WO2003105166A1

WO2003105166A1 - Machine for winding wire on toroidal core

Info

Publication number: WO2003105166A1
Application number: PCT/JP2003/007218
Authority: WO
Inventors: 隆昭永井; 竹内　一浩; 光義風間
Original assignee: 永田精機株式会社
Priority date: 2002-06-07
Filing date: 2003-06-06
Publication date: 2003-12-18
Also published as: DE10392460T5; CN1659665A; AU2003242256A1; CN100342465C; JP2004014839A

Abstract

A machine for winding wire on a toroidal core, enabling to form a common mode toroidal coil in which wire is wound counterclockwise on a half of the toroidal core and clockwise on the remaining half. The machine has a device (6) for holding a toroidal core in a sandwiching manner, a toroidal core swing device (50), a first wire-end chuck device (25), a wire connection device (4), and a roller (28) that conducts an elliptical orbit (EO) around the device for holding a toroidal core in a sandwiching manner. The machine comprises a wire winding device (3) for guiding wire on the lower face side of the toroidal core to the upper face side of the toroidal core, a second wire-end chuck device (40) for holding in a sandwiching manner an end portion of the wire on the side opposite to the first wire-end chuck device with respect to a face (S) where the elliptical orbit is formed, and a wire cutter device (45).

Description

Description Toroidal core winding machine

The present invention relates to a toroidal core winding machine which is capable of manufacturing a common mode toroidal coil having a right-handed portion of a wire provided in a half of a toroidal core and a left-handed portion of a wire provided in a half. Background technology

Toroidal coils used as electronic components include a one-way winding toroidal coil in which a wire is spirally wound in one direction on all or a part of the toroidal core, and a right-handed part of the wire on half of the toroidal core. There is a common mode toroidal coil that has a left-handed part of the wire in half.

The common mode toroidal coil is the same as a float-balanced line filter for in-phase type high-frequency currents because the windings are connected so that the in-phase type signals strengthen the magnetic flux in the core with each other. In addition, since the winding is connected in the direction to cancel the magnetic flux in the core with respect to the differential signal, the leakage magnetic flux is generated for the differential signal. It has been found to work to block high frequency signals.

Generally, toroidal coils are made by workers manually winding a wire around a toroidal coil. The number of windings of the wire wound around the toroidal core is usually performed visually by an operator. When winding the wire around the toroidal core, if the skill of the worker is high, the variation in the number of windings of the wire wound around the toroidal core can be avoided, but if the skill of the worker is low, the toroidal coil with a predetermined number of turns can be avoided. Toroidal coils with more or less turns are also made. Therefore, it is necessary to separately manage the number of turns of the toroidal coil.

In addition, toroidal coils made by hand are difficult to use if workers are highly skilled. Although the pitch of the wire wound around the lidal core can be kept constant, it is difficult to equalize the pitch of the wound wire if the skill of the workers is low, and it is not possible to secure uniform quality, resulting in defective products. To make.

In order to solve the problem of the toroidal coil made manually, a toroidal coiling machine has been developed in which a toroidal coil is made by mechanical means.

The toroidal core winding machine includes, for example, a toroidal core clamping device that clamps a toroidal core and an end of a wire as described in Japanese Patent Publication No. 2000-185875. A wire terminal chuck device for holding the wire, a wire locking device for guiding the wire on the upper surface side of the toroidal core to the lower surface side of the toroidal core, and a wire winding for winding the wire guided to the lower surface side of the toroidal core around the toroidal core. Device.

In the above toroidal core winding machine, the end of the wire cut to a predetermined length is clamped by a terminal chuck device, and the wire clamped by the terminal chuck device is rotated in one direction by a wire winding device. The wire between the terminal chuck device and the first winding part is cut by a cutting device, and the wire is wound on the toroidal core that rotates in one direction by the wire winding device. A toroidal coil in which the wire is spirally wound in one direction on the toroidal core is manufactured by winding the wire a predetermined number of times and cutting the wire following the final winding portion with a cutter device.

The toroidal coil winding machine manufactures a toroidal coil by continuously winding a wire around a toroidal core that rotates in one direction, so that the toroidal coil to be manufactured is formed by spirally winding a wire around the toroidal core in one direction. Disclosure of the Invention Unable to manufacture a common mode toroidal coil in which a right-handed portion of a wire is provided in half of a toroidal core and a left-handed portion of wire is provided in half.

An object of the present invention is to provide a winding device for a toroidal core, which makes it possible to produce a common mode toroidal coil. The toroidal core winding device according to the present invention includes a toroidal core for holding the toroidal core. A core clamping device, a toroidal core rotating device for rotating the toroidal core in both circumferential directions, a first wire terminal chuck device disposed above the toroidal core clamping device and clamping an end of a wire; A tongue locking device for guiding a wire located above the toroidal core to below the toroidal core through a core hole of the toroidal core; and a roller moving in an elliptical orbit around the toroidal core holding device. A wire winding device for guiding the wire on the lower surface side of the toroidal core to the upper surface side of the toroidal core; and receiving an end of the wire held by the first wire terminal chuck device from the first wire terminal chuck device. A second wire for holding an end of the wire on a side opposite to the first wire end chuck device with respect to a surface on which the elliptical track is formed; And a wire cutting device for cutting the wire whose end is held by the first wire terminal chuck device or the second wire terminal chuck device.

A left-handed wire is wound around half of the colloidal core, and a common-mode toroidal coil is formed with a right-handed wire wound around half. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a left side view of the toroidal coil winding device according to the present invention.

FIG. 2 is a front view of the toroidal core winding device according to the present invention.

FIG. 3 shows a toroidal core clamping device of the toroidal core winding device according to the present invention. C FIG. 4 shows a first wire terminal chuck device, a second wire terminal chuck device and a toroidal core clamping device of the toroidal core winding device according to the present invention. It is a figure which shows a positional relationship.

FIG. 5 is a diagram showing the operation of the key locking device and the pressing device of the toroidal core winding device according to the present invention.

FIG. 6 is a perspective view showing a state where the second wire terminal chuck device of the toroidal core winding device according to the present invention is assembled to the toroidal core holding device.

FIG. 7 is a diagram showing a first stage of preparation of a right-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 8 shows the right-hand part of the toroidal core of the toroidal core winding device according to the present invention. It is a figure which shows the 2nd stage of preparation.

FIG. 9 is a diagram showing a third stage of preparation of the right-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 10 is a diagram showing a first step of forming a right-hand wound portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 11 is a view showing a second step of forming the right-hand wound portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 12 is a diagram showing a completed stage of the right-hand wound portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 13 is a diagram showing a completed state of the right-handed portion of the common mode toroidal coil.

FIG. 14 is a diagram showing a first stage of preparation of a left-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 15 is a view showing a second stage of preparation of the left-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 16 is a diagram showing a third stage of preparation of the left-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 17 is a diagram showing a fourth step of preparing the left-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 18 is a view showing a fifth stage of preparation of the left-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 19 is a diagram showing a first step of forming a left-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 20 is a view showing a second step of forming the left-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 21 is a diagram showing a completed stage of the left-handed portion of the toroidal core of the toroidal core winding device according to the present invention.

FIG. 22 is a diagram showing a completed state of the common mode toroidal coil. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a left side view of a toroidal coil winding device according to the present invention. FIG. 2 is a front view of the toroidal coil winding device according to the present invention.

As shown in FIGS. 1 and 2, a toroidal core winding device 1 according to the present invention includes a wire indexing device 2 for supplying a wire, a wire winding device 3 for winding a wire around a toroidal core, and a toroidal device. A wire locking device 4 for guiding the wire supplied to the upper surface of the core to the lower surface of the toroidal core through the core hole of the toroidal core, and a pressing device for pressing the wire locking device 4 downward when the wire locking device 4 is lowered. With 5.

As shown in FIGS. 1 to 3, the wire index device 2 includes a toroidal core holding device 6 for holding a toroidal core, a wire length measuring device 7 for measuring a wire length, and a wire for winding the toroidal core around the toroidal core. And a rotating device 50 for rotating in both horizontal directions by one pitch.

As shown in FIG. 3, the toroidal core holding device 6 includes a pair of core holding portions 8a and 8b, a connecting rod 9 connecting the pair of core holding portions 8a and 8b, and a core holding portion 8a. , 8b.

The pair of core holding portions 8a and 8b are supported by guides 11 and 11 so as to be movable in the direction of arrow a. The connecting rod 9 has a screw portion 9a on one end side which is screwed into a right screw hole provided in the core holding portion 8a, and is screwed on the other end side with a left screw hole provided on the core holding portion 8b. Threaded portion 9b. A bevel gear 12 is mounted on an extension shaft 9c extending outward from a screw portion 9b provided on the connecting rod 9. A rotating shaft 13 extending in a direction perpendicular to the extension shaft 9c is provided with a bevel gear 14 and a toothed pulley 15 which are fitted to a bevel gear 12 provided on the extension shaft 9c. .

A toothed pulley 17 is attached to the rotary shaft 16 arranged in parallel with the rotary shaft 13 so as to be located on the same line as the toothed pulley 15 provided on the rotary shaft 13. A timing belt 18 is stretched between a toothed pulley 17 provided on the rotating shaft 16 and a toothed pulley 18 provided on the rotating shaft 13. The piston 20 of the air cylinder 19 is connected to an appropriate position of the timing belt 18. The toroidal core holding device 6 is configured to move the pair of core holding portions 8a and 8b in a direction in which the pair of core holding portions 8a and 8b move toward and away from each other by the rotation of the connecting rod 9, thereby forming the toroidal core with the pair of core holding portions 8a and 8b. 2 Hold 1 to release. The movement of the pair of core holding portions 8a and 8b is performed by moving the timing belt 18 in the direction of the arrow b by the piston 20 which expands and contracts by the operation of the air cylinder 19, thereby connecting the link rod 9 via the rotary shaft 13. By rotating in one direction or the other.

The toroidal core 21 disposed on the toroidal core holding device 6 is connected to the toroidal core 21 by a rotating device (not shown) when the pair of core holding portions 8a and 8b is disengaged from the toroidal core 21. The wire rotates in one direction in the horizontal plane by a rotation amount equivalent to one winding pitch of the wound wire. The rotation device 50 can also rotate in the opposite direction in the horizontal plane by a rotation amount corresponding to one winding pitch of the wire around which the toroidal core 21 is wound.

As shown in FIGS. 2 and 4, the wire length measuring device 7 includes a pair of gears 23a and 23b and a pulse motor (not shown) for driving at least one of the gears 23a and 23b. ), And a first wire end chuck device 25 for holding the end of the wire 24 drawn out from the coil storage unit (not shown) and measured. The wire length measuring device 7 has an operating means (not shown) for moving the first wire terminal chuck device 25 in the direction of arrow A.

As shown in FIG. 4, the first wire end chuck device 25 has a pair of clamp portions 26 and 26 and air actuating means 27 for opening and closing the pair of clamp portions 26 and 26. Hold and open the end of the measured wire 24.

The first wire terminal chuck device 25 moves between a position advanced in the direction of arrow A (FIG. 7) and a position retracted in the direction of arrow B (FIG. 8), and The pinched wire 24 is moved from a position above the toroidal core 21 to one side away from the toroidal core 21 to a position above the toroidal core 21 to a position away from the toroidal core 21 to the other side.

As shown in FIGS. 1 and 2, the wire winding device 3 includes a driving device 2 that rotates the roller 28 in an elliptical orbit around the toroidal core 21, as shown in FIGS. 9 and. Roller 28 has two cone-shaped openings as shown in FIG. La 28a, 28a are joined to each other on the small diameter side in a double cone shape, and a groove 28b into which the wire 24 enters is formed at a central portion in the axial direction.

As shown in FIGS. 1 and 2, the driving device 29 includes a swing lever 30, a shaft 31 provided at a lower end of the swing lever 30, and an upper end of the swing lever 30. The guide shaft 33 provided in the shaft, the guide groove 33 extending vertically to slidably support the shaft portion 30, and the roller 28 travels in an elliptical orbit around the toroidal core holding device 6. And swing means 34 for causing it to rotate.

The roller support shaft 32 is provided in a direction perpendicular to the paper of FIG. A roller 28 is attached to the tip of the roller support shaft 32 (see FIG. 5). In FIG. 2, the elliptical orbit EO drawn by the roller 28 around the toroidal core holding device 6 is on the elliptical orbit plane S. Further, as shown in FIG. 2 or FIG. 4, the roller support shaft 32 draws an elliptical orbit E O together with the roller 28 while standing perpendicular to the elliptical orbit plane S. As will be described later, when the roller 28 and the roller support shaft 32 rotate in an elliptical orbit around the toroidal core 21, the roller 28 and the roller support shaft 32 become the second wire terminal chuck device 40. The second wire end chuck device 40 is located radially inward of the elliptical trajectory E0 so as not to hinder the existence of the wire.

As shown in FIG. 5, the wire winding device 3 includes a toroidal core 21 held between a toroidal core holding device 6 in an elliptical orbit shown in FIG. By traveling around, the wire 24 on the lower surface side of the toroidal core 21 is guided to the upper surface side of the toroidal core 21, and the wire 24 is wound around the toroidal core 21.

As shown in FIG. 5, the wire locking device 4 includes a hook rod 36 having a hook portion 35 at an upper end portion, and a driving unit (not shown) for moving the hook rod 36 up and down. The hook rod 36 moves up and down through the core hole 21 a of the toroidal core 21, hooks the wire 24 located on the upper surface side of the toroidal core 21 with the hook portion 35, and hooks the hooked wire 24. It is guided to the lower surface side of the toroidal core 21 through the core hole 21 a of the toroidal core 21.

As shown in FIGS. 1 and 5, the pressing device 5 has a pushing rod 37 and a driving means 38 for moving the pushing rod 37 in the vertical direction. Push rod 3 7 When the hook rod 36 descends, the upper end of the hook rod 36 is pushed downward in conjunction with the hook rod 36, and the hook rod 36 holding the wire 24 is inserted into the core hole 21 a of the toroidal core 21. Press

When the pressing device 5 presses the hook rod 36 downward with the pushing rod 37, the pushing rod 37 pulls the wire 24 following the wire 24 hooked on the hook portion 35 of the hook rod 36 toroidally. Pressing between the upper surface of the core 21 and the slack of the wire 24, and bending the wire 24 along the inner surface of the toroidal core 21. As shown in FIG. 4, a second wire terminal chuck device 40 used for manufacturing a common mode toroidal coil is attached to a position adjacent to the outside of the toroidal core holding device 6, as shown in FIG. The second wire end chuck device 40 is located radially inward of the motion region of the roller 28 traveling on the elliptical track E0 so as not to interfere with the motion of the roller 28 traveling on the elliptical track. The second wire end chuck device 40 receives the end of the wire held by the first wire end chuck device 25, and holds the end of the wire. Since the second wire end chucking device 40 is located radially inward of the elliptical trajectory EO of the operation area of the roller 28, the second wire end chucking device 40 is provided with the roller 28 and the roller support shaft 32. It does not conflict with elliptical motion.

In addition, the second wire end chuck device 40 is positioned at the stationary position of the first wire end chuck device 25 (the position before moving in the A direction as shown in FIG. 7 or the B direction as shown in FIG. 8). Is the position on the opposite side of the elliptical orbit plane S where the elliptical orbit EO is formed. Then, the second wire terminal chuck device 40 receives the end of the wire held by the first wire terminal chuck device 25 from the first wire terminal chuck device 25, and The end of the wire is clamped on the side opposite to the wire end chuck device 25. That is, as shown in FIG. 9 and the like, the end of the wire 24 a is sandwiched by the first wire terminal chucking device 25, and the wire is wound around the peripheral surface of the toroidal core 21 in the initial stage for several turns. Will be In this case, the first wire terminal check device 25 is located above the elliptical orbital plane S as shown in FIG. On the other hand, as shown in FIG. 18 and the like, the wire 24 b has its end held by the A few turns of wire winding at the initial stage are performed on the circumference of a21. In this case, the second wire terminal chuck device 40 is located on the lower side, and holds the end of the wire 24 b on the side opposite to the first wire terminal chuck device 25 with respect to the elliptical orbital surface S. It is. As described later, by arranging the first wire terminal chuck device 25 and the second wire terminal chuck device 40 in this manner, the first wire 24 a is wound right around the toroidal core 21. In addition, the second wire 24b can be left-wound around the toroidal core 21 and a common mode toroidal coil can be formed.

As shown in FIG. 6, the second wire end chuck device 40 includes a pair of wire holding claws 41, 41 and a pair of wire holding claws opening and closing means for moving the pair of wire holding claws 41, 41 in the opening and closing direction. 4 and 2. The second wire end chuck device 40 is attached to the toroidal core holding device 6 via the rotary shaft 43, and the outside of the toroidal core holding device 6 can be rotated about the rotary shaft 43 by the piston cylinder device 44. . Further, above the toroidal core holding device 6, a wire card device 45 (FIG. 10) is arranged. The wire cutter device 45 has a normal structure having a pair of cutting parts, and is attached to the main body movably in the vertical and horizontal directions.

The wire cutter device 45 includes a first position for cutting a portion near the toroidal core 21 of the first wire held between the first wire end chuck devices 25, and a position close to the end of wire winding of the toroidal core 21. A second position for cutting the first wire, a third position for cutting the second wire wire bridged between the first wire end chuck device 25 and the second wire end chuck device 40, and a second wire A fourth position for cutting the portion of the second wire held by the terminal chuck device 40 near the toroidal core 21 and a fifth position for cutting the second wire near the end of the wire winding of the toroidal core 21. To cut the wire at each position. Here, the cutting at the first position and the fourth position is performed after the wire winding of several turns in the initial stage is completed, and then the wires 24 a and 24 b are connected to the first wire terminal chuck device 25 and the second wire. This is performed to separate from the terminal chuck device 25. In the cutting at the second position and the fifth position, unnecessary portions of the wires 24a and 24b are cut off after the predetermined number of evenings of wire have been wound. Done for. Further, the cutting at the third position is performed after the end of the wire 25b clamped by the first wire end chuck device 25 is received by the second wire end chuck device 40 from the first wire end chuck device. This is performed so that the end of the wire 25b is held by the second wire terminal chuck device 40.

Next, using the toroidal core winding machine of the present invention, a procedure for forming a common mode toroidal coil in which a right-handed portion is provided in half of the toroidal core and a left-handed portion is provided in half will be described.

The first wire 24 a guided from a wire source (not shown) is measured by the wire length measuring device 7 to a length required for a right-handed portion wound around half of the toroidal core 21. The measured first wire 24a is gripped at its distal end by a gripping means (not shown), and its proximal end is clamped by the first wire end chucking device 25. At this stage, the first wire 24a sandwiched by the first wire end chuck device 25 is positioned to one side from the toroidal core 21 above the toroidal core 21 as shown in FIG. You.

Next, when the wire length measuring device 7 is advanced in the direction indicated by the symbol A in FIG. 7, the first wire 24 a sandwiched by the first wire end chuck device 25 moves above the toroidal core 21. The toroidal core 21 is located from one side to the other. In the position shown in FIG. 7, the first wire 24a is located in front of the hook portion 35 of the fuse 36 rising through the toroidal core 21 and the core hole 21a.

Next, the wire length measuring device 7 is retracted in the direction indicated by the symbol B in FIG. 8, the hook 36 of the wire locking device 4 is raised through the core hole 21 a of the toroidal core 21, and the first wire 24 When the gripping means for gripping the distal end side of a is released, the first wire 24a is engaged with the hook portion 35 of the hook port 36 while one end of the first wire 24a is held between the first wire end chuck devices 25. Is stopped. Subsequently, when the hook 36 holding the first wire 24a with the hook portion 35 is lowered through the core hole 21a of the toroidal core 21, the first wire end chuck device 2 The first wire 24 a sandwiched between 5 is guided to the lower side of the toroidal core 21 through the core hole 21 a of the toroidal core 21.

Next, the roller 28 of the wire winding device 3 is moved elliptically in the direction indicated by arrow C in FIG. When the toroidal core 21 is rotated in the direction shown by the arrow D (see FIG. 9) by an amount corresponding to one pitch of the coil, the first wire end chuck device 25 is operated. The first wire 24 a sandwiched between is wound once around the peripheral surface of the toroidal core 21. By repeating this several times while holding the first wire 24a with the first wire end chucking device 25, a plurality of coil portions are formed on the peripheral surface of the toroidal core 21 as shown in FIG. You. Thus, the preparation stage (first stage) of winding the first wire 24a around the toroidal core 21 is completed.

Next, the wire cutter device 45 is moved to a first cutting position close to the toroidal core 21 shown in FIG. 10, and at this first cutting position, the wire cutter device 45 is lowered, and the toroidal core 21 is moved. The first wire 24a located on the side of the first wire end chucking device 25 from the coil wound around is cut to a fixed size. The remaining wires cut to the fixed size are discharged out of the machine by opening the first wire end chuck device 25.

As shown in Fig. 11, the first wire 24a separated from the first wire end chuck device 25 by cutting the wire 24a to a fixed size gives a constant feed rotation amount to the toroidal core 21 as shown in Fig. 11. By operating the hook load 36 of the wire locking device 4 and the mouthpiece 28 of the wire winding device 3 a predetermined number of times, the wire is wound around the peripheral surface of the toroidal core 21 a predetermined number of times.

While the winding operation of the first wire 24 a is being performed, the wire measuring device 7 measures the second wire 24 b having a length necessary to wind the left-handed wire around half of the toroidal core 21. The end of the lengthened and measured second wire 24 b is clamped by the first wire end check device 25, and the second wire 24 b is kept at that position.

After the first wire 24a has been wound around the toroidal core 21 a predetermined number of times, the second cutting position where the wire cutter device 45 cuts the right-hand end of the winding end as shown in FIG. , And cut the winding end of the right-hand part of the wire 24a into fixed lengths. As a result, as shown in FIG. 13, a right-handed portion of the coil 24 a is formed in half of the toroidal core 21.

Next, the toroidal core 21 having the right-handed portion of the first wire 24a is rotated from the position shown in FIG. 12 to the position shown in FIG. This rotation depends on the feed direction D It is performed by feeding 180 degrees in the opposite direction E.

Next, when the wire measuring device 7 is advanced in the direction indicated by the symbol A, the second wire 24 b sandwiched by the first wire terminal chuck device 25 is moved above the toroidal core 21 by the toroidal core 2. Located from 1 to the other side. In this position, the second wire 24 b is located in front of the hook 35 of the hook 36 rising through the core hole 21 a of the toroidal core 21.

Then, the wire measuring device 7 is retracted in the direction indicated by the arrow B in FIG. 16 and the hook 36 of the wire locking device 4 is lifted up through the core hole 21 a of the toroidal core 21. The second wire 24 b held between the wire end chuck devices 25 is locked to the hook portion 35 of the hook rod 36. When the hook rod 36 with the second wire 24 b locked to the hook portion 35 is lowered through the core hole 21 a of the toroidal core 21, the second wire pinched by the first wire end chuck device 25 is pulled down. The other end of the wire 24 b is guided to the lower side of the toroidal core 21.

Next, the wire measuring device 7 is advanced again in the direction indicated by the arrow A in FIG. 17, and the end of the second wire 24 b sandwiched by the first terminal chuck device 25 is connected to the second wire terminal chuck. It is clamped by the device 40. After the second wire end chuck device 40 has clamped the end of the second wire 24 b, the wire cutter device 45 is moved to the third cutting position near the second wire terminal chuck device 40 shown in FIG. 17. In this third cutting position, the wire cutting device 45 is lowered to remove the second wire 24 b located between the first wire end chuck device 25 and the second wire end chuck device 40. Disconnect. Next, as shown in FIG. 18, the first wire end chucking device 25 is retracted, and the toroidal core 21 is held while the end of the second wire 24 b is held by the second wire end chucking device 40. The second wire 24 b is wound around the toroidal core 21 several times while giving a constant rotation amount in the direction of arrow E to the toroidal core 21.

After winding the second wire 24 b around the toroidal core 21 several times, the wire cutter device 45 is moved to the fourth cutting position close to the toroidal core 21 shown in FIG. Cut the second wire 24 b following the beginning of winding of the part c After cutting the wire 24 b to a fixed size, give the toroidal core 21 a fixed amount of feed rotation in the opposite direction, Hook rod 3 6 and wire winding device 3 Roller 28 is operated a predetermined number of times. As a result, as shown in FIG. 20, the second wire 24 b is wound around the peripheral surface of the toroidal core 21 a set number of times.

After the second wire 24b has been wound around the toroidal core 21 a predetermined number of times, as shown in FIG. 21, the wire cutting device 45 cuts off the end of the left-hand winding portion at the end of the fifth winding. Move to the cutting position and cut the winding end of the left-handed portion of wire 24b into fixed lengths. As a result, as shown in FIG. 22, a common mode toroidal coil having a right-handed part in half of the toroidal core 21 and a left-handed part in half is formed.

According to the above-described toroidal core winding machine of the present application, the first wire 24 a can be wound right around the toroidal core 21, and the second wire 24 b can be wound left around the toroidal core 21. Thus, a common mode toroidal coil can be formed.

That is, when the first wire 24 a is wound right around the toroidal core 21, as shown in FIG. 9, the first wire 24 a is wound in the stage of winding the first wire 24 a around the toroidal core 21. While the end of 4a is held by the first wire end chucking device 25, the toroidal core 21 is rotated in the direction shown by the arrow D by an amount corresponding to one pitch of the coil. In this case, since the first wire end chucking device 25 is located above the elliptical orbital surface S in FIG. 9, by rotating the toroidal core 21 in the direction of arrow D, the roller 2 is wound by the wire winding device 3. Even when the ellipse 8 is moved, the mouthpiece 28 does not contact the first wire terminal chucking device 25, and the first wire 24a can be wound right around the toroidal core 21.

When the second wire 24 b is wound left around the toroidal core 21, as shown in FIG. 18, at the stage of winding the second wire 24 b around the toroidal core 21, as shown in FIG. The toroidal core 21 is rotated in the direction shown by the arrow E by an amount corresponding to one pitch of the coil while the end of 4b is held by the second wire end chuck device 40. In this case, since the second wire end chuck device 40 is located below the elliptical orbital surface S in FIG. 18, the toroidal core 21 is rotated in the direction of arrow E, so that the wire winding device 3 rotates the toroidal core 21. Roller 2 8 The second wire 24 b can be left-wound around the toroidal core 21 without contacting the second wire end check device 40. Further, since the second wire end check device 40 is located radially inward of the elliptical orbit EO of the operation area of the roller 28, the roller support shaft 32 and the roller 28 are elliptical as in this embodiment. Even in the case of the movement, the elliptical movement of the roller support shaft 32 does not conflict with the second wire end check device 40, and the second wire 24b can be wound left around the toroidal core 21.

In the above embodiment, the length measurement by the wire length measuring device 7 was performed twice, but the length measurement by the wire length measuring device 7 was performed only once, and the wire was halved to the left to the toroidal core 21. It is also possible to perform winding and rightward winding.

As described above, according to the present invention, by using both the first wire terminal chuck device and the second wire terminal chuck device and rotating the toroidal core in both directions, the left-handed wire is wound on half of the toroidal core. It is possible to manufacture a common mode toroidal coil in which a right-handed wire is wound in half.

Claims

The scope of the claims

1. A toroidal core holding device for holding the toroidal core;

A toroidal core rotating device for rotating the toroidal core in both circumferential directions, a first wire end chuck device disposed above the toroidal core holding device and holding an end of a wire;

A wire locking device for guiding a wire located above the toroidal core through the core hole of the toroidal core and below the toroidal core;

A wire winding device having a roller that moves in an elliptical orbit around the toroidal core holding device, and guiding a wire on the lower surface side of the toroidal core to the upper surface side of the toroidal core;

An end of the wire clamped by the first wire end chuck device is received from the first wire terminal chuck device, and the end of the wire on the side opposite to the first wire end chuck device with respect to a surface on which the elliptical orbit is formed. A second wire terminal checking device for holding the end of the wire;

A wire having an end held by the first wire end chuck device and a wire cutter device for cutting a wire having an end held by the second wire end chuck device. Winding machine.

2. The second wire end chuck device is located radially inward of the operating area of the roller moving in the elliptical orbit.

2. The toroidal coiling machine according to claim 1, wherein:

3. The wire is composed of two cut wires that have been measured and cut, and one cut wire is wrapped around the toroidal core that is held in the first wire end chuck device and rotates in one direction, Another one of the cutting wires is wound around the toroidal core which is sandwiched by the second wire terminal chuck device and rotates in the opposite direction, and the two cutting wires form a common mode toroidal coil.

The winding machine for a toroidal core according to claim 1, wherein:

4. Equipped with a pressing device having a pushing rod,

The pressing device presses the wire between the pushing port and an upper surface of the toroidal core so as to eliminate slack of the wire wound around the toroidal core.

The winding machine for a toroidal core according to claim 1, wherein:

5. The toroidal core rotating device rotates the toroidal core in one direction when winding the wire, the end of which is held by the first wire terminal chuck device, around the toroidal core, and the second wire terminal. The toroidal core is rotated in a direction opposite to the one direction when the wire whose end is clamped by the chuck device is wound around the toroidal core.

The winding machine for a toroidal core according to claim 1, wherein:

6. The wire cutter device is capable of cutting a wire placed between the first wire end chuck device and the second wire end chuck device.

2. The toroidal coiling machine according to claim 1, wherein: