JP5172767B2 - Winding device for multi-line multi-stage coil for transformer - Google Patents

Description

  The present invention relates to a multistage coil for a transformer used for a molded transformer by winding two or more flat rectangular wires in multiple stages, and a winding device for manufacturing the same.

  2. Description of the Related Art Conventionally, as a multi-stage coil for a transformer used in a molded transformer, a winding device for winding two or more rectangular wires in multiple stages and a multi-wire multi-stage coil for a transformer manufactured by the winding device have been provided. . When multiple flat electric wires are stacked in a disk shape in multiple stages and stacked in a cylindrical shape, the multiple flat electric wires supplied individually from the supply section are the curved part when the flat electric wire is wound into a disk in the molded part. The electric wire portion to be formed is rolled and formed in an overlapping state. The rectangular electric wire that has exited the forming portion is sent to the laminated portion. In the laminated portion, a plurality of flat electric wires supplied in an overlapped state are free from each other, particularly free in the longitudinal direction.

  For rectangular electric wires wound in a disc, the final winding shape is generally rectangular or circular. When the winding shape is a rectangular coil, it is relatively easy to restrain the flat wire in the longitudinal direction at each corner, but when the final winding shape is a circular coil, the corner portion as in the case of a rectangular coil is used. Does not exist, and there is nothing that restrains each flat electric wire in its longitudinal direction. Therefore, there may be a problem in product quality management, such as whether or not the stacked rectangular electric wires are aligned in the longitudinal direction, or whether the stacked lengths are sufficiently aligned.

  As described above, a multi-wire multi-stage coil and a winding device for winding a plurality of flat wires (coil wires) using a plurality of flat wires (coil wires) have been proposed in order to cope with an increase in capacity of the molded transformer. When using the, even if a plurality of molded parts are molded in the same way, when laminating in the laminating part after that, because the plurality of molded rectangular electric wires will fall apart, it is very difficult to laminate in the normal state, The work takes a lot of time, and the multistage coil results in an expensive product.

  Patent Document 1 discloses a multistage coil manufacturing apparatus that manufactures a multistage coil by winding a rectangular electric wire proposed by the present applicant into a rectangular shape. This multi-stage coil manufacturing apparatus includes a pair of rolling rollers that face each other in the plate thickness direction of a rectangular electric wire and sandwich and roll the rectangular electric wire, a stock portion that receives the rolled rectangular electric wire, and a rolling roller that controls the clamping angle of the rolling roller Control section, repeat the curve section that is the corner of the flat wire and the straight section that is the side, and gradually increase the radius of curvature when winding from the inner circumference side to the outer circumference side. When winding around the circumference side, gradually reduce the radius of curvature, and at the moment of entering the linear part from the curved part, the rolling roller is parallel and parallel rolled to form the linear part, and the cross-sectional area of the linear part is the innermost circumference curve By making it substantially equal to the cross-sectional area of the portion, a rectangular multi-stage coil is efficiently and automatically manufactured.

Japanese Patent No. 3996005

Forming and laminating a set of multiple rectangular wires to make multi-stage coils cheaper and more efficient from a plurality of rectangular wires supplied in an unconstrained state, such as being supplied individually and stacked in the middle In doing so, it is necessary to constrain the rectangular wires without obstructing the winding operation in the same winding machine so that the laminated rectangular wires do not fall apart.
Therefore, when laminating a plurality of flat electric wires while winding them on a disc, the electric wire portion that becomes a curved portion when the disc is wound is maintained after being rolled and treated as if it were a single flat electric wire. There is a problem to be solved in terms of making this possible.

  An object of the present invention is to supply a plurality of rectangular electric wires individually without being constrained, such as being supplied individually. It is possible to provide a multi-wire multistage coil for a transformer and a winding device for the multi-wire multistage coil that can be manufactured at a lower cost even for a large-capacity molded transformer.

In order to solve the above problems, a winding device for a multi-wire multi-stage coil for a transformer according to the present invention holds a supply unit that individually supplies a plurality of flat wires and the plurality of flat wires in an overlapping state. Transformer provided with a restraining means, a forming part for rolling and forming an electric wire part that becomes a curved part when a flat electric wire is wound on a disk, and a laminated part for laminating the flat electric wire formed by the forming part in a disk shape. In the winding device for multi-wire multistage coil for dexterity, the forming part simultaneously forms a plurality of the flat electric wires superposed one above the other in a state in which the superposition state is constrained, and the laminated part is a plurality of is characterized in that the disc winding shape by product layer the rectangular electric wire of the present.

  Further, the multi-wire multi-stage coil for transformer according to the present invention is formed by stacking a plurality of rectangular electric wires superposed on each other while being wound by a disk, and the rectangular electric wires in the overlapping state are between the rectangular electric wires. It is characterized in that it is constrained so that misalignment that can occur in the above does not hinder the lamination.

  According to the multi-stage multi-stage coil for a transformer and the winding device thereof according to the present invention, when laminating in multiple stages by disk winding, at least two or more rectangular electric wires are constrained so as to hold the superimposed state. It can be handled in the same way as a single flat electric wire, and can be stacked and wound easily by being wound and stacked in a constrained state. As a result, the plurality of flat electric wires do not shift in the longitudinal direction.

In the transformer multi-wire multistage coil and the winding device thereof according to the present invention, the plurality of flat electric wires are wound with tape wound at a predetermined interval in the longitudinal direction, and mutually spaced at a predetermined interval in the longitudinal direction. The superposition state can be constrained by bonding with an adhesive or by mechanical coupling such as concave-convex fitting with a predetermined interval in the longitudinal direction.
In addition, the restraining position where the superposition state is restrained may be a variation in the circumferential position of the multi-stage coil wound around the disk. By varying the restraint positions at the circumferential positions of the multi-stage coil, it is possible to avoid an increase in coil height due to the multiple restraint positions overlapping at the same phase position. The variation of the restraining position in the circumferential position means that it is not necessary to overlap the same circumferential position in most disk windings, and the constraint position overlaps the same circumferential position after several disk windings. That is acceptable.
Furthermore, the plurality of flat electric wires can be stacked on a circular multi-stage coil or a rectangular multi-stage coil by the disk winding.

  According to the multi-wire multistage coil for a transformer and the winding device thereof according to the present invention, when a plurality of flat electric wires are stacked while being stacked and wound with a disk, the flat electric wires do not particularly shift in the longitudinal direction. In the same process as forming and laminating a single flat electric wire, high-quality forming and laminating of multiple flat electric wires becomes easy, and winding of a multi-stage coil in which multiple flat electric wires are stacked Although it is high quality, it can be realized at low cost. Moreover, since the capacity of the winding coil for the transformer can be increased, it is possible to expand the transformer to a large model. In addition, since it can be developed into a multi-line structure with more than two lines, it becomes possible to cope with a larger model. Furthermore, according to the present invention, by making the constraining process for a plurality of flat wires in-line, winding can be performed with the same winding time and man-hours as a single wire. Can be produced and provided.

The whole schematic plan view which shows the Example of the winding apparatus of the multistage coil for transformers by this invention. The whole schematic front view of the winding apparatus of the multistage coil for transformers shown in FIG. The whole schematic plan view which shows another Example of the winding apparatus of the multistage coil for transformers by this invention. The whole schematic front view of the winding apparatus of the multistage coil for transformers shown in FIG. The principal part explanatory drawing which shows the other Example of the winding apparatus of the multistage coil for transformers by this invention. The bird's-eye view which shows the Example of the multistage coil for transformers by this invention. The bird's-eye view which shows another Example of the multistage coil for transformers by this invention. The bird's-eye view which shows the other Example of the multistage coil for transformers by this invention.

  Hereinafter, embodiments of a multistage coil for a transformer and a winding device thereof according to the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view showing the overall outline of a winding device for a multistage coil for a transformer according to a first embodiment, and FIG. 2 is a front view of the winding device for a multistage coil for a transformer shown in FIG. The winding device shown in the first embodiment is a winding device that forms a multi-line multi-stage coil by constraining, forming, and laminating a plurality of rectangular electric wires with an adhesive so as not to be displaced.

  As shown in FIGS. 1 and 2, a plurality of rectangular electric wires 1A and 1B are set in the supply units 12A and 12B, respectively, and are individually fed out from the supply units 12A and 12B. A mechanism 2 for applying an adhesive or a pressure-sensitive adhesive is provided on the lower surface of the flat electric wire 1B. An adhesive (or adhesive) is applied to the surface. The flat electric wire 1B having the lower surface coated with an adhesive or a pressure-sensitive adhesive is passed through the leveler 5 while being superposed on the flat electric wire 1A. The leveler 5 removes the bending of the flat electric wires 1A and 1B and at the same time has an effect of bonding the flat electric wires 1A and 1B together. Thereafter, the plurality of overlapping rectangular electric wires 1 are sent to the forming unit 10 by the feeding unit 6. The forming unit 10 roll-forms an electric wire portion that becomes a curved portion when the flat electric wire 1 is wound around a disk. The rolled rectangular wire 1 is laminated on the laminated portion 11 in a disk shape.

  The adhesive serves as a restraining means that holds the overlapping state of the plurality of flat electric wires 1A, 1B, and the coating mechanism 2 serves as a restraining means application unit that applies such adhesive to the flat electric wires. Since the shaping | molding unit 10 and the lamination | stacking part 11 can respectively use the shaping | molding part and lamination | stacking part which were disclosed by previous patent document 1, detailed description here is abbreviate | omitted. The forming unit 10 simultaneously forms the rectangular electric wires 1A and 1B having the same shape and the same size as if they were one flat electric wire, and the laminated portion 11 maintains the state in which the flat electric wires 1A and 1B are overlapped and formed. It can be laminated while winding the disk as if it were one flat wire.

  FIG. 3 is a plan view schematically showing the whole of the winding device for a multi-stage coil for a transformer according to a second embodiment, and FIG. 4 is a front view of the winding device for the multi-stage coil for a transformer shown in FIG. The winding device shown in the second embodiment is a winding device that affixes a tape to a plurality of overlapping flat rectangular electric wires, constrains them so as not to shift, forms them, and laminates them to produce a multi-line multistage coil.

  As shown in FIGS. 3 and 4, a plurality of rectangular electric wires 1 </ b> A and 1 </ b> B are set in the supply units 12 </ b> A and 12 </ b> B, respectively, and are individually fed out from the supply units 12 </ b> A and 12 </ b> B. The flat electric wires 1A and 1B are passed through the leveler 5 to remove the bends, and the flat electric wires 1A and 1B are overlapped in the apparatus to form the flat electric wire 1. A flat wire restraining tape 7 is affixed to the lower portion of the lowermost flat electric wire 1 </ b> A instantly by the tape supply and affixing unit 3 to the flat electric wire 1. The rectangular electric wire restraining tape 7 is wound around the rectangular electric wire 1 by the tape side surface and upper surface attaching unit 4 and restricts the overlapping state of the rectangular electric wires 1A and 1B. Thereafter, the flat electric wire 1 is sent to the forming unit 10 by the feeding unit 6. The forming unit 10 roll-forms an electric wire portion that becomes a curved portion when the flat electric wire 1 is wound around a disk. The rolled rectangular electric wire 1 is laminated in a disk winding shape in the lamination part 11. Note that the flat wire restraint tape 7 can be made of the same material as the paper already used for fixing the transformer coil, so it naturally matches the characteristic test required during molding. is there.

  In Example 2, the rectangular electric wire restraining tape 7 serves as a restraining means for holding the state where the flat electric wires 1A and 1B are overlapped, and the tape supply and pasting unit 3 is a restraining means application unit. As the molding unit 10 and the laminated portion 11, the molded portion and the laminated portion disclosed in Patent Document 1 can be used, respectively. Further, the forming unit 10 and the laminated portion 11 can form the rectangular electric wires 1A and 1B having the same shape and the same size at the same time as if they were one flat electric wire, and laminate them while winding the disc.

  FIG. 5 is a diagram showing a main part of the winding device for a multi-stage coil for a transformer according to the third embodiment, and shows means for restraining the overlapping state of a plurality of flat rectangular wires. As shown in FIG. 5, the flat electric wire 1 </ b> A fed out from the supply unit 12 </ b> A (see FIG. 1 and the like) and the flat electric wire 1 </ b> B drawn out from the supply unit 12 </ b> B (see FIG. 1 and the like) are superimposed on each other. , And mechanically coupled by the caulking device 20. That is, the caulking device 20 includes a lower mold 21 having a convex portion 23 and an upper mold 22 having a flat surface 24 facing the convex portion 23. The lower mold 21, the upper mold 22, By sandwiching and pressing the flat electric wires 1A and 1B superimposed between the two, the convex portion 25 on the upper surface of the flat electric wire 1A is formed into a state of fitting into the concave portion 26 recessed on the lower surface of the flat electric wire 1B. The flat electric wires 1A and 1B are fixed by caulking. In the third embodiment, in the state where the flat electric wires 1A and 1B are overlapped, the fitting 27 between the convex portion 25 of the flat electric wire 1A and the concave portion 26 of the flat electric wire 1B is such that the flat electric wires 1A and 1B are particularly in the longitudinal direction. This is a restraining means for preventing displacement, and the caulking device 20 is a restraining means application section.

  FIG. 6 is a bird's-eye view showing an example of a multi-line multi-stage coil for a transformer according to the present invention. FIG. 6A is a diagram showing a multi-stage coil wound around a rectangular coil having a rectangular shape in plan view, and FIG. 6B is a diagram showing winding a disk around a circular circular coil in plan view. It is a figure which shows the made multistage coil. In these examples, the flat electric wire 1 in which the flat electric wires 1A and 1B are overlapped is an example in which the electric wires 1A and 1B are bonded with an adhesive, or an example in which the electric wires are restrained by mechanical uneven engagement such as caulking. It corresponds to. Both wires 1A and 1B are constrained as if they were one flat wire, and the same as winding a disc with a single flat wire without paying attention to the flat wires 1A and 1B falling apart. Thus, the disk can be wound. Reference numerals 8 and 9 in the figure indicate the stacking height of the multi-stage coil of the flat wire 1.

  FIG. 7 is a bird's-eye view showing an embodiment of a multi-wire multi-stage coil for a transformer in which stacked rectangular electric wires are constrained and laminated using a flat electric wire constraining tape 7. The flat wire restraining tape 7 is desirably thin as much as possible because the stacked heights 8 and 9 of the flat wire to be stacked are increased. However, as shown in FIG. 7, when the flat electric wire 1 is laminated, if the flat electric wire restraining tape 7 is concentrated at the same phase position (four phase positions in the figure) in each winding, the flat electric wire 1 is stacked. There is a problem that the heights 8A and 9A are increased and the coil height is increased.

  Therefore, in order to keep the coil height as low as possible, as shown in FIG. 8, when the flat wire 1 is laminated by the laminated portion 11, the flat wire restriction tape 7 is not concentrated at the same phase position of the disk winding. It is preferable to manufacture the tape supply and sticking unit 3 while controlling the position where the tape 7 for restraining the rectangular electric wire is stuck. Thereby, the stacking heights 8B and 9B of the flat electric wire 1 can be suppressed as low as possible.

  According to the present invention, at the time of laminating in multiple stages by disk winding, the state where at least two rectangular electric wires are superposed by the restraining means is maintained, so that the rectangular electric wires do not fall apart at the laminated portion, as if one It can be formed in the same manner as the rectangular electric wire, and can be laminated and wound on a disk. In addition, by constraining a plurality of flat wires in the winding machine, it is possible to show an advantage over the conventional one when considering the setup, etc. When restraining a plurality of flat wires, the restraining operation of the plurality of flat wires does not hinder an operation such as stopping a normal winding operation.

  In the molded transformer, when forming and laminating at least two electric wires in combination, the rectangular electric wires do not deviate from each other. Therefore, it is possible to manufacture a multi-stage coil corresponding to a transformer having a large capacity. By making inline the restraint of the flat wire, it can be wound with the same winding time and man-hours as a single wire, so it is possible to manufacture a cheaper multi-wire multistage coil and a transformer using it. .

1: Overlapped flat wire 1A: Flat wire 1B: Flat wire 2: Mechanism to apply adhesive or adhesive 3: Tape supply pasting unit 4: Tape side, top surface pasting unit 5: Leveler 6: Feed Unit 7: Tape for flat wire restraint 8: Flat wire height (rectangular coil)
8A: Flat wire stack height when rectangular wire constraining tape is concentrated (rectangular coil)
8B: Flat wire stack height (rectangular coil) when controlling the position of a flat wire restraint tape
9: Flat wire stack height (circular coil)
9A: Flat wire stacked height (circular coil) when flat wire constraining tape is concentrated
9B: Flat wire stack height (circular coil) when controlling the position of a flat wire restraint tape
DESCRIPTION OF SYMBOLS 10: Molding part 11: Laminating part 12A: Flat wire supply part 12B: Flat wire supply part 20: Caulking device 21: Lower mold 22: Upper mold 23: Convex part 24: Flat surface 25: Convex part of flat electric wire 1A 26: Recess of flat wire 1B

Claims (6)

Forming to supply a plurality of rectangular electric wires individually, a restraining means for holding the plural flat electric wires in an overlapped state, and rolling forming an electric wire portion that becomes a curved portion when the flat electric wires are wound into a disk And a winding device for a multi-wire multi-stage coil for a transformer having a laminated portion for laminating the rectangular electric wire formed in the forming portion in a disk-wound shape, the forming portion is a plurality of pieces stacked one above the other transformers of the rectangular electric wire and simultaneously molded in a state of being restrained state superposed the a, the laminated portion, characterized in that the disc winding shape by product layer the rectangular electric wire of the plurality of molded Multi-wire multi-stage coil winding device.   2. The multi-wire multi-stage for transformer according to claim 1, wherein the overlapping state of the plurality of flat electric wires is constrained by tape winding applied at predetermined intervals in the longitudinal direction. Coil winding device.   2. The transformer for a transformer according to claim 1, wherein the plurality of flat electric wires are constrained in an overlapping state by bonding with an adhesive provided at a predetermined interval in a longitudinal direction. Multi-wire multi-stage coil winding device.   2. The transformer according to claim 1, wherein the plurality of flat electric wires are constrained in an overlapping state by mechanical coupling such as concave-convex fitting with a predetermined interval in the longitudinal direction. Winding device for multi-line multi-stage coil.   5. The plurality of transformers according to claim 1, wherein the constraining position where the superposition state is constrained varies in the circumferential position of the multi-stage coil wound around the disk. Wire multi-stage coil winding device.   The winding of the multi-wire multi-stage coil for transformer according to any one of claims 1 to 5, wherein the plurality of flat electric wires are stacked on a circular multi-stage coil or a rectangular multi-stage coil by the disk winding. apparatus.

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