JPH07122452A - Coil winder - Google Patents

Abstract

PURPOSE:To obtain a coil winder suitable for a winding work, in which a plurality of wire materials are simultaneously used, by a method wherein an opening part, which keeps the plurality of the wire materials in a prescribed parallel state and feeds out simultaneously the wire materials, is formed at the exit of a nozzle. CONSTITUTION:A nozzle 13 is made to support by the point of an arm 7 via a nozzle inverting cylinder 14 and a bracket 15. The nozzle 13 is rotated in the extent of about 90 degrees in the direction shown by the arrow. The base end of the nozzle 13 is formed into a circular section and the nozzle 13 is branched into two small-diameter tubes 13A formed in parallel at its point. Two wire materials led from the base end of the nozzle are made to penetrate in these tubes 13A one by one and are made to feed out from the tubes 13A according to their tension. Moreover, a wire press jig, which holds temporarily the wire materials fed from the nozzle 13 on the outer periphery of a bobbin, is provided and at the same time, grooves, which guide a plurality of wire materials in a parallel state in roughly a right-angled direction to the direction of a winding of the bobbin, are formed in this wire press jig.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a coil winding machine for winding a coil.

[0002]

2. Description of the Related Art A coil winding machine for winding a coil is constructed, for example, to wind a wire rod around a bobbin body by rotating the bobbin while feeding the wire rod from a nozzle.

At the beginning and the end of winding of the wire, the wire is entwined and locked to terminals provided on the end surface of the bobbin. A lead wire from the terminal to the winding portion or from the winding portion to the terminal is guided substantially parallel to the central axis of the bobbin and is bent at about 90 degrees with respect to the winding portion. In order to form this bent portion, for example, a wire retainer that temporarily presses the wire rod against the bobbin body is used. That is, hold the wire rod that is guided from the terminal to the bobbin body parallel to the bobbin center axis with this wire retainer, move the nozzle along the outer periphery of the bobbin, and press the wire rod retainer to the portion held by the wire retainer. A refraction portion is formed between the guided portion. The bent portion formed in this manner is locked to the body portion with a tape, or is locked to the body portion by the bent wire rod going around the bobbin body portion.

[0004]

By the way, there is a coil in which a plurality of thin wires are wound around a bobbin in parallel like a litz wire instead of winding one thick wire around the bobbin for reasons of high frequency characteristics and pressure resistance. Even if you try to wind such a coil with multiple nozzles on a wire winding machine, it is difficult to wind the wires supplied from these nozzles on the bobbin while maintaining the parallel state. There was a tendency that the wire rod was twisted, and one wire rod climbed on the other wire rod. Further, in the bending portion of the wire between the winding wire and the lead wire, it becomes more difficult to maintain the wires in parallel.

Such twisting or overlapping of wire rods is not preferable because it causes winding disorder and wire breakage, but the above winding machine cannot avoid these phenomena.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a winding machine suitable for a winding operation in which a plurality of wire rods are simultaneously used.

[0007]

SUMMARY OF THE INVENTION The present invention is a coil winding machine for winding a wire on a bobbin using a spindle for rotating the bobbin and a nozzle for supplying the wire to the bobbin. An opening is formed at the outlet of the nozzle, which maintains the state and sends out simultaneously.

To this end, for example, a plurality of openings for sending the wire rods are provided in parallel at the nozzle outlets. Alternatively, the nozzle outlet is provided with a single opening having an oval cross section that matches the dimensions of the wire rod cross sections in the parallel state.

The present invention also includes a nozzle swivel mechanism that swivels the nozzle about the central axis of the nozzle.

The present invention further comprises a wire retainer for temporarily holding the wire rod supplied from the nozzle on the outer periphery of the bobbin, and a plurality of wire rods are arranged in parallel with the wire retainer in the winding direction of the bobbin. To form a groove that guides in a substantially perpendicular direction.

Further, according to the present invention, another groove is formed on the wire retainer so as to guide the wire material in a parallel state in a direction substantially perpendicular to the groove.

[0012]

By operating a plurality of wires at the same time with the nozzle openings kept in a predetermined parallel state, the wires can be easily wound in parallel.

By rotating the nozzle about the central axis of the nozzle, it is possible to feed the wire material in parallel in the winding direction as well as in the direction of the lead wire perpendicular to the winding wire.

Further, by holding the wire rod on the bobbin with the wire retainer having the guide groove, it is possible to reliably maintain the parallel state of the wire rod at the bending portion of the wire rod formed between the winding wire and the lead wire. .

[0015]

1 to 10 show an embodiment of the present invention.

FIG. 1 shows an automatic winding machine which receives a bobbin 3 carried on a base 1 by a conveyor 2 to perform a winding work, and transfers the bobbin 3 to the conveyor 2 again after the winding is completed. The bobbin 3 is transferred to the conveyor 2 via the transfer jig 2B.

The winding machine comprises a spindle 4 on which a bobbin 3 is mounted for winding work. The spindle 4 is coupled to a motor (not shown) built in a support 5 fixed to the base 1. The bobbin 3 is mounted on the spindle 4 via the insertion jig 3C. On both sides of the support portion 5, arms 6 and 7 equipped with moving devices in three axial directions are provided.

The moving device for the arm 6 comprises an X-axis motor 8, a Y-axis motor 9 and a Z-axis motor 10. This moving device moves the arm 6 relative to the base 1 in a three-dimensional direction. Further, the arm 7 is also arbitrarily moved in the three-dimensional direction by the same X-axis motor 11, Y-axis motor and Z-axis motor 12 not shown.

As shown in FIG. 2, a nozzle 13 is supported at the tip of the arm 7 through a nozzle reversing cylinder 14 and a bracket 15. The nozzle reversing cylinder 14 is a rotary actuator that operates by air pressure, has a rotation axis parallel to the Y axis in FIG. 1, and rotates the nozzle 13 in the range of approximately 90 degrees in the direction indicated by the arrow in FIG. The arm 7 is provided with stoppers 50 and 51 for restricting this rotation of the nozzle 13 in the vertical position and the horizontal position, respectively. The nozzle 13 is rotatably supported by the bracket 15 and is rotatably driven by the slewing actuator 52 through the pulleys 54 and 55 and the belt 53, and the nozzle 13 is approximately 90 ° about the central axis.
Turn within a range of degrees.

The base end of the nozzle 13 is formed in a circular cross section as shown in FIG. 3, and is branched at its tip into two parallel small diameter tubes 13A. Then, each of the two wire rods guided from the base end penetrates each of these small-diameter pipes 13A and is sent out according to the tension. As shown in FIG. 4, instead of the small diameter pipe 13A, a variable diameter pipe 13B having an oval cross section having a size that allows the wire rod to pass while maintaining the parallel state at the tip of the nozzle 13 may be used.

A nipper cutter 16 for cutting a wire is attached to the bracket 15 on the side of the nozzle 13 for nipper upper and lower cylinders 1.
It is attached via 7.

On the other hand, as shown in FIG. 5, the arm 6 is provided with a wire pressing member 18 and a throwing tie pin 19 as auxiliary tools near the base end. The wire retainer 18 is an arm-shaped member that projects in the horizontal direction toward the bobbin 3, is supported by the arm 6 via an elevating cylinder 59, and moves up and down in response to the drive of the elevating cylinder 59.

The tip of the wire retainer 18 is formed in a shape as shown in FIG. That is, the downwardly projecting portion 56 is provided, and the groove 5 having a notch shape in the transverse direction is provided at the front end and the rear end of the projecting portion 56.
7 and 58 are formed. The grooves 57 and 58 have a depth approximately equal to the thickness of the wire and a width approximately equal to the width of the two wires lined up. The width of the groove 58 may be set to be equal to or more than the width of two wires.

The throw-away entanglement pin 19 is a columnar member protruding upward and has a V-shaped notch for entanglement of the wire rod at the upper end. In addition, a ring-shaped wire discharge mechanism 22 is fitted to the outer periphery of the throw-away entanglement pin 19 in order to remove the cut end of the wire rod captured by the cut. The wire discharging mechanism 22 is coupled to the lifting cylinder 59, and is driven integrally with the wire pressing tool 18 by driving the lifting cylinder 59, and the discarding pin 19
Slide along.

A bobbin transfer jig 20 is supported on the tip of the arm 6 as an auxiliary tool via a jig reversing cylinder 21.

The jig reversing cylinder 21 is a rotary actuator that operates pneumatically, has a rotary shaft parallel to the Y-axis of FIG. 1, and moves the bobbin transfer jig 20 in the range of about 90 degrees in the direction shown by the arrow in FIG. Rotate with.

The bobbin transfer jig 20 has a substantially L-shaped cross section, and the tip portion bent at 90 degrees is formed into a substantially U-shaped fork shape, and this tip portion is formed on the insertion jig 3C of the bobbin 3. The bobbin 3 is held by being fitted in the annular groove 3A, and the bobbin 3 is rotated between the vertical position and the horizontal position shown in FIG. 5 according to the rotation of the jig reversing cylinder 21. In addition,
The bobbin 3 is provided at one end with two terminals 3B as shown in FIG. 5, which entangle the wire rod at the beginning and end of winding.

On the supporting portion 5, a bending portion of the wire is formed on the bobbin 3.
A partially fixing taping unit 36 for locking the body portion 3E is provided.

The taping unit 36 for partial fixing is shown in FIG.
As shown in FIG.
It is composed mainly of. The support plate 37 has a tape reel 38 around which an adhesive tape 46 is wound and a roller 3 for feeding the tape.
9 is attached, and the chuck 42 is supported in front of the support plate 37 via a horizontal telescopic cylinder 40 and a vertical telescopic cylinder 41 supported by the horizontal telescopic cylinder 40. With the telescopic cylinders 40 and 41, the chuck 42 is moved to the Z position shown in FIG.
Move along axis and X axis. The chuck 42 opens and closes in response to the driving of the open / close cylinder 48, and holds the end portion of the tape 46 sent from the tape reel 38 via the roller 39. The tape 46 is set on the tape reel 38 so that the adhesive surface faces downward.

A cutter 43 and a tape retainer 44 are movably supported at the tip of the support plate 37 on the side of the chuck 42 so as to be movable in the vertical direction through a vertically extending telescopic cylinder 45, and are opposed to the tape retainer 44. Then, the base 47 is fixedly mounted on the support portion 5. By extending the telescopic cylinder 45, the cutter 4
3 descends along the front surface of this stand 47. The tape retainer 44 is supported by the telescopic cylinder 45 via a spring (not shown), and the extension of the telescopic cylinder 45 presses and holds the tape 46 on the base 47.

On the other hand, a taping unit 23 as shown in FIG. 10 is arranged below the spindle 4 in order to wind the insulating tape on the bobbin 3 from above the winding.

The taping unit 23 comprises a base member 25 attached to the supporting portion 5 via an upper and lower cylinder 24 so as to be movable in the vertical direction, and a guide 27, a tape chuck 29, a cutter 30 and a striking roller 32. Is.

The guide 27 is fixed to the base member 25,
The insulating tape 26 is guided upward by a guide 27 from a tape reel (not shown) built in the base 1, and is bent 90 degrees at the bending portion of the guide 27 to be guided in the horizontal direction.

A bracket 35 is supported on the base member 25 via a horizontal cylinder (not shown) so as to be movable in the horizontal direction, and a tape chuck 29 is supported on the bracket 35 via a chuck cylinder 28. Tape chuck 2
Reference numeral 9 opens and closes in response to the drive of the chuck cylinder 28, and holds the end portion of the insulating tape 26 guided by the guide 27.

The cutter 30 is vertically displaced according to the expansion and contraction of the cutter cylinder 31 attached to the guide 27, and the guide 2
The insulating tape 26 is cut between the chuck 7 and the chuck 29.

Stroke roller 32 is stroked cylinder 3
It is supported by the base member 25 via 3 and moves in the Z-axis direction in the drawing in accordance with the expansion and contraction of the cylinder 33 which is stroked.

The drive of each actuator used in the above winding machine is controlled by a controller supplied as a separate unit.

Next, the operation will be described.

The work by the winding machine is started when the arm 6 first receives the bobbin 3 from the bobbin carrying jig 2B on the conveyor 2. Therefore, the arm 6 moves toward the conveyor 2, and the tip end portion of the bobbin transfer jig 20 is laterally fitted into the annular groove 3A of the bobbin insertion jig 3C on the bobbin transfer jig 2B. Then bobbin 3 with arm 6
Together with the insertion jig 3C are scooped up from the bobbin transfer jig 2B and moved toward the support portion 5, and the bobbin 3 is moved as shown in FIG.
Is rotated 90 degrees and mounted on the spindle 4.

Nozzle 1 is attached to the discarding binding pin 19 of the arm 6.
The end portions of the two wire rods sent out from No. 3 are entwined in advance, and when the bobbin 3 is received, the arm 7 moves integrally with the arm 6 so that the wire rod is not unnecessarily sent out from the nozzle 13. To

After mounting the bobbin 3 on the spindle 4, the arm 6 moves away from the bobbin 3 along the Y-axis in FIG. 1, the bobbin transfer jig 20 is disengaged from the bobbin insertion jig 3C, and rotated to the vertical position. .

In this state, the X-axis motor 11, the Z-axis motor 12 and a Y-axis motor (not shown) are operated to drive the nozzle 13
Arm 7 so that it rotates around terminal 3B of bobbin 3.
By moving, the wire rod fed from the nozzle 13 is entwined with the terminal 3B for starting the winding integrally.

After wrapping the wire rod around the terminal 3B, the nipper cutter 16 drives the nipper cutter 16 to dispose of the wire rod from the entanglement pin 19 to the terminal 3B of the bobbin 3.
Cut near B. The scraps of the wire material remaining on the throw-away binding pin 19 are removed by sliding the wire discharging mechanism 22 up and down by driving the lifting cylinder 59.

Next, the arm 7 is moved to move the nozzle 13 in parallel with the central axis of the bobbin 3 to guide the wire from the terminal 3B to the winding start position. At this time, the small diameter pipe 1 at the outlet of the nozzle 13
3A is aligned in the transverse direction of the bobbin 3, that is, the two small diameter pipes 13A are aligned in the transverse direction of the bobbin 3, by controlling the pivot position of the nozzle 13 via the pivot actuator 52. The wire rods are guided in parallel to the winding start position.

Then, the motors 8, 9 and 10 are operated to move the arm 6, and the lifting cylinder 59 is driven to lower the wire pressing member 18 onto the body portion 3E of the bobbin 3, as shown in FIG.
As shown in (2), the two wires extending from the terminal 3B to the winding start position are held in contact with the body portion 3E by the groove 58 on the base end side. Since the groove 58 has a depth approximately equal to the thickness of the wire rod and a width approximately equal to the width in which two wire rods are arranged, the two wire rods extending from the terminal 3B to the winding start position are inside the groove 58. It is held in parallel.

On the other hand, by driving the turning actuator 52, the nozzle 13 is turned by 90 degrees so that the small diameter tubes 13A are aligned parallel to the central axis of the bobbin 3. At this turning position, the nozzle 13 is moved in the transverse direction of the bobbin 3. Along with this movement, the wire rod is moved to the outlet of the groove 58 of the wire retainer 18 by 9
Although it refracts to 0 degrees, by changing the direction in which the small diameter tubes 13A are lined up by 90 degrees, the two wire rods do not overlap vertically,
Refracts in the parallel state.

In this state, the wire holder 18 is once moved away from the bobbin 3. Since the wire is made of a metal wire, the bending portion is in a plastically deformed state, and even if the wire retainer 18 is removed, the wires do not overlap each other. In this state, the bending portion of the wire is fixed to the bobbin 3 by the taping unit 36 for partial fixing.

To this end, in the taping unit 36, the cutter 43 and the tape retainer 44 are driven by driving the telescopic cylinder 45 while holding the end of the tape 46 by the chuck 42 as shown in FIG. The tape 46 is cut by the cutter 43 on the front surface of the table 47 while lowering and pressing the tape 46 on the table 47 with the tape pressing tool 44.

With the chuck 42 holding the fragment of the tape 46 thus cut, the telescopic cylinders 40 and 4
1 is driven to bring the chuck 42 close to the bobbin 3 and a piece of the tape 46 is attached to the bending portion. Then, by pressing the attached piece of the tape 46 against the body portion 3E of the bobbin 3 by the convex portion 56 of the wire pressing member 18, the tape 46 is brought into close contact with the body portion 3E and the bending portion is locked to the body portion 3E. The taping unit 36 is used to remove the bending portion from the body portion 3E.
Instead of locking the nozzle 13 to the horizontal position, the nozzle 13 is tilted to the horizontal position to make one round around the bobbin 3 and the wire rod fed from the nozzle 13 is wound around the barrel 3E for one round, thereby engaging the bending portion with the barrel 3E. It is possible to stop.

After the bending section is locked to the body section 3E,
The chuck 42 and the wire holder 18 are moved away from the bobbin 3. When the bobbin 3 is rotationally driven through the spindle 4 in this state, the winding of the wire on the body 3E is started from the bending position. At this time, since the small-diameter tubes 13A of the nozzle 13 are arranged in parallel with the central axis of the bobbin 3, the two wire rods fed from the nozzle 13 are wound around the body portion 3E while maintaining the parallel state. As the winding proceeds, the nozzle 13 is displaced in the central axis direction of the bobbin 3 by driving the X-axis motor 11, so that the wire is evenly wound around the body 3E in layers.

When the winding work of a predetermined number of times is completed, the rotation of the spindle 4 is stopped, the wire holder 18 is lowered between the terminal 3B and the nozzle 13 and applied to the body portion 3E of the bobbin 3.

When the small diameter tube 13A is aligned in the transverse direction of the bobbin 3, the nozzle 13 is swung 90 degrees by the driving of the swivel actuator 52, and the tip of the wire pressing tool 18 is swung around so that it is vacant. By moving toward the other terminal 3B, the wire is bent at the entrance of the groove 57 while maintaining the parallel state, and guided to the terminal 57B for winding end by being guided by the groove 57.

Here, the taping unit 36 for partial fixing is driven again to lock the bending portion on the wound wire, and the nozzle 13 is swung around the terminal 3B to entangle the wire with the terminal 3B. It The wire entwined with the terminal 3B is further entangled with the discarding entanglement pin 19 of the arm 7 and then cut by the nipper cutter 16 in the vicinity of the terminal 3B.

Finally, the taping unit 23 winds the insulating tape 26 on the winding. Then, the bobbin 3 is pulled out from the spindle 4 by the transfer jig 20 of the arm 6 and transferred to the bobbin transfer jig 2B, whereby a series of winding work on the bobbin 3 is completed and the conveyor 2 is newly transferred. Similar work is done for the incoming bobbin 3.

In this way, winding work using a plurality of wire rods such as a litz wire can be efficiently carried out without causing twisting or irregular overlapping.

Since the nozzle 13 is configured to be rotatable, for example, even when the interval between the terminals 3B is extremely narrow and the nozzle 13 cannot pass between the terminals 3B as it is, the nozzle 13 can be rotated to rotate the terminals. It becomes possible to pass between 3B. Therefore, the swivel nozzle 13 not only prevents the wire rods from overlapping, but also improves the workability of the nozzle 13 itself.

FIG. 11 shows another embodiment for accommodating the wire holder 18. Here, the groove 57,
Similar grooves 60 and 61 are formed at right angles to 58. Since these grooves 60 and 61 function as guides for guiding the wire rods in the winding direction, it is possible to more reliably prevent the wire rods from overlapping.

[0058]

As described above, according to the present invention, a plurality of wire rods are simultaneously sent out from the nozzle opening while maintaining a predetermined parallel state, so that the wire rods can be easily wound in the parallel state.

Further, in the bending portion which is the boundary between the lead wire and the winding wire, the nozzle is approximately 90 around the nozzle center axis.
Since the wire is turned, the wire rods can be fed in parallel in the winding direction and the direction of the lead wire that is perpendicular to the winding direction.

Further, by holding the wire rod on the bobbin with the wire retainer provided with the guide groove, it is possible to reliably maintain the parallel state of the wire rod even in the bending portion of the wire rod formed between the winding wire and the lead wire. .

Therefore, in a winding work in which a plurality of wire rods such as a litz wire are used at the same time, the parallel state of the wire rods is always maintained, so that inconvenience such as disconnection and winding disorder does not easily occur, and this kind of winding work is performed. It has a positive effect on the quality improvement and efficiency improvement of

Further, since the swirl type nozzle facilitates passage of a nozzle having a narrow gap such as between terminals, a favorable effect can be expected in improving the working efficiency of the nozzle.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a winding machine showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of an arm that supports a nozzle.

FIG. 3 is an enlarged vertical cross-sectional view including a partial cross-section of the nozzle.

FIG. 4 is an enlarged vertical cross-sectional view including a partial cross-section of a main part of a nozzle showing another embodiment.

FIG. 5 is an enlarged perspective view of an arm that supports a wire retainer.

FIG. 6 is an enlarged perspective view of the main part of the wire pressing tool.

FIG. 7 is a perspective view of a main part for explaining the operation of the wire retainer at the beginning of winding the wire.

FIG. 8 is a perspective view of a main part for explaining the operation of the wire retainer at the end of winding the wire.

FIG. 9 is an enlarged perspective view of a taping unit for partial fixing.

FIG. 10 is an enlarged perspective view of a taping unit for an insulating tape.

FIG. 11 is an enlarged perspective view of another embodiment relating to the wire retainer.

[Explanation of symbols]

 3 bobbin 4 spindle 6,7 arm 13 nozzle 13A small diameter tube 13B variable diameter tube 18 wire retainer 52 swivel actuator 57,58 groove

Claims (6)

[Claims] 1. A coil winding machine for winding a wire rod on a bobbin using a spindle for rotating the bobbin and a nozzle for supplying the wire rod to the bobbin, and an opening for simultaneously feeding a plurality of wire rods in a predetermined parallel state. The coil winding machine is characterized in that the coil is formed at the outlet of the nozzle. 2. The coil winding machine according to claim 1, wherein a plurality of openings for feeding the wire material are provided in parallel at the nozzle outlets. 3. A single opening having an elliptical cross section that matches the dimensions of the wire rods in parallel is provided at the nozzle outlet.
The described coil winding machine. 4. The coil winding machine according to claim 1, further comprising a nozzle swivel mechanism that swivels the nozzle about a central axis of the nozzle. 5. A wire retainer for temporarily holding the wire rod supplied from the nozzle on the outer periphery of the bobbin is provided, and a plurality of wire rods are arranged in parallel to the wire retainer and are substantially perpendicular to the winding direction of the bobbin. A groove for guiding the direction is formed.
The described coil winding machine. 6. The coil winding machine according to claim 5, wherein the wire retainer is provided with another groove for guiding the wire material in a parallel state in a direction substantially perpendicular to the groove.