JPH0753185Y2 - Magnetic disk inspection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a magnetic disk inspection apparatus, and more particularly to a magnetic disk inspection apparatus for inspecting electrical characteristics of a plurality of magnetic disks.

[Conventional technology]

A conventional magnetic disk device holds a spindle for holding and rotating a plurality of magnetic disks, a positioner for moving a holder to which a plurality of magnetic heads are attached in the direction of the center of the magnetic disk, and a magnetic head group for the magnetic disk group. And a loader unit that collectively sets the load state and the unload state.

Next, a conventional magnetic disk inspection device will be described in detail with reference to the drawings.

FIG. 2 is a perspective view showing an example of a conventional magnetic disk inspection apparatus.

The magnetic disk inspection apparatus shown in FIG. 2 is an apparatus for collectively inspecting three magnetic disks 21a, 21b, 21c, and a spindle 2 for holding and rotating the magnetic disks 21a, 21b, 21c.
2 and holder 25 with magnetic heads 23a, 23b, 23c attached
Positioner that moves the motor with the control motor 26 that is the drive source
27 and the loader unit 3 that linearly moves the loader pins 28a, 28b, 28c arranged corresponding to the magnetic heads 23a, 23b, 23c.
Includes 2 and.

Next, the operation will be described.

Prior to the description of the operation, the state before the start of the apparatus (hereinafter referred to as the origin state) will be described.

The origin state of the spindle 22 is the magnetic disks 21a, 21b, 21c.
In a stationary state in which the magnetic heads 23a, 23b, and 23c are attached to the magnetic disk 21.
It is a position away from the outer periphery of a, 21b, 21c.

The origin state of the loader unit 31 is the loader pins 28a, 28
b and 28c move forward, and the leaf springs 24a of the magnetic heads 23a, 23b and 23c,
It is in a state of being inserted between 24a ', 24b, 24b', 24c and 24c '.

As for the operation of the inspection device, first, the spindle 22 is activated to rotate the magnetic disks 21a, 21b, 21c.

Then, the control motor 26 of the positioner 27 is operated to move the magnetic heads 23a, 23b, 23c onto the outer peripheral surfaces of the magnetic disks 21a, 21b, 21c, and then the operation of the control motor 26 is stopped.

Then, the air cylinder 30 of the loader unit 32 is moved backward to move the loader pins 28a, 28b, 28c to the leaf springs 24a, 2c.
Pull out from between 4a ', 24b, 24b', 24c, 24c '. At this time,
The magnetic heads 22a, 22b, 22c are composed of leaf springs 24a, 24a ', 24b, 24.
By the action of b ′, 24c, 24c ′, the magnetic disks 21a, 21b, 21c
The surface is loaded, that is, levitated.

The control motor 26 is activated again, and the magnetic heads 23a, 23b, 23
While moving c in the direction of the center of the magnetic disks 21a, 21b, and 21c, the magnetic heads 23a, 23b, and 23c work to move the magnetic disks 21a and 2c.
Inspect the electrical characteristics of 1b and 21c.

When the magnetic heads 23a, 23b, 23c reach the inspection innermost position of the magnetic disks 21a, 21b, 21c, the control motor 26 is rotated in the reverse direction, the magnetic heads 23a, 23b, 23c are retracted, and the positioner 2 is moved.
7. The loader unit 32 and the spindle 22 are reversely operated in the order up to the inspection described above to return to the origin state.

[Problems to be solved by the device]

The above-described conventional magnetic disk inspecting apparatus has a drawback in that each magnetic head cannot be loaded independently because the magnetic head group is collectively loaded when the magnetic head group is loaded.

Therefore, in any one of the magnetic disk groups, the magnetic head is loaded even if the magnetic head is loaded under an unsuitable condition due to adhesion of foreign matter or the like, so that the magnetic head is damaged. .

[Means for Solving the Problems]

In order to solve the above-mentioned problems, a magnetic disk inspection apparatus of the present invention comprises a spindle for holding and rotating a plurality of magnetic disks at a predetermined interval, and a pair of upper and lower parts corresponding to each of the plurality of magnetic disks. A plurality of magnetic heads, a positioner that is arranged on the outer periphery of the spindle and that moves forward and backward in the direction of the center of the magnetic disk using a control motor as a drive source, and the magnetic heads fixed to the positioner and each of the magnetic heads has a tip portion. A plurality of leaf springs having elasticity and a plurality of loads which are provided for each of the pair of leaf springs corresponding to the pair of upper and lower magnetic heads and can be freely inserted and removed between the pair of leaf springs. It is configured to include a pin and a plurality of air cylinders that individually and independently move the plurality of load pins.

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention.

The magnetic disk inspection apparatus shown in FIG.
a, 1b, 1c, spindle 2, magnetic heads 3a, 3b, 3c,
It is configured to include a holder 5, a positioner 7, and a loader unit 11.

The mounting intervals of the magnetic disks 1a, 1b, 1c, the magnetic heads 3a, 3b, 3c and the loader pins 8a, 8b, 8c are the same size A, and the magnetic heads 3a, 3b, 3c are the magnetic disks 1a, 1b, 1c. It is a position that is sandwiched at equal distance.

The loader pins 8a, 8b, 8c have a tapered conical shape, and are inserted between the leaf springs 4a, 4a ′, 4b ′, 4b ′, 4c, 4c ′ of the magnetic heads 3a, 3b, 3c and elastically contacted. However, in the state of this magnetic head group, the magnetic heads 3a, 3b, 3c are in a state of being separated from each surface of the magnetic disks 1a, 1b, 1c.

The loader unit 11 includes loader pins 8a, 8b, 8c, air cylinders 9a, 9b, 9c, and a mounting block 10.

Next, the operation will be described.

Prior to the description of the operation, the state before the start of the apparatus (hereinafter referred to as the origin state) will be described.

The origin state of the spindle 2 is a stationary state in which the magnetic disks 1a, 1b, 1c are held at intervals of a predetermined dimension A, and the positioner 7 has the magnetic heads 3a, 3b, 3c from the outer circumference of the magnetic disks 1a, 1b, 1c. It is a distant position. As for the origin state of the loader unit 11, the loader pins 8a, 8b, 8c have the leaf springs 4a, 4a ', 4b, 4c.
It is in a state of being inserted between b ', 4c and 4c'.

In the operation of the inspection device of the present invention, first, the spindle 2 is operated to rotate the magnetic disks 1a, 1b, 1c.

Then, the control motor 6 of the positioner 7 is operated to move the magnetic heads 3a, 3b, 3c onto the outer peripheral surfaces of the magnetic disks 1a, 1b, 1c, and then the operation of the control motor 6 is stopped.

Next, the air cylinders 9a, 9b, of the loader unit 11
9c is operated, the loader pins 8a, 8b, 8c are retracted, and the magnetic heads 3a, 3b, 3c are moved by the action of the leaf springs 4a, 4a ', 4b, 4b', 4c, 4c 'to the magnetic disks 1a, 1b, 1c. On each side of.
As a result of this operation, the magnetic heads 3a, 3b, 3c move their leaf springs 4a, 4b.
a ', 4b, 4b', 4c, 4c 'spring force and magnetic disk 1a, 1b, 1c
Due to the balance with the laminar air flow generated by the rotating action of the magnetic heads, the magnetic heads 3a, 3b, 3c are in a floating state with a slight gap from the surfaces of the magnetic disks 1a, 1b, 1c.

At this time, if one of the magnetic heads 3a, 3b, 3c is not loaded, the corresponding air cylinder is not operated.

Then, the control motor 6 is activated again, and the magnetic head 3
While moving a, 3b, 3c in the direction of the center of the magnetic disk 1a, 1b, 1c, the magnetic disks 1a, 1b, 1c
Inspect electrical characteristics of 1c.

When the magnetic heads 3a, 3b, 3c reach the inspection innermost position of the magnetic disks 1a, 1b, 1c, the control motor 6 is rotated in the reverse direction, the magnetic heads 3a, 3b, 3c are retracted, and the positioner 7, loader unit 11 and the spindle 2 are reversely operated in the order up to the inspection described above to return to the original state.

[Effect of device]

In the magnetic disk inspection apparatus of the present invention, instead of loading a group of magnetic heads at the same time at the same time, a magnetic head is provided so as to correspond to each magnetic head, and a mechanism for loading independently is provided, so that the magnetic heads can be loaded. The effect is that it can be loaded only on the required magnetic disk.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing a conventional example. 1a, 1b, 1c ... magnetic disk, 2 ... spindle, 3a, 3b, 3c
… Magnetic head, 6… Control motor, 7… Positioner, 8
a, 8b, 8c ... loader pin, 9a, 9b, 9c ... air cylinder, 1
1 ... loader unit.

Claims (1)

[Scope of utility model registration request] 1. A spindle for holding and rotating a plurality of magnetic disks at a predetermined interval, a plurality of magnetic heads arranged in a pair vertically corresponding to each of the plurality of magnetic disks, and an outer periphery of the spindle. A positioner that is arranged and moves back and forth in the direction of the center of the magnetic disk using a control motor as a drive source; a plurality of leaf springs that are fixed to the positioner and that have the magnetic heads provided at their tip ends and that have elasticity; A plurality of load pins that are provided for each of the pair of leaf springs corresponding to the pair of upper and lower magnetic heads and can be freely inserted and removed between the pair of leaf springs, and the plurality of load pins are independently advanced and retracted. A magnetic disk inspection apparatus comprising: a plurality of air cylinders to be moved.