JP6747732B1 - Work holding jig and winding machine - Google Patents

Abstract

A work holding jig and a winding machine according to an aspect of the present disclosure perform a crossover wiring work even when a height of a work is large or a width of the work is small. A work holding jig according to an aspect of the present disclosure is configured to hold a work, and includes a holding body portion and a plurality of wire rod support portions. The holding body is formed in a tubular shape having an open end for arranging the work. The holding main body portion is configured to hold the work in a state of covering the first opening end and exposing the second opening end. Each of the plurality of wire rod support portions is configured to protrude radially inward from the cylindrical inner surface of the holding body portion. Each of the plurality of wire rod support portions is configured to support the wire rod wound around the work. [Selection diagram] Fig. 9

Description

The present disclosure relates to a work holding jig and a winding machine.

A winding machine for winding a wire material for forming a coil around a work is known. The winding machine includes a work holding jig configured to hold a work and a nozzle that supplies a wire to the work (see Patent Document 1).

The work includes, for example, a tubular yoke portion that extends from the first opening end to the second opening end, and a plurality of poles that project radially inward from the tubular inner surface of the yoke portion. In the work in which the wire is wound by the winding machine, the wire wound around each of the plurality of poles is provided as a plurality of coils. The work is configured such that the end portion of the wire rod is arranged at the first opening end, and the connecting wire which is a wire rod connecting the plurality of coils is arranged at the second opening end.

The winding machine inserts a nozzle from the first opening end into the inside of the work to perform a coil winding work for winding the wire rod around each of the plurality of poles. In addition, the winding machine moves the nozzle inserted from the first opening end to the outside of the work from the second opening end, and executes the crossover arranging work for arranging the crossover.

When performing the crossover arranging work, there is proposed a technique for executing the crossover arranging work by arranging the tip of the nozzle at an appropriate position at the second opening end by inclining the angle of the nozzle. (See Patent Document 1).

JP, 2006-0887258, A

However, the above winding machine may not be able to secure a sufficient space for arranging the nozzles depending on the shape and configuration of the work. For example, for a work having a small height dimension from the first opening end to the second opening end, the tip of the nozzle can be arranged at an appropriate position at the second opening end, but the height dimension is large. In the processed work, there is a possibility that the tip of the nozzle cannot be arranged at an appropriate position at the second opening end.

That is, for example, when the size of the work holding jig does not change, as the height of the work increases, the work is held with the second opening end arranged in the narrow space. In this case, the space where the nozzle can be arranged around the second opening end becomes narrow, and when the nozzle is arranged at the second opening end, the range in which the nozzle angle can be adjusted becomes narrow. Therefore, in the above winding machine, when the height of the work becomes large, the tip of the nozzle cannot be arranged at an appropriate position at the second opening end, and there is a possibility that the crossover wiring work cannot be performed.

Further, in a work having a small size in the width direction perpendicular to the height direction (hereinafter, also referred to as width size), since the width size of the work itself is small, the nozzle can be arranged around the second opening end. The space becomes smaller. Even in such a work, when the nozzle is arranged with respect to the second opening end, the range in which the angle of the nozzle can be adjusted becomes narrow. Therefore, in the above winding machine, when the width dimension of the work becomes small, the tip of the nozzle cannot be arranged at an appropriate position at the second opening end, and there is a possibility that the crossover wiring work cannot be performed.

Therefore, it is desirable that the work holding jig and the winding machine according to the one aspect of the present disclosure can perform the crossover wiring work even when the height of the work is large or the width of the work is small.

A work holding jig according to one aspect of the present disclosure is configured to hold a work, and includes a holding main body portion and a plurality of wire rod support portions.
The work is configured such that a wire for forming a coil is wound around the work. The work includes a yoke portion and a plurality of poles. The yoke portion is formed in a tubular shape extending from the first opening end to the second opening end. Each of the plurality of poles is configured to protrude radially inward from the cylindrical inner surface of the yoke portion. A wire wound around each of the plurality of poles is provided as a plurality of coils. The work is configured such that the end of the wire is arranged at the first opening end and the crossover is arranged at the second opening end. The crossover wire is a wire rod that connects a plurality of coils.

The holding body is formed in a tubular shape having an open end for arranging the work. The holding body portion is configured to hold the work in a state of covering the first opening end and exposing the second opening end. Each of the plurality of wire rod support portions is configured to protrude radially inward from the cylindrical inner surface of the holding body portion. Each of the plurality of wire rod support portions includes a wire rod contact portion that comes into contact with the wire rod wound around the work. Each of the plurality of wire rod support portions is configured to support the wire rod at the wire rod contact portion.

Since this work holding jig can hold the work with the second opening end exposed to the outside of the work holding jig, the work for arranging the crossover wire with respect to the second opening end (hereinafter, also referred to as the crossover wire arranging work) Can be easily performed. That is, when this work holding jig is used, the crossover line arranging work can be performed on the second opening end by using a wider space than in the case where the second opening end is arranged in a narrow space. ..

Further, since this work holding jig is provided with a plurality of wire rod support portions, the wire rod pulled out from the first opening end is supported by one of the plurality of wire rod support portions in the middle of the winding operation of the wire rod around the work. be able to. That is, by using this work holding jig, the work of pulling out the wire from the first opening end of the work can be executed.

Therefore, according to this work holding jig, it is possible to pull out the wire from the first opening end of the work with respect to the work having a large height dimension from the first opening end to the second opening end, and The crossover arrangement work can be performed at the two opening ends. Further, according to this work holding jig, the wire rod can be pulled out from the first opening end of the work with respect to the work having a small width dimension perpendicular to the height direction, and the crossover wire can be drawn at the second opening end of the work. Placement work can be performed.

In the above work holding jig, each of the plurality of wire rod supporting portions may include a movable portion and a fixed portion. The movable part may include a wire rod contact part and be configured to change its posture. The fixed portion is configured to come into contact with the movable portion and limit a change in posture of the movable portion.

The movable portion may be configured such that the posture of the movable portion changes between a first posture and a second posture. The first posture is a posture in which the support of the wire rod at the wire rod contact portion is maintained. The second posture is a posture in which the wire rod is released from the wire rod contact portion.

Each of the plurality of wire rod support portions may be configured to switch between a first state and a second state. The first state is a state in which the posture of the movable portion is limited to the first posture, and the fixed portion is in contact with the movable portion. The second state is a state in which the fixed portion is arranged at a position different from the first state so that the movable portion can freely change its posture between the first posture and the second posture.

In this work holding jig, the wire rod supporting portion is in the first state during the work of winding the wire rod around the workpiece, so that the wire rod supporting portion can maintain the wire rod pulled out from the first opening end. In addition, the work holding jig changes the state of the wire rod supporting portion from the first state to the second state after the work of winding the wire rod around the workpiece, so that the wire rod supported by the wire rod supporting portion is changed. The work on which the wire winding operation has been completed can be removed from the holding body.

In the above work holding jig, the fixed portion may be configured to switch between the first state and the second state by linearly moving so that the relative position to the movable portion changes. The fixed contact surface of the fixed portion that contacts the movable portion may be formed as an inclined surface that is inclined with respect to the direction of linear movement.

Since the fixed contact surface is formed as the inclined surface in this way, the fixed portion and the movable portion are less likely to be fixed in the first state, as compared with the case where the fixed contact surface is parallel to the linear movement direction. Become. Therefore, since the fixed contact surface is formed as the inclined surface, the work of separating the fixed portion from the movable portion can be smoothly performed when the state of the wire rod support portion is switched from the first state to the second state.

The work holding jig may include a wire rod cutting unit that cuts a wire rod arranged so as to connect the plurality of wire rod supporting units to the work.
This work holding jig is designed to support a plurality of wire rods supported by the wire rods by cutting the wire rods that connect the plurality of wire rod support portions and the work by using the wire rod cutting portion after the wire rods are wound around the work pieces. The connection state between the part and the work can be eliminated, and the work can be removed from the holding body.

The workpiece holding jig may include an auxiliary supporting portion configured to project radially inward from the cylindrical inner surface of the holding body. The auxiliary support portion is formed in a region between the plurality of wire rod support portions on the cylindrical inner surface. Further, the auxiliary support portion is formed on the inner surface of the cylinder such that a portion of the auxiliary support portion that comes into contact with the wire is closer to the opening end than the wire rod contact portion of the wire support portion.

In this work holding jig, when the wire rod is arranged between the plurality of wire rod support portions, the auxiliary support portion supports the wire rod, so that the loosening of the wire rod can be suppressed. As a result, when the wire W is wound around the work, it is possible to prevent the arrangement of the wire from becoming inappropriate.

In the above work holding jig, the holding main body is configured to hold the work in a state where the first opening end is arranged vertically below and the second opening end is arranged vertically above. Good. By holding the work in this state, the work holding jig can secure a wide space in which the nozzles can be arranged around the second opening end.

Next, a winding machine according to another aspect of the present disclosure is configured to wind a wire material for forming a coil around a work. The winding machine may include a work holding jig and a release operation machine. The work holding jig may be any of the above work holding jigs, and may be a work holding jig including a movable portion and a fixed portion. The release operating device may be configured to switch each of the plurality of wire rod support portions from the first state to the second state.

Since this winding machine includes any one of the above work holding jigs, like the above work holding jigs, a work having a large height from the first opening end to the second opening end is The wire rod can be pulled out from the first opening end of the work, and the crossover wire arranging work can be performed at the second opening end of the work. Further, this winding machine can pull out the wire from the first opening end of the work with respect to the work having a small width dimension perpendicular to the height direction, like the work holding jig described above. The crossover arranging work can be executed at the second opening end.

The winding machine may further include a nozzle. The nozzle is configured to supply the wire material to the work. The winding machine may further include a nozzle holder. The nozzle holder is configured to hold the nozzle. The winding machine may further include a nozzle rotation unit. The nozzle rotation unit is configured to rotate the nozzle holder.

It is the whole side view of the winding machine of a 1st embodiment. It is the whole winding machine front view of a 1st embodiment. It is the whole top view of the winding machine of a 1st embodiment. It is a front side perspective view of a work holding jig and a nozzle rotation unit. It is a perspective view of a nozzle holder, a work, and a work holding jig. FIG. 4 is a cross-sectional view showing the internal structure of the work holding part in a state of being cut along the AA cross section shown in FIG. 3, and is a cross-sectional view of the work holding part in a state of holding a work when viewed obliquely from above. FIG. 3 is a cross-sectional view showing the internal structure of the work holding part in a state of being cut along the BB cross section shown in FIG. 2, and is a cross-sectional view of the work holding part when viewed obliquely from above. It is explanatory drawing showing the cross section of the workpiece holding part in the state cut|disconnected by the BB cross section shown in FIG. 2, and the external appearance of the release operation part. It is explanatory drawing which shows the 1st state and 2nd state of a wire rod support part. It is explanatory drawing showing the operation|work which forms the drawing-out part of a wire rod using a wire rod support part and an auxiliary support part. It is explanatory drawing showing the workpiece|work in which the drawing-out part of the wire was formed. It is an explanatory view of a nozzle and a nozzle holder which hold a wire.

Hereinafter, embodiments to which the present disclosure is applied will be described with reference to the drawings.
It is needless to say that the present disclosure is not limited to the following embodiments, and various forms can be adopted within the technical scope of the present disclosure.

[1. First Embodiment]
[1-1. overall structure]
As shown in FIG. 1, FIG. 2 and FIG. 3, the winding machine 100 of the present embodiment is configured to wind the coil forming wire W around the work 6.

As shown in FIG. 5, the work 6 of the present embodiment includes an inner core type multi-pole including a yoke portion Y forming an outer periphery and a plurality of poles C protruding inward in the radial direction from the yoke portion Y. It is an armature. In other words, the work 6 is configured such that the coil forming wire W is wound.

The yoke portion Y is a tubular member extending from the first opening end 6a to the second opening end 6b. Each of the plurality of poles C is configured to protrude radially inward from the inner cylindrical surface of the yoke portion Y. The work 6 includes a plurality of connecting wire projections 6c. The plurality of connecting wire projections 6c are provided upright on the second opening end 6b of the yoke portion Y. Further, the work 6 is provided with a positioning groove 6d on the outer peripheral surface of the work 6. The positioning groove 6d is formed so as to extend parallel to the height direction of the work 6. The height direction of the work 6 is a direction parallel to the direction from the first opening end 6a to the second opening end 6b. The width direction of the work 6 is a direction perpendicular to the height direction of the work 6. The work 6 includes a plurality of positioning grooves 6d. The plurality of positioning grooves 6d are formed at different positions in the circumferential direction on the outer peripheral surface of the work 6, respectively.

As shown in FIGS. 1, 2 and 3, the winding machine 100 includes a first base 1, a second base 2, an indexing rotation motor 4, a nozzle driving motor 5, a work holding section 40, and a nozzle rotation. The unit 70 is provided. The nozzle rotation unit 70 includes a nozzle 3, a nozzle holder 60 (hereinafter, also referred to as a nozzle bracket 60), and a unit main body 700. The nozzle 3 is configured to hold the wire material W for forming the coil. The nozzle holder 60 is configured to hold the nozzle 3. The unit main body 700 is configured to rotate the nozzle holder 60. The unit main body 700 is fixed to the linear block 25 via the connecting plate 24.

The first base 1 and the second base 2 are fixed to a main base (not shown). The first base 1 is configured to fix the indexing rotation motor 4 in a non-rotatable manner. The index rotation motor 4 and the nozzle drive motor 5 are drive devices and rotation drive mechanisms.

The index rotation motor 4 is configured to generate a driving force for rotating the work 6. An output shaft (not shown) of the index rotation motor 4 is connected to a spindle shaft 33 that is a rotating shaft. The spindle shaft 33 is connected to the work holding unit 40. The work holding unit 40 includes a clamp mechanism 41 and a positioning protrusion 43. The work holding unit 40 is configured to fix the work 6 by the clamp mechanism 41 and the positioning protrusion 43. Therefore, when the rotational driving force of the index rotation motor 4 is transmitted to the work holding unit 40, the work 6 fixed to the work holding unit 40 rotates. As the work 6 rotates in this manner, the relative position of the work 6 with respect to the nozzle holder 60 is changed.

The nozzle driving motor 5 is configured to generate a driving force for moving the nozzle holder 60. The movement direction of the nozzle holder 60 includes, for example, a straight line movement in the vertical direction parallel to the vertical direction. The nozzle driving motor 5 is fixed to the support member 12.

The support member 12 is fixed to the left and right moving unit 16. The left and right moving unit 16 includes a linear guide 19. The linear guide 19 is configured to move along the linear rail 20. The linear rail 20 is fixed to the front-rear moving frame 14.

The left-right moving unit 16 is configured to move in the left-right direction with respect to the work 6 by moving the linear guide 19 along the linear rail 20. The winding machine 100 includes a horizontal movement motor 21 for moving the horizontal movement unit 16. The “horizontal direction with respect to the work 6 ”here is the horizontal direction when the winding machine 100 is viewed from the front side. In other words, the “left-right direction with respect to the work 6” is the direction from the back side to the front side of the drawing or the direction from the front side to the back side of the drawing in FIG. 1. The "left-right direction with respect to the work 6" is the left-right direction of the drawing in FIG. The “horizontal direction with respect to the work 6” is the vertical direction of the drawing in FIG.

The rotational driving force output from the left-right movement motor 21 is converted from a rotational movement into a linear movement by the ball screw device 22a (see FIG. 3) via the coupling 22 to drive the left-right movement unit 16 to linearly move. Become power. That is, the left and right moving unit 16 is configured to change the relative position of the left and right moving unit 16 in the left and right direction with respect to the work 6 by moving along the linear rail 20 by the driving force of the left and right moving motor 21. ..

The front-rear moving frame 14 includes a linear guide 13. The linear guide 13 is configured to move along the linear rail 15. The linear rail 15 is fixed to the second base 2. The linear rail 15 is arranged in a direction orthogonal to the linear rail 20. In other words, the linear rail 15 is arranged along the front-back direction with respect to the work 6. The "front-back direction with respect to the work 6" is the front-back direction when the winding machine 100 is viewed from the front side. In other words, the "front-back direction with respect to the work 6" is the left-right direction of the drawing in FIG. The "front-back direction with respect to the work 6" is the direction from the back side to the front side of the drawing or the direction from the front side to the back side of the drawing in FIG. The "front-back direction with respect to the work 6" is the left-right direction of the drawing in FIG.

The front-rear moving frame 14 is configured to move in the front-rear direction with respect to the work 6 as the linear guide 13 moves along the linear rail 15. The winding machine 100 includes a front-rear moving motor 17 for moving the front-rear moving frame 14. The rotational driving force output from the front-rear movement motor 17 is converted from a rotational movement into a linear movement by a ball screw device (not shown) via the coupling 18 and a driving force for linearly moving the front-rear movement frame 14. Become. The ball screw device is a rod-shaped member arranged parallel to the linear rail 15 and has a groove formed on the outer surface thereof. That is, the front-rear moving frame 14 is configured to be able to change the distance between the front-rear moving frame 14 and the work 6 by moving along the linear rail 15 by the driving force of the front-rear moving motor 17.

The nozzle rotating unit 70 is fixed to the connecting plate 24 with screws or the like. The connecting plate 24 is fixed to the linear block 25 with screws or the like. The linear block 25 is configured to move along the linear rail 23. The linear rail 23 is fixed to the support member 12. The linear rails 23 are arranged in a direction (vertical direction in FIG. 1) orthogonal to each of the linear rails 15 and the linear rails 20. In other words, the linear rails 23 are arranged along the vertical direction (the vertical direction in FIG. 1) with respect to the work 6. Therefore, the nozzle rotation unit 70 is configured to move in the vertical direction with respect to the work 6 by the linear block 25 moving along the linear rail 23.

The "vertical direction with respect to the work 6" here is the vertical direction when the winding machine 100 is viewed from the front side. In other words, the "vertical direction with respect to the work 6" is the vertical direction of the drawing in FIG. The "vertical direction with respect to the work 6" is the vertical direction in the drawing in FIG. In FIG. 3, the “vertical direction with respect to the work 6” is the direction from the back side to the front side of the drawing, or the direction from the front side to the back side of the drawing.

The nozzle driving motor 5 is configured to generate a driving force for vertically moving the nozzle rotation unit 70. The rotary driving force output from the nozzle driving motor 5 is converted from a rotary motion to a linear motion via a pulley (not shown) and a timing belt (not shown), and a driving force for linearly moving the linear block 25. Become. That is, the linear block 25 is configured to be able to change the vertical position relative to the work 6 by moving along the linear rail 23 by the driving force of the nozzle driving motor 5. The nozzle rotating unit 70 is fixed to the linear block 25 via the connecting plate 24, and moves up and down by the driving force of the nozzle driving motor 5 so as to change the vertical relative position with respect to the work 6. To do.

As shown in FIG. 3, in the present embodiment, the front-rear direction is defined as the movement of the front-rear moving frame 14 with respect to the work 6 and the direction in which the front-rear moving frame 14 moves along the linear rail 15. After the work 6 (see FIG. 5) before winding is fixed to the work holding portion 40 by an operator, the work 6 and the nozzle rotating unit 70 (specifically, the nozzle holding tool 60) are moved back and forth so as to approach each other. By moving the moving frame 14 in the front-rear direction, the work of winding the work 6 by the winding machine 100 becomes possible. The moving direction of the front-rear moving frame 14 and the nozzle rotating unit 70 at this time is the "front moving direction" in FIG.

Further, after the winding work on the work 6 by the winding machine 100 is completed, the front-rear moving frame 14 is moved in the front-rear direction so as to separate the work 6 from the nozzle rotation unit 70 (specifically, the nozzle holder 60). By moving, the work 6 can be removed from the work holding unit 40. The moving direction of the front-rear moving frame 14 and the nozzle rotating unit 70 at this time is the "rear moving direction" in FIG.

Similarly, the left-right direction is defined as the direction in which the two works 6 are arranged. In other words, the left-right direction is the extension direction of the line connecting the center points of the two works 6. The nozzle feeding direction in the winding work of the work 6 is parallel to the left-right direction. The nozzle feed direction is a moving direction when the nozzle 3 is moved by a predetermined pitch dimension (for example, a thickness dimension of the wire W) every time the wire W is wound around the pole C of the work 6 once. The nozzle feed direction is the direction along the central axis of the pole, and is the radial direction of the work 6.

The work holding unit 40 includes a work placement unit 40a configured to place the work 6. The nozzle 3 can be arranged inside the work 6 by moving a part of the nozzle holder 60 into the work 6 with respect to the work 6 arranged in the work arrangement portion 40 a.

As shown in FIG. 3, the nozzle feeding direction is set so as to intersect (for example, orthogonally) the front moving direction and the rear moving direction. At this time, the nozzle feed direction is the left-right direction as seen from the worker who performs the work supply work and the work take-out work. The nozzle feed direction is parallel to the arrangement direction of the two works 6. By setting the nozzle feed direction in this way, it becomes easy for an operator who performs the work supply work and the work take-out work to visually check the nozzle 3, and it is easy to check the winding state of the work 6. The "arrangement direction of the two works 6" means the direction connecting the center points of the two works 6 (in other words, the left-right direction) in the plan view of Fig. 3 (viewing the axial direction of the works 6). ).

The winding machine 100 of the present embodiment is configured to wind the wire W around two works 6 at the same time. That is, the winding machine 100 is a double-type winding machine including the two nozzles 3. The winding machine 100 includes two nozzles 3, an indexing rotation motor 4, a nozzle holder 60, a nozzle rotation unit 70, and the like.

[1-2. Nozzle rotation unit]
Next, the nozzle rotation unit 70 will be described. As shown in FIG. 4, the winding machine 100 includes two nozzle rotating units 70.

As shown in FIGS. 4 to 5, the nozzle rotation unit 70 includes a nozzle holder 60, a nozzle 3, and a unit body 700. The unit main body 700 is configured to rotate the nozzle holder 60. As described above, the unit main body 700 is fixed to the linear block 25 via the connecting plate 24.

The unit main body 700 includes a rotating shaft 71, a drive actuator 72, and a connecting arm 73. The rotating shaft 71 is configured to be connected to the nozzle holder 60. The drive actuator 72 includes an air cylinder that expands and contracts. The connecting arm 73 is a member that connects the end portion 72 a of the drive actuator 72 and the rotating shaft 71. The drive actuator 72 is configured to rotate the rotating shaft 71 via the connecting arm 73.

The unit main body 700 can switch the rotation position of the rotation shaft 71 to one of two different positions by switching the drive actuator 72 to the extended state or the shortened state. As a result, the unit main body 700 can switch the nozzle holder 60 to either of the winding state and the line processing state. The winding state is the state of the nozzle holder 60 in the winding process. The line processing state is the state of the nozzle holder 60 in the line processing step.

The rotating shaft 71 is arranged such that the axial direction is parallel to the front-rear direction and the axial direction is orthogonal to the left-right direction. In other words, the rotary shafts 71 are arranged orthogonal to the arrangement direction of the two works 6. The feed direction of the nozzle 3 by the nozzle rotating unit 70 is set parallel to the arrangement direction of the two works 6 corresponding to the two nozzles 3.

The nozzle rotation unit 70 is configured to change the relative position between the nozzle 3 and the workpiece 6 by changing the rotation position of the nozzle holder 60 to one of the following two states. The two states are the winding state and the wire treatment state.

Here, the relative position between the nozzle holder 60 and the work 6 shown in FIG. 5 is the relative position in the winding state. In the winding state, the rotation position of the nozzle holder 60 is set so that the tip of the nozzle 3 faces the inner peripheral surface of the work 6.

Although illustration is omitted, the relative position between the nozzle holder 60 and the workpiece 6 in the line processing state is when the nozzle holder 60 shown in FIG. 5 rotates 90° counterclockwise about the rotation shaft 71. It is a relative position. That is, in the line processing state, the rotational position of the nozzle holder 60 is set so that the tip of the nozzle 3 faces the upper end surface of the workpiece 6 held by the workpiece holder 40.

The winding state is a state in which the wire W is wound around each pole C of the work 6. In the winding state, the movement trajectory of the nozzle 3 relative to the work 6 has a trajectory in which the circumferential direction component and the thickness direction component are combined. The circumferential component is a movement component of the relative movement components between the work 6 and the nozzle 3, which changes as the work 6 rotates in the circumferential direction by the work holding unit 40. The thickness direction component is a movement component that changes when the work 6 or the nozzle holder 60 moves in the thickness direction of the work 6 (in other words, the vertical direction) among the relative movement components of the work 6 and the nozzles 3. Is.

In the winding state, the nozzle 3 can move in the circumferential direction of the work 6 above or below the pole C to be wound by moving relative to the work 6 along the circumferential direction component. .. The nozzle 3 moves relative to the workpiece 6 along the thickness direction component so as to move through the gap (slot) formed between the pole C to be wound and the pole C adjacent thereto. You can By appropriately combining and performing the relative movement of the circumferential direction component and the relative movement of the thickness direction component, it is possible to perform the operation in which the nozzle 3 goes around the pole C. Thereby, the nozzle 3 can wind the wire W around the pole C.

The line processing state is a state in which the wire W is arranged on the upper end surface of the work 6 held by the work holding portion 40. In other words, in the line processing state, the nozzle 3 arranged at a position different from the winding state by the rotation of the rotating shaft 71 is used, and the wire W is applied to a portion of the work 6 different from the plurality of poles C. It is in a state of being arranged.

The nozzle 3 is set to the line processing state or the winding state by rotating around the rotation shaft 71 together with the nozzle holder 60. That is, the nozzle 3 and the nozzle holder 60 change the posture with respect to the work 6 by transitioning between the winding state and the line processing state. Therefore, the nozzle 3 and the nozzle holder 60 have different postures with respect to the work 6 depending on the winding state and the line processing state.

The work 6 includes a yoke portion Y and a plurality of poles C. The yoke portion Y is a tubular member extending from the first opening end 6a to the second opening end 6b. Each of the plurality of poles C is configured to protrude radially inward from the inner cylindrical surface of the yoke portion Y. The work 6 includes a plurality of connecting wire projections 6c. The plurality of connecting wire projections 6c are provided upright on the second opening end 6b of the yoke portion Y.

The work 6 is held by the work holding portion 40 in a state in which the first opening end 6a is on the lower side and the second opening end 6b is on the upper side. At this time, any one of the plurality of positioning grooves 6d is fitted to the positioning protrusion 43. By winding the wire W around the work 6, the wire W wound around each of the plurality of poles C is provided as a plurality of coils Wc (see FIG. 11 ). In the work 6, the end of the wire W is arranged at the first opening end 6a, and the crossover Wt (see FIG. 11), which is the wire W connecting the plurality of coils Wc, is arranged at the second opening 6b. Is configured. The crossover Wt is a wire W that connects the plurality of coils Wc.

The nozzle 3 in the line processing state is rotated 90° counterclockwise about the rotation shaft 71 as compared with the nozzle 3 in the winding state (see FIG. 5). In the line processing state, the relative movement state of the nozzle 3 with respect to the work 6 includes a plurality of movement states. Examples of the plurality of moving states include a bridging state and a entwined state. In the suspended state, the nozzle 3 is attached to the work 6 so that the wire W is suspended as the transition wire Wt with respect to the transition wire projection 6c provided upright on the second opening end 6b of the work 6. It is a state of relative movement. The entangled state is a state in which another type of work (not shown) having a different configuration from the work 6 of the present embodiment can be used. The other-type work includes, for example, a binding pin that is provided upright at the second opening end. The entangled state is a state in which the nozzle 3 relatively moves with respect to the work of another type so that the wire W is entangled with the entanglement pin of the work of another type.

In addition, although this embodiment demonstrates using the workpiece|work 6 which is not equipped with the binding pin, the winding machine 100 is not limited to such a workpiece|work 6 and other types of workpieces equipped with the binding pin. The wire W can be entangled in the bent state.

The winding machine 100 is configured to switch a winding process, a wire processing process, and a drawing portion forming process in a series of operations (a series of processes) for winding the wire W around the work 6. In the winding process and the drawing portion forming process, the relative position between the nozzle 3 and the work 6 is set to the winding state. In the line processing step, the relative position between the nozzle 3 and the work 6 is set to the line processing state. The winding machine 100 is configured to switch between the winding state and the line processing state by rotating the nozzle holder 60 with the rotation of the rotating shaft 71.

In the winding state, by moving the nozzle 3 and/or the work 6 in the circumferential direction and the thickness direction of the work 6, respectively, the nozzle 3 is relatively orbitally moved with respect to each of the plurality of poles C. The wire W is wound around each of the poles C. The winding state is also used when the nozzle 3 is moved to the outside of the first opening end 6a of the work 6 and the wire W is arranged so as to connect the work 6 and a wire support portion 44 described later. It is also in a state of being. The line processing state is a state in which the wire W is arranged at a portion different from the plurality of poles C by using the nozzle 3 arranged at a position different from the winding state by the rotation of the rotating shaft 71.

[1-3. Nozzle holder]
Next, the nozzle holder 60 (nozzle bracket 60) will be described.
As shown in FIG. 5, the nozzle holder 60 is configured to hold the nozzle 3 and be connected to the rotating shaft 71.

The nozzle holder 60 includes a nozzle arm portion 601 and a connecting arm portion 603. The nozzle arm portion 601 includes a first nozzle arm portion 601a and a second nozzle arm portion 601b. The connecting arm portion 603 includes a first connecting arm portion 603a, a second connecting arm portion 603b, and a third connecting arm portion 603c.

As shown in FIGS. 5 and 12, the first nozzle arm portion 601a includes a nozzle fixing portion 601a1, a pulley 601a2, and two screw holes 601a3. The nozzle fixing portion 601a1 is a through hole configured to fix the nozzle 3. The nozzle 3 includes an insertion hole 3a that penetrates from the first end to the second end in the longitudinal direction. The pulley 601a2 is provided as a guide member for positioning the wire W supplied to the nozzle 3. Each of the two screw holes 601a3 is configured to be screwed with the first fixing screw 611.

As shown in FIG. 5, the second nozzle arm 601b is an elongated member extending from the first end to the second end. The second nozzle arm 601b is configured to be connected to the first nozzle arm 601a at a first end and to be connected to the connecting arm 603 (specifically, the first connecting arm 603a) at a second end. There is. The first nozzle arm 601a and the second nozzle arm 601b are connected to each other by two first fixing screws 611 (see FIG. 12) screwed into the two screw holes 601a3. The second nozzle arm 601b and the connecting arm 603 are connected to each other by the second fixing screw 612.

That is, the nozzle arm 601 is configured to be connected to the connecting arm 603 while holding the nozzle 3.
Next, the first connecting arm portion 603a is a long member that extends from the first end to the second end. The first connection arm portion 603a is configured to be connected to the nozzle arm portion 601 (specifically, the second nozzle arm portion 601b) at a first end and to be connected to the second connection arm portion 603b at a second end. There is.

The second connecting arm portion 603b includes a long portion extending from the first end to the second end, and a connecting portion extending from the second end of the long portion in a direction orthogonal to the longitudinal direction of the long portion. .. The second connecting arm portion 603b is configured to be connected to the first connecting arm portion 603a at the first end of the elongated portion and to be connected to the third connecting arm portion 603c at the connecting portion. The first connecting arm portion 603a and the second connecting arm portion 603b are connected to each other by two third fixing screws 613. The second connecting arm portion 603b and the third connecting arm portion 603c are connected to each other by two fourth fixing screws 614.

The third connection arm portion 603c is a long member that extends from the first end to the second end. The third connecting arm portion 603c includes a shaft connecting portion 603c1 in a region closer to the second end than the first end in the longitudinal direction. The shaft connecting portion 603c1 is provided as a through hole configured to insert a part of the rotating shaft 71. The third connecting arm portion 603c is configured to be connected to the second connecting arm portion 603b at the first end and to be connected to the rotating shaft 71 at the shaft connecting portion 603c1. The third connecting arm portion 603c and the rotating shaft 71 are connected to each other by four fifth fixing screws 615. The third connecting arm portion 603c rotates about the rotation shaft 71 in response to the rotation of the rotation shaft 71.

As described above, the connecting arm portion 603 includes the shaft connecting portion 603c1 and is configured to be connected to the nozzle arm portion 601. The connecting arm portion 603 is configured to connect the nozzle arm portion 601 and the rotating shaft 71 in a state where the nozzle fixing portion 601a1 and the shaft connecting portion 603c1 are separated from each other.

When connected to the connecting arm 603, the nozzle arm 601 is configured to extend in a direction parallel to an imaginary plane perpendicular to the axial direction of the rotating shaft 71. In other words, under the condition that the nozzle holder 60 is connected to the rotating shaft 71, the nozzle arm portion 601 is arranged in a state of being extended in a direction parallel to the virtual plane.

The nozzle holder 60 configured as described above includes a portion (in other words, the third connecting arm portion 603c) extending in the first direction D1 with the end portion connected to the rotating shaft 71 as a starting point. The first direction D1 is a direction parallel to an imaginary plane perpendicular to the axial direction of the rotating shaft 71 and also parallel to the extending direction of the nozzle arm 601. The nozzle holder 60 includes a portion (in other words, a part of the second connecting arm portion 603b) extending in the second direction D2 from the end of the third connecting arm portion 603c as a starting point. The second direction D2 is a direction that is perpendicular to the axis of the rotating shaft 71 in the connecting arm portion 603 and is not parallel to the first direction D1. The nozzle holder 60 is a portion extending in the third direction D3 with a part of the second connecting arm 603b as a starting point (in other words, another part of the second connecting arm 603b and the first connecting arm 603b). 603a). The third direction D3 is a direction parallel to the axis of the rotating shaft 71 of the connecting arm portion 603. The nozzle holder 60 includes a portion (in other words, the nozzle arm portion 601) extending from the first connecting arm portion 603a as a starting point in the first direction D1. As shown in FIG. 5, in the nozzle holder 60, the tip of the nozzle 3 is arranged on the extension line L1 of the rotary shaft 71 (specifically, the extension line L1 of the central axis of the rotary shaft 71). ,It is configured.

The first direction D1 and the second direction D2 are both parallel to an imaginary plane perpendicular to the axial direction of the rotating shaft 71. However, the first direction D1 and the second direction D2 are not parallel to each other but different directions.

The nozzle holder 60 extends from the shaft coupling portion 603c1 in a direction away from the rotation shaft 71 along the first direction D1, and extends from the rotation shaft 71 in the second direction D2 to rotate from there. It is formed so as to extend in a third direction D3 parallel to the shaft 71 and to extend in a direction approaching the extension line L1 of the rotating shaft 71 along the first direction D1. Accordingly, the nozzle holder 60 is configured so that the tip of the nozzle 3 can be arranged on the extension line L1 of the rotating shaft 71.

As shown in FIG. 12, the nozzle holder 60 is configured to position the wire W by the pulley 601a2 and supply the wire W to the insertion hole 3a of the nozzle 3. The wire W supplied to the insertion hole 3a is inserted from the rear end of the insertion hole 3a toward the tip. Thereby, the nozzle 3 is configured to supply the wire W to the work 6 from the tip of the nozzle 3 (in other words, the tip of the insertion hole 3a).

[1-4. Work holding part (work holding jig)]
Next, the work holding unit 40 will be described.
As shown in FIGS. 5 to 8, the work holding section 40 includes two clamp mechanisms 41, a holding body section 42, a positioning convex section 43, a plurality of wire rod supporting sections 44, and a plurality of auxiliary supporting sections 46. And

FIG. 6 is a cross-sectional view of the work holding unit 40 in a state of being cut along the AA cross section shown in FIG. FIG. 7 is a cross-sectional view of the work holding unit 40 in a state of being cut along the BB cross section shown in FIG. FIG. 8 is a cross-sectional view of the work holding unit 40 in a state cut along the BB cross section shown in FIG. 8 is an explanatory view showing an external view of the release operation part 50 in addition to the sectional view of the work holding part 40.

The holding main body 42 is a tubular member having an open end 42a in which the work 6 is placed. The open end 42a is formed at the upper end of the holding body 42 in the vertical direction. The holding body portion 42 includes a plurality of side surface openings 42b on the cylindrical side surface. The holding body portion 42 includes an annular support portion 42c inside. The annular support portion 42c is fixed to the inner surface of the holding body portion 42. The annular support portion 42c is configured to support the work 6 inserted into the holding body portion 42 from the opening end 42a.

As shown in FIG. 5, the two clamp mechanisms 41 are provided on the outer peripheral surface of the holding body 42, respectively. The clamp mechanism 41 includes an elongated clamp member 41a. The clamp member 41a is pivotally supported by a clamp shaft 41b. The clamp member 41a includes an operation end portion 41c at a first end in the longitudinal direction and a work contact portion 41d at a second end in the longitudinal direction. When the user operates the two clamp members 41a so that each of the two operation end portions 41c approaches the holding body portion 42, the two clamp members 41a rotate about the two clamp shafts 41b. The work contact portions 41d are configured to have a large distance. In this way, the work 6 can be inserted into the opening end 42 a of the holding body 42 by increasing the distance between the two work contact portions 41 d. After that, when the operation of the operation end portion 41c by the user is completed, the distance between the two work contact portions 41d becomes small, and the work 6 between the two work contact portions 41d and the annular support portion 42c. Is retained. The space between the two work contact portions 41d and the annular support portion 42c in the inner space of the holding body 42 is the work placement portion 40a.

The positioning protrusion 43 is fixed to the upper portion of the holding body 42. The positioning protrusion 43 is configured to include a protrusion protruding radially inward of the holding body 42. The protrusion of the positioning protrusion 43 is sized to fit into the positioning groove 6d of the work 6. When the work 6 is placed in the work placement portion 40a, any one of the plurality of positioning grooves 6d is fitted to the positioning projection 43. Accordingly, it is possible to prevent the relative displacement between the work holding portion 40 and the work 6 in the circumferential direction from occurring.

As shown in FIG. 5, the work 6 is inserted into the holding main body 42 from the opening end 42a with the first opening end 6a being on the lower side and the second opening end 6b being on the upper side. The work placement unit 40a of 40 is placed. That is, the holding body portion 42 is configured to hold the work 6 while covering the first opening end 6a and exposing the second opening end 6b.

As shown in FIGS. 5 to 8, the plurality of wire rod support portions 44 are arranged in the circumferential direction of the holding body portion 42 in the lower region of the holding body portion 42, respectively. The work holding part 40 of the present embodiment includes six wire rod support parts 44.

As shown in FIGS. 6 and 7, each of the plurality of wire rod support portions 44 includes a movable portion 44a, a fixed portion 44b, and an elastic portion 44c.
The movable portion 44a includes a wire rod contact portion 44a1 that contacts the wire rod W. The movable portion 44a is configured to rotate by being pivotally supported by the rotation shaft 44a2. The movable portion 44a is configured to change the posture of the movable portion 44a by rotating about the rotating shaft 44a2. The movable portion 44a includes a fixed contact portion 44a3 that contacts the fixed portion 44b.

As shown in FIG. 9, in the movable portion 44a, the movable portion 44a has a first posture in which the wire rod W is supported by the wire rod contact portion 44a1, and the wire rod W is released from the wire rod contact portion 44a1. It is configured to change to a second posture.

In each of the plurality of wire rod support portions 44, when the movable portion 44a is in the first posture, a part of the movable portion 44a protrudes from the cylindrical inner surface of the holding body portion 42 inward in the radial direction of the holding body portion 42. Is configured. Each of the plurality of wire rod support portions 44 is configured to support the wire rod W wound around the work 6 by the wire rod contact portion 44a1 when the movable portion 44a is in the first posture.

The fixed portion 44b includes a fixed contact surface 44b1 that contacts the fixed contact portion 44a3 of the movable portion 44a. The fixed portion 44b is configured to limit a change in the posture of the movable portion 44a by coming into contact with the movable portion 44a. The fixed portion 44b is configured to linearly move in parallel to an axial direction (hereinafter, also referred to as a linear movement direction DF1) from the upper end portion to the lower end portion of the work holding portion 40. The fixed portion 44b is configured to linearly move so that the relative position to the movable portion 44a changes, so that the state of the fixed portion 44b is switched between the first state and the second state.

The first state of the fixed portion 44b is a state in which the posture of the movable portion 44a is limited to the first posture, and the fixed portion 44b is in contact with the movable portion 44a. Specifically, the first state of the fixed portion 44b is a state in which the fixed contact surface 44b1 of the fixed portion 44b contacts the fixed contact portion 44a3 of the movable portion 44a. Since the fixed contact surface 44b1 contacts the fixed contact portion 44a3, the fixed portion 44b can limit the change in posture of the movable portion 44a, and as a result, the posture of the movable portion 44a is limited to the first posture. ..

The second state of the fixed portion 44b is a state in which the fixed portion 44b is arranged at a position different from the first state so that the movable portion 44a can freely change its posture between the first posture and the second posture. Specifically, the second state of the fixed portion 44b is a state in which the fixed contact surface 44b1 of the fixed portion 44b is separated from the fixed contact portion 44a3 of the movable portion 44a. The fixed contact surface 44b1 is separated from the fixed contact portion 44a3, so that the movable portion 44a can freely change its posture. As a result, the movable portion 44a is in a state in which it can freely change its posture between the first posture and the second posture.

The elastic portion 44c is configured to apply a biasing force to the fixed portion 44b in the direction toward the movable portion 44a (in other words, the upward direction of the linear movement direction DF1). The elastic portion 44c is configured to exert a biasing force by elastically deforming so that the length dimension of the elastic portion 44c becomes large. The elastic portion 44c is composed of, for example, a spring.

That is, the state where the fixed portion 44b moves upward due to the biasing force of the elastic portion 44c and the fixed contact surface 44b1 contacts the fixed contact portion 44a3 of the movable portion 44a is the first state of the wire rod support portion 44. .. The state in which the fixed portion 44b moves downward due to the urging force from the release operation portion 50 and the fixed contact surface 44b1 is separated from the fixed contact portion 44a3 of the movable portion 44a is the second state of the wire rod support portion 44. is there.

The winding machine 100 is provided with four release operation parts 50 as shown in FIGS. The release operation part 50 is configured to switch each of the plurality of wire rod support parts 44 from the first state to the second state.

Each of the four release operation parts 50 includes a plurality of pressing parts 50a. The plurality of push-down portions 50a are formed at positions corresponding to the push-down contact portions 44b2 of the fixed portion 44b. By moving each of the four release operation parts 50 downward, the plurality of push-down parts 50a move the corresponding plurality of fixed parts 44b downward while making contact with the corresponding plurality of push-down contact parts 44b2. Let Thereby, each of the plurality of wire rod support portions 44 is changed from the first state to the second state, and the movable portion 44a is changed to the second posture. In this way, the release operation part 50 is configured to switch each of the plurality of wire rod support parts 44 from the first state to the second state.

It should be noted that by moving the four release operation parts 50 upward, the plurality of pressing parts 50a are separated from the corresponding plurality of pressing contact parts 44b2, and the plurality of fixing parts 44b are elastic parts. It moves upward due to the biasing force of 44c. As a result, each of the plurality of wire rod support portions 44 changes from the second state to the first state, and the movable portion 44a is limited to the first posture.

In this way, each of the plurality of wire rod support portions 44 is configured to switch between the first state and the second state. The first state of the wire rod support portion 44 is a state in which the movable portion 44a is in the first posture and the fixed portion 44b is in contact with the movable portion 44a. The second state of the wire rod support portion 44 is a state in which the fixed portion 44b is separated from the movable portion 44a and the movable portion 44a can change its posture from the first posture to the second posture.

The fixed contact surface 44b1 is not a surface parallel to the linear movement direction DF1 of the fixed portion 44b, but is formed as an inclined surface inclined with respect to the linear movement direction DF1. In FIG. 9, the extension line of the fixed contact surface 44b1 is shown by a dotted line, and it can be seen that the fixed contact surface 44b1 is an inclined surface inclined with respect to the linear movement direction DF1. Specifically, the fixed abutment surface 44b1 is an inclined surface having a shape that becomes more distant from the central axis L2 of the work holding unit 40 as it goes upward from the lower side in the vertical direction of the work holding unit 40.

In this way, the fixed contact surface 44b1 is formed as an inclined surface, so that the fixed portion 44b and the movable portion 44a are in the first state in the first state, as compared with the case where the fixed contact surface 44b1 is a parallel surface with respect to the linear movement direction DF1. It becomes difficult to adhere to. Therefore, since the fixed contact surface 44b1 is formed as an inclined surface, when the state of the wire rod support portion 44 is switched from the first state to the second state, the work of separating the fixed portion 44b from the movable portion 44a is smoothly performed. it can.

As shown in FIGS. 6 to 8, each of the plurality of auxiliary support portions 46 is configured to project radially inward from the cylindrical inner surface of the holding body portion 42. The auxiliary support portion 46 includes an extension portion 46a and a plate-shaped portion 46b. The extending portion 46 a extends from the cylindrical inner surface of the holding body portion 42 toward the radially inner side of the holding body portion 42. The plate-like portion 46b is formed in a plate-like shape extending above the holding body 42 at the end of the extending portion 46a.

Each of the plurality of auxiliary support portions 46 is formed in a region between the plurality of wire rod support portions 44 in the circumferential direction of the cylindrical inner surface of the holding body portion 42. In other words, the wire rod support portions 44 and the auxiliary support portions 46 are alternately arranged in the circumferential direction of the holding body portion 42. Further, in each of the plurality of auxiliary support portions 46, a portion of the auxiliary support portion 46 that abuts the wire W on the cylindrical inner surface of the holding body portion 42 is an open end more than the wire rod abutting portion 44a1 of the wire rod support portion 44. It is formed so as to be located near 42a. Specifically, the portion of the extended portion 46a that abuts the wire W is formed closer to the opening end 42a than the wire abutting portion 44a1 of the wire supporting portion 44.

Moreover, as shown in FIGS. 6 to 9, one of the plurality of wire rod supporting portions 44 includes a wire rod binding portion 44a4 and a binding groove portion 44a5. The wire-entangled portion 44a4 is configured to project at the end of the movable portion 44a. The entanglement groove portion 44a5 is formed in a groove shape having a size such that the wire W can be arranged at the end portion of the movable portion 44a.

When the wire W is wound around the work 6, the wire entanglement portion 44a4 and the entanglement groove portion 44a5 are provided to first fix the tip of the wire W. That is, first, the tip end of the wire W can be fixed to the wire entanglement portion 44a4 by disposing the tip of the wire W in the entanglement groove portion 44a5 and then winding the wire W around the wire entanglement portion 44a4. In this operation, the winding machine 100 changes the relative position between the nozzle 3 and the work holding unit 40 (specifically, the wire entanglement portion 44a4), and the nozzle 3 relative to the wire entanglement portion 44a4. It is realized by controlling the movement locus of. A portion of the tip of the wire W (drawing portion Wp described later), which is arranged in the entwining groove portion 44a5, is provided as a bent portion Wp1 as shown in FIG. 11, for example.

When winding the wire W around the work 6, the winding machine 100 first entangles and fixes the tip of the wire W with the wire entanglement portion 44a4 of the wire rod support portion 44, and thereafter, the winding step and the wire treatment. By performing the process, the drawn-out portion forming process, and the like, a series of processes for winding the wire W around the required portion of the work 6 is performed. After the series of steps is performed, the terminal end of the wire W (lead-out part Wp described later) is cut, so that the terminal part Wp2 is formed, for example, as shown in FIG. 11.

[1-5. Drawing section formation process]
The winding machine 100 is configured to execute a drawing portion forming step in addition to the winding step and the wire processing step as a step for winding the wire W around the work 6.

The lead-out portion forming step is a step of forming the lead-out portion Wp which is a part of the wire W. The lead-out portion Wp is composed of the wire W drawn from the first opening end 6 a of the work 6. The lead-out portion Wp is connected to the wire W (coil Wc) wound around the pole C of the work 6.

In the drawing part forming step, the winding machine 100 forms the drawing part Wp of the wire W by moving the nozzle 3 along a predetermined movement locus with the nozzle holder 60 set to the winding state. Is configured. Specifically, the winding machine 100 performs a winding process to wind the wire W around one pole C of the work 6 to form the coil Wc, and then sets the nozzle holder 60 in the winding state. The lead-out portion forming step is performed to form the lead-out portion Wp.

In the drawing-out portion forming step, the winding machine 100 loads the wire rod W onto the wire rod contact portion 44a1 of the wire rod support portion 44, the extended portion 46a of the auxiliary support portion 46, and another wire rod support portion as shown in FIG. After the wire rod contact portion 44a1 of the portion 44 is hooked in this order, the movement state (movement locus) of the nozzle 3 is controlled so that the wire rod W is arranged from the wire rod support portion 44 to the other pole C of the work 6. At this time, the wire rod W that is in contact with the wire rod support portion 44 is disposed in the slightly recessed wire rod contact portion 44a1, so that the wire rod W is prevented from falling off from the wire rod support portion 44. Further, the wire rod W that abuts on the extended portion 46a of the auxiliary support portion 46 abuts on the plate-shaped portion 46b, so that the wire rod W is prevented from falling off the auxiliary support portion 46.

Such a work holding unit 40 can suppress the looseness of the wire W by supporting the wire W with the auxiliary support 46 when the wire W is arranged between the plurality of wire support units 44. .. Accordingly, when the wire rod W is arranged on the work 6, the winding machine 100 can suppress the arrangement state of the wire rod W on the work 6 from becoming inappropriate.

Note that, when the drawing portion forming step is executed, the winding machine 100 sets the wire rod support portion 44 to the first state (see FIG. 9). Accordingly, the wire rod support portion 44 can maintain the same posture (first posture) even when the external force from the wire rod W is applied as the nozzle 3 moves. As a result, it is possible to suppress the occurrence of slack in the wire W wound around the work 6 when the drawing portion forming step is executed.

The winding machine 100 executes the necessary steps such as the winding step and the wire treatment step in accordance with the type and configuration of the work 6 after the drawing portion forming step is completed, so that the wire rod W can be applied to the necessary portion of the work 6. Is configured to carry out a series of steps of winding. Thereby, with respect to the work 6 held by the work holding portion 40, from the coil Wc of the pole C (see FIG. 11 ), the crossover wire Wt (see FIG. 11) in the crossover wire projection 6 c, and the first opening end 6 a. The drawn-out portion Wp (see FIG. 11) and the like are formed.

Note that the winding machine 100 may be configured to be able to form the plurality of lead portions Wp by performing the lead portion forming step a plurality of times depending on the configuration of the work 6. The winding machine 100 of the present embodiment is configured to form four lead-out parts Wp for one work 6.

In this way, after the wire W is placed on the work 6 held by the work holding unit 40, the winding machine 100 includes a plurality of release operation units so that the plurality of fixing units 44b move downward. By controlling 50, the plurality of wire rod support portions 44 are set to the second state (see FIG. 9). Accordingly, the movable portion 44a of the plurality of wire rod support portions 44 can change its posture. At this time, when the user lifts the work 6 from the work disposing portion 40a, the movable portion 44a is rotated by the external force from the drawing portion Wp to be in the second state shown in FIG. As a result, the wire rod support portion 44 is in a state where the lead-out portion Wp can be released from the wire rod contact portion 44a1 of the wire rod support portion 44. When the wire rod support portion 44 is set to the second state, the user can remove the work 6 wound with the wire rod W from the work holding portion 40 of the winding machine 100.

The work 6 removed from the winding machine 100 is in a state in which a plurality of lead-out portions Wp are formed, as shown in FIG. 11, for example. Then, the plurality of lead-out portions Wp become, for example, six lead-out portions Wp when cut at the positions of the dotted lines S1, respectively. As a result, the work 6 can be used as a multi-pole armature (specifically, a three-pole armature) having six lead-out parts Wp.

The cutting position of the lead-out portion Wp is not limited to the position of the dotted line S1 and may be, for example, the position of the dotted line S2. In this case, the six drawing portions Wp have shorter projecting dimensions (drawing dimensions) from the work 6 than in the case of cutting along the dotted line S1. Therefore, the cutting positions may be changed according to the required dimensions of the six lead portions Wp.

[1-6. effect]
As described above, the winding machine 100 includes the work holding unit 40 and the nozzle 3.
Since the work holding unit 40 can hold the work 6 with the second opening end 6b exposed to the outside of the work holding unit 40, a work of arranging the crossover Wt with respect to the second opening end 6b (crossover arranging work) ) Can be performed easily. That is, when the work holding unit 40 is used, the crossover line arranging work is performed on the second opening end 6b by using a wider space than when the second opening end 6b is arranged in a narrow space. it can.

Further, since the work holding unit 40 includes the plurality of wire rod support portions 44, the wire rod W pulled out from the first opening end 6 a is not included in the plurality of wire rod support portions 44 in the middle of the winding operation of the wire rod W around the work 6. Can be supported by either. That is, by using the work holding portion 40, the work of pulling out the wire W from the first opening end 6a of the work 6 can be executed. Thereby, the lead-out portion Wp can be formed on the work 6.

Therefore, according to the work holding portion 40, the wire W can be pulled out from the first opening end 6a of the work 6 with respect to the work 6 having a large height dimension from the first opening end 6a to the second opening end 6b. At the same time, the crossover arrangement work can be performed at the second opening end 6b of the work 6. Further, according to the work holding portion 40, the wire can be pulled out from the first opening end of the work with respect to the work (not shown) having a small width dimension perpendicular to the height direction and the second opening of the work. Crossover placement work can be performed at the ends.

As described above, in the work holding part 40, each of the plurality of wire rod support parts 44 includes the movable part 44a and the fixed part 44b.
In such a work holding portion 40, the wire rod W is pulled out from the first opening end 6 a because the wire rod support portion 44 is in the first state during the work of winding the wire rod W around the work 6. You can maintain a state of supporting. In addition, the work holding portion 40 changes the state of the wire rod support portion 44 from the first state to the second state after the work of winding the wire rod W around the work 6, and thus the wire rod W supported by the wire rod support portion 44. Can be released from the wire rod contact portion 44a1 of the wire rod support portion 44, and the work 6 on which the winding operation of the wire rod W has been completed can be removed from the holding body portion 42.

As described above, in the work holding part 40, the fixed part 44b is configured to switch between the first state and the second state by linearly moving so that the relative position to the movable part 44a changes. There is. A fixed contact surface 44b1 of the fixed portion 44b that contacts the movable portion 44a is formed as an inclined surface that is inclined with respect to the linear movement direction DF1.

Since the fixed contact surface 44b1 is formed as an inclined surface as described above, it becomes difficult for the fixed portion 44b and the movable portion 44a to be fixed to each other in the first state, and when the first state is switched to the second state, the movable portion is not moved. It is possible to smoothly perform the work of separating the fixed portion 44b from the 44a.

As described above, the work holding section 40 includes the auxiliary support section 46. Such a work holding unit 40 can suppress the looseness of the wire W by supporting the wire W with the auxiliary support 46 when the wire W is arranged between the plurality of wire support units 44. .. Accordingly, when the wire W is wound around the work 6, it is possible to prevent the arrangement state of the wire W from becoming inappropriate.

As described above, in the work holding portion 40, the holding body portion 42 holds the work 6 in a state where the first opening end 6a is arranged vertically below and the second opening end 6b is arranged vertically above. Is configured to hold. By holding the work 6 in such a state, the work holding portion 40 can secure a wide space around the second opening end 6b in which the nozzle 3 can be arranged.

Next, since the winding machine 100 includes the work holding portion 40, the work 6 having a large height dimension from the first opening end 6a to the second opening end 6b is removed from the first opening end 6a of the work 6. The wire W can be pulled out, and the crossover wire arranging work can be performed at the second opening end 6b of the work 6. Further, since the winding machine 100 includes the work holding portion 40, the wire rod can be pulled out from the first open end of the work with respect to a work (not shown) having a small width dimension perpendicular to the height direction. The crossover arranging work can be executed at the second opening end of the work.

[1-7. Correspondence of wording]
Here, the correspondence between the words will be described.
The work holding unit 40 corresponds to an example of a work holding jig, and the release operation unit 50 corresponds to an example of a release operation machine.

[2. Other Embodiments]
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and can be implemented in various modes without departing from the scope of the present disclosure.

(2a) In the above embodiment, the work holding portion 40 (work holding jig) including the six wire rod supporting portions 44 has been described, but the number of wire rod supporting portions in the work holding jig is not limited to six. Absent. For example, the work holding jig may set the number of wire rod support portions in accordance with the number of lead-out portions Wp formed on the work.

(2b) In the above embodiment, the work holding part 40 (work holding jig) including the auxiliary support part 46 has been described, but the work holding jig may not include the auxiliary support part. In other words, in an application in which the slack of the wire W can be allowed to a certain extent in the drawing portion forming step, the work holding jig does not include an auxiliary supporting portion, and only the plurality of wire supporting portions support the wire W, so that the drawing is performed. It may be configured to form the portion Wp.

(2c) In the above embodiment, the work 6 is removed from the work holding unit 40 (work holding jig), and then the drawing-out portion Wp is cut. However, the work holding jig is limited to such a configuration. There is no such thing. For example, as schematically shown in FIG. 10, the wire rod cutting unit 53 may be provided so that the lead-out portion Wp is cut by the wire rod cutting unit 53 before the work 6 is removed from the work holding jig. The wire rod cutting unit 53 may be configured using, for example, an electric cutter having a size that can be inserted into the work holding unit 40 from the side surface opening 42b. The wire cutting portion 53 may be configured to cut the lead-out portion Wp (in other words, the wire W) at the tip 53a.

The wire rod cutting unit 53 may include a driving unit so as to be movable between the inside and the outside of the work holding unit 40. Then, after forming the lead-out portion Wp on the work 6, the wire rod cutting portion 53 is moved to the inside of the work holding portion 40 by the drive unit and the wire rod cutting portion 53 is configured to cut the lead-out portion Wp. Good. In addition, the lead-out portion Wp is, in other words, the wire rod W arranged so as to connect the plurality of wire rod support portions 44 and the work 6.

In other words, the work holding unit 40 including the wire rod cutting unit 53 cuts the lead-out unit Wp using the wire rod cutting unit 53 after the work of winding the wire rod W around the work 6, and thereby the plurality of wire rod supporting units 44 by the wire rod W are formed. The connection state with the work 6 can be canceled, and the work 6 can be removed from the holding body 42.

When the wire rod cutting unit 53 is provided as described above, the plurality of wire rod supporting units may be in a fixed state like the auxiliary supporting unit 46 without the movable unit. That is, by cutting the lead-out portion Wp by the wire rod cutting portion 53, the work 6 is held by the work holding portion 40 (work holding jig) without the plurality of wire rod supporting portions being in the second state as shown in FIG. Can be removed from.

(2d) In the above-described embodiment, the mode in which the two clamp mechanisms 41 are operated by the user has been described, but the invention is not limited to such a mode. For example, the winding machine may include a clamp pressing portion configured to exert a driving force for pressing the operation end portion 41c of the clamp mechanism 41. The clamp pressing portion is configured to press the operation end portion 41c at the execution timing of the work supply operation/work removal operation for the work holding jig. As a result, the user can save the trouble of operating the clamp mechanism 41, and can efficiently perform the work supply work and the work removal work. The clamp pressing portion may be provided with a power source such as a motor, and the power may be used as a driving force for pressing the operation end portion 41c.

(2e) The functions of one constituent element in the above-described embodiment may be distributed as a plurality of constituent elements, or the functions of a plurality of constituent elements may be integrated into one constituent element. Further, at least a part of the configuration of the above embodiment may be replaced with a known configuration having the same function. Moreover, you may omit a part of structure of the said embodiment. Further, at least a part of the configuration of the above-described embodiment may be added or replaced with respect to the configuration of the other above-described embodiment. Note that all aspects included in the technical idea specified only by the wording recited in the claims are embodiments of the present disclosure.

3... Nozzle, 6... Work, 6a... 1st opening end, 6b... 2nd opening end, 40... Work holding part, 40a... Work placement part, 41... Clamping mechanism, 42... Holding body part, 42a... Open end, 44... Wire rod support part, 44a... Movable part, 44a1... Wire rod contact part, 44a2... Rotating shaft, 44a3... Fixed contact part, 44a4... Wire rod entangled part, 44a5... Entangled groove part, 44b... Fixed part, 44b1 ... fixed contact surface, 44c... elastic part, 46... auxiliary support part, 46a... extended part, 46b... plate-like part, 50... release operation part, 53... wire rod cutting part, 60... nozzle holder (nozzle bracket) , 70... Nozzle rotating unit, 71... Rotating shaft, 100... Winding machine, 601... Nozzle arm portion, 603... Connecting arm portion, C... Pole, W... Wire rod, Wc... Coil, Wp... Lead-out portion, Wt … Crossover, Y… Yoke part.

Claims (7)

A work holding jig configured to hold a work around which a coil-forming wire is wound,
The workpiece includes a tubular yoke portion extending from the first opening end to the second opening end, and a plurality of poles protruding radially inward from a tubular inner surface of the yoke portion. The wire rod wound around each of the poles is provided as a plurality of coils, an end portion of the wire rod is arranged at the first opening end, and a crossover wire which is the wire rod connecting the plurality of coils is the second wire. Configured to be placed at the open end,
The work holding jig is
A holding body having a cylindrical shape having an opening end for arranging the work, the holding body configured to hold the work in a state of covering the first opening end and exposing the second opening end. Department,
A plurality of wire rod abutting portions that project radially inward from the cylindrical inner surface of the holding body portion and abut the wire rod wound around the workpiece, and are configured to support the wire rod by the wire rod abutting portion. A wire rod support part,
With
Work holding jig. The work holding jig according to claim 1,
Each of the plurality of wire rod support portions,
A movable part having the wire rod contact part and configured to change its posture,
A fixed part configured to abut the movable part to limit a change in posture of the movable part;
Equipped with
The movable portion has a posture in which the movable portion has a first posture in which the wire rod is supported by the wire rod contact portion and a second posture in which the wire rod is released from the wire rod contact portion. Configured to change,
Each of the plurality of wire rod support portions,
A first state in which the fixed portion is in contact with the movable portion while the posture of the movable portion is restricted to the first posture;
A second state in which the fixed portion is arranged at a position different from the first state so that the movable portion can freely change its posture between the first posture and the second posture;
Configured to switch to,
Work holding jig. The work holding jig according to claim 2,
The fixed part is configured to switch between the first state and the second state by linearly moving so that the relative position to the movable part changes.
The fixed contact surface of the fixed portion that contacts the movable portion is an inclined surface that is inclined with respect to the direction of the linear movement.
Work holding jig. The work holding jig according to any one of claims 1 to 3,
A wire rod cutting unit that cuts the wire rods arranged to connect the plurality of wire rod support units and the work;
Work holding jig. The work holding jig according to any one of claims 1 to 4,
An auxiliary support portion configured to project radially inward from the cylindrical inner surface of the holding body portion,
The auxiliary support portion is formed in a region between the plurality of wire rod support portions on the tubular inner surface,
Further, the auxiliary support portion is formed on the tubular inner surface such that a portion of the auxiliary support portion that comes into contact with the wire is closer to the opening end than the wire rod contact portion of the wire support portion. Has been done.
Work holding jig. The work holding jig according to any one of claims 1 to 5,
The holding main body is configured to hold the work in a state where the first opening end is arranged vertically downward and the second opening end is arranged vertically upward.
Work holding jig. A winding machine configured to wind a wire material for forming a coil on a work,
A work holding jig according to any one of claims 2, 3, and 4 to 6, which depends on claim 2,
A release operating device configured to switch each of the plurality of wire rod support portions from the first state to the second state;
Winding machine equipped with.

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