Horizontal overflow forming device for ultra-thin sheet glass

Abstract

The invention relates to a horizontal overflow forming device for ultra-thin sheet glass. The horizontal overflow forming device for the ultra-thin sheet glass comprises a base body (1) and retaining walls (7), wherein two guide inclined planes (1c) arranged mutually and symmetrically are arranged on the lower side of the seat body (1), the lower ends of the two guide inclined planes (1c) are mutually connected and form a shaping edge (1d), an overflow groove (1b) is formed in the top end of the seat body, and overflow inclined planes (1a) are arranged on the two sides of the overflow groove. The horizontal overflow forming device is characterized in that a guide device (3) is arranged over the base body, a molten glass injection port (4) is formed in the upper side of the guide device, a row of molten glass leading-out ports (6) communicated with the molten glass injection port is uniformly distributed in the lower side of the guide device, the axis of each molten glass leading-out port is vertically intersected with the center axis of the overflow groove (1b). The horizontal overflow forming device has the advantages that the horizontal overflow forming device is simple in structure and high in stability, a molten glass injection mode is changed, molten glass is evenly distributed through a group of inverted-V-shaped flow channels communicated step by step so that the liquid level heights of the molten glass at all positions in the overflow groove are equal.

Description

technical field [0001] The invention relates to production equipment for manufacturing ultra-thin flat glass, in particular to a horizontal overflow former for producing ultra-thin flat glass. Background technique [0002] At present, in the field of flat glass, especially ultra-thin flat glass manufacturing, the main forming processes include overflow down-draw method, slot down-draw method, float method, etc. In the overflow down-draw method and slot-hole down-draw forming process, a former is used to draw high-temperature molten glass into a flat glass plate. The existing forming device includes a base made of refractory material, an overflow groove is provided at the top of the base, overflow slopes are also provided on both sides of the overflow groove at the top of the base, and a glass liquid injection port is provided at one end of the base. When the molten glass flows into the overflow tank from the molten glass inlet, the molten glass flows from one end of the ove...

AI Technical Summary

Problems solved by technology

The existing forming device includes a base made of refractory material, an overflow groove is provided at the top of the base, overflow slopes are also provided on both sides of the overflow groove at the top of the base, and a glass liquid injection port is provided at one end of the base. When the molten glass flows into the overflow tank from the molten glass inlet, the molten glass flows from one end of the overflow tank to the other end of the overflow tank. In order to ensure that the overflow volume of each part of the forming machine is consistent, the thickness of the plate glass formed by the overflow is consistent. , in addition to strictly controlling the structural size of the forming device, it is also necessary to control the inclination angle of the overflow surface, the viscosity of the glass liquid, the temperature of the glass liquid, the molding speed, the injection speed of the glass liquid, the width of the glass plate, the thickness of the glass plate, the composition of the raw materials, and the environment. Repeated debugging of parameters such as temperature is difficult and the cycle is long, which is not conducive to reducing production costs

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