CRT glass bulb hot cracking separation method

Abstract

The invention belongs to the electronic waste treatment technology field, particularly to a CRT glass shell hot cracking separation method comprising three processes: autorotation aerodynamic reticule, autowinding heating and auto blowing quenching cracking and blasting of the working table, wherein the three processes are controlled by a program to automatically accomplish on the same work table. A vacuum chuck fixes the CRT glass shell using vacuum adsorption, an aerodynamic nicking tool is pushed to collide the surface of the CRT glass shell and accomplish the surface reticle of the CRT glass shell under the driving of a rotary work table, a heating belt is winded around the notch on the CRT glass shell surface along with the rotation of the rotary work table and is winded off the beltafter heated. A wind blowing opening on the surface of the rotary work table supplies cold air for the heating portion on the surface of the CRT glass shell, the CRT glass shell shrinks and bursts soas to accomplish the separation of the cone glass and the screen glass. The method of the invention is easy to operate and control with a high automaticity and wide applicability, is suitable for applying the glass shell separation treatment of the color television or computer CRT display.

Description

technical field [0001] The invention belongs to the technical field of electronic waste treatment, and in particular relates to a thermal cracking separation method for a CRT glass bulb. Background technique [0002] There is a big difference in chemical composition between the cone glass and the screen glass in the CRT glass bulb. The cone glass contains high lead components, while the screen glass does not contain lead. Lead is very harmful to the human body and the environment. Resource utilization is risky. In order to improve the resource utilization rate of waste CRT glass, it is necessary to separate the cone glass from the screen glass when processing the CRT glass bulb, recycle the lead-free screen glass and make new glass products, while the lead-containing cone glass needs Do harmless treatment. [0003] There are physical methods (thermal shock method, melting method, heating wire method, laser treatment, and cutting separation, etc.) and chemical methods (nitr...

AI Technical Summary

Problems solved by technology

Patent CN200520132498 first uses a scoring roller knife along the screen cone glass seam, and scratches the screen glass at a distance of 10 mm from the seam for a week, then covers the scratch with a heating wire for heating, then cuts off the hair dryer, and utilizes the sharp change in temperature of the glass The internal stress generated under the pressure causes the cone glass and the screen glass to separate. The disadvantage of this technology is that the heating wire and the cold blower are fixed on the lifting frame. The shape and size of the heating wire only match the CRT glass bulb of a certain specification, and cannot Adapt to the processing of CRT glass bulbs of different specifications and sizes. The heating wire is affected by the cold wind every time, and the rapid heating and cooling changes frequently, and the service life is short. The positioning of the CRT glass bulb and the operation of the heating wire lifting frame need manual control and automation every time. level and work efficiency is not high

Patent 200710050178 is improved on the basis of patent 200520132498. In patent 200710050178, the CRT glass bulb is first centered and positioned on the operating platform, and then the position of the score line is heated by rotating the CRT glass bulb and heating wire winding, so that the glass Heating achieves the purpose of separating the cone and screen of the CRT glass bulb. The disadvantage of this technology is that the positioning of the CRT glass bulb is cumbersome. Every time the CRT glass bulb is positioned, it is necessary to manually set the centering device on the CRT neck cone glass, and then manually adjust the positioning device. , carefully adjust the position of the CRT glass bulb and then stabilize the CRT glass bulb, which reduces the working efficiency of the equipment and improves the operation requirements; because the marking method of this technology adopts the swing arm type secondary marking line, the marking line pressure varies with the CRT glass The rotation of the shell is constantly changing, and the scoring lines are not uniform, resulting in uneven changes in the internal stress of the glass during the heating process. The scoring line is completed in two times, which affects the working efficiency of the equipment, and there is no cooling means for the glass shell after heating, which is not easy to realize. The purpose of "instantly changing from hot to cold" that the patent hopes to achieve

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