JPH08306568A - Winding method and winding device of shape coil - Google Patents

Abstract

PURPOSE: To provide a winding method and a winding device of a shape coil which enables a line material to be wound on an aimed position. CONSTITUTION: This device has a projection die 2 and a recess die 3 combined for forming a clearance 4 whereon a line material 5 is wound, a flyer 1 which rotates around the combined projection die 2 and recess die 3 while drawing out the line material 5 to the clearance 4 and servo-motors 32, 39 which oscillate the combined projection die 2 and recess die 3 around a spherical part 20 according to rotation of the flyer 1 and set an entering angle of the line material 5 which enters the clearance 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding method and a winding device for a deformed coil represented by a coil of a deflection yoke.

[0002]

2. Description of the Related Art There is known a deflection yoke which deflects an electron beam of a cathode ray tube and applies it to a fluorescent body to display an image. A deformed coil such as a saddle type coil is used for this deflection yoke. . In the manufacture of odd-shaped coils with shapes other than ordinary cylindrical and prismatic shapes, including saddle type coils,
Usually, a convex type and a concave type conforming to the coil shape are prepared, and these are butted to form a space around which a winding is wound, and a wire is supplied to this space to manufacture a coil. In Figure 7,
The structure of a typical conventional winding device is shown. This winding device has a mold 901 corresponding to a convex mold and a mold 902 corresponding to a concave mold. And the nozzle 90
A wire is supplied from 3, and the wire is slid on a guide block having an appropriate curvature, dropped, and wound.
When the wire is wound, the guide block comes into contact with the wire, so that a frictional force is generated between them.

That is, in this conventional example, when the frictional force becomes smaller than the tension applied to the wire rod, the wire rod slides down on the guide block and is wound in the space. It has become. Such a scheme
For example, it is described in Japanese Patent Laid-Open No. 4-47635.

On the other hand, in a display device using a cathode ray tube, there is an increasing demand for a high quality image corresponding to a personal computer, a CAD display device, a high definition television, etc. It is getting smaller. Also, in recent years, the display screen has become larger.

In such a situation, it becomes difficult to adjust the magnetic field of the deflection yoke for deflecting the electron beam to the correct position, and the adjustment time becomes much longer than that of the conventional cathode ray tube for television.

This magnetic field adjustment is for calibrating the variation of the magnetic field distribution, and a major factor that influences this variation is the winding state of the coil forming the deflection yoke.

[0007]

However, in the above-mentioned conventional example, when the wire rod falls along the guide block, the above-mentioned frictional force acts, so that the wire rod having two sides of a triangle is short. The phenomenon of becoming one side of a triangle constantly occurs in time. That is, at the moment when this phenomenon occurs, the tension of the wire rod becomes zero or minus (that is, the tension is not present or is loose). When winding is performed in such a situation, the position of the wound wire material does not become constant for each coil, and accordingly,
The magnetic field distribution also varies.

Under such variations, the R (red), G (green), and B (blue) electron beams of the three colors of the color cathode-ray tube do not pass the orbits as designed, and a color shift occurs.
If the color shift occurs, desired display performance cannot be obtained.

The above-mentioned magnetic field adjustment is generally carried out by attaching a ferrite sheet or a small electromagnetic soft iron to the inner surface of the coil to partially correct the magnetic field. As the pixel pitch decreases, the adjustment time increases. Further, this work needs to deal with various cases, and therefore the technique belongs to know-how and requires skilled work.

In view of the above problems, it is an object of the present invention to provide a winding method and a winding device for a deformed coil capable of winding a wire at a desired position.

[0011]

According to a first aspect of the present invention for achieving the above object, in a winding device for a modified coil, the coils are combined to form a space in which a wire is wound. A convex type and a concave type, a flyer that rotates around the combined convex type and concave type while feeding the wire rod into the space, and the combined convex type and concave type around the predetermined support point of the flyer. A winding device for a deformed coil, comprising: a swinging mechanism that swings according to rotation to set an entry angle of a wire rod that enters the space.

According to a second aspect of the present invention for achieving the above object, in the first aspect, a plurality of movable pieces for setting the shape of the space and positions of these movable pieces are controlled. And a mechanism for setting the distribution of the wire rods of the odd-shaped coil, the winding apparatus for the odd-shaped coil being provided.

According to a third aspect of the present invention for achieving the above object, in the first or second aspect, at least one of the convex mold and the concave mold is movable in a predetermined direction. A guide portion is provided, and the guide portion is
A winding device for a deformed coil is provided, which guides the drawn wire in the predetermined direction.

According to a fourth aspect of the present invention for achieving the above object, in the first, second or third aspect,
There is provided a winding device for a deformed coil, wherein the deformed coil is a saddle type coil having two fringe portions.

According to a fifth aspect of the present invention for attaining the above-mentioned object, winding of a deformed coil for winding a wire in a space for molding a deformed coil formed by a convex shape and a concave shape In the method, there is provided a method for winding a deformed coil, characterized in that the convex shape and the concave shape are swung about a predetermined supporting point to set an angle of penetration of the wire into the space.

[0016]

According to the present invention, since the angle at which the wire rod enters the space formed by the convex and concave molds can be set, the winding of the wire rod proceeds without contacting these molds with the wire rod. Can be made.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, in the winding device of this embodiment, a convex mold 2 and a concave mold 3 are combined on the extension of the axis of the flyer 1 to form a gap 4 for molding a coil. ing.

The wire 5 passes through a hole 6 provided at the center of the axis of the flyer 1, and is rotatable by rollers 7a, 7b, 7c, 7
It is guided at d and is wound around the gap 4. Flyer 1
Are rotatably supported by the support 10 by bearings 8a and 8b. The support 10 is fixed to the base 9.

A gear 11 is fixed to one end of the flyer 1. A pinion 12 meshes with the gear 11. The pinion 12 is fixed to the shaft of the servomotor 14. The servomotor 14 is attached to the support body 10 by a bracket 13. The servo motor 14 is provided with a rotary encoder (not shown). The rotary encoder detects the rotation phase of the flyer 1.

Bearings 15a and 15b are provided at the other end of the rotary shaft of the flyer 1. The shaft 16 is supported by these and can stand still regardless of the rotation of the flyer 1. Further, the shaft 16 is provided with a taper portion 17, and the taper portion 17 holds a taper shaft 18. A spherical seat 19 is formed on the other end of the taper shaft 18, and holds a spherical portion 20 provided on the other end of the concave mold 3. The air cylinder 23 can push the top 22 outward. That is, the convex mold 2 is retracted to move the coil 21
If the top 22 is pressed against the spherical seat 19 using the air cylinder 23 in advance when taking out, the rotation of the concave mold 3 due to its own weight can be suppressed.

The above-mentioned convex mold 2 and concave mold 3 are butted against each other on the extension of the axis of the flyer 1, and their mutual movements in the rotational direction are restricted by the pins 24a and 24b. Pins 24a, 2
The air cylinders 4a and 4b are configured so that they can be taken in and out with the air cylinders 25a and 25b without any play in the concave direction.

An arcuate rail 30 is attached to the convex mold 2, and the teeth of the inner peripheral gear are formed inside thereof. The pinion 31 meshes with this tooth. The rail 30 is slidably engaged with the slider 33.
The pinion 31 is rotated by the servo motor 32 fixed to the slider 33 to move the rail 30 in the longitudinal direction. As a result, the convex mold 2 and the concave mold 3 swing vertically in the integrated state.

The slider 33 is fixed to an arcuate rail 34 having a circular orbit in a direction perpendicular to the rail 30. The rail 34 is a slider 3 fixed to a support 36.
5 is slidably retained. An arcuate rack 37 having the same curvature as the rail 34 is fixed to the rail 34. The rack 37 has a pinion 38.
Are in mesh. The pinion 38 is a servo motor 39.
Is fixed to the shaft of the convex mold 2 and the concave mold 3 described above.
Oscillates horizontally as the servomotor 39 rotates.

Sliders 41a and 41b are attached to a base 40 that supports the support 36, and the support 3
6 is guided along the guide 42 via these sliders. Further, the base 40 is provided with a nut 43 that meshes with the screw 44. When taking out the odd-shaped coil 21 whose winding is completed from the convex mold 2 and the concave mold 3, a screw 4 is used.
4 is rotated in a predetermined direction to separate the convex mold 2 and the concave mold 3.

FIG. 2 is a perspective view of a deflection yoke coil, which is a typical variant coil. This coil generates a magnetic field from the outside of the glass constituting the cathode ray tube toward the inside where the electron beam flies, and changes the magnetic field to realize scanning by the electron beam.

At this time, it is the portions 101a and 101b connecting the fringe portions 102 and 103 that largely contribute to the magnetic field, and in the conventional coil production, the phenomenon described in the "prior art" occurs. That is, when the wire rod 5 is wound, a frictional force is generated between the wire rod 5 and the guide member, and when the wire rod 5 has no tension or is extremely loose, winding is performed. Under such a situation, the generated magnetic field differs for each coil. That is, in order to bring out the performance as designed, it is necessary to spend a lot of time to correct the magnetic field with a ferrite piece or the like to bring the image quality to a predetermined level.

Therefore, in this embodiment, 101a in FIG.
When performing winding of the portion 101b, the servomotors 32 and 39 are controlled so that the wire 5 fed from the rotating flyer 1 does not contact the convex mold 2 and the concave mold 3. The servo motors 32 and 39 are driven according to a predetermined program with the pulse generated by the rotary encoder of the servo motor 14 as a reference. This program is executed by the control device 800.

That is, as in this embodiment, the coil 10
If the 1a part and the 101b part are wound in an aligned manner, the adjustment time of the magnetic field can be minimized.

FIG. 3 is a view showing a cross section of the above-mentioned two coils which are opposed to each other and assembled in the cathode ray tube 104. As shown in the figure, the coils 101a and 101b are generally designed to have a small number of windings in the central portion and a large number of windings in the portion close to the counterpart coil.

Therefore, in this embodiment, in order to cope with such a line distribution, a female pattern i201, as shown in FIG.
A female mold ii 203 and a female mold iii 205 are provided. Female i20
1, the female mold ii203 and the female mold iii205 are slidably attached to the concave mold 3, and these are respectively driven by the drive source 2
It is driven by 02, 204 and 206. Each drive source is a unit that performs motion conversion with a built-in ball reel in order to extract the rotational motion of the motor as a linear motion. Note that FIG. 4 shows a state in which the wire is wound up to 1, 2, 3, ...
1, the female mold ii203 and the female mold iii205 are arranged at the positions shown in FIG. Female type i201, female type ii203, female type iii205
Is controlled so that the wire 5 always comes to a predetermined position in the gap 4 as the winding progresses.

Further, in the present winding device, as shown in FIGS. 1 and 5, a guide A210 for guiding the wire rod 5 is provided.
a, a guide B210b, a rack A211a and a rack B211b for driving them in a direction parallel to the axis of the flyer 1, and a pinion A212a and a pinion B212b that mesh with the rack A211a and the rack B211b.
Servo motor A213a and servo motor B213b for driving these are provided. The guide A 210a and the guide B 210b are for winding the fringe portions of FIG. 2 in an aligned manner, and are provided above and below the convex die 2 and the concave die 3 corresponding to both fringe portions of 102 and 103 of FIG. .

FIG. 6 shows the portion along the cathode ray tube (101a, 101 in FIG. 2) which plays the most important role in forming the magnetic field.
It is explanatory drawing of the process of the alignment winding of b). Each component shown in FIG. 6 is as described in FIG.

The method of aligned winding according to the present invention will be described below with reference to these drawings.

First, the end of the wire 5 supplied from the flyer 1 is temporarily fixed to a part of the concave mold 3 to prepare the winding. At this time, the spacer 208 is inserted into one of the gaps 4.
The spacer 208 can be moved by the driving source 209.

Next, the flyer 1 is rotated so that the convex mold 2,
Wires 5 are wound in the gap 4 formed by the concave mold 3 in the order of 1 to 8. In addition, when the winding amount is as shown in FIG.
1, the female model ii203, the female model iii205, the drive source 202,
Using 204 and 206, it is stopped at the position shown in FIG. Further, the servo motors 32 and 39 in FIG. 1 are controlled so that the angle of penetration of the wire 5 into the gap 4 becomes θ ₁ . All of these operations are controlled by the control device 800 based on the pulse output from the rotary encoder described above.

Next, a female mold ii203 and a female mold iii205
Is moved to the state of FIG. 6 (b), and the winding already wound
Wind 9, 10, 11 over 5, 6, 7, 8. At this time,
The angle of the flyer 1 is changed to change the penetration angle of the wire 5 into the gap 4 from θ ₁ to θ ₂ .

Such operation / control is carried out by referring to FIG.
Also for (f). For the penetration angle, θ ₃ to θ ₅
Change up to. In the middle of the winding, partition pins are inserted as needed.

Regarding the windings of the fringe portions 102 and 103 of FIG. 2, the guide A210a and the guide B2 of FIG.
10b is used. Specifically, the wire rod 5 is sandwiched by these guides, and the wire rod 5 is horizontally moved in cooperation with the rotational movement of the flyer 1 to align the wire rod 5 at a predetermined position. All of these operations are performed by program control synchronized with the rotation angle of the flyer 1.

[0040]

As described above, according to the present invention, it is possible to align the wire rod of the portion forming the magnetic field at a predetermined position when winding the odd-shaped coil. Can be produced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of a winding device according to the present invention.

FIG. 2 is a perspective view of a deflection yoke coil, which is an example of a modified coil targeted by the winding device according to the present invention.

FIG. 3 is an explanatory view showing a part of the variant coil of FIG. 2 attached to a cathode ray tube.

4 is a configuration diagram of a plurality of female molds provided in the concave mold of FIG.

5 is a configuration diagram of guides provided above and below the convex type and the concave type of FIG.

FIG. 6 is an explanatory diagram showing the relationship between the position of the female mold of FIG. 4 and the winding.

FIG. 7 is a perspective view showing an example of a conventional winding device.

[Explanation of symbols]

1 ... Flyer, 2 ... Convex type, 3 ... Concave type, 4 ... Gap,
5 ... Wire rod, 6 ... Hole, 7a-7d ... Roller, 8
a, 8b, 15a, 15b ... Bearings, 9, 40 ...
Base, 10, 36 ... Support, 11 ... Gear, 1
2, 31, 38 ... Pinion, 13 ... Bracket, 1
4, 32, 39 ... Servo motor, 16 ... Axis, 17 ...
Tapered portion, 18 ... Tapered shaft, 19 ... Spherical seat, 20
... Ball part, 21 ... Coil, 22 ... Top, 23, 25
a, 25b ... Air cylinder, 24a, 24b ... Pin,
30, 34 ... Rails, 33, 35, 41a, 41b
... Slider, 37 ... Rack, 42 ... Guide, 43
… Nuts, 44… Screws, 104… Braun tubes, 8
00 ... Control device, 901, 902 ... Mold, 903
…nozzle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Ota 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Inside the Hitachi, Ltd. Institute of Industrial Science (72) Inventor Tatsuo Horiuchi 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi Ltd., Production Engineering Laboratory (72) Inventor Naoki Hosoya, 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture Production Engineering Laboratory, Hitachi Ltd. (72) Inventor Shinya Yoshida, Hayano Mobara, Chiba Prefecture 3300, Hitachi, Ltd. Electronic Devices Division (72) Inventor, Mitsugu Ura, Kitano, No. 1, Mashiro, Masaki, Mizusawa, Iwate Prefecture, Hitachi Mizusawa Electronics, Ltd.

Claims (5)

[Claims] 1. A winding device for a deformed coil, comprising a convex shape and a concave shape combined to form a space in which a wire is wound, and a combined convex shape and a concave shape while feeding the wire into the space. A flyer that rotates around the circumference of the flyer, and the combined convex and concave molds around a predetermined supporting point as the flyer is rotated according to the rotation of the flyer to set the angle of penetration of the wire rod that enters the space. A winding device for a deformed coil, comprising: a mechanism. 2. The apparatus according to claim 1, further comprising a plurality of movable pieces for setting the shape of the space, and a mechanism for controlling the positions of these movable pieces and setting the distribution of the wire rods of the deformed coil. Winding device for odd-shaped coils. 3. The guide unit according to claim 1, wherein at least one of the convex mold and the concave mold is provided with a guide unit that is movable in a predetermined direction, and the guide unit preliminarily removes the wire rod fed out from the guide unit. A coil winding device for a deformed coil characterized by guiding in a defined direction. 4. The winding device for a deformed coil according to claim 1, 2 or 3, wherein the deformed coil is a saddle type coil having two fringe portions. 5. A method of winding a modified coil for winding a wire in a space for molding a modified coil, which is formed by a convex shape and a concave shape, comprising: A winding method for a deformed coil, which comprises swinging the wire around the center and setting an angle of penetration of the wire into the space.