Through type glass tempering furnace capable of effectively weakening tempering stress patterns

Abstract

The invention discloses a through type glass tempering furnace capable of effectively weakening tempering stress patterns. The through type glass tempering furnace comprises a heating furnace, a scanning type tempering device and a cooling device which are sequentially arranged, wherein the scanning type tempering device is used for carrying out once-through type cooling on glass from the heatingfurnace, and the cooling device is used for carrying out reciprocating type cooling on the glass from the scanning type tempering device. In a tempering process of the tempered glass, the key is initial few seconds when tempering is formed, the scanning type tempering device is arranged between the cooling device and the heating furnace, and the once-through type cooling can be carried out on theglass from the heating furnace, so that defects in background art are overcome, and the situation that nonuniform heat dissipation is produced due to pause in the tempering process of the glass is eliminated; meanwhile, key T-second tempering is carried out, so that cooling efficiency is completely consistent from the beginning to the end, and the formation of the stress patterns of the tempered glass is effectively reduced.

Description

technical field [0001] The invention relates to tempered glass production equipment, in particular to a through-type glass tempering furnace capable of effectively weakening tempering stress spots. Background technique [0002] When tempered glass is broken, its fragments have rounded obtuse angles, no sharp edges and corners, and are not easy to hurt people. Therefore, tempered glass is widely used as doors and windows of automobiles, trains, ships, and buildings, and has a wide range of uses. The patent document with the publication number CN204281559U discloses a glass tempering furnace. The tempering glass processing flow is as follows: the glass is first heated in the heating furnace, then quickly removed from the heating furnace, and cooled by high-speed blowing. [0003] Such as figure 1 and 2 The existing glass tempering furnace shown includes a loading table 1, a heating furnace 2, a cooling device 3, and an unloading table 4 arranged in sequence. The glass 7 is h...

AI Technical Summary

Problems solved by technology

[0004] With this structural form of the existing tempered glass production equipment, the processed glass is prone to form stress spots, and the causes of stress spots are:

[0005] 1. In the first few seconds of the most critical formation of tempering, the conveying roller stops rotating (there will be a pause when the direction of rotation is switched), and then repeatedly stops at the same position. The cold glass cools slowly, resulting in uneven cooling of the glass and the formation of stress spots

[0006] 2. For the glass in the same furnace, the time from the time when the front glass comes out of the furnace to the first swing back is longer than the time from the back glass to the first swing back, which is S / V seconds longer, resulting in different heat dissipation from the front and back of the glass, and stress on the front and back of the glass. There is a difference

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