JPH09205034A - Method and apparatus for hooking wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent loosening of a wire while shortening the working time by inclining a nozzle and the projecting end part of an object and then moving a holding means and hooking a wire, being supplied from the inclining nozzle, to the projecting end part of object. SOLUTION: A wire hooking unit 250 winds a wire W around the rectangular winding parts 11a, 11a of a bobbin. The wire W is hooked to the underside of a terminal of the bobbin located at the intermediate part of other winding parts 11a, 11a and fed to next winding parts 11a, 11a. Consequently, the wire hooking unit 250 can routes the wire W easily in a short time by inclining the nozzle N. Since the wire W is led along the end face of the bobbin B, it can be protected against cutting due to loosening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to forming a coil by winding a wire rod around a target object while moving the nozzle while feeding the wire rod through the nozzle to form a coil in the middle of the wire rod. The present invention relates to a wire rod hanging device and a wire rod hanging method for hanging on an end portion.

[0002]

2. Description of the Related Art FIG. 20 shows an example of an optical pickup used in an optical disc device such as a commonly used compact disc reproducing device. The optical pickup OP has an objective lens 900 in the movable portion 301. The objective lens 900 guides laser light to a signal recording surface of an optical disc D such as a compact disc and guides return light from the optical disc D to a predetermined light receiving portion. This objective lens 900 moves the objective lens 900 along the focus direction FCS so that the guided laser beam is focused on the recording track of the optical disc D, and the laser beam is placed on the recording track. Need to move to TRK. The optical pickup OP includes a bobbin B, and the bobbin B is provided with a focus driving coil 920 and two tracking driving coils 11 and 11.

FIG. 17 shows a bobbin B which is normally used. This bobbin B has two tracking coils 1
1 and 11 are wound, and a protrusion 930 is provided between them. The protrusion 930 is arranged between the two sets of winding portions 11a and 11a around which the tracking coils 11 and 11 are wound. The nozzle N stands vertically with respect to the bobbin B, and after this nozzle N winds the coil 11 having a rectangular shape in plan view on one of the winding portions 11a, 11a, it passes through the protrusion 930 to the next winding portion. A rectangular coil 11 is wound around 11a and 11a. When winding such coils 11 and 11, the nozzle N is the bobbin B.
With respect to the vertical direction, a predetermined operation is performed in the X, Y, and Z directions to wind.

However, when the bobbin B having the protrusion 930 of FIG. 17 is used, when the bobbin B is incorporated into the optical pickup of FIG. 20, a member on the optical pickup side is incorporated between the coils 11 and 11. And the projection 9
30 may come into contact with the member on the side of the optical pickup, and the wire W hung on the projection 930 may be cut.

Therefore, a bobbin B as shown in FIGS. 18 and 19 has been developed. The bobbin B is a frame body having a substantially rectangular cross section, and has a projecting end 12 formed on the side surface. First, as shown in FIG. 18, after the coil 920 for focus driving is wound around the peripheral surface of the coil bobbin B a predetermined number of times, as shown in FIG. 19, two sets of winding portions 11a and 11a are provided for the bobbin B. 2 coils for 1
1 and 11 are wound. In that case, after one coil 11 is wound, the wire W passes under the end 12 and
It is necessary to form one coil 11. In this case,
As in the conventional case, the nozzle N is vertically applied to the bobbin B, and is hung while moving to the arrows X, Y, and Z. That is, the nozzle N descends in the Z direction with respect to the bobbin B, retracts from the bobbin B in the Y1 direction, moves parallel to the side surface of the bobbin B (in the X1 direction), approaches the bobbin B again (Y2 direction), and rises. By doing (Z2 direction), the nozzle N can hang the wire W on the end portion 12.

[0006]

As described above, since the nozzle N for supplying the conventional wire W and winding the wire W is oriented only in the direction perpendicular to the bobbin B (Z direction in FIG. 19), Since the wire W has to be hung on the end 12 while the nozzle N moves complicatedly in the X, Y, and Z directions, the working time becomes long, and the wire W is attached to the end surface B1 of the bobbin B1.
Since it follows the above condition, the wire is likely to loosen. Wire W
When the nozzle N forms the next coil 11, the wire may be cut. Therefore, the present invention has been made to solve the above problems,
When a wire is wound around a target object by forming a coil by supplying the wire material through the nozzle and forming a coil, the wire rod can be easily hung on the protruding end of the target object. It is an object to provide a device and a method of hanging.

[0007]

According to the present invention, the above object is to supply a wire through a nozzle and move the nozzle to wind the wire around an object to form a coil.
In a wire rod hanging device for hanging the middle of a wire rod on a protruding end of an object, a holding means for holding a nozzle, a nozzle held by the holding means, and a position of the protruding end of the object This is achieved by a wire rod hooking device that includes an inclining device that tilts the wire rod, and a moving device that moves the holding device to hook the wire rod supplied from the tilted nozzle on the projecting end of the object.

According to the present invention, when the nozzle is supplying the wire rod and moving the nozzle to wind the wire rod around the object to form a coil, the wire rod hooking device forms a protrusion on the object in the middle of the wire rod. It is designed to hang on the end. The holding member of this wire rod hanging device holds the nozzle, and the tilting means,
The nozzle of this holding member is inclined with respect to the projecting end of the object. Then, the wire rod supplied from the nozzle whose moving means is inclined is hung on the projecting end of the object. Compared to the vertically held nozzle, the inclined nozzle can easily hang the wire rod on the protruding end of the object and is less likely to loosen.

[0009]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the embodiments described below are preferred specific examples of the present invention,
Although various technically preferable limitations are given, the scope of the present invention is not limited to these modes unless otherwise specified to limit the present invention. FIG. 1 shows a winding device (wire rod winding device) 200 including the wire rod hanging device of the present invention. In FIG.
The winding device 200 includes a transfer unit 20, a spindle unit 30, a nozzle unit 40, a holding unit 60, a wire rod hanging device 250, a base 400, and the like. This base 400 mounts each of the above-mentioned elements except a part of the wire rod supply means 300. FIG. 11 is a side view of the winding device 200. The transport unit 50 is located near the base 400.
0 is arranged, and the conveyor 50 of this transport unit 500
1 can transport the pallet PA for transporting the bobbin B to the transfer position TP of the transfer unit 20.

In FIGS. 1 and 11, a transfer unit 20, a spindle unit 30, a nozzle unit 40, and a holding unit 60 are arranged in this order on a base 400. At a position below the nozzle unit 40, a wire rod hanging device 250 and the like are arranged. First, the wire rod supply means 300 will be described. The bobbin 1 of the wire rod supply means 300 is a supply source for supplying the wire rod W to the nozzle N side, and the wire rod W is connected to the nozzle unit 4 via the tensioner 2 and the guide rollers 3a, 3.
It can be supplied to the nozzle N of 0.

Next, the transfer unit 20 will be described. As shown in FIGS. 11 and 4, the transfer unit 20 can be horizontally indexed by the rotation drive unit 24 in the direction of the arrow U every 180 degrees. The transfer unit 20 is provided with two upper and lower slide portions 22, 22 with respect to the substrate 20a. The one slide portion 22 can be moved and positioned in the arrow Y direction by an actuator 23. In addition, the other slide portion 22 is the other actuator 23.
Can move in the Y direction. The slide portions 22 each include a chuck 21. The chuck 21 can be closed in the directions of the arrows X0 and X0 by a driving means (not shown) to sandwich and hold the bobbin B held on the pallet PA.

The actuator 23 and the chuck 21
The rotation drive unit 24 is controlled by the control unit 100. When the lower actuator 23 is actuated when the chuck 21 of FIG. 4 is opened, the lower slide portion 2 is moved.
2 advances to the bobbin B side, and the chuck 21 sandwiches the bobbin B.

When the slide portion 22 retreats to the substrate 20a side by the actuator 23 again, the bobbin B is removed from the pallet PA. When the rotation driving unit 24 operates and the transfer unit 20 is turned over 180 degrees, the bobbin B held by the chuck 21 moves to the spindle unit 3 described next.
It is horizontally positioned at a position facing the 0 rotation spindle 33. That is, the bobbin B is moved from the transfer position TP to the winding jig transfer position JTP. Then, the actuator 23, which is on the upper side, operates and the slide portion 22 advances toward the rotary spindle 33 side, so that the bobbin B held by the chuck 21 fits the rotary spindle 33 into the winding jig 31. The winding jig 31 holds the inner surface of the bobbin B, and the bobbin B is held by the winding jig 31 by opening the chuck 21 and retracting the slide portion 22. On the contrary, the bobbin B after the winding can be returned from the winding jig transfer position JTP to the transfer position TP and discharged.

Next, the spindle unit 30 will be described. The spindle unit 30 shown in FIG. 1 has a structure as shown in FIGS. 11 and 4. Spindle unit 30
Has already been transferred by the transfer unit 20 to the transfer position TP of FIG.
The bobbin B moved from the winding jig transfer position JTP to the winding jig transfer position JTP is held by the winding jig 31 of the rotary spindle 33 and further moved to the wire rod winding position WP. That is, in FIG.
The bobbin B located at the winding jig transfer position JTP has its binding terminal 13 facing upward, but the bobbin B moved to the wire winding position WP has its winding portion 11a facing upward. Positioned. In this way, the spindle unit 30
Is for changing the positions of the winding portion 11a of the bobbin B and the binding terminal 13.

The spindle unit 30 includes a rotary drive unit 3
4, a body frame 32, rotary spindles 33, 33, and winding jigs 31, 31. The body frame 32 is provided with a rotary spindle 33 on its opposite surface, and the rotary spindles 33, 33 are provided with a winding jig 31, respectively. The rotation drive unit 34 can index the body frame 32 every 180 degrees. The rotary drive unit 34 and the rotary spindle 33,
33 is controlled by the control unit 100. The rotary spindles 33, 33 are the index drive parts 35 of FIG. 1 and FIG.
Can be indexed by. As a result, bobbin B
The positions of the winding portion 11a and the binding terminal 13 can be changed with respect to the nozzle N.

Next, the nozzle unit 40 will be described with reference to FIGS. The nozzle unit 40 includes a plurality of nozzles N as needed. This nozzle unit 40
Is provided on the triaxial unit 70 of the wire rod hanging device 250, as shown in FIG. The nozzle unit 40 includes the winding coil 11a of the bobbin N (see FIG. 1).
0 (see 0). As shown in FIG. 2, the nozzle unit 40 includes a groove cam 50, an X stage 41, and a Y stage 4.
2 and the fixing member 74. This fixing member 7
4 is horizontally fixed on the Z-axis stage 73 of the triaxial unit 70 of FIG. X of this nozzle unit 40
The stage 41, the Y stage 42, and the groove cam 50 perform two opposite direction rectangular moving winding operations on the nozzle N to wind the tracking coil 11 around the winding portion 11a of the bobbin N, as shown in FIG.

The grooved cam 50 can be continuously rotated in the clockwise CW direction and the counterclockwise CCW direction by the drive motor 51. This groove cam 50 is used for the upper groove 5 as described later.
0a and the lower groove 50b. The upper groove 50a meshes with the cam follower 52 of the Y stage 42, and the lower groove 50b of the groove cam 50 meshes with the cam follower 53 attached to the uniaxial stage 48 for the X stage 41. The uniaxial stage 48 includes another cam follower 54 on the opposite side of the cam follower 53. The cam follower 54 is guided by sliding in the Y direction on the inner surface of a guide 49 provided on the X stage 41. The guide 49 faces the Y direction.

The X stage 41 has a nozzle holding member 45, and the nozzle holding member 45 holds a plurality of nozzles N in the vertical direction (Z direction). The nozzle holding member 45 is provided with an actuator 45a for the X stage 41.
By this, a predetermined angle index is possible in the direction of the arrow RX, and the nozzle N changes from the state of FIG. 5 to the state of FIG.
It can be inclined with respect to L by an inclination angle θ, for example, 45 degrees. The X stage 41 is a guide rail 46 for the X stage.
Can be slid in the X direction with respect to the Y stage 42.

The Y stage 42 is movable in the arrow Y direction with respect to the fixed member 74 via the Y stage guide rail 47. An X-stage elastic body 43 is provided between the X stage 41 and the Y stage 42, and a Y stage elastic body 44 is provided between the Y stage 42 and the fixing member 74.
Is provided. The nozzle holding members 45a, 45 of FIG.
b is the inclination angle θ due to the operation of the actuators 45a and 45c.
It is designed to incline.

By rotating the groove cam 50 in the clockwise direction CW by the drive motor 51, the uniaxial stage 48 is rotated.
The cam follower 54 (53) of the lower groove 5 of the groove cam 50
It is adapted to move in the X direction according to 0b. However, since the X stage 41 is provided on the Y stage 42 via the guide rail 46, when the Y stage 42 moves in the Y direction, a driving force for moving the X stage 41 in the Y direction is also applied. However, at this time, since the cam follower 54 provided on the uniaxial stage 48 slides in the Y direction on the inner surface of the guide 49 of the X stage 41, the Y direction driving force that tries to be applied to the X stage 41 is canceled. Thus, the X stage 41 operates in the X direction. Also, the cam follower 52 is the groove cam 50.
By moving along the upper groove 50a of the Y stage 4
2 operates in the Y direction.

The above-mentioned X stage 41 and Y stage 42
8 causes the nozzle N of the X stage 41 to wind the wire W around the two sets of winding portions 11a, 11a of the bobbin B shown in FIGS. 9 and 10. Winding of one coil 11 and the other coil 11 can be performed via a locus. Since the X stage 41 and the Y stage 42 are provided with the elastic bodies 43 and 44 as shown in FIG. 2, the cam followers 52 and 53 descend from the apexes of the upper groove 50a and the lower groove 50b of the groove cam 50, respectively. In the area, the tension of these elastic bodies 43 and 44 allows the cam followers 52 and 53 to move at high speed.

Now, the profile and timing chart of the groove cam 50 shown in FIG. 2 will be described. FIG.
2 is a view of the groove cam 50 of FIG. 2 seen from the lower surface side.
3 is a view of the groove cam 50 as viewed from above. Therefore, FIG. 12 shows the lower groove 50b of the groove cam 50, and FIG. 13 shows the upper groove 50a of the groove cam 50. FIG. 14 is a sectional view of the groove cam 50.

FIG. 15A shows a timing chart for moving the lower groove 50b in FIG. 12 in the X direction.
5B shows a timing chart for moving the upper groove 50a of FIG. 13 in the Y direction. Both the substantially ring-shaped upper groove 50a and the lower groove 50b have, for example, a groove width of
The groove width is set so as to fit the cam followers 52 and 53, respectively. For example, Rmax is set to 48.00 mm at the position farthest from the center CR of the lower groove 50b, and Rmin is set to 44.00 mm at the closest position. Therefore, the lift amount of the lower groove 50b is as shown in FIG.
It is 4 mm as shown in (A). Similarly, FIG.
The position apart from the center CR of the upper groove 50a of
0.00 mm, the closest position is Rmin 44.0
It is 0 mm. Therefore, the lift amount of the upper groove 50a is as shown in FIG.
As shown in (B), it is 6 mm.

Characteristically, the upper groove 50a and the lower groove 50
The profile of b has the portions C1, C2 and C3 for corner winding as shown in FIGS. 15 (B) and (A). As shown in FIG. 15A, when the change in lift amount with respect to the cam rotation angle in the lower groove 50b and the change in lift amount with respect to the cam rotation angle in the upper groove 50a shown in FIG. C1, C2 and C3 are provided.

This overlap C1 has a cam rotation angle of, for example, between 74 degrees and 104 degrees, and the overlap C1
2 is the cam rotation angle of 167 degrees to 197 degrees, and the overlap C3 is between 237 degrees and 267 degrees. Lower groove 5
At 0b, the lift amount changes from 0 degree to 1 degree as shown in FIG.
It rises to 04 °, the lift amount is constant from 104 ° to 167 °, and the lift amount decreases from 167 ° to 267 °, and the lift amount does not occur from 267 ° to 367 °.

On the other hand, in the upper groove 50a, the maximum lift amount occurs when the cam rotation angle is from 0 degree to 74 degrees.
The lift amount decreases between 4 degrees and 197 degrees, the lift amount is 0 between 197 degrees and 237 degrees, and the lift amount increases between 237 degrees and 360 degrees. By using the grooved cam 50 having such a profile, the nozzle N of FIG. 2 can draw a square locus TL as shown in FIG. In the overlaps C1, C2, and C3 in FIG. 15, the nozzle N produces components in the X direction and the Y direction, so that a round locus can be produced without being angular as shown in FIG. In addition, the groove cam 50 has an upper groove 50a and a lower groove 50b that can be smoothly reversed even if the rotation thereof reversely rotates from the clockwise rotation to the counterclockwise rotation or vice versa. Have

Next, the holding unit 60 shown in FIG. 1 will be described. The holding unit 60 is equipped with a chuck 61 as shown in FIG. 5, and the wire rod W is attached to the binding terminal 13 of the bobbin B.
It is a device for winding the end part of. Specifically, as shown in FIG. 5, the chuck 61 of the wire rod gripping portion 60a changes the bobbin holder 2
When the wire W is entangled with the entanglement terminal 13 of the bobbin B held by 2, the end of the wire W is pinched, and the wire is attached to the winding portion 11a as shown in FIGS. When the wire W is wound as shown in FIG. 10, it has a function of cutting the end portion of the wire material W that is being gripped into pieces and discharging the wire material W to another location.

That is, the chuck 61 holds the end of the wire W supplied from the nozzle N, and when the wire W is wound around the bobbin B as shown in FIGS. 9 and 10, the end of the wire W is started. The part is cut into pieces, and a part of the cut wire material W is held as waste material. Then, after the chuck 61 rotates to discharge the waste material, the chuck 61 rotates again and returns to the position for holding the end portion of the wire W as shown in FIG. 5, and waits until the winding is completed. There is. Next, the wire W is shown in FIG.
After the winding is completed, the wire W stretched between the nozzle N and the bobbin B is gripped, the wire of the bobbin B and the nozzle N is cut, and the wire W from the nozzle N is picked up. You can take it and wait.

Next, the wire rod hanging device 250 will be described with reference to FIGS. 5 and 1. The wire rod hanging device 250 includes a holding unit 251 for holding the nozzle N described above, a rotary drive type actuator 45a as a tilting unit, and a triaxial unit 70 as a moving unit.

The holding member 45 of the holding means 251 shown in FIG. 5 is rotatably attached to the frame body 41, and the frame body 41 and the holding member 45 constitute the holding means 251. The actuator 45a as the tilting means is attached to the frame body 41, and the holding member 45 can be tilted from the vertical state of the nozzle N as shown in FIG. 5 by the tilt angle θ as shown in FIG. . This inclination angle θ is, for example, 45 degrees with respect to the vertical line VL in FIG. 7. Nozzle N
Is detachably attached to the holding member 45 by using the nozzle holder 44. The nozzle N has a cylindrical shape that allows the wire W to pass therethrough.

As shown in FIG. 1, the three-axis unit 70 as a moving means includes an X-axis stage 71, a Y-axis stage 72,
The Z-axis stage 73 is provided. The X-axis stage 71 is
It is mounted on the guide rail of the Y-axis stage 72. Motor 7
When the feed screw 71b is rotated by operating 1a, the X-axis stage 71 can be moved and positioned in the X-direction along the rail of the Y-axis stage 72. The Y-axis stage 72 is mounted on the rail 72c of the base 400, and the Y-axis stage 72 can be moved and positioned in the arrow Y direction by operating the motor 72a and rotating the feed screw 72b.
The Z-axis stage 73 is a vertical plate 71e of the X-axis stage 71.
Is installed on the drive screw 7 by operating the motor 73a.
By rotating 3b, the Z-axis stage 73 can be moved and positioned in the arrow Z direction. The fixing member 74 (see FIG. 2) of the nozzle unit 40 is fixed to the upper end portion of the Z-axis stage 73 as described above. From this,
By moving the X-axis stage 71 in the X direction, the holding means 251 and the actuator 45a, which is the tilting means, of the wire rod hanging device 250 in FIG. 5 can move in the X direction.

When the nozzle N hooks the wire W around the bobbin end 12 as shown in FIG. 9 and winds the wire W, the X stage 41 and the Y stage 42 in FIG. 2 do not move. It is like this. That is, the rotation of the groove cam 50 is mechanically stopped.

The triaxial unit 70 shown in FIG. 1 has the nozzle unit 40 as a whole, as described above. Since it can move in the Z direction, the wire W from the nozzle N can be wound around the winding terminal 13 shown in FIG. The nozzle N is
A state in which the frame 41 is positioned above the binding terminals 13 of the bobbin B positioned at the wire winding position WP in FIG. 5 by the Z-axis stage 73 rising, and the wire W is held by the chuck 61. It is supposed to wait at.

Next, the operation of the winding device 200 and the operation of the wire rod hanging device 250 will be described. This operation is performed by a command from the control unit 100. As illustrated in FIG. 11, the conveyor 501 of the transport unit 500 transports the pallet PA to a position facing the transfer unit 20. Palette PA
Is moved to the transfer unit 20 side, and the bobbin B of the pallet PA is moved by the transfer pallet 20 to move the transfer position TP.
To the winding jig transfer position JTP. That is, the chuck 21 of the transfer unit 20 in FIG. 4 sandwiches the bobbin B of the pallet PA, and the rotation drive unit 24 operates to reverse the transfer unit 20 by 180 degrees. As a result, the bobbin B faces the winding jig 31 of the rotary spindle 33,
As the slide portion 22 slides in the direction of the arrow Y, the bobbin B is fitted into the bobbin holder 22 of the bobbin holder 31 of the rotary spindle 33 of the winding jig 31 as shown in FIG. Then, when the chuck 21 of FIG. 4 is opened and the slide portion 22 is retracted, the chuck 21 is separated from the bobbin B.

Next, the rotary drive unit 34 of FIG.
The body frame 32 of the spindle unit 30 is indexed by 180 degrees. Therefore, the bobbin B is positioned from the winding jig transfer position JTP of FIG. 4 to the wire winding position WP. FIG.
Indicates that the bobbin B is positioned at the wire winding position WP. In this state, the spindle 33 is operated to position the binding terminal 13 on the nozzle N side. As shown in FIGS. 5 and 9, the bobbin B has a binding terminal 13, a bobbin end 12, two sets of winding portions 11a, 11a, and the like.

As shown in FIG. 5, the chuck 61 holds the end of the wire W supplied by the nozzle N. And FIG.
The X-axis stage 71, the Y-axis stage 72, and the Z-axis stage 73 of the 3-axis unit 70 are operated to selectively move the nozzle N in the X, Y, and Z directions as shown in FIG. 5 (RV direction). The wire rod of the nozzle N in FIG. 5 is entangled with the one entanglement terminal 13. The end of the extra wire W after tangling is
It is cut by the chuck 61, and the chuck 61 discharges the waste material to the outside. As described above, when the wire W is entangled with the entanglement terminal 13, the rotation of the rotary cam 50 of FIG. 2 is mechanically stopped, and the X stage 41 and the Y stage 42 of FIG. 2 move respectively. You need to be careful not to.

Next, the spindle 33 shown in FIG.
The binding terminal 13 of the bobbin B is located on the lower side and the end 12
Should be located on the upper side. Then, the wire W supplied from the nozzle 43 includes two sets of winding parts 11 of the bobbin B.
Two tracking coils 11 are wound around a and 11a as shown in FIGS. 6, 9 and 10. First, the nozzle N is positioned at the first winding origin OP1 and is rotated counterclockwise CCW (clockwise CW when viewed from above) as viewed from the rotary cam 50 or the cam shaft of FIG.
The X stage 41 and the Y stage 42 are moved in the X and Y directions, respectively. As a result, the nozzle N, which is integrated with the X stage 41, winds a predetermined number of turns while forming a left-handed rectangular locus TL1 as shown in FIG. 8, and as shown in FIG. , 11a, one tracking coil 11 is wound. When the X stage 41 and the Y stage 42 move in the X and Y directions, the elastic bodies 43 and 44 assist the driving, so that the cam followers 52 and 53 are smoothly guided by the grooved cam 50.

When the winding of the tracking coil 11 is completed, the nozzle N shown in FIG. 6 is at a predetermined position as shown in FIG. 6 in a state where tension is applied to the wire W and the nozzle N is vertical. Stop. A sensor (not shown) can detect whether or not the nozzle N is positioned at the first winding origin OP1.

Next, the actuator 45a of the wire rod hanging device 250 is operated to incline the nozzle N at an inclination angle θ with respect to the vertical line VL as shown in the state of FIGS.
Then, as shown in FIG.
5 degrees), the X of the 3-axis unit 70 in FIG. 1 is tilted.
The axis stage 71 is moved in the X direction. As a result, the X stage 41 moves together with the holding member 45 and the nozzle N with the arrow X.
Moving in the direction of 1, the wire W passes under the end 12 and is hung on the end 12 as shown in FIGS. 8 and 9. This state is schematically shown in FIG. The nozzle N linearly moves along the direction of the arrow X1 and the wire W performs a hooking operation (wire hooking operation) on the bobbin end portion 12. In this case, FIG.
The rotation of the rotary cam 50 is mechanically stopped, and the movement of the X stage 41 and the Y stage 42 in FIG. 2 in the X and Y directions is stopped.

Next, as shown in FIG. 8 again, the nozzle N is repositioned along the vertical direction by the operation of the actuator 45a shown in FIG. Then, the nozzle N is positioned at the second winding origin OP2, and the rotary cam 50 of FIG.
By rotating in the clockwise direction CW when viewed from the camshaft side (counterclockwise CCW when viewed from above), the X stage 41 and the Y stage 42 in FIG. 2 move in the X and Y directions, and the right side shown in FIG. The nozzle N moves in a rectangular shape by a predetermined number of turns along the winding trajectory TL2. As a result, as shown in FIG. 10, the tracking coil 11 can be wound between the remaining sets of winding portions 11a and 11a. When the X stage 41 and the Y stage 42 move in the X and Y directions, the elastic bodies 43 and 44 assist the driving, so that the cam followers 52 and 53 are smoothly guided by the grooved cam 50.

After this, as shown in FIG.
The bobbin B is inverted 180 degrees again by 3, and the nozzle N entangles the end of the wire W with respect to the remaining entanglement terminal 13. Then, the chuck 61 cuts the end portion of the wire W, and ends the operation of applying the wire to the windings of the two sets of tracking coils 11 and 11 and the bobbin end 12 as shown in FIG. Whether or not the nozzle N is positioned at the second winding origin OP2 is detected by a sensor (not shown). By the way, the reason why the coils 11 and 11 are wound in the opposite directions as shown in FIG. 8 is as follows.

That is, since there is a magnetic flux GF of the magnet MG of the optical pickup of FIG. 8 and a current flows in the coils 11 and 11 in the direction shown in the figure, a magnetic flux is generated from the coils 11 and 11 according to the law of the right hand screw. Considering the combined magnetic flux of the magnetic fluxes of the coils 11 and 11 and the magnetic flux GF of the magnet MG,
Since the magnetic fluxes on the right side of the coils 11 and 11 coincide with each other, the magnetic flux is dense, and the magnetic flux on the left side is coarse, so that a force 2F is generated on the right side of the coils 11 and 111. That is, one coil 1 is prepared by preparing the coils 11 and 11 in opposite directions.
The driving force for tracking is doubled compared to 1.

Thus, the wire rod hanging device 250 of the present invention
When winding the wire W around the rectangular winding parts 11a, 11a of the bobbin and winding the wire W around the other winding parts 11a, 11a, the end of the bobbin located in the middle of the winding parts 11a, 11a. Part 1
Next, the wire W is hung on the lower side of the second winding 2, and the above-mentioned another winding portion 11 is provided.
In order to supply the wire rods to a and 11a, the wire rod hanging device 25
In the case of 0, the nozzle N is inclined so that the wire W can be easily routed in a short time. Bobbin B
By arranging the wire W along the end surface BT (see FIG. 9) of the above, it is possible to prevent the risk of cutting the wire due to slack of the wire or the like. In addition, according to the winding device of the present embodiment,
The time for winding the two coils 11, 11 as shown in FIG.
It took 0.2 seconds per turn, and when winding two coils by the conventional method, it took 0.5 seconds per turn.

The present invention is not limited to the above embodiment. In the above-described embodiment, the actuator 45a of the wire rod hanging device 250 operates to tilt the nozzle N with respect to the vertical line VL. However, the present invention is not limited to this. For example, the nozzle N may be positioned in the vertical direction and the spindle 33 side in FIG. 6 may be inclined.

[0045]

As described above, according to the present invention,
When the wire is wound around the object by forming the coil by supplying the wire through the nozzle and moving the nozzle, the middle of the wire can be easily hung on the projecting end of the object.

[Brief description of drawings]

FIG. 1 is a perspective view showing a preferred embodiment of a wire winding device (winding device) including a preferred embodiment of a wire hanging device according to the present invention.

FIG. 2 is a perspective view showing the structure of the nozzle unit shown in FIG.

FIG. 3 is a perspective view showing the nozzle unit of FIG. 2 in more detail.

FIG. 4 is a perspective view showing a transfer unit and a spindle unit.

FIG. 5 is a perspective view showing the wire rod hanging device, showing a state in which the nozzle is held in a vertical state and the binding terminal of the bobbin is positioned on the nozzle side.

FIG. 6 is a diagram showing a state in which a nozzle has a tracking coil wound around a winding portion of a bobbin.

FIG. 7 is a perspective view showing a state in which the nozzle is tilted and a line is applied to the end of the bobbin.

FIG. 8 is a conceptual diagram showing a track of a winding of a tracking coil and a hooking operation in which a wire is hung on an end portion.

FIG. 9 is a diagram showing a state in which the nozzle is tilted and a wire is being hung on the end portion of the bobbin after winding one tracking coil.

FIG. 10 is a perspective view showing a state in which two sets of tracking coils are formed.

11 is a side view showing the entire wire winding device (winding device) of FIG. 1. FIG.

FIG. 12 is a plan view showing an upper groove of the rotary cam shown in FIG.

FIG. 13 is a rear view showing the lower groove of the rotary cam.

FIG. 14 is a sectional view of a rotating cam.

FIG. 15 is a diagram showing an example of a timing chart of a rotating cam in the X and Y directions.

16 is a diagram showing an example of a rectangular trajectory of the nozzle formed by the timing chart of FIG.

FIG. 17 is a view showing an example of a conventional bobbin.

FIG. 18 is a perspective view showing an example of a bobbin around which a tracking coil is wound by a wire rod hanging device of the present invention of a different type from the bobbin of FIG.

19 is a perspective view showing a state in which two sets of tracking coils are wound around the bobbin of FIG.

FIG. 20 is a plan view showing an example of a bobbin provided on a normally used optical pickup.

[Explanation of symbols]

11 ... Tracking coil, 12 ... End of wire bobbin (end of protrusion), 20 ... Transfer unit, 30 ... Spindle unit, 40 ... Nozzle unit, 45 ... Nozzle holding member, 45a
..Actuator (tilting means), 60 ... Holding unit, 70 ... 3-axis unit (moving means), 100 ...
..Control unit, 200 ... Wire rod winding device (winding device),
250 ... Wire rod hooking device, 251 ... Nozzle holding means, 300 ... Wire rod supply means, B ... Bobbin (object), W ... Wire rod, θ ... Nozzle tilt angle, N
··nozzle

Claims (5)

[Claims] 1. When a wire is supplied through a nozzle and the nozzle is moved to wind the wire around the object to form a coil, the wire is hung midway on the projecting end of the object. In a wire rod hanging device, a holding means for holding a nozzle, a nozzle held by this holding means, an inclining means for inclining the position of a projecting end of an object, and a holding means for moving and inclining A wire rod hooking device, comprising: a moving member that hooks a wire rod supplied from a nozzle on a protruding end of an object. 2. The object is a bobbin, and the coil is a tracking coil for moving the objective lens of the optical pickup in the tracking direction by a magnetic attraction force.
The wire rod hooking device according to claim 1, wherein two tracking coils are formed side by side on a bobbin with a space therebetween, and projecting end portions are arranged in the vicinity of both tracking coils. 3. The wire rod hanging device according to claim 1, wherein the tilting means is a rotary actuator, and the actuator tilts the nozzle with respect to the protruding end. 4. When a wire is supplied through a nozzle and the nozzle is moved to wind the wire around the object to form a coil, the wire is hung midway on the protruding end of the object. In a wire rod hanging method, a nozzle is held perpendicular to an object to form a first coil on the object, and then a nozzle is held perpendicular to the object to form a second coil. When doing so, hold the nozzle from the vertical state to the inclined state, hang the wire rod on the protruding end of the object arranged near the first coil and the second coil, and re-inject the nozzle. A method for hooking a nozzle to a wire, the method comprising holding the object perpendicular to the object and forming a second coil on the object. 5. The object is a bobbin, and the coil is a tracking coil for moving the objective lens of the optical pickup in the tracking direction by a magnetic attraction force.
The wire rod mounting method according to claim 4, wherein one tracking coil is formed side by side on the bobbin with a space therebetween, and a protruding end portion is disposed in the vicinity of both tracking coils.