Mejora de la productividad en el área de inyección de piezas de plástico de la empresa Multiaccesorios M.G. mediante herramientas de manufactura esbelta

Abstract

In this research, the application of lean manufacturing tools is proposed based on the waste found in the injection process of plastic headbands at company Multiaccesorios M.G. First technical visits to the company were scheduled to collect data, obtaining information regarding the products offered by the company, demand and sales pertaining to the first 6 months of 2020, data that allowed an ABC analysis that determined the most relevant product for the company, that is the model 204 headband for universal upholstery, then the process survey, time study, analytical course chart and value flow mapping were elaborated, identifying the waste present in the actual process. Simulation of the production plant was created to compare its results with the data obtained by calculations and once the opportunities for improvement were identified, the lean manufacturing tools were appointed. Applying the 5's tool, an improvement in the workspace is recognized and together with SMED activities are optimized reducing unnecessary transport and movements. The standardization application allows the normalization of the initial activities of preparation of the injection machines, reducing the set-up times and with the balancing of lines it is proposed to enable a third injector and assign activities to one of the workers, eliminating the neck of bottle of the process and increasing weekly production. Finally, the economic benefits are analyzed, obtaining a semester profit of $ 13,838.16 as a result of the implementation of the assigned tools, after which the new proposed value flow map is presented and the simulation of the production plant is carried out with the improvements implemented, obtaining an increase of 5,844% in the productivity of the plant.