JPH07226330A - Rigidity reinforcing method and handling method of wire - Google Patents

Abstract

PURPOSE:To solve a trouble that occurs due La a reliability deterioration in winding operation due to a lack of rigidity in wire when a winding operation carried out, with a very fine wire for obtaining a magnetic head used for a VTR, an HDD or the like is automated. CONSTITUTION:Parallel electric wires 103 higher in rigidity than a single wire are made to serve as a handling part by a three-segment turning single-wire mechanism, and a single electric wire 101 is made to serve as a winding part which is wound on a core. By this setup, a handling part of a wire can be enhanced twice or more in rigidity, and trouble caused by the deformation of a wire can be remarkably lessened, so that a winding machine can be enhanced in reliability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work for handling a wire material such as an electric wire, and is particularly suitable for an extremely fine toroidal winding in a minute hole such as a magnetic head of a VTR or a magnetic disk. The present invention relates to a wire having high rigidity and a method for strengthening the rigidity of the wire.

[0002]

2. Description of the Related Art As a conventional device, Japanese Patent Laid-Open No. 63-58
As described in Japanese Patent No. 812, there is one in which a wire is fed by a roller along an annular guide, and the wire is wound around a toroidal core. Also, as in JP-A-55-153308, a method is known in which manual work is automated as it is, and a wire is wound while passing the wire material in front of and behind the core window by a gripper.

[0003]

In the magnetic head winding, in the above-mentioned prior art, the rigidity of the ultrafine wire is low, and it buckles due to the frictional resistance with the guide surface or contacts the wire already wound around the core window. There is a problem that the operation reliability of the winding is low due to buckling.

[0004]

The above object can be achieved by using a wire rod in which an unnecessary wire rod portion is removed from a part of a highly rigid wire rod in which a plurality of wire rods are integrated.

[0005]

The rigidity can be improved by integrating a plurality of wires by bonding or the like. As a result, it is possible to prevent buckling or deformation due to various resistances when the wire is sent out or handled. Also, since the number of parts wound around the core of the magnetic head is reduced to a predetermined number, it is possible to exert a predetermined function. This makes it possible to realize a winding device or the like with high handling reliability.

[0006]

EXAMPLE FIG. 19 is an external perspective view showing an example of a core used in a VTR or the like. The core 2 is a ferrite plate-shaped body having a thickness of about 0.4 mm and a size of about 2 to 3 mm in length and width. A window 3 for winding of about 0.3 mm × 0.3 mm (hereinafter referred to as a core window) is formed on the core 2, and an electric wire 1 having a core wire diameter of about 0.03 mm is provided on both sides of the core window 3. It is wrapped around. Although the number of turns of the electric wire 1 varies depending on the product, it is usually about 5 to 15 turns on the left and right sides. The toroidal core 2 is attached to the tip of the core base 4, and the base 4 is used by being attached to an upper cylinder (not shown).

FIG. 20 is an external perspective view showing an example of a core used for a magnetic disk or the like. The core 2 has a thickness of 0.
The head portion 2A is formed to have a length of about 4 mm and a length and width of 1 to 2 mm, and the slider portion 2C is formed to have a thickness of 2 mm and a length and width of about 3 to 5 mm, and is made of ferrite. A window 3 (hereinafter referred to as a core window) for winding of about 0.5 × 0.5 mm is formed in the head portion 2A of the core 2, and the core window 3 is provided on the opposite side of the slider portion 2B. Core diameter 0.0
The electric wire 1 of about 5 mm is wound. The winding of the electric wire 1 is usually 10 to 30 windings although it depends on the product.

An embodiment of the present invention and a magnetic head winding machine using the same will be described below.

FIG. 1 shows one embodiment of the present invention, which is a parallel electric wire 103 in which two wires 101 and 102 are bonded in parallel.
One of the wires 102 is partially removed by cutting.

FIG. 2 shows a partial single wire forming mechanism 104 for making the wire rod 1 of FIG.
6, lower cutter block 107, wire rod vertical movement blade 1
08 and a cylinder (not shown) for driving the same, an upper cutter block 110, cutter blades 111 and 112, and a cylinder (not shown) for driving the upper cutter block,
It consists of a turning cutter 114 and a cover 115.

FIG. 3 is an external perspective view showing the overall construction of a magnetic head winding machine using the present invention. As shown in FIG.
This device includes a core supply / discharge unit 6 that supports a core 2 so as to be movable in the Yθ direction with respect to a base 10, a winding unit 7 that winds the electric wire 1 around the core 2, and an electric wire to the winding unit 7. 1. The wire supply unit 9 for supplying 1 and the partial single wire conversion mechanism 104 for partially cutting one wire member 102 of the parallel electric wire 103 drawn out from the bobbin 84 and the terminal wire 1D from the core holding position in the Z axis downward direction in the drawing. It is composed of a terminal wire drawing section 5.

A circular groove 11A is formed on the base 10 of the winding portion 7.
And a cover 12 that covers the groove 11A forms a circular line guide 11. Notch 1 in part of wire guide 11
3 is provided, and the wire drawing rod 90 (or the core 2) is arranged so that the cutouts of the notch 13 are located on both sides of the wire passing hole 90A of the wire drawing rod 90 (or the core window 3 of the core 2). . The roller pair 21, 21 'is provided on the wire insertion side of the wire passage hole 90A (or the core window 3) of the wire guide 11.
, The roller pair 22/22 'on the line feeding side, and the roller pair 21/22' from the roller pair 22/22 'of the line guide 11.
・ Rollers 23 ・ 2 in two places on the way to 21 ′
3 ', 24, 24', their rotation axes are line guides 11
It is provided so that it is perpendicular to the plane formed by and the portion of each roller pair in contact with the roller is located in the line guide 11. Also, on the straight line connecting the core 2 and the roller 23 ',
A detector 8 for detecting passage of the electric wire 1 is provided, and further, a groove 11 between the roller pair 24, 24 'and the roller pair 21, 21'.
A detector 8A that detects passage of the electric wire 1 is provided on the lower surface of A.

On the base 10 of the wire supply unit 9, the roller pair 2
An arcuate groove 81A having a common tangent line of 1.21 'as a tangent line is provided, and the arcuate line guide 81 is constituted by the groove 81A and the cover 12 covering the groove 81A. Line guide 81
A cutter 82 is provided at a position separated from the core 2 by a predetermined length,
Further, a roller pair 83, 83 'is provided at a position distant from the core 2, and further the partial single wire unit 104 and then the bobbin 8
4 is provided. The roller pairs 83 and 83 'and the roller pairs 21 to 24' are controlled to rotate at the same peripheral speed.

Here, the partial single line conversion of the present invention will be described with reference to FIG. The parallel electric wire 103 pulled out from the bobbin 84 by the roller pair 83.
4 is guided in a guide groove 116 constituted by the wire rod guides 105 and 106 and the lower cutter block 107. The wire usually passes toward the bottom of the guide groove 116. In this state, as shown in FIG.
The upper cutter block 110 provided with 1, 112 is advanced by a cylinder (not shown) so that the cutter blades 111, 112 are located above the guide groove 116. Next, as shown in FIG. 4 (b), the wire rod upper and lower blades 108 are raised by a cylinder (not shown) to push up the parallel electric wire 103 and the wire rod 102.
Make a cut with the cutter blades 111 and 112. Next, as shown in FIG. 4C, the upper cutter block 110 is retracted, and the cutter blades 111 and 112 make notches in the wire rod 102, and both ends of the wire rod 102 are turned up at the lower end of the upper cutter block 110. Next, when the parallel electric wire 103 is fed by the roller pair 83, 83 ', the wire rod 102 is turned off by the turning cutter 114 as shown in FIG. 4 (d), and this portion becomes a single wire portion only for the wire rod 101. Next, when the wire rod up / down blade is lowered and the parallel electric wire 103 is fed by the rollers 83, 83 ', the parallel electric wire 103 descends toward the bottom of the guide groove 116 and returns to the initial state. By this, the wire rod 1 shown in FIG. However, for the sake of explanation, the upper cutter block 110 is omitted from FIGS. 4A and 4B, and the cutter blades 111 and 112 are omitted from FIGS. 4C and 4D.

Returning to FIG. 3, the core supply / discharge section 6 is a turntable 85 rotatably supported with respect to the base 10.
A turntable rotating means (not shown), and two core holding units 6A provided on the turntable 85.
And 6B. Further, the core holding unit 6A (6B) includes a slider 86A (86B) movably supported in the Y direction of the turntable 85, a driving means (not shown) for the slider 86A (86B), and the slider 86A. The core clamper 87A (87B) for holding the core 2, the gripper 88A (88B) for holding the terminal electric wire 1D, and the opening / closing means (not shown) are provided on the (86B).

FIG. 4 shows a sectional view taken along the line EE 'of FIG. The terminal wire drawing portion 5 has a tip 90B similar to the core 2 and a wire drawing rod 90 having a hole 90A at a position corresponding to the core window 3, and a bearing 91 fixed to the wire drawing rod 90.
And 91 ', and guide rails 92, 92' engaged with these bearings 91, 91 'and fixed to the base 10,
The rack 93 fixed to the wire drawing rod 90 and the rack 9
The shaft 9 of the motor 95 engaged with the motor 3 and fixed to the base 10.
It is composed of a gear 94 fixed to 5A. By rotating the motor 95, the tip 90B of the wire drawing rod 90 is moved from the core holding position shown by the solid line in the figure to the core 2 and the gripper 86A when the slider 86A is advanced as shown by the chain line in the figure. It can be moved to a position where it does not interfere with.

FIG. 5 shows a cross section taken along the line AA 'in FIG. The plane 14 formed inside the circular groove 11A provided in the base 10 is made lower than the plane 15 formed outside by a length ε slightly larger than the major diameter of the electric wire 1. Further, a cover 12 is provided so as to cover the groove 11A and the flat surface 14 from above. A portion formed by the groove 11A and the cover 12 is called a line guide 11, and a portion formed by a gap between the flat surface 14 and the cover 12 is called a gap 16.

The rotating shaft 30 of the roller 23 is rotatably supported by the bearing with respect to the base 10, and is connected to a motor 32 provided on the base 10 by a coupling 33. The roller 23 ′ is rotatably supported by a bearing 36 on a shaft 35 fixed to the swing arm 34. The swing arm 34 is swingably supported by the base 10 by a pin 37, and is connected to a pneumatic cylinder 39 by a pin 38 provided on the swing arm 34. This pneumatic cylinder 3
By moving 9 forward and backward, the pin 37 can be moved from the state in which the roller 23 'is pressed against the roller 23 to the position deviated from the plane 14 as shown by the alternate long and short dash line in the figure. The other four pairs of rollers have the same configuration.

Now, the winding method of this embodiment will be described with reference to FIGS. FIG. 7 shows a state in which the winding is completed. The core 2A that has completed the winding has a core holding unit 6
It is held at A and is in the winding section 7. Further, the tip portion 1E of the electric wire 1 wound around the core 2A is in a state of being sandwiched by the roller pair 23, 23 '. On the other hand, the core 2B is held by the core holding unit 6B and is in the core supply / discharge section. The tip portion 1A of the electric wire 1 is inside the wire guide 80 in a state of being sandwiched by the roller pair 83, 83 '. The cutter 81 is open,
The rollers 21 ', 22', 23 'and 24' are a pair of rollers 2
It is in a state of being pressed against 1, 22, 23, 24. The wire drawing bar 90 is in a lowered state.

As shown in FIG. 8, when the roller 23 'is tilted from the state shown in FIG. 7 and the slider 86A is retracted,
The tip portion 1E of the electric wire 1 wound around the core 2A is pulled out together with the core 2A, comes off the rollers 23, 23 ', and goes out into the gap 16. At the same time, when the tip portion 90B of the wire drawing rod 90 is raised to the core holding position, the tip portion 1E of the electric wire 1 in the core holding position is pushed up by the wire drawing rod 90 to a position deviated from the wire transfer path. .
When the rollers 83, 21, 22, 23, 24 are rotated in this state, the tip end portion 1A of the electric wire 1 moves to the roller pair 21.2.
By 1 ', it is fed to just before the core holding position.

As shown in FIG. 9, the tip portion 1A of the electric wire 1
8 is further fed from the state shown in FIG. 8 by the rollers 21 and 21 ′, advances while being guided by the line guide 11, and passes through the hole 90 A of the wire drawing rod 90. Wire drawing bar 90
Since the tip portion 90B of the electric wire 1 has a shape similar to that of the core 2, the tip portion 1A of the electric wire 1 has the same shape as the hole 90
You can pass A. Furthermore, the tip 1 of the wire 1
A is sent by the rollers 21 to 24 ', advances while being guided by the line guide 11, and reaches the detector 8A. Detector 8
When A detects the passage of the electric wire 1, the rollers 21, 22, 2
The rotation of 3, 24, 83 is stopped, the electric wire 1 is cut by the cutter 81, and the roller 21 is retracted. In addition, the turntable 85 is inverted during this time.

Further, as shown in FIG. 10, when the wire drawing rod 90 is lowered from the state shown in FIG. 9, the terminal electric wire 1D inserted through the hole 90A of the wire drawing rod 90 is drawn downward.

As shown in FIG. 11, the slider 86B is advanced from the state shown in FIG. 10 to hold the core 2B on the winding portion 7 and the gripper 88B to hold the terminal wire 1D. FIG. 12 shows a plan view of this state. Terminal wire 1
D is drawn below the wire drawing side of the core 2.
The line tip portion 1A is located between the roller pair 21 and 21 'and the roller pair 24 and 24'.

With the above, the wire supplying, terminal wire drawing, fixing and core supplying / discharging steps are completed. Next, the winding process will be described.

As shown in FIG. 13, from the state of FIG.
The roller 22 'is retracted, the roller 21' is returned from the retracted state, and is pressed against the roller 21. (State at point B in FIG. 17) Since the intermediate portion 1B of the electric wire 1 is fed by the rollers 23 and 23 ', it enters from the wire guide 11 to the gap 16 side.
Further, by rotating the rollers 23 and 23 ', tension is applied to the intermediate portion 1B of the electric wire 1 and the electric wire 1C already wound on the core 2. In this state, the roller 22 'is returned from the retracted state and pressed against the roller 22. (State at point D in FIG. 17) On the other hand, the tip end portion 1A of the electric wire 1 is fed by the rollers 24, 24 ', and advances while being guided by the line guide 11 to reach the rollers 21, 21'. Roller 24 'at this point
To evacuate. (State at point C in FIG. 17) Furthermore, the tip end portion 1A of the electric wire 1 is fed by the rollers 21 and 21 ', advances while being guided by the wire guide 11, and reaches the wire insertion side of the core window 3. At this time, since the intermediate portion 1Ba of the electric wire 1 is sent by the rollers 21 and 21 ', it enters the gap 16 side from the wire guide 11.

Hereinafter, the rollers 21 'and 2 shown by the alternate long and short dash line
2 ', 23', and 24 'indicate that they are retracted to a position deviated from the plane 14 shown in FIG.

Further, as shown in FIG. 14, the tip portion 1A of the electric wire 1 sent from the state shown in FIG. 13 by the rollers 21 and 21 'and coming out to the notch 13 has the electric wire 1C wound around the core 2.
Since tension is applied to the rollers 23 and 23 ',
Since the intermediate portion 1B of the electric wire 1 is pulled by the rollers 23 and 23 'without interfering with the electric wire 1C, it can pass through the core window 3 without interfering with the electric wire 1B.

The tip portion 1A of the electric wire 1 passing through the core window 3
Are further fed by the rollers 21 and 21 ', proceed while being guided by the line guide 11, and reach the rollers 22 and 22'.

As shown in FIG. 15, from the state of FIG.
The detector 8 detects the passage of the electric wire 1 and retracts the roller 23 'after a lapse of a certain time. Further, the roller 24 ′ is returned from the retracted state and pressed against the roller 24. (Fig. 17
State of point E) The intermediate portion 1B of the electric wire 1 is the roller 21.2.
1 ', and is gradually narrowed down from a large wire including the core 2 and the roller 21' to become a small wire. At this time, the roller 21 'is retracted, the roller 23' is returned from the retracted state, and the roller 23 'is pressed.
On the other hand, the tip portion 1A of the electric wire 1 is sent by the rollers 22 and 22 ', advances while being guided by the line guide 11, and reaches the rollers 23 and 23'.

As shown in FIG. 16, from the state shown in FIG. 15, the tip portion 1A of the electric wire 1 is fed by the rollers 23, 23 ',
Proceeding while being guided by the line guide 11, the roller 24
24 ', while the wire loop formed by the intermediate portion 1B of the wire 1 is narrowed towards the core 2.

As shown in FIG. 13, from the state of FIG.
The roller 22 'is retracted, the roller 21' is returned from the retracted state, and is pressed against the roller 21. (State at point B in FIG. 17) Since the intermediate portion 1B of the electric wire 1 is fed by the rollers 23 and 23 ', it enters from the wire guide 11 to the gap 16 side.
Further, by rotating the rollers 23, 23 ', tension is applied to the intermediate portion 1B of the electric wire 1 and the electric wire 1C already wound on the core 2. In this state, the roller 22 'is returned from the retracted state and pressed against the roller 22. (State at point D in FIG. 17) On the other hand, the tip end portion 1A of the electric wire 1 is fed by the rollers 24, 24 ', and advances while being guided by the line guide 11 to reach the rollers 21, 21'. Roller 24 'at this point
To evacuate. (State at point C in FIG. 17) Furthermore, the tip end portion 1A of the electric wire 1 is fed by the rollers 21 and 21 ', advances while being guided by the wire guide 11, and reaches the wire insertion side of the core window 3. At this time, since the intermediate portion 1Ba of the electric wire 1 is sent by the rollers 21 and 21 ', it enters the gap 16 side from the wire guide 11.

With the above, one-turn winding is completed. Thereafter, the same operation is repeated a predetermined number of times to perform winding.

By the above winding operation, a single wire is wound around the core of the magnetic head as shown in FIGS. 19 and 20, and the terminal portion becomes a wire material consisting of a single wire portion and a parallel wire portion. This single wire portion is connected to a necessary connecting portion (not shown), and the parallel wire portion is removed as an unnecessary portion for use.

Here, according to the present invention, the wire rod 1 is a partially monofilamentary wire rod, and the leading portion 1A and the intermediate portion 1B and the end portion 1 of the wire rod 1 which circulates in the wire guide 11 of the winding portion 7 are wound.
Most of D is a single wire, which is a portion 1C wound on the core while the parallel electric wire 103 remains as it is. Therefore, when the wire guide 11 goes around, it collides with the wire guide 11 due to frictional resistance or slight burrs, collides with the roller when entering the roller pair 21-24 ', and is caught by the roller pair 21-24'. Due to deformation, and further, the core window 3 and the wire 1C wound around the core window 3
The possibility of deformation and buckling due to a collision with a wire etc. is much less than that of a single wire. Further, the directionality of the tip portion of the wire 103 is more stable than that of a single wire, and the occurrence of the above troubles is extremely reduced. Further, even when the terminal wire is chucked by the grippers 88A and 88B, it can be more reliably chucked and stabilized than the single wire.

Next, another embodiment will be described. FIG. 18 shows another method of the magnetic head winding method. Figure 18 shows T
The V camera 130 and the image processing device (not shown) recognize the tip positions of the core window 3 and the wire 1 and correct the positions, and then the wire gripper 131 passes the wire through the core window 3.
Then, by the lower gripper 132, the wire 1
Chuck the tip of the and pull it out. Then the winding gripper 1
31 enters between the core 2 and the lower gripper 132, chucks the wire 1 between the core 2 and the lower gripper 132, returns the wire 1 between the core 2 and the TV camera 130 again, and enters the next winding cycle. . Also in this method, while the tip of the wire 1 is repeatedly chucked by the winding gripper 131 and the lower gripper 132, the tip of the wire 1 is deformed by contacting the chucking force or the core 2 or the already wound wire 1. And TV
Since it becomes difficult for the camera 130 to recognize the position of the tip of the wire 1, the deformation is so great that the camera cannot pass straight through the core window 3, and a winding operation error occurs. In contrast,
If the parallel electric wire 103 is a partly single wire, it is much less deformed even if it is chucked by the wire gripper 131 and the lower gripper 132 or comes into contact with the core window 3 and the wound wire 1, so that the winding operation is high. It will be reliable. Similarly, although there are various winding methods for the magnetic head core, the reliability of the wire can be increased by using the method of the present invention.

As for the wire rod 1, if the parallel electric wire 103 formed by adhering two wires has insufficient rigidity, it may be used by adhering three or four wires. Also in this case, it is possible to make a single wire or to make three wires into two wires by the partial single wire moving mechanism 104 of FIG. The wire used for reinforcement may be a material having high rigidity regardless of the winding specifications. Further, as shown in FIG. 21, the coating material may be partially thickly applied, or a reinforcing material may be adhered to the handling portion for reinforcement.

[0037]

As described above, it is possible to greatly improve the reliability of handling of wire rods in windings by using a wire rod that is formed by a bundle of a plurality of bundles and only the required number of parts is left functionally. High-speed winding, high reliability,
It has a great effect on speeding up and handling of linear objects. In addition, the effect is increased by using a wire having higher rigidity for a portion that is not required for the mechanism. Further, although it is usually extremely difficult to manufacture the wire rod 1 as described above, it is possible to easily manufacture the desired wire rod 1 by using the partial single wire forming mechanism of the present invention.

[Brief description of drawings]

FIG. 1 is an external view of a wire rod according to the present invention.

FIG. 2 is an external view of a partial single-tracking mechanism of the present invention.

FIG. 3 is an external view of the winding machine of the embodiment.

FIG. 4 is an explanatory diagram of an operation of converting a parallel line into a partial single line.

5 is a cross-sectional view taken along the line EE ′ of FIG. 3 showing the terminal wire drawing portion.

FIG. 6 is a sectional view taken along the line AA ′ in FIG. 3, showing a roller swing mechanism.

FIG. 7 is an explanatory diagram of a winding operation.

FIG. 8 is an explanatory diagram of a winding operation.

FIG. 9 is an explanatory diagram of a winding operation.

FIG. 10 is an explanatory diagram of a winding operation.

FIG. 11 is an explanatory diagram of a winding operation.

FIG. 12 is an explanatory diagram of a winding operation.

FIG. 13 is an explanatory diagram of a winding operation.

FIG. 14 is an explanatory diagram of a winding operation.

FIG. 15 is an explanatory diagram of a winding operation.

FIG. 16 is an explanatory diagram of a winding operation.

FIG. 17 is an operation time chart of windings.

FIG. 18 is an external view of Example 2.

FIG. 19 is an external view of a VTR magnetic head.

FIG. 20 is an external view of an HDD magnetic head.

FIG. 21 is an external view of a wire rod reinforced by reinforcement.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wire rod, 1A ... Wire rod tip part, 1C ... Wire rod wound on a core, 2 ... Core, 3 ... Core window, 4 ... Core winding part, 11 ... Wire rod guide, 16 ... Slit stop, 21 * 21 ', 22 ...
22 ', 23.23', 24.24 '... Laura, 101
... wire rod, 102 ... wire rod, 103 ... parallel wire, 104 ...
Partial single line mechanism, 107 ... Lower cutter block, 110 ...
Upper cutter block, 111, 112 ... Cutter blade, 114
… Turning cutter blade.

Claims (6)

[Claims] 1. A wire rod in which a plurality of wire rods are integrated is partially deleted to partially reduce the number of wire rods.
A method for strengthening the rigidity of a wire rod, characterized in that the number of wires that require rigidity for handling, etc. is increased, and the parts used for the original purpose are reduced to a predetermined number. 2. A wire rod used for improving the rigidity for handling, which is not necessary for the original purpose, among a plurality of wire rods,
A wire rod having different thickness, material, coating thickness, etc. for higher rigidity and a wire rod handling method using the wire rod. 3. A wire rod, which is reinforced by adding an auxiliary material to a handling part of the wire rod, and a handling method using the wire rod. 4. The winding device according to claim 1, wherein the winding is performed using at least one of the wire rods. 5. An electronic component wound by the winding device according to claim 4. 6. A cutter for cutting an end portion of a portion to be deleted in order to remove a part of a plurality of integrated wire rods, a first peeling mechanism for peeling the end portion, and an intermediate portion. A wire rod partial deletion device comprising a second peeling mechanism.