JP2007306659A - Stator core, manufacturing device of the stator core, and manufacturing method of the stator core - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly correct the roundness of a manufactured stator core, and to facilitate adjustment in a preprocessing stage of correction. <P>SOLUTION: In the stator core formed into a shape of a spiral laminated core, the stator core is constituted, in such a manner that a starting end and a terminating end which are laminated in a spiral state are located at angular locations different from each other, and in general, a portion corresponding to the starting end and a portion corresponding to the terminating end in an i-th lane are substantially flush with each other. Then at winding-laminating, a diameter which is bent by a guide end, an inside-diameter roller and a moving roller can be regulated, and the diameter which has once been reduced is expanded and set back in expansion by a crescent-shaped inside-diameter guide. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a stator in an electric device in which a metal strip is wound in a spiral shape and laminated in a plurality of n lanes, and a spiral laminated core having a plurality of slots on the inner peripheral surface is used as a stator core. The present invention relates to a manufacturing core, a stator core manufacturing apparatus, and a stator core manufacturing method.

  It has been practiced to form a stator core in an electric device by winding and laminating metal strips in a spiral shape (see Patent Documents 1 to 6).

Each of those disclosed in Patent Documents 1 to 6 relates to a technique for manufacturing a stator core corresponding to the present invention. Conceptually, the slot is formed on one side of a metal strip. The metal strip formed by arranging a plurality of corresponding recesses is fed and wound in a spiral manner so that the side on which the plurality of recesses are arranged is wound inside. A metal strip-like wound laminated ring formed by laminating n lanes is manufactured. Then, on the outer peripheral surface of the metal strip-shaped material-wrapped laminated ring body, the n lanes that are laminated are joined together by welding, for example. In this case, it goes without saying that the plurality of recesses corresponding to each lane are regulated so as to be aligned for each lane and become a plurality of slots formed on the inner peripheral surface of the stator core. Yes.
Japanese Patent Publication No. 6-12944 Japanese Patent No. 2555314 Japanese Patent No. 2632148 Japanese Unexamined Patent Publication No. Sho 62-173554 Japanese Unexamined Patent Publication No. Sho 62-173955 Japanese Patent Publication No. 6-20360

  As disclosed in the above-mentioned patent document, a plurality of recesses are arranged in a metal band material in which a plurality of recesses corresponding to the slots are arranged on one side of the metal band material. When the side is wound inwardly, it is wound along the outer peripheral surface of the cylindrical body and sequentially laminated as necessary.

  However, in the conventional case, when it is wound inside and formed into a spiral shape, backlash occurs when it is wound inside due to the material of the metal band material and the width and thickness of the band, so to speak, plastic deformation. Or, even if the plastic deformation is correctly made into a circular shape, the roundness may not be obtained.

  For this purpose, it is necessary to reset the strength to apply the force inside, the strength to apply the force, and the degree of deformation to the inside to match the material and the width and thickness of the metal strip that is the work target. It becomes. In particular, in the case of winding along the outer peripheral surface of the cylindrical body, it is extremely difficult to perform the pre-processing stage work because the cross-sectional shape of the cylindrical body needs to be slightly distorted from a circular shape. Even in such a case, it is difficult to obtain the roundness of the cross section of the stator core.

  Further, in the conventional case, the starting end portion in the first lane and the terminal end portion in the final nth lane of the laminated portion in the formed metal strip wound laminated ring body are at the same angular position of the annular body. Since the metal strip was cut so as to be positioned, it was an obstacle to the above-mentioned roundness.

  That is, FIG. 9 is a diagram showing the angular positional relationship between the starting edge in the first lane and the terminal edge in the final nth lane in the conventional case, and reference numeral 200 in the drawing denotes a metal band-like material wound lamination in the conventional case. Ring bodies 50-1, 50-2,... 50-n are stacked lanes, 51 is a start end existing in the first lane 50-1, and 52 is a end end existing in the final nth lane 50-n. ing.

  In the case shown in FIG. 9, when the figure is viewed from above, the angular position of the starting end 51 and the angular position of the terminal end 52 are at the same angular position. For this reason, even if the metal band-shaped material winding laminated ring body 200 shown in the figure is pressed from above and below so that the upper surface and the lower surface of the ring body 200 are flattened correctly, the ends of the start end 51 and the end end 52 are formed. Since the corners of the portions are present, there is a problem that it is difficult to flatten correctly and the roundness is difficult to be obtained.

  It is an object of the present invention to correctly obtain the roundness of the stator core and simplify the adjustment of the pretreatment stage at that time.

  FIG. 1 shows an embodiment of a stator core according to the present invention. In the figure, reference numeral 80 is a stator core, 81, 81... Are slots formed in the stator core, and 82-1,... 82-6 are each between, for example, three locations on the outer peripheral surface of the stator core. It represents a welded part that is joined. Reference numeral 83 denotes a starting end existing in the first lane when the stator core 80 is in the stage of a metal strip-shaped laminated ring body (not shown in FIG. 1, but its position is shown), 84 Is a terminal existing in the final nth lane when the stator core 80 is in the stage of a metal strip-like wound laminated ring body. Reference numeral 85 represents a jump weld that fixes the terminal end 84. The illustrated welded portion 82-1 also serves as a weld for fixing the above-described start end 83 to the stator core 80.

  In the case of the present invention, as shown in the figure, the angular position of the starting end 83 existing in the first lane of the stack and the angular position of the terminal end 84 existing in the final nth lane are equivalent to the width of one slot bottom as a result. Are separated by the angle you want.

  FIG. 2 (A) is an enlarged view showing a main part for explaining the start and end of the stator core in the case of the present invention. The starting end shown in FIG. 1 is shown as viewed from the slot side with the end facing upward and the end facing downward.

  Reference numeral 90 in the figure represents a metal strip-like wound laminated ring body in the case of the present invention, and reference numerals 50-i, 83, and 84 correspond to FIGS. 1 and 9, respectively.

  The relationship between the angular positions of the start end 83 and the end end 84 described with reference to FIG. 1 is shown enlarged in FIG. The width indicated by the white arrow in FIG. 2A substantially corresponds to the width of the bottom of one slot as shown in FIG.

    FIG. 2 (B) shows a state where the metal strip-shaped material wound laminated ring body shown in FIG. 2 (A) is pressed from above and below. In the figure, reference numeral 90-1 denotes a pressed metal strip-like material wound laminated ring body, and the other 50-i, 83, 84 correspond to FIG. 2 (A).

  As shown in an enlarged view in FIG. 2A, the portion corresponding to the angular position of the terminal end 84 in the final nth lane (the portion corresponding to the angular position of the terminal portion) in the first lane 50-1 is pressed. As a result, the starting edge 83 existing in the first lane 50-1 is in the same plane. Similarly, the portion corresponding to the angular position of the starting end 83 in the first lane (the portion corresponding to the angular position of the starting end portion) in the final nth lane is the end existing in the nth lane 50-n by pressing. 84 and the same plane.

  In other words, the portion that transitions from the i-th lane to the (i + 1) -th lane comes to be obliquely deformed within the range of the width of the aforementioned 1 slot, and as shown in FIG. The upper and lower surfaces of 90-1 are flat surfaces. The deviation of the angular position between the portion corresponding to the start end position and the portion corresponding to the end position is effective in producing the flat surface.

  FIG. 3 is a view for explaining an apparatus for forming a metal strip-like wound laminated ring body according to the present invention. Details thereof will be described in the section of [Best Mode for Carrying Out the Invention] described later, but will be briefly described.

  The metal strip 10 in which the recesses 11 that will form slots in the future are arranged is fed to the inner diameter roller 14 by the metal strip feeding means 12. The inner diameter roller 14 bends the metal strip 10 so that the recess 11 side of the metal strip 10 is wound inside. Reference numeral 30 in the figure represents a bent metal strip. Note that the curvature depends on the positional relationship among the guide end 9, the inner diameter roller 14, and the operating roller 15.

  A three-month inner diameter guide 16 is provided on the outer peripheral surface of the inner diameter roller 14 that is rotatably supported. Then, a bent metal strip 30 is formed so as to follow a circular cross section (large circular shape) formed by the inner diameter roller 14 and the inner diameter guide 16. The code | symbol 31 represents the metal strip-like material of a bending result.

  In the case of the present invention, the metal strip 31 resulting from the bending is once bent into a circular shape having a slightly smaller diameter than the above-mentioned large circular shape by the guide end 9, the inner diameter roller 14, and the operating roller 15. And it is made to follow the outer peripheral surface of the internal diameter guide 16, and the internal diameter guide 16 works so that the diameter once made small of the metal strip-shaped material 31 of a bending result may be increased.

  Thus, once the diameter is reduced and the diameter is increased, so-called backlash is suppressed, and the bent metal strip 31 is wound around the outer peripheral surfaces of the inner diameter roller 14 and the inner diameter guide 16. It is turned and sequentially laminated. After the predetermined number of layers are finished, the cutting-off cutter 19 works and is cut at the position of the cutting-out portion 17.

  As described above, a metal strip-shaped wound laminate ring body 90 (see FIG. 2) having a high roundness is produced.

  In the case of the present invention, as shown in FIG. 1 and FIG. 2, there is a difference in angular position between the angular position equivalent part of the starting end part and the angular position equivalent part of the terminal end part, as shown in FIG. Since the inner diameter guide 16 is provided and the diameter of the stator core to be manufactured is increased after the plastic end deformation by the guide end 9, the inner diameter roller 14, and the operating roller 15, the roundness of the manufactured stator core is high. Become. Moreover, the variation by the material and shape of the metal strip 10 is also small.

  As described above, FIG. 1 shows an embodiment of the stator core according to the present invention, and FIG. 2 (A) is an enlarged view of the main part for explaining the start and end of the stator core. Further, FIG. 2 (B) shows a state where the metal band-shaped material wound laminated ring body shown in FIG. 2 (A) is pressed from above and below.

  In the stator core 80 of the present invention, as shown in FIGS. 1 and 2, the start end 83 and the end end 84, which are spirally wound and stacked as a spiral stacked core, are positioned at different angular positions. As shown in FIG. 2 (B), in general, for any lane i that is stacked, the portion that moves from the i-th lane to the (i + 1) -th lane is shown in FIG. 2 (B). As shown in the figure, there is a “crossover” part that has undergone an oblique deformation.

  By providing the “crossover” portion, the entire first lane 50-1 forms the same plane except for the “crossover” portion as shown in FIG. The entire lane 50-n forms the same plane except for the “crossover” portion, and the roundness of the stator core can be achieved efficiently.

  In giving this “crossover”, as shown in FIG. 1, the difference between the angular position of the aforementioned starting end 83 and the angular position of the aforementioned trailing end 84 is not uniquely determined, but as a result, almost one The width at the bottom of the slot. At that time, the aforementioned “crossover” portion is formed at the position of the bottom of the slot.

  If the above-mentioned “crossover” part is formed at a position across two slots, the part of the partition wall between the two adjacent slots is formed in the part subjected to the oblique deformation shown in FIG. When the stator core 80 is formed, it becomes difficult to uniformly arrange the slots as shown in FIG.

  FIG. 3 is a view for explaining an apparatus for forming a metal strip-like wound laminated ring body according to the present invention, and FIG. 4 is a simplified view of FIG. 3 as viewed from below.

  Reference numeral 9 in the figure is a guide end, 10 is a metal strip, 11 is a recess, 12 is a metal strip feed means, 13 is a metal strip winding / laminating means, 14 is an inner diameter roller, 15 is an operating roller, 16 is a three-month inner diameter guide, 17 is a cut-off section, 18 is a lane change section, 19 is a cutting cutter, 20 is an inner diameter guide position adjustment section, 21 is an operating roller position adjustment section, and 30 is a bent metal strip. , 31 represents a metal strip as a result of bending. Further, reference numeral 22 denotes an elongated groove provided in the metal strip material feeding means.

  The metal strip 10 in which the recesses 11 are arranged is supported on both sides by the elongated groove 22 and is fed to the inner diameter roller 14 by the metal strip feed means 12. In this case, needless to say, the end where the recess 11 exists is directed toward the inner diameter roller 14.

  By the action of the lane change unit 18, the fed metal strip 10 is fed while being properly controlled in the laminating lane when the metal strip 10 is wound around the metal strip winding / laminating means 13 and laminated. The coming metal strip 10 is bent by the guide end 9, the inner diameter roller 14, and the operating roller 15 so as to be wound inside the recess 11, and becomes a metal strip 30 as illustrated.

  As shown in the figure, the metal strip-like material winding / laminating means 13 has an inner diameter roller 14 and a three-month inner diameter guide 16 provided so as to surround the outer peripheral surface of the inner diameter roller 14. Then, the inner diameter roller 14 and the inner diameter guide 16 form a great circular shape in a cross-sectional shape having a diameter larger than the outer circumference circle of the inner diameter roller 14.

  FIG. 5 is a diagram for explaining a situation in which the metal strip material as a result of bending is wound. Reference numerals 9, 10, 14, 15, 16, 30, and 31 in the figure correspond to FIG. 3 and FIG. 4, and reference numeral 90 represents the metal band-shaped material wound laminated ring body shown in FIG. Yes.

  FIG. 5 (A) shows that a bent metal strip is formed with a small diameter inside by a guide end 9, an inner diameter roller 14, and an operating roller 15 under the condition that a three-month inner diameter guide does not exist. Shows the situation of being bent over.

  As is well known, the metal strip 31 that is bent by the guide end 9, the inner diameter roller 14, and the operation roller 15 is likely to cause backlash later, so that the metal strip shown in FIG. It is strongly bent inward so as to form a smaller circle than the circle formed by the wound laminated ring body 90. In FIG. 5A, as indicated by an arrow P in the drawing, the inner diameter of the bent metal strip 31 is drawn to be smaller than the diameter formed by the outer peripheral surface of the inner diameter guide 16 in the illustrated state. This is to state that. That is, if the inner diameter guide 16 does not exist, the metal strip 30 is bent strongly inward so as to take the positional relationship as shown in FIG. The metal strip 31 as a result of the bending shown in FIG. 5 (A) represents this situation. This situation corresponds to the fact that the present invention is bent so as to have a circular shape smaller than the diameter of the great circle formed by the inner diameter roller 14 and the inner diameter guide 16.

  FIG. 5B depicts a situation where a three-month inner diameter guide is present in the present invention. In FIG. 5B as well, the metal strip 31 as a result of bending by the guide end 9, the inner diameter roller 14, and the operating roller 15 is a circle smaller than the diameter of the great circle formed by the inner diameter roller 14 and the inner diameter guide 16. It is strongly bent inward to take shape. However, in the case shown in FIG. 5 (B), the bent metal strip 31 that is strongly deformed inwardly is pushed back by the existing inner diameter guide 16 around the illustrated arrow Q, and the result of the bending is obtained. The inner diameter of the metal strip 31 is expanded back and proceeds along the outer peripheral surface of the inner diameter guide 16. However, even if it does in this way, the metal strip-like material 31 of the curving result is slightly separated from the outer peripheral surface of the inner diameter guide 16 as shown by the arrow R in the figure, where it has advanced about a half circumference (FIG. 5B ) Expands the situation.) And after that, it comes to follow the above-mentioned great circle shape.

  FIG. 5 (C) depicts the presence of the metal strip-like wound laminated ring as a result of being wound and laminated. In FIG. 5C, the metal strip-shaped material winding laminated ring body 90 is illustrated in an enlarged manner with respect to the positional relationship with the operation roller 15 and the inner diameter guide 16.

  As shown in an enlarged view in FIG. 5C, the laminated metal band-shaped laminated ring body 90 that is laminated closely follows the above-mentioned great circle shape in the counterclockwise direction and behind the illustrated arrow S. Although it is shaped, it is separated from the outer peripheral surface of the inner diameter guide 16 and slightly protrudes toward the working roller 15 before the arrow S. The inner wall of the metal strip-shaped material-wrapped laminated ring 90 depicted in FIG. 5C forms a circle centered on the illustrated point α. It can be considered that the point β represents the center of the circle formed by the inner diameter roller 14, and the point γ represents the center of the circle formed by the aforementioned great circle shape. The inner diameter guide position adjusting unit 20 and the operating roller position adjusting unit 21 are adjusted according to the material, thickness, and width of the metal strip 10.

  With reference to FIG. 3 and FIG. 4, the situation in which the metal strip 10 is wound and laminated, and is bent and plastically deformed therebetween is described with reference to FIG. 5. When the number of the laminated metal strips 90 shown in the figure reaches the predetermined number of layers, the metal strip 10 that is being bent is cut by the cutting cutter 19 shown in FIG. .

  FIG. 6 is a diagram for explaining a situation in which the metal belt-shaped material wound laminated ring body is pressed from above and below. In the figure, reference numeral 90 denotes a metal strip-like material wound laminated ring body, 81 denotes a slot, 83 denotes a starting end, and 84 denotes a terminal end. In addition, 40A is an upper restricting body, 40B is a lower restricting body, 41, 41... Are restricting insertion pins, 42, 42... Are restricting insertion pins, and 45 is an inner diameter restricting cylindrical body.

  In the cylindrical lower regulating body 40B, slots 81, 81... (In other words, slots 81, 81... Of the stator core 80 shown in FIG. 1) each having the metal strip wound laminated ring body 90 are provided. If there are, for example, 48 slots 81 corresponding to the angular positions of the three, the three restricting insertion pins 42 are fixedly set up at positions that are separated from the angular positions of 16 slots. It has been.

  Further, in the case where there are, for example, 48 slots 81 in the cylindrical upper restricting body 40A, the holes 44 correspond to the existing angular positions of the three restricting insertion pins 42 of the lower restricting body 40B. The restricting insertion pins 41, 41... Are fixedly raised corresponding to the positions of the 45 slots excluding the positions of the three slots of the 48 slots 81, 81. ing.

  The outer diameter of the inner diameter regulating cylindrical body 45 is made larger than the inner diameter of the metal strip-like material wound laminated ring body 90 and is made equal to the inner diameter of the stator core 80.

  The metal strip wound and laminated ring body 90 formed as described with reference to FIGS. 3 and 4 is taken out from the metal strip winding and laminating means 13 shown in FIG. The body is placed on the body 40B in a state in which the above-described start end 83, end end 84, and angular position are aligned with the predetermined angular position of the lower regulating body 40B. In this case, the restricting insertion pin 42 is inserted into the slot 81 that is separated by 120 ° in the angular position.

  Furthermore, the upper restricting body 40A is covered from above. In this case, the restriction insertion pin 42 of the lower restriction body 40B is inserted into the hole 44 of the upper restriction body 40A, and the restriction insertion pins 41, 41... It is inserted into the slots 81, 81... Of the material winding laminated ring body 90 and is inserted into the holes 43, 43.

  FIG. 7 is a view showing a state in which the restricting insertion pin is inserted into the slot, and FIG. 8 is a view showing that the lower restricting body, the inner diameter restricting cylindrical body, and the upper restricting body are covered with the metal belt-shaped material winding laminated ring body. It is a figure which shows a state. Reference numerals in FIGS. 7 and 8 correspond to those in FIG.

  As shown in FIG. 8, the metal strip-like material wound laminated ring body 90 (which will later become the stator core 80) is covered by the lower restricting body 40B, the inner diameter restricting cylindrical body 45, and the upper restricting body 40A, and is used for restriction. The insertion pins 41, 41,..., 42, 42,.

  As shown in FIG. 7, the restriction insertion pins 41, 41... (The same applies to the restriction insertion pins 42, 42...) Are inserted into the slots 81 of the metal strip wound laminated ring body 90 to restrict the slot position. After that, the inner diameter regulating cylindrical body 45 is inserted into the inner diameter of the metal band-shaped material wound laminated ring body 90 so as to expand the inner diameter of the metal band-shaped material wound laminated ring body 90, thereby reducing the inner diameter dimension. The desired diameter is determined.

  Under the state shown in FIG. 8, the upper restricting body 40A and the lower restricting body 40B are pressed from above and below. By this pressing, the metal strip-shaped material wound laminated ring body 90 in the state shown in FIG. 2 (A) is pressed into the pressed metal belt-shaped material-wrapped laminated ring body 90- in the state shown in FIG. 2 (B). 1 is plastically deformed.

  Next, the metal belt-shaped material-wrapped laminated ring body 90-1 pressed under the state shown in FIG. 8 remains in the state shown in FIG. 8, for example, as shown in FIG. Or welded so as to connect the lanes at 82-6. At the time of welding at these six locations, the starting end 83 in the first lane described above is welded together to the pressed metal strip-like material wound laminated ring body 90-1. In addition, the end 84 in the final nth lane is welded to the pressed metal strip-like wound laminated ring body 90-1 by the jump welding portion 85.

  In the state where the welding is completed, the pressed metal strip-shaped material-wrapped laminated ring body 90-1 becomes the stator core 80. That is, after the welding is finished, the upper restricting body 40A, the lower restricting body 40B, and the inner diameter restricting cylindrical body 45 are removed to form the stator core 80.

  A stator winding (not shown) is wound using the slot 81 of the stator core 80, and, for example, a stator of an electric motor is configured.

  The stator core of the present invention is used as a stator core having a laminating core in an electric device, particularly a generator or an electric motor.

It is a figure which shows the Example structure of the core for stators of this invention. (A) is the figure which expanded and showed the principal part explaining the start end and termination | terminus of the core for stators in the case of this invention, (B) is a metal strip-shaped material winding lamination | stacking ring body shown to (A). It is a figure which shows the state pressed from the upper and lower sides. It is a figure explaining the apparatus which forms the metal strip-shaped material winding lamination | stacking ring body in this invention. It is the figure which simplified the figure which looked at FIG. 3 toward the upper direction from the downward direction. It is a figure explaining the condition where the metal strip-like material of a curving result is wound. It is a figure explaining the condition which presses a metal strip-shaped material winding lamination | stacking ring body from the upper and lower sides. It is a figure which shows the state in which the insertion pin for regulation is inserted in the slot. It is a figure which shows the state in which the lower control body, the internal diameter control cylindrical body, and the upper control body were covered with the metal strip-shaped material winding laminated ring body. It is a figure which shows the angular positional relationship of the termination | terminus part in the 1st lane in the conventional case, and the termination | terminus part in the last nth lane.

Explanation of symbols

9: Guide end 10: Metal strip material 11: Recess 12: Metal strip material feeding means 13: Metal strip material winding / laminating means 14: Inner diameter roller 15: Working roller 16: Inner diameter guide 17: Cut-off section 18: Lane Change unit 19: Cut-off cutter 20: Inner diameter guide position adjusting unit 21: Working roller position adjusting unit 30: Curved metal strip 31: Curved metal strip 40A: Upper regulating body 40B: Lower regulating body 41: Regulation Insertion pin 42: restriction insertion pin 43: hole 44: hole 45: inner diameter restriction cylinder 50-i: lane 51: start end 52: end 80: stator core 81: slot 82: welded portion 83: start end 84: end 85: Jump welded portion 90: Metal belt-shaped material wound laminated ring body 90-1 of the present invention: Pressed metal belt-shaped material wound laminated ring body 200: Conventional metal belt-shaped material wound laminated ring body Grayed body

Claims (5)

In a stator core in an electrical device that is formed by winding a metal strip in a spiral shape and laminating a plurality of n lanes and using a spiral laminated core having a plurality of slots on the inner peripheral surface as a stator core,
In a plurality of locations on the outer peripheral surface of the spiral laminated core, the individual lane parts of the spiral laminated core are coupled together,
The spiral end of the spiral laminated core is positioned in a different angular position with the start and end ends being laminated in a spiral shape,
The start end and the end are respectively joined to the spiral laminated core,
In addition, the start end portion of the first lane of the metal strip having the start end and the portion corresponding to the angular position of the end portion of the final nth lane in the first lane are formed on substantially the same plane. ,
The end portion of the final nth lane of the metal strip having the end is formed so that the portion corresponding to the angular position of the start end portion of the first lane in the final nth lane is substantially on the same plane,
Similarly, a portion corresponding to the angular position of the starting end portion of the first lane in the i-th (where 2 ≦ i ≦ (n−1)) lane existing between the second lane and the (n−1) lane, The stator core, wherein the end portion of the n-th lane in the i-th lane is formed so as to be substantially on the same plane.   2. The stator core according to claim 1, wherein the different angular positions are different from each other by a width of an angular position of a bottom portion of one slot in the plurality of slots. A portion corresponding to the angular position of the start end portion of the first lane in the i-th lane is at one end face position for the one slot,
3. The stator core according to claim 2, wherein a portion corresponding to an angular position of a terminal portion of the n-th lane in the i-th lane is at the other end face position for the one slot. In an apparatus for manufacturing a stator core in an electrical device that is formed by winding a metal strip in a spiral shape and laminating a plurality of lanes and using a spiral laminated core having a plurality of slots on an inner peripheral surface as a stator core,
About the metal strip material formed by arranging a plurality of recesses corresponding to the slots on one end side of the metal strip material, the plurality of recesses of the metal strip material are arranged and formed. A metal strip material feeding means having an elongated groove into which the end on the non-side is inserted, and a material feeding section for feeding and driving the metal strip material;
An inner diameter roller provided so as to be wound inside the side where the plurality of recesses of the metal band material fed by the metal band material feeding means are arranged, and an outer peripheral surface of the inner diameter roller A metal strip-like material winding and laminating means having a three-month inner diameter guide that forms a large circular shape with a cross-sectional shape having a diameter larger than that of the inner diameter roller together with the inner diameter roller;
A guide end and an operating roller for bending the metal strip material inward so that the metal strip material wound inside by the inner diameter roller is further wound inside and takes a circular shape smaller than the diameter of the great circle shape. ,
Lane change means for operating the metal band material fed by the metal band material feeding means to be lane changed with respect to the metal band material winding / laminating means,
A cutting cutter for cutting the metal strip being wound and laminated by the metal strip winding and laminating means at a predetermined length position;
A three-month inner diameter guide position adjustment unit that positions the three-month inner diameter guide so as to be adjustable in the left-right direction, and an operation roller position adjustment unit that moves the operation roller closer to or away from the great circle shape. As it is made,
The outer peripheral surface portion of the three-month inner diameter guide has a circular shape formed by a metal strip that is bent by the operating roller so as to take a circular shape smaller than the diameter of the great circular shape. An apparatus for manufacturing a stator core, wherein the stator core is expanded so as to have a diameter to be created. In a method for manufacturing a stator core in an electrical device, which is formed by winding a metal strip in a spiral shape and laminating in a plurality of lanes and using a spiral laminated core having a plurality of slots on the inner peripheral surface as a stator core,
With respect to the metal strip material formed by arranging a plurality of recesses corresponding to the slots on one end side of the metal strip material, the plurality of recesses of the metal strip material are arranged and formed. An inner diameter roller provided to wrap the inner side inward and an outer peripheral surface of the inner diameter roller so as to surround the outer peripheral surface of the inner diameter roller and to form a large circular shape with a cross-sectional shape having a larger diameter than the inner diameter roller. Metal strip material winding / laminating means having a monthly inner diameter guide,
A guide end and an operating roller for bending the metal strip material inward so that the metal strip material wound inside by the inner diameter roller is further wound inward and takes a circular shape smaller than the diameter of the great circle shape. ,
Is used,
A metal strip wound and laminated ring body formed by cutting and cutting the metal strip wound and laminated by the metal strip winding and laminating means at a predetermined length position,
In the metal strip wound laminate ring body, using insertion pins inserted corresponding to the positions of the plurality of slots in the plurality of slots existing on the inner periphery of the metal strip wound laminate ring body Regulate the position of the slot corresponding to each stacked lane,
In a state where the position of the slot is regulated, the metal band-shaped material wound laminated ring body is pressed from the upper surface and / or the lower surface, and under that state, a plurality of locations on the outer peripheral surface of the metal band-shaped material wound laminated ring body And joining the metal strip wound laminate ring body to the metal strip wound laminate ring body at mutually different angular positions,
A method for manufacturing a stator core, characterized in that an upper surface and a lower surface of a laminated core formed of a metal strip-shaped wound laminated ring body are substantially parallel to each other.

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