Propuesta de mejora para el proceso de cambio de moldes en una línea de producción de envases plásticos por soplado mediante el estudio de tiempos y movimientos

Abstract

In the present study, a proposal to enhance the mold change process in a plastic packaging blow molding production line was undertaken. The overarching aim was to optimize this process through a comprehensive study of times and movements. Information was gathered encompassing both the general mold change process and the time allocations for each of the sub-activities involved, focusing on three distinct types of containers with high production demands. Results indicated varying average mold change times depending on the container type: 5273.24 seconds for the "PQ 1000 ml white 100 gr", 5012.82 seconds for the "Cylindrical Gallon 105 gr", and 6597.58 seconds for the "Easy Iron 600 ml PE". The normal and standard times of the process were established, considering the operators' work rhythms and additional factors such as standing work, physical exertion, and noise pollution, among others. The resulting standard times were 6222.42 seconds, 6465.6 seconds, and 7042.47 seconds, respectively, highlighting the impact of these factors on the process. Finally, a comprehensive process improvement was proposed, grounded in the findings from the analysis of times and movements. The proposal encompasses implementing ISO 9001 (2015), introducing a personnel training program, and adopting total preventive maintenance (TPM). These enhancements aim to optimize the mold change process, enhancing operational efficiency, cutting costs, and elevating the quality of the final product.