JPH0228244B2 - MAKITETSUSHINSEIZOSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an apparatus for manufacturing a one-turn cut type wound core used in electrical equipment such as a transformer.

[Technical Background and Problems of the Invention] The structure of the generally adopted one-turn cut type wound core consists of a plurality of cylindrically bent bands each having a different diameter and having cuts, as shown in Fig. 1. Iron plates 1a, 1b, 1c...1n are stacked inside and outside in the radial direction, and each iron plate is 1a, 1n.
Butt portions 2a, 2b, 2c... of b, 1c...1n
2n changes its position in the circumferential direction at equal angles or equal distances for each winding in order to reduce loss by allowing the magnetic flux passing between them to pass through the iron plate, and returns to the original position after an appropriate number of windings. It is configured to return.

When manufacturing such a wound core, as shown in Fig. 2, a long iron plate 1 that has been wound into a roll is wound up, and the sides of the wound iron core are sawed so that they are aligned on the same radius line. Mark 3 at the cutting position located at
a, 1b, 1n, and convert this iron plate into 1a, 1b, 1
c...1n in the original order inside and outside to form the first
The company manufactures the wound core shown in the figure.

However, in the conventional method of manufacturing a wound core in this way, cutting marks 3 are placed on the wound iron plate.
The process of attaching the iron plate, the process of unwinding the iron plate 1, and the process of cutting the iron plate 1 are almost all carried out manually, which results in poor productivity in manufacturing the iron core, which increases the number of man-hours and increases the manufacturing cost. There is.

[Object of the invention] The present invention automatically performs the process of winding (unwinding) a hoop-shaped iron plate and cutting it into predetermined lengths,
An object of the present invention is to provide a wound core manufacturing apparatus capable of manufacturing a one-turn cut type wound core with high productivity.

[Summary of the invention]

The wound core manufacturing apparatus of the present invention includes a winding shaft that winds a hoop-shaped iron plate every one turn (one rotation), and a winding core that winds a hoop-shaped iron plate every one turn (one rotation)
It is equipped with a feed roller that feeds the iron plate to the winding shaft for each winding, and a cutting blade that cuts the iron plate wound on the winding shaft.Furthermore, a calculation mechanism is used to calculate the winding length of the iron plate wound on the winding shaft for each winding (each rotation). The rotation of the winding shaft and feed roller is controlled by the respective rotation control mechanisms based on these commands, thereby creating a rolled iron core in which multiple cylindrical iron plates with different diameters and cuts are stacked on the inside and outside. It manufactures.

[Embodiments of the invention]

An embodiment of the present invention illustrated in the drawings will be described below.

FIG. 3 is a schematic configuration diagram showing one embodiment of the wound core manufacturing apparatus of the present invention, and FIG. 4 is a block diagram showing a control system in the same embodiment.

In FIG. 3, reference numeral 11 is a support member that supports the hoop-shaped iron plate 1, 12 and 12' are unwinding rollers that feed out the iron plate 1 from the support member 11, and 1
Reference numeral 3 denotes an electric motor that rotates one rewinding roller 12 via a belt 14. In the figure, 15 is an auxiliary roller. In the figure, reference numerals 16 and 16' designate feed rollers that sequentially feed the iron plate 1 fed out from the support member 11 by a predetermined length. In the figure, 17 is a servo motor, and 18 is a rotary generator, which drive and control the rotation of one feed roller 16.
As shown in the figure, a feed roller rotation control mechanism 20 is configured together with a servo motor controller 19. In the figure, 21 is a pulse generator that rotates integrally with the feed roller 16. 22 in the figure is the feed roller 16,1
This is a cutting blade provided in front of the steel plate 6' in the steel plate feeding direction, and is driven by an unillustrated air cylinder or the like to cut the steel plate 1. 23 in the figure is the cutting blade 2
This is a winding shaft provided in the iron plate feeding direction relative to 2, and winds up the fed iron plate 1 one turn, that is, every rotation. In the figure, 24 is a servo motor, 25 is a rotary generator, which drive and control the rotation of the winding shaft 23, and the servo motor controller 2
Together with 6, the winding shaft rotation control mechanism 27 is configured. In the figure, reference numeral 28 denotes an endless winding belt that surrounds, presses and supports the outer circumference of the iron plate 1 wound around the winding shaft 23. It rotates following the rotation of the iron plate 1 being wound up. In the figure, 30 is a pulse generator that rotates together with a predetermined guide roller 29, and this is measured by the length of the iron plate 1 that follows the rotation of the winding belt 28 via the guide roller 29 and is wound around the winding shaft 23. 31 in the figure is a cylinder for constantly applying tension to the winding belt 28. In the figure, numeral 32 denotes a winding shaft origin switch, which is operated by an operating body 41 provided on the winding shaft 23 every time the winding shaft 23 rotates once.

Next, the configuration of the control system including the mechanical configuration described above will be described with reference to FIG. In the figure, numeral 33 denotes a computing unit, which instructs the length of the iron plate 1 to be wound in each rotation of the winding shaft 23. In the figure, reference numeral 34 denotes a pulse generator that generates pulses based on instructions from the calculator 33. In the figure, 35 is a difference counter that receives pulses from the pulse generator and the pulse generator 21 for the feed roller, compares the two, and outputs the difference, and 36 converts the digital signal from the difference counter 35 into an analog signal. This is a digital-to-analog converter that converts the signal into a value and outputs it to the servo motor controller 19 for the feed roller. In the figure, 37 is a pulse generator 3 for pulses from a pulse generator 34 and a winding shaft.
38 is a digital-to-analog converter that converts the digital signal from the difference counter 37 into an analog signal and outputs the servo motor controller 26 for the winding shaft. It is. 39 in the figure is a pulse generator 30 which is operated by a signal from the winding shaft origin switch 32.
A counter 40 that counts the number of pulses from the winding shaft origin switch 32 is operated by a signal from the winding shaft origin switch 32 to hold the count value of the counter 39, and is
3, the outer circumference length of the iron plate 1 wound by the winding shaft 23 is output.

The operation of the thus configured wound core manufacturing apparatus will now be described.

First, a general explanation will be given of the effect. The feed rollers 16, 16' feed the iron plate 1 held by the support member 11 toward the winding shaft 23 by a length corresponding to the length that the winding shaft 23 winds up in one revolution. The winding shaft 23 rotates the iron plate 1 sent by the feed rollers 16, 16' once and winds it up to a predetermined length, and the cutting blade 22 cuts the iron plate 1 at the winding end point of the winding shaft.
The winding belt 28 is the iron plate 1 wound around the winding shaft 23.
While pressing and holding the outer circumferential side of the cylinder, it rotates by a length corresponding to the outer circumferential length. In response to this, the pulse generator 30 measures the winding length of the iron plate for one rotation of the winding shaft 23, and in response to this signal, the computing unit 33 measures the winding length of the iron plate for one rotation of the winding shaft 23.
Command the iron plate winding length by one rotation after 3.
Based on this, the feed roller rotation control mechanism 20 and the winding shaft rotation control mechanism 27 control the feed roller 16 and the winding shaft 23.
On the other hand, the rotation is controlled so that the iron plate 1 is sent and wound up by a length corresponding to a predetermined winding length. By repeating this operation, 1
The iron plate 1 (1a...1n) having a cut (butt part 2a...2n) for each winding is
a...2n) are shifted in the circumferential direction, and
Each winding is wound to produce a wound core.

We will further explain the effect.

First, to explain the operation of the computing unit 33, when the winding shaft 23 rotates and the operating body 41 drives the winding shaft origin switch 32, the counter 39 is cleared and preparations are made to measure the circumference wound by the winding shaft 23. is in place.
Here, as the winding shaft 23 further rotates, the winding belt 28 also rotates, and the pulse generator 30 provided on the guide roller 29 also rotates to generate pulses, thereby increasing the count value of the counter 39. It continues to increase. At this time, when the winding shaft 23 rotates once and the winding shaft origin switch 32 is operated again by the operating body 41, the count value of the counter 39 is held in the count holder 40 and is entered in the calculation 33 as the core circumference of the winding shaft 23. is input. Counter 39 is cleared again.

In order to repeat this operation each time the winding shaft 23 makes one revolution and the winding shaft origin switch 32 operates accordingly, the circumference of the iron plate 1 wound on a new winding shaft 23 is always input to the calculator 33. It will happen.

When the circumferential length of the iron plate is input to the calculator 33, the calculator 33 calculates the length of the iron plate 1 to be wound next by the winding shaft 23. As shown in Figure 5, this calculation for iron plate 1 is normally calculated as L (feed length) = circumference + (pitch) + 2πt (t is the thickness of iron plate 1), and is calculated several times to more than 10 times. Once, the joint of the iron plate is B
When it reaches the point, L = circumference - A + 2πt.

Next, the operation of the entire device will be explained.

The iron plate 1 of hoop material is rewinding rollers 12, 12'
The film is rewound by the rewind roller driving electric motor 13, and a slack is always provided in front of the feed rollers 16, 16'. Here, the winding shaft 23 is rotated as described above, and the new iron plate circumference of the winding shaft 23 is input into the calculator 33. Next, when the iron plate 1 is wound onto the winding shaft 23 and the apparatus is started, the arithmetic unit 23 outputs a command for the length of the iron plate 1 to be wound on the winding shaft 23 to the pulse generator 34. Based on this command, the pulse generator 34 simultaneously outputs pulses corresponding to the length of the feed of the iron plate 1 to the difference counter 37 on the winding shaft side and the difference counter 35 on the feed roll side. ′ is driven. As a result, although the iron plate 1 on the winding shaft side and the iron plate 1 on the feed roller side are cut, they move synchronously as if they were one iron plate. As a result, the difference between the pulses from the pulse generator 34 and the pulses from the pulse generator 30 of the winding belt 28 is counted by the difference counter 37, and the digital
Winding shaft rotation control mechanism 2 via analog converter 38
The servo motor controller 26 of No. 7 is operated, thereby causing the servo motor 24 and the rotary generator 25 to rotate the winding shaft 23 by the amount of command from the pulse generator 34. Similarly, on the side of the feed rollers 16 and 16', the servo motor controller of the feed roller rotation control mechanism 20 is set so that the difference between the pulse from the pulse generator 34 and the pulse from the pulse generator 2 is set to "0". 19 is operated, and the feed rollers 16 and 16' are rotated by the servo motor 17 and the rotary generator 18 to feed the iron plate 1 toward the winding shaft 23. Next, when both the winding shaft 23 and the feed rollers 16, 16' have completed their operations, the cutting blade 22 is activated to cut the iron plate 1.

By repeating the above operations a predetermined number of times, a regularly formed wound core can be manufactured.

〔Effect of the invention〕

As explained above, according to the wound iron core manufacturing apparatus of the present invention, cutting and winding of the iron plate unwound from the hoop material are automated and all are done mechanically, so productivity is greatly increased and Both accuracy and space factor are improved, and a wound core with good characteristics can be obtained.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a general wound core, Fig. 2 is an explanatory diagram showing a conventional method of manufacturing a wound core, and Fig. 3
Fig. 4 is a block diagram showing an embodiment of the wound core manufacturing apparatus according to the present invention, Fig. 4 is a block diagram showing the control system of the same embodiment, and Fig. 5 is a cut position of the wound iron core manufactured by the apparatus of the present invention. FIG. 1... Iron plate, 1a~1n... Iron plate, 2a~2n
...Abutting portion (cut), 11...Supporting member, 12
... Rewinding roller, 16, 16' ... Feed conveyor, 17 ... Servo motor, 18 ... Rotary generator, 19 ... Servo motor controller, 20 ... Feed roller rotation control mechanism, 21 ... Pulse power generation Machine, 2
2... Cutting blade, 23... Winding shaft, 24... Servo motor, 25... Rotating generator, 27... Winding shaft rotation control mechanism, 28... Winding belt, 30... Pulse generator, 32... ...Switch, 33...Arithmetic unit.

Claims (1)

[Claims] 1. A support member that winds and supports a belt-shaped iron plate, a winding shaft that winds up the iron plate fed out from the support member, and a feed roller that feeds the iron plate fed out from the support member to the winding shaft. , a cutting mechanism provided between the feed roller and the winding shaft for cutting the iron plate; a winding belt that rotates and moves while surrounding and supporting the outer periphery of the iron plate wound around the winding shaft; a circumferential length measuring mechanism that operates in response to the rotational movement of the belt and measures the circumferential length of each winding of the iron plate wound around the winding shaft; a calculation mechanism that calculates and commands the winding length of the iron plate to be wound on the winding shaft next in response to a length signal; and a calculation mechanism that operates in accordance with a command value from this calculation mechanism and winds in accordance with this command value. a winding shaft rotation control mechanism that controls the rotation of the winding shaft so as to wind up the iron plate according to the length; and a winding shaft rotation control mechanism that operates according to a command value from the calculation mechanism and sends the iron plate at a length according to the command value. and a feed roller rotation control mechanism for rotationally controlling the feed roller.