JP2001023345A - Grinding machine for repairing optical disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grinding machine for repairing optical disk which automatically and continuously repairs many optical disks by grinding. SOLUTION: This grinding machine for repairing optical disk is provided with a first optical disk housing part 10 which houses many optical disks D to be repaired, a rough grinding means 20A, a medium grinding means 20B, a finishing grinding means 20C, a coating means 30 and a second optical disk housing part 60 which houses many repaired optical disks D. Further, the grinding machine for repairing optical disk is provided with an intaking type heat discharging means 40 which discharges heat generated at grinding to the outside of the grinding machine and conveying means 50A, 50B which conveys the optical disks D from the first optical disk housing part 10 to the respective grinding positions, the coating position and the second optical disk housing part 60. Therein, the conveying means 50A, 50B and the respective grinding means 20A, 20B and 20C are operated in cooperation with each other and, therefore, many optical disks D are automatically and continuously repaired by grinding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
Polishing machines for repairing optical disks in a broad sense including not only write-once optical disks referred to as so-called, read-only disks called CD-ROMs, but also so-called magneto-optical disks, in particular, continuously polishing a large number of optical disks The present invention relates to a polishing machine for repairing optical discs for repairing.

[0002]

2. Description of the Related Art Conventionally, an optical disc in which recorded data cannot be read due to some irregularities caused by a scratch on the surface of a transparent synthetic resin substrate through which a laser beam is transmitted can be repaired and read again. Various polishing polishers for repairing optical disks have been proposed (see Japanese Patent No. 2835509, Japanese Patent Application Laid-Open No. 9-223383, etc.).

Each of these polishing machines for repairing optical disks basically includes a disk holder (turntable) for holding an optical disk to be repaired, and a polishing tool for polishing the surface of the optical disk. The grinding tool rotated by the blade slides on the surface of the optical disk and scrapes the surface of the optical disk, so that the irregularities disappear and the smoothness of the surface of the optical disk is restored. It will make it possible.

However, when a plurality of optical discs are polished and repaired using such a conventional optical disc repair polisher, an operator places one disc to be repaired at a predetermined position of the polisher and places the disc in a predetermined position. After the predetermined polishing is completed, the operation of taking out the repaired and polished optical disk from the polishing machine, placing the next optical disk to be repaired at a predetermined position, and the like must be repeated.

If the number of optical discs to be repaired is about several, such an operation is not very troublesome.
It is quite troublesome when it comes to one hundred. Therefore, where a large number of CDs are held and frequently rented, such as a CD rental shop or library, a large number of CDs to be repaired or cleaned must be generated. Conventional repair grinders are very inefficient.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and enables a large number of optical disks to be repaired to be automatically and continuously polished and repaired. It is an object of the present invention to provide a polishing machine for repairing an optical disk capable of preventing an adverse effect on the disk.

[0007]

In order to achieve the above object, an optical disk repair polishing machine according to the present invention automatically stores one optical disk at a time when a large number of optical disks to be repaired are stored in a storage section. It is transported to the polishing position and is polished automatically.When polishing is completed, it is transported to the coating position and coated automatically. When coating is completed, it is automatically transferred to the storage area for storing the optical disk after repair. To be transported. In addition, a suction type heat exhaust means is provided to minimize the temperature rise in the polishing machine during continuous operation.

That is, an optical disk repair polishing machine according to the present invention comprises a first optical disk storage section for storing a large number of optical disks to be repaired, and at least one polishing means for polishing the surface of the transparent synthetic resin substrate of the optical disk. When,
Coating means for coating the polished optical disk, means for transporting one of the optical disks to be repaired from the first optical disk storage section to the polishing means, means for transporting the polished optical disk to the coating means, Means for transporting the optical disk to the second optical disk storage section, wherein the polishing means, the coating means and the respective transport means are operated in cooperation with each other, and the heat generated during polishing is discharged outside the polishing machine. A configuration including an intake-type exhaust heat means (40) is employed.

According to this polishing machine for repairing optical discs, after a large number of optical discs to be repaired are stored in the first optical disc storage section, when a given switch is turned on, many optical discs are continuously and automatically. An optical disk which has been polished and coated, and has been repaired as expected is obtained. Further, during continuous operation, the temperature inside the polishing machine rises due to the heat generated by the rotation of the driving motor in the polishing means and the frictional heat generated at the time of polishing, but the suction type heat discharging means discharges the heat to the outside of the polishing machine. As a result, the temperature rise inside the polishing machine is suppressed, and not only the optical disc is not affected by the temperature rise, but also the powdery polishing dust generated by the polishing is simultaneously discharged to the outside. Clogging is also prevented, and smooth automatic continuous operation is guaranteed.
At least one polishing means may be used, but a plurality of polishing means having different abrasive particle sizes may be arranged in descending order of the particle size. For example, a rough polishing means is provided at a position close to the first optical disk storage portion, a medium polishing means having an abrasive having a smaller particle size than the rough polishing means, and a finish polishing means having an abrasive having a smaller particle size. May be provided, and one optical disk may be polished by these plural polishing means. In addition, even if the optical disc has a plurality of polishing means, the optical disk does not necessarily have to pass through each polishing means, and by giving an instruction before operation, the rough cutting means is skipped, and the medium cutting means-finish means- It is desirable to set a path that can be followed from the rough cutting means to the finishing means by following the path of the coating means or skipping the medium cutting means.

The means for transporting the optical disk may be such that the optical disk is transported from the first optical disk storage section to the second optical disk polishing means via the polishing means by one transport means, but in order to improve the efficiency of the polishing machine. It is desirable to use at least two transport means.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on illustrated embodiments.

First, a description will be given with reference to the schematic views of FIGS. 1 and 2. This optical disk repairing and polishing machine (A) has a box body (9) having an openable and closable lid (9) on the front surface thereof. 8) A first optical disk storage unit (10) for storing a large number of optical disks (D) to be repaired is provided at a left end of the lower front part, and a rough grinding means is provided on the right side of the first optical disk storage unit (10). (20A), medium grinding and polishing means (20B), finish grinding and polishing means (20C), coating means (30) and second
An optical disk storage (60) is provided. Above them, a pair of transporting means (50A) (50B) is provided, and the optical discs (D) are taken out one by one from the first optical disc storage part (10), and each of the polishing means (20A) ( 20
B) It is transported to the polishing position of (20C) and the coating position of the coating means (30), polished and coated, and then transported to the second optical disk storage part (60). Further, polishing means (20A) (20B) (20
Behind C), an air suction type exhaust means (40) is provided to suck and discharge the hot air generated during operation and suck and discharge the polishing waste.

The first optical disk storage section (10) is provided in
As shown in (a), a large number of optical discs (D) and (D)
Positioning columns (11) contacting the outer periphery of the optical disc (D) are arranged upright at equal intervals so that... Positioning pillar (11)
(11) are arranged so as to be in contact with the outer periphery of the optical disk (D) in this way because the first transport means (50
This is to prevent the lowering of the disc holder (51) in (A). Note that this first optical disk storage unit (1
In (0), the optical disk (D) is to be stored with the transparent substrate of the optical disk (D) facing down and the reflective layer side facing up. The first optical disk storage (10)
Is set to be large enough to hold about 200 CDs.

The polishing means includes a rough polishing means (20A);
Medium-sharpening means (20B) and finish-sharpening means (20
C), each polishing means (20A) (20B) (20C)
Have the same configuration except that the size of the abrasive is different. That is, each polishing means (20A) (20B) (20
C) includes a pair of drive motors (21) and (21), and polishing members (24) and (24) rotated by the motors (21) and (21). ) Is the support plate (22)
For each output shaft (21
a) (21a) projects upward from below the support plate (22). At the center of the support plate (22), a column (23) having a hub (23a) fitted at the upper end to fit into the center hole of the optical disk (D) protrudes, and the hub (23a) is inserted into the center hole of the optical disk (D). The position where is fitted is the polishing position (29).

The output shaft (21a) of the motor (21) includes:
A disk-shaped polishing member (24) and a rotating plate for stirring (25) are mounted via a mounting sleeve (26). The polishing member (24) is detachably attached to a disk-shaped support plate (27) integrated with the upper end of the sleeve (26) as shown in FIG. Polishing member (24) and disk-shaped support plate (2
7) have multiple through holes (24
a) (24a), (27a), (27a), etc., and the powder polished and separated from the optical disk (D) is a disc-shaped support plate (27).
It is made to fall below. The stirring rotary plate (25) arranged below the disc-shaped support plate (27) has a plurality of blades (25b) (25) on the upper surface of the substrate (25a).
b) projectingly stirs the air above the stirring rotating plate (25) according to the rotation of the driving motor (21), and passes through the through-hole () of the upper polishing member (24) and the disc-shaped support plate (27). 24a) (24
a)... (27a) The powder falling from (27a)... is directed to the cavity (31) so that the powder collection by the powder collecting means (40) is performed efficiently. Also, scattering prevention walls (28a) and (28b) for powder polished and separated from the disk (D) are provided above and below the stirring rotary plate (25), and slightly obliquely above the periphery of the polishing position (29). Also, a similar powder scattering prevention wall (28c) is provided.

The grain sizes of the abrasives in the rough grinding means (20A), the medium grinding means (20B) and the finish grinding means (20C) are respectively # 100 and # 8 of JIS standard R6001.
00 and # 1400. In addition, each polishing means (20A)
The polishing time for (20B) and (20C) is set to 3 minutes, 2 minutes, and 1 minute for one optical disk.

The coating means (30) is provided for applying silicone for the purpose of imparting further smoothness and glossiness to the optical disc (D) polished by the finish grinding and polishing means (20C). Member (34),
A driving motor (31) for rotating the coating member (34);
A fixed amount dropping device (19) for dropping a predetermined amount of silicone on the coating member (34) is provided. By this coating means (30), a thin film having a thickness of several microns is coated on the substrate surface of the optical disk (D).
The driving motor (31) in the coating means (30) and the structure above the driving motor (31) correspond to the polishing means (20A).
(20B) Same as (20C), integrated with a disk-shaped support plate (37) at the upper end of a mounting sleeve (36) fixed to a driving motor (31), and the coating member (34)
Is detachably attached to the disc-shaped support plate (37).

As shown in FIG. 2, the suction type heat discharging means (40) is provided with a hollow portion (4) provided on the side of the stirring rotary plate (25).
1), a vacuum pump (42) provided at the tip of the cavity (41), and a discharge pipe (43) for discharging the sucked powder to the outside of the box (8). The pipe (43) is connected to a dust collecting container (not shown) outside the box. This suction type exhaust heat means (40) is provided with polishing means (20A) (20B)
There may be a plurality corresponding to (20C) or one common to them.

The transporting means includes a first optical disk storage unit (1
0), rough grinding means (20A) and medium grinding grinding means (20A)
B) The first transporting means (50A) moving between, the medium grinding and polishing means (20B), the finish grinding and polishing means (20C), the coating means (30) and the second moving means between the second optical disk storage part (60). The two transporting means (50B) are identical in structure, and have a disk holder (51) for holding the optical disk (D). ) Is moved up, down, left, and right to perform the above-described conveyance. (Five
8) is a lifting rod for raising and lowering the disk holder (51), and (59) is a rod for moving the disk holder (51) in parallel.

As shown in FIG. 3, the disc holder (51) has a holder disc (52) having a rubber plate (53) adhered to the surface of the disc at the lower end thereof.
An air flow passage (55) communicating with an air flow hole (54) provided in the rubber plate (53) and the holder board (52) is provided. The air flow passage (55) is connected to a suction pipe (56), and the tip of the suction pipe (56) is connected to a vacuum pump (57). By operating the vacuum pump (57), A vacuum is applied between the optical disk (D) and the rubber plate (53) to adsorb the optical disk (D) to the rubber plate (53). Further, the disk holder (51) itself is decelerated by a geared motor (not shown) and rotates horizontally.

In the second optical disk storage section (60), a disk holding column (61) is inserted in the center of the optical disk (D) and inserted through the center hole of the optical disk (D). The optical disk (D) conveyed by 50B) is dropped from above, and the disk holding column (61) is inserted into the center hole of the optical disk (D) to hold the disk (D). In addition, the disc holding column (6
In 1), the upper end is formed in a conical shape so that it can be relatively easily inserted into the center hole of the disk (D).

The method of using the optical disk repairing / polishing machine (A) having the above configuration will now be described.
Open the lid (9) of the box (8) and open the optical disk storage
The optical disk (D) to be repaired is stored in the optical disk (D) with the transparent substrate of the optical disk (D) facing downward and the reflective layer side facing upward. 11)
(11) If you throw them into the space surrounded by (11),
The optical discs (D), (D),... Are automatically stacked in an orderly manner.

Next, the cover (9) is closed, the switch is turned on, and the optical disk repairing polisher (A) is operated. The operating and operating states are shown in FIGS.
Description will be made based on (h).

When the switch is turned on, first, the first transport means (50A) operates, and in FIG. 6 (a), the disk holder (51) of the first transport means located above the optical disk storage section (10). ) Descends, and the rubber plate (53) comes into contact with the uppermost optical disc (D). At this time or before that, the vacuum pump (57) of the first transport means (50A) is operated, and the uppermost one optical disk (D) is sucked into the disk holder (51). When the optical disk (D) is attracted to the disk holder (51), the disk holder (51) is moved above the rough grinding and polishing means (20A), and the optical disk (D) is also transported above the rough grinding and polishing means (20A). You. Then, from this height position, the disc holder (51) gradually descends, the center hole of the optical disc (D) is fitted to the hub (23a) of the support (23), and the optical disc (D) is polished to the polishing member (24). ) Lightly press against (24). Then, the polishing members (24) and (24) driven by the driving motors (21) and (21) of the polishing means (20) also rotate, and the substrate of the optical disk (D) is polished. And it is polished and peeled off. FIG. 6B shows the state during the rough polishing, in which the second transport means (50B) is stationary on the finish polishing means (20C). The driving motors (21) and (31) of the polishing means (20B) and (20C) other than the rough polishing means (20A) and the coating means (30) are all in a stopped state. In FIG. 6 (b), the arrow shown on the rough grinding means (20A) indicates that the drive motor (21) is being driven, and FIGS. Similar arrows are used to indicate that the drive motors (21), (21), (31) of the means (20B) (20C) and the coating means (30) are being driven.

The polishing swarf generated by the polishing by the rough grinding and polishing means (20A) drops downward through the through-holes (24a) and (27a) of the polishing member (24) and the disk-shaped support plate (27) and is stirred at the same time. Then, the suction type heat exhausting means (40) sucks the air whose temperature has been increased by the heat generated during polishing and also sucks the polishing dust, and the polishing dust is collected in an external dust collecting container. Hereinafter, polishing swarf generated by the polishing by the medium-sharpening and polishing means (20B) and the finish-sharpening and polishing means (20C) is similarly collected in an external dust collecting container by the suction-type exhaust heat means (40).

When the rough grinding and polishing is completed, the drive motor (21) of the rough grinding and polishing means (20A) stops, and the disk holder (51) of the first transport means (50A) sucks the optical disk (D). As it rises and moves to above the medium grinding and polishing means (20B), the medium grinding and polishing means (20B)
It descends to the polishing position of B). Then, the drive motor (21) of the medium grinding and polishing means (20B) operates to start the medium grinding and polishing. FIG. 6 (c) shows the state during the middle grinding and polishing, in which the second transport means (50B) is still stationary on the finish grinding means (20C).

When the above-mentioned middle grinding and polishing is completed, the drive motor (21) of the middle grinding and polishing means (20B) stops, and
The vacuum pump (57) of the first transfer means (50A) stops,
The suction of the optical disk (D) by the disk holder (51) is released, and the disk holder (5) of the first transport means (50A) is released.
In 1), the optical disk (D) is moved above the first optical disk storage section (10) while leaving the optical disk (D) at the polishing position (29) of the medium grinding and polishing means (20B). On the other hand, the second transport means (50B)
As shown in FIG. 6D, the disk holder (5
After 1) moves from the position above the finish grinding / polishing means (20C) to the position above the middle grinding / polishing means (20B), it descends to the polishing position of the medium grinding / polishing means (20B). And the second
The vacuum pump (57) of the transfer means (50B) is operated to place the optical disc (D) at the polishing position on the disc holder (5B).
The disk holder (51) of the second transport means (50B) moves above the finish grinding and polishing means (20C) while being attracted to 1).

Next, the disk holder (51) of the second transporting means (50B) which has been moved above the finish grinding / polishing means (20C).
Then, when the disk is lowered to the polishing position (29) of the finish grinding / polishing means (20C), as shown in FIG. 6 (e), the drive motor (21) of the finish grinding / polishing means (20C) is driven to drive the optical disc ( D) finish polishing is performed. On the other hand, the first transport means (50) that has moved above the first optical disc storage section (10).
After the disk holder (51) of A) moves, it descends.
The optical disk is picked up, raised, moved upward from the rough grinding and polishing means, and then moved down. This series of operations is the same as the operations in FIGS. 6A and 6B.

When the finish grinding and polishing are completed, as shown in FIG. 6 (f), the second transport means (50B)
Transports the optical disk (D) to the coating position of the coating means (30) and starts coating.
When the coating is completed, the second conveying means (50
As shown in FIG. 6 (g), the disk holder (51) of FIG. 6A moves horizontally to the upper side of the second optical disk storage part (60) while holding the optical disk (D), and moves to the center of the disk (D). When the hole moves to just above the disk holding column (61), the lowering of the disk holder (51) starts, and the center hole of the disk (D) moves to the disk holding column (61).
When the vacuum pump (57) of the second transporting means (50B) is stopped by descending to the position facing the upper end of the second transport means (50B). When the suction of the disc (D) by the disc holder (51) is stopped, the disc (D) separates from the disc holder (51) and is inserted into the center hole of the disc (D).
Falls downward so as to be relatively inserted, and is stored in the second optical disk storage part (60).

During this time, the disk holder (51) of the first transfer means (50A) is moved from the rough grinding means (20A) to the medium grinding means (20B) as shown in FIGS. 6 (f) to 6 (h). The optical disk returns to the position above the first optical disk storage section (10), and the next optical disk (D3) is sucked. The second
Above the optical disk storage section (60), the disk holder (51) of the second transporting means (50B), which stopped the suction of the optical disk (D), is subjected to the medium grinding and polishing means (20B) as shown in FIG. , And the intermediate grinding is completed first, and the optical disc (D2) left at the polishing position is sucked. Thereafter, the first transport means (50A) and the second transport means (50B) repeatedly perform the operations shown in FIGS. 6F to 6H to polish a large number of optical disks (D) to be repaired. The repair is automatic and continuous.

Then, the first transport means (50A)
Optical disk (D) stored in optical disk storage section (10)
A sensor (not shown) for detecting the presence or absence of the optical disk (D) is provided, and when the polishing of a large number of optical discs (D) initially stored is completed, the sensor is driven by the optical disc (D) in the first optical disc storage section (10). ), The operation of the first transporting means (50A) and the operation of the polishing machine (A) for repairing the optical disk are stopped.

[0032]

As described above, according to the present invention, the optical disk repair polishing machine (A) according to the present invention comprises an optical disk (D) to be repaired.
A first optical disk storage part (10) for storing a large number of optical disks, at least one polishing means (20C) for polishing the surface of the transparent synthetic resin substrate of the optical disk (D), and coating the polished disk substrate surface A coating unit (30), a unit (50A) (50B) for transferring one optical disk (D) to be repaired from the first optical disk storage unit (10) to the polishing unit (20C), and a polished optical disk ( Means (50) for transporting D) to the coating means (30)
B), and means (50B) for transporting the coated optical disk (D) to the second optical disk storage part (60). The polishing means (20C), the coating means (30), and each transport means (50A) ) (50B) are operated in cooperation with each other, so that a large number of optical disks (D) to be repaired are stored in the first optical disk storage section (10) in advance, and this optical disk repair polishing machine is used. By simply operating (A), repair and polishing can be performed automatically and continuously.

In addition, since the suction type heat discharging means (40) for discharging the heat generated during polishing to the outside of the polishing machine is provided, the temperature rise inside the polishing machine is suppressed, and the data of the optical disc (D) due to the heat is suppressed. In addition to preventing destruction, the powdered polishing dust generated by the polishing is simultaneously sucked and discharged to the outside.
Can be prevented, and smooth continuous operation can be ensured.

The polishing means comprises a rough polishing means (20A)
Medium-sharpening means (20B) and finish-sharpening means (20
C), one optical disc (D) can be efficiently polished and repaired by passing one optical disc (D) through each of the polishing means (20A), (20B), and (20C). By setting the program of (50B) in advance, more efficient repair polishing can be performed by skipping one or two polishing means according to the degree of damage to the optical disk.

A first transporting means for transporting the optical disk (D) from the first optical disk storage part (10) to the rough grinding / polishing means (20A) and from the rough grinding / polishing means (20A) to the medium grinding / polishing means (20B); (50A) and the finish grinding / polishing means (20B) from the medium grinding / polishing means (20B).
C), and a second transport means (50B) for transporting from the finish grinding / polishing means (20C) to the coating means (30) and from the coating means (30) to the second optical disk storage part (60). More efficient optical disk repair polishing can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an embodiment of an optical disk repair polishing machine according to the present invention.

FIG. 2 is a schematic side view of the same.

FIG. 3 is a side view showing a cross section of a part of the polishing means and a disk holder.

4A is a schematic plan view of a first optical disk storage part, and FIG. 4B is a schematic plan view of a second optical disk storage part.

FIG. 5 is a plan view of a disk-shaped support plate of the polishing means.

FIG. 6 is a schematic explanatory view showing an operation state of the polishing machine for repairing an optical disk according to the present invention.

[Explanation of symbols]

 A: Polishing machine for repairing optical disc D: Optical disc 10: First optical disc storage section 20A: Roughing polishing means 20B: Medium polishing polishing means 20C: Finishing polishing means 30 ... Coating means 40: Inlet heat discharging means 50A: First transport Means 50B Second transport means 60 Second optical disk storage

Claims (3)

[Claims] 1. A first optical disk storage section (10) for storing a large number of optical disks (D) to be repaired, and at least one polishing means (20C) for polishing a transparent synthetic resin substrate surface of the optical disk (D). ), Coating means (30) for coating the polished disk substrate surface, and means for transferring one optical disk (D) to be repaired from the first optical disk storage part (10) to the polishing means (20C) ( Means for transferring the polished optical disk (D) to the coating means (30); means for transferring the coated optical disk (D) to the second optical disk storage part (60) (50B), wherein the polishing means (20C), the coating means (30), and the transport means (50A) (50B) are operated in cooperation with each other, and heat generated during polishing is polished by the polishing machine. Optical disc repair grinding machine, characterized by comprising an intake type exhaust heat means for discharging (40) the part. 2. The polishing means is a rough polishing means (20A).
2. A polishing machine for repairing an optical disk according to claim 1, comprising: a medium-sharpening and polishing means (20B); and a finish-sharpening and polishing means (20C). 3. A transport means for transporting the optical disk (D) from the first optical disk storage section (10) to the rough grinding / polishing means (20A) and from the rough grinding / polishing means (20A) to the medium grinding / polishing means (20B).
First transport means (50A) for transporting to optical disk (D)
From the medium grinding and polishing means (20B) to the final grinding and polishing means (20
C), a second transport means (50B) for transporting from the finish grinding / polishing means (20C) to the coating means (30) and from the coating means (30) to the second optical disk storage part (60). The polishing machine for repairing optical disks according to the above.