Implementación de un sistema de control automático de temperatura para la máquina corrugadora de la industria cartonera “INCARPALM”.

Abstract

A temperature automatic control System was designed and implemented for the corrugating machine of INCARPALM industry located en El Oro province, Machala city. This company generated wasted due to the lack of a systematized and automatic control of temperature. The control was carried out in a manual way that is why two problems called false sticking and crystallized were present as well as the uncertainty the operator had when measuring the temperature; this impeded increasing the production speed. Another problem due to the manual temperature control was the working environment of the operator; this was a tiring environment and full of activities to achieve the required temperature to produce high quality paper. To solve all these problem in the corrugated machine it was necessary to design and implement temperature automatic control system in the single and medium facer stage where it was necessary to identify the inputs and outputs which were part of the control system, it was also necessary to implement the electronic and monitoring stage as well as a test bench to verify the results obtains by means of the implantation. This temperature control system was based on the automatic control of the corrugating rollers in the external, internal and medium liner paper in order to reach the required temperature. If more temperature was required the system automatically produced more corrugated paper around the preheating rollers. For the system had an On/Off control where the temperature sensors were used to close the control system cycle and as a controller a PLC logo was used. The operator had to establish the required temperature value on the touch screen in this way this system started to work to obtain high-quality corrugated paperboard. According to the waste chart provide by the planning department an as a results of the system implementation, it is show that corrugated cardboard waste was clearly reduced from 4493 kilograms to 12 kilograms, in this way the speed production increased from 150 meters per minute to 200 meters per minute. Finally it was concluded that system implementation provided a better working environment for the operator, on the other hand downtime production was reduced. So it recommended that qualified personnel carries out preventing checking of a different system equipment whenever they make a planned maintenance in order to preserve the life time.