JPH02224309A - Manufacture of iron core made of magnetic wire material of noise-cut transformer, magnetic wire material spool and twisted pinching tool - Google Patents

Abstract

PURPOSE:To make it possible to manufacture various sizes of iron cores accurately and efficiently by a method wherein both axial directions of core axis, to be arranged in the center of primary and secondary windings are crossed at right angle with each other. CONSTITUTION:A magnetic wire material is lap-wound in a plurality of turns on the outer circumferential surface of a spool 10, a bind wire 36 is tied at several suitable points on the spool 10, and after a ring-shaped core material 38 consisting of a magnetic wire material bunch has been formed, the core material 38 is removed from the spool 10. Then, the parts 40 and 42, which become the center part of the primary and the secondary windings of the core material 38 are fixed using pinching tools 22 and 22 respectively, a twist is given to the core material 38 maintaining the pinching tools 22 and 22, and after both axes of the part 40 and 42, which become each center axis, have been separated in the prescribed distance and they have been crossed at right angle, the pinching tools 22 and 22 are removed from the core material. As a result, even when magnetic wire materials of various thickness are used, cores of various sizes can be manufactured accurately and efficiently by orthogonally intersecting both axial directions of the core axis which become the center of the primary and the secondary windings.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a noise cut transformer that blocks disturbance waves (hereinafter referred to as noise) transmitted through a power supply line, and particularly to a method for manufacturing an iron core thereof made of magnetic wire.

Background of the Invention In recent years, the use of computers has become more widespread, and in particular the use of microcomputers has increased rapidly.
It extends to information, industry, civilian life, and all other fields. Furthermore, with the development of integrated circuits, the digitization and miniaturization of electronic devices and control devices have become extremely significant. However, since integrated circuits operate using extremely weak electrical energy, they are susceptible to malfunction or destruction due to noise entering from the outside, and effective noise prevention measures are essential for computerization and digitalization. be.

Therefore, the inventor first made the axial direction of the secondary winding and its central iron core axis orthogonal to the axial direction of the primary winding and its central iron core axis, and We developed a noise-cutting transformer that was covered with a conductive plate and a ferrite plate, and in order to orthogonal the directions of the two axes of each core shaft in the center of the primary and secondary windings, we first made the core material extremely thin. The wires are bundled to form a rectangular shape, and one parallel core material part of the set (corresponding to one core axis) is connected to the other core material part (corresponding to the other core axis). The patent discloses that the device is rotated by 90° and twisted, and obtained Utility Model Registration No. 1466299 (publication of Utility Model Publication No. 18748/1983).

Problems to be Solved by the Invention It is true that when the iron core material is formed by converging extremely thin wires,
Normally, processing and forming is facilitated by rotating one core shaft by 90 degrees with respect to the other core shaft.

However, since ultra-thin wires are used, there is a limit to the size of the core, and it is only possible to manufacture transformers with small capacities. In addition, if the directions of the two axes of the iron core shafts at the centers of the primary and secondary windings are perpendicular to each other, it is extremely difficult for noise pulses leaking from the primary winding to couple to the secondary winding. Therefore, it is the best structure for the iron core of a noise cut transformer. Therefore, it is desired to accurately and efficiently manufacture iron cores of various sizes having such a structure.

The present invention was made by focusing on such conventional problems, and even if magnetic wires having various thicknesses are used,
Manufacture of cores made of magnetic wire for noise-cut transformers that can accurately and efficiently manufacture cores of various sizes by orthogonalizing the directions of the two axes of the core axes placed at the center of each of the primary and secondary windings. The object of the present invention is to provide a magnetic wire winding frame and a twist clamping device.

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

The method for manufacturing the iron core made of magnetic wire for this noise cut transformer is to wrap the magnetic wire many times around the outer circumferential surface 12 of the winding frame 10, stack it, and then apply binds 36 at multiple locations as appropriate to make the magnetic wire bundle. Ring-shaped iron core material 3
8, the core material 38 is removed from the winding frame 10, and the portions 40 and 42 of the core material 38 that become the central axes of the primary and secondary windings are respectively fixed with the clamping tools 22,
The clamping tools 22 are held and the core material 38 is twisted so that the axes of the central axis portions 40 and 42 are separated by a required distance and are orthogonal, and then the clamping tools 22 are removed from the core material. It goes through a process.

The magnetic wire winding frame 10 used directly in carrying out the above manufacturing method has a depth corresponding to the cross-sectional shape and size of the iron core material 38 on its outer peripheral surface 12, and a length corresponding to the initial ring shape and size. A part 1 that extends along the winding groove 14 from the outer circumferential surface 12 to the deepest part of the winding groove 14 or a depth exceeding it, and that is adjacent to and corresponds to the outer circumferential surface 12.
A binding installation recess 16 penetrating from the winding groove 14 to the narrow surface 17 is provided at a plurality of locations, and a separation line 18 is provided in at least 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. It is.

In addition, the twist clamping tool 22 is provided with grooves 32, 34 on its pair of opposing surfaces 28, 30, into which the portions 40, 42, which are the central axes of the primary or secondary windings of the core material 38, are fitted and clamped. This allows the opposing surfaces 28 and 30 to be separated.

Shape, size, and outer circumferential surface 12 of the working winding frame 10 and its outer circumferential surface 12
By appropriately selecting the position of the bind 36 in the vicinity of the bind 36, the type of the bind 36, etc., the shape and size of the core material 38 made of the magnetic wire bundle can be determined and formed into the initial ring shape and size. Since this iron core material 38 has binds 36 attached to each of a plurality of required locations, it does not lose its shape when removed from the winding frame 10. Next, when the iron core material 38 is held by the clamping tools 22 and twisted, the twisting force is applied to the portion 40, which is the central axis of each of the primary and secondary windings, of the iron core material 38 held by the clamping tools 22. .42 is not deformed, and the other two of the iron core material 38 that connects them are
It is transmitted to each portion 44 and 46, and deforms only that portion. For this reason, the two parts 4, which are the deformed parts of the core material 38,
4.46 is a portion 40 that is bent straight and becomes each central axis.
．． 42 are orthogonal. Therefore, the clamping tool 22 is attached to the core material 38.
When removed, an iron core material 38 consisting of a magnetic wire bundle formed into the final ring shape and size can be manufactured.

When the magnetic wire winding frame 10 used in such a manufacturing method is wound with the wire an appropriate number of times along the winding groove 14 and stacked, the laminate is formed into a set shape regardless of the cross-sectional shape and size of the wire itself. Can be molded to match the shape and serrations of the core material. In addition, before starting winding of the wire, each recess 1
If a bind 36 is placed inside each of the iron core materials 38, the required parts of the iron core material 38 can be placed in the bind 36 after the winding is completed.
It can be tied tightly and tied. Therefore, the winding frame 10 is
When separated at the deepest part, the edge of the reel 10 does not get in the way.
The core material 38 can be removed from the winding frame 10. Such a winding frame 10 can be used again if it is assembled after being removed.

Furthermore, when two clamping tools 22 are used as the twist clamping tool 22, the opposing surfaces 2B and 30 are separated from each other, and the primary winding is placed inside the clamping grooves 32 and 34 of one of the clamping tools 22. After fitting a portion 40 of the core material 38 that will become the central axis of the secondary winding into the clamping grooves 32 and 34 of the other clamping tool 22, Twist the other clamping tool 22 against the clamping tool 22 and
When rotated by 0°, both axes of the central axis portions 40 and 42 can be separated by a required distance and orthogonal to each other.

Example Hereinafter, the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a diagram showing a magnetic wire winding frame according to an embodiment of the present invention, in which (a) is a front view, (b) is a side view of the stone,
and (C) is an enlarged cross-sectional view taken along line X-X. In the figure, 10
12 is a disk-shaped magnetic wire winding frame having a longitudinally, horizontally, and vertically symmetrical structure, and 12 is its outer peripheral surface. This outer peripheral surface 12 has a depth corresponding to the cross-sectional shape and size of the core material to be manufactured.
As a winding groove with a length matching the initial ring shape and size, for example, the winding groove has a semicircular cross section and a depth, and is arranged in a zero shape consisting of two parallel straight parts and two semi-interior parts connecting them. A groove 14 is formed. Note that the shape, size, etc. of the winding groove can be changed as appropriate, such as by making its cross-sectional shape and ring shape square. When magnetic wire is wound an appropriate number of times along such winding grooves and stacked, the laminate will match the initial shape and size of the core material, regardless of the cross-sectional shape and thickness of the wire itself. Can be molded. In addition, it reaches from the outer peripheral surface 12 along the winding groove 14 to the deepest part of the winding groove 14 or a depth exceeding it, and penetrates from one surface (front) 5 adjacent to and facing the outer peripheral surface 12 to the other surface (rear surface) 17. Bind placement recesses 16 are provided at a plurality of locations. In the figure, 14 slits are provided as the binding arrangement four parts 16 that reach a depth slightly exceeding the deepest part, and are provided at both ends of the two parallel straight parts, and equally spaced inside the two halves. It shows what was done. Note that the depth, width, etc. of the bind placement recess can be changed as appropriate depending on the shape and thickness of the bind used. If a bind is placed inside such a bind installation recess 16 before starting the winding of the wire rod, after the winding is finished, the wire and moon laminate can be tied up at the required locations with the binder as appropriate. . Further, a separation line 18 is provided at least in 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. This is because the separation line 18 only needs to have a length necessary to separate the winding frame 10 and take out the core material from inside the winding groove 14 without the edge of the winding frame 10 getting in the way. In the figure, a separating line 18 is provided at the deepest part so that the winding frame 10 can be divided into two parts, front and rear.

Such a winding frame 10 has a structure in which after the core material is taken out, the separated parts are combined to form the core material again. For this reason, the rotating shaft 20 provided at the center of the winding frame 10 is used for positioning when the winding frame 10 is assembled, unevenness for positioning is provided on the contact surface, and connecting members and the like are installed as appropriate.

FIG. 2 is a perspective view showing a twist clamp according to an embodiment of the present invention. In the figure, reference numeral 22 indicates a twist gripping tool consisting of two rectangular parallelepipeds 24 and 26, and reference numerals 28 and 30 indicate a pair of opposing surfaces thereof. These opposing surfaces 28.30 are two rectangular parallelepipeds 24.2
It corresponds to each side of 6, so it can be separated. In addition, the opposing surfaces 28.30 are provided with grooves for fitting and holding portions of the primary or secondary windings of the core material, such as upper and lower surfaces in the vertical direction, for example, at the center of each surface 28.30. A clamp with a semicircular cross section @32.34 is provided. Note that the shape, size, etc. of the clamping groove are changed as appropriate depending on the shape, size, etc. of the core material to be fitted therein. When twisting the core material using such a clamping tool 22, the rectangular parallelepiped 24.26 is naturally pressurized from both outer surfaces, and the inner facing surfaces 28.30 are brought into contact with each other.
Alternatively, the core material is sandwiched between the grooves 32 and 34 as close as possible.

These magnetic wire winding frames 10. A method of manufacturing an iron core made of magnetic wire for a noise cut transformer using the twist clamping tool 22 will be described below. First, as a magnetic wire,
A wire made by cutting a silicon steel plate into pieces by slitting, a soft iron enamel coated wire, an amorphous magnetic alloy wire, etc. are prepared. If the silicon steel wire has a rectangular cross section, it will be easier to wind around the winding frame 10, but the resistance will increase when it is twisted by the clamping tool 22. Note that the silicon steel wire has an insulating oxide film on two sides. In the case of soft iron enamel coated wire, the situation is reversed because the entire circumference is covered with enamel coat. In addition, even if the crystal structure of silicon steel wire collapses once during processing, its magnetic properties can be recovered by annealing after forming1.Furthermore, with respect to A: SHRUFF7S magnetic alloy wire, the cross-sectional shape can be selected, and Unlike crystalline metals, the atomic arrangement structure is amorphous, so even when processed by bending or twisting, the magnetic properties do not deteriorate, which is advantageous.

Therefore, such magnetic wires are first placed at the bottoms of the bind installation recesses 16 of the winding frame 10, and then wound inside the winding grooves 14 and stacked one after another according to the shape. At this time, if the winding groove 14 has a semicircular cross section, the winding is performed by increasing the number of turns for each layer from the lower layer to the upper layer until the groove 14 is filled in the '1st step, and the number of turns is memorized. After filling the groove 14, the second stage is performed by winding each layer by reducing the number of turns, and then matching the layers of the first stage. Then, as shown in Figure 3, the winding frame 1
Bind downward to the outer peripheral surface 12 of 0, for example, the binding line 36
It is possible to form an iron core material 38 having a circular cross section and consisting of a laminate of magnetic wires arranged with . In addition, when piling up the magnetic wires in the second step, if the cross-sectional shape of the wires is selected to be rectangular or the like, it will be easier to stack them and they will not collapse even without a frame.

However, if the core material 38 is removed from the winding frame 10 as it is, it will lose its shape, so first bind each part with the binder 16. In this way, the core material 38, which is made of a magnetic wire bundle in which the magnetic wire is wound and stacked many times around the outer circumferential surface 12 of the winding frame 10 and bound 16 is applied at multiple locations as appropriate, is adjusted to its initial ring shape and size. Form accurately and efficiently. Note that it is easier to wind up the ring if it is rectangular.

Thereafter, when the winding frame 10 is separated and the core material 38 is taken out, a core material 38 bound at predetermined locations with binds 36 is obtained as shown in FIG. Therefore, the parallel straight portion 4 of the iron core material 38
Since numbers 0 and 42 correspond to the central axes of the primary and secondary windings, the four binds 36 at both ends are removed in preparation for the next twisting process. Alternatively, the other bind 36 can be replaced with another bind such as a spiral spring as appropriate. This is because if the wires are tied tightly using a binding wire or the like, the wiring locations tend to become constricted when the wires are twisted.

Next, as shown in FIG. 5, the two twisting clamps 22 are used to separate the opposed surfaces 28 and 30, and the iron core material is placed in the clamps @32 and 34 of one clamping fixture 22. 3
After fitting the part 40 which becomes the central axis of the primary winding No. 8 and fitting the part 42 which becomes the central axis of the secondary winding into the clamping groove 32, 34 of the other clamping tool 22, each clamping tool 22 is fitted. Pressure is applied from both outsides to bring the facing surfaces 28 and 30 into contact with each other or as close as possible. Therefore, by twisting and rotating the other clamping tool 22 by 90 degrees with respect to one clamping tool 22, the two axes of the central axis portions 40 and 42 are separated by a required distance and are orthogonal to each other, as shown in FIG. be able to. At that time, the twisting force is transmitted to the other two parts 44, 46 of the core material connecting them without deforming the central shaft parts 40, 42 held by each clamping tool 22, respectively. , only that part is transformed. Note that if the two parts 44, 46 connecting the parallel straight parts 40, 42 of the iron core material 38 are made into an arc shape such as a semicircle, there will be no creases, so it will be easy to slip between the wires when twisting, making it easier to twist. As a result, the iron core material 38
The two parts 44 and 46 that are deformed are bent straight, and the parts 40 and 42 that are each central axis intersect at right angles precisely and efficiently. Incidentally, the rectangular parallelepiped 24.2 that constitutes the clamping tool 22
The thickness and other dimensions of 6 are determined by considering the dimensions of each bobbin around which the primary or secondary winding is wound, and ensuring the required distance between the two orthogonal parts 40 and 42. Therefore, by removing such a clamping tool 22 from the iron core material 38, the iron core material 38 consisting of a magnetic wire bundle formed into the final ring shape and large serrations can be manufactured accurately and efficiently.

Next, this core material 38 is impregnated with an insulating synthetic resin such as epoxy resin and hardened to complete an endless core 48 as shown in FIG. 7. Therefore, as shown in Fig. 8, a round bobbin 50.
After fitting each bobbin 50, 52 into the orthogonal portions from both sides, each bobbin 50, 52 is turned to wind up the electric wire, and the primary and secondary windings 54, 56 are respectively installed at the required positions. Note that although it is easier to wind the wire with a bobbin when the cross-sectional shape of the iron core, that is, the iron core material is round, it is possible to wind the wire even if it is square.

Finally, an electrostatic shield, an electromagnetic shield, a magnetic shield, etc. are appropriately selected and applied around and between the primary and secondary windings 54 and 56 to complete the noise quadrence.

According to the present invention described in detail, a magnetic wire winding frame is used, a winding groove for winding the magnetic wire is provided on the outer peripheral surface of the winding frame, and a binding arrangement recess is arranged along the winding groove. Since the separation line is provided at the deepest part of the winding groove, the core material made of the magnetic wire bundle can be efficiently formed into its initial ring shape and size accurately. Also, using a twist clamp,
The gripping tool has a pair of opposing surfaces with primary or secondary iron core material.
A holding groove is provided in which the part that will become the center axis of the next winding is fitted, and the opposing surfaces can be separated, so the part that will become the center axis of the core material is not deformed, and only the other parts that will be deformed. can be bent straight to make the central axes orthogonal to each other accurately and efficiently. For this reason, even if magnetic wires with various thicknesses are used, the directions of the two axes of the core shafts, which are the centers of the primary and secondary windings, are perpendicular to each other, so that cores of various sizes can be accurately wired. Can be manufactured efficiently.

Therefore, it is possible to manufacture noise cut transformers having various capacities, including those with large capacities, and having good noise cutoff characteristics.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a magnetic wire winding frame according to an embodiment of the present invention, in which (a) is a front view, (b) is a right side view,
and (C) is an enlarged cross-sectional view taken along line X-X. FIG. 2 is a perspective view showing a twist clamp holder according to an embodiment of the present invention. FIG. 3, FIG. 4, FIG. 5, and FIG. 6 are diagrams showing the manufacturing process of an iron core made of magnetic wire of a noise cut transformer according to an embodiment of the present invention. FIG. 7 is a perspective view showing the core in its completed state, and FIG. 8 is a perspective view showing the state in which the primary and secondary windings are installed therein. 10...Magnetic wire winding frame 12...Outer peripheral surface 14...
- Winding groove 16... Bind installation recess 18... Separation line 22... Twist clamping tool 28.30... Opposing surface 32.34... Clamping groove 36... Bind 38
... Core material 40.42 ... Primary and secondary core material
A portion 54 that becomes each central axis of the next winding. 56...Primary and secondary winding diagram

Claims (3)

[Claims] (1) Magnetic wire is wound around the outer circumferential surface of the winding frame many times and stacked, and then bound at multiple locations as appropriate to form a ring-shaped core material made of a bundle of magnetic wires, and the core material is removed from the winding frame. , the primary and secondary core materials
Fix the parts that will become the central shafts of the next winding with clamping tools, hold those clamping tools and twist the core material,
A method for manufacturing an iron core made of magnetic wire for a noise cut transformer, characterized in that both axes of each central axis are separated by a required distance and orthogonal, and the clamping tool is removed from the core material. (2) Form a winding groove on the outer circumferential surface with a depth corresponding to the cross-sectional shape and size of the core material and a length matching the initial ring shape and size, and the outer circumferential surface At least a part of the deepest part of the winding groove is provided at a plurality of locations with binding arrangement recesses that reach from the bottom to the deepest part of the winding groove or a depth exceeding it and that penetrate from one corresponding surface to the other side adjacent to the outer circumferential surface. 1. A magnetic wire winding frame, characterized in that a separating line is provided at the edge of the winding frame, so that the winding frame can be separated into at least two parts. (3) A twist characterized by providing a pair of opposing surfaces with grooves into which the central axis portions of the primary or secondary windings of the core material are fitted and held, thereby making it possible to separate the opposing surfaces. Clamping tool.