WO2022137383A1

WO2022137383A1 - Winding machine

Info

Publication number: WO2022137383A1
Application number: PCT/JP2020/048143
Authority: WO
Inventors: 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: 2020-12-23
Filing date: 2020-12-23
Publication date: 2022-06-30
Also published as: JPWO2022137383A1; JP7466698B2

Abstract

This winding machine winds a wire around a core to form a coil and comprises: a first pulley for guiding the wire; a second pulley that is disposed separated from the first pulley, is fixed to a stationary attachment receiving portion, and rotates while the wire guided by the first pulley is wound therearound and thereby guides the wire toward the core; a winding nozzle for winding the wire around a tooth of the core in such a way that the wire guided by the second pulley is pulled out from the end surface and revolved around the core; a nozzle holding portion for holding the winding nozzle; and a drive unit for moving the nozzle holding portion in a horizontal direction. The second pulley is disposed within an upward projection region obtained by projecting upward a region inside the revolving trajectory of the winding nozzle.

Description

Winding machine

The present disclosure relates to a winding machine for manufacturing a coil, and particularly to a position of a pulley for guiding the winding.

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 winding nozzle for supplying windings and a nozzle holding portion for holding the winding nozzles. Further, the winding machine has a horizontal moving mechanism for moving the nozzle holding portion in the horizontal direction and a pair of pulleys for guiding the winding. In the winding machine, when winding the winding around the iron core, the winding is unwound from the winding nozzle attached to the nozzle holding portion that moves in the horizontal direction, and the winding is wound around the iron core. The winding machine moves the winding nozzle so that the tip of the winding nozzle orbits around the iron core around the iron core, and winds the winding around the iron core to form a coil (see, for example, Patent Document 1). ..

Although not shown in Patent Document 1, one of the pair of pulleys is fixed to the movable part of the horizontal movement mechanism. Therefore, the pulley fixed to the movable portion orbits around the iron core around the iron core together with the nozzle holding portion. On the other hand, the base, which is the fixing part of the horizontal movement mechanism, is fixed to the floor of the work room. When the moving parts are farthest from the base, the distance between the pulleys is the longest and the windings do not loosen. However, when the movable part is closest to the base, the distance between the pulleys is the shortest, and the winding may be loosened.

International Publication No. 2020/065853

As described above, the winding disclosed in Patent Document 1 has a problem that the winding is loosened due to the movement of the movable portion during the winding operation of the winding machine. When the windings are loosened, the windings are disturbed in the coil wound around the iron core.

The present disclosure has been made to solve such a problem, and an object of the present invention is to provide a winding machine capable of preventing the winding from loosening during winding operation.

The winding machine according to the present disclosure is a winding machine that winds a winding around an iron core to form a coil, and is separated from a first slide that guides the winding and the first slide. With a second pulley that is arranged, fixed to a stationary mounted portion, and guided by the first slide, the winding is wound and rotated to guide the winding toward the iron core. The winding nozzle guided by the second pulley is pulled out from the tip surface and orbits around the iron core to wind the winding around the teeth of the iron core, and holds the winding nozzle. The second A coil is placed.

According to the winding machine according to the present disclosure, it is possible to prevent the winding from loosening during the winding operation.

It is a schematic diagram which shows the whole structure of a general winding machine 300. It is explanatory drawing for demonstrating the problem in the general winding machine 300. 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. 7 is a plan view of FIG. 7. It is a top view which shows the movement of the winding nozzle 50 when wiring the crossover wire 3A to the iron core 1 by the winding machine 100 which concerns on Embodiment 1. FIG. It is an enlarged plan view which shows the locus t of the winding nozzle 50 shown in FIG. It is a top view which shows the installable area 620 of the pulley 62A of the winding machine 100 which concerns on Embodiment 1. FIG. It is explanatory drawing which shows typically the installable area 620 of the pulley 62A of the winding machine 100 which concerns on Embodiment 1. FIG. It is explanatory drawing which shows typically the installable area 620 of the pulley 62A of the winding machine 100 which concerns on Embodiment 1. FIG. It is explanatory drawing which shows the position of the point P2 in the modification 1 of Embodiment 1. FIG. It is explanatory drawing which shows the position of the point P2 in the modification 1 of Embodiment 1. FIG. It is explanatory drawing which shows the position of the point P2 in the modification 3 of Embodiment 1. FIG. It is a figure which shows the state which the winding 3 is wound around the slot surface 1b of a tooth 1a, and the coil 2 is formed. It is explanatory drawing explaining the effect of the modification 1 of Embodiment 1. FIG. It is explanatory drawing explaining the effect of the modification 1 of Embodiment 1. FIG.

Hereinafter, embodiments of the 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.

[General winding machine]
Before explaining the winding machine according to the first embodiment, a configuration of a general winding machine will be described as a comparative example with respect to the first embodiment. FIG. 1 is a schematic view showing the entire structure of a general winding machine 300. FIG. 2 is an explanatory diagram for explaining a problem in a general winding machine 300.

As shown in FIG. 1, the winding machine 300 has a winding nozzle 350, a nozzle holding portion 361 to which the winding nozzle 350 is attached, a horizontal moving mechanism 360 for moving the nozzle holding portion 361 in the horizontal direction, and winding. It is equipped with a pair of

pulleys

362A and 362B that guide the line 3. Further, the winding machine 300 includes a tensioner portion 363 for adjusting the tension of the winding 3 and a winding bobbin 364 in which the winding 3 is stored. Here, the pulley 362A is a pulley arranged on the nozzle holding portion 361 side, and the pulley 362B is a pulley arranged on the tensioner portion 363 side.

As shown in FIG. 1, the movable portion 365 of the horizontal movement mechanism 360 moves horizontally in the X direction and the Z direction of FIG. 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. The pulley 362A is fixed to the movable portion 365. Therefore, the pulley 362A moves horizontally together with the movable portion 365. As the movable portion 365 moves, the winding nozzle 350 orbits around the teeth 1a of the iron core 1, so that the winding 3 is wound around the slot surface 1b of the iron core 1.

It is assumed that the movable portion 365 moves from the state shown in FIG. 2 (a) to the state shown in FIG. 2 (b). In FIG. 2B, the length of the winding 3 in the state of FIG. 2A is defined as the length L1, and the length of the winding 3 in the state of FIG. 2B is defined as the length L2. do. The lengths L1 and L2 are the lengths of the windings 3 from the point A to the point B in each of the states of FIG. 2A and the state of FIG. 2B. Point A is a certain point on the teeth 1a of the iron core 1, and point B indicates the highest position on the outer circumference of the pulley 362A in the state of FIG. 2B. It is assumed that the relationship between the length L1 and the length L2 of the winding 3 is L1 = L2 or L1> L2.

As shown in FIGS. 2A and 2B, the base 370, which is the fixing portion of the horizontal movement mechanism 360, is fixed to the floor of the work room. In the state shown in FIG. 2A, the movable portion 365 is located at the position farthest from the base 370. At this time, the distance between the pulley 362A and the pulley 362B becomes the longest. In this state, the winding 3 is not slackened.

However, when the state shown in FIG. 2 (a) is changed to the state shown in FIG. 2 (b), the distance between the pulley 362A and the pulley 362B becomes the shortest. In the state shown in FIG. 2B, the movable portion 365 is at the position closest to the base 370. At this time, if the relationship between the length L1 and the length L2 of the winding 3 is L1 = L2, the winding 3 may not be loosened, but if L1> L2, the winding is once wound. Since the winding 3 pulled out from the bobbin 364 does not return to the winding bobbin 364, slack occurs in the winding 3. If the winding operation of winding the winding 3 around the slot surface 1b of the iron core 1 is performed while the winding 3 is slackened, the coil is disturbed.

[Winding machine according to the first embodiment]
Embodiment 1.
The winding machine according to the first embodiment is for preventing the occurrence of slack in the winding during the winding operation and suppressing the winding disorder of the coil. FIG. 3 is a schematic view showing the overall structure of the winding machine 100 according to the first embodiment. FIG. 4 is a plan view showing an example of the structure of the stator 10 used in an electric motor or the like. FIG. 5 is a side view of the stator 10 shown in FIG. FIG. 5 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. 6). The winding machine 100 forms the coil 2 by winding the winding 3 around the iron core 1 constituting the stator 10.

As shown in FIG. 3, the iron core 1 has a teeth 1a and a slot surface 1b. However, in FIG. 3, 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. 4, 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. 5, 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. 9) 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. 7, 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. 4 is formed.

FIG. 6 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. 6 shows an example in which the electric 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 (see FIG. 5) 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.

Next, the configuration of the winding machine 100 will be described. As shown in FIG. 3, the winding machine 100 includes a winding nozzle 50, a nozzle holding portion 61 to which the winding nozzle 50 is attached, a drive unit 60 for moving the nozzle holding portion 61 in the horizontal direction, and winding. It is equipped with a pair of

pulleys

62A and 62B that guide 3. 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 winding bobbin 64 is arranged on the floor 80 of the work room, for example. The winding bobbin 64 stores the winding 3 inside.

The tensioner portion 63 is arranged between the winding bobbin 64 and the pulley 62B. The tensioner portion 63 adjusts the tension of the winding 3 supplied from the winding bobbin 64.

The pulley 62B (first pulley) is wound with the winding 3 supplied from the winding bobbin 64 and whose tension is adjusted by the tensioner portion 63. The pulley 62B guides the winding 3 by rotating around the rotation shaft 62b (first rotation shaft). The pulley 62B may be fixed to a support column fixed to the floor 80, or may be fixed to a stationary mounted portion such as a ceiling 81. The installation location of the pulley 62B is not particularly limited.

The pulley 62A (second pulley) is arranged away from the pulley 62B. The pulley 62A is fixed to a stationary mounted portion such as a ceiling 81. The mounting position of the pulley 62A is not limited to the ceiling 81, and may be mounted on another mounted portion such as a wall of a work room. The winding 3 guided by the pulley 62B is wound around the pulley 62A. The pulley 62A rotates around the rotation shaft 62a (second rotation shaft) to guide the winding 3 to the nozzle holding portion 61 so that the winding 3 faces the iron core 1.

The nozzle holding portion 61 fixes the fixed side end surface, which is one end of the winding nozzle 50, and holds the winding nozzle 50. The nozzle holding portion 61 is horizontally moved by the movable portion 71 of the drive unit 60 in the X direction and the Z direction of FIG. 3, 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.

The winding nozzle 50 has, for example, a cylindrical outer shape. One end of the winding nozzle 50 in the longitudinal direction is the above-mentioned fixed side end surface, and the other end is the tip surface from which the winding 3 is drawn out. The winding nozzle 50 has a winding through portion 51 (see FIG. 7) through which the winding 3 is passed from the fixed side end surface to the tip surface. The winding threading portion 51 is composed of a through hole penetrating from the fixed side end surface to the tip surface. Alternatively, the winding through portion 51 may be formed on the side surface of the winding nozzle 50 and may be composed of a groove extending from the fixed side end surface to the tip surface. The winding nozzle 50 orbits around the teeth 1a (see FIG. 8) of the iron core 1 to wind the winding 3 drawn out from the tip surface around the slot surface 1b of the iron core 1. A coil 2 (see FIG. 5) is formed from the wound winding 3.

The drive unit 60 has a base 70 which is a fixed part and a movable part 71 which is provided on the base 70 so as to be horizontally movable. The base 70, which is a fixed portion of the drive unit 60, is fixed to the floor 80 of the work room. A nozzle holding portion 61 is fixed to the movable portion 71. As the movable portion 71 moves horizontally, the nozzle holding portion 61 moves horizontally.

As described above, in the first embodiment, at least one of the pair of

pulleys

62A and 62B, the pulley 62A, is fixed to the stationary attached portion such as the ceiling 81 of the work room. The pulley 62A is a pulley arranged on the nozzle holding portion 61 side, and the pulley 62B is a pulley arranged on the winding bobbin 64 side. In the general winding machine 300 shown in FIG. 1, the pulley 362A is fixed to the movable portion 365, but in the embodiment, the pulley 62A is fixed to the ceiling 81 as shown in FIG. This point is different from the general winding machine 300. Therefore, in the first embodiment, the pulley 62A does not move together with the nozzle holding portion 61, but is fixed at the same position on the ceiling 81 and is stationary.

The winding 3 is pulled out from the winding bobbin 64, passes through the tensioner portion 63, and is wound around the pair of

pulleys

62B and 62A in order. In the tensioner portion 63, the tension of the winding 3 is adjusted. Further, the pair of

pulleys

62B and 62A guide the winding 3 in order. The windings 3 guided by the pair of

pulleys

62B and 62A are 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. The winding 3 is wound around the slot surface 1b of the teeth 1a by rotating around the teeth 1a while the winding nozzle 50 rotates. Further, the winding machine 100 includes a control device 75, and the control device 75 includes at least a mechanism for driving the drive unit 60, a mechanism for adjusting the tension of the tensioner portion 63, and a mechanism for rotating the winding nozzle 50. Control.

Here, the hardware configuration of the control device 75 will be described. The control device 75 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 75 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. 7 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. 8 is a plan view of FIG. 7. In the first embodiment, as shown in FIGS. 7 and 8, 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. 7, 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 threading portion 51 is composed of, for example, a through hole penetrating the entire length of the winding nozzle 50 in the longitudinal direction.

As shown in FIG. 7, in the first embodiment, the winding machine 100 is provided with three winding nozzles 50. As shown in FIG. 8, 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. 7, 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 of the winding nozzle 50 in the direction of the rotation direction r in FIG. The locus t shown in FIG. 8 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 counterclockwise rotation is shown in FIG. 8, the rotation direction r may be in the opposite direction (that is, clockwise).

FIG. 9 is a plan view showing the movement of the winding nozzle 50 when wiring the crossover wire 3A to the iron core 1 by the winding machine 100 according to the first embodiment. As described with reference to FIGS. 7 and 8, 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. 8, 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. 9, 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. 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. 9, 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.

FIG. 10 is an enlarged plan view showing the locus t of the winding nozzle 50 shown in FIG. In FIG. 10, for the sake of explanation, the teeth 1a portion is hatched. As shown in FIG. 10, the winding nozzle 50 orbits in the direction of the arrow D2 along the locus t so as to draw a substantially rectangular shape around the teeth 1a of the iron core 1, and is wound around the slot surface 1b of the iron core 1. Wrap 3 around.

FIG. 11 is a plan view showing an installable area 620 of the pulley 62A of the winding machine 100 according to the first embodiment. In FIG. 11, for the sake of explanation, the installable area 620 is hatched. 12 and 13 are explanatory views schematically showing an installable area 620 of the pulley 62A of the winding machine 100 according to the first embodiment. As shown in FIG. 11, the installable region 620 of the pulley 62A is a region inside the locus t of the winding nozzle 50. More specifically, the installable area 620 of the pulley 62A is an upward projection area in which the area inside the locus t of the winding nozzle 50 is projected upward as shown in FIGS. 12 and 13. In the first embodiment, the pulley 62A is installed at an arbitrary position in the installable area 620. That is, the pulley 62A may be installed in the position in the X direction and the position in the Z direction within the installable area 620 in the range defined by the X axis and the Z axis shown in FIG. 11 and may be installed in the position in the Y axis direction (that is, the position in the Y axis direction). , In the height direction) is not particularly limited. As described above, the pulley 62A is fixed to the ceiling 81 and is always in a stationary state.

At this time, it is assumed that the state A shown in FIG. 12 has changed to the state B shown in FIG. In FIG. 13, the length of the winding 3 in the state A is the length L3, and the length of the winding 3 in the state B is the length L4. The lengths L3 and L4 are the lengths of the windings 3 from the point P1 to the point P2 in each of the states A and B. The point P1 is a certain point of the teeth 1a of the iron core 1. The point P1 is a point indicating a portion of the teeth 1a that is farthest from the base 70. The point P2 is a point on the outer circumference of the pulley 62A, which is a point where the winding wire 3 hung on the pulley 62A separates from the pulley 62A. That is, the point P2 is the "separation point of the winding 3 from the pulley 62A" (first point). In the first embodiment, the pulley 62A is arranged in the installable area 620 and the point P2 is arranged in the installable area 620, so that the relationship between the length L3 and the length L4 of the winding 3 is determined. L3 <L4.

As shown in FIGS. 12 and 13, the base 70, which is the fixing portion of the drive unit 60, is fixed to the floor 80 of the work room. In the case of the state A shown in FIG. 12, the nozzle holding portion 61 is at the position farthest from the base 70. In this state, the winding 3 does not slacken.

When the state of the winding machine 100 shifts from the state A shown in FIG. 12 to the state B shown in FIG. 13, in the case of the state B shown in FIG. 13, the nozzle holding portion 61 is at the position closest to the base 70. Become. At this time, since the relationship between the length L3 and the length L4 of the winding 3 is L3 <L4, the winding 3 does not loosen. As described above, in the first embodiment, the pulley 62A is arranged in the installable area 620 and the point P2 is arranged in the installable area 620, so that the length of the winding 3 is formed in the state B. The relationship between L3 and the length L4 is L3 <L4. Therefore, in both the state A and the state B, the winding 3 does not always slacken, so that the occurrence of winding disorder can be suppressed.

[Modification 1 of Embodiment 1]
14 and 15 are explanatory views showing the positions of points P2 in the first modification of the first embodiment. As shown in FIGS. 14 and 15, the center point of the installable area 620 of the pulley 62A is set as the center point C. Hereinafter, as shown in FIG. 14, the central axis extending in the longitudinal direction of the installable area 620, that is, in the Z direction is referred to as a central axis 91. Further, as shown in FIG. 14, the central axis extending in the lateral direction of the installable area 620, that is, in the X direction is referred to as a central axis 92. The center point C of the installable area 620 is a point where the center axis 91 and the center axis 92 intersect. Further, as shown in FIG. 15, the central axis that passes through the central point C and extends in the Y direction is referred to as a central axis 93.

In the first modification of the first embodiment, as shown in FIG. 15, the point P2 is arranged on the central axis 93. That is, the point P2 is arranged at a position corresponding to the center point C shown in FIG. In FIG. 15, for convenience, the center point C and the point P2 are shown shifted in the Y direction for the sake of clarity, but the position of the point P2 in the Y direction is not particularly limited, so FIG. 15 In, the position of the center point C and the position of the point P2 may naturally coincide with each other.
In the first modification of the first embodiment, the winding point P2, which is the “separation point away from the pulley 62A of the winding wire 3”, is arranged so as to be aligned with the center point C of the installable area 620. The occurrence of slack in the winding wire 3 during operation can be further prevented as compared with the first embodiment.

Here, the effect of the modification 1 of the first embodiment will be described with reference to FIGS. 18 and 19. 18 and 19 are explanatory views illustrating the effect of the first modification of the first embodiment. FIG. 19 is a partially enlarged view of FIG.

As shown in FIGS. 18 and 19, the line segment connecting the position of the inlet portion 61a of the nozzle holding portion 61 and the point P2 is defined as a line segment La. Further, the circle centered on the point P2 and having the length of the line segment La as the radius is defined as the circle R2. As described above, the point P2 is arranged on the central axis 93.

Further, as shown by the arrow in FIG. 19, the point where the point P2 is shifted in the X direction is referred to as the point P2-1. As shown in FIG. 19, the point P2-1 is arranged on the straight line 93-1. The straight line 93-1 is a straight line obtained by translating the central axis 93 in the X direction. Further, as shown in FIGS. 18 and 19, the line segment connecting the position of the inlet portion 61a of the nozzle holding portion 61 and the point P2-1 is referred to as a line segment Lb. Further, a circle centered on the point P2-1 and having a radius of the length of the line segment Lb is defined as a circle R2-1.

Since the point P2 and the point P2-1 have the same position in the Y direction, they are arranged together on the straight line 97 as shown in FIG. Further, the straight line 98 passes through the position of the inlet portion 61a of the nozzle holding portion 61 and is a straight line parallel to the straight line 97. As shown in FIG. 19, the distance between the straight line 97 and the straight line 98 is the length of the line segment Lc. Both the straight line 97 and the straight line 98 are orthogonal to the central axis 93.

In the first modification of the first embodiment, since the point P2 is arranged so as to coincide with the center point C of the installable area 620, the winding 3 on the two dimensions defined by the X-axis and the Y-axis The amount of slack ΔL1 is ΔL1 = (length of line segment La) − (length of line segment Lc).

On the other hand, in the case of the point P2-1 that does not coincide with the center point C, the slack amount ΔL2 of the winding 3 on the two dimensions defined by the X-axis and the Y-axis is ΔL2 = (length of the line segment Lb)-. (Length of line segment Lc).

Here, as can be seen from FIGS. 18 and 19, since (length of line segment Lb)> (length of line segment La), the relationship between the slack amounts ΔL1 and ΔL2 of the winding 3 is ΔL1 <. It becomes ΔL2. Therefore, the closer the position of the point P2 is to the center point C, the smaller the amount of slack in the winding 3. Therefore, in the first modification of the first embodiment, the position of the point P2 coincides with the center point C. From the above, it is desirable that the point P2 is arranged in the installable area 620 as described in the first embodiment, but further, as shown in the modification 1 of the first embodiment, the point P2 It can be seen that it is more desirable that the is arranged in the center C of the installable area 620. In the above description, the case where the point P2-1 is shifted from the point P2 in the X direction has been described as an example, but the case where the point P2-1 is shifted in the Z direction is a modification of the first embodiment. This will be described in Example 3.

[Modification 2 of Embodiment 1]
As shown in FIG. 14, the center point of the teeth 1a coincides with the center point C of the installable area 620 of the pulley 62A. Therefore, the point P2 may be arranged at an upward projection position of the center point of the teeth 1a. Needless to say, the same effect can be obtained even in that case.

As shown in FIG. 14, the teeth 1a has a rectangular shape or a substantially rectangular shape in a plan view. At this time, the central axis extending in the longitudinal direction of the teeth 1a coincides with the central axis 91 in FIG. Further, the central axis extending in the lateral direction of the teeth 1a coincides with the central axis 92 in FIG. Therefore, in the example of FIG. 14, the center point of the teeth 1a is the center point C. In the second modification of the first embodiment, by arranging the point P2 in alignment with the center point of the teeth 1a, it is possible to prevent the winding 3 from being loosened during the winding operation.

[Modification 3 of Embodiment 1]
FIG. 16 is an explanatory diagram showing the position of the point P2 in the modification 3 of the first embodiment. In FIG. 16, the points C1 and C2 are points arranged at arbitrary positions on the central axis 91. In FIGS. 14 and 15 above, the case where the point P2 is arranged at the position corresponding to the center point C shown in FIG. 14 has been described. In the modification 3 of FIG. 16, the point P2 is arranged at the position corresponding to the point C1 or the point C2 shown in FIG. That is, in the modification 3, the case where the point P2 is shifted from the center point C in the Z direction will be described.

As shown in FIG. 3, the pulley 62B and the pulley 62A are arranged side by side along the X direction (first horizontal direction). That is, the arrangement direction of the pulley 62B and the pulley 62A is the X direction. As shown in FIG. 16, the central axis 91 is an axis extending in the Z direction (second horizontal direction) orthogonal to the X direction. Therefore, in the modification of FIG. 16, the central axis of the teeth 1a in which the point P2 extends in the Z direction (second horizontal direction) orthogonal to the arrangement direction (first horizontal direction) of the pulley 62B and the pulley 62A. It is arranged on the upper projection line of 91. As described above, in the modified example of FIG. 16, the point P2, which is the “separation point away from the pulley 62A of the winding 3”, is arranged at an arbitrary position of the central shaft 91 along the central shaft 91 of the teeth 1a. , It is possible to prevent the winding 3 from being loosened during the winding operation. Also in the modified example 3 of the first embodiment, as described in the modified example 1 of the first embodiment described above, the winding 3 is arranged at the center C of the installable area 620 at the point P2. It is more desirable because the amount of slack in the slack is further reduced.

As described above, in the first embodiment and the modified examples 1 to 3 thereof, the upward projection area in which the area inside the circular locus t of the winding nozzle 50 is projected upward is set as the installable area 620. There is. In the first embodiment, the pulley 62A is arranged in the installable area 620. As a result, when the winding machine 100 shifts from the state A shown in FIG. 12 to the state B shown in FIG. 13, the state B is more than the length L3 of the winding 3 from the point P1 to the point P2 in the state A. Since the length L4 of the winding 3 from the point P1 to the point P2 is long, the winding 3 does not always loosen. If the winding 3 is not loosened during the winding operation of the winding machine 100, the coil 2 is not disturbed.

FIG. 17 is a diagram showing a state in which the winding 3 is wound around the slot surface 1b of the teeth 1a to form the coil 2. In FIG. 17, arrow 95 corresponds to the X direction of FIG. 3 and arrow 96 corresponds to the Y direction of FIG. As shown in FIG. 17, in the coil 2, the first layer surface is wound around the slot surface 1b, and the second layer is wound around the outside of the first layer. Further, the third layer is wound on the outside of the second layer. If the coil 2 is not disturbed, the alignment of the coil 2 is improved. Further, the gap w between the slot surface 1b shown in FIG. 17 and the first layer of the coil 2 is reduced. Similarly, in the second and subsequent layers, the gap between the windings 3 is reduced, the density of the windings 3 is increased, and the space factor of the coil 2 is improved. As a result, the performance of the electric motor 20 is improved.

Further, as shown in FIG. 15, the point P2 which is the “separation point away from the pulley 62A of the winding wire 3” may be arranged so as to be aligned with the center point C of the installable area 620 or the center point of the teeth 1a. In that case, as described with reference to FIGS. 18 and 19, the occurrence of slack in the winding 3 can be further prevented.

1 iron core, 1a teeth, 1b slot surface, 2 coil, 3 winding, 3A crossover wire, 4 U side insulator, 5 L side insulator, 10 stator, 11 rotor, 12 rotating shaft, 20 electric motor, 50 winding nozzle , 51 winding threading part, 60 drive unit, 61 nozzle holding part, 61a inlet part, 62A slide (second slide), 62B slide (first slide), 62a rotation shaft (second rotation shaft), 62b Rotating shaft (first rotating shaft), 63 tensioner part, 64 winding bobbin, 70 base (fixed part), 71 moving part, 75 control device, 80 floor, 81 ceiling (attached part), 90 arrow, 91 Central axis, 92 central axis, 93 central axis, 95 arrow, 96 arrow, 100 winding machine, 200 compressor, 200a housing, 200b compression mechanism, 200c suction port, 200d discharge port, 300 winding machine, 350 winding Nozzle, 360 horizontal movement mechanism, 361 nozzle holding part, 362A slide, 362B slide, 363 tensioner part, 364 winding bobbin, 365 movable part, 370 base, 620 installable area (upward projection area), A state, B state , C center point, D1 arrow, D2 arrow, P1 point, P2 point (first point), r rotation direction, t locus, w gap.

Claims

A winding machine that winds a winding around an iron core to form a coil.
The first pulley that guides the winding,
The windings are arranged apart from the first pulley, fixed to the mounted portion in a stationary state, and the windings guided by the first pulley are wound and rotated to roll the windings. The second pulley that guides you toward the iron core,
The winding nozzle guided by the second pulley is pulled out from the tip surface and orbits around the iron core to wind the winding around the teeth of the iron core.
A nozzle holding portion that holds the winding nozzle and
A drive unit for moving the nozzle holding portion in the horizontal direction is provided.
The second pulley is arranged in the upward projection area in which the area inside the orbital locus of the winding nozzle is projected upward.
Winding machine.
When the point on the outer circumference of the second pulley, which is the separation point where the winding is separated from the second pulley, is defined as the first point,
The first point is located within the upward projection area.
The winding machine according to claim 1.
The first point is located at the center point of the upward projection area.
The winding machine according to claim 2.
When the point at which the central axis in the longitudinal direction of the iron core and the central axis in the lateral direction orthogonal to the longitudinal direction intersect is defined as the center point of the teeth.
The first point is arranged at an upward projection position of the center point of the teeth.
The winding machine according to any one of claims 1 to 3.
When the first pulley and the second pulley are arranged side by side along the first horizontal direction.
The first point is arranged on an upward projection line of the central axis of the teeth extending in the second horizontal direction orthogonal to the first horizontal direction.
The winding machine according to any one of claims 1 to 3.