JP3555510B2 - Winding machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a winding machine that forms a coil by winding a conducting wire around a rotating bobbin, and more particularly, to an apparatus that can reliably define a winding position of a conducting wire.
[0002]
[Prior art]
In a rotating electric machine such as a motor or a generator, the number of windings of a coil is increased in order to increase output. However, simply increasing the number of windings leads to 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, that is, to arrange conductors without gaps, has been developed a coil forming method and a coil forming apparatus for aligning and winding conductors. Japanese Patent Application Laid-Open No. 7-183152 discloses such an apparatus.
[0003]
Further, 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. By using a rectangular conductor, a gap between the conductors can be further reduced as compared with using a conductor having a circular cross section.
[0004]
In such coil forming, the conductors are wound around a magnetic pole of a rotating electric machine or a winding frame (core metal) having a shape corresponding to the conductors one line at a time without leaving a gap with an adjacent conductor, and when the entire length of the coil is finished. , And the layers above it are similarly wound to form a predetermined number of layers.
[0005]
[Problems to be solved by the invention]
In the above-described winding of the coil-formed conductor, if the displacement of the conductor occurs during column switching in which the winding of the conductor is shifted from one row to the next row, the shape accuracy of the coil is reduced. 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 shifted 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, the conducting wire is press-formed before being wound on the bobbin, so that the S-shape of the row changing portion is formed.
[0007]
In the above apparatus, the press forming unit includes a press jig having a shape corresponding to the coil replacement part. When manufacturing multiple types of coils with one apparatus, it is necessary to prepare a press jig for each type of coil and replace the jig according to the type of coil. Also, when making one coil, it may be necessary to exchange jigs according to the shape of the row changing section. However, it is desirable that the coil can be easily manufactured without performing an operation such as jig replacement, which is considered to contribute to improvement in productivity.
[0008]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a winding machine that does not require jig replacement for preventing a winding position of a conductive wire from being shifted and that can improve productivity. is there.
[0009]
Another object of the present invention is to make it possible to more reliably perform the interlocking operation when the line displacement prevention mechanism operates in conjunction with the rotation of the bobbin, thereby contributing to further improvement in productivity. Is to do.
[0010]
[Means for Solving the Problems]
(1) In order to achieve the above object, the present invention relates to a winding machine for forming a coil by winding a wire while aligning a conductive wire around a rectangular winding portion of a winding frame, wherein the winding of the coil wound around the winding frame is performed . Guide means for abutting the conductor at the layer performing the operation , defining the winding position of the conductor, and rotating the conductor synchronously with the winding frame to adjust the shape of the column changing portion where the conductor moves from one row to the next. Is provided. The guide means includes a first guide member and a second guide member that are in contact with the conductor from both sides in the column replacement direction on the front side in the traveling direction of the wire with respect to the column replacement portion; A third guide member and a fourth guide member that come into contact with the conductor from both sides in the column changing direction on the rear side in the traveling direction of the conductor, wherein the first guide member, the second guide member, The third guide member and the fourth guide member are provided so as to be independently movable in the direction of the reel rotation axis and to move simultaneously in the radial direction of the reel .
[0011]
According to the present invention, the winding position of the conductor is defined by the four guide members that abut on the conductor from both sides before and after the row change, thereby preventing displacement of the conductor. Since the four guide members can be driven independently, the winding position of the conductive wire can be defined using these guide members even when the shape of the row changing portion is different. Since there is no need to replace guide members, productivity can be improved.
[0012]
In the present invention, not all of the four guide members need to simultaneously contact the conductor. If necessary, the guide members may be driven so that some of the guide members abut on the conductor and the other guide members are retracted without contacting the conductor.
[0013]
Preferably, the winding machine includes a row change driving means for changing the supply direction of the wires when the wires to be wound around the row changing section are supplied to the bobbin, thereby changing the rows of the wires. The guide member of the guide means prevents a displacement of the conductive wire on the bobbin when the supply direction of the conductive wire is changed by the row switching drive means. According to this aspect, when the row changing drive unit causes the wires to change rows by changing the supply direction of the wires, the guide member prevents the wires from shifting. Thereby, the shape of the row changing part is stabilized, and the shape accuracy of the coil can be improved.
[0014]
Also preferably, the first guide member and the second guide member, or the third guide member and the fourth guide member, when a conductive wire is supplied to the row switching unit, between the guide members Widen the gap and accept the conductor in this gap. According to this aspect, since the conductor is received with the gap between the guide members widened, damage to the conductor due to contact between the conductor and the guide member, particularly damage to the insulating coating, is avoided.
[0015]
Also preferably, the first guide member and the second guide member, or the third guide member and the fourth guide member, are configured such that both ends of the coil in the axial direction are provided after the supply of the lead wire to the row switching unit. The wire is pinched and restrained to prevent displacement of the conductor. By restraining the coil from both ends, displacement of the conductive wire is reliably prevented, and the shape of the coil is stabilized.
[0016]
Also preferably, when the winding is completed, at least one guide member moves the coil in the direction of the bobbin rotation axis to remove the coil from the bobbin. According to this aspect, the coil is removed from the bobbin by the guide member. Since the number of manual operations for removing the coil is reduced, the coil manufacturing operation is easy. Then, the coil can be removed from the bobbin without providing a dedicated actuator, and the device can be configured simply.
[0017]
(2) In a preferred aspect of the present invention, the following configuration is provided so that the guide member operates reliably in association with the rotation of the bobbin. That is, in one embodiment of the present invention, two of the four guide members, which are arranged before and after in the lead wire traveling direction with the row changing portion interposed therebetween, mechanically use the rotational force of the reel. By doing so, they are driven independently of each other by mechanical element means interlocked with the reel rotating operation.
[0018]
Preferably, the mechanical element means includes a cam defining an operation required of the guide member, and a cam follower driven by the cam. Preferably, the cam is provided on a rotating member that rotates with the reel, the cam follower does not rotate with the reel, a cam surface of the cam surrounds a reel rotating shaft, and the two guide members One of the guide members is attached to the rotating member.
[0019]
As described above, according to the present invention, a means such as a cam that mechanically utilizes the rotational force of the bobbin is used to independently drive the two guide members that straddle the row changing unit. Therefore, both the bobbin and the guide member are driven by using the bobbin actuator. Accordingly, the operation of the guide member synchronized with the rotation of the bobbin, that is, the interlocking operation of the two is reliably performed.
[0020]
Here, it is also conceivable that the guide member is directly driven by using an actuator different from the actuator for the bobbin without applying the present invention. However, when trying to increase the rotation speed of the bobbin, it is difficult for the guide member actuator to follow the bobbin rotation. On the other hand, according to the present invention, since the bobbin and the guide member are interlocked using the mechanical transmission means, even when the bobbin is rotated relatively quickly, the operation of the guide member is delayed with respect to the bobbin rotation operation. Therefore, the cooperative operation between the bobbin and the guide member is ensured.
[0021]
Further, if an actuator other than the winding frame actuator is provided as described above, interlocking control of these actuators is required. According to the present invention, there is also obtained an advantage that such an interlocking control becomes unnecessary.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
<First embodiment. >
Hereinafter, preferred embodiments of the present invention (hereinafter, referred to as embodiments) will be described with reference to the drawings.
[0023]
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.
[0024]
First, the mechanism of the winding machine will be described with reference to FIG. Since the winding machine is symmetrical, only the right half will be described here. 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.
[0025]
Guide members 7 and 8 are provided near the winding frame 1 and on both sides of the rotating shaft 3. These guide members are in contact with the conductor wound around the winding frame 1 and define the winding position of the conductor to prevent the conductor from shifting.
[0026]
The guide members 7 and 8 are held by the 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 further, the link mechanism controls the movement of the link element in the rotating shaft direction in the radial direction of the winding frame of the guide member. It is set to convert to movement.
[0027]
The link mechanism 9 has a holding link 11, a driving link 13, and a conversion link 15. The holding link 11 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.
[0028]
The drive link 13 is constituted by a second cylinder 13 a provided so as to rotate synchronously coaxially with the rotation shaft 3. The rotating shaft 3, the first cylinder 11a, and the second cylinder 13a are mutually restricted in the rotation direction, but are not restricted in the axial direction. Therefore, the rotating shaft 3, the holding link 11, and the driving link 13 relatively move in the axial direction.
[0029]
The conversion link 15 connects the radiating portion 11 b 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.
[0030]
Further, the guide member 8 is held by the holding link 11 via an arm 8a that can be extended and contracted in the direction of the reel rotation axis.
[0031]
Next, the operation of the link mechanism of 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, 8 move in the rotating shaft direction with respect to the bobbin 1.
[0032]
The second actuator 19 changes the length of the telescopic arm 8a. Thereby, the guide member 8 can move relative to the holding link 11 in the rotation axis direction, and can be located at a position different from the guide member 7 in the axial direction.
[0033]
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.
[0034]
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 winding frame 1 from the state of FIG. Then, the guide members 7 and 8 are drawn to the rotating shaft 3. When the drive link 13 moves away from the winding frame 1, the guide members 7 and 8 move away from the rotating shaft 3. The same principle as the umbrella framework is applied.
[0035]
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 configuration 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 with respect to the bobbin 1.
[0036]
In the present embodiment, the actuators 17, 19, and 21 that move the link mechanism move the driven member only in the bobbin rotation axis direction. 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.
[0037]
The left and right drive links 13 are moved by one actuator 21. Further, the control unit 23 operates the reel rotating motor 5, the actuators 17, 19, and 21 and other actuators in cooperation with each other. The control unit 23 sends a control signal to each actuator based on a signal from a sensor provided in the winding machine.
[0038]
Next, a specific configuration of the winding machine will be described with reference to FIGS.
[0039]
A bobbin support 32 is installed at both ends of the device base 30, and the bobbin 1 and the rotating shaft 3 are supported by the support 32. A drive belt 36 is hung on pulleys 34 at both ends of the rotating shaft 3, and the drive belt 36 is also hung on a pulley 40 of a drive shaft 38 below the device base 30. The drive shaft 38 is belt-driven by the reel rotation motor 5, whereby the reel 1 is rotated.
[0040]
A guide table 42 is mounted on the device base 30. 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. The motors 46a and 46b correspond to the first actuator 17 in FIG.
[0041]
A guide holder 48 is fixed to the guide table 42. The guide holder 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 axially restrained by the guide holding base 48. The holding ring 50 corresponds to the holding link shown in FIG.
[0042]
The holding ring 50 holds guide claw arms 54 and 56, and a guide claw is provided at a tip 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.
[0043]
Further, one guide claw arm 56 is capable of extending and contracting in the axial direction, and corresponds to the telescopic 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.
[0044]
The disk 60 is held by the holding ring 50 and rotates coaxially with the reel 1. The disk 60 is also attached to the holding ring 50 by an extendable arm 61. Further, a portion on the distal end side of the arm 56 is fixed to the disk 60 in the axial direction, but is provided movably in the radial direction.
[0045]
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.
[0046]
The drive cylinder support 62 pivotally supports the drive cylinder 66. The drive cylinder 66 is provided coaxially with the rotation shaft 3. The drive cylinder 66 is constrained in the rotation direction with respect to the rotation shaft 3, and both rotate synchronously. The drive cylinder 66 corresponds to the drive link described with reference to FIG. The drive cylinder 66 is connected to the retaining ring 50 via the conversion link 15.
[0047]
As described above, the winding machine shown in FIGS. 2 and 3 includes the mechanism described with reference to FIG. Accordingly, the winding machine operates as described with reference to FIG. 4, and each guide claw can move in the radial direction and the axial direction with respect to the bobbin 1.
[0048]
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.
[0049]
The motor 68 rotates a first shaft 70 provided in parallel with the bobbin rotation axis. The first shaft 70 meshes with the drive cylinder support 62 to form a ball screw mechanism 72. The support 62 has an inverted T-shape, and engages with the first shaft 70 at a leg portion extending in a direction perpendicular to the rotation axis.
[0050]
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.
[0051]
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. Similarly to the first shaft 70, the second shaft 76 is engaged with the driving cylindrical support to form a ball screw mechanism.
[0052]
A gear 80 attached to the first shaft 70 and a 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. Thus, shafts 70 and 76 can move axially relative to gears 80 and 82, respectively.
[0053]
When the motor 68 rotates the first shaft 70, the second shaft 76 rotates by the same amount via the gears. Then, the ball screw mechanism functions simultaneously 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.
[0054]
Since the first shaft 70 and the second shaft 76 rotate the same amount in opposite directions, the drive cylinders on both sides move the same amount in opposite directions (in the same direction relative to the bobbin) on the device base. That is, both drive cylinders approach the bobbin at the same time or move away from the bobbin.
[0055]
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.
[0056]
Thus, in the present embodiment, the drive cylinders 66 on both sides are always simultaneously moved by the same amount by one actuator 68. Accordingly, the four guide claws can be simultaneously moved in the radial 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, thereby guiding 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.
[0057]
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 winding frame 1. These guide claws correspond to the four guide claws described above. The conducting wire is supplied from a nozzle 85 installed near the bobbin 1. As shown, the nozzle 85 is constituted by two pairs of rollers arranged at right angles to each other, and the wire is supplied to the bobbin through the gap between these rollers.
[0058]
Here, 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 reciprocal 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.
[0059]
Next, with reference to FIGS. 6 to 12, an operation of conducting wire winding 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.
[0060]
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 and BR are located at the flange, that is, at the end of the wire winding surface. The remaining guide claws FL and FR do not function when the first layer is wound, and are omitted from the drawing, but these guide claws FL and FR are retracted to a position where they do not interfere with the conductor.
[0061]
(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 moving direction is a direction from the first row to the second row.
[0062]
(C) is a state where the winding frame 1 has just made one rotation. After the nozzle has moved once, it has returned to the position corresponding to the second row. That is, the nozzle is shifted from the state of (a) by one conductor. In this way, the winding of the first row is completed, and the bobbin continues to rotate and moves to the winding process of the second row.
[0063]
(D) and (e) are the winding steps of the second row. This is the same as the winding process of the first row shown in (b) and (c).
[0064]
However, as shown in FIG. 8, when the second-row conductive wires are sandwiched between the guide claws BL and BR, 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 leads is received between the two guide claws. Then, the gap between the guide claws is closed, and the two conducting wires are sandwiched between the two guide claws.
[0065]
Such an 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 damage to the insulating coating, is prevented.
[0066]
In the operation shown in FIG. 8, both 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.
[0067]
Note that the same operation is performed similarly when the remaining two guide claws (not shown in FIG. 7) sandwich the conducting wire.
[0068]
Returning to FIG. 7, (f) shows a state in which the winding of the first layer has been completed as a result of the same winding of the third and fourth rows.
[0069]
FIG. 9 shows a case where the guide claws of the present embodiment are not applied. A large tension acts on the conductor as the winding frame rotates. Then, when changing the direction of travel of the conductors for changing rows, the already wound conductors are dragged in the axial direction. As a result, the conductor may be displaced in the axial direction as shown in FIG. Each time a row 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.
[0070]
On the other hand, in the present embodiment, the guide claw defines the winding position of the conductor, so that the displacement of the conductor as shown in FIG. 9 is suppressed. As a result, the number of rows in each layer can be secured, and the entire coil can be formed in an accurate shape.
[0071]
Next, the winding process of the second layer will be described with reference to FIG. (A) First, the guide claws BL, BR are moved away from the rotation axis by one conductor. 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 winding frame makes one rotation, and the first row of the second layer is wound.
[0072]
In (b) and (c), the conductor moves from the first row to the second row. The operation here is symmetrical with the first layer (FIGS. 9B and 9C). Immediately before the winding frame makes one rotation (when it rotates about 270 degrees), the guide claw BR moves in the direction of the rotation axis and abuts on the conductor in the direction of the rotation axis to press 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 just rotated one turn from (a), and the line switching to the second column 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).
[0073]
Next, the winding step of the third layer will be described with reference to FIG. Here, a case where a trapezoidal coil is formed is taken up. Therefore, the number of columns in the third layer is three, which is smaller than the number of columns in the first layer and the second layer. To change the number of rows, the third layer is wound as follows.
[0074]
(A) has shown the state at the time of starting winding of a 3rd layer. Here, four guide claws BL, BR, FL, 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.
[0075]
From the state of (a), the winding frame rotates, 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.
[0076]
(B) Further, when the bobbin is rotated by about 270 degrees, the guide claw BL moves in the rotation axis direction 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.
[0077]
(C) is a state where the winding frame has just made one rotation. As described above, during the winding of the first row, the guide claws FR and BL move and come into 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 row switching to the second row has been completed.
[0078]
Here, as shown in (b) and (c), in the guide claws FR and the guide claws BL, the conductor is wound around the position of the first row of the third layer (immediately above the third row of the second layer). Thus, the winding position of the conductor is defined. By providing the guide claws FR, a step corresponding to one conductive wire is reliably formed in the second layer and the third layer, thereby forming a trapezoidal coil having an accurate shape. 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 wires from shifting in the column switching direction, as in the case of the other layers.
[0079]
The winding of the second and third rows of the third layer is performed in the same manner as in the first layer. However, the restrained state by the guide claws FR of FIGS. 11B and 11C is maintained. As a result of such a winding operation, a trapezoidal coil is completed as shown in FIG.
[0080]
FIG. 12 shows a modification of the third layer winding step. As shown in FIG. 12B, the guide claws BR are in axial contact with the third-layer first-row conductors. The guide claw BR moves immediately 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. Further, the guide claws BR and the guide claws FR support the conductor from the end of the bobbin. Therefore, the step of the trapezoidal coil (the step between the second layer and the third layer) is more reliably formed.
[0081]
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.
[0082]
In the winding operation of FIG. 12, the winding position of the conductor is defined by using four guide claws simultaneously. Displacement of the conductor is more reliably prevented, and further stability of the shape of the completed coil is obtained.
[0083]
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 a coil of another shape. 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.
[0084]
In this embodiment, the guide claw rotates 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.
[0085]
Next, an operation of removing the completed coil from the bobbin will be described with reference to FIG. FIG. 13A is similar to FIG. 12D, and shows a state in which the coil is completed.
[0086]
First, as shown in FIG. 13B, the bobbin 1 is cut into two. The winding frame is configured to be separable between the wire winding portion and the winding frame flange. Then, one bobbin flange is cut off from the winding portion. At this time, the two guide claws BR and BL are moved together with the reel flange.
[0087]
Specifically, as shown in FIGS. 2 and 3, in the present embodiment, the rotating shafts are attached to 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.
[0088]
Then, as shown in FIG. 13 (c), the guide claws BL and BR are simultaneously moved in the direction of the rotation axis to push the coil out of the bobbin. Preferably, as shown, the guide claws BL, 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.
[0089]
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.
[0090]
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 by four guide claws. As a result, it is possible to reliably prevent the coil from being deformed.
[0091]
"Construction of wire clamp device"
Next, with reference to FIGS. 14 and 15, a description will be given of an apparatus for automatically clamping the leading end of a conductive wire to a bobbin at the start of winding.
[0092]
FIG. 14 is a view of the bobbin 1 viewed from three directions, and shows the bobbin 1 in an enlarged manner. (C) is the figure which cut | disconnected the winding frame 1 in the line AA of (a). The winding frame 1 has a winding portion 100 around which a conductive wire is wound. The winding portion 100 has a shape corresponding to the coil to be formed, that is, has a shape substantially equivalent to the magnetic pole of the motor to which the coil is mounted.
[0093]
Further, the bobbin 1 has bobbin flanges 102 and 104 on both sides of the winding portion 100. The winding frame flanges 102 and 104 are for supporting the end surface of the coil being formed to prevent the coil from being out of shape. The winding frame flanges 102 and 104 are notched in order to avoid 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 abut on a conductive wire wound around the winding portion 100.
[0094]
One of the winding frame flanges 102 is provided with a guide groove 108 for guiding the leading end of the conductive wire to the clamp position B. As shown in FIG. 14C, the guide groove 108 starts near one of the four vertices of the winding portion 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.
[0095]
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 in the figure, the tip of the clamp claw 110 forms a wedge-shaped gap with the end of the flange. This is because, as will be described later, when the clamp claw 110 presses the conductor protruding from the guide groove 108, the conductor is bent in the pressing direction.
[0096]
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 fixed to the flange 102 with a bolt. The clamp spring 112 urges the clamp claw 110 in the direction of the clamp position B (the exit of the guide groove 108).
[0097]
A release rod 116 is attached to the clamp claw 110 on the opposite side of the clamp spring 112. The release rod 116 is provided coaxially with the clamp spring 112 and extends in parallel with the upper end of the flange. The release rod 116 is supported by a rod support arm 118. The rod support arm 118 is fixed to the flange end face 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. Further, the stopper convex portion 117 of the release rod 116 contacts the wall surface of the support arm 118. The movable range of the release rod 116 is defined by the stopper protrusion 117.
[0098]
The clamp release actuator 120 is fixed to a device 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 clamp claw 110 moves to overcome the resistance of the spring 112 and moves away from the clamp position B. When the actuator 120 returns the push arm 122, the clamp pawl 110 is pushed by the clamp spring 112 and returns to the original clamp position B.
[0099]
Further, as shown in FIG. 14A, an introduction actuator 124 is provided near the winding frame 1. The introduction actuator 124 has an introduction arm 126 that is movable in the axial direction of the bobbin. The actuator 124 guides the leading end of the wire supplied from a nozzle (not shown) to the guide groove 108 by moving the introduction arm 126 forward and backward.
[0100]
Next, the operation of the clamp device will be described with reference to FIG.
[0101]
(A) First, the clamp release actuator 120 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.
[0102]
(B) Next, the wire is paid out from the nozzle, and the induction actuator 124 moves the introduction arm 126 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, the wire advances 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.
[0103]
(C) Next, the clamp release actuator 120 moves the push arm 122 backward. The rod 116 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.
[0104]
When the clamp claw 110 is moved by being pushed by the spring 112, the clamp claw 110 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.
[0105]
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.
[0106]
In the present embodiment, the leading end of the conductive wire 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.
[0107]
When winding a conductive wire, a large tension acts on the conductive wire and tends to remove the conductive wire from the bobbin. 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.
[0108]
In the configuration for the 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 lead wire is bent for clamping may be either direction.
[0109]
Specifically, in the example of FIG. 14 (c), 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.
[0110]
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.
[0111]
In the present embodiment, the guide claws FL and FR shown in FIG. 11 correspond to the first guide member and the second guide member of the present invention, and are provided on the front side in the traveling direction of the conductor with respect to the row changing portion. , Abut on the conductor from both sides in the column changing direction. Further, the guide claws BL and BR correspond to the third guide member and the fourth guide member of the present invention. Abut
[0112]
These four guide claws are supported by the conductor from both sides before and after the row change. These guide claws define the winding position of the conductive wire, thereby preventing the conductive wire from being displaced and adjusting the shape of the row changing portion.
[0113]
In particular, these four guide claws are held by the link mechanism shown in FIG. 4 and are independently movable in the direction of the rotation axis. Therefore, it is possible to cope with various types of column changing sections having different shapes.
[0114]
For example, when manufacturing the coil of FIG. 5, the first and second layers of the coil are arranged in the opposite direction. In addition, as shown in FIG. 11, the shape of the column changing portion is different in the trapezoidal step portion from the other portions. This is because column switching is performed simultaneously with the transition from the second layer to the third layer. In the present embodiment, such a plurality of types of row changing portions can be formed by the four guide claws described above.
[0115]
In the above example, the column switching units having different shapes are mixed in one coil. In addition, the shape of the row changing portion also differs depending on the shape and type of the coil to be formed. For example, the shape of the column changing portion varies depending on the cross-sectional dimension of the conductor. The winding machine according to the present embodiment can cope with such row switching of different types of coils.
[0116]
As described above, according to the present embodiment, a plurality of types of column replacement portions can be formed without performing jig replacement or the like, so that productivity can be improved.
[0117]
In this embodiment, as shown in FIGS. 6 to 12, when the nozzle 85 changes the supply direction of the conductor to cause a column change, the guide claw prevents the conductor from shifting. The function of the guide claws stabilizes the shape of the row changing section, and in this regard, productivity can be improved.
[0118]
In the present embodiment, as described with reference to FIG. 8, in the process of sandwiching one or a plurality of conductors between the guide claws, the width of the conductor to be sandwiched once (for one or a plurality of conductors) is larger than the guide width. The gap between the claws is greatly widened, and the conductor is then accepted. As a result, damage to the conductive wire due to contact between the conductive wire and the guide claws, particularly damage to the insulating coating, is prevented.
[0119]
Further, in the present embodiment, as described with reference to FIG. 8 and the like, both ends of the coil being formed are restrained by the guide claws on both sides of the winding frame. Thereby, the displacement of the conductive wire is reliably prevented, and the shape of the coil is stabilized.
[0120]
In this embodiment, as described with reference to FIG. 13, when the winding is completed, the guide claws move the coil in the bobbin rotation axis direction and remove the coil from the bobbin. Therefore, the number of manual operations for removing the coil is reduced, and the coil manufacturing operation is easy. Then, the coil can be removed from the bobbin without providing a dedicated actuator, and the device can be configured simply.
[0121]
<Embodiment 2. >
Next, a second preferred embodiment of the present invention will be described. This embodiment is a modification of the first embodiment. Therefore, description of the same items as in the first embodiment will be omitted as appropriate.
[0122]
In the winding machine of the present invention, the two guide members disposed before and after in the conducting wire traveling direction with the column changing portion interposed therebetween are driven independently. That is, in FIG. 4, the guide members 7 and 8 move independently in the direction of the bobbin rotation axis, and a height difference occurs between the two positions. For this independent drive, one guide member 8 is provided with a telescopic arm 8a, and an actuator 19 for expanding and contracting the arm 8a is provided. This actuator 19 is also shown in FIG. 3, and for example, a cylinder type actuator is used. The actuator 19 is controlled to operate in conjunction with the motor 5 serving as a reel rotating actuator. This is for synchronizing the operation of the guide member with the rotation of the bobbin.
[0123]
Here, in order to improve the productivity of the coil, it is desired to reduce the time required for forming the coil. To reduce the time, it is effective to increase the rotation speed of the bobbin 1. However, when the reel 1 is rotated at a relatively high speed, it becomes difficult for the actuator 19 to follow the reel rotation.
[0124]
In order to improve the followability, a servo (NC) axis may be used instead of the cylinder type actuator. However, this type of actuator is expensive and causes an increase in cost.
[0125]
In view of the above circumstances, in the present embodiment, the operation of the guide member linked to the rotation of the bobbin is ensured. To achieve this object, the guide member is driven by mechanical element means that mechanically converts and uses the rotational force of the bobbin instead of the cylinder actuator. More specifically, as shown in FIG. 16, a cam that rotates together with the bobbin is connected to a guide member. Using the cam, the guide member performs a desired operation. Hereinafter, this cam mechanism will be described in detail.
[0126]
FIG. 16 shows the mechanism of the winding machine of the present embodiment. The same components as those of the winding machine in FIG. 4 are denoted by the same reference numerals. Here, parts not shown in the winding machine of FIG. 4 will be mainly described. Since the winding machine shown in FIG. 16 is symmetrical, the configuration of the right half will be mainly described.
[0127]
In FIG. 16, a ring-shaped cam disk 200 is provided so as to rotate together with the reel 1. The cam disk 200 is attached to the holding link 11 by a plurality of telescopic arms 202. Since the holding link 11 rotates with the bobbin 1, the cam disk 200 also rotates with the bobbin 1. The cam disk 200 is urged by a spring 204 in a direction away from the holding link 11, that is, toward the bobbin 1.
[0128]
The guide member 8 is attached to the cam disk 200 at the distal end of the telescopic arm 8a. When the cam disk 200 moves in the direction of the rotation axis, the guide member 8 moves together. When the cam disk 200 comes closest to the winding frame 1, that is, when the telescopic arm 8a extends to the maximum, the telescopic arm 8a is moved so that the positions of the guide member 8 and the guide member 7 in the rotation axis direction become equal. It is configured. The guide member 8 is slidable in the radial direction with respect to the cam disk 200. On the other hand, the guide member 7 is provided so as not to contact the cam disk 200.
[0129]
A ring-shaped first ring cam 206 and a second ring cam 208 are provided on one surface of the cam disk 200 along the outer circumference. A first cam follower (follower) 210 contacts the first ring cam 206, and a second cam follower 212 contacts the second ring cam 208. Both cam followers 210 and 212 are attached to a follower support arm 214. The follower support arm 214 and the cam followers 210 and 212 do not rotate.
[0130]
The follower support arm 214 is moved in the rotation axis direction by a cam on / off / switch actuator 216. The right half of FIG. 16 shows a state in which the arm 214 is moved rightward by the actuator 216 and the cam follower and the cam are in contact with each other. In this state, the cam functions (cam operating state, valid state). On the other hand, in the left half of FIG. 16, the arm 214 is arranged by the actuator 216 so that the cam follower does not contact the cam. In this state, the cam does not function (cam inoperative state, invalid state).
[0131]
FIG. 17 is a view of the cam disk 200 viewed from the rotation axis direction. The first ring cam 206 and the second ring cam 208 draw concentric circles surrounding the rotation shaft, and the second ring cam 208 is on the outside. The ring cams 206 and 208 are so-called end cams having undulations along the circumferential direction. The profile of the cam surface is set so that the guide member 8 performs a desired axial movement. In the present embodiment, as shown in FIG. 17, the cam surface is high in a quarter range (90 degrees, hatched portion), and the cam surface is low in the remaining reference portions. The high and low connection parts are set smoothly. The setting of the cam surface will be described later together with the operation of the winding machine.
[0132]
As shown in FIG. 17, the two cam followers 210 and 212 are arranged on the opposite sides of the rotation shaft. Both cam surfaces of the cam rings 206 and 208 are set point-symmetrically about the rotation axis, and the height difference H is equal between the two cams. In other words, two cams of the same setting are provided 180 degrees out of phase. Therefore, both cam followers 210 and 212 push the both ends of the cam disk simultaneously by the same amount. As a result, the cam disk is prevented from tilting, and the disk is reliably positioned.
[0133]
Next, the operation of the winding machine of the present embodiment will be described with reference to FIG. In the present embodiment, a case where the trapezoidal coil of FIG. 6 is manufactured as in the first embodiment will be described. FIG. 18 shows a part of the step of winding the third layer.
[0134]
The upper half of FIG. 18 corresponds to the right half of FIG. 16, and the lower half corresponds to the left half of FIG. Here, only one cam is shown for each half, but actually, as shown in FIG. 16, two cams are provided for each half. The operation of the guide claw in the entire third layer winding process is the same as that shown in FIG.
[0135]
Now, as shown in FIG. 18A, the cam in the upper half is in contact with the cam follower, and the cam is in the operating state. On the other hand, the lower half cam is not in contact with the cam follower, and the cam is in a non-operating state. This is because only the upper half cam is required for forming the third layer. The lower cam follower has been evacuated so that it does not function. Of course, in the formation of another layer, the operation / non-operation can be switched as required.
[0136]
The switching between the operation and the non-operation is performed by a cam on / off actuator (not shown). The upper half actuator moves the follower support arm to position the cam follower in the cam operating position. The lower half of the actuator has the cam follower located at the cam non-operating position (retracted position).
[0137]
FIG. 18A shows a state where the winding of the first row of the third layer is completed. The cam follower is in contact with the reference portion (low portion) of the cam in the upper half. This is the portion not hatched in FIG. The cam disc is pressed by a spring toward the bobbin. Therefore, the guide claw FL is also pushed toward the winding frame, and the left and right guide claws FL and BL are at the same height. The lower half is in a cam non-operating state, and the left and right guide claws FR and BR are always at the same height.
[0138]
FIG. 18B shows a state in which the bobbin is slightly rotated from FIG. 18A. A coil wire is about to be wound between two guide claws FL and FR. At this time, it is preferable to move the guide claw FL upward once and then return it. Since the space between the claws FL and FR is greatly widened, winding of the coil wire is easy, and damage to the coil wire due to contact of the claws of the coil wire is prevented.
[0139]
The above-mentioned vertical movement of the guide claw FL is realized using a cam. That is, in FIG. 18B, the cam follower is in contact with a high portion (crest portion) of the cam, the cam is pushed upward, and the guide claw FL is moved upward accordingly. The height difference of the cam surface is set to be equal to the required retreat movement amount of the guide claw FL.
[0140]
At this time, the cam follower is located at the hatched portion in FIG. The cam peak is referred to herein as the dog. The cam profile is set so that the cam follower is located at the dog portion while the coil wire passes between the guide claws. Specifically, while the coil wire is wound around one side surface of the winding frame (the surface in contact with the guide claw FL), the dog is moved so that the guide claw FL moves independently of the guide claw BL and separates from the guide claw FR. The part has been set. As a result, the range of the dog portion is 90 degrees. However, the angle of 90 degrees is changed by the winding operation.
[0141]
Next, FIG. 18C shows a state where the rotation is further advanced from FIG. 18B. The cam follower has passed the cam peak (dog) and has reached the cam reference. The cam plate and the guide claw FL are pushed in the rotation axis direction by a spring. The guide claw FL stops at a position where it abuts the coil wire, and therefore, there is a gap between the cam follower and the cam. The rotation further proceeds after FIG. 18C, and when the coil wire is wound between the guide claws BL and BR, the guide claws BL are moved upward. At this time, the cam follower moves upward and contacts the cam again. Then, the next row is wound again according to the above-described operation.
[0142]
The operation of the winding machine of the present embodiment has been described above. Here, only a part of the winding process of the third layer has been described, but the cam mechanism operates similarly in the winding process of other portions. That is, when the coil wire is sandwiched between the guide claws, the claws move up and down according to the profile of the cam. The operation of the configuration other than the cam mechanism is the same as that of the first embodiment.
[0143]
Next, a configuration of an actual device will be described with reference to FIGS. FIG. 19 is a plan view of a part of the cam mechanism of the present embodiment, which is a part of the apparatus of FIG. FIG. 20 is a cross-sectional view of the winding machine cut at the bobbin portion, and shows the configuration of FIG. 19 when viewed from the bobbin rotation axis direction. 19 and 20, some components are appropriately omitted in FIGS. 19 and 20.
[0144]
As shown in both figures, the cam disk 200 is attached to the holding ring 50 by a telescopic arm 202, and the number of arms is four. A spring 204 is provided coaxially outside each telescopic arm 202, and the spring 204 presses the cam disk 200 toward the bobbin. However, the arrangement of the spring 204 is not limited to that shown in FIG. 19, and for example, a single spring having a large diameter surrounding the outer side of the telescopic arm 202 coaxially with the cam disk may be used.
[0145]
The guide claw 56 is slidably attached to the cam disk 200 via the rail 250. On the other hand, the guide claw 54 is provided so as not to contact the cam disk 200. An escape notch is provided in the cam disk 200 to maintain non-contact.
[0146]
The cam disk 200 has two cam portions 206 and 208 around the periphery thereof. A first cam follower 210 contacts the first ring cam 206, and a second cam follower 212 contacts the second ring cam 208. The right half of FIG. 19 shows a state where the cam follower is in contact with the cam reference portion, and the left half of FIG. 19 shows a state where the cam follower is in contact with the cam ridge.
[0147]
The two cam followers 210 and 212 are supported by a follower support arm 214. The follower support arm 214 extends beyond the axis of rotation from one follower to the other. A central portion of the support arm 214 is attached to the guide holder 48 via a cam on / off / switching actuator 216. The guide holding table 48 is a table that supports the holding ring 50, and is fixed to the guide table 42. As described above, the actuator 216 moves the support arm 214 to switch between operation and non-operation of the cam.
[0148]
19 and 20 have the mechanism of the present invention shown in FIG.
[0149]
The preferred second embodiment of the present invention has been described above. In the present embodiment, by using the cam mechanism, the guide member is released only when the coil wire is wound between the guide members, and at other times, the coil wire on the winding frame is securely pressed by the guide member, and thereby the coil The dimensional accuracy can be improved.
[0150]
In particular, in the present embodiment, independent driving of the guide members (7, 8) on both sides of the rotating shaft is realized by using a mechanism that mechanically utilizes the winding frame rotational force such as a cam mechanism. Therefore, there is no delay in the operation of the guide member due to the rotation of the bobbin as in the case of using the arm extending / contracting actuator (FIG. 4, reference numeral 19), and the cooperative operation between the bobbin and the guide member can be reliably performed.
[0151]
Further, according to the present embodiment, since the arm expansion / contraction actuator 19 is not required, there is no need to perform cooperative control between the actuator 19 and the bobbin rotation motor 5, and there is an advantage that control of the winding machine is facilitated.
[0152]
In this embodiment, the arm extension / retraction actuator 19 shown in FIG. 4 is no longer required, but a cam on / off / switch actuator 216 shown in FIG. 16 is newly added. The new actuator 216 operates when transitioning from one layer to another. High responsiveness for cooperating with the rotation of the bobbin during the winding process of each layer, such as the arm expansion / contraction actuator 19, is not required. Therefore, a sufficient function can be performed by an inexpensive cylinder.
[0153]
Further, according to the present embodiment, two ring cams are provided coaxially on the rotating plate. Therefore, during the operation of the cam, both sides of the rotary plate are evenly pressed with the rotary shaft interposed therebetween. Since the inclination of the rotating plate is thereby prevented, the positioning of the rotating plate and the guide member is reliably performed, and the wear of the cam and the peripheral members is 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 shown in 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 illustrating 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 view showing a modified example 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. 14;
FIG. 16 is a diagram illustrating a mechanism of a winding machine according to a second embodiment.
FIG. 17 is a view showing a configuration of a cam disk shown in FIG. 16;
FIG. 18 is a diagram illustrating an operation of the winding machine according to the second embodiment.
19 is a diagram showing a configuration of an actual device of the mechanism of FIG. 16;
FIG. 20 is a diagram showing a configuration of an actual device of the mechanism of FIG. 16;
[Explanation of symbols]
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, 13a second cylinder, 15 conversion link, 17th link 1 actuator, 19 second actuator, 19 a fork, 21 third actuator, 23 control unit, 30 device base, 42 guide table, 44 rail, 46 a, 46 b motor, 48 guide holding base, 50 holding ring, 54, 56 guide claw Arm, 60 disk, 62 drive cylinder support, 64 rails, 66 drive 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 Escape, 108 Guide groove, 110 Clamp claw, 112 Ramp spring, 116 release rod, 120 clamp release actuator, 122 push arm, 124 introduction actuator, 126 introduction arm, BL, BR, FL, FR guide claws.

Claims (8)

In a winding machine that forms a coil by winding a wire while aligning a conductive wire around a rectangular winding portion of a winding frame,
The conductor is brought into contact with the conductor at the layer where the coil is wound around the reel, and the winding position of the conductor is defined , and the conductor is rotated from one row to the next by rotating synchronously with the reel. A guide means is provided for adjusting the shape of the transition line changing part,
The guide means,
A first guide member and a second guide member that are in contact with the conductor from both sides in the column replacement direction on the front side in the traveling direction of the conductor with respect to the column replacement portion;
A third guide member and a fourth guide member that are in contact with the conductor from both sides in the column replacement direction on the rear side in the traveling direction of the conductor with respect to the column replacement part;
Wherein the first guide member, the second guide member, the third guide member, and the fourth guide member are independently movable in the direction of the reel rotation axis, and are movable in the radial direction of the reel. A winding machine characterized by being provided so as to move simultaneously . The winding machine according to claim 1,
Including a row change driving means for changing the direction of supply of the conductor by changing the supply direction of the conductor when the conductor to be wound around the column change portion is supplied to the bobbin,
A winding machine, wherein the guide member of the guide means prevents a displacement of the conductor on the winding frame when the supply direction of the conductor is changed by the row changing drive means. The winding machine according to claim 2,
The first guide member and the second guide member, or the third guide member and the fourth guide member widen a gap between the guide members when a conductor is supplied, and connect the conductor to the gap. A winding machine characterized by accepting. 4. The winding machine according to claim 3, wherein the first guide member and the second guide member, or the third guide member and the fourth guide member are configured such that both ends in the axial direction of the coil after the supply of the conductive wire. 5. A winding machine characterized by being sandwiched and restrained to prevent a displacement of a conductor. The winding machine according to any one of claims 1 to 4,
When the winding is completed, at least one guide member moves the coil in the direction of the rotation axis of the bobbin, and removes the coil from the bobbin. The winding machine according to any one of claims 1 to 5,
Of the four guide members, two guide members disposed before and after in the conducting wire traveling direction with the row changing portion interposed therebetween are interlocked with the reel rotating operation by mechanically utilizing the rotational force of the reel. A winding machine driven independently of each other by mechanical element means. The winding machine according to claim 6,
The winding machine according to claim 1, wherein the mechanical element means includes a cam defining an operation required of the guide member, and a cam follower driven by the cam. The winding machine according to claim 7,
The cam is provided on a rotating member that rotates together with the bobbin, and is a ring-shaped end cam surrounding the bobbin rotating shaft,
The cam follower does not rotate with the bobbin,
A winding machine, wherein one of the two guide members is attached to the rotating member.

Images