CN114667582A - Nozzle holder, nozzle rotating unit, winding machine, and method for changing relative position of nozzle fixing part with respect to shaft connecting part - Google Patents

Abstract

A nozzle holder of an aspect of the present disclosure holds a nozzle that holds a wire for forming a coil. The nozzle holder is coupled to the rotary shaft. The nozzle holder includes a nozzle fixing portion, a shaft coupling portion, a nozzle arm portion, a coupling arm portion, and an expansion portion. The nozzle arm portion includes a nozzle fixing portion. The nozzle arm portion is provided to extend in a direction parallel to a virtual plane perpendicular to the axial direction of the rotary shaft. The connecting arm portion connects the nozzle arm portion and the rotating shaft in a state where the nozzle fixing portion and the shaft connecting portion are separated from each other. The expansion/contraction portion expands and contracts in a direction parallel to the virtual plane in a1 st region extending from the nozzle fixing portion to the shaft coupling portion via the nozzle arm portion and the coupling arm portion.

Description

Nozzle holder, nozzle rotating unit, winding machine, and method for changing relative position of nozzle fixing portion with respect to shaft connecting portion

Cross Reference to Related Applications

This international application claims priority to japanese patent application No. 2019-205723, filed by the japanese patent office at 11/13/2019, and the entire contents of japanese patent application No. 2019-205723 are incorporated herein by reference.

Technical Field

The present disclosure relates to a nozzle holder, a nozzle rotating unit, a winding machine, and a method of changing a relative position of a nozzle fixing portion with respect to a shaft coupling portion.

Background

There is known a winding machine that winds a wire material for forming a coil onto a workpiece.

The winding machine includes a workpiece holding portion configured to hold a workpiece, and a nozzle rotating unit having a nozzle for holding a wire. The nozzle rotating unit is provided with: the nozzle holder holds the nozzle, a rotary shaft connected to a shaft connecting portion of the nozzle holder, and a drive actuator for driving the rotary shaft to rotate. Examples of the workpiece include a workpiece having a plurality of poles protruding radially inward from a yoke portion forming an outer periphery.

The winding machine is configured to switch between a winding state and a wire processing state in a series of operations in which the wire nozzle holder winds the wire material around the workpiece.

The winding state is a state in which the wire rod is wound on each of the plurality of poles by moving the nozzle and/or the workpiece in the circumferential direction and the thickness direction of the workpiece, respectively, and moving the nozzle around the plurality of poles in a relative manner. The wire processing state is a state in which the wire material is arranged at a position extremely different from the plurality of positions by using the wire nozzle arranged at a position different from the winding state by the rotation of the rotating shaft.

That is, the wire winding mechanism is configured to wind the wire material around the workpiece by switching between a winding state and a wire processing state by changing the position of the wire nozzle with the rotation of the rotating shaft (patent document 1). The workpiece on which the wire rod is wound by the winding machine can be used as a coil product, for example.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2003-169455

Disclosure of Invention

Problems to be solved by the invention

However, in the above-described winding machine, the tip end position of the nozzle may move along with the rotation of the nozzle holder, and if the tip end position of the nozzle moves when the winding state and the wire processing state are switched, the relative position between the nozzle and the workpiece changes, and the wound wire may become loose.

The slackening of the wire rod as described above does not cause an obstacle in the manufacture of a coil product having a low required accuracy in the arrangement accuracy of the wire rod, but may cause a problem in the manufacture of a coil product having a high required accuracy in the arrangement accuracy of the wire rod.

That is, if the wire rod is loosened by the rotation of the nozzle holder when the winding state and the wire processing state are switched, the arrangement accuracy of the wire rod is lowered, and in particular, in the manufacture of a coil product in which the required accuracy of the arrangement accuracy of the wire rod is high, there is a possibility that the required accuracy cannot be achieved.

Here, the nozzle holder, the nozzle rotating unit, and the winding machine according to the aspect of the present disclosure are desired to be able to suppress the slack of the wire rod generated along with the rotation of the nozzle holder.

Technical scheme for solving problems

The nozzle holder according to one aspect of the present disclosure is configured to hold a nozzle. The nozzle holder is coupled to the rotating shaft. The nozzle is configured to hold a wire for forming a coil. The nozzle holder includes a nozzle fixing portion, a shaft coupling portion, a nozzle arm portion, a coupling arm portion, and an expansion portion.

The nozzle fixing part is configured to fix the nozzle. The shaft coupling portion is configured to be coupled to the rotating shaft. The nozzle arm portion is provided with a nozzle fixing portion. The nozzle arm portion is configured to extend in a direction parallel to a virtual plane perpendicular to an axial direction of the rotary shaft. The connecting arm portion includes a shaft connecting portion. The connecting arm portion is configured to connect the nozzle arm portion and the rotating shaft in a state where the nozzle fixing portion and the shaft connecting portion are separated from each other. The expansion/contraction portion is configured to expand and contract in a direction parallel to the virtual plane in a1 st region that reaches the shaft coupling portion from the nozzle fixing portion via the nozzle arm portion and the coupling arm portion.

The nozzle holder can change the relative position of the nozzle fixing part and the shaft connecting part by the expansion of the expansion part. That is, the relative position of the nozzle fixing portion with respect to the shaft coupling portion is adjusted using the extensible portion, whereby the tip position of the nozzle can be brought closer to the extension line of the rotation shaft. The nozzle holder having the tip position of the nozzle adjusted in this manner can suppress the tip position of the nozzle from being separated from the extension line of the rotation shaft when the rotation operation is performed by the rotation shaft.

Therefore, the nozzle holder can suppress the occurrence of the slack of the wire rod in association with the rotation operation of the nozzle holder in a series of operations of winding the wire rod around the workpiece. And the nozzle holder can manufacture a coil product requiring high accuracy in the arrangement accuracy of the wire rod.

The expansion portion may include a1 st expansion portion configured to expand and contract in a1 st direction. The 1 st direction is a direction parallel to the virtual plane and parallel to the extending direction of the nozzle arm portion.

The nozzle holder is configured to adjust the nozzle fixing portion and the tip position of the nozzle by the expansion and contraction of the 1 st expansion and contraction portion. Thus, the tip holder can suppress the tip position of the tip from being separated from the extension line of the rotation shaft when the tip holder performs the turning operation.

The stretchable section may include a2 nd stretchable section configured to stretch in the 2 nd direction. The 2 nd direction is a direction parallel to the virtual plane and intersecting with the extending direction of the nozzle arm portion. In other words, the "direction intersecting the extending direction of the nozzle arm portion" is the "direction not parallel to the extending direction of the nozzle arm portion".

The nozzle holder is configured to adjust the nozzle fixing portion and the tip position of the nozzle by the expansion and contraction of the 2 nd expansion and contraction portion. This makes it possible to suppress the tip position of the nozzle from being distant from the extension line of the rotation shaft when the nozzle holder performs the turning operation.

The stretchable section may include a3 rd stretchable section configured to stretch in the 3 rd direction. The 3 rd direction is parallel to the axial direction of the rotating shaft. The nozzle holder is configured to adjust the nozzle fixing portion and the tip position of the nozzle by the expansion and contraction of the 3 rd expansion and contraction portion. This makes it possible to suppress the tip position of the nozzle from being distant from the extension line of the rotation shaft when the nozzle holder performs the turning operation.

The nozzle holder is capable of changing the positions of the nozzle fixing portion and the tip of the nozzle in a plurality of directions, i.e., a1 st direction, a2 nd direction, and a3 rd direction. The tip holder enlarges an adjustable range of the tip position of the tip as compared with a case where the tip fixing portion and the tip position of the tip are changed in one direction.

Therefore, the nozzle holder expands the adjustable range of the front end position of the nozzle when the nozzle holder performs the rotating action. Therefore, the nozzle holder can suppress the occurrence of the slack of the wire rod accompanying the rotation operation of the nozzle holder, and can manufacture a coil product with high wire rod arrangement accuracy.

The 1 st expansion part may be provided at the nozzle arm part. The 2 nd expansion part may be provided at the joint arm part. The 3 rd expansion part may be provided at the connecting arm part.

In the 1 st region, the 1 st, 2 nd, and 3 rd expansion parts may be arranged in the order of the 1 st, 3 rd, and 2 nd expansion parts from the tip fixing part through the tip arm part and the connection arm part toward the shaft connection part.

A nozzle rotating unit according to another aspect of the present disclosure includes the nozzle holder, the nozzle, the rotating shaft, and the driving actuator according to any one of the aspects. The nozzle is fixed to the nozzle fixing portion of the nozzle holder. The rotating shaft is connected to a shaft connecting portion of the nozzle holder. The drive actuator is configured to drive the rotating shaft to rotate.

Since the nozzle rotating unit includes the nozzle holder according to any one of the above aspects, the nozzle rotating unit can suppress the occurrence of the slack of the wire material in association with the rotating operation of the nozzle holder, similarly to the nozzle holder. Therefore, the nozzle rotating unit can manufacture coil products with high wire arrangement precision.

A winding machine according to another aspect of the present disclosure is configured to wind a wire material for forming a coil around a workpiece. The workpiece includes a plurality of poles protruding radially inward from a yoke portion forming an outer periphery. The winding machine comprises: a workpiece holding portion configured to hold a workpiece; and the nozzle rotating unit.

The winding machine is configured to switch the nozzle holder between a winding state and a wire processing state in a series of operations in which the nozzle holder winds the wire material around the workpiece. The winding state is as follows: the winding machine winds the wire material around the plurality of poles by moving the nozzle and/or the workpiece in the circumferential direction and the thickness direction of the workpiece, respectively, and moving the nozzle relative to the plurality of poles, respectively. The line processing state is the following state: the winding machine uses a nozzle arranged at a position different from a winding state by rotation of a rotating shaft, and arranges the wire material at a position different from the plurality of poles. The winding machine is configured to switch between a winding state and a wire processing state by rotation of the nozzle holder in accordance with rotation of the rotating shaft.

Since the winding machine includes the nozzle holder, the winding machine can suppress the occurrence of the slack of the wire rod in accordance with the rotation operation of the nozzle holder, similarly to the nozzle holder. Therefore, the winding machine can manufacture a coil product with high wire rod configuration precision.

A winding machine according to another aspect of the present disclosure includes a work holding portion and the nozzle rotating unit.

The workpiece holding portion is configured to hold a workpiece. The workpiece is configured such that a wire for forming a coil is to be wound onto the workpiece. The workpiece includes a yoke portion forming an outer periphery, and a plurality of poles protruding radially inward from the yoke portion.

The drive actuator is configured to switch the nozzle holder to a winding state or a thread processing state by rotation of the nozzle holder in accordance with rotation of the rotation shaft.

The nozzle holder in the wound state moves the nozzle and/or the workpiece in the circumferential direction and the thickness direction of the workpiece, respectively. The nozzle holder in the winding state winds the wire material onto the plurality of poles respectively by making the nozzle perform relative circulating movement with respect to the plurality of poles respectively.

The nozzle holder in the thread processing state disposes the nozzle to a position different from the winding state by rotation of the rotating shaft. The nozzle holder in the wire processing state disposes the wire material to a position extremely different from the plurality of portions using the nozzle disposed to a position different from the winding state.

As with the nozzle holder, the winding machine can suppress the occurrence of the slack of the wire material in association with the rotational operation of the nozzle holder. Therefore, the winding machine can manufacture a coil product with high wire rod configuration precision.

Another aspect of the present disclosure relates to a method for changing a relative position of a nozzle fixing portion with respect to a shaft coupling portion, the method including: at least one of the 1 st, 2 nd and 3 rd telescopic motions is performed.

The 1 st expansion and contraction operation corresponds to an operation of expanding and contracting a1 st interval between the shaft coupling portion and the nozzle fixing portion. The 1 st interval corresponds to an interval along the 1 st direction. The 1 st direction is parallel to the virtual plane and parallel to the extending direction of the nozzle arm portion. The virtual plane is perpendicular to the axial direction of the rotating shaft. The nozzle fixing portion is provided on the nozzle arm portion. The extending direction of the nozzle arm part is parallel to the virtual plane. The shaft coupling portion is configured to be coupled to the rotating shaft. The shaft coupling portion is provided at the coupling arm portion. The connection arm portion is configured to connect the nozzle arm portion and the rotation shaft in a state where the nozzle fixing portion and the shaft connection portion are separated from each other.

The 2 nd expansion operation corresponds to an operation of expanding and contracting a2 nd interval between the shaft coupling portion and the nozzle fixing portion. The 2 nd interval corresponds to an interval along the 2 nd direction. The 2 nd direction is parallel to the virtual plane and intersects with an extending direction of the nozzle arm portion.

The 3 rd expansion operation corresponds to an operation of expanding and contracting a3 rd interval between the shaft coupling portion and the nozzle fixing portion. The 3 rd interval corresponds to an interval along the 3 rd direction. The 3 rd direction is parallel to the axial direction of the rotating shaft.

In this method, since the relative position of the nozzle fixing portion and the shaft connecting portion can be adjusted by changing any one of the 1 st interval, the 2 nd interval, and the 3 rd interval, similarly to the nozzle holder described above, the method can suppress the occurrence of slack in the wire material along with the rotational operation of the nozzle holder. Therefore, the method can manufacture coil products with high wire arrangement precision.

The winding machine is not limited to a structure that holds one nozzle. The winding machine may be a structure that holds a plurality of nozzles. The winding machine may be provided with a plurality of tip holders. The winding machine may have three or more wire mouths. In this case, the winding machine may include three or more nozzle holders.

Drawings

Fig. 1 is an overall side view of a winding machine of embodiment 1.

Fig. 2 is a front view of a No. 2 base and a nozzle rotating unit in the winding machine.

Fig. 3 is an overall plan view of the winding machine according to embodiment 1.

Fig. 4 is a front perspective view of the nozzle rotating unit.

Fig. 5 is a rear perspective view of the nozzle rotating unit.

Fig. 6 is a perspective view of the nozzle holder, the work, and the work holding portion in a wound state.

Fig. 7 is a perspective view of the nozzle holder, the workpiece, and the workpiece holding portion in the wire processing state.

Fig. 8 is a1 st exploded perspective view of the tip holder.

Fig. 9 is a2 nd exploded perspective view of the nozzle holder.

Fig. 10 is an explanatory view of a nozzle holding a wire and a nozzle holder.

Description of reference numerals

3 … thread nozzle; 6 … workpiece; 40 … workpiece holding part; 40a … workpiece placement portion;

60 … nozzle holder (nozzle holder); 70 … nozzle rotating unit; 71 … rotating the shaft;

72 … drive the actuator; 100 … winding machine; 601 … nozzle arm part;

601a … st nozzle arm part 1; 601a1 … nozzle fixing part; 601b … arm 2 nd nozzle;

603 … connecting the arm parts; 603a … 1 st joint arm part; 603b … arm part 2;

603c … arm part 3; 603c1 … shaft connecting part; 605 … 1 st expansion part;

606 …, telescoping section 2; 607 st 607 … rd expansion part; a C … pole; an L1 … extension line;

a W … wire rod; y … yoke.

Detailed Description

Embodiments to which the present disclosure is applied are described below with reference to the drawings.

Further, the present disclosure is not limited to the following embodiments, and various embodiments can be adopted within the technical scope of the present disclosure.

[1. embodiment 1 ]

[1-1. Overall Structure ]

As shown in fig. 1, 2, and 3, the winding machine 100 according to the present embodiment is configured to wind a wire material W for forming a coil around a workpiece 6.

As shown in fig. 6, the workpiece 6 of the present embodiment is an inner core type multi-pole armature including a yoke portion Y forming an outer periphery and a plurality of poles C protruding radially inward from the yoke portion Y.

As shown in fig. 1, 2, and 3, the winding machine 100 includes a1 st base 1, a2 nd base 2, an index rotation motor 4, a nozzle driving motor 5, a workpiece holding portion 40, and a nozzle turning unit 70. The nozzle rotating unit 70 includes a nozzle holder 60 (hereinafter also referred to as a nozzle holder 60). The nozzle holder 60 is configured to hold the nozzle 3. The nozzle 3 is configured to hold a wire rod W for forming a coil.

Both the 1 st base 1 and the 2 nd base 2 are fixed to a main base, not shown. The 1 st base 1 is configured such that the indexing motor 4 is fixed to be incapable of rotation. The index rotation motor 4 and the nozzle driving motor 5 are driving devices and are rotation driving mechanisms.

The index rotation motor 4 is configured to generate a driving force for rotating the workpiece 6. An output shaft (not shown) of the indexing motor 4 is coupled to a main shaft 33 serving as a shaft for rotating. The main shaft 33 is coupled to the workpiece holding unit 40. The workpiece holding portion 40 is configured to fix the workpiece 6 by a clamp mechanism not shown. Therefore, if the rotational driving force of the index rotation motor 4 is transmitted to the workpiece holding portion 40, the workpiece 6 fixed to the workpiece holding portion 40 rotates. In this way, the relative position of the workpiece 6 with respect to the tip holder 60 is changed by the rotation of the workpiece 6.

The nozzle driving motor 5 is configured to generate a driving force for rotating the nozzle holder 60. The nozzle driving motor 5 is fixed to the support member 12.

The support member 12 is fixed to the left-right moving section 16. The left-right moving section 16 includes a linear guide section 19. The linear guide 19 is configured to move along the linear guide 20. The linear guide 20 is fixed to the forward/backward moving frame 14.

The left-right moving portion 16 is configured to move in the left-right direction with respect to the workpiece 6 by moving along the linear guide 20 via the linear guide 19. The winding machine 100 includes a left-right movement motor 21 for moving the left-right movement unit 16. The "left-right direction with respect to the workpiece 6" described herein is a left-right direction when the winding machine 100 is viewed from the front side. In other words, the "left-right direction with respect to the workpiece 6" is a direction going from the back side toward the front side of the drawing sheet in fig. 1, or a direction going from the front side toward the back side of the drawing sheet. The "left-right direction with respect to the workpiece 6" is the left-right direction of the drawing sheet in fig. 2. The "left-right direction with respect to the workpiece 6" is the up-down direction of the drawing sheet in fig. 3.

The rotational driving force output from the left-right movement motor 21 is converted from the rotational driving force to the linear driving force by the ball screw device 22a (see fig. 3) via the coupling 22, and becomes the driving force for linearly moving the left-right movement portion 16. That is, the left-right moving section 16 is configured to be movable along the linear guide 20 by the driving force of the left-right moving motor 21, and thereby the relative position of the left-right moving section 16 in the left-right direction with respect to the workpiece 6 can be changed.

The forward/backward movement frame 14 includes a linear guide 13. The linear guide 13 is configured to move along the linear guide 15. The linear guide 15 is fixed to the 2 nd base 2. The linear guide 15 is disposed in a direction orthogonal to the linear guide 20. In other words, the linear guide 15 is disposed along the front-rear direction with respect to the workpiece 6. In addition, the "front-rear direction with respect to the workpiece 6" described herein is a front-rear direction when the winding machine 100 is viewed from the front side. In other words, the "front-rear direction with respect to the workpiece 6" is the left-right direction of the drawing sheet in fig. 1. The "front-rear direction with respect to the workpiece 6" is a direction going from the back side toward the front side of the drawing sheet in fig. 2, or a direction going from the front side toward the back side of the drawing sheet. The "front-rear direction with respect to the workpiece 6" is the left-right direction of the drawing in fig. 3.

The forward/backward movement frame 14 is configured to move in the forward/backward direction with respect to the workpiece 6 by the linear guide 13 moving along the linear guide 15. The winding machine 100 includes a forward/backward movement motor 17 for moving the forward/backward movement frame 14. The rotational driving force output from the forward/backward movement motor 17 is converted from the rotational driving force to the linear driving force by the ball screw device 18a (see fig. 2) via the coupling 18, and becomes the driving force for linearly moving the forward/backward movement frame 14. That is, the front-rear movement frame 14 is configured to be movable along the linear guide 15 by the driving force of the front-rear movement motor 17, thereby changing the distance between the front-rear movement frame 14 and the workpiece 6.

The nozzle rotating unit 70 is fixed to the link plate 24 by a screw or the like. The linking plate 24 is fixed to the linear block 25 by a screw or the like. The linear block 25 is configured to move along the linear guide 23. The linear guide 23 is fixed to the support member 12. The linear guide 23 is disposed in a direction (vertical direction in fig. 1) orthogonal to both the linear guide 15 and the linear guide 20. In other words, the linear guide 23 is disposed along the vertical direction (vertical direction in fig. 1) with respect to the workpiece 6. Therefore, the nozzle rotating unit 70 is configured to move in the vertical direction with respect to the workpiece 6 by the linear block 25 moving along the linear guide 23.

The "vertical direction with respect to the workpiece 6" described herein is a vertical direction when the winding machine 100 is viewed from the front side. In other words, the "vertical direction with respect to the workpiece 6" is the vertical direction of the drawing sheet in fig. 1. The "vertical direction with respect to the workpiece 6" is the vertical direction of the drawing sheet in fig. 2. The "vertical direction with respect to the workpiece 6" is a direction from the back side of the drawing sheet toward the front side in fig. 3, or a direction from the front side of the drawing sheet toward the back side.

The nozzle driving motor 5 is configured to generate a driving force for moving the nozzle rotating unit 70 up and down. The rotational driving force output from the nozzle driving motor 5 is converted from the rotational driving force to the linear driving force via a pulley (not shown) and a timing belt (not shown), and becomes the driving force for linearly moving the linear block 25. That is, the linear block 25 is configured to be movable along the linear guide 23 by the driving force of the nozzle driving motor 5, thereby being capable of changing the relative position in the vertical direction with respect to the workpiece 6. 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 relative position in the vertical direction with respect to the workpiece 6.

As shown in fig. 3, in the present embodiment, the front-rear direction is defined as: the forward-backward moving frame 14 moves relative to the workpiece 6, and the forward-backward moving frame 14 moves along the linear guide 15. After the operator fixes the workpiece 6 (see fig. 6) before winding to the workpiece holding portion 40, the forward/backward movement frame 14 moves in the forward/backward direction so that the workpiece 6 and the nozzle rotating unit 70 (specifically, the nozzle holder 60) approach each other, and thereby the winding operation can be performed on the workpiece 6 by the winding machine 100. The moving direction of the forward/backward moving frame 14 and the nozzle rotating unit 70 at this time is "the work feeding direction" in fig. 3.

Further, after the winding operation of the workpiece 6 by the winding machine 100 is completed, the forward-backward moving frame 14 is moved in the forward-backward direction so that the workpiece 6 and the nozzle rotating unit 70 (specifically, the nozzle holder 60) are separated from each other, whereby the workpiece 6 can be removed from the workpiece holding portion 40. The moving direction of the forward/backward moving frame 14 and the nozzle rotating unit 70 at this time is the "workpiece takeout direction" in fig. 3.

Likewise, the left-right direction is defined as: the direction in which the two workpieces 6 are arranged. In other words, the left-right direction is an extension direction of a line connecting center points of the two workpieces 6. The nozzle feed direction in the winding operation of the workpiece 6 is parallel to the left-right direction. The nozzle conveying direction is a moving direction when the nozzle 3 is moved by a predetermined pitch size (for example, a thickness size of the wire W) per one turn of the wire W wound around the pole C of the workpiece 6. The nozzle transport direction is a direction along the center axis of the pole, and is a radial direction of the workpiece 6.

As shown in fig. 1 and 3, the workpiece holding portion 40 includes a workpiece arrangement portion 40a configured to arrange the workpiece 6. The nozzle 3 can be arranged inside the workpiece 6 by moving a part of the nozzle holder 60 inside the workpiece 6 arranged in the workpiece arrangement portion 40a with respect to the workpiece 6.

As shown in fig. 3, the nozzle conveying direction is set to intersect (e.g., be orthogonal to) the workpiece feeding direction or the workpiece takeout direction. At this time, the nozzle transport direction as viewed from the operator who performs the work of supplying or taking out the work is the left-right direction. Further, the nozzle conveying direction is parallel to the arrangement direction of the two works 6. By setting the nozzle transport direction in this manner, it is easy for an operator who performs work of supplying a workpiece or work of taking out a workpiece to visually confirm the nozzle 3 and to confirm the winding state of the workpiece 6. The "arrangement direction of the two workpieces 6" is a direction (in other words, a left-right direction) connecting the center points of the two workpieces 6 in the plan view of fig. 3 (viewed along the axial direction of the workpieces 6).

The winding machine 100 of the present embodiment is configured to simultaneously wind the wire rod W around two workpieces 6. That is, the winding machine 100 is a duplex type winding machine including two yarn nipples 3. The winding machine 100 includes two index rotation motors 4, two nozzle holders 60, and the like.

[1-2. nozzle rotating unit ]

Next, the nozzle rotating unit 70 will be explained.

As shown in fig. 4 to 7, the nozzle rotating unit 70 includes two nozzle holders 60, two nozzles 3, and a unit body 700. The unit body 700 is configured such that the two nozzle holders 60 each perform rotation. As described above, the unit main body 700 is fixed to the linear block 25 via the coupling plate 24.

The unit body 700 includes two pivot shafts 71, two drive actuators 72, and two connecting arms 73. The two rotation shafts 71 are configured to be coupled to the two nozzle holders 60, respectively. The two drive actuators 72 are each provided with a telescopic pneumatic cylinder. The coupling arm 73 is a member that couples the end 72a of the drive actuator 72 and the rotating shaft 71. The two drive actuators 72 are configured to rotate the two rotation shafts 71 via the two connection arms 73, respectively.

The unit main body 700 can switch the rotational position of the rotational shaft 71 to any one of two different positions by driving the actuator 72 to be switched to the extended state or the shortened state. Thereby, the unit main body 700 can switch each of the two nozzle holders 60 to either one of the winding state and the thread processing state. The winding state is a state of the nozzle holder 60 in the winding process. The thread processing state is a state of the tip holder 60 in the thread processing step.

The two turning shafts 71 are disposed such that respective axial directions are parallel to the front-rear direction and respective axial directions are orthogonal to the left-right direction. In other words, the two turning shafts 71 are arranged so as to be orthogonal to the arrangement direction of the two workpieces 6. The direction in which the nozzle 3 is conveyed by the nozzle-rotating unit 70 is set parallel to the arrangement direction of the two workpieces 6 corresponding to the two nozzles 3.

[1-3. wound State and wire processing State ]

The nozzle rotating unit 70 is configured to change the relative position of the nozzle 3 and the workpiece 6 to any one of the following two states by changing the rotational position of the nozzle holder 60. The two states are a winding state and a wire processing state.

Here, the relative position of the tip holder 60 shown in fig. 6 to the workpiece 6 is the relative position in the wound state. In the winding state, the rotational position of the nozzle holder 60 is set such that the tip of the nozzle 3 is in a state of facing the inner peripheral surface of the workpiece 6. The relative position of the nozzle holder 60 to the workpiece 6 shown in fig. 7 is a relative position in a state of line processing. In the wire processing state, the rotational position of the nozzle holder 60 is set so that the tip end of the nozzle 3 is in a state of being opposed to the upper end surface of the workpiece 6.

The winding state is a state for winding the wire rod W onto each pole C of the workpiece 6. In the winding state, the relative movement locus of the nozzle 3 with respect to the workpiece 6 includes the following locus: the trajectory has a form in which a circumferential component and a thickness direction component are combined. The circumferential component is a movement component that varies due to the workpiece 6 being rotated in the circumferential direction by the workpiece holding portion 40, among the relative movement components of the workpiece 6 and the nozzle 3. The thickness direction component is a movement component that varies due to movement of the workpiece 6 or the nozzle holder 60 in the thickness direction (in other words, the up-down direction) of the workpiece 6, among the relative movement components of the workpiece 6 and the nozzle 3.

In the wound state, the nozzle 3 is movable along the circumferential direction of the workpiece 6 by moving relative to the workpiece 6 along the circumferential direction component, and is movable above or below the pole C to be wound along the circumferential direction of the workpiece 6. The nozzle 3 is relatively moved with respect to the workpiece 6 along the thickness direction component, and can be moved so as to pass through a gap (slit) formed between the pole C to be wound and the pole C adjacent thereto. By appropriately combining the relative movement of the circumferential direction component and the relative movement of the thickness direction component and repeating the combination of the relative movements, the nozzle 3 can be moved around the pole C. Thereby, the nozzle 3 can wind the wire W around the pole C.

The wire treatment state is a state for disposing the wire rod W to the upper end surface or the lower end surface in the thickness direction in the workpiece 6. In other words, the wire processing state is a state in which the wire rod W is arranged at a position different from the plurality of poles C in the workpiece 6 using the nozzle 3 arranged at a position different from the winding state by the rotation of the rotating shaft 71.

The nozzle 3 in the thread processing state shown in fig. 7 is rotated by 90 ° about the rotation shaft 71 as compared with the nozzle 3 in the winding state shown in fig. 6. The nozzle 3 is set to a thread processing state or a winding state by being rotated about the rotation shaft 71 together with the nozzle holder 60. That is, the nozzle 3 and the nozzle holder 60 can change the posture with respect to the workpiece 6 by performing state transition between the winding state and the wire processing state. Therefore, the posture of the nozzle 3 and the nozzle holder 60 with respect to the workpiece 6 in the winding state is different from the posture with respect to the workpiece 6 in the line processing state.

In the wire processing state, the relative movement state of the wire nozzle 3 with respect to the workpiece 6 includes a plurality of movement states. Examples of the plurality of moving states include a fixed state and an erected state. The bound state is a state in which the wire nozzle 3 is relatively moved with respect to the workpiece 6 so as to bind the wire W to a binding pin 6a provided upright on an end surface of the workpiece 6. The stringing state is a state in which the nozzle 3 is relatively moved with respect to the workpiece 6 so as to be strung as a jumper wire to a plurality of jumper pins 6b provided upright on an end surface of the workpiece 6.

The winding machine 100 is configured to switch between the winding step and the wire treatment step in a series of operations (a series of steps) for winding the wire material W around the workpiece 6. In the winding process, the relative position of the nozzle 3 and the workpiece 6 is set to the winding state. In the line processing step, the relative position of the nozzle 3 and the workpiece 6 is set to a line processing state. The winding machine 100 is configured to switch between a winding state and a wire processing state by rotation of the nozzle holder 60 in accordance with rotation of the rotation shaft 71.

The winding state is a state in which the wire rod W is wound around each of the plurality of poles C. In the wound state, the nozzle 3 and/or the workpiece 6 are moved in the circumferential direction and the thickness direction of the workpiece 6, respectively. In the wound state, the nozzle 3 and/or the workpiece 6 are moved, whereby the nozzle 3 is moved in a circling manner relative to each of the plurality of poles C. The wire treatment state is a state in which the wire rod W is arranged at a position different from the plurality of poles C. In the thread processing state, the nozzle 3 arranged at a position different from the winding state by the rotation of the rotating shaft 71 is used.

[1-4. nozzle holder ]

Next, the nozzle holder 60 (nozzle holder 60) will be explained.

As shown in fig. 6 to 9, the nozzle holder 60 is configured to hold the nozzle 3 and to be coupled to the rotating shaft 71.

The nozzle holder 60 includes a nozzle arm 601 and a connecting arm 603. The nozzle arm portion 601 includes a1 st nozzle arm portion 601a and a2 nd nozzle arm portion 601 b. The connecting arm portion 603 includes a1 st connecting arm portion 603a, a2 nd connecting arm portion 603b, and a3 rd connecting arm portion 603 c.

As shown in fig. 8 and 9, the 1 st nozzle arm portion 601a includes a nozzle fixing portion 601a1, a pulley 601a2, two screw holes 601a3, and a columnar portion 601a 4. The nozzle fixing portion 601a1 is a through hole configured to fix the nozzle 3. The nozzle 3 includes an insertion hole 3a penetrating from the rear end to the front end. The pulley 601a2 is provided as a guide member for defining the position of the wire W supplied to the nozzle 3. The two screw holes 601a3 are configured to be screwed with the 1 st fixing screw 611, respectively. The columnar portion 601a4 is formed in a columnar shape extending in the longitudinal direction. Two screw holes 601a3 are formed in the columnar portion 601a4, respectively.

The 2 nd nozzle arm portion 601b includes two position adjustment holes 601b1, a position adjustment groove 601b2, a coupling portion 601b3, and a screw hole 601b 4. The two position adjustment holes 601b1 are respectively through holes having an elliptical shape. The two position adjustment holes 601b1 are respectively configured to allow insertion of the 1 st fixing screw 611. The position adjustment groove 601b2 is a groove configured to allow the columnar portion 601a4 of the 1 st nozzle arm portion 601a to be disposed.

In a state where the columnar portion 601a4 is disposed in the position adjustment groove 601b2, the two 1 st fixing screws 611 are inserted through the two position adjustment holes 601b1 and screwed into the two screw holes 601a 3. This enables the 1 st nozzle arm portion 601a and the 2 nd nozzle arm portion 601b to be integrally fixed. At this time, the length of the nozzle arm portion 601 can be adjusted by loosening the screwing of the two 1 st fixing screws 611 and sliding the columnar portion 601a4 with respect to the position adjustment groove 601b 2. That is, the length of the nozzle arm portion 601 can be adjusted by changing the relative positions of the 1 st nozzle arm portion 601a and the 2 nd nozzle arm portion 601 b. After the length is adjusted, the screwing of the two 1 st fixing screws 611 is tightened, whereby the length of the nozzle arm portion 601 can be kept constant. The adjustable range of the length of the nozzle arm 601 is determined by the major diameter of the ellipse of the position adjustment hole 601b 1. The larger the major diameter dimension, the larger the adjustable range.

The coupling portion 601b3 is configured to be insertable into a coupling hole 603a3 described later of the coupling arm portion 603. A screw hole 601b4 is formed at an end of the coupling portion 601b 3. The screw hole 601b4 is configured to be screwed with the 2 nd fixing screw 612.

That is, the nozzle arm portion 601 is configured to hold the nozzle 3 and to be coupled to the coupling arm portion 603.

The 1 st link arm portion 603a includes two position adjustment holes 603a1, a position adjustment groove 603a2, and a coupling hole 603a 3. The two position adjustment holes 603a1 are respectively through holes having an elliptical shape. The two position adjustment holes 603a1 are respectively configured to allow insertion of the 3 rd fixing screw 613. The position adjustment groove 603a2 is a groove configured to allow a part of the 2 nd connecting arm portion 603b (a ridge portion 603b4 described later) to be disposed therein. The coupling hole 603a3 is a through hole through which the coupling portion 601b3 of the nozzle arm 601 can be inserted.

In a state where the coupling portion 601b3 is disposed in the coupling hole 603a3, the nozzle arm portion 601 and the coupling arm portion 603 (specifically, the 1 st coupling arm portion 603a) can be integrally fixed by screwing the 2 nd fixing screw 612 into the screw hole 601b 4.

The 2 nd connecting arm portion 603b includes two position adjustment holes 603b1, a position adjustment groove 603b2, two screw holes 603b3, and a ridge portion 603b 4.

The two position adjustment holes 603b1 are respectively through holes having an elliptical shape. The two position adjustment holes 603b1 are respectively configured to allow the 4 th fixing screw 614 to be inserted therethrough. The position adjustment groove 603b2 is a groove configured to allow a part of the 3 rd connecting arm portion 603c (a ridge portion 603c3 described later) to be disposed therein. The two screw holes 603b3 are configured to be screwed with the 3 rd fixing screws 613, respectively. The ridge 603b4 is a part having a ridge shape, and is configured to be able to be disposed in the position adjustment groove 603a2 of the 1 st connecting arm portion 603 a. Two screw holes 603b3 are formed in the raised strip 603b4, respectively.

In a state where the raised strip portion 603b4 is disposed in the position adjustment groove 603a2, two 3 rd fixing screws 613 are inserted through the two position adjustment holes 603a1 and screwed into the two screw holes 603b 3. This enables the 1 st joint arm portion 603a and the 2 nd joint arm portion 603b to be fixed integrally. At this time, the length of the coupling arm portion 603 in the direction parallel to the axis of the rotating shaft 71 (hereinafter referred to as the 3 rd direction D3) can be adjusted by loosening the screws of the two 3 rd fixing screws 613 and sliding the ridge portion 603b4 with respect to the position adjustment groove 603a 2. That is, the length of the connecting arm portion 603 in the 3 rd direction D3 can be adjusted by changing the relative positions of the 1 st connecting arm portion 603a and the 2 nd connecting arm portion 603 b. After the length is adjusted, the screwing of the two 3 rd fixing screws 613 is tightened, whereby the length of the connecting arm portion 603 in the 3 rd direction D3 can be kept constant. The adjustable range of the length of the connecting arm portion 603 in the 3 rd direction D3 is determined by the major diameter of the ellipse of the position adjustment hole 603a 1. The larger the major diameter dimension, the larger the adjustable range.

The 3 rd connecting arm portion 603c includes a shaft connecting portion 603c1, two screw holes 603c2, and a ridge portion 603c 3.

The shaft coupling portion 603c1 is provided as a through hole configured to allow the rotating shaft 71 to be inserted therethrough. The shaft coupling portion 603c1 includes a notch portion 603c4 that engages with the positioning portion 71a of the rotating shaft 71. The 3 rd coupling arm portion 603c rotates about the rotation shaft 71 in response to the rotation of the rotation shaft 71. The two screw holes 603c2 are configured to be screwed with the 4 th fixing screws 614, respectively. The ridge 603c3 is a part having a ridge shape, and is configured to be able to be disposed in the position adjustment groove 603b2 of the 2 nd connecting arm portion 603 b. Two screw holes 603c2 are formed in the raised strip 603c3, respectively.

In a state where the raised strip portion 603c3 is disposed in the position adjustment groove 603b2, two 4 th fixing screws 614 are inserted through the two position adjustment holes 603b1 and screwed into the two screw holes 603c 2. This enables the 2 nd connecting arm portion 603b and the 3 rd connecting arm portion 603c to be integrally fixed. At this time, the length of the coupling arm portion 603 in the direction perpendicular to the axis of the rotating shaft 71 (hereinafter referred to as the 2 nd direction D2) can be adjusted by loosening the screwing of the two 4 th fixing screws 614 and sliding the ridge portion 603c3 with respect to the position adjustment groove 603b 2. That is, the length of the connecting arm portion 603 in the 2 nd direction D2 can be adjusted by changing the relative positions of the 2 nd connecting arm portion 603b and the 3 rd connecting arm portion 603 c. After the length is adjusted, the screwing of the two 4 th fixing screws 614 is tightened, whereby the length of the connecting arm portion 603 in the 2 nd direction D2 can be kept constant. The adjustable range of the length of the connecting arm portion 603 in the 2 nd direction D2 is determined by the major diameter of the ellipse of the position adjustment hole 603b 1. The larger the major diameter dimension, the larger the adjustable range. Further, the 2 nd direction D2 is a direction parallel to a virtual plane perpendicular to the extension line L1 of the rotation shaft 71 (specifically, the extension line L1 of the central axis of the rotation shaft 71), and is a direction intersecting the extending direction of the nozzle arm portion 601. In other words, "a direction intersecting with the extending direction of the nozzle arm portion 601", that is, "a direction not parallel to the extending direction of the nozzle arm portion 601".

The rotating shaft 71 includes a screw hole 71b at an end connected to the connecting arm portion 603. The screw hole 71b is configured to be screwed with the 5 th fixing screw 615. In a state where the end portion of the rotating shaft 71 is disposed at the shaft coupling portion 603c1, the 5 th fixing screw 615 is screwed into the screw hole 71b, whereby the coupling arm portion 603 (specifically, the 3 rd coupling arm portion 603c) and the rotating shaft 71 can be integrally fixed.

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.

The nozzle arm portion 601 is configured to extend in a direction parallel to a virtual plane perpendicular to the axial direction of the rotating shaft 71 when connected to the connecting arm portion 603. In other words, when the nozzle holder 60 is coupled to the rotation shaft 71, the nozzle arm 601 is arranged in a state of extending in a direction parallel to the virtual plane.

The nozzle holder 60 configured as described above includes a portion (in other words, the 3 rd coupling arm portion 603c) extending in the 1 st direction D1 with an end portion coupled to the pivot shaft 71 as a starting point. The 1 st direction D1 is a direction parallel to a virtual plane perpendicular to the axial direction of the rotating shaft 71 and parallel to the extending direction of the nozzle arm 601. The nozzle holder 60 includes a portion extending in the 2 nd direction D2 with the end of the 3 rd connecting arm portion 603c as a starting point (in other words, a portion of the 2 nd connecting arm portion 603 b). The nozzle holder 60 includes a portion extending in the 3 rd direction D3 with a part of the 2 nd connecting arm portion 603b as a starting point (in other words, the 1 st connecting arm portion 603a and another part of the 2 nd connecting arm portion 603 b). The nozzle holder 60 includes a portion extending in the 1 st direction D1 with the 1 st connecting arm portion 603a as a starting point (in other words, the nozzle arm portion 601). As shown in fig. 6 and 7, the tip holder 60 is configured such that the tip of the tip 3 is disposed on an extension line L1 of the rotating shaft 71 (specifically, an extension line L1 of the central axis of the rotating shaft 71).

The 1 st direction D1 and the 2 nd direction D2 are both directions parallel to a virtual plane perpendicular to the axial direction of the rotating shaft 71. However, the 1 st direction D1 and the 2 nd direction D2 are not parallel to each other and are different from each other.

The nozzle holder 60 extends from the shaft connecting portion 603c1 in the 1 st direction D1 away from the rotation shaft 71. Then, the tip holder 60 is further extended in the 2 nd direction and further extended in the 3 rd direction parallel to the rotation shaft 71. The nozzle holder 60 is further formed to extend in the 1 st direction D1 in a direction approaching the extension line L1 of the rotation shaft 71. Thus, the tip holder 60 is configured such that the tip of the tip 3 can be arranged on the extension line L1 of the rotation shaft 71.

As shown in fig. 10, the nozzle holder 60 is configured to define the position of the wire W by a pulley 601a2 and supply the wire W to an insertion hole 3a (see fig. 8 and 9) of the nozzle 3. The wire W supplied to the insertion hole 3a is inserted through from the rear end toward the front end of the insertion hole 3 a. Thus, the nozzle 3 is configured to supply the wire rod W to the workpiece 6 from the tip of the nozzle 3 (in other words, the tip of the insertion hole 3 a).

[1-5. expansion part of tip holder ]

As shown in fig. 6 to 9, the tip holder 60 includes a1 st expansion and contraction part 605, a2 nd expansion and contraction part 606, and a3 rd expansion and contraction part 607.

The 1 st expansion/contraction part 605 includes two screw holes 601a3, a columnar part 601a4, two position adjustment holes 601b1, a position adjustment groove 601b2, and two 1 st fixing screws 611. As described above, the length of the nozzle arm portion 601 can be adjusted by loosening the screwing of the two 1 st fixing screws 611 and changing the relative positions of the 1 st nozzle arm portion 601a and the 2 nd nozzle arm portion 601 b. At this time, the length dimension of the nozzle arm portion 601 is a dimension of the nozzle arm portion 601 in a direction parallel to a virtual plane perpendicular to the axial direction of the rotating shaft 71 and parallel to the extending direction of the nozzle arm portion 601 (in other words, the 1 st direction D1). That is, the 1 st expansion and contraction section 605 is configured to be able to adjust the relative position in the 1 st direction D1 among the relative positions of the nozzle fixing section 601a1 and the shaft coupling section 603c1 of the nozzle holder 60. The 1 st expansion/contraction operation can be performed by using the 1 st expansion/contraction part 605. The 1 st expansion and contraction operation corresponds to an operation of expanding and contracting the 1 st gap between the shaft coupling portion 603c1 and the tip fixing portion 601a 1. The 1 st interval corresponds to an interval between the shaft coupling portion 603c1 and the tip fixing portion 601a1 in the 1 st direction D1.

The 2 nd expansion part 606 includes two screw holes 603c2, a ridge 603c3, two position adjustment holes 603b1, a position adjustment groove 603b2, and two 4 th fixing screws 614. As described above, by loosening the screwing of the two 4 th fixing screws 614 and changing the relative positions of the 2 nd connecting arm portion 603b and the 3 rd connecting arm portion 603c, the length of the connecting arm portion 603 in the 2 nd direction D2 can be adjusted. That is, the 2 nd expansion/contraction part 606 is configured to be able to adjust the relative position in the 2 nd direction D2 among the relative positions of the nozzle fixing part 601a1 of the nozzle holder 60 and the shaft coupling part 603c 1. The 1 st expansion/contraction section 606 is used to perform the 2 nd expansion/contraction operation. The 2 nd expansion and contraction operation corresponds to an operation of expanding and contracting the 2 nd interval between the shaft coupling portion 603c1 and the tip fixing portion 601a 1. The 2 nd interval corresponds to an interval between the shaft coupling portion 603c1 and the tip fixing portion 601a1 in the 2 nd direction D2.

The 3 rd expansion part 607 includes two screw holes 603b3, a ridge 603b4, two position adjustment holes 603a1, a position adjustment groove 603a2, and two 3 rd fixing screws 613. As described above, by loosening the screwing of the two 3 rd fixing screws 613 and changing the relative positions of the 1 st connecting arm portion 603a and the 2 nd connecting arm portion 603b, the length of the connecting arm portion 603 in the 3 rd direction D3 can be adjusted. That is, the 3 rd expansion/contraction portion 607 is configured to be able to adjust the relative position in the 3 rd direction D3 among the relative positions of the tip fixing portion 601a1 and the shaft coupling portion 603c1 of the tip holder 60. By using the 3 rd expansion/contraction part 607, the 3 rd expansion/contraction operation can be performed. The 3 rd expansion and contraction operation corresponds to an operation of expanding and contracting the 3 rd gap between the shaft coupling portion 603c1 and the tip fixing portion 601a 1. The 3 rd interval corresponds to an interval between the shaft coupling portion 603c1 and the tip fixing portion 601a1 in the 3 rd direction D3.

As described above, the nozzle holder 60 includes the 1 st expansion and contraction section 605, the 2 nd expansion and contraction section 606, and the 3 rd expansion and contraction section 607 in the 1 st region from the nozzle fixing portion 601a1 to the shaft connecting section 603c1 via the nozzle arm portion 601 and the connecting arm portion 603. The 1 st expansion/contraction unit 605 and the 2 nd expansion/contraction unit 606 are configured to expand and contract in a direction parallel to a virtual plane perpendicular to the axial direction of the rotating shaft 71. The 1 st expansion/contraction section 60 is configured to expand and contract in the 1 st direction D1, the 2 nd expansion/contraction section 606 is configured to expand and contract in the 2 nd direction D2, and the 3 rd expansion/contraction section 607 is configured to expand and contract in the 3 rd direction D3.

[1-6. effects ]

As described above, the winding machine 100 includes the nozzle rotating unit 70. The nozzle rotating unit 70 includes the nozzle holder 60 and the nozzle 3. The nozzle holder 60 includes a1 st expansion/contraction part 605, a2 nd expansion/contraction part 606, and a3 rd expansion/contraction part 607.

The nozzle holder 60 can change the relative positions of the nozzle fixing portion 601a1 and the shaft connecting portion 603c1 by extending and contracting the 1 st expansion/contraction portion 605, the 2 nd expansion/contraction portion 606, and the 3 rd expansion/contraction portion 607, respectively. That is, the relative position of the nozzle fixing portion 601a1 with respect to the shaft coupling portion 603c1 is adjusted by using the 1 st expansion/contraction portion 605, the 2 nd expansion/contraction portion 606, and the 3 rd expansion/contraction portion 607, whereby the tip position of the nozzle 3 can be brought closer to the extension line L1 of the rotation shaft 71. The nozzle holder 60 having the tip end position of the nozzle 3 adjusted in this manner can suppress the tip end position of the nozzle 3 from being separated from the extension line L1 of the pivot shaft 71 when the pivot shaft 71 performs the pivot operation.

Therefore, in a series of operations of winding the wire rod W around the workpiece 6, the nozzle holder 60 can suppress the occurrence of slack in the wire rod W accompanying the rotational operation of the nozzle holder 60 when the winding state and the wire processing state are switched to each other. Therefore, the nozzle holder 60 can manufacture a coil product requiring high accuracy in the arrangement accuracy of the wire rod W.

Further, the nozzle holder 60 is not configured to include only one expansion/contraction portion, but includes a plurality of expansion/contraction portions (the 1 st expansion/contraction portion 605, the 2 nd expansion/contraction portion 606, and the 3 rd expansion/contraction portion 607) having different expansion/contraction directions from each other. By providing the plurality of extensible parts, the nozzle holder 60 can change the tip positions of the nozzle fixing part 601a1 and the nozzle 3 in a plurality of directions. Therefore, the nozzle holder 60 expands the adjustable range of the tip position of the nozzle 3, compared to the case where the tip position of the nozzle fixing portion 601a1 and the nozzle 3 can be changed in one direction.

Therefore, the nozzle holder 60 expands the adjustable range of the tip end position of the nozzle 3 when the nozzle holder 60 performs the turning operation, and therefore, the wire W can be prevented from being loosened by the turning operation of the nozzle holder 60. Therefore, the tip holder 60 can manufacture a coil product in which the arrangement accuracy of the wire rod W is high.

Further, since the nozzle rotating unit 70 includes the nozzle holder 60, similarly to the nozzle holder 60, it is possible to suppress the occurrence of slack in the wire rod W accompanying the rotating operation of the nozzle holder 60. Therefore, the nozzle rotating unit 70 can manufacture a coil product in which the arrangement accuracy of the wire rod W is high.

Further, since the winding machine 100 includes the nozzle holder 60, similarly to the nozzle holder 60, it is possible to suppress the occurrence of slack in the wire rod W accompanying the rotational operation of the nozzle holder 60. Therefore, the winding machine 100 can manufacture a coil product in which the arrangement accuracy of the wire rod W is high.

[1-6. sentence correspondences ]

Here, the correspondence relationship between the sentences is explained.

The nozzle holder 60 corresponds to an example of a nozzle holder.

[2 ] other embodiments ]

The embodiments of the present disclosure have been described above, but the present disclosure is not limited to the above embodiments, and can be implemented in various ways within a scope not departing from the gist of the present disclosure.

(2a) In the above embodiment, the winding machine 100 including two yarn nipples 3 has been described, but the number of the yarn nipples 3 is not limited to two. For example, the winding machine may be configured to include one nozzle 3. In this case, the winding machine may be configured to include one nozzle holder 60. Alternatively, the winding machine may have a structure including three or more nozzles 3. In this case, the winding machine may be configured to include three or more nozzle holders 60.

(2b) In the above embodiment, the nozzle holder 60 including three extensible parts has been described, but the number of extensible parts is not limited to three. For example, the nozzle holder may be configured to include any one of the 1 st expansion/contraction part 605, the 2 nd expansion/contraction part 606, and the 3 rd expansion/contraction part 607. The nozzle holder can be expanded and contracted by the one expansion and contraction portion to change the relative positions of the nozzle fixing portion 601a1 and the shaft coupling portion 603c 1. That is, the relative position of the mouthpiece fixing section 601a1 with respect to the shaft coupling section 603c1 is adjusted using the expansion section, whereby the tip position of the mouthpiece 3 can be brought closer to the extension line L1 of the rotation shaft. The nozzle holder having the tip end position of the nozzle 3 adjusted in this way can reduce the distance by which the tip end position of the nozzle 3 is away from the extension line L1 of the pivot shaft 71 before and after the switching between the winding state and the thread processing state (in other words, before and after the pivoting operation by the pivot shaft 71).

For example, the nozzle holder may be configured to include any two of the 1 st expansion and contraction part 605, the 2 nd expansion and contraction part 606, and the 3 rd expansion and contraction part 607. The nozzle holder can be expanded and contracted independently of the two expansion and contraction portions, and the positions of the nozzle fixing portion 601a1 and the tip end of the nozzle 3 can be changed in a plurality of directions. Therefore, the nozzle holder expands the adjustable range of the tip position of the nozzle 3, compared to the case where the tip position of the nozzle fixing portion 601a1 and the nozzle 3 can be changed in one direction.

Further, the nozzle holder is provided with the 1 st expansion/contraction section 605 and the 2 nd expansion/contraction section 606, and is capable of expanding and contracting in two different directions (the 1 st direction D1 and the 2 nd direction D2) out of directions parallel to a virtual plane perpendicular to the axial direction of the rotation shaft 71. This nozzle holder can thereby adjust the tip of the nozzle 3 in any direction parallel to the virtual plane.

(2c) The functions of one constituent element in the above-described embodiments may be shared by a plurality of constituent elements, or the functions of a plurality of constituent elements may be integrated into one constituent element. At least a part of the structure of the above embodiment may be replaced with a known structure having the same function. And a part of the constitution of the above embodiment may be omitted. At least a part of the structure of the above embodiment may be added to or replaced with the structure of the other embodiment. All the aspects included in the technical idea defined only by the terms described in the claims are embodiments of the present disclosure.

Claims (7)

1. A tip holder configured to hold a tip holding a wire for forming a coil, the tip holder characterized in that,

the nozzle holder is coupled to the rotating shaft,

the tip holder includes:

a nozzle fixing portion configured to fix the nozzle;

a shaft coupling portion configured to be coupled to the rotating shaft;

a nozzle arm portion that includes the nozzle fixing portion and is configured to extend in a direction parallel to a virtual plane perpendicular to an axial direction of the rotation shaft;

a connecting arm portion that includes the shaft connecting portion and is configured to connect the nozzle arm portion and the rotating shaft in a state where the nozzle fixing portion and the shaft connecting portion are separated from each other; and

an extensible part configured to extend and contract in a direction parallel to the virtual plane in a1 st region that reaches the shaft coupling part from the nozzle fixing part via the nozzle arm part and the coupling arm part, and configured to extend and contract in a direction parallel to the virtual plane

The telescopic part comprises a1 st telescopic part, a2 nd telescopic part and a3 rd telescopic part,

the 1 st expansion/contraction section is configured to expand/contract in a1 st direction parallel to the virtual plane and parallel to an extending direction of the nozzle arm section,

the 2 nd expansion/contraction section is configured to expand/contract in a2 nd direction parallel to the virtual plane and intersecting with an extending direction of the nozzle arm section,

the 3 rd expansion/contraction part is configured to expand and contract in a3 rd direction parallel to the axial direction of the rotating shaft.

2. The tip holder according to claim 1,

the 1 st expansion part is arranged on the nozzle arm part,

the 2 nd expansion part is provided on the connecting arm part,

the 3 rd expansion part is provided on the connecting arm part.

3. The tip holder according to claim 1 or 2,

in the 1 st region, the 1 st expansion part, the 2 nd expansion part, and the 3 rd expansion part are arranged in this order from the tip fixing part toward the shaft connecting part via the tip arm part and the connecting arm part, and toward the 1 st expansion part, the 3 rd expansion part, and the 2 nd expansion part.

4. A nozzle rotating unit is characterized by comprising:

a nozzle holder, which is the nozzle holder according to any one of claims 1 to 3;

a nozzle fixed to the nozzle fixing portion of the nozzle holder;

a rotating shaft coupled to the shaft coupling portion of the nozzle holder; and

and a drive actuator configured to drive the rotary shaft to rotate.

5. A winding machine configured to wind a wire material for forming a coil around a workpiece having a plurality of poles protruding radially inward from a yoke forming an outer periphery, the winding machine comprising:

a workpiece holding portion configured to hold the workpiece; and

a nozzle rotating unit which is the nozzle rotating unit of claim 4, and

the winding machine is configured to switch the nozzle holder to any one of a winding state and a wire processing state by rotation of the nozzle holder in accordance with rotation of the rotating shaft in a series of operations in which the nozzle holder winds the wire rod around the workpiece,

in the winding state, the winding machine moves the wire nozzle and/or the workpiece in the circumferential direction and the thickness direction of the workpiece, respectively, to cause the wire nozzle to perform relative circulating movement with respect to the plurality of poles, respectively, thereby winding the wire rod on the plurality of poles, respectively;

in the wire processing state, the winding machine disposes the wire material at a position extremely different from the plurality of poles, using the wire nozzle disposed at a position different from the winding state by rotation of the rotating shaft.

6. A winding machine is characterized by comprising:

a workpiece holding portion configured to hold a workpiece on which a wire rod for forming a coil is to be wound, the workpiece including a yoke portion that forms an outer periphery of the workpiece, and a plurality of poles that protrude radially inward from the yoke portion; and

a nozzle rotating unit according to claim 4, wherein the drive actuator is configured to switch the nozzle holder to a winding state or a thread processing state by rotation of the nozzle holder in accordance with rotation of the rotating shaft, and the drive actuator is configured to switch the nozzle holder to the winding state or the thread processing state, and further configured to rotate the nozzle holder in accordance with rotation of the rotating shaft

The nozzle holder in the winding state causes the nozzle to perform relative circulating movement with respect to the plurality of poles by moving the nozzle and/or the workpiece in a circumferential direction and a thickness direction of the workpiece, respectively, thereby winding the wire rod onto the plurality of poles, respectively,

the nozzle holder in the wire processing state disposes the wire material to a position extremely different from the plurality of positions using the nozzle disposed to a position different from the winding state by rotation of the rotating shaft.

7. A method for changing a relative position of a tip fixing portion with respect to a shaft coupling portion, the method comprising: performing at least one of a1 st telescopic motion, a2 nd telescopic motion, and a3 rd telescopic motion,

the 1 st expansion and contraction operation is an operation of expanding and contracting a1 st interval between the shaft coupling portion and the nozzle fixing portion, wherein the 1 st interval corresponds to an interval along a1 st direction, the 1 st direction is parallel to a virtual plane and parallel to an extending direction of a nozzle arm portion, the virtual plane is perpendicular to an axial direction of a rotating shaft, the nozzle fixing portion is provided at the nozzle arm portion, the extending direction of the nozzle arm portion is parallel to the virtual plane, the shaft coupling portion is configured to be coupled to the rotating shaft, the shaft coupling portion is provided at a coupling arm portion configured to couple the nozzle arm portion and the rotating shaft in a state where the nozzle fixing portion and the shaft coupling portion are separated from each other;

the 2 nd expansion and contraction operation is an operation of expanding and contracting a2 nd interval between the shaft coupling portion and the nozzle fixing portion, wherein the 2 nd interval corresponds to an interval along a2 nd direction, and the 2 nd direction is parallel to the virtual plane and intersects with an extending direction of the nozzle arm portion;

the 3 rd expansion and contraction operation is an operation of expanding and contracting a3 rd interval between the shaft coupling portion and the tip fixing portion, wherein the 3 rd interval corresponds to an interval along a3 rd direction, and the 3 rd direction is parallel to an axial direction of the rotation shaft.

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