Apparatus for manufacturing enameled wire and method for manufacturing enameled wire

Abstract

To provide an enameled wire manufacturing apparatus and a method for manufacturing enameled wire that can suppress scratches on the surface of the conductor and adhesion of fine copper powder to the surface of the conductor during wire drawing. [Solution] The enameled wire manufacturing apparatus includes a mechanism for passing a conductor through a wire drawing die. The enameled wire manufacturing apparatus includes a vibration sensor installed on the wire drawing die or a component fixed to the wire drawing die, and a modification unit configured to change at least one of the position of the wire drawing die and the orientation of the wire drawing die.

Description

【Technical Field】 【0001】 The present disclosure relates to an enameled wire manufacturing apparatus and an enameled wire manufacturing method. 【Background Art】 【0002】 An enameled wire includes a conductor and an enamel coating. The conductor is mainly made of copper. The enamel coating covers the surface of the conductor. Patent Document 1 describes a method for manufacturing an enameled wire. In the method for manufacturing an enameled wire, wire drawing and annealing are repeatedly performed on a thick conductor having a circular cross-sectional shape to process it into a conductor having a desired diameter with a circular cross-sectional shape or a conductor having desired longitudinal and lateral sizes with a rectangular cross-sectional shape. Next, a paint is applied to the surface of the conductor to form a coating film. The paint contains polyimide or polyamideimide. Thereafter, firing is performed to form an enamel coating. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2015-36149 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 During wire drawing, the surface of the conductor may be scratched or fine copper powder may adhere to the surface of the conductor. If there are scratches or copper powder on the surface of the conductor, problems such as poor appearance, foaming starting from the scratches, dimensional defects, and deterioration of the withstand voltage characteristics due to the conductor curling up or scratch protrusions are likely to occur. 【0005】 In one aspect of the present disclosure, it is preferable to provide an enameled wire manufacturing apparatus and an enameled wire manufacturing method that can suppress the surface of the conductor from being scratched or fine copper powder from adhering to the surface of the conductor during wire drawing. 【Means for Solving the Problems】 【0006】 One aspect of the present disclosure is an apparatus for manufacturing enameled wire, which includes a mechanism for passing a conductor through a wire drawing die. The apparatus for manufacturing enameled wire includes a wire drawing die, a vibration sensor installed on a component fixed to the wire drawing die, and a modification unit configured to change at least one of the position of the wire drawing die and the orientation of the wire drawing die. 【0007】 One aspect of this disclosure, the enameled wire manufacturing apparatus, can suppress scratches on the conductor surface and adhesion of fine copper powder to the conductor surface during wire drawing. 【0008】 Another aspect of the present disclosure is a method for manufacturing enameled wire, which includes the step of passing a conductor through a wire drawing die. In this method for manufacturing enameled wire, the position of the wire drawing die and at least one of the orientation of the wire drawing die are changed based on data from a vibration sensor installed on the wire drawing die or on a component fixed to the wire drawing die. 【0009】 Another aspect of this disclosure, the method for manufacturing enameled wire, makes it possible to suppress scratches on the surface of the conductor and the adhesion of fine copper powder to the surface of the conductor during wire drawing. [Brief explanation of the drawing] 【0010】 [Figure 1] This is an explanatory diagram showing the configuration of an enameled wire manufacturing apparatus. [Figure 2] This is a cross-sectional view showing the cross-sectional shape of a rolled conductor. [Figure 3] This is a cross-sectional view showing the cross-sectional shape of a rectangular conductor. [Figure 4] This is an explanatory diagram showing the configuration of a flat-angle wire drawing machine. [Figure 5] This is an explanatory diagram showing the display unit that displays data sent from the vibration sensor. [Figure 6] This is an explanatory diagram illustrating the change in the position of the wire drawing die in the right, left, upward, and downward directions. [Figure 7] This is an explanatory diagram showing the rotation of a flat wire drawing die around the first axis of rotation, and the pitch angle. [Figure 8] This is an explanatory diagram illustrating the rotation of a flat wire drawing die around the second axis of rotation, and the yaw angle. [Figure 9] This is an explanatory diagram illustrating the rotation of a flat wire drawing die around the third rotation axis and the roll angle. [Modes for carrying out the invention] 【0011】 Exemplary embodiments of this disclosure will be described with reference to the drawings. <First Embodiment> 1. Overall configuration of the enameled wire manufacturing apparatus 1 The overall configuration of the enameled wire manufacturing apparatus 1 will be explained based on Figures 1 to 3. As shown in Figure 1, the enameled wire manufacturing apparatus 1 includes a bobbin 3, a round wire drawing machine 5, a flat rolling mill 7, an annealing furnace 9, a flat wire drawing machine 11, an annealing furnace 13, a paint application machine 15, a baking furnace 17, and a winding machine 19. A linear conductor 23 is wound around the bobbin 3. 【0012】 When manufacturing enameled wire using the enameled wire manufacturing apparatus 1, the conductor 23 is drawn from the bobbin 3 and travels along a path that passes through the round wire drawing machine 5, the flat rolling mill 7, the annealing furnace 9, the flat wire drawing machine 11, the annealing furnace 13, the paint coating machine 15, and the baking furnace 17 in that order, before being wound onto the winding machine 19. However, the conductor 23 passes through the section including the paint coating machine 15 and the baking furnace 17 multiple times. 【0013】 The material of the conductor 23 is, for example, copper or a copper alloy. The cross-sectional shape of the conductor 23 is circular until the flat rolling process described later is performed. The cross-section of the conductor 23 is the cross-section perpendicular to the longitudinal direction of the conductor 23. 【0014】 The round wire drawing machine 5 draws a conductor 23 having a circular cross-sectional shape. The flat rolling mill 7 performs flat rolling on the running conductor 23. The conductor 23 on which flat rolling has been performed is designated as the rolled conductor 23A. As shown in FIG. 2, the cross-sectional shape of the rolled conductor 23A is a shape composed of two sides 24A and 24B parallel to each other and two arc-shaped end faces 26A and 26B. In the cross-section, the shapes of the sides 24A and 24B are straight lines. In the cross-section, the lengths of the sides 24A and 24B are greater than the lengths of the end faces 26A and 26B. The annealing furnace 9 anneals the rolled conductor 23A. 【0015】 The flat wire drawing machine 11 performs flat wire drawing on the running rolled conductor 23A. Flat wire drawing is a process of drawing the rolled conductor 23A. The conductor 23 on which flat wire drawing has been performed is designated as the flat conductor 23B. The configuration of the flat wire drawing machine 11 will be described later. 【0016】 As shown in FIG. 3, the cross-sectional shape of the flat conductor 23B is rectangular. The long sides of the rectangle are the sides 24A and 24B. The short sides 22A and 22B of the rectangle are sides derived from the end faces 26A and 26B in the rolled conductor 23A. 【0017】 As shown in FIG. 1, in the flat wire drawing machine 11, the direction in which the conductor 23 runs is defined as the running direction TR. The direction opposite to the running direction TR is defined as the upstream direction US. The annealing furnace 13 anneals the flat conductor 23B. The paint applicator 15 forms a coating film of enamel paint with a predetermined thickness on the surface of the flat conductor 23B by applying enamel paint to the surface of the flat conductor 23B. 【0018】 The baking furnace 17 applies heat to the running flat conductor 23B on which a coating film of enamel paint with a predetermined thickness has been formed by the paint applicator 15 to form a film. As shown in FIG. 1, the application of enamel paint by the paint applicator 15 and the film formation by the baking furnace 17 are repeated. As a result, an enameled wire 25 having a predetermined film thickness is manufactured. The enameled wire 25 is wound by the take-up machine 19.​​​A method for forming the coating is as follows: Enamel wire coating is applied to the surface of the rectangular conductor 23B. The enamel wire coating is, for example, a coating containing a resin and a solvent. Next, the solvent in the enamel wire coating applied to the surface of the rectangular conductor 23B is evaporated, and the resin in the enamel wire coating is cured. After the evaporation of the solvent and curing of the resin, the enameled wire 25 is formed. 【0020】 2. Configuration of the flat-angle wire drawing machine 11 The configuration of the flat wire drawing machine 11 will be explained based on Figures 4 to 9. As shown in Figure 4, the flat wire drawing machine 11 includes a flat wire drawing die 31, a die holder 32, a vibration sensor 33, a display unit 34, and a change unit 36. 【0021】 The rectangular wire drawing die 31 is equipped with a rectangular processing hole 35. The conductor 23 passes through the processing hole 35 while traveling in the direction TR. Before passing through the processing hole 35, the conductor 23 is a rolled conductor 23A. After passing through the processing hole 35, the conductor 23 is a rectangular conductor 23B. 【0022】 The flat wire drawing machine 11 corresponds to the mechanism for passing the rolled conductor 23A through the flat wire drawing die 31. The process of the conductor 23 passing through the flat wire drawing machine 11 corresponds to the process of passing the rolled conductor 23A through the flat wire drawing die 31. 【0023】 The die holder 32 holds the flat wire drawing die 31. The die holder 32 corresponds to the components fixed to the flat wire drawing die 31. In this embodiment, the vibration sensor 33 is installed on the die holder 32. The vibration sensor 33 detects vibrations of the flat wire drawing die 31 and the die holder 32 and sends data to the display unit 34. The data sent represents the vibrations of the flat wire drawing die 31 and the die holder 32. The method of sending the data may be wireless or wired. 【0024】 The vibration sensor 33 detects vibrations in the X, Y, and Z axes, respectively. Therefore, the vibration sensor 33 detects vibrations in three axes. The X axis is parallel to the axial direction of the machined hole 35. The Y axis is parallel to the rightward R and leftward L directions. 【0025】 Rightward direction R is the rightward direction when viewing the flat-angle wire drawing die 31 from a viewpoint on the side of the running direction TR. Leftward direction L is the leftward direction when viewing the flat-angle wire drawing die 31 from a viewpoint on the side of the running direction TR. Rightward direction R and leftward direction L correspond to the horizontal direction. The Z-axis is an axis parallel to the upward direction U and downward direction D. Upward direction U is the vertical and upward direction. Downward direction D is the opposite direction of upward direction U. Upward direction U and downward direction D correspond to the vertical direction. 【0026】 The display unit 34 displays data sent from the vibration sensor 33. For example, as shown in Figure 5, the display unit 34 displays vibration data V_X on the X-axis, vibration data V_Y on the Y-axis, and vibration data V_Z on the Z-axis, each in graph form. In the graph shown in Figure 5, the horizontal axis represents time, and the vertical axis represents acceleration. As shown in Figure 4, the display unit 34 consists of a monitor 34A and a computer 34B. The data is displayed on the monitor 34A. 【0027】 The modification unit 36 ​​is a mechanism for changing the position and orientation of the flat wire drawing die 31. As shown in Figure 6, the modification unit 36 ​​can move the flat wire drawing die 31 to the right (R) or to the left (L), thereby changing the horizontal position of the flat wire drawing die 31. 【0028】 As shown in Figure 6, the modification unit 36 ​​can move the flat wire drawing die 31 upward U or downward D, thereby changing the vertical position of the flat wire drawing die 31. As shown in Figure 7, the modification unit 36 ​​can rotate the flat wire drawing die 31 around the first rotation axis 41, thereby changing the orientation of the flat wire drawing die 31. The first rotation axis 41 is parallel to the right R and the left parallel L. When viewed from a viewpoint in the left L direction, the first rotation axis 41 is at the center of the flat wire drawing die 31 and coincides with the processed hole 35. 【0029】 When the flat wire drawing die 31 is rotated around the first rotation axis 41, the pitch angle θ changes. The pitch angle θ is the angle formed between the first reference line 51 fixed to the flat wire drawing die 31 and the conductor 23 when viewed from a viewpoint located to the left L. The first reference line 51 is parallel to the axial direction of the processed hole 35. 【0030】 As shown in Figure 8, the modification unit 36 ​​can rotate the flat wire drawing die 31 around the second rotation axis 42, thereby changing the orientation of the flat wire drawing die 31. The second rotation axis 42 is parallel to the upward direction U and the downward direction D. When viewed from a viewpoint in the upward direction U, the second rotation axis 42 is at the center of the flat wire drawing die 31 and is located in a position that coincides with the processed hole 35. 【0031】 When the wire drawing die 31 is rotated around the second rotation axis 42, the yaw angle δ changes. The yaw angle δ is the angle formed between the first reference wire 51 fixed to the wire drawing die 31 and the conductor 23, when viewed from a viewpoint in the upward direction U. 【0032】 As shown in Figure 9, the modification unit 36 ​​can rotate the flat wire drawing die 31 around the third rotation axis 43, thereby changing the orientation of the flat wire drawing die 31. The third rotation axis 43 is parallel to the axial direction of the processed hole 35. When viewed from a viewpoint in the travel direction TR, the third rotation axis 43 is located in a position that coincides with the processed hole 35. 【0033】 When the flat wire drawing die 31 is rotated around the third rotation axis 43, the roll angle γ changes. The roll angle γ is the angle formed by the second reference line 52 fixed to the flat wire drawing die 31 and the third reference line 53 fixed to the conductor 23, when viewed from a viewpoint in the travel direction TR. The second reference line 52 is perpendicular to the axial direction of the processed hole 35. The third reference line 53 is perpendicular to the sides 24A and 24B. 【0034】 3. Adjustment of the position and orientation of the flat wire drawing die 31 When manufacturing enameled wire, the vibration sensor 33 detects vibrations of the flat wire drawing die 31 and the die holder 32 and sends the data to the display unit 34. The display unit 34 displays the data sent from the vibration sensor 33. The data displayed on the display unit 34 represents the magnitude of vibrations of the flat wire drawing die 31 in the X, Y, and Z axes. 【0035】 The operator, or a control unit (not shown), uses the modification unit 36 ​​to change at least one of the position and orientation of the wire drawing die 31 based on the data displayed on the display unit 34. For example, the control unit controls the modification unit 36 ​​based on the data from the vibration sensor 33 to reduce the vibration of the wire drawing die 31. For example, by alternately repeating the steps of changing the position or orientation of the wire drawing die 31 by a predetermined amount in a predetermined direction and checking the data displayed on the display unit 34, the position and orientation of the wire drawing die 31 are adjusted so that the vibration of the wire drawing die 31 in the X, Y, and Z axes is minimized. 【0036】 The position and orientation of the flat wire drawing die 31 may be adjusted before starting the enameled wire manufacturing process, or it may be adjusted during the enameled wire manufacturing process. For example, the position and orientation of the flat wire drawing die 31 can be adjusted periodically during the enameled wire manufacturing process. 【0037】 4. Effects of the enameled wire manufacturing apparatus 1 and the enameled wire manufacturing method (1A) The vibration of the flat wire drawing die 31 increases when the rolled conductor 23A is making contact with the flat wire drawing die 31 on one side. When there is contact on one side, the surface of the rolled conductor 23A is easily scratched. Also, when there is contact on one side, fine copper powder is generated due to the wear of the rolled conductor 23A and easily adheres to the surface of the rolled conductor 23A. The condition of contact on one side is when a part of the inner surface of the processed hole 35 is making stronger contact with the rolled conductor 23A than other parts. 【0038】 Using the enameled wire manufacturing apparatus 1 and the enameled wire manufacturing method, the position and orientation of the flat wire drawing die 31 can be adjusted so that the vibration of the flat wire drawing die 31 in the X, Y, and Z axes is minimized. When the vibration of the flat wire drawing die 31 is minimal, the rolled conductor 23A is not making uneven contact with the flat wire drawing die 31, and scratches and fine copper powder are less likely to adhere to the surface of the rolled conductor 23A. 【0039】 Therefore, by using the enameled wire manufacturing apparatus 1 and the enameled wire manufacturing method, it is possible to suppress scratches and fine copper powder from adhering to the surface of the rolled conductor 23A. 【0040】 (1B) The vibration sensor 33 can detect vibrations in three axes. By using the enameled wire manufacturing apparatus 1 and the enameled wire manufacturing method, the position and orientation of the flat wire drawing die 31 can be adjusted so that vibrations in all three axes are reduced. As a result, scratches and fine copper powder adhering to the surface of the rolled conductor 23A can be further suppressed. 【0041】 (1C) By using the enameled wire manufacturing apparatus 1 and the enameled wire manufacturing method, the horizontal position, vertical position, pitch angle θ, yaw angle δ, and roll angle γ of the flat wire drawing die 31 can be changed. As a result, the vibration of the flat wire drawing die 31 can be further reduced. Consequently, scratches and fine copper powder adhering to the surface of the rolled conductor 23A can be further suppressed. 【0042】 (1D) As described above, by using the enameled wire manufacturing apparatus 1 and the enameled wire manufacturing method, the position and orientation of the flat wire drawing die 31 can be adjusted so that the vibration of the flat wire drawing die 31 in the X, Y, and Z axes is minimized. The state in which the vibration of the flat wire drawing die 31 is minimal is a state in which the rolled conductor 23A does not make uneven contact with the flat wire drawing die 31, and the wear of the flat wire drawing die 31 progresses uniformly. 【0043】 Therefore, by using the enameled wire manufacturing apparatus 1 and the enameled wire manufacturing method, the lifespan of the flat wire drawing die 31 can be extended and the reprocessing of the flat wire drawing die 31 can be facilitated. 【0044】 <Other Embodiments> Although embodiments of the present disclosure have been described above, the present disclosure is not limited to the embodiments described above and can be implemented in various modified forms. 【0045】 (1) The vibration sensor 33 may be installed on the flat wire drawing die 31. (2) The modification part 36 may change only one of the position and orientation of the flat wire drawing die 31. The modification part 36 may not change some of the horizontal position, vertical position, pitch angle θ, yaw angle δ, and roll angle γ of the flat wire drawing die 31. 【0046】 (3) The display unit 34 may display a composite vibration wave of vibrations in two or more axes. In this case, the user can understand the overall magnitude of vibrations in two axes. The display unit 34 may, for example, display a composite vibration wave of vibrations in two axes. The display unit 34 may, for example, display a composite vibration wave of vibrations in three axes. (4) The conductor 23 drawn by the flat wire drawing die 31 may be a round wire. In this case, the modification section 36 may not change the roll angle γ. 【0047】 (5) The directions of the X, Y, and Z axes may be different from those of the first embodiment, as long as they are orthogonal to each other. (6) The component on which the vibration sensor 33 is installed may be a component other than the die holder 32, and may be a component fixed to the flat wire drawing die 31. 【0048】 (7) The vibration sensor 33 may detect vibrations of one axis. The one axis may be, for example, the X axis, Y axis, and Z axis. The vibration sensor 33 may detect vibrations of two axes. The two axes may be, for example, the X axis and Y axis, the Y axis and Z axis, or the Z axis and X axis. (8) The method by which the display unit 34 displays the data may differ from that of the first embodiment. For example, the magnitude of the vibration or acceleration can be displayed numerically. Alternatively, a figure or the like whose size and length change according to the magnitude of the vibration or acceleration can be displayed. (9) The direction in which the modification unit 36 ​​moves the flat wire drawing die 31 may be a direction other than the horizontal or vertical direction. The directions of the first rotation axis 41, the second rotation axis 42, and the third rotation axis 43 may be different from those of the first embodiment. (10) The flat wire drawing machine 11 does not need to have a display unit 34. In this case, for example, a control unit (not shown) controls the modification unit 36 ​​based on data from the vibration sensor 33 to change at least one of the position and orientation of the flat wire drawing die 31 so that the vibration of the flat wire drawing die 31 is reduced. 【0049】 (11) The function of one component in each of the above embodiments may be divided among multiple components, or the function of multiple components may be performed by one component. Also, some of the configurations of each of the above embodiments may be omitted. Also, at least some of the configurations of each of the above embodiments may be added to, replaced with, etc., the configurations of other embodiments. 【0050】 (12) In addition to the enameled wire manufacturing apparatus 1 described above, the present disclosure can also be realized in various forms, such as a system that uses the enameled wire manufacturing apparatus 1 as a component, a vibration detection method, a vibration display method, a method for adjusting the position and orientation of the wire drawing die, etc. 【0051】 [Technical Concept Disclosed in This Specified Specification] [Item 1] An enameled wire manufacturing apparatus equipped with a mechanism for passing a conductor through a wire drawing die, A vibration sensor installed on the wire drawing die, or on a component fixed to the wire drawing die, A modification unit configured to change at least one of the position of the drawing die and the orientation of the drawing die, Equipped with, Enamel wire manufacturing equipment. [Item 2] The apparatus for manufacturing enameled wire as described in item 1, The vibration sensor is configured to detect vibrations in one, two, or three axes. Enamel wire manufacturing equipment. [Item 3] An apparatus for manufacturing enameled wire as described in item 1 or 2, The system further includes a display unit configured to display data from the vibration sensor. Enamel wire manufacturing equipment. [Item 4] The apparatus for manufacturing enameled wire as described in item 3, The display unit is configured to display a composite vibration wave of vibrations in two or more axes. Enamel wire manufacturing equipment. [Item 5] An enameled wire manufacturing apparatus described in any one of items 1 to 4, The modification unit is configured to change one or more of the horizontal position, vertical position, pitch angle, yaw angle, and roll angle of the wire drawing die. Enamel wire manufacturing equipment. [Item 6] An enameled wire manufacturing apparatus described in any one of items 1 to 5, The system further includes a control unit configured to control the modification section so as to reduce the vibration of the wire drawing die based on the data from the vibration sensor. Enamel wire manufacturing equipment. [Item 7] A method for manufacturing enameled wire, which includes the step of passing a conductor through a wire drawing die, Based on data from a vibration sensor installed on the wire drawing die or a component fixed to the wire drawing die, at least one of the position of the wire drawing die and the orientation of the wire drawing die is changed. A method for manufacturing enameled wire. [Item 8] A method for manufacturing enameled wire as described in item 7, Display the aforementioned data, A method for manufacturing enameled wire. [Item 9] A method for manufacturing enameled wire as described in item 7 or 8, Based on the data from the vibration sensor, at least one of the position of the wire drawing die and the orientation of the wire drawing die is changed so that the vibration of the wire drawing die is reduced. A method for manufacturing enameled wire. [Explanation of symbols] 【0052】 1...Enamel wire manufacturing equipment, 3...Bobbin, 5...Round wire drawing machine, 7...Flat rolling mill, 9...Annealing furnace, 11...Flat wire drawing machine, 13...Annealing furnace, 15...Paint application machine, 17...Baking furnace, 19...Winding machine, 22A, 22B...Short side, 23...Conductor, 23A...Rolled conductor, 23B...Flat conductor, 24A, 24B...Side, 25...Enamel wire, 26A, 26B...End face, 31...Flat wire drawing die, 32...Die Chair holder, 33...Vibration sensor, 34...Display unit, 34A...Monitor, 34B...Computer, 35...Machined hole, 36...Modification unit, 41...First rotation axis, 42...Second rotation axis, 43...Third rotation axis, 51...First reference line, 52...Second reference line, 53...Third reference line, V_X...Vibration data on the X axis, V_Y...Vibration data on the Y axis, V_Z...Vibration data on the Z axis

Claims

[Claim 1] An enameled wire manufacturing apparatus equipped with a mechanism for passing a conductor through a wire drawing die, A vibration sensor installed on the wire drawing die, or on a component fixed to the wire drawing die, A modification unit configured to change at least one of the position of the drawing die and the orientation of the drawing die, Equipped with, Enamel wire manufacturing equipment. [Claim 2] An apparatus for manufacturing enameled wire according to claim 1, The vibration sensor is configured to detect vibrations in one, two, or three axes. Enamel wire manufacturing equipment. [Claim 3] An apparatus for manufacturing enameled wire according to claim 1 or 2, The system further includes a display unit configured to display data from the vibration sensor. Enamel wire manufacturing equipment. [Claim 4] An apparatus for manufacturing enameled wire according to claim 3, The display unit is configured to display a composite vibration wave of vibrations in two or more axes. Enamel wire manufacturing equipment. [Claim 5] An apparatus for manufacturing enameled wire according to claim 1 or 2, The modification unit is configured to change one or more of the horizontal position, vertical position, pitch angle, yaw angle, and roll angle of the wire drawing die. Enamel wire manufacturing equipment. [Claim 6] An apparatus for manufacturing enameled wire according to claim 1 or 2, The system further includes a control unit configured to control the modification section so as to reduce the vibration of the wire drawing die based on the data from the vibration sensor. Enamel wire manufacturing equipment. [Claim 7] A method for manufacturing enameled wire, which includes the step of passing a conductor through a wire drawing die, Based on data from a vibration sensor installed on the wire drawing die or a component fixed to the wire drawing die, at least one of the position of the wire drawing die and the orientation of the wire drawing die is changed. A method for manufacturing enameled wire. [Claim 8] A method for manufacturing enameled wire according to claim 7, Display the aforementioned data, A method for manufacturing enameled wire. [Claim 9] A method for manufacturing an enameled wire according to claim 7 or 8, Based on the data from the vibration sensor, at least one of the position of the wire drawing die and the orientation of the wire drawing die is changed so that the vibration of the wire drawing die is reduced. A method for manufacturing enameled wire.

Images