Application of a two-section pressure plate in a die-cutting automatic press: prospects of replacing the monoblock design

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Rehei I. I., Vlakh V. V., Михайлів Ю. Ю., Mlynko O. I. № 2 (67) 239-248 Image Image

It is noted that the global demand for cardboard packaging continues to increase, and the volumes of processed cardboard-based packaging material are growing. This trend requires the engagement of high-productivity die-cutting equipment and its technical modernization. The emphasis is placed on the short-term process of die-cutting cardboard blanks due to their slight thickness. At the same time, the press pressure plate overcomes the total resistance from deforming ejection pads, cardboard cutting, and folding line buckling. It is established that the technological resistance of cardboard cutting is dominant. It is proposed to replace the monoblock construction of the pressure plate with a sectional one to minimize peak loads on the press drive. This technical modernization of the press enables sequential die-cutting of cardboard blanks with separate sections of the pressure plate. Analytical dependencies are provided for studying the angular displacement on the drive shafts of parallel wedging mechanisms depending on the thickness of cardboard blanks. Their values are obtained for specific thicknesses of the processed material, which are important for adjusting the die-cutting press drive.

Keywords: die-cutting press, wedging mechanism, pressure plate, sectional construction, cardboard blank, driving crank, die-cutting resistance.

doi: 10.32403/1998-6912-2023-2-67-239-248

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