JPH077506B2 - Disc handling chuck mechanism - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handling chuck mechanism for a hard disk such as a magnetic disk, and more particularly to a spindle that is precisely fitted into a positioning hole provided at the center of the disk. The present invention relates to a mechanism for inserting and inserting a disc without difficulty.

[Prior Art] The recording density of a hard disk (hereinafter, simply referred to as a disk) such as a magnetic disk or an optical disk has recently been further advanced, and a highly accurate inspection corresponding to the recording density is performed in manufacturing the disk. A positioning hole is provided in the center of each of these disks, and the positioning hole is fitted into the spindle of the inspection device and rotated by the motor. A handling chuck that chucks and conveys a disc is used for this insertion.

FIG. 4 shows the chucking method of the handling chuck mechanism. The pressure rollers 2a, 2b, 2c are arranged at a plurality of locations (three locations in the figure) on the outer peripheral side surface of the disk 1, and the pressure roller is provided by an appropriate mechanism. Is pushed inward to push the side surface. The disk supported by pressing is lowered and fitted into the spindle 3, then the pressing roller is released and lifted and retracted, and the disk is rotated and inspected.

[Problems to be Solved] In the above fitting, the positioning hole and the spindle are manufactured so as to be fitted accurately with each other for the above-described high-precision inspection, and the pressing force of the pressing roller is conveyed. It's set quite strong to hold the disc securely and stably inside. On the other hand, there is some play in the mechanism for the pressing roller, and when the disc is inserted, there is a misalignment between the positioning hole and the spindle corresponding to this play.
Therefore, if such a shift is left as it is, smooth fitting cannot be performed, and the disc is excessively curved, damaging the positioning hole and possibly damaging the disc. Furthermore, when an abnormality occurs in the insertion of the disc, the inspection of the disc due to the flow work may be stopped and the production efficiency may be reduced.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a handling chuck mechanism capable of always smoothly inserting a disc into a spindle regardless of a slight positional deviation.

[Means for Solving the Problems] According to the present invention, a hard disk is pressed by a grooved pressing roller at a plurality of locations on an outer peripheral surface to be supported, and a positioning hole at a central portion of the disk has a vertical axial direction (vertical type). Alternatively, it is a handling chuck mechanism that is inserted into a horizontal (horizontal type) spindle, and a rotary guide rotated by an air cylinder is engaged with each rotary guide by a link mechanism, and a weak pressing force is applied to the disc by a spring. It is composed of two linear guides, and the rotation of the rotary guide by the air cylinder moves the pressing roller directly connected to the linear guide so as to face each other in the horizontal direction.

In the above, depending on the rotary position of the rotary guide, a strong pressing force for pressing and supporting the disc is generated, or a weak pressing force for loosely supporting the strong pressing force to freely support the disc or pressing against the disc is performed. To release.

The link mechanism has a cam floor at one end of each of the two arms, the other ends of which are pivotally supported by a common shaft, and are biased by springs in a direction in which they approach each other.
The angle formed by each other is limited to a certain angle by the stopper.One cam floor engages with the stopper provided on the side surface of the rotary guide to follow the rotation of the rotary guide, and the other cam floor is suitable for the linear guide. It is engaged with a pressing stopper that generates a strong pressing force provided at intervals or a release stopper that releases the disc.

Next, a support mechanism is used for a disc in which the disc surface is vertically supported by a pressing roller with respect to a horizontal spindle. This mechanism is urged by a spring, and in the operation of the above-mentioned strong pressing force and weak pressing force against the disc, the disc is pressed upward by the lower side surface to support it, and when releasing the disc, the rotary guide The support is released by a pressing roller provided on the side surface.

[Operation] In the disc handling chuck mechanism of the present invention having the above-described configuration, the rotary guide is stopped at a position where it is rotated by the operation of the air cylinder, and the pressure rollers directly connected to the two linear guides are the disc rollers. Support by pressing the side surface strongly. When inserting the press-supported disc into the spindle, the rotary guide is rotated by a predetermined angle to loosen the pressing force and support the disc freely, so that the disc can be supported against some displacement of the handling mechanism. Insert smoothly. The rotary guide is further rotated with respect to the inserted disc to release the pressure.

The above-described pressing support and release are performed by the cam floor of the link mechanism pressing the pressing stopper and the release stopper provided on the linear guide by the rotational force of the rotary guide. In the free support, the cam floor is located between the pressing stopper and the releasing stopper and does not work, and the linear guide retains a weak pressing force by the spring provided therein.

Next, in the case of vertically supporting the disk surface, the pressing force of the pressing roller is weak in the free support and the disk lowers due to its own weight. Therefore, the support mechanism presses the lower side surface of the disk upward to support it. The support is released when released.

[Embodiment] FIGS. 1 (a), (b) and (c) are a plan view, an AA vertical sectional view and a partial detailed view of an embodiment of a disk handling chuck mechanism according to the present invention.
In FIGS. 1A and 1B, a base board 4 is provided for the disk 1. The base board moves between predetermined positions by a separate mechanism to convey the supported disk. A rotary guide 5, which is a cylinder having a diameter slightly larger than the positioning hole 1a at the center of the disc, is rotatably supported on the base plate by four rollers 5a concentrically with the disc.
The linear guide 7-1,
7-2 are arranged so as to face each other, and each can be moved in the direction of arrow S or S'by a roller 7a. The linear guides 7-1 and 7-2 and the rotary guide 5 are link mechanisms 6-1 and 6
-2 to engage. The arm 7b is fixed to the outside of each linear guide, and the pressing roller 2 is attached to this. However, one of the linear guides 7-1 has one pressing roller 2a, and the other 7-2 has two pressing rollers 2a, 2b.
To support the disc at three points. Further, each linear guide is biased inward by a spring 7c with a weak force, but the linear guide 7-2 is restricted from moving to the right in the figure by the stopper 7d. On the other hand, a drive mechanism 8 is provided below the base board in the drawing. The drive mechanism rotates the rotary guide by the rod 8b of the air cylinder 8a and the arm 8c directly connected to the rod 8b. Further, the base board is provided with a support mechanism 9 for a disk mounted vertically.

The structure of the link mechanism 6 will be described in detail with reference to FIG. The link mechanism pivotally supports arms 6d and 6e on a shaft 6c, urges them inward by a spring 6f, and limits an angle formed by the arms to a constant angle by a stopper 6g. The cam floor 6a at the tip of each arm is sandwiched by two stoppers 5b provided on the side surface of the rotary guide 5, and the cam floor 6b is a pressing stopper provided inside the linear guide 7 at appropriate intervals.
It is placed between 7e and the release stopper 7f.

2 (a) and 2 (b) are explanatory views of the operation of the above-described structure for the disc. In the figure (a), when the rotary guide 5 rotates in the direction of arrow C1, the arm 6d rotates together with the cam floor 6a, and the cam floor 6b of the arm 6e pushed by the stopper 6g contacting this rotates the release stopper 7f to the right. The linear guide 7-1 is moved by pressing, and the disc is released from the pressing roller. Next, in FIG. 2B, when the rotary guide rotates in the opposite arrow C ₂ direction, the cam floor 6b presses the pressing stopper 7e to the right, and the pressing roller 2a presses the disc, contrary to the above. The pressing force in this case is strong due to the sum of the two springs 6f and 7c. The above operation is similarly performed for the pressing roller on the left side of the drawing. However, the biasing force of each spring has a large and small relationship to stabilize the pressing operation. That is, the springs 6f and 7c on the left side are made stronger than the corresponding ones on the right side. As a result, the left linear guide 7-2 stops at the position of the stopper 7d at the time of pressing, and the disk is stably pressed.

The above is the operation of releasing and pressing the disk. However, when the disk is inserted into the spindle, there is a positional deviation between the positioning hole and the spindle due to backlash of the handling mechanism. As shown by the dotted line, the free support state is set between the release and the pressing. In free support, the cam floor 6b has a pressing stopper 7e and a release stopper 7f.
The linear guide is located in the middle of the above and does not act on the linear guide 7, and the linear guide presses the disk by the weak force of the spring 7c to support it freely.

FIG. 3 is an explanatory view of the operation of the support mechanism 9 for the disc vertically mounted on the horizontal spindle. The "die arm 9b pivotally supported by the shaft 9c is urged by the spring 9d, and the rotary guide 5 is moved by the arrow C". _When it is rotated in the direction of ₁ , that is, when it is pressed or freely supported, the supporter 9a at the tip presses the lower end of the disk 1 upward. The attached pressure roller 5c pushes one end of the arm 9b, and the supporter 9a descends and is released.

The above releasing or pressing operation is performed by supplying air to the right side or the left side of the air cylinder 8a in the figure, and the stopper 8d of FIG. 1 (a) acts to keep the pressing force at a certain limit. Further, when it is freely supported, air is not supplied to both sides, and the piston 8e is located in the middle of the cylinder.

EFFECTS OF THE INVENTION As is apparent from the above description, in the disc handling chuck mechanism according to the present invention, the interaction between the link mechanism and the linear guide applies a strong pressing force to the pressing roller to press and support the disk, In addition, by loosening the pressing force and freely supporting it when inserting it into the spindle, flexible insertion with respect to the positional deviation between the positioning hole and the spindle, that is, highly accurate fitting is smoothly performed. This completely eliminates the risk of damage to the positioning holes or damage to the disk in the conventional handling chuck mechanism. Also, for discs that are mounted vertically to the horizontal spindle, the disc can be supported in the lower part and can be stably inserted and mounted, which is a large part that contributes to the handling mechanism in the hard disk inspection device. There is.

[Brief description of drawings]

1 (a), (b) and (c) are structural views of an embodiment of the disc handling chuck mechanism according to the present invention, and FIGS. 2 (a) and 2 (b) are pressing operations with respect to FIG. FIG. 3 is an explanatory view of the support mechanism of FIG. 1 (a), and FIG. 4 is an explanatory view of a conventional disk handling chuck mechanism by a pressing roller. 1 ... Hard disk, 1a ... Positioning hole, 2 ... Pressing roller, 3 ... Spindle, 4 ... Base board, 5 ...
Rotary guide, 5a …… Roller, 5b, 6g, 7d, 8d ……
Stopper, 5c ... Pressing roller, 6 ... Link mechanism, 6
a, 6b …… Cam floor, 6c …… Axis, 6d, 6e, 7b, 8b, 8c …… Arm, 6f, 7c …… Spring, 7 …… Linear guide, 7a
...... Roller, 7e …… Pressing stopper, 7f …… Release stopper, 8 …… Driving mechanism, 8a …… Air cylinder, 9 …… Support mechanism.

Claims (3)

[Claims] 1. A spindle in which a hard disk is supported by being pressed by grooved pressing rollers at a plurality of positions on the outer peripheral side surface, and a positioning hole at the center of the disk has a vertical (vertical) or horizontal (horizontal) axial direction. In a disc handling chuck to be inserted into a disc, a rotary guide which is rotated by an air cylinder, and a pressing roller which is engaged with the rotary guide by a link mechanism and is weakly pressed against the disc by a spring and is directly connected thereto. Is composed of two linear guides that are moved in opposition to each other in the horizontal direction by the rotation of the rotary guide by an air cylinder, and a strong pressing force for pressing and supporting the disk is provided corresponding to each rotational position of the rotary guide. The disc is generated or relaxed by the strong pressing force. And the weak pressing force to free support,
Alternatively, a disc handling chuck mechanism is characterized in that the pressure on the disc is released. 2. In the above, each one end has a cam floor, each other end is pivotally supported by a common shaft, and is biased by springs in a direction toward each other, and the angle formed by each is made constant by a stopper. It consists of two limited arms, one of which is engaged with a stopper provided on the side surface of the rotary guide to follow the rotation of the rotary guide, and the other of which is suitable for the linear guide. The disc handling chuck mechanism according to claim 1, wherein the disc handling chuck mechanism is provided with a pressing stopper that is provided at intervals and that generates the strong pressing force or a release stopper that releases the disc. 3. A disk is urged by a spring against the disk whose disk surface is vertically supported by the pressing roller with respect to the horizontal spindle, and when the disk is freely supported, the lower part of the disk is The disc handling according to claim 1 or 2, further comprising a support mechanism that presses a side surface upward to support the disc, and releases the support by a pressing roller provided on a side face of the rotary guide when the disc is released. Chuck mechanism.