WO2024053656A1

WO2024053656A1 - Wire delivery device and winding device equipped with same

Info

Publication number: WO2024053656A1
Application number: PCT/JP2023/032445
Authority: WO
Inventors: 宏樹斎藤; 康之河西
Original assignee: Ｎｉｔｔｏｋｕ株式会社
Priority date: 2022-09-07
Filing date: 2023-09-06
Publication date: 2024-03-14
Also published as: JP2024037297A

Abstract

This wire delivery device (60) comprises: a fixed chuck device (61) for clamping a wire (11) in an openable manner; a movable chuck device (63) which is provided in a movable manner and clamps the wire (11) in an openable manner; an actuator (62) which causes the movable chuck device (63) to approach or be away from the fixed chuck device (61); a plurality of support pieces (71) which are provided side by side between the fixed chuck device (61) and the movable chuck device (63) and support the wire (11) extending between the fixed chuck device (61) and the movable chuck device (63); and a disposition means (76) for disposing the plurality of support pieces (71) at predetermined intervals between the fixed chuck device (61) and the movable chuck device (63).

Description

Wire rod feeding device and wire winding device equipped with the same

The present invention relates to a wire rod feeding device and a wire winding device equipped with the same.

BACKGROUND ART Conventionally, as a winding device for winding a wire, a device is known that winds a wire that has been wound and stored on a drum or the like while pulling it out from the drum or the like. In such a winding device, the wire drawing resistance increases as the cross-sectional area of the wire increases, so winding devices are known that are equipped with a wire feeding device that draws the wire from a drum or the like and feeds it to the winding mechanism. (Refer to JPH10-303055A).

This wire rod feeding device includes a fixed chuck device that releasably clamps the wire rod, a movable chuck device, and an actuator that moves the movable chuck device toward and away from the fixed chuck device, and the movable chuck device that clamps the wire rod by the actuator. is brought close to the fixed chuck device with the wire rod released, and the wire rod is fed out from the fixed chuck device side.

In a wire rod feeding device, if the amount of wire rod fed out at one time is increased, there is a problem that the wire rod being fed out will buckle. For this reason, in the wire rod feeding device described in JPH10-303055A, as shown in FIG. 11, a tube-shaped wire rod guide 2 having a length exceeding the feeding amount SL is provided in the movable chuck device 3, so that the wire rod guide 2 can enter. A wire guide path 4a having a length exceeding the payout amount SL is formed in the fixed chuck device 4. By paying out the wire 1 while passing through the wire guide 2, the thick wire 1 can be paid out without buckling.

However, in the above wire rod feeding device in which the tubular wire rod guide 2 is provided in the movable chuck device 3, a wire rod guide path 4a into which the wire rod guide 2 having a length exceeding the feeding amount SL can enter is formed in the fixed chuck device 4. As a space for installing the device, at least a length exceeding twice the amount of one payout SL is required, and if the amount of one payout is large, there is a problem that the device becomes large.

Furthermore, the wire rods wound by the winding device are not limited to round wires with a round cross section, but also square wires with a rectangular cross section. When a flat wire with a rectangular cross section is inserted into a tubular wire guide with a circular cross section, buckling in the thickness direction of the flat wire cannot be effectively prevented due to the existence of a gap between the wire guide and the flat wire. There are also problems.

An object of the present invention is to provide a wire rod feeding device and a wire winding device using the same, which can feed the wire rod while preventing buckling even if the wire rod is a rectangular wire without increasing the size of the device. shall be.

According to an aspect of the present invention, the wire feeding device includes a fixed chuck device that releasably clamps the wire, a movable chuck device that is movably provided and releasably clamps the wire, and the fixed chuck. an actuator that moves the movable chuck device closer to or away from the device; and an actuator that is provided side by side between the fixed chuck device and the movable chuck device and supports the wire extending between the fixed chuck device and the movable chuck device. The apparatus includes a plurality of support pieces and an arrangement means for arranging the plurality of support pieces between the fixed chuck device and the movable chuck device at a predetermined interval.

1 is a plan view showing a winding device according to an embodiment of the present invention. It is a front view showing a winding device of an embodiment of the present invention. FIG. 2 is a diagram showing a state in which a wire rod is fed out by a wire rod feeding device, and is a plan view corresponding to FIG. 1 . FIG. 3 is a front view corresponding to FIG. 2, showing a state in which the wire rod is fed out by the wire rod feeding device. FIG. 3 is a side view of the winding device viewed from the wire supply side. 3 is a sectional view taken along line AA in FIG. 2. FIG. 3 is a sectional view taken along line BB in FIG. 2. FIG. 2 is a sectional view taken along line CC in FIG. 1. FIG. It is a figure which shows the procedure of winding an edgewise coil by a winding device. It is a figure which shows the procedure of winding an edgewise coil by a winding device. It is a figure which shows the procedure of winding an edgewise coil by a winding device. It is a figure which shows the procedure of winding an edgewise coil by a winding device. It is a figure which shows the procedure of winding an edgewise coil by a winding device. It is a figure which shows the procedure of winding an edgewise coil by a winding device. FIG. 2 is a diagram showing a conventional wire rod feeding device.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show a winding device 10 equipped with a wire rod feeding device 60 according to an embodiment of the present invention. In the figure, three axes, X, Y, and Z, which are perpendicular to each other, are set and explained. The X-axis extends in the horizontal front-back direction, the Y-axis extends in the horizontal-lateral direction, and the Z-axis extends in the vertical direction.

The wire wound by the winding device 10 is a square wire with a rectangular cross section and an insulating film formed on the surface. In this embodiment, a case will be described in which a rectangular wire 11 having a wider width than its thickness is used as the rectangular wire.

The rectangular wire 11 is wound around a reel (not shown) serving as a wire supply source and installed near the winding device 10. The winding device 10 includes a wire rod feeding device 60 that is provided on the table 13 and longitudinally feeds out the rectangular wire 11 fed from the reel, and a wire rod feeding device 60 that is provided on the table 13 adjacent to the wire rod feeding device 60 and is connected to the wire rod feeding device 60. It has a winding mechanism 30 that bends and winds the fed flat wire 11.

As shown in FIGS. 2 and 4, the winding mechanism 30 winds the flat wire 11 in the width direction. The winding mechanism 30 of this embodiment includes a shaft 31 that is provided on a fixed base 29 and has a circular cross section that contacts the side surface of the flat wire 11 that is on the inside of the bending of the flat wire 11, and a shaft that rotates around the shaft 31. The present invention includes a bender 32 that bends the rectangular wire 11 along a line 31, and a turning drive mechanism 33 that turns the bender 32.

A cylindrical portion 29a having a vertical center axis is formed on the fixed base 29, and a roller sleeve 34 is vertically fixed to the cylindrical portion 29a with a screw 34a. The shaft 31 is rotatably and axially movably supported by the roller sleeve 34 via a bearing 31c.

The shaft 31 is provided in the vertical direction. The shaft 31 has a winding portion 31 a around which the flat wire 11 is wound, and a supported portion 31 b supported by the roller sleeve 34 . The hanging portion 31a and the supported portion 31b are coaxially and continuously provided.

The roller sleeve 34 includes a support portion 34b that rotatably and axially movably supports the supported portion 31b of the shaft 31, and an encircling portion 34c that surrounds the hanging portion 31a of the shaft 31. The support portion 34b and the surrounding portion 34c are coaxially formed. The support portion 34b is embedded and fixed in the cylindrical portion 29a of the fixed base 29. The surrounding portion 34c is formed so as to protrude upward from the upper surface of the fixing base 29, and the rectangular wire 11 fed out by the wire feeding device 60 is placed on its upper edge.

The swing drive mechanism 33 rotates a swing gear 33c that is rotatably supported around a roller sleeve 34 on the upper surface of the fixed base 29 via a bearing 33b, a drive gear 33d that meshes with the swing gear 33c, and a drive gear 33d. It has a motor 33e. A bender 32 is attached to the swing gear 33c.

A controller (not shown) is electrically connected to the motor 33e, and control commands from the controller are output. When the motor 33e rotates the drive gear 33d according to a command from the controller, the swing gear 33c that meshes with the drive gear 33d rotates around the central axis of the shaft 31, and the bender 32 follows an arcuate trajectory around the shaft 31. Hold it and turn it.

The bender 32 bends the rectangular wire 11 so as to wrap around the shaft 31 by rotating together with the turning gear 33c while pressing the rectangular wire 11 around the shaft 31.

Further, the winding mechanism 30 includes a press mechanism 40 that presses the flat wire 11 wound around the shaft 31 in the axial direction of the shaft 31 when the flat wire 11 is bent by the bender 32. The press mechanism 40 includes a disc-shaped flange 41 coaxially formed on the upper end of the shaft 31 that protrudes upward from the surrounding portion 34c of the roller sleeve 34, and an actuator 42 that drives the shaft 31 on which the flange 41 is formed in the axial direction. and has.

The actuator 42 includes a main body 42a and a rod 42b that moves forward and backward in the Z-axis direction with respect to the main body 42a. The main body 42a is supported by the fixed base 29 via the support base 42c and the table 13. The lower end of the supported portion 31b of the shaft 31 is rotatably connected to the tip of the rod 42b via a bearing 42d and a joint 42e.

A controller (not shown) is electrically connected to the actuator 42, and control commands from the controller are output. When the actuator 42 expands and contracts in response to a command from the controller, the flange 41 moves up and down together with the shaft 31, and the state in which the rectangular wire 11 is pressed and the state in which the pressure is released are switched.

As shown in FIG. 1, a notch 41a is formed in a part of the flange 41 that holds the flat wire 11. The winding mechanism 30 includes a flange moving mechanism 46 (see FIG. 2) that moves the flange 41 so that the rectangular wire 11 is not pressed by the notch 41a.

Returning to FIG. 2, the flange moving mechanism 46 includes a motor 47 provided parallel to the actuator 42 and a transmission mechanism 48 that transmits the rotation of the motor 47 to the shaft 31. The transmission mechanism 48 is rotatably attached to a drive pulley 48a rotationally driven by a motor 47 and a lower end of a cylindrical portion 29a of a fixed base 29, and a shaft 31 is configured to be slidable in the axial direction via a spline but not rotatable. The timing belt 48c is provided with a driven pulley 48b inserted through the pulley 48b, and a timing belt 48c wrapped around the

pulleys

48a and 48b.

A controller (not shown) is electrically connected to the motor 47, and control commands from the controller are output. When the motor 47 is driven by a command from the controller, the drive pulley 48a rotates, and the rotation is transmitted to the driven pulley 48b via the belt 48c, and the shaft 31 spline-coupled to the driven pulley 48b rotates together with the flange 41.

As shown in FIGS. 1 to 4, the wire rod feeding device 60 that feeds out the flat wire 11 to the winding mechanism 30 includes a fixed chuck device 61 that releasably holds the flat wire 11 pulled out from the reel and stretched straight. , a movable chuck device 63 that is spaced apart from the fixed chuck device 61 in the Y-axis direction and movable in the Y-axis direction and that holds the rectangular wire 11 in a releasable manner; An actuator 62 that moves the device closer or further away is provided.

The fixed chuck device 61 is an air cylinder attached to the fixed base 29 adjacent to the winding mechanism 30. The fixed chuck device 61 includes a main body 61a attached to the fixed base 29 adjacent to the winding mechanism 30 in the Y-axis direction, and a pair of clamping

pieces

61b and 61c that can be moved into and out of contact with each other by air pressure. The pair of clamping

pieces

61b and 61c protrude from the main body 61a in the X-axis direction and are provided to sandwich the flat wire 11 from above and below in the vertical direction.

When the pair of clamping

pieces

61b and 61c approach each other due to air pressure, they sandwich the rectangular wire 11 passing therebetween from above and below in the vertical direction, thereby prohibiting movement of the rectangular wire 11, as shown in FIG. On the other hand, when the pair of clamping

pieces

61b and 61c are separated from each other by air pressure, as shown in FIG. is allowed.

As shown in FIG. 2, the fixed base 29 provided with the winding mechanism 30 and the fixed chuck device 61 is attached to the base 14 provided on the table 13. An actuator 62 is attached to the table 13.

The actuator 62 of this embodiment includes a lateral guide 62a disposed on the table 13 along the Y-axis, which is the feeding direction of the flat wire 11, and a lateral guide 62a disposed parallel to the lateral guide 62a, with a spiral male thread disposed on the surface. a lateral rotation shaft 62b, a lateral movement member 62d that is screwed onto the lateral rotation shaft 62b by a ball screw and is movable along the lateral guide 62a by rotation of the lateral rotation shaft 62b; It has a servo motor 62c as a lateral drive source that rotationally drives the motor 62b.

A controller (not shown) is electrically connected to the servo motor 62c, and control commands from the controller are output. When the servo motor 62c is driven by a command from the controller, the lateral rotating shaft 62b rotates and the lateral moving member 62d moves along the lateral guide 62a. A movable chuck device 63 is attached to the lateral moving member 62d via an angle member 62e.

As shown in FIGS. 1 to 5, the movable chuck device 63 includes a mounting plate 64 attached to the angle member 62e, a movable wall 66 erected on the upper surface of the mounting plate 64, and a movable chuck device 63 mounted on the lower surface of the mounting plate 64. and an air cylinder 67. A recess 66a through which the rectangular wire 11 can pass is formed in the lower part of the movable wall 66 facing the mounting plate 64. The rod 67a of the air cylinder 67 can penetrate the mounting plate 64 and enter the recess 66a.

As shown in FIG. 4, when the rod 67a of the air cylinder 67 enters the recess 66a, it comes into contact with the rectangular wire 11 passing through the recess 66a and presses against the recess 66a. Movement of line 11 is prohibited. On the other hand, as shown in FIG. 2, when the rod 67a retreats into the main body 67b, it releases the clamping of the rectangular wire 11 passing through the recess 66a, allowing the rectangular wire 11 to move.

The movable chuck device 63 moves the movable chuck device 63 holding the rectangular wire 11 between the fixed chuck devices by the actuator 62 attached to the lateral moving member 62d via the angle member 62e, as shown by the solid arrow in FIG. 61, the rectangular wire 11 gripped by the movable chuck device 63 moves in the Y-axis direction. At this time, if the fixed chuck device 61 releases the flat wire 11, the flat wire 11 is fed out from the fixed chuck device 61 toward the winding mechanism 30 in the longitudinal direction (Y-axis direction).

Thereafter, when the fixed chuck device 61 clamps the flat wire 11, the feeding of the flat wire 11 is stopped. In this state, when the movable chuck device 63 releases the rectangular wire 11, the actuator 62 can move the movable chuck device 63 away from the fixed chuck device 61, as shown by the broken line arrow in FIG.

When moving the movable chuck device 63 away from the fixed chuck device 61, that is, when returning the movable chuck device 63 to the reel side, the fixed chuck device 61 clamps the flat wire 11, so that the flat wire 11 is fed out to the winding mechanism 30 side. The rectangular wire 11 is prevented from moving back together with the movable chuck device 63.

With the flat wire 11 gripped again by the movable chuck device 63 that has moved to the reel side and the fixed chuck device 61 released, the movable chuck device 63 is moved again toward the fixed chuck device 61 as shown in FIG. This allows the flat wire 11 to be fed out again. By repeating the above series of operations of the movable chuck device 63 and the fixed chuck device 61, the rectangular wire 11 can be sequentially fed out.

As shown in FIGS. 1 and 2, the wire rod feeding device 60 has a support piece 71 that supports the rectangular wire 11 in a straight state extending between the fixed chuck device 61 and the movable chuck device 63. A plurality of them are provided in line between the chuck devices 63. A support rod 68 is provided extending between the fixed chuck device 61 and the movable chuck device 63 and passing through the movable chuck device 63. In this embodiment, a pair of support rods 68 are provided, and a plurality of support pieces 71 are movably provided on the pair of support rods 68. Only one support rod 68 may be provided, or three or more support rods 68 may be provided.

As shown in FIG. 6, on the fixed base 29 to which the fixed chuck device 61 is attached, a fixed wall 69 is provided adjacent to the fixed chuck device 61 so as to face the movable wall 66. A recess 69a through which the rectangular wire 11 can pass is formed in the lower part of the fixed wall 69 facing the fixed base 29. The pair of support rods 68 are provided on the fixed wall 69 at a predetermined interval in the X-axis direction so as to sandwich the recess 69a from both sides in the X-axis direction, and extend through the movable wall 66 in the Y-axis direction to mutually extend. installed in parallel.

As shown in FIG. 5, the movable wall 66 is formed with holes 66b through which the pair of support rods 68 pass. A sleeve 66c for ensuring smooth movement of the pair of support rods 68 is attached to the hole 66b.

As shown in FIG. 7, the support piece 71 that supports the flat wire 11 includes a rectangular plate-shaped movable guide 72 extending in the X-axis direction and a presser plate 73 attached to the movable guide 72. A pair of insertion holes 72a are formed in the movable guide 72 on both sides in the X-axis direction, into which the pair of support rods 68 are respectively inserted. Attachment holes 72b penetrating in the Z-axis direction are formed further outside the pair of insertion holes 72a, respectively.

On the lower surface of the movable guide 72, a groove 72c having a cross section slightly larger than that of the flat wire 11 is formed extending in the Y-axis direction. A pressing plate 73 is attached to the lower surface of the movable guide 72 with the rectangular wire 11 extending in the Y-axis direction accommodated in the groove 72c. A female threaded hole 73a is formed in the holding plate 73 facing the mounting hole 72b, and the holding plate 73 is attached to the movable guide 72 by screwing a male screw 74 inserted into the mounting hole 72b.

Returning to FIGS. 1 to 4, a plurality of movable guides 72 are provided on the pair of support rods 68 between the fixed chuck device 61 and the movable chuck device 63. The wire rod feeding device 60 includes an arrangement means for arranging a plurality of support pieces 71 between the fixed chuck device 61 and the movable chuck device 63 at predetermined intervals.

As shown in FIGS. 1 and 3, the arrangement means in this embodiment is an elastic member interposed between each of the plurality of support pieces 71, specifically a coil spring 76. The coil spring 76 is also interposed between the fixed wall 69 and the support piece 71 and between the movable wall 66 and the support piece 71, respectively. The distance between adjacent support pieces 71 is determined by the natural length and spring constant of the coil spring 76. In this embodiment, the plurality of interposed coil springs 76 are all the same. Since the plurality of coil springs 76 attempt to widen the distance between adjacent supporting pieces 71 with uniform biasing force, the plurality of supporting pieces 71 are arranged equally between the fixed chuck device 61 and the movable chuck device 63. . That is, between the fixed chuck device 61 and the movable chuck device 63, the spacing between adjacent support pieces 71 is the same. Specifically, in a state where the movable chuck device 63 is the most distant from the fixed chuck device 61, the plurality of support pieces 71 are arranged equally. When the plurality of support pieces 71 are arranged equally, the movable chuck device 63 can move smoothly with respect to the fixed chuck device 61. Furthermore, when the intervening coil springs 76 are the same, the coil springs 76 having the same specifications can be used, so that costs can be reduced.

A counterbore hole 72d into which the end of the coil spring 76 can enter is formed in the center of both sides of the support piece 71. As shown in FIG. 3, when the adjacent support pieces 71 come close to each other, the compressed coil spring 76 is accommodated across the counterbore holes 72d of the adjacent support pieces 71.

A reinforcing rod 77 is further provided on the fixed wall 69 attached to the fixed base 29 adjacent to the fixed chuck device 61. The reinforcing rod 77 is provided extending between the fixed chuck device 61 and the movable chuck device 63 and penetrating the movable chuck device 63. The reinforcing rod 77 has a larger diameter than the pair of support rods 68. A hole 66d through which a reinforcing rod 77 passes is formed in the movable wall 66. A cylinder sleeve 66e for ensuring smooth movement of the reinforcing rod 77 is attached to the hole 66d.

As shown in FIGS. 1 to 4 and 8, the fixed base 29 is provided with a support member 54 that prevents the rectangular wire 11 fed out in the Y-axis direction by the wire feeding device 60 from swinging in the X-axis direction. .

The support member 54 is attached to the fixed base 29 facing the fixed chuck device 61. The support member 54 has a horizontal groove 54a into which the rectangular wire 11 fed out in the Y-axis direction enters, and a vertical groove 54b that accommodates a pair of clamping

pieces

61b and 61c that clamp the rectangular wire 11. It is formed at a portion facing the device 61.

The rectangular wire 11 extending in the Y-axis direction enters and is housed in the horizontal groove 54a, allowing the rectangular wire 11 to be fed out in the Y-axis direction, which is the longitudinal direction, while moving in the X-axis direction, which is the width direction. is prevented.

As shown in FIGS. 1 to 4, a guide member 55 is provided on the fixed base 29. The guide member 55 is in sliding contact with the tip edge of the flat wire 11 . In this embodiment, the guide member 55 has a sliding contact portion 55a having a wedge-shaped cross section. The sliding contact portion 55a is formed so that its surface (upper surface) is inclined with respect to the horizontal plane, and the tip edge 11c (FIG. 9C) of the first bent flat wire 11 comes into sliding contact with the surface.

Since the tip edge of the flat wire 11 comes into sliding contact with the surface of the sliding contact portion 55a, the flat wire 11 is inclined with respect to the horizontal plane, so that the bent portion of the flat wire 11 may interfere with the fed-out flat wire 11. is prevented.

Next, the operation of the winding device 10 will be explained.

In this embodiment, the wire is a rectangular wire 11 that is wide in relation to its thickness, and by winding the rectangular wire 11 in the width direction, a track-shaped edgewise coil 16 (FIGS. 9 and 10) is formed. Let's explain how to obtain it.

Winding a track-shaped edgewise coil using the winding device 10 includes, after the preparation step, a wire bending step in which the flat wire 11 is wound around the shaft 31 by the winding mechanism 30 and bent into a U-shape; This is performed by repeating the wire rod feeding step of feeding out the rectangular wire 11 using the wire rod feeding device 60.

These operations will be explained below.

<Winding preparation process>
First, both the fixed chuck device 61 and the movable chuck device 63 are opened, and the flat wire 11 fed out from the reel is allowed to pass through the fixed chuck device 61 and the movable chuck device 63.

Specifically, as shown in FIG. 2, in the movable chuck device 63, the rod 67a of the air cylinder 67 is withdrawn to the main body 67b, and the rectangular wire 11 is passed through the recess 66a of the movable wall 66. Then, the rectangular wire 11 that has passed through the movable chuck device 63 is sequentially inserted into the grooves 72c (FIG. 7) in the plurality of support pieces 71, and the rectangular wire 11 going from the movable chuck device 63 to the fixed chuck device 61 is inserted into the plurality of support pieces. 71 in order.

Then, the rectangular wire 11 that has passed through the last support piece 71 on the fixed wall 69 side is passed through the recess 69a (FIG. 6) of the fixed wall 69, and as shown in FIG. pass through. At this time, as shown in FIG. 4, the pair of clamping pieces 61b of the fixed chuck device 61 are in a state separated from each other, and the rectangular wire 11 is passed between the pair of clamping pieces 61b. Then, the rectangular wire 11 that has passed through the support member 54 is inserted between the shaft 31 and the bender 32 in the winding mechanism 30, as shown in FIG.

In this state, the pair of clamping pieces 61b of the fixed chuck device 61 are brought close to each other, and the rectangular wire 11 passing therebetween is clamped from above and below in the vertical direction, thereby prohibiting movement of the rectangular wire 11.

After the flat wire 11 is clamped by the fixed chuck device 61, the actuator 62 of the wire feeding device 60 moves the movable chuck device 63 away from the fixed chuck device 61. Then, in the state where the movable chuck device 63 is separated from the fixed chuck device 61, the rod 67a of the air cylinder 67 enters the recess 66a in the movable chuck device 63 to clamp the rectangular wire 11 and prohibit the movement of the rectangular wire 11. Then, preparations are made for the next feeding of the flat wire 11.

<First wire bending process>
From this state, bending of the flat wire 11 is started. First, the bender 32 is rotated 180 degrees together with the rotation gear 33c by the rotation drive mechanism 33 of the winding mechanism 30, and the rectangular wire 11 is bent so as to be wrapped around the shaft 31, as shown in FIG. 9A. At this time, the press mechanism 40 (FIG. 2) uses the flange 41 to press the rectangular wire 11 that is bent along the shaft 31 from the thickness direction.

At this time, the flange 41 is arranged in such a direction that the notch portion 41a is located on the wire rod feeding device 60 side. That is, the cutout portion 41a is located at the opening of the flat wire 11 that is bent into a U-shape. As a result, all portions of the flat wire 11 that are bent into a U-shape are held down by the flange 41, so that the portion of the flat wire 11 that is routed around the shaft 31 does not bulge due to bending or wrinkles due to bending. Prevented.

After the bending is completed, the bender 32 is rotated 180 degrees in the opposite direction by the rotation drive mechanism 33 and returned to the initial position. Simultaneously with or before or after returning the bender 32, the pressing mechanism 40 releases the flat wire 11 from being held down by the flange 41.

<Wire rod feeding process>
Next, as shown in FIG. 9B, the flat wire 11 is fed out in the longitudinal direction by the wire feeding device 60, and the newly fed out flat wire 11 is inserted between the shaft 31 and the bender 32, and the first bent portion is 11a is moved in the Y-axis direction away from the shaft 31. The amount of rectangular wire 11 fed out at this time is half the amount required for one winding of the desired edgewise coil.

To feed out the flat wire 11 by the wire rod feeding device 60, as shown in FIGS. 1 and 2, the fixed chuck device 61 is opened to release the clamping of the flat wire 11, and the actuator 62 grips the flat wire 11. This is done by moving the movable chuck device 63 toward the fixed chuck device 61, as shown in FIGS. 3 and 4. An amount of flat wire 11 equal to the amount of movement of movable chuck device 63 is paid out from fixed chuck device 61 toward winding mechanism 30 .

Here, the amount by which the flat wire 11 is fed out at one time is the amount by which the movable chuck device 63 approaches the fixed chuck device 61. When the amount of one feeding increases, the distance between the movable chuck device 63 and the fixed chuck device 61 increases, and the possibility that the rectangular wire 11 buckles during feeding increases.

However, in the wire rod feeding device 60 of this embodiment, a plurality of support pieces 71 that support the rectangular wire 11 between the movable chuck device 63 and the fixed chuck device 61 are provided at equal intervals. Therefore, since the flat wire 11 between the movable chuck device 63 and the fixed chuck device 61 is supported by the plurality of support pieces 71, the flat wire 11 will not buckle even if the amount of payout of the flat wire 11 is increased.

After the required amount of flat wire 11 has been paid out, the pair of clamping pieces 61b of the fixed chuck device 61 are brought close to each other, and movement of the flat wire 11 is prohibited by sandwiching the flat wire 11 passing between them.

At the same time, the movable chuck device 63 releases the clamping of the rectangular wire 11, and the actuator 62 moves the movable chuck device 63 away from the fixed chuck device 61. Then, in a state where the movable chuck device 63 is separated from the fixed chuck device 61, the movable chuck device 63 clamps the flat wire 11 and prohibits its movement, and prepares for feeding out the next flat wire 11.

<Wire bending process>
After the flat wire 11 is newly paid out, as shown in FIG. 9C, the bender 32 is rotated again by the turning drive mechanism 33, and the flat wire 11 is bent so as to be wrapped around the shaft 31. At this time, the press mechanism 40 presses the rectangular wire 11, which is bent along the shaft 31, from the thickness direction using the flange 41.

When rotating the bender 32 again, the portion 11b beyond the U-shaped bent portion 11a is lifted by the guide member 55 and passed through the notch 41a. As a result, the portion 11b is detached from the shaft 31, so that it intersects with the newly drawn out rectangular wire 11 without interfering with it.

<Flange movement process>
Next, as shown in FIG. 10A, the flange 41 is moved and the notch 41a formed in the flange 41 is placed at a position corresponding to the straight portion 11e of the rectangular wire 11 beyond the newly bent portion 11d. In other words, it is moved to a position perpendicular to the feeding direction of the flat wire 11.

The movement of the flange 41 is performed by a flange movement mechanism 46 (FIG. 2). Specifically, by driving the motor 47 in response to a command from the controller, the drive pulley 48a is rotated to rotate the driven pulley 48b via the belt 48c, and the shaft 31 spline-coupled to the driven pulley 48b is connected to the flange 41. and rotate it as shown by the dashed-dotted line arrow.

As a result, during the wire bending process, the notch portion 41a facing the wire rod feeding device 60 side is rotated approximately 90 degrees and placed at a position perpendicular to the feeding direction of the flat wire 11.

<Wire rod feeding process>
Next, as shown in FIG. 10B, the flat wire 11 is fed out in the longitudinal direction by the wire feeding device 60, and the newly fed out flat wire 11 is inserted between the shaft 31 and the bender 32.

When feeding out the flat wire 11, the straight portion 11e of the flat wire 11 is passed through the notch 41a and removed from around the shaft 31.

As a result, the track-shaped edgewise coil 16 wound once moves in the Y-axis direction away from the shaft 31. The amount of rectangular wire 11 fed out at this time is half the amount required for one winding of the desired edgewise coil.

To feed out the flat wire 11, as described above, the clamping of the flat wire 11 by the fixed chuck device 61 is released, and the movable chuck device 63 that clamps the flat wire 11 is moved toward the fixed chuck device 61 by the actuator 62. This is done by At this time, the plurality of support pieces 71 provided at equal intervals between the movable chuck device 63 and the fixed chuck device 61 support the rectangular wire 11 between the movable chuck device 63 and the fixed

chuck device

61, and 11 from buckling.

After the required amount of flat wire 11 has been paid out, the fixed chuck device 61 clamps the flat wire 11 again and prohibits movement of the flat wire 11. At the same time, the actuator 62 moves the movable chuck device 63, which has released the clamping of the rectangular wire 11, away from the fixed chuck device 61. Then, the movable chuck device 63 is separated from the fixed chuck device 61, clamps the flat wire 11, prohibits its movement, and prepares for the next feeding of the flat wire 11.

<Further wire bending process>
After the flat wire 11 is newly fed out, the bender 32 is rotated again by the turning drive mechanism 33 as shown by the dashed-dotted line arrow in FIG. 10C, and the flat wire 11 is bent so as to be wrapped around the shaft 31. At this time, the press mechanism 40 again presses the rectangular wire 11, which is bent along the shaft 31, from the thickness direction using the flange 41.

Thereby, the newly drawn out rectangular wire 11 can be bent into a U-shape. At this time, the flange 41 holds down all parts of the flat wire 11 that is bent into a U-shape, so that the portion of the flat wire 11 that is routed around the shaft 31 is prevented from bulging due to bending and from bending wrinkles due to bending. be done.

After this bending is completed, the bender 32 is rotated 180 degrees in the opposite direction by the rotation drive mechanism 33 and returned to the initial position. At the same time or before or after this, the press mechanism 40 releases the pressing of the flat wire 11 by the flange 41.

Thereafter, by sequentially repeating the above-described <flange moving process> to <further wire bending process>, the rectangular wires 11 are aligned and wound to form a wire of a predetermined width and a predetermined layer. As a result, the edgewise coil 16 extending in the Z-axis direction is formed on the upper surface of the flange 41.

After forming the desired edgewise coil 16 in this way, the rectangular wire 11 is cut using a cutter device (not shown) and the edgewise coil 16 is removed. This completes a series of winding operations.

In the winding device 10, the size and shape of the edgewise coil 16 can be easily changed by changing the amount of flat wire 11 fed out by the wire feeding device 60, the radius of curvature of the shaft 31, etc.

In particular, changing the amount of feeding out of the rectangular wire 11 by the wire feeding device 60 is easy because only the amount of movement of the movable chuck device 63 by the actuator 62 is changed. Even when the flat wire 11 is fed out by a large amount, the flat wire 11 is supported by the plurality of support pieces 71, so that the flat wire 11 can be fed out while preventing buckling.

Furthermore, since the plurality of support pieces 71 are arranged at predetermined intervals and adjacent support pieces 71 can be moved toward and away from each other, the wire rod feeding device 60 is prevented from increasing in size. Further, when increasing or decreasing the amount of feed of the flat wire 11, this can be done by increasing or decreasing the number of support pieces 71, so buckling of the flat wire 11 can be effectively prevented.

Since the plurality of support pieces 71 are movably provided on the support rod 68, the plurality of support pieces 71 can be easily arranged in a straight line, and the number of support pieces 71 can be easily increased or decreased. On the other hand, if the number of support pieces 71 increases, the support rod 68 may become curved. Therefore, the plurality of support pieces 71 are prevented from being provided in a curved manner. If there is no possibility that the support rod 68 will bend, the reinforcing rod 77 is not necessary.

In the winding device 10 including the wire rod feeding device 60 and the winding mechanism 30, the flat wire 11 is accurately fed out without buckling by the wire feeding device 60, so that a coil of a desired size, for example, an edgewise coil can be obtained. be able to.

In the above embodiment, the wire rod is a rectangular wire 11 whose width is wider than its thickness. However, this is just an example, and the wire does not have to be a rectangular wire. For example, it may be a square wire with a rectangular cross section, or a round wire with a circular cross section.

In this case, it is necessary to change the support piece 71 that supports the wire according to the cross-sectional shape of the wire, but since the support rod 68 is movably provided with a plurality of support pieces 71, the support Changing the piece 71 is also easy.

Furthermore, in the embodiment described above, the flat wire 11 is wound in the width direction to obtain an edgewise coil. However, this is just an example, and a rectangular coil or a circular coil may also be obtained.

Further, in the above embodiment, the configuration in which the arrangement means is a coil spring 76 interposed between a plurality of support pieces 71 has been described. However, this is just an example, and the arrangement means may be an elastic member other than the coil spring 76.

Although the embodiments of the present invention have been described above, the above embodiments merely show a part of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments. do not have.

This application claims priority based on Japanese Patent Application No. 2022-142029 filed with the Japan Patent Office on September 7, 2022, and the entire contents of this application are incorporated herein by reference.

Claims

A wire rod feeding device,
a fixed chuck device that releasably holds the wire;
a movable chuck device that is movably provided and that grips the wire in a releasable manner;
an actuator that moves the movable chuck device toward or away from the fixed chuck device;
a plurality of support pieces that are provided side by side between the fixed chuck device and the movable chuck device and support the wire extending between the fixed chuck device and the movable chuck device;
A wire rod feeding device, further comprising: arranging means for arranging the plurality of support pieces at predetermined intervals between the fixed chuck device and the movable chuck device.
The wire rod feeding device according to claim 1,
The arrangement means is a wire rod feeding device that arranges the plurality of support pieces equally between the fixed chuck device and the movable chuck device.
The wire rod feeding device according to claim 1 or 2,
In the wire rod feeding device, the arrangement means is an elastic member interposed between each of the plurality of support pieces.
The wire rod feeding device according to claim 3,
In the wire rod feeding device, the elastic member is a coil spring.
The wire rod feeding device according to claim 1 or 2,
A wire rod feeding device further comprising a support rod extending between the fixed chuck device and the movable chuck device and penetrating the movable chuck device, and on which the plurality of support pieces are movably provided.
The wire rod feeding device according to claim 5,
A wire rod feeding device further comprising a reinforcing rod extending between the fixed chuck device and the movable chuck device and passing through the movable chuck device.
A winding device comprising: the wire rod feeding device according to claim 1; and a winding mechanism that winds the wire rod fed out from the wire rod feeding device.