JPS6148243B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for winding a minute toroidal coil, particularly for use in magnetic heads of video tape recorders, electronic computers, etc., among toroidal coils.

For example, as shown in Figures 1 and 2,
A hole 2 with a width of 0.32 mm and a length of 0.45 mm is placed in the center of a plate-shaped member 1 with an external width of 2.3 mm, a length of 3 mm, and a thickness of 0.15 mm.
A magnetic head has been put into practical use in which a coil 3 is formed from a wire with a diameter of 0.03 mm on a toroidal core formed with a magnetic head as shown in the figure. Winding of such a minute toroidal coil has conventionally been done manually, which has the drawback of extremely poor workability.

An object of the present invention is to eliminate the drawbacks of the prior art described above and to provide a winding method and device that can automatically wind a minute toroidal coil.

In order to achieve the above object, in the present invention,
One end of the wire cut to a predetermined length is fixed in a predetermined position, and the other end is held so that the tip faces the core hole from the front side of the toroidal core while applying vacuum suction to the core hole. After passing through the wire and pulling it out to the rear side of the toroidal core, the tip of the pulled out wire is held and transferred toward the front side of the toroidal core, while tension is applied to the wire and the wire is pulled out from the core hole and wound around the toroidal core. It is characterized by forming a turned toroidal coil.

An embodiment of the present invention will be described below with reference to the drawings.

3 to 18 show a first embodiment of the present invention, in which a winding device A includes a holding means for holding the toroidal core so that the axis of the core hole thereof is perpendicular. B, a fixing means C for fixing one end of the wire 6, and a vacuum suction on one end of the wire 6, which is supported movably up and down below the toroidal core held by the holding means B, and faces the core hole from above. A pull-out means D that pulls out the wire downward, a tension means E that applies tension to the wire rod 6 in the winding, and are arranged so as to face these holding means B, fixing means C, pull-out means D and tension means E, It is constituted by a transfer means F that transfers one end of the wire rod 6 along the path.

The toroidal core 1 is fixed to a core base 4 in advance as shown in FIG. 4. A hole 5 is formed in the core base 4 for passing the wire 6 therethrough.

Holding means B: The holding means includes a fixed arm 13 having a stepped groove 11 formed at one end so as to place the core base 4 thereon, and a stopper 12 formed at the open end thereof, as shown in FIG. , a slider 14 slidably fitted into the groove 11, a leaf spring 15 fixed to the upper surface of the slider 14 so as to protrude toward the open end of the groove 11, and the slider 14. Compression coil spring 16 pressing against the open end side of the groove 11
(hereinafter simply referred to as a spring) and a leaf spring 17 provided on one side of the groove 11. Therefore, the slider 14 is connected to the spring 1
When the core base 4 is inserted into the step in the groove 11 while pressing the leaf spring 17 with the core base 4 moved to the 6 side, the core base 4 is moved by the elastic force of the leaf spring 17. It is pressed against the side surface of the groove 11. When the slider 14 is then released, the slider 14 is pushed out by the spring 16 until it hits the core base 4 and presses the core base 4 against the stopper 12. Then, the leaf spring 15 rides on the core base 4, pushes the core base 4 against the stepped portion of the groove 11, and fixes it. In this way, the toroidal core 1 is positioned by the step and side surface of the groove 11 of the fixed arm 13 and the stopper 12.

Fixing Means C The fixing means C is composed of the fixing arm 13 and a plate spring 18 fixed to the fixing arm 13, and is configured to sandwich and fix the wire 6 between the fixing arm 13 and the plate spring 18. It's getting old.

Pull-out means D The draw-out means D includes a guide shaft 21 arranged vertically below the fixed arm 13 as shown in FIG.
A nozzle body 23 is slidably supported on this guide shaft 21 via a pole bushing 22, a nozzle 24 formed in this nozzle body 23 and opening upward, and a hole 25 and a tube 26 communicating with this nozzle 24. vacuum pump 27 connected via
a clamping plate 29 formed with a hole 28 communicating with the nozzle 24 and slidably disposed above the nozzle 24; an air cylinder 30 for sliding the clamping plate 29; It is composed of a rack 31 formed at one end and a pinion 33 fixed to a pulse motor 32 and arranged to mesh with the rack 31.

With such a configuration, the pinion 33 is rotated to raise the nozzle body 23 via the rack 31, bringing the clamping plate 29 close to the toroidal core 1, and connecting the nozzle 24, the hole 28, and the core hole 2.
With the axes of the vacuum pump 27 almost aligned,
is activated, and one end of the wire 6 facing the core hole 2 from above the toroidal core 1 is sucked into the nozzle 24. Here, since the vacuum suction has the effect of taking in the surrounding air, the surrounding air will flow toward a certain point, and the flow itself will be a quiet laminar flow, which will cause the ultra-fine wire material that is the object of the present invention to flow. It is very effective in guiding and drawing it into minute core holes. Next, the compressed air supplied to the cylinder 30 is switched to atmospheric pressure, and the clamping plate 29 is moved to the cylinder 3.
0 side, and the end of the wire 6 is clamped and fixed between the hole 28 and the nozzle 24.

In this state, the pinion 33 is rotated by the pulse motor 32, and the nozzle body 23 is rotated through the rack 31.
When the wire rod 6 is lowered, the wire rod 6 is pulled out from the core hole 2.

Tension Device E As shown in FIG. 7, the tension device E includes a movable table 37 slidably supported between a pair of rails 36, a pulse motor 38 supported by this movable table 37, and the movable table. A drum 42 is rotatably supported by a plurality of rollers 40 which are rotatably supported by a plurality of rollers 40 via metal fittings 39 at A guide plate 44 is fixed and has an elongated hole 43 formed therein, and is supported by the movable table 37 via a metal fitting 45 so that its axis coincides with the axis of the drum 42, and a pulley 46 is fixed at one end. a pulse motor 47, a belt 49 stretched between a pulley 48 rotatably supported at one end of the guide plate 44, and the pulley 46; It is composed of a tension rod 50 which is fixed and whose attitude is regulated by an elongated hole, and is adapted to slide back and forth on the rail 36 by a cylinder 51.

With such a configuration, the pulse motor 47
When the belt 49 rotates, the pulley 46 rotates and the belt 49
is moved, and the tension rod 50 is moved along the elongated hole of the guide plate 44. Further, when the pulse motor 38 is rotated, the drum 42 is rotated via the coupling ring 41, and the guide plate 44 is rotated, thereby causing the tension rod 50 to rotate around the axis of the drum 42. At this time, since the axis of the pulley 46 is aligned with the axis of the drum 42, no slack occurs in the belt 49. Further, by operating the cylinder 51 and sliding the movable table 51, the tension rod 50 can be advanced or retreated from the path of the wire 6.

Transfer Means F As shown in FIG. 8, the transfer means F for the wire rod 6 includes a casing 57 that is slidably supported by a guide bar 56 that is supported in parallel between a pair of support fittings 55, and a casing 57 that is , a disk 59 rotatably supported via a bearing 58, a pulse motor 61 supported by the housing 57 via a metal fitting 60, and a timing pulley 62 fixed to one end of the rotating shaft of the pulse motor 61. and a timing pulley 64 fixed to a shaft 63 protruding from the disc 59; and a timing belt 65 that connects the disc 59
A gripper G is rotatably supported via a bearing 66 at a position eccentric from the center of the gripper G, and a gear 67 is fixed to one end of the gripper G; A pulse motor 69 to which a pulley 70 is fixed, and a pulse motor 69 rotatably supported by the shaft 63 and the gear 6
7 and the gear 71 meshing with the timing pulley 70.
A relay shaft 73 to which a timing pulley 72 facing the timing pulley 72 is fixed, a timing belt 74 stretched between the timing pulley 70 and the timing pulley 72, and compressed air supplied from one end of the shaft 63 are guided to the gripper G. It is composed of a pipe 75 and a rotary joint 76.

With such a configuration, the pulse motor 61
By rotating the timing pulley 6
2-timing belt 65-timing pulley 6
The disc 57 is rotated in the desired direction via the 4-axis 63. At this time, the gripper G revolves around the axis of the disk 59 and also rotates due to the meshing of the gears 71 and 67. Therefore, in order to prevent the gripper from rotating, it is sufficient to rotate the pulse motor 69 and rotate the gear 71 in synchronization with the rotation of the disk. Note that when there is no need to rotate the gripper G, the bearing 66, gear 67, pulse motor 69, timing pulleys 70, 72,
The timing belt 74, gear 71, relay shaft 73, etc. may be omitted, and the gripper G may be directly fixed to the disk.

Gripper G As shown in FIG. 9, the gripper G includes a housing 80 rotatably supported by a disc 59 via a bearing 66, a pair of stoppers 82 formed in a hole 81 formed in the housing 80, 8
3, and is slidably fitted between the springs 84 and 84.
a hollow rod 85 that is axially biased by a spring 86;
7 and is slidably fitted into a hole 88 formed at one end of the housing 80, and the rod 8
5 is rotatably supported by a support plate 89 coupled to one end of the support plate 89 and a pin 90 implanted in this support plate 89, a roller 91 is rotatably supported at one end, and a buffer member is provided at the opposite surface of the other end. Nail 93 with 92 attached
, a spring 94 that applies rotational force to the claw 93 so that the tip of the claw 93 opens, and the roller 9
1 and a cam 95 fixed to one end of the rod 87 so as to face each other. The counter pressure of the spring 86 is set to be sufficiently larger than the counter pressure of the spring 84.

With this structure, when compressed air is supplied from one end of the hole 81 and the rod 81 begins to move toward the pawl 93, the rod 85 is pushed by the counter pressure of the spring 86, and the rod 85 is pressed against the spring. It moves forward against the counter pressure of 84 until it hits the stopper 83. Then, the support plate 89 is pushed by the rod 85 and protrudes from the housing 80, and the claw 93 also moves forward. Even if the rod 85 hits the stopper 83, when the rod 87 is further pushed, the rod 87 moves forward against the counter pressure of the spring 86, causing the cam 95 to be inserted between the rollers 91. Then, the claw 93 rotates about the pin 90 so that the buffer member 92 comes into contact with it, and holds the wire 6 between the buffer members. After the wire 6 is transferred along a predetermined path in this state, when the compressed air supplied into the hole 81 is gradually released into the atmosphere, the rod 87 is first moved backward by the counter pressure of the spring 86. . Then, since the cam 95 separates from between the rollers 91, the claw 93 opens due to the counter pressure of the spring 94, and the wire 6
to open. Then, when the compressive force applied to the spring 86 becomes smaller than the compressive force applied to the spring 84, the spring 84 also begins to expand, causing the rod 85 to retreat. Therefore, the support plate 89 is also pulled by the rod 85 and the hole 88 of the housing 80 is pulled.
The claw 93 is also moved away from the path of the wire 6.

In the above configuration, as shown in FIG. 10, the toroidal core 1 is held by the holding means B, one end of the wire 6 cut to a predetermined length is passed through the hole 5 of the core base 4, and then the fixed arm 13 and plate spring 18 and fix it. Then, while holding the other end of the wire 6 with the claw 93 of the gripper G, the center part of the wire 6 is hung on the tension rod 50, and while applying a predetermined tension to the wire 6, the tip held by the claw 93 is attached to the toroidal core. Face core hole 2 of 1. Then, the holding plate 29 holds the drawing means D to the toroidal core 1.
Then, as shown in FIG. 11, the tension rod 50 is lowered to loosen the tension on the wire 6 while applying vacuum suction using the pull-out means D, and the claw 93 is opened to release the wire 6. do.
Then, the wire 6 is sucked into the nozzle 24 of the drawing means D through the hole 2 of the toroidal core 1. When the tip of the wire rod 6 is sucked into the nozzle 24, the clamping plate 2
9 moves to clamp the wire 6 between it and the nozzle 24, and the vacuum suction is turned off. Then, the 12th
As shown in the figure, as the claw 93 retreats, the drawing means D also descends to draw out the wire 6 downward. During this time, the claw 93 moves to a position facing the wire rod 6 drawn out below the toroidal core 1. And the first
As shown in FIG. 3, when the claw 93 is moved forward and the tip of the wire rod 6 is held again by the claw 93, the clamping plate 29 moves and releases the clamping of the wire rod 6, and then the drawing means D releases the wire rod 6. falls further. at the same time,
As shown in FIG. 14, the tension rod 50 was raised to apply a predetermined tension to the wire 6 and the wire 6 was straightened, and then, as shown in FIG. 15, the tension rod 50 was lowered and retreated. Afterwards, it is lowered to a height located between the toroidal core 1 and the claw 93. As shown in FIG. 16, the tension rod 50 projects into the path of the wire 6 pulled out from the core hole 2 of the toroidal core 1 as the claws 93 revolve, and as shown in FIG. The wire rod 6 is moved across the circumference to pull out the wire rod 6 from the core hole 2, and a predetermined tension is applied to the wire rod 6. At this time, the wire 6 at the upper end of the claw 93
In order to prevent bending, the claw 93 rotates counterclockwise. Then, while maintaining the tension of the wire rod 6 at a predetermined value from the state shown in FIG.
3 and the tension rod 50 at the same time, and the claw 93 is rotated clockwise to move it to a position where one end of the wire 6 faces the core hole 2 of the toroidal core 1, as shown in FIG.

By repeating the above operations, a toroidal coil can be wound.

19 to 25 show other embodiments of the present invention, in which the winding device A' is
A holding means B' that holds the toroidal core so that the axis of the core hole is vertical and moves it horizontally, a fixing means C that fixes one end of the wire, and a holding means B' that holds the toroidal core. A pull-out means D is disposed so as to be movable up and down below the toroidal core, and vacuum-suctions one end of the wire rod 6 facing the core hole from above and pulls it out downward; and a tensioner that applies tension to the wire rod 6 in the winding. means E, a transfer means F arranged to face these holding means B', fixing means C, drawing means D and tension means E and for transferring one end of the wire 6 along a predetermined path; and a core hole. Sandwich the wire rod 6 pulled out below the wire rod 6
The core hole is composed of a lower guide means H that regulates the path of the wire rod 6, and an upper guide means J that clamps the wire rod 6 transferred above the core hole and restricts the path of the wire rod 6.

Of the above configurations, the fixing means C, the drawing means D, the tension means E, and the transfer means F are the same as those in the first embodiment, so their explanation will be omitted.

Holding Means B' As shown in FIG. 20, the holding means B' includes a movable arm 13' that is slidably supported by a pair of rails 96 and holds a nut (not shown) on the lower surface, and a pulse motor at one end. 97 and screwed into the nut, the feed screw 98 slides the movable arm 13' along the rail 96 by rotation of the pulse motor 97. Since the other parts are the same as those of the first embodiment, they are indicated by the same reference numerals as in FIG. 5.

Lower Guide Means H As shown in FIG. 21, the lower guide means H includes a cylinder 101 fixed to the machine frame, and is fixed to one end of the rod of this cylinder 101, and has a U-shaped groove 102 formed at the tip. After the wire rod 6 is pulled out from the core hole 2 of the toroidal core 1, the wire rod 6 is moved forward, and the groove 102 engages with the wire rod 6, thereby regulating the path of the wire rod 6.

Upper Guide Means J As shown in FIG. 22, the upper guide means J includes a slider 108 that is slidably supported by a rail 106 on which a stopper 107 is formed and is formed with a protrusion 109 that engages with the stopper 107, and this slider. a line guide 110 fixed to one end of 108;
A plurality of guide claws 112 are fixed to a shaft 111 fixed to the slider 108, and the guide claws 112 are rotatably supported by the shaft 111 and are opposed to the line guide 110, and have distal ends attached in a direction away from the line guide 110. a biased line guide 113; a guide claw 114 formed integrally with the line guide 113 and facing the guide claw 112; , the other end is attached to the line guide 11
A rod 116 is brought into contact with the wire guide 113 and rotated by pushing the wire guide 113, and the protrusion 109 and the rod 1
16 and a spring 117 installed between the two.

Since the configuration is as described above, the cylinder 115
When the rod is moved forward, the protrusion 109 moves to the stopper 1.
07, the slider 108 moves the line guides 110, 113 and the guide claws 112, 114 above the toroidal core 1, and is pulled up above the core hole 2 of the toroidal core 1 by the tension means E. After aligning with the wire rod 6,
When the rod of cylinder 115 is further advanced,
The rod 116 moves forward while compressing the spring 117, pushes and rotates the wire guide 113, and the wire guide 110 and the wire guide 113 sandwich the wire rod 6 therebetween. At this time, the guide pawl 114 also rotates, and the wire rod 6 is sandwiched between the guide pawl 114 and the pawl 112. When the cylinder 115 rod is retracted, the spring 117
Due to the counter pressure, the rod 116 is first moved back, the line guide 113 and the guide claw 114 are rotated and opened, and then the slider 108 is moved back.

In the above structure, in the same manner as in the first embodiment, the fixing means C is cut into a predetermined length and one end is attached to the fixing means C.
One end of the wire 6 which is fixed by the wire rod 6 and passed through the hole 5 of the core base 4 is held by the claw 93 of the transfer means F, and the tension rod 50 of the tension means E is held by the claw 93 of the transfer means F.
While pulling the wire upward with the toroidal core 1 so that its tip faces the core hole of the toroidal core 1, the tension of the wire 6 is loosened while vacuum suction is applied from below the toroidal core 1 with the pulling means D, and the claw 93 is opened to allow the wire 6 to The tip is pulled out below the toroidal core 1 through the core hole 2. Then, as shown in FIG. 23, after the claw 93 has retreated and moved, the cylinder 115 of the upper guide means J is actuated to advance the line guides 110, 113 and the guide claws 112, 114, and the line guide 1
The wire rod 6 is inserted between the guide claws 10 and 113 and the guide claws 112 and 114. At the same time, the guide plate 103 of the lower guide means H also moves forward, and the groove 102 engages with the wire rod 6. When the tip of the wire 6 is further clamped by the claws 93 of the transfer means, the tension rod 50 descends and then retreats to release the tension on the wire 6. Next, as shown in FIG. 24, when the claw 93 moves while pulling out the wire 6, the tension rod 50 enters into the path of the wire 6, as in the previous embodiment.
As shown in FIG. 25, the wire rod 6 is pulled out from the core hole 2. Then, the line guides 110, 113 and the guide claws 112, 114 open and retreat, and the guide plate 103 also retreats. In this state, the wire 6 is pulled into the toroidal core 1 by the claw 93 and the tension rod 50.
move it above. Then, the pulse motor 97 is rotated to move the toroidal core 1 by the diameter of the wire 6.

Thereafter, by repeating the above operations, toroidal coils aligned and fed to the toroidal core 1 are formed.

Incidentally, the upper guide means J is designed to sandwich the wire rod 6 with a slight gap so that the wire rod 6 can be moved easily.

As described above, according to the present invention, a certain length of a wire cut to a predetermined length is fixed in a predetermined position, and the other end is held so that the tip faces the core hole of the toroidal core, and vacuum suction is performed. Since the wire is pulled out by pulling out the wire, the wire can be repeatedly passed through the minute core hole without getting caught as it is guided by the flow of air that is gently sucked toward the core hole created by vacuum suction. , it is possible to realize highly reliable automatic winding of toroidal cores. Furthermore, since the path of the wire is regulated, it is possible to form a toroidal coil wound in alignment.

[Brief explanation of the drawing]

Fig. 1 is a front view of a magnetic head showing an example of a toroidal core to which the present invention is applied, Fig. 2 is a side view of Fig. 1, and Fig. 3 is a perspective view of a winding device showing an embodiment of the present invention. Fig. 4 is a perspective view of the toroidal core, Fig. 5 is an enlarged perspective view of the holding means, Fig. 6 is a side partial sectional view of the pull-out means, Fig. 7 is a side sectional view of the tensioning means, and Fig. 8 is a side sectional view of the tensioning means. 9 is a side sectional view of the gripper, FIGS. 10 to 18 are perspective views showing the winding process, and FIG. 19 is a winding device showing another embodiment of the present invention. Perspective view,
FIG. 20 is a perspective view of the holding means in FIG. 19;
FIG. 21 is a perspective view of the lower guide means, FIG. 22 is a perspective view of the upper guide means, and FIGS. 23 to 25 are perspective views showing the winding process. A, A'...winding device, B, B'...holding means,
C...Fixing means, D...Drawing means, E...Tension means, F...Transfer means, G...Gripper, H
... lower guide means, J ... upper guide means.

Claims (1)

[Claims] 1. Hold the other end of a wire that has been cut to a predetermined length and has one end fixed in a predetermined position, and place the tip of the other end of the held wire on the front side of the toroidal core. With the other end facing the core hole so that it is almost parallel to the axis of the core hole, the tip of the other end is vacuumed by a nozzle placed opposite the wire on the rear side of the toroidal core. After pulling it out to the rear side of the toroidal core through the core hole while suctioning,
The method is characterized in that the tip of the drawn wire is held and transferred toward the front side of the toroidal core, tension is applied to the wire, the wire is drawn out from the core hole, and the wire is wound around the toroidal core to form a toroidal coil. How to wind a toroidal coil. 2. A holding means for holding the toroidal core so that the axis of the core hole is parallel to the wire supply direction, a fixing means for fixing one end of the wire cut to a predetermined length, and a , the tip of the wire that is slidably arranged in the axial direction of the core hole and faces the core hole is vacuum-suctioned from the core hole by a nozzle that is arranged opposite to the wire on the rear side of the toroidal core. A gripper including a pull-out means for pulling out and a pair of claws for holding the tip of the wire so as to be slidable in a direction perpendicular to the axis of the core hole is directed from the rear side of the toroidal core to the front side. After the tip of the wire pulled out to the rear side of the toroidal core is held in a pair of claws, the gripper is moved to the front side of the toroidal core, and the tip of the held wire is pulled into the core of the toroidal core. 1. A toroidal coil winding device comprising: a means for transporting a wire so as to face the hole; and a tension means applying a predetermined tension to the wire transported by the transport means. 3. A holding means that holds the toroidal core and moves the toroidal core in a direction perpendicular to the axis of the core hole, and a holding means that is arranged below this holding means and that crosses the path of the wire drawn out from the core hole. a lower guide means which is slidably supported as shown in FIG. An upper guide means configured to regulate the path of the wire rod is provided to restrict the path of the wire rod wound around the toroidal core, thereby making it possible to wind coils with a predetermined distribution around the toroidal core. A toroidal coil winding device according to claim 2.