JP2000251703A - Coil winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wind a wire around a coil bobbin so as to form a desired coil shape. SOLUTION: In a twisting machine 1, a coil wire 6 is formed in such a way that prescribed twisting is decided on the basis of the information of a winding condition given by a winding machine 2. A coil wire 6 formed in such a way that twisting is decided on the basis of the information given by the winding machine 2, is drawn in the winding machine 2 through a tension equipment 3. By the winding machine 2, the coil wire 6 formed on the basis of the information of the twist by the twisting machine 1 is wound around a coil bobbin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil winding device for forming a coil on a coil bobbin or the like, and more particularly, to a coil winding device suitable for forming a saddle type coil in a deflection yoke used for a color cathode ray tube. Related to wire devices.

[0002]

2. Description of the Related Art In a color television apparatus, a color cathode ray tube deflects an electron beam generated by an electron gun by a magnetic field generated by a deflection yoke to display a color image.

[0003] As shown in FIG. 8, a deflection yoke is disposed on a neck portion 102 of a cathode ray tube 101, generates a deflection magnetic field, and deflects an electron beam R emitted from an electron gun. The deflection yoke 103 has a deflection coil arranged inside a saddle-shaped coil bobbin. As shown in FIG. 9, a core 104 is arranged outside the coil bobbin. Further, the deflection yoke 103 has a back cover 10 to which a ring-shaped magnet 105, a band 106 and the like are attached.
7 are arranged.

FIGS. 10 and 11 show a coil bobbin 1 used for forming a deflection coil by section winding.
11 is shown. The coil bobbin 111 has a saddle shape, and has a so-called separator structure. The coil bobbins 111 having such a shape are combined into a substantially funnel-shaped coil bobbin, and are arranged in the vertical direction of the neck of the cathode ray tube.

The coil bobbin 111 has a plurality of substantially L-shaped projections (hereinafter, referred to as L-shaped projections) 114 formed on a funnel bend side end surface 112 and a neck bend side end surface 113. Further, on the inner surface of the coil bobbin 111, there are provided a plurality of slits 11 corresponding to the respective L-shaped projections 114 and arranged radially from the tube axis of the cathode ray tube and in which wires are arranged.
6 are formed.

[0006] Regarding the winding of the wire, the wire from the slit is connected to the L on the funnel bend side and the neck bend side.
Hooks on the L-shaped protrusions 114 and runs along the flanges on the funnel bend side and the neck bend side, and hooks on the predetermined L-shaped protrusions 114 to form corresponding slits 116.
Sent to. By performing such a winding operation for each slit, a coil is formed.

[0007] Such a wire winding is usually formed such that the coil shapes of the upper and lower coil bobbins 111 are line-symmetric with respect to the joint surface between the respective coil bobbins 111. In addition, by appropriately selecting a slit for winding the wire, the distribution of windings is adjusted and a deflection yoke that forms a desired deflection magnetic field is obtained.

FIGS. 12 and 13 show the coil bobbin 11.
1 shows an example in which a wire 121 is wound on the wire 1. FIGS. 12 and 13 show the coil bobbin 111 viewed from the funnel bend side, and show a case where the wire 121 is wound in the counterclockwise direction. Hereinafter, the case where the winding is made in the counterclockwise direction is called a forward winding direction, and the case where the winding is made in the clockwise direction is called a reverse winding direction.

Wire 121 for coil bobbin 111
As shown in FIG. 12, the wire wound along the slit is hooked on an L-shaped projection (not shown), and the wire is wound along the flange on the funnel bend side, as shown in FIG.
As shown in FIG. 13, the wire is hooked on a predetermined L-shaped projection provided on the opposite side and wound around a desired slit.

[0010] Here, the winding of the wire around the coil bobbin 111 is generally performed by a winding machine. The winding machine performs, for example, winding by a nozzle 122 while applying tension to the supplied wire. ing.

Further, the wire is usually formed by twisting a plurality of single conductors (hereinafter, referred to as a single conductor). It is possible to use a relatively thick single wire for winding, but in equipment with a high deflection frequency, etc., increase the wire diameter of the wound wire due to heat generation due to eddy currents in the wire. Therefore, it is necessary to use a wire having a small diameter. For example, a single wire with a diameter of 0.3 mm can be wound, but there is a problem of heat generation due to eddy current, etc.
It is necessary to twist and use multiple 15mm single wires. For this reason, practically, a wire made of a single wire is hardly wound around the coil bobbin 111.

For example, conventionally, when a coil bobbin has a separator structure, a coil is formed by winding a wire in a forward winding direction on an upper coil bobbin and winding a wire in a reverse winding direction on a lower coil bobbin. Was.

However, for example, as shown in FIG.
A case where the wire 121 along the slit is folded back by the L-shaped protrusion, and a case where the wire 121 wound along the funnel bend is folded by the L-shaped protrusion and sent to the slit as shown in FIG. Since the tension applied to the wire differs between and, there may be a difference in the winding position of the wire between the slits. This allows
The shape of the deflecting coil becomes left-right asymmetric.

For example, as shown in FIG. 14, wires are wound around upper and lower coil bobbins 111 ₁ and 111 ₂ in the normal winding direction (FIG. 14).
(In the direction of arrow X shown in the figure), the upper and lower coil bobbins 111 ₁ and 111 ₂ each have a position larger than the position of the wire in the slit when the wire is folded back by the L-shaped projection.
The position of the wire in the slit that is fed back from the L-shaped projection is positioned farther from the joining surface 123. As a result, since the winding procedure of the upper coil bobbin 111 ₁ and the lower coil bobbin 111 ₂ is made axially symmetric, the upper and lower coil bobbins 111 ₁ ,
111 _second coil shape can no longer become axisymmetric about the joint surface 123.

If the bonding surface 123 is asymmetrical as shown in FIG. 14, as shown in FIG. 15, three electron beams R corresponding to red, green and blue emitted from the electron gun respectively. _R, R _G, is a positional relationship in which the deflection yoke is twisted relative to R _B, a positional relationship thereby twisted even deflection magnetic field. Due to the electron beam deflected by the deflection yoke having such a positional relationship, as shown in FIG. 16, a substantially arc-shaped color shift in which both ends are shifted in the vertical direction occurs on the screen.

[0016] For this reason, in recent years, as shown in FIG. 17, winding the wire Gyakumaki direction (arrow Y direction indicated in FIG. 17) on the upper side of the coil bobbin 111 _1, the lower side of the coil bobbin 111 ₂ Wind the wire in the normal winding direction
A deflection coil is formed to prevent the symmetry of the deflection magnetic field from being lost. That is, when the wire is wound in two directions, the wire twist direction is made different depending on the winding direction, so that the line symmetry is secured at the joint surface with the upper and lower coil bobbins.

[0017]

[SUMMARY OF THE INVENTION] As described above, winding a wire in Seimaki direction on the upper side of the coil bobbin 111 _1, when winding the wire in Gyakumaki direction the coil bobbin 111 _{and second} lower, twisting Two types of wires having different directions are prepared in advance, and they are selectively used and wound according to the winding direction and the like. Specifically, a bobbin on which two types of wires in the twist direction are wound is prepared, and a wire in the corresponding twist direction is appropriately pulled out from the bobbin in accordance with the winding direction. Winding had been made.

However, when winding is performed by using two kinds of wires prepared in advance, there are the following problems.

It is necessary to provide two winding machines, a winding machine dedicated to the forward winding direction and a winding machine dedicated to the reverse winding direction.

When a single winding machine winds wires having different twisting directions on each coil bobbin, it is necessary to replace the wires with the winding machine for each winding direction.

Further, since it is necessary to prepare a plurality of types of wires in advance, management becomes troublesome.

As described above, even when the winding is performed in the normal winding direction and the reverse winding direction ignoring the asymmetry for the reason that the management is troublesome or the like, the winding is performed using only the wire having one twist direction. In some cases. However, the upper and lower coil bobbins 11
1 _1, 111 to ₂ both, if the twisting direction is wound in one direction of the wire, for the following reasons, after all, no longer be the coil shape axisymmetric about the bonding surface 123.

[0023] For example, as shown in FIG. 18, the upper side of Bobinkoiru 111 _1, is folded back from the L-shaped projection on the wire 121 sent to the slit, to try Yurumo single wire in a direction to return the twist Due to the joining surface 123
18 (in the direction of arrow F shown in FIG. 18), whereby a coil is formed in the slit in a direction biased toward the joining surface 123. Incidentally, the same reason, also in Bobinkoiru 111 ₂ lower, force in a direction away from the joint plane 123 (direction of arrow F shown in FIG. 18) acts on the wire 121, to a position spaced away from the bonding surface 123 A coil is formed unevenly. For example, a force in the direction of arrow F in FIG. 19 acts on the wire 121 due to the loosening of the single wire.

In the case where the wire is wound in the normal winding direction and the reverse winding direction by a wire twisted in one direction, the twist may be further twisted or the twist may be loosened. Shape asymmetry also occurs.

Further, it is necessary to change the type of wire even when the deflection frequency is different. For example, the horizontal deflection frequency is
The frequency is 15.75 kHz, which is 33.5 kHz in the case of a so-called high-definition television receiver. When the horizontal deflection frequency is different as described above, winding is performed by changing the type of wire and the number of turns.

More specifically, in order to cope with a high frequency, it is necessary to generate the energy required to deflect the electron beam without increasing the power supply voltage. To increase. Here, since the impedance is proportional to the square of the number of turns of the coil, the impedance is reduced by reducing the number of turns of the coil. For example, if the frequency is 2
Double the number of turns to 1/4.

On the other hand, in order to cope with a high frequency, the current value increases as a result. However, the amount of heat generated by the wire increases. For this reason, in general,
As described above, when the impedance is lowered by reducing the number of turns of the coil, it is necessary to make the wire thicker to suppress the heat generation. However, if the wire diameter is simply made larger, the wire becomes harder, and it becomes difficult to wind the wire around the coil bobbin. Further, there arises a problem that eddy current loss occurs. Therefore, usually, a wire is formed by twisting a plurality of single wires, and by increasing the number of single wires, the wire diameter of the wire is increased. Note that the thickness of the wire diameter is limited by the shape of the coil bobbin and the like.

As described above, when the deflection frequency is different, it is necessary to change the type of wire and the like, and it is necessary to prepare a plurality of types of wires in advance. there were.

Further, if the twist pitch is too tight, the wire becomes hard, and if it twists too much, the wire is liable to disperse. In such a case, it becomes an obstacle in winding. Note that the optimum pitch also changes depending on the number of twisted single wires.

The present invention has been made in view of the above circumstances, and has as its object to provide a coil winding device for winding a wire on a coil bobbin so as to have a desired coil shape.

[0031]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a coil winding device according to the present invention comprises: a wire forming means for twisting a plurality of single conductors to form a stranded wire; Winding means for winding the stranded wire formed by the means around the coil bobbin. Then, in the coil winding device, the wire forming means determines the twisting method according to the information output from the winding means according to the state of the winding in the winding means.

Thus, the winding device can perform the winding on the coil bobbin with the wire material whose twisting method is appropriately determined when winding the coil bobbin.

[0033]

Embodiments of the present invention will be described below in detail with reference to the drawings. This embodiment is a coil winding system for winding a wire on a coil bobbin having a separator structure for forming a coil in a deflection yoke.

As shown in FIG. 1, the coil winding system comprises a twisting machine 1 for twisting a plurality of single wires (hereinafter referred to as a single wire) 4 to form a twisted wire 6;
The winding machine 2 is configured to wind a wire 6 formed by being twisted by the twisting machine 1 around a coil bobbin, and a tension device 3 that applies tension to the wire 6 supplied from the twisting machine 1 to the winding machine 2. I have.

The twisting machine 1 has a plurality of single wire winding bobbins 5 around which a single wire 4 is wound. This twisting machine 1
Is configured such that the stranded wire pitch of the single wire 4 and the like are controlled based on control information from the winding machine 2. Specifically, the twisting machine 1 determines the twisting method such as the twist pitch, the twisting direction, the number of the single wires 4 to be twisted, and the like based on the control information from the winding machine 2.

The term "twist pitch" used herein refers to the length of a wire formed of a plurality of single wires when one arbitrary single wire constituting the wire is twisted and makes a round, for example, 100 mm.
In the case of the above-mentioned wire, when any single wire makes 10 turns in the 100 mm wire, the twist pitch is 100/1
0 = 10 mm.

The number of twists is the number of single wires constituting one wire 6. For example, a horizontal deflection coil used in a so-called high-definition television is formed by a wire in which 40 single wires are twisted, and in a computer monitor, the horizontal deflection coil and the vertical deflection coil are 20 to 3 respectively.
Zero and about ten single wires are formed by twisted wires.

For example, in the twisting machine 1, the single wire winding bobbin 5 is mounted on a rotary table (not shown), and the rotary table is rotated to twist the single wire 4 to form the wire 6. For example, the switching of the twisting direction is performed by changing the rotation direction of the rotary table described above, and when changing the twisting pitch, the rotation speed of the rotary table is changed.

The tension device 3 comprises a twisting machine 1 and a winding machine 2
The tension is applied to the twisted wire 6 sent from the twisting machine 1 to the winding machine 2. The tension device 3 includes, for example, two feed rollers 7 and 8 as shown in FIG. For example, the wire 6 from the twisting machine 1 is pulled out by the first roller 7, and tension is applied to the wire 6 drawn into the winding machine by the second roller 8.

The winding machine 2 is a device for winding the wire 6 sent from the twisting machine 1 on the coil bobbin 111 having the separator structure shown in FIGS. The winding machine 2 winds a supplied wire around a coil bobbin while applying tension by a nozzle (not shown).

For example, the winding machine 2 has a so-called NC (nume
The wire is wound around the coil bobbin by controlling the winding operation of the nozzle by rically controll).

The winding machine 2 outputs various information on the winding of the wire 6 to the twisting machine 1. Specifically, the following information is output to the twisting machine 1.

For example, information for switching the twist direction of the wire according to the winding direction of the wire is output to the twisting machine 1.

Further, since the number of twists differs depending on the type of the deflection yoke, information on the number of twists is output to the twisting machine 1. In addition, since the diameter of the single wire may be changed,
The information on the diameter of the single wire is output to the twisting machine 1.

Also, if the twist pitch is small in spite of the large number of twists, the twist itself becomes rigid. Therefore, if the number of twisted single wires is large, the twist pitch is increased (the twist is loosened).
If the number is small, information that the pitch is reduced (strength is increased) is output to the twisting machine 1.

The information on the length of the wire required by the winding machine 2 is output to the twisting machine 1.

The above information is transmitted from the winding machine 2 to the twisting machine 1
Is output to For information on how to twist the wire,
It is not limited to the information described above. Further, in this example, the information regarding the twisting method is output from the winding machine 2 to the twisting machine 1. For example, the twisting machine 1 may perform the winding of the wire based on information such as the winding operation of the winding machine 2. It is also possible to appropriately determine the direction, and to provide a control unit for centrally controlling the winding machine 2 and the twisting machine 1, thereby controlling the twisting method of the wire of the twisting machine 1. .

The following can be achieved by the coil winding system having the above-described configuration.

For example, when the winding machine 1 performs winding on the upper coil bobbin, for example, information indicating that winding is to be started on the upper coil bobbin, information on starting winding in the reverse winding direction, Alternatively, information on a wire for enabling generation of an optimum coil shape such as required information on a predetermined twisting direction is output to the twisting machine 1.

The twisting machine 1 determines a predetermined twisting method based on the above information from the winding machine 2 and forms the wire 6.
Then, the wire 6 formed in such a manner that the twisting method is determined based on the information from the winding machine 2 is drawn into the winding machine 2 via the tension device 3. In the winding machine 2, the wire 6 formed by the twisting machine 1 based on the information on twisting
To perform winding on the coil bobbin.

Specifically, the twisting machine 1 can form wires 6 having different twisting directions according to information from the winding machine 2 as shown in FIGS. 2A and 2B. . Then, in the winding machine 2, as shown in FIGS. 3 to 6, the nozzle 11 is controlled to perform winding on each of the coil bobbins 111 ₁ and 111 ₂ using the wire 6 appropriately generated in the twisting machine 1. As described above, by using the coil 5 having a different twisting direction for each winding direction, a deflection yoke having a highly symmetric coil shape can be manufactured.

For example, conventionally, as shown in FIG.
Although coils biased to the bonding surface 123 side in the upper Bobinkoiru 111 _first slit has fallen is formed,
By switching the twisting direction of the wire in the reverse winding direction, the force in the joint surface direction does not act on the wire, so that it is possible to form a coil that is not biased in the slit.

The coil winding system does not need to include a plurality of winding machines according to the winding direction as in the related art. It is not necessary to replace the wire supplied to the winding machine when winding in the reverse winding direction, and the coil can be wound on the coil bobbin.

Further, the twisting method is switched by the twisting machine 1 based on the information from the winding machine 2 by the coil winding system. Therefore, in the winding machine 2, the wire used is switched between the normal winding direction and the reverse winding direction. You will be able to switch easily.

The coil winding system eliminates the need to prepare wires for each number of twists in advance. That is, there is no need to prepare a plurality of types of wires in advance, and there is no need to manage the wires.

Since the wire 6 from the twisting machine 1 is used instead of the wire wound around the bobbin or the like, so-called kink can be prevented. The kink means that the wire unwound from the bobbin has been wound on the bobbin so far, and as shown in FIG. 7 (A), has a so-called pig tail shape, and is pulled, for example, from this state. , As shown in FIG. 7 (B). In this case, the kink may damage the coating or cut the wire. The coil winding system can also prevent such kink from occurring.

The coil winding system according to the embodiment of the present invention can perform winding other than the above-described coil bobbin for the deflection yoke. For example, it can be wound around a drum-shaped core or bobbin.

[0058]

The coil winding apparatus according to the present invention comprises a wire forming means for twisting a plurality of single-wire conductors to form a stranded wire, and winding the stranded wire formed by the wire forming means on a coil bobbin. And a wire forming means,
The twisting method is determined according to the information output from the winding means according to the state of the winding in the winding means.

Thus, in the winding device, when the coil is wound on the coil bobbin, the twisting method is appropriately determined, and the coil can be wound on the coil bobbin with the wire.

Therefore, for example, the winding device does not include a plurality of winding devices, and it is not necessary to prepare a stranded wire to be wound on the coil bobbin in advance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a coil winding system according to an embodiment of the present invention.

FIG. 2 is a plan view showing wires having different twist directions.

FIG. 3 is a front view showing an operation when winding a wire around a coil bobbin in a normal winding direction.

4 is a front view showing an operation when winding a wire around a coil bobbin in a forward winding direction, in which a nozzle to which a magnet is supplied is moved in a forward winding direction as compared with the state shown in FIG. 3 described above. FIG.

FIG. 5 is a front view showing an operation of winding a wire around a coil bobbin in a forward winding direction, in which a nozzle to which a magnet is supplied is moved in a forward winding direction from the state shown in FIG. 4 described above. FIG.

FIG. 6 is a front view showing an operation when winding a wire around a coil bobbin in a forward winding direction, in which a nozzle to which a magnet is supplied is moved in the forward winding direction from the state shown in FIG. 5 described above. FIG.

FIG. 7 is a front view showing the wire in a so-called kink state.

FIG. 8 is a perspective view showing a color cathode ray tube.

FIG. 9 is a side view showing a deflection yoke.

FIG. 10 is a perspective view showing a shape of a coil bobbin having a separator structure and enabling section winding.

FIG. 11 is a front view showing the coil bobbin as viewed from the funnel bend side.

FIG. 12 is a front view showing an operation when winding a wire around a coil bobbin, the wire being wound around a groove closest to a vertical axis being hooked on an L-shaped projection; is there.

FIG. 13 is a front view showing an operation when winding a coil bobbin around a wire, which is hooked on an L-shaped projection and wound around a desired slit.

FIG. 14 is a front view showing the winding of the wire in the reverse winding direction on each of the coil bobbins that are divided into upper and lower portions forming a deflection yoke.

FIG. 15 is a front view showing a state in which a deflection yoke is twisted with respect to three electron beams.

FIG. 16 is a front view showing an image display when the deflection yoke is twisted with respect to three electron beams.

FIG. 17 is a front view showing a winding of a wire in a forward direction on an upper coil bobbin and a winding of a magnet in a reverse direction on a lower coil bobbin;

FIG. 18 is a front view showing a case where a coil is formed biased on a slit due to a force for returning the twist of the wire.

FIG. 19 is a plan view showing the direction of the force generated on the wire due to the untwisting force.

[Explanation of symbols]

 1. Twisting machine, 2 winding machine

Claims (4)

[Claims] 1. A wire forming means for twisting a plurality of single wires to form a stranded wire, and winding means for winding a stranded wire formed by the wire forming means on a coil bobbin, A wire winding device, wherein the wire forming means determines a twisting method according to information output from the winding means according to a state of a winding in the winding means. 2. The coil winding device according to claim 1, wherein the coil bobbin has a coil formed by section winding. 3. The coil winding device according to claim 1, wherein the winding means determines a twisting direction, a twist pitch, and the number of the conductive wires to be twisted as a twisting method. 4. The winding means winds a wire in a forward or reverse direction with respect to the coil bobbin, and the wire forming means responds to information on a winding direction outputted from the winding means. The coil winding device according to claim 1, wherein a twist direction of the conductor is determined.