JP2002198245A - Winding device and winding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding device for winding a wire material around a winding frame, that can stably wind the wire material and effective prevent irregular windings. SOLUTION: An elliptical circular winding frame 4 is housed in a winding frame housing hole 11 of a rotary head 10. The rotary head 10 is arranged opposite to a fixed head 2, and a rotating central shaft 3 of the fixed head 10 is engaged with the hollow part of the winding frame 4. The rotary head 10 is driven by a drive motor 15, and it is introduced to a guide groove 6 of the fixed head 2, and then a rectangular-shape wire 5, secured in the guide groove 12 of the rotary head 10, is wound around the outer circumference of the winding frame 4. The rotary head 10 is slidable along a guide rail 21 is a direction, orthogonally crossing the rotating central shaft 3. Thus, the rotation center of the winding frame 4 is changed on an end 4A side and an end 4B side of the winding frame 4, depending on the winding step.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for winding a wire around a bobbin.

[0002]

2. Description of the Related Art In addition to a bobbin having a true circular cross section (core), various forms of bobbin such as an oval bobbin are available as a bobbin in a winding device for winding a wire on a bobbin. possible.

[0003]

However, in the case of winding on a bobbin other than a true circular cross section, the angle of incidence of the wire is not constant, so that the winding may not be performed stably. For example, when the wire 102 is wound around an elliptical winding frame 101 as shown in FIG. 14, the incident angle α of the wire 102 when the winding frame 101 is at the rotation position indicated by the solid line, and the winding frame 101 Wire rod 1 at the rotational position indicated by the dashed line
02 greatly differs from the incident angle β, and the winding cannot be performed stably.

[0004] Such a problem is remarkable particularly when an edgewise coil is formed by a rectangular wire. More specifically, as a coil formed of a flat wire, a flat wise coil having a wide flat surface of the flat wire directed toward the inner circumferential direction of the winding as shown in FIG. 15 and a wide surface of the flat wire as shown in FIG. There is an edgewise coil directed in the axial direction of the winding. In the edgewise coil, if the incident angle in the winding is unstable, the wire material is particularly likely to fall or bulge.

The present invention has been made in view of such a problem, and in a winding device for winding a wire around a winding frame, it is possible to perform stable winding and effectively reduce winding disturbance. The aim is to provide something that can be prevented.

[0006]

According to a first aspect of the present invention, in a winding device for winding a wire around a winding frame, a center position of the winding can be changed with respect to the winding frame in accordance with a winding process. did.

In the second invention, the center of the winding is changed so that the incident angle of the wire with respect to the winding frame is substantially constant.

In the third aspect of the invention, the winding frame has an oval shape, and the center of the winding is alternately changed to the vicinity of both ends in the longitudinal direction of the oval every half turn around the winding frame.

In a fourth aspect, the center of the winding is a rotation center of the winding frame.

According to a fifth aspect of the present invention, there is provided a fixed head having a rotation center axis fixed thereto, a rotation head for holding the winding frame so as to rotate integrally with the rotation center axis, and the rotation head having the rotation center axis. Rotation driving means for driving rotation around
Rotating head sliding means for sliding the rotating head in a direction perpendicular to the rotation center axis with respect to the rotation center axis.

In a sixth aspect of the present invention, winding is performed in a gap between the rotary head and the fixed head, and the rotary head is movable in a direction away from the fixed head. And a biasing unit for biasing the fixed head toward the fixed head.

In a seventh aspect of the present invention, a guide groove for introducing a wire into the fixed head is formed, and a depth of the guide groove is set at a portion where the wire already wound on the core overlaps the guide groove. Is equal to or greater than the thickness of the wire.

[0013] In the eighth invention, the center of the winding is the center of the revolution of the wire feeding means revolving around the winding frame.

In a ninth aspect, the wire is a flat wire.

[0015] In the tenth aspect, the flat wire is wound with its wide surface directed in the axial direction of the bobbin.

According to an eleventh aspect of the present invention, in the winding method of winding a wire around a winding frame, the position of the center of the winding is changed with respect to the winding frame according to a winding process.

In the twelfth aspect, the center of the winding is changed so that the incident angle of the wire with respect to the winding frame is substantially constant.

In the thirteenth aspect, the center of the winding is alternately changed to the vicinity of both ends in the longitudinal direction of the oval every half-turn around the oval winding frame.

[0019]

According to the winding apparatus of the first invention and the winding method of the eleventh invention, the center position of the winding (for example, the rotation of the winding frame in the fourth invention) depends on the winding process. The center of rotation (the center of revolution of the wire rod feeding means in the eighth invention) can be changed. Can be solved by adjusting the position, and stable winding can be performed. Such a winding device and a winding method are particularly effective when the flat wire (the ninth invention) is wound with the wide surface facing the axial direction of the winding frame (the tenth invention). Winding disturbance due to falling or bulging of the flat wire can be effectively prevented.

In the winding device of the second invention and the winding method of the twelfth invention, the angle of incidence on the bobbin is substantially constant, so that the introduction of the wire into the bobbin is stable and the winding is stabilized. And winding disturbance can be effectively prevented.

In the winding apparatus according to the third invention and the winding method according to the thirteenth invention, the center of the winding is alternately arranged near both ends of the oval for each half turn of the winding on the oval winding frame. Because it moves
The winding with respect to the end of the bobbin can be performed at a substantially constant incident angle, and the winding is stabilized.

According to a fifth aspect of the present invention, a rotary drive means for holding the bobbin on the rotary head and rotating the rotary head about a rotation center axis, and a rotary head for sliding the rotary head in a direction perpendicular to the rotation center axis. Since it has a sliding means, a winding device capable of changing the rotation center of the winding frame,
It can be configured rationally without complicating the configuration.

In the sixth aspect of the present invention, the winding is formed in a gap between the rotary head and the fixed head, and when the winding of a plurality of layers (rows) is formed in the rotation axis direction of the winding frame, the rotary head is connected to the fixed head. Moving in the direction of separation, a space for winding a new layer (row) is secured, but the rotating head is urged to the fixed head side by the urging means, so the wires are in close contact. In this state, multilayer winding (aligned winding) can be performed.

In the seventh aspect, the wire is introduced into the winding device from the guide groove of the fixed head, and the depth of the guide groove overlaps with the wire (upper layer wire) already wound on the core. Since the thickness of the wire is greater than the thickness of the wire in the portion, the wire is smoothly introduced under the wire in the upper layer, and a smooth multilayer winding can be performed.

[0025]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2 show a winding apparatus (race track type winding apparatus) according to an embodiment of the present invention.

FIG. 1 is a perspective view of a winding device, and FIG. 2 is a sectional view.

As shown in the figure, a rectangular parallelepiped fixed head 2 is fixed on a base 1 of the winding device. A rotation center shaft 3 protrudes from a side surface 2A of the fixed head 2, and a hollow portion of an annular winding frame (race track winding frame) 4 is fitted to the rotation center shaft 3.

The winding frame 4 is a frame (winding core) around which the rectangular wire 5 is wound, and is rotatable around the rotation center axis 3. The winding frame 4 has an elliptical shape, and includes semicircular ends 4A and 4B and long sides 4C and 4D therebetween (see FIG. 11). The position of the rotation center axis 3 with respect to the winding frame 4 (the position of the rotation center, that is, the position of the center of the winding) can be changed in the longitudinal direction of the winding frame 4 (long side portions 4C and 4D directions). The center of the semicircle constituting 4A and the center of the semicircle constituting the end 4B can be taken.

As shown in FIG. 3, a guide groove 6 is formed on the side surface 2A of the fixed head 2. Guide groove 6
Is a rectangular wire 5 from a wire source (not shown).
From the starting end 6A on the wire rod guide 7 side to the end 6B near the center of the side surface 2A.
, Which extends in a substantially horizontal direction and is cut out,
Is located just above by the thickness of the winding frame 4. Thereby, the flat wire 5 guided to the guide groove 6 comes into contact with the winding frame 4. Also, the depth of the guide groove 6 is
At the start end 6A, the depth is greater than the thickness of the flat wire 5 and gradually decreases toward the end 6B.

On the side of the fixed head 2, a rotary head 10 is provided with a mating surface 10 A, which is a side surface 2 A of the fixed head 2.
It is arranged in a state where it faces. The rotary head 10 has a winding frame fitting hole 11 having substantially the same shape as the outer diameter of the winding frame 4. The winding frame fitting hole 11 penetrates the rotary head 10 from the mating surface 10A side to the opposite side surface 10B side.

The reel 4 fitted to the rotation center shaft 6 is fitted into the reel fitting hole 11 so as to be slidable in the axial direction. Thus, the winding frame 4 rotates around the rotation center axis 3 with the rotation of the rotary head 10.

A guide groove 12 is formed on the mating surface 10A of the rotary head 10 along the long side of the winding frame fitting hole 11. The guide groove 12 extends from the start end 12A near the center of the mating surface 10A to the end 12B at the end of the mating surface 10A, and the depth gradually increases toward the end 12B. In 12B, the thickness is deeper than the thickness of the flat wire 5. This guide groove 12
, The tip of the flat wire 5 is fitted and fixed.

In the winding start state as shown in FIGS. 1 and 2, the guide groove 6 of the fixed head 2 and the guide groove 12 of the rotary head 10 are connected side by side on the same straight line in the horizontal direction. That is, the end 6B of the guide groove 6 and the guide groove 1
The two start ends 12A overlap each other in an overlapping state. Thereby, the flat wire 5 from the wire guide 7 is guided horizontally from the guide groove 6 to the guide groove 12. In this case, as described above, the guide groove 6 gradually becomes shallower from the start end 6A to the end 6B.
2 is gradually deeper from the start end 12A toward the end 12B, so that the flat wire 5 gradually moves from the fixed head 2 side to the rotary head 10 side.

When the rotary head 10 rotates for winding from the winding start state, the leading end of the flat wire 5 is pulled by this rotation, and the guide groove 6 and the guide groove 12 are rotated.
The flat wire 5 at the portion between the two is wound around the outer periphery of the bobbin 4.

The rotating head 10 and the bobbin 4 are moved relative to a driving motor 15 installed on the base 1 by a rotating body 16, a fixed bar 19, a guide rail sliding body 20, and a guide rail 2.
1 and is rotationally driven by a drive motor 15.

More specifically, the rotating shaft 15A of the drive motor 15 is coaxially coupled to the base end 16A of the cylindrical rotating body 16. The tip 16B of the rotating body 16 is
The reel 4 is in contact with the reel 4 and is fixed so as not to move in the axial direction of the reel 4. Also, a shaft hole 16C formed in the tip portion 16B is formed.
, The tip of the rotation center shaft 3 is engaged.

At substantially the center of the rotating body 16, the flange 1
6D is provided. From the surface of the flange portion 16D on the rotating head 10 side, a pair of cylindrical fixed bar accommodation portions 17 are provided.
Extend substantially parallel to the axis of the rotating body 16. A spring 18 and a fixed bar 19 are housed in these fixed bar housings 17, respectively. As a result, the fixed bar 19 extending from the fixed bar housing 17 toward the rotary head 10 is urged toward the rotary head 10 by the spring 18.

The distal end of the fixed bar 19 is a guide rail slide 20. In addition, a pair of guide rails 21 extending in parallel on both sides of the bobbin fitting hole 11 are laid on the side surface 2B of the rotary head 10 on the side of the drive motor 15, and the pair of guide rail slides 20 are respectively provided. It slidably engages with the corresponding guide rail 21. Thereby, the rotary head 10 is fixed in the rotation direction with respect to the rotary body 16 but is slidable in a direction along the rail 21 (a direction orthogonal to the rotation center axis 3).

A ball plunger 22 for fixing the rotary head is fixed to the guide rail slide 20. As shown in FIG. 4, these ball plungers 22
The ball 22B urged by the spring 22A of
By engaging with the fixing hole 23 formed on the side surface 2B of the rotating head 10, the movement of the rotating head 10 in the direction of the rail 21 is restricted. The fixing hole 23 is
Are formed on both sides of the rail 21 that needs to be fixed. As described above, the operation of the rotary head 10 in the direction of the rail 21 is normally restricted by the ball plunger 22,
The rotating head 10 does not move in the direction of the rail 21.

With this configuration, when the drive motor 15 is driven to rotate, the rotary head 10 rotates around the rotation center axis 3.

When the rotary head 10 is moved in the direction of the rail 21, the rotary head moving cylinder 25 is used. The rotary head moving cylinder 25 is provided on the side of the rotary head 10, and pushes the rotary head 10 with the tip of an extendable rod 25 A to move the rotary head 10 to the rail 21.
Can be moved in the direction along. Thereby, the position of the rotation center shaft 3 with respect to the winding frame 4 can be changed.

Next, the operation will be described.

At the beginning of the winding of the wire, the rotary head 10 is arranged with its mating surface 10A in contact with the side surface 2A of the fixed head 2 as shown in FIG.
In this case, the guide groove 6 on the side surface 2A and the guide groove 12 on the mating surface 10A are in a state of being directly connected immediately above the winding frame 4. In this state, the distal end of the flat wire 5 from the wire guide 7 is inserted from the start end 6A of the guide groove 6. Thereby, the front end of the flat wire 5 reaches the terminal end 12B of the guide groove 12, and is fixed here.

In the initial winding state, the rotation center shaft 3
Is on one end 4A side of the winding frame 4. In other words, the rotation center shaft 3 is located substantially at the center of the semicircle that forms the end 4A of the winding frame 4.

In this state, as shown in FIG. 6, the drive of the drive motor 15 causes the rotary head 10 to turn the side surface 10C on the tip side of the flat wire 5 downward (in the clockwise direction indicated by the arrow in the figure). ), Rotate. Thereby, the bobbin 4 rotates around the rotation center axis 3, and the flat wire 5 is wound around the end 4 </ b> A of the bobbin 4 as shown in FIG. 7.

In this case, the winding frame 4 rotates around the center of the semicircle of the wound end 4A. Therefore, at this end portion 4A, it can be said that the winding is in a state similar to the state where the flat wire 5 is wound around a perfect circular winding frame. Since the light is incident, stable and smooth winding can be performed.

FIG. 8 shows a state in which the rotary head 10 is rotated 180 degrees from the start of winding. When the rotary head 10 rotates so far, the flat wire 5 is wound around the end 4A of the bobbin 4, as shown in FIG. Here, by moving the rotary head 10 in the horizontal direction, the reel 4
Change the position of the rotation center (center of the winding).

More specifically, as shown in FIG.
By extending the rod 25A of the rotary head moving cylinder 25, the end of the rod 25A pushes the side surface 10C of the rotary head 10 to slide the rotary head 10 along the rail 21 in the horizontal direction. As a result, as shown in FIG. 11, the bobbin 4 moves horizontally, and the center of rotation of the bobbin 4 moves from the end 4A to the end 4B. With the movement of the winding frame 4, the flat wire 5 is drawn out along the long side 4C of the winding frame 4 and wound around the long side 4C.

In this state, when the rotary head 10 is further rotated, as shown in FIG. 12, the winding frame 4 rotates about the rotation center shaft 3 on the end 4B side. As a result, the flat wire 5 enters the winding core 4 at a constant angle of incidence in the same manner as the winding on the end 4B in the same manner as the winding on the perfect circular winding frame, and the winding is stable and smooth. You can make lines.

When the first-layer winding is completed in this way, the second and subsequent layers are successively executed in the same procedure. In this case, since the lower layer winding is formed closer to the fixed head 2 than the upper layer winding, the upper layer winding is pushed out along the winding frame 4 to the opposite side to the fixed head 2. Thereby, as shown in FIG. 13, the rotating head 10 moves in the direction of the rotating shaft against the spring 18, and a gap corresponding to the number of winding layers is secured between the rotating head 10 and the fixed head 2. Will be. Further, in this case, since the rotary head 10 is constantly urged toward the fixed head 2 by the spring 18, there is no gap between the layers of the coil, and the coil can be wound tightly.

The guide groove 6 of the fixed head 2 is formed at least at the point (cross portion) where the lower rectangular wire 5 sunk below the upper rectangular wire 5 in such a multilayer winding (cross portion). It is deeper than the thickness. Therefore, the lower rectangular wire 5 can smoothly slide under the upper rectangular wire 5.

As described above, according to the present embodiment, the center of rotation of the winding frame 4 (the center of the winding) depends on the winding process.
Since the angle of incidence of the flat wire 5 on the winding frame 4 is changed to be stable, the winding can be performed stably, and the flat wire 5 can be effectively prevented from falling or bulging.

In the above embodiment, the present invention is applied to a winding device of a type (spindle type) in which the winding frame 4 rotates and the flat wire 5 is wound therearound. It is not limited to such an embodiment. For example,
In the flyer-type winding device, the center of the flyer rotation with respect to the winding frame (that is, the center of the winding) may be changed according to the winding process. That is, even in a winding device in which the bobbin rotates (that is, a winding device in which the center of the winding is the center of rotation (rotation) of the bobbin), or the wire feeding portion rotates around the bobbin. Winding device (that is, the center of the winding
Winding device with the center of revolution of the wire rod feeding means)
If the center of the winding changes according to the winding process,
This is the scope of the present invention.

In the above embodiment, the winding frame 4 is oval, and the rotary head 10 is moved on a straight line along the guide rail 21 so that the rotation center of the winding frame 4 is moved to the end 4A side and 4B. However, the present invention is not limited to such a configuration. That is, for example, the shape of the winding frame 4 is arbitrary, the rotary head 10 may be movable in any two-dimensional direction orthogonal to the rotation center axis 3, and the number of rotation centers of the winding frame 4 is also an arbitrary number. be able to.

Further, since the present invention is particularly effective in the winding of an edgewise coil, the above embodiment relates to a winding device of an edgewise coil. It is not limited to.
In other words, the present invention is not limited to a winding device that winds a rectangular wire, and can be applied to, for example, a winding device that winds a regular round wire, or a flat-wise coil that winds a rectangular wire. The present invention is also applicable to a winding device for forming

[Brief description of the drawings]

FIG. 1 is a perspective view of a winding device showing an embodiment of the present invention.

FIG. 2 is a sectional view of the same winding device.

FIG. 3 is a perspective view of a fixed head and a rotary head.

FIG. 4 is a sectional view of a guide rail slide and a ball plunger.

FIG. 5 is a perspective view of a winding frame and a flat wire in one step of the winding.

FIG. 6 is a perspective view of the winding device in one step of the winding.

FIG. 7 is a perspective view of a winding frame and a flat wire in one step of the winding.

FIG. 8 is a perspective view of the winding device in one step of the winding.

FIG. 9 is a perspective view of the winding frame and the flat wire in one step of the winding.

FIG. 10 is a perspective view of the winding device in one step of the winding.

FIG. 11 is a perspective view of a winding frame and a flat wire in one step of the winding.

FIG. 12 is a perspective view of a winding frame and a flat wire in one step of the winding.

FIG. 13 is a cross-sectional view of a winding device when a multilayer winding is performed.

FIG. 14 is an explanatory diagram showing a conventional winding.

FIG. 15 is a perspective view showing a flatwise coil.

FIG. 16 is a perspective view showing an edgewise coil.

[Explanation of symbols]

 Reference Signs List 2 fixed head 3 rotation center axis 4 winding frame 5 rectangular wire 6 guide groove 10 rotating head 11 winding frame fitting hole 12 guide groove 15 drive motor 16 rotating body 17 fixed bar receiving part 18 spring 19 fixed bar 20 guide rail sliding body 21 Guide rail 22 Ball plunger

Claims (13)

[Claims] 1. A winding device for winding a wire around a winding frame, wherein a position of a center of the winding can be changed with respect to the winding frame in accordance with a winding process. 2. The winding device according to claim 1, wherein the center of the winding is changed so that an incident angle of the wire with respect to the winding frame is substantially constant. 3. The winding frame has an oval shape, and the center of the winding is alternately changed to the vicinity of both ends in the longitudinal direction of the oval every half turn around the winding frame. The winding device according to claim 1. 4. The winding device according to claim 1, wherein a center of the winding is a rotation center of the winding frame. 5. A fixed head having a rotation center axis fixed thereto, a rotation head holding the bobbin so as to rotate integrally around the rotation center axis, and rotating the rotation head about the rotation center axis. 5. The winding according to claim 4, further comprising: a rotation driving unit configured to drive; and a rotation head slide unit configured to slide the rotation head with respect to the rotation center axis in a direction orthogonal to the rotation center axis. 6. apparatus. 6. A fixed head, wherein a winding is formed in a gap between the rotating head and the fixed head, the rotating head is movable in a direction away from the fixed head, and the rotating head is fixed to the fixed head. The winding device according to claim 5, further comprising a biasing unit that biases the side. 7. A guide groove for introducing a wire into the fixed head is formed, and the depth of the guide groove is determined by the thickness of the wire at a portion where the wire already wound on the core overlaps the guide groove. Claim 6 characterized by the above.
4. The winding device according to claim 1. 8. The winding according to claim 1, wherein the center of the winding is the center of the revolution of the wire rod feeding means revolving around the winding frame. Line equipment. 9. The winding device according to claim 1, wherein the wire is a flat wire. 10. The winding device according to claim 9, wherein the flat wire is wound with its wide surface directed in the axial direction of the bobbin. 11. A winding method for winding a wire on a winding frame, wherein a center position of the winding is changed with respect to the winding frame in accordance with a winding process. 12. The winding method according to claim 11, wherein the center of the winding is changed so that an incident angle of the wire with respect to the winding frame is substantially constant. 13. The method according to claim 11, wherein the center of the winding is alternately changed to the vicinity of both ends in the longitudinal direction of the ellipse every half-turn around the elliptical winding frame. Winding method.