JP2509363Y2 - Optical information recording disk protective film coating device - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention aims to prevent deterioration or scratching of a reflecting surface formed on a pit surface of an optical information recording disk such as a compact disc. The present invention relates to a protective film coating device for an optical information recording disk for forming a protective film on a pit surface.

[Conventional technology]

FIG. 11 shows a conventional protective film coating apparatus for this type of optical information recording disk.

In this apparatus, the optical information recording disc 1 on which a protective film is not yet formed is placed at the optical information recording disc supply position.

Next, the optical information recording disk transfer arm 3 having a suction pad at the tip descends to adsorb the optical information recording disk 1 and moves up after moving to electrostatically move the coated optical information recording disk 1. It is placed at the dust removal processing position 4 by blow and returned to the original position.

The dust removal processing is performed here on the optical information recording disk 1 at the dust removal processing position by electrostatic blow.

Next, when the optical information recording disk transfer arm 3 performs the same one cycle operation, the optical information recording disk 1 at the electrostatic blow dust removal processing position 4 is mounted at the spinner position 6 of the coating mechanism 5. .

The optical information recording disk 1 at the spinner position 6 rotates at a low speed here, and the ultraviolet curable coating material is dripped and supplied from the coating material discharge nozzle 7 to the optical information recording disk 1 rotating at a low speed.

When the supply of the paint is completed, the optical information recording disc 1 rotates at high speed, and the paint on the optical information recording disc 1 is uniformly dispersed on the surface of the optical information recording disc 1 by the centrifugal force.

Next, when the optical information recording disk transfer arm 3 performs a similar one-cycle operation, the optical information recording disk 1 after applying the paint is placed on the tray of the conveyor 8 under the ultraviolet irradiation device, and The formula information recording disk 1 moves while being placed on this tray, and when it reaches the ultraviolet irradiation position 9, it is irradiated with ultraviolet rays and the coating material applied to the surface of the optical information recording disk 1 is cured.

After that, the tray on the conveyor 8 moves to reach the optical information recording disk 1 and the optical information recording disk discharge position 10, and is discharged after completing a series of steps.

[Problems to be solved by the invention]

In such a protective film coating device for an optical information recording disc, a low-speed rotation position where the paint is dropped and supplied onto the optical information recording disc 1 and the dropped paint is evenly distributed over the entire surface of the optical information recording disc 1. Since the high-speed rotation position to disperse into two is the same position, it takes 1 time to combine these two operations.
This results in the minimum necessary working time for one optical information recording disk 1.

Therefore, in order to increase the number of optical information recording discs that can be processed within a certain period of time, two optical information recording discs can be processed at the same time. Therefore, the size of the device becomes large.

[Purpose of device]

The present invention solves the above-mentioned drawbacks of the conventional protective film coating device for an optical information recording disk, has a small device size, and dramatically increases the processing capacity per optical information recording disk, and further improves each turn. The intermittent rotation unit of the table and the lifting / lowering of the transfer arm, the loading arm, and the unloading arm and the lifting / lowering swing unit of the swing arm are unified, and the rotation is transmitted from the same rotary shaft to the rotary shaft. One rotation of the device can be set as one tact time of the device, and it is an object of the present invention to control the operation of the device by the rotation angle of this rotation shaft so that the timing of the operation does not change.

[Means for solving the problem]

The present invention relates to a protective film coating apparatus for an optical information recording disk to achieve the above-mentioned object, including three turntables on which optical information recording disks such as compact disks can be mounted at a plurality of positions at equal intervals. 1 turntable to 2nd turntable, 2nd turntable to 3rd
A transfer arm for adsorbing and transferring the optical information recording disks to the turntable, a loading arm for transferring the stacked optical information recording disks from the loading position to the first turntable, and And a carry-out arm for transferring the optical information recording disk from the turntable 3 to the carry-out position, and a raising and rotating means for sucking and lifting the optical information recording disk at a predetermined position of each turntable and rotating the disk. , By the ascending rotation means of the first turntable,
Dropping means for dropping the protective film agent on the rotating optical information recording disk, and a protective film for dispersing the protective film agent on the optical information recording disk which is raised and rotated at high speed by the rising and rotating means of the second turntable. The agent shake-off means, the protective film curing means for irradiating the protective film agent of the optical information recording disk, which is raised and rotated by the rotation raising means of the third turntable, with ultraviolet rays to cure the protective film, and the intermittent turn of the three turntables. Rotation, transfer arm, carry-in arm, carry-out arm elevating and lowering,
The object is achieved by a protective film coating device for an optical information recording disk, which is provided with a transmission means for transmitting the swing from the same rotation shaft and a device control signal output means according to the rotation angle of the rotation shaft. .

[Example of device]

Next, one embodiment of the present invention will be described with reference to FIGS. 1 to 10 for a protective film coating apparatus for a compact disc.

11.12.13 are mounting positions 11a.12a.13 where the compact discs A are mounted at four positions on the same circumference at equal intervals.
It is a turntable provided with a and is rotatably supported on a pedestal B.

These turntables 11.12.13 are fixed to the output shaft B1a of the intermittent rotation unit B1 shown in FIG.

In this intermittent rotation unit B1, when the rotation angle of the input shaft B1b reaches a certain position, the output shaft B1a rotates by 90 degrees, and after the rotation is finished, the input shaft B1b again reaches this angle position. It has stopped until it arrives.

A timing belt D1 is installed between the intermittent rotation unit B1 and the main shaft C, and the input shaft B1b of the intermittent rotation unit B1 rotates in synchronization with the main shaft C.

Reference numeral 14 is a roller conveyor, and a carrier 15 in which a pillar 15b is erected on a base 15a has a collar 15c mounted on the pillar 15b, and a central hole A of the compact disc A is mounted on the pillar 15b.
1 is inserted, and the compact disc A is placed on the collar 15c, and is conveyed from one side to the other side.

On the roller conveyor 14, stoppers 16 and 17 for stopping the transporting tool 15 moving on the roller conveyor 14 are provided on the loading side and the unloading side, and the stoppers 16 and 17 project onto the roller conveyor 14. It is composed of two stopper pieces 16a.16b and 17a.17b that can be inserted or retracted.

When the carrying tool 15 is placed on the carry-in side of the roller conveyor 14 and carried by the roller conveyor 14, the stopper piece 16a of the carry-in side stopper 16 is retracted.

Therefore, the carrier 15 placed on the roller conveyor 14
The base 15a passes through the stopper piece 16a in which the stopper 16 is retracted, but hits the protruding stopper piece 16b and is prevented from moving.

In this way, when the transport tool 15 is stopped by the stopper piece 16b, the stopper piece 16a also projects, positions the transport tool 15, and prevents the next transport tool 15 from being carried in.

At this position, a collar that supports the lower surface of the compact disc A having the center hole A1 inserted in the column 15b of the carrier 15.
A push-up arm 18 is provided to enter the lower side of 15c, and when the carrier 15 comes to this position, the push-up arm 18 enters below the collar 15c by a slide mechanism (not shown) and starts to rise, so the compact disc A , Its center hole A1 starts to rise along the column 15b.

Then, when the uppermost surface of the stacked compact disks A reaches a certain height, the height sensor 19 detects this and stops the lifting of the push-up arm 18.

The height sensor 19 detects the removal of the uppermost compact disc A by the carry-in arm 20 and operates the push-up arm 18 to move the height of the uppermost compact disc A as described later. Is always constant.

The gantry B is provided with a carry-in arm 20 that stands by immediately above the positioned carrier tool 15 and is rotatable by 90 degrees.

The carry-in arm 20, the transfer arm 22.23, and the carry-out arm 24, which will be described later, correspond to the output shaft B2 of the lifting / lowering unit B2 shown in FIG.
The output shaft B2a is fixed to a transfer arm 22,
For example, when the input shaft B2b is rotated by 360 degrees, the vertical movement as shown by a in FIG. 10 and the rotary movement as shown by b are performed.

A timing belt D2 is installed between the input shaft B2b of the lifting / lowering swing unit B2 and the main shaft C, and the lifting / lowering swing unit B2, the main shaft C, and the intermittent rotation unit B1 are synchronized with each other. Rotate.

The turntables 11, 12, and 13 attached to the output shaft B1a of the intermittent rotation unit B1 rotate while the carry-in arm 20, the transfer arms 22 and 23, and the carry-out arm 24 rotate upward.

The carry-in arm 20 is provided with a plurality of suction cups 20a that adsorb the hub portion A2 around the center hole A1 of the compact disc A at equal intervals.

The carry-in arm 20 is inserted into the support column 15b of the carrier 15 positioned by the stopper pieces 16a and 16b, and is positioned right above the hub portion A2 of the ascending compact disc A.

At the position indicated by the dashed line in FIG. 2 in which the carry-in arm 20 is rotated 90 degrees to the opposite side, the suction cup 20a is located directly above one mounting position 11a of the first turntable 11.

That is, the carry-in arm 20 is moved up and down by the elevating and oscillating unit B2 so that the compact disc A on which the carrier 15 is raised.
To the upper surface of the above, and after assembling the vacuum chuck, it ascends and rotates 90 degrees to the above-mentioned mounting position 11a.

Next, it descends again, the vacuum is released, the transfer of the compact disc A is completed, and it rises again and returns to the position directly above the carrier 15, completing one cycle.

On the gantry B, a position of the first turntable 11 which is rotated by 270 degrees from the mounting position 11a below the carry-in arm 20, and a mounting position 12a of the second turntable 12 which faces the rotating position. A transfer arm 22 is provided which rotates between and.

Similarly, on the pedestal B, between the position of the second turntable 12 which is rotated by 180 degrees from the mounting position 12a and the mounting position 13a of the third turntable 13 which opposes the rotating position. A transfer arm 23 for rotating is provided.

2 from the above-mentioned installation position 13a of the third turntable 13
A carry-out arm 24 that rotates between a position rotated by 70 degrees and a position directly above the compact disc A of the carrier 15 stopped by the stopper piece 17b of the stopper 17 on the roller conveyor 14.
Is also provided on the mount B.

Like the carry-in arm 20, the transfer arm 22.23 and the carry-out arm 24 are provided with a suction cup 20a for sucking the hub portion A2 of the compact disc A. .

A motor 25 is mounted on the base B directly below the first turntable 11.
A rotary shaft 26 rotated by is lifted by a lifting device 27.

The upper end of the rotary shaft 26 serves as a suction table 28 having a suction hole 28a formed in the upper surface.

The compact disc A is placed on the placement position 11a of the first turntable 11, and the placement position by the carry-in arm 20 is set.
When the rotary encoder 33 directly connected to the main shaft C detects that the compact disc A has come to a position rotated by 180 degrees from 11a, the lifting device 27 raises the suction table 28.

Then, the compact disc A is placed on the adsorption table 28.
And the suction hole 28a is connected to a vacuum source,
The compact disc A is sucked onto the upper surface of the suction table 28.

And, still by the lifting device 27, the suction table 28
Rise, and after the end of the rise, the rotary shaft 26 rotates and the compact disc A also rotates.

The rotation speed of the motor 25 at the location of the first turntable 11 is set in the range of 50 to 199 rpm.

The rotation time can be set arbitrarily, and after that time, the rotation is stopped, the suction table 28 is lowered by the lifting device 27, the suction of the compact disc A by the suction table 28 is released, and the compact disc A is released. , And is placed at the placement position 11a of the first turntable 11.

Then, the first turntable 11 rotates 90 degrees and the next placement position 11a comes to this position.

That is, the lifting of the lifting device 27 and the rotation of the motor 25 are
It is performed when the rotation of the first turntable 11 is stopped.

Similarly to the first turntable 11, the second turntable 12 and the third turntable 13 have a third turntable 12 mounted on a pedestal B directly below a recovery device 31, which will be described later. In the turntable 13, a motor 25 that is lifted and lowered by a lifting device 27 is mounted on a pedestal B directly below an ultraviolet irradiation cover 32, which will be described later, like the first turntable 11.
Each of them is provided with a rotation shaft 26 which is rotated by a suction table 28 having an upper surface provided with a suction hole 28a.

The motor 25 of the second turntable 12 is 2000-3900rp
In the range of m, the motor 25 of the third turntable 13 is 50
The speed is set in the range of ~ 150 rpm.

Then, the rotation and stop of the second turntable 12 and the third turntable 13, the lifting operation by the lifting device 27, and the rotation of the motor 25 are performed at the same timing as that of the first turntable 11.

1st turntable 11, 2nd turntable 12,
The location of the suction table 28 of the third turntable 13 will be hereinafter referred to as a coating station, a shake-off station, and a curing station.

As described above, it is transported by the roller conveyor 14,
The compact disks A stacked on the carrier 15 positioned by the stopper 16 are attracted to the carry-in arm 20 by the descending of the carry-in arm 20.

Next, the compact disc A is moved to the first position by raising the carry-in arm 20, rotating by 90 degrees, and releasing the suction to lower it.
Is transferred to the mounting position 11a of the turntable 11.

Then, the first turntable 11 moves the compact disc A to the coating station by two rotations of 90 degrees.

After the movement, the first turntable 11 rotates 90 degrees again, and the transfer arm 22 rotates 45 degrees toward the first turntable 11 side, so that the suction cup 20a comes on it.

Like the loading arm 20, the transfer arm 22 is also lowered by suction to raise and lower the compact disc A, pivoted in the opposite direction of 90 degrees, and further lowered to release the suction, whereby the first turntable of the compact disc A is released. Transfer from 11 to the second turntable 12.

After that, the compact disc A transferred by the rotation of the second turntable 12 by 90 degrees moves to the shake-off station, and moves again by the rotation of the second turntable 12 by 90 degrees.

For the moved compact disc A, the second turntable 12 to the third turntable 12 are moved in the same manner as the transfer arm 22.
The compact disc A is transferred to the turntable 13 by the transfer arm 23.

Also in the third turntable 13, similarly to the first and second turntables 11.12, the compact disc A is moved to the curing station by its 90 ° rotation and then rotated twice by 90 ° so that the compact disc A is rotated. The carry-out position 13a is moved.

In the coating station, the suction table 28
Hub A2 of compact disc A that is attracted by and rotates
A drip nozzle 30 that drips the protective film agent while moving outward is provided on the outside.

The dropping nozzle 30 drops a protective film agent on the reflective film formed on the pit surface of the compact disc A while the compact disc A is rising and rotating to prevent deterioration and scratches of the reflective film. To do.

The compact disc A on which this protective film agent is dropped is
It is sent to the next shake-off station as described above.

In the shake-off station, the compact disk A that is attracted to the suction table 28 and rotates at high speed is shaken outward by the centrifugal force of the high-speed rotation, and is uniformly protected on the reflective film of the compact disk A. The film agent is dispersed to form a protective film having a uniform thickness.

The remaining protective film agent scatters from the compact disc A, is recovered by the recovery device 31 formed around the compact disc A, and is sent again to the dropping nozzle 30 by the protective film agent circulation device 34. There is no such thing as dropping onto B.

In this way, the compact disc A on which the protective film is uniformly formed is sent to the next curing station as described above.

In the curing station, for the compact disc A that is attracted to the adsorption table and slowly rotates,
Ultraviolet rays are radiated in the cover 32 to cure the protective film.

When the height sensor 19 detects that the compact disc A has been completely removed from the carrier 15 stopped by the stopper 16 of the roller conveyor 14, the stopper piece 16
b is retracted and the carrier 15 is passed.

On the other hand, the stopper piece 17a of the stopper 17 at the carry-out position is always in a projecting position so that the two carrying tools 15 do not enter between the stopper pieces 17a.17b. The piece 17a is retracted, and the carrier 1
Allow 5 passages.

At this time, the stopper piece 17b is projected, and the carrier tool 15 sent to this is stopped so that there is always one carrier tool 15 between the stopper pieces 17a and 17b.

In this way, with respect to the carrier tool 15 waiting at the position of the stopper 17, the carry-out arm 24, like the carry-in arm 20, completes hardening at the hardening station, and is rotated 90 degrees twice. The disk A is unloaded from that position and transferred.

Thus, a predetermined number of compact discs A can be mounted on the carrier 15.
When the sheets are stacked, the stopper pieces 17b are retracted, and the carrying out by the roller conveyor 14 is allowed. Therefore, the carrying tool 15 having the compact disks A stacked is carried out.

In the above-described embodiment, the main shaft C is continuously rotated, its rotation angle is detected by the rotary encoder 33, and the operation timing of the intermittent rotation unit B1 and the lifting / lowering swing unit B2 is set according to the rotation angle. Therefore, these operation timings will not be out of order.

[Effect of device]

As described above, the present invention can automatically form a protective film for preventing deterioration or damage of the reflective film formed on the pit surface of the optical information recording disk.

Since the coating of the protective film agent, which greatly affects the tact time, and the step of uniformly dispersing the protective film agent to obtain a uniform thickness are separate steps, the coating step and the step of dispersing the uniform thickness are performed. The tact time can be dramatically shortened and the number of optical information recording disks that can be processed within a fixed time can be increased as compared with the conventional one in which the process is performed in one station.

In addition, the rotation of the first, second, and third turntables and the operation of the loading arm, the transfer arm, and the unloading arm are driven from one main shaft to rotate them.
Since the ascending / descending operation is performed in synchronization, it is possible to prevent failures due to these timing deviations, generation of defective products, and the like.

[Brief description of drawings]

1 to 10 show an embodiment of the present invention. FIG. 1 is an overall plan view, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIG. FIG. 5 is a side view of the transfer arm section, FIG. 6 is a sectional view of the suction table section, and FIG. 7 is a sectional view of the first, second, and third turntable sections. The figure is a plan view of the coating station, Fig. 9 is a perspective view of the lifting / lowering device, Figs. 10 and 11 are detailed side views and plan views of the carrier lifting device, and Fig. 12 is the operation of the lifting and rotating device. FIG. 13 is a plan view of a conventional optical information recording disk. A: Compact disc, B1: Intermittent rotation unit,
B2: Lifting and rocking unit, C: Main shaft, D1.D
2 …… Timing belt, 11 …… First turntable, 12 …… Second turntable, 13 …… Third turntable, 11a.12a.13a …… Mounting position, 14 …… Roller conveyor 15 ...... Transport tool, 20 …… Intake arm, 22.23 …… Transfer arm, 24 …… Unload arm, 25 …… Motor, 26 …… Rotary axis,
27 ... Lifting device, 28 ... Suction table, 28a ... Suction hole, 30 ... Dripping nozzle, 31 ... Recovery device, 32 ... UV irradiation cover, 33 ... Rotary encoder, 34 ... Protective film agent Circulator.

Claims (1)

(57) [Scope of utility model registration request] 1. Three turntables capable of mounting optical information recording disks such as compact discs at a plurality of positions at equal intervals, a first turntable to a second turntail, and a second turntable to a first turntable. A transfer arm for adsorbing and transferring the optical information recording disks to the turntable 3 and a loading arm for transferring the optical information recording disks stacked and loaded from the loading position to the first turntable;
A carry-out arm for transferring the optical information recording disk from the third turntable to the carry-out position, and a lifting and rotating means for sucking and lifting the optical information recording disk at a predetermined position of each turntable and rotating the disk. And a dropping means for dropping the protective film agent on the optical information recording disk which is raised and rotated by the raising and rotating means of the first turntable, and an optical type which is raised and rotated at a high speed by the raising and rotating means of the second turntable. The protective film agent shake-off means for dispersing the protective film agent on the information recording disk and the protective film agent for the optical information recording disk which is rotated upward by the ascending rotation means of the third turntable are irradiated with ultraviolet rays to remove the protective film agent. Protective film curing means for curing, and intermittent rotation of the three turntables, and lifting / lowering and swinging of the transfer arm, carry-in arm and carry-out arm are transmitted from the same rotary shaft. And transmission means, said protective film coating apparatus of an optical information recording disk, characterized in that a device control signal output means in accordance with the rotation angle of the rotary shaft