JP2000350981A - Method and apparatus for disassembling wound core transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To disassemble a transformer without touching the same with the hand. SOLUTION: A wound core transformer TR is positioned and fixed on a work stand 15 and a wedge 24 is inserted in a gap between coils 2, 2 to displace the coils 2, 2 in mutually separating directions to cut off the yoke heel part 1c of a wound iron core 1 at the bonded part thereof and the yoke heel part 1c is separated into two half yoke heel parts 1c1, 1c2. Thereafter, the wound core 1 is moved in such a state that the coils 2, 2 are fixed to pull off the wound core 1 from the coils 2, 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dismantling a wound core transformer for disassembling a wound core transformer for recycling, and a disassembling apparatus for the wound core transformer used for carrying out the disassembly method. .

[0002]

2. Description of the Related Art Conventionally, when recycling an oil-filled wound iron core transformer, after taking out the main body of the transformer from a tank, the transformer is put into an incinerator to incinerate insulation and insulating oil. The remaining coil conductor and iron core were collected as valuable resources.

[0003]

If the transformer is incinerated in recycling the oil-filled transformer, toxic gas is generated from the insulating oil and pollutes the atmosphere, which is not preferable. In order to recycle a transformer without burning it, it is necessary to perform a cleaning operation to remove insulating oil from the transformer.

[0004] Since the oil-filled transformer is in a state where the insulating oil has penetrated into the inside thereof, even if the transformer is washed as it is, the insulating oil cannot be completely removed. In order to completely remove the insulating oil from the wound core transformer, it is necessary to perform a dismantling operation for separating the wound core and the coil, and to perform a cleaning operation on the wound core and the coil individually.

In order to completely remove the insulating oil that has penetrated into the inside of the core, it is necessary to further disassemble the core separated from the coil into individual steel strips and then wash each steel strip. is there.

Therefore, when recycling the transformer, it is necessary to disassemble the transformer. However, if the transformer is disassembled manually, the worker is contaminated with insulating oil. Therefore, it is not preferable. Especially PC for insulating oil
If B is included, transformers cannot be dismantled manually, so many transformers in the era when insulating oil containing PCBs were used were stored in large quantities without being recycled. That is the current situation.

An object of the present invention is to provide a wound iron core transformer capable of continuously performing disassembly work for separating a winding iron core and a coil constituting a wound iron core transformer without using manual operation. An object of the present invention is to provide a disassembly method and a dismantling device for a wound iron core transformer used for performing the disassembly method.

Another object of the present invention is to use a manual operation to disassemble the core and the coil constituting the core transformer and to disassemble the separated core into individual steel strips. It is an object of the present invention to provide a method for dismantling a wound iron core transformer that can be performed continuously without using the same, and an apparatus for dismantling a wound iron core transformer used for performing the disassembly method.

[0009]

According to the present invention, there is provided a method of dismantling a wound iron core transformer, comprising a laminated body of steel strips, and connecting a pair of legs to one end and the other end of both legs. And a pair of coils wound around the pair of legs of the wound core, each having a joint that joins both ends of the laminated body to one of the yoke portions. A method of disassembling the wound core transformer provided, wherein the following steps (1) to (3) are performed.

(1) Inserting a wedge between the pair of coils and displacing the two coils in a direction to separate them, the one yoke portion of the wound core is cut off at the joint, and the one yoke portion is separated. Separating the yoke into a first yoke half and a second yoke half.

(2) A mold is applied to each of the first yoke half and the second yoke half constituting one yoke of the wound core, and the respective yoke half is bent. Yoke straightening process to straighten.

(3) A coil core separating step of separating the coil and the core by relatively displacing the coil and the core in which the bending of each yoke half is corrected in the axial direction of the coil. The step of correcting the yoke portion may be performed with the wedge inserted between the pair of coils, or may be performed with the wedge removed from between the pair of coils.

As described above, when a wedge is inserted between a pair of coils of a wound core transformer and displaced in a direction to separate both coils, an operator does not touch the transformer and one side of the wound core can be displaced. Can be easily separated at the joint, and the one yoke can be separated into a first yoke half and a second yoke half.

Since the first and second yoke halves are in a greatly curved state, it is difficult to separate the wound core from the coil as it is, but as described above, the first yoke halves are difficult to separate. When the core and the coil are displaced relative to each other in the axial direction of the coil in a state where the bending of each yoke half is corrected by applying a mold to the portion and the second yoke half, respectively, The coil and the wound iron core can be easily separated without touching the container.

As described above, according to the present invention, since the transformer can be dismantled without touching the wound core transformer, the wound core transformer contains insulating oil containing harmful substances such as PCB. The transformer can be safely dismantled even if the is adhered.

In the disassembly method of the present invention, it is preferable to further perform the following step (4).

(4) A winding core disassembling step of disassembling the winding core by sequentially separating and carrying out the steel strip constituting the winding core separated from the coil from the outer peripheral side of the winding core.

If the steel strip constituting the wound core is sequentially separated from the outer peripheral side to disassemble the wound core as described above, each steel strip can be washed individually, and thus the steel strip adheres to the wound core. Insulating oil can be completely removed.

The step of straightening the yoke portion includes the steps of inserting a straightening die between the first and second half halves of the core, and the first and second half halves of the core. And pressing the first and second yoke halves against the correction mold by pressing the correction presser die from the outside onto the correction presser die.
And correcting the bending of the yoke half.

The winding core disassembling step includes the steps of adsorbing the steel strips constituting the winding core one by one and displacing them in a direction to separate them from other stacked steel strips, It can be performed by repeating the process of displacing the band in a direction in which the band is separated from another steel band in a stacked state.

The winding iron core transformer disassembling apparatus of the present invention for carrying out the above disassembling method is preferably constituted by the following elements (a) to (h).

(A) A transformer holding surface for holding a wound core transformer to be dismantled with the laminated surface of the wound core substantially horizontal, and a winding core of the transformer held on the transformer holding surface. An operation in which a transformer positioning fixing portion having a pair of fixing blocks disposed so as to face each other in a direction perpendicular to the axial direction of the pair of coils with the other yoke portion therebetween is provided on one end side. Stand.

(B) A transformer supply device for supplying a wound core transformer to be dismantled to one end of a worktable.

(C) The core wound transformer supplied to one end of the workbench by the transformer supply device is advanced to the fixed block side, and the other yoke of the core of the transformer is fixed to the pair of fixed blocks. A transformer positioning device which is inserted between a pair of coils and an end of a pair of coils is brought into contact with a pair of fixing blocks to position and fix a wound iron core transformer to be dismantled to a transformer positioning fixing portion.

(D) A first position set above the pair of coils of the transformer positioned and fixed to the transformer positioning and fixing portion, and a second position which is inserted between the pair of coils. And a wedge drive mechanism for displacing the wedge between a first position and a second position, and displacing the wedge to a second position. One of the yoke portions of the core of the transformer, which is positioned and fixed to the positioning and fixing portion by being inserted between the pair of coils, is cut off at the joint portion and the one yoke portion is connected to the first yoke half. And a second core yoke separating device.

(E) The winding core of the winding core transformer, which is arranged at the transformer positioning fixing portion of the workbench and one of the yoke portions of the winding core is separated into the first and second yoke halves. 1st and 2nd
Is provided so as to be able to be displaced between a straightening position inserted between the yoke halves and a retracted position separated from the first and second yoke halves. A straightening mold, a straightening mold driving mechanism for displacing the straightening mold between a straightening position and a retracted position, and lateral and second yokes of the first half of the yoke of the wound iron core First and second correction presser dies, which are respectively disposed on the sides of the half portion, and displace the first and second correction presser dies toward the first and second yoke halves, respectively. A first and a second presser die driving mechanism for causing the first and second straightening dies to be inserted between the first and second yoke halves. The presser die is brought into contact with the first and second yoke halves from the outside, and the first and second
A half-yoke straightening device for correcting the bending of the first and second yoke halves by pressing the yoke half of the first and second straighteners toward the straightening mold side by the first and second straightening presser dies.

(F) An iron core holding table disposed further forward than the fixing block of the transformer positioning fixing section of the work table.

(G) While holding the other yoke portions of the wound cores in which the first and second yoke halves have been bent by the yoke straightening device, the wound cores are held on the core holding table. An iron core pulling-out drive mechanism that pulls out from the coil abutting on the fixed block by moving to the side and moves it onto the iron core holding base.

It is preferable that the winding core dismantling apparatus according to the present invention further includes the following elements in addition to the above-mentioned components.

(H) A winding core disassembling device for disassembling the winding core by sequentially peeling and removing the steel strip constituting the winding core moved onto the winding core holding table from the outer peripheral side of the winding core. The winding core disassembling apparatus includes a steel strip suction device that suctions a steel strip constituting a winding core held on an iron core holding plate one by one from an outer peripheral side of the winding core, and the steel strip suction device from the winding core. A suction device moving mechanism for moving in a direction away from the steel core, and a steel strip for transferring the steel strip sucked by the suction device and moved by the suction device moving mechanism in a direction to be separated from the core wound on the core holding table. It can be constituted by a transfer device.

It is preferable that the winding core disassembling apparatus is further provided with a magnetizing means for magnetizing the laminated ends of the steel strip constituting the winding core held on the iron core holding base to have the same polarity.

Preferably, the transformer disassembly device is provided with an excitation device for applying vibration to the iron core holder.

As described above, if the magnetizing means for magnetizing the laminated ends of the wound iron core to the same polarity and the excitation device for vibrating the iron core holding table are provided, the steel strips in the laminated state can be mutually connected. Can be separated from each other or the laminated state can be loosened, so that the winding core can be easily disassembled.

[0034]

FIG. 10 is an exploded perspective view showing an example of the structure of a transformer device using a wound iron core. In the figure, 1 is a wound iron core formed by winding and laminating a silicon steel strip;
2 is a pair of coils fitted on the left and right legs of the wound iron core 1;
Each coil 2 is composed of a primary coil (high voltage coil) 2a and a secondary coil (low voltage coil) 2b.

The wound core 1 is made of a laminated body of steel strips, and has a pair of legs 1a and 1b and a pair of yokes 1c and 1d connecting one end and the other end of both legs. A joining portion (not particularly shown) for joining both ends of each steel strip is provided on one yoke portion 1c. In FIG. 10, reference numerals 3 and 4 denote an upper yoke fastener and a lower yoke fastener for fastening the upper yoke part and the lower yoke part of the iron core 1, respectively, and 5 denote the outer circumferences of the left and right legs of the core 1. A band for tightening the upper yoke fastener 3 and the lower yoke fastener 4 in a direction of drawing toward each other through the coil 2.

Reference numeral 6 denotes a terminal plate attached to the upper yoke tightening fitting 3, 7 denotes an insulating plate inserted between the upper yoke tightening fitting 3 and the laminated surface of the upper yoke portion of the winding core, and 8 denotes a lower part. An insulating plate inserted between the yoke fastening metal 4 and the lamination surface of the lower yoke portion of the wound core; 9, an insulating plate inserted between the yoke portion of the wound core and the end face of the coil; Numeral 11 denotes an insulating plate inserted between the outer periphery of the upper yoke portion of the wound core and the upper yoke clamp 3, and between the outer periphery of the lower yoke portion and the lower yoke clamp 4, and 12 denotes a coil. This is an insulating plate inserted between the outer periphery and the inner surface of the tank (not shown), and the insulating plates 7 to 12 are made of a press board or the like.
The transformer device shown in FIG. 10 is housed in a transformer tank together with insulating oil.

The disassembly method according to the present invention is a method for disassembling a wound core transformer TR including a wound iron core 1 and a pair of coils 2 when recycling a transformer as shown in FIG. is there. Hereinafter, a disassembly method according to the present invention will be described with reference to FIGS. 1 to 9 together with a configuration example of a disassembly apparatus used for executing the disassembly method.

FIG. 1 is a perspective view showing an example of the configuration of a main part of the dismantling apparatus according to the present invention, and FIGS. 2 to 9 are perspective views of the main part for explaining the operation of the dismantling apparatus.

The coil core transformer disassembly apparatus shown in FIG. 1 separates the coil core transformer TR shown in FIG. 10 into a core 1 and coils 2 and 2 and then separates the core into individual steel strips. It is configured to perform the work up to disassembly.

In FIG. 1, reference numeral 15 denotes a worktable extending in one direction, and a transformer positioning fixing portion 15A is provided at one end of the worktable 15. As shown in FIG. 2, the transformer positioning and fixing portion includes a transformer holding surface 15a for holding a winding core transformer TR to be disassembled with the lamination surface 1A of the winding core 1 substantially horizontal. The transformer TR held on the transformer holding surface is disposed so as to face in a direction perpendicular to the axial direction of the pair of coils 2, with the other yoke portion 1 d of the winding core 1 of the transformer TR interposed therebetween. Pair of fixed blocks 16, 16
Are provided.

Reference numeral 17 denotes a transformer supply device for supplying the wound core transformer TR to be dismantled to one end of the worktable 15, and this transformer supply device is, for example, a roller conveyor.
A transformer TR is provided at a workbench-side terminal of the transformer supply device 17.
A transformer positioning plate 17A is provided for positioning the transformer by bringing the coils into contact with each other.

In the wound core transformer TR to be dismantled, one yoke portion 1c of the wound core 1 is located on the side opposite to the worktable 15, and the legs 1a and 1b of the wound core are connected to the worktable 15. It is supplied to one end side of the worktable 15 in a state of being directed in the longitudinal direction.
One of the coils 2 of the wound iron core transformer TR is a positioning plate 17A.
When the contact is made, the supply device 17 is stopped, and the transformer is positioned.

Reference numeral 18 denotes a transformer positioning device including a hydraulic cylinder 19 using oil or air as a working fluid, and a transformer holder 20 attached to the tip of a piston rod 19a of the hydraulic cylinder 19. The transformer holding bracket 20 is configured to have a U-shaped cross section, and as shown in FIG.
The transformer TR is configured to be able to be held in a state where one yoke portion 1c of the winding core 1 of the transformer TR positioned by the positioning plate 17A is fitted.

The transformer positioning device 18 transforms one yoke portion 1c of the wound core transformer TR supplied to one end of the work table 15 by the transformer supply device 17 and positioned in contact with the positioning plate 17A. The piston rod of the fluid pressure cylinder 19 is extended while the transformer is held by being fitted inside the concave portion 20a of the device holding bracket 20,
The core transformer TR is advanced to the fixed blocks 16, 16. As a result, as shown in FIG. 2, the other yoke portion 1d of the wound core 1 of the transformer TR is connected to the pair of fixed blocks 16,1.
6 and the ends of the pair of coils 2 and 2 are brought into contact with the pair of fixed blocks 16 and 16 to form the transformer TR.
Is positioned and fixed to the transformer positioning and fixing portion 15A. After positioning and fixing the transformer TR, the piston rod of the fluid pressure cylinder 19 is retracted, and the transformer holding bracket 20 is moved.
Is retracted from the transformer TR.

Reference numeral 21 denotes a winding core joint separating device disposed near the transformer positioning and fixing portion 15A. As shown in FIG.
Frame 22 having a support 22a fixed to the support 22a, an arm 22b bent from the upper end of the support 22a and extending in a horizontal direction above the transformer TR, and a transformer fixed to the transformer positioning fixing part 15A. A fluid pressure cylinder 23 mounted on the fixed frame 22 and disposed above the coils 2 and 2 of the vessel TR with the piston rod 23a directed downward and the axis thereof oriented vertically. Piston rod 23 of fluid pressure cylinder 23
and a wedge 24 attached to the lower end of a.

As shown in FIG. 3, the hydraulic cylinder 23
Are arranged so that the axis of the piston rod 23a passes between the coils 2 and 2 of the transformer TR which is positioned and fixed to the transformer positioning and fixing portion 15A. , 2 are attached to the lower end of the piston rod 23a in a state facing the opposite direction. The wedge 24 is driven by the hydraulic cylinder 23 to move the first position (the position shown in FIG. 1) set above the paired coils 2 and 2 of the transformer TR and the paired coils 2 and 2 Between the second position (the position shown in FIG. 3) which is inserted between them. In this example, the hydraulic cylinder 2
3 constitutes a wedge drive mechanism for displacing the wedge 24 between the first position and the second position.

As shown in FIG. 3, when the wedge 24 is displaced to the second position and inserted between the pair of coils 2, 2,
Since the pair of coils 2 and 2 are moved away from each other, one yoke portion 1c of the wound iron core 1 is cut off at its joint, and the one yoke portion 1c is connected to the first yoke. It is separated into an iron half 1c1 and a second yoke half 1c2.

Reference numeral 25 denotes a yoke half correction device arranged on the transformer positioning and fixing portion 15A.
5, a correction mold 26 provided so as to be displaceable in the vertical direction through the transformer positioning and fixing portion 15A, and a correction mold driving mechanism 27 for driving the correction mold in the vertical direction.
, First and second correction press dies 28 and 29, and first and second correction press dies for driving the first and second correction press dies 28 and 29 in the horizontal direction, respectively. It comprises drive mechanisms 30 and 31.

More specifically, the straightening mold 26
Is vertically movably provided at a position corresponding to one yoke portion 1c of the winding core 1 of the transformer TR which is positioned and fixed to the transformer positioning and fixing portion 15A.
5 and is connected to the upper end of a piston rod 32a of a fluid pressure cylinder 32 fixed to a frame (not shown). The straightening mold 26 is driven by the cylinder 32, and the wound core transformer TR is in a state where one yoke portion 1c of the wound iron core 1 is separated into first and second yoke half portions 1c1 and 1c2. Correction position (position shown in FIG. 5) in which it is inserted between the first and second yoke halves 1c1 and 1c2 of FIG.
Between the first and second yoke halves 1c1 and 1c2 in a vertically displaced state. In this example, a correction mold driving mechanism 27 that displaces the correction mold 26 between the correction position and the retracted position by the fluid pressure cylinder 32 is configured.

As shown in FIGS. 6 and 7, the correction mold 26 includes a prismatic main body 26a having a width substantially equal to the distance between the legs 1a and 1b of the wound iron core 1, and the main body 26a. Part 2
6a is integrally formed with a wedge-shaped portion 26b formed at the upper end. The wedge-shaped portion 26b has an inclined surface 26 formed to extend obliquely upward from the upper end of the side surface 26a1 on one end side in the longitudinal direction of the main body portion 26a toward the other side surface 26a2.
b1 and diagonally upward from the upper ends of the side surfaces 26a3 and 26a4 facing the width direction of the main body 26a, and the main body 2
There are provided inclined surfaces 26b2 and 26b3 which are inclined in a direction approaching each other as approaching one end side in the longitudinal direction of 6a.

The inclined surfaces 26b1 to 26b3 are
It is provided so as to meet at one point above the side surface 26a1 on one end side in the longitudinal direction of "a". The straightening mold 26 has a side surface 26a2 on the other end side in the longitudinal direction, and the other yoke portion 1 of the wound iron core 1.
It is arranged facing the d side.

After the one yoke portion 1c of the core 1 is separated into the first half yoke 1c1 and the second half yoke 1c2 by the winding core joint separating device 21, the straightening metal is used. The mold 26 is driven by the hydraulic cylinder 32 to be displaced upward. When the correction mold 26 is displaced upward, first, the inclined surfaces 26b1 of the correction mold 26 come into contact with the yoke halves 1c1 and 1c2 in a curved state from the inside, and the two yoke halves outward. Displace. Next, the inclined surfaces 26b2 and 26b3 of the correction mold 26 are engaged between the yoke halves 1c1 and 1c2 to open both yoke halves outward, and finally, as shown in FIG. The main body 26a of the mold 26 is interposed between the yoke halves 1c1 and 1c2 (1c2 is not shown in FIG. 7), and the yoke halves 1c1 and 1c2 are extended.

First and second correction presser dies 28 and 2
Reference numeral 9 is formed in a plate shape, and is arranged on the side of the first yoke half 1c1 and the side of the second yoke half 1c2 of the wound iron core 1, respectively. The first and second correction presser dies 28 and 29 are attached to the distal ends of piston rods 35a and 36a of fluid pressure cylinders 35 and 36 attached to support plates 33 and 34 fixed to the work table 15, respectively. The hydraulic cylinders 35 and 36 are driven to displace the first and second yoke halves 1c1 and 1c2, respectively. In this example,
The fluid pressure cylinders 35 and 36 constitute first and second correction presser die driving mechanisms 30 and 31, respectively.

The first and second correction presser dies 28 and 29 are provided with first and second yoke halves 1c1 and 1c of a wound core.
After the correction mold 26 is inserted during c2, it is driven by the fluid pressure cylinders 35 and 36 and moved to the first and second yoke halves 1c1 and 1c2. The first and second correction press dies 28 and 29 are brought into contact with the first and second yoke halves 1c1 and 1c2 with a predetermined pressure by the urging forces of the fluid pressure cylinders 35 and 36. The first and second yoke halves 1 are formed by these presser dies 28 and 29.
c1 and 1c2 are pressed toward the correction mold 26, and the bending of the first and second yoke halves 1c1 and 1c2 is substantially corrected.

The transformer positioning and fixing portion 15 of the work table 15
A groove 15b that extends linearly toward the other end of the worktable 15 is provided in a portion located forward of A.
At a position in front of the transformer positioning and fixing portion 15A of the work table 15, a pair of iron core holding tables 38, 38 facing each other with the groove 15b therebetween is provided. Iron core holder 38,
Numerals 38 are provided with their respective upper surfaces positioned on the same plane, so that the core 1 can be horizontally held on the upper surfaces of the two core holders 38, 38.

In the dismantling device shown in the figure, the work table groove 15 is also provided.
The movable frame 40 which reciprocates in b is provided. The movable frame 40 is guided by a guide mechanism (not shown) and travels in the groove 15b.
And an upright portion 40b standing upright from the movable block and protruding vertically upward from the upper surface of the worktable 15, and an arm portion 40c extending horizontally from the upper end of the upright portion 40b to one end of the worktable 15
And a fluid pressure cylinder 4 at the tip of the arm 40c.
1 is mounted with its piston rod oriented vertically downward. A pin 42 is attached to the lower end of the piston rod of the fluid pressure cylinder 41, and is located between the other yoke portion 1d of the winding core 1 of the transformer and the coils 2 and 2 positioned and fixed to the transformer positioning and fixing portion 15A. By lowering the piston rod of the fluid pressure cylinder 41 with the pin 42 positioned above the gap, the pin 42 is inserted inside the other yoke portion 1d of the wound core, and the wound core 1 is held. You can do it.

A hydraulic cylinder 43 is fixed to the other end of the work table 15 with its axis oriented in the horizontal direction, and a piston rod 43 a of the hydraulic cylinder 43 is connected to the movable frame 40.

In the illustrated example, the fluid pressure cylinder 41 and the pin 42 constitute a yoke holding device for holding the other yoke portion of the wound core, and this yoke holding device and the movable frame 4
0 and the fluid pressure cylinder 43, while holding the other yoke of the wound core in which the bending of the first and second yoke halves has been corrected by the yoke half straightening device, By displacing to the holding table 38 side, the fixed blocks 16
Core holder 3 pulled out of coils 2 and 2 abutted on
An iron core pull-out drive mechanism 45 that moves on the upper and lower surfaces 8, 38 is configured.

An exciter (not shown) is connected to the core holders 38, 38, and the core holders 3 are driven by the exciters.
Vibrations are applied to 8, 38.

Transformer positioning fixing part 15A of work table 15
, A coil discharge fluid pressure cylinder 50 is arranged, and a coil discharge plate 51 is attached to a tip of a piston rod 50a of the cylinder 50. Coil discharge plate 5
Numeral 1 is disposed at a position corresponding to the coils 2 and 2 of the transformer positioned at the transformer positioning fixing portion, and after the core 1 is pulled out from the coils 2 and 2, the fluid pressure cylinder 50 is driven. Thus, the coil discharge plate 51 is advanced toward the coils 2 and 2 left on the work table. The coils 2, 2 are pushed by the coil discharge plate 51 and are collected in a coil collection case 52 provided on the side of the work table 15.

A column (not shown) extending in the vertical direction is attached to one of the core holding tables 38, and the first and second movable arms 61 and 62 are rotatable and vertically positioned on the column. It is supported staggered. Each of the first movable arm 61 and the second movable arm 62 has a rear end portion supported by a column, and a fluid pressure cylinder 63 has a piston at a distal end of the first movable arm 61 disposed above. It is mounted with the rod facing downward. At the lower end of the piston rod of the fluid pressure cylinder 63, one of the yoke portions 1 of the wound iron core 1 disposed on the iron core holding base 38 is provided.
A floater (trade name) 64 facing the lamination surface of the yoke half 1c2 of c is attached. A floater 65 is disposed at a position of the iron core holder 38 facing the floater 64, and a yoke half 1 c 2 of one yoke part of the wound core 1 held on the iron core holder 38 is placed on the floater 65. I'm getting on.

The floaters 64 and 65 have a structure in which a magnet is housed in a flat case, and when they are opposed to a ferromagnetic material, the ferromagnetic materials are magnetized to have the same polarity. . Therefore, the piston rod of the fluid pressure cylinder 63 is lowered to move the floater 64 to the yoke half 1 of the wound iron core.
When the end faces in the width direction of the steel strip constituting the yoke half 1c2 of the wound iron core 1 are magnetized in the same polarity when facing the lamination surface of c2, the portion of the yoke half 1c2 A repulsive force acts between the steel strips stacked in the step, and the steel strips are easily separated. Further, since the core wound on the core holder 38 is subjected to vibration from the core holder, the steel strip constituting the core is more likely to separate.

At the tip of the second movable arm 62 supported by a support fixed to the iron core holding table 38, a steel strip suction device 6 for sucking a steel strip constituting a wound iron core using vacuum.
6 is attached. The second movable arm 62 is connected to a piston rod of a fluid pressure cylinder 67 supported by the work table 15, and is driven by the fluid pressure cylinder 67 to approach the wound core 1 on the iron core holding table 38. And in a direction away from the wound core.

In the illustrated example, the suction device moving mechanism is constituted by the fluid pressure cylinder 67, and the moving mechanism, the second movable arm 62 and the steel strip suction device 66 make the iron core holder 3.
A steel strip peeling mechanism is configured to sequentially attract the steel strips constituting the wound core 8 from the outer peripheral side of the wound core and peel off the steel strip from the other stacked steel strips.

In the vicinity of the iron core holding table 38, a steel strip transfer device 68 for transferring the steel strip peeled off from the core 1 is arranged. The illustrated steel strip transfer device 68 has a pair of guide beams 69, 69 arranged in parallel with each other in a state inclined with respect to the longitudinal direction of the work table 15, and the shafts are supported by these guide beams 69, 69. A first belt feeding device 71 having two drive belts 70, 70 stretched over rollers, and a roller supported by guide beams 72, 72 arranged in parallel with the guide beams 69, 69. A second belt feeding device 74 constituted by extending a belt 73
It consists of The second belt feeding device 74 is connected to the working table 1 by a fluid pressure cylinder 75 fixed to the working table 15.
5 is attached to a movable block 76 driven in the longitudinal direction, and driven by a hydraulic cylinder 75 to
Is displaced in a direction approaching the belt feeding device 71 and in a direction away from the first belt feeding device 71. The first belt feeding device 71 is provided with an electric motor (not shown) for driving the belts 70, 70, and moves the second belt feeding device 74 close to the first belt feeding device 71. When a steel strip is supplied between the two belt feeding devices in the retracted state, the steel strip is discharged in a direction away from the wound core 1.

The second movable arm 62 is provided so as to enter between the two belts 70 when it is rotated toward the first belt feeding device 71. The piston rod is connected to the second movable arm 62 between the belts 70, 70.

In the example shown, the movable arm 62, the suction device 66, and the fluid pressure cylinder 67 make the core holder 3
A steel strip peeling device for sequentially peeling the steel strip constituting the wound core 1 moved onto the upper and lower surfaces 8, 38 from the outer peripheral side of the wound core is constituted, and the peeling device and the discharging device 68 constitute the wound core. A decomposition device is configured.

In the wound iron core disassembling apparatus, the suction device 66 is driven by the fluid pressure cylinder 67 to be displaced toward the wound iron core 1 on the iron core holding base 38. As a result, the suction device 66 is brought into contact with the steel strip on the outer peripheral side of the wound core 1, and the steel strip is sucked by the suction device 66. Next, the piston rod of the fluid pressure cylinder 67 is retracted, the steel strip A sucked by the suction device 66 is peeled off from the wound core 1, and the belt 7 of the first belt feeding device 71 is removed.
0,70. Next, the fluid pressure cylinder 75
Is driven to drive the second belt feeding device 7 as shown in FIG.
4 is moved toward the first belt feeding device 71,
The belts 70, 70 are driven. As a result, the steel strip A peeled from the core 1 is discharged in a direction away from the core 1 on the core holder. By repeating these operations, the wound core 1 is disassembled into individual steel strips.

In order to prevent the core from being largely moved when the core is disassembled, the core holders 38 are inserted inside the window of the core 1 so that the inner periphery of the core 1 Core fixing plate 77, which fixes the wound core by contacting the
77 is attached. These iron core fixing plates 77,
Reference numeral 77 is provided so as to be displaceable up and down, and when the core 1 is moved onto the core holders 38, 38, it is in a state of being retracted downward so as not to protrude from the upper surface of the core holder. After the core 1 is moved onto the core holders 38, 38, the cores are projected upward from the upper surfaces of the core holders 38, 38 to fix the core.

Hereinafter, a method for dismantling a wound iron core using the above dismantling apparatus will be described.

First, the winding core transformer TR to be dismantled by the transformer supply device 17 is placed in a state where one of the yoke portions 1c of the winding core 1 is located on the side opposite to the worktable 15, and 1 is supplied to one end of the work table 15 with the legs 1a and 1b oriented in the longitudinal direction of the work table 15, and the coils of the transformer are positioned on a positioning plate provided at the end of the transformer supply device 17. 17A, and positions the transformer TR.

Next, the hydraulic cylinder 19 is driven to advance the transformer holder 20, and the yoke portion 1c of the wound core is fitted into the recess 20a of the holder 20. In this state, the fluid pressure cylinder 19 is further driven to change the transformer T as shown in FIG.
R is moved onto the transformer positioning fixing part 15A of the worktable 15, and the yoke part 1d of the wound iron core 1 is fixed to the fixing blocks 16,1.
6 and the ends of the coils 2 and 2 are brought into contact with the fixing blocks 16 and 16 to position and fix the transformer TR to the positioning and fixing portion 15A.

Next, as shown in FIG. 3, a wedge 24 is inserted between the pair of coils 2 and 2 of the transformer TR and displaced in a direction in which the two coils are separated from each other, whereby one yoke portion 1c of the wound core 1 is formed. Is cut off at the joint, and the one yoke is separated into a first yoke half 1c1 and a second yoke half 1c2.

Next, after the wedge 24 is retracted upward, as shown in FIG. 4, the movable frame 40 is moved to the transformer positioning and fixing portion 15A, and the pin 42 is wound by driving the fluid pressure cylinder 41. The yoke portion 1d of the wound core 1 is held by being inserted inside the yoke portion 1d of the iron core 1.

Next, as shown in FIG. 6 and FIG. 7, the fluid pressure cylinder 32 is driven to move the correction mold 26 upward, and as shown in FIG. The operation of inserting between the first yoke half 1c1 and the second yoke half 1c2 constituting one yoke, and the pressing presser die 2 for correction.
8 and 29 are respectively brought into contact with the yoke halves 1c1 and 1c2 from the outside to press these yoke halves against the correction mold 26, thereby performing the bending of the yoke halves 1c1 and 1c2. Perform the yoke straightening process to straighten.

After correcting the bending of the yoke halves 1c1 and 1c2, the fluid pressure cylinder 43 is driven to move the wound core 1 toward the iron core holding table 38, whereby the wound core is pulled out of the coils 2 and 2. Then, a coil core separating step of separating the core and the coil is performed, and the core 1 is moved onto the core holding tables 38, 38 as shown in FIG.

Next, as shown in FIG. 8, the fluid pressure cylinder 63 is driven to move the floater 64 to the yoke half 1 of the wound iron core 1.
The core is held in contact with the lamination surface of c2, and the iron core holding tables 38, 38 are vibrated to loosen the lamination state of the retracted laminate constituting the wound iron core 1. In this state, as shown in FIG. 8, the cylinder 67 is driven to displace the suction device 66 toward the outer periphery of the wound core 1, and the suction device sucks the steel strip A on the outer periphery of the wound core. After the steel strip on the outer periphery of the wound iron core is sucked by the suction device 66, the piston rod of the cylinder 67 is retracted, and the sucked steel strip A is transferred to the belt 7 of the belt feeding device 68.
Contact 0,70. Next, the cylinder 75 is driven to advance the belt feeding device 74, and the belt feeding device 74 is brought close to the belt feeding device 68 to bring the belt 73 into contact with the retreat A as shown in FIG. In this state, the belts 70, 70 of the steel strip transfer device 68 are driven, and the steel strip A is displaced in a direction in which the steel strip A is separated from the wound core 1 to be separated from the wound core 1.
By repeating these operations, the wound core 1 is disassembled into individual steel strips. The separated steel strip is sent to the next step (for example, a cutting step or a washing step) by a conveyor (not shown) arranged on the side of the work table 15.

As described above, in the transformer disassembly method according to the present invention, the wedge 24 is inserted between the pair of coils 2 and 2 and displaced in the direction in which the two coils are separated from each other. A step of separating one yoke portion 1c at a joint portion to separate the one yoke portion into a first yoke half portion 1c1 and a second yoke half portion 1c2, and a winding core. The first and second yoke halves 1c1 and 1c2, which constitute one of the yoke portions 1c, respectively, have molds 26, 28, and 29, respectively.
To correct the bending of each half of the yoke, and the coils 2, 2 and the wound core of which the bending of each half of the yoke has been corrected relatively in the axial direction of the coil. A coil core separating step of separating the coils 2 and 2 from the coiled core 1 by displacing, and a steel strip constituting the coiled core 1 separated from the coil is sequentially separated from the outer peripheral side of the coiled core and carried out. Then, the winding core disassembling step of disassembling the winding core is performed, so that the winding core transformer can be mechanically dismantled. Therefore, since the transformer can be disassembled without touching the wound core transformer, even if insulating oil containing a harmful substance such as PCB adheres to the wound core transformer, the transformer can be disassembled. Can be safely dismantled.

In the above example, when the wound core is disassembled, the wound core is fixed, and the steel strip constituting the wound core is sequentially peeled off from the outer peripheral side. The method of doing is not limited to the above example, for example,
The wound core may be disassembled into individual steel strips by rotating the wound core while the steel strip on the outer peripheral side of the wound core is attracted.

In the above-described example, a vacuum device is used as the suction device for sucking the steel strip. However, an electromagnet may be used as the suction device.

When an electromagnet is used as the suction device, there is a possibility that a plurality of steel strips may be sucked at one time. However, when a vacuum device is used as the suction device, one steel strip may be used. Since it is possible to adsorb the steel sheets one by one, it is possible to eliminate the possibility that a plurality of steel strips are separated when the wound core is disassembled.

[0082]

As described above, according to the present invention, by inserting a wedge between a pair of coils of a wound core transformer and displacing both coils in a direction to separate them, one yoke of the wound core is displaced. After the part is cut off at the joint part and the one yoke part is separated into the first and second yoke halves, a mold is respectively attached to the first yoke half and the second yoke half. The winding core and the coil were displaced relative to each other in the axial direction of the coil in a state where the bending of each half of the yoke was corrected, so that the coil and the winding core could be connected without touching the transformer. Can be easily separated.

As described above, according to the present invention, it is possible to disassemble the wound core transformer without touching the transformer, so that the wound core transformer contains insulating oil containing harmful substances such as PCB. There is an advantage that the transformer can be safely disassembled even when the transformer is attached.

In the present invention, when the steel strip constituting the wound core is separated from the outer peripheral side sequentially and the wound core is disassembled, each steel strip can be washed individually. There is an advantage that the insulating oil adhering to the wound core can be completely removed.

Further, in the dismantling device of the wound core transformer according to the present invention, when a magnetizing means for magnetizing the laminated ends of the wound core to the same polarity and an exciting device for vibrating the iron core holding table are provided, Since the steel strips in the laminated state can be separated from each other or the laminated state can be loosened, the winding core can be easily disassembled.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration example of a disassembly apparatus according to the present invention.

FIG. 2 is a perspective view of a main part showing a configuration example near a transformer positioning and fixing part of the disassembly apparatus according to the present invention.

FIG. 3 is a perspective view of a main part showing a state in which a yoke part separating step is being performed in the dismantling apparatus according to the present invention.

FIG. 4 is a perspective view of a main part showing a state in which the yoke portion of the wound core is held by the holding device of the iron core pull-out drive mechanism in the dismantling device according to the present invention.

FIG. 5 is a perspective view of a main part showing a state where the bending of the yoke half of the wound core is corrected in the dismantling device according to the present invention.

FIG. 6 is a perspective view of a main part showing a state when the correction mold is started to be inserted between the yoke halves of the wound iron core in the dismantling apparatus according to the present invention.

FIG. 7 is a perspective view of a main part showing a state in which the correction mold is inserted between the yoke halves of the wound core in the dismantling apparatus according to the present invention.

FIG. 8 is a perspective view of a main part showing a state when the wound core is disassembled in the dismantling device according to the present invention.

FIG. 9 is a perspective view of a main part showing a state in which the steel strip is separated from the wound core and discharged in the dismantling device according to the present invention.

FIG. 10 is an exploded perspective view showing an example of a wound iron core transformer disassembled by the disassembly method of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Winding core, 1c ... One yoke part, 1c1 ... First yoke half part, 1c2 ... Second yoke half part, 2 ... Coil, 15 ... Work table, 15A ... Transformer positioning fixing part, 17: Transformer supply device, 18: Transformer positioning device, 21: Winding core joint separating device, 24: Wedge, 25: Yoke half correction device, 26
... Correcting mold, 27 ... Correcting mold drive mechanism, 28, 29
... Correction presser dies, 30, 31 ... Mold drive mechanism, 38 ...
Iron core holding table, 66: steel strip adsorption device, 68: steel strip transfer device.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Keiichi Takase 2-1-11, Tagawa, Yodogawa-ku, Osaka-shi, Japan Daihen Co., Ltd. (72) Masatake Komon 2-1-1, Tagawa, Yodogawa-ku, Osaka-shi, Osaka No. 11 Daihen Co., Ltd. F-term (reference) 4D004 AA22 AC05 BA05 CA02 CA12 CB50

Claims (9)

[Claims] 1. A steel strip laminate comprising a pair of legs and a pair of yoke portions connecting one end side and the other end side of each of the two leg portions. A method for dismantling a wound core transformer comprising a wound core provided with a joint for joining both ends of a band, and a pair of coils wound around pairs of legs of the wound core, respectively, By inserting a wedge between the coils and displacing the two coils in a direction to separate them, the one yoke portion of the wound core is cut off at a joint, and the one yoke portion is connected to the first yoke half. And a second yoke half separating step, and a first yoke half and a second yoke half forming one yoke of the wound iron core, respectively. Applying a mold to correct the bending of each yoke half; and a step of correcting the bending of the coil and each yoke half. A coil core separating step of separating the coil and the coil core by relatively displacing the coil core with the coil core in the axial direction of the coil. 2. A steel strip laminate comprising a pair of legs and a pair of yoke portions connecting one end side and the other end side of each of the two leg portions. A method for dismantling a wound core transformer comprising a wound core provided with a joint for joining both ends of a band, and a pair of coils wound around pairs of legs of the wound core, respectively, By inserting a wedge between the coils and displacing the two coils in a direction to separate them, the one yoke portion of the wound core is cut off at a joint, and the one yoke portion is connected to the first yoke half. And a second yoke half separating step, and a first yoke half and a second yoke half forming one yoke of the wound iron core, respectively. Applying a mold to correct the bending of each yoke half; and a step of correcting the bending of the coil and each yoke half. A coil core separating step of separating the coil and the wound core by relatively displacing the wound core with respect to the axial direction of the coil; and winding the steel strip constituting the wound core separated from the coil. A core disassembling step of disassembling the core by separating the core from an outer peripheral side thereof and carrying out the core sequentially. 3. The step of straightening the yoke portion comprises the steps of: inserting a straightening die between first and second half halves of the core of the wound core; The first and second yokes are pressed against the yoke half by pressing the straightening presser die from the outside, and the first and second yoke halves are pressed against the straightening die by the presser die. The method for dismantling a wound iron core transformer according to claim 1 or 2, comprising a step of correcting a bending of the iron half. 4. The winding core disassembling step is a step of adsorbing steel strips constituting the winding core one by one and displacing them in a direction to separate them from other steel strips in a stacked state. 4. The method for dismantling a wound iron core transformer according to claim 2, wherein a step of displacing the steel strip in a direction in which the steel strip is separated from another steel strip in a laminated state is repeated. 5. A steel strip laminate having a pair of legs and a pair of yoke portions connecting one end side and the other end side of each of the two leg portions, and the lamination is formed on one of the yoke portions. A winding core transformer disassembling apparatus for disassembling a winding core transformer including a winding core provided with a joint for joining both ends of a body, and a pair of coils wound around pairs of legs of the winding core, respectively. A transformer holding surface for holding a core transformer to be dismantled in a state where the laminated surface of the core is substantially horizontal, and the other joint of the core of the transformer held on the transformer holding surface. A workbench provided at one end with a transformer positioning and fixing portion having a pair of fixing blocks disposed so as to face each other in a direction perpendicular to the axial direction of the pair of coils with an iron portion therebetween; A transformer supplying device for supplying a wound core transformer to be provided to one end of the worktable; and the transformer. The winding core transformer supplied to one end side of the worktable by the supply device is advanced to the fixed block side, and the other yoke portion of the winding core of the transformer is inserted between the pair of fixed blocks. At the same time, the ends of the pair of coils are brought into contact with the pair of fixed blocks,
A transformer positioning device for positioning and fixing the wound core transformer to be disassembled to the transformer positioning and fixing portion; and a first set above a pair of coils of the transformer positioned and fixed to the transformer positioning and fixing portion. A wedge provided so as to be displaceable between a position and a second position inserted between the pair of coils; and a wedge between the first position and the second position. A wedge drive mechanism for displacing between the pair of coils, displacing the wedge to the second position, and inserting the wedge between the pair of coils. A winding core joint separating device for separating one yoke portion at the joint portion and separating the one yoke portion into a first yoke half portion and a second yoke half portion; And one of the winding cores A straightening position in which the core is inserted between the first and second yoke halves of the wound core transformer in a state where the first and second yoke halves are separated from each other; And a correction mold provided so as to be displaceable between a retreat position which is in a state of being separated from the second yoke half, and the correction mold between the correction position and the retreat position. A straightening mold driving mechanism for displacing between the first and second straightening halves of the wound iron core; A presser die, and first and second correction presser die driving mechanisms for displacing the first and second correction presser dies toward the first and second yoke halves, respectively. And providing the first and second correction presser dies with the first and second yoke in a state where the correction die is inserted between the first and second yoke halves. The first and second yoke halves are pressed against the correction mold side by first and second correction presser dies by abutting the first and second yoke halves from the outside, and the first and second yokes are pressed. A device for correcting the bending of the yoke half, a core holding table disposed further forward than the fixing block of the transformer positioning fixing part of the work table, and the yoke half correction The first and second yoke halves are straightened by the device to hold the other yoke portion of the wound iron core in a straightened state, while displacing the wound iron core toward the iron core holding base to contact the fixed block. And a core pulling-out drive mechanism for pulling out the coil from which it is in contact and moving the core onto the iron core holding base. 6. A laminate of steel strips, comprising a pair of legs and a pair of yoke portions connecting one end and the other end of each of the two legs, respectively. A winding core transformer disassembling apparatus for disassembling a winding core transformer including a winding core provided with a joint for joining both ends of a body, and a pair of coils wound around pairs of legs of the winding core, respectively. A transformer holding surface for holding a core transformer to be dismantled in a state where the laminated surface of the core is substantially horizontal, and the other joint of the core of the transformer held on the transformer holding surface. A workbench provided at one end with a transformer positioning and fixing portion having a pair of fixing blocks disposed so as to face each other in a direction perpendicular to the axial direction of the pair of coils with an iron portion therebetween; A transformer supply device for supplying a winding core transformer to be provided to one end of the work table; and the transformer. The winding core transformer supplied to one end side of the worktable by the supply device is advanced to the fixed block side, and the other yoke portion of the core of the transformer is inserted between the pair of fixed blocks. A transformer positioning device for abutting the ends of the pair of coils against the pair of fixing blocks to position and fix the wound iron core transformer to be dismantled to the transformer positioning and fixing portion; and the transformer positioning and fixing portion. Provided so as to be displaceable between a first position set above a pair of coils of a transformer fixed and fixed to the second position inserted between the pair of coils. And a wedge drive mechanism for displacing the wedge between the first position and the second position, displacing the wedge to the second position, and between the pair of coils. By inserting it, the positioning fixing part A winding for separating the one yoke portion of the fixed core of the transformer at the joint portion and separating the one yoke portion into a first half yoke and a second half yoke. An iron core joint separating device, a core winding transformer arranged in a transformer positioning fixing part of the worktable, and one yoke part of the core wound being separated into first and second yoke halves; Between a straightening position inserted between the first and second yoke halves of the vessel and a retracted position separated from the first and second yoke halves. A correcting die provided so as to be displaceable, a correcting die driving mechanism for displacing the correcting die between the correcting position and the retracted position, and a first yoke half of the wound core First and second correction presser dies disposed on the side of the section and on the side of the second yoke half, respectively, and the first and second correction presser dies. And a first and second correction presser die driving mechanism for displacing the first and second yoke halves, respectively, between the first and second yoke halves. The first and second correction yokes are brought into contact with the first and second yoke halves from the outside while the correction die is inserted, so that the first and second yoke are brought into contact with each other. A yoke half correction device that corrects the bending of the first and second yoke halves by pressing the half against the correction die side with first and second correction presser dies, An iron core holding table disposed further forward than the fixing block of the transformer positioning and fixing portion of the work table; and a bending of the first and second yoke halves corrected by the yoke half correcting device. By displacing the wound core toward the iron core holding table while holding the other yoke portion of the wound core, the fixed core is brought into contact with the fixed block. A core pulling-out drive mechanism for pulling out the coil and moving it onto the iron core holding base; and a steel strip forming the wound core moved onto the iron core holding base is sequentially peeled off from the outer peripheral side of the wound core and carried out. And a winding core disassembling device for disassembling the winding core. 7. A steel strip adsorbing device for adsorbing steel strips constituting a core held on the iron core holding plate one by one from an outer peripheral side of the core, the steel strip adsorbing apparatus comprising: An adsorbing device moving mechanism for moving the adsorbing device in a direction away from the core; and a steel strip adsorbed by the adsorbing device and moved by the adsorbing device moving mechanism is separated from the core held on the core holding table. 7. A dismantling device for a core-core transformer according to claim 6, further comprising: a steel strip transfer device for transferring in a direction. 8. The winding core disassembling apparatus further comprises a magnetizing means for magnetizing the laminated ends of the steel strip constituting the winding core held on the iron core holding base to have the same polarity. The winding core transformer disassembly apparatus according to claim 6. 9. The winding core transformer disassembly apparatus according to claim 6, further comprising an excitation device for applying vibration to the core holding table.