JPH04188448A - Inspecting apparatus for optical disk - Google Patents

Abstract

PURPOSE:To make it possible to exclude the different kind of a disk positively even if the different kind of the disk is mixed in a lot by reading the read-in data of an optical disk for every disk, and comparing the data with normative read-in data. CONSTITUTION:At first, the read-in data in a control disk in a CD-ROM drive unit are read out. The data are stored in a judging and processing part 52 as the normative read-in data. Then, in the judging and processing part 52, the read-in data which are read out of an optical disk 3 are compared with the normative read-in data. Whether the optical disk 3 in the CD-ROM drive unit 44 has the same read-in data as those of the control disk or not is judged. The result of the judgment is displayed on a CRT display 14. When the optical disk 3 which has passed the inspection reaches a station D, the disk is stacked on a flange 28 of a vacant stacker 25. At this time, the contents of the records of the optical disks constituting the lot are written in the control disk, and confusion does not occur in handling.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to an automatic inspection device for optical discs.

(b) As a conventional technical information recording medium, the role of optical discs is becoming increasingly important. During production, we incorporate various inspection devices into the production line to control quality, as normal defects, such as large racks and voids, cannot be detected with the naked eye. Tokuko Sho 6:2-211
One example is the device described in Japanese Patent No. 87, which displays the defect distribution on the recording surface.

(c) Problems to be Solved by the Invention] A compact disc (CD) type optical disc has lead-in data recorded as an index of the content. The purpose of the present invention is to provide a device that checks lead-in data to determine whether different types of 6's have been mixed into the data.

(d) Means to solve the problem In the present invention, the inspection device was configured as follows.

a. A stacker that holds multiple optical discs of the same type as one lot.

(b) A management disk which is placed at the top of the lot and has the recorded contents of the optical disks constituting the lot written on its surface; and (b) has the same shape as the optical disk.

c. Means for separating management disks and optical disks one by one from the top of the lot.

d. A transport means for holding the separated management disk and optical disk at a predetermined interval and sending them to a reading station.

e. reading means disposed in the reading stage engine and reading lead-in data from the management disk or optical disk within the transport means;

f. A determination processing means for storing lead-in data of the management disc and comparing it with lead-in data from the optical disc.

g. Display means for the determination result by the determination processing means.

h. Means for removing the optical discs that have passed the inspection from the transport means and stacking them on an empty stacker.

i. A management disk suspension that removes the management disk from the transport means and leaves it stationary while reading lead-in data for all optical discs in the lot, and returns the management disk to the transport means so as to be the last one in the lot. unit.

In addition, we propose the following structure for the above item 1.

r′, based on the lead-in data of the management disk,
Judgment processing means for comparing standard lead-in data corresponding to the lot with lead-in data from the optical disc.

(e) The working disk lot is separated one by one, with the management disk at the beginning, and sent to the reading station by the transport means. In the reading station, the reading means first reads lead-in data from the management disk, and the zero determination processing means stores this lead-in data as standard lead-in data.

Alternatively, based on this lead-in data, the lower 1
・The management disk from which the lead-in data has been read, extracts the standard lead-in data corresponding to the
The management disk suspension unit removes the optical disks from the transport means and makes them stay outside the transport means until all of the optical disks constituting the lot have been inspected. Now, the optical disc is sent to a reading station following the management disc, and the lead-in data is read out. By comparing the readout result with the reference data, it is determined whether the disk is a correct member of the lot, and the result is communicated to the operator by the display means. Optical discs that have passed the inspection are removed from the transport means and then stacked on an empty stacker. The management disk kept outside the transport means is returned to the transport means after the last optical disk has passed, and as a result, the management disk is again placed at the top of the lot of inspection department disks, and from then on It also plays a role in lot identification during the process.

(F) First Embodiment FIGS. 1 and 2 show the configuration of an optical disk inspection apparatus 1. The optical disk inspection apparatus 1 has a base 2, and a control section 10. Components such as a supply section 20, an inspection section 40, and a discharge section 60 are attached. In this embodiment, the optical disc 3 is a CD-ROM. Next, each component will be explained.

One control part one control fi1 part 10 is put together in console 11 on base 2. The control device 1 constitutes the control section 10.
2 (not shown in FIGS. 1 and 2; see FIG. 3), manual operation section 13, CRT display 14. This is a keyboard 15. The control device 12 consists of a sequencer or a microcomputer, and is installed inside the console 11 or inside the base 2.

One supply unit One supply unit 20 occupies the entirety of one long side and the middle of one short side of the base 2. This consists of a supply conveyor 21 installed along the long side of the base 2, an empty stacker discharge traverser 22 installed on the short side of the base 2, and a These are a leveler 23 for uninspected discs installed at a corner, and a big-and-place unit 24 installed near the leveler 23 for uninspected discs. The supply conveyor 21 carries a stacker 25 shown in FIG. 5. The stacker 25 consists of a disc-shaped base 26, a ball 27 rising from the center of the base 26, and a flange 28 fitted into the ball 27 so as to be able to move up and down. Pass the ball 27 through the center hole of the optical disc 3,
They are stacked one after another on the flange 28. Flange 28
The upper surface of the optical disc 3 is raised at the center and supports only the non-recording part of the optical disc 3 and does not touch the recording part.The management disc 4 is placed on the top of the optical disc 3.

The management disk 4 has the same shape and standard as the optical disk 3, and has the same lead-in data as the optical disk 3. The recorded contents of the optical disc 3 are written on the surface of the management disc 4. The description may be made by printing or by pasting an adhesive label 5 6 , so that the operator can visually check the recorded contents of the optical disc 3 . A spacer portion 29 (see FIG. 6) is formed at the center of the lower surface of the flange 28 to ensure a gap between it and the base 26. The uninspected disk leveler 23 has a lift plate 30 that fits under the flange 28. The lift plate 30 is cut out at a right angle and has an L-shape in order to allow the stacker 25 to enter from the longitudinal direction and send it out in a direction perpendicular to the longitudinal direction. Two guide rods 31 support the lift plate 30, and a combination of a feed screw and an electric motor (not shown) moves the structure up and down. Discharge section 60
The scraper 63 for the inspected disc also has the same structure. The big and place unit 24 also has the same structure as the big and place unit 64 of the discharge section 60, and as shown in FIG.
It consists of an arm 33 in the shape of a balance rod having a diameter of 2, and a ball 34 that gives the arm 33 two types of movement: repetitive rotation and up and down movement.

- Inspection section 1 The inspection section 40 has an index table 4 with an indexing angle of 90°.
1 as a transport means. Index table 41
has a total of four openings 42 for receiving the optical disc 3, one for each index circumference. Inside each opening 42, a sixth
As seen in the figure, holding means 43 for the optical disc 3 or management disc 4 are provided. The optical disk 3 or management disk 4 held by the holding means 43 can be pulled out either upward or downward by applying force. The opening 42 sequentially goes around stations A, B, C, and D shown in FIG. Station A corresponds to big and place unit 24 and station D corresponds to big and place unit 64. Station B is a reading station, and a CD-ROM drive unit 44 is installed here. The CD-ROM drive unit 44 is located below the index table 41, and a button 45 is arranged above the index table 4I so as to face the CD-ROM drive unit 44. The bushing 45 consists of an air cylinder 46 and a protruding rod 47 that is raised and lowered by the air cylinder 46. The CD-ROM drive unit 44 includes a determination processing section 52 shown in FIG.
It has a typical microcomputer configuration such as PU and memory. A management disk suspension unit 48 is placed at station C. The management disk suspension unit 48 has an arm 5 having a suction section 49 at the tip.
0 and a ball 51 that supports the arm 50 and moves it up and down.

- Discharge section - The discharge section 60 consists of a dump conveyor 61, an empty stacker supply traverser 62, a scraper 63 for inspected disks, and a big-and-place unit 64, and these elements are arranged so as to be symmetrical with the supply section 20. ing.

-Operation- When the stacker 25 is placed at the end of the supply conveyor 21, the stacker 25 is carried to the uninspected disk leveler 23 and positioned by a stopper (not shown). Lift plate 3
At this time, the flange 28 of the empty stacker 25 is lifted up to the uppermost level in the inspected disc scraper 63 which is inserted under the flange 28. This is the state shown in FIG. Next, the big and place unit 24 performs the well-known operation of lowering the arm 33 to attract the target object, raising the arm 33, rotating the arm 33 by 180 degrees, and lowering the arm 33 again. Management disk 4 in opening 42
, the index table 41 index-rotates, and the big-and-place unit 24 repeatedly rotates and moves up and down, so that the optical disks 3 that are alternately attracted to the suction tools 32 at both ends of the arm 33 are attached to the management disk 4. Subsequently, the openings 42 are filled one after another.

Each time a disk is picked up, the lift plate 30 of the leveler 23 for uninspected disks is raised by the thickness of the disk to keep the top surface of the lot of optical disks 30 at a constant level.
When the management disk 4 reaches Yomihata Station B,
Butusha 45 pushes down management disk 4, CI)-R
The catch 53 that has risen from the OM drive unit 44 picks it up (Fig. 7), and then the catch 53 descends and picks up the CD.
- The 0 determination processing section 52 from which the lead-in data of the management disk 4 is read in the ROM drive unit 44 stores this as standard lead-in data. The management disk 4 from which the lead-in data has been read is returned to the opening 42 again while being sandwiched between the seat 53 and the bushing 45, and is sent to the station C by the rotation of the index table 41. The management disk 4 that has arrived at station C is lifted into the air by the management disk suspension unit 48. At this time, the first optical disc 3
has arrived at reading stage B, and as in the case of management disk 4, CI)-R0M drive unit 4
4, the lead-in data is read out (Fig. 8).
The determination processing unit 52 compares the lead-in data read from the optical disc 3 with the standard lead-in data, and determines whether the optical disc 3 in the CI)-ROM drive unit 44 has the same lead-in data as the management disc 4. The result of the determination as to whether the optical disc 3 is the correct type is displayed on the CRT display 14. It is also possible to add an audio display. The optical disc 3 that has passed the inspection is inserted into the opening 4 again while being sandwiched between the catch 53 and the bushing 45.
2 and moves as the index table 41 rotates.

When station D is reached, the big-and-place unit 64 takes out the optical disc 3 from the index table 41 and stacks it on the flange 28 of the empty stacker 25 waiting at the tongue 63 for inspected discs.

Each time a disc tray is picked up, the inspected disc scraper 63 lowers the lift plate 30 by the thickness of the optical disc 3 (Fig. 9), and the processing unit determines that the optical disc 3 is of a different type. 52, the inhibit I device 12 stops the automatic operation of the optical disk inspection device 1 and displays a message to that effect on the CRT display 14. A warning sound and a warning light may be used together. 0 The operator operates the manual operation unit 13 to carry the optical disc 3 in question to station D, takes it out without mixing it with the lot of good products, and then puts the device into automatic operation. Bring it back. Now, when the last disk of the lot passes through station C (FIG. 1O), the if management disk the suspension unit 48 fits the management disk 4 that had been held until then into the subsequent opening 42 (the 11th
If the big-and-place unit 64 continues its work, the management disk 4 will be placed at the top of the lot again. The inspection for this lot is now complete, and the stacker 25 is removed from the stacker 63 by the discharge conveyor 61 for the inspected disks. The empty stacker 25 on the side of the uninspected disk leveler 23 is pushed out by the empty stacker exhaust pressure traverser 22 and delivered to the empty stacker supply traverser 62. The empty stacker supply traverser 62 sends the empty stacker 25 to the vera 63 for inspected disks.

Now that the new lot of optical disks 3 is ready to be inspected, FIG. 4 diagrammatically shows the flow of the management disks and optical disks as explained above, including the related components.

(G) Second Embodiment In the above embodiment, the management disk 4 had the same lead-in data as the optical disk 3 of the lot. That is, 301 optical discs were taken out as samples, recording contents were written on them by printing, labeling, etc., and they were used as management discs 4. However, the lead-in data of the management disk 4 does not necessarily have to be the same as that of the optical disk 3. It is also possible to use a disk with different lead-in data as the management disk 4. In this case, , a required number of standard lead-in data is stored in advance in the memory of the determination processing unit 52, and furthermore, the correspondence between each standard lead-in data and the management disk side lead-in data is determined according to the necessary combinations. In other words, the lead-in data on the management disk side will be used as a key to extract the standard lead-in data.In this way, you can use the same management disk 4 with only the label replaced. Therefore, it can be used as a management disk for another lot, and there is no need to extract some of the newly produced optical disks for use as a management disk.

(h) Effects of the invention According to the present invention, the lead-in data of an optical disc can be
Since each disc is read and compared with the standard lead-in data, even if a different type of disc is mixed into a lot, it can be definitely eliminated. In addition, a control disk is attached to each lot of optical disks, and the lead-in data contained in the control disk is used as the standard lead-in data, or the standard lead-in data is retrieved using the lead-in data of the control disk as a key. Even if there is a disc, the recorded contents of the optical discs that make up the lot are recorded on the management disc so that there is no mistake in comparing it with the standard lead-in data. It does not cause any confusion in handling.
Also, the shape of the management disk is the same as the optical disk,
Easy to handle. Furthermore, after the inspection is completed, the management disk is returned to the top of the lot, so that process management can be performed using the management disk as an index in subsequent processes as well.

[Brief explanation of the drawing]

The figures show an embodiment of the optical disc inspection apparatus of the present invention, in which Fig. 1 is a front view, Fig. 2 is a top view, Fig. 3 is a connection configuration diagram of each part, and Fig. 4 is an explanatory diagram of the flow of a disc. FIG. 5 is a perspective view showing a stacker holding optical disks and part of a five-leveler, and FIGS. 6 to 11 are cross-sectional views illustrating the transfer operation of a series of disk holders to an index table. 1. Optical disc inspection device, 3. Optical disc, 4
・Management disk, 25...Stacker, 23.24...
- A leveler for uninspected discs and a pick-and-place unit, 41, which constitute means for separating optical discs one by one; - Index table (transfer means), 44.
・CD-ROM drive unit (means for reading lead-in data), 52...judgment processing section (judgment processing means) 14・CRT display (means for displaying judgment results),
63.64 - A scraper and big-and-place unit for inspected disks, 48-management disk suspension unit, which constitute means for lifting optical disks that have passed the inspection into an empty stacker.

Claims (1)

[Claims] (1) An optical disc inspection device having the following configuration. a. A stacker that holds multiple optical discs of the same type in one lot. b. placed at the top of the lot and having recorded contents of the optical discs constituting the lot written on the surface;
A management disk with the same shape as an optical disk. c. Means for separating management disks and optical disks one by one from the top of the lot. d. A transport means for holding the separated management disk and optical disk at a predetermined interval and sending them to a reading station. e. reading means disposed at the reading station and reading lead-in data from the management disk or optical disk in the transport means; f. A determination processing means for storing lead-in data of the management disc and comparing it with lead-in data from the optical disc. g. Display means for the determination result by the determination processing means. h. Means for removing the optical discs that have passed the inspection from the transport means and stacking them on an empty stacker. i. A management disk suspension that removes the management disk from the transport means and leaves it stationary while reading lead-in data for all optical discs in the lot, and returns the management disk to the transport means so as to be the last one in the lot. unit. (2
) An optical disc inspection device with the following configuration. a. A stacker that holds multiple optical discs of the same type as one lot. b. placed at the top of the lot and having recorded contents of the optical discs constituting the lot written on the surface;
A management disk with the same shape as an optical disk. c. Means for separating management disks and optical disks one by one from the top of the lot. d. A transport means for holding the separated management disk and optical disk at a predetermined interval and sending them to a reading station. e. reading means disposed at the reading station and reading lead-in data from the management disk or optical disk in the transport means; f. Determination processing means for extracting standard lead-in data corresponding to the lot based on the lead-in data of the management disc and comparing it with the lead-in data from the optical disc. g. Display means for the determination result by the determination processing means. h. Means for removing the optical discs that have passed the inspection from the transport means and stacking them on an empty stacker. i. A management disk suspension that removes the management disk from the transport means and leaves it stationary while reading lead-in data for all optical discs in the lot, and returns the management disk to the transport means so as to be the last one in the lot. unit.