Desarrollo de un plan de mantenimiento preventivo y predictivo mediante la distribución de WEIBULL para las Inyectoras horizontales de polímeros en la empresa Ingeniería Diseño de Suelas

Abstract

The present technical work is developed based on the needs of carrying an adequate preventive and predictive maintenance for the injectors of polymers in the company of "Ingenieria Diseño de Suelas", with the purpose of diminishing the times of repair produced by the failures caused in the components of the machines and thus be able to avoid the unnecessary stops in the production and in the injected of the soles of shoes. For the development of the plan, statistical data of maintenance activities previously carried out were taken, which allowed us to identify, through an AMFE matrix, the most critical components or the most prone to failures. Subsequently, with the collected data, the statistical analysis was carried out by means of the WEIBULL distribution of each injector machine, both the mathematical model and the graphic model, calculating the reliability of the data that have a 95% truthfulness, because the method WEIBULL allows to give a more relevant criterion on which position of the curve of the bathtub are the machines and the pertinent actions that must be carried out to avoid the failures. To carry out this project, NTP 331 and NTP 679 were used for the WEIBULL and AMFE analyzes respectively, after which the preventive maintenance ranges were carried out each month to keep the organized control of the same, thus avoiding unnecessary stoppages that harm the good operations of the machines.