Softening Method of Bending, Melting and Burning Fluorescent Lamp Tube

Abstract

The invention relates to an improved method for bending, melting, and softening fluorescent tube pieces, which is characterized in that the two ends of the melting glass tube are equipped with counterweight segments. It only needs to cut the glass tube into the right length, which can not only ensure that the fused glass tube has enough straightening balance weight, but also prevent the middle part of the glass tube from sagging and bending when the large length of the glass tube is melted and softened, and the weight of the extended glass tube is omitted. 20-30% glass tube can be saved. And there is no counterweight glass tube, and the process of cutting the counterweight glass tube after bending is omitted, and the defects caused by cutting the counterweight glass tube are overcome. In addition, adding a counterweight can also increase the counterweight, which is also beneficial to the straightening of the sintered glass tube, which can reduce the sagging and drop of the sintered softening glass tube, and improve the qualified rate of the bent tube. The method of the invention is simple and easy to implement, and has high economic value. It creates that the melting and burning of curved glass tubes can be carried out with equal lengths as required, and completely eliminates the waste of melting and burning glass tubes.

Description

technical field [0001] The invention relates to a method for bending, melting, and softening fluorescent lamp tubes, in particular to a bending, melting, and softening method for tubes of quincunx-shaped and spherical fluorescent lamps. Background technique [0002] Compact energy-saving fluorescent lamps are all single-ended fluorescent lamps formed by melting, heating, softening and bending glass straight tubes, and then combining them with bridges to reduce the linear length of the discharge tube. Common examples include: H-shaped, U-shaped, and D-shaped , spiral, quincunx, spherical. Among various compact energy-saving fluorescent lamps, the quincunx-shaped and spherical sheet tubes are the most difficult to bend and form. They need to be bent and formed twice in two directions. The shape of the plum blossom lamp is such as the Chinese patents CN2610489 and CN3344198 applied by the inventor; Described in CN1528690, first melt and soften the large section of the straigh...

AI Technical Summary

Problems solved by technology

However, although this method can effectively ensure that the two ends are supported and the large-width fused glass tube does not sag and bend or fall, it is achieved by lengthening the two ends of the glass tube to achieve a balanced counterweight. After bending the tube, the excess counterweight needs to be removed. Usually the cutting length accounts for about 30% of the total length, which not only causes a lot of waste of the glass tube, increases the consumption of the tube, but also increases the production cost, and the larger the diameter of the tube, in order to keep the melting and softening of the glass tube less drooping, the two ends are reserved The longer the end of the counterweight, the greater the waste of cutting

Secondly, cutting off the redundant counterweight after bending and forming will not only increase the cost of the cutting process, but also cause defects such as uneven incisions and rough incisions, which will affect the pass rate of subsequent sealing, flat ends, bridges, etc.

For a long time, the two bends of the sheet tube have been done by lengthening the glass tube to increase the counterweight and reduce the sagging. The above method of melting and softening the glass tube is a common practice in the industry and has not been improved for a long time.

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