KR101430712B1 - Inductor for air-core coil winding Mold and Air-core coil winding method by winding mold - Google Patents

Abstract

A mold for winding an air-core coil for inductor, and a method for winding an air-core coil using the mold for winding according to the present invention are a mold (1) which is formed with a coil line(C) having no core for winding an air-core coil (HC) for inductor which induces a voltage proportional to the variation of current, comprise a plate-shaped lower mold (10) which is formed in a lower part; a plate-shaped upper mold (20) which is mounted on the top of the lower mold (10); and a plate-shaped terminal plate (30) which is mounted on the top of the upper mold (20) and is made up of a plurality of terminals (T) which are attached to a lead in line (C1) and a lead out line (C2) of the coil line (C). The lower mold (10) includes a plurality of cylindrical mold cores (11) which form the central axis of the air-core coil (HC) when the coil line (C) is wound while upwardly raising the lower mold. In both sides of the lower mold (10), a dent-shaped grip groove (12) is formed to make a user to grip easily, when separating the upper mold, (20) which is mounted on the top of the lower mold (10), is formed. Therefore, the winding of air-core coil mounted on a small inductor can be easily done, and also, a large amount of winding can be performed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mold for winding an air core coil for an inductor, and an air core coil winding method using the same,

The present invention relates to a mold for winding an inductor coil and an air core coil winding method using the mold for winding the coil. More particularly, the present invention relates to an inductor for easily winding an air core coil mounted on a small inductor, And a method of winding an air core coil using the metal mold for winding the coil.

Generally, electronic devices are devices that automatically perform predetermined tasks to make life easier for a person, and are made of a printed circuit board, a transmission line, and an electronic component such as an electronic device Device.

In recent years, the amount of information to be processed has increased as a result of miniaturization, high capacity, and high efficiency of electronic devices such as smart phones and tablet PCs. However, due to miniaturization of electronic devices, parts and electronic devices, It is becoming more compact according to the size of the device.

Here, in the electronic device mounted inside the electronic device, an inductor having a coil for inducing a voltage in proportion to a change amount of a current is provided. The coil has a core for inducing a winding at the center And an air core coil in which a core core provided with a core is not provided.

As a technical literature on a conventional inductor, Registration Utility Model No. 20-0322720 has been disclosed, which is a technical document for an ultra-small inductor according to a miniaturized electronic device, and is related to the core coil.

1A, a conventional micro-inductor 100 includes a drum-type ferrite core 110 having a top flange 150 and a bottom flange 160, as shown in FIG. 1A. FIG. 1 is a cross-sectional side view showing the structure of a conventional micro- The copper wire 130 is wound on the metal terminal 140 provided on the flange 160 and the copper wire 130 is soldered.

1B, a conventional micro-inductor 100 'is formed by winding a copper wire 130 through a drum-type ferrite core 110, and a base 120 made of resin or ceramics, After the terminal 140 'is formed, the copper wire 130 is connected and fixed to the terminal by soldering or welding.

In order to reduce the thickness of the conventional micro-inductors 100 and 100 'to 1.2 mm or less, the height of the drum-type ferrite core 110 must be 1.0 mm or less so that the terminals (140) and the base (120).

Therefore, in order to fabricate the conventional micro-inductors 100 and 100 ', the upper and lower flanges 150 and 160 formed on the drum-type ferrite core 110 must be designed to have a thickness of 0.35 mm or less, that is, There is a problem that production efficiency is lowered.

Further, when the upper and lower flanges 150 and 160 formed on the conventional microinductors 100 and 100 'are thinned to a thickness of 0.35 mm or less, the strength thereof becomes very weak, so that the terminals are connected and fixed during the manufacturing process of the inductors 100 and 100' There is a problem that the upper and lower flanges 150 and 160 are damaged or broken in the welding with high temperature.

Conventionally, an inductor of an air-core coil type has been developed which solves the above-mentioned problem and has a simpler structure. In the conventional air-core coil type inductor, a coil having no core is formed therein, and terminals are connected to both ends of the coil And then molded with a mold material of ferrite material so that the terminal can be protruded to the outside.

However, the conventional inductor of the air-core type has a problem that the efficiency of winding the air-core coil is very low because the height of the air-core coil is too thin due to the height of the miniaturized inductor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art and it is an object of the present invention to provide a method of manufacturing a metal mold in which a plurality of mold cores formed in a lower mold are passed through an upper mold, A plurality of air core coils are wound in a convenient and uniform shape and the upper mold and the lower mold are separated from each other so that the mold cores are separated in a single process from a plurality of wound core coils and a grip groove is formed on both sides of the lower mold The upper mold is easily gripped when the lower mold and the upper mold are separated from each other and a plurality of fixing protrusions protruded upward from the upper surface of the lower mold are formed to firmly couple the upper mold and the lower mold, A plurality of protruding coil-winding wire protrusions are formed, and a plurality of air-core coils wound on the mold core are wound in a predetermined shape Key is to provide an air-core coil winding method using the mold and the mold winding to the inductor winding air core coil to accurately contact the air-core coil and the terminal with those.

According to another aspect of the present invention, there is provided a mold for winding an inductor coils for induction of voltage, the coils for winding inductor coils for inducing voltage in proportion to a change in current, A lower mold having a plate shape; A plate-shaped upper mold positioned on the upper portion of the lower mold; And a plate-shaped terminal plate which is seated on the upper mold and has a plurality of terminals joined to lead lines and lead lines of the coil lines; A plurality of cylindrical mold cores forming a central axis of the coin coil when the coil wire is wound up, the upper mold being vertically upwardly formed, and upper molds seated on upper portions of the lower molds on both sides of the lower mold, A grip groove having a concave groove shape is formed so as to facilitate the user's gripping; And the upper mold has a plurality of core through holes formed therein such that the mold core penetrates the upper portion of the upper mold.

A plurality of fixing protrusions protruding upwardly are formed on the upper surface of the lower mold; The upper mold has a protrusion insertion hole into which the fixing protrusion is inserted to prevent the upper mold, which is seated on the lower mold, from shaking in a horizontal direction.

The upper metal mold is formed with a plate seating portion protruding upward from the outer side of the core through hole so as to be easily separated after the terminal plate is seated.

A plurality of plate fixing protrusions protruding upward are formed on one surface of the upper mold so as to prevent the terminal plate from being horizontally moved after being mounted; And a fixing protrusion bored in which the plate fixing protrusion is inserted is formed on one surface of the terminal plate.

And a plurality of coil winding wire protrusions are formed on an upper portion of the upper mold so as to guide the lead-in direction of the lead wire when the coil wire is wound around the mold core, do.

According to another aspect of the present invention, there is provided an air core coil winding method using a mold for winding an inductor core coil, the method comprising the steps of placing an upper mold on an upper portion of the lower mold and projecting the mold core to an upper portion of the upper mold, A preparation step; A terminal plate seating step of placing the terminal plate on an upper surface of the upper mold; A coil winding step of winding the coil wire on a mold core protruded to an upper portion of the upper mold; A terminal fusion step of thermally fusing a terminal provided on the terminal plate to a lead line and a lead line of a coil wire wound around the mold core; A lower mold disengaging step of vertically lifting the upper mold from the lower mold to remove the mold core from the coil line wound; And a terminal plate releasing step for releasing the coil wire wound on the upper mold and the fused terminal plate.

An air core coil separating step of separating a plurality of air core coils fused to the terminal plate together with the terminals after the terminal plate disengaging step; And an air core coil molding step of molding the air core coil so that the terminal protrudes to the outside after the air core coil separation step.

Wherein the coil winding step comprises winding the coil wire on the first coil winding wire protrusion and moving the coil wire to the mold core; A first winding step of winding the coil wire from the lower side to the upper side of the mold core; A second winding step of winding the coil wire from the upper side to the lower side of the mold core; And a coil wire drawing step of winding the coil wire on the second coil winding wire projection and then moving the coil wire to the next mold core.

As described above, the method for winding the core coil for inductor according to the present invention and the method for winding the core coil using the mold for winding have the following effects.

First, a plurality of mold cores formed on a lower mold are passed through an upper portion of an upper mold on which a winding operation is performed, so that an air core coil in which no core exists can be wound in a convenient and constant shape,

Second, the lower mold and the upper mold are mutually seated, the coil wire is wound on the mold core protruded by the upper mold, and then the lower mold and the upper mold are separated from each other. Thus, in the plurality of air core coils wound on the upper mold, Can be separated into a single process, thereby increasing workload and greatly improving workability,

Third, by forming the gripping grooves on both side surfaces of the lower mold, the upper mold can be easily gripped by the user in order to separate the upper mold seated on the upper surface of the lower mold upward,

Fourthly, by forming a plurality of fixing protrusions protruding upward from the upper surface of the lower mold, the lower mold and the upper mold are firmly coupled to each other by the protrusion insertion hole into which the fixing protrusion is inserted into the upper mold, It is possible to prevent the upper mold from being damaged by the horizontal movement of the upper mold,

Fifthly, by forming a plurality of coil winding wire protrusions projecting upward on the upper mold, a lead-in direction and a lead-out direction of the lead wire to the lead wire of the coil wire are derived in the same manner, So that the productivity can be improved.

1 is a side sectional view showing the structure of a conventional micro-type inductor,
2 is an exploded perspective view showing a mold for winding an inductor coil for an inductor according to the present invention,
FIG. 3 is a sectional view showing a mold for winding an inductor coil according to the present invention,
FIG. 4 is a perspective view showing an air-core coil wound by a metal mold for winding an inductor coil according to the present invention,
5 is a plan view showing an embodiment of a mold for winding an inductor coil according to the present invention,
6 is a flowchart showing a method of winding an air core coil using a metal mold for winding an air core coil according to the present invention,
FIG. 7 is a flowchart showing a method of winding an air core coil in the flowchart shown in FIG. 6,
8 is a flowchart showing a method of manufacturing a molded inductor after winding an air-core coil according to the present invention,
FIG. 9 is a flowchart showing a coil winding method in a method of winding an air-core coil according to the present invention.

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

The mold for winding the inductor coil according to the present invention is a metal mold (1) for winding an inductor core (HC) which is made up of a coil wire (C) without a core and which induces a voltage in proportion to the amount of current change As shown in FIGS. 2 to 4, the lower mold 10 in the form of a plate is provided at a lower portion thereof; A plate-shaped upper mold 20 which is seated on the upper portion of the lower mold 10; And a plate-shaped terminal plate 30 which is seated on the upper mold 20 and has a plurality of terminals T joined to the lead line C1 and the lead line C2 of the coil line C.

The lower mold 10 has a plurality of cylindrical mold cores 11 which are upright in the upper direction and which are the central axes of the coils HC when the coil wire C is wound, 10 are provided on both sides of the lower mold 10 with a grip groove 12 in the shape of a concave groove to facilitate the user's grip when the upper mold 20 is segregated to the upper side.

A plurality of core through holes 21 are formed in the upper mold 20 so that the mold core 11 penetrates through the upper mold 20.

The mold core 11 is formed at a lower portion of the mold core 11 so as to be smaller than the diameter of the core penetrating seat portion (not shown) inserted into the core through hole 21 and the core penetrating seat portion (not shown) Is formed so as to be stepped by a winding part (not shown) to be wound.

The mold core 11 and the core through hole 21 are formed in a plurality of rows and columns so that a plurality of air core coils HC can be wound in one metal mold when the air core coil HC is wound desirable.

A plurality of fixing protrusions 13 protruding upward are formed on the upper surface of the lower mold 10; The upper mold 20 is formed with a protrusion insertion hole 22 into which the fixing protrusion 13 is inserted to prevent the upper mold 20, which is seated on the lower mold 10, from shaking in a horizontal direction.

The fixing protrusions 13 are formed in a rectangular shape in the horizontal or vertical direction of the lower mold 10 so that the lower mold 10 and the upper mold 20 can be firmly coupled to each other .

The upper metal mold 20 is formed with a plate seating part 23 protruding upward from the outer side of the core through hole 21 so as to be easily separated after the terminal plate 30 is mounted .

In this case, it is preferable that a stepped portion (not shown) is formed on the upper surface of the plate seating portion 23 so as to be inclined so as to be wound upwards when the coil wire C is first wound.

In the meantime, it is preferable that the terminal plate 30 is drilled to allow the coiled core HC to be wound therein, and the terminal T is connected to both sides of the ladle.

A plurality of plate fixing protrusions 24 are formed on one surface of the upper mold 20 so as to prevent the terminal plate 30 from moving horizontally after the terminal plate 30 is mounted thereon. On one side of the terminal plate 30, a fixing protrusion recess 31 into which the plate fixing protrusion 24 is inserted is formed.

5, when the coil wire C is wound on the mold core 11, the lead-in direction of the lead wire C1 is guided to the upper portion of the upper mold 20, A plurality of coil winding wire protrusions 25 are formed so as to protrude upward so that the drawing direction of the line C2 is induced.

The coil winding wire protrusion 25 is provided with a coil wire protrusion 25 protruding at right angles to prevent the coil wire winding protrusion 25 from falling toward the upper side of the coil wire C when guiding or pulling the coil wire C, (Not shown) is formed.

Hereinafter, the operation of the mold for winding the inductor coils according to the present invention will be described.

2, the mold for winding the inductor coils according to the present invention is divided into the lower mold 10 and the upper mold 20, and the coil line C wound on the upper mold 20 is divided into two parts, The core core 11 that performs the central axis rotation is easily erected on the upper surface of the lower mold 10 so that the core core HC without the core is easily wound .

At this time, the mold core 11 inserted in the central portion of the coil wire C wound by upwardly releasing the upper mold 20 seated on the upper portion of the lower mold 10 can be easily released Thus, the coil wire (C) can be easily formed as the coils (HC).

In order to allow the upper mold 20, which is seated on the upper surface of the lower mold 10 due to the gripping grooves 12 formed on both sides of the lower mold 10, It is convenient to grasp it.

A plurality of mold cores 11 and core through holes 21 are formed in the lower mold 10 and the upper mold 20 in the lateral and longitudinal directions to form a plurality of core coils (HC) can be wound and the production amount can be increased.

A plurality of fixing protrusions 13 projecting upward from the upper surface of the lower mold 10 and a protrusion insertion hole 22 through which the fixing protrusion 13 is inserted into the upper mold 20, The upper mold 20 seated on the upper surface of the mold 10 can be firmly coupled and the mold core 11 formed on the lower mold 10 can be damaged by the horizontal movement of the upper mold 20. [ It can be prevented in advance.

3, after the terminal plate 30 is seated by the plate seating part 23 protruding from the upper mold 20, the upper mold 20 and the terminal plate 30 It is possible to easily separate the air core coil HC from which the winding work has been completed and the terminal plate 30 to which the air core coil HC is fused.

3, a coil line C, which is initially wound due to a step (not shown) in which a slope is formed on the upper surface of the plate seating part 23, is wound upwards along the slant surface And if the winding operation naturally has an angle thereafter, it can be wound upwards.

 The terminal plate 30 mounted on the upper mold 20 can be prevented from moving in the horizontal direction due to the plate fixing projections 24 formed in the upper mold 20.

5, when the coil line C is wound on the mold core 11, the coil spiral protrusion 25 protrudes upward from the upper mold 20, The leading direction of the leading line C to the leading line C1 is constantly guided and the leading direction of the leading line C2 is constantly guided to form a plurality of coils Can be wound in a constant shape.

A method of winding an air core (HC) using a metal mold (1) for winding an air core coil (HC) according to the present invention constructed as described above is as follows.

An air core coil (HC) winding method using a metal mold 1 for winding an air core coil (HC) according to the present invention is characterized in that an upper mold 20 is wound on an upper portion of a lower mold 10 (S10) preparing the mold core (11) so as to protrude from the upper surface of the upper mold (20); (S20) of placing the terminal plate (30) on the upper surface of the upper mold (20); A coil winding step (S30) of winding the coil wire (C) on the mold core (11) protruded to the upper portion of the upper mold (20); A terminal welding step S40 for thermally fusing the terminal T provided on the terminal plate 30 to the lead line C1 and the lead line C2 of the coil wire C wound around the mold core 11, ; A lower mold releasing step (S50) for lifting the upper mold (20) vertically from the lower mold (10) and releasing the mold core (11) from the coiled line (C) wound; And a terminal plate removing step (S60) for removing the terminal plate (30) fused to the coil wire (C) wound on the upper mold (20).

At this time, a plurality of air core coils (HC) can be fabricated into one mold by the mold core 11 having a plurality of vertically and horizontally arranged lower molds 10.

Here, as shown in FIG. 8, after the terminal plate removing step S60, an air-core coil separating step of separating a plurality of air-core coils HC fused to the terminal plate 30 together with the terminals T, (S70); And an air-core coil molding step (S80) for molding the air-core coil (HC) so that the terminal (T) protrudes to the outside after the air-core coil separation step (S70).

In the meantime, the air-core coil molding step 80 is provided with a mold metal mold (not shown) having a groove formed in the shape of the mold inductor, and the terminal T is fused It is preferable that the core is formed by insert injection or press work after the inserted core HC is drawn.

Here, it is preferable that the material of the mold is formed of a magnetic ferrite material.

9, the coil winding step S30 is a coil line winding step of winding the coil wire C on the first coil winding wire projection 25 and then moving it to the mold core 11 S31); A first winding step (S32) of winding the coil wire (C) from the lower side to the upper side of the mold core (11); A second winding step (S33) of winding the coil wire (C) from the upper side to the lower side of the mold core (11); And a coil wire drawing step (S34) of winding the coil wire (C) on the second coil winding wire projection (25) and then moving it to the next mold core (11).

Meanwhile, the coil winding step S30 may be further followed by the third winding step and the fourth winding step after the first winding step S32 and the second winding step S33, Step is preferably performed so that the height of the lead line of the coil line C becomes equal to the height of the lead line.

The operation of the air core coil (HC) winding method using the metal mold 1 for winding the air core coil HC according to the present invention is as follows.

An air core coil (HC) winding method using a metal mold 1 for winding an air core coil (HC) according to the present invention is characterized in that an upper mold 20 is wound on an upper portion of a lower mold 10 Since the core is not present due to the coil winding step S30 for winding the coil wire C onto the mold core 11 protruding to the upper portion of the upper mold 20 after the mold preparing step S10 to be placed It is possible to easily wind the air core coil HC.

At this time, the lower mold 10 having the mold core 11 is removed from the upper mold 20 so that the air core coil HC wound on the plurality of mold cores 11 is separated from the upper mold 20, The plurality of air core coils (HC) can be separated from the mold 1 in a single process.

Therefore, a plurality of air core coils (HC) are separated from the mold 1 by a single process due to the lower mold releasing step S50 after winding the plurality of air core coils (HC) in the coil winding step S30 , And the production amount of the air core coil (HC) can be greatly improved.

8, after the air core coil HC is wound, an air core coil separation (not shown) for separating a plurality of air core coils (HC) welded to the terminal plate 30 together with the terminals T The mold inductor having the air core coil HC is completed by molding the outer portion of the separated air core coil HC with the molding material of ferrite material in step S70.

9, the coil line C is moved from the lower side of the mold core 11 to the upper side of the mold core 11 after the inflow step S31, which is a coil line for moving the coil line C to the mold core 11, And a second winding step S33 for winding the coil wire C from the upper side to the lower side of the mold core 11 so as to be wound on the mold core 11 The lead line C1 and the lead line C2 of the coiled HC are formed to be the same height so that they can easily contact the terminal T formed on the terminal plate 30. [

As a result, the lead line C1 and the lead line C2 are placed in line with the terminal T, so that the air core coil HC and the terminal T can be easily fused.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

Description of the Related Art
1: mold 10: lower mold
11: mold core 12: gripping groove
13: Fixed protrusion 20: Upper mold
21: core through hole 22: protrusion insertion hole
23: Plate seating part 24: Plate fixing projection
25: coil winding wire projection 30: terminal plate
31: Fixed protrusion required HC: Coil coil
C: coil wire C1: lead wire
C2: Lead wire T: Terminal
S10: Mold preparing step S20: Terminal plate seating step
S30: coil winding step S31: coil winding step
S32: First winding step S33: Second winding step
S34: Extraction of coil line S40: Terminal fusion step
S50: Lower mold release step S60: Terminal plate release step
S70: Separation of the air core coil S80: Step of air core coil molding

Claims (9)

1. A mold (1) for winding an inductor air core coil (HC) made of a coil wire (C) without a core to induce a voltage in proportion to a change amount of current,
A lower mold 10 of a plate shape provided at a lower portion thereof;
A plate-shaped upper mold 20 which is seated on the upper portion of the lower mold 10;
And a plate-like terminal plate 30 which is seated on the upper mold 20 and has a plurality of terminals T connected to the lead line C1 and the lead line C2 of the coil line C;
The lower mold 10 has a plurality of cylindrical mold cores 11 which are upright in the upper direction and are formed as central axes of the coils HC when the coil lines C are wound.
Wherein a plurality of core through holes (21) are formed in the upper mold (20) so that the mold core (11) penetrates through the upper mold (20). The method according to claim 1,
A plurality of fixing protrusions 13 projecting upwardly are formed on the upper surface of the lower mold 10;
The upper mold 20 is formed with a projection 22 for receiving the fixing protrusion 13 so as to prevent the upper mold 20 mounted on the lower mold 10 from shaking in a horizontal direction A mold for winding an air core coil for an inductor. The method according to claim 1,
The upper metal mold 20 is formed with a plate seating portion 23 protruding upward from the outer side of the core through hole 21 so as to be easily separated after the terminal plate 30 is seated. A mold for winding an air core coil for an inductor. The method according to claim 1,
A plurality of plate fixing protrusions 24 protruded upward to prevent the terminal plate 30 from being horizontally moved after the terminal plate 30 is mounted on one surface of the upper mold 20;
Wherein the terminal plate (30) has a fixing protrusion void (31) on one side thereof to which the plate fixing protrusion (24) is inserted. The method according to claim 1,
When the coil wire C is wound on the mold core 11, the lead-in direction of the lead-in wire C1 is guided to the upper portion of the upper mold 20, And a plurality of coil winding wire protrusions (25) protruded upward to form the coil winding wire protrusions (25). The method according to claim 1,
A gripping groove 12 having a concave groove shape is formed on both sides of the lower mold 10 so as to facilitate gripping of the upper mold 20 when the upper mold 20 is seated on the upper portion of the lower mold 10 Wherein the coil is wound around the core. An air core coil (HC) winding method using a metal mold (1) for winding an inductor air core coil (HC) according to any one of claims 1 to 6,
A mold preparation step (S10) of seating the upper mold (20) on the upper mold (10) to protrude the mold core (11) to the upper portion of the upper mold (20);
(S20) of placing the terminal plate (30) on the upper surface of the upper mold (20);
A coil winding step (S30) of winding the coil wire (C) on the mold core (11) protruded to the upper portion of the upper mold (20);
A terminal welding step S40 for thermally fusing the terminal T provided on the terminal plate 30 to the lead line C1 and the lead line C2 of the coil wire C wound around the mold core 11, ;
A lower mold releasing step (S50) for lifting the upper mold (20) vertically from the lower mold (10) and releasing the mold core (11) from the coiled line (C) wound;
And a terminal plate releasing step (S60) for releasing the terminal plate (30) fused to the coil wire (C) wound on the upper mold (20) Winding method. 8. The method of claim 7,
(S70) for separating a plurality of coils (HC) welded to the terminal plate (30) together with the terminals (T) after the terminal plate disengaging step (S60);
And an air core coil molding step (S80) for molding the air core coil (HC) so that the terminal (T) protrudes to the outside after the air core coil separation step (S70). (Method for winding core coil). 8. The method of claim 7,
The coil winding step S30 is a coil line embedding step S31 for winding the coil wire C on the first coil winding wire projection 25 and then moving it to the mold core 11;
A first winding step (S32) of winding the coil wire (C) from the lower side to the upper side of the mold core (11);
A second winding step (S33) of winding the coil wire (C) from the upper side to the lower side of the mold core (11);
And a coil wire drawing step (S34) for winding the coil wire (C) on the second coil winding wire projection (25) and then moving it to the next mold core (11). (Method for winding core coil).

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