A Design Method of Gravure Printing Machine Oven with Consistent Air Nozzle Air Velocity

Abstract

The invention discloses a design method of a gravure printing machine oven with tuyeres consistent in air speed. The design method particularly comprises the following steps that 1, structural designon the gravure printing machine oven is carried out; 2, fluid domain modeling is carried out on the designed oven, and discretization treatment is carried out on a fluid domain; 3, a flow field operation result is displayed and analyzed; 4, structural adjustment is carried out according to the flow field analysis result in the step 3; 5, the oven subjected to the structural adjustment design is subjected to operation in the step 2 and the step 3 repeatedly; 6, original tuyere structures are optimized; and 7, a final design scheme of the gravure printing machine oven is determined. The design method is simple and clear and is convenient to apply and high in implementation property; the problem that the gravure printing machine is not accurate in overprinting is solved; and the printing speed of the gravure printing machine is increased.

Description

technical field [0001] The invention belongs to the technical field of printing engineering, and relates to a design method of an oven for a gravure printing machine with uniform air nozzle wind speed. Background technique [0002] At present, the ovens of most gravure printing machines are located between each printing unit, and the hot air blown out by rows of nozzles dries the printing ink on the roll material substrate or substrate. Among them, the difference in the wind speed of each air nozzle in the oven should not be too large, and the speed is equal to the most ideal state, because the wind speed difference of the air nozzle will cause the vibration of the roll material substrate, which will have a very serious impact on the overprint quality , which in turn affects the improvement of printing speed. Existing ovens for gravure printing machines use empirical design methods or general simulation design methods, but due to various factors, they cannot achieve the goa...

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Problems solved by technology

Among them, the difference in the wind speed of each air nozzle in the oven should not be too large, and the speed is equal to the most ideal state, because the wind speed difference of the air nozzle will cause the vibration of the roll material substrate, which will have a very serious impact on the overprint quality , which in turn affects the improvement of printing speed

The existing gravure oven adopts the empirical design method or the general simulation design method, but due to many factors, it cannot achieve the goal that the air speed of the tuyere is basically the same

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