A quenching device for a glass tempering production line

Abstract

The invention discloses a quenching device for a glass tempering production line. The quenching device includes a frame, a cooling mechanism and a lifting mechanism; the cooling mechanism includes an upper cooling roller table, a lower cooling roller table, a driving mechanism and a cooling liquid circulation system; The lifting mechanism adjusts the gap between the upper cooling roller table and the lower cooling roller table by lifting the upper cooling roller table; the driving mechanism is used to rotate the upper and lower cooling roller tables so as to transport the heated Cold glass plate; when the glass plate to be quenched passes between the upper and lower cooling roller tables, the upper and lower cooling roller tables contact the glass plate to be quenched, and rely on the gravity of the upper cooling roller table to The cold glass plate exerts a certain pressure, thereby realizing the quenching treatment on the glass plate to be quenched. The invention has a simple structure and is practical, can effectively realize the quenching treatment of the ultra-thin glass plate, improves the cooling intensity in the quenching process, has a more uniform cooling effect, and reduces the stress deformation of the ultra-thin glass.

Description

technical field [0001] The invention relates to the production of tempered glass, in particular to a quenching device for a glass tempering production line. Background technique [0002] In the prior art, physically strengthened or tempered glass sheets are mainly produced by an air quenching and tempering process in which the glass sheet is heated to just below its softening point (eg 650°C) and then cooled with air The jet is sprayed onto the surface of the heated glass plate to rapidly cool or quench the surface of the glass plate, thereby forming compressive stress on the surface and forming tensile stress inside, that is, tempering of the glass. Another known quenching method is the spray quenching process, which uses a spray of water mist on the heated glass sheet for cooling. [0003] However, the above two conventional cooling methods have great limitations when tempering thin glass plates with a thickness of no more than 3.0mm and ultra-thin glass plates. Because ...

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Problems solved by technology

[0003] However, the above two conventional cooling methods have great limitations when tempering thin glass plates with a thickness of no more than 3.0mm and ultra-thin glass plates.

Because the glass plate is very thin, the temperature difference between its center and surface is very small when cooling, so it is difficult to achieve the ideal stress gradient

At present, the common practice is to greatly increase the power or number of fans, and increase the cooling rate of the glass by increasing the wind pressure. This not only significantly increases the energy consumption cost of the production process, but also easily leads to serious wind on the surface of the glass plate. spots, and even deformation of the glass plate

Furthermore, the existing blowing cooling and spray cooling are difficult to ensure the uniformity of cooling, which will also have an adverse effect on the quality of tempered glass

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