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Abstract(s)
Com o objetivo de garantir o correto transporte de um lote de peças para uma máquina de injeção, foi solicitado `a WRK, Lda uma solução capaz de satisfazer os objetivos apresentados e cumprir o tempo de ciclo pretendido. A solução desenvolvida consiste num sistema automatizado que tem como objetivo efetuar o carregamento de peças, e garantir o seu correto posicionamento para transporte para uma máquina de injeção. De forma a garantir a gestão lógica do sistema, foi utilizado um Programmable Logic Controller (PLC) da Siemens, que executa todas as operações necessárias que asseguram a alimentação das peças, assim como a sua correta orientação, através de controlo lógico dos equipamentos e dispositivos utilizados. Foi utilizada uma Human Machine Interface (HMI), que permite o acompanhamento do processo, assim como o controlo dos elementos atuadores. Para efetuar o transporte das mesmas entre as duas máquinas envolventes no sistema foi utilizado um Colaborative Robot (COBOT), da Universal Robots, para que transporte as peças para serem injetadas e volta a transportá-las, depois de injetadas, para recolha do operador. De modo a garantir a segurança do sistema, foram utilizados elementos como barreiras e portas de segurança, controlados por um PLC de segurança da Schneider. No final, foi obtido um sistema autónomo, capaz de cumprir os requisitos impostos como o tempo de ciclo. Neste documento serão apresentados os desenvolvimentos efetuados, com foco na programação do COBOT, do PLC e da HMI. Vão ser descritas as decisões tomadas ao longo do processo, assim como os critérios utilizados para as mesmas. E também descrita a parte de segurança do sistema, como a sua programação, ´ que envolvem todos os equipamentos abordados.
In order to ensure the correct allocation of a batch of parts to an injection machine, WRK Lda was solicited to provide a solution capable of satisfying the presented objectives and fulfilling the intended cycle time. The developed solution consists of an automated system whose main function is to load parts and ensure their correct positioning for the transportation to the injection machine. In the interest of guaranteeing the logical management of the system, a Siemens PLC was used, which performs all the necessary operations that assure the power supply of the parts, as well as their correct orientation, through logical control of the equipment and devices utilized. An HMI was used, which permitted the monitoring of the process, as well as the control of the actuating elements. To transport the parts between the two machines of the system, a Universal Robots COBOT was used to transport the parts that were to be injected and then transport them again afterbeing injected, for the operator to collect. To guarantee the safety of the system, elements such as safety barriers and ports were used, controlled by a Schneider safety PLC. In the end, an autonomous system was achieved, capable of fulfilling the imposed requirements such as the cycle time. In this document will be presented the developments carried out, focusing on the COBOT, PLC and HMI programming. The decisions that were taken throughout the process will be described, as well as the criteria used for them. The security part of the system will be also described, such as its programming, which involve all the covered equipment.
In order to ensure the correct allocation of a batch of parts to an injection machine, WRK Lda was solicited to provide a solution capable of satisfying the presented objectives and fulfilling the intended cycle time. The developed solution consists of an automated system whose main function is to load parts and ensure their correct positioning for the transportation to the injection machine. In the interest of guaranteeing the logical management of the system, a Siemens PLC was used, which performs all the necessary operations that assure the power supply of the parts, as well as their correct orientation, through logical control of the equipment and devices utilized. An HMI was used, which permitted the monitoring of the process, as well as the control of the actuating elements. To transport the parts between the two machines of the system, a Universal Robots COBOT was used to transport the parts that were to be injected and then transport them again afterbeing injected, for the operator to collect. To guarantee the safety of the system, elements such as safety barriers and ports were used, controlled by a Schneider safety PLC. In the end, an autonomous system was achieved, capable of fulfilling the imposed requirements such as the cycle time. In this document will be presented the developments carried out, focusing on the COBOT, PLC and HMI programming. The decisions that were taken throughout the process will be described, as well as the criteria used for them. The security part of the system will be also described, such as its programming, which involve all the covered equipment.
Description
Keywords
Automação COBOT HMI Injeção PLC Transporte Segurança Automation Injection Transport Safety