Automatización de la máquina Sear de la empresa Markes para ejecutar tareas de enrollado y medida de cinta rígida y elástica incrementando su disponibilidad, rendimiento y calidad de producción.

Abstract

The project's objective was to automate the "Sear" machine to measure and wind tasks of rigid or elastic strips, increasing their availability, performance, and production quality. The methodology was based on the compliance of sequential stages for the development of the technical project, which considered the requirements approach, dimensioning of the components, design and implementation, calibration, tests, and final evaluation. The research was carried out in 4 modules; the first is visualization, which has a screen for the human-machine interface (HMI), allowing the operator to select and define the type and amount of string to work with; the second is data acquisition, which was done by adapting an inductive sensor to the rotary guides to determine the number of rotations and estimate the number of rolled meters, in the third control module a high-power DC motor driver was used to control the operation of the engine. Finally, the fourth storage module has a real-time clock device (RTC) and microSD (Digital Security) to define and record the date and number of units produced, all controlled from an Arduino mega 2560. From the tests measurement and winding of rigid and elastic strips and the analysis of the efficiency of the machine calculating its availability, performance, and production, it was obtained that, before automation, the availability was 91%, the performance was 39.59%, and the quality had 94.50%, giving a total efficiency of 33.96%. After automation, the results obtained were 93% availability, 92.50% performance, and 98.5% quality, totaling 84.70% efficiency. It is concluded that the automation of the machine improved its efficiency in the parameters of availability, performance, and quality from 33.96% to 84.70%. Adding a strip-cutting system is recommended to increase the productive capacity of the machine.