JPS62235712A - Manufacture of thin type inductor - Google Patents

Abstract

PURPOSE:To manufacture in high volume and efficiently low-profile inductors which have homogeneous characteristics by combining a primary jig keeping a suction function for a flat-profile magnetic substance with a secondary jig forming a holding space to be used for the flat-profile magnetic substance at a primary jig side. CONSTITUTION:A magnet 3 buried in a primary jig 1 is turned to ON and inner circumferential sides of primary and secondary constrained members 5a and 5b are in contact with an opposite side of a suction face of flat-profile magnetic substance 10 after making the primary and secondary constrained members 5a and 5b actuate in a direction of Y1 with arrow under a state where the magnet maintains its suction of flat-profile magnetic substance 10. This approach helps form a winding space B around a center portion of flat-profile magnetic substance 10. A coil winding operation, therefore, is carried out as follows; i. a tip portion of wire materials 15 wound on a drum 11 of a winding machine is inserted in a clearance groove 4 which is prepared at the primary jig l. ii. drive the winding machine. iii. the wire materials 15 are wound on the winding space B. In such a case, the wire materials 15 im mersed in alcohol liquid 13 serves the purpose of promoting an integration between the wire materials 15 and flat-profile magnetic substance 10 as well as among the wire materials 15. Then termination of such a coil winding work for given winding number in the winding space allows the wire materials 15 to be cut at an end portion of winding, resulting in a construction of a thin type inductor 20.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a method for manufacturing a thin inductor, and particularly to an inductance element such as a magnetic card used for information transmission using various electronic devices. The present invention relates to a method of manufacturing a thin inductor suitable for use as a thin inductor.

(Prior Art) In recent years, various electronic devices used as means of information transmission have tended to be lighter and smaller, and electronic components used as information transmission media used in such electronic devices, such as magnetic cards, have also become thinner. There is an inevitable need to make it more compact and compact.

By the way, the thin inductor shown in FIG. 7 is known as a component of the magnetic card.

This thin inductor 20 has a diameter of 0 on the outer periphery of a thin magnetic body 10 formed in an elliptical shape with a thickness of about 0.5 to 31 mm, for example.
．． Although it is made by winding a wire (copper wire) 15 of about 1 to 0.3 wm, the conventional method of manufacturing this thin inductor 20 includes the following problems.

For example, in the conventional manufacturing method, a circular thin magnetic material lO
One method is to manually wind the copper wire 15 around the outer periphery of the wire, but this method is not suitable for mass production and tends to cause variations in characteristics.

Another known method is to sandwich the thin magnetic material 10 between a pair of jigs and wind the copper wire 15 between the two jigs using a winding machine. There is a problem in that a thin inductor with uniform characteristics cannot be obtained due to misalignment of the clamping position of the shaped magnetic body 10.

(Problems to be Solved by the Invention) As described above, the conventional method for manufacturing thin inductors has the drawbacks of not being able to ensure uniformity of characteristics and lacking in mass productivity.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method for manufacturing a thin inductor that is superior in terms of uniformity of characteristics and mass productivity.

[Structure of the Invention] (Means for Solving the Problems) The method for manufacturing a thin inductor of the present invention includes a first jig having an attraction function for a magnetic material, and a side surface or a vicinity of the side surface of the first jig. Using a second jig configured to be capable of opening and closing operations and moving operations relative to the first jig,
Holding the thin magnetic material in a predetermined position on the side surface of the first jig,
Next, while the thin magnetic body is attracted by the suction function of the first jig, the second jig is opened, closed, and moved. A winding space containing the thin magnetic material is formed between the second jigs, a wire is wound in this winding space, the second jig is moved to release the winding space, and the first The suction force on the jig is released and the magnetic material with the wire wound thereon is taken out.

(Function) In this method of manufacturing a thin inductor, a second jig capable of opening/closing and moving operations is placed on the side surface of a first jig having an attraction function for a thin magnetic material, and then the second jig is The jig is opened to form a holding space for the thin magnetic material by the second jig on the side surface of the first jig. Then, a thin magnetic body is mounted in this holding space using a parts feeder or the like, and the second jig is closed to fix and hold the thin inductor on the side surface of the first jig.

Next, the suction function of the first jig is exerted to attract the thin magnetic material at the fixed position, and at the same time, the second jig is opened, moved away from the first jig, closed, and The first jig is approached continuously, and the second jig is placed on the other side of the thin magnetic body while the thin magnetic body is held in a fixed position by the suction function. to form a winding space surrounding the thin magnetic material.

Next, using a winding machine or the like, the wire is wound a required number of times in the winding space, and the rear end of the winding is cut if necessary.

Next, the second jig is separated from the winding space, the suction function of the first jig is canceled, and the thin inductor having the wire wound around the outer periphery of the thin magnetic material is taken out.

(Example) Examples of the present invention will be described in detail below.

First, the first . The second jig 1.2 will be explained with reference to FIGS. 1 and 2.

The first jig 1 is formed into a disk shape, and an electromagnet 3 as a suction means is embedded in the center of one side 1a, and the electromagnet 3 is connected to a power source with a switch (not shown). This causes a magnetic attraction force to be exerted on the other side surface lb. Moreover, the other side surface 1b of this first jig 1! From near the center to the outer edge! As shown in FIG. 2, an escape groove 4 is provided through which a winding wire material, which will be described later, can be inserted.

The second jig 2 has a semicircular shape divided into upper and lower parts in FIG. It consists of second restraining members 5a and 5b, and both restraining members 5a and 5b are connected to the first jig l as shown in FIG.
While sliding in contact with the first jig or in a state parallel to the first jig in the vicinity of the first jig, open/close operations are performed in the directions of arrows Yl and Y2 shown in the same figure, and at the same time
It is designed to move back and forth in two directions.

This first. Due to the opening/closing and movement operations of the second restraining members 5a and 5b, a holding space A for the thin magnetic body 10 and a holding space A for the thin magnetic body 10 and a space for holding the thin magnetic body 10 on the side of the center of one side surface 1b of the first jig 1 are formed.
A winding space B is formed for the winding space B.

The opening/closing and moving operations of the second jig 2 are performed by an arm mechanism (not shown).

Next, the first. An example of the method for manufacturing the thin inductor 20 using the second jig 1.2 is shown in FIGS.
This will be explained with reference to Figures (al) and (b).

First, the first step will be explained. As shown in Fig. 3 (Ta), with the electromagnet 3 embedded in the first jig 1 turned off, the second jig 2 is placed in sliding contact with the first jig 1 while facing away from it. 1st. The second restraining members 5a, 5b,
The holding space A is formed on the side of the center of the side surface 1b of the first jig 1 by opening in the direction of the arrow Y shown in the figure.

Next, as shown in FIG. 3 (bl), a thin magnetic material 10 with a thickness of about 0.5 to 3 ml is placed in this holding space A using a parts feeder or the like. Furthermore, as shown in FIG. 1. After holding and fixing the thin magnetic body 10 in the holding space A by closing the second restraining members 5a and 5b in the direction of arrow Y2 shown in the figure, the electromagnet 3 is turned on as shown in FIG. 3 (dl). This thin magnetic body 10 is attracted and held at the center of the side surface 1b of the first jig 1.

This completes the first step.

Next, the second step will be explained. As shown in FIG. 4 (al), the electromagnet 3 is turned on and the thin magnetic body 10 is attracted and held by the first and second restraining members 5a.

After opening 5b again in the direction of arrow Y1, the fourth exit)
As shown in 1. Second restraining member 5a.

5b is moved in the force direction by arrow X shown in the same figure, and then
el in the direction of arrow Y2, and in this state, move in the direction of arrow X2 as shown in the same figure (dl, that is,
Move it in the direction approaching the first jig 1 side. and,
1st. The opposing inner peripheral side surfaces of the second restraining members 5a and 5b are brought into contact with the side surface of the thin magnetic body 10 opposite to the attraction surface, thereby creating a winding space centered on the thin magnetic body 10. Form B. The second step is thus completed.

Next, the third step will be explained. First, Figure 5 ial
As shown in the figure, the tip of a wire (copper wire, cement wire) 15 with a diameter of about 0.1 to 0.3 fi wound around a drum 11 of a winding machine is wrapped with a thin magnetic material in a first jig 1. lO
After inserting a predetermined length into the escape groove 4 provided so as to face the vicinity of the outer periphery of the wire rod 1, the winding machine is driven and the wire rod 1 is inserted into the winding space B.
Wind 5.

At this time, as shown in FIGS. and promotes the integration of the wire rods 15 with each other.

Then, when the wire rod 15 has been wound a predetermined number of times in the winding space, the end portion of the wire rod 15 is cut using a cutting machine (for example, a cutter) not shown, as shown in FIG. 5(C). An inductor 20 is configured. This completes the third step.

Next, the fourth step will be explained. As shown in FIG. 6fal, while maintaining the ON state of the electromagnet 3, both the first and second restraining members 5a and 5b are moved by the arrow X.

After moving the thin inductor 20 to the side and separating them laterally, the electromagnet 3 is moved to the
Make it F. As a result, the attractive force of the electromagnet 3 on the thin inductor 20 is released, and the thin inductor 20
is the first due to its own weight. It falls below the second jigs 1 and 2.

At this time, the winding start portion of the wire 15 is connected to the thin inductor 20.
Since the thin inductor 20 is automatically removed from the relief groove 4 as it falls, it becomes possible to take out the thin inductor 20 without any hindrance. After this, the first jig constituting the second jig 2. By returning the second restraining members 5a and 5b to the position where the opening operation is performed in the direction of the arrow Y1 in FIG.
This process is completed and preparations are made for manufacturing the next thin inductor.

By repeating the first to fourth steps as described above many times, a large number of thin inductors 20 having uniform characteristics can be produced.
can be manufactured efficiently.

In addition, since the winding operation of the wire 15 is performed with the winding start portion of the wire rod 15 escaped from the winding space B by the escape groove 4, the winding start portion can be properly processed, and compared to the conventional method. It is possible to prevent the starting portion of the winding from becoming thicker as shown in FIG.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the invention. For example, in the embodiment described above, the second jig is divided into two parts, and the first jig is divided into two parts.
Although a case has been described in which the second restraining member is used, the present invention is not limited to this, and the present invention can also be implemented by using a restraining member divided into a large number of parts.

Further, in the above-described embodiments, the case where the suction function of the first jig is realized by an electromagnet has been described, but it can also be realized by using air pressure or the like, for example. Further, in the above-described embodiments, the first jig is provided with an escape groove, but the first jig without the escape groove may also be used.

Further, when solidifying the cement wire, it can also be carried out by passing an electric current through which the wire is appropriately heated after completing the third step to solidify the wire.

[Effects of the Invention] According to the present invention described in detail above, it is possible to provide a manufacturing method that can efficiently manufacture thin inductors having uniform characteristics in large quantities through cyclic operations in the first to fourth steps. can.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the structure and operation of the first and second jigs used in the embodiment of the present invention, Fig. 2 is a perspective view showing the same first jig, and Fig. 3 (a ). (b), (c), and (d> are operation explanatory diagrams that do not indicate the first step in the embodiment of the present invention, respectively.
), (c), and (d) are operation explanatory diagrams showing the second step of the same as above, respectively, and FIG. 5(a). (b) and (c) are operation explanatory diagrams that do not show the third step, respectively, and FIGS. Fig. 7 is a perspective view showing the external appearance of the thin inductor. 1... First jig, 2... Second jig, 3... Electromagnet, 4... Relief groove, 10...・Thin magnetic material, 15・
...Wire rod, 20...Thin inductor. q) □・ '−'／ , −% −

Claims (2)

[Claims] (1) A first jig that has a suction function for a magnetic material, and a second jig that is configured to be able to open and close on or near the side of the first jig and move relative to the first jig. holding the thin magnetic material in a predetermined position on the side surface of the first jig using a suction function of the first jig; A step of forming a winding space containing a magnetic material between the first and second jigs by opening, closing and moving the jigs, a step of winding a wire in this winding space, and a step of winding the second jig. A method for manufacturing a thin inductor, comprising the steps of moving to release the winding space, and releasing the attraction force in the first jig to take out the thin magnetic material on which the wire has been applied. (2) The thin inductor according to claim 1, wherein the suction function of the first jig is exerted by the suction force of an electromagnet provided substantially at the center of the first jig. manufacturing method.