JP2761232B2 - Apparatus and method for manufacturing magnetic head - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for manufacturing a magnetic head core used for manufacturing a magnetic head having a pair of adjacent magnetic head cores. The present invention relates to a technique capable of greatly simplifying a line stroke and improving the positioning accuracy of a magnetic head core.

[Prior Art] FIGS. 8 and 9 show a magnetic head used in a video tape recorder, in which a substantially square base plate 61 is provided on one side with a projection 63 having a slit 62 formed in the center. The magnetic head cores 64, 6
4 has a fixed structure. Such a magnetic head is attached to the end of a rotating arm provided inside a drum of a video tape recorder via an insertion hole 65 at the center of the base plate 61, and scans a magnetic tape wound around the drum to transmit and receive signals. It is supposed to do. The reason why two head cores 64 are attached to this type of magnetic head is to clarify an image during special reproduction. In such a magnetic head, if the levels of the tape sliding surfaces of the two head cores 64 do not exactly match, the two heads will not trace the same position on the tape,
Since the fidelity of the transmitted / received signal is reduced and the noise is increased, it is necessary to strictly adjust the levels of the sliding surfaces of both heads. For this purpose, conventionally, a jig for gripping the first and second head cores 64 in a state where the levels of the sliding surfaces are adjusted in advance is used, and an adhesive resin is applied while the head core 64 is gripped by the jigs. The two head cores 64 are fixed at the same time by pressing against the base plate 61.

[Problems to be Solved by the Invention] However, in the above-described conventional technology,
There was a problem to be solved that the winding process was very troublesome. That is, the two head cores 64 are fixed in parallel to the base plate 61, and the head cores 64 themselves are reduced in size and the mounting interval is narrowed in order to reduce the size of the device and improve the recording density. . The work of winding a small-diameter wire around the head core 64 having such a complicated and fine structure requires skill even when it is performed manually, and is inefficient. On the other hand, when the winding operation is mechanized, in a magnetic head in which one head core 64 is attached to the base plate 61, the base plate 61 is placed upright on a base rotating in a horizontal plane, and is placed in the winding hole. A device has been proposed in which a winding is applied by rotating a base while holding one end of an inserted wire (Japanese Patent Application No. 63-272116). In such a device, a quick and stable winding can be applied by rotating the head instead of the wire. However, the present invention is applied to a magnetic head in which two head cores are already fixed as in the present application. Doing so is difficult because the wire and the other head interfere.

The present invention can simplify the winding operation by applying the above-described winding machine between the mounting of the first magnetic head core and the mounting of the second magnetic head core. It is an object of the present invention to provide a magnetic head manufacturing apparatus and a manufacturing method capable of mounting a second magnetic head core on a magnetic head core with high positioning accuracy.

Means for Solving the Problems In order to solve the above problems, the present invention relates to a magnetic head manufacturing apparatus for attaching a pair of magnetic head cores to an end of a base plate, comprising a first head core An attachment device, a second head core attachment device, and a first head core winding device provided between the first head core attachment device and the second head core attachment device;
Supplies the adhesive resin around the contact portion of the first magnetic head core that is positioned and contacted with the end portion of the base plate and contacts the first magnetic head core with respect to the base plate. A winding device for the first magnetic head core, which has a resin coating device for adhering the two around the contact portion, and is used as a post-process of the first head core mounting process by the first head core mounting device, A base mounted on a base plate and rotating in a horizontal plane, and a gripper for gripping one end of a wire inserted into a winding hole of the first magnetic head core; The second head core mounting device used as a post-process of the first magnetic head core winding process by the device includes a temporary positioning device that performs temporary positioning of the second magnetic head core with respect to the base plate, A resin coating device for supplying a bonding resin around a contact portion of the first magnetic head core, which is provisionally positioned with respect to the end portion and in contact with the base plate, and And a resin adjusting device that hardens and fixes the resin in a state where the second magnetic head core is positioned by finely moving the resin and positioning the relative position with respect to the first magnetic head core. .

Next, the present invention is a magnetic head manufacturing apparatus for attaching a pair of magnetic head cores to an end portion of a base plate, comprising: a first head core attaching apparatus and a second head core attaching apparatus;
A first magnetic head core winding device provided between the first head core mounting device and the second head core mounting device, wherein the first head core mounting device mounts the first magnetic head core on a base plate A positioning device for positioning the first magnetic head core, a resin coating device for supplying a bonding resin to an intersection between an upper surface of the first magnetic head core and a lower end surface or a side end surface of the base plate, and the first magnetic head core. And a first resin curing device for curing and fixing the resin in a state, wherein the first magnetic head core is used as a post-process of a first head core mounting process by the first head core mounting device. The apparatus includes a base mounted with the base plate and rotating in a horizontal plane;
And a gripper for gripping one end of a wire inserted into the winding hole of the magnetic head core of the first embodiment, and is used as a post-process of the first magnetic head core winding process by the first magnetic head core winding device. The second head core mounting device includes:
A temporary positioning device for temporarily positioning the second magnetic head core with respect to the base plate; and a resin for supplying a bonding resin to an intersection between an upper surface of the second magnetic head core and a lower end surface or a side end surface of the base plate. A coating device, a position adjusting device for finely moving the second magnetic head core with respect to the base plate, and positioning the relative position with respect to the first magnetic head core, and curing the resin in a state where the second magnetic head core is positioned It is characterized by including a resin curing device for fixing by fixing.

Further, in the method of the present invention, in a method of manufacturing a magnetic head in which a pair of magnetic head cores each having a winding at an end of a base plate are formed, a step of positioning the first magnetic head core with respect to the base plate; Supplying a resin to the intersection between the upper surface of the magnetic head core and the lower end surface or side end surface of the base plate; curing and fixing the resin while the first magnetic head core is positioned; The base plate on which the magnetic head core is fixed is placed upright on a rotating base in a horizontal plane, and one end of the wire inserted into the winding hole is gripped, and the base is rotated to perform winding. A step of temporarily positioning the second magnetic head core with respect to the base plate, and a step of applying a resin to an intersection between the upper surface of the second magnetic head core and the lower end surface or side end surface of the base plate. And the second magnetic A step of finely moving the core with respect to the base plate to determine a position relative to the first magnetic head core; and a step of curing and fixing the resin while the second magnetic head core is positioned. Features.

[Operation] In such a magnetic head core mounting apparatus, the first
After the first head core is mounted on the base plate by the head core mounting device, the base plate is moved to a position facing the second head core mounting device by the transfer device, and the second head core is slightly moved by the second head core mounting device. The second head core is positioned with respect to the first head core so that the level shift of the sliding contact surface thereof falls within a predetermined reference range. The base plate is placed upright on a base rotating in a horizontal plane between the first head core mounting device and the second head core mounting device, and while holding one end of the wire inserted into the winding hole, the base plate is held. By providing a winding device for applying a winding by rotating the base, the winding of the first head core is wound without interfering with the second head core in a state where only one head core is mounted. Lines can be applied.

Also, when the base plate and the magnetic head core are fixed by supplying the adhesive resin to a portion around the contact portion of the magnetic head core positioned in contact with the base plate with the base plate, the contact portion between the base plate and the magnetic head core is fixed. Since the magnetic head core can be glued to the exact position in the thickness direction while keeping the two in contact without interrupting the adhesive resin,
The mounting accuracy of the magnetic head core to the base plate is improved. Therefore, the mounting position accuracy of the magnetic head core does not decrease due to the variation in the thickness of the adhesive layer.

Further, when the second magnetic head core is attached to the base plate, the adhesive resin is supplied to a part of the portion of the magnetic head core that has been brought into contact with the base plate and temporarily positioned around the base plate, and then the second magnetic head core is supplied. By finely moving the first magnetic head core, the second magnetic head core can be accurately positioned and fixed with respect to the first magnetic head core by hardening the adhesive resin.

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

FIG. 1 shows the overall configuration of a magnetic head core mounting device according to the present invention.
And a plate feeder 1 provided along the transfer device 2.
a, a first head core mounting device 3, a resin coating device 4 for applying a permanent fixing resin to the first head core temporarily fixed by the first head core mounting device 3, and a curing for curing the applied resin A device 5, a second head core mounting device 6, a position adjusting device 7 for positioning the second head core, a resin coating device 8, and a curing device 9 are sequentially provided. For convenience of description, the transfer direction of the transport line is defined as an X direction, a direction orthogonal to the horizontal plane is defined as a Y direction, and a vertical direction is defined as a Z direction.

The base plate 1 is placed on a carrier (jig) 10 as shown in FIGS. 2 and 3 and moves on the transport device 2. A fixed mechanism (not shown) provided therebetween is set to have a fixed posture and position with respect to the transport line. The carrier 10 includes a substrate 11, a guide member 12 erected on the substrate 11, and a lifting table 15 having a ridge 14 fitted in a guide groove 13 formed at an end of the guide member 12, This elevator 15
And a clamp 17 which is detachably provided by bolts to fix the base plate 1 and an elastic member 18 which is stretched between the elevating table 15 and the substrate 11 to bias the elevating table 15 toward the substrate 11. A head core base 20 for mounting the head core 19 is provided at a position facing the elevating table 15. At the top of the head core base 20, a suction hole 21 communicated with a vacuum suction device (not shown) is provided. The opening is formed.

The head core mounting devices 3 and 6 are provided with a stock section 22a for arranging and stocking a plurality of head cores, and transferring the head cores 19 paid out one by one from the stock section 22a toward a transport line to transfer the head cores 20 of the carrier 10 to each other. And a transfer unit 23 to be mounted on the storage device. Resin coating equipment 4,8
Has a resin ejection nozzle (not shown) projecting at a predetermined position on the transfer line, and an ultraviolet-curing resin (or instant adhesive) P is formed at the joint between the head core 19 and the base plate 1 temporarily fixed in advance. Is to supply. The resin curing devices 5 and 9 cure the resin supplied by the coating devices 4 and 8 in the previous process and fix the head core 19, and an ultraviolet irradiation device or the like is employed.

The position adjusting device 7 moves the head core table 20 on the transfer line.
The second head core mounted thereon is finely moved in the XY directions to perform positioning, and is configured as shown in FIGS. 6 and 7. That is, a ridge 32 extending in the vertical direction is formed on the front surface of a bracket 31 provided to be suspended from above at a position facing the transport line, and engages with the ridge 32 of the bracket 31 via a vertical groove 33. Support plate 34
A positioning device main body 36 provided with a ridge 35 extending in the Y direction and connected to the support plate 34;
A first slide member 38 slidable in the Y direction with a slide groove 37 engaged with the ridge 35, and a ridge 39 formed on the lower surface of the first slide member 38 so as to extend in the X direction. A second slide member 41 having a slide groove 40 to be engaged with, and a pusher (pressing piece) 42 attached to one end of the second slide member 41 are configured. Bracket 31 above
Are provided with upper and lower metal fittings 43, 44, and a direct-acting actuator is attached to the upper metal fitting 43, so that the position of the positioning device body 36 can be adjusted by moving it up and down. The lower bracket 44 has a positioning device main body 36 attached thereto.
A backup screw 47 is provided which abuts the lower surface of the main body to determine the position of the lower end of the main body. The positioning device 36 and the first slide member 38 each have a substantially L-shaped bracket.
The brackets 48 and 49 are provided with a screw 50 for moving in the X direction and a screw 51 for moving in the Y direction, respectively. And the second slide member 41. These moving screws 50 and 51 are provided with a first handle 50a and a second handle 50a having different screw feed pitches.
It has the same structure as the micrometer provided with b and 51b. A coil spring 52 for urging the positioning device body 36 and the first slide member 38 and an engaging portion of the first slide member 38 and the second slide member 41 in a direction away from each other is stretched. Return the moving screws 50 and 51 to the first position.
The slide member 38 or the second slide member 41 is a moving screw
It retreats following the tips of 50 and 51. The brackets 48, 49 are provided with backup screws 54, 55 for regulating the most retracted positions of the first slide member 38 and the second slide member 41. The pusher 42 is provided so as to extend from the lower surface of the second slide member 41, and a notch 56 having edges 56a and 56b along the XY direction is provided at a tip end thereof. 56a, 56
The head core 19 can be pushed by bringing the b into contact with the edge of the head core 19.

The transfer device 2 is a conveyor that intermittently moves the carrier 10 at a constant pitch, and stops in accordance with the position of each device.
A microscope 57 for enlarging and visually confirming the corresponding portions of the base plate 1 and the head core 19 is provided behind the position corresponding to. In this method, the first head core and the second head core are displayed on a screen (VDT) by removing an intermediate portion in the X direction and bringing them closer to each other. By adjusting the XY moving screw, fine positioning is performed. Can be performed visually.

Hereinafter, a process of mounting the head core by the magnetic head core mounting device configured as described above will be described.

First, the base plate 1 is sequentially sent from the base plate supply device 1a, and is fixed to the carrier 10 at the mounting position of the base plate of the transfer device 2. In other words, a mechanism for releasing the clamp 17 of the carrier 10 is provided at the mounting position of the base plate, whereby the base plate 1 at the end of the robot arm is held in the state where the clamp 17 is lifted. It is placed on the part 16 and the clamp 17 is lowered and fixed. Next, the carrier 10 is transferred to a position facing the first head core mounting device 3, and the head core 19 is supplied to the head core base 20 by the first head core mounting device 3. The head core 19 is transferred from the stock part 22a to the positioning part (positioning device) 22b, and after being positioned, is supplied onto the head core base 20 of the carrier 10 by the transfer part 23. The head core 19 is fixed on the head core base 20 by the negative pressure of the suction holes 21. In this state, the head core 20 and the base plate 1 are vertically shifted in height as shown in FIG. ing. Here, the lifting platform of carrier 10
15 is pressed down to press the base plate 1 against the head core 19, and the carrier 10 is further transferred to the resin application position by the transfer device 2, where the resin P is supplied to the connection portion between the base plate 1 and the head core 19. The resin P is not supplied between the surfaces of the base plate 1 and the head core 19, but as shown in FIG.
Is supplied to the intersection between the upper surface of the base plate 1 and the lower end surface or the side end surface of the base plate 1, so that the resin layer hardly enters between the base plate 1 and the surface of the head core 19. Therefore, when compared with the case where the adhesive layer is sandwiched between the base plate 1 and the magnetic head core 19, in the bonding method as in this example, the pair of left and right magnetic head cores 19 attached to the base plate 1 Even if the thickness of the resin layer to be fixed fluctuates, the possibility that the magnetic head core 19 shifts in the Z direction (in the thickness direction of the magnetic head core 19) is reduced. Therefore, the mounting accuracy of the magnetic head core 19 can be improved in both the surface direction of the base plate 1 and the thickness direction of the magnetic head core 19. The base plate 1 and the head core 19 to which the resin P has been applied as described above are further moved in front of the resin curing device 5, and are cured and fixed by, for example, irradiating the resin P with ultraviolet rays.

Next, the carrier 10 is moved along the transport line to the front of the second head core mounting device 6, where the stock unit 22 is moved.
The second head core 19 is supplied from a through the transfer section 23 onto the head core base 20, and is temporarily fixed by the negative pressure of the suction hole 21. Here, although the position of the second magnetic head core 19 is substantially constant, the already fixed first head core 19 is fixed.
There is a relative slight deviation from. In this state,
The carrier 10 is transferred to the front of the resin coating device 8 and coated with the resin in the same manner as the first head core. Next, carrier 10
Is transported by the transport device 2 and moves in front of the position adjusting device 7. In the position adjusting device 7, the second slide member 41
The pusher 42 attached to the lower end of the carrier 10 is positioned so as to be slightly above the upper surface of the head core base 20 of the carrier 10, and the operator can handle the screws 50a, 50b of the X-direction movement screw 50 and the Y-direction movement screw 51. , 51a, 51b, the pusher 42 is moved in a plane,
As shown in FIG. 4, it is adjusted to the side surface of the head core.
The operator observes the microscope and further handles
By rotating 50a, 50b, 51a, 51b, the position is adjusted so that the relative positional relationship between the first head core 19 and the second head core 19 becomes uniform. At this time, since the second head core 19 is temporarily fixed by being pressed by the base plate 1 on the head core base 20, the pusher 42 presses two sides to freely move relative to the head core base 20. Moving. When positioning the head core 19, the head core 19 cannot be moved in the direction of being pulled back by the pusher 42, but since the movement of the pusher 42 is performed at a very low speed, it is inevitable for the actual positioning operation. In such a position, the carrier 10 is moved and fixed in front of the curing device.

In the above description, the step of winding is omitted, but after mounting the first head core, winding of the first head core is performed by an appropriate method. That is, the base plate 1 itself or the carrier 10 is removed from the transfer device 2 and attached to a winding machine to perform winding. When a winding machine is used, as described above, since only one magnetic head core is fixed, a device that winds a wire by rotating the base plate 1 itself without interference between the wire and another head core is used. It can be used and greatly simplifies the operation compared to when both head cores are both mounted.

[Effects of the Invention] As described above in detail, according to the present invention, a winding device is provided between a first head core mounting device and a second head core mounting device, and the first magnetic head is mounted on the first head core mounting device. A resin coating device is provided for supplying a bonding resin around the contact portion of the head core with the base plate, so that the resin is provided between the first magnetic head core and the base plate at the contact portion of the first magnetic head core with the base plate. The first magnetic head core can be bonded to the base plate without any intervening layers.

By being able to adhere in this manner, the thickness variation of the resin layer that fixes the magnetic head cores in the pair of magnetic head cores attached to the base plate, as compared to the case where the adhesive layer is sandwiched between the base plate and the magnetic head cores , The possibility that the magnetic head core is displaced in the thickness direction is reduced. Therefore, the mounting accuracy in the thickness direction of the magnetic head core when the pair of magnetic head cores is mounted on the base plate can be improved.

Next, a base plate is mounted between the first head core mounting device and the second head core mounting device, and a base that rotates in a horizontal plane and a wire inserted into the winding hole of the first magnetic head core are mounted on the base. Since a winding machine having a gripper for gripping one end is provided, it is easier to wind the first magnetic head core than when a pair of magnetic head cores are mounted on a base plate and then individually wound. Lines can be applied.

Furthermore, after a temporary positioning of the second magnetic head core with respect to the base plate, a bonding resin is supplied to a second head core mounting device provided after the winding device around the contact portion of the first magnetic head core with respect to the base plate. A resin coating device,
A position adjusting device for finely adjusting the second magnetic head core;
Since a resin curing device for curing the resin after the position adjustment is provided, similarly to the case of mounting the first magnetic head core, the second magnetic head core and the base plate are not interposed with a resin layer. The second magnetic head core can be bonded to the base plate, and the position of the second magnetic head core is adjusted before the bonding resin is cured to accurately position the second magnetic head core with respect to the first magnetic head core. Can be glued.

Therefore, according to the present invention, the mounting accuracy of the magnetic head core can be improved in both the thickness direction of the magnetic head core and the surface direction of the base plate.

[Brief description of the drawings]

FIG. 1 is a plan view showing an entire embodiment of a magnetic head core mounting apparatus according to the present invention, FIG. 2 is a plan view of a carrier, FIG. 3 is a side view of the carrier, and FIG. FIG. 5 is a side view showing a resin coating step, FIG. 6 is a side view of a position adjusting device, FIG. 7 is a front view of the same, FIG. 8 and FIG. FIG. DESCRIPTION OF SYMBOLS 1 ... Base plate, 2 ... Conveying device, 3 ... First head core attaching device, 4 ... First resin coating device, 5 ... Resin curing device, 6 ... Second head core attaching device, 7 ... Second head core position adjusting device, 8... Second resin coating device,
9: Resin curing device, 19: Magnetic head core, 22b ...
Positioning unit (positioning device).

Claims (3)

(57) [Claims] 1. A magnetic head manufacturing apparatus for mounting a pair of magnetic head cores to an end of a base plate, comprising: a first head core mounting apparatus, a second head core mounting apparatus, and a first head core mounting apparatus. A first magnetic head core winding device provided between the first head core mounting device and the second head core mounting device, wherein the first head core mounting device is positioned and contacted with an end of the base plate. A resin application device for supplying a bonding resin around a contact portion of the first magnetic head core with the base plate and bonding the two around the contact portion of the first magnetic head core with the base plate; The winding device for the first magnetic head core used as a post-process of the first head core mounting process by the head core mounting device includes a base mounted with the base plate and rotated in a horizontal plane; A gripping portion for gripping one end of a wire inserted into a winding hole of the magnetic head core, wherein the first magnetic head core is used as a subsequent process of a winding process of the first magnetic head core by a winding device of the first magnetic head core. Second
The head core mounting device includes: a temporary positioning device that temporarily positions the second magnetic head core with respect to the base plate; and a base plate of the first magnetic head core that is temporarily positioned and contacted with an end of the base plate. A resin coating device for supplying a bonding resin around a contact portion with the first magnetic head core;
An apparatus for manufacturing a magnetic head, comprising: a position adjusting device for positioning a relative position with respect to a magnetic head core of the above; and a resin hardening device for hardening and fixing the resin while the second magnetic head core is positioned. 2. A magnetic head manufacturing apparatus for mounting a pair of magnetic magnetic head cores on an end of a base plate, comprising: a first head core mounting apparatus and a second head core mounting apparatus;
A first magnetic head core winding device provided between a first head core mounting device and a second head core mounting device, wherein the first head core mounting device mounts the first magnetic head core on a base plate A positioning device for positioning the first magnetic head core, a resin coating device for supplying a bonding resin to an intersection between an upper surface of the first magnetic head core and a lower end surface or a side end surface of the base plate, and the first magnetic head core. A first resin curing device that cures and fixes the resin in a state, wherein the first magnetic head core is used as a post-process of a first head core mounting process by the first head core mounting device. The apparatus has a base mounted with the base plate, which rotates in a horizontal plane, and a gripper for gripping one end of a wire inserted into a winding hole of the first magnetic head core, wherein the first magnetic H The second magnetic head core used as a post-process of the winding process of the first magnetic head core by the core winding device.
The head core mounting device includes: a temporary positioning device for temporarily positioning the second magnetic head core with respect to the base plate; and a bonding device for bonding at the intersection of the upper surface of the second magnetic head core and the lower end surface or side end surface of the base plate. And a second magnetic head core that is slightly moved relative to the base plate,
Manufacturing a magnetic head comprising: a position adjusting device for positioning a relative position with respect to the magnetic head core; and a second resin curing device for curing and fixing the resin while the second magnetic head core is positioned. apparatus. 3. A method for manufacturing a magnetic head in which a pair of magnetic head cores each having a winding at an end of a base plate are formed, wherein: a step of positioning the first magnetic head core with respect to the base plate; A step of applying an adhesive resin to an intersection between an upper surface of the magnetic head core and a lower end surface or a side end surface of the base plate; a step of curing and fixing the resin while the first magnetic head core is positioned; The base plate on which the first magnetic head core is fixed is placed upright on a base rotating in a horizontal plane, and the base is rotated while holding one end of the wire inserted into the winding hole, thereby forming a winding. Performing temporary positioning for temporarily positioning the second magnetic head core with respect to the base plate; and bonding at a crossing portion between the upper surface of the second magnetic head core and the lower end surface or side end surface of the base plate. The process of applying resin A second magnetic head core by fine movement relative to the base plate, the first
A step of positioning a relative position with respect to the magnetic head core, and a step of curing and fixing the resin while the second magnetic head core is positioned.