Moisturizing method and moisturizing strip for nozzle of digital printing machine

Abstract

The invention discloses a moisture retention method used for a digital calico printing machine nozzle. The method comprises the steps of preparing a moisture retention strip by pad printing silica gel, installing the moisture retention strip nakedly on a horizontal platform, and maintaining the upper surface of the moisture retention strip horizontal; moving a nozzle needing moisture retention to be right above the moisture retention strip, moving the nozzle downward to contact with the moisture retention strip and slowing down, pressing down the moisture retention strip at a speed in a range from 0.5mm / s to 1mm / s with the moisture retention strip generating elastic deformation and squeezing out air at each spray orifice outlet of the nozzle, and stopping pressing down the moisture retention strip after the upper surface of the moisture retention strip is sealed and flat with the spray orifices of the nozzle and completely seals all the spray orifices of the nozzle; maintaining the relative position of the nozzle and the moisture retention strip to be constant after pressing-down is completed, and isolating the spray orifices of the nozzle from air and preserving moisture of ink in the spray orifices of the nozzle. The invention also discloses the moisture retention strip applied to the above method, the moisture retention strip is a strip-shaped elastomer made of a pad printing silica gel material. The moisture retention method used for the digital calico printing machine nozzle can seal the nozzle and preserve moisture of the nozzle conveniently and cleanly.

Description

technical field [0001] The invention relates to a maintenance technology of a digital printing machine, in particular to a moisturizing method for a spray head of a digital printing machine, and also relates to a moisturizing strip applied to the method. Background technique [0002] The digital printing machine needs to maintain and moisturize the nozzle after use. The purpose is to prevent the solvent-based ink from clogging the nozzle hole of the nozzle due to volatilization. The moisturizing effect of the nozzle is directly related to the service life of the nozzle. The traditional moisturizing method is generally to use a moisturizing box with hygroscopic materials such as sponge, and fill the moisturizing box with an appropriate amount of moisturizing liquid, and make the sponge in a wet state through the contact of the sponge with the moisturizing liquid. Sponge for moisturizing effect. [0003] This moisturizing method has the following defects in actual application...

AI Technical Summary

Problems solved by technology

[0003] This moisturizing method has the following defects in practical application: (1) Since the sponge has been exposed to the air for a long time, and the cloth in the printing workshop has a lot of dust, it is easy to float and fall in the sponge and moisturizing liquid, so when the nozzle When moisturizing for a long time, the small dust falling into the moisturizing liquid may enter the nozzle hole of the nozzle and block the nozzle hole under the interaction between molecules; (2) Although the sponge is immersed in the moisturizing liquid, it will Among them, the bonding and sealing between the sponge and the nozzle hole of the nozzle is not good, and air still enters, so there is a phenomenon that the nozzle of the nozzle is broken due to the air entering; (3) the amount of moisturizing liquid in the moisturizing box is not easy to control, and the amount If the amount is too much, the moisturizing liquid will be squeezed to the edge of the moisturizing box or outside the moisturizing box when the nozzle is pressed down, and it will be easily stained; if the amount is too small, the moisturizing effect will not be achieved; therefore, a large amount of moisturizing liquid is usually added before moisturizing to ensure moisturizing effect, after moisturizing, use a cleaning cloth to wipe the dirty nozzle holes, humidifier box and other areas, and then press the ink on the nozzle to print a test strip to check the printing status of the nozzle

The whole process is cumbersome, cumbersome, and wastes a lot of moisturizer and cleaning cloth

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