JPS6358813A - Winding equipment of toroidal type core - Google Patents

Abstract

PURPOSE:To enable both side winding with a simple mechanism and to improve reliability and winding speed by rotating the mechanism which holds a core in a plane perpendicular to the transfer route of a wire around the center of the window of the core. CONSTITUTION:This equipment consists of a unit which supports a core 2 which can be moved against a base 10, a core holding unit 50 made of a core reverser 5 which rotates around the center of a core window 3 and a winding unit 7 which winds a wire 1 around the core 2. A notch 13 is provided in part of a circular wire guide 11 and the core 2 is so installed that the notch of the wire guide 11 is positioned on both the sides of the core window 3. Rollers 21-24 are so provided on the transfer route of the core window 3 that the rotation axes of the rollers are perpendicular to the plane made by the wire guide 11 and that the contact point of each pair of the rollers is positioned within the wire guide 11. This enables simplifying the handling mechanism of the wire and improving reliability and winding speed since winding can be done on both sides of the minute core window.

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 winding device for a toroidal core.
The present invention relates to a winding device suitable for performing toroidal winding on a head that requires winding on both sides of a fine core window, such as a TR magnetic head.

[Conventional technology]

A device for winding wires on both sides of a core window for a VTR magnetic head is described in, for example, Japanese Patent Laid-Open No. 59-201406. In this device, one end of the wire is gripped by a gripper and passed through a core window, then pulled out and rotated by another gripper, and passed through the core window again to wind it on one side. Then, the wire is wound on both sides of the core window by holding the other end of the wire and repeating the same operation to wind the wire on the other side of the core window.

[Problem that the invention seeks to solve]

However, in the above-mentioned conventional device, the mechanism is complicated because the gripper repeats many operations such as gripping and releasing the winding, and there is a problem that the winding speed is slow.

An object of the present invention is to provide a toroidal core winding device that can perform winding on both sides with a simple mechanism, has high reliability, and has a high winding speed.

[Means for solving problems]

The above object is achieved by rotating the mechanism holding the core about the window of the core in a plane perpendicular to the line transport path.

[Effect]

The winding device configured as described above is operated as follows.

Let them make it.

First, the core to be wound is set in the holding section and positioned at a predetermined location relative to the wire transfer path.

In this state, the wire is sent and wound around the core a predetermined number of times. The holding portion of the core is then inverted by rotating it about the core window in a plane perpendicular to the transport path of the wire. After reversing, the wire can be wound on both sides of the core by winding the wire a predetermined number of times in the same manner as above.

〔Example〕

FIG. 16 is an external view showing the core of a magnetic head used in a VTR. The core 2 is a thin plate made of ferrite with a thickness of about 0.4 parts and a size of about 2 to 3 square meters in length and width. 0.3 m x O near the tape sliding surface 2C of this core 2
, 3 m long winding window 3 (hereinafter referred to as core window) is formed, and windings i4L, 4 on both sides of this core window 6 are formed.
Coating H with a core wire diameter of about 0.05m '1! Line 1 (hereinafter,
wire) is wrapped around it. The number of turns of this wire 1 varies depending on the product, but it is usually about 5 to 10 turns on both the left and right sides, and the winding specifications are such that one wire is wound on the left and right in a continuous manner as shown in Figure 14. Hereinafter, one embodiment of the winding device and the winding method according to the present invention will be explained with reference to FIGS. 1 to 12. FIG. 1 shows the entire winding device of this embodiment. 01 which is an external perspective view showing the configuration
As shown in the figure, this device consists of a core holding part that supports a core 2 movably in three directions of XYZ with respect to a base 10, and a core reversing part 5 that rotates the core 2 around a core window 3. It is composed of a unit 50 and a winding section 7 for winding the wire 1 around the core 2.

A circular groove 11A is provided on the pace 10, and a circular line guide 11 is constituted by this groove 11A and a cover 12 that covers the groove 11A. A notch 13 is provided in a part of the line guide 11, and the core 2 is arranged so that the line guide 11 at the cutout part of the notch 13 is located on both sides of the core window 3. A roller 21.2'+ is placed on the line type input side of the core window 3 of the line guide 11, rollers 22, 22' are placed on the line exit side, and a roller 2 is placed in the middle of the circular orbit.
3, 23' and tigers 24, 24' are provided so that their rotational axes are perpendicular to the plane formed by the line guide 11, and the contact portions of each pair of rollers are located within the line guide 11. . Further, a detector 8 is provided near the core 2 to detect the passage of @1. Further, a movable guide 40 is provided on the wire entry side of the core 2 by cutting out a part of the base 10.

FIG. 2 shows the AA cross section of FIG. 1. The flat surface 14 formed inside the circular groove 11A provided in the pace 10 is lowered by a length ε slightly larger than the diameter of the wire 1 with respect to the flat surface 15 formed on the outside. In addition, the flat surface 14 of the groove 11A
The side corners 14A are rounded.

Furthermore, this groove 11A1 and 147ji: covered with the cover 12, the part formed by 1J11A and the cover 12 is called the line guide 11, and the part formed by the gap between the plane 14 and the cover 12 is called the slit 16.

A rotating shaft 30 of the roller 23 is rotatably supported with respect to the pace 10 by a bearing 31, and is connected to a motor 32 provided on the base 10 by a coupling 33.

The roller 23' is rotatably supported by a shaft 35 fixed to a swing arm 34 by a bearing 36.
4 is swingably supported on the base 10 by a pin 37,
It is connected to a pneumatic cylinder 39 by a pin 58 provided on the swing arm 34. By moving the pneumatic cylinder 39 forward and backward, the roller 2g can be moved from a state where it is pressed against the roller 23 to a position off the plane 14 as shown by a dashed line in the figure, using the pin 37 as a fulcrum. The other three pairs of rollers have a similar configuration. Further, the roller pairs 21.21 to 24.24' are controlled to rotate at the same circumferential speed.

FIG. 3 shows part B- of the movable shadow line guide 40 shown in FIG.
It is a sectional view of B. A groove 41 is formed in the movable shadow line guide 40, and 1!11d of the groove 41 matches the end of the line guide 11 on the roller 21.21' side, and the other end matches the core window. It is located in Furthermore, the movable shadow line guide 40 has a pneumatic cylinder 4 attached to the pace 10.
The shaft 42 of No. 3 is press-fitted. Pneumatic cylinder 43
When the movable shadow line guide 40 is lifted up via the shaft 42, it hits the cover 12 and the groove 41 is covered by the cover 12, forming a completely closed guide. Further, when the movable knitting guide 40 is pulled down by the pneumatic cylinder 43, the movable knitting guide 40 separates from the cover 12, creating a gap comparable to that of the slit 16.

Next, details of the core holding section will be explained with reference to FIG.

FIG. 4 shows a cross section taken along line CC in FIG.

Connect the head base port with core 2 attached to the air cylinder 51.
A knob 53 attached to the rod 52 is pressed against the rotating body 54 to fix it. @The rolling body 54 is coupled to a shaft 56 of a motor 55. The center of the shaft 56 of the motor 55 and the center of the core window 3 are arranged in a straight line. When the rotating body 54 is rotated by the motor 55, the core 2 is rotated by the window 3 of the core 2.
″f: Rotates around the center. Therefore, the rotating body 54
After 800 rotations, it comes to the position indicated by the chain double-dashed line.

Using the winding device having the above configuration, winding of a magnetic head for a VTR is performed as follows.

Winding can be roughly divided into three steps.

That is, (1) one side of the core 2 is wound in a state as shown by the solid line in FIG.

(2) Next, the motor 55 of the core holding section 6 is operated to rotate the core 2 by 180 degrees around the core window 3. After the rotation, the state will be as shown by the two-dot chain line in FIG.

(3) At position (2), as in (1), of core 2,
(1) and y pair of wires.

Here, each step will be explained in detail.

First, the winding method in step (1) in this embodiment will be shown with reference to FIGS. 5 to 9. Moreover, the time chart is shown in FIG.

FIG. 5 shows the state in the middle of winding. The tip end 1A of the wire 1 is sandwiched between rollers 25 and 25', and the intermediate portion 1B of the wire 1 is located within the slit 16 to form a wire ring containing the winding portion 4 of the core 2 inside. ing.

The roller 21' is in a retracted state. Also, at this time, the movable shadow kite 40 is in a pulled down state. - Are the rollers and the movable forming guide 40 shown in dotted lines retracted or lowered to a position deviated from the plane 14 shown in FIG. 2? show.

As shown in FIG. 6, from the state shown in FIG.
is fed by the blind roller 23.23 and guided by the line guide 11 until it reaches the roller 24.24.

On the other hand, the wire ring formed by the intermediate i1B of the wire 1 is narrowed toward the winding portion 4 of the core 2. During this time, the movable line guide 40 is in the lowered position, and as explained in FIG. 3, there is a gap between it and the cover 12 which is about the same as the slit 16, so it does not interfere with narrowing down.

As shown in FIG. 7, when the detector 8 detects the intermediate portion 1B of the line 1 in the state shown in FIG. 6, the roller 22 is retracted, and the roller 21' is returned from the retracted state and pressed against the roller 21.

The intermediate part 1B of the wire 1 enters the slit 16 from the wire guide 11 because it is fed by the rollers 23, 23'.

By further rotating roller 23.23'Y, line 1
Tension is applied to the intermediate portion 1B of the wire 1B and the wire 1C already wound around the core 2. In this state, the L-roller 22' is returned from the retracted state and pressed against the roller 22. At this time, the movable linear guide 40
is lifted to form a guide with a closed periphery on the core insertion side of the core window 3 as shown in FIG. Tip 1 of wire 1
During this time, the person is sent by rollers 24, 24' and rollers 21
．． 21' and further reaches the movable forming guide 40.

Next, as shown in FIG. 8, the roller 2i is retracted from the state shown in FIG. The tip 1A of the wire 1 is the roller 21.2
1 and is completely guided by the movable shadow line guide 40 to reach the line type entry side of the core window 3.

At this time, since the intermediate portion 1B of the wire 1 is fed by the roller 21.21', it enters the slit 16 side from the wire guide 11. Furthermore, as shown in FIG. The tip gIA of the wire 1 that has been fed by and exits the notch 13 is the wire 1C that has already been wound around the winding portion 4 of the core 2.
Since tension is applied by the rollers 23 and 23', there is no interference with this line 1C, and the middle part 1 of the
After exiting the core window 3, B is pulled away from the mound guide 11 and into the sleeve 16 by the roller 23.23'', so it does not interfere with il B and passes through the core window 3 and is pulled into the line guide. We will proceed within 11.

The tip 1A of Ill that has passed through the core window 3 is moved to the roller 21.
．． As shown in FIG. 5, the roller 23' is retracted, the roller 24' is returned, and the movable shadow line guide 40 is pulled down in the state shown in FIG. 8, as shown in FIG. Make it. The intermediate portion 1B of the wire 1 is fed by rollers 21, 21', and is gradually narrowed down from a large wire ring including the winding portion 4 of the core 2 and the roller 21' to a small wire ring. At this point, roller 21'
is retracted, and the roller 23' is returned to its original position. On the other hand, the tip end 1A of the wire 1 is sent by rollers 22 and 22', guided by the wire guide 11, and reaches rollers 23 and 25.

This completes the winding operation for one turn. Thereafter, the same operation is repeated a predetermined number of times to perform winding, and step (1) is completed.

FIG. 12(α) shows the state at the end of step (1), in which the winding portion 4R has been wound.

Next, step (2) will be explained. Step (1)
After this is completed, the rotating body 54 holding the core 2 is reversed by operating the motor 55. By reversing, the position of core 2 is changed from Fig. 12 (α) to Fig. 12 body)
changes to the state of When inverting, the center of the core window 3 is rotated as the center of rotation 57, so the wire 1 is neither stretched nor loosened, so I! 1 will never disconnect.

Finally, step (3) will be explained. Step (2
) is completed, the winding i section 4L is wound. The procedure is the same as step (1). After completing this step, winding will be performed as shown in FIG. 12(0).

By operating the apparatus in the order of steps (1), (2), and (3) above, windings can be formed on both sides of the core window, like a magnetic head for a VTR.

In this embodiment, the core is reversed clockwise when viewed from the direction of travel of the line, but the invention is not limited to this.

Further, in this embodiment, the rotating body 54 is initially positioned in the state shown by the solid line in FIG. 4, but it is not limited thereto, and may be started from the state shown at the two points IalIiI in the same figure. Furthermore, the inversion angle is not limited to 180°, and may be determined depending on the shape of the core.

In addition, in this embodiment, as a line transfer method, the fo
-Although we used the method of sending via RA, it is not limited to
For example, how to grab a line with a gripper and transfer it.
The transport method may be one that generates heat.

〔Effect of the invention〕

According to the present invention, the VT
Since the wire can be wound on both sides of a fine core window such as in an R magnetic head, the wire handling mechanism can be simplified and a winding device with high reliability and high winding speed can be realized. There is 0

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of a winding device according to the present invention. 2 is a cross-sectional view taken along line A-A in Figure 1, Figure 3 is a cross-sectional view taken along line B-B in Figure 1, and Figure 4 is taken along line C-C in Figure 1. 5 to 9 are explanatory diagrams showing the principle of the winding method in the present invention, FIG. 10 is a time chart showing the timing of the winding operation in the present invention, and FIG. 11 is a wire guide. 12 is an explanatory diagram 1 and 13 showing the principle of reversal operation.
14 and 14 are diagrams showing target products of the winding device according to the present invention. 1... wire, 2... core, 3...
window, 6... core holding mechanism, 11...
- Line guide, 21-24...roller. ,,/-9),

Claims (1)

[Claims] 1. In a winding device that repeatedly winds a wire around a core provided on a wire transfer path, a mechanism for holding the core can be rotated around a window of the core in a plane perpendicular to the transfer path. A toroidal core winding device characterized by supporting.