JP2003136025A - Washing method and washing apparatus for plate-like body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means for preventing stagnation of a washing solution at the time of shower washing of a glass surface in a method for washing a rectangular type glass plate with a large surface area, which is a glass body of such as glass for a liquid crystal display. SOLUTION: The washing method and the washing apparatus satisfy one or all of the following: employing shower arrangement so as to shower a washing solution in a V-form to glass by forming showering pipes into V-shapes, using showering pipes whose angles to the center line of the width of the glass are set to be 10 to 50 degrees, and setting the showering angle so as to keep the entering angle of the showering center to the horizontal surface of the glass within 85 degrees.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a plate-like body such as liquid crystal display glass, and more particularly to a method for cleaning a rectangular large-area plate-like body and a cleaning apparatus used therefor.

[0002]

2. Description of the Related Art FIG. 4 is a schematic view of a shower ring portion for cleaning a plate-like body such as glass for liquid crystal display. The shower ring section is generally as follows, for example. That is, shower showers are attached to PVC pipes or metal pipes such as stainless steel at regular intervals, and shower pipes are installed at a right angle to the plate-like body traveling direction in a straight line under the shower nozzles. I do.

In this case, the cleaning liquid is ejected from the shower nozzle in a fan shape or in a circular shape so that the cleaning liquid ejected from the shower nozzle is uniformly distributed over the entire surface of the plate. There is.

However, with the recent increase in the size of glass, the area of the plate-like body such as glass has increased and the distance from the center of the plate-like body to the end face of the plate-like body has become longer. The cleaning liquid in the central portion is not discharged promptly from the end face of the plate-like body and stays there. Therefore, the cleaning quality of the plate-like body surface varies, and uniform cleaning is impossible.

FIG. 5 is a view showing a shower cleaning system in which the cleaning solution is retained on the surface of the plate-like body by inclining the plate-like body at a certain angle to constantly drop the cleaning solution on the lower end surface side of the plate-like body. is there. In this method, the device must be manufactured with a certain inclination, and a mechanism for inclining the plate-like body is required, so that the device cannot avoid having a complicated structure.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a means for preventing the cleaning liquid from staying on the surface of a plate-like body for shower cleaning as described above.

[0007]

DISCLOSURE OF THE INVENTION The present invention relates to a method for cleaning a plate-like body such as a glass for liquid crystal display, particularly a rectangular large-area plate-like body, and a shower nozzle for shower-cleaning the surface of the plate-like body, In the invention according to claim 1, in the method for cleaning a plate-shaped body that advances in the flow direction, the cleaning liquid is sprayed by a diffusion type shower arranged in a “V” shape and parallel to the plate-shaped body in the flow direction. The present invention provides a method for cleaning a plate-shaped body, which comprises:

According to a second aspect of the present invention, in the method for cleaning a plate-shaped body which advances in the flow direction, a diffusion type shower having an angle with respect to the flow width direction of 10 to 50 degrees and arranged parallel to the plate-shaped body. The method for cleaning a plate-like body is characterized in that the cleaning solution is sprayed.

According to a third aspect of the present invention, in a method of cleaning a plate-shaped body that advances in the flow direction, the plate is a diffusion type shower arranged parallel to the plate-shaped body, and the spreading center direction is a backward direction plate. It is intended to provide a method for cleaning a plate-shaped body, which comprises spraying a cleaning liquid in a direction where an angle with the surface of the body is within 85 degrees.

According to a fourth aspect of the present invention, there is provided a plate-like body cleaning method characterized by satisfying all the features of the first, second and third aspects.

According to a fifth aspect of the present invention, there is provided a cleaning device comprising a diffusion type shower arranged in a "V" shape in the flow direction of the plate-like member and arranged in parallel with the plate-like member. To do.

According to a sixth aspect of the present invention, there is provided a cleaning device characterized in that the plate-shaped body has an angle with respect to the flow width direction of 10 to 50 degrees and is composed of a diffusion type shower arranged parallel to the plate-shaped body. It is provided.

According to a seventh aspect of the present invention, there is provided a diffusion type shower arranged in parallel with the plate-like body, and the spraying direction is such that the direction of the center of dispersion is the backward direction and the angle with the plane of the plate-like body is within 85 degrees. A cleaning device characterized by having.

The invention according to claim 8 provides a cleaning device characterized by satisfying all the characteristics of claims 5, 6 and 7.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the following method is used in order to solve the above-mentioned problem of retention of the cleaning liquid in the plane of the plate.

That is, in the cleaning method according to claim 1 and the cleaning device according to claim 5, as shown in the example of FIG. 1, the shower pipe is formed into a plate-like body by forming the shower pipe into a “V” shape. The cleaning liquid is V-shaped with respect to the surface and escapes the cleaning liquid to the end face side of the plate-like body, thereby preventing retention in the plate-like body surface. By the way, the diffusion of the shower shows nozzles which are sprayed at 60 to 80 degrees with respect to the spray center direction. Further, if the arrangement of the nozzles is a prescribed shape, it is not necessary for the pipe to follow the arrangement of the nozzles, but generally it is easier to follow the arrangement of the nozzles.

In the cleaning method according to claim 2 and the cleaning apparatus according to claim 6, as shown in the example of FIG.
The flow of the cleaning liquid to the end face side of the plate-shaped body by setting the angle of the V-shape within the range of 10 to 50 degrees with respect to the flow direction of the plate-shaped body of the shower pipe depending on the plate-shaped body area, the cleaning device, the flow rate, and the nozzle shape. The direction can be optimized, and the staying prevention becomes more effective.

That is, in the cleaning method according to claim 3 and the cleaning device according to claim 7, as shown in the example of FIG. 3, the approach angle of the cleaning liquid discharged from the shower nozzle with respect to the horizontal surface of the plate-shaped body is 85. By setting the flow rate within the range, the drainage effect and the cleaning effect can be improved by increasing the flow velocity of the cleaning liquid on the surface of the plate-shaped body.

That is, in the cleaning method according to the fourth aspect and the cleaning device according to the eighth aspect, by combining all of the above, it becomes possible to prevent the retention of the cleaning liquid more effectively and uniformly clean the surface of the plate-shaped body. It is possible.

[0020]

[Example] To clean a glass substrate having a width direction of 960 mm and a flow direction of 1100 mm, "V" is applied toward the flow direction.
The nozzle was arranged in the shape. In this case, the V shape was arranged such that the angle with respect to the flow width direction was 25 degrees and the nozzle intervals were 70 mm. All of these nozzles are arranged on the upper side with a gap of 120 mm from the plate-like body, and the spraying center direction of each of the nozzles is in the backward direction and the direction of the angle with the plate-like body surface is 70 degrees. Is set so that the cleaning liquid is sprayed on a substantially elliptical region having a radius of 70 mm on the surface of the plate-shaped body. Each nozzle is installed on the water pipe of one V-shaped pipe, and each nozzle is adjusted so as to spray evenly.

When a cleaning device having such a nozzle arrangement was used and pure water was used as a cleaning liquid while flowing the glass substrate at a speed of 2.0 mm / s, the cleaning was performed at a total flow rate of 160 mm ³ / s. I was able to wash it. As a result, when the cleaning result was visually evaluated at each point on the surface of the glass substrate, no significant difference was observed between the points.

[0022]

According to the means of claim 1 or 5, that is, the method according to the "V" shape of the shower pipe, after the cleaning liquid is always directed to the left and right end faces in the traveling direction of the plate-shaped body, the surface of the plate-shaped body is cleaned, Since the water is quickly drained to the end face side of the plate-like body, there is an effect that retention on the plate-like body surface is reduced.

In the means of claim 2 or 6, that is, in the method of setting the angle of the shower pipe with respect to the plate width river center line, the target plate area, the cleaning device, the flow rate,
By setting the optimum angle according to the nozzle shape, the drainage effect to the end face side of the plate-shaped body is enhanced and retention is more effective.

According to the means of claim 3 or 7, that is, the method in which the cleaning liquid discharged from the shower nozzle enters the horizontal surface of the plate-shaped body at an angle, the cleaning liquid having reached the surface of the plate-shaped body is provided with a flow velocity to enhance the cleaning effect. At the same time, accelerating the movement of the cleaning liquid to the end of the plate-like body effectively prevents the retention.

By the means of claim 4 or 8, that is, the combined use of the above three methods, the effect of preventing stagnation is further enhanced, and the surface of the plate-like body can be uniformly washed.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a cleaning method and a cleaning device when a cleaning liquid is sprayed by a diffusion type shower arranged in a “V” shape in the flow direction and parallel to a plate-like body in the present invention. is there.

FIG. 2 is an angle of 10 to 50 with respect to the flow width direction of the present invention.
FIG. 3 is a plan view showing an example of a cleaning method and a cleaning device when a cleaning liquid is sprayed by a diffusion type shower arranged parallel to the plate body.

FIG. 3 is a diagram illustrating a diffusion type shower of the present invention arranged in parallel with a plate-like body, and spraying a cleaning liquid in a direction in which the center of the spraying direction is a backward direction and an angle with the plate-like body surface is within 85 degrees. FIG. 3 is a side view showing an example of one nozzle of the cleaning method and the cleaning device in the case of performing the above.

FIG. 4 is a plan view showing an example of a conventional cleaning method and cleaning device.

FIG. 5 is a side view showing an example of a cleaning method and a cleaning device which are prior arts close to the present application.

[Explanation of symbols]

1 shower nozzle 2 shower piping 3 plates 4 plate-like end face 5 showers 6 Flow direction of cleaning liquid on plate 7 Plate transport direction 8 Washing liquid retention area 10 plate horizontal surface θ1 shower piping angle θ2 shower angle θ3 Inclination angle of plate

Claims (8)

[Claims] 1. A method for cleaning a plate-shaped body that advances in the flow direction, characterized in that the cleaning liquid is sprayed in a diffusion type shower arranged in a "V" shape and parallel to the plate-shaped body in the flow direction. A method for cleaning a plate-like body. 2. A method of cleaning a plate-shaped body which advances in the flow direction, wherein the cleaning liquid is sprayed by a diffusion type shower arranged at an angle of 10 to 50 degrees with respect to the flow width direction and arranged in parallel with the plate-shaped body. A method for cleaning a plate-shaped body, comprising: 3. A method for cleaning a plate-shaped body that advances in the flow direction, wherein a diffusion-type shower arranged parallel to the plate-shaped body is used, and the direction of the center of spraying is backward and the angle with the plate-shaped body is 85. A method for cleaning a plate-like body, which comprises spraying a cleaning liquid in a direction within a degree. 4. A method for cleaning a plate-like body, which satisfies all the features of claims 1, 2 and 3. 5. A "V" shape in the flow direction of the plate-like body,
A cleaning device comprising a diffusion type shower arranged parallel to the plate-like body. 6. The angle of the plate-shaped body with respect to the flow width direction is 10 to 5.
A cleaning device comprising a diffusion type shower arranged at 0 degrees and parallel to a plate-like body. 7. A washing method comprising a diffusion type shower arranged in parallel with a plate-like body, and having a spraying direction in which a direction of a spraying center is a retreating direction and an angle with a plate-like body surface is within 85 degrees. apparatus. 8. A cleaning device which satisfies all the features of claims 5, 6 and 7.