RU1834718C - Crt panel flushing device - Google Patents

Abstract

Usage: .for washing the inner surface of the bead of the front panel of the cathode ray tube. SUMMARY OF THE INVENTION: a flushing panel device comprises a flushing roller mounted for rotation, advancing and retreating by means of an operating device, an annular groove is made on its side surface, nozzles for supplying cleaning water to the groove and a medium supply source. Deviation of the cleaning water can be suppressed by pushing the cleaning water into the groove so that the fraction of the worst quality front panels is reduced, resulting in an increase in productivity. 2 C.p. fs, 4 ill.

Description

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WITH

The present invention relates to a panel flushing device for a cathode ray tube, and in particular, to a device having an improved flushing roller for flushing .. the inside surface of a bead face.

The use of the known device in the washing operation of a cathode ray tube panel is illustrated in Fig. 1.

In this case, the cylinder-shaped washing roller 1 is rotated by a specific rotating device, then contacts the inside of the bead of the faceplate 2, which is held by the carrier head 3. which is to rotate. The flushing roller 1 is rotatably mounted, advancing and retracting by the device. Work environment source 4

for supplying cleaning water is placed adjacent to the washing roller 1.

. The flushing roller 1, usually the flushing panel of the cathode ray tube device, will then erase the residue remaining on the inner surface of the side portion of the faceplate 2.

In the above conventional washing device, when the washing is carried out by the rotating washing roller 1 according to the known device, the cleaning water does not have a significant effect, since it is not supplied under pressure, if it is supplied to the roller under pressure, it will be sprayed onto the inner surface of the front panel on which phosphor strips are formed ..

If the phosphor strips of the front panel get dirty with a reflected cleaning brush

with

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milking, as it hits the roller, it becomes impossible to use phosphor strips due to the spots formed on them.

It is an object of the present invention to provide an improved panel flushing device for a cathode ray tube capable of effectively preventing deviation of cleaning water discharged from a nozzle onto a flushing roller.

In order to achieve the goal, a panel washing device for a cathode ray tube is provided, including a washing roller so mounted. so that it can rotate, advance and retreat, and including a nozzle for pushing the cleaning water onto the washing roller, in which an annular groove forms around the outer circumference of the washing roller, and the nozzle is mounted to push the cleaning water into the groove.

Figure 1 shows schematically a conventional washing panel device; FIG. 2 is a schematic illustration of a panel-washing device according to the present invention: FIG. 3 is a partially torn out section of a roller in another washing embodiment, a panel of a device according to the present invention, and FIG. 4 is a side view of a roller in one other an embodiment of a panel washer of the device of the present invention.

The flushing panel device (see FIG. 2) contains an improved roller 1 adjacent to the panel 2 mounted in the carrier head 3, a nozzle 4 for supplying cleaning water and a working device (not shown) for the operation of the roller 3. The faceplate 2 is held by the carrier 3, the flushing roller 1 is in close contact with the inner surface of the bead of the faceplate 2, and the flushing roller acts to rotate, advance and retreat using a working tool. The nozzle 4 for ejecting the cleaning water is disposed adjacent to the side surface of the rinsing roller 1. According to the characteristics of the present invention, an annular groove 5 is formed around the outer circumference of the rinsing roller 1 and the nozzle 4 for ejecting the cleaning water is installed adjacent to and directed to the groove 5. Here, as shown in FIG. 3, it is preferable that the cross section of the groove 5e of the washing roller 1 is in the form of a dovetail. Further, as shown in Figure 4, it is more preferable that the groove 5b is formed in the form of a wave, or in the form of a zigzag.

Flushing panel device for

A cathode ray tube constructed as described above in accordance with the present invention is characterized in that the washing panel device comprises a washing roller 1 having an annular panel groove 5 on its side surface and the nozzle 4 is placed adjacent to the groove 5. Clean water. ejected from the nozzle 4, is fed into the groove 5 of the washing roller 3 to erase the phosphor phosphor 5 and other sediment adhering to the inner surface of the front panel, so that the cleaning water flows through the groove 5.

Spraying cleaning water onto the inside of the faceplate 2

0 is effectively suppressed according to the characteristics of the present invention.

In particular, the suppressive effect on the spraying of the cleaning water is greatly enhanced by the swallow tail groove 5 shown in FIG. As well as with the dovetail groove, the cleaning effect is enhanced by the wave-shaped groove 5, as illustrated in figure 4, because the cleaning water

0 is applied to a large area of the side portion of the front panel.

As described above, according to the panel washing device for the cathode ray tube of the present invention,

5 when the inner surface of the face of the faceplate is clean, spraying of cleaning water onto the inner face of the faceplate is suppressed due to a groove formed on the surface of the wash roller. Consequently, the fraction of inferior faceplates created during the washing operation is noticeably reduced, resulting in a rise in productivity.

5

Claims (3)

The formula of the invention. A cathode-ray tube washing device comprising a punching roller mounted rotatably, a working medium supply source to the washing roller and a relative displacement drive of the panel and the washing roller, characterized in that the working medium source 5 is made in the form of a nozzle, the relative displacement drive is connected to the roller, moreover, an annular groove is made on the side surface of the roller, and the nozzle is installed with the possibility of supplying a working medium to the roller groove. 2. The device according to p. 1. of t and h. that the cross section of the annular groove of the washing roller has the shape of a dovetail. , -about , figure 1 5a 1 (pt / g. W 3. The device according to claims 1 and 2, wherein the annular groove has a wave shape in the longitudinal direction. -g rx.2 / V OF tpt / e.4