Product category: Closed loop control equipment for pressure
Cavity Pressure Sensors
PRIAMUS cavity pressure sensors are based on the piezoelectric measuring principle. On this account they are particularly suitable for the use in the injection molding process, because due to the cyclic application a defined operate and reset status is assured. All PRIAMUS cavity pressure sensors have a separable connecting cable, which can be replaced in case of defect, and a machinable sensor front.
There is never only a single issue with injcetion molding. Therefore there is never only one solution. FILLCONTROL consists of different system components which are - depending on the application - used for documenting, monitoring and controlling of the injection molding process depending on the application. This is always based on real process data measured in the mold. Because good parts are not made with the machine, but only inside the mold. The moment that the melt front passes over a sensor, it is automatically detected by the system. With this information we can determine material viscosity, open and close valve gates, and sequentially control the mold so that flash is prevented.
Product category: Measuring equipment for melt tempeature
Melt Temperature Sensor
The injection molding process is a thermodynamic process in which the plastics pass different aggregate states. The quality of the manufactured molded parts depends primarily on the pressure and temperature conditions. The temperature of the material in the different stage of molding will determine the quality of the part that is produced. Melt temperature sensors are used in areas where the plastic melt does not solidify, but permanently stays in a viscous condition. For this reason the melt temperature can be described as a material parameter while the cavity temperature represents a real process parameter. Melt temperatures are therefore suitable to be used as reference values for viscosities determined by PRIAMUS systems in the mold or in general for the evaluation and monitoring of material properties during the injection molding process. Cavity temperature sensors however are applied directly in the cavity of an injection mold and usually touch the solidifying plastic melt as soon as it reaches the sensor position. This way both, the mold surface temperature of the cavity wall as well as the temperature change upon arrival of the melt at the sensor can be determined. The automatic detection of the melt front allows a number of control methods, such as the automatic switchover to holding pressure or the automatic balancing of multi cavity molds. The melt temperature measurement with type 4050A is based on a measurement at the bore hole wall of the melt channel. It can therefore be applied universally and independently from the diameter of the nozzle or the hot runner manifold and is always related to the same reference point. Alternative methods measured inside of the melt are not universally applicable due to the different diameters of the melt channels and because the exact measuring point inside of the melt is not exactly defined. Furthermore the melt flow might be disrupted by using intrusive sensors which can lead to significant measuring errors and also to degraded material. The melt temperature sensor has been designed for the measurement of melt temperatures in machine nozzles and hotrunner manifolds. Due to its robust and industrial design it is suitable for almost all applications in this area. The hardened sensor front allows the sensor to be used for filled and abrasive plastic melts and guarantees a longer sensor life. The special seal ensures that no leakage occurs even with high pressures as they are common in the nozzle and in the manifold.
Product category: Closed loop control equipment for temperature
PRIAMUS cavity temperature sensors are specifically optimized thermocouples of type N (NiCr-Ni). This thermocouple was chosen, because it shows compared to other thermocouples precise advantages (no corrosion, no irreversible temperature shiftings). Just as with cavity pressure it is preferable to use signal lines with safe ground connection and connecting plugs are used.
Priamus System Technologies with headquarters in Schaffhausen / Switzerland provides quality management services for injection molding. The products include cavity pressure sensors and cavity temperature sensors to complete control and monitor systems. Priamus systems do not only monitor the injection molding process but also control it intelligently. Thus an enhanced part quality results, a decrease of scrap can be seen and costs can be drastically reduced.
Priamus is represented with offices in Germany, USA as well as Japan and has sales representatives around the world.