JP2005286169A - Manufacturing method and apparatus of wound core for transformer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the manufacturing method and the apparatus of a wound core for transformers, wherein the method can be executed even though without using a reshape holding frame engaged with the outer periphery of a wound core element body. <P>SOLUTION: The manufacturing method of a wound core for transformers has a process of winding predetermined times the thin strip of a silicon steel plate, and deforming it in the form of an ellipse to create a wound core elementary body 2, a process of sandwiching the respective two side portions opposed to each other of the wound core elementary body 2 between sandwiching reshape jigs 7, 7 including the outside and the inside reshape jigs 4, 4, 5, 5, and a process of hanging the resultant intermediate by a hanger 8 via one of the sandwiching reshape jigs 7, 7 to anneal it. By this manufacturing method, a wound core 1 can be manufactured for transformers with proper dimensions and shape. When manufacturing another wound core having a different dimension from the wound core 1, inside reshape jigs are prepared, in response to the dimension of the other wound core; and the outside reshape jigs 4, 4 are used in common to be able to reshape the other wound core, having dimensions different from those of the wound core 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a method for manufacturing a wound core of a transformer configured by winding a silicon steel sheet ribbon and a manufacturing apparatus therefor.

FIG. 12 shows a shaping state of a wound core of a conventional transformer. In the manufacture of the wound core, as shown in FIG. 12, the wound iron core body 101 obtained by cutting the silicon steel strip every turn and winding it into a circular shape is elliptically shaped by a press molding machine or the like (not shown). The octagonal shaping metal core 103 is fitted in the hole 102. Then, the upper, lower, left, and right sides of the wound core body 101 are pressed into a rectangular shape by a press molding machine or the like, and the shaped holding frame 104 is fitted to the outer periphery of the wound core body 101 in order to maintain this rectangular state. In this way, the wound core body 101 is shaped. Further, by annealing the wound core body 101 in this state with an annealing furnace or the like, a wound core having a rectangular shape can be obtained even if the shaped holding frame 104 is removed (see, for example, Patent Document 1).
JP-A-8-97063

However, according to the prior art, the shaped holding frame 104 is fitted to the outer periphery of the wound core body 101 shaped into a rectangular shape, so that it is large, but the wound core has different dimensions (different capacities). In the case of manufacturing, there is a problem that it is necessary to prepare each shaping holding frame in accordance with each dimension, and the number of large shaping holding frames increases.
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method and an apparatus for manufacturing a wound core of a transformer that do not require the use of a shaped holding frame that is fitted to the outer periphery of the wound core body.

  According to the first aspect of the present invention, each of the corresponding two sides of the wound core element body formed by winding the silicon steel sheet ribbon a predetermined number of times and having a substantially elliptical shape has a predetermined linear dimension. It is characterized in that it is sandwiched with a shaping jig for clamping, the wound core element body is suspended through one of these shaping jigs for holding, and the wound core element body is annealed in this state. To do.

  In the invention according to claim 2, one of the corresponding two sides of the wound core element body formed by winding the silicon steel sheet ribbon a predetermined number of times and having a substantially elliptical shape is connected to a predetermined straight line. Nipping with a shaping jig for clamping so that the dimension is the same, and the winding through the shaping jig for clamping so that the height from the mounting reference surface to the upper surface of the one side is a predetermined height. While holding the core element body, a repositioning shaping jig is installed on the upper surface of the other side part corresponding to the one side part of the wound core element body, and the wound core element body is annealed in this state. It was made to do.

  According to the invention of claim 3, each of the corresponding two sides of the wound core element body formed by winding the silicon steel sheet ribbon a predetermined number of times and having a substantially elliptical shape has a predetermined linear dimension. As shown in the figure, a window shaping jig for securing a predetermined linear dimension of these two sides is arranged between the corresponding two sides of the one not sandwiched with the shaping jig for holding, In this state, the wound iron core body is shaped by applying a tensile force in a direction away from each other to the holding jig, and then the wound iron core body is annealed.

  According to the invention of claim 4, each of the corresponding two sides of the wound core element body formed by winding the silicon steel sheet ribbon a predetermined number of times and having a substantially elliptical shape has a predetermined linear dimension. As shown in the figure, a window shaping jig for securing a predetermined linear dimension of these two sides is arranged between the corresponding two sides of the one not sandwiched with the shaping jig for holding, In this state, one side of the two sides that are not sandwiched is installed on the installation surface, corner shaping jigs are installed on both sides of the installation side, and the other of the two sides that are not sandwiched is installed. An anti-stop shaping jig is installed on the upper surface of the side portion, and the wound core element body is annealed in this state.

  According to the fifth aspect of the present invention, each of the two corresponding sides of the wound core element body formed by winding the silicon steel sheet ribbon a predetermined number of times and formed in a substantially elliptical shape is divided into the inner shaping jig and the outer side. A holding shaping jig that secures a predetermined linear dimension by sandwiching with a shaping jig, and a holding means for holding the wound iron core body through one of these holding shaping jigs, And an annealing means for annealing the wound core body while being held by the holding means.

  According to the invention described in claim 6, one side of the two corresponding sides of the wound core element formed by winding the silicon steel sheet ribbon a predetermined number of times and formed in a substantially elliptical shape is arranged on the inner side. A clamping jig that secures a predetermined linear dimension by being sandwiched between a shaping jig and an outer shaping jig, and a predetermined height dimension from the mounting reference surface to the upper surface of the one side portion As described above, the suspension means for suspending the wound core element body through the holding shaping jig, and the other side corresponding to the one side portion of the wound core element body suspended by the suspension means An anti-stop shaping jig installed on the upper surface of the side portion and an annealing means for annealing the wound core body while being suspended by the suspension means. .

  According to the ninth aspect of the present invention, each of the corresponding two sides of the wound core element body formed by winding the silicon steel sheet ribbon a predetermined number of times and formed in a substantially elliptical shape is arranged on the inner shaping jig and the outer side. A clamping jig for securing a predetermined linear dimension by being sandwiched between the shaping jigs and the corresponding two sides of the wound core body that are not sandwiched, and these two sides A window shaping jig for securing a predetermined linear dimension, a tension shaping means for shaping the wound core body by applying a tensile force in a direction away from the clamping jig, and the wound core And an annealing means for annealing the element body.

  According to the invention of claim 10, each of the two corresponding sides of the wound core element body formed by winding the silicon steel sheet ribbon a predetermined number of times and formed in a substantially elliptical shape is divided into the inner shaping jig and the outer side. A clamping jig for securing a predetermined linear dimension by being sandwiched between the shaping jig and the corresponding two sides of the wound core body that are not sandwiched, and these two sides The window shaping jig for securing a predetermined linear dimension and both sides of the installation side part in a state where one side part of the winding core body that is not sandwiched is installed on the installation surface A corner shaping jig disposed on the upper portion, an anti-stop shaping jig disposed on the upper surface of the other side portion of the two non-nipping sides, and an annealing means for annealing the wound core body. It is characterized by comprising.

  According to the present invention, a winding core of a transformer is manufactured with a configuration in which two corresponding sides of a wound core body are sandwiched and suspended by a shaping jig for sandwiching and further annealed in that state. can do. Therefore, it is not necessary to use a conventional shaped holding frame. (Claims 1 and 5)

  According to the present invention, one side of the wound core element body is nipped and hung by a shaping jig for holding, and a repositioning shaping jig is used on the upper surface of one side of the wound core element body, The winding core of the transformer can be manufactured by a configuration that only anneals in that state. Therefore, the same effects as those of the first and fifth aspects of the invention can be obtained, and in particular, the height dimension of the wound iron core can be made predetermined. (Claims 2 and 6)

  According to the present invention, the corresponding two side portions of the wound core body formed in a substantially elliptical shape are sandwiched by the sandwiching shaping jig and the window shaping treatment between the two sides that are not sandwiched. A jig is disposed on one upper surface of the two sides that are not sandwiched, and the corner is shaped on both sides of the other side of the two sides that are not sandwiched. By installing a jig and annealing in that state, a wound core of the transformer can be manufactured. Therefore, the same effect as in the first and fifth aspects of the invention can be obtained. (Claims 4 and 10)

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
In FIG. 1, the wound iron core 1 is formed in a substantially rectangular shape including a leg portion 1 a indicating a long side portion, a yoke portion 1 b indicating a short side portion, and an inclined corner portion 1 c that connects between them. Specifically, it is formed in an octagon (polygon), and the inner space forms a window portion 1d.
For example, as a single-phase transformer, a primary winding is wound around one leg 1a of the wound iron core 1, and a secondary winding is wound around the other leg 1a to constitute a transformer body. .

Next, the manufacturing method by the manufacturing apparatus of the wound iron core 1 is demonstrated, referring FIG.
In FIG. 2, the wound core element 2 is a one-turn cut method in which a silicon steel sheet ribbon is cut at one place every turn, and has a circular shape with a predetermined dimension and a cross-sectional area with a predetermined thickness. What is wound a predetermined number of times is fixed by a fixed band 3.

  FIG. 3 shows the wound core 1 after shaping. First, in order to shape as shown in FIG. 3, the corresponding two portions of the wound core body 2 shown in FIG. 2 are pressed by a press or the like, thereby deforming the wound core body 2 into a substantially elliptical shape. . In this state, a rectangular plate-shaped outer shaping jig 4, on the outer side of each of the corresponding two sides (corresponding to the shaped yoke portions 1b, 1b) of the wound core body 2 formed in a substantially elliptical shape. 4, inner shaping jigs 5, 5 are arranged inside each, and the corresponding outer shaping jigs 4, 4 and the inner shaping jigs 5, 5 are connected by two bolts 6 or the like. Thus (the outer and inner shaping jigs 4 and 5 and the bolts 6 and the like constitute the clamping shaping jig 7), the corresponding two sides of the wound core body 2 are held. As shown in FIG. 4, the inner shaping jig 5 includes a corner shaping surface (corner) for shaping the yoke portion shaping surface 5a having the linear dimension of the shaped yoke portion 1b and the shaped corner portion 1c. (Shaping portion) 5b, 5b. In addition, one side part of the corresponding two sides of the wound core element body 2 is a side part where portions cut when the silicon steel sheet thin body is wound (joint part) are gathered. By holding the sides with the outer and inner shaping jigs 4 and 5, it is possible to prevent them from being scattered at the same time.

  Then, in the state where the entire wound core element body 2 is suspended by a suspension device (corresponding to a suspension means) 8 formed of a heat-resistant material via one outer shaping jig 4. Annealing is performed in a non-annealing furnace (corresponding to annealing means). This annealing is performed to remove distortion generated inside during the shaping process of the wound core element body 2, and the wound core element body 2 during annealing is heated to about 800 ° C., so that silicon, which is an iron core material, is used. The rigidity of the steel sheet decreases. Then, as shown in FIG. 3, the two sides of the wound core body 2 that are not sandwiched are pulled linearly by the weights of the holding shaping jig 7 and the wound core body 2 so that the legs 1 a and 1 a The yoke portions 1b and 1b and the four corner portions 1c are shaped by the pressing force of the outer and inner shaping jigs 4 and 5 and the dead weight. And the winding iron core 1 of a predetermined dimension shape can be obtained by removing the shaping jigs 7 and 7 for clamping after annealing.

  As described above, each of the corresponding two sides of the wound iron core body 2 obtained by winding the silicon steel sheet ribbon a predetermined number of times and deforming into an elliptical shape is held by the holding jigs 7 and 7 for holding. Then, the winding core of the transformer having a favorable size and shape is manufactured by a method of suspending and annealing the wound core body 2 by one of the holding shaping jigs 7 and 7 by the suspension device 8. 1 can be manufactured. Also, when manufacturing a wound core having a dimension different from that of the wound core 1, an inner shaping jig is prepared according to the dimension of the wound core, and the outer shaping jigs 4 and 4 are used in common. Different wound cores can be shaped.

  According to such a configuration, there is no need to use a shaping holding frame that fits on the outer periphery of the conventional wound core body, and an inner shaping jig that matches the dimensions is prepared as a replacement jig. Therefore, the workability in the manufacture of the wound core can be improved and the number of shaping jigs can be reduced.

(Second Embodiment)
FIG. 5 shows a second embodiment of the present invention. In FIG. 5, the same components as those in the first embodiment are denoted by the same reference numerals, and different points will be described below.

  In the first embodiment, two holding jigs 7 and 7 are used. However, in this second embodiment, the inner side of the corresponding two sides of the wound core body 2 is the same. One of the side portions is sandwiched and suspended by the sandwiching shaping jig 7. In this case, a pedestal 10 is installed on the floor surface of the annealing furnace, and one side (an upper yoke after shaping) sandwiched from an upper surface (corresponding to a mounting reference surface) 10a of the pedestal 10 is provided. The core body 2 is suspended by the suspension device 8 via the outer shaping jig 4 in a state in which the height dimension H up to the upper surface of the core 1 is set to a predetermined height dimension of the wound core 1. Is done. Then, on the upper surface of the other side of the corresponding two sides of the wound iron core strip 2, a recoil shaping jig 9 is installed. The rebound shaping jig 9 has substantially the same shape as the inner shaping jig 5, and a yoke shaping surface 9a for shaping the yoke portion 1b and the corner portion 1c and a corner shaping surface as a corner shaping portion. 9b. Then, annealing is performed in a state where the anti-resisting shaping jig 9 is installed (in this state, the other side corresponding to the wound core body 2 is not in contact with the base 10). Then, as shown in FIG. 5, the rigidity of the wound core body 2 is lowered, and the wound core body 2 is pulled in a straight line by the weight of the recoil shaping jig 9 and the wound core body 2. 1a, 1a is shaped and deformed until the bottom surface of the other two sides of the wound core body 2 comes into contact with the pedestal 10 by the weight of the rebound shaping jig 9 and the own weight of the wound core body 2, Due to the weight of the shaping jig 9, a pressing force is applied between the wound core elements 2, and the yoke portion 1 b is shaped and the corner portion 1 c is shaped according to the shape of the recoil shaping jig 9. The And the wound core 1 shape | molded by the predetermined dimension as shown in FIG. 1 can be obtained.

  As described above, one side of the corresponding two sides of the wound iron core body 2 formed by winding a silicon steel sheet ribbon a predetermined number of times and having an elliptical shape is held by the holding jig 7 for holding. Then, it is suspended by the suspension device 8 so that a predetermined height dimension H is obtained from the upper surface of the pedestal 10 as the mounting reference surface to the upper surface of the one side portion via the holding jig 7. And having a good dimensional shape by a manufacturing method in which an anti-sticking shaping jig 9 is disposed on the upper surface of the other side portion corresponding to the one side portion of the wound core body 2 and annealed. A wound core of a transformer can be manufactured. Further, when manufacturing a wound core having a size different from that of the wound core 1, an inner shaping jig and a recoil shaping jig are prepared according to the dimension of the wound core, and the outer shaping jig 4 is used in common. Thus, wound cores with different dimensions can be shaped.

According to such a configuration, the same effect as in the first embodiment can be obtained. In particular, according to the second embodiment, the wound core element is formed such that the height dimension from the upper surface of the base 1 to the upper surface of one side portion of the wound core element body 2 is a predetermined height dimension H. Since the body 2 is suspended, the lower side of the wound core body 2 is received by the upper surface of the pedestal 10 when the height dimension of the wound core body 2 becomes H (extends) during annealing. Thus, further extension is prevented, so that the height dimension of the wound core 1 can be reliably defined to a predetermined height dimension H.
In the second embodiment, the upper surface of the pedestal 10 is used as the mounting reference surface. However, the pedestal 10 may be omitted, and the floor surface of the annealing furnace may be used as the mounting reference surface instead.

(Third embodiment)
6 and 7 show a third embodiment of the present invention. In the first embodiment, the same parts are denoted by the same reference numerals, and different parts will be described below.

  As shown in FIG. 6, the inner shaping jig 11 instead of the inner shaping jig 5 is formed in a convex shape and has corner shaping portions 11b and 11c in addition to the yoke portion shaping surface 11a. The inner shaping jig 11 constitutes a holding shaping jig 12 together with the outer shaping jig 4, the bolt 6, and the like. FIG. 7 shows a wound iron core shaped by applying the inner shaping jig 11. In the wound iron core 1 shown in FIG. 7, the corner portion 1c is shaped by both corners of the corner shaping portions 11b and 11c.

  According to such a configuration, the inner shaping jig 11 has a convex shape and has the corner shaping portions 11b and 11c, whereby the corner portion 1c of the wound core 1 can be shaped, and the first Since the corner shaping surface 5b of the inner shaping jig 5 of the embodiment is cut to form the corner shaping portions 11b and 11c, the weight can be reduced as compared with the inner shaping jig 5.

(Modification)
Since the inner shaping jig may have a configuration corresponding to the corner shaping portions 11b and 11c, inner shaping jigs 13 and 14 as shown in FIGS. 8 and 9 may be used. In this case, the yoke portion shaping surfaces 13 a and 14 a and the corner shaping portions 13 b and 14 b and 13 c and 14 c correspond to the yoke portion shaping surface 11 a and the corner shaping portions 11 b and 11 c of the inner shaping jig 11.
Moreover, although the example applied to the inner shaping jig is shown in the above-described modification, it may be applied to a rebound shaping jig having substantially the same shape as the inner shaping jig.

(Fourth embodiment)
FIG. 10 shows a fourth embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and different points will be described below.

  Instead of the inner shaping jig 5 used in the first embodiment, a rectangular plate-shaped inner shaping jig 15 is used to form a clamping shaping jig 16, and further, the sandwiching in the wound core element body 2 is performed. Of the leg 1a after shaping of the wound core body 2 on the corresponding two sides (corresponding to between the leg parts 1a, 1a of the wound core 1 after shaping) corresponding to the side not held by the shaping jigs 16, 16 A plurality of, for example, two window shaping jigs 17 and 17 are arranged side by side so as to have a required predetermined linear dimension. The window shaping jig 17 is configured by laminating rectangular silicon steel plates, and the laminated steel plates are provided with rod holes 17b for inserting rod members 17a. Therefore, the window shaping jig 17 can change the height by overlapping the silicon steel plates by inserting the bar member 17a into the bar hole 17b, and the interval dimension between the window shaping jigs 17 and 17 can be changed. By changing, it can be used in combination so as to have a predetermined dimension required for the leg 1a after shaping. Then, by applying a tensile force in a direction in which the corresponding two sides are separated from each other through the respective outer shaping jigs 4 and 4 by a tension machine (not shown) (corresponding to a tension means), the wound core body 2 is plastic It is transformed and shaped. In this state, the holding jigs 16 and 16 are arranged so as to be in contact with the floor of the annealing furnace, and annealing is performed. Then, since the two sides corresponding to the leg portions 1a and 1a after shaping do not move due to the frictional force due to the weight of the holding shaping jigs 16 and 16, there is no slack and the shaped shape is maintained. Furthermore, even if the window shaping jig 17 is thermally expanded due to a difference in linear expansion coefficient during annealing, the window shaping jig 17 expands in the rolling direction because it is composed of laminated steel sheets. Therefore, the window shaping jig 17 expands in a direction to fill the space between the window shaping jig 17 and the inner shaping jig 15, and is extremely expanded in a direction that affects the shaped leg portions 1a and 1a. Few. And the distortion which arose inside the wound iron core element | base_body 2 can be removed, and the wound iron core 1 which has a predetermined dimension shape as shown in FIG. 1 can be manufactured.

As described above, each of the corresponding two sides of the wound core element 2 obtained by winding a silicon steel sheet ribbon a predetermined number of times and deformed into an ellipse is sandwiched between the outer and inner shaping jigs 4 and 15. The window shaping jigs 17 and 17 are arranged in combination so as to have predetermined linear dimensions of the two sides between the corresponding two sides which are sandwiched by the shaping jigs 16 and 16 and are not sandwiched, Winding with a good dimensional shape is performed by applying a tensile force in the direction in which the corresponding two sides are separated from each other through the respective outer shaping jigs 4 and 4 with a pulling machine or the like and then annealing. An iron core can be manufactured.
According to such a configuration, the same effect as in the first embodiment can be obtained.

(Fifth embodiment)
FIG. 11 shows a fifth embodiment of the present invention. The same parts as those in the fourth embodiment are denoted by the same reference numerals, and different points will be described below.
In the fourth embodiment, each of the two corresponding sides of the wound core body 2 is sandwiched by the clamping jigs 16 and 16 and the window between the corresponding two sides not sandwiched is provided. In the present embodiment, the holding jigs 17 and 17 are pulled by a pulling machine or the like. However, in this embodiment, the holding shaping jigs 16 and 16 and the window shaping jig are not pulled by using a pulling machine. In a state where the jigs 17 and 17 are provided, one side part (corresponding to one of the leg parts 1a after shaping) that is not sandwiched is placed on the upper surface (corresponding to the installation surface) 18a of the base 18. In the state, each side part (corresponding to the installation side part) of each side part (corresponding to a position for shaping the corner part 1c of the wound core 1) is formed in a triangular prism shape and has inclined surfaces 19a, 19a. The corner shaping jigs 19, 19 are arranged and the other side of the two sides that are not sandwiched (shape Of the upper surface of the corresponding) to the other leg portion 1a, in the state in which the anti-stopping fairing jig 20 for preventing warpage during annealing, performing annealing. During the annealing, the rigidity of the wound core body 2 is lowered. Therefore, as shown in FIG. 11, depending on the weight of the holding jigs 16, 16 and the wound core body 2, the wound core body 2. Is shaped along the shape of the inclined surface 19a of the corner shaping jig 19, and the corner portion 1c of the wound core 1 is shaped. Further, the corresponding non-nipping side portion of the wound core body 2 is pressed by the weight of the window shaping jig 17 and the anti-return shaping jig 20, and the leg 1a as the wound core 1 is shaped. Is done.

As described above, the corresponding two sides of the wound core body 2 formed in a substantially elliptical shape obtained by winding a silicon steel sheet ribbon a predetermined number of times and deforming into an elliptical shape are respectively connected to the outer and inner shaping jigs 4 and The window shaping jigs 17, 17 are sandwiched between the corresponding two sides that are not held by the holding shaping jigs 16, 16 including 15 so as to have a predetermined linear dimension of these two sides. In this state, one of the two sides that are not sandwiched is placed on the pedestal 18 that is the installation surface, and corner shaping jigs 19 and 19 are placed on both sides of the one side. Then, the wound core 1 having a favorable dimensional shape can be manufactured by annealing in a state in which the anti-stop shaping jig 20 is installed on the upper surface of the other side of the two sides not sandwiched. .
Even with such a configuration, the same effects as those of the first embodiment can be obtained.

(Other embodiments)
In the above embodiment, the inner shaping members 5, 11, 13, and 14 are used. However, any configuration may be used as long as it has a corner shaping portion that can shape the corner of the wound core. Moreover, although the corner part 1c is comprised by the inclined surface, you may comprise it by a curve, In that case, a corner shaping part is made to form with a curved surface.

  In the fourth and fifth embodiments, the window shaping jig 17 is configured by laminating silicon steel plates and inserting the rod member 17a into the rod hole 17b. For example, according to the minimum unit window size. Then, a silicon steel plate may be laminated and fixed to form a reference block, and a window shaping jig may be used in which adjustment silicon steel plates are stacked and adjusted in accordance with the window size.

  Moreover, in the said embodiment, although the window shaping jig 17 was comprised by laminating | stacking a silicon steel plate, it was set as the structure divided | segmented into two and arrange | positioning according to the dimension of the leg part 1a, You may arrange | position according to the dimension of the leg part 1a with the above window shaping jig, and you may shape with one window shaping jig, without dividing | segmenting.

  In the fifth embodiment, the corner portion 1c of the wound core 1 is shaped using the triangular prism-shaped corner shaping jig 19 having the engaging slope 19a. However, instead of the inclined surface 19a, an arc shape is used. A wound iron core having an arcuate corner portion can be shaped using the corner shaping jig formed in the above.

The figure which shows the wound iron core of the 1st Embodiment of this invention Perspective view showing the wound core body Perspective view showing the wound iron core after shaping Perspective view showing inner shaping jig FIG. 3 equivalent view showing the second embodiment of the present invention FIG. 4 equivalent view showing the third embodiment of the present invention 3 equivalent diagram FIG. 6 equivalent diagram showing a modification FIG. 6 equivalent diagram showing a modification The top view which shows the wound iron core after shaping which shows the 4th Embodiment of this invention The side view which shows the wound iron core after shaping which shows the 5th Embodiment of this invention The figure which shows the shaping state of the wound core of a prior art example

Explanation of symbols

  In the drawings, 1 is a wound core, 2 is a wound core body, 4 is an outer shaping jig, 5, 11, 13, 14, and 15 are inner shaping jigs, 7, 12, and 16 are nipping shaping jigs, 8 is a suspension device (suspension means), 9 and 20 are anti-reform shaping jigs, 10 and 18 are pedestals, 10a is an upper surface (mounting reference surface), 18a is an upper surface (installation surface), 11b, 11c, Reference numerals 13b, 13c, 14b and 14c denote corner shaping portions, 17 denotes a window shaping jig, and 19 denotes a corner shaping jig.

Claims (10)

  Each of the two corresponding sides of the wound iron core body formed by winding a silicon steel sheet ribbon a predetermined number of times and having a substantially elliptical shape is narrowed with a clamping jig so as to have a predetermined linear dimension. And holding the wound core body through one of these clamping jigs, and annealing the wound core body in this state of the wound core of the transformer Production method.   One side of the corresponding two sides of the wound core body formed by winding the silicon steel sheet ribbon a predetermined number of times and having a substantially elliptical shape is held so as to have a predetermined linear dimension. And holding the wound core element body through the holding shaping jig so that the height from the mounting reference surface to the upper surface of the one side is a predetermined height. In addition, a recoil shaping jig is installed on the upper surface of the other side corresponding to the one side of the wound core body, and the wound core body is annealed in this state. A method for manufacturing a wound core of a transformer.   Each of the two corresponding sides of the wound iron core body formed by winding a silicon steel sheet ribbon a predetermined number of times and having a substantially elliptical shape is narrowed with a clamping jig so as to have a predetermined linear dimension. A window shaping jig for securing a predetermined linear dimension of these two sides is arranged between the corresponding two sides of the one that is held and not sandwiched, and in this state, the clamping jig for holding A method for manufacturing a wound core of a transformer, comprising applying a tensile force in a direction away from each other to shape the wound core body and thereafter annealing the wound core body.   Each of the two corresponding sides of the wound iron core body formed by winding a silicon steel sheet ribbon a predetermined number of times and having a substantially elliptical shape is narrowed with a clamping jig so as to have a predetermined linear dimension. A window shaping jig for securing a predetermined linear dimension of these two sides is arranged between the corresponding two sides of the one that is held and not held, and the two sides that are not held in this state are arranged. One side is installed on the installation surface, corner shaping jigs are installed on both sides of this installation side, and the non-holding shaping jig is mounted on the upper surface of the other side of the two sides And a method of manufacturing a wound core of a transformer, wherein the wound core body is annealed in this state. Each of the two corresponding sides of the wound core element body formed by winding a silicon steel sheet ribbon a predetermined number of times and formed in a substantially elliptical shape is sandwiched between an inner shaping jig and an outer shaping jig. A holding jig for securing the linear dimension of
Suspension means for suspending the wound core body through one of these clamping jigs;
An apparatus for manufacturing a wound core of a transformer, comprising: annealing means for annealing the wound core body in a state of being suspended by the suspension means. One side of the corresponding two sides of the wound core element body formed by winding a silicon steel sheet ribbon a predetermined number of times and having a substantially elliptical shape is formed by an inner shaping jig and an outer shaping jig. A clamping jig for securing a predetermined linear dimension by pinching;
A suspension means for suspending the wound core element body via the clamping jig so that a predetermined height dimension is obtained from the placement reference surface to the upper surface of the one side portion;
An anti-restraining shaping jig installed on the upper surface of the other side portion corresponding to the one side portion of the wound core body suspended by the suspension means;
An apparatus for manufacturing a wound core of a transformer, comprising: annealing means for annealing the wound core body in a state of being suspended by the suspension means.   The said inner side shaping jig comprised the corner shaping part which shapes a corner part, The manufacturing apparatus of the wound core of a transformer of Claim 5 characterized by the above-mentioned.   7. The apparatus for manufacturing a wound core of a transformer according to claim 6, wherein the inner shaping jig and the recoil shaping jig comprise a corner shaping portion for shaping a corner portion. Each of the two corresponding sides of the wound core element body formed by winding a silicon steel sheet ribbon a predetermined number of times and formed in a substantially elliptical shape is sandwiched between an inner shaping jig and an outer shaping jig. A holding jig for securing the linear dimension of
A window shaping jig that is disposed between two corresponding sides of the wound core body that are not sandwiched, and for securing a predetermined linear dimension of these two sides;
A tension shaping means for shaping the wound core body by applying a tensile force in a direction away from each other to the holding shaping jig;
An apparatus for manufacturing a wound core of a transformer, comprising an annealing means for annealing the wound core body. Each of the two corresponding sides of the wound core element body formed by winding the silicon steel sheet ribbon a predetermined number of times and formed in a substantially elliptical shape is sandwiched between the inner shaping jig and the outer shaping jig to obtain a predetermined value. A holding jig for securing the linear dimension of
A window shaping jig for securing a predetermined linear dimension of these two sides, which is installed between the two corresponding sides of the wound core body not sandwiched;
A corner shaping jig arranged on both sides of the installation side, with one side of the two sides not sandwiched between the wound core elements being installed on the installation surface,
An anti-restraining shaping jig disposed on the upper surface of the other side of the two sides not sandwiched;
An apparatus for manufacturing a wound core of a transformer, comprising an annealing means for annealing the wound core body.

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