JP2008112497A - Disk edge vanishing device and disk edge vanishing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk edge vanishing device and a disk edge vanishing method for removing matters in more detail, such as dust or dirt adhering to an outer periphery edge of a disk. <P>SOLUTION: The disk edge vanishing device is equipped with; a spindle which chucks an inner periphery of the disk and rotates; a tape traveling mechanism which runs a cleaning tape; and a roller. It is composed to rotate a disk mounted on a spindle on a vertical plane, contact the cleaning tape horizontally traveling at a lowest position of the outer periphery edge of the disk, slide the cleaning tape in contact by pressing and energizing the roller to the outer periphery edge of the disk from a back surface of the cleaning tape, and vanish the matter adhering to the periphery edge. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a disk of a hard disk drive, and more particularly to a disk end surface burnishing device and a disk end surface burnishing method for removing deposits such as dust and dirt attached to an outer peripheral end surface of a disk.

  In the assembly process of a hard disk drive, a head assembly, a disk as a recording medium, a printed circuit board mounted with a control circuit, and the like are incorporated in a drive enclosure, and these are performed in an environment such as a clean room. Hard disk drives perform recording and playback while the magnetic head floats about tens of nanometers above the disk surface during operation. If there is dust in the drive enclosure, it will collide with the dust and cause a head crash. The assembly work is performed in a clean room environment so that dust does not enter the drive enclosure. Also, of course, at the part level supplied to the assembly process, dust must not be attached to them. For this reason, for example, in the case of a disc, both sides of the disc are cleaned in the manufacturing stage of the disc, and the disc is supplied to an assembly process in a sealed dust-free container. For cleaning the disk, dust and protrusions are removed by sliding the cleaning tape on both sides of the recording surface of the disk.

  As described above, the flying height between the magnetic head and the disk is required to be further lowered with the increase in recording density, and the dust attached to the components incorporated in the drive enclosure is required to be more clean than before. It is getting to be. For this reason, attention has been focused on cleaning the end face of the disk in addition to the conventional cleaning of the recording face.

A method for cleaning the end face of an optical disc has been proposed as related to the cleaning of the disc. The purpose of this proposal is to remove the material adhering to the end face because the material of this recording layer is adhering to the end face of the optical disc (adhering to the formation of the recording layer with an organic dye) and the product value is poor. Yes. In this method, a long cleaning belt is sent intermittently or continuously, and the end surface of a rotating disk is brought into contact with the cleaning belt while supplying a solvent that dissolves an organic substance as a recording layer. It is a thing to wipe off (patent document 1).
JP-A-5-242534

  As indicated above, the height of the magnetic head flying over the disk is becoming increasingly lower as the hard disk drive has a higher recording density, and the intrusion of dust into the drive enclosure or in the drive enclosure There should be no dust generation. For this reason, high cleanliness is also required for a disk that is one of the components incorporated in the drive enclosure, and it is necessary to clean not only the conventional recording surface but also the disk end surface.

  The method proposed in Patent Document 1 is not intended to remove dust for head crash prevention, but is considered to be the same and effective method for cleaning the disk end face. However, when cleaning is performed from the viewpoint of preventing dust from entering the drive enclosure, it is necessary to consider how to apply the tape that slides in contact with the end surface of the disk, reattachment of the removed dust, and the like.

  An object of the present invention is to provide a disc end surface burnishing device and a disc end surface burnishing method that efficiently remove dust and dirt adhering to the end surface of a disc in a short time and prevent reattachment of the removed deposit. To do.

The disc end face burnishing apparatus and disc end face burnishing method of the present invention are configured as follows.
(1) 1st invention The disc end surface burnishing device of the 1st invention comprises a spindle, a tape running mechanism, and a roller. The spindle rotates by chucking the inner periphery of the disk, and the tape running mechanism runs the cleaning tape. Then, by rotating the spindle, the disk mounted on the spindle is rotated on the vertical surface, and a cleaning tape that horizontally travels by the tape traveling mechanism is brought into contact with the lowest position of the outer peripheral end surface of the disk. Is pressed against the outer peripheral end surface of the disk, the cleaning tape is brought into contact with the outer peripheral end surface and slid, and the deposit adhered to the outer peripheral end surface is burnished.

  That is, the cleaning tape runs horizontally between the end face of the disk and the roller at the lowest point of the disk rotating on the vertical surface, and the cleaning tape removes deposits on the outer peripheral end face of the disk.

With the above configuration, the disk end surface is burnished with the cleaning tape while being pressed by the roller, so that the adhered matter can be surely removed by applying a pressing force that does not damage the disk end surface. Further, since the disk is rotated on the vertical plane and the deposits are removed at the lowest point, reattachment can be prevented. Further, by causing the cleaning tape to run horizontally, the pressing force of the roller can be applied to the end surface of the disk via the cleaning tape without being affected by the tape tension.
(2) Second invention In the second invention, two spindles according to the first invention are arranged on a turret that can be swung up and down, and a disc mounted on the lower spindle is burned with respect to the upper spindle. The disk is removed and attached, and after the respective operations of both spindles are completed, the turret is turned by half a turn so that the respective operations can be performed again by both spindles.

This makes it possible to replace the disk of the other spindle during removal of the disk of one spindle (removal from the spindle of the disk after burnishing and attachment to the spindle of the disk before burnishing), improving work efficiency. it can.
(3) Third invention In a third invention, the tape running mechanism and the roller according to the first and second inventions are arranged on an elevating mechanism, and the tape running mechanism and the roller are used by using the elevating mechanism at the start of the burnish. The cleaning tape that moves upward and moves horizontally by the tape running mechanism is brought into soft contact at the lowest position on the outer peripheral end surface of the rotating disk, and then the roller is pressed from the back surface of the cleaning tape to burn and burnish. At the end, the tape running mechanism and the roller are moved downward by using an elevating mechanism.

As a result, the cleaning tape gradually comes into contact with the end surface of the disk, so that scratches and the like can be prevented from occurring on the end surface of the disk. Further, in the first invention, when the disk is replaced, the cleaning tape is separated from the end face of the disk, so that the replacement becomes easy.
(4) Fourth invention In the fourth invention, the roller of the first to third inventions is formed of a flexible material, and the cleaning tape is deformed by the pressing force of the roller against the disk, so that the outer periphery of the disk It slides in contact with the end face and a chamfered portion formed on the outer peripheral end face.

Since the roller is a soft material, the cleaning tape can be deformed by pressing, and the disk end surface and its chamfered portion can be slid in contact and burnished.
(5) Fifth Invention The fifth invention is the disc end face burnishing method of the first invention.

  According to the first invention, an appropriate pressing force can be applied to the end surface of the disc through the cleaning tape, so that the deposits can be removed reliably, and the burnish can be applied at the lowest point of the disc rotating on the vertical plane. Therefore, it is possible to provide a disc end face burnishing device capable of preventing reattachment of dust.

  According to the second invention, since the turret structure has two spindles, the disk end work can be performed with one spindle while the disk can be removed / attached with the other spindle. A vanishing device can be provided.

  According to the third invention, since the cleaning tape is gradually brought into contact with the disk end surface, it is possible to prevent the occurrence of scratches on the disk end surface.

  In the fourth invention, since the roller is made of a flexible material, the cleaning tape can be deformed by pressing the cleaning tape, and deposits on the disk end face and the chamfered portion can be removed.

  According to the fifth aspect, it is possible to provide a disk end face burnishing method having the same effect as that of the first aspect.

(Embodiment 1)
Embodiment 1 of the present invention will be described with reference to FIG. The first embodiment is an example in which one spindle is used, and corresponds to the disc end face burnishing device of the first invention.

  In FIG. 1, the left figure is a front view of the disc end face burnishing device, and the right figure is a side view of the front view. The inner surface of the disc 100 to be burnished is chucked by a spindle 120, and the spindle 120 is rotated by a motor 130. As shown in the figure, the disk 100 rotates in a vertical plane.

  Although the cleaning tape 210 is shown below the disk 100, it is not yet in contact with the disk 100 and is in a state before burnishing. The cleaning tape 210 is delivered from the delivery reel 240, travels horizontally through three rollers, and is taken up on the take-up reel 250 through three rollers. Of the three rollers, the lower roller is a tension roller for maintaining the tension of the cleaning tape 210. The delivery reel 240 and the take-up reel 250 are respectively coupled to the motor 241 and the motor 251 via the gear 260 and can be rotated by the driving force of the motor. The configuration including the delivery reel 240, the take-up reel 250, the motors 241 and 251, and a plurality of rollers is the tape traveling mechanism 200. This tape running mechanism can be moved up and down by a lifting mechanism (not shown).

  A pressure roller 220 is disposed below the portion of the cleaning tape 210 that travels horizontally. During the burnishing, the pressing roller 220 presses the cleaning tape 210 upward from below (details will be described later). A mechanism for pressing including the pressing roller 220 is the pressing roller module 230. FIG. 2 shows details of the pressure roller module 230. The left figure shows a front view of the pressure roller module 230, and the right figure is a side view of the front view. The pressure roller 220 is mounted on a roller support base 231, and the lower part of the roller support base 231 is in contact with the movable part 232 of the air slider 233. The roller support base 231 is attached to the pressing module support base 235 via a linear ball slide 234. Accordingly, when air is supplied to the air slider 233, the movable part 232 is moved upward, and the roller support 231 slides up on the linear ball slide 234. That is, the pressing roller 220 is pushed up. If the air is exhausted from the air slider 233, the pressure roller 220 is lowered.

  FIG. 3 shows a state in which the cleaning tape 210 contacts and slides on the outer peripheral end surface of the disk 100 to remove the deposits on the end surface. That is, the tape travel mechanism 200 is moved upward by the lifting mechanism from the state of FIG. 1, and then the air slider 233 is operated so that the pressing roller 220 presses the cleaning tape 210 positioned above. . The rotation direction of the disk 100, the traveling direction of the cleaning tape 210, and the rotation direction of the pressing roller 220 are directions indicated by arrows in the respective drawings. That is, at the position of the lowest point of the disk 100, the rotation direction of the disk and the running direction of the cleaning tape 210 are different from each other, and the relative speed of contact sliding is increased. For example, the rotational speed of the disk 100 is 3,000 rpm, and the running speed of the cleaning tape 210 is several mm to several tens mm / sec. Depending on the material of the cleaning tape 210, the rotation direction of the disk and the traveling direction of the cleaning tape 210 may be the same direction. Moreover, the raising / lowering distance of the tape running mechanism by the raising / lowering mechanism is 5-10 mm, for example, and the raising distance by the air slider 233 of the press roller 220 is 0.5 mm. The air slider 233 that pushes up the pressing roller 220 also serves as an air spring against the repulsive force from the cleaning tape 210.

By using a flexible material for the pressure roller 220, it is possible to remove the deposit on the chamfered portion in addition to the end surface of the disk 100. FIG. 4 shows an embodiment thereof, which is an example in which, for example, urethane rubber or chloroprene rubber is used for the pressure roller 220 and a non-woven polishing tape is used for the cleaning tape 210. When the pressing roller 220 is pressed against the cleaning tape 210, it is deformed along the end face shape of the disk 100, and the cleaning tape 210 can be applied to the end face portion and the chamfered portion. In this state, the cleaning tape 210 slides, so that the adhered matter can be removed. The pressing force of the pressing roller 220 against the cleaning tape 210 is several grams to several tens of grams.
(Example 2)
The second embodiment corresponds to the second aspect of the invention, and performs burnishing and disk replacement alternately using two spindles. FIG. 5 shows the configuration, like FIG. 1, the left figure shows a front view and the right figure shows a side view. The spindle 120 and the spindle 121 are arranged on the turret 110 so as to face each other with respect to the center of the turret 110. Each spindle is joined to motors 130 and 131 for applying rotation, and the turret 110 is also joined to a motor 140 to be able to turn. Turning the turret 110 so that the spindles 120 and 121 are positioned vertically, the disc mounted on the lower spindle (spindle 120 and disc 100 in FIG. 5) is burnished, and the disc on which the upper spindle is mounted. (In FIG. 5, the spindle 121 and the disk 101) are subjected to disk replacement (removal of the burnished disk and mounting of the disk to be burned from now on).

  For example, the disk exchange for the upper spindle 121 is performed by a mechanism shown in FIG. 6A, the loading / unloading mechanism 300 includes an unloading hand 310 and a loading hand 320. The loading hand 320 takes out a disk from a disk storage container (not shown) and tilts four grip pins 321 inward. It is assumed that the disc is gripped. The disc 101 mounted on the upper spindle 121 has already been burnished, the unloading hand 310 is positioned at the location of the disc 101, and the disc 101 is removed from the spindle 121 using a grip pin. Subsequently, the load / unload mechanism 300 is moved to the right to position the loading hand 320 at the position of the upper spindle 121, and the gripped disk is mounted on the spindle 121. During this time, burnishing is performed on the lower spindle 120.

  When the work of burnishing and disk replacement is completed at each spindle, the turret 110 is rotated half a turn, and each work is performed again. By doing so, the next disk can be set during the burnishing operation, so that the work efficiency can be increased.

In addition to the above example, the following additional notes are disclosed.
(Appendix 1)
A spindle that rotates by chucking the inner periphery of the disk;
A tape running mechanism for running the cleaning tape;
With rollers,
The disk mounted on the spindle is rotated in a vertical plane, the cleaning tape that is horizontally driven by the tape running mechanism is brought into contact with the lowermost position of the outer peripheral end surface of the disk, and the roller is moved from the back surface of the cleaning tape to the disk. A disc end face burnishing device characterized by pressing and urging the outer peripheral end face to cause the cleaning tape to slide in contact with the outer peripheral end face and burnish deposits adhering to the outer peripheral end face.
(Appendix 2)
Two spindles are arranged on the upper and lower sides of the turret capable of rotating the spindle, and the disc is removed from and attached to the upper spindle while the disc mounted on the lower spindle is burnished. 2. The disc end face burnishing device according to appendix 1, wherein the turret can be swung half a turn and the respective operations can be performed again with the two spindles.
(Appendix 3)
The tape running mechanism and the roller are arranged on an elevating mechanism, and at the start of a burnish, the tape running mechanism and the roller are moved upward using the elevating mechanism, and a cleaning tape that runs horizontally by the tape running mechanism is provided. Abutting on the lowest position of the outer peripheral end surface of the rotating disk, and subsequently urging the roller from the back surface of the cleaning tape to burn, and using the lifting mechanism at the end of the burnish, The disk end surface burnishing device according to appendix 1 or appendix 2, wherein the roller is moved downward.
(Appendix 4)
The roller is formed of a material having flexibility, and the cleaning tape is deformed by the pressing force of the roller to the disk, and the outer peripheral end surface of the disk and a chamfered portion formed on the outer peripheral end surface are in sliding contact with each other. The disc end face burnishing device according to any one of appendix 1 to appendix 3, wherein:
(Appendix 5)
The disk mounted on the spindle is rotated on a vertical surface, and a cleaning tape that horizontally travels by the tape traveling mechanism is brought into contact with the lowermost position of the outer peripheral end surface of the disk, and the roller is pressed against the outer peripheral end surface of the disk from the rear surface of the cleaning tape. A disc end surface burnishing method comprising: biasing and sliding the cleaning tape in contact with the outer peripheral end surface to burn out deposits adhering to the outer peripheral end surface.
(Appendix 6)
The disk according to appendix 1 or appendix 2, characterized in that the rotating direction of the disk mounted on the spindle and the traveling direction of the tape traveling by the tape traveling mechanism are different from each other at the lowest position of the disk. End face burnish device.
(Appendix 7)
3. The disk end surface according to claim 1 or 2, wherein the rotation direction of the disk mounted on the spindle and the traveling direction of the tape traveling by the tape traveling mechanism are the same direction at the lowest position of the disk. Vanish equipment.
(Appendix 8)
The disk end surface burnishing device according to appendix 1 or appendix 2, wherein the roller is pressed against the cleaning tape by an air slider.
(Appendix 9)
The disc end surface burnishing device according to appendix 1 or appendix 2, wherein the tape running mechanism has a mechanism for adjusting the tension of the running cleaning tape.

It is a disk end face burnishing device (Example 1)-before burnishing. It is an example of a structure of a press roller module. Disc end face burnishing device (Example 1) -After burnishing-. This is an example where the end face is burnished including the chamfered portion. It is a disk end surface burnishing device (Example 2). It is an example of a mechanism for loading / unloading a disk.

Explanation of symbols

100 disc 101 disc 110 turret 120 spindle 121 spindle 130 motor (for spindle 120)
131 motor (for spindle 121)
140 motor (for turret 110)
DESCRIPTION OF SYMBOLS 200 Tape traveling mechanism 210 Cleaning tape 220 Pressure roller 230 Pressure roller module 231 Support stand 232 Moving part 233 Air slider 234 Linear ball slide 235 Press module support stand 240 Sending reel 241 Motor (for sending reel 240)
250 take-up reel 251 motor (for take-up reel 250)
260 gear 300 load / unload mechanism 310 unloading hand 320 loading hand 321 gripping pin

Claims (5)

A spindle that rotates by chucking the inner periphery of the disk;
A tape running mechanism for running the cleaning tape;
With rollers,
The disk mounted on the spindle is rotated in a vertical plane, the cleaning tape that is horizontally driven by the tape running mechanism is brought into contact with the lowermost position of the outer peripheral end surface of the disk, and the roller is moved from the back surface of the cleaning tape to the disk. A disc end face burnishing device characterized by pressing and urging the outer peripheral end face to cause the cleaning tape to slide in contact with the outer peripheral end face and burnish deposits adhering to the outer peripheral end face. Two spindles are arranged on the upper and lower sides of the turret capable of rotating the spindle, and the disc is removed from and attached to the upper spindle while the disc mounted on the lower spindle is burnished. The disc end surface burnishing device according to claim 1, wherein the turret is turned by half a turn so that the respective operations can be performed again by the two spindles. The tape traveling mechanism and the roller are arranged on an elevating mechanism, and at the start of a burnish, using the elevating mechanism, the tape traveling mechanism and the roller are moved upward, and a cleaning tape that horizontally travels by the tape traveling mechanism is provided. Soft contact is made at the lowest position of the outer peripheral end surface of the rotating disk, and then the roller is pressed from the back surface of the cleaning tape for burnishing, and at the end of the burnishing, the tape running mechanism is used using the lifting mechanism The disk end surface burnishing device according to claim 1 or 2, wherein the roller and the roller are moved downward. The roller is formed of a material having flexibility, and the cleaning tape is deformed by the pressing force of the roller to the disk, and the outer peripheral end surface of the disk and a chamfered portion formed on the outer peripheral end surface are in sliding contact with each other. The disc end surface burnishing device according to any one of claims 1 to 3, wherein the disc end surface burnishing device is provided. The disk mounted on the spindle is rotated on a vertical surface, and a cleaning tape that horizontally travels by a tape traveling mechanism is brought into contact with the lowermost position of the outer peripheral end surface of the disk, and a roller is pressed against the outer peripheral end surface of the disk from the back surface A disc end surface burnishing method comprising: biasing and sliding the cleaning tape in contact with the outer peripheral end surface to burn out deposits adhering to the outer peripheral end surface.

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