JP2003217184A - Disk sticking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk sticking device by which shape distortion of stuck disks is not caused even when the stuck disks are irradiated with UV by using a UV irradiation device. <P>SOLUTION: Places where stuck disks formed by sticking first and second disks to each other by using an adhesive are to be placed and places where weight members are to be placed are alternately set on the circumference of nearly the same circle of a turntable and the weight members are usually placed on the turntable. When the stuck disks are irradiated with UV to cure the adhesive, the weight member is placed on the stuck disks. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc laminating apparatus for laminating a first disc and a second disc to manufacture one disc.

[0002]

2. Description of the Related Art As a method of bonding a lower disk and an upper disk to make one disk, conventionally, first, the lower disk is placed on a rotating device and the rotating device is rotated at a low speed. , After supplying the adhesive on this lower disk, stop the rotating device again, stack the upper disk on this lower disk, and in this state, rotate the rotating device at high speed for a predetermined time to bond between the upper and lower disks. Spread the agent enough. After that, the rotation is stopped again, and the upper and lower disks that are in close contact with each other via the adhesive are sent to the ultraviolet irradiation device and irradiated with ultraviolet rays to cure the adhesive, thus completing the bonded disk.

As described above, by rotating the rotating device at a high speed, it is possible to form an adhesive layer having a uniform thickness and obtain a bonded disk having good flatness.

[0004]

In the above conventional apparatus, when a lower disk and an upper disk are bonded together to manufacture one disk, the lower disk and the upper disk are bonded together on the turntable. The adhesive disk is placed, and an ultraviolet irradiation device is preliminarily installed on a part of the turntable. The adhesive disk on the turntable is irradiated with ultraviolet rays by the ultraviolet irradiation device, and the liquid adhesive is cured.

In this case, there is a problem that the surface of the adhesive disk is deformed due to the temperature rise of the adhesive disk due to the irradiation of ultraviolet rays and the contraction when the adhesive is hardened, causing waviness, that is, a geometrical distortion of the disk. is there.

It is an object of the present invention to provide a disk laminating apparatus which does not cause geometrical distortion of the adhesive disk even when the adhesive disk is irradiated with ultraviolet rays by the ultraviolet irradiation apparatus.

[0007]

According to the present invention, there is provided a turntable which is a place for placing an adhesive disc in which a first disc and a second disc are adhered with an adhesive and a place for placing a weight member. Are set alternately on the same circumference, and the weight member is always on the turntable. When the adhesive disk is irradiated with ultraviolet rays to cure the adhesive, the weight member is set to the adhesive disk. It is intended to be placed on top.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view showing a disk bonding apparatus 10 which is an embodiment of the present invention.

The disc bonding device 10 is basically a device in which the discs flow from the first stacker ST1 and the second stacker ST2 toward the rotary table T3.

That is, the lower disk DS1 placed on the first stacker ST1 is sent to the discharge table T1 and the liquid adhesive is applied thereto, while the second stacker S1.
After the upper disc DS2 placed on T2 is sent to the switching table T2, the lower disc D is placed on the lower disc DS1 placed on the discharge table T1.
It is held facing S1 and transferred to the coater house CH1 or CH2, and the adhesive is applied to the disks DS1 and DS.
The adhesive disc DS3 is spread over between the two. In other words, the adhesive disk DS3 is formed by sandwiching the liquid adhesive between the lower disk DS1 and the upper disk DS2 to form a single disk. The adhesive disk DS3 is carried to the end surface processing house EH, and when the end surface processing of the adhesive disk DS3 is completed, it is transferred to the rotary table T3.

Eight quartz pedestals (a pedestal made of quartz, which is omitted in FIG. 1) are fixed to the rotating portion of the rotary table T3 at equal intervals, and one of these eight quartz pedestals is fixed. The adhesive disk DS3 is placed, and the quartz plate QU is placed on the adhesive disk DS3, that is, the adhesive disk DS3 is sandwiched between the quartz table and the quartz plate QU, and the ultraviolet irradiation device is provided. Passed UV1 and adhered disk D
The quartz plate QU placed on S3 is removed, and the adhesive disk DS3 is stacked on the ejection stacker ST3.

Next, the above embodiment will be described more specifically.

First, a large number of lower disks DS1 are stacked on the first stacker ST1, and the disk DS1 of the first stacker ST1 located at the position P1 is the first one.
Disc lifter DL1 of the highest disc D
S1 is raised so as to be located at the set level, and in this state, the uppermost disc DS1 existing at the position P1 is moved to the position P by the disc supply arm DSA1.
Placed on 2. Disc DS1 placed at position P2
The disk reversing unit DI reverses the positions of the upper surface and the lower surface of the disk and mounts it on the position P3 of the ejection table T1. It should be noted that the recording surface of the disc DS1 is housed in the stacker ST1 with the recording surface facing downward in order to reduce the adhesion of dust, and is reversed so that the recording surface of the disk DS1 faces upward during bonding. Depending on the configuration of the disc manufacturing process, it may be convenient to store the disc with the recording surface facing upward. In this case, the disc reversing unit DI is installed between positions P11 and P12 described later.

The disc DS1 placed on the position P3 of the discharge table T1 is rotated 120 degrees counterclockwise by the discharge table T1 and reaches the position P4. This position P4
In, the liquid adhesive is annularly ejected from the adhesive ejection nozzle N near the center of the disc DS1.

That is, in the nozzle N, the member that supports the nozzle N slides independently in the X-axis direction and the Y-axis direction, and the discharge tip of the nozzle N makes a circular motion by this independent slide. In the process of this circular movement, the liquid adhesive is ejected from the nozzle N and applied in an annular shape on the disk DS1. In this case, the nozzle N starts the circular motion before the lower disk DS1 reaches the position P4. Thus, by starting the circular motion of the nozzle N before the disc DS1 reaches the position P4, it is possible to eliminate the waiting time until the nozzle N circularly moves at a constant speed.

After the liquid adhesive is annularly applied on the disc DS1, the disc DS1 is rotated counterclockwise by 12
It rotates 0 degrees and stands by at position P5.

On the other hand, a large number of upper disks DS2 are stacked on the second stacker ST2, of which the position P11
Disc DS2 present in the second disc lifter DL
As in the case of the first stacker ST1, it is lifted to the uppermost position of the stacker ST2 by the second stacker ST1, and in this state, it is placed at the position P12 of the switching table T2 by the second disk supply arm DSA2. Position P1
The disc DS2 mounted on the second disc has a switching table T
When 2 rotates 180 degrees and reaches the position P13, the position P
The disk DS2 on 13 is held by the transfer robot R1 and moves above the position P5. At this time, the disc DS1 placed at the position P5 is the disc DS1.
It is held by the transfer robot R1 under a predetermined distance below 2. In addition, the predetermined interval referred to here is
Whether the adhesive on the disc DS1 comes into contact with the disc DS2 or the adhesive on the disc DS1 does not come into contact with the disc DS2, and which one is selected depends on the condition described later. It is selected accordingly.

Thereafter, the disks DS1 and DS2 are placed by the transfer robot R1 at the position P14 of the pedestal of the rotating device of the coater house CH1. Immediately before the disks DS1 and DS2 are placed at the position P14 of the pedestal of the rotating device, the rotating device has completely stopped.
Then, at the position P14 of the pedestal of the rotating device, the disc D
As soon as S1 and DS2 are placed in a state of facing each other, the rotating device starts rotating. Therefore, in the above-described embodiment, the time during which the rotating device stops rotating is extremely short, which improves the efficiency of the rotating device and improves the overall efficiency of the disk bonding device 10.

By the rotation of the rotating device, the disc DS1
And a means for collecting the excess liquid adhesive scattered from the DS2 are provided in the coater house CH1. Disk DS1 by rotation in coater house CH1
After a predetermined time required for the liquid adhesive to be sufficiently distributed between the DS2 and the DS2, the rotating device stops. At this time, the disks DS1 and DS2 are one adhesive disk DS3. After that, the transfer robot R2
The disk DS3 at the position P14 is transferred to the position P15 of the end surface processing house EH.

In this end surface treatment house EH, the liquid adhesive adhering to the end surface of the adhesive disk DS3 is wiped or scraped off to remove the liquid adhesive from the end surface of the adhesive disk DS3. After that, the transfer arm A1 places the adhesive disk DS3 existing at the position P15 at the position P21 on the rotary table T3.

While the excess liquid adhesive is being removed from the disc DS3 by the coater house CH1, the transfer robot R1 moves the new upper disc DS2 placed at the position P13 of the switching table T2.
On the new lower disk DS1 placed at the position P3 of the discharge table T1 so as to face each other,
The transfer robot R1 rotates counterclockwise (reverse rotation) between the disks DS1 and DS2 that are arranged to face each other.
As a result, it is placed at the position P16 of the pedestal of the rotating device of the coater house CH2. Immediately before the disks DS1 and DS2 are placed on the position P16 of the pedestal of the rotating device, the rotating device completes stopping, and the disks DS1 and DS2 are placed on the position P16 of the pedestal of the rotating device. Immediately after being placed, the rotating device starts to rotate. Even in this case, the time during which the rotating device in the coater house CH2 stops rotating is extremely short, which improves the efficiency of the rotating device and improves the overall efficiency of the disk bonding device 10.

Although the processing time of the coater house is relatively longer than that of the other parts, the provision of two coater houses as described above prevents the coater house from becoming a bottleneck for a smooth flow. . Then, when the rotation in the coater house CH2 is stopped, the transfer robot R2 sends the adhesive disk DS3 existing at the position P16 to the end surface processing house EH.

Eight quartz stages (not shown) are installed on the turntable T3 at intervals of 45 degrees, and an adhesive disk DS3 carried from the end surface processing house EH is placed on each of these eight quartz stages. In addition, in the turntable T3, the adhesive disk DS3 is shown in a circle, and the quartz plate QU that should be placed on the adhesive disk DS3 or is placed on the adhesive disk DS3 is shown as a square. is there. Actually, the shape of the quartz plate QU which should be placed on the adhesive disk DS3 or is placed on the adhesive disk DS3 is set to be slightly larger than the adhesive disk DS3 and is set to a disk shape. I am doing it. Quartz plate QU
With this shape, the bonding disk DS3 can be irradiated with uniform ultraviolet rays through the quartz plate QU, and the area of the quartz plate QU can be minimized. However, in order to make the drawing easy to see, in FIG. 1, the quartz plate QU is shown as a quadrangle for convenience.

The rotary table T3 is, for example,
It repeats a cycle of rotating 45 degrees for 4 seconds and stopping the rotation for 1 second. The adhesive disk DS3 present at the position P15 when the rotation table T3 stops rotating.
Is transferred to the position P21 of the table T3 by the transfer arm A1. Further, the other transfer arms A2, A3, and A4 execute the respective transfer during the above-mentioned 1 second of stop. It should be noted that the time required for the rotary table T3 to rotate 45 degrees and the time to stop each rotation of 45 degrees may be appropriately determined as necessary. Further, it may be rotated at every angle other than 45 degrees.

The adhesive disk D existing at the position P21
S3 is at position P when the rotary table T3 rotates 45 degrees.
23, and the transfer arm A2 places the quartz plate QU existing at the position P22 on the adhesive disk DS3 existing at the position P23. By doing so, the adhesive disk DS3 existing at the position P23 is sandwiched between the quartz table and the quartz plate QU (not shown). When the rotary table T3 is rotated by 45 degrees again in such a sandwiched state, it enters the ultraviolet irradiation device UV1 and the two UV lamps L
1, the adhesive disk DS3 is irradiated with ultraviolet light from above and below at position P24, and the two UV lamps L2 irradiate the adhesive disk DS3 from above and below at position P25 with ultraviolet light.

The UV irradiator UV1 is a UV lamp L.
1 and L2 are built in, the UV lamp L1 is composed of two ultraviolet radiation lamps, and these two ultraviolet radiation lamps are
The bonding disk DS3, the quartz table, and the quartz plate QU are opposed to each other with a path passing therebetween. The UV lamp L2 is
It consists of two UV radiation lamps. These two UV radiation lamps consist of an adhesive disk DS3, a quartz table and a quartz plate Q.
They are opposed to each other with a path through which U passes. If there is no problem with the irradiation power, the UV irradiation device UV1
It is also possible to incorporate only the V lamp L1.

A quartz table, an adhesive disk DS3 and a quartz plate Q are provided between the two ultraviolet radiation lamps constituting the UV lamp L.
Since the quartz table, the quartz plate QUA, the lower disk DS1 and the upper disk DS2 are transparent in the process of passing U, ultraviolet rays penetrate these and reach the liquid adhesive, Cure. Further, since the quartz plate QU has a predetermined weight, the deformation due to the temperature rise of the lower disk DS1 and the upper disk DS2 or the deformation due to the curing shrinkage of the adhesive is prevented by the irradiation of ultraviolet rays. .

Then, the adhesive disk DS3 and the quartz plate QU
When and reach the position P26 of the rotary table T3 and the rotary table T3 stops, during this stop period, the transfer arm A
3 transfers the quartz plate QU to the position P27. After that, when the adhesive disc DS3 reaches the position P28, the transfer arm A4 ejects the adhesive disc DS3 from the stacker ST3 for ejection.
Reprinted to.

After that, the cooling section CL which constitutes the chamber
Through the quartz table and the quartz plate QU, and in the cooling section CL, the quartz table and the quartz plate QU are cooled, and dust adhering to the surface thereof is blown off and removed.
That is, a blower duct (not shown) that blows cool air into the cooling section CL and an exhaust duct d that exhausts the blown air are provided. The blower port of the blower duct is installed near the surface of the quartz table and the quartz plate QU, the exhaust duct d is separated from the blower port of the blower duct, and the cooling unit C is provided.
It is installed near the inner wall of the chamber forming L.

In the above embodiment, the lower disk DS1 and the upper disk DS2 are transferred to the coater houses CH1 and CH2 in a state of being opposed to each other, but the interval can be selected as required. That is, the lower disc DS
Regarding the predetermined gap between the disc 1 and the upper disc DS2, the adhesive on the disc DS1 can be brought into contact with the disc DS2, and the disc DS2 is not brought into contact with the adhesive on the disc DS1. You can also

When the adhesive has a high viscosity, it takes time for the adhesive on the lower disk DS1 to come into contact with the upper disk DS2 and to spread to the position to be applied on the inner peripheral side of the disk. Therefore, if the disk DS2 is brought into contact with the adhesive here, the time for the rotation process can be shortened. That is, the shape of the adhesive layer is disturbed at the moment when the disks DS1 and DS2 are overlapped, and if the disks are rotated at a high speed in this state, it becomes easier for air bubbles to be entrapped, so it is necessary to expand the adhesive layer to some extent. , Therefore, because the adhesive must be supplied to the outside of the position to be applied, the disks DS1 and DS2
The reason is that high-speed rotation cannot be performed until after the adhesive has spread to the position to be coated on the inner peripheral side of the disc, after overlapping the above.

On the other hand, when the adhesive has a low viscosity, the adhesive supplied on the lower disk DS1 is made to face the upper disk DS2 so as not to come into contact therewith, and this facing state is maintained. However, it is only necessary to transfer it to the rotating device, and after the disks DS1 and DS2 are stacked on the rotating device, high speed is possible within about 1 second, so the waiting time before the high speed rotation as described above does not matter. .

The quartz plate QU is an example of a weight member. However, if the quartz plate QU sufficiently transmits ultraviolet rays and has a predetermined weight, a member other than the quartz plate constitutes the weight member. Good. Further, regarding the material of the quartz table on which the adhesive disk DS3 is placed, similarly, the quartz table may be made of a member other than the quartz plate.

The adhesive discharge nozzle N and its driving means are examples of an adhesive supply device for supplying a liquid adhesive to the disc, and the coater houses CH1 and CH2 use the liquid adhesive on the disc by centrifugal force. It is an example of a rotating device for expanding. The transfer robot R1 is the first one to which the adhesive is supplied.
Is an example of a transfer device that transfers the disk to the rotating device while facing the second disk and the second disk.
V1 is an example of a curing unit that cures the adhesive spread between the first disk and the second disk by the rotating device.

The transfer arm A2 is an example of a second transfer means for mounting a weight member, which is alternately placed on the turntable and the adhesive disc, on the adhesive disc on the turntable. The UV irradiator UV1 is an example of an UV irradiator that irradiates the adhesive disk placed under the weight member with ultraviolet light to cure the adhesive.
The transfer arm A3 is an example of a third transfer unit that transfers the weight member to the original position of the turntable from above the adhesive disk after the ultraviolet irradiation, and the transfer arm A4 is the bonded disk. It is an example of a fourth transfer means for ejecting from the turntable.

Further, the above-mentioned embodiment is a ROM type DVD,
It can be applied to both a write-once DVD and a write-once DVD.

[0037]

According to the present invention, the adhesive disc is irradiated with ultraviolet rays to cure the adhesive while the weight member is placed on the adhesive disc on the turntable. Even if it is irradiated, there is an effect that the adhesive disk is not distorted.

[Brief description of drawings]

FIG. 1 is a plan view showing a disk bonding device 10 according to an embodiment of the present invention.

[Explanation of symbols]

10 ... Disk laminating device, DS1 ... the lower disc, DS2 ... upper disc, DS3 ... Adhesive disc, T1 ... Discharge table, T2 ... switching table, T3 ... turntable, DSA1, DSA2 ... Disk supply arm, N ... Adhesive discharge nozzle, DI ... disk inversion unit, R1, R2 ... Transfer robot, CH1, CH2 ... coater house, EH ... Edge processing device, A1, A2, A3, A4 ... Transfer arm, QU ... quartz plate, UV1 ... Ultraviolet irradiation device, CL ... Cooling unit.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masahiko Kotoyori             Oriji, 1-1-18 Takada, Toshima-ku, Tokyo             N Denki Co., Ltd. (72) Inventor Hironobu Nishimura             Oriji, 1-1-18 Takada, Toshima-ku, Tokyo             N Denki Co., Ltd. F-term (reference) 5D121 AA07 FF01 FF11 FF18 GG02

Claims (5)

[Claims] 1. An apparatus for manufacturing a single disc by laminating a first disc and a second disc together, wherein the first disc and the second disc are bonded by a liquid adhesive. A first transfer device for transferring the adhesive disk to the turntable; a second transfer means for mounting a weight member on the adhesive disk on the turntable; An ultraviolet irradiating device that irradiates the adhesive disk placed thereon with ultraviolet rays to cure the adhesive, and a disk bonding apparatus. 2. The third transfer means for transferring the weight member to the original position on the turntable from above the adhesive disk after the ultraviolet irradiation, according to claim 1, And a fourth transfer means for ejecting the disc from the turntable. 3. The disk bonding apparatus according to claim 2, wherein the weight member is made of quartz. 4. The disc bonding apparatus according to claim 2, wherein the adhesive discs and the weight members are alternately arranged on substantially the same circumference of the turntable. 5. The weighting member according to claim 2, wherein the weighting member is provided in a path in which the weighting member is conveyed from a carry-out position of the ultraviolet irradiation device to a position where the adhesive disk is transferred to the turntable. A disk laminating device, characterized in that a cooling device for cooling the disk is provided.