JP5281817B2 - Winding method and winding device for air-core coil - Google Patents

Abstract

The present invention provides a winding method and a winding device for an aircore coil, capable of finishing in a mode that a winding start lead part of the aircore coil alongs a side face winding part of a coil part. The method includes the following steps: a winding step of winding a wire rod (2) extending from a wire rod end holding member (winding lever 38) to a spinning jet (58) on a coil core (42) after crossing a lead guide groove (12); a winding step of rotating the coil core (42) and winding the wire rod (2) discharged from the spinning jet (58) on the coil core (42) to form a coil part (3); a cutting step of cutting the wire rod extending from the wire rod end holding member to the coil part (3) by a tool (83); a finishing step of pulling out the wire rod received in the lead guide groove (12) through a movable clamping plate (84) and finishing in a mode of alonging a side face winding part (3b) of the coil part (3); and a tearingout step of tearing out the coil core (42) from the coil part.

Description

  The present invention relates to an air core coil winding method and a winding apparatus.

  In general, an air-core coil has a coil portion in which a wire is wound in a spiral shape, a winding start lead portion made of a wire extending from the inner periphery of the coil portion, and a winding end lead portion made of a wire extending from the outer periphery of the coil portion (See Patent Document 1).

In a conventional winding device that forms this type of air-core coil, after winding a wire fed from a nozzle around a rotating core, excess wire is cut by a cutter, and a winding start lead portion and a winding end lead portion are provided. The winding work was completed in a state extending in the winding direction.
Japanese Patent Laid-Open No. 10-303015

  However, in the conventional winding device, the winding work was completed with the winding start lead portion and the winding end lead portion extending in the winding direction, so as a process before connecting the air-core coil to the substrate, Therefore, it is necessary to shape the winding start lead portion and the winding end lead portion so as to extend in a predetermined direction from the coil portion, and there is a problem that this shaping work takes time.

  The present invention has been made in view of the above problems, and provides an air-core coil winding method and a winding device that shape a winding start lead portion of an air-core coil so as to follow a side surface winding portion of the coil portion. The purpose is to do.

The present invention has a coil portion in which a wire is wound in a spiral shape, a winding start lead portion made of a wire extending from the inner periphery of the coil portion, and a winding end lead portion made of a wire extending from the outer periphery of the coil portion. In a coil winding method or winding apparatus for forming an air-core coil, a nozzle for feeding a wire, a wire end holding means for holding the tip of the wire fed from the nozzle, and a lead in which the wire extending from the wire end holding means is accommodated Use a guide groove, a winding core that rotates with the wire end holding means and the lead guide groove and winds the wire fed from the nozzle, a cutter that cuts the wire, and a clamp that holds and moves the wire, or these A wire rod end holding step for holding the tip of the wire rod fed from the nozzle to the wire rod end holding means, and a wire rod extending from the wire rod end holding means to the nozzle A winding process in which the coil is wound around the winding core through the lead guide groove, a winding process in which the wire is fed from the nozzle by rotating the winding core to form a coil portion; A cutting process for cutting the wire extending to the part, a winding start lead part shaping process for pulling out the wire material that fits in the lead guide groove by moving the clamp, and shaping it along the side winding part of the coil part, and the coil part There line and extracting step of extracting the core from the lead guide groove has a lead portion guide means defining a gap of wedge-shaped cross section which is wire inserted between the winding core, the winding through the lead guide channel at over turning step shall wire wrapped around the core is characterized by being configured to press the base end portion of the winding start lead portion by engaging the lead portion guide means to the winding core .

  According to the present invention, it is possible to automatically form an air-core coil shaped so that the winding start lead portion is along the side surface winding portion of the coil portion, and there is no need to manually shape the winding start lead portion. , Increase productivity.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1A is a side view of the air-core coil 1, and FIG. 1B is a cross-sectional view taken along line AA of FIG. The air-core coil 1 is used as a component that drives an arm of a hard disk device, for example.

  The air-core coil 1 includes a coil part 3 in which a wire 2 is wound in a trapezoidal spiral shape, a winding start lead part 4 composed of a wire 2 extending from the inner periphery of the coil part 3, and a wire extending from the outer periphery of the coil part 3 2 and a winding end lead portion 5 made of two.

  The surface of the wire 2 is coated with a fusion layer, and the fusion layer is heated and melted when the coil portion 3 is wound to solidify after being melted, whereby the shape of the coil portion 3 is maintained.

  The winding start lead portion 4 and the winding end lead portion 5 are shaped so as to extend from the winding center axis O of the coil portion 3 side by side in the radial direction.

  The winding start lead portion 4 is bent from the inner circumferential winding portion 3 a of the coil portion 3 and extends along the side surface winding portion 3 b of the coil portion 3.

  The winding end lead portion 5 is bent from the outer peripheral winding portion 3 c of the coil portion 3 and extends substantially parallel to the winding start lead portion 4 with a predetermined interval.

  The surface of the wire 2 is coated with an insulating layer, but the insulating layer is peeled off from the leading end of the winding start lead portion 4 and the leading end of the winding end lead portion 5, for example, a process of assembling to a hard disk device. In this way, it is connected to a board provided in the hard disk device by soldering or the like.

  FIG. 2 is a perspective view showing a schematic configuration of the winding device 10 forming the air-core coil 1. Here, three axes X, Y, and Z orthogonal to each other are set, the X axis extends in a substantially horizontal lateral direction, the Y axis extends in a substantially horizontal front-rear direction, and the Z axis extends in a substantially vertical direction. The configuration will be described.

  First and second spindles 20 and 30 that rotate on the same X axis are provided on the gantry 11, and first and second winding jigs 40 and 35 are attached to the first and second spindles 20 and 30, As will be described later, the coil portion 3 is formed by winding the wire 2 via the first and second winding jigs 40 and 35.

  The first spindle 20 is rotatably supported by the first head 21 and is rotationally driven by a first spindle motor 22 via a belt 23 and a pulley.

  The first head 21 is supported on the gantry 11 via a linear guide 24 so as to be movable in the X-axis direction, and is driven by the moving device 25 so as to move in the X-axis direction.

  The moving machine 25 includes a ball screw 28 that is rotationally driven by a servo motor 27, a follower 29 that is screwed into the ball screw 28 and moves in parallel.

  The second spindle 30 is rotatably supported by the second head 31 and is rotationally driven by a second spindle motor 32 via a belt 33 and a pulley. The second head 31 is fixed on the gantry 11.

  As shown in FIG. 3, the winding core 42 protrudes from the jig end surface 41 of the first winding jig 40, while the concave portion 37 that opens to the jig end surface 36 is formed in the second winding jig 35. When the first spindle 20 is moved in the X-axis direction by the moving device 25 and approaches the second spindle 30, the tip end portion 42 a of the core 42 is fitted into the recess 37.

  The cross section of the winding core 42 and the concave portion 37 is formed in a substantially trapezoidal shape and is along the inner peripheral cross-sectional shape of the coil portion 3. It is good also as a shape.

  The winding core 42 is supported so as to be movable in the X-axis direction with respect to the first winding jig 40, and is configured to protrude from the jig end surface 41 so as to protrude and retract. A rod 43 is connected to the winding core 42, and the first winding jig 40 and the first spindle 20 have a hollow structure through which the winding core 42 and the rod 43 penetrate, and protrude from the first spindle 20 of the rod 43. The end is connected to the follower 49 of the mobile unit 45 via a bearing 46. The moving device 45 includes a ball screw 48 that is rotationally driven by a servo motor 47 and a follower 49 that is screwed into the ball screw 48 to move in parallel. The rod 43 is moved in the X-axis direction via the follower 49. To do. The winding core 42 is switched between a winding position that protrudes from the jig end surface 41 and a retracted position that is retracted so as not to protrude from the jig end surface 41 by the operation of the moving device 45.

  On the gantry 11, a nozzle base 50 is provided that moves in the three-axis directions of X, Y, and Z by moving machines 51, 52, and 53. The mobile device 51 moves the X-axis direction moving table 56 in the X-axis direction with respect to the gantry 11. The mobile device 52 moves the Y-axis direction moving table 57 in the Y-axis direction with respect to the X-axis direction moving table 56. The moving machine 53 moves the nozzle table 50 in the Z-axis direction with respect to the Y-axis direction moving table 57. The mobile units 51, 52, and 53 are configured by a ball screw that is rotationally driven by a servo motor and a follower that is screwed into the ball screw to move in parallel.

  A nozzle 58 is fixed to the nozzle base 50, and the wire 2 is supplied to the nozzle 58 from a wire supply source (not shown).

  The nozzle base 50 is provided with a coating peeling machine 59. The coating peeling machine 59 covers the fusion layer and the insulating layer within a predetermined range from the wire 2 by a cutter that rotates around the wire 2 based on a command from the controller. This is to be peeled off, and this has been filed by the present applicant as Japanese Patent Application No. 2000-216443.

  The nozzle base 50 is provided with a wire rod presser 55. The wire rod presser 55 clamps the wire 2 via a presser member that moves by a cylinder based on a command from the controller, and the wire 2 does not come out of the nozzle 58. Like that.

  The nozzle base 50 is provided with a cutter 61 movably in the Z-axis direction via a cylinder 62. The cutter 61 cuts the wire 2 based on a command from the controller.

  A wire guide 63 is provided on the nozzle base 50 via a cylinder 64 so as to be movable in the Z-axis direction. As shown in FIG. 9 (10), the wire rod guide 63 guides the wire rod 2 between two guide rods 65 extending in the Z-axis direction. The distance between the two guide rods 65 is set to be larger than the outer diameter of the wire rod 2 by a predetermined clearance so that the wire rod 2 fed out from the nozzle 58 passes between the guide rods 65 smoothly. Thereby, since the interval between the two guide bars 65 is set smaller than the opening diameter of the nozzle 58, the wire 2 can be guided with high accuracy by guiding the wire 2 through the two guide bars 65. In addition, the speed at which the wire 2 is wound can be increased.

  The wire rod guide 63 is switched between a winding position where the wire rod 2 is guided between the guide rods 65 through the wire rod 2 and a retracted position where each guide rod 65 is separated downward from the wire rod 2 by operation of the cylinder 64.

  On the gantry 11, a forming table 80 is provided that moves in the three-axis directions of X, Y, and Z by the mobile devices 71, 72, and 73. The mobile device 71 moves the X-axis direction moving table 76 in the X-axis direction with respect to the gantry 11. The moving device 72 moves the Y-axis direction moving table 77 in the Y-axis direction with respect to the X-axis direction moving table 76. The moving machine 73 moves the forming table 80 in the Z-axis direction with respect to the Y-axis direction moving table 77. The mobile units 71, 72, and 73 are configured by a ball screw that is rotationally driven by a servo motor, a follower that is screwed into the ball screw and moved in parallel.

  A forming plate 81, a clamp 84, a cutter 83, and a discharger 85 are attached to the forming table 80, and work such as cutting and shaping of the winding start lead portion 4 and the winding end lead portion 5 is performed as will be described later. ing.

  A hot air blower 90 is provided on the gantry 11, and the hot air blower 90 blows out hot air based on a command from the controller, and heats the fusion layer coated on the wire 2 when the coil portion 3 is wound. It is designed to melt.

  As shown in FIG. 3, the second winding jig 35 has a concave portion 37 opened in the jig end surface 36, and the first spindle 20 moves in the X-axis direction. The tip end portion 42 a of the core 42 is fitted into the recess 37.

  As a wire end holding means for holding the tip end portion of the wire 2, a binding rod 38 is provided on the second winding jig 35. A slit 39 is formed at the tip of the binding rod 38. As shown in FIGS. 5 (a) and 5 (b), the wire 2 is passed through the slit 39 and thereby the second winding jig 35 is wound. In contrast, the tip of the wire 2 is held.

  The second winding jig 35 is formed with a lead guide groove 12 in which the wire 2 that becomes the lead portion 4 at the start of winding is accommodated. The lead guide groove 12 extends from the vicinity of the binding rod 38 to the concave portion 37 so that the wire 2 extending from the binding rod 38 to the winding core 42 is accommodated when the coil portion 3 is wound.

  The lead guide groove 12 has two planar groove side surfaces 13 extending in parallel to a plane including the winding center axis O (the rotation center axis of the second winding jig 35), and the opening width thereof is the wire 2. Is set larger than the outer diameter by a predetermined clearance.

  The lead guide groove 12 has a pair of lead guide groove opening edges 14, and the lead guide groove opening edges 14 define a wedge-shaped gap in cross section where the wire 2 enters between the winding cores 42. As shown in FIGS. 5 (a) and 5 (b), the wire 2 is guided to be pressed against the core 42 at the part that is the base end of the lead part 4 at the beginning of winding.

  The lead guide groove opening edge 14 is formed to be inclined with respect to the groove side surface 13. In other words, the lead guide groove opening edge portion 14 is inclined with respect to the plane including the winding center axis O, and defines a gap having a wedge-shaped cross section between the winding cores 42.

  Since a pair of lead guide groove opening edges 14 are formed at the opening ends of the lead guide grooves 12, one of the lead guide groove opening edges 14 winds the wire 2 even if the rotation direction of the winding core 42 is changed. 42 is pressed against.

  If the direction of rotation of the winding core 42 is not changed, one lead guide groove opening edge 14 may be formed only on the side where the wire 2 at the opening end of the lead guide groove 12 is wound.

  Further, as the lead portion guiding means, the groove side surface 13 of the lead guide groove 12 may be formed so as to be inclined with respect to a plane including the winding center axis O. In this case, the groove side surface 13 of the lead guide groove 12 defines a wedge-shaped gap in which the wire 2 enters between the cores 42, and the portion that becomes the proximal end of the lead portion 4 at the beginning of winding of the wire 2 is defined as the core 42. Guide them to press.

  When the angle of inclination of the wire 2 extending from the binding rod 38 through the lead guide groove 12 to the nozzle 58 in the wire rod winding process with respect to the winding center axis O (X axis) increases, the wire 2 is opened to the lead guide groove. It becomes difficult to engage with the edge 14.

  In response to this, the binding bar 38 is provided at a predetermined distance from the jig end surface 36 (core 42) in the winding center axis O (X axis) direction. The angle at which the wire 2 extending from the bar 38 through the lead guide groove 12 to the core 42 is inclined with respect to the winding center axis O (X axis) is set to be sufficiently small, and the nozzle 58 is moved and entangled. The wire 2 that is wound from the rod 38 through the lead guide groove 12 to the core 42 enters a wedge-shaped gap formed between the lead guide groove opening edge 14 and the core 42. Yes.

  The jig end surface 36 of the second winding jig 35 and the jig end surface 41 of the first winding jig 40 are formed in a planar shape orthogonal to the winding center axis O (X axis).

  The second winding jig 35 is formed with an inclined surface 15 inclined with respect to the winding center axis O (X axis), and the lead guide groove 12 is opened in the inclined surface 15. Due to the inclined surface 15, the portion where the lead guide groove 12 is opened in the second winding jig 35 is tapered, and the wire 2 extending from the binding bar 38 to the nozzle 58 in the wire winding process is used as the lead guide. It is easy to enter the groove 12.

  The controller includes each servo motor of each mobile unit 25, 45, 51, 52, 53, 71, 72, 73, first and second spindle motors 22, 32, coating stripper 59, cylinders 62, 64, cutter 61, The operations of the clamp 84, the cutter 83, etc. are sequence-controlled, and the air core coil 1 is automatically formed by winding the wire 2 around the first and second winding jigs 40, 35.

  The winding device 10 performs the following steps in order to form the air-core coil 1. Hereinafter, the operation of the winding apparatus 10 will be described with reference to FIGS.

  As shown by the arrow in FIG. 6 (1), the first winding jig 40 is moved closer to the second winding jig 35 by the moving device 25, and the tip end portion 42 a of the winding core 42 is fitted into the recess 37. Let

  At this time, the interval between the jig end surface 41 of the first winding jig 40 and the jig end surface 36 of the second winding jig 35 is set according to the winding width of the air-core coil 1. The interval between the jig end faces 41 and 36 is arbitrarily set within a range larger than the outer diameter of the nozzle 58 so that the nozzle 58 is inserted between the jig end faces 41 and 36.

  As indicated by the arrows in (2), the first and second spindles 20 and 30 rotate the first and second winding jigs 40 and 35 by 90 ° and direct the binding rod 38 toward the nozzle 58.

  (3) As shown by arrows in FIG. 7 (4), the nozzles 58 are moved by the respective mobile units 51, 52, 53, the wire 2 is entangled with the tie rod 38, and the wire rod is passed from the slit 39 to the nozzle 58. 2 is extended. Thereby, the tip of the wire 2 is held at a predetermined position with respect to the second winding jig 35.

  The above operation is performed as a wire end holding step of holding the tip end portion of the wire 2 fed from the nozzle 58 to the wire end holding means (the binding rod 38).

  As indicated by the arrow in (5), the nozzle 58 is moved along the lead guide groove 12 in the X-axis direction.

  As indicated by the arrow in (6), the nozzle 58 is moved in the Y-axis direction, the tip of the nozzle 58 is inserted between the jig end surfaces 41 and 36, and the wire 2 extending from the binding rod 38 to the nozzle 58 is shown. Is passed through the lead guide groove 12.

  The slit 39 of the binding rod 38 is disposed on the extension line of the lead guide groove 12, and the wire 2 extending from the slit 39 to the nozzle 58 enters the lead guide groove 12. The wire rod 2 is not limited to this, and the slit 39 of the binding rod 38 is offset with respect to the extension line of the lead guide groove 12 and is engaged with the slit 39 to extend from the outer periphery of the binding rod 38 to the nozzle 58. May be configured to enter the lead guide groove 12.

  As indicated by an arrow in FIG. 8 (7), the nozzle 58 is moved in the Z-axis direction between the jig end faces 41 and 36, and the wire 2 extending to the nozzle 58 through the lead guide groove 12 is moved to the lead guide groove. A gap having a cross-sectional wedge shape defined between the opening edge 14 and the core 42 is inserted (see FIGS. 5A and 5B).

  At this time, the wire 2 enters the gap having a cross-sectional wedge shape defined between the lead guide groove opening edge 14 and the core 42, thereby pressing the wire 2 against the core 42, and the wire 2 is lifted from the core 42. Do not.

  The above operation is performed as a winding process in which the wire 2 extending from the wire end holding means (the binding rod 38) to the nozzle 58 is wound around the core 42 through the lead guide groove 12.

  As indicated by the arrows in (8), the first and second spindles 20 and 30 are used to rotate the first and second winding jigs 40 and 35 while winding the wire 2 fed from the nozzle 58 around the core 42. The nozzle 58 is moved in the Y-axis direction so that the tip of the nozzle 58 comes out between the jig end faces 41 and 36.

  Subsequently, the moving device 25 moves the first winding jig 40 so as to approach the second winding jig 35, narrows the distance between the jig end surfaces 41, 36, and the wire 2 wound around the core 42. Is moved along the jig end surface 41. At this time, a gap larger than the outer diameter of the wire 2 by a predetermined clearance is defined between the jig end surfaces 41 and 36, and the first wire 2 is wound with high accuracy.

  As indicated by arrows in (9), the nozzle 58 is moved in the X-axis direction in synchronization with the rotation of the first and second winding jigs 40 and 35, and the first winding jig 40 is moved in the X-axis direction. To do. When the first coil is wound around the core 42, the wire 2 is wound by being guided by the jig end face 41 of the first winding jig 40, and the first winding jig 40 that has already been wound is wound. The wire 2 is wound with high accuracy while being guided by the jig end surface 41.

  While the first layer coil is wound in this way, the wire 2 is guided to the already wound coil and the jig end surface 41 and aligned and wound around the core 42.

  As indicated by arrows in FIG. 9 (10), the first and second winding jigs 40 and 35 are rotated, and the wire 2 fed from the nozzle 58 is passed through the guide rods 65 to pass the wire 2 into the first layer. The coil portion 3 is formed by winding the wire 2 on the coil, winding the wire 2 with the second layer, the third layer, and a predetermined number of turns.

  As shown in (10), when the second layer coil is wound, the wire rod guide 63 is moved to the upper winding position, and the wire rod 2 is passed between the guide rods 65. Each guide bar 65 moves in the Y-axis direction in synchronization with the rotation of the first and second spindles 20 and 30 together with the nozzle 58, accurately guides the wire 2 inserted through each guide bar 65, and increases the winding speed. However, the wire 2 can be aligned and wound. Of course, the wire 2 may be guided between the guide rods 65 even when the first layer coil is wound.

  The above operation is performed as a winding process in which the coil 42 is formed by rotating the core 42 and winding the wire 2 fed from the nozzle 58 around the core 42.

  As shown in (11), when the coil portion 3 is formed by winding the wire 2 with a predetermined number of turns, the first and second winding jigs 40 and 35 are rotated at the rotational position where the binding rod 38 faces downward. Stop rotating.

  As indicated by arrows in (9), (10), and (11), when the wire 2 is wound, hot air is blown from the hot air blower 90, and the fusion layer coated on the wire 2 is heated. When the wire 2 that is melted and forms the coil portion 3 is welded via the fusion layer, and the wire portion 2 is wound with a predetermined number of turns to form the coil portion 3, hot air blows out from the hot air blower 90 Stop and harden the fusion layer.

  As indicated by an arrow in (11), the nozzle 58 is retracted in the Y-axis direction, and the wire 2 extending from the coil portion 3 is pulled out by a predetermined length.

  As indicated by arrows in (12), the first and second winding jigs 40 and 35 are rotated by 90 °, and stopped at a position where the binding rod 38 and the lead guide groove 12 face the nozzle 58. Thereby, the wire 2 extended from the nozzle 58 to the coil part 3 loosens.

  As shown by the arrow in (13) of FIG. 10, after the forming plate 81 is moved and the tip portion 82 of the forming plate 81 is brought into contact with the coil portion 3, the nozzle 58 is retracted in the Y-axis direction, As shown in FIGS. 1A and 1B, the wire 2 extending from the coil portion 3 is bent so as to be substantially orthogonal to the wire 2 wound around the coil portion 3, and the winding end lead portion 5 Perform shaping.

  The above operation is performed as a shaping step of the winding end lead portion 5 that shapes the wire 2 extending from the coil portion 3 by moving the nozzle 58 in a state where the forming plate 81 is in contact with the coil portion 3.

  As shown in FIGS. 15A and 15B, the tip 82 of the forming plate 81 is bent and wound around the coil 3 so as to go around the wire 2 extending from the coil 3. The wire 2 is pressed down.

  Further, when the winding direction of the coil part 3 is reversed, as shown in FIGS. 16A and 16B, the coil part 3 is formed on the coil part 3 by using a forming plate 81 whose tip 89 is formed in a flat plate shape. You may make it hold | suppress the wound wire 2. FIG.

  As indicated by an arrow in (14), the forming plate 81 is moved away from the coil portion 3.

  As indicated by the arrow in (15), the cutter 83 is moved closer to the wire 2.

  As shown in FIG. 11 (16), the wire 2 is cut by the cutter 83.

  As indicated by the arrows in (17), the first and second winding jigs 40 and 35 are rotated by 90 °, and the binding rod 38 and the lead guide groove 12 are stopped at a position facing upward.

  (18) The cutter 83 and the clamp 84 are moved closer to the wire 2 as indicated by arrows in (19).

  As shown in FIG. 12 (19), the wire 2 extending from the binding rod 38 to the coil portion 3 is clamped by the clamp 84, and the wire 2 is cut by the cutter 83.

  The above operation is performed as a cutting step of cutting the wire 2 extending from the wire end holding means (the binding rod 38) to the coil portion 3 by the cutter 83.

  As shown by the arrow in (20), the cutter 83 is moved away from the wire 2.

  As indicated by an arrow in (21), the clamp 84 is moved with an arcuate locus while holding the wire 2 and the wire 2 extending from the coil portion 3 is pulled out from the lead guide groove 12, and FIG. As shown in (b), the wire 2 is bent from the inner periphery winding portion 3a of the coil portion 3, and is extended along the side surface winding portion 3b of the coil portion 3, and the winding start lead portion 4 is shaped.

  The above operation is performed as a shaping process of the winding start lead portion 4 that moves the clamp 84 to draw out the wire 2 that fits in the lead guide groove 12 and shapes it along the side surface winding portion 3 b of the coil portion 3.

  As indicated by an arrow in (22) of FIG. 13, the clamp 84 is moved away from the wire 2 and the cutter 83 is lowered.

  As indicated by the arrow in (23), the first and second winding jigs 40 and 35 are rotated by 90 °, and the winding is stopped at a position where the wire 2 that becomes the winding lead portion 4 faces the nozzle 58. Subsequently, the wire 2 is cut by the cutter 83, and the winding start lead portion 4 having a predetermined length is formed.

  As a result, the air-core coil 1 is completed, and the winding start lead portion 4 and the winding end lead portion 5 are respectively connected to the winding center axis O of the coil portion 3 as shown in FIGS. Are formed so as to extend in substantially the same length along the radial direction.

  At the leading end portions of the winding start lead portion 4 and the winding end lead portion 5, the coating layer and the insulating layer are peeled off by the coating peeling machine 59.

  As indicated by an arrow in (24), the first winding jig 40 is moved away from the second winding jig 35 by the moving device 25, and the ejector 85 is moved closer to the first winding jig 40.

  As indicated by an arrow in (25) of FIG. 14, the winding core 42 is pulled from the jig end surface 41 by the moving device 45 to remove the winding core 42 from the coil portion 3, and the discharger 85 follows the winding core 42. And the rod-shaped tip of the ejector 85 is inserted inside the coil 3. Thereby, the air-core coil 1 removed from the first winding jig 40 is transferred to the ejector 85.

  The above operation is performed as an extraction process for extracting the core 42 from the coil portion 3.

  The ejector 85 is not limited to this structure, and may be configured to include a suction nozzle that attracts the air-core coil 1 by negative pressure.

  As indicated by an arrow in (26), the ejector 85 that has received the air-core coil 1 is moved, and the air-core coil 1 is hung on a stock rod (not shown) and stocked.

  By performing the above steps in order, the air-core coil 1 is automatically formed, and it becomes unnecessary to manually shape the winding start lead portion 4 and the winding end lead portion 5, thereby improving productivity.

  As shown in FIGS. 1A and 1B, the air-core coil 1 is shaped so that the winding start lead portion 4 and the winding end lead portion 5 extend substantially in parallel with a predetermined interval. The operation of soldering the lead part 4 and the winding end lead part 5 to the substrate is performed efficiently.

  In the present embodiment, the coil portion 3 in which the wire 2 is spirally wound, the winding start lead portion 4 made of the wire 2 extending from the inner periphery of the coil portion 3, and the wire 2 extending from the outer periphery of the coil portion 3. In a coil winding method or winding device 10 for forming an air-core coil 1 having a winding end lead portion 5, a nozzle 58 that feeds the wire 2 and a wire rod that holds the tip of the wire 2 fed from the nozzle 58. The end holding means (the binding rod 38), the lead guide groove 12 in which the wire 2 extending from the wire end holding means (the binding rod 38) is received, and the wire end holding means (the binding rod 38) and the lead guide groove 12 are rotated. Then, the core 42 for winding the wire 2 fed from the nozzle 58, the cutter 83 for cutting the wire 2, and the clamp 84 for holding and moving the wire 2 are used, or provided with these. The wire rod end holding step (the binding rod 38) holds the tip end of the wire rod 2 fed out from the cable 58, and leads the wire rod 2 extending from the wire rod end holding means (the binding rod 38) to the nozzle 58. A winding step of winding around the core 42 through the guide groove 12, a winding step of rotating the core 42 and winding the wire 2 fed from the nozzle 58 around the core 42 to form the coil portion 3, and a cutter 83 A cutting step of cutting the wire 2 extending from the wire end holding means (the binding rod 38) to the coil portion 3 by the above, and by moving the clamp 84, the wire 2 that fits in the lead guide groove 12 is pulled out and the side surface of the coil portion 3 The winding start lead portion 4 is shaped so as to be shaped along the winding portion 3b, and the winding step is performed to extract the winding core 42 from the coil portion 3.

  Based on the above configuration, it is possible to automatically form the air-core coil 1 shaped so that the winding start lead portion 4 is along the side surface winding portion 3b of the coil portion 3, and the winding start lead portion 4 is manually formed. There is no need to reshape, increasing productivity.

  In the present embodiment, the lead guide groove 12 has lead portion guide means (lead guide groove opening edge portion 14) that defines a wedge-shaped gap in which the wire 2 enters between the winding cores 42. The wire rod 2 wound around the core 42 through the lead guide groove 12 engages with the lead portion guide means (lead guide groove opening edge portion 14) to press the proximal end portion of the lead portion 4 against the core 42. The configuration.

  Based on the above configuration, when the wire 2 is engaged with the lead portion guide means (lead guide groove opening edge portion 14), the nozzle 58 is moved to move from the binding rod 38 through the lead guide groove 12 to the core 42. The wire 2 to be wound around is wound without lifting from the core 42, and the wire 2 in the inner peripheral winding portion 3 a of the coil portion 3 is aligned and wound, and the winding start lead portion 4 is connected to the coil portion 3. The space factor of the wire 2 in the air-core coil 1 can be increased by bending from the inner peripheral winding portion 3a and extending along the side surface winding portion 3b of the coil portion 3.

  In the present embodiment, a forming plate 81 that moves with respect to the core 42 is provided, and the wire 2 that extends from the coil portion 3 is shaped by moving the nozzle 58 in a state where the forming plate 81 is in contact with the coil portion 3. It is set as the structure which performs the shaping process of the winding end lead part 5 to perform.

  Based on the above configuration, it becomes possible to automatically form the air-core coil 1 shaped so that the winding end lead portion 5 bends and extends from the outer peripheral winding portion 3c of the coil portion 3, and the winding end lead portion 5 is Productivity can be improved by eliminating the need for manual shaping.

  In the present embodiment, a wire guide 63 that guides through the wire 2 fed from the nozzle 58 is arranged between the nozzle 58 and the core 42 in the winding process, and the wire guide 63 is moved together with the nozzle 58.

  Based on the above configuration, the wire 2 wound around the core 42 is accurately guided by the wire guide 63, and the wire 2 can be aligned and wound even when the winding speed is increased.

  The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.

The side view and sectional drawing of the air-core coil which show embodiment of this invention. The perspective view of a winding device similarly. Similarly, the perspective view of a 1st, 2nd winding jig. Similarly, the perspective view of a 1st, 2nd winding jig. Similarly, the perspective view and sectional drawing of a 1st, 2nd winding jig. The perspective view which similarly shows operation | movement of a winding apparatus. The perspective view which similarly shows operation | movement of a winding apparatus. The perspective view which similarly shows operation | movement of a winding apparatus. The perspective view which similarly shows operation | movement of a winding apparatus. The perspective view which similarly shows operation | movement of a winding apparatus. The perspective view which similarly shows operation | movement of a winding apparatus. The perspective view which similarly shows operation | movement of a winding apparatus. The perspective view which similarly shows operation | movement of a winding apparatus. The perspective view which similarly shows operation | movement of a winding apparatus. The side view and front view of a forming board etc. similarly. The side view and front view, such as a forming board which shows other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air core coil 2 Wire material 3 Coil part 3a Inner circumference winding part 3b Side surface winding part 3c Outer circumference winding part 4 Winding start lead part 5 Winding end lead part 10 Winding apparatus 12 Lead guide groove 14 Lead guide groove opening edge (lead part) Guide means)
35 Second winding jig 36 Jig end face 37 Concave portion 38 Binding rod (wire end holding means)
40 First Winding Jig 42 Winding Core 58 Nozzle 59 Cover Peeling Machine 81 Forming Plate 83 Cutter 84 Clamp 85 Ejector 90 Hot Air

Claims (4)

A coil portion in which a wire is wound in a spiral shape;
A winding start lead portion extending from the inner periphery of the coil portion;
In the winding method of the air-core coil that forms an air-core coil having a winding end lead portion extending from the outer periphery of the coil portion,
A nozzle for feeding out the wire,
Wire rod end holding means for holding the tip of the wire rod fed from the nozzle;
A lead guide groove for receiving the wire extending from the wire end holding means;
A core for rotating the wire rod end holding means and the lead guide groove and winding the wire rod fed from the nozzle;
A cutter for cutting the wire,
Using a clamp that holds and moves the wire,
A wire end holding step of holding the tip end of the wire drawn from the nozzle in the wire end holding means;
A winding step in which the wire extending from the wire end holding means to the nozzle is wound around the core through the lead guide groove;
A winding step of rotating the winding core and winding the wire fed from the nozzle to the winding core to form the coil portion;
A cutting step of cutting the wire extending from the wire end holding means to the coil portion by the cutter;
The step of shaping the winding start lead portion for drawing the wire material that fits in the lead guide groove by moving the clamp and shaping it along the side surface winding portion of the coil portion;
There line and extracting step of extracting the winding core from the coil portion,
The lead guide groove has a lead portion guide means that defines a cross-sectional wedge-shaped gap into which the wire enters between the winding cores,
Pressing the base end portion of the winding start lead portion against the core by engaging the lead portion guiding means with the wire rod that is wound around the core through the lead guide groove in the winding step. The winding method of the air-core coil which is characterized. A coil portion in which a wire is wound in a spiral shape;
A winding start lead portion extending from the inner periphery of the coil portion;
In the winding method of the air-core coil that forms an air-core coil having a winding end lead portion extending from the outer periphery of the coil portion,
A nozzle for feeding out the wire,
Wire rod end holding means for holding the tip of the wire rod fed from the nozzle;
A lead guide groove for receiving the wire extending from the wire end holding means;
A core for rotating the wire rod end holding means and the lead guide groove and winding the wire rod fed from the nozzle;
A cutter for cutting the wire,
A clamp that moves while holding the wire,
A wire end holding step of holding the tip end of the wire drawn from the nozzle in the wire end holding means;
A winding step in which the wire extending from the wire end holding means to the nozzle is wound around the core through the lead guide groove;
A winding step of rotating the winding core and winding the wire fed from the nozzle to the winding core to form the coil portion;
A cutting step of cutting the wire extending from the wire end holding means to the coil portion by the cutter;
The step of shaping the winding start lead portion for drawing the wire material that fits in the lead guide groove by moving the clamp and shaping it along the side surface winding portion of the coil portion;
A configuration for performing the extraction step of extracting the winding core from the coil portion ,
The lead guide groove has a lead portion guide means that defines a cross-sectional wedge-shaped gap into which the wire enters between the winding cores,
A configuration in which the wire rod that is wound around the core through the lead guide groove in the winding step presses the proximal end portion of the winding start lead portion against the core by engaging the lead portion guiding means; An air core coil winding device characterized by that. A forming plate that moves relative to the core;
The winding end lead portion is shaped by shaping the wire extending from the coil portion by moving the nozzle while the forming plate is in contact with the coil portion. The winding device of the air-core coil of 2 . A wire rod guide for guiding through the wire rod fed from the nozzle in the winding step is disposed between the nozzle and the core, and the wire rod guide is moved together with the nozzle. Item 4. The winding device for an air-core coil according to Item 2 or 3 .

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