JPH0756848B2 - Iron core manufacturing method consisting of magnetic wire of noise cut transformer - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise cut transformer for blocking a disturbing wave (hereinafter referred to as noise) transmitted through a power supply line, and more particularly to a method for manufacturing an iron core made of a magnetic wire.

2. Description of the Related Art In recent years, the spread of computer use, especially the quantitative increase in use by microcomputers, is remarkable.
It covers information, industry, consumer life and all other fields. Further, with the development of integrated circuits, digitization and miniaturization of electronic devices and control devices have become extremely remarkable.
However, since integrated circuits operate with extremely weak electric energy, there is a problem that malfunctions and destruction are likely to occur due to noise entering from the outside, and effective noise prevention measures are indispensable for computerization and digitization. is there.

Therefore, the present inventor first made the axial directions of the secondary winding and the central iron core axis orthogonal to the axial direction of the primary winding and the central iron core axis, and set the surroundings of both windings. To develop a noise-cut transformer, which is covered with a conductive wave and a ferrite plate respectively, first of all, in order to make the axial directions of the iron core axes at the center of the primary and secondary windings orthogonal, The filaments are bundled to form a square shape, and one set of parallel one core material parts (corresponding to one core shaft) is opposed to the other core material part (corresponding to the other core shaft). )) Is rotated 90 degrees and twisted, and the utility model is registered.
No. 1466299 (Jitsuko 57-18748) was obtained.

Problems to be Solved by the Invention Certainly, when an iron core material is formed by converging extremely thin filaments,
Normally, it becomes easy to perform work forming by rotating one core shaft by 90 ° with respect to the other core shaft. However, since the ultrafine wire is adopted, the size of the iron core is limited, and only a transformer with a small capacity can be manufactured. 1
The noise pulse leaked from the primary winding is 2 when the two axes of the iron core shafts in the centers of the secondary and secondary windings are orthogonal to each other.
Since it is extremely difficult to connect it to the secondary winding, it has the best structure as the iron core of the noise cut transformer. Therefore, it is desired to manufacture iron cores of various sizes having such a structure accurately and efficiently.

The present invention has been made by paying attention to such conventional problems, and even if magnetic wire rods having various thicknesses are adopted,
Manufacture of a magnetic wire rod of a noise cut transformer capable of accurately and efficiently manufacturing iron cores of various sizes by orthogonally intersecting both axial directions of iron core shafts respectively arranged at the centers of the primary and secondary windings. The purpose is to provide the law.

Means for Solving the Problems Means for achieving the above object will be described below with reference to FIGS. 1, 2, 4, and 6 corresponding to the embodiments.

In the iron core manufacturing method of the magnetic wire rod of this noise cut transformer, the magnetic wire rod is wound around the outer peripheral surface 12 of the winding frame 10 a number of times to be stacked, and the binding 36 is hung at each of a plurality of appropriate positions to form a ring-shaped magnetic wire bundle. After forming the core material 38 of the core material 38, the core material 38 is removed from the bobbin 10, and the parts 40 which become the central axes of the primary and secondary windings of the core material 38,
42 are fixed by the clamps 22, the clamps 22 are held, and the core material 38 is twisted to form each central axis.
After the two axes of 40 and 42 are made orthogonal to each other with a required distance, the holding tool 22 is removed from the iron core material.

Action The winding frame 10 has a shape and size of the outer peripheral surface 12, a position where the bind 36 is arranged in the vicinity of the outer peripheral surface 12, a type of the bind 36, and the like, and the shape and size of the iron core material 38 made of a magnetic wire bundle. It can be formed into the initial ring shape and size. The iron core material 38 has the binds 36 hung at a plurality of required positions, so that it does not lose its shape when it is removed from the reel 10. Next, when the iron core material 38 is held by the sandwiching tool 22 and twisted, the twisting force of the core material 38 held by the sandwiching tool 22 becomes the central axis 40 of each of the primary and secondary windings of the core material 38. , 42 is not deformed, but is transmitted to the other two parts 44, 46 of the iron core material 38 connecting them, and deforms only there. Therefore, the two portions 44 and 46, which are the deformed portions of the iron core material 38, are immediately bent, and the portions 40 and 42, which are the respective central axes, are orthogonal to each other. Therefore, the clamp 22 is made of the iron core material 38.
When removed from the core, the iron core material 38 composed of the magnetic wire rod bundle formed into the final ring shape and size can be manufactured.

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

FIG. 1 is a view showing an example of a magnetic wire rod winding frame used for carrying out an iron core manufacturing method of a magnetic wire rod of a noise cut transformer according to the present invention, in which (a) is a front view and (b) is a right view. The plan view and the (c) view are enlarged views taken along the line XX.
In the figure, 10 is a disk-shaped magnetic wire winding frame having a front-rear, left-right and up-down symmetrical structure, and 12 is an outer peripheral surface thereof. The outer peripheral surface 12 has a cross-sectional shape and a depth corresponding to the size of the iron core material to be manufactured, and a ring groove having a length corresponding to the initial ring shape and the size, for example, a depth of a semicircular cross section. , A winding groove 14 having two parallel straight portions and two semicircular portions connecting the straight linear portions and arranged in an o shape. The shape, size, etc. of the winding groove can be changed as appropriate, such as making the cross-sectional shape and the ring shape rectangular. When the magnetic wire is wound along such a winding groove an appropriate number of times and stacked, the aggregate is matched to the initial shape and size of the set core material regardless of the cross-sectional shape and thickness of the wire itself. It can be molded. or,
A binding arrangement that extends along the winding groove 14 from the outer peripheral surface 12 to the deepest portion of the winding groove 14 or a depth exceeding it, and penetrates from one surface (front surface) 15 adjacent to the outer peripheral surface 12 and facing the other surface (back surface) 17 to each other. The recesses 16 are arranged at a plurality of places. In the figure, 14 slits are provided as the binding placement concave portions 16 that have reached a depth slightly exceeding the deepest portion, and two parallel straight line portions are provided at both ends thereof, respectively, and the two semicircular portions are arranged at equal intervals. It shows what has been set up. The depth, width, etc. of the binding placement recess can be appropriately changed according to the shape and thickness of the binding to be used. If the bind is arranged inside such a bind arrangement recess 16 before the winding of the wire is started,
After finishing the winding, the required portions of the wire rod laminated body can be bound together by binding them appropriately. Further, a separating line 18 is provided at least at a part of the deepest part of the winding groove 14 so that the winding frame 10 can be separated into at least two parts. Because the separation line 18
It suffices that the length is sufficient to separate the winding frame 10 and take out the core material from the inside of the winding groove 14 without the edges of the winding frame 10 being in the way. In the drawing, the winding line 10 is shown in which all separation lines 18 are provided at the deepest part so that the front and rear parts can be divided into two equal parts. Such a reel 10 has a structure in which after the core material is taken out, the separated parts are united and the core material can be molded again. Therefore, the rotary shaft 20 provided at the center of the bobbin 10 is used for positioning at the time of uniting, the contact surface is provided with unevenness for positioning, and a coupling member or the like is appropriately installed.

FIG. 2 is a perspective view showing an example of a twisting and holding tool used for implementing the present invention. In the figure, reference numeral 22 is a twist holding tool composed of two rectangular parallelepipeds 24 and 26, and 28 and 30 are a pair of opposing surfaces thereof.
These facing surfaces 28 and 30 correspond to one side surface of each of the two rectangular parallelepipeds 24 and 26, and thus can be separated. Further, as opposed grooves 28, 30 for fitting and sandwiching the central axis portions of the primary or secondary windings of the iron core material, for example, upper and lower surfaces in the vertical direction at the centers of the respective surfaces 28, 30 respectively. Holding groove 32, 34 with semicircular cross section
To provide. The shape, size, etc. of the holding groove may be appropriately changed depending on the shape, size, etc. of the iron core material fitted therein.
When twisting the iron core material using such a holding tool 22,
Naturally, the rectangular parallelepipeds 24 and 26 are pressed from both outer surfaces, and the inner facing surfaces are pressed.
Abut grooves 28, 30 or as close as possible to grooves 32, 34
Sandwich the iron core material with.

A method of manufacturing an iron core made of a magnetic wire rod of a noise cut transformer by using the magnetic wire rod reel 10 and the twist clamp 22 will be described below. First, as a magnetic wire, a wire obtained by slitting a silicon steel plate by slit processing, an enamel coated wire of soft iron, an amorphous magnetic alloy wire, and the like are prepared. If this silicon steel wire has a rectangular cross-section or the like, it can be easily wound around the bobbin 10,
The resistance increases when twisted by the clamp 22. The silicon steel wire has an insulating oxide film on two surfaces. The soft iron enamel coating line is reversed because it covers the entire area with the enamel coating. Further, even if the crystal structure of the silicon steel wire is destroyed during processing, the magnetic properties are restored by annealing after forming. Furthermore, regarding the amorphous magnetic alloy wire, in addition to being able to select the cross-sectional shape, unlike crystalline metals, the atomic arrangement structure is amorphous, so even if processing such as bending or twisting,
The magnetic properties are undiminished and convenient.

Therefore, such a magnetic wire is first placed on the bottom of the binding installation recess 16 of the winding frame 10 and then wound around the winding groove 14 and sequentially stacked according to its shape. At this time, in the case where the winding groove 14 has a semicircular cross section, as the first step, the winding number is increased from the lower layer to the upper layer while increasing the number of windings for each layer, and the number of windings is stored. After the groove 14 is filled, the second layer is wound on the layer 14 while the number of windings is reduced for each layer to match the number of layers in the first layer. Then, as shown in FIG. 3, an iron core material 38 having a circular cross section can be formed on the outer peripheral surface 12 of the bobbin 10 such that a binding body 36, for example, a binding wire 36 is arranged below the magnetic wire material. In the case of stacking the magnetic wire rods as the second step, if the cross-sectional shape of the wire rods is selected to be a square shape or the like, they will be easily stacked and will not collapse without a frame. However, the reel 10 as it is
When the iron core material 38 is removed from the mold, it loses its shape, so the binds 16 are first tied together. In this way, the magnetic wire material is wound around the outer peripheral surface 12 of the winding frame 10 a number of times to be stacked, and the iron core material 38 composed of the magnetic wire material bundle in which the binds 16 are hung at a plurality of appropriate positions thereof has an initial ring shape and size. Accurately and efficiently mold. If the ring shape is a square shape, it will be easier to wind. After that, when the winding frame 10 is separated and the iron core material 38 is taken out, a product in which predetermined portions are bound with a bind 36 as shown in FIG. 4 is obtained. Therefore,
The parallel straight portions 40 and 42 of the iron core material 38 are primary and secondary, respectively.
Since it corresponds to each central axis of the next winding, the four bindings 36 at both ends thereof are removed to prepare for the next twisting step. Alternatively, the other binds 36 can be replaced with other binds such as spiral springs as appropriate. This is because if the wire is tightly bound with a bind wire or the like, the wiring portion is likely to be constricted when twisted.

Next, as shown in FIG. 5, two twist clamps 22 are used, and the opposing surfaces 28, 30 are separated from each other, and the iron core material is placed in the clamp grooves 32, 34 of one clamp 22. Fitting the part 40 which becomes the central axis of the primary winding of 38, the holding groove of the other holding tool 22
After fitting the part 42 which becomes the central axis of the secondary winding in 32, 34,
The sandwiching tools 22 are pressed from both outsides so that the facing surfaces 28 and 30 are brought into contact with each other or as close as possible. Therefore, when the other holding tool 22 is twisted and rotated 90 ° with respect to the one holding tool 22, both axis lines of the central axes 40 and 42 are made orthogonal to each other by a required distance as shown in FIG. be able to. At that time, the twisting force is transmitted to the other two parts 44 and 46 of the iron core material connecting them without deforming the parts 40 and 42 which are the central axes held by the respective holding tools 22 respectively. , Deform only there. If the two portions 44, 46 connecting the parallel straight portions 40, 42 of the iron core material 38 are formed in an arc shape such as a semicircle, since there are no folds, the wire rods are easily slipped and twisted when twisted. As a result, the two portions 44 and 46, which are the deformed portions of the iron core material 38, are immediately bent, and the portions 40 and 42, which are the respective central axes, are accurately and efficiently orthogonal to each other. Incidentally, the dimensions such as the thicknesses of the rectangular parallelepipeds 24 and 26 constituting the holding tool 22 are taken into consideration the dimensions of each bobbin around which the primary or secondary winding is wound, and a required distance is secured between the two orthogonal portions 40 and 42. . Therefore,
When such a holding tool 22 is removed from the iron core material 38, the iron core material 38 composed of a magnetic wire rod bundle accurately and efficiently formed into the final ring shape and size can be manufactured.

Next, the iron core material 38 is impregnated with an insulating synthetic resin such as epoxy resin and hardened to complete an endless iron core 48 as shown in FIG. Therefore, as shown in FIG. 8, round bobbins 50 and 52, which are bisected in the axial direction, are used to fit orthogonal portions of the iron core 48 from both sides, and then the bobbins 50 and 52 are turned to wind the electric wire. , The primary and secondary windings 54 at the required positions,
Install 56 each. It should be noted that the iron core, that is, the iron core material having a round cross-section has a round bobbin, which makes it easier to wind the electric wire. Finally, these primary and 2
A noise transformer is completed by appropriately selecting and applying an electrostatic shield, an electromagnetic shield, a magnetic shield, or the like around and between the next windings 54 and 56.

EFFECTS OF THE INVENTION According to the present invention described above, since the magnetic wire rod winding frame is used, the iron core material composed of the magnetic wire rod bundle can be accurately and efficiently formed into its initial ring shape and size.
Also, since a twist clamp is used, the central axis of the iron core material is not deformed, only the other areas that are deformed are immediately bent, and the central axes are accurately and efficiently orthogonalized. Can be made. Therefore, even if magnetic wire rods having various thicknesses are adopted, the core axes of the cores at the center of the primary and secondary windings are made orthogonal to each other, and cores of various sizes are accurately Can be manufactured efficiently. Therefore, it is possible to manufacture a noise cut transformer having various capacities and good noise blocking characteristics, even for large capacities.

[Brief description of drawings]

FIG. 1 is a view showing an example of a magnetic wire rod winding frame used for carrying out an iron core manufacturing method of a magnetic wire rod of a noise cut transformer according to the present invention, in which (a) is a front view and (b) is a right view. The plan view and the (c) view are enlarged views taken along the line XX. FIG. 2 is a perspective view showing an example of a twist pinching tool used for carrying out the same iron core manufacturing method. FIG. 3, FIG. 4, FIG. 5 and FIG. 6 are views showing the manufacturing process of the iron core. FIG. 7 is a perspective view showing a completed state of the iron core, and FIG. 8 is a perspective view showing a state in which primary and secondary windings are installed therein. 10 ... Magnetic wire rod reel, 12 ... Outer peripheral surface, 14 ... Winding groove, 16 ...
… Bind installation recess, 18 …… Separation line, 22 …… Twist clamp, 28, 30 …… Opposing surface, 32, 34 …… Clamp groove, 36 …… Bind, 38 …… Iron core material, 40, 42 …… Central core parts of primary and secondary windings of iron core material, 54, 56 ... Primary and secondary
Next winding

Claims (1)

[Claims] 1. A magnetic wire rod is wound around an outer peripheral surface of a winding frame a number of times to be piled up, and the plurality of magnetic wire rods are respectively bound at appropriate positions to form a ring-shaped iron core material consisting of a bundle of magnetic wire rods.
Remove the iron core material from the bobbin, fix the central shaft parts of the primary and secondary windings of the iron core material with clamps, hold the clamps, and twist the core material. A method for manufacturing an iron core made of a magnetic wire rod of a noise cut transformer, characterized in that both axial lines of each central shaft portion are orthogonal to each other by a predetermined distance and the holding tool is removed from the iron core material.