Glass, glass forming method, pressing device and calender

Abstract

The invention relates to glass, a glass forming method, a pressing device and a calender. The glass is prepared by a calendaring molding method; the glass is prepared from the following raw materials: SiO2, Li2O, Na2O, CaO, MgO, Al2O3 and TiO2+ZrO2; the pressing device comprises two pressing mechanisms which are oppositely arranged, each pressing mechanism comprises a base, a cross beam, a pressing rod, a stand column and a driving mechanism, the stand columns and the driving mechanisms are installed on the bases, the first ends of the pressing rods, the ends, away from the bases, of the stand columns and the ends, away from the bases, of the driving mechanisms are all pivoted to the cross beams, and the stand columns are located between the pressing rods and the driving mechanisms; the calender comprises the pressing mechanism. The glass provided by the invention has relatively good performance and relatively high mechanical strength.

Description

technical field [0001] The application relates to the field of glass molding, in particular to a glass, a glass molding method, a pressing device and a calender. Background technique [0002] The appearance protective glass and window protective glass of electronic products generally need to have high strength, wear resistance, scratch resistance, drop resistance, high optical clarity, and sensitive and accurate touch response. [0003] The production of the existing protective glass for the appearance of electronic products and the protective glass for windows can be divided into float forming method (referred to as float method), overflow down-drawing method (referred to as overflow method), and secondary drawing method according to different molding processes. method, slit method and secondary polishing method. Among them, the float forming method and the overflow down-draw method are the two mainstreams. In order to improve the strength and hardness of the glass surfac...

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Problems solved by technology

[0014] Therefore, the disadvantages of the above-mentioned calendering unit structure mainly include two points. The first point is that the operators need to pay a lot of physical labor, and the operators are easily radiated by the heat of the high-temperature glass liquid in the open area in front of the calender rolls, making it difficult for employees to operate. ;The second point is to manually adjust the pressure applied to the main roller on the calender. Since the force applied manually is too small (generally less than 28000N), it can only meet some thick conventional glass (≥2.5mm) production, but unable to meet the production of thinner glass (<2.5mm)

[0015] The conventional thickness of current glass is relatively thin, and its manufacturing methods are mainly float forming method and overflow down-drawing method. The glass produced by the above two methods has poor performance and low mechanical strength; The calender cannot press thin glass, which will also lead to poor performance and low mechanical strength of the produced glass

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