Two-path cigarette making machine for preventing mutual interference of two-path microwave detection

Abstract

The invention discloses a two-path cigarette making machine for preventing mutual interference of two-path microwave detection. The machine comprises a deformed cylindrical resonant cavity with a truncated side and a cut-off waveguide pipe arranged on the deformed cylindrical resonant cavity, wherein the cut-off frequency of the cut-off waveguide pipe is higher than the working frequency of transmitted microwave signals, and the deformed cylindrical resonant cavity comprises an electrically-coupled first channel resonant cavity working in a TM010 mode and a magnetically-coupled second channelresonant cavity working in a TE111 mode. By means of the two-path cigarette making machine for preventing the mutual interference of the two-path microwave detection, the detection sensitivity of a microwave detection system can be improved, the problem of the mutual interference of the two-path microwave detection system in the two-path cigarette making machine is reduced, and the reliability ofthe microwave detection system of the high -speed cigarette making machine is improved.

Description

technical field [0001] The invention specifically relates to a two-way cigarette making machine which avoids mutual interference of two-way microwave detection. Background technique [0002] During the production process of cigarettes, the humidity and density of cigarettes need to be strictly controlled. Its measurement and control are directly related to product quality and production efficiency. Real-time, non-contact, non-destructive measurement is an important requirement and research direction for humidity and density measurement. [0003] Since the 1980s, in order to increase the production speed of cigarette machines, German Hauni and other cigarette machine manufacturers have launched double-bar ultra-high-speed cigarette making machines. It installs two sets of high-speed automatic cigarette rolling systems in the same cigarette machine for simultaneous production, thus doubling the cigarette production capacity. In order to detect the density and humidity of th...

AI Technical Summary

Problems solved by technology

The purpose of this patent is to provide a microwave detection system for double-track cigarette making machines, which can solve the problems of microwave leakage and mutual interference between the two resonant cavities in the microwave detection system of double-track cigarette making machines. The influence of residual microwave leakage on the humidity and density detection of cigarettes in the two flues is minimized

[0005] The system designed according to the above-mentioned patent has been practically applied in the tobacco factory. Although it has basically solved the problem of mutual interference between the two-way microwave detection system in the microwave detection system of the double-rod ultra-high-speed cigarette machine, due to the narrow installation space of the cigarette machine, The size of the microwave detection device is limited, the two signals are too close, and in some cases the influence of the two signals cannot be completely eliminated

As a result, signal instability sometimes occurs during detection

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