JP6476465B2 - Winding device - Google Patents

Description

  The present invention relates to a coil winding apparatus.

  2. Description of the Related Art In recent years, in order to reduce the size and increase the performance of a rotating machine, the coil has a rectangular cross section and is wound into a non-circular shape close to a rectangle.

  FIG. 13 shows a configuration of Patent Document 1 and shows a manufacturing method in which a rectangular wire is converted into a rectangular coil. The wire 102 is fed and the entire winding 103 is rotated, and the wire 102 is clamped 104 and a bending jig 105. To form a bent portion by edgewise bending, thereby forming a non-circular edgewise winding including the bent portion, the short side 101a, and the long side 101b. The side surface of the long side 101b of the winding 103 is supported by a side support such as the long side support 106, the short side support 107, etc., and the winding is generated by the inertial force generated with the high-speed edgewise bending of the wire. It is intended to suppress the deformation of the mold.

JP 2009-158714 A

  In the winding apparatus of Patent Document 1, the long side support 106 must be returned to a predetermined position at the time of the next bending in order to move the long side support 106 along with the winding. Further, two support tools, the long side support tool 106 and the short side support tool 107, are required, and each of them must be moved and contrasted as described above, and the apparatus becomes complicated and expensive. It was.

  The present invention solves the above-described problems, and an object thereof is to obtain an apparatus for winding a rectangular coil at a high speed with a simple configuration.

The winding device according to the present invention is configured to form a non-circular coil by bending a wire rod supply means for feeding and gripping the coil wire rod, a bending guide provided on the wire rod supply device side, and the coil wire rod contacting the bending guide. Bending means, a coil guide provided in the vicinity of the portion of the bending guide where the wire starts to be bent, and a rotating mechanism for rotationally driving the bending means, and the bending means is an outer periphery of the coil at a position after bending of the coil wire. It has a rotation center on the outer side and repeats rotation in one direction. The side of the wound non-circular coil is brought into contact with the coil guide, and the non-circular coil swing generated when the coil wire is bent is used as the coil guide. It is made to contact and brake.

More specifically, the coil guide is arranged on the circumferential tangent line of the bending guide and brought into contact with the side surface portion of the non-circular coil.
The coil guide is disposed at a position substantially parallel to the coil wire supplied by the wire supply means, and is brought into contact with the side surface of the non-circular coil.
The winding device of the present invention is disposed at a position that supports the gravity of the non-circular coil and supports the weight of the non-circular coil.

Further, the winding device of the present invention is provided with a coil support that supports the gravity of the non-circular coil laminated in the direction of gravity separately from the coil guide.
In the winding device according to the present invention, the coil guide includes a guide curve portion that abuts the bent portion of the non-circular coil, and the guide curve portion and the non-circular coil are caused to swing when the coil wire is fed. The bent portion is brought into contact with and brakes.

  In addition, the winding device of the present invention includes coil end bending means for bending the end of the coil wire material into a laminated coil lamination method, and takes out terminals to the outside with a coil configuration for braking the coil. Yes, the bent portion of the coil end is provided in the non-circular coil bent portion, and the coil is braked also in the bent portion of the coil end portion.

In the winding device of the present invention, a coil guide is provided coaxially with the bending guide to guide the inner periphery of the bent portion of the non-circular coil.
The winding device of the present invention includes a rotation mechanism having a rotation center outside a coil formed by winding a coil wire as a bending means, and manufactures a non-circular coil by continuous rotation.

According to the winding device of the present invention, the bending means for forming a non-circular coil by bending the coil wire by bringing the coil wire into contact with the bending guide provided on the wire supply means side, and the portion of the bending guide where the wire starts to be bent. The coil guide is provided in the vicinity, and the side surface of the wound non-circular coil is brought into contact with the coil guide and braked, so that the swing of the non-circular coil can be quickly removed with a simple configuration without moving parts. The coil can be wound at high speed.
Further, since the bending means is constituted by a rotating mechanism having a rotation center outside the coil formed by winding the coil wire, a non-circular coil can be manufactured at high speed by continuous rotation.

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. Explanatory drawing which shows operation | movement of the winding apparatus which concerns on Example 1 of this invention. Explanatory drawing which shows operation | movement of the winding apparatus which concerns on Example 1 of this invention. Explanatory drawing which shows operation | movement of the coil guide of the winding apparatus which concerns on Example 1 of this invention. The perspective view which shows the winding apparatus which concerns on Example 2 of this invention. The perspective view which shows the winding apparatus which concerns on Example 3 of this invention. Explanatory drawing which shows operation | movement of the coil guide of the winding apparatus which concerns on Example 3 of this invention. The perspective view which shows the winding apparatus which concerns on Example 4 of this invention. The perspective view which shows the winding apparatus which concerns on Example 5 of this invention. The perspective view which shows the winding apparatus which concerns on Example 5 of this invention. The perspective view which shows the winding apparatus which concerns on Example 6 of this invention, and the block diagram of a coil guide. The block diagram of the conventional winding apparatus.

  Embodiments of the present invention will be described below with reference to the drawings, taking each of Examples 1 to 6 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 coil guide is not shown in the figure for convenience of explanation of the bending means. 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 provided 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 lamination guide 21 is fixed to the wire guide 9b side. When the coil wire 2 is bent in a coil shape, the lamination guide 21 is guided and laminated sequentially.

  The bending means C is rotated several times to bend the coil wire 2 to form the laminated coils 14 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 operation of the coil guide 15 will be described later.

  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 2a. 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 bending roller 13 moves faster, so that the linear portion 2b of the coil wire 2 contacts the bending roller 13 as shown in FIG. There is no. 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 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. 4 (d), the coil wire 2 is bent by the bending roller 13 of the shading means C, and is guided so as to ride on the lamination guide 21 and laminated 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 the bending process, and it is not necessary to reversely rotate the bending roller 13 or move it in the coil stacking direction. I understand that. 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.

  In the present embodiment, a rectangular laminated coil that is close to a square made up of four bent portions and a straight non-bent portion connecting between the bent portions is shown. However, even when there is a dimensional difference between the long side and the short side, the wire rod It can be applied by adjusting the feed amount of the supply means B. Further, not only a quadrangular laminated coil composed of four bent portions and a linear portion communicating between them, but also other polygonal coils can be applied.

  The above steps are repeated to generate the coil 14 as shown in FIG. In order to shorten the manufacturing time, it is necessary to feed the coil at a high speed and bend at a high speed. However, when the speed is increased, the coil 14 swings due to inertia. The magnitude of this oscillation also varies depending on the height of the coil stack, the strength of the coil wire 2 and the weight of the coil 14. It takes time for the coil to occur or until the oscillation stops and stabilizes, and it takes time to manufacture the coil. In order to prevent this oscillation, the coil guide 15 is disposed in the vicinity of the bending guide 9ba. FIGS. 5A, 5B and 5C show the operation of the coil guide. FIG. 5A shows a state before the coil wire 2 is supplied and bending is performed, and FIG. 5B shows the bending roller 13 bending the coil wire 2 along the bending guide 9ba. FIG. 5C shows a state in which the previous bending process has been completed. As shown in FIG. 5A or 5B, the coil guide 15 is disposed so that the contact portion 15a contacts one side of the coil 14 before the start of bending or at the end of bending. In FIG. 5 (a), the coil wire 2 is supplied in the right direction in the figure by the wire supply means B, and one side 14a of the coil 14 moves while contacting the contact portion 15a of the coil guide 15. The swing of the coil 14 due to the movement of the wire 2 is suppressed. In FIG. 5B, the bending roller 13 is in contact with the bending roller 9ba, and the coil wire 2 is bent. Then, in FIG. 5C, the bending process is completed, and one side 14b of the coil 14 comes into contact with the contact portion 15a, thereby suppressing the rocking generated during the bending process.

    As shown in FIG. 2, the coil 14 is laminated in a direction opposite to the direction of the bending means C, and the coil 14 is installed on the coil guide 15. The contact portion 15 a of the coil guide 15 is in the same direction as the tangential direction of the bending guide 9 ba and is arranged in parallel with the coil wire 2. In the present embodiment, at the end of bending of the coil 14, one side of the coil 14 is designed to be parallel to the supplied coil wire 2. As a result, one side of the coil 14 comes into contact with the bending guide 15 when the coil wire 2 is supplied or when the bending of the rectangular coil 14 is finished, and the swing of the coil coil 14 is suppressed. According to the configuration of the present invention, the oscillation can be suppressed even if the ratio of the long side and the short side of the rectangular coil 14 is different, and the same effect can be obtained not only in the rectangular shape but also in other polygonal coils. Have.

  FIG. 6 is a perspective view showing the configuration of the second embodiment of the present invention, FIG. 6 (a) shows a state at the beginning of winding of the coil, and FIG. 6 (b) shows a state in which the coil is wound a predetermined number of times. It is. The difference from the first embodiment is that the direction of the entire winding device A is changed. As a result, the coil 14 is rotated and bent horizontally with respect to the gravity, the coils 14 are stacked in the direction of gravity, and the gravity of the coil 14 is supported by the coil support 20 installed horizontally. By arranging the coil 14 horizontally, when the coil 14 is laminated in multiple layers, the vibration of the coil 14 due to gravity is reduced, and the swinging effect is further reduced by the synergistic effect with the coil guide 15. .

  FIG. 7 is a perspective view showing the configuration of the third embodiment of the present invention. The difference from the first embodiment is that the coil guide 15 is provided with a guide curve portion 15b. The guide curve portion 15b has a corner portion dimension that is approximately the same as or larger than the shape of the bent portion 14c of the coil 14.

  FIG. 8 is a diagram for explaining the operation of the third embodiment. FIG. 8 (a) shows the state of the coil 14 after the bending is completed, and FIG. 8 (b) shows the coil wire 2 on the right side of the figure by the wire supply means B. It shows a state in which it is moved in the direction and the next bent portion of the coil 14 is sent to the position of the bending guide 9ba. At this time, the swing of the coil 14 generated when the coil wire 2 is fed at a high speed is absorbed by bringing the bent portion 14c of the coil 14 and the guide curve portion 15b of the coil guide 15 into contact with each other. In the case of rectangular coils having different side lengths, the coil guide 15 can be adjusted by a driving device (not shown) in accordance with the required amount of movement of the coil wire 2.

FIG. 9 shows a perspective view of the configuration of the fourth embodiment of the present invention. The difference from the first embodiment is that the tip of the coil 14 is bent in the axial direction in which the coils 14 are laminated in advance. FIG. 9A shows the operation of bending the tip of the coil wire 2, FIG. 9B shows the operation when the coil wire 2 starts to be wound as a coil, and FIG. 9C forms the coil 14. The operation when doing is shown. In FIG. 9A, the tip 2a of the coil wire 2 is bent in the coil stacking direction (upward in the figure) using the end bending means 16. When the wire rod is supplied by the wire rod supplying means B and the coil wire rod 2 having a predetermined length is sent, the tip is bent by a driving means (not shown) that moves the end bending means 16 in the arrow M direction. The tip 2a is bent toward the inside of the coil 14 to be wound, and the bending length is set to a length necessary for providing a terminal for electrically connecting the coil. Thereafter, the coil wire 2 is supplied, and the non-circular coil 14 is formed by the bending means C as shown in FIG. 9C as shown in FIG. 9B. The tip end portion 2a of the coil wire 2 becomes a coil end bent portion 14d, and a lead wire (not shown) can be wired. As the driving means for the end bending means 16, a linear mechanism such as a motor having a screw mechanism, an electromagnetic solenoid, or a pneumatically driven plunger is used.
By bending the coil end bent portion 14d on the coil 14 at a right angle, the coil end bent portion 14d can be partially brought into contact with the coil guide 15, and the braking effect can be enhanced during a specific bending operation.

FIG. 10 shows a perspective view of the configuration of the fifth embodiment of the present invention. The difference from the first embodiment is that an inner guide coil guide 17 is provided inside the coil 14 separately from the coil guide 15. FIG. 10A shows an operation at the beginning of winding of the coil, and FIG. 10B shows an operation when the coil 14 is formed. In FIG. 10A, a cylindrical inner guide coil guide 17 is provided in the stacking direction of the coils 14 at the tip of the wire guide 9b. Since the coil wire 2 is bent by the bending guide 9ba to form a coil, the inner guide coil guide 17 contacts the coil 14 inside the coil 14 as shown in FIG. Suppress. The cylindrical shape of the inner guide coil guide 17 is approximated to the shape of the bent portion of the coil 14, and the length is longer than the laminated length of the coil 14. In addition, the inner guide coil guide 17 has a long hole 18 parallel to the direction of the coil wire 2 in the wire guide 9b for moving the coil wire 2 by the width dimension.
FIG. 11 is obtained by removing the coil guide 15 from the configuration of FIG. 10 and can be used simply when the influence of the swing of the coil 14 is small.

  FIG. 12 is a perspective view of the configuration of the sixth embodiment of the present invention. The difference from the second embodiment is that the coil guide is formed obliquely. In the coil guide 20 shown in FIG. 12A, the contact portion 20a of the coil is linearly inclined upward. FIG. 12B is a view taken in the direction of arrow P when the coil 19 is manufactured. By making the coil 19 trapezoidal, the swing during winding becomes smaller, but in order to further reduce the swing, the contact portion 18a of the coil guide 18 is inclined so as to conform to the shape of the coil 19. It is a thing. The trapezoidal coil 19 can be manufactured by changing the supply amount of B by the wire supply means. By making the trapezoidal inclination substantially coincide with the inclination of the contact portion 18a, appropriate braking can be performed for each winding. In addition, although the contact part 18a shown in the figure is a linear inclination, you may comprise it in step shape.

The coil guide 15 is preferably made of a slippery material that has a smooth surface so as not to damage the coil 14 when contacting the coil 14, and friction is obtained using a rotating body such as a roller. It is also possible to reduce. Further, an elastic body or a soft material may be used in order to absorb the impact at the time of contact.
In the embodiment, the coil guide 15 is formed in a rectangular parallelepiped shape. However, a plate-shaped member may be bent to form an L shape.
Since the position of the contact portion 15a of the coil guide 15 is installed in parallel with the coil wire 2, there is no need to change the position even if the coil shape changes, but the position is fine to adjust the degree of braking. For the purpose of adjustment, adjustment means for changing the position of the coil guide 15 can be provided.

A Winding device B Wire supply means C Bending means 2 Coil wire 9ba Bending guide 14 Coil
15 Coil guide 15b Guide curve portion 16 End bending means 20 Coil support

Claims (8)

In a non-circular coil manufacturing apparatus having a bending portion and a non-bending portion, a wire supply means for feeding and gripping a coil wire, a bending guide provided on the wire supply means side, and the coil wire on the bending guide Bending means for bending by contact and forming a coil, a coil guide provided in the vicinity of a portion where the wire of the bending guide begins to bend, and a rotating mechanism for rotationally driving the bending means, the bending means comprising: The coil wire has a center of rotation outside the outer periphery of the coil at a position after the coil wire is bent, and repeats rotation in one direction, and a side surface of the wound non-circular coil is brought into contact with the coil guide. Winding device.   The winding device according to claim 1, wherein the coil guide is arranged on a tangent line of a circumference of the bending guide.   The winding device according to claim 1 or 2, wherein the coil guide is disposed at a position substantially parallel to the coil wire supplied by the wire supply means.   The winding device according to any one of claims 1 to 3, wherein the coil guide is disposed at a position that supports gravity of the non-circular coil.   The winding device according to any one of claims 1 to 3, wherein the non-circular coil is laminated in a direction of gravity, and a coil support that supports the gravity of the non-circular coil is provided. The winding device according to any one of claims 1 to 5 , wherein the coil guide includes a guide curve portion that guides a bent portion of the non-circular coil. Winding apparatus according to any one of 6 claim 1, characterized in that the ends of the coil wire having an end portion bent section bent laminated Direction of the laminated coil. The winding device according to claim 1, wherein the coil guide is provided inside the non-circular coil .

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