JPS583575B2 - Panel seal surface automatic cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color cathode ray tube manufacturing apparatus, and more particularly to an apparatus for automatically cleaning the sealing surface of a panel with a shadow mask incorporated in the panel.

Conventionally, to remove dirt from the sealing surface of a panel with a shadow mask built into the panel, it was necessary to dip diluted ammonium fluoride into Sylbon paper, wipe the panel by hand while rotating it, and use acetone for the final wipe. I used it to perform the same work as above.

As described above, work using conventional methods is inefficient and increases costs in terms of man-hours.

Furthermore, due to individual differences among workers, the degree of cleaning of the sealing surface varied.

Also, the distance between the seal surface of the panel and the mask frame is approximately 3
Because of the small size of 5 mm to 5 mm, it was difficult to automatically clean the mask frame to prevent cleaning liquid from adhering to it.

The purpose of the present invention is to eliminate the drawbacks of the above-mentioned prior art and to provide a cleaning device that can perform the work efficiently and is low in terms of man-hours and cost by developing a device that automatically cleans the sealing surface of a panel. It is something.

In order to achieve the above object, the automatic cleaning device of the present invention uses a plurality of rollers with the sealing surface of the panel with a mask installed facing downward, and approximately half of the roller diameter immersed in the liquid in the cleaning tank. By applying drive to the rollers and rotating them, the panel is moved while the sealing surface of the panel is in contact with the top surface of the roller, which scrapes cleaning liquid onto the roller surface, and the sealing surface of the panel and the roller surface are moved. This removes dirt from the sealing surface using frictional force and the effect of the cleaning liquid.

Since the distance between the sealing surface of the panel and the frame of the mask is short, it is difficult to use methods such as dipping the sealing surface in cleaning liquid without causing the cleaning liquid to adhere to the frame due to variations in the liquid level. The one-roller type cleaning device can maintain a thin and uniform film of cleaning liquid on the surface of the roller, so it is possible to constantly keep the surface to be cleaned uniformly wet.

In addition, in order to increase the amount of cleaning liquid on the surface of the immersed roller and increase the cleaning effect and the cleaning effect due to frictional force, a roller wrapped with a thin sponge or water-absorbing rubber is attached to the surface of the roller.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A one-roller type cleaning device according to the present invention will be explained below with reference to illustrated embodiments.

1 is a panel, 2 is a sealing surface of the panel 1, 3 is a shadow mask, and 4 is a frame, and the shadow mask 3 is incorporated into the panel 1.

10 is a cleaning tank in which a cleaning liquid 11 is placed.

A plurality of rollers 12 are arranged in parallel so that the vicinity of their lower ends are immersed in the cleaning liquid 11.

The surface of this roller 12 is wrapped with a sponge or water-absorbing rubber plate 13.

A drive chain 14 drives the roller 12, and is driven by a motor 15 via a drive chain 16.

Reference numeral 17 denotes a conveying lever, which is attached to a panel feeding conveyor 18 driven by a conveyor driving motor 19.

Next, the operation of the device having such a configuration will be explained.

The roller 12 is immersed in the cleaning liquid in the cleaning tank 10, the roller is driven and rotated, the panel 1 is placed on the upper surface of the roller 12, and the panel is fed by a conveyor drive motor 19 as shown in FIG. A conveyor lever 17 attached to a conveyor 18 moves the panel while sliding it on rollers 12.

Here, the rotation speed of roller 12 and panel feed conveyor 1
By appropriately combining the speeds of 8, the cleaning power of the frictional force due to the difference between the moving speed of the panel 1 and the rotational speed of the roller 12 can be adjusted.

In FIG. 3, the rotational speed of the roller 12 is reduced so that the speed at which the roller 12 feeds the channel 1 is slower than the speed of the feed conveyor 18.

Of course, the direction of rotation of the roller 12 is determined by the panel feeding conveyor 18.
Although the moving direction may be reversed, the wear of the roller 12 may become too large.

In this way, dirt adhering to the sealing surface 2 of the panel 1 is wiped off by the frictional force between the panel 1 and the roller 12.

By rotating the roller 12 in the cleaning liquid, the cleaning liquid 11 in the tank is scraped up to the upper surface of the roller 12, and the cleaning liquid that forms a film on the surface of the roller 12 washes away dirt.

By using the rollers 12 in this manner, the cleaning portion is uniformly wetted, and cleaning can be performed without causing cleaning liquid to adhere to the mask located near the sealing surface.

Since the roller is wrapped with a sponge or a water-absorbing rubber plate, the wrapping material 13 may bend under the weight of the panel 1, and the cleaning liquid may adhere to the frame of the mask located close to the sealing surface. The depth of cleaning can be freely controlled by arranging a wound roller and a smooth roller with a hard parallel surface that is not wound around every other roller, and by keeping the height dimension of the rollers constant. can.

In the cleaning apparatus according to the present invention as described above, by setting the number of cleaning tanks and drying positions according to the processing capacity and determining the moving time of the panel, efficient automatic cleaning can be performed.

Furthermore, since the cleaning is performed mechanically, a uniform cleaning effect can be obtained.

[Brief explanation of drawings]

1 and 3 are side views showing the cleaning device of the present invention,
FIG. 2 is a sectional view of the roller. 1...Panel, 2...Seal surface, 3.
...Shadow mask, 10...Cleaning tank,
11...Cleaning liquid, 12...Roller,
13... Lining material, 14... Drive chain, 15... Motor, 16...
Drive chain, 17... Conveyance lever, 18.
...Panel feeding conveyor.

Claims (1)

[Scope of Claims] 1. A cleaning tank, and a plurality of panels arranged in parallel for mounting panels such that the lower end portion is immersed in the cleaning liquid in the cleaning tank and the sealing surface of the panel is in contact with the upper end portion. rollers, a drive mechanism that rotationally drives the rollers, and a conveyor mechanism that moves the panel on the rollers. An automatic panel seal surface cleaning device that cleans the seal surface using friction generated on the seal surface. 2. The automatic panel seal surface cleaning device according to claim 1, wherein the roller has a thin plate of sponge or water-absorbing rubber wrapped around its outer peripheral surface. 3. The panel seal according to claim 1, wherein the plurality of rollers are alternately arranged with rollers having thin plates of sponge or water-absorbing rubber wound around their outer peripheral surfaces and rollers with hard surfaces without winding. Automatic surface cleaning device.