METHOD FOR PRODUCING A ROTARY EMBOSSING CYLINDER AND A CYLINDER MADE ACCORDING TO SAID METHOD

摘要

The invention relates to the mechanical processing of sheet, roll or composite materials, in particular, to means for mechanically shaping a material without removal thereof, namely to the structural design of the rotary embossing cylinders which can be used for producing packing materials, wall-paper etc. The aim of the invention is to accelerate the process for producing a rotary embossing cylinder, since the used cutting tool comprises less cutting edges. The milling of transverse grooves on a lathe with the same (constant) or variable pitch does not require additional devices, i. e. it makes it possible to achieve the different density of projections per surface unit. The longitudinal grooves are made by means of an electrode, the production of which is more simple than the production of cutting tools. The cylinder produced according to the inventive method has projections of different shape, thereby making it possible to extend the range of functionalities thereof. The method for producing a rotary embossing cylinder involves forming a ribbed surface by means of projections which alternate at a specified pitch in the longitudinal and transverse directions, narrow and/or do not narrow towards the top, and grooves. The ribbed surface is formed on the surface of a cylindrical blank by machining it in a transverse direction by means of a cutting tool, and the longitudinal grooves are made by electroerosion or electrochemical processing, wherein the pitch of the projections in the longitudinal and transverse directions can be constant or variable.