JP4275120B2 - Coil parts manufacturing method and manufacturing apparatus - Google Patents

Description

  The present invention relates to a method and an apparatus for manufacturing a coil component, and more particularly, to a method and an apparatus for peeling off a coating of a wound coated conductor.

  Conventionally, an insulated conductor is used as a conductor to form a coil component. As an example, this insulated conducting wire uses a copper wire or the like as a core wire, and uses a polyurethane coating as an insulating coating covering the core wire. Since polyurethane coating is not very strong against heat, when connecting conductors using polyurethane coating to the electrode of the coil component, it is not necessary to peel off the coating in advance. The coating was peeled off.

In addition, depending on the type of electronic device in which the coil component is used, the coil component may be required to have high durability, specifically heat resistance. In this case, polyamideimide may be used as an insulation coating. is there. Since polyamide imide has a higher melting point than polyurethane, it is not easy to peel off the polyamide imide coating by heat at the time of connection. Therefore, it is necessary to peel the coating before connecting, and a method of mechanically peeling with a rotary blade or the like, and a method of melting and peeling the coating with a laser as shown in Patent Document 1, have been proposed.
JP 2000-299240 A

  However, in the conventional coating peeling method, when the mechanical peeling is performed, the core wire may be damaged, and the damaged portion may be a weak point in strength. In the case of coating removal by laser, the core wire is not scratched, but when the coating is melted, a part of the molten coating or a part of the carbonized coating may remain attached to the core wire. If these deposits are sometimes present, reliable connection cannot be achieved, and there is a risk of poor contact and insufficient strength at the connection points.

  Then, an object of this invention is to provide the method and apparatus which peel a coating | cover reliably and manufacture a coil component, without reducing the various properties of conducting wire.

In order to achieve the above object, a core composed of a core part and a pair of flanges provided at both ends of the core part, electrodes provided in the pair of collar parts, and insulation covering the core wire and the core wire A coil part manufacturing method comprising: an insulated conductor having a coating; and a winding process for winding the insulated conductor around a winding core, and connecting the insulated conductor to the electrode before and after the winding process. A cutting process for cutting to a possible length, a coating peeling process for irradiating a pulsed laser to the insulated conductor, generating bubbles at the interface between the core wire and the insulating coating, expanding the bubbles to rupture and scatter the coating; And a connecting step for connecting the insulated conductive wire from which the coating has been peeled off to the electrode. In the coating peeling process, the coil component is stored in a storage pallet in which a recess capable of storing the coil component is formed, and the coil component is urged to one side by a positioning member arranged on the storage pallet to A coil component positioning step that abuts on one side wall surface of the coil component to define the position of the coil component in the recess, and a mask member that covers the coil component and the positioning member covers the non-laser irradiation portion and an irradiation port formed in the mask member. A mask process for defining the laser irradiated portion of the coil component, and an arranging process for arranging the storage pallet on a table that is arranged on the locus of the pulse laser and movable in a direction substantially orthogonal to the pulse laser irradiation direction. Contains.

According to such a method, the coating can be peeled off from the core wire without melting. Accordingly, it is possible to prevent the molten scum and carbide of the coating from remaining on the core wire, and when connecting to the electrode at the portion where the conductive wire is peeled off, the connection error is reduced and the workability of the connection can be improved. Further, the position of the coil component can be accurately specified on the storage pallet. Therefore, the coating peeling position can be made constant, and the coating peeling can be performed with high accuracy. In addition, since the position of the coil component is specified using the storage pallet, it is possible to accurately specify the position of the plurality of coil components by providing a plurality of recesses on the storage pallet, and stripping the coating of a large number of coil components. It is possible to perform accurately even when performing.

  In the coil component manufacturing method described above, it is preferable that a suction mechanism is provided in the vicinity of the locus of the pulse laser and in the vicinity of the coil component, and the coating scattered in the coating peeling process is sucked by the suction mechanism.

  According to such a method, the peeled coating can be removed. As a result, no coating debris remains on the coil component, so that defects such as disconnection do not occur and it is possible to suppress the occurrence of a connection failure even during connection. Furthermore, the processing time can be shortened by performing suction simultaneously with the coating peeling step.

  In the above method, the coating peeling step preferably includes a focal position adjusting step for adjusting the focal point of the pulse laser to the position where the pulse laser on the surface of the core wire is irradiated. By adjusting the focal position to the surface of the core wire, the interface between the core wire and the insulation coating can be suitably heated, and bubbles can be generated suitably.

  Moreover, it is preferable that a coating peeling process includes the fixing process which fixes the to-be-peeled position of an insulated conducting wire so that a fixed distance may be maintained with respect to the irradiation apparatus with which a pulse laser is irradiated. By fixing the peeled position when irradiating the pulse laser, it is possible to prevent the peeled position from deviating from the focal position or the irradiation position due to an impact caused by irradiation.

  The wavelength of the pulse laser is preferably such that the pulse laser can pass through the insulating coating. When the wavelength of the pulse laser is a wavelength that can pass through the insulating coating, the interface between the insulating coating and the core wire can be suitably heated without directly heating the insulating coating.

  The pulse laser irradiation time is preferably 100 nsec or less. This is because if the irradiation time of the pulse laser exceeds 100 nsec, the insulating coating may be heated and melted by the pulse laser.

  Further, it is preferable that the coating peeling process is performed a plurality of times by irradiating the pulse laser with the irradiation direction being changed to the circumferential direction of the peeling position of the insulated conductor. Since the pulse laser irradiation is performed multiple times by changing in the circumferential direction of the peeling position of the insulated lead wire, the pulse laser is emitted from at least two directions to the lead wire, so that the portion not irradiated with the pulse laser can be eliminated. The insulating coating can be more preferably peeled off.

  Moreover, it is preferable that the pulse laser irradiation is performed only once on an arbitrary peeling position of the insulated conductor.

  Further, the present invention is a coating peeling apparatus for peeling a coating of a coated conductor wound around a coil component, wherein a work base carrying the coil component, a laser irradiation device for irradiating a laser, and a laser irradiation direction are set. Provided a coating peeling device with an optical device that changes the direction toward the workpiece base and converges the laser so that the focal point comes on the workpiece base, and a suction mechanism provided near the laser locus and near the workpiece base To do. The work base of this coating peeling apparatus is arranged on a table that is movable in a direction perpendicular to the laser irradiation direction, a storage pallet that is arranged on the table and has a recess that can store coil components, and a storage pallet. The coil component is urged to one side orthogonal to the laser irradiation direction to come into contact with one side wall surface in the recess to define the position of the coil component in the recess, and the coil component and the positioning member are covered. And a mask member having an opening formed in a portion corresponding to the peeling position of the coated conductor, and a coil component coating / peeling device.

  According to such a configuration, the laser component can be peeled off in a state where the position of the coil component is accurately defined. Therefore, the coating can be peeled off from the core wire without melting, and the coating peeling can be performed by accurately specifying the coating peeling position, thereby reducing peeling mistakes.

  According to the method and apparatus for manufacturing a coil component of the present invention, reliable coating and peeling can be performed without deteriorating various properties of the conducting wire.

  A method and apparatus for manufacturing a coil component according to an embodiment of the present invention will be described with reference to FIGS. First, the coil component and the process of winding the conductive wire around the coil component will be described with reference to FIGS. The coil component 1 is a common mode filter used for a differential signal interface, and has a dimension of about 4 mm in the longitudinal direction. As shown in FIG. 1, a drum-type core 2 and two insulated conductors 3 are used. And the metal terminal 9 and the metal terminal 10 which are electrodes. The core 2 is formed through a process in which magnetic powder such as ferrite is compressed and sintered.

  As shown in FIG. 2, the core 2 includes a core portion 5 having a substantially rectangular cross section perpendicular to the longitudinal direction, and a pair of flange portions 4, 4 that are provided at both ends in the longitudinal direction of the core portion 5. Composed. Since the flanges 4 and 4 have substantially the same shape, only one side will be described unless otherwise specified. 2, the longitudinal direction of the core part 5 is the x-axis direction, the width direction of the core part 5 is the y-axis direction, and the direction orthogonal to the x-axis direction and the y-axis direction is the z-axis direction. Define and explain.

  As shown in FIG. 2, the flange portion 4 includes a main body portion 6 which is a portion connected to the core portion 5, a sub-body portion 7 extending from the main body portion 6 in the y-axis direction, and a sub-body. It is composed of a sub barrel portion 8 extending in the direction opposite to the portion 7. The auxiliary body part 7 and the auxiliary body part 8 are configured to be plane-symmetric with respect to the zx plane passing through the width center of the winding core part 5.

  The main body portion 6 is formed in a substantially rectangular parallelepiped shape in which the z-axis direction is the longitudinal direction and the y-axis direction is the width direction and has the same width as the core portion 5. The sub barrel portion 7 and the sub barrel portion 8 are formed in a substantially rectangular parallelepiped shape extending in the y axis direction from both side surfaces orthogonal to the y axis direction of the main barrel portion 6 and having the z axis direction as a longitudinal direction. Moreover, the collar part 4 is comprised so that the z direction one surface of the main trunk | drum 6 and the z direction one surface of the sub trunk | drum 7 and the sub trunk | drum 8 may become the same plane.

  As shown in FIG. 1, a metal terminal 9 and a metal terminal 10 are attached to the auxiliary body 7 and the auxiliary body 8. The metal terminal 9 is formed in a substantially U shape from a pair of leg portions 9A and 9C extending from both ends of the base portion 9B. In this metal terminal 9, the extending direction of the leg portion 9A and the leg portion 9C is the x direction, the long side direction of the base portion 9B is the z direction, and the surface perpendicular to the z direction of the sub trunk portion 7 is the leg portion 9A and the leg portion. It is nipped by the part 9 </ b> C and attached to the sub trunk part 7.

  A section 9D extends from the side in the extending direction of the leg 9A. A fixing portion 9F is provided on the leg 9A free end side of the section 9D, and a melting portion 9E is provided on the leg 9A fixing base end side. Further, the leg portion 9C is a mounting portion that is electrically joined to the electrode on the substrate when the coil component 1 is mounted on the substrate (not shown). In addition, the metal terminal 9 and the metal terminal 10 are attached to the sub barrel portion 7 and the sub barrel portion 8, respectively, and have a mirror shape with the zx plane interposed therebetween. Therefore, the metal terminal 10 is also formed in a substantially U-shape from the pair of leg portions 10A and 10C extending from both ends of the base portion 10B, and the leg portion 10A is provided with a section 10D, a fixing portion 10F, and a melting portion 10E. It has been. The metal terminal 10 is mounted on the sub barrel 8 in the same manner that the metal terminal 9 is mounted on the sub barrel 7.

  As shown in FIG. 3, the two insulated conductors 3 wound around the core portion 5 are each composed of a core wire 3 </ b> A that is a copper wire and an insulating coating 3 </ b> B made of polyamideimide. The insulated conductor 3 has an outer diameter of about 90 μm and a core wire diameter of about 70 μm. A connecting point 3C is defined at both ends of the insulated conducting wire 3, and the connecting point 3C becomes a peeling point described later.

  In order to peel off the insulation coating 3B at the connecting portion 3C, the coil component 1 is peeled off by a laser peeling machine 101 as shown in FIG. The laser peeling machine 101 mainly includes a laser irradiation device 103 built in a frame 102, a controller 104, a work base 105, and a suction nozzle 106.

The laser irradiation apparatus 103 is a YAG laser irradiation apparatus that irradiates a pulse laser. The wavelength of the irradiated pulse laser is 1064 nm, the pulse width is 100 nsec or less, preferably 40 nsec or less, the frequency is 20 Hz, and the irradiation energy amount is 230 mJ. / Cm ² is an apparatus that is about ± 10%. The laser irradiation apparatus 103 includes a mirror 103A that reflects the irradiated pulse laser to the work base 105 side, and an optical system 103B that is a lens member that suitably irradiates the coil component 1 with the pulse laser reflected by the mirror 103A. ing.

  The controller 104 supplies power to the laser irradiation apparatus 103 and controls the output of the laser irradiation apparatus 103. The work base 105 includes an XY table 105 </ b> A that can move in a plane perpendicular to the irradiation direction of the pulse laser, and a storage pallet 107 that holds the coil component 1. As shown in FIG. 5, the storage pallet 107 is made of a substantially square plate material. On the surface, a plurality of grooves 108 having the same shape are formed in parallel.

  The groove 108 is formed so that its width is larger than the length in the y-axis direction of the core 2 (FIG. 1). As shown in FIGS. 6 and 7, a rail portion 108 </ b> A that is substantially parallel to the extending direction of the groove 108 is provided at the substantially center of the bottom surface of the groove 108.

  As shown in FIG. 8, the top surface of the rail portion 108A is one step higher than the bottom surface of the groove 108, and the distance L from the top surface of the rail portion 108A to the top surface of the storage pallet 107 is that of the core 2 (FIG. 1). It is configured to be shorter than the length in the z-axis direction. As shown in FIGS. 6 and 7, the rail portion 108A is provided with convex portions 108B at equal intervals in the extending direction. The intervals from one convex portion 108B to the other convex portion 108B are all equal, and the interval is configured to be larger than the length of the core 2 (FIG. 1) in the x-axis direction. The convex portion 108B is configured such that the width thereof is equal to the width of the rail portion 108A. Therefore, the inner wall of the groove 108 and the convex portion 108 </ b> B define a concave portion 108 a that can accommodate the coil component 1.

  As shown in FIG. 8, the coil component 1 is mounted on the rail portion 108 </ b> A on the bottom surfaces of the pair of main body portions 6 and 6 in the recess 108 a. Since the width of the rail portion 108A is shorter than the length of the main barrel portion 6 in the y direction, the metal terminal 9 and the metal terminal 10 provided on the sub barrel portion 7 and the sub barrel portion 8 contact the rail portion 108A. There is no contact. Further, as shown in FIG. 6, the width of the convex portion 108B is also the same as that of the rail portion 108A, so that the metal terminal 9 and the metal terminal 10 are in contact with the convex portion 108B. Absent. Further, in the coil component 1, the metal terminal 9 and the metal terminal 10 are not provided on the side surfaces that are parallel to the zx plane of the auxiliary body portion 7 and the auxiliary body portion 8. The portion 7 and the sub trunk portion 8 abut against the inner wall of the groove 108 serving as the inner wall of the recess 108a. Therefore, when the coil component 1 is accommodated in the recess 108a, the position of the coil component 1 in the recess 108a is defined by the contact / separation relationship between the core 2, the rail portion 108A, the protrusion 108B, and the inner wall of the groove 108. be able to.

  In addition, for the coil component 1 disposed at both ends of the groove 108, only one main body portion 6 is in contact with the convex portion 108B, and the other main body portion 6 is in contact with the end wall surface of the groove 108. become. However, the end wall surface of the groove 108 is configured to be in contact with the coil component 1 in the same manner as the convex portion 108B. Therefore, the positions of the coil components 1 arranged at both ends of the groove 108 are defined in the recesses 108a defined at both ends of the groove 108, similarly to the coil components 1 sandwiched between the protrusions 108B. .

  As shown in FIG. 5, fixing holes 107a for fixing the storage pallet 107 on the XY table 105A with pins (not shown) are formed at the four corners of the storage pallet 107, respectively. A pair of fixing holes 107b for fixing a positioning mask 109, which will be described later, with pins (not shown) are formed on two sides parallel to the extending direction of the groove 108 of the storage pallet 107. In addition, an irradiation mask 111 (FIG. 11), which will be described later, is fixed to one side of two sides parallel to the extending direction of the groove 108 of the storage pallet 107 with a pin 105B (FIG. 14) protruding from the XY table 105A. A pair of holes 107c are formed.

  A substantially square positioning mask 109 shown in FIG. 9 is arranged on the surface of the storage pallet 107 where the groove 108 is formed. In the positioning mask 109, a plurality of openings 110 corresponding to the respective recesses 108 a are formed at equal intervals in a state where the positioning mask 109 is overlaid on the storage pallet 107. As shown in FIG. 10, the opening 110 is defined in a substantially rectangular shape by a short side 110 </ b> A that is a pair of short sides and a long side 110 </ b> B that is a pair of long sides. Cutouts 110a are respectively formed at the four corners of a substantially rectangular shape that is a connecting portion with the long side 110B.

  A pair of fixing holes 109a for inserting pins (not shown) for fixing the position of the positioning mask 109 with respect to the storage pallet 107 are formed in two sides parallel to the long side 110B of the positioning mask 109 (FIG. 9). A pair of holes 109b through which pins 105B (FIG. 14) for fixing the irradiation mask 111 described later are inserted are formed on one of the two sides parallel to the long side 110B of the positioning mask 109.

  Above the positioning mask 109, a substantially square irradiation mask 111 shown in FIG. In the irradiation mask 111, the leg portions 9A and 9A and the leg portions 10A and 10A of the pair of metal terminals 9 and 9 and the pair of metal terminals 10 and 10 in a state where the irradiation mask 111 is superimposed on the storage pallet 107 and the positioning mask 109. Irradiation ports 112 corresponding to are formed at equal intervals. The irradiation port 112 is a substantially rectangular opening, and is formed such that the longitudinal direction of the irradiation port 112 is the x-axis direction of the coil component 1 and the short direction of the irradiation port 112 is the y-axis direction of the coil component 1. . The region of the pulse laser irradiated to the coil component 1 by the irradiation port 112 is defined. Since the irradiation mask 111 is directly irradiated with a pulse laser, the material is made of a metal having a high laser reflectance, such as phosphor bronze. A pair of fitting holes 111a, 111a at positions corresponding to the pair of fixing holes 107c, 107c of the storage pallet 1107 in a state where the irradiation port 112 of the irradiation mask 111 is disposed at a position facing the leg portion 9A and the leg portion 10A. Is formed and can be fitted to the pin 105B (FIG. 14).

  As shown in FIG. 4, the suction nozzle 106 is provided in the vicinity of the locus of the pulse laser and in the vicinity of the upper surface of the storage pallet 107. The suction nozzle 106 can suck and remove the peeled insulating coating 3B (FIG. 3).

  Next, steps from the step of peeling the wound conductive wire to the completion of the coil component will be described. After the metal terminal 9 and the metal terminal 10 are attached to the core 2, the core 2 is moved to a winding machine (not shown). As shown in FIG. It is wound (winding step). One end of the two insulated conductors 3 wound around the core portion 5 is disposed on the leg portion 9A of the metal terminal 9 provided on the one flange portion 4, and the other end is on the other flange portion 4. It is arranged on the leg portion 10A of the metal terminal 10 provided on the wire terminal, and is cut to a predetermined length that can be connected (cutting step), thereby defining the connecting portion 3C (FIG. 3).

  The coil component 1 that has undergone the cutting process is peeled off at the connecting portion 3C (coating peeling process). Hereinafter, the coating stripping step is performed at the connection point 3C applied to the metal terminal 9 and the connection point 3C applied to the metal terminal 10, but unless otherwise specified, the connection point applied to the metal terminal 9 as a representative example. 3C will be described. First, as shown in FIG. 3, the connecting portion 3 </ b> C is wired on the leg portion 9 </ b> A on the segment 9 </ b> D side so as to be substantially parallel to the x-axis (arrangement step). Next, as shown in FIG. 13, the fixing portion 9F is bent toward the surface of the leg portion 9A, and the connecting portion 3C is held between the fixing portion 9F and the leg portion 9A (fixing step).

  The coil component 1 is stored in the recess 108a of the storage pallet 107 disposed on the XY table 105A in a state where the position of the connecting portion 3C is defined on the leg 9A (FIG. 5) (storage) Process).

  The positioning mask 109 is placed on the storage pallet 107 with the coil component 1 stored in the recess 108a. At this time, each coil component 1 is inserted through each opening 110 and the coil component 1 protrudes from the surface of the positioning mask 109 (FIG. 14). In this state, as shown in FIG. 10, the positioning mask 109 is moved with respect to the storage pallet 107 to one side in the x-axis direction and one side in the y-axis direction of the coil component 1 and stored by a pin and a fixing hole 109a (not shown). The position of the positioning mask 109 with respect to the pallet 107 is fixed. As a result, the short side 110A of the opening 110 abuts against the one main body 6 to urge the coil component 1 in the x-axis direction, and the long side 110B abuts against the one sub body 7 and the sub body 8. The coil component 1 is biased in the y-axis direction. At this time, since the notch 110a is formed in the connecting portion between the short side 110A and the long side 110B, only the short side 110A comes into contact with the main body part 6, and the sub body part 7 and the sub body part 8 are in contact with each other. Only the long side 110B comes into contact.

  Therefore, the other main body portion 6 of the coil component 1 and the other sub body portion 7 and the sub body portion 8 are in contact with the wall surface of the convex portion 108B and the inner wall of the groove 108, which are the inner walls of the concave portion 108a, respectively. 1, that is, the position of the coil component 1 on the storage pallet 107 is accurately defined (coil component positioning step).

Since the storage pallet 107 is set on the XY table 105A so that the position of the coil component 1 is determined in advance so that the focal point is about 80 μm from the surface of the leg 9A, the connecting point 3C Is focused on the interface between the core wire 3A and the insulation coating 3B (focal position adjustment step).
Since the coil component 1 is fixed to the laser peeling machine in advance, the connecting portion 3C and the optical system 103B are fixed by fixing the connecting portion 3C to the coil component 1 and fixing the coil component 1 to the storage pallet 107. It is possible to keep a certain distance without changing the position. Therefore, the pulsed laser is irradiated to the connecting portion 3C in a suitable focus state.

  Next, as shown in FIGS. 12 and 14, the irradiation mask 111 is disposed above the positioning mask 109. In the irradiation mask 111, the fitting hole 111a is engaged with the pin 105B (FIG. 14), so that the long side direction of the irradiation port 112 is connected in a state where the coil component 1 is defined at a predetermined position of the storage pallet 107. The connecting portion 3C is arranged so as to be in the wiring direction of the line portion 3C and to be approximately at the center of the irradiation port 112 in the width direction. As a result, an irradiation range of the coil component 1 of the pulse laser is defined, and a portion where it is not preferable to irradiate the pulse laser, for example, the core 5 or the like, is prevented from being irradiated.

  By fitting the irradiation mask 111 to the pin 105B through the fitting hole 111a, as shown in FIG. 14, the irradiation mask 111 is disposed at a position having a certain distance from the coil component 1. Since the pulse laser is convergent light whose focal point is located near the surface of the leg 9A by the optical system 103B, if the distance between the irradiation mask 111 and the coil component 1 is too close or too far, the irradiation range becomes wide or narrow. It becomes. However, the fitting between the pin 105B and the irradiation mask 111 maintains the distance between the storage pallet 107 and the irradiation mask 111 accurately, and as a result, the coil component 1 whose position is accurately defined on the storage pallet 107 Since the distance from the irradiation mask 111 is also accurately maintained, the irradiation range is always constant.

  After arranging the irradiation mask 111 at a predetermined position, as shown in FIG. 15A, the pulse laser is irradiated to the connecting portion 3C by the pulse laser irradiation device. The pulse laser irradiation time is 40 nsec or less for one connection point 3C, which is performed only once.

  In this case, since the pulse laser passes through the insulating coating 3B and is irradiated onto the surface of the core wire 3A, the surface of the core wire 3A absorbs the energy of the pulse laser, and the interface 3a between the insulating coating 3B and the core wire 3A rapidly The temperature rises. Since this temperature rise (temperature change from normal temperature to 1000 ° C. or more) occurs in a very short time, the polyamideimide constituting the insulating coating 3B of the interface 3a changes chemically and gasifies without melting. Therefore, as shown in FIG. 15B, innumerable bubbles 3b are generated at the interface 3a.

  As shown in FIG. 15 (c), the bubble 3b suddenly expands in volume along the interface 3a due to the temperature rise at the location irradiated with the pulse laser, and the insulating coating 3B is continuously peeled from the surface of the core wire 3A. .

  As the volume expansion of the bubble 3b proceeds, the insulating coating 3B cannot withstand the stress associated with the volume expansion, and the portion covering the bubble 3b of the insulating coating 3B is ruptured as shown in FIG. Since the process from generation to expansion to rupture of the bubble 3b is performed in an extremely short time, the rupture of the portion covering the bubble 3b of the insulating coating 3B is accompanied by an impact. Therefore, the insulating coating 3B is scattered from the surface of the core wire 3A in a fragmented state. The insulating coating 3 </ b> B scattered at this time is sucked out by the suction nozzle 106. Therefore, it is suppressed that the insulation coating 3B scattered on the coil component 1 remains, and it is difficult for a poor connection to occur in the subsequent connecting step. And as shown in FIG.15 (e), all the insulation coatings 3B of the connection location 3C are scattered, the core wire 3A surface is exposed, and peeling by a pulse laser is completed.

  After the above coating peeling process is complete | finished, the coil components 1 are transferred to the laser welding machine which is not shown in figure, and the connection location 3C is connected (connection process). In the connecting step, as shown in FIG. 17, the melting portion 9E is first bent, and the core wire 3A of the connecting portion 3C is held between the melting portion 9E and the leg portion 9A. Thereafter, the welding portion 9E is irradiated with welding laser light, and as shown in FIG. 18, the melting portion 9E, the core wire 3A and the leg portion 9A of the connecting portion 3C are integrally welded, and the connecting step is completed.

  The above coating peeling process and connecting process are performed in the same manner in the leg portion 10A. Then, the coating peeling process and the connecting process related to these leg portions 9A and 10A are performed in both the flange portions 4 and 4, and the coil component 1 is completed.

  The insulated conductor coating peeling method and the coil component manufacturing method according to the present invention are not limited to the above-described embodiments, and various modifications and improvements can be made within the scope described in the claims. For example, in the present embodiment, one pulse laser irradiation is performed from only one direction. However, the present invention is not limited to this, and may be performed a plurality of times from different directions. In the case of a coated conductor, it is possible to perform peeling more suitably by irradiating a pulse laser from both one and the opposite direction. Although the pulse laser irradiation time is 40 nsec, the present invention is not limited to this, and if it is within 100 nsec, the coating can be stripped by the above-described coating stripping step. Further, the coating material is not limited to polyamideimide, and other materials such as polyurethane can be peeled off by a pulse laser.

The top view of the coil components which concern on embodiment of this invention. The perspective view which shows the relationship between the core of the coil components which concern on embodiment of this invention, and a metal terminal. The fragmentary perspective view which shows a focus position adjustment process and the arrangement | positioning process at the coating | coated peeling process which concerns on embodiment of this invention. The side view which shows the laser peeling machine which concerns on embodiment of this invention. The top view which shows the storage pallet which concerns on embodiment of this invention. The fragmentary top view which shows the principal part of the storage pallet which concerns on embodiment of this invention. Sectional drawing in the VII-VII line of FIG. Sectional drawing in the VIII-VIII line of FIG. The top view which shows the positioning mask which concerns on embodiment of this invention. The fragmentary top view which shows the principal part of the positioning mask which concerns on embodiment of this invention. The top view which shows the irradiation mask which concerns on embodiment of this invention. The fragmentary top view which shows the principal part of the irradiation mask which concerns on embodiment of this invention. The fragmentary perspective view which shows the state which fixed the connection location at the connection process which concerns on embodiment of this invention. Sectional drawing which shows the structure on the work base which concerns on embodiment of this invention. The partial sectional view showing the state of (a) pulse laser irradiation, (b) bubble generation, (c) bubble expansion, (d) bubble rupture, and (e) peeling completion in the coating peeling step according to the embodiment of the present invention. The partial perspective view which shows the state which the coating peeling process which concerns on embodiment of this invention was complete | finished. The fragmentary perspective view which shows the state which pinched the connection location at the connection process which concerns on embodiment of this invention. The fragmentary perspective view which shows the state which the connection process which concerns on embodiment of this invention was complete | finished.

Explanation of symbols

1. Coil parts 2. Core 3. Insulated lead wire 3A ... Core wire 3B ... Insulation coating 3C ... Connection point 3a ... Interfacing 3b ... Bubbles ...... Rift part 5 ... Core part 6 ...・ Main trunk part 7 ・ ・ Sub trunk part 8 ・ ・ Sub trunk part 9 ・ ・ Metal terminal 9A ・ ・ Leg part 9B ・ ・ Base part 9C ・ ・ Leg part 9D ・ ・ Section 9F ・ ・ Fixing part 9E ・ ・ Melting part 10 ..Metal terminal 10A..Leg 10B..Base 10C..Leg 10D..Section 10F..Fixing part 10E..Melting part 101..Laser stripper 102..Frame 103..Laser irradiation apparatus 103A. -Mirror 103B-Optical system 104-Controller 105-Work base 105A-XY table 105B-Pin 106-Suction nozzle 107-Storage pallet 107a-Fixing hole 107b-Fixing hole 107c- Fixed hole 1 8. Groove 108A ... Rail 108B ... Convex 108a ... Concave 109 ... Positioning mask 109a ... Fixed hole 109b ... Hole 110 ... Opening 110A ... Short side 110B ... Long side 111 ... Irradiation Mask 111a ·· Fitting hole 112 ·· Irradiation port

Claims (9)

Insulation having a core composed of a core portion and a pair of flange portions provided at both ends of the core portion, electrodes provided on the pair of flange portions, and a core wire and an insulating coating covering the core wire A method of manufacturing a coil component comprising a conductive wire,
A winding step of winding the insulated conductor around the winding core;
Before and after the winding step, a cutting step of cutting the insulated conductor to a length that can be connected to the electrode;
A coating peeling step of irradiating the insulated conductor with a pulsed laser to generate bubbles at the interface between the core wire and the insulating coating, expanding the bubbles to rupture and scatter the coating;
Connecting the insulated conductive wire from which the coating has been peeled off to the electrode, and
The coating peeling step includes storing the coil component in a storage pallet in which a recess capable of storing the coil component is formed, and attaching the coil component to one side by a positioning member disposed on the storage pallet. A non-laser irradiation portion is covered with a coil component positioning step for defining the position of the coil component in the recess by causing it to abut against one side wall surface in the recess and a mask member covering the coil component and the positioning member. In addition, a mask process for defining a laser irradiated portion of the coil component by an irradiation port formed in the mask member, and arranged on the locus of the pulse laser and movable in a direction substantially orthogonal to the pulse laser irradiation direction. And a placement step of placing the storage pallet on a flat table .   The coil part manufacturing method according to claim 1, wherein a suction mechanism is provided in the vicinity of the locus of the pulse laser and in the vicinity of the coil part, and the coating scattered in the coating peeling step is sucked by the suction mechanism. Method.   3. The covering film peeling step includes a focal position adjusting step for adjusting a focus of the pulse laser to a position where the pulse laser is irradiated on the surface of the core wire. Manufacturing method of coil parts.   2. The coating stripping step includes a fixing step of fixing the stripped position of the insulated conducting wire so as to maintain a certain distance with respect to an irradiation apparatus irradiated with the pulse laser. 4. A method for manufacturing a coil component according to any one of 3 above. The method of manufacturing a coil component according to any one of claims 1 to 4, wherein the pulse laser has a wavelength that allows the pulse laser to pass through the insulating coating. 6. The method for manufacturing a coil component according to claim 1, wherein the irradiation time of the pulse laser is 100 nsec or less. 7. The coating peeling process is performed according to any one of claims 1 to 6, wherein the pulse laser irradiation is performed a plurality of times while changing the irradiation direction in the circumferential direction of the peeling position. Manufacturing method of coil parts. The method of manufacturing a coil component according to any one of claims 1 to 7, wherein the irradiation with the pulse laser is performed only once on an arbitrary peeling position of the insulated conductor. A coil component manufacturing apparatus that peels off the coating of a coated conductor wound around a coil component,
A work base carrying the coil component;
A laser irradiation device for irradiating a laser;
An optical device for changing the irradiation direction of the laser to a direction toward the work base and converging the laser so that a focal position comes on the work base;
A suction mechanism provided near the locus of the laser and near the work base,
The work base is disposed on the storage pallet, a table movable on a direction orthogonal to the laser irradiation direction, a storage pallet formed on the table and formed with a recess capable of storing the coil components. And a positioning member that urges the coil component to one side orthogonal to the laser irradiation direction to abut against one side wall surface in the recess to define the position of the coil component in the recess, and the coil component And a mask member that covers the positioning member and has an opening formed at a portion corresponding to the peeled position of the coated conductor.

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