Implementación de un sistema automatizado de una prensa electrohidráulica de embutido para la producción y acabado de las cocinas domésticas de dos quemadores.

Abstract

The Industrias Géminis artisan company is dedicated to producing domestic and commercial kitchen stoves; due to this, the need to optimize its production processes was determined by reducing time and increasing the products to satisfy the customers' demand for producing quality products. Currently, the company has a manual electrohydraulic press with problems, such as non-uniform pressing due to variations in pressure times and force exerted on the metal sheets. Automating the electrohydraulic press was proposed to improve efficiency, performance, and production times. Which performs the processes of drawing, pressing, and bending metal parts; the system consists of a programmable logic controller and a human-machine interface that allows defining and configuring the way of working, allowing the activation of actuators such as the valve control, the hydraulic cylinder, and electric motor, based on the information received by the position sensors and safety barrier. The proposed automation method reduced production times by 49% compared to the manual process. In addition, an evaluation was carried out using the metric called Overall Equipment Effectiveness (OEE), where the results showed a 60% increase in the machine's efficiency. Therefore, the system meets the expected characteristics for producing domestic and commercial kitchen stoves. Finally, it has been established that preventive maintenance must be carried out every six months to maintain the proper operation of the machinery and the system, which provides safety to the operating personnel and preserves the equipment's lifetime.