JPH0645173A - Wire inserting method and device - Google Patents

Abstract

PURPOSE:To provide a device and a method of surely inserting a fine wire into a through-hole provided to a member, where the members can be enhanced in yield. CONSTITUTION:Fine wires 1 and 2 are inserted into fine through-holes provided to a member 5, where binding means 8, 9, 10, 11, 18, and 19 which bind the tips of the fine wires 1 and 2, inserting means 12 and 13 which insert the tips of the fine wires 1 and 2 into one opening of a through-hole provided to a member 5 provided with holes after the tips are bound until the unbound parts of the fine wares 1 and 2 are made to protrude from the other opening of the through-hole, and a cutting means 14 which cuts off the tips that are bound for enabling the unbound part of the wires to protrude from the other opening of the through-hole after the wires are inserted are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire rod inserting method and apparatus, and more particularly to a technique for inserting a plurality of thin wires into a common through hole without ensuring sufficient clearance.

[0002]

2. Description of the Related Art A plurality of thin wires, for example, a plurality of copper wires having an outer diameter of about 0.06 mm which is as thin as a human hair, and a common wire having an inner diameter of about 0.2 mm are penetrated. It was difficult to automate the work of inserting the wire into the hole because the thin wire did not have the required rigidity.

For this reason, conventionally, the work of inserting a thin wire has been carried out by a skilled person by hand using a simple jig.

This conventional insertion work will be described with reference to the drawings. FIG. 11 is an explanatory view of the conventional thin wire insertion work. In the figure, a through hole 5a having an inner diameter of about 0.2 mm is formed in the cylindrical body 5 in the central longitudinal direction,
One opening end of the through hole 5a is previously inserted into the hole 100b of the insertion jig 100. This insertion jig 10
0 is a guide portion 100c communicating with the hole portion 100b and having an inner diameter slightly smaller than the inner diameter of the through hole 5a, and a tapered hole portion 100a communicating with the guide portion 100c and having an gradually increasing inner diameter. It is processed and formed.

With respect to the cylindrical body 5 set in the above state, the fine wires 1 and 2 which are preliminarily straightened with the tip of a toe or the like are moved in the direction of arrow A in the figure in a disjointed state, The ends 1a and 1b of the first and second ends are tapered holes 100
It is guided along the surface a and is inserted into the through hole 5a via the guide portion 100c.

[0006]

However, according to the above-mentioned method, as shown in FIG.
There is a case where a and 2a are bent on the surface of the tapered hole portion 100a due to an unexpected cause. However, if it is further forcedly inserted toward the cylindrical body 5 side from this state, the bent portion Z at the middle portion of the thin wire. Will occur.
Therefore, even if the insertion is stopped at this point and the thin wire is taken out again and then straightened again, the strain Zh remains due to residual stress in the thin wire.

As a result, the insertion work fails even once,
If the thin wire is bent, it will be difficult to insert it again.
Moreover, at the stage of inserting the thin wire in this way, since the predetermined part is often already wired in the thin wire, in order to insert it again, remove the failed thin wire from the part,
There is a problem that the yield must be deteriorated because wiring must be performed again for the parts.

Therefore, the partial wire rod insertion method and apparatus of the present invention have been made in view of the above-mentioned problems, and the object thereof is to improve the yield by surely inserting the thin wire into the through hole. An object of the present invention is to provide a wire rod insertion method that can be performed. Another object of the present invention is to provide a wire rod insertion device capable of improving yield by surely inserting a thin wire into a through hole.

In addition to the above-mentioned object, it is another object of the present invention to provide a wire rod insertion device capable of automatically and continuously inserting a plurality of thin wire rods into a perforated member having minute through holes.

[0010]

In order to solve the above-mentioned problems and to achieve the object, a partial wire rod insertion method and an apparatus thereof according to the present invention have the following configurations. That is, a wire rod insertion method of inserting a plurality of thin wire rods into a perforated member having a minute through hole, and a bundle-bonding step of bundling at least the tip portion of the thin wire rods, and a tip after the bundle-bonding step. Inserting the part from one opening of the through-hole, and inserting the thin wire material until the unbundled part that is not bundled in the bundling process comes out of the other opening, and after insertion, the unbundled part is the other And a cutting step of cutting the bundled tip portion so as to separately exit from the opening of the. Further, preferably, in the bundling step, after twisting the length of the through hole of the thin wire or more, the tip portion is further twisted to form a pointed shape by twisting, and also. Preferably, in the inserting step, the distal end portion is inserted using a guide means having a tapered guide hole portion that guides the one end portion of the through hole.

Further, preferably, in the bundling step, the tip portion of the thin wire is bundled by adhesion, and in the inserting step,
The distal end portion is inserted through a guide means having a tapered guide hole portion that guides the one end portion of the through hole.

Further, preferably, in the bundling step, the tip portion of the thin wire is bundled by welding, and the inserting step is performed.
The distal end portion is inserted through a guide means having a tapered guide hole portion that guides the one end portion of the through hole.

Further, preferably, in the wire rod inserting method, the bundling step further comprises a shearing step of diagonally shearing after bundling the tip portion of the thin wire.

Further, preferably, a wire rod insertion device for automatically inserting a plurality of thin wire rods into a perforated member having a minute through hole, and a bundling means for bundling at least a tip portion of the thin wire rods. After the bundling step, the tip portion is inserted from one opening of the through hole, and an insertion means for inserting the thin wire material until an unbundled portion that is not bundled in the bundling step comes out of the other opening, and after insertion. Cutting means for cutting the bundled tip end portion so that the unbundled portion can be separately ejected from the other opening.

Further, preferably, the bundled wire means is formed into a pointed shape by twisting at least the length of the through hole of the thin wire material and then further twisting the tip end portion and twisting it. The insertion means is inserted by using a guide means having a tapered guide hole portion that guides the tip portion to one opening of the through hole.

Further, preferably, a wire rod insertion device for automatically and continuously inserting a plurality of thin wire rods into a perforated member having minute through holes, and supplying a plurality of parts in which the thin wire rods are wired. A supplying means, a first conveying means for conveying the component from the supplying means to a bundled wire means for bundling at least the tip end portion of the thin wire, and the tip end portion from one opening of the through hole after the bundling step. Second conveying means for inserting and conveying the parts to the inserting means for inserting the thin wire material until an unbundled portion not bundled in the bundling step comes out from the other opening;
After the insertion, the parts are conveyed to a cutting means that cuts the bundled leading end parts so that the unbundled parts can come out separately from the other opening, and a carrying-out part that carries out the parts after cutting. And a third conveying means.

Further, preferably, the bundled wire means is formed into a pointed shape by twisting at least the length of the through hole of the thin wire material and then further twisting the tip end portion and twisting it. The insertion means is inserted by using a guide means having a tapered guide hole portion that guides the tip portion to one opening of the through hole.

[0018] Preferably, in the wire rod insertion device, the component is a magnetic head, the thin wire rod is two copper wires having an outer diameter of about 0.06 mm, which are wired to the magnetic head, and are also penetrated. The hole is formed by a perforated member having an inner diameter of about 0.2 mm.

[0019]

With the above structure, at least the tip portion of the thin wire material is bundled to prevent the tip portion from being dislocated, and the tip portion is inserted from one opening of the through hole while being prevented from being bent, and then inserted. After the unbundled line portion comes out of the other opening, the bundled tip portion is cut to surely insert a plurality of thin wires into the through holes.

Further, the feeding means for feeding a plurality of parts in which the thin wire is wired conveys at least the tip portion of the thin wire to the bundling means for bundling by the first conveying means, and after the bundling, the tip ends. Insert the part from one opening of the through hole,
The second carrying means conveys the thin wire material to the insertion means for inserting the thin wire material until the unbunched wire portion not bundled by the bundled wire comes out of the other opening portion, and after the insertion, the unbundled wire portion exits from the other opening portion. The cutting means, and after cutting, the third conveying means conveys the parts to the unloading means for unloading the parts, so that a plurality of thin wire rods are automatically fed to the perforated member having minute through holes. It works so that it can be continuously inserted.

[0021]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, FIG. 1 to FIG. 6 are explanatory views showing each step according to the first embodiment of the wire rod insertion method, in which the outer diameter of the magnetic head 7 for a hard disk is about 0.06 mm. While the two thin wires 1 and 2 made of enamel copper wire are pre-wired, the through hole to be described later has an inner diameter of about 0.2 mm and is a tubular body 5 made of nylon, polyethylene or the like and having a predetermined length. On the other hand, after the fine wire is inserted, the fine wire has a predetermined length so that the fine wire is scattered in the through hole.

First, in FIG. 1, two thin wires 1 and 2 made of a copper wire having an outer diameter of about 0.06 mm are preliminarily arranged in a discrete manner on the magnetic head 7. In this state, two thin wires are provided. The tip portions 1a, 2a of the thin wires 1, 2 are held by a twisting chuck 11 that twists the thin wires by rotating in the direction of the arrow F in the figure, and by the intermediate chuck 8 from the wire end portions 1a, 2a. The parts separated by the distance L1 are set in a state of being held.

In the above state, the twisting chuck 11 is driven in the direction of arrow F for a predetermined time or a predetermined number of rotations to twist the thin wires 1 and 2 for a distance L1. As a result, the state shown in FIG. Move to.

After that, the upper chuck 10 is moved in the direction of the double-headed arrow G as shown in FIG. 3, and the state in which the portion separated by the distance L2 from the line ends 1a and 2a is held is held. As a result, the twisting chuck 11 is further driven in the direction of the arrow F, and as a result, the fine wires 1 and 2 are twisted while being held by the upper chuck 10 and the twisting chuck 11 as shown in FIG. It is possible to obtain the sharp tips S of the thin wires 1 and 2 having a moderately tapered portion which is very convenient for insertion.

The thin wires 1 and 2 obtained through the above steps are
As shown in FIG. 5, the through hole 5a is inserted into the cylindrical body 5 formed in the central longitudinal direction.

For this reason, one opening end 5e of the through hole 5a is inserted into the hole 12b provided in the insertion jig 12 which is moved in the arrow H direction to the position shown by the broken line and solid line in the figure. It is moved in the direction of arrow B in the figure and is inserted. The insertion jig 12 is formed with a tapered hole portion 12a communicating with the hole portion 12b and having an inner diameter gradually increased from an inner diameter slightly smaller than the inner diameter of the through hole 5a.

With respect to the cylindrical body 5 set in the above state, as the feeding roller 13 is driven in the direction of arrow I, the tips S of the thin wires 1 and 2 are moved in the direction of arrow D in the figure. And the tips S of the thin wires 1 and 2 are tapered holes 12a.
As a result of being guided along the surface, it is inserted into the through hole 5a so that the sharp end S comes out from the other open end 5f of the through hole 5a. At the time of this insertion, since the tapered portion S is formed on the outer peripheral surface, which is convenient for insertion, as described above, the insertion can be carried out very smoothly.

Moreover, since the distance L1 corresponding to the through hole 5a is previously twisted as described above, a slight rigidity can be secured even for a fine wire, so that the point S is fed into the through hole 5a by the feeding roller 13. Can be actively sent to.

In FIG. 6, the tip S is the other end 5f of the tubular body 5.
After being taken out of the drawing, the untwisted thin lines 1 and 2 are cut at the cutting line C as the cutter 14 is driven from the state shown by the solid line to the position shown by the broken line. . Thus, along the cutting line C, the thin lines 1, 2
By cutting, the pointed portion S and the twisted wire rod portion that are no longer needed after the insertion are cut, and the insertion work is finished again by bringing them into the disjointed state before the insertion.

Next, FIG. 7 is a plan view showing a schematic configuration example of an automatic wire rod insertion device for automatically and continuously inserting a thin wire into a through hole through the steps described above (FIGS. 1 to 6). is there. In this figure, the components already described in FIGS. 1 to 6 are denoted by the same reference numerals in order to avoid duplication, and a description thereof will be omitted. However, for convenience of description, some of the components will be described again. Pray for.

In the figure, a large number of magnetic heads 7 in which fine lines 1 and 2 are wired are prepared as a work W1 in the previous step, and are arranged in order on a work pallet 20 shown by a broken line in the figure. Has been done. The cylindrical body 5 is inserted into the workpiece W1 prepared in this way as described above, then obtained as the workpiece W2, and then continuously provided on the workpiece pallet 28.

For the above reasons, the guide rail 21 is guided by the guide rail 21 on the base 50 shown by hatching in the figure, and is driven by a drive source (not shown) to drive to three different positions in the figure. Carriage 2
Two are provided.

The lower chuck 9 is mounted on the carriage 22.
The intermediate chuck 8 and the upper chuck 10 are mounted, and are configured to be appropriately operated as described above according to the work.

On the other hand, a twisting chuck 11 is provided so as to face the position where the carriage 22 is moved to the intermediate position, and a motor 18 which gives a rotational force to the twisting chuck 11 is fixed on a base 50. In addition, the driving force of the motor 18 can be twisted and transmitted to the chuck via the belt and the pulley 19.

Next, at the position where the carriage 22 is moved to the maximum movement position, a pair of feed rollers, at least one of which is movably provided at the position shown by the broken line, is provided. In addition, an insertion jig 12 is provided near the feeding roller 13 so as to be movable to a position indicated by a broken line and a solid line.

On the other hand, in order to set the tubular body 5 on the insertion jig 12 as shown in FIG. 5, the carriage 2 for moving the tubular body 5 to a position along the center line CL of the insertion jig 12.
7 is guided by the guide rail 26, and is configured to be moved in the direction of the arrow X in the figure by obtaining a driving force from a driving source (not shown). A cylinder moving mechanism 17 that moves a cylinder 17a that is movable on a line along the center line CL is fixed on the base 50 and moves the tubular body 5 to the insertion jig 12. Further, the base 50 is further provided with a cutter 14 so as to perform the above-mentioned cutting.

The carriage 24 guided by the guide rails 23 provided on the base 50 is equipped with a gripping chuck for gripping the cylindrical body 5. After moving to the position shown by the broken line, the gripping chuck is placed on the work pallet 28. It is configured to be transported.

An explanation of the operation of the wire rod insertion device described above will be given below.
This will be described with reference to the operation diagram of FIG. FIG. 8 shows a state in which the wire rod inserting device is in the middle of operation. The magnetic head 7 is previously prepared as the work W1 in the previous step,
The work palettes 20 are arranged in an orderly manner.

In the work W1 thus prepared in advance, the thin wires 1 and 2 have a total length which is more than twice the total length of the cylindrical body 5 as shown in the drawing. The thin wires 1 and 2 in the state can be retained in the through hole 5a of the cylindrical body 5.

The carriage 22 for the above work W1
Moves in the direction of the arrow X1 and is then gripped by the intermediate chuck 8 and the upper chuck 9,
Is stopped at the position where the tip is located. After this,
After the tip portion is gripped by the twist chuck 11, the motor 18 is activated to give a rotational force to the twist chuck 11 and twist the distance L1 as described with reference to FIG. Stop.

Next, the tip portion 1 by the upper chuck 10
After the a and 2a are gripped, the motor 18 is driven again and twisted to form the pointed portion S as described in FIG. 3, and the state shown in FIG. 4 is obtained. Continuing,
The carriage 22 is moved in the direction of the arrow X2 and stops at the position moved to the maximum movement position.
The both sides of the twisted portion are pressed by 3 so that the twisted portion can be fed. Here, a feed pawl mechanism may be provided instead of the feed roller.

Before or after the feeding roller 13 is moved to a predetermined position and waits for rotation, the two-divided insertion jig 12 is movable from the position shown by the broken line to the position shown by the solid line. To be done. Following this, the insertion jig 1
The carriage 27 is moved in the direction of the arrow X3 to a position along the center line CL of the insertion jig 12 in order to set the tubular body 5 with respect to 2 as shown. Next, the cylinder moving mechanism 1
7, the cylinder 17a is driven in the direction of arrow B, and the cylinder 5 is moved to the insertion jig 12.

As described above, from the point S to the through hole 5a of the cylindrical body 5.
Since the thin wires 1 and 2 are ready to be inserted therein, the feeding rollers 13 are driven in the direction of arrow I after the gripping of the chucks 8, 9 and 10 is released.

As a result, the work W1 is moved from the position shown by the broken line in the drawing to the position shown by the solid line in the direction of arrow D, and after the twisted portions of the thin wires 1 and 2 are completely inserted into the through hole 5a. Further, the untwisted portion is exposed from the through hole 5a.

Next, the cutter 14 is driven in the direction of arrow E to cut the twisted portion to obtain a finished product. Then, the carriage 24 is driven to the position shown by the solid line to be gripped by the gripping chuck 15, and after being moved to the position shown by the broken line, it is conveyed onto the work pallet 28 and a series of insertion operations is completed.

After that, the same operation is repeatedly executed to perform automatic operation.

As a result of completely automating the insertion work as described above, the yield is significantly improved as compared with the manual insertion work. Further, even when the number of the thin wires 1 and 2 is increased from the above-mentioned two to three or four, the point S can be obtained without any particular problem, and the work required time is substantially the same as the case of two. It was confirmed that when the number of thin wires is large, it is particularly efficient as compared with the manual insertion work.

Next, FIG. 9 is an external perspective view of a second embodiment of the wire bundle method. In this drawing, a total of four thin wires are bundled at the tip portions 1a, 2a, 3a, 4a using the adhesive 6 shown by hatching in the drawing.
After inserting the through hole from this state,
It is also possible to cut along the cutting line C and insert it. Finally, FIG. 10 is an external perspective view according to the third embodiment of the bundling method. In this figure, the total of three thin wires is the tip 1
The wires a, 2a and 3a are electrically welded and bundled. After being inserted into the through hole from such a state, it is also possible to cut along the cutting line C and insert.

Further, after the electric welding, cutting is performed along the oblique breaking line K, and then the wire is inserted into the through hole, so that the tip end can be prevented from being caught by the corner edge portion and can be inserted more reliably. In each of the embodiments described above, only the case where the component is a magnetic head and the thin wire is a copper wire having a predetermined diameter has been described, but it is needless to say that the invention is not limited to this and can be applied to various components. is there.

[0050]

As described above, according to the present invention, it is possible to improve the yield by surely inserting a plurality of thin wires into the through holes.

Further, it is possible to provide a partial wire rod insertion device capable of automatically and continuously inserting a plurality of thin wire rods into a perforated member having a minute through hole.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a first stage of a wire rod inserting method of a first embodiment.

FIG. 2 is an explanatory view showing a second stage of the wire rod inserting method of the first embodiment.

FIG. 3 is an explanatory view showing a third step of the wire rod inserting method of the first embodiment.

FIG. 4 is an explanatory diagram showing a manner of obtaining a tip portion S in a fourth step of the wire rod inserting method of the first embodiment.

FIG. 5 is an explanatory view showing a fifth step of the wire rod inserting method of the first embodiment.

FIG. 6 is an explanatory view showing a state of final cutting in a sixth step of the wire rod inserting method of the first embodiment.

FIG. 7 is a plan view showing a schematic configuration of the wire rod insertion device of the first embodiment.

FIG. 8 is an operation explanatory view of the wire rod insertion device.

FIG. 9 is an external perspective view according to the second embodiment of the wire rod inserting method.

FIG. 10 is an external perspective view of a wire rod inserting method according to a third embodiment.

FIG. 11 is a plan view showing a conventional wire rod insertion method.

FIG. 12 is a plan view showing a conventional wire rod insertion method.

[Explanation of symbols]

 1 thin wire, 2 thin wire, 5 cylindrical body, 6 adhesive, 7 magnetic head, 8 intermediate chuck, 9 lower chuck, 10 upper chuck, 11 twist chuck, 12 insertion jig, 13 feeding roller, 14 cutter, 17 cylinder mechanism 18 Motor, 20 work pallet, 21 guide rail, 22 carriage, 23 guide rail, 24 carriage, 26 guide rail, 27 carriage, 28 work pallet, 50 base, S point, C cutting line, F twisting direction, W is there.

Claims (10)

[Claims] 1. A wire rod insertion method for inserting a plurality of thin wire rods into a perforated member having a minute through hole, which comprises a bundling step of bundling at least the tip portion of the thin wire rod, After the step, an inserting step of inserting the tip portion from one opening of the through hole and inserting a thin wire material until an unbundled portion not bundled in the bundling step comes out of the other opening; And a cutting step of cutting the bundled leading end portion so that the unbundled wire portion can be separately brought out from the other opening portion. 2. In the bundling step, after twisting the length of the through hole of the thin wire or more, the tip portion is further twisted and twisted to form a pointed shape. The insertion step is performed by using the guide means having a tapered guide hole portion that guides the distal end portion to one opening portion of the through hole.
The wire rod insertion method described in. 3. In the bundling step, the tip portion of the thin wire is bundled by adhesion, and in the insertion step, a tapered guide for guiding the tip portion to one opening of the through hole. The guide means having a hole is used for the insertion.
The wire rod insertion method described in. 4. The bundling step bundles the leading end portion of the thin wire material by welding, and the inserting step guides the leading end portion to one opening of the through hole. The guide means having a hole is used for the insertion.
The wire rod insertion method described in. 5. The wire rod insertion method according to claim 3 or 4, wherein the bundling process further includes a shearing process of diagonally shearing after bundling the tip portion of the thin wire rod. How to insert a wire rod. 6. A wire rod insertion device for automatically inserting a plurality of thin wire rods into a perforated member having a minute through hole, and a bundling means for bundling at least the tip end portion of the thin wire rods, After the wire step, the tip portion is inserted from one opening of the through hole, and an insertion means for inserting a thin wire material until an unbundled wire portion that is not bundled in the bundling step comes out from the other opening, A cutting means for cutting the bundled leading end portion so that the unbundled wire portion can be separately pulled out from the other opening after the insertion, and a wire rod insertion device. 7. The bundling means is formed into a pointed shape by twisting at least the length of the through hole of the thin wire material and then twisting the tip end portion by twisting further. 7. The insertion means uses the guide means having a tapered guide hole portion that guides the distal end portion to one opening portion of the through hole so that the insertion portion is inserted.
The wire rod insertion device described in. 8. A wire rod insertion device for automatically and continuously inserting a plurality of thin wire rods into a perforated member having a minute through hole, and a supply means for supplying a plurality of parts in which the thin wire rods are wired. First transporting means for transporting the component from the supply means to a bundling means for bundling at least a tip portion of the thin wire, and after the bundling step, the tip portion is opened at one of the through holes. A second conveying means for inserting the thin wire into an inserting means for inserting the thin wire rod until an unbundled portion which is not bundled in the bundling step comes out from the other opening portion; and, after the inserting, A cutting means for cutting the bundled leading end portion so as to separately release the unbundled portion from the other opening portion, and the component is conveyed to the unloading means for unloading the component after the cutting. A third transport means, and A wire rod insertion device characterized in that 9. The bundling means is formed into a pointed shape by twisting at least the length of the through hole of the thin wire material and then twisting the tip end portion further by twisting it. The insertion means uses the guide means having a tapered guide hole portion that guides the distal end portion to one opening portion of the through hole, so that the insertion portion is inserted.
The wire rod insertion device described in. 10. The wire rod insertion device according to claim 8, wherein the component is a magnetic head, and the thin wire rod has an outer diameter of about 0.06 mm which is wired to the magnetic head.
The present invention is a copper wire, and the through hole of the perforated member has an inner diameter of about 0.2 mm.