JPH1167566A - Manufacturing apparatus for wound core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a high quality wound core, using a thin belt sheet of amorphous alloy. SOLUTION: A laminate block is fed from a guide plate 30 around a winding frame M mounted on a main shaft 23, and the laminated block is turned and inserted into the inside of a non-edge belt 45 and turned around the winding frame M so as to form a wound core. A lap-clamping device 60 turned with the main shaft 23 for clamping the edge of the laminated block to the winding frame M, and a lap-holding device 70 for holding the edge of the laminated block to the winding frame M are provided. In addition, the end of the guide plate 30 is changed according to the rotation of the winding frame M in such a way that a vertical length between the corner part of the winding frame M or the laminated block wound around the winding frame M and the top end of the guide plate 30 is kept at an offset value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding core manufacturing apparatus for manufacturing a winding core from an amorphous magnetic alloy ribbon.

[0002]

2. Description of the Related Art Recently, amorphous magnetic alloys have been attracting attention as low-loss magnetic materials. When this material is used to construct iron cores for electrical equipment such as transformers,
Low-loss electrical equipment can be obtained. The amorphous magnetic alloy is provided in the form of a thin strip (thin strip) having a very small thickness (about 25 μ), and its handling is troublesome. It is advantageous to employ a wound iron core structure.

[0003] As a wound iron core using a silicon steel strip, a one-turn cut iron core is often used. When manufacturing a one-turn cut wound iron core, a steel strip cut to have a length slightly longer than one turn is sequentially wound around a circular bobbin, and a steel strip of each turn is formed. A method of manufacturing a circular wound core in which both ends are overlapped in a stepwise manner and then shaping the circular wound core into a rectangular shape and annealing the same.

However, as described above, since the amorphous magnetic alloy is very thin and the handling thereof is troublesome, a one-turn cut type structure is required when the wound core is formed by the amorphous magnetic alloy ribbon. If adopted, the core cannot be manufactured efficiently.

In view of this, a method has been adopted in which several or several tens of amorphous magnetic alloy ribbons are laminated as a unit laminate, and a wound core is formed using the unit laminate.
In this method, a large number of unit laminates whose length is sequentially increased by 2πt (t is the thickness of the unit laminate) are formed, and a single unit of the unit laminate or n unit laminates (n is 2) A block obtained by laminating each position in the longitudinal direction in ascending order of length from the above (integer) is referred to as a laminated block. The thus obtained m (m is an integer of 1 or more) laminated blocks are wound around a rectangular winding frame in ascending order of length, and both ends of each laminated block are overlapped and joined. Form a rectangular wound core.

FIG. 23 shows, as an example, the structure of the first laminate block B1 in the case where the number n of unit laminates in one laminate block is 3, in which the length is shortened from the actual length for convenience. In this example, in this example, the unit laminates U1 to U3 whose lengths are sequentially increased by 2πt (increase in the perimeter per turn) are shifted, and the positions are shifted in the longitudinal direction by the dimension ΔX to be stacked. This constitutes the laminate block B1. Similarly, three unit laminates U4, U5,... Are sequentially laminated to form a second laminate block B2,
B3,... An end Ba on one end side and an end Bb on the other end in the longitudinal direction of each laminated block are each formed in a stepped shape. The number of unit laminates may be different for each laminate block, and a single unit laminate may be a laminate block.

FIG. 24 shows the structure of a wound iron core formed by winding the laminated block constructed as described above around the winding frame M. In this example, the number m of laminated blocks is three. . The winding frame M is formed so that the profile of the cross section (the cross section orthogonal to the center axis) has a substantially rectangular shape. On the winding frame M, a laminate block B1 composed of unit laminates U1 to U3, a laminate block B2 composed of unit laminates U4 to U6, and a laminate block B3 composed of unit laminates U7 to U9 are sequentially wound. An end on one end side and an end on the other end side of each of the unit laminated bodies wound and wound are overlapped and joined on one short side of a rectangular winding frame M to form a wound core. Have been. In the present specification, a portion L where one end of the unit laminated body and one end of the other laminated body are overlapped and joined to each other is referred to as a wrap portion.

[0008] A steel strip S made of stainless steel or the like is wound around the outermost periphery of the wound core to maintain its shape. In this state, the whole is annealed, and the yokes Y1 and Y2 and the legs C1 and C are formed.
2 is completed.

In the case where a transformer for power distribution, for example, is constructed using this wound core, the steel strip S is removed to open the joint formed on the yoke portion Y1, the winding frame M is removed, and then the legs are removed. Windings are fitted into the parts C1 and C2, respectively. After the windings are fitted to the legs C1 and C2, the joint of the yoke Y1 is closed, a steel strip S is wound around the outermost periphery of the wound core, and both ends of the steel strip are welded.

Incidentally, the annealed amorphous magnetic alloy is in a very brittle state, and there is a possibility that fragments may be generated from the iron core when handling the winding. Therefore, when fitting the winding to the iron core,
Measures such as covering the core with a cover are taken.

Conventionally, as described above, a single unit laminated body or a predetermined number of unit laminated bodies are separated by a predetermined shift dimension Δ
A method of manufacturing a wound iron core by taking a laminate obtained by shifting the layers by X as a block in a laminated body and winding the laminated block around a winding frame M has been adopted. In the process of joining both ends, since manual work is required, work efficiency is poor, and the cost of the iron core cannot be avoided.

As a device for manufacturing a circular wound core, a manufacturing device as shown in FIG. 20 (Japanese Patent Publication No. 6-9180) is used.
No.) has been proposed. In this wound core manufacturing apparatus, a drive shaft 2 that can move along a long hole 1a provided in a frame 1 is provided, and a winding frame M 'is attached to the drive shaft 2. A guide flange 3 is provided on the drive shaft 2, and one end of the winding frame M ′ is in contact with the guide flange 3. The frame 1 also includes a pair of guide rollers 4 and 5 disposed close to each other at one end of the long hole 1a.
And fixed rollers 6 to 13 distributed around the drive shaft 2 and a tension applying device 17 provided with tension rollers 15 and 16 driven by a cylinder 14. The drive shaft 2 is urged toward one end (the guide rollers 4 and 5 side) of the elongated hole 1a by urging means (not shown). Reel M ', guide rollers 4 and 5, fixed roller 6
, And an endless belt 18 is passed over the tension rollers 15 and 16 in the illustrated order. The endless belt is always kept in tension by the action of the tension applying device 17.

A conveyor belt 19 for feeding the laminate block B between the guide rollers 4 and 5 is provided, and the laminate block B fed by the conveyor belt passes between the guide rollers 4 and 5. It is supplied between the endless belt 18 and the winding frame M '.

When manufacturing the wound core using the apparatus shown in FIG. 20, the winding frame M 'is driven to rotate in the direction of the arrow P shown in FIG. Supplies the laminate block B between the endless belt 18 and the winding frame M '. The laminate block B supplied between the endless belt 18 and the bobbin M ′ is
Is wound around the bobbin M 'while being constrained by, and both ends thereof are overlapped and joined. As the laminate block B is wound around the winding frame M ', the outer diameter of the iron core increases and the drive shaft 2 moves to the other end side (the left end side in FIG. 20) of the long hole 1a. Go.

[0015]

In the winding core manufacturing apparatus shown in FIG. 20, since the winding core is formed in a circular shape, FIG.
As shown in the above, when manufacturing a core having a rectangular cross-sectional profile in a rectangular shape, it is necessary to perform an operation of forming a circular core in a rectangular shape before annealing, which is troublesome. there were.

In the wound iron core, it is desirable that the wrapped portions L of the series of laminated blocks are distributed in a region W having a constant width, as shown in FIG.

However, when the laminated block B of the amorphous magnetic alloy ribbon is wound around the circular winding frame M 'by the winding core manufacturing apparatus shown in FIG. In the process of winding the block, the position of the wrap portion of the laminated block located on the outside is shifted from the position of the wrap portion of the laminated block located on the inside.
As shown in (B), a so-called “lap flow” state may occur in which the region W ′ where the lap portion L exists is developed obliquely. Even if the circular wound core in which the lap flow occurs is shaped into a rectangular shape, it is not possible to obtain a wound core in which the wrap portion is correctly distributed near the center of one yoke portion Y1 as shown in FIG.

In the winding core manufacturing apparatus shown in FIG. 20, instead of the circular winding frame M ', as shown in FIG.
It is also conceivable to use a rectangular winding frame M. In this case, in order to enable the rotation of the rectangular winding frame M, the interval between the guide rollers 4 and 5 is widened, and the short side and the long side of the rectangular winding frame M , 5 must be structured so that both guide rollers can escape greatly. However, if the guide rollers 4 and 5 are configured to largely escape, when the lap portion of the unit laminate passes between the escaped guide rollers 4 and 5, the ends of the joined unit laminates open outward. In this case, the end of the opened unit laminate (separated from the bobbin) abuts on the guide roller 4 via the belt, thereby preventing the bobbin from rotating.

Therefore, in the winding core manufacturing apparatus shown in FIG. 20, when a rectangular winding frame is used, manual work is added to prevent the wrapping portion from opening during the winding operation of the laminated block. This has made it impossible to efficiently manufacture wound iron cores.

In the case of using the winding frame M having a rectangular shape in the winding core manufacturing apparatus shown in FIG.
As shown in (A) to (C), the vertical distance (the distance measured in the vertical direction) between the delivery end of the conveyor belt 19 and the reel M is constantly changed with the rotation of the reel M. 21C, when the long sides of the bobbin M are oriented in the horizontal direction, the vertical distance between the delivery end of the conveyor belt 19 and the bobbin M is changed as shown in FIG. Is maximized. As described above, when the vertical distance between the delivery end portion of the conveyor belt 19 and the bobbin M becomes large, as shown in FIG. FIG.
As shown in (A) and (B), since the laminate block B is wound inside the endless belt in a state of being slackened, the slack portion of the wound laminate block becomes an amorphous magnetic alloy ribbon. If wrinkles occur and the winding is continued, the wrinkled portions of the amorphous magnetic alloy ribbon may be compressed and damaged. When the amorphous magnetic alloy ribbon breaks,
Since many pieces are generated from the iron core, when assembling electrical equipment such as transformers using the wound iron core, debris may adhere to the insulating part of the electrical equipment or may be mixed in the insulating oil. As a result, the insulation performance of the electric device may be reduced.

An object of the present invention is to make it possible to efficiently manufacture a wound core without causing a lap flow state, and to wind a laminated block into a rectangular shape without causing a large slack. It is an object of the present invention to provide a winding core manufacturing apparatus which can be turned to eliminate the possibility of breakage of an amorphous magnetic alloy ribbon inside an iron core.

[0022]

SUMMARY OF THE INVENTION An apparatus for manufacturing a wound iron core to which the present invention is applied is formed so that the profile of the cross section is substantially rectangular, and the center is supported by a main shaft whose axis is oriented in the horizontal direction. A winding frame, a winding frame driving device for rotating and driving the winding frame, and a part formed on the outer periphery of the winding frame in a state where the winding frame is formed outside the loop and the winding frame is positioned outside the loop. An endless belt guided along the orbit along the endless belt and driven by the rotation of the bobbin, and a single unit of a unit laminated body composed of a plurality of laminated amorphous magnetic alloy ribbons or n unit laminated units (N is an integer of 2 or more), each of which is laminated in a state where its position is shifted in the longitudinal direction, and one end side and the other end side in the longitudinal direction are each formed in a stepwise manner. Guide plate with one end facing the reel side A stack block supply device which sequentially feeds from the delivery end of the guide plate toward the reel while sliding on the guide plate to supply the reel to the reel. A plurality of laminated blocks are sequentially wound and laminated on a bobbin by winding the laminated blocks sequentially supplied by the supply device inside the endless belt, and one end and the other end of each wound laminated block. Is a device for manufacturing a wound iron core having a structure in which a lap portion is formed by being overlapped, and the orbit of the endless belt is
It is set so as to form a laminated block introduction portion for receiving an end on one end side in the longitudinal direction of the laminated block supplied by the laminated block supply device between the start point and the end point.

In the present invention, there is provided a lap pressing device for pressing the end of the laminated block supplied from the laminated block supplying device on the side of the laminated block introduction portion against the bobbin, and provided so as to rotate with the main shaft. And a wrap clamp device for clamping an end of the laminated block constituting the wrap portion to the bobbin.

In the present invention, when supplying the laminate block to be wound first on the bobbin, the top of the highest one of the four corner portions of the bobbin and the guide plate The delivery end of the guide plate is displaced following the rotation of the bobbin so as to maintain the vertical distance between the delivery end and the set value at the set value. When supplying the laminate block, the vertical direction between the highest corner of the four corners of the outermost laminate block wound on the bobbin and the delivery end of the guide plate. A guide plate displacement mechanism for displacing the delivery end of the guide plate following the rotation of the bobbin so as to keep the distance at the set value was provided in the laminate block supply device.

As described above, when the lap clamp device is provided so as to rotate with the main shaft and clamps the end of the laminated block constituting the wrap portion with respect to the bobbin, the laminated block is endlessly provided. Since the end of the laminate block does not move relative to the bobbin when wound around the inside of the belt and wound, it is possible to prevent the position of the wrap portion from being shifted, and to prevent wrap flow from occurring. Can be.

When the end of the laminate block is clamped to the winding frame as described above, the wrap portion does not open even when the laminate block is released from the endless belt. It is possible to prevent the wrap portion from opening when the short side and the long side of the rectangular winding form pass through the position of the laminate block introduction section.

Further, as described above, if a lap pressing device for pressing one end of the laminated block supplied to the laminated block introduction portion to the winding frame side is provided, the already wound laminated block is provided. The end on one end side of the laminate block newly supplied to the laminate block introduction portion can be clamped without opening the wrap portion of the body block.

Therefore, with the above configuration, a series of winding operations of a series of laminated blocks can be performed without opening the wrapped portion of the wound laminated block at all and without causing a positional shift of the wrapped portion. And a high quality wound iron core without lapping flow can be manufactured.

As described above, when the laminate block is placed on the guide plate and supplied to the reel while sliding on the guide plate, the vertical position between the delivery end of the guide plate and the reel is provided. The directional distance (the vertical distance between the delivery end of the supply base plate and the laminated block already wound on the bobbin if the preceding laminated block is wound on the bobbin) is As the size increases, a large slack occurs in the laminate block between the delivery end of the guide plate and the bobbin (or the laminate block already wound on the bobbin). If the slack of the laminated block supplied from the delivery end of the guide plate to the reel side becomes large, the laminated block is wound inside the endless belt in a state of being loosened. Wrinkles occur in the amorphous magnetic alloy ribbon at a portion, and if the winding is continued as it is, the wrinkled portion of the amorphous magnetic alloy ribbon may be compressed and damaged. When the amorphous magnetic alloy ribbon breaks, a large number of fragments are generated from the iron core.When electric devices such as transformers are assembled using the wound core, the fragments adhere to the insulating parts of the electric device. Or debris may be mixed into the insulating oil, thereby deteriorating the insulation performance of the electric device.

If the laminated block is slack in the iron core, the space factor in the iron core becomes uneven, which may adversely affect the characteristics of the electric device.

In order to prevent such a problem from occurring, it is necessary to minimize the slack generated in the laminate block when the laminate block is supplied from the guide plate to the reel.

Therefore, in the present invention, as described above, the guide block displacement mechanism is provided in the laminate block supply device, and when the laminate block to be wound first on the reel is supplied, the reel frame is supplied. The delivery end of the guide plate is adjusted so that the vertical distance between the top of the highest corner of the four corners and the delivery end of the guide plate at a set offset value. When supplying the next laminate block to the outer periphery of the outermost laminate block already wound on the bobbin, the outermost laminate wound on the bobbin is displaced following the rotation. The output end of the guide plate is made to follow the rotation of the bobbin so that the vertical distance between the top of the corner at the highest position of the block and the output end of the guide plate is maintained at the set offset value. It was made to be displaced.

The top of the corner portion means the top of the corner portion, that is, the outermost portion (the intersection of the outline of the cross section of the corner portion and the diagonal of the rectangle) of each portion of the corner portion. I do. The height at the top of the corner means the vertical height of the corner. Similarly, the height of the sending end of the guide plate means the vertical height of the sending end.

With this configuration, the vertical distance between the sending end of the guide plate and the outer periphery of the bobbin (the next lamination block is supplied to the outer perimeter of the lamination block already wound around the bobbin) In such a case, the vertical distance between the delivery end of the guide plate and the outer periphery of the laminated block already wound on the bobbin) is always kept to the minimum necessary size, Can be supplied to the bobbin side, so that the lamination that occurs in the laminar block when the laminating block moves from the guide plate to the bobbin side is reduced, and the laminating block remains in a state where a large slack is generated. Can be prevented from being caught in the inside of the endless belt, and the amorphous magnetic alloy ribbon can be prevented from being wrinkled in the wound iron core and damaged.

In order to displace the delivery end of the guide plate as described above, for example, the guide plate is rotated about one rotation center set on the rear side in the supply direction of the laminated block. It is provided to obtain. Then, when supplying the first laminated body block to the bobbin, the height of the top of the corner portion at the highest position among the four corner portions of the bobbin is calculated and already wound around the bobbin. When supplying the laminated block to the outer periphery of the laminated block, the height of the top of the highest corner of the four corners of the laminated block already wound on the bobbin is calculated. A feeding end of the guide plate, wherein a height obtained by adding the offset value set to the height of the top of the corner calculated by the corner height calculating means and the target height is used as a target height. Motor rotation amount calculation means for calculating the rotation direction and rotation angle of the motor required to maintain the height of the section at the target height, and the rotation angle calculated in the rotation direction calculated by the motor rotation amount calculation means Electric motor just to rotate the motor Providing a motor control device for controlling.

As described above, the four corner portions of the bobbin (when the first laminated block is wound around the bobbin) or the four corner portions of the laminated block already wound around the bobbin (wound portion). When the next laminated block is wound around the outer periphery of the laminated block already wound around the frame), the height of the top of the highest corner is calculated, and the calculated corner is calculated. The height obtained by adding a constant offset value to the height of the top of the as a target height, the motor is controlled so as to maintain the height of the sending end of the guide plate at the target height, The delivery end of the guide plate is automatically displaced following the rotation of the bobbin, so that the top of the highest position of the corner portion of the bobbin or the laminated block wound on the bobbin and the guide plate Set the vertical distance to the sending end to the minimum required (offset ) To keep, it is possible to prevent the large slack occurs in the laminate block the transition from the guide plate on the winding frame side.

In the present invention, a strip-shaped plate is provided so as to extend from the tip of the guide plate to a position near the upper part of the main shaft, and supports the laminated block existing between the delivery end of the guide plate and the bobbin from below. Preferably, a spring is mounted on the delivery end of the guide plate. In this case, the leaf spring is formed so as to have a width smaller than the width of the laminated block, and is arranged along the center in the width direction of the laminated block.

If the above-mentioned leaf spring is attached to the delivery end of the guide plate, the slack generated in the laminated block can be further reduced, so that the laminated block is wrapped in a loose state. Can be reliably prevented.

The lap holding device is provided so as to be displaceable in a direction perpendicular to the axis direction of the main shaft at the laminated block introduction portion, and abuts on one end of the laminated block in the laminated block introduction portion. It is provided so as to be able to be displaced between a pressing position in which the end of the one end is in contact with the end of the bobbin and a retracting position in which the end of the one end is separated from the end of the one end to allow rotation of the bobbin. And a pressing member drive mechanism for displacing the pressing member between the pressing position and the retreat position.

The lap clamp device is provided so as to be movable in a first direction along the radial direction of the main shaft, and is also provided so as to be movable in a second direction along the axial direction of the main shaft. When displaced toward the bobbin side along the first direction while being displaced to a position facing the outer peripheral surface of the bobbin along the second direction, the laminate block on the bobbin when displaced toward the bobbin side along the first direction A clamp plate provided so as to abut against the end portion and clamp the end portion to the reel, and to release the clamp of the end portion when the end portion is moved away from the reel along the second direction; And a first clamp plate driving mechanism for displacing the clamp plate along the first direction, and a second clamp plate driving mechanism for moving the clamp plate in the second direction.

In this case, the endless belt is formed so as to have a width smaller than the width of the laminate block, is disposed along the center in the width direction of the laminate block, and is provided with a clamp of the lap clamp device. The plate is provided so as to abut on a portion near the widthwise end of the end of the laminated block which does not interfere with the endless belt when in the clamp position, and clamps the end.

As described above, if the clamp plate of the lap clamp device is displaced in the axial direction (second direction) of the main shaft so as to be detachable from the laminate block, the laminate block is moved to the endless belt. After wrapping around the inside of the laminate block to overlap the end on one end and the end on the other end to form a wrap portion, the wrap portion is restrained by an endless belt, and then the wrap portion is removed. The wrap portion can be clamped again by once removing the clamp plate sandwiched between the ends of the laminated block to be constituted from the laminated block. By clamping the wrap portion in this way, it is possible to prevent the wrap portion from opening when the wrap portion is released from the endless belt.

Further, as described above, the lap pressing device for pressing the one end of the laminated block supplied to the laminated block introduction portion toward the bobbin side is provided, and the clamp plate of the lap clamp device is connected to the main shaft. If the laminate block is displaced in the axial direction (second direction) and can be separated from the laminate block, when a new laminate block is supplied to the laminate block introduction portion, the laminate block is removed. The clamp plate can be released while the end is pressed against the bobbin side to clamp the end of one end of the new laminated block, so that the wrap of the already wound laminated block is opened. Without this, the end on one end side of the newly supplied laminate block can be clamped by the lap clamp device.

At both ends in the axial direction of the reel, a pair of face plates are provided so as to rotate with the reel and regulate the position of the laminated block on the reel in the width direction. Is preferred.

Providing a pair of face plates in this way makes it possible to align the positions in the width direction of the laminated blocks wound on the bobbin, so that a series of laminated blocks can be wound neatly. As a result, it is possible to obtain a high-quality wound core without displacement of the laminate block.

In the present invention, control for controlling the reel driving device, the laminate block supply device, the pressing member driving mechanism of the lap pressing device, and the first and second clamp plate driving mechanisms of the lap clamp device. Preferably, further devices are provided.

This control device performs a laminate block supply operation of supplying the end on one end side of the laminate block through the laminate block introduction portion to a position facing the outer periphery of the bobbin, and one short side portion of the bobbin. A pressing operation of pressing the end on one end side of the laminated block supplied to the position of the laminated block to the bobbin by the pressing member of the wrap pressing device, and an end portion on one end side of the laminated block pressed by the pressing member The end of the laminated body is clamped by bringing the clamp plate of the lap clamp device into contact with the end of the laminate, and the wrap is moved to the retracted position by displacing the holding member to allow the rotation of the bobbin. Pressing and retracting operation, rotating the bobbin, winding the laminated block whose one end is clamped into the inside of the endless belt, and superimposing the other end on the one end of the laminated block To match After forming the wrap portion, the laminate block winding operation of stopping the bobbin while the wrap portion is positioned inside the endless belt, and one end of the wrap portion of the laminate block, A clamp plate detaching operation of displacing the clamp plate sandwiched between the other end and the end of the clamp plate along the second direction away from the bobbin and detaching the clamp plate from the wrap portion; Lap portion clamping operation of contacting the clamped plate with the outer peripheral side of the wrap portion and displacing the lap portion to a position where the wrap portion is clamped with respect to the winding frame; The winding frame returning operation of rotating and stopping the frame is repeated until a required number of stacked blocks are wound.

It is preferable that a pair of the above wrap clamp devices is provided, and the pair of wrap clamp devices are respectively disposed on both sides in the axial direction of the bobbin. In this case, the lap retainer
In order not to interfere with the clamp plate of the lap clamp device,
It is preferable to provide the laminated block at the position near the center in the width direction of the laminated end of the laminated block at the laminated block introduction portion so as to contact the laminated end.

In the case where a pair of lap clamp devices and a pair of face plates are provided, cut-out portions which are aligned with each other are provided at portions where the clamp plates of the clamp device of the pair of face plates are arranged, so that a pair of notches is provided. It is preferable to displace each clamp plate of the lap clamp device through the cutout of the face plate.

As described above, if a pair of lap clamp devices are provided, the end of the laminated block can be stably clamped at both ends in the width direction. Therefore, the laminated block is placed inside the endless belt. In the process of winding and winding,
A stable operation can be performed by preventing the clamp from coming off.

In the present invention, the first ironing roller which contacts the endless belt near the end point of the orbital track and presses the endless belt toward the bobbin side, and an intermediate portion between the start point and the end point of the orbital track. It is preferable to provide a second ironing roller that contacts the endless belt and presses the endless belt toward the reel.

In this case, the first and second ironing rollers are:
It is supported so that it can be displaced following the rotation of the bobbin, and is biased toward the bobbin side by a biasing means.

The first and second ironing rollers are provided in the first
When the second ironing roller faces one of the two corners at the diagonal positions of the winding frame, the second ironing roller is moved to the second corner.
It is preferable to provide it so as to face the other of the two corners.

When the ironing roller is provided as described above, the endless belt can be brought into close contact with the winding frame or the laminated block already wound without causing the endless belt to be loosened. By winding the blocks densely, it is possible to obtain a high-quality wound iron core having no gap between the laminate blocks.

Further, in the present invention, the starting point of the orbit of the endless belt makes contact with the laminated block wound inside the endless belt, and urges the laminated block to be pressed against the reel. It is preferable to further provide a spring.

By providing a spring in this way, when a new laminate block is wound inside the endless belt, the laminate block can be prevented from being lifted up, so that the laminate block can be easily wound. Can be made.

In the present invention, it is also preferable to provide a friction applying member that applies friction to the laminate block wound inside the endless belt by frictionally contacting the laminate block at the laminate block introduction portion.

[0058]

1 to 14 show an example of the configuration of a wound iron core manufacturing apparatus according to the present invention. FIG. 1 is a front view showing the overall configuration, and FIG. FIG. 3 is a perspective view showing a main part of FIG. 1, FIG. 4 to FIG.
FIG. 4 is a perspective view showing the operation of the wound iron core manufacturing apparatus according to the present invention in order.

In FIG. 1, reference numeral 21 denotes a main frame of a wound iron core manufacturing apparatus which is formed in a plate shape and arranged in an upright state. The main frame 21 is connected to legs 21a, 21a attached to its lower part. And is fixed on an installation base (not shown). A main shaft 23 is rotatably supported at a position near the distal end portion 21A of the main frame 21 with its central axis orthogonal to the plate surface of the frame 21 and oriented in the horizontal direction. M is attached. The winding frame M is formed such that the outline of the cross section thereof has a substantially rectangular shape (a shape in which each corner of the rectangle is rounded), and the center axis of the winding frame M coincides with the center axis of the main shaft 23. Installed. Although not shown, a bobbin driving device that rotationally drives the main shaft 23 via a speed reducer by an electric motor is provided on the back surface of the main frame 21, and the bobbin M is rotationally driven by this bobbin driving device.

As shown in FIG. 4, a pair of face plates 25, 25 arranged so as to sandwich the winding frame M from both ends in the axial direction are attached to the main shaft 23. A pair of face plates 2
Of the 5, 25, the face plate 25 arranged on the opposite side to the main frame 21 is detachable, and the bobbin M can be attached and detached with the face plate 25 removed. Has become. The U-shaped notches 25a, 25a are formed in the face plates 25, 25 so as to be aligned with each other. As shown in FIG. 7, each notch 25a has opposite sides 25a1, 25 extending in a direction parallel to the radial direction of the face plate 25.
a1 and a bottom 25a2 extending in a direction perpendicular to the radial direction of the face plate 25, and the bobbin M has one short side along the bottom 25a2 of the notch 25a. Installed with. The wrap portion of the laminated block constituting the wound core is arranged on one short side of the winding frame M along the bottom 25a2 of the cutout portion 25a.

The main frame 21 (see FIG. 1) is also provided with a laminate block supply device 26. The laminate block supply device 26 is provided at the rear end 2 of the main frame 21.
Movable frame 2 extending from 1B side toward reel M side
7 is provided. The movable frame 27 is stacked by a guide mechanism including two arc-shaped grooves 28a and 28b having the same arc center and rollers (not shown) guided and rolled by the arc-shaped grooves. The body block is supported so as to be rotatable around a point set on the rear side in the feeding direction. The main frame 21 is also provided with an electric motor 29a and a gear reducer 29b for reducing the rotation of the output shaft of the electric motor while being positioned below the movable frame 27. One end of a first lever 29c is connected to the output shaft of the speed reducer 29b, and one end of a second lever 29d is connected to the other end of the first lever 29c via a pin. The other end of the second lever 29d is the movable frame 2
7, and the movable frame 27 is rotated with the rotation of the output shaft of the electric motor 29a.

The movable frame 27 is provided with a guide plate 30 extending in the longitudinal direction of the movable frame 27 and a laminate block feeding mechanism 31. The guide plate 30 is provided for mounting and supporting the laminated block B fed to the reel M side, and the tip facing the reel M side has a delivery end portion 30A of the laminated block (FIG. 4). The end 30A is provided so as to reach the vicinity of the bobbin M between the face plates 25, 25. 4 to 14, a slit 30a extending in the longitudinal direction is formed at the center of the guide plate 30 in the width direction.

The stacked block feeding mechanism 31 includes an upper clamp 31A mounted on a movable block 31a which is disposed above the guide plate 30 and is movably supported in the longitudinal direction of the guide plate 30; A lower clamp 31B attached to a movable block 31b disposed below and supported so as to be displaceable in the same direction as the movable block 31a, a motor 31C, and a movable block provided to extend in the longitudinal direction of the guide plate. A ball screw 31D screwed to a nut fixed to the base 31a.

The movable block 31a and the movable block 31
b is connected by means (not shown) so as to displace the upper clamp 31A and the lower clamp 31B, which are respectively supported, in conjunction with each other.

The output shaft of the motor 31C is connected to a ball screw 31D via a power transmission mechanism 31E such as a chain sprocket mechanism, and the ball screw 31D is driven to rotate by the motor 31C, and the movable blocks 31a and 31
upper clamp 31A and lower clamp 31B together with b
Is reciprocated in the longitudinal direction of the guide plate 30.

Upper clamp 31A and lower clamp 31
B includes a clamp member vertically opposed through the slit 30a of the guide plate 30, and a fluid pressure cylinder for driving the clamp member. When feeding the laminate block B, the clamp member of the upper clamp 31A is brought into contact with the upper surface of the laminate block B supplied on the guide plate 30, and the clamp member of the lower clamp 31B is
The laminate block B on the guide plate 31D is clamped by contacting the lower surface of the laminate block B through Oa. In this state, by driving the motor 31C and rotating the ball screw 31D, the upper clamp 31A and the lower clamp 31B are displaced, and the laminated block B
Are sequentially sent out from the sending end (end on the winding frame side) 30A of the guide plate 30 to the winding frame M side to be fed. In this example, the movable frame 27, the guide plate 30, and the laminate block feeding mechanism 31 constitute a laminate block supply device 26, and the electric motor 29a, the speed reducer 29b, and the levers 29c and 29d form the guide plate. A displacement mechanism 29 is configured.

At the tip of the movable frame 27, an arm 3
2 is rotatably supported, and at the tip of the arm 32,
A friction applying member 33 that comes into frictional contact with the laminated block B wound around the winding frame M and applies frictional resistance to the laminated block B
(See FIG. 2) is rotatably mounted. The friction applying member 33 is made of a plate (weight) having a predetermined mass. A cylinder 34 is provided for driving the arm 32. By driving the cylinder 34, the friction applying member 33 is brought into contact with the laminate block on the bobbin between the face plates 25, 25, and It can be displaced to an evacuation position that is separated from the body block.

The main frame 21 also has first and second guide rollers 40A and 40A arranged vertically below and below the vicinity of the leading end of the laminated block supply device 26.
0B and a second plane with respect to a vertical plane including the central axis of the main shaft 23.
A third guide roller 40C arranged symmetrically with the first guide roller 40B, fourth and fifth guide rollers 40D and 40E arranged side by side directly above the third guide roller 40C, and a fifth guide roller A sixth guide roller 40F, which is located above 40E and higher than the face plates 25, 25 ';
A seventh guide roller 40G disposed above the bobbin M while being positioned at the same height as F is attached. Third to fifth guide rollers 40C to 4C
0E are arranged so as to be arranged in the vertical direction at a small interval, and are located between a vertical plane including the center axis of these guide rollers and a vertical plane including the center axis of the first and second guide rollers 40A and 40B. The slider 41 is arranged in a state where the slider 41 is moved. The slider 41 is supported so as to be able to slide horizontally along parallel guide bars 42 fixed to the main frame 21. The slider 41 includes a first tension roller 43A disposed at a position corresponding to a gap between the third and fourth guide rollers 40C and 40D, a fourth guide roller 40D and a fifth guide roller 40E. And a second tension roller 43B arranged at a position corresponding to the gap between the second tension roller 43B and the second tension roller 43B.
A piston rod of an air cylinder 44 attached to the main frame 21 is connected to the slider 41, and the cylinder 41 biases the slider 41 in a direction away from the third to fifth guide rollers 40C to 40E. ing.

The first and second guide rollers 40A and 40A
0B, a third guide roller 40C, a first tension roller 43A, a fourth guide roller 40D, a second tension roller 43B, and a fifth guide roller 40E.
And sixth and seventh guide rollers 40F and 40G,
An endless belt (endless belt) 45 formed in a loop shape is wound around the outer periphery of the winding frame M.

The endless belt 45 is provided so that a part thereof extends along most of the outer periphery of the winding frame M in a state where the winding frame M is positioned outside the loop. In the illustrated example, the third to fifth guide rollers 40C to 40E, the slider 41 and the first and second tension rollers 43A and 43
B and the cylinder 44 constitute a tension applying device (accumulator) 46. The tension applying device applies tension to the endless belt 45, and the endless belt 45
Alternatively, the laminate block B is held close to the outer periphery of the laminate block B wound around the reel. In this specification, the trajectory R of a portion of the endless belt 45 along the outer periphery of the bobbin M is
(See FIG. 2) is called an orbit of the endless belt.

As shown in FIGS. 4 to 14, the endless belt 45 is formed so as to have a width smaller than the width of the laminated block B wound around the winding frame M. M and the laminated block wound around the winding frame M are arranged along the center in the width direction. Therefore,
When the endless belt 45 is in contact with the outer periphery of the laminated block B wound around the outer periphery of the bobbin M, portions that do not contact the endless belt are left at both ends in the width direction of the laminated block. .

On both sides of the main shaft 23, a first ironing roller support arm 51A and a second ironing roller support arm 51B formed in a U shape are arranged. The first ironing roller 51A is provided on the laminate block supply device 26 side, and is rotatably supported by the main frame 21 via a pin 52A. The second ironing roller 51B is disposed on the opposite side of the laminate block supply device, and
It is rotatably supported by the main frame 21 via 2B.

The first ironing roller support arm 51A and the second ironing roller support arm 51B are provided such that their respective ends approach the reel M through the space between the face plates 25, and move away from the reel M. First and second ironing rollers 5 attached to respective tips
3A and 53B are brought into contact with the endless belt 45.

The main frame 21 has first and second air cylinders 54A and 54A as urging means for urging the first and second ironing roller support arms 51A and 51B.
B are rotatably supported, and these air cylinders 54A
And 54B are respectively connected to the intermediate portion of the first ironing roller support arm 51A and the intermediate portion of the second ironing roller support arm 51B via pins. A first ironing roller 51A and a second ironing roller 5 are provided by first and second air cylinders 54A and 54B.
1B is urged toward the bobbin M side.

In the illustrated core manufacturing apparatus, the supply device 26
When supplying the laminate block B onto the winding form M from FIG.
As shown in (5), the long side of the bobbin M is vertically aligned, and the bobbin M is stopped with one short side of the bobbin M facing upward. The stop position of the bobbin M at this time will be referred to as a stack block receiving position of the bobbin.

In the illustrated example, when the winding frame M is stopped at the stack block receiving position, the portion rising from the winding frame M of the endless belt 45 toward the seventh guide roller 40G extends in the vertical direction. , The position of the seventh guide roller 40G is set. When the first ironing roller 51A is in a state where the long sides of the bobbin M are arranged along the vertical direction, the upper ends of the long sides of the bobbin M on the side of the laminate block supply device 26 It is provided so as to come into contact with the endless belt 45 near the portion. Further, when the second ironing roller 51B is disposed such that the long side of the winding frame M is arranged along the vertical direction,
The reel M is provided so as to come into contact with the endless belt 45 in the vicinity of the lower end of the long side portion on the side opposite to the laminate block supply device 26.

In the illustrated example, during the rotation of the bobbin M,
When the first ironing roller 51A contacts one end of the winding frame M and comes into contact with the endless belt, the second ironing roller 5A
1B is opposed to the corner facing the first ironing roller and the other corner at the diagonal position and contacts the endless belt, and as shown in FIG. 1 and FIG. When the first ironing roller 51A and the second ironing roller 51B are in the position, the first ironing roller 51A and the second ironing roller 51B contact the endless belt at a position near the end of the different long side of the winding frame M. Is provided.

In the illustrated example, the seventh guide roller 40G
And the first ironing roller 53A, and the second ironing roller 5
3B, the orbit R along the outer periphery of the winding frame M of the endless belt 45 is determined. The orbit R is formed by the endless belt 45 descending from the seventh guide roller 40G to the bobbin M side, the bobbin M or the laminate block B wound around the bobbin M.
The point in contact with is the starting point P (see FIG. 2), and the endless belt 4
Reference numeral 5 denotes a trajectory having an end point Q at a position where it is separated from between the first ironing roller 53A and the bobbin M or the laminate block B wound around the bobbin M. The endless belt 45 is urged by the cylinder 54A and functions as a first ironing roller 53A which comes into contact with the endless belt near the end point Q of the orbit R, and the starting point P of the orbit R urged by the cylinder 54B. By the action of the second ironing roller 53B that comes into contact with the endless belt near the intermediate portion between the end point Q and the endless belt, the vehicle always runs while being pressed against the reel M side.

When the winding frame M is rotated, the distance between the contact point between the first ironing roller 53A and the endless belt 45 and the main shaft 23, and the contact point between the second ironing roller 53B and the endless belt 45 and the main shaft 23, and the first and second ironing rollers 5 follow the change in these distances.
The positions of 3A and 53B change. As described above, the positions of the first and second ironing rollers change following the rotation of the bobbin M, thereby allowing the bobbin M to rotate smoothly.

Between the start point P and the end point Q of the orbit of the endless belt 45 along the winding frame M, a laminated block introduction portion (portion where the endless belt is opened) G is formed. The laminate block B is supplied to the bobbin M through the introduction portion G.

The face plates 25 provided on both sides of the bobbin M
Is mounted with a pair of lap clamp devices 60, 60 for clamping an end (an end forming a wrap portion) on one end side of the laminated block on the bobbin M. As shown in FIGS. 2 and 3, each lap clamp device 60 is configured such that the face plate 25 is arranged in a state in which the longitudinal direction is along the bottom 25 a 2 of the notch 25 a of the face plate 25 and one short side of the bobbin M. Is provided with a rectangular movable plate 61 disposed outside the movable plate 61. Movable plate 6
1 is moved in a first direction (vertical direction in the illustrated example) along the radial direction of the main shaft 23 by a pair of guide rails 62, 62 arranged so as to face in the vertical direction and fixed to the outer surface of the face plate 25. The sliders 63 are fixed to the upper ends of freely supported sliders 63.

At the center of the lower surface of the movable plate 61, a clamp plate 64 is supported via a guide mechanism 65 so as to be movable in a second direction along the axial direction of the main shaft 23. The guide mechanism 65 is a known mechanism including a guide rail and a slider slidably held on the guide rail.

The clamp plate 64 is a plate having a minimum thickness necessary to secure the mechanical strength required for clamping one end of the laminated block, and is shown in FIGS. As can be seen in FIG.
4 is tapered so that the thickness of the clamp plate becomes thinner toward the winding frame M side.

The clamp plate 64 is provided so that its plate surface extends along one short side of the winding frame M, and moves along the first direction along the radial direction of the main shaft with the displacement of the movable plate 61. And is displaced in the second direction along the axial direction of the main shaft 23 by the operation of the guide mechanism 65. This clamp plate 64
Wound along the first direction (radial direction of the main shaft) while being displaced along the second direction (axial direction of the main shaft) to a position facing the outer peripheral surface of one short side of the winding frame M. When displaced toward the frame, the laminated block B on the winding frame M comes into contact with one end of the one end side of the stacked body block B and clamps the one end of the stacked body block B with respect to the winding frame M in the second direction (spindle). (In the axial direction), the clamp at the end on one end is released when it is moved away from the bobbin.

The clamp plate 64 is moved in the first direction along the main shaft radial direction.
The piston rod 66a of the first lap clamp driving air cylinder 66 (see FIGS. 2 and 3) is connected to the movable plate 61 in order to displace the movable plate 61 in the direction shown in FIG. Further, in order to displace the clamp plate 64 along the second direction along the axial direction of the main shaft, the second plate fixed to the lower surface of the movable plate 61
The piston rod 67a of the lap clamp driving air cylinder 67 is connected to the clamp plate 64 via the connecting member 68 (see FIG. 3). The movable plate 61, the guide rails 62, 62, the sliders 63, 63, and the first lap clamp driving air cylinder 66 constitute a first clamp plate driving mechanism for moving the clamp plate 64 in the first direction. Have been. The guide mechanism 65 and the second lap clamp driving air cylinder 67 constitute a second clamp plate driving mechanism for moving the clamp plate 64 in the second direction. 2
Lap clamp device 6
0 is configured. Since each lap clamp device 60 is attached to the face plate 25, the lap clamp device 60 rotates together with the bobbin M when the main shaft 23 is rotationally driven, and clamps or unclamps the laminate block on the bobbin M.

[0086] The laminate block introduction section G is also provided with a lap pressing device 70 for pressing one end of the laminate block supplied to the laminate block introduction section toward the bobbin side. The lap holding device 70 includes an air cylinder 72 attached to a cylinder attachment plate 71 fixed to the main frame 21 at a position corresponding to the laminated body block introduction portion G with the piston rod 72a facing downward, A pressing member 73 is fixed to the lower end of the piston rod 72a of the cylinder 72. Air cylinder 72
Is provided in a state where the piston rod 72a is directed toward the center in the width direction of the outer peripheral surface of the bobbin M on a vertical plane including the center axis of the main shaft 23, and the pressing member 73 is provided with the air cylinder 72.
To contact the wrap portion of the laminate block B at the laminate block introduction portion G, and
The pressing position and the winding frame M
Between the main shaft 23 and the retreat position where the rotation of the main shaft is permitted.
Are displaced along a direction perpendicular to the axial direction of In this example, a pressing member driving mechanism for displacing the pressing member 73 between the pressing position and the retreat position by the air cylinder 71 is configured.

In the illustrated example, the seventh guide roller 4
A pair of half-moon-shaped springs 80, 80 are provided on the shaft that supports 0G and contact the laminated block B on the bobbin M on both sides in the width direction of the endless belt 45.

In the illustrated example, the main shaft 23, a bobbin M attached to the main shaft, a bobbin driving device for driving the bobbin M by rotating the main shaft, and an endless guide guided by guide rollers 40A to 40G. The belt 45, the lap clamp device 60, and the lap press device 70 constitute a wound core winding device.

In this embodiment, as shown in FIGS. 4, 18 and 19, the guide plate 30 is provided so as to extend from the delivery end (tip) 30A to a position near the upper portion of the main shaft of the bobbin M. A band-shaped leaf spring 9 that supports a laminated block existing between the delivery end of the guide plate 30 and the bobbin M from below.
0 is attached to the delivery end 30A of the guide plate 30. The leaf spring 90 is formed so as to have a width smaller than the width of the laminated block so as not to interfere with the clamp plate 64, and is arranged along the center in the width direction of the laminated block. I have. When the bobbin M is stopped at the stack block receiving position (the position where the short side of the bobbin on which the wrap portion of the iron core is disposed is oriented horizontally) when the bobbin M is stopped. The part 90a is the reel M
Is provided so as to be in the vicinity of the center of the short side. Accordingly, when the leading end of the laminated block B is supplied from the sending end of the guide plate 30 onto the short side of the bobbin M, the leaf spring 90 moves to the leading end of the laminated block and the short side of the bobbin M. And is placed between them. Clamp plate 64
When the bobbin M is rotated after clamping the leading end of the laminate block, the short side of the bobbin M moves away from the leaf spring 90 as shown in FIG. It comes off from between the tip of the block and the bobbin.

The leaf spring 90 has such a spring force that it does not bend significantly when supporting the laminated block B existing between the sending end of the guide plate 30 and the winding frame. When the bobbin starts to rotate in a state of being sandwiched between the laminate block and the bobbin M, the bobbin is naturally bent with the rotation of the bobbin so as not to hinder the rotation of the bobbin. In addition, the spring force is set to an appropriate strength.

If the position of the delivery end 30A of the guide plate 30 is fixed when the laminate block B is wound around the bobbin M, the long side of the bobbin M faces the horizontal direction, and When the vertical distance between the sending end 30A of the plate and the outer periphery of the bobbin becomes large, the lamination of the laminate block becomes large, so that the laminate block is wrapped inside the endless belt in a state where it is still loose. As a result, the amorphous magnetic alloy ribbon may be wrinkled at the slack portion of the laminate block, and the ribbon may be damaged.

For this reason, in the present invention, a guide plate displacement mechanism 29 is provided in
As shown in FIGS. 17 (A) to 17 (D), the top of the highest corner portion and the guide plate 3 among the four corner portions of the winding frame M or the laminated block wound around the winding frame.
The height of the guide end of the guide plate 30 is displaced by following the rotation of the bobbin so as to maintain the vertical distance from the zero feed end 30A at a constant offset value Δh. That is, when supplying the laminated body block to be wound first on the reel M, the top of the highest corner among the four corners of the reel and the delivery end 30A of the guide plate 30 are connected. The dispensing end 30A of the guide plate 30 is displaced following the rotation of the bobbin M so as to maintain the vertical distance between them at the set offset value Δh. When supplying the laminate block to the outer periphery of the block, the top of the highest corner of the four corners of the outermost laminate block wound on the bobbin and the delivery end of the guide plate The delivery end of the guide plate 30 is displaced by following the rotation of the bobbin so as to keep the vertical distance between the guide plate 30 and the offset value Δh.

FIG. 16 shows a change in the height of the top of each corner of the rotating bobbin. In this example, as shown at the left end of FIG. It is assumed that the bobbin has a complete rectangular cross-sectional shape and does not have the bobbin, and the bobbin is rotated in a counterclockwise direction (the direction of arrow UC). M1 at the left end in FIG. 16 shows a state in which the long side of the bobbin is oriented vertically (a state in which the end of the laminate block is supplied to the bobbin), and M2 is a state in which the bobbin is in the state of M1. It shows a state where it is rotated 90 degrees counterclockwise. The sine waveforms a, b, c, and d shown on the right side of FIG. 16 indicate changes in the height position of the four corner portions a, b, c, and d of the bobbin. The state of M1 shown in FIG. 16 (the state in which the bobbin is at the stacking block receiving position) is the state at the start, and the angle between the straight line connecting the corner a of the bobbin and the center O of the main shaft with the horizontal line is α. When the rotation angle of the bobbin is θ (0 ≦ θ ≦ 90 °) and the distance from the center of the bobbin to each corner is a corner radius R, the height of the corner a measured from the center O of the main shaft 23 h
Is given by the following equation.

H = R sin (α + θ) (1) Also, when an angle between a straight line connecting the center O of the winding frame and the corner b in the state of M2 shown in FIG.
The height h of the corner b is given by the following equation.

H = R sin (β + θ) (2) When rotation of the bobbin starts from the state of M1 shown in FIG. 16, while the bobbin rotates in the first 90-degree section, the corner a Is at the highest position, and during rotation in the next 90-degree section, the corner b is at the highest position. That is, every time the bobbin rotates 90 degrees, the corner portion at the highest position is a
→ b → c → d → a ... Therefore, the locus of the corner portion at the highest position at each moment is as shown by a solid line on the right side of FIG. In the section from the point P1 to the point P2 shown in FIG.
In the section from the point P2 to the point P1, the height h at the top of the highest corner is h = R sin
(Β + θ).

When the next laminate block is wound around the outer periphery of the preceding laminate block wound on the former, the former is already wound around the former at a distance from the center of the former to the top of the corner. The radius of the corner R in the equation (1) or (2) may be obtained by adding the thickness of the corner of the laminated block.

In the present invention, the height h + Δh obtained by adding a constant offset value Δh to the height of the top of the corner at the highest position is set as the target height of the delivery end portion 30A of the guide plate 30, and Delivery end 30 of plate 30
In order to make the height of A coincide with the target height, the electric motor 29a
By controlling the rotation of the guide plate, the delivery end 30 of the guide plate is controlled.
The vertical distance between A and the top of the highest corner is maintained at a constant offset value Δh. And
When the vertical distance between the delivery end portion 30A of the guide plate 30 and the corner portion at the highest position of the bobbin is equal to the offset value Δh in a state where the laminate block is not mounted on the leaf spring 90. In order to reduce the vertical distance between the tip of the leaf spring 90 and the upper short side of the bobbin M at the stack block receiving position to zero or a sufficiently small value,
The magnitude of the offset value Δh is set.

A control device for controlling the guide plate displacement mechanism 29 is provided for automatically displacing the delivery end 30A of the guide plate 30 following the rotation of the winding frame. The control device includes, for example, four corner portions of the bobbin M (when the first laminated block is wound) or four corner portions of the laminated block wound around the bobbin (the second and subsequent laminations). (When winding the body block), a corner height calculating means for calculating the height of the top of the corner at the highest position using the above equation (1) or (2), and the corner height The height obtained by adding the offset value set to the height of the top of the corner calculated by the calculating means is set as the target height, and the height of the sending end of the guide plate is held at the target height. Motor rotation angle calculation means for calculating the rotation direction and rotation angle of the electric motor 29a necessary for the operation, and controlling the motor to rotate the motor by the rotation angle calculated in the rotation direction calculated by the motor rotation angle calculation means Motor control device It can be.

In order to automatically manufacture the wound core, the bobbin driving device, the laminate block supply device 26, the pressing member driving mechanism of the lap pressing device 70, and the lap clamp device 60
It is preferable to provide a control device for controlling the first and second clamp plate driving mechanisms.

This control device includes a sensor for detecting the rotation angle of the bobbin M, a sensor for detecting that one end of the laminated body block has reached a predetermined position on one short side of the bobbin M, and operation of each part. It can be composed of various sensors such as position sensors for detecting the position, and a microcomputer that performs sequence control of each unit by using detection outputs of these sensors as inputs.

This control device stacks the bobbin M at the position of one short side of the bobbin M through the lamination block introducing section G in a state where one short side of the bobbin M is positioned at the lamination block introducing section G. A stack block supply operation for supplying one end end Ba of the body block B, and a lap holding device for one end end Ba of the laminate block B supplied to one short side position of the bobbin M The lap pressing operation of pressing the bobbin frame by the pressing member 73 of 70 and the clamping plate 64 of the lap clamp device 60 is brought into contact with one end Ba of the laminated block pressed by the pressing member 73. A laminate end clamping operation for clamping the end on the one end side;
3 is displaced to the retracted position to retract the wrap press so that the rotation of the bobbin M is allowed, and the laminar block B having its one end clamped by rotating the bobbin to move the endless belt 45 The wrap portion L is formed by winding inward and overlapping the other end portion Bb with the one end portion Ba, and then the wrap portion L is stopped with the wrap portion L positioned inside the endless belt 45. Laminate block winding operation and end B on one end side forming lap portion L of laminate block B
and a clamp plate releasing operation of displacing the clamp plate 64 sandwiched between a and the other end Bb away from the bobbin along the second direction to separate from the wrap portion L. And a wrap portion clamping operation for abutting the clamp plate 64 detached from the wrap portion L on the outer peripheral side of the wrap portion and displacing the wrap portion to a position for clamping the wrap portion with respect to the winding frame, and introducing the wrap portion L into a laminated block. The winding frame return operation of rotating and stopping the winding frame M until it is positioned at the portion G is repeated until the required number of laminated blocks are wound.

FIG. 15 shows an example of an algorithm of a program executed by a microcomputer to realize the control device. The winding operation of the core in the case of this algorithm will be described below.

When the program starts, first, a predetermined number of laminated amorphous magnetic alloy ribbons are cut into a predetermined length by a shear (not shown) to form a unit laminate, and the unit laminates are stacked. Thus, a stacked block B having a structure as shown in FIG. 23 is formed (Step 1 in FIG. 15). Next, when it is detected on the side of the stack block supply device 26 that the condition for receiving a new stack block has been satisfied, the stack block B is transported to the receiving position of the stack block supply device 26 (step 2). . By repeating Step 1 and Step 2, the required number of laminated blocks for forming the wound core are sequentially manufactured, and a series of laminated blocks are supplied to the receiving position of the laminated block supply device 26.

In step 3 of FIG. 15, the laminate block B is transported to a standby position on the guide plate 30 of the laminate block supply device 26, as shown in FIG. Next, in step 4, the upper clamp 31A and the lower clamp 31B are moved to the position of the waiting laminated block (receiving position), and in step 5, the vicinity of the tip of the laminated block is clamped. When it is detected that the condition for receiving a new laminate block is satisfied on the winding core winding device side, step 6 is performed, and the clamps 31A and 31B clamping the laminate block B are moved to the bobbin M side. As shown in FIG. 5, the end Ba of the laminate block B at one end is inserted through the laminate block introduction portion G onto one short side of the bobbin M stopped at the laminate block receiving position. Next, at step 7, the clamp of the laminated block B by the clamps 31A and 31B is released.

After supplying one end of the laminate block B to one short side of the winding frame M, the step 8 is executed to lower the pressing member 73 of the lap pressing device 70 to the pressing position as shown in FIG. Then, the end Ba of one end of the laminated block B is pressed against the short side of the bobbin M. Next, step 9 is performed to wrap the lap clamp devices 60, 60 as shown in FIG.
By moving the clamp plates 64, 64 in parallel to the outside in the axial direction of the main shaft 23, the clamp plates 64, 64 are detached outside the bobbin M. Next, in step 10, the clamp plates 64, 64 of the lap clamp are displaced (raised) outward in the radial direction of the main shaft as shown by the arrow A1 in FIG.
In FIG. 8, as shown by an arrow A2 in FIG.
64 is moved inward in the axial direction of the main shaft, and in step 12, the clamp plate 6 is moved as indicated by an arrow A3 in FIG.
4, 64 is displaced (down) radially inward of the main shaft,
The end Ba is clamped by being brought into contact with the laminated end face of the end Ba on one end side of the laminated block B.

After clamping the laminated end face on one end side of the laminated block B by the clamp plates 64, 64,
In FIG. 3, as shown in FIG. 9, the pressing member 73 of the lap pressing device is moved to the upper retreat position to open the lap pressing device.

In step 14, after releasing the wrap holding device, the main frame 23 is rotated by a reel driving device (not shown) to rotate the reel M in the direction of the arrow U shown in FIG. Rotate back and forth. As a result, the endless belt 45 is moved in the direction of the arrow U, and the laminated body block B having one end end Ba fixed to the bobbin M is wound inside the endless belt 45 as shown in FIG.
Wrap around. At this time, the friction applying member 33 comes into contact with the laminated block B to apply an appropriate tension to the laminated block, and the springs 80, 80 disposed on both sides of the endless belt 45 in the width direction are connected to the laminated block introduction portion. G comes into contact with the laminate block B near the starting point P, and the laminate block B
Is pressed toward the winding frame M, so that the laminate block B is smoothly wound inside the endless belt 45.

FIG. 10 shows a state where the winding frame M is rotated by 180 degrees (1/2 rotation) from the state of FIG. As shown in FIG. 11, the winding frame M is changed to 1 + α (0 <α
<1) After the rotation, the winding frame M is stopped. FIG.
Numeral 1 indicates a state in which α = 0.5 and the winding frame is stopped after being rotated 1.5 times (540 degrees) from the state of FIG. 9. In the state shown in FIG. 11, the end Bb on the other end is overlapped with the end Ba on the other end via the clamp plate 64 on the end Ba on the one end of the laminate block B wound inside the endless belt 45, and the lap L is formed. In a formed state.

After stopping the winding frame M by rotating it 1.5 times,
Step 15 is performed, and as shown in FIG.
4, 64 are displaced from the wrap portion L by moving in parallel outward along the axial direction of the main shaft. After releasing the clamp plates 64, 64 in step 15, step 16 is performed to move the clamp plates 64, 64 outward in the radial direction of the main shaft as indicated by arrow A1 'in FIG. Next, step 17 is performed to translate the clamp plates 64, 64 inward along the axial direction of the main shaft as indicated by arrow A2 'in FIG.
4, 64 are moved inward in the radial direction of the main shaft as indicated by an arrow A3 'in FIG. Thereby, the clamp plate 64,
13, the wrapped portion L is clamped by reaching the clamp position where the wrapped portion 64 comes into contact with the wrapped portion L of the laminate block B as shown in FIG. Thereafter, in step 19, the stack block supply device 16 is reciprocated while rotating the reel M by 1-α rotation (1−α = 0.5 rotation in the illustrated example), and the reel M is rotated as shown in FIG. To the stack block receiving position, and the reel M
Is positioned at the laminate block introduction portion G.

When the laminated block is wound around the winding frame M, the outer diameter of the laminated block wound body formed around the winding frame with the increase in the number of wound laminated blocks is increased. Is getting bigger. It is necessary to change the position of the sending end of the guide plate 30 when sending out a new laminate block B to the bobbin side in accordance with the increase in the outer diameter. Therefore, prior to winding the second and subsequent stacked blocks, in step 20, the corner radius R used in the calculations of the equations (1) and (2) is set to the thickness ΔR of the corner of the stacked block. increase.

As described above, the height of the sending end of the guide plate is changed with the rotation of the bobbin, so that the height between the corner at the highest position of the bobbin and the sending end of the guide plate is changed. FIG. 18 illustrates a series of operations performed when the laminate block is wound around the bobbin while controlling the vertical distance to be kept at a constant offset value.
(A) to (C) and FIGS. 19 (A) and (B). When the height of the sending end of the guide plate is changed by following the rotation of the bobbin, as shown in FIG. 18C, when the long side of the bobbin is in the horizontal direction, Since the vertical distance between the delivery end of the guide plate and the bobbin can be shortened to prevent a large slack in the laminate block B, the laminate block can be wound in a state where the laminate block remains loose. It can be prevented from being turned, and as shown in FIG. 19C, the laminate block B can be wound without loosening.

As shown in the above example, when the face plates 25, 25 are arranged on both sides of the bobbin M to regulate the position in the width direction of the laminate block wound around the bobbin M, By aligning the positions of the blocks, it is possible to obtain a wound iron core having less unevenness on the laminated surface, but these face plates may be omitted.

When the face plates 25 are omitted, appropriate support means is attached to the main shaft 23, and the lap clamp device is supported via the support means.

When a friction applying member (weight) 33 that comes into frictional contact with the laminate block B is provided as in the above example,
While it is possible to apply an appropriate tension to the laminate block B to smoothly roll up the laminate block, the friction imparting member may be omitted.

Further, when the springs 80, 80 are provided as described above, the laminate block B can be made to follow the winding frame M, and thus the winding of the laminate block can be facilitated. The spring can also be omitted.

In the above example, each laminate block is composed of a plurality of unit laminates.
The “laminate block” means a laminate of amorphous magnetic alloy ribbons wound at one time on a bobbin, and the number of unit laminates constituting each laminate block is arbitrary. In other words, each laminated block only needs to be composed of at least one unit laminated body, and one unit laminated body is formed as one laminated block, and the laminated blocks are sequentially wound around a bobbin to form a wound core. The present invention can be applied to such cases.

[0117]

As described above, according to the present invention, there is provided a lap clamp device which is provided so as to rotate with the main shaft and clamps the end of the laminated block constituting the lap portion to the bobbin. When the laminate block is wound inside the endless belt and wound, the end of the laminate block is prevented from moving with respect to the bobbin, so that the position of the lap portion can be prevented from shifting, Lap flow can be prevented from occurring.

Further, according to the present invention, since the end of the laminated block is clamped to the bobbin, the lap portion is opened when the laminated block is released from the endless belt. In addition, since the wrap holding device for pressing the end of the one end side of the laminated block supplied to the laminated block introduction portion to the winding frame side is provided, the laminated block already wound is provided. The end of one end of the laminated block newly supplied to the laminated block introduction portion can be clamped without opening the wrap portion. Therefore, the winding operation of all the laminate blocks can be smoothly performed without opening the wrap portion of the wound laminate block, and a high quality wound core can be obtained.

In particular, according to the present invention, the guide block displacement mechanism is provided in the laminate block supply device, and the guide plate displacement mechanism is located at the highest position among the four corner portions of the reel or the laminate block wound on the reel. Since the delivery end of the guide plate is displaced following the rotation of the bobbin so as to maintain the vertical distance between the top of the corner portion and the delivery end of the guide plate at the set offset value, While always keeping the vertical distance between the delivery end of the guide plate and the outer periphery of the bobbin or the outer periphery of the laminated block already wound on the bobbin to the minimum necessary size, It can be supplied to the reel side. Therefore, when the laminated block moves from the guide plate to the bobbin side, the slack generated in the laminated block is reduced, and the laminated block is entangled inside the endless belt with the large slack still generated. Can be prevented,
It is possible to prevent the amorphous magnetic alloy ribbon from being wrinkled in the wound iron core and from being damaged.

[Brief description of the drawings]

FIG. 1 is a front view showing an overall configuration of an embodiment of the present invention.

FIG. 2 is an enlarged front view showing a main part of FIG.

FIG. 3 is a perspective view showing a main part of FIG. 1;

FIG. 4 is a perspective view showing a state in which a new laminate block is supplied to the laminate block introduction section in the winding core manufacturing apparatus according to the present invention.

FIG. 5 is a perspective view showing a state in which a laminate block is supplied to a laminate block introduction portion in the winding core manufacturing apparatus according to the present invention.

FIG. 6 is a perspective view showing a state in which the laminated block supplied to the laminated block introduction section is pressed by the pressing member of the wrap pressing device in the winding core manufacturing apparatus according to the present invention.

FIG. 7 is a perspective view showing a state in which the end of the laminated block supplied to the laminated block introduction portion is pressed by the pressing member of the wrap pressing device in the winding core manufacturing apparatus according to the present invention.

FIG. 8 is a perspective view showing a state in which the end of the laminate block supplied to the laminate block introduction portion is clamped by the lap clamp device in the winding core manufacturing apparatus according to the present invention.

FIG. 9 is a perspective view showing a state in which the end of the laminate block supplied to the laminate block introduction portion is clamped by the lap clamp device and then the pressing member is retracted in the apparatus for manufacturing a wound core according to the present invention. .

FIG. 10 is a perspective view of the winding core manufacturing apparatus according to the present invention, in which the stacking block supplied to the stacking block introduction portion is clamped, and then the winding frame is rotated by 度 degree to wind the stacking block inside the endless belt. It is the perspective view which showed the state.

FIG. 11 is a diagram illustrating a winding core manufacturing apparatus according to the present invention, in which the stacking block supplied to the stacking block introduction portion is clamped and then the winding frame is rotated 1.5 times to wind up the stacking block and stack both ends thereof. It is the perspective view which showed the state which combined.

FIG. 12 is a perspective view showing a state in which the clamp plate of the lap clamp device is detached from the wrap portions at both ends of the laminated block wound in the apparatus for manufacturing a wound core according to the present invention.

FIG. 13 is a perspective view showing a state where the wrap portion is clamped after the clamp plate is detached from the wrap portions at both ends of the wound laminated block in the wound core manufacturing apparatus according to the present invention.

FIG. 14 is a perspective view showing a state in which the winding frame is stopped by rotating the winding frame by 後 after clamping the wrap portion of the laminate block in the apparatus for manufacturing a wound iron core according to the present invention.

FIG. 15 is a flowchart showing a control algorithm of a control device provided in the wound iron core manufacturing apparatus according to the present invention.

FIG. 16 is a diagram showing a change in height of each corner of the bobbin.

17 (A) to (D) are explanatory diagrams sequentially showing the movement of the delivery end of the guide plate following the rotation of the bobbin.

FIGS. 18 (A) to (C) are explanatory diagrams sequentially showing the operation in the case where the height of the sending end of the guide plate is changed following the rotation of the bobbin.

19 (A) and (B) are explanatory views showing a process performed after the process of FIG. 18 (C), and FIG. 19 (C) shows a state in which a laminate block is wound around a bobbin; FIG.

FIG. 20 is a front view of a conventional wound core manufacturing apparatus.

21 (A) to (C) are explanatory diagrams sequentially showing the operation in the case where a rectangular bobbin is used instead of a circular bobbin in the apparatus for manufacturing a bobbin core shown in FIG. 20. .

FIGS. 22A and 22B are explanatory diagrams showing a process performed after the process of FIG. 21C.

FIG. 23 is a perspective view showing one of the laminate blocks used in the present invention.

FIG. 24 is a front view of a wound core manufactured by the wound core manufacturing apparatus of the present invention.

FIG. 25A is a front view showing a wound core in which wrap portions are normally distributed, and FIG. 25B is a front view showing a wound core in which a lap flow has occurred.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Main frame 23 Main shaft 25 Face plate 25 Notch 26 Stack block supply apparatus 27 Movable frame 29a Electric motor 29b Reduction gear 29c, 29d Lever 30 Guide plate 31A Upper clamp 31B Lower clamp 33 Friction applying member 40A-40G Guide roller 43A, 43B Tension roller 45 Endless belt 51A First ironing roller support arm 51B Second ironing roller support arm 53A First ironing roller 53B Second ironing roller 54A First air cylinder 54B Second air cylinder 60 Lap clamp device 61 Movable plate 64 Clamp plate 65 Guide mechanism 66 First lap clamp driving air cylinder 67 Second lap clamp driving air cylinder 70 Lapping device 72 Air cylinder 80 Spring 90 Leaf spring

Claims (7)

[Claims] 1. A bobbin having a transverse cross-section having a rectangular shape and a central portion supported by a main shaft having an axis oriented in a horizontal direction, and a bobbin driving device for rotating and driving the bobbin. A part of which is guided along a revolving orbit along the outer periphery of the bobbin in a state where the bobbin is located outside the loop and formed by forming a loop. The endless belt to be driven and a single unit laminate composed of a plurality of amorphous magnetic alloy thin ribbons laminated, or n unit laminates (n is an integer of 2 or more) in the longitudinal direction. The laminated body block, which is formed by laminating in the state shifted to one side and the other end side in the longitudinal direction is formed in a stepped shape, the guide plate in a state in which one end in the longitudinal direction is directed to the reel side. Put on top and slide on the guide plate A stack block supply device for sequentially feeding the guide plate from a sending end portion directed to the reel side and supplying the laminate block to the reel side, wherein the lamination is performed between a start point and an end point of the orbit of the endless belt. The orbit is set so as to form a laminated block introduction portion for receiving an end on one end side in the longitudinal direction of the laminated block supplied by the laminated block supplying device, and is sequentially supplied by the laminated block supplying device. A plurality of laminated blocks are sequentially wound and laminated on the winding frame by winding the laminated block to be wound inside the endless belt, and one end and the other end of each wound laminated block are overlapped. And a winding core manufacturing apparatus for manufacturing a winding core having a structure in which a wrap portion is formed, wherein the stacked block of the stacked block supplied by the stacked block supply device is provided. A wrap pressing device for pressing an end on the side of the hook introduction portion against the bobbin; and an end portion of the laminated block constituting the wrap portion provided so as to rotate together with the main shaft. The laminate block supply device is configured to supply a laminate block to be wound first on the bobbin.
The delivery end of the guide plate is fixed to the winding frame so that the vertical distance between the top of the highest one of the corners and the delivery end of the guide plate is maintained at a set offset value. When the laminate block is supplied to the outer periphery of the laminated block already wound on the bobbin, the outermost laminated block wound around the bobbin is The delivery end of the guide plate is adjusted to the offset value so that the vertical distance between the top of the highest corner of the four corners and the delivery end of the guide plate is kept at the offset value. An apparatus for manufacturing a wound iron core, comprising: a guide plate displacement mechanism that displaces a workpiece following rotation. 2. The guide plate displacement mechanism according to claim 1, wherein the guide plate is provided so as to be rotatable around one rotation center set on a rear side in a supply direction of the laminated block. A guide plate rotating mechanism for reciprocatingly rotating the guide plate by using a driving source as a drive source; and supplying the first laminated body block to the winding frame, a corner located at the highest position among the four corner portions of the winding frame. When the height of the top of the section is calculated and the laminated block is supplied to the outer periphery of the laminated block already wound on the bobbin, the outermost laminated block 4 already wound on the bobbin is supplied. A corner height calculator for calculating the height of the top of the corner at the highest position of the corners, and the height of the top of the corner calculated by the corner height calculator. Target height obtained by adding offset value Motor rotation amount calculation means for calculating a rotation direction and a rotation angle of the motor required to maintain the height of the sending end of the guide plate at the target height as the height,
2. The motor control device according to claim 1, further comprising: a motor control device that controls the motor so as to rotate the motor by a rotation angle calculated in a rotation direction calculated by the motor rotation amount calculation unit. 3. Winding core manufacturing equipment. 3. A strip-shaped plate provided so as to extend from a tip of the guide plate to a position near above the main shaft, and supporting a laminate block existing between a delivery end of the guide plate and the bobbin from below. A spring is attached to a delivery end of the guide plate, and the leaf spring is formed so as to have a width smaller than a width of the laminated block so as to extend along a central portion in a width direction of the laminated block. 3. The apparatus for manufacturing a wound iron core according to claim 1, wherein the wound iron core is arranged at a position corresponding to the center of the core. 4. The laminate block provided in the laminate block introduction portion is provided so as to be displaceable in a direction perpendicular to an axial direction of the main shaft near the laminate block introduction portion. A holding position for abutting the end on the one end side and pressing the end on the one end side against the bobbin side, and a retreat position to be away from the end on the one end side to allow rotation of the bobbin. A holding member provided so as to be displaceable between the holding member, and a holding member driving mechanism for shifting the holding member to a holding position and a retracted position, wherein the lap clamp device is provided in a radial direction of the main shaft. An outer periphery of the bobbin that is provided so as to be movable along a first direction along the second direction and is provided so as to be movable along a second direction along the axis of the main shaft. Displaced to a position facing the surface When displaced toward the reel along the first direction in the state, the laminate abuts on an end of the laminate block on the reel and clamps the end to the reel, and A clamp plate provided so as to release the clamp of the end of the laminated block when the clamp plate is moved away from the bobbin along the direction 2; and displacing the clamp plate along the first direction. A first clamp plate drive mechanism for moving the clamp plate in the second direction, and a second clamp plate drive mechanism for moving the clamp plate in the second direction, wherein the endless belt is provided so as to rotate with the main shaft. It is formed so as to have a width dimension smaller than the width dimension of the laminate block, and is disposed along the center in the width direction of the laminate block. The clamp plate of the lap clamp device interferes with the endless belt. do not do The end of the one end side of the laminated body block is provided so as to abut on a portion near an end in the width direction of the laminated body block to clamp the end of the one end side. Or the wound core manufacturing apparatus according to any one of the above. 5. A control device for controlling the bobbin driving device, the laminate block supply device, a pressing member driving mechanism of the lap pressing device, and first and second clamp plate driving mechanisms of the lap clamp device. The control device further comprises: a stack block supply operation of supplying the end of the one end side of the stack block to a position facing the outer periphery of the bobbin through the stack block introduction portion;
A pressing operation of pressing an end on one end side of the laminated body block supplied to a position of one short side of the reel against the reel by the pressing member of the lap pressing device, and pressing by the pressing member; A laminate end clamping operation in which the clamp plate of the lap clamp device is brought into contact with one end of the laminated block to clamp the one end.
The wrap retainer retracting operation for displacing the retainer member to the retracted position to allow the rotation of the bobbin; and rotating the bobbin to rotate the laminar block having one end clamped to the endless end. After forming a wrap portion by winding the inside of the belt and overlapping the other end portion with the one end portion of the laminated block, the wrap portion is wound inside the endless belt. The laminate block winding operation for stopping the frame, and the clamp plate in a state of being sandwiched between one end and the other end forming the lap portion of the laminate block are the A clamp plate detaching operation of displacing the wrap portion from the wrap portion by displacing the wrap portion away from the winding frame along the direction of 2, and contacting the clamp plate detached from the wrap portion with the outer peripheral side of the wrap portion to thereby remove the wrap portion. Clamp against the reel The required number of stacked blocks are wound by a wrapping portion clamping operation for displacing the wrapping portion to a position where the wrapping portion is moved to a position where the wrapping portion is positioned at the stacked body block introduction portion. The apparatus for manufacturing a wound iron core according to claim 4, wherein the apparatus is configured to repeat until it is turned. 6. The lap clamp device is provided in a pair, and the pair of lap clamp devices are respectively disposed on both sides in the axial direction of the winding frame. The laminate block is provided so as to press down the end of the laminated block at the position near the center in the width direction of the end of the laminated block at the introduction portion so as not to interfere with the plate. 6. The wound iron core manufacturing apparatus according to 4 or 5. 7. A pair of face plates are provided at both ends in the axial direction of the bobbin so as to rotate together with the bobbin and regulate the position of the laminate block on the bobbin in the width direction. A pair of lap clamp devices are provided, and the pair of lap clamp devices are respectively disposed on both sides in the axial direction of the bobbin; and the pair of face plates are clamp plates of the pair of lap clamp devices. The notch portion of the pair of lap clamp devices has a notch portion aligned with each other at a portion where
The winding core manufacturing device according to claim 4 or 5, wherein the winding core manufacturing device is provided so as to be displaced through the cutout portions of the pair of face plates.