JPH053125B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wire insertion device for winding a wire around a minute core used, for example, in manufacturing a magnetic head in a magnetic recording/reproducing device.

[Conventional technology]

In the above-mentioned magnetic head, the core hole has dimensions of about 0.2 to 0.6 mm in length and width, and it is necessary to wind a wire with a diameter of about several tens of micrometers around this core hole about 15 to 30 times. When such winding work is to be mechanized, a method as shown in FIG. 6 is used.

That is, a head (gripping section) 42 equipped with a pair of rollers 41 that can be opened and closed grips the wire W with its tip protruding by an appropriate length (a), and the gripping section 42 is moved to grip the wire W. The tip of the wire W is inserted into the core hole from one side (upper side in the figure) of the fixed magnetic head 43, and the suction tube 44 disposed on the other side (lower side) of the magnetic head 43 is inserted into the core hole. Aspirate the wire (b).

Then, the suction tube 44 is rotated in a vertical plane approximately around the magnetic head 43 to move the wire W into the core 4.
5 and return it to the upper side of the core hole.
is gripped again by the gripping section 42 in an inverted state (c),
The gripping part 42 is turned over again on the spot so as to face the core hole again, and the wire W is inserted therethrough, and this process is repeated one after another.

In the above process, since the core hole is very small as mentioned above, the tip of the wire W must always be straight. If this happens, the next insertion process cannot be carried out smoothly, so the tip is cut to a certain length for each insertion process to make it straight (X section in (c)).

[Problem to be solved by the invention]

However, in the conventional technology as described above, the wire must be cut each time it is inserted into the core hole, resulting in a poor yield of the wire itself and high costs.In addition, the initial length of the wire is large. Another problem is that the vertical stroke of the grip portion 42 and the rotation radius of the suction tube 44 become large, resulting in an increase in the size of the device itself.

In addition, since the number of cutting operations for the wire W increases, the cutters are subject to severe wear and tear, resulting in an increase in costs. Furthermore, when the wire W is fed into the core hole by the roller 41, there is instability in that the tip of the wire W is bent due to subtle changes in the contact pressure of the roller 41, and the position needs to be adjusted each time. Ta.

In order to solve the above-mentioned problems, a device has been proposed in which a divisible guide member having a conical or pyramidal inner surface is attached to the insertion side of the core hole (Japanese Patent Laid-Open No. 60-26577). , Utsukai Showa 61-173121
However, in such a guide member having a cone-shaped inner surface, there are problems such as the tip of the wire being easily bent, or especially in the case of a wire having an oval cross section, kinking easily occurs. Ta.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wire insertion device that can accurately insert a wire into a predetermined position of a core hole and perform a winding operation quickly and efficiently.

[Means to solve the problem]

In order to achieve the above object, the present invention grips the tip of the wire with a gripping means, inserts the wire into the core hole from one side of the core supported by the support member, and inserts the tip of the wire into the other side of the core. In a wire insertion device that winds the wire around the core by suctioning the wire through a disposed suction tube and moving the suction tube around the core from the other side of the core to one side, the obstructed portion is connected to the inclined portion. The guide groove has a Y-shaped cross section with one side in the width direction being opened, and the narrowed part of the guide groove is brought closer to the core, and the width direction of the guide groove is aligned with the width direction of the core. a guide member provided so as to be movable in the width direction of the guide groove in line with the width direction of the guide groove, a moving device for moving the guide member in the width direction of the guide groove, and a wire passing through the guide groove of the guide member. The wire is configured to include an air injection nozzle that injects air from the opening of the guide groove toward the inner wall of the guide groove to press the wire passing through the guide groove against the inner wall when the wire is inserted into the core hole.

[Effect]

In such a wire insertion device, when a wire is inserted into the guide groove of the guide member from, for example, above the core, the wire is guided to the upper slope of the guide groove having a Y-shaped cross section, and then passes through the lower part of the guide groove. guided into the stenosis. Further, the wire is pressed against the inner inner wall of the guide groove by air blown from the opening toward the inner inner wall of the guide groove by the air injection nozzle, and is accurately positioned.

The air injected from the air injection nozzle passes through the narrowed part of the guide groove and is rectified and sucked into the suction tube.The narrowed part gives directionality to the wire and causes it to travel straight, so the wire can be inserted into the core hole precisely. It is inserted through the tube and suctioned into the suction tube. Therefore, there are fewer bends and kinks in the wire. After inserting the wire into the core hole, the guide member is moved in the width direction of the guide groove by a moving device to take the wire out from the opening of the guide groove,
Wrap the wire around the core.

〔Example〕

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

In FIGS. 1 to 5, reference numeral 1 denotes a magnetic head, which is fixed to a support portion 2 at approximately the center of the wire insertion device A. In FIGS. A magnetic core 3 is fixedly protruding from the center of the magnetic head 1, and a core hole 4 is formed in the magnetic core 3, which is substantially rectangular in plan view. A rail 5 that extends vertically is arranged behind the support section 2 (in the back of the page in FIG. , a rotating part 8 that is rotationally driven by a drive gear 7, and a main shaft 9 that is slidable back and forth with respect to the rotating part 8 (in a direction perpendicular to the plane of the paper in FIG. 1) are attached. A head 11 is attached to the tip of the main shaft 9. The head 11 has a pair of small-diameter gripping rollers (gripping means) 10 and 10 arranged side by side so as to be openable and closable. Above roller 1
A plastic or ceramic ring is fitted on the outer surface of the rollers 10 and 10, and the head 11 has a mechanism for rotating the rollers 10 and 10 in opposite directions and a mechanism for attaching and detaching the wire W to the rollers 10 and 10. A mechanism (not shown) for opening and closing is provided.

Below the support part 2 in FIG.
A suction tube support member 34 is provided which can be raised and lowered to hold the magnetic head 1 and rotate it about the magnetic head 1 in a plane parallel to the plane of the paper in FIG. In FIG. 1, the suction tube 12 has its lower end connected to a suction pump (not shown), and its tip forms a reduced diameter portion 13 as shown. A pair of leaf springs 14, 14 are fitted on the outside of the suction pipe 12, and these leaf springs 14, 14
The wire W is bent so that it can be opened and closed by the reduced diameter part 13 as it moves up and down relative to each other, and a pad 15 is attached to the inside of the tip to tighten the wire W and prevent it from twisting.

The leaf springs 14, 14 are implanted in the movable member 17, and are stopped from rising by locking the movable member 17 with a locking member 16 fixed at a predetermined position. The movable member 17 is attached to the suction tube support member 34 via a spring 33 so as to be freely vertically movable.

As shown in FIG. 2, a pair of front and rear support plates 18, 18 are provided on the sides of the support part 2, connected by a connecting member (not shown) and a pair of guide shafts 19, 19. A fixing member 20 and a mounting member 21 are slidably attached to the shafts 19, 19, respectively. The fixing member 20 is positioned and fixed to one of the support plates 18 by bolts 22 and springs 23 installed between the fixing members 20 and the support plate 18, and the distance between the fixing members 20 and 20 can be adjusted by the bolts 22.

The fixed member 20 includes an air cylinder (moving device) 2
4 is fixed, and the tip of its piston rod (not shown) is fixed to the mounting member 21, and the operation of this air cylinder 24 causes the mounting member 21 to move through a certain stroke (between the other support plate 18 and the fixing member 20).
(between) the width direction of the magnetic core 3 (the direction in which the wires W wound around the magnetic core 3 are lined up) Ha.

Note that both the support plates 18 and the connecting member are movable and adjustable in the vertical direction and in the direction perpendicular to the guide shaft 19, so that they can be mounted in three axial directions according to the shape of the target magnetic core 3. The position of the member 21 can be adjusted.

A guide member 25 for guiding the wire W into the core hole 4 is fixed to the end of the mounting member 21 . The guide member 25 is made of metal, ceramics, plastic, or the like and is formed into a substantially rectangular parallelepiped shape. At the tip of the guide member 25, a slit-like narrowing part 29 is provided below the inclined part 28, which has a V-shaped cross section that becomes narrower toward the bottom, and one side surface in the width direction Hb is opened. A guide groove 27 having a Y-shaped cross section and an opening 26 is formed.

The guide member 25 brings the narrowed part 29 of the guide groove 27 closer to the magnetic core 3 and also moves the narrow part 29 of the guide groove 27 in the width direction of the guide groove 27.
It is attached to the attachment member 21 with Hb aligned with the width direction Ha of the magnetic core 3.

The head 11 also has an air injection nozzle 3.
0 is attached. Air injection nozzle 30
When the wire W is inserted into the core hole 4 through the guide groove 27 of the guide member 25, air is injected from the opening 26 of the guide groove 27 toward the inner inner wall 27a of the guide groove 27 so that the wire W passes through the guide groove 27. The wire W is pressed against the inner back wall 27a, and the head 1
It goes up and down with 1. The air pressure supplied to the air injection nozzle 30 is adjustable.

In addition, 31 is a reel for supplying the wire W, and 32
is a nip portion for temporarily fixing one end of the wire W. In addition, a cutter (not shown) is provided below the reel 31 to cut the wire W sent out from the reel 31 for one process.

Hereinafter, the operation of the wire insertion device configured as described above will be explained with reference mainly to FIGS. 1 and 5.

First, as shown in FIG. 1, the wire W is pulled out from the reel 31, the rollers 10 and 10 are opened left and right, the wire W is inserted between them, the tip of the wire W is temporarily fixed to the narrow joint 32, and the wire W is pulled out from the reel 31. 10, 10 are closed and the wire W is gripped, and then the wire W is cut at a portion above the rollers 10, 10 using a cutter. Then, the rollers 10, 10 are driven to rotate so that the tip of the wire W protrudes from the head 11 by an appropriate length, and the rotating section 8 is reversed to change the direction of the wire W so that the protruding end is on the lower side. At the same time, the base 6 is lowered so that the head 11 faces the upper surface of the guide member 25 (see FIG. 5a). At this time, the air cylinder 24 is contracted, the guide member 25 is in a predetermined position, and the suction tube 12 is moved upward so that its tip is exposed directly below the core hole 4.

Here, the rollers 10 and 10 are rotated to
When the wire W is fed out, the protruding end of the wire W is guided by the guide member 25.
The head 11 is inserted into the guide groove 27 from above, descends along the inclined part 28, and is guided to the narrowed part 29. At this time, air enters the opening of the guide groove 27 from the air injection nozzle 30 provided in the head 11. 26 and presses the wire W against the inner back wall 27a of the guide groove 27. Thereby, as shown in FIG. 4, the wire W is positioned at a predetermined position in the core hole 4 in plan view.

On the other hand, in order to suction the wire W, the suction tube 12 is raised together with the movable member 17 by the suction tube support member 34. When the movable member 17 engages with the locking member 16 to prevent the leaf springs 14, 14 from rising, the reduced diameter portion 13 of the suction tube 12 gets in between the leaf springs 14, 14, and the pads 15, 15 Open a space. In this state, the rollers 10, 10 rotate, the wire W is fed out and inserted into the core hole 4, and the wire W is sucked by the suction tube 12.

Thereafter, the air cylinder 24 is extended to retract the guide member 25 upward in FIG. 4, and the wire W is brought out of the guide groove 27 through the opening 26. Also. The rollers 10, 10 of the head 11 are opened, the main shaft 9 is slid and retracted, and the wire W is separated from the head 11. The head 11 rises, reverses itself, returns to its initial state, and waits above.

The suction tube 12 is lowered by the suction tube support member 34 while suctioning the tip of the wire W.
At this time, the leaf spring 14 is kept in the raised state until the spring 33 is extended to a predetermined state by the lowering of the suction tube support member 34, so the suction tube 12 is lowered with respect to the leaf springs 14, 14. As a result, the leaf springs 14, 14 return and the pads 15, 15 sandwich the wire W (see FIG. 5b).

As the suction tube 12 descends with respect to the leaf springs 14, 14, the wire W is squeezed by the pads 15, 15 and becomes unkinked. If the wire W is a two-core wire, it has an elliptical cross section, and if there is a twist, it will not be possible to wind the wire neatly, but such a situation can be prevented by the above-mentioned ironing step.

Next, the pads 15, 15, holding the wire W, rotate integrally with the suction tube 12 in a vertical plane approximately centering on the core 4, stop at the upper apex, and wrap the wire W around the core once. Here, the suction tube 12
Directly below the head 11 with the rollers 10, 10 open is protruded, and the wire W stretched between the pads 15, 15 and the core 3 is inserted between the rollers 10, 10, and the rollers 10, 10 are closed ( (See Figure 5c).

After that, the suction tube 12 is connected to the wire W at the pad 15,
15 to release the restraint of the wire W, rotate within a vertical plane, and wait below.
Here, the protruding length of the wire W is adjusted by rotating the rollers 10, 10, and the rotating part 8 is rotated to adjust the protruding length of the wire W.
1, and return to the first step of lowering the base 6 and inserting the tip of the wire W into the guide groove 27 of the guide member 25 (see Fig. 5a). Wrap the wire W around it.

In the above process, the wire W is connected to the guide member 25
The air is guided by the inclined part 28 of the guide groove 27 and is reliably guided to the narrowed part 29, and furthermore, the air injection nozzle 3
Since it is pressed against the inner wall 27a of the guide groove 27 by the air from the guide groove 27, it is accurately positioned at a predetermined position.

In addition, since one side of the guide groove 27 is open, the wire W can be taken out of the guide groove 27 by simply moving the guide member 25 horizontally, so that it does not get in the way when winding the wire W around the core 3. It never becomes.

Furthermore, the air injected from the air injection nozzle 30 passes through the narrowed portion 2 of the guide groove 27, is rectified, and is sucked into the suction tube 12, and the narrowed portion gives directionality to the wire and causes it to travel straight. , the wire W is accurately inserted into the core hole 4 and is sucked into the suction tube 12.

The thickness of the wire W varies depending on the type of magnetic head 1 to be used, but by adjusting the air jet pressure of the air jet nozzle 30, the force that presses the wire W against the inner inner wall 27a, that is, the wire W and the inner inner wall can be adjusted. Optimum positioning can be achieved by adjusting the frictional force with the wall 27a.

〔Effect of the invention〕

As detailed above, since the wire insertion device of the present invention has the above-described structure, it is possible to accurately position a small diameter wire when inserting it into a small core hole, and to smoothly wind the wire. , can be done with good finish. In addition, the air injected from the air injection nozzle passes through the narrowed part of the guide groove, where it is rectified and sucked into the suction tube.The flow guides the wire, and the narrowed part gives the wire directivity. The wire can be inserted into the core hole accurately because the wire travels straight.

[Brief explanation of the drawing]

1 to 5 show one embodiment of the present invention, in which FIG. 1 is a front view showing the configuration of a wire insertion device, FIG. 2 is an enlarged perspective view of the main parts, and FIG.
The figure is a perspective view further enlarging the main parts of Figure 2, and Figure 4.
The figure is a plan view of FIG. 3, and FIG. 5 is a diagram showing the winding process to the core. FIG. 6 is a diagram showing the winding process of a conventional device. 2... Support part, 3... Magnetic core, 4... Core hole, 10... Gripping roller (gripping means), 24...
Air cylinder (moving device), 25...guiding member,
26... Opening, 27... Guide groove, 27a... Inner wall, 28... Inclined part, 29... Narrowing part, 30...
...Air injection nozzle. W...Wire.

Claims (1)

[Claims] 1 The tip of the wire W is held by the gripping means 10, 10 and inserted into the core hole 4 from one side of the core 3 supported by the support member 2, and the tip of the wire W is placed on the other side of the core 3. In a wire insertion device that winds the wire W around the core 3 by suctioning through a tube 12 and moving the suction tube 12 around the core 3 from the other side of the core 3 to one side, there is a narrowed part in the inclined part 28. 29 are arranged in series and one side in the width direction Hb is opened to form a Y-shaped cross section with an opening 26. 27 width direction
A guide member 25 provided to be able to move Hb in the width direction Ha of the core 3; a moving device 24 that moves the guide member 25 in the width direction Hb of the guide groove 27; Through core hole 4
An air injection nozzle 30 that injects air from the opening 26 of the guide groove 27 toward the inner inner wall 27a of the guide groove 27 to press the wire W passing through the guide groove 27 against the inner inner wall 27a when the wire W is inserted into the guide groove 27. A wire insertion device characterized by comprising: