JP2007221923A - Winding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding machine capable of attaining reductions in size and weight, energy saving, a simple structure, reducing problems of wear and maintenance, a long service life, reduction in oscillation and noise, highly accurate normal winding and further higher speed winding than conventional winding. <P>SOLUTION: An eccentric shaft 14 is provided at a position eccentric to a driving shaft 5, and one edge of a rod 2 is jointed with the eccentric shaft 14. The intermediate portion of the rod 2 is guided by a guide 3 formed so as to rotate freely and reciprocate freely, and a nozzle 1 for leading through a wire for winding is provided on the other edge of the rod 2. When a driving shaft 5 is rotated by a driving shaft motor 8, the rod 2 oscillates by the crank motion of the eccentric shaft 14 through the guide 3, and the nozzle 1 performs winding, drawing a roughly ellipse track. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a winding machine for forming a coil by winding a wire around a wound body such as an iron core (core) of an electric motor.

In order to wind the wound part (magnetic pole, etc.) provided on the inner circumference side of the annular or cylindrical iron core, the wire lead-out part (nozzle, etc.) is pierced inside the iron core. It is necessary to do.
Further, even when a wound portion is provided on the outer periphery instead of the inner periphery of the iron core, or in the case of a so-called expanded core or divided core in which a cylindrical iron core is expanded or divided into a flat surface, Since the winding part is formed in a rectangular shape or the interval between adjacent winding parts is narrow, there are cases where the nozzle interferes with the adjacent winding part if the winding is performed with a circular locus.
In order to perform winding on such an iron core, it is necessary to perform winding with a locus other than a circular locus such as an ellipse, an ellipse, a rectangle, or the like.
Conventionally, the following winding machines are known as this type of winding machine.

The winding machine according to Patent Document 1 is configured such that the winding has a substantially rectangular locus by causing the main shaft to repeatedly perform the ascending, forward rotation, lowering, and reverse rotation operations sequentially.
The winding machine according to Patent Document 2 also moves the nozzle in the longitudinal direction of the magnetic pole, and when the nozzle comes out of the iron core, the nozzle or the iron core is rotated so that the nozzle is positioned on the opposite side of the magnetic pole. Is configured to perform a winding operation.
The winding machine according to Patent Document 3 is configured to perform a winding operation by rotating a nozzle by a parallel crank mechanism.
The winding machine according to Patent Document 4 includes a cam, an arm, and a link, and the nozzle is configured to draw a substantially rectangular locus.
JP S60-257747 Patent 3414958 Patent 3628216 Patent 3354462

Since the winding machines according to Patent Document 1 and Patent Document 2 perform winding by combining linear motion and rocking motion, it is difficult to wind the winding around the base portion of the magnetic pole.

As in the winding machines according to Patent Document 1 and Patent Document 2, in the case of forming a substantially rectangular winding motion by a combination of operations in two directions, tension is applied to the winding when the driving direction is switched. It is difficult to roll up because it cannot be done, and it is difficult to perform aligned winding.
Further, since the moving speed must be zero at the point where the moving direction is switched, the winding speed is inferior to the method in which the locus becomes a circle, an ellipse, an ellipse or other curves.
In addition, vibration and noise are likely to occur due to rapid reciprocation.
In order to suppress this vibration, a certain amount of machine weight must be given, and the equipment cannot be reduced in size and weight.
In addition, the drive motor is large and requires a large capacity, which is against the demand for downsizing and energy saving of equipment.

The winding machine according to Patent Document 3 has a very complicated mechanism because of the use of a parallel crank.
In addition, the nozzle holder portion tends to be long and the vibration becomes large, and it is difficult to perform high-precision adjustment that causes aligned winding.

The winding machine according to Patent Document 4 is severely worn by the cam follower and the sliding surface of the cam and the linear guide, and cannot withstand long-term use.
Also, if the wear is to be avoided, the rotational speed of the cam cannot be increased, and it cannot be wound at a high speed.
In addition, vibration is likely to occur due to the eccentricity of the cam, and in order to suppress this vibration, a certain amount of machine weight must be given, and the equipment cannot be reduced in size and weight.
In addition, the production and maintenance of the cam is very expensive.

In light of this situation, the present invention is compact, lightweight, energy-saving, has a simple structure, has few problems of wear and maintenance, has a long life, has little vibration and noise, and can perform highly accurate aligned winding, and moreover than the conventional one. An object of the present invention is to provide a winding machine capable of winding at a remarkably high speed.

The above object can be achieved by attaching a winding material lead-out portion to the swing slider crank mechanism and performing winding by swinging motion.

A drive shaft; a first support portion that rotatably supports the rocker at a position eccentric to the drive shaft; and a rocker supported by the first support portion and the second support portion. This can be achieved by including a second support part that supports the oscillator in a swingable manner and a wire rod outlet part that is provided in the oscillator and that leads out the wire.

A drive shaft; a first support portion that rotatably supports the rocker at a position eccentric to the drive shaft; and a rocker supported by the first support portion and the second support portion. A second support part that reciprocally supports the oscillator, a third support part that rotatably supports the second support part, and a wire rod outlet part that is provided on the oscillator and that leads out the wire. This can be achieved.

A drive shaft; a first support portion that rotatably supports the rocker at a position eccentric to the drive shaft; and a rocker supported by the first support portion and the second support portion. A second support part that rotatably supports the oscillator, a third support part that supports the second support part in a reciprocating manner, and a wire rod outlet part that is provided in the oscillator and that leads out the wire. This can be achieved.

Further, the drive shaft, a first support portion that rotatably supports one end of the oscillator at a position eccentric with respect to the drive shaft, and a swing supported by the first support portion and the second support portion. This can be achieved by including a child, a second support portion that supports the middle of the rocker so as to be rockable, and a wire rod lead-out portion that is provided at the other end of the rocker and leads out the wire.

Further, the drive shaft, a first support portion that rotatably supports one end of the oscillator at a position eccentric with respect to the drive shaft, and a swing supported by the first support portion and the second support portion. This can be achieved by including a child, a second support part that supports the other end of the oscillator in a swingable manner, and a wire rod outlet part that is provided in the middle of the oscillator and that leads out the wire.

In addition, the drive shaft, a first support portion that rotatably supports the middle of the oscillator at a position eccentric with respect to the drive shaft, and a swing supported by the first support portion and the second support portion. This can be achieved by including a moving element, a second support part that supports one end of the oscillator so as to be able to swing, and a wire rod outlet part that is provided at the other end of the oscillator and that leads out the wire.

According to the present invention, when the drive shaft is rotated by the drive source, the first support portion performs a crank motion, and an oscillator (for example, a rod or the like) that transmits the crank motion is a second support portion (so-called slider). ), The wire rod lead-out portion provided on the oscillator performs a swinging movement from a circular shape to a rod-like or elliptical locus. Winding can be performed along such a locus.

(1) Unlike the winding machines according to Patent Documents 1 and 2, since the nozzle rotates in parallel with the magnetic poles instead of being arcuate, it can be wound up to the base part of the magnetic poles.
(2) Since the locus of the winding is not a rectangular shape but a shape close to an ellipse, tension can be continuously applied to the wire during the period of one rotation of the nozzle.
For this reason, since there is no slack of a wire and winding does not collapse, favorable alignment winding can be performed.
(3) Since the locus is close to an ellipse and there is no sudden acceleration / deceleration in the vertical and horizontal directions as in the case of winding in a rectangular shape, there is little vibration.
Moreover, since time is not taken for acceleration / deceleration, it can wind at high speed.

(4) The shape of the winding locus can be changed by changing the length of the crank, the length of the rocker, the position for supporting the rocker, the mounting position of the nozzle, and the like. For this reason, it is possible to wind around the winding part of various shapes.
(5) The mechanism is simple and easy to adjust compared to the case of using a cam or the like.
Since the oscillator is short, there is little vibration and high-precision aligned winding can be performed.
(6) Since there are few wear parts compared with the case where a cam etc. are used, the burden of a maintenance is also few and it is long life.
Since the movable portion is small and light and has little friction, winding can be performed at a much higher speed than when a cam or the like is used.
(7) It can be much smaller and lighter than a cam or the like.
Since motors with small capacities can be used, the overall equipment can be significantly reduced in size and weight and energy can be saved.

(8) Since there is little vibration, there is little need to add extra machine weight or to take measures against vibration and noise to suppress vibration.
(9) Because of its small size and light weight, the winding mechanism can be unitized and placed vertically, horizontally, or in addition to being placed on top, so it has a high degree of freedom in machine design and has excellent operability and maintenance. It can be.
(10) Not only an inner core but also an outer core, a development core, and a split core winding can be applied.

Hereinafter, specific embodiments of the present invention will be described.
The drive source of the drive shaft is a rotary actuator.
Various actuators such as a pneumatic actuator and an electric actuator can be applied to this, but it is preferable in terms of controllability to use an electric motor (motor).
Among the electric motors, it is particularly preferable to use a servo motor in order to synchronize with the traverse motion.
Note that the drive shaft and the traverse shaft may be mechanically synchronized instead of electrically.
Moreover, you may interpose a belt, a pulley, a gear, a shaft, a coupling, etc. between a drive source and a drive shaft as needed.

The drive shaft transmits power from the drive source, and is preferably supported by a bearing such as a bearing or an oil-free bush so that it can rotate smoothly.
As the drive shaft, a shaft that is a mechanical output of an electric motor that is a drive source may be used as it is.

The first support portion supports the oscillator at a position eccentric with respect to the drive shaft.
This constitutes the crank.
The first support portion is provided at a position eccentric with respect to the crank member that rotates by a driving force from the drive shaft and is eccentric to the drive shaft on the crank member, and is a connection that rotatably connects the crank member and the oscillator. It is good to comprise with a member.
The crank member may take any form such as a disk shape (for example, a crank plate) or an arm shape (for example, a crank arm).
The crank member can be manufactured separately from the drive shaft, but can also be manufactured integrally with the drive shaft, and further integrated with a connecting member (for example, a pin, a shaft, etc.) described later. You may make it as a thing.

The connecting member that connects the crank member and the swing member may be, for example, a loose fit between the crank member and the swing member by a crank pin, but is preferably constituted by a shaft (eccentric shaft) and a bearing.
As the bearing, it is particularly preferable to use a bearing, an oil-free bush, or the like, but a fluid bearing can also be used.
The crank pin or the eccentric shaft may be fixed to the crank member side so that the rocker side rotates, or may be fixed to the rocker side and the crank member side may rotate.

The oscillator is supported by the first support part and the second support part, and changes the rotational motion of the drive shaft to the swing motion.
The second support part supports the oscillator so as to be able to swing.
By supporting the oscillator so as to be free in the rotational direction (direction in which the oscillator rotates) and the reciprocating direction, the oscillator can be supported so as to be able to swing.

The oscillator and the second support portion can take various embodiments depending on the combination of both members.
For example, the oscillator has a shaft shape, and is preferably hardened by using hardenable steel, stainless steel or the like to increase the hardness and finish smoothly.
That is, the oscillator itself has a part of the function as a slider.
The second support unit combined therewith supports the oscillator freely in a reciprocating direction by a slide support member such as a linear bush or an oilless bush, and further supports the slide support member by a shaft and a bearing or an oilless bush. It is good to make it support rotatably by the rotation support member which becomes.

Further, for example, all or a part of a slide support member such as a ball spline, a slide guide, or a slide table is used as a part or all of the oscillator, and the remaining part is used as a part of the second support part. It is preferable to support it freely in the direction and to support it rotatably by a rotation support member.

On the contrary, the second support portion may be configured to support the swinging member rotatably by the rotation support member, and to further support the rotation support member reciprocally by the slide support member.

Further, for example, a long hole may be provided in the plate-like oscillator itself, and the second support portion may be configured by fixing the long hole with a pin.
In this case, it can reciprocate in the direction of the long hole and can rotate in the outer peripheral direction of the pin.
Conversely, a long hole may be provided on the second support portion side so that the oscillator is pinned.

The wire rod lead-out portion is provided in the oscillator, and leads the wire rod and winds it around the wound body.
As the wire lead-out portion, a member that does not cause interference even if the portions to be wound are narrow and can reach the base of the portion to be wound is necessary, and it is particularly preferable to use a nozzle.

The first support portion, the second support portion, and the wire rod lead-out portion can be freely arranged depending on the application.
For example, the first support portion, the second support portion, and the wire rod lead-out portion may be arranged in this order with respect to the oscillator.
In this case, since the wire lead-out portion is placed at one end of the oscillator, it is easy to allow the wire lead-out portion to pierce the inner periphery of the annular core, which is particularly useful for winding the inner rotor core. is there. Needless to say, the present invention can also be applied to windings such as an outer rotor and a deployment core.

Moreover, you may make it arrange | position these in order of a 1st support part, a 2nd support part, and a wire rod derivation | leading-out part.
In this case, it is particularly useful for winding the developed core and the outer rotor type core.

Furthermore, you may make it arrange | position in order of a 2nd support part, a 1st support part, and a wire derivation | leading-out part.
In this case, the wire lead-out portion is placed at one end of the oscillator, so that it is particularly useful as an inner rotor core winding machine. Needless to say, the present invention can also be applied to windings such as an outer rotor and a deployment core.
In any of these arrangements, the excellent effects of the present invention such as small and light weight, high speed rotation, energy saving, low vibration / low noise, and high precision aligned winding can be achieved.

In addition to the magnetic poles provided on the iron core made of laminated steel, ferrite, etc., for example, bobbins, insulators, etc., coil shaping jigs (winding coils) It may be used as a core for manufacturing the air-core coil by removing the coil from the coil after the coil is formed.
In addition to the winding body provided with the winding part on the inner periphery of the annular or cylindrical iron core, the winding body is provided with the winding part provided on the outer periphery of the iron core, or the cylindrical iron core is planar. It may be a so-called developed core or divided core that is expanded into two or divided into a plurality of members.

1 and 2 are views showing a first embodiment of a winding machine according to the present invention and showing a part of a winding unit.
FIG. 1 is a side view thereof, and FIG. 2 is a front view thereof.
In FIG. 1, a drive shaft motor 8 is an AC servo motor whose position is controlled by a rotary encoder.
The drive shaft 5 transmits the rotation of the drive shaft motor 8 and is rotatably supported by the bearing 6.
An eccentric shaft 14 is provided at a position eccentric to the drive shaft at the tip of the drive shaft, and constitutes a crank portion.
One end of the rod 2 is connected to the eccentric shaft 14 by a bearing 7.

The center of the rod 2 is supported in a reciprocating manner by a guide 3 made of an oil-free bush.
A shaft 16 is further joined to the guide 3, and the shaft 16 is rotatably supported by the bearing 4.
The slider part is comprised by these, and the rod 2 is supported by the slider part so that rocking | fluctuation is possible.
As described above, the swing slider crank mechanism is configured by the crank portion, the rod 2 (swinger), and the slider portion.
A nozzle 1 is provided at the other end of the rod 2.
That is, one end of the rod 2 is supported by the crank portion, the middle of the rod 2 is supported by the slider portion, and a nozzle is placed at the other end of the rod 2.
A wire is drawn from the tip of the nozzle and wound.

In FIG. 1, when the drive shaft motor 8 rotates, the eccentric shaft 14 performs a crank motion via the drive shaft 5.
This movement is transmitted to one end of the rod 2, and the rod 2 is supported by a slider portion so that it can swing in the middle.
For this reason, the nozzle 1 placed at the tip of the rod 2 draws a locus close to a rice ball shape or an ellipse shape as shown in FIG.
Thereby, winding can be performed to a to-be-winded part with this locus.

3 and 4 show another embodiment of the present invention and show a part of a winding unit.
3 is a side view thereof, and FIG. 4 is a front view thereof.
Most of them are the same as those in the first embodiment, and therefore, the description of overlapping portions is omitted. Unlike the first embodiment, the nozzle 1 is placed in the middle of the rod 2 and the slider portion is the end of the rod 2. Is placed in.
That is, one end of the rod 2 is supported by the crank portion, the other end of the rod 2 is supported by the slider portion, and the nozzle is placed in the middle of the rod 2.
As a result, the locus drawn by the nozzle becomes a locus close to a rice ball shape or an ellipse as in the first embodiment, and winding can be performed on the winding portion along such a locus.

5 and 6 show another embodiment of the present invention and show a part of a winding unit.
5 is a side view thereof, and FIG. 6 is a front view thereof.
Since most of them are the same as in the first embodiment, the description of overlapping portions is omitted, but unlike the first embodiment, the positional relationship between the crank portion and the slider portion is reversed.
That is, one end of the rod 2 is supported by the slider portion, the middle of the rod 2 is supported by the crank portion, and a nozzle is placed at the other end of the rod 2.
As a result, the locus drawn by the nozzle becomes a locus close to a rice ball shape or an ellipse as in the first embodiment, and winding can be performed on the winding portion along such a locus.

FIG. 7 shows an embodiment in which the present invention is applied to a winding machine that performs winding on an inner rotor type iron core.
In addition to the winding unit shown in FIGS. 1 and 2, a traverse mechanism, an index mechanism, a wire rod supply mechanism, a wire rod operation mechanism, and the like are provided.
The traverse mechanism includes a traverse motor 25, an actuator 24, and the like.
The traverse motor 25 is an AC servomotor whose position is controlled by a rotary encoder.
The actuator 24 is constituted by a ball screw or the like (not shown), and receives the shaft output of the traverse motor 25 to move the base 23 in the horizontal direction from side to side.
.

The index mechanism includes a base 23, an index motor (not shown), a chuck 22, and the like.
The index motor is an AC servo motor whose position is controlled by a rotary encoder.
The chuck 22 holds and fixes the iron core 21 that is a wound body.
The chuck 22 is rotated by an index motor (not shown) so that one of the magnetic poles provided on the inner periphery of the iron core 21 faces the nozzle 1 (index operation).
FIG. 8 shows this state.

A wire rod processing mechanism (not shown) processes the crossover wires so that the wire rods do not cross the magnetic poles during the index operation.

A wire rod supply mechanism (not shown) supplies a wire rod (wire) wound around an iron core to the nozzle 1, and includes a tension device (not shown), a pulley (not shown), and the like.
A tension device (not shown) applies tension to the wire, and includes a guide or pulley that passes the wire, a brake unit that applies tension to the wire by mechanical friction, magnetic friction, and the like, a spring, and a string (string).
The wire passing through the tip of the nozzle 1 is held by a wire cutter (not shown) (having a function of holding the wire as well as a function of cutting the wire).

Prior to starting the winding operation, the operator sets the annular iron core 21 on the chuck 22.
When a start button (not shown) is pressed, the traverse motor 25 is rotated by a command from a controller (not shown), the base 23 is moved in the horizontal direction, and the tip of the nozzle 1 reaches the base position of the magnetic pole of the iron core 21.
Next, the winding unit is lowered by a lifting mechanism (not shown), and the nozzle 1 is pierced into the inner periphery of the iron core 21.

Then, the drive shaft motor 8 is rotated.
As already described in the description of the first embodiment, when the drive shaft motor 8 rotates, the rod 2 swings, and as a result, the nozzle 1 placed at the tip of the rod 2 is shaped like a rice ball or an ellipse. Draw a close trajectory.
In this way, the nozzle 1 rotates around the magnetic pole on the inner periphery of the iron core 21, and the wire is wound around the outer periphery of the magnetic pole.

Further, in synchronization with the rotation of the drive shaft motor 8, the traverse motor 25 rotates by an amount proportional to the rotation of the drive shaft motor 8, and the nozzle also moves in the traverse direction.
As a result, the wires are wound in an aligned manner from the base position of the magnetic pole to the direction of the tip of the magnetic pole (the direction of the center of the iron core) so as not to overlap.
When winding up to the tip of the magnetic pole, the traversing direction of the traverse is turned back while maintaining the rotation of the drive shaft as it is, and this time it winds toward the base of the magnetic pole.
In this way, aligned winding is achieved.

When the winding of one magnetic pole is completed, the winding unit is raised by a lifting mechanism (not shown), and a wire operating mechanism (not shown) hooks the wire and moves the wire to the crossing position. And the iron core 21 is rotated until the nozzle 1 comes to a position facing the next magnetic pole.
Repeat the above to wind all the magnetic poles.

The present invention can be variously applied and modified in addition to the above embodiments.
The present invention is not limited to the inner rotor type iron core, but can be wound on various wound bodies such as an outer rotor type, a development core, and a split core.
For example, taking advantage of the feature that the trajectory has a shape similar to a rice ball shape or an ellipse shape, the magnetic pole may be used for a winding such as a developed core having a rectangular shape.
In this case, it suffices if the longitudinal direction of the locus coincides with the longitudinal direction of the magnetic pole.

In the above embodiment, the winding unit is placed vertically, but the present invention is not limited to this, and it can be freely placed such as placed horizontally, placed on top, etc. by taking advantage of its small size and light weight.
In the above embodiment, the amount of eccentricity, the rod length, the support position, etc. are fixed, but a mechanism for changing the amount of eccentricity of the crank, a mechanism for changing the rocking support position of the rod, a mechanism for changing the fixed position of the nozzle, etc. are provided. Further, it may be configured to be able to flexibly cope with variously shaped iron cores.

As the traverse motor 25, the index motor (not shown), and the drive shaft motor 8, for example, stepping motors can be used.

The present invention is extremely useful for winding a coil around an iron core in the manufacturing process of an electric motor (motor) or the like.

Side view of Example 1 Front view of Example 1 Side view of Example 2 Front view of Example 2 Side view of Example 3 Front view of Example 3 The figure showing Example 4 Diagram showing the relationship between iron core and nozzle

Explanation of symbols

1 Nozzle 2 Rod 3 Guide 4 Bearing 5 Drive shaft 6 Bearing 7 Bearing 8 Drive shaft motor 12 Hexagon socket set screw 13 Bearing nut 14 Eccentric shaft 15 Shaft collar 16 Shaft 21 Iron core 22 Chuck 23 Base 24 Actuator 25 Traverse motor

Claims (4)

A winding machine in which a winding material lead-out portion is attached to an oscillating slider crank mechanism, and winding is performed by oscillating motion. A drive shaft, a first support portion that rotatably supports the rocker at a position eccentric to the drive shaft, a rocker supported by the first support portion and the second support portion, A winding machine comprising: a second support part that supports a moving part so as to be swingable; and a wire rod lead-out part that is provided on the swinger and leads out a wire. A drive shaft, a first support portion that rotatably supports the rocker at a position eccentric to the drive shaft, a rocker supported by the first support portion and the second support portion, A second support portion that reciprocally supports the moving element; a third support portion that rotatably supports the second support portion; and a wire rod lead-out portion that is provided on the oscillator and leads out the wire rod. Winding machine. A drive shaft, a first support portion that rotatably supports the rocker at a position eccentric to the drive shaft, a rocker supported by the first support portion and the second support portion, A second support portion that rotatably supports the moving element; a third support portion that reciprocally supports the second support portion; and a wire rod lead-out portion that is provided on the oscillator and leads out the wire rod. Winding machine that becomes.

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