JPH0629828Y2 - Gimbal / Core slider bonding jig - Google Patents

Description

[Detailed Description of the Invention] [Outline] A gimbal / core slider bonding jig used for bonding a gimbal and a core slider in a magnetic head assembly, in which two pins are sunk downward when the gimbal / core slider is taken out after bonding. In order to prevent deformation of the gimbal, the guide plate has a guide part for guiding the core slider and a guide pin for positioning the gimbal, and the core slider inserted in the guide part is used as a reference plane. A pressing unit for pressing and a bonding jig for mounting on the core slider and pressing the gimbal inserted in the guide pin from the upper portion to bond the gimbal and the gimbal to the gimbal at the time of removal after bonding the core slider to the gimbal. The guide pin is sunk downward so as to release the engagement.

[Industrial application field]

The present invention relates to a gimbal / core slider bonding jig used for bonding a gimbal of a magnetic head assembly to a core slider.

The magnetic disk device includes, for example, a spindle 2 rotated by a motor 1 as shown in FIG. 3, a plurality of disk discs 3 mounted on the spindle 2, and an arm 5 mounted on a rotary actuator 4 for driving a head. And the arm 5
A pressure spring 7 fixed to the pressure spring 7 via a spacer 6 and a core slider 9 fixed to the pressure spring 7 via a gimbal (not shown). In addition, 10 is an apparatus base, 11 is a rotating shaft, and the arm 5 is rotated.

The core slider 9 is provided with a magnetic head, which is floated by high-speed rotation of the disk disc 3 and is held with a minute gap. Therefore, if the position of the gimbal to which the core slider 9 is fixed is bad, the flying characteristics (flying balance) of the head deteriorate, and the head crash easily occurs. Therefore, in order to accurately position and bond the core slider 9 to the gimbal, an adhesive jig is required.

[Conventional technology]

4 (a) shows the details of the holding portion of the core slider 9 in FIG. 3, and FIG. 4 (b) is a perspective view of the core slider 9 and FIG.
4C is a plan view of the gimbal 8, and FIG. 4D is a sectional view taken along the line AA of FIG.

As shown in FIG. 4B, the core slider 9 has a taper 15 at the front end for inflowing air, a magnetic head 14 at the rear end, and levitation rails 16 on both sides. Also, gimbal (thickness 30 to 50 μm) 8
4 has a shape as shown in FIG. 4C, has a hole 16 and a square hole 17, and further has a cutout portion (shaded portion in the drawing) 18 to which the core slider 9 is bonded, and the core slider 9 in the cutout portion 18. Dowel to pressurize
There is 19. There is a step of adhering and integrally forming the gimbal 8 and the core slider 9.

In this bonding step, as shown in FIG. 5 (a) and (b), the guide plate 12 of the jig is provided with the guide portion 13 and the guide pin 13a, and the core slider 9 is inserted into the guide portion 13 for positioning. And guide pins on the holes 16 and square holes 17 of the gimbal 8
13a is inserted and piled up, and it is pressed from the top and glued to give specified dimensions. The guide pin 13a of the bonding jig is
It is fixed to the upper guide plate 12 and the notch (hatched portion) 18 of the gimbal 8 is previously coated with an adhesive for bonding the core slider 9.

[Problems to be solved by the invention]

The guide pin 13a of the bonding jig is fixed to the guide plate 12, and after the core slider 9 and the gimbal 8 are bonded,
When holding the gimbal 8 in your hand and removing it from the jig, gimbal 8
When lifting the upper part of the gimbal 8 and the guide pin 13
Since there was little play in the diameter of a, the gimbal 8 was sometimes deformed because it could not be taken out smoothly. Therefore, Fig. 4
Bending angle Θ of (d) changes, dowel 19 floats, gimbal 8
However, there is a problem in that the flying characteristics (floating balance) are adversely affected.

Therefore, it is an object of the present invention to prevent the gimbal from being deformed by allowing the two pins to sink downward when the gimbal core slider is taken out after being bonded.

[Means for solving problems]

The above-mentioned problems are, as shown in the principle diagrams of FIGS. 1 (a) and 1 (b), the guide portion 12 on which the core slider 9 is positioned on the guide plate 12 on the base 20, and the guide for guiding and positioning the gimbal 8. The guide pin 13 'is provided with a pin 13', and the gimbal 8 is attached to the core slider 9 after the guide pin 13 'is taken out.
This is solved by the gimbal / core slider bonding jig of the present invention, which is structured so as to be depressed downward so as to release the engagement with.

[Action]

That is, a guide pin 13 'for guiding and positioning the gimbal 8
However, since it has a structure in which it is not fixed to the guide plate 12 and sinks downward, after the gimbal 8 and the core slider 9 are adhered, the guide pin 13 'is sunk when taking out to release the engagement with the holes 16 and 17 of the gimbal 8. To do. As a result, the jig can be taken out smoothly and the gimbal 8 is not deformed.

〔Example〕

2 (a) to (c) are views for explaining one embodiment of the present invention.
(A) is a plan view, (B) is a side view, and (C) is a front view. The same reference numerals denote the same objects throughout the drawings.

In the figure, reference numeral 12 is a guide plate fixed on a base 20, and a guide portion into which a core is inserted in the guide plate 12.
13 and a guide pin 1 to be inserted and positioned in the gimbal hole
There is 3 '. The guide pin 13 ′ is in contact with a screw 21 provided on the base 20 and has a structure in which the guide pin 13 ′ sinks in the guide plate 12 by the rotation of the screw 21. Reference numeral 22 denotes a push rod on the guide plate 12, which has a spring 24 which constantly exerts an extension force, and the guide portion is operated by operating a retaining ring 23 engaged with the push rod 22.
Put the core slider inserted in 13 on the reference side. Reference numeral 25 is an upper plate (a tip has a shape that allows the dowel 19 to escape).
25 is movable by engaging guide rod A and guide rod B,
This is a mechanism in which the notch of the gimbal set on the guide plate 12 is pressure-bonded by the pressure of 26 and the pressure is released by rotating the stop plate 27. 28 is a pick.

When the core slider 9 shown in FIG. 4 (b) and the gimbal 8 shown in FIG. 4 (c) are bonded together, an adhesive is applied in advance to the notch 18 (core slider bonding surface) of the gimbal 8 to fix the jig. Guide part 13
Insert the core slider 9 into the base, press it against the reference surface with the push rod 22, insert the holes 16 and 17 of the gimbal 8 into the guide pin 13 and position it, and press the notch 18 of the gimbal 8 from above with the upper plate 25 (spring). 26 pressure) and glue.

When removing from the jig after bonding, turn the screw 21 and gimbal 8
The guide pin 13 ', which is engaged with, is sunk into the guide plate 12. Since the holes 16 and 17 of the gimbal 8 are not restricted by the guide pins and 13 ', they can be smoothly taken out from the jig and the gimbal 8 is not deformed. Therefore, the floating of the dowel and the defect of the gimbal bending are eliminated, and the floating characteristic is stabilized.

[Advantages of the Invention] As described above, according to the present invention, the guide pin for positioning the adhesive is sunk downward,
The removal from the jig becomes smooth, the dowel floating, gimbal deformation and the like as in the past are prevented, and the floating characteristics can be improved.

[Brief description of drawings]

1 (a) and (b) are principle diagrams of the present invention, FIGS. 2 (a) to (c) are diagrams for explaining an embodiment of the present invention, and FIG. 3 is a schematic diagram of a magnetic disk device, 4A to 4D are views for explaining the magnetic head assembly, and FIGS. 5A and 5B are explanatory views of the conventional gimbal / core slider bonding jig. In the figure, 8 is a gimbal, 9 is a core slider, 12 is a guide plate, 13 'is a guide pin, 19 is a dowel, 20 is a base, 21 is a screw, 22 is a push rod, 23 is a retaining ring, 24 and 26 are springs, 25 is an upper plate, 27 is a stop plate, and 28 is a knob.

Claims (1)

[Scope of utility model registration request] 1. A guide plate (12) having a guide portion (13) for guiding the core slider (9) and a guide pin (13 ') for positioning the gimbal (8), and further the guide portion (13). Pressing means for pressing the core slider (9) inserted into the reference surface to the reference surface, and the guide pin (13 ') on the core slider (9)
A gimbal (8) inserted into the gimbal (8) is adhered by pressing the gimbal (8) from above, and when the gimbal (8) and the core slider (9) are taken out after adhering, A gimbal / core slider bonding jig having a structure in which the guide pin (13 ') is sunk downward so as to release the engagement.