JP2005322679A - Manufacturing method of coil component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a coil component, with which the structure of a manufacturing device of the coil component is further simplied. <P>SOLUTION: The manufacturing method of the coil component has a first arranging process. In the first arranging process, two conductors 24A and 24B whose each end is fixed to a clamp are sent out sequentially from two nozzles of a movable nozzle holder. The conductors 24A and 24B are arranged at positions confronted by respective electrodes 25A and 25B of one flange part 23. The first arranging process is provided with a crossing process. In the crossing process, the two conductors 24A and 24B are made to cross at one point near a connection position of a flange part 23 and a winding part 22 of a drum-type core 21. Each conductor 24A and each conductor 24B are arranged at positions confronting the electrodes 25A and 25B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a coil component, and more particularly to a method for manufacturing a coil component constituting a common mode filter for a small high frequency.

  As a coil component such as a common mode filter, a component having a drum type core and a conductive wire wound around the drum type core is conventionally known. The drum-type core constituting the coil component includes a pair of flange portions and a core portion that connects the pair of flange portions to each other. The flange portion is provided with an electrode to which a conducting wire is connected. A conducting wire is wound around the core. Some coil parts such as a common mode filter are so-called bifilar wound, in which two conductors are provided and the two conductors are alternately wound around a drum type core.

  Japanese Patent Application Laid-Open No. 2003-124031 describes a coil component in which two conductors are bifilar wound. The coil component includes a pair of flange portions, a core portion, and two conducting wires, and the pair of flange portions are provided with two electrodes, each having the same number as the number of conducting wires. One end of each of the two conductive wires is connected to an electrode of one flange portion, wound around a core portion, and the other end is connected to an electrode of the other flange portion.

In the method for manufacturing a coil component described in the publication, first, a portion corresponding to one end of a conducting wire is connected to an electrode of one flange portion. Next, the drum type core is rotated, and the conducting wire is wound around the core portion by the spindle method. After a predetermined number of turns, the portion corresponding to the other end of the conducting wire is connected to the electrode of the other flange portion.
JP 2003-124031 A (pages 3 to 5, FIG. 4)

  However, the gazette does not describe details of a specific coil component manufacturing method and manufacturing apparatus. For this reason, in order to implement the manufacturing method described in the publication, it is necessary to use a manufacturing apparatus for coil components having a complicated structure, and it is difficult to reduce the cost of the coil components to be manufactured. there were.

  Then, an object of this invention is to provide the manufacturing method of the coil components which can simplify the structure of the manufacturing apparatus of a coil components more.

  To achieve the above object, the present invention provides a drum type core comprising a pair of flange portions and a core portion that connects the pair of flange portions to each other, and electrodes are provided on the pair of flange portions, respectively. A method of manufacturing a coil component in which at least two conducting wires are wound and fixed, and at least two conducting wires each having one end fixed to a clamp are sequentially delivered from at least two nozzles of a movable nozzle holder, respectively. A first disposing step of disposing the conductive wires at positions of the one flange portion facing the respective electrodes; respectively, facing each of the electrodes of the one flange portion, facing each of the electrodes of the conductive wire. A first connection cutting step of connecting the portion and cutting the portion on the one end side of the connecting position of the conducting wire, and moving the drum type core and the nozzle holder relative to each other; Further, a winding step of winding each of the conducting wires around the core portion, and a second arranging step of arranging the conducting wires at positions facing the respective electrodes of the other flange portion of the drum type core. And connecting each portion of the conducting wire to each electrode of the other flange portion and cutting the portion on the nozzle side from the connecting position of the conducting wire. A cutting step, wherein at least one of the first placement step and the second placement step is performed in the vicinity of a connection position between the flange portion and the core portion of the drum type core. Is provided at a single point, and a coil component manufacturing method is provided, which includes a crossing step in which one conductive wire is disposed at a position facing each electrode. The connection is performed by thermocompression bonding, soldering, arc welding, laser welding, or the like.

  Here, in the crossing step, it is preferable that the conductors intersect at one point in a state where the substantially rod-shaped guides are respectively disposed between the conductors and the conductors are partitioned.

  In addition, at least one of the first arrangement step and the second arrangement step is such that, after the crossing step, the nozzle and the drum type core so as to press all the conductive wires against the one flange portion. It is preferable to provide a pressing step for relatively moving the two.

  Moreover, it is preferable that a groove corresponding to the number of the conducting wires is formed in each flange portion, and that each conducting wire is disposed in each of the grooves in the pressing step.

  Further, in the pressing step, it is preferable that the wire presser is arranged in each of the grooves by pressing the wire toward the flange portion of the drum type core.

  According to the method for manufacturing a coil component according to claim 1 of the present invention, at least one of the first arrangement step and the second arrangement step includes the flange portion and the core portion of the drum type core. In the vicinity of the connection position, a crossing step is performed in which all the conductors intersect at one point, and one conductor is arranged at a position facing each electrode, so that a plurality of conductors are wound. The number of pins and the like provided in the coil component manufacturing apparatus can be reduced as much as possible in order to support each conductor wire in a stretched state when it is wound around the core.

  For this reason, the routing of the wire can be simplified and the time required for manufacturing the machine tact, that is, the coil component, can be greatly reduced. In addition, it is not necessary to provide a mechanism for storing or moving the above-described pins or the like in a protruding or non-projecting state in the coil component manufacturing apparatus, thereby simplifying the configuration of the coil component manufacturing apparatus. Can do. Thereby, maintainability can be improved and equipment cost can be reduced.

  In addition, if the coil component manufacturing apparatus is provided with a large number of pins as described above and the conductor wire is forcibly stretched, the conductor wire becomes addictive, but the number of such pins can be reduced. It is possible to prevent as much as possible that the lead wire has a habit and is deformed. Since the conducting wire is not deformed, the conducting wire can be stably placed at the winding start position of the core portion, and the conducting wires can be neatly wound around the core portion with a predetermined distance therebetween. .

  In addition, since one end or the other end of the conducting wire can be connected to the electrode after making the positional relationship such that the plurality of conducting wires spread from the position where the one intersects at one point, positioning of the conducting wire with respect to the electrode is facilitated. can do. Moreover, the joining area of the connection to the electrode of a conducting wire can be enlarged, and joining strength can be raised. Further, the conductors can be reliably separated from each other. For this reason, even if the insulation coating is applied to the conducting wire, the insulation coating may be peeled off for any reason. Even in such a case, a short circuit can be prevented.

  According to the method for manufacturing a coil component according to claim 2 of the present invention, in the crossing step, one guide wire is provided in a state in which substantially rod-shaped guides are respectively arranged between the conductor wires and the conductor wires are partitioned. Therefore, even if the pair of flange portions where the electrodes are provided have a flat surface, the conductive wires can be stably opposed to the electrodes. In addition, the plurality of conductive wires can be wound around the core portion in a state of being separated from each other at a predetermined interval. For this reason, interference between the conducting wires can be prevented.

  According to the method for manufacturing a coil component according to claim 3 of the present invention, at least one of the first placement step and the second placement step is performed by connecting all the conductors to one side after the intersection step. Since the pressing step of moving the nozzle and the drum type core relative to each other so as to press against the flange portion is provided, each conductive wire arranged at a position facing each electrode is connected to the first connection cutting step or the first step. It can be easily connected in the 2-connection cutting process.

  According to the method of manufacturing a coil component according to claim 4 of the present invention, since the grooves corresponding to the number of the conductors are formed in the flange portions, the conductors are provided in the pressing step. It can be easily placed in each of the grooves.

  According to the method for manufacturing a coil component according to claim 5 of the present invention, in the pressing step, the wire presser presses the conducting wire toward the flange portion of the drum type core. It can arrange | position reliably in a groove | channel.

  A method for manufacturing a coil component according to an embodiment of the present invention will be described with reference to FIGS. Before describing the coil component manufacturing method and the coil component manufacturing apparatus 1 (FIG. 2 and the like) for carrying out the manufacturing method, first, for convenience of description, the coil component manufactured by the coil component manufacturing apparatus 1 first. 2 will be described. More specifically, the coil component 2 is a high-frequency common mode filter used in a small electronic device as shown in FIG. 1, and includes a drum type core 21 that is a magnetic core and two insulating coatings. Conductors 24A and 24B. The drum type core 21 is obtained by molding magnetic powder such as ferrite through a process such as compression and sintering.

  The drum type core 21 includes a core portion 22 and a pair of flange portions 23 and 23 ′ connected to both ends of the core portion 22. As shown in FIG. 30 to FIG. 33, the winding core portion 22 has a cross section cut along a plane perpendicular to the axial direction of the winding core portion 22, that is, the direction connecting the pair of flange portions 23, 23 ′. It has a substantially quadrangular shape having a second corner 22A, a second corner 22B, a third corner 22C, and a fourth corner 22D. Further, as shown in FIG. 1, the pair of flange portions 23 and 23 'passes through an intermediate point between one flange portion 23 and the other flange portion 23' constituting the pair of flange portions 23 and 23 '. The core portion 22 has a symmetrical shape with respect to a plane perpendicular to the axial direction. Therefore, for convenience of explanation, in each of the pair of flange portions 23 and 23 ', the same reference numerals are assigned to the portions of the flange portions 23 and 23' that are symmetrical to each other. explain.

  Each of the flange portions 23 and 23 'has a substantially rectangular parallelepiped shape, and includes a top surface 23A, a side surface 23C that forms a connection surface between the winding core portion 22 and the flange portions 23 and 23', a side surface 23B that faces the side surface 23C, and a side surface. It is defined by two side surfaces 23D and 23E that connect 23B and the side surface 23C, and a bottom surface (not shown).

  Grooves 23a and 23b are formed on the top surface 23A. The groove 23a and the groove 23b are inclined obliquely from the substantially central position in the axial direction of the core part 22 on the top surface 23A toward the core part 22, and a portion between the groove 23a and the groove 23b is A separation projection 23F that projects relatively to the grooves 23a and 23b is formed. The groove 23a is defined by an inclined portion 23a-1 forming a bottom surface and side wall portions 23a-2 and 23a-3 forming side surfaces. Similarly, the groove 23b is defined by an inclined portion 23b-1 forming a bottom surface and side wall portions 23b-2 and 23b-3 forming side surfaces. The side wall parts 23a-3 and 23b-3 define the separation convex part 23F.

  Two electrodes 25A and 25B are provided on the pair of flange portions 23 and 23 ', respectively. The electrode 25A and the electrode 25B are provided so as to extend from the top surface 23A to the side surface 23B, respectively, and pass through the center position in the width direction of the core portion 22 and are directed to the axial direction of the core portion 22 and the top surface. Symmetrical shapes are provided at symmetrical positions with respect to the plane including the normal line of 23A. These electrodes 25A and 25B are formed by plating the surfaces of the flange portions 23 and 23 '.

  A part of the electrodes 25A and 25B is disposed in the non-groove portion where the grooves 23a and 23b of the top surface 23A are not formed, and is also disposed in the grooves 23a and 23b. More specifically, the electrodes 25A-1 and 25B-1 forming a part of the electrodes 25A and 25B are respectively disposed in the non-groove portions where the grooves 23a and 23b of the top surface 23A are not formed, and the inclined portions 23a. -1 and the inclined portion 23b-1, the electrode 25A-2 and the electrode 25B-2, which are part of the electrodes 25A and 25B, are disposed, respectively, and the side wall 23a-2 and the side wall 23b-2 Are arranged with an electrode 25A-3 and an electrode 25B-3 forming part of the electrodes 25A and 25B, respectively.

  A conductive wire 24A is connected to the electrode 25A. The end portion of the conducting wire 24A is placed on the electrode 25A-1 from the vicinity of the intersection 25a where the electrodes 25A-1, 25A-2, and 25A-3 cross each other, and is subjected to thermocompression bonding, soldering, arc welding, and laser welding. It is connected by etc. The end of the end portion of the conducting wire 24A is disposed at a position from the intersection 25a toward the intersection of the side surface 23B and the side surface 23D. Similarly, the end portion of the conducting wire 24B connected to the electrode 25B-1 is disposed at a position from the intersection 25b toward the intersection of the side surface 23B and the side surface 23E. For this reason, the conducting wire 24A and the conducting wire 24B are connected so that the ends thereof are separated from each other toward the terminal.

  The conducting wires 24A and 24B connected to the electrodes 25A and 25B of the one flange portion 23 are drawn out toward the circumferential direction of the core portion 22 through the grooves 23a and 23b, respectively, thereby forming lead portions 24C and 24D. The core portion 22 is wound a predetermined number of times, and is drawn out in the direction of the electrodes 25A and 25B at the other flange portion 23 'to form a lead portion (not shown), and is connected to the electrodes 25A and 25B through the grooves 23a and 23b. . The dimensions of the drum type core 21 are 2 mm in the length in the vertical direction, that is, in the direction connecting the pair of flange portions 23 and 23 ′, the maximum width is 1.2 mm, and is extremely small. The diameters of the two conducting wires 24A and 24B wound around the drum type core 21 are 51 μm, respectively.

  The manufacturing apparatus 1 for manufacturing the coil component 2 as described above includes a chuck 11 for sandwiching the drum type core 21 of the coil component 2 and conductive wires 24A and 24B, as shown in FIGS. And a clamp 13 for sandwiching one end of the conducting wires 24A, 24B supplied from the nozzle 12, and a drum 12 for winding the conducting wires 24A, 24B around the drum type core 21 sandwiched by the chuck 11. And a manufacturing apparatus main body (not shown) for holding them.

  As shown in FIG. 2, the chuck 11 includes a fixed chuck 11A and a movable chuck 11B. As shown in FIG. 3, the fixed chuck 11A is fixed to a core cradle 11D placed on the spindle base 11C. As shown in FIG. 2, the half of the upper surface 11G of the core cradle 11D is fixed. The part of is covered. In FIG. 3, the right side of the figure is vertically upward, and the left side is vertically downward. Further, the X axis, the Y axis, and the Z axis in FIG. 2 will be described later.

  The movable chuck 11B is rotatably supported on the core cradle 11D by a pivot shaft 11E (FIG. 2), and covers most of the upper surface 11G of the core cradle 11D that is not covered by the fixed chuck 11A. Yes. The movable chuck 11B is rotated to open the chuck 11, and one flange portion 23 of the drum type core 21 is disposed between the distal end portion of the fixed chuck 11A and the distal end portion of the movable chuck 11B, as shown in FIG. In addition, one flange portion 23 of the drum type core 21 can be sandwiched between the distal end portion of the fixed chuck 11A and the distal end portion of the movable chuck 11B.

  Two relief portions 11 a and 11 b are formed at the tip of the fixed chuck 11 </ b> A that sandwiches one flange portion 23 of the drum type core 21. The escape portions 11a and 11b are recessed in a substantially semicircular shape as shown in FIG. 2 when viewed from vertically above. By forming the escape portions 11a and 11b, it is possible to prevent the electrodes 25A and 25B provided on one flange portion 23 of the drum type core 21 from coming into contact with the fixed chuck 11A.

  As shown in FIG. 3, the tip end portion 11F of the core cradle 11D is opposed to and abutted with the lower end in the vertical direction of one flange portion 23 of the drum-type core 21 when sandwiched. The bottom end in the vertical direction of one flange portion 23 is supported by the tip portion 11F of the cradle 11D.

  As shown in FIG. 3, in the position facing the lower end in the vertical direction of the other flange portion 23 'of the drum type core 21 when sandwiched, as shown in FIG. 3, the vertical direction, that is, the left-right direction in FIG. A backup 14 that extends and can move in the same direction is provided. When the drum type core 21 is nipped by the chuck 11 and the drum type core 21 is not rotating as will be described later, the backup 14 is moved vertically downward from the vertical by a spindle (not shown), that is, 3 moves from the left direction to the right direction, moves to the same height as the upper surface 11G of the core receiving base 11D on which the fixed chuck 11A is placed, and the vertical upper end of the backup 14 is the other flange portion. It is comprised so that it may contact | abut to the vertical direction lowest end of 23 '. The backup 14 is configured so that when the drum type core 21 is rotating, it retracts vertically downward and does not collide with the drum type core 21.

  A discard pin 11H, a right wire positioning pin 11I, and a left wire positioning pin 11J are fixed to the spindle base 11C. As shown in FIG. 2, the discard pin 11 </ b> H is a virtual extension on the side of one flange portion 23 in the direction connecting the pair of flange portions 23, 23 ′ of the drum type core 21 held by the chuck 11. Located on line a. The left wire positioning pin 11J and the right wire positioning pin 11I are fixed side by side in this order when viewed in the direction from the throwing pin 11H toward the drum type core 21, and are each a predetermined distance from the virtual extension line a to the left and right. Only fixed at the offset position.

  The discard pin 11H and the right wire positioning pin 11I pass through the fixed chuck 11A, the core receiving base 11D, and the spindle base 11C, respectively, that is, the opposite side of the spindle base 11C from the side on which the chuck 11 is provided, that is, At the position of the left side surface 11K in FIG. 3 of the spindle base 11C, E-rings (not shown) are respectively mounted on the end portions of the discard pin 11H and the right wire positioning pin 11I. As a result, the discard pin 11H and the right wire positioning pin 11I are configured so as not to move in the axial direction, and not to fall off from the spindle base 11C.

  Similarly, the left wire positioning pin 11J passes through the core receiving base 11D and the spindle base 11C, and the left wire positioning pin 11J has an E ring (not shown) at the position of the left side surface 11K in FIG. 3 of the spindle base 11C. Is wrapped around. As a result, the left wire positioning pin 11J is configured so as not to move in the axial direction thereof and to prevent the left wire positioning pin 11J from falling off the spindle base 11C.

  As shown in FIG. 3, the discard pin 11 </ b> H, the right wire positioning pin 11 </ b> I, and the left wire positioning pin 11 </ b> J have reduced diameter portions 11 </ b> L, 11 </ b> M, and 11 </ b> N as shown in FIG. The portion protruding vertically upward from the fixed chuck 11A or the core cradle 11D has a shape as if an umbrella was opened, and the conductors 24A or 24B are hung on the step portions 11O, 11P, and 11Q. It is configured.

  The lengths A, B, and C of the reduced diameter portions 11L, 11M, and 11N in the protruding direction of the discard pin 11H, the right wire positioning pin 11I, and the left wire positioning pin 11J, that is, the direction from the left side to the right side in FIG. The length A of the discard pin 11H is the shortest 0.3 mm, the length B of the left wire positioning pin 11J is 0.45 mm, and the length C of the right wire positioning pin 11I is the longest 0.55 mm. . As described above, since the lengths A, B, and C of the reduced diameter portions 11L, 11M, and 11N are different, the nozzle holder 12A is moved as will be described later, and the conductive wires 24A and 24B fed from the nozzle 12 are crossed. It is possible to prevent the conductive wires 24A and 24B from being entangled with each other.

  The core holding portion 10 including the spindle base 11C, the core receiving base 11D, and the chuck 11 is configured to rotate integrally around a virtual extension line a (FIG. 2) extending from the drum type core 21 to the throwing pin 11H. When the conductive wires 24A and 24B are wound around the core portion 22 of the drum type core 21, the drum type core 21 is also virtually extended by rotating the drum type core 21 while being held by the chuck 11. The wire a (FIG. 2) is rotated about the rotation axis, and the conductive wires 24 </ b> A and 24 </ b> B fed from the nozzles 12 and 12 are wound around the core portion 22.

  Further, in the upper part of FIG. 2 (not shown), the parts having the same shape as the spindle base 11C, the core receiving base 11D, and the chuck 11 shown in FIG. 2 are rotationally symmetrical with respect to these parts shown in FIG. 2, and a pair of chucks each including a chuck 11 and a chuck 11 (not shown) with a rotationally symmetrical positional relationship as a whole are provided in the upper and lower directions of FIG. 2.

  The pair of chucks constitute the core holding portion 10 and are rotation shafts (not shown) that pass through a substantially intermediate position between the upper portion (not shown) and the lower portion (shown in FIG. 2). The entire core holding portion 10 can be rotated integrally around a rotation axis (not shown) that is directed in a direction connecting the front and back surfaces of the core, and the rotation axis coincides with the rotational symmetry center of the pair of chucks. The core holding portion 10 is pivotally supported by a manufacturing apparatus main body (not shown) at the position of the rotation shaft, and is rotatable relative to the manufacturing apparatus main body (not shown). It is fixed so as not to move in the Y-axis and Z-axis directions.

  With this configuration, while the conductive wires 24A and 24B are wound around the first drum type core 21 sandwiched by one chuck 11 shown in FIG. 2, the other chuck (not shown) is not shown. When the second drum type core is sandwiched and the conductive wires 24A and 24B are wound around the first drum type core 21, the entire core sandwiching portion 10 is rotated by 180 ° around the rotation axis. In addition, the conductors 24A and 24B can be continuously wound around the drum type core 21 such that the conductors 24A and 24B are wound around a second drum type core (not shown).

  As shown in FIG. 4, two nozzles 12 and 12 are provided, and extend from the nozzle holder 12A vertically downward, that is, downward in FIG. The distance D (FIG. 2) between the tips of the two nozzles 12 and 12 is 4 mm. The nozzle holder 12A is a rotation axis (not shown) parallel to the two nozzles 12 and 12, and is rotatable around a rotation axis (not shown) passing through an intermediate position between the two nozzles 12 and 12. As the nozzle holder 12A rotates, the two nozzles 12 and 12 rotate about the rotation axis. The positions of the vertical lower ends of the two nozzles 12, 12 are always the same. 2 and FIG. 7 to be referred to later, the nozzle holder 12A is simplified and represented by a circle for convenience of explanation, and the two nozzles 12 and 12 are represented by two small two circles in the nozzle holder 12A.

  Above the nozzles 12 and 12 shown in FIG. 4, two bobbins (not shown) are provided for supplying the conductors 24A and 24B fed from the two nozzles 12 and 12 to the nozzles 12 and 12, respectively. Yes. Further, a tension device (not shown) is provided above the nozzles 12 and 12, and the conducting wires 24A and 24B fed out from two bobbins (not shown) are respectively in a state where a predetermined tension is applied, The nozzle 12 is extended from the tip of the nozzle 12 through the inside of the nozzle 12.

  As shown in FIG. 2, it is a direction connecting the pair of flange portions 23, 23 ′ of the drum type core 21 held between the chucks 11, and from the other flange portion 23 ′ to the one flange portion 23. The direction to go is the + direction of the X axis, the direction perpendicular to the direction of the X axis and the direction from the left to the right in FIG. 2 is the + direction of the Y axis, and in the direction of the X axis and the direction of the Y axis Assuming that the vertical direction is the direction from the back side to the front side in FIG. 2, that is, the vertically upward direction is the + direction of the Z axis, the nozzle holder 12A has a spindle base 11C, a core receiving base 11D, and two chucks 11 It is possible to move in the directions of the X axis, the Y axis, and the Z axis with respect to a manufacturing apparatus main body (not shown) that rotatably supports the entire core holding part 10 made of the like.

  As will be described later, the nozzle holder 12A is always configured to gradually move in the + direction of the Z-axis during a predetermined process of the coil component manufacturing method. . As described above, the positions of the bottom ends of the two nozzles 12 and 12 in the vertical direction are always the same, but the nozzle holder 12A always gradually moves in the + direction of the Z axis. , And the lengths A, B, and C of the reduced diameter portions 11L, 11M, and 11N in the protruding direction of the throwing pin 11H, the right wire positioning pin 11I, and the left wire positioning pin 11J are different from each other. Conductors 24A and 24B that are stretched between the step portions 110, 11P, and 11Q of the right wire positioning pin 11I and the left wire positioning pin 11J and the tips of the nozzles 12 and 12 during the manufacturing method. However, it is possible to prevent the nozzle holder 12A from being entangled with each other due to a complicated movement of the nozzle holder 12A in the XY axis direction.

  The clamp 13 can clamp one end of each of the conducting wires 24A and 24B drawn from the two nozzles 12 and 12, respectively, and one end of each of the two conducting wires 24A and 24B sandwiched by the clamp 13 is not shown. It is fixed so that it cannot move with respect to the manufacturing equipment body. Accordingly, when the nozzles 12 and 12 are moved by moving the nozzle holder 12A as will be described later, one end of the two conductors 24A and 24B is fixed. Two conducting wires 24A and 24B are fed out from the two nozzles 12 and 12, respectively.

  The coil component manufacturing apparatus 1 is provided with a wire pressing member 15 as shown in FIG. The line pressing member 15 is constituted by a member extending in the Y-axis direction, that is, the left-right direction in FIG. 5, and the first line pressing portion 15A, the second line pressing portion 15B, and the third line pressing portion 15C (FIG. 40). And is movable in the X-axis direction, the Y-axis direction, and the Z-axis direction. For this reason, it is comprised so that it can respond easily, even when manufacturing a coil component of a different shape using the drum type core 21 of a different shape from the drum type core 21 in this Embodiment.

  The first line pressing portion 15A will be described later. As shown in FIG. 5, the second line pressing portion 15 </ b> B is an end portion of the line pressing member 15 and is configured by a right end portion shown in FIG. 5. The second line pressing part 15B has a second line pressing convex part 15D protruding from one flange part 23 of the drum type core 21 toward the other flange part 23 '. The tip of the second line pressing convex portion 15D is about 40 μm from the other flange portion 23 ′ of the drum type core 21 toward one flange portion 23, that is, from the other flange portion 23 ′ toward the upper side in FIG. Until the distance E is reached, the separation projection 23F (FIG. 1) of the other flange portion 23 ′ can be approached.

  The conductors 24A and 24B can be respectively arranged at the left and right positions in FIG. 5 of the second wire pressing convex portion 15D by being in such a close state during the manufacturing method of the coil component. Thus, it can be prevented that the two conductors 24A and 24B are disposed on the right side of the second wire pressing convex portion 15D and the two conductors 24A and 24B are disposed on the left side. It is configured.

  15 A of 1st line | wire pressing parts are provided in the part which left a little from the right end shown in FIG. The negative direction end of the Z axis of the first line pressing portion 15A, that is, the vertical lower end of the first line pressing portion 15A located below in FIG. 5 is a flat surface, and as shown in FIG. Two conductors 24A, 24B are pressed vertically downward from above, and the conductors 24A, 24B can be arranged in two grooves 23a, 23b formed in one flange portion 23 of the drum type core 21. Has been.

  The third line pressing portion 15C (FIG. 40) is movable in the XY-axis direction integrally with the line pressing member 15, and is relative to the first line pressing portion 15A and the second line pressing portion 15B in the Z-axis direction. It is movable. The negative Z-axis end of the third line pressing portion 15C, that is, the vertical lower end of the third line pressing portion 15C located on the back side of the paper surface of FIG. 40 is a flat surface, as shown in FIG. Similarly to the first wire pressing portion 15A, the two conductive wires 24A and 24B are pressed vertically downward from the vertical upper direction, and the conductive wires are connected to the two grooves 23a and 23b formed in the other flange portion 23 'of the drum type core 21. 24A and 24B can be arranged.

  The coil component manufacturing apparatus 1 includes a left finish side wire positioning pin 16A, a right finish side wire positioning pin 16B (FIG. 41, etc.), a heater chip 17 (FIG. 21, etc.), and a cutter 18 (FIG. 25). Is provided. The left finish side wire positioning pin 16A and the right finish side wire positioning pin 16B are each made of a round bar and have a substantially constant diameter. Steps such as the discard pin 11H, the right wire positioning pin 11I, and the left wire positioning pin 11J are not provided. Not provided. As will be described later, in the coil component manufacturing method and winding method, as shown in FIGS. 41 to 51, only when the conductors 24A and 24B are connected to the electrodes 25A and 25B of the other flange portion 23 ′, the Z axis In the + direction, that is, vertically upward, the nozzles 12 and 12 are configured to protrude to substantially the same position.

  In other cases, the left finish side wire positioning pin 16A and the right finish side wire positioning pin 16B are retracted and retracted in the negative direction of the Z axis. Does not interfere with the lead wires 24A and 24B drawn out from the wire.

  The heater chip 17 connects the conductive wires 24A and 24B to the electrodes 25A and 25B by crimping the conductive wires 24A and 24B to the electrodes 25A and 25B. The heater chip 17 is movable in the X, Y, and Z axis directions, and is retracted and retracted except when it is connected. What are the lead wires 24A and 24B fed from the nozzles 12 and 12 and the nozzles 12 and 12? Does not interfere.

  The cutter 18 cuts the conductive wires 24A and 24B. The cutter 18 is movable in the X, Y, and Z axis directions, and is in a state of being retracted and retracted except when cutting the conducting wires 24A and 24B, and the conducting wires 24A fed from the nozzles 12 and 12 and the nozzles 12 and 12, It does not interfere with 24B.

  Next, the manufacturing method of a coil component is demonstrated. In addition, the winding method of coil components comprises a part of manufacturing method of coil components. In the method of manufacturing a coil component, first, as shown in FIG. 6, the nozzle 11 is sandwiched between the flanges 23 of the drum type core 21 by the chuck 11 so that the positional relationship shown in FIG. 12 and 12, one end of two conducting wires 24A and 24B drawn from 12 and 12 is clamped and fixed by a clamp 13, and the nozzle holder 12A is moved to start a coil component manufacturing method (FIG. 7). To place.

  When viewed in the Z-axis direction, that is, in the vertical direction, the position of the tip of the nozzle 12, 12 that is the lowest end of the nozzle 12, 12 at the home position is the position of the reduced diameter portion 11L (FIG. 3) of the throwing pin 11H. It is almost coincident. After the home position shown in FIG. 7, until the conductors 24 </ b> A and 24 </ b> B are arranged substantially vertically above the electrodes 25 </ b> A and 25 </ b> B as shown in FIG. 15, the nozzles 12 and 12 are connected to the nozzle holder 12 </ b> A. Integrally, it continues to move in the + direction of the Z-axis at a substantially constant speed. For this reason, when the two conducting wires 24A and 24B are crossed as described later, the conducting wires 24A and 24B can be prevented from being entangled with each other.

  Next, as shown in FIG. 8, the nozzle holder 12A is moved in the positive direction of the X axis and the negative direction of the Y axis, and as shown in FIG. ) Hook the two conductive wires 24A and 24B from above in FIG. Next, the nozzle holder 12A is moved in the negative direction of the X-axis, and as shown in FIG. 10, the step portion 11P (FIG. 3) of the left wire positioning pin 11J has two conductors 24A and 24B. One lead wire 24A is hooked from the upper direction of FIG.

  Next, as shown in FIG. 11, the nozzle holder 12A is moved in the + direction of the Y axis, and as shown in FIGS. 12 and 13, the nozzle holder 12A is moved in the -direction of the X axis, The other conductor 24B of the two conductors 24A and 24B is hooked on the step 11Q (FIG. 3) of the wire positioning pin 11I from above in FIGS. 12 and 13 and moved slightly in the negative direction of the Y axis. The two nozzles 12 and 12 are moved so that the position of the negative direction of the X axis is more than the other flange portion 23 ′ of the drum type core 21. At this time, the two nozzles 12 and 12 are in the same position when viewed in the X-axis direction, and an intermediate position between the two nozzles 12 and 12 is a plane including the X-axis and the Y-axis. When viewed, it matches the virtual line a.

  Since the conducting wires 24A and 24B are hooked on the step portions 110, 11P, and 11Q, when the nozzles 12 and 12 are moved in the X-axis direction and the Y-axis direction together with the nozzle holder 12A as described above, the conducting wires 24A and 24B. Does not deviate from the step portions 110, 11P, 11Q.

  Next, a 1st arrangement | positioning process is performed. In the first arrangement step, the nozzle holder 12A is rotated 180 ° counterclockwise as shown in FIG. 14, and the nozzles 12 and 12 are shown in FIG. 13 when viewed in a plane including the X axis and the Y axis. The two conductive wires 24 </ b> A and 24 </ b> B are crossed so as to be symmetrical with respect to the indicated position about the virtual line a.

  Then, as shown in FIG. 15, the conductors 24 </ b> A and 24 </ b> B are disposed at positions facing the two electrodes 25 </ b> A and 25 </ b> B of the one flange portion 23, respectively, The position of the nozzle holder 12A is corrected so that the two conducting wires 24A and 24B intersect each other in the vicinity of the connection position between the flange portion 23 and the core portion 22. At this time, the two conducting wires 24A and 24B are positioned substantially vertically above the two grooves 23a and 23b of the one flange portion 23 and the two electrodes 25A and 25B. The above is the first arrangement step. Of the first arrangement step, the step of intersecting the two conductors 24A and 24B and positioning the two conductors 24A and 24B substantially vertically above the two electrodes 25A and 25B corresponds to the intersection step.

  As described above, the lengths of the reduced diameter portions 11M and 11N of the left wire positioning pin 11J and the right wire positioning pin 11I are different from each other, and the reduced diameter portion 11N of the right wire positioning pin 11I is the left wire positioning pin. 11J, which is longer than the reduced diameter portion 11M, and the nozzles 12 and 12 continue to move in the + direction of the Z axis at a substantially constant speed integrally with the nozzle holder 12A. When crossed, the conductor 24B hooked to the right wire positioning pin 11I can always be vertically above the conductor 24A hooked to the left wire positioning pin 11J.

  When the two conductors 24A and 24B are wound around the core 22 of the drum type core 21, it is necessary to support the conductors 24A and 24B in a stretched state. However, as described above, the two conductors 24A and 24B are supported. When the conductors 24A and 24B are stretched without crossing each other, it is necessary to provide a large number of pins for supporting the conductors 24A and 24B in the coil component manufacturing apparatus 1. In addition, the pins must be configured to protrude when necessary so that the conductors 24A and 24B can be hooked, and to retract so that the conductors 24A and 24B are not hooked when not required. Further, in order to set the positions of the conducting wires 24A and 24B in the Z-axis direction to a desired position, the pin must be adjustable to a desired protruding amount. Furthermore, it must be possible to perform these operations with very high accuracy. Therefore, it is necessary to configure the coil component manufacturing apparatus 1 so as to perform complicated movement with very high accuracy.

  However, in the crossing step, the two conductive wires 24A and 24B are crossed at one point in the vicinity of the connection position between the flange portion 23 and the core portion 22 of the drum type core 21, and are positioned at positions facing the electrodes 25A and 25B. Since the conducting wires 24A and 24B are arranged one by one, it is possible to minimize the necessity of providing such a complicated moving pin in the coil component manufacturing apparatus 1.

  For this reason, it is not necessary to provide the coil component manufacturing apparatus 1 with a mechanism for moving the pins or the like so as to be protruded or housed in a non-projected state, and the configuration of the coil component manufacturing apparatus 1 can be simplified. Can be. Further, the lead wires 24A and 24B can be easily routed, and the time required for manufacturing the machine tact, that is, the coil component 2, can be greatly reduced. Moreover, this can improve maintainability and can reduce equipment cost. Moreover, even when it is a case where it is going to wind a conducting wire around the drum type core from which size differs, a conducting wire can be easily arrange | positioned in the position facing an electrode, and can be wound.

  In addition, since one end or the other end of the conducting wires 24A, 24B can be connected to the electrodes 25A, 25B after the positional relationship is established such that the plurality of conducting wires 24A, 24B spread from the position where they intersect at the one point. The positioning of the conductors 24A and 24B to the positions facing the electrodes 25A and 25B can be facilitated. Moreover, the joining area of conducting wire 24A, 24B and electrode 25A, 25B can be enlarged, and joining strength can be raised. Further, the conductors 24A and 24B can be reliably separated from each other, and even when the conductors 24A and 24B are covered with an insulating coating and the insulating coating is peeled off, a short circuit can be prevented.

  Next, the nozzle holder 12A is moved in the negative direction of the Z axis, and as shown in FIG. 16, the conductors 24A and 24B are pressed against the electrodes 25A and 25B (FIG. 15 and the like) of one flange portion 23. Perform the application process. At this time, since two grooves 23a and 23b are formed in one flange portion 23 of the drum type core 21, two conductors 24A and 24B are respectively provided in the two grooves 23a and 23b. Be placed. Next, as shown in FIGS. 17 and 18, the flat surface of the first line pressing portion 15 </ b> A (FIG. 18) of the line pressing member 15 has two grooves 23 a and 23 b of one flange portion 23 of the drum type core 21. The conductors 24A and 24B are pressed and regulated so that the conductors 24A and 24B do not come out from the grooves 23a and 23b, and the conductors 24A and 24B are regulated by the grooves 23a and 23b. Surely placed inside.

  Since the conductive wires 24A and 24B are pressed by the flat surface of the first wire pressing portion 15A, the conductive wires 24A and 24B which are insulated and coated are pressed and pressed by the pressing of the conductive wires 24A and 24B of the first wire pressing portion 15A. This can be prevented. Further, when the intersecting conductors 24A and 24B are pressed, the first wire pressing portion 15A can be prevented from being caught by the conductors 24A and 24B, and the two conductors 24A and 24B are in a state of being crossed cleanly. be able to. Further, the flat surface portion of the first line pressing portion 15A is easy to manufacture, and the cost for manufacturing the line pressing member 15 having the first line pressing portion 15A can be reduced. Further, the flat surface portion is easy to polish and can be easily cleaned.

  Next, as shown in FIG. 19 and FIG. 20, the nozzle holder 12A is moved in the positive direction of the Z axis, rotated 180 ° counterclockwise, moved in the positive direction of the Y axis, and the negative direction of the Z axis. Move to. The reason why the nozzle holder 12A is moved in the positive direction of the Z-axis before the nozzle holder 12A is rotated is that the lead wires 24A and 24B in which the tip of one nozzle 12 is fed from the other nozzle 12 when the nozzle holder 12A is rotated. In the same manner, the tip of the other nozzle 12 is prevented from being caught by the conductive wires 24A and 24B fed from the one nozzle 12. As shown in FIGS. 19 and 20, when moving the nozzle holder 12A in the positive direction of the Z axis, the first wire pressing portion 15A is kept in the state shown in FIG. This is to keep maintaining the state where 24A and 24B intersect.

  Next, a 1st connection cutting process is performed. In the first connection cutting step, as shown in FIGS. 21 and 22, the heater chip 17 is vertically directed downward from the upper part of the conductors 24 </ b> A and 24 </ b> B facing the electrodes 25 </ b> A and 25 </ b> B of one flange portion 23. The line pressing member 15 is offset as shown in FIG. Then, as shown in FIG. 24, the conductor wires 24A and 24B are pulse-heat bonded to the electrodes 25A and 25B by the heater chip 17. The reason why the wire pressing member 15 is offset is to completely prevent urethane, which is a coating material covering the conductive wires 24A and 24B, from being scattered and deposited on the first wire pressing portion 15A during pulse heating. It is.

  Then, as shown in FIGS. 25 and 26, the position of the one flange portion 23 of the drum type core 21 sandwiched between the chucks 11 by the cutter 18 immediately on the + direction side of the Z axis, that is, the conducting wires 24 </ b> A and 24 </ b> B. The two conducting wires 24A, 24B are cut at a position closer to one end of the conducting wires 24A, 24B than the connecting position of the wire, and as shown in FIG. 27, the clamp 13 is moved in the + direction of the Y axis, and the nozzle holder 12A It arrange | positions in the position away from. The portions of the conductive wires 24A and 24B on the side fixed to the clamp 13 are sucked and discarded by a vacuum cleaner (not shown). The above is the first connection cutting step.

  Next, as shown in FIGS. 28 and 29, the nozzle holder 12A is moved in the positive direction of the X axis and the negative direction of the Y axis, rotated in the clockwise direction, and on a plane including the X axis and the Y axis. When viewed, the positional relationship is such that the tip of one nozzle 12 substantially coincides with the conductive wire 24 </ b> B drawn from the other nozzle 12. At this time, the distance between the tip of the nozzle 12 and the core part 22 of the drum type core 21 when viewed in a plane including the X axis and the Y axis is 1.2 mm or less. By disposing the tip of the nozzle 12 at a position close to the drum type core 21 so as to be 1.2 mm or less, the conductive wires 24A and 24B are connected to the first corner of the core portion 22 of the drum type core 21 as described later. When pressed against 22A (FIG. 30 and the like) and bent in conformity with the shape of the first corner 22A, the nozzle 12 can be moved slightly without moving significantly in the negative direction of the Z axis.

  Next, as shown in FIGS. 30 and 31, the nozzle holder 12 </ b> A is moved in the negative direction of the Z axis. The position of the tip of the nozzle 12 after the movement is a position moved about 0.7 mm from the upper end to the lower end shown in FIGS. 30 and 31 of the flange portion 23 of the drum type core 21. As a result, the conducting wire 24A is pushed down vertically at the tip of one nozzle 12, the conducting wire 24A is pressed against the first corner 22A of the core portion 22 of the drum type core 21, and the conducting wire 24A is rotated around the core portion 22. It is bent following the shape of the direction, that is, the shape of the first corner 22A. The steps from the very first step of the manufacturing method of the coil component up to here correspond to the first bending step.

  As shown in FIG. 29, the two conductors 24A, 24B connected to the electrodes 25A, 25B of the flange portion 23 of the drum type core 21 are drawn out in the right direction in FIG. These become the drawer portions 24C and 24D (FIG. 1), respectively. The shorter one 24D of the lead-out portions 24C, 24D is stabilized at the winding start position by hitting the position of the core portion 22 connected to the flange portion 23 of the drum type core 21, but the longer one 24C particularly hits. The winding start position was not stable because there was no part. However, as shown in FIG. 29, the conductor 24A corresponding to the longer one 24C of the lead portions 24C and 24D (FIG. 1) is bent following the shape of the first corner 22A of the core portion 22. Therefore, the bent portion is hooked on the first corner 22A (FIG. 30), and the portion that becomes the drawer portion 24C can be stabilized. For this reason, the winding start position when winding the conducting wires 24A and 24B in the conducting wire winding process described later can be stabilized, and the winding of the conducting wires 24A and 24B around the winding core portion 22 can be performed as intended. It can be done neatly with line spacing and winding pitch.

  Next, the nozzle holder 12A is moved in the direction of the X axis, and a winding angle adjusting step is performed for adjusting the winding angle when winding the conductive wires 24A and 24B around the core portion 22 in the conductive wire winding step described later. .

  Next, a conducting wire winding step of winding the conducting wires 24 </ b> A and 24 </ b> B around the core portion 22 of the drum type core 21 is performed. In the conducting wire winding process, the drum type core 21 is rotated about the imaginary line a as a rotation axis, and the nozzles 12 and 12 are relatively moved in the X direction to move from one flange portion 23 side to the other flange portion 23 'side. The conductive wires 24A and 24B are wound around the core portion 22 in a spiral shape.

  More specifically, in the first winding in the conducting wire winding process, first, the first tension is applied to the conducting wires 24A and 24B by the tension device provided in the nozzle holder 12A, as shown in FIG. Further, by rotating the core holding portion 10 (FIG. 2) about the imaginary line a as the rotation axis, the drum type core 21 is moved from the − side of the X axis shown in FIG. A second bending step is performed in which the substrate is rotated 90 ° counterclockwise when viewed in the direction toward the. In the second bending step, the two conductors 24A and 24B are pressed against the second corner 22B adjacent to the first corner 22A of the core portion 22 of the drum type core 21, respectively, and follow the second corner 22B. The conducting wires 24A and 24B can be bent into a shape.

  For this reason, the portions of the conductors 24A and 24B bent by the pressing to the core portion 22 and different from the winding start position can be stably disposed at a predetermined position of the core portion 22, The winding start positions of the conducting wires 24A and 24B can be more stably arranged at positions corresponding to the winding start positions of the winding core portion 22.

  In addition, when bending conducting wire 24A, 24B by a 1st bending process and a 2nd bending process, the tension | tensile_strength added to conducting wire 24A, 24B extended | stretched from the nozzles 12 and 12 is not intentionally raised. Even if it is not intentionally increased, the angle formed between the extending direction of the nozzles 12 and 12 when the conducting wires 24A and 24B are bent and the direction in which the conducting wires 24A and 24B are extended at the tips of the nozzles 12 and 12 is as follows. As the nozzles 12 and 12 move in the negative direction of the Z-axis, they gradually become acute angles, so that appropriate natural tension is applied to the conductors 24A and 24B, and the first and second angles 22A and 22B This is because the conductive wires 24A and 24B can be bent appropriately.

  Next, a nozzle position moving step for moving the nozzle holder 12A in the + direction of the Z axis is performed. As shown in FIG. 33, the tips of the nozzles 12 and 12 are moved from the position of the nozzles 12 and 12 in the second bending step from the virtual tangent position of the rotation circle b of the core portion 22 as shown in FIG. The lead wires 24A and 24B are moved radially outward to a position separated by the approximate diameter.

  Thus, the conductive wires 24 </ b> A and 24 </ b> B can be brought into a state where they are not pressed by the second corner 22 </ b> B of the core portion 22 of the drum type core 21. For this reason, when winding the lead wires 24A and 24B around the core portion 22 by rotating the core portion 22 having a substantially rectangular cross section cut by a plane perpendicular to the rotation axis of the drum type core 21, the lead wire 24A , 24B can be prevented from swinging in the vertical vertical direction, that is, the vertical direction in FIG.

  Next, the drum type core 21 is rotated by 270 ° about the rotation axis, and the rotation is temporarily stopped to complete the first roll. In addition, while conducting the 1st volume, in order to make conducting wire 24A, 24B wind around the core part 22 with a predetermined | prescribed winding pitch, like 1st volume after the following, The nozzles 12 and 12 are continuously moved toward the negative direction of the X axis at a value suitable for the amount of eye movement.

  Next, the rotation angle of the nozzle holder 12A is reset to a value suitable for the second roll, and the second tension is applied to the conducting wires 24A and 24B by the tension device provided in the nozzle holder 12A. Further, the movement amount in the X direction of the nozzles 12 and 12 is reset to a value suitable for the second volume. Then, while rotating the drum-type core 21 by 360 °, the nozzles 12 and 12 are moved in the X-axis direction by the set amount of movement, and the rotation is temporarily stopped to finish the second roll.

  In the same manner as the second winding, the third and subsequent windings are repeated a predetermined number of times, and the wires 24A and 24B are wound around the core portion 22 of the drum type core 21 as shown in FIG. Since the two nozzles 12 and 12 are separated from each other by a predetermined distance, the two conducting wires 24A and 24B are wound around the core portion 22 in a state of being separated from each other by a predetermined distance. The above is the conductor winding process. The wire winding process corresponds to a winding process. The drum type core 21 always rotates in the counterclockwise direction when viewed in the direction from the minus side to the plus side of the X axis with a as the rotation axis.

  Further, since the rotation angle of the nozzle holder 12A is set every time the drum type core 21 makes one rotation, the distance between the plurality of conductors 24A and 24B wound around the core portion 22 is adjusted every rotation. be able to. Similarly, since the movement amount in the X direction of the nozzles 12 and 12 is set every time the drum type core 21 makes one rotation, winding of the conducting wires 24A and 24B wound around the core portion 22 every rotation is performed. The pitch can be adjusted. Here, the two conducting wires 24A and 24B are wound in a state of being separated from each other at a predetermined interval. The distance between the conducting wires 24A and 24B is the distance between the axes of the two conducting wires 24A and 24B. Say. Further, the winding pitch refers to an intermediate position between the axial positions of the two windings 24A and 24B of the nth winding when n is a natural number, and the axial position of the two conducting wires 24A and 24B of the (n + 1) th winding. The distance from the middle position.

  Even if the rotation angle of the nozzle holder 12A and the amount of movement of the nozzles 12 and 12 in the X direction are set to be constant and the winding is performed from the first winding to the predetermined winding, the winding is performed uniformly and cleanly for some reason. There may be a part that cannot be done. In such a case, the rotation angle of the nozzle holder 12A and the amount of movement of the nozzles 12 and 12 in the X direction at the number of windings that cannot be wound cleanly without being uniform are reset, and the winding is performed uniformly and cleanly as a whole. It can be in a state where it is left.

  Further, by increasing the tension after the second roll to obtain the second tension, the movement of the conducting wires 24A and 24B can be made to follow the movement of the nozzles 12 and 12. For this reason, it can wind in the state which isolate | separated between each conducting wire 24A, 24B at the desired space | interval equally. Moreover, the winding start position can be prevented from being shifted by setting the tension applied to the conductors 24A and 24B to the first winding as the first tension. The smaller the first tension value, the more effective the prevention of deviation.

  Next, as shown in FIG. 36, FIG. 37 and FIG. 5, the second line pressing part 15B of the line pressing member 15 is brought close to the other flange part 23 'of the drum type core 21, and the second line pressing part 15B. The second wire pressing convex portion 15D causes the two conductors 24A and 24B to be arranged at positions facing the two grooves 23a and 23b of the other flange portion 23 ', respectively, and in the later steps, the grooves 23a and 23b Are separated so that the two conductors 24A and 24B are not disposed in one of the two.

  Next, a 2nd arrangement | positioning process is performed. In the second arrangement step, as shown in FIG. 38, the nozzle holder 12A is moved in the negative direction of the Y axis and in the negative direction of the X axis, and is rotated counterclockwise. 39 and 40, the third wire pressing portion 15C of the line pressing member 15 approaches the other flange portion 23 'and presses and regulates the conductors 24A, 24B, and the other flange portion. The state where the conductors 24A and 24B are respectively disposed in the two grooves 23a and 23b of 23 'is maintained.

  Next, as shown in FIG. 41, the left finish side wire positioning pin 16A and the right finish side wire positioning pin 16B are projected in the + direction of the Z axis, respectively, and as shown in FIG. The nozzle holder 12A is moved approximately in the negative direction of the Y axis and rotated approximately 90 ° counterclockwise. Next, as shown in FIG. 43, the nozzle holder 12A is moved in the negative direction of the X axis, and one of the two conductive wires 24A and 24B is connected to the left finish side wire positioning pin 16A. Hook from above 43. Then, as shown in FIG. 44, the nozzle holder 12A is moved in the + direction of the Y axis, and the other of the two conductors 24A and 24B is hooked on the right finish side wire positioning pin 16B. The above is the second arrangement step.

  Next, a 2nd connection cutting process is performed. In the second connection cutting step, as shown in FIGS. 45 and 46, the heater chip 17 is directed vertically upward from below to the portion of the conductive wires 24A, 24B facing the electrodes 25A, 25B of the other flange portion 23 ′. As shown in FIG. 47, the second line pressing part 15B and the third line pressing part 15C of the line pressing member 15 are offset. Then, as shown in FIG. 48, the conductor chips 24A and 24B are pulse-heat bonded to the electrodes 25A and 25B of the other flange portion 23 ′ by the heater chip 17.

  49, the clamp 13 is moved to the position of the clamp 13 at the home position, and the nozzle holder 12A is moved to the position of the clamp 13 as shown in FIG. The conducting wires 24A and 24B are pinched and fixed.

  Next, as shown in FIGS. 51 and 52, the Z-axis side of the other flange portion 23 ′ of the drum type core 21 of the conducting wires 24 </ b> A and 24 </ b> B sandwiched between the chucks 11 by the cutter 18. As shown in FIG. 54, by cutting the two conductors 24A and 24B at the position of the other end of the conductors 24A and 24B with respect to the one end of the conductors 24A and 24B with respect to the position of the conductors 24A and 24B, as shown in FIG. The coil component 2 including the drum type core 21 around which the conductive wires 24A and 24B are wound is completed. The above is the second connection cutting step.

  Finally, as shown in FIG. 53, the nozzle holder 12A is moved to the position of the nozzle holder 12A in the home position, and the core holding portion 10 (FIG. 2) is rotated 180 ° on a plane including the X axis and the Y axis. Then, the completed coil component 2 is placed on a storage container (not shown), the holding by the chuck 11 is released, and the coil component 2 is put into the storage container. The above is the manufacturing method of the coil component.

  The method of manufacturing a coil component according to the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims. For example, in the present embodiment, the crossing step is performed in the first placement step, but it may be performed in at least one of the first placement step and the second placement step.

  In the steps shown in FIGS. 28 and 29, the nozzle holder 12A is moved in the positive direction of the X axis and in the negative direction of the Y axis and then rotated in the clockwise direction, but after being rotated in the clockwise direction. Thus, the nozzle holder 12A may be moved.

  In addition, the core part 22 of the drum type core 21 has a substantially square cross section cut by a plane perpendicular to the rotation axis of the drum type core 21, but is not limited to this shape. Moreover, it is not limited to a polygon. Further, although the conductors 24A and 24B are wound apart from each other at a predetermined interval, the conductors 24A and 24B may be wound while being in contact with adjacent conductors 24A and 24B without being spaced apart from each other.

  Moreover, the number of conducting wires is not limited to two. There may be a plurality of wires, for example, three conductive wires may be wound around a drum type core. Even in this case, in the crossing step, all the three conductive wires are crossed at one point in the vicinity of the connection position between the flange portion of the drum type core and the winding core portion 22, and the conductive wires are respectively positioned at positions facing the respective electrodes. Are placed one by one.

  The case where there are three conductors will be described as an example. As shown in FIGS. 55 (a) to 55 (c), the three conductors 124A, 124B, 124C fed from the three nozzles 120, 120, 120 are as follows. In the crossing step, the drum type core 121 is crossed at one point in the vicinity of the connection position between the flange portion 123 and the core portion 122. At this time, the three conducting wires 124A, 124B, and 124C are arranged at positions facing the three electrodes 125A, 125B, and 125C provided on one flange portion 123, respectively.

  Then, as shown in FIG. 55 (a), the conductors 124A, 124B, and 124C are pressed toward the drum type core 121 by the line holding member 115 similar to the line holding member 15 of the present embodiment, so that the grooves 123a, It may be arranged in 123b and 123c, or such a line pressing member 115 may not be used.

  Furthermore, the groove may not be formed in the flange portion of the drum type core. As an example, a case where three conductive wires are wound around a drum type core having a flange portion in which no groove is formed is shown in FIGS. 56 (a) to 56 (c). The top surface 223A provided with 225A, 225B, and 225C is a flat surface on which no groove is formed. Electrodes 225A, 225B and 225C are fixed on the flat surface, and at the position facing the electrodes 225A, 225B and 225C, three conducting wires 224A and 224B fed from the three nozzles 220, 220 and 220, 224C is arranged. In the crossing step, the three conducting wires 224A, 224B, 224C are crossed at one point in the vicinity of the connection position between the flange portion 223 of the drum type core 221 and the core portion 222.

  The coil component manufacturing apparatus 1 is provided with a guide member (not shown), and the guide member (not shown) includes three guide pins 215A, 215B, and 215C as shown in FIG. 56 (a). Guide pins 215A, 215B, and 215C correspond to guides. The guide pins 215A and 215C are disposed between the conductors 224A, 224B and 224C at positions closer to the flange 223 than the position where the three conductors 224A, 224B and 224C intersect each other.

  Further, the guide pin 215B is positioned on the side of the lead wire 125B drawn out when being wound around the core portion 222 in the drawing direction, that is, below the lead wire 125B shown in FIG. 56 (a). It is arranged at the position. In this way, by arranging the same number of guide pins 215A, 215B, 215C as the number of the conductive wires 224A, 224B, 224C, the conductive wires 224A, 224B, 224C can be crossed at one point. Further, by using the guide pins 215A, 215B, and 215C, the conductive wires 224A, 224B, and 224C can be wound apart from each other at a predetermined interval, thereby preventing mutual interference between the conductive wires 224A, 224B, and 224C. can do.

  Moreover, the connecting method of the conducting wire to the electrode is not limited to the method according to the present embodiment. Further, if the conducting wire can be reliably disposed in the groove of the flange portion of the drum type core, the first wire pressing portion 15A, the second wire pressing portion 15B, and the third wire pressing portion 15C are unnecessary, The wire pressing member 15 may not be provided in the coil component manufacturing apparatus.

  Further, in the above-described embodiment, the nozzle holder 12A may be rotated in the counterclockwise direction when the nozzle holder 12A is rotated in the clockwise direction, and may be rotated clockwise in the counterclockwise direction. It may be rotated. Moreover, although the direction which winds conducting wire 24A, 24B to the core part 22 of the drum type core 21 was the clockwise direction of the core part 22 shown by FIG. 33, a counterclockwise direction may be sufficient.

  The coil component of the present invention is useful in the field of common mode filters, and is particularly useful in the field of small high frequency common mode filters used for high-speed differential signal interfaces such as DVI and HDMI.

The perspective view which shows the coil components manufactured by the winding method of the coil components by this Embodiment. The top view which shows the manufacturing apparatus of the coil components for enforcing the manufacturing method of the coil components by this Embodiment. The side view which shows the manufacturing apparatus of the coil components for enforcing the manufacturing method of the coil components by this Embodiment. The schematic side view which shows the nozzle and nozzle holder of the manufacturing apparatus of the coil components for enforcing the manufacturing method of the coil components by this Embodiment. The principal part sectional drawing which shows the wire pressing member of the manufacturing apparatus of the coil components for enforcing the manufacturing method of the coil components by this Embodiment. The enlarged plan view which shows the state in which the drum type core of the coil components manufactured by the manufacturing method of the coil components by this Embodiment is clamped by the chuck | zipper. The schematic plan view which shows the state which has a nozzle holder in a nozzle home position position in the manufacturing method and winding method of the coil components by this Embodiment. The schematic top view which shows the state which the nozzle holder moved to the discard pin vicinity in the manufacturing method and winding method of the coil components by this Embodiment. The schematic top view which shows the state by which the conducting wire was thrown on the throwing pin in the manufacturing method and winding method of the coil components by this Embodiment. The schematic top view which shows the state by which the conducting wire was thrown on the throwing pin in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state by which the conducting wire was hooked on the left wire positioning pin in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state by which the conducting wire was hooked on the left wire positioning pin in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state by which the conducting wire was hooked on the left wire positioning pin and the left wire positioning pin in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state by which two conducting wires were made to cross | intersect in the manufacturing method and winding method of the coil components by this Embodiment. The enlarged plan view which shows the state by which two conducting wires were made to cross | intersect in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state which moved the nozzle holder to-direction of the Z-axis after two conducting wires were made to cross | intersect in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state by which the two conducting wires are pressed by the 1st wire pressing part in the manufacturing method of the coil components by this Embodiment, and the winding method. The enlarged plan view which shows the state by which the two conducting wires are pressed by the 1st wire holding | suppressing part in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state which the nozzle holder moved in the manufacturing method and winding method of the coil components by this Embodiment, with two conducting wires pressed by the 1st wire pressing part. The enlarged plan view which shows the state which the nozzle holder moved in the manufacturing method and winding method of the coil components by this Embodiment, with two conducting wires pressed with the 1st wire pressing part. The schematic plan view which shows the state by which the heater chip is pressed on the conducting wire in the manufacturing method and winding method of the coil components by this Embodiment. The enlarged plan view which shows the state by which the heater chip is pressed on the conducting wire in the manufacturing method and winding method of the coil components by this Embodiment. The schematic top view which shows the state by which the wire holding member was offset in the manufacturing method and winding method of the coil components by this Embodiment. The schematic top view which shows the state by which the conducting wire is pulse-heat-pressed on the electrode in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows a mode that two conducting wires were cut | disconnected by the cutter in the manufacturing method of the coil components by this Embodiment, and the winding method. The enlarged plan view which shows a mode that the two conducting wires were cut | disconnected by the cutter in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state by which the clamp was arrange | positioned in the position spaced apart from the nozzle holder in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state by which the nozzle was moved near the drum type core in the manufacturing method of the coil components by this Embodiment, and the winding method. The enlarged plan view which shows the state by which the nozzle was moved close to the drum type core in the manufacturing method of the coil components by this Embodiment, and the winding method. The enlarged side view which shows the state which has pressed the conducting wire to the 1st corner | angular of the core part by moving the nozzle to the negative direction of a Z-axis in the manufacturing method and winding method of the coil components by this Embodiment. The enlarged side view which shows the state which has pressed the conducting wire to the 1st corner | angular of the core part by moving the nozzle to the negative direction of a Z-axis in the manufacturing method and winding method of the coil components by this Embodiment. In the coil component manufacturing method and winding method according to the present embodiment, the drum type core is rotated by 90 ° after the conductive wire is pressed against the first corner of the core by moving the nozzle in the Z direction. FIG. The enlarged side view which shows the state which moved the nozzle to the + direction of the Z-axis in the manufacturing method and winding method of the coil components by this Embodiment. The schematic top view which shows the state which wound the conducting wire around the core part of the drum type core in the manufacturing method and winding method of the coil components by this Embodiment. The enlarged plan view which shows the state which wound the conducting wire around the core part of the drum type core in the manufacturing method and winding method of the coil components by this Embodiment. The schematic plan view which shows the state which isolate | separated two conducting wires in the 2nd wire holding | suppressing part in the manufacturing method and winding method of the coil components by this Embodiment. The enlarged plan view which shows the state which isolate | separated two conducting wires in the 2nd wire holding | suppressing part in the manufacturing method and winding method of the coil components by this Embodiment. In the manufacturing method of the coil components by this Embodiment, after separating two conducting wires in the 2nd wire pressing part, the schematic top view which shows the state which the nozzle holder moved. In the manufacturing method of the coil components by this Embodiment, the schematic plan view which shows the state by which the 2 conducting wire is pressed by the 3rd wire pressing part. In the manufacturing method of the coil components by this Embodiment, the enlarged plan view which shows the state in which two conducting wires are pressed by the 3rd wire pressing part. In the manufacturing method of the coil components by this Embodiment, the schematic plan view which shows the state which the left finish side wire positioning pin and the right finish side wire positioning pin protruded. In the manufacturing method of the coil components by this Embodiment, after the left finish side wire positioning pin and the right finish side wire positioning pin protrude, the schematic top view which shows the state which the nozzle holder moved. In the manufacturing method of the coil components by this Embodiment, the schematic plan view which shows the state by which the conducting wire was hooked on the left finish side wire positioning pin. In the manufacturing method of the coil components by this Embodiment, the schematic plan view which shows the state by which the conducting wire was hooked on the left finish side wire positioning pin and the right finish side wire positioning pin. In the manufacturing method of the coil components by this Embodiment, the schematic plan view which shows the state by which the heater chip is pressed on the conducting wire. The enlarged plan view which shows the state in which the heater chip is pressed on the conducting wire in the manufacturing method of the coil components by this Embodiment. The schematic top view which shows the state by which the wire pressing member is offset in the manufacturing method of the coil components by this Embodiment. In the manufacturing method of the coil components by this Embodiment, the schematic plan view which shows the state by which the conducting wire is pulse-heat-pressed on the electrode. In the manufacturing method of the coil components by this Embodiment, the schematic plan view which shows the state which the clamp has moved to the position near a nozzle holder. In the manufacturing method of the coil components by this Embodiment, the schematic plan view which shows the state by which two conducting wires were clamped by the clamp. The schematic plan view which shows a mode that two conducting wires were cut | disconnected by the cutter in the manufacturing method of the coil components by this Embodiment. The enlarged plan view which shows a mode that two conducting wires were cut | disconnected with the cutter in the manufacturing method of the coil components by this Embodiment. The schematic plan view which shows the state which the nozzle holder returned to the home position in the manufacturing method of the coil components by this Embodiment. The enlarged plan view which shows the state by which the nozzle holder returned to the home position and the conducting wire was wound around the drum type core in the manufacturing method of the coil components by this Embodiment. The top view which shows the drum type core by which three conducting wires are wound in the modification of the manufacturing method of the coil components by this Embodiment, and the winding method. The side view which shows the drum type core by which three conducting wires are wound in the modification of the manufacturing method of the coil components by this Embodiment, and the winding method. The front view which shows the drum type core by which three conducting wires are wound in the modification of the manufacturing method of the coil components by this Embodiment, and the winding method. The top view which shows the drum type core by which three conducting wires are wound and the groove | channel is not formed in the flange part in the modification of the manufacturing method of the coil components by this Embodiment, and the winding method. The side view which shows the drum type core by which three conducting wires are wound and the groove | channel is not formed in the flange part in the modification of the manufacturing method of the coil components by this Embodiment, and the winding method. The front view which shows the drum type core by which three conducting wires are wound and the groove | channel is not formed in the flange part in the modification of the manufacturing method of the coil components by this Embodiment, and the winding method.

Explanation of symbols

2 Coil parts 12, 112, 212 Nozzle 12A Nozzle holder 13 Clamp 21, 121, 221 Drum type cores 22, 122, 222 Core parts 23, 23 ', 123, 223 A pair of flange parts 23a, 23b, 123a, 123b, 123c Groove 24A, 24B, 124A, 124B, 124C, 224A, 224B, 224C Conductor 25A, 25B, 125A, 125B, 125C, 225A, 225B, 225C Electrode 215A, 215B, 215C Guide

Claims (5)

A coil component that includes a pair of flange portions and a core portion that connects the pair of flange portions to each other, and that winds and fixes at least two conductors on a drum type core provided with electrodes on each of the pair of flange portions. A manufacturing method of
At least two conducting wires each having one end fixed to the clamp are sequentially fed out from at least two nozzles of the movable nozzle holder, respectively, and are respectively placed at positions facing the respective electrodes of the one flange portion. A first arrangement step of arranging a conductor;
A first connection cutting step of connecting a portion of the conducting wire facing each electrode to the respective electrodes of the one flange portion, and cutting a portion of the one end side with respect to the connecting position of the conducting wire. When,
A winding step of winding each of the conducting wires around the core by moving the drum type core and the nozzle holder relative to each other;
A second disposing step of disposing the conducting wires at positions facing the respective electrodes of the other flange portion of the drum type core;
A second connecting line cutting step of connecting a portion of the conducting wire facing each electrode of the other flange portion and cutting a portion of the conducting wire closer to the nozzle than the connecting position of the conducting wire. And
At least one of the first arrangement step and the second arrangement step is such that all the conducting wires intersect at one point in the vicinity of the connection position between the flange portion and the core portion of the drum type core. A method of manufacturing a coil component, comprising: a crossing step of disposing one conductive wire at a position facing each of the electrodes.   2. The method of manufacturing a coil component according to claim 1, wherein in the crossing step, the substantially cross-shaped guides are respectively arranged between the conductive wires and the conductive wires intersect at one point in a state where the conductive wires are partitioned. .   At least one of the first arrangement step and the second arrangement step includes, after the crossing step, the nozzle and the drum type core so that all the conductors are pressed against the one flange portion. The method for manufacturing a coil component according to claim 1, further comprising a pressing step for relative movement.   4. The coil according to claim 3, wherein a groove corresponding to the number of the conductive wires is formed in each of the flange portions, and each of the conductive wires is disposed in each of the grooves in the pressing step. Manufacturing method of parts.   5. The pressing step according to claim 4, wherein in the pressing step, the conductor is arranged in each of the grooves by pressing the conductor in the direction of the flange portion of the drum type core. Manufacturing method of coil parts.

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