JPH02148708A - Manufacture of amorphous core - Google Patents

Abstract

PURPOSE:To make the weight of a core uniform by a method wherein the outer diameter of the core is controlled in the process of taking up an amorphous tape and the tape is cut off when the lamination thickness reaches a required value. CONSTITUTION:A take-up metal core 19 is rotated to take up an amorphous tape 13. When the outer diameter of the wound tape 13 reaches a required value, the outer diameter is detected by a detector such as an optical sensor. If the diameter is the required diameter, the tape 13 is cut off by a cutting process 11. After the out tape is wound by the metal core 19, the tape 13 is fixed by a fixing device 25. A core 21 is drawn out to complete a series of processes. As the core 21 is produced while its diameter is controlled, the inner and outer diameters of the core 21 can be kept uniform regardless of the thickness of the amorphous tape. The characteristics of the core 21 are not changed while it is used.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention 1 (Field of Industrial Application) This invention relates to an improvement in a method for manufacturing an amorphous core.

(Prior Art) Conventionally, an amorphous core used as an electrical component is made by winding an amorphous tape into a small diameter coil and fixing the ends by spot welding or the like.

The manufacturing method involves controlling the length of the amorphous tape wound in the winding process, and when it reaches a predetermined length, the tape is cut in the cutting process, and the ends of the tape are fixed by spot welding etc. A common method is to manufacture a cylindrical core by

(Problem to be solved by the invention) By the way. In the method for manufacturing the amorphous core described above, the core is manufactured by controlling the length of the tape, but at present, when manufacturing the amorphous tape itself, there is an error of about ±20% in the thickness.

Therefore, when the core is manufactured by controlling the length, there is a problem that the weight of the core has an error of ±20% and the characteristics change during use.

The purpose of this invention is to improve the above-mentioned problems by controlling the outer diameter of the coil in the winding process and keeping the stacking thickness constant, thereby producing a core with uniform weight and characteristics during use. An object of the present invention is to provide a method for manufacturing an amorphous core that achieves stability.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention includes a winding step of winding the amorphous tape through a tension adjustment step from an unwinding step of supplying the amorphous tape; A detection process that detects that the amorphous tape has been wound to a predetermined outer diameter in the winding process, a cutting process that cuts the amorphous tape based on the detection signal of the detection process, and a The method for manufacturing an amorphous core includes a fixing step of fixing the ends.

(Function) By adopting the method for manufacturing an amorphous core of the present invention, it is possible to detect that a predetermined outer diameter is reached by optical or electrical detection means in the winding process of winding from the unwinding process to the tension adjustment process. is detected, and the detection signal activates the cutting process provided before the winding process to cut the tape.

The ends of the cut amorphous tape are wound in a winding process and the rear end is fixed by a fixing means such as spot welding to produce an amorphous core.

Therefore, the outer diameter of the amorphous core is approximately constant, and weight errors can be reduced.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings. Note that the device according to the present invention may be an in-shell device, so a detailed description of the structure will be omitted.

The manufacturing method in the manufacturing apparatus 1 includes an unwinding process 3, a tension adjustment process 5, a winding process 7, and a cutting process 11 that is activated by a detection signal from a detection process 9 that detects the outer diameter.
The amorphous tape 13 is cut.

After cutting, the amorphous tape 13 is wound up and the end portion is fixed in a fixing step 15.

More specifically, in the unwinding process 3, the amorphous tape 13
A rewinding unit 5i17 such as a reel is rotatably provided as a supply unit in which the reel is wound.

In the tension adjustment step 5, the amorphous tape 13 drawn out from the unwinding cylinder 17 of the unwinding step 3 is provided on the way to the winding step 7, and the amorphous tape 1 is
This serves to apply rearward tension to prevent loosening of the part 3. Its structure is either a prydle type in which a plurality of rollers are arranged above and below, or a leveler type.

In the winding step 7, a winding core 19 in the form of a round bar with a small diameter is rotatably provided, and the amorphous tape 13 is wound an appropriate number of times to produce the core 21.

The detection step 9 is a step of emitting a detection signal when the winding has reached a predetermined outer diameter in the winding step 7, and the detector 23 detects the outer diameter of the winding using a device such as an optical sensor. Detect.

The cutting step 11 includes a cutting machine that detects that the detector 23 of the detection process 9 has been wound to a predetermined outer diameter and is activated by the detection signal, and cuts the amorphous tape 13 with the cutting machine.

In the fixing step 15, the amorphous tape 13 cut in the cutting step 11 is wound up by rotating the winding core 19 for a predetermined period of time, and the terminal end is fixed with a fixing device A25, such as a spot welding device.

After that, the completed core 21 is extracted from the winding core 19,
A series of steps is completed. By repeating this operation, cores 21 with uniform outer diameters can be continuously manufactured.

As described above, since the core 21 is manufactured by controlling the outer diameter, it always maintains uniform inner and outer diameters regardless of the thickness error of the amorphous tape 13. Therefore, the weight of the core 21 is uniform, and the characteristics of the core 21 do not change during use.

It goes without saying that the invention is not limited to the embodiments described above, and that various changes can be made without departing from the gist of the invention.

[Effects of the Invention] As can be understood from the above description of the embodiments, the present invention is capable of rolling an amorphous tape using a detection signal in a detection process that detects that the tape has been wound to a predetermined outer diameter in the winding process. After cutting, the winding end portion is fixed in a fixing process to produce a core.

Therefore, the core can always have a uniform weight, and its characteristics can be stabilized during use.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram conceptually showing the manufacturing method according to the present invention. 3... Rewinding process 5... Tension adjustment process 7...
Winding process 9...Detection process 11...Cutting process
13... Amorphous tape 15... Fixed process agent Patent attorney Yasuo Miyoshi

Claims (1)

[Claims] A winding process in which the amorphous tape is wound through a tension adjustment process from an unrolling process in which the amorphous tape is supplied, a detection process in which it is detected that the amorphous tape has been wound to a predetermined external shape, and a detection process in which the amorphous tape is wound into a predetermined shape. 1. A method for producing an amorphous core, comprising a cutting step of cutting an amorphous tape based on a detection signal, and a fixing step of fixing an end of the amorphous tape cut in the cutting step.