JP4509993B2 - Multipole armature winding method and winding apparatus - Google Patents

Description

  The present invention relates to an improvement of a winding method and a winding apparatus for winding a wire around a multipolar armature such as a stator and a rotor.

  In general, it is known that the winding space factor (density) can be increased by winding a plurality of wires instead of a single wire.

  The winding device disclosed in Patent Document 1 includes a nozzle having a plurality of guide holes through which a wire is inserted, and a plurality of the nozzles that are fed out from the guide holes by moving the nozzles around the teeth (cores). A bundle of wires is wound around each tooth of the stator.

In the winding apparatus disclosed in Patent Document 2, the nozzle itself is rotated in synchronization with the movement of the nozzle around the core (core) so that the wire does not twist.
JP 2003-204659 A Japanese Patent No. 2701441

  However, in the winding apparatus disclosed in Patent Document 1, when the wire is wound around each tooth by moving the nozzle around each tooth, the wire is twisted once. For this reason, if the twisted portion of the wire is generated in the slot between the teeth, the space factor of the wire is remarkably lowered, and the performance of the motor is lowered.

In addition, an attempt has been made to generate the twisted portion of the wire rod at the coil end portion, and to prevent the twisted portion of the wire rod from being generated in the slot. The winding device disclosed in Patent Document 2 has a problem in that the winding disturbance of the winding occurs and the winding also affects the winding in the slot, and the space factor of the winding cannot be increased. When rotated, the wire rod is not twisted between the nozzle and the winding core, but the wire rod is twisted between the nozzle and the wire rod supply source.

  In order to eliminate this twisting of the wire rod, it is necessary to rotate the wire rod supply source in synchronization with the rotation of the nozzle, but the mechanism for rotating the wire rod supply source including this tension device etc. is very large. Therefore, there was a problem that it was not suitable for practical use.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to put to practical use a winding method and a winding device for a multipole armature that eliminates twisting of a wire.

  The first invention is applied to a winding method for a multipole armature in which a plurality of wires are bundled and wound around a core in which a plurality of winding cores are arranged in an annular shape.

Then, an index mechanism that rotates the annular core around its central axis, a nozzle that feeds a plurality of wires, and a nozzle movement mechanism that moves the nozzle, the index mechanism and the nozzle movement mechanism wind the nozzle around the core. The wire is wound around the winding core and the index mechanism moves the nozzle around the central axis so that the nozzle moving mechanism follows the part around which the wire is wound. And the core is turned so as to return the twist generated in the wire .

  The second invention is applied to a winding device for a multi-pole armature in which a plurality of wire rods are wound around a core in which a plurality of winding cores are arranged in an annular shape.

Then, an index mechanism that rotates the annular core around its central axis, a nozzle that feeds a plurality of wires, and a nozzle movement mechanism that moves the nozzle, the index mechanism and the nozzle movement mechanism wind the nozzle around the core. The wire is wound around the winding core and the index mechanism moves the nozzle around the central axis so that the nozzle moving mechanism follows the part around which the wire is wound. The core is turned so as to return the twist generated in the wire .

According to the first and second inventions, when the wire is wound around each core by moving the nozzle around each core, the core is rotated around its central axis in response to the twisting of each wire. In the process, the nozzle is moved so as to follow the portion around which the wire is wound, and the twist generated in the wire is restored , so that each wire is wound around the core without being twisted, and the space factor of the winding In addition, the motor performance can be improved. Further, it is not necessary to turn the wire supply source, and the size of the apparatus can be avoided.

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

  In FIG. 1, reference numeral 8 denotes a core constituting a stator (multi-pole armature) of an inner rotor type motor. The core 8 has a plurality of teeth (winding cores) 9 arranged in an annular shape. Each tooth 9 protrudes along the inside of an annular yoke, and a slot 10 is opened between the teeth 9 inward. Yes.

  In FIG. 1, reference numeral 1 denotes an inner type winding device that automatically winds a wire 5 around each tooth 9 of a core 8. Hereinafter, the configuration of the winding device 1 will be described.

  Here, it is assumed that three axes X, Y, and Z that are orthogonal to each other are set, the X axis extends in a substantially horizontal front-rear direction, the Y axis extends in a substantially horizontal lateral direction, and the Z axis extends in a substantially vertical direction.

  The winding device 1 includes an index mechanism 11 that rotates the core 8 about its central axis, a core turning mechanism 30 that turns the index mechanism 11 with respect to the gantry 2, a nozzle 3 that feeds the wire 5, and the nozzle 3. A nozzle moving mechanism 15 for moving the wire 3 in a three-dimensional direction, and the index mechanism 11 and the nozzle moving mechanism 15 move the nozzle 3 around each tooth 9 to wind the wire 5 around each tooth 9, and the core turning mechanism 30 is controlled so as to turn the core 8 together with the index mechanism 11 about the portion around which the wire 5 is wound, so as to return the twist generated in the wire 5 wound around the tooth 9.

  As shown in FIG. 2, the index mechanism 11 includes a core support base 13 that is rotatably supported around the Z axis with respect to the index base 12, and a servo motor 14 that rotationally drives the core support base 13. . The core 8 is supported at a predetermined position with respect to the core support 13.

  In FIG. 2, C is the center line of the core 8. The core support 13 is supported so as to rotate coaxially with the center line C of the core 8.

  The core turning mechanism 30 includes a servo motor 31 that supports the index base 12 so as to be rotatable about the Z axis with respect to the gantry 2 and that drives the index base 12 to rotate.

  In FIG. 2, T is a center line extending in the Z-axis direction through the central portion of the slot 10 through which the wire 5 extending from the nozzle 3 where winding is performed passes. The index table 12 is supported so as to turn around the center line T.

  A center line C in which the index mechanism 11 rotates the core 8 and a center line T in which the core turning mechanism 30 turns the index mechanism 11 are offset by a predetermined distance L corresponding to the core 8.

  As shown also in FIG. 3, the core turning mechanism 30 may include an electromagnetic actuator 32 that supports the index table 12 so as to be slidable via a bearing 38 and moves the index table 12.

  In this case, by moving the index base 12, the offset amount L between the index mechanism 11 and the core turning mechanism 30 can be arbitrarily changed according to the size of the core 8, and can correspond to the cores 8 having different sizes. .

  The nozzle moving mechanism 15 includes a back-and-forth moving table 17 that moves in the X-axis direction by the electromagnetic actuator 16 with respect to the gantry 2, and a lifting table 19 that moves in the Z-axis direction by the electromagnetic actuator 18 with respect to the front-and-back moving table 17 A base base 21 that moves in the Y-axis direction by an electromagnetic actuator 20 with respect to the lift base 19 and a tilt base 23 that rotates about the Y-axis by an electromagnetic actuator 22 with respect to the base base 21 are provided. The nozzle 3 is fixedly provided.

  The tilting table 23 is supported so as to be rotatable about the Y axis via the shaft 24 with respect to the base table 21. The electromagnetic actuator 22 includes a follower 25 that is screwed into a ball screw and translates in the Z-axis direction, and the follower 25 and one end of the tilting base 23 are rotatably connected via a link 26. When the follower 25 moves up and down with respect to the base table 21, the tilting table 23 rotates through the link 26.

  By rotating the tilting table 23 using the link mechanism in this way, the tilting table 23 can be made compact, and the tilting table 23 can be inserted into a limited space in the core 8.

  Note that the structure for driving the tilting table 23 is not limited to this link mechanism, and for example, a mechanism constituted by a gear or the like may be used.

  A plurality of wire rods 5 are supplied to the nozzle 3 from a wire rod supply device (not shown), and the nozzle 3 moves around the teeth 9 while feeding out the plurality of wire rods 5, whereby the plurality of wire rods 5 are bundled. It is wound around the teeth 9. In this way, by winding a plurality of wires 5 instead of a single wire, the space factor (density) of the windings is increased and the performance of the motor can be improved.

  The nozzle 3 is formed in a plate shape through which the slot 10 between the teeth 9 is inserted, and a plurality of guide holes 3a through which each wire 5 is inserted are formed. The guide holes 3a are opened in a row at a predetermined interval in the Z-axis direction.

  The follower 25 is provided with a roller 27, and the tilting base 23 is provided with a plurality of pulleys 28, and each wire 5 is guided to each guide hole 3 a of the nozzle 3 through the roller 27 and each pulley 28. Each wire 5 supplied from the wire supply device is given a predetermined tension via a tensioner device (not shown).

  Each of the electromagnetic actuators 16, 18, 20, and 22 includes a ball screw that is rotationally driven by a servo motor, and a follower that is screwed into the ball screw to move in parallel.

  The winding device 1 includes a servo motor for each electromagnetic actuator 16, 18, 20, 22, 32 and a controller 6 for controlling the operation of the servo motors 14, 31.

  The controller 6 controls the operation of the electromagnetic actuators 16, 18, 20, 22 and the servo motors 14, 31 and moves the nozzle 3 around the teeth 9 through the slot 10 via the nozzle moving mechanism 15 and the index mechanism 11. The wire 5 fed out from the nozzle 3 is controlled to be wound around the teeth 9.

  The controller 6 controls the operation of the electromagnetic actuator 22 and rotates the tilting table 23 so that the tip of the nozzle 3 faces upward when the nozzle 3 descends through the slot 10 while feeding each wire 5. When the nozzle 3 rises, the tilting table 23 is rotated so that the tip of the nozzle 3 faces downward.

  That is, the controller 6 controls the operation of the electromagnetic actuator 22 to rotate the nozzle 3 in a direction in which the wire rods 5 fed out from the respective guide holes 3a are separated from each other.

  The controller 6 turns the index mechanism 11 together with the core 8 through the core turning mechanism 30 every time the wire 5 drawn out from the nozzle 3 is wound around the tooth 9 once, and twists generated in the wires 5 are twisted. Control to return.

  Next, an operation in which the winding device 1 winds the wire 5 around the core 8 will be described.

  First, the core 8 is placed on the core support base 13, the concave and convex portions provided on the core 8 and the core support base 13 are aligned with each other, and the core 8 is set at a predetermined position.

  -Hold the front-end | tip part of the wire drawn | fed out from the nozzle 3 with the clamp which is not shown in figure.

  -The nozzle moving mechanism 15 and the index mechanism 11 are operated. Thereby, the nozzle 3 moves around the tooth 9 through the slot 10, and each wire 5 fed from the nozzle 3 is wound around the tooth 9.

  This winding operation will be described in detail. As shown in FIG. 4A, the core 8 is rotated via the index mechanism 11 so that the slot 10 comes directly below the nozzle 3.

  Subsequently, as shown in FIG. 4B, the nozzle 3 is lowered through the slot 10 via the nozzle moving mechanism 15. In this way, when the nozzle 3 descends through the slot 10 while feeding each wire 5, the tilting table 23 is rotated so that the tip of the nozzle 3 faces upward. Thereby, the friction between each wire 5 drawn | fed out from the nozzle 3 can be reduced, and it can prevent effectively that the wires 5 are intertwined.

  Subsequently, as shown in FIG. 4C, the core 8 is rotated via the index mechanism 11 so that the slot 10 comes directly above the nozzle 3.

  Subsequently, as shown in FIG. 4D, the nozzle 3 is raised through the slot 10 via the nozzle moving mechanism 15. In this way, when the nozzle 3 moves up through the slot 10 while feeding each wire 5, the tilting table 23 is rotated so that the tip of the nozzle 3 faces downward. Thereby, the friction between each wire 5 drawn | fed out from the nozzle 3 can be reduced, and it can prevent effectively that the wires 5 are intertwined.

  Subsequently, as shown in FIG. 4E, the index mechanism 11 is turned once together with the core 8 via the core turning mechanism 30 to return the twist generated in each wire 5.

  When the nozzle 3 makes a round around the teeth 9 in the process shown in FIGS. 4A, 4B, 4C, and 4D, each wire 5 fed from the nozzle 3 is wound around the teeth 9 once. However, this causes a twist in which the wire rods 5 fed from the nozzle 3 intersect each other. As a countermeasure against this, as shown in FIG. 4E, the twist generated in each wire 5 is returned by turning the index mechanism 11 once together with the core 8 via the core turning mechanism 30. By repeating the operations of (a), (b), (c), (d), and (e) in FIG. 4 in order, each wire 5 is wound around the teeth 9 without being twisted.

  The controller 6 moves the nozzle 3 in the X-axis direction (the radial direction of the core 8) in the process of turning the index mechanism 11 together with the core 8 via the core turning mechanism 30, and the wire 5 extending from the nozzle 3 is moved to the teeth 9. Control is performed to suppress movement. As means for moving the nozzle 3 in the X-axis direction, the electromagnetic actuator 16 or the electromagnetic actuator 32 is used.

  In this way, when each wire 5 is wound around one tooth 9 a predetermined number of times, the core 8 is rotated by a predetermined angle via the index mechanism 11, and the above operation is repeated to obtain another tooth 9. The wire 5 is wound around.

  In addition, the winding direction with respect to each tooth 9 varies depending on the specifications of the stator, and there are a method in which all the teeth 9 are wound in the same direction, a method in which the winding direction is alternately changed with respect to each tooth 9, and the like.

  When the winding of all the teeth 9 is completed, each wire 5 fed from the nozzle 3 is held by a clamp (not shown), each wire is cut before the clamp, and the core 8 is removed from the core support 13.

  As described above, the winding device 1 of the stator that winds the plurality of wires 5 in a bundle around each tooth 9 protruding from the annular core 8 includes the index mechanism 11 and the nozzle moving mechanism 15 that have the nozzle 3. The wire 5 is wound around each tooth 9 by moving around each tooth 9, and the core turning mechanism 30 turns the core 8 together with the index mechanism 11 to return the twist generated in the wire 5 wound around the tooth 9. Since the configuration is adopted, each wire 5 is wound around the teeth 9 without being twisted, so that the space factor of the winding is increased and the performance of the motor is improved. Further, it is not necessary to turn the wire supply source, and the size of the apparatus can be avoided.

  When the core turning mechanism 30 turns the core 8 in a state where the wire 5 extending from the nozzle 3 is wound around the tooth 9, the winding portion of the wire 5 also turns around the center line T (the center of the slot 10). However, by moving the nozzle 3 in the X-axis direction in accordance with this, the wire 5 extending from the nozzle 3 is restrained from moving with respect to the tooth 9, and the wire 5 is wound around the tooth 9 at a predetermined position. Can turn.

  Further, the winding device 1 rotates the tilting table 23 so that the tip of the nozzle 3 faces upward when the nozzle 3 descends through the slot 10 while feeding the wire 5, while the nozzle 3 rises. Since the tilting base 23 is sometimes rotated so that the tip of the nozzle 3 faces downward, the friction between the wire rods 5 fed out from the nozzle 3 can be reduced, and the wire rods 5 can be effectively prevented from being entangled with each other. The space factor of the line can be increased.

  However, in the above-described embodiment, the winding device 1 is configured such that the nozzle 3 moves up and down during this winding operation even if the core turning mechanism 30 winds each wire 5 around the teeth 9 while returning the twist generated in each wire 5. If slack occurs in each wire 5 fed out in a bundle from the nozzle 3 in the process of turning back in the direction, it becomes easy to generate a portion where the wires 5 wound around the teeth 9 cross each other, and the space factor of the winding Could be lower.

  As a countermeasure, the winding apparatus 1 shown in FIG. 5 includes upper and lower guide pins 41 arranged along both ends of the teeth 9 and two guide pin moving mechanisms 45 that move each guide pin 41 in a three-dimensional direction. And after each wire rod 5 drawn out from the nozzle 3 is once hung around the guide pin 41, the guide pin 41 is pulled out and each wire rod 5 is dropped onto the teeth 9.

  The guide pin moving mechanism 45 includes a lifting platform 47 that moves in the Z-axis direction with respect to the gantry 2 by an electromagnetic actuator 46, a front-rear moving platform 49 that moves relative to the lifting platform 47 in the X-axis direction with an electromagnetic actuator 48, A base base 51 that moves in the Y-axis direction by an electromagnetic actuator 50 with respect to the back-and-forth moving base 49 is provided, and a guide pin 41 is provided on the base base 51.

  The guide pin 41 is moved up and down by an actuator 52.

  When the winding device 1 winds the wire 5 around the core 8, the upper and lower guide pins 41 are arranged to move side by side so as to sandwich the common teeth 9 by the guide pin moving mechanisms 45.

  The winding operation of the winding apparatus 1 is basically performed in the same manner as in the above embodiment, but in the process in which the nozzle 3 turns from ascending to descending and turns back, each wire 5 is temporarily transferred to the guide pins 41. After the wrapping, the guide pins 41 are pulled out and the respective wires 5 are dropped on the teeth 9 so that the slack does not occur in each wire 5.

  The winding operation will be described in detail. As shown in FIG. 6A, the nozzle 3 rises out of the slot 10 and further rotates the core 8 via the index mechanism 11, so that the adjacent slot 10 The guide pin 41 is inserted along the upper end of the tooth 9 when it has moved to the center of the tooth 9.

  Subsequently, as shown in FIG. 6 (b), the guide pins 41 are raised, the wires 5 wound around the guide pins 41 are aligned in a line, the coil end portions are lowered, and the wires 5 So that no slack occurs.

  Subsequently, as shown in FIG. 6C, the nozzle 3 is lowered into the slot 10, and the guide pin 41 is lowered so that each wire 5 wound around the guide pin 41 is not loosened. Like that. The controller 6 synchronizes the movement of the nozzle 3 and the movement of the guide pin 41 to control each wire 5 so that no slack occurs.

  Subsequently, as shown in FIG. 6D, the nozzle 3 is lowered through the slot 10, and the guide pin 41 is moved in the axial direction to be extracted, and each wire 5 that has been wound around the guide pin 41. Is dropped to Teeth 9. In this case, the wire 5 is twisted in the slot 10, but the twist is returned by rotating the core 8, the wire 5 is aligned in the slot 10, and the space factor is increased.

  Even in the process in which the nozzle 3 turns from descending to ascending, similarly to the above-described operation, the wire 3 is drawn out from the nozzle 3 and once wound around the guide pin 41, and then the guide pin 41 is pulled out and each wire 5 is connected to the teeth 9. So that no slack occurs in each wire 5.

  In this way, the nozzle 3 is folded back so as not to cause slack in each wire 5 via the guide pin 41, so that the portions where the wires 5 wound around the teeth 9 intersect with each other at the coil end portion. Occurrence is suppressed. As a result, it is possible to effectively prevent the wires 5 from being entangled with each other, coupled with the wire 5 being wound around the teeth 9 without being twisted via the core turning mechanism 30, and to suppress the axial length of the stator. This increases the space factor of the winding.

  A spring 29 that urges the guide pin 41 in a direction in which tension is applied to each wire 5 may be added so that the slack does not occur in each wire 5.

  Further, the winding device 1 has a configuration in which the nozzle moving mechanism 15 moves the nozzle 3 around the teeth 9 and winds the wire 5 fed from the nozzle 3 around the teeth 9 without operating the index mechanism 11. It is also possible.

As still another embodiment, the winding device 1 may be configured to operate the index mechanism 11 and the nozzle moving mechanism 15 in synchronization with each other.

  In this case, the controller 6 moves the nozzle 5 in the X-axis direction and the Y-axis direction so that the wire 5 is wound while the index mechanism 11 rotates the core 8 about its central axis. Control to follow the site.

Thereby, the winding apparatus 1 can return the twist produced in the wire 5 wound around the teeth 9 without using the core turning mechanism 30. In the winding device 1, the core turning mechanism 30 can be eliminated, and the structure can be simplified.

  The inner type winding device that winds around the core that constitutes the stator of the inner rotor type motor has been described above. However, the present invention is not limited to this, and the outer type that winds the present invention around the core that constitutes the stator of the outer rotor type motor. The present invention can also be applied to other winding devices.

  The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.

  The present invention can be applied to a winding method and a winding device for a stator, a rotor, or other multipolar armature that winds a plurality of wires in a bundle.

The perspective view of the winding apparatus which shows embodiment of this invention. The block diagram of a core turning mechanism etc. similarly. The block diagram of a core turning mechanism etc. similarly. Explanatory drawing which similarly shows winding operation | movement. The perspective view of the coil | winding apparatus which shows other embodiment. Explanatory drawing which similarly shows winding operation | movement.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Winding device 2 Base 5 Wire material 8 Core 9 Teeth (winding core)
11 Index mechanism 15 Nozzle moving mechanism 23 Tilt base 30 Core turning mechanism 41 Guide pin 45 Guide pin moving mechanism

Claims (2)

In a winding method of a multi-pole armature in which a plurality of wire rods are wound in a bundle on a core in which a plurality of winding cores are arranged in a ring,
An index mechanism for rotating the annular core around its central axis;
A nozzle for feeding out a plurality of wires,
With a nozzle moving mechanism that moves this nozzle,
While winding the wire around the core by moving the nozzle around the core,
In the process in which the index mechanism rotates the core around its central axis, the nozzle moving mechanism moves the nozzle so as to follow the portion around which the wire is wound, and turns the core so as to return the twist generated in the wire. A method of winding a multipole armature, characterized by comprising: In a multi-pole armature winding device that winds a plurality of wire rods in a bundle with respect to a core in which a plurality of winding cores are arranged in a ring shape,
An index mechanism for rotating the annular core around its central axis;
A nozzle for feeding out a plurality of wires,
A nozzle moving mechanism for moving the nozzle,
While winding the wire around the core by moving the nozzle around the core,
In the process in which the index mechanism rotates the core around its central axis, the nozzle moving mechanism moves the nozzle so as to follow the portion around which the wire is wound, and turns the core so as to return the twist generated in the wire. A winding device for a multipole armature, characterized in that the configuration is made to be.