JPH0985187A - Sponge squeeze device for panel cleaning head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sponge squeeze device for a panel cleaning head by which sufficient squeezing effect is obtained without shortening the life of the sponge. SOLUTION: A squeeze roller 6 is arranged parallel to the longitudinal direction of a copying block 9 on which a sponge 12 is fitted, and also the squeeze roller 6 is freely rotatably supported by a pair of roller receiving members 7. While the copying block 9 is moved in the direction orthogonal to the axial direction of the squeeze roller 6, the sponge 12 is brought into press contact with the outer peripheral surface of the squeeze roller 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sponge squeezing device for a panel cleaning head for wiping off water droplets remaining on the outer surface of a picture tube panel.

[0002]

2. Description of the Related Art Generally, when a phosphor stripe is formed on the inner surface of a picture tube panel, G (green) → B (blue) → R is handled while one color is handled by one independent station.
The phosphor slurry of each color is applied in the order of (red). At that time, processes such as drying, exposing, and developing the phosphor slurry are repeated for each color. In the process of forming the phosphor stripes, the cathode ray tube panel is washed with pure water or the like, and the drying process for that purpose is focused on the inner surface of the panel that is the surface on which the phosphor stripes are formed, and the cleaning is performed on the outer surface of the panel. Often, the water splashed to the panel and the water transferred from the panel transfer head to the outer surface of the panel remain as they are. If water drops adhere to the outer surface of the panel,
At the time of so-called outer surface auxiliary exposure, in which ultraviolet rays are applied from the outer surface of the panel after applying the phosphor slurry, exposure unevenness occurs due to the lens effect of water droplets. Therefore, it is necessary to wipe off the water droplets attached to the outer surface of the panel cleanly before exposure.

Normally, to wipe off water drops on the outer surface of the panel,
A panel cleaning head having a copy block attached to the tip of the robot arm is used. In this panel cleaning head, as shown in FIG. 4, a copying block 33 is attached to the tip portion of the robot arm 31 via a telescopic rod 32, and the copying block 33 is held by the biasing force of a compression coil spring 34. Further, a sponge 35 having excellent water absorption is attached to the lower surface of the copying block 33, and the sponge 35 is pressed against the outer surface of the picture tube panel to wipe off water droplets. By the way, when the water droplets on the outer surface of the panel are wiped off with the sponge 35, the inside of the sponge 35 becomes saturated with the absorbed water.
It is necessary to remove the water absorbed by the sponge 35 as needed. In the conventional sponge squeezing device, as shown in FIG. 4, the sponge 35 is pressed against a squeezing plate 36 having holes, and the water squeezed out of the sponge 35 is received by a tray 37.

[0004]

However, in the conventional sponge squeezing device, the sponge 35 is replaced by the squeezing plate 36.
Even when it was pressed against, a difference was generated in the degree of escape of water between the area where the holes of the diaphragm plate 36 were vacant and the area other than that, and the water could not be sufficiently squeezed out over the entire area of the sponge. Further, if the pressing force of the sponge 35 against the diaphragm plate 36 is made extremely large, the diaphragm effect is adversely affected by the bending of the diaphragm plate 36. Therefore, there is a limit to increase the pressing force of the sponge 35. Therefore, sponge 35
The robot arm 31 is pressed against the diaphragm plate 36.
It is conceivable that the copying block 33 is reciprocally moved in the horizontal direction X by the driving of. However, in this case, although a higher diaphragm effect can be obtained than when the sponge 35 is simply pressed from one direction, it is rubbed with the diaphragm plate 36. There was another problem that the sponge 35 was damaged and the life of the sponge 35 was extremely shortened.

The present invention has been made to solve the above problems, and an object thereof is to provide a sponge squeezing device for a panel cleaning head which can obtain a sufficient squeezing effect without shortening the life of the sponge. It is in.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, in which a sponge is attached to a copying block provided on the head tip side, and the sponge is attached to the outer surface of the picture tube panel. A sponge squeezing device for a panel cleaning head that wipes water droplets while pressing the squeeze roller, and includes a squeezing roller that is arranged in parallel with the longitudinal direction of the copy block and is rotatably supported by a pair of roller receiving members. The sponge is pressed against the outer peripheral surface of the squeezing roller while moving the copying block in a direction orthogonal to the axial direction of the roller.

Therefore, according to the sponge squeezing device of the present invention, the contact state between the sponge and the squeezing roller becomes a line contact, and the sponge is squeezed out in order from one end to the other end.
Moreover, during the movement of the copying block, it is possible to reliably prevent the water from flowing from the unsqueezed sponge region to the already-squeezed sponge region, so that the water can be sufficiently squeezed out over the entire sponge. Further, when the sponge is pressed against the outer peripheral surface of the squeezing roller, the squeezing roller also rotates with the movement of the copying block, so that the sponge does not rub.

[0008]

1 is a view for explaining an embodiment of a sponge squeezing device for a panel cleaning head according to the present invention, in which (a) is a plan view and (b) is a side view thereof. Shows. In the configuration of the sponge squeezing device shown in FIG. 1, the sponge squeezing tank 2 is placed and fixed on the device mount 1. The sponge squeezing device 2 is divided into two spaces by a partition plate 3, one of which (the left side in the drawing) is used as a sponge cleaning area 4, and the other (the right side of the drawing) is used as a sponge squeezing area 5. .

Cleaning water w such as pure water is stored inside the sponge cleaning area 4. On the other hand, inside the sponge squeezing area 5, the squeezing roller 6 extends across the width direction.
Has been erected. Both ends of the aperture roller 6 are supported by a pair of roller receiving members 7. A bearing or the like is incorporated in the fitting portion between the squeezing roller 6 and the roller receiving member 7, so that the squeezing roller 6 is rotatably supported by the roller receiving member 7.

Here, the structure of the panel cleaning head will be briefly described. First, the copying block 9 is attached to the tip portion (head tip side) of the robot arm 8. The copying block 9 has a semicylindrical cross-section and is a semicylindrical shape, and its longitudinal dimension is set to face the width dimension of a picture tube panel (not shown). Further, the copy block 9 is connected to the robot arm 8 via the telescopic rod 10 and is held by the biasing force of the compression coil spring 11. Further, a sponge 12 is attached to the lower peripheral surface of the copy block 9. This sponge 12
Both ends of the are fixed to the copy block 9 by a fastening force of a screw (not shown).

Here, with respect to the panel cleaning head having the above structure, the squeezing roller 6 in the sponge squeezing area 5 is arranged in parallel with the longitudinal direction (depth direction in the drawing) of the copying block 9. Further, inside the sponge cleaning area 4 as well, the squeezing roller 13 has the same configuration as described above.
And a roller receiving member 14, of which the squeezing roller 13 is disposed at substantially the same height as the liquid surface of the cleaning water w.

Next, the operation of the sponge diaphragm device during panel cleaning will be described. First, as shown in FIG. 2A, a picture tube panel (hereinafter, simply referred to as a panel) P before being exposed (after phosphor coating), which is a wiping target, is
It is transferred in the air by a panel transfer machine (not shown) equipped with a panel suction pad and supplied to a predetermined cleaning position. At this time, the outer surface of the panel P is arranged facing upward. Next, as shown in FIG. 2 (b), the rod of the panel pressing jig 15 using an air cylinder or the like is advanced,
The panel P is positioned and fixed at the cleaning position.

Then, as shown in FIG. 2 (c), the panel cleaning head descends to sponge 1 on the outer surface of the panel.
2 is pressed, and as the head moves, water droplets attached to the outer surface of the panel are wiped off by the sponge 12. At this time, the copying block 9 is moved up and down along the outer surface of the panel by the expansion / contraction operation of the expansion / contraction rod 10 while being biased toward the panel P by the compression coil spring 11. afterwards,
When the cleaning of the panel P is completed, as shown in FIG. 2D, the panel P is again air-transferred by the panel transfer machine and sent to the post-process position. Meanwhile, the panel cleaning head is moved to the sponge cleaning tank 2 by driving the robot arm, and the water absorbed by the sponge 12 is removed by the following procedure.

First, when the outer surface of the picture tube panel is wiped off, dirt such as dust is taken into the sponge 12 together with water droplets. Therefore, first, a head cleaning head is arranged in the sponge cleaning area 4, and the sponge 12 is dipped in the cleaning water w stored therein. Next, the panel cleaning head is horizontally moved to the squeezing roller 13 side while the sponge 12 is immersed in the cleaning water w, and the sponge 12 is pressed against the outer peripheral surface of the squeezing roller 13 during the movement. As a result, the dirt taken into the sponge 12 is squeezed out together with the water by pressure contact with the squeeze roller 13, and is efficiently removed.

Subsequently, the panel cleaning head is moved from the sponge cleaning area 4 to the sponge squeezing area 5 in order to remove a large amount of water contained in the sponge 12 by immersion in the cleaning water w. In the sponge squeezing area 5, the copying block 9 is arranged at substantially the same height as the squeezing roller 6, and the copying block 9 is horizontally moved toward the squeezing roller 6 side as it is. As a result, the sponge 12 mounted on the copying block 9 is pressed against the outer peripheral surface of the squeezing roller 6 as shown in FIG. At this time, the sponge 12
Along with the expansion / contraction operation of the expansion / contraction rod 10 according to the biasing force of the compression coil spring 11 (the copying operation of the copying block 9), the squeezing roller 6 is sequentially contacted from its end.

In this state, the sponge 12 and the squeezing roller 6
Since the contact state with the line block is line contact, and further, while the copying block 9 is moving, water is prevented from wrapping around from the unsqueezed sponge region 12a to the sponged region 12b that has been drawn. The water can be surely squeezed out. Further, in the state where the sponge 12 is pressed against the outer peripheral surface of the squeeze roller 6, the squeeze roller 6 also rotates with the movement of the copying block 9, so that the sponge 12 does not rub. Therefore, the moisture can be efficiently removed without damaging the sponge 12.

By the way, in the past, since the water absorbed in the sponge could not be sufficiently squeezed out,
If the sponge became dirty due to panel cleaning, the sponge was replaced immediately without washing with water. Therefore, the replacement frequency of the sponge is extremely high. However, in the embodiment described above, the sponge 1
Even if 2 is immersed in the cleaning water w, the sponge squeezing tank 2 is provided with the sponge cleaning area 4 because the water content of the sponge 12 can be sufficiently squeezed out by pressure contact with the squeezing roller 6. I try to do it. As a result, it is not necessary to replace the sponge due to dirt, so that the frequency of replacement of the sponge can be made lower than in the past.

In the above-described embodiment, the sponge 12 is attached to the peripheral surface of the semicylindrical copying block 9, but the reason is as follows. That is, by making the surface shape of the sponge 12 a cylindrical surface along the peripheral surface of the block, in the panel cleaning, the surface of the sponge 12 can be used in various ways with respect to the outer surface of the panel simply by changing the tip inclination angle of the robot arm 8. This is because, when the sponge 12 is brought into contact with the outer peripheral surface of the squeezing roller 6, it is possible to effectively suppress fuzz at the end of the sponge. However, it is needless to say that the same function and effect as described above can be obtained by adopting the sponge squeezing device of this embodiment even for a panel cleaning head including a sponge having a rectangular cross section as in the past.

[0019]

As described above, according to the sponge squeezing device of the present invention, the contact state between the sponge and the squeezing roller becomes a line contact, and in this state, water is squeezed out in order from one end of the sponge to the other end. As a result, the water can be sufficiently squeezed out over the entire area of the sponge. Further, since the squeeze roller also rotates with the movement of the copying block, the sponge is not damaged. Therefore, a sufficient squeezing effect can be obtained without shortening the life of the sponge.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an embodiment of a sponge squeezing device according to the present invention.

FIG. 2 is a diagram illustrating an operation of the apparatus in the embodiment.

FIG. 3 is a diagram showing a contact state between a squeezing roller and a sponge.

FIG. 4 is a diagram illustrating a conventional sponge squeezing device.

[Explanation of symbols]

 6 Squeeze roller 7 Roller receiving member 9 Copy block 12 Sponge

Claims (1)

[Claims] 1. A sponge squeezing device for a panel cleaning head, wherein a sponge is mounted on a copying block provided on the tip side of the head, and the sponge is pressed against the outer surface of the picture tube panel to wipe off water droplets. And a squeezing roller that is rotatably supported by a pair of roller receiving members and is arranged in parallel with the longitudinal direction of the sponge roller while moving the copying block in a direction orthogonal to the axial direction of the squeezing roller. Is brought into pressure contact with the outer peripheral surface of the squeezing roller.