WO2019167179A1

WO2019167179A1 - Coil production device and coil production method

Info

Publication number: WO2019167179A1
Application number: PCT/JP2018/007547
Authority: WO
Inventors: 佐藤　孝幸; 宏樹斎藤
Original assignee: 日特エンジニアリング株式会社
Priority date: 2018-02-28
Filing date: 2018-02-28
Publication date: 2019-09-06
Also published as: CN110419086A; JPWO2019167179A1; CN110419086B; JP6543425B1

Abstract

This coil production device (100) comprises an adjustment mechanism (50) for adjusting the intervals among a plurality of wire materials (2) headed toward a winding core (25) and a heating device (60) for bonding the plurality of wire materials (2) wound around the winding core (25). The adjustment mechanism (50) comprises a lever (52) rotatable around a rotation center axis that is parallel to the winding core (25) axis, and, provided on the lever (52), a plurality of rollers (53) aligned in one row with a predetermined interval therebetween and having respectively wound therearound the plurality of wire materials (2) headed toward the winding core (25). The lever (52) is constituted so as to be rotatable between a first position wherein the wire materials (2) headed from the roller (53) to the winding core (25) are relatively close to one another and a second position wherein the wire materials (2) headed from the rollers (53) to the winding core (25) are relatively distant from one another.

Description

Coil manufacturing apparatus and coil manufacturing method

The present invention relates to a coil manufacturing apparatus and a coil manufacturing method for winding a wire around a winding core.

JP2000-128433A discloses a coil formed by winding a plurality of parallel wires obtained by joining thin wire conductors in parallel in one plane in the width direction.

The coil of JP2000-128433A is formed by forming multiple parallel lines in which thin conductors covered with an insulating layer are joined in parallel in one plane, and winding the multiple parallel lines in the width direction. In the formation of such a coil, among the multiple parallel wires to be wound, the lengths wound by the thin wires on the inner side in the radial direction and the fine wires on the outer side are different, so that the joining of the thin wires is peeled off. There is a fear.

An object of the present invention is to provide a coil manufacturing apparatus and a coil manufacturing method capable of winding a coil in which a plurality of wires are arranged in the radial direction with high accuracy.

According to an aspect of the present invention, there is provided a coil manufacturing apparatus for manufacturing a coil in which a plurality of wires are wound in a radial direction, and a winding core that is rotated around an axis and wound with a plurality of wires. An adjustment mechanism that adjusts the spacing of the plurality of wire rods toward the core, and an adhesive device that adheres the plurality of wire rods wound around the core, the adjustment mechanism being parallel to the axis of the core A rotating member rotatable around the rotation center axis, and a plurality of locking portions provided on the rotating member in a line at a predetermined interval, and each of which is wound around a plurality of wire rods directed to the core, The rotating member rotates between a first position where the wire members from the locking portion toward the core are relatively close to each other and a second position where the wire members from the locking portion toward the core are relatively separated from each other. Configured to be possible.

According to another aspect of the present invention, there is provided a coil manufacturing method for manufacturing a coil in which a plurality of wire rods are wound side by side in the radial direction, the plurality of wires being provided in a row on a rotating member at a predetermined interval. A step of locking the wire wound around the locking portion of the wire to the core and a step of rotating the core to wind a plurality of wires around the core, and when locking the wire to the core The rotating member is rotated so that the plurality of wires are close to each other, and when the wire is wound around the core, the rotating member is rotated so that the plurality of wires are separated from each other.

FIG. 1 is a plan view of a coil manufactured by a coil manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is an end view of the end lead of the coil, and is a view taken along arrow A in FIG. FIG. 3 is a front view of the coil manufacturing apparatus according to the embodiment of the present invention. FIG. 4 is a side view showing a spindle mechanism, an adjustment mechanism, and a clamp mechanism of the coil manufacturing apparatus according to the embodiment of the present invention. FIG. 5 is a front view of the end surface of the core of the coil manufacturing apparatus according to the embodiment of the present invention as seen from the X-axis direction. FIG. 6 is a front view of the end surface of the shaft of the coil manufacturing apparatus according to the embodiment of the present invention as seen from the X-axis direction. FIG. 7 is a perspective view showing a clamp mechanism of the coil manufacturing apparatus according to the embodiment of the present invention. FIG. 8 is a view for explaining the coil manufacturing method according to the embodiment of the present invention, and shows a process of housing the wire in the holding groove of the winding core. FIG. 9 is a cross-sectional view for explaining the coil manufacturing method according to the embodiment of the present invention, and shows a step of cutting the wire in the holding groove. FIG. 10 is a view for explaining the coil manufacturing method according to the embodiment of the present invention, and shows a step of locking the wire to the winding core. FIG. 11 is a cross-sectional view for explaining the coil manufacturing method according to the embodiment of the present invention and shows a winding process. FIG. 12 is a cross-sectional view for explaining the coil manufacturing method according to the embodiment of the present invention, and shows a winding end cutting step.

Hereinafter, a coil manufacturing apparatus 100 and a coil manufacturing method according to an embodiment of the present invention will be described with reference to the drawings. In each drawing, for convenience of explanation, the scale of each component is appropriately changed, and is not necessarily shown strictly.

First, the coil 1 obtained by the coil manufacturing apparatus 100 and the coil manufacturing method according to the present embodiment will be described.

The coil 1 is used in, for example, a non-contact power supply device, and is a so-called planar coil obtained by winding a plurality of wires 2 in a spiral on the same plane as shown in FIGS. 1 and 2. is there. The winding start (start lead 1a) of the coil 1 is located on the inner periphery, and the winding end (end lead 1b) is located on the outer periphery.

The coil 1 is formed by winding a plurality of wire rods 2 so as to be aligned in the radial direction of the coil 1. The plurality of wires 2 are self-bonding wires having an insulating coating 2a that is fused by heat. In the present embodiment, the coil 1 is formed by winding eight wires 2 (see FIG. 2).

Next, the coil manufacturing apparatus 100 will be described mainly with reference to FIGS. Hereinafter, for convenience of explanation, a specific configuration of the coil manufacturing apparatus 100 will be described with three orthogonal axes X, Y, and Z set. The Z axis is an axis along the vertical direction, and two orthogonal axes forming a horizontal plane perpendicular to the Z axis are the X axis and the Y axis. The X axis is a direction along the rotation center axis of the core 25 described later.

As shown in FIGS. 3 and 4, the coil manufacturing apparatus 100 includes a winding mechanism 10 that winds a plurality of wires 2 guided from a wire source (not shown) around a winding core 25 that rotates about an axis, and a wire source. An adjustment mechanism 50 that adjusts the distance between the plurality of wires 2 from the core 25 toward the core 25, a heating device 60 as an adhesive device for bonding the plurality of wires 2 wound around the core 25, and the core 25 A clamp mechanism 70 that grips the wire 2 wound around, a winding mechanism 10, an adjustment mechanism 50, a heating device 60, and a controller 80 that controls the operation of the clamp mechanism 70. The winding mechanism 10, the adjusting mechanism 50, the heating device 60, and the clamp mechanism 70 are provided on the base 101, respectively.

As shown mainly in FIG. 3, the winding mechanism 10 includes a spindle mechanism 20 that rotates the winding core 25 to wind the wire 2 around the winding core 25, and the wire 2 that is wound around the winding core 25. It has the support mechanism 30 for supporting the winding start, and the 1st cutting mechanism 40 which cut | disconnects the winding start of the wire 2 wound by the winding core 25. FIG.

The spindle mechanism 20 includes a drive motor 21 that is an electric motor, a spindle 22 that is rotationally driven by the drive motor 21, and a cylindrical core 25 that is provided coaxially at the tip of the spindle 22.

The spindle 22 is rotatably supported by the base 101, and is rotated about the central axis by transmitting the rotation of the drive motor 21 via a belt or the like.

The winding core 25 rotates with the spindle 22. As shown in FIG. 5, a holding groove 26 for holding the winding start of the wire 2 is formed on the end surface of the winding core 25 so as to extend in the radial direction. Further, the winding core 25 has a relief recess for avoiding interference between a recess 27 into which a protrusion 32 provided on a shaft 31 of a support mechanism 30 described later can enter and a cutter 41 of a first cutting mechanism 40 described later. 28 are formed. The recess 27 and the escape recess 28 each have a rectangular cross section perpendicular to the X-axis direction, open to the end face of the core 25 and communicate with the holding groove 26.

As shown in FIG. 3, the support mechanism 30 is provided coaxially with the spindle 22 of the spindle mechanism 20 and holds the wire 2 between the core 25 and the shaft 31 is advanced and retracted in the X-axis direction. A shaft moving mechanism 35 that moves relative to the spindle 22.

The shaft 31 is configured to approach and separate from the spindle 22 by the shaft moving mechanism 35. The shaft moving mechanism 35 includes a drive motor 35a that is an electric motor, a ball screw 35b that is rotationally driven by the drive motor 35a, and a follower 35c that is connected to the shaft 31 and moves linearly by the rotation of the ball screw 35b. This is a so-called linear motion mechanism. Since the linear motion mechanism using the drive motor 35a and the ball screw 35b has a known configuration, detailed description thereof is omitted.

The shaft 31 is connected to the follower 35c of the shaft moving mechanism 35 through the connecting member 30a. The shaft 31 is rotatably supported by the connecting member 30a. Therefore, the shaft 31 can be rotated together with the core 25 while holding the wire 2 together with the core 25.

As shown in FIGS. 3 and 6, the tip of the shaft 31 is provided with a protrusion 32 that sandwiches the winding start of the wire 2 accommodated in the holding groove 26 together with the core 25. The protrusion 32 protrudes from the end surface of the shaft 31 and is provided to face the winding core 25. The protrusion 32 has a rectangular cross section whose center coincides with the central axis of the shaft 31. When the shaft 32 is driven by the shaft moving mechanism 35 so that the shaft 31 is close to the spindle 22, the protrusion 32 enters the recess 27 of the core 25, and clamps the wire 2 in the holding groove 26 together with the core 25. (See FIG. 9). As a result, the wire 2 is held by the winding core 25 and the shaft 31.

The first cutting mechanism 40 is provided on the opposite side of the core 25 with the shaft 31 interposed therebetween, and is attached to a connecting member 30a that connects the shaft 31 and the follower 35c. Therefore, the first cutting mechanism 40 moves together with the support mechanism 30. As shown in FIG. 3, the first cutting mechanism 40 cuts the wire 2 accommodated in the holding groove 26 of the core 25 through an insertion hole 31 a (see FIG. 6) extending in the X-axis direction and formed in the shaft 31. And a cutter moving mechanism 42 for moving the cutter 41 back and forth in the X-axis direction.

Since the cutter moving mechanism 42 can adopt a known configuration, a detailed description thereof is omitted. For example, an air cylinder 43 that moves the cutter 41 toward the core 25 in the X-axis direction and the cutter 41 that is the core 25. And a spring 44 retracted from the shaft 31.

The cutter 41 of the first cutting mechanism 40 is moved in the X-axis direction by the cutter moving mechanism 42 and protrudes from the end surface of the shaft 31 through the insertion hole 31a of the shaft 31, thereby cutting the wire 2 in the holding groove 26. The first cutting mechanism 40 is provided on the opposite side of the support mechanism 30 with respect to the spindle mechanism 20 (on the right side of the spindle mechanism 20 in FIG. 3) so that the cutter 41 passes through the spindle 22 and the core 25. The wire 2 may be cut.

The adjustment mechanism 50 is provided on the lever 52 in a line at a predetermined interval, and a base member 51, a lever 52 as a rotating member that can rotate around a rotation center axis parallel to the axis of the core 25, Rollers 53 as a plurality of locking portions around which a plurality of wires 2 guided from a wire source are respectively wound, an adjustment motor 54 that rotates a lever 52, and a base member 51 are moved in the X-axis direction and the Y-axis direction, respectively. A first base moving mechanism 55 and a second base moving mechanism 56.

The adjustment motor 54 is attached to the base member 51 so that the motor shaft 54a is parallel to the X axis. The adjustment motor 54 is an electric motor, and is a servo motor or a pulse motor that rotates the motor shaft 54a in accordance with electric power supplied from a driver (not shown). For this reason, the lever 52 can be accurately rotated to a desired angle.

As shown in FIG. 3, the lever 52 is connected to the motor shaft 54a of the adjustment motor 54, and rotates around the rotation center axis by the rotation of the motor shaft 54a. The center axis of the motor shaft 54 a of the adjustment motor 54 corresponds to the rotation center axis of the lever 52.

As shown in FIG. 4, a plurality of rollers 53 (eight in this embodiment) are provided on the lever 52 in accordance with the number of wires 2 to be wound. The plurality of rollers 53 are arranged in a straight line and are provided on the lever 52 so as to be rotatable. Among the plurality of rollers 53 arranged in a row, the roller 53 at one end (the leftmost roller in FIG. 4) is provided coaxially with the rotation center axis of the lever 52 (the center axis of the motor shaft 54a of the adjustment motor 54). The intervals between the plurality of rollers 53 are configured to increase as the distance from the rotation center axis of the lever 52 increases.

The distance between the wires 2 wound around the plurality of rollers 53 is adjusted by rotating the lever 52. Assuming that the angle of the lever 52 with respect to the Z axis (in other words, the angle of the alignment direction of the roller 53 with respect to the Z axis) is θ, as shown in FIG. Are almost zero and are in the closest state to each other. As the lever 52 rotates clockwise in FIG. 8 and the angle θ increases, the spacing between the wire rods 2 increases, and as shown in FIG. 10, the angle θ is 90 ° at the maximum (the wire rod 2 is the most separated). State).

As shown in FIG. 3, the first base moving mechanism 55 includes a drive motor 55a that is an electric motor, a ball screw 55b, and a follower 55c. The first base moving mechanism 55 is a linear motion mechanism that moves the follower 55c in the X-axis direction by rotating the ball screw 55b by the drive motor 55a. The second base moving mechanism 56 is attached to the follower 55 c of the first base moving mechanism 55. The second base moving mechanism 56 includes a drive motor 56a that is an electric motor, a ball screw 56b, and a follower 56c. The second base moving mechanism 56 is a linear motion mechanism that moves the follower 56c in the Y-axis direction by rotating the ball screw 56b by the drive motor 56a. The base member 51 is attached to the follower 56 c of the second base moving mechanism 56. Since the first base moving mechanism 55 and the second base moving mechanism 56 can also employ a known configuration, detailed description thereof is omitted.

The heating device 60 includes a pair of

hot air nozzles

60a and 60b that blow hot air and a nozzle moving mechanism that independently moves the pair of hot air nozzles 50a and 60b in the X, Y, and Z axis directions. One hot air nozzle 60 a mainly injects hot air toward the wire 2 from the roller 53 of the adjustment mechanism 50 toward the core 25. The other hot air nozzle 60 b mainly injects hot air toward the wire 2 wound around the core 25. By injecting hot air onto the wire 2, the insulating coating 2 a is welded, and the plurality of wires 2 are bonded to each other. Since the nozzle moving mechanism can adopt a known configuration, illustration and detailed description thereof are omitted. For example, similar to the moving mechanism described above, there are 3 linear motion mechanisms configured by an electric motor, a ball screw, a follower, and the like. It is configured by combining in the axial direction. By moving the pair of

hot air nozzles

60a and 60b by the nozzle moving mechanism, it is possible to change the position at which the hot air is ejected.

As shown in FIG. 7, the clamp mechanism 70 includes a clamp base 71, a clamp portion 72 provided on the clamp base 71 for gripping the wire 2, and a roller 53 of the adjustment mechanism 50 provided on the clamp base 71 from the winding core 25 to the core 25. It has a guide part 73 that guides the wire 2 that is headed, and a guide moving mechanism that moves the clamp base 71 in the X, Y, and Z axis directions. Since the guide moving mechanism can adopt a known configuration, illustration and detailed description thereof are omitted. For example, as with the moving mechanism described above, for example, 3 linear motion mechanisms configured by an electric motor, a ball screw, a follower, etc. It is configured by combining in the axial direction.

The clamp part 72 is an air chuck mechanism that opens and closes the pair of

claw parts

72a and 72b to grip the plurality of wires 2 from the X-axis direction. Since the clamp part 72 can employ a known air chuck mechanism, detailed description thereof is omitted.

In the guide portion 73, a slit 73a extending in the Y-axis direction is formed with an interval (width in the X-axis direction) slightly larger than the diameter of the wire 2. Since the wire 2 from the roller 53 toward the core 25 is accommodated in the slit 73a of the guide portion 73, blurring in the X-axis direction during the winding is restricted. The guide part 73 is provided above the clamp part 72 in the vertical direction (Z-axis direction).

Below the clamp part 72 in the vertical direction (Z-axis direction), a second cutting mechanism 75 for cutting the lower part of the wire 2 gripped by the clamp part 72 is provided. Since the second cutting mechanism 75 can employ a known configuration, a detailed description thereof is omitted. For example, as shown in FIG. 7, the pair of

cutting blades

75a and 75b are driven to open and close to the wire 2 Cut by pinching. The second cutting mechanism 75 is configured to be able to advance and retreat in the Y-axis direction by a cutter moving mechanism (not shown).

The controller 80 is composed of a microcomputer including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and an I / O interface (input / output interface). The RAM stores data in the processing of the CPU, the ROM stores a control program of the CPU in advance, and the I / O interface is used for input / output of information with the connected device. The controller 80 may be composed of a plurality of microcomputers. The controller 80 is programmed so that at least the processing necessary for executing the control according to the present embodiment and the modification can be executed. The controller 80 may be configured as a single device, or may be divided into a plurality of devices, and may be configured so that each control in the present embodiment is distributedly processed by the plurality of devices.

The controller 80 controls the operation of the electric motor and actuator of the coil manufacturing apparatus 100 so that the coil manufacturing method described below can be executed.

Next, the coil manufacturing method according to this embodiment will be described with reference to FIGS. 8, 10, 11, and 12, a single wire 2 is schematically shown by a single line, and a state in which a plurality of wires 2 are bundled is schematically shown by a band-like figure having a width. The reference numerals of the plurality of wires 2 and the rollers 53 are omitted as appropriate.

[Wire rod locking process]
In this step, the wire 2 at the beginning of winding is locked to the core 25. Specifically, as shown in FIG. 8, first, the end portion of the wire 2 that is hung on the roller 53 of the adjustment mechanism 50 through a tension device (not shown) that adjusts the tension of the wire 2 from the wire source is clamped. It is clamped by 70 clamping parts 72. The wire 2 between the roller 53 and the clamp part 72 is inserted into a slit 73a (see FIG. 7) in the guide part 73 of the clamp mechanism 70. At this time, the positions of the clamp portion 72 and the roller 53 in the X-axis direction are aligned so that the wire 2 is not inclined with respect to the YZ plane (plane parallel to the paper surface) defined by the Y-axis and the Z-axis.

Also, the lever 52 is rotated so that the angle θ is substantially zero, and the plurality of rollers 53 are positioned so as to be aligned in the vertical direction. Thereby, as mentioned above, the space | interval between the wire 2 becomes substantially zero, and the adjacent wire 2 adjoins (for example, the extent which contacts slightly). In other words, a plurality of wire rods 2 are arranged in one direction (Y-axis direction) and bundled into one. As described above, the angle position of the lever 52 at which the angle θ of the lever 52 is substantially zero and the adjacent wire 2 approaches each other is defined as a “first position”.

Next, the shaft 31 of the support mechanism 30 is separated from the core 25, and the core 25 is positioned so that the holding groove 26 extends in the Z-axis direction. In this state, the adjusting mechanism 50 and the clamp mechanism 70 are moved, and the wire 2 between the clamp portion 72 and the roller 53 is inserted into the holding groove 26 of the core 25 (state shown in FIG. 8). Thereafter, the shaft 31 of the support mechanism 30 is moved in the X-axis direction toward the core 25, and the wire 2 in the holding groove 26 is sandwiched between the core 25 and the shaft 31.

Next, hot air is injected from the

hot air nozzles

60a and 60b to the wire 2 in the holding groove 26 sandwiched between the winding core 25 and the shaft 31, and is heated for a predetermined time. Thereby, the wire 2 in the holding groove 26 is bonded (welded) to each other.

Next, as shown in FIG. 9, the cutter 41 of the first cutting mechanism 40 is protruded from the end face of the core 25, and the wire 2 between the core 25 and the clamp portion 72 is cut.

Next, as shown in FIG. 10, the lever 52 is rotated from the first position so that the angle θ is 90 °. Thereby, the wire 2 between the winding core 25 and the roller 53 of the adjusting mechanism 50 is separated from each other (hereinafter, the position of the lever 52 is referred to as a “second position”).

Also, the lever 52 is rotated to the second position, and the spindle 22 is rotated by a predetermined angle. Thereby, the wire 2 in the holding groove 26 is locked to the boundary portion between the outer periphery of the winding core 25 and the holding groove 26.

In this way, the start lead 1a (see FIG. 1) of the coil 1 in which the plurality of wires 2 are welded to each other is formed.

[Winding process]
Next, the wire 22 is wound around the winding core 25 by rotating the spindle 22 at a predetermined rotational speed at a predetermined rotational speed. In the present embodiment, the winding core 25 rotates clockwise as indicated by an arrow in FIG. In the process of winding the wire 2 around the winding core 25, as shown in FIG. 11, the lever 52 is maintained at the second position, and the winding core 25 is kept at a predetermined interval from each other. Is wound on. The adjustment mechanism 50 and the clamp mechanism 70 (guide portion 73) move in the Y-axis direction as the diameter of the coil 1 to be wound increases. Thereby, the wire 2 can be wound in the radial direction with a constant tension.

During the winding process, hot air is jetted from the

hot air nozzles

60 a and 60 b toward the wire 2 between the roller 53 and the core 25 and the wire 2 wound around the core 25. Thus, the wire 2 is bonded (welded) to the adjacent wire 2 in a state where the insulating coating 2 a is fused by heat and wound around the core 25. By heating the wire 2 between the roller 53 and the core 25, the plurality of wires 2 wound around the core 25 and in contact with each other can be quickly bonded. Of the plurality of wires 2 guided to the core 25, the wire 2 positioned on the radially inner side is bonded to the wire 2 already wound around the core 25.

[End-of-wind cutting process]
When the wire 2 is wound around the core 25 a predetermined number of times, the rotation of the spindle 22 is stopped. Thereafter, the lever 52 is rotated again from the second position to the first position, and the adjacent wire 2 is brought close to each other. At this time, the guide portion 73 moves in the Y-axis direction so as to be separated from the wire 2. In this state, hot air is jetted from the

hot air nozzles

60a and 60b to the wire 2 between the roller 53 and the core 25 and heated to bond the wire 2 at the end of winding (see FIG. 12).

Next, as shown in FIG. 12, the clamp mechanism 70 is moved in the Y-axis and Z-axis directions, and the wire 2 (winding end wire) between the core 25 and the roller 53 is gripped by the clamp portion 72. . Then, the wire 2 between the clamp mechanism 70 and the core 25 is cut by the second cutting mechanism 75. Thereby, the end lead 1b (see FIG. 1) of the coil 1 is formed.

The coil 1 shown in FIG. 1 is formed by the above process. When the winding end cutting step is completed, the shaft 31 is moved in the X-axis direction so as to retract from the core 25, and the formed coil 1 is removed from the core 25. Thereafter, the wire rod locking process is performed again, and the next coil 1 is manufactured.

Here, when a plurality of wires 2 are preliminarily bonded to the winding core 25 and wound, there is a difference in the length of winding between the radially inner wire 2 and the outer wire 2, There is a possibility that the wire 2 cannot be wound in a well-aligned manner, for example, because the adhesion of the wire 2 is peeled off.

In contrast, in the present embodiment, at the start and end of winding, the lever 52 is in the first position, the wire 2 is brought close to each other, and bonded together. In the winding step, the wire 52 is guided to the winding core 25 with the lever 52 in the second position and spaced apart from each other, and then the plurality of wires 2 are bonded in a state of being wound around the winding core 25. . As described above, since the plurality of wires 2 are wound around the core 25 independently (without bonding), the situation where the adhesion is peeled off due to the difference in the length of winding does not occur, and the wires 2 are accurate. Can wind well.

Also, the plurality of rollers 53 are arranged in a straight line, and are provided on the lever 52 so that the interval increases as the distance from the rotation center axis of the lever 52 increases. Thereby, the space | interval (angle space | interval (alpha) shown in FIG. 11) of the wire 2 which goes to the core 25 from the roller 53 can be made uniform. Therefore, it can prevent more reliably that the wire 2 contacts and is welded mutually on the way to the core 25 from the roller 53. FIG.

Also, the wire 2 is guided to the core 25 at equal angular intervals, whereby each of the plurality of wires 2 is uniformly bonded to the adjacent wire 2. As described above, since the bonding state (adhesion condition) with the adjacent wire 2 can be made uniform with all of the plurality of wires 2, the dimensional accuracy such as the thickness of the coil 1 (dimension in the direction perpendicular to the paper surface in FIG. 1) and the appearance This improves the finishing accuracy.

Next, a modification of this embodiment will be described. The following modifications are also within the scope of the present invention, and it is possible to combine the following modifications and the configurations of the above embodiments, or to combine the following modifications. Similarly, the modifications described in the description of the above embodiment can be arbitrarily combined with other modifications.

In the above embodiment, at the first position of the lever 52, the angle θ is substantially zero and the wires 2 are close to each other. In the second position, the angle θ is 90 °, and the plurality of wire rods 2 are separated from each other. On the other hand, the angle θ of the lever 52 at the first position may not be substantially zero as long as the adjacent wire 2 can be welded. Further, the angle θ of the lever 52 in the second position may not be 90 ° as long as the wire 2 guided to the core 25 is not in contact with and separated from the core. Thus, in the first position, the levers 52 are relatively close to each other in the wire 2 from the roller 53 toward the core 25, and in the second position, the wire 2 from the roller 53 toward the core 25 is relatively close to each other. As long as it is configured to be separated from each other.

In the above embodiment, the lever 52 is maintained in the second position in the winding process of winding the wire 2 around the core 25. On the other hand, during the winding process, for example, the angle θ of the lever 52 may be changed in accordance with an increase in the diameter of the coil 1 that increases with the winding.

Further, in the above embodiment, the rollers 53 are provided in a line on a straight line, and are provided on the lever 52 so that the distance between the rollers 53 increases as the distance from the rotation center axis of the lever 52 increases. Thereby, the angle interval α of the wire 2 toward the core 25 can be made uniform. In contrast, the roller 53 can weld the wire rods 2 relatively close to each other when the lever 52 is in the first position, and relatively separates the wire rods 2 when they are in the second position. As long as welding can be prevented, any configuration can be adopted. For example, the interval between the rollers 53 can be arbitrarily set, and the rollers 53 may be provided on the lever 52 at equal intervals.

Further, for example, the roller 53 may be provided on the lever 52 in a curved line (involute curve or the like). According to this, in addition to the interval between the rollers 53, the angle interval α of the wire 2 can be adjusted by the shape of the curve, and the degree of freedom in design is improved.

In the above-described embodiment, the locking portion is the roller 53 that is rotatably provided on the lever 52, but is not limited thereto, and may be, for example, a pin or nozzle provided on the lever 52.

Moreover, in the said embodiment, although the coil 1 is formed by winding the eight wire rods 2, the number of the wire rods 2 is not restricted to this, 2-7 or 9 or more may be sufficient. .

According to the above embodiment, the following effects are obtained.

In this embodiment, since the space | interval between the wire rods 2 can be adjusted with the adjustment mechanism 50, when winding the wire rod 2, the wire rods 2 are brought close to each other and bonded to each other, and the wire rod 2 is wound around the core 25 The wire 2 can be wound with the wires 2 being separated from each other. Thus, while the wire 2 is bonded at the winding start portion, the winding around the core 25 is separated from each other, so that the plurality of wires 2 are wound around the core 25 in a neatly aligned state without being twisted. Is done. Further, by bonding the plurality of wires 2 in a state of being wound around the core 25, there is no situation in which the bonding is peeled off due to the difference in the length of the wire wound on the inner and outer wires 2. Therefore, it is possible to accurately manufacture the coil 1 in which the plurality of wires 2 are wound side by side in the radial direction.

Further, in the present embodiment, the plurality of rollers 53 are provided on the lever 52 so that the interval increases as the distance from the rotation axis of the lever 52 increases. Thereby, the space | interval of the wire 2 which goes to the core 25 from the roller 53 can be made uniform, and it can prevent more reliably that the wire 2 contacts and is mutually welded.

Also, the wire 2 is guided to the core 25 at equal angular intervals, whereby each of the plurality of wires 2 is uniformly bonded to the adjacent wire 2. Thereby, the dimensional accuracy of the coil 1 and the finishing accuracy in appearance are improved.

Hereinafter, the configuration, operation, and effect of the embodiment of the present invention will be described together.

A coil manufacturing apparatus 100 that manufactures a coil 1 in which a plurality of wire rods 2 are wound side by side in a radial direction is rotated around an axis to be wound around the core 25 and the core 25. The adjustment mechanism 50 which adjusts the space | interval of the some wire 2 and the adhesion | attachment apparatus (heating device 60) for adhere | attaching the some wire 2 wound around the core 25 are provided, and the adjustment mechanism 50 is a core. A rotating member (lever 52) rotatable around a rotation center axis parallel to the axis of 25, and a plurality of wires provided on the rotating member (lever 52) in a line at a predetermined interval and directed toward the core 25 The rotating member (lever 52) includes a first position where the wires 2 from the roller 53 toward the core 25 are relatively close to each other, and a roller 53 to the core. Wires 2 toward 25 are relatively separated from each other And a second position, rotatably comprised between.

In this configuration, since the distance between the wire rods 2 can be adjusted by the adjusting mechanism 50, the wire rods 2 can be separated from each other during the winding. Thereby, the several wire 2 is wound around the core 25 in the state arranged neatly without twisting. Further, by bonding the plurality of wires 2 in a state of being wound around the core 25, there is no possibility that the bonding is peeled off due to the difference in the length of the winding generated in the inner and outer wires 2. Therefore, the coil 1 in which a plurality of wires 2 are arranged in the radial direction can be wound with high accuracy.

In the coil manufacturing apparatus 100, the adjustment mechanism 50 includes an adjustment motor 54 that rotates the rotating member (lever 52), and the adjustment motor 54 is a pulse motor or a servo motor.

In this configuration, the lever 52 can be accurately rotated to a desired angle.

Further, in the coil manufacturing apparatus 100, the locking portion is a roller 53 that is rotatably provided on the lever 52.

In the coil manufacturing apparatus 100, the bonding apparatus is a heating apparatus 60 that heats the plurality of wires 2 between the adjustment mechanism 50 and the core 25.

A coil manufacturing method for manufacturing a coil 1 in which a plurality of wires 2 are bonded in a radial direction is wound around a plurality of rollers 53 provided in a row on a rotating member (lever 52) at a predetermined interval. A step of locking the wire 2 to the core 25, and a step of rotating the core 25 to wind the plurality of wires 2 guided from the rollers 53 around the core 25. When the wire 2 is locked, the rotating member (lever 52) is rotated so that the plurality of wires 2 are close to each other, and when the wire 2 is wound around the core 25, the plurality of wires 2 are mutually connected. The rotating member (lever 52) is rotated so as to be separated.

In this configuration, when starting the winding, the wires 2 are brought close to each other and the wire 2 is locked to the core 25, and the wires 2 are separated from each other during the winding. Thereby, the several wire 2 is wound around the core 25 in the state arranged neatly without twisting. In addition, the plurality of wires 2 that are bonded in advance are not wound around the core 25, and the plurality of wires 2 are wound around the core 25 independently (without bonding). There is no fear of the occurrence of a problem such as the separation of the joint due to the difference in the length of the windings generated in step (b). Therefore, the coil 1 in which a plurality of wires 2 are arranged in the radial direction can be wound with high accuracy.

In the coil manufacturing method of the present embodiment, in the step of winding the plurality of wires 2, the plurality of wires 2 between the roller 53 and the core 25 are heated to weld the plurality of wires 2.

The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

Claims

A coil manufacturing apparatus for manufacturing a coil in which a plurality of wires are wound in a radial direction,
A core around which the plurality of wires are wound by rotating around an axis;
An adjustment mechanism that adjusts the intervals of the plurality of wire members toward the winding core;
An adhesive device for adhering the plurality of wires wound around the winding core,
The adjustment mechanism is
A rotating member rotatable around a rotation center axis parallel to the axis of the winding core;
A plurality of locking portions provided on the rotating member in a line at a predetermined interval, and each of the plurality of wire members facing the winding core is wound around,
The rotating member is
A first position where the wire rods from the locking portion toward the core are relatively close to each other;
The coil manufacturing apparatus comprised rotatably between the 2nd position where the said wire rods which go to the said core from the said latching | locking part are relatively spaced apart.
The coil manufacturing apparatus according to claim 1,
The adjustment mechanism has an adjustment motor that rotates the rotating member;
The adjustment motor is a coil manufacturing apparatus which is a pulse motor or a servo motor.
The coil manufacturing apparatus according to claim 1 or 2,
The said latching | locking part is a coil manufacturing apparatus which is a roller provided in the said rotation member rotatably.
The coil manufacturing apparatus according to any one of claims 1 to 3,
The said manufacturing apparatus is a coil manufacturing apparatus which is a heating apparatus which heats these wire rods between the said adjustment mechanism and the said core.
A coil manufacturing method for manufacturing a coil in which a plurality of wires are bonded side by side in a radial direction,
A step of locking the plurality of wire rods respectively hung around a plurality of locking portions provided in a row on the rotating member at a predetermined interval, and a core;
Rotating the winding core and winding the plurality of wires guided from the locking portion around the winding core, and
When locking the wire to the winding core, rotate the rotating member so that the plurality of wires are close to each other,
A coil manufacturing method for rotating the rotating member so that the plurality of wires are separated from each other when the wire is wound around the winding core.
The coil manufacturing method according to claim 5,
A coil manufacturing method in which, in the step of winding the plurality of wires, the plurality of wires are heated between the locking portion and the core to weld the plurality of wires.