JP2506474B2 - 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.

In addition, Japanese Patent Application No. 1-29710, which is an application of the present applicant, discloses a technique for laminating a disc substrate using a double-sided adhesive sheet. In this case, the disc substrate, the double-sided adhesive sheet, etc. However, there is a problem that it takes a long time to handle and the efficiency cannot be improved more than a predetermined level.

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 disc manufacturing apparatus having a transporting device that efficiently handles a double-sided pressure-sensitive adhesive sheet and a disc substrate. That is, in the optical disk manufacturing apparatus according to the present invention, the release films (41) on one side of the double-sided adhesive sheet (85) are peeled off from the signal recording surface side of the disk substrate (80), and then the double-sided adhesive sheet (85) is attached. Peel off the release film (39) on the other side of the
0 ') is intended for an optical disk manufacturing apparatus for manufacturing an optical disk (90) by laminating the signal recording surface side of the disk substrate (80, 80') and a disk substrate supply device (12). , A double-sided adhesive sheet supply device (16) for supplying the double-sided adhesive sheet (85) from which the release films (41) on one side and the disk substrate (80, 8) have been removed.
0 ') and double-sided pressure-sensitive adhesive sheet (85)
5) and the lower die (34) for the bonding jig (11) and the upper die (3
Jig opening / closing device (1) that opens and closes the lower mold (34) with the lower mold (5)
4), disk substrate (80, 80 '), double-sided adhesive sheet (8
5), double-sided adhesive sheet (8
At least two of a semi-finished product (48) obtained by laminating 5) and a finished optical disc product (90) obtained by laminating two disc substrates (80, 80 ') are simultaneously held at the upper holding position and the lower holding position. A transfer device (20) capable of being held and transferred at a holding position and reversing the holding position, a vacuum press device (10), and a bonding jig () between the jig opening / closing device (14) and the vacuum press device (10). 11) A jig moving device (18) capable of moving, a release film holding mechanism (23) capable of holding one end of the release film (39) of the double-sided adhesive sheet (85), and a finished product (90).
It has a finished product storage space (25) for placing the device, and the transfer device (20) is installed in the disk substrate supply device (12), the double-sided adhesive sheet supply device (16), and the jig opening / closing device (14). The adhesive jig (11), the peeling film gripping mechanism (23), and the finished product storage (25) are movable. The reference numerals in parentheses indicate the corresponding members in the embodiments described later.

(E) Action The disk substrate is supplied by the transfer device to the upper die installed in the jig opening / closing device. Further, the lower mold is supplied with a double-sided pressure-sensitive adhesive sheet from which the upper release film is peeled off.
Next, the jig is closed by the jig opening / closing device, and the upper die and the lower die are moved into the vacuum pressing apparatus by the jig moving device. A pressure is applied between the upper die and the lower die in a vacuum state by the vacuum press device to bond the disc substrate and the double-sided adhesive sheet. During this period, the transport device transports the next disk substrate and stands by while holding it at the upper holding position. Next, the upper mold and the lower mold are returned to the jig opening / closing device again to open the mold. The transport device sets the second disc substrate in the upper mold, takes out the semi-finished product in which the disc substrate and the double-sided adhesive sheet have been joined, and moves it to the peeling film gripping mechanism. The semi-finished product is moved by the transporting device while one end of the release film is held by the holding mechanism, whereby the remaining release film is peeled off. The semi-finished product from which the release film has been peeled off is returned to the lower mold with the release film peeled surface facing upward.
Next, the mold is closed, and the upper mold and the lower mold are again moved into the vacuum press device. The vacuum press machine joins the disk substrate and the semi-finished product supplied later. During this time, the transfer device transfers the third disk substrate and the next double-sided adhesive sheet and waits on the jig opening / closing device side. Next, the upper mold and the lower mold are returned to the jig opening / closing device, and after the molds are opened, the third disk substrate is set on the upper mold, and then the optical disk, which is a finished product, is set by the carrying device. Taken out. The carrying device sets the double-sided adhesive sheet in the lower mold after carrying the optical disc to the finished product storage space. After that, the same operation is repeated to continuously manufacture the optical disc. After all, the two disc substrates are joined by the double-sided pressure-sensitive 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 pressure-sensitive adhesive sheet and the disk substrate are joined by the vacuum pressing device, air bubbles do not remain. Further, the transporting device can transport two members at the same time, there is almost no wasteful operation, and the manufacturing of the optical disc can be continued efficiently.

(F) Embodiment FIG. 1 shows the structure of the entire optical disk manufacturing apparatus. This optical disk manufacturing apparatus includes a vacuum press device 10, a substrate supply device 12, a double-sided adhesive sheet supply device 16, a bonding jig 11 including a lower mold 34 and an upper mold 35, a jig opening / closing device 14, and a jig moving device 1.
8. It has a transport device 20, a peeling film gripping mechanism 23, a finished product storage space 25, and the like. The vacuum press device 10 has
Although only the table is provided, other than this, two sets are provided symmetrically on both sides of the vacuum press device 10.

The substrate supply device 12 can sequentially supply the disk substrates 80 one by one from the inside of the case 100 to the upper surface thereof. The disk substrates 80 are stacked one by one via the spacers 102, and the used spacers 102 are accommodated in the case 100 through the holes 105 adjacent to the substrate supply holes 103.

The transfer device 20 includes a suction hand 33, a horizontal movement mechanism 29 capable of moving the suction hand 33 in a horizontal direction by a ball screw mechanism,
It has a vertically moving mechanism 31 that can move vertically and a reversing mechanism 32 that reverses the suction hand 33 by 180 degrees. FIG. 2 shows the suction hand 33 in detail. The suction hand 33 has two parallel plates 130 and 132 and a block 134 provided between them. A vertical through hole is provided in the block 134, and a rod-shaped centering member 136 is provided in the through hole so as to be movable in the axial direction. Tapered members 138 and 140 are fixed to both ends of the centering member 136. The plates 130 and 132 are provided with four suction pads 142 and 144, respectively. The suction pad 142 is arranged at a position relatively far from the centering member 136,
On the other hand, the suction pad 144 is arranged relatively close to the centering member 136.

The double-sided pressure-sensitive adhesive sheet supply device 16 can transfer the double-sided pressure-sensitive adhesive sheet 37 stored in the folded state by a conveyor 38. As shown in FIG. 3, the double-sided pressure-sensitive adhesive sheet 37 includes a tape-shaped release film 39, a circular adhesive 40 provided on the release film 39, and a circular release film 41 provided on the adhesive 40. It consists of and. 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 be fed in synchronization therewith. That is, the adhesive tape 42 unwound from the reel 43 runs while being pressed against the upper surface of the double-sided adhesive sheet 37, and is wound up by the winding reel 44. Thereby, the peeling film 41 can be peeled off. A cutter 45 for cutting the double-sided pressure-sensitive adhesive sheet 37 from which the release film 41 has been removed into a predetermined length is provided. The cut double-sided PSA sheet is indicated by reference numeral 85.

The jig opening / closing device 14 includes a lower mold 34 and an upper mold 35 of the bonding jig 11.
Can be attached, and the upper die 35 can be moved up and down by the jig opening / closing device 14.

The arm 46 constituting the jig moving device 18 is a jig opening / closing device by a fluid pressure cylinder provided in the case 104.
It is possible to move between the position on the 14 side and the position on the vacuum press device 10 side.

The vacuum press device 10 includes a lower mold 34 and an upper mold in the vacuum chamber.
Pressure can be applied to 35.

The release film gripping mechanism 23 has a fixed pawl 110 and a movable pawl 111, and by moving the movable pawl 111 up and down, the release film 39 can be sandwiched between the pawls 110 and 111 as described later. .

The finished product storage space 25 is composed of a belt conveyor 120, which allows the optical disc 90 to be transported to a predetermined place as described later.

Next, the operation of this optical disk manufacturing apparatus will be described.

First, the disk substrate 80 is supplied to the upper mold 35, and the double-sided adhesive sheet 85 is supplied to the lower mold 34. That is, the substrate supply device 12 supplies the disc substrate 80 to the position of the hole 103 of the case 100 with the signal recording surface facing upward. The suction hand 33 descends, and first, as shown in FIG.
8 is fitted in the center hole 80a of the disc substrate 80, and the disc substrate 80 is positioned at the center position as the tapered member 138 descends. Next, the suction hand 33 further descends,
The suction pad 144 comes into close contact with the disk substrate 80. In this way, the disk substrate 80 is sucked by the suction hand 33 and then lifted by the vertical movement mechanism 31. Next, the suction hand 33 is turned over 180 degrees by the operation of the turnover mechanism 32, and the disc substrate 80 is turned up. Next, the double-sided adhesive sheet 85 is sucked by the suction pad 142 on the opposite side of the suction hand 33. That is, the double-sided adhesive sheet 37 is fed in advance by the belt conveyor 38 by a predetermined amount.
At this time, the circular release film 41 on the upper surface side is an adhesive tape.
It is glued to 42 and peeled off. 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 shape, and the cut double-sided adhesive sheet 85 is centrally positioned by the suction hand 33 of the transport device 20 and is sucked and lifted. To be At this point, the upper die 35 of the jig opening / closing device 14 is raised. Next, after the transfer device 20 moves to the position of the jig opening / closing device 14, the disc substrate 80 is set on the upper mold 35, and the double-sided adhesive sheet 85 is set on the lower mold 34. The disk substrate 80 is set with the signal recording surface facing downwards,
Further, the double-sided adhesive sheet 85 is set with the surface from which the release film 41 has been peeled off as the upper surface.

Next, adhesion is performed by the vacuum press device 10. That is, first, the upper mold with the disk substrate 80 set.
35 descends on the lower mold 34 with the double-sided adhesive sheet 85 set. When the upper die 35 is stopped with a slight clearance between it and the lower die 34, that is, when the die closing is completed, the upper die 35 is separated from the mechanism for moving it up and down and moves together with the lower die 34. Ready to go. Then, a fluid pressure cylinder (not shown) is operated, the arm 46 is rotated, and the bonding jig 11 including the upper mold 35 and the lower mold 34 is moved to the vacuum press device 10.
Is transferred to the vacuum chamber. In the vacuum chamber of the vacuum press device 10, a pressing force acts between the upper mold 35 and the lower mold 34 in a vacuum state around them. This allows the disk substrate 80
And the double-sided adhesive sheet 85 are bonded. After the bonding, the vacuum chamber is opened, the arm 46 is rotated in the opposite direction to the case described above, and the upper die 35 and the lower die 34 are returned to the jig opening / closing device 14 side. Next, the upper mold 35 is raised. This allows the lower mold 34
The semi-finished product 48 (see FIG. 4) in which the disk substrate 80 and the double-sided adhesive sheet 85 are adhered is left on the top.

While the vacuum press device 10 is performing the bonding, the suction hand 33 of the transfer device 20 sucks the second disk substrate 80 'to be supplied next, reverses it by 180 degrees and holds the disk substrate 80' on the upper side. It is waiting in the state.

The suction hand 33, which has been on standby, sets the second disk substrate 80 ′ on the upper mold 35 and reverses it by 180 degrees to suck the semi-finished product 48. After the semi-finished product 48 is sucked by the suction hand 33 of the transport device 20, the suction hand 33 moves up, then the transport device 20 moves in the horizontal direction, and the peeling film gripping mechanism 23.
Stop at the top position. The release film gripping mechanism 23 is a release film for a double-sided adhesive sheet bonded to the semi-finished product 48.
Hold the end of 39. Then, as shown in FIG. 6, the semi-finished product 48 is raised while being adsorbed and horizontally moved. As a result, the release film 39 adhered to the semi-finished product 48
It will be peeled off. Then, the suction hand 33 is inverted again by 180 degrees, and the semi-finished product 48 with the peeling film 39 peeled off is set on the lower mold 34. As a result, the adhesive surface of the semi-finished product 48 of the lower mold 34 and the signal recording surface of the second disk substrate 80 'are brought into contact with each other.

Next, the mold is closed again, and the bonding jig 11 is transferred into the vacuum press device 10. The vacuum press device 10 bonds the second disk substrate 80 ′ and the semi-finished product 48.
Thus, the optical disk 90 shown in FIG. 5 is completed.

While the vacuum press device 10 is performing the bonding, the suction hand 33 sucks the third disk substrate 80, and then 18
It is inverted by 0 °, the second double-sided pressure-sensitive adhesive sheet 85 is adsorbed, and it stands by in this state.

When the bonding by the vacuum pressing device 10 is completed, the jig moving device 18 returns the bonding jig 11 to the jig opening / closing device 14 again, and the jig opening / closing device 14 opens the mold. The suction hand 33, which has been on standby, sets the third disk substrate 80 on the upper mold 35, then reverses it by 180 degrees to suck the optical disk 90 which is a finished product, and moves it to the finished product storage space 25. Next, turn it over 180 degrees again, and put the second double-sided adhesive sheet 85 on the lower mold with the adhesive side up.
Set to 34. After that, the optical disc 90 can be sequentially manufactured by repeating the above steps. The optical disc 90 is conveyed to a predetermined position by the conveyor 120.

In addition, two sets of substrate supply device 12, double-sided adhesive sheet supply device 16, and bonding jig 1 arranged on both sides of the vacuum press device 10.
1, the jig opening / closing device 14, the jig moving device 18, the transport device 20, the peeling film gripping mechanism 23, and the like operate in a state in which the phases thereof are shifted by half. Therefore, in the vacuum press device 10,
First, the double-sided adhesive sheet 85 and the disk substrate 80 are bonded by the right bonding jig 11, then the double-sided adhesive sheet 85 and the disk substrate 80 are bonded by the left bonding jig 11, and then the right side. The semi-finished product 48 and the disc substrate 80 'are adhered by the adhering jig 11 and the semi-finished product 48 and the disc substrate 80' are further adhered by the adhering jig 11 on the left side. The same steps are repeated thereafter. In this way, the left and right devices operate alternately, the vacuum press device 10 operates with almost no waiting time, and the optical disc 90 can be manufactured continuously.

(G) Effect of the Invention As described above, using the double-sided adhesive sheet
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. In addition, since the transport device can transport two members at the same time and turn them upside down, it is possible to efficiently perform the supply of the disc substrate and the double-sided adhesive sheet, the peeling work of the release film, and the transport of the optical disc.

[Brief description of drawings]

FIG. 1 is a diagram showing the entire optical disc manufacturing apparatus according to the present invention, FIG. 2 is a diagram showing a suction hand in detail, FIG. 3 is a diagram showing a double-sided adhesive sheet, FIG. 4 is a diagram showing a semi-finished product, and FIG. The figure shows the optical disk, and FIG. 6 shows the step of peeling the release film. 10 …… Vacuum press machine, 11 …… Adhesive jig, 12 …… Substrate supply device, 14 …… Jig opening / closing device, 16 …… Double-sided adhesive sheet supply device, 18 …… Jig moving device, 20 …… Transfer Device, 33 ……
Adsorption hand, 34 …… Lower mold, 35 …… Upper mold, 37,85 …… Double-sided adhesive sheet, 39,41 …… Peeling film, 48 …… Semi-finished product, 80,80 ′ …… Disk substrate, 90 …… optical disk.

Claims (4)

(57) [Claims] 1. A release film (41) on one side of a double-sided pressure-sensitive adhesive sheet (85) on the signal recording surface side of a disk substrate (80).
Then, the double-sided pressure-sensitive adhesive sheet (85) is peeled off, and then the release film (39) on the other side of the double-sided pressure-sensitive adhesive sheet (85) is peeled off. In the optical disk manufacturing apparatus for manufacturing a), a disk substrate supply device (12) for supplying a disk substrate (80, 80 ') and a double-sided pressure-sensitive adhesive sheet (85) from which the release film (41) on one surface side is peeled off. Double-sided adhesive sheet supply device (16) for supplying, upper mold (35) and lower mold (3) capable of pressurizing the disk substrate (80, 80 ') and the double-sided adhesive sheet (85).
Adhesive jig (11) consisting of 4), upper mold (35) and lower mold (3
4) A jig opening / closing device (14) for opening and closing, a disc substrate (80, 80 '), a double-sided adhesive sheet (85), and a double-sided adhesive sheet (85) on the disc substrate (80, 80'). Combined semi-finished product (48) and two disc substrates (80, 80 ')
A transport device (2) capable of transporting and holding at least two of the finished optical disc products (90) that have been bonded together at the upper holding position and the lower holding position at the same time and reversing the holding position.
0), a vacuum press device (10), and a jig opening / closing device (14)
The jig moving device (18) that can move the bonding jig (11) between the vacuum pressing device (10) and the peeling film (39) of the double-sided adhesive sheet (85) that can hold one end of the peeling film (39). It has a film gripping mechanism (23) and a finished product storage (25) for placing the finished product (90). The transport device (20) is a disk substrate supply device (12), a double-sided adhesive sheet supply device ( 1
6), the adhesive jig (1) installed on the jig opening / closing device (14)
1. An optical disk manufacturing apparatus, which is movable between a peeling film gripping mechanism (23) and a finished product storage space (25). 2. A vacuum press device (10), a disk substrate supply device (12), a double-sided adhesive sheet supply device (16),
Bonding jig (11), jig opening / closing device (14), transfer device (2
0), jig moving device (18), release film gripping mechanism (2
3. The optical disc manufacturing apparatus according to claim 1, wherein 3) and two sets of finished product storage areas (25) are provided. 3. A transfer device (20) includes a suction hand (33) having suction pads (142 and 144) on the top and bottom, a reversing mechanism (32) capable of vertically reversing the suction hand (33), and a suction device. The horizontal movement mechanism (29) capable of horizontally moving the hand (33), and the vertical movement mechanism (31) capable of vertically moving the suction hand (33). 2. The optical disk manufacturing apparatus described in 2. 4. The suction hand (33) has a centering member (136) which is movable in the axial direction by its own weight according to the reversal of the suction hand (33), and the centering member (136) is tapered at both ends. Has members (138 and 140), where the tapered members (138 and 140) are the disk substrates (80 and 80 '), respectively.
The optical disk manufacturing apparatus according to claim 3, wherein the double-sided pressure-sensitive adhesive sheet (85) can be fitted in a central hole of the double-sided adhesive sheet (85).