JPH11329237A - Saddle-shaped coil manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing device for a saddle-shaped coil free from defects in a winding-wire. SOLUTION: This device has a female die 2 and a male die 3 which form a saddle-shaped winding-wire space. A saddle-shaped first regulating surface 21 and planar second regulating surfaces 23, 24 are formed on the female die 2, while pad metals 4, 40 positioned at both ends of the winding-wire space are protrusively provided to the male die 3. Die edge parts 26 formed between the first regulating surface 21 and the second regulating surfaces 23, 24 of the female die 2 and contacting to the winding-wire, and pad metal edge parts 43 formed between the opposite surface of the pad metal 4 to the female die and both sides sandwiching the opposite surface, and contacting to the winding- wire are respectively formed by smooth convex curved surfaces. Projecting parts 42 which project towards the first regulating surface 21 beyond the die edge parts 26 are formed on main body 41 of the pad metals 4, 40 which are to make contact with the second regulating surfaces 23, 24 of the female die 2. Thus, the pad metal edge parts 43 are formed on the projecting parts 42, thereby spaces are formed between the die edge parts 26 and the pad metal edge parts 43.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a saddle coil of a deflection yoke mounted on a cathode ray tube such as a television receiver or an image monitor, and more particularly to a saddle coil having no possibility of damaging a coil winding in a winding process. The present invention relates to an apparatus for manufacturing a mold coil.

[0002]

2. Description of the Related Art As shown in FIGS.
(1) is a pair of magnetic field forming portions (13) and (13) extending in the electron beam traveling direction and a magnetic field forming portion (13) and (13) extending on a plane perpendicular to the electron beam traveling direction. A window (14) is formed at a central portion, which includes a large-diameter side transition portion (11) and a small-diameter side transition portion (12) for connecting ends in the same direction to each other.

The saddle coil (1) is manufactured using a female mold (7) and a male mold (8) shown in FIG. For the male type (8), the window (1
Pillow (81) and a pair of buckles (9) to define the contour shape of 4)
(91) is protruded. On the other hand, the female mold (7) has a pillow fitting hole (71) into which the pillow (81) is fitted.

The female mold (7) and the male mold (8) are fixed to holders (70) and (80), respectively, as shown in FIG.
0) in the axial direction, the male (8) becomes female
(7) to form a saddle-shaped winding space between the two dies. Then, by rotating and driving the holder (70) of the female mold (7) in this state, the pillow (81)
And a coil (10) wound around the backing plate, and a saddle coil (1)
To manufacture.

FIG. 11 shows a path along which the winding (10) is wound along the saddle-shaped concave surface of the female die (7).
As shown by a chain line in the figure, a pillow (not shown) fitted in the pillow fitting hole (71), and a pair of pads (9) (9)
0) and the first regulating surface (7
The shape of the magnetic field forming portions (13) and (13) is defined by 2), and the pair of second regulating surfaces (73) and (74) and the abutments (9) and (90)
This defines the shapes of the radial side transition portions (11) and (12). The female mold (7) and the metal pad (9) have a winding (10).
Each edge portion to be contacted is rounded to prevent the winding (10) from being damaged in the winding process.

[0006]

However, in the conventional female mold (7), as shown in an enlarged manner in FIG. 11, the first regulating surface (72) formed on the female mold (7) and the 2 Regulatory aspects (73) (7
4), the edge (93) between the opposing surface (91) of the contact metal (9) with the female mold (7) and both side surfaces (92) and (92). , Contacting and crossing each other, and both edge portions (75) (93)
Since a wedge-shaped space is formed therebetween, the winding (10) is pushed into the wedge-shaped space in the winding step, and at this time or after the winding, the female mold (7) and the male mold ( When 8) was removed, the resin film of the winding (10) was sometimes damaged. If a large current is applied to the winding (10) to form the coil while the coating on the winding (10) is damaged, the insulation between the windings (10) deteriorates, causing the coil to burn out. There is.

An object of the present invention is to provide an apparatus for manufacturing a saddle coil in which there is no possibility that the winding is damaged in the winding step.

[0008]

An apparatus for manufacturing a saddle-shaped coil according to the present invention comprises a pair of female and male molds which are to be engaged with each other to form a saddle-shaped winding space. I have. Each mold has a first regulating surface formed of a saddle-shaped curved surface for defining the shape of both magnetic field forming portions, and a pair of second regulating surfaces formed of a flat surface for defining the shape of each transition portion. While, on one of the molds, a pillow to be located at the center of the winding space and a pad to be located at an end along the electron beam traveling direction of the winding space are protruded, A winding is applied around the pillow and pad. In the characteristic configuration, a mold edge portion formed between the first regulation surface and the second regulation surface of the other mold and with which the winding comes into contact is opposed to the other mold of the backing metal. The contact metal edge portions formed between the surface and both side surfaces sandwiching the facing surface and contacting the windings are formed by smooth convex curved surfaces, respectively. An interval larger than the size at which the convex curved surfaces are separated from each other is provided.

In the manufacturing apparatus according to the present invention, a pair of molds is engaged with each other, so that a conventional wedge-shaped space is not formed between the mold edge and the backing edge. Therefore, the damage caused by the winding being pushed into the wedge-shaped space as in the related art is prevented.

In the first specific configuration (FIGS. 1 to 3),
The contact metal (4) has a second regulating surface (23) (24) of the other mold.
A convex portion (42) projecting toward the first regulating surface (21) side from the mold edge portion (26) with respect to the main body (41) to be brought into contact with the main body (41),
By forming the contact metal edge (43) on the convex portion (42), a space is provided between the mold edge (26) and the metal contact edge (43). In this specific configuration, the winding (10) extends from one side of the pillow to the mold edge (26) via the backing edge (43). Where the contact edge
(43) and the mold edge (26) are separated from each other,
No wedge-shaped space into which the winding is to be pushed is formed between the two edges.

In the second specific configuration (FIGS. 4 and 5), the backing plate (5) is separated from the die edge portion (26) on the surface facing the other die. By forming the concave portion (51), the mold edge portion (26) and the contact metal edge portion (5
There is an interval between 2). In this specific configuration, the winding (10) extends from one side of the pillow, through the mold edge (26), and to the contact edge (52). Here, since the mold edge portion (26) and the contact metal edge portion (52) are separated from each other, no wedge-shaped space into which the winding is to be pushed is formed between the two edge portions.

Further, in the third specific configuration (FIGS. 6 and 7), recesses (61) and (61) are formed on both sides of the backing plate (6) sandwiching the surface facing the other mold. By doing so, a space is provided between the mold edge portion (26) and the contact metal edge portion (62). In the specific configuration, the winding (10) is formed from one side of the pillow, through the mold edge portion (26), to the contact edge portion.
(62). Here, since the mold edge portion (26) and the contact metal edge portion (62) are separated from each other,
No wedge-shaped space into which the windings are to be pushed is formed.

[0013]

According to the apparatus for manufacturing a saddle-shaped coil according to the present invention, no wedge-shaped space into which the winding is to be pushed is formed between the pair of dies, so that the winding is damaged in the winding process. There is no fear.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention for manufacturing a saddle coil will be specifically described below with reference to the drawings. As shown in FIG. 8, the saddle type coil (1) includes a pair of magnetic field forming portions (13) and (13), a large-diameter side transition portion (11) and a small-diameter side transition portion (12), and a window (14) is provided at the center. ) Is formed.

First Embodiment As shown in FIG. 1, a saddle-shaped coil manufacturing apparatus according to a first embodiment has a female mold (2) and a male mold (3) to be engaged with each other to form a saddle-shaped winding space. It has. The female type (2) is the saddle type coil
A first regulating surface (21) formed of a saddle-shaped concave surface for defining the shape of the magnetic field forming portions (13) and (13) of (1), and a large-diameter side transition portion (11) of the saddle-shaped coil (1) And a large-diameter second regulating surface (23) and a small-diameter second regulating surface (24), which are flat surfaces for defining the shape of the small-diameter side transition portion (12), and both sides of the first regulating surface (21). And a pair of formed winding guide surfaces (22) (22). 1st regulatory aspect
A pillow fitting hole (25) is recessed in the center of (21).
The female mold (2) has a first regulating surface (21) and each second regulating surface (23) (2).
4) has a die edge portion (26) formed by crossing, and the die edge portion (26) is rounded with a radius of about 1 mm.

On the other hand, the male type (3) has a pillow fitting hole of the female type (2).
A pillow (not shown) to be fitted into (25) protrudes, and a large-diameter side pad (4) and a small-diameter side pad (4) are provided on both sides of the pillow.
0), and the female mold (2) and the male mold (3) are engaged with each other as shown in the figure, so that the two metal pads of the male mold (3) are engaged.
(4) The (40) faces the large-diameter second restricting surface (23) and the small-diameter second restricting surface (24) of the female die (2).

Here, the large-diameter-side support (4) is a female mold (2).
Of the same shape as the conventional body (4
1) has a rectangular parallelepiped convex portion (42) protruding toward the first regulating surface (21) side from the mold edge portion (26), and has an inverted L-shaped cross section. (42) has a pair of abutting edge portions (43) and (43) formed by intersecting a surface facing the female mold (2) and both side surfaces sandwiching the facing surface. The part (43) is rounded with a radius of about 1 mm. The contact pad (40) on the small diameter side has the same configuration.

As shown in FIG. 2, a part of the convex portion (42) of the metal (4) should be fitted into the female mold (2) as shown in FIG. A recess (20) is formed. A similar recess (not shown) is also formed for the small-diameter contact pad.

For example, the wire diameter is about 0.2 mm and the number of turns is about 3
In an apparatus for manufacturing a 0-turn monitor saddle coil,
The large diameter side support 4 shown in FIG. 3 has a thickness T1 = 6.5 m.
m, for a body (41) having a width B = 23 mm, the protrusion amount t = 3 to
A protrusion (42) of 5 mm is formed.

Therefore, as shown in FIG. 3, the paddle (4) is a female mold (2).
In this state, the R-curved surface of the mold edge portion (26) and the R-curved surface of the contact metal edge (43) are separated from each other,
A wedge-shaped space sandwiched between the two R curved surfaces is not formed.

In the winding process using the saddle coil manufacturing apparatus, the winding (10) comes into contact with the contact edge (43) and changes its course slightly, as shown by the chain line in FIG. After that, it passes through the convex part (42) of the backing metal (4) and reaches the die edge part (26). Here, since the winding (10) is not pushed into the wedge-shaped space as in the related art, there is no possibility that the resin film is damaged.

Second Embodiment As shown in FIG. 4, a saddle-shaped coil manufacturing apparatus according to the present embodiment has a large-diameter side contact piece (5) having an L-shaped cross section and a small-diameter side contact piece (5).
0) is attached to a male mold (not shown in the figure). The male mold engages with the female mold (2), so that the two metal pads (5) and (50)
Is opposed to the large-diameter second restriction surface (23) and the small-diameter second restriction surface (24) of the female mold (2).

Here, a female die is used for the large-diameter contact pad (5).
A concave portion spaced from the mold edge portion (26) on the surface facing (2).
(51) is formed. The contact metal (5) has a pair of contact metal edge portions (52) and (52) formed by intersecting a surface facing the female mold (2) and both side surfaces sandwiching the facing surface, Each of the contact metal edge portions (52) is subjected to a rounding process with a radius of about 1 mm. The small-diameter side contact plate (50) has the same configuration.

For example, the wire diameter is about 0.2 mm and the number of turns is about 3
In an apparatus for manufacturing a 0-turn monitor saddle coil,
The large-diameter-side contact metal (5) shown in FIG. 5 has a thickness T1 = 6.5 m.
m, the width B = 23 mm, and the distance r between the recess (51) and the die edge (26) is set to about 3 mm.

Therefore, in a state where the metal plate (5) is engaged with the female mold (2), the R curved surface of the metal mold edge portion (26) and the metal plate edge portion (5).
The R-shaped surface of (2) is separated from each other, and a wedge-shaped space sandwiched between two R-shaped surfaces as in the related art is not formed.

In the winding process using the saddle type coil manufacturing apparatus, the winding (10) comes into contact with the mold edge (26) and changes its course slightly, as shown by the chain line in FIG. After that, it is stretched along the contact edge portion (52). here,
Since the winding (10) is not pushed into the wedge-shaped space as in the prior art, there is no possibility that the resin film is damaged.

Third Embodiment A saddle-shaped coil manufacturing apparatus according to the present embodiment comprises a large-diameter side support (6) and a small-diameter side support (60) having an inverted T-shaped cross section as shown in FIG. It is attached to a male type (not shown),
By engaging the male mold with the female mold (2),
(6) The (60) faces the large-diameter second restriction surface (23) and the small-diameter second restriction surface (24) of the female die (2).

Here, a female die is used for the large diameter side support (6).
(2) On both sides sandwiching the opposite surface, mold edge from top
A pair of recesses (61) (61) having a depth (D in FIG. 7) reaching the position below (26) is formed. In addition, the fund (6)
A facing edge portion (62) (62) formed by intersecting an opposing surface with the female mold (2) and both side surfaces sandwiching the opposing surface is provided. A rounding process with a radius of about 1 mm is performed. The small diameter side contact metal (60) has the same configuration.

For example, the wire diameter is about 0.2 mm and the number of turns is about 3
In an apparatus for manufacturing a 0-turn monitor saddle coil,
The large diameter side backing plate (6) shown in FIG. 7 has a thickness T1 = 6.5 m.
m, the width B = 23 mm, and the depth b in the width B direction of the concave portion (61) is set to about 1.5 mm.

Therefore, in a state in which the metal backing (6) is engaged with the female mold (2), the R curved surface of the metal mold edge (26) and the metal backing edge (6).
The R-shaped surface of (2) is separated from each other, and a wedge-shaped space sandwiched between two R-shaped surfaces as in the related art is not formed.

In the winding process using the saddle type coil manufacturing apparatus, the winding (10) comes into contact with the mold edge (26) and changes its course slightly, as shown by the chain line in FIG. After that,
It will be stretched along the contact edge (62) of (6). Here, since the winding (10) is not pushed into the wedge-shaped space as in the related art, there is no possibility that the resin film is damaged.

In the third embodiment shown in FIG.
Although the pillow (not shown) to be fitted into (25) and the paddles (6) and (60) are separated from each other, the same effect can be obtained even when a male type in which both are arranged in contact is adopted. Is obtained.

The configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims. For example, in the above embodiment, the contact metal according to the present invention is provided on both the large diameter side and the small diameter side,
Even in the case where only one of them is arranged, damage to the winding can be significantly reduced as compared with the conventional case, which is effective.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment in a state in which a backing metal is engaged with a female mold.

FIG. 2 is a perspective view showing a state in which a pad has been detached from the female mold.

FIG. 3 is an enlarged perspective view of the corresponding gold.

FIG. 4 is a perspective view showing a state in which a pad is engaged with a female mold in the second embodiment.

FIG. 5 is an enlarged perspective view of the corresponding gold.

FIG. 6 is a perspective view showing a state in which a metal plate is engaged with a female die in the third embodiment.

FIG. 7 is an enlarged perspective view of the corresponding gold.

FIGS. 8A and 8B are perspective views (a) and (b) of a saddle coil.

FIG. 9 is a perspective view showing a conventional female mold and male mold.

FIG. 10 is a partially broken front view showing a state in which the female mold and the male mold are engaged.

FIG. 11 is a perspective view of a female mold and a pad for explaining a conventional problem.

[Explanation of symbols]

 (1) Saddle coil (2) Female (21) First regulating surface (23) Second regulating surface (26) Die edge (4) Backing (43) Backing edge (5) Backing ( 52) Contact edge (6) Contact (62) Contact edge

Claims (5)

[Claims] 1. A pair of magnetic field forming portions extending along the electron beam traveling direction, and a pair of magnetic field forming portions extending on a plane perpendicular to the electron beam traveling direction and connecting ends of the two magnetic field forming portions in the same direction to each other. A saddle-shaped coil manufacturing apparatus having a crossover portion and a window formed in a central portion, comprising a pair of female and male types to be engaged with each other to form a saddle-shaped winding space. Each mold has a first regulating surface formed of a saddle-shaped curved surface for defining the shape of both magnetic field forming portions, and a pair of second second surfaces formed of a flat surface for defining the shape of each transition portion. A regulating surface is formed, and one of the molds has a pillow to be located at the center of the winding space and a backing metal to be located at an end of the winding space along the electron beam traveling direction. In a coil manufacturing apparatus in which is provided a projection and a winding is provided around a pillow and a pad, A first regulating surface and a second regulating surface of the other mold;
A mold edge portion formed between the regulating surface and the winding to be in contact with, and a winding formed between the opposing surface of the backing metal and the other die and the both side surfaces sandwiching the opposing surface. A saddle-shaped coil manufacturing apparatus, wherein a predetermined interval is provided between a contact edge portion to be brought into contact with the contact metal edge portion. 2. The mold edge portion and the backing edge portion,
The saddle-shaped coil manufacturing apparatus according to claim 1, wherein each of the edge portions is formed by a smooth convex curved surface, and an interval between both edge portions is set to be equal to or larger than a size at which the convex curved surfaces of each edge portion are separated from each other. 3. The backing plate (4) includes a second die of the other die.
With respect to the main body (41) to be brought into contact with the regulating surfaces (23) and (24), the convex portions (4) projecting toward the first regulating surface (21) from the mold edge portion (26).
2) is formed, and by forming the contact edge portion (43) on the convex portion (42), a space is provided between the mold edge portion (26) and the contact edge portion (43). The saddle-shaped coil manufacturing apparatus according to claim 1 or 2, wherein: 4. A mold (5) having a recess (51) spaced from the mold edge (26) on a surface facing the other mold, thereby forming the mold edge. The saddle-shaped coil manufacturing apparatus according to claim 1 or 2, wherein an interval is provided between the (26) and the abutment edge portion (52). 5. The contact metal (6) is provided with concave portions (61) and (61) on both sides sandwiching the surface facing the other mold so that the metal mold edge portion (26) is in contact with the metal mold edge. The saddle-shaped coil manufacturing apparatus according to claim 1 or 2, wherein an interval is provided between the gold edge portions (62).