JPH03283702A - Manufacture equipment for magnetized material and its manufacture - Google Patents

Abstract

PURPOSE:To improve the work efficiency and the productivity by using an electromagnet so a to apply an external magnetic field to a magnetized material so as to provide a magnetic force and parting an iron core from the magnetized material. CONSTITUTION:An advance/retreat drive means 9 is connected to an iron core 5 of each electromagnet 3 so as to approach the iron core 5 or to part it to/ from a magnetic electronic component (a). Thus, when an external magnetic field is applied to the magnetic electronic component (a), the iron core 5 is approached and the iron core 5 is retreated after magnetization to avoid adverse effect due to residual magnetism. Thus, the magnetic force and the magnetic characteristic or the like are measured continuously without moving the magnetic electronic component (a), the work efficiency and the productivity are improved to reduce the manufacturing cost.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for manufacturing a magnetized object, such as an isolator, in which a magnetic field is applied to a magnetized object to magnetize it, and a method for manufacturing the same. Especially after applying magnetism to a magnetized object,
A manufacturing device that can continuously adjust characteristics while avoiding the negative effects of residual magnetism, thereby improving productivity.

and a manufacturing method.

(Prior Art) An electromagnet is used to apply magnetic force to a magnetized object, for example, a magnetic electronic component such as an isolator or a circulator. This air core coil is divided into different types.
To generate a strong magnetic field, it is necessary to increase the winding diameter of the coil and the current value to be extremely large. Moreover, this large current causes the coil to generate heat at a high temperature, so
Air cooling or water cooling is required. On the other hand, iron core coils have the advantage of having a small winding diameter and being able to generate the same magnetic field as air core coils with low current. Therefore, when magnetizing the above-mentioned magnetic electronic components, iron core coils are used from the viewpoint of cost.

As an apparatus for manufacturing magnetic electronic components using such an iron core coil, there is an apparatus having a structure shown in FIG. This manufacturing device 20 has a structure in which a pair of electromagnets 24 each having a coil 23 wound around an iron core 22 are arranged in a magnetic circuit case 21 so that the iron cores 22 face each other with a gap between them. There is. To magnetize the magnetic electronic component 25 with this manufacturing apparatus 20, the magnetic electronic component 25 is placed between the iron cores 22, and the power switch 26 is turned on. Then, the magnetic field from the iron core 22 is applied to the magnetic electronic component 25, thereby applying a predetermined magnetic force to the magnetic electronic component 25.

Thereafter, the magnetic properties and electrical properties of the magnetic electronic component 25 are measured and adjusted to obtain desired values.

[Problem that the invention seeks to solve]

By the way, when the magnetic electronic component 25 is manufactured by the manufacturing apparatus 20, the iron core 22 is magnetized by the generated magnetic field, so even if the power switch 26 is turned off, several hundred or more magnetic fields remain between the iron cores 22. (Shaded area in Figure 5) Therefore, if the magnetic force, magnetic characteristics, or electrical characteristics are measured while the magnetized magnetic electronic component 25 is placed between the iron cores 22, the measurement will be affected by the residual magnetism. There is a problem that a deviation occurs in the values.

Although this is not a particular problem when only applying a magnetic force of a predetermined value or more to a magnetized object, it becomes a problem when it is necessary to apply an accurate magnetic force within a predetermined range, such as with magnetic electronic components 25. . Therefore, after magnetizing the magnetic electronic component 25, the component 25 is once removed from the manufacturing device 20, its characteristics are measured at another location, and the component 25 is inserted into the manufacturing device 20 again according to the measured values. At present, the work of magnetizing, demagnetizing, and demagnetizing is repeated. As a result, there is a problem in that the work efficiency in the manufacturing process of the magnetic electronic component 25 deteriorates, and the cost increases accordingly.

The present invention has been made in view of the above-mentioned circumstances, and provides an apparatus and method for manufacturing a magnetized product that can avoid the adverse effects of residual magnetism in the manufacturing process of magnetic electronic components, improve work efficiency, and reduce costs. is intended to provide.

Means for Solving Problem c] The invention of item 1 of the present application includes an electromagnet formed by disposing a coil around the outer periphery of an iron core, and applies an external magnetic field to a magnetized object disposed close to the iron core. This apparatus for producing a magnetized object is configured to apply magnetic force to the magnetized object, and is characterized by being provided with an advancing/retracting drive means for moving the iron core toward and away from the magnetized object.

In addition, the invention of item 2 of the present application provides a method for manufacturing the magnetized object, which includes applying an external magnetic field to the magnetized object using an electromagnet to apply magnetic force, and then removing the iron core from the magnetized object. The feature is that the characteristics are measured in a state where the magnetized object is separated and residual magnetism in the magnetized object is removed.

[Effect]

According to the apparatus and method for manufacturing a magnetized object according to the inventions of Items 1 and 2 of the present application, the iron core of the electromagnet is placed close to the object to be magnetized and turned away from the object to be magnetized. Magnetization can be achieved by bringing an iron core close to an object and applying an external magnetic field, and after magnetization, the effect of residual magnetism on the object can be avoided by moving the iron core back. Therefore,
When measuring the magnetic force, magnetic properties, or electrical properties of a magnetized object, the magnetized object can be continuously measured in its original position. As a result, the time-consuming adjustment work of taking out the magnetized object once it has been magnetized, performing each measurement at a different location, and setting it again, as in conventional equipment, can be omitted, which can improve work efficiency and ultimately Manufacturing costs can be reduced.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 are diagrams for explaining an apparatus for manufacturing a magnetized object according to an embodiment of the present invention, and in this embodiment, a case will be explained taking as an example a case where a magnetic electronic component is magnetized.

In the figure, l is the magnetized material manufacturing apparatus of this embodiment. This manufacturing apparatus 1 is constructed by arranging a pair of electromagnets 3.3 within an opening 2a of a magnetic circuit case 2. Each of the electromagnets 3.3 is fixed to the earth wall 2b within the opening 2a and the bottom wall 2C facing the earth wall 2b. The electromagnet 3 is constructed by winding a conductor to form a coil 4, and inserting an iron core 5 into the axis of the coil 4 so as to be able to move forward and backward, and the inner end surfaces of the iron cores 5, 5 are 5 m long. , 5a face each other with a predetermined interval, and the magnetic electronic component a is arranged between them. Further, a power source 6 is connected to each coil 4, and an on/off switch 7 is provided to the power source 6.

In the part of the upper wall 2b of the case 2 facing the iron core 5,
An insertion hole 8a larger than the outer diameter of the iron core 5 is formed, and a stepped insertion hole 8b is formed in a portion of the bottom wall 2C facing the iron core 5. In each of the insertion holes 8a, gb, a forward/backward drive means 9 of this embodiment is provided. This driving means 9 is formed by connecting the tip of a cylinder loft 11 of a hydraulic or pneumatic cylinder 10 disposed outside the case 2 to the outer end surface 5b of the iron core 5 through the insertion hole 6. . Although not shown, the cylinder lO is fixed to the case 2.

In addition, the outer surface of the upper wall 2b and the insertion hole 8b of the bottom wall 2C
A U-shaped stopper member 13 is fixed to each inner step, and the cylinder rod 11 passes through the stopper member 13. Furthermore, each of the above cylinder rods 1
1 is equipped with a locking member 12 that comes into contact with the outer surface of each stopper member 13 when the iron core 5.5 moves forward, thereby setting the opposing distance between the iron cores 5.5. Further, when the cylinder rod 11 is retracted, the rear end surface 5b of the iron core 5 comes into contact with the inner surface of the stopper member 13.

Next, a method for manufacturing a magnetized object according to an embodiment of the invention in Section 2 of the present application will be described.

In this embodiment, magnetic electronic components a &
:@The case of adding force will be explained as an example.

First, the cylinder rod 11 is advanced to bring the inner end surfaces 5a of the iron core 5.degree. 5 close to each other, and the magnetic electronic component a is placed between the inner end surfaces 5m and Sa. When the switch 7 is turned on in this state (see FIG. 1), a magnetic field is generated between the iron cores 5, and this magnetic field is applied to the magnetic electronic component a, thereby applying a predetermined value of magnetic force.

Next, the switch 7 is turned off, the cylinder rod 11 is moved backward, and the iron core 5.5 is moved away from the magnetic electronic component a. As a result, residual magnetism exerted on magnetic electronic components is removed (see FIG. 2).

Then, measure the magnetic force, magnetic properties, or electrical properties with the magnetized magnetic electronic component a placed as it is,
If it is necessary to adjust the magnetic force based on the measured value, please adjust the above iron core 5.
is moved forward to be magnetized and demagnetized again, thereby obtaining desired characteristic values.

As described above, according to this embodiment, the advancing/retreating driving means 9 is connected to the iron core 5 of each electromagnet 3, and the iron core 5 is brought close to and 1111 away from the magnetic electronic component a, so that the magnetic electronic component When applying an external magnetic field to part a, place the iron core 5 close to each other,
After magnetization, by retracting the iron core 5, the adverse effects of residual magnetism can be avoided. As a result, magnetic force, magnetic properties, etc. can be continuously measured without moving the magnetic electronic component a, improving work efficiency and productivity, and ultimately reducing manufacturing costs.

In the above embodiments, a pair of iron core coils are used. However, the present invention is not limited to this. For example, as shown in FIG. , even when the iron core coils 17 are disposed facing each other, the iron core 17a may be provided with an advancing/retracting driving means 18 (also, as shown in FIG. 4, a single iron core coil 19 Also, it is sufficient to provide the advancing/retracting drive means 15 on the iron core 19a, and substantially the same effects as in the above embodiment can be obtained in each of these modifications.

Further, in the above embodiment, hydraulic pressure is used as the driving means.

Although the explanation has been given using a pneumatic cylinder as an example, the driving means of the present invention is of course not limited to this, and an electric type such as a motor may be adopted.

(Effects of the Invention) As described above, according to the apparatus and method for manufacturing a magnetized object according to the inventions of Items 1 and 2 of the present application, an external magnetic field is applied to the magnetized object by an electromagnet to add magnetic force. After that, the iron core is separated from the magnetized object, which prevents residual magnetism from acting on the magnetized object, making it possible to continuously adjust the characteristics while avoiding the negative effects of residual magnetism, improving work efficiency. This has the effect of improving productivity.

[Brief explanation of the drawing]

1 and 2 are diagrams for explaining a manufacturing apparatus for magnetic electronic components according to an embodiment of the present invention. FIG. 1 is a schematic diagram showing a state in which a magnetic force is applied to a magnetic electronic component, and FIG. The figure is a schematic diagram showing a state in which the iron core is retracted, FIGS. 3 and 4 are schematic diagrams showing other examples of the above embodiment, and FIG.
The figure is a schematic diagram showing a conventional manufacturing device. In the figure, 1 is a manufacturing device, 3 is an electromagnet, 4 is a coil,
5 is an iron core, 9 is a forward/backward drive means, and a is a magnetic electronic component (magnetized object).

Claims (2)

[Claims] (1) A device for manufacturing a magnetized object, which is equipped with an electromagnet formed by winding a coil around the outer periphery of an iron core, and applies an external magnetic field to a magnetized object placed close to the iron core to add magnetic force. An apparatus for producing a magnetized object, characterized in that an apparatus for producing a magnetized object is provided with an advancing/retracting drive means for moving the iron core toward and away from the object to be magnetized. (2) An electromagnet formed by winding a coil around the outer periphery of an iron core applies an external magnetic field to a magnetized object placed close to the iron core to add magnetic force, and then the iron core is moved to the magnetized object. A method for manufacturing a magnetized object, characterized in that the characteristics of the magnetized object are measured in a state where the magnetized object is separated from the object to remove residual magnetism from the magnetized object.