A new energy enameled flat wire drawing forming positioning guide device

Abstract

This invention belongs to the field of enameled flat wire processing technology, specifically a drawing and positioning guide device for enameled flat wire used in new energy applications. It includes a drawing module, where the enameled flat wire raw material is drawn and cold-deformed to obtain the final enameled flat wire. The positioning guide module provides positioning and guidance during the drawing process. Based on the elastic force of a torsion spring, the invention ensures that the secondary guide wheel adheres to the upper and lower sides of the enameled flat wire, adaptively conforming to the shape of the wire. This allows the secondary guide wheel to apply flexible floating pressure to the upper and lower sides of the wire, breaking the surface stress lock-in state, promoting micro-slippage of the cold-deformed lattice, and uniformly releasing local residual compressive stress on the surface. Furthermore, the transverse guide wheel adheres to the left and right sides of the enameled flat wire via an elastic ring. During the wire's movement, the elastic ring applies lateral flexible deflection to the left and right sides of the wire, balancing the asymmetrical shear stress on both sides.

Description

Technical Field

[0001] This invention belongs to the field of enameled flat wire processing technology, specifically a drawing, forming, positioning, and guiding device for enameled flat wires used in new energy applications. Background Technology

[0002] New energy enameled flat wire is a special electromagnetic wire used in high-requirement electrical equipment such as drive motors for new energy vehicles. Its core is that the copper conductor is coated with multiple layers of insulating varnish to form a rectangular cross-section wire. Unlike traditional round enameled wire, the new energy enameled flat wire is characterized by its rectangular cross-section. The rectangular cross-section allows for a more compact winding arrangement, significantly improving the slot fill factor. More copper can be filled in the same space, increasing the power density of the motor. In addition, the flat structure increases the heat dissipation area, improves the skin effect, and reduces high-frequency losses.

[0003] Most existing positioning and guiding devices for cold drawing of enameled flat wire in new energy generally use multiple sets of guide wheels to constrain the flat wire in four directions. The bottom surface of the flat wire is supported by the lower support wheel and the top surface is pressed by the upper pressure wheel to achieve the limiting and shaping in the thickness direction. At the same time, the left and right vertical guide wheels clamp the two sides of the flat wire to complete the lateral centering correction, width control and anti-deviation limiting, so that the flat wire maintains a straight and twist-free stable posture during the process and is fed into the drawing die in a coaxial and centered state to complete a single drawing operation. Then, it is shaped step by step through multiple guiding and drawing processes to finally process to the target cross-sectional size.

[0004] However, when new energy enameled flat wire is processed using the above method, the flat wire is forcibly straightened and rigidly constrained in the guiding device, and cold working plastic deformation will continue to occur. A large amount of uneven cold drawing residual stress will easily accumulate inside the wire. When the flat wire leaves the rigid constraint of the guide wheel group and enters the free stroke section, the internal residual stress will be released and trigger elastic rebound, causing the wire to have deformation problems such as overall bending, plate arching, and lateral warping. The deformation of the wire will directly destroy the wire entry alignment of the next drawing die, causing the flat wire to be unable to maintain precise coaxial matching with the positioning guide component and the drawing die hole in the subsequent continuous drawing process, resulting in deviation, skewed posture and other defects, affecting the stability of continuous guiding of enameled flat wire and the forming dimensional accuracy, reducing the quality of finished wire and production yield.

[0005] Therefore, the present invention provides a positioning and guiding device for drawing and forming enameled flat wire for new energy applications. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is: a positioning and guiding device for drawing and forming enameled flat wire for new energy, comprising... In the drawing module, the enameled flat wire material is pulled inside and undergoes cold deformation to obtain the final enameled flat wire. The positioning and guiding module can achieve positioning and guiding of the enameled flat wire during the drawing process as it moves within the drawing module. The stress relief module can eliminate the stress caused by cold deformation of enameled flat wire during the drawing process. The stress relief module includes a horizontal stress relief unit, a transverse stress relief unit, and a centering unit. The horizontal stress relief unit can eliminate the horizontal stress of the enameled flat wire. The horizontal stress relief unit includes multiple support plates evenly distributed on the positioning guide module. Each pair of horizontally symmetrical support plates is rotatably connected to a secondary guide wheel. Each pair of support plates is rotatably inserted with a mounting rod, and the mounting rod is fixedly connected to the positioning guide module. A torsion spring is provided at the connection between the mounting rod and the support plate.

[0008] Preferably, the lateral stress relief unit can eliminate the lateral stress of the enameled flat wire. The lateral stress relief unit includes a mounting plate disposed on the inner side of the support plate. A guide plate is fixedly connected to the opposite sides of every two mounting plates. A sliding seat is slidably connected inside the guide plate. A connecting end is slidably inserted inside one of the sliding seats. The connecting end and the opposite side of the other sliding seat are rotatably connected to a lateral guide wheel.

[0009] Preferably, the transverse force dissipation unit further includes an elastic ring fixedly sleeved on the surface of the transverse guide wheel, and another sliding seat and the surface of the connecting end are fixedly connected to a connecting frame. A damping spring is fixedly connected to one side of the connecting frame, and a fine-tuning component is provided on one side of the damping spring.

[0010] Preferably, the fine-tuning component includes a movable plate fixedly connected to one end of the damping spring, and the surfaces of the two movable plates are threaded together with a bidirectional threaded rod. One end of the bidirectional threaded rod is fixedly connected to a motor, which drives the bidirectional threaded rod to rotate, thereby realizing the opposite movement of the two movable plates and fine-tuning the position of the transverse guide wheel.

[0011] Preferably, the centering unit includes a rotating rod rotatably connected to a transverse guide wheel via a pulley and a belt, and an eccentric wheel is fixedly connected to the surface of the rotating rod. One end of the rotating rod is rotatably mounted on a bearing plate via a bearing seat. A guide frame is fixedly connected to one side of the upper surface of the bearing plate. A return spring is fixedly connected inside the guide frame. One end of the return spring is fixedly connected to a pressing plate, and the pressing plate is slidably connected to the guide frame. The outer side of the pressing plate is parallel to the outer arc surface of the elastic ring.

[0012] Preferably, the positioning and guiding module includes a mounting frame, and two symmetrically arranged mounting brackets are fixedly connected inside the mounting frame by bolts. The two mounting brackets are rotatably connected by bearing seats to an upper pressure roller and a lower support roller. The surfaces of the upper pressure roller and the lower support roller are provided with guide grooves that are adapted to the width of the enameled flat wire, and the flipping and limiting of the enameled flat wire is realized based on the two inner walls of the guide grooves.

[0013] Preferably, the bearing plate is fixedly connected to one of the mounting brackets, the support plate is rotatably connected to the corresponding mounting bracket via a mounting rod and a torsion spring, and the mounting rod is fixedly connected to the mounting bracket. The movable plate is slidably connected to the mounting bracket, and the bidirectional threaded rod is rotatably connected to the mounting bracket via a bearing seat. The motor is fixedly installed inside the mounting bracket.

[0014] Preferably, the positioning and guiding module further includes two hollow boxes fixedly connected to both sides of one of the mounting brackets, and a sliding plate is slidably connected inside the hollow box. A movable plate is fixedly connected to one end of the sliding plate, and the movable plate is slidably connected to the other mounting bracket. Movable grooves are opened on both sides of the other mounting bracket, and the movable plate is slidably connected inside the sliding groove. An elastic telescopic rod is fixedly connected inside the sliding groove, and the elastic telescopic rod is fixedly connected to the movable plate.

[0015] Preferably, a sealing ring is provided at the contact point between the sliding plate and the inner wall of the hollow box to achieve sealed sliding between the sliding plate and the hollow box. One of the hollow boxes is connected to an external air pump through a circular pipe, and an exhaust pipe is provided at one edge of the inner side of one of the hollow boxes. Both the circular pipe and the exhaust pipe are provided with a one-way valve inside.

[0016] Preferably, the pulling module includes a plurality of laterally arranged pulling units; One of the drawing units includes a circular upper die and a circular lower die, which are arranged perpendicularly to each other. This allows the enameled flat wire to be pre-compressed during the drawing process, causing it to be shaped into a flat elliptical cross section. Other drawing units include a rectangular upper die and a rectangular lower die, which are arranged perpendicularly. A rotating flat wire drawing die is used, which can reduce the thickness and fine-tune the width of the enameled flat wire after pre-extrusion, gradually narrow the sides and regularize the upper and lower planes to produce bare copper flat wire blanks.

[0017] The beneficial effects of this invention are as follows: 1. The positioning and guiding device for drawing and forming enameled flat wire for new energy applications, as described in this invention, is based on the synergy of multiple components in a stress-relief module. During the drawing and guiding process of the enameled flat wire for new energy applications, the positioning and guiding module utilizes the elastic force of a torsion spring to ensure that the secondary guide wheel adheres to the upper and lower sides of the enameled flat wire. This adherence is adaptive to the shape of the enameled flat wire, allowing the secondary guide wheel to apply flexible floating pressure to the upper and lower sides of the flat wire. This breaks the surface stress lock-in state, promotes micro-slippage of the cold-deformed lattice, and uniformly releases the local residual compressive stress on the surface. Furthermore, the transverse guide rollers are attached to the left and right sides of the enameled flat wire through the elastic ring. During the enameled flat wire's movement, the elastic ring applies lateral flexible deflection to the left and right sides of the enameled flat wire, balancing the asymmetrical shear stress on the left and right sides, offsetting the internal stress of cross-section torsion, and suppressing parallelogram distortion. This achieves stress elimination around the enameled flat wire during the drawing process, preventing the residual internal stress from being released and triggering elastic rebound after the flat wire leaves the rigid constraint of the guide roller group and enters the free stroke section, which would cause deformation problems such as overall bending, board arching, and lateral warping of the wire. 2. The enameled flat wire drawing and forming positioning and guiding device for new energy applications described in this invention is based on the cooperation of elastic rings, damping springs and guide grooves. When the enameled flat wire is subjected to the vertical stress relief pressure of the auxiliary guide wheels, the two horizontal guide wheels move left and right, squeezing the elastic rings and damping springs. The horizontal component force generated by the downward pressure of the upper and lower auxiliary guide wheels is offset by the elastic force applied by the damping springs symmetrically arranged on both sides, thereby achieving elastic yielding and reverse equal force cancellation. This avoids the flat wire being hard-locked on one side, overheating due to friction on one side, and burrs generated by edge extrusion. It ensures that the left and right limits are always centered and does not damage the original centering guide. Furthermore, by constraining the upper and lower sides of the enameled flat wire through the two sides of the guide groove, while relaxing the lateral shear stress, it prevents the flat wire from flipping over, warping, and skewing the cross section, ensuring that the horizontal posture of the wide face remains unchanged. 3. The enameled flat wire drawing and positioning guide device for new energy applications described in this invention, based on the coordination of multiple components in the centering unit, ensures that when the enameled flat wire is subjected to pressure and undergoes lateral displacement, it remains in close contact with one of the lateral guide wheels. Friction drives the lateral guide wheel to rotate, which in turn drives the rotating rod and eccentric wheel to rotate via a pulley. As the lateral guide wheel rotates, the eccentric wheel pushes the extrusion plate to slide, compressing the return spring. Based on the spring force, an elastic force is applied to the extrusion plate, acting on the enameled flat wire. This achieves fine-tuning of the lateral position of the enameled flat wire, avoiding unilateral guidance and lateral wear caused by the enameled flat wire always being in contact with one side of the elastic ring, while also preventing axial micro-twisting of the wire due to unilateral frictional resistance differences. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is an overall diagram of the present invention; Figure 2 This is a structural diagram of the pull-out module, positioning and guiding module, and stress relief module in this invention; Figure 3 This is a structural diagram of the positioning and guiding module and the stress relief module in this invention; Figure 4 This is a structural diagram of the horizontal stress-relief unit, the transverse stress-relief unit, and the mounting frame in this invention; Figure 5 This is a structural diagram of the transverse force-dissipating unit, the horizontal force-dissipating unit, and the fine-tuning component in this invention; Figure 6 This is a structural diagram of the transverse force-dissipating unit and the fine-tuning component in this invention; Figure 7 This is a structural diagram of the transverse stress-relieving unit and the centering unit in this invention; Figure 8 This is a structural diagram of the transverse guide wheel, elastic ring, and centering unit in this invention; Figure 9 This is a structural diagram of the circular upper mold, circular lower mold, and positioning guide module in this invention.

[0020] In the diagram: 1. Pulling module; 11. Pulling unit; 111. Circular upper die; 112. Circular lower die; 113. Rectangular upper die; 114. Rectangular lower die; 2. Positioning and guiding module; 21. Mounting frame; 22. Mounting bracket; 23. Upper pressure roller; 24. Lower support roller; 25. Guide groove; 26. Hollow box; 27. Sliding plate; 28. Movable plate; 29. ​​Elastic telescopic rod; 3. Stress relief module; 31. Horizontal stress relief unit; 311. Support plate; 312. Secondary guide... 313. Wheel; 32. Mounting rod; 32. Lateral force dissipation unit; 321. Mounting plate; 322. Guide plate; 323. Sliding seat; 324. Connecting end; 325. Lateral guide wheel; 326. Elastic ring; 327. Damping spring; 328. Connecting frame; 33. Centering unit; 331. Rotating rod; 332. Eccentric wheel; 333. Bearing plate; 334. Guide frame; 335. Return spring; 336. Extrusion plate; 4. Fine-tuning assembly; 41. Moving plate; 42. Bidirectional threaded rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 9 As shown in the figure, an embodiment of the present invention provides a positioning and guiding device for drawing and forming enameled flat wire for new energy applications, comprising: In drawing module 1, the enameled flat wire material is drawn inside the drawing module 1, resulting in cold deformation and obtaining the final enameled flat wire. The positioning and guiding module 2 can achieve positioning and guiding of the enameled flat wire during the pulling process when the enameled flat wire moves in the pulling module 1. The stress relief module 3 can eliminate the stress caused by cold deformation of the enameled flat wire during the drawing process. The stress relief module 3 includes a horizontal stress relief unit 31, a transverse stress relief unit 32, and a centering unit 33. The horizontal stress relief unit 31 can eliminate the horizontal stress of the enameled flat wire. The horizontal stress relief unit 31 includes multiple support plates 311 evenly distributed on the positioning guide module 2. Each pair of horizontally symmetrical support plates 311 is rotatably connected to a secondary guide wheel 312. Each pair of support plates 311 is rotatably inserted with a mounting rod 313, and the mounting rod 313 is fixedly connected to the positioning guide module 2. A torsion spring is provided at the connection between the mounting rod 313 and the support plate 311. Among them, the support plate 311 is used to install the auxiliary guide wheel 312 and rotate synchronously with the auxiliary guide wheel 312; Among them, the auxiliary guide wheel 312 is always in contact with the upper and lower sides of the new energy enameled flat wire, rotating on its surface to generate reciprocating rolling pressure; The mounting rod 313 is used to mount the support plate 311 and the torsion spring. The torsion spring is used to apply elastic force to the auxiliary guide wheel 312, so that the auxiliary guide wheel 312 can adaptively fit the shape of the enameled flat wire.

[0023] As a preferred embodiment of the present invention, the transverse stress relief unit 32 can eliminate the transverse stress of the enameled flat wire. The transverse stress relief unit 32 includes a mounting plate 321 disposed inside the support plate 311. A guide plate 322 is fixedly connected to the opposite sides of every two mounting plates 321. A sliding seat 323 is slidably connected inside the guide plate 322. A connecting end 324 is slidably inserted inside one of the sliding seats 323. A transverse guide wheel 325 is rotatably connected to the opposite side of the connecting end 324 and the other sliding seat 323. The mounting plate 321 is used to install all the components of the transverse stress-relief unit 32; The guide plate 322 is used to provide sliding space for the sliding seat 323 and to guide the sliding of the sliding seat 323. The sliding seat 323 is used to drive the connecting end 324 and the transverse guide wheel 325 to move. The connecting end 324 is used to connect to the transverse guide wheel 325; The transverse guide roller 325 is used to provide guidance on both sides during the drawing of enameled flat wire.

[0024] As a preferred embodiment of the present invention, the transverse force dissipation unit 32 further includes an elastic ring 326 fixedly sleeved on the surface of the transverse guide wheel 325, and another sliding seat 323 and the surface of the connecting end 324 are fixedly connected to a connecting frame 328. A damping spring 327 is fixedly connected to one side of the connecting frame 328, and a fine adjustment component 4 is provided on one side of the damping spring 327. Among them, the elastic ring 326 is used to fit with the enameled flat wire. The elastic ring 326 applies lateral flexible deflection to the left and right sides of the enameled flat wire to balance the asymmetrical shear stress on the left and right sides. The connecting bracket 328 is used to connect the damping spring 327 and the transverse guide wheel 325; Among them, the damping spring 327 is used to move the left and right two transverse guide wheels 325 left and right when the enameled flat wire is subjected to the vertical stress relief pressure of the auxiliary guide wheel 312, squeezing the elastic ring 326 and the damping spring 327. The transverse component force generated by the downward pressure of the upper and lower auxiliary guide wheels 312 will be offset by the elastic force applied by the damping spring 327 symmetrically arranged on both sides, thereby realizing elastic yielding and reverse equal force cancellation.

[0025] In a preferred embodiment of the present invention, the fine-tuning component 4 includes a movable plate 41 fixedly connected to one end of the damping spring 327. The surfaces of the two movable plates 41 are threaded together with a bidirectional threaded rod 42, and one end of the bidirectional threaded rod 42 is fixedly connected to a motor to drive the bidirectional threaded rod 42 to rotate, thereby realizing the opposite movement of the two movable plates 41 and adjusting the position of the transverse guide wheel 325. Among them, the movable plate 41 is used to drive the damping spring 327 and the connecting frame 328 to move; Among them, the bidirectional threaded rod 42 is used to drive the two moving plates 41 to move relative to each other; The motor is a servo motor, which is existing technology, and is used to provide power to the bidirectional threaded rod 42.

[0026] In a preferred embodiment of the present invention, the centering unit 33 includes a rotating rod 331 that is rotatably connected to a transverse guide wheel 325 via a pulley and a belt, and an eccentric wheel 332 is fixedly connected to the surface of the rotating rod 331. A bearing plate 333 is rotatably mounted on one end of the rotating rod 331 via a bearing seat. A guide frame 334 is fixedly connected to one side of the upper surface of the bearing plate 333. A return spring 335 is fixedly connected inside the guide frame 334. A pressing plate 336 is fixedly connected to one end of the return spring 335, and the pressing plate 336 is slidably connected to the guide frame 334. The outer side of the pressing plate 336 is parallel to the outer arc surface of the elastic ring 326. Among them, the rotating rod 331 is used to install the eccentric wheel 332 and drive the eccentric wheel 332 to rotate; The eccentric wheel 332 rotates to drive the extrusion plate 336 to move. Among them, the bearing plate 333 is used to provide an installation platform for the rotating rod 331 and the guide frame 334; The guide frame 334 is used to provide space for the extrusion plate 336 to slide and to guide its sliding. Among them, the extrusion plate 336 is used to move along with the movement of the enameled flat wire; The return spring 335 is used to provide elastic force to the extrusion plate 336, so that it generates a force opposite to the offset of the enameled flat wire, and provides a force to reset the offset of the enameled flat wire.

[0027] In a preferred embodiment of the present invention, the positioning guide module 2 includes a mounting frame 21. The mounting frame 21 has two symmetrically arranged mounting brackets 22 fixedly connected inside by bolts. The two mounting brackets 22 have an upper pressure roller 23 and a lower support roller 24 rotatably connected inside by bearing seats. The surfaces of the upper pressure roller 23 and the lower support roller 24 are each provided with guide grooves 25 that are adapted to the width of the enameled flat wire. Based on the two inner walls of the guide grooves 25, the flipping and limiting of the enameled flat wire is realized. The mounting frame 21 is used to provide installation space for the positioning guide module 2 and the stress relief module 3; Among them, the mounting bracket 22 is used to install the stress relief module 3, the upper pressure roller 23 and the lower support roller 24; Among them, the upper pressure roller 23 is used to provide extrusion pressure for the enameled flat wire, and the lower support roller 24 is used to support the enameled flat wire; Among them, the guide groove 25 has a groove width slightly larger than the width of the flat wire, a groove depth slightly smaller than the thickness of the flat wire, and R-angles are machined at the four corners to constrain the upper and lower sides of the enameled flat wire. While relaxing the lateral shear stress, it prevents the flat wire from flipping, curling, and skewing the cross section. While ensuring that the horizontal posture of the wide surface remains unchanged, it presses down the upper and lower surfaces of the flat wire to limit the movement and jumping in the thickness direction. The bearing plate 333 is fixedly connected to one of the mounting brackets 22. The support plate 311 is rotatably connected to the corresponding mounting bracket 22 through the mounting rod 313 and the torsion spring. The mounting rod 313 is fixedly connected to the mounting bracket 22. The moving plate 41 is slidably connected to the mounting bracket 22. The bidirectional threaded rod 42 is rotatably connected to the mounting bracket 22 through the bearing seat. The motor is fixedly installed inside the mounting bracket 22.

[0028] In a preferred embodiment of the present invention, the positioning guide module 2 further includes two hollow boxes 26 fixedly connected to both sides of one of the mounting brackets 22, and a sliding plate 27 is slidably connected inside the hollow box 26. A movable plate 28 is fixedly connected to one end of the sliding plate 27, and the movable plate 28 is slidably connected to the other mounting bracket 22. Movable grooves are provided on both sides of the other mounting bracket 22, and the movable plate 28 is slidably connected inside the sliding groove. An elastic telescopic rod 29 is fixedly connected inside the sliding groove, and the elastic telescopic rod 29 is fixedly connected to the movable plate 28. The hollow box 26 is used to provide sliding space for the sliding plate 27; The sliding plate 27 is used to drive the movable plate 28 to move; The movable plate 28 is used to connect the mounting bracket 22 and drive the corresponding mounting bracket 22 to move. The sliding groove provides space and guidance for the sliding of the movable plate 28. Among them, the elastic telescopic rod 29 is used to provide space for fine-tuning of the mounting bracket 22; A sealing ring is provided at the contact point between the sliding plate 27 and the inner wall of the hollow box 26 to achieve sealed sliding between the sliding plate 27 and the hollow box 26. One of the hollow boxes 26 is connected to an external air pump through a circular pipe. An exhaust pipe is provided at one edge of the inner side of one of the hollow boxes 26. A one-way valve is provided inside both the circular pipe and the exhaust pipe. The external air pump can inject air into the hollow box 26. The sealing ring prevents air leakage, so that the air can drive the sliding plate 27 to move, which in turn drives the movable plate 28 to move, adjusting the position of the corresponding mounting bracket 22, thereby adjusting the distance between the upper pressure roller 23 and the lower support roller 24. Due to the one-way valve, air can only enter the hollow box 26 through the circular pipe and exit through the exhaust pipe. It cannot enter through the exhaust pipe and exits through the circular pipe.

[0029] In a preferred embodiment of the present invention, the pulling module 1 includes a plurality of laterally arranged pulling units 11; One of the drawing units 11 includes a circular upper die 111 and a circular lower die 112. The circular upper die 111 and the circular lower die 112 are arranged vertically, which can pre-compress the enameled flat wire during the drawing and moving of the enameled flat wire, so that the enameled flat wire is shaped into a flat elliptical cross section. Based on the proximity of the upper circular die 111 and the lower circular die 112, the enameled flat wire is provided with upper and lower extrusion pressure, so that when the enameled flat wire is drawn, the enameled flat wire is deformed by the downward pressure, and it is pre-processed. First, move the upper circular mold 111 downwards to press the circular line up and down, making the circle into a flat elliptical cross section with rounded transitions on the left and right sides, thus eliminating the stress caused by abrupt right-angle changes. Other drawing units 11 include a rectangular upper die 113 and a rectangular lower die 114. The rectangular upper die 113 and the rectangular lower die 114 are arranged vertically. A rotating flat wire drawing die is used, which can reduce the thickness and fine-tune the width of the enameled flat wire after the pre-extrusion of the enameled flat wire, gradually narrow the side and regularize the upper and lower planes to produce bare copper flat wire blanks. Both the upper rectangular mold 113 and the lower rectangular mold 114 have pre-reserved process radius corners at their four corners; After the pre-processing of the enameled flat wire, based on the cooperation of multiple rectangular upper molds 113 and rectangular lower molds 114, the thickness of the enameled flat wire is reduced and the width is adjusted in sequence to obtain a bare copper flat wire blank. Subsequently, it is cleaned, annealed, coated with insulating varnish, and cured to generate the finished enameled flat wire, thus completing the processing of new energy enameled flat wire.

[0030] Working principle: The round copper wire raw material first enters the pre-extrusion drawing unit 11, which consists of a circular upper die 111 and a circular lower die 112. It is vertically extruded to form a flat elliptical cross section, completing the initial irregular shape pre-forming. Subsequently, the flat wire enters multiple sets of progressive drawing units 11, which consist of a rectangular upper die 113 and a rectangular lower die 114. During continuous travel, the thickness is gradually reduced, the width is standardized, and the sides and R-angles are corrected, finally forming a bare copper flat wire blank that meets the size requirements. During the drawing process, the flat wire passes through the upper pressure roller 23 and the lower support roller 24. The guide grooves 25 on the surface of the two rollers limit the upper and lower width surfaces of the flat wire, restricting the thickness direction movement and edge warping. Meanwhile, the guide groove 25 sidewall is used to achieve anti-overturning constraint, ensuring that the flat wire wide surface always maintains a horizontal and stable posture. An external air pump can supply air into the hollow box 26 to push the sliding plate 27 and the movable plate 28 to move. With the help of the elastic telescopic rod 29, the distance between the upper pressure roller 23 and the lower support roller 24 can be adaptively adjusted to adapt to flat wires of different thicknesses. At the same time, the motor can drive the bidirectional threaded rod 42 to rotate, driving the two side moving plates 41 to move synchronously in opposite directions. The initial distance of the transverse guide roller 325 is finely adjusted by the damping spring 327 and the connecting frame 328 to adapt to enameled flat wires of different widths, ensuring that the guiding, stress relief and centering actions are stable and reliable throughout the process. When the flat wire is traveling, the torsion spring drives the support plate 311 to rotate adaptively around the mounting rod 313, so that the auxiliary guide wheel 312 always flexibly fits the upper and lower surfaces of the flat wire and rotates accordingly. The auxiliary guide wheel 312 applies continuous and uniform flexible floating rolling to the upper and lower wide surfaces of the flat wire, breaking the surface stress lock-up state caused by cold drawing deformation, promoting grain micro-slippage, uniformly releasing the residual compressive stress in the horizontal direction, and avoiding the arching and warping of the plate surface. The elastic rings 326 on both sides of the flat wire and the surface of the transverse guide wheel 325 are flexibly fitted and subjected to lateral flexible deflection during travel, balancing the asymmetrical stress generated by the shear deformation of the left and right edges, offsetting the internal stress of cross-section torsion, and suppressing the parallelogram distortion. The damping spring 327 provides symmetrical elastic preload to the transverse guide wheel 325 through the connecting frame 328. When the flat wire is subjected to vertical pressure and generates a transverse component force, the transverse guide wheels 325 on both sides can elastically retract synchronously, automatically balancing the lateral load and avoiding one-sided hard extrusion, edge damage and uneven wear. When the flat wire shifts left or right due to stress release or load fluctuation, it will adhere tightly to the single-sided elastic ring 326 and drive the transverse guide wheel 325 to rotate. The transverse guide wheel 325 drives the rotating rod 331 and the eccentric wheel 332 to rotate synchronously through the pulley and belt. The eccentric wheel 332 periodically pushes the extrusion plate 336 to slide along the guide frame 334, compressing the return spring 335. The reverse elastic force of the return spring 335 acts on the offset side of the flat wire through the extrusion plate 336, forming a dynamic return thrust, so that the flat wire returns to the guide center position in real time, avoiding continuous contact on one side, lateral wear and axial micro-torsion.

[0031] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0033] 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 to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning and guiding device for drawing and forming enameled flat wire for new energy applications, characterized in that: include In the drawing module (1), the enameled flat wire material is pulled inside the drawing module (1) to produce cold deformation and obtain the final enameled flat wire; The positioning and guiding module (2) can realize the positioning and guiding of the enameled flat wire during the pulling module (1) when the enameled flat wire moves in the pulling module (1); The stress relief module (3) can eliminate the stress caused by cold deformation of the enameled flat wire during the drawing process. The stress relief module (3) includes a horizontal stress relief unit (31), a transverse stress relief unit (32), and a centering unit (33). The horizontal force dissipation unit (31) includes multiple support plates (311) evenly distributed on the positioning guide module (2). Each pair of horizontally symmetrical support plates (311) is rotatably connected to a secondary guide wheel (312). Each pair of support plates (311) is rotatably inserted with an installation rod (313), and the installation rod (313) is fixedly connected to the positioning guide module (2). A torsion spring is provided at the connection between the installation rod (313) and the support plate (311).

2. The drawing forming and positioning guide device for the enery new use of the enameled flat wire according to claim 1, characterized in that: The transverse stress relief unit (32) can eliminate the transverse stress of the enameled flat wire. The transverse stress relief unit (32) includes a mounting plate (321) disposed inside the support plate (311). A guide plate (322) is fixedly connected to the opposite sides of every two mounting plates (321). A sliding seat (323) is slidably connected inside the guide plate (322). A connecting end (324) is slidably inserted inside one of the sliding seats (323). The connecting end (324) and the opposite side of the other sliding seat (323) are rotatably connected to a transverse guide wheel (325).

3. The drawing forming and positioning guide device for the enery new use of the enameled flat wire according to claim 2, characterized in that: The transverse force dissipation unit (32) also includes an elastic ring (326) fixedly sleeved on the surface of the transverse guide wheel (325). Another sliding seat (323) and the surface of the connecting end (324) are fixedly connected to a connecting frame (328). A damping spring (327) is fixedly connected to one side of the connecting frame (328), and a fine adjustment component (4) is provided on one side of the damping spring (327).

4. The drawing forming and positioning guide device for the enery new use of the enameled flat wire according to claim 3, characterized in that: The fine-tuning component (4) includes a movable plate (41) fixedly connected to one end of the damping spring (327), and the surfaces of the two movable plates (41) are threaded together with a bidirectional threaded rod (42), and one end of the bidirectional threaded rod (42) is fixedly connected to a motor.

5. The positioning and guiding device for drawing and forming enameled flat wire for new energy applications according to claim 4, characterized in that: The centering unit (33) includes a rotating rod (331) that is rotatably connected to a transverse guide wheel (325) via a pulley and a belt. An eccentric wheel (332) is fixedly connected to the surface of the rotating rod (331). A bearing plate (333) is rotatably mounted on one end of the rotating rod (331) via a bearing seat. A guide frame (334) is fixedly connected to one side of the upper surface of the bearing plate (333). A return spring (335) is fixedly connected inside the guide frame (334). A pressing plate (336) is fixedly connected to one end of the return spring (335). The pressing plate (336) is slidably connected to the guide frame (334). The outer side of the pressing plate (336) is parallel to the outer arc surface of the elastic ring (326).

6. The positioning and guiding device for drawing and forming enameled flat wire for new energy applications according to claim 5, characterized in that: The positioning guide module (2) includes a mounting frame (21). Inside the mounting frame (21), two symmetrically arranged mounting brackets (22) are fixedly connected by bolts. Inside the two mounting brackets (22), an upper pressure roller (23) and a lower support roller (24) are rotatably connected by bearing seats. The surfaces of the upper pressure roller (23) and the lower support roller (24) are both provided with guide grooves (25) that are adapted to the width of the enameled flat wire, and based on the two inner walls of the guide grooves (25).

7. A positioning and guiding device for drawing and forming enameled flat wire for new energy applications according to claim 6, characterized in that: The bearing plate (333) is fixedly connected to one of the mounting brackets (22). The support plate (311) is rotatably connected to the corresponding mounting bracket (22) through the mounting rod (313) and the torsion spring. The mounting rod (313) is fixedly connected to the mounting bracket (22). The moving plate (41) is slidably connected to the mounting bracket (22). The bidirectional threaded rod (42) is rotatably connected to the mounting bracket (22) through the bearing seat. The motor is fixedly installed inside the mounting bracket (22).

8. A positioning and guiding device for drawing and forming enameled flat wire for new energy applications according to claim 6, characterized in that: The positioning and guiding module (2) also includes two hollow boxes (26) fixedly connected to both sides of one of the mounting brackets (22), and a sliding plate (27) is slidably connected inside the hollow box (26). A movable plate (28) is fixedly connected to one end of the sliding plate (27), and the movable plate (28) is slidably connected to the other mounting bracket (22). Movable grooves are provided on both sides of the other mounting bracket (22), and the movable plate (28) is slidably connected inside the sliding groove. An elastic telescopic rod (29) is fixedly connected inside the sliding groove, and the elastic telescopic rod (29) is fixedly connected to the movable plate (28).

9. A positioning and guiding device for drawing and forming enameled flat wire for new energy applications according to claim 8, characterized in that: A sealing ring is provided at the contact point between the sliding plate (27) and the inner wall of the hollow box (26) to achieve sealed sliding between the sliding plate (27) and the hollow box (26). One of the hollow boxes (26) is connected to an external air pump through a circular pipe. An exhaust pipe is provided at one edge of the inner side of one of the hollow boxes (26). A one-way valve is provided inside both the circular pipe and the exhaust pipe.

10. A positioning and guiding device for drawing and forming enameled flat wire for new energy applications according to claim 1, characterized in that: The pulling module (1) includes a plurality of horizontally arranged pulling units (11); One of the drawing units (11) includes a circular upper die (111) and a circular lower die (112), the circular upper die (111) and the circular lower die (112) being arranged perpendicularly; The other drawing unit (11) includes a rectangular upper die (113) and a rectangular lower die (114), which are arranged vertically.

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