JPWO2019167179A1 - Coil manufacturing apparatus and coil manufacturing method - Google Patents

Abstract

The coil manufacturing device (100) includes an adjusting mechanism (50) that adjusts the intervals between the plurality of wire rods (2) toward the winding core (25), and the plurality of wire rods (2) wound around the winding core (25). And a heating device (60) for adhering to each other, and the adjusting mechanism (50) has a lever (52) rotatable about a rotation center axis parallel to the axis of the winding core (25) and a predetermined interval. A plurality of rollers (53) which are placed on the lever (52) side by side in a row and around which a plurality of wire rods (2) toward the winding core (25) are respectively wound; and the lever (52) is a roller. The first position where the wire rods (2) extending from (53) toward the winding core (25) are relatively close to each other, and the wire rod (2) extending from the roller (53) toward the winding core (25) are relatively separated from each other. It is configured to be rotatable between a second position and.

Description

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

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

  The coil of JP2000-128433A is formed by forming a multi-parallel wire in which a thin conductor covered with an insulating layer is joined in parallel in one plane, and winding the multi-parallel wire in the width direction. In the formation of such a coil, among the multiple parallel wires to be wound, the wire wound length is different between the thin wire on the radially inner side and the thin wire on the outer side, so that the bonding between the thin wires is separated. There is a risk.

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

  According to an aspect of the present invention, a coil manufacturing apparatus that manufactures a coil in which a plurality of wires are wound in a line in a radial direction, and a core in which the plurality of wires are wound around the shaft while rotating around an axis. An adjusting mechanism for adjusting the interval between the plurality of wires going to the core, and a bonding device for bonding the plurality of wires wound on the core, the adjusting mechanism is parallel to the axis of the core. A rotating member rotatable about the rotation center axis, and a plurality of locking portions provided on the rotating member in a line at a predetermined interval, and a plurality of wire rods respectively wound around the core, The rotating member rotates between a first position where the wires going from the locking portion toward the core are relatively close to each other and a second position where the wires going from the locking portion toward the core are relatively separated from each other. It is 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 wires are wound in a row in a radial direction, the plurality of wires being provided in a row on a rotating member at predetermined intervals. And a step of rotating the core and winding a plurality of wires around the core, and locking the wire to the core. Then, the rotating member is rotated so that the plurality of wires come close to each other, and when the wire is wound around the core, the rotating member is rotated such that the plurality of wires are separated from each other.

FIG. 1 is a plan view of a coil manufactured by the coil manufacturing apparatus according to the embodiment of the present invention. FIG. 2 is an end view of the end lead of the coil, and is a view taken in the direction of 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 face of the core of the coil manufacturing apparatus according to the embodiment of the present invention as viewed 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 viewed from the X-axis direction. FIG. 7 is a perspective view illustrating a clamp mechanism of the coil manufacturing apparatus according to the embodiment of the present invention. Drawing 8 is a figure for explaining the coil manufacturing method concerning an embodiment of the present invention, and shows a process of accommodating a wire in a holding slot of a 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 a wire in the holding groove. Drawing 10 is a figure for explaining the coil manufacturing method concerning an embodiment of the present invention, and shows a process of locking a wire to a 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 step. 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 of the drawings, the scale of each component is appropriately changed for convenience of explanation, and is not necessarily strictly illustrated.

  First, a 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, for example, in a non-contact power supply device, and is a so-called planar coil obtained by spirally winding a plurality of wires 2 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 wires 2 so as to be arranged in the radial direction of the coil 1. The plurality of wires 2 are self-fusing wires having an insulating coating 2a 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 the sake of convenience of description, a specific configuration of the coil manufacturing apparatus 100 will be described by setting three orthogonal axes of X, Y, and Z. 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 a 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 core 25 that rotates around an axis, and a wire source. An adjusting mechanism 50 for adjusting the interval between the plurality of wires 2 traveling from the winding core 25 to the winding core 25, a heating device 60 as a bonding device for bonding the plurality of wires 2 wound around the winding core 25, and a winding core 25. And a controller 80 for controlling operations of the winding mechanism 10, the adjusting mechanism 50, the heating device 60, and 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 illustrated in FIG. 3, the winding mechanism 10 mainly includes a spindle mechanism 20 that rotates the core 25 to wind the wire 2 around the core 25, and a wire mechanism 2 that is wound around the core 25. It has a support mechanism 30 for supporting the start of winding and a first cutting mechanism 40 for cutting the start of winding of the wire 2 wound around the core 25.

  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 around the central axis by transmitting the rotation of the drive motor 21 via a belt or the like.

  The core 25 rotates with the spindle 22. As shown in FIG. 5, a holding groove 26 for holding the start of winding of the wire 2 is formed on the end face of the core 25 so as to extend in the radial direction. The core 25 has a recess 27 into which a projection 32 provided on a shaft 31 of a support mechanism 30 described later can enter, and an escape recess for avoiding interference with a cutter 41 of a first cutting mechanism 40 described later. 28 are formed. Each of the recess 27 and the escape recess 28 has a rectangular cross section perpendicular to the X-axis direction, and opens to the end face of the core 25 to 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, and moves the shaft 31 forward and backward in the X-axis direction. And a shaft moving mechanism 35 that moves relatively to the spindle 22.

  The shaft 31 is configured to be moved toward and away 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 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, a detailed description is omitted.

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

  As shown in FIGS. 3 and 6, a protrusion 32 is provided at the tip of the shaft 31 for holding 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 core 25. The protrusion 32 has a rectangular cross section whose center coincides with the center axis of the shaft 31. When the shaft 31 is driven by the shaft moving mechanism 35 so that the shaft 31 approaches the spindle 22, the protrusion 32 enters the recess 27 of the core 25, and holds the wire 2 in the holding groove 26 together with the core 25. (See FIG. 9). Thereby, the wire 2 is held by the 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 31a (see FIG. 6) formed in the shaft 31 and extending in the X-axis direction. And a cutter moving mechanism 42 for moving the cutter 41 forward and backward in the X-axis direction.

  Since the cutter moving mechanism 42 can adopt a known configuration, detailed description is omitted. For example, an air cylinder 43 that moves the cutter 41 toward the core 25 in the X-axis direction, and a cutter 41 that moves the cutter 41 to 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 cuts the wire 2 in the holding groove 26 by projecting from the end face of the shaft 31 through the insertion hole 31 a of the shaft 31. 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), and the cutter 41 passes through the spindle 22 and the core 25. Alternatively, the wire rod 2 may be cut.

  The adjustment mechanism 50 is provided on the lever 52 as a rotating member rotatable about a rotation center axis parallel to the axis of the core 25, a lever 52 as a rotating member, and arranged at a predetermined interval in a line. Rollers 53 serving as a plurality of locking portions around which the plurality of wires 2 guided from the wire source are respectively wound, an adjustment motor 54 for rotating the lever 52, and the 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 such that the motor shaft 54a is parallel to the X axis. The adjustment motor 54 is an electric motor, and is a servomotor or a pulse motor in which a motor shaft 54a rotates according to electric power supplied from a driver (not shown). Therefore, the lever 52 can be accurately rotated to a desired angle.

  As shown in FIG. 3, the lever 52 is connected to a motor shaft 54a of the adjustment motor 54, and rotates around a rotation center axis by 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 linearly arranged in a line, and are rotatably provided on the lever 52. Of the plurality of rollers 53 arranged in a line, the roller 53 at one end (the roller at the left end 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 interval between the plurality of rollers 53 is 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 in 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 state of being closest to each other. As the lever 52 rotates clockwise in FIG. 8 to increase the angle θ, the interval between the wires 2 increases, and as shown in FIG. 10, the angle θ is 90 ° and the maximum (the wire 2 is most separated). State).

  As shown in FIG. 3, the first base moving mechanism 55 is provided on the base 101, and includes a drive motor 55a, which 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 55c of the first base moving mechanism 55. The second base moving mechanism 56 includes a drive motor, which is an electric motor, 56a, 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 a follower 56c of the second base moving mechanism 56. The first base moving mechanism 55 and the second base moving mechanism 56 can also adopt a known configuration, and thus a detailed description is omitted.

  The heating device 60 has a pair of hot air nozzles 60a and 60b for blowing hot air, and a nozzle moving mechanism that moves the pair of hot air nozzles 50a and 60b independently in the X, Y, and Z axis directions. One hot-air nozzle 60a mainly injects hot air from the roller 53 of the adjusting mechanism 50 toward the wire 2 toward the winding core 25. The other hot air nozzle 60b mainly injects hot air toward the wire 2 wound around the core 25. When the hot air is sprayed on the wire 2, the insulating coating 2 a is welded and the plurality of wires 2 are bonded to each other. Although a known configuration can be adopted for the nozzle moving mechanism, illustration and detailed description thereof are omitted. For example, similar to the above moving mechanism, a linear motion mechanism configured by an electric motor, a ball screw, a follower, and the like is used. It is configured by combining them in the axial direction. By moving the pair of hot air nozzles 60a and 60b by the nozzle moving mechanism, the position where hot air is injected can be changed.

  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 to the core 25. The guide unit 73 includes a guide unit 73 that guides the wire rod 2 toward the head 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 are omitted. For example, similar to the moving mechanism, a linear motion mechanism including an electric motor, a ball screw, a follower, and the like is used. It is configured by combining them in the axial direction.

  The clamp portion 72 is an air chuck mechanism that opens and closes the pair of claw portions 72a and 72b and grips the plurality of wires 2 from the X-axis direction. Since a known air chuck mechanism can be employed for the clamp section 72, a detailed description thereof will be omitted.

  The guide portion 73 has a slit 73a extending in the Y-axis direction at an interval (width in the X-axis direction) slightly larger than the diameter of the wire 2. Since the wire 2 traveling from the roller 53 toward the winding core 25 is accommodated in the slit 73 a of the guide portion 73, the deflection in the X-axis direction in the winding is regulated. The guide portion 73 is provided above the clamp portion 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 that cuts below the wire 2 gripped by the clamp part 72 is provided. Since the second cutting mechanism 75 can adopt a known configuration, detailed description is omitted. For example, as shown in FIG. 7, a pair of cutting blades 75 a and 75 b are driven to open and close to To cut it. 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 configured by 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 inputting and outputting information to and from a connected device. The controller 80 may be composed of a plurality of microcomputers. The controller 80 is programmed so as to be able to execute at least the processing required to execute the control according to the present embodiment or the modification. Note that the controller 80 may be configured as a single device, or may be divided into a plurality of devices, and each control in the present embodiment may be configured to perform distributed processing by the plurality of devices.

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

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

[Wire locking process]
In this step, the wire 2 at the beginning of winding is locked to the winding core 25. Specifically, first, as shown in FIG. 8, the end of the wire 2 wrapped around the roller 53 of the adjustment mechanism 50 through a tension device (not shown) for adjusting the tension of the wire 2 from a wire source is clamped. 70 is clamped. The wire 2 between the roller 53 and the clamp 72 is inserted into a slit 73a (see FIG. 7) in the guide 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 adjusted so that the wire 2 does not incline with respect to a YZ plane (a plane parallel to the paper surface) defined by the Y-axis and the Z-axis.

  The lever 52 is rotated so that the angle θ becomes substantially zero, and positions the plurality of rollers 53 so as to be arranged in the vertical direction. Thereby, as described above, the interval between the wires 2 becomes substantially zero, and the adjacent wires 2 come close to each other (for example, to a degree of slight contact). In other words, the state is such that the plurality of wires 2 are bundled together in one direction (Y-axis direction). 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 rod 2 approaches is referred to 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 to insert the wire 2 between the clamp part 72 and the roller 53 into the holding groove 26 of the core 25 (the 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 held between the core 25 and the shaft 31.

  Next, hot air is sprayed from the hot air nozzles 60a and 60b onto the wire 2 in the holding groove 26 sandwiched between the core 25 and the shaft 31, heated and held for a predetermined time. Thereby, the wires 2 in the holding groove 26 are bonded (welded) to each other.

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

  Next, as shown in FIG. 10, the lever 52 is rotated from the first position to set the angle θ to 90 °. Thus, the wire 2 between the 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”).

  In addition, 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 at the boundary between the outer periphery of the core 25 and the holding groove 26.

  Thus, 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 rod 2 is wound around the core 25 by rotating the spindle 22 by a predetermined rotation speed at a predetermined rotation speed. In the present embodiment, the core 25 rotates clockwise as indicated by the arrow in FIG. In the process of winding the wire 2 around the core 25, as shown in FIG. 11, the lever 52 is maintained at the second position, and the wires 2 are spaced apart from each other by a predetermined distance. Is wound. Further, the adjusting 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 injected from the hot air nozzles 60a and 60b toward the wire 2 between the roller 53 and the core 25 and the wire 2 wound around the core 25. Therefore, 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, a 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 located on the radially inner side is bonded to the wire 2 already wound on the core 25.

[End of winding 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. After that, the lever 52 is rotated from the second position to the first position again to bring the adjacent wire 2 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 sprayed from the hot air nozzles 60a and 60b onto the wire 2 between the roller 53 and the winding core 25 and heated to adhere 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 direction and the Z-axis direction, and the wire 2 (the wire at the end of winding) between the core 25 and the roller 53 is gripped by the clamp 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.

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

  Here, when the plurality of wires 2 are guided and wound around the core 25 in a state in which the wires 2 are bonded in advance, there is a difference in the winding length between the inner wire 2 and the outer wire 2 in the radial direction. There is a possibility that the winding of the wire 2 may not be neatly arranged due to peeling off of the bonding of the wire 2 or the like.

  On the other hand, in the present embodiment, at the beginning and end of winding, the lever 52 is set at the first position, the wires 2 are brought close to each other, and are bonded to each other. In the winding step, the wire 52 is guided to the core 25 and wound in a state where the wire 2 is separated from each other with the lever 52 in the second position, and then the plurality of wires 2 are bonded in a state wound around the core 25. . As described above, since the plurality of wires 2 are wound around the core 25 independently (without being bonded), a situation in which the adhesive is peeled off due to a difference in the length of the winding does not occur, and the wires 2 are accurately formed. Can be wound well.

  Further, the plurality of rollers 53 are provided on the lever 52 such that the rollers 53 are arranged in a straight line and the distance between the rollers 53 increases as the distance from the rotation center axis of the lever 52 increases. Thereby, the interval (angle interval α shown in FIG. 11) between the wires 2 from the roller 53 toward the winding core 25 can be made uniform. Therefore, it is possible to more reliably prevent the wires 2 from coming into contact with each other and being welded to each other on the way from the roller 53 to the core 25.

  In addition, since the wires 2 are guided to the core 25 at equal angular intervals, each of the plurality of wires 2 is uniformly bonded to the adjacent wires 2. As described above, since the bonding state (adhesion degree) between the adjacent wires 2 can be made uniform for all of the plurality of wires 2, the dimensional accuracy such as the thickness of the coil 1 (the dimension in the direction perpendicular to the paper surface in FIG. 1) and the external appearance are reduced Finishing accuracy is improved.

  Next, a modified example of the present embodiment will be described. The following modified examples are also within the scope of the present invention, and it is also possible to combine the following modified examples with the configurations of the above-described embodiments, or to combine the following modified examples. 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 approach each other. In the second position, the angle θ is 90 °, and the plurality of wires 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 wires 2 can be welded. The angle θ of the lever 52 at the second position may not be 90 ° as long as the wire 2 guided to the core 25 is separated without contact. As described above, in the lever 52, at the first position, the wires 2 traveling from the roller 53 to the core 25 are relatively close to each other, and at the second position, the wires 2 traveling from the roller 53 to the core 25 are relatively located. What is necessary is just to be comprised so that it may be spaced apart.

  In the above embodiment, in the winding step of winding the wire 2 around the core 25, the lever 52 is maintained at the second position. On the other hand, during the winding step, 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.

  In the above embodiment, the rollers 53 are provided in a line in a straight line, and are provided on the lever 52 such that the distance between the rollers 53 increases as the distance from the rotation center axis of the lever 52 increases. Thereby, the angular interval α of the wire 2 toward the winding core 25 can be made uniform. On the other hand, the roller 53 can make the wires 2 relatively close to each other and weld to each other when the lever 52 is at the first position, and relatively separate the wires 2 from each other when the lever 52 is at the second position. Any configuration can be adopted as long as welding can be prevented. For example, the interval between the rollers 53 can be set arbitrarily, and the rollers 53 may be provided on the lever 52 at equal intervals.

  Further, for example, the rollers 53 may be provided on the lever 52 side by side in a curved line (such as an involute curve). According to this, the angular interval α of the wire 2 can be adjusted not only by the interval between the rollers 53 but also by the shape of the curve, and the degree of freedom in design is improved.

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

  Further, in the above embodiment, the coil 1 is formed by winding eight wires 2, but the number of the wires 2 is not limited thereto, and may be 2 to 7 or 9 or more. .

  According to the above embodiment, the following effects can be obtained.

  In the present embodiment, since the interval between the wires 2 can be adjusted by the adjusting mechanism 50, when the wires 2 are started to be wound, the wires 2 are brought close to each other and adhered to each other, and when the wires 2 are wound around the core 25. Can be wound with the wires 2 separated from each other. As described above, while the wire 2 is adhered 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 state of being neatly aligned without twisting. Is done. Further, by bonding the plurality of wires 2 while being wound around the core 25, there is no occurrence of a situation in which the bonding is separated due to a difference in the winding length between the inner and outer wires 2. Therefore, the coil 1 in which the plurality of wires 2 are wound in a line in the radial direction can be manufactured with high accuracy.

  Further, in the present embodiment, the plurality of rollers 53 are provided on the lever 52 so that the distance between the rollers 53 increases as the distance from the rotation axis of the lever 52 increases. Thereby, the interval between the wires 2 from the roller 53 toward the winding core 25 can be made uniform, and the wires 2 can be more reliably prevented from contacting and welding to each other.

  In addition, since the wires 2 are guided to the core 25 at equal angular intervals, each of the plurality of wires 2 is uniformly bonded to the adjacent wires 2. Thereby, the dimensional accuracy of the coil 1 and the finish 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 wires 2 are wound in a radial direction is wound around a shaft and wound around the plurality of wires 2, and heads toward the core 25. An adjusting mechanism 50 for adjusting the interval between the plurality of wires 2 and a bonding device (heating device 60) for bonding the plurality of wires 2 wound around the core 25 are provided. A rotating member (lever 52) rotatable around a rotation center axis parallel to the axis of the shaft 25; and a plurality of wire rods provided on the rotating member (lever 52) arranged in a line at a predetermined interval and heading toward the core 25. And a plurality of rollers 53 around which the wires 2 are wound. The rotating member (lever 52) includes a first position in which the wires 2 from the rollers 53 to the core 25 are relatively close to each other, and a core from the rollers 53 to the core. Wires 2 toward 25 are relatively separated from each other 2 position, rotatably comprised between.

  In this configuration, since the interval between the wires 2 can be adjusted by the adjusting mechanism 50, the wires 2 can be separated from each other during the winding. As a result, the plurality of wires 2 are wound around the core 25 in a state of being neatly arranged without being twisted. In addition, by bonding the plurality of wires 2 in a state wound around the core 25, there is no possibility that the bonding may be separated due to a difference in the winding length between the inner and outer wires 2. Therefore, the coil 1 in which the plurality of wires 2 are arranged in the radial direction can be accurately wound.

  Further, in the coil manufacturing apparatus 100, the adjustment mechanism 50 has the adjustment motor 54 for rotating the rotating member (the lever 52), and the adjustment motor 54 is a pulse motor or a servo motor.

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

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

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

  In a coil manufacturing method for manufacturing a coil 1 in which a plurality of wires 2 are bonded in a line in a radial direction, a plurality of rollers 53 provided in a row on a rotating member (lever 52) are arranged at predetermined intervals. And a step of rotating the core 25 and winding the plurality of wires 2 guided from the rollers 53 around the core 25. When the wire 2 is wound around the core 25, the rotating member (the lever 52) is rotated so that the plurality of wires 2 are close to each other. The rotating member (the 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 to lock the wires 2 to the core 25, and the wires 2 are separated from each other during the winding. As a result, the plurality of wires 2 are wound around the core 25 in a state of being neatly arranged without being twisted. In addition, since the plurality of wires 2 that are bonded in advance are not wound around the core 25, but the plurality of wires 2 are wound around the core 25 independently (without bonding), the inner and outer wires 2 are not wound. Therefore, there is no possibility of occurrence of such a problem that the bonding is peeled off due to the difference in the winding length caused by the above. Therefore, the coil 1 in which the plurality of wires 2 are arranged in the radial direction can be accurately wound.

  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.

  As described above, the embodiment of the present invention has been described. However, the above embodiment is only a part of an application example of the present invention, and the technical scope of the present invention is not limited to the specific configuration of the above embodiment. Absent.

Claims (6)

A coil manufacturing apparatus for manufacturing a coil in which a plurality of wires are wound in a line in a radial direction,
A core that rotates about an axis and around which the plurality of wires are wound;
An adjusting mechanism that adjusts an interval between the plurality of wires toward the core;
An adhesive device for adhering the plurality of wires wound around the core,
The adjustment mechanism includes:
A rotating member rotatable around a rotation center axis parallel to the axis of the core,
A plurality of locking portions provided on the rotating member in a line at predetermined intervals, the plurality of wire rods each being hung toward the core, and
The rotating member,
A first position in which the wires going from the locking portion toward the core are relatively close to each other;
A coil manufacturing apparatus configured to be rotatable between a second position in which the wires going from the locking portion toward the core are relatively separated from each other. The coil manufacturing device according to claim 1,
The adjustment mechanism has an adjustment motor that rotates the rotating member,
A coil manufacturing device, wherein the adjustment motor is a pulse motor or a servo motor. The coil manufacturing device according to claim 1 or 2,
The coil manufacturing device, wherein the locking portion is a roller rotatably provided on the rotating member. The coil manufacturing device according to any one of claims 1 to 3,
The coil manufacturing device, wherein the bonding device is a heating device that heats the plurality of wires between the adjustment mechanism and the core. A coil manufacturing method for manufacturing a coil in which a plurality of wires are bonded side by side in a radial direction,
Locking the plurality of wire rods respectively hung on a plurality of locking portions provided in a row on the rotating member at predetermined intervals, to a winding core,
Winding the plurality of wires guided from the locking portion around the core by rotating the core,
When locking the wire to the core, rotating the rotating member so that the plurality of wires approach each other,
When winding the wire around the winding core, a coil manufacturing method in which the rotating member is rotated such that the plurality of wires are separated from each other. It is a coil manufacturing method of Claim 5, Comprising:
In the step of winding the plurality of wires, the plurality of wires between the locking portion and the core are heated to weld the plurality of wires.

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