JP4428756B2 - Winding device and winding method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a winding apparatus and a winding method for winding a rectangular wire.
[0002]
[Prior art]
In the winding device, the wire rod fed from the nozzle is wound around the outer periphery of the core by, for example, rotation of a spindle that holds the core, and the feed width corresponding to the wire width for each winding of the winding. Thus, by moving the nozzle in the axial direction of the core, aligned winding is performed in which the windings are connected in the axial direction.
[0003]
[Problems to be solved by the invention]
However, in the conventional winding device, since the nozzle is opposed from the direction substantially orthogonal to the core, in the case of a wire having a large wire width such as a flat wire, the wire is twisted. There was a problem that the accuracy of the windings fell.
[0004]
More specifically, as shown in FIG. 6, when winding a flat rectangular wire 2 having a width in the axial direction of the core 3 as a winding core, the nozzle 1 corresponds to the wire width of the rectangular wire 2. The flat wire 2 is wound around the core 3 with an inclination angle corresponding to the feed width.
[0005]
In this way, the rectangular wire 2 is wound around the core 3 with an inclination angle, but when it is fed out from the nozzle 1, it is oriented in a direction perpendicular to the winding core. A compressive stress is generated on the left side (in FIG. 6), and a tensile stress is generated on the other side (the right side in FIG. 6). For this reason, the flat wire 2 is distorted (twisted) by these stresses.
[0006]
The stress generated at the time of aligned winding is naturally absorbed if the wire width is small like a normal round wire and is round, but the wire width is wide like the flat wire 2 and the shape is also A flat object cannot be absorbed naturally and becomes a problem. For example, due to the strain generated in the rectangular wire 2 due to this stress, the sides of the adjacent rectangular wires 2 on the outer periphery of the core 3 may overlap each other or may come into contact with each other and scrape each other. The accuracy of will decrease.
[0007]
The present invention has been made paying attention to such problems, and in a winding device for winding a flat wire around a winding core, it is possible to perform winding without causing distortion in the flat wire. The purpose is to provide.
[0008]
[Means for Solving the Problems]
In the first invention, winding means for winding a flat wire fed from a nozzle rotatable around the shaft around the outer periphery of the core, and the core shaft around the nozzle or the core in synchronization with the winding by the winding means. In a winding apparatus comprising a feeding means for feeding in a direction, nozzle tilting means for tilting the nozzle in a plane parallel to the axis of the nozzle and the axis of the core, and tilting of the nozzle Control means for controlling the nozzle tilting means so that an angle coincides with an inclination angle given to the flat wire by feeding the nozzle or the core by the feeding means when the winding means winds around the core. Equipped with.
[0009]
In the second invention, a rectangular wire fed from a nozzle rotatable around an axis is wound around the outer periphery of the core, and the nozzle or the core is fed in the axial direction of the core in synchronization with the winding. In the winding method in which rectangular wires are aligned and wound on the outer periphery of the core, the nozzle is tilted in a plane parallel to the axis of the nozzle and the axis of the core, thereby The winding is performed after giving the nozzle an inclination angle that coincides with the inclination angle given to the rectangular wire by feeding the nozzle or the winding core during winding.
[0010]
Operation and effect of the invention
In the winding apparatus and winding method of the present invention, the rectangular wire fed out from the nozzle is aligned and wound by being wound around the outer periphery of the core while being fed in the core axis direction. Since a tilt angle equal to the tilt angle given to the flat wire is given based on the feed at, the flat wire is wound straight after being fed out from the nozzle, and no distortion occurs. Therefore, the side portions of the rectangular wires adjacent on the outer periphery of the winding core do not overlap each other or come into contact with each other and scrape each other, and highly accurate aligned winding can be easily performed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0012]
1 to 4 show a winding device of the present embodiment.
[0013]
As shown mainly in FIG. 1, in this winding apparatus, three servos, a left-right movement mechanism (Y-axis movement mechanism) 10, a front-rear movement mechanism (X-axis movement mechanism) 20, and a vertical movement mechanism (Z-axis movement mechanism) 30. A nozzle unit 50 is supported by a three-dimensional movement mechanism composed of a mechanism (ball screw mechanism) via a nozzle unit rotation mechanism 40 so as to be movable in a three-dimensional direction.
[0014]
More specifically, the rectangular frame 11 of the left / right moving mechanism 10 is fixed on the moving mechanism support 6 of the winding device. A screw shaft 12 extending in the left-right direction (Y-axis direction) is rotatably supported on the frame 11, and a pair of moving shafts 13 </ b> A, 13 </ b> B extending in the left-right direction are provided on both front and rear sides of the screw shaft 12. Is supported so as to be slidable in the axial direction. The lower end side of the frame 21 of the front / rear moving mechanism 20 is screwed to the screw shaft 12 and is fixed to the moving shafts 13A and 13B. Thereby, when the screw shaft 12 is rotationally driven by a drive motor (not shown) controlled by a control means (for example, a computer) (not shown), the frame 21 of the forward / backward movement mechanism 20 moves back and forth with respect to the frame 11. It has become.
[0015]
A screw shaft 22 extending in the front-rear direction (X-axis direction) is pivotally supported on the rectangular frame 21 of the front-rear moving mechanism 20, and moving shafts 23 </ b> A and 23 </ b> B extending in the front-rear direction above and below the screw shaft 22 are slidable. It is supported through. The screw shaft 22 is rotationally driven by a drive motor 24 controlled by a control means (not shown), and a moving member 25 is screwed together. The moving shafts 23A and 23B are fixed to the moving member 25, and the frame 31 of the vertical moving mechanism 30 is fixedly supported at one end. Thus, when the screw shaft 22 is rotationally driven by the drive motor 24, the frame 31 of the vertical movement mechanism 30 moves back and forth with respect to the frame 21.
[0016]
The rectangular frame 31 of the vertical movement mechanism 30 is supported by a screw shaft 32 extending in the vertical direction (Z-axis direction), and movable shafts 33A and 33B extending in the vertical direction on the left and right sides of the screw shaft 32 are slidable. It is supported through. The moving member 35 is screwed onto the screw shaft 32 and is fixed to the moving shafts 33A and 33B. And the moving member 41 which is a main-body part of the nozzle part rotation mechanism 40 is fixedly supported by the lower end of moving shaft 33A, 33B. Thereby, when the screw shaft 32 is rotationally driven by a drive motor 34 controlled by a control means (not shown), the moving member 41 moves in the vertical direction with respect to the frame 31.
[0017]
With such a configuration, the nozzle rotating mechanism 40 can be moved to any position in the three-dimensional direction within the stroke range of these moving mechanisms by combining the operations of the left and right moving mechanism 10, the front and rear moving mechanism 20, and the vertical moving mechanism 30. It is possible to move to. Therefore, as will be described later, the nozzle 1 supported by the nozzle rotation mechanism 40 moves to an arbitrary position in the three-dimensional direction within the stroke range of each moving mechanism.
[0018]
The nozzle part rotation mechanism 40 includes a rotation shaft 42 that extends in the Y-axis direction and is supported substantially horizontally by the moving member 41, and a drive motor 43 that is coupled to the rotation shaft 42. The drive motor 43 is controlled by a control means (not shown) so that the rotation angle of the rotation shaft 42 around the Y axis can be changed. A shaft fixing plate 51 a of the main body frame 51 of the nozzle unit 50 is fixed to the rotating shaft 42.
[0019]
The main body frame 51 of the nozzle unit 50 has an L-shaped cross section formed by combining a shaft fixing plate 51a and a nozzle fixing plate 51b extending horizontally (substantially parallel to the rotation shaft 42) from the upper end of the shaft fixing plate 51a. It is a member. The nozzle fixing plate 51b supports the nozzle 1 at a substantially right angle.
[0020]
With such a configuration, the nozzle 1 is suspended vertically downward in the initial state where the nozzle fixing plate 51b is horizontal. However, when the main body frame 51 is rotated by the rotation of the rotating shaft 42, the nozzle fixing plate 51 is tilted. It is designed to tilt by an angle. That is, the nozzle 1 can be tilted in the XZ plane, and the tilt angle can be set to an arbitrary angle by the control means.
[0021]
A flat wire 2 supplied from a wire source (not shown) is guided to the nozzle 1 and fed out from a wire feeding portion 1a at the lower end.
[0022]
The nozzle 1 is rotatable about its axis, and is connected to a drive motor 54 controlled by control means (not shown) via pulleys 52A and 52B and a belt 53. Thus, the angle around the axis of the nozzle 1 can be adjusted by driving the drive motor 54.
[0023]
As shown in FIG. 2, the winding mechanism support 7 of the winding apparatus includes a winding mechanism 60, a core pressing mechanism 80, and a roller mechanism 90.
[0024]
The winding mechanism 60 includes a spindle 61 that extends on the winding mechanism support base 7 in the X-axis direction and is supported substantially horizontally. The spindle 61 is connected to a rotation shaft of a drive motor 65 via pulleys 61 and 63 and a belt 64, and rotates around the axis by driving the drive motor 65.
[0025]
A winding jig 70 is coaxially fixed to the tip of the spindle 61. As shown in FIG. 3, a core fixing hole 71 a is formed in the distal end surface of the main body 71 of the winding jig 70, and the base end of the quadrangular columnar core 3 that is a winding core is fitted with a different diameter. .
[0026]
The tip of the core 3 is held by a U-shaped gripping portion of a core pressing jig 81 that can rotate around the axis of the core pressing mechanism 80. Here, the core pressing mechanism 80 can be moved in the axial direction of the spindle 61 by the driving mechanism 82, and the core pressing jig 81 is held at one end by the winding jig 71 by this movement. And the tip of the core 3 is held.
[0027]
In this way, the core 3 is sandwiched between the winding jig 71 and the core pressing jig 81, held coaxially on the axis along the X axis, and rotates integrally with the spindle 61. Yes.
[0028]
On the side of the winding jig main body 71, a rod-shaped wire pressing member 73 that is rotatable around a shaft 72 that is erected substantially vertically is provided. A shaft member 74 fixed to the side of the winding jig main body 71 passes through the base end portion 73 a of the wire pressing rod 73. A spring 75 is attached to the outer periphery of the shaft member 74, and the spring 75 is interposed between the base end portion 73a and the winding jig main body 71, whereby the wire pressing member 73 is attached in the clockwise rotation direction. It is fast.
[0029]
In addition, the distal end portion of the line pressing member 73 becomes a line pressing portion 73 b positioned on the side of the core 3. The end of the flat wire 2 is urged by the spring 75 to the rotation of the wire holding member 73 by sandwiching the end (winding start end) of the flat wire 2 between the wire holding portion 73b and the core 3. The portion can be fixed to the side portion near the base end of the core 3. The flat wire 2 is fixed by the wire holding member 73 by, for example, manually pushing and spreading between the wire holding portion 73a and the core 3.
[0030]
The roller mechanism 90 includes a moving unit that moves the roller 91 in a direction orthogonal to the core 3 (Y-axis direction), and functions so that the winding end of the flat wire 2 is brought into close contact with the core 3. Specifically, when winding of a predetermined number of turns to the core 3 is completed, the rectangular wire 1 wound by a cutter mechanism (not shown) is cut from the nozzle 1 side to form a winding end end, as shown in FIG. Then, the roller 91 is brought into contact with the winding end of the flat wire 2 wound around the core 3 from the side, and the core 3 is reciprocally rotated in this state so that the winding end is brought into close contact with the core 3.
[0031]
With the above configuration, when the core 3 rotates around the axis together with the spindle 61, the rectangular wire 2 whose end is fixed to the side of the core 3 is wound around the core 3. Simultaneously with this winding, the nozzle unit 50 is moved in the X-axis direction by the back-and-forth moving mechanism 20, and the nozzle 1 is moved in the axial direction from the proximal end side to the distal end side of the core 3. As shown in FIG. 5, the flat wire 2 is aligned and wound along the core 3.
[0032]
In this case, the nozzle 1 can be tilted in the XZ plane with respect to a direction (Z-axis direction) orthogonal to the core 3 extending in the X-axis direction. Therefore, the nozzle rotation mechanism 40 controlled by the control means adjusts the tilt angle θ to an angle equal to the tilt angle of the flat wire 2 at the time of winding, thereby obtaining the flat wire 2 at the time of winding. Distortion can be prevented. That is, in the above-described aligned winding, the flat wire 2 is wound while being inclined by the amount of feed in the axial direction based on the wire width, but the nozzle 1 has an inclination corresponding to this inclination angle in advance. Therefore, the rectangular wire 2 drawn out from the nozzle 1 is wound around the core 3 without being twisted. Therefore, the side portions of the flat wire 2 do not interfere with each other on the outer periphery of the core 3, and precise alignment winding can be easily performed.
[0033]
Next, the winding method according to the present embodiment will be described.
[0034]
In the winding work, first, the core 3 to be wound is set between the winding jig 70 and the core pressing jig 81. Then, the nozzle 1 is moved straight above the core 3 by the three-dimensional moving mechanism.
[0035]
Next, the nozzle 1 is tilted by a predetermined tilt angle θ suitable for the width of the flat wire 2 by driving the nozzle portion rotating mechanism 40. Then, the end of the flat wire 2 fed out from the nozzle 1 is fixed to the side near the base end of the core 3 by the line pressing member 73.
[0036]
In this state, the spindle 61 is rotated and the nozzle 1 is moved in the axial direction of the core 3 in synchronism with the rotation, whereby the rectangular wire 2 is aligned and wound around the outer periphery of the core 3. In this case, since the nozzle 1 is previously given a tilt angle equal to the tilt angle of the flat wire 2 on the core 3, the flat wire 2 is wound around the core 3 in a state where the flat wire 2 is straightly fed out from the nozzle 1. Accordingly, the distortion (twist) of the rectangular wire 2 can be minimized. Therefore, the side portions of the rectangular wires 2 adjacent on the outer periphery of the core 3 do not overlap each other or come into contact with each other and scrape each other, and highly accurate aligned winding can be easily performed. .
[0037]
When the core 3 is thus wound with a predetermined number of turns, the winding end of the flat wire 2 is cut with a cutter mechanism and is brought into close contact with the core 3 with the roller mechanism 90, and the wound core 3 is wound. It removes from between the jig | tool 70 and the core pressing jig 81, and complete | finishes winding work.
[0038]
In the above embodiment, the spindle type winding device 1 has been described as an example. However, the present invention is not limited to such a form. For example, a flyer type winding device (fixed to the tip of the flyer) is used. The present invention can also be applied to a type of winding device in which the nozzle revolves around the core as the flyer rotates.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a part of a winding device according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a part of the winding device.
FIG. 3 is a perspective view showing the winding jig.
FIG. 4 is a perspective view showing an operation of closely attaching a winding end end portion to a core by the roller mechanism.
FIG. 5 is a side view showing a state of winding around the core.
FIG. 6 is a side view showing a state of winding around a core in a conventional winding device.
[Explanation of symbols]
1 Nozzle 2 Flat wire 3 Core 10 Left-right movement mechanism (Y-axis movement mechanism)
20 Forward / backward moving mechanism (X-axis moving mechanism)
30 Vertical movement mechanism (Z-axis movement mechanism)
40 Nozzle part rotation mechanism 50 Nozzle part 60 Winding mechanism 61 Spindle 70 Winding jig

Claims (2)

Winding means for winding a rectangular wire drawn from a nozzle rotatable around an axis around the outer periphery of the core;
In the winding device comprising:
Nozzle tilting means for tilting the nozzle in a plane parallel to the axis of the nozzle and the axis of the core;
The nozzle tilting means is adjusted so that the tilt angle of the nozzle coincides with the tilt angle given to the flat wire by the feed of the nozzle or the core when the winding means winds around the core. And a control means for controlling the winding device. A rectangular wire drawn from a nozzle rotatable around an axis is wound around the outer periphery of the core, and the nozzle or the core is fed in the axial direction of the core in synchronism with the winding to In a winding method in which flat wires are aligned and wound around the outer periphery of the core,
By tilting the nozzle in a plane parallel to the axis of the nozzle and the axis of the winding core, an inclination angle given to the rectangular wire by feeding the nozzle or the winding core when winding on the winding core; A winding method characterized in that the aligned winding is performed after giving a matching tilt angle to the nozzle.

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