JP2021197811A - Winding device and winding method - Google Patents

Abstract

To solve the problem of strand alignment disorder in the middle of a winding operation with a relatively simple configuration for a coil that is formed by winding strands around an object to be wound.SOLUTION: A winding device (11) includes a wire skipping guide (27), which is provided so as to be movable between a wire skipping action position placed at the periphery of an object to be wound (3) set on a support (19) and an evacuated state separated from the object to be wound to guide a strand (5) fed from a nozzle (26a) of a sending unit (23) to a necessary position in an axial direction of a coil (6) in the wire skipping action position, and a first movement mechanism (30), which moves the wire skipping guide from the evacuated state to the wire skipping action position in the middle of a winding operation of the coil by a winding drive mechanism (13).SELECTED DRAWING: Figure 2

Description

The present invention relates to a winding device and a winding method for forming a coil by winding a wire around a winding object composed of a core of an armature or a bobbin mounted on the core.

For example, in the stator of a brushless motor, a coil is formed by winding a wire such as a copper wire around each tooth portion of the split core, and a plurality of the split cores are combined to form a coil. For example, Patent Document 1 discloses a winding device in which a wire, for example, a copper wire is wound around a split core of this type to form a coil. This winding device includes a clamp member that supports the split core, a wire nozzle that supplies wires, a clamp member for the wire nozzle, and a drive unit that rotationally drives the split core. Then, a guide member for guiding the wire to a predetermined position in the teeth portion of the split core is provided, and the coil winding work is performed while moving and guiding the guide member, whereby the coil is densely wound and occupied. The product ratio has been improved.

Japanese Unexamined Patent Publication No. 2011-229301

By the way, in the winding device as described above, in the middle of winding the wire 5 with respect to the teeth portion 3, as shown in FIG. 12, the wire 5 is tensioned and the wire 5 is wound. There is a circumstance that slip occurs in the axial direction, that is, in the downward direction in the figure, on the outer circumference of the already wound portion of 5. Therefore, there is a problem that the wire 5 that should be originally wound around the A portion is wound by shifting to the A'portion. As described in Patent Document 1 described above, such a problem of misalignment of strands can be prevented by a configuration in which a guide member is provided. However, in the configuration of Patent Document 1, there is a problem that the guide member and the configuration for moving the guide member are complicated, and the operation control becomes complicated.

In addition, in this kind of winding device, there is another problem that so-called line flow occurs. As shown in FIG. 13, this line flow is at the end B of the coil, and although it is originally desired to send the wire 5 from top to bottom in a form close to a right angle in the figure, two points in the figure are shown. As shown by the chain line B', it means that the strand 5 flows in an oblique direction. When this line flow occurs, the end portion of the coil is slackened and thus bulges toward the outer peripheral side, causing problems such as contact and interference with adjacent coils.

The present invention has been made in view of the above circumstances, and an object thereof is to wind a wire around a winding object to form a coil, which has a relatively simple configuration and is in the middle of a winding operation. It is an object of the present invention to provide a winding device and a winding method capable of solving the problem of misalignment of strands in the above.

In order to achieve the above object, the winding device (11) of the present invention winds a wire (5) around a winding object (3) made of an armature core or a bobbin mounted on the core. The coil (6) is formed by the support portion (19) on which the winding object is set, the delivery unit (23) that sends out the strands from the nozzle (26a), and the winding target. The nozzle is moved in the axial direction while rotating around the object to be wound relative to the object, and a winding operation of winding a plurality of rows of coils in the axial direction and a plurality of layers in the radial direction is executed. The winding drive mechanism (13) is provided so as to be movable between the line skipping action position arranged on the outer peripheral portion of the winding object and the retracted state separated from the winding object. The wire skipping guide (27) that guides the wire sent from the nozzle to the required position in the axial direction at the wire skipping action position, and the wire skipping in the middle of the coil winding operation by the winding drive mechanism. It is provided with a first moving mechanism (30) for moving the guide from the retracted state to the line skipping action position.

According to the above configuration, the winding drive mechanism moves the nozzle of the delivery unit in the axial direction while rotating the circumference of the winding object relative to the winding object set on the support portion. Performs a winding operation. As a result, a plurality of rows of coils in the axial direction and a plurality of layers in the radial direction are wound around the object to be wound. At this time, in the middle of the coil winding operation by the winding drive mechanism, the wire skipping guide is moved from the retracted state separated from the winding object by the first moving mechanism to the wire skipping action position. When this wire skipping guide is in the wire skipping action position, the wire sent from the nozzle can be guided to a required position in the axial direction of the winding object.

This makes it possible to prevent the strands from being out of alignment in the middle of the coil winding operation by the winding drive mechanism. At this time, the line skipping guide only needs to be reciprocated between the retracted state and the line skipping action position by the first moving mechanism, so that the first moving mechanism does not have to be so complicated. can. Therefore, in the case of forming a coil by winding a wire around an object to be wound, it is possible to solve the problem of misalignment of the wire in the middle of the winding operation with a relatively simple configuration. An excellent effect can be obtained.

A perspective view illustrating the first embodiment and schematically showing the overall configuration of the winding device. Perspective view of the main part of the index part Perspective view of the guide unit Bottom view showing the positional relationship between the guide unit at the intermediate position and the split core Bottom view showing the state of winding in the middle of moving the guide unit to the first rotation position (No. 1) Bottom view showing the state of winding in the middle of moving the guide unit to the first rotation position (Part 2) Enlarged bottom view showing the state of the guide at the line skipping action position of the line skipping guide Bottom view showing the state of the end of winding when the guide unit is moved to the second rotation position (No. 1) Bottom view showing the end of winding when the guide unit is moved to the second rotation position (Part 2) Bottom view showing the end of winding when the guide unit is moved to the second rotation position (Part 3) Enlarged bottom view showing the state of the guide at the line flow prevention action position of the line flow prevention guide A cross-sectional view showing a state in which the coil is being wound with respect to the tooth portion of the split core and an enlarged view of the portion a thereof. Bottom view showing the state of the end of coil winding with respect to the tooth portion of the split core. Perspective view of the split core Floor plan of the stator The second embodiment is shown, and the plan view of the stator is shown. Enlarged bottom view showing the state of the guide at the line flow prevention action position of the line flow prevention guide Enlarged bottom view showing the state of the guide at the line skipping action position of the line skipping guide

(1) First Embodiment Hereinafter, the first embodiment applied to the manufacture of a stator as an armature of a brushless motor, for example, will be described with reference to FIGS. 1 to 15. Further, in the present embodiment, a case where a coil is wound around each tooth portion of the split core as a winding object is taken as a specific example, and a so-called flyer type winding device is adopted.

First, the split core as a winding object will be briefly described. FIG. 14 shows the appearance of one split core 1, and FIG. 15 shows how the stator 2 is configured by combining three split cores 1, that is, split cores 1 for three phases. As shown in FIG. 14, the divided core 1 is provided with four teeth portions 3 formed by laminating silicon steel plates, for example, arranged side by side at intervals of 90 degrees in the circumferential direction, and the teeth portions 3 are ring-shaped. It is connected by the yoke portion 4 on the inner peripheral side. A coil 6 is formed by winding a wire 5 made of, for example, a copper wire around each of the teeth portions 3. As shown in FIG. 15, the stator 2 is configured by combining three split cores 1 and includes twelve coils 6 arranged in an annular shape.

FIG. 1 schematically shows the overall configuration of the winding device 11 according to the present embodiment. Here, the winding device 11 is roughly divided into an index portion 12 in which the split core 1 as a winding object is arranged, and a winding processing portion 13 for winding the coil 6. In the following description, when the direction or direction is referred to, the index portion 12 will be described as the front side and the winding processing portion 13 will be described as the rear side. That is, the X-axis direction in FIG. 1 is the front-back direction, the Y-axis direction is the left-right direction, and the Z-axis direction is the up-down direction. The index portion 12 and the winding processing portion 13 are provided on the floor portion F side by side in the X-axis direction, that is, in the front-rear direction.

Among them, the index unit 12 is configured as follows. That is, on the cylindrical base portion 14, a transport turntable 15 that is long in the front-rear direction is rotatably provided at the center thereof about the vertical axis. The transport turntable 15 is configured to be rotationally driven by 180 degrees by a transport servomotor (not shown) provided in the base portion 14. The transport turntable 15 is provided with two sets of units to be wound symmetrically in the front-rear direction, and has a so-called two-head type. Hereinafter, the rear side, that is, the side facing the winding machined portion 13, is referred to as a machining position, and the front side is referred to as a preparation position.

On the transport turntable 15, support cylinder portions 16 and 16 are provided symmetrically located on both front and rear ends and extend upward, and the machining index table 17 is vertically placed on each of the support cylinder portions 16. It is rotatably provided around the shaft. Each of the processing index tables 17 is rotationally driven by an index servomotor 18 by 90 degrees. A work support portion 19 as a support portion is provided on each index table 17 for processing, and as shown in FIG. 2, the split core 1 is set in the work support portion 19. .. In this case, the split core 1 is supported horizontally by the work support portion 19 so that the tooth portions 3 face the front-back and left-right directions.

In this winding device 11, winding processing is performed on the split core 1 supported by the work support portion 19 located at the processing position on the rear side, that is, on the winding processing portion 13 side. At this time, the winding work of the coil 6 is executed with respect to the teeth portion 3 facing the horizontal rearward among the four teeth portions 3. This position is referred to as a working position W. Further, the horizontal front-rear direction, that is, the X direction is referred to as an axial direction of the coil 6. When the winding work of the coil 6 for one tooth portion 3 is completed, the split core 1 supported by the machining index table 17 and the work support portion 19 is rotated 90 degrees, and the next tooth portion 3 is moved to the work position W. It is moved, and the winding work of the coil 6 is continuously executed. By repeating this four times, the winding operation for one divided core 1 is performed.

At this time, while the winding processing is being performed in the work support portion 19 located at one of the transport turntables 15, that is, the machining position on the rear side, the work support portion 19 located at the preparation position on the other side, that is, the front side. Is to remove the split core 1 after the winding operation and to set the next split core 1. With this, the transport turntable 15 can be rotated 180 degrees to sequentially switch the machining position and the preparation position, and the winding machining can be performed sequentially. A guide strut 20 is provided at the center of the transport turntable 15 so as to extend upward, and the guide strut 20 is provided with a guide unit, a rotation mechanism, and the like, as will be described later.

On the other hand, the winding processing portion 13 is configured as follows. That is, as shown in FIG. 1, a moving base 21 is provided on the floor portion F so as to be movable in the front-rear direction by a moving motor or the like (not shown), and a head portion 22 is provided on the moving base 21. On the front side of the head portion 22, a flyer 23 as a delivery portion for sending out the strands 5 from a strand supply source (not shown) is rotatably provided around a rotation axis O extending in the horizontal front-back direction, and is also provided in the front-rear direction. It is provided so that it can move in the direction. The rotation axis O coincides with the central axis of the teeth portion 3 arranged at the working position W. Further, on the front surface side of the head portion 22, a movable former 24 is provided located inside the flyer 23.

The flyer 23 is located on the outer periphery of the movable former 24, and is supported by a head portion 22 so as to be rotatable and forward / backward. It is provided with, for example, two arm portions 26 provided so as to extend forward from two upper and lower positions. A nozzle 26a for feeding out the wire rod 5 with a predetermined tension is provided at the tip of the arm portion 26. The flyer 23 is reciprocated in the front-rear direction by a front-rear drive motor (not shown), and is rotated at high speed by a winding drive mechanism including a winding drive motor (not shown). As a result, the nozzle 26a of the arm portion 26 rotates around the rotation axis O around the teeth portion 3 arranged at the work position W, and is configured to be moved in the axial direction, that is, in the front-rear direction. There is.

The movable former 24 is provided at a portion facing the working position W, and includes a pair of left and right guide plates 24a and 24b. These guide plates 24a and 24b are for guiding the wire rod 5 drawn out from the nozzle 26a to a predetermined position of the teeth portion 3, and as shown in FIG. 10 and the like, the head is provided by a front-back moving mechanism (not shown). Each of the portions 22 is configured to be independently moved in the front-rear direction. With this, the flyer 23 and the movable former 24 execute the winding operation of the wire 5 with respect to the outer periphery of the tooth portion 3, and the coil 6 is formed.

By the way, in this winding device 11, as described above, the teeth portion 3 of one of the split cores 1 supported by the work support portion 19 at the machining position in the index portion 12 is moved to the work position W and wound. The flyer 23 and the movable former 24 of the wire processing portion 13 execute the winding operation of the wire 5 with respect to the outer periphery of the teeth portion 3. As shown in FIG. 12, the winding operation of the wire 5 with respect to the teeth portion 3 is performed in a plurality of rows in the axial direction of the coil 6, that is, in the front-rear direction, and over a plurality of layers in the radial direction of the coil 6, and the coil 6 is formed. It is formed in an aligned state, and the space factor is improved.

However, in the middle of winding the wire 5 with respect to the tooth portion 3, for example, in a place where about 4 layers are wound, the wire 5 is already wound due to the tension applied to the wire 5. There is a circumstance that slip occurs in the axial direction, that is, in the downward direction in FIG. 12 on the outer periphery of the portion. Therefore, there is a problem that the wire 5 that should be originally wound around the A portion is misaligned and wound around the A ′ portion. Therefore, in the present embodiment, the wire skipping guide 27 that guides the wire 5 to the required position in the axial direction and the wire skipping guide 27 are moved between the retracted state and the wire skipping action position during the winding operation. A first moving mechanism for moving is provided.

Further, as shown in FIG. 13, at the winding end portion B of the coil 6, originally, although the wire 5 is originally desired to be sent from the top to the bottom in a form close to a right angle in the figure, the two-dot chain line B in the figure is formed. As indicated by ′, there is a possibility that a so-called linear flow, in which the strand 5 flows in an oblique direction, may occur. When this line flow occurs, the end portion of the coil 6 is slackened and thus bulges toward the outer peripheral side, causing problems such as contact and interference with adjacent coils 6. Therefore, in the present embodiment, the line flow prevention guide 28 for preventing the line flow in which the strands 5 flow diagonally at the end of winding of the coil 6 and the line flow prevention guide 28 are set to the retracted state and the line flow prevention action position. A second moving mechanism is provided to move between and. It should be noted that the prevention of wire flow and the shaping of the winding end portion of the coil 6 are performed by the cooperation between the wire flow prevention guide 28 and the movable former 24.

At this time, in the present embodiment, the wire skipping guide 27 and the wire flow prevention guide 28 are attached to one mounting member and unitized as a guide unit 29. At the same time, the first moving mechanism and the second moving mechanism are shared as the rotating mechanism 30. As described above, the guide unit 29 and the rotation mechanism 30 are assembled to the guide strut 20 portion of the index portion 12. Hereinafter, the guide unit 29 and the rotation mechanism 30 will be described with reference to FIGS. 2 to 11.

As shown in FIGS. 1 and 2, an assembly base portion 31 is provided at the upper end portion of the guide support column portion 20, and the guide unit 29 is a front-rear portion of the upper surface of the assembly base portion 31. In addition, two sets are symmetrically assembled. At this time, the assembly base portion 31 is provided so as to be vertically movable with respect to the guide support column portion 20, and the assembly base portion 31 and the guide unit 29 are moved downward from the split core 1 by an elevating cylinder (not shown). It is moved between the separated lowering position and the ascending position where the winding operation is guided from below with respect to the tooth portion 3 of the working position W.

Hereinafter, the guide unit 29 located at the machining position on the right side in FIG. 2 will be described as a representative. As shown in FIGS. 3 and 4, the guide unit 29 is configured by attaching the wire skip guide 27 and the wire flow prevention guide 28 to a mounting plate 32 as a mounting member. The guide unit 29 is configured as a C-shape or a crescent shape when viewed from the upper surface as a whole. As shown in FIGS. 3 and 4, the mounting plate 32 has a substantially right-angled isosceles triangle shape in which right-angled vertices are arranged on the front side, and mounting portions 33 and 34 are provided at the corners at both right and left ends thereof. Has been done. These mounting portions 33 and 34 have a rectangular shape and are arranged so as to extend rearward at an angle of 45 degrees with respect to the front-rear direction.

As shown in FIG. 3, the base end portion of the wire skipping guide 27 is attached to the upper surface of the right mounting portion 33 by two bolts 35, and the line flow prevention guide is attached to the upper surface of the left mounting portion 34. The base end portion of 28 is attached by two bolts 35. The line skipping guide 27 extends diagonally backward and slightly to the left from the base end portion, and has a slightly thick and narrow tip portion. As shown in FIG. 7 and the like, the side portion facing the rear side of the tip portion of the wire skipping guide 27 guides the strand 5 to the required axial position, that is, the axial intermediate portion of the tooth portion 3. It is said to be 27a.

As shown in FIG. 3, the line flow prevention guide 28 extends diagonally backward and slightly to the right from the base end portion, and the tip portion is configured to have a slightly thick and wide shape. As shown in FIGS. 11 and 10, the right-angled portion from the side facing the rear side of the tip portion of the line flow prevention guide 28 to the tip side portion is the wire in cooperation with the movable former 24. The tip guide portion 28a is used to prevent the so-called linear flow in which the 5 flows in an oblique direction and to feed the strand 5 at the end of winding in a form close to a right angle.

The wire skip guide 27 and the wire flow prevention guide 28 are attached to both sides of the guide unit 29, so that the split core 1 supported by the work support portion 19 is provided on both sides of the tooth portion 3 at the work position W in the radial direction. Placed at the bottom. Further, in the present embodiment, the wire skipping guide 27 and the wire flow prevention guide 28 are attached to the attachment portion 33 and the attachment portion 34 of the attachment plate 32 so that the attachment positions can be adjusted, respectively.

In this case, as shown in FIG. 4, the mounting portion 33 is provided with two long holes 33a that are long in the diagonal 45-degree direction, that is, in the arrow C1 direction, as holes through which the bolt 35 is passed. By changing the relative bolt tightening position along 33a, the position of the line skipping guide 27 in the front-rear direction, that is, in the arrow C1 direction is adjusted. Similarly, the mounting portion 34 is provided with two long holes 34a that are long in the diagonal 45-degree direction, that is, in the arrow C2 direction, as holes through which the bolt 35 is passed, and the relative bolts along the long holes 34a are provided. By changing the tightening position, the position of the line flow prevention guide 28 in the front-rear direction, that is, in the arrow C2 direction is adjusted.

Further, when the wire skip guide 27 and the wire flow prevention guide 28 are mounted on the mounting portion 33 and the mounting portion 34, as shown in a part of FIG. 3, an arbitrary number of thin plate-shaped height adjusting spacers 36 are sandwiched. It is configured to be possible. With this, the line skip guide 27 and the line flow prevention guide 28 can be adjusted in the mounting height position, respectively, by not sandwiching the spacer 36 or by changing the number of sandwiched spacers 36. In this way, the line skip guide 27 and the line flow prevention guide 28 are each mounted on the mounting plate 32 so that the positions in the front-rear direction and the positions in the vertical direction can be finely adjusted.

The guide unit 29 is rotatably attached to the assembly base portion 31 at a substantially central portion of the mounting plate 32 about a vertical swivel shaft T. The swivel shaft T is arranged at a position displaced back and forth from the rotation center axis of the transport turntable 15. At this time, as shown in FIG. 3 and the like, the cam follower 37 is provided on the upper surface of the mounting plate 32 so as to be slightly forward of the swivel shaft T so as to be convex upward. The mounting plate 32 and thus the guide unit 29 are rotatable in the arrow D direction and the arrow E direction from the intermediate positions shown in FIGS. 4 and 2.

At the intermediate position of the guide unit 29, as shown in FIGS. 4 and 2, both the line skipping guide 27 and the line flow prevention guide 28 are in a retracted state separated from the teeth portion 3 at the working position W to the left and right. At the first rotation position where the guide unit 29 is rotated by a predetermined amount from the intermediate position, that is, in the direction of arrow D, as shown in FIGS. 5 to 7, the line skipping guide 27 is at the working position W. The line flow prevention guide 28 is moved to a line skipping action position located below the tooth portion 3 of the above, and the line flow prevention guide 28 is in a retracted state more distant from the working position. In this first rotation position, the wire skipping guide 27 is positioned at the wire skipping action position below the tooth portion 3 during the winding operation, and guides the strand 5 to the required position. The gap between the wire skipping guide 27 and the outer surface, that is, the lower surface of the tooth portion 3 at this wire skipping action position is set to 70% or less of the winding diameter of the coil 6, whereby the wire 5 is formed by the wire skipping guide 27. It is prevented from entering the lower surface.

At the second rotation position where the guide unit 29 is rotated from the intermediate position to the other, that is, in the direction of arrow E, as shown in FIGS. 8 to 11, the line flow prevention guide 28 is a tooth at the working position W. The line skipping guide 27 is moved to a line flow preventing action position located below the portion 3, and the line skipping guide 27 is in a retracted state farther from the working position. In this second rotation position, the line flow prevention guide 28 is positioned at the line flow prevention action position below the coil 6 at the end of winding of the tooth portion 3, and is shaped without flowing the wire 5. As shown in FIG. 1, two sets of the above-mentioned guide units 29 are symmetrically provided in the front and rear portions of the assembly base portion 31.

The rotation mechanism 30 for moving the guide unit 29 between the intermediate position, the first rotation position, and the second rotation position is configured as follows. That is, as shown in FIGS. 3 and 4, the cam follower 37 is provided on the upper surface of the mounting plate 32 of the guide unit 29 so as to be slightly forward of the swivel shaft T and to be convex upward. .. As shown in FIG. 2 and the like, the rotation mechanism 30 includes a drive lever 38 and a stopper 39 provided on the assembly base portion 31, two turning cylinders (not shown) for driving the drive lever 38, and the like. It is composed of.

The drive lever 38 is configured to be long in the front-rear direction so as to straddle both the upper surfaces of the mounting plate 32 of the guide unit 29 located symmetrically in the front-rear direction, and rotates in the directions of arrow D'and arrow E'around the vertical axis. It is provided as possible. At this time, long holes 38a and 38a are provided in the front and rear ends of the drive lever 38, and the cam followers 37 of the guide units 29 are engaged with these long holes 38a. The stopper 39 is for regulating the rotation range of the arrow D'and the arrow E'of the drive lever 38, and is provided so that the position can be adjusted in each direction.

With this, the drive lever 38 is rotated by the turning cylinder from the neutral position facing the front and back to the arrow D'and the arrow E', respectively. At this time, since the cam follower 37 is engaged with the elongated hole 38a, the guide unit 29 located at the machining position is rotated around the swivel shaft T by the arrows D and E, respectively. As a result, the guide unit 29 has an intermediate position, a first rotation position where the line skipping guide 27 is located at the line skipping action position, and a second rotation position where the line flow prevention guide 28 is located at the line flow prevention action position. Is moved to and from the rotation position of.

In this way, one rotation mechanism 30 is configured to drive two sets of guide units 29. Further, when the guide unit 29 is moved to the first rotation position and the second rotation position by setting the position of the rotation shaft T of the guide unit 29, the line skip guide 27 and the line flow prevention guide 28 are moved. It is configured so as not to interfere with the other teeth portions 3 of the split core 1 supported by the work support portion 19 and the coil 6 wound around the teeth portions 3.

Although not shown, the winding device 11 is provided with a control device mainly composed of a computer. With this control device, as described above, in the index unit 12, the transfer servomotor of the transfer turntable 15, the index servomotor of the processing index table 17, the elevating cylinder of the guide unit 29, and the rotation mechanism 30 Each part such as the moving motor of the moving base 21, the winding drive motor and the front-rear drive motor of the flyer 23, and the front-back movement mechanism of the movable former 24 in the turning cylinder and the winding processing unit 13 is controlled. Now, as described in the next process description, the winding work is automatically executed by the software configuration of the control device.

Next, the operation of the above configuration will be described with reference to FIGS. 4 to 13. In the winding device 11, the winding method according to the present embodiment is executed as follows. That is, first, in the index portion 12, the work support portion 19 in which the split core 1 is set is moved to the machining position, and the winding operation by the winding machining portion 13 with respect to the outer circumference of the teeth portion 3 at the work position W starts. Will be done. In this winding operation, the movable former 24 is advanced while the tip of the wire 5 is held at the winding start position of the split core 1, and the wire 5 is pulled from the nozzle 26a of the arm 26 with a predetermined tension. This is done by rotating the flyer 23 while feeding it and reciprocating it in the axial direction, that is, in the front-rear direction.

As a result, as shown in FIG. 12, the strands 5 are wound in a plurality of rows in the axial direction in which the rotating shaft O extends, that is, in the front-rear direction, and in the radial direction of the coil 6, and the strands 5 are wound in an aligned manner. Will be done. At this time, as shown in FIG. 4, the guide unit 29 is in the intermediate position and the split core from the start of the winding operation for one tooth portion 3 to the winding of the middle portion, for example, up to four layers. It is located in a descending position slightly downward from 1. As a result, both the wire skipping guide 27 and the wire flow prevention guide 28 are in the retracted state and do not interfere with the winding operation.

Then, in the middle of the winding operation described above, in this case, when the winding of the four layers is completed, the guide unit 29 is raised to the raised position as shown in FIGS. 5 and 6, and the rotation mechanism 30 increases the guide unit 29. It is rotated in the direction of arrow D and moved from the intermediate position to the first rotation position. As a result, the wire skipping guide 27 is moved from the retracted state to the wire skipping action position, and the wire skipping step of guiding the wire 5 sent out from the nozzle 26a to the required position in the axial direction is executed. At this first rotation position, the line flow prevention guide 28 is in a retracted state farther from the teeth portion 3 at the working position W.

In this state, as shown by the solid line A in FIG. 7, the guide side 27a of the line skipping guide 27 guides the strand 5 to the required position in the axial direction, that is, the intermediate portion in the axial direction of the tooth portion 3. As a result, the wire 5 is guided by the wire skipping guide 27, and the winding proceeds from the state of FIG. 5 to the state of FIG. It becomes possible to prevent the alignment of the strands 5 from being disturbed. When the line skipping step is completed, the guide unit 29 is lowered to the lowered position and returned to the intermediate position.

When the winding operation of a predetermined number of turns is performed on one tooth portion 3, the guide unit 29 is raised to the raised position at the winding end portion of the coil 6, and the rotation mechanism 30 is raised as shown in FIG. 8 and the like. This time, it is rotated in the direction opposite to the above, that is, in the direction of arrow E, and is moved from the intermediate position to the second rotation position. Now, this time, the line flow prevention guide 28 approaches the work position W from the opposite side, is moved from the retracted state to the line flow prevention action position, and the line flow prevention step of preventing the line flow in which the strand 5 flows diagonally. Is executed.

In this state, the strand 5 is wound from the state of FIG. 8 to the state of FIG. 9 in a state where the tip guide portion 28a of the wire flow prevention guide 28 is arranged at the end of winding, and further, FIG. As shown in the figure of the movable former 24, the guide plate 24b on the left side advances. As a result, as shown in FIG. 11, the wire 5 is shaped to follow the outer shape of the tip guide portion 28a of the line flow prevention guide 28, and the wire 5 is above as shown by the solid line B in FIG. It will be sent from to the bottom in a form close to a right angle.

When the line flow prevention step is completed, the guide unit 29 is lowered to the lowered position and returned to the intermediate position. In this way, when the winding operation of the coil 6 with respect to one tooth portion 3 is completed, the winding end processing of the wire 5 is performed, and the machining index table 17 and the work support portion 19 are rotated by 90 degrees. .. As a result, the unwound tooth portion 3 next to the tooth b3 around which the coil 6 of the split core 1 is wound is moved to the working position W, and the winding work of the coil 6 is continuously executed in the same manner.

By repeating the winding operation four times, the winding work of the coil 6 with respect to the four teeth portions 3 of one divided core 1 is completed. As described above, while the winding work for the split core 1 supported by the work support portion 19 is being performed at the machining position, the next split core 1 is placed on the work support portion 19 located at the preparation position. It is set. When the winding work for the split core 1 is completed, the transfer turntable 15 is rotated 180 degrees, and the work support portion 19 supporting the next split core 1 is moved from the preparation position to the machining position, and the same winding as described above is performed. Line work is performed.

According to the winding device 11 and the winding method of the present embodiment as described above, the following effects can be obtained. That is, in the middle of the winding operation of the coil 6 with respect to the tooth portion 3 at the working position, a wire skipping guide 27 for guiding the strand 5 to a required position in the axial direction is provided, and the wire skipping action position is set by the rotation mechanism 30. It is configured to move between the retracted state. As a result, the wire skipping step is executed in the middle of the winding operation of the coil 6, so that the alignment disorder of the strands 5 can be prevented.

In this case, since it is only necessary to reciprocate the line skipping guide 27 between the retracted state and the line skipping action position, the rotation mechanism 30 can be made without a very complicated configuration. Therefore, according to the present embodiment, the wire 5 is wound around the tooth portion 3 of the split core 1 to form the coil 6, and the coil 6 is formed by winding the wire 5 in the middle of the winding operation with a relatively simple configuration. It is possible to obtain an excellent effect that the problem of misalignment of 5 can be solved. By the way, in the present embodiment, the cost can be reduced by 80% and the size can be reduced by 80% as compared with the case where the ball screw type mechanism is provided for the movement of the guide member.

Further, in the present embodiment, a wire flow prevention guide 28 for preventing the wire flow in which the wire 5 at the end of winding of the coil 6 flows diagonally is provided, and the rotation mechanism 30 provides a line flow prevention action position and a retracted state. It was configured to move between. As a result, by executing the wire flow prevention step at the winding end portion of the coil 6, the generation of the linear flow in which the strands 5 flow in the diagonal direction is prevented in advance, and the end portion of the coil 6 is slackened and thus the outer peripheral side. It is possible to prevent the bulge from occurring. In this case as well, the rotation mechanism 30 only requires the line flow prevention guide 28 to be reciprocated between the retracted state and the line flow prevention action position, so that a relatively simple configuration can be used.

At this time, in the present embodiment, the winding end portion of the coil 6 is shaped by the cooperation of the movable former 24 and the line flow prevention guide 28. As a result, both the prevention of the line flow by the line flow prevention guide 28 and the shaping of the outer peripheral surface of the coil 6 by the movable former 24 are performed, so that the winding end portion of the coil 6 is shaped into a required shape. , Can be done more reliably.

In particular, in the present embodiment, the moving mechanism for moving the line skipping guide 27 and the line flow prevention guide 28 is composed of one shared rotation mechanism 30. As a result, the moving mechanism is shared as compared with the case where the first moving mechanism for moving the line skipping guide 27 and the second moving mechanism for moving the line flow prevention guide 28 are separately provided. This makes it possible to complete the configuration more easily.

Further, in the present embodiment, the guide unit 29 is configured by attaching a wire skipping guide 27 and a wire flow prevention guide 28 to a mounting plate 32 having mounting portions 33 and 34 on both sides, and the guide unit 29 is configured by a rotation mechanism. 30 is configured to rotate between the intermediate position, the first rotation position, and the second rotation position. As a result, both the line skipping guide 27 and the line flow prevention guide 28 are provided, and the configuration can be completed more easily, which is more effective.

In the present embodiment, in the guide unit 29, the wire skip guide 27 and the wire flow prevention guide 28 are configured so that the mounting positions can be adjusted with respect to the mounting portions 33 and 34 of the mounting plate 32, respectively. In this case, severe position accuracy is required for both the line skipping action position of the line skipping guide 27 and the line flow prevention action position of the line flow prevention guide 28. By making it possible to adjust the positions of the mounting portions 33 and 34, the effect of preventing the alignment disorder of the strands 5 in the middle of the winding operation and the effect of preventing the wire flow at the end of the winding of the coil 6 can be achieved. Can be better.

(2) Second Embodiment, Other Embodiments 16 to 18 show a second embodiment. This second embodiment differs from the first embodiment in that an integrated stator core 41 is used as the winding object instead of the split core 1. As shown in FIG. 16, the integrated core 41 includes a large number of, for example, 12 teeth portions 42 arranged in an annular shape, and a wire 5 is wound around each teeth portion 42 to form a coil 6. .. Also in this second embodiment, by executing the winding method by the winding device, the winding operation is executed for the plurality of teeth portions 42 of the integrated core 41 in the required order.

At this time, as shown in FIG. 17, in the middle of the winding operation, the wire skipping guide 43 is moved from the retracted state to the wire skipping action position, and the wire skipping step of guiding the wire 5 to the required position in the axial direction. Is executed. Further, as shown in FIG. 18, at the winding end portion of the coil 6, the line flow prevention guide 44 is moved from the opposite side to the line flow prevention action position, and the wire flow prevention prevents the wire flow from flowing diagonally. The process is executed. Therefore, even in this second embodiment, the same actions and effects as those in the first embodiment can be obtained.

In the above embodiment, the present invention is applied to the flyer type winding device, but when the winding operation is executed while rotating the winding object such as a so-called nozzle type winding device. It can also be applied to. In the above embodiment, the index portion 12 is provided with two sets of work support portions 19 and a guide unit 29, so-called two-head type, but a single-head type or a multi-head type with three or more heads may be used. ..

In the above embodiment, both the line skipping guide 27 and the line skipping prevention guide 28 are provided, but a configuration may be configured in which only the line skipping step by the line skipping guide 27 is executed. Further, when both the line skipping guide 27 and the line flow prevention guide 28 are provided, the first moving mechanism and the second moving mechanism for moving them may be provided separately, and the moving mechanism is shared. The configuration of the rotation mechanism 30 is not limited to this, and various deformations such as linear movement of the guide are possible. In the case of two heads, each guide unit may be driven by a separate drive mechanism.

The present disclosure has been described in accordance with the examples, but it is understood that the present disclosure is not limited to the examples and structures. The present disclosure also includes various variations and variations within a uniform range. In addition, various combinations and forms, as well as other combinations and forms that include only one element, more, or less, are within the scope and scope of the present disclosure.

In the drawing, 1 is a split core (winding object), 2 is a stator (armature), 3 and 42 are teeth parts, 5 is a wire, 6 is a coil, 11 is a winding device, and 12 is an index part. 13 is a winding processing part (winding drive mechanism), 15 is a transfer turntable, 17 is a processing index table, 19 is a work support part (support part), 22 is a head part, 23 is a flyer, and 24 is a movable former. 26 is an arm part, 26a is a nozzle, 27 and 43 are line skipping guides, 27a is a guide side, 28 and 44 are line flow prevention guides, 28a is a tip guide part, 29 is a guide unit, and 30 is a rotation mechanism (the first). 1 moving mechanism, 2nd moving mechanism), 32 is a mounting plate (mounting member), 33 and 34 are mounting portions, 38 is a drive lever, and 41 is an integrated core (winding object).

Claims (8)

A winding device (11) for forming a coil (6) by winding a wire (5) around a winding object (3) composed of a core of an armature or a bobbin mounted on the core.
The support portion (19) on which the winding object is set and
A delivery unit (23) that sends out the strands from the nozzle (26a),
The nozzle is moved in the axial direction while rotating around the winding object relative to the winding object, and a plurality of rows of coils in the axial direction and a plurality of layers in the radial direction are wound. The winding drive mechanism (13) that executes the rotation operation and
It is movably provided between the line-skipping action position arranged on the outer peripheral portion of the winding object and the retracted state separated from the winding object, and is sent out from the nozzle at the wire-skipping action position. A wire skipping guide (27) that guides the wire to the required position in the axial direction, and
A winding provided with a first moving mechanism (30) for moving the wire skipping guide from the retracted state to the wire skipping action position in the middle of the coil winding operation by the winding drive mechanism. Device. The line flow prevention action position arranged on the outer peripheral portion of the winding object and the retracted state separated from the winding object are movably provided, and the line flow prevention action position is the said. A wire flow prevention guide (28) that prevents the wire flow in which the strands flow diagonally at the end of winding of the coil, and a wire flow prevention guide (28).
The winding according to claim 1, further comprising a second moving mechanism (30) for moving the wire flow prevention guide from the retracted state to the wire flow prevention action position at the winding end portion of the coil by the winding drive mechanism. Wire device. A movable former (24) for guiding the wire derived from the nozzle toward the winding object is provided.
The winding device according to claim 2, wherein the winding end portion of the coil is shaped by the cooperation between the movable former and the line flow prevention guide. The wire skipping guide and the linear flow prevention guide are provided at both sides in the radial direction of the winding object supported by the support portion.
The winding device according to claim 2 or 3, wherein the first moving mechanism and the second moving mechanism are shared. It has mounting portions (33, 34) supported by the support portion on both sides in the radial direction of the winding object, and the wire skipping guide is mounted on one mounting portion and the other. A mounting member (32) to which the line flow prevention guide is mounted on the mounting portion, and
Rotation to move the mounting member between an intermediate position, a first rotation position rotated from the intermediate position to one side, and a second rotation position rotated from the intermediate position to the other. Equipped with a mechanism (30)
At the intermediate position of the mounting member, both the line skipping guide and the line flow prevention guide are in the retracted state, and at the first rotation position, the line skipping guide is moved to the line skipping action position, and the first At the rotation position of 2, the line flow prevention guide is configured to be moved to the line flow prevention action position.
The winding device according to claim 4, wherein the rotating mechanism shares the first moving mechanism and the second moving mechanism. The winding device according to claim 5, wherein the wire skip guide and the wire flow prevention guide are each attached to the attachment portion of the attachment member so that the attachment position can be adjusted. A winding method in which a wire (5) is wound around a winding object (3) composed of a core of an armature or a bobbin mounted on the core to form a coil (6).
The strands are sent out from the nozzle (26a) of the delivery unit (23) to the winding object set on the support portion, and the nozzle is relatively targeted for winding by the winding drive mechanism (13). Along with performing a winding operation of winding a plurality of rows of coils in the axial direction and a plurality of layers in the radial direction by moving the coil in the axial direction while rotating the circumference of the object.
The winding guide (27) is provided so as to be movable between the line skipping action position arranged on the outer peripheral portion of the winding object and the retracted state separated from the winding object. In the middle of the coil winding operation by the rotation drive mechanism, the wire skipping action position is moved from the retracted state to the wire skipping action position by the first moving mechanism (30), and the wire sent out from the nozzle is required in the axial direction. A winding method that performs a wire skipping process that guides the position. A line flow prevention guide (28) provided so as to be movable between a line flow prevention action position arranged on the outer peripheral portion of the winding object and a retracted state separated from the winding object. At the winding end of the coil by the winding drive mechanism, the second moving mechanism (30) moves the wire from the retracted state to the line flow preventing action position, and prevents the wire from flowing diagonally. The winding method according to claim 7, which includes a flow prevention step.

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