Crawler-type sheet glass extrusion moulding method
An extrusion molding, crawler-type technology, applied in glass molding, glass calendering, glass manufacturing equipment and other directions, can solve the problems of difficult control, high cost of sheet glass products, large investment cost, etc.
Inactive Publication Date: 2012-05-16
王建伟
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However, each of the above-mentioned methods has various disadvantages. The common disadvantage is that not only the molding quality of the thin plate glass depends on the parameters that are difficult to be controlled precisely, such as the melting state of the glass, the molding temperature, the traction speed, and the air flow, it is very difficult to control. The investment cost is too high, hundreds of millions or even billions of investment, and the use and maintenance cost is also very high, and the cost of its thin plate glass products is also very high.
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[0011] The high-temperature molten glass ribbon 2 flowing out of the glass outlet 1 of the melting furnace is rolled by a pair of pre-pressing rollers 3 below it to become a glass ribbon 4 with a thickness slightly larger than the thickness of the final thin plate glass. Manually ( Or use a mechanical method to guide it to the right in the figure, so that when it goes down to the forming surface block placed on the small platform where the lower crawler protrudes from the end of the upper crawler, the forming surface that moves to the right The effect of block surface friction moves along with it to the middle seam between the molding surface block 12 that two crawler belts are placed up and down. When the end of the glass liquid belt 4 enters the middle seam, under the action of the crawler support compactor 7, the molding surface block 12 between the surfaces 5 of the two crawlers immediately squeezes the glass liquid belt 4, forcing the uncur...
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A crawler-type sheet glass extrusion moulding method belongs to the fields of liquid-crystal display panel substrate and panel moulding. Two synchronously operated crawler belts are arranged under a high temperature glass liquid discharge hole, and a glass liquid belt is extruded between the crawler belts. The glass liquid belt is extruded by the crawler belts, gradually cooled and annealed to form a sheet glass with a thickness the same as that of an extruding gap of the crawler belts, as shown. People can easily adjust and fix the gap between the two crawler belts, so as to produce a sheet glass product with high precision of thickness and flatness. Surfaces, contacting the glass liquid, of the crawler belts to extrude glass are treated with polishing treatment or surface film coating treatment by precious metal like platinum with excellent high temperature performance, so that after extruding, fixing, annealing and cooling on the glass liquid, the sheet glass reaches precision of a minute surface. The moulding method is for a display screen of a mobile phone, a vehicle-mounted GPS (Global Position System), a PDA (Personal Digital Assistant), a learning machine, a laptop, for a liquid-crystal display of a desktop computer and for a substrate glass of a display screen of a liquid crystal television set.
Description
technical field [0001] The crawler-type sheet glass extrusion molding method belongs to the field of liquid crystal display panel glass substrate and panel molding. It is a forming technology for display substrate glass of mobile phone display, car GPS system display, PDA display, learning machine display, notebook computer display, desktop computer LCD display, LCD TV display and so on. Background technique [0002] For a long time, the production and molding methods of liquid crystal display glass substrates have been relatively mature, including float process, overflow down-draw process, notch down-draw process and other technical methods. However, each of the above-mentioned methods has various disadvantages. The common disadvantage is that not only the molding quality of the thin plate glass depends on the parameters that are difficult to be controlled precisely, such as the melting state of the glass, the molding temperature, the traction speed, and the air flow, it is...
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IPC IPC(8): C03B13/00
Inventor 王建伟
Owner 王建伟