JP6268558B2 - Method for manufacturing wire-wound coil component - Google Patents

Description

  The present invention relates to a method for manufacturing a coil component, and more specifically, a core member including a columnar core portion and a pair of flange portions provided at both ends of the core portion, and one side flange of the pair of flange portions. The present invention relates to a method of manufacturing a coiled coil component comprising a pair of external electrodes formed on a part and the other side collar part, and a winding wound around a core part.

  For example, Patent Document 1 proposes a method of manufacturing a wire-wound coil component as shown in FIG.

  The winding-type coil component 100 of FIG. 15 whose manufacturing method is proposed in Patent Document 1 includes a columnar core portion 102 and a pair of flange portions 103 (one side flange portion 103a, provided on both ends of the core portion 102). Core member 101 provided with the other side flange 103b), a pair of external electrodes 104a, 104b formed on the pair of flanges 103 (one side flange 103a, the other side flange 103b), and the core portion The external electrodes 104a and 104b are mounted on one side flange 103a and the other side flange 103b on which the wound coil component 100 is mounted (for example, a circuit board or the like). ).

  In addition, the external electrodes 104a and 104b face the one side flange 103a and the other side flange 103b so as not to cause problems such as deterioration of characteristics such as a magnetic field and solder wrapping around the coil (winding 105). No electrode is formed on the surface (inner wall surface), and the formation height of the external electrodes 104a and 104b is from the facing surface side of the one side flange 103a and the other side flange 103b toward the end surface (outer wall surface). It is formed to be higher.

  FIG. 16 shows a method for forming the above-described external electrode (hereinafter also referred to as “inclined external electrode”) in manufacturing a wire-wound coil component as shown in FIG. As described above, by immersing the core member (ferrite core) 101 in the bathtub 109 in which the conductive paste 108 for forming the external electrode is stored, the pair of flange portions 103 (one side flange portion 103a, the other side flange portion 103b) A method of forming an inclined external electrode through a step of applying a conductive paste and a step of baking the conductive paste is shown.

  Further, in Patent Document 2, as shown in FIG. 17, a conducting wire 212 is wound around a core portion 211 c of the core member 211, and a pair of leg portions is formed on the leg portions 211 a and 221 b on both ends of the core member 211. A wound-type coil component 200 is described in which the formation height of the external electrodes 213a and 213b increases from the opposing surface side of 211a and 211b toward the end surface side (outer wall surface). Then, as a method of manufacturing the wire-wound coil component 200 formed so that the external electrodes are inclined, as shown in FIG. 18, a method of forming the external electrodes 213a and 213b simultaneously on a pair of legs 211a and 211b is proposed. Has been.

That is, in Patent Document 2, in order to apply the conductive paste for forming the external electrodes 213a and 213b simultaneously on the pair of legs 211a and 211b, first, the legs of the core member 211 are placed on the flat jig 230. Place with 211a and 211b facing up. On the other hand, a plate 231 having a V-shaped recess 231a is prepared, and a conductive paste 232 for forming external electrodes is applied thereto.
Then, by pressing the paste 232 applied to the plate 231 against the core member 211 so that the concave portion 231a of the plate 231 coincides with the core member 211, the conductive paste is simultaneously applied to the pair of leg portions 211a and 211b, The external electrodes 213a and 213b are formed on the legs 211a and 211b through the firing step.

  However, in the case of the method of Patent Document 1 described above, it is necessary to apply the conductive paste to the other collar part by rotating (turning) the core member after applying the conductive paste to one collar part. However, in that case, after holding the core member one by one or a plurality in a row at the same time and applying the conductive paste to one of the collars, the core member is tilted (rotated) to the opposite side. In addition, since it is necessary to immerse the other collar in the conductive paste, there is a problem in that the number of core members that can be processed at a time is reduced, resulting in an increase in cost.

  In the case of the method disclosed in Patent Document 2, the conductive paste 232 is applied to the pair of legs 211a and 211b at the same time. However, the moldability of the electrode material, the processing accuracy of the jigs, and the positioning of the core member Due to problems such as accuracy, there is a problem that the coating accuracy is lower and the shape accuracy of the external electrode is lower than when applying the conductive paste to each of the pair of leg portions 211a and 211b.

Japanese Patent No. 3771308 Japanese Patent Application Laid-Open No. 10-135048

  The present invention solves the above-mentioned problem, and the height dimension gradually increases from the mutually facing surface side of the one side collar portion and the other side collar portion constituting the core member toward the opposite surface. Winding-type coil parts with externally inclined external electrodes (inclined external electrodes), which can efficiently manufacture highly reliable and highly reliable wound-type coil parts with inclined external electrodes with high shape accuracy The purpose is to.

In order to solve the above-mentioned problem, the manufacturing method of the (first) wire-wound coil component of the present invention includes:
A core member having a columnar core part and a pair of flanges provided at both ends of the core part, and a pair of one side collar part and the other side collar part formed in the pair of collar parts A winding-type coil component comprising an external electrode and a winding wound around the winding core, wherein the winding-type coil component is mounted on the one side collar and the other side collar In the region close to the object, the external electrode inclined such that the height dimension gradually increases from the opposite surface side of the one side collar part to the other side collar part is formed. In a method for manufacturing a wire-wound coil component having a structure,
Forming the external electrode comprises:
(A) The core member is held by the first holding jig having a holding force for holding the plurality of core members, and the core member of the first holding jig is held by the axis of the core portion. A region having a predetermined angle with respect to the holding surface, which is a main surface on the side to be formed, and the external electrode of the one side flange is to be formed by the holding of the first holding jig from the other side flange A holding step for holding in a posture protruding from the surface;
(B) The step of (a) is performed, and the region where the external electrode is to be formed on the one side flange projecting from the holding surface is brought into contact with the electrode material for forming the external electrode A first electrode applying step of applying an electrode material to a region where the external electrode of the one side collar portion is to be formed;
(C) After performing the step (b), a rotating jig for rotating the core member is brought into contact with the core member held by the first holding jig, and the rotating jig Is moved relative to the first holding jig in a direction along the main surface of the first holding jig, the core member is rotated, and the external electrode of the other side flange portion is rotated. A rotation step in which the region to be formed is in a posture facing the first holding jig;
(D) After carrying out the step (c), the core member held by the first holding jig is positioned so as to face the first holding jig. Transfer to a second holding jig having a holding force to hold, with respect to the holding surface that is the main surface of the second holding jig on the side holding the core member, the axis of the core portion The core member is placed in a posture having a predetermined angle and a region in which the external electrode of the other side flange is to be formed protrudes from the holding surface of the second holding jig from the one side flange. A transfer step of holding by a second holding jig;
(E) The step (d) is carried out to form the external electrode in a region where the external electrode of the other side flange projecting from the holding surface of the second holding jig is to be formed. A second electrode applying step of applying an electrode material to a region where the external electrode of the other side collar should be formed by touching the electrode material.

In addition, another (second) winding type coil component manufacturing method of the present invention includes:
A core member having a columnar core part and a pair of flanges provided at both ends of the core part, and a pair of one side collar part and the other side collar part formed in the pair of collar parts A winding-type coil component comprising an external electrode and a winding wound around the winding core, wherein the winding-type coil component is mounted on the one side collar and the other side collar In the region close to the object, the external electrode inclined such that the height dimension gradually increases from the opposite surface side of the one side collar part to the other side collar part is formed. In a method for manufacturing a wire-wound coil component having a structure,
Forming the external electrode comprises:
(A) The core member is held by the first holding jig having a holding force for holding the plurality of core members, and the core member of the first holding jig is held by the axis of the core portion. A region having a predetermined angle with respect to the holding surface, which is a main surface on the side to be formed, and the external electrode of the one side flange is to be formed by the holding of the first holding jig from the other side flange A holding step for holding in a posture protruding from the surface;
(B) The external side of the one side collar is brought into contact with an electrode material for forming the external electrode by contacting a region where the external electrode of the one side collar protruding from the holding surface is to be formed A first electrode applying step of applying an electrode material to a region where an electrode is to be formed;
(C) After carrying out the step (b), the core member held by the first holding jig is positioned so as to face the first holding jig. Transfer to a second holding jig having a holding force to hold, the axis of the core portion has a predetermined angle with respect to a holding surface which is a main surface on the side holding the core member, A transfer step of holding the core member by the second holding jig in a posture in which the region to which the electrode material of the side flange portion is applied faces the second holding jig;
(D) A rotating jig for causing the core member held by the second holding jig to rotate the core member about the axis of the core after performing the step (c). And rotating the core member by moving the rotating jig in a direction along the main surface of the second holding jig relative to the second holding jig, A rotation step in which a region where the external electrode of the other side flange should be formed protrudes from the holding surface of the second holding jig from the one side flange;
(E) The step (d) is carried out to form the external electrode in a region where the external electrode of the other side flange projecting from the holding surface of the second holding jig is to be formed. A second electrode applying step of applying an electrode material to a region where the external electrode of the other side collar should be formed by touching the electrode material.

Further, another (third) winding type coil component manufacturing method of the present invention includes:
A core member having a columnar core part and a pair of flanges provided at both ends of the core part, and a pair of one side collar part and the other side collar part formed in the pair of collar parts A winding-type coil component comprising an external electrode and a winding wound around the winding core, wherein the winding-type coil component is mounted on the one side collar and the other side collar In the region close to the object, the external electrode inclined such that the height dimension gradually increases from the opposite surface side of the one side collar part to the other side collar part is formed. In a method for manufacturing a wire-wound coil component having a structure,
Forming the external electrode comprises:
(A) The core member is held by the first holding jig having a holding force for holding the plurality of core members, and the core member of the first holding jig is held by the axis of the core portion. A region having a predetermined angle with respect to the holding surface, which is a main surface on the side to be formed, and the external electrode of the one side flange is to be formed by the holding of the first holding jig from the other side flange A holding step for holding in a posture protruding from the surface;
(B) The step of (a) is performed, and the region where the external electrode is to be formed on the one side flange projecting from the holding surface is brought into contact with the electrode material for forming the external electrode A first electrode applying step of applying an electrode material to a region where the external electrode of the one side collar portion is to be formed;
(C) After carrying out the step (b), the core member held by the first holding jig is positioned so as to face the first holding jig. The second holding jig is pressed against a second holding jig having a holding force to hold the second holding jig relative to the first holding jig on the main surface of the first holding jig. The core member is rotated, the axis of the core portion has a predetermined angle with respect to the holding surface of the second holding jig, and the outside of the other side flange portion A rotation step in which a region where an electrode is to be formed protrudes from the holding surface of the second holding jig from the one side flange;
(D) After carrying out the step (c), the first holding jig is separated, and the axis of the winding core portion is at a predetermined angle with respect to the holding surface of the second holding jig. And the core member is held by the second holding jig in a state where the region on the other side flange where the external electrode is to be formed protrudes from the holding surface of the second holding jig. A transfer and holding step to be
(E) The step (d) is carried out to form the external electrode in a region where the external electrode of the other side flange projecting from the holding surface of the second holding jig is to be formed. A second electrode applying step of applying an electrode material to a region where the external electrode of the other side collar should be formed by touching the electrode material.

  Further, in the method for manufacturing a wound coil component according to the present invention, the rotating jig has a friction resistance capable of rotating the core member on the surface of a rigid body material in the rotating step, and elasticity. It is preferable to have a structure in which a coating layer made of the provided material is provided.

  By providing the above configuration, the core member can be reliably rotated and held in the intended posture, and the present invention can be effectively achieved.

  Moreover, in the manufacturing method of the coil type coil component of this invention, it is preferable to rotate the said core member 180 degree | times around the axial center of the said core part in the said rotation process.

  Further, in the method of manufacturing a wound coil component according to the present invention, in the rotating step, the axial center direction of the core part of the core member is X, and the first holding jig holding the core member or When the direction perpendicular to the holding surface of the second holding jig is Y, the axis of the winding core portion rotates on the surface defined by X and Y, and the holding It is also possible to rotate the core member so that the angle with the surface changes.

  In the method for manufacturing a wire-wound coil component of the present invention, it is preferable that the holding force of the second holding jig is larger than the holding force of the first holding jig.

  By providing the above-described configuration, the core member can be transferred from the first holding jig to the second holding jig without requiring a complicated configuration, and the present invention can be more effectively realized. Can do.

  In the method for manufacturing a wire-wound coil component of the present invention, it is preferable that the first holding jig and the second holding jig hold the core member with an adhesive force.

  By providing the above configuration, the first and second holding jigs that can reliably hold the core member without requiring a complicated configuration are used to manufacture the wound coil component of the present invention. The method can be carried out more reliably and the wire-wound coil component can be manufactured efficiently.

  In the present invention, it is desirable that the first and second holding jigs hold the core member by adhesive force, but in some cases, it is possible to use a member that holds the core member by magnetic force. It is.

  Moreover, in the manufacturing method of the winding type coil components of this invention, the axial center of the said core part is the said core member with respect to the said holding surface of the said 1st holding jig and the said 2nd holding jig. The holding surface for holding the core member of the first holding jig and the second holding jig is inclined or inclined so that it can be held in a state having a predetermined angle. It is preferable to have a groove.

  By providing the above configuration, the core member can be reliably held in a state where the axis of the core portion has a predetermined angle with respect to the holding surfaces of the first and second holding jigs. Thus, the present invention can be made more effective.

In the (first) winding type coil component manufacturing method of the present invention, the axis of the winding core part has a predetermined angle with respect to the holding surface of the first holding jig, and the one side flange part has The electrode material is applied to the region where the external electrode of the one side collar portion of the core member held on the holding surface of the first holding jig is projected so that the region where the external electrode is to be formed protrudes from the holding surface. Then, after the core member is rotated using the rotating jig, the core member is held (transferred) by the second holding jig. When held by the above, it is possible to make the region where the external electrode of the other side flange should be formed protrude from the holding surface of the second holding jig from the one side flange. That is, by rotating using a rotating jig, an external electrode on the other side flange that cannot be protruded from the holding surface of the holding jig should be formed so that the electrode material can be applied as it is. The region can be easily protruded.
Then, in this state, by applying an electrode material to the region where the external electrode of the other side collar should be formed, the one side collar and the other side collar are placed at predetermined positions on the one side collar and the other side collar. It is possible to reliably form an external electrode (hereinafter also referred to as an “inclined external electrode”) that is inclined so that the height dimension gradually increases from the mutually facing surface side to the opposite surface. .

  Moreover, in the manufacturing method of the (1st) winding type coil component of this invention, since the core member is rotated by the above-mentioned method, the several core member hold | maintained on the 1st holding jig Can be simultaneously rotated, so that a large amount of core members can be processed in a short time. As a result, it is possible to efficiently manufacture a wire-wound coil component having an external electrode with high shape accuracy and good characteristics and high reliability.

  In the (second) winding type coil component manufacturing method of the present invention, the electrode material is applied to the region where the external electrode of the one side collar portion of the core member held by the first holding jig is to be formed. After that, before the core member is rotated, it is transferred to the second holding jig, and the transferred core member is rotated on the second holding jig using the rotating jig. After completion of the process, the core member is held by the second holding jig, and the axis of the core has a predetermined angle with respect to the holding surface of the second holding jig, The region where the external electrode is to be formed can be made to protrude from the holding surface of the second holding jig from the one side flange.

  Therefore, in this state, by applying an electrode material to the region where the external electrode of the other side collar should be formed, the one side collar and the other side collar are placed at predetermined positions on the one side collar and the other side collar. It is possible to reliably form an inclined external electrode that is inclined so that the height dimension gradually increases from the mutually facing surface side to the opposite surface.

  In the (second) winding type coil component manufacturing method of the present invention, since the core member is rotated after being transferred to the second holding jig, the one side flange portion Since the region to which the electrode material is applied is located at a position facing the second holding jig at the time of transfer to the second holding jig, the rotation jig is not pressed against the area. Even when the applied electrode material has a low strength, it is possible to suppress damage and to reliably manufacture a wound coil component with high shape accuracy. Also, the portion of the second holding jig that contacts the core member is usually made of a material that is softer and more deformable than the portion of the rotating jig that contacts the core member. The risk of damage to the electrode material is reduced.

  In addition, according to the (second) winding type coil component manufacturing method of the present invention, the same effects as in the case of the (first) winding type coil component manufacturing method of the present invention can be obtained in other respects. it can.

  In the (third) winding type coil component manufacturing method of the present invention, an electrode material is applied to the region where the external electrode of the one side collar portion of the core member held by the first holding jig is to be formed. Thereafter, the core member held by the first holding jig is pressed against the second holding jig positioned so as to face the first holding jig, and the second holding jig is moved to the first holding jig. Since the core member is rotated by moving in the direction along the main surface of the first holding jig relative to the holding jig, the core part can be rotated without using the rotating jig. The axial center has a predetermined angle with respect to the holding surface of the second holding jig, and the region where the external electrode of the other side flange should be formed protrudes from the holding surface of the second holding jig. Is possible.

  Therefore, in this state, by applying an electrode material to the region where the external electrode of the other side collar should be formed, the one side collar and the other side collar are placed at predetermined positions on the one side collar and the other side collar. It is possible to reliably form an inclined external electrode that is inclined so that the height dimension gradually increases from the mutually facing surface side to the opposite surface.

  Further, in the (third) winding type coil component manufacturing method of the present invention, since no rotating jig is required, it is possible to reduce the cost of manufacturing equipment and simplify the manufacturing process. .

  In addition, according to the (third) winding type coil component manufacturing method of the present invention, the same effects as those of the (first) winding type coil component manufacturing method of the present invention can be obtained in other respects. it can.

It is a figure which shows an example of the winding type coil components manufactured by the method of this invention, (a) is a front view, (b) is a side view. It is a figure explaining the manufacturing method of the winding type coil components concerning Embodiment 1 of this invention, and is a figure which shows the state which made the 1st holding jig hold | maintain a core member. It is a figure which shows the state which provided the electrode material to the area | region which should form the external electrode of the one side collar part of a core member in the manufacturing process of the winding type coil components concerning Embodiment 1 of this invention. (A)-(c) is a process of the manufacturing method of the winding type coil component concerning Embodiment 1 of this invention. WHEREIN: The core member hold | maintained at the 1st holding jig is made to the surroundings of the axial center of a core part. It is a figure explaining the method to rotate. (A)-(e) is a figure which shows the process in which a core member is rotated around the axial center of a core part in 1 process of the manufacturing method of the winding type coil components concerning Embodiment 1 of this invention. (A)-(c) demonstrates the method of transferring the core member after rotating to the 2nd holding jig in 1 process of the manufacturing method of the winding type coil components concerning Embodiment 1 of this invention. It is a figure to do. It is a figure which shows the state which provided the electrode material to the area | region which should form the external electrode of the other side collar part of a core member at 1 process of the manufacturing method of the winding type coil components concerning Embodiment 1 of this invention. (A)-(c) are the cores after providing an electrode material to the area | region which should form the external electrode of one side collar part in 1 process of the manufacturing method of the winding type coil components concerning Embodiment 2 of this invention It is a figure explaining the method to transfer a member to the 2nd holding jig. (A)-(c) is a process of the manufacturing method of the winding type coil components concerning Embodiment 2 of this invention. WHEREIN: The core member hold | maintained at the 2nd holding jig is made to the surroundings of the axial center of a core part. It is a figure explaining the method to rotate. (A) is one process of the manufacturing method of the winding type coil components concerning Embodiment 3 of this invention. After inverting a 1st holding jig, it is 2nd so that it may face with a 1st holding jig. The figure which shows the state which located the holding jig of FIG. 2, (b) is a figure which shows the state which made the 2nd holding jig contact | abut to the core member hold | maintained at the 1st holding jig. (A) is a figure explaining the method to rotate a core member around the axial center of a core part in the state shown to (b) of FIG. 10A, (b) is the core member after rotating. It is a figure which shows the state which transferred to the 2nd holding jig. It is a figure explaining the method of rotating a winding type coil component in 1 process of the manufacturing method of the winding type coil component concerning Embodiment 4 of this invention, Comprising: It is a figure which shows the state before rotating. It is a figure explaining the method of rotating a winding type coil component in 1 process of the manufacturing method of the winding type coil component concerning Embodiment 4 of this invention, Comprising: It is a figure which shows the state after rotating. It is a figure explaining the method to transfer the wound winding type coil components to the 2nd holding jig in 1 process of the manufacturing method of the winding type coil components concerning Embodiment 4 of this invention. It is a figure which shows the state which provided the electrode material to the area | region which should form the external electrode of the other side collar part of a core member in 1 process of the manufacturing method of the winding type coil components concerning Embodiment 4 of this invention. These are figures which show the winding type coil components manufactured by the manufacturing method of the conventional winding type coil components. It is a figure which shows the manufacturing method of the winding type | mold coil component of FIG. It is a figure which shows the other conventional winding type coil components. It is a figure which shows the manufacturing method of the winding type | mold coil component of FIG.

  Embodiments of the present invention will be described below to describe the features of the present invention in more detail.

[Embodiment 1]
In the first embodiment, a method for manufacturing a wire-wound coil component (wire-wound inductor) having the structure shown in FIG. 1 will be described with emphasis on the step of forming an external electrode on a core member.

  In addition, the winding type coil component 10 manufactured in this Embodiment 1 includes a core portion 2 and a pair of flange portions (one side flange portion 3a and the other side flange portion 3b) connected to both ends of the core portion 2. And a pair of external electrodes (external electrodes 4a and 4b) disposed on one side flange 3a and the other side flange 3b of the core member 1 and the core 2 Winding 5 is provided. Both ends of the winding 5 are connected to the external electrodes 4a and 4b by solder or the like.

  The external electrodes 4a and 4b are opposed to the one side flange 3a and the other side flange 3b so as not to cause problems such as deterioration of characteristics such as a magnetic field and solder wrapping around the coil (winding 5). No electrode is formed on the surface (inner wall surface), and the formation height of the external electrodes 4a and 4b is from the opposite surface side of the one side flange 3a and the other side flange 3b toward the end surface (outer wall surface). That is, the upper side of the external electrode on the side surfaces of the one side flange 3a and the other side flange 3b is inclined. Here, an example in which no electrode is formed on the inner wall surface is shown, but the electrode structure is not limited to this, and if the formation height of the external electrodes 4a and 4b on the inner wall surface is lower than the outer wall surface, Alternatively, an electrode may be formed.

  In this embodiment, as the core member 1, a so-called H-type member having flanges 3 (3 a, 3 b) provided on both ends of the core part 2 is used, but a so-called U-shaped member as shown in FIG. 17 is used. For example, an I-type (not shown) that does not include a collar portion can be used.

Moreover, as a constituent material of the core member 1, a ceramic material (for example, alumina, ferrite, etc.), a metal magnetic material, or the like can be used.
Moreover, silver, copper, etc. can be used as a material which comprises the external electrodes 4a and 4b.
The present invention can also be applied to the case of manufacturing a wire-wound coil component in which the winding 5 is protected by a protective member mainly composed of a thermosetting resin such as an epoxy resin.

Next, a method for manufacturing the wire wound coil component 10 will be described.
First, as shown in FIG. 1, a core member 1 having a core portion 2 and a pair of flange portions (one side flange portion 3a and the other side flange portion 3b) connected to both ends of the core portion 2 is prepared. To do.

Next, the external electrodes 4a and 4b are formed by the procedure described below.
(A) Then, as shown in FIG. 2, the first holding jig 11 having a holding force for holding the core member 1 with an adhesive force causes the core member 1 to have the axial center 2a of the core portion 2 first. A region R1 having a predetermined angle with respect to a holding surface (main surface on the side holding the core member 1) 11a of one holding jig 11 and where an external electrode of one side flange 3a is to be formed is the other side It holds with the attitude | position which protruded below from the holding surface 11a of the 1st holding jig 11 from the part 3b (holding process).
In the first holding jig 11 shown in FIG. 2, the holding surface (main surface) 11 a is a surface on which a line L <b> 1 connecting points at high altitudes on both ends of each groove 12 is located.

In the first embodiment, as the first holding jig 11, the core member 1 is in a state where the axis 2 a of the core portion 2 has a predetermined angle with respect to the holding surface 11 a of the first holding jig 11. The groove portion 12 having the inclined side surface 12a is formed on the main surface (holding surface) 11a. The upper surface of the one side collar part 3a and the other side collar part 3b is detachably fixed to one side surface 12a of the groove part 12. A predetermined gap is provided between the other side surface facing the one side surface 12a and the outer wall surface of the other side flange portion 3b so that the core member 1 can be rotated in a rotation process described later. Is preferred.
The first holding jig 11 is formed by bonding an adhesive silicone rubber holding member 13 having the groove 12 to a metal plate 14. As a material constituting the holding member 13, other materials such as fluoro rubber can be used.
The first holding jig 11 is configured to hold the core member 1 on the surface in a state of being arranged in a two-dimensional matrix.

(B) The step (a) is performed, the core member 1 is held by the first holding jig 11, and the outside of the one side flange 3a of the core member 1 protruded downward from the holding surface 11a. The region R1 where the electrode is to be formed is brought into contact with the conductive paste (electrode material for forming the external electrode) 15 held on the table 16, so that as shown in FIG. The conductive paste 15 is applied (applied) to the region R1 where the electrode is to be formed (first electrode applying step). Thereafter, the applied conductive paste 15 is dried.
In addition, as a conductive material constituting the conductive paste, various materials that can form an external electrode that can be bonded using solder or the like to an object such as an electrode of a circuit board on which a wound coil component is mounted are used. It is possible. Specifically, for example, a silver paste or a copper paste can be used. Further, as the electrode material, a resin containing a metal powder or the like can be used. The conductive paste is formed to have a uniform thickness on the table by moving the squeegee while maintaining a predetermined interval with respect to the horizontally installed table.

  (C) Next, as shown in FIG. 4A, the first holding jig 11 is turned upside down so that the axis 2a of the core portion 2 of the core member 1 is the first. The holding jig 11 has a predetermined angle with respect to the holding surface (main surface on the side holding the core member 1) 11a, and a region to which the conductive paste 15 of the one side flange 3a of the core member 1 is applied (external It is assumed that the region (R1) where the electrode is to be formed protrudes above the holding surface (main surface) 11a of the first holding jig 11 from the other side flange 3b.

Then, a rotating jig for rotating the core member 1 around the axis 2a of the core portion 2 so as to face the holding surface (main surface) 11a of the first holding jig 11 holding the core member 1. 31 is positioned (see FIG. 4A).
Although not particularly illustrated, the rotating jig 31 has a structure in which a coating layer made of a material having frictional resistance and elasticity is provided on the surface of a metal base material. However, as a material (for example, rubber-based material) constituting the coating layer, the core member 1 is not moved (attached) from the first holding jig 11 to the rotating jig 31 side. One having a lower adhesive force than the holding jig 11 is used.

Then, as shown in FIG. 4B, the inclined portion 31 a of the rotating jig 31 is brought into contact with the core member 1. Next, the rotating jig 31 is moved in the depth direction of the paper surface of FIG. 4B (the direction along the main surface 11a of the first holding jig and the longitudinal direction of the groove portion 12). As shown in FIGS. 5A, 5B, 5C, 5D, and 5E, the core member 1 is moved relative to the holding jig 11, and the axis of the core portion 2 is moved. Rotate 180 ° around core 2a. As a result, as shown in FIG. 4C, the region (region to which the conductive paste 15 is applied) R <b> 1 where the external electrode of the one side flange 3 a is to be formed is opposed to the first holding jig 11. The region R2 where the external electrode of the other side flange 3b is to be formed is also opposed to the first holding jig 11, and the region R2 where the external electrode of the other side flange 3b is to be formed is the one side The posture is set so as to be lower than the region (region to which the conductive paste 15 is applied) R1 in which the external electrode of the portion 3a is to be formed (rotation process).
5A, 5B, 5C, 5D, and 5E, the core member 1 is rotated 45 ° from 0 ° to 180 ° around the axis 2a of the core portion 2 by 45 °. The states are shown in order.

(D) Next, after removing the rotating jig 31, the core member 1 is held by the second holding jig 21 having a holding force for holding the core member 1 as shown in FIG. The first holding jig 11 is positioned so as to face the first holding jig 11. And after pressing the 2nd holding jig 21 against the core member 1 hold | maintained at the 1st holding jig 11, as shown in FIG.6 (b), as shown in FIG.6 (c), The core member 1 is transferred to the second holding jig 21 by separating the first holding jig 11 (transfer process).
Thereby, the axis 2a of the core part 2 of the core member 1 is the holding surface of the second holding jig 21 (the horizontal surface in FIG. 6C) on the side where the core member 1 is held. The main surface 21a has a predetermined angle, and the region R2 where the external electrode of the one side flange 3b is to be formed projects downward from the holding surface 21a of the second holding jig 21 from the one side flange 3a. In this posture, the core member 1 is held by the second holding jig 21.

The second holding jig 21 is formed by bonding an adhesive silicone rubber holding member 23 to a metal plate 24 in the same manner as the first holding jig 11 described above. Then, the main surface of the core member 1 can be held so that the axis 2a of the core 2 has a predetermined angle with respect to the holding surface (main surface which is a horizontal surface) 21a. A groove portion 22 having an inclined side surface 22a is formed in the (holding surface) 21a.
In the second holding jig 21, the holding surface (main surface) 21 a is a surface on which a line L <b> 2 connecting points at high altitudes on both ends of each groove 22 is located.

  In addition, as the holding member 23 constituting the second holding jig 21, a holding member having a holding force for holding the core member 1 stronger than that of the holding member 13 constituting the first holding jig 11 is used. Therefore, the core member 1 held by the first holding jig 11 is surely transferred to the second holding jig 21 as shown in FIG.

  (E) Next, as shown in FIG. 7, a conductive paste (for forming an external electrode) in which a region R <b> 2 where the external electrode of the other side flange 3 b that protrudes downward is to be formed is held on the table 16. The electrode material (conductive paste) 15 is applied (applied and dried) to the region R2 where the external electrode of the other side flange 3b is to be formed (second electrode applying step).

  Then, as described above, after applying the conductive paste to the region R1 where the external electrode of the one side flange 3a is to be formed and the region R2 where the external electrode of the other side flange 3b is to be formed, the core member is fired Then, by baking the conductive paste, the core member 1 having a pair of external electrodes 4a and 4b having a predetermined shape on the one side flange 3a and the other side flange 3b is obtained.

  Then, the winding 5 is wound around the core portion 2 of the core member 1, and both ends of the winding 5 are connected to the external electrodes 4a and 4b by solder or the like, thereby having a structure as shown in FIG. The coil component 10 is obtained.

  As described above, according to the method for manufacturing the wire-wound coil component of the first embodiment, the one side collar and the other side collar are opposed to each other at predetermined positions on the one side collar and the other side collar. A core member including an external electrode (inclined external electrode) that is inclined so that the height dimension gradually increases from the side toward the opposite surface can be reliably formed.

  In addition, since the core member is rotated about the axis of the core portion by the above-described method, a plurality of core members held on the first holding jig can be simultaneously rotated together. It becomes possible to process a large amount of core members in a short time. As a result, it is possible to efficiently manufacture a wound coil component having good characteristics and high reliability, which includes an external electrode with high shape accuracy.

[Embodiment 2]
Next, another method for manufacturing the wire-wound coil component 10 will be described.
Similarly to the embodiment, a core member 1 having a core portion 2 and a pair of flange portions (one side flange portion 3a and the other side flange portion 3b) connected to both ends of the core portion 2 (see FIG. 1). ).

Then, the external electrodes 4a and 4b are formed by the procedure described below.
(A) As in the case of the first embodiment, as shown in FIG. 2, the core member 1 is wound around the core by the first holding jig 11 having a holding force for holding the core member 1 with an adhesive force. The axis 2a of the portion 2 has a predetermined angle with respect to the holding surface (main surface on the side holding the core member 1) 11a of the first holding jig 11, and forms an external electrode of the one side flange 3a. The power region R1 is held in a posture protruding downward from the holding surface 11a of the first holding jig 11 from the other side flange 3b (holding step).
Also in the second embodiment, the first holding jig 11 is the same as the first holding jig 11 used in the first embodiment.

  (B) The step (a) is performed, the core member 1 is held by the first holding jig 11, and the outside of the one side flange 3a of the core member 1 protruded downward from the holding surface 11a. As shown in FIG. 3, the region R1 (see FIG. 2) where the electrode is to be formed is held on the table 16 as shown in FIG. 3 (electrode material for forming the external electrode). ) 15, the conductive paste 15 is applied (applied and dried) to the region R1 where the external electrode of the one side flange 3a is to be formed (first electrode applying step).

  (C) Next, as shown in FIG. 8A, the first holding jig 11 is turned upside down so that the axis 2a of the core portion 2 of the core member 1 is the first. The holding jig 11 has a predetermined angle with respect to the holding surface (main surface on the side holding the core member 1) 11a, and a region to which the conductive paste 15 of the one side flange 3a of the core member 1 is applied (external It is assumed that the region (R1) where the electrode is to be formed protrudes above the holding surface (main surface) 11a of the first holding jig 11 from the other side flange 3b.

Next, the second holding jig 21 having a holding force for holding the core member 1 is positioned so as to face the inverted first holding jig 11 (FIG. 8A). And after pressing the 2nd holding jig 21 against the core member 1 hold | maintained at the 1st holding jig 11, as shown in FIG.8 (b), as shown in FIG.8 (c), The core member 1 is transferred to the second holding jig 21 by separating the first holding jig 11 and the second holding jig 21 (transfer process).
Also in the second embodiment, the second holding jig 21 is the same as the second holding jig 21 used in the first embodiment.

  (D) Then, after the second holding jig 21 holding the core member 1 is inverted, as shown in FIG. 9A, the holding surface (main surface) 21a of the second holding jig 21 A rotating jig 31 for rotating the core member 1 around the axis 2a of the core portion 2 is positioned so as to face each other. Then, as shown in FIG. 9B, the inclined portion 31a of the rotating jig 31 is brought into contact with the core member 1, and the depth direction of the paper surface of FIG. 9B (the main surface of the second holding jig ( Holding surface)) The rotating jig 31 or the second holding jig 21 is moved relatively in the direction along 21a and along the longitudinal direction of the groove 22) to move the core member 1 to the axis of the core part 2. Rotate 180 degrees around the core 2a (rotation process).

  As a result, as shown in FIG. 9C, the core member 1 held by the second holding jig 21 has the axis 2 a of the core portion 2 placed on the holding surface 21 a of the second holding jig 21. The region R2 having a predetermined angle with respect to the outer flange 3b where the external electrode is to be formed is positioned on the side opposite to the side facing the second holding jig 21.

  In addition, as the rotating jig 31, the thing of the structure similar to what was used in the above-mentioned Embodiment 1 was used. However, as a material constituting the coating layer (for example, rubber-based material), a second member is used so that the core member does not move (attach) from the second holding jig 21 to the rotating jig 31 side. The one having lower adhesive strength than the holding jig 21 is used.

  (E) Next, the rotating jig 31 is removed, and the second holding jig 21 is reversed and held in the second holding jig 21 as shown in FIG. By contacting the region R2 where the external electrode of the other side flange 3b protruding downward from the surface 21a is to be formed with the conductive paste (electrode material for forming the external electrode) 15 held on the table 16 The electrode material (conductive paste) 15 is applied (applied and dried) to the region R2 where the external electrode of the other side flange 3b is to be formed (second electrode applying step).

  Then, as described above, after applying the conductive paste to the region R1 where the external electrode of the one side flange 3a is to be formed and the region R2 where the external electrode of the other side flange 3b is to be formed, the core member is fired Then, by baking the conductive paste, the core member 1 having a pair of external electrodes 4a and 4b having a predetermined shape on the one side flange 3a and the other side flange 3b is obtained.

  Then, the winding 5 is wound around the core portion 2 of the core member 1, and both ends of the winding 5 are connected to the external electrodes 4a and 4b by solder or the like, thereby having a structure as shown in FIG. The coil component 10 is obtained.

  Also in the manufacturing method of the wire-wound coil component according to the second embodiment, the surface on the opposite side from the surface side of the one side collar part and the other side collar part opposite to each other at the predetermined position of the one side collar part and the other side collar part. A core member having an external electrode (inclined external electrode) that is inclined so that the height dimension gradually increases toward the surface can be reliably formed.

  In addition, since the core member is rotated about the axis of the core portion by the above-described method, a plurality of core members held on the first holding jig can be simultaneously rotated together. It becomes possible to process a large amount of core members in a short time. As a result, it is possible to efficiently manufacture a wound coil component having good characteristics and high reliability, which includes an external electrode with high shape accuracy.

  Furthermore, in Embodiment 2, since the core member is rotated after being transferred to the second holding jig, the region to which the electrode material of the one side collar portion is applied is the second region. Since it is in a position facing the second holding jig (that is, a position where the rotating jig is not pressed) when it is transferred to the holding jig, the applied electrode material has low strength. Even in this case, damage can be suppressed, and an external electrode with high shape accuracy can be formed. In addition, the portion of the second holding jig that contacts the core member is usually made of a material that is softer and more deformable than the portion of the rotating jig that contacts the core member. This reduces the risk of damage to the electrode material.

  Further, when the rotating jig is brought into contact with the core member held on the second holding jig and the core member is rotated about the axis of the core portion, the one side flange portion and the other side portion are rotated. Since the rotating jig is brought into contact with the region where the conductive paste for forming the external electrode is not formed, damage to the applied conductive paste can be suppressed.

  Further, according to the method for manufacturing a wire-wound coil component of the second embodiment, the same effects as those of the method for manufacturing the wire-wound coil component of the first embodiment can be obtained in other points.

[Embodiment 3]
Next, still another method for manufacturing the wire-wound coil component 10 will be described.
Similarly to the embodiment, a core member 1 having a core portion 2 and a pair of flange portions (one side flange portion 3a and the other side flange portion 3b) connected to both ends of the core portion 2 (see FIG. 1). ).

Then, the external electrodes 4a and 4b are formed by the procedure described below.
(A) As in the case of the first embodiment, as shown in FIG. 2, the core member 1 is wound around the core portion by the first holding jig 11 having a holding force for holding the core member 1 with an adhesive force. The second shaft center 2a should have a predetermined angle with respect to the holding surface (main surface on the side holding the core member 1) 11a of the first holding jig 11, and should form an external electrode of the one side flange 3a The region R1 is held in a posture protruding downward from the holding surface 11a of the first holding jig 11 from the other side flange 3b (holding step).
Also in the third embodiment, the first holding jig 11 is the same as the first holding jig 11 used in the first embodiment.

  (B) The step (a) is performed, the core member 1 is held by the first holding jig 11, and the outside of the one side flange 3a of the core member 1 protruded downward from the holding surface 11a. As shown in FIG. 3, the region R1 (see FIG. 2) where the electrode is to be formed is held on the table 16 as shown in FIG. 3 (electrode material for forming the external electrode). ) 15, the conductive paste 15 is applied (applied and dried) to the region R1 where the external electrode of the one side flange 3a is to be formed (first electrode applying step).

  (C) Next, as shown in FIG. 10A (a), the first holding jig 11 is turned upside down so that the conductive paste 15 on the one side flange 3a of the core member 1 is applied. The region (region in which the external electrode is to be formed) R1 is projected above the holding surface (main surface) 11a of the first holding jig 11.

Next, the second holding jig 21 having a holding force for holding the core member 1 is positioned so as to face the inverted first holding jig 11 (FIG. 10A (a)). Then, as shown in FIG. 10A (b), the second holding jig 21 is brought into contact with the core member 1 held by the first holding jig 11.
Also in the third embodiment, the second holding jig 21 is the same as the second holding jig 21 used in the first embodiment.

  10B (a) in the depth direction (the direction along the main surfaces 11a and 21a of the first and second holding jigs 11 and 12 and along the longitudinal direction of the grooves 12 and 22). The one holding jig 11 or the second holding jig 21 is relatively moved, and the core member 1 is rotated by 180 ° around the axis 2a of the core part 2 (rotation process). At this time, the core member 1 has an axis 2a of the core 2 having a predetermined angle with respect to the holding surface (main surface) 21a of the second holding jig 21, and the external electrode of the other side flange 3b. The region R2 to be formed is in a posture such that it is located on the side opposite to the side facing the second holding jig 21.

  (D) Then, as shown in FIG. 10B (b), the first holding jig 11 and the second holding jig 21 are separated, and the core member 1 is held by the second holding jig 21. Thereby, the core member 1 is in the second holding jig 21 in a state where the region R2 where the external electrode of the other side flange 3b is to be formed protrudes from the holding surface (main surface) 21a of the second holding jig 21. (Transfer process).

  (E) Next, as in the case of the first embodiment, as shown in FIG. 7, the second holding jig 21 that holds the core member 1 in the above-described manner is reversed and the second holding is performed. A conductive paste (electrode material for forming an external electrode) 15 that holds on the table 16 a region R2 where the external electrode of the other side flange 3b that protrudes downward from the holding surface 21a of the jig 21 is to be formed. The electrode material (conductive paste) 15 is applied (applied and dried) to the region R2 where the external electrode of the other side flange 3b is to be formed (second electrode applying step).

  Then, as described above, after applying the conductive paste to the region R1 where the external electrode of the one side flange 3a is to be formed and the region R2 where the external electrode of the other side flange 3b is to be formed, the core member is fired Then, by baking the conductive paste, the core member 1 having a pair of external electrodes 4a and 4b having a predetermined shape on the one side flange 3a and the other side flange 3b is obtained.

  Then, the winding 5 is wound around the core portion 2 of the core member 1, and both ends of the winding 5 are connected to the external electrodes 4a and 4b by solder or the like, thereby having a structure as shown in FIG. The coil component 10 is obtained.

  According to the method for manufacturing a wire-wound coil component of the third embodiment, the core member can be rotated around the axis of the winding core without using a rotating jig. At the same time, the manufacturing process can be simplified.

  In addition, according to the method for manufacturing a wire-wound coil component of the third embodiment, the same effects as those of the method for manufacturing the wire-wound coil component of Embodiment 1 can be obtained in other respects.

[Embodiment 4]
In the first to third embodiments, the core member 1 is rotated by 180 ° around the axis 2a of the core part 2 so that the external electrodes formed on the one side collar part and the other side collar part are The winding-type coil component having a structure in which the upper side is inclined on the side surfaces of the first and second flange portions is manufactured. However, when the core member 1 is rotated, as shown in FIG. When the direction of the axis 2a of the core 2 is X, and the direction perpendicular to the holding surface 11a or 21a of the first holding jig 11 or the second holding jig 21 holding the core member 1 is Y. In addition, the axis 2a of the core portion 2 rotates on the surface defined by X and Y (the surface corresponding to the paper surface in FIG. 11), and the angle with the holding surface 11a or 21a changes. In this way, the core member 1 can be rotated (see FIG. 12).

  11 and 12, the core member 1 in a state where the conductive paste 15 is applied to the region R1 where the external electrode of the one side flange 3a is to be formed is placed on the groove 12 of the first holding jig 11. As described above, a state before rotating using a rotating jig (not shown) (FIG. 11) and a state after rotating (FIG. 12) are shown.

  And after rotating the core member 1 hold | maintained at the 1st holding jig 11, as shown in FIG. 13, the 2nd holding jig 21 is made to contact | abut to the core member 1, and the core member 1 is made. As shown in FIG. 14, the other side flange 3 b that protrudes downward is transferred from the first holding jig 11 to the second holding jig 21 and held by the second holding jig 21. The region R2 where the external electrode is to be formed is brought into contact with the conductive paste (electrode material for forming the external electrode) 15 held on the table 16, so that the external electrode of the other side flange 3b should be formed. The conductive paste 15 can be applied (applied) also to the region R2.

  Instead of rotating the core member around the axis of the core as in the first to third embodiments, the core of the core rotates around the axis of the core as in the fourth embodiment. Even when the method of rotating so that the angle of the shaft center with respect to is changed is applied to the above-described first to third embodiments, the wire-wound coil component 10 as shown in FIG. 1 can be efficiently manufactured. it can.

  In each of the above-described embodiments, the first and second holding jigs have a configuration including a groove portion having an inclined slope, but a configuration having an inclined portion instead of the groove portion may be used. Is possible. In some cases, it is possible to use a holding surface that is usually flat and made of a material that can be deformed by pressing.

  In other respects, the present invention is not limited to the above embodiment, and the specific configuration of the core member, the first and second holding jigs, and the specific configuration of the rotating jigs. It is possible to add various applications and modifications within the scope of the invention.

DESCRIPTION OF SYMBOLS 1 Core member 2 Winding core part 2a Axis 3a One side collar part 3b which comprises a pair of collar part 3b The other side collar part 4a, 4b which comprises a pair of collar part A pair of external electrodes 5 Winding 10 Winding type coil components 11 First holding jig
11a Holding surface (main surface) of first holding jig
12 Groove portion of first holding jig 12a Side surface of groove portion of first holding jig 13 Holding member 14 Metal plate 15 Conductive paste (electrode material for forming external electrode)
16 Table 21 2nd holding jig 21a Holding surface (main surface) of 2nd holding jig
22 Groove portion of the second holding jig 22a Side surface of the groove portion of the first holding jig 23 Holding member 24 Metal plate 31 Rotating jig 31a Inclined portion R1 Region where the external electrode of one side flange should be formed R2 The other side L1 A region where the external electrode is to be formed L1 A line indicating the holding surface of the first holding jig L2 A line indicating the holding surface of the second holding jig X A line indicating the axial direction of the core portion of the core member 1 Y Line indicating the direction perpendicular to the holding surface of the first holding jig or the second holding jig

Claims (9)

A core member having a columnar core part and a pair of flanges provided at both ends of the core part, and a pair of one side collar part and the other side collar part formed in the pair of collar parts A winding-type coil component comprising an external electrode and a winding wound around the winding core, wherein the winding-type coil component is mounted on the one side collar and the other side collar In the region close to the object, the external electrode inclined such that the height dimension gradually increases from the opposite surface side of the one side collar part to the other side collar part is formed. In a method for manufacturing a wire-wound coil component having a structure,
Forming the external electrode comprises:
(A) The core member is held by the first holding jig having a holding force for holding the plurality of core members, and the core member of the first holding jig is held by the axis of the core portion. A region having a predetermined angle with respect to the holding surface, which is a main surface on the side to be formed, and the external electrode of the one side flange is to be formed by the holding of the first holding jig from the other side flange A holding step for holding in a posture protruding from the surface;
(B) The step of (a) is performed, and the region where the external electrode is to be formed on the one side flange projecting from the holding surface is brought into contact with the electrode material for forming the external electrode A first electrode applying step of applying an electrode material to a region where the external electrode of the one side collar portion is to be formed;
(C) After performing the step (b), a rotating jig for rotating the core member is brought into contact with the core member held by the first holding jig, and the rotating jig Is moved relative to the first holding jig in a direction along the main surface of the first holding jig, the core member is rotated, and the external electrode of the other side flange portion is rotated. A rotation step in which the region to be formed is in a posture facing the first holding jig;
(D) After carrying out the step (c), the core member held by the first holding jig is positioned so as to face the first holding jig. Transfer to a second holding jig having a holding force to hold, with respect to the holding surface that is the main surface of the second holding jig on the side holding the core member, the axis of the core portion The core member is placed in a posture having a predetermined angle and a region in which the external electrode of the other side flange is to be formed protrudes from the holding surface of the second holding jig from the one side flange. A transfer step of holding by a second holding jig;
(E) The step (d) is carried out to form the external electrode in a region where the external electrode of the other side flange projecting from the holding surface of the second holding jig is to be formed. And a second electrode applying step of applying an electrode material to a region where the external electrode of the other side flange should be formed by touching the electrode material Manufacturing method. A core member having a columnar core part and a pair of flanges provided at both ends of the core part, and a pair of one side collar part and the other side collar part formed in the pair of collar parts A winding-type coil component comprising an external electrode and a winding wound around the winding core, wherein the winding-type coil component is mounted on the one side collar and the other side collar In the region close to the object, the external electrode inclined such that the height dimension gradually increases from the opposite surface side of the one side collar part to the other side collar part is formed. In a method for manufacturing a wire-wound coil component having a structure,
Forming the external electrode comprises:
(A) The core member is held by the first holding jig having a holding force for holding the plurality of core members, and the core member of the first holding jig is held by the axis of the core portion. A region having a predetermined angle with respect to the holding surface, which is a main surface on the side to be formed, and the external electrode of the one side flange is to be formed by the holding of the first holding jig from the other side flange A holding step for holding in a posture protruding from the surface;
(B) The external side of the one side collar is brought into contact with an electrode material for forming the external electrode by contacting a region where the external electrode of the one side collar protruding from the holding surface is to be formed A first electrode applying step of applying an electrode material to a region where an electrode is to be formed;
(C) After carrying out the step (b), the core member held by the first holding jig is positioned so as to face the first holding jig. Transfer to a second holding jig having a holding force to hold, the axis of the core portion has a predetermined angle with respect to a holding surface which is a main surface on the side holding the core member, A transfer step of holding the core member by the second holding jig in a posture in which the region to which the electrode material of the side flange portion is applied faces the second holding jig;
(D) A rotating jig for causing the core member held by the second holding jig to rotate the core member about the axis of the core after performing the step (c). And rotating the core member by moving the rotating jig in a direction along the main surface of the second holding jig relative to the second holding jig, A rotation step in which a region where the external electrode of the other side flange should be formed protrudes from the holding surface of the second holding jig from the one side flange;
(E) The step (d) is carried out to form the external electrode in a region where the external electrode of the other side flange projecting from the holding surface of the second holding jig is to be formed. And a second electrode applying step of applying an electrode material to a region where the external electrode of the other side flange should be formed by touching the electrode material Manufacturing method. A core member having a columnar core part and a pair of flanges provided at both ends of the core part, and a pair of one side collar part and the other side collar part formed in the pair of collar parts A winding-type coil component comprising an external electrode and a winding wound around the winding core, wherein the winding-type coil component is mounted on the one side collar and the other side collar In the region close to the object, the external electrode inclined such that the height dimension gradually increases from the opposite surface side of the one side collar part to the other side collar part is formed. In a method for manufacturing a wire-wound coil component having a structure,
Forming the external electrode comprises:
(A) The core member is held by the first holding jig having a holding force for holding the plurality of core members, and the core member of the first holding jig is held by the axis of the core portion. A region having a predetermined angle with respect to the holding surface, which is a main surface on the side to be formed, and the external electrode of the one side flange is to be formed by the holding of the first holding jig from the other side flange A holding step for holding in a posture protruding from the surface;
(B) The step of (a) is performed, and the region where the external electrode is to be formed on the one side flange projecting from the holding surface is brought into contact with the electrode material for forming the external electrode A first electrode applying step of applying an electrode material to a region where the external electrode of the one side collar portion is to be formed;
(C) After carrying out the step (b), the core member held by the first holding jig is positioned so as to face the first holding jig. The second holding jig is pressed against a second holding jig having a holding force to hold the second holding jig relative to the first holding jig on the main surface of the first holding jig. The core member is rotated, the axis of the core portion has a predetermined angle with respect to the holding surface of the second holding jig, and the outside of the other side flange portion A rotation step in which a region where an electrode is to be formed protrudes from the holding surface of the second holding jig from the one side flange;
(D) After carrying out the step (c), the first holding jig is separated, and the axis of the winding core portion is at a predetermined angle with respect to the holding surface of the second holding jig. And the core member is held by the second holding jig in a state where the region on the other side flange where the external electrode is to be formed protrudes from the holding surface of the second holding jig. A transfer process to be
(E) The step (d) is carried out to form the external electrode in a region where the external electrode of the other side flange projecting from the holding surface of the second holding jig is to be formed. And a second electrode applying step of applying an electrode material to a region where the external electrode of the other side flange should be formed by touching the electrode material Manufacturing method.   The rotating jig has a structure in which a coating layer made of a material having frictional resistance and elasticity capable of rotating the core member in the rotating step is disposed on a surface of a rigid material. 3. A method for manufacturing a wire-wound coil component according to claim 1 or 2, wherein   5. The method of manufacturing a wound coil component according to claim 1, wherein, in the rotating step, the core member is rotated by 180 ° around an axis of the core portion.   In the rotating step, the axial center direction of the core portion of the core member is X, and the direction perpendicular to the holding surface of the first holding jig or the second holding jig holding the core member The core member so that the angle between the axis and the holding surface changes on the surface defined by X and Y when the axis is Y. 5. The method for manufacturing a wire-wound coil component according to claim 1, wherein:   The method for manufacturing a wound coil component according to any one of claims 1 to 6, wherein a holding force of the second holding jig is larger than a holding force of the first holding jig.   The winding type according to any one of claims 1 to 7, wherein the first holding jig and the second holding jig hold the core member detachably by adhesive force. Manufacturing method of coil parts.   The core member can be held in a state where the axis of the winding core portion has a predetermined angle with respect to the holding surfaces of the first holding jig and the second holding jig. The holding surface of the first holding jig and the second holding jig that holds the core member has an inclined portion or a groove portion with an inclined side surface. The manufacturing method of the coil type coil components in any one of 8.

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