JPH02172135A - Panel cleansing device for picture tube - Google Patents

Abstract

PURPOSE:To prevent a skirt part of a panel from being stained by a roller by providing an absorbing member for absorbing and removing slurry or the like stuck to the roller while closely contacting with peripheral face of the roller. CONSTITUTION:A sponge 4 is provided closely connected to a peripheral side 1a of a roller 1 contacting with the seal surface of a panel 2 rotating tracing the rotation of the panel 2. In this way, slurry or the like stuck to the peripheral side 1a of the roller 1 is absorbed and removed by the sponge 4 so as to cleanse the peripheral side, that is, a contact face with the panel 2. Accordingly, it is excluded that slurry or the like is splashed on the skirt part 2b of the panel 2 for being restuck.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a cathode ray tube panel cleaning device, particularly a rim washer device.

[Conventional technology]

In general, the method for forming the fluorescent surface of a black matrix color cathode ray tube is to form a black matrix pattern (
For example, Japanese Patent Publication No. 46-218), a method of forming phosphor layers constituting green, blue, and red phosphor pixels in corresponding holes of this black matrix pattern. In the process of forming the black matrix pattern and the phosphor layer, the slurry containing the original absorber or phosphor coated on the circular surface of the glass panel is exposed to light through a shadow mask, and then washed with hot water spray, etc. Development is performed to obtain the desired black matrix type fluorescent surface.

This cleaning method using hot water spray sprays warm water onto the panel (c) surface to clean and remove the applied slurry that should be removed, but the slurry that has been cleaned and removed may adhere to the skirt of the panel. Therefore, a device called a rim washer is used to spray warm water from the tip of the nozzle η) to wash away the rim.

FIG. 2 shows the roller mechanism of the rim washer gW. In the figure, 1 is the seal of panel 2 [contacting river 3;
A roller that rotates following the rotation of the panel 2. This roller l regulates the position of the nozzle of a rim washer (not shown), and controls the nozzle.
The hot water jetted toward the circular surface of the skirt portion 2b is used to clean a preferable position of the skirt portion 2b. Note that 3 is a roller cover.

[Problem to be solved by the invention]

However, when the slurry layered on the skirt portion 2b of the panel 2 is washed, it flows onto the sealing surface 2a and is layered on the roller 1. Therefore, as the roller 1 rotates, the slurry adhering to the roller 1 is splashed up again onto the skirt portion 2b, and the skirt portion 2b, which has been thoroughly cleaned, is
There was a risk that the material would become contaminated with slurry again.

In view of the above conventional problems, an object of the invention is to provide a cleaning device in which there is no possibility that the skirt portion will be soiled again by the rollers.

[Means to solve the problem]

The purpose of the above is to use an absorbing member that adsorbs and removes slurry etc. adhering to the roller in a cathode ray tube panel cleaning device that has a roller mechanism that contacts the sealing surface of the panel and rotates following the rotation of the panel. This can be achieved, for example, by providing a sponge in contact with the circumferential surface of the roller.

[Effect]

By the above means, the slurry and the like deposited on the circumferential surface of the roller is adsorbed by the sponge and removed, resulting in cleaning, so that the skirt portion of the panel is not contaminated by the roller.

〔Example〕

An embodiment according to the present invention will be described below with reference to FIG.

Note that the same members as in FIG. 2 are given the same reference numerals, and their explanations will be omitted.

FIG. 1 shows that in the configuration shown in FIG. 2, a sponge 4 is provided in contact with the circumferential side surface 1a of a roller 1 that contacts the sealing surface 2a of the panel 2 and rotates following the rotation of the panel 2. It has characteristics.

By doing this, the peripheral surface 1a of the roller 1
The slurry, etc. that has adhered to the roller 1 is adsorbed and removed by the sponge 4, and the peripheral surface, that is, the contact surface with the panel 2, becomes clean, so the slurry, etc. that has adhered to the roller 1 is splashed up to the skirt portion 2b of the panel 2 and re-attached. There's nothing to do.

In addition, the slurry etc. adsorbed to the sponge 4 should be removed from the sponge 4.
Spray water from the water jet nozzle 5η) provided toward the
By removing this, the sponge 4 is always kept clean and can be used continuously.

Reference numeral 6 denotes a sponge holder, which is configured to bring the sponge 4 into contact with the circumferential surface of the roller 1 with an appropriate pressing force, and to hold the sponge 4 so that it can be replaced if necessary.

〔Effect of the invention〕

According to the present invention described above, the skirt portion of the panel can be effectively cleaned, and since there is no redeposition of slurry, etc., the cleaning time can be reduced by more than 20% compared to the conventional method, which is effective in improving productivity. Furthermore, since it is sufficient to simply bring the sponge into contact with the circumferential surface of the roller, it can be realized easily at low cost.

[Brief explanation of the drawing]

FIG. 1 is a side view of a main part of a roller mechanism according to an embodiment of the present invention, and FIG. 2 is a side view of a main part of a conventional roller mechanism. 1... Roller 13... Circumferential side, 2...
...Panel, 2a...Seal surface, 2b...Skirt part, 4...Sponge, 5...Water injection nozzle. Agent: Patent Attorney Masaru Ogawa

Claims (1)

[Claims] 1. In a cathode ray tube panel cleaning device having a roller mechanism that contacts the sealing surface of the panel and rotates following the rotation of the panel, slurry etc. adhering to the roller is adsorbed and removed. A cathode ray tube panel cleaning device characterized in that a sponge is provided on the circumferential side of the roller. 2. In a cathode ray tube panel cleaning device that has a roller mechanism that contacts the sealing surface of the panel and rotates following the rotation of the panel, a sponge is placed around the roller to absorb and remove slurry etc. adhering to the roller. A panel cleaning device for a cathode ray tube, characterized in that a water jet nozzle is provided on a side surface and faces the sponge for removing slurry or the like adsorbed on the sponge.