Repotenciación de una Máquina Rebobinadora de Lámina Plástica

Abstract

The rewinding machine is designed for the rewinding of stretchable plastic sheet, it is made up of three fundamental electrical, mechanical and pneumatic parts. In the electrical part, the electromagnetic brake-clutch system was replaced, which is original to the machine, but due to its operating principle (electromagnet) and brake shoe, it produces complications such as rewinding with plastic sheet defacement, linearity of rewinding out of acceptance range, this due to the wear of the braking area. The most affordable solution was the placement of a speed control system for the electric motor using a frequency inverter complemented with a braking resistor, it was subjected to operational tests achieving an optimum result of work. In the mechanical part, the corrective maintenance is carried out on the rollers, as well as the placement of a rubber roller that helps to maintain stability in plastic sheet at the time of performing machine braking. In the pneumatic part, the adaptation of a double-acting pneumatic piston, linear bearings and metal guides allow the cardboard cones to be properly and fluidly placed at the moment of continuous work. These three fundamental parts allow to improve the efficiency of the machine, an increase of production and that the waste generated is within the traceability of cost benefit.