JPS6278810A - Winding device for toroidal core - Google Patents

Abstract

PURPOSE:To reliably wind a wire at high speed on the core placed at a notched part by using an annular guide whose whole length of the inner circumferential surface is opened through the intermediary of a slit and which has a notched part at a section, and a plurality of feeding rollers. CONSTITUTION:An annular guide 6, the whole length of the inner circumference of which is opened, is formed with the annular groove 40 on the upper surface of a base 13 and a cover (not shown in the diagram) through the intermediary of a slit. A notched part 14 to be used to position a core 1 is provided at a part of the guide 6. After a wire 15 of prescribed length has been fed into the guide by passing through a wire feeding groove 16 using feeding rollers 21-24 and 37, the end point of the wire is grasped by a clamp 17, the wire end part is removed from the roller 21, and this condition is maintained. Then, when the rollers 21-24 are rotated, the tip part 15' of the wire 15 makes progress along the guide 6, and passes through the window 2 of the core 1 repeatedly. As the intermediate part 15'' passes the slit and is pushed into the center of the ring-shaped guide, the wire 15 is wound in the prescribed number of turns on the core 1.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a toroidal core winding device.

In particular, it relates to a winding device suitable for winding ultrafine wires such as magnetic head windings in a toroidal shape.
As described in Japanese Patent No. 86926, the wire positioned above the core window is suctioned with a vacuum pipe provided below the core window, the wire is passed through the core window, and the vacuum pipe is lowered to pull out the wire and the wire is removed from the core window. Toward the entrance provided at the lower part of the core window of the arc-shaped guide provided in the winding direction from the bottom to the top.

Winding was performed by blowing compressed air through nozzles provided on the opposite side of the guide inlet across the inserted wire to send the wire above the core window.

However, this method has a mechanism in which the wire is suctioned and gripped with a vacuum, and then fed under pressure with air, so there is a limit to the reliability and speed of threading the wire.

[Purpose of the invention]

The object of the present invention is to provide a toroidal type wire that can be wound reliably and at high speed by reliably passing the wire tip through the core window of the toroidal type core, and transferring the wire tip to the loose insertion position again, and repeating this process. The purpose of the present invention is to provide a core winding device.

[Summary of the invention]

In order to achieve the above object, the present invention includes: a partially cut-out annular guide; a plurality of pairs of feed rollers having contact points within the annular guide and having axes in a direction parallel to a plane formed by the annular guide; The present invention is characterized in that a core holding unit is provided to hold the core so that the core window is located in the notch of the annular guide.

[Embodiments of the invention]

An embodiment of the winding device according to the present invention is shown in FIGS. 1 to 1 below.
This will be explained with reference to Figure 6.

FIG. 15 shows multiple windings performed by the winding device of the present invention. VT
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 with a thickness of α4 mm,
It is molded to a size of 2 to 3 mm in length and width and 9 degrees. α5mmX (L3m
A window 2 for the m3mm line is formed, and this core window 2
0 Wire 15 with a core diameter of about CLO5mm is attached to the winding part 3 on both sides.
is wrapped around.

The number of turns of this wire 15 varies depending on the product, but it 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 72, and this base 72 is further attached.

It is attached to an upper cylinder (not shown).

FIG. 16 is an external perspective view showing an example of a core used in a magnetic disk or the like wound by the winding device of the present invention. 1' is approximately 0.4 mm thick and 1 to 2 mm in length and width.
The core is made of ferrite and consists of a head part 73 shaped to a certain degree, and a slider part 74 formed to a thickness of about 2 mm, 3 mm in length and width, and 5 mm in width. Head portion 73 of this core 1'
α5mm x CL 5mmn1 window for winding 2'
is formed, and a wire 15 with a core diameter of approximately α05 mm is attached to the winding portion 5′ on the opposite side of the slider portion 74 of this core window 2′.
is wrapped around. The number of turns of this wire 15 varies depending on the product, but is usually about 10 to 50 turns.

FIG. 1 is an external perspective view showing the overall configuration of an embodiment of a winding device according to the present invention.

As shown in FIG. 1, this device includes a core holding unit 5 that supports a core (not shown) movably in XYZ directions with respect to a base 13, a first winding section 81, and a wire supply section 82. . The base 13 is covered by a cover 12.

In Figure 2, the cover 12 in Figure 91 is removed.

It shows the internal structure in which the annular guide 6 and the like are shown.

An annular groove 40 is provided on the upper surface of the base 13, and the annular guide 6 is formed by this groove 40 and the cover 12 shown in FIG. vC1.

A notch 14 is provided in a part of the groove 40 in a direction perpendicular to the groove 40, and the notch 14 is slightly wider than the width of the winding part 3 when the winding is completed on the core 1. The core 1 is arranged above and below the core 2. Pairs of rollers 2L 21', 22.22', 25.25', 24 are provided at two locations in the groove 40 on the wire feeding side of the core 1, on the wire drawing side, and on the opposite side of the core 10.
．． 24' is provided so that the axis of one rotation is parallel to the plane formed by the groove 40, and the points where the pair of rollers touch each other are located within the groove 40.

A supply groove 16 is provided on the opposite side of the core 10 of the rollers 21, 1' in the base 13. In the middle of this wire supply groove 16, a gripper 17 and a cutter 1 are placed in order from the one closest to the core 1.
8. A pair of feed rollers 37°37' are provided.

The gripper 17 is set to grip the wire 15 at the center of the wire supply groove 16, and is configured to grip the wire 15 at the center of the core winding portion 3 within a plane perpendicular to the plane formed by the annular guide 6 including the core winding portion 3 and the gripper 17. The opposite side 180 of the base 130 is rotatably supported.

The cutter 18 is set to cut the wire 15 at the center of the W supply groove 16. Feed roller 37°37' is 1
The roller is provided with a rotating shaft perpendicular to the base surface and a portion where the outer peripheries of both rollers are in contact with each other is located within the wire supply groove 16, and is rotatably supported with respect to the base 13.
The rotation is controlled so that it rotates in the same circumferential direction as the rollers 21.21' to 24.24'.

Further, as shown in FIG. 1, the cover 12 has a supply groove 1
6, the gripper 17, and the rollers 21, 21', and the part between the roller 2L21' and the core winding part 30 (cover (2) that covers 1112' and other parts)
This cover (1) 12'
is movably supported in a position that does not interfere with the gripper 17 when the gripper 17 rotates.

FIG. 3 shows a sectional view taken along line A-A' in FIG. That is, an annular groove 4a is provided on the base 13, and a flat surface 41 formed on the inside of the groove 40 in the base 15 is lowered by a length slightly larger than the diameter of the wire 15 with respect to a flat surface 42 formed on the outside. be. Further, the corners 43 of the groove 40 on the plane 41 side are rounded. Furthermore, this groove 40. Senmen 4
A cover 12 is provided to cover 1 from above. An annular groove 40' is provided on the cover 12 at a position corresponding to the annular groove 40 provided in the base 13. Also groove 40'
The inner corner 43' is rounded. The part formed by the groove 40 and the groove 40' is connected to the annular guide 6 and the flat surface 41.
The gap between the cover 12 and the slit 4
It is called 5.

FIG. 4 is an enlarged view of section B in FIG.

That is, a notch 14 is provided in a part of the annular guide 6 provided on the base 13, so that the gap is slightly wider than the width of the winding part 3 when the winding on the core 1 is completed.

The size of the cross section of the wire feeding portion 50 on the side where the wire 15 is fed out of the annular guide 6 facing the notch portion 14 is as follows.

The size of the cross section of the core window 2 is also small, and the size of the cross section of the wire retirement part 51 on the wire drawing side is larger than the size of the cross section of the core hole 2.

The core 1 is positioned by the core holding unit 5 so that the center of the core window 2 is located almost directly below the center of the wire feeding portion 50 of the annular guide 6.

FIG. 5 shows a cross-sectional view taken along the line C-C' in FIG.

The pair of rollers 25 and 23' are provided so that their rotational axes are parallel to the plane formed by the annular guide 6, and the points at which the outer peripheries of the rollers touch each other are located within the orbit of the annular guide 6.

The rotating shaft 9 of the roller 23 is rotatably supported by a bearing 8 to a block 61 fixed to the base 13, and is connected to a motor 35 provided on the block 61 by a coupling 36. Further, the row 223' is rotatably supported by a bearing 55 on @32 fixed to the bracket 31. The bracket 31 is swingably supported by the block 61 (by the pin 54), and the cylinder 52 provided on the bracket 31 is moved forward and backward by a pneumatic cylinder (not shown), and the roller 23' is rotated. 223 can be moved above the annular guide 6 as shown by the dashed line in the same figure using the pin 34 as a fulcrum.

The other three pairs of rollers have a similar configuration. Furthermore, the speed of each roller is controlled so that it rotates at the same outer circumferential speed.

With the above configuration, the operation of the winding device according to the present invention will be explained.

7 to 9 are explanatory diagrams showing a wire supply method using the present wire winding device. Further, FIG. 10 is a time chart of each component in the line supply process, and FIG. 6 is an explanatory diagram showing the positional relationship between the gripper and the cover.

As shown in FIG. 7, the wire 15 is inserted and fed into the guide fII#16 provided between the rollers 37 and 37', and is passed from the wire feeding groove 16 to the annular guide 6 by the row 257, 37'.
The tip 15' is transferred and fed into the roller 21.2.
1' is reached.

In the state shown in FIG. 7, the row 221 is driven many times by the drive device, so that the tip 1 of the wire 15
5' is transferred between rollers 21, 21', guided by an annular guide 6, passes through core window 2, and reaches rollers 22, 22'. In the same manner, the wire 15 is sent with its tip sequentially sandwiched between the rollers 22, 22' and 23, 23', progresses while being regulated by the annular guide 6, reaches the rollers 24, 24', and moves to the eighth roller.
It will be in the state shown in the figure.

In the state shown in FIG. 8, the length of the wire 15 required for winding, which is determined by the sum of the length to be wound around the core 1, the length of the starting end, and the length of the ending end, passes through the cutter 18 on the winding rollers 21, 2.
1' to 24.24' and 37.37' are stopped to temporarily stop the linear speed, one end of the wire 15 is gripped by the gripper 17, and cut by the cutter 18.

Next, by driving an air cylinder (not shown), the roller 211 is retracted to a position out of the plane of the thyroid guide 6, and then the cover 12' is moved as shown in FIG.
After moving the gripper to a position where it does not interfere with the movement of the gripper 17,
Rotate the gripper 17 and move it to the rear of the core 1 so that the line 15
The portion of the wire which does not pass through the core window 2 is fixed, and the winding starts as shown in FIG.

Next, a winding method using the winding device according to the present invention will be explained. FIGS. 11 to 14 are explanatory diagrams showing a winding method using the present winding device.

The tip end 15' of the wire 15 is fed by rollers 21, 21' from the state shown in FIG.

The rollers 22, 22' are reached and the situation shown in FIG. 12 is reached. At this time, the middle part 15 of the wire 15 whose one end is fixed to the base 15 through the core window 2 is.

Because it is pulled by the rollers 23 and 23', the row 222
．． 22' and is squeezed toward the center of the annular guide 6.

If all the rollers continue to rotate further, the tip 1 of the wire 15
5' is fed by rollers 22 and 22' from the state shown in FIG.
Low: reaches 11F25.25' and becomes the state shown in FIG. At this time, Ii! 15 is pulled by the rollers 24, 24'iC.

It comes off the rollers 25 and 23' and is narrowed toward the center of the annular guide O.

When all the rollers continue to rotate further, the tip end 15' of 1i115 changes from the state shown in FIG.
', it advances while being guided by the annular guide 6, reaches the rollers 24, 24', and is in the state shown in FIG. At this time, the intermediate portion 15'' of the line 15 is
Because it is pulled by 1,21'.

It comes off the rollers 24, 24' and is narrowed toward the center of the annular guide 6.

If all the rollers continue to rotate further, the tip 1 of the wire 15
5' is sent by the row 224° 24' from the state shown in FIG.
The state returns to the state shown in FIG. At this time, the middle part 15 of the wire 15 is pulled by the row 222.22', so
It separates from the row 221, 21', is drawn toward the center of the annular guide 6, and is wound around the winding portion 3 of the core 1.

This completes one turn of winding. Thereafter, similar operations are repeated a predetermined number of times to complete winding.

After winding a predetermined number of times, rows 221', 22'.

23' and 24' are retracted, the gripper 17 is released,
The core 1 is discharged to obtain a core 1 with finished winding.

Note that in this embodiment, the core 1 is supported at a fixed position while winding is performed, but the core 1 may be wound while being moved by a fixed amount or an arbitrary amount per turn in a direction orthogonal to the winding direction. It's okay. This method makes it possible to wind the wire evenly within the core window 2.

Furthermore, the variation in the position of the core window 2 or the state of the window being blocked by the winding wire is measured using a television camera, etc., the optimal core window position is determined, and based on this information, the position of the core 1 is changed and the winding may be done.

〔Effect of the invention〕

□As detailed above, according to the present invention, the wire is fed by multiple pairs of rollers, and the course is restricted by the guide, so that the wire can be reliably drawn repeatedly and in continuous operation.
High-speed winding is possible because the wire can be threaded and drawn, and the structure is simple, making it possible to reduce the size and cost, making it highly reliable. It becomes possible to realize a high-speed and compact automatic winding device.

[Brief explanation of drawings]

Fig. 1 is an external perspective view showing the configuration of an embodiment of the winding device according to the present invention, and Fig. 2 is a plan view showing the external appearance of the winding device shown in Fig. 1 with the cover removed. @Figure 3 is a cross-sectional view showing the A-A' cross section in Figure 1, Figure 4 is an enlarged view of section B in Figure 2, Figure 5 is a cross-sectional view showing the entire CC' cross section in Figure 2, Figure 6 is an explanatory diagram showing the positional relationship between the gripper, core, and cover, Figures 7 to 9 are explanatory diagrams showing the wire supply method using this winding device, and Figure 10 is a time diagram of each component in the wire supply kingship. Charts, FIGS. 11 to 14 are explanatory diagrams showing the winding method using the present winding device, FIG. 15 is an external perspective view showing an example of a VTR core, and FIG.
The figure is an external perspective view showing an example of a magnetic disk core. DESCRIPTION OF SYMBOLS 1... Core, 5... Core holding unit, 6... Annular guide, 15... Wire, 2L 21', 22.2
2', 25.25'. 24.24'...roller, 31...bracket+
35...Motor.

Claims (1)

[Claims] an annular guide having a notch in a part; a plurality of pairs of feed rollers having contact points in the annular guide and rotating shafts in a direction parallel to a plane formed by the annular guide; and a core winding in the notch. 1. A winding device for a toroidal core, comprising: a holding mechanism that holds the core so that the core is in the same position; and a drive mechanism that rotationally drives the feed roller.