JPH0770406B2 - Winding method and device for toroidal core - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a winding method and apparatus for a toroidal core, and more particularly, toroidal winding in a minute hole such as a magnetic head of a VTR or a magnetic disk. The present invention relates to a winding method suitable for a wire and an apparatus thereof.

[Conventional technology]

As a conventional device, as described in U.S. Pat.No. 4,529,138, a wire is fed by a roller along an annular guide, wound around a toroidal core, a part of the wire is gripped by a gripper, and this is pulled. There are those that wind a wire around the core.

[Problems to be solved by the invention]

In the above-mentioned conventional technique, the mechanism for winding the wire around the core is complicated, and this has been an obstacle to speeding up the winding operation. In addition, no consideration is given to a mechanism to prevent the wire tip from buckling and entering the inside of the wire guide when the wire rigidity is low and the core window is small. There was a problem of low sex.

SUMMARY OF THE INVENTION An object of the present invention is to provide a toroidal core winding device and a method thereof capable of continuously and reliably performing a winding operation.

[Means for solving problems]

In order to achieve the above object, the present invention provides, in a toroidal core winding device for winding a wire on a toroidal core, a wire rod supply means for supplying the wire rod and a wire rod supplied by the wire rod supply means. The annular wire guide, a core holding mechanism that holds the toroidal core so that the core window of the toroidal core is located at a part of the annular wire guide, and the annular wire guide is sandwiched. A plurality of pairs of rollers provided at a plurality of positions so that the outer side and the inner side form a pair, and the wire rod is fed along the annular line guide to form a wire ring, and the ring of the rollers of each pair. The retracting mechanism provided inside the wire guide for retracting each roller, and the retracting mechanism that is formed by being guided by the annular wire guide and fed by the plurality of pairs of rollers. Therefore, by retracting each inner roller, a slit-shaped line guide formed by being connected to the inside of the annular wire guide so as to be guided in the vertical direction and wound around the toroidal core, and the slit-shaped wire Control means for controlling the tension direction applied to the wire wound around the toroidal core through the guide to enter into the slit-shaped wire guide inside the annular wire guide, and inside the annular wire guide. The toroidal core winding device is characterized in that a vertically movable fixing jig for temporarily fixing the wire is provided on the wire outlet side of the core.

Further, the present invention, in the slit-shaped wire guide, when the wire rod is sent along the annular wire guide by the plurality of pairs of rollers to form a wire ring, the tip of the wire material is placed outside the annular wire guide. It is characterized in that a means is provided for flowing air from the center of the slit-shaped line guide through the slit-shaped line guide toward the outside from the inside of the annular line guide so as to press and enter the pair of rollers.

Further, the present invention, in the annular wire guide, on the wire rod insertion side of the toroidal core window of the annular wire guide,
The slit-shaped line guide is closed to guide the tip of the wire fed by the pair of rollers provided on the wire-insertion side into the slit-shaped wire guide so as not to enter the slit-shaped wire guide. Movable guide means configured to open the slit-shaped line guide when wound around the toroidal core is provided.

Further, the present invention is characterized in that, in the movable guide means, when the tip end portion of the wire rod is inserted into the core window of the toroidal core, means for flowing air from the insertion side toward the core window is provided. To do.

Further, the present invention provides a toroidal core winding method for winding a wire on a toroidal core, wherein the toroidal core is positioned so that a core window of the toroidal core is located at a part of an annular wire guide for guiding the wire. A shaped core is installed, and the supplied wire material is fed along the annular wire guide by a plurality of pairs of rollers provided at a plurality of places in pairs so as to sandwich the annular wire guide. While forming a wire loop, the retracting mechanism retracts each inner roller and winds it around the toroidal core through a slit-shaped wire guide that is connected to the inside of the annular wire guide and regulates in the vertical direction. The tip of the wire rod into the core window of the toroidal core, and the inserted wire rod is sandwiched by the annular wire guide to form a pair on the outside and the inside. A wire rod wound around the toroidal core while retracting each of the inner rollers by a retracting mechanism while forming a coil by feeding along the annular wire guide by a plurality of pairs of rollers provided at a plurality of locations. The tension direction to be applied to is controlled by the tension direction control means so as to enter the slit-shaped line guide inside the linear line guide, and inside the annular line guide, the core line outlet side The method of winding a toroidal core is characterized in that it is temporarily fixed by a vertically movable fixing jig.

[Work]

By applying tension to the wire by the feed roller, wire feeding and tension application can be continuously performed, and the wire is sandwiched by pads and the tension application direction is controlled by pins, whereby the winding operation can be speeded up.

In addition, in the movable guide, on the wire insertion side of the core window, when the tip of the wire sent by the roller is sent toward the core window, the conventional fixed guide guides three surfaces around the wire. In addition to the above, the remaining one side is guided to form a complete guide of the four sides. Also, when winding around the core,
Since the wire has to be pulled out from the guide portion, the movable guide operates so that one surface that was closed at the time of inserting the tip of the wire is opened and the wire can be pulled out. As a result, the wire insertion operation into the core window is ensured and winding is possible, so that the reliability of the winding operation can be improved.

Further, since the air sent from the slit side in the line guide direction by the nozzle can confine the wire tip portion that tries to enter from the line guide to the slit side in the line guide, the reliability of the winding operation can be improved.

〔Example〕

FIG. 31 is an external perspective view showing an example of a core used in a VTR or the like. The core 2 is a ferrite plate-shaped member having a thickness of about 0.4 mm, and is molded to a size of about 2 to 3 mm in length and width. 0.3mm × 0.3 near the tape sliding surface 2A of this core 2
A winding window 3 (hereinafter referred to as a core window) having a size of about mm is formed, and a core wire direct system is provided on the winding portion 4 on both sides of the core window 3.
An electric wire 1 (hereinafter referred to as a wire) of about 0.03 mm is wound. Although the number of turns of this wire varies depending on the product, it is usually about 5 to 15 turns on the left and right sides. The toroidal core 2 is attached to the tip of the core base 2B, and the base 2B is further attached to an upper cylinder (not shown).

FIG. 32 is an external perspective view showing an example of a core used for a magnetic disk or the like. The core 2'has a head portion 2C formed to have a thickness of about 0.4 mm and a length of 1 to 2 mm, and a thickness of 2 m.
It is composed of a slider portion 2D having a length of 3 m and a length of 3 to 5 mm, and is made of ferrite. Head part 2C of this core 2 '
Has a window 3 (hereinafter referred to as a core window) for winding of about 0.5 × 0.5 mm, and the slider portion 2D of this core 3 is formed.
An electric wire 1 (hereinafter referred to as a wire) having a core wire diameter of about 0.05 mm is wound around the winding portion 4 on the opposite side. The number of turns of this wire 1 is
It depends on the product, but it is usually about 10 to 30 rolls.

An embodiment (hereinafter referred to as a first embodiment) of a winding method and a winding device according to the present invention will be described below with reference to FIGS. 1 to 7.
This will be described with reference to FIGS. 33 and 39.

FIG. 1 is an external perspective view showing the overall configuration of the winding device of this embodiment. As shown in FIG. 1, this device has a core 2
A core supply / discharge unit 6 supporting a base 10 so as to be movable in XYZ directions, and a winding unit 7 for winding a wire 1 around a core 2.
And a wire supplying portion 9 for supplying the wire 1 to the winding portion 7 and a terminal wire drawing portion 5 for drawing the terminal wire 1D from the core holding position in the −Z direction in the drawing.

A circular groove 11A is provided on the base 10 of the winding portion 7, and this groove 11A
A circular line guide 11 is constituted by the cover 12 that covers the groove 11A. A notch 13 is provided in a part of the wire guide 11, and the notch 13
The wire drawing rod 90 so that the cut ends are located on both sides of the wire through hole 90A (or the core window 3 of the core 2) of the wire drawing rod 90.
(Or core 2) is arranged. The roller pair 21 is provided on the wire insertion side of the wire guide hole 90A (or the core window 3) of the wire guide 11.
21 ', the roller pair 22,22' on the line feeding side, and the roller pair 22,21 'from the roller pair 22,22' of the line guide 11.
Roller 23.23 ', 24.24' in two places on the way to
Are provided so that their rotation axes are perpendicular to the plane formed by the line guides 11, and that the contact portions of the rollers of each roller pair are located in the line guides 11. Further, a detector 8 for detecting passage of the wire 1 is provided on a straight line connecting the core 2 and the roller 23 ', and further, the roller pair 24, 24' and the roller pair 21.
A detector 8A for detecting passage of the wire 1 is provided on the lower surface of the groove 11A between the portions 21 '.

An arcuate groove 81A having a common tangent to the roller pair 21 and 21 'as a tangent is provided on the base 10 of the wire supply unit 9. The groove 81A and the groove 81A
The cover 12 covering A constitutes an arc-shaped line guide 81. The line guide 81 is provided with a cutter 82 at a position separated from the core 2 by a predetermined length, and a roller pair 83 is provided at a position further separated from the core 2.
83 ′ is provided, and a bobbin 84 rotatably supported with respect to the base 10 is provided further away from the core 2. The roller pairs 83 and 83 'and the roller pairs 21 to 24' are controlled to rotate at the same peripheral speed.

The core supply / discharge unit 6 includes a turntable 85 rotatably supported with respect to the base 10, a turntable rotating means (not shown), and two core holding units 6A provided on the turntable 85. And 6B. Furthermore, this core holding unit 6A (6B) is a turntable
Slider 86A (86B) supported so as to be movable in the Y direction of 85
A driving means (not shown) for the slider 86A (86B), a core clamper 87A (87B) for holding the core 2 and a gripper 88A for holding the terminal wire 1D, which are provided on the slider 86A (86B).
(88B) and gripper 88A (88B) opening / closing means (not shown)
Composed of and.

FIG. 2 shows a sectional view taken along the line EE ′ of FIG. The terminal wire drawing portion 5 has a tip 90B similar to the core 2 and a wire drawing rod 90 having a hole 90A at a position corresponding to the core window 3, and bearings 91 and 91 fixed to the wire drawing rod 90. ', Guide rails 92, 92' engaged with these bearings 91, 91 'and fixed to the base 10, and a rack 93 fixed to the wire drawing rod 90.
And a gear 94 fixed to a shaft 95A of a motor 95 fixed to the base 10 and engaged with the rack 93. By rotating this motor 95, the core 2 when the slider 86A moves forward from the core holding position shown by the solid line in the figure to the tip 90B of the wire drawing rod 90 as shown by the chain line in the figure.
It can be moved to a position where it does not interfere with the gripper 88A.

FIG. 3 shows an AA cross section of FIG. The plane 14 formed inside the circular groove 11A provided in the base 10 is made lower than the plane 15 formed outside by a length ω slightly larger than the diameter of the wire 1. Further, a cover 12 is provided so as to cover the groove 11A and the flat surface 14 from above. A portion formed by the groove 11A and the cover 12 is called a line guide 11, and a portion formed by a gap between the flat surface 14 and the cover 12 is called a slit 16.

A rotating shaft 30 of the roller 23 is rotatably supported by the base 10 by a bearing, and is connected to a motor 32 provided on the base 10 by a coupling 33. Also, the roller 23 '
Is rotatably supported by a bearing 36 on a shaft 35 fixed to the swing arm 34. The swing arm 34 is swingably supported by the base 10 by a pin 37, and is connected to a pneumatic cylinder 39 by a pin 38 provided on the swing arm 34. By moving the pneumatic cylinder 39 forward and backward, the pin 37 can be moved from the state in which the roller 23 'is pressed against the roller 23 to the position deviated from the plane 14 as shown by the chain line in the figure. . The other three pairs of rollers have the same structure.

Now, the winding method of this embodiment will be described with reference to FIGS. 4 to 7 and FIGS. 33 to 38. Further, FIG. 39 shows the time chart.

FIG. 4 shows a state in which the winding is completed. The core 2A that has completed the winding is held by the core holding unit 6A and is in the winding portion 7. In addition, the tip 1E of the wire 1 wound around the core 2A
Are sandwiched between the roller pairs 23, 23 '. On the other hand, the core 2B is held by the core holding unit 6B and is in the core supply / discharge section. The tip 1A of the wire 1 is inside the wire guide 81 in a state of being sandwiched by the roller pair 83, 83 '. The cutter 82 is open, and the rollers 21 ', 22', 23 ', 24' are the pair of rollers 21, 22, 2
It is pressed against 3,24. Also, the wire drawing rod 90
Is in a lowered state.

As shown in FIG. 5, from the state shown in FIG.
When A is retracted, the tip 1E of the wire 1 wound around the core 2A is pulled out together with the core 2A, and is separated from the rollers 23 and 23 ',
It goes into the slit 16. At the same time, when the tip portion 90B of the wire drawing rod 90 is raised to the core holding position, the tip portion 1E of the wire 1 at the core holding position is pushed up by the wire drawing rod 90 to a position off the line transfer path. To be When the rollers 83, 21, 22, 23, 24 are rotated in this state, the tip portion 1A of the wire 1 is
Is fed to a position just before the core holding position by a pair of rollers 21 and 21 '.

As shown in FIG. 6, the tip portion 1A of the wire 1 is further fed from the state shown in FIG.
Proceed while being guided by 11, passing through the hole 90A of the wire drawing rod 90. Since the tip portion 90B of the wire drawing rod 90 has a shape similar to that of the core 2, the tip portion 1A of the wire 1 can pass through the hole 90A like a normal winding. Further, the tip portion 1A of the wire 1 is fed by rollers 21 to 24 ',
Proceed while being guided by 11, and reach the detector 8A. Detector
When 8A detects the passage of the line 1, the rollers 21, 22, 23, 24, 83 are stopped from rotating, the line 1 is cut by the cutter 82, and the roller 21 is retracted. Also, the turntable 85 is inverted during this time.

Further, as shown in FIG. 7, when the wire drawing rod 90 is lowered from the state shown in FIG. 6, the hole 90A of the wire drawing rod 90 is
The terminal line 1D inserted in the is pulled out downward.

As shown in FIG. 33, from the state shown in FIG.
B is moved forward to hold the core 2B in the winding portion 7, and
The terminal line 1D is gripped by the gripper 88B. FIG. 34 shows a plan view of this state. The terminal 1D is drawn below the core 2B on the line feeding side. In addition, the wire tip portion 1A is a roller pair.
It is between 21 and 21 'and roller pair 24 and 24'.

This is the end of the wire supply, terminal wire drawing, fixing, and core supply / discharge processes. Continue to the winding process.

As shown in FIG. 35, the roller 22 ′ is retracted from the state of FIG. 34, and the roller 21 ′ is returned from the retracted state and pressed against the roller 21. (State of point B in FIG. 39) Since the intermediate portion 1B of the line 1 is fed by the rollers 23, 23 ',
Enter from the wire guide 11 to the slit 16 side. Further Laura
By rotating 23.23 ', tension is applied to the intermediate portion 1B of the wire 1 and the wire 1C already wound on the core 2. In this state, the roller 22 'is returned from the retracted state and pressed against the roller 22. On the other hand, the tip portion 1A of the wire 1 is fed by the rollers 24 and 24 ', and is advanced while being guided by the wire guide 11 to the rollers 21 and 24.
Reach 21 '. At this point, the roller 24 'is retracted.
(State of point C in FIG. 39) Furthermore, the tip end portion 1A of the wire 1 is fed by the rollers 21 and 21 'and advances while being guided by the wire guide 11 to reach the wire insertion side of the core window 3. At this time,
Since the intermediate portion 1Ba of the wire 1 is fed by the rollers 21 and 21 ', it enters from the wire guide 11 to the slit 16 side.

Below, the rollers 21 ', 22', 23 ', 24' shown by the one-dot chain line
Indicates that it has been retracted to a position deviated from the plane 14 shown in FIG.

Further, as shown in FIG.
The tip 1A of the wire 1 sent by 21 ・ 21 'and protruding into the notch 13
The roller 23 on the wire 1C already wound on the winding part 4 of the core 2.
・ Because tension is applied from 23 ', it does not interfere with this line 1C, and the intermediate portion 1B of the line 1 has rollers 23.2
Since it is pulled to the opposite side of the core window 3 from the winding portion 4 of the core 2 by 3 ', it can pass through the core window 3 without interfering with the wire 1B.

The tip portion 1A of the wire 1 that has passed through the core window 3 has rollers 21 and 21 '.
Is further fed by and is advanced while being guided by the line guide 11 to reach the rollers 22 and 22 '.

As shown in FIG. 37, from the state shown in FIG. 36, the detector 8 detects the passage of the line 1, and after a certain period of time, the roller 23 'is retracted. Also, the roller 24 'is returned from the retracted state and pressed against the roller 24. (The state at point E in FIG. 39) The intermediate portion 1B of the line 1 is fed by the rollers 21 and 21 ', and is gradually narrowed down from the large coil including the winding portion 4 of the core 2 and the roller 21', and the small line. Go in a circle. Laura 2 at this point
1'withdraw, the roller 23 'returns from the retracted state, and is pressed against the roller 23. (Fig. 39, point F) Meanwhile,
The tip end portion 1A of the wire 1 is fed by the rollers 22 and 22 ', advances while being guided by the wire guide 11, and reaches the rollers 23 and 23'.

As shown in FIG. 38, from the state of FIG. 37, the tip 1A of the line 1
Are sent by rollers 23, 23 'and proceed while being guided by line guide 11 to reach rollers 24, 24', while line 1
The wire loop formed by the intermediate portion 1B of 1 is narrowed toward the winding portion 4 of the core 2.

As shown in FIG. 35, the roller 22 'is retracted from the state of FIG. 38, and the roller 21' is returned from the retracted state and pressed against the roller 21. (State of point B in FIG. 39) Since the intermediate portion 1B of the line 1 is fed by the rollers 23, 23 ',
Enter from the wire guide 11 to the slit 16 side. Further, by rotating the rollers 23, 23 ', tension is applied to the intermediate portion 1B of the wire 1 and the wire 1C already wound on the core 2. In this state, the roller 22 'is returned from the retracted state and pressed against the roller 22. On the other hand, the tip portion 1A of the wire 1 is fed by the rollers 24 and 24 ', and is advanced while being guided by the wire guide 11 to the rollers 21 and 24.
Reach 21 '. At this point, the roller 24 'is retracted.
(State of point C in FIG. 39) Furthermore, the tip end portion 1A of the wire 1 is fed by the rollers 21 and 21 'and advances while being guided by the wire guide 11 to reach the wire insertion side of the core window 3. At this time,
Since the intermediate portion 1Ba of the wire 1 is fed by the rollers 21 and 21 ', it enters from the wire guide 11 to the slit 16 side.

This completes the winding of one turn. Thereafter, the same operation is repeated a predetermined number of times to perform winding.

As described above, according to the present invention, when the tip end of the wire is inserted into the core window only by the rotation and opening / closing operation of the roller, tension is applied to the already wound wire, and this wire at the middle portion of the wire is applied. Since the transfer can be continuously performed in a direction that does not interfere with the tip portion, the winding operation can be speeded up.

Next, another embodiment (hereinafter referred to as a second embodiment) of the winding device according to the present invention will be described with reference to FIGS. 8 to 20. This embodiment is based on the first embodiment and is intended to improve winding alignment and withstand voltage.

FIG. 8 is an external perspective view showing the overall structure of the winding device of this embodiment. As shown in FIG. 8, this device is provided on the line outlet side of the core 2 inside the line guide 11 of the device shown in FIG.
A pad 40 is provided so as to be vertically movable, and a pin 50 that is vertically and swingably supported is provided on the opposite side of the core 2.

FIG. 9 shows a sectional view taken along the line BB ′ of FIG. Pad 40
Is slidably supported by a shaft 41A of a solenoid 41 mounted on the base 10, and is pressed against the cover 12 by a spring 43 concentrically provided with the shaft 41A. Axis 41
A pin 42 is press-fitted to the tip of A in a direction orthogonal to the shaft 41A, and the pad 41 is pressed against the cover 12 by driving the solenoid 41 and pulling the shaft 41A in the Z direction in the drawing. From the state, as shown by the dashed line in the figure, slit
It can be opened by a distance equivalent to 16.

FIG. 10 is a perspective view showing a driving portion of the pin 50 shown in FIG.

The pin 50 is press-fitted into an arm 54 that is rotatably supported by a shaft 59A of a solenoid 59, and one end of a spring 56 that is concentrically provided with the protrusion 54A of the arm 54 is engaged. The other end of this spring 56 has a plate 57 fixed to the shaft 59A of the solenoid 59.
It is engaged with a pin 57A that is press-fitted in. In addition, pin 5
The spring 0, which is concentric with the shaft 59A of the solenoid 59, pushes the collar 58 press-fitted into the shaft 59A up to the position where it hits the solenoid 59, and is in a position where it crosses the slit 16 in this state. By driving the solenoid 59 and pulling the shaft 59A in the Z direction in the drawing, the position where the pin 50 crosses the slit 16 between the base 10 and the cover 12 and is displaced from the slit 16 as shown by the chain line in the drawing. Can be moved up to.

Now, the winding method of the present embodiment will be described with reference to FIGS. 11 to 19. The time chart is shown in FIG.

FIG. 11 shows a winding part in the middle of winding. here,
Consider a case where the winding 2 has already been wound for 2 turns and the wire 1 for the third turn is wound around the core 2. The tip portion 1A of the wire 1 is sandwiched between the rollers 23, 23 '. On the other hand, the intermediate portion 1B of the wire 1 is inside the slit 16 and forms a coil including the winding portion 4 of the core 2 inside. The roller 21 'is in the retracted state. Also,
The pad 40 is in the lowered state and the pin 50 is in the raised state. (State of point G in FIG. 20) Hereinafter, the rollers 21 ', 22', 23 ', 24', the pads 40, and the pins 50 shown by the alternate long and short dash line are retracted to a position deviated from the plane 14 shown in FIG. Alternatively, it indicates that it is in a lowered state.

FIG. 12 is an enlarged view of the core portion in the state of FIG. As shown in FIG. 12, the lower end of the cover 12 is at the line 1 position. The core 2 is positioned so as to coincide with the lower end of the core 2. In this state, the wire 1 passed through the core window 3 has the core 2 and the wire guide 11
Wire 1 already wound on core 2 located in the space surrounded by (eg, the position shown in the figure) Never get on. At this time, the pad 40 is positioned such that the upper end thereof is flush with the plane 14 of the base 10.

Further, as shown in FIG. 13, in the state of FIG. 11, the intermediate portion 1B of the line 1 is at the position indicated by the broken line in the figure, and the corner 4B (of the winding portion 4 of the core 2 ( That is, the position of line 1 shown in FIG. There is a curl, and there is no looseness of the wire 1 at this position.

As shown in FIG. 14, from the state shown in FIG. 11, the tip portion 1A of the wire 1 is fed by the rollers 23, 23 'and advances while being guided by the wire guide 11 to reach the rollers 24, 24'. On the other hand, since the intermediate portion 1B of the wire 1 is fed by the rollers 22 and 22 ', it is wound around the winding portion 4 of the core 2. At this time, the pad 40 is raised and pressed against the cover 12. In addition, Laura
The intermediate portion 1B of the wire 1 sent by the 22/22 'is the wire guide 11
Goes into the slit 16 side from and enters between the pad 40 and the cover 12. Further, by rotating the rollers 22 and 22 ', tension f can be applied to the intermediate portion 1B of the wire 1 in the direction connecting the core 2 and the roller 22'.

At this time, as shown in FIG. 15, since the intermediate portion 1B of the line 1 is inserted between the pad 40 and the cover 12, the pad 40 is moved to the Z
Receive drag F in the direction. For this reason, the rollers shown in FIG.
The tension f applied to the wire 1 by 22 · 22 ′ is applied in the direction along the cover 12, and the wire 1 is wound around the winding portion 4 of the core 2 along the cover 12. That is, the line 1 at the position in the figure Is wound at the position.

Next, as shown in FIG. 16, from the state of FIG.
Evacuate 2 '. At this time, since the intermediate portion 1B of the wire 1 is sandwiched between the pad 40 and the cover 12, the core 2 has already been cut.
The wire 1C wound around and the wire 1B between the core 2 and the pad 40 are not loosened. Further, the roller 21 'is returned from the retracted state and pressed against the roller 21. (State at point H in FIG. 20) The tip portion 1A of the wire 1 is fed by the rollers 24 and 24 ', advances while being guided by the wire guide 11, and reaches the rollers 21 and 21'. On the other hand, since the intermediate portion 1B of the wire 1 is fed by the rollers 23 and 23 ', it is pulled in the direction connecting the core 2 and the roller 23'. In this state, the roller 22 'is returned from the retracted state and pressed against the roller 22. (State at point I in FIG. 20) At this time, as shown in FIG. 17, when the core 2 is raised by a length equal to the diameter of the wire, the position of the wire 1 is increased. From pad to pad 40 It is wound around the winding portion 4 of the core 2 in a state where it is in close contact with the portion extending to. At this time, the core 2 is lined with the lower end of the cover 12. Are positioned so that the lower ends of the are aligned.

Next, as shown in FIG. 18, the detector 8 detects the passage of the intermediate portion 1Ba of the line 1 from the state of FIG. 16, and after a certain period of time, the roller 23 'is retracted. At this time, the middle part of line 1
Since 1B is sandwiched between the pad 40 and the cover 12, the wire 1C already wound on the core and the wire 1B between the core 2 and the pad 40 are not loosened.

The tip portion 1A of the wire 1 is fed by the rollers 21 and 21 'and advances while being guided by the wire guide 11 to reach the wire insertion side of the core window 3. (State of point J in Fig. 20) Furthermore, roller 21
The tip portion 1A of the wire 1 sent by 21 'and extending into the notch 13 is
Since the wire 1C already wound on the winding portion 4 of the core 2 has no looseness, it can pass through the core window 3 without interfering with the wire 1C.

Next, as shown in FIG. 19, from the state shown in FIG. 18, the tip end portion 1A of the wire 1 that has passed through the core window 3 is further fed by the rollers 21 and 21 ′, and is guided by the wire guide 11 to live. ,
Reach rollers 22 and 22 '.

On the other hand, the intermediate portion 1B of the line 1 is fed by the rollers 24 and 24 'and hits the pin 50 to be in the state shown by the broken line in FIG. Further, by rotating the rollers 24, 24 ', the intermediate portion 1B of the wire 1 resists the pressing force of the spring 56 shown in FIG.
The core 2 by the reaction force when moving the
Tension is applied in the direction that connects the pin 50 with the pin.

Further, as shown in FIG. 11, the roller is changed from the state of FIG.
24 is retracted, and the pad 40 and the pin 50 are lowered. Further, the roller 23 'is returned from the retracted state and pressed against the roller 23. (State of Point K in FIG. 20) The tip portion 1A of the wire 1 is fed by the rollers 22 and 22 ', advances while being guided by the wire guide 11, and reaches the rollers 23 and 23'. On the other hand, the intermediate portion 1B of the wire 1 is fed by the rollers 21 and 21 ', and is gradually narrowed down from a large wire ring including the winding portion 4 of the core 2 and the roller 21' to become a small wire ring. At this time, the roller 21 'is retracted, the roller 24' is returned from the retracted state, and is pressed against the roller 24, and the pin 50 is raised.

This completes the winding of one turn. Thereafter, the same operation is repeated a predetermined number of times to perform winding.

FIG. 13 shows how the wire 1 is wound around the winding portion 4 of the core 2.

As shown in FIG. 14, the line 1 (shown by the solid line in the figure) once drawn in the direction of A in FIG.
As shown in FIG. 16, by the rollers 23, 23 ', B in FIG.
Since a tension is applied in the direction of, the plastic is deformed at the corner 4A of the winding portion 4 of the core 2 as shown by the alternate long and short dash line in FIG.

Further, as shown in FIG. 19, the line 1 is tensioned in the direction of C in FIG. 13 by the rollers 24 and 24 'and the pin 50, so that the line 2 of the core 2 Corner of winding part 4
It is plastically deformed at 4B and is wound.

Further, as shown in FIG. 11, even if the tip portion 1A of the wire 1 is passed through the core window 3 and no tension is applied to the intermediate portion 1B of the wire 1, it is possible to wind it around the wire 1 as described above. Because it is attached,
Wire already wound on the core 2, as indicated by the dashed line in FIG.
1C never loosens.

Further, as shown in FIG. 14, by the rollers 22 and 22 ',
Even if the wire 1 is pulled out in the direction of A in FIG. 13 and tension is applied, the wire 1 is, as indicated by the solid line in the figure, the corner 4C of the winding portion 4 of the core 2
And only by rubbing with 4D only, the damage of the coating of this line 1 is small. Therefore, the withstand voltage can be increased.

As described above, according to the present invention, it is possible to regulate the passage range of the wire in the core window by the wire guide and perform the winding while applying tension in a certain direction without leaving the wire, so that the aligned winding can be performed. Lines are possible. Further, since the tension applying direction can be changed and the winding can be performed while winding the wire without loosening the wire, the withstand voltage can be increased.

In the present invention, the pad 40 and the tension pin 50 are used to move the core up and down for each winding, but they may be used alone or in combination of two.

Next, still another embodiment (hereinafter, referred to as a third embodiment) of the winding device according to the present invention will be described with reference to FIGS. 21 to 24. This embodiment is based on the first embodiment and is intended to improve the reliability of the operation of passing an ultrafine wire through a minute core window.

FIG. 21 is an external perspective view showing the overall structure of the winding device of this embodiment. As shown in FIG. 21, in this device, a movable line insertion guide 60 is provided by cutting out a part of the base 10 on the line insertion side of the core 2 of the device shown in FIG.

FIG. 22 is an enlarged view of the line insertion guide 60 shown in FIG. A groove 61 is formed in the wire insertion guide 60. One end of the groove 61 is aligned with the wire feeding side of the rollers 21 and 21 ', and the other end is aligned with the core window 3. There is. Further, the shaft 62 of the pneumatic cylinder 63 attached to the base 10 is press-fitted into the wire insertion guide 60. Wire insertion guide 60 via shaft 62 by pneumatic cylinder 63
When it is lifted, it hits the cover 12, and the groove 61 is covered by the cover 12 to form a line guide whose circumference is completely closed. Also,
Since the wire insertion guide 60 is pulled down by the pneumatic cylinder 63, the wire insertion guide 60 is separated from the cover 12 to form a gap similar to the slit 16.

Next, FIGS. 23 and 24 show the winding method of this embodiment.

FIG. 23 shows a state corresponding to FIG. 5 in which the winding advances in the same procedure as in Example (1). At this time, the wire insertion guide 60 rises and is pressed against the cover 12 to form a completely closed wire guide. From this state, the tip end 1A of the wire 1 is sent by the rotation of the rollers 21, 21 ',
It is completely guided by the wire insertion guide 60 and the cover 12 and is surely inserted into the core window 3.

FIG. 24 shows a state corresponding to FIG. 3 of the embodiment (1). At this time, lower the wire insertion guide 60 to cover it.
A gap similar to the slit 16 is formed between the slit 12 and the slit 12. From this state, by rotating the rollers 22 and 22 ', the coil formed by the intermediate portion 1B of the wire 1 is narrowed toward the winding portion 4 of the core 2. At this time, since there is a gap between the wire insertion guide 60 and the cover 12 that is approximately the same as the slit 16, it does not hinder the narrowing.

As described above, according to the present invention, when the distal end portion 1A of the wire 1 is passed through the core window 3 of the core 2 which is the only fixed obstacle, the wire insertion guide 60 causes a completely closed guide without the slit 16. Since it can be formed, the tip portion 1A of the wire 1 can be reliably passed through the core window 3, and the reliability of the winding operation can be improved.

Next, still another embodiment (hereinafter referred to as a fourth embodiment) of the winding device according to the present invention will be described with reference to FIGS. 25 to 29. The present embodiment is based on the third embodiment, and is intended to improve the reliability of the wire passing operation to the micro core window of the extra fine wire having particularly low rigidity.

FIG. 25 is an external perspective view showing the overall structure of the winding device of this embodiment. As shown in FIG. 25, this device is different from the device shown in FIG. 21 in that a nozzle 70 for sending air from the slit 16 side toward the line guide 11 and a cover 12 above the line insertion guide 60 to the core 2 of the core 2. A nozzle 65 for sending air toward the window 3 is provided.

FIG. 26 shows a cross section taken along the line CC ′ of FIG. 25. base
A cylindrical hole 71 is provided at the center of the annular groove 11A on the top 10, and a tapered portion 72 is provided at the opening of the hole 71. Base 10
A lid provided with a taper portion 73 having the same inclination as the taper portion 72 of
A groove 75 is provided in a part of the taper portion 73 of 74, and the lid 74 is attached to the base 10 by a screw 76. The taper portion 72 of the base 10 and the groove 75 of the lid 74 form the nozzle 70.
The nozzle 70 is connected from a hole 77 to a compressed air source (not shown) by a joint 78.

FIG. 27 is an enlarged view of part D of FIG. 25. This is provided with a nozzle 65 for sending air toward the core window 3 in the cover 12 above the line insertion guide 60 of FIG. This nozzle 65
Is connected by a joint 67 to a source of compressed air (not shown).

Next, FIGS. 28 to 30 show the winding method of the present embodiment.

FIG. 28 shows a state corresponding to FIG. 23, in which the winding advances in the same procedure as in Example (3). At this time, the wire insertion guide 60 rises and is pressed against the cover 12 to form a completely closed wire guide. From this state, by rotating the rollers 21 and 21 ', the tip portion 1A of the wire 1 is fed, completely guided by the wire insertion guide 60 and the cover 12, and inserted into the core window 3. At this time, as shown in FIG. 29, the wire tip portion 1A in the wire insertion guide 60 has a turbulent nozzle.
The unsteady force is received by the airflow 65A from 65,
As it is sent while vibrating finely at high speed as shown by the one-dot chain line in the figure, even if it hits the core 2 or the already wound wire 1C, it is easy to get caught, so it surely passes through the core window 3. be able to.

As shown in FIG. 30, the tip of the wire 1 passing through the core window 3
1A is further fed by rollers 21 and 21 ', and the line guide 11
And proceed through the rollers 22 and 22 'and then the roller 23
・ Reach 23. In general, when the rigidity of the wire 1 is low, the wire 1 may bend due to the drag force from the wire tip portion 1A and the wire guide 11 or the impact when it collides with the rollers 21 to 24 ', and may enter the slit 16 side. However, according to the present invention, the nozzle 70
Since the wire tip portion 1A is sent while being pushed into the wire guide 11 by the air flow 70A from, it is reliably guided without entering the slit 16 side.

On the other hand, since the intermediate portion 1B of the wire 1 is sent by the rollers 21 and 21 ', the wire guide 1 is resisted against the air flow 70A from the nozzle 70.
It is narrowed down from 1 to the slit 16 side.

As described above, according to the present invention, even if the core window has many windings and the wire is not rigid, the tip of the wire is vibrated finely by the turbulent air flow, so that the wire can be reliably inserted. Even if the wire has no rigidity, the tip of the wire can be reliably guided by including the air flow.

It should be noted that an embodiment in which each element of the above-described first to fourth embodiments is used alone or some of them are combined is also conceivable.

〔The invention's effect〕

According to the present invention, since wire feeding and tension application can be performed continuously, the winding operation can be speeded up, and the wire can be reliably guided, so that the reliability of the winding operation can be improved.

[Brief description of drawings]

FIG. 1 is an external perspective view showing the overall construction of a first embodiment of a winding device according to the present invention, and FIG. 2 is an EE 'in FIG.
Sectional drawing showing a section, FIG. 3 is a sectional view showing an AA ′ section in FIG. 1, FIGS. 4 to 7 are explanatory views showing a wire supplying step, and FIG. 8 is a winding according to the present invention. FIG. 9 is an external perspective view showing the overall construction of the second embodiment of the apparatus, FIG. 9 is a sectional view showing a section taken along the line BB ′ in FIG. 8, FIG. 10 is a perspective view of the pin driving portion, and FIGS. FIG. 19 is an explanatory view showing a winding principle diagram of the second embodiment, FIG. 20 is a time chart showing a winding operation of the second embodiment, and FIG. 21 is a third winding device according to the present invention.
FIG. 22 is an external perspective view showing the overall structure of the embodiment of the present invention, FIG. 22 is a perspective view of the wire insertion guide portion, FIGS. 23 and 24 are explanatory views showing the winding principle of the third embodiment, and FIG. FIG. 26 is a cross-sectional view showing an overall configuration of a winding device according to a fourth embodiment of the present invention, FIG. 26 is a cross-sectional view taken along the line CC ′ in FIG. 25, and FIG. 28 is an enlarged view showing the winding principle of the fourth embodiment, FIG. 31 is an external perspective view of a VTR core which is a winding object of the present invention, and FIG. An external perspective view of a magnetic disk device core that is a winding target of the present invention,
FIG. 34 and FIG. 34 are explanatory views showing a wire supplying step, FIGS. 35 to 38 are explanatory views showing a winding principle of the first embodiment, and FIG. 39 is a winding operation of the first embodiment. It is a time chart shown. 1 ... Wire, 1A ... Wire tip, 1B ... Wire middle, 1C ... Wire wound on core, 2 ... Core, 3 ... Core window, 4 ... Core winding, 6A. 6B …… Core holding unit, 11 …… Line guide, 16 ……
Slit, 21.21 ', 22.22', 23.23 ', 24.24' …… Roller, 34 …… Rotating arm, 40 …… Pad, 50 …… Pin, 60 ……
Wire insertion guide, 65 …… nozzle, 70 …… nozzle.

Front page continuation (72) Inventor Toyohide Hamada, 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Pref., Institute of Industrial Science and Technology, Hitachi, Ltd. (72) Yuji Wada, 292, Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Hitachi, Ltd.Production Technology Research Laboratory (72) Inventor Shigeo Hara, 2880, Kokuzu, Odawara, Kanagawa Stock Company Hitachi, Ltd., Odawara, Hitachi (72) Inventor, Yosuke Fukumoto, 2880, Kunizu, Odawara, Kanagawa Hitachi, Ltd., Odawara, Ltd. (56) References JP-A-62-281316 (JP, A)

Claims (5)

[Claims] 1. A toroidal core winding device for winding a wire rod on a toroidal core, comprising: a wire rod supply means for supplying the wire rod; and an annular ring for guiding the wire rod supplied by the wire rod supply means in a feed direction. A wire guide; a core holding mechanism that holds the toroidal core so that the core window of the toroidal core is located at a part of the annular wire guide; and an outer side and an inner side that sandwich the annular wire guide. A plurality of pairs of rollers, which are provided in pairs at a plurality of positions and which feed the wire along the annular wire guide to form a wire ring, and inside each of the pair of rollers, inside the annular wire guide. The retracting mechanism for retracting each of the provided rollers, and the wire wheel that is formed by being fed by the plurality of pairs of rollers and guided by the annular wire guide, A slit-shaped line guide formed by being connected to the inner side of the annular line guide so as to be wound around the toroidal core by guiding the roller in the vertical direction, and the toroidal shape through the slit-shaped line guide. Control means for controlling the tension direction applied to the wire wound on the core so as to enter into the slit-shaped line guide inside the annular wire guide, and the core wire outlet inside the annular wire guide. A toroidal core winding device, which is provided with a vertically movable fixing jig for temporarily fixing the wire rod. 2. A toroidal core winding device for winding a wire rod on a toroidal core, comprising: a wire rod supply means for supplying the wire rod; and an annular ring for guiding the wire rod supplied by the wire rod supply means in a feed direction. A wire guide; a core holding mechanism that holds the toroidal core so that the core window of the toroidal core is located at a part of the annular wire guide; and an outer side and an inner side that sandwich the annular wire guide. A plurality of pairs of rollers, which are provided in pairs at a plurality of positions and which feed the wire along the annular wire guide to form a wire ring, and inside each of the pair of rollers, inside the annular wire guide. The retracting mechanism for retracting each of the provided rollers, and the wire wheel that is formed by being fed by the plurality of pairs of rollers and guided by the annular wire guide, A slit-shaped line guide formed by being connected to the inner side of the annular line guide so as to be wound around the toroidal core by guiding the roller in the vertical direction, and the toroidal shape through the slit-shaped line guide. Control means for controlling the tension direction applied to the wire wound on the core so as to enter into the slit-shaped line guide inside the annular wire guide, and the core wire outlet inside the annular wire guide. On the side, there is a vertically movable fixing jig for temporarily fixing the wire rod, and in the slit-shaped line guide, the wire rod is fed along the annular line guide by the plurality of pairs of rollers to feed the wire rod. When forming the loop, the tip of the wire is pressed to the outside of the annular wire guide so that it enters the pair of rollers. Guide through the windings of the toroidal core, characterized in that it comprises means for flowing the air toward the outside from the inside of the annular line guide device. 3. A toroidal core winding device for winding a wire rod on a toroidal core, comprising: a wire rod supply means for supplying the wire rod; and an annular guide for guiding the wire rod supplied by the wire rod feed means in a feed direction. A wire guide; a core holding mechanism that holds the toroidal core so that the core window of the toroidal core is located at a part of the annular wire guide; and an outer side and an inner side that sandwich the annular wire guide. A plurality of pairs of rollers, which are provided in pairs at a plurality of positions and which feed the wire along the annular wire guide to form a wire ring, and inside each of the pair of rollers, inside the annular wire guide. The retracting mechanism for retracting each of the provided rollers, and the wire wheel that is formed by being fed by the plurality of pairs of rollers and guided by the annular wire guide, A slit-shaped line guide formed by being connected to the inner side of the annular line guide so as to be wound around the toroidal core by guiding the roller in the vertical direction, and the toroidal shape through the slit-shaped line guide. Control means for controlling the tension direction applied to the wire wound on the core so as to enter into the slit-shaped line guide inside the annular wire guide, and the core wire outlet inside the annular wire guide. On the side, there is a vertically movable fixing jig for temporarily fixing the wire rod, and in the annular wire guide, at the wire rod insertion side of the toroidal core window of the annular wire guide, the wire rod insertion side. The slit-shaped wire guides are guided by the pair of rollers so as not to enter the slit-shaped wire guide. Close the line guide, winding apparatus of the toroidal shaped core, characterized in that the wire provided with a movable-type guide means arranged to open the slit-like line guide when winding the toroidal core. 4. A toroidal core winding device for winding a wire rod on a toroidal core, comprising: a wire rod supply means for supplying the wire rod; and an annular guide for guiding the wire rod supplied by the wire rod supply means in a feed direction. A wire guide; a core holding mechanism that holds the toroidal core so that the core window of the toroidal core is located at a part of the annular wire guide; and an outer side and an inner side that sandwich the annular wire guide. A plurality of pairs of rollers, which are provided in pairs at a plurality of positions and which feed the wire along the annular wire guide to form a wire ring, and inside each of the pair of rollers, inside the annular wire guide. The retracting mechanism for retracting each of the provided rollers, and the wire wheel that is formed by being fed by the plurality of pairs of rollers and guided by the annular wire guide, A slit-shaped line guide formed by being connected to the inside of the annular line guide so as to be wound around the toroidal core by guiding the roller vertically by retracting the roller, and the toroidal form through the slit-shaped line guide. Control means for controlling the tension direction applied to the wire wound on the core so as to enter into the slit-shaped line guide inside the annular wire guide, and the core wire outlet inside the annular wire guide. On the side, there is a vertically movable fixing jig for temporarily fixing the wire rod, and in the movable guide means, from the side where the tip end of the wire rod is inserted into the core window of the toroidal core. A toroidal core winding device, characterized in that means is provided for flowing air toward the core window. 5. A toroidal core winding method for winding a wire on a toroidal core, wherein the toroidal core core window is located at a part of an annular wire guide for guiding the wire. A shaped core is installed, and the supplied wire material is fed along the annular wire guide by a plurality of pairs of rollers provided at a plurality of places so as to sandwich the annular wire guide and form a pair with the outside and the inside. While forming the wire loop, the retracting mechanism retracts each inner roller and winds it around the toroidal core through the slit-shaped wire guide that is connected to the inside of the annular wire guide and regulates in the vertical direction. Insert the tip of the wire into the core window of the toroidal core, and form a pair of the inserted wire on the outside and the inside by sandwiching the annular wire guide. It is wound around the toroidal core while retracting each inner roller by a retracting mechanism while forming a coil by feeding along the annular line guide by a plurality of pairs of rollers provided at a plurality of locations. By controlling the tension direction applied to the wire rod, it is controlled so as to enter the slit-shaped wire guide inside the annular wire guide, and is vertically movable to the wire outlet side of the core inside the annular wire guide. The method of winding a toroidal core is characterized in that the wire is temporarily fixed with the fixing jig of.