Flattening forming device for enameled flat wire
By designing an intermittent pushing and pressing mechanism for the enameled flat wire flattening forming device, the problem of existing equipment being unable to control the thickness of copper wire was solved, achieving efficient and uniform flattening forming, and reducing production costs and energy consumption.
Patent Information
- Application Number
- CN202422562404.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-10-23
AI Technical Summary
Existing flattening equipment cannot effectively control the thickness of copper wires, resulting in high production costs and poor forming quality after flattening, which makes the wires prone to springback and requires secondary processing.
A flattening and forming device for enameled flat wire was designed, comprising an intermittent pushing mechanism and a pressing mechanism. The pushing speed and flattening force are controlled by components such as guide wheels, rotating rods, and linkage rods, and the thickness is adjusted and uniform extrusion is achieved by adjusting components and inclined extrusion plates.
It enables uniform flattening of enameled flat wires of different thicknesses, improves the level of production automation and flattening quality, reduces energy consumption, and improves production efficiency.
Smart Images
Figure CN223624774U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of enameled flat wire flattening technology, and in particular to a flattening and forming device for enameled flat wire. Background Technology
[0002] Enamelled flat wire is a conductive wire used in electrical equipment such as motors and transformers. It is typically made of copper or aluminum conductors coated with enamel. Enamelled flat wire plays a crucial role in both conductivity and insulation in electrical equipment and is widely used in various electrical devices. To ensure the quality and stability of enamelled flat wire, it needs to be flattened. Flattening makes the wire more stable during use, reduces friction and wear, and improves its conductivity and service life. Therefore, stabilizing flattening equipment has become an essential piece of equipment for electrical equipment manufacturers and wire producers. Stabilizing flattening equipment can be adjusted according to the specifications and requirements of the enamelled flat wire to ensure effective flattening, improving product quality and production efficiency. In the manufacturing process of electrical equipment and wire production, stabilizing flattening equipment plays a vital role and is one of the important pieces of equipment for ensuring product quality and production efficiency.
[0003] Currently, there are dedicated flattening equipment for flattening copper wires. However, these flattening devices cannot control the thickness and require the use of different flattening devices depending on the thickness requirements. This results in higher production costs. Furthermore, after flattening, the material has a certain degree of elasticity and is prone to springback, leading to poor forming quality and often requiring secondary flattening, which is inconvenient. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a flattening and forming device for enameled flat wires.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A flattening and forming device for enameled flat wire includes a frame, a wire pressing mechanism at one end of the frame, a mounting frame fixedly connected to one side of the top of the frame, a motor on one side of the top of the mounting frame, a wire spool fixedly connected to one end of the top of the frame, and three fixed frames fixedly connected to one inner side of the frame. Enameled wire is slidably connected to the end of the fixed frames. An intermittent wire pushing mechanism is provided on one side of the mounting frame, and the enameled wire passes through the intermittent wire pushing mechanism and the wire pressing mechanism.
[0007] Preferably, the intermittent push-wire mechanism includes a guide wheel 1, a rotating rod 1, a mounting block, a guide rod, a rotating rod 2, a turntable, a fixed rod, a linkage rod, a guide wheel 2, a limit block, a rotating rod 3, and a spring 2. The rotating rod 2 is rotatably connected to the top side of the mounting frame, the rotating rod 2 is located at the output end of the motor, the turntable is located at the end of the rotating rod 2, the guide rod is fixed to one side of the circumference of the turntable by screws at equal intervals, the rotating rod 3 is rotatably connected to the middle side of the mounting frame, the guide wheel 2 is rotatably connected to one end of the circumference of the rotating rod 3, the linkage rod is sleeved on the circumference of the rotating rod 3, the top end of the linkage rod is an inclined structure, and a limit component is provided in the middle section of the linkage rod.
[0008] Furthermore: the limiting block is fixedly connected to one side of the circumference of the second guide wheel, and the first rotating rod is rotatably connected to the bottom side of the mounting frame. The first guide wheel is located at one end of the circumference of the first rotating rod, and the enameled wire passes through the opposite side of the first and second guide wheels. The mounting block is fixedly connected to the top side of the wire pressing mechanism, the fixing rod is fixedly connected to the top side of the linkage rod, and the two ends of the second spring are respectively fixedly connected to the same side of the fixing rod and the mounting block.
[0009] Based on the aforementioned solution: the limiting component includes a mounting post and a guide block, with the mounting post rotatably connected to the middle side of the linkage rod, and the guide block rotatably connected to the circumference of the mounting post via a torsion spring, and a groove is provided on the side of the linkage rod near the guide block.
[0010] A preferred embodiment of the aforementioned scheme is as follows: the pressing mechanism includes a support block, a guide groove, a second fixed plate, a limiting plate, an L-shaped plate, a movable plate, a slide groove, a first fixed seat, a first spring, a second fixed seat, and a pressing plate. The first fixed plate and the second fixed plate are fixedly connected to one side of the top of the frame. The guide grooves are respectively opened on opposite sides of the first fixed plate and the second fixed plate. The two limiting plates are slidably connected in the guide grooves. The support block is fixedly connected to opposite sides of the limiting plates. The pressing plate is fixedly connected to opposite sides of every two support blocks. The slide groove is opened on one side of the second fixed plate. The movable plate is slidably connected to the slide groove.
[0011] As a further embodiment of this utility model: the two ends of the L-shaped plate are respectively rotatably connected to one side of the limiting plate and the moving plate, and the first fixed seat is fixedly connected to one side of the moving plate, the second fixed seat is fixedly connected to the middle side of the second fixed plate, and the first spring is fixedly connected between the first fixed seat and the second fixed seat.
[0012] Meanwhile, a support rod is provided at one end of the fixed base 2. The support rod passes through the spring 1 and forms a sliding connection with the fixed base 1. The adjustment component is located on the bottom side of the movable plate. The middle section of the L-shaped plate is rotatably connected to one side of the fixed plate 2 via a rotating shaft.
[0013] As a preferred embodiment of this utility model: the adjustment component includes an L-shaped guide plate, a rotating cover and a toothed protrusion, with the toothed protrusions evenly spaced at the bottom of the movable plate, the gear being rotatably connected to one side of the frame, and the rotating cover being threadedly connected to the inner circumference of the gear.
[0014] Meanwhile, a mounting groove is provided on one side of the frame, and the mounting groove is connected to the inner shaft of the gear by a thread. An L-shaped guide plate is fixedly connected to one side of the frame, and the gear and the tooth cam mesh with each other.
[0015] As a preferred embodiment of this utility model, the two extrusion plates have an inclined surface structure at their opposite ends.
[0016] The beneficial effects of this utility model are as follows:
[0017] 1. The enameled flat wire flattening and forming device, through the setting of an intermittent pushing mechanism including a guide wheel one, a rotating rod one, a mounting block, a guide rod, a rotating rod two, a turntable, a fixed rod, a linkage rod, a guide wheel two, a limit block, a rotating rod three, and a spring two, plays the role of controlling the pushing speed and flattening force of the enameled flat wire, ensuring that the enameled flat wire is subjected to uniform force during the flattening process, guaranteeing the overall quality and appearance of the flat wire, improving the automation level of the production process, and reducing manual intervention.
[0018] 2. The flattening and forming device for enameled flat wire, by setting up a wire pressing mechanism including a support block, guide groove, fixed plate two, limiting plate, L-shaped plate, moving plate, slide groove, fixed seat one, spring one, fixed seat two and extrusion plate, promotes the adjustment of the distance between the two extrusion plates on opposite sides, thereby meeting the flattening requirements of enameled flat wires of different thicknesses and improving practicality.
[0019] 3. The flattening and forming device for enameled flat wire is equipped with an adjustment component including an L-shaped guide plate, a rotating cover, and toothed protrusions. The rotating cover has scale lines on its circumference. During the rotation of the rotating cover, the scale of the L-shaped guide plate facilitates the operator's control over the moving distance of the moving plate and improves the accuracy of the wire thickness adjustment.
[0020] 4. The flattening and forming device for enameled flat wire has a beveled structure on the opposite end of the extrusion plate. This facilitates the gradual compression of the enameled wire between the two extrusion plates as it enters, rather than being subjected to sudden and extreme extrusion force. This ensures that the enameled wire is flattened evenly and avoids local over- or under-flattening. At the same time, the beveled surface acts as a buffer, reducing energy loss, decreasing the resistance of the enameled wire, improving the operating efficiency of the production line, and accelerating the production speed. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the main structure of the flattening and forming device for enameled flat wire proposed in this utility model.
[0022] Figure 2 This is a top view of the flattening and forming device for enameled flat wire proposed in this utility model.
[0023] Figure 3 This is a schematic diagram of the back structure of the flattening and forming device for enameled flat wire proposed in this utility model;
[0024] Figure 4 This is a schematic diagram of the intermittent pushing mechanism in the flattening and forming device for enameled flat wire proposed in this utility model;
[0025] Figure 5 This is a partial structural diagram of the intermittent pushing mechanism in the flattening and forming device for enameled flat wire proposed in this utility model.
[0026] Figure 6 This is a schematic diagram of the wire pressing mechanism in the flattening and forming device for enameled flat wire proposed in this utility model;
[0027] Figure 7 This is a partial structural diagram of the wire pressing mechanism in the flattening and forming device for enameled flat wire proposed in this utility model;
[0028] Figure 8 This is a schematic diagram of the extrusion block in the flattening and forming device for enameled flat wire proposed in this utility model.
[0029] In the diagram: 1. Frame; 2. Enameled wire; 3. Mounting bracket; 4. Motor; 5. Wire spool; 6. Fixing bracket; 7. Intermittent wire pushing mechanism; 8. Fixing plate one; 9. Support block; 10. Guide groove; 11. Fixing plate two; 12. Limiting plate; 13. L-shaped plate; 14. Moving plate; 15. Slide groove; 16. Fixing seat one; 17. Spring one; 18. Fixing seat two; 19. Extrusion plate; 20. L-shaped guide. 21. Plate; 22. Rotating cover; 23. Gear; 24. Tooth protrusion; 701. Inclined surface; 702. Guide wheel one; 703. Rotating rod one; 704. Mounting block; 705. Guide rod two; 706. Turntable; 707. Fixed rod; 708. Linkage rod; 709. Guide wheel two; 710. Limiting block; 711. Rotating rod three; 712. Spring two; 713. Mounting column; 714. Guide block. Detailed Implementation
[0030] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.
[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0032] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "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 utility model 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 limitations on this utility model.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] Example 1:
[0035] Flattening and forming device for enameled flat wire, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the device includes a frame 1, an intermittent wire pushing mechanism 7 is provided inside the frame 1, and a wire pressing mechanism is provided at the end of the frame 1. One end of the wire pressing mechanism is provided with an adjustment component for adjusting the wire pressing thickness.
[0036] A mounting bracket 3 is fixedly connected to one side of the top of the frame 1, and a motor 4 is fixed to one side of the top of the mounting bracket 3 via a support plate. A wire spool 5 is fixedly connected to one end of the top of the frame 1, and three fixing brackets 6 are fixedly connected to one inner side of the frame 1. Enamelled wire 2 is slidably connected to the end of the fixing bracket 6, and the enamelled wire 2 passes through the intermittent wire pushing mechanism 7 and the wire pressing mechanism.
[0037] To control the pushing speed and flattening force of the enameled wire 2; such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the intermittent push-wire mechanism 7 includes a guide wheel 701, a rotating rod 702, a mounting block 703, a guide rod 704, a rotating rod 705, a turntable 706, a fixed rod 707, a linkage rod 708, a guide wheel 709, a limit block 710, a rotating rod 711, and a spring 712. The rotating rod 705 is rotatably connected to the top side of the mounting frame 3. The rotating rod 705 is connected to the output end of the motor 4 via a coupling. The turntable 706 is threaded to the end of the rotating rod 705. The guide rod 704 is fixed to one side of the circumference of the turntable 706 by screws at equal intervals. The rotating rod 711 is rotatably connected to the middle side of the mounting frame 3. The guide wheel 709 is rotatably connected to one end of the circumference of the rotating rod 711. The linkage rod 708 is sleeved on the circumference of the rotating rod 711. The top end of the linkage rod 708 is inclined, and a limit component is provided in the middle section of the linkage rod 708.
[0038] The limiting block 710 is fixedly connected to one side of the circumference of the second guide wheel 709, and the first rotating rod 702 is rotatably connected to the bottom side of the mounting bracket 3. The first guide wheel 701 is threadedly connected to one end of the circumference of the first rotating rod 702, and the enameled wire 2 passes through the opposite side of the first guide wheel 701 and the second guide wheel 709. The mounting block 703 is fixedly connected to the top side of the wire pressing mechanism, the fixing rod 707 is fixedly connected to the top side of the linkage rod 708, and the two ends of the second spring 712 are respectively fixedly connected to the same side of the fixing rod 707 and the mounting block 703.
[0039] The limiting component includes a mounting post 713 and a guide block 714. The mounting post 713 is rotatably connected to the middle side of the linkage rod 708, and the guide block 714 is rotatably connected to the circumference of the mounting post 713 by a torsion spring. A groove is provided on the side of the linkage rod 708 near the guide block 714.
[0040] During operation, the starter motor 4 drives the rotating rod 705 to rotate, which in turn drives the turntable 706 to rotate. The rotating turntable 706 drives the guide rod 704 on its circumference to move in a circular motion. The moving guide rod 704 pushes the linkage rod 708 to swing, and the spring 712 is stretched. During the swinging process, the guide block 714 in the middle section of the linkage rod 708 pushes the limit block 710, causing the guide wheel 709 to rotate at a certain angle. The enameled wire 2 located between the guide wheel 709 and the guide wheel 701... The guide wheel 701 and guide wheel 709 rotate synchronously at a certain distance to the right. When one of the guide rods 704 slides past the linkage rod 708, the spring 712 pulls the linkage rod 708 back to its original position. The guide block 714 passes slightly past the limit block 710 under the action of the torsion spring. This controls the pushing speed and flattening force of the enameled flat wire, ensuring that the enameled flat wire is evenly stressed during the flattening process, guaranteeing the overall quality and appearance of the flat wire, improving the automation level of the production process, and reducing manual intervention.
[0041] To achieve the function of adjusting the thickness of the crease; such as Figure 6 , Figure 7 and Figure 8 As shown, the pressing mechanism includes a support block 9, a guide groove 10, a second fixed plate 11, a limiting plate 12, an L-shaped plate 13, a moving plate 14, a slide groove 15, a first fixed seat 16, a first spring 17, a second fixed seat 18, and a pressing plate 19. The first fixed plate 8 and the second fixed plate 11 are fixedly connected to one side of the top of the frame 1. The guide groove 10 is respectively opened on the opposite side of the first fixed plate 8 and the second fixed plate 11. The two limiting plates 12 are respectively slidably connected in the guide groove 10. The support block 9 is fixedly connected to the opposite side of the limiting plate 12. The pressing plate 19 is fixedly connected to the opposite side of every two support blocks 9. The slide groove 15 is opened on one side of the second fixed plate 11. The moving plate 14 is slidably connected to the slide groove 15.
[0042] The two ends of the L-shaped plate 13 are rotatably connected to one side of the limiting plate 12 and the moving plate 14, respectively. The first fixed seat 16 is fixedly connected to one side of the moving plate 14, and the second fixed seat 18 is fixedly connected to the middle side of the second fixed plate 11. The first spring 17 is fixedly connected between the first fixed seat 16 and the second fixed seat 18. One end of the second fixed seat 18 is connected to a support rod by a thread. The support rod passes through the first spring 17 and forms a sliding connection with the first fixed seat 16. The adjustment component is set on the bottom side of the moving plate 14. The middle section of the L-shaped plate 13 is rotatably connected to one side of the second fixed plate 11 by a rotating shaft.
[0043] The adjusting component drives the moving plate 14 to slide horizontally a certain distance in the slide groove 15. The moving plate 14 pushes the L-shaped plate 13 to rotate around the middle section shaft, and drives the limiting plate 12 at the end of the L-shaped plate 13 to move in the opposite direction in the guide groove 10. This facilitates the adjustment of the distance between the two extrusion plates 19 on opposite sides, thereby meeting the flattening requirements of enameled flat wires of different thicknesses and improving practicality.
[0044] Example 2:
[0045] Flattening and forming device for enameled flat wire, such as Figure 7 and Figure 8As shown, the adjustment assembly includes an L-shaped guide plate 20, a rotating cover 21, and toothed protrusions 23. The toothed protrusions 23 are evenly spaced at the bottom of the movable plate 14. A gear 22 is rotatably connected to one side of the frame 1. The rotating cover 21 is threadedly connected to the inner circumference of the gear 22. A mounting groove is provided on one side of the frame 1, and the mounting groove is threadedly connected to the inner shaft of the gear 22. The L-shaped guide plate 20 is fixedly connected to one side of the frame 1. The gear 22 and the toothed protrusions 23 mesh with each other. By rotating the rotating cover 21, the movable plate 14 on top of the toothed protrusions 23 moves within the slide groove 15, effectively promoting the driving work of the pressing mechanism. During this process, the circumference of the rotating cover 21 is provided with scale lines. As the rotating cover 21 rotates, the scale lines of the L-shaped guide plate 20 facilitate the operator's control over the movement distance of the movable plate 14, improving the accuracy of the pressing thickness adjustment.
[0046] The two extrusion plates 19 have a beveled end structure on one side; this facilitates the gradual compression of the enameled wire 2 between the two extrusion plates 19 when it enters, rather than being subjected to a sudden and extreme compressive force. This ensures that the enameled wire is flattened evenly and avoids local over- or under-flattening. At the same time, the beveled end 24 acts as a buffer, reducing energy loss, reducing the resistance of the enameled wire 2, improving the operating efficiency of the production line, and accelerating the production speed.
[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A flattening and forming device for enameled flat wire, comprising a frame (1), characterized in that, One end of the frame (1) is provided with a wire pressing mechanism, and a mounting frame (3) is fixedly connected to one side of the top of the frame (1). A motor (4) is provided on one side of the top of the mounting frame (3). A wire spool (5) is fixedly connected to one end of the top of the frame (1), and three fixed frames (6) are fixedly connected to one inner side of the frame (1). Enamelled wire (2) is slidably connected to the end of the fixed frame (6). An intermittent wire pushing mechanism (7) is provided on one side of the mounting frame (3). The enamelled wire (2) passes through the intermittent wire pushing mechanism (7) and the inside of the wire pressing mechanism. The intermittent wire pushing mechanism (7) includes a guide wheel (701), a rotating rod (702), a mounting block (703), a guide rod (704), a rotating rod (705), a turntable (706), a fixed rod (707), and a linkage rod. (708), guide wheel 2 (709), limit block (710), rotating rod 3 (711) and spring 2 (712), and rotating rod 2 (705) is rotatably connected to the top side of the mounting frame (3), rotating rod 2 (705) is set at the output end of motor (4), turntable (706) is set at the end of rotating rod 2 (705), guide rod (704) is fixed at equal distances to one side of the circumference of turntable (706) by screws, rotating rod 3 (711) is rotatably connected to the middle side of mounting frame (3), guide wheel 2 (709) is rotatably connected to one end of the circumference of rotating rod 3 (711), linkage rod (708) is sleeved on the circumference of rotating rod 3 (711), and the top of linkage rod (708) is an inclined structure, and a limit component is set in the middle section of linkage rod (708).
2. The flattening and forming device for enameled flat wire according to claim 1, characterized in that, The limiting block (710) is fixedly connected to one side of the circumference of the guide wheel (709), and the rotating rod (702) is rotatably connected to the bottom side of the mounting frame (3). The guide wheel (701) is located at one end of the circumference of the rotating rod (702), and the enameled wire (2) passes through the guide wheel (701) and the guide wheel (709) on opposite sides. The mounting block (703) is fixedly connected to the top side of the wire pressing mechanism. The fixing rod (707) is fixedly connected to the top side of the linkage rod (708). The two ends of the spring (712) are respectively fixedly connected to the same side of the fixing rod (707) and the mounting block (703).
3. The flattening and forming device for enameled flat wire according to claim 1, characterized in that, The limiting component includes a mounting post (713) and a guide block (714). The mounting post (713) is rotatably connected to the middle side of the linkage rod (708), and the guide block (714) is rotatably connected to the circumference of the mounting post (713) by a torsion spring. A groove is provided on the side of the linkage rod (708) near the guide block (714).
4. The flattening and forming device for enameled flat wire according to claim 1, characterized in that, The pressing mechanism includes a support block (9), a guide groove (10), a second fixed plate (11), a limiting plate (12), an L-shaped plate (13), a moving plate (14), a slide groove (15), a first fixed seat (16), a first spring (17), a second fixed seat (18), and a pressing plate (19). The first fixed plate (8) and the second fixed plate (11) are fixedly connected to one side of the top of the frame (1). The guide groove (10) is opened on the opposite side of the first fixed plate (8) and the second fixed plate (11). The two limiting plates (12) are slidably connected in the guide groove (10). The support block (9) is fixedly connected to the opposite side of the limiting plate (12). The pressing plate (19) is fixedly connected to the opposite side of every two support blocks (9). The slide groove (15) is opened on one side of the second fixed plate (11). The moving plate (14) is slidably connected to the slide groove (15).
5. The flattening and forming device for enameled flat wire according to claim 4, characterized in that, The two ends of the L-shaped plate (13) are rotatably connected to one side of the limiting plate (12) and the moving plate (14), respectively. The first fixed seat (16) is fixedly connected to one side of the moving plate (14), the second fixed seat (18) is fixedly connected to the middle side of the second fixed plate (11), and the first spring (17) is fixedly connected between the first fixed seat (16) and the second fixed seat (18).
6. The flattening and forming device for enameled flat wire according to claim 4, characterized in that, One end of the fixed seat 2 (18) is provided with a support rod, which passes through the spring 1 (17) and forms a sliding connection with the fixed seat 1 (16). The adjustment component is located on the bottom side of the moving plate (14), and the middle section of the L-shaped plate (13) is rotatably connected to one side of the fixed plate 2 (11) through a rotating shaft.
7. The flattening and forming device for enameled flat wire according to claim 6, characterized in that, The adjustment assembly includes an L-shaped guide plate (20), a rotating cover (21), and a toothed protrusion (23). The toothed protrusion (23) is evenly spaced at the bottom of the moving plate (14). The gear (22) is rotatably connected to one side of the frame (1). The rotating cover (21) is threadedly connected to the inner circumference of the gear (22).
8. The flattening and forming device for enameled flat wire according to claim 7, characterized in that, The frame (1) has an installation groove on one side, and the installation groove is connected to the inner shaft of the gear (22) by a thread. The L-shaped guide plate (20) is fixedly connected to one side of the frame (1), and the gear (22) meshes with the tooth convex (23).
9. The flattening and forming device for enameled flat wire according to claim 4, characterized in that, The two extrusion plates (19) have a beveled (24) structure on opposite sides.