Hot runner balancing act

The CoMo Injection system from Kistler Instruments uses cavity pressure to monitor and control the injection process. The system has now been extended with the addition of the MultiFlow option to provide automatic hot runner balancing Cycle by cycle, CoMo Injection with MultiFlow monitors the pressure profile of each cavity of a hot-runner mould from injection, through compression and holding, to the cooling phase. During the injection and holding pressure phases, the software analyses the pressures curves in all cavities. The system automatically calculates the optimal set-point temperature for each hot runner tip, which is then transferred via an interface to the hot runner controller. The mould is automatically balanced during process start-up, and continuous optimisation keeps it stable during production. The CoMo Injection continuously monitors the quality of parts produced and signals any need for automatic separation of rejects.

Hot-runner balancing eliminates the need for time-consuming manual optimisation and adjustment.