JPH02299735A - Winding device - Google Patents

Abstract

PURPOSE:To execute the aligning winding of a wire and to prevent the wire from being loosened by guiding a loop part of the wire to a part to be wound, and sucking the wire by force reverse to gas pressure immediately before the wire is wound round the part to be wound. CONSTITUTION:When a wire 5 is brought to vacuum suction by a suction port body 62b, and simultaneously, a wire hook 59 is allowed to descend and brought to drawback from the wire 5, a loop part 8 is drawn into the inside of a guide groove 35 gradually while being guided by the guide groove 35. In this case, as for the loop part 8 of the wire 5, the deflection in the vertical and the left and right directions is controlled by the guide groove 35, therefore, the wire 5 is guided surely to a vertical part 7 of a core 2. At this time, since air is blown out of an air nozzle provided on the upper guide member 20, the wire 5 is pressed against the reference surface of the lowest end face of a winding hole 6. In this regard, vacuum suction nozzles 38, 38 are provided near the inside end part of the guide grooves 35, 35, and the wire 5 is sucked by these nozzles 38, 38, therefore, it is prevented that the wire 5 is loosened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a winding device for winding a wire around a workpiece having a winding hole in its head, such as a magnetic head.

(Prior art) The magnetic helad 1 used in VTRs etc. has an 11th
As shown in the figure, there is one that has two cores 2, 2 at the end. The cores 2, 2 of the magnetic head 1 each have annular frame-shaped wound portions 3, 3 arranged on the same plane (with axes aligned in parallel) with a gap 4 in between. A coated wire 5.5 is wound around the inside and outside of the winding hole 6 of each of these wire-wound parts 3, 3.

The winding of the wire 5 in the magnetic head 1 is automatically performed by a winding device.

To explain this winding device, Fig. 12 and 1
As shown in FIG. 3, a wire insertion section 50 is formed along the horizontal direction, and a work holder 12 is provided at the center of this wire insertion path 50. At both ends of the wire insertion path 50,
A pair of wire insertion devices 52a and 52b are provided.

Although the work holder 12 is not shown in detail, it is designed to hold the magnetic head 1 with the wire-wound parts 3 and 3 arranged parallel to each other, and the lower part of the work holder 12 is used for lifting and lowering. It is connected to the piston 54 of the air cylinder 53, and the center portion is connected to the output shaft 5 of the pulse motor 55.
6, it is connected to be movable up and down.

Therefore, the work holder 12 is raised and lowered by the operation of the lifting air cylinder 53, and thereby the magnetic head 1 can be raised and lowered, and the work holder 12 can be rotated about the center by the operation of the pulse motor 55. There is.

A tension mechanism 51 is provided on the right side of this work holder 12.
is provided. The tension mechanism 51 is constructed by connecting an air cylinder 57 for vertical driving to the lower part of the work holder 12, and attaching a shaft-shaped wire bin 59 having a bin-shaped locking part 58 to the rod of this air cylinder 57. It is.

On the other hand, the wire insertion devices 52a and 52b each have sliders 60a and 60b that are movable in, for example, left and right directions, and these sliders 60a.

60, an air cylinder 61 is installed along the wire insertion path 50.
It is equipped with a and 61b. Air cylinders 61a, 6
Wire suction port bodies 62a, 62b connected to the vacuum pump are attached to the tip of the piston 1b, and the wire suction port body 62a.

Fingers 63a and 63b are provided on the front side of 62b to open and close in response to the forward and backward movements of the suction ports 62a and 62b.

Note that the fingers 63a and 63b are connected to the suction opening bodies 62a and 6.
The suction port body 62a has a structure in which a urethane clamp 65°65 is provided at the tips of two leaf springs 64, 64 connected to the base side of the suction port body 62a.

It opens when 62b moves forward, and closes when it moves backward.

Further, in the front stage of each finger 63a, 63b, for example, an upper and lower pair of rollers 66.66 and the roller 66.6 are provided.
A wire feeding section 67a is formed by combining a driving mechanism (not shown) for driving the wire feeding section 67a.

67b is installed so as to be movable in a direction perpendicular to the wire insertion path 50, and these wire feeding parts 67a,
67b are each connected to an air cylinder 68, and are advanced into the wire insertion passage 50 to be positioned or retreated from the wire insertion passage 50.

When winding the magnetic head 1, first, the work holder 12 holds the magnetic head 1 in such a way that the winding parts 3, 3 protrude from the upper part of the work holder 12. Note that the winding hole 6 of one of the wire-wound portions 3 is set toward the wire insertion devices 52a and 52b. Next, for example, the left wire feeding section 67a moves forward toward the wire insertion path 50, and is positioned so as to face one of the wired sections 3.

After this, the wire 5 is fed out using the rollers 66, 66, and the suction port 6 of the wire insertion device 52b on the opposite side is fed out.
By applying vacuum pressure to 2b (vacuum suction), the wire 5 is inserted into the winding hole 6 of one of the wire-wound parts 3, as shown in FIG. Thereby, the wire 5 is stretched between the wire-wound portion 3 and the right wire insertion device 52b. Then, the first
As shown in FIG. 5, the right suction port body 62b is retracted,
The drawn end side of the wire 5 is held by the fingers 63b. Then, the wire bin 59 is raised by the operation of the cylinder 57 shown in FIG. 13, and the locking portion 58 at the tip locks the portion of the wire that has just been inserted through the winding hole 6, as shown in FIG. Then, the drawn end side of the wire 5 is moved to an upper region where it does not interfere with the wire-wound portion 3 of the other head 2. At this time, tension is applied to the wire 5, and the wire 5
gradually comes out from the finger 63a. Then, with the wire 5 under tension, the pulse motor 55 is driven to move the magnetic head 1 into the wire bin 5.
It is rotated by 18.0@ with 9.

After that, as shown in FIG. 17, the magnetic head 1 is raised by the lifting air cylinder 53, and as shown in FIG. 5
It can be inserted into the drawer end side. At the same time, the 19th
As shown in the figure, the wire pin 59 is lowered to release the engagement of the wire 5, and at the same time, the gripping of the wire is switched from the fingers 63b to the suction port body 62b to vacuum the wire 5. As a result, the wire 5 is wound around the frame portion of the winding hole 6 of the wire-wound portion 3 on the gap 4 side, that is, the vertical portion 7 .

In this way, the wire 5 is wound once around the vertical portion 7 of the winding portion 3 of the core 2.Next, the wire 5, which has been attracted to the suction port body 62b, is pulled out from the pull-out side end.
The wire is inserted into the winding hole 6 of the core 2 from the suction body 62b side, and the end on the drawer side is chucked by the suction port body 62a of the one wire insertion device 52a. And this suction port body 6
2a is retracted, and as shown in FIG. 20, the finger 63a
switches the wire 5, the wire pin 59 rises, and the locking part 58 pushes up the wire 5. Next, work holder 1
2 is rotated 180' in the same direction as above, the wire pin 59 is lowered, and the finger 63a pulls the wire 5, thereby winding the wire around the vertical portion 7 of the core 2 a second time.

Thus, the left wire insertion device 52a.

By using the wire insertion device 52b on the right side to alternately feed the wire 5 and make a predetermined number of turns, the wire is wound around the wire-wound portion 3 of the head core 2.

(Category report to be solved by the invention) However, in such a wire winding device, during the operation shown in FIGS. 18 to 19, and when one wire insertion device 5
A loop portion 8 is generated in the wire 5 when the wire is transferred from the wire insertion device 2a to the other wire insertion device 52b.

Such a loop portion 8 is not stable in the vertical and horizontal directions, and when it is wound around the vertical portion 7, the wire 5 swings and is wound around the upper horizontal portion of the core 2, as shown in FIG. defects will occur. Furthermore, even if the wire 5 is wound around the regular vertical portion 7, the wire 5 is wound on top of the already wound wire 5, and as shown in FIG. This results in a winding state in which the gap 4 is narrowed or the gap 4 is closed, resulting in the inconvenience that the wire 5 cannot be passed between the cores 2 .

In particular, when tightening the loop part 8, the loop part 8 gradually becomes smaller by pulling the wire 5, but when the wire 5 is wound around the core 2, there is no means to restrict the wire 5, and as shown in FIGS. As shown in the figure, just before the wire 5 is wound, the wire 5 swings out and is wound on top of the wire 5 that has already been wound, or is wound with a gap, making it impossible to wind the wires in an aligned manner. There is a problem.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to create a winding system that can prevent wire deflection and perform aligned winding even immediately before the wire is wound around the wound part. The aim is to provide equipment.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a method in which the loop portion of the wire formed around the wound portion during winding is inserted into the winding hole in the forward direction in the direction of insertion of the wire into the winding hole. A wire guide means having a guide groove for guiding the wire in the direction of the wire-wound portion is provided, and when the wire is wound around the wire-wound portion, the wire is wound in a direction perpendicular to the direction of the wire-wound portion. A gas pressure applying means is provided to apply gas pressure from a direction substantially coaxial with the part to closely align and wind the wire, and further, the gas pressure applying means suctions the wire with a force in the opposite direction to the gas pressure to apply gas pressure to the part to be wound. The present invention is characterized in that a suction means is provided to prevent the wire from sagging at the winding position.

(Function) According to the present invention, the loop portion of the wire is forcibly guided to the part to be wound by the guide groove of the wire guide means, so that swinging of the loop part is prevented, and moreover, the loop part of the wire is prevented from being wound around the part to be wound. The wire is brought into close contact with the adjacent wire by the gas pressure applying means, and at this time, the slack of the wire is prevented by the suction means that applies a force in the opposite direction to the gas pressure applying means, thus making it possible to tightly wind the wire in an aligned manner.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 6.

FIG. 1 shows the main parts of the winding device. Reference numeral 11 denotes a work holding mechanism, which is composed of a work holder 12, a rotation mechanism 13 that rotates the work holder 12 in forward and reverse directions, and a minute elevating mechanism 14 that slightly moves the work holder 12 in the vertical direction.

A holding part 15 for holding a magnetic head 1 as a workpiece is provided at the upper end of the work holder 12, and the cores 2, 2 of the magnetic head 1 are placed on a rotation axis S rotated by the rotation mechanism 13. It is located in

The minute elevating mechanism 14 includes a pulse motor 16, a ball screw 17 rotated by the pulse motor 16, and a screw screwed into a protrusion 12H provided on the work holder 12 and screwed into the ball screw 17. It is formed by a hole 18, and the rotation of the ball screw 17 is converted into linear motion, thereby making it possible to slightly feed the work holder 12 in the vertical direction.

Further, a lower guide member 19 is provided on the work holder 12 of the work holding mechanism 11 so as to be movable up and down.

The lower guide member 19 has four parts 2 that enclose the holding part 15.
2, and a pair of guide pieces 23, 23 on both sides of the recess 22. Therefore, the pair of guide pieces 23, 23 are opposed to each other so as to sandwich the cores 2, 2 from the left and right sides. A support shaft 24 is protruded from the lower end of the lower guide member 19, and this supports the work holder 12.
It is inserted into a support hole 25 provided in the support hole 25 so as to be vertically movable. A spring 26 is wound around the support shaft 24 for elastically supporting the lower guide member 19 by urging it upward relative to the work holder 12 .

A lower air cylinder 27 is fixed to the work holder 12, and a hooking member 29 is provided at the tip of a rod 28 of the lower air cylinder 27 to be hooked to the lower guide member 19 only when descending. can be evacuated downward.

Above the work holder 12, this work holder 1
A guide stand 30 is provided opposite to 2. An upper guide member 20 is supported on the guide stand 30 so as to be movable up and down, facing the lower guide member 19 . The upper guide member 20 is driven in the vertical direction by an upper air cylinder 31, and its stroke is controlled by a stopper 3.
2.

The upper guide member 20 and the lower guide member 19 are opposed to each other and abut against each other from above and below so as to intersect with the loop portion 8 of the wire 5.

The upper surfaces of the pair of guide pieces 23 and 23 of the lower guide member 19 are formed into flat surfaces 33, as shown in FIGS. 2 to 4. On the other hand, the upper guide member 20
The guide pieces 23 and 23 are located in the center on the lower surface of the
A recessed portion 34 is formed opposite to the gap 23a between the recessed portion 34 and guide grooves 35° 35 are provided in the left and right direction sandwiching the recessed portion 34. These guide grooves 35°3
5 has a tapered shape that gradually becomes narrower toward the recessed fitting portion 34, that is, toward the center, and its depth is set to several tens of μm so that the wire 5 can run smoothly. It acts as a guide leading to Core 2.

The guide groove 35.35 becomes a flat square hole when the lower surface of the upper guide member 20 comes into contact with the flat surface 33 of the guide piece 23.23, and the wire 5 is inserted through this flat square hole.

Furthermore, the core 2 of the magnetic head 1 held by the holding part 15 is located at the bottom of the recessed part 34 of the upper guide member 20.
An air nozzle 36 is provided opposite 2, and this air nozzle 36 is connected to an air supply source (not shown). This air nozzle 36 constitutes an air pressure applying means 37 of the present invention.

Furthermore, the guide formed in the upper guide member 20? A vacuum suction nozzle 38.38 opening downward is formed in m35.35 at a position as close as possible to the recessed portion 34. These vacuum suction nozzles 38.38 have an opening diameter approximately equal to the width of the guide groove 35.35, and are connected to a vacuum pump (not shown). This vacuum suction nozzle 38.degree. 38 constitutes the suction means 39 of the present invention.

Next, the operation of the winding device configured as described above will be explained.

The rotation mechanism 13 is capable of rotating the work holder 12 by 180' around its rotation axis S, and is held by the work holder 12 when the wire 5 is wound around the vertical part 7 of the wire-wound part 3 of the core 2. By rotating the magnetic head 1, the core 2 can be reversed. In addition, the minute lifting mechanism 14
The work holder 12 can be rotated in forward and reverse directions by a pulse signal manually inputted to the pulse motor 16, and by rotating the ball screw 17, the work holder 12 can be moved up and down. therefore,
The height of the core 2 is finely adjusted when winding the wire 5 around the core 2, and the pitch feed corresponding to the diameter bone of the wire 5 is performed for each winding.

Next, a procedure for winding the wire 5 around the vertical portion 7 of the core 2 using the winding device configured as described above will be explained.
This procedure is as shown in FIGS. 14 to 20, and description of the same parts will be omitted.

First, when first inserting the wire 5 into the winding hole 6 of the core 2, the lower air cylinder 27 and the upper air cylinder 31 are respectively contracted, and the lower guide member 19 and the upper guide member 20 are moved along the solid lines in FIG. The cores 2 are vertically spaced apart from each other as shown in FIG.

In this state, the wire 5 is wound around the vertical portion 7 of the core 2 as shown in FIGS. 14 to 20, and a loop 8 is formed in the wire 5 as shown in FIG. As shown in a), the lower air cylinder 27 and the upper air cylinder 3
Operate 1 for a long time.

When the lower air cylinder 27 extends, the lower guide member 1
9 is free, but since it is pressed upward by the spring 26, the lower guide member 19 has four parts 22
rises L until it contacts the holding part 15. Further, the upper guide member 20 is moved to the stopper 3 by the upper air cylinder 31.
-1 part guide member 20 and lower guide member 19 contact each other from below -L. Therefore, the loop portion 8 formed on the wire 5 fits into the flat rectangular hole formed between the wire 5 and the flat surface 33 of the lower guide member 19, that is, the guide groove 35 of the upper guide member 20.

Therefore, as shown in FIGS. 5(b) and 5(C), the wire 35 is vacuum-suctioned by the suction port body 62b, and at the same time,
When the wire hook 59 is lowered and retracted from the wire 5, the loop portion 8 is gradually drawn into the guide groove 35 while being guided by the guide groove 35. At this time, wire 5
Since the loop portion 8 is prevented from swinging vertically and horizontally by the guide groove 35, the wire 5 is reliably guided to the vertical portion 7 of the core 2. At this time, since air is being ejected from the air nozzle 36 provided in the upper guide member 20, the wire 5 just before being wound around the vertical portion 7 is pressed upward. In other words, it is pressed against the reference surface of the lowermost end surface of the winding hole 6.

By the way, the wire 5 that is pushed downward by the air jet from the air nozzle 36 may actually become slack due to the air pressure.

In other words, as shown in FIG. 2, since the core 2 is attached to the magnetic head 1, a gap g is ensured between the core 2 and one guide piece 23 to allow the thick bone of the magnetic head 1 to escape. Ru. As this gap g becomes larger, the distance between the inner open end of the guide groove 35 and the wound portion 3 of the core 2 becomes longer.
Moreover, since there is nothing to support the wire 5 from below, the wire 5 receives air pressure from the air nozzle 36 and sag as shown by the imaginary line 5'.

However, in the present invention, vacuum suction nozzles 38, 38 are provided near the inner end of the guide groove 35° 35, and the wire 5 is suctioned by these nozzles 38, 38, so that the wire 5 is prevented from sagging. .

Therefore, the wire 5 can be reliably wound at a predetermined position on the vertical portion 7 of the wire-wound portion 3.

By repeating such operations, the wire 5 is wound around the vertical portion 7 of the core 2 a plurality of times, and each time the wire 5 is wound, the fine elevating mechanism 14 moves the wire 5 by a pitch corresponding to its diameter. That is, as shown in FIGS. 6(a) to 6(d), the core 2 is lowered by one pitch each time it is wound, so that the wire 5 is wound around the straight portion 7 in an aligned state. Moreover, at this time, since air is being blown out from the air nozzle 36 provided in the upper guide member 20, the wire 5 just before being wound around the vertical portion 7 is pressed downward and pressed against the already wound wire 5. Therefore, the wires 5 are wound in a closely wound alignment state.

In addition, by providing the vacuum suction nozzles 38, 38, it is also possible to advance the winding of the wire 5 from the top to the bottom with respect to the vertical portion 7.

That is, in the case of the air nozzle 36 that blows out air, when the wire is wound on top of the wire wound under the vertical part 7, it is possible to closely align the wire by pressing downward from the vertical part 7, but with the vacuum suction nozzle 38. 38, on the other hand, when the wire is wound under the wire wound on the vertical part 7, suction is applied from the bottom to the top, so that the wire can be closely aligned.

In the above embodiment, the work holder 12 constituting the work holding mechanism 11 is provided with the minute lifting mechanism 14,
Although the magnetic head 1 was made to move slightly in the vertical direction, the seventh
As in the second embodiment shown in the figure, even if the guide table 30 is provided with a slight elevating mechanism 40 to slightly move the upper guide member 20 in the vertical direction and pitch-feed upward or downward for each winding, The aligned winding states (a) to (d) shown in FIG. 6 are obtained.

Further, in the above embodiment, air is ejected from the air nozzle 36 to align the winding end immediately before the wire 5 is wound. However, as in the third embodiment shown in FIG. 19 may be provided with a vacuum suction nozzle 41, and the wires 5 may be drawn downward by vacuum suction pressure to wind them in alignment.

Furthermore, in each of the above embodiments, the air nozzle 36 and the vacuum suction nozzle 38 were formed separately, but only one of them is formed, and this piping is connected to the compressed air source and the vacuum source so as to be switchable, and the air nozzle 36 and vacuum suction nozzle 38 are formed separately. It may be used by switching between ejection and air suction.

Also, instead of using the vacuum nozzle 38, as shown in FIG. 9 as a fourth embodiment, the guide groove 35.
5 may be provided with static electricity generating members 42, 42 or magnets, and the wire 5 may be attracted to the upper guide member 20 side by these static electricity generating members 42, 42 or magnets.

Further, in the above embodiment, the case where the wire 5 is wound around the inner vertical part 7 of the magnetic head 1 having two cores 2.2 has been described, but as shown in FIGS. 10(a) to (C), , inner and outer vertical parts 7a, 7b of the magnetic head
The present invention can also be applied to the case where the wire 5 is wound around the vertical part 7 of a magnetic head having one core, and when the wire 5 is wound around the horizontal part 7c of the core 2.

Furthermore, the air pressure applying means may use an inert gas instead of air.

[Effects of the Invention] As explained above, according to the present invention, it is possible to guide the loop portion of the wire to prevent the loop portion from swinging, and to prevent the wire from swinging immediately before the wire is wound around the wound portion. By applying air force to bring the wire into close contact with the wire that has already been wound, it is possible to wind the wire in close alignment, and since the wire is attracted against the air force, the winding is on the verge of winding. This prevents the wire from sagging and enables highly accurate closely aligned winding.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the present invention,
Figure 1 is a front view showing the main parts of the winding device, Figure 2 is a front view of the wire guide mechanism, Figure 3 is a side view of the same, Figure 4 is a bottom view of the upper guide member, and Figure 5 (a). ) to (c) are perspective views showing the action of the wire guide mechanism, FIGS. 6(a) to (d) are sectional views showing the action of pitch feeding of the core, and FIG. 7 is a second embodiment of the present invention. FIG. 8 is a front view of a wire guide mechanism showing a third embodiment of the invention, and FIG. 9 is a perspective view of an upper guide member showing a fourth embodiment of the invention. ,
10(a) to 10(c) are front views showing different magnetic heads, and FIG. 11 and subsequent figures explain the conventional technology.
Figure 1 is a front view showing the configuration of a general magnetic head;
The figure is a plan view showing a schematic configuration of the entire winding device, FIG. 13 is a front view thereof, FIGS. 14 to 20 are perspective views showing the winding procedure, and FIGS. 21 and 22 are conventional winding devices. It is a figure which shows the defective winding state in a wire method. 1...Magnetic head (work), 2...Core, 3...
・Wound part, 5... Wire, 6... Winding hole, 8...
- Loop portion, 12... Work holder, 19... Lower guide member, 20... Upper guide member, 21... Wire guide mechanism, 35... Guide groove, 36... Air nozzle, 37... ... Air pressure applying means, 38 ... Vacuum suction nozzle, 39 ... Suction means. Applicant's agent Patent attorney Takehiko Suzue Figure 4 Figure 8 Figure 9 (a) (b) (c) Figure 1
0Figure 11Figure 17rXJ! Figure 19 Figure 20 Figure 22 rI! J

Claims (1)

[Claims] A wire is inserted into the winding hole of a workpiece in which an annular winding portion having a winding hole is formed, and the lead-out side end of the inserted wire is wound around the winding portion. In a winding device that winds a wire around the wire-wound portion by rotating the wire, the wire is located forward in the direction of insertion into the winding hole, and is brought into contact with and separated from the wire, and is wound around the wire-wound portion. A pair of guide members movable along the wire alignment direction is provided, and at least one of these guide members is provided with a guide groove for guiding a loop portion of the wire generated during the winding to the wound portion, Further, one of the pair of guide members is provided with a gas pressure applying means for applying gas pressure toward the winding portion of the wire in a direction crossing the winding direction of the wire, and further, one of the pair of guide members A wire winding device characterized in that the wire winding device is provided with suction means for suctioning the wire with a force in a direction opposite to the gas pressure applied by the gas pressure applying means.