High-precision painting process for trapezoidal enameled wire

Abstract

The invention relates to the technical field of varnished wires, in particular to a high-precision varnishing process of a trapezoidal varnished wire, which comprises the following steps: a material round wire is respectively molded into a bare wire of the trapezoidal varnished wire on a plurality of molding devices, and the bare wire is a flat wire with a trapezoidal cross section; a bare wire formed by the forming wire synchronously runs through the first guide mechanism and is cleaned by the ultrasonic cleaning equipment; synchronously operating through a second guide mechanism and annealing through an annealing furnace; the third guide mechanism synchronously operates to enter the painting equipment to be painted for multiple times; the trapezoidal enameled wire synchronously runs to take-up equipment through a fourth guide mechanism and is taken up to a bobbin; and the first guide mechanism, the second guide mechanism, the third guide mechanism and the fourth guide mechanism are respectively provided with a wire turning prevention guide wheel group. The multiple guide mechanisms are connected with the forming device, the ultrasonic cleaning device, the annealing furnace, the painting device and the take-up device, it is ensured that flat wires do not turn over during operation through the anti-turning guide wheel set, and the production efficiency and the qualified rate of enameled wires are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of enameled wire, and particularly relates to a high-precision painting process of trapezoidal enameled wire. BACKGROUND

[0002] The production procedure of enameled wire is that round wire is formed into round bare wire or flat bare wire through wire drawing or rolling, the bare wire is wound on a bobbin, the bobbin is transported to a painting procedure, the bare wire is unwound, the bare wire is cleaned and dried, and then the bare wire is painted and baked for multiple times, the surface of the bare wire is attached with multiple layers of insulating paint, and finally the enameled wire is wound on the bobbin. The round bare wire or the flat bare wire with rectangular cross section can be neatly and compactly wound on the bobbin, however, when the cross section of the enameled wire is a special shape such as trapezoidal, the bare wire is stacked and wound on the bobbin, the wire spacing and tension need to be strictly controlled, otherwise the bare wire is easy to deform and the surface is easy to have indentation, even if the wire spacing and tension are accurately controlled, indentation or deformation is still difficult to avoid due to mechanical errors.

[0003] The enameled wire with trapezoidal cross section is more compactly wound, has higher space utilization, more stable electrical performance, lower loss, larger contact area between conductors and between the conductors and the core (or framework), improved heat dissipation efficiency, and is not easy to be twisted or deformed during winding. If the bare wire of the enameled wire is deformed or has indentation, the painting effect is affected, and the coil arrangement is not compact or the coil is aged quickly. Moreover, the forming procedure and the painting procedure are isolated in the prior art, which limits the production efficiency of the enameled wire.

[0004] In addition, the top surface and the bottom surface of the enameled wire with trapezoidal cross section are both inclined surfaces, that is, the thickness of one side of the enameled wire is large and the thickness of the other side is small, and the guide surface of the guide wheel is a cylindrical surface, the wire is in an inclined state during wire feeding, and the wire is deformed or even damaged the painting mold due to vibration or sudden change of tension during wire feeding. SUMMARY

[0005] The present application aims to provide a high-precision painting process of trapezoidal enameled wire, to connect the forming device, the ultrasonic cleaning device, the annealing furnace, the painting device and the winding device through multiple guide mechanisms, and to ensure that the flat wire does not overturn through the anti-overturning guide wheel set, so as to improve the production efficiency and the qualified rate of the enameled wire.

[0006] To achieve the above purpose, the present application adopts the following technical scheme: A high-precision painting process of trapezoidal enameled wire, comprising the following steps: (1) forming incoming round wire into bare wire of trapezoidal enameled wire through multiple forming devices respectively, the bare wire being flat wire with trapezoidal cross section; (2) The formed bare wire is synchronously operated through the first guide mechanism, cleaned through the ultrasonic cleaning equipment, and oil stains and debris on the surface of the bare wire are removed; (3) The cleaned bare wire is synchronously operated through the second guide mechanism, and is annealed through the annealing furnace; (4) The annealed bare wire is synchronously operated through the third guide mechanism, enters the paint coating equipment, and is coated with paint in multiple ways to obtain multiple trapezoidal enameled wires; (5) The trapezoidal enameled wire is synchronously operated through the fourth guide mechanism to the take-up equipment, and is taken up to the spool; The first guide mechanism, the second guide mechanism, the third guide mechanism and the fourth guide mechanism respectively have an anti-winding guide wheel set, the anti-winding guide wheel set has a plurality of guide grooves, and the groove bottom surface of the guide groove is a conical cylindrical surface.

[0007] Further, the inclination angle of the groove bottom surface of the guide groove is greater than the inclination angle of the inclined surface of the bare wire, and the guide surfaces of the guide wheels of the formed wire, the ultrasonic cleaning equipment, the paint coating equipment and the take-up equipment are all cylindrical surfaces.

[0008] Further, the cross section of the bare wire is trapezoidal, the top surface and the bottom surface of the bare wire are inclined surfaces, the included angle between the inclined surface and the symmetry axis of the bare wire is the inclination angle, and the inclination angle is 4°-6°; The inclination angle of the groove bottom surface of the guide groove is the included angle between the groove bottom surface and the horizontal line.

[0009] Further, the guide wheel set comprises an axle and a plurality of wheel pieces, the plurality of wheel pieces are detachably sleeved on the axle, and each of the wheel pieces is provided with one guide groove; The axle is arranged on the rack through an adjustable mounting seat, so that the mounting angle of the axle is adjustable.

[0010] Further, the adjustable mounting seat is arranged on the rack through a rotating shaft, and a servo motor is connected to the rotating shaft; the servo motor is used to adjust the included angle between the axis of the guide wheel set and the horizontal plane.

[0011] Further, the first guide mechanism, the second guide mechanism, the third guide mechanism and the fourth guide mechanism each comprise a driving motor, and the driving motor is drivingly connected with the axle; The driving speed of the driving motor is used to obtain the wire running speed, the actual wire running speed is monitored, the wire running speed is controlled based on the wire running speed monitoring, the forming speed of the forming equipment, the paint coating speed of the paint coating equipment and the driving speed of each guide mechanism are controlled, so that the wire running speed between the forming equipment and the take-up equipment is consistent.

[0012] Further, in the step (1), the forming equipment comprises a roller wheel set, an annealing channel, a forming die and a forming power wheel set, and the incoming round wire sequentially passes through the roller wheel set, the annealing channel, the forming die and the forming power wheel set to be formed into the bare wire of the trapezoidal enameled wire; In the step (3), the annealed bare wire is sized by a sizing mechanism at the outlet of the annealing furnace Further, the sizing mechanism comprises clamping plates, a mounting seat and a sizing die, the sizing die is positioned between the two clamping plates through a plane bearing, the two clamping plates are in sliding fit with the mounting seat, and the two clamping plates are connected through bolts. The die hole of the sizing die is divided into a wire inlet section, a sizing section and a wire outlet section connected in sequence, and the inner wall of the wire inlet section is smoothly and transitionally connected with the sizing section.

[0013] Further, the forming equipment and the first guide structure have a wire storage mechanism, the formed bare wire runs from the forming equipment to the wire storage mechanism, and after passing through the wire storage structure and the first guide mechanism, the bare wire enters the ultrasonic cleaning equipment.

[0014] Further, a plurality of incoming round wires are respectively formed into the bare wires of the trapezoidal enameled wire by a plurality of forming equipment, and the plurality of bare wires are guided by the first guide mechanism, the second guide mechanism, the third guide mechanism and the fourth guide mechanism, and are simultaneously subjected to ultrasonic cleaning, annealing, painting and winding, and then are respectively wound onto a plurality of spools.

[0015] The technical scheme provided by the present application can include the following beneficial effects: In the present application, the forming equipment, the ultrasonic cleaning equipment, the annealing furnace, the painting equipment and the winding equipment are connected by a plurality of guide mechanisms, the flat wire with a trapezoidal cross section is directly subjected to the cleaning and painting processes without winding, which not only improves the production efficiency but also prevents damage caused by winding the bare wire, thereby improving the product qualification rate. Moreover, in the present application, the anti-winding guide wheel set has a conical surface guide surface, and the line is attached to the conical surface, thereby achieving the effect of preventing winding. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of a high-precision painting line of the trapezoidal enameled wire according to an embodiment of the present application; Figure 2 is a schematic view of an anti-winding guide wheel set; Figure 3 is a schematic view of the cross section of the bare wire; Figure 4 is a schematic view of a guide mechanism; Figure 5 is a schematic view of a forming equipment; Figure 6 is a schematic view of a sizing mechanism; The raw round wire 01, the forming device 1, the roller wheel group 11, the annealing channel 12, the forming die 13, the forming power wheel group 14, the first guide mechanism 2, the ultrasonic cleaning device 3, the second guide mechanism 4, the annealing furnace 5, the sizing mechanism 51, the clamping plate 511, the mounting seat 512, the sizing die 513, the third guide mechanism 6, the painting device 7, the fourth guide mechanism 8, the take-up device 9, the anti-overturning wire guide wheel group 02, the guide groove 021, the wheel shaft 022, the wheel piece 023, the adjustable mounting seat 024, the servo motor 025, the driving motor 026 and the wire storage mechanism 03. DETAILED DESCRIPTION

[0017] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended only for explanation of the present application, and cannot be understood as limiting the present application.

[0018] The present application is described below in conjunction with Figures 1 to 6 A high-precision painting process for trapezoidal enameled wire is described below according to an embodiment of the present application, which comprises the following steps: (1) The raw round wire 01 is respectively formed into bare wire of trapezoidal enameled wire on a plurality of forming devices 1, and the bare wire is flat wire with a trapezoidal cross section; (2) The bare wire formed by the forming device is synchronously operated through the first guide mechanism 2 to pass through the ultrasonic cleaning device 3 for cleaning to remove oil stains and debris on the surface of the bare wire; (3) The cleaned bare wire is synchronously operated through the second guide mechanism 4 to pass through the annealing furnace 5 for annealing; (4) The annealed bare wire is synchronously operated through the third guide mechanism 6 to enter the painting device 7 for multi-pass painting to obtain a plurality of trapezoidal enameled wires; (5) The trapezoidal enameled wire is synchronously operated through the fourth guide mechanism 8 to the take-up device 9, and is taken up to a spool; The first guide mechanism 2, the second guide mechanism 4, the third guide mechanism 6 and the fourth guide mechanism 8 each have an anti-overturning wire guide wheel group 02, the anti-overturning wire guide wheel group 02 has a plurality of guide grooves 021, and the groove bottom surface of the guide groove 021 is a conical cylindrical surface.

[0019] In the present application, the multiple guiding mechanisms are connected with the forming device 1, the ultrasonic cleaning device 3, the annealing furnace 5, the painting device 7 and the take-up device 9, and the flat wire with a trapezoidal cross section is directly sent to the cleaning and painting processes without take-up, which improves the production efficiency and prevents the damage of the bare wire caused by take-up, and improves the product qualification rate. In the present application, the anti-winding guiding wheel group 02 has a conical surface guiding surface, and the wire is attached to the conical surface, which achieves the anti-winding effect. On the other hand, the relatively thick incoming round wire 01 is wound in the storage cage, and a cage of incoming round wire 01 can be processed to obtain several times the length of the bare wire, and based on the tin-free forming take-up, the wire connection frequency in the production process is greatly reduced, and a cage of incoming round wire 01 needs to be welded only when the incoming round wire 01 is continuously processed to the tail end in the forming device 1.

[0020] Preferably, the inclination angle of the groove bottom surface of the guiding groove 021 is greater than the inclination angle of the inclined surface of the bare wire, and the guiding surfaces of the guiding wheels of the forming device 1, the ultrasonic cleaning device 3, the painting device 7 and the take-up device 9 are all cylindrical surfaces. Based on the conical guiding surface of the guiding mechanism and the cylindrical guiding surface of other devices, the wire shape of the trapezoidal wire is adjusted to prevent the trapezoidal wire from turning towards the thin side and to reduce the vibration of the wire. Further preferably, the difference between the inclination angle of the groove bottom surface of the guiding groove 021 and the inclination angle of the inclined surface of the bare wire is 1°-3°.

[0021] Preferably, the cross section of the bare wire is trapezoidal, the top surface and the bottom surface of the bare wire are inclined surfaces, the included angle between the inclined surface and the symmetry axis of the bare wire is the inclination angle, and the inclination angle is 4°-6°; the inclination angle of the groove bottom surface of the guiding groove 021 is the included angle between the groove bottom surface and the horizontal line. In the present application, the inclination angle of the inclined surface of the bare wire is limited to 4°-6°, and the enameled wire is tightly wound at this angle. When the wire is attached to the groove bottom surface of the guiding groove 021, the center line of the wire is parallel to the horizontal direction or has a reverse included angle with the horizontal line.

[0022] In an embodiment of the present application, the guiding wheel group includes an axle 022 and multiple wheel pieces 023, and the multiple wheel pieces 023 are detachably sleeved on the axle 022, and each wheel piece 023 is provided with a guiding groove 021; The axle 022 is arranged on the rack through an adjustable mounting seat 024, so that the mounting angle of the axle 022 is adjustable.

[0023] By making the wheel piece 023 detachable on the axle 022, the number of the guiding grooves 021 of the guiding wheel group can be adjusted, and in actual production, the number of the wheel pieces 023 can be adjusted according to the number of the wires. For example, the surface of the axle 022 has a key for positioning the wheel piece 023, one side of the wheel piece 023 has a positioning protrusion, and the other side has a positioning groove, and the adjacent two wheel pieces 023 are positioned through the positioning protrusion and the positioning groove.

[0024] Further, the adjustable mounting seat 024 is arranged on the rack through a rotating shaft, and a servo motor is connected to the rotating shaft; the servo motor is used for adjusting the included angle between the axis of the wire guide wheel set and the horizontal plane, that is, the servo motor can drive the rotating shaft to rotate, and then the adjustable mounting rack swings.

[0025] A plurality of visual monitoring cameras are arranged on the production line of the trapezoidal enameled wire, the visual monitoring cameras are used for acquiring images of bare wires and enameled wires, and image processing software is used for judging the surface quality of the bare wires or enameled wires based on the images, such as the number of particles on the surface of the bare wires, whether the paint film has pinholes or not. In the scheme, the image processing software is also used for acquiring the included angle between the line and the horizontal direction, judging whether the line turning angle is within the threshold range, and if the threshold range is exceeded, adjusting the included angle between the axis of the wire guide wheel set and the horizontal plane through the servo motor to further improve the anti-line turning capability. Specifically, the first guide mechanism 2, the second guide mechanism 4, the third guide mechanism 6 and the fourth guide mechanism 8 correspond to the visual monitoring cameras respectively, so as to determine the guide mechanism which needs to be adjusted. Exemplarily, the adjustable mounting seat 024 is fixedly connected with the rotating shaft, the rotating shaft is positioned on the rack through a bearing, and the servo motor is supported by the rack.

[0026] In an embodiment of the present application, the first guide mechanism 2, the second guide mechanism 4, the third guide mechanism 6 and the fourth guide mechanism 8 each include a drive motor 026, and the drive motor 026 is drivingly connected with the wheel shaft 022. The driving speed of the drive motor 026 is used to acquire the line speed, the actual line speed is monitored, the forming speed of the forming device 1, the painting speed of the painting device 7 and the driving speed of each guide mechanism are controlled based on the line speed monitoring, so that the line speed between the forming device 1 and the take-up device 9 is consistent.

[0027] The line speed is detected to ensure the connection of each process and ensure continuous production. Exemplarily, a threshold value of the line speed difference is set, and when the actual line speed between each line driving node exceeds the threshold value, a fault alarm is given to enable the staff to troubleshoot the fault, and within the threshold value, the driving speed of the corresponding line driving node can be adjusted.

[0028] In an embodiment of the present application, in the step (1), the forming device 1 includes a rolling wheel set 11, an annealing channel 12, a forming die 13 and a forming power wheel set 14, and the incoming round wire 01 passes through the rolling wheel set 11, the annealing channel 12, the forming die 13 and the forming power wheel set 14 in sequence to be formed into a bare wire of trapezoidal enameled wire. In the step (3), the annealed bare wire is sized by the sizing mechanism 51 at the outlet of the annealing furnace 5 The annealing in step (1) is used to increase the temperature of the wire so that it can be more easily passed through the forming die 13. The annealing in step (2) is used to soften the wire so that it can be more easily passed around the guide wheels in the painting process to avoid defects in the surface of the paint film. The temperature of the secondary annealing reaches about 300 DEG C, and the slightly deformed flat wire with a trapezoidal cross section can be slightly deformed, however, in the painting process, the thickness of each layer of paint film is in the micron level, and the slight deformation caused by the annealing can still affect the painting quality, therefore, the secondary sizing is performed at the outlet of the annealing furnace 5 to ensure the accurate size of the bare wire and greatly improve the quality of the enameled wire.

[0029] Specifically, the sizing mechanism 51 comprises clamping plates 511, mounting seats 512 and sizing dies 513, the sizing dies 513 are positioned between the two clamping plates 511 through plane bearings, the two clamping plates 511 are slidingly fitted with the mounting seats 512, and the two clamping plates 511 are connected through bolts so that the sizing dies 513 can be freely rotated to adapt to the change of the running angle of the bare wire.

[0030] The die holes of the sizing dies 513 are divided into wire inlet sections, sizing sections and wire outlet sections which are connected in sequence, the inner wall of the wire inlet section is smoothly and transitionally connected with the sizing section, which can achieve the sizing effect and prevent the generation of chippings.

[0031] In an embodiment of the present application, the forming device 1 and the first guide structure have a wire storage mechanism 03, the formed bare wire runs from the forming device 1 to the wire storage mechanism, and then enters the ultrasonic cleaning device 3 after passing through the wire storage mechanism and the first guide mechanism 2. The wire storage mechanism 03 can facilitate the replacement of the wire for welding, provide operation time for welding, and adjust the wire running speed of the previous and subsequent processes. In the present scheme, the incoming round wire 01 can be welded, and the wire can also be connected between the forming device 1 and the wire storage mechanism.

[0032] In an embodiment of the present application, a plurality of incoming round wires 01 are respectively formed into trapezoidal enameled wire bare wires by a plurality of forming devices 1, and the plurality of bare wires are synchronously subjected to ultrasonic cleaning, annealing in the annealing furnace 5, painting in the painting device 7 and winding in the winding device 9 under the guidance of the first guide mechanism 2, the second guide mechanism 4, the third guide mechanism 6 and the fourth guide mechanism 8, and then are respectively wound onto a plurality of spools, thereby realizing high-efficiency production.

[0033] Other configurations and operations of the high-precision painting process of the trapezoidal enameled wire according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0034] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the features defined with "first", "second" can be explicitly or implicitly include one or more of the features, for distinguishing the description of the features, without order, without light and heavy.

[0035] In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0036] In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0037] In the description of the present application, the description of the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A high-precision enamelling process of trapezoidal enameled wire, characterized by, It comprises the following steps: (1) The incoming round wire is shaped into the bare wire of the trapezoidal enameled wire through a plurality of shaping devices, and the bare wire is a flat wire with a trapezoidal cross section; (2) The bare wire shaped by the shaping device is synchronously operated through the first guide mechanism to pass through the ultrasonic cleaning device for cleaning to remove oil stains and debris on the surface of the bare wire; (3) The cleaned bare wire is synchronously operated through the second guide mechanism to pass through the annealing furnace for annealing; (4) The annealed bare wire is synchronously operated through the third guide mechanism to enter the paint coating device for multi-pass paint coating to obtain a plurality of trapezoidal enameled wires; (5) The trapezoidal enameled wire is synchronously operated through the fourth guide mechanism to the take-up device and is taken up to the spool. The first guide mechanism, the second guide mechanism, the third guide mechanism and the fourth guide mechanism respectively have an anti-winding guide wheel set, the anti-winding guide wheel set has a plurality of guide grooves, and the groove bottom surface of the guide groove is a conical cylindrical surface.

2. The process according to claim 1, characterized in that, The inclination angle of the groove bottom surface of the guide groove is greater than the inclination angle of the inclined surface of the bare wire, and the guide surface of the guide wheel of the shaping device, the ultrasonic cleaning device, the paint coating device and the take-up device is a cylindrical surface.

3. The process of claim 2, wherein, The cross section of the bare wire is trapezoidal, the top surface and the bottom surface of the bare wire are inclined surfaces, the included angle between the inclined surface and the symmetry axis of the bare wire is the inclination angle, and the inclination angle is 4°-6°; The inclination angle of the groove bottom surface of the guide groove is the included angle between the groove bottom surface and the horizontal line.

4. The process of claim 1, wherein, The guide wheel set comprises an axle and a plurality of wheel pieces, the plurality of wheel pieces are detachably sleeved on the axle, each wheel piece is provided with a guide groove, and the axle is arranged on the rack through an adjustable mounting seat, so that the mounting angle of the axle can be adjusted. The adjustable mounting seat is arranged on the rack through a rotating shaft, the rotating shaft is connected with a servo motor, and the servo motor is used for adjusting the included angle between the axis of the guide wheel set and the horizontal plane.

5. The process of claim 4, wherein, The first guide mechanism, the second guide mechanism, the third guide mechanism and the fourth guide mechanism respectively comprise a driving motor and a driving connection with the axle.

6. The process of claim 5, wherein, The driving speed of the driving motor is used to obtain the wire running speed, the actual wire running speed is monitored, the wire running speed is monitored, the shaping speed of the shaping device, the paint coating speed of the paint coating device and the driving speed of each guide mechanism are controlled, so that the wire running speed between the shaping device and the take-up device is consistent. In step (1), the shaping device comprises a roller wheel set, an annealing channel, a shaping die and a shaping power wheel set, and the incoming round wire is shaped into the bare wire of the trapezoidal enameled wire through the roller wheel set, the annealing channel, the shaping die and the shaping power wheel set.

7. The process of claim 6, wherein, In step (3), the diameter of the annealed bare wire is adjusted by a diameter adjusting mechanism at the outlet of the annealing furnace. The diameter adjusting mechanism comprises clamping plates, a mounting seat and a diameter adjusting die, the diameter adjusting die is positioned between the two clamping plates through a plane bearing, the two clamping plates are in sliding fit with the mounting seat, and the two clamping plates are connected through bolts.

8. The process of claim 7, wherein, The die hole of the diameter adjusting die is divided into an incoming section, a sizing section and an outgoing section connected in sequence, and the inner wall of the incoming section is smoothly and transitionally connected with the sizing section. The shaping device and the first guide structure have a wire storage mechanism, the shaped bare wire runs from the shaping device to the wire storage mechanism, and enters the ultrasonic cleaning device after passing through the wire storage mechanism and the first guide mechanism.

9. The process of claim 1, wherein, ​ 10. The process according to any one of claims 1 to 9, characterized in that, The plurality of incoming round wires are respectively shaped into the bare wires of the trapezoidal enameled wires by the plurality of shaping devices. The plurality of bare wires are guided by the first guide mechanism, the second guide mechanism, the third guide mechanism and the fourth guide mechanism, and synchronously pass through the ultrasonic cleaning, the annealing furnace, the painting device and the take-up device, and then are respectively taken up to the plurality of spools.

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