JP2000324771A - Winding machine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To simplify the configuration of a winding machine. A conductive wire is wound around a rotating bobbin 1 to form a coil. The guide members 7 and 8 come into contact with the conductor wound around the winding frame 1 and define the winding position of the conductor. The guide members 7 and 8 are held by a link mechanism 9 provided so as to rotate synchronously with the bobbin coaxially with the bobbin rotation axis. When the third actuator 21 moves the drive link 13 in the axial direction, the guide members 7, 8 move in the reel diameter direction. When the first actuator 17 moves the holding link 11 in the axial direction, the guide members 7, 8 move in the axial direction together with the entire link. Further, when the second actuator 19 expands and contracts the arm 8a, the guide member 8 moves independently of the guide member 7. These actuators may not rotate with the bobbin. Since the actuator does not need to be mounted on the rotation mechanism, the configuration of the device is simple, and the load on the reel rotating motor can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding machine for forming a coil by winding a conducting wire around a rotating bobbin.
The present invention relates to a device that can reliably define a winding position of a conductive wire with a simple configuration.

[0002]

2. Description of the Related Art In rotating electric machines such as electric motors and generators,
To increase the output, the number of windings of the coil is increased. However, simply increasing the number of windings causes an increase in the size of the rotating electric machine. Therefore, the ratio of the sum of the cross-sectional areas of the conductors forming the coil to the cross-sectional area of the slot accommodating the coil between the magnetic poles of the rotating electric machine (hereinafter referred to as space factor) is increased. To increase the space factor means to arrange conductors without gaps, and for this purpose, a coil forming method and a coil forming apparatus for aligning and winding conductors have been developed. Japanese Patent Application Laid-Open No. 7-183152 discloses such an apparatus.

In order to improve the space factor, it is effective to use a rectangular conductor. A rectangular conductor is a conductor having a square cross-sectional area. The use of a rectangular conductor can further reduce the gap between the conductors as compared to using a conductor having a circular cross section.

[0004] In such coil forming, a conductor is wound around a magnetic pole of a rotating electric machine or a winding frame (core metal) having a shape corresponding to the pole without leaving a gap with an adjacent conductor, and the entire length of the coil is reduced. When the winding is completed, the layer above is wound similarly to form a predetermined number of layers.

[0005]

In the above-described winding of a wire for coil formation, if a displacement of the wire occurs at the time of changing the row where the winding of the wire is changed from one row to the next row, the accuracy of the shape of the coil is reduced. Decrease. When the amount of displacement of the conductor increases, the number of windings of the conductor in one layer decreases.

[0006] In order to avoid such a situation, it is necessary to prevent the conductor from being displaced due to the column change. For example, in Japanese Patent Application No. 11-13051 filed by the present applicant, a line changing portion forming unit is provided near a bobbin. With this unit,
Before the wire is wound around the winding frame, the lead wire is press-formed and the S
A letter shape is formed.

Here, if the winding frame is stopped many times in order to prevent the wire from shifting, the productivity of the coil is reduced.
Therefore, it is desired to prevent the displacement of the conductive wire without stopping the winding frame. For this purpose, it is conceivable to rotate the unit for preventing displacement together with the bobbin synchronously. However, in this case, there is a disadvantage that the configuration of the rotating part becomes large. In particular, since the actuator that moves the unit is also rotated together with the bobbin, the apparatus becomes complicated and the load on the motor that rotates the bobbin increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a winding machine having a simple configuration and capable of preventing a displacement of a winding position of a conductive wire while a winding frame continues to rotate. Is to do.

[0009]

In order to achieve the above object, the present invention relates to a winding machine for forming a coil by winding a conductive wire around a rotating bobbin. A guide member for defining a winding position of the conductive wire; a guide holding link mechanism provided coaxially with the bobbin rotation axis to rotate synchronously with the bobbin; and a guide holding link mechanism for holding the guide member; and the bobbin and the guide. Link driving means for moving an element constituting the guide holding link mechanism in the reel rotation axis direction without rotating together with the holding link mechanism, wherein the guide holding link mechanism is provided by the link driving means. The movement in the direction of the bobbin rotation axis is converted to the movement of the guide member in the bobbin radial direction.

According to the present invention, the guide member abuts on the conductor to define the winding position of the conductor, thereby preventing the conductor from being displaced. Since the guide member is held by the link mechanism that rotates synchronously with the reel, the guide member can function even when the reel remains rotating.

In particular, according to the present invention, the link mechanism is set so as to convert the movement in the rotation axis direction to the movement of the guide member in the reel diameter direction. Therefore, since the link driving means only needs to provide the link mechanism with movement in the direction of the rotation axis, the link driving means itself can perform its function without rotating together with the bobbin. For example, even with an actuator fixed to a device table or the like, it is easy to apply a force in the rotation axis direction to a rotating link. As described above, since the actuator does not need to rotate with the winding frame, the configuration is simplified,
Also, the load on the reel rotating motor can be reduced.

Preferably, the guide holding link mechanism includes: a holding link for holding the guide member slidably in a reel diameter direction; and a drive link for moving relatively to the holding link in a reel rotation axis direction. A conversion link that connects the drive link and the guide member and converts the movement of the drive link in the bobbin rotation axis direction into the radial movement of the guide member on the holding link in the bobbin radial direction. According to this aspect, the desired movement of the guide member can be achieved with a small number of link members, and the advantage that the configuration is simple is obtained.

Preferably, the holding link has a first cylinder coaxial with the bobbin rotation axis, the drive link has a second cylinder coaxial with the bobbin rotation axis, and the link driving means is And moving the second cylinder relative to the first cylinder. Preferably, the other is inserted inside one of the two cylinders, and the bobbin rotation shaft is inserted further inside. In this aspect, the holding link and the drive link are provided with a cylindrical portion, and the bobbin rotation shaft passes through the cylindrical portion. Therefore, the structure for moving the link mechanism relative to the winding frame while rotating coaxially with the winding frame may be simple, and the apparatus can be downsized.

Preferably, the winding machine further moves the entire guide holding link mechanism in the rotation axis direction with respect to the winding frame without rotating together with the winding frame and the guide holding link mechanism. And driving means for moving the guide member in the direction of the reel rotation axis. According to this aspect, in addition to the above-described movement of the guide member in the reel diameter direction, the guide member moves in the reel rotation axis direction. In this case as well, the force in the direction of the bobbin rotation axis only needs to be applied to the link, so that the actuator does not need to rotate together with the bobbin.

Preferably, the guide member and the guide holding link mechanism are provided on both sides of the winding frame, and one link driving means is provided so as to be able to drive the guide holding link mechanisms on both sides. Have been.
According to this aspect, there is an advantage that the number of link driving units can be reduced.

Preferably, a pair of guide members are held by the holding link on both sides of the reel rotating shaft, and the pair of guide members are not rotated together with the reel and the guide holding link mechanism. Driving means is provided for moving one of the members relative to the holding link in the direction of the bobbin rotation axis. Preferably, the driving means is provided so as to apply a force in the direction of the reel rotation axis to the guide member while slidingly contacting the guide member which rotates around the reel rotation axis.

In this aspect, a pair of guide members are provided on both sides of the winding frame rotating shaft, and the pair of guide members are provided so as to be movable to different positions in the direction of the rotating shaft.
The movement of the guide member is performed by driving means provided so as not to rotate with the winding frame. Also in this case, since the driving means does not need to rotate with the bobbin, the configuration of the apparatus is simple and the load on the bobbin rotating motor can be reduced as described above.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention (hereinafter, referred to as embodiments) will be described below with reference to the drawings.

FIG. 1 is a perspective view of the winding machine of the present embodiment, FIG. 2 is a front view, and FIG. 3 is a plan view. Each drawing is partially shown in section and is simplified as appropriate for easy understanding of the invention. FIG. 4 shows the mechanism of the winding machine.

First, the mechanism of the winding machine will be described with reference to FIG. Since the winding machine is configured symmetrically, here, only the right half will be mainly described. The rotating shaft 3 of the winding frame (core metal) 1 is rotatably supported by a device base (not shown). The rotating shaft 3 is rotated by a motor 5.

Guide members 7 and 8 are provided near the winding frame 1 and on both sides of the rotary shaft 3. These guide members come into contact with the conductor wound around the winding frame 1 and define the winding position of the conductor, thereby preventing the conductor from shifting.

The guide members 7, 8 are held by a guide holding link mechanism 9 of the present invention. The link mechanism is provided so as to rotate synchronously coaxially with the rotating shaft 3 as described below, and furthermore, the link mechanism controls the movement of the link element in the direction of the rotating axis in the radial direction of the winding frame of the guide member. It is set to convert to movement.

The link mechanism 9 has a holding link 11, a drive link 13, and a conversion link 15. Holding link 1
1 has a first cylinder 11a provided to rotate synchronously coaxially with the bobbin rotation shaft 3, and a radiating portion 11b extending radially from the first cylinder 11a. In a specific configuration of the device, the radiating section has a disk shape. The radiating portion 11b holds guide members 7, 8 so as to be slidable in the winding frame radial direction.

The drive link 13 is constituted by a second cylinder 13a provided so as to rotate synchronously coaxially with the rotation shaft 3. Rotary shaft 3, first cylinder 11a and second cylinder 13a
Are constrained to each other in the rotational direction, but are not constrained in the axial direction. Therefore, the rotating shaft 3, the holding link 11, and the driving link 13 relatively move in the axial direction.

The conversion link 15 connects the radiating portion 11b of the holding link 11 and the drive link 13. As illustrated, the conversion link 15 is provided obliquely with respect to the rotation shaft 3.

The guide member 8 is held by a holding link 11 via an arm 8a which can be extended and contracted in the direction of the reel rotation axis.

Next, the operation of the link mechanism shown in FIG. 4 will be described.
The first actuator 17 moves the holding link 11 in the rotation axis direction. The holding link 11 moves in the axial direction relatively to the rotating shaft 3, whereby the guide members 7 and 8 move in the rotating shaft direction with respect to the bobbin 1.

The second actuator 19 changes the length of the telescopic arm 8a. Thereby, the guide member 8
It can move relative to the holding link 11 in the direction of the rotation axis, and can be located at a position different from the guide member 7 in the axial direction.

Here, as shown in FIG. 4, the actuator 19 has a fork 19a sandwiching the arm 8a from both sides, and the arm 8a expands and contracts by moving the fork. The fork 19a slides on the arm 8a. The fork 19 is in contact with the arm 8a via a ball so that frictional resistance due to sliding contact hardly occurs. With such a configuration, the actuator 19 can extend and contract the arm without rotating with the bobbin.

The third actuator 21 moves the drive link 13 relative to the holding link 11 in the rotation axis direction. The movement of the drive link 13 is converted by the conversion link 15 into radial movement of the guide members 7, 8. That is, when the drive link 13 approaches the bobbin 1 from the state of FIG. 4, the angle between the rotation shaft 3 and the conversion link 15 decreases.
Then, the guide members 7 and 8 are drawn to the rotating shaft 3.
When the drive link 13 moves away from the bobbin 1, the guide members 7, 8 move away from the rotating shaft 3. The same principle as the umbrella framework is applied.

As described above, the guide members 7 and 8 can move in the rotation axis direction and the radial direction with respect to the winding frame 1 while rotating synchronously with the winding frame 1. The guide members 7, 8 move independently in the direction of the rotation axis and take the same position in the radial direction. Since the structure of the winding machine is symmetrical, a total of four guide members are provided. That is, guide members are arranged on both sides in the radial direction and the rotation axis direction with respect to the bobbin, and move independently of the bobbin 1.

In the present embodiment, the actuators 17, 19, and 21 for moving the link mechanism move the member to be driven only in the direction of the bobbin rotation axis. In this case, the actuators 17, 19, and 21 can perform necessary functions without rotating together with the bobbin 1. Therefore, each actuator is installed on a device base or the like so as not to rotate.

The left and right drive links 13 are moved by one actuator 21. The control unit 23
Are the winding frame rotation motor 5, the actuators 17, 19, 2
1 and other actuators are operated in cooperation.
The control unit 23 sends a control signal to each actuator based on a signal from a sensor provided in the winding machine.

Next, a specific configuration of the winding machine will be described with reference to FIGS.

A bobbin support 32 is provided at both ends of the apparatus base 30, and the bobbin 1 and the rotating shaft 3 are supported by the support 32. Drive belt 3 is attached to pulleys 34 at both ends of rotating shaft 3.
6, the drive belt 36 is also hung on the pulley 40 of the drive shaft 38 under the device base 30. The drive shaft 40 is belt-driven by the reel rotation motor 5, whereby the reel 1 is rotated.

A guide table 42 is provided on the device base 30.
Is installed. The guide table 42 is slidable along the rail 44 provided on the apparatus base 30 in the direction of the reel rotation axis. The left and right tables are independently driven by motors 46a and 46b, respectively. Motor 4
6a and 46b correspond to the first actuator 17 in FIG.

The guide table 42 has a guide holder 48.
Has been fixed. The guide holding base 48 supports a holding ring 50 provided coaxially with the rotating shaft 3. The holding ring 50 is constrained in a rotational direction with respect to the rotating shaft 3 via a driving cylinder 66 described later, and rotates synchronously with the rotating shaft 3. The holding ring 50 is restrained in the axial direction with respect to the guide holding base 48. This holding ring 50 corresponds to the holding link shown in FIG.

The holding ring 50 includes a guide claw arm 54,
A guide claw is provided at the tip of each of the arms 54 and 56. This guide claw corresponds to the guide member in FIG. The guide claw arms 54 and 56 are attached to rails 58 of the retaining ring 50 and are slidable with respect to the retaining ring 50 in the radial direction.

One guide claw arm 56 is extendable in the axial direction, and corresponds to the extendable arm in FIG. The distal end of the arm 56 is attached to the disk 60. The fork 19 a of the actuator 19 fixed to the table 42 sandwiches the disk 60. The fork 19a moves the disk 60 in the axial direction, whereby the arm 56 expands and contracts.

The disc 60 is held by a holding ring 50 and rotates coaxially with the reel 1. Disk 60
Is also attached to the holding ring 50 by an extendable arm 61. The distal end portion of the arm 56 is fixed to the disk 60 in the axial direction, but is provided so as to be movable in the radial direction.

Further, a driving cylinder support 62 is mounted on the guide table 42. The support 62 is attached to a rail 64 on the table 42 and is slidable with respect to the table 42 in the direction of the reel rotation axis.

The driving cylinder support 62 supports the driving cylinder 66. The drive cylinder 66 is provided coaxially with the rotation shaft 3. The drive cylinder 66 is constrained in the rotational direction with respect to the rotation shaft 3, and both rotate synchronously. This drive cylinder 66
Correspond to the drive link described with reference to FIG. Drive cylinder 6
6 is connected to the retaining ring 50 via the conversion link 15.

As described above, the winding machine shown in FIGS. 2 and 3 has the mechanism described with reference to FIG. Therefore, the winding machine operates as described with reference to FIG.
Can move radially and axially with respect to.

Next, a configuration for moving the driving cylinder 66 on the table will be described with reference to FIG. As shown in FIG. 3, a motor 68 is fixed to one guide table 42 (the left table in the present embodiment). The motor 68 corresponds to the third actuator 21 described with reference to FIG.

The motor 68 rotates the first shaft 70 provided in parallel with the bobbin rotation axis. First shaft 70
The ball screw mechanism 7
2 are formed. The support 62 has a T-shape that is arranged upside down, and engages with the first shaft 70 at a leg extending in a direction perpendicular to the rotation axis.

The first shaft 70 extends to the other guide table 42, that is, the right table.
The first shaft 70 is supported by the bearing support 74 at the right table.

A second shaft 76 is provided on the right table in parallel with the first shaft 70, and the second shaft 76 is supported by a bearing support 78. Second shaft 76
Also, like the first shaft 70, the ball screw mechanism is formed by engaging with the driving cylinder support.

The gear 8 attached to the first shaft 70
0 and the gear 82 attached to the second shaft 76 mesh with each other, and the two gears have the same number of teeth. A ball spline mechanism is provided between each shaft and the gear. Therefore, the shafts 70 and 76 respectively
It can move axially relative to 0,82.

When the motor 68 rotates the first shaft 70, the second shaft 76 rotates by the same amount via gears. Then, the ball screw mechanism simultaneously functions on both the left and right tables, and the driving cylinder support 62 moves in the axial direction. As a result, the drive cylinder 66 moves in the axial direction with respect to the holding ring 50.

Since the first shaft 70 and the second shaft 76 rotate by the same amount in the opposite direction, the drive cylinders on both sides are moved by the same amount in the opposite direction on the device base (in the same direction with respect to the bobbin). Move. That is, both drive cylinders approach the bobbin at the same time or move away from the bobbin.

As described above, the shafts 70 and 76 and the gears 80 and 82 are slidable. This sliding movement occurs when the table 42 moves with respect to the device base 30. By this slide, the meshing state of both gears is ensured even if the table 42 moves.

As described above, in this embodiment, the drive cylinders 66 on both sides are simultaneously moved by the same amount by one actuator 68 at all times. Therefore, the four guide claws can be simultaneously moved in the diameter direction of the bobbin and positioned at the same distance from the rotation axis. Then, when each layer of the coil is wound, the four guide claws abut on the conductor of that layer to guide the winding position of the conductor. Since such an operation is performed by only one actuator, there is an advantage that the number of actuators can be reduced.

Next, a configuration for supplying a conductive wire to the bobbin 1 will be described. Referring to the schematic diagram of FIG. 5, four guide claws BL, BR, FL, and FR are located near the bobbin 1. These guide claws correspond to the four guide claws described above. The conductor is connected to a nozzle 8 installed near the bobbin 1.
Supplied from 5. As shown, the nozzle 85 is composed of two pairs of rollers arranged at right angles, and the conductor is supplied to the bobbin through the gap between these rollers.

The nozzle 85 is provided so as to be relatively movable with respect to the bobbin 1 by an actuator (not shown), and reciprocates in the bobbin rotation axis direction. This reciprocating movement changes the direction of supply of the conductors and allows the conductors to transition from one row to the next. That is, in the present embodiment, the nozzle 85 and the nozzle driving mechanism (not shown) function as a column switching driving unit that causes the conductor to perform column switching.

Next, with reference to FIGS. 6 to 12, the operation of winding the conductor by the winding machine of the present embodiment will be described. Here, a case where the trapezoidal coil shown in FIG. 6 is manufactured will be described. However, it goes without saying that coils of other shapes can be similarly formed. Further, in the present embodiment, as illustrated, the coil is formed using a rectangular wire that is a conductive wire having a square cross section.

FIG. 7 shows the winding process of the first layer.
(A) First, the leading end of the conductor is clamped to one of the flanges at both ends of the bobbin 1. At this time, the guide claws BL, BR
Is located at the flange, i.e. at the end of the wire winding surface. The remaining guide claws FL and FR are the first
Although not shown in the drawing because it does not function when the layer is wound, these guide claws FL and FR are retracted to positions where they do not interfere with the conductor.

(B) Next, when the winding frame starts rotating, the conductive wire starts to wind. Immediately before the bobbin makes one rotation (when the bobbin rotates about 270 degrees), the guide claw BL moves in the direction of the rotational axis, abuts on the conductor wound around the bobbin in the rotational axis direction, and presses down the conductor. . At this time, the nozzle moves in the rotation axis direction. The direction of movement is from the first row to the second
It is the direction to the column.

FIG. 7C shows a state in which the winding frame 1 has just made one rotation. The nozzle has been moved to a large extent and then returned to the position corresponding to the second row. That is, the nozzle
It is shifted by one conductor from the state of (a). In this manner, the winding of the first row is completed, and the bobbin continues to rotate and moves to the winding process of the second row.

(D) and (e) are the winding steps for the second row. This is the same as the winding process of the first row shown in (b) and (c).

However, as shown in FIG. 8, the guide claws BL,
When the second-row conductors are sandwiched between BRs, the guide claws BL once move greatly. As a result, the gap between the two guide claws widens more than two conductors. Then the second row of wires is received between the two guide claws. Then, the gap between the guide claws is closed, and the two conductive wires are sandwiched between the two guide claws.

The operation of the guide claw prevents the conductive wire from being caught on the guide claw and rubbing against each other. As a result, damage to the conductor, particularly to the insulating coating, is prevented.

In the operation shown in FIG. 8, both the guide claws are closed after the conductor is received, and the coil being formed is restrained from both ends. Therefore, the shape of the coil is reliably held, and the accuracy of the shape of the coil is improved.

The same operation is performed when the remaining two guide claws (not shown in FIG. 7) sandwich the conductor.

Returning to FIG. 7, (f) shows the third column and the fourth column.
The row is wound in the same manner, so that the winding of the first layer is completed.

FIG. 9 shows a case where the guide claws of this embodiment are not applied. A large tension acts on the conductor with the rotation of the bobbin. When the direction of travel of the conductor is changed for a row change, the already wound conductor is dragged in the axial direction. As a result, the conductor may be shifted in the axial direction as shown in FIG. Each time the column is replaced, a displacement of the conductor occurs, and if this displacement is accumulated, the total displacement increases. Then, as shown in FIG. 9D, the winding of the last row may not be possible due to the displacement of the conductor.

On the other hand, in this embodiment, since the guide claws define the winding position of the conductor, the displacement of the conductor as shown in FIG. 9 can be suppressed. As a result, the number of rows in each layer can be secured, and the entire coil can be formed into an accurate shape.

Next, the step of winding the second layer will be described with reference to FIG. (A) First, the guide claws BL and BR are connected to the conductor 1
It is kept away from the rotation axis by this much. As described above, the operation of one actuator moves both guide claws away from the rotation axis by the same distance. In this state, the bobbin makes one rotation,
The winding of the first row of the second layer is performed.

In (b) and (c), the first column
The conductor moves to the row. The operation here is performed in the first layer (FIG. 9).
(B), (c)). Immediately before the winding frame makes one rotation (when it rotates about 270 degrees), the guide claw BR moves in the rotation axis direction and abuts on the conductor in the rotation axis direction to hold down the conductor. The nozzle moves largely in the direction of the axis of rotation and is then returned in the opposite direction. Then, the nozzles are arranged at positions corresponding to the second row. (C) is a state in which the bobbin 1 has made exactly one rotation from (a), and the line switching to the second line has been completed. A similar winding process is performed on the third and fourth rows, and the winding of the second row is completed (d).

Next, the step of winding the third layer will be described with reference to FIG. Here, the case of forming a trapezoidal coil is taken up. Therefore, the number of columns in the third layer is three,
The number of rows of the layer and the second layer is less than 4. To change the number of rows, the third layer is wound as follows.

(A) shows a state at the start of winding the third layer. Here, four guide claws BL, BR, F
L and FR function. All guide claws are located at the bobbin flange. All the guide claws are moved away from the rotation axis by one conductor with respect to the state where the winding of the second layer is completed. As described above, the operation of one actuator moves all the guide claws away from the rotation axis by the same distance. Also, the nozzle shifts in the direction of the rotation axis by about one conductor. As a result, the number of rows of the third layer becomes smaller than that of the second layer, and the coil becomes trapezoidal.

The winding frame is rotated from the state shown in (a), and the winding of the third layer starts. Although not shown in the drawing, when the winding frame is rotated by about 90 degrees, the guide claw FR moves in the direction of the rotation axis and comes into contact with the conductor.

(B) Further, when the winding frame is rotated by about 270 degrees, the guide claw BL moves in the direction of the rotation axis and comes into contact with the conductor. At this time, the nozzle is largely moved in the axial direction for switching to the second row.

(C) shows a state in which the winding frame has just made one rotation. As described above, during the winding of the first row, the guide claws F
R and BL have moved and are in contact with the conductor. The nozzle is largely moved in the axial direction and returned later, and is arranged at a position corresponding to the second row. As a result of the reciprocating movement of the nozzle, the second
Column replacement has been completed.

Here, as shown in (b) and (c), the guide pawl FR and the guide pawl BL are positioned such that the conducting wire is positioned at the first row of the third layer (directly above the third row of the second layer). The winding position of the conductive wire is defined so as to wind the wire. Guide claw FR
Is provided, a step corresponding to one conductive wire is reliably formed in the second layer and the third layer, whereby a trapezoidal coil having a correct shape is formed. That is, it is possible to prevent the first-row conductors from being displaced toward the reel end (the reel flange) to disturb the trapezoidal shape. In addition, the function of the guide claws BL effectively prevents the conductor from shifting in the column switching direction, as in the case of the other layers.

The winding of the second and third rows of the third layer is performed in the first row.
It is performed in the same manner as the layer. However, FIG.
The restrained state by the guide claw FR of (c) is maintained. As a result of such a winding operation, a trapezoidal coil is completed as shown in FIG.

FIG. 12 is a modified example of the step of winding the third layer. As shown in FIG. 12B, the guide claws BR are in axial contact with the third-layer first-row conductive wires. Guide claw B
R moves just before the winding frame makes one rotation (when it rotates about 270 degrees). The conducting wire is sandwiched between the guide claws BR and the guide claws BL. This ensures that the conductor is held in its winding position. Also, guide claws BR
And the guide claw FR supports the conducting wire from the reel end side. Therefore, the step of the trapezoidal coil (the step between the second layer and the third layer) is more reliably formed.

Further, in FIG. 12, the guide claw FL also moves in the axial direction and contacts the conductor. The guide claw FL and the guide claw FR restrain the coil being formed from both ends. The guide claw FL shifts in the rotation axis direction once for each rotation of the winding frame (retreats by one conductor). At this time, as described with reference to FIG. 8, a gap between the guide claws is opened when the conductor is received, and damage to the conductor caused by interference between the guide claws and the conductor is prevented.

In the winding operation shown in FIG. 12, the winding position of the conductor is defined by simultaneously using the four guide claws. Displacement of the conductor is more reliably prevented, and further stability of the shape of the completed coil is obtained.

The winding operation of the coil has been described above. Here, the case of making the trapezoidal coil of FIG. 5 has been described, but it goes without saying that the present winding machine has coils of other shapes. The number of layers and the number of rows of the coils may be different. Further, a coil in which the number of rows of each layer is arbitrarily set can be formed. Needless to say, a coil with a rectangular cross section can be made.

In this embodiment, the guide claws rotate synchronously with the winding frame. Therefore, the movement of the guide claws and the definition of the position of the conductive wire by the guide claws are performed while the rotation of the bobbin is continued.

Next, the operation of removing the completed coil from the bobbin will be described with reference to FIG. FIG. 13A shows the state of FIG.
As in 2 (d), the coil is completed.

First, as shown in FIG.
Separated into two. The bobbin is configured to be separable between the wire winding portion and the bobbin flange. Then, one bobbin flange is cut off from a winding part. At this time,
The two guide claws BR and BL are moved together with the reel flange.

Specifically, as shown in FIGS. 2 and 3, in this embodiment, the rotating shafts are mounted on both sides of the bobbin.
The rotating shaft is configured to be movable in the axial direction by an actuator (not shown). One rotating shaft moves in the axial direction together with the bobbin flange. As a result, the flange retracts and is separated from the wire winding portion.

Then, as shown in FIG. 13 (c), the guide claws BL and BR simultaneously move in the direction of the rotation axis to push the coil out of the bobbin. Preferably, as shown, the guide claws BL and BR push the coil at a position near the rotation axis. A wide range of the coil end surface can be pressed, and the coil can be prevented from being deformed.

As shown in FIG. 13D, when the coil is completely removed from the wire winding portion of the bobbin, the operator removes the coil. The coil may be removed by an automatic transfer device or the like.

As a modified example, the coil may be pulled out from the winding frame in the axial direction with both ends of the coil sandwiched between the four guide claws. As a result, it is possible to reliably prevent the coil from breaking down.

[Structure of Wire Clamping Apparatus] Next, with reference to FIGS. 14 and 15, a description will be given of an apparatus for automatically clamping the leading end of the wire to the bobbin at the start of winding.

FIG. 14 is a view of the bobbin 1 viewed from three directions, and shows the bobbin 1 in an enlarged manner. (C) is a diagram in which the bobbin 1 is cut along the line AA in (a). Reel 1
It has a winding part 100 around which a conductive wire is wound. The winding unit 100 has a shape corresponding to a coil to be formed,
That is, it has substantially the same shape as the magnetic pole of the motor to which the coil is mounted.

Further, the bobbin 1 has bobbin flanges 102 and 104 on both sides of the winding portion 100. Reel flange 1
Numerals 02 and 104 are for supporting the end face of the coil being formed to prevent the coil from breaking. Reel flange 10
2 and 104 are cut out to prevent interference with a guide claw that defines the winding position of the conductive wire, and an escape portion 106 is formed. The four guide claws pass through the escape portion 106 and come into contact with the conductive wire wound around the winding portion 100.

A guide groove 108 for guiding the leading end of the conductive wire to the clamp position B is provided on one of the winding frame flanges 102. As shown in FIG.
Starts near one of the four vertices of the wrapper 100. Then, the guide groove 108 advances along one side of the winding portion 100 and continues to the clamp position B at the upper end of the flange. The guide groove 108 gradually becomes deeper from the starting point to the clamp position B.

Further, as shown in FIG. 14C, a clamp claw 110 is provided at the upper end of the flange 102 so as to be movable along the flange end. The tip of the clamp claw 110 is located at the clamp position B (the exit of the guide groove 108). As shown, the tip of the clamp claw 110 forms a wedge-shaped gap with the end of the flange. This is because, as described later, when the clamp claw 110 presses the conductor protruding from the guide groove 108, the conductor is bent in the pressing direction.

One end of a coil type clamp spring (return spring) 112 is attached to the clamp claw 110. The other end of the spring 112 is attached to a spring support arm 114 that is bolted to the flange 102. The clamp spring 112 is
In the direction of the clamp position B (the exit of the guide groove 108).

The clamp claw 110 has a clamp spring 11
A release rod 116 is attached to the opposite side of the two.
The release rod 116 is provided coaxially with the clamp spring 112 and extends parallel to the upper end of the flange. Release rod 116
Are supported by a rod support arm 118. The rod support arm 118 is fixed to the flange end face on the side opposite to the arm 114 that supports the clamp spring 112 with a bolt. The release rod 116 is inserted into a through hole of the support arm 118, and can move freely in this through hole. The stopper projection 117 of the release rod 116 is
It hits the wall surface of the support arm 118. The movable range of the release rod 116 is defined by the stopper protrusion 117.

The clamp release actuator 120 is fixed to an apparatus base (not shown). The actuator 120 can push and move the clamp release rod 116. When the push arm 122 of the actuator 120 moves rightward and pushes the rod 116, the resistance of the spring 112 is overcome and the clamp claw 110 is pressed.
Moves away from the clamp position B. When the actuator 120 returns the push arm 122, the clamp pawl 1
10 is pushed by the clamp spring 112 and returns to the original clamp position B.

Further, as shown in FIG. 14A, an introduction actuator 124 is provided near the bobbin 1. The introduction actuator 124 has an introduction arm 126 that can move in the axial direction of the bobbin. Actuator 12
4 moves the leading arm 126 forward and backward, thereby causing the leading end of the conductive wire supplied from a nozzle (not shown) to move to the guiding groove 10.
Lead to 8.

Next, the operation of the clamp device will be described with reference to FIG.

(A) First, the clamp release actuator 1
20 moves the push arm 122 to push the release rod 116. The clamp claw 110 moves by overcoming the resistance of the clamp spring 112, and the outlet of the guide groove 108 is opened.

(B) Next, the wire is fed out from the nozzle, and the induction actuator 124 is
Is moved toward the flange 102. As a result, the leading end of the conductive wire enters the guide groove 108 and advances through the guide groove 108.
Since the wire is pushed by the introduction arm 126, it travels along the bottom of the guide groove 108. The wire is supplied from the nozzle until the tip of the wire protrudes from the outlet of the guide groove 108 by a predetermined length.

(C) Next, the clamp release actuator 120 moves the push arm 122 backward. Rod 1
The clamp 16 and the clamp pawl 110 are pushed by the clamp spring 112 and follow the arm 122. When the protrusion 117 of the rod 116 hits the support arm 118, the rod 116 stops. The arm 122 retracts to a position away from the rod 116.

When the clamp claw 110 is pushed by the spring 112 and moves, it bends the leading end of the conductor protruding from the guide groove 108 and presses the bent portion against the flange 102. The conducting wire is clamped to the bobbin by the clamp claw 110 at this bent portion.

As described above, the conductor is automatically clamped. Thereafter, the winding frame is rotated, and the wire is wound. When the winding of the coil is completed, the clamp release actuator 120 operates again to move the clamp claw 110. As a result, the clamped state is released, so that the coil can be removed from the bobbin.

In the present embodiment, the leading end of the conductor is clamped in a state of being bent in a direction along the end of the flange. That is, the conducting wire is clamped in a state of being bent in the winding frame rotation direction. Therefore, the tip can be reliably clamped as described below.

When the conductor is wound, a large tension acts on the conductor, and the conductor is about to be removed from the winding frame. However, since the conductor is held in a state of being bent in the winding frame rotation direction,
It is possible to effectively counter the tension acting on the conductor. Thereby, the clamped state can be reliably maintained.

Incidentally, regarding the configuration for this clamp,
The winding frame rotation direction means a direction around the winding frame rotation axis, and means both clockwise and counterclockwise directions.
In other words, the direction of rotation of the bobbin includes both the direction in which the bobbin actually rotates to form the coil and the opposite direction.
The direction in which the leading end of the conductive wire is bent for clamping may be either direction.

More specifically, in the example shown in FIG. 14C, the bobbin rotates clockwise during coil formation. The clamp pawl bends the wire in a counterclockwise direction. As a variant, the clamp pawl may bend the wire in a clockwise direction, ie in the same direction as the rotation of the bobbin. In this case, the clamp claws are located on the opposite side of the introduction groove, and other configurations are provided symmetrically.

The preferred winding machine of the present embodiment has been described above. Next, various advantages of the winding machine of the present embodiment will be described.

In the present embodiment, the guide claws rotate synchronously with the winding frame. Then, the guide claw can be moved while the rotation of the bobbin is continued. It is not necessary to stop the bobbin every time a row change operation is performed and to move the guide claws while the bobbin is stopped, thus improving productivity. Further, since the guide wire can be kept pressed by the guide claw even during the rotation of the winding frame, the accuracy of the shape of the coil is improved, and the productivity can be improved in this respect as well.

In particular, according to the present embodiment, as shown in FIG. 4, the link mechanism for supporting the guide claws has the same configuration as the umbrella frame. The third actuator 21 may move the drive link 13 in the direction of the rotation axis in order to move the guide claw away from or close to the rotation axis of the winding frame. In this case, the third actuator 21 can perform its function without rotating with the bobbin. Therefore, the third actuator 21 is fixed to the guide table 42, that is, provided so as not to rotate with the reel.
As described above, since the number of actuators to be mounted on the rotating portion can be reduced, the structure of the device is simple. Further, since the weight of the rotating portion can be reduced, the burden on the winding frame rotating motor is light and the motor can be downsized.

In this embodiment, the link mechanism for holding the guide pawl is constituted by the holding link, the driving link and the conversion link shown in FIG. The desired movement of the guide claw can be achieved with a small number of link members, and the configuration is simple.

Further, in this embodiment, as shown in FIG. 4, the cylindrical portion of the drive link is inserted into the cylindrical portion of the holding link, and the bobbin rotating shaft is inserted into the cylindrical portion of the drive link. Therefore, the configuration of the device is simple, and the size of the device can be reduced. In addition, it is also possible to arrange | position so that the cylinder of a holding link may be arrange | positioned inside a drive cylinder, and the same advantage is acquired.

In this embodiment, as shown in FIG. 4, when the first actuator 17 moves the holding link 11 in the rotation axis direction, the guide claw moves in the rotation axis direction. Also here, the first actuator 17 can perform its function without rotating with the bobbin, and is therefore fixed to the device base. Therefore, since the actuator need not be mounted on the rotation mechanism, the configuration of the apparatus is simple, and the load on the reel rotating motor can be reduced.

In this embodiment, as shown in FIG. 3, the number of motors for moving the guide pawls on the right and left sides of the winding frame in the radial direction of the winding frame is one. The pawls on both sides do not have to be moved by separate actuators. Therefore, the number of actuators can be reduced.

In this embodiment, as shown in FIGS. 2 and 3, the guide claws on both sides of the rotary shaft are independently movable in the direction of the rotary shaft. This movement is realized by a rotating disk 60 that is a part of the link mechanism and an actuator 19 that moves the disk 60 while sliding on the disk 60, and the actuator 19 is fixed to the apparatus table. Also in this case, since the actuator need not be mounted on the rotation mechanism, the configuration of the apparatus is simple, and the load on the reel rotating motor can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a winding machine according to a first embodiment of the present invention.

FIG. 2 is a front view of the winding machine of FIG. 1;

FIG. 3 is a plan view of the winding machine of FIG. 1;

FIG. 4 is a view showing a mechanism of the winding machine of FIG. 1;

FIG. 5 is a schematic view showing a nozzle for supplying a conductor to the winding machine of FIG. 1;

FIG. 6 is a diagram illustrating an example of a coil formed by using the winding machine of FIG. 1;

FIG. 7 is a view showing a process of winding a first layer of the coil of FIG. 6;

FIG. 8 is a diagram illustrating an operation when a guide claw sandwiches a conductive wire in a winding process of a coil.

FIG. 9 is a diagram showing a winding process when a guide claw is not used.

FIG. 10 is a view showing a winding process of a second layer.

FIG. 11 is a diagram showing a winding process of a third layer.

FIG. 12 is a diagram showing a modification of the winding process of the third layer.

FIG. 13 is a diagram showing a process of removing a completed coil from a bobbin.

FIG. 14 is a view showing an apparatus for automatically clamping the leading end of a conductive wire to a bobbin.

FIG. 15 is a view showing the operation of the clamp device of FIG.

[Explanation of symbols]

Reference Signs List 1 reel, 3 rotating shaft, 5 motor, 7 and 8 guide member, 8a arm, 9 guide holding link mechanism, 11 holding link, 11a first cylinder, 13 drive link, 13
a second cylinder, 15 conversion links, 17 first actuator, 19 second actuator, 19a fork,
21 third actuator, 23 control unit, 30 device base, 42 guide table, 44 rail, 46a,
46b motor, 48 guide holding base, 50 holding ring, 54, 56 guide claw arm, 60 disk, 62
Driving cylinder support, 64 rails, 66 driving cylinder, 68
Motor, 70 first shaft, 72 ball screw mechanism, 76 second shaft, 80, 82 gear, 85 nozzle, 100 winding part, 102, 104 reel flange, 106 relief part, 108 guide groove, 110 clamp claw, 112 Clamp spring, 116 release rod, 12
0 Clamp release actuator, 122 push arm, 124 introduction actuator, 126 introduction arm, BL, BR, FL, FR guide claws.

Claims (8)

[Claims] 1. A winding machine for forming a coil by winding a conducting wire around a rotating bobbin, a guide member abutting on the conducting wire wound around the bobbin and defining a winding position of the conducting wire; A guide holding link mechanism that is provided so as to rotate synchronously with the winding frame coaxially with a rotation axis and holds the guide member; and the guide holding link mechanism without rotating together with the winding frame and the guide holding link mechanism. A link driving means for moving the constituent element members in the direction of the rotation axis of the bobbin; and the guide holding link mechanism controls the movement of the guide member in the direction of the rotation axis of the bobbin provided by the link driving means. A winding machine characterized in that it is set so as to convert to movement in the frame radial direction. 2. The winding machine according to claim 1, wherein the guide holding link mechanism includes: a holding link that holds the guide member so as to be slidable in a winding frame radial direction; A drive link that relatively moves in the axial direction, and the drive link and the guide member are connected, and the movement of the drive link in the bobbin rotation axis direction is converted into the bobbin radial direction movement of the guide member on the holding link. A winding machine, comprising: a conversion link; 3. The winding machine according to claim 2, wherein the holding link has a first cylinder coaxial with a bobbin rotation axis, and the driving link is a second cylinder coaxial with the bobbin rotation axis. And the link driving means moves the second cylinder relatively to the first cylinder. 4. The winding machine according to claim 1, further comprising: rotating the guide holding link mechanism with respect to the winding frame without rotating together with the winding frame and the guide holding link mechanism. A winding machine, comprising: a driving unit that moves the guide member in the rotation axis direction by moving in the rotation axis direction. 5. The winding machine according to claim 1, wherein the guide member and the guide holding link mechanism are provided on both sides of the winding frame. A winding machine characterized in that one link driving means is provided so as to be able to drive them. 6. The winding machine according to claim 2, wherein a pair of guide members is held by the holding link on both sides of the winding frame rotating shaft, and further, the winding frame and the guide A winding machine provided with a driving means for moving one of the pair of guide members relative to the holding link in the direction of the reel rotation axis without rotating together with the holding link mechanism. 7. The winding machine according to claim 6, wherein the driving means applies a force in the direction of the bobbin rotation axis to the guide member while slidingly contacting the guide member rotating around the bobbin rotation axis. A winding machine characterized by being provided so as to perform. 8. A winding machine for forming a coil by winding a conductive wire around a rotating bobbin, wherein a device base rotatably supports the bobbin, and slidable on the device base in a bobbin rotation axis direction. A guide table mounted on the guide table, and a guide holding link mechanism provided coaxially with the winding frame rotation axis and provided to rotate synchronously with the winding frame; A guide member that comes into contact with a conductor wound around the frame and defines a winding position of the conductor, and is mounted on the guide table or the device base;
A link driving means for moving a member constituting the guide holding link mechanism in the direction of the reel rotation axis, and wherein the guide holding link mechanism moves in the direction of the reel rotation axis given by the link driving means, A winding machine characterized in that the guide member is set so as to convert the movement of the guide member in the radial direction of the winding frame.