WO2022130557A1 - Winding nozzle and winding machine - Google Patents

Winding nozzle and winding machine Download PDF

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Publication number
WO2022130557A1
WO2022130557A1 PCT/JP2020/047095 JP2020047095W WO2022130557A1 WO 2022130557 A1 WO2022130557 A1 WO 2022130557A1 JP 2020047095 W JP2020047095 W JP 2020047095W WO 2022130557 A1 WO2022130557 A1 WO 2022130557A1
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WO
WIPO (PCT)
Prior art keywords
winding
nozzle
end surface
tip
iron core
Prior art date
Application number
PCT/JP2020/047095
Other languages
French (fr)
Japanese (ja)
Inventor
計憲 足達
雄哉 横手
裕史 庄子
義和 藤末
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN202080106660.1A priority Critical patent/CN116458044A/en
Priority to JP2022569416A priority patent/JP7378645B2/en
Priority to PCT/JP2020/047095 priority patent/WO2022130557A1/en
Publication of WO2022130557A1 publication Critical patent/WO2022130557A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/095—Forming windings by laying conductors into or around core parts by laying conductors around salient poles

Definitions

  • the present disclosure relates to a winding nozzle and a winding machine for manufacturing a coil, and particularly to a shape of a nozzle for feeding a winding.
  • a coil used for a stator of an electric motor is manufactured by winding a winding around an iron core constituting the stator.
  • a winding machine is used to manufacture the coil.
  • the winding machine has a nozzle for supplying windings and a nozzle holding portion for holding the nozzles.
  • the winding is unwound from a nozzle attached to a nozzle holding portion that moves in the horizontal direction, and the winding is wound around the iron core.
  • the nozzle is moved so that the tip of the nozzle orbits around the iron core around the iron core, and the winding is wound around the iron core to form a coil.
  • the nozzle has, for example, a cylindrical shape, and has a fixed side end surface fixed to the nozzle holding portion and a tip surface on the side from which the winding is pulled out. Further, the nozzle has a winding through portion formed so that the winding passes from the fixed side end surface to the tip surface (see, for example, Patent Document 1).
  • the winding through portion according to one embodiment described in Patent Document 1 is a winding insertion groove formed in a groove shape on the side surface of the nozzle body.
  • the wire insertion groove extends along the axial direction of the nozzle from the fixed side end surface to the tip surface.
  • the winding through portion has a groove shape
  • the winding is always pulled while the winding machine is winding the stator, so that the winding is disconnected from the winding insertion groove. There is no such thing.
  • the winding machine is paused and restarted, the winding may come out of the winding insertion hole.
  • the iron core of the stator is provided with an insulator having an insulating property.
  • the crossover wiring connecting the teeth of the stator is fixed, or terminals and the like are arranged. If the winding thread is groove-shaped, the winding may come off the winding insertion hole when the winding is entwined with the insulator or when the crossover wiring is passed between the teeth. If the winding is disengaged from the winding insertion hole, the winding operation cannot be continued, so the winding machine must be stopped and the worker must reinsert the winding into the winding insertion hole. rice field.
  • Patent Document 1 also proposes an embodiment in which the winding through portion is composed of a winding insertion hole having a through hole shape penetrating from the fixed side end surface to the tip surface.
  • the winding is inserted into the winding threading portion from the fixed side end surface of the nozzle, passes through the winding threading portion, and is drawn out from the tip surface.
  • the nozzle disclosed in Patent Document 1 has a winding threading portion formed so that the winding can pass through. Further, as described above, the winding threading portion is formed in a groove shape or a through hole shape.
  • the winding through portion has a through hole shape
  • the winding through portion has a through hole shape
  • the bending angle of the winding when the winding is inserted into the winding insertion hole is larger than that in the case of the groove shape. Therefore, the winding is not smoothly inserted into the winding insertion hole, and a large tensile load is applied to the winding. That is, there is a problem that the winding is strongly pulled during the winding operation of the winding machine, and the elongation rate of the winding increases.
  • the elongation rate of the winding increased, the electric resistance of the coil composed of the winding increased, and the load of the electric motor increased.
  • the tip surface of the nozzle has an R shape, and the drawn winding is bent along the R shape.
  • the R shape is large, the elongation rate of the winding does not increase because an excessive force is not applied to the winding. Therefore, in Patent Document 1, when the winding through portion has a through hole shape, the winding insertion hole is formed at a position deviated from the central axis of the nozzle for the purpose of increasing the R shape. As a result, the inner wall of the nozzle on the side where the winding insertion hole is provided becomes thin, the strength becomes insufficient, and it is not suitable for winding with a strong tension.
  • the present disclosure has been made to solve such a problem, prevent the winding from coming off the nozzle during the winding operation or other operation of the winding machine, and secure the strength of the nozzle. Further, it is an object of the present invention to provide a winding nozzle and a winding machine capable of reducing the elongation rate of the winding.
  • the winding nozzle according to the present disclosure is used in a winding machine in which a winding is wound around an iron core to form a coil, has a columnar outer shape, and the winding is pulled out from a tip surface to move around the iron core.
  • a winding nozzle that moves and winds the winding around the iron core, at a first end surface that is a fixed side end surface attached to a nozzle holding portion of the winding machine, and at the tip surface from which the winding is pulled out.
  • a second end face, a winding threading portion extending in the longitudinal direction of the winding nozzle from the first end face to the second end face so that the winding passes from the first end face to the second end face, and the said.
  • the second end surface is provided with a groove-shaped tip groove portion that communicates with the winding through portion, and the tip groove portion is the second end surface from the first side surface constituting the outer periphery of the winding nozzle.
  • the outer circumference of the winding nozzle is formed and extends to the second side surface facing the first side surface, and the winding through portion is arranged so as to be inclined with respect to the central axis extending in the longitudinal direction of the winding nozzle.
  • the direction in which the winding through portion is inclined with respect to the central axis is the direction opposite to the extending direction of the tip groove portion.
  • the winding machine includes at least one winding nozzle, a nozzle holding portion for holding the winding nozzle, and a drive unit for horizontally moving the nozzle holding portion. ..
  • the winding is prevented from coming off from the nozzle during the winding operation or other operation in the winding machine, and the strength of the nozzle is ensured. Further, the elongation rate of the winding can be reduced.
  • FIG. It is a schematic diagram which shows the whole structure of the winding machine 100 which concerns on Embodiment 1.
  • FIG. It is a top view which shows an example of the structure of the stator 10 used for an electric motor or the like. It is a side view of the stator 10 shown in FIG. It is a figure which shows an example of the state in which the stator 10 is mounted. It is a perspective view which shows the winding nozzle 50 when the coil 2 is formed in the iron core 1 by the winding machine 100 which concerns on Embodiment 1.
  • FIG. FIG. 5 is a plan view of FIG. It is a top view which shows the movement of the winding nozzle 50 when the crossover wire 3A is passed to the iron core 1 by the winding machine 100 which concerns on Embodiment 1.
  • FIG. 1 It is a perspective view of the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1.
  • FIG. 2 is a perspective view of the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1.
  • FIG. It is a partially enlarged perspective view which shows the tip surface 56 of the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1.
  • FIG. It is (a) sectional view and (b) side view which shows the structure of the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1.
  • FIG. It is a schematic diagram of the state in which the winding 3 is wound around the tooth 1a of the iron core 1 in the winding machine 100 according to the first embodiment. It is explanatory drawing of the cross-sectional structure of the iron core 1 in which the coil 2 was formed by the winding machine 100 which concerns on Embodiment 1.
  • FIG. As a comparative example of the winding nozzle 50 of the winding machine 100 according to the first embodiment, it is explanatory drawing which shows the structure of the winding nozzle 150 described in Patent Document 1.
  • FIG. 1 is a schematic view showing the overall structure of the winding machine 100 according to the first embodiment.
  • FIG. 2 is a plan view showing an example of the structure of the stator 10 used in an electric motor or the like.
  • FIG. 3 is a side view of the stator 10 shown in FIG. FIG. 3 shows the side surface of one iron core 1 constituting the stator 10.
  • the winding machine 100 is, for example, a device for forming the coil 2 constituting the stator 10 of the electric motor 20 (see FIG. 4).
  • the winding machine 100 forms the coil 2 by winding the winding 3 around the iron core 1 constituting the stator 10.
  • the iron core 1 has a teeth 1a and a slot surface 1b.
  • the iron core 1 is schematically represented, and the iron core 1 is not limited to the shape shown in FIG.
  • the stator 10 is formed by arranging a plurality of iron cores 1 in an annular shape.
  • the number of iron cores 1 may be any number, and is appropriately determined depending on the specifications and applications of the motor 20 and the like.
  • each iron core 1 includes a U-side insulator 4 and an L-side insulator 5.
  • the U-side insulator 4 and the L-side insulator 5 are integrally molded with the iron core 1, or are configured by attaching a separately molded one to the iron core 1.
  • the U-side insulator 4 and the L-side insulator 5 are composed of insulating members and have insulating properties.
  • a crossover 3A (see FIG. 7) connecting the coils 2 is fixed to the U-side insulator 4 and the L-side insulator 5, or terminals (not shown) or the like are arranged.
  • the stator 10 is formed as follows. First, as shown in FIG. 5, which will be described later, in a state where a plurality of iron cores 1 are linearly connected, the winding machine 100 winds the winding wire 3 around the slot surface 1b of each iron core 1 to form the coil 2. To. After the coil 2 is formed on the slot surface 1b of each iron core 1, a plurality of linearly connected iron cores 1 are formed into an annular shape, and among the plurality of connected iron cores 1, the iron cores 1 located at both ends are joined by welding or the like. By doing so, the annular stator 10 shown in FIG. 2 is formed.
  • FIG. 4 is a diagram showing an example of a state in which the stator 10 is mounted.
  • the stator 10 is built in, for example, the electric motor 20.
  • the electric motor 20 is composed of a stator 10 and a rotor 11.
  • the stator 10 is formed by arranging a plurality of iron cores 1 in an annular shape, so that a tubular portion is formed on the inner peripheral side of each iron core 1.
  • the rotor 11 is arranged in the cylindrical portion of the stator 10.
  • the rotor 11 has a cylindrical shape and is fixed to the rotating shaft 12.
  • the rotor 11 is rotationally driven by the rotation of the rotating shaft 12.
  • FIG. 4 shows an example in which the motor 20 is mounted on a compressor 200 used for an outdoor unit of an air conditioner (not shown).
  • the electric motor 20 is arranged in the housing 200a of the compressor 200.
  • a compression mechanism 200b is provided at the bottom of the housing 200a.
  • the compression mechanism 200b compresses the refrigerant sucked from the suction port 200c of the compressor 200, and discharges the compressed refrigerant from the discharge port 200d of the compressor 200.
  • the compression mechanism 200b is driven by the electric motor 20.
  • electric power is supplied to the coil 2 from the wiring connected to the stator 10, and the rotor 11 is rotationally driven by the magnetic field generated by the coil 2 and the iron core 1.
  • the winding machine 100 includes a nozzle holding portion 61 to which a winding nozzle 50 is attached, a drive unit 60 that moves the nozzle holding portion 61 in the horizontal direction, and a pair that guides the winding 3. It is equipped with a pulley 62. Further, the winding machine 100 includes a tensioner portion 63 for adjusting the tension of the winding 3, and a winding bobbin 64 in which the winding 3 is stored.
  • the nozzle holding portion 61 is horizontally moved by the drive unit 60 in the X and Z directions of FIG. 1, as schematically indicated by the arrow 90.
  • the X direction is the width direction corresponding to the left-right direction of the paper surface
  • the Z direction is the depth direction orthogonal to the X direction.
  • the Y direction is a vertical direction orthogonal to the X direction and the Z direction.
  • the X and Z directions are, for example, the horizontal direction
  • the Y direction is, for example, the vertical direction.
  • the winding 3 is pulled out from the winding bobbin 64, is guided by a pair of pulleys 62 through the tensioner portion 63, and is passed through the nozzle holding portion 61.
  • the winding 3 that has passed through the nozzle holding portion 61 is drawn out from the tip end portion of the winding nozzle 50 through the winding nozzle 50 held by the nozzle holding portion 61.
  • the tip of the winding 3 is fixed to the iron core 1, and the winding 3 is wound around the slot surface 1b of the teeth 1a.
  • the winding machine 100 includes a control device 80, and the control device 80 controls at least a mechanism for rotating the drive unit 60, the tensioner unit 63, and the winding nozzle 50.
  • the control device 80 is composed of a processing circuit.
  • the processing circuit is composed of dedicated hardware or a processor.
  • the dedicated hardware is, for example, an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).
  • the processor executes a program stored in memory.
  • the control device 80 has a storage unit (not shown).
  • the storage unit is composed of a memory.
  • the memory is a non-volatile or volatile semiconductor memory such as RAM (RandomAccessMemory), ROM (ReadOnlyMemory), flash memory, EPROM (ErasableProgrammableROM), or a disk such as a magnetic disk, flexible disk, or optical disk. be.
  • FIG. 5 is a perspective view showing a winding nozzle 50 when the coil 2 is formed on the iron core 1 by the winding machine 100 according to the first embodiment.
  • FIG. 6 is a plan view of FIG.
  • the winding 3 is wound around each core 1 in a state where the stator 10 is unfolded so that the cores 1 of the stator 10 are arranged in a straight line.
  • the coil 2 is formed.
  • the winding nozzle 50 has a cylindrical shape, and is provided with a winding through portion 51 through which the winding 3 passes.
  • the winding machine 100 is provided with three winding nozzles 50. As shown in FIG.
  • the winding machine 100 simultaneously moves the three winding nozzles 50 to simultaneously wind the winding 3 on the slot surface 1b of the teeth 1a of the three iron cores 1 from the first to the third from the right. Wrap it.
  • the winding nozzle 50 is arranged so that the direction in which the winding 3 is passed, that is, the axial direction of the winding nozzle 50 is orthogonal to the plane on which the stator 10 is developed.
  • the winding nozzle 50 moves along the locus t shown in FIG. That is, the winding nozzle 50 moves around the teeth 1a so as to draw a substantially rectangular shape, and winds the winding 3 around the teeth 1a.
  • the winding nozzle 50 is installed so as to be rotatable about the central axis A of the winding nozzle 50 in the direction of the rotation direction r in FIG.
  • the locus t shown in FIG. 6 is an example, and the winding nozzle 50 may move around the teeth 1a so as to draw another shape.
  • the rotation direction r may be in the opposite direction (that is, clockwise).
  • FIG. 7 is a plan view showing the movement of the winding nozzle 50 when passing the crossover 3A to the iron core 1 by the winding machine 100 according to the first embodiment.
  • the winding machine 100 winds the winding 3 around the teeth 1a of the three iron cores 1 at the same time. That is, in the first embodiment, first, as shown in FIG. 6, the winding 3 is simultaneously wound around the teeth 1a of the three iron cores 1 from the first to the third from the right to form the coil 2. Next, as shown in FIG. 7, the positions of the three winding nozzles 50 are moved, and the winding 3 is simultaneously wound around the teeth 1a of the three iron cores 1 from the fourth to the sixth from the right to wind the coil 2. Form.
  • the winding machine 100 groups the three iron cores 1 into one group, and forms the coils 2 in order for each group in the direction of the arrow D1 in FIG. 7.
  • the crossover 3A is passed between the groups without cutting the winding 3, and the coil 2 of the next group is formed. Wind the winding 3 around the teeth 1a.
  • the crossover 3A is the winding 3 passed between the teeth 1a included in each of the two adjacent groups. In the example of FIG. 7, the crossover 3A is passed from the teeth 1a of the first iron core 1 from the right to the teeth 1a of the fourth iron core 1 from the right.
  • crossover 3A is passed from the teeth 1a of the second iron core 1 from the right to the teeth 1a of the fifth iron core 1 from the right, and the sixth from the teeth 1a of the third iron core 1 from the right.
  • a crossover 3A is passed to the teeth 1a of the iron core 1 of the above.
  • FIG. 8 and 9 are perspective views of the winding nozzle 50 of the winding machine 100 according to the first embodiment.
  • FIG. 10 is a partially enlarged perspective view showing the tip surface 56 of the winding nozzle 50 of the winding machine 100 according to the first embodiment.
  • FIG. 10 shows a state in which the tip surface 56 is viewed from the lower side of FIGS. 8 and 9.
  • the tip opening portion 70 shown in FIGS. 8 and 9 is shown by a broken line.
  • FIG. 11 is a cross-sectional view (a) and a side view (b) showing the configuration of the winding nozzle 50 of the winding machine 100 according to the first embodiment.
  • FIG. 11B shows the tip surface 56.
  • the configuration of the winding nozzle 50 will be described with reference to FIGS. 8 to 11.
  • the winding nozzle 50 has a cylindrical shape. As shown in FIG. 11A, the winding nozzle 50 is provided with a winding threading portion 51 for passing the winding 3.
  • the winding through portion 51 is composed of a through hole portion 71 having a through hole shape and a tip open portion 70 formed in an open state by opening to the outside.
  • One end of the winding nozzle 50 is a fixed side end surface 55 (first end surface) fixed to the nozzle holding portion 61 of the winding machine 100 shown in FIG.
  • the winding 3 is inserted into the winding through portion 51 from the winding insertion port 55a provided on the fixed side end surface 55.
  • the other end of the winding nozzle 50 is a tip surface 56 (second end surface).
  • the winding 3 that has passed through the winding through portion 51 is pulled out from the winding supply portion 56a of the tip surface 56 and used for winding operation to the teeth 1a.
  • the shape of the winding nozzle 50 is not limited to the cylindrical shape, and any other shape may be taken as long as the winding 3 is passed from the fixed side end surface 55 to the tip surface 56. Is also good. That is, the winding nozzle 50 may have, for example, an elliptical column shape having an elliptical bottom surface, or a polygonal column shape having a polygonal bottom surface.
  • the fixed side end surface 55 of the winding nozzle 50 is held and fixed by the nozzle holding portion 61. Further, the winding machine 100 passes the winding 3 through the winding through portion 51 from the fixed side end surface 55 of the winding nozzle 50 to the tip surface 56, and the winding supply portion of the tip surface 56 of the winding nozzle 50. Pull out the winding 3 from 56a. Then, as shown in FIG. 6, the winding machine 100 moves the winding nozzle 50 around the teeth 1a of the iron core 1, so that the winding 3 is drawn out from the winding supply portion 56a of the tip surface 56. Wrap around the teeth 1a.
  • the winding nozzle 50 is provided with a winding through portion 51 extending in the longitudinal direction of a cylindrical shape.
  • the winding threading portion 51 extends from the fixed side end surface 55 to the tip surface 56 in the longitudinal direction (axial direction) of the winding nozzle 50 so that the winding 3 passes from the fixed side end surface 55 to the tip surface 56. ..
  • the winding through portion 51 has a through hole portion 71 having a through hole shape and a tip open portion 70 formed in an open state.
  • the through hole portion 71 is composed of a through hole that penetrates from the winding insertion port 55a provided on the fixed side end surface 55 to the tip opening portion 70 formed on the side surface 50a of the winding nozzle 50.
  • the winding insertion port 55a provided on the fixed side end surface 55 is arranged at the central portion of the fixed side end surface 55 as shown in FIGS. 8 and 11 (a). That is, as shown in FIG. 11A, the winding insertion port 55a is provided on the central axis A of the winding nozzle 50 at the fixed side end surface 55 of the winding nozzle 50.
  • the winding insertion port 55a does not necessarily have to be arranged on the central axis A of the winding nozzle 50. That is, the winding insertion port 55a may be slightly shifted from the central axis A of the winding nozzle 50. However, in that case, the winding insertion port 55a is shifted from the central axis A of the winding nozzle 50 so that the inner wall surface 51a of the winding through portion 51 does not become thin.
  • side surface 50a-1 the upper side surface portion in FIG. 11A
  • side surface 50a-2 the lower side surface portion is referred to as “side surface”. It will be called "50a-2”.
  • the through hole portion 71 of the winding through portion 51 is provided so as to be inclined with respect to the central axis A of the winding nozzle 50. More specifically, the longitudinal direction of the inner wall surface 51a of the winding threading portion 51 is inclined by an angle ⁇ with respect to the central axis A of the winding nozzle 50.
  • the through hole 71 of the winding threading portion 51 extends from the winding insertion port 55a to the tip opening portion 70.
  • the through hole portion 71 has an inner wall surface 51a.
  • the tip opening portion 70 is formed on the side surface 50a-2 of the winding nozzle 50 as shown in FIG. 11A. As shown in FIGS. 8 and 9, the tip opening portion 70 has a rectangular opening portion 70a. As described above, the end portion of the winding threading portion 51 on the tip end surface 56 side is the tip opening portion 70.
  • the tip opening portion 70 is not provided with the inner wall surface 51a of the winding through portion 51, and is in a state of being open to the outside.
  • a winding supply portion 56a is provided on the tip surface 56 of the winding nozzle 50.
  • the winding supply portion 56a has a groove-shaped tip groove portion 52 and a winding supply port 53.
  • the tip groove portion 52 is a groove formed on the tip surface 56.
  • the tip groove portion 52 extends from the side surface 50a-2 (first side surface) toward the side surface 50a-1 (second side surface) along the radial direction of the winding nozzle 50. Therefore, the extending direction of the tip groove portion 52 is the direction of the arrow D2 in FIG. 11 (b). That is, in the paper surface of FIG. 11B, the direction is from bottom to top.
  • the extending direction of the tip groove portion 52 is orthogonal to the central axis A of the winding nozzle 50. Further, both ends of the tip groove portion 52 in the extending direction are opened on the side surfaces 50a-1 and 50a-2 of the winding nozzle 50 main body. The end of the tip groove 52 on the side surface 50a-1 side is a winding supply port 53 from which the winding 3 is pulled out.
  • the winding threading portion 51 is inclined with respect to the central axis A of the winding nozzle 50.
  • the direction in which the winding threading portion 51 is inclined is the direction of arrow D3 in FIG. 11 (a). That is, in the paper surface of FIG. 11B, the direction is from top to bottom.
  • the winding threading portion 51 is inclined in the direction from the side surface 50a-1 (second side surface) to the side surface 50a-2 (first side surface). In this way, the winding threading portion 51 is inclined in the direction opposite to the extending direction of the tip groove portion 52.
  • the winding threading portion 51 and the tip groove portion 52 communicate with each other. That is, the winding through portion 51 and the tip groove portion 52 are connected and formed so as to form a path for one winding 3.
  • the first intersection 57 which is a portion where the inner wall surface 51a of the winding through portion 51 and the inner wall surface 52a of the tip groove portion 52 intersect, is formed from a curved surface, and the inner wall surface 51a is formed. And the inner wall surface 52a are connected so as to be a continuous surface.
  • the first intersection 57 has an arc shape in the cross section shown in FIG. 11 (a), but may have another curved shape, and is cut when the windings 3 come into contact with each other. It is desirable to have a smooth curve so that it does not occur.
  • the second intersection 58 which is a portion where the inner wall surface 52a of the tip groove 52 and the side surface 50a-1 of the winding nozzle 50 intersect, is formed from a curved surface and has an inner surface.
  • the wall surface 52a and the side surface 50a-1 are connected so as to form a continuous surface. That is, all the ridge lines formed by the intersection of the inner wall surface 52a and the side surface 50a-1 are formed of curved surfaces.
  • the second intersection 58 has an arc shape in FIG. 11 (b), but may have another curved shape so that cutting does not occur when the windings 3 come into contact with each other. It is desirable to have a smooth curve.
  • the length s is the length from the first intersection 57 to the winding supply port 53 of the tip groove 52.
  • the portion of this length s is hereinafter referred to as a portion S.
  • the longer the length s of the portion S the more gently the winding 3 can bend along the first intersection 57.
  • the shorter the length s of the portion S the sharper the winding 3 will bend along the first intersection 57.
  • the through hole portion 71 of the winding through portion 51 is inclined and the winding through portion 51 is provided.
  • a tip opening portion 70 is provided at the tip.
  • the tip opening portion 70 is opened at the side surface 50a-2 of the winding nozzle 50.
  • the third intersection 59 where the inner wall surface 51a of the winding threading portion 51 and the fixed side end surface 55 intersect is formed from a curved surface, and the inner wall surface 51a and the fixed side are formed. It is connected so that the end surface 55 and the end surface 55 are continuous surfaces.
  • the third intersection 59 has an arc shape in the cross section of FIG. 11A, but may have another curved shape, and is a smooth curve so that cutting does not occur when the windings 3 come into contact with each other. It is desirable to be composed of.
  • FIG. 12 and 13 are explanatory views showing a state in which the winding 3 is passed through the winding nozzle 50 of the winding machine 100 according to the first embodiment.
  • FIG. 14 is a schematic view of a winding machine 100 according to the first embodiment in a state where the winding 3 is wound around the teeth 1a of the iron core 1.
  • the winding nozzle 50 is formed in a groove shape on the winding through portion 51 formed so that the winding 3 passes from the fixed side end surface 55 to the tip surface 56 and the tip surface 56.
  • the tip groove portion 52 is provided.
  • the winding 3 enters the winding through portion 51 from the fixed side end surface 55 of the winding nozzle 50 through each portion of the winding machine 100, and reaches the tip surface 56 along the winding through portion 51.
  • the winding wire 3 reaching the tip surface 56 is formed along the curved surface of the first intersection 57, which is the intersection of the winding threading portion 51 and the tip groove portion 52 of the winding nozzle 50. It is bent toward the side surface 50a-1 of the winding nozzle 50.
  • the side surface 50a-1 is a surface opposite to the side surface 50a-2 in which the tip opening portion 70 is formed. That is, the side surface 50a-1 and the side surface 50a-2 are arranged so as to face each other.
  • the angle formed by the inner wall surface 51a of the winding threading portion 51 and the inner wall surface 52a of the tip groove portion 52 is an angle ⁇ .
  • the angle ⁇ is an acute angle smaller than 90 °. Therefore, at the first intersection 57, the winding 3 is bent by an angle ⁇ .
  • the winding wire 3 bent by an angle ⁇ toward the side surface 50a-1 side along the curved surface of the first intersection 57 advances along the tip groove portion 52. After that, it intersects the longitudinal direction of the winding nozzle 50 and the extending direction of the tip groove 52 along the curved surface of the second intersection 58, which is the intersection of the tip groove 52 and the side surface 50a of the winding nozzle 50. Pulled out in the direction.
  • the angle formed by the inner wall surface 52a of the tip groove portion 52 and the tangent line of the curved surface of the second intersection 58 is an angle ⁇ .
  • the angle ⁇ is, for example, an obtuse angle larger than 90 °. Therefore, at the second intersection 58, the winding 3 is bent by an angle ⁇ .
  • the size of the angle ⁇ is not particularly limited. That is, the angle ⁇ may be 90 ° or less than 90 °.
  • the winding threading portion 51 is arranged so as to be inclined with respect to the central axis A of the winding nozzle 50.
  • the shape of the R curved surface of the first intersection 57 becomes larger and the radius R of the R curved surface becomes larger than in the case where the winding threading portion 51 is not tilted.
  • the first embodiment has a structure in which the radius R or the curvature of the first intersection 57 can be made as large as possible with respect to the diameter of the winding nozzle 50. In this way, when the R curved surface shape of the first intersection 57 becomes large, an unreasonable force is not applied to the winding 3, and the tensile load of the winding 3 becomes small, so that the elongation rate of the winding 3 increases. Can be prevented.
  • the tip opening portion 70 opened by the side surface 50a-2 of the winding nozzle 50 main body is provided at the end of the winding threading portion 51 on the tip surface 56 side.
  • the tip opening portion 70 does not have an inner wall surface 51a and is in an open state to the outside. Therefore, the movement of the winding wire 3 passing through the tip opening portion 70 is not suppressed by the inner wall surface 51a. As a result, no unreasonable force is applied to the winding 3 passing through the tip opening portion 70, and the winding 3 is not strongly pulled, so that it is possible to further prevent an increase in the elongation rate of the winding 3. ..
  • the winding nozzle 50 orbits around the teeth 1a and winds the winding 3 around the slot surface 1b.
  • the portion wound around the slot surface 1b is referred to as a winding portion 3a
  • the portion located between the winding portion 3a and the tip groove portion 52 is referred to as a winding drawing portion 3b.
  • the extending direction indicated by the arrow D2 of the tip groove portion 52 is directed so as to form an angle ⁇ with respect to the winding drawing portion 3b of the winding 3. Therefore, the winding 3 is bent along the second intersection 58 at the portion drawn out from the tip groove portion 52.
  • the winding 3 is drawn out while being pressed against the curved surface of the second intersection 58 at the winding supply port 53 of the tip groove portion 52 of the winding nozzle 50.
  • the winding 3 is warped with respect to the slot surface 1b of the teeth 1a due to the curved surface of the second intersection 58. That is, the winding lead-out portion 3b is warped so as to be convex toward the slot surface 1b.
  • the control device 80 controls the horizontal position and the rotation angle of the winding nozzle 50 so that the angle ⁇ becomes a constant value.
  • the winding nozzle 50 is controlled by the control device 80 so that the horizontal position fluctuates and the rotation angle becomes constant. Therefore, the winding 3 is wound while being wound around the teeth 1a while receiving a force so as to always warp with respect to the slot surface 1b.
  • FIG. 15 is an explanatory view of the cross-sectional structure of the iron core 1 in which the coil 2 is formed by the winding machine 100 according to the first embodiment.
  • arrow 80 indicates, for example, the X direction of FIG. 1
  • arrow 81 indicates, for example, the Y direction of FIG.
  • the cross section shown in FIG. 15 shows a cross section when one of the iron cores 1 of the stator 10 is cut in a plane parallel to the figure shown in FIG.
  • the winding 3 during the winding operation is warped in a bow shape by the winding nozzle 50, and the apex 3c warped in the bow shape faces the slot surface 1b side.
  • FIG. 14 shows a cross section when one of the iron cores 1 of the stator 10 is cut in a plane parallel to the figure shown in FIG.
  • the winding 3 during the winding operation is warped in a bow shape by the winding nozzle 50, and the apex 3c warped in the bow shape faces the slot surface 1b side.
  • the winding 3 extends in the direction perpendicular to the slot surface 1b, the gap w between the slot surface 1b and the first layer of the coil 2 is reduced, and further. Since the gap is reduced even in the second and subsequent layers, the coil 2 is wound in the winding direction. As described above, when the gap w between the slot surface 1b and the winding 3 and the gap between the windings 3 are reduced, more windings 3 can be wound around the slot surface 1b by that amount, so that the winding space is occupied. There is an advantage that the rate becomes high and the output of the electric motor 20 becomes large. Further, since the winding 3 forming the coil 2 is warped so as to be convex toward the slot surface 1b, it is possible to suppress the coil 2 from winding and swelling due to the rigidity of the winding 3. ..
  • FIG. 16 is an explanatory diagram showing the configuration of the winding nozzle 150 described in Patent Document 1 as a comparative example of the winding nozzle 50 of the winding machine 100 according to the first embodiment.
  • 16 (a) is a side view showing the fixed side end surface 155 of the winding nozzle 150
  • FIG. 16 (c) is a side view showing the tip surface 156 of the winding nozzle 150.
  • FIG. 16B is a cross-sectional view of the winding nozzle 150.
  • 17 and 18 are explanatory views schematically showing the winding 3 in a state of being passed through the winding nozzle 150 of the comparative example of FIG.
  • the winding through portion 151 of the winding nozzle 150 of the comparative example is composed of a through hole.
  • the winding threading portion 151 is a through hole extending from the fixed side end surface 155 to the tip end surface 156.
  • the winding threading portion 151 communicates with the tip groove portion 152 formed on the tip surface 156.
  • the winding threading portion 151 is arranged in parallel with the central axis A of the cylindrical winding nozzle 150. However, as shown in FIG. 16B, the winding threading portion 151 is not arranged on the central axis A, but is arranged at a position shifted from the central axis A.
  • part S the part is referred to as "part S".
  • the radius of curvature R increases, the length s of the portion S becomes longer, and the curve forming the portion S becomes gentle. This principle will be described below with reference to FIG. FIG. 19 is an explanatory diagram showing the relationship between the radius of curvature and the speed of the curve.
  • a point displaced from a point P on a certain curve L along the curve L by a length s is defined as a point Q.
  • the part S of the length s is regarded as an arc
  • the center of the circle is the point C
  • each PCQ is ⁇ a
  • the relationship between the radius R of the circle and the length s is expressed by the following equation (1). ..
  • ⁇ is the pi.
  • the thickness of the inner wall portion 151a of the winding through portion 151 of the comparative example is thin.
  • the strength is insufficient and it is not suitable for winding operation with a strong tension.
  • the wall thickness of the portion to which the strongest force is applied during the winding operation is increased. That is, in the first embodiment, the wall thickness of the inner wall surface 51a near the winding insertion port 55a and the vicinity of the winding supply port 53 is increased. Therefore, sufficient strength can be secured, and it is possible to handle winding operation with a strong tension.
  • the winding through portion 151 has the inner wall portion 151a over the entire length in the longitudinal direction, the movement of the winding 3 is restricted by the inner wall portion 151a, and the winding 3 is wound. A pulling load is applied to the wire 3.
  • the radius of curvature R of the first intersection 157 that bends the winding 3 by the angle ⁇ 1 is smaller, the R curved surface shape of the first intersection 157 becomes smaller. When the R curved surface shape becomes small, an unreasonable force is applied to the winding 3 and the winding 3 is strongly pulled, so that the elongation rate of the winding 3 increases.
  • the winding threading portion 51 is arranged so as to be inclined with respect to the central axis A.
  • the length s shown in FIG. 11 is further longer than the length s of the comparative example of FIG. Therefore, in the first embodiment, the radius R of the R curved surface shape of the first intersection 57 that bends the winding 3 by the angle ⁇ becomes large, and the R curved surface shape of the first intersection 57 becomes loose. Further, as is clear when comparing FIGS.
  • the angle ⁇ of the first intersection 57 of the first embodiment of the present application is smaller than the angle ⁇ 1 of the first intersection 157 of the comparative example of FIG. ..
  • the angle ⁇ 1 is approximately 90 °.
  • the tip opening portion 70 opened on the side surface 50a of the winding nozzle 50 main body is provided on the tip surface 56 side of the winding nozzle 50.
  • the tip open portion 70 does not have an inner wall surface 51a in the opening 70a and is in an open state. Therefore, no unreasonable force is applied to the winding wire 3 passing through the tip opening portion 70, and the winding wire 3 is not strongly pulled, so that it is possible to further prevent an increase in the elongation rate of the winding wire 3. Further, as described above, the longer the length s of the portion S, the looser the shape of the R curved surface of the first intersection 57.
  • the winding threading portion 51 is inclined and the tip opening portion 70 is provided, so that the length s is made as long as possible with respect to the diameter of the winding nozzle 50. Therefore, in the first embodiment, a structure in which the winding 3 is least subjected to a tensile load is realized.
  • the winding insertion port 155a is deviated from the central axis A and arranged eccentrically. Therefore, when inserting the winding 3 from the winding insertion port 155a into the winding through portion 151, it is necessary to insert the winding 3 in a bent and deformed state as shown in FIG. As a result, an unreasonable force is applied to the winding 3, and the elongation rate of the winding 3 increases.
  • the winding insertion port 55a is arranged on the central axis A. Therefore, when the winding 3 is inserted from the winding insertion port 55a into the winding through portion 51, as shown in FIG.
  • the winding threading portion 51 is arranged so as to be inclined with respect to the central axis A of the winding nozzle 50.
  • the shape of the R curved surface of the first intersection 57 becomes larger and the radius R of the R curved surface becomes larger than in the case where the winding threading portion 51 is not tilted.
  • the first embodiment has a structure in which the radius R or the curvature of the first intersection 57 can be made as large as possible with respect to the diameter of the winding nozzle 50.
  • the tip opening portion 70 opened by the side surface 50a-2 of the winding nozzle 50 main body is provided at the end of the winding threading portion 51 on the tip surface 56 side.
  • the tip opening portion 70 does not have an inner wall surface 51a and is in an open state to the outside. Therefore, the movement of the winding wire 3 passing through the tip opening portion 70 is not suppressed by the inner wall surface 51a. As a result, no unreasonable force is applied to the winding 3 passing through the tip opening portion 70, and the winding 3 is not strongly pulled, so that it is possible to further prevent an increase in the elongation rate of the winding 3. ..
  • the winding through portion 51 has a through hole portion 71 formed from the through hole.
  • the through hole portion 71 has an inner wall surface 51a. Therefore, since the winding 3 is covered with the inner wall surface 51a in the through hole portion 71, the winding 3 does not separate from the winding nozzle 50. As a result, the winding is performed during the winding operation of the winding 3 of the winding machine 100, the wiring operation of the crossover wire 3A, and the entanglement operation of the winding 3 with the U-side insulator 4 and the L-side insulator 5. 3 can be prevented from coming off the winding nozzle 50.
  • the winding threading portion 51 is arranged so as to be inclined with respect to the central axis A of the winding nozzle 50. Further, the winding insertion port 55a is arranged in the central portion of the fixed side end surface 55. Further, the inclination direction of the winding threading portion 51 is opposite to the extending direction of the tip groove portion 52. As a result, the inner wall surface 51a of the winding nozzle 50 is thickened in the vicinity of the winding insertion port 55a into which the winding 3 is inserted and in the vicinity of the winding supply port 53 from which the winding 3 is pulled out. This ensures the strength of the winding nozzle 50.

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Abstract

This winding nozzle is used in a winding machine for winding a winding onto an iron core to form a coil. The winding nozzle has a columnar outer shape, and a winding is drawn out from a distal end surface of the winding nozzle and moved around the periphery of the iron core so that the winding is wound onto the iron core. The winding nozzle comprises: a first end surface which is a fixed-side end surface attached to a nozzle retaining part of the winding machine; a second end surface which is a distal end surface from which the winding is drawn out; a winding passing part that extends in the longitudinal direction of the winding nozzle from the first end surface to the second end surface so that the winding passes from the first end surface over to the second end surface; and a distal end groove part that is formed in a groove shape in the second end surface in communication with the winding passing part. The distal end groove part extends from a first side surface which constitutes the outer periphery of the winding nozzle to a second side surface which constitutes the outer periphery of the winding nozzle and opposes the first side surface. The winding passing part is disposed so as to be inclined with respect to a center axis extending in the longitudinal direction of the winding nozzle, and the direction in which the winding passing part is inclined with respect to the center axis is opposite to the direction in which the distal end groove part extends.

Description

巻線ノズル及び巻線機Winding nozzle and winding machine
　本開示は、コイルを製造するための巻線ノズル及び巻線機に関し、特に巻線を繰り出すノズルの形状に関する。 The present disclosure relates to a winding nozzle and a winding machine for manufacturing a coil, and particularly to a shape of a nozzle for feeding a winding.
　従来、電動機の固定子等に用いられるコイルは、固定子を構成する鉄心に巻線を巻き付けることで製造される。コイルの製造には、巻線機が使用される。巻線機は、巻線を供給するノズルと、ノズルを保持するノズル保持部とを有している。巻線機において、鉄心に巻線を巻き付ける際には、水平方向に移動するノズル保持部に取り付けられたノズルから巻線が繰り出されて、鉄心に巻線が巻き回されていく。巻線機は、鉄心を中心として鉄心の周囲をノズルの先端が周回するようにノズルを移動させて、鉄心に巻線を巻き付けてコイルを形成する。 Conventionally, a coil used for a stator of an electric motor is manufactured by winding a winding around an iron core constituting the stator. A winding machine is used to manufacture the coil. The winding machine has a nozzle for supplying windings and a nozzle holding portion for holding the nozzles. In a winding machine, when winding a winding around an iron core, the winding is unwound from a nozzle attached to a nozzle holding portion that moves in the horizontal direction, and the winding is wound around the iron core. In the winding machine, the nozzle is moved so that the tip of the nozzle orbits around the iron core around the iron core, and the winding is wound around the iron core to form a coil.
　ノズルは例えば円柱形状を有し、ノズル保持部に固定される固定側端面と、巻線が引き出される側の先端面とを有している。また、ノズルは、固定側端面から先端面にわたって巻線が通るように形成された巻線通し部を有している（例えば、特許文献１参照）。 The nozzle has, for example, a cylindrical shape, and has a fixed side end surface fixed to the nozzle holding portion and a tip surface on the side from which the winding is pulled out. Further, the nozzle has a winding through portion formed so that the winding passes from the fixed side end surface to the tip surface (see, for example, Patent Document 1).
　特許文献１に記載の１つの実施形態に係る巻線通し部は、ノズル本体の側面に溝形状に形成された巻線挿通溝である。電線挿通溝は、固定側端面から先端面までノズルの軸方向に沿って延びている。 The winding through portion according to one embodiment described in Patent Document 1 is a winding insertion groove formed in a groove shape on the side surface of the nozzle body. The wire insertion groove extends along the axial direction of the nozzle from the fixed side end surface to the tip surface.
　巻線通し部が溝形状の場合、巻線機が固定子に対して巻線を行っている間は、巻線が常時引っ張られている状態であるため、巻線が巻線挿通溝から外れることはない。しかしながら、巻線機が一時停止して再起動したときに、巻線が巻線挿通孔から外れることがある。また、固定子の鉄心には、絶縁性を有するインシュレータが設けられている。インシュレータには、固定子のティース間を繋ぐ渡り配線が固定されたり、あるいは、端子等が配置される。巻線通し部が溝形状の場合、インシュレータに巻線を絡げる際、又は、ティース間に渡り配線を渡す際に、巻線が巻線挿通孔から外れることがある。巻線が巻線挿通孔から外れた場合、巻線動作を継続することはできないため、いったん、巻線機を停止させて、作業員が巻線を巻線挿通孔に挿入し直す必要があった。 When the winding through portion has a groove shape, the winding is always pulled while the winding machine is winding the stator, so that the winding is disconnected from the winding insertion groove. There is no such thing. However, when the winding machine is paused and restarted, the winding may come out of the winding insertion hole. Further, the iron core of the stator is provided with an insulator having an insulating property. In the insulator, the crossover wiring connecting the teeth of the stator is fixed, or terminals and the like are arranged. If the winding thread is groove-shaped, the winding may come off the winding insertion hole when the winding is entwined with the insulator or when the crossover wiring is passed between the teeth. If the winding is disengaged from the winding insertion hole, the winding operation cannot be continued, so the winding machine must be stopped and the worker must reinsert the winding into the winding insertion hole. rice field.
　そのため、特許文献１では、巻線通し部が、固定側端面から先端面まで貫通する貫通孔形状の巻線挿通孔から構成されている実施形態も提案している。いずれの実施形態においても、巻線は、ノズルの固定側端面から巻線通し部に挿入され、巻線通し部を通って、先端面から引き出される。 Therefore, Patent Document 1 also proposes an embodiment in which the winding through portion is composed of a winding insertion hole having a through hole shape penetrating from the fixed side end surface to the tip surface. In either embodiment, the winding is inserted into the winding threading portion from the fixed side end surface of the nozzle, passes through the winding threading portion, and is drawn out from the tip surface.
国際公開第２０２０／０６５８５３号International Publication No. 2020/065853
　特許文献１に開示されているノズルは、上述したように、巻線が通るように形成された巻線通し部を有している。また、巻線通し部は、上述したように、溝形状、又は、貫通孔形状に形成されている。 As described above, the nozzle disclosed in Patent Document 1 has a winding threading portion formed so that the winding can pass through. Further, as described above, the winding threading portion is formed in a groove shape or a through hole shape.
　巻線通し部が溝形状の場合、巻線機の再起動時、インシュレータへの巻線の絡げ動作時、あるいは、ティース間の渡り線形成時に、巻線がノズルから外れてしまうという課題があった。 When the winding thread is groove-shaped, there is a problem that the winding comes off from the nozzle when the winding machine is restarted, when the winding is entwined with the insulator, or when a crossover between teeth is formed. there were.
　一方、巻線通し部が貫通孔形状の場合、巻線がノズルから外れることはない。しかしながら、巻線通し部が貫通孔形状の場合、溝形状の場合と比較して、巻線を巻線挿通孔に挿入する際の巻線の曲げ角度が大きくなる。そのため、巻線が巻線挿通孔にスムーズに挿入されず、巻線に大きな引っ張り負荷がかかる。すなわち、巻線機での巻線動作時に、巻線が強く引っ張られ、巻線の伸び率が上昇してしまうという課題があった。巻線の伸び率が上昇した場合、巻線から構成されたコイルの電気抵抗が増加し、ひいては、電動機の負荷が増加してしまっていた。 On the other hand, if the winding through portion has a through hole shape, the winding will not come off from the nozzle. However, when the winding through portion has a through hole shape, the bending angle of the winding when the winding is inserted into the winding insertion hole is larger than that in the case of the groove shape. Therefore, the winding is not smoothly inserted into the winding insertion hole, and a large tensile load is applied to the winding. That is, there is a problem that the winding is strongly pulled during the winding operation of the winding machine, and the elongation rate of the winding increases. When the elongation rate of the winding increased, the electric resistance of the coil composed of the winding increased, and the load of the electric motor increased.
　また、特許文献１では、ノズルの先端面がＲ形状を有しており、引き出された巻線は当該Ｒ形状に沿って曲げられる。Ｒ形状が大きい場合、巻線に無理な力が加わらないため、巻線の伸び率が上昇しない。そのため、特許文献１では、巻線通し部が貫通孔形状の場合に、Ｒ形状を大きくする目的で、巻線挿通孔をノズルの中心軸からずれた位置に形成している。その結果、巻線挿通孔が設けられている側のノズルの内壁が薄肉となり、強度不足となり、強いテンションでの巻線には不向きであった。 Further, in Patent Document 1, the tip surface of the nozzle has an R shape, and the drawn winding is bent along the R shape. When the R shape is large, the elongation rate of the winding does not increase because an excessive force is not applied to the winding. Therefore, in Patent Document 1, when the winding through portion has a through hole shape, the winding insertion hole is formed at a position deviated from the central axis of the nozzle for the purpose of increasing the R shape. As a result, the inner wall of the nozzle on the side where the winding insertion hole is provided becomes thin, the strength becomes insufficient, and it is not suitable for winding with a strong tension.
　本開示は、かかる課題を解決するためになされたものであり、巻線機での巻線動作中又は他の動作中に巻線がノズルから外れることを防止し、また、ノズルの強度を確保し、さらに、巻線の伸び率の低減を図ることが可能な、巻線ノズル及び巻線機を提供することを目的とする。 The present disclosure has been made to solve such a problem, prevent the winding from coming off the nozzle during the winding operation or other operation of the winding machine, and secure the strength of the nozzle. Further, it is an object of the present invention to provide a winding nozzle and a winding machine capable of reducing the elongation rate of the winding.
　本開示に係る巻線ノズルは、鉄心に巻線を巻き付けてコイルを形成する巻線機で用いられ、柱状の外形形状を有し、先端面から前記巻線が引き出され、前記鉄心の周囲を移動して、前記巻線を前記鉄心に巻き付ける巻線ノズルであって、前記巻線機のノズル保持部に取り付けられる固定側端面である第１端面と、前記巻線が引き出される前記先端面である第２端面と、前記第１端面から前記第２端面にわたって巻線が通るように、前記第１端面から前記第２端面まで前記巻線ノズルの長手方向に延びた巻線通し部と、前記巻線通し部と連通して前記第２端面に溝状に形成された先端溝部とを備え、前記先端溝部は、前記第２端面において、前記巻線ノズルの外周を構成する第１側面から前記巻線ノズルの外周を構成し前記第１側面に対向する第２側面まで延設され、前記巻線通し部は、前記巻線ノズルの長手方向に延びる中心軸に対して傾斜して配置され、前記巻線通し部の前記中心軸に対して傾斜する方向は、前記先端溝部の延設方向と反対方向である。 The winding nozzle according to the present disclosure is used in a winding machine in which a winding is wound around an iron core to form a coil, has a columnar outer shape, and the winding is pulled out from a tip surface to move around the iron core. A winding nozzle that moves and winds the winding around the iron core, at a first end surface that is a fixed side end surface attached to a nozzle holding portion of the winding machine, and at the tip surface from which the winding is pulled out. A second end face, a winding threading portion extending in the longitudinal direction of the winding nozzle from the first end face to the second end face so that the winding passes from the first end face to the second end face, and the said. The second end surface is provided with a groove-shaped tip groove portion that communicates with the winding through portion, and the tip groove portion is the second end surface from the first side surface constituting the outer periphery of the winding nozzle. The outer circumference of the winding nozzle is formed and extends to the second side surface facing the first side surface, and the winding through portion is arranged so as to be inclined with respect to the central axis extending in the longitudinal direction of the winding nozzle. The direction in which the winding through portion is inclined with respect to the central axis is the direction opposite to the extending direction of the tip groove portion.
　本開示に係る巻線機は、少なくとも１つの上記の巻線ノズルと、前記巻線ノズルを保持するノズル保持部と、前記ノズル保持部を水平方向に移動させる駆動ユニットとを備えたものである。 The winding machine according to the present disclosure includes at least one winding nozzle, a nozzle holding portion for holding the winding nozzle, and a drive unit for horizontally moving the nozzle holding portion. ..
　本開示に係る巻線ノズル及び巻線機によれば、巻線機での巻線動作中又は他の動作中に巻線がノズルから外れることを防止し、また、ノズルの強度を確保し、さらに、巻線の伸び率の低減を図ることができる。 According to the winding nozzle and the winding machine according to the present disclosure, the winding is prevented from coming off from the nozzle during the winding operation or other operation in the winding machine, and the strength of the nozzle is ensured. Further, the elongation rate of the winding can be reduced.
実施の形態１に係る巻線機１００の全体構造を示す模式図である。It is a schematic diagram which shows the whole structure of the winding machine 100 which concerns on Embodiment 1. FIG. 電動機等に使用される固定子１０の構造の一例を示す平面図である。It is a top view which shows an example of the structure of the stator 10 used for an electric motor or the like. 図２に示した固定子１０の側面図である。It is a side view of the stator 10 shown in FIG. 固定子１０が実装された状態の一例を示す図である。It is a figure which shows an example of the state in which the stator 10 is mounted. 実施の形態１に係る巻線機１００により鉄心１にコイル２を形成する際の巻線ノズル５０を示す斜視図である。It is a perspective view which shows the winding nozzle 50 when the coil 2 is formed in the iron core 1 by the winding machine 100 which concerns on Embodiment 1. FIG. 図５の平面図である。FIG. 5 is a plan view of FIG. 実施の形態１に係る巻線機１００により鉄心１に渡り線３Ａを渡す際の巻線ノズル５０の動きを示す平面図である。It is a top view which shows the movement of the winding nozzle 50 when the crossover wire 3A is passed to the iron core 1 by the winding machine 100 which concerns on Embodiment 1. FIG. 実施の形態１に係る巻線機１００の巻線ノズル５０の斜視図である。It is a perspective view of the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1. FIG. 実施の形態１に係る巻線機１００の巻線ノズル５０の斜視図である。It is a perspective view of the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1. FIG. 実施の形態１に係る巻線機１００の巻線ノズル５０の先端面５６を示す部分拡大斜視図である。It is a partially enlarged perspective view which shows the tip surface 56 of the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1. FIG. 実施の形態１に係る巻線機１００の巻線ノズル５０の構成を示す（ａ）断面図及び（ｂ）側面図である。It is (a) sectional view and (b) side view which shows the structure of the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1. FIG. 実施の形態１に係る巻線機１００の巻線ノズル５０に巻線３を通した状態を示す説明図である。It is explanatory drawing which shows the state which passed the winding | winding 3 through the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1. FIG. 実施の形態１に係る巻線機１００の巻線ノズル５０に巻線３を通した状態を示す説明図である。It is explanatory drawing which shows the state which passed the winding | winding 3 through the winding nozzle 50 of the winding machine 100 which concerns on Embodiment 1. FIG. 実施の形態１に係る巻線機１００において鉄心１のティース１ａに巻線３を巻き付けている状態の模式図である。It is a schematic diagram of the state in which the winding 3 is wound around the tooth 1a of the iron core 1 in the winding machine 100 according to the first embodiment. 実施の形態１に係る巻線機１００によりコイル２が形成された鉄心１の断面構造の説明図である。It is explanatory drawing of the cross-sectional structure of the iron core 1 in which the coil 2 was formed by the winding machine 100 which concerns on Embodiment 1. FIG. 実施の形態１に係る巻線機１００の巻線ノズル５０の比較例として、特許文献１に記載の巻線ノズル１５０の構成を示す説明図である。As a comparative example of the winding nozzle 50 of the winding machine 100 according to the first embodiment, it is explanatory drawing which shows the structure of the winding nozzle 150 described in Patent Document 1. FIG. 図１６の比較例の巻線ノズル１５０に通した状態の巻線３を模式的に示す説明図である。It is explanatory drawing which shows typically the winding | winding 3 in the state which passed through the winding nozzle 150 of the comparative example of FIG. 図１６の比較例の巻線ノズル１５０に通した状態の巻線３を模式的に示す説明図である。It is explanatory drawing which shows typically the winding | winding 3 in the state which passed through the winding nozzle 150 of the comparative example of FIG. 曲率半径と曲線の緩急との関係を示す説明図である。It is explanatory drawing which shows the relationship between the radius of curvature and the slowness of a curve.
　以下、本開示に係る巻線ノズル及び巻線機の実施の形態について図面を参照して説明する。本開示は、以下の実施の形態に限定されるものではなく、本開示の主旨を逸脱しない範囲で種々に変形することが可能である。また、本開示は、以下の実施の形態およびその変形例に示す構成のうち、組み合わせ可能な構成のあらゆる組み合わせを含むものである。また、各図において、同一の符号を付したものは、同一の又はこれに相当するものであり、これは明細書の全文において共通している。なお、各図面では、各構成部材の相対的な寸法関係または形状等が実際のものとは異なる場合がある。 Hereinafter, embodiments of the winding nozzle and winding machine according to the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the following embodiments, and can be variously modified without departing from the gist of the present disclosure. In addition, the present disclosure includes all combinations of configurations that can be combined among the configurations shown in the following embodiments and modifications thereof. Further, in each figure, those having the same reference numerals are the same or equivalent thereof, which are common to the whole text of the specification. In each drawing, the relative dimensional relationship or shape of each component may differ from the actual one.
　実施の形態１．
　図１は、実施の形態１に係る巻線機１００の全体構造を示す模式図である。図２は、電動機等に使用される固定子１０の構造の一例を示す平面図である。図３は、図２に示した固定子１０の側面図である。図３は、固定子１０を構成する１つの鉄心１の側面を示している。巻線機１００は、例えば電動機２０（図４参照）の固定子１０を構成するコイル２を形成するための装置である。巻線機１００は、固定子１０を構成する鉄心１に巻線３を巻き付けることでコイル２を形成する。 Embodiment 1.
FIG. 1 is a schematic view showing the overall structure of the winding machine 100 according to the first embodiment. FIG. 2 is a plan view showing an example of the structure of the stator 10 used in an electric motor or the like. FIG. 3 is a side view of the stator 10 shown in FIG. FIG. 3 shows the side surface of one iron core 1 constituting the stator 10. The winding machine 100 is, for example, a device for forming the coil 2 constituting the stator 10 of the electric motor 20 (see FIG. 4). The winding machine 100 forms the coil 2 by winding the winding 3 around the iron core 1 constituting the stator 10.
　図１に示すように、鉄心１は、ティース１ａとスロット面１ｂとを有している。但し、図１においては、鉄心１は模式的に表してあり、鉄心１は図１に示す形状に限定されるものではない。図２に示されるように、固定子１０は、複数個の鉄心１を円環状に並べて形成される。鉄心１の個数は、任意の個数でよく、電動機２０の仕様及び用途等により適宜決定される。各鉄心１は、図３に示すように、Ｕ側インシュレータ４及びＬ側インシュレータ５を備えている。Ｕ側インシュレータ４及びＬ側インシュレータ５は、鉄心１に一体に成形されるか、又は、別途成形されたものを鉄心１に取り付けて構成される。Ｕ側インシュレータ４及びＬ側インシュレータ５は、絶縁部材から構成されており、絶縁性を有している。Ｕ側インシュレータ４及びＬ側インシュレータ５には、各コイル２間を繋ぐ渡り線３Ａ（図７参照）が固定され、又は、端子（図示せず）等が配置される。 As shown in FIG. 1, the iron core 1 has a teeth 1a and a slot surface 1b. However, in FIG. 1, the iron core 1 is schematically represented, and the iron core 1 is not limited to the shape shown in FIG. As shown in FIG. 2, the stator 10 is formed by arranging a plurality of iron cores 1 in an annular shape. The number of iron cores 1 may be any number, and is appropriately determined depending on the specifications and applications of the motor 20 and the like. As shown in FIG. 3, each iron core 1 includes a U-side insulator 4 and an L-side insulator 5. The U-side insulator 4 and the L-side insulator 5 are integrally molded with the iron core 1, or are configured by attaching a separately molded one to the iron core 1. The U-side insulator 4 and the L-side insulator 5 are composed of insulating members and have insulating properties. A crossover 3A (see FIG. 7) connecting the coils 2 is fixed to the U-side insulator 4 and the L-side insulator 5, or terminals (not shown) or the like are arranged.
　固定子１０は、次のようにして形成される。まず、後述する図５に示すように、鉄心１を直線状に複数接続した状態で、巻線機１００により、各鉄心１のスロット面１ｂに巻線３が巻き付けられて、コイル２が形成される。各鉄心１のスロット面１ｂにコイル２が形成された後に、直線状に接続した複数の鉄心１を円環状にし、複数接続された鉄心１のうち両端に位置する鉄心１同士を溶接等により接合することにより、図２に示す円環状の固定子１０が形成される。 The stator 10 is formed as follows. First, as shown in FIG. 5, which will be described later, in a state where a plurality of iron cores 1 are linearly connected, the winding machine 100 winds the winding wire 3 around the slot surface 1b of each iron core 1 to form the coil 2. To. After the coil 2 is formed on the slot surface 1b of each iron core 1, a plurality of linearly connected iron cores 1 are formed into an annular shape, and among the plurality of connected iron cores 1, the iron cores 1 located at both ends are joined by welding or the like. By doing so, the annular stator 10 shown in FIG. 2 is formed.
　図４は、固定子１０が実装された状態の一例を示す図である。固定子１０は、例えば電動機２０に内蔵される。電動機２０は、固定子１０と回転子１１とから構成されている。固定子１０は、上述したように、複数の鉄心１が円環状に並べられて形成されているため、各鉄心１の内周側には、筒状部が形成されている。回転子１１は、固定子１０の筒状部に配置される。回転子１１は、円柱形状を有し、回転軸１２に固定されている。回転子１１は、回転軸１２が回転されることにより、回転駆動される。図４は、電動機２０が、空調機（図示せず）の室外ユニットなどに用いられる圧縮機２００に搭載された例を示している。電動機２０は、圧縮機２００の筐体２００ａ内に配置されている。筐体２００ａの下部には、圧縮機構２００ｂが設けられている。圧縮機構２００ｂは、圧縮機２００の吸入口２００ｃから吸入された冷媒を圧縮して、圧縮機２００の吐出口２００ｄから圧縮した冷媒を吐出する。圧縮機構２００ｂは、電動機２０により駆動される。電動機２０は、固定子１０に接続された配線からコイル２に電力が供給され、コイル２と鉄心１とにより発生する磁界により回転子１１を回転駆動する。 FIG. 4 is a diagram showing an example of a state in which the stator 10 is mounted. The stator 10 is built in, for example, the electric motor 20. The electric motor 20 is composed of a stator 10 and a rotor 11. As described above, the stator 10 is formed by arranging a plurality of iron cores 1 in an annular shape, so that a tubular portion is formed on the inner peripheral side of each iron core 1. The rotor 11 is arranged in the cylindrical portion of the stator 10. The rotor 11 has a cylindrical shape and is fixed to the rotating shaft 12. The rotor 11 is rotationally driven by the rotation of the rotating shaft 12. FIG. 4 shows an example in which the motor 20 is mounted on a compressor 200 used for an outdoor unit of an air conditioner (not shown). The electric motor 20 is arranged in the housing 200a of the compressor 200. A compression mechanism 200b is provided at the bottom of the housing 200a. The compression mechanism 200b compresses the refrigerant sucked from the suction port 200c of the compressor 200, and discharges the compressed refrigerant from the discharge port 200d of the compressor 200. The compression mechanism 200b is driven by the electric motor 20. In the electric motor 20, electric power is supplied to the coil 2 from the wiring connected to the stator 10, and the rotor 11 is rotationally driven by the magnetic field generated by the coil 2 and the iron core 1.
　図１に示すように、巻線機１００は、巻線ノズル５０が取り付けられたノズル保持部６１と、ノズル保持部６１を水平方向に移動させる駆動ユニット６０と、巻線３を案内する１対の滑車６２とを備えている。さらに、巻線機１００は、巻線３の張力を調整するテンショナ部６３と、巻線３が蓄えられている巻線ボビン６４とを備えている。 As shown in FIG. 1, the winding machine 100 includes a nozzle holding portion 61 to which a winding nozzle 50 is attached, a drive unit 60 that moves the nozzle holding portion 61 in the horizontal direction, and a pair that guides the winding 3. It is equipped with a pulley 62. Further, the winding machine 100 includes a tensioner portion 63 for adjusting the tension of the winding 3, and a winding bobbin 64 in which the winding 3 is stored.
　ノズル保持部６１は、駆動ユニット６０により、矢印９０で模式的に示されるように、図１のＸ方向及びＺ方向に水平移動する。Ｘ方向は紙面の左右方向に対応した幅方向であり、Ｚ方向は、Ｘ方向に直交する奥行き方向である。Ｙ方向は、Ｘ方向及びＺ方向に直交する垂直方向である。Ｘ方向及びＺ方向は例えば水平方向であり、Ｙ方向は例えば鉛直方向である。 The nozzle holding portion 61 is horizontally moved by the drive unit 60 in the X and Z directions of FIG. 1, as schematically indicated by the arrow 90. The X direction is the width direction corresponding to the left-right direction of the paper surface, and the Z direction is the depth direction orthogonal to the X direction. The Y direction is a vertical direction orthogonal to the X direction and the Z direction. The X and Z directions are, for example, the horizontal direction, and the Y direction is, for example, the vertical direction.
　巻線３は、巻線ボビン６４から引き出され、テンショナ部６３を通って、１対の滑車６２により案内され、ノズル保持部６１内を通される。ノズル保持部６１を通った巻線３は、ノズル保持部６１によって保持されている巻線ノズル５０を通って、巻線ノズル５０の先端部から引き出される。巻線３の先端は、鉄心１に固定されており、巻線３は、ティース１ａのスロット面１ｂに巻き付けられる。また、巻線機１００は、制御装置８０を備え、制御装置８０は、少なくとも、駆動ユニット６０、テンショナ部６３、及び、巻線ノズル５０を自転させる機構を制御する。 The winding 3 is pulled out from the winding bobbin 64, is guided by a pair of pulleys 62 through the tensioner portion 63, and is passed through the nozzle holding portion 61. The winding 3 that has passed through the nozzle holding portion 61 is drawn out from the tip end portion of the winding nozzle 50 through the winding nozzle 50 held by the nozzle holding portion 61. The tip of the winding 3 is fixed to the iron core 1, and the winding 3 is wound around the slot surface 1b of the teeth 1a. Further, the winding machine 100 includes a control device 80, and the control device 80 controls at least a mechanism for rotating the drive unit 60, the tensioner unit 63, and the winding nozzle 50.
　ここで、制御装置８０のハードウェア構成について説明する。制御装置８０は処理回路から構成される。処理回路は、専用のハードウェア、または、プロセッサから構成される。専用のハードウェアは、例えば、ＡＳＩＣ（Application Specific Integrated Circuit）またはＦＰＧＡ（Field Programmable Gate Array）などである。プロセッサは、メモリに記憶されるプログラムを実行する。制御装置８０は、記憶部（図示せず）を有している。記憶部はメモリから構成される。メモリは、ＲＡＭ（Random Access Memory）、ＲＯＭ（Read Only Memory）、フラッシュメモリ、ＥＰＲＯＭ（Erasable Programmable ROM）などの不揮発性または揮発性の半導体メモリ、もしくは、磁気ディスク、フレキシブルディスク、光ディスクなどのディスクである。 Here, the hardware configuration of the control device 80 will be described. The control device 80 is composed of a processing circuit. The processing circuit is composed of dedicated hardware or a processor. The dedicated hardware is, for example, an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The processor executes a program stored in memory. The control device 80 has a storage unit (not shown). The storage unit is composed of a memory. The memory is a non-volatile or volatile semiconductor memory such as RAM (RandomAccessMemory), ROM (ReadOnlyMemory), flash memory, EPROM (ErasableProgrammableROM), or a disk such as a magnetic disk, flexible disk, or optical disk. be.
　図５は、実施の形態１に係る巻線機１００により鉄心１にコイル２を形成する際の巻線ノズル５０を示す斜視図である。図６は、図５の平面図である。実施の形態１においては、図５及び図６に示すように、固定子１０の各鉄心１が直線状に並ぶように固定子１０を展開した状態で、巻線３が各鉄心１に巻き付けられてコイル２が形成される。巻線ノズル５０は、図５に示すように、円柱形状を有し、内部に巻線３が通る巻線通し部５１が設けられている。実施の形態１においては、巻線機１００に、３つの巻線ノズル５０が設けられている。巻線機１００は、図６に示すように、３つの巻線ノズル５０を同時に動かして、右から１番目から３番目までの３つの鉄心１のティース１ａのスロット面１ｂに同時に巻線３を巻き付ける。巻線ノズル５０は、図５に示すように、巻線３が通される方向、つまり巻線ノズル５０の軸方向を、固定子１０を展開した面に対して直交させるように配置される。巻線ノズル５０は、図６に示される軌跡ｔに沿って移動する。つまり、巻線ノズル５０は、ティース１ａの周りを略矩形を描くように移動し、ティース１ａに巻線３を巻き付ける。また、巻線ノズル５０は、図６の自転方向ｒの向きに、巻線ノズル５０の中心軸Ａを軸として自転可能に設置されている。なお、図６に示された軌跡ｔは、一例であり、その他の形状を描くようにティース１ａの周りを巻線ノズル５０が移動してもよい。また、自転方向ｒは、図６では反時計回りの例が示されているが、逆向き（すなわち、時計回り）であっても良い。 FIG. 5 is a perspective view showing a winding nozzle 50 when the coil 2 is formed on the iron core 1 by the winding machine 100 according to the first embodiment. FIG. 6 is a plan view of FIG. In the first embodiment, as shown in FIGS. 5 and 6, the winding 3 is wound around each core 1 in a state where the stator 10 is unfolded so that the cores 1 of the stator 10 are arranged in a straight line. The coil 2 is formed. As shown in FIG. 5, the winding nozzle 50 has a cylindrical shape, and is provided with a winding through portion 51 through which the winding 3 passes. In the first embodiment, the winding machine 100 is provided with three winding nozzles 50. As shown in FIG. 6, the winding machine 100 simultaneously moves the three winding nozzles 50 to simultaneously wind the winding 3 on the slot surface 1b of the teeth 1a of the three iron cores 1 from the first to the third from the right. Wrap it. As shown in FIG. 5, the winding nozzle 50 is arranged so that the direction in which the winding 3 is passed, that is, the axial direction of the winding nozzle 50 is orthogonal to the plane on which the stator 10 is developed. The winding nozzle 50 moves along the locus t shown in FIG. That is, the winding nozzle 50 moves around the teeth 1a so as to draw a substantially rectangular shape, and winds the winding 3 around the teeth 1a. Further, the winding nozzle 50 is installed so as to be rotatable about the central axis A of the winding nozzle 50 in the direction of the rotation direction r in FIG. The locus t shown in FIG. 6 is an example, and the winding nozzle 50 may move around the teeth 1a so as to draw another shape. Further, although the example of the counterclockwise direction is shown in FIG. 6, the rotation direction r may be in the opposite direction (that is, clockwise).
　図７は、実施の形態１に係る巻線機１００により鉄心１に渡り線３Ａを渡す際の巻線ノズル５０の動きを示す平面図である。図５及び図６を用いて説明したように、実施の形態１では、巻線機１００が、３つの鉄心１のティース１ａに同時に巻線３を巻き付ける。すなわち、実施の形態１では、まず、図６に示すように、右から１番目から３番目までの３つの鉄心１のティース１ａに同時に巻線３が巻き付けてコイル２を形成する。次に、図７に示すように、３つの巻線ノズル５０の位置を移動させて、右から４番目から６番目までの３つの鉄心１のティース１ａに同時に巻線３が巻き付けてコイル２を形成する。このように、巻線機１００は、３つの鉄心１を１つのグループにして、図７の矢印Ｄ１の方向に、グループごとにコイル２を順に形成していく。このとき、１つのグループのコイル２が形成されて、次のグループのコイル２の形成に移行する際に、巻線３を切らずに、グループ間に渡り線３Ａを渡して、次のグループのティース１ａに巻線３を巻き付ける。このように、渡り線３Ａとは、隣接する２つのグループのそれぞれに含まれるティース１ａ間に渡される巻線３のことである。図７の例では、右から１番目の鉄心１のティース１ａから、右から４番目の鉄心１のティース１ａに、渡り線３Ａが渡されている。同様に、右から２番目の鉄心１のティース１ａから、右から５番目の鉄心１のティース１ａに、渡り線３Ａが渡され、右から３番目の鉄心１のティース１ａから、右から６番目の鉄心１のティース１ａに、渡り線３Ａが渡されている。 FIG. 7 is a plan view showing the movement of the winding nozzle 50 when passing the crossover 3A to the iron core 1 by the winding machine 100 according to the first embodiment. As described with reference to FIGS. 5 and 6, in the first embodiment, the winding machine 100 winds the winding 3 around the teeth 1a of the three iron cores 1 at the same time. That is, in the first embodiment, first, as shown in FIG. 6, the winding 3 is simultaneously wound around the teeth 1a of the three iron cores 1 from the first to the third from the right to form the coil 2. Next, as shown in FIG. 7, the positions of the three winding nozzles 50 are moved, and the winding 3 is simultaneously wound around the teeth 1a of the three iron cores 1 from the fourth to the sixth from the right to wind the coil 2. Form. In this way, the winding machine 100 groups the three iron cores 1 into one group, and forms the coils 2 in order for each group in the direction of the arrow D1 in FIG. 7. At this time, when the coil 2 of one group is formed and the process shifts to the formation of the coil 2 of the next group, the crossover 3A is passed between the groups without cutting the winding 3, and the coil 2 of the next group is formed. Wind the winding 3 around the teeth 1a. As described above, the crossover 3A is the winding 3 passed between the teeth 1a included in each of the two adjacent groups. In the example of FIG. 7, the crossover 3A is passed from the teeth 1a of the first iron core 1 from the right to the teeth 1a of the fourth iron core 1 from the right. Similarly, the crossover 3A is passed from the teeth 1a of the second iron core 1 from the right to the teeth 1a of the fifth iron core 1 from the right, and the sixth from the teeth 1a of the third iron core 1 from the right. A crossover 3A is passed to the teeth 1a of the iron core 1 of the above.
　図８及び図９は、実施の形態１に係る巻線機１００の巻線ノズル５０の斜視図である。図１０は、実施の形態１に係る巻線機１００の巻線ノズル５０の先端面５６を示す部分拡大斜視図である。図１０は、図８及び図９の下側から先端面５６を見た状態を示している。図１０では、説明のため、図８及び図９に示す先端開放部７０を破線で示している。図１１は、実施の形態１に係る巻線機１００の巻線ノズル５０の構成を示す（ａ）断面図及び（ｂ）側面図である。図１１（ｂ）は、先端面５６を示している。以下、図８～図１１を用いて、巻線ノズル５０の構成について説明する。 8 and 9 are perspective views of the winding nozzle 50 of the winding machine 100 according to the first embodiment. FIG. 10 is a partially enlarged perspective view showing the tip surface 56 of the winding nozzle 50 of the winding machine 100 according to the first embodiment. FIG. 10 shows a state in which the tip surface 56 is viewed from the lower side of FIGS. 8 and 9. In FIG. 10, for the sake of explanation, the tip opening portion 70 shown in FIGS. 8 and 9 is shown by a broken line. FIG. 11 is a cross-sectional view (a) and a side view (b) showing the configuration of the winding nozzle 50 of the winding machine 100 according to the first embodiment. FIG. 11B shows the tip surface 56. Hereinafter, the configuration of the winding nozzle 50 will be described with reference to FIGS. 8 to 11.
　図８～図１１に示すように、実施の形態１において、巻線ノズル５０は、円柱形状を有している。巻線ノズル５０には、図１１（ａ）に示すように、巻線３を通すための巻線通し部５１が設けられている。巻線通し部５１は、貫通孔形状を有する貫通孔部７１と、外部に対して開口して開放状態に形成された先端開放部７０とから構成されている。 As shown in FIGS. 8 to 11, in the first embodiment, the winding nozzle 50 has a cylindrical shape. As shown in FIG. 11A, the winding nozzle 50 is provided with a winding threading portion 51 for passing the winding 3. The winding through portion 51 is composed of a through hole portion 71 having a through hole shape and a tip open portion 70 formed in an open state by opening to the outside.
　巻線ノズル５０の一端は、図１に示した巻線機１００のノズル保持部６１に固定される固定側端面５５（第１端面）である。巻線３は、固定側端面５５に設けられた巻線挿入口５５ａから巻線通し部５１内に挿入される。また、巻線ノズル５０の他端は、先端面５６（第２端面）である。巻線通し部５１を通った巻線３は、先端面５６の巻線供給部５６ａから引き出されてティース１ａへの巻線動作に使用される。なお、巻線ノズル５０の形状は、円柱形状だけに限定されるものではなく、固定側端面５５から先端面５６に亘って巻線３が通される構造であれば、その他の形状を取っても良い。すなわち、巻線ノズル５０は、例えば、楕円形を底面とする楕円柱形状、又は、多角形を底面とする多角柱形状などであってもよい。 One end of the winding nozzle 50 is a fixed side end surface 55 (first end surface) fixed to the nozzle holding portion 61 of the winding machine 100 shown in FIG. The winding 3 is inserted into the winding through portion 51 from the winding insertion port 55a provided on the fixed side end surface 55. The other end of the winding nozzle 50 is a tip surface 56 (second end surface). The winding 3 that has passed through the winding through portion 51 is pulled out from the winding supply portion 56a of the tip surface 56 and used for winding operation to the teeth 1a. The shape of the winding nozzle 50 is not limited to the cylindrical shape, and any other shape may be taken as long as the winding 3 is passed from the fixed side end surface 55 to the tip surface 56. Is also good. That is, the winding nozzle 50 may have, for example, an elliptical column shape having an elliptical bottom surface, or a polygonal column shape having a polygonal bottom surface.
　図１に示した巻線機１００は、巻線ノズル５０の固定側端面５５をノズル保持部６１で保持して固定する。また、巻線機１００は、巻線ノズル５０の固定側端面５５から先端面５６に亘って巻線通し部５１内に巻線３を通し、巻線ノズル５０の先端面５６の巻線供給部５６ａから巻線３を引き出す。そして、巻線機１００は、図６に示したように、巻線ノズル５０を鉄心１のティース１ａの周りで移動させることにより、先端面５６の巻線供給部５６ａから引き出された巻線３をティース１ａに巻き付ける。 In the winding machine 100 shown in FIG. 1, the fixed side end surface 55 of the winding nozzle 50 is held and fixed by the nozzle holding portion 61. Further, the winding machine 100 passes the winding 3 through the winding through portion 51 from the fixed side end surface 55 of the winding nozzle 50 to the tip surface 56, and the winding supply portion of the tip surface 56 of the winding nozzle 50. Pull out the winding 3 from 56a. Then, as shown in FIG. 6, the winding machine 100 moves the winding nozzle 50 around the teeth 1a of the iron core 1, so that the winding 3 is drawn out from the winding supply portion 56a of the tip surface 56. Wrap around the teeth 1a.
　巻線ノズル５０には、図１１（ａ）に示すように、円柱形状の長手方向に延びた巻線通し部５１が設けられている。巻線通し部５１は、固定側端面５５から先端面５６にわたって巻線３が通るように、固定側端面５５から先端面５６まで巻線ノズル５０の長手方向（軸方向）に向かって延びている。巻線通し部５１は、貫通孔形状を有する貫通孔部７１と、開放状態に形成された先端開放部７０とを有している。貫通孔部７１は、固定側端面５５に設けられた巻線挿入口５５ａから、巻線ノズル５０の側面５０ａに形成された先端開放部７０までを貫通する貫通孔で構成されている。 As shown in FIG. 11A, the winding nozzle 50 is provided with a winding through portion 51 extending in the longitudinal direction of a cylindrical shape. The winding threading portion 51 extends from the fixed side end surface 55 to the tip surface 56 in the longitudinal direction (axial direction) of the winding nozzle 50 so that the winding 3 passes from the fixed side end surface 55 to the tip surface 56. .. The winding through portion 51 has a through hole portion 71 having a through hole shape and a tip open portion 70 formed in an open state. The through hole portion 71 is composed of a through hole that penetrates from the winding insertion port 55a provided on the fixed side end surface 55 to the tip opening portion 70 formed on the side surface 50a of the winding nozzle 50.
　固定側端面５５に設けられた巻線挿入口５５ａは、図８及び図１１（ａ）に示すように、固定側端面５５の中心部分に配置されている。すなわち、巻線挿入口５５ａは、図１１（ａ）に示すように、巻線ノズル５０の固定側端面５５において、巻線ノズル５０の中心軸Ａ上に設けられている。なお、巻線挿入口５５ａは、必ずしも、巻線ノズル５０の中心軸Ａ上に配置されていなくてもよい。すなわち、巻線挿入口５５ａは、巻線ノズル５０の中心軸Ａから多少シフトされていてもよい。但し、その場合には、巻線通し部５１の内壁面５１ａが薄肉とならない程度に、巻線挿入口５５ａを巻線ノズル５０の中心軸Ａからシフトさせる。 The winding insertion port 55a provided on the fixed side end surface 55 is arranged at the central portion of the fixed side end surface 55 as shown in FIGS. 8 and 11 (a). That is, as shown in FIG. 11A, the winding insertion port 55a is provided on the central axis A of the winding nozzle 50 at the fixed side end surface 55 of the winding nozzle 50. The winding insertion port 55a does not necessarily have to be arranged on the central axis A of the winding nozzle 50. That is, the winding insertion port 55a may be slightly shifted from the central axis A of the winding nozzle 50. However, in that case, the winding insertion port 55a is shifted from the central axis A of the winding nozzle 50 so that the inner wall surface 51a of the winding through portion 51 does not become thin.
　以下では、説明のため、巻線ノズル５０本体の外周を構成する側面５０ａのうち、図１１（ａ）における上側の側面部分を「側面５０ａ－１」と呼び、下側の側面部分を「側面５０ａ－２」と呼ぶこととする。 In the following, for the sake of explanation, of the side surfaces 50a constituting the outer periphery of the winding nozzle 50 main body, the upper side surface portion in FIG. 11A is referred to as “side surface 50a-1”, and the lower side surface portion is referred to as “side surface”. It will be called "50a-2".
　巻線通し部５１の貫通孔部７１は、図１１（ａ）に示すように、巻線ノズル５０の中心軸Ａに対して傾斜して設けられている。さらに詳細に言えば、巻線通し部５１の内壁面５１ａの長手方向は、巻線ノズル５０の中心軸Ａに対して、角度αだけ傾斜している。 As shown in FIG. 11A, the through hole portion 71 of the winding through portion 51 is provided so as to be inclined with respect to the central axis A of the winding nozzle 50. More specifically, the longitudinal direction of the inner wall surface 51a of the winding threading portion 51 is inclined by an angle α with respect to the central axis A of the winding nozzle 50.
　巻線通し部５１の貫通孔部７１は、巻線挿入口５５ａから先端開放部７０まで延設されている。貫通孔部７１は、内壁面５１ａを有している。一方、先端開放部７０は、図１１（ａ）に示すように、巻線ノズル５０の側面５０ａ－２に形成されている。先端開放部７０は、図８及び図９に示すように、矩形形状の開口部７０ａを有している。このように、巻線通し部５１の先端面５６側の端部は、先端開放部７０になっている。先端開放部７０は、巻線通し部５１の内壁面５１ａが設けられておらず、外部に対して開放された状態となっている。 The through hole 71 of the winding threading portion 51 extends from the winding insertion port 55a to the tip opening portion 70. The through hole portion 71 has an inner wall surface 51a. On the other hand, the tip opening portion 70 is formed on the side surface 50a-2 of the winding nozzle 50 as shown in FIG. 11A. As shown in FIGS. 8 and 9, the tip opening portion 70 has a rectangular opening portion 70a. As described above, the end portion of the winding threading portion 51 on the tip end surface 56 side is the tip opening portion 70. The tip opening portion 70 is not provided with the inner wall surface 51a of the winding through portion 51, and is in a state of being open to the outside.
　巻線ノズル５０の先端面５６には、図１１（ａ）に示すように、巻線供給部５６ａが設けられている。巻線供給部５６ａは、溝状に形成された先端溝部５２と、巻線供給口５３とを有している。先端溝部５２は、先端面５６に形成された溝である。先端溝部５２は、側面５０ａ－２（第１側面）から側面５０ａ－１（第２側面）に向かって、巻線ノズル５０の径方向に沿って延設されている。従って、先端溝部５２の延設方向は、図１１（ｂ）の矢印Ｄ２の方向である。すなわち、図１１（ｂ）の紙面において、下から上に向かう方向である。先端溝部５２の延設方向は、巻線ノズル５０の中心軸Ａに対して直交している。また、先端溝部５２の延設方向の両端は、巻線ノズル５０本体の側面５０ａ－１及び５０ａ－２において開口している。先端溝部５２の側面５０ａ－１側の端部は、巻線３が引き出される巻線供給口５３になっている。なお、上述したように、巻線通し部５１は、巻線ノズル５０の中心軸Ａに対して傾斜している。巻線通し部５１の傾斜する方向は、図１１（ａ）の矢印Ｄ３の方向である。すなわち、図１１（ｂ）の紙面において、上から下に向かう方向である。すなわち、巻線通し部５１は、側面５０ａ－１（第２側面）から側面５０ａ－２（第１側面）に向かう方向に傾斜している。このように、巻線通し部５１は、先端溝部５２の延設方向と反対方向に傾斜している。 As shown in FIG. 11A, a winding supply portion 56a is provided on the tip surface 56 of the winding nozzle 50. The winding supply portion 56a has a groove-shaped tip groove portion 52 and a winding supply port 53. The tip groove portion 52 is a groove formed on the tip surface 56. The tip groove portion 52 extends from the side surface 50a-2 (first side surface) toward the side surface 50a-1 (second side surface) along the radial direction of the winding nozzle 50. Therefore, the extending direction of the tip groove portion 52 is the direction of the arrow D2 in FIG. 11 (b). That is, in the paper surface of FIG. 11B, the direction is from bottom to top. The extending direction of the tip groove portion 52 is orthogonal to the central axis A of the winding nozzle 50. Further, both ends of the tip groove portion 52 in the extending direction are opened on the side surfaces 50a-1 and 50a-2 of the winding nozzle 50 main body. The end of the tip groove 52 on the side surface 50a-1 side is a winding supply port 53 from which the winding 3 is pulled out. As described above, the winding threading portion 51 is inclined with respect to the central axis A of the winding nozzle 50. The direction in which the winding threading portion 51 is inclined is the direction of arrow D3 in FIG. 11 (a). That is, in the paper surface of FIG. 11B, the direction is from top to bottom. That is, the winding threading portion 51 is inclined in the direction from the side surface 50a-1 (second side surface) to the side surface 50a-2 (first side surface). In this way, the winding threading portion 51 is inclined in the direction opposite to the extending direction of the tip groove portion 52.
　巻線通し部５１と先端溝部５２とは、互いに連通している。つまり、巻線通し部５１と先端溝部５２とは接続されて１本の巻線３の通り道となるように形成されている。図１１（ａ）に示すように、巻線通し部５１の内壁面５１ａと先端溝部５２の内壁面５２ａとが交わる部分である第１交差部５７は、曲面から形成されており、内壁面５１ａと内壁面５２ａとを連続した面となるように接続している。実施の形態１において、第１交差部５７は、図１１（ａ）に示す断面において円弧形状になっているが、その他の曲線形状であっても良く、巻線３が接触したときに切断が生じないように滑らかな曲線で構成されることが望ましい。 The winding threading portion 51 and the tip groove portion 52 communicate with each other. That is, the winding through portion 51 and the tip groove portion 52 are connected and formed so as to form a path for one winding 3. As shown in FIG. 11A, the first intersection 57, which is a portion where the inner wall surface 51a of the winding through portion 51 and the inner wall surface 52a of the tip groove portion 52 intersect, is formed from a curved surface, and the inner wall surface 51a is formed. And the inner wall surface 52a are connected so as to be a continuous surface. In the first embodiment, the first intersection 57 has an arc shape in the cross section shown in FIG. 11 (a), but may have another curved shape, and is cut when the windings 3 come into contact with each other. It is desirable to have a smooth curve so that it does not occur.
　また、図１１（ｂ）に示すように、先端溝部５２の内壁面５２ａと巻線ノズル５０の側面５０ａ－１とが交わる部分である第２交差部５８は、曲面から形成されており、内壁面５２ａと側面５０ａ－１とが連続した面となるように接続している。つまり、内壁面５２ａと側面５０ａ－１とが交わって出来る稜線は、全て曲面で形成されている。実施の形態１において、第２交差部５８は、図１１（ｂ）において円弧形状になっているが、その他の曲線形状であっても良く、巻線３が接触したときに切断が生じないように滑らかな曲線で構成されることが望ましい。 Further, as shown in FIG. 11B, the second intersection 58, which is a portion where the inner wall surface 52a of the tip groove 52 and the side surface 50a-1 of the winding nozzle 50 intersect, is formed from a curved surface and has an inner surface. The wall surface 52a and the side surface 50a-1 are connected so as to form a continuous surface. That is, all the ridge lines formed by the intersection of the inner wall surface 52a and the side surface 50a-1 are formed of curved surfaces. In the first embodiment, the second intersection 58 has an arc shape in FIG. 11 (b), but may have another curved shape so that cutting does not occur when the windings 3 come into contact with each other. It is desirable to have a smooth curve.
　なお、図１１（ａ）において、長さｓは、第１交差部５７から先端溝部５２の巻線供給口５３までの長さである。この長さｓの部分を、以下では、部分Ｓと呼ぶ。部分Ｓの長さｓが長いほど、巻線３は第１交差部５７に沿って緩やかに曲がることができる。逆に、部分Ｓの長さｓが短いほど、巻線３は第１交差部５７に沿って急カーブで曲がることになる。この原理については、図１９を用いて後述する。そのため、実施の形態１では、長さｓを巻線ノズル５０の径に対して出来るだけ長くするために、巻線通し部５１の貫通孔部７１を傾斜させ、且つ、巻線通し部５１の先端に先端開放部７０を設けている。先端開放部７０は、巻線ノズル５０の側面５０ａ－２で開口している。当該構成により、長さｓは、巻線ノズル５０の径に対して最大限長くなっている。 In FIG. 11A, the length s is the length from the first intersection 57 to the winding supply port 53 of the tip groove 52. The portion of this length s is hereinafter referred to as a portion S. The longer the length s of the portion S, the more gently the winding 3 can bend along the first intersection 57. Conversely, the shorter the length s of the portion S, the sharper the winding 3 will bend along the first intersection 57. This principle will be described later with reference to FIG. Therefore, in the first embodiment, in order to make the length s as long as possible with respect to the diameter of the winding nozzle 50, the through hole portion 71 of the winding through portion 51 is inclined and the winding through portion 51 is provided. A tip opening portion 70 is provided at the tip. The tip opening portion 70 is opened at the side surface 50a-2 of the winding nozzle 50. With this configuration, the length s is as long as possible with respect to the diameter of the winding nozzle 50.
　また、図１１（ａ）に示されるように、巻線通し部５１の内壁面５１ａと固定側端面５５とが交わる第３交差部５９は、曲面から形成されており、内壁面５１ａと固定側端面５５とが連続した面となるように接続している。第３交差部５９は、図１１（ａ）の断面において円弧形状になっているが、その他の曲線形状であっても良く、巻線３が接触したときに切断が生じないように滑らかな曲線で構成されることが望ましい。 Further, as shown in FIG. 11A, the third intersection 59 where the inner wall surface 51a of the winding threading portion 51 and the fixed side end surface 55 intersect is formed from a curved surface, and the inner wall surface 51a and the fixed side are formed. It is connected so that the end surface 55 and the end surface 55 are continuous surfaces. The third intersection 59 has an arc shape in the cross section of FIG. 11A, but may have another curved shape, and is a smooth curve so that cutting does not occur when the windings 3 come into contact with each other. It is desirable to be composed of.
　図１２及び図１３は、実施の形態１に係る巻線機１００の巻線ノズル５０に巻線３を通した状態を示す説明図である。図１４は、実施の形態１に係る巻線機１００において鉄心１のティース１ａに巻線３を巻き付けている状態の模式図である。図１２に示されるように、巻線ノズル５０は、固定側端面５５から先端面５６わたって巻線３が通るように形成された巻線通し部５１と、先端面５６に溝状に形成された先端溝部５２と、を備えている。巻線３は、巻線機１００の各部を通して巻線ノズル５０の固定側端面５５から、巻線通し部５１に入り、巻線通し部５１に沿って、先端面５６に至る。 12 and 13 are explanatory views showing a state in which the winding 3 is passed through the winding nozzle 50 of the winding machine 100 according to the first embodiment. FIG. 14 is a schematic view of a winding machine 100 according to the first embodiment in a state where the winding 3 is wound around the teeth 1a of the iron core 1. As shown in FIG. 12, the winding nozzle 50 is formed in a groove shape on the winding through portion 51 formed so that the winding 3 passes from the fixed side end surface 55 to the tip surface 56 and the tip surface 56. The tip groove portion 52 is provided. The winding 3 enters the winding through portion 51 from the fixed side end surface 55 of the winding nozzle 50 through each portion of the winding machine 100, and reaches the tip surface 56 along the winding through portion 51.
　先端面５６に至った巻線３は、図１２に示すように、巻線ノズル５０の巻線通し部５１と先端溝部５２との交わった部分である第１交差部５７の曲面に沿って、巻線ノズル５０の側面５０ａ－１側に曲げられる。側面５０ａ－１は、先端開放部７０が形成されている側面５０ａ－２に対して反対側の面である。すなわち、側面５０ａ－１と側面５０ａ－２とは対向して配置されている。第１交差部５７において、巻線通し部５１の内壁面５１ａと先端溝部５２の内壁面５２ａとが成す角度は、角度βである。角度βは、９０°より小さい鋭角である。従って、第１交差部５７において、巻線３は角度βだけ曲げられる。 As shown in FIG. 12, the winding wire 3 reaching the tip surface 56 is formed along the curved surface of the first intersection 57, which is the intersection of the winding threading portion 51 and the tip groove portion 52 of the winding nozzle 50. It is bent toward the side surface 50a-1 of the winding nozzle 50. The side surface 50a-1 is a surface opposite to the side surface 50a-2 in which the tip opening portion 70 is formed. That is, the side surface 50a-1 and the side surface 50a-2 are arranged so as to face each other. At the first intersection 57, the angle formed by the inner wall surface 51a of the winding threading portion 51 and the inner wall surface 52a of the tip groove portion 52 is an angle β. The angle β is an acute angle smaller than 90 °. Therefore, at the first intersection 57, the winding 3 is bent by an angle β.
　第１交差部５７の曲面に沿って側面５０ａ－１側に向かって角度βだけ曲げられた巻線３は、図１３に示すように、先端溝部５２に沿って進む。その後、先端溝部５２と巻線ノズル５０の側面５０ａとが交わった部分である第２交差部５８の曲面に沿って、巻線ノズル５０の長手方向及び先端溝部５２の延設方向に対し交差する方向に引き出される。先端溝部５２の内壁面５２ａと、第２交差部５８の曲面の接線とが成す角度は、角度γである。角度γは、例えば９０°より大きい鈍角である。従って、第２交差部５８において、巻線３は角度γだけ曲げられる。なお、角度γの大きさは特に限定されない。すなわち、角度γは、９０°でもよく、あるいは、９０°未満でもよい。 As shown in FIG. 13, the winding wire 3 bent by an angle β toward the side surface 50a-1 side along the curved surface of the first intersection 57 advances along the tip groove portion 52. After that, it intersects the longitudinal direction of the winding nozzle 50 and the extending direction of the tip groove 52 along the curved surface of the second intersection 58, which is the intersection of the tip groove 52 and the side surface 50a of the winding nozzle 50. Pulled out in the direction. The angle formed by the inner wall surface 52a of the tip groove portion 52 and the tangent line of the curved surface of the second intersection 58 is an angle γ. The angle γ is, for example, an obtuse angle larger than 90 °. Therefore, at the second intersection 58, the winding 3 is bent by an angle γ. The size of the angle γ is not particularly limited. That is, the angle γ may be 90 ° or less than 90 °.
　実施の形態１では、巻線通し部５１を、巻線ノズル５０の中心軸Ａに対して傾斜させて配置している。これにより、巻線通し部５１を傾斜させない場合と比較して、第１交差部５７のＲ曲面形状が大きくなり、Ｒ曲面の半径Ｒが大きくなる。実施の形態１は、第１交差部５７の半径Ｒ又は曲率が、巻線ノズル５０の直径に対して最大限大きくできる構造である。このように、第１交差部５７のＲ曲面形状が大きくなると、巻線３に無理な力が加わらず、巻線３の引っ張り負荷が小さくなるので、巻線３の伸び率が上昇することを防止することができる。 In the first embodiment, the winding threading portion 51 is arranged so as to be inclined with respect to the central axis A of the winding nozzle 50. As a result, the shape of the R curved surface of the first intersection 57 becomes larger and the radius R of the R curved surface becomes larger than in the case where the winding threading portion 51 is not tilted. The first embodiment has a structure in which the radius R or the curvature of the first intersection 57 can be made as large as possible with respect to the diameter of the winding nozzle 50. In this way, when the R curved surface shape of the first intersection 57 becomes large, an unreasonable force is not applied to the winding 3, and the tensile load of the winding 3 becomes small, so that the elongation rate of the winding 3 increases. Can be prevented.
　さらに、実施の形態１では、巻線通し部５１の先端面５６側の端部に、巻線ノズル５０本体の側面５０ａ－２で開口している先端開放部７０を設けている。先端開放部７０は、内壁面５１ａを有しておらず、外部に対して開放状態である。そのため、先端開放部７０を通る巻線３の動きは、内壁面５１ａによって抑制されない。その結果、先端開放部７０を通る巻線３には、無理な力が一切加わることがなく、巻線３が強く引っ張られないため、巻線３の伸び率の上昇をさらに防止することができる。 Further, in the first embodiment, the tip opening portion 70 opened by the side surface 50a-2 of the winding nozzle 50 main body is provided at the end of the winding threading portion 51 on the tip surface 56 side. The tip opening portion 70 does not have an inner wall surface 51a and is in an open state to the outside. Therefore, the movement of the winding wire 3 passing through the tip opening portion 70 is not suppressed by the inner wall surface 51a. As a result, no unreasonable force is applied to the winding 3 passing through the tip opening portion 70, and the winding 3 is not strongly pulled, so that it is possible to further prevent an increase in the elongation rate of the winding 3. ..
　図１４に示されるように、巻線ノズル５０は、ティース１ａの周囲を周回し、巻線３をスロット面１ｂに巻き付ける。ここで、巻線３のうち、スロット面１ｂに巻き付けられている部分を巻き付け部３ａと呼び、巻き付け部３ａから先端溝部５２までの間に位置する部分を巻線引き出し部３ｂと呼ぶ。このとき、先端溝部５２の矢印Ｄ２で示される延設方向は、巻線３の巻線引き出し部３ｂに対し、角度θを成すように向けられている。そのため、巻線３は、先端溝部５２から引き出される部分で第２交差部５８に沿って曲げられる。 As shown in FIG. 14, the winding nozzle 50 orbits around the teeth 1a and winds the winding 3 around the slot surface 1b. Here, of the winding 3, the portion wound around the slot surface 1b is referred to as a winding portion 3a, and the portion located between the winding portion 3a and the tip groove portion 52 is referred to as a winding drawing portion 3b. At this time, the extending direction indicated by the arrow D2 of the tip groove portion 52 is directed so as to form an angle θ with respect to the winding drawing portion 3b of the winding 3. Therefore, the winding 3 is bent along the second intersection 58 at the portion drawn out from the tip groove portion 52.
　巻線３は、巻線ノズル５０の先端溝部５２の巻線供給口５３で、第２交差部５８の曲面に押し付けられながら引き出される。これにより、巻線３は、第２交差部５８の曲面により、ティース１ａのスロット面１ｂに対して反りが生じる。つまり、巻線引き出し部３ｂは、スロット面１ｂに向かって凸になるように反りが生じている。巻線ノズル５０は、先端溝部５２と巻線引き出し部３ｂとの間の角度θを一定に維持したまま、ティース１ａの周りを周回することが望ましい。そのため、制御装置８０は、角度θが一定の値になるように、巻線ノズル５０の水平方向位置及び自転角度を制御する。これにより、巻線ノズル５０は、水平方向位置が変動するとともに、自転角度を角度θが一定となるように制御装置８０により制御される。そのため、巻線３は、ティース１ａに巻き付けられている間に常にスロット面１ｂに対して反るように力を受けながら巻き付けられている。 The winding 3 is drawn out while being pressed against the curved surface of the second intersection 58 at the winding supply port 53 of the tip groove portion 52 of the winding nozzle 50. As a result, the winding 3 is warped with respect to the slot surface 1b of the teeth 1a due to the curved surface of the second intersection 58. That is, the winding lead-out portion 3b is warped so as to be convex toward the slot surface 1b. It is desirable that the winding nozzle 50 orbits around the teeth 1a while maintaining a constant angle θ between the tip groove portion 52 and the winding drawing portion 3b. Therefore, the control device 80 controls the horizontal position and the rotation angle of the winding nozzle 50 so that the angle θ becomes a constant value. As a result, the winding nozzle 50 is controlled by the control device 80 so that the horizontal position fluctuates and the rotation angle becomes constant. Therefore, the winding 3 is wound while being wound around the teeth 1a while receiving a force so as to always warp with respect to the slot surface 1b.
　図１５は、実施の形態１に係る巻線機１００によりコイル２が形成された鉄心１の断面構造の説明図である。図１５において、矢印８０は例えば図１のＸ方向を示し、矢印８１は例えば図１のＹ方向を示す。図１５に示された断面は、固定子１０の鉄心１のうちの１つを、図２に示される図と平行な面で切断した場合の断面を示している。図１４に示すように、巻線動作中の巻線３は、巻線ノズル５０によって弓なりに反っており、その弓なりに反った頂点３ｃがスロット面１ｂ側に向いている。一方、図１５に示すように、巻線３は、スロット面１ｂに対して垂直方向に沿って延びているため、スロット面１ｂとコイル２の１層目との隙間ｗが低減され、さらに、２層目以降も隙間が低減されるため、コイル２が巻き締まる方向で巻かれる。このように、スロット面１ｂと巻線３との隙間ｗ、及び、巻線３間の隙間が低減されると、その分だけ、スロット面１ｂに巻線３を多く巻けるので、巻線占積率が高くなり、電動機２０の出力が大きくなるという利点がある。さらに、コイル２を形成する巻線３は、スロット面１ｂの方向に向かって凸になるように反りが生じているため、巻線３の剛性によりコイル２が巻き膨らむことを抑制することができる。 FIG. 15 is an explanatory view of the cross-sectional structure of the iron core 1 in which the coil 2 is formed by the winding machine 100 according to the first embodiment. In FIG. 15, arrow 80 indicates, for example, the X direction of FIG. 1, and arrow 81 indicates, for example, the Y direction of FIG. The cross section shown in FIG. 15 shows a cross section when one of the iron cores 1 of the stator 10 is cut in a plane parallel to the figure shown in FIG. As shown in FIG. 14, the winding 3 during the winding operation is warped in a bow shape by the winding nozzle 50, and the apex 3c warped in the bow shape faces the slot surface 1b side. On the other hand, as shown in FIG. 15, since the winding 3 extends in the direction perpendicular to the slot surface 1b, the gap w between the slot surface 1b and the first layer of the coil 2 is reduced, and further. Since the gap is reduced even in the second and subsequent layers, the coil 2 is wound in the winding direction. As described above, when the gap w between the slot surface 1b and the winding 3 and the gap between the windings 3 are reduced, more windings 3 can be wound around the slot surface 1b by that amount, so that the winding space is occupied. There is an advantage that the rate becomes high and the output of the electric motor 20 becomes large. Further, since the winding 3 forming the coil 2 is warped so as to be convex toward the slot surface 1b, it is possible to suppress the coil 2 from winding and swelling due to the rigidity of the winding 3. ..
　図１６は、実施の形態１に係る巻線機１００の巻線ノズル５０の比較例として、特許文献１に記載の巻線ノズル１５０の構成を示す説明図である。図１６（ａ）は、巻線ノズル１５０の固定側端面１５５を示す側面図であり、図１６（ｃ）は、巻線ノズル１５０の先端面１５６を示す側面図である。また、図１６（ｂ）は、巻線ノズル１５０の断面図である。図１７及び図１８は、図１６の比較例の巻線ノズル１５０に通した状態の巻線３を模式的に示す説明図である。 FIG. 16 is an explanatory diagram showing the configuration of the winding nozzle 150 described in Patent Document 1 as a comparative example of the winding nozzle 50 of the winding machine 100 according to the first embodiment. 16 (a) is a side view showing the fixed side end surface 155 of the winding nozzle 150, and FIG. 16 (c) is a side view showing the tip surface 156 of the winding nozzle 150. Further, FIG. 16B is a cross-sectional view of the winding nozzle 150. 17 and 18 are explanatory views schematically showing the winding 3 in a state of being passed through the winding nozzle 150 of the comparative example of FIG.
　図１６～図１８は、比較例の巻線ノズル１５０の巻線通し部１５１が貫通孔から構成されている場合を示している。巻線通し部１５１は、固定側端面１５５から先端面１５６まで延びた貫通孔である。巻線通し部１５１は、先端面１５６に形成された先端溝部１５２と連通している。巻線通し部１５１は、円柱形状の巻線ノズル１５０の中心軸Ａと平行に配置されている。ただし、巻線通し部１５１は、図１６（ｂ）に示すように、中心軸Ａ上には配置されておらず、中心軸Ａからシフトされた位置に配置されている。その理由は、図１７に示す長さｓを長くすることで、その部分の曲率半径Ｒを大きくするためである。以下では、その部分を「部分Ｓ」と呼ぶ。曲率半径Ｒが大きくなると、部分Ｓの長さｓが長くなり、部分Ｓを形成する曲線がなだらかになる。この原理について、図１９を用いて以下に説明する。図１９は、曲率半径と曲線の緩急との関係を示す説明図である。 16 to 18 show a case where the winding through portion 151 of the winding nozzle 150 of the comparative example is composed of a through hole. The winding threading portion 151 is a through hole extending from the fixed side end surface 155 to the tip end surface 156. The winding threading portion 151 communicates with the tip groove portion 152 formed on the tip surface 156. The winding threading portion 151 is arranged in parallel with the central axis A of the cylindrical winding nozzle 150. However, as shown in FIG. 16B, the winding threading portion 151 is not arranged on the central axis A, but is arranged at a position shifted from the central axis A. The reason is that the radius of curvature R of the portion is increased by increasing the length s shown in FIG. Hereinafter, the part is referred to as "part S". As the radius of curvature R increases, the length s of the portion S becomes longer, and the curve forming the portion S becomes gentle. This principle will be described below with reference to FIG. FIG. 19 is an explanatory diagram showing the relationship between the radius of curvature and the speed of the curve.
　一般に、曲線上の任意の点付近の曲線の微少部分は、その点での曲率半径を半径とする円で近似できることが知られている。図１９（ｂ）の点Ｖと点Ｗとを比較すると分かるように、点Ｖのように、曲率半径が大きいと、曲線の曲がり具合が緩く、点Ｗのように、曲率半径が小さいと、曲線の曲がり具合がきつくなる（点Ｗ参照）。 In general, it is known that a minute part of a curve near an arbitrary point on the curve can be approximated by a circle whose radius is the radius of curvature at that point. As can be seen by comparing the point V and the point W in FIG. 19B, when the radius of curvature is large like the point V, the curve is loosely curved, and when the radius of curvature is small like the point W, The curvature of the curve becomes tight (see point W).
　図１９（ａ）において、或る曲線Ｌ上の点Ｐから曲線Ｌに沿って長さｓだけ変位した点を点Ｑとする。長さｓの部分Ｓを円弧とみなし、その円の中心を点Ｃとし、各ＰＣＱをΔａとすると、円の半径Ｒと長さｓとの関係は、以下の式（１）で表される。ここで、πは円周率である。 In FIG. 19A, a point displaced from a point P on a certain curve L along the curve L by a length s is defined as a point Q. Assuming that the part S of the length s is regarded as an arc, the center of the circle is the point C, and each PCQ is Δa, the relationship between the radius R of the circle and the length s is expressed by the following equation (1). .. Here, π is the pi.
　　ｓ＝２πＲ×（Δａ／３６０°）　　　　　（１） S = 2πR × (Δa / 360 °) (1)
　π＝１８０°であるので、式（１）を整理すると、以下の式（２）が得られる。 Since π = 180 °, the following equation (2) can be obtained by rearranging the equation (1).
　　Ｒ＝ｓ／Δａ　　　　（２） R = s / Δa (2)
　すなわち、角度Δａが一定の場合、半径Ｒは、長さｓに比例して大きくなる。この原理を図１７に当てはめると、角度β１が一定の場合、長さｓを長くすれば、部分Ｓの半径Ｒは大きくなり、部分Ｓの曲線の曲がり具合が緩くなる。巻線通し部１５１が中心軸Ａ上に配置されている場合と比較して、図１７の比較例のように巻線通し部１５１が中心軸Ａからずれている場合の方が、長さｓは当然長くなる。そのため、比較例においては、部分Ｓの曲線部分を緩やかにするために、巻線通し部１５１を中心軸Ａからずらして配置している。 That is, when the angle Δa is constant, the radius R increases in proportion to the length s. Applying this principle to FIG. 17, when the angle β1 is constant, if the length s is lengthened, the radius R of the portion S becomes larger and the curve of the portion S becomes less curved. Compared with the case where the winding threading portion 151 is arranged on the central axis A, the case where the winding threading portion 151 is deviated from the central axis A as in the comparative example of FIG. 17 has a length s. Will naturally be longer. Therefore, in the comparative example, in order to make the curved portion of the portion S gentle, the winding threading portion 151 is arranged so as to be offset from the central axis A.
　その結果、比較例の巻線通し部１５１の内壁部１５１ａの厚さは、薄肉となっている。内壁部１５１ａが薄肉の場合、強度不足となり、強いテンションでの巻線動作には不向きである。これに対して、実施の形態１では、図１１（ａ）に示すように、巻線動作中に最も強い力が加わる部分の肉厚を厚くしている。すなわち、実施の形態１では、巻線挿入口５５ａ付近及び巻線供給口５３付近の内壁面５１ａの肉厚を厚くしている。そのため、十分な強度が確保でき、強いテンションでの巻線動作にも対応可能である。 As a result, the thickness of the inner wall portion 151a of the winding through portion 151 of the comparative example is thin. When the inner wall portion 151a is thin, the strength is insufficient and it is not suitable for winding operation with a strong tension. On the other hand, in the first embodiment, as shown in FIG. 11A, the wall thickness of the portion to which the strongest force is applied during the winding operation is increased. That is, in the first embodiment, the wall thickness of the inner wall surface 51a near the winding insertion port 55a and the vicinity of the winding supply port 53 is increased. Therefore, sufficient strength can be secured, and it is possible to handle winding operation with a strong tension.
　また、図１７に示すように、比較例では、巻線通し部１５１が内壁部１５１ａを長手方向の全長に亘って有しているため、内壁部１５１ａによって巻線３の動きが制限され、巻線３に引っ張り負荷がかかる。また、実施の形態１と比較すると、巻線３を角度β１だけ曲げる第１交差部１５７の曲率半径Ｒが小さいため、第１交差部１５７のＲ曲面形状が小さくなる。Ｒ曲面形状が小さくなると、巻線３に無理な力が加わり、巻線３が強く引っ張られることで、巻線３の伸び率が上昇する。巻線３の伸び率が上昇すると、巻線３の電気抵抗が増加し、ひいては、電動機２０の電気抵抗が増加してしまう。これに対して、実施の形態１では、巻線通し部５１を中心軸Ａに対して傾斜させて配置している。これにより、図１１に示す長さｓが、図１７の比較例の長さｓよりもさらに長くなっている。そのため、実施の形態１では、巻線３を角度βだけ曲げる第１交差部５７のＲ曲面形状の半径Ｒが大きくなり、第１交差部５７のＲ曲面形状が緩くなる。さらに、図１７と図１２とを比較すると明らかなように、本願の実施の形態１の第１交差部５７の角度βは、図１７の比較例の第１交差部１５７の角度β１よりも小さい。ここで、角度β１は、略９０°である。上記式（２）から、半径Ｒと角度Δａとが反比例関係にあることは明らかであるため、角度βが小さいほど、半径Ｒが大きくなることがわかる。このように、第１交差部５７の角度を小さくすると、その分だけ、第１交差部５７のＲ曲面形状が大きくなる。Ｒ曲面形状が大きくなると、巻線３に無理な力が加わらず、巻線３の伸び率が上昇することを防止することができる。 Further, as shown in FIG. 17, in the comparative example, since the winding through portion 151 has the inner wall portion 151a over the entire length in the longitudinal direction, the movement of the winding 3 is restricted by the inner wall portion 151a, and the winding 3 is wound. A pulling load is applied to the wire 3. Further, as compared with the first embodiment, since the radius of curvature R of the first intersection 157 that bends the winding 3 by the angle β1 is smaller, the R curved surface shape of the first intersection 157 becomes smaller. When the R curved surface shape becomes small, an unreasonable force is applied to the winding 3 and the winding 3 is strongly pulled, so that the elongation rate of the winding 3 increases. When the elongation rate of the winding 3 increases, the electric resistance of the winding 3 increases, which in turn increases the electric resistance of the electric motor 20. On the other hand, in the first embodiment, the winding threading portion 51 is arranged so as to be inclined with respect to the central axis A. As a result, the length s shown in FIG. 11 is further longer than the length s of the comparative example of FIG. Therefore, in the first embodiment, the radius R of the R curved surface shape of the first intersection 57 that bends the winding 3 by the angle β becomes large, and the R curved surface shape of the first intersection 57 becomes loose. Further, as is clear when comparing FIGS. 17 and 12, the angle β of the first intersection 57 of the first embodiment of the present application is smaller than the angle β1 of the first intersection 157 of the comparative example of FIG. .. Here, the angle β1 is approximately 90 °. From the above equation (2), it is clear that the radius R and the angle Δa have an inverse proportional relationship, so that it can be seen that the smaller the angle β, the larger the radius R. As described above, when the angle of the first intersection 57 is reduced, the R curved surface shape of the first intersection 57 is increased by that amount. When the R curved surface shape becomes large, it is possible to prevent the elongation rate of the winding 3 from increasing without applying an unreasonable force to the winding 3.
　さらに、実施の形態１では、巻線ノズル５０の先端面５６側に、巻線ノズル５０本体の側面５０ａで開口している先端開放部７０を設けている。先端開放部７０は、開口部７０ａにおいては内壁面５１ａを有しておらず、開放状態である。そのため、先端開放部７０を通る巻線３には、無理な力が一切加わることがなく、巻線３が強く引っ張られないため、巻線３の伸び率の上昇をさらに防止することができる。また、上述したように、部分Ｓの長さｓが長いほど、第１交差部５７のＲ曲面形状が緩くなる。実施の形態１では、巻線通し部５１を傾斜させ、且つ、先端開放部７０を設けたことで、巻線ノズル５０の直径に対して、長さｓを最大限長くしている。そのため、実施の形態１では、巻線３に最も引っ張り負荷がかからない構造を実現させている。 Further, in the first embodiment, the tip opening portion 70 opened on the side surface 50a of the winding nozzle 50 main body is provided on the tip surface 56 side of the winding nozzle 50. The tip open portion 70 does not have an inner wall surface 51a in the opening 70a and is in an open state. Therefore, no unreasonable force is applied to the winding wire 3 passing through the tip opening portion 70, and the winding wire 3 is not strongly pulled, so that it is possible to further prevent an increase in the elongation rate of the winding wire 3. Further, as described above, the longer the length s of the portion S, the looser the shape of the R curved surface of the first intersection 57. In the first embodiment, the winding threading portion 51 is inclined and the tip opening portion 70 is provided, so that the length s is made as long as possible with respect to the diameter of the winding nozzle 50. Therefore, in the first embodiment, a structure in which the winding 3 is least subjected to a tensile load is realized.
　また、図１７に示すように、比較例では、巻線挿入口１５５ａが中心軸Ａからずれて偏心して配置されている。そのため、巻線挿入口１５５ａから巻線通し部１５１に巻線３を挿入する際に、図１７に示すように、巻線３を曲げて変形させた状態で挿入する必要がある。これにより、巻線３に無理な力が加わり、巻線３の伸び率が上昇する。これに対して、実施の形態１では、図１２に示すように、巻線挿入口５５ａが中心軸Ａ上に配置されている。そのため、巻線挿入口５５ａから巻線通し部５１に巻線３を挿入する際に、図１２に示すように、巻線３を変形させる必要がないため、巻線３に無理な力が加わらず、巻線３の伸び率の上昇を防止することができる。また、実施の形態１では、巻線通し部５１を傾斜して配置しているため、巻線３がスムーズに通り、巻線動作時の巻線引っ張り負荷が小さい。 Further, as shown in FIG. 17, in the comparative example, the winding insertion port 155a is deviated from the central axis A and arranged eccentrically. Therefore, when inserting the winding 3 from the winding insertion port 155a into the winding through portion 151, it is necessary to insert the winding 3 in a bent and deformed state as shown in FIG. As a result, an unreasonable force is applied to the winding 3, and the elongation rate of the winding 3 increases. On the other hand, in the first embodiment, as shown in FIG. 12, the winding insertion port 55a is arranged on the central axis A. Therefore, when the winding 3 is inserted from the winding insertion port 55a into the winding through portion 51, as shown in FIG. 12, it is not necessary to deform the winding 3, so that an unreasonable force is applied to the winding 3. However, it is possible to prevent an increase in the elongation rate of the winding 3. Further, in the first embodiment, since the winding threading portion 51 is arranged in an inclined manner, the winding 3 passes smoothly and the winding pulling load during the winding operation is small.
　以上のように、実施の形態１では、巻線通し部５１を、巻線ノズル５０の中心軸Ａに対して傾斜させて配置している。これにより、巻線通し部５１を傾斜させない場合と比較して、第１交差部５７のＲ曲面形状が大きくなり、Ｒ曲面の半径Ｒが大きくなる。実施の形態１は、第１交差部５７の半径Ｒ又は曲率が、巻線ノズル５０の直径に対して最大限大きくできる構造である。このように、第１交差部５７のＲ曲面形状が大きくなると、巻線３に無理な力が加わらず、巻線３の引っ張り負荷が小さくなるので、巻線３の伸び率が上昇することを防止することができる。 As described above, in the first embodiment, the winding threading portion 51 is arranged so as to be inclined with respect to the central axis A of the winding nozzle 50. As a result, the shape of the R curved surface of the first intersection 57 becomes larger and the radius R of the R curved surface becomes larger than in the case where the winding threading portion 51 is not tilted. The first embodiment has a structure in which the radius R or the curvature of the first intersection 57 can be made as large as possible with respect to the diameter of the winding nozzle 50. In this way, when the R curved surface shape of the first intersection 57 becomes large, an unreasonable force is not applied to the winding 3, and the tensile load of the winding 3 becomes small, so that the elongation rate of the winding 3 increases. Can be prevented.
　さらに、実施の形態１では、巻線通し部５１の先端面５６側の端部に、巻線ノズル５０本体の側面５０ａ－２で開口している先端開放部７０を設けている。先端開放部７０は、内壁面５１ａを有しておらず、外部に対して開放状態である。そのため、先端開放部７０を通る巻線３の動きは、内壁面５１ａによって抑制されない。その結果、先端開放部７０を通る巻線３には、無理な力が一切加わることがなく、巻線３が強く引っ張られないため、巻線３の伸び率の上昇をさらに防止することができる。 Further, in the first embodiment, the tip opening portion 70 opened by the side surface 50a-2 of the winding nozzle 50 main body is provided at the end of the winding threading portion 51 on the tip surface 56 side. The tip opening portion 70 does not have an inner wall surface 51a and is in an open state to the outside. Therefore, the movement of the winding wire 3 passing through the tip opening portion 70 is not suppressed by the inner wall surface 51a. As a result, no unreasonable force is applied to the winding 3 passing through the tip opening portion 70, and the winding 3 is not strongly pulled, so that it is possible to further prevent an increase in the elongation rate of the winding 3. ..
　また、実施の形態１では、巻線通し部５１が、貫通孔から形成された貫通孔部７１を有している。貫通孔部７１は、内壁面５１ａを有している。そのため、巻線３は、貫通孔部７１においては、内壁面５１ａによって周囲が覆われているため、巻線ノズル５０から離脱することはない。これにより、巻線機１００の巻線３の巻線動作中、渡り線３Ａの配線動作中、及び、Ｕ側インシュレータ４及びＬ側インシュレータ５への巻線３の絡げ動作中に、巻線３が巻線ノズル５０から外れることを防止することができる。 Further, in the first embodiment, the winding through portion 51 has a through hole portion 71 formed from the through hole. The through hole portion 71 has an inner wall surface 51a. Therefore, since the winding 3 is covered with the inner wall surface 51a in the through hole portion 71, the winding 3 does not separate from the winding nozzle 50. As a result, the winding is performed during the winding operation of the winding 3 of the winding machine 100, the wiring operation of the crossover wire 3A, and the entanglement operation of the winding 3 with the U-side insulator 4 and the L-side insulator 5. 3 can be prevented from coming off the winding nozzle 50.
　実施の形態１では、巻線通し部５１を、巻線ノズル５０の中心軸Ａに対して傾斜させて配置している。また、巻線挿入口５５ａを、固定側端面５５の中央部分に配置している。また、巻線通し部５１の傾斜方向を、先端溝部５２の延設方向と反対方向にしている。これにより、巻線３が挿入される巻線挿入口５５ａ付近、及び、巻線３が引き出される巻線供給口５３付近では、巻線ノズル５０の内壁面５１ａが肉厚になっている。これにより、巻線ノズル５０の強度が確保される。 In the first embodiment, the winding threading portion 51 is arranged so as to be inclined with respect to the central axis A of the winding nozzle 50. Further, the winding insertion port 55a is arranged in the central portion of the fixed side end surface 55. Further, the inclination direction of the winding threading portion 51 is opposite to the extending direction of the tip groove portion 52. As a result, the inner wall surface 51a of the winding nozzle 50 is thickened in the vicinity of the winding insertion port 55a into which the winding 3 is inserted and in the vicinity of the winding supply port 53 from which the winding 3 is pulled out. This ensures the strength of the winding nozzle 50.
　１　鉄心、１ａ　ティース、１ｂ　スロット面、２　コイル、３　巻線、３Ａ　渡り線、３ａ　巻き付け部、３ｂ　巻線引き出し部、３ｃ　頂点、４　Ｕ側インシュレータ、５　Ｌ側インシュレータ、１０　固定子、１１　回転子、１２　回転軸、２０　電動機、５０　巻線ノズル、５０ａ　側面、５０ａ－１　側面、５０ａ－２　側面、５１　巻線通し部、５１ａ　内壁面、５２　先端溝部、５２ａ　内壁面、５３　巻線供給口、５５　固定側端面、５５ａ　巻線挿入口、５６　先端面、５６ａ　巻線供給部、５７　第１交差部、５８　第２交差部、５９　第３交差部、６０　駆動ユニット、６１　ノズル保持部、６２　滑車、６３　テンショナ部、６４　巻線ボビン、７０　先端開放部、７０ａ　開口部、７１　貫通孔部、８０　制御装置、９０　矢印、１００　巻線機、１５０　巻線ノズル、１５１　巻線通し部、１５１ａ　内壁部、１５５　固定側端面、１５５ａ　巻線挿入口、１５６　先端面、１５７　第１交差部、１５８　第２交差部、２００　圧縮機、２００ａ　筐体、２００ｂ　圧縮機構、２００ｃ　吸入口、２００ｄ　吐出口、Ａ　中心軸、Ｄ１　矢印、Ｄ２　矢印、Ｄ３　矢印。 1 iron core, 1a teeth, 1b slot surface, 2 coil, 3 winding, 3A crossover wire, 3a winding part, 3b winding drawer part, 3c apex, 4U side insulator, 5L side insulator, 10 stator, 11 rotation Child, 12 rotating shaft, 20 electric motor, 50 winding nozzle, 50a side surface, 50a-1 side surface, 50a-2 side surface, 51 winding threading part, 51a inner wall surface, 52 tip groove part, 52a inner wall surface, 53 winding supply port , 55 Fixed side end face, 55a winding insertion port, 56 tip surface, 56a winding supply part, 57 1st intersection, 58 2nd intersection, 59 3rd intersection, 60 drive unit, 61 nozzle holding part, 62 Coil, 63 tensioner, 64 winding bobbin, 70 tip opening, 70a opening, 71 through hole, 80 control device, 90 arrow, 100 winding machine, 150 winding nozzle, 151 winding through part, 151a inner wall Part, 155 fixed side end face, 155a winding insertion port, 156 tip surface, 157 first intersection, 158 second intersection, 200 compressor, 200a housing, 200b compression mechanism, 200c suction port, 200d discharge port, A Central axis, D1 arrow, D2 arrow, D3 arrow.

Claims (11)

  1. 　鉄心に巻線を巻き付けてコイルを形成する巻線機で用いられ、柱状の外形形状を有し、先端面から前記巻線が引き出され、前記鉄心の周囲を移動して、前記巻線を前記鉄心に巻き付ける巻線ノズルであって、
    　前記巻線機のノズル保持部に取り付けられる固定側端面である第１端面と、
    　前記巻線が引き出される前記先端面である第２端面と、
    　前記第１端面から前記第２端面にわたって巻線が通るように、前記第１端面から前記第２端面まで前記巻線ノズルの長手方向に延びた巻線通し部と、
    　前記巻線通し部と連通して前記第２端面に溝状に形成された先端溝部と
    　を備え、
    　前記先端溝部は、前記第２端面において、前記巻線ノズルの外周を構成する第１側面から前記巻線ノズルの外周を構成し前記第１側面に対向する第２側面まで延設され、
    　前記巻線通し部は、前記巻線ノズルの長手方向に延びる中心軸に対して傾斜して配置され、
    　前記巻線通し部の前記中心軸に対して傾斜する方向は、前記先端溝部の延設方向と反対方向である、
    　巻線ノズル。     Used in a winding machine that winds a winding around an iron core to form a coil, it has a columnar outer shape, the winding is pulled out from the tip surface, and moves around the iron core to roll the winding. A winding nozzle that winds around an iron core
    The first end face, which is the fixed side end face attached to the nozzle holding portion of the winding machine, and
    The second end surface, which is the tip surface from which the winding is pulled out,
    A winding threading portion extending in the longitudinal direction of the winding nozzle from the first end surface to the second end surface so that the winding passes from the first end surface to the second end surface.
    It is provided with a tip groove portion formed in a groove shape on the second end surface so as to communicate with the winding through portion.
    The tip groove portion extends from the first side surface constituting the outer periphery of the winding nozzle to the second side surface forming the outer periphery of the winding nozzle and facing the first side surface on the second end surface.
    The winding threading portion is arranged so as to be inclined with respect to a central axis extending in the longitudinal direction of the winding nozzle.
    The direction in which the winding through portion is inclined with respect to the central axis is opposite to the extending direction of the tip groove portion.
    Winding nozzle.
  2. 　前記巻線通し部は、前記巻線通し部の前記第２端面側の端部に設けられ、前記先端溝部と連通する先端開放部を有し、
    　前記先端開放部は、前記巻線ノズルの前記第１側面で開口されている、
    　請求項１に記載の巻線ノズル。     The winding threading portion is provided at the end portion of the winding threading portion on the second end surface side, and has a tip opening portion that communicates with the tip groove portion.
    The tip opening portion is opened on the first side surface of the winding nozzle.
    The winding nozzle according to claim 1.
  3. 　前記巻線通し部は、前記第１端面から前記先端開放部までを貫通する貫通孔で形成された貫通孔部を有している、
    　請求項２に記載の巻線ノズル。     The winding through portion has a through hole portion formed by a through hole penetrating from the first end surface to the tip opening portion.
    The winding nozzle according to claim 2.
  4. 　前記巻線通し部の前記第１端面側の端部には、前記巻線を挿入する巻線挿入口が設けられ、
    　前記巻線挿入口は、前記巻線ノズルの前記第１端面において前記中心軸上に配置されている、
    　請求項１～３のいずれか１項に記載の巻線ノズル。     A winding insertion port for inserting the winding is provided at the end of the winding through portion on the first end surface side.
    The winding insertion port is arranged on the central axis at the first end surface of the winding nozzle.
    The winding nozzle according to any one of claims 1 to 3.
  5. 　前記巻線通し部の内壁面と前記先端溝部の内壁面とが交わる第１交差部は、
    　曲面による連続した面で接続されている、
    　請求項１～４のいずれか１項に記載の巻線ノズル。     The first intersection where the inner wall surface of the winding through portion and the inner wall surface of the tip groove portion intersect is
    Connected by a continuous surface with a curved surface,
    The winding nozzle according to any one of claims 1 to 4.
  6. 　前記第１端面から前記第２端面までの間に配置されている前記巻線ノズルの前記第１側面と前記先端溝部の内壁面とが交わる第２交差部は、
    　曲面による連続した面で接続されている、
    　請求項１～５のいずれか１項に記載の巻線ノズル。     The second intersection where the first side surface of the winding nozzle arranged between the first end surface and the second end surface intersects with the inner wall surface of the tip groove portion is
    Connected by a continuous surface with a curved surface,
    The winding nozzle according to any one of claims 1 to 5.
  7. 　前記第１端面と前記巻線通し部の内壁面とが交わる第３交差部は、
    　曲面による連続した面で接続されている、
    　請求項１～６のいずれか１項に記載の巻線ノズル。     The third intersection where the first end surface and the inner wall surface of the winding threading portion intersect is
    Connected by a continuous surface with a curved surface,
    The winding nozzle according to any one of claims 1 to 6.
  8. 　少なくとも１つの請求項１～７のいずれか１項に記載の巻線ノズルと、
    　前記巻線ノズルを保持するノズル保持部と、
    　前記ノズル保持部を水平方向に移動させる駆動ユニットと
    　を備えた、巻線機。     The winding nozzle according to any one of claims 1 to 7.
    A nozzle holding portion that holds the winding nozzle and
    A winding machine provided with a drive unit that moves the nozzle holding portion in the horizontal direction.
  9. 　前記巻線ノズルは、
    　当該巻線ノズルの前記中心軸を軸にして自転可能に前記ノズル保持部に保持される、
    　請求項８に記載の巻線機。     The winding nozzle is
    The winding nozzle is held on the nozzle holding portion so as to rotate around the central axis of the winding nozzle.
    The winding machine according to claim 8.
  10. 　前記巻線ノズルの水平方向位置及び前記巻線ノズルの前記中心軸を軸とする自転角度を制御する制御装置をさらに備え、
    　制御装置は、
    　前記巻線のうち前記巻線ノズルの前記先端溝部から前記鉄心のティースに巻き付けられた巻き付け部までの間の部分を巻線引き出し部としたときに、
    　前記巻線引き出し部と前記先端溝部の延設方向とが成す角度が一定の値となるように、前記水平方向位置及び前記自転角度を制御する、
    　請求項９に記載の巻線機。     Further provided with a control device for controlling the horizontal position of the winding nozzle and the rotation angle around the central axis of the winding nozzle.
    The control device is
    When the portion of the winding between the tip groove portion of the winding nozzle and the winding portion wound around the tooth of the iron core is used as the winding drawer portion.
    The horizontal position and the rotation angle are controlled so that the angle formed by the winding lead-out portion and the extension direction of the tip groove portion becomes a constant value.
    The winding machine according to claim 9.
  11. 　少なくとも１つの前記巻線ノズルは、
    　複数の巻線ノズルから構成され、
    　前記複数の巻線ノズルは、
    　同時に動くように構成されている、
    　請求項８～１０のいずれか１項に記載の巻線機。     At least one of the winding nozzles
    Consists of multiple winding nozzles
    The plurality of winding nozzles
    It is configured to move at the same time,
    The winding machine according to any one of claims 8 to 10.
PCT/JP2020/047095 2020-12-17 2020-12-17 Winding nozzle and winding machine WO2022130557A1 (en)

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CN202080106660.1A CN116458044A (en) 2020-12-17 2020-12-17 Wire winding mouth and wire winding machine
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PCT/JP2020/047095 WO2022130557A1 (en) 2020-12-17 2020-12-17 Winding nozzle and winding machine

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11156436A (en) * 1997-11-28 1999-06-15 Nittoku Eng Co Ltd Winder
JP2004523190A (en) * 2000-10-16 2004-07-29 グロウブ モーターズ，インコーポレイテッド Dynamo electric stator winding device
JP2008270309A (en) * 2007-04-17 2008-11-06 Citizen Electronics Co Ltd Coil winding nozzle and process for manufacturing small-sized coil using coil winding nozzle
EP2957023B1 (en) * 2013-02-15 2017-03-29 SMZ Wickel- und Montagetechnik AG Nozzle suspension and winding device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11156436A (en) * 1997-11-28 1999-06-15 Nittoku Eng Co Ltd Winder
JP2004523190A (en) * 2000-10-16 2004-07-29 グロウブ モーターズ，インコーポレイテッド Dynamo electric stator winding device
JP2008270309A (en) * 2007-04-17 2008-11-06 Citizen Electronics Co Ltd Coil winding nozzle and process for manufacturing small-sized coil using coil winding nozzle
EP2957023B1 (en) * 2013-02-15 2017-03-29 SMZ Wickel- und Montagetechnik AG Nozzle suspension and winding device

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