JPS6253313B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for polishing both sides of a magnetic disk, such as a floppy disk.

In recent years, floppy disks and the like (for example, Mylar magnetic disks) have been increasingly used as recording media for microcomputers.

This floppy disk (hereinafter simply referred to as a disk) has a center hole with an inner diameter of 28 mm when the diameter is 130 mm, for example, so it is manufactured by polishing both surfaces within a radius of 26 mm to 58 mm.

The quality of this polishing process affects not only the performance of the disk itself but also the head.

In this type of prior art, polishing is carried out by contacting one side of a rotating disk with the folded abrasive portion of an abrasive tape that is continuously transferred.

However, this conventional technique is inefficient because it polishes one side at a time, and because the contact position between the polishing tape and the disk is fixed, scratches are likely to occur due to polishing in the same path. In particular, since the abrasive grains and other dust that have fallen off from the abrasive tape remain attached to the disk during the polishing process, the above-mentioned scratches and defects in the polished surface are likely to occur.

The present invention aims to eliminate these inconveniences, and its feature is that both sides of one side of a rotating disk are clamped by the double-folded abrasive portions of a pair of abrasive tapes that are continuously transported. At the same time, both folded abrasive sections are laterally moved to polish both sides of the disk, and the other side of the disk is clamped by the folded dust removal sections of a pair of continuously transported dust removal tapes to polish both sides of the disk. This is a double-sided polishing method for a magnetic disk, which is characterized by removing fallen abrasive grains and the like.

In the following, the device of the invention will be described with reference to the accompanying drawings showing an embodiment thereof.

This device consists of a pair of abrasive tapes 2a that are continuously transported on one side of a rotating disk 1;
The folded abrasive parts 3a, 3b of 2b are arranged facing each other, and on the other side, a pair of dust removal tapes 4a, 4 are continuously transferred.
The folded dust removal parts 5a and 5b of b are arranged oppositely, and
The double-folded polishing parts 3a, 3b and the double-folded dust removal part 5
A double-sided polishing device for a magnetic disk, characterized in that a and 5b are provided so as to be movable in contact with and away from the disk 1, and further provided so as to be movable laterally with respect to both folded abrasive parts 3a and 3b and the disk 1. It is.

Further, examples will be specifically explained.

FIG. 1 is a plan view of the main part, FIG. 2 is a perspective view of the main part, FIG. 3 is a side view of the abrasive tape section, and FIG. 4 is a side view of the dust removal tape section.

The holding mechanism for the disk 1 of this embodiment includes a rotary shaft 8 having a fitting rod part 6 that fits into the center hole 1a of the disk 1 and a holding surface 7 that comes into contact with the inner periphery of one side of the disk 1, and the fitting rod part 6. The center hole 1a of the disk 1 is inserted into the insertion rod portion 6 manually or automatically, and Both sides of the disk 1 are held between the holding surfaces 7 and 10, and a rotating shaft 8 is rotated by a rotation mechanism (not shown), thereby rotating the disk 1.

Further, in this embodiment, movable tables 12a and 12b are arranged facing each other with the disk 1 as a boundary, and abrasive tape reels and a continuous transport mechanism (not shown) are disposed on these movable tables 12a and 12b, for example, one using a pair of clamping rolls. This mobile table 12
Brackets 13a and 13b are provided upright on a and 12b, and pressure adjustment mechanisms 14a and 14b are provided on these brackets 13a and 13b.
4a, 14b are provided with guide plates 15a, 15b, and each guide plate 15a, 15b is provided with a detour roll 16.
a, 16b and the pressure roll 17 are mounted on an axis, and the abrasive tapes 2a, 2 are pulled out from the abrasive tape reel.
b is detoured by the detour rolls 16a, 16b and the press roll 17 to form folded polished portions 3a, 3b.

The movable tables 12a and 12b are movable toward and away from each other, and are movable laterally relative to the disk 1.

Also, regarding the dust removal tapes 4a and 4b, a dust removal tape reel and a connecting transfer mechanism are arranged on a moving table (not shown), and brackets 18a and 18b are set upright on this moving table.
8a, 18b are provided with pressure adjustment mechanisms 19a, 19b, guide plates 20a, 20b are provided with these pressure adjustment mechanisms 19a, 19b, and this guide plate 20
a, 20b with detour rolls 21a, 21b and a pressure roll 22, and the dust removal tapes 4a, 4b pulled out from the dust removal tape reel are detoured by the detour rolls 21a, 21b and the pressure roll 22 to form a folded dust removal section 5a, 5b.

Furthermore, the polishing tapes 2a and 2b of this embodiment are made of nonwoven fabric.

Since this embodiment has the above-mentioned configuration, when the operation is started, the moving tables 12a, 12b and the moving table (not shown) move towards the disk 1 in the direction of the arrow a in FIG.
The folded polishing sections 3a and 3b clamp one side of the rotating disk 1, and the folded dust removal sections 5a and 5b clamp the other side of the rotating disk 1.

As a result, both sides of the disk 1 are polished by the abrasive tapes 2a, 2b of the folded abrasive parts 3a, 3b, and the abrasive grains etc. that fall off due to the polishing are removed by the dust removal tapes 4a, 4b of the folded dust removal parts 5a, 5b. Dust is removed.

In addition, the double-folded abrasive parts 3a, 3b move laterally in the direction of the arrow b in FIG. The folded dust removal sections 5a and 5b move backward as shown by arrows c and d in the figure, and stop at their original positions.

As described above, in the present invention, both sides of the rotating disk 1 are covered with the abrasive tape 2a of the folded abrasive parts 3a, 3b.
Since the polishing process is performed by clamping with the double-folded polishing parts 3a, 2b, the polishing efficiency can be improved.
3b grips the disk 1 while moving laterally to perform the polishing process. Therefore, the disk 1 is subjected to three movements: the rotational movement of the disk 1 itself, the transport movement of the polishing tapes 2a and 2b, and the lateral movement of the polishing tapes 2a and 2b. The combination of motions creates a complex polishing action, and the polishing process becomes even better. Further, since the dust removal tapes 4a and 4b of the double-folded dust removal parts 5a and 5b clamp the both sides of the disk 1 and remove the fallen abrasive grains, thereby facilitating the dust removal action, the dust removal tapes 4a and 4b of the folding dust removal parts 5a and 5b are attached to both sides of the disk 1, thereby facilitating the dust removal action. This can be prevented, allowing for better polishing.

As described above, the intended purpose can be fully achieved.

[Brief explanation of the drawing]

The drawing shows one embodiment of the device of the present invention,
Figure 1 is a plan view of the main part, Figure 2 is a perspective view of the main part,
FIG. 3 is a side view of the abrasive tape section, and FIG. 4 is a side view of the dust removal tape section. 1... Disk, 2a, 2b... Abrasive tape,
3a, 3b...Folded polishing part, 4a, 4b...Dust removal tape, 5a, 5b...Folded dust removal part.

Claims (1)

[Scope of Claims] 1. Grinding both sides of one side of the rotating disk by holding both sides of the rotating disk between the folded abrasive parts of a pair of continuously transferred abrasive tapes and moving the both folded abrasive parts laterally. Both sides of the magnetic disk are characterized in that the other side of the disk is clamped by a double-folded dust removal section of a pair of dust removal tapes that are continuously transported to remove fallen abrasive grains, etc. from both sides of the disk. Polishing method. 2 With the rotating disk as a boundary, folded abrasive parts of a pair of continuously transported abrasive tapes are arranged facing each other on one side, and folded dust removal parts of a pair of continuously transported dust removal tapes are arranged facing each other on the other side. and the double-folded abrasive section and the double-folded dust removal section are provided so as to be movable in contact with and away from the disk, and the double-folded abrasive section is provided so as to be movable laterally with respect to the disk. Double-sided polishing equipment for magnetic disks.