JPH0514499Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a winding device for automatically winding small magnetic heads for electronic computers, VTRs, and other parts.

(Prior Art and Problems) The core size of small magnetic heads for storage devices of electronic computers has become extremely small.

Figure 14 shows one of the shapes of this type of magnetic head core.
As an example, 1 is a core and 2 is a hole for winding.

FIG. 15 shows an example of a wire inserted into the winding hole 2 and wound. The width W of this wire is, for example, about 0.13 mm, and the longitudinal dimension X of the winding hole 2 is 0.58 mm, which is very small, so there is considerable ingenuity in automatic winding.

FIG. 16 shows a conventional winding device. This winding device includes a feed roller 6 that sends out the wire 5, a guide chuck 7 that guides the wire 5 coming out of the roller 6, and a suction pipe that sucks the wire 5 that has passed through the winding hole of the workpiece (core) 10. It is equipped with 8.

In this case, the wire rod 5 twisted by the feed roller 6 is mechanically guided by the guide chuck 7 and the workpiece 1 is
However, if there is even a slight bend in the tip of the wire 5, the wire 5 cannot be inserted, so the tip of the wire 5 is cut each time before the wire 5 is inserted into the workpiece 10.

However, even if you try to insert the wire after cutting the tip of the wire, there is a drawback that it will be difficult to insert the wire if the workpiece core has a small winding hole, such as in a small magnetic head for a computer. .

(Means for Solving the Problems) In view of the above points, the present invention enables the wire to be reliably inserted and wound even in the smallest winding hole, and the wire rod can be wound during the winding work. It is an object of the present invention to provide a winding device in which the wire does not break or become loose even when the remaining length changes.

The present invention includes a nozzle having a wire rod hole for introducing and sending out the wire rod, and an air suction hole communicating with the wire rod hole, and facing the tip opening of the wire rod hole,
an air suction pipe that suctions the wire rod inserted into the winding hole of the workpiece, and an ironing chuck that holds and pulls the wire rod sucked by the air suction pipe;
a turning mechanism having a winding chuck that brings the tip of the wire held by the ironing chuck to the wire introduction side of the nozzle, the turning mechanism rotating about a first turning center axis as a fulcrum; The helical shaft is connected to the first
A lifting block is screwed onto the helical shaft to enable it to move up and down freely, and a winding drum with a wire in circumference is provided to the lifting block, and the winding chuck is connected to the winding drum. The above-mentioned problem is solved by a means that is arranged on the outside so as to rotate integrally with the drum and allows the winding chuck to pivot around a second pivot axis which is the central axis of the winding drum.

(Function) The wire winding device of the present invention utilizes air suction to feed the wire from the tip of the nozzle and insert it into the winding hole of the workpiece, so there is no bending of the wire during the wire feeding process, and small windings are possible. The wire can be inserted reliably even through the holes. In addition, we have established a training chuck,
In addition, by devising a turning mechanism with a winding chuck, the wire does not break or sag even if the length of the wire (the length that remains without being wound around the workpiece) changes during winding. , the wire can be wound with a predetermined tension. Therefore, it becomes possible to automatically wind a small magnetic head for an electronic computer, which has conventionally been difficult to automatically wind. Further, it is unnecessary to cut the tip end of the wire each time before insertion as in the conventional device, and the mechanism can be simplified. Furthermore, the wire rod can be smoothly fed out even at high speeds, and winding work can be performed at high speed.

(Example) Hereinafter, an example of the winding device according to the present invention will be described with reference to the drawings.

1 and 2 show the nozzle for introducing and delivering the wire and the associated mechanical parts, and FIGS. 3 and 4 show the function and movement of the nozzle, respectively.

In these figures, the nozzle 15 that introduces the wire 5 from the wire supply side and sends it out to the workpiece 10 side (for example, the magnetic head core in FIG. 14) has two nozzles in the center.
It is a divided structure, and the nozzle half body 15A,
It consists of 15B. These nozzle halves 15A and 15B are respectively mounted on a slide base 16.
A, 16B, each slide pedestal 16A,
16B is supported by a support member 17 so as to be slidable in the direction of arrow P in FIG. Each of the pedestals 16A and 16B is provided with a roller 18 as a cam follower, and a nozzle opening/closing arrow 1 is provided between the rollers 18.
9 moves forward and enters as shown in FIG. 4, each pedestal 16A, 16B opens, and thus the nozzle 15 is separated into two nozzle halves 15A, 15B.
Note that when the nozzle opening/closing arrow 19 is in the retreat position, the nozzle halves 15A and 15B are butted together and integrated by the force of a spring or the like (not shown).

As shown in FIGS. 3 and 4, the nozzle half bodies 15A, 15B have both half bodies 15A, 1
Wire rod grooves 20A and 20B are formed so as to form a wire rod hole 20 in the center of the nozzle when 5B is integrated, and a plurality of air suction holes 21 are formed so as to communicate with the wire rod grooves 20A and 20B, respectively. A vacuum hose 22 is connected to each of the air suction holes 21 formed therein. The tip of the vacuum hose 22 is connected to a negative pressure source such as a vacuum pump.
Here, the inner surface of the tip of the wire rod hole 20 is the wire rod 5.
Conical surface 2 is used to accurately define the feeding position of
3, and the advancing direction of the wire 5 in the wire hole 20 (arrow Q in FIG. 3) and the air suction direction of the air suction hole 21 (arrow R in FIG. 3) form an obtuse angle. This means that the wire 5 itself is connected to the air suction hole 2.
This is to avoid being drawn into 1.

Figures 5 and 6 show the wire hole 20 of the nozzle 15.
an air suction pipe for suctioning the wire rod 5 inserted into the winding hole of the workpiece 10, facing the opening at the tip thereof, and an ironing chuck for holding and pulling the wire rod suctioned by the air suction pipe; The accompanying mechanical parts are shown.

In these figures, an air suction pipe 27 is attached to a slider 26 that is slidably supported by a shaft 25 disposed along the feeding direction of the wire rod 5, and an air suction pipe 27 is inserted between the workpiece 10 and the tip of the wire rod hole 20. It is arranged so as to face the opening. A pipe vacuum hose 28 is connected to the air suction pipe 27. Also, on the slider 26 side, a fifth
As shown in the figure, a straining chuck 29 is provided which grips the wire 5 and pulls the wire 5 with a constant tension when the pipe 27 retreats.

The squeezing chuck 29 has a pair of clamping members 29
A, 29B, and the holding members 29A, 29B
is pivotally connected to a support member 30 that is slidably fitted into a spline at the tip of the air suction pipe 27. Both clamping members 29A and 29B are biased in the closing direction by an extension spring 31. Each clamping member 2
A roller 32 is pivotally attached to 9A and 29B, and the fifth
As shown in the figure, when the air suction pipe 27 is moving forward toward the workpiece 10, the distance between the rollers 32 is widened by the large diameter portion of the air suction pipe 27, and therefore the tips of the holding members 29A and 29B are open.

A wire 33 is connected to the slider 26,
The wire 33 is pulled in the direction of arrow S in FIG. 5 with a constant tension by the driving force of a motor or the like. When the slider 26 moves in the S direction, the air suction pipe 27 moves together with it, but since the roller 36 at the tip of the arm 35 on the base 34 side hits the roller 32 on the holding member side, the movement of the squeezing chuck 29 is limited to a certain amount. After a delay, the roller 32 comes into contact with the narrow diameter portion of the air suction pipe 27 and the distal ends of the holding members 29A, 29B are closed, and then the movement is started. Therefore, as shown in the one-dot chain line in FIG. 5 and in FIG.
9 moves in the S direction while holding the wire 5 with a constant tension.

FIG. 7 shows an outline of the structure and operation of a turning mechanism portion having a winding chuck that brings the tip of the wire rod 5 held by the ironing chuck 29 to the wire introduction side of the nozzle 15, and FIG. The figure shows details of the pivoting mechanism part with the winding chuck.

As shown in these figures, the turning mechanism 40 includes a winding chuck 41, a guide roller 42,
A winding drum 43 is provided.

Further, as shown in FIG. 8, a rotation block 45 is fixed to a rotation main shaft 44 that is pivotally supported on the base side, and is rotatably supported on the base.
A helical shaft 46 is pivotally supported, and a guide member 47 is provided upright. The axis of the rotation main shaft 44 is a first rotation center axis Z1, and the rotation center axis Z1 is set to approximately coincide with the winding hole of the workpiece 10, and the rotation main shaft 44 is used for a servo motor or the like. Connected to a driving source. Further, the helical shaft 46 and the guide member 47 extend in the radial direction of the first pivot axis Z1.

The helical shaft 46 is provided with an elevating block 48 having a female screw threaded thereon so as to be movable up and down, and the elevating block 48 is slidable in the elevating direction by a guide member 47 to prevent it from rotating together with the helical shaft 46. are guided by.

A winding drum rotating shaft 49 is supported on the lifting block 48 as shown in FIG. A rotating plate 53 is fixed to the tip. A drum mounting plate 55 is supported on the rotary plate 53 via a ball bush 54, and is driven in forward and backward directions by an air cylinder 56 on the rotary plate 53 side.
A winding drum 43 on which the wire rod 5 is circumscribed is provided on the drum mounting plate 55. Here, the axial center of the drum rotating shaft 49 and the central axis of the drum 43 are set to coincide, and the central axis of the drum 43 becomes the second pivot axis Z2. Further, a winding chuck 41 for clamping the wire rod from the base of the drum via an arm 57 and a guide roller 42 for circumscribing the wire rod are installed.

The winding chuck 41 is a pair of clamping members 4
1A, 41B, and the two clamping members 41A, 41B
is pivotally attached to arm 57, and is biased in the direction in which the ends close by an extension spring 60 between the two clamping members. A small air cylinder 61 is fixed to the rear of one of the clamping members.
When the rods of the clamping members 41A and 41B are extended,
The tip of B is designed to be open.

In such a turning mechanism 40, the winding chuck 41 can turn around the first turning axis Z1 with a large radius, and can also turn around the second turning axis Z2 with a small radius. When the lifting block 48 is located on the tip side of the helical shaft 46, the curve J1 in FIG.
The longest trajectory of the wire (the trajectory of the winding chuck when the wire is inserted into the workpiece for the first time) is drawn as shown in the figure, and the remaining length of the wire becomes shorter as the wire of workpiece 10 is wound. , the lifting block 48 is rotated by the rotation of the helical shaft 46.
Move closer to the 4th side to shorten the turning radius. Curve J2 in FIG. 7 is the shortest time locus of the wire (the locus of the winding chuck after the wire has been wound around the workpiece the required number of times).

In the configuration of the above embodiment, FIGS.
As shown in the figure, the wire 5 inserted into the rear end side of the wire hole 20 of the nozzle 15 is introduced into the nozzle by negative pressure due to air suction, and the tip of the wire 5 is attached to the conical surface of the tip of the wire hole. It is accurately positioned at 23 and sent out from the tip opening of the wire hole 20 toward the winding hole of the workpiece 10.

The tip of the wire inserted into the winding hole of the workpiece 10 is connected to an air suction pipe 27 that is close to and facing the tip opening of the wire hole 20 across the workpiece 10.
It is sucked inside and pulled. The air suction pipe 27 moves in the direction of arrow S while sucking the wire 5 as the slider 26 moves.

Thereafter, the straining chuck 29 holds the wire 5 and continues to move in the direction of the arrow S as the slider 26 moves as shown in FIG. At this time, the nozzle opening/closing arrow 19 moves forward to open the slide pedestals 16A, 16B as shown in FIG. 4, thereby separating the nozzle 15 into two halves 15A, 15B. As a result, feeding of the wire rod 5 from the nozzle side is stopped, and a certain tension is applied to the wire rod 5 that has passed through the workpiece 10 by the straining chuck 29.

After applying tension to the wire rod 5 with the ironing chuck 29, the sixth
Winding chuck 41 was waiting as shown in the figure.
moves forward together with the drum mounting plate 55 by the extension of the air cylinder 56 shown in FIG.
The tips of A and 41B are closed to hold the wire 5, and as the winding drum 43 rotates, it turns at a small radius around the second turning axis Z2, and moves to the A1, A2, and A3 positions as shown in FIG. Move to.

Next, the mechanical parts including the winding chuck 41, the guide roller 42, and the drum 43 rotate around the rotational main shaft 44, that is, the first rotation center axis Z1, at a large radius as shown by the arrow K, and these are placed in the position shown in FIG. I'm coming. At the same time, the wire rod 5 is held down by the wire rod presser 70. At this time, at the beginning of winding the wire 5, the turning radius is set to be the largest so that the wire 5 does not slacken.

After that, the spiral shaft 46 rotates and lifts the lifting block 4.
8 is lowered, and the winding chuck 41, guide roller 42 and drum 43 are moved to B1 as shown in FIG.
The position changes to position B2, which is close to the wire introduction side of the nozzle 15. At this time, air is blown out from the outer periphery of the drum to give tension to the wire 5 so that the wire 5 does not slacken. As a result, the tip of the wire 5 inserted through the winding hole of the workpiece 10 is redirected to the nozzle 1.
The wire is introduced into the wire hole 20 by the air suction force of 5.

After that, as shown in Figure 13, wrap around the chuck 4.
1 opens to release the wire rod 5, and retreats together with the drum mounting plate 55 of FIGS. 8 and 9, and rotates around the main rotating shaft 44, that is, the first pivot axis Z1, as indicated by the arrow L in FIG. 13. Wrapping chuck 4
1. The mechanical parts including the guide roller 42 and drum 43 rotate and return.

Thereafter, the tip of the wire 5 is sent out to the workpiece side again as shown in FIGS. 1 and 2, and the above-described operation is repeated. At this time, as the number of times the wire rod 5 is wound around the workpiece 10 increases, the helical shaft 46 is rotated to bring the position of the lifting block 48 closer to the first turning center axis Z1, and the remaining length of the wire rod is adjusted. Reduce the turning radius accordingly. This prevents the wire from breaking.

(Effects of the invention) As explained above, the winding device of the present invention has a nozzle that introduces and sends out the wire, and a tip opening of the nozzle that faces the nozzle, and the wire that is inserted into the winding hole of the workpiece. An air suction pipe that sucks air, an ironing chuck that holds and pulls the wire being sucked by the air suction pipe, and a winding process in which the tip of the wire held by the ironing chuck is brought to the wire introduction side of the nozzle. Since the structure includes a turning mechanism including a chuck, the following effects can be obtained.

(1) The wire rod 5 does not bend while passing through the nozzle 15, and the wire rod can be fed out accurately, making it possible to automatically wind the wire in small magnetic heads for electronic computers, etc., which has been difficult in the past. Further, there is no need for the step of cutting the ends of the wire rods one by one.

(2) In addition to inserting the wire into the workpiece,
By devising the straining chuck and turning mechanism, it is possible to wind the wire multiple times while applying a predetermined tension to the wire.

(3) The turning mechanism can change the turning radius of the winding chuck in accordance with the change in the remaining length of the wire rod as the number of windings increases, thereby preventing cutting accidents and excessive loosening of the wire rod.

(4) The wire can be smoothly fed out by the nozzle 15, and the speed of automatic winding can be increased.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the winding device according to the present invention, showing a nozzle and its accompanying mechanical parts, Fig. 2 is a side view of the same, and Fig. 3 shows the nozzle halves abutted and integrated 4th cross-sectional plan view of the transformed state
The figure is a plan view of the nozzle halves separated, Figure 5 is a side sectional view showing the air suction pipe and the ironing chuck, Figure 6 is a schematic side view showing the operation of the air suction pipe and the ironing chuck, 7 is a schematic side view showing the operation of the turning mechanism having a wrapping chuck, FIG. 8 is a front sectional view of the turning mechanism having a wrapping chuck, FIG. 9 is a plan sectional view thereof, and FIG.
13 are schematic side views sequentially showing the operation of the turning mechanism, FIG. 14 is an explanatory diagram showing an example of a magnetic head core, FIG. 15 is a sectional view showing an example of a wire rod, and FIG. 16 is a conventional It is a top view showing a winding device. 10...Work, 15...Nozzle, 20...Wire rod hole, 21...Air suction hole, 27...Air suction pipe, 29...Stretching chuck, 40...Swivel mechanism, 41...Wrapping chuck, 42 ... Guide roller, 43 ... Winding drum, 46 ...
Spiral shaft, 48... Lifting block.

Claims (1)

[Scope of Utility Model Registration Claim] A nozzle having a wire rod hole for introducing and feeding out the wire rod, and an air suction hole communicating with the wire rod hole, and a nozzle facing the tip opening of the wire rod hole, and a nozzle for winding the workpiece. An air suction pipe that suctions the wire inserted into the wire hole, an ironing chuck that holds and pulls the wire that has been suctioned by the air suction pipe, and an ironing chuck that holds and pulls the wire that has been suctioned by the air suction pipe, and a tip of the wire held by the ironing chuck that is inserted into the nozzle. and a turning mechanism having a winding chuck that brings the winding chuck to the wire introduction side of the wire rod, and the turning mechanism rotates the helical shaft around the first turning center axis by means of a turning block that rotates about the first turning center shaft as a fulcrum.
A lifting block is screwed onto the helical shaft to enable it to move up and down freely, and a winding drum with a wire in circumference is provided to the lifting block, and the winding chuck is connected to the winding drum. A winding device characterized in that the winding chuck is arranged on the outside so as to rotate integrally with the drum, and the winding chuck is rotatable about a second central pivot axis which is the central axis of the winding drum.