Device for manufacturing glass plate

Abstract

The invention provides a device for manufacturing a glass plate with uniform thickness. The device for manufacturing the glass plate comprises a discharge pipe, a forming device, baffle plates and a limiting mechanism, wherein an overflow groove is arranged at the top of the forming device; the overflow groove is communicated with the discharge pipe; the baffle plates are arranged at both sides of the length direction of the side surface of the forming device; the limiting mechanism is arranged below the forming device; thinning devices which enable the width of a glass tape to be same and the thickness of the glass plate to be reduced are arranged at the bottoms of the baffle plates. The device provided by the invention has the advantages that the glass tape forms obvious thickness difference when entering the thinning devices and leaving from the thinning devices and the width of the glass tape is unchanged in such a way that the thinning devices are arranged at both sides of the bottom of the forming device, thereby being favorable for reducing the shrinkage of the plate width of the glass tape in a thinning process and increasing the width of the glass plate formed after the glass tape is cooled. The device provided by the invention is especially suitable for producing glass plates with thicknesses less than 1.0 mm and also especially suitable for producing ultrathin glass plates with thicknesses less than 0.5 mm.

Description

technical field [0001] The invention relates to a manufacturing device of a glass plate, in particular to a device for manufacturing an ultra-thin glass plate by a down-draw method. Background technique [0002] At present, in the process of producing glass plates by the down-draw method, the overflow down-draw method and the slot down-draw method are the most representative. The overflow down-draw method means that the molten glass is transported to the forming device with a wedge-shaped cross-section through the discharge pipe, and the molten glass overflows from both sides of the groove of the forming device, passes through the top of the forming device, and then passes The side wall surface flows down, and the glass ribbon is fused together at the place where the two side walls meet at the bottom of the forming device, and finally the glass plate is formed; the slit pull-down method refers to the molten glass being transported through the discharge pipe to the glass with...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned reheating and secondary thinning method has the following risks: 1. When the glass plate is heated again, the lateral temperature difference of the glass plate is required to be very high, otherwise the glass plate will be unevenly thinned; 2. The glass plate is thinned twice. May negatively affect glass sheet warpage, surface flatness, surface quality

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