JPS6063852A - Device for washing sealing surface of panel - Google Patents

Abstract

PURPOSE:To enable sufficient washing of the sealing surface of a panel to be performed without causing any liquid splash or the like regardless of the kind of the tube by bringing spongy rollers impregnated with washing liquid discharged from a washing liquid supply pipe into contact with the sealing surface and making the spongy rollers and the sealing surface in friction with each other. CONSTITUTION:After a position-detecting means or the like confirms that a panel 15 is sent to the washing position, a cylinder 35 moves to elevate the whole of a container 25 until the outer circumference surfaces of spongy rollers 31 touch the sealing surface 16 of the panel 15. Since the panel 15 is rotated in the direction indicated by arrow (b) by the mechanism of a panel conveyor 18, the spongy rollers 31 are rotated in the directions indicated by the arrows respectively by causing the sealing surface 16 to touch the outer circumference surfaces of the spongy rollers 31. At this point, washing liquid is discharged from the small holes 28 of a washing liquid supply pipe 26 and homogeneously permeates the spongy rollers 31. Accordingly, when the panel 15 rotates and the spongy rollers 31 rotate according to the rotation of the panal 15, the sealing surface 16 becomes in friction with the outer circumference surfaces of the spongy rollers 31 impregnated with the washing liquid thereby being sufficiently washed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a panel seal surface cleaning device used in the manufacturing process of color cathode ray tubes.

[Technical background of the invention and its problems]

The manufacturing process of color cathode ray tubes includes panel mask assembly process, black stripe placement process, green◆blue-red three-color phosphor stripe placement process, filming and aluminum vapor deposition process, baking process, frit sealing process, and electron gun. It consists of a sealing and exhaust process, and an explosion-proof banding process.
A finished product is created by going through these steps one after another.

Among these manufacturing steps, the degree of cleanliness of the panel sealing surface is extremely important in the steps prior to the frit sealing step, and has an important effect on the characteristics and yield of the product.

That is, when performing frit sealing, if the panel sealing surface is dirty, crystallization of the frit glass in that area will not proceed, resulting in poor welding between the panel and the funnel. For example, in the previous black stripe and phosphor stripe arrangement process, if graphite or phosphor sticks to the panel sealing surface and stains it, it will cause welding failure during the frit sealing process, and the adherents will locally peeling off,
This may enter the fluorescent surface and cause damage to the fluorescent film.
This may indirectly enter the holes of the shadow mask and cause clogging.

To prevent such problems, it is necessary to keep the panel seal surface clean at all times. Conventionally, panel seal surfaces were cleaned as follows. For example, before the frit seal, it was cleaned as shown in Figure 1. In the figure, 11
Reference numeral 11 denotes a plurality of spongy rows for cleaning, which are arranged side by side with their lower halves immersed in the cleaning liquid in the cleaning liquid tank u. These plurality of cavernous rollers are connected to each other by a drive chain D, and one of them is connected to a drive motor α.
Connect to Oji via chain a3. (IS is a panel, and it is placed so that its sealing surface (1e) is in contact with the outer peripheral surface of the spongy roller 11.

In the above configuration, by driving the drive motor I, each spongy roller av is rotated in the direction of the arrow by the chain 03. Since the lower half of each spongy roller t1η is immersed in the cleaning liquid, it contains a sufficient amount of the cleaning liquid, and as it rotates, it comes into contact with the sealing surface C161 of the panel a9, and while cleaning this together with the cleaning liquid, the Transfer α9 in the direction indicated by the arrow.

However, according to the above-mentioned cleaning method, since the panel α9 is progressively conveyed by a full spongy roller, there is almost no frictional force against the seal fixation, and the cleaning is done simply by the wetness of the cleaning liquid, resulting in sufficient cleaning. I couldn't find the strength. Also panel σ
If 9 has a large weight, the seal rotation will bite into the spongy roller [11] to some extent, and the outer and inner walls on both sides of the sealing surface will also be washed by this biting, but for small pipes (for example, 10 inches or less) Since there was no biting in the panel, only the sealing surface was washed, and sufficient cleaning was not performed.

Further, in the process of disposing black stripes and phosphor stripes, cleaning was performed as shown in Figures 1' and 2. In this case, the panel α9 is held by the panel conveyor α11 and is conveyed to the illustrated cleaning position. al is a spongy roller, and a cleaning liquid supply pipe (2) passes through the center of its shaft, and the cleaning liquid is dripped onto the upper end surface of the spongy roller (19) from the cleaning liquid discharge pipe (21) installed at its upper end. However, according to the above cleaning method, since the cleaning liquid is discharged from the cleaning liquid discharge tube near the fluorescent surface, liquid splashes are likely to occur, which is likely to be a drawback of the fluorescent surface.In addition, the load is applied to one side. This causes problems such as local wear of the spongy roller I and reduced cleaning ability.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a panel seal surface cleaning device that does not cause liquid splashing or the like and has sufficient seal surface cleaning ability without being affected by differences in pressure.

[Summary of the invention]

The panel seal surface cleaning device according to the present invention includes a cleaning liquid supply pipe which is provided with a plurality of small holes penetrating the inside and outside on the circumferential surface and discharges cleaning liquid from these small holes, and a spongy shape which is fitted and attached to the outer circumference of the cleaning liquid supply pipe. It is equipped with a roller and a panel conveyor that holds the panel and positions the panel so that its sealing surface contacts the outer circumferential surface of the spongy roller and rotates the panel in its local direction, and the cleaning liquid discharged from the cleaning liquid supply pipe. A spongy roller containing .

[Embodiments of the invention]

Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

In the drawing, (c) is a cleaning tank with an open top, and the planar shape may be circular or square. (C) is a cleaning liquid supply pipe that passes through the side wall of the oak (251) and this tank (251).
1, and is fixed to the fil wall by a joint. This cleaning liquid supply pipe Q
As shown in the diagram, Q has a plurality of small holes (281) penetrating inside and outside on the surface located in the tank (C), and the cleaning liquid is discharged from these small holes (2). A cutoff root for cutting off the inside of the pipe is provided at the part corresponding to the center of the tank □□□ of this cleaning liquid supply pipe (c).Therefore, the left and right sides of the cleaning liquid supply pipe 4 are independent from each other, as shown by the arrow (a). As shown in , the cleaning liquid supplied from the outside is uniformly discharged from the small hole (2) without interfering with each other on the left and right sides in the tank.
It is fitted and attached to the outer periphery of the part where the small hole (to) is provided. Therefore, the cleaning liquid discharged from the small holes uniformly permeates into this spongy row 501). The inner diameter of this spongy roller C311 is made slightly larger than the outer diameter of the cleaning liquid supply pipe (E) so that the spongy roller C (1) can freely rotate around the outer circumference of the cleaning liquid supply pipe (4). A washer is attached to the cleaning liquid supply pipe 0, and together with the outer edge of the cutting root, restricts the cleaning in the axial direction of the spongy roller C1l+.

The panel (151) is held by the panel conveyor a8.

The panel conveyor α8 transports the panel (151) to its sealing surface σ
(2) is for transporting to the cleaning position where it comes into contact with the outer peripheral surface of the spongy row gyrus as shown in the figure. It also has the function of rotating this panel α9 in the circumferential direction indicated by the arrow (force).

In addition, the above 4? L1251 is planted so that it can be moved up and down as shown by the arrow (C1) using a lifting mechanism (to) using a cylinder or the like.In addition, the cleaning liquid is placed in the tank as shown by the arrow (d).
Connect the drain pipe shaft for discharging.

In the above configuration, the panel (151 is a panel conveyor (1
& is held and transported to the cleaning position shown. At this time, the tank (2) is at a lower position than the position shown in Figure 5 due to the cylinder field. When the panel (151) is confirmed to have been transported to the cleaning position using a position detection means, the cylinder 35
operates and raises the entire tank, and the spongy roller C31+
The outer peripheral surface of the panel σ9 is brought into contact with the sealing surface αeK of the panel σ9. In this case, since the upward stroke of the tank (c) differs depending on the size of the panel a51, the upward stroke corresponding to each size is set in advance, and the upward stroke is changed each time the size differs. In this case, regardless of the size, the sealing surface of the panel (151 is set so as to bite into the outer peripheral surface of the sealing surface (161 is the spongy roller C31) to some extent).

Here, the panel (151) is rotated in the outer circumferential direction indicated by the arrow (') by a panel conveyor (national mechanism), and the sealing surface α0 comes into contact with the outer circumferential surface of the spongy roller [311]. The spongy rollers 311 are indicated by arrows (11
Rotate in the direction shown in (1). At this time, of course, the cleaning liquid is discharged from the small hole (to) of the cleaning liquid supply pipe (c) and uniformly permeates the spongy roller GLI. Therefore, due to the rotation of the panel a9 and the accompanying rotation of the spongy roller c311, the sealing surface ff61 comes into frictional contact with the outer peripheral surface of the spongy roller C (It) impregnated with the cleaning liquid, and is sufficiently cleaned. If the sealing surface (161) digs into the outer peripheral surface of the spongy roller C311 to some extent, the outer and inner walls on both sides of the sealing surface a61 can also be cleaned.

When regularly cleaning or replacing the spongy roller C311,
This can be done by removing the joint C2η and the pusher Gz. Since the panel haze rotates, the length of the spongy rollers C311 combined in a straight line is equal to or greater than the diagonal length thereof.

In the above embodiment, the upward stroke of the cylinder 09 is changed depending on the panel size, but the upward stroke of the cylinder 09 is kept constant, and instead, each size is The holding height may be changed so that the sealing surface (Lf3) of each panel remains at a constant level.

In addition, although an example was shown in which two spongy rollers C (11) and two corresponding cleaning liquid supply pipes (C) were arranged in a straight line,
Two or more spongy rows 53D and cleaning liquid supply pipes may be provided. For example, two sets of spongy rollers c111 and cleaning liquid supply g (c) may be arranged in a cross-shape as shown in the figure (two linear sets).
1° In this case, an even number of the spongy rollers C31+ is preferable in order to bring the spongy rollers C31+ into even load contact with the seal rotation of the panel C151.

In order to operate with good cleaning efficiency, it is necessary to decide the number of cleaning devices depending on the cleaning liquid used and the speed FIC of the flow. Further, the cleaning liquid to be used is appropriately selected depending on the substance adhering to the sealing surface. Furthermore, the material of the main parts of the device and the axial strain equipment must be appropriately selected depending on the cleaning liquid used. Further, a flow rate control valve may be provided in the middle of the cleaning liquid supply pipe so that the flow rate of the cleaning liquid can be appropriately controlled. In this case, a more appropriate cleaning state can be obtained. Seal surface α of panel book being cleaned
e and spongy roller r31) are not only parallel to the floor as shown in the figure (but may also be arranged to form an appropriate angle with the floor depending on the situation of the installation process. For example, when cleaning If you want to instantly check the degree of cleaning or to clean more of the outer and inner walls, it is better to set the angle with the floor at 70° to 80° so that the cleaning liquid can easily accumulate.

〔Effect of the invention〕

As described above, according to the present invention, substances that have adhered to the panel seal surface are forcibly removed and cleaned by sufficient cleaning, so that the panel seal surface becomes contaminated, which causes poor welding in the frit sealing process. In addition, Sara K produces excellent effects such as reducing defects in the process of providing black stripes and phosphor stripes.

[Brief explanation of drawings]

Figure 1 and Figure 2 are configuration diagrams showing conventional devices, respectively.
The opposite figure is a sectional view showing an embodiment of the panel seal surface cleaning device according to the present invention, and the opposite figure is an enlarged sectional view showing the main part in the opposite figure. (151ψ・Panel, (1e・Seal surface, (4)Q・
Cleaning liquid supply pipe, ■... Small hole, C311... Spongy roller.

Claims (1)

[Claims] 11+ A cleaning liquid supply pipe having a plurality of small holes penetrating the inside and outside on the circumferential surface and discharging a cleaning liquid from these small holes, and a spongy roller fitted and attached to the outer periphery of the cleaning liquid supply pipe. A panel seal surface cleaning device comprising: a panel conveyor that holds a panel and positions the panel so that its seal surface is in contact with the outer peripheral surface of the spongy roller, and rotates the panel in its circumferential direction; (2) The panel seal surface cleaning device according to claim 1, wherein the cleaning liquid supply pipe and the spongy roller are each independent of each other. (3) The cleaning liquid supply pipe is located at the center of the panel. FIJA fang (1), characterized in that it is closed at a position corresponding to the closed part, and independent spongy rollers are fitted and attached to the outer periphery of both sides of the closed part, respectively. The panel seal surface cleaning device described in Paragraph 2. +4] The combined length of the plurality of spongy rollers combined to form a straight line is set to a length equal to or longer than the diagonal length of the panel, and The panel seal surface cleaning device according to claim 2 or claim 5, characterized in that each spongy roller is rotatably fitted and attached to a corresponding cleaning liquid supply pipe. (5) Sponge A patent claim characterized in that the outer circumferential surface of the shaped roller is set to be in contact with the panel seal surface at a substantially right angle, and the axial direction thereof is set to form an angle from parallel to the floor surface to a right angle. The panel seal surface cleaning device according to any one of Items 1 to 1.