JP2573484Y2 - Printing film transfer device for liquid crystal display element - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing film transfer apparatus for forming an alignment film on a substrate of a liquid crystal display device.

[0002]

2. Description of the Related Art Conventionally, this type of printing film transfer apparatus for a liquid crystal display device has a stage 6 which reciprocates while supporting a substrate 5 of the liquid crystal display device as shown in FIG. A plate cylinder roller 4 connected via an interlocking mechanism and having a transfer plate 3 attached to the outer periphery thereof;
A transfer roller 2 for supplying ink to the transfer roller 2, and an ink damper roller 1 for contacting the transfer roller 2 and uniformly spreading the ink between the transfer roller 2 and the transfer of the stage 6 during ink transfer as indicated by an arrow in FIG. Roller 4 synchronized with
Is rotated to transfer ink onto the substrate 5 while supplying ink from the transfer roller 2 in contact with the transfer plate 3 on the surface of the plate cylinder roller 4. After the transfer, the stage 6 from which the substrate 5 has been removed is returned to the original position as shown by an arrow in FIG. 9, and the plate cylinder roller 4 is moved in a direction away from the transfer roller 2 by an air cylinder or the like (not shown). In the same manner, the rotation is returned to the original position before the transfer via the interlocking mechanism.

[0003]

In the above-described conventional printing film transfer apparatus, since the plate cylinder roller 4 is driven by an air cylinder or the like, the transfer plate 3 contacts the substrate 5 as shown in FIG. In this state, the plate cylinder roller 4 is slightly pushed up by the reaction force in the direction indicated by the arrow, and the printing pressure between the transfer roller 2 and the transfer plate 3 is reduced as shown in FIG.
3A, the amount of ink transferred to the transfer plate 3 changes. Therefore, as shown in FIG. 12, the thickness of the print film 12 transferred onto the substrate 5 changes from the middle, and uniform transfer cannot be performed. (Conventionally, this difference in film thickness is about 100 ° with respect to 500 ° of the base.)

[0004]

The present invention Means for Solving the Problems], to prevent the conventional plate the cylinder rollers abolished mechanism for driving rice planting, the interlocking mechanism between the stage and the plate cylinder roller inversion of the plate cylinder roller <br/> provided with a reversing prevention mechanism, providing the driving device of the plate cylinder roller rotated forward plate cylinder roller to the transfer start position, or alternatively, attached to the outer periphery surface of the plate cylinder roller
It was the transfer roller and the plate cylinder roller which rotates transfer plate and contact is provided with a drive device for moving along a direction away.

[0005]

[Action] The stage and the plate cylinder inversion preventing mechanism provided on the interlocking mechanism for connecting the roller and the plate cylinder roller driving device,
When the stage is returned, the plate cylinder roller acts to rotate forward to the transfer start position where the transfer plate provided on the outer peripheral surface thereof comes into contact with the transfer roller. The driving device of the transfer roller, when backward return of the stage, set to the outer peripheral surface of the drum roller is reversed driven via the interlocking mechanism
That you are for work cormorant it'll prevent that kicked the transfer plate to reverse transfer the ink in contact with the transfer roller.

[0006]

1 is a simplified perspective view of a main part of a first embodiment of the present invention. As shown, a ball screw 8 rotationally driven by a motor 7 is engaged with a part of the stage 6 and drives the stage 6 back and forth.
The plate cylinder roller 4 opposed to the stage 6 is connected to the stage 6 via an interlocking mechanism including a plate cylinder gear 4 ′, an intermediate gear 11, and a power transmission shaft 10.
The stage 6 and the power transmission shaft 10 are engaged with each other by a rack 6 ′ formed on the lower surface of the stage 6.
This is achieved by engaging the pinion 10 'provided at the end of. Here, in the printing film transfer apparatus of the present invention, a reverse rotation preventing mechanism (not shown) such as a one-way clutch is provided in the power transmission shaft 10 to prevent the interlocking mechanism from rotating reversely. A motor 9 for reversing the plate cylinder roller 4 is engaged with one side of the plate cylinder gear 4 ', and the plate cylinder gear 4' constitutes a driving device for the plate cylinder roller.

In the printing film transfer apparatus of the present invention having the above structure, at the start of transfer, the stage 6 on which the substrate 5 is placed is pushed forward (rightward in the figure) by the above-described mechanism as shown in FIG. Then, the plate cylinder roller 4 connected to the stage 6 via the above-described interlocking mechanism rotates counterclockwise as shown by an arrow, and the transfer plate 3 on the surface of the plate cylinder roller 4 eventually becomes an ink-striking roller. Transfer roller 2 rotating in contact with 1
, And ink is supplied from the transfer roller 2. When the stage 6 further moves forward, the transfer plate 3
Is for transferring a printed film onto the surface of the substrate 5 as shown in FIG. At this time, in the present invention, since the plate cylinder roller 4 does not have a movable structure as described above, the plate cylinder roller 4 moves by the reaction force at the time of transfer, and the printing pressure of the transfer roller 2 on the transfer plate 3 is reduced. It does not change. Therefore, the amount of ink supplied to the transfer plate 3 is kept constant, and a printing film having a constant thickness is formed on the substrate 5. The substrate 5 having the printed film formed on the upper surface in this manner is taken out at the end of movement of the stage 6, and then the stage 6 moves in the opposite direction as shown by the arrow in FIG. At this time, the series of operations are completed. At this time, the plate cylinder roller 4 connected to the stage 6 via the interlocking mechanism is not inverted by the above-described one-way clutch or the like, and the plate cylinder roller 4 is not inverted. Torso gear 4 '
The motor 9 is driven to rotate forward to the transfer start position by the motor 9 meshed with.

In the printing film transfer apparatus of the present invention, the printing film is transferred onto the substrate of the liquid crystal display element by repeating the above operation.

FIGS. 5 and 6 show a second embodiment of the present invention, in which a transfer roller 2 rotating in contact with a transfer plate 3 is provided.
The ink roller 1 that rotates in contact with the transfer roller 2 is driven by a drive device (not shown) in a direction in which the ink roller 1 comes into contact with and separates from the plate cylinder roller 4 on which the transfer plate 3 is mounted. In this case, at the start of the transfer, first, the transfer roller 2 and the ink setting roller 1 move toward the plate cylinder roller 4 as shown in FIG. 5, and thereafter, in synchronization with the movement of the stage 6 as in the above-described embodiment. Plate cylinder roller 4
Rotates to transfer the ink supplied from the transfer roller 2 onto the substrate 5 via the transfer plate 3 attached to the surface of the plate cylinder roller 4. Then, after the transfer, the ink sticking roller 1 and the transfer roller 2 are driven by a driving device (not shown) in a direction away from the plate cylinder roller 4 as shown in FIG. Therefore, there is no possibility that the ink will be reversely transferred from the transfer roller 2 to the transfer plate 3 on the surface of the plate cylinder roller 4 which is driven in reverse by an interlock mechanism (not shown) with the return movement of the stage 6.

As described above, also in this embodiment, since the plate cylinder roller does not have a movable structure, the printing pressure of the transfer roller on the transfer plate does not change before and after the transfer to the substrate, and is constant. Is supplied to the transfer plate.
Further, since the transfer roller is separated when the plate cylinder roller is returned to the reverse position, the ink is not unevenly formed on the transfer plate due to the reverse transfer, and a print film having a uniform thickness is formed on the substrate.

In this embodiment, an example is shown in which a power transmission shaft is provided with a reversing prevention mechanism such as a one-way clutch. However, the reversing prevention mechanism only needs to be able to prevent the plate cylinder roller from reversing when the stage returns. It may be provided at any position in an interlocking mechanism such as a plate cylinder gear and an intermediate gear.

[0012]

As described above, the printing film transfer device for a liquid crystal display element according to the present invention can return the stage to the transfer start position without moving the plate cylinder roller. When it comes in contact with the substrate, the plate cylinder roller is not pushed up, and therefore, the printing pressure between the transfer roller and the transfer plate does not change during the transfer, and a uniform thickness uniform transfer on the substrate is achieved. It can be performed, and has an excellent effect of improving the quality of the manufactured liquid crystal display element.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of the present invention.

FIG. 2 is a simplified side view of the same before the start of transfer.

FIG. 3 is a simplified side view at the time of transfer, according to the first embodiment;

FIG. 4 is a simplified side view at the time of return, according to the embodiment;

FIG. 5 is a simplified side view before transfer is started according to a second embodiment.

FIG. 6 is a simplified side view at the time of return.

FIG. 7 is a simplified side view of a conventional example before transfer is started.

FIG. 8 is a simplified side view at the time of transfer.

FIG. 9 is a simplified side view at the time of return.

FIG. 10 is an enlarged side view of a main part at the start of transfer, according to the embodiment;

FIG. 11 is an enlarged side view of a main part at the time of transfer, according to the third embodiment;

FIG. 12 is an enlarged side view of a main part showing a conventional transfer example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ink roller 2 Transfer roller 3 Transfer plate 4 Plate cylinder roller 4 'Plate cylinder gear 5 Substrate 6 Stage 7 Stage drive motor 8 Ball screw 9 Inversion motor 10 Power transmission shaft 11 Intermediate gear

Claims (2)

(57) [Scope of request for utility model registration] 1. A stage that reciprocates while supporting a substrate of a liquid crystal display element, a plate cylinder roller that is connected to the stage via an interlocking mechanism, and has a transfer plate mounted on an outer periphery thereof, a transfer roller for supplying ink to the plate, in a liquid crystal display printed film transfer apparatus device provided with the ink kneading roller extending uniformly ink between the transfer roller in contact with the transfer roller, the plate in the interlocking mechanism provided with a reversing prevention mechanism for preventing the inversion of the cylinder roller, it is the plate cylinder roller annexed driving device of the plate cylinder roller rotated forward to the transfer start position plate cylinder roller during backward movement returning the stage A printing film transfer device for a liquid crystal display element. 2. A stage which supports a substrate of a liquid crystal display element and reciprocates, a plate cylinder roller which is connected to the stage via an interlocking mechanism and has a transfer plate mounted on an outer periphery thereof, and a transfer device which comes into contact with the transfer plate and transfers the transfer plate. In a printing film transfer apparatus for a liquid crystal display device, comprising a transfer roller for supplying ink to a plate, and an ink setting roller for contacting the transfer roller and uniformly spreading ink between the transfer roller, the stage is returned to a return position. A printing film transfer device for a liquid crystal display device, further comprising a driving device for driving the transfer roller and the ink setting roller in a direction away from the plate cylinder roller.