JP4628052B2 - Nozzle rotation unit for winding machine - Google Patents

Description

The present invention relates to a nozzle rotation unit used in a winding machine for a multipole armature (mainly a motor core).

  2. Description of the Related Art Conventionally, a winding machine has been widely used to wind a wire for forming a coil around a pole (core) of a multipole armature (motor core). In order to improve performance with a limited size of an armature such as a motor, how many windings can be formed in a limited winding space of a multi-pole armature (work) As required. For this purpose, so-called aligned winding, in which the wires adjacent to the pole are aligned and wound without any gap, is effective.

  In such a case, for example, the motor that drives the nozzle for feeding the wire and the motor that rotates the workpiece are individually driven, and the nozzle and the workpiece move relative to each other, so that the winding to the pole takes a short time. In addition, it can be wound without a gap. That is, the nozzle moves up and down, and the workpiece is rotated around its center, whereby the wire is wound around the pole. In this specification, such a winding method (winding machine) is referred to as a nozzle / work drive type.

  Before and after such a winding step, a plate-like (wall-like), rod-like (wire-like), in which an intermediate part of the wire other than the winding part (wire intermediate part) is erected (formed) on the end face of the workpiece, A connecting wire forming process that spans as a connecting wire to a connecting member such as a tubular shape (tubular), and a tying process for tying a wire rod to a tying pin or the like that is erected (formed) on a work are accompanied. Often implemented. For example, as proposed in Patent Document 1 by the applicant of this application, the posture of the nozzle may be changed to a form different from the winding process, and the crossover forming process and the binding process may be performed. In particular, in the case of an inner core type having a plurality of poles projecting radially inward from a yoke portion that forms a ring-shaped outer periphery, such a posture-changing type nozzle can be used to form a crossover forming process or a tangle. In carrying out the process, the wire rod is smoothly drawn out from the nozzle, and it is possible to form a crossover or a binding in a small space.

  In addition, in the case of Patent Document 2, it is necessary for the applicant of the present application to span a jumper wire on a jumper engaging portion erected on the work end surface opposite to the coil forming wire (lead wire) supply side. (In such a case, since a connecting line is usually formed on the lower side of the workpiece, such a positional relationship is referred to as “lowering” including the case where it is not actually on the lower side) A crossover guide member for forming a line (under crossover line) was proposed. As a result, it becomes easy to form a crossover line (under crossover line) in the crossover line forming process that is always necessary between the winding process and the winding process.

JP 2003-169455 A JP 2003-164124 A

  Incidentally, the connecting wire guide member shown in Patent Document 2 holds the connecting wire forming wire and moves separately from the nozzle. Therefore, depending on the moving direction, the moving amount, the shape of the holding portion, etc., stress ( (Tensile force) may be applied. In particular, when the wire becomes thin, breakage due to stress tends to occur. However, for example, if the moving direction and the moving amount of the crossover guide member are limited, there is a possibility that the crossover line cannot be bridged over the crossover locking portion or that the crossover line is slack. As described above, depending on the thickness and strength of the wire, there is a possibility that a highly skilled technique and a long-time confirmation test may be required for designing the crossover guide member.

An object of the present invention is to provide a nozzle used in a winding machine that can form an undercarriage wire reliably and quickly while having a simple structure, and can reduce the manufacturing cost of a product (such as a multipole armature). It is to provide a rotating unit.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, the premise winding machine is
A workpiece having a plurality of poles projecting radially inward from a yoke portion forming a ring-shaped outer periphery and a crossover locking portion formed on one end face of the yoke portion, and / or the other of the yoke portions A nozzle for holding a coil forming wire supplied from the end surface side through the radially inner side toward the outer side is driven in the circumferential direction and the thickness direction of the workpiece, respectively, so that the wire is applied to each pole of the workpiece. The winding state where the wire is wound and the midway part of the wire other than the winding part wound around the pole (hereinafter referred to as the midway part of the wire) is hung as a jumper that is locked around the crossover locking part. A winding machine used for switching to a crossover formation state passing,
In the winding state, the tip of the nozzle is located outside the winding portion and moves relative to the circumferential direction and the thickness direction of the workpiece, and winds the wire.
In the connecting wire forming state, the tip of the nozzle is positioned on the outer side in the workpiece radial direction of the connecting wire locking portion and on the inner side with respect to the outer edge in the workpiece thickness direction, and relatively moves in the workpiece circumferential direction. In some cases, the midway portion of the wire is stretched over the locking portion as a crossover.

  Thus, in the winding state, the tip of the nozzle is located outside the winding portion, so that the winding by the workpiece and / or the nozzle is performed reliably and rapidly. Further, in the connecting wire forming state, the tip of the nozzle is located on the outer side in the workpiece radial direction of the connecting wire locking portion and on the inner side (for example, the upper side) than the outer edge (for example, the lower end edge) in the workpiece thickness direction. And / or the crossover formation by the nozzle is also performed reliably and rapidly. Therefore, the wire is wound around each pole of the inner core type work, and the crossover wire (hereinafter referred to as the crossover wire) is connected to the crossover locking portion erected on the work end surface opposite to the supply side of the coil forming wire (lead wire). When crossing a lower crossover line), the lower crossover line can be hung so as not to come off from the crossover locking portion. In addition, since it has a simple configuration, it is possible to form an undercarriage line without crossing or disturbing the winding portion, improving the product yield of a multipole armature or the like, and reducing the manufacturing cost.

  In addition, regarding the nozzle / work drive type winding machine according to the present invention, “a plurality of poles projecting radially inward from a yoke part forming a ring-shaped outer periphery and a jumper formed on one end face of the yoke part” A nozzle that holds a workpiece having a locking portion and / or a coil forming wire supplied from the other end face side of the yoke portion to the outside through the radially inner side is driven in the circumferential direction of the workpiece. Thus, the circumferential component of the nozzle that moves relative to and away from the pole to be wound, and the workpiece and / or the nozzle are driven in the thickness direction of the workpiece, whereby the nozzle is wound. The wire rod is wound around each pole of the workpiece, having a trajectory of a combination of a thickness direction component that moves relative to the power pole and a slot formed between the power pole and the adjacent pole. It can also be expressed as because of the winding machine ".

That is, the nozzle / work drive type winding machine in the present invention may be any of the following four types.
(1) When the workpiece is driven in the circumferential direction, the nozzle is wound in the circumferential direction component in which the nozzle is moved away from the pole to be wound, and the nozzle is driven in the thickness direction of the workpiece. It has a trajectory in the form of a combination of a component in the thickness direction that moves relative to each other so as to pass through a slot formed between a pole to be formed and a pole adjacent thereto.
(2) When the workpiece is driven in the circumferential direction, the nozzle should be wound when the workpiece is driven in the thickness direction; It has a trajectory in the form of a combination of the pole and the thickness direction component that moves relative to each other so as to pass through a slot formed between the poles adjacent to the pole.
(3) When the nozzle is driven in the circumferential direction of the workpiece, the nozzle is driven in the thickness direction of the workpiece by moving the nozzle in the thickness direction of the workpiece, and the circumferential direction component moving away from the pole to be wound by the nozzle. It has a trajectory in the form of a combination of a component to be wound and a thickness direction component that moves relative to each other so as to pass through a slot formed between the adjacent poles.
(4) When the nozzle is driven in the circumferential direction of the workpiece, the nozzle is wound by the circumferential component moving away from the pole to be wound by the nozzle and the workpiece being driven in the thickness direction. It has a trajectory in the form of a combination of a component in the thickness direction that moves relative to each other so as to pass through a slot formed between a pole to be formed and a pole adjacent thereto.

Furthermore, in the present invention, as described below, a line processing state (line processing step) for processing an end portion (wire end portion) or the like of the wire may be included.
(1) A state in which the wire is entangled with a binding pin or the like erected on the end surface of the workpiece: entanglement step (2) A wire end is sandwiched to be caulked with a wire holding member erected on the end surface of the workpiece State: Caulking step (3) The wire rod is hung on a work holding jig, a pin for laying standing on the wire rod holding jig, etc. State: Hanging step (4) The wire end is placed on the workpiece holding jig, wire rod A state of being sandwiched between wire end clamp portions provided on a holding jig or the like: Clamping process In (3) and (4), when a workpiece is taken out from the workpiece holding jig as a wound multipolar armature, In some cases, the wire held in the wire holding part such as the wire end clamp part is held so as to be detached from these parts.

In order to solve the above problems, the nozzle rotation unit used in the winding machine of the present invention is:
A workpiece having a plurality of poles projecting radially inward from a yoke part forming a ring-shaped outer periphery, and a crossover locking part formed on a crossover side end face which is one end face of the yoke part, and the yoke nozzles for holding the wire for the coil formed from the other end face side of the parts is supplied toward the radially inward and into the outside, respectively Oite are relatively movable in the circumferential direction and the thickness direction of the workpiece, these A winding state in which the wire rod is wound around each pole of the workpiece by relative movement of the workpiece and the nozzle, and a wire intermediate portion that is a midway portion of the wire other than the winding portion wound around the pole, Used in a winding machine that is used to switch to a crossover formation state that crosses as a crossover that is locked around the stop,
A rotating end that is attached to a rotating shaft that extends in a predetermined direction from a nozzle side end portion, which is one end portion to which the nozzle is attached, passes through a direction changing portion, and is arranged in parallel with the crossover side end surface. A nozzle holder that exhibits a gate shape that reaches the end of the moving shaft, and that the center line of the nozzle and the center line of the rotating shaft are substantially orthogonal to each other on a projection plane parallel to both center lines,
The nozzle attached to the nozzle side end of the nozzle holder;
The rotating shaft attached to the rotating shaft side end of the nozzle holder so as to be relatively rotatable;
A rotary shaft drive actuator for rotationally driving the rotary shaft;
A holder driving actuator that is fixed to the rotating shaft so as not to rotate relative to the rotating shaft, and that rotates the nozzle holder around the rotating shaft;
In the winding state, the rotation shaft driving actuator is driven, and the center line of the nozzle is substantially parallel to the crossover side end surface or intersects with a predetermined winding inclination angle around the rotation axis. The tip of the nozzle is positioned outside the winding portion and moves relative to the circumferential direction and the thickness direction of the workpiece, and winds the wire.
In the crossover formation state, the retainer driving actuator is driven, and the rotation is performed so that the centerline of the nozzle intersects the crossover side end face across the crossover inclination angle larger than the winding inclination angle. By rotating around the axis, the tip end of the nozzle is positioned on the outer side in the workpiece radial direction of the crossover locking portion and on the inner side with respect to the outer edge in the workpiece thickness direction, and relatively moves in the workpiece circumferential direction. It is characterized in that the wire intermediate part is hung on the wire locking part as a crossover.

  In this way, by turning the nozzle around the rotation axis to change the posture between the winding state and the connecting wire forming state, and forming the connecting wire inclination angle larger than the winding inclination angle, the connecting wire forming state In this case, the tip of the nozzle can be easily positioned on the inner side (for example, the upper side) of the crossover locking portion on the outer side in the workpiece radial direction than the outer edge (for example, the lower end edge) in the workpiece thickness direction. In addition, by changing the posture of the nozzle from the winding state when forming the underline, the tip of the nozzle and the crossover locking part are in an optimal positional relationship for passing over the underline. The space inside the pole (center) can be used effectively. In particular, such a space utilization effect is increased in the case of a workpiece having a relatively large thickness (or the height of the crossover locking portion) as compared with the outer diameter (or the inner diameter of the pole).

And the nozzle rotation unit used for such a winding machine is:
It extends in a predetermined direction from one end portion (hereinafter referred to as a nozzle side end portion) to which the nozzle is attached, passes through the direction changing portion, and then reaches the other end portion (hereinafter referred to as a rotation shaft side end portion) to which the rotation shaft is attached. A nozzle holder that exhibits a gate shape, and that the center line of the nozzle and the center line of the rotating shaft are substantially orthogonal to each other on a projection plane parallel to both center lines;
A nozzle attached to the nozzle side end of the nozzle holder;
A rotating shaft attached to the rotating shaft side end of the nozzle holder so as to be relatively rotatable;
A rotary shaft drive actuator for rotationally driving the rotary shaft;
A holder driving actuator that is fixed to the rotating shaft so as not to rotate relative to the rotating shaft, and that rotates the nozzle holder around the rotating shaft;
In the winding state, the actuator for driving the rotating shaft is driven to rotate around the rotating shaft so that the center line of the nozzle is substantially parallel to the crossover end surface or intersects with a predetermined winding inclination angle. With the tip of the nozzle located outside the winding part,
In the crossover formation state, the retainer driving actuator is driven and rotates around the rotation axis so that the center line of the nozzle intersects the crossover side end face across the crossover inclination angle larger than the winding inclination angle. Accordingly, the tip of the nozzle is located on the outer side in the workpiece radial direction of the crossover locking portion and on the inner side of the outer edge in the workpiece thickness direction.

  As described above, since the rotation shaft is attached to the rotation shaft side end portion of the nozzle holder so as to be capable of relative rotation, an overhead wire that does not need to change the posture of the nozzle from the winding state in the connection wire formation state is formed. In the case of a work to be performed, it is easy to remove the nozzle rotation unit from the rotation shaft and replace it with another nozzle rotation unit (for example, see Patent Document 1) that does not have an actuator for driving the holder (for example, an air cylinder). Yes. Note that in the case of a work forming a crossover line, a rotary shaft driving actuator (for example, an air cylinder) can change the posture of the nozzle during winding and line processing (such as binding). On the other hand, in the case of a work that forms an overhanging line, the rotary shaft driving actuator (for example, an air cylinder) changes the posture of the nozzle during winding, overline forming, and line processing (such as tangling). It can be carried out.

  Specifically, the rotating shaft is attached to the rotating shaft side end portion of the nozzle holder so as to be relatively rotatable so that the center line is horizontally arranged, and the nozzle has the center line thereof. It is desirable to be fixed to the nozzle side end of the nozzle holder so as to be horizontally arranged in the winding state. Since the center line of the nozzle is arranged horizontally in the winding state, the nozzle is generally sent along the end surface (crossover side end surface) of the workpiece during winding, and aligned winding becomes possible. In order to arrange the center line of the nozzle horizontally in the winding state, the mounting angle between the nozzle and the nozzle side end of the nozzle holder is made non-right angle, or the nozzle side end is formed in a bent shape. can do.

In addition, the winding machine
A workpiece having a plurality of poles projecting radially inward from a yoke part forming a ring-shaped outer periphery and a crossover locking part formed on one end face of the yoke part (hereinafter referred to as a crossover end face); And / or a nozzle that holds a wire for forming a coil that is supplied from the other end face side of the yoke portion to the outside through the radially inner side is driven in the circumferential direction and the thickness direction of the workpiece, respectively. A winding state in which the wire is wound around each pole of the workpiece, and a midway portion of the wire other than the winding portion wound around the pole (hereinafter referred to as a midway portion of the wire) bypassing the connecting wire locking portion A winding machine that is used to switch to a crossover forming state that crosses over as a crossover that is locked and
The nozzle can be rotated around a rotation shaft arranged in parallel with the end surface on the crossover side, and the posture can be changed.
In the winding state, the tip end of the nozzle is rotated around the rotation axis so that the center line of the nozzle intersects the crossover end surface with a predetermined winding inclination angle therebetween. Positioned on the outside of the wire portion and relatively moved in the circumferential direction and the thickness direction of the workpiece, winding the wire rod,
In the connecting wire forming state, the nozzle center line is held so as to intersect with the connecting wire side end surface across the connecting wire inclination angle with the connecting wire inclination angle being substantially equal to the winding inclination angle, so that the tip of the nozzle is Positioned on the outer side in the workpiece radial direction of the connecting wire locking portion and on the inner side of the outer edge in the workpiece thickness direction and relatively moved in the circumferential direction of the workpiece, the intermediate portion of the wire rod is passed over the connecting wire locking portion as a connecting wire. There is a case .

  In this way, by forming the winding inclination angle and the connecting wire inclination angle substantially equal, it is not necessary to change the attitude of the nozzle between the winding state and the connecting wire formation state. Cycle time can be shortened.

And the nozzle rotation unit used for such a winding machine is:
It extends in a predetermined direction from one end portion (hereinafter referred to as a nozzle side end portion) to which the nozzle is attached, passes through the direction changing portion, and then reaches the other end portion (hereinafter referred to as a rotation shaft side end portion) to which the rotation shaft is attached. A nozzle holder that exhibits a gate shape, and that the center line of the nozzle and the center line of the rotating shaft are substantially orthogonal to each other on a projection plane parallel to both center lines;
A nozzle attached to the nozzle side end of the nozzle holder;
A rotating shaft attached to the rotating shaft side end of the nozzle holder;
A rotation shaft driving actuator for rotating the rotation shaft,
In the winding state, the actuator for driving the rotating shaft is driven, and the nozzle is rotated around the rotating shaft so that the center line of the nozzle intersects the crossover side end surface across a predetermined winding inclination angle. The tip of is located outside the winding part,
In the crossover formation state, the nozzle center line is held so as to intersect with the crossover side end face across the crossover inclination angle substantially equal to the winding inclination angle, so that the tip of the nozzle is connected to the crossover locking portion. There is a case where it is located outside the workpiece radial direction and inside the workpiece thickness direction outer edge.

  As described above, when the connecting wire inclination angle is formed so as to be substantially equal to the winding inclination angle in the connecting wire forming state, the rotating shaft driving actuator for rotating the rotating shaft is provided for other configurations. The nozzle rotation unit (for example, refer patent document 1) which has can be used similarly to the past.

  Specifically, the rotation shaft is fixed to the rotation shaft side end of the nozzle holder so that the center line is horizontally arranged, and the nozzle is in the winding state with the center line in the winding state. It is desirable to be fixed to the nozzle side end of the nozzle holder so as to be arranged with a winding inclination angle from the horizontal plane. If the center line of the nozzle is arranged with a winding inclination angle from the horizontal plane in the winding state, there is no change in the posture of the nozzle when forming the underline, so the structure of the nozzle rotation unit is Be simple. In addition, in order to arrange the center line of the nozzle with a winding inclination angle from the horizontal plane in the winding state, the mounting angle between the nozzle and the nozzle side end of the nozzle holder is made non-right angle or the nozzle side end Can be formed in a bent shape.

Example 1
Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. 1 is an overall side view of a winding machine 100 as Embodiment 1 of the present invention, FIG. 2 is an overall front view, and FIG. 3 is an overall plan view. As shown in FIG. 1, the winding machine 100 includes a base 1, a base 2, a nozzle 3 (first member), and a work (multi-pole armature) 6 (second member) which is a drive device and a rotational drive mechanism. The motor is mainly composed of an indexing rotation motor 4 and a nozzle driving motor 5. The base 1 and the base 2 are fixed to a main base (not shown). The base 1 fixes the index rotation motor 4 so as not to rotate.

  The nozzle 3 is attached to a nozzle bracket 60 (nozzle holder), and a nozzle rotation unit 70 including the nozzle bracket 60 is fixed to the timing belt 11. The timing belt 11 is connected to the nozzle driving motor 5. The vicinity of the nozzle driving motor 5 will be described later with reference to FIG. The nozzle driving motor 5 is fixed to a support member 12, and the support member 12 is fixed to a front / rear moving frame 14 to which a linear guide 13 is attached with a screw or the like. The linear guide 13 can move in a direction (front-rear direction) that moves forward and backward with respect to the workpiece 6 on a moving member 16 (feeding member) to which the linear rail 15 is attached. A forward / backward movement motor 17 for moving the forward / backward moving frame 14 is attached to the moving member 16. The forward / backward movement motor 17 converts a rotational motion into a linear motion via a coupling 18 by a ball screw device 18a (see FIGS. 2 and 3), and a direction in which the forward / backward moving frame 14 moves forward / backward with respect to the workpiece 6 (front / backward). Direction).

A linear guide 19 is attached to the moving member 16. The linear guide 19 is movable on the base 2 to which the linear rail 20 is attached in a direction (left / right direction) orthogonal to the front / rear moving frame 14. A lateral movement motor 21 (nozzle feed motor) for moving the moving member 16 is attached to the base 2. The lateral movement motor 21 converts a rotational motion into a linear motion by a ball screw device 22a (see FIG. 3) via a coupling 22 (see FIG. 2), and the moving member 16 is orthogonal to the front and rear moving frame 14. It is possible to move in the direction (left-right direction).

  FIG. 2 is a front view of the vicinity of the nozzle driving motor 5. The winding machine 100 is of a so-called double type in which the nozzles 3 are provided at two locations. Accordingly, the indexing rotation motor 4 (see FIG. 1), the work 6 (see FIG. 3), the nozzle bracket 60, etc. Two are also provided. As described above, the nozzle 3 is fixed to the nozzle bracket 60, and the nozzle rotation unit 70 including the nozzle bracket 60 is fixed to the linear guide 24 and the timing belt 11 with screws or the like. The linear guide 24 is movable on the support member 12 to which the linear rail 23 is attached in a direction (vertical direction) parallel to the spindle shaft 33 (see FIG. 1) to which the workpiece 6 (see FIG. 1) is attached. Yes. A nozzle driving motor 5, which is a rotation driving mechanism for moving the nozzle rotating unit 70 up and down, is attached to the support member 12. The nozzle driving motor 5 rotates a pulley 27 attached to the support member 12 from an output shaft 25 that is a rotating shaft. The timing belt 11 is hung on the pulley 27, and the timing belt 11 is moved together with one pulley 28. Since the pulley 27 and the pulley 28 are provided with axes that support the rotation in parallel, the nozzle rotation unit 70 attached to the timing belt 11 can move linearly in the vertical direction between the axes.

  Returning to FIG. 1, the base 1 fixes the indexing rotation motor 4 so as not to rotate. A spindle shaft 33 that is a rotating shaft is directly attached to the output shaft 31 that is a rotating shaft of the indexing rotation motor 4. The axial load applied to the spindle shaft 33 is supported by a thrust bearing 38 attached to the base 1. A workpiece receiver 40 (an example of a workpiece holder) for fixing the workpiece 6 by a clamp mechanism (not shown) is integrally attached to the spindle shaft 33 via a workpiece receiver connecting portion 40a. The spindle shaft 33 and the work receiver 40 (work receiver connecting portion 40a) are fastened together by a fastening member 39 so as to be integrally rotatable.

  As shown in the plan view of FIG. 3, in this embodiment, the front-rear direction is the direction in which the front-rear moving frame 14 advances and retreats with respect to the work 6 (the advance side is the front and the reverse side is the rear), The workpiece supply / removal direction for supplying the workpiece 6 and for extracting the workpiece 6 after winding is set along the front-rear direction. Similarly, the left-right direction is the direction in which the workpieces 6 are arranged corresponding to the respective nozzles 3 (the direction connecting the center points of the workpieces 6), and the wire W (see FIG. 1) is the pole C (FIG. 4A). The nozzle feed direction is set along the left-right direction to feed the nozzle 3 in the radial direction of the workpiece 6 at a predetermined pitch (for example, by the thickness of the wire W) every time one turn is wound around (see). The workpiece 6 is an inner core type having a plurality of poles C (see FIG. 4A) protruding radially inward from a yoke portion 6c (see FIG. 4A) forming the outer periphery, and the nozzle bracket 60 The nozzle-side end 601 is disposed inside the workpiece 6, and the rotating shaft-side end 602 is disposed outside the workpiece 6.

  As shown in FIG. 3, the nozzle feed direction is set so as to intersect (for example, orthogonally intersect) the workpiece supply / removal direction. At this time, the nozzle feed direction is the left-right direction as viewed from the worker who performs the work supply / removal work. Further, the nozzle feeding direction is set to the workpiece arrangement direction. For the operator who performs the supply / extraction operation, the nozzle 3 can be easily seen and the winding state can be easily confirmed.

  Next, the nozzle rotation unit 70 will be described with reference to FIGS. The nozzle rotation unit 70 includes two (two) nozzle brackets 60 (nozzle holders) in the unit main body 700, and bearings 62a in the second shaft holes 62 (FIG. 5A) of the respective nozzle brackets 60. And two first air cylinders 72 (rotating shaft driving actuators) that individually rotate and drive these rotating shafts 71. At the same time, it is attached to be rotatable in the same direction. The second shaft hole 62 is formed orthogonal to the rotation shaft side end portion 602 of the nozzle bracket 60. The unit main body 700 of the nozzle rotation unit 70 is fixed to the timing belt 11 (see FIG. 2). The nozzle 3 is attached (fixed) to the first shaft hole 61 (FIG. 4B) of each of the two nozzle brackets 60. The first shaft hole 61 is formed orthogonal to the nozzle side end 601 of the nozzle bracket 60. In addition, 73 shown in FIG.5 (b) is a connection arm which connects the joint 72a and the rotating shaft 71 of the 1st air cylinder 72 via the connection pin 72b. Reference numeral 74 denotes a stopper for positioning and holding the nozzle 3 at two positions, that is, a winding state (winding step) and a binding state (entanglement step), which will be described later, by contacting the connecting pin 72b.

  On the other hand, as shown in FIG. 4, one end side of the L-shaped arm 76 (connection member) is relatively rotated at the shaft end of each rotation shaft 71 in parallel with the rotation shaft side end portion 602 of the nozzle bracket 60. It is fixed immovable. The base end side (cylinder side) of the second air cylinder 75 (clamp driving actuator) is connected to the other end side of the L-shaped arm 76 by the connecting pin 75b, and the joint 75a on the tip end side (piston side). Is connected to a connecting pin 75c fixed and erected orthogonally to the rotation shaft side end portion 602 of the nozzle bracket 60. Further, the connecting pin 75c comes into contact with the wall of a long hole (long groove) -shaped stopper 76a formed in the intermediate bent portion of the L-shaped arm 76, whereby the nozzle 3 is brought into a winding state (winding step) described later. Positioning and holding at two positions with the underpass line formation state (under crossover line forming step). Independent of the rotation drive of the rotation shaft 71 (nozzle bracket 60) by the first air cylinder 72, the nozzle bracket 60 is rotated by the rotation shaft 71 by the L-shaped arm 76 and the second air cylinder 75. It is rotated around. That is, the second air cylinder 75 changes the posture of the nozzle 3 from the winding state (winding step: see FIG. 7B) to the underpass line forming state (the under crossing line forming step: see FIG. 7C). Used when

  As shown in FIG. 4A, the respective rotation shafts 71 are arranged substantially orthogonal to the arrangement direction (see FIG. 3) of the workpieces 6 corresponding thereto. Further, the feed direction of the nozzles 3 (see FIG. 3) is arranged along the arrangement direction of the workpieces 6 corresponding to these nozzles 3. Here, the arrangement direction of the workpieces 6 refers to a direction connecting the center points of the workpieces 6 in a plan view of FIG. 4A (viewed in the axial direction of the workpieces 6).

  The tip of the nozzle 3 is located on the extension line of the second center line O2 (center line of the rotation shaft 71). That is, when the tip of the nozzle 3 and the center of the rotation shaft 71 coincide with each other, the rotation of the nozzle 3 around the rotation shaft 71 from the winding state (winding step) to the binding state (entanglement step) is performed. The amount of vertical displacement at the tip of the nozzle 3 accompanying the movement (posture change) is substantially zero.

Here, the nozzle rotation unit 70 is switched to the following three modes.
(1) The first air cylinder 72 causes the nozzle 3 (nozzle bracket 60) to rotate about a rotation shaft 71 (second shaft hole 62; second center line O2) in a predetermined direction to change the posture into a vertical shape. Then, the wire W is entangled with the binding pin 6a erected (formed) on the upper end (wire W supply side) end surface of the workpiece 6 (entanglement process: FIG. 6 (a), FIG. 7 (a). )reference);

(2) By the first air cylinder 72, the nozzle 3 is rotated in the reverse direction around the rotation shaft 71 to change the posture into a horizontal form, and the tip of the nozzle 3 is placed outside the winding portion (pole C) (below) ), The workpiece 6 is driven in the circumferential direction, and the nozzle 3 is driven in the thickness direction of the workpiece 6, thereby winding the wire W around each pole C of the workpiece 6 (winding process: FIG. 6 (a), FIG. 7 (b));

(3) By the second air cylinder 75, the nozzle 3 is further rotated in the reverse direction by a predetermined angle around the rotation shaft 71 to change the posture obliquely, and the tip of the nozzle 3 is placed below the workpiece 6 (on the wire W supply side). And on the outer side in the workpiece radial direction of the connecting wire pin 6b (crossover locking portion) erected (formed) on the end surface (crossing wire side end surface) and above the lower edge (outside the workpiece thickness direction outer edge). After the workpiece 6 is driven in the circumferential direction, the intermediate portion WM (wire intermediate portion) other than the winding portion is bridged over the connecting wire pin 6b as a connecting wire. Crossover line formation state (under crossover line formation step: see FIGS. 6B and 7C);

  As shown in FIG. 5A, the nozzle bracket 60 extends in a predetermined direction from a nozzle side end portion 601 in which a first shaft hole 61 for attaching the nozzle 3 is formed in an orthogonal shape, and passes through a direction changing portion 603. Thereafter, the second shaft hole 62 for attaching the rotation shaft 71 has a gate shape reaching the rotation shaft side end portion 602 formed orthogonally. The first center line O1 of the first shaft hole 61 (center line of the nozzle 3) and the second center line O2 of the second shaft hole 62 (center line of the rotating shaft 71) intersect at almost one point at right angles. Yes. Here, the predetermined direction is the workpiece thickness direction (up and down direction) in the winding state (winding step) and the horizontal direction in the binding state (entanglement step).

  As shown in FIG. 6A, the second center line O <b> 2 of the nozzle bracket 60 is the rotation center of the nozzle 3, and is attached to the winding machine 100 in a cantilever manner. The second center line O2 is fixed and arranged horizontally, and the first center line O1 is horizontal in the winding state (winding process), and in the workpiece thickness direction (up and down) in the binding state (winding process). Direction).

  Next, the operation of the winding machine 100 will be described with reference to FIGS.

<Starting-end binding process> …… Figure 8
By the first air cylinder 72 (see FIG. 4), the nozzle 3 (nozzle bracket 60) is rotated around the rotation shaft 71 (second shaft hole 62; second center line O2) arranged in parallel with the end surface of the workpiece W. It is rotated in a predetermined direction (for example, counterclockwise) to change its posture into a vertical shape (see FIG. 6A). At this time, the nozzle 3 is held above the workpiece 6 in order to avoid interference with the workpiece 6. In this state, the starting end portion of the wire rod W is entangled with the tying pin 6 a erected on the upper end surface of the workpiece 6.

<Winding process> ...... FIG. 9 and FIGS.
FIG. 9 shows a state of operation in the winding process by a plan view and a front view in partial cross section. By the first air cylinder 72 (see FIG. 4), the nozzle 3 (nozzle bracket 60) is rotated about 90 ° in the reverse direction (for example, clockwise) around the rotation shaft 71 to change the posture into a horizontal shape (see FIG. 4). 6 (a)), the tip of the nozzle 3 is positioned outside (below) the winding portion (pole C).

  In this state, when the workpiece 6 is driven in the circumferential direction by the index rotation motor 4 (see FIG. 1), the nozzle 3 is moved away from the pole C to be wound and relatively moved in the circumferential direction of the workpiece 6. . On the other hand, when the nozzle 3 is driven in the thickness direction of the workpiece 6 by the nozzle driving motor 5 (see FIG. 1), the nozzle 3 has a gap formed between the pole C to be wound and the pole C adjacent thereto. Relatively moves in the thickness direction of the workpiece 6 so as to pass through N (slot). Therefore, the nozzle 3 winds the wire W around the pole C of the workpiece 6 while drawing a trajectory of a combination of these circumferential direction components and thickness direction components.

  This winding process will be described in more detail with reference to FIGS. 13 to 15 showing the operation of the nozzle 3 and the work 6 'during winding. 13 to 15 relate to the outer core type workpiece 6 ′, the principle is the same as FIG. 9. As shown in FIG. 13A, the wire W is fed out from the nozzle 3. After that, as shown in FIG. 13B, the nozzle 3 causes the gap N1 (see FIG. 1) between the poles C by the nozzle driving motor 5 (see FIG. 1) while bringing the wire W into contact with one side S1 of the poles C. Down the slot).

  As shown in FIG. 14 (a), after the nozzle 3 moves down the gap N1 between the poles C, the indexing rotation motor 4 (see FIG. 1) rotates the workpiece 6 'clockwise so that the nozzle 3 moves to the pole C. It stops when it is located in a gap N2 adjacent to the gap N1. Next, as shown in FIG. 14B, the nozzle 3 moves up the gap N2 by the nozzle driving motor 5 (see FIG. 1).

  As shown in FIG. 15A, after the nozzle 3 is raised, the indexing rotation motor 4 (see FIG. 1) rotates the workpiece 6 'counterclockwise. The wire W comes into contact with the other side surface S2 of the pole C, and the first winding is completed. Next, as shown in FIG. 15B, the nozzle 3 descends the first gap N1 and starts the second winding.

  As shown in FIG. 15A, each time the nozzle 3 winds the wire W around the pole C once, the lateral movement motor 21 (see FIG. 3) is operated, and the thickness of the wire W is used as a reference. The nozzle 3 is sent at a predetermined pitch.

<Underline line forming process>...
FIGS. 10 and 11 show the state of operation in the underpass line forming step by a partial perspective view (a sectoral two-dot chain line portion) and a front view in partial cross section. By reducing the second air cylinder 75 (see FIG. 7C), the nozzle 3 (nozzle bracket 60) is further rotated in the reverse direction (for example, clockwise) by a predetermined rotation angle (for example, about 20 °) around the rotation shaft 71. ) And the posture is changed obliquely (see FIG. 6B). As a result, as shown in FIG. 10B, the first center line O1 is connected to the crossover side end face (lower end face; horizontal plane) of the workpiece 6 and the crossover inclination angle β corresponding to the rotation angle (for example, β ≒ 20 °) across. At this time, the tip of the nozzle 3 is positioned above the lower edge on the outer side in the workpiece radial direction of the connecting wire pin 6b erected on the connecting wire side end surface. At the same time, the nozzle driving motor 5 (see FIG. 1) and the lateral movement motor 21 (see FIG. 3) may be operated to finely adjust the tip position of the nozzle 3.

  In this state, as shown in FIG. 11 (a), the work 6 is driven in the circumferential direction (for example, clockwise) by the indexing rotation motor 4 (see FIG. 1), and the wire intermediate part WM becomes the crossover pin 6b. Is spanned as a crossover that bypasses the outside of the workpiece in the radial direction. In the case of a three-phase motor core, the transition width is equal to three poles C in the circumferential direction as shown in FIG.

<Next winding process> ...... FIGS. 12 to 15
For the next pole C to be wound, winding is performed in the same manner as the winding process described above.

  Hereinafter, the underline forming process of FIGS. 10 and 11 and the winding process of FIGS. 12 to 15 are alternately performed. Finally, the terminal end binding process for binding the terminal end of the wire W is already performed. This is performed in the same manner as the above-described start end portion binding step (see FIG. 8). When the workpiece 6 is a three-phase motor core, all the above steps are repeated three times (for three phases).

  In this way, by placing the tip of the nozzle 3 on the outer side in the workpiece radial direction of the crossover pin 6b and above the lower edge by the second air cylinder 75 in the underline forming process, the wire intermediate part WM is formed. It can be reliably spanned as a crossover so as not to come off from the crossover pin 6b. In addition, when only the work forming the overhanging line is handled, it is easy to replace the nozzle rotation unit 70 with a nozzle rotation unit that does not have the second air cylinder 75 to obtain a winding machine of another specification. it can.

  If the connecting wire inclination angle β is selected according to the shape of the workpiece 6 and the nozzle bracket 60, for example, 5 ° ≦ β ≦ 30 °, the nozzle 6 can use the internal space of the pole C of the workpiece 6 widely. 3 can be positioned sufficiently above the lower edge of the crossover pin 6b. If β <5 °, the tip of the nozzle 3 may not be positioned sufficiently above the lower edge of the connecting wire pin 6b when forming the connecting wire depending on the form of the workpiece 6 or the nozzle bracket 60. On the other hand, when β> 30 °, the nozzle bracket 60 may come into contact with the pole C of the workpiece 6 when forming the underline according to the form of the workpiece 6 or the nozzle bracket 60.

(Example 2)
Next, the operation of the winding machine as Embodiment 2 of the present invention will be described. In the embodiment shown in FIG. 16, in the winding process, the first air cylinder 72 (see FIG. 4) causes the nozzle 3 (nozzle bracket 60) to turn about 90 ° around the rotation shaft 71 (for example, about 110 °). )) And rotated in the opposite direction (for example, clockwise) to change the posture diagonally. That is, in the winding process (FIGS. 9 and 12), the first center line O1 is connected to the connecting wire side end surface (lower end surface; horizontal plane) of the workpiece 6 and the winding inclination angle α corresponding to the connecting wire inclination angle β (for example, (α≈β≈20 °).

  Therefore, in this embodiment, it is not necessary to change the posture of the nozzle 3 (nozzle bracket 60) in the underpass line forming step (FIGS. 10 and 11). In other words, the second air cylinder 75 is not required for the nozzle rotation unit 70, and the structure is simpler. In this embodiment as well, the tip of the nozzle 3 is positioned outside (below) the winding portion (pole C) in the winding process, and the tip of the nozzle 3 is the connecting wire pin in the bottom connecting wire forming step. There is a case where the tip position of the nozzle 3 is finely adjusted between processes so as to be positioned on the outer side in the workpiece radial direction of 6b and above the lower edge (however, the rotation adjustment by the first air cylinder 72 is not necessary). .

(Example 3)
Next, the operation of the winding machine as Embodiment 3 of the present invention will be described. In the embodiment shown in FIG. 17, the nozzle 3 (first center line O1) is attached to the nozzle bracket 60 (nozzle side end 601) in a non-right angle manner. Specifically, the nozzle 3 is attached to the nozzle bracket 60 in a form having an attachment change angle θ1 (for example, θ1≈20 °) (FIG. 17A).

  Accordingly, the posture change from the binding step (FIG. 17A) to the winding step (FIG. 17B) is performed by rotating the nozzle 3 (nozzle bracket 60) by the first air cylinder 72 (see FIG. 4). What is necessary is just to rotate about 90 degrees in the reverse direction (for example, clockwise direction) around the moving shaft 71. Thereby, in the winding process, the first center line O1 corresponds to the connecting wire side end face of the work 6 and the mounting change angle θ1 (and the connecting wire inclination angle β) (for example, α≈β≈θ1≈). 20 degrees) across.

  Therefore, as in the second embodiment, it is not necessary to change the posture of the nozzle 3 (nozzle bracket 60) in the underpass line forming step (FIG. 17C). Two air cylinders 75 are not required. The case where the tip position of the nozzle 3 is finely adjusted between the winding process and the underpass line forming process is the same as in the second embodiment.

Example 4
Next, the operation of the winding machine as Embodiment 4 of the present invention will be described. In the embodiment shown in FIG. 18, the nozzle bracket 60 (nozzle side end 601) is formed in a bent shape. Specifically, the nozzle 3 is attached at right angles to a nozzle bracket 60 having a bending angle θ2 (for example, θ2≈20 °) (FIG. 18A).

  Therefore, similarly to the third embodiment, when the winding inclination angle α is set to be substantially equal to the bending angle θ2 and the connecting wire inclination angle β (for example, α≈β≈θ2≈20 °), the lower connecting wire forming step (FIG. 18). In (c)), it is not necessary to change the posture of the nozzle 3 (nozzle bracket 60).

(Example 5)
Next, the operation of the winding machine as the fifth embodiment of the present invention will be described. In the embodiment shown in FIG. 19, the nozzle 3 (first center line O1) is attached to the nozzle bracket 60 (nozzle side end 601) in a non-right angle manner. Specifically, the nozzle 3 is attached to the nozzle bracket 60 in a form having an attachment change angle θ1 (for example, θ1≈10 °) (FIG. 19A).

  Therefore, in the winding process (FIG. 19B), the nozzle 3 (nozzle bracket 60) is rotated by the first air cylinder 72 (see FIG. 4) from the binding process (FIG. 19A). The posture is changed to a horizontal form by rotating around 90 ° in the opposite direction (for example, clockwise).

  Further, in the underpass line forming step (FIG. 19C), the nozzle 3 (nozzle bracket) is obtained by reducing the second air cylinder 75 (see FIG. 7C) from the winding step (FIG. 19B). 60) is further rotated around the rotation axis 71 in the opposite direction (for example, clockwise) by a predetermined rotation angle (for example, about 30 °) to change the posture obliquely. As a result, the first center line O1 intersects the crossover side end face of the workpiece 6 across a crossover inclination angle β (for example, β≈40 °) corresponding to the sum of the attachment change angle θ1 and the rotation angle. Will do.

  As described above, in this embodiment, the internal space of the pole C of the workpiece 6 is widely used, and the posture change amount (angle) of the nozzle 3 (nozzle bracket 60) between the winding process and the underpass line forming process. Is relatively large. Therefore, even in the case of the workpiece 6 having a relatively large thickness (or the height of the connecting wire pin 6b) compared to the outer diameter (or the inner diameter of the pole C), the tip of the nozzle 3 is connected to the connecting wire pin 6b. It becomes easy to position it above the lower edge.

(Example 6)
Next, the operation of the winding machine as Embodiment 6 of the present invention will be described. In the embodiment shown in FIG. 20, the nozzle 3 (first center line O1) is attached at right angles to a nozzle bracket 60 having a bending angle θ2 (for example, θ2≈10 °) (FIG. 20A). .

  Even in this case, if the posture conversion from the winding process (FIG. 20B) to the underpass line forming process (FIG. 20C) is performed in the same manner as in the fifth embodiment, the first center line O1 is the workpiece 6 The crossover line side end face intersects with a crossover line inclination angle β (for example, β≈40 °) corresponding to the sum of the bending angle θ2 and the rotation angle. Therefore, as in the fifth embodiment, the tip of the nozzle 3 can be used even in the case of the workpiece 6 having a relatively large thickness (or the height of the connecting wire pin 6b) compared to the outer diameter (or the inner diameter of the pole C). It is easy to position the cable above the lower edge of the crossover pin 6b.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and modifications based on knowledge possessed by those skilled in the art are appropriately added without departing from the scope described in each claim. Can do.

For example, the following changes are possible.
(1) About the crossover locking part
In addition to a rod-like (or wire-like) form such as a crossover pin, various forms such as a plate-like (or wall-like) or a tubular (or tubular) can be adopted.
-For example, when winding with a continuous wire for each phase like a three-phase motor armature, a crossover locking portion may be formed across a plurality of poles.
(2) Although only the case of having a nozzle rotation unit has been described, the present invention can also be applied to a type of winding machine that does not have a nozzle rotation unit.
(3) A line processing state (process) such as binding can be appropriately added as required, such as the form of the workpiece.
(4) In the first embodiment, the fifth embodiment, and the sixth embodiment, in addition to the two-position switching type first air cylinder 72 (see FIG. 4) for changing the posture between the binding state and the winding state, the winding A two-position switching type second air cylinder 75 (see FIG. 7) is provided so that the line inclination angle α <the connecting line inclination angle β. However, if the first air cylinder 72 is a three-position switching type in which the first air cylinder 72 is in a tangled state, a wound state, and a lower crossover line formed state, the second air cylinder 75 may not be provided. Similarly, when a rotary drive source such as a stepping motor is used as the rotary shaft drive actuator, the holder drive actuator is not required if it can be stopped at least at the three positions.

The side view of the winding machine as Example 1 of the present invention. The front view of the winding machine of FIG. The top view of the winding machine of FIG. The top view and front view of a nozzle rotation unit with which the winding machine of FIG. 1 is mounted | worn. The side view and rear view of the nozzle rotation unit of FIG. The perspective view explaining the action | operation of a nozzle bracket. The front view explaining the action | operation of a nozzle bracket. The partial cross section front view explaining the action | operation of the winding machine which concerns on Example 1. FIG. The top view explaining the operation | movement following FIG. 8, and a partial cross section front view. FIG. 10 is a partial perspective plan view and a partial cross-sectional front view for explaining the operation following FIG. 9. FIG. 11 is a partial perspective plan view and a partial cross-sectional front view for explaining the operation following FIG. 10. FIG. 12 is a partial perspective plan view and a partial cross-sectional front view for explaining the operation following FIG. 11. Explanatory drawing of a nozzle and a workpiece | work in a coil | winding process. Operation | movement explanatory drawing following FIG. Explanatory drawing following FIG. The perspective view explaining the action | operation of the winding machine as Example 2 of this invention. The front view explaining the action | operation of the winding machine as Example 3 of this invention. The front view explaining the action | operation of the winding machine as Example 4 of this invention. The front view explaining the action | operation of the winding machine as Example 5 of this invention. The front view explaining the action | operation of the winding machine as Example 6 of this invention.

Explanation of symbols

3 Nozzle (first member)
6 Workpiece (second member)
6b Crossover pin (crossover locking part)
6c Yoke part 60 Nozzle bracket (nozzle holder)
601 Nozzle side end portion 602 Rotation shaft side end portion 603 Direction changing portion 61 First shaft hole 62 Second shaft hole 70 Nozzle rotation unit 71 Rotation shaft 72 First air cylinder (actuator for rotation shaft drive)
75 2nd air cylinder (actuator for holding fixture drive)
100 Winding machine C pole N gap (slot)
W wire rod WM wire rod intermediate part O1 1st center line (nozzle center line)
O2 2nd center line (center line of rotation axis)

Claims (2)

A workpiece having a plurality of poles projecting radially inward from a yoke part forming a ring-shaped outer periphery, and a crossover locking part formed on a crossover side end face which is one end face of the yoke part, and the yoke nozzles for holding the wire for the coil formed from the other end face side of the parts is supplied toward the radially inward and into the outside, respectively Oite are relatively movable in the circumferential direction and the thickness direction of the workpiece, these A winding state in which the wire rod is wound around each pole of the workpiece by relative movement of the workpiece and the nozzle, and a wire intermediate portion that is a midway portion of the wire other than the winding portion wound around the pole, Used in a winding machine that is used to switch to a crossover formation state that crosses as a crossover that is locked around the stop,
A rotating end that is attached to a rotating shaft that extends in a predetermined direction from a nozzle side end portion, which is one end portion to which the nozzle is attached, passes through a direction changing portion, and is arranged in parallel with the crossover side end surface. A nozzle holder that exhibits a gate shape that reaches the end of the moving shaft, and that the center line of the nozzle and the center line of the rotating shaft are substantially orthogonal to each other on a projection plane parallel to both center lines,
The nozzle attached to the nozzle side end of the nozzle holder;
The rotating shaft attached to the rotating shaft side end of the nozzle holder so as to be relatively rotatable;
A rotary shaft drive actuator for rotationally driving the rotary shaft;
A holder driving actuator that is fixed to the rotating shaft so as not to rotate relative to the rotating shaft, and that rotates the nozzle holder around the rotating shaft;
In the winding state, the rotation shaft driving actuator is driven, and the center line of the nozzle is substantially parallel to the crossover side end surface or intersects with a predetermined winding inclination angle around the rotation axis. The tip of the nozzle is positioned outside the winding portion and moves relative to the circumferential direction and the thickness direction of the workpiece, and winds the wire.
In the crossover formation state, the retainer driving actuator is driven, and the rotation is performed so that the centerline of the nozzle intersects the crossover side end face across the crossover inclination angle larger than the winding inclination angle. By rotating around the axis, the tip end of the nozzle is positioned on the outer side in the workpiece radial direction of the crossover locking portion and on the inner side with respect to the outer edge in the workpiece thickness direction, and relatively moves in the workpiece circumferential direction. A nozzle rotation unit characterized in that the wire intermediate part is stretched over a wire locking part as a crossover. The rotation shaft is attached to the rotation shaft side end portion of the nozzle holder so as to be relatively rotatable so that the center line thereof is horizontally disposed,
The nozzle, as its center line is disposed horizontally in the winding condition, the nozzle rotating unit according to claim 1 which is secured to the nozzle end of the nozzle holder.

Images