JPS6356908A - Toroidal winding machine - Google Patents

Abstract

PURPOSE:To prevent the dispersion of insertion into a winding hole by sucking and holding the free end section of a wire rod in standard length at all times and delivering the wire rod to a hand holding and opening the wire rod in constitution in which a table supporting a work is turned and an arm with the hand is moved to the rotary table. CONSTITUTION:A cutter 46 cuts a wire rod C, a hand 15 is moved forward by a moving arm 13, and the free end section of the sustained wire rod C is inserted into a winding hole A. A wire-rod delivery means 16 is stood by at a forward position to a magnetic head core W at that time, the free end section of the wire rod C is sucked into a suction passage 33 from a suction pipe 35 for the wire rod through the ON of a vacuum, and the tip of the wire rod C is brought into contact with a terminal section 33a. Consequently, the length of suction of the wire rod C is brought to standard length. When the wire rod C in predetermined length corresponding to one time is taken out and the free end section of the wire rod is inserted into the winding hole A for the magnetic head core W, a rotary table 11 is rotated at 180 deg. in the direction indicated by the arrow. Accordingly, the wire rod C is wound in the winding hole A for the magnetic head core W only by a section corresponding to a half turn.

Description

TECHNICAL FIELD The present invention relates to a toroidal winding machine for winding a wire such as a coil around a closed winding hole.

"Prior Art and its Problems" A toroidal winding machine is known as a machine that winds a wire such as a coil around a closed hole such as a winding hole of a magnetic head or a motor rotor. However, all conventional winding machines
The wire is wound by rotating the arm that holds and releases the wire inserted through the winding hole around the workpiece that has the winding hole, which increases the size of the wire and complicates the structure. I couldn't deny it. In particular, when winding a wire by passing it through a very small winding hole, such as the winding hole of a magnetic head, it is virtually impossible to apply conventional equipment to this process.The operator manually winds the wire. The reality was that they were doing this.

OBJECTS OF THE INVENTION An object of the present invention is to solve the problems of the conventional devices and to obtain a toroidal winding machine that is small and suitable for winding small parts such as magnetic heads around winding holes.

``Summary of the Invention'' The present invention fundamentally changes the basic configuration of conventional devices in which an arm holding a wire rod is rotated around the workpiece, and a new device that rotates a table that supports the workpiece. It was completed based on an idea.

That is, the present invention supports a workpiece having a winding hole on a rotary table that rotates intermittently by 180 degrees, and
A wire fixing means for supporting one end of the wire to be inserted into the winding hole of the workpiece is provided on the rotary table, and a pair of left and right moving arms that can move forward and backward with respect to the rotary table are provided on both sides of the rotary table. Then, the left and right moving arms each support a hand that is rotatable about a rotation axis parallel to the rotation axis of the rotation table and holds and releases the wire rod.
Roughly speaking, the wire is moved forward and backward relative to the winding hole of the workpiece on the rotary table, and while holding the free end of the wire inserted through the winding hole with one hand and positioning it to a certain size. A moving arm is provided with a wire transfer means for transferring the wire to the other hand, and the free end side of the wire whose one end is supported on the rotary table by the fixing means is moved synchronously with respect to the rotary table in a stopped state. , the holding and releasing movement of the wire by the hand, the movement of the wire transfer means (transferring the free end of the wire rod to the other hand), the direction change movement due to the rotation of the hand, and the rotational movement of the rotary table. The feature is that the wire is repeatedly inserted into the winding hole of the workpiece and wound.

"Embodiments of the Invention" The present invention will be described below with reference to illustrated embodiments. Figure 2 (a
) and (b) show a magnetic head core wt as a workpiece to which the present invention is applied, and has a winding hole A closed at the negative end.

This toroidal winding machine for winding a coil around the winding pillar B at the outer end of the winding hole A of the magnetic head core W fixes the magnetic head core wtix as shown in FIGS. 1 and 3. Rotary table 11, left and right moving arms 12, ]3 of this rotating table 11, and this moving arm 12.1
The main components are a hand 14, 15 provided at the tip of the wire rod 3 and a wire transfer means 16 provided on the rotary table. The rotary table 11 removably supports the magnetic head core W by, for example, a vacuum mechanism, and its rotation center O is aligned with the bisector 6 of the magnetic head core W in the left-right direction to the winding hole. The moving arm 12.13 is movable from side to side in FIG. 1 by means of a well-known feeding mechanism including a feeding thread 17.18.

The hands 14.15 at the tips of the moving arms ]2, ]3 hold and release the wire C to be inserted into the winding hole A.
The structure is shown in the figure and FIG. That is,
The hand] 4.15 has, in the holder 19, a pair of positioning claw members 21 and a pair of movable claw members 22 that can be opened and closed about a pair of opposite guide shafts 20. The wire C is held at the open ends of both claw members 21 and 22. The localization claw member 21 is disposed at one end of the holder 9 and is inserted and held by an upper shaft 23 and a lower shaft 24 extending between the side walls of the holder 9. Compression springs 25 and 26 are respectively attached to the upper shaft 23 and the lower shaft 24 between the side wall of the holder 19 and the fixed position claw member 21, and bias the fixed position claw member 21 in the closing direction. When the tips of the compression springs 25 and 26 (positioning claw member 2) hold the wire C, the force is set to be strong enough to fix the wire C. When the positioning claw member 21 is released The movement is performed by an actuator 27.Moreover, the movable claw member 22 can be moved in one direction toward and away from the stereotactic claw member 21 by a guide shaft 20.A compression spring 28 is attached to the guide shaft 20. The fixed position claw member 21 of the movable claw member 22 is biased in the direction in which the movable claw member 22 comes into contact with the fixed position claw member 21.
The movement in the direction away from this is performed by an air cylinder (not shown). Further, the opening/closing operation of the movable claw member 22 is performed by an actuator 29. The opening and closing of the movable claw member 22 is linked to the opening and closing of the fixed position claw member 21, and the holding force of the movable claw member 22 against the wire C when the movable claw member 22 is closed by the actuator 29 is the holding force of the fixed position claw member 21. It is set weaker than the power. The holding position of the wire C by the fixed position claw member 21 and the movable claw member 22 in the hand 14, ]5 configured as described above is a straight line passing through the rotation center 0 of the rotary table 11, and is slightly bent upward.

The hand 14.15 also has a center of rotation P of its axis of rotation 30.
The movable arm 12,] 3 is rotatably supported by the movable arm 12, ]3. In this embodiment, the center of rotation P is located at an intermediate position of the hands 14 and 15, that is, at a position eccentric toward the fixed position claw member 21 from the position aS where the claw member 21 and the movable claw member 22 contact each other. be. I wanted to, hand 14
．． 15 rotates 180 degrees, as shown in FIG.
27L" is located on the opposite side from the original injury position. 31 is a rotary actuator. This rotary actuator 31 is
It rotates the hand 14.15 by 180 degrees,
When the hand] 4.15 is in a stopped state, the pair of claw members 21 and 22 are arranged symmetrically in a straight line. That is, the wire rod C located on a straight line can be held and released.

The rotary table 11 also rotates intermittently by 180 degrees, and its stopping position is at the winding hole A of the magnetic herad core W.
The end of the wire C is also located on the rotary table 11, which is a position where the direction of the wire C and the direction of the straight line are perpendicular to each other. Fixing means 32 are provided for fixing the parts.

The wire delivery means 16 is arranged on the rotary table 1 at a position adjacent to the magnetic rad core W. The wire transfer means 16 transfers the free end of the wire C inserted into the winding hole A of the magnetic head core W by one hand 14 or 15 to the other hand 15 or 14 using a vacuum. , as shown in FIG. 6, a suction drawing main body 34 has a suction passage 33 formed therein, and the suction drawing main body 34 is provided with a suction drawing main body 34, and the opening end of the extended suction passage 33 or the winding hole is connected to the suction drawing main body 34. A vacuum passage 36 is provided midway between the opposing suction vibrator 35 and the terminal end 33a of the suction passage 33, which communicates with the suction vibrator 35. The zero repulsion device main body 34 is attached to a guide shaft 37 arranged along a straight line,
It is guided by a guide shaft 37 by a sill ring (not shown) and moves forward and backward relative to the magnetic rad core W. The suction vibrator 35 uses a vacuum to suction and hold the free end of the wire C when it is inserted into the winding hole A by the hand 14 or 15 in the suction path 33 . Further, the vacuum passage 36 is connected to the suction passage 3
It communicates orthogonally with 3. Vacuum path 36% By communicating in such a state, the tip of the wire C in the vacuum ○N state is always connected to the terminal end 33a of the suction path 33.
comes into contact with. Therefore, it is possible to set the suction dimension of the wire C to a fixed size. FIG. 7 shows another example of the communication state of the vacuum passage 36 with the suction passage 33, in which the vacuum passage 36 is directed in an oblique direction toward the magnetic rad core W side, and is in diagonal communication with the suction passage 33. ing. This also makes it possible to suck in the wire C to a fixed size. The wire transfer means 16 suction-holds the free end of the wire C inserted into the winding hole A by the suction path 33 at the forward position, and transfers it to the other hand 15 or 14 at an intermediate position. With a small vacuum ○FF, the free end of the wire C becomes 18. The suction path 33 is released. The wire transfer means 16 is provided with an elevating mechanism (not shown), so that it can be moved to the retracted position (I7) and lowered to the retracted position.

Further, a coil holding mechanism 39 is provided on the rotary table 11. As shown in FIG. 8, this coil holding mechanism 39 has a holding arm 42 fixed to a rotor 41 of a rotary actuator 40, and a tip of this holding arm 42.
The zero-rotation actuator 40 is provided with a presser rubber 43 that contacts the outside of the winding column B of the magnetic herad core W.
By touching the presser rubber 43 to the outside of the winding column B,
It acts to prevent the wire rod C wound around from loosening. While the rotary table 11 is rotating, the presser arm 42 and the presser rubber 43 are magnetically released from the rad core W, as shown by the two-dot chain line.

In the diagram of the cylinder 1, 44 is a wire reel around which the wire C is wound, 45 is a holder that holds the wire C pulled out from the wire reel 44, and 46 is a cutter for cutting the wire C, both of which are connected to the cylinder device. By 47, straight 8!
Go up and down towards L.

The above configuration operates as follows. The wire C is drawn out from the wire 1 knoll 44, and its tip end is held by a guide, although not shown. When the movable arm 13 is in the retracted position (a position away from the rotary table 11, hereinafter the same), the fixed position claw member 2 on the hand 15 side is
1 and the movable claw member 22 grasp the tip of the wire C, and move the moving arm 130 forward to a predetermined position (rotary table 11 (
By moving in this direction (the same applies hereafter), the wire C is pulled out by a certain amount. At this time, since the holding force of the fixed position claw member 21 is stronger than that of the movable claw member 22, the wire C remains fixed by the fixed position claw member 21. As wire rod C is drawn out,
The air cylinder (not shown) of the hand 15 operates, and the wire C
The movable claw member 22, which is loosely held on one hand, is moved in the direction away from the fixed position claw member 21. By this movement of the movable claw member 22, the tip of the wire C held by the movable claw member 22 is squeezed into a straight line, and its curve is corrected. Next, the cylinder device 47 is activated, and the retainer 45 and cutter 46 are raised. The holder 45 holds the wire C%, and after the cutter 46 cuts the wire Ct, the cylinder device is moved forward by the moving arm 13, and the free end of the wire C held therein is inserted into the winding hole A. At this time, the wire rod passing means 16 is waiting at the forward position relative to the magnetic rod core W, the vacuum is turned on, and the free end of the wire C is sucked into the suction path 33 from its suction vibrator 35. The tip of wire C! ′! It comes into contact with the beveled portion 33a.

As a result, the suction length of the wire C becomes fixed. When the wire C is sucked and held by the suction path 33, the wire transfer means 16 retreats to an intermediate position and then stops. At this time, the movable arm 12 and the hand 14 are waiting at forward positions relative to the rotary table 11, and the fixed position claw member 21 and the movable claw member 22 of the hand 14 are free to move the tip of the wire C inserted into the winding hole. Grasp the ends. Now, the free end of the wire C is passed to the receiver 11 to the hand 14. At the same time, the vacuum of the wire rod delivery means] 6 is turned off, the wire rod delivery means 16 roughly retreats to the retreat position, and the wire C leaves the suction path 33 of the suction vibrator 35. The wire transfer means 16 does not interfere with the hand 14 by a lifting mechanism (not shown) (it descends and retreats to i2ffi. The hand holding the free end of the wire C] 4 is the above-mentioned hand)
As in case 5, the movable claw member 22 squeezes the tip to correct it. At this time, the cut end of the wire C is
It is fixed to fixing means 32. This fixing may be done by providing a guide mechanism for the wire C, or by an operator or by hand.

In the above process, a predetermined length of wire C is taken out, the free end of which is inserted into the winding hole A of the magnetic helad core W, and the other end is inserted into the fixing means 32 on the rotary table 1. This means that it has been fixed to .

Next, the moving arms 12 and 13 move to the rotary table 11.
The rotary table 11 is then moved back to a position where it does not interfere with the rotary table 11, and the rotary table 11 is rotated 180° in the direction shown by the arrow in FIG. 9(a). Then, in the winding hole A of the magnetic herad core W, as shown in FIG. 9(b)
As shown in the figure, the wire C is wound for half a turn.

In this state, the coil presser mechanism 39 brings its presser rubber 43 into contact with the outside of the winding column B of the winding hole A to prevent loosening. The hand 14 is connected to a rotary actuator 31.
This is also rotated by 180 degrees, and the tip of the wire C held by it is turned towards the rad core W again. After that, the moving arm 12 moves forward toward the rotary table 1],
The free end of the wire C held is inserted into the winding hole A again. At this time, the wire transfer means 16 is again waiting at the forward position relative to the magnetic rad core W, the vacuum is turned on, and the free end of the wire C inserted through the winding hole A is attracted and held in the zero and pull path 33. , move back to the intermediate position. By this time, the movable arm 13 has also come to the forward position again, and the hand 15 is on standby after being rotated 180 degrees. That is, when inserting the wire C into the winding hole, the movable claw member 2 is positioned close to the magnetic rad core W side.
2, the wire rod C is rotated about the rotation center P of the rotating shaft 30, and is moved away from the wire rod C. In this way, the holding position of the wire C is shifted between the holding position during insertion and the holding position when receiving it, and in particular, by moving the movable claw member 22 magnetically close to the rad core W during insertion, the tip of the wire C can be inserted into the insertion hole A. Makes insertion easy. And wire delivery means 1
6 receives the free end of the wire C that is being held under suction by the positioning claw member 21 and the movable claw member 22, and the hand 14 of the moving arm 12 releases the wire C that was being held.
In addition, the wire transfer means 16 (with its vacuum
It becomes FF and retreats, leaving the free end of the wire C away from the suction path 33.

Next, the hand 15 of the moving arm 12 and the moving arm 13 (again, the non-interfering position with the rotary table 11) of the moving arm 3 holds the wire C tightly against the winding column B. Wrap it around.

Hereinafter, the presser rubber 43 of the coil presser mechanism 39 is withdrawn from the winding column B, the rotary table 1 is rotated by 180 degrees, the presser rubber 43 of the coil presser mechanism 39 is brought into contact with the winding column B, the moving arm 12. 13's rotating table 1], the wire transfer means 16 transfers the wire C to the hand]4 or ]5, and the moving arm 12 and the moving arm]3 move backward. A wire rod C is wound around the winding hole A. In this case, the length of the free end of the wire C held by the hand 4 or 15 has already been adjusted to a fixed length by the wire delivery means 6, so the length of the free end of the wire C held by the hand 14 or 15 There is no variation in the insertion of the wire into the winding hole A.

Incidentally, in the above embodiment, the configuration uses the wire rod delivery means 16 or a vacuum, but the free end of the wire C is pinched at a predetermined position and the hand is held at the retracted position] 4 or 15
It is also possible to have a configuration in which the information is transferred to

If it is necessary to wind the magnetic held core W in an aligned manner around the winding hole A, a mechanism can be added to raise or lower the rotary table 11 by an amount corresponding to the wire diameter of the wire C each time the rotary table 11 rotates once. good.

Although the present invention has been described above using a magnetic helad core as an example, the present invention can be applied to all cases where windings are applied to other closed holes such as the rotor of a motor.

"Effects of the Invention" As described above, the toroidal winding machine of the present invention has a basic configuration in which the table that supports the workpiece rotates, and the arm equipped with the hand that holds and releases the wire moves relative to the rotary table. Therefore, compared to the conventional device in which the arm rotates outside the table, the device can be significantly miniaturized and the structure can be simplified. In addition, 5. Since the free end of the wire is always held under suction at a fixed size and delivered to the hand, the hand can maintain a constant length of the free end of the wire that is inserted into the winding hole of the workpiece, and the length of the free end of the wire that is inserted into the winding hole of the workpiece can be maintained constant. This can prevent variations in insertion.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a toroidal winding machine according to the present invention, and FIG.
The figures show a magnetic helad core as a workpiece to which the present invention is applied; (a) is a front view thereof, (b) is a plan view thereof, Fig. 3 is a front view of Fig. 1, and Fig. 4 is a FIG. 5 is a sectional view along line V-■ in FIG. 4, including the operating state, and FIG. 6 is a partial view of the wire transfer means of the present invention in relation to the workpiece. 7 is a sectional view showing another example of the vacuum passage in the wire transfer means of FIG. 6, FIG. 8 is a front view of the coil holding mechanism provided in the present invention and its surroundings, and FIG. This figure shows the relationship between the magnetic rad core on the rotary table, the wire inserted through the winding hole of the magnetic head core, and the hand that grips the wire. (a) shows the state before the rotary table is rotated;
(b) is a schematic plan view showing the state after the rotary table has been rotated by 180 degrees. W...Magnetic helad core, A...Winding hole, B...Winding column, C...Wire rod, 11...Rotary table, 12.
-・Movement arm, 13...Movement arm, 14.15・
...Hand, 16...Wire cost (f delivery means, 20...
・Guide shaft, 21... Localization hundred claw member, 22...
- Movable claw member, 27.29... actuator, 30
... Rotating shaft, 31... Rotating actuator, 32.
... Fixing means, separate path of 33, 33a... terminal end, 34... suction device main body, 35... suction pipe, 3
6... Vacuum passage, 37... Guide shaft,
39... Coil holding mechanism, 44... Wire reel,
45... Cage, 46... Cutter, 47... Schilling device. Patent applicant Alps Electric Co., Ltd. - Agent
Kunio Miura''; °, -)' Shigeru Matsui Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] (1) A rotary table that supports a workpiece having a winding hole and rotates intermittently by 180 degrees; wire fixing means provided on the rotary table that supports one end of the wire to be inserted into the winding hole of the workpiece; A pair of left and right movable arms provided on both sides of the rotary table so as to be able to move forward and backward with respect to the rotary table; supported by the left and right movable arms, respectively, so as to be rotatable about a rotation axis parallel to the rotation axis of the rotary table; , a hand that holds and releases the wire; and a hand that moves forward and backward with respect to the winding hole of the workpiece, and holds the free end of the wire that has been inserted through the winding hole with one of the hands and positions it to a certain dimension. a wire transfer means provided on a rotary table for transferring the wire to the other hand; and a wire transfer means provided on a rotary table for transferring the wire to the other hand, and stopping the free end side of the wire, one end of which is supported on the rotary table by the fixing means, synchronously. movement of the movable arm toward and away from the rotating table in the state, movement of the hand to hold and release the wire, movement of the wire transfer means to transfer the free end of the wire to the other hand, direction change movement due to rotation of the hand, and the rotating table. A toroidal winding machine that repeatedly inserts and winds a wire into a winding hole of a workpiece by rotating the wire.