JP7632045B2 - Nozzle components and wire winding device - Google Patents

Description

The present invention relates to a nozzle component and a wire winding device.

A conventional wire winding device is described in JP 2017-11132 A (Patent Document 1). This wire winding device includes a nozzle component having multiple wire insertion holes into which wires can be inserted, and revolves the nozzle component around a core to twist and wind multiple wires around the core.

JP 2017-11132 A

When winding a stranded wire section made by twisting multiple wires together around a core, it is necessary to adjust the twist pitch of the stranded wire section depending on the shape of the core winding section, for example, the cross-sectional area of the winding section or the circumferential length of the winding section. In other words, when winding a stranded wire section around a winding section of a different shape, it is necessary to change the twist pitch.

In order to change the twist pitch of the twisted wire section in the conventional wire winding device, it is possible to change the radius of rotation of the nozzle part around the core. However, in this case, it is necessary to set the radius of rotation of the nozzle part so that it can be changed significantly, which creates the problem of the wire winding device becoming larger.

Alternatively, it is possible to prepare multiple nozzle parts with different spacing between wire insertion holes to match the shape of the winding core. However, in this case, it is necessary to prepare multiple nozzle parts to match the shape of the winding core, which creates the problem of a large number of parts.

Therefore, the present disclosure aims to provide a nozzle component and a wire winding device that can reduce the size of the device and the number of parts.

In order to solve the above problems, a nozzle component according to one aspect of the present disclosure comprises:
A plurality of nozzles each having a wire insertion hole into which a wire can be inserted;
and an adjustment mechanism capable of adjusting the intervals between the plurality of nozzles.

According to the above aspect, the adjustment mechanism can adjust the spacing between the multiple nozzles, so that when a wire is passed through each nozzle and the nozzle part is revolved around the core to wind the multiple wires around the core while twisting them together, a coil part with the desired twist pitch can be manufactured without changing the rotation radius of the nozzle part around the core. Also, since there is no need to change the rotation radius of the nozzle part around the core, the rotation radius can be kept small and constant, which allows the wire winding device to be made smaller. Also, since an adjustment mechanism that can adjust the spacing between the multiple nozzles is provided, there is no need to prepare multiple nozzle parts with different nozzle spacing, and the number of parts can be reduced.

Preferably, in one embodiment of the nozzle part,
The adjustment mechanism includes:
A support having a through hole extending along a first direction;
a plurality of nozzle support portions that are detachably inserted into the through holes and support the nozzles along the first direction;
and at least one block portion that is removably inserted into the through hole and positions the plurality of nozzle support portions relative to the support body.

According to the above embodiment, the nozzle support part and the block part are detachable from the through hole, so the relative positions of the nozzle support part and the block part can be changed. This makes it possible to adjust the spacing between multiple nozzles with a simple configuration.

In one embodiment of the nozzle part, the shape of the inner surface of the through hole is preferably rectangular when viewed from the first direction, and the shape of the outer surface of the nozzle support part and the shape of the outer surface of the block part are preferably quadrangular.

According to the above embodiment, the nozzle support part is prevented from rotating around the first direction within the through hole, and the nozzle support part can be reliably positioned relative to the through hole.

Preferably, in one embodiment of the nozzle part,
The adjustment mechanism includes:
A support body having a through hole extending along a first direction and a screw hole extending along a second direction perpendicular to the first direction and communicating with the through hole;
a plurality of nozzle support parts that are inserted into the through holes so as to be movable in the second direction and support the nozzles along the first direction;
a threaded portion that is screwed into the screw hole and has a tip that is rotatably connected to the nozzle support portion,
When the screw portion advances or retreats into the screw hole, the nozzle support portion reciprocates through the through hole in the second direction.

Here, the second direction perpendicular to the first direction does not only mean that the second direction is completely perpendicular to the first direction, but also includes the second direction being perpendicular to the first direction with an error of about ±5°.

According to the above embodiment, the nozzle support part reciprocates through the through hole in the second direction as the screw part advances and retreats into the screw hole, so the relative positions of the multiple nozzle support parts can be changed. This makes it possible to adjust the spacing between the multiple nozzles with a simple configuration.

Preferably, in one embodiment of the wire winding device,
The nozzle component;
The nozzle drive unit revolves the nozzle part around a core to twist and wind the wires inserted into the nozzles around the core.

According to the embodiment, the nozzle parts are provided, so the device can be made smaller and the number of parts can be reduced.

The nozzle components and wire winding device according to one aspect of the present disclosure allow the device to be made smaller and the number of parts to be reduced.

FIG. 1 is a simplified perspective view showing a first embodiment of a wire winding device. FIG. 2 is a bottom view of the nozzle component. This is a cross-sectional view taken along line AA in FIG. FIG. 13 is a bottom view of the nozzle part showing a state in which the interval between the first nozzle and the second nozzle is changed. FIG. 13 is a bottom view of the nozzle part showing a state in which the interval between the first nozzle and the second nozzle is changed. 1A to 1C are explanatory diagrams illustrating a wire winding method using a wire winding device. FIG. 11 is an XY plan view illustrating a wire winding method. FIG. 11 is an explanatory diagram illustrating a wire winding method. FIG. FIG. 4 is an explanatory diagram illustrating a twisted portion of a wire. FIG. 13 is a bottom view of a second embodiment of a nozzle component. This is a cross-sectional view taken along line AA in FIG.

The nozzle components and wire winding device, which are one aspect of the present disclosure, are described in detail below with reference to the illustrated embodiments. Note that some of the drawings are schematic and may not reflect actual dimensions or proportions.

First Embodiment
Fig. 1 is a simplified perspective view showing a first embodiment of a wire winding device. As shown in Fig. 1, the wire winding device is a device that winds a first wire 21 and a second wire 22 around a core 10 of a coil component. The wire winding device winds the first and second wires 21 and 22 around the core 10 to manufacture a coil component. The coil component is, for example, a common mode choke coil.

The core 10 has a winding core portion 13, a first flange portion 11 provided at a first end of the winding core portion 13, and a second flange portion 12 provided at a second end of the winding core portion 13. The core 10 is made of a material such as alumina (non-magnetic material), Ni-Zn ferrite (magnetic material, insulator), or resin.

The shape of the winding core 13 is, for example, a rectangular parallelepiped. The shape of the first flange 11 and the shape of the second flange 12 are, for example, a rectangular flat plate. A first electrode 31 and a second electrode 32 are provided on the bottom surface of the first flange 11 and the bottom surface of the second flange 12, respectively. The material of the first and second electrodes 31, 32 is, for example, Ag. The first and second electrodes 31, 32 are electrically connected to electrodes of a mounting board (not shown). In the following drawings, the first and second electrodes 31, 32 are shown hatched.

The first and second wires 21 and 22 have a conductor and a coating that covers the conductor. The first wire 21 is wound around the core 10 to form a primary coil. The second wire 22 is wound around the core 10 to form a secondary coil.

As shown in FIG. 1, the wire winding device has first and second tensioners 51 and 52, a chuck 70, a nozzle component 60, and a nozzle drive unit 75.

The first tensioner 51 applies tension to the first wire 21, and the second tensioner 52 applies tension to the second wire 22. The nozzle part 60 inserts the first wire 21 tensioned by the first tensioner 51, and inserts the second wire 22 tensioned by the second tensioner 52.

A pulley 76 is disposed between the first and second tensioners 51, 52 and the nozzle part 60 to guide the first and second wires 21, 22. The chuck 70 grips and fixes the first flange 11 of the core 10. At this time, the core 10 is placed so that the long axis L of the core 10 faces the nozzle part 60.

The nozzle drive unit 75 revolves the nozzle part 60 around the core 10, twisting the first and second wires 21, 22 inserted into the nozzle part 60 and winding them around the core 10. In other words, the nozzle drive unit 75 revolves the nozzle part 60 around the long axis L of the core 10 and moves it along the long axis L direction of the core 10.

Figure 2 is a bottom view of the nozzle part 60, and Figure 3 is a cross-sectional view taken along line A-A in Figure 2. As shown in Figures 2 and 3, the nozzle part 60 has a first nozzle 61 and a second nozzle 62, and an adjustment mechanism 80 that can adjust the distance between the first nozzle 61 and the second nozzle 62.

The first nozzle 61 has a wire insertion hole 61a into which the first wire 21 can be inserted. The second nozzle 62 has a wire insertion hole 62a into which the second wire 22 can be inserted. The first nozzle 61 and the second nozzle 62 are formed in a cylindrical shape. The length of the first nozzle 61 and the second nozzle 62 is, for example, 50 mm. The first nozzle 61 and the second nozzle 62 are made of, for example, a cemented carbide alloy.

The adjustment mechanism 80 has a support 85, a first nozzle support portion 81, a second nozzle support portion 82, a first block portion 86, and a second block portion 87.

The support 85 has a through hole 85a extending along the first direction D1. The support 85 is formed in a cylindrical shape extending along the first direction D1. The first direction D1 is parallel to the center line C of the cylinder. The shape of the inner surface of the through hole 85a is rectangular when viewed from the first direction D1. When viewed from the first direction D1, the center of gravity of the rectangle coincides with the center line C. In other words, when viewed from the first direction D1, the through hole 85a extends in a direction passing through the center line C, that is, in the radial direction of the circular end surface of the support 85. The circular diameter of the end surface of the support 85 is, for example, 10 mm, and the length of the support 85 in the first direction D1 is, for example, 40 mm. The support 85 is made of, for example, stainless steel.

The first nozzle support part 81 is removably inserted into the through hole 85a and supports the first nozzle 61 along the first direction D1. The first nozzle support part 81 is formed in a prismatic shape extending along the first direction D1. The shape of the outer surface of the first nozzle support part 81 is a rectangle when viewed from the first direction D1. The length of one side of this rectangle is slightly smaller than the length of the short side of the rectangular shape of the inner surface of the through hole 85a. The first nozzle support part 81 has a nozzle insertion hole 81a that extends along the first direction D1 and into which the first nozzle 61 can be inserted. The length of the first nozzle support part 81 in the first direction D1 is, for example, 40 mm. The first nozzle support part 81 is made of, for example, stainless steel.

The second nozzle support part 82 is removably inserted into the through hole 85a and supports the second nozzle 62 along the first direction D1. The second nozzle support part 82 is formed in a prismatic shape extending along the first direction D1. The shape of the outer surface of the second nozzle support part 82 is a rectangle when viewed from the first direction D1. The length of one side of this rectangle is slightly smaller than the length of the short side of the rectangular shape of the inner surface of the through hole 85a. The second nozzle support part 82 has a nozzle insertion hole 82a that extends along the first direction D1 and into which the second nozzle 62 can be inserted. The length of the second nozzle support part 82 in the first direction D1 is, for example, 40 mm. The second nozzle support part 82 is made of, for example, stainless steel.

The first block portion 86 is removably inserted into the through hole 85a. The first block portion 86 is formed in a prismatic shape extending along the first direction D1. The shape of the outer surface of the first block portion 86 is a rectangle when viewed from the first direction D1. The length of one side of this rectangle is slightly smaller than the length of the short side of the rectangular inner shape of the through hole 85a. The length of the first block portion 86 in the first direction D1 is, for example, 40 mm. The first block portion 86 is made of, for example, stainless steel.

The second block portion 87 is removably inserted into the through hole 85a. The second block portion 87 is formed in a prismatic shape extending along the first direction D1. The shape of the outer surface of the second block portion 87 is quadrilateral when viewed from the first direction D1. The length of one side of this quadrilateral is slightly smaller than the length of the short side of the rectangular inner surface shape of the through hole 85a. The length of the second block portion 87 in the first direction D1 is, for example, 40 mm. The second block portion 87 is made of, for example, stainless steel.

The first block portion 86 and the second block portion 87 are inserted into the through hole 85a to position the first nozzle support portion 81 and the second nozzle support portion 82 relative to the support body 85. Specifically, the total length of the other side of the rectangular outer surface shape of the first nozzle support portion 81, the other side of the rectangular outer surface shape of the second nozzle support portion 82, the other side of the rectangular outer surface shape of the first block portion 86, and the other side of the rectangular outer surface shape of the second block portion 87 is slightly smaller than the length of the long side of the rectangular inner surface shape of the through hole 85a. In other words, the entire through hole 85a is filled by the first and second nozzle support portions 81 and 82 and the first and second block portions 86 and 87.

At this time, the inner shape of the through hole 85a is rectangular, and the outer shapes of the first and second nozzle support parts 81, 82 and the first and second block parts 86, 87 are square, so that the first and second nozzle support parts 81, 82 are prevented from rotating about the first direction D1 within the through hole 85a, and the first and second nozzle support parts 81, 82 can be reliably positioned relative to the through hole 85a. The inner shape of the through hole 85a may be oval or elliptical, and the outer shapes of the first and second nozzle support parts 81, 82 and the first and second block parts 86, 87 may be oval or elliptical.

As shown in FIG. 3, on the bottom side of the nozzle part 60, the first end faces of the support 85, the first and second nozzle support parts 81, 82, and the first and second block parts 86, 87 are located on the same plane, and the first end faces of the first and second nozzles 61, 62 are located on the same plane as the first end face of the support 85. On the other hand, on the top side of the nozzle part 60, the second end faces of the support 85, the first and second nozzle support parts 81, 82, and the first and second block parts 86, 87 are located on the same plane, and the second end faces of the first and second nozzles 61, 62 are located in a position that protrudes upward from the second end face of the support 85.

With the above configuration, the first and second nozzle support parts 81, 82 and the first and second block parts 86, 87 are detachable from the through hole 85a, so that the relative positions of the first and second nozzle support parts 81, 82 and the first and second block parts 86, 87 can be changed.

2, by arranging the first and second block parts 86, 87 between the first nozzle support part 81 and the second nozzle support part 82, the first nozzle support part 81 and the second nozzle support part 82 can be separated, and the distance between the first nozzle 61 and the second nozzle 62 can be increased. On the other hand, by arranging the first and second nozzle support parts 81, 82 between the first block part 86 and the second block part 87, as shown in FIG. 4A, the first nozzle support part 81 and the second nozzle support part 82 can be brought closer to each other, and the distance between the first nozzle 61 and the second nozzle 62 can be reduced.

In this way, when viewed from the first direction D1, the first nozzle 61 and the second nozzle 62 can be moved closer to or farther apart along the radial direction passing through the center line C of the support 85. Therefore, the distance between the first nozzle 61 and the second nozzle 62 can be adjusted with a simple configuration.

As shown in FIG. 4B, by preparing a plurality of block parts 86, 88, 89 of different shapes, the adjustment range of the interval between the first nozzle 61 and the second nozzle 62 can be increased. Specifically, a first block part 86, a third block part 88, and a fourth block part 89 are prepared. The third and fourth block parts 88, 89 are the same size and smaller than the first block part 86. By arranging the first nozzle support part 81 between the first block part 86 and the third block part 88 and arranging the second nozzle support part 82 between the first block part 86 and the fourth block part 89, the interval between the first nozzle 61 and the second nozzle 62 can be narrower than the interval in FIG. 2 and wider than the interval in FIG. 4A.

The number of block parts can be freely increased or decreased, as long as there is at least one block part. Even if there is only one block part, the distance between the first nozzle 61 and the second nozzle 62 can be changed by changing the relative positions of the first and second nozzle support parts and the block part.

Next, we will explain the wire winding method using the wire winding device.

First, as shown in FIG. 5, the first and second wires 21 and 22 are passed through the first and second tensioners 51 and 52 and the nozzle part 60 in that order, and the tips of the first and second wires 21 and 22 are fixed to the core 10.

The first and second wires 21, 22 are pulled out from a coil bobbin (not shown). The first tensioner 51 applies tension to the first wire 21. The second tensioner 52 applies tension to the second wire 22.

The first wire 21, tensioned by the first tensioner 51, is passed through the first nozzle 61. The second wire 22, tensioned by the second tensioner 52, is passed through the second nozzle 62.

The first wire 21 is drawn toward the core 10 from the bottom side of the nozzle part 60 where the first nozzle 61 does not protrude, and the tip of the first wire 21 is connected to the first electrode 31 of the first flange 11 of the core 10. The second wire 22 is drawn toward the core 10 from the bottom side of the nozzle part 60 where the second nozzle 62 does not protrude, and the tip of the second wire 22 is connected to the second electrode 32 of the first flange 11 of the core 10.

The first and second wires 21 and 22 are tensioned by the first and second tensioners 51 and 52 between the core 10 and the first and second tensioners 51 and 52. The core 10 is placed on the XY plane so that the long axis L direction connecting the first flange 11 and the second flange 12 coincides with the Z direction.

Then, as shown in the XY plan view of FIG. 6, the nozzle part 60 is revolved around the core 10 so that the relative positions of the first and second nozzles 61, 62 of the nozzle part 60 are constant relative to the first and second tensioners 51, 52, and the first and second wires 21, 22 are twisted and wound around the core 10. In other words, the nozzle part 60 revolves around the core 10 around the long axis L. At this time, the left-right relative positions of the first and second nozzles 61, 62 do not change relative to the long axis L and the first and second tensioners 51, 52.

By revolving the nozzle part 60 in this way, as shown in FIG. 7, it is possible to twist only the first and second wires 21, 22 between the nozzle part 60 and the core 10 without twisting the first and second wires 21, 22 between the first and second tensioners 51, 52 and the nozzle part 60. In addition, by moving the nozzle part 60 along the Z direction from the first flange 11 toward the second flange 12, the first and second wires 21, 22 can be wound from the first flange 11 toward the second flange 12. In this way, the twisted wire part in which the first and second wires 21, 22 are twisted can be wound around the winding core 13 (twist winding), and the coil characteristics can be stabilized. Note that the core 10 may be moved along the long axis L direction of the core 10 relative to the nozzle part 60.

Then, as shown in FIG. 8, the end of the first wire 21 is connected to the first electrode 31 of the second flange 12 of the core 10, and the end of the second wire 22 is connected to the second electrode 32 of the second flange 12 of the core 10. In this way, the coil component 1 is manufactured.

By using the above-mentioned wire winding device, when the nozzle part 60 is revolved around the core 10 and the twisted wire part formed by twisting the first and second wires 21, 22 is wound around the winding core part 13, the twist pitch of the twisted wire part can be changed by changing the distance between the first nozzle 61 and the second nozzle 62.

As shown in FIG. 9, the twist pitch P refers to the length from a specific relative position of the first wire 21 and the second wire 22 to the next initial return to the same relative position when the first wire 21 and the second wire 22 are twisted together. In other words, it refers to the length when the relative position of the twisted first and second wires 21 and 22 rotates from 0° to 360°. The narrower the distance between the first nozzle 61 and the second nozzle 62, the smaller the twist pitch P.

Then, by changing the distance between the first nozzle 61 and the second nozzle 62, the twist pitch P can be changed to correspond to, for example, the shape of the winding core portion 13 of the core 10 (such as the cross-sectional area of the winding core portion 13 and the circumferential length of the winding core portion). In this way, stable characteristics can be obtained by changing the twist pitch P to match the shape of the winding core portion 13. For example, when the cross section of the winding core portion 13 is polygonal, stable characteristics can be obtained by regularly arranging the abdomen or nodes of the twisted wire portion in the cross-sectional shape of the winding core portion 13.

Specifically, as shown in FIG. 9, the abdomen 41 and the node 42 are formed by twisting the first and second wires 21, 22 together. Then, in adjacent turns, the abdomen 41 of one turn can be aligned with the abdomen 41 of the other turn. In this way, by aligning the positions of the abdomen 41 and the node 42, it is possible to suppress variation in characteristics.

According to the above configuration, when the nozzle part 60 is revolved around the core 10 and the first and second wires 21, 22 are twisted and wound around the core 10, the distance between the first nozzle 61 and the second nozzle 62 can be changed to manufacture a coil part 1 with the desired twist pitch P without changing the rotation radius of the nozzle part 60 around the core 10.

In addition, since there is no need to change the rotation radius of the nozzle part 60 around the core 10, the rotation radius can be kept small and constant, which allows the wire winding device to be made smaller. In addition, since an adjustment mechanism 80 is provided that can adjust the spacing between the first nozzle 61 and the second nozzle 62, there is no need to prepare multiple nozzle parts with different nozzle spacing, and the number of parts can be reduced.

With the above configuration, the wire winding device is equipped with a nozzle part 60, which allows the device to be made smaller and reduces the number of parts.

Second Embodiment
Fig. 10 is a bottom view showing a second embodiment of the nozzle part. Fig. 11 is a cross-sectional view taken along line A-A in Fig. 10. The second embodiment differs from the first embodiment in the configuration of the adjustment mechanism. This different configuration will be described below. The other configurations are the same as those of the first embodiment, and description thereof will be omitted.

As shown in Figures 10 and 11, in the nozzle part 60A of the second embodiment, the adjustment mechanism 80A has a support 85, a first nozzle support part 81, a second nozzle support part 82, and a first screw part 91 and a second screw part 92.

The support 85 has a first through hole 851a, a second through hole 852a, and a first screw hole 851b and a second screw hole 852b. The rest of the configuration of the support 85 is the same as that of the first embodiment, and the description thereof is omitted.

The first through hole 851a and the second through hole 852a each extend along the first direction D1. When viewed from the first direction D1, the first through hole 851a and the second through hole 852a each extend in a second direction D2 perpendicular to the first direction D1. The first through hole 851a and the second through hole 852a are spaced apart from each other and arranged side by side in the second direction D2. When viewed from the first direction D1, the second direction D2 is a direction passing through the center line C of the support 85, that is, a radial direction of the circular end face of the support 85.

The first screw hole 851b extends along the second direction D2 and communicates with the first through hole 851a from the outer surface of the support 85. The second screw hole 852b extends along the second direction D2 and communicates with the second through hole 852a from the outer surface of the support 85.

The first nozzle support part 81 and the second nozzle support part 82 have the same configuration as in the first embodiment. The first nozzle support part 81 is inserted into the first through hole 851a so as to be movable in the second direction D2, and supports the first nozzle 61 along the first direction D1. The second nozzle support part 82 is inserted into the second through hole 852a so as to be movable in the second direction D2, and supports the second nozzle 62 along the first direction D1. In other words, the first nozzle support part 81 and the second nozzle support part 82 can approach or move away from each other along a radial direction passing through the center line C of the support body 85 when viewed from the first direction D1.

The first screw portion 91 is screwed into the first screw hole 851b. The tip of the first screw portion 91 is rotatably connected to the first nozzle support portion 81. Specifically, a ball that can be embedded and protrudes is provided on the outer peripheral surface of the tip of the first screw portion 91. The outer peripheral surface of the first nozzle support portion 81 is provided with a hole portion into which the tip of the first screw portion 91 is fitted, and the inner peripheral surface of this hole portion is provided with an annular groove portion into which the ball is fitted. When the tip of the first screw portion 91 is attached to the hole portion of the first nozzle support portion 81, the tip of the first screw portion 91 is pushed into the hole portion of the first nozzle support portion 81, so that the ball is embedded in the outer peripheral surface of the tip of the first screw portion 91, and when the ball reaches the groove portion, it protrudes from the outer peripheral surface of the tip of the first screw portion 91. As a result, the ball fits into the groove portion, and the first screw portion 91 is rotatably connected to the first nozzle support portion 81.

The second screw portion 92 screws into the second screw hole 852b. The tip of the second screw portion 92 is rotatably connected to the second nozzle support portion 82. The structure of the tip of the second screw portion 92 is similar to the structure of the tip of the first screw portion 91, and a detailed description thereof will be omitted.

When the first screw portion 91 advances or retreats into the first screw hole 851b, the first nozzle support portion 81 reciprocates through the first through hole 851a along the second direction D2. Specifically, when the first screw portion 91 advances (threads) into the first through hole 851a, the first nozzle support portion 81 approaches the center line C of the support 85, and when the first screw portion 91 retreats (threads) from the first through hole 851a, the first nozzle support portion 81 moves away from the center line C of the support 85.

By the second screw portion 92 moving forward and backward into the second screw hole 852b, the second nozzle support portion 82 moves back and forth through the second through hole 852a along the second direction D2. Specifically, by the second screw portion 92 screwing forward, the second nozzle support portion 82 approaches the center line C of the support 85, and by the second screw portion 92 screwing back, the second nozzle support portion 82 moves away from the center line C of the support 85.

With the above configuration, the first nozzle support part 81 and the second nozzle support part 82 move closer to or farther away from each other by moving the first and second screw parts 91 and 92 forward and backward, so that the relative positions of the first and second nozzle support parts 81 and 82 can be changed. This makes it possible to adjust the distance between the first nozzle 61 and the second nozzle 62 with a simple configuration.

The first through hole 851a and the second through hole 852a may be connected to each other, that is, they may be one through hole 85a in the first embodiment. Also, the tip of the screw part may not be rotatably connected to the nozzle support part, but may simply abut the outer peripheral surface of the nozzle support part. In this case, an elastic member may be provided on the side of the nozzle support part opposite the screw part when viewed from the first direction, so that the nozzle support part constantly receives an elastic force on the screw part side due to the elastic member. In this way, the nozzle support part moves back and forth through the through hole as the screw part advances and retreats.

The present invention is not limited to the above-described embodiment, and the design can be modified without departing from the spirit of the present invention. For example, the respective characteristic points of the first and second embodiments may be combined in various ways.

In the above embodiment, two wires are wound around the core, but three or more wires may be wound around the core. In this case, there will be three or more nozzles and nozzle support parts.

In the above embodiment, the core is stationary while the nozzle parts revolve around the core, but a core drive unit may be provided that rotates the core in the same direction as the nozzle parts or in the opposite direction to the direction of revolution. This allows a wider range of twist pitch changes.

1 Coil part 10 Core 11 First flange 12 Second flange 13 Winding core 21 First wire 22 Second wire 31 First electrode 32 Second electrode 51 First tensioner 52 Second tensioner 60, 60A Nozzle part 61 First nozzle 61a Wire insertion hole 62 Second nozzle 62a Wire insertion hole 70 Chuck 75 Nozzle drive part 80, 80A Adjustment mechanism 81 First nozzle support part 81a Nozzle insertion hole 82 Second nozzle support part 82a Nozzle insertion hole 85 Support 85a Through hole 851a First through hole 852a Second through hole 851b First screw hole 852b Second screw hole 86-89 First to fourth block parts 91 First screw part 92 Second screw part C Center line D1 First direction D2 Second direction P Twist pitch

Claims (5)

A plurality of nozzles each having a wire insertion hole into which a wire can be inserted;
a support member through which the plurality of nozzles pass and an adjustment mechanism that supports the plurality of nozzles along a first direction ;
the adjustment mechanism supports the plurality of nozzles such that the plurality of nozzles are spaced apart from one another in a direction perpendicular to the first direction and penetrate the support along the first direction;
The adjustment mechanism is capable of adjusting the spacing between the plurality of nozzles . The support body has a through hole extending along the first direction,
The adjustment mechanism includes:
a plurality of nozzle support parts that are detachably inserted into the through holes and support the plurality of nozzles along the first direction;
The nozzle component of claim 1 , further comprising at least one block portion removably inserted into said through hole for positioning said plurality of nozzle supports relative to said support body. The nozzle part according to claim 2, wherein, when viewed from the first direction, the shape of the inner surface of the through hole is rectangular, and the shape of the outer surface of the nozzle support part and the shape of the outer surface of the block part are quadrangular. the support body has a through hole extending along the first direction and a screw hole extending along a second direction perpendicular to the first direction and communicating with the through hole,
The adjustment mechanism includes:
a plurality of nozzle support parts that are inserted into the through holes so as to be movable in the second direction and support the nozzles along the first direction;
a screw portion that is screwed into the screw hole and has a tip that is rotatably connected to the nozzle support portion,
The nozzle component according to claim 1 , wherein the nozzle support portion reciprocates through the through hole in the second direction as the screw portion advances and retreats into the screw hole. A nozzle component according to any one of claims 1 to 4;
a nozzle driving unit that revolves the nozzle part around a core to wind the wires inserted into the nozzles around the core while twisting them together ;
The plurality of wires includes a wire inserted into one of the plurality of nozzles and a wire inserted into another of the plurality of nozzles .

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