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Inglass Stand-alone, servo-driven valve gate hot runner solution

Editor: Briggette Jaya

Italy – Italian hot runner specialist HRS-Flow (belonging to the Inglass Group) premiered its newly developed Flex-flow One, a servo-driven valve gate system for hot runner nozzles at K.

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Freely selectable opening velocity of the valve pins offers the ability to optimise the mould cavity filling.
Freely selectable opening velocity of the valve pins offers the ability to optimise the mould cavity filling.
(Source: Nadia Creutz)

According to the company, Flex-flow One works without a control unit and functions as a stand-alone system. For every hot runner nozzle in a multi-step setting, the needle stroke, position and velocity can be fixed. The electrical drives of the valve pins precisely control the melt flow to allow the injection moulding of parts with high reproducible quality. These values can be individually set for every nozzle of the hot runner system. The settings are saved in a driver module and assembled on the hot runner system ready for series production. Should the settings need changing, this is easily done with the device, ESI (External Smart Interface), which is connected briefly to the driver module, HRS-Flow says.

The main benefit of this new technology is the connection with the injection moulding machine, which provides the hot runner system with the 24V-signal for opening/closing needle. The process window with Flex-flow One is much larger for the variably adjustable needle stroke that has a range of up to 18 mm. The low-maintenance electrical needle valve works more precisely. Without needing oil or water, the system provides a cleaner working environment and is thus suitable for use in clean-room conditions. Other applications are in injection-moulding machines and moulds.

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