JP2017034081A - Winding method, winding device or coil manufactured using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method or a manufacturing device for winding a non-circular spiral coil such as a rectangular coil that can be configured thin at a time point when the coil is manufactured, or the coil.SOLUTION: The manufacturing method of the winding comprises: wire supply means for feeding out and holding a coil wire material; a bending guide that is provided at a side of the wire material supply means; bending means for bending the coil wire material while abutting it to the bending guide; and coil moving means for moving the coil vertically to a winding surface of the coil. The manufacturing method iteratively implements a wire material supply step for feeding out the coil wire material while changing a supply length of the coil wire material by the wire material supply means, and a bending step for bending the coil wire material by the bending means. During at least a part of the bending step, the amount of a movement by the coil moving means is settled within an elastic limit range of the coil wire material, a coil having a smaller coil circumferential length is inserted inside of a coil having a larger coil circumferential length, and a spiral non-circular coil is formed. A thin coil can be obtained when the manufacture is completed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a winding device for a non-circular coil.

  In recent years, in order to reduce the size and performance of rotating machines and charging devices, a coil is wound in a non-circular shape such as a square in a spiral shape.

  In Patent Document 1, a plurality of unit winding portions having mutually different inner peripheral lengths are continuously formed in the winding axis direction by winding one conductive wire in a spiral shape, and the plurality of unit winding portions are formed. After the unit coil part is repeatedly formed in the winding axis direction to produce an intermediate product of the coil, the intermediate product is compressed in the winding axis direction, and the inner circumference of the plurality of unit winding parts constituting each unit coil An air-core coil is disclosed in which a part of a unit winding portion having a small inner peripheral length is pushed into the inside of a unit winding portion having a long length, and is multilayered in a spiral shape.

Japanese Patent Laid-Open No. 2003-86438

  In the coil manufacturing method of Patent Document 1, since the intermediate coil is compressed and multi-layered in a spiral shape, in order to incorporate this coil in a rotating machine or a charging device, a design in which the coil is compressed in the vertical direction is essential. In addition to being constrained by the design, there was a drawback that it could not be easily installed.

  The present invention solves the above-described problems, and provides a manufacturing method, a manufacturing apparatus, and a coil for winding a spiral non-circular coil that can be formed thinly at a high speed with a simple configuration at high speed. With the goal.

The winding manufacturing method according to the present invention includes a wire supply means for feeding and gripping a coil wire, a bending guide provided on the wire supply means side, and bending the coil wire by bringing the coil wire into contact with the bending guide to form a coil. And a coil moving means for moving the coil in a direction perpendicular to the winding surface of the coil. The step of feeding the coil wire while changing the supply length of the wire by the wire supply means and the coil by the bending means The step of bending the wire is repeated, and the amount of movement by the coil moving means is performed within the elastic limit range of the coil wire during at least a part of the bending step. A coil is inserted to form a spiral non-circular coil.
The winding manufacturing method according to the present invention includes a wire supply means for feeding and gripping a coil wire, a bending guide provided on the wire supply means side, and bending the coil wire by contacting the coil wire with the bending guide. A step of feeding the coil wire while changing the supply length of the wire by the wire supply means, and a coil at a position after the bending of the coil wire. The process of repeatedly bending the coil wire rod having a center of rotation outside the outer circumference of the coil and repeatedly rotating in one direction is repeated, and a coil with a small coil circumference is inserted inside a coil with a large coil circumference. A circular coil is formed.
Specifically, a spiral noncircular coil is manufactured by continuously repeating a bent portion and a non-bent portion from one end of the wire coil as the above configuration.
The winding manufacturing method of the present invention includes a first winding step of winding from a coil having a large coil circumference to a coil having a small coil circumference, and winding from a coil having a small coil circumference to a coil having a large coil circumference. A second winding step that rotates, and the coils wound in the first winding step and the second winding step are partially overlapped to constitute one winding unit.
In the winding manufacturing method of the present invention, in the first winding unit, the coil is continuously wound so that the coil is not superimposed on a part of the innermost peripheral portion and the outermost peripheral portion.
In the winding method of the present invention, one winding unit is repeated a plurality of times to obtain a large-capacity inductance.

The winding device of the present invention includes a wire supply means for feeding and gripping the coil wire, a bending guide provided on the wire supply means side, and a bending for forming the coil by bending the coil wire against the bending guide. And a coil moving means for moving the coil in a direction perpendicular to the winding surface of the coil, repeatedly bending the bending means while changing the supply length of the wire, and moving the coil during at least a part of the bending process. The amount of movement by means is performed within the elastic limit range of the coil wire, and a coil with a small coil circumference is inserted inside a coil with a large coil circumference to produce a spiral non-circular coil. .
Further, the winding device of the present invention forms a coil by feeding and gripping the coil wire, a bending guide provided on the wire supplying means side, and bending the coil wire in contact with the bending guide. Bending means, a rotating mechanism for rotating the bending means, and a coil moving means for moving the coil bent by the bending means in the coil axial direction within the elastic limit range of the coil wire, the bending means being a coil wire The center of rotation is located outside the outer periphery of the coil at the position after bending, and the rotation is repeated in one direction, and the bending by the bending means is repeated while changing the supply length of the coil wire. A non-circular coil is manufactured by inserting a coil having a small coil circumference.
Further, the present invention is a spiral non-circular coil manufactured by the above winding method or winding device. .

The winding method according to the present invention includes a bending means for bending a coil wire with a bending guide to form a coil, and a coil bent by the bending means in the coil axial direction within the elastic limit range of the coil wire. Coil moving means to move, so that bending by the bending means is repeated while changing the supply length of the wire, and a non-circular coil is inserted by inserting a coil with a small coil circumference inside a coil with a large coil circumference. Since the coil is manufactured, the spiral coil on the plane is formed at the time when the manufacture of the coil from the one with the large coil circumference to the one with the small coil circumference or from the coil with the small coil circumference to the large one is completed to make it thin. There is no need to compress or install or store the coil.
In addition, when manufacturing by winding a plurality of unit coils, the overall coil height is reduced, and the amount of swing when the coil is moved or rotated during manufacturing is small, and the coil can be manufactured with high accuracy and high speed.

The perspective view which shows the winding apparatus which concerns on Example 1 of this invention. The perspective view which shows the coil manufacture state of the winding apparatus which concerns on Example 1 of this invention. The schematic diagram which shows operation | movement from the 1st step of the winding method which concerns on Example 1 of this invention to the 5th step. The schematic diagram which shows the operation | movement from the 6th step of the winding method which concerns on Example 1 of this invention to the 8th step. The schematic diagram which shows the manufacturing method of the coil by the winding method which concerns on Example 1 of this invention. The schematic diagram which shows the manufacturing method of the coil by the winding method which concerns on Example 1 of this invention. The schematic diagram which shows the manufacturing method of the coil by the winding method which concerns on Example 1 of this invention. The schematic diagram which shows the manufacturing method of the coil by the winding method which concerns on Example 1 of this invention. The schematic diagram which shows the manufacturing method of the coil by the winding method which concerns on Example 1 of this invention. The schematic diagram which shows the manufacturing method of the coil by the winding method which concerns on Example 1 of this invention. The external view of the coil manufactured with the winding method which concerns on Example 1 of this invention. Sectional drawing of the coil manufactured with the winding method which concerns on Example 1 of this invention. The external view of the coil which concerns on Example 2 of this invention. Sectional drawing of the coil which concerns on Example 2 of this invention. The external view of the coil which concerns on Example 3 of this invention. Sectional drawing of the coil which concerns on Example 3 of this invention. The external view of the coil which concerns on Example 4 of this invention. The perspective view which shows the winding apparatus which concerns on Example 5 of this invention.

  Embodiments of the present invention will be described below with reference to the drawings, taking each of Examples 1 to 5 as examples. The contents of the present invention are not limited to these embodiments.

A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a winding apparatus A according to the first embodiment. The wire supply means B is for sending or stopping and holding the coil wire 2 having a flat cross section, and for sending the coil wire 2 wound around a bobbin (not shown) in the direction of arrow J in the figure. It is. The wire supply means B is provided with two sets of drive mechanisms in which a motor and a drive roller are combined. That is, a first drive mechanism that sandwiches the coil wire 2 between the first motor 3 and the first drive roller 4 that transmits the rotation of the first motor 3 and the first drive roller 4 and the first passive roller 5 that passively rotates. And a second drive mechanism that sandwiches the coil wire 2 by the second motor 6, the second drive roller 7, and the second passive roller 8 that passively rotates, and the drive roller and the passive roller are respectively indicated by arrows K 1. The coil wire 2 is sent out by rotating in the directions of arrows K2, K3, and K4. The coil wire 2 is first fed by the first drive roller 4 and the first passive roller 5, guided by the wire guide 9a, and further driven by the second drive roller 7 and the second passive roller 8 to reach the wire guide 9b. A bending guide 9ba is provided at the end of the wire guide 9b as described later (see FIG. 3). Further, the coil wire 2 is gripped by stopping the rotation of each motor.
Each motor can be equipped with a speed reducer to make the rotation speed appropriate, and has a control device (not shown) for starting and stopping the rotation of the motor.
Instead of the wire supply means by the combination of the first motor 3, the first drive roller 4 and the first passive roller 5, or the combination of the second motor 6, the second drive roller 7 and the second passive roller 8, A linear motion conversion mechanism using a motor and a screw may be used.

  The bending means C includes a rotating shaft 11 of a bending motor 10 which is a rotating mechanism, and a bending roller 13 which is freely rotatable via a lever 12 and rotates in the direction of an arrow L. In FIG. The coil wire 2 is bent upward in the figure with the bending guide 9ba as a fulcrum. The coil movement guide 21 is fixed to the wire guide 9b side. When the coil wire 2 is bent in a coil shape, the coil movement guide 21 is guided by the coil movement guide 21 and moves while rotating sequentially.

The bending means C is rotated several times to bend the coil wire 2 to form a coil 14 wound in a rectangular spiral shape as shown in FIG. If the center line of the coil at the position where the bending roller 13 of the bending means C bends the coil wire 2 is Z1, and the center line of the rotating shaft 11 of the bending means C is Z2, the center line Z2 is the outer circumference of the coil 14. It is located outside the surface.
The wound coil 14 is placed on the contact portion 15 a of the coil guide 15 and supports the weight of the coil 14. The coil guide 15 has a function of braking the swing of the coil 14 caused by the rotation of the coil 14 when the coil wire 2 is bent.

  In FIGS. 1 and 2, the wound coil is installed in a direction perpendicular to the direction of gravity. However, by changing the arrangement of the wire rod supply means B and the bending means C, the coil can be It can also be installed parallel to the direction.

  The winding process of the winding device of the present invention is schematically shown in FIGS. 3 to 4 are views from the XX direction shown in FIG. FIG. 3A shows Step 1 and shows a state before the coil wire 2 starts to be wound. The rotating shaft 11 and the bending roller 13 are stopped, and the coil wire 2 is shown by an arrow J. In the direction and protrudes from the wire guide 9B. A circular two-dot chain line indicates a rotation locus of the bending roller 13. When the coil wire 2 is further sent and reaches the length of one side of the rectangular coil as shown in Step 2 of FIG. 3B, the wire supply means B stops rotating and grips the coil wire 2. The control of the feeding length of the coil wire 2 is performed by the number of rotations of the motor of the wire supply means B. The bending roller 13 starts to rotate in the direction of the arrow L in synchronization with the coil wire 2 being fed a predetermined length, and the bending roller 13 comes into contact with the coil wire 2 so that the coil wire 2 is at the end of the wire guide 9b. Bending is started around the curved bending guide 9ba.

  FIG. 3C shows step 3 and shows a state in which the coil wire 2 is bent at approximately 90 degrees through the curved portion 2c. In this state, the bending roller 13 is rotated in the clockwise direction and moved substantially to the leftmost position. The coil wire 2 is rotated approximately 90 degrees counterclockwise, and in some cases, more than 90 degrees in consideration of the influence of the springback. Bend at an acute angle. Further, when the bending roller 13 continues to rotate in the clockwise direction, it is separated from the coil wire 2. In step 4 of FIG. 3D, the bending roller 13 further rotates, bends the coil wire 2, and gradually moves away from the coil wire 2. The coil wire 2 is not moved during the period from FIG. 3B to FIG. 3C, and the position thereof is maintained. Thereafter, the supply of the coil wire 2 is started by the wire supply means B. At this time, the bending roller 13 continues to rotate, and the movement of the bending roller 13 is performed faster. Therefore, as shown in FIG. Never touch. Note that the timing of feeding the coil wire 2 may be performed after the bending roller 13 is separated by a considerable distance, for safety.

  When the coil wire 2 is delivered by the length of the other side of the rectangular coil, the wire supply means B stops and holds the coil wire 2 as shown in step 5 of FIG. The bending roller 13 continues to rotate and approaches the coil wire 2. At this time, since the driving load applied to the bending roller 13 is small, the speed can be increased to save time. In particular, useless waiting time can be eliminated when one side of the rectangular shape is short.

FIG. 4B shows Step 6, where the bending roller 13 comes into contact with the coil wire 2 and bending is started around the end 9 ba of the bending guide 9 b, and the second time in Step 7 of FIG. 4C. The bending process is completed. At this time, since a relatively large load is applied to the bending roller 13, bending is performed by decreasing the rotational speed and increasing the motor torque. Further, the third bending process is performed at step 8 in FIG. By repeating the above operation, rectangular coils 14 stacked as shown in FIG. 2 are manufactured.
As shown in FIG. 4D, the coil wire 2 is bent by the bending roller 13 of the bending means C, and is guided to ride on the coil moving guide 21 to be formed in a coil shape. When the coil 14 is formed, the center Z1 of the coil and the center Z2 of the rotating shaft 11 are different in position, and Z2 is located further outside the outer periphery of the coil 14.

  As shown in FIGS. 3 to 4, the bending roller 13 and the coil wire 2 are not in contact with each other except during bending, and the bending roller 13 is not necessarily rotated in the reverse direction, and the coil is oriented in the direction perpendicular to the coil surface. It turns out that it is not necessary to move to. Further, since the bending roller 13 may be continuously rotated without moving the central axis in the axial direction when processing is started, the control of the bending motor 10 is easy and can be rotated at high speed. As the bending motor 10, an induction motor, a synchronous motor, a stepping motor or the like generally called a servo motor is used, and it may be provided with a position detector that detects the rotational position of the motor.

When the operations of FIGS. 3 to 4 are repeated in this manner, a coil having a constant coil circumference can be manufactured. If the angle of bending is changed, a polygonal coil other than a quadrangle can be manufactured.
In the present embodiment, the bending roller 13 is continuously rotated in the same direction. However, the bending roller 13 rotates the coil wire rod in the reverse direction (counterclockwise) after bending (FIG. 3C). After returning to the state of (a) and feeding the coil wire 2, the direction of rotation may be changed again (clockwise) and bent.
In the first embodiment, the bending motor 10 is shown as the rotating mechanism. However, an electrically driven solenoid or a pneumatic plunger that performs reciprocating motion may be used.

  Next, as Example 1 of the present invention, a rectangular coil of 7.6 mm × 2 mm is wound edgewise, and a method of manufacturing a rectangular spiral coil having an outermost circumference of 84 mm × 84 mm and an innermost circumference of 28 mm × 28 mm is shown in FIGS. Shown in schematic diagram. In addition, a specific dimension is an example, Comprising: This invention is not limited to this dimension. The process of winding from a coil with a large circumference as a first winding process and winding a coil with a small circumference in order will be described. FIG. 5A shows the state of the initial position before winding the coil, and the coil wire 2 is sent out along the wire guide 9b by the wire supply means B (FIG. 1). Reference numeral 21 denotes a coil movement guide as coil moving means. As shown in FIG. 5B, the coil wire 2 stops when it is fed a predetermined length (straight portion 2b), and the bending roller 13 rotates as shown in FIG. 5C to rotate the bent portion 2c of the coil wire 2. The first bend is performed along the wire guide 9b at the portion. Since the terminal is taken out in this first bending, for example, in the case of a rectangular coil having a length of one side of the outermost periphery of 84 mm, it is set to be slightly longer, for example, about 110 mm. Next, as shown in FIG. 5D, the coil wire 2 is sent by the wire supply means B in the direction of the arrow, for example, 60 mm (straight line portion 2d), and stopped. The bending roller 13 continues to rotate during this time, and as shown in FIG. 5E, after the coil wire 2 completes feeding, the second bending is performed again at the bending portion 2e. At this time, the coil wire rod front end portion 2a and the linear portion 2b ride on the coil movement guide 21 and rotate while being guided. Since the straight portion 2e is guided by the guide surface 21a of the coil movement guide 21, the coil wire 2 is deformed by moving in a direction perpendicular to the bending coil surface, but the amount of deformation is below the elastic limit of the coil wire. The inclination of the coil movement guide 21 is set so that the deformation amount is obtained. As shown in FIG. 5 (f), the straight portion 2e is sent the same length (60 mm) as that of the second portion (FIG. 5 (d)). As shown in FIG. 5G, the bending is performed at the bent portion 2g by the bending roller 13 for the third time. At this time, the wire from the straight portion 2b to the straight portion 2d is guided by the coil movement guide 21 and rotates. Further, since the straight portion 2b is guided from the cleaning guide 21 to the outside of the wire guide 9b (FIG. 2) and intersects the coil wire 2 passing through the inside of the wire guide 9b in three dimensions, they do not interfere with each other.

  Next, as shown in FIG. 5 (h), the wire coil 2 is sent out shorter than the third feed amount 60mm than the width of the coil wire 2 (7.6 mm in this embodiment), for example, the length of the straight portion 2h. The length is set to 52 mm and the fourth feeding is performed. As shown in FIG. 6A, the fourth bending is performed at the bending portion 2i. Since the straight line portion 2b is guided to the outside of the wire guide 9b as described above, it intersects the supplied coil wire 2 in a three-dimensional manner. The fifth delivery of the coil wire 2 is set to the same length as the fourth time as shown in FIG. 6 (b), and the bent portion 2k is bent as shown in FIG. 6 (c). At this time, since the straight portion 2d is guided outside the wire guide 9b, the bent portion 2b and the bending roller 13 do not interfere with each other, and the fifth turn is performed at the bent portion 2k. In the sixth delivery, as shown in FIG. 6D, the fifth delivery amount is 52 mm, which is shorter than the width of the coil wire 2 and the length of the linear portion 2e is set to 44 mm, for example. A sixth turn is performed by the bent portion 2m.

  Similarly, the seventh time (FIGS. 6 (f) and 6 (g)) is 44 mm, the eighth time (FIGS. 6 (h) and 7 (i)) and the ninth time (FIG. 7 (b) and FIG. 7 (c)) is the total amount 36 mm, the 10th time (FIGS. 7 (d) and 7 (e)) and the 11th time (FIGS. 7 (f) and 7 (g)) are the delivery amount 28mm and the 12th time (FIG. 7 (h), FIG. 8 (a)) and the 13th time (FIG. 8 (b) / FIG. 8 (c)) are the winding and bending of the coil wire 2 having a feed amount of 20 mm. In FIG. 2, a rectangular spiral coil is formed from the larger circumference to the smaller circumference.

Next, a second winding process for winding a coil having a large circumference from a coil having a small coil circumference will be described. The coil wire is fed and bent from the 14th time, so that a rectangular spiral coil is created from the smaller coil circumference to the larger coil circumference. That is, in the 14th time (FIGS. 8 (d) and 8 (e)) and the 15th time (FIGS. 8 (f) and 8 (g)), sending and bending are performed with a sending amount of 20 mm. In the coil drawings after FIG. 8 (e), the portion wound from the larger circumference to the smaller one is indicated by a broken line, and the portion wound from the smaller circumference to the larger one is indicated by a solid line. ing. The coil wire of the practical part is described as being slightly smaller so that it does not overlap with the broken line, but since it is actually one wire, the width of the wire is the same as in the first step. The 16th time (FIGS. 8 (h) and 9 (a)) and the 17th time (FIGS. 9 (b) and 9 (c)) are 28 mm and the 18th time (FIGS. 9 (d) and 9 (e)). ) And 19th time (FIGS. 9 (f) and 9 (g) show a delivery amount of 36 mm, 20th time (FIGS. 9 (h), 10 (a) and 21st times (FIGS. 10 (b) and 10 (c)) ) Feeding amount 44 mm, 22nd time (FIGS. 10 (d) and 10 (e) are sent and bent at a feeding amount of 52mm, and the coil wire 2 is cut into two layers as shown in FIG. 10 (f). Overlapping (one part is one layer) rectangular spiral coil is formed.
The first winding step and the second winding step constitute one winding unit, and the connection terminal can be taken out from the outermost periphery. As will be described later, by repeating the one-winding unit process, a coil laminated in three or more layers can be manufactured. 5 to 10, the bending roller 13 is continuously rotated, the coil wire 2 is continuously supplied, and the coil wire can be cut halfway or wound from the other end. There is no so-called one-stroke writing.

11 and 12 show a spiral coil produced by the manufacturing method of the first embodiment. 11 (a) is a front view, (b) is a rear view, (c) is a right side view, (d) is a left side view, (e) is a plan view, and (f) is a bottom view. (A) and (b) are AA sectional view and BB sectional view shown in the front view of FIG. 11 (a), respectively. The rectangular spiral coil shown in FIG. 11 has a maximum of four turns formed in two layers. The coil already wound when the coil wire 2 is bent is guided by the coil movement guide 21 and deformed in a direction perpendicular to the surface around which the coil is wound. Since it is set within the elastic limit range, the deformation returns due to elasticity in a natural state, and a coil with a small circumferential length enters inside a coil with a large circumferential length as shown in FIG. 11 to form a spiral coil.
In order to keep the deformation in the direction perpendicular to the coil within the elastic limit, the size of the coil moving guide 21 needs to be optimally selected depending on the elastic coefficient of the coil wire, the winding length of the coil, etc. If it is the size shown in Example 1 with the copper wire, there is no problem and it can be manufactured.
As shown in the cross-sectional view of FIG. 12, the coil wire is continuously wound from one end by providing a portion where the wire does not overlap in the winding unit on the innermost peripheral portion and the outermost peripheral portion of the spiral coil. Is possible.

As shown in FIG. 5 (a), winding is started from one end 2a of the coil wire, wound from one having a large coil circumference to one having a small coil circumference, and continuously wound from one having a small coil circumference to one having a large coil circumference. Since it rotates, the outermost periphery and innermost periphery of a coil are comprised so that the number of turns may decrease. That is, many are wound in two layers, but by providing one layer portion on the innermost and outermost circumferences, it is possible to manufacture by winding continuously from the end 2a of the coil wire in the same direction. it can.
Since one side of the non-linear coil is shortened in the inner peripheral portion of the spiral, it is conceivable that the amount of coil movement exceeds the elastic limit. However, slight deformation is acceptable as long as it is within an allowable range for thin dimensions. Particularly in the innermost circumference, there is a portion where there is no overlap in one turn unit, so that the thin dimensions can be maintained.

  13 and 14 show a coil according to a second embodiment of the present invention. The difference from Example 1 is that the spiral is made into two two-layer windings. 13 (a) is a front view, (b) is a rear view, (c) is a right side view, (d) is a left side view, (e) is a plan view, and (f) is a bottom view. (A) and (b) are respectively a CC sectional view and a DD sectional view shown in the front view of FIG.

  15 and 16 show a coil according to a third embodiment of the present invention. The difference from the first embodiment is that the coil wire is round. 15 (a) is a front view, (b) is a rear view, (c) is a right side view, (d) is a left side view, (e) is a plan view, and (f) is a bottom view. (A) and (b) are the EE sectional view and FF sectional view which are respectively shown by Fig.15 (a) front view. Although the coil by a round wire has the fault that a coil size will become large when an electric current density is equivalent, since it is a coil wire material generally manufactured, there exists an advantage which can manufacture a coil at low cost.

  FIG. 17 shows a spiral coil according to a fourth embodiment of the present invention. The difference from the first embodiment is that a rectangular spiral shape is used. In the case of a rectangular coil, the aspect ratio of the rectangle can be adjusted by changing the supply length of the coil wire for each winding.

  FIG. 18 shows a winding device according to a fifth embodiment of the present invention. The difference from the first embodiment is that, in order to obtain a large inductance, winding is continued and a spiral coil having three or more layers is manufactured. However, as the number of layers increases, the axial length becomes longer and swinging occurs due to rotation at the time of winding, making it impossible to wind at high speed. Since it becomes a shape and the height of the coil can be reduced, it is difficult for oscillation to occur, and the coil can be manufactured at high speed and with high accuracy.

A non-circular coil is generally a rectangular coil, but a triangular or pentagonal or more coil can also be manufactured by changing the shape of the bending guide 9ba.
Furthermore, it is possible to perform lap winding by supplying two or more coil wires in a stacked manner.

A Winding device B Wire supply means C Bending means 2 Coil wire 9ba Bending guide 10 Bending motor (rotating mechanism)
14 coils
21 Coil movement guide (coil movement means)

Claims (9)

  Wire rod supply means for feeding and gripping the coil wire rod, a bending guide provided on the wire rod supply portion side, bending means for bending the coil wire rod against the bending guide to form a coil, and the coil A coil moving means for moving the coil wire in a direction perpendicular to a winding surface of the coil, and a wire rod supplying step for feeding the coil wire rod while changing a supply length of the coil wire rod by the wire rod supplying portion; The step of bending the coil wire is repeated, and the step of moving the amount of movement by the coil moving means within the elastic limit range of the coil wire during at least a part of the bending step is performed. A winding method in which a coil with a small coil circumference is inserted inside to form a spiral non-circular coil.   Wire supply means for feeding and gripping a coil wire, bending guide provided on the wire supply means side, bending means for bending the coil wire against the bending guide to form a coil, and the bending means A step of feeding the coil wire while changing the supply length of the wire by the wire supply means, and the bending means from the outer periphery of the coil at a position after the coil wire is bent. A spiral non-circular coil is formed by inserting a coil with a small coil circumference inside a coil with a large coil circumference by bending the coil wire rod by repeatedly rotating in one direction and having a rotation center on the outside. Winding method to do.   The winding method according to claim 1 or 2, wherein a spiral non-circular coil is manufactured by continuously repeating a bent portion and a non-bent portion from one end of the wire coil.   A first winding step of winding from a coil having a large coil circumference to a smaller coil circumference, and a second winding step of winding from a coil having a smaller coil circumference to a larger coil circumference. The winding method according to any one of claims 1 to 3, wherein a part of the coil wound in the first winding step and the second winding step is overlapped to constitute one winding unit.   5. The winding method according to claim 4, wherein the coil is not superimposed on a part of the innermost peripheral portion and the outermost peripheral portion of the spiral coil in the first winding unit.   The winding method according to claim 4 or 5, wherein the coil is laminated by repeating the one winding unit a plurality of times.   In a winding device for manufacturing a non-circular coil having a bending portion and a non-bending portion, a wire supply means for sending and gripping a coil wire, a bending guide provided on the wire supply means side, and the bending guide Bending means for bending a coil wire to be in contact with each other to form a coil; and coil moving means for moving the coil in a direction perpendicular to a winding surface of the coil. The bending by the bending means is repeated while changing the supply length, the amount of movement by the coil moving means is performed within the elastic limit range of the coil wire during at least a part of the bending process, and the coil circumference of the coil is large. A winding device comprising a coil having a small coil circumference inside a coil to produce a spiral non-circular coil.   In a winding device for manufacturing a non-circular coil having a bending portion and a non-bending portion, a wire supply means for sending and gripping a coil wire, a bending guide provided on the wire supply means side, and the bending guide A bending means for bending a coil wire to be bent to form a coil and a rotating mechanism for rotationally driving the bending means are provided, and the bending means is rotated outward from the outer periphery of the coil at a position after the bending of the coil wire. It has a center and repeats rotation in one direction, bends by the bending means while changing the supply length of the coil wire, and inserts a coil with a small coil circumference inside a coil with a large coil circumference to make it non-circular A winding device characterized by manufacturing a coil. A spiral non-circular coil manufactured by the winding method according to any one of claims 1 to 6.

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