of the multiple extrusion bodies 301 on the copper rod 100 need to be balanced, otherwise the copper rod 100 will be deformed from a regular cylindrical shape or other shapes to an irregular shape such as a flat shape. Therefore, it is necessary to make the multiple extrusion bodies 301 move synchronously. Specifically, a power structure is provided on the outer cylinder 302, and the power structure is used to provide power to the multiple mobile frames 303 and make them move synchronously; the synchronous movement of the multiple mobile frames 303 will drive the multiple extrusion bodies 301 to also achieve synchronous movement; it should be pointed out that the synchronous movement of the multiple extrusion bodies 301 can also achieve the centering positioning effect of the axis of the copper rod 100, so that the axis of the copper rod 100 coincides with the axis of the outer cylinder 302, so that the distance between different positions on the heating unit 400 and the copper rod 100 is consistent, so that the heating unit 400 can achieve a uniform heating effect on the copper rod 100.

[0060] Optimized to the above implementation, such as Figure 3 As shown, the power structure includes an adjustment sleeve 304 mounted on the outer wall of the outer cylinder 302 and a cylinder 306 for providing power for the movement of the adjustment sleeve 304. Each movable frame 303 is provided with two parallel connecting rods 305, which are rotatably connected to the adjustment sleeve 304.

[0061] In the present invention, the adjusting sleeve 304 can be connected to the plurality of movable frames 303 through a plurality of connecting rods 305, so that when the adjusting sleeve 304 moves, it will drive the plurality of movable frames 303 to move synchronously, thereby synchronously adjusting the positions of the plurality of extrusion bodies 301; the setting of two mutually parallel connecting rods 305 on the movable frame 303 can conveniently guide the movable frame 303, avoid the force transmitted to the movable frame 303 by the adjusting sleeve 304 causing the movable frame 303 to tilt, and ensure that the movable frame 303 can perform translational movement, and the oil cylinder 306 is mainly used to provide moving power for the adjusting sleeve 304, and the specific number of the oil cylinder 306 can be determined according to actual conditions.

[0062] Optimized to the above implementation, such as Figure 5 As shown, both ends of each extrusion body 301 are set as conical ends 307, and transmission rings 308 are set on both sides of several conical ends 307. The inner wall of the transmission ring 308 is set as a transmission cone surface. The transmission cone surface is used in conjunction with the conical end 307, and the transmission ring 308 can move along the axial direction of the outer cylinder 302.

[0063] In the present invention, the transmission ring 308 can directly drive the extrusion body 301 to rotate through the tapered end 307, thereby realizing the active rotational motion of the extrusion body 301. No shear stress will be generated between the extrusion body 301 and the copper rod 100. The extrusion body 301 only has a rolling effect on the copper rod 100, thereby improving the surface flatness of the copper rod 100. Since the distance between the extrusion body 301 and the copper rod 100 is adjustable, when the extrusion body 301 moves, the transmission ring 308 needs to move along the axial direction of the outer cylinder 302 to ensure that the transmission cone surface of the tapered end 307 and the transmission ring 308 maintains a transmission state, thereby facilitating the transmission ring 308 to transmit power to the extrusion body 301 at any position.

[0064] Optimized on the above implementation, such as Figure 2 and Figure 5 As shown, support rings 309 are rotatably provided at both ends of the outer cylinder 302, and teeth are provided on the outer wall of the transmission ring 308, and the teeth on the transmission ring 308 cooperate with the teeth on the support ring 309. The transmission ring 308 slides through the support ring 309, and the transmission ring 308 and the support ring 309 are elastically connected by a plurality of elastic bodies 310;

[0065] The teeth of the transmission ring 308 are provided with a power gear 311 for providing power for the rotation of the transmission ring 308 .

[0066] It can be seen that the support ring 309 is mainly used to provide support for the support ring 309. When the transmission ring 308 rotates, it will drive the support ring 309 to rotate synchronously. When the transmission ring 308 moves along the axial direction of the outer cylinder 302, the transmission ring 308 will slide on the support ring 309. The setting of the elastic body 310 can provide an elastic force for the transmission ring 308, so that the transmission cone surface in the transmission ring 308 always maintains a transmission contact state with the cone end 307. In this way, it is only necessary to use the power gear 311 to transmit power to the transmission ring 308 to achieve the purpose of providing power to the extrusion body 301 at any position; when the transmission ring 308 moves, it and the power gear 311 will produce relative sliding, and the power of the power gear 311 is provided by the motor.

[0067] Optimized on the above implementation, such as Figure 1 As shown, the repair device also includes a frame 500, the outer cylinder 302 is rotatably mounted on the frame 500, each clamping unit 200 is arranged on the frame 500, and a power motor 501 is provided on the frame 500 for providing power for the rotation of the outer cylinder 302; the frame 500 is mainly used to provide support for the clamping unit 200 and the extrusion unit 300, and the power motor 501 can provide power for the rotation of the outer cylinder 302.

[0068] Optimized on the above implementation, such as Figure 1 and Figure 6As shown, the pinching unit 200 includes two clamping plates 201 relatively distributed on both sides of the copper rod 100 and two side beams 203 relatively distributed on both sides of the clamping plates 201. The ends of the two clamping plates 201 are slidably mounted on the corresponding side beams 203. The two clamping plates 201 are connected by a first cylinder 202.

[0069] The side beams 203 are slidably mounted on the frame 500 along the length direction of the copper rod 100, and a second cylinder 204 is provided on the frame 500 for providing power for the movement of the side beams 203. A synchronization structure is provided in each side beam 203 for making the two splints 201 move synchronously relative to each other.

[0070] In the present invention, the telescopic movement of the first cylinder 202 can adjust the distance between the clamping plates 201. When the copper rod 100 needs to be clamped, the first cylinder 202 contracts, and the two clamping plates 201 approach each other and clamp and fix the copper rod 100 therebetween. The clamping work of the clamping plates 201 on the copper rod 100 can be achieved by the clamping grooves provided on the clamping plates 201, which can make the contact area between the clamping plates 201 and the copper rod 100 larger and avoid slipping; the synchronous structure in the side beam 203 is mainly used to play a synchronous limiting role on the two clamping plates 201, so that the two clamping plates 201 maintain synchronous relative movement, which can have a centering effect on the copper rod 100; the specific structure of the synchronous structure can be as follows Figure 6 The method shown in the figure is that a rotating column 205 is inserted at both ends of each splint 201, and the rotating column 205 is rotatably installed in the side beam 203, and a threaded groove 206 is opened on the rotating column 205, and an arc edge is provided on the splint 201 for use with the threaded groove 206. The two rotating columns 205 in the side beam 203 are docked, and the spiral directions of the threaded grooves 206 on them are opposite. In this way, when one splint 201 moves, the other splint 201 will move synchronously in the opposite direction. Of course, in some embodiments, levers, transmission chains and other structures can also be used to achieve the synchronous reverse movement of the two splints 201, which are all within the protection scope of this case; when the two splints 201 complete the clamping of the copper rod 100, the second cylinder 204 can be used to push the side beam 203 to move to provide power for the two clamping and feeding units 200 to approach each other; when the defect on the copper rod 100 is repaired, the two splints 201 can be directly loosened to allow the copper rod 100 to continue to be transported.

[0071] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for repairing local defects of a copper rod for wire drawing, characterized in that: It comprises two pinching units that are relatively distributed along the length direction of the copper rod, an extrusion unit located between the two pinching units, and a heating unit used in conjunction with the extrusion unit; The two pinching units are used to clamp parts of the copper rod on both sides of the defective position on the copper rod, and the two pinching units are close to each other and squeeze the defective position of the copper rod between them; The extrusion unit includes a plurality of extrusion bodies, which move circumferentially around the copper rod and are used to extrude defective positions on the outer wall of the copper rod; The heating unit is used to heat and soften the defective position of the copper rod; The repair device is stationary or moves synchronously with the copper rod; the distance between the extrusion body and the copper rod can be adjusted; The extrusion unit further includes an outer cylinder and a plurality of movable frames mounted on the outer cylinder. The heating unit is arranged on the inner wall of the outer cylinder. The movable frames are connected to the extrusion bodies and move along the radial direction of the outer cylinder. When the outer cylinder rotates, it drives the plurality of extrusion bodies to perform circular motion around the outer wall of the copper rod. If the copper rod is in a polygonal shape after extrusion, the extrusion body is in a columnar shape. The extrusion body rotates on the corresponding movable frame and rolls the outer wall of the copper rod. When the outer cylinder rotates, the extrusion body approaches or moves away from the copper rod every time it rotates through a specified angle. The extrusion body is parallel to or inclined relative to the copper rod. If the copper rod is cylindrical after extrusion, the extrusion body is a plate with a groove, and the groove directly presses the defective position of the copper rod; Both ends of each extrusion body are set as cone ends, and transmission rings are set on both sides of several of the cone ends. The inner wall of the transmission ring is set as a transmission cone surface. The transmission cone surface is used in conjunction with the cone end, and the transmission ring can move along the axis direction of the outer cylinder; Support rings are rotatably provided at both ends of the outer cylinder, and teeth are provided on the outer wall of the transmission ring, and the teeth on the transmission ring cooperate with the teeth on the support ring. The transmission ring slides through the support ring, and the transmission ring and the support ring are elastically connected by a plurality of elastic bodies; The teeth of the transmission ring are provided with a power gear for providing power for the rotation of the transmission ring.

2. A device for repairing local defects of a copper rod for wire drawing according to claim 1, characterized in that: The outer cylinder is provided with a power structure, which is used to provide power to the plurality of movable frames and enable them to move synchronously.

3. A device for repairing local defects of a copper rod for wire drawing according to claim 2, characterized in that: The power structure includes an adjustment sleeve sleeved on the outer wall of the outer cylinder and an oil cylinder for providing power for the movement of the adjustment sleeve. Each of the moving frames is provided with two parallel connecting rods, which are rotatably connected to the adjustment sleeve.

4. The device for repairing local defects of a copper rod for wire drawing according to claim 1, characterized in that: The repair device further comprises a frame, the outer cylinder is rotatably mounted on the frame, each of the pinching and conveying units is arranged on the frame, and a power motor for providing power for the rotation of the outer cylinder is arranged on the frame.

5. A device for repairing local defects of a copper rod for wire drawing according to claim 4, characterized in that: The clamping unit includes two clamping plates relatively distributed on both sides of the copper rod and two side beams relatively distributed on both sides of the clamping plates, the ends of the two clamping plates are slidably mounted on the corresponding side beams, and the two clamping plates are connected by a first cylinder; The side beams are slidably mounted on the frame along the length direction of the copper rod, and the frame is provided with a second cylinder for providing power for the movement of the side beams. A synchronization structure is provided in each of the side beams, and the synchronization structure is used to make the two splints move synchronously relative to each other.

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