JPH06140269A - Amorphous rectangular iron core automatic forming method and device - Google Patents

Abstract

PURPOSE:To prevent an iron core from being loosened and varying in quality when it is formed so as to enable the iron core of high performance to be formed and lessened in assembling cost by a method wherein the iron core forming process of an amorphous rectangular iron core transformer is automated taking the paths of amorphous thin plates into consideration. CONSTITUTION:An amorphous rectangular iron core automatic forming device 100 is equipped with an amorphous thin plate transfer unit 100a, a winding frame unit 100d, a base 100e, an upper clamp unit 100b, winding roller units 100c and 100c' laterally provided side by side in a pair, and a control unit 11 so as to automate an amorphous rectangular iron core forming operation. By this setup, a transformer can be prevented from deteriorating in performance due to the looseness of an iron core used in it and enhanced in reliability. Furthermore, an iron core can be shortened in tact and lessened in assembling cost by automation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically forming a rectangular core portion of an amorphous rectangular iron core transformer. In particular, the present invention relates to an amorphous rectangular iron core automatic forming method and apparatus for winding and forming in consideration of the locus of an amorphous thin plate in order to prevent loosening particularly during winding.

[0002]

2. Description of the Related Art As a conventional technique, JP-A-63-241911 is known. In this conventional technique, a rectangular amorphous thin plate is once rolled into a circular shape, a frame is fitted in the center of the circular shape, and the shape is crushed from the periphery to form a rectangular shape.

[0003]

However, in the above-mentioned conventional technique, a rectangular amorphous thin plate is once rolled into a circular shape, a frame is fitted in the center of the circular shape, and the rectangular amorphous thin plate is crushed from the surroundings to form a rectangular shape. However, it is difficult to obtain amorphous rectangular iron cores that are stacked in close contact with each other because local wrinkles (small deformation) and displacement are induced in the amorphous thin plate, resulting in deterioration of the magnetization characteristics of the transformer. Then, there is a problem that the performance is deteriorated.

That is, the prior art has not considered the problem of producing a high-performance amorphous rectangular iron core which is free from local wrinkles (microdeformation) and is closely adhered and laminated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an amorphous rectangular iron core automatic forming method and apparatus capable of automatically forming an amorphous rectangular iron core of a high performance transformer in order to solve the above-mentioned problems of the prior art.

[0006]

In order to achieve the above-mentioned object, the present invention conveys an extended amorphous thin plate of a predetermined length and positions it on the upper part of a winding frame forming a central shape of molding, and the positioning is performed. The amorphous thin plate is clamped on the upper part of the bobbin, and then each part of the amorphous thin plate suspended on both side surfaces of the bobbin is not loosened while pressing each side of the bobbin from the upper part to the lower part of the bobbin. It is a method for forming an amorphous rectangular core, in which the ends are temporarily fastened and each end is temporarily fixed and overlapped at the lower part of the winding frame by repeating the number of laminations to form an amorphous rectangular core on the winding frame.

Further, according to the present invention, a winding frame forming a central shape of molding, a conveying means for conveying an extended amorphous thin plate of a predetermined length and positioning it on the upper part of the winding frame, and an amorphous material positioned by the conveying means. Clamping means for clamping the thin plate on the upper part of the winding frame and parts of the amorphous thin plate clamped by the clamping means and suspended on both side surfaces of the winding frame are directed from the upper part to the lower part of the winding frame on each side surface of the winding frame. And a winding means for temporarily fixing each end and overlapping each other at the lower part of the winding frame so as not to loosen while pressing it, and forming the amorphous rectangular iron core by winding the amorphous thin plates in the lamination number of times. It is an apparatus for forming an amorphous rectangular iron core configured as described above. That is, the amorphous rectangular iron core automatic forming apparatus of the present invention includes a conveying unit for a rectangular amorphous thin plate which is a forming material, a reel unit, a base, an upper clamp unit, left and right winding roller units, and a peripheral pressing unit. It is composed of a control unit for controlling these. The transport unit includes a gripping unit that grips a plurality of rectangular amorphous thin plates, a gripping confirmation unit, a moving unit that moves the rectangular amorphous thin plates together with the gripping unit to a predetermined position, and a movement amount that detects that the moving unit has moved normally. It is composed of measuring means.

[0008]

With the above structure, when forming an amorphous rectangular iron core, the amorphous thin plates are pressed against each other so that they are not loosened. With
Since the amorphous thin plate is sequentially pressed and fixed from the surroundings even after the profile position is displaced due to the movement of the roller, it is possible to secure a state in which there is no looseness until the tape is temporarily fixed after the winding is completed. It is possible to automatically form a high-performance amorphous rectangular iron core that is closely adhered and laminated.

[0009]

First, an amorphous rectangular iron core, which is a product of the present invention, will be described with reference to FIG. That is, FIG. 2 is a perspective view of an amorphous rectangular iron core and an enlarged view of an overlapping portion. The amorphous rectangular iron core is intended to reduce the loss of the pole transformer, and has been put into practical use by replacing the conventionally used silicon steel sheet as the iron core material in the transformer with a more efficient amorphous material. Its appearance is shown in Figure 2.
As shown in (1), the amorphous thin plates 12 are rolled up into a rectangular ring shape, and are laminated in a state of being combined in the overlapping portion. This is a wound core structure because the amorphous material is very thin (25 μm) and is not suitable for a laminated core as it is, and it has a rectangular structure to obtain a high voltage output with a large coil magnetic field length. is there. After this is annealed, the overlap part is expanded and the winding coils 16L and 16R are mounted on the primary side and the secondary side, and then the overlap part is closed and fixed by adhesion or the like to complete the transformer. is there. When a voltage is applied to the primary side coil and a current is made to flow, a current begins to flow in the secondary side coil 16R due to the induced magnetic field generated by the primary side coil 16L, and a voltage different from that on the primary side can be obtained. The characteristics of the transformer can be obtained.

An embodiment of an amorphous rectangular iron core automatic forming method and apparatus according to the present invention will be described below with reference to FIGS. That is, FIG. 1 is a perspective view of an automatic forming apparatus for an amorphous rectangular iron core according to the present invention, FIG. 2 is a perspective view of an object amorphous rectangular iron core [when a coil is inserted] and an enlarged view of an overlapping portion, and FIG. FIG. 4 is an explanatory view of the attaching method, FIG. 4 is an explanatory view of the amorphous rectangular iron core automatic forming method, FIG. 5 is a roller locus calculation diagram, and FIG. 6 is an amorphous rectangular iron core automatic forming apparatus provided with a peripheral pressing unit.

The amorphous rectangular iron core automatic forming apparatus 100 of the present invention comprises a conveying unit 100a for a rectangular amorphous thin plate 12 which is a forming material, a reel unit 100d, and a base 100e.
, The upper clamp unit 100b, the left and right winding roller units 100c, 100'c, and the peripheral pressing units 110a, 110b, 120
It is composed of a and 120b and a control unit 11 that controls them.

In the transport unit (transport means) 100a, the leading ends of a plurality of rectangular amorphous thin plates 12 cut into a predetermined length are gripped by the gripping means 14 and moved on the rail so that the length of the rectangular amorphous thin plates 12 is increased. Reel unit 10 according to
It is to be conveyed above 0d. That is, the transport unit
100a receives an operation command from the control unit 11 and grips a plurality of rectangular amorphous thin plates 12 at predetermined positions by a gripping means 14
The winding work position (the reel unit 10) is held by the moving means (not shown) that moves the holding means 14 while holding
The amorphous thin plate 12 is conveyed and moved together with the gripping means to the position (above 0d). At that time, grasping is confirmed by a sensor (not shown) built in the grasping means 14, and the grasping means is determined based on the movement amount commanded from the control unit 11 according to the length of the rectangular amorphous thin plate 12. The moving means for moving 14 is controlled, and highly accurate positioning of the amorphous thin plate 12 is realized above the winding unit 100d in consideration of the overlap margin.

A reel unit (reel means) 100d comprises a reel 2 having the same shape as the inner peripheral surface of a rectangular iron core, and the reel 10 as a base 10.
It is composed of a winding shaft 1 which is detachably attached and fixed to 0e. That is, the reel unit 100d serves as a core for annularly stacking and winding the amorphous thin plates 12 while pressing the outer peripheral surface of the reel 2, and to the base 100e via the reel (base coupling portion) 1. It is installed so that it can be removed.

The upper clamp unit 100b presses a plurality of rectangular amorphous thin plates 12 conveyed and positioned by the gripping means 14 of the conveying unit 100a from the upper portion of the reel unit 100a onto the reel unit on the base 100e. It is for clamping. Ie upper clamp unit
100b is provided on the base 100e above the reel unit 100d, and the clamp unit 100b receives the operation command from the control unit 11 and the clamp unit 100b is an amorphous thin plate on the reel unit 100d.
Secure 12 At that time, the clamp is confirmed by the sensor built in the clamp unit 100b, and the control unit
It informs 11 that the operation is finished.

Winding roller unit (winding roller means) 10
0c and 100'c are the upper clamp unit 100b and the reel unit.
Clamped on the upper part of 100d, a plurality of rectangular amorphous thin plates 12 in a hanging state are pressed to apply tension by following the reel unit 100d or the rectangular core already wound on the reel unit 100d. The loci of the rollers 3L and 3R for winding without loosening are set to 3 on the XY-θ axis.
Roller movement control means (X table 5L, 5R and X table drive motor 6L, which can be drawn while moving in the axial direction)
6R and Y table 13L, 13R and Y table drive motor 15L, 15
R and θ table 7L, 7R and θ table drive motor 8L, 8
R). Each of the Y-tables 13L and 13R is a Y-table driving mode along the guides 14L and 14R in the y-axis direction.
It is constructed so that it can be moved by each of the feed screws 19L, 19R connected to each of the Y tables 15L, 15R, and each movement of the Y tables 13L, 13R is performed by each of the Y table drive motors 15L, 15R. Controlled by. Each of the θ tables 7L and 7R is a Y table.
It is placed so that it can rotate on each of the bulls 13L and 13R,
The rotation amount θ of each of the θ tables 7L and 7R is controlled by each of the θ table drive motors 8L and 8R. X table 5
Each of L and 5R is connected to each of X table driving motors 6L and 6R in the x-axis direction along each of guides 20L and 20R provided on each of θ tables 7L and 7R. It is constructed so that it can be moved by each of the feed screws 18L and 18R.
The movement of each 5R is controlled by each of the X-table drive motors 6L and 6R. Each of the rollers 3L and 3R is supported by each of the X tables 5L and 5R so as to be capable of finely moving in the x-axis direction, the pressing springs 4L and 4R are attached, and the impact force is applied to each of the rollers 3L and 3R. It is structured so that you can escape when you hit. It is clear that the pressing force may be applied by the spring pressure of the pressing springs 4L and 4R. Also, Y-table drive motors 15L and 15R, θ-table drive motors 8L and 8R, and X-table drive motors 6L and 6R.
Each of the encoders 17L, 17R,
It is equipped with 21L and 21R.

The winding roller units 100c and 100'c are installed as a pair on the base 100e in order to press the amorphous thin plates against the winding frame from both left and right sides of the winding frame unit 100d. That is, the winding roller units 100c and 100'c are pressed and fixed to the upper part of the winding frame unit 100d, and then the left and right rollers 3L are pressed while pressing the amorphous thin plate 12 around the winding frame unit 100d with the respective rollers 3L and 3R. , 3R has a function of winding in a rectangular shape in consideration of the overlap margin. In order to move the rollers 3L, 3R in consideration of the locus so as to align them, there is provided a roller movement control means capable of moving or rotating in the XY-θ axis direction, and encoders 17L, 17R installed on each axis. The roller locus measuring means such as 21L and 21R feedback-controls the roller position information to perform the winding operation by the rollers 3L and 3R. Further, during winding, the rollers 3L and 3R are pressed by the roller moving means while being traced from the upper portion to the lower portion of the winding frame 2 so as not to cause loosening, thereby performing winding molding. The winding of the winding frame 2 can be obtained by moving the rollers 3L and 3R according to the locus calculated by the roller moving means. That is, the winding on the side surface of the winding frame 2 is + θ as shown in FIGS. 3 and 5.
In the state where the angle is given, by applying a pressing force in the x-axis direction and lowering it in the y-axis direction, it is possible to apply a predetermined pressing force and perform molding without looseness. In the lower part of the reel 2, α: the angle between the center of the arc (r) of the reel and the horizontal line connecting the centers of the rollers 3L and 3R, and θ: the horizontal line and the axis of the x-axis The angle formed is set to a constant value on the side surface of the bobbin, and the angle is sequentially changed toward the lower part of the bobbin to be given, and the locus calculated according to the formulas (4) and (5) described later is taken. To Laura
By controlling the x-axis and y-axis of 3L and 3R, it is possible to perform molding without looseness.

Surrounding presser unit (surrounding presser means) 110a, 1
As shown in FIG. 6, a plurality of amorphous thin plates 10b, 120a, 120b are formed by winding the winding roller units 100c, 100'c while following the winding frame unit 100d without loosening.
This is to prevent the wrapping roller units 100c and 100'c from starting to loosen as they move. That is, the plurality of peripheral pressing units 110a, 110b, 120a, 120b are the winding roller units 1
The rollers 3 of the winding roller units 100c, 100'c are used to ensure that the amorphous thin plate is not loosened even after the winding of the amorphous thin plate around the circumference of the reel unit 100d by 00c, 100'c.
After the operation of the control unit 11 is pressed by the winding roller units 100c and 100'c, the amorphous thin plate 12 wound around the circumference of the reel unit 100d is pressed from the position where the L and 3R have been moved. To work. The peripheral pressing units 110a, 110b, 120a, 120
The control unit 11 is notified of the pressing operation status as a pressing confirmation signal from a sensor built in b.

As shown in FIG. 6, the control unit (control means) 11 has a known value a: the distance from the θ-axis center to the center of the arc (r) of the reel 2, b: the reel 2 Distance from the center to the center of the reel arc (r), c: Distance from the inflection point of the straight line portion and the arc portion (r portion) of the reel 2 to the center of the reel arc portion (r), r: Winding Radius of curvature of frame arc portion (r portion), R: radius of curvature of roller, X ₀ : distance between θ-axis center and X-axis origin, y ₀ : distance between winding frame center and Y-axis origin,
α ₀ : The angle of α at the inflection point of the straight part of the winding frame and the R part is input, and t: plate thickness, β: clearance thickness are given,
α: The angle between the center of the arc (r) of the reel and the center of the rollers 3L, 3R and the horizontal line, and θ: The horizontal line and x
The angle formed between the axis of the shaft and the side surface of the winding frame is set to a constant value and sequentially changed toward the lower part of the winding frame, and the value is given, and x is calculated according to the formulas (4) and (5) described later. A locus calculation unit that calculates the control amounts x and y of the axes and the y-axis, and controls the winding roller units 100c and 100'c based on x, y, and θ calculated by the locus calculation unit, and It is also composed of a controller that also controls the unit. By controlling these units, the control unit 11 automatically forms the amorphous rectangular iron core to reduce the looseness that may occur during molding and suppress the variation, and also to shorten the tact time to achieve high-performance amorphous rectangular core. The iron core can be molded and the assembly cost can be reduced. The control unit (control means) 11 gives an operation command from the controller section based on the operation confirmation signals from these units, and at the same time, calculates the roller locus correctly, the rectangular shape dimension and the number of amorphous thin plates are calculated by the locus calculation section. Operates from data. The roller locus data calculated by the locus calculation unit is sent to the controller unit. The controller unit controls the XY-θ axis movement of the winding roller units 100c and 100'c based on the roller locus data.

The amorphous rectangular iron core automatic forming apparatus 100 according to the present invention is automatically wound with the above-mentioned structure in consideration of the locus of the amorphous thin plate 12 wound around the winding frame unit 100d, and after winding. By tentatively fixing the tape to the overlap portion while pressing the periphery to perform molding, winding molding can be performed without looseness.

The amorphous rectangular iron core has a wound iron core structure as described above, and if there is a defect in the magnetic path such as a gap between the iron cores, the efficiency of the transformer decreases due to magnetic loss. For this reason, when winding the amorphous rectangular iron core, it is necessary not to loosen it as much as possible so as not to create a gap. After winding one layer, tape is used for temporary fixing so that it does not become loose when the next layer is wound.
Further, after annealing, the amorphous thin plate 12 can be elastically deformed although some curl remains, so that the coils 16L and 16R can be inserted.

The amorphous rectangular iron core is annealed while a plurality of sheets are wound in a rectangular shape while applying a magnetic field in a fixed direction, and then the rectangular end faces are opened to provide a transformer coil 16R on the primary side and the secondary side. , 16L is inserted, and it is closed again and joined. As shown in FIG. 2, in the amorphous rectangular iron core, since the overlapping end portion is provided on the rectangular end surface on the open side, the overlap margin should be sufficiently considered in the positioning of the supply of the amorphous thin plate 12 during winding. Need to be kept.

As described above, when forming the amorphous rectangular iron core, it is necessary to accurately position the amorphous thin plate 12 in consideration of the overlap margin and to wind it so as not to loosen it.

Next, a series of automatic forming of the amorphous rectangular iron core will be specifically described with reference to FIG.

As shown in FIG. 4 (1), the transport unit (transport means) 100a (not shown in FIG. 4) considers the overlap of the amorphous thin plates 12 of various lengths with the reel unit 100d. And carry and position. Next, as shown in FIG. 4 (2), the upper clamp unit 100b is pressed and fixed to the reel unit 100d, the gripping means 14 of the transport unit 100a is opened, and the end face of the amorphous thin plate 12 is released. At this time, since the amorphous thin plate 12 is very soft before annealing, it is sagged downward due to the influence of gravity.

Next, the encoders 17L, 17R, 2 are arranged so that the rollers 3L, 3R move along the loci calculated by the control unit 11.
Y table drive motors 15L, 15R, θ table drive motors 8L, 8R, X based on the displacement detected from each of 1L, 21R
By controlling each of the table drive motors 6L and 6R, as shown in FIG. 4 (3), the pair of left and right winding roller units 100 are provided.
c and 100c 'move left and right simultaneously on the circumference of the winding frame unit 100d from the root of the pressing portion of the upper clamp unit 100b, and the rollers 3L and 3R at the tip end are pressed to follow the locus of the amorphous thin plate 12 to perform winding forming. Furthermore, the rollers 3L and 3R are
The amorphous thin plate 12 is leveled with a constant compression force of the pressing springs 4L and 4R, which are roller pressing means, and the amorphous thin plate 12 is wound without looseness on the reel unit 100d or the amorphous rectangular iron core on which the amorphous thin plate 12 is already wound. It can be attached and molded, and can be wound without looseness.

Next, as shown in FIG. 4 (4), the winding roller unit 100'c on one side is wound from the starting end (the portion corresponding to the lower side of the overlap portion) to the tape 20 and temporarily fixed to the tape [in the figure]. Direction]. Similarly, as shown in FIG. 4 (5),
The wrapping roller unit 100c on the opposite side is used to wind the end (the portion corresponding to the upper side of the overlap portion) to temporarily fix the tape 20.

The above series of operations shown in FIGS. 4 (1) to 4 (5) are automatically repeated under the control command of the control unit 11 until the predetermined number of laminated layers is obtained, and the winding molding as shown in FIG. 4 (6) is performed. finish.

Incidentally, even during the winding operation shown in FIGS. 4 (3) to (5), looseness may occur due to the movement of the roller pressing position.
The peripheral pressing unit 100e arranged around 0d prevents loosening.

FIG. 6 shows a peripheral pressing unit 100a, 110b, from four directions of a left shoulder, a right shoulder, a left side, and a right side in an amorphous rectangular iron core automatic forming apparatus 100 which is an embodiment of the present invention.
It is provided with 120a and 120b.

Therefore, in this embodiment, in the case of FIG. 4 (3), the peripheral pressing unit 110a, 1 for the left shoulder or the right shoulder is pressed.
10b is operated, and in the case of FIG. 4 (4), four peripheral pressing units 100a, 110b, 120a, 120b are operated.

Next, the roller locus calculation method used in the embodiment of the present invention will be described with reference to FIG.

When moving, X, Y,
This is performed by the cycle control of a DC motor that is a roller moving means that moves by θ3 axis.

In order to wind the roller 3R with a constant pressing force, it is necessary to know the correct trajectory of the roller. That is, since the position of the roller 3R changes each time the amorphous thin plate 12 is wound, the roller 3R moves while repeatedly calculating the position.

The calculation method is to divide the trajectory of the roller 3R into several tens of points, and to cope with smooth movement. It is desirable to express that point by an angle α from the horizontal of the center of the circular arc in the lower part of the winding frame 2 which becomes difficult to calculate.

Further, in order to make θ the movement shown in FIG. 3, the change angle of θ corresponding to the angle of α is considered in advance. Therefore, the X and Y command values at a certain point α are expressed by the following equation.

[0036]

R ′ = r + R + D (Equation 1)

[0037]

## EQU00002 ## D = (t + D ') n-D' (Equation 2)

[0038]

Equation 3] D '= (β / (90 ° -α 0)) (α-α 0) in equation (3) winding frame sides of the alpha = alpha _0.

[0039]

X = ((a−r ′ · cos α) / cos θ) −x ₀ (Equation 4)

[0040]

Equation 5] _{y = y 0 - (b-} c + r '· sinα- (a-r' · cosα) tanθ) ( Equation 5) n: number of stacked D ': angular change in the lower portion of the bobbin with increasing number of layers Equivalent to the clearance thickness D: Increment of the roller position that changes as the number of stacks increases a: Distance from the θ-axis center to the center of the arc of the reel (r) b: The center of the reel to the arc of the reel Distance to center of (r part) c: Distance from inflection point of linear part of winding frame and winding arc part to center of winding arc part r: Radius of curvature of winding arc part α: Arc of winding part Angle between the horizontal line of the center of the roller and the center of the roller θ: The angle between the horizontal line and the axis of the x-axis (a constant value on the side of the reel) x ₀ : Santa of the θ-axis and the origin of the X-axis distance y _0: distance between the winding frame center and Y axis origin t: plate thickness beta: gap thickness alpha _0: variable linear portion and an arc portion of the bobbin As the angle above description of alpha at point calculation, roller trajectory (x, y) on the side of the reel from alpha = alpha _0, and the θ to a fixed value (number 4) and (5) below can do.

Further, in the lower part of the winding frame, the locus (x, y) of the roller is changed by changing α and θ (Equation 4).
It can be calculated from the equation and the equation (5). The locus (x, y) calculated by the control unit 11 in this way
Encoder 17 so that rollers 3L and 3R move as
Y table drive motor 15L, 15R, θ table drive motor 8 based on the displacement amount detected from each of L, 17R, 21L, 21R
By controlling each of the L, 8R and X table drive motors 6L, 6R, the amorphous thin plate 12 is wound and formed on the reel unit 100d or the amorphous rectangular iron core on which the amorphous thin plate 12 is already wound, without loosening. Winding is possible in this state.

[0042]

As described above, according to the present invention, when forming an amorphous rectangular iron core, the amorphous thin plate is pressed so as not to loosen, and the winding orbiting is performed so that the winding is performed. It is possible to prevent slack between them, and even after the tracing position is displaced by the movement of the roller, the amorphous thin plates are pressed and fixed sequentially from the surroundings. It is possible to ensure that there is no such condition, and prevent the deterioration of the transformer performance caused by loosening. Further, it is possible to eliminate the variation in looseness, which has conventionally depended on the intuition of the operator, by automating the above operation, and it is possible to improve the reliability of the product. In addition, by automatically controlling a series of cooperative winding operations, it is possible to improve work efficiency, and it is possible to achieve a reduction in assembly cost due to a reduction in tact time.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of an amorphous rectangular iron core automatic forming apparatus of the present invention.

FIG. 2 is a perspective view of an amorphous rectangular iron core according to the present invention (when a coil is inserted) and an enlarged view of an overlapping portion.

FIG. 3 is a diagram for explaining winding of an amorphous thin plate according to the present invention.

FIG. 4 is a diagram for explaining an amorphous rectangular automatic iron core forming method according to the present invention.

FIG. 5 is a diagram for explaining a roller locus according to the present invention.

FIG. 6 is a view showing an example of an amorphous rectangular core automatic forming apparatus provided with a peripheral pressing unit according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Reel unit base coupling part (shaft part), 2 ... Reel 100: Amorphous rectangular iron core automatic forming apparatus of the present invention, 1
00a ... transport unit, 100b ... upper clamp unit, 1
00c… Left winding roller unit 100c '… Right winding roller unit, 11… Control unit

(72) Inventor Teru Fujii, 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa, Ltd., Institute of Industrial Science, Hitachi, Ltd. (72) Kenji Taguchi, 46, Tomioka, Nakajo-machi, Kitakanbara-gun, Niigata Prefecture 1-share company Hitachi, Ltd. Nakajo Plant (72) Inventor Kazumi Ito Kazushigaoka 2-4-14-1 Chofu-shi, Tokyo Tokyo Electric Power Co., Inc. Technical Research Institute (72) Inventor Shoichiro Etsune 2-4 Tsutsujigaoka, Chofu-shi, Tokyo Tokyo Electric Power Co., Ltd.

Claims (3)

[Claims] 1. A stretched amorphous thin plate having a predetermined length is conveyed and positioned on an upper part of a winding frame forming a center shape of molding,
The positioned amorphous thin plate is clamped on the upper part of the bobbin, and then the parts of the amorphous thin plate suspended on both side surfaces of the bobbin are loosened while pressing from the upper part to the lower part of the bobbin on each side of the bobbin. A method for forming an amorphous rectangular iron core, characterized in that the amorphous rectangular iron core is formed on the winding frame by repeating winding so that each end is temporarily fixed and overlapping at the lower part of the winding frame is repeated for the number of laminated layers. 2. A winding frame forming a central shape of molding, a transporting unit for transporting an extended amorphous thin plate having a predetermined length and positioning it on the upper part of the winding frame, and an amorphous thin plate positioned by the transporting unit. Clamping means for clamping on the upper part of the reel, and parts of the amorphous thin plate clamped by the clamp means and hung on both side surfaces of the reel while pressing each side of the reel from the upper part to the lower part of the reel. Winding means for winding so as not to loosen, temporarily fixing each end and overlapping at the lower part of the winding frame, and forming the amorphous rectangular iron core by winding the number of laminated layers of the amorphous thin plate on the winding frame. A device for forming an amorphous rectangular iron core, which is characterized in that 3. The apparatus for forming an amorphous rectangular iron core according to claim 2, wherein the winding means has a roller pressing means.