JP2506430B2 - Optical disk manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an optical disk manufacturing apparatus.

(B) Conventional Technology An optical disk is constructed by bonding two disk substrates each having a recording layer on one side.
For this purpose, for example, as shown in Japanese Patent Laid-Open No. 61-80534, an adhesive is sandwiched between the two disk substrates and the two disk substrates are pressed together to perform the bonding.

(C) Problems to be Solved by the Invention However, in the conventional method for manufacturing an optical disk as described above, a troublesome work of applying an adhesive to the disk substrate is required, and moreover, a uniform adhesive film can be formed. It was difficult, and air bubbles and the like remained at the joint.
Also, when the disk substrate is pressed, the adhesive will stick out,
Since burr is generated, deburring work is required. Therefore, it has been impossible to efficiently manufacture an optical disc with an automated device.

The present invention aims to solve the above problems.

(D) Means for Solving the Problems The present invention solves the above problems by configuring an optical disk manufacturing apparatus capable of continuously executing the step of bonding two disk substrates using a double-sided adhesive sheet. That is, in the optical disk manufacturing apparatus according to the present invention, the release film (41) on one surface side of the double-sided adhesive sheet (85) is peeled off from one surface side of the disk substrate (80) and bonded together,
Then, the peeling film (39) on the other surface side of the double-sided adhesive sheet is peeled off, and another disc substrate (80 ') is attached to the peeling film (39), which is intended for an optical disc manufacturing apparatus for manufacturing an optical disc. And upper mold (35) and lower mold (34) that can press double-sided adhesive sheet
And a mold opening / closing device for opening and closing the upper mold and the lower mold (14)
A substrate supply device (12) for supplying the disk substrate (80, 80 ') to the upper mold, and a release film (41) on the upper surface side for the lower mold.
Double-sided adhesive sheet supply device (16) for supplying peeled double-sided adhesive sheet (85), vacuum press device (10), and upper and lower molds can be moved between the mold opening / closing device and the vacuum press device Type moving device (18), the semi-finished product (48) to which one disk substrate and the double-sided adhesive sheet are adhered, is taken out from the lower mold and inverted upside down, and the remaining release film (39) is peeled back to the lower mold. It is characterized by having a semi-finished product reversing / peeling film peeling device (22) and a finished product take-out device (92) for taking out a finished product optical disc (90) from a lower mold. The reference numerals in parentheses indicate the corresponding members in the embodiments described later.

(E) Action The disk substrate is supplied by the substrate supply device to the upper mold installed in the mold opening / closing device. Further, the double-sided adhesive sheet from which the upper release film is peeled off is supplied to the lower mold by the double-sided adhesive sheet supply device. Then, the mold opening / closing device closes the mold, and the upper mold and the lower mold are moved into the vacuum press device by the mold moving device. A pressure is applied between the upper mold and the lower mold in a vacuum state by the vacuum press device to bond the disc substrate and the double-sided adhesive sheet. Then, the upper mold and the lower mold are returned to the mold opening / closing device again, and the molds are opened. The semi-finished product in which the disc substrate and the double-sided adhesive sheet have been joined is temporarily taken out by the semi-finished product reversing / peeling film peeling device, inverted upside down, and the remaining peeling film is peeled off. The semi-finished product with the release film peeled off is returned to the lower mold with the release film peeled surface facing upward. On the other hand, another disk substrate is supplied to the upper mold by the substrate supply device. Then
The mold is closed, and the upper mold and the lower mold are again moved into the vacuum press device. The vacuum press machine bonds the disk substrate and the double-sided adhesive sheet, which are supplied later, to each other. Then, the upper mold and the lower mold are returned to the mold opening / closing device, and after the mold is opened, the finished product take-out device takes out the optical disc as a finished product. After all, the two disk substrates are
It is joined by a double-sided adhesive sheet in which the adhesive is evenly applied on both sides in advance. The joining work is performed in a continuous process to efficiently manufacture the optical disc. Further, since the double-sided adhesive sheet and the disk substrate are joined by the vacuum pressing device, air bubbles do not remain.

(F) Example FIG. 1 shows the structure of the entire optical disk manufacturing apparatus. This optical disk manufacturing apparatus includes a vacuum press device 10 and a mold opening / closing device.
14, a double-sided adhesive sheet supply device 16, a mold moving device 18, a conveying device 20, a semi-finished product reversing / peeling film peeling device 22, and the like. It should be noted that one vacuum press device 10 is provided in the center of the device, and two sets of the above devices other than the vacuum press device 10 are arranged on both sides of the vacuum press device 10.

FIG. 2 shows the substrate supply device 12 and the mold opening / closing device 14. The substrate supply device 12 is composed of a transfer device 20. In addition to being used as the substrate supply device 12, the transport device 20 is a semi-finished product in which the cut double-sided adhesive sheet 85 and the disc substrate 80 and the double-sided adhesive sheet 85 are bonded, as described later.
48, It is also used to transport the finished optical disc 90. The transfer device 20 is movable in the horizontal direction along the guide member 30 by the ball screw mechanism, and also has the lifting device 31 and the reversing device 32, which allows the suction device 33 to move up and down and invert 180 degrees. It is possible. Lower mold 3 for mold opening / closing device 14
4 and the upper die 35 can be attached, and the upper die 35 can be moved up and down by a fluid pressure cylinder 36.

FIG. 3 shows the double-sided adhesive sheet feeding device 16. The double-sided adhesive sheet 37 stored in the folded state is the conveyor.
It can be transported by 38. The double-sided adhesive sheet 37 is composed of a tape-shaped release film 39, an adhesive 40 provided in a circular shape on the release film 39, and a circular release film 41 provided on the adhesive 40. A feeding device for the adhesive tape 42 is provided so as to come into contact with the upper surface of the double-sided adhesive sheet 37 and to be fed in synchronization therewith. That is, the adhesive tape 42 unwound from the reel 43 is the double-sided adhesive sheet.
It is configured to run while being pressed against the upper surface of 37 and to be wound up by the take-up reel 44. Thereby, the peeling film 41 can be peeled off. A cutter 45 is provided to cut the double-sided adhesive sheet 37 from which the release film 41 has been removed into a predetermined length. The cut double-sided adhesive sheet is indicated by reference numeral 85.

FIG. 4 shows the vacuum press device 10 and the mold moving device 18.
The arm 46 that constitutes the mold moving device 18 includes a fluid pressure cylinder 47.
It is possible to move between the position on the die opening / closing device 14 side and the position on the vacuum press device 10 side. The vacuum press device 10 can apply a pressure to the lower mold 34 and the upper mold 35 in the vacuum chamber.

FIGS. 5 and 6 show a semi-finished product reversing / peeling film peeling device 22. Semi-finished product reversing / peeling film peeling device 22
Has a transport device 20 (which is the same as that shown in FIG. 2), a semi-finished product holding device 95, a peeling arm 49, and a semi-finished product returning device 51. The semi-finished product 48 can be set on the semi-finished product holding device 95, and the peeling film 39 can be peeled off by the peeling arm 49 in this position. The peeling arm 49 is capable of grasping the release film 39 by the chuck 50 at the tip and driven by the cylinder 49 'to move. FIG. 6 shows a semi-finished product returning device 51. The semi-finished product returning device 51 has a hand 52 capable of gripping the semi-finished product 48 ′ from which the release film 39 has been peeled off, and the hand 52 can be moved up and down by a lifting device 53.
Further, it can move in the horizontal direction along the guide member 54.

FIG. 9 shows a finished product take-out device 92. The finished product take-out device 92 is composed of the carrier device 20 (which is the same as that shown in FIG. 2, FIG. 5 and the like).
90 can be transferred.

Next, the operation of this optical disk manufacturing apparatus will be described. First, the disc substrate 80 is supplied to the upper mold 35. That is, as shown in FIG. 2, the disk substrate 80 is installed at a position where it can be sucked by the suction device 33 of the transfer device 20 at the position A (the automatic feeder can be used for this purpose). The disk substrate 80 is sucked by the suction device 33 and lifted by the lifting device 31. Next, the reversing device 32 is actuated to invert 180 degrees, so that the disk substrate 80 faces upward. On the other hand, at this point, the mold opening / closing device 14
The upper mold 35 is rising. The carrier device 20 moves from the position A to the position B to the position C. Transport device 20 is C
After moving to the position, the disk substrate 80 is set on the upper mold 35.

Next, the double-sided adhesive sheet 85 is supplied as shown in FIG. That is, the double-sided adhesive sheet 37 is fed by the belt conveyor 38 by a predetermined amount. At this time, the circular release film 41 on the upper surface side is adhered to and removed from the adhesive tape 42. The peeled release film 41 is wound around the reel 44. The double-sided adhesive sheet 37 from which the release film 41 has been peeled off is cut by the cutter 45 into a square state, and the cut double-sided adhesive sheet 85 is adsorbed by the adsorbing device 33 of the conveying device 20 that has returned to the position B. Can be lifted. The transport device 20 moves to the position C again, and then descends to set the double-sided adhesive sheet 85 on the lower mold 34.

Next, as shown in FIG. 4, adhesion is performed by the vacuum press device 10. That is, the upper mold 35 with the disk substrate 80 set is lowered onto the lower mold 34 with the double-sided adhesive sheet 85 set. The lower mold 34 is an arm 46.
It is installed on top. When the upper die 35 comes into contact with the lower die 34, that is, when the die closing is completed, the upper die 35 is separated from the mechanism for moving the upper die 35 up and down and moves together with the lower die 34. Next, the fluid pressure cylinder 47 is operated, the arm 46 is rotated, and the upper die 35 and the lower die 34 are transferred to the vacuum chamber of the vacuum press device 10. In the vacuum chamber of the vacuum press device 10, the upper mold 35
In addition, a pressing force acts between the lower mold 34 and the lower mold 34 in a vacuum state. As a result, the disc substrate 80 and the double-sided adhesive sheet 85 are adhered. After bonding, open the vacuum chamber and rotate the arm 46 in the opposite direction to the above case,
35 and the lower mold 34 are returned to the mold opening / closing device 14 side. Then
Raise the upper mold 35. As a result, the semi-finished product 48 in which the disk substrate 80 and the double-sided adhesive sheet 85 are bonded onto the lower mold 34.
(See FIG. 5) will be left.

Next, as shown in FIG. 5, the semi-finished product 48 is transferred, inverted, and the peeling film 39 is peeled off.
That is, the semi-finished product 48 is adsorbed by the adsorption device 33 of the carrier device 20, the adsorption device 33 is then moved up, and the adsorption device 33 is inverted 180 degrees. Next, the transport device 20 moves to set the semi-finished product 48 at the E position on the semi-finished product holding device 95. In this state, the disk substrate 80 is located on the lower side and the release film 39 is located on the upper side. When the semi-finished product 48 is set on the semi-finished product holding device 95, the peeling arm 49
The peeling film 39 is peeled off by gripping the peeling film 39 by the chuck 50 and then moving the peeling arm 49.

Next, as shown in FIG. 6, the semi-finished product 48 ′ from which the release film 39 has been peeled off is returned to the lower mold 34. That is,
The semi-finished product 48 ′ is grasped by the hand 52 of the semi-finished product returning device 51, then the hand 52 is raised, moved laterally, and lowered again on the lower mold 34, and the semi-finished product 48 ′ is set on the lower mold 34. To be done.

On the other hand, another disc substrate 80 'is set on the upper mold 35 as shown in FIG. The operation of setting the disk substrate 80 'in the upper mold 35 is the same as the operation shown in FIG. However, this time, the semi-finished product 48 'from which the release film 39 has been peeled off is set on the lower mold 34. Next, the mold opening and closing device 14
The upper mold 35 is lowered by this, the mold is closed, and the upper mold 35 and the lower mold 34 are transferred into the vacuum press device 10 by the turning of the arm 46. After pressure bonding is performed in the vacuum chamber by the vacuum press device 10, the upper mold 35 and the lower mold 34 are returned to the mold opening / closing device 14 side. The operation shown in FIG. 8 is basically the same as the operation described in FIG.

Next, as shown in FIG. 9, a finished optical disc.
90 are taken out. That is, the optical disc 90 on the lower mold 34 is sucked by the suction device 33 and lifted. The carrier device 20 moves to the F position and releases the optical disc 90. As a result, the optical disc 90 is placed on the finished product delivery device 91. Two sets of devices, such as a mold opening / closing device 14, a double-sided adhesive sheet feeding device 16, a mold moving device 18, a conveying device 20, a semi-finished product reversing / peeling film peeling device 22 which are provided on both sides of the vacuum press device 10, , Vacuum press machine 10 double-sided adhesive sheet 85, semi-finished product 48, optical disk
The steps of loading members such as 90 and unloading these members from the vacuum press device 10 are driven at different timings so that they do not overlap with each other. By repeating the steps shown in FIGS. 2 to 9, it is possible to manufacture one optical disk 90 about every 1 minute.

(G) Effect of the Invention As described above, the double-sided adhesive sheet is used to
Since the optical disk manufacturing apparatus configured to bond the disk substrates to each other in a series of steps is configured, it becomes possible to efficiently and automatically manufacture a high quality optical disk in which bubbles and the like do not remain in the bonding portion.

[Brief description of drawings]

FIG. 1 is a diagram showing an entire optical disc manufacturing apparatus according to the present invention, FIG. 2 is a diagram showing a process of supplying a disc substrate to an upper mold, and FIG. 3 is a process of supplying a double-sided adhesive sheet to a lower mold. FIG. 4, FIG. 4 is a diagram showing a pressure bonding process by a vacuum press device, FIG. 5 is a diagram showing a semi-finished product removing process, and FIG. 6 is a process of setting a semi-finished product in a lower mold. FIG. 7 is a diagram showing a process of setting the disc substrate on the upper mold, FIG. 8 is a diagram showing a pressure bonding process by a vacuum press device, and FIG. 9 is a finished product. It is a figure for showing the process of taking out. 10 …… vacuum press machine, 12 …… substrate supply machine, 14 …… die opening / closing device, 16 …… double-sided adhesive sheet supply device, 18 …… die moving device, 20 …… conveying device, 22 …… semi-finished product reversing ・Peeling film peeling device, 34 …… lower mold, 35 …… upper mold, 37,85…
… Double sided adhesive sheet, 39,41 …… Peeling film, 48 ……
Semi-finished products, 80,80 '…… Disk substrate, 90 …… Optical disk, 92 …… Finished product takeout device.

Claims (2)

(57) [Claims] 1. A release film on one side of a double-sided adhesive sheet is peeled off from one side of a disk substrate, and then a release film on the other side of the double-sided adhesive sheet is peeled off. In an optical disk manufacturing apparatus for manufacturing an optical disk by laminating substrates, an upper mold and a lower mold that can press a disk substrate and a double-sided adhesive sheet, a mold opening and closing device that opens and closes the upper mold and the lower mold, and an upper mold A substrate supply device for supplying a disc substrate to the mold, a double-sided adhesive sheet supply device for supplying a lower mold with a double-sided adhesive sheet with the upper release film peeled off, a vacuum press device, a mold opening / closing device, and a vacuum press device. When a die moving device capable of moving the upper die and the lower die between them and a semi-finished product to which one disc substrate and the double-sided adhesive sheet are adhered are taken out from the lower die and turned upside down. An optical disk manufacturing apparatus comprising: a semi-finished product reversing / peeling film peeling apparatus for peeling the remaining peeling film back to the lower mold, and a finished product ejecting device for ejecting a finished product optical disc from the lower mold. 2. The optical disk manufacturing apparatus according to claim 1, wherein a common conveying device is used for the substrate supplying device, the semi-finished product reversing / peeling film peeling device, and the finished product removing device.