JP2013171880A - Method for manufacturing coil component and method for connecting wire - Google Patents

Abstract

An object of the present invention is to provide a wire connecting method and a coil component manufacturing method capable of reducing defects in peeling off an insulating film and improving the reliability of connection between a lead portion of a wire and a terminal electrode.
In a state where a lead portion 10a of a wire 10 to which an insulating film 14 is applied is lifted from a connection planned portion 27a of a terminal metal fitting 20, a laser L is applied to both sides of the lead portion 10a in the Y-axis direction. The insulating film 14 formed on the outer periphery of the portion 10a is removed. The lead portion 10a from which the insulating coating 12 has been removed is brought into contact with the connection planned portion 27a of the terminal fitting 20, and the lead portion 10a is connected to the connection planned portion 27a of the terminal fitting 20.
[Selection] Figure 1

Description

  The present invention relates to a coil component manufacturing method and a wire connecting method.

  When manufacturing a coil component such as a transformer or other electronic components, a wire connecting method in which a lead portion of a wire is connected to a terminal fitting may be used. Since the wire of the coil component is provided with an insulation coating, it is necessary to remove the insulation coating of the lead portion in order to connect the lead portion of the wire to the terminal fitting.

  As a method for removing the insulating film from the coated wire, for example, as shown in Patent Document 1, a method is known in which a laser beam is simultaneously irradiated from both sides of the coated wire using a reflecting mirror to remove the insulating film. . However, this method does not consider the connection between the terminal electrode and the insulating coating wire, and has a problem that it is difficult to use when connecting the terminal electrode and the insulating coating wire.

  For example, when connecting a terminal electrode and an insulation coating wire, the lead portion of the wire is in contact with the terminal electrode, and the terminal electrode has obstacles such as a welded piece and a temporarily fixed piece, In the state, it is difficult to irradiate the lead portion of the wire with laser light from both sides.

  In particular, when a plurality of coil parts are collectively processed (without changing the posture), it is difficult to irradiate the laser beam so as to peel off the insulating film from both sides of the lead portion of the wire. Only the insulating film could be peeled off. If a peeling failure such as the remaining peeling of the insulating coating or the adhesion of peeling residue occurs, the connection between the lead portion of the wire and the terminal electrode may be incomplete, which may cause defective products.

  Moreover, if the output of the laser beam is increased too much in order to eliminate the peeling failure, the lead portion may be deformed or the wire may be broken. Again, the connection between the lead portion of the wire and the terminal electrode is incomplete. This may cause defective products.

JP-A-8-191518

  The present invention has been made in view of such a situation, and an object of the present invention is to reduce the problem of peeling of the insulating film and to improve the reliability of the connection between the lead portion of the wire and the terminal electrode. It is to provide a wire method and a method of manufacturing a coil component.

In order to achieve the above object, a wire connecting method according to the present invention includes:
In the state where the lead portion of the wire coated with the insulating coating is lifted from the connection portion of the terminal fitting, the both sides of the lead portion are irradiated with laser to remove the insulating coating formed on the outer periphery of the lead portion. Process,
A step of bringing the lead portion from which the insulating coating has been removed into contact with a planned connection portion of the terminal fitting, and connecting the lead portion to the planned connection portion of the terminal fitting.

A method for manufacturing a coil component according to the present invention includes:
In the state where the lead portion of the wire coated with the insulating coating is lifted from the connection portion of the terminal fitting, the both sides of the lead portion are irradiated with laser to remove the insulating coating formed on the outer periphery of the lead portion. Process,
A step of bringing the lead portion from which the insulating coating has been removed into contact with a planned connection portion of the terminal fitting, and connecting the lead portion to the planned connection portion of the terminal fitting.

  According to the wire connecting method and the coil component manufacturing method according to the present invention, a laser is applied to both sides of the lead portion in a state where the lead portion of the wire coated with the insulating film is lifted from the connection planned portion of the terminal fitting. Irradiate. For this reason, even if there are obstacles such as welded pieces and temporarily fixed pieces near the planned connection part of the terminal fitting, avoid those obstacles and irradiate the laser on both sides of the lead part It becomes possible.

  Therefore, according to the method of the present invention, it is difficult to cause a peeling failure such as the remaining peeling of the insulating coating and adhesion of peeling residue, and it is possible to reduce the peeling failure of the insulating coating. Further, since the laser beam is irradiated substantially uniformly along the entire circumference of the insulating coating, the adjustment of the output of the laser beam is facilitated, and the lead portion is prevented from being deformed or disconnected. Therefore, in the subsequent process, when the lead part from which the insulating coating has been removed is brought into contact with the connection planned part of the terminal metal fitting, and the lead part is connected to the connection planned part of the terminal metal fitting, the lead part of the wire and the terminal electrode Connection reliability is improved.

  Preferably, the metal fitting main body of the terminal fitting is formed with a winding auxiliary piece for temporarily fixing the tip of the lead portion, and the bending angle of the winding auxiliary piece with respect to the metal fitting main body is adjusted. Then, the lead portion is lifted from the connection planned portion of the terminal fitting, or the lead portion is brought into contact with the connection planned portion of the terminal fitting.

  Since the winding auxiliary piece is formed on the metal fitting body of the terminal fitting, the winding work of the wire is facilitated, and the lead fitting portion is connected to the terminal fitting connection portion by using this winding auxiliary piece. After that, the work of bringing the lead portion into contact with the connection planned portion of the terminal fitting becomes easy.

  After the lead portion is connected to the connection scheduled portion of the terminal fitting, the auxiliary winding piece may be removed from the terminal fitting. The winding auxiliary piece is removed because it is generally an unnecessary part after the product such as the coil component is completed.

  Preferably, the connection scheduled portion of the terminal fitting is a surface of the blade piece formed by folding a blade piece integrated with the metal fitting body so as to be foldable with respect to the metal fitting body.

  Conventionally, the blade piece is a portion for covering the lead portion of the wire from above, and is a portion that obstructs the laser beam when the laser beam is irradiated from both sides of the lead portion. Folding the wing piece that was in the way to the bracket body and folding it, the surface of the wing piece that is formed is made the connection planned part, avoiding obstacles and irradiating laser on both sides of the lead part Easy to do. A structure that removes the blade piece itself is also conceivable. However, compared to a structure that removes the blade piece itself, the lead portion can be easily and stably brought into contact with the connection portion of the terminal metal fitting. Connection is secure.

  Preferably, the metal fitting body of the terminal fitting is formed with a temporary holding piece that is foldable and integrated with the metal fitting body, and the lead between the temporary holding piece and the metal fitting body. The temporary holding piece can be temporarily held in the middle of the portion, and the planned connection portion is located between the temporary holding piece and the auxiliary winding piece along the longitudinal direction of the lead portion.

  In such a structure, by adjusting the bending angle of the winding auxiliary piece with respect to the metal fitting body, the lead part is lifted from the terminal metal fitting planned connection part, or the lead part is in contact with the terminal metal fitting connection part. This makes it easier to work.

  Preferably, microprisms are arranged on both sides of the lead part, and laser light from a single laser light source is irradiated at different timings through the microprisms on both sides of the lead part. By using a microprism, a plurality of laser light sources are not required, which is economical. In particular, the insulating film can be easily removed without changing the posture of the wire covering of the plurality of coil parts at once.

  Furthermore, it is possible to reduce the thermal load on the lead part by configuring each side of the lead part to irradiate laser light from a single laser light source through different microprisms at different timings. Become. Therefore, deformation and disconnection of the lead portion can be effectively prevented, and furthermore, the laser beam is irradiated substantially uniformly over the entire circumference of the lead portion, and the entire circumference of the insulating coating is surely peeled off.

  Preferably, the pair of microprisms arranged on both sides of the lead portion are arranged so that laser light emitted from one microprism toward the lead portion does not enter the other microprism. is there. In this case, the laser light from one microprism does not enter the other microprism, and the laser light can be effectively prevented from following the optical path in the reverse direction and damaging the laser light source.

  Preferably, after the lead portion from which the insulating coating has been removed is brought into contact with the connection planned portion of the terminal metal fitting, laser light is irradiated from a substantially vertical direction to the surface which is the connection planned portion of the terminal metal fitting. Then, the lead portion is connected to the connection planned portion of the terminal fitting. In this case, it is possible to satisfactorily join the terminal fitting and the lead portion of the wire in a state where there is no problem of peeling off the insulating coating.

FIG. 1 is a perspective view in the middle of manufacturing a coil component according to an embodiment of the present invention. FIG. 2 is a plan view of a peeling apparatus that performs a peeling process of the insulating film in the lead portion of the coil component shown in FIG. FIG. 3 is a cross-sectional view of the microprism along the line III-III shown in FIG. FIG. 4 is a schematic view of an optical system used in the peeling apparatus shown in FIG. 5 (A) to 5 (C) are schematic views showing each step of the connecting method including a stripping process of the insulating film in the lead part of the coil component shown in FIG. FIG. 6 is a schematic perspective view showing an irradiation state of a laser beam used for the insulating film peeling process at the lead part of the coil component shown in FIG. Fig.7 (a)-FIG.7 (d) are schematic which shows the peeling state of an insulating film.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
As shown in FIG.

The coil component 2 according to an embodiment of the present invention has a core 8. The core 8 is made of a ferrite material such as (Ni, Zn) Fe ₂ O ₄ , (Mn, Zn) Fe ₂ O ₄ , CoFe ₂ O ₄ , CuFe ₂ O ₄ , and at least one wire 10 is wound. It has the core part 4 to be rotated and a pair of flange parts 6 formed at both ends in the axial direction of the core part 4. The core 8 may be configured using not only a ferrite core but also other ceramic scores such as alumina.

  At least one terminal fitting 20 is attached to each collar portion 6, and a lead portion 10 a that is an end portion of the wire 10 wound in the winding axis (X-axis) direction by the winding core portion 4 is a terminal fitting. 20. FIG. 1 shows a state before each lead portion 10a of the wire 10 is connected to a terminal fitting after the wire 10 is wound around the winding core portion 4 of the core 8 in a coil shape in the winding axis (X-axis) direction. Show.

  As each wire 10, for example, a wire material in which an insulating coating is formed on the surface of a conducting wire such as a round wire or a rectangular enamel wire (magnet wire), a stranded wire, or a multilayer wire is used. The material of the insulating coating is not particularly limited, and examples thereof include polyurethane, polyester, polyamideimide, polyimide, and polyesterimide.

  In the present embodiment, each terminal fitting 20 is made of, for example, Fe, Ni, Cu (tough pitch copper or phosphor bronze), A1, or a metal such as those plated with Sn. Each terminal fitting 20 is formed integrally with each first fitting main body 22 by being bent with respect to each first fitting main body 22 and the first fitting main body 22 mounted on the end surface 6a in the X-axis direction of each flange 6 of the core 8. And a second metal fitting body 24 attached to the central portion in the Y-axis direction of the upper side surface 6b in the Z-axis direction of the portion 6. In the drawing, the X axis, the Y axis, and the Z axis are perpendicular to each other, and the X axis coincides with the winding axis direction of the wire 10.

  The first metal fitting main body 22 includes a central piece 22a extending in the Z-axis direction at the center portion in the Y-axis direction on the end surface 6a of each flange portion 6, side piece pieces 22b positioned on both sides in the Y-axis direction of the central piece 22a, and 22c, and these are integrally continuous at a base piece 22d located below in the Z-axis direction. The second metal fitting body 24 described above is formed continuously at the Z-axis direction tip of the central piece 22a.

  Of the side pieces 22b and 22c, the winding auxiliary piece 26 is at a predetermined angle θ with respect to the first metal fitting body 22 at the upper end in the Z-axis direction of either one of the side pieces 22b (FIG. 5A). (Refer to the above). A protruding piece 26a protruding in the Y-axis direction is integrally formed at the tip of the winding auxiliary piece 26, and a locking piece 28 is integrally formed at the tip of the protruding piece 26a. is there.

  In the single coil component 2, the terminal fittings 20 facing each other are the same so that the locking piece 28 formed on the winding auxiliary piece 26 is positioned at a substantially central position in the Y-axis direction of the core 8. Consists of shaped metal fittings. That is, in the XY axis plane, a pair of terminal fittings 20 having the same shape are arranged at both ends of the core 8 in the X-axis direction so that the winding auxiliary pieces 26 are point-symmetric with each other. In order to attach the terminal fitting 20 to the flange portion 6 of the core 8, means such as adhesion, caulking, fitting, and insertion are employed.

  The second metal fitting body 24 has a base piece 24 a that is integrally formed with the same width in the Y-axis direction as the central piece 22 a of the first metal fitting body 22. A temporary holding piece 25 and a blade piece 27 are integrally formed on the base piece 24a. The terminal fitting 20 including the temporary holding piece 25, the blade piece 27, and the base piece 24a is formed by cutting a single plate material and then bending it.

  The temporary holding piece 25 is in an open state with respect to the base piece 24a at the stage of the winding process of the wire 10, and the lead portion 10a of the wire 10 is sandwiched between the temporary holding piece 25 and the base piece 24a. Not in. However, the blade piece 27 is preferably bent so as to be folded over the base piece 24a at the stage of the winding process of the wire 10 or at the stage of the previous process. This is to prevent the winding from getting in the way, but if it does not get in the way of the winding, the base part of the blade piece 27 is also similar to the temporary holding piece 25 until the previous stage of the insulating film peeling step. You may open at the angle of 160 to 180 degree | times with respect to the piece 24a.

  In the winding process of the wire 10 with respect to the core portion 4 of the core 8, a winding device with a fryer is used. First, the tip of the lead portion 10a corresponding to the winding start end of the wire 10 is wound around the locking piece 28 of one terminal fitting 20, passed over the blade piece 27 folded on the base piece 24a, The wire 10 is wound in the winding axis direction X along the outer periphery of the winding core portion 4 through the gap between the temporary holding piece 25 and the base piece 24a.

  At the stage where the winding of the wire 10 around the core 4 is completed, the lead 10a corresponding to the end of winding of the wire is connected to the gap between the temporary holding piece 25 and the base piece 24a in the other terminal fitting 20. Is passed over the blade piece 27 folded on the base piece 24a, and finally wound around the locking piece 28 of the other terminal fitting 20.

  In the winding process, when the temporary holding piece 25 is open with respect to the base piece 24a, the temporary holding piece 25 is bent so as to overlap the base piece 24a, and the lead portion 10a sandwiched therebetween. Is temporarily fixed to the second metal fitting body 24. In the winding process, if the blade piece 27 is open to the base piece 24a, the blade piece 27 is bent so as to be completely folded over the base piece 24a after the winding process is completed. In addition, a part of the lead portion 10a is positioned. The state is shown in FIG. A surface of the blade piece 27 bent so as to be completely folded with respect to the base piece 24a becomes a connection planned portion 27a described later.

  The coil component 2 shown in FIG. 1 that has completed the winding process in this way is set in the insulating film peeling apparatus 100 shown in FIG. In the coil component 2 set in the peeling apparatus 100, the bending angle θ of the winding auxiliary piece 26 with respect to the first metal fitting body 22 is adjusted to be 90 degrees or more. By setting the bending angle θ to 90 degrees or more, preferably 100 to 120 degrees, as shown in FIG. 5 (A), the lead portion 10a does not come into contact with the planned connection portion 27a of the terminal fitting 20. The part 10b can be lifted from the connection scheduled part 27a. Such adjustment of the bending angle θ may be performed before the winding process.

  The peeling device 100 shown in FIG. 2 preferably includes a plurality of peeling devices 40, and the plurality of peeling devices 40 are preferably arranged at predetermined intervals along the Y-axis direction. Each peeling device 40 includes a pair of prism holding devices 42 that hold each of the pair of microprisms 30. The prism holding devices 42 are arranged on both sides in the X-axis direction so that the pair of microprisms 30 are parallel to each other along the winding axis (X-axis) direction of each coil component 2 and on both sides of the prism 30 in the Y-axis direction. Placed in.

  Each prism holding device 42 holds the microprism 30 so that the microprism 30 can be rotated and adjusted around the X axis, and the position can be adjusted in the X axis, Y axis, and Z axis directions. As shown in FIGS. 3 and 6, control of the rotation angle around the X axis of each microprism 30 by each prism holding device 42 and position adjustment of each microprism 30 in the X axis, Y axis, and Z axis directions are as shown in FIGS. Laser light L emitted from one microprism 30 toward the lead portion 10a of the coil component 2 is performed so as not to enter the other microprism 30.

  A single laser of the optical system shown in FIG. 4 is provided in each lead portion 10a of the plurality of coil components 2 held by the plurality of devices 40 shown in FIG. Laser light L is irradiated using the light source 50. As the laser light source 50, for example, an SHG laser having a wavelength λ of 532 nm is used, but the present invention is not limited to this, and other laser light sources may be used.

  The laser light L emitted from the laser light source 50 passes through an expander 52 having functions of beam expansion and collimator, is reflected by an X-axis galvano mirror 54, is reflected or transmitted by a Y-axis galvano mirror 56, and is an fθ lens 58. And sent to each microprism 30. The laser light incident on the microprism 30 is applied to both sides of the coil component 2 installed on the support base 60 in the Y-axis direction.

  By adjusting the angles of the X-axis galvanometer mirror 54 and the Y-axis galvanometer mirror 56, the laser light L emitted from the single laser light source 50 is irradiated with the four irradiations of the plurality of pairs of microprisms 30 shown in FIG. It sequentially enters any one of the positions S1 to S4.

  With regard to which of the four irradiation positions S1 to S4 of the plurality of pairs of microprisms 30 shown in FIG. 2 is incident, for example, initially, the inside of the pair of microprisms 30 positioned on the leftmost side in FIG. The first irradiation position S1 is irradiated with the laser beam L for 0.5 to 1.5 seconds. Immediately thereafter, the second irradiation position S2 is irradiated with the laser light L for the same time as the irradiation time at the first irradiation position S1, and sequentially, similarly, the third irradiation position S3 and the fourth irradiation position S4 are irradiated. Irradiate.

  Thereafter, a pair of microprisms 30 held in the peeling device 40 located next to the peeling device 40 that has been irradiated are also irradiated with laser light in the same manner, and the peeling devices that have been irradiated in order. The pair of microprisms 30 held in the peeling device 40 located next to 40 is irradiated with laser light in the same manner.

  By sequentially irradiating the laser beam L to the predetermined irradiation positions S1 to S4 of the microprism 30 in this way, the Z-axis of the connection scheduled portion 27a in the coil component 2 shown in FIGS. 1 and 5A. As shown in FIG. 3 and FIG. 6, the laser beam L is irradiated at different timings from both sides in the Y-axis direction to the lead portion 10 a positioned away in the direction.

  According to the method of the present embodiment, for example, the lead portion 10a of the wire 10 on which the insulating film 14 shown in FIG. 7A is applied is connected to the planned connection portion 27a of the terminal fitting 20 as shown in FIG. 5A. As shown in FIGS. 3 and 6, the laser beam L is irradiated from both sides of the lead portion 10a in the Y-axis direction. For this reason, even if there are obstacles such as welded pieces and temporarily fixed pieces near the planned connection portion 27a of the terminal fitting 20, avoid these obstacles and move the lead portion 10a in the Y-axis direction. It becomes possible to irradiate the laser beam L on both sides.

  Therefore, in the method according to the present embodiment, it is difficult to cause a peeling failure such as adhesion of the peeling residue 14a of the insulating film 14 shown in FIG. 7B or the peeling residue 14b shown in FIG. 7C. As shown, the insulating film 14 can be completely removed at necessary portions. Therefore, in the method of this embodiment, the outer periphery of the conducting wire 12 of the wire 10 can be completely exposed, and it is possible to reduce the peeling defect of the insulating coating.

  Further, as shown in FIG. 6, since the laser light L is irradiated substantially uniformly along the entire circumference of the insulating coating 14, the adjustment of the output of the laser light L becomes easy, as shown in FIG. Deformation and disconnection (not shown) of the lead portion 10a are prevented. Accordingly, when the lead portion 10a is connected to the connection scheduled portion 27a of the terminal fitting 20 in the subsequent process, the reliability of the connection between the lead portion 10a of the wire 10 and the terminal electrode 20 is improved.

  When connecting the lead portion 10a to the scheduled connection portion 27a of the terminal fitting 20, specifically, for example, as shown in FIG. 5B, first, the first fitting main body 22 of the winding auxiliary piece 26 is used. The bending angle θa is changed so as to be smaller than the angle θ shown in FIG. As a result, the lead portion 10a from which the insulating coating 14 has been removed can be maximally contacted (preferably pressed) with the planned connection portion 27a of the terminal fitting 20. In this state, a laser beam having an output different from that of the laser beam for insulating film peeling is irradiated from above in the Z-axis direction from above in a direction substantially perpendicular to the surface of the connection scheduled portion 27a.

  In the state shown in FIG. 5B, the insulating film 14 is removed from the lead portion 10a as shown in FIG. 5C by irradiating the surface of the connection-scheduled portion 27a with laser light from above in the vertical direction. The welded wire 12 and the blade piece 27 are melted to form the welded portion 10b, the lead wire 12 of the lead portion 10a is firmly connected to the blade piece 27, and the electrical connection between the wire 12 and the terminal fitting 20 is established. Achieved.

  At the same time, due to the elastic force of the winding auxiliary piece 26 of the terminal fitting 20, the excessive lead portion 10a 'is automatically separated from the welded portion 10b. Thereafter, the winding auxiliary piece 26 is cut and removed from the first metal fitting body 22 in the vicinity of the bent portion with the first metal fitting body 22. At the same time, the excessive lead portion 10 a ′ is also removed from the coil component 2 together with the winding auxiliary piece 26. Since the coil auxiliary piece 26 is generally an unnecessary part after the coil component 2 is completed, the winding auxiliary piece 26 is removed.

  As described above, in the method of the present embodiment, the winding auxiliary piece 26 is formed on the first metal fitting body 22 of the terminal metal fitting 20, so that the wire 10 can be easily wound, and this winding Using the auxiliary piece 26, the lead portion 10a is lifted from the connection planned portion 27a of the terminal fitting 20, and thereafter, the operation of bringing the lead portion 10a into contact with the connection planned portion 27a of the terminal fitting 20 is facilitated.

  The blade piece 27 is a portion that is conventionally covered from above the lead portion 10a of the wire 10, and is a portion that obstructs the laser light when the laser beam is irradiated from both sides of the lead portion 10a. is there. The surface of the blade piece 27 that is formed by folding and folding the blade piece 27 that has been obstructed with respect to the second metal fitting body 24 is used as a connection-scheduled portion 27a, thereby avoiding an obstacle and leading the lead portion. It becomes easy to irradiate the laser beam L on both sides of 10a. In addition, although the structure which removes blade piece 27 itself is also considered, compared with the structure which removes blade piece 27 itself, only by adjusting bending angle (theta) a of the coil auxiliary piece 26, the lead | read | reed part 10a is attached to the terminal metal fitting 20. Therefore, the lead portion 10a and the terminal fitting 20 are securely connected to each other.

  In the present embodiment, the second metal fitting body 24 of the terminal metal fitting 20 is formed with a temporary holding piece 25 that is foldably integrated with the metal fitting main body 24, and the temporary holding piece 25 and the metal fitting body 24. The temporary holding piece 25 can be temporarily held in the middle of the lead portion 10a and is folded between the temporary holding piece 25 and the winding auxiliary piece 26 along the longitudinal direction of the lead portion 10a. The scheduled connection portion 27a of the blade piece 27 is located.

  In the case of such a structure, by adjusting the bending angle θ or θa of the winding auxiliary piece 26 with respect to the first metal fitting body 22, the lead portion 10 a is lifted from the planned connection portion 27 a or the lead portion 10 a is The operation | work made to contact the connection plan part 27a of the terminal metal fitting 20 becomes easy.

  Furthermore, in the present embodiment, as shown in FIG. 2, microprisms 30 are arranged on both sides of each coil component 2 in the Y-axis direction, and each microprism 30 is passed through a single laser light source 50 shown in the drawing. Are irradiated on both sides of the lead portion 10a at different timings. Use of the microprism 30 eliminates the need for a plurality of laser light sources and is economical. In particular, as shown in FIG. 2, it is easy to remove the insulation coating by controlling the angles of the mirrors 54 and 56 shown in FIG. 4 without changing the posture of the wire covering of the plurality of coil parts 2 at once. become.

  Furthermore, it is possible to reduce the thermal load on the lead portion 10a by irradiating laser light from a single laser light source at different timings through the microprisms 30 on both sides of the lead portion 10a. Is possible. Therefore, the deformation and disconnection of the lead portion 10a can be effectively prevented, and the laser beam is irradiated substantially uniformly over the entire circumference of the lead portion 10a, and the entire circumference of the insulating coating 14 is surely peeled off.

  In addition, in the present embodiment, the pair of microprisms 30 disposed on both sides of the lead portion 10 a is irradiated with the laser light L emitted from one microprism 30 toward the lead portion 10 a, and the other microprism 30 is irradiated with the laser beam L. It arrange | positions so that it may not enter. Therefore, the laser light from one microprism 30 does not enter the other microprism 30, and the laser light L can be effectively prevented from following the optical path in the reverse direction and damaging the laser light source 50.

The present invention is not limited to the above-described embodiment, and can be variously modified within the scope of the present invention.
For example, in the above-described embodiment, the wire connecting method used in the coil component manufacturing method has been described. However, the wire connecting method according to the present invention includes a transformer, a heater, a reed relay, a resistor in addition to the coil component. The present invention can also be applied to a method of joining lead portions and terminal electrodes in passive components with leads such as capacitors and electronic components such as small connectors.

DESCRIPTION OF SYMBOLS 2 ... Coil parts 4 ... Core part 6 ... Eaves part 8 ... Core 10 ... Wire 10a ... Lead part 12 ... Conductor 14 ... Insulation coating 20 ... Terminal metal fitting 22 ... First metal fitting main body 24 ... Second metal fitting main body 25 ... Temporary presser Piece 26 ... Winding auxiliary piece 27 ... Blade piece 27a ... Connection scheduled part 30 ... Micro prism 40, 100 ... Stripping device 50 ... Laser light source

Claims (9)

In the state where the lead portion of the wire coated with the insulating coating is lifted from the connection portion of the terminal fitting, the both sides of the lead portion are irradiated with laser to remove the insulating coating formed on the outer periphery of the lead portion. Process,
A method of manufacturing a coil component, comprising: bringing the lead portion from which the insulating coating has been removed into contact with a planned connection portion of the terminal fitting, and connecting the lead portion to the planned connection portion of the terminal fitting.   A winding auxiliary piece for temporarily fixing the tip of the lead portion is formed on the metal fitting body of the terminal metal fitting, and the terminal is adjusted by adjusting a bending angle of the winding auxiliary piece with respect to the metal fitting body. The method of manufacturing a coil component according to claim 1, wherein the lead part is lifted from a connection planned part of the metal fitting, or the lead part is brought into contact with the connection planned part of the terminal metal fitting.   3. The method of manufacturing a coil component according to claim 2, wherein after the lead portion is connected to the connection scheduled portion of the terminal fitting, the winding auxiliary piece is removed from the terminal fitting.   The connection scheduled portion of the terminal metal fitting is a surface of the blade piece formed by folding a blade piece integrated with the metal fitting body so as to be foldable with respect to the metal fitting body. The manufacturing method of the coil components in any one of.   The metal fitting body of the terminal fitting is formed with a temporary holding piece that is foldable and integrated with the metal fitting body, and the intermediate portion of the lead portion between the temporary holding piece and the metal fitting body. The temporary connection piece can be temporarily held, and the connection-scheduled portion is located between the temporary hold piece and the auxiliary winding piece along the longitudinal direction of the lead portion. The manufacturing method of the coil components in any one.   The microprisms are respectively disposed on both sides of the lead part, and laser light from a single laser light source is irradiated at different timings through the microprisms on both sides of the lead part. Item 6. A method for manufacturing a coil component according to any one of Items 1 to 5.   The pair of microprisms arranged on both sides of the lead part is arranged so that laser light emitted from one microprism toward the lead part does not enter the other microprism. 6. A method for manufacturing a coil component according to 6.   By bringing the lead portion from which the insulating coating has been removed into contact with the connection planned portion of the terminal metal fitting, by irradiating the surface of the terminal metal fitting connection portion with a laser beam from a substantially vertical direction, The manufacturing method of the coil component in any one of Claims 1-7 which connects a lead part to the connection plan part of the said terminal metal fitting. In the state where the lead portion of the wire coated with the insulating coating is lifted from the connection portion of the terminal fitting, the both sides of the lead portion are irradiated with laser to remove the insulating coating formed on the outer periphery of the lead portion. Process,
Connecting the lead portion from which the insulating coating has been removed to the connection planned portion of the terminal fitting, and connecting the lead portion to the connection planned portion of the terminal fitting.

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