JP4497122B2 - COIL MANUFACTURING METHOD, COIL TERMINAL CORRECTION METHOD, COIL MANUFACTURING APPARATUS, AND COIL TERMINAL ELECTRIC SHAFT DEVICE - Google Patents

Description

  The present invention relates to a coil manufacturing method, a coil terminal equivalent part cutting method, a coil manufacturing apparatus, and a coil terminal equivalent part cutting apparatus, and more particularly, for a coil in which one end or the other end of a conductor constituting the coil is a user terminal. The present invention relates to a manufacturing method, a method of cutting a coil terminal equivalent part, a coil manufacturing apparatus, and a coil terminal equivalent part cutting apparatus.

  Conventionally, there has been known a coil in which one end portion and the other end portion of a flat wire form a terminal equivalent portion, and a portion between one end portion and the other end portion forms a coil portion. The part may be used as a user terminal. In such a terminal equivalent portion of the coil, the insulating coating covering the periphery of the flat wire is removed.

Japanese Patent Laying-Open No. 2005-303002 (Patent Document 1) describes that the insulating coating of the terminal equivalent portion of the coil having such a configuration is peeled off as a step in the coil manufacturing method. A part of the conducting wire, which is a portion corresponding to the terminal of the coil, is stripped of the insulation coating, and then is a rectangular conducting wire. And the coiled part is spirally wound so that the axis is oriented in the thickness direction of the flat conductor, and the one end and the other end of the flat conductor are the terminal equivalent.
JP-A-2005-303002

  However, in the conventional coil manufacturing method described above, as described above, the insulation coating is peeled off in advance for a portion of the conductor and corresponding to the terminal portion of the coil, and then the rectangular conductor is wound spirally. Since the coil portion and the terminal-corresponding portion were provided by turning, variation may occur in the position where the insulating coating was peeled off. Further, the portion corresponding to the terminal may be scraped off and peeled more than necessary, and the wear of the grindstone and the like used for stripping the insulating coating was great.

  If variation occurs in the position where the insulation coating is peeled off, a portion where the insulation coating is peeled off is included in the portion of the flat wire constituting the coil portion, which causes a problem of short-circuiting in the coil portion. In addition, it is conceivable to expand the width by squashing the corresponding portion of the terminal so as to match the land pattern on the mounting board. However, when flattened in this way, there is a problem that the flat conductor has a predetermined thickness and is not easily crushed. . Furthermore, there is a case where a crushed terminal equivalent part is bent to form a so-called user terminal. However, when the terminal is bent in this way, there is a problem that cracks or cracks occur due to the effect of metal hardening of the terminal equivalent part.

  Therefore, according to the present invention, the portion where the insulation coating is peeled off can be made into a terminal equivalent portion with high positional accuracy, and is easily crushed when the terminal equivalent portion is crushed, and cracks and cracks occur when the terminal equivalent portion is bent. It is an object of the present invention to provide a coil manufacturing method, a coil terminal equivalent portion cutting method, a coil manufacturing apparatus, and a coil terminal equivalent portion cutting device that prevent the occurrence of the above.

In order to achieve the above-mentioned object, the present invention is configured to wind an insulation-coated flat conductor in a spiral shape so that the axis is oriented in the thickness direction of the flat conductor, Forming a coil corresponding to a terminal and forming a coil in which a portion between the one end and the other end forms a spiral coil portion, and each peripheral surface is provided with an abrasive and the peripheral surfaces are arranged opposite to each other A first grinding roller and a second grinding roller, the rotation axes of which are parallel to each other, and the first grinding roller has a positional relationship in which the rotation axis of the first grinding roller is parallel to the extending direction of the terminal equivalent portion. The roller abuts against one end surface of the flat conductor in the thickness direction of the terminal equivalent portion and can grind the one end surface side, and the rotation axis of the second grinding roller and the extending direction of the terminal equivalent portion are Due to the parallel positional relationship, the second grinding roller contacts the other end surface in the thickness direction of the terminal equivalent portion of the flat wire, and the other end By the side grinding possible cutting device, removing a portion of the flat conductor wire with insulating coating by scraping off the one end surface and other end surface in the thickness direction of the flat conductor wire in the terminal corresponding portion, the terminal And a step of crushing a corresponding portion in the thickness direction of the flat wire.

  A rectangular conductor wire with insulation coating is spirally wound so that the axis is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire form a terminal equivalent portion, and one end portion and the other end portion Forming a coil in which the portion between the two forms a spiral coil portion, and by removing one end surface and the other end surface of the flat conductor in the thickness direction at the terminal equivalent portion, part of the flat conductor is removed together with the insulation coating Therefore, the insulating coating can be peeled off at an accurate position in the terminal equivalent portion. For this reason, it is possible to prevent a short circuit in the coil portion, which occurs when the position where the insulating coating is peeled is shifted and the flat wire in the coil portion is peeled off. In addition, since the amount of the insulation coating can be minimized, it is possible to prevent the parts corresponding to the terminals from being scraped and removed more than necessary, and to minimize the wear of the grindstone used to remove the insulation coating. Can be suppressed.

  In addition, since the thickness of the flat wire can be reduced by removing a part of the flat wire, the thin flat wire can be crushed in the step of crushing the terminal equivalent portion in the thickness direction of the flat wire, Can be easily. Further, when the flat conductor is crushed, metal hardening occurs, but since the flat conductor is thin, the influence of metal hardening can be reduced. Therefore, when the terminal equivalent part is used as the user terminal and the terminal equivalent part is used, it is possible to prevent cracks and cracks from being generated and to prevent the terminal equivalent part from being cut.

In addition, the present invention provides a rectangular conductor wire with insulation coating wound spirally so that the axial center is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire constitute a terminal equivalent portion. A first grinding in which a portion between the one end portion and the other end portion forms a spiral coil portion , a grinding material is provided on each peripheral surface, the peripheral surfaces are opposed to each other, and the rotation axes are parallel to each other. The first grinding roller has a terminal-corresponding portion of the flat conductor in a positional relationship in which the rotation axis of the first grinding roller and the extending direction of the terminal-corresponding portion are parallel to each other. The second grinding roller is in contact with one end surface in the thickness direction so that the one end surface side can be ground, and the second grinding roller has a positional relationship in which the rotation axis of the second grinding roller is parallel to the extending direction of the terminal equivalent portion. By a shaving device that abuts against the other end surface in the thickness direction of the corresponding portion of the flat wire and can grind the other end surface side. It provides a cutting method for terminal-corresponding portion of the coil to remove a portion of the flat conductor wire with insulating coating by scraping off the one end surface and other end surface thickness direction of the flat conductor wire in the terminal corresponding portion.

  A rectangular conductor wire with insulation coating is spirally wound so that the axis is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire form a terminal equivalent portion, and one end portion and the other end portion For the coil in which the portion between the two portions forms a spiral coil portion, the flat wire is removed together with the insulation coating by scraping off one end surface and the other end surface of the flat wire in the thickness direction at the terminal equivalent portion. A part of the conducting wire can be removed to reduce the thickness of the flat conducting wire. For this reason, when performing the process which crushes a terminal equivalent part in the thickness direction of a flat conducting wire, a thin flat conducting wire can be crushed and crushing can be made easy. Further, when the flat conductor is crushed, metal hardening occurs, but since the flat conductor is thin, the influence of metal hardening can be reduced. Therefore, when the terminal equivalent part is used as the user terminal and the terminal equivalent part is used, it is possible to prevent cracks and cracks from being generated and to prevent the terminal equivalent part from being cut.

In addition, the present invention provides a rectangular conductor wire with insulation coating wound spirally so that the axial center is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire constitute a terminal equivalent portion. A coil forming apparatus for forming a coil in which a portion between the one end and the other end forms a spiral coil, and one end surface and the other end surface in the thickness direction of the flat wire at the terminal equivalent portion A cutting device for removing a part of the flat conducting wire together with the insulating coating, and a crushing device for crushing the terminal equivalent portion in the thickness direction of the flat conducting wire, Each of which has a first grinding roller and a second grinding roller, each of which is provided with a grinding material on the peripheral surface thereof, the peripheral surfaces of which are opposed to each other and whose rotational axes are parallel to each other, the rotational shaft of the first grinding roller and the terminal The first grinding roller has a positional relationship in which the extending direction of the corresponding part is parallel to the flat conductor. The one end face side can be ground by abutting against the one end face in the thickness direction of the child equivalent part, and the rotation axis of the second grinding roller and the extending direction of the terminal equivalent part are parallel to each other. second grinding roller is providing contact producing other end face side of the grinding possible der Ru coil apparatus other end face in the thickness direction of the terminal corresponding portion of the flat conductor wire.

  A rectangular conductor wire with insulation coating is spirally wound so that the axis is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire form a terminal equivalent portion, and one end portion and the other end portion A coil forming device for forming a coil in which the portion between the two forms a spiral coil portion, and by cutting off one end surface and the other end surface in the thickness direction of the flat rectangular wire at the terminal equivalent portion, Since it has a shaving device for removing a part and a crushing device for crushing the terminal equivalent part in the thickness direction of the flat wire, the insulating coating can be removed after the coil is formed.

  For this reason, the insulating coating can be peeled off at an accurate position in the terminal equivalent portion. For this reason, it is possible to prevent a short circuit in the coil portion, which occurs when the position where the insulating coating is peeled is shifted and the flat wire in the coil portion is peeled off.

  In addition, since the terminal equivalent portion has a shaving device for removing a part of the rectangular conductor wire along with the insulation coating by scraping one end surface and the other end surface in the thickness direction of the rectangular conductor wire, the terminal equivalent portion is formed with the thickness of the rectangular conductor wire. In the case of crushing in the vertical direction, the thin flat conductor wire partially removed by the shaving device can be crushed, and crushing can be facilitated. Further, when the flat conductor is crushed, metal hardening occurs, but since the flat conductor is thin, the influence of metal hardening can be reduced. Therefore, when the terminal equivalent part is used as the user terminal and the terminal equivalent part is used, it is possible to prevent cracks and cracks from being generated and to prevent the terminal equivalent part from being cut.

Wherein the cutting device, the first grinding roller and the second grinding roller, as the peripheral surface of the first grinding roller and the second grinding roller which mutually face each other are moved in opposite directions It is preferable to rotate.

  The first grinding roller and the second grinding roller rotate so that the circumferential surfaces of the first grinding roller and the second grinding roller facing each other move in opposite directions. Such a load and the load applied to the flat conducting wire from the second grinding roller can be offset. For this reason, it is possible to prevent the flat conductive wire from being bent, and it is possible to evenly cut the one end surface and the other end surface in the thickness direction of the terminal equivalent portion.

In addition, the present invention provides a rectangular conductor wire with insulation coating wound spirally so that the axial center is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire constitute a terminal equivalent portion. A portion corresponding to a terminal of a coil in which a portion between the one end portion and the other end portion forms a spiral coil portion, and a grinding material is provided on each peripheral surface, and the peripheral surfaces are arranged to face each other and rotate. The first grinding roller has a first grinding roller and a second grinding roller whose axes are parallel to each other, and the first grinding roller has a positional relationship in which the rotation axis of the first grinding roller and the extending direction of the corresponding terminal portion are parallel to each other . The insulating coating on the one end face side and a part of the flat conducting wire can be ground by contacting the one end face in the thickness direction of the terminal-corresponding portion of the flat conducting wire, and the rotating shaft of the second grinding roller second grinding roller is the thickness direction of the terminal corresponding portion of the flat conductor wire in a positional relationship where the extending direction of the terminal corresponding portion is parallel The first grinding roller and the second grinding roller are opposed to each other so that the insulating coating on the other end surface side and a part of the flat wire can be ground by contacting the other end surface. There is provided a terminal equivalent part cutting device for a coil that rotates so that peripheral surfaces of a roller and a second grinding roller move in opposite directions.

  Each has a first grinding roller and a second grinding roller, each of which is provided with a grinding material, the circumferential surfaces are opposed to each other, and the rotation axes are parallel to each other, and the first grinding roller has a thickness corresponding to a terminal of the flat wire. A part of the insulation coating on one end side and the flat conductor can be ground by abutting on one end face in the direction, and the second grinding roller abuts on the other end face in the thickness direction of the terminal equivalent portion of the flat conductor and the other end face Because it is possible to grind a part of the insulation coating and the rectangular conductor on the side, when thinning the terminal equivalent part in the thickness direction of the rectangular conductor, the thin rectangular conductor partially removed by the shaving device can be crushed, Crushing can be facilitated. Further, when the flat conductor is crushed, metal hardening occurs, but since the flat conductor is thin, the influence of metal hardening can be reduced. Therefore, when the terminal equivalent part is used as the user terminal and the terminal equivalent part is used, it is possible to prevent cracks and cracks from being generated and to prevent the terminal equivalent part from being cut.

  In addition, the first grinding roller and the second grinding roller rotate so that the circumferential surfaces of the first grinding roller and the second grinding roller that face each other move in opposite directions. The load applied to the conducting wire and the load applied to the flat conducting wire from the second grinding roller can be offset. For this reason, it is possible to prevent the flat conductive wire from being bent, and it is possible to evenly cut the one end surface and the other end surface in the thickness direction of the terminal equivalent portion.

  As described above, the portion from which the insulation coating has been peeled can be made into a terminal equivalent portion with high positional accuracy, and is easily crushed when the terminal equivalent portion is crushed, and cracks and cracks occur when the terminal equivalent portion is bent. The manufacturing method of the coil to prevent, the cutting method of the terminal equivalent part of a coil, the manufacturing apparatus of a coil, and the terminal equivalent part cutting device of a coil can be provided.

  A coil manufacturing method, a coil terminal equivalent portion cutting method, a coil manufacturing apparatus, and a coil terminal equivalent portion cutting device according to an embodiment of the present invention will be described with reference to FIGS. First, a description will be given of a coil manufacturing apparatus having a coil terminal equivalent portion cutting apparatus. As shown in FIG. 1, the coil manufacturing apparatus 1 includes a coil forming device 10, a shaving device 20, a crushing device 30, a terminal equivalent portion shape processing portion 40, and a coil end solder plating portion 50. is doing.

  The coil forming apparatus 10 forms a coil 2 as shown in FIG. 3 by winding a rectangular conductive wire 2C covered with an insulating coating 2D in a spiral shape so that its axis is oriented in the thickness direction of the rectangular conductive wire 2C. It is a device to do.

  The coil 2 formed by the coil forming apparatus 10 is constituted by a flat conducting wire 2C whose periphery is covered with an insulating coating 2D. The flat conducting wire 2C is an extension of the conducting wire as shown in FIG. This means a conducting wire whose section cut along a plane perpendicular to the outgoing direction forms a rectangular shape. The coil 2 is a so-called air-core coil having a coil portion 2B and a terminal equivalent portion 2A. The terminal equivalent portion 2A is composed of one end portion and the other end portion of the flat conducting wire 2C, and a portion between the one end portion and the other end portion constitutes a coil portion 2B. The coil portion 2B is configured to be wound by so-called edgewise winding, that is, spirally wound so that the axis is directed in the thickness direction of the flat conductor 2C.

  The insulating coating 2D is made of an epoxy-modified acrylic resin, and the width of the flat conductor 2C including the insulating coating 2D, that is, the length in the left-right direction in FIG. 3C is about 1.85 mm, and the thickness, The length in the vertical direction in 3 (c) is about 0.5 mm. The thickness of the insulating coating 2D is about 0.02 mm.

  The shaving device 20 corresponds to a coil terminal equivalent shaving device. As shown in FIG. 2, the frame 21, the first grinding rollers 22, 22 and the second grinding rollers 23, 23, and a drive motor (not shown) are shown. A coil conveying device. A drive motor (not shown) is accommodated in the frame 21. As shown in FIG. 2, the coil conveying device (not shown) extends in the extending direction of the terminal equivalent portion 2 </ b> A of the coil 2 while maintaining the positional relationship in which the extending direction of the terminal equivalent portion 2 </ b> A of the coil 2 is substantially horizontal. The coil 2 is transported at a transport speed of about 12 mm per second in a direction perpendicular to the direction, that is, in the direction of arrow A in FIG.

  The first grinding rollers 22, 22 and the second grinding rollers 23, 23 are provided in a total of eight pairs of four pairs, each having a rotational axis parallel to each other and facing each other with a predetermined gap therebetween. Yes. In FIG. 2, only two pairs of first grinding rollers 22 and 22 and second grinding rollers 23 and 23 appear in the figure. The first grinding rollers 22, 22 and the second grinding rollers 23, 23 are rotatably supported by the frame 21. The gap between the peripheral surfaces of the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 forming a pair is about 0.4 mm, and the terminal of the coil 2 having a thickness of about 0.5 mm as described above. The corresponding portion 2A is configured to be about 0.4 mm by passing between the peripheral surfaces of the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 that make a pair as described later.

  Two pairs of the first grinding roller and the second grinding roller, which are not shown, are arranged to face the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 shown in FIG. More specifically, the rotation axes of two pairs of the first grinding roller and the second grinding roller not shown are the rotation axes of the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 shown in the figure. One terminal-corresponding portion 2A of the coil 2 is disposed between the peripheral surfaces of the first grinding rollers 22 and 22 and the peripheral surfaces of the second grinding rollers 23 and 23, which are arranged in parallel and illustrated as described later. When sandwiched and scraped, the other terminal equivalent portion 2A is in a positional relationship that can be sandwiched and scraped between the peripheral surface of the first grinding roller and the peripheral surface of the second grinding roller (not shown). . Accordingly, the one terminal equivalent portion 2A and the other terminal equivalent portion 2A of the coil 2 are configured so that the insulating coating 2D can be simultaneously removed by cutting and a part of the flat conductor 2C can be removed by removal.

  The first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 forming a pair are each provided with a diamond grindstone as an abrasive material attached to the peripheral surfaces thereof. The first grinding rollers 22, 22 are in contact with one end surface in the thickness direction of the terminal equivalent portion 2 </ b> A of the flat conductor 2 </ b> C, that is, the upper surface of the flat conductor 2 </ b> C shown in FIG. A part of 2D and the rectangular conductor 2C can be ground. The second grinding rollers 23 and 23 are in contact with the other end surface in the thickness direction of the terminal equivalent portion 2A of the flat conductor 2C, that is, the lower surface of the flat conductor 2C shown in FIG. A portion of the covering 2D and the flat conductor 2C can be ground.

  The two pairs of the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 shown in FIG. 2 are drivingly connected to one driving motor (not shown). As shown by arrow B, each is configured to rotate clockwise. The peripheral speed on the peripheral surfaces of the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 is about 550 mm per minute. Accordingly, the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 have the circumferential surfaces of the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 facing each other in opposite directions. It is comprised so that it may rotate.

  For this reason, as will be described later, the terminal equivalent portion 2A of the coil 2 is passed between the peripheral surfaces of the first grinding rollers 22, 22 and the second grinding rollers 23, 23 that make a pair, so that the insulation coating 2D and the rectangular conductive wire 2C When a part is removed by cutting, the load applied to the terminal equivalent part 2A of the flat conductor 2C from the first grinding rollers 22 and 22 and the terminal equivalent part 2A of the flat conductor 2C from the second grinding rollers 23 and 23 Such a load can be offset. For this reason, it can prevent that the terminal equivalent part 2A of the flat conducting wire 2C is bent, and the one end face and the other end face in the thickness direction of the terminal equivalent part 2A can be evenly cut.

  In addition, since a total of four of the two pairs of the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 are rotationally driven by one drive motor, a motor for rotationally driving each grinding roller is provided. Therefore, the configuration of the shaving device 20 can be simplified as compared with the case of individually driving. Further, even when the motor is deteriorated and the rotational speed is reduced, it is possible to prevent the relative rotational speeds of the four grinding rollers from changing.

  Similarly to the two pairs of the first grinding rollers 22 and 22 and the second grinding rollers 23 and 23 shown in FIG. 2, the two pairs of the first grinding roller and the second grinding roller (not shown) It is drive-coupled to the drive motor, and when the drive motor (not shown) is driven, the peripheral surface of the first grinding roller (not shown) facing the second grinding roller moves downstream in the moving direction of the coil 2. The peripheral surface of the second grinding roller (not shown) facing the first grinding roller rotates so as to move upstream in the moving direction of the coil 2.

  The crushing device 30 is a device that crushes the terminal equivalent portion 2A of the coil 2 to have a predetermined thickness and width. The terminal equivalent portion shape processing portion 40 sets the width in the vertical direction of FIG. 5A to a predetermined value as shown in FIG. 6A so as to match the width of the land pattern of the substrate (not shown). Part. The coil end solder plating portion 50 is a portion that facilitates soldering when the terminal equivalent portion 2A of the coil 2 is subjected to solder plating and mounted on the substrate.

  Next, the manufacturing method of a coil is demonstrated. The method for manufacturing a coil includes a step of forming a coil, a terminal equivalent portion cutting step of the coil, a step of crushing the terminal equivalent portion, a terminal equivalent portion shape processing step, and a coil end solder plating step. In the step of forming the coil, the straight rectangular conductor 2C covered with the insulating coating 2D is spirally wound so that the axis is oriented in the thickness direction of the rectangular conductor 2C. A coil 2 having a terminal equivalent portion 2A and a coil portion 2B as shown in FIG. 3C is formed.

  In the coil terminal equivalent portion cutting step, the cutting device 20 is used to form one end surface and the other end surface in the thickness direction of the flat conductor 2C in the terminal equivalent portion 2A forming one end portion and the other end portion of the coil 2, that is, FIG. The upper end surface and the lower end surface of the terminal equivalent portion 2A shown in FIG. As a result, part of the flat conductor 2C is removed together with the insulation coating 2D, and as shown in FIGS. 4 (a) to 4 (c), it corresponds to the terminal of the coil 2 having a thickness of about 0.5 mm. The portions 2A and 2A are about 0.4 mm, and the flat conductor 2C is exposed at the terminal equivalent portions 2A and 2A. The coil terminal equivalent portion cutting step constitutes a method for cutting the coil terminal equivalent portion.

  Since the terminal equivalent portion cutting step of the coil is performed before the crushing step described later, the one end surface and the other end surface in the thickness direction of the terminal equivalent portion 2A of the coil 2 can be roughened in a satin finish. For this reason, when the terminal equivalent part 2A is pinched by a predetermined member or the like in the crushing step described later, the terminal equivalent part 2A can be prevented from slipping with respect to the pinching member.

  In the crushing step, the crushing device 30 is used to crush the terminal equivalent portion 2A in the thickness direction of the flat conductor 2C as shown in FIGS. 5 (a) to 5 (c), and the thickness is about 0.15 mm. To do. At the same time, the flat conductor 2C is expanded in the width direction. In the terminal equivalent portion shape processing step, the terminal equivalent portion shape processing section 40 processes the shape of the terminal equivalent portion 2A to cut unnecessary portions, and as shown in FIGS. 6 (a) to 6 (c), The corresponding portion 2A has a desired shape, and the width in the vertical direction of FIG. 6A is about 3 mm so as to match the width of the land pattern of the substrate (not shown). In the coil end solder plating process, the terminal equivalent portion 2A of the coil 2 is subjected to solder plating in the coil end solder plating portion 50, and soldering is facilitated when mounting on the substrate.

  Since the coil forming step and the coil terminal equivalent portion cutting step are performed in this order, the insulating coating 2D can be peeled at an accurate position in the terminal equivalent portion 2A. For this reason, it is possible to prevent a short circuit in the coil portion, which occurs when the position where the insulating coating is peeled off and the flat conductor is peeled off in the coil portion. Moreover, since the amount of peeling off the insulation coating 2D can be minimized, it is possible to prevent the terminal-corresponding portion 2A from being scraped off and peeled off more than necessary, and wear of a grindstone used for peeling off the insulation coating 2D. Can be minimized.

  In addition, since the thickness of the flat conducting wire 2C can be reduced by removing a portion of the flat conducting wire 2C, the thin flat conducting wire 2C is crushed in the step of crushing the terminal equivalent portion 2A in the thickness direction of the flat conducting wire 2C. Can be crushed easily. Further, when the flat conductor 2C is crushed, metal hardening occurs, but since the thickness of the flat conductor 2C is thin, the influence of metal hardening can be reduced. For this reason, when using the terminal equivalent part 2A as a user terminal and using the terminal equivalent part 2A, it is possible to prevent cracks and cracks from being generated and to prevent the terminal equivalent part 2A from being cut. Can do.

  The coil manufacturing method, the coil terminal equivalent portion cutting method, the coil manufacturing apparatus, and the coil terminal equivalent portion cutting device according to the present invention are not limited to the above-described embodiments, and are described in the claims. Various modifications and improvements are possible. The dimensions and the like of the coil 2 to be manufactured are not limited to the values in the present embodiment.

  A coil manufacturing method, a coil terminal equivalent portion cutting method, a coil manufacturing apparatus, and a coil terminal equivalent portion cutting apparatus according to the present invention manufacture a coil in which one end or the other end of a conducting wire constituting the coil is a user terminal. It is particularly useful in the field of

The block diagram which shows the manufacturing apparatus of the coil by embodiment of this invention. The principal part perspective view which shows the shaving apparatus by embodiment of this invention. It is a figure which shows the coil of the state before shaving with the shaving apparatus by embodiment of this invention, (a) is a top view, (b) is a front view, (c) is a side view. It is a figure which shows the coil by which the one end surface of the thickness direction and the other end surface were shaved by the shaving apparatus by embodiment of this invention, (a) is a top view, (b) is a front view, (c) is a side view. . It is a figure which shows the coil crushed by the terminal equivalent part crushing apparatus of the coil by embodiment of this invention, (a) is a top view, (b) is a front view, (c) is a side view. It is a figure which shows the coil by which the terminal equivalent part was processed by the predetermined shape after being crushed by the terminal equivalent part crushing apparatus of the coil by embodiment of this invention, (a) is a top view, (b) is a front view. , (C) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coil manufacturing apparatus 2 Coil 2A Terminal equivalent part 2B Coil part 2C Flat conductor 2D Insulation coating 10 Coil forming apparatus 20 Cutting apparatus 21 Frame 22 1st grinding roller 23 2nd grinding roller 30 Crushing apparatus

Claims (5)

A rectangular conductor wire with insulation coating is spirally wound so that the axis is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire constitute a terminal equivalent portion, and the one end portion and the other Forming a coil in which a portion between the ends forms a spiral coil portion;
Each has a first grinding roller and a second grinding roller, each of which is provided with a grinding material, the circumferential surfaces are opposed to each other, and the rotation shafts are parallel to each other. The rotation shaft of the first grinding roller and the terminal equivalent portion The first grinding roller is in contact with one end surface in the thickness direction of the terminal-corresponding portion of the flat wire and can grind the one end surface side in a positional relationship in which the extending direction of the second conductor is parallel. The second grinding roller is in contact with the other end surface of the flat wire in the thickness direction of the terminal equivalent portion in a positional relationship in which the rotation axis of the grinding roller and the extending direction of the terminal equivalent portion are parallel to each other. Removing a part of the rectangular conductor together with the insulating coating by scraping off one end surface and the other end surface of the rectangular conductor in the thickness direction of the terminal equivalent portion by a shaving device capable of grinding the side ;
Crushing the terminal equivalent portion in the thickness direction of the flat wire. A rectangular conductor wire with insulation coating is spirally wound so that the axis is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire constitute a terminal equivalent portion, and the one end portion and the other A first grinding roller and a second grinding roller , each of which has a spiral coil portion between the end portions, each of which is provided with a grinding material on the circumferential surface thereof , the circumferential surfaces are arranged to face each other and the rotation axes are parallel to each other. The first grinding roller has one end face in the thickness direction of the terminal equivalent portion of the flat wire in a positional relationship in which the rotation axis of the first grinding roller and the extending direction of the terminal equivalent portion are parallel to each other. The second grinding roller is capable of grinding the one end face side in a positional relationship in which the rotation axis of the second grinding roller and the extending direction of the terminal-corresponding portion are parallel to each other. the other end face in the thickness direction of the corresponding portion by contact with the grinding can grinding apparatus other end face side, in the terminal-corresponding portion How shaving terminal corresponding portions of the coil and removing portions of the flat conductor wire with insulating coating by scraping off the one end surface and other end surface in the thickness direction of the flat conductor wire to have. A rectangular conductor wire with insulation coating is spirally wound so that the axis is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire constitute a terminal equivalent portion, and the one end portion and the other A coil forming device for forming a coil in which a portion between the ends forms a spiral coil portion;
A shaving device for removing a part of the flat conducting wire together with the insulating coating by shaving off one end surface and the other end surface of the flat conducting wire in the thickness direction of the terminal;
A crushing device for crushing the terminal equivalent part in the thickness direction of the flat wire;
The shaving apparatus includes a first grinding roller and a second grinding roller, each of which is provided with a grinding material on a circumferential surface thereof, the circumferential surfaces of which are opposed to each other, and whose rotational axes are parallel to each other. The rotational shaft of the first grinding roller The first grinding roller is in contact with the one end face in the thickness direction of the terminal equivalent part of the flat wire and can grind the one end face side in a positional relationship in which the extending direction of the terminal equivalent part is parallel to the terminal The second grinding roller is positioned at the other end surface in the thickness direction of the terminal equivalent portion of the flat wire in a positional relationship in which the rotation axis of the second grinding roller and the extending direction of the terminal equivalent portion are parallel to each other. contact with manufacturing equipment of the coil, wherein grinding can der Rukoto the other end face side.   The first grinding roller and the second grinding roller rotate so that peripheral surfaces of the first grinding roller and the second grinding roller facing each other move in opposite directions. Item 4. A coil manufacturing apparatus according to Item 3. A rectangular conductor wire with insulation coating is spirally wound so that the axis is oriented in the thickness direction of the rectangular conductor wire, and one end portion and the other end portion of the conductor wire constitute a terminal equivalent portion, and the one end portion and the other A portion corresponding to the terminal of the coil in which the portion between the ends forms a spiral coil portion,
Each has a first grinding roller and a second grinding roller, each of which is provided with a grinding material, the circumferential surfaces are opposed to each other, and the rotation shafts are parallel to each other. The rotation shaft of the first grinding roller and the terminal equivalent portion The first grinding roller is in contact with the one end face in the thickness direction of the terminal corresponding portion of the flat conductor in a positional relationship in which the extending direction of the flat conductor is parallel to the insulation coating and the flat conductor. A portion of the second grinding roller can be ground, and the second grinding roller has a thickness corresponding to the terminal equivalent portion of the flat wire in a positional relationship in which the rotation axis of the second grinding roller and the extending direction of the terminal equivalent portion are parallel to each other . The insulating coating on the other end surface side and a part of the flat conducting wire can be ground in contact with the other end surface in the vertical direction,
The coil is characterized in that the first grinding roller and the second grinding roller rotate so that peripheral surfaces of the first grinding roller and the second grinding roller facing each other move in opposite directions. Terminal equivalent part shaving device.

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