JP2528525B2 - Winding method of metal ribbon - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for winding a metal ribbon.

[Conventional technology]

In recent years, various kinds of electronic parts, especially inductors and cores of magnetic heads, which utilize the excellent magnetic characteristics of amorphous metal have been provided.

By the way, it is difficult to cast an amorphous metal because it has excellent properties by being rapidly cooled.
For this reason, in general, when manufacturing a cut (or toroidal) core or the like, a tape-shaped amorphous metal ribbon is used and wound around a rotating winding core (spindle) in an annular shape to obtain a donut-shaped core. .

[Problems to be Solved by the Invention]

By the way, since tape-shaped amorphous metal generally exhibits toughness like spring steel, it is difficult to wind it.
It is difficult to wind along the winding core. Conventionally,
There is a method of starting the winding after fixing the winding start part to the winding core with adhesive tape, but this method has a problem that the adhesive tape hinders when removing the completed core from the winding core after the winding is completed. .

Therefore, as described in Japanese Patent Application Laid-Open No. 59-181008, a slit portion is formed on a winding core, a tape is wound around the slit portion, and then the tape is wound around the tape. It is proposed to infiltrate the metal ribbon between the winding and winding, but in this method, the step of inserting the winding tape by inserting the pre-wound tape into the slitting portion is indispensable, which may be time-consuming and reduce productivity. There is

The present invention has been made in view of the above matters, and an object thereof is to provide a method for winding a metal ribbon which can reliably and easily wind the metal ribbon and which can be easily removed from the winding core. .

[Means for solving the problem]

In order to solve the above technical problems, the present invention employs the following method when the tape-shaped metal ribbon 2 is wound around the rotating winding core 1 in an annular shape.

In the present invention, as the core 1, an air flow passage 3 is formed inside, and the air flow passage 3 is opened at a portion of the core 1 around which the metal ribbon 2 is wound to form a suction hole 6.
The core 1 is used.

The adhesive tape 5 is attached to the winding start end of the metal ribbon 2 with a part thereof protruding from the winding start end of the metal ribbon 2.
Then, the pressure inside the air flow passage 3 is reduced, the adhesive surface of the adhesive tape 5 is made an outer surface, and the winding start of the metal ribbon 2 is adsorbed to the suction hole 6 of the winding core 1 to make the winding core 1 The metal ribbon 2 wound in an annular shape is obtained by rotating.

In addition, the pressure in the air flow passage 3 is reduced by using the winding core 1, and the adhesive tape 5 having the adhesive surface on the front side is adsorbed to the suction hole 6 portion of the winding core 1 and then the metal ribbon The winding start end of 2 is adhered to the adhesive tape 5 and the winding core 1 is rotated to obtain the metal ribbon 2 wound in an annular shape.

[Action]

In the former method, the adhesive tape 5 is attached to the winding start end portion of the metal thin strip 2, the winding start portion is adsorbed to the winding core 1 suction hole 6 portion, and then the winding core 1 is rotated. When the core 1 makes one rotation, the metal ribbon 2 is attached and fixed to the adhesive surface of the adhesive tape 5. When the winding core 1 is further rotated in this state, the thin metal strips 2 are sequentially wound to form a core.

In the latter method, the adhesive tape 5 having the adhesive surface on the front side is adsorbed to the suction hole 6 and then the winding start end of the metal ribbon 2 is adhered to the adhesive tape 5. Therefore, when the winding core 1 is rotated as it is, the thin metal strips 2 are sequentially wound to form a core.

Thus, at the beginning of winding the metal ribbon 2, the metal ribbon 2 is properly fixed by the adhesive tape 5 fixed by the negative pressure. Moreover, since the wound core does not adhere to the core 1, it can be easily removed from the core 1.

In this way, the initial winding of the metal ribbon can be facilitated, the inner circumference of the core can be automatically attached, and the shape of the core can be prevented. Moreover, the core can be easily removed.

If it is difficult to remove the finished product, the air passage 3
It can be easily separated by applying pressure.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.

<First Embodiment> The winding core 1 is a metal spindle composed of a pipe with a lid, which is supported by a rotating device R via a rotary coupler 9 so that it can rotate in forward and reverse directions. ing.

The hollow portion of the winding core 1 serves as an air flow passage 3, which is connected to the suction pump 4 via a rotary coupler 9. The rotary coupler 9 airtightly couples the relatively rotating winding core 1 and the suction pump 4.

A large number of suction holes 6 are formed in the side surface of the winding core 1 within a certain width, and the suction holes 6 communicate with the air flow passage 3. The fixed width is determined according to the width of the metal ribbon 2 to be wound and may be set wider or narrower than the width of the metal ribbon 2. It is desirable to have the same width as. Further, the shape of the suction hole 6 may be circular as shown in the drawing, but it may be a slit-shaped hole along the length direction or the circumferential direction of the winding core 1 and provided at two positions.

When winding the metal ribbon 2, the adhesive tape 5 is first attached to the winding start end of the metal ribbon 2. About half of the adhesive tape 5 is attached to the metal ribbon 2 and the other half is projected from the winding start end of the metal ribbon 2. As the adhesive tape 5, polyimide (made by DuPont, trade name Kapton) was used.

Then, the suction pump 4 is operated to reduce the pressure in the air flow passage 3, and the winding start portion of the metal ribbon 2 is set to the suction hole 6 of the winding core 1 with the adhesive surface of the adhesive tape 5 as the outer surface.
Adsorb to part. At this time, the adhesive tape 5 attached to the winding start end of the metal ribbon 2 and protruding from the end is naturally adsorbed to the suction hole 6 of the winding core 1.

Here, when the winding core 1 is rotated, the metal ribbon 2 is strongly adhered to the adhesive surface of the adhesive tape 5 when the winding core 1 makes one rotation, and the metal ribbon 2 is fixed. When the winding core 1 is rotated in this state, the thin metal strips 2 are sequentially wound. The tension at this time is 0.
It was 6 kg.

Then, as shown in FIG. 3, the winding is stopped in the state of being wound to a predetermined thickness, and the core obtained by winding the metal ribbon 2 is obtained. After the winding, the end of the metal ribbon 2 is cut and the end is fixed to the core body side with the heat resistant adhesive tape 5a (Fig. 4). Polyimide was used as the heat-resistant adhesive tape 5a. When removing the core, it is desirable to stop the operation of the suction pump 4 for easy removal. This produces a core as shown in FIG.

As the metal ribbon 2, 2605S-2 (a product name of Fe-B-Si amorphous metal manufactured by Allied Co., Ltd., trade name: Methograss) was used.

<Second Embodiment> FIG. 6 shows the embodiment of FIG. 2, in which the top portion of the winding core 1 has an opening, and the suction hole 6 can be opened and closed in this opening according to the width of the ribbon 2. Is provided. That is, the cylindrical adjustment head 1a with a lid is fitted in the winding core 1, and the suction holes 6 having a large number of holes can be sequentially closed from the top by retracting the adjustment head 1a. As a result, when winding a wide ribbon 2, the adjusting head 1a is pulled out to widen the opening width of the suction hole 6, while when winding a narrow ribbon 2, the adjusting head 1a is pushed in to suck. The opening width of the hole 6 is narrowed.

Thus, according to the embodiment shown in FIG. 6, cores having various widths can be manufactured.

<Third Embodiment> Since the apparatus used is the same as that of the first embodiment, its description is omitted.

When winding the metal ribbon 2, first, the suction pump 4 is operated, and then the adhesive tape 5 is sucked into the suction hole 6 as shown in FIG. When adsorbing the adhesive tape 5,
The adhesive surface is placed on the front side so that the adhesive tape 5 does not adhere to the core 1. Then, apply the metal ribbon 2 to the adhesive tape 5
In this case, the position of the adhesive tape 5 is adjusted so that about half of the adhesive tape 5 is attached to the starting end of the metal ribbon 2, and then the winding core 1 is rotated.

Then, the metal ribbon 2 is wound around the winding core 1 while rotating together with the adhesive tape 5, and when the metal ribbon 2 makes one rotation,
The non-bonded part of is bonded and fixed to the metal ribbon 2. Since the suction pump 4 has a negative pressure in the air flow passage 3, the metal ribbon 2 is also adsorbed on the side surface of the winding core 1. When the winding core 1 is further rotated in this state, the metal ribbon 2 is sequentially rotated. The core is formed by winding. Since the subsequent processing is the same as that of the first embodiment, the description thereof will be omitted.

〔The invention's effect〕

According to the present invention, when the tape-shaped metal ribbon is wound around the rotating winding core in an annular shape, the metal ribbon can be easily fixed without adhering to the winding core, and the winding can be started. Therefore, it is easy to remove the completed core from the winding core, and the productivity is improved.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is a perspective view showing an operation process of the first embodiment, FIG. 2 is a perspective view showing an operation process of the second embodiment, and FIG. FIG. 4 is a perspective view showing a winding state, FIG. 4 is a perspective view showing a winding end state, FIG. 5 is a perspective view showing a completed core, and FIG. 6 is a sectional view showing another embodiment. 1 ... Core, 2 ... Metal ribbon, 3 ... Air flow passage, 4 ... Suction pump, 5 ... Adhesive tape, 6 ... Suction hole, 9 ... Rotating coupler, R ... Rotating device .

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masaaki Ohashi 3 Chikusaigan, Ichihara-shi, Chiba Mitsui Petrochemical Co., Ltd. (56) Reference JP-A-1-313110 (JP, A)

Claims (2)

(57) [Claims] 1. When a tape-shaped metal ribbon 2 is wound around a rotating winding core 1 in an annular shape, an air flow passage 3 is formed in the inside as the winding core 1 and the air flow passage 3 is formed. Is used as a suction hole 6 by opening the core 1 at a portion where the metal ribbon 2 is wound, and an adhesive tape 5 is partially attached to the winding start end of the metal ribbon 2. The tape is attached in a state of protruding from the winding start end of the thin ribbon 2, the pressure in the air flow passage 3 is reduced, and the winding start of the thin metal ribbon 2 is wound around the core with the adhesive tape 5 as the outer surface. 1
The method for winding a metal ribbon, wherein the winding core 1 is rotated by being attracted to the suction holes 6 of the above. 2. When winding a tape-shaped metal ribbon 2 in an annular shape around a rotating winding core 1, an air flow passage 3 is formed inside the winding core 1 and the air flow passage 3 is formed. Is used as a suction hole 6 by opening the core 1 in a portion where the metal ribbon 2 is wound, to reduce the pressure in the air flow passage 3 and to make the adhesive surface the front side. After the adhesive tape 5 is adsorbed to the suction hole 6 of the winding core 1, the winding start end of the metal ribbon 2 is adhered to the adhesive tape 5 and the winding core 1 is rotated. How to wind the belt.