JP2015228393A - Coil manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil manufacturing device capable of accurately molding a coil in accordance with a core material whose cross section has a substantially rectangular shape.SOLUTION: A coil manufacturing device 1 includes: a core material 2 which is supported by a core material support mechanism 3 and is made to be rotated around a shaft by a servo motor 10; a pressing mechanism 15 which makes pressing force acted on a conductor D by pressing two pressing rollers to the conductor wound around the core material 2; and the like. According to this coil manufacturing device 1, two pressing rollers are brought into a state pressed to the conductor while holding the corner of the core material 2, and bending moment using the corner as a fulcrum is acted, thereby the conductor is plastically deformed along the corner of the core material 2 and a coil whose cross section has a substantially rectangular shape is molded.

Description

  The present invention relates to an apparatus for manufacturing a coil formed by winding a conductor, and more particularly to a coil manufacturing apparatus capable of forming a coil having a substantially rectangular cross section.

  Conventionally, a coil is made of a thin and linear conductor with good workability (easy to bend), and a core material called a bobbin for forming the coil, a mechanism for rotating the core material, and tension is applied to the conductor. It was formed by winding a tensioned conductor around a core material using a device equipped with a mechanism or the like.

  However, in recent years, in addition to conductors with good processability, conductors with poor processability (hard to bend) such as thick wire conductors and thick strip conductors have been used as coil materials. When manufacturing a coil having a substantially rectangular cross section using such a poorly workable conductor as the material, since the workability of the conductor is poor, the linear portion of the coil bulges. The coil had to be molded while the conductor was plastically deformed along the corner by correcting the corner around the core with a hammer or the like so that the swollen portion would not occur. . Therefore, a great deal of labor is required to correct the conductor with a hammer or the like, and the manufacturing speed is reduced because the rotation speed of the core material is slowed or the rotation of the core material is stopped. There was a problem of getting very bad.

  Therefore, a winding device (Japanese Patent Publication No. Sho 62-24344) is proposed in which a conductor is automatically corrected so as not to cause a swollen portion while a conductor is wound around a core material, and a coil is formed. .

  As shown in FIG. 12, this winding device 100 applies a pressing force to a rectangular winding mold 101, a tension applying mechanism 102 that applies tension to the conductor D ′, and a conductor D ′ wound around the winding mold 101. The pressing force applying mechanism 103 is composed of a roller 104 disposed in the vicinity of the winding die 101 and for pressing the roller 104 against the conductor D ′ with a predetermined pressing force. And a link mechanism 105.

  According to this winding apparatus 100, with the tip of the conductor D ′ fixed to the outer peripheral surface of the winding mold 101, the winding mold 101 is rotated by a rotation driving mechanism (not shown) to wind the conductor D ′ around the winding mold 101. Thus, the coil is formed. In this winding apparatus 100, a pressing force is applied from the roller 104 to the conductor D ′ wound around the winding mold 101, and the conductor D ′ is automatically corrected by the pressing force of the roller 104. Since the linear part of the winding mold 101 does not swell, the correction work by a human hand is not required as in the prior art, and the coil is formed without performing the correction work by stopping the rotation of the winding mold 101. It is supposed to be possible.

Japanese Patent Publication No.62-24344

  However, even in the conventional winding apparatus 100, the problem that the bulge generated in the straight portion of the winding mold 101 cannot be corrected sufficiently has not been solved.

  That is, in the winding apparatus 100, one roller 104 is pressed against the conductor D ′ wound around the winding mold 101, and the pressing force is applied to the portion where the roller 104 is pressed. Works. However, even if the winding mold 101 rotates while a pressing force is applied from one roller 104 to the conductor D ′, the roller 104 pushes to the upstream side in the rotation direction of the winding mold 101 from the corner of the winding mold 101. When applied, the portion located downstream in the rotation direction of the winding mold 101 from the corner is not fixed, so the conductor D ′ cannot be sufficiently plastically deformed along the corner of the winding mold 101. . Therefore, a so-called spring back occurs in the portion where the pressing force from the roller 104 does not act, and as a result, the bulge remains in the linear portion of the winding mold 101 as shown in FIG.

  The present invention has been made in view of the above circumstances, and the conductor is plastically deformed along the outer peripheral surface of the core member to suppress the occurrence of swelling due to the springback, and the core having a substantially rectangular cross section. An object of the present invention is to provide a coil manufacturing apparatus capable of forming a coil in accordance with the shape of a material.

The present invention for solving the above problem is:
An apparatus for manufacturing a coil formed by winding a conductor and having a substantially rectangular cross section,
A cross section having a substantially rectangular shape, and a core material for winding the conductor;
A core material support mechanism for rotatably supporting the core material around its central axis;
A rotation drive mechanism for rotating the core material supported by the core material support mechanism around its central axis;
First pressure rollers arranged in parallel at a predetermined interval with a central axis disposed in parallel with the central axis of the core material and sandwiching a plane parallel to a plane including the central axis of the core material And a second pressing roller,
A roller support mechanism for individually supporting the first pressing roller and the second pressing roller so that each of the first pressing roller and the second pressing roller can move in a direction adjacent to the core material and can contact the core material;
A first biasing mechanism that biases the first pressing roller supported by the roller support mechanism toward the core material;
The present invention relates to a coil manufacturing apparatus comprising: a second urging mechanism that urges the second pressing roller supported by the roller supporting mechanism toward the core material side.

  According to this coil manufacturing apparatus, first, the end portion of the conductor is fixed to the core material. Next, the core material is rotated around the central axis by the rotation driving mechanism, and the conductor is wound around the core material. At this time, in the coil manufacturing apparatus, the first pressing roller and the second pressing roller are urged toward the core by the first urging mechanism and the second urging mechanism, respectively, and the two rollers Are pressed against a corner corresponding to at least the maximum turning radius of the core member with a predetermined pressing force (biasing force by the biasing mechanism).

  When the corner portion between the long side and the short side in the cross section of the core material is positioned between the two pressing rollers, the core material is rotated in the rotational direction downstream side (hereinafter simply referred to as “downstream”). The core material rotates while the other pressing roller is pressed against the side), so that the core material rotates from the downstream side of the corner portion while the one pressing roller is pressed against the conductor. It moves relative to the direction upstream side (hereinafter simply referred to as “upstream side”). In this way, when the other pressing roller is pressed against the conductor on the downstream side, the one pressing roller moves from the downstream side to the upstream side of the corner portion, thereby A bending moment acting on the fulcrum acts, and the conductor is plastically deformed along the corner.

  As described above, in the coil manufacturing apparatus, the two pressing rollers are pressed against the conductor so that the conductor is plastically deformed along the corner portion. Swelling is prevented from occurring, and the coil can be accurately formed in accordance with the shape of the core material.

  The “transverse section” refers to a cross section orthogonal to the central axis of the core material. The “substantially rectangular shape” refers to a shape having a long side and a short side, and the shape of the corner includes a bent or curved shape.

  The coil manufacturing apparatus further includes an advance / retreat mechanism that advances and retracts the roller support mechanism in a direction adjacent to the core material, and a third urging mechanism that urges the roller support mechanism toward the core material side. It is preferable to comprise.

  In this case, even if the strokes of the first pressing roller and the second pressing roller by the first urging mechanism and the second urging mechanism are shortened by moving the roller support mechanism closer to the core member by the advance / retreat mechanism. The first pressing roller and the second pressing roller can be pressed against the conductor. In addition, by providing the third urging mechanism that urges the roller support mechanism toward the core material side, the pressing force acting on the conductor from the first pressing roller is the first urging mechanism and the third urging mechanism. The pressing force acting on the conductor from the second pressing roller is the resultant force of the second and third urging mechanisms.

  In the coil manufacturing apparatus, when the first and second pressing rollers are parallel to each other in the advancing / retreating direction and the two long sides of the cross section of the core member, The long side on the winding position side is disposed so as to be positioned between the central axis of the first pressing roller and the central axis of the second pressing roller in the juxtaposed direction of the first and second pressing rollers. It is preferable to do. The “winding position side” means the side facing the conductor to be wound from now on when the two long sides of the cross section of the core are parallel.

  In this way, the stroke amount of the first pressing roller by the first biasing mechanism and / or the third biasing mechanism, and the stroke amount of the second pressing roller by the second biasing mechanism and / or the third biasing mechanism. Even when the angle is reduced, a bending moment can be applied to the conductor using the corner as a fulcrum, and the conductor can be plastically deformed along the corner.

  The coil manufacturing apparatus further includes a roller feeding mechanism that moves the roller support mechanism in a direction along the central axis of the core material in accordance with the rotation of the core material driven by the rotation drive mechanism. It is preferable to become.

  In this case, for example, when winding a plurality of rows of conductors continuously in the direction along the central axis of the core material, the roller support mechanism moves the roller support mechanism in the direction along the central axis of the core material, and the first The positions of the pressure roller and the second pressure roller can be matched with the position where the conductor is wound. Therefore, even when the conductors are wound around the core in a plurality of rows, the two pressing rollers can be reliably pressed against the wound conductor, and the bending moment with the corner portion as a fulcrum against the conductor. And can be plastically deformed along the corners.

  The coil manufacturing apparatus further includes a drum support mechanism that rotatably supports the drum around which the conductor is wound, and the drum support mechanism includes a center axis of the supporting drum and a center of the core member. The conductor is drawn out from the drum, which is disposed at a predetermined distance from the core material so as to be parallel to the shaft and supported by the drum support mechanism, toward the core material. It is preferable to configure.

  When the coil manufacturing apparatus includes the drum support mechanism, a guide mechanism that guides the running path of the conductor fed out from the drum between the drum support mechanism and the core member, and the rotational drive It is preferable to further include a guide feed mechanism that moves the guide mechanism in a direction along the central axis of the core material in accordance with the rotation of the core material driven by the mechanism.

  In this way, for example, when a plurality of rows of conductors are continuously wound in the direction along the central axis of the core material, the conductor is fed toward the core material by moving the position of the guide mechanism by the guide feed mechanism. Since the position of the conductor can be adjusted, the conductor can be smoothly guided to the portion of the core material where the conductor is to be wound.

  As described above, according to the coil manufacturing apparatus according to the present invention, the conductor is plastically deformed along the corner portion by applying a bending moment about the corner portion of the substantially rectangular core material to the conductor. The coil can be formed while suppressing the occurrence of swelling due to so-called springback.

It is a mimetic diagram showing a schematic structure of a coil manufacture device concerning one embodiment of the present invention. It is a perspective view which shows the core material, core material support mechanism, core material rotation drive mechanism, pressing mechanism, and roller feed mechanism in the coil manufacturing apparatus which concerns on one Embodiment. It is a side view which shows a press mechanism. It is the top view seen from the arrow A direction in FIG. It is explanatory drawing which shows the process in which a conductor is wound around a core material. It is explanatory drawing which shows the process in which a conductor is wound around a core material. It is explanatory drawing which shows the process in which a conductor is wound around a core material. It is explanatory drawing which shows the process in which a conductor is wound around a core material. It is explanatory drawing which shows the process in which a conductor is wound around a core material. It is explanatory drawing which shows the process in which a conductor is wound around a core material. It is explanatory drawing which shows the process in which a conductor is wound around a core material. It is a schematic diagram which shows schematic structure of the conventional winding apparatus.

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

  As shown in FIGS. 1 to 4, the coil manufacturing apparatus 1 of this example includes a core material 2 around which a conductor D is wound, a core material support mechanism 3 that rotatably supports the core material 2, and a core material. Servo motor 10 that is a core material rotation drive mechanism that rotates 2 around the central axis, and a first pressing roller 18 and a second pressing roller 19 that are pressed against the conductor D wound around the core material 2. A pressing mechanism 15 that applies pressure, and a roller feeding mechanism 35 that positions the two pressing rollers 18 and 19 at predetermined positions by moving the pressing mechanism 15 along a direction parallel to the central axis of the core member 2. And a conductor feeding mechanism 45 that feeds the conductor D toward the core member 2.

  The core material 2 is a member having a substantially rectangular parallelepiped shape in which a cross section orthogonal to the central axis (hereinafter referred to as “transverse section”) has a substantially rectangular shape, and a through hole is formed along the central axis. Flange 2a is detachably attached to each of the two orthogonal surfaces, and any one of the surfaces other than the surface orthogonal to the central axis (hereinafter referred to as "outer peripheral surface") An attachment portion (not shown) to which the tip portion of the conductor D is attached is provided. In addition, this core material 2 has a corner | angular part which is a curved surface between the surface containing the short side in a cross section, and the surface containing a long side.

  The core material support mechanism 3 is parallel to the rotation shaft 4 inserted through the through hole of the core material 2, two pairs of support members 5 and 6 that support the rotation shaft 4, and the central axis of the core material 2. The two guide rails 7 arranged side by side on the base 39 along a certain direction, and a moving base 9 on which a slider 8 that engages with the two guide rails 7 is fixed on the lower surface. One support member 5 of the two support members 5 and 6 is fixed on the base 39 and rotatably supports one end of the rotating shaft 4, and the other support member 6 is the moving table 9. The other end of the rotating shaft 4 is rotatably supported. A servo motor 10 as a core material rotation drive mechanism connected to the other end of the rotating shaft 4 supported by the other support member 6 is attached to the side surface of the other support member 6.

  The other support member 6 is fixed to a moving base 9 that moves while being guided by a guide rail 7 so that it can move along a direction parallel to the central axis of the core material 2. By moving the other support member 6 in a direction away from the one support member 5, the connection between the other end of the rotary shaft 4 and the servo motor 10 is released, and the rotary shaft by the other support member 6 is released. The support of the other end of 4 is released, and the core material 2 can be removed from the rotating shaft 4.

  The pressing mechanism 15 includes a bottom plate 16a, a support 16 composed of two side plates 16b and a back plate 16c, a slide plate 17 disposed on the bottom plate 16a of the support 16 in parallel with the back plate 16c, The first pressing roller 18 and the second pressing roller 19 pressed against the conductor D wound around the core material 2, and the surface of the slide plate 17 facing the core material 2 (hereinafter referred to as “front surface”). The roller support mechanism 20, the first urging mechanism 28 and the second urging mechanism 29 for urging the two pressing rollers 18 and 19 toward the core member 2, respectively, and the front surface of the slide plate 17. The air cylinder 32 includes a piston 32b whose tip is fixed to a parallel surface (hereinafter referred to as “rear surface”).

  The first pressing roller 18 and the second pressing roller 19 are formed in an arc shape on the outer peripheral edge thereof in order to prevent the insulator covering the conductor D from being damaged when pressed against the conductor D. Chamfering is applied. Further, the width of the two pressing rollers 18 and 19 is larger than the width of the conductor D wound around the core material 2, whereby the center of the core material 2 with respect to the core material 2. When the conductors D are continuously wound in a plurality of rows in the direction along the axis, the two pressing rollers 18 and 19 can be pressed against a portion that moves from the winding portion to the next winding portion. It has become. If the width becomes too large, the pressing force per unit area acting on the conductor D becomes too small. Therefore, it is preferable that the width is not more than twice the width of the conductor D.

  The roller support mechanism 20 is a member having a rectangular shape in a side view, and is fixed to the front surface of the movable body 17, and a frame body 21 in which an internal space is divided into two upper and lower spaces, and an upper side of the frame body 21. A first cylinder 22 that is erected from the inner surface of the frame body 21 toward the core material 2 side and is movable forward and backward toward the core material 2 side, and a frame in the lower space of the frame body 21. A second cylinder 23 erected from the inner surface of the body toward the core material 2 side and capable of moving forward and backward toward the core material 2 side; and a first pressure roller support fixedly provided at the tip of the first cylinder 22 The member 24 includes a second pressing roller support member 25 fixed to the tip of the second cylinder 23.

  The first pressure roller support member 24 and the second pressure roller support member 25 include a base portion 24a to which the first cylinder 22 and the second cylinder 23 are respectively fixed, and from both ends of the base portion 24a toward the core material 2 side. This is a U-shaped member as viewed from above, which is composed of two extended arm portions 24b, 25b. The first pressing roller 18 and the second pressing roller 19 are arranged such that the central axis of the two pressing rollers 18 and 19 is parallel to the central axis of the core member 2 between the two arm portions 24b and 25b. The two pressing rollers 18 and 19 face each other through the rotary shafts 26 and 27 so as to face each other so as to face each other across a plane parallel to the plane including the central axis of the core member 2. And is supported in a freely rotatable manner.

  The first urging mechanism 28 and the second urging mechanism 29 include coil springs 30 and 31 provided in the first cylinder 22 and the second cylinder 23, and the first pressing roller 18 and the second pressing roller 19. Is a mechanism for urging each toward the core 2 side. In the first urging mechanism 28 and the second urging mechanism 29, the first pressing roller 18 and the second pressing roller 19 are pressed against the conductor D, and the first cylinder 22 and the second cylinder 23 contract. The internal coil springs 30 and 31 are compressed, and the restoring force becomes an urging force.

  The air cylinder 32 has a main body 32a attached to the back plate 16c in a state where the piston 32b is inserted into a through-hole formed in the back plate 16c of the support 16 and the tip thereof is fixed to the rear surface of the slide plate 17. It has been. The air cylinder 32 is an embodiment in which the advance / retreat mechanism and the third urging mechanism are integrally embodied, and the entire roller support mechanism 20 is adjacent to the core member 2 by advancing / retreating the piston 32b. When the first pressing roller 18 and the second pressing roller 19 are pressed against the conductor D, the two pressing rollers 18 and 19 are directed toward the core 2 with a predetermined air pressure. Function as a mechanism for energizing.

  The slide plate 17 is inserted into a through hole formed in the back plate 16c of the support 16 and its advance / retreat is guided by two guide rods 33 whose tip portions are fixed to the rear surface of the slide plate 17. It is like that.

  The roller feed mechanism 35 includes two guide rails 36 arranged side by side along the direction parallel to the central axis of the core member 2 on the upper surface of the base 40 disposed on the base 39. And a ball screw (not shown) disposed between the two guide rails 36 and a slider 37 fixed to the lower surface of the bottom plate 16a of the support 16. ) And a servo motor 38 that rotates the ball screw about its axis. The operation of the servo motor 38 is controlled according to the rotation of the core material 2. For example, the conductor D is continuously provided in the direction along the central axis with respect to the core material 2. When a plurality of rows are wound around, the roller feeding mechanism 35 is moved by a predetermined amount each time the core member 2 is rotated in order to make the next wound portion and the two pressing rollers 18 and 19 face each other. In addition, the operation of the servo motor is controlled.

  Note that the entire pressing mechanism 35 is configured such that when the two long sides in the cross section of the core material 2 are parallel to each other, the advance and retreat directions of the first and second pressing rollers 18 and 19 are parallel to each other. The long side on the side facing the conductor D guided from the drum 46 (winding position side) is positioned between the central axis of the first pressing roller 18 and the central axis of the second pressing roller 19. Is arranged (see FIG. 1).

  The conductor feeding mechanism 45 includes a drum 46 around which the conductor D wound around the core material 2 is wound, and a drum support mechanism that rotatably supports the drum 46 around an axis parallel to the central axis of the core material 2. 47, a guide member 48 that guides the running path of the conductor D that is fed from the drum 46 and wound around the core member 2, and a guide feed mechanism 49 that moves along a direction parallel to the central axis of the core member 2. The conductor D fed from the drum 46 can be guided to the core member 2 along a predetermined path by moving the guide member 48 by the guide feed mechanism 49.

  Next, a process of manufacturing a coil having a substantially rectangular cross section with the coil manufacturing apparatus 1 having the above configuration will be described with reference to FIGS. In addition, the coil manufacturing apparatus 1 in the following description is an aspect in which a mounting portion is provided on a surface including the short side.

  First, the leading end portion of the conductor D guided from the drum 46 via the guide member 48 is fixed to the attachment portion of the core member 2. Next, the entire roller support mechanism 20 is moved by the air cylinder 32 so that the first pressing roller 18 and the second pressing roller 19 are always in contact with the core material 2 when the core material 2 is rotated. Move in the direction adjacent to.

  Next, as shown in FIG. 5, the core material 2 is rotated in a predetermined direction (arrow direction in FIG. 5) by the servo motor 10. When the core material 2 rotates, the conductor D is drawn out from the drum 46, and the first pressing roller 18 is first pressed against the conductor D fixed to the mounting portion with a predetermined pressing force (biasing force) (see FIG. 6). ). The first pressing roller 18 and the second pressing roller 19 change their forward / backward positions according to the expansion / contraction of the first cylinder 22 and the second cylinder 23 in accordance with the position change of the outer peripheral surface of the core member 2 due to the rotation. 2 is maintained in contact with the outer peripheral surface, and the state of being biased toward the core member 2 by the first biasing mechanism 28 and the second biasing mechanism 29 is maintained.

  When the core material 2 further rotates, the first pressing roller 18 moves relative to the surface including the short side while pressing the conductor D, and the second pressing roller 19 has a predetermined biasing force. Therefore, it is pressed against the conductor D. Thus, the conductor D is shape | molded along the surface containing the said short side by moving along the surface containing the said short side in the state in which the 1st press roller 18 was pressed on the conductor D (FIG. 7). reference).

  Here, in the coil manufacturing apparatus 1 of this example, when the forward and backward directions of the first and second pressing rollers 18 and 19 and the two long sides in the cross section of the core material 2 are parallel, these two Among the long sides, the long side on the side facing the conductor D guided from the drum 46 (winding position side) is between the central axis of the first pressing roller 18 and the central axis of the second pressing roller 19. Therefore, even if the strokes by the first urging mechanism 28, the second urging mechanism 29 and the air cylinder 32 are shortened, the pressing rollers 18 and 19 can be pressed against the conductor D. The bending moment with the corner portion as a fulcrum can be applied to the conductor D.

  Further, when the core material 2 further rotates, the first pressing roller 18 applies a pressing force to the conductor D from the surface including the short side to the surface including the long side via the corner portion. Move relative to it. Thus, the conductor D is pressed against the surface including the short side by the second pressing roller 19 and the conductor D is pressed against the surface including the long side by the first pressing roller 18, that is, the corner portion. Is positioned between the two pressing rollers 18 and 19 (see FIG. 8). As described above, the second pressing roller 19 presses the conductor D against the surface including the short side, and the first pressing roller 18 moves while pressing the conductor D to the surface including the long side via the corner portion. As a result, a bending moment with the corner portion as a fulcrum acts on the conductor D, and thus the conductor D is molded along with the plastic deformation along the corner portion.

  Thereafter, while the first pressing roller 18 presses the conductor D against the surface including the long side and relatively moves along the conductor D, the second pressing roller 19 extends from the surface including the short side through the corner portion. The conductor D moves relative to the surface including the side while the pressing force is applied to the conductor D (see FIG. 9), whereby the conductor D is formed along the surface including the long side.

  Next, when the first pressing roller 18 moves relatively from the surface including the long side to the surface including the short side through the corner while maintaining the state in which the pressing force is applied to the conductor D, As described above, the corner portion is positioned between the two pressing rollers 18 and 19, and a bending moment with the corner portion serving as a fulcrum acts on the conductor D, so that the conductor D is plastically deformed and molded along the corner portion. (See FIG. 10).

  Thereafter, the first pressing roller 18 moves relative to the surface including the short side while maintaining the state where the conductor is pressed against the surface including the short side, and the second pressing roller 19 passes through the corner from the surface including the long side. Then, the conductor D moves relatively to the surface including the short side while maintaining the state in which the pressing force is applied to the conductor D, and the conductor D is formed along the surface including the short side.

  Then, after winding the conductor D around the core material 2 and then winding the second volume next to the first volume along the direction parallel to the central axis of the core material 2, the guide feed mechanism 49 guides the second volume. The member 48 is moved in a direction parallel to the central axis of the core material 2 so that the conductor D fed out from the drum 46 is smoothly guided to a predetermined position of the core material 2, and a pressing mechanism is provided by the roller feed mechanism 35. 15 is moved along a direction parallel to the central axis of the core member 2 to position the two pressing rollers 18 and 19 at positions where they can be pressed against the conductor D of the second roll.

  Thus, according to the coil manufacturing apparatus 1 of this example, since the conductor D can be plastically deformed along the corners of the core member 2, it is possible to prevent the bulge due to the springback, and the coil Can be formed with high accuracy so that the cross section thereof is substantially rectangular.

  Incidentally, using the coil manufacturing apparatus 1 of the present example, the inventors have a core material having a short side of 70 mm and a long side of 160 mm in the cross section and a short side of the cross section of 105 mm and a long side of 194 mm. A strip-shaped conductor having a thickness of 3 mm and a width of 10 mm is wound around the core material 15 times continuously along the central axis of the core material, and two coils having different sizes are produced by stacking four layers of this. Both coils could be accurately formed into a shape along the outer peripheral surface of the core material without causing swelling or the like.

  As mentioned above, although one Embodiment of this invention was described, the specific aspect which this invention can take is not restricted to this at all.

  For example, in the above example, the first urging mechanism 28 and the second urging mechanism 29 are mechanisms using coil springs, but the present invention is not limited to this, and the first pressing roller 18 and the second pressing roller. Any mechanism may be used as long as it can urge each of the members 19 toward the core 2 side.

  In the above example, the advance / retreat mechanism and the third urging mechanism are integrally embodied as the air cylinder 32. However, these two mechanisms may be embodied separately or only one of them may be embodied. The ratio of the long side to the short side (short side / long side ≦ 1) is large in the cross section of the core material 2, and the two pressing rollers 18 and 19 can be connected to the core material 2 without securing a long stroke. When it can be pressed against the outer peripheral surface, the advance / retreat mechanism and the third urging mechanism need not be provided.

  Furthermore, in the above example, when the advancing / retreating direction of the first pressing roller 18 and the second pressing roller 19 and the two long sides in the cross section of the core material 2 are parallel, the long side on the winding position side The pressing mechanism 35 is arranged so that is positioned between the central axis of the first pressing roller 18 and the central axis of the second pressing roller 19, but is not limited thereto.

  In addition, the coil manufacturing apparatus 1 of this example is particularly effective when the conductor D wound around the core material 2 has low workability, but is a material with high workability (easy to bend). But of course there are significant effects.

DESCRIPTION OF SYMBOLS 1 Coil manufacturing apparatus 2 Core material 3 Core material support mechanism 4 Rotating shaft 5, 6 Support member 10 Servo motor 15 Pressing mechanism 16 Support body 17 Slide plate 18 First press roller 19 Second press roller 20 Roller support mechanism 21 Frame body 22 1st cylinder 23 2nd cylinder 24 1st press roller support member 25 2nd press roller support member 28 1st energizing mechanism 29 2nd energizing mechanism 32 Air cylinder 35 Roller feed mechanism 45 Conductor delivery mechanism 46 Drum 47 Drum support mechanism 48 Guide member 49 Guide feed mechanism

Claims (6)

An apparatus for manufacturing a coil formed by winding a conductor and having a substantially rectangular cross section,
A cross section having a substantially rectangular shape, and a core material for winding the conductor;
A core material support mechanism for rotatably supporting the core material around its central axis;
A rotation drive mechanism for rotating the core material supported by the core material support mechanism around its central axis;
First pressure rollers arranged in parallel at a predetermined interval with a central axis disposed in parallel with the central axis of the core material and sandwiching a plane parallel to a plane including the central axis of the core material And a second pressing roller,
A roller support mechanism for individually supporting the first pressure roller and the second pressure roller so that each of the first pressure roller and the second pressure roller can move in a direction in which the first pressure roller and the second pressure roller are in contact with and separate from the core material;
A first biasing mechanism that biases the first pressing roller supported by the roller support mechanism toward the core material;
A coil manufacturing apparatus comprising: a second urging mechanism that urges the second pressing roller supported by the roller support mechanism toward the core material side. An advancing and retreating mechanism for advancing and retreating the roller support mechanism in a direction of separating from and contacting the core material;
The coil manufacturing apparatus according to claim 1, further comprising a third biasing mechanism that biases the roller support mechanism toward the core material side.   When the first and second pressing rollers have their advancing and retreating directions and two long sides of the cross section of the core member parallel to each other, the long side on the winding position side of the two long sides is The first and second pressing rollers are arranged so as to be positioned between the central axis of the first pressing roller and the central axis of the second pressing roller in the juxtaposed direction of the first and second pressing rollers. The coil manufacturing apparatus according to claim 1 or 2.   The apparatus further comprises a roller feed mechanism that moves the roller support mechanism in a direction along the central axis of the core material in accordance with the rotation of the core material driven by the rotation drive mechanism. The coil manufacturing apparatus in any one of Claims 1 thru | or 3. A drum support mechanism for rotatably supporting the drum around which the conductor is wound;
The drum support mechanism is disposed at a position separated from the core material by a predetermined distance so that a central axis of the drum to be supported and a central axis of the core material are parallel to each other.
5. The coil manufacturing apparatus according to claim 1, wherein the conductor is extended from the drum supported by the drum support mechanism toward the core member. 6. Between the drum support mechanism and the core material, a guide mechanism that guides the running path of the conductor drawn out from the drum;
The guide feed mechanism according to claim 1, further comprising a guide feed mechanism that moves the guide mechanism in a direction along a central axis of the core material in accordance with rotation of the core material driven by the rotation drive mechanism. Item 6. The coil manufacturing apparatus according to Item 5.

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