Gefran together with Sensormate presents the innovative integrated solution IN-4000 SET for measuring injection pressure and nozzle contact force, simplifying the maintenance and adjustment of plastic injection moulding machines.
Piero Tempini, General Manager of Sensormate comments: "In injection moulding, the use of electric and hybrid machines is growing rapidly since, compared to hydraulic types, they operate with greater speed, precision and repeatability, while ensuring energy savings of up to 70%. Checking both the injection pressure and the contact force of the nozzle on the mould, which are the main variables involved in the process, as well as adjusting with absolute precision and punctually, is really important to fully reap the benefits and ensure constant quality and reliability of production". “With current methods, injection pressure is measured indirectly during operation and is determined through a corresponding conversion in the control system. Force sensors used for this purpose, such as membrane load cells for electric drives or pressure sensors for hydraulic ones must therefore be regularly compared with the actual injection pressure. In addition, if necessary, they must be corrected with appropriate parameters, which is a huge waste of time and resources” concludes Tempini.
For this reason the Gefran R&D Team, working closely with the main manufacturers of injection moulding machines for plastic, has enhanced the IN-4000 SET plug-and-play system consisting of compact sensors, magnetic adapters and a display unit for direct measurement of pressure (IN Sensor) and nozzle contact force (DAK Sensor). The probes can be easily mounted individually or together using magnetic fixing between the mould and the injection nozzle. The main advantage lies in the time required for installation, measurement and removal: being easily performed by a single operator, this is significantly reduced to between 30 and 60 minutes as opposed to several hours.
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