JPH02119111A - Wire winding machine for magnetic head - Google Patents

Abstract

PURPOSE:To improve the efficiency of wire winding by a small winding machine by a method wherein a pair of a pushing-in apparatus and a leading-out apparatus are respectively arranged on both sides of a retaining stand, the pushing-in apparatus on one side is moved forward, a wire is pushed in a wire winding hole, the other tip is led out by the leading-out apparatus, and the tip of the wire is passed to the other pushing-in apparatus. CONSTITUTION:A magnetic core 2 is vertically retained on a retaining stand 10 of a winding machine, so as to be capable of free rotation in a horizontal plane. A pushing-in apparatus 50 is arranged so as to be capable of free reciprocating transfer with respect to the retaining stand 10. The pushing-in apparatus 50 advances while confining a wire, and inserts the wire tip in the wire winding hole of the core 2. A guide dice 29 arranged between the pushing-in apparatus 50 and the retaining stand 10 guides the wire tip to the wire winding hole. A wire leading-out apparatus 80 is arranged on the opposite side of the pushing-in apparatus 50 with respect to the retaining stand 10. A pair of the pushing-in apparatus 50 and the leading-out apparatus 80 are installed on both sides with respect to the retaining stand 10, thereby making a winding machine small-sized, and improving the wire winding efficiency of the magnetic head.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to, for example, a video tape recorder (■Tfl).
The present invention relates to a winding machine for automatically winding a wire into a minute winding hole in a magnetic core used in a magnetic head.

[Prior Art] FIG. 17 shows an example of a magnetic head 1 for a VTR, in which a magnetic core 2 in which a pair of half cores 2a and 2b are joined is fixed to the top of a base plate 3, and the half cores 2a, 2b are fixed to the top of a base plate 3.
A wire 5 is wound around the winding hole 4 formed between the wires. In this magnetic core 2, the winding hole 4 is set to be close to the gap 6 and its size is small, thereby improving the magnetic properties.

As a result, the winding hole 4 is located above the winding portion 7 on the side surface of the magnetic head l, and the winding is inclined downward toward the outside as shown in FIG.

The magnetic head l described above has become smaller and smaller as the density of information recording increases, and in recent years, 0.35X0
．． It is required to wind a wire of O, OImmφ approximately 5 to 10 times in the 3 mm diameter winding hole 6. This type of work is very precise and has traditionally been done by hand, but it requires skill and is inefficient, so mechanization has recently been attempted, and various devices have been proposed.

One example is the one described in JP-A-61-259515, which includes a rotatable core holding means for holding the core in a predetermined position, and a wire insertion means for inserting the wire into the winding hole of the core. The device is configured to include a means for chucking the wire and pulling it out from the winding hole, and a winding means for winding the drawn wire around the outside of the core.

The above-mentioned winding means is such that a rotating chuck having an opening/closing claw is installed on a rotating arm which can be rotated around a core holding means so as to be slidable along the rotating arm, and the wire is pulled out from the winding hole. The wire is configured to be wound around the core by rotating the rotating arm while holding one end of the wire by the rotating chuck.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional technology, since it is necessary to rotate the rotating arm each time winding is performed, winding takes time and efficiency is insufficient. There was a problem to be solved.

In addition, in such a winding device, a presser claw that can be opened and closed is provided to hold the wire in the wound state after winding, but the abutting part at the tip of this claw cannot sufficiently hold the wire. However, there were also problems such as the wire unwinding.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides, in its first claim, a holding stand that rotatably holds the magnetic core in an upright state in a horizontal plane; , a pushing device that is installed to move forward and backward with respect to the holding table and pushes the tip of the wire into the winding hole of the magnetic core by moving forward while gripping the wire, and a pushing device that is installed between this pushing device and the holding table. A magnetic head winding machine comprising a guide member for guiding the tip of the wire to the winding hole, and a wire pull-out device installed on the opposite side of the push-in device with respect to the holder, the push-in device and A pair of pull-out devices are provided on both sides of the holding base.

Further, a second claim of the present invention provides that the holding stand is provided with a wire clamp that comes into contact with the side surface of the magnetic core to prevent the wire wound around the magnetic core from loosening, and that the wire clamp can be moved toward and away from the magnetic core; A flexible wire holding member is attached to the abutting end of the wire clamp.

[Function] In the winding machine having the above configuration, the pushing device on one side is advanced to guide the wire tip through the guide member to the winding hole, and the pushing device is further advanced to push the wire into the winding hole. ,
After pulling out the tip with the other pulling device, turn the holder half a turn and the wire will be half wrapped around the half core. Here, the tip of the wire is transferred to the pushing device on the other side, the pushing device is moved forward, and when the pulling device on one side is pulled out, the wire is wound once around the half core.

By repeating this one after another, a large number of windings are completed.

In the above process, the winding is done by rotating the holding base, so the winding can be done quickly.

- Once wound, the wire is tightened by a pushing device or a pulling device, but when it is loosened, it is held down by a wire clamp with a flexible member attached to the tip, so that the tightening does not loosen.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the configuration (only the right half) of the magnetic head winding machine of the present invention, in which a holding stand 10 that holds a magnetic core is placed in the center of a base 8 that extends from side to side, and a holding stand 10 that holds a magnetic core from above to the rear. Wire guide device 20° A pushing device 50 for pushing the wire 7 into the winding hole 6 on both sides of the holding base 10, and a pulling device 80 for grasping and pulling out the wire 7 inserted through the winding hole 6 are arranged in sequence on both sides thereof. .

FIG. 2 shows a holding base 10, which is provided with a fixing part 12 for holding the base plate 5 upright on a table 11 that can be raised and lowered and rotated in a horizontal plane, and further fixes the base plate 5. A clamp 13 is provided, and a pressing device 15 is provided for contacting the base plate 3 and eliminating looseness. In addition, 14
is a wire clamp that presses the side surface of the core in order to prevent the wire during winding from heating up, and a wire holding member 14a made of flexible material such as silicone rubber is attached to the tip of the metal wire. It is configured to be opened and closed by a drive mechanism (not shown).

FIG. 3 shows the wire guide device 20. As shown in FIG. This wire guide device 20 includes a first mounting plate 23 that is attached to a support plate 21 erected at the rear of the center of the winding machine via a slide mechanism 22 so as to be able to rise and fall freely, and a first mounting plate 23 that is attached to the first mounting plate 23. The second mounting plate 25 is attached via a slide mechanism 24 so as to be able to move back and forth, and a guide die holding member 26 is attached to the curved end of the second mounting plate 25 so as to hang down. This guide die holding member 26 consists of a cylindrical part 27 supported vertically and rotatably in a horizontal plane by a bearing at the tip of the second mounting plate 25, and a holding part 28 at the lower end of the cylindrical part 27. A guide die 29 is mounted eccentrically with respect to the center of rotation of the cylindrical portion 27. A timing pulley 30 is provided in the cylindrical portion 27.
is attached, and this timing pulley 30 is connected via a timing belt 33 to a gear 32 rotated by a position switching cylinder 31 provided on the rear end side of the second mounting plate 25. 31, the cylindrical portion 27 is reversed and the position of the guide die 29 is switched to a position symmetrical with respect to the magnetic core 4. The vertical and longitudinal sliding mechanisms 2224 each include a sliding plate 34.35, a driving cylinder 36.37, and a positioning stopper (not shown).
It consists of Also, L at the tip of the second mounting plate 25
A cylinder 41 for opening and closing the die is installed in the metal fitting 40,
The operating end of the clamp 41 is inserted through the cylindrical portion 27 and connected to an opening/closing mechanism (not shown) for the guide die 29, and the guide die 29 is opened/closed by the operation of the die opening/closing cylinder 29. There is. Guide dice 2
9 is placed in front of the magnetic core 1 and the wire 7 is wound through the winding hole 6.
A pair of flat plates 29a made of a carbide material are pin-connected to the holding part 28 at their upper ends so that they can be opened and closed freely. (see Figure 12) is formed.

A base plate 46 is installed on the base 8 and is supported via a slide mechanism 45 so as to be movable left and right.
It is moved from side to side by a drive mechanism 49 equipped with a drive motor 47 and a speed reducer 48 installed at the end of the frame. A pushing device 50 and a pulling device 80 are provided on this base plate 46.

As shown in FIGS. 4 to 7, the pushing device 50 includes a first substrate 52 installed on a base plate 46, and a second substrate 54 that is raised and lowered by a sill 53 installed on the first substrate 52. And this second bracket [54 curved end bearing 5]
a support cylinder 56 rotatably supported in a horizontal plane by 5;
A push-in portion 57 is attached to the lower end of the support cylinder 56, and the upper surface of the second substrate 54 is provided with the support cylinder
A stepping motor 60 is connected via a timing belt 59 to a timing pulley 58 fixed to the outer periphery of the motor 6.
is installed. The pushing part 57 is connected to the support cylinder 56.
A hand guide 62 and a hand clamp 63 are provided on a frame body 61 attached to the lower end of the frame, and a pair of blade-like bodies 64 and 65 are respectively pivotally attached to the base part 66 and 69 at the upper end so that they can be opened and closed. There is. A guide hole 67 is formed in the base 66 of the hand guide 62, and a guide bar 68 installed in the frame 61 is inserted through the guide hole 67 and is slidably attached. On the other hand, a base 69 of the hand clamp 63 is fixed to the frame 61, and a spring 70 is attached between the base 69 of the hand clamp 63 and the hunt clamp 63 so as to bias the hand clamp 63 in a direction away from each other. The hand guide 62 is for guiding the wire 7, and its blade-shaped body 64 has a concave portion 71 on one side and a convex portion 72 on the other side in plan view, as shown in FIG. They are shaped to fit into each other. In addition, in its cross section, there is a V-shaped groove 7 in the center of its thickness.
3 is formed, and this V-shaped groove 73 is set to a size such that a hole large enough to insert the wire 7 is formed in the center with the concave portion 71 and the convex portion 72 engaged with each other. The hand clamp 63 clamps the wire 7, and grips the wire 7 with a constant force in a state where the double-edged members 65 are engaged with each other. Therefore, the blade-shaped body 64
．． When the wire is sandwiched between the wires 65 and the drive motor 47 is activated to advance the pushing device 50 toward the holding table 10, the hand guide 62 pushes against a stopper (not shown) provided on the wire guide device 20.
After that, only the hand clamp 63 is allowed to move, and the wire 7 is pushed out from the V-shaped groove 73 of the hand guide. The academic member 74 fixed to the tip of the second board 54 is provided with a hand opening/closing cylinder 75 for opening and closing the hand guide 62 and the hand clamp 63.

The drawing device 80 has a holding base 1 on the base plate 46.
A jig cylinder 80a is provided on the base plate 46 to move the drawer device board 82 onto the holding base 10. It is designed to push out toward the target. The pull-out device 80 includes a box-shaped suction unit main body 85 that is installed to be movable left and right with respect to the pull-out device board 82 via a guide mechanism including a suction device 83 and a tension hand 84, and this suction unit main body. 85 and a suction nozzle 86 provided extending from the suction nozzle 85 toward the holding table 10 side, and a nozzle cylinder 87 installed at the end of the drawer device board 82 at the end of the suction bow body 85.
The rod end portions of the suction section body 85 are connected to each other so that the suction section main body 85 can be moved from side to side. The suction nozzle 86 is connected to a suction pump (not shown), and a taper 88 is formed at the base end of the suction nozzle 86 so as to become wider toward the suction section main body 85 side. On both sides of the suction nozzle 86 on the extraction device board 82, a pair of arms 89 are attached at their base ends by pins 90 so as to be rotatable in a horizontal plane, and their tips are positioned facing the tip of the suction nozzle 86. The tension hands 84 are formed by pushing against each other. A spring member 89a is provided between the arms 89 for biasing them in a direction to butt each other, and the spring member 89a is parallel to the taper 88 of the suction nozzle 86 toward the suction nozzle 86 of each arm 89. A slope 9l is formed in the suction nozzle 8 by the operation of the nozzle cylinder 87.
When the arm 6 advances, the taper 88 and the slope 9l engage with each other, and the arm 89 is expanded against the bias of the spring member.

As shown in FIG. 9, the suction nozzle 86 is made by pressing a slightly inner side of the tip of a small diameter pipe 92 from above and below with a plate-shaped jig to form a flat trumpet portion 93 on the opening side and a suppressor. The cross section is formed into a slit 94 that spreads laterally. The positional relationship between the slit 94, the V-shaped groove 73, and the winding hole 4 is as shown in FIG. At the same time, the wire 5 approaches the target position in the left-right direction while being guided by the slope of the V-shaped groove 73.

In addition, as shown in FIG. 11, there are two
Two wire holding devices 100 and 110 are installed. The lth wire holding device l00 has a horizontal drive shaft +0
1 and arm portions 102 on both sides thereof, the wire holding arm 103 is provided with the arm portions 102 symmetrically positioned on both sides of the holding table IO. And the drive shaft! 0
A drive device (not shown) for rotating the wire 5 and a stopper (not shown) for determining the lowering position of the arm 102 are attached. The wire 5 is held down and wound around the magnetic core 2 in an inclined state with respect to the horizontal.

Further, the second wire holding device 1 1 1 0 is attached to one side of the holding table 10 by the first wire holding device lOO.
installed closer to the drive shaft ill as shown.
and an arm 112 at its end. As will be described later, this second wire holding device 110 is used to wrap the wire between both half cores 2a and 2b when the work is transferred from one half core 2a to the other half core 2b.
If the crossover wire 5a (see Fig. 18) that connects the windings is located in the winding hole 4, it will obstruct the subsequent winding work, so the crossover wire 5a should be placed at the lower end of the winding hole 1. It's for positioning.

In addition to the above-mentioned devices, this winding machine also includes a wire feeding device, a device that cuts the wire to an appropriate length, a device that replaces the wound magnetic core with a new magnetic core, and other accessories. equipment is provided.

Hereinafter, the process of winding the wire using the winding machine configured as described above will be explained with reference to FIG. 14, which is not shown in FIG.

In order to simplify the explanation, the process of supplying the wire 5 and starting winding will be omitted, and the explanation will start from the state where the wire 5 starts winding around one half core 2a from above the winding hole 4 and is wound several times. .

The wound wire 5 is held down by a wire clamp 14 on the side surface of the magnetic core 2, so that even if the wire 5 becomes loose, the winding will not loosen.

Then, in a state in which the tip of the wire 5 is gripped by the pushing device 50, the guide die 29 is placed on standby above between the base plate 3 and the pushing device 50 in the guiding device 20.

After the pushing device 50 retreats, the elevating drive cylinder 36 of the guide device 20 is operated to lower the guide die holding member 26 and stop at a predetermined position (see FIG. 12(a)). In the pushing device 50, the hand guide 62 is directed toward the holding table 10, and the hand clamp 63 is on standby holding the wire 5 at a predetermined distance behind it, and in this state, the drive motor 47 is activated. The pushing part 57 moves forward toward the holding table IO (see the figure (opening)). When the pushing part 57 further advances, the movement of the hand guide 62 is restricted by the stopper provided on the wire guide device 20, and only the hand clamp 63 moves forward to push the wire 5 through the V-shaped groove 73 of the hand guide 62. This allows the tip of the wire to pass through the tapered hole 42 of the guide die 29 into the fine hole 4.
3, passes through the guide hole 44, and projects from the winding hole 4 of the magnetic core 2 to the other side.

On the other side of the magnetic core 2, a pull-out device 80 is waiting in a predetermined state. That is, the drawer base plate 82' is advanced by the operation of the drive motor 47 (jig cylinder 80a), and the suction unit main body 85 is further advanced by the nozzle cylinder 87, and the tapered part 8 of the suction nozzle 86 is moved forward.
8 engages with the slope 9l of the arm 89 of the tension hand 84, and the arm 89 is pushed out to the left and right, and the suction nozzle 8
The tip of 6 faces the magnetic core 2 (see Figure 13).
b) see). Then, the extruded wire 5 is sucked by the suction nozzle 86 and drawn inward from the slit tube 94 (see FIG. 12 (portion) (c)). In this state, the nozzle cylinder 87 is contracted, the arm 89 is closed, and the wire 5 is gripped (see FIGS. 12(2) and 13).
(See figure (mouth)). The wire 5 is held at a constant position in the vertical direction by the suction nozzle 86, and is gripped by the arm 89, which closes equally from the left and right sides while being suctioned and tensioned, so that its position is always maintained constant. dripping

After that, in the wire guide device 20 and the pushing device 5o,
The guide die 29 and the hand guide 6 are operated by operating the die opening/closing nolinda 4l and the hunt opening/closing cylinder 75, respectively.
2 and hand clamp 63, and lift cylinder 36.
．． 53 to release it upward (see Figure 12 (e))
.

At this time, the side surface of the magnetic core 2 is held down by the wire clamp l4, and the holding stand 10 is tilted approximately 45 degrees so that the side where the wire 5 is held down is away from the side (first
(See Figure 3 (c) and Figures 1 and 1 (a)). In this state, the pull-out device board 82 is retreated and the wire 5 is pulled out from the winding hole 4, and a certain tension is applied to the wire 5. It is wound around one surface of the magnetic core 2 (see FIG. 13 (2)).

In this process, since the magnetic core 2 is inclined, the wire 5 is bent to form an obtuse angle at the corner of the winding hole 4.
Therefore, the wire 5 moves smoothly at the corner of the winding hole 4 of the magnetic core 2, the wire 5 is sufficiently tightened, and the wire 5 is prevented from rubbing at the corner of the winding hole 4 and breaking. .

The wire clamp 14 is released with the wire 5 under tension, and the drive shaft of the first wire holding device lOO! 01 is rotated, the arm portion 102 is lowered to a predetermined position, and holds the wire 5 from above as shown in FIGS. Let me do it (see Figure 13 (E) and (E))
. Thereby, the wire 5 is wound on the surface of the magnetic core 2 at an angle so that the outside is lower. At this time, the magnetic core 2 is sequentially tilted while the wire 5 is kept under tension, so that the wire 5 is sufficiently tightened in the same manner as described above. When the magnetic core 2 returns to the standard position, the wire 5 is wound once, and the wire clamp 14 is closed and the wound wire 5h (fixed to the side of the magnetic core 2).

When one winding process is completed as described above, the next winding is performed using the push-in device 50 and the pull-out device 80 on the side different from the previous one. That is, in a state where the left drawing device 80 is retracted in FIGS. 12 to 14, the pushing part 57 of the left pushing device 50 is brought close to the drawing device 80 side with each blade-shaped body 64, 65 open. , lowered. By closing the blade 6465, the wire 5 is guided by the hand guide 62 and grasped by the hand clamp 63 (
(See Figure 14(d)). Next, the stepping motor 60 of the pushing device 50 is operated to reverse the pushing part 57, so that the hand guide 62 and the tip of the wire 5 are directed toward the holding table 10 (see FIG. 14(E)). At this point, the position switching cylinder 31 of the wire guide device 20 is actuated to reverse the holding part 28, and the position of the guide die 29 is moved to the left and then lowered to be located on the left side of the magnetic core 2.

The drive motor 47 is operated and the pushing device 50 is moved toward the holding table IO. Thereafter, the above-described process is repeated to apply the next winding.

The winding on the magnetic core 2 starts from the upper end of the winding hole 4 of one half core 2a and moves sequentially to the lower end, but as mentioned above, during the winding process, the magnetic core 2 is sufficiently tightened and the wire is If the tension of 5 is controlled to an appropriate value, the winding positions will be shifted sequentially without changing the pushing position of the wire 5, and the winding will be performed without overlapping the wires 5 and leaving no gaps between them. Ru.

After one half core 2a of the magnetic core 2 is wound a predetermined number of times from top to bottom, the other half core 2b
The winding is done from bottom to top. At this time, the 16th
As shown in the figure, after the pulling device 80 grips the tip of the wire 5 pushed in from one side, the second wire holding device 110 is activated, and the arm portion 112 descends from above to direct the wire 5 downward. The half core 2a is pressed down, and in this state, the wire 5 is pulled out using the drawing device 80.

The crossover wire 5a that transitions between the wires 2b and 2b is positioned at the lower end of the winding hole 4. This prevents the crossover wire 5a from interfering with the newly pushed wire 5 in the subsequent winding process.

[Effects of the Invention] As described in detail above, the invention of the first claim includes a holding stand that rotatably holds the magnetic core in an upright state in a horizontal plane, and a holding stand that can freely move forward and backward with respect to the holding stand. a pushing device that is installed and advances to push the wire into the winding hole of the magnetic core; a guide member that is installed between the pushing device and the holding stand to guide the wire to the winding hole; and a pushing device for the holding stand. A winding machine for a magnetic head is equipped with a pull-out device installed on the opposite side of the winding hole to grip and pull out the tip of the wire inserted through the winding hole. With this configuration, the pushing device on one side is advanced to push the wire into the winding hole, and the tip of the wire is pulled out by the pull-out device on the other side, and then the holding base is turned half a turn, and the tip of the wire is pushed into the winding hole on the other side. Switch to the push-in device on the side and move the push-in device forward, pull it out with the pull-out device on one side, and turn the holding base another half turn while holding it. The wire will be wrapped around the half core once, and by repeating this sequentially, Since winding is performed by rotating the holding base, winding can be done more quickly than in the conventional case where the arm that grips the wire is rotated around the holding base, and the drive mechanism is small. The device can also be made smaller.

Further, the invention of claim 2 provides a wire clamp that can be freely opened and closed with respect to the magnetic core by abutting against the side surface of the magnetic core to prevent the wire from loosening, on the holding stand, and the tip of the wire clamp is provided with flexibility. By attaching the wire holding member, there is no loosening of the winding when changing the wire, and the above-mentioned process can proceed smoothly.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a perspective view of the holding table, Fig. 3 is a perspective view of the guide device, Fig. 4 is a perspective view of the pushing device and the pulling device, and Fig. 5 is a front view of the pushing device,
FIG. 6 is a side view of the pushing device, FIG. 7 is a sectional view of the hand clamp, and FIG. 8 is a perspective view showing the blade of the hand guide.
Figure 9 is a perspective view of the tip of the suction nozzle, Figure 1O is a diagram showing the positional relationship between the slit part of the suction nozzle, the 7-shaped groove of the hand guide, and the winding hole of the magnetic core, and Figure 11 is a perspective view of the wire holding device. Figures 12 to 14 are schematic diagrams showing the process of winding the wire, Figures 15 and 16 are perspective views showing the action of the wire presser, Figure 17 is a perspective view of the magnetic head, and Figure 18. is a perspective view of a magnetic core. ...Magnetic core, 4...Winding hole, 5...
Wire, 0... Holding stand, 14... Wire clamp, 4a... Wire holding member, 9... Guide die (guide member), 0...・
... Pushing device, 80... Pulling device.

Claims (2)

[Claims] (1) A holding stand that holds the magnetic core in an upright position and rotatable in a horizontal plane, and a holding stand that is installed so that it can move forward and backward with respect to this holding stand, and by moving forward while gripping the wire, the tip of the wire is magnetized. A pushing device that pushes the wire into the winding hole of the core, a guide member installed between the pushing device and the holding stand to guide the tip of the wire to the winding hole, and a guide member installed on the opposite side of the pushing device with respect to the holding stand. 1. A winding machine for a magnetic head comprising a wire drawing device, characterized in that a pair of the pushing device and the drawing device are respectively provided on both sides of a holding table. (2) The holding table is provided with a wire clamp that comes into contact with the side surface of the magnetic core to prevent the wire wound around the magnetic core from becoming loose, and the wire clamp is movable toward and away from the magnetic core. 2. A winding machine for a magnetic head according to claim 1, wherein a flexible wire holding member is attached to the abutting end of the magnetic head.