Local defect repairing device for copper rod for wire drawing

Abstract

The invention relates to the technical field of repairing devices, in particular to a wire drawing copper rod local defect repairing device which comprises two clamping and conveying units oppositely distributed in the length direction of a copper rod, an extrusion unit located between the two clamping and conveying units and a heating unit used in cooperation with the extrusion unit. The two clamping and conveying units are used for clamping parts of copper rods on the two sides of the defect position on the copper rod, and the two clamping and conveying units are close to each other and extrude the defect position of the copper rod between the two clamping and conveying units; by adopting the mode of forcing surplus metal to flow to the defect area, the compensation effect can be achieved through the material of the copper rod, other external materials are not needed, the operation mode is simple, the method is suitable for repairing complex defects such as deep scratches and local defects, the purpose of shaping can be achieved while the defects are repaired, and the method is suitable for large-scale popularization and application. And recovering the defect position to a flat state.

Description

Technical Field

[0001] The present invention relates to the technical field of repair devices, and particularly to a local defect repair device for copper rods used in wire drawing. Background Art

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

[0003] Currently, the repair methods for copper rod surface defects mainly include welding and mechanical grinding. Among them, welding is further divided into high-temperature welding and cold welding. High-temperature welding requires using the same or similar materials as welding wires and welding the welding wire at the defect position through argon protection. This requires workers to be highly concentrated to control the welding amount. And after welding, it also needs to be processed through grinding, etc., to restore the flatness of the copper rod surface. Its operation method is cumbersome, and the repair work requires workers to have high work experience. Cold welding, on the other hand, requires using a repair agent to fill the defect through pressure or chemical bonding. The repair agent in this method, such as epoxy resin containing copper powder, is likely to reduce the electrical conductivity of the copper rod, making it difficult for the copper rod to meet the strict requirements of high-frequency conductors and ultra-fine wire materials. The mechanical grinding method is only applicable to superficial defects, such as scratches, burrs, slight unevenness, etc., and it cannot repair defects such as deep scratches, local missing parts, and cracks. Summary of the Invention

[0004] The present invention provides a local defect repair device for copper rods used in wire drawing, which can effectively solve the problems in the background art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: A local defect repair device for copper rods used in wire drawing, comprising two clamping and feeding units distributed oppositely along the length direction of the copper rod, an extrusion unit located between the two clamping and feeding units, and a heating unit used in cooperation with the extrusion unit; The two clamping and feeding units are used to clamp the parts of the copper rod on both sides of the defect position, and the two clamping and feeding units approach each other and extrude the defect position of the copper rod between them; The extrusion unit includes a plurality of extrusion bodies, and the plurality of extrusion bodies move circumferentially around the copper rod, and the extrusion bodies are used to extrude the defect position on the outer wall of the copper rod; The heating unit is used to heat and soften the defect position of the copper rod.

[0006] In some embodiments of the present invention, the distance between the extrusion body and the copper rod is adjustable.

[0007] In some embodiments of the present invention, the extrusion unit further includes an outer cylinder and a plurality of moving frames mounted on the outer cylinder. The heating unit is arranged on the inner wall of the outer cylinder. The moving frames are connected to the extrusion body, and the moving frames move along the radial direction of the outer cylinder. When the outer cylinder rotates, it drives the plurality of extrusion bodies to perform a circular motion around the outer wall of the copper rod.

[0008] In some embodiments of the present invention, the shape of the extrusion body is columnar, and the extrusion body rotates on the corresponding moving frame, and the extrusion body performs a rolling process on the outer wall of the copper rod.

[0009] In some embodiments of the present invention, a power structure is arranged on the outer cylinder, and the power structure is used to provide power for the plurality of moving frames and make them move synchronously.

[0010] In some embodiments of the present invention, the power structure includes an adjusting sleeve sleeved on the outer wall of the outer cylinder and an oil cylinder used to provide power for the movement of the adjusting sleeve. Two parallel connecting rods are arranged on each of the moving frames, and the connecting rods are rotatably connected to the adjusting sleeve.

[0011] In some embodiments of the present invention, both ends of each extrusion body are set as tapered ends. Transmission rings are arranged on both sides of the plurality of tapered ends. The inner wall of the transmission ring is set as a transmission conical surface, and the transmission conical surface is used in cooperation with the tapered end. The transmission ring can move along the axial direction of the outer cylinder.

[0012] In some embodiments of the present invention, support rings are rotatably arranged at both ends of the outer cylinder. Teeth are arranged on the outer wall of the transmission ring, and the teeth on the transmission ring are used in cooperation 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; A power gear for providing power for the rotation of the transmission ring is arranged on the teeth of the transmission ring.

[0013] In some embodiments of the present invention, the repair device further includes a frame. The outer cylinder is rotatably installed on the frame. Each clamping and feeding unit is arranged on the frame. A power motor for providing power for the rotation of the outer cylinder is arranged on the frame.

[0014] In some embodiments of the present invention, the clamping and feeding unit includes two clamping plates oppositely distributed on both sides of the copper rod and two side beams oppositely distributed on both sides of the clamping plates. The ends of the two clamping plates are slidably installed 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 a second cylinder for providing power for the movement of the side beams is arranged on the frame. A synchronization structure is arranged in each side beam, and the synchronization structure is used to make the two clamping plates move relatively synchronously.

[0015] Through the technical solution of the present invention, the following technical effects can be achieved: By adopting the method of forcing the surplus metal to flow towards the defective area, the effect of compensation can be achieved by using the material of the copper rod itself, without the need to use other external materials. Its operation method is simple, suitable for repairing complex defects such as deep scratches and local deficiencies, and can achieve the purpose of shaping while repairing the defects, making the defective position return to a flat state. At the same time, since the repair material used in this repair method is the material of the copper rod itself, the influence on the conductivity and quality of the copper rod itself is relatively low. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is Figure 1 a schematic structural diagram of the extrusion unit and part of the frame in; Figure 3 is a schematic structural diagram of the extrusion unit in an embodiment of the present invention; Figure 4 is a schematic cross-sectional structural diagram of the extrusion unit in an embodiment of the present invention; Figure 5 is a schematic structural diagram of the transmission ring in an embodiment of the present invention; Figure 6 is a schematic structural diagram of the pinch unit in an embodiment of the present invention; Figure 7 is an exploded structural diagram of the extrusion unit in an embodiment of the present invention; Figure 8 is Figure 7 a schematic structural diagram of the extrusion body in.

[0018] Reference Signs: 100, copper rod; 200, pinch unit; 201, clamping plate; 202, first cylinder; 203, side beam; 204, second cylinder; 205, rotating column; 206, thread groove; 300. Extrusion unit; 301. Extrusion body; 302. Outer cylinder; 303. Moving frame; 304. Adjusting sleeve; 305. Connecting rod; 306. Oil cylinder; 307. Tapered end; 308. Transmission ring; 309. Support ring; 310. Elastic body; 311. Power gear; 400. Heating unit; 500. Frame; 501. Power motor. Detailed implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] As Figures 1 to 8 shown, a local defect repair device for copper rods used in wire drawing according to the present invention includes two clamping and feeding units 200 distributed oppositely along the length direction of the copper rod 100, an extrusion unit 300 located between the two clamping and feeding units 200, and a heating unit 400 used in cooperation with the extrusion unit 300; The two clamping and feeding units 200 are used to clamp the parts of the copper rod 100 on both sides of the defect position on the copper rod 100, and the two clamping and feeding units 200 approach each other and extrude the defect position of the copper rod 100 therebetween; The extrusion unit 300 includes a plurality of extrusion bodies 301, and the plurality of extrusion bodies 301 move circumferentially around the copper rod 100, and the extrusion bodies 301 are used to extrude the defect position on the outer wall of the copper rod 100; The heating unit 400 is used to heat and soften the defect position of the copper rod 100.

[0022] In the present invention, the copper rod 100 is transported through the two clamping and feeding units 200 and the extrusion unit 300. When it is found that there are defects in a local position on the copper rod 100, the copper rod 100 can be stopped from being transported, and the repair device repairs the defect position on the copper rod 100, or the repair device can move synchronously with the copper rod 100, so that the repair device is relatively stationary with the defect position, thereby repairing the defect position. This device can be applied to the working state of continuous production and coherent processing of the copper rod 100, and of course can also be applied to the repair work of the defect position on a small section of the intercepted copper rod 100; Two clamping units 200 are respectively arranged on both sides of the extrusion unit 300. The two clamping units 200 and the extrusion unit 300 are arranged in a straight line along the conveying direction of the copper rod 100. The two clamping units 200 can clamp the parts of the copper rod 100 on both sides of the extrusion unit 300. And when the two clamping units 200 move synchronously towards the extrusion unit 300, the two clamping units 200 can extrude the part of the copper rod 100 between them, reducing the length of the part of the copper rod 100 between the two clamping units 200. This can force the surplus metal around the defect to move towards the defect area to compensate for the material loss. The clamping unit 200 can use high-temperature-resistant clamping jaws, pressing plates and other structures to clamp the copper rod 100, or can also use a number of arc plates matching the diameter of the copper rod 100 to clamp and fix the copper rod 100. The movement of the clamping unit 200 can be powered by conventional cylinders, pushing structures and other structures; The heating unit 400 is mainly used to heat and soften the defect position of the copper rod 100 to facilitate the flow of metal and fill the defect position. The heating unit 400 can use electromagnetic induction heating or other conventional heating methods. When using electromagnetic induction heating, to avoid the extrusion body 301 in the extrusion unit 300 from also 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 consumption. The material for making the extrusion body 301 can be ceramics, carbon-based materials, high-performance polymers, etc.; The extrusion unit 300 is mainly used to perform extrusion treatment on the heated defect position. Cooperating with the operation of the two clamping units 200 to extrude the excess metal towards the defect position, the defect position can be replenished with materials, the defect position can be restored to a flat state, and the repair of the copper rod 100 is completed. At the same time, the extrusion of the extrusion unit 300 can make the metal at the defect position more solid, avoiding defects such as residual air holes inside the copper rod 100 and improving the defect repair quality. The extrusion of the extrusion unit 300 on the defect position of the copper rod 100 is mainly completed by a number of extrusion bodies 301. When the extrusion bodies 301 move circumferentially around the copper rod 100, the extrusion bodies 301 can perform comprehensive extrusion treatment on the circumferential direction of the defect position, so that the metal material is evenly distributed in the circumferential direction of the part of the copper rod 100 where the defect position is located. While repairing the defect, the small section of the copper rod 100 can be kept in a uniform and flat state as a whole, realizing both the repair work and the shaping work; In actual use, the extrusion body 301 can be a columnar body or a plate body with grooves. When the extrusion body 301 is a plate body, the grooves on it can be used to directly buckle the defective position of the copper rod 100; when the extrusion body 301 is a columnar body, 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 is in a line contact state with the copper rod 100. In this way, when the extrusion body 301 moves circumferentially around the copper rod 100, the extrusion body 301 can be in full contact with the circumference of the copper rod 100 to achieve the working effect of full extrusion. When the axis of the extrusion body 301 is relatively inclined to the axis of the copper rod 100, the extrusion body 301 is in a point contact state 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 inclined extrusion body 301 can more easily cause local deformation of the copper rod 100, deform and repair the defective position. At the same time, because the force of the extrusion body 301 on the copper rod 100 is inclined, the movement of the extrusion body 301 can cause small-area torsion of the defective position of the copper rod 100, which can facilitate the closure of the crack at the defective position; When the copper rod 100 is repaired for defects, its heating temperature can be controlled between four hundred degrees and six hundred degrees to balance plasticity and oxidation risk, and it is necessary to avoid local overheating leading to grain coarsening or melting, and infrared temperature measurement or thermocouple monitoring is required.

[0023] Optimized from the above implementation, the distance between the extrusion body 301 and the copper rod 100 can be adjusted and set; Since the copper rod 100 needs to pass through the space between several extrusion bodies 301, initially, the space between several extrusion bodies 301 needs to be enlarged. During defect repair, the extrusion body 301 is then moved towards the copper rod 100. Therefore, it is necessary to make the distance between the extrusion body 301 and the copper rod 100 adjustable and set, and this method can enable the extrusion body 301 to repair defects on copper rods 100 with different diameters; it should be noted that the specific moving power of the extrusion body 301 can be provided by conventional structures such as cylinders and pushing structures.

[0024] Optimized from the above implementation, as Figure 4 shown, the extrusion unit 300 further includes an outer cylinder 302 and several moving frames 303 installed on the outer cylinder 302. The heating unit 400 is arranged on the inner wall of the outer cylinder 302. The moving frames 303 are connected to the extrusion bodies 301, and the moving frames 303 move along the radial direction of the outer cylinder 302. When the outer cylinder 302 rotates, it drives several extrusion bodies 301 to perform a circular motion around the outer wall of the copper rod 100; In the present invention, the extrusion body 301 is located inside the outer cylinder 302. The moving frame 303 can slide through the outer cylinder 302 and be connected to the extrusion body 301. Alternatively, the moving frame 303 can be slidably mounted at the end or other positions of the outer cylinder 302, as long as the relative sliding movement between the moving frame 303 and the extrusion body 301 in the radial direction of the outer cylinder 302 can be achieved. For example, Figure 7 As shown, a sliding opening is provided on the outer cylinder 302, and the moving frame 303 can slide through the sliding opening, thereby realizing the relative sliding connection relationship between the moving frame 303 and the outer cylinder 302. The outer cylinder 302 is coaxial with the copper rod 100, and the copper rod 100 passes through the outer cylinder 302 for transportation. The outer cylinder 302 mainly provides support for the extrusion body 301, the moving frame 303, and the heating unit 400 thereon. The outer cylinder 302 can be of any shape such as circular or polygonal, as long as it can meet the requirements of this case, it is within the protection scope of this case. When the outer cylinder 302 rotates around the copper rod 100, the outer cylinder 302 will drive a plurality of extrusion bodies 301 to move around the copper rod 100 by means of a plurality of moving frames 303. The moving frame 303 can push the extrusion body 301 to move towards the copper rod 100 and make the extrusion body 301 extrude the outer wall of the copper rod 100, thus achieving the working effect of a plurality of extrusion bodies 301 performing circumferential extrusion repair around the copper rod 100; 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 by 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 by the specified angle again, the extrusion body 301 extrudes the copper rod 100 again, thereby realizing the repair work of 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 polygonal. If the extrusion body 301 is a plate body 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.

[0025] Optimized based on the above implementation, such as Figure 4 As shown, the shape of the extrusion body 301 is columnar, and the extrusion body 301 rotates on the corresponding moving frame 303, and the extrusion body 301 performs rolling treatment on the outer wall of the copper rod 100.

[0026] The specific connection method between the extrusion body 301 and the moving frame 303 can be realized through structures such as bearings and connecting shafts, or by opening a plurality of circular grooves on the outer wall of the extrusion body 301 and installing the end of the moving frame 303 in the circular grooves. Of course, when using this method, conventional structures such as bearings can also be configured. Since its connection method can adopt a variety of conventional methods, it will not be elaborated here; Since the extrusion body 301 can rotate on the moving frame 303, when the outer cylinder 302 moves around the copper rod 100, the extrusion body 301 can perform rolling treatment on the outer wall of the copper rod 100, which can avoid friction between the extrusion body 301 and the copper rod 100 and affect the surface flatness of the copper rod 100, and improve the shaping quality of the copper rod 100; It should be noted that when the extrusion body 301 performs rolling treatment on the copper rod 100, the extrusion body 301 can roll actively or be driven by the frictional force on the outer wall of the copper rod 100. When the extrusion body 301 rolls actively, the outer wall of the extrusion body 301 is relatively stationary with the outer wall of the copper rod 100, and no shear stress will be generated between them. Therefore, the surface of the copper rod 100 processed in this way is relatively flat. When it is driven by the friction on the outer wall of the copper rod 100, there will be a frictional force between the copper rod 100 and the extrusion body 301. Although this force is smaller than the sliding frictional force between the extrusion body 301 and the copper rod 100, it will still have a certain impact on the shape of the copper rod 100. In some cases where the processing accuracy requirements are relatively low, this method can be adopted.

[0027] Since when several extrusion bodies 301 extrude the copper rod 100, the extrusion forces of several extrusion bodies 301 on the copper rod 100 need to be balanced, otherwise the copper rod 100 will deform from a regular cylindrical shape or other shapes into an irregular shape such as a flat shape. Therefore, it is necessary to make several 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 for several moving frames 303 and make them move synchronously; the synchronous movement of several moving frames 303 will drive several extrusion bodies 301 to also move synchronously; it should be noted that the synchronous movement of several extrusion bodies 301 can also achieve the effect of centering and positioning 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 distances between different positions on the heating unit 400 and the copper rod 100 are kept consistent, so that the heating unit 400 can achieve a uniform heating effect on the copper rod 100.

[0028] Optimized from the above implementation, as Figure 3 shown, the power structure includes an adjusting sleeve 304 sleeved on the outer wall of the outer cylinder 302 and an oil cylinder 306 for providing power for the movement of the adjusting sleeve 304. Two parallel connecting rods 305 are provided on each moving frame 303, and the connecting rods 305 are rotatably connected to the adjusting sleeve 304.

[0029] In the present invention, the adjusting sleeve 304 can be connected to a plurality of moving frames 303 through a plurality of connecting rods 305. In this way, when the adjusting sleeve 304 moves, it will drive the plurality of moving frames 303 to move synchronously, thereby synchronously adjusting the positions of the plurality of pressing bodies 301. The arrangement of the two mutually parallel connecting rods 305 on the moving frame 303 can facilitate the guiding effect on the moving frame 303, avoid the force transmitted from the adjusting sleeve 304 to the moving frame 303 from tilting the moving frame 303, and ensure that the moving frame 303 can perform translational motion. The oil cylinder 306 is mainly used to provide the moving power for the adjusting sleeve 304, and the specific number of oil cylinders 306 can be determined according to the actual situation.

[0030] Optimized based on the above implementation, as Figure 5 shown, both ends of each pressing body 301 are provided with tapered ends 307. Transmission rings 308 are provided on both sides of the plurality of tapered ends 307. The inner wall of the transmission ring 308 is provided with a transmission conical surface, which is used in cooperation with the tapered end 307. The transmission ring 308 can move along the axis direction of the outer cylinder 302.

[0031] In the present invention, the transmission ring 308 can directly drive the pressing body 301 to rotate through the tapered end 307, thereby realizing the active rotation motion mode of the pressing body 301. No shear stress will be generated between the pressing body 301 and the copper rod 100. The pressing body 301 only has a rolling effect on the copper rod 100, thereby improving the surface flatness of the copper rod 100. And since the distance between the pressing body 301 and the copper rod 100 is adjustable, when the pressing body 301 moves, the transmission ring 308 needs to move along the axis direction of the outer cylinder 302 to ensure that the tapered end 307 and the transmission conical surface of the transmission ring 308 maintain a transmission state, thereby facilitating the transmission of power from the transmission ring 308 to the pressing body 301 at any position.

[0032] Optimized based on the above implementation, as Figure 2 and Figure 5 shown, support rings 309 are rotatably provided at both ends of the outer cylinder 302. Teeth are provided on the outer wall of the transmission ring 308, and the teeth on the transmission ring 308 are used in cooperation 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 through a plurality of elastic bodies 310; A power gear 311 for providing power for the rotation of the transmission ring 308 is arranged on the teeth of the transmission ring 308.

[0033] 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 axis 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 acting force for the transmission ring 308, so that the transmission conical surface in the transmission ring 308 is always in a transmission contact state with the cone end 307. In this way, only by using the power gear 311 to transmit power to the transmission ring 308, the purpose of providing power for the extrusion body 301 at any position can be achieved; when the transmission ring 308 moves, there will be a relative sliding between it and the power gear 311, and the power of the power gear 311 is provided by the motor.

[0034] Optimized based on the above implementation, as Figure 1 shown, the repair device further includes a frame 500. The outer cylinder 302 is rotatably installed on the frame 500, and each clamping unit 200 is arranged on the frame 500. A power motor 501 for providing power for the rotation of the outer cylinder 302 is arranged on the frame 500; 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.

[0035] Optimized based on the above implementation, as Figure 1 and Figure 6 shown, the clamping unit 200 includes two clamping plates 201 oppositely distributed on both sides of the copper rod 100 and two side beams 203 oppositely distributed on both sides of the clamping plates 201. The ends of the two clamping plates 201 are slidably installed on the corresponding side beams 203, and the two clamping plates 201 are connected by a first cylinder 202; The side beams 203 are slidably installed on the frame 500 along the length direction of the copper rod 100, and a second cylinder 204 for providing power for the movement of the side beams 203 is arranged on the frame 500. A synchronous structure is arranged in each side beam 203, and the synchronous structure is used to make the two clamping plates 201 move relatively synchronously.

[0036] In the present invention, the telescopic movement of the first cylinder 202 can adjust the distance between the two clamping plates 201. When it is necessary to clamp the copper rod 100, 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 copper rod 100 by the clamping plates 201 can be realized by the clamping grooves opened on the clamping plates 201, so that the contact area between the clamping plates 201 and the copper rod 100 is relatively large, avoiding slipping; the synchronous structure in the side beam 203 is mainly used to synchronously limit the two clamping plates 201, so that the two clamping plates 201 maintain synchronous relative movement, which can achieve a centering effect on the copper rod 100; the specific structure of the synchronous structure can adopt, for example, Figure 6In the manner shown, rotating columns 205 are inserted through both ends of each clamping plate 201. The rotating columns 205 are rotatably installed in the side beams 203. Threaded grooves 206 are formed on the rotating columns 205, and arc-shaped edges that cooperate with the threaded grooves 206 are provided on the clamping plates 201. The two rotating columns 205 in the side beams 203 are butted, and the spiral directions of the threaded grooves 206 thereon are opposite. In this way, when one clamping plate 201 moves, the other clamping plate 201 will move synchronously in the opposite direction. Of course, in some embodiments, structures such as levers and transmission chains can also be used to achieve the synchronous reverse movement of the two clamping plates 201, and they are all within the protection scope of this case; after the two clamping plates 201 complete the clamping of the copper rod 100, the side beams 203 can be pushed by the second cylinder 204 to provide power for the mutual approach of the two feeding units 200; when the defect repair on the copper rod 100 is completed, the two clamping plates 201 can be directly loosened to continue the conveyance of the copper rod 100.

[0037] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A local defect repair device for copper rods used in wire drawing, characterized in that, It includes two pinch units relatively distributed along the length direction of the copper rod, a squeezing unit located between the two pinch units, and a heating unit used in cooperation with the squeezing unit; The two pinch units are used to clamp the parts of the copper rod on both sides of the defect position on the copper rod, and the two pinch units approach each other and squeeze the defect position of the copper rod between them; The squeezing unit includes a number of squeezing bodies, and the number of squeezing bodies move circumferentially around the copper rod, and the squeezing bodies are used to squeeze the defect position on the outer wall of the copper rod; The heating unit is used to heat and soften the defect position of the copper rod.

2. The local defect repair device for copper rods used in wire drawing according to claim 1, wherein, The distance between the squeezing body and the copper rod can be adjusted.

3. A local defect repair device for copper rods used in wire drawing according to claim 1 or 2, characterized in that, The squeezing unit further includes an outer cylinder and a number of moving frames installed on the outer cylinder. The heating unit is arranged on the inner wall of the outer cylinder. The moving frame is connected to the squeezing body, and the moving frame moves along the radial direction of the outer cylinder. When the outer cylinder rotates, it drives the number of squeezing bodies to perform circular motion around the outer wall of the copper rod.

4. A local defect repair device for copper rods used in wire drawing according to claim 3, characterized in that, The shape of the squeezing body is columnar, and the squeezing body rotates on the corresponding moving frame, and the squeezing body performs rolling treatment on the outer wall of the copper rod.

5. The local defect repair device for copper rods used in wire drawing according to claim 3, characterized in that, A power structure is arranged on the outer cylinder, and the power structure is used to provide power for the number of moving frames and make them move synchronously.

6. The local defect repair device for copper rods used in wire drawing according to claim 5, characterized in that, The power structure includes an adjusting sleeve sleeved on the outer wall of the outer cylinder and an oil cylinder used to provide power for the movement of the adjusting sleeve. Two parallel connecting rods are arranged on each moving frame, and the connecting rod is rotatably connected to the adjusting sleeve.

7. A local defect repair device for copper rods used in wire drawing according to claim 3, characterized in that, Both ends of each squeezing body are set as tapered ends. Transmission rings are arranged on both sides of the number of tapered ends. The inner wall of the transmission ring is set as a transmission conical surface, and the transmission conical surface is used in cooperation with the tapered end. The transmission ring can move along the axial direction of the outer cylinder.

8. A local defect repair device for copper rods used in wire drawing according to claim 7, characterized in that, Support rings are rotatably arranged at both ends of the outer cylinder. Teeth are arranged on the outer wall of the transmission ring, and the teeth on the transmission ring are used in cooperation 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 number of elastic bodies; A power gear for providing power for the rotation of the transmission ring is arranged on the teeth of the transmission ring.

9. A local defect repair device for copper rods used in wire drawing according to claim 3, characterized in that, The repair device further includes a frame. The outer cylinder is rotatably installed on the frame. Each pinch unit is arranged on the frame. A power motor for providing power for the rotation of the outer cylinder is arranged on the frame.

10. A local defect repair device for copper rods used in wire drawing, characterized in that, The pinch 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 installed on the corresponding side beams, and the two clamping plates are connected by a first cylinder; The side beam is slidably installed on the frame along the length direction of the copper rod, and a second cylinder for providing power for the movement of the side beam is arranged on the frame. A synchronous structure is arranged in each side beam, and the synchronous structure is used to make the two clamping plates move relatively synchronously.

Images