A copper bar drawing and straightening device

Abstract

The present application relates to copper bar forming equipment technical field, this copper bar drawing straightening equipment, including straightening unit, the one side of straightening unit is provided with plastic unit, the one side of plastic unit is provided with drawing unit, the plastic unit includes shaping frame, the drawing die is arranged in the shaping frame, the one side of shaping frame is fixed with outer support, the mounting bracket is fixed on outer support symmetrically, the driving shaft is rotatably connected on mounting bracket, the front pressing wheel is fixed on driving shaft and abuts on the surface of copper bar during drawing, the present application can drive the front pressing wheel to rotate passively during drawing operation, the rear driving mechanism drives the rear support shaft and the oiling sleeve to rotate synchronously, the lubricating oil is uniformly sprayed on the surface of copper bar by the oil outlet nozzle, the linear velocity of the contact surface of oiling sleeve and copper bar is opposite to the traction direction of copper bar, the sprayed lubricating oil can be reverse rolling and spreading, the lubricating stability of drawing die is improved, the probability of copper bar drawing injury and die wear is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of copper busbar forming equipment, specifically relating to a copper busbar drawing and straightening device. Background Technology

[0002] Copper busbars, as core basic components for power transmission and electrical equipment assembly, are widely used in high and low voltage switchgear, new energy electrical equipment, rail transit, industrial power distribution and other fields. During the processing, copper busbars usually need to go through straightening, lubrication, drawing and shaping processes to ensure their dimensional accuracy, surface flatness and structural straightness, so as to meet the requirements of subsequent assembly and use.

[0003] Existing copper busbar drawing and straightening equipment typically employs a single lubrication method of fixed-point oil spraying during operation. This method can only provide simple oil supply to local areas of the copper busbar, failing to achieve uniform oil film spreading and thickness control on the surface. This easily leads to localized oil accumulation and insufficient oil in certain areas, resulting in poor lubrication uniformity and difficulty in achieving uniform coating across the entire area, thus affecting the subsequent drawing and shaping effect. Therefore, it is necessary to design a copper busbar drawing and straightening equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a copper busbar drawing and straightening device with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A copper busbar drawing and straightening device includes a straightening unit, a shaping unit on one side of the straightening unit, and a drawing unit on one side of the shaping unit. The shaping unit includes a shaping frame, a drawing die inside the shaping frame, an outer support fixed to one side of the shaping frame, and mounting frames symmetrically fixed to the outer support. A drive shaft is rotatably connected to the mounting frames, and a front pressure roller that abuts against the surface of the copper busbar during drawing is fixed to the drive shaft. A front lubrication mechanism is provided on the mounting frame. The front lubrication mechanism includes a rear support shaft rotatably connected to the mounting frame, the rear support shaft being connected to the drive shaft via a rear drive mechanism. A side groove is provided on the side wall of the rear support shaft, and an oiling sleeve is slidably connected to the rear support shaft. Protrusions evenly arranged on the inner wall of the oiling sleeve are slidably connected to the side groove. A reciprocating mechanism connecting the oiling sleeve is provided on the mounting frame. An oil outlet pipe is fixed to the mounting frame via a fixing frame, the oil outlet pipe being located between the oiling sleeve and the front pressure roller, and oil nozzles evenly arranged on the oil outlet pipe. A cleaning mechanism is provided on the mounting frame.

[0007] As a further optimization of the present invention, an oil inlet pipe is fixed on the mounting bracket, an electrically controlled valve is provided on the oil inlet pipe, and the oil inlet pipe and the oil outlet pipe are interconnected.

[0008] As a further optimization of the present invention, the rear drive mechanism includes rear pulleys fixed at both ends of the rear support shaft, and the rear pulleys mesh with the rear toothed belt.

[0009] As a further optimization of the present invention, the rear toothed belt is tensioned on the support wheel and the connecting wheel, the support wheel is rotatably connected to the mounting frame, and the connecting wheel is fixedly sleeved on the drive shaft.

[0010] As a further optimization of the present invention, the reciprocating mechanism includes a support rail fixed on the mounting frame, a pusher frame slidably connected on the support rail, and the two ends of the oiled sleeve abutting against the inner wall of the pusher frame.

[0011] As a further optimization of the present invention, the push frame is provided with a connecting slide, and a docking rod is slidably connected in the connecting slide. The docking rod is fixed on the first gear, the first gear is rotatably connected to the mounting frame, and the first gear meshes with the second gear, the second gear is fixed on one of the support wheels.

[0012] As a further optimization of the present invention, the cleaning mechanism includes a front support shaft rotatably connected to the mounting frame, a cleaning roller fixedly sleeved on the front support shaft, and front pulleys fixedly sleeved at both ends of the front support shaft, the front pulleys meshing with the front toothed belt.

[0013] As a further optimization of the present invention, the front toothed belt is tensioned on the tensioning wheel and the docking wheel, the tensioning wheel is rotatably connected to the mounting bracket, and the docking wheel is fixedly sleeved on the drive shaft.

[0014] As a further optimization of the present invention, the straightening unit includes a lower support, which is located on one side of the shaping frame. A lower support roller is rotatably connected to the lower support. Guide wheels are symmetrically arranged on the lower support. An upper support is provided on the lower support. A lower pressure cylinder is fixed on the upper support. A lower pressure frame is fixed to the output end of the lower pressure cylinder. A straightening pressure roller is rotatably connected to the lower pressure frame. The lower pressure frame is slidably connected to the upper support.

[0015] As a further optimization of the present invention, the pulling unit includes a guide frame, which is located on one side of the shaping frame. A traction trolley is rotatably connected to the guide frame. Limiting wheels symmetrically arranged on the inner wall of the traction trolley are rotatably connected to the guide frame. A clamping frame is provided on the traction trolley. A clamping cylinder is fixed inside the clamping frame. The output end of the traction hydraulic cylinder is fixedly connected to the clamping frame. The traction hydraulic cylinder is fixed in a closed shell, which is fixed on one side of the guide frame.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. During the drawing process of this invention, the copper busbar moves forward and is driven by friction to passively rotate the front pressure roller. The front pressure roller drives the rear support shaft to rotate through the drive shaft and the rear drive mechanism, which in turn drives the oiling sleeve to rotate synchronously. At the same time, the oil nozzle sprays lubricating oil evenly onto the surface of the copper busbar. The linear velocity of the contact surface between the oiling sleeve and the copper busbar is opposite to the traction direction of the copper busbar, which can roll and flatten the sprayed lubricating oil in the opposite direction. Compared with the traditional fixed oil spraying and static oiling method, it can effectively disperse the oil accumulation, spread the oil film evenly, and accurately control the oil film thickness on the surface of the copper busbar. It avoids the problems of local dry friction due to insufficient oil and local excessive oil accumulation, greatly improves the lubrication stability of the drawing die, and reduces the probability of copper busbar drawing damage and die wear.

[0018] 2. In the rear gear belt drive process of this invention, the support wheel rotates synchronously and drives the coaxially fixed second gear to rotate. The second gear meshes and drives the first gear to rotate. The first gear drives the eccentrically arranged docking rod to perform circular motion. The docking rod slides adaptively inside the connecting slide, converting the circular motion into linear reciprocating power, which in turn drives the push frame to slide stably back and forth along the support rail. The top of the push frame pushes the oiling sleeve to slide back and forth axially, so that the oiling sleeve continuously rolls in the opposite direction to apply oil while simultaneously moving back and forth axially, thus coating the copper busbar surface with a full-area reciprocating coating. This effectively compensates for the uneven coating and corner omissions that exist in single rotary oiling, ensuring that the oil film is uniform and consistent throughout the entire section of the copper busbar, providing reliable lubrication for the continuous and stable drawing and shaping process.

[0019] 3. In this invention, while the front pressure roller rotates passively, the docking roller at the end of the drive shaft rotates synchronously. Through the front toothed belt, the front pulley, the front support shaft, and the cleaning roller rotate passively. The surface linear velocity of the cleaning roller is opposite to the copper busbar conveying direction. Before the copper busbar enters the oiling station, the upper and lower surfaces of the copper busbar are pre-cleaned by rolling, which can thoroughly remove impurities attached to the surface of the copper busbar. Pre-removal of impurities can effectively prevent hard particles from being trapped in the lubricating oil film and entering the drawing die, preventing impurities from squeezing and scratching the surface of the finished copper busbar, wearing the die cavity and the front pressure roller, eliminating defects such as die jamming and workpiece crushing, significantly improving the quality of the finished copper busbar, and effectively extending the service life of the die and equipment transmission components. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the drawing unit in this invention;

[0022] Figure 3 This is a schematic diagram of the shaping unit in this invention;

[0023] Figure 4 This is a schematic diagram showing the position of the front pressure roller in this invention;

[0024] Figure 5 This is a schematic diagram of the pre-lubrication mechanism in this invention;

[0025] Figure 6 This is a schematic diagram of the reciprocating mechanism in this invention;

[0026] Figure 7 This is a schematic diagram of the cleaning mechanism in this invention.

[0027] In the diagram: 1. Straightening unit; 2. Shaping unit; 3. Pulling unit; 11. Lower support; 12. Lower support roller; 13. Guide wheel; 14. Upper support; 15. Lower pressure cylinder; 16. Lower pressure frame; 17. Straightening pressure roller; 21. Shaping frame; 22. Outer support; 23. Mounting frame; 24. Front lubrication mechanism; 25. Drive shaft; 26. Front pressure roller; 27. Cleaning mechanism; 31. Guide frame; 32. Traction trolley; 33. Limiting wheel; 34. Clamping frame; 35. Traction hydraulic cylinder; 36. Enclosed shell; 240. Rear drive mechanism; 241. Rear support shaft; 242. Side groove; 243. Oiling sleeve; 244. Reciprocating mechanism; 245. Fixing frame; 246. Oil outlet pipe; 247. Oil outlet nozzle; 248. Electrically controlled valve; 249. Oil inlet pipe; 2401. Rear pulley; 2402. Rear toothed belt; 2403. Support wheel; 2404. Connecting wheel; 2441. Support rail; 2442. Push frame; 2443. Connecting slide; 2444. Connecting rod; 2445. First gear; 2446. Second gear; 270. Scraping roller; 271. Front support shaft; 272. Front pulley; 273. Front toothed belt; 274. Tensioner; 275. Connecting wheel. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0029] Example: Please refer to Figures 1-7 A copper busbar drawing and straightening device includes a straightening unit 1 for pre-straightening and correcting bending deformation of the copper busbar. A shaping unit 2 is provided on one side of the straightening unit 1 for shaping the cross section and finishing the dimensions of the straightened copper busbar. A drawing unit 3 is provided on one side of the shaping unit 2 for providing continuous axial traction force and driving the copper busbar to be continuously conveyed. The drawing unit 3 is used to clamp and fix one end of the copper busbar and provide stable traction force to drive the copper busbar to move forward continuously. The forward-moving copper busbar first enters the straightening unit 1, where the straightening unit 1 performs a straightening process on the coiled copper busbar. Then, it passes through the shaping unit 2 and is forcibly shaped under the action of drawing traction.

[0030] The shaping unit 2 includes a shaping frame 21 to ensure the stability of the shaping station. The shaping frame 21 is equipped with a drawing die for constraining the cross-section of the copper busbar and realizing cold drawing shaping. (Both the shaping frame 21 and the drawing die are existing technologies and will not be described in detail here.) The copper busbar passing through the drawing die will be forcibly drawn and shaped at the forming opening of the die. An external support 22 is fixed on the side of the shaping frame 21 near the straightening unit 1. A mounting frame 23 is symmetrically fixed on the external support 22. A drive shaft 25 is rotatably connected to the mounting frame 23. A front pressure roller 26 is fixed on the drive shaft 25 and abuts against the surface of the copper busbar during drawing. The front pressure roller 26 is used to support the copper busbar and provide power by relying on friction. A front lubrication mechanism 24 is provided on the mounting frame 23 for uniformly applying lubricating oil to the surface of the copper busbar and reducing the friction loss during drawing.

[0031] After being straightened by the straightening unit 1, the copper busbar enters the shaping unit 2. The front pressure roller 26 fits against the upper and lower surfaces of the copper busbar to form a flexible support, preventing the copper busbar from drooping, shifting, or swaying. Under the frictional force of the continuous forward movement of the copper busbar, the front pressure roller 26 drives the drive shaft 25 to rotate passively, providing transmission power to the front lubrication mechanism 24. The front lubrication mechanism 24 applies lubricating oil to the surface of the copper busbar. After being coated with oil, the copper busbar smoothly passes through the drawing die inside the shaping frame 21, completing the precise shaping of the cross-section.

[0032] Please see Figures 1-3 The straightening unit 1 includes a lower support 11 for stabilizing the straightening position. The lower support 11 is located on one side of the shaping frame 21. A lower support roller 12 for supporting the copper busbar and reducing conveying friction is rotatably connected in the lower support 11. Guide wheels 13 for lateral limiting of the copper busbar and preventing conveying deviation are symmetrically arranged on the lower support 11. An upper support 14 is fixed on the lower support 11. A lower pressure cylinder 15 for providing downward straightening power is fixed on the upper support 14. A lower pressure frame 16 is fixed at the output end of the lower pressure cylinder 15. A straightening pressure roller 17 is rotatably connected to the lower pressure frame 16 through a bearing. The lower pressure frame 16 is slidably connected to the upper support 14 to ensure the straightness accuracy of downward straightening.

[0033] After the coiled copper busbar to be processed is conveyed to the straightening unit 1, multiple sets of lower support rollers 12 simultaneously support the copper busbar, stably supporting it and reducing conveying friction resistance; the guide wheels 13 on both sides limit the left and right movement of the copper busbar to prevent lateral deviation or offset during conveying; at the same time, the lower pressure cylinder 15 extends and pushes the lower pressure frame 16 down along the upper support 14, so that the straightening pressure roller 17 presses against the upper surface of the copper busbar, forming an upper and lower pressure structure with the lower support rollers 12. During the process of the copper busbar being moved by the pulling traction force, the bending and warping deformation of the copper busbar is forcibly corrected, completing the pre-straightening operation before pulling, and ensuring the reference accuracy of subsequent shaping processing.

[0034] Please see Figures 1-2The drawing unit 3 includes a guide frame 31, which is located on one side of the shaping frame 21. A traction trolley 32 for carrying clamping components and performing reciprocating drawing operations is rotatably connected to the guide frame 31. Limiting wheels 33 are symmetrically arranged on the inner wall of the traction trolley 32. The limiting wheels 33 are rotatably connected to the guide frame 31 for limiting and guiding, and preventing the traction trolley 32 from deviating or jamming. A clamping frame 34 is fixed on the traction trolley 32. A clamping cylinder for providing clamping power and firmly clamping the copper busbar head is fixed inside the clamping frame 34. The output end of the traction hydraulic cylinder 35 for providing continuous drawing traction force is fixedly connected to the clamping frame 34. The traction hydraulic cylinder 35 is fixed in the closed shell 36, which is fixed on one side of the guide frame 31.

[0035] Before forming, the copper busbar head is pre-treated and inserted into the equipment. The traction trolley 32 moves along the guide frame 31 to the feeding station. The clamping cylinder inside the clamping frame 34 is activated to stably clamp the copper busbar head. Then, the traction hydraulic cylinder 35 outputs a constant pulling force, pulling the traction trolley 32 to slide smoothly along the guide frame 31 through the limit wheel 33, providing continuous and uniform axial pulling force for the entire equipment, ensuring that the entire process is synchronized and continuous.

[0036] Please see Figures 5-7 The pre-lubrication mechanism 24 includes a rear support shaft 241 rotatably connected to the mounting bracket 23. The rear support shaft 241 is connected to the drive shaft 25 via a rear drive mechanism 240. Side grooves 242 are evenly distributed on the side wall of the rear support shaft 241. An oiling sleeve 243 for reverse rolling of lubricating oil, smoothing the oil film, and controlling the coating thickness is slidably connected to the rear support shaft 241. Evenly distributed protrusions on the inner wall of the oiling sleeve 243 are slidably connected in the side grooves 242. A reciprocating mechanism 244 is provided on the mounting bracket 23 to connect the oiling sleeve 243. The reciprocating mechanism 244 can drive the oiling sleeve 243 to slide back and forth along its axis while rotating, eliminating blind spots in the oiling process. Multiple fixed brackets 244 are provided on the mounting bracket 23. 45. An oil outlet pipe 246 for conveying lubricating oil is fixed on the fixed frame 245. The oil outlet pipe 246 is located between the oiling sleeve 243 and the front pressure roller 26, and can supply oil in front of the oiling station. Oil outlet nozzles 247 are evenly arranged on the oil outlet pipe 246 facing the copper busbar. The oil outlet nozzles 247 can spray lubricating oil evenly onto the surface of the copper busbar. An oil inlet pipe 249 for connecting to the external oil supply pipeline and introducing the lubricating medium is fixed on the mounting frame 23. The oil inlet pipe 249 is connected to the lubricating oil delivery pipeline and provides lubricating material for the front lubrication mechanism 24. An electric control valve 248 for controlling the oil circuit opening and closing and starting and stopping the lubrication operation is installed on the oil inlet pipe 249. The oil inlet pipe 249 and the oil outlet pipe 246 are interconnected to realize the stable delivery of lubricating oil.

[0037] During equipment operation, the electric control valve 248 is opened, and lubricating oil is introduced into the oil outlet pipe 246 through the oil inlet pipe 249, and then evenly sprayed onto the surface of the copper busbar through each oil outlet nozzle 247. Under the transmission action of the rear drive mechanism 240, the rear support shaft 241 rotates synchronously, and drives the oiling sleeve 243 to rotate through the cooperation of the side slot 242 and the oiling sleeve 243, so as to roll and spread the sprayed lubricating oil, and accurately control the thickness of the oil film. At the same time, the reciprocating mechanism 244 drives the oiling sleeve 243 to slide axially back and forth, eliminating local oiling blind spots, so that the oil film on the surface of the copper busbar is evenly covered, providing sufficient lubrication for subsequent mold drawing and shaping, reducing frictional resistance, and avoiding copper busbar scratches and mold wear.

[0038] Please see Figures 5-7 The rear drive mechanism 240 includes rear pulleys 2401 fixed at both ends of the rear support shaft 241. The two rear pulleys 2401 are respectively meshed on two rear toothed belts 2402. The rear toothed belts 2402 are tensioned on the support wheel 2403 and the connecting wheel 2404. The support wheel 2403 is rotatably connected to the mounting bracket 23. The connecting wheel 2404 is fixedly sleeved on the drive shaft 25 and is used to transmit the passive rotational power of the drive shaft 25 to realize the linkage operation of the entire lubrication mechanism.

[0039] The forward movement of the copper busbar can drive the front pressure roller 26 and drive shaft 25 to rotate passively. The drive shaft 25 drives the connecting wheel 2404 to rotate synchronously, which in turn drives the tensioned rear toothed belt 2402 to rotate. The rear toothed belt 2402 maintains a tensioned transmission state with the support wheel 2403, and synchronously drives the rear pulleys 2401 at both ends to rotate, ultimately driving the rear support shaft 241 to rotate stably. The entire process is a pure friction passive transmission, which does not require an additional power source and provides stable transmission power for the oiling sleeve 243 to rotate and apply oil.

[0040] Please see Figures 5-7 The reciprocating mechanism 244 includes a support rail 2441 fixed on the mounting frame 23. A pusher frame 2442 is slidably connected to the support rail 2441. The two ends of the oiling sleeve 243 abut against the inner wall of the pusher frame 2442 and can push the oiling sleeve 243 to achieve axial reciprocating motion. A connecting slide 2443 is provided on the pusher frame 2442. A docking rod 2444 is slidably connected in the connecting slide 2443. The docking rod 2444 is eccentrically fixed on the first gear 2445. The first gear 2445 is rotatably connected to the mounting frame 23 through a bearing. The first gear 2445 meshes with the second gear 2446. The second gear 2446 is fixed on one of the support wheels 2403 to achieve synchronous operation with the transmission.

[0041] When the support wheel 2403 rotates, the toothed belt 2402 drives the coaxially fixed second gear 2446 to rotate synchronously, which in turn drives the first gear 2445 to rotate through gear meshing transmission. The first gear 2445 drives the eccentrically mounted docking rod 2444 to perform circular motion. The docking rod 2444 slides in the connecting slide 2443, converting the circular motion into linear reciprocating power, which pushes the push frame 2442 to slide back and forth stably along the support rail 2441. The push frame 2442 continuously pushes the oiling sleeve 243, so that the oiling sleeve 243 rotates to apply oil while simultaneously performing axial reciprocating motion, which greatly improves the uniformity of lubricant coating.

[0042] Please see Figures 4-7 The mounting frame 23 is equipped with a cleaning mechanism 27 for pre-cleaning and removing impurities from the surface of the copper busbar. The cleaning mechanism 27 includes a front support shaft 271 rotatably connected to the mounting frame 23. A cleaning roller 270 for reverse rolling scraping to remove copper powder and hard impurities is fixedly sleeved on the front support shaft 271. Front pulleys 272 are fixedly sleeved at both ends of the front support shaft 271. The front pulleys 272 mesh with a front toothed belt 273. The front toothed belt 273 is tensioned on a tensioning wheel 274 and a connecting wheel 275. The tensioning wheel 274 is rotatably connected to the mounting frame 23. The connecting wheel 275 is fixedly sleeved on the drive shaft 25 to transmit passive power to the drive shaft 25 and realize synchronous operation of the cleaning process.

[0043] When the drive shaft 25 rotates, it drives the end docking wheel 275 to rotate synchronously. Relying on the tensioning and limiting effect of the tensioning wheel 274, it drives the front toothed belt 273 to circulate and then drives the front support shaft 271 and the cleaning roller 270 to rotate passively through the front pulley 272. Moreover, the linear velocity direction of the part of the cleaning roller 270 that contacts the copper busbar is opposite to the direction of copper busbar conveying. Before the copper busbar enters the lubrication station, it rolls and scrapes the upper and lower surfaces of the copper busbar to remove impurities from the surface of the copper busbar, so as to achieve cleaning before lubrication and avoid impurities from mixing with oil stains, scratching the copper busbar or wearing the drawing die.

[0044] It should be noted that, in the use of this copper busbar drawing and straightening equipment, the material head is first processed at the end of the copper busbar to be processed, and then the material head is inserted into the clamping frame 34. The clamping cylinder inside the clamping frame 34 clamps the copper busbar material head, and the traction hydraulic cylinder 35 provides a stable and continuous traction force, driving the copper busbar to move forward at a uniform speed, so that the copper busbar continuously and stably passes through the drawing die inside the shaping frame 21. The cross-section finishing and cold drawing shaping are completed by the constraint of the die hole diameter. During the traction drawing process, the multiple sets of lower support rollers 12 inside the lower support 11 provide stable support for the bottom of the copper busbar, and the guide wheels 13 on both sides limit the left and right of the copper busbar to prevent lateral deviation and deviation during the conveying process. The lower pressure cylinder 15 on the upper support 14 extends and drives the lower pressure frame 16 to slide downward, so that the straightening pressure roller 17 is stably pressed against the upper surface of the copper busbar, and the copper busbar in the bent and coiled state is subjected to forced pressure straightening treatment to achieve the preliminary straightening of the copper busbar before drawing, and to ensure the basic straightness of the copper busbar entering the shaping process.

[0045] During the continuous pulling and conveying process, the front pressure roller 26 always abuts against the upper and lower surfaces of the copper busbar, providing conveying support for the copper busbar and passively driving the drive shaft 25 to rotate by the static friction generated by the forward movement of the copper busbar. No additional drive motor is required, achieving pure passive follow-up operation. During the rotation of the drive shaft 25, the connecting wheel 2404 at the end rotates synchronously, which in turn drives the rear toothed belt 2402 of the tension assembly to circulate. The rear toothed belt 2402 drives the rear support shaft 241 to rotate synchronously through the rear pulley 2401. The rear support shaft 241 drives the oiling sleeve 243 to rotate synchronously through the snap-fit ​​engagement between the side groove 242 on the side wall and the protrusion on the inner wall of the oiling sleeve 243. Moreover, the linear velocity direction of the oiling sleeve 243 in contact with the copper busbar is opposite to the traction and conveying direction of the copper busbar.

[0046] During the continuous traction of the copper busbar, the electronic control valve 248 is opened, and the lubricating oil is introduced into the oil outlet pipe 246 through the oil inlet pipe 249, and evenly sprayed onto the copper busbar surface to be shaped through the evenly arranged oil outlet nozzles 247; the reverse rotating oiling sleeve 243 can further roll and spread the sprayed lubricating oil, so that the oil film evenly covers the surface of the copper busbar. At the same time, the reverse rolling action limits the thickness of the oil film, avoiding excessive accumulation of lubricating oil, which not only ensures the lubrication effect of the mold, but also greatly reduces the risk of slippage during subsequent clamping.

[0047] During the transmission process of the rear toothed belt 2402, the support wheel 2403 rotates synchronously with the toothed belt, thereby driving the coaxially fixed second gear 2446 to rotate. The second gear 2446 meshes with and drives the first gear 2445 to rotate. The first gear 2445 drives the eccentrically arranged docking rod 2444 to perform circumferential motion. The docking rod 2444 slides within the connecting slide 2443, thereby driving the push frame 2442 to perform stable axial reciprocating linear motion along the support rail 2441. The push frame 2442 pushes and pulls the oiling sleeve 243 back and forth, so that the oiling sleeve 243 continuously rotates in the opposite direction to roll oil while superimposing axial reciprocating sliding motion, further eliminating local oiling blind spots, greatly improving the overall uniformity of lubricant coating, and ensuring uniform lubrication throughout the entire area before the copper busbar enters the drawing die.

[0048] While the front pressure roller 26 rotates passively, the docking roller 275 at the end of the drive shaft 25 rotates synchronously. Through the front toothed belt 273, it drives the front pulley 272 and the front support shaft 271 to rotate, driving the cleaning roller 270 to passively follow. The linear velocity of the cleaning roller 270 in contact with the copper busbar surface is opposite to the copper busbar conveying direction. The cleaning roller 270 can pre-scrape the surface of the copper busbar before it enters the lubrication station, thoroughly removing impurities attached to the surface of the copper busbar. On the one hand, it prevents hard impurities from being carried between the pressure roller and the copper busbar, damaging the surface of the copper busbar and wearing the front pressure roller 26. On the other hand, it prevents impurities from mixing into the lubricating oil film and entering the drawing die with the copper busbar, effectively avoiding wear, jamming, and damage to the die cavity by impurities, and greatly improving the quality of the finished copper busbar and the service life of the die.

[0049] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A copper busbar drawing and straightening device, comprising a straightening unit (1), characterized in that: A shaping unit (2) is provided on one side of the straightening unit (1), and a drawing unit (3) is provided on one side of the shaping unit (2); the shaping unit (2) includes a shaping frame (21), a drawing die is provided inside the shaping frame (21), an outer support (22) is fixed on one side of the shaping frame (21), a mounting frame (23) is symmetrically fixed on the outer support (22), a drive shaft (25) is rotatably connected to the mounting frame (23), a front pressure roller (26) that abuts against the surface of the copper busbar during drawing is fixed on the drive shaft (25), and a front lubrication mechanism (24) is provided on the mounting frame (23). The front lubrication mechanism (24) includes a rear support shaft (241) rotatably connected to the mounting frame (23). The drive shaft (25) is connected via the rear drive mechanism (240). The side wall of the rear support shaft (241) is provided with a side groove (242). An oiling sleeve (243) is slidably connected to the rear support shaft (241). The protrusions evenly arranged on the inner wall of the oiling sleeve (243) are slidably connected in the side groove (242). A reciprocating mechanism (244) for connecting the oiling sleeve (243) is provided on the mounting frame (23). An oil outlet pipe (246) is fixed on the mounting frame (23) via a fixing frame (245). The oil outlet pipe (246) is located between the oiling sleeve (243) and the front pressure roller (26). Oil nozzles (247) are evenly arranged on the oil outlet pipe (246). A cleaning mechanism (27) is provided on the mounting frame (23). The rear drive mechanism (240) includes rear pulleys (2401) fixed at both ends of the rear support shaft (241), the rear pulleys (2401) meshing with the rear toothed belt (2402), the rear toothed belt (2402) being tensioned on the support wheel (2403) and the connecting wheel (2404), the support wheel (2403) being rotatably connected to the mounting bracket (23), and the connecting wheel (2404) being fixedly sleeved on the drive shaft (25); The reciprocating mechanism (244) includes a support rail (2441) fixed on the mounting frame (23), a pusher frame (2442) slidably connected on the support rail (2441), and the two ends of the oiling sleeve (243) abutting against the inner wall of the pusher frame (2442). The pusher frame (2442) is provided with a connecting slide (2443), and a docking rod (2444) is slidably connected in the connecting slide (2443). The docking rod (2444) is fixed on the first gear (2445), the first gear (2445) is rotatably connected to the mounting frame (23), and the first gear (2445) meshes with the second gear (2446). The second gear (2446) is fixed on one of the support wheels (2403).

2. The copper busbar drawing and straightening equipment according to claim 1, characterized in that: An oil inlet pipe (249) is fixed on the mounting bracket (23), and an electric control valve (248) is installed on the oil inlet pipe (249). The oil inlet pipe (249) and the oil outlet pipe (246) are connected to each other.

3. The copper busbar drawing and straightening equipment according to claim 1, characterized in that: The cleaning mechanism (27) includes a front support shaft (271) rotatably connected to the mounting frame (23), a cleaning roller (270) fixedly sleeved on the front support shaft (271), and front pulleys (272) fixedly sleeved at both ends of the front support shaft (271), with the front pulleys (272) meshing on the front toothed belt (273).

4. The copper busbar drawing and straightening equipment according to claim 3, characterized in that: The front toothed belt (273) is tensioned on the tensioning wheel (274) and the docking wheel (275). The tensioning wheel (274) is rotatably connected to the mounting bracket (23), and the docking wheel (275) is fixedly sleeved on the drive shaft (25).

5. The copper busbar drawing and straightening equipment according to claim 1, characterized in that: The straightening unit (1) includes a lower support (11), which is located on one side of the shaping frame (21). A lower support roller (12) is rotatably connected in the lower support (11). Guide wheels (13) are symmetrically arranged on the lower support (11). An upper support (14) is arranged on the lower support (11). A lower pressure cylinder (15) is fixed on the upper support (14). A lower pressure frame (16) is fixed at the output end of the lower pressure cylinder (15). A straightening pressure roller (17) is rotatably connected on the lower pressure frame (16). The lower pressure frame (16) is slidably connected to the upper support (14).

6. The copper busbar drawing and straightening equipment according to claim 1, characterized in that: The pulling unit (3) includes a guide frame (31), which is located on one side of the shaping frame (21). A traction trolley (32) is rolled on the guide frame (31). Limiting wheels (33) symmetrically arranged on the inner wall of the traction trolley (32) are rolled on the guide frame (31). A clamping frame (34) is provided on the traction trolley (32). A clamping cylinder is fixed inside the clamping frame (34). The clamping frame (34) is fixedly connected to the output end of the traction hydraulic cylinder (35). The traction hydraulic cylinder (35) is fixed in the closed shell (36). The closed shell (36) is fixed on one side of the guide frame (31).

Images