JPS6038785B2 - Magnetic disk pack cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic disk pack cleaning device for cleaning the surface of a magnetic disk pack used in a magnetic disk storage device.

The conventional and widely used method for cleaning magnetic disk packs is to wrap a piece of Silpon paper soaked in 91% inpropyl alcohol around a thin non-metallic plate or rod, and wipe the disk surface with one piece of paper. However, this method has the disadvantage that it is time consuming and becomes quite a tedious task when there are a large number of magnetic disk packs.

Furthermore, there has been a recent trend in replaceable magnetic disk storage devices to omit the brush mechanism for cleaning the magnetic disk storage devices because it is considered to be ineffective and to reduce the manufacturing cost of magnetic disk packs. However, it is still necessary to clean the magnetic disk pack itself, and there has been a demand for an apparatus that can easily and quickly clean the magnetic disk pack. In view of the above-mentioned needs, the present invention aims to provide a simple magnetic disk pack cleaning device, and will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing the basic configuration of the present invention, in which 1 is a magnetic disk constituting a magnetic disk pack, 2 is a tapered roller section, and 3 is a shaft supporting the tapered roller section 2 (this specification). In books, it is called a roller axis).

When the disc rotates in the direction of arrow A, the tapered roller portion 2 rotates in the direction of arrow B due to the warp of the force that attempts to prevent the rotation of the disc 1. It is a necessary structure for this invention that the tapered roller portion 2 has a tapered shape,
If the tapered roller part 2 is cylindrical, it will not rotate properly because the peripheral speeds are different between the inside and outside of the disk 1, but if it is made into a tapered shape with a tapered tip as shown in Figure 1, it will work well. Rotate. However, this tapered shape.
The dimensions of the roller part 2 are as shown in Fig. 12, for example.
The radius ratio of the circular end surfaces 2a and 2b of the tapered roller portion 2 is approximately 1.5. Also, the circular end surface 2a of the tapered roller portion 2
Assuming that the position used in the disk disk is radius 6 (assuming an 8-inch disk with an outer diameter of 210 mm), disk 1
The rotation speed ratio of the and tapered roller part 2 is 60:2=30:
It becomes 1. Therefore, for example, the rotation speed of the disc is 3600.
RPM (or 360 RPM), the rotation speed of the tapered roller section 2 is 120 RPM (or 12 RPM).
). Strictly speaking, when the tapered loaf portion 2 moves in the radial direction of the disk 1, the ratio of the circumferential speeds at the corresponding radial positions of the disk 1 to the circular end surfaces 2a and 2M changes. If the radius ratio of the circular end surfaces 2a and 2b of the tapered roller section 2 is not changed, the tapered roller section 2
If the radius ratio of 2b is not changed, the rotational performance of the tapered roller portion will deteriorate. Therefore, it is necessary to determine the radius of the circular end surfaces 2a and 2b so that the rotational performance of the tapered roller portion 2 is maximized near the center of the usable range of the disk 1. Figure 2,
3 and 4 are views showing an embodiment of the tapered cleaning roller used in the present invention, in which FIG. 2 is a front view, FIG. 3 is a side sectional view, and FIG. 4 is a plan view.

In these drawings, the same reference numerals as in FIG. 1 indicate the same or corresponding parts, and 4 is a plate (or brush) for removing dirt attached to the tapered roller portion 2, which is fixed to the roller ball 3 (which does not rotate). 5 is a pressure spring that presses the tapered roller portion 2 against the disk; 6 is a roller shaft 3 and the pressure spring 5;
The pad connects the roller shaft 3, pressure spring 5, and pad 6.
are collectively referred to as a cleaning arm, 7 is a holder for attaching this cleaning arm, and 8 is a screw.

9 is a soft cleaning cloth that covers the circumference of the tapered roller portion 2; 10 is a bearing into which the roller shaft 3 is inserted and rotates the tapered roller portion 2 relative to the roller shaft 3;

In the embodiment shown, the loaf shaft 3 does not rotate. One green part of the plate 4 corresponds to the tapered roller part 2 as shown in Fig. 4.
The structure is such that it comes in contact with the rotating surface and makes it easy to remove dirt from that surface. In this specification, the parts shown in FIGS. 2, 3, and 4 will be collectively referred to as a tapered cleaning roller. 5 and 6 are front views showing an embodiment of the present invention, and FIG. 6 shows a state in which the tapered cleaning roller is in a position separated from the surface of the magnetic disk,
FIG. 6 shows the tapered cleaning roller in a position where it contacts the surface of the magnetic disk.

In these drawings, the same reference numerals as in FIGS. 1 to 4 indicate the same or corresponding parts, 11 is a cam, 12 is a moving device, and includes a tapered roller portion 2, a plate 4, and a pressure spring 5. The tapered cleaning roller is moved by a moving device 12, and in the state shown in FIG. 5, the pressure spring 5 is on the cam 11 and no cleaning operation is performed, but as shown in FIG. When the moving arm moves towards the disk 1, the tapered roller section 2 is gradually pressed against the disk under the action of the oblique guide section of the pressure spring 5. The tapered roller portion 2 comes into contact with the surface of the disc 1 and is rotated by the rotation of the disc to remove dirt adhering to the disc. The dirt adhering to the tapered roller portion 1 is removed by the plate 4, and part of it is blown away by the air flow generated by the rotation of the disk 1.
FIG. 7 is a front view showing an embodiment of the present invention, in which the same reference numerals as in FIG. 5 indicate the same or corresponding parts, 13 is a cleaning arm, 14 is a coupling holder, 15 is a step motor, and 16 is a magnetic disk. 17 is a spindle, 18 is a drive motor, 19 is a transmission belt, 20 is a base, 21 is a seal, and 22 is a case.

Here, a plurality of disks stacked together is a magnetic disk pack 16, which is placed on a spindle 17 and rotated by a drive motor 8 via a transmission belt 19. At this time, the moving table 12 is moved toward the center of the magnetic disk pack 16 by the step motor 15 via the coupling holder 14. Then mobile device 1
The tapered roller portions 2 of all the tapered cleaning rollers attached to the rollers 2 come into contact with the surface of each disc and begin to rotate, and cleaning of each disc begins. Tapered roller part 2
is moved in the radial direction of the disc, controlled by step motor 151, so that the entire area of the disc can be cleaned. Further, this device is provided with a case 22 to prevent dust from entering from the outside. The operation between each magnetic disk and its corresponding tapered cleaning roller is as explained with reference to FIGS.
If any of the tapered cleaning rollers is installed and one of the tapered cleaning rollers breaks down or the tapered roller portion 2 becomes heavily soiled, the tapered cleaning rollers can be replaced one by one. There is.

FIG. 8 is a front view showing another embodiment of the tapered cleaning roller used in the present invention, in which the same reference numerals as in FIG. 2 indicate the same parts, and 23 is a tapered grooved roller portion.

The threaded groove of this roller part 23 has a structure suitable for allowing cleaning liquid to soak into the roller surface, for example, at a concentration of 9.
The surface of the magnetic disk can be cleaned more effectively by impregnating it with a cleaning liquid such as 1% inpropyl alcohol. 9 is a front view and a side view showing an example of a cleaning liquid supply device to the tapered grooved roller portion 23 shown in FIG. 8, and the same reference numerals as in FIGS. 5 and 8 indicate the same parts. , 24 is a cleaning liquid supply case, and 25 is a mop-like cloth fiber.

In FIG. 9, the cleaning liquid is supplied from the direction of arrow C and flows down in the direction of arrow D. At this time, the cleaning liquid is supplied onto the tapered grooved roller 23 through the cloth fibers 25, but the supply is performed while the pressure spring 5 is riding on the cam 11. The cleaning liquid is not constantly supplied, but is controlled so that it is supplied in the required amount when necessary, but such control can be easily designed using conventionally known techniques, and detailed explanation thereof will be omitted. FIG. 10 is a plan view showing another embodiment of the present invention, in which FIG.
The same reference numerals as in FIG. 8 indicate the same or corresponding parts.

FIG. 11 is a diagram illustrating an example of program steps when the apparatus shown in FIG. 10 is controlled by a program. The speed of rotation of the disc pack 16 can be changed in the chart, and in step 101, the disc pack 16 is rotated at a high speed, and the airflow generated by the rotation blows off dust lightly attached to the disc surface. In step 102, the rotation speed is lowered, and in step 103, the tapered roller section 2 (not impregnated with cleaning liquid) cleans the disk surface, and in step 104, the tapered roller section 23 (not impregnated with cleaning liquid) cleans the disc surface. After cleaning the disk surface and turning to high speed rotation in step 105 to drain the cleaning liquid, the process returns to low speed rotation in step 106 and in step 107, the tapered roller section 2 removes the remaining cleaning liquid and dirt. Wipe it off. As described above, according to the present invention, cleaning of a magnetic disk pack, which has been extremely troublesome in the past, can be easily done in a short time.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the basic configuration of the present invention, FIGS. 2, 3, and 4 show an embodiment of the tapered cleaning roller used in the invention, and FIG. 2 is a front view, and FIG. 3 is a side sectional view, FIG. 4 is a plan view, FIGS. 5 and 6 are front views showing one embodiment of the present invention, FIG. 7 is a front view showing one embodiment of the present invention, and FIG. The figure is a front view showing another embodiment of the tapered cleaning loaf used in the present invention, and FIG. 9 is the tapered cleaning loaf shown in FIG. 8. FIG. 10 is a front view and a side view showing an example of a cleaning liquid supplying device to the cleaning fluid. FIG. 10 is a plan view showing another embodiment of the present invention.
FIG. 1 is a flowchart showing an example of program steps for controlling the apparatus shown in FIG. 10, and FIG. 12 is a diagram showing an example of dimensions of the tapered loaf portion. In the figure, 1 is a disk, 2
is a tapered roller part, 3 is a roller shaft, 4 is a plate, 5
1 is a pressure spring, 6 is a pad, 7 is a holder, 8 is a mounting screw, 9 is a cleaning cloth, 10 is a bearing, 11 is a cam, 12 is a moving mounting, 13 is a cleaning arm, 14 is a coupling holder, 15 16 is a step motor, 16 is a magnetic disk pack, 17 is a spindle, 18 is a drive motor, 19 is a transmission belt, 2 rivers is a base, 21 is a seal, 22 is a case, 23 is a tapered grooved roller, 24 is a cleaning liquid Supply case 25 is cloth fiber. Note that the same reference numerals in each figure represent the same or corresponding parts. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12

Claims (1)

[Scope of Claims] 1. A tapered cleaning roller having a structure suitable for contacting the surface of a magnetic disk constituting a magnetic disk pack and cleaning the surface of the magnetic disk by rotation of the magnetic disk, and this tapered cleaning roller. A magnetic disk pack cleaning device comprising a moving device for positioning the cleaning roller at a desired position between a position in contact with the surface of the magnetic disk and a position away from the surface of the magnetic disk. Device. 2. The tapered cleaning roller includes a roller shaft and its bearing, and has a tapered roller portion that contacts the surface of a magnetic disk and rotates as the magnetic disk rotates. Magnetic disk pack cleaning device. 3. The tapered cleaning roller has an edge that is fixed to its non-rotating portion and comes into contact with the rotating surface of the rotating tapered roller section, and has a structure suitable for removing dust attached to the rotating surface of the tapered roller section. 3. The magnetic disk pack cleaning device according to claim 2, further comprising a plate or a brush having the following characteristics. 4. The magnetic disk pack cleaning device according to claim 1, wherein the tapered cleaning roller is provided with a mechanism for pressing the roller surface against the surface of the magnetic disk. 5. The magnetic disk pack cleaning device according to claim 1, wherein the tapered cleaning roller has a structure suitable for impregnating cleaning liquid into the roller surface. 6. A magnetic disk pack cleaning device according to claim 5, wherein the tapered cleaning roller is provided with a cleaning liquid supply device that automatically supplies cleaning liquid to soak into the roller surface. 7. The moving device is provided with a mechanism for alternately bringing into contact a tapered cleaning roller impregnated with cleaning liquid and a tapered cleaning roller not impregnated with cleaning liquid on the surface of the same magnetic disk. A magnetic disk pack cleaning device according to scope 1. 8. The moving device includes a moving platform that simultaneously moves each tapered cleaning roller for each of the plurality of magnetic disks constituting the magnetic disk pack, and a moving platform that removes any tapered cleaning roller from this moving platform or removes the tapered cleaning roller from the moving platform. 2. The magnetic disk pack cleaning device according to claim 1, further comprising a mechanism for mounting a new tapered cleaning roller in the mounting position of the cleaning roller. 9. The magnetic disk pack cleaning device according to claim 1, further comprising a mechanism for changing the rotational speed of the magnetic disk pack.