JP3303028B2 - Disk storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk storage device for storing a polished disk in a wet state in a manufacturing process of a magnetic disk, an optical disk or the like until the disk is passed to a cleaning step. Things.

[0002]

2. Description of the Related Art A magnetic disk such as a hard disk, which is a familiar storage medium for a computer, is formed by processing a material such as a metal plate such as aluminum, a glass plate, or a carbon plate into a disk shape (hereinafter, referred to as a disk). It is manufactured by forming a magnetic recording layer on both sides.
This manufacturing process includes a cleaning step of cleaning the disc whose front and rear surfaces have been polished.

In this cleaning step, in order to form the magnetic recording layer without hindrance, in the polishing step, foreign substances such as abrasive powder and dirt such as oil film adhered to the front and back surfaces of the disk are removed, and the disk is cleaned. Operation has been performed.
If any foreign matter or dirt adheres to the surface of the disk, the formation of a smooth magnetic recording layer is hindered, and as a result, writing and reading of information is greatly affected. Thus, keeping the disk in a clean state is very important for improving the quality of the magnetic disk as a recording medium.

As a cleaning method in the cleaning step, direct cleaning with a brush is generally adopted, and a rotating brush provided with a sponge cleaning section around a shaft is rotated in a state in which the rotating brush is in contact with the side surface of the disk. At the same time, the disk is rotated in the circumferential direction, and cleaning water is further supplied to the rotating disk, so that the entire surface of the disk is completely washed.

By the way, if the polished disk is left as it is, the polishing liquid used at the time of polishing remains on the surface of the disk and dries, or the polishing powder covered with the polishing liquid is deposited on the disk. It may stick.

[0006] Such foreign matter such as stains of the polishing liquid and adhered polishing powder may not be removed even by the rotating brush, and if they remain without being removed, they hinder the formation of a smooth magnetic recording layer. As a result, it is expected that writing and reading of information will be greatly affected.

Therefore, the conventional disk cleaning apparatus is provided with a water tank for storing the polished disk in a wet state until the disk is passed to the cleaning step. This water tank is filled with storage water, and the polished disks are stored in a special cassette or the like, then placed in a water tank, and immersed in the storage water to keep the disks in a wet state. It has become.

[0008]

In a conventional disk storage device attached to a disk cleaning device, a mechanism for raising and lowering a cassette storing the disk or a table on which the cassette is mounted is required. It has been a problem that the disk cleaning device becomes complicated and large.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and simplifies the configuration of a storage device for storing a polished disk in a wet state to reduce the size of a disk cleaning device including the storage device. It is intended for planning.

[0010]

As means for solving the above-mentioned problems, a disk-shaped storage device is supported in a suspended state from above and is provided with a disk-shaped portion on which disks to be cleaned are placed. In addition, it is effective to provide a water tank which is installed so as to be able to ascend and descend below the shelves with the storage water filled therein, and immerses the discs together with the shelves in the storage water when ascending.

In addition, a tubular portion whose height from the bottom of the water tank is set lower than the depth of the water tank is erected inside the water tank, and the shelf on which the disc is mounted overflows by being immersed. It is desirable to prevent the rise of the water level in the water tank by flowing the stored water from the opening at the upper end of the tubular portion.

It is desirable to provide a plurality of notches at the upper end of the tubular portion. As a result, the stored water overflowing from the water tank flows into the tubular portion little by little from the cutout portion, thereby preventing a sudden overflow of the stored water.

Further, the shelf is suspended so as to be able to turn horizontally,
By arranging a plurality of containers accommodating disks on the shelf at intervals in the turning direction, it is possible to place more disks on the shelf.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a disk storage device according to the present invention will be described with reference to FIGS. The disc cleaning device is a storage device for storing the disc, both sides of which have been polished, immersed in storage water in a state of being immersed in the storage water, a cleaning means for cleaning the disc taken out of the storage water, and a drying means for drying the disc after cleaning. And a storage means for storing the dried disk in a dedicated container and sealing the disk.

As shown in FIG. 1, the storage device includes a shelf 3 on which a disk D to be washed is mounted while being supported by being suspended from a top plate 2 of a base 1, and a storage device. A water tank 4 is provided so as to be able to ascend and descend below the shelf 3 with water, and to immerse the disk D in storage water together with the shelf 3 when it rises.

The top plate 2 is provided with a circular opening 5, and the shelf 3 is provided immediately below the opening 5. A ring plate 6 is arranged above the opening 5 so as to be aligned with the center of the opening 5. The ring plate 6 is rotatably supported in a horizontal plane by a plurality of support rollers 7 installed on the top plate 2. Have been. Ring plate 6
The ring plate 6 itself has a pulley shape by forming a groove 8 in the circumferential direction on the outer peripheral end surface of the servo motor 9 installed on the top plate 2 as shown in FIG. The ring plate 6 can be rotated by operating the servo motor 9 and stopped at a predetermined position.

As shown in FIG. 3, four shafts 11 extend downward from the ring plate 6, and the lower ends of the shafts 11 extend downward through the openings 5. A circular plate 12 is fixed to the lower end of the shaft 11 so as to coincide with the center of the ring plate 6, and a cassette (container) 13 for storing the disks D one by one on the plate 12.
Are detachably fixed. Four cassettes 13 are fixed on four sides of the plate 12, and each time the ring plate 6 is rotated by １ ／, one of the cassettes 13 is set at a predetermined position for receiving the disk D. I have.

The cassette 13 has a vertically set disk D
Are stored in a state where they are arranged in parallel with a slight space therebetween, and the disk D can be easily taken out by the transfer arm 14 installed above the base 1.

At the center of the plate 12 is a water tank 4 described later.
A circular opening 15 is formed around which the tubular portion is freely inserted.

The water tank 4 has a cylindrical shape with a bottom, and is installed so as to be centered on the plate 12. Inside the base 1, a partition plate 16 parallel to the top plate 2 is provided.
The water tank 4 is provided with an air cylinder 17 installed on the partition plate 16.
It is supported so that it can move up and down in the vertical direction. The air cylinder 17 has a cylinder 17b fixed to the partition plate 16 with the piston rod 17a directed upward, and a tip of the piston rod 17a fixed to the bottom of the water tank 4. Is raised and lowered in the vertical direction. Further, a guide cylinder 18 which is installed in parallel with the air cylinder 17 and regulates the moving direction of the water tank 4 is attached to the partition plate 16.

The movable range of the water tank 4 is set such that the shelf 3 is immersed in the storage water filled therein from the position where the upper end of the water tank 4 is at the same level as the plate 12 or slightly lower than the plate 12. Disk D stored in cassette 13
Are set up to the position where they are all submerged in the storage water.

At the center of the bottom inside the water tank 4, a tubular section 19 having a circular cross section is erected in the vertical direction. The height of the tubular section 19 from the bottom of the water tank 4 is slightly larger than the depth of the water tank 4. It is set low. The opening 20 formed at the upper end of the tubular portion 19 has a horizontal plane cross section, and a plurality of notches 21 are formed at the upper end of the tubular portion 19 forming the opening 20.
Are formed at intervals in the circumferential direction. Notch 2
1 has a shape cut into a V-shape from the upper end to the lower end of the tubular portion 19, and the lowermost part of the notch 21, which is the apex of the V-shape, is the water tank 4. Are provided at the same height from the bottom surface.

At the lower end and side surfaces of the tubular portion 19, there are no communication points for exchanging the stored water with the water tank 4, and the stored water is transferred between the water tank 4 and the outer surface of the tubular portion 19. It is filled in the space formed between them. In addition, the water level of the storage water is set slightly lower than the lowermost part of the notch 21 formed in the tubular part 19.

A process of storing a polished disk in storage water using the disk storage device configured as described above will be described. Disk D after polishing both sides
However, when the cassettes are arranged and stored in each cassette and placed on the shelf together with the cassettes, the air cylinder operates to raise the water tank filled with stored water. As the water tank rises, the shelf is immersed in the storage water. At this time, since the tubular portion is inserted through the opening formed in the plate, there is no possibility of preventing the shelf-shaped portion from being submerged.

As the shelf is immersed in the storage water and submerged, the level of the storage water in the water tank gradually rises, and the storage water starts to overflow in the water tank. However, when the water level of the stored water reaches the lowermost part of the notch formed in the tubular portion, the stored water flows into the tubular portion from this portion,
Even if the tank rises, the level of the stored water in the tank does not rise any more.

At this time, the stored water flows from the plurality of notches provided at the upper end of the tubular portion almost simultaneously toward the inside of the tubular portion, so that the stored water does not suddenly overflow.

The water tank stops at the position where it has risen to the highest position,
At this position, the disk on the shelf is completely immersed in the storage water, and awaiting the next washing step in this state.

The disk stored in the water tank is taken out of the storage water by the transfer arm and passed to the cleaning means. At this time, when the cassette set at the predetermined position becomes empty, the servomotor is operated to rotate the ring plate and the plate fixed thereto 1/4 turn so that the adjacent cassette is at the predetermined position. It moves and the disc is subsequently ejected. When the removal of the disks from all the four cassettes placed on the plate is completed in this manner, the same disk removal operation is performed on the water tanks having the same structure arranged in parallel.

According to the disk storage device configured as described above, the water tank is installed so as to be able to move up and down, and the shelf on which the cassette is mounted is provided with only the cassette switching mechanism. Can be simplified, whereby the size of the disk cleaning device including the storage device can be reduced.

Since the stored water flows into the inside of the tubular portion almost simultaneously from the plurality of cutouts, the stored water does not suddenly flow into the inside of the tubular portion, and the condition of the stored water in the water tank is moderated. Can be kept.

The overflow of the storage water can be prevented by flowing the storage water overflowing due to the immersion of the shelf on which the disk is placed from the opening at the upper end.

[0032]

As described above, according to the disk storage device of the present invention, the shelf-like portion on which the disk to be washed is supported while being suspended from above and the storage water is stored therein. A water tank that is installed so as to be able to ascend and descend below the shelves and that immerses the discs in the storage water together with the shelves when the cassettes are raised. Since a mechanism for elevating and lowering the placed table is not required, the configuration of the storage device can be simplified, and the size of the disk cleaning device including the storage device can be reduced.

In this disk storage device, a tubular portion is erected inside the water tank, and the height of the tubular portion from the bottom of the water tank is set lower than the depth of the water tank, so that the shelf on which the disk is placed is placed. The overflow of the preservation water can be prevented by flowing the preservation water overflowing by the immersion of the shape portion through the opening at the upper end.

Furthermore, by providing a plurality of notches at the upper end of the tubular portion, the stored water flows from the plurality of notches almost simultaneously toward the inside of the tubular portion. Without flowing into the inside, the state of the stored water in the water tank can be kept calm.

Further, the shelf is suspended so as to be able to turn horizontally,
By arranging a plurality of containers accommodating disks on the shelf at intervals in the turning direction, more disks can be placed in the limited space of the shelf, and moreover, the cleaning means The disc can be easily transported.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of a disk storage device according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Shelf part 4 Water tank 13 Cassette (container) 19 Tubular part 21 Notch D disk

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-13393 (JP, A) JP-A-5-143980 (JP, A) JP-A-5-143987 (JP, A) JP-A-5-13987 290373 (JP, A) JP-A-6-282883 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 5/84 G11B 7/26 G11B 23/50 B08B 3/04 H01L 21/304

Claims (4)

(57) [Claims] 1. A storage device for a disk for storing a polished disk in a state of being immersed in storage water, comprising: a shelf-like portion which is supported in a suspended state from above and on which the disk is placed; A storage tank for storing the storage water, wherein the storage tank is provided below the shelf and supported so as to be able to ascend and descend, and when raised, immerses the disk in the storage water together with the shelf. . 2. An upper end of the water tank, wherein the height from the bottom of the water tank is set lower than the depth of the water tank. The disk storage device according to claim 1, further comprising a tubular portion that flows from the disk. 3. The disk storage device according to claim 2, wherein a plurality of notches are provided at an upper end of the tubular portion. 4. The shelf-shaped part is suspended so as to be horizontally pivotable,
4. The disk storage device according to claim 1, wherein a plurality of containers accommodating the disks are arranged on the shelf-like portion at intervals in a turning direction.