JPH067530B2 - Collar with core and method of manufacturing the same - Google Patents

Description

TECHNICAL FIELD The present invention relates to a flanged core in which a lead wire end is embedded in one of the flanges, and a method for manufacturing the same.

(Prior Art) Conventionally, in a magnetic core with a flange in which one end of a flange is embedded with a terminal of a lead wire, a pair of flanges is formed to have the same thickness.

This magnetic core is manufactured by the following method.

A cylindrical mold corresponding to the size of the magnetic core is prepared, the mold is filled with magnetic powder, and compression molding is performed to form a columnar magnetic body having a lead wire insertion hole at one end surface. Next, a processing tool is applied to this columnar magnetic body to perform cutting processing for the width of the winding core to form a flanged core. Then, the end of the lead wire is inserted into the lead wire insertion hole formed in one of the collars, and is bonded with an adhesive.

(Problem to be Solved by the Invention) According to the conventional magnetic core with a collar and the method for manufacturing the same as described above, the magnetic core cannot convey the collar having the lead wire insertion holes on the same side in the manufacturing process. Since the lead wire cannot be automatically inserted into the lead wire insertion hole, mass productivity is poor.

If a collar having a lead wire insertion hole is forcibly discriminated, enormous cost is required and large equipment is required.

Therefore, it is an object of the present invention to provide a flanged core and a method for manufacturing the same that can solve the conventional problems as described above.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the first invention of the present application provides a lead wire insertion hole having a collar on both sides of a winding core and formed on the outer surface of one of the collars. In the flanged core formed by inserting and adhering the end of the lead wire, a protrusion is formed on the outer side surface of the other flange that is not provided with a lead wire inside the peripheral portion thereof, and the top surface or apex of the protrusion and the The length between the inner side surfaces of the flange is the same as the thickness of the one flange having the lead wire.

A second aspect of the present invention is a core with a flange, which has circular flanges having the same thickness on both sides of a winding core and which is formed by inserting a terminal of a lead wire into a hole formed in an outer surface of one of the flanges and adhering the end to the lead wire. The outer side surface of the other flange which is not provided is characterized by having a groove passing through the center thereof and reaching both ends at the peripheral edge.

A third aspect of the invention is to form a columnar body having a lead wire insertion hole on one end face and a protrusion on the other end face inside the peripheral portion thereof, and to project from one end face of the columnar body or the other end face. The columnar body is machined with a cutting tool from a position at a predetermined distance from the top surface or the apex, and the thickness of one flange and the top surface or the apex and the inner surface of the protrusion formed on the outer surface of the other flange A flanged core having a length equal to the predetermined distance is formed, the flanged core is hung on a vibrating parts feeder, and a groove having a width approximately equal to the thickness of one flange formed on the side wall of the conveyance path and the other. Convey only the core with a collar in which the peripheral portions of the one collar and the other collar are respectively fitted in a groove having a width substantially equal to the thickness of the peripheral edge of the collar, aligning the collar with the lead wire insertion hole on the same side, A lead wire is inserted into the lead wire insertion hole and bonded.

A fourth aspect of the invention is to form a columnar body having a lead wire insertion hole in one end face and a groove passing through the center of the other end face and reaching both ends to the peripheral edge. One or the other end face of the columnar body is formed. From the position of a predetermined distance from the cylindrical state with a cutting tool to create a flanged core in which the thickness of one of the flanges and the other of the flanges have the length of the specified distance, and the core with a flange is attached to the vibrating part feeder. The two flanges and the other one of the other flanges on the projections that are formed on the side wall of the transport path and are approximately equal to the thickness of the one and the other flanges and the groove formed on the outer surface of the other of the other flanges. Carrying only the flanged core into which the grooves formed on the outer surface fit, aligning the flanges with lead wire insertion holes on the same side, and inserting the lead wires into the lead wire insertion holes,
Characterized by bonding.

(Operation) When the columnar body is cut to form the flanged core, it is not necessary to consider the direction thereof, and when the flanged core is conveyed by the vibrating feeder, in the third invention, the conveyance path is used. Of the flanged core having a width substantially equal to the thickness of one flange of the flange and a groove having a width substantially equal to the thickness of the peripheral edge of the other flange, and the peripheral edges of the one flange and the other flange are fitted respectively. In the fourth aspect of the present invention, only the core with a flange is conveyed, and in the fourth invention, a groove having a width approximately equal to the thickness of both flanges of the flange with a flange formed on the conveyance path, two flanges on the protrusion and a groove formed on the outer surface of the other flange. Only the cores with flanges that are fitted to each other are conveyed, and the flanges having the lead wire insertion holes are aligned on the same side for both cores with flanges. Thus, the lead wire can be automatically inserted into the lead wire insertion hole for each conveyed core with a collar.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a flanged core according to an embodiment of the present invention.

In the figure, the flanged core 1 is made of ferrite, and is provided with flanges 3a and 3b on both sides of the winding core 2. A trapezoidal projection 4 is formed on the outer surface of the collar 3a so as to project inward from the peripheral edge thereof, and two lead wire insertion holes 5 are formed on the outer surface of the other collar 3b. It is inserted and fixed with an adhesive. The thickness w of this collar 3b is the same as the trapezoidal protrusion 4 of the other collar 3a.
The length is the same as the distance w between the top surface of the and the inner surface of the collar 3a.

In order to manufacture this core 1 with a collar, first, as in the conventional method, a ferrite magnetic powder is filled in a mold, and as shown in FIG.
A columnar magnetic body 7 having two lead wire insertion holes 5 formed on the other end surface is molded. Next, as shown in FIGS. 3 (A) and 3 (B), concave portions 9 are formed on the entire peripheral surface of the disk-shaped carrier 8 at predetermined intervals.
The column-shaped magnetic bodies 7 are inserted without considering the orientation, and the disc-shaped carrier 8 is intermittently rotated to position the column-shaped magnetic bodies 7 one by one at a position facing the cutting tool 10. Stop. In the processing tool 10, first, the trapezoidal protrusion 4 having the thickness w of the collar 3b or the collar 3a is provided on the top surface and the collar 3a from the side wall 11 of the recess 9.
The edge should be positioned at a distance equal to the distance w between the inner surfaces of the. Next, the processing tool 10 is brought into contact with the columnar magnetic body 7 and rotated to form the winding core portion 2 on the columnar magnetic body 7, and the flanged core 1 is prepared as shown in the first illustration. Next, the flanged core 1 is put into a known vibrating part feeder 11 as shown in FIG. 4, and the part feeder 11 is operated. Parts feeder 11
Has a conveying path 14 that rises in a spiral shape at the periphery of the supply surface 13 provided on the upper part of the drive unit 12 as shown in the figure. The large number of collared cores 1 mounted on the supply surface 13 has the conveying path 14 proceed. As shown in FIG. 5, grooves 16a and 16b, which are almost equal in thickness to the collars 3a and 3b of the flanged core 1, are formed on the side wall 15 of the conveying path 14 at positions indicated by arrows in the conveying path 14. Is provided with a sorting section 17,
The flanges 3a and 3b of the core 1 with a collar shown in FIG. 1 which have reached the sorting section 17 further advance along the conveying path 14 while being fitted in these grooves 16a and 16b. At this time, the collars 3a and 3b are not fitted in the grooves 16a and 16b, respectively, so that the collared core 1 is repelled from the conveying path 14 and falls from the hole 18 to return to the original supply surface 13. The flanged core 1 in which the sorting section 17 is currency is guided to the next lead wire bonding step. (Not shown).

Instead of the trapezoidal projection 4 of the flanged core 1, a projection having a conical shape, a pyramid shape, a mountain shape or the like may be used.

FIG. 6 shows another flanged core 1A of the present invention.

The flanges 3a and 3b of the core 1A have the same thickness, the outer surface of one of the flanges 3a has a groove 19 that passes through the center and reaches the peripheral edge, and the outer surface of the other flange 3b has a pair of leads. It has a wire insertion hole 5.

As shown in FIG. 7, in the sorting section 17A of the vibrating parts feeder used for the core 1A with the collar, as shown in FIG. 20 is formed, and on the upper wall, the collars 3a and 3b of the core 1A with the collar are grooved 20.
A protrusion 21 that fits into a groove 19 formed on the outer side surface of the collar 3a in a state of being inserted is formed, and thus the flanged core 1A reaching the sorting section 17A is rotated by the vibration to cause the collar 3a to rotate.
When the concave groove 19 of is fitted to the protrusion 21, it passes through the sorting section 17A,
It leads to the next lead wire bonding process.

(Advantages of the Invention) The present invention, which is configured as described above, has an effect that a core with a flange with a lead wire can be efficiently manufactured at low cost, and in particular, mass production by automation becomes possible. .

[Brief description of drawings]

1 is a perspective view of an embodiment of the present invention, FIG. 2 is a perspective view of a columnar magnetic body in the process of being manufactured, and FIG. 3 (A) is a front view of a part of the manufacturing apparatus. (B) is an enlarged perspective view of the main part, FIG. 4 is a perspective view of the vibrating part feeder, FIG. 5 is a sectional view of the sorting part of the vibrating part feeder, and FIG. 6 is another embodiment of the present invention. FIG. 7 is an oblique view of an example, and FIG. 7 is a cross-sectional view of a selection part of a vibrating part feeder used for the flanged core shown in FIG. 1, 1A ... Core with flange 2 ... Core 3a, 3b ... Tsuba 4 ... Trapezoidal protrusion 5 ... Lead wire insertion hole 6 ... Lead wire 7 ... Columnar magnetic body 8 ... Disk-shaped carrier 9 ... Recessed portion 10 ... Cutting Processing tool 11 ... Parts feeder 14 ... Conveyance paths 16a, 16b ... Grooves 17 and 17A ... Sorting section 18 ... Hole 19 ... Concave groove 20 ... Groove 21 ... Rise

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoichi Kurihara 6-16-20 Ueno, Taito-ku, Tokyo Within Taiyo Electric Co., Ltd. (72) Toshiaki Ishiguro 6-16-20 Ueno, Taito-ku, Tokyo Sun Induction Company

Claims (4)

[Claims] Claims: 1. A core with a collar, which has collars on both sides of a winding core, and in which a lead wire end is inserted into a lead wire insertion hole formed on the outer surface of one of the collars and adhered, the lead wire is provided. A protrusion is formed on the outer side surface of the other flange which is not inside the peripheral portion, and the length between the top surface or apex of the protrusion and the inner side surface of the flange is equal to the thickness of the one flange having a lead wire. A core with a collar that is the same. 2. A flanged core having circular flanges of the same thickness on both sides of a core, and the ends of the lead wires being inserted into and adhering to the holes formed on the outer surface of one of the flanges. A core with a collar, characterized in that, on the outer surface of the other collar, which is not provided, there is a groove that passes through the center of the collar and reaches both ends at the periphery. 3. A columnar body having a lead wire insertion hole on one end face and a protrusion inside the peripheral edge portion on the other end face, and a protrusion from one end face of the columnar body or the other end face. The columnar body is machined with a cutting tool from a position at a predetermined distance from the top surface or the apex, and the thickness of one flange and the top surface or the apex and the inner surface of the protrusion formed on the outer surface of the other flange A flanged core having a length equal to the predetermined distance is formed, the flanged core is hung on a vibrating parts feeder, and a groove having a width approximately equal to the thickness of one flange formed on the side wall of the conveyance path and the other. Convey only the core with a collar in which the peripheral portions of the one collar and the other collar are respectively fitted in a groove having a width substantially equal to the thickness of the peripheral edge of the collar, aligning the collar with the lead wire insertion hole on the same side, A core with a collar, characterized in that a lead wire is inserted into the lead wire insertion hole and bonded. Manufacturing method. 4. A columnar body having a lead wire insertion hole on one end face and a groove passing through the center of the other end face and reaching both ends to the peripheral edge is formed, and one or the other end face of the columnar body is formed. From the position of a predetermined distance from the cylindrical state with a cutting tool to create a flanged core in which the thickness of one of the flanges and the other of the flanges have the length of the specified distance, and the core with a flange is attached to the vibrating part feeder. The two flanges and the other one of the other flanges on the projections fitted to the groove formed on the side wall of the conveying path and having a thickness approximately equal to the thickness of the one and the other flanges and the groove formed on the outer surface of the other flange. It is characterized in that only the flanged cores into which the grooves formed on the outer surface fit, are conveyed, the flanges having the lead wire insertion holes are aligned on the same side, and the lead wires are inserted into the lead wire insertion holes and bonded. A method of manufacturing a core with a collar.