JP7536627B2 - Winding device and winding method - Google Patents

Description

The present invention relates to a winding device and a winding method suitable for producing coils to be inserted into slots in the stator core of a generator, motor, etc.

Conventionally, the stator of a generator or motor comprises a cylindrical stator core having multiple teeth (magnetic poles) arranged radially and protruding inwardly with multiple slots opening between them, and a stator coil assembled to the core by fitting the coil sides into the slots. A known method for assembling this stator coil is to manufacture the stator coil separately from the stator core in advance, and then fit this coil into each slot of the core, known as the inserter method.

It is known that the coils used in this inserter method are made by winding wire into a circular shape to form a track, with the straight portions on both sides fitted into slots in the stator core. A winding device has been proposed for obtaining the coils used in this inserter method, which obtains first and second coils connected by a jumper wire (see, for example, Patent Document 1).

This conventional winding device is equipped with a rotatable rotating body and first and second wound members around which the wire is actually wound. The first wound member is positioned on the central axis of the rotating body and rotated together with the rotating body, and the wire is wound around the rotating first wound member to obtain a first coil. After that, the central axis of the second wound member, which has been shifted in the direction of the central axis of rotation, is moved to the position of the central axis of rotation of the first wound member, i.e., the central axis of the rotating body, and at that position the second wound member is rotated together with the rotating body, and the wire is wound around the second wound member to obtain a second coil.

As a result, this conventional winding device is said to be able to wind the first and second coils continuously and without twisting, without cutting the jumper wires.

JP 2006-54967 A

However, in this conventional winding device, after winding the first coil, the central axis of rotation of the second wound member, which has been shifted in the direction of the central axis of rotation, must be moved to the position of the central axis of rotation of the first wound member, i.e., the central axis of rotation of the rotating body. This requires a complicated mechanism for this movement, which increases the unit price of the device.

In addition, the first and second coils obtained by this conventional winding device have a fixed length of jumper wire connecting them. On the other hand, for example, the jumper wires of the coils in a three-phase motor are different for each phase. For this reason, when using a conventional winding device that cannot adjust the length of the jumper wire, there is a problem in that three sets of winding devices are required to obtain coils with different jumper wire lengths to manufacture one motor.

If the length of the jumper wire could be changed, this would be possible even with a single winding device. However, in the above-mentioned conventional winding device, changing the length of the jumper wire connecting a pair of coils requires mechanical adjustment to change the distance between the first and second wound members, and this mechanical adjustment requires a relatively long time.

The object of the present invention is to provide a winding device and a winding method that can obtain a second coil connected to the first coil by a jumper wire without shifting the central axis of rotation of the second wound member, even after a first coil is obtained by winding wire around a first wound member.

Another object of the present invention is to provide a winding device and a winding method that can easily change the length of the jumper wire connecting the first coil and the second coil.

The present invention is an improvement to a winding device that includes a rotating body that is rotationally driven by a main rotating means, and a first wound member and a second wound member that are rotatable about an axis parallel to the central axis of rotation of the rotating body.

Its distinctive configuration is that the first wound member is mounted on the rotating body offset from the central axis of the rotating body, the second wound member has a central axis that coincides with the central axis of the rotating body and is mounted rotatable together with the rotating body, and a first rotating means is provided to rotate the first wound member separately from the rotating body.

In this winding device, it is preferable to provide a means for moving the central axis of rotation of the first wound member toward and away from the central axis of rotation of the second wound member. When the first wound member is attached so as to be movable in the direction of the rotation diameter of the rotating body, it is preferable that the means for moving away from and toward the first wound member includes an operating panel that is rotatably mounted coaxially with the rotating body, and a link piece that connects the periphery of the operating panel to the first wound member.

A second rotating means for rotating the second wound member can also be provided separately from the rotating body, and a moving means for moving the second wound member in the direction of the central axis of rotation can also be provided.

Another invention is an improvement to a winding method that includes a first winding step in which a wire is wound around a rotating first member to obtain a first coil, followed by a second winding step in which a second member is rotated together with the first member about the central axis of rotation of the second member, the second member being shifted in the direction of the central axis of rotation of the first member, and the wire is wound around the second member to obtain a second coil.

Its distinctive feature is that in the first winding process, the first wound member is rotated around an axis that is offset from and parallel to the central axis of rotation of the second wound member in the second winding process, and in the second winding process, the second wound member is rotated together with the first wound member around the central axis of rotation of the second wound member.

In this winding method, it is preferable to carry out a gap adjustment process before the first winding process or between the first winding process and the second winding process, in which the rotational axis of the first wound member is moved toward or away from the rotational axis of the second wound member to maintain a predetermined gap, and it is also possible to carry out a second wound member shifting process, in which the second wound member is shifted in the direction of the rotational axis of the first wound member, before the first winding process or between the first winding process and the second winding process.

In the winding device and winding method of the present invention, the second wound member from which the second coil is obtained is arranged to coincide with the central axis of rotation of the rotating body, but the first wound member from which the first coil is obtained is arranged rotatably, offset from the central axis of rotation of the rotating body, and a first rotating means for rotating the first wound member is provided separately from the rotating body. Therefore, after the first winding step in which the first winding member is rotated by the first rotating means to obtain the first coil, the second winding step in which the second wound member is rotated together with the rotating body to obtain the second coil can be immediately performed without shifting the central axis of rotation of the second wound member.

As a result, a mechanism for shifting the central axis of rotation of the second wound member to the position of the central axis of rotation of the first wound member is no longer necessary, and it is possible to avoid an increase in the unit price of the device due to the presence of such a mechanism.

In addition, when a second coil is obtained by winding wire around the second wound member, this second coil is connected to the first coil, which is made of wire wound around the first wound member, via a jumper wire. The length of this jumper wire is determined by the distance between the first wound member and the second wound member.

However, since the winding device of the present invention is equipped with a connecting/disconnecting means, a gap adjustment process is performed in which the rotational axis of the first wound member is connected to and disconnected from the rotational axis of the second wound member to maintain a predetermined gap. By changing the gap between the first wound member and the second wound member, it is possible to easily change and adjust the length of the jumper wire.

FIG. 2 is a front view of the winding device according to the embodiment of the present invention. FIG. 2 is an enlarged front view of the first and second wound members. 3 is a view corresponding to FIG. 2 and illustrating a state in which the gap between a pair of columnar members in the first and second wound members is narrowed. FIG. 1 is a view of the first and second wound members as viewed from below. FIG. 2 is a cross-sectional view taken along line DD of FIG. 1, showing the connecting/disconnecting means. 6 is a view corresponding to FIG. 5 and illustrating a state in which the gap between the first and second wound members is narrowed by the contacting/separating means. FIG. FIG. 2 is a top view of the winding device as viewed from the direction A in FIG. 11 is a cross-sectional view taken along line BB in FIG. 10. 2 is a cross-sectional view taken along line CC of FIG. 1. 2 is a view corresponding to FIG. 1 , illustrating a state in which a second wound member is shifted in the direction of the central axis of rotation of a first wound member of the winding device in the embodiment of the present invention. 11 is a view corresponding to FIG. 10 and illustrating a state in which a wire is wound around the first wound member to obtain a first coil. 12 is a view corresponding to FIG. 11 , showing a state in which a wire is wound around the second wound member to obtain a second coil that is continuous with the first coil via a jumper wire.

Next, the best mode for carrying out the present invention will be described with reference to the drawings.

Figure 1 shows the winding device 10 of the present invention. Here, we will explain the winding device 10 of the present invention assuming that three mutually orthogonal axes, X, Y, and Z, are set, with the X axis extending horizontally in the lateral direction, the Y axis extending horizontally in the front-rear direction, and the Z axis extending vertically.

The winding device 10 in this embodiment is used to produce a stator coil to be used in the stator of a three-phase AC generator (not shown), and is suitable for producing a pair of coils 6, 7 connected by a jumper wire 5, as shown in FIG. 12.

Returning to FIG. 1, the winding device 10 of the present invention comprises a rotating body 12 mounted on a lower horizontal plate 13a of a base 13 and rotated by a main rotating means 11, and a first wound member 21 and a second wound member 31 mounted on the rotating body 12. Wire 9 is wound sequentially around the first wound member 21 and the second wound member 31 to produce a pair of coils 6, 7 connected by a jumper wire 5 (FIG. 12).

The wire 9 in this embodiment is a coated conductor wire, and a so-called round wire having a circular cross section is used. However, this wire 9 may also be a so-called rectangular wire having a square cross section. The wire 9 is paid out from a wire payout member 8 (Figure 12).

Although not shown, the wire 9 is wound around a spool and stored on the spool, and the wire 9 pulled out from the spool is straightened by a stretching machine (not shown) and then guided to the wire unwinding member 8.

In this embodiment, the wire-feeding member 8 is a rod-shaped member with a hole through which a single wire 9 passes, and this wire-feeding member 8 is attached adjacent to the winding device 10 of the present invention via a wire-feeding member moving means (not shown) that can move this wire-feeding member 8 back and forth at least in the direction of the central axis of rotation of the rotating body 12.

As shown in detail in Figure 1, in this embodiment, the rotating body 12 is pivoted to the lower horizontal plate 13a of the base 13 so as to rotate in a horizontal plane below the lower horizontal plate 13a. The center of the rotating body 12 is attached to the lower end of a cylindrical support shaft 12a, and the support shaft 12a is pivoted vertically to the lower horizontal plate 13a.

A middle horizontal plate 13b is attached to the lower horizontal plate 13a via a support 13d with a specified gap above it, and an upper horizontal plate 13c is further attached to the middle horizontal plate 13b via a support 13d with a specified gap above it.

In this embodiment, the main rotating means for rotating the rotating body 12 is an electric motor 11 attached to the middle horizontal plate 13b so that the rotating center shaft 11a penetrates the middle horizontal plate 13b and protrudes downward, and pulleys 14 are attached to the support shaft 12a protruding above the lower horizontal plate 13a and the rotating center shaft 11a of the electric motor 11 protruding downward through the middle horizontal plate 13b, and a belt 15 is installed between them. As a result, when the electric motor 11 is driven to rotate the rotating center shaft 11a, the rotation is transmitted to the support shaft 12a via the belt 15, and the rotating body 12 attached to its lower end is rotated in a horizontal plane.

The first wound member 21 is offset from the central axis A of the rotating body 12 and is rotatable about an axis B parallel to the central axis A, and the second wound member 31 is arranged so that its central axis coincides with the central axis A of the rotating body 12.

As shown in Figures 2 to 4, the first and second wound members 21, 31 have the same structure, and each of the wound members 21, 31 includes a rotating table 23, 33 attached to the lower end of a base shaft 22, 32 parallel to the central axis A of the rotating body 12 so as to intersect with it, and a pair of columnar members 24, 25, 34, 35 attached to the rotating table 23, 33 so as to protrude downward. The pair of columnar members 24, 25, 34, 35 are respectively arranged to sandwich the central axes A, B of the rotating tables 23, 33, but one of the columnar members 24, 34 is erected movably on a rotation diameter that passes through the central axes A, B of the rotating tables.

That is, in this embodiment, the rotating tables 23, 33 are each rectangular, and rails 26, 36 are attached to the rotating tables 23, 33 in parallel with the rotation diameter passing through the central axes A, B of the rotating tables. A pair of columnar members 24, 25, 34, 35 are provided parallel to the central axes A, B of the rotating tables 23, 33, and a moving block 27, 37 (FIGS. 2 and 3) that engages with the rail 26, 36 and can move back and forth in the longitudinal direction of the rail 26, 36 is attached to the upper part of one of the columnar members 24, 34. By movably mounting the moving block 27, 37 on the rail 26, 36, one of the columnar members 24, 34 is movably erected on a straight line that intersects with the central axes A, B of the rotating tables 23, 33.

The first and second wound members 21, 31 are each provided with a holding means 28, 38 that can change the spacing between the pair of columnar members 24, 25, 34, 35 and maintain the changed spacing. The wire 9 (Figure 12) can be wound around the pair of columnar members 24, 25, 34, 35 that are maintained at a predetermined spacing by the holding means 28, 38.

In this embodiment, a pair of columnar members 24, 25, 34, 35 are wound around the wire 9 to form a coil, but in order to obtain two types of coils with different sizes, the pair has large diameter sections 24a, 25a, 34a, 35a for obtaining a relatively large diameter coil, and small diameter sections 24b, 25b, 34b, 35b formed axially offset to be continuous with the large diameter sections 24a, 25a, 34a, 35a.

The holding means 28, 38 in this embodiment each have an operating rod 28a, 38a inserted through the base shaft 22, 32 which is the central axis A, B of rotation of the first and second wound members 21, 31, a movable plate 28b, 38b which is movably provided on the other columnar member 25, 35 in parallel with the operating rod 28a, 38a and to which the operating rod 28a, 38a is engaged, and a locking piece 28c, 38c attached to one of the columnar members 24, 34 so as to face the movable plate 28b, 38b.

As shown in Figures 2 and 3, the movable plates 28b, 38b are formed with inclined long holes 28ba, 38ba that are inclined with respect to the rotation central axes A, B, and the tips of the locking pieces 28c, 38c, the base ends of which are attached to one of the columnar members 24, 34, are movably locked in the inclined long holes 28ba, 38ba.

As a result, when the operating rod 28a, 38a is moved along the other columnar member 25, 35 together with the movable plate 28b, 38b, the locking piece 28c, 38c moves along the inclined long hole 28ba, 38ba together with the one columnar member 24, 34 in the direction of the rotation diameter of the turntable 23, 33, changing the distance between the pair of columnar members 24, 25, 34, 35.

Then, the movement of the movable plates 28b, 38b relative to the other columnar members 25, 35 is stopped, thereby maintaining the changed spacing between the pair of columnar members 24, 25, 34, 35. In this embodiment, the movable plate 38b is raised as shown in FIG. 2, and the wire 9 is wound around the pair of columnar members 34, 35 with the wider spacing between them, and the pair of columnar members 34, 35 with the wider spacing is set as the normal winding position.

The movable means 60, 70 (Fig. 1) that move or stop the movable plates 28b, 38b via the operating rods 28a, 38a will be described later.

As shown in Figures 2, 3, 5 and 6, a pair of rails 16, 16 parallel to the diameter of the rotating body 12 are provided on the underside of the rotating body 12, sandwiching the diameter of the rotating body 12. A movable base 17 is movably provided on the pair of rails 16, 16, and a long hole 12b into which an operating rod 28a is loosely inserted is formed in the rotating body 12 between the pair of rails 16, 16, extending in the diameter direction. The base shaft 22 of the first wound member 21 is rotatably attached to the movable base 17, and the operating rod 28a inserted into the base shaft 22 is provided to pass through the movable base 17 and the long hole 12b in the rotating body 12. In this way, the first wound member 21 is provided to be rotatable around an axis B offset from the central axis A of rotation of the rotating body 12.

As shown in FIG. 1, the winding device 10 is provided with a first rotating means 40 for rotating the first wound member 21 separately from the rotating body 12. The first rotating means 40 includes a cylindrical member 41 through which the support shaft 12a of the rotating body 12 and the base shaft 32 of the second winding member 31 are inserted, a motor 42 (FIG. 8) for rotating the cylindrical member 41, and a transmission member 43 for transmitting the rotation of the cylindrical member 41 to the first wound member 21 to rotate it.

As shown in Figures 1, 8 and 9, the motor 42 is attached to the middle horizontal plate 13b so that the rotation center shaft 42a passes through the middle horizontal plate 13b and protrudes downward, and pulleys 44 are attached to the cylindrical member 41 protruding above the lower horizontal plate 13a and the rotation center shaft 11a of the electric motor 11, with a belt 45 stretched between them. As a result, when the electric motor 42 is driven to rotate the rotation center shaft 42a, the rotation is transmitted to the cylindrical member 41 via the belt 45, and the first wound member 21 is rotated separately from the rotating body 12 via the transmission member 43 attached to the lower end of the cylindrical member 41. The transmission member 43 will be described later.

On the other hand, the base shaft 32 of the second wound member 31 is arranged to extend through the cylindrical member 41 of the first rotating means 40 and above the middle horizontal plate 13b, and the operating rod 38a inserted into the base shaft 32 is arranged to further penetrate the upper horizontal plate 13c, and this second wound member 31 is arranged so that its central axis of rotation coincides with the central axis of rotation A of the rotating body 12.

In this embodiment, the winding device 10 is provided with a second rotating means 50 that rotates the second wound member 31 separately from the rotating body 12, and a moving means 55 that can move the second wound member 31 in the direction of the central axis of rotation.

As shown in Figures 1 and 9, the second rotating means 50 includes a rotating pulley 51 pivotally supported on the middle horizontal plate 13b, and a motor 52 that rotates the rotating pulley 51. The base shaft 32 of the second wound member 31 is inserted into the rotating pulley 51 in a manner that is non-rotatable but movable in the longitudinal direction, and the motor 52 is attached to the middle horizontal plate 13b so that the rotation center shaft 52a passes through the middle horizontal plate 13b and protrudes downward.

A pulley 53 is attached to the central rotating shaft 52a of the motor 52, which protrudes downward through the middle horizontal plate 13b, and a belt 54 is stretched between this pulley 53 and the rotating pulley 51 through which the base shaft 32 is movably inserted. As a result, when the motor 52 is driven, the rotating pulley 51 rotates via the belt 54, rotating the base shaft 32 that is non-rotatably inserted therethrough, and rotating the second wound member 31 including the base shaft 32.

On the other hand, as shown in Figs. 1, 7 and 8, the moving means 55 has a pair of ball screws 56, 56 arranged parallel to the base shaft 32 of the second wound member 31 between the middle horizontal plate 13b and the upper horizontal plate 13c so as to sandwich the base shaft 32, a motor 57 that rotates the pair of ball screws 56, 56 at a constant speed, and a lifting plate 58 that is mounted on the pair of ball screws 56, 56 and moves up and down by the rotation of the pair of ball screws 56, 56, and the upper end of the base shaft 32 of the second wound member 31 is engaged with the lifting plate 58 so as to be rotatable but not movable up and down. Here, for ease of explanation, the pair of ball screws 56, 56 in Fig. 1 are shown at a 90 degree angle with respect to the pair of ball screws 56, 56 shown in Figs. 7 and 8.

As shown in Figures 1 and 7, the motor 57 is attached to the upper horizontal plate 13c with the rotating shaft 57a penetrating the upper horizontal plate 13c, and pulleys 59a are attached to the rotating shaft 57a and the pair of ball screws 56, 56, respectively, and a belt 59b is stretched across and connected to these pulleys 59a.

As a result, when the motor 57 rotates the pair of ball screws 56, 56, the moving means 55 raises and lowers the lift plate 58 screwed thereto, and the base shaft 32 rises and lowers together with the lift plate 58, moving the second wound member 31 in the direction of the rotation center axis A, as shown in FIG. 10.

Returning to FIG. 1, the winding device 10 of the present invention is provided with a first movable means 60 that moves the movable plate 28b of the holding means 28 in the first wound member 21, and a second movable means 70 that moves the movable plate 38b of the holding means 38 in the second wound member 31.

Explaining the first movable means 60, a donut-shaped operating disk 61 that surrounds the support shaft 12a of the rotating body 12 is attached to the upper end of the operating rod 28a of the first wound member 21 that protrudes above the rotating body 12 so as to be parallel to and coaxial with the rotating body 12. The upper end of the operating rod 28a is attached to this operating disk 61 so as not to be able to move in the axial direction.

However, the upper end of the operating rod 28a is attached so as to allow movement in the diameter direction of the operating disc 61. Specifically, a long hole (not shown) that extends in the diameter direction of the operating disc 61 is formed in the operating disc 61, and the upper end of the operating rod 28a is attached to this long hole so that it can move along the long hole but cannot move in the axial direction.

As shown in Figures 1 and 9, multiple pulleys 62 (four pulleys are shown in Figure 9) are supported on the lower horizontal plate 13a in a rotatable manner around a vertical axis, corresponding to the periphery of the operating disc 61, and a female screw 62a is formed at the center of each pulley 62.

An operating motor 64 is also provided on the lower horizontal plate 13a. This operating motor 64 is capable of adjusting the rotation speed of its rotation center shaft 64a, and a belt 65 is installed between a pulley 64b provided on the rotation center shaft 64a and a pulley 62 on which a female thread 62a is formed. As a result, the operating motor 64 is configured to simultaneously rotate multiple pulleys 62 on which female threads 62a are formed in the same direction at a uniform speed via the belt 65.

Each of the pulleys 62 has a female thread 62a formed on its central axis, and a male screw member 66 is screwed into the female thread 62a. The lower end of the male screw member 66 is provided with a locking member 67 (Figure 1) that locks the periphery of the operating disc 61.

For this reason, in this first movable means 60, when the operating motor 64 is driven to rotate the pulley 62, the male screw member 66 that screws into the female screw 62a of the pulley 62 rises and falls in the vertical direction (Z-axis direction), and the operating disc 61 also rises and falls together with the locking member 67 provided at its lower end, and the operating rod 28a, the upper end of which is locked thereto, is raised and lowered by an amount corresponding to the number of rotations of the male screw member 66.

As shown in Figures 2 and 3, when the operating rod 28a moves up and down, the movable plate 28b engaged with its lower end moves, and one of the columnar members 24 moves in the radial direction of the rotating table 23 together with the locking piece 28c engaged with the inclined long hole 28ba of the movable plate 28b, changing the spacing between the pair of columnar members 24, 25 in the first wound member 21. Then, by stopping the movement of the movable plate 28b, the changed spacing between the pair of columnar members 24, 25 is maintained.

The locking member 67 shown in FIG. 1 engages with the periphery of the donut-shaped operating disk 61 and prevents the operating disk 61 from moving up and down independently, but is configured to allow the operating disk 61 to rotate, and does not impede the rotation of the rotating base 12 together with the operating disk 61.

As shown in Figures 2 to 4, the first wound member 21 is provided on the rotating table 23 with a clamping tool 68 that clamps the end of the wire 9 (Figure 4) in conjunction with the movable plate 28b, and the movable plate 28b facing the clamping tool 68 is formed with an inclined portion 28bb (Figures 2 and 3) that operates the clamping tool 68.

The clamping device 68 in the figure has a fixed piece 68b fixed to its main body 68a, a movable piece 68c (Fig. 4) that extends and retracts from the main body 68a, and an operating piece 68d (Figs. 2 and 3) whose tip abuts against the inclined portion 28bb of the movable plate 28b. When the movable plate 28b descends as shown in Fig. 3 and the gap between the pair of columnar members 24, 25 narrows, the operating piece 68d is guided by the inclined portion 28bb and protrudes from the main body 68a as shown by the dashed line in Fig. 4, widening the gap between the fixed piece 68b and the movable piece 68c, allowing the wire 9 to be inserted and removed between them.

As shown in FIG. 2, when the movable plate 28b rises and the gap between the pair of columnar members 24, 25 widens and the normal winding position is reached, the operating piece 68d is guided by the inclined portion 28bb and sinks into the main body 68a, urging the movable piece 68c in a direction to abut against the fixed piece 68b. If the wire 9 is inserted between them as shown by the solid line in FIG. 4, the wire 9 can be clamped.

As shown in Figures 1 and 7, the second moving means 70, which moves the movable plate 38b of the second wound member 31 together with the operating rod 38a, has a ball screw 71 provided at the top penetrating the upper horizontal plate 13c of the operating rod 38a, a female screw member 72 pivoted to the upper horizontal plate 13c so as to screw into the ball screw 71, and a motor 73 that rotates the female screw member 72.

The motor 73 is capable of adjusting the rotation speed of its central axis 73a and is attached to the upper horizontal plate 13c. A pulley 74 is coaxially provided on the central axis 73a and the female screw member 72, and a belt 75 is installed between them. The motor 73 is configured to rotate the female screw member 72 via the pulley 74 and belt 75.

The operating rod 38a is inserted through the base shaft 32 so that it can move axially but cannot rotate relative to the base shaft 32, and the female screw member 72 is pivotally supported on the upper horizontal plate 13c so that it can rotate but cannot rise or fall. Therefore, when the female screw member 72 is rotated by the motor 73, the second moving means 70 is configured so that the ball screw 71 connected to the operating rod 38a rises and falls, moving the operating rod 38a together with the movable plate 38b in the axial direction of the base shaft 32.

As shown in Figures 2 and 3, when the operating rod 38a moves together with the movable plate 38b, one of the columnar members 34 moves in the radial direction of the rotating table 33 together with the locking piece 38c that is locked in the inclined long hole 38ba of the movable plate 38b, changing the spacing between the pair of columnar members 34, 35 in the second wound member 31. Then, by stopping the lifting and lowering of the movable plate 38b, the changed spacing between the pair of columnar members 34, 35 is maintained.

As shown in FIG. 1, the winding device 10 of the present invention is provided with a separation means 80 for separating the rotation axis B of the first wound member 21 from the rotation axis A of the second wound member 31. The separation means 80 has a control panel 81 fitted into the support shaft 12a of the rotating body 12 so as to be rotatable about the support shaft 12a, a link piece 82 connecting the periphery of the control panel 81 to the base shaft 22 of the first wound member 21, a rotation means 85 for rotating the control panel 81, and a prohibition means 90 for prohibiting the rotation of the control panel 81 relative to the rotating body 12.

Here, as shown in Figures 2, 5 and 6, the transmission member 43 in the first rotating means 40 described above has an intermediate pulley 43a that is stacked in two stages coaxially at the pivot point of the link piece 82 of the operation panel 81, a member side pulley 43b that is stacked on the link piece 82 on the base shaft 22 of the first wound member 21, an operation side pulley 43c that is coaxially mounted on the lower end of the cylindrical member 41, a first belt 43d that connects the operation side pulley 43c and the intermediate pulley 43a, and a second belt 43e that connects the intermediate pulley 43a and the member side pulley 43b.

As shown in Figures 1, 5, 6 and 10, an arm 83 with a protrusion 83a at its tip extends in the direction of the rotation diameter and has its base end attached to the operation panel 81, and the rotation means 85 includes an operation plate 86 with a notch 86a formed so that the protrusion 83a can engage with the tip of the arm 83, an X-axis actuator 87 that moves the operation plate 86 back and forth in the X-axis direction so as to insert and remove the notch 86a from the protrusion 83a, and a Y-axis actuator 88 that moves the X-axis actuator 87 together with the operation plate 86 in the Y-axis direction.

The Y-axis actuator 88 in the figure is equipped with a ball screw 88b that is rotated by a servo motor 88a, and a follower 88c that moves in parallel along a long housing 88d that is screwed into the ball screw 88b and contains the ball screw 88b. The housing 88d of the Y-axis actuator 88 is attached to the lower horizontal plate 13a of the base 13 in the Y-axis direction.

The X-axis actuator 87 in the figure is a fluid pressure cylinder that uses fluid pressure to make rod 87b appear and disappear from main body 87a, and a flat plate 89 is attached to follower 88c of Y-axis actuator 88, and main body 87a is attached to flat plate 89 with rod 87b facing the X-axis direction. A rail 89a is provided on flat plate 89 parallel to rod 87b, and a movable platform 89b is movably mounted on rail 89a, with the tip of rod 87b attached to movable platform 89b. An operating plate 86 is attached to movable platform 89b.

Then, the Y-axis actuator 88 positions the notch 86a of the operation plate 86 facing the protrusion 83a of the arm 83, and the rod 87b of the X-axis actuator 87 protrudes from the main body 87a to insert the notch 86a of the operation plate 86 into the protrusion 83a of the arm 83 (Figure 6). In this state, the Y-axis actuator 88 moves the operation plate 86 together with the X-axis actuator 87 in the Y-axis direction, thereby making it possible to rotate the operation panel 81.

When the control panel 81 is rotated, its periphery moves in the circumferential direction, and as shown in Figures 5 and 6, a link piece 82, one end of which is pivotally supported around the periphery, moves the base shaft 22 of the first wound member 21, which is pivotally supported at the other end, in the radial direction along rails 16, 16 extending in the radial direction of the rotating body 12, so that the rotation center axis B of the first wound member 21 moves toward and away from the rotation center axis A of the second wound member 31, which is coaxially mounted on the rotating body 12.

On the other hand, the prohibition means 90 has a number of locking holes 83b formed continuously in the circumferential direction of the operation panel 81 near the operation panel 81 of the arm 83, and a protrusion insertion/removal device 91 provided on the rotating base 12 for selectively inserting and removing the locking protrusions 91a into and from the multiple locking holes 83b.

This protrusion insertion/removal device 91 is configured so that the locking protrusion 91a protrudes and retracts from the main body 91c in a direction perpendicular to the operating piece 91b by causing the operating piece 91b to protrude and retract into the main body 91c, and the main body 91c is attached to the rotating body 12 facing the arm 83 with the locking protrusion 91a facing the locking hole 83b and the operating piece 91b facing the diameter direction of the rotating body 12.

On the other hand, a working plate 92 is attached to the movable base 89b of the rotating means 85 in parallel with the operating plate 86. As shown in FIG. 6, when the movable base 89b moves and the notch 86a of the operating plate 86 enters the protrusion 83a of the arm 83, the working plate 92 retracts the operating piece 91b of the protrusion insertion/removal device 91 into its main body 91c, disengaging the protrusion 91a from the locking hole 83b. When the movable base 89b moves in the opposite direction and the notch 86a of the operating plate 86 disengages from the protrusion 83a of the arm 83 as shown in FIG. 5, the working plate 92 moves away from the operating piece 91b of the protrusion insertion/removal device 91, causing the operating piece 91b to protrude from the main body 91c.

The protrusion insertion/removal device 91, which has an operating piece 91b protruding from the main body 91c, is configured so that the locking protrusion 91a enters the locking hole 83b and prohibits the operation panel 81 from rotating relative to the rotating body 12. This maintains the distance between the rotation center axis B of the first wound member 21 and the rotation center axis A of the second wound member 31.

Next, we will explain the winding method of the present invention.

The winding method of the present invention is a method in which, after a first winding step in which wire 9 is wound around a rotating first wound member 21 to obtain a first coil 7, a second winding step is performed in which a second wound member 31, which is offset in the direction of the central axis B of the first wound member 21, is rotated together with the first wound member 21 around the central axis A of the second wound member 31 to wind wire 9 around the second wound member 31 to obtain a second coil 6.

The distinctive feature is that in the first winding process, the first wound member 21 is rotated around an axis B that is offset from the central axis A of the second wound member 21 in the second winding process and parallel to the central axis A of the second wound member 21 to wind the wire 9, and in the second winding process, the second wound member 31 is rotated together with the first wound member 21 around the central axis A of the second wound member 31 to wind the wire 9.

Then, it is preferable to carry out a gap adjustment process before the first winding process or between the first winding process and the second winding process, in which the rotational center axis B of the first wound member 21 is moved toward or away from the rotational center axis A of the second wound member 31 to adjust the length of the wire 9 connecting the first coil 7 and the second coil 6 to the desired length, and it is also possible to carry out a second wound member shifting process, in which the second wound member 31 is shifted in the direction of the rotational center axis B of the first wound member 21, before the first winding process or between the first winding process and the second winding process.

This winding method is based on the premise that a first wound member 21 and a second wound member 31 are provided that are offset in the direction of the central axis B of rotation of the first wound member 21. Therefore, in this embodiment, the winding device 10 described above is used, and the spacing adjustment process using the contact means 80 and the second wound member shifting process using the moving means 55 are performed before the first winding process, to obtain a stator coil 12 in which the first coil 7 and second coil 6 are connected by a jumper wire 5. The operation is automatically controlled by a controller (not shown), and each process is described in detail below.

<Preparation process>
In order to use the winding device 10, the following steps are first carried out as preparation steps prior to the first winding step.

<Wire preparation process>
In this step, the wire 9 is unwound from the wire unwinding member 8. Specifically, the wire 9 is prepared by being wound around a spool (not shown) and stored. The wire 9 is pulled out from the spool, and the wire 9 straightened by a stretching machine (not shown) is inserted into the wire unwinding member 8 and clamped by the clamping tool 68.

When the clamping tool 68 clamps the wire 9, first, the rotating body 12 is rotated by the electric motor 11, which is the main rotating means, and the first wound member 21 is opposed to the wire-feeding member 8 as shown in FIG. 4. In the first wound member 21, the first moving means 60 lowers the movable plate 28b to narrow the pair of columnar members 24, 25 as shown in FIG. 3. As a result, in the clamping tool 68 provided on the wound member 21, the operating piece 68d is guided by the inclined portion 28bb of the movable plate 28b and protrudes from the main body 68a, and the distance between the fixed piece 68b and the movable piece 68c is enlarged as shown by the dashed line in FIG. 4.

In this state, the wire-feeding member 8 is moved, and the end of the wire 9 protruding from it is inserted between the fixed piece 68b and the movable piece 68c. Then, as shown in FIG. 2, the movable plate 28b is raised to widen the gap between the pair of columnar members 24, 25 and bring them to the normal winding position. This causes the operating piece 68d of the clamping tool 68 to retract into the main body 68a, and as shown by the solid line in FIG. 4, the movable piece 68c is urged in the direction of abutting against the fixed piece 68b, clamping the wire 9 inserted therebetween.

<Second winding member shifting process>
In this step, as shown in Fig. 10, the second wound member 31 is disposed so as to be shifted in the direction of the rotational axis B of the first wound member 21. The second wound member 31 is moved in the axial direction by the moving means 55 and the second moving means 70 shown in Fig. 1, and the moving means 55 rotates a pair of ball screws 56, 56 by a motor 57 to raise and lower the base shaft 32 together with the lift plate 58. In synchronization with the raising and lowering of the base shaft 32, the second moving means 70 rotates the female screw member 72 by its motor 73 to raise and lower the ball screw 71, and moves the operating rod 38a provided at the lower end thereof in the axial direction together with the base shaft 32.

As a result, as shown in FIG. 10, the second wound member 31 moves in the direction of the central axis of rotation A, and when it reaches the desired position, the movement is stopped, thereby shifting the second wound member 31 in the direction of the central axis of rotation B of the first wound member 21.

After the second wound member 31 is shifted in the direction of the central axis B of rotation of the first wound member 21, if the movable plate 38b of the second wound member 31 is lowered relative to the rotating table 33 and the gap between the pair of columnar members 34, 35 is narrowed as shown in FIG. 3, the second moving means 70 raises the movable plate 38b to widen the gap between the pair of columnar members 34, 35 as shown in FIG. 2, and return them to the normal winding position.

<Gap adjustment process>
In this process, the rotation axis B of the first wound member 21 is moved toward and away from the rotation axis A of the second wound member 31, maintaining a predetermined distance therebetween. Since the winding device 10 is used, the adjustment of this distance is performed by the moving means 80 shown in FIG. 1, and the maintenance of this distance is performed by the prohibiting means 90.

The predetermined interval is a predetermined interval that is calculated so that the length of the wire 9 that becomes the jumper wire 5 connecting the first coil 7 made of the wire 9 wound around the first wound member 21 and the second coil 6 made of the wire 9 wound around the second wound member 31, as shown in FIG. 12, is a desired length.

The winding device 10 has a separation means 80 in which the rotation means 85 rotates the control panel 81, and as shown in Figures 5 and 6, moves the first wound member 21 in the radial direction along the rails 16, 16 extending in the radial direction of the rotating body 12 via the link piece 82, thereby separating the rotation center axis B of the first wound member 21 from the rotation center axis A of the second wound member 31.

When the distance between the rotational axis A of the second wound member 31 and the rotational axis B of the first wound member 21 reaches a predetermined distance, the prohibiting means 90 causes the operating piece 91b to protrude from the main body 91c and the locking protrusion 91a to enter the locking hole 83b, thereby prohibiting the rotation of the operation panel 81 relative to the rotating body 12. This maintains the distance between the rotational axis A of the second wound member 31 and the rotational axis B of the first wound member 21.

<First winding process>
In this step, the first wound member 21 is rotated to wind the wire 9 around the pair of columnar members 24, 25. In this embodiment, since the winding device 10 is used, this winding step is performed by rotating the first wound member 21 with the first rotating means 40. Specifically, as shown in Fig. 11, the electric motor 42 (Fig. 8) is driven to rotate the cylindrical member 41, which in turn rotates the first wound member 21 via a transmission member 43 attached to the lower end of the cylindrical member 41.

In this embodiment, the pair of columnar members 24, 25 have large diameter portions 24a, 25a and small diameter portions 24b, 25b, but the figure shows a case in which wire 9 is wound around the small diameter portions 24b, 25b to obtain a coil 7 with a relatively small diameter. Therefore, the first wound member 21 is rotated with the wire payout member 8 facing the small diameter portions 24b, 25b.

At this time, it is preferable to move the wire-feeding member 8 in the direction of the central axis B of rotation of the first wound member 21 while facing the small diameter portions 24b and 25b, and wind the wire 9 fed from the wire-feeding member 8 in a spiral shape around the small diameter portions 24b and 25b, thereby obtaining a first coil 7 with a relatively small diameter in which adjacent wires 9 are wound in an aligned manner so that they are parallel to each other and in close contact with each other.

<Second winding process>
In this step, the second wound member 31 is rotated together with the first wound member 21, and the wire 9 is wound around a pair of columnar members 34, 35 of the second wound member 31. In this second winding step, the second wound member 31 is rotated together with the first wound member 21, but since the second wound member 31 is offset in the axial direction of the first wound member 21, even if the first wound member 21 rotates around the second wound member 31, this does not hinder the second wound member 31 from winding the wire 9.

In this embodiment, the winding device 10 is used, so that the second wound member 31 is rotated by the second rotating means 50, and the first wound member 21 is rotated around the second wound member 31 by rotating the rotating body 12 with the main rotating means 11.

Specifically, as shown in FIG. 12, the second rotating means 50 rotates the second wound member 31 by driving a motor 52 (FIG. 8) to rotate the base shaft 32 that is non-rotatably inserted through the rotating pulley 51.

On the other hand, the electric motor 11, which is the main rotating means, is driven to rotate the support shaft 12a, which rotates the rotating body 12 attached to its lower end in a horizontal plane, causing the first wound member 21, which is biased against the rotating body 12, to rotate around the second wound member 31, centering on the second wound member 31. The rotation of the rotating body 12 is synchronized with and at the same speed as the rotation of the second wound member 31 by the second rotating means 50.

When the support shaft 12a is rotated to rotate the rotating body 12, the first rotating means 40 drives its electric motor 42 to rotate the cylindrical member 41 in the same direction and at the same speed in synchronization with the rotation of the support shaft 12a, thereby maintaining the relative positional relationship of the first wound member 21 to the second wound member 31. This prevents the length of the jumper wire 5 from changing due to a change in the relative positional relationship, and winds the wire 9 around the pair of columnar members 34, 35 of the second wound member 31 as shown in FIG. 12.

The pair of columnar members 34, 35 in the second wound member 31 also have large diameter portions 34a, 35a and small diameter portions 34b, 35b, but the figure shows a case in which wire 9 is wound around the small diameter portions 34b, 35b to obtain a coil 6 with a relatively small diameter. Therefore, the second wound member 31 is rotated together with the first wound member 21 with the wire payout member 8 facing the small diameter portions 34b, 35b.

At this time, it is preferable to move the wire-feeding member 8 in the direction of the central axis A of rotation of the second wound member 31 while facing the small diameter portions 34b and 35b, and wind the wire 9 fed from the wire-feeding member 8 in a spiral shape around the small diameter portions 34b and 35b, thereby obtaining a relatively small diameter second coil 6 in which adjacent wires 9 are wound in an aligned manner so that they are parallel to each other and in close contact with each other.

As shown in FIG. 12, after the first winding process, a second winding process is performed to wind the wire 9 around the second wound member 31 to obtain the second coil 6. This second coil 6 is connected to the first coil 7 made of the wire 9 wound around the first wound member 21 via a jumper wire 5. In this invention, a stator coil made of the first and second coils 6, 7 connected via the jumper wire 5 can be produced.

Here, in the winding method of the present invention using the winding device 10, after the first winding step in which the first winding member 21 is rotated by the first rotating means 40 to obtain the first coil 7, the second winding step in which the second winding member 31 is rotated together with the rotating body 12 to obtain the second coil 6 can be performed immediately without shifting the central axis of rotation of the second winding member 31. As a result, the mechanism required in conventional winding devices for shifting the central axis of rotation of the second winding member to the position of the central axis of rotation of the first winding member is no longer necessary, and it is possible to avoid the unit price of the device being pushed up due to the presence of such a mechanism.

The length of the jumper wire 5 connecting the first and second coils 6, 7 is determined by the distance between the first wound member 21 and the second wound member 31. On the other hand, the length of the jumper wire 5 connecting the first and second coils 6, 7 will be different for each phase of the coils in the three-phase motor to be obtained, and even if the winding specifications of the first and second coils 6, 7 are the same, there is a demand for the length of the jumper wire 5 to be different.

On the other hand, in the winding method of the present invention, a gap adjustment process is performed before the first winding process, in which the rotational center axis B of the first wound member 21 is moved toward or away from the rotational center axis A of the second wound member 31 to maintain a predetermined gap. Therefore, by changing the gap between the first wound member 21 and the second wound member 31 in the gap adjustment process, the length of the jumper wire 5 can be easily changed and adjusted.

In the above winding device 10, which is provided with a second rotating means 50 for rotating the second wound member 31 separately from the rotating body 12, the second rotating means 50 makes it possible to adjust the rotational position of the second wound member 31 relative to the first wound member 21, and also makes it possible to finely adjust the length of the jumper wire 5 extending between the second wound member 31 and the first wound member 21.

After obtaining the first coil 7 and the second coil 6 connected via the jumper wire 5, they are detached from the first and second wound members 21, 31 and transported, and in the subsequent process, the first and second coils 6, 7 are inserted into the slots of a core (not shown) while connected via the jumper wire 5 using the conventional inserter method.

Here, the procedure for removing the first coil 7 and the second coil 6 from the first and second wound members 21, 31 will be explained. First, the first coil 7 and the second coil 6 formed on the first and second wound members 21, 31 are grasped by a shape maintaining tool (not shown) to maintain their shape. After that, the wire 9 is prohibited from being newly paid out from the wire pay-out member 8, and the wire 9 extending from the wire pay-out member 8 to the second coil 6 is cut by a cutting device or the like. This separates the first coil 7 and the second coil 6 from the wire pay-out member 8.

At this time, it is preferable to bundle the wire 9 constituting the first coil 7 and the second coil 6 using adhesive tape or the like, if necessary. When bundling the wire 9 with this adhesive tape, it is possible to bundle the wire 9 floating between the pair of columnar members 24, 25, 34, and 35 around which the wire 9 is wound.

Then, the first coil 7 and the second coil 6 consisting of the wire 9 wound around the pair of columnar members 24, 25, 34, 35 are taken out from the first and second wound members 21, 31. However, when the second coil 6 is obtained, the second coil 6 is shifted in the axial direction of the first coil 7. When these are to be taken out side by side, it is preferable to shift the second wound member 31 from which the second coil 7 is obtained in the direction of the central axis A of rotation and to align the second wound member 31 together with the second coil 7 with the first wound member 21 from which the first coil 7 is obtained.

The axial movement of the second wound member 31 is performed by the moving means 55 and second moving means 70 shown in FIG. 1. The moving means 55 raises and lowers the base shaft 32, and in synchronization with the raising and lowering of the base shaft 32, the second moving means 70 moves the operating rod 38a axially together with the base shaft 32. This moves the second wound member 31 in the direction of the rotation center axis A, and the second wound member 31 can be aligned with the first wound member 21 from the state shown in FIG. 12 to the state shown in FIG. 1.

On the other hand, in the first and second wound members 21, 31, in order to extract the first coil 7 and the second coil 6, which are made of the wire 9 wound around a pair of columnar members 24, 25, 34, 35, the distance between the pair of columnar members 24, 25, 34, 35 around which the wire 9 is wound is narrowed.

Specifically, the pair of columnar members 24, 25 in the first wound member 21 narrows the gap between them by lowering the movable plate 38b with the first moving means 60 (Fig. 1) as shown in Fig. 3, and the pair of columnar members 34, 35 in the second wound member 31 narrows the gap between them by lowering the movable plate 38b with the second moving means 70 (Fig. 1).

As a result, the first coil 7 and the second coil 6 shown in FIG. 12, which are made of wire 9 wound around a pair of columnar members 24, 25, 34, and 35, become loose, and the first coil 7 and the second coil 6 connected by the jumper wire 5 are detached from the pair of columnar members 24, 25, 34, and 35, respectively.

In this removal, the first coil 7 and the second coil 6, which are held by a shape maintainer (not shown) and, if necessary, bound together with adhesive tape to maintain their shape, are moved downward together with the shape maintainer (not shown) and pulled out downward from the released lower end surfaces of the pair of columnar members 24, 25, 34, and 35.

After the first coil 7 and the second coil 6 are removed from the pair of columnar members 24, 25, 34, 35, a new winding can be restarted. In this new winding spacing adjustment process, by changing the spacing between the first wound member 21 and the second wound member 31, it is possible to obtain the second coil 6 connected to the first coil 7 via jumper wires 5 of different lengths.

In the above embodiment, the wire-feeding member 8 is described as one that passes a single wire 9, but the wire-feeding member 8 may also pass multiple wires 9 in a parallel, closely-contacted state. When the wire-feeding member 8 is one that pays out multiple wires 9, it is preferable to use a rod-shaped member with a long hole formed therein that allows multiple wires 9 to pass through.

In the above embodiment, the gap adjustment process is performed in the preparation stage before the first winding process. However, this gap adjustment process may be performed after the first coil is obtained and before the second coil is obtained, that is, between the first winding process and the second winding process. This also makes it possible to change and adjust the length of the jumper wire 5 connecting the first coil 7 and the second coil 6.

In the above embodiment, the wire 9 is wound around the small diameter portions 24b, 25b, 34b, and 35b of the pair of columnar members 24, 25, 34, and 35 to obtain the coils 6 and 7 with relatively small diameters. However, the wire 9 may be wound around the large diameter portions 24a, 25a, 34a, and 35a of the pair of columnar members 24, 25, 34, and 35 to obtain the coils 6 and 7 with relatively large diameters. In addition, if it is not necessary to obtain multiple types of coils, it is not necessary to form the small diameter portions 24b, 25b, 34b, and 35b and the large diameter portions 24a, 25a, 34a, and 35a of the pair of columnar members 24, 25, 34, and 35.

In the above embodiment, the second wound member shifting process, in which the second wound member 31 is shifted in the direction of the rotational center axis B of the first wound member 21, is performed in the preparation stage before the first winding process. However, this second wound member shifting process may be performed after the first coil 7 is obtained and before the second coil 6 is obtained, that is, between the first winding process and the second winding process. Even in this case, even if the first wound member 21 rotates around the second wound member 31 in the second winding process, there is no hindrance to the second wound member 31 winding the wire 9.

In addition, in the above-described embodiment, when removing the first coil 7 and the second coil 6 consisting of the wire 9 wound around a pair of columnar members 24, 25, 34, 35, the second wound member 31 is arranged together with the second coil 7 on the first wound member 21 from which the first coil 7 is obtained, and then the spacing between the pair of columnar members 24, 25, 34, 35 around which the wire 9 is wound is narrowed and removed.

However, instead of aligning the second wound member 31 with the first wound member 21, the spacing between the pair of columnar members 24, 25, 34, 35 may be narrowed and the first coil 7 and second coil 6 may be taken out from them. In this case, there is no need to move the second wound member 31 in the axial direction, so the moving means 55 for moving the second wound member 31 in the axial direction can be eliminated.

Furthermore, in the above-described embodiment, a second rotating means 50 is provided to rotate the second wound member 31 separately from the rotating body 12, and in the second winding process, the second wound member 31 is rotated by the second rotating means 50 while the main rotating means 11 rotates the rotating body 12, thereby rotating the first wound member 21 around the second wound member 31.

However, if it is not necessary to adjust the rotational position of the second wound member 31 relative to the first wound member 21, the second wound member 31 may be directly attached coaxially to the rotating body 12, and the second wound member 31 may be rotated together with the first wound member 21 by the main rotating means 11. In this case, the second rotating means 50 for rotating the second wound member 31 separately from the rotating body 12 can be eliminated.

6 Second coil 7 First coil 9 Wire 10 Winding device 11 Motor (main rotating means)
Reference Signs List 12 Rotating body 21 First wound member 31 Second wound member 40 First rotating means 50 Second rotating means 55 Moving means 80 Contact means 81 Operation panel 82 Link piece A Rotation central axis of rotating body (second wound member) B Rotation central axis of first wound member

Claims (6)

A winding device including a rotating body (12) that is rotationally driven by a main rotating means (11), and a first wound member (21) and a second wound member (31) that are rotatably provided around axes (A, B) parallel to a rotation center axis (A) of the rotating body (12),
the first wound member (21) is provided on the rotating body (12) so as to be displaced from a rotation central axis (A) of the rotating body (12) and movable in a rotational diameter direction of the rotating body (12);
the rotating body (12) is provided with an operation panel (81) rotatably and coaxially with the rotating body (12); and a link piece (82) that connects a periphery of the operation panel (81) to the first wound member (21). A connecting/disconnecting means (80) is provided that connects and disconnects a rotation central axis (B) of the first wound member (21) to and from a rotation central axis (A) of the second wound member (31);
the second wound member (31) has a rotation central axis that coincides with the rotation central axis (A) of the rotating body (12) and is provided rotatably together with the rotating body (12);
a first rotating means (40) for rotating the first wound member (21) provided separately from the rotating body (12), 2. The winding device according to claim 1, further comprising a second rotating means (50) for rotating the second wound member (31) separately from the rotating body (12). 3. The winding device according to claim 1, further comprising a moving means (55) for moving the second wound member (31) in the direction of the central axis (A) of rotation. A winding method including a first winding step of winding a wire (9) around a rotating first wound member (21) to obtain a first coil (7), and a second winding step of rotating a second wound member (31) provided offset in the direction of a rotational axis (B) of the first wound member (21) together with the first wound member (21) about a rotational axis (A) of the second wound member (31) to wind the wire (9) around the second wound member (31) to obtain a second coil (6),
In the first winding step, the first wound member (21) is rotated about an axis (B) that is offset from and parallel to the rotation central axis (A) of the second wound member (21) in the second winding step,
a gap adjustment process for moving the rotation axis (B) of the first wound member (21) away from the rotation axis (A) of the second wound member (31) to maintain a predetermined gap therebetween is performed before the first winding process or between the first winding process and the second winding process;
the second winding step rotates the second wound member (31) together with the first wound member (21) around a rotation central axis (A) of the second wound member (31). 5. The winding method according to claim 4, wherein a second winding member shifting step of shifting the second winding member (31) in the direction of the rotational center axis (B) of the first winding member ( 21 ) is performed before the first winding step or between the first winding step and the second winding step. A winding method including a first winding step of winding a wire (9) around a rotating first wound member (21) to obtain a first coil (7), and a second winding step of rotating a second wound member (31) provided offset in the direction of a rotational axis (B) of the first wound member (21) together with the first wound member (21) about a rotational axis (A) of the second wound member (31) to wind the wire (9) around the second wound member (31) to obtain a second coil (6),
In the first winding step, the first wound member (21) is rotated about an axis (B) that is offset from and parallel to the rotation central axis (A) of the second wound member (21) in the second winding step,
a second winding member shifting step of shifting the second winding member (31) in the direction of the rotation axis (B) of the first winding member (21) is carried out before the first winding step or between the first winding step and the second winding step,
the second winding step rotates the second wound member (31) together with the first wound member (21) around a rotation central axis (A) of the second wound member (31).

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