Electrolytic apparatus for aluminum base plate for printing

Abstract

The invention discloses an aluminum basal plate electrolytic device for printing, which comprises an oxidation bath, electrolytic electrodes, a liquid supply pipe and a liquid supply box, wherein the liquid supply pipe is connected to the top middle of the liquid supply box, a strip liquid outlet with the length consistent to the width of an aluminum basal plate is arranged at the bottom of the liquid supply box and is parallel to the electrolytic electrodes, and an included angle alpha between the liquid effluence direction of the liquid outlet and the advancing direction of the aluminum basal plate is from 120 degrees to 150 degrees; an inner baffle is arranged in an inner cavity of the liquid supply box, a gap is arranged at the top of the inner baffle, and the liquid outlet and the inlet of the liquid supply pipe are respectively arranged at both sides of the inner baffle. The device is used for the surface micropore treatment of the aluminum basal plate for a printing industry; the liquid outlet of the liquid supply box is an inclined strip opening, and a sprayed electrolyte presents a water curtain type liquid level so that electrolyte reaction concentrations at all parts ofthe aluminum basal plate are identical to further improve the uniformity of electrolytic grains and improve the electrolytic efficiency and the formation rate of composite grains.

Description

technical field [0001] The invention relates to an aluminum material electrolysis device, in particular to an electrolysis device for performing surface microporous treatment on an aluminum base plate for printing. Background technique [0002] The base plate of offset printing in the printing industry is made of pure aluminum plate after surface microporous treatment and oxidation treatment, and then coated with photosensitive glue and dried. The micropores on the surface are ideally obtained by electrolysis. The micropores are the shape and uniformity of the electrolytic sand mesh, especially the number of composite sand meshes is related to the quality of the printed product. Obtaining ideal electrolytic grains requires advanced electrolytic equipment, and the electrolytic liquid supply device in the current electrolytic equipment needs further research and improvement. Chinese patent ZL200620031774.1 discloses an electrolysis device, in which the liquid supply device ad...

AI Technical Summary

Problems solved by technology

However, the electrolyte sprayed by the spray pipe is "one line" rather than "one surface", and the electrolyte flow field corresponding to the part of the aluminum base plate located under the spray hole and between adjacent holes is not uniform , the reaction concentration is still different, thus affecting the uniformity of the electrolytic sand

In the prior art, there is also a method of changing the spray hole to a strip-shaped outlet, but the liquid spray pressure at each part of the outlet is not balanced, which will also affect the uniformity of the grain size, and the direction of the liquid spray at the outlet does not form a suitable alignment with the aluminum substrate. The angle is not conducive to the ash removal of the sand, and affects the electrolysis efficiency and the generation of the composite sand.

Images