Desenvolvimento de algoritmo para máquina de solda de topo por termofusão

Abstract

The butt-welding process is a process of joining polyolefinic tubes and fittings based on the melting of their ends which will be melted and this subsequent pressing one against other using specific pressures and temperatures during specific times. To carry out the process, a specific welding machine is used, which must be able to control or allow the control by the operator of all the parameters necessary to obtain a good joint. The present work aims to identify the stages of the butt-welding process permitting the development of an algorithm that automates the process and which will be implemented on the machine product of the Embrapii / UFU / Complastec project - NFEM - 2005.00038. The bibliographic survey was carried out based on the main standards and reference literature and then the algorithm and each welding step to be automated were specified. In addition, a methodology was established for the automatic detection of drag pressure, which presented satisfactory results for the case studied, allowing the machine to carry out the process inside the tolerances specified by the welding standards. Such methodology will make it possible to reduce human interference and increase the reliability of the butt-welding process.