JPH1145659A - Overapplication liquid removing method and device for picture tube panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the quality of a picture tube panel by surely reducing stains on the seal surface of the picture tube panel. SOLUTION: Overapplication liquid deposited on the seal surface of a picture tube panel 1 is cleaned by a cleaning roller 4 with cleaning water supply function provided in a carrying passage 3 for the picture tube panel 1 and evacuated by an evacuation collecting means 5 arranged thereunder for removal. In this way, the overapplication liquid deposited on the seal surface is wiped out by the cleaning roller 4, washed out by cleaning water and recovered with evacuation to prevent the decreasing cleaning force of the cleaning roller 4 and the occurrence of spattering followed by recovery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing excess coating liquid from a picture tube panel, which removes an excess coating solution adhering to a sealing surface of a panel among coating liquids applied to the inner surface of a picture tube panel represented by a CRT. The present invention relates to a method and an apparatus.

[0002]

2. Description of the Related Art In a picture tube, an infinite number of phosphor dots for each pixel are arranged on the inner surface of the panel, and an electron beam is irradiated while being deflected vertically and horizontally while scanning, and sequentially emits light according to a picture signal. The phosphor dots are exposed by a predetermined pattern with a coating liquid of a photocurable resin paint applied to the inner surface of the picture tube panel, and the resin material of the exposed portion is exposed. It is formed by washing and developing. After the completion of the predetermined process, the picture tube panel is joined to another funnel at the sealing surface on the lower surface.

[0003] By the way, the excess coating liquid out of the coating liquid applied to the inner surface of the picture tube panel flows down while transporting the picture tube panel downward and adheres to the sealing surface. Was removed by suction with a sponge roller.

In FIG. 3, reference numeral 21 denotes a picture tube panel;
Are transport rollers for transporting the picture tube panel 21 between processes;
Reference numeral 3 denotes a sponge roller provided on the way.

[0005] In such a conventional apparatus, the coating liquid protruding from the inner surface of the picture tube panel 21 and adhering to the sealing surface of the panel is adsorbed or washed by passing over the sponge roller 23 during transportation between processes. It is removed by wiping with a sponge roller 23 moistened with water.

[0006]

However, in the above-described conventional method of removing the excess coating solution on the sealing surface of the picture tube panel 21, half of the coating solution adhering to the sealing surface of the picture tube panel 21 is used. However, there is a problem in that if the adhered substance remains as it is and is dried, it becomes a powder state, which causes a dust defect and a bonding defect between the panel 21 and the funnel.

[0007] Further, there is a problem that the so-called sputtering, in which the applied coating liquid which has flowed off and rebounds at the collecting portion and adheres to the coating surface of the picture tube panel 21, may occur, and the quality of the picture tube panel 21 to be manufactured is deteriorated. there were.

Further, the sponge roller 23 cannot be expected to have a self-cleaning action, and there has been a problem that the coating liquid adsorbed on the roller surface adheres to another sealing surface again.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention provides a method and apparatus for removing excess coating liquid from a picture tube panel, which can surely reduce stains on the sealing surface of the picture tube panel and ensure the quality of the picture tube panel. It is intended to be.

[0010]

According to the present invention, there is provided a method for removing excess coating liquid from a picture tube panel, comprising the steps of: removing excess coating liquid adhering to a sealing surface of a picture tube panel from a cleaning roller for supplying cleaning water from the inside to the outside; And removes the excess coating liquid adhering to the sealing surface by wiping it off with the cleaning roller supplied with cleaning water. By collecting the liquid in the image tube panel, it is possible to prevent the cleaning roller itself from being stained, thereby preventing a reduction in the cleaning power, and by preventing the occurrence of sputtering accompanying the collection, thereby reliably reducing the contamination on the sealing surface of the image tube panel. Quality can be ensured.

Further, when the picture tube panel is conveyed along a conveyance path in which at least one or more cleaning rollers are arranged to remove the coating liquid, the quality of the picture tube panel can be ensured without lowering the productivity. Can be.

The apparatus for removing excess coating liquid from a picture tube panel according to the present invention is a device for removing excess coating liquid from a picture tube panel, which removes excess coating liquid adhering to a sealing surface of the picture tube panel, and is rotatable. A cleaning roller provided with a means for supplying cleaning water from the inside to the outer surface, and a vacuum suction type recovery means, and preferably at least one or more cleaning rollers are arranged on the transport path of the picture tube panel. , A vacuum suction type recovery means is provided at the lower part thereof, and the effect can be obtained by implementing the above-described removal method.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
This will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a picture tube panel which is transported between processes along a transport path 3 in which a number of transport rollers 2 are arranged in parallel. One or a plurality of cleaning rollers 4 are disposed at an appropriate position in the middle of the transport path 3, and a vacuum suction type recovery unit 5 is disposed below the cleaning roller 4. The vacuum suction type recovery means 5 is composed of a suction hopper 6 for partitioning a lower space of the cleaning roller 4 and a suction pipe 7 connected to a lower end of the suction hopper 6, and the suction pipe 7 is an exhaust means such as an exhaust pump (not shown). )It is connected to the.

As shown in FIG. 2, the cleaning roller 4 is configured by fixing a cylindrical sponge roller 9 to the outer periphery of a hollow roller shaft 8. The hollow roller shaft 8 has a plurality of outflow holes 1 penetrating from the inside toward the sponge roller 9 on the outer peripheral surface.
0 is pierced, one end of the hollow roller shaft 8 is connected to the washing water supply pipe 12 via the universal joint 11, and the other end is closed. Further, both ends of the hollow roller shaft 8 are rotatably supported by bearings 13, and a sprocket 14 is fixed to the other end so that the cleaning roller 4 is driven to rotate.

In the above construction, when the picture tube panel 1 is transported between the processes along the transport path 3, the cleaning roller 4 which is rotationally driven from outside by a sprocket 14 at a peripheral speed higher than the transport speed. Pass over Further, cleaning water is supplied to the cleaning roller 4 from a cleaning water supply pipe 12 via a universal joint 11, and the cleaning water is seeping out on the outer peripheral surface of the sponge roller 9. Therefore, the excess coating liquid adhering to the sealing surface, which is the lower surface of the picture tube panel 1, is surely wiped off by the rotating cleaning roller 4 and is washed away with the cleaning water. further,
The application liquid and the washing water that have been wiped off and washed away are vacuum-sucked by a vacuum suction type collecting means 5 provided below the washing roller 4 and are immediately collected. Therefore, the cleaning roller 4
Has a self-cleaning action with the leaching cleaning water, thereby preventing the cleaning power from being reduced due to the contamination of the cleaning roller 4 itself, and immediately sucking and discharging the vacuum, thereby preventing the occurrence of sputtering accompanying the recovery. Dirt on the sealing surface of the tube panel 1 can be reliably reduced, and the quality of the picture tube panel can be ensured.

[0017]

According to the method and apparatus for removing excess coating liquid from a picture tube panel according to the present invention, as is apparent from the above description, excess coating liquid adhering to the sealing surface of a picture tube panel is removed from the inside to the outside. The cleaning water is supplied to the cleaning roller, and the vacuum suction-type recovery means disposed under the cleaning roller is used to remove the excess coating liquid adhering to the sealing surface. It can be wiped off with a washing roller and washed off with washing water.Furthermore, by collecting by vacuum suction, it is possible to prevent a decrease in the washing power of the washing roller and to prevent the occurrence of sputtering accompanying the collection. Dirt on the surface can be reliably reduced to ensure the quality of the picture tube panel.

Furthermore, when the picture tube panel is conveyed along a conveyance path in which at least one or more cleaning rollers are arranged to remove the coating liquid, the quality of the picture tube panel is ensured without lowering the productivity. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of an apparatus for removing excess coating liquid from a picture tube panel according to the present invention.

FIG. 2 is a cross-sectional view illustrating a configuration of a cleaning roller according to the first embodiment.

FIG. 3 is a perspective view of a conventional apparatus for removing excess coating liquid from a picture tube panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Picture tube panel 3 Transport path 4 Cleaning roller 5 Vacuum suction type recovery means 12 Cleaning water supply pipe

Claims (4)

[Claims] 1. A picture tube characterized in that excess coating liquid adhering to a sealing surface of a picture tube panel is removed by washing with a washing roller to which washing water is supplied from the inside to the outside and by vacuum suction. A method for removing excess coating liquid from the panel. 2. The removal of excess coating liquid from a picture tube panel according to claim 1, wherein the picture tube panel is conveyed along a conveyance path in which at least one or more cleaning rollers are arranged to remove the coating liquid. Method. 3. An apparatus for removing excess coating liquid from a picture tube panel, which removes excess coating liquid adhering to a sealing surface of the picture tube panel, wherein the device is rotatably supported and supplies cleaning water from the inside to the outside. An apparatus for removing excess coating liquid from a picture tube panel, comprising: a cleaning roller provided with a cleaning device; 4. A transport path for a picture tube panel, wherein at least one
4. The apparatus for removing excess coating liquid from a picture tube panel according to claim 3, wherein at least one cleaning roller is disposed, and a vacuum suction type recovery means is disposed below the cleaning roller.