JPS62172706A - Toroidal winding device - Google Patents

Abstract

PURPOSE:To obtain the winding having high reliability in passing wires in wiring by a method wherein, when the tip of a wire passes through a core window, the middle part of the wire which will be wound subsequent to the wire already wound is pulled in the direction where it does not interfere with the wire which passes through the core window, and stress is given to the wire already wound. CONSTITUTION:When the tip part 15' of a wire 15 is moved to the upper part of a core window 2 by rollers 21 and 21', as the middle part 15'' of the wire 15 is moved to a roller couple 30, stress is added to the wire 15'''' located between the already wound wire 15''' and the core winding part 3 and a roller couple 30. As the wire 15''' is pulled by the roller couple 30, the core window 2 is widely opened, and the tip 15' of the wire 15 came out to a notched part receives non-steady force from the turbulent flow of air stream 70 coming from a nozzle 7, and the tip part 15' is conveyed while it is being pushed back to the side of the slider 98 of a core 1. Accordingly, the probability of the tip part 15' to come in contact with the wire 15''' is low, and as the tip part 15' is conveyed at high speed making fine vibrations, its hooking is easily comes off when it comes in contact with the wide wall of the core 1 and the wire 15''', thereby enabling the tip part 15' to pass through the core window 2 without fail.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a winding device for a toroidal core, and particularly to a toroidal winding device suitable for winding a magnetic head.

[Conventional technology]

In the conventional toroidal winding device, JP-A-58-1869
As described in Japanese Patent No. 26, the wire passing through the core window is fed by a pair of tension rollers to increase the amount of wire wound around the core winding portion.

[Problem that the invention seeks to solve]

In the above conventional technology, when tension is applied to the wire already wound by the tension roller when passing the wire tip through the core window, the wire between the tension roller and the core winding part, the tension roller, and the core The tip of the wire that passed through the window interferes,
On the other hand, if no tension is applied to the already wound wire, the wire loosens and blocks the core window, interfering with the wire passing through the core window, so there is a problem that the wire cannot be inserted.

The object of the present invention is to apply tension to the already wound wire without interfering with the wire tip when the wire tip passes through the core window.
The object of the present invention is to provide a toroidal winding device that can provide the desired results.

[Means for solving problems]

The above object is to apply tension by providing a pair of rollers that are rotatably supported and in contact with each other on a plane formed by the wire transport route inside the wire transport route, and a means for rotationally driving one or both of the roller pairs. This is achieved by providing a mechanism.

[Effect]

When the wire is drawn while the roller pair is rotating, the middle part of the wire is wound around the roller pair, and tension is applied to the already wound wire and the wire between the core winding part and the roller pair. Then, the line clamping part of the roller pair moves to the intersection of the perpendicular line drawn from the core winding part to the tangent line of the roller pair and the tangent line of the roller pair, so
When the wire tip passes through the core window, tension can be applied to the already wound wire without interfering with the wire tip.

〔Example〕

FIG. 11 shows the VT which is the object of the winding device according to the present invention.
FIG. 2 is an external perspective view showing an example of a core used for R and the like.

The core 1 is a plate-shaped body made of ferrite and has a thickness of about 0.4 nm, and is molded to have a size of about 2 to 31 mm in length and width. 0.3 W x 0 near the tape sliding surface 95 of this core 1
．． A winding window 2 of about 3 W is formed, and an electric wire 15 with a core wire diameter of about 0.03 u is wound around the winding portions 3 on both sides of this core window 2. The number of turns of this wire 15 varies depending on the product, but is usually about 5 to 15 turns for both the left and right sides. This toroidal core 1 is attached to the tip of a core base 96, and this base 96 is further attached to an upper cylinder (not shown at 01).

FIG. 12 is an external perspective view showing an example of a core used for a magnetic disk or the like. Core 1' is about 04mm thick.
A throat part 97 shaped to about 1 to 2 brocades in length and width,
It consists of a slider part 9B formed with a thickness of 21 mm and a length and width of about 3 to 51 mm, and is made of ferrite. A winding window 2 of approximately Q, 5 w x 0.5 t' is formed in the head portion of this core 1, and a slider portion 98 of this core window 2
A wire 1 with a core wire diameter of about 0.05 mm is attached to the winding part 3 on the opposite side.
5 is wrapped. The number of turns of this wire 15 varies depending on the product, but is usually about 10 to 30 turns.

Hereinafter, one embodiment of a winding device according to the present invention will be described with reference to FIGS. 1 to 10.

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 is composed of a core holding unit 5 that supports the core 1 movably in the XYZ directions with respect to the base 13, and a winding section 79 that winds the wire 15 around the core 1. .

An annular groove 40 is provided on the base 13, and this groove 40 and the groove 4
A cover 12 covering the wire constitutes an annular wire guide 6. A notch 14 is provided in a part of the groove 40, and the core 1 is arranged so that the ends of the notch 14 are located on both sides of the core window 2. A pair of rollers 21 and 21' are placed on the wire insertion side of the core 1 in the groove 40.
In addition, roller pairs 22 and 22' are installed on the opposite side of the core window, and rollers 24 and 24' are installed at two locations in the middle of the groove 40 from roller pairs 22 and 22' to roller pairs 21 and 21'. , so that their rotational axes are perpendicular to the plane formed by the groove 40, and the contact portions of each pair of rollers are located within the groove 40. In addition, roller pairs 21, 21' to 2
Detector 91 that detects the presence or absence of a line on the line exit side of 4/24'
．． 92, 93, and 94 respectively.

FIG. 2 shows a cross section taken along line A-A' in FIG.

That is, an annular groove 40 is provided on the base 13, and the base 13
The plane 41 formed inside the groove 40 is lowered by a length ε slightly larger than the diameter of the wire 15 with respect to the outer plane 42. Further, the corners 43 of the groove 40 on the plane 41 side are rounded. Furthermore, this groove 40. A cover 12 is provided to cover the thousand faces 41 from above. The part formed by the groove 40 and the cover 12 is the line guide 6. The part formed by the gap between the plane 41 and the cover 12 is the slit 10.
It is called.

A pair of rollers 30.3σ is provided inside the line guide 6 so that their rotational axes are parallel to the plane formed by the groove 40 and in contact with each other within the slit 10, as shown in FIG. The shafts of rotation are already wound around the wires 15'
In addition, one end of each wire is connected to the wire guide so as to be perpendicular to the direction in which the tension is applied to pull the intermediate portion 15 of the wire 15 in a direction that does not interfere with the tip end 15' of the wire 15 that has passed through the core window 2. 6, and the other end is located on the opposite side of the one end from the intersection of the rotation axis and the tensioning direction.

As shown in FIG.
It is rotatably supported by the housing 62 and connected to a motor 63 provided in the housing 62 by a coupling 64 .

Further, the roller 30' is rotatably supported by a bearing 66 on a shaft 65 fixed to a bracket 68. This bracket 68 is swingably supported by the housing 62 by a pin 67, and is connected to an air cylinder 69 fixed to the housing 62 by a joint frame.

A cylindrical hole 16 is formed in the center of the annular groove 40 on the base 13.
A tapered portion 17 is provided at the opening of the hole 16.

Tapered part 1 having the same inclination as tapered part 17 of base 13
A groove 20 is provided in a part of the tapered portion 19 of the lid 18 provided with the groove 9, and the lid 18 is attached to the base 13 with screws (not shown). A nozzle 8 is formed by the tapered portion 17 of the base 13 and the groove 20 of the lid 18. Nozzle 8
is connected through hole 38 by joint 11 to a source of compressed air (not shown).

FIG. 3 is an enlarged view of part B of FIG. M1.

As shown in FIG. 3, the cover 12 has lines 15 of the core window 2.
A nozzle 7 is provided which has an opening near the insertion side of the core window 2 and sends an air flow in the direction of the core window 2. The base 13 is also provided with a nozzle 8 having an opening inside the groove 40 and sending airflow in the direction of the groove 40. Nozzle 8 and nozzle 7 are
Each is connected by a joint 11, 11' (not shown) to a source of compressed air (not shown).

FIG. 4 shows a c-c' field view of FIG. 1.

Each pair of rollers is provided so that its rotational axis is perpendicular to the plane formed by the annular guide 6, and the portions of the outer peripheries of the pair of rollers that contact each other are located within the orbit of the annular guide 6.

The rotating shaft 9 of the roller n is rotatably supported with respect to the base 13 by a bearing 18, is rotatably supported with respect to the base 13, and is connected to a motor 35 provided on the base 13 by a coupling 36. . Further, the roller base is rotatably supported by a shaft 32 fixed to a bracket 31 by a bearing. The bracket 31 is swingably supported on the base 13 by a pin, and by moving a joint 52 provided on the bracket 31 forward and backward using a pneumatic cylinder (not shown), the roller holder is pressed against the roller n. An annular guide 6 as shown by the dashed line in the figure
The pin 34 can be used as a fulcrum to move to a position that deviates from the plane 53 formed by the pin 34. The other three pairs of rollers have a similar configuration. In addition, roller pairs 21, 21' to 24
・U' is controlled to rotate at the same circumferential speed.

Now, with reference to FIGS. 5 to 9, Volume 1 method of this embodiment is shown. Further, FIG. 10 shows the time chart. The winding method will be explained below.

The tip 15' of the wire 15 is fed by the rollers 22 and 22' from the state shown in FIG.
When the line guide 6 is pushed into the line guide 6 by
Proceed while being guided by and reach Laura%go.

Furthermore, when the detector 93 detects that the tip end 15' of the wire 15 has reached the roller 23-23', the roller 22' is retracted, and the roller 2L' is returned from the retracted state.
Press it against the roller 21. The tip end 15' of the wire 15 is sent by the roller 23.0', is pushed into the wire guide 6 by the air flow from the nozzle 8, advances while being guided by the wire guide 6, and passes through the roller 24. 24' and the state shown in FIG. 6 is reached. At this time, since the intermediate portion 1de of the wire 15 is sent by the rollers 22, 22' and the rollers 23-23', it enters the slit 10 side from the wire guide 6 against the air flow from the nozzle 8.

Here, rollers 21' and 22' indicated by dashed lines
, 23', and 24' indicate that they are in a retracted position away from the plane formed by the groove 40. Further, the roller (9) indicated by a dashed line indicates a state in which the roller 3q is retracted.

(Similarly below) In the state shown in FIG.
When the detector 94 detects that the roller 2' has reached the roller W, the rollers 2' and 2' are retracted, and the rollers 2' and 2' are returned from the retracted state and pressed against the roller 22, and the roller 3q is roughly moved from the retracted state. Return it and press it against the roller 30.

It! ! The tip 15' of the nozzle 15 is sent by the roller U.
While being pushed in, it advances while being guided by the line guide 6 and reaches the rollers 21 and 21', resulting in the state shown in FIG. At this time, the intermediate portion 15'' of the line 15 is connected to the roller pair 30.
- Line 1 already wound to be sent to 30'! / And in a state where tension is applied to the wire 1 between the core winding part 3 and the roller pair 30, 30', the wire clamping part of the roller pair 30, 30' prevents the rotation of the roller 30 from the core winding part 3. It moves in the direction of the intersection 99 of the perpendicular line drawn to the axis and the rotation axis of the roller 30.

Furthermore, in the state shown in Fig. 7, ? $15 tip 15
When the detector 91 detects that the rollers 21 and 21' have reached the rollers 21 and 21', the rollers 21 and 21' are retracted, and the rollers d are returned from the retracted state and pressed against the rollers n. The tip end 15' of the wire 15 is sent by rollers 21 and 21', is pushed into the wire guide 6 by the air flow from the nozzle 8, and advances to the upper part of the core window 2 while being guided by the wire guide 6. , the state shown in FIG. 8 is reached. At this time, since the intermediate portion 15'' of the wire 15 is sent to the roller pair 30 and 30', it is pulled in the perpendicular direction from the core winding portion 3 to the rotation axis of the roller 30, and the already wound wire 15'' And tension is applied to 915M between the core winding portion 3 and the roller pair 30, 30'.

Furthermore, from the state shown in FIG.
As shown in the figure, since the already wound wire 15'' is pulled by the roller pair 30, 30', the core window 2 is wide and the air flow from the nozzle 7 is turbulent. Since the wire is pushed back toward the slider 98 side of the core 1 due to the unsteady force applied by the wire 70, the probability of hitting the already wound wire 157F/ is low, and the wire is transported while being photographed more precisely at high speed. Even if the wire hits the side wall 4 of the core 1 or the already wound wire 15'', it is easily unlatched, so it can pass through the core window 2 reliably.

The tip 15' of the wire 15 that has passed through the core window 2 is connected to the roller 2.
1 and 21', and is pushed into the line guide 6 by the air flow from the nozzle 8, and advances while being guided by the line guide 6 until it reaches the rollers 22 and 22'', as shown in FIG. Return to the state shown in .

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

Thus, according to the present invention, when the wire tip passes through the core window, the middle part of the wire following the already wound wire is pulled in a direction that does not interfere with the wire that has passed through the core window. By applying tension to the wire, it is possible to prevent the already wound wire from loosening and blocking the core window, so that the tip of the wire can be highly reliably passed through the core window, making it possible to wind the wire with high reliability.

〔Effect of the invention〕

According to the present invention, when the wire tip is passed through the core window, it is possible to minimize the blocking of the core window by the already wound wire, thereby making it possible to wind the wire with high reliability.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing one embodiment of a winding device using the present invention, FIG. 2 is a sectional view taken along line A-A' in FIG. 1, and FIG. 3 is a Kota view of section B in FIG. Fig. 4 is a c-c' sectional view of Fig. 1, Figs. 5 to 9 are principle operation diagrams showing the winding method of Fig. 1, and Fig. 10 shows the relationship between roller operation and wire tip position. The time chart, FIG. 11 is an external perspective view showing an example of a VTR core, and the twelfth factor is an external perspective view showing an example of a magnetic disk core. 6...Line guide 15...i
,,-ゝ,30・3σ...Laura's agent Patent attorney Katsuo Ogawa- J 1 Mouth 12 Figure $ 3 Figure 15' Father-in-law 4- (2) Death 5 Kuchibi et al Figure Yamawa Figure 8 ■ Hu'? Ii Atsushi)

Claims (1)

[Claims] 1. Toroidal winding, in which one end of a wire fixed near the core is inserted into the core window of a toroidal core, and the other end of the wire is wound by repeating the operation of pulling the inserted end of the wire back to the position before insertion. In a wire device, a tensioning device comprising a pair of rollers that are rotatably supported and in contact with each other on a plane formed by the wire transfer path inside the wire transfer path, and a means for rotationally driving one or both of the roller pairs. A toroidal winding device characterized by having a mechanism.