Cigarette unperforated/missed perforation detection device, laser perforator and detection method

Abstract

The invention discloses a cigarette unpunching / punching missing detection device, a laser punching machine and a cigarette unpunching / punching missing detection method, and belongs to the technical field of cigarette equipment. The cigarette unpunching / punching missing detection device comprises two fixing blocks and a detection drum arranged between the two fixing blocks; the detection drum is adetection drum of a cigarette making machine; flanges are arranged at the two ends of the axial direction of the detection drum; a plurality of vent holes are circumferentially formed in the flanges at intervals; gas guiding grooves and gas holes communicated with the gas guiding grooves are formed in the fixing blocks; the gas guiding grooves are arc-shaped grooves with convex arcs at one ends and concave arcs at the other ends; the lengths of the gas guiding grooves are equal to integral multiples of the distance between adjacent vent holes in the circumferential direction of the detection drum. A cigarette unpunching / punching missing detection method is achieved by the cigarette unpunching / punching missing detection device. The invention discloses the cigarette unpunching / punching missing detection device, the laser punching machine and the cigarette unpunching / punching missing detection method.

Description

Technical field [0001] The invention belongs to the technical field of cigarette equipment, and in particular relates to a non-perforated detection device with cigarettes. Background technique [0002] When laser perforating the cigarette filter tip, sometimes there will be no perforation (unsuccessful perforation) or missing perforation. In the invention patent No. 201410015291.1, a cigarette leakage detection method is disclosed Method, by detecting the pressure difference between the inlet and outlet air, the ventilation degree of the cigarette can also be calculated. However, as stated in the document, the detected data is affected by mechanical rotation and air source pressure fluctuations, especially the entry and exit of cigarettes. At the alternation of time, the cross-sectional area of ​​the cigarette contained in the detection groove changes, and the airflow passing through the end of the cigarette changes, which causes a large fluctuation in the detection air pressure,...

AI Technical Summary

Problems solved by technology

[0002] When laser drilling is performed on the filter tip of a cigarette, sometimes it may not be perforated (punching is not successful) or the hole is missed. In the invention patent with the patent number 201410015291.1, a cigarette leakage detection method is disclosed. method, the ventilation degree of cigarettes can also be calculated by detecting the pressure difference between the intake air and the outlet air, but as stated in its document, the detected data is affected by mechanical rotation, air source pressure fluctuations, etc., especially when cigarettes enter and exit Alternating time, the cross-sectional area of ​​the cigarette included in the detection groove changes, and the airflow passing through the end face of the cigarette changes, causing large fluctuations in the detected air pressure, which makes the data inaccurate

[0003] Because the existing problems are difficult to solve, so far there is no laser drilling machine with the function of detecting unperforated / missed perforations in cigarettes.

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