Real-time quantitative detection method for plasticizer spraying amount in online production process of filter stick

Abstract

The invention provides a real-time quantitative detection method for the plasticizer spraying amount in the online production process of a filter stick. The method specifically comprises the followingsteps that 1, a plasticizer storage device adds a plasticizer to tows through a supply metering pump, and a supply flow meter detects a supply flow value s1; 2, the tows enter a plasticizer sprayingarea, and a speed measuring sensor measures the running speed v of the tows; 3, a spreading measurement sensor measures the spreading width d of the tows; 4, the plasticizer returns to the plasticizerstorage device through a plasticizer return pipeline, and a return flow meter detects to obtain a return flow value s2; and 5, the data of all the sensors in unit time t is intercepted, and the spraying amount savg of the plasticizer in unit area in unit time is calculated according to the following model; savg=(s1- s2) / (v*t)*d.

Description

technical field [0001] The invention relates to the on-line production of filter rods in the tobacco industry, in particular to a real-time quantitative detection method for the amount of plasticizer sprayed in the on-line production process of the filter rods. Background technique [0002] In the tobacco industry at home and abroad, the filter rod forming process is a very important part of the entire cigarette manufacturing process. The main components of the filter rod include: cellulose acetate tow, plasticizer, molding paper and glue. The filter rod process mainly includes: opening and adding plasticizer process (tow unpacking and positioning, tow extraction, opening, adding plasticizer), forming process (tow strip forming, adhesive application, rolling , on the lap glue) and the output process (cutting, conveying, loading, curing). Among them, the role and process tasks of the opening link are: 1) to obtain good opening and provide production yield; 2) to stabilize t...

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Problems solved by technology

Similarly, in the filter rod forming process stage of cigarette manufacturing, a case (CN1635840A) of on-line measurement of plasticizer based on the microwave method has also been disclosed. The core principle of this method is to separate the Carry out the mass of acetate tow without plasticizer and plasticizer, and then carry out the mass per unit length to calculate the difference, the difference is the quality of fiber tow, but there is no such method in the tobacco industry Get application, mainly contain 3 points: 1) this device carries out the measurement of the quality of unit length before first-level opening and final cutting, and the core problem of this method is, the tow of unit length before first-level opening and final cutting The degree of crimp is not the same, or it cannot always be consistent (the degree of crimp is a very important indicator of acetate tow, although this method also illustrates the degree of coordination of the degree of crimp by speed, but in fact it is It is not feasible, because there is no sensor for the feedback control of the crimp, so the result is that the crimp before and after can not be consistent in real time, even if the method is speed controlled, and the crimp is always changing in the actual production process , because the curl degree of the front-end acetate tow package will change), and once the curl degree of the fiber tow changes, this will cause the front and rear lengths of the unit length to be unequal, and then the difference will lose meaning, and then based on Going to convert the quality of the plasticizer in the unit length is more unreliable, and even more, it will have a negative effect; in other words, this method is designed under the condition that the assumed crimp is constant; 2) the second The first reason is that, as is well known in the tobacco industry, the application of the equipment should be carried out according to the disclosed method, unless the molding machine is elongated and modified; 3) the two sensors are subtracted, and then the difference is obtained for calculation Method, the time lag is very large. Calculated according to the length of a molding machine of about 5 meters, the time lag should reach a movement distance of about 3 meters. Calculated according to the movement speed of an ordinary KDF2 molding machine at 400 m / min, it will take at least 2 seconds ; 4) The price is extremely expensive, which is not conducive to application

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