Priamus Sensors, systems for real-time melt detection
Switzerland – Priamus said it offers sensors and systems designed to automatically detect in real time when the plastic melt reaches a sensor during injection moulding.
The company said that this method allows valve gates to be controlled depending on the process, while viscosity variations can be compensated as opposed to time-, stroke-, and pressure-dependent methods, which do not offer this option.
The method that directly controls the melt flow is appropriate for a number of applications, such as automatic sequential control, automatic venting, and melt flow-controlled injection compression processes, the supplier explained. Generated switching signals are usually directly connected with the machine interface in order to open or close the valve gates.
In many cases, these interfaces are mounted outside of the machine, situations for which Priamus said it has developed a number of solutions. Especially with multi-cavity moulds, it is often necessary to provide a number of switching signals in a systematic and orderly manner, the firm noted.
For this purpose, several control cabinet solutions have been created that vary in dimension and the number of switching signals, the manufacturer reported. These external interfaces are available for systems ranging from 16 switching signals up to 96 switching signals, the company added.