Control method and system for liquid film spraying

Abstract

The invention discloses a control method for liquid film spraying. The control method comprises the following steps that a liquid film material is conveyed to a first needle cylinder set and a secondneedle cylinder set until the liquid film material stored in the first needle cylinder set and the second needle cylinder set reaches a saturation point; when a spraying instruction is received, a volumeto be compressed and conveyed is obtained based on the spraying instruction; according to the volume to be compressed and conveyed, the first needle cylinder set and the second needle cylinder setare alternatively compressed and conveyed to spray the liquid film, and the compressed and conveyed volume of the sprayed liquid film is recorded; and whether the compressed and conveyed volume is less than the volume to be compressed and conveyed is judged, if not, spraying is stopped. According to the method, accurate and quantitative control over liquid film materials of different densities canbe achieved, and the production cost is lowered. The invention further discloses a control system for liquid film spraying, a computer readable storage medium and a control device for liquid film spraying. The beneficial effects are the same.

Description

technical field [0001] The invention relates to the field of glass material manufacturing, in particular to a control method and system for spraying liquid film material, a computer-readable storage medium and a control device for spraying liquid film material. Background technique [0002] The method of spraying the liquid film material on the surface of the glass material is to add the liquid film material into the liquid storage tank, feed nitrogen gas into the liquid storage tank, and send the liquid film material to the spray gun for atomization spraying. The existing spraying machine liquid supply flowmeter is developed for the liquid membrane material with a fixed density value. It mainly depends on the pressure difference generated by the liquid fluid passing through the flowmeter, and the sensor controls the flow rate to monitor the flow rate and monitor the weight of the liquid membrane material. The existing device relies on the sensor of the flowmeter to monitor ...

AI Technical Summary

Problems solved by technology

The existing device relies on the sensor of the flowmeter to monitor the liquid film material, which can only monitor and display the weight of a liquid film material with a fixed density value, and cannot adapt to liquid film materials with different components and different densities. The sprayer flowmeter control device can only For the spraying operation of a film material with a density value of a liquid film material, it is impossible to flexibly switch to other liquid film materials with different density values ​​for spraying operations. The flowmeter monitoring software control system is too simple, and the control system has great limitations.

[0003] In the prior art, when the spraying flow device is replaced with liquid film materials of other components and densities, it is necessary to manually adjust the spraying flow value of each spray gun multiple times for each production, and the error value of the discharge flow rate of each spray gun is more than 10% each time. , for liquid film materials with different densities, it is impossible to automatically monitor the accuracy and stability of the flow rate of the spray gun, and the accuracy of the flowmeter sensor is not enough to match different liquid film materials. The effect of the film layer (which will cause poor liquid accumulation and poor liquid loss) will cause extremely unstable factors to the quality of the manufactured products, causing great hidden dangers in quality

At the same time, the flow channel hole in the flowmeter is very small. If you switch to different liquid membrane materials, it will be polluted due to the different specific gravity of the membrane material, and it is also very easy to block, resulting in serious errors in the flowmeter detection.

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