JPH10208420A - Magnetic-head loading mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic-head loading mechanism by which a magnetic disk is replaced smoothly, whose maintenance and inspection operation is performed easily, in which magnetic heads are replaced easily and in which the respective magnetic heads can be loaded surely by a method wherein the magnetic heads can be changed over between a retreated state and an access state. SOLUTION: When both magnetic heads 2(A), 2(B) are loaded, both adaptors 71(A), 71(B) in a retreated state are turned at right angles in respectively opposite directions by a manual operation so as to be changed over to a brought- close state. Then, in the access state, both arms 3 are made parallel to each other in the same directions, both magnetic heads 2(A), 2(B) are brought respectively close to the faces of a magnetic disk 1, both rollers 714, 714 are brought respectively into contact with slopes on both side faces of a raising and lowering block 731, and both magnetic heads can be loaded. At this time, the rear end of a push rod 73 is pressed by, e.g. an automatic control mechanism so as to be pressed down, the raising and lowering block 731 is raised up to a position indicated by a dotted line, and both magnetic heads 2(A), 2(B) can be loaded respectively on both faces of the disk 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mechanism for loading a magnetic head on a magnetic disk in an inspection apparatus.

[0002]

2. Description of the Related Art After a hard magnetic disk constituting a disk drive is manufactured, a defect of the magnetic medium is inspected by an inspection apparatus in a single state. In the inspection, a magnetic head is loaded on a magnetic disk by a loading mechanism, and writing and reading of test data are performed. The loading mechanism of the disk drive includes a linear system and an in-line system, and recently the in-line system is exclusively used. Therefore, the loading mechanism of the inspection apparatus is also the in-line system.

FIG. 2 shows an example of an in-line loading mechanism. The magnetic heads 2 (A) and 2 (B) for the front and back surfaces of the magnetic disk 1
3 is fixed to the tip. Since the loading operations of the two magnetic heads 2 (A) and 2 (B) are the same, both will be described together. The rear end of the support arm 3 is detachably fixed to a fixture 41 of the rotation mechanism 4, and the support arm 3 rotates in the direction of arrow R from the retracted position indicated by the dotted line by the rotation of the motor 42,
The magnetic head 2 moves over the surface of the magnetic disk 1.
The fixing tool 41 is provided with a loading arm 5 and its pin 51 presses the bottom surface of the support arm 3 upward. When the pin 51 is lowered, the magnetic head 2 is lowered and the first track of the magnetic disk 1 is moved. loaded with check is made to T _R1. When the inspection is completed, the process _proceeds to the next track T _R2 , the inspection is performed, and this is repeated until the last track T _Rn . After the inspection is completed, the pin 51 is raised to unload the magnetic head 2.

In recent disk drives, the magnetic disk and the magnetic head 2 are both miniaturized, and the distance between a plurality of magnetic disks is reduced.
Connect the pin 51 of the loading arm 5 to the support arm 3
And the surface of the magnetic disk 1 cannot be provided. On the other hand, there has been proposed a rotation type loading mechanism which can be applied to both the disk drive and the inspection apparatus, and Japanese Patent Application Laid-Open No. 4-295678 "Head loading mechanism" has been applied for a patent. The embodiment will be described with reference to FIG. In FIG. 3, the loading mechanism 6
A rotating plate 61 for fixing the support arm 3 is provided for the fixing tool 41 of the rotating mechanism 4 shown in FIG. 2, and the rotating shaft 62 and the fixing tool 41 are connected by a connecting arm 63. The drive arm 64 corresponding to 5 includes the fixing tool 41 and the rotating plate.
Provided between 61. When the tip of the drive arm 64 rises, the rotating plate 61 rotates about the rotating shaft 62, the supporting arm 3 descends, and the magnetic head 2 is loaded.

[0005]

The loading mechanism shown in FIG. 3 is preferably used for an inspection apparatus in principle as a rotation system. However, in the inspection apparatus, the magnetic disk is replaced by an automatic transport mechanism every inspection. Further, since maintenance and inspection of the loading mechanism and replacement of the magnetic head 3 are often required, a mechanism that facilitates or facilitates these is desirable. The present invention has been made in view of the above, and it is an object of the present invention to provide a rotation type loading mechanism that facilitates replacement of a magnetic disk and that facilitates maintenance and inspection of the mechanism and replacement of a magnetic head 3.

[0006]

According to the present invention, there is provided a magnetic head loading mechanism which solves the above-mentioned problems, and in which the support arms of both magnetic heads on the front and rear surfaces of a magnetic disk are fixed to be freely detachable. Two adapters and both adapters are mounted, and by right-angle rotation in opposite directions, the two support arms fixed to these are made parallel to each other in the same direction, and both magnetic heads are brought close to both surfaces of the magnetic disk, Or an adapter mounting frame capable of switching both magnetic heads to the retracted state with both support arms aligned in a direction opposite to each other, rollers provided on both adapters, slopes respectively contacting both rollers, and both rollers rising by ascending The distance between the adapters is reduced, and both adapters brought close to each other are slightly rotated to move both magnetic heads Lifting block loading on both sides of the disc, and is biased by a axially supported by a spring in the adapter mounting frame, pressure rod to raise the lifting block attached to the distal end by 按下 the rear end, and the constructed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the above-mentioned loading mechanism, the support arms of the respective magnetic heads on both sides of the magnetic disk are detachably fixed to the two adapters. When the two adapters mounted on the adapter mounting frame are brought into an approaching state, the two support arms fixed thereto become parallel to each other in the same direction, and each magnetic head approaches each side of the magnetic disk. In this approaching state, when the rear end of the pressing rod pivotally supported by the adapter mounting frame is descended against the urging force of the spring, the lifting block attached to the tip of the pressing rod rises, and both ends contacting both slopes thereof. The distance between the rollers is reduced, and the two adapters brought into the close state are slightly rotated to load each magnetic head on both surfaces of the magnetic disk.

When the two adapters in the approaching state are rotated at a right angle, the adapter enters the retreat state. In this retracted state, the two support arms are aligned in the opposite direction and the two magnetic heads are evacuated from the magnetic disk, so that the magnetic disk can be exchanged smoothly, and the maintenance and inspection of the mechanism and the replacement of the magnetic head can be performed. Can be easily performed.

[0009]

1 shows the configuration of a loading mechanism 7 according to an embodiment of the present invention. FIG. 1A shows a retracted state of the magnetic head 2, and FIG. In FIG. 1A, the loading mechanism 7 includes two adapters 71 (A) and 71 (B), one adapter mounting frame 72 and a pressing rod 73, and two head position adjusting mechanisms 74 (A). ), 74 (B). The adapter mounting frame 72 is fixed to an appropriate portion of the carriage mechanism 8 by a mounting tool 81. Both adapters 71
(A) and 71 (B) are composed of a mounting block 711, a head fixing member 713 mounted on the mounting block 711 with an adjusting spacer 712 therebetween so as to be able to rotate minutely, and a roller 714. Adjustment spacer 71
Numeral 2 adjusts the height of the magnetic head 2 with respect to the disk 1 according to various thicknesses of the magnetic disk 1. Both mounting blocks 711 can be rotated at right angles and the adapter mounting frame
Attached to 72. The magnetic head 2 (A) for the surface of the magnetic disk 1 is attached to the head fixture 713 of the adapter 71 (A).
The magnetic head 2 (B) with respect to the back surface is fixed to the head fixture 713 of the adapter 71 (B) so that it can be freely attached and detached. In this retracted state, the support arms 3, 3 of the two magnetic heads 2 (A), 2 (B) are aligned with each other in a direction opposite to each other and retracted from the magnetic disk 1, as shown in FIG. In addition, operations such as maintenance and inspection / repair of each part of the mechanism and replacement of the magnetic head 2 can be easily performed.

The pressing rod 73 is pivotally supported at the position shown in the drawing of the adapter mounting frame 72, and an elevating block 731 formed with inclined surfaces on both sides is attached to the end thereof. Pressure rod 73 is urged by a spring S _P, the retracted state lifting block 731
Is falling. Both heads position adjustment mechanism 74 (A), 74 (B)
Is the shaft 741 and cylinder type bearing 742, knob
743, both shafts 741 and 741
3,713, and make small rotations around them. The right-angle rotation of both adapters 71 (A) and 71 (B) is manually performed about these rotation axes. Each knob
By operating 743, both magnetic heads 2 (A) and 2 (B) are aligned in the front-back direction.

In loading the two magnetic heads 2 (A), 2 (B), the adapters 71 (A), 71 in the retracted state described above are loaded.
(B) is rotated manually at right angles in opposite directions to switch to the approaching state shown in (b). When approaching,
The two support arms 3 and 3 are parallel to each other in the same direction so that the two magnetic heads 2 (A) and 2 (B) approach both surfaces of the magnetic disk 1, respectively. 714 and 741 come into contact with each other to enable loading. Here, when the rear end of the pressing rod 73 is pressed and lowered by, for example, an automatic control mechanism, the lifting block 731 rises to the position shown by the dotted line, and the interval between the rollers 714, 714 in contact with the slope decreases. , Both head fixtures 713,713
Are slightly rotated (Δθ), and both magnetic heads 2 (A),
2 (B) are loaded on both sides of the disc 1, respectively.

[0012]

As described above, according to the loading mechanism of the present invention, the magnetic head can be switched between the retracted state and the approached state. In the retracted state, the magnetic disk can be exchanged smoothly, and the mechanism can be inspected and inspected. The magnetic head can be easily replaced, and the magnetic heads can be surely loaded on both sides of the magnetic disk in an approaching state, and there is a large factor contributing to the improvement of the operation efficiency of the magnetic disk inspection apparatus.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a loading mechanism according to an embodiment of the present invention, where (a) is a retracted state of a magnetic head,
(b) shows the approach state.

FIG. 2 is a configuration diagram of an in-line loading mechanism.

FIG. 3 is a configuration diagram of a conventional loading mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Magnetic disk, 2 ... Magnetic head, 3 ... Support arm,
4 rotating mechanism, 41 fixing fixture, 5 loading arm,
51 ... pin, 6 ... conventional loading mechanism, 61 ... rotating plate,
62 ... rotating shaft, 63 ... connecting arm, 7 ... loading mechanism of the present invention, 71 ... adapter, 711, ... mounting block, 712 ...
Adjustment spacer, 713… Head fixtures 713, 714… Roller, 72… Adapter mounting frame, 73… Pressing rod, 731… Elevating block, 74… Head position adjustment mechanism, 741… Shaft, 742… Bearing, 743… knob

Claims (1)

[Claims] In a magnetic disk inspection apparatus for inspecting a magnetic disk by loading a magnetic head onto both surfaces of a front surface and a rear surface of the magnetic disk by a carriage mechanism, the support arms of the two magnetic heads are fixed in a detachable manner. The two adapters and the two adapters are mounted, and the fixed support arms are made parallel to each other in the same direction by the right-angle rotation in the opposite directions to bring both the magnetic heads closer to both surfaces of the magnetic disk. Or an adapter mounting frame capable of switching the two magnetic heads to the retracted state by aligning the two support arms in opposite directions, a roller provided on each of the adapters, and a slope contacting the rollers. The distance between the two rollers is reduced by ascending, and the two adapters brought into the close state are minutely rotated. An elevating block for loading both magnetic heads on the both surfaces, and a pressing rod which is pivotally supported by the adapter mounting frame and urged by a spring to raise the elevating block attached to the front end by lowering the rear end. , And characterized by,
Loading mechanism for magnetic head.