WO2020065853A1 - Winding nozzle and winding machine - Google Patents

Winding nozzle and winding machine Download PDF

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Publication number
WO2020065853A1
WO2020065853A1 PCT/JP2018/036049 JP2018036049W WO2020065853A1 WO 2020065853 A1 WO2020065853 A1 WO 2020065853A1 JP 2018036049 W JP2018036049 W JP 2018036049W WO 2020065853 A1 WO2020065853 A1 WO 2020065853A1
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WO
WIPO (PCT)
Prior art keywords
winding
nozzle
end surface
tip
groove
Prior art date
Application number
PCT/JP2018/036049
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French (fr)
Japanese (ja)
Inventor
計憲 足達
勇太 小林
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 JP2020547742A priority Critical patent/JP7008836B2/en
Priority to PCT/JP2018/036049 priority patent/WO2020065853A1/en
Priority to CN201880096969.XA priority patent/CN112740520A/en
Publication of WO2020065853A1 publication Critical patent/WO2020065853A1/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
    • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines

Definitions

  • the present invention relates to a winding nozzle for manufacturing a coil and a winding machine, and more particularly to a shape of a nozzle for feeding a winding.
  • a coil used for a stator or the like of an electric motor is manufactured by winding a winding around an iron core constituting a stator or the like of an electric motor by winding a coil through a nozzle attached to a biaxial linear motion mechanism.
  • a winding machine that winds a winding around an iron core includes a two-axis linear motion mechanism having a nozzle attached thereto, a pulley unit, a tensioner unit, and a coil bobbin.
  • the winding machine forms a coil by winding the winding around the iron core by moving the nozzle around the iron core so that the tip of the nozzle goes around.
  • the nozzle is arranged such that the direction in which the winding passes through the inside hollow shape is parallel to the center axis of the coil.
  • the hollow shape through which the winding of the nozzle is passed has an R shape at the tip.
  • the winding When wound around an iron core, the winding is bent in the direction in which the iron core is arranged, along the R-shape at the tip of the hollow shape. That is, the winding is wound around the iron core while being bent in a direction transverse to the direction in which the hollow shape in the nozzle extends (for example, see Patent Document 1).
  • a winding machine in which the nozzle is rotatable like a pendulum in a certain plane is known.
  • the angle is changed by rotating the nozzle in accordance with the direction in which the winding is drawn out (for example, see Patent Document 2).
  • the winding machine can suppress a variation in tension applied to the winding due to a change in the direction in which the winding is pulled out during winding, and can also straighten the winding in the winding direction. To form a coil.
  • the winding machine disclosed in Patent Document 1 is wound around the iron core constituting the stator while bending the winding along the R shape at the tip of the nozzle, the winding is warped.
  • the winding machine winds the winding around the winding surface of the iron core while applying tension to the winding by a tensioner unit. Therefore, the winding is warped in the direction of the center axis of the coil, that is, in the direction in which the windings are stacked in the coil. Therefore, the coil has a problem that a gap is easily generated between adjacent windings, and the space factor of the winding wound around the iron core is reduced.
  • the present invention has been made to solve the above-described problems, and it is an object of the present invention to improve a space factor of a winding of a coil in a stator of an electric motor or the like, thereby improving a coil manufacturing efficiency and a winding nozzle. It is intended to provide a wire machine.
  • a winding nozzle of the present invention is a winding machine for winding a winding around an iron core to form a coil, wherein the winding is drawn out, moves around the iron core, and winds the winding around the iron core.
  • a fixed end surface that is an end surface attached to the nozzle holding portion of the winding machine; a tip end surface that is an end surface from which the winding is drawn; and the winding extending from the fixed end surface to the tip end surface.
  • a wire passing portion formed so that a wire passes therethrough; and a tip groove formed in a groove shape on the tip surface in communication with the wire passing portion.
  • the winding machine of the present invention includes at least one of the above-described winding nozzles, a nozzle holding unit that holds the winding nozzle, and a horizontal movement mechanism that moves the nozzle holding unit in a horizontal direction.
  • the gap between the windings wound on the iron core can be reduced, the space factor of the coil wound on the iron core is improved.
  • the winding nozzle is controlled to move in the horizontal direction and wind the winding around the iron core, multiple winding nozzles can be installed on the winding machine and operated simultaneously, increasing the efficiency of coil production by the winding machine. Is also possible.
  • FIG. 2 is a schematic diagram showing the entire structure of the winding machine according to the first embodiment. It is a top view showing an example of the structure of the stator of the electric motor.
  • FIG. 3 is a side view of a stator of the electric motor in FIG. 2.
  • FIG. 3 is an explanatory diagram showing movement of a winding nozzle when a coil is formed on an iron core by the winding machine according to the first embodiment.
  • FIG. 2 is a perspective view of a winding nozzle of the winding machine according to the first embodiment.
  • FIG. 2 is a front view and a side view of a winding nozzle of the winding machine according to the first embodiment.
  • FIG. 2 is a sectional view of a winding nozzle of the winding machine according to the first embodiment.
  • FIG. 3 is an explanatory diagram illustrating a state in which a winding is passed through a winding nozzle of the winding machine according to the first embodiment
  • FIG. 3 is an explanatory diagram illustrating a state in which a winding is passed through a winding nozzle of the winding machine according to the first embodiment
  • FIG. 2 is a schematic diagram showing a state in which a winding is wound around teeth of an iron core in the winding machine according to the first embodiment
  • FIG. 2 is an explanatory diagram of a cross-sectional structure of an iron core 1 in which a coil is formed by the winding machine according to the first embodiment.
  • FIG. 3 is an explanatory diagram of a cross-sectional structure of a winding nozzle 150 as a comparative example of the winding nozzle of the winding machine according to Embodiment 1. It is a side view of the coil wound around the iron core using the winding nozzle of the comparative example. It is the front view and side view of the winding nozzle of the winding machine which concerns on Embodiment 2. FIG. It is sectional drawing of the winding nozzle of the winding machine which concerns on Embodiment 2.
  • FIG. 1 is a schematic diagram illustrating an overall structure of a winding machine 100 according to Embodiment 1.
  • FIG. 2 is a plan view showing an example of the structure of the stator 10 of the electric motor.
  • FIG. 3 is a side view of the stator 10 of the electric motor of FIG.
  • the winding machine 100 is for forming the coil 2 constituting the stator 10 of the electric motor, for example.
  • the coil 2 is formed by winding the winding 3 around the teeth 1 a of the iron core 1 constituting the stator 10.
  • the iron core 1 is schematically shown, and is not limited to this shape. As shown in FIG. 2, for example, twelve iron cores 1 are arranged in an annular shape to form a stator 10.
  • Each iron core 1 includes an insulating part 4.
  • the insulating part 4 is formed integrally with the iron core 1 or is formed by attaching the formed part to the iron core 1.
  • a crossover wiring connecting the coils 2 is fixed, terminals and the like are arranged.
  • the winding 3 is wound around the slot surface 1 b of each iron core 1 by the winding machine 100 with the plurality of iron cores 1 connected to form the coil 2.
  • each iron core 1 is formed into an annular shape, and the iron cores 1 at the ends of the plurality of connected iron cores 1 are joined to each other by welding or the like. 3 is formed.
  • the stator 10 is built in, for example, an electric motor (not shown), and a rotor (not shown) is disposed on a cylindrical portion formed on the inner peripheral side of each of the iron cores 1 arranged in a ring shape. Is done.
  • electric motor electric power is supplied to the coil 2 from wiring connected to the stator 10, and the rotor is driven to rotate by a magnetic field generated by the coil 2 and the iron core 1.
  • the winding machine 100 guides the winding 3, a nozzle holding unit 61 to which the winding nozzle 50 is attached, a horizontal movement mechanism 60 that moves the nozzle holding unit 61 in the horizontal direction.
  • the vehicle includes a pulley 62, a tensioner 63 for adjusting the tension of the winding 3, and a coil bobbin 64 holding the winding 3.
  • the winding 3 is pulled out from the coil bobbin 64, passes through the tensioner 63, is guided by the pulley 62, and passes through the inside of the nozzle holder 61.
  • the winding 3 that has passed through the nozzle holding unit 61 passes through the winding nozzle 50 held by the nozzle holding unit 61 and is drawn out from the tip of the winding nozzle 50.
  • the tip of the winding 3 is fixed to the iron core 1 and is wound around the slot surface 1b of the tooth 1a.
  • the winding machine 100 includes a control device 80, and controls at least a mechanism for rotating the horizontal moving mechanism 60, the tensioner 63, and the winding nozzle 50.
  • FIG. 4 is an explanatory diagram showing the movement of the winding nozzle 50 when the coil 2 is formed on the iron core 1 by the winding machine 100 according to the first embodiment.
  • coil 2 is wound in a state where stator 10 is deployed such that cores 1 of stator 10 are arranged in a straight line.
  • the windings 3 are simultaneously wound around the teeth 1a of the first to third iron cores 1 from the right.
  • the winding nozzle 50 is arranged so that the direction in which the winding 3 is passed, that is, the longitudinal direction of the winding nozzle 50 is orthogonal to the plane on which the stator 10 is developed.
  • the winding nozzle 50 moves along a locus t shown in FIG.
  • the winding nozzle 50 moves around the tooth 1a so as to draw a substantially rectangular shape, and winds the winding 3 around the tooth 1a.
  • the winding nozzle 50 is configured to be rotatable around the central axis of the winding nozzle 50.
  • the trajectory t shown in FIG. 4 is an example, and the trajectory t may move around the teeth 1a so as to draw another shape. Further, the rotation direction r may be opposite.
  • FIG. 5 is a perspective view of the winding nozzle 50 of the winding machine 100 according to the first embodiment.
  • FIG. 6 is a front view and a side view of the winding nozzle 50 of the winding machine 100 according to the first embodiment.
  • FIG. 7 is a sectional view of the winding nozzle 50 of the winding machine 100 according to the first embodiment.
  • FIG. 7 shows a cross section taken along the line AA of FIG.
  • the winding machine 100 passes the winding 3 from one end face to the other end face of the winding nozzle 50, and moves the winding nozzle 50 around the teeth 1 a of the iron core 1 so that the winding nozzle 50 The winding 3 pulled out from the distal end face 56 is wound around the tooth 1a.
  • the winding nozzle 50 is formed in a shape in which a groove is provided on the outer peripheral surface of a cylindrical shape.
  • the shape of the winding nozzle 50 is not limited to a cylindrical shape, and any other shape may be adopted as long as the winding 3 is passed from one end surface to the other end surface. good.
  • one end surface is fixed end surface 55 and the other end surface is front end surface 56.
  • the winding nozzle 50 is provided with a winding passing portion 51 along the central axis of the columnar shape.
  • the winding passing portion 51 is formed in a groove shape on the outer peripheral surface of the cylindrical winding nozzle 50, and is located on the tip end side where the winding 3 is pulled out from the fixed side end surface 55 located on the nozzle holding portion 61 side. Leading end surface 56.
  • a tip groove 52 is provided on a tip surface 56 of the winding nozzle 50.
  • the tip groove 52 is a groove formed on the tip surface 56. Both ends of the tip groove 52 in the extending direction are open at the winding nozzle side face 50 a located between the fixed side end face 55 and the tip face 56, that is, at the main body side face of the winding nozzle 50.
  • the winding nozzle side surface 50 a is provided with a flat surface 54 near the fixed end surface 55.
  • the flat surface 54 is a detent for preventing the winding nozzle 50 from shifting in the rotation direction r around the central axis of the winding nozzle 50 when the winding nozzle 50 is fixed to the nozzle holding portion 61.
  • the winding through portion 51 and the tip groove 52 communicate with each other. That is, the winding portion 51 and the tip groove 52 are connected to each other so as to form a path for one winding 3.
  • the first crossing portion 57 which is a portion where the inner wall surface 51a of the winding passage portion 51 and the inner wall surface 52a of the tip groove portion 52 intersect, is provided with a curved surface, and has a continuous surface between the inner wall surface 51a and the inner wall surface 52a. It is connected so that it may become.
  • the first intersecting portion 57 has an arcuate cross section, but may have another curved shape, and a smooth curved line so that the winding 3 does not cut when contacted. It is desirable to be composed of
  • the tip groove 52 is opened at the winding nozzle side surface 50a at both ends in the direction in which the groove shape extends.
  • the second intersection portion 58 which is a portion where the inner wall surface 52a of the tip groove 52 intersects with the winding nozzle side surface 50a, is provided with a curved surface so that the inner wall surface 52a and the winding nozzle side surface 50a are continuous surfaces. It has a curved surface. That is, the ridgeline formed by the intersection between the inner wall surface 52a and the winding nozzle side surface 50a is all formed of a curved surface.
  • the second intersecting portion 58 has an arc shape in cross section, but may have another curved shape, and a smooth curved line so that the winding 3 does not cut when it comes into contact. It is desirable to be composed of
  • the third intersection portion 59 where the inner wall surface 51 a of the winding portion 51 intersects with the fixed end surface 55 is also curved such that the inner wall surface 51 a and the fixed end surface 55 are continuous. It is composed of
  • the third crossing portion 59 also has an arc shape in cross section, but may have another curved shape, and may be formed of a smooth curve so that no cutting occurs when the winding 3 contacts. desirable.
  • FIGS. 8 and 9 are explanatory views showing a state where the winding 3 is passed through the winding nozzle 50 of the winding machine 100 according to the first embodiment.
  • FIG. 10 is a schematic diagram showing a state where winding 3 is wound around teeth 1a of iron core 1 in winding machine 100 according to the first embodiment.
  • the winding nozzle 50 includes a groove-shaped winding passage portion 51 extending from the fixed side end surface 55 to the front end surface 56, and a front end groove portion 52 formed in the front end surface 56 in a groove shape. , Is provided.
  • the winding 3 enters the winding part 51 from the fixed side end face 55 of the winding nozzle 50 through each part of the winding machine 100, and reaches the leading end groove 52 along the winding part 51.
  • the winding 3 that has reached the tip groove 52 is directed toward the winding nozzle side surface 50a along the curved surface of the first intersection 57, which is the portion where the winding passage 51 of the winding nozzle 50 and the tip groove 52 intersect. Bendable. Then, as shown in FIG. 9, the winding 3 bent toward the winding nozzle side surface 50 a extends along the tip groove 52 and is drawn out in a direction intersecting the longitudinal direction of the winding nozzle 50.
  • the winding nozzle 50 goes around the teeth 1a, and winds the winding 3 around the slot surface 1b.
  • the extending direction of the tip groove 52 forms an angle ⁇ with respect to the winding lead-out portion 30 which is a portion of the winding 3 located between the winding portion 33 wound around the slot surface 1b and the tip groove 52. It is aimed at. Therefore, the winding 3 is bent along the second intersecting portion 58 at a portion pulled out from the tip groove 52.
  • the winding 3 is drawn out while being pressed against the curved surface of the second intersection 58 at a portion drawn out from the tip groove 52 of the winding nozzle 50.
  • the winding 3 is warped in a direction perpendicular to the slot surface 1b of the tooth 1a due to the curved surface of the second intersection portion 58. That is, the winding lead portion 30 is warped so as to project toward the slot surface 1b.
  • the winding nozzle 50 orbits around the teeth 1a while keeping the angle ⁇ between the tip groove 52 and the winding lead-out portion 30 constant. That is, the winding nozzle 50 is controlled by the control device such that the horizontal position changes and the rotation angle becomes constant. Therefore, the winding 3 is wound while receiving a force such that it is constantly warped in a direction perpendicular to the slot surface 1b while being wound around the teeth 1a.
  • FIG. 11 is an explanatory diagram of a cross-sectional structure of the iron core 1 on which the coil 2 is formed by the winding machine 100 according to the first embodiment.
  • the cross section shown in FIG. 11 shows a cross section of one of the iron cores 1 of the stator 10 in a plane parallel to the drawing shown in FIG.
  • the wound winding 3 is bowed and the apex of the bow is directed to the slot surface 1 b side. Since the winding 3 extends in a 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 the gap is further reduced in the second and subsequent layers. 2 is wound in the direction of tightening.
  • the winding 3 forming the coil 2 is warped so as to protrude toward the slot surface 1b, it is possible to suppress the coil 2 from expanding due to the rigidity of the winding 3.
  • FIG. 12 is an explanatory diagram of a cross-sectional structure of a winding nozzle 150 as a comparative example of the winding nozzle 50 of the winding machine 100 according to Embodiment 1.
  • the winding nozzle 150 can be mounted instead of the winding nozzle 50 of the winding machine 100 shown in FIG.
  • the fixed side end surface 155 side of the winding nozzle 150 is fixed to the nozzle holding portion 61, and the winding 3 is pulled out from the front end surface 156.
  • a cylindrical winding passing portion 151 penetrating from the fixed side end surface 155 to the front end surface 156 is formed inside the winding nozzle 150.
  • a first intersection 157 between the inner wall of the winding part 151 and the distal end surface 156 and a third intersection 159 between the inner wall of the winding part 151 and the fixed end surface 155 are continuously connected by curved surfaces, respectively. I have.
  • the winding nozzle 150 moves similarly to the winding nozzle 50 of the first embodiment, and winds the winding 3 around the slot surface 1 b of the iron core 1. At this time, the winding 3 pulled out from the tip end surface 156 of the winding nozzle 150 is drawn out while being pressed against the first intersection 157. Thereby, the winding lead portion 130 of the winding 3 is warped so as to be convex rightward in FIG.
  • FIG. 13 is a side view of the coil 102 wound around the iron core 1 using the winding nozzle 150 of the comparative example.
  • FIG. 13 is a diagram of one iron core 1 of the stator 10 viewed from the side, and is a diagram viewed from the direction of arrow A in FIG.
  • the warping direction of the winding 3 is formed in an arc in a direction parallel to the slot surface 1 b. Therefore, as shown in FIG. 13, since the windings 3 warp in a direction parallel to the slot surface 1b, a gap between the windings 3 is likely to be generated in a direction parallel to the slot surface 1b. Further, the winding 3 is not warped in the vertical direction of the slot surface 1b, and the coil 102 is easily swelled due to the rigidity of the winding 3.
  • the winding nozzle 50 according to the first embodiment unlike the case where the winding nozzle 150 of the comparative example is used, the winding 3 has no warpage parallel to the slot surface 1b.
  • the winding 3 is wound in a straight state in a direction parallel to. Therefore, the gap between the windings 3 can be reduced. Therefore, the coil 2 can arrange more windings 3 in the direction parallel to the slot surface 1b.
  • the winding nozzle 50 according to the first embodiment since the winding 3 is warped in the direction perpendicular to the slot surface 1b, the winding 3 is easily tightened. It is possible to suppress the coil 2 from expanding due to the rigidity.
  • the coil 2 can arrange more windings 3 in the direction perpendicular to the slot surface 1b.
  • the coil 2 can increase the number of windings 3 in a direction perpendicular to and parallel to the slot surface 1b.
  • the space factor is improved. That is, in the directions of arrows P and Q shown in FIG. 11, the space between the layers of the windings 3 constituting the coil 2 is clogged, and the density of the windings 3 increases. Thereby, the coil 2 can generate a stronger magnetic field when a predetermined current flows, and the performance of the electric motor and the like is improved.
  • Embodiment 2 FIG.
  • the winding nozzle 250 of the winding machine 200 according to the second embodiment is different from the winding nozzle 50 of the winding machine 100 according to the first embodiment in that the shape of the winding portion 51 is changed.
  • a description will be given focusing on a change from the first embodiment.
  • those having the same function in each drawing are denoted by the same reference numerals as those used in the description of the first embodiment.
  • FIG. 14 is a front view and a side view of a winding nozzle 250 of the winding machine 200 according to the second embodiment.
  • FIG. 15 is a cross-sectional view of the winding nozzle 250 of the winding machine 200 according to Embodiment 2.
  • FIG. 15 shows a cross section taken along the line BB of FIG.
  • the winding nozzle 250 is used in the winding machine 200 shown in FIG. 1, and is fixed to the nozzle holding unit 61 similarly to the winding nozzle 50 according to the first embodiment.
  • the winding through portion 51 is formed in a groove shape, but the winding through portion 251 of the winding nozzle 250 penetrates from the fixed end face 55 to the tip end face 56. It is configured with a hole.
  • the winding nozzle 250 has a tip groove 252 on the tip face 56. Similarly to the winding nozzle 50 according to the first embodiment, the tip groove 252 communicates with the winding passage 251 and is a groove that opens to the winding nozzle side surface 50a.
  • the winding nozzle 250 is moved to form the coil 2 on the iron core 1 in the same manner as the winding machine 100 according to the first embodiment.
  • the winding nozzle 250 winds the winding 3 while warping the winding 3 in the vertical direction with respect to the slot surface 1 b of the iron core 1.
  • the space between the windings 3 is closed, the density of the winding 3 can be increased, and the space factor of the winding 3 is improved.
  • the winding through portion 251 is formed of a through hole, the passed winding 3 does not come off from the winding through portion 251. Therefore, it is possible to suppress a problem such as the winding 3 coming off from the winding nozzle 250 and stopping while the winding machine 200 is operating.

Abstract

The purpose of the present invention is to provide a winding nozzle and a winding machine that can improve manufacturing efficiency by increasing the winding space factor of a coil in a stator, etc., of an electric motor. A winding nozzle according to the present invention is for a winding machine which winds a winding wire on an iron core and forms a coil, and is configured such that a winding wire is drawn out and moved around an iron core so as to be wound on the iron core. The winding nozzle is provided with: a fixed-side end surface which is an end surface, on one side, attached to a nozzle holding part of the winding machine; a leading-end surface which is an end surface, on a side, from which the winding wire is drawn out; a winding wire passage which is formed so as to cause the wining wire to pass therethrough from the fixed side end surface to the tip surface; a leading end groove which is formed in a groove shape in the leading end surface, and is connected to the winding wire passage.

Description

巻線ノズル、及び巻線機Winding nozzle and winding machine
　本発明は、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 invention relates to a winding nozzle for manufacturing a coil and a winding machine, and more 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、２軸直動機構に取り付けられたノズルを通して巻線が繰り出され、電動機の固定子等を構成する鉄心に巻線を巻き付けて製造される。鉄心に巻線を巻き付ける巻線機は、ノズルが取り付けられた２軸直動機構、滑車部、テンショナ部、コイルボビンで構成される。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 or the like of an electric motor is manufactured by winding a winding around an iron core constituting a stator or the like of an electric motor by winding a coil through a nozzle attached to a biaxial linear motion mechanism. A winding machine that winds a winding around an iron core includes a two-axis linear motion mechanism having a nozzle attached thereto, a pulley unit, a tensioner unit, and a coil bobbin. The winding machine forms a coil by winding the winding around the iron core by moving the nozzle around the iron core so that the tip of the nozzle goes around.
　ノズルは、内部の中空形状に巻線が通されている方向をコイルの中心軸と平行にして配置されている。ノズルの巻線が通される中空形状は、先端部にＲ形状が設けられている。巻線は、鉄心に巻き付けられる際に、中空形状の先端部のＲ形状に沿って、鉄心が配置されている方向に曲げられる。つまり、巻線は、ノズル内の中空形状が延びる方向に対し横方向に曲げられながら、鉄心に巻き付けられる（例えば、特許文献１を参照）。 The nozzle is arranged such that the direction in which the winding passes through the inside hollow shape is parallel to the center axis of the coil. The hollow shape through which the winding of the nozzle is passed has an R shape at the tip. When wound around an iron core, the winding is bent in the direction in which the iron core is arranged, along the R-shape at the tip of the hollow shape. That is, the winding is wound around the iron core while being bent in a direction transverse to the direction in which the hollow shape in the nozzle extends (for example, see Patent Document 1).
　また、ノズルをある面内で振り子のように回転自在に構成した巻線機も知られている。この場合、巻線が引き出される方向に合わせてノズルが回転して角度を変更する（例えば、特許文献２を参照）。このように構成されることにより、巻線機は、巻き付けの際に巻線が引き出される方向が変わることによる、巻線に掛かるテンションの変動を抑えることができると共に、巻線を巻き付け方向に真っ直ぐにしてコイルを形成できる。 巻 線 Also, a winding machine in which the nozzle is rotatable like a pendulum in a certain plane is known. In this case, the angle is changed by rotating the nozzle in accordance with the direction in which the winding is drawn out (for example, see Patent Document 2). With this configuration, the winding machine can suppress a variation in tension applied to the winding due to a change in the direction in which the winding is pulled out during winding, and can also straighten the winding in the winding direction. To form a coil.
特開２００４－３２８８４４号公報JP 2004-328844 A 特開２００１－１１８７４０号公報JP 2001-118740 A
　しかし、特許文献１に開示されている巻線機は、巻線をノズル先端のＲ形状に沿って曲げながら固定子を構成する鉄心に巻き付けていくため、巻線に反りを発生させる。巻線機は、テンショナ部により巻線に張力をかけながら鉄心の巻付け面に巻線を巻き付ける。そのため、巻線は、コイルの中心軸方向、つまりコイルにおいて巻線を積層する方向に反りを持っている。従って、コイルは、隣合う巻線との間に隙間が発生しやすく、鉄心に巻き付けられる巻線の占積率が低下するという課題があった。 However, since the winding machine disclosed in Patent Document 1 is wound around the iron core constituting the stator while bending the winding along the R shape at the tip of the nozzle, the winding is warped. The winding machine winds the winding around the winding surface of the iron core while applying tension to the winding by a tensioner unit. Therefore, the winding is warped in the direction of the center axis of the coil, that is, in the direction in which the windings are stacked in the coil. Therefore, the coil has a problem that a gap is easily generated between adjacent windings, and the space factor of the winding wound around the iron core is reduced.
　また、特許文献２に開示されている巻線機の場合、特許文献１に開示されている巻線機でコイルを巻いたときのように巻線を積層する方向に反りを発生させることはない。しかし、巻き付けた巻線の剛性により、巻線を巻き付けた外周方向にコイルが膨らむ。これにより、コイルは、鉄心に巻き付けられる巻線の占有率が低下するという課題があった。さらに、特許文献２に開示されているようなノズルを用いた場合、鉄心とノズルとを一対一で対応させる必要があるため、複数の鉄心が連続してつながって形成される電動機の固定子等においては、複数の鉄心に対し同時にコイルを巻き付けることが出来ないため、製造の効率が低いという課題があった。 Further, in the case of the winding machine disclosed in Patent Literature 2, warping does not occur in the direction in which the windings are stacked, unlike when the coil is wound by the winding machine disclosed in Patent Literature 1. . However, due to the rigidity of the wound winding, the coil expands in the outer circumferential direction around which the winding is wound. As a result, the coil has a problem that the occupancy of the winding wound around the iron core is reduced. Furthermore, when a nozzle as disclosed in Patent Document 2 is used, it is necessary to make the iron core correspond to the nozzle in a one-to-one correspondence. Therefore, a stator of an electric motor formed by connecting a plurality of iron cores continuously is used. However, there is a problem in that the manufacturing efficiency is low because a coil cannot be wound around a plurality of iron cores at the same time.
　本発明は、上記のような課題を解決するためになされたもので、電動機の固定子等においてコイルの巻線の占積率を向上させ、コイルの製造の効率を向上できる巻線ノズル及び巻線機を提供することを目的とする。 SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to improve a space factor of a winding of a coil in a stator of an electric motor or the like, thereby improving a coil manufacturing efficiency and a winding nozzle. It is intended to provide a wire machine.
　本発明の巻線ノズルは、鉄心に巻線を巻き付けてコイルを形成する巻線機において、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側の端面である固定側端面と、前記巻線が引き出される側の端面である先端面と、前記固定側端面から前記先端面にわたって前記巻線が通るように形成された巻線通し部と、前記巻線通し部と連通して前記先端面に溝状に形成された先端溝部と、を備える。 A winding nozzle of the present invention is a winding machine for winding a winding around an iron core to form a coil, wherein the winding is drawn out, moves around the iron core, and winds the winding around the iron core. A fixed end surface that is an end surface attached to the nozzle holding portion of the winding machine; a tip end surface that is an end surface from which the winding is drawn; and the winding extending from the fixed end surface to the tip end surface. A wire passing portion formed so that a wire passes therethrough; and a tip groove formed in a groove shape on the tip surface in communication with the wire passing portion.
　本発明の巻線機は、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水平移動機構と、を備える。 The winding machine of the present invention includes at least one of the above-described winding nozzles, a nozzle holding unit that holds the winding nozzle, and a horizontal movement mechanism that moves the nozzle holding unit in a horizontal direction.
　本発明によれば、鉄心に巻き付けられた巻線の間の隙間を詰めることができるため、鉄心に巻き付けられたコイルの巻線占積率が向上する。また、巻線ノズルは、制御されて水平方向に移動して鉄心に巻線を巻き付けるため、巻線機に複数本設置して同時に動かすことができ、巻線機によるコイルの製造効率を上げることも可能となる。 According to the present invention, since the gap between the windings wound on the iron core can be reduced, the space factor of the coil wound on the iron core is improved. In addition, since the winding nozzle is controlled to move in the horizontal direction and wind the winding around the iron core, multiple winding nozzles can be installed on the winding machine and operated simultaneously, increasing the efficiency of coil production by the winding machine. Is also possible.
実施の形態１に係る巻線機の全体構造を示す模式図である。FIG. 2 is a schematic diagram showing the entire structure of the winding machine according to the first embodiment. 電動機の固定子の構造の一例を示す平面図である。It is a top view showing an example of the structure of the stator of the electric motor. 図２の電動機の固定子の側面図である。FIG. 3 is a side view of a stator of the electric motor in FIG. 2. 実施の形態１に係る巻線機により鉄心にコイルを形成する際の巻線ノズルの動きを示す説明図である。FIG. 3 is an explanatory diagram showing movement of a winding nozzle when a coil is formed on an iron core by the winding machine according to the first embodiment. 実施の形態１に係る巻線機の巻線ノズルの斜視図である。FIG. 2 is a perspective view of a winding nozzle of the winding machine according to the first embodiment. 実施の形態１に係る巻線機の巻線ノズルの正面図及び側面図である。FIG. 2 is a front view and a side view of a winding nozzle of the winding machine according to the first embodiment. 実施の形態１に係る巻線機の巻線ノズルの断面図である。FIG. 2 is a sectional view of a winding nozzle of the winding machine according to the first embodiment. 実施の形態１に係る巻線機の巻線ノズルに巻線を通した状態を示す説明図である。FIG. 3 is an explanatory diagram illustrating a state in which a winding is passed through a winding nozzle of the winding machine according to the first embodiment; 実施の形態１に係る巻線機の巻線ノズルに巻線を通した状態を示す説明図である。FIG. 3 is an explanatory diagram illustrating a state in which a winding is passed through a winding nozzle of the winding machine according to the first embodiment; 実施の形態１に係る巻線機において鉄心のティースに巻線を巻き付けている状態の模式図である。FIG. 2 is a schematic diagram showing a state in which a winding is wound around teeth of an iron core in the winding machine according to the first embodiment; 実施の形態１に係る巻線機によりコイルが形成された鉄心１の断面構造の説明図である。FIG. 2 is an explanatory diagram of a cross-sectional structure of an iron core 1 in which a coil is formed by the winding machine according to the first embodiment. 実施の形態１に係る巻線機の巻線ノズルの比較例としての巻線ノズル１５０の断面構造の説明図である。FIG. 3 is an explanatory diagram of a cross-sectional structure of a winding nozzle 150 as a comparative example of the winding nozzle of the winding machine according to Embodiment 1. 比較例の巻線ノズルを用いて鉄心に巻き付けられたコイルの側面図である。It is a side view of the coil wound around the iron core using the winding nozzle of the comparative example. 実施の形態２に係る巻線機の巻線ノズルの正面図及び側面図である。It is the front view and side view of the winding nozzle of the winding machine which concerns on Embodiment 2. FIG. 実施の形態２に係る巻線機の巻線ノズルの断面図である。It is sectional drawing of the winding nozzle of the winding machine which concerns on Embodiment 2.
　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、電動機の固定子１０の構造の一例を示す平面図である。図３は、図２の電動機の固定子１０の側面図である。巻線機１００は、例えば電動機の固定子１０を構成するコイル２を形成するためのものである。コイル２は、固定子１０を構成する鉄心１のティース１ａに巻線３を巻き付けることにより形成される。なお、図１において、鉄心１は模式的に表してあり、この形状に限定されるものではない。図２に示される様に、鉄心１は、例えば１２個を円環状に並べられて固定子１０を形成する。各鉄心１は、絶縁部４を備えている。絶縁部４は、鉄心１に一体に成形されるか、又は成形されたものを鉄心１に取り付けて構成される。絶縁部４は、各コイル２間を繋ぐ渡り配線が固定されたり、端子等が配置される。 Embodiment 1 FIG.
FIG. 1 is a schematic diagram illustrating an overall structure of a winding machine 100 according to Embodiment 1. FIG. 2 is a plan view showing an example of the structure of the stator 10 of the electric motor. FIG. 3 is a side view of the stator 10 of the electric motor of FIG. The winding machine 100 is for forming the coil 2 constituting the stator 10 of the electric motor, for example. The coil 2 is formed by winding the winding 3 around the teeth 1 a of the iron core 1 constituting the stator 10. In addition, in FIG. 1, the iron core 1 is schematically shown, and is not limited to this shape. As shown in FIG. 2, for example, twelve iron cores 1 are arranged in an annular shape to form a stator 10. Each iron core 1 includes an insulating part 4. The insulating part 4 is formed integrally with the iron core 1 or is formed by attaching the formed part to the iron core 1. In the insulating section 4, a crossover wiring connecting the coils 2 is fixed, terminals and the like are arranged.
　固定子１０は、鉄心１が複数接続された状態で、巻線機１００により巻線３が各鉄心１のスロット面１ｂに巻き付けられコイル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、各鉄心１を環状にし、複数接続された鉄心１のうち端部の鉄心１同士を溶接等により接合することにより、図２及び図３に示される固定子１０が形成される。 In the stator 10, the winding 3 is wound around the slot surface 1 b of each iron core 1 by the winding machine 100 with the plurality of iron cores 1 connected to form the coil 2. After the coil 2 is formed on the slot surface 1b of each iron core 1, each iron core 1 is formed into an annular shape, and the iron cores 1 at the ends of the plurality of connected iron cores 1 are joined to each other by welding or the like. 3 is formed.
　固定子１０は、例えば電動機（図示せず）に内蔵されるものであり、円環状に並べられた各鉄心１の内周側に形成される筒状部に回転子（図示せず）が配置される。電動機は、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を回転駆動するものである。 The stator 10 is built in, for example, an electric motor (not shown), and a rotor (not shown) is disposed on a cylindrical portion formed on the inner peripheral side of each of the iron cores 1 arranged in a ring shape. Is done. In the electric motor, electric power is supplied to the coil 2 from wiring connected to the stator 10, and the rotor is driven to rotate by a magnetic field generated by the coil 2 and the iron core 1.
　図１に示される様に、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水平移動機構６０と、巻線３をガイドする滑車６２と、巻線３の張力を調整するテンショナ部６３と、巻線３が保持されているコイルボビン６４とを備える。 As illustrated in FIG. 1, the winding machine 100 guides the winding 3, a nozzle holding unit 61 to which the winding nozzle 50 is attached, a horizontal movement mechanism 60 that moves the nozzle holding unit 61 in the horizontal direction. The vehicle includes a pulley 62, a tensioner 63 for adjusting the tension of the winding 3, and a coil bobbin 64 holding the winding 3.
　巻線３は、コイルボビン６４から引き出され、テンショナ部６３を通って、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により保持された巻線ノズル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、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、少なくとも、水平移動機構６０、テンショナ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 coil bobbin 64, passes through the tensioner 63, is guided by the pulley 62, and passes through the inside of the nozzle holder 61. The winding 3 that has passed through the nozzle holding unit 61 passes through the winding nozzle 50 held by the nozzle holding unit 61 and is drawn out from the tip of the winding nozzle 50. The tip of the winding 3 is fixed to the iron core 1 and is wound around the slot surface 1b of the tooth 1a. Further, the winding machine 100 includes a control device 80, and controls at least a mechanism for rotating the horizontal moving mechanism 60, the tensioner 63, and the winding nozzle 50.
　図４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の動きを示す説明図である。実施の形態１においては、固定子１０の各鉄心１が直線状に並ぶように固定子１０を展開した状態でコイル２が巻き付けられる。実施の形態１においては、右から１番目から３番目までのそれぞれの鉄心１のティース１ａに同時に巻線３が巻き付けられる。巻線ノズル５０は、巻線３が通される方向、つまり巻線ノズル５０の長手方向を、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４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を巻き付けることになる。また、巻線ノズル５０は、当該巻線ノズル５０の中心軸周りに自転自在に構成されている。なお、図４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の周りを移動してもよい。また、自転方向ｒが逆向きであっても良い。 FIG. 4 is an explanatory diagram showing the movement of the winding nozzle 50 when the coil 2 is formed on the iron core 1 by the winding machine 100 according to the first embodiment. In the first embodiment, coil 2 is wound in a state where stator 10 is deployed such that cores 1 of stator 10 are arranged in a straight line. In the first embodiment, the windings 3 are simultaneously wound around the teeth 1a of the first to third iron cores 1 from the right. The winding nozzle 50 is arranged so that the direction in which the winding 3 is passed, that is, the longitudinal direction of the winding nozzle 50 is orthogonal to the plane on which the stator 10 is developed. The winding nozzle 50 moves along a locus t shown in FIG. That is, the winding nozzle 50 moves around the tooth 1a so as to draw a substantially rectangular shape, and winds the winding 3 around the tooth 1a. The winding nozzle 50 is configured to be rotatable around the central axis of the winding nozzle 50. The trajectory t shown in FIG. 4 is an example, and the trajectory t may move around the teeth 1a so as to draw another shape. Further, the rotation direction r may be opposite.
　図５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６は、実施の形態１に係る巻線機１００の巻線ノズル５０の正面図及び側面図である。図７は、実施の形態１に係る巻線機１００の巻線ノズル５０の断面図である。図７は、図６のＡ－Ａ部の断面を示している。巻線機１００は、巻線ノズル５０の一方の端面から他方の端面に亘って巻線３を通し、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、巻線ノズル５０の先端面５６から引き出された巻線３をティース１ａに巻き付ける。実施の形態１において、巻線ノズル５０は、円柱形状の外周面に溝を設けた形状に形成されている。ただし、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、一方の端面から他方の端面に亘って巻線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。実施の形態１においては、一方の端面は、固定側端面５５であり、他方の端面は、先端面５６である。 FIG. 5 is a perspective view of the winding nozzle 50 of the winding machine 100 according to the first embodiment. FIG. 6 is a front view and a side view of the winding nozzle 50 of the winding machine 100 according to the first embodiment. FIG. 7 is a sectional view of the winding nozzle 50 of the winding machine 100 according to the first embodiment. FIG. 7 shows a cross section taken along the line AA of FIG. The winding machine 100 passes the winding 3 from one end face to the other end face of the winding nozzle 50, and moves the winding nozzle 50 around the teeth 1 a of the iron core 1 so that the winding nozzle 50 The winding 3 pulled out from the distal end face 56 is wound around the tooth 1a. In the first embodiment, the winding nozzle 50 is formed in a shape in which a groove is provided on the outer peripheral surface of a cylindrical shape. However, the shape of the winding nozzle 50 is not limited to a cylindrical shape, and any other shape may be adopted as long as the winding 3 is passed from one end surface to the other end surface. good. In the first embodiment, one end surface is fixed end surface 55 and the other end surface is front end surface 56.
　巻線ノズル５０は、円柱形状の中心軸に沿って巻線通し部５１が設けられている。巻線通し部５１は、円柱形状の巻線ノズル５０の外周面に溝状に形成されており、ノズル保持部６１側に位置する固定側端面５５から巻線３が引き出される先端部側に位置する先端面５６に到っている。 The winding nozzle 50 is provided with a winding passing portion 51 along the central axis of the columnar shape. The winding passing portion 51 is formed in a groove shape on the outer peripheral surface of the cylindrical winding nozzle 50, and is located on the tip end side where the winding 3 is pulled out from the fixed side end surface 55 located on the nozzle holding portion 61 side. Leading end surface 56.
　巻線ノズル５０の先端面５６には先端溝部５２が設けられている。先端溝部５２は、先端面５６に形成される溝である。先端溝部５２の延設方向の両端は、固定側端面５５から先端面５６までの間に位置する巻線ノズル側面５０ａ、つまり巻線ノズル５０の本体側面において開口している。 先端 A tip groove 52 is provided on a tip surface 56 of the winding nozzle 50. The tip groove 52 is a groove formed on the tip surface 56. Both ends of the tip groove 52 in the extending direction are open at the winding nozzle side face 50 a located between the fixed side end face 55 and the tip face 56, that is, at the main body side face of the winding nozzle 50.
　巻線ノズル側面５０ａは、固定側端面５５の近傍に平面５４が設けられている。平面５４は、巻線ノズル５０がノズル保持部６１に固定される際に巻線ノズル５０の中心軸周りの自転方向ｒにずれないための回り止めである。 平面 The winding nozzle side surface 50 a is provided with a flat surface 54 near the fixed end surface 55. The flat surface 54 is a detent for preventing the winding nozzle 50 from shifting in the rotation direction r around the central axis of the winding nozzle 50 when the winding nozzle 50 is fixed to the nozzle holding portion 61.
　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。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、曲面が設けられており、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、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 through portion 51 and the tip groove 52 communicate with each other. That is, the winding portion 51 and the tip groove 52 are connected to each other so as to form a path for one winding 3. The first crossing portion 57, which is a portion where the inner wall surface 51a of the winding passage portion 51 and the inner wall surface 52a of the tip groove portion 52 intersect, is provided with a curved surface, and has a continuous surface between the inner wall surface 51a and the inner wall surface 52a. It is connected so that it may become. In the first embodiment, the first intersecting portion 57 has an arcuate cross section, but may have another curved shape, and a smooth curved line so that the winding 3 does not cut when contacted. It is desirable to be composed of
　先端溝部５２は、溝形状が延設される方向の両端において、巻線ノズル側面５０ａに開口されている。先端溝部５２の内壁面５２ａと巻線ノズル側面５０ａとが交わる部分である第２交差部５８は、曲面が設けられており、内壁面５２ａと巻線ノズル側面５０ａとが連続した面となるように曲面で構成されている。つまり、内壁面５２ａと巻線ノズル側面５０ａ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、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 tip groove 52 is opened at the winding nozzle side surface 50a at both ends in the direction in which the groove shape extends. The second intersection portion 58, which is a portion where the inner wall surface 52a of the tip groove 52 intersects with the winding nozzle side surface 50a, is provided with a curved surface so that the inner wall surface 52a and the winding nozzle side surface 50a are continuous surfaces. It has a curved surface. That is, the ridgeline formed by the intersection between the inner wall surface 52a and the winding nozzle side surface 50a is all formed of a curved surface. In the first embodiment, the second intersecting portion 58 has an arc shape in cross section, but may have another curved shape, and a smooth curved line so that the winding 3 does not cut when it comes into contact. It is desirable to be composed of
　図７に示される様に、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も、内壁面５１ａと固定側端面５５とが連続した面となるように曲面で構成されている。第３交差部５９も、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。 As shown in FIG. 7, the third intersection portion 59 where the inner wall surface 51 a of the winding portion 51 intersects with the fixed end surface 55 is also curved such that the inner wall surface 51 a and the fixed end surface 55 are continuous. It is composed of The third crossing portion 59 also has an arc shape in cross section, but may have another curved shape, and may be formed of a smooth curve so that no cutting occurs when the winding 3 contacts. desirable.
　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に巻線３を通した状態を示す説明図である。図１０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８に示される様に、巻線ノズル５０は、固定側端面５５から先端面５６に到る溝状の巻線通し部５１と、先端面５６に溝状に形成されている先端溝部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に沿って先端溝部５２に到る。 FIGS. 8 and 9 are explanatory views showing a state where the winding 3 is passed through the winding nozzle 50 of the winding machine 100 according to the first embodiment. FIG. 10 is a schematic diagram showing a state where winding 3 is wound around teeth 1a of iron core 1 in winding machine 100 according to the first embodiment. As shown in FIG. 8, the winding nozzle 50 includes a groove-shaped winding passage portion 51 extending from the fixed side end surface 55 to the front end surface 56, and a front end groove portion 52 formed in the front end surface 56 in a groove shape. , Is provided. The winding 3 enters the winding part 51 from the fixed side end face 55 of the winding nozzle 50 through each part of the winding machine 100, and reaches the leading end groove 52 along the winding part 51.
　先端溝部５２に到った巻線３は、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側面５０ａ側に曲げられる。そして、図９に示される様に巻線ノズル側面５０ａ側に向かって曲げられた巻線３は、先端溝部５２に沿って延び、巻線ノズル５０の長手方向に対し交差する方向に引き出される。 The winding 3 that has reached the tip groove 52 is directed toward the winding nozzle side surface 50a along the curved surface of the first intersection 57, which is the portion where the winding passage 51 of the winding nozzle 50 and the tip groove 52 intersect. Bendable. Then, as shown in FIG. 9, the winding 3 bent toward the winding nozzle side surface 50 a extends along the tip groove 52 and is drawn out in a direction intersecting the longitudinal direction of the winding nozzle 50.
　図１０に示される様に、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。先端溝部５２の延設方向は、巻線３のうちスロット面１ｂに巻き付けられている巻き付け部３３から先端溝部５２までの間に位置する部分である巻線引き出し部３０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。 巻 線 As shown in FIG. 10, the winding nozzle 50 goes around the teeth 1a, and winds the winding 3 around the slot surface 1b. The extending direction of the tip groove 52 forms an angle θ with respect to the winding lead-out portion 30 which is a portion of the winding 3 located between the winding portion 33 wound around the slot surface 1b and the tip groove 52. It is aimed at. Therefore, the winding 3 is bent along the second intersecting portion 58 at a portion pulled out from the tip groove 52.
　巻線３は、巻線ノズル５０の先端溝部５２から引き出される部分で第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に対し垂直方向に反りが生じる。つまり、巻線引き出し部３０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３０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。つまり、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により制御されている。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に対し垂直方向に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 a portion drawn out from the tip groove 52 of the winding nozzle 50. As a result, the winding 3 is warped in a direction perpendicular to the slot surface 1b of the tooth 1a due to the curved surface of the second intersection portion 58. That is, the winding lead portion 30 is warped so as to project toward the slot surface 1b. The winding nozzle 50 orbits around the teeth 1a while keeping the angle θ between the tip groove 52 and the winding lead-out portion 30 constant. That is, the winding nozzle 50 is controlled by the control device such that the horizontal position changes and the rotation angle becomes constant. Therefore, the winding 3 is wound while receiving a force such that it is constantly warped in a direction perpendicular to the slot surface 1b while being wound around the teeth 1a.
　図１１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１１に示された断面は、固定子１０の鉄心１のうち１つを図２に示される図と平行な面における断面を示している。上記のように、巻線３を巻き付けて形成されたコイル２は、巻き付けられた巻線３が弓なりに反っており、その弓なりに反った頂点がスロット面１ｂ側に向いている。巻線３がスロット面１ｂに対して垂直方向に沿っているため、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。さらに、コイル２を形成する巻線３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. 11 is an explanatory diagram of a cross-sectional structure of the iron core 1 on which the coil 2 is formed by the winding machine 100 according to the first embodiment. The cross section shown in FIG. 11 shows a cross section of one of the iron cores 1 of the stator 10 in a plane parallel to the drawing shown in FIG. As described above, in the coil 2 formed by winding the winding 3, the wound winding 3 is bowed and the apex of the bow is directed to the slot surface 1 b side. Since the winding 3 extends in a 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 the gap is further reduced in the second and subsequent layers. 2 is wound in the direction of tightening. Furthermore, since the winding 3 forming the coil 2 is warped so as to protrude toward the slot surface 1b, it is possible to suppress the coil 2 from expanding due to the rigidity of the winding 3.
　図１２は、実施の形態１に係る巻線機１００の巻線ノズル５０の比較例としての巻線ノズル１５０の断面構造の説明図である。巻線ノズル１５０は、図１に示される巻線機１００の巻線ノズル５０の代わりに取り付けが可能である。巻線ノズル１５０は、固定側端面１５５側がノズル保持部６１に固定され、先端面１５６から巻線３が引き出される。巻線ノズル１５０の内部は、固定側端面１５５から先端面１５６まで貫通した筒状の巻線通し部１５１が形成されている。巻線通し部１５１の内壁と先端面１５６との第１交差部１５７、及び巻線通し部１５１の内壁と固定側端面１５５との第３交差部１５９は、それぞれ曲面で連続的に接続されている。 FIG. 12 is an explanatory diagram of a cross-sectional structure of a winding nozzle 150 as a comparative example of the winding nozzle 50 of the winding machine 100 according to Embodiment 1. The winding nozzle 150 can be mounted instead of the winding nozzle 50 of the winding machine 100 shown in FIG. The fixed side end surface 155 side of the winding nozzle 150 is fixed to the nozzle holding portion 61, and the winding 3 is pulled out from the front end surface 156. Inside the winding nozzle 150, a cylindrical winding passing portion 151 penetrating from the fixed side end surface 155 to the front end surface 156 is formed. A first intersection 157 between the inner wall of the winding part 151 and the distal end surface 156 and a third intersection 159 between the inner wall of the winding part 151 and the fixed end surface 155 are continuously connected by curved surfaces, respectively. I have.
　巻線ノズル１５０は、実施の形態１の巻線ノズル５０と同様に移動し、鉄心１のスロット面１ｂに巻線３を巻き付ける。このとき、巻線ノズル１５０の先端面１５６から引き出される巻線３は、第１交差部１５７に押し付けられながら引き出される。これにより、巻線３の巻線引き出し部１３０は、図１２の右方向に凸となるように反りが生じる。 The winding nozzle 150 moves similarly to the winding nozzle 50 of the first embodiment, and winds the winding 3 around the slot surface 1 b of the iron core 1. At this time, the winding 3 pulled out from the tip end surface 156 of the winding nozzle 150 is drawn out while being pressed against the first intersection 157. Thereby, the winding lead portion 130 of the winding 3 is warped so as to be convex rightward in FIG.
　図１３は、比較例の巻線ノズル１５０を用いて鉄心１に巻き付けられたコイル１０２の側面図である。図１３は、固定子１０の１つの鉄心１を側面から見た図であり、図４の矢印Ａ方向から見た図である。巻線ノズル１５０により鉄心１に巻線３を巻き付けた場合、巻線３の反り方向がスロット面１ｂに平行方向に弓なりになっている。そのため、図１３に示される様に、巻線３がスロット面１ｂの平行方向に反るため、スロット面１ｂに平行な方向において、巻線３間の隙間が生じやすい。また、巻線３は、スロット面１ｂの垂直方向に反っておらず、コイル１０２が巻線３の剛性により巻き膨らみやすい。 FIG. 13 is a side view of the coil 102 wound around the iron core 1 using the winding nozzle 150 of the comparative example. FIG. 13 is a diagram of one iron core 1 of the stator 10 viewed from the side, and is a diagram viewed from the direction of arrow A in FIG. When the winding 3 is wound around the iron core 1 by the winding nozzle 150, the warping direction of the winding 3 is formed in an arc in a direction parallel to the slot surface 1 b. Therefore, as shown in FIG. 13, since the windings 3 warp in a direction parallel to the slot surface 1b, a gap between the windings 3 is likely to be generated in a direction parallel to the slot surface 1b. Further, the winding 3 is not warped in the vertical direction of the slot surface 1b, and the coil 102 is easily swelled due to the rigidity of the winding 3.
　一方、実施の形態１に係る巻線ノズル５０によれば、巻線３は、比較例の巻線ノズル１５０を用いた場合と異なり、スロット面１ｂに平行方向の反りがないため、スロット面１ｂに平行な方向において、巻線３は真っ直ぐな状態で巻かれる。そのため、巻線３同士の隙間を小さくすることができる。従って、スロット面１ｂに平行な方向において、コイル２は、巻線３をより多く配置できる。また、上述のように、実施の形態１に係る巻線ノズル５０によれば、巻線３がスロット面１ｂに垂直方向に反っているため、巻線３は、巻き締まり易く、巻線３の剛性によりコイル２が膨らむのを抑制することができる。従って、スロット面１ｂに垂直な方向において、コイル２は、巻線３をより多く配置できる。コイル２は、スロット面１ｂに垂直な方向及び平行な方向において巻線３の数を多くすることができるため、比較例の巻線ノズル１５０により巻かれたコイル１０２に対して、巻線３の占積率が向上する。つまり、図１１に示される矢印Ｐ、Ｑの方向においてコイル２を構成する巻線３の各層の間が詰まり、巻線３の密度が高くなる。これにより、コイル２は、所定の電流を流した場合により強い磁界を生じさせることができ、電動機等の性能が向上する。 On the other hand, according to the winding nozzle 50 according to the first embodiment, unlike the case where the winding nozzle 150 of the comparative example is used, the winding 3 has no warpage parallel to the slot surface 1b. The winding 3 is wound in a straight state in a direction parallel to. Therefore, the gap between the windings 3 can be reduced. Therefore, the coil 2 can arrange more windings 3 in the direction parallel to the slot surface 1b. Further, as described above, according to the winding nozzle 50 according to the first embodiment, since the winding 3 is warped in the direction perpendicular to the slot surface 1b, the winding 3 is easily tightened. It is possible to suppress the coil 2 from expanding due to the rigidity. Therefore, the coil 2 can arrange more windings 3 in the direction perpendicular to the slot surface 1b. The coil 2 can increase the number of windings 3 in a direction perpendicular to and parallel to the slot surface 1b. The space factor is improved. That is, in the directions of arrows P and Q shown in FIG. 11, the space between the layers of the windings 3 constituting the coil 2 is clogged, and the density of the windings 3 increases. Thereby, the coil 2 can generate a stronger magnetic field when a predetermined current flows, and the performance of the electric motor and the like is improved.
　実施の形態２．
　実施の形態２に係る巻線機２００の巻線ノズル２５０は、実施の形態１に係る巻線機１００の巻線ノズル５０に対し、巻線通し部５１の形状を変更したものである。実施の形態２に係る巻線機２００においては、実施の形態１に対する変更点を中心に説明する。実施の形態２に係る巻線機２００の各部については、各図面において同一の機能を有するものは実施の形態１の説明で使用した図面と同一の符号を付して表示するものとする。 Embodiment 2 FIG.
The winding nozzle 250 of the winding machine 200 according to the second embodiment is different from the winding nozzle 50 of the winding machine 100 according to the first embodiment in that the shape of the winding portion 51 is changed. In the winding machine 200 according to the second embodiment, a description will be given focusing on a change from the first embodiment. Regarding each part of the winding machine 200 according to the second embodiment, those having the same function in each drawing are denoted by the same reference numerals as those used in the description of the first embodiment.
　図１４は、実施の形態２に係る巻線機２００の巻線ノズル２５０の正面図及び側面図である。図１５は、実施の形態２に係る巻線機２００の巻線ノズル２５０の断面図である。図１５は、図１４のＢ－Ｂ部の断面を示している。巻線ノズル２５０は、図１に示される巻線機２００で用いられるものであり、実施の形態１に係る巻線ノズル５０と同様にノズル保持部６１に固定される。実施の形態１に係る巻線ノズル５０においては、巻線通し部５１が溝状に形成されているが、巻線ノズル２５０の巻線通し部２５１は、固定側端面５５から先端面５６まで貫通した孔で構成したものである。 FIG. 14 is a front view and a side view of a winding nozzle 250 of the winding machine 200 according to the second embodiment. FIG. 15 is a cross-sectional view of the winding nozzle 250 of the winding machine 200 according to Embodiment 2. FIG. 15 shows a cross section taken along the line BB of FIG. The winding nozzle 250 is used in the winding machine 200 shown in FIG. 1, and is fixed to the nozzle holding unit 61 similarly to the winding nozzle 50 according to the first embodiment. In the winding nozzle 50 according to the first embodiment, the winding through portion 51 is formed in a groove shape, but the winding through portion 251 of the winding nozzle 250 penetrates from the fixed end face 55 to the tip end face 56. It is configured with a hole.
　巻線ノズル２５０は、先端面５６に先端溝部２５２を備える。先端溝部２５２は、実施の形態１に係る巻線ノズル５０と同様に、巻線通し部２５１と連通しており、巻線ノズル側面５０ａに開口する溝となっている。 The winding nozzle 250 has a tip groove 252 on the tip face 56. Similarly to the winding nozzle 50 according to the first embodiment, the tip groove 252 communicates with the winding passage 251 and is a groove that opens to the winding nozzle side surface 50a.
　実施の形態２に係る巻線機２００においても、実施の形態１の巻線機１００と同様に巻線ノズル２５０を動かし、鉄心１にコイル２を形成する。巻線ノズル２５０は、実施の形態１に係る巻線ノズル５０と同様に、巻線３を鉄心１のスロット面１ｂに対し垂直方向に反らせながら巻き付けるため、コイル２を構成する巻線３の各層の間が詰まり、巻線３の密度を高くでき、巻線３の占積率が向上する。 In the winding machine 200 according to the second embodiment, the winding nozzle 250 is moved to form the coil 2 on the iron core 1 in the same manner as the winding machine 100 according to the first embodiment. Like the winding nozzle 50 according to the first embodiment, the winding nozzle 250 winds the winding 3 while warping the winding 3 in the vertical direction with respect to the slot surface 1 b of the iron core 1. The space between the windings 3 is closed, the density of the winding 3 can be increased, and the space factor of the winding 3 is improved.
　また、実施の形態２に係る巻線ノズル２５０は、巻線通し部２５１が貫通孔で構成されているため、通した巻線３が巻線通し部２５１から外れることがない。従って、巻線機２００の稼働中に巻線３が巻線ノズル２５０から外れて停止する等の不具合を抑制することができる。 In addition, in the winding nozzle 250 according to the second embodiment, since the winding through portion 251 is formed of a through hole, the passed winding 3 does not come off from the winding through portion 251. Therefore, it is possible to suppress a problem such as the winding 3 coming off from the winding nozzle 250 and stopping while the winding machine 200 is operating.
　１　鉄心、１ａ　ティース、１ｂ　スロット面、２　コイル、３　巻線、４　絶縁部、１０　固定子、３０　巻線引き出し部、３３　巻き付け部、５０　巻線ノズル、５０ａ　巻線ノズル側面、５１　巻線通し部、５１ａ　内壁面、５２　先端溝部、５２ａ　内壁面、５４　平面、５５　固定側端面、５６　先端面、５７　第１交差部、５８　第２交差部、５９　第３交差部、６０　水平移動機構、６１　ノズル保持部、６２　滑車、６３　テンショナ部、６４　コイルボビン、１００　巻線機、１０２　コイル、１３０　巻線引き出し部、１５０　巻線ノズル、１５１　巻線通し部、１５５　固定側端面、１５６　先端面、１５７　第１交差部、１５９　第３交差部、２００　巻線機、２５０　巻線ノズル、２５１　巻線通し部、２５２　先端溝部、Ａ　矢印、Ｐ　矢印、Ｑ　矢印、ｒ　自転方向、ｔ　軌跡、ｗ　隙間、θ　角度。 1 iron core, 1a tooth, 1b slot surface, 2 coil, 3 winding, 4 insulating part, 10 stator, 30 winding lead part, 33 winding part, 50 winding nozzle, 50a winding nozzle side surface, 51 winding winding Part, 51a inner wall surface, 52 tip groove portion, 52a inner wall surface, 54 flat surface, 55 fixed side end surface, 56 tip surface, 57 first intersection, 58 second intersection, 59 third intersection, 60 horizontal movement mechanism, 61 Nozzle holding part, 62 pulley, 63 tensioner part, 64 coil bobbin, 100 winding machine, 102 coil, 130 winding lead-out part, 150 winding nozzle, 151 winding passing part, 155 fixed end face, 156 tip face, 157 1 intersection, 159 ° third intersection, 200 ° winding machine, 250 ° winding nozzle, 251 ° winding passing part, 252 Tip groove, A arrows, P arrows, Q arrows, r rotation direction, t locus, w gaps, theta angle.

Claims (10)

  1. 　鉄心に巻線を巻き付けてコイルを形成する巻線機において、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側の端面である固定側端面と、
    　前記巻線が引き出される側の端面である先端面と、
    　前記固定側端面から前記先端面にわたって前記巻線が通るように形成された巻線通し部と、
    　前記巻線通し部と連通して前記先端面に溝状に形成された先端溝部と、を備える、巻線ノズル。     A winding nozzle for winding a winding around an iron core to form a coil, wherein the winding is drawn out, moves around the core, and winds the winding around the core.
    A fixed-side end surface which is an end surface attached to the nozzle holding portion of the winding machine,
    A tip end face that is an end face on the side from which the winding is drawn out,
    A winding through portion formed so that the winding passes from the fixed side end surface to the front end surface,
    And a tip groove formed in the tip face in a groove shape in communication with the winding passing portion.
  2. 　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、
    　曲面により連続した面で接続されている、請求項１に記載の巻線ノズル。     A first intersection where the inner wall surface of the winding passage portion and the inner wall surface of the tip groove portion intersect,
    The winding nozzle according to claim 1, wherein the winding nozzle is connected by a continuous surface by a curved surface.
  3. 　前記巻線通し部は、
    　前記固定側端面から前記先端面までを貫通する溝である、請求項１又は２に記載の巻線ノズル。     The winding threading part,
    The winding nozzle according to claim 1, wherein the groove is a groove penetrating from the fixed end face to the tip end face.
  4. 　前記巻線通し部は、
    　前記固定側端面から前記先端面までを貫通する穴である、請求項１又は２に記載の巻線ノズル。     The winding threading part,
    The wound nozzle according to claim 1 or 2, wherein the hole is a hole penetrating from the fixed side end surface to the front end surface.
  5. 　前記固定側端面から前記先端面までの間に配置されている巻線ノズル側面と前記先端溝部の内壁面とが交わる第２交差部は、
    　曲面により連続した面で接続されている、請求項１～４の何れか１項に記載の巻線ノズル。     A second intersection where the winding nozzle side surface disposed between the fixed side end surface and the front end surface intersects the inner wall surface of the front end groove portion,
    The winding nozzle according to any one of claims 1 to 4, wherein the winding nozzle is connected by a continuous surface by a curved surface.
  6. 　前記固定側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、
    　曲面により連続した面で接続されている、請求項１～５の何れか１項に記載の巻線ノズル。     A third intersection where the fixed-side end surface and the inner wall surface of the winding passing portion intersects,
    The winding nozzle according to any one of claims 1 to 5, wherein the winding nozzle is connected by a continuous surface by a curved surface.
  7. 　少なくとも１つの請求項１～６の何れか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水平移動機構と、を備える、巻線機。     At least one winding nozzle according to any one of claims 1 to 6,
    A nozzle holding unit that holds the winding nozzle,
    A horizontal moving mechanism for moving the nozzle holding unit in a horizontal direction.
  8. 　前記巻線ノズルは、
    　当該巻線ノズルの中心軸周りに自転自在に前記ノズル保持部に固定される、請求項７に記載の巻線機。     The winding nozzle,
    The winding machine according to claim 7, wherein the winding machine is rotatably fixed to the nozzle holding portion about a central axis of the winding nozzle.
  9. 　前記巻線ノズルの水平方向位置及び前記巻線ノズルの中心軸周りの自転角度を制御する制御装置を更に備え、
    　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為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８に記載の巻線機。     The apparatus further includes a control device that controls a horizontal position of the winding nozzle and a rotation angle around a central axis of the winding nozzle,
    The control device is
    When a portion of the winding from the tip groove of the winding nozzle to a winding portion wound around the teeth of the iron core is a winding leading portion,
    The winding machine according to claim 8, wherein the horizontal position and the rotation angle are controlled such that an angle formed between the winding lead-out portion and the extending direction of the tip groove has a constant value.
  10. 　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７～９の何れか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,
    The winding machine according to any one of claims 7 to 9, wherein the winding machine is configured to move simultaneously.
PCT/JP2018/036049 2018-09-27 2018-09-27 Winding nozzle and winding machine WO2020065853A1 (en)

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