KR100770773B1 - Process for inductor - Google Patents

Abstract

A method for manufacturing an inductor is provided to reduce a manufacturing process of the inductor by enclosing a coupling line using a pressing process. A coupling line coupler attaches a coupling line(21) on a groove(22), which is formed at both sides of a ring core before a drum core(10) is inserted into the ring core. A coil(11) and an insulation tape(12) are wound around the drum core. Both ends of the coil are arranged to be close to coupling lines. A thermosetting adhesive agent is applied on an upper surface of the drum core. An inductor, which is formed by coupling the ring core with the drum core, is dried in a thermal drier. The inductors are arranged on a planar jig in one row. Both sides of the inductor are arranged at both side surfaces of the correspond jig. The coupling line of the inductor is thermally attached to the coil.

Description

Inductor manufacturing method {PROCESS FOR INDUCTOR}

1 is a perspective view showing the structure of a drum core.

2 is a perspective view showing a ring core having no linkage line.

3 is a perspective view illustrating a drum core fixed to a coil winding machine and wound with a coil and an insulating tape.

4A is a front view showing a state in which a link core is fixed by a fixing jig.

4B is a longitudinal sectional view of the broken line A-B.

Figure 4c is a longitudinal cross-sectional view A-B in a state in which the left and right bending jig flows.

4D is a longitudinal cross-sectional view of the A-B in a state where the upper bending jig descends and the linkage line is bent from the top to the bottom to the inner circumferential surface of the ring core.

4E is a longitudinal cross-sectional view of the A-B in a state in which the lower bending jig is raised and the linkage line is bent to the inner circumferential surface of the ring core from the lower portion to the upper portion thereof.

5 is a perspective view showing a process in which the drum core is inserted into the ring core.

6 is a perspective view illustrating a process in which a thermosetting adhesive is applied after a drum core is inserted into a ring core.

7 is a plan view and one side view of a plurality of inductors arranged on a jig.

The present invention relates to a method for manufacturing an inductor, and more particularly, to a method for manufacturing an inductor formed by inserting a drum coil wound around a coil into a ring core having a linkage wire wound as a charging pin.

In general, the charging pin mounted on the ring core is a metal, and includes a lead for fixing the extension coil from the drum core. The charging pin including the lead has to go through a difficult pressing and mold procedure and uses an epoxy adhesive core. Since it must be assembled with the automation is difficult, there is a problem that it is not easy to reduce the labor.

In addition, a drum core is inserted into a ring core equipped with a charging pin, and a coil extending from the drum core is thermally bonded to a lead of the charging pin. In this process, a charging pin formed of an adhesive on the ring core is thermally bonded. There is a problem of falling off due to high temperature.

In order to solve the problems described above, the present invention has a superior ductility corresponding to the charging pins, so that the connecting pins that are easily bent and cut are attached to the ring cores so that the charging pins do not fall off from the ring cores even after the thermal bonding formed by the drum cores. To provide an inductor manufacturing method.

Still another object of the present invention is to provide an inductor manufacturing method that enables fast and easy formation of a linkage line corresponding to a charging pin on a ring core through an automated manufacturing process, thereby reducing labor costs and increasing price competitiveness. It is.

Inductor manufacturing method according to the present invention for achieving the above object has an interlocking line 21 is made by inserting the drum core 10, the coil 11 is wound inside the ring core 20, the upper and lower surfaces are opened. In the method of manufacturing an inductor, (a) before inserting the drum core 10 into the ring core 20, the interlocking wire decoupling device is interlocked with the grooves 22 formed on both sides of the ring core 20. Attaching the line 21 (S30); (b) inserting the drum core 10 wound with the coil 11 and the insulating tape 12 into the ring core 20 on which the linkage line 21 is wound, and winding the drum core 10 around the drum core 10. Placing one end and the other end of the coil 11 close to both linkage lines 21 wound on the ring core 20 (S40, S50); (c) an inductor in which the drum core 10 and the ring core 20 are bonded to each other by applying a thermosetting adhesive to the upper surface of the drum core 10 to which the link core 20 and the drum core 10 are coupled. Drying (40) in a heat dryer (S60, S70) and (d) Arrange the inductors 40 in a line on a flat jig 44, the linkage line 21 and the coil of the inductor 40 ( 11 are placed on both sides of each side of the jig 44, respectively, on which both sides of the jig 44 are positioned, and simultaneously thermally bonding the interconnecting lines 21 and the coils 11 of the arranged inductors 40 through soldering. S80); Characterized in that it comprises a.

Preferably, the drum core 10 is fixed to the drum core fixture 32 of the coil winding machine 30 that rotates as power is applied, and the coil winding machine 30 rotates at the same time as the power is applied. Winding the coil 11 and the insulating tape 12 on the drum core 10 (S10 and S20); Characterized in that it comprises a.

More preferably, step (b) (b-1) fixes the ring core 20 into which the linkage wire decoupling device is continuously introduced with upper and lower fixing jigs 41 and 41`, and the grooves 22 Positioning linkage lines on both sides of the corresponding link core 20 formed with S) and S32; (b-2) Left and right bending jigs (42, 42`) of the linkage wire desorption device is introduced into the linkage (20) to the linkage line (21) located on both sides of the ring core (20) Bending to fix it (S33); And (b-3) the upper and lower bending jig (43, 43`) of the interlocking wire desorption device flows into the center of the ring core (20) perforated to connect the linking wire (21) to the linking core (20) It characterized in that it comprises a; step (S34, 35) bending to the inner peripheral surface of the.

More preferably, after the drum core 10 is inserted into the ring core 20, the inductor 40 to which the heat curable adhesive is applied is heated in a heat dryer at 130 ° C. to 140 ° C. for 1 hour to 1 hour 30 minutes. It is characterized by being dried.

More preferably, the width of the flat jig 44 in which the inductors 40 are arranged corresponds to the diameter of the corresponding inductor 40.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, the present invention prevents the charging pin from falling off from the ring core even when the thermal bond is formed after the coil core is wound by inserting the interlocking line, which is easy to bend and cut, onto the ring core because of the excellent ductility corresponding to the charging pin. An inductor manufacturing method that can increase cost competitiveness by allowing the linkage line corresponding to the charging pin to be quickly and easily formed in the ring core through an automated manufacturing process will be described as a preferred embodiment, but the technical idea of the present invention is limited thereto. Of course, the present invention may be modified and variously modified by those skilled in the art without being limited thereto.

1 is a perspective view showing the structure of the drum core, FIG. 2 is a perspective view showing a ring core without an interlocking line, FIG. 3 is a perspective view showing a drum core fixed to the coil winding machine and the coil and the insulation tape are wound. 4a is a front view showing a state in which the link core is fixed by the fixing jig, FIG. 4b is a longitudinal cross-sectional view of the broken line AB, FIG. 4c is a longitudinal cross-sectional view of the AB in a state where the left and right bending jigs are introduced, and FIG. 4d is a top bending jig. It is the AB longitudinal cross-sectional view in the state where the linkage line is bent to the inner circumferential surface of the ring core to descend from the top, and Figure 4e is the lower bending jig is raised and the linkage line is bent to the inner circumferential surface of the ring core from the bottom to the top AB is a longitudinal cross-sectional view, Figure 5 is a perspective view showing the process of the drum core is inserted into the ring core, Figure 6 is a drum core is inserted into the ring core after the thermosetting adhesive is applied A perspective view showing a process, Figure 7 is a plan view of a plurality of inductors arranged on the fixture with one side.

The inductor according to the present invention is a drum core 10, a coil 11 wound on the drum core 10, an insulating tape 12 wound on the wound coil 11, the coil 11 and the insulating tape 12 includes a ring core 20 into which the drum core 10 wound is inserted.

The drum core 10 has a circular upper and lower surfaces as shown in FIG. 1, and a central axis of a cylinder having a lower circular surface smaller than the smaller one of the upper and lower surfaces is located between the upper and lower surfaces.

The coil 11 is wound at least once on the drum core 10 to determine the inductance of the inductor 40.

Thereafter, the insulating tape 12 is wound on the drum core 10 on which the coil 11 is wound, so that a thermosetting adhesive applied for adhesion of the drum core 10 and the ring core 20 is coated on the coil ( 11) to prevent seeping into.

The ring core 20 has an outer circumferential surface as shown in FIG. 2 and has a predetermined space having an octagonal shape and a circular inner circumferential surface, and has an upper and lower open ring structures, and an interlocking line on the upper surface of the ring structure formed by the outer circumferential surface and the inner circumferential surface. The grooves 21 are formed with equally spaced grooves 22 so that the 21 is properly fixed in position.

Of course, the outer circumferential surface of the ring core 20 can be implemented in another polygon, not octagonal, and the inner circumferential surface can also be variously implemented without being limited to a circular shape.

In the groove 22 formed in the ring core 20 having the above-described structure, a linkage line 21 having excellent electrical conductivity and ductility is formed by an enclosing device that can be automated.

The copper wire 21 is made by annealing pure copper at 450 ° C. to 600 ° C. (annealing method for making the material stable as shown in the equilibrium diagram), and having excellent electrical conductivity of 101 to 107% and Flexible wire is made by crimping.

A detailed description will be given of a method of manufacturing an inductor in which the drum core 10 and the link core 20 on which the linkage line 21 is wound are coupled.

First, as shown in FIG. 3, the coil winding machine 30 for winding the coil 11 to the drum core 10 may include a display unit 31, a drum core fixture 32, a fixture enlargement button 33, and the like. It is composed of a power-on button 34.

First, the drum core 10 is partially inserted into the drum core fixture 32 which is enlarged at the same time as pressing the fixture enlargement button 33, and releases the fixture enlargement button 33 in the pressed state and the original state. Performs a step of being fixed to the drum core fixture 32 to be contracted (S10).

The coil winding machine 30 fixing the drum core 10 is rotated by the power applied as the power applying button 34 is switched by the pressing of the foot.

By the rotation of the coil winding machine 30, the coil 11 is wound around the drum core 10 fixed to the coil winding machine 30.

In this case, the display unit 31 of the coil winding machine 30 is wound around the drum core 10 to display the number of rotations of the coil for determining the inductance of the inductor 40.

The drum core 10 wound around the coil 11 performs the step of winding the insulating tape 12 (S20).

The insulating tape 12 wound on the drum core 10 is to prevent the adhesive from penetrating when applying the thermosetting adhesive, which will be described later.

Before the drum core 10 is inserted into the ring core 20, pure copper is annealed at 450 ° C. to 600 ° C. in the ring core 20, a process for bringing the material into a stable state as shown in the equilibrium diagram. Method) is performed through the step that the interlocking wire 21 is made by pressing a wire (wire) having excellent electrical conductivity and ductility of about 101 ~ 107% is carried out (S30).

In the step of S30, the linkage line 21 is attached to the ring core 20 by a linkage line decompressor (not shown).

First, as shown in FIG. 4A, when a link core 20 having no linkage line 21 is formed in the linkage line attachment device, the link core 20 is upper and lower fixing jigs 41 and 41`. The fixed step is performed (S31).

The fixing jig 41 is a tool used to determine and precisely support the machining position of a part in a machine tool. In the embodiment of the present invention, the fixing jig 41 serves as a support for assisting the coupling of the ring core 20 and the linkage line 21. .

The following procedure is explained in more detail through the cross-sectional view of the broken line A-B.

When the link core 20 is fixedly positioned at step S31, as shown in FIG. 4B, the link line 21 is positioned at both sides of the link core 20 (S32).

When the linkage line 21 is positioned at both sides of the link core 20 in step S32, as the bending jig 42 and 42` positioned at both sides of the linkage line are simultaneously introduced inwards, as shown in FIG. 4C. The linkage line 21 is bent to perform the step of being fixed to the outer circumferential surface of the corresponding link core 20 (S33).

In the step S33, the bending jig 43 into which the linkage line 21 in a fixed state is attached to the outer circumferential surface of the ring core 20 is introduced from the upper side into the center of the ring core 20 perforated. Accordingly, as shown in FIG. 4D, the link line 21 is bent to the inner circumferential surface of the link core 20 (S34).

In step S33, the bending jig 43` into which the interlocking line 21 in a fixed state is fixed to the outer circumferential surface of the ring core 20 is introduced from the lower portion, so that the bending jig 43` is introduced into the center of the ring core 20 which is perforated. Accordingly, as shown in FIG. 4E, the link line 21 is bent to the inner circumferential surface of the link core 20 (S35).

As a result, the link core 20 on which the linkage line 21 is wound is completed, and the ring core 20 wound around the coil 11 in step S20 is shown in FIG. 5. In step S40, the insertion step is performed.

At this time, one end and the other end of the coil 11 wound on the drum core 10 is positioned to a portion where the linkage line 21 of the ring core 20 is depressed so that the length of the thickness of the corresponding ring core 20 is 1/2. The cutting step is performed as much (S50).

Subsequently, the drum core 10 in contact with the edge surface of the ring core 20 formed by the outer circumferential surface and the inner circumferential surface of the ring core 20 as the drum core 10 is inserted into the ring core 20 in step S50. 6, a step of applying a thermosetting adhesive with an adhesive applicator 45 of a syringe model as shown in FIG. 6 is performed (S60).

The inductor 40, which is a combination of the ring core 20 and the drum core 10 coated with the thermosetting adhesive in the step S60, is put in a heat dryer (not shown) for about 1 hour to 1 hour 30 minutes at 130 ° C. The step of drying at a temperature of (S70).

A plurality of inductors 40 formed by combining the ring core 20 and the drum core 10 through the steps S10 to S70 are lined up on the flat jig 44 as shown in FIG. Arranged in such a manner that one end and the other end of the coil 11 wound on the linkage line 21 and the drum core 10 through heat treatment are performed (S80).

The surface where the linkage line 21 and the coil 11 are located is arranged at both sides in the longitudinal direction of the flat jig 44 as shown in FIG. 7 (b), and the width of the flat jig 44 is It is almost equal to the diameter of the inductor 40.

Subsequently, both sides of the jig 44 in which the linkage line 21 and the coil 11 are positioned are in contact with the hot melting plate (not shown) in which lead is melted, and the inductors 40 are arranged in a line on the jig 44. The interlocking wire 21 and the coil 11 are simultaneously soldered through the lead.

Finally, the pure resistance and inductance of the inductor 40 heat-treated in the step S80 is measured to determine whether the corresponding inductor 40 is normal (S90).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those of ordinary skill in the art to which the present invention pertains. It is not limited to drawing.

As described above, the inductor manufacturing method according to the present invention is an automated process by the device formed on both sides of the ring core to enclose the interlocking line (enclosing) the linkage line acting as a charging pin without a difficult pressing procedure Including the process to be bent and cut to the ring core by bending and cutting it has the effect of enabling the reduction of labor.

Claims (5)

In the manufacturing method of the inductor having an interlocking line (21) made by inserting the drum core 10, the coil 11 is wound around the ring core 20, the upper and lower sides are opened, (a) Before inserting the drum core 10 into the ring core 20, the linkage wire decoupling device to bond the linkage line 21 to the grooves 22 formed on both sides of the ring core (20) Step S30; (b) inserting the drum core 10 wound with the coil 11 and the insulating tape 12 into the ring core 20 on which the linkage line 21 is wound, and winding the drum core 10 around the drum core 10. Steps (S40, S50) of one end and the other end of the coil 11 in close proximity to the two interlocking lines 21 attached to the ring core (20): (c) an inductor in which the drum core 10 and the ring core 20 are bonded to each other by applying a thermosetting adhesive to the upper surface of the drum core 10 to which the link core 20 and the drum core 10 are coupled. Drying the 40 in a heat dryer (S60, S70) and (d) The inductors 40 are arranged in a line on the flat jig 44, and both sides of the inductor 40 where the linkage line 21 and the coil 11 are located are both sides of the jig 44. Placing at the side surfaces and simultaneously thermally bonding the interconnecting lines 21 and the coils 11 of the corresponding inductors 40 through soldering (S80); Inductor manufacturing method comprising a. The method of claim 1, Before step (a) above, The drum core 10 is fixed to the drum core fixture 32 of the coil winding machine 30 that rotates as power is applied, and the coil winding machine 30 rotates at the same time as the power is applied. Winding the coil 11 and the insulating tape 12 in the step (S10, S20); Inductor manufacturing method comprising a. The method according to claim 1 or 2, Step (b) is (b-1) Both side surfaces of the link core 20 having the grooves 22 formed thereon by fixing the link core 20 into which the linkage wire decoupling device continuously flows with the upper and lower fixing jigs 41 and 41`. Positioning an interlocking line at (S31, S32); (b-2) Left and right bending jigs (42, 42`) of the linkage wire desorption device is introduced into the linkage (20) to the linkage line (21) located on both sides of the ring core (20) Bending to fix it (S33); And (b-3) The upper and lower bending jigs 43 and 43` of the interlocking wire decoupling device flow into the center of the perforated ring core 20 to transfer the interlocking wire 21 to the center of the linking core 20. And bending the inner peripheral surface (S34, 35). The method of claim 3, wherein After the drum core 10 is inserted into the ring core 20, the inductor 40 coated with a heat curable adhesive is dried in a heat dryer at 130 ° C. to 140 ° C. for 1 hour to 1 hour 30 minutes. Inductor manufacturing method. The method of claim 4, wherein The width of the flat jig (44) in which the inductors (40) are arranged corresponds to the diameter of the corresponding inductor (40).

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