JPH02256213A - Wound core transformer and manufacture thereof - Google Patents

Abstract

PURPOSE:To manufacture a wound core transformer with stable space factor of a core without damage of a core steel band being brittle by annealing by feeding the core steel band made of an amorphous magnetic thin band wound in a large diameter and annealed from the outer periphery of its winding unit, applying a predetermined tension thereto, and winding it around the core of a bobbin by predetermined number of turns to form a wound core. CONSTITUTION:In case of winding a wound core 15, a core steel band 16 made of an amorphous magnetic thin material corresponding to several wound cores wound in a large diameter and annealed is sequentially fed from the outer periphery of the winding unit, and wound on a winding core 7 of a bobbin 5 already having a coil. The steel band 16 made of the amorphous magnetic thin band wound in a large diameter in a spool and annealed is thin and brittle, but can be directly wound on the core having a small diameter of the bobbin smoothly fed from the outer periphery of the winding unit and rotated. Accordingly, even if the material itself is thin and brittle, it is not damaged by winding.

Description

[Detailed Description of the Invention] Purpose of the Invention [Industrial Field of Application] The present invention provides a coil and a coil provided between flanges formed at both ends of the winding core of a bobbin so as to sandwich the winding core from above and below. , manufacturing a wound core transformer comprising a wound core in which an annealed amorphous magnetic ribbon is continuously wound around a core of a bobbin equipped with the coil, and the wound core transformer. related to a device for

[Conventional technology]

In recent years, iron cores used in stationary electric equipment such as transformers have been replaced with conventional silicon steel strips using amorphous magnetic materials (hereinafter referred to as amorphous magnetic strips), which have excellent low-loss characteristics. ) has been developed, and its practical use is currently underway for use as a core material for wound cores and laminated cores for stationary electrical equipment such as transformers and accelerators. This amorphous magnetic ribbon has extremely low core loss and excitation current, and in particular, the core loss is 1/2 to 8 times that of the current highest grade silicon steel strip.
For example, when this is used in the iron core of a distribution transformer, an excellent energy saving effect can be expected. However, amorphous magnetic ribbons are manufactured by cooling molten metal at high speed, and due to manufacturing reasons, this plate is extremely thin, about 20 to 30 μm, and has low rigidity. Furthermore, it is hard and brittle. ing.

Furthermore, after annealing, it was extremely brittle and could break during handling. For this reason, currently, when amorphous magnetic ribbons are used as core materials, development is underway mainly for use in wound cores of power distribution transformers.

When manufacturing a wound core transformer using the amorphous magnetic ribbon, the following two methods are generally considered.

First, an amorphous magnetic ribbon is wound into a circular shape, formed into a rectangle, and then subjected to strain relief annealing to provide an uncut core with excellent magnetic properties.A coil is wound around this core via a bobbin. When fabricating a wound core transformer, the second step is to form a wound core by stacking multiple amorphous magnetic ribbons cut at each turn and sequentially shifting them stepwise in the winding direction of the wound core. After annealing this wound core, each wound block is once disassembled, and the wound core is assembled by sequentially inserting it into the coil starting from the inner block. There are cases where transformers are manufactured.

However, in the former uncut wound core transformer,
When winding a coil around a winding core, the coil conductor is wound by rotating a bobbin fitted to the leg of the winding core.
The wound core, which is very bent due to annealing, is easily damaged, and there is a risk that the core properties will be adversely affected. For this reason, when winding the coil, measures were taken to prevent the winding core from being damaged by the rotation of the bobbin, for example by wrapping a tape made of high-strength fiber such as glass fiber around the core legs of the winding core. Therefore, there were problems such as the winding work of the coil conductor was very time consuming and troublesome.

In addition, in the latter method, a long amorphous magnetic ribbon was cut at a predetermined circumferential length for each turn, and the pieces were assembled by sequentially shifting the cutting position from the inner one, so it required less manpower to assemble the iron core. It is time-consuming and, moreover, once the annealed wound core is disassembled and reassembled, the core material may be chipped or cracked, resulting in damage and deterioration of the characteristics of the wound core.

Therefore, in order to solve each of the above-mentioned problems, for example, as shown in Japanese Patent Application Laid-open No. 176117/1982,
The amorphous magnetic ribbon is wound around the rotating body (temporary winding) by the rotation of the rotating body that surrounds the legs of the coil, and then the rotating body is rotated in the opposite direction to the direction in which the amorphous magnetic ribbon is wound. Then, the wound amorphous magnetic ribbon is wound around the legs of the coil (main winding).
That is, a wound core transformer has been proposed that includes a wound core and a coil with an excellent space factor by continuously winding an amorphous magnetic ribbon around the legs of the coil. However, in this transformer, after winding the amorphous magnetic ribbon, the wound core was, for example, excited by high frequency and annealed by the heat generated by the wound core itself, so the insulating material of the coil had poor heat resistance. It was necessary to use a high-quality material, and since the winding of the winding core had to be done temporarily and then finally, the winding work of the winding core was troublesome and the production cost increased. there were.

Also, rFig-30 of Japanese Patent Application Laid-open No. 58-123708
As shown in 4, the bobbin with the coil inserted,
Attach the bobbin to the coil support device of the winding device so that its axis is horizontal, insert the core sleeve into the center of the bobbin through the opening between the other ends of the bobbin, and suspend the drive belt from the outside. Between the drive belt and the core sleeve, a core steel strip made of a silicon steel strip equivalent to one wound core is annealed and once wound into a circular shape, and the core steel strip is placed on the inner diameter side of the wound portion. An example has been devised in which the core sleeve is rotated by the drive belt after being unrolled from the core and the end thereof is inserted, and the core steel strip is wound around the core sleeve to manufacture a wound core transformer. Paying out a thick core steel strip like the silicon steel strip from the inside diameter side of its winding part is because the inside diameter of the feeding side and the outside diameter of the core sleeve inserted into the bobbin are almost the same. This is because even an annealed iron core steel strip can be easily adapted to the small-diameter core sleeve and can be wound with almost no winding distortion. In this case, winding an annealed amorphous magnetic ribbon as described above may be considered, but the amorphous magnetic ribbon is very thin and, moreover, becomes stiff and brittle due to the annealing process. If the belt is unrolled from the inner diameter side of the winding part as described above, it will overlap or intertwine in a spiral shape, making it difficult to unwind smoothly. Because rotational force is transmitted and the amorphous magnetic ribbon is wound, a large tensile force acts on the amorphous magnetic ribbon, causing damage to the amorphous magnetic ribbon.
There was a problem in that the wound core could not be wound smoothly.

For this reason, the amorphous magnetic ribbon before annealing is generally wound in consideration of the above points, but even in this case, the tensile force of the belt acts during winding, causing the winding to take place on the bobbin. The rolled amorphous magnetic ribbon may be unnecessarily compressed and wrinkles may occur during winding or on the wound core, the outer periphery may become uneven and the circular winding may collapse, or the winding may become meandering. As a result, the end faces of the wound core become uneven, making it difficult to wind the core smoothly and well. Furthermore, since annealing treatment is required after winding, the wA edge material of the coil must have excellent heat resistance as described above, which is uneconomical.

[Problem to be solved by the invention]

In view of the above-mentioned conventional problems, the present invention has been developed so that the winding core of a bobbin already equipped with a coil can be fixed without damaging the amorphous magnetic ribbon, which becomes extremely brittle after annealing and is likely to be damaged during handling. Smooth all around.

A wound core transformer with an annealed core that has been well wound and formed, and an annealed amorphous magnetic ribbon can be quickly and easily created by stabilizing the space factor of the core while applying a certain tension. The object of the present invention is to provide an apparatus for manufacturing a wound core transformer having a wound core that can be wound efficiently and has excellent core characteristics.

Structure of the Invention [Means for Solving the Problems] The present invention takes the measures as described in the claims above, and its effects are as follows.

[For production]

Amorphous magnetic ribbons equivalent to multiple wound cores are placed on a turntable and wound into a circular shape, and the core steel strip is annealed. While applying a constant tension using a tension control device, A wound core transformer includes a wound core that is wound a predetermined number of times around the core of a bobbin into which a coil is inserted to stabilize the space factor of the core, and a winding device that rotatably places the bobbin. The equipped movable table is moved in a direction perpendicular to the feeding direction of the iron core steel strip every time the winding core is wound for one unit, and the transformer with the winding core wound thereon is removed and the winding core is wound. The present invention is characterized in that it improves the productivity of a wound core transformer having a wound core with excellent core characteristics by efficiently performing advance preparation work and winding an amorphous magnetic ribbon produced by annealing.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 7.

In FIG. 5, reference numeral 1 denotes a wound core transformer of the present invention, which includes an annular bobbin 5, a plurality of coils 10 arranged radially on the bobbin 5, and a coil 10 between the legs of the coil 10. It is composed of a wound core 15 wound around the periphery. Further, in the bobbin 5 shown in Fig. 6, 6 and 6a indicate a pair of bobbin bodies formed in a semicircular shape, and when not in use, they are divided into semicircular shapes as shown in the figure and held, When assembling, the winding core 15 is joined in a circular shape using an adhesive or the like so that it can be wound. 7 is the winding core of the bobbin 5, which has a hollow cylindrical shape and is used.

Flange plates 8, 8a are integrally connected to the lower end.

The coil 10 includes a low-voltage winding and a high-voltage winding (not shown), and is wound into a rectangular shape with a hollow hole 10a through which the peripheral wall of the bobbin 50 can be penetrated with a small gap. Further, in the wound core 15, 16 is a long iron core steel strip wound around the winding core 7 of the bobbin 5, and in the present invention, it is formed of an amorphous magnetic ribbon subjected to an annealing treatment. It is.

Next, referring to FIGS. 1 to 3, the structure of a core winding device 2 for winding the core 15 around the bobbin 5 will be described. The winding device 2 includes a movable table 17 slidably mounted on one side of the base 3 so as to be perpendicular to the length direction of the base 3, and a plurality of movable bases 17 for winding the core steel strip 16 onto the bobbin 5. It is composed of a winding device 4, a delivery device 9 that sends out the core steel strip 16 to be wound around the bobbin 5, and a tension control device 11 that applies a constant tension to the core steel strip 16 that is wound around the bobbin 5. ing.

As shown in FIG. 2, the winding device W4 has a plurality of (
In this example, two units) are installed, each of which has a configuration of fixing means A for fixing and holding the coil 10, rotation support means B for rotatably supporting the bobbin 5, and winding of the core steel strip 16 for the bobbin 5. In the fixing means, 12 is a fixing bolt installed upright on the movable base 17, 13 is a coil holding plate loosely fitted to this fixing bolt 12, and 14 is a fixing bolt. As shown in FIG. 2 around the bolt 12, a plurality of coil to device mounting tables are installed in a radial direction around the bolt 12. In the rotation support means B, reference numeral 18 denotes a bearing stand arranged on the movable table 17 around the fixing bolt 12 in an inclined manner so that the bolt 12 side is higher; in this example, as shown in FIG. , are installed at equal intervals in the circumferential direction on the outside of the mounting table 14 with the fixing bolt 12 at the center. A metal support roller 19 is rotatably supported via a roller shaft so as to face obliquely upward.

As shown in FIG. 1, this support roller 19 is formed in the shape of a truncated cone with a thinner tip and a thicker proximal end. The bearing stand can be mounted in one day at a height that can rotatably support the collar plate 8a. Note that the support roller 19 is not limited to a truncated cone shape, but may be straight, or may be formed using hard rubber.Furthermore, the outer periphery of the roller 19 is subjected to a low left processing. Further, in the rotation drive means C, 20 is a drive roller which also serves as a support roller 19, and is drivingly connected to an electric motor 22 via a reduction gear 21. 23
2 is a presser roller that holds the flange plate 8a of the bobbin 5 between the drive roller 20 and the support shaft 2, as shown in FIG.
4 is rotatably attached, and 25 is the support shaft 2.
An arm 27 is connected to a movable plate 26 connected to the movable base 17 and movably fixed on the movable base 17.
The shaft of the handle 27 passes through the elongated hole 2B of the movable plate 26 and is screwed onto the movable base 17. 29 is an arm pressing spring stretched between the arm 25 and the movable plate 26, as shown in FIG. .

Next, as shown in FIGS. 1 and 3, the movable base 17 to which the plurality of winding devices 4 are attached has two hands on one side of the base 3, which are perpendicular to the direction in which the core steel strip 16 is fed out. The movable base 1 is movably fitted and held via a sliding body 32 to a guide rail 31 laid in a row, and the movable base 1
7 is moved by a cylinder device 33 mounted on the base 3 below.

33, a is a connecting plate that connects the movable base 17 and the driving part of the cylinder device 33.

Next, in the delivery device t9, 34 is a rotating shaft rotatably supported by a bearing 35 mounted on the base 3, a turntable 36 is fixed to this rotating shaft 34, and 37
38 is a support bolt erected in the center of this turntable 36, and 38 is a winding frame in which the annealed core steel strip 16, which is the material for winding the S core 15, is wound to a length that can be wound around a plurality of wound cores. is placed on the turntable 36 by fitting its center hole into the support bolt 37, and is fixed to the turntable 36 with a nut 39 screwed into the support bolt 37.

40 is a mounting body vertically installed below the base 3;
An electric motor 41 connected to the rotating shaft 34 and rotating the turntable 36 in the unwinding direction of the core steel strip 16 is attached to the 0.

Next, in the tension control device 11, reference numeral 42 denotes a leg stand located on the side of the movable table 17 on the base 3, and on the table 42, as shown in FIG. are rotatably installed at regular intervals. Reference numeral 45 designates a tension roller disposed between the guide rollers 43 and 44 in FIG.

As shown in FIG. 2, the shaft rod 47 inserted into the bearing device 46
The support lever 48 is rotatably erected on the free end of a support lever 48 which is rotatably supported on the footrest 42 via the support lever 48 . 49 is a rotary encoder which is drive-coupled with the shaft rod 47 and is installed vertically on the back surface of the leg stand 42, which detects the movement angle of the tension roller 45 via the support lever 48, and transmits the detection signal to the fourth rotary encoder.
It is sent to the control device 50 shown in the figure. On the other hand, the control device 50
calculates the numerical value indicating the movement angle of the tension roller 45 detected based on the detection signal from the rotary encoder 49 and a preset numerical value, and controls the electric motor 41 so that the iron core steel strip 16 is always constant. The iron core steel strip 16 is fed out to the bobbin 5 side by controlling the rotation so as to create tension. In FIG. 2, 51 is a tension spring for returning the support lever 48 to its original position, and 52 is a guide roller for the core steel strip 16 attached to the winding device 4 side.

Next, the case of manufacturing the wound core transformer 1 will be described.

First, the required number of coils 10, which have been wound in advance, are inserted into the bobbin body 6°6a which is divided into two as shown in FIG. 6, using the hollow holes 10a. The annular bobbin 5 is provided by bonding the parts 6 and 6a with an adhesive at their divided parts.

Next, as shown in the front side of FIG. 2, the coils 10 are arranged radially on the bobbin 5 with the fixing bolt 12 as the center and mounted on the mounting table 14, and the axis between the bobbin 5 and the fixing bolt 12 is Match the core.

In this way, coil 10! When placed on the 1llf stand 14, as shown in FIG.
8a comes into contact with each support roller 19. In this state, after aligning the axes of the bobbin 5 and the fixing bolt 12, the coil holding plate 13 is placed on the coil 10, and the nut 53 is screwed onto the tip of the fixing bolt 12 protruding from the holding plate 13. Each coil 10 is fixedly supported on a mounting table 14. As described above, the coil 10 attached to the bobbin 5 is set on the winding device 4 facing the sending device 9 on one side of the movable base 17 to wind the iron core steel strip 16, but in the present invention, Since two winding devices 4 are provided on the movable table 17, the remaining winding device 4 (upper side in FIG. 2) is equipped with a bobbin 5 equipped with a coil 10 in the same manner as described above, and a core steel strip 16 is immediately attached to the winding device 4. It may be prepared so that it can be rolled.

As described above, after the coil 10 is set in the winding device 4, the handle 27 is loosened to move the moving plate 26 along the long hole 28 in a direction approaching the bobbin 5, and the presser roller 23 is moved as shown in FIG. The bobbin 5 is placed on the lower flange plate 8a, and the drive roller 20
Press to the side.

Next, the iron core steel strip 16 wound around the bobbin 5 is, for example, an amorphous magnetic ribbon wound around the winding frame 38 and annealed in this state. An iron core me16 having a length that can be wound around the wound core for a machine is used, which is wound around a winding frame 38. This winding frame 38 is placed on the turntable 36, and a nut 39 screwed onto the support bolt 37 is screwed onto the turntable 36.
It is fixed to the turntable 36 with the .

In this way, the coil 10 is attached to the winding device 4, and the iron core steel strip 16
When winding the single-turn core 15, the core steel strip 16 wound around the winding frame 38 is placed on the outer diameter side of the winding part (outermost ), and as shown in FIG. 4, the iron core steel strip 16 is meandered across the guide roller 44 -> tensile roller 45 (indicated by a two-dot chain line in FIG. 4) - guide roller 43 - guide roller 52. the end of the core steel strip 16,
For example, of the two bobbins 5 shown in FIG. 2, the winding core 7 of the bobbin 5 set in the winding device 4 on the lower side of the figure is fixed with tape or the like. In this state, the tension control device 11 is not yet activated, so the support lever 48 returns to its original position (starting point) together with the tension roller 45, as shown by the two-dot chain line in FIG. 4, due to the force of the tension spring 51. There is.

On the other hand, in the control device 50, the iron core steel strip 16
The optimum tension can always be obtained by considering how much tension to apply when winding to ensure a good space factor for the core and to be able to wind it with a tightening force that does not impair the core properties. Enter the numerical values in advance. After this, the electric motor 22 of the winding device 4 is started. ! Activation of the motor 22 causes the drive roller 20 to rotate via the speed reducer 21 in the direction in which the bobbin 5 winds the core adjustment band 16.

As a result, the lower flange plate 8a of the bobbin 5 is held between the presser roller 23 and the drive roller 20, and the rotation of the drive roller 20 causes the bobbin 5 to come into contact with the other support roller 19. The core copper band 16 is surely rotated in the direction of winding. Therefore, around the winding core 7 of the bobbin 5, the core steel strip 16 that is unwound from the outermost periphery of the large-diameter steel core strip 16 wound around the winding frame 38 is sequentially wound.

At this time, since an appropriate tension is applied to the iron core steel strip 16 by the tension roller 45 of the tension control device 11, it is wound around the winding core 7 of the bobbin 5 with a uniform tightening force suitable for winding the winding core 5. be able to.

That is, at the time when the electric motor 22 of the winding device 4 is started, the electric motor 41 that drives the turntable 3G is not started because the command signal has not yet been output from the control device 50.
Therefore, only the bobbin 5 rotates, and the tension roller 45 at the position shown by the two-dot chain line in FIG. Move gradually. Therefore, the support lever 48 on which the tension roller 45 is erected also rotates in the same direction about the shaft rod 47 against the force of the tension spring 51.
The rotary encoder 49 connected to the rotary encoder 49 is rotated. When the rotary encoder 49 rotates, a signal corresponding to the rotation angle, that is, a signal indicating the position of the tension roller 45 is output from the rotary encoder 49 to the control device 50, and the numerical value of this output signal is set in advance to the control device 50. If the value exceeds the value manually set to 50, for example,
In FIG. 4, a tension roller 45 indicated by a two-dot chain line
In order to immediately start the electric motor 41 of the sending device 9 from the control device 50 when the position of the tension roller 45 shown by the solid line (when this position is the position where the iron core steel strip 16 is kept in the optimum tension state) is exceeded. A signal is output, and the electric motor 41 is immediately activated, the turntable 36 is rotated, and the iron core steel strip 16 is pulled out toward the tension control device 11 side.

The feeding speed of the iron core steel strip 16 is constantly monitored by a rotary encoder 49. That is, iron core steel I
The tension roller 45 increases or decreases depending on the amount of F1G being fed out.
moves vertically around the solid line position in Fig. 4, but the signal corresponding to the movement is transmitted to the rotary encoder 4.
9 to the control device 50 to control the rotation of the electric motor 41.
Since the drive is controlled so that the iron core steel strip 16 is kept at a constant tension and fed out, the iron core steel strip 16 is fed to the bobbin 5 and wound with a constant tension applied by the tension control device 11. It is passed around.

Therefore, the wound core 15 can be wound around the winding core 7 of the bobbin 5 with a constant winding force using the annealed iron core steel plate 16 that is fed out from the outer periphery of the winding portion of the delivery device 9. When the winding of the iron core steel strip 1G on the bobbin 5 is about half, the handle 27 of the winding device 4 is turned and the moving plate 26 is turned.
is moved to the left side in FIG. 2 using the elongated hole 28, and the presser roller 23 is separated from the bobbin 5. In this state, the winding of the core steel strip 16 is further continued, and when the core steel strip 16 is wound a predetermined number of times around the winding core 7 of the bobbin 5, the electric motor 22.41 is stopped. After that, by cutting the core steel strip 1G at the outer periphery of the bobbin 5, winding of the wound core 15 for one car is completed.
The production of wound core transformer 1 is completed.

When the winding of one wound core 15 is completed as described above, the cylinder device 33 is driven to move the movable base 17 to the right side of the figure as shown by the two-dot chain line in FIG. The wound core transformer 1 equipped with the wound core 15 just wound is moved to the position indicated by the two-dot chain line. Then, the core steel strip 16 fed out from the outer circumferential side of the delivery device 9 is wound in the same manner as described above, onto the bobbin 5 on which the coil 10 (not shown) has already been placed on the mounting table 14 via the tension control device 11. It is something to do. Since the winding operation is the same as described above, the explanation will be omitted.

The wound core transformer manufactured by winding the wound core 15 is removed from the mounting table 14 by loosening the nut 53.
Thereafter, the coil 10 with the bobbin rotatably inserted therein is mounted on the mounting table 14 to prepare for winding the next core.

In addition, FIG. 7 shows means for driving the movable base 17 in place of the cylinder assembly W33, in which the electric motor 55 and the electric motor 1
A screw shaft 56 connected to the rotating shaft of the fi 55, a bearing body 57 fixed on the base 3 and rotatably supporting the screw shaft 56,
A screw assembly 5 hanging below the movable table 17 and screwing together the screw shaft 56
8 and a microswitch 59.60 that is pushed by this screw assembly 58 to stop driving the electric motor 55. When the electric motor 8155 is rotated forward or reverse, the movable base 1
7 moves left and right in FIG. 7, and when the screw unit 58 presses either one of the microswitches 59 or 60, the movable base 17 is stopped and the winding device 4 on the movable base 17 is made to correspond to the feeding device 9. The present invention can also be achieved even if the wound core 15 is wound.

〔Effect of the invention〕

Since the present invention is configured as described above, it has the following effects.

(1) In the wound core transformer of the present invention, when winding the wound core,
A core steel strip made of amorphous magnetic thin material, which is wound to a large diameter and annealed, and is equivalent to multiple wound cores, is sequentially unwound from the outer circumference of the wound part, and a bobbin already equipped with a coil is drawn out. Since it is constructed by winding it around a core, as in the past, for example, an annealed steel core strip is fed out from the inner circumferential side of the winding part and then rolled around a core sleeve that is rotated by a drive belt. When unwinding, as in the case of winding,
There is no possibility that the iron core steel strip becomes entangled in a spiral shape or is damaged by the tensile action of the drive belt. The core steel strip, which is made of crystalline magnetic ribbon, is thin and brittle, so it can be unwound directly from the outer periphery of the winding part and wound directly onto the small diameter core of a rotating bobbin. Although it is thin and brittle, it does not break during winding, and it is possible to wind the core by fitting it easily onto a small diameter core.As a result, the amorphous magnetic ribbon It is possible to provide a wound core transformer with excellent core characteristics that fully takes advantage of the features of the present invention.

(2) The iron core steel strip wound around the bobbin is controlled by a tension control device so that a constant tension can always be applied after it is unwound from the delivery device, so it becomes extremely brittle due to annealing. It is possible to manufacture a wound core transformer without damaging the core steel strip, fully utilizing its characteristics, and stabilizing the space factor of the core.

(3) Furthermore, in the manufacturing apparatus of the present invention, in order to immediately manufacture the second and subsequent wound core transformers after manufacturing one wound core transformer, one iron core steel strip winding device is installed. The movable base is configured to be movable so that the winding device always corresponds to the delivery device, so that the winding of the annealed iron core steel strip can be done in advance. By preparing the amount that can be used as a single wound core transformer, preparations for manufacturing the next wound core transformer can be made in advance while one wound core transformer is being manufactured. It is possible to efficiently manufacture vessels and improve productivity.

[Brief explanation of drawings]

FIG. 1 is a front view showing a main part of a manufacturing apparatus for a wound core transformer according to the present invention in longitudinal section; FIG. 2 is a plan view of FIG. 1; FIG. Fig. 4 is an explanatory diagram of the operation of the tension control device, Fig. 5 is a partially cutaway perspective view of the wound core transformer, Fig. 6 is a perspective view showing the divided bobbin, and Fig. 7 is the winding device. FIG. 6 is a side view of a main part showing another embodiment of a driving means for a movable base with a movable table attached thereto. 1. Winding core transformer 5. Bobbin 9. Delivery device 10. 15. Winding core 4. Winding device 7. Winding core coil, 11. Tension side '41 device 16. Iron core steel strip.

Claims (3)

[Claims] (1) A bobbin with a flange plate at both ends of the winding core, a coil disposed from the hollow part of the winding core of this bobbin so as to span between the flange plates and surrounding the circumferential direction of the bobbin, and a coil wound to a large diameter. An iron core steel strip made of an amorphous magnetic thin ribbon that has been attached and annealed is drawn out from the outer periphery of the winding portion, and is wound around the winding core of the bobbin a predetermined number of times while applying a certain tension. What is claimed is: 1. A wound core transformer comprising: a wound core; (2) A delivery device equipped with a core steel strip that has been annealed by winding a large diameter amorphous magnetic ribbon equivalent to multiple winding cores; a tension control device for maintaining the iron core steel strip fed out from the outer peripheral side of the iron core steel strip by a feeding device at a tension suitable for winding the wound core; and an iron core to which a predetermined tension is applied by the tension control device. There is a winding device that winds the steel strip onto the winding core of a bobbin that is pre-equipped with a coil while rotating the bobbin, and a plurality of these winding devices are installed and these winding devices are sent out when winding the iron core steel strip. 1. An apparatus for manufacturing a wound core transformer, comprising a movable table that can be moved to a position corresponding to the apparatus. (3) A second feature, characterized in that the movable platform equipped with the plurality of winding devices is movable in a direction perpendicular to the direction in which the core steel strip is fed out by a drive source such as a cylinder device or an electric motor.
A manufacturing device for a wound core transformer as described in 2.