JP2549114B2 - Method and apparatus for winding toroidal core - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a toroidal core winding device, and particularly to a fine core window such as a double azimuth head (hereinafter referred to as a DA head) and two cores. The present invention relates to a toroidal core winding method and apparatus suitable for performing toroidal winding in a narrow gap therebetween.

[Conventional technology]

Conventionally, as a device for winding a DA head on both sides of a core window, as described in, for example, JP-A-60-115213, a wire rod is provided in a window of one core or in a gap between two cores. It has been proposed that the core be half-rotated in the same direction as the winding direction of the wire rod while passing through the window of another core or the gap between the two cores, and the wire rod is always inserted from one side.

[Problems to be solved by the invention]

In the above-mentioned conventional example, there is a problem that the winding temperature is lowered because the tip end of the wire rod is fed to the wire transfer path so that two wire rods are wound around the core once.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a toroidal core winding method and apparatus capable of solving the above-mentioned problems of the prior art and enabling high speed winding.

[Means for solving problems]

In the winding method of the toroidal core in which winding is performed on the winding portions formed on both sides of each core window of the plurality of toroidal cores arranged with a gap, the tip of the window is While passing the tip of the passed line along the circular transfer path to just before the core window,
A wire is wound around the winding portion via a transfer means that transfers the wire and applies tension to the wire, and a wire between the portion of the wire wound around the core and the tip of the wire is between the cores. Toroidal core winding method characterized by inserting into a gap, and a plurality of toroidal cores arranged through gaps A toroidal core wound around winding portions formed on both sides of each core window In the paper line device, the transfer path formed in a circular shape and the core window can be tilted in a plane orthogonal to the transfer path, and the core window is held in a part of the transfer path. A toroidal core winding, comprising: core holding means; and means for inserting a wire between a portion of the wire wound around the core and a tip of the wire into a gap between the cores. Achieved by the device.

[Work]

As shown in FIG. 14, the VTR DA head to which the present invention is applied has a gap 5 of about 0.5 mm at the tip of the base 2B.
The individual cores 2 and 2'are attached. Each of these cores 2, 2'is a plate-like body made of phyllite having a thickness of about 0.2 mm, and has a length of 2 to 3 mm.
It has been molded to a size of some extent. Each core 2, 2'has a winding core window 3 of about 0.2 mm x 0.5 mm formed near the tape sliding surface 2A. A winding portion 4 is formed on both sides of the core window 3, and an electric wire 1 (hereinafter referred to as a wire) having a core wire diameter of about 0.33 mm is wound around the winding portion 4. The number of turns of the wire 1 varies depending on the product, but is usually about 5 to 15 on the left and right. The base 2B formed as described above is attached to an upper cylinder (not shown).

In the present invention, when the window is wound around the winding portion 4, the middle portion of the wire is taken out from the wire transfer path while the tip of the wire is wound around the wire transfer path in a circular shape connected to the core window. It is inserted in the gap between the cores and is wound one turn around the winding portion.
It is twice as fast.

〔Example〕

1 to 13 showing an embodiment of the present invention will be described below.

FIG. 1 is a perspective view showing an entire winding device according to an embodiment of the present invention. A wire guide is formed between the lower surface of a cover 12 that is formed in a circular shape on the upper surface of a base 10 and covers the upper surface. 1
Forming the groove 11A.

Further, a notch 13 formed in a part of the line guide 11 on the upper surface of the base 10, and a line guide of a cut portion of the notch 13.
The core window 3 of the wire guide 11 is provided with the core 2 arranged so that 11 is located on both sides of the core window 3 shown in FIG.
Pair of rollers 21, 21 'arranged on the line insertion side of the core window and a pair of rollers 22, 22' arranged on the line feeding side of the core window 3.
And the two pairs of rollers 23,23 ', 24', 2 so arranged on the line guide 11 between these two pairs of rollers 21,21 ', 22,22'.
4'is such that the axis of rotation is perpendicular to the upper surface of the base 10 and the circumscribing positions of the rollers 21, 21 'to 24, 24' are located in the line guide 11. It is provided. Furthermore, on the upper surface of the base 10,
A wire retainer 68 for preventing loosening of the wire 1 arranged in the guide 11 in the radial direction, an arm 60 for transferring an intermediate portion of the wire to the vertical insertion side of the core 2, and a wire insertion side of the core 2 A movable shape line guide 40 formed by cutting out a part of the base 10 is provided, and a rotating body 54 for instructing the core 2 to be movable in three directions of XVZ with respect to the upper surface of the base 10 and the rotation body 54. Body 54
A core holding unit 50 composed of a core reversing portion 9 for rotating the core 2 via a winding portion 7 for winding the wire 1 around the core 2 is provided.

Next, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and drives the rollers 21, 22, 23, 24 arranged outside the line guide 11 and the rollers 21 ', 22 arranged inside. A mechanism 30 for swinging (retracting) ′, 23 ′ and 24 ′ is shown.

As shown in FIG. 2, in the roller driving and swinging mechanism 30 , when the motor 31 is driven, the rotary shaft 32 rotates via the coupling 31A, and the rollers 21, 22 fixed to the upper end of the rotary shaft 32. , 23,24 and the rollers 21 ', 22', 2 that contact them
As 3'and 24 'rotate, the wire 1 inserted between them is transferred. In addition, the piston 34 that slides in the cylinder 33
When is moved upward, the swing arm 36 connected to the upper end of the swing arm via the pin 35 swings about the pin 37.
Rollers 21 ', 22', via a shaft 38 fixed to the tip end thereof,
When 23 ′ and 24 ′ are rocked from the solid line position to the one-dot chain line position and separated from the rollers 21, 22, 23 and 24 which are in contact with each other, and the piston 34 moves downward, the arm 36 and the shaft 38 are moved. The rollers 21 ', 22', 23 ', 24' are oscillated upward to the positions shown by the solid lines and contact the outer rollers 21, 22, 23, 24 via the rollers. Further, as shown in FIG. 2, the inside of the circular groove 11A on the upper surface of the base 10 is formed with a flat surface 14 having a gap ε between the lower surface of the cover 12 and the diameter of the wire 1 which is larger than the diameter of the wire 1. Circular groove 11A between 14 and the bottom surface of cover 12
Forming a slit 16 connected to. The plane
A roundness 14A is formed at the corner between the end of 14 and the inner surface of the groove 11A so that the wire 1 can smoothly move between the groove 11A and the slit 16. Reference numeral 39 in the figure denotes a bearing for rotatably supporting the rotary shaft 32.

Therefore, the inner rollers 21 ', 22', 23 ', 24'
Is in the solid line position, the outer rollers 21,2
The line 1 is inserted between 2, 23 and 24, but when one roller 21 ′ inside, for example, swings to the position indicated by the alternate long and short dash line, the other inner roller 22 at the solid line position ′, 2
While the wire 1 is pulled by the rotation of 3 ', 24' and the other outer rollers 22, 23, 24 which are in contact therewith, the wire 1 passes above one roller 21 'on the inside and is inserted into the slit 16. Is inserted.

Next, FIG. 3 is a sectional view taken along the line BB ′ of FIG. 1 and shows the movable shape line guide 40.

As shown in FIG. 3, the movable shape wire guide 40 is
A guide groove 41 connected to the circular groove 11A is formed on the upper surface of the opening groove 17 which is movably fitted in the opening groove 17 so as to be freely movable in the vertical direction, and the surface facing the lower surface of the cover 12 is formed. It is connected to a pneumatic cylinder 43 fixed to the lower surface of the base 10 via a shaft 42 penetrating in the vertical direction.

Therefore, the movable shape wire guide 40 moves upward via the shaft 42 by the driving of the pneumatic cylinder 43, and when the upper surface of the movable shape wire guide 40 contacts the lower surface of the cover 12, the guide groove 41 completely closes the periphery of the guide groove 41. When the pressure cylinder 43 is driven to move downward through the shaft 42 and its lower surface contacts the bottom surface of the opening groove 17, a gap having the same height ε as the slit 16 is formed between the upper surface and the lower surface of the cover 12. And connect with slit 16.

Next, FIG. 4 is a sectional view taken along the line CC ′ of FIG. 1, showing the core holding unit 50.

As shown in FIG. 4, the core holding unit 50 includes a base 6 provided separately from the base 10, a bracket 4A fixed to the base 6, a motor 55 fixed to the bracket 6A, and a motor It is fixed to the tip of the drive shaft 56 of 55 and its cross section is A rotating body 54 formed on the rotating body 54, a top 53 fixed to the central bottom surface of the rotating body 54 and sliding inside, and a top 53 of the rod 52,
The core 2 is inserted and held so that the center line of the core window 3 and the rotation center line of the rotary body 54 are aligned with the side surface of the tip projection 54A of the rotary body 54 facing the top 53. It is composed of an air cylinder 51.

Therefore, the core holding unit 50 is driven by the motor 55,
When the rotating body 54 rotates 180 ° via the drive shaft 56, the core 2 swings around the core window 3 between the solid line position and the two-dot chain line position.

Next, FIG. 5 is a sectional view taken along the line D-D of FIG. 1 and shows the line retainer 68 for preventing the line slack and the swing mechanism 61 of the arm 60.

As shown in FIG. 5, the paper presser 68 is loosely fitted in a hole 12A formed by cutting a part of the cover 12 in a straight line so as to be movable in the vertical direction while contacting one end face thereof, and its lower surface is normally kept by its own weight. Touches the bottom surface of the slit 16 and is pushed up by the wire 1 when the wire 1 reaches the inner end chamfered surface 68A in the slit 16, and the wire 1 is inserted between the lower surface and the bottom surface of the slit 16. Along with it, it is pressed by its own weight.

Further, the arm 60 has an L-shape, and its upper portion is connected to the inside of the cutout hole 12a and the cutout hole 12A so that the base is formed.
A hole 10A penetrating vertically in 10 penetrates freely between a solid line position that crosses the slit 16 and a dashed line position below the bottom surface of the slit 16, and a lower end portion of the base 10 is attached. Is supported by a drive shaft 61B of a motor 61A fixed to the lower surface of the pin via a pin 62. The motor 61A is formed so as to move the upper portion of the arm 60 through the pin 62 to the cutout hole 12A and the hole 10A in the longitudinal direction when the drive shaft 61B is rotated.

A central portion of a torsion spring 66 is wound around the pin 62. This torsion spring 66 has its both ends outside the drive shaft.
61B and two pins 64 fixed to the arm 60,
The upper portion of the arm 60 is always held at the solid line position across the slit 16 by the elastic force of the torsion spring 66.

A cylinder 67 is fixed to the lower surface of the base 10 so as to be juxtaposed with the motor 61A. When the cylinder 67 is driven, the tip of the rod 67A is formed so as to swing the arm 60 downward about the pin 62 and swing the upper portion thereof to the position indicated by the alternate long and short dash line below the slit 16. There is. Incidentally, 63 in the drawing is a pin, and one end thereof is press-fitted into the drive shaft 61B so as to be in contact with the upper surface of the arm 60,
The arm 60 is restricted from swinging upward from the illustrated position.

Since the winding device of the toroidal core according to the present invention is constructed as described above, the winding method of the winding portion 7 will be described below with reference to FIGS. 6 to 13.

In FIG. 6, the upper part of the arm 60 is swung by the cylinder 67 to the position below the slit 16 (the position indicated by the alternate long and short dash line in FIG. 5), and the lower surface of the movable shape line guide 40 is in contact with the bottom surface of the opening groove 17. Shows a state in which there is a gap between the upper surface and the lower surface of the cover 12.

Further, the wire 1 has an end portion 1A sandwiched between a pair of rollers 23 and 23 ', and an inner roller 21' arranged on the wire insertion side of the core window 3 is retracted from the roller 21 and an intermediate portion of the wire 1 is provided. 1B shows a state in which a coil including the winding portion 4 of the core 2 inside is formed in the slit 16.

Incidentally, in FIG. 6, the arm 60 and the roller 21 'are
Are indicated by chain lines, but these indicate the above-mentioned state, and in the following drawings, the arm 60 and the rollers 21 ', 22', 23 ', 24' are the same as those described above. When in the state, it is indicated by a chain line.

On the other hand, in the core 2, as shown in FIG. 7, the core window 3 is positioned on the extension of the line guide 11 surrounded by the movable shape line guide 40 and the cover 12 with the tape sliding surface 2A facing upward. Held in.

From this state, as the rollers 23, 23 'rotate, the tip portion 1A of the wire 1 is transferred to the line guide 11 and reaches between the rollers 24, 24' as shown in FIG. The size of the wire ring formed by the intermediate portion 1B of the core becomes smaller and the core 2 is narrowed down toward the winding portion 4.

During this time, the movable wire guide 40 continues to have an open groove on its lower surface.
Since there is a gap between the upper surface of the bottom surface of 17 and the lower surface of the cover 12, the wire 1 is inserted into the slit 16 from the guide groove 41 on the upper surface of the movable wire guide 40, and the winding of the core 2 is wound. Part 4
You can narrow down to.

Thereafter, as shown in FIG. 9, when the roller 22 'is retracted and the roller 21' is returned to the contact position with the original roller 21, the intermediate portion 1B of the line 1 is replaced with the pair of rollers 23, 23 '. Along with the transfer of the tip 1A of the wire 1 by rotation, the wire guide 11
Since the wire retainer 68 is inserted into the slit 16 and is pushed up by the wire retainer 68 and is inserted between the lower surface and the bottom surface of the slit 16 and pressed by the weight of the line retainer 68, it is possible to prevent the wire retainer 68 from loosening.

As the rollers 23, 23 'continue to rotate, the wire 1 is tensioned in the intermediate portion 1B and the wire 1C already wound on the core 2, and in this state the roller 22' returns to its original position and the roller 22 Contact with.

At this time, the movable shape wire guide 40 moves upward and
As shown in the drawing, the upper surface thereof contacts the lower surface of the cover 12, so that the guide groove 41 on the wire insertion side of the core window 3 is blocked from the slit 16.

Further, when the tip portion 1A of the wire 1 is transferred by the rollers 24, 24 'and reaches the movable wire guide 40 via the rollers 21, 21', the driving of the pneumatic cylinder 67 is stopped and the torsion spring 66 Elastic force raises the upper part of the arm 60 to a position where it crosses the slit 16 and retracts the roller 23 '.

At this time, since the intermediate portion 1B of the wire 1 is pressed by the wire presser 68 as described above, it is possible to prevent the wire 1 from loosening.

Next, as shown in FIG. 10, the core 2 is tilted about the core window 3 via the core holding unit 50 so that the tape sliding surface 2A side of the gap 5 is aligned with the slit 16.

In this state, as shown in FIGS. 11 (a) and 11 (b), the tip portion 1A of the wire 1 is transferred by the rollers 21 and 21 ', guided by the guide groove 41 of the movable wire guide 40, and guided by the core window 3. When reaching the wire insertion side, the motor 61A is driven and the arm 60 moves to the wire insertion side of the core 2 in the notch hole 12A and the hole 10A, so that the intermediate portion 1B of the wire 1 partially holds the wire presser 68. It is pulled by the arm 60 while being pressed by and is guided into the gap 5 between the core 2 and the core 2 ′ while being guided by the slit 16 while being tensioned.

Then, the rollers 21 and 21 'send the wire 1 to the tip portion 1A of the wire 1 and exit the cutout portion 13. At this time, the wire IC already wound around the winding portion 4 of the core 2 is tensioned by the arm 60. Therefore, the tips 1A of the one wire 1 pass through the core window 3 and proceed into the wire guide 11 without the wires 1A and 1C interfering with each other.

The tip 1A of the wire 1 that has passed through the core window 3 in this way
Is transferred by the rotation of the rollers 21 and 21 'and reaches between the rollers 22 and 22' as shown in FIGS. 12 (a) and 12 (b), the rollers 23 'and 24' are returned to their original positions. Then, the movable shape line guide 40 moves downward while contacting the rollers 23 and 24, and the lower surface thereof contacts the bottom surface of the opening groove 17 to form a gap between the upper surface and the lower surface of the cover 12.

Further, the upper portion of the arm 60 is swung by the drive of the cylinder 67 to the position indicated by the alternate long and short dash line in FIG.

Then, the core 2 is inclined as shown in FIG.
Is oscillated around the core window 3 through the core holding unit 50 so as to be returned to the original state, and is held with the tape sliding surface 2A facing upward as shown in FIG.

On the other hand, the intermediate portion 1B of the wire 1 is transferred by the rotation of the rollers 21 and 21 ', and the size loop including the winding portion 4 of the core 2 and the roller 21' is gradually narrowed and becomes smaller.

At this time, when the roller 21 'is retracted and the tip portion 1A of the wire 1 is transferred by the rotation of the rollers 22, 22' and reaches between the rollers 23, 23 ', the state shown in FIG. The winding work of the winding is completed, and the same operation as described above is repeated a predetermined number of times, so that the winding work of the other side is completed.

Then, as shown in FIG. 13, the core holding unit
The core 50 is rotated by 180 degrees to invert the core 2 about the core window 3, and the same operation as described above is repeated to complete the winding work on the other side of the core 2, that is, the outside. However, in this case, since it is on the outside, it is not necessary to tilt the core 2 shown in FIG.

Further, by repeating the same operation as described above for the core 2 ', all winding work is completed. However, when winding on the core 2 ', the rotating body is moved by the movement of the X axis and the Y axis.
It is necessary to correct the positional deviation between the rotation center line of 54 and the center line of the core window 3.

[Effect of the Invention] According to the present invention, one turn can be wound in the gap between the core window and the two cores while the tip end of the wire is transported once along the transport path of the wire. The speed of the line can be increased.

[Brief description of drawings]

FIG. 1 is a perspective view showing a toroidal winding device which is an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA ′ in FIG. 1, and FIG.
FIG. 4 is a sectional view taken along the line BB ′ of FIG. 1, and FIG. 4 is a sectional view taken along the line C- of FIG.
C'sectional view, FIG. 5 is a DD 'sectional view of FIG. 1, FIGS. 6 to 13 are explanatory views for explaining the winding operation, and FIG. 14 is a perspective view showing an example of a DA head. It is a figure. 1 ... line, 1A ... line tip, 1B ... line middle part, 2 ... core, 3 ... core window, 5 ... gap, 10 ... base, 11 ...
Line guides, 21-24 and 21'-24 '…… Rollers, 40 ……
Movable wire guide, 50 …… Core holding unit, 60 …… Arm, 68 …… Wire retainer.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Wada, 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Hitachi, Ltd., Production Engineering Laboratory (72) Hiroaki Sakamoto 292 Yoshida-cho, Totsuka-ku, Yokohama-shi Hitachi, Ltd. Inside the Technical Research Institute (72) Inventor Yoshiaki Shimazu 1410 Inada, Katsuta-shi, Osaka Inside the Tokai Plant, Hitachi, Ltd. (56) References JP 56-103068 (JP, A) JP 62-45012 (JP, A) Japanese Patent Publication Sho 44-1629 (JP, B2)

Claims (2)

(57) [Claims] 1. A winding method of a toroidal core, wherein winding is performed on a winding portion formed on both sides of each core window of a plurality of toroidal cores arranged with a gap therebetween, and a tip of the wire is provided with a core window. While passing the tip of the passed wire along the circular transfer path to just before the core window, the wire is transferred via the transfer means for transferring the wire and applying tension to the wire. A winding method for a toroidal core, characterized in that the wire is wound around the winding portion, and a wire between a portion of the wire wound around the core and a tip portion of the wire is inserted into a gap between the cores. 2. A winding device for a toroidal core, which winds around a winding portion formed on both sides of each core window of a plurality of toroidal cores arranged with a gap between them, the transfer being formed in a circular shape. A path, a core holding unit that is tiltable in a plane orthogonal to the transfer path around the core window, and holds the core window in a part of the transfer path, and a line wound around the core. And a means for inserting a wire between the portion and the tip of the wire into the gap between the cores.