JPS6231106A - Winding equipment for toroidal type core - Google Patents

Abstract

PURPOSE:To lead a wire repeatedly and surely to insert and lead a wire with a continuous operation by controlling the course of the wire with a guide and sending the wire by plural pairs of rollers. CONSTITUTION:A wire 15 is sent by rollers 21, 21', led by a wing guide 6, passed through a core window 2, reaches rollers 22, 22', the roller 21, is retreated if detected by a detector 92 and a roller 24 is pressed against a roller 24'. The operation proceeds sequentially in this way and if a detector 91 detects the arrival of the wire 15 at the rollers 21, 21', the roller 24' is retreated, a roller 23 is pressed against a roller 23' and the original state is returned. One turn of winding is completed with the above-mentioned operation, the operation is repeated required number of times and the winding is carried out repeatedly. When the winding is done required number of times, all the inside rollers 21, 22', 24' are retreated, a gripper is released and a core is discharged.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a winding device for a toroidal core, and in particular, a winding device suitable for winding ultrafine wires such as magnetic head windings in a toroidal shape. Regarding.

r) The conventional toroidal core winding device is disclosed in Japanese Patent Application Laid-open No. 513-
As described in Japanese Patent No. 186926, the wire positioned below the core window is suctioned by a vacuum pipe provided below the core window, the wire is passed through the core window, the vacuum pipe is lowered, the wire is pulled out, and the wire is pulled out through the core window. Pressure is applied from nozzle 9 provided on the opposite side of the guide inlet across the inserted wire toward the inlet 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 the wire by blowing air onto the wire and sending it above the core window.

It was something to do.

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 are limitations in terms of reliability of wire threading and speedup.

[Purpose of the invention]

An object of the present invention is to wind a toroidal core with high reliability and high speed by reliably passing the wire through the core window of the toroidal core, transporting the wire tip to the wire insertion position again, and repeating this process. Our goal is to provide line equipment.

[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 perpendicular 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 will be described below with reference to FIGS. 1 to 18.

FIG. 17 shows a VT wire wound by the winding device of 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 with a thickness Q of about 4rrLm, and is molded to a size of about 2 to 5rrLm in length and width. a, srn near the trace surface 71 of this core 1
A winding window 2 of approximately m x a, smtn is formed, and the winding portions 3 on both sides of this core window 2 have core wire diameters o, o.
A wire 15 of about smm is wound around. The number of turns of this wire 15 varies depending on the product, but usually 5 to 1 on both the left and right sides.
It is about 5 volumes.

This toroidal core 1 is attached to the tip of the core base 72, and this base 7''2- is further attached to the tip of the core base 72.
It is attached to an upper cylinder (not shown).

FIG. 18 is an external perspective view showing an example of a core used in a magnetic disk or the like wound in a winding manner according to the present invention. 1 is a ferrite core made of a head part 73 formed to have a thickness Q of about 4 mm and a length and width of about 1 to 2 mm, and a slider part 74 formed to have a thickness of 2rILrn and a length and width of about 3 to 5 mm. A winding window 2' of about 0.5 mm x G and 5 nm is formed in the head part 73 of this core 1', and the slider part 7 of this core window 2'
A wire 15 having a core wire diameter o, approximately osmm, is wound around the winding portion 51 on the opposite side of the wire 4. The number of turns of this wire 15 varies depending on the product, but is usually about 10 to 50 turns.

FIG. 1 shows an embodiment of a winding device according to the present invention.

FIG. 2 is an external perspective view showing the overall configuration.

This device includes a core holding unit 5 that supports a core 1 movably in the XYZ directions with respect to a base 13, an annular guide 6 composed of a base 15 and a cover 12, and four pairs of rollers 21.
．． It is composed of a winding section 81 consisting of wires 21J to 24.24' and a wire supply section 82.

FIG. 2 shows the internal structure with the cover 12 in FIG. 1 removed and the annular guide 6 etc. shown. base 1
An annular groove 40 is provided on the upper surface of the guide 5, and the annular guide 6 is formed by this groove 40 and the cover 12&C shown in FIG. Notches 14 are provided in the groove 40 in a direction perpendicular to the groove 40 and are slightly wider than the width of the winding part 50 when winding is completed on the core 1. Core 1 is placed so that it is located at . A pair of rollers 21.2 is provided at two locations in the groove 40 on the wire feeding side of the core 1, on the wire feeding side, and on the opposite side of the core 1.
1', 22.22', 25.25', 24.24
1, the rotating shaft is a groove.

The grooves 40 are perpendicular to the plane formed by the grooves 40, and the points where the pair of rollers touch each other are located within the grooves 40.

A wire feed groove 16 is provided in the base 15 in a common tangential direction of the rollers 21, 21'. In the middle of this wire supply groove 16, a gripper 17, a cutter 18.
A pair of feed rollers 57, 57' are provided.

The gripper 17 can be opened and closed on the gripper body 17#.

It has claws 17'l, 17"' which are supported and configured to grip the wire 15 at the center of the wire supply groove 16, and which are perpendicular to the plane formed by the annular guide 6 including the core winding portion 5 and the gripper 17. The cover 12 shown in FIG. 1 does not interfere with the gripper 17 when the glyph 1 pa 17 rotates. position.

movably supported.

The cutter 1B has blades 1B, . The feed rollers 57, 57' are rotatably supported with respect to the base 15, and are provided such that their rotational axes are perpendicular to the base surface and the portions where the outer peripheries of both rollers touch each other are located within the line supply groove 16. and rollers "21', 21' to 24,2
The rotation is controlled so that it rotates in the same direction as 4'. Further, as shown in FIG. 1, the cover 12 has a wire supply groove 1
A cover +1112' that covers the portion between the gripper 17 and the rollers 21, 21' of No.6 and a portion between the rollers 21, 21' and the core winding portion +1112' and a cover +2 that covers the corresponding portion
1121'. Furthermore, line position detectors 91, 92, 95, and 94 are provided at the exit of each roller pair.

FIG. 5 shows a sectional view taken along line A-A in FIG. That is, an annular groove 40 is provided on the base 15, and a flat surface 41 formed on the inside of the wire 40 in the base 15 is lowered relative to the outside 42 by a length slightly larger than the diameter of the wire 15. Further, corners 45 of the groove 40 on the plane 41 side are rounded. Further, a cover 12 is provided to cover the groove 40 and the flat surface 41 from above. This groove 40 and cover 12
The portion constituted by the annular guide 6 is referred to as the annular guide 6, and the portion constituted by the gap between the plane 41 and the cover 12Q is referred to as the slit 45. Further, a line position detector 92 is provided at the bottom of the annular guide 6 to detect the passage of the line.

FIG. 4 shows a portion near the core of the B-B# sectional view shown in FIG. 2.

That is, a part of the annular guide 6 provided on the base 15 is provided with a notch 14 having a spacing slightly wider than the width of the winding part 50 when the winding on the core 1 is completed. .

The winding of the wire 15 of the annular guide 6 facing the notch 14.

The size of the cross section of the wire feeding part 50 on the feeding side is the same as that of the core window 2.
The cross-sectional size of the wire connecting portion 51 on the wire drawing side is larger than the cross-sectional size of the core window 2. - The core 1 is positioned by the core holding unit 5 so that the center of the core window 2 is almost directly below the center of the wire feeding portion 50 of the annular guide 6.

FIG. 5 shows a C-CI sectional view in FIG. 2.

The pair of rollers 25, 25' are provided such that their rotational axes are perpendicular 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 with respect to the base 15, and a modified motor 5 is mounted on the base 15.
5 by a coupling 56. Also, roller 25? is rotatably supported by a bearing 55 on a shaft 32 fixed to a bracket 51. Bracket 5
1 is swingably supported on a base 15 by a pin 54, and by moving a joint 52 provided on a bracket 51 forward and backward with a pneumatic cylinder (not shown), the roller 2
5F can be moved from a state in which it is pressed against the roller 25 to a position where it deviates from the plane 55 formed by the annular guide 6 as shown by the dashed line in the same figure, using the bin 54 as a fulcrum. The other five pairs of rollers have a similar configuration. .

Further, each roller is speed-controlled by a button so that it rotates at the same peripheral speed.

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

7 to 10 are explanatory diagrams showing a wire supply method using the present wire winding device. Further, FIG. 11 is a time chart of each component in the line supply process, and FIG. 6 is a clear view 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 groove 16 provided between the rollers 57, 57',
．． 57', the wire is transferred and supplied from the °C wire supply groove 16' into the annular guide 6, and its tip 15' is connected to the roller 21, 21'.
reach.

In the state shown in FIG. 7, the roller 21. is rotationally driven clockwise (in the direction of the arrow) by the drive device, so that the tip end 15' of the wire 15 is rotated by the roller 21.21'.
It is transferred while being sandwiched between the rollers 22 .
22' is reached. Similarly, the line 15 is the roller 22.2.
2' and 25.25', the tips are successively sandwiched between them, and they advance while being regulated by the annular guide 6.
4.24' is reached, resulting in the state shown in FIG. In the state shown in FIG. 8, if the wire 15 of the length required for winding, which is determined by the sum of the length to be wound around the core 1, the starting end length, and the ending end length, passes through the cutter 18, the roller 21.2f '〜24
．． 24' and 57.57' are stopped to temporarily stop the line feeding, one end of the line 15 is gripped by the gripper 17, and the cutter 1 is
Cut at 8. Next, by driving an air cylinder (not shown), the roller 21' is moved back to a position out of the plane formed by the annular guide 6.

After moving the trap cover 12- to a position where it does not interfere with the movement of the gripper 17 as shown in FIG. The parts that have not passed are fixed, and the state shown in FIG. 9 is obtained.

In the state shown in FIG. 9, the air cylinder (not shown) is driven to bring the roller 21' into pressure contact with the roller 21 again. In this state, all the rollers are rotated again, and the first winding wire is wound around the core 1.

The rollers 22' and 25' are sequentially retracted as the position increases.

The portion of the wire 15 passing through the core 1 is connected to the rollers 25, 25/
As the wire 15 is fed, it is engraved toward the center of the annular guide 6.
Reach K. The tip 15' of the wire 15 is the roller 21°21'
When the detector 91 confirms that K has been inserted and is now being transferred, the mouth is opened.

- The roller 24' is retracted, and the rollers 22' and 25' are brought into pressure contact with the rollers 22 and 25 again, so that the winding starts as shown in FIG.

Next, a winding method using the winding device according to the present invention will be explained. 12 to 15 are explanatory diagrams showing a winding method using the present winding device. Moreover, FIG. 16 shows a time chart of each component in the winding process. From the state shown in FIG. 12, the wire 15 is fed by the rollers 21, 21'', advances while being guided by the annular guide 6, passes through the core window 2, reaches the rollers 22, 22', and reaches the state shown in FIG. What?

Ru.

Further, in the state shown in FIG. 15, the detector 92 detects that the line 15 has reached the roller 22, 22'.

Once released, remove roller 21'! Suse, roller 24 again
' is pressed against the roller 24. Line 15 is roller 22°22
' and guided by an annular guide 6.

The robot advances while moving until it reaches roller 25.25-. Furthermore, the detector 9 detects that the line 15 has reached the roller 25.25'.
When the roller 22' is detected, the roller 22' is retracted and the roller 22' is retracted.
21' is pressed against the roller 21. Line 15 is roller 2S2
5', it advances while being guided by the annular guide 6, reaches the rollers 24 and 241, and is in the state shown in FIG.

Further, when the detection a94 detects that the line 15 has reached the roller 24, 24' in the state shown in FIG. 14, the roller 25/ is retracted and the roller 22# is pressed against the roller 22. The wire 15 is fed by the rollers 24, 24' and guided by the annular guide 6 until it reaches the rollers 21, 21' and is in the position shown in FIG.

Further, when the detector 91 detects that the line 15 has reached the rollers 21 and 21', the roller 24' is retracted and the roller 25' is brought into pressure contact with the roller 25, returning to the state shown in FIG.

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

After winding a predetermined number of times, all inner rollers 2122'
, 25' and 24' are retracted, the gripper 17 is released, the core 1 is discharged, and the core 1 with the winding completed is obtained.

In addition, in this embodiment, the driving and stopping of the rollers 21, 22, 25, 24, and the rollers 2-1', 22〆, 25', 2
4' retraction operation, line position detector? 1,92,95
．． This is done in synchronization with the 94 signal, but without using a detector.

A similar operation may be performed by retracting and pressing the roller in accordance with a sequence set based on the number of rotations of the damping roller or time.

Further, in this embodiment, the core 1 is supported at a fixed position and the winding is performed;

The wires may be wound while being moved by a fixed amount or an arbitrary amount per turn in a direction perpendicular to the direction. This method allows the wire to be wound evenly within the core window 2.

It becomes possible. Furthermore, the variation in the position of the core window 2 or the state of the window's base due to the windings is measured with a TV camera, etc., the optimal core window position is determined, and the position of the core 1 is changed based on this information. Winding may also be performed.

Further, in this embodiment, dedicated motors are used to drive the rollers 21, 22, 25, and 24, and the rotational speeds thereof are controlled to be equal. For example, each roller connected to a pulley and one All the rollers of one motor may be driven simultaneously by a method such as one belt extending over each boot of the motor.

In this embodiment, rollers 211.22', 25', 2
4' is retracted below the base, but it may also be raised above the base.

In this embodiment, the wire supply position is provided in the common tangential direction of the pair of rollers 21211, but it may be any position as long as the wire 15 can be supplied to the annular guide 6.

In this embodiment, a pair of rollers (for example, rollers 21, 21') are used to feed the wire 15, but it is also possible to use a configuration in which one side is a wall surface and the wire is fed by a roller on only one side.

Furthermore, in order to prevent the wire 15 from buckling in the feeding direction within the annular guide 6, it is also possible to provide a roller on the inner or outer wall of the annular guide 6 and use this to transport the wire.

〔Effect of the invention〕

As described in detail above, according to the present invention, lines are sent in multiple pairs of rollers, and the course is fixed by a guide.
The wire can be reliably drawn repeatedly, the wire can be threaded and drawn in continuous operation, so high-speed winding is possible, and it is easy to manufacture, making it possible to downsize and lower the price. Because of the various effects such as

[Brief explanation of the drawing]

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 an external perspective view showing the appearance of the winding device shown in FIG. 1 with the cover removed. Figure 5 is A-AI in Figure 1. 4 is a sectional view showing the cross section taken along line B-B' in FIG. 2, FIG. 5 is a sectional view taken along line C-C' in FIG. 2, and FIG. 6 is a sectional view showing the gripper and core. An explanatory diagram showing the positional relationship of the covers, FIGS. 7 to 10 are explanatory diagrams showing the wire supply method using this winding device, FIG. 11 is a time chart of each component in the wire supply process, and FIGS. Figure 15 is an explanatory diagram showing the winding method using this winding device;
Fig. 16 is a time chart of each component in the winding process, and Fig. 17 is a time chart of each component in the winding process. FIG. 18 is an external perspective view showing an example of a VTR core. FIG. 18 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, 21.21', 22.2
21.25.251.24.24...Roller, 51.
...Bracket, 55...Motor. Figure 1 Figure 2 Figure 3 Figure 5 Figure 7 Figure ¥8 Figure 9 Figure height 11 Figure Bushi: 2゛ + outside 3 ri 12th ward 13 Fig. 14 Fig. 15 Fig. 16 Line supply break time t2 at time t-: End of 1 cycle 3rd period

Claims (1)

[Claims] an annular guide having a notch in a part; a plurality of pairs of feed rollers having contact points within the annular guide and rotation axes perpendicular to a plane formed by the annular guide; and a core winding in the notch. a holding mechanism that holds the core in such a way that the core is in the same position; a moving mechanism that moves a roller of the pair of feed rollers that is disposed inside the annular guide to a position that is out of the plane formed by the annular guide; A toroidal core winding device comprising: a drive mechanism that rotationally drives the feed roller.