Bending, fusing, softening method for fluorescent lamp finned coil

Abstract

The invention relates to an improved method for bending, roasting and softening a fluorescent tube piece, which is characterized in that both ends of a roasting glass tube are provided with counterweight sections. The glass tube just needs to be cut into normal length, so that the improved method not only can guarantee that the roasted glass tube has enough straightened balance weight and the middle of the glass tube can not be drooped, bent and dropped in the process of large-length roasting and softening but also saves the step of lengthening the counterweight of the glass tube and can save 20 to 30 percent of the glass tube; due to no existence of a counterweight glass tube, the step of removing the counterweight glass tube after the tube is bent is saved and the defects caused by removing the counterweight glass tube are overcome; and addition of the counterweight can also increase the weight of the counterweight, is favorable for straightening the roasted glass tube, and can reduce roasting, softening, drooping and dropping of the glass tube, and improve the qualified rate of an elbow tube. The method is simple and feasible, has high economic value, ensures that roasting and bending of the glass tube can be equilongly performed as required, and completely prevents waste of the roasted glass tube.

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 excess 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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