CN-117798127-B - On-line cleaning equipment for TFT glass ribbon

CN117798127BCN 117798127 BCN117798127 BCN 117798127BCN-117798127-B

Abstract

The invention discloses on-line cleaning equipment for a TFT glass belt, which relates to the technical field of TFT glass production and comprises a water tank, an ultrasonic generator, a heating device and a conveying roller set, wherein the water tank is arranged at the front end of a defect detection system, the ultrasonic generator forms ultrasonic waves in the water tank, the heating device is used for heating water in the water tank, when the glass belt moves to the water tank along with the conveying roller set, the glass belt sags along with the lowering of the height of a roller table of the lowering roller set under the action of gravity as the height of the roller table is lowered, impurities possibly attached to the glass belt can be effectively removed after ultrasonic cleaning until the glass belt is immersed below the liquid level of cleaning liquid, when the glass belt is separated from the cleaning liquid, an air knife is formed by air blast of a fan, and the attachments possibly attached to the glass belt are blown off the cleaning liquid, so that the attachments are promoted to return to the cleaning liquid, and the cleaning effect of the glass belt is effectively ensured.

Inventors

ZHANG XINYUAN
ZHU MINGLIU
LIU CHANGYI
ZHAO WEI
YANG XUE

Assignees

蚌埠中光电科技有限公司
中国建材集团有限公司

Dates

Publication Date: 20260505
Application Date: 20240221

Claims (6)

1. An in-line cleaning apparatus for TFT glass ribbon, comprising: the water tank (1) is arranged at the front end of the defect detection system, and cleaning liquid is stored in the water tank (1); An ultrasonic generator (2), the ultrasonic generator (2) being configured to generate ultrasonic waves within the water tank (1); The heating device is used for heating the cleaning liquid in the water tank (1) to ensure that the cleaning liquid is maintained in a specified temperature range so as to prevent breakage of the glass ribbon caused by too low water temperature; The conveying roller set is divided into a descending roller set (4) and a lifting roller set (5) at the part of the water tank (1), the lifting roller set (5) and the descending roller set (4) are symmetrically arranged, the heights of a plurality of roller tables of the descending roller set (4) are sequentially reduced, the height positions of a plurality of roller tables of the lifting roller set (5) are sequentially increased, and the top points of the roller tables with the lowest heights in the descending roller set (4) and the lifting roller set (5) are positioned below the liquid level of the cleaning liquid; The device comprises a descending roller set (4) and a lifting roller set (5), wherein the number of the descending roller set (4) and the number of the lifting roller set (5) are at least three, the difference between the height of a roller table with the highest height and the height of a roller table with the lowest height in the descending roller set (4) is 100mm, fans (8) are respectively arranged on the upper side and the lower side of a glass belt, an air outlet of each fan (8) faces to the position where the glass belt is separated from cleaning liquid, the air flow direction is opposite to the moving direction of the glass belt, and the air flow direction is tangential to the arc track where the glass belt is located at the position where the air flow contacts the glass belt.
2. The online cleaning device for the TFT glass ribbon according to claim 1, wherein a water injection hole (6) is formed in the side face of the water tank (1), a drain hole (7) is formed in the bottom of the water tank (1), and the water injection hole (6) is located above the drain hole (7).
3. An on-line cleaning apparatus for TFT glass ribbon according to claim 2, wherein the outlet of the drain hole (7) is connected to a water treatment mechanism (3), the water treatment mechanism (3) being for purifying water in the water tank (1).
4. An on-line cleaning apparatus for TFT glass ribbon as defined in claim 3, wherein a conductivity sensor is provided in the water tank (1), the conductivity sensor is used for collecting conductivity information of the cleaning liquid in the water tank (1) and transmitting the collected conductivity information to the controller, and when the conductivity in the water tank (1) reaches a threshold value, the controller gives an instruction, and the water treatment mechanism (3) starts the cleaning liquid in the water tank (1) to perform the cleaning treatment.
5. An in-line cleaning apparatus for TFT glass ribbon as defined in claim 4, wherein the width of the water tank (1) is larger than the width of the glass ribbon, the direction of the air outlet is inclined in the lateral direction with respect to the moving direction of the glass ribbon, and the inclined directions of the air outlets on the upper and lower sides of the glass ribbon are opposite.
6. An in-line cleaning apparatus for TFT glass ribbon as in any one of claims 1 to 5 wherein the cleaning liquid is clear water.

Description

On-line cleaning equipment for TFT glass ribbon Technical Field The invention relates to the technical field of TFT glass production, in particular to online cleaning equipment for a TFT glass belt. Background TFT glass is one of the important components used in the manufacture of Liquid Crystal Displays (LCDs). It consists of a glass substrate and an array of Thin Film Transistors (TFTs) thereon. The main function of TFT glass is to control the arrangement of liquid crystal molecules, thereby determining the display effect of LCD. The manufacturing process of TFT glass is very complex and requires multiple process steps. First, it is necessary to deposit an ITO thin film as a conductive layer on a glass substrate, and then form a TFT array through process steps such as photolithography and etching. In this process, high precision equipment and process control techniques are required to ensure the quality and performance of the TFT array. The quality and performance of TFT glass has a critical impact on the display effect of LCDs. If the TFT glass has defects or poor performance, the problems of uneven brightness, color distortion, slow response speed and the like of the LCD are caused. Therefore, in the manufacture of LCDs, strict quality control and inspection of TFT glass is required to ensure that its quality and performance meet requirements. In the TFT glass production process, in order to effectively detect and monitor the processing quality, a plate defect automatic detection system is added in the existing production line and is used for detecting the plate defect of the TFT glass. However, in the actual production process, the applicant finds that the existing detection system has more misjudgment conditions and lower detection accuracy, and the improvement of the detection accuracy of the detection system can possibly lead to the machine-blocking of the detection system program. Disclosure of Invention The invention solves the technical problems that the existing detection system has more misjudgment conditions and lower detection accuracy, and the detection accuracy of the detection system is improved at the same time, so that the machine blocking of the detection system program can be possibly caused. The aim of the invention can be achieved by the following technical scheme: An in-line cleaning apparatus for TFT glass ribbon comprising: the water tank is arranged at the front end of the defect detection system, and cleaning liquid is stored in the water tank An ultrasonic generator for generating ultrasonic waves in the water tank; the heating device is used for heating the cleaning liquid in the water tank and ensuring that the cleaning liquid is maintained in a specified temperature range; The conveying roller set is characterized in that the part of the conveying roller set, which is located in the water tank area, is divided into a descending roller set and an ascending roller set, the ascending roller set and the descending roller set are symmetrically arranged, the heights of a plurality of roller tables of the descending roller set are sequentially reduced, the height positions of a plurality of roller tables of the ascending roller set are sequentially increased, and the top point of the roller table with the lowest height in the descending roller set and the ascending roller set is located below the liquid level of the cleaning liquid. In one embodiment of the present invention, the number of the descending roller set and the ascending roller set is at least three. In one embodiment of the invention, the height of the highest roller way and the height of the lowest roller way in the descending roller group are different by 100mm. In one scheme of the invention, a water injection hole is formed in the side face of the water tank, a drain hole is formed in the bottom of the water tank, and the water injection hole is located above the drain hole. In one embodiment of the invention, the outlet of the drain hole is connected with a water treatment mechanism for purifying water in the water tank. In one scheme of the invention, a conductivity sensor is arranged in the water tank and is used for collecting conductivity information of cleaning liquid in the water tank and transmitting the conductivity information to the controller, when the conductivity in the water tank reaches a threshold value, the controller sends out an instruction, and the water treatment mechanism starts the cleaning liquid in the water tank to carry out purification treatment. In the scheme of the invention, fans are respectively arranged on the upper side and the lower side of the glass belt, the air outlets of the fans face to the position where the glass belt is separated from the cleaning liquid, and the air flow direction is opposite to the moving direction of the glass belt. In one aspect of the invention, the direction of the wind flow is tangential to the arc path of the ribbon at the point where the wind flo