JP2000260652A - Toroidal winding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a toroidal winding method and apparatus which is capable of improving the quality of a toroidal coil by tightly winding a wire material while re-inserting the wire into a winding hole of a core using only one insertion head unit, and which also allows a single operator to handle production control of tens of apparatuses by facilitating assembly, adjustment, maintenance and inspection while simplifying the construction. SOLUTION: The outer circumference of a core C is held by a core outer circumference holding section 21 constructed of core outer circumference holding legs 21a, 21b and 21c, and a wire w is wound around the core C. The section 21 is opened, and the side surfaces of the core C is held by a core side holding section 40 constructed of a pair of core side holding sections 40a. Then, the core C turns on its axis by a predetermined angle as the section 40 rotates. Thereafter, the section 21 is closed, whereby the material w is wound around the core C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a helical wire for a core of an electromagnetic coil used for noise prevention, noise filters and switching regulators of OA electrical equipment such as personal computers, word processors and printers. The present invention relates to a toroidal winding device wound around a toroidal winding.

[0002]

2. Description of the Related Art Conventionally, this type of toroidal winding method and apparatus have been constructed as shown in FIGS. 21 and 22 (Japanese Patent Laid-Open No. 1-272105).

In FIG. 21 and FIG. 22, a winding ring b is attached to one side of a coil storage ring a provided with a circumferential groove a1 which is rotatable and has a U-shaped cross section. The wire ring b is provided with a guide piece c having a guide hole c1 and a guide roller d. A gear e is integrally provided on the outer periphery of the side surface of the coil storage ring a.
An opening (not shown) for inserting the.

Therefore, in the above-described toroidal winding method and apparatus, the wire g is wound in advance in the circumferential groove a1, and the core f is inserted through the opening of the coil storage ring a.

[0005] Next, after the core f is wound around the end of the wire g, the gear e is rotated, and the core f is slowly moved to the virtual axis while rotating the coil storage ring a integral therewith. By turning around, the wire g is wound around the outer periphery of the core f.

On the other hand, a toroidal winding method and its device are configured as shown in FIG.
No. 72105).

In FIG. 23, an output shaft i1 of a drive motor i is mounted on a holding member h1 of a substrate h so as to protrude upward, and a holding member h1 near the output shaft i1 has:
A plurality of (only one is shown in the figure) friction rollers j
It is supported by. On the substrate h, a core f is provided so as to rotate around a virtual axis. Inside the core f, a storage bobbin k on which a wire g is wound is provided with a winding ring m. Is rotatably mounted on the pin shaft m1.

Therefore, in the above-described toroidal winding method and apparatus, the wire g is wound and stored in the storage bobbin k in advance. Next, after the core f is wound around the tip of the wire g, the core f is slowly rotated around the virtual axis while rotating the winding ring m and the storage bobbin k. The wire g is wound around the outer periphery of the core f.

[0009]

However, the former toroidal winding method and the above-described apparatus have a structure in which the storage ring and the winding ring are opened each time one core is wound and the core is inserted into the storage ring. Not only must the wire be wound around the storage ring to complement the opening of the ring and the winding ring, but also, as shown in FIG.
1 and the axis O of the coil storage ring a are eccentric by the distance L, so that the wire g is pulled or loosened alternately during winding, and the winding of the core f is disturbed. It is difficult to tightly wind the wire g around the core f, and it is difficult to improve the quality of the toroidal winding.

On the other hand, in the latter toroidal winding method and the above-described apparatus, the storage bobbin k is provided in the hole of the core f, and the core f is slowly rotated around the virtual axis while rotating the storage bobbin k. By rotating around, the core f
Since the wire g is wound around the outer circumference of the wire, it is difficult to wind the wire with the storage bobbin k built in a small-diameter magnetic core having an inner diameter of about 3 mm.

On the other hand, another method and apparatus for winding a toroidal core include inserting a wire into a winding hole of a toroidal core, and then rotating the core in the winding direction of the wire.
Thereafter, the wire is wound and then the core is rotated back to the original position, and the wire is wound around the core while being tensioned while being tensioned (JP-A-61-259515). ). Further, another winding device performs toroidal winding while holding a work (core) with a pair of left and right holding claws and drawing a wire through a hole in the work with a pair of front and rear wire holding claws (Japanese Patent Application Laid-Open No. H10-163,197). 62-13
No. 6479). Still another magnetic head winding method includes an insertion step of inserting a wire through a winding hole of a magnetic core from one surface of an upright magnetic core, a drawing step of pulling out a tip of the wire from the other side of the magnetic core, A magnetic head comprising: a tightening step of inclining a core in a winding hole so that the wire is bent at an obtuse angle to apply tension to the wire; and a winding step of rotating the magnetic core in a horizontal plane and winding the wire around the magnetic core. Winding method (Japanese Unexamined Patent Publication No.
No. 8) has already been proposed. However, these are not only complicated in structure and complicated in assembling and adjusting, but also it is theoretically possible to wind a wire around an extremely small diameter magnetic core having an inner diameter of about 3 mm. And it is difficult to tightly wind the wire around the core, and it is difficult to improve the quality of the toroidal winding.

According to the present invention, in order to solve the above-mentioned problems, a wire rod is drawn back into a winding hole of a core by a single insertion head device and tightened and wound, thereby improving the quality of the toroidal winding and simplifying the structure. It is an object of the present invention to provide a toroidal winding method and apparatus capable of facilitating assembly adjustment and maintenance and inspection, and enabling one operator to control the production of several tens of units.

[0013]

SUMMARY OF THE INVENTION The present invention relates to an insertion head device provided reciprocally on a substrate and having a wire insertion claw, and a rotating device provided on a traveling path of the substrate insertion head device. A table, a core outer periphery holding portion provided on the rotary table for holding the outer periphery of the core releasably,
A core side holding portion for holding the both sides of the core releasably and rotating the core, and a clamp device provided on the rotary table in the vicinity of the core so as to be able to move up and down and having gripping claws for gripping a wire. A toroidal winding device characterized in that:

According to the present invention, the core is held by the core outer periphery holding portion, the core is held by the core side holding portion, held and rotated, and the rotary table is rotated to drive the insertion head device and the clamp device. The wire can be wound around the core by a predetermined number of turns.

[0015]

Embodiments of the present invention will be described below. First, an outline of the toroidal winding device will be described with reference to FIGS.

4 to 6, reference numeral 1 denotes a flat substrate, on which an elongated bracket 2 is provided.
The bracket 2 is provided with a feed screw 4 made of, for example, a ball screw. A pulley 5 is mounted on a rotary shaft 4 a of the feed screw 4. Further, a drive motor 6 by, for example, a servomotor is connected to the pulley 5 via a transmission belt 7 so as to be able to rotate forward and reverse.
Is inserted into the core C, and the lower part thereof is attached rotatably about the support shaft 8a. The bracket 2 runs on a rail 2a.

As shown in FIGS. 4 to 6, the base 9a of the slide body 9 of the insertion head device 8 is screwed onto the bracket 2, and the free end of the slide body 9 has
The insertion head 10 is vertically suspended by the front and rear cylinders 92 so as to be urged in the axial direction with respect to the feed screw rod 4 to be movable in the axial direction by the tension of the wire w. An insertion claw 11 is provided at a lower end of the insertion head 10. This insertion claw 11
In response to a command from a controller (not shown), the end of the wire w is gripped or released by the opening / closing cylinder 91 and is rotated around the support shaft 8a by the rotary cylinder 93.

On the other hand, as shown in FIGS. 4 and 7, a cut unit 12 is provided on the substrate 1 on the transfer path of the insertion head device 8 so as to be able to move up and down in a vertical direction. The wire rod w is cut by the cutter device 14 at the same time that the w is gripped by the clamp device 13. That is, an elevating cylinder 15 is erected on the substrate 1 on the transfer path of the insertion head device 8, and the output shaft 15a of the elevating cylinder 15 cuts the clamp device 13 for gripping the wire w and the wire w. Cutter device 1
4 are provided side by side. The cutter device 14 holds the wire w measured by the respective cutters 14 a to a predetermined length with the gripping claws 13 a of the clamp device 13 and simultaneously cuts the wire w with the respective cutters 14 a of the cutter device 14.

On the other hand, as shown in FIGS. 1 to 3, the substrate 1 on the transfer path of the insertion head device 8 is provided with, for example, a reciprocatingly rotated servomotor 16 and a gear box 16b. The output shaft 16a of 16b extends upward through the substrate 1. A bearing 17 is provided on the substrate 1, and the bearing 17 is provided on the rotating table 1 connected to the output shaft 16a.
The base 8 is axially mounted so that it can be exchanged and reciprocates about 180 °.

As shown in FIG. 2, the rotary table 18 is provided with a lifting cylinder device 28. A retractable cylinder device 30 is horizontally placed on a receiving base 29 integral with an output shaft 28a of the lifting cylinder device 28 so that the output body 30a can slide back and forth toward one side of the core C. The output device 30a is provided with a clamp device 31 having a gripping claw 31a so as to grip the end of the wire w.

Therefore, the gripping claws 3 of the clamp device 31
When 1a grips the wire w passed through the hole of the core C, the retracting cylinder device 30 moves outward by a predetermined length and stops. When the rotary table 18 is rotated, the gripping claw 31a is moved down to a position where it does not interfere with the insertion claw 11 of the insertion head device 8.

Further, on the rotary table 18, there is provided a core outer periphery holding portion 21 for releasably holding the outer periphery of the core C (FIG. 3). The core outer periphery holding portion 21 includes three core outer periphery holding legs 21a and 21 for supporting the outer periphery of the core C at three points.
b, 21c. Core outer periphery holding legs 21a, 21
The b and 21c open the right side of the core C in FIG. 3 to hold the core C, and the core outer circumference holding legs 21a, 21b and 21c are driven by a drive provided on the rotary table 18. It is driven by a cylinder 23.

That is, the driving cylinder 23 has three driving bodies 22a, 22 driven by the driving cylinder 23.
b and 22c are connected, the core outer peripheral holding leg 21a is driven by the driver 22a, the core outer peripheral holding leg 21b is driven by the driver 22b, and the core outer peripheral holding leg 21c is driven by the driver 22c.

As shown in FIGS. 2 and 11, on the turntable 18, there are provided core side holding portions 40 for holding both sides of the core C in a releasable manner and for rotating the core C on its own axis. Here, FIG. 11 (A) is a plan view showing the side holding portion, FIG. 11 (B) is a side view thereof, and FIG. 11 (C) is a view taken along line CC of FIG. 11 (B). The core side holding portion 40 includes a pair of core side holding legs 40a and 40b, and each of the core side holding legs 40a and 40b is
1 to hold the core C around the center.

The core holding mechanism 41 is provided with an arcuate guide rail 44 and a bearing 48.
The guide rail 44 runs in the guide roller 42 provided on the rotary table 18, and the bearing 48 runs in the arc-shaped guide rail 43 formed on the frame 50 on the rotary table 18. Thus, the core holding mechanism 41 rotates around the core C along the guide roller 42 and the guide rail 43.

Further, an arc-shaped gear 44a is provided on the guide rail 43, and is connected to the gear 47a. The guide rail 43 is driven by a rotation drive unit 47 provided on the turntable 18 via a gear 47a.
The driving roller 46 is driven to rotate by the rotation driving unit 47, so that the core holding mechanism 41 and the core C are rotated by a predetermined rotation angle.

Further, as shown in FIG.
8, contact devices 25 and 27 for bending the wire W and abutting the side surface of the core C are provided. This contact device 2
Reference numerals 5 and 27 each include a wire bent portion 25 provided at the tip of the drive cylinder 25a and a wire contact portion 27.

The wire bending portion 25 is driven by a rotary drive cylinder 25a, and the wire W inserted into the core C is moved.
The wire contact portion 27 holds the folded wire W driven by the drive cylinder 27a so as to contact the side surface of the core C.

A coil presser 26 is provided on the rotary table 18 for holding the wire W wound around the core C on the outer periphery of the core C.
6a.

As shown in FIGS. 4 and 14, the toroidal winding device according to the present invention includes a core supply device 60 provided on the base 1. This core supply device 60
Is a storage cylinder 6 for stacking and storing a large number of unused cores C.
0a and a storage case 62 that supports a lower part of the storage cylinder 60a. A core supply part 62a having an open upper end is provided at an end of the storage case 62. The core supply part 62a and the storage cylinder 60a are
2 are communicated with each other by a communication passage 63 provided in the inside 2.

The lowermost core C in the storage cylinder 60a is pushed out to the opposite side of the storage case 62 with the storage cylinder 60a interposed therebetween, and is sent to the core supply section 62 through the communication passage 63. An extrusion device is provided.

The base 1 is provided with the unused core C of the core supply device 60 and the core outer peripheral holding portion 21 on the rotary table 18.
There is provided a core transfer device 70 (FIG. 8) for transferring to the core. The core transfer device 70 includes a core supply chuck 71 that grips the core C of the core supply device 60 at the distal end 71 a and transfers the core C to the core outer peripheral holding unit 21, and the core C on which the wire w is wound by the core outer peripheral holding unit 21. A core discharge chuck 72 which is gripped by 72a and transferred to a discharge portion 65 provided on the base 1.

Next, the core transfer device 70 will be described with reference to FIG. The core transfer device 70 includes a core supply chuck 71.
And a holding body 70 for integrally holding the core discharge chuck 72 and
a, and the core supply chuck 7 is
1 and the core discharge chuck 72 move integrally. Here, FIG. 8B is a view taken in the direction of arrow B in FIG. 8A.

As shown in FIGS. 8A and 8B, the holding member 70a is rotated around an axis orthogonal to the base 1 by the rotation driving mechanism 73, and the rotation driving mechanism 7 is rotated.
4 rotates around an axis parallel to the base 1.

Further, as shown in FIG.
An insertion claw 11 is provided on the upper surface 8 to face the clamp device 31 having the holding claw 31a so as to be freely opened and closed.

Further, as shown in FIG. 10, on the turntable 18, near the core C of the core outer peripheral holding portion 21, there is provided a cutting processing device for cutting the residual wire w wound around the core C. 80 are provided. This cutting processing device 80
Is composed of a fixed blade 81 and a movable blade 82 provided movably with respect to the fixed blade 81, and a cutting action is performed by the drive unit 80b. Further, the cutting processing device 80
A drive unit 80a provided on the turntable 18 at an angle
Ascends to the cutting position.

First, the operation of removing and attaching the core C from the core outer peripheral holding portion 21 will be described with reference to FIGS.

First, after the winding of the wire W is completed, the remaining wire w after being wound around the core C is cut, and the core C is removed by the core outer peripheral holding portion 21. In this case, the core discharge chuck 72 holds the core C held by the core outer peripheral holding portion 21.
Approach (FIG. 12 (A)) and eject the core C to the discharge chuck 72.
(FIG. 12B). Next, the core outer periphery holding portion 21
The core outer peripheral holding legs 21a, 21b, and 21c are driven by the drive cylinder 23 to open and release the core C (FIG. 12C).

Next, as shown in FIG. 13, the core C pinched by the core discharge chuck 72 is separated from the core outer peripheral holding portion 21 to the side (FIG. 13A). Next, the core transfer device rotates horizontally by 90 °, and the new core C held by the core supply chuck 71 approaches the core outer peripheral holding unit 21.
Thereafter, the core C is inserted into the core outer peripheral holding portion 21 (FIGS. 13B and 13C).

Next, the core outer circumference holding legs 21a, 21b, 21c of the core outer circumference holding portion 21 are driven by the drive cylinder 27 to be closed and hold the core C (FIG. 13D).

Next, the core supply chuck 71 closes and separates from the core outer periphery holding portion 21 holding the new core C, and at the same time, the core discharge chuck 72 holding the core C around which the wire w is wound is moved from the core outer periphery holding portion 21. Leave (Fig. 14 (A)
(B)).

Next, the core supply chuck 71 and the core discharge chuck 72 move to transfer the core C with the wire w held by the core discharge chuck 72 to the discharge section 65 (FIG. 14C).

Thereafter, the core supply chuck 71 and the core discharge chuck 72 reach the core supply section 62a. Next, the tip 71a of the core supply chuck 71 enters the core C of the core supply section 62a, the core supply chuck 71 is opened, and the core C is gripped by the tip 71a (FIG. 14D). , And the core C is
Install.

In this manner, the core C can be easily supplied and discharged from the core outer peripheral holding portion 21.

Next, a winding start step and a winding step of the wire around the core C will be described with reference to FIGS.

As shown in FIG. 15A, first, the insertion claw 11 of the insertion head device 8 grips the tip w1 of the wire rod w,
Subsequently, the insertion head device 8 moves forward. Next, FIG.
As shown in FIG.
Is a gripping claw 31a of the clamp device 31 that penetrates the core C.
Reach

Next, as shown in FIG.
1a closes and grips the tip w1.

Thereafter, the insertion claw 11 is opened, and FIG.
As shown in (1), the tip w1 of the wire rod w is pulled by the gripping claws 31a.

In FIG. 15D, in this state, the rotary table 18 is rotated by 180 °, the core C on the rotary table 18 and the gripping claws 31a are inverted, and the state shown in FIG. 16A is obtained. Note that a wire bent portion 25 and a wire contact portion 27 are provided near the core outer periphery holding portion 21, and in this case, the wire w is inserted into the opening 50 of the wire bent portion 25 in advance.

Next, as shown in FIG. 16B, the insertion claw 11 of the insertion head device 8 holds the wire w, the holding claw 31a opens, and the clamp device 31 descends.

Next, as shown in FIG. 16C, the insertion head device 8 is moved back, and the tip w1 of the wire w is moved by the insertion claw 11.
Pull. Next, as shown in FIG. 17A, when the tail end w2 of the wire w reaches the core C, the insertion head device 8 is stopped, and the wire bending portion 25 is driven by the rotary drive cylinder 25a, and the wire bending is performed. The tail end w2 is bent by the bent portion 25 and pressed against the side surface of the core C so that the tail end w2 of the wire w is not loosened. At this time, the wire bent portion 25 moves along the side plate 49.

Next, as shown in FIG. 17 (B), the wire contact portion 27 is driven by the drive cylinder 27a, and the wire w
Is pressed against the side plate 49 to hold the tail end w2 against the side surface of the core C. Next, the turntable 18
0 ° and the core C on the turntable 18
And the gripping claws 31a are inverted, and the state shown in FIG. In this manner, the wire w is wound around the core C. After that, as shown in FIG.
Then, the insertion head device 8 moves forward again to transfer the tip w1 of the wire w to the core C side. At this time, the wire w wound around the core C is pressed against the outer periphery of the core C by the coil pressing device 26.

Next, the wire w is inserted again into the core C by the insertion claw 11 of the insertion head device 8 (FIG. 18B).
Next, the tip w1 of the wire w is
a, the insertion head device 8 rises and the turntable 18 rotates (FIGS. 18C and 18D).

Next, the insertion head device 8 descends to insert the insertion claw 1.
1, the wire w is gripped, and at the same time, the gripping claws 31a of the clamp device 31 are opened (FIG. 19A). Next, the insertion head device 8 moves backward, and the tip w1 of the wire w is pulled by the insertion claw 11 (FIG. 19B). At this time, wire bending part 2
5 and the wire contact portion 27 descend.

Thereafter, the coil presser 26 descends and the rotary table 18 rotates, and the wire w is wound around the core C. Next, the wire w wound around the outer periphery of the core C is
It is pressed again by the coil pressing device 26.

Next, the rotation of the core C by the core side holding portion 40 will be described with reference to FIG. Each time the wire w is wound around the core C once, the core C is attached to the core side holding portion 4.
It rotates by 0.

That is, when the wire w is wound around the core C held by the core outer periphery holding portion 21, the core side holding leg 40 a of the core side holding portion 40 is moved to the core holding mechanism 4.
1 and is brought into contact with the side surface of the core C (FIG. 20A). Next, the core outer peripheral holding unit 21 is opened (FIG. 20B), and then the core holding
And the core side holding leg 40a rotates by a predetermined angle (FIG. 20C). This rotation angle corresponds to the winding pitch angle of the wire w. Thereafter, the core outer peripheral holding portion 21 is closed (FIG. 20D), and then the core side holding leg 40a is opened (FIG. 20E). Next, the core side holding portion 40a
Rotates to return to the original position (FIG. 20 (F)).

In this manner, the wire w can be wound around the core C at a predetermined pitch.

[0059]

As described above, according to the present invention, the core held by the core outer periphery holding portion is held by being held by the core side holding portion, and the core is rotated by itself. It can be wound by a predetermined number of turns.
For this reason, even with a small core, the wire can be wound with high precision, and the winding operation can be automated to save labor by mass production.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of an embodiment of a toroidal winding method apparatus of the present invention.

FIG. 2 is a partial cross-sectional view taken along line AA of FIG.

FIG. 3 is a view taken in the direction of the arrow B in FIG. 1;

FIG. 4 is a plan view of the toroidal winding device of the present invention.

FIG. 5 is a view taken in the direction of the arrow A in FIG. 4;

FIG. 6 is a side view of the insertion head device of the present invention.

FIG. 7 is an enlarged side view of a cutting unit incorporated in the present invention.

FIG. 8 is a diagram showing a core transfer device of the toroidal winding device.

FIG. 9 is a diagram showing a clamp device of the toroidal winding device.

FIG. 10 is a diagram showing a cutting device of the toroidal winding device.

FIG. 11 is a diagram showing a side holding portion of the toroidal winding device.

FIG. 12 is a view showing the operation of the core transfer device of the toroidal winding device.

FIG. 13 is a view showing the operation of the core transfer device of the toroidal winding device.

FIG. 14 is a diagram showing the operation of the core transfer device of the toroidal winding device.

FIG. 15 is a diagram illustrating a winding operation of a core wire of the toroidal winding device.

FIG. 16 is a diagram showing a winding operation of a core wire of the toroidal winding device.

FIG. 17 is a diagram showing a winding operation of a core wire of the toroidal winding device.

FIG. 18 is a diagram showing a winding operation of a core wire of the toroidal winding device.

FIG. 19 is a diagram illustrating a winding operation of a core wire of the toroidal winding device.

FIG. 20 is a view showing the operation of a core outer periphery holding portion and a core side holding portion of the toroidal winding device.

FIG. 21 is a view showing a conventional toroidal winding device.

FIG. 22 is a view showing a conventional toroidal winding device.

FIG. 23 is a view showing a conventional toroidal winding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 4 Feed screw 8 Insertion head device 11 Insertion claw 18 Rotary table 21 Coil outer periphery holding part 21a, 21b, 21c Coil outer periphery holding leg 25 Wire bending part 26 Coil pressing device 27 Wire contact part 40 Coil side holding part 40a , 40b Coil side holding leg 31 Clamping device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahiro Nagai 18 Kidowaki, Kitahara, Haramachi-shi, Fukushima F-term in the Haramachi Factory of Japan Automatic Machine Co., Ltd. 5E062 HH01 JJ02 JJ12 JJ14 JJ22 JJ23

Claims (5)

[Claims] 1. An insertion head device reciprocally provided on a substrate and having a wire insertion claw; a rotary table provided on a traveling path of the substrate insertion head device; and a core provided on the rotary table. A core outer periphery holding portion that releasably holds the outer periphery of the core, a core side holding portion that holds the both sides of the core releasably and rotates the core, and is provided on the rotary table near the core so as to be movable up and down.
A toroidal winding device comprising: a clamp device having a gripper for gripping a wire. 2. A contact device provided on the rotary table to bend a wire and abut against a side surface of a core, and a coil presser provided to hold the wire wound on the core. The toroidal winding device according to claim 1, further comprising: 3. The toroidal winding device according to claim 1, wherein the core outer periphery holding portion has three core outer periphery holding legs for supporting the outer periphery of the core at three points. 4. The toroidal according to claim 1, wherein the core side holding portion comprises a pair of core side holding legs, and each core side holding leg is swingably supported by the frame. Winding device. 5. The toroidal winding device according to claim 1, wherein each core side holding leg of the core side holding part is rotated by a predetermined rotation angle by a driving part.