High-strength copper bar continuous drawing mechanism

Abstract

The invention relates to the technical field of copper bar machining, in particular to a high-strength copper bar continuous drawing mechanism which comprises a conveying roller and a pressing unit used in cooperation with the conveying roller, and the pressing unit comprises a plurality of transmission rod sets and a pressing belt arranged on the transmission rod sets in a transmission mode; the copper bar blank is extruded through cooperation of the conveying rollers and the pressing belt, so that the copper bar blank can deform and be attached to the outer walls of the conveying rollers, the conveying rollers and the pressing belt can achieve the face extrusion contact effect on the copper bar blank, the stress concentration phenomenon is effectively avoided, extrusion damage to the copper bar blank is avoided, and the production efficiency is improved. The copper bar blank can be subjected to protective drawing treatment conveniently, the contact area between the copper bar blank and the conveying roller and the contact area between the copper bar blank and the pressing belt are large, the friction effect is remarkably enhanced, the drawing requirement can be met without large extrusion force between the conveying roller and the pressing belt, and therefore the strength requirement for equipment and the energy supply requirement can be lowered.

Description

Technical Field

[0001] The invention relates to the technical field of copper bar processing, in particular to a high-strength copper bar continuous drawing mechanism. Background Art

[0002] Copper busbars, also known as copper busbars, are key conductive components in power transmission, new energy equipment, rail transit, industrial power distribution and other fields. They are widely used due to their excellent electrical conductivity, thermal conductivity and mechanical strength. With the rapid development of industries such as ultra-high voltage power grids, new energy vehicles, and 5G base stations, the market demand for high-performance copper busbars has surged, especially requiring them to have high strength, high precision and good surface quality.

[0003] When making copper busbars, drawing is an essential process step. The specific steps of drawing are to first pass one end of the blank through the die, use the clamping structure to clamp the end of the blank, and move the clamping structure laterally to allow the blank to continue to pass through the die. The die shapes the blank, thereby completing the drawing of the copper busbar. In common processing methods, the drawing of copper busbars can be divided into intermittent drawing and continuous drawing. Intermittent drawing is to cut the blank after drawing a certain length, and then continue to draw the same length, and repeat this process. Continuous drawing is to continuously pull the blank so that it continues to pass through the die.

[0004] In the continuous drawing process, two opposing conveyor rollers are often used to squeeze and convey the blank between them, so that the blank is continuously drawn. However, in this drawing method, due to the small contact area between the conveyor rollers and the blank, the stress is more concentrated. Therefore, the conveyor rollers will exert a large pressure on the blank, which can easily cause the blank to deform. If the extrusion force of the conveyor rollers on the blank is reduced, it is easy to cause slippage between the conveyor rollers and the blank, and the conveyor rollers cannot effectively pull the blank. Summary of the Invention

[0005] The present invention provides a high-strength copper busbar continuous drawing mechanism, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A high-strength copper bar continuous drawing mechanism comprises: a conveying roller and a pressing unit arranged opposite thereto, wherein the pressing unit presses the copper bar blank onto the outer wall of the conveying roller; The pressing unit includes a transmission rod group and a pressing belt. The transmission rod group is provided with multiple ones corresponding to the conveying rollers. The pressing belt is wound around the outer rings of the multiple transmission rod groups and partially covered on the outer wall of the conveying roller along the circumferential direction. The pressing belt cooperates with the conveying roller to extrude and convey the copper bar blank between the two.

[0007] Furthermore, the pressing belt is made of at least one material selected from the group consisting of steel cord core rubber, aramid fiber reinforcement, polyester-nylon blended canvas and stainless steel wire mesh core.

[0008] Furthermore, two groups of transmission rod groups are relatively arranged on both sides of the conveying roller in the radial direction.

[0009] Furthermore, the transmission rod group includes a pressing rod and a sub-rod arranged in parallel, and the two pressing rods are respectively arranged at the radial ends of the conveying roller and are driven to move closer to or away from the conveying roller by the adjustment unit.

[0010] Furthermore, the adjustment unit is provided on a column, a fixed disk is provided on the column, and the conveying roller is rotatably mounted on the fixed disk; The adjustment unit includes a crossbeam vertically arranged with respect to the column. The crossbeam is slidably connected with the column via a first slide seat arranged at an end thereof, and the pressing rod is rotatably mounted on the first slide seat.

[0011] Furthermore, a second slide is sleeved on the crossbeam, the second slide is slidably connected to the crossbeam, the auxiliary rod is rotatably mounted on the second slide, and the first slide is connected to the second slide via a push-pull assembly.

[0012] Furthermore, an elastic body is provided between the first slide seat and the end of the column.

[0013] Furthermore, the adjusting units are provided with two corresponding to the two groups of transmission rods, and are respectively located on both sides of the fixed plate; A synchronizer ring is rotatably provided on the outer ring of the fixed disk. The synchronizer ring is connected to the two first slides respectively through two oblique rods. The two oblique rods are symmetrically provided with respect to the rotation center of the synchronizer ring.

[0014] Furthermore, ribs are provided at both ends of the auxiliary rod.

[0015] Furthermore, a cooling unit is provided corresponding to the conveying roller, and the cooling unit includes a fixed beam and a plurality of nozzles provided thereon, the nozzles are provided toward the conveying roller, and the fixed beam is fixedly connected to the column.

[0016] The beneficial effects of the present invention are: The copper bar blank is extruded by the cooperation of the conveyor roller and the pressing belt, so that the copper bar blank can be deformed and attached to the outer wall of the conveyor roller, so that the conveyor roller and the pressing belt can achieve surface extrusion contact effect on the copper bar blank, effectively avoiding stress concentration and extrusion damage to the copper bar blank, facilitating protective drawing of the copper bar blank. Moreover, due to the large contact area with the conveyor roller and the pressing belt, the friction effect is significantly enhanced. There is no need to set a large extrusion force between the conveyor roller and the pressing belt to meet the drawing requirements, which can reduce the strength requirements and energy supply requirements of the equipment and avoid the copper bar blank slipping during drawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 yes Figure 1 Schematic diagram of the structure of the conveying roller and the pressing unit; Figure 3 yes Figure 2 Schematic diagram of explosion structure; Figure 4 2 is a schematic structural diagram of a pressing belt in an embodiment of the present invention; Figure 5 is a schematic structural diagram of an adjustment unit in an embodiment of the present invention; Figure 6 2 is a schematic structural diagram of a roller in an embodiment of the present invention; Figure 7 2 is a schematic structural diagram of a spiral pattern in an embodiment of the present invention; Figure 8 Schematic diagram of the structure of the cooling unit in an embodiment of the present invention.

[0019] Reference numerals: 100, conveyor roller; 101, roller; 102, horizontal belt; 103, spiral pattern; 200, pressing unit; 201, transmission rod assembly; 202, pressing belt; 203, pressing rod; 204, auxiliary rod; 205, rib; 300, copper busbar blank; 400, adjustment unit; 401, column; 402, first slide; 403, crossbeam; 404, second slide; 405, push-pull assembly; 406, elastic body; 407, fixed plate; 408, synchronizer ring; 409, diagonal rod; 500, cooling unit; 501, fixed beam; 502, branch guide groove; 503, nozzle; 504, liquid supply pipe. DETAILED DESCRIPTION

[0020] 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.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] The present invention discloses a high-strength copper bar continuous drawing mechanism, such as Figures 1 to 4 As shown, the conveying roller 100 and the pressing unit 200 arranged opposite to it, the pressing unit 200 squeezes the copper bar blank 300 and applies it to the outer wall of the conveying roller 100; the pressing unit 200 includes a transmission rod group 201 and a pressing belt 202, and a plurality of transmission rod groups 201 are provided corresponding to the conveying roller 100. The pressing belt 202 is wound around the outer rings of the plurality of transmission rod groups 201 and partially covers the outer wall of the conveying roller 100 along the circumferential direction. The pressing belt 202 cooperates with the conveying roller 100 to extrude and convey the copper bar blank 300 between the two.

[0024] In the present invention, the conveying roller 100 can be placed horizontally or vertically. When the conveying roller 100 is placed horizontally, the cross-section of the copper bar blank 300 is horizontal and conveyed horizontally. When the conveying roller 100 is placed vertically, the cross-section of the copper bar blank 300 is vertical and conveyed horizontally. Therefore, the conveying method of the copper bar blank 300 is directly related to the placement method of the conveying roller 100. Taking the horizontal placement of the conveying roller 100 as an example, the pressing unit 200 is corresponding to the conveying roller 100. The pressing unit 200 and the conveying roller 100 can cooperate with each other to continuously extrude and convey the copper bar blank 300 to achieve a continuous drawing effect.

[0025] The specific structure of the pressing unit 200 can be in the form of several transmission rod groups 201 and pressing belts 202. Several transmission rod groups 201 can provide support and auxiliary transmission for the pressing belts 202. Part of the pressing belt 202 is attached to the outer wall of the conveyor roller 100, so that a surface contact is formed between the pressing belt 202 and the conveyor roller 100. When the conveyor roller 100 rotates, it drives the transmission rod group 201 and the pressing belt 202 to move synchronously. The pressing belt 202 and the conveyor roller 100 always maintain a surface contact state. Then, the end of the copper bar blank 300 passing through the mold is extended into the pressing unit 200. Between the belt 202 and the conveyor roller 100, the pressing belt 202 squeezes the copper bar blank 300 against the outer wall of the conveyor roller 100. As the conveyor roller 100 rotates, the conveyor roller 100 and the pressing belt 202 cooperate to keep the copper bar blank 300 in an extruded state and achieve a conveying effect on the copper bar blank 300. That is, when the copper bar blank 300 is subjected to a large extrusion force between the conveyor roller 100 and the pressing belt 202, the copper bar blank 300 is subjected to a surface force mode, and a continuous conveying effect of the copper bar blank 300 can be achieved, thereby achieving a continuous drawing process of the copper bar blank 300. It should be pointed out that, since the pressing belt 202 presses the copper bar blank 300 onto the outer wall of the conveyor roller 100, the copper bar blank 300 on the conveyor roller 100 is in an arc shape. The local deformation of the copper bar blank 300 here is small, which does not affect the overall use of the copper bar blank 300. Moreover, when the copper bar blank 300 is output on the conveyor roller 100, it can be transported in any direction along the tangent direction of the conveyor roller 100, such as horizontally or vertically. When the copper bar blank 300 is output, its own arc shape can be left unprocessed and it can be directly wound onto the winding roller using its arc shape, or it can be straightened using a straightening structure such as a roller.

[0026] The copper bar blank 300 is extruded by the cooperation of the conveying roller 100 and the pressing belt 202, so that the copper bar blank 300 can be deformed and attached to the outer wall of the conveying roller 100, so that the conveying roller 100 and the pressing belt 202 can achieve a surface extrusion contact effect on the copper bar blank 300, effectively avoiding stress concentration and extrusion damage to the copper bar blank 300, facilitating protective drawing of the copper bar blank 300, and because the contact area with the conveying roller 100 and the pressing belt 202 is large, the friction effect is significantly enhanced, and a large extrusion force does not need to be set between the conveying roller 100 and the pressing belt 202 to meet the drawing requirements, which can reduce the strength requirements and energy supply requirements of the equipment and avoid the copper bar blank 300 from slipping during drawing; During the specific implementation process, the radius of the conveying roller 100 can be selectively used according to the thickness or specifications of the copper bar blank 300, and when the conveying roller 100 is large, its interior can be set to a hollow state; since the conveying roller 100 is used to convey the copper bar blank 300, the conveying direction of the copper bar blank 300 will change, so that the copper bar blank 300 can complete continuous drawing work in a small space, thereby reducing the equipment footprint; the output direction of the copper bar blank 300 can be determined according to the coverage area of ​​the pressing belt 202 on the conveying roller 100, and the adjustment of the output direction of the copper bar blank 300 can be adapted to the drawing requirements of different occasions, and its functionality and practicality are improved.

[0027] Since the pressing belt 202 needs to provide a stable extrusion force for the copper busbar blank 300 on the conveying roller 100 so as to realize the drawing of the copper busbar blank 300 by friction, there are certain requirements for the material strength of the pressing belt 202. Specifically, the pressing belt 202 is made of at least one material selected from steel cord core rubber, aramid fiber reinforcement, polyester-nylon blended canvas and stainless steel wire mesh core; the tensile strength of steel cord core rubber is generally between 8-25 MPa, which is mainly suitable for large-sized copper busbars, and its core advantages are resistance to longitudinal tearing and dynamic fatigue; the tensile strength of aramid fiber reinforcement is between 22-30 MPa, which is mainly suitable for high-speed drawing, and its reliable advantages are high strength and light weight; the tensile strength of polyester-nylon blended canvas is between 12-18 MPa, which is mainly suitable for small and medium-sized copper busbars, and its core advantages are low cost and good flexibility; the tensile strength of stainless steel wire mesh core is between 25-35 MPa, which is mainly suitable for high-temperature environments, and its core advantages are resistance to heat deformation and creep. In actual use, in order to improve the contact performance with the copper busbar blank 300, the pressing belt 202 can adopt a composite structure design, that is, a combination of a substrate and a functional layer. The substrate can be made of the above-mentioned materials, and the functional layer can be made of ceramic particle-embedded rubber, prismatic groove polyurethane, PTFE coating, graphene-modified silicone, etc.

[0028] Optimized in the above implementation, when the copper bar blank 300 is conveyed on the conveyor roller 100, since the copper bar blank 300 is attached to the surface of the conveyor roller 100 in the circumferential direction of the conveyor roller 100, the size of the force-bearing area of ​​the copper bar blank 300 on the conveyor roller 100 is related to the application range of the pressing belt 202 on the conveyor roller 100. When the range is too small, the effective force-bearing area between the copper bar blank 300 and the conveyor roller 100 and the pressing belt 202 is small. At this time, the extrusion pressure on the copper bar blank 300 needs to be increased so that it can maintain the drawing state, and the increase in the extrusion pressure will affect the The surface of the copper bar blank 300 is affected. Therefore, in order to facilitate direct and effective limitation of the above range and facilitate the rapid integration of the equipment into the workshop production line, the application area of ​​the pressing belt 202 in the circumferential direction of the conveyor roller 100 can be a semicircle of the conveyor roller 100; in this way, when the copper bar blank 300 is input from the lower side of the conveyor roller 100, it can be output in the reverse direction from the upper side of the conveyor roller 100, thereby allowing a larger contact area to exist between the copper bar blank 300 and the conveyor roller 100, and facilitating the input position and output position of the copper bar blank 300 to be set on the same side of the conveyor roller 100.

[0029] When the copper bar blank 300 is conveyed by the conveying roller 100 and the pressing belt 202, in order to improve the effective pulling of the copper bar blank 300 by the conveying roller 100 and the pressing belt 202 and increase the friction effect on the copper bar blank 300, the copper bar blank 300 can be wrapped around the conveying roller 100 at least once. In this way, the friction pulling mode can be transformed into a winding traction mode through the winding mode, and the pulling stability is higher. In addition, the pressing force provided by the pressing belt 202 on the conveying roller 100 and the copper bar blank 300 is smaller. like Figure 2 As shown, when the copper bar blank 300 is wound around the conveying roller 100 for at least one circle, the shape of the copper bar blank 300 on the conveying roller 100 is spiral. If the input point position and the output point position of the copper bar blank 300 remain unchanged, the copper bar blank 300 on the outer wall of the conveying roller 100 will be displaced along the axial direction of the conveying roller 100 as the conveying roller 100 rotates, that is, along the axial direction of the conveying roller 100, the copper bar blank 300 will produce relative motion with the conveying roller 100 and the pressing belt 202, while along the circumferential direction of the conveying roller 100, the copper bar blank 300, the conveying roller 100 and the pressing belt 202 are relatively stationary. To achieve this purpose, a plurality of ribs can be provided on the outer wall of the conveying roller 100, and the plurality of ribs are arranged along the circumferential direction of the conveying roller 100, and the length direction of the ribs is along the axial direction of the conveying roller 100; of course, the following method can also be used: Figure 6In the manner shown, the conveying roller 100 includes a roller 101 and a plurality of transverse belts 102 distributed in the circumferential direction of the roller 101. The length direction of the transverse belt 102 is along the axial direction of the roller 101, and the transverse belt 102 is driven along the axial direction of the roller 101. Transmission wheels can be provided at both ends of the roller 101, and the transmission wheels are rotatably mounted on the roller 101. In this way, when the roller 101 performs a circular motion, the transverse belt 102 can be transported along the axial direction of the roller 101, thereby enabling the copper bar blank 300 to move along the axial direction of the conveying roller 100, thereby achieving a spiral winding conveying effect of the copper bar blank 300. In some embodiments, the following method can also be used: Figure 7 In the manner shown, a spiral pattern 103 is provided on the outer wall of the conveying roller 100 , and the copper bar blank 300 is conveyed in a spiral winding manner by generating a thrust along the axis direction of the conveying roller 100 when the spiral pattern 103 rotates.

[0030] When the conveyor roller 100 and the pressing belt 202 cooperate to draw the copper bar blank 300, the length of the conveyor roller 100 and the pressing belt 202 along the axial direction of the conveyor roller 100 can be appropriately extended to obtain a larger working area. In this way, multiple copper bar blanks 300 can be inserted between the conveyor roller 100 and the pressing belt 202 at the same time, that is, the conveyor roller 100 conveys at least one copper bar blank 300 at the same time, thereby making it possible to draw multiple copper bar blanks 300 at the same time, thereby improving work efficiency; of course, when multiple copper bar blanks 300 are drawn at the same time, multiple molds, winding structures, cutting structures, etc. need to be configured.

[0031] Optimized on the above implementation, such as Figure 3 As shown, two transmission rod groups 201 are arranged opposite each other on both radial sides of the conveyor roller 100. The transmission rod group 201 includes a pressing rod 203 and a sub-rod 204 arranged in parallel. The two pressing rods 203 are respectively arranged at the radial ends of the conveyor roller 100 and are driven toward or away from the conveyor roller 100 by the adjustment unit 400.

[0032] The adjustment unit 400 is mounted on a column 401, which is provided with a fixed plate 407. The conveyor roller 100 is rotatably mounted on the fixed plate 407. The adjustment unit 400 includes a crossbeam 403 perpendicular to the column 401. The crossbeam 403 is slidably connected to the column 401 via a first slide 402 provided at its end. The pressing rod 203 is rotatably mounted on the first slide 402. A second slide 404 is sleeved on the crossbeam 403 and slidably connected to the crossbeam 403. The auxiliary rod 204 is rotatably mounted on the second slide 404. The first slide 402 is connected to the second slide 404 via a push-pull assembly 405.

[0033] The adjustment unit 400 is used to adjust the extrusion pressure between the pressing belt 202 and the conveyor roller 100. By utilizing the adjustment function of the adjustment unit 400 on the pressing belt 202, the extrusion pressure of the copper busbar blank 300 between the pressing belt 202 and the conveyor roller 100 can be changed, thereby facilitating the adjustment of the specific usage of the equipment according to technical characteristics such as the size of the coverage area of ​​the pressing belt 202 on the conveyor roller 100, the specifications of the copper busbar blank 300, and the number of winding turns of the copper busbar blank 300 on the conveyor roller 100.

[0034] Two adjustment units 400 are provided corresponding to the two groups of transmission rod groups 201 and are respectively located on both sides of the fixed plate 407; an elastic body 406 is provided between the first slide 402 and the end of the column 401. In the present invention, the two adjusting units 400 arranged opposite to each other can act on the front and rear sides of the pressing unit 200 at the same time, the column 401 can provide guidance and support for the first slide 402 thereon, the elastic body 406 is mainly used to provide a reset elastic force for the crossbeam 403, the crossbeam 403 and the second slide 404 can provide support and guidance for the auxiliary rod 204, when it is necessary to insert the copper bar blank 300 between the conveyor roller 100 and the pressing belt 202, the pressing rod 203 can be moved away from the conveyor roller 100, that is, the two ends of the pressing belt 202 on the conveyor roller 100 can be separated from the conveyor roller 100, so as to provide a gap for the insertion of the copper bar blank 300, and during the initial extrusion, enough copper bar blank 300 can be present between the conveyor roller 100 and the pressing belt 202 to ensure The drawing work is carried out smoothly; after the copper busbar blank 300 is inserted, the push-pull component 405 extends and pushes the second slide 404 on the beam 403 in the direction away from the first slide 402. At this time, the distance between the corresponding pressing rod 203 and the auxiliary rod 204 increases, and the distance between the two pressing rods 203 and the distance between the two auxiliary rods 204 are shortened. The two pressing rods 203 will be pressed on the upper and lower sides of the conveyor roller 100, thereby realizing the adjustment function of the two pressing rods 203, and the elastomer 406 undergoes elastic deformation, and the pushing action of the push-pull component 405 on the auxiliary rod 204 can keep the pressing belt 202 in a taut state, so that the pressing belt 202 between the two pressing rods 203 is tightly attached to the outer wall of the conveyor roller 100; the push-pull component 405 can be a structure such as a cylinder, an oil cylinder electromagnetic pusher, etc.

[0035] Since in actual use, the pressing unit 200 and the adjusting unit 400 both have a certain gravity, the effect of gravity will cause the positions of the pressing rods 203 on the upper and lower sides of the conveyor roller 100 and the extrusion force on the conveyor roller 100 to differ, thereby causing the copper bar blank 300 on the conveyor roller 100 to be subjected to uneven forces at different positions. To avoid this phenomenon, a synchronization structure can be provided on the column 401. Through this synchronization structure, the two first slides 402 can be made to move synchronously, thereby isolating the influence of gravity. The specific synchronization structure can be adopted as follows Figure 5 In the illustrated structure, a synchronizer ring 408 is connected to the two first slides 402 via two inclined rods 409, which are symmetrically arranged relative to the rotation center of the synchronizer ring 408. When one first slide 402 moves, it pushes the synchronizer ring 408 via the corresponding inclined rod 409, which in turn drives the other first slide 402 to move synchronously, thus achieving synchronization. The fixed plate 407 is primarily provided to provide a mounting location for the synchronizer ring 408.

[0036] When the copper bar blank 300 is spirally wound on the conveyor roller 100, the copper bar blank 300 will be displaced along the axis direction of the conveyor roller 100. At this time, due to the friction, the copper bar blank 300 will drive the part of the pressing belt 202 between the two pressing rods 203 to produce an inclined displacement. In order to ensure that the pressing belt 202 moves smoothly and continuously at the specified position, the following method can be used: Figure 4 In the manner shown, both ends of the auxiliary rod 204 are provided with ribs 205 for limiting the pressing belt 202; the two ribs 205 on the two auxiliary rods 204 can be used to guide and limit the pressing belt 202 that has separated from the conveyor roller 100, so that its position remains in the specified area, that is, when part of the pressing belt 202 separates from the auxiliary rod 204 and moves onto the conveyor roller 100, it is displaced in the axial direction of the conveyor roller 100, and when the part of the pressing belt 202 is separated from the conveyor roller 100, it is restricted by the ribs 205 and reset and transmitted through the auxiliary rod 204.

[0037] Optimized on the above implementation, such as Figure 1 and Figure 8 As shown, the drawing mechanism further includes a cooling unit 500 fixed relative to the adjustment unit 400. The cooling unit 500 includes a fixed beam 501, a branch guide groove 502 installed on the fixed beam 501, and a plurality of nozzles 503 and a liquid supply pipe 504 installed on the branch guide groove 502. The plurality of nozzles 503 are arranged toward the conveyor roller to spray cooling liquid onto the outer wall of the conveyor roller 100. In the present invention, the fixed beam 501 is fixed on the column 401, and the nozzle 503 is facing the conveyor roller 100. The coolant can be introduced into the sub-guide groove 502 through the liquid supply pipe 504, and then sprayed onto the conveyor roller 100 through a plurality of nozzles 503, thereby cooling the conveyor roller 100 and reducing the frictional heat between the copper busbar blank 300 and the conveyor roller 100; the coolant can be a graphite emulsion with a concentration of 8%-12%.

[0038] Those skilled in the art will appreciate 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 the present invention is defined by the appended claims and their equivalents.

Claims

1. High-strength copper bar continuous drawing mechanism, characterized by: include: A conveying roller and a pressing unit arranged opposite thereto, wherein the pressing unit presses the copper bar blank onto the outer wall of the conveying roller; The pressing unit includes a transmission rod group and a pressing belt. The transmission rod group is provided with multiple ones corresponding to the conveying rollers. The pressing belt is wound around the outer rings of the multiple transmission rod groups and partially covered on the outer wall of the conveying roller along the circumferential direction. The pressing belt cooperates with the conveying roller to extrude and convey the copper bar blank between the two.

2. The high-strength copper busbar continuous drawing mechanism according to claim 1, characterized in that: The pressing belt is made of at least one material selected from the group consisting of steel cord core rubber, aramid fiber reinforcement, polyester-nylon blended canvas and stainless steel wire mesh core.

3. The high-strength copper busbar continuous drawing mechanism according to claim 1, characterized in that: The transmission rod groups are arranged in two opposite groups on both sides of the conveying roller in the radial direction.

4. The high-strength copper busbar continuous drawing mechanism according to claim 3, characterized in that: The transmission rod group includes a pressing rod and a sub-rod arranged in parallel. The two pressing rods are respectively arranged at the radial ends of the conveying roller and are driven to move closer to or away from the conveying roller by an adjustment unit.

5. The high-strength copper busbar continuous drawing mechanism according to claim 4, characterized in that: The adjusting unit is arranged on a column, a fixed plate is arranged on the column, and the conveying roller is rotatably mounted on the fixed plate; The adjustment unit includes a crossbeam vertically arranged with respect to the column. The crossbeam is slidably connected with the column via a first slide seat arranged at an end thereof, and the pressing rod is rotatably mounted on the first slide seat.

6. The high-strength copper busbar continuous drawing mechanism according to claim 5, characterized in that: A second slide is sleeved on the crossbeam, the second slide is slidably connected to the crossbeam, the auxiliary rod is rotatably mounted on the second slide, and the first slide is connected to the second slide via a push-pull assembly.

7. The high-strength copper busbar continuous drawing mechanism according to claim 6, characterized in that: An elastic body is provided between the first sliding seat and the end of the column.

8. The high-strength copper busbar continuous drawing mechanism according to claim 6, characterized in that: The adjusting units are provided with two corresponding to the two groups of transmission rods, and are respectively located on both sides of the fixed plate; A synchronizer ring is rotatably provided on the outer ring of the fixed disk. The synchronizer ring is connected to the two first slides respectively through two oblique rods. The two oblique rods are symmetrically provided with respect to the rotation center of the synchronizer ring.

9. The high-strength copper busbar continuous drawing mechanism according to claim 6, characterized in that: Both ends of the auxiliary rod are provided with ribs.

10. The high-strength copper busbar continuous drawing mechanism according to claim 5, characterized in that: A cooling unit is provided corresponding to the conveying roller. The cooling unit includes a fixed beam and a plurality of nozzles provided thereon. The nozzles are provided toward the conveying roller. The fixed beam is fixedly connected to the column.

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