JP2005151736A - Coil end molding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil end molding device that can prevent the deformation and breakage of a cuff by arranging a supporting part that supports the cuff at a slot blocking end side against a pressing force when press-molding a coil end at the slot blocking end side. <P>SOLUTION: A coil support member 33 is adjusted in its protrusion amount by a position adjusting part 37 together with, or after movements of internal/external diameter side guides 23, 25, whereby a pressing part 27 presses the coil end 17 in a state that the coil end 17 above the cuff 19 is pressed. Therefore, the pressing force of the pressing part 27 is received by the coil support member 33, with the exception of being applied to the coil end 17 located between the pressing part 27 and the coil support member 33, and the coil end 17 is bent toward the external diameter side of a core 11 with the coil support member 33 as a fulcrum, and press-molded. An excessive pressing force is not applied to the cuff 19, and then the deformation and breakage of the cuff can be prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a coil end portion forming apparatus for forming a coil end portion of a coil wound around a stator core.

  Conventionally, a coil end portion of a stator core wound with a coil bundle wire is generally formed by limiting the protruding height of the coil end portion from the core end surface as a result of a demand for a compact rotating machine with a device size. Is.

  Also, in a three-phase motor that rotates by energizing an alternating current power supply that is sequentially out of phase to obtain a rotating magnetic field, or a generator that generates electromotive force that is sequentially out of phase, the coil bundle wire is between slots of a predetermined pitch. Since the different coil bundles are wound around the adjacent slots, the adjacent coil bundles are wound with an overlap. When winding the second and subsequent coil bundle wires, it is necessary to perform a process so that the coil end portion of the coil bundle wire already wound does not become an obstacle to coil winding in the unwound slot.

  The process of pressing the coil end part to the core end face side with a forming die in order to move the coil end part to the rear end part of the slot that does not interfere with the insertion and winding of the subsequent coil bundle and to limit the protruding height Has been done. Here, the slot rear end is a closed end opposite to the opening end of the slot into which the coil bundle is inserted.

  In addition, a cuff support may be provided to protect the cuff portion of the slot insulating paper during insertion and winding of the coil bundle wire into the slot and further press forming the coil end portion. The cuff support expands and contracts along the core end surface from the slot rear end portion toward the opening end portion of the slot. A protrusion that is inserted between adjacent slots and protects the cuff at the slot end, and is wider than the protrusion, and protects the cuff at the rear end of the slot together with the adjacent cuff support. A cuff support member having a rear edge portion is provided for each slot to constitute a cuff support.

  Also, a resin-molded insulating ring for a molded motor disclosed in Patent Document 1 includes an annular surface that covers the end surface of the coil end portion, and an inner cylinder that is connected to the annular surface and covers the inner and outer surfaces of the coil end portion. And a comb tooth body that is provided continuously with the inner cylinder surface and faces the slot of the stator core. The object is to prevent the deformation of the coil end portion and the deformation of the insulating paper inserted into the slot regardless of the injection molding pressure at the time of molding.

JP-A-6-70497

  However, in the press molding of the coil end portion by the molding die, the coil end portion is pressed against the rear end portion of the slot, so that it is provided in the slot for insulation between the coil bundle wire to be wound and the stator core. An excessive pressing force may act on the cuff portion of the slot insulating paper. Depending on the heat resistance and oil resistance of the slot insulation paper required depending on the use condition of the rotating electrical machine, it may be impossible to use the stretchable material in the slot insulation paper, and the cuff part may be deformed or torn by pressing force. There is a possibility that the insulation performance between the coil bundle wire and the stator core may not be secured, which is a problem.

  In this case, the outer edge of the cuff part may be protected by the cuff support. However, variations in the thickness of the stator core, the material of the slot insulation paper, the paper thickness, etc., variations in the folded state of the cuff portion formed by folding the slot insulation paper, etc., within the slot of the wound coil bundle wire In the cuff support that is positioned in consideration of various variation factors such as the difference in the storage state, there is a possibility that the cuff portion may not be reliably supported when the coil end portion is pressed.

  The present invention has been made to solve at least one of the problems of the prior art, and when the coil end portion formed by the coil bundle wound around the stator core is press-formed to the closed end side of the slot, the slot is closed. Provided is a coil end portion forming device capable of preventing deformation and tearing of a cuff portion on the slot closing end side by providing a support portion that supports the cuff portion of the slot insulating paper on the end side against a pressing force. The purpose is to do.

  In order to achieve the above object, the coil end portion forming device according to claim 1 is configured such that when the coil end portion of the coil wound between the slots of the stator core is press-formed to the closed end side of the slot, the closed end of the slot is formed. A support portion is provided which contacts the coil end portion from the side and provides a forming fulcrum during press forming.

  In the coil end part molding apparatus according to the first aspect, since the support part provides a molding fulcrum at the time of press molding, the coil end part is pressed to the closed end side of the slot with the support part as a fulcrum.

  As a result, the applied pressing force is not transmitted beyond the support portion, and excessive pressing force is not applied to the coil end portion at the base of the support portion, thereby preventing unnecessary deformation. A desired pressing can be performed by applying a pressing force only to a predetermined portion of the coil end portion.

  In addition, when the coil end portion of the coil wound between the slots of the stator core is press-formed to the closed end side of the slot, the coil end portion forming device according to claim 2 A first guide portion for guiding the coil end portion to the molding position, a second guide portion for guiding the coil end portion to the molding position on the closed end side of the slot, and the coil end portion between the first and second guide portions. A pressing portion to be pressed and a support portion that protrudes from the inner side surface of the second guide portion during press molding and abuts against the coil end portion to provide a molding fulcrum.

  In the coil end part forming apparatus according to claim 2, the coil end part is sandwiched between the first guide part and the second guide part from the opening end side and the closing end side of the slot and then pressed by the pressing part, thereby forming the position. The coil end portion is pressed toward the closed end side of the slot with the support portion protruding from the inner side surface of the second guide portion as a fulcrum.

  Accordingly, since the support portion projecting from the inner surface of the second guide portion that guides the coil end portion to the molding position is provided on the closed end side of the slot, the first and first portions are formed when the coil end portion is press-molded by the pressing portion. The coil end portion is guided to the molding position on the closed end side of the slot by the two guide portions, and the applied pressing force does not excessively press the coil end portion beyond the support portion. The coil end portion is not unnecessarily deformed beyond the support portion, and a pressing force is applied only to a predetermined portion of the coil end portion to perform press molding at a molding position by the first and second guide portions. it can.

  Further, the coil end part forming apparatus according to claim 3 is the coil end part forming apparatus according to claim 1 or 2, wherein the support part is provided via a cuff part of slot insulating paper or / and beyond the cuff part. It contacts the coil end part. Thereby, the pressing force at the time of press molding is not transmitted to the cuff part, and the cuff part is pressed by an inadvertent deformation of the coil end part, so that deformation and tearing do not occur.

  According to a fourth aspect of the present invention, there is provided the coil end part forming apparatus according to the third aspect, wherein the support part presses the coil end part toward the opening end side of the slot. Thereby, a support part can be made to contact a coil end part reliably, and the pressing force at the time of press molding of a coil end part is reliably received by a support part, and is not transmitted beyond a support part.

  The coil end part forming device according to claim 5 is the coil end part forming device according to at least one of claims 1 to 4, wherein the protrusion amount of the support part from the inner side surface of the second guide part is set. A position adjustment unit for adjustment is provided.

  In the coil end part shaping | molding apparatus of Claim 5, the protrusion amount of the support part from the inner surface of a 2nd guide part can be adjusted with a position adjustment part. Regardless of the specifications and manufacturing variations of the stator core, cuff part, and coil end part, the positional relationship between the support part and the coil end part can always be adjusted to a predetermined positional relation, and the support part is formed into a predetermined shape during press molding. It can be arranged as a fulcrum.

  According to the present invention, when the coil end portion of the coil bundle wound around the stator core is press-formed to the closed end side of the slot, the support portion provided on the slot closed end side serves as a fulcrum and presses the coil end portion. Therefore, the pressing force is not transmitted beyond the support portion, and an excessive pressing force is not applied to the cuff portion of the slot insulating paper. It is possible to provide a coil end part forming apparatus capable of preventing the cuff part from being deformed or torn.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the coil end part forming apparatus of the present invention will be described below in detail with reference to the drawings based on FIGS.

  FIG. 1 shows that a coil bundle wire 15 is inserted from the opening end side of the slot 13 on the inner diameter side of the core 11 between the slots 13 spaced apart by a predetermined number of slots 13 provided in the stator core 11 at a predetermined pitch. It is a figure which shows a state. Of the coil bundle wire 15 wound between the two slots 13, a portion protruding from the core end surface is a coil end portion 17.

  When considering a motor as a rotating electrical machine using the stator core 11, it is preferable to form a rotating magnetic field in the stator core 11 according to the rotation of a rotor (not shown). When considering a generator as the rotating electrical machine, according to the rotation of the rotor. It is preferable that the electromotive force generated sequentially can be collected efficiently. Therefore, it is generally performed to wind different coil bundles in the circumferential direction of the core 11 around the plurality of slots 13. For example, when considering a motor, there is a method of obtaining a rotating magnetic field of the stator core 11 by three-phase alternating current. In this case, the wound coil bundles 11 are sequentially arranged in the order of the U phase, the V phase, and the W phase in the circumferential direction of the core 11, and the energization phase of the coil bundle wire 15 is determined in this order.

  As described above, it is necessary to sequentially wind a plurality of coil bundles 15 around the slot 13 of the stator core 11. Since the coil bundle wire 15 is sequentially inserted from the opening end side of the slot 13, the coil end portion 17 of the coil bundle wire 15 inserted in advance does not interfere with the insertion of the subsequent coil bundle wire 15. The coil end portion 17 needs to be formed.

  Therefore, as shown in FIG. 2, the coil end portion 17 of the inserted coil bundle wire 15 is press-formed to the closed end side of the slot 13 on the outer diameter side of the stator core 11, thereby It has been done to facilitate insertion.

  Here, slot insulating paper is inserted into the inner wall surface of the slot 13, and the slot insulating paper is further provided with a cuff portion 19 which is a protruding portion from the core end surface. The slot insulating paper is intended to insulate the coil bundle wire 15 from the stator core 11, and at the same time, in particular, by providing the cuff portion 19, the coil bundle wire 15 is pressed against the corner of the slot 11 on the core end face. Is provided to prevent the coil bundle wire 15 from being damaged.

  For the purpose of protecting the cuff part 19 in the step of inserting the coil bundle wire 15, a cuff part 19 protective member (not shown) is provided on the core end surface so as to surround the cuff part 19 for each slot 13. It is done. This is so-called cuff support. However, it corresponds to variations in manufacturing conditions of each member, and differences in various conditions such as the wire diameter and number of coil bundles 15 to be inserted into the slot 13, the length of the slot 13, the shape, length, and material of the cuff portion 19. Therefore, the installation position of the cuff support with respect to the cuff part 19 is set including a predetermined tolerance, and the support capability of the cuff part 19 is limited.

  Therefore, a support portion is provided to reliably prevent an excessive force from being applied to the cuff portion 19 on the closed end side of the slot 13 when the coil end portion 17 is pressed. In the coil end part forming apparatus of the embodiment described below, the support part will be specifically described together with the press forming mechanism of the coil end part 17.

  FIG. 3 is a plan view of the coil end part forming device 21. The coil end part forming device 21 is provided to face a core end surface of a stator core (not shown). The coil end portion protruding from the core end face is drawn from the inner / outer diameter side of the core and pressed from above or below. In order to correspond to the coil end portions on the upper and lower end surfaces of the stator core, the coil end portion forming device 21 is preferably provided on each of the both end surfaces of the core. Alternatively, it is also possible to form a coil end portion for each end face by providing one set of coil end portion forming devices 21 and moving the stator core and / or the coil end portion forming device 21 itself.

  From the inner diameter side of the core, by pressing the coil end portion or contacting or approaching the coil end portion, the inner diameter side guide portion 23 for guiding the coil end portion to the molding position on the inner diameter side or determining the molding position, From the outer diameter side, the coil end portion is pressed or brought into contact with or close to the coil end portion, and the coil end is guided to the outer diameter side molding position or guided to the outer diameter side to determine the molding position. The part is held. In FIG. 3, the inner diameter side guide portion 23 and the outer diameter side guide portion 25 have an arc shape obtained by dividing the annular shape into four portions at approximately 90 degrees, and are simultaneously wound at predetermined pitches of the slots on the core circumference. In order to simultaneously press-mold the coil end portions formed by the coil bundles to be mounted, they are arranged in an annular shape along the circumference of the core.

  An annular pressing portion 27 is provided between the inner diameter side guide portion 23 and the outer diameter side guide portion 25. The pressing portion 27 is inserted into a gap between the inner diameter side guide portion 23 and the outer diameter side guide portion 25 in a state where the coil end portion is sandwiched, and presses the coil end portion from above. In the stator core in which the closed end of the slot is disposed on the outer diameter side of the core, the coil end portion is press-formed on the outer diameter side of the core. The coil end portion is pressed to the outer diameter side of the core by the inner diameter side guide portion 23 and is mainly pressed to the outer diameter side guide portion 25 by the pressing portion 27.

  The outer diameter side guide part 25 is provided with an opening 31 at a position of approximately 22.5 degrees along the arc from the arcuate end, and can slide in the core 31 in the opening 31. A support portion 29 including a coil support member 33 is provided. One outer diameter side guide portion 25 is provided with two support portions 29 with an interval of approximately 45 degrees on the arc, and is adjacent to the circular end portion at a position of approximately 22.5 degrees. The interval between the support portions 29 between the outer diameter side guide portions 25 is also approximately 45 degrees. Support portions 29 are provided every 45 degrees along the circumference of the stator core.

  The coil end part forming device 21 is, for example, a stator core used in a motor driven by a UVW three-phase power source, and a coil bundle wire through which each phase of the UVW is energized is between slots having a pitch of approximately 45 degrees. The stator core is wound and wound in such a manner that the coil bundles are wound sequentially so that each phase is in at least one order in a 45 degree arc. Since the coil bundle wire is wound at the same time for each phase, a support portion 29 that supports the coil end portion of each wound phase on the closed end side of the slot is provided at approximately every 45 degrees.

  Next, the XX cross section in FIG. 3 is shown in FIG. 4, and the structure of the inner diameter side guide part 23, the outer diameter side guide part 25, and the pressing part 27 and the relationship between the stator core 11 and the coil end part 17 will be described. In addition, although the coil end part 17 by the coil bundle wire wound by the slot protrudes from the both end surfaces of the stator core 11, only the coil end part 17 in one end surface is clearly shown in FIG.

  In FIG. 4, a coil end portion 17 formed by a coil bundle wound between slots of the stator core 11 protrudes from the end surface of the core beyond a cuff portion 19 of slot insulating paper. The cuff support 18 surrounds the cuff part 19 in contact with or close to the core end surface. The inner diameter side guide part 23 and the outer diameter side guide part 25 are arranged leaving an insertion gap of the cuff support 18 from the core end surface.

  The inner diameter side guide portion 23 is a rising portion that rises at a predetermined inclination angle on the core outer diameter side in order to press-mold the coil end portion 17 toward the outer diameter side of the core on the surface facing the coil end portion 17. 23A.

  The outer diameter side guide portion 25 is provided with an opening 31 toward the axis of the core 11. The position of the opening 31 is a position at which the tip of the coil support member 33 slidably provided inside comes into contact with the coil end portion 17 protruding beyond the cuff portion 19. A screw member 35 is screwed to the rear end portion of the coil support member 33, and the screwing distance of the coil support member 33 to the screw member 35 is changed in accordance with the turning operation of the screw member 35, thereby the coil support. The member 33 is slidable in the axial direction of the core 11.

  The pressing portion 27 is disposed above the coil end portion 17 and at a position to be inserted between the inner / outer diameter side guide portions 23 and 25 that sandwich the coil end portion 17.

  In press molding of the coil end portion, the inner diameter side guide portion 23 is moved to the outer diameter side of the core 11, and the outer diameter side guide portion 25 is moved to the inner diameter side of the core 11, so that the coil end portion 17 is moved outside the core. While pressing to the radial side, it guides to a molding position, and the shaping | molding shape in the case of the press molding by the subsequent press part 27 is decided.

  The coil support member 33 is rotated by the position adjusting unit 37 (described later) along with the movement of the inner / outer diameter side guide parts 23, 25 or after the movement of the inner / outer diameter side guide parts 23, 25. And is slid to the inner diameter side of the core. The tip of the coil support member 35 presses the coil end portion 17 above the cuff portion 19 or abuts against the coil end portion 17.

  In this state, the pressing portion 27 is inserted between the inner / outer diameter side guide portions 23 and 25 and presses the coil end portion 17 in the direction of the core end surface. This is shown in FIG. The pressed coil end portion 17 is guided to a molding position formed by the inner / outer diameter side guide portions 23 and 25. In this case, since the coil support member 33 is pressed or abutted against the coil end portion 17 from the core outer diameter side, when the coil end portion 17 is guided to the core outer diameter side by pressing of the pressing portion 27, the pressing portion In addition to being applied to the coil end portion 17 between the pressing portion 27 and the coil support member 33, the coil support member 33 receives the pressing force of 27.

  The coil end portion 17 is bent and pressed to the outer diameter side of the core 11 with the coil support member 33 as a fulcrum by the pressing force of the pressing portion 27. Excessive pressing force is not applied to the cuff portion 19 via the coil end portion 17 or the coil end portion 17 on the core end surface side beyond the coil support member 33. Even when the coil end portion 17 is pressed to the core outer diameter side, the cuff portion 19 is not deformed or broken.

  Here, the coil support member 33 can freely adjust the amount of protrusion from the outer diameter side guide portion 25 by the position adjusting portion 37 shown in FIG. 6. A screw member 35 is screwed to the rear end portion of the coil support member 33, and the protruding amount of the coil support member 33 can be adjusted by the rotation of the screw member 35. A socket wrench 39 is provided on the rotation shaft of the rotation actuator 41 and engages with the head of the screw member 35. The screw member 35 is rotated by the rotation of the actuator 41, and the amount of protrusion of the coil support member 33 can be adjusted.

  The adjustment of the protrusion amount is performed by a controller (not shown). In detecting the protrusion position, in addition to detection using a position sensor, detection is also performed by detecting torque necessary for rotation of the actuator 41. Can do. This is because when the protrusion of the coil support member 33 is restricted by the coil end portion 17, the forward load of the coil support member 33 becomes heavier and cannot be moved forward.

  The actuator 41 is installed in the feed mechanism unit 43. The feed mechanism 43 is connected to the actuator 47 by a connecting rod 45. As the actuator 47 is driven, the screw member 35 of the socket wrench 39 is attached to and detached from the head. Here, the connecting rod 45 that transmits the feeding operation to the feeding mechanism 43 can be freely selected as long as the driving force of the actuator 47 can be converted into a linear motion such as the attachment / detachment of the socket wrench 39. When transmitting the linear motion of the actuator 47 as it is, it is also possible to adopt a configuration in which the connecting portion 45 is threaded and screwed with the feed mechanism portion 43, and the rotational motion of the actuator 47 is converted into a linear motion.

  In FIG. 7, the enlarged view of the support part 29 is shown. The coil support member 33 having a curved tip end portion has a threaded opening 49 formed at the rear end thereof, and the screw member 35 is screwed together. The rear end portion of the screw member 35 is screwed to the fixing member 51. The fixing member 51 is fixed to the outer diameter side guide portion 25, thereby being installed on the outer diameter side guide portion 25.

  Thereby, the support portion 29 fixed to the outer diameter side guide portion 25 changes the screwing depth of the screw member 35 with the coil support member 33 due to the rotation of the socket wrench 39 by the position adjusting portion 37. The amount of protrusion at the tip is adjusted.

  As described above in detail, according to the coil end part forming apparatus 21 according to the present embodiment, the applied pressing force is not transmitted beyond the support part 29, and the coil end part 17 uses the support part 29 as a fulcrum. The closed end of the slot 13 is pressed toward the outer diameter side of the stator core 11. Excessive pressing force is not applied to the coil end portion 17 at the base from the support portion 29 and is not unnecessarily deformed.

  The coil end portion 17 is sandwiched between the inner diameter side guide portion 23 as the first guide portion and the outer diameter side guide portion 25 as the second guide portion from the open end side and the closed end side of the slot 13. Since the coil support member 33 protrudes from the support portion 29 toward the inner diameter side guide portion 23 from the inner side surface of the outer diameter side guide portion 25, the coil support member 33 serves as a fulcrum. The end portion 17 is pressed toward the closed end side of the slot 13. Since the coil support member 33 receives the pressing force, an excessive pressing force is not applied to the portion of the coil end portion 17 beyond the coil support member 33. The coil end portion 17 is not unnecessarily deformed beyond the support portion 29, and a pressing force is applied only to a predetermined portion of the coil end portion 17 to reach the molding position by the inner / outer diameter side guide portions 23, 25. Press molding can be performed.

  Since the coil support member 33 is brought into contact with the coil end portion 17 at the tip of the cuff portion 19 of the slot insulating paper, the pressing force at the time of press molding is not transmitted to the cuff portion 19, and the coil end portion 17 The cuff part 19 is pressed by inadvertent deformation, and deformation and tearing do not occur.

  Here, if the coil support member 33 is set to be pressed against the coil end portion 17, it can be reliably brought into contact with the coil end portion 17, and the pressing force at the time of press molding is reliably received by the support portion 29, It is not transmitted beyond the support part 29.

  In addition, since the protrusion amount of the coil support member 33 can be adjusted by the position adjustment unit 37, the coil support member 33 in the support unit 29 can be adjusted regardless of the specifications and manufacturing variations of the stator core 11, the cuff unit 19, and the coil end unit 17. The positional relationship with the coil end portion 17 can always be adjusted to a predetermined positional relationship, and the coil support member 33 can be disposed as a predetermined forming fulcrum during press molding.

The present invention is not limited to the above-described embodiment, and it goes without saying that various improvements and modifications can be made without departing from the spirit of the present invention.
For example, in the present embodiment, the case where the coil support member 33 abuts on or presses the coil end portion 17 at the tip of the cuff portion 19 has been described, but the present invention is limited to this. Instead of this, it is also possible to make a configuration in which the cuff part 19 or both the cuff part 19 and the coil end part 17 ahead of the cuff part 19 are brought into contact with or pressed.
Further, in the present embodiment, the case where the pressing portion 27 is provided in an annular shape and the inner diameter side guide portion 23 and the outer diameter side guide portion 25 are provided for every quarter circle has been described as an example. It is also possible to use a configuration in which the coil end part forming device or / and the stator core 11 are rotated and processed sequentially for each press forming, provided in a part of the upper part. In addition to the configuration of the inner diameter side guide portion 23 and the outer diameter side guide portion 25, the pressing portion 27 can be configured in an arc shape. In this case, it is needless to say that the number of divisions on the circumference is not limited to a quarter circle, and an appropriate number of divisions can be adopted.
Further, in this embodiment, the case where the closed end of the slot is on the outer diameter side of the stator core has been described as an example. However, when the closed end of the slot is on the inner diameter side of the core, the inner / outer diameter side guide portion If the role is reversed, it can be applied as it is.
It goes without saying that the surface shape of the inner diameter side guide portion 23 and the outer diameter side guide portion 25 facing the coil end portion 17 can be set according to the press-molding shape of the coil end portion 17.
In the present embodiment, the coil to be wound is described as being a coil bundle wire, but the present invention is not limited to this, and when a sheet-like energizing member having a predetermined width is wound. Is also applicable.

It is a figure which shows the state in which the coil bundle wire was inserted from the opening end side of the slot in the inner diameter side of a stator core. It is a figure which shows the state which press-molded the coil end part to the closed end side of the slot in the outer diameter side of a stator core. It is a top view of a coil end part shaping | molding apparatus. It is sectional drawing which shows the XX cross section in FIG. It is sectional drawing which shows the state which press-molded the coil end part with the coil end part shaping | molding apparatus. It is a figure which shows the structure of the position adjustment part which adjusts the protrusion amount of the coil support member in a support part. It is a perspective view which shows the structure of a support part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Stator core 13 Slot 15 Coil bundle 17 Coil end part 19 Cuff part 21 Coil end part shaping | molding apparatus 23 Inner diameter side guide part 25 Outer diameter side guide part 27 Press part 29 Support part 31 Opening part 33 Coil support member 35 Screw member 37 Position Adjustment unit 39 Socket wrench 41 Rotating actuator 43 Feeding mechanism unit 45 Connecting rod 47 Actuator

Claims (5)

In the coil end part forming apparatus for pressing and forming the coil end part of the coil wound between the slots of the stator core toward the closed end side of the slot,
A coil end portion forming apparatus comprising a support portion that contacts the coil end portion from the closed end side of the slot and provides a forming fulcrum during press forming. In the coil end part forming apparatus for pressing and forming the coil end part of the coil wound between the slots of the stator core toward the closed end side of the slot,
A first guide portion that guides the coil end portion to a molding position on the opening end side of the slot during press molding;
A second guide portion that guides the coil end portion to a molding position on the closed end side of the slot at the time of press molding;
A pressing portion that presses the coil end portion between the first guide portion and the second guide portion; and
A coil end portion forming apparatus, comprising: a support portion that protrudes from an inner surface of the second guide portion at the time of press forming and abuts against the coil end portion to provide a forming fulcrum.   3. The coil end part forming apparatus according to claim 1, wherein the support part contacts the coil end part via a cuff part of slot insulating paper or / and beyond the cuff part.   The said support part presses the said coil end part to the opening end side of a slot, The coil end part shaping | molding apparatus of Claim 3 characterized by the above-mentioned.   5. The coil end part forming apparatus according to claim 1, further comprising a position adjusting unit that adjusts a protruding amount of the support part from an inner surface of the second guide part. 6.

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