Overflow brick groove bottom curve design optimization method

Abstract

The invention belongs to the field of glass substrate manufacturing, and discloses an overflow brick groove bottom curve design optimization method which comprises the following steps: S1, obtaining astandard lead-out amount of an overflow brick according to design parameters of the overflow brick; S2, obtaining an initial overflow brick groove bottom curve according to the standard lead-out amount of the overflow brick; S3, performing linear correction on the initial overflow brick groove bottom curve according to the length of the overflow brick shunting block to obtain an overflow brick groove bottom curve; s4, according to the overflow brick groove bottom curve and the overflow brick design parameters, obtaining the thickness range of the formed glass substrate through overflow simulation; s5, when the thickness range of the formed glass substrate is smaller than or equal to a preset threshold value, adopting an overflow brick groove bottom curve and overflow brick design parameters for overflow brick machining; and when the thickness range of the formed glass substrate is greater than the preset threshold value, adjusting the design parameters of the overflow brick and repeating the steps S1 to S4. The problem of fluctuation of the forming thickness of the glass substrate is effectively solved, and the production allowance is increased in design, so that the forming thickness of the glass substrate can meet the requirements.

Description

technical field [0001] The invention belongs to the field of glass substrate manufacturing and relates to a method for optimizing the curve design of overflow brick groove bottoms. Background technique [0002] The glass substrates used in the production of flat panel displays such as TFT-LCD (Thin Film Transistor Display) and PDP (Plasma Display Panel) are manufactured by overflow down-drawing. In the forming process, molten glass melted by a glass melting furnace is supplied to Melt overflow down-draw molding device to manufacture. [0003] Display manufacturing requires larger and larger glass substrates to improve production efficiency and reduce costs, but the production of larger glass substrates is more difficult, and the quality control of glass substrates is more complicated. The overflow brick is one of the core components of the glass substrate manufacturing and molding device. Among them, the control of the thickness uniformity of the glass substrate is one of t...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantage that the thickness distribution of the glass substrate produced by the overflow down-draw method in the above-mentioned prior art often does not meet the requirements, and to provide a method for optimizing the design of the groove bottom curve of the overflow brick

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