Optimizing the parameters of leather pressing machines

Abstract

The work is devoted to the optimization of the parameters of leather pressing machines. Regression models of the residual moisture content of leather and the intensity of the pressing process are developed. which depend on the intensity of the load. the radius and the speed of the rollers. A number of patterns were established that allow increasing the efficiency of leather pressing by rollers. An extremum problem was solved to determine the diameter of the rollers that provide the minimum deflection of their working part. the content of residual moisture required during the pressing process and the minimum power required to conduct the pressing process.

Study on issues of hydrodynamics of the roll squeezing process

“…An analysis of the calculated data and curves of hydraulic pressure distribution described by models (11) and (12) showed that they fully correspond to the theoretical conclusions and experimental diagrams of hydraulic pressure given in [5,13,23]. As is known [4,5], the amount of removed fluid flowing along the roll contact curve can be determined by the following expression:…”

Study on contact lines of rolls of two-roll modules

“…There are quite a lot of works aimed at developing the scientific foundations for designing and improving roller machines used in many industries when performing various technological processes. At the same time, solving problems of contact interaction, taking into account the physical essence of technological processes, are relevant [1,2]. The analytical description of the processes of the contact line of rolls having elastic coatings is hampered by significant deformations of both contacting bodies.…”

“…Solutions to the problems of contact interaction in roller machines, where the work rolls have an elastic coating, depend on how fully it represents the laws of deformation of the contacting bodies [4,5]. An analysis of the experimental data [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] has shown that, in general, the deformation of such contacting bodies of roller machines is described either by empirical formulas of the form n A   , or by rheological models of the form…”

Study on equations of curves of the squeezing machines’ contact of rolls

“…The material being processed is fed in such a way that the line, which is a continuation of its front end, passes through the axis of rotation of the upper roll, since no additional external forces are required to carry out the capture [4]. Works [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] are devoted to the creation of scientific foundations for the development of roller squeezing machines and the improvement of their parameters. At the same time, it is observed that in the listed works, mathematical models of curves of contact rolls are developed under static interaction conditions.…”