1000 kN closing force with optimised CYTEC Machine
Higher closing forces are very much desired for some vacuum forming processes, particularly for twin-sheet applicatons. GEISS have been able to again increase the closing force of the machine table of Vacuum forming machines considerably and therefore can serve customer requests even better.
On the technical side, internal hydraulics will never be used on GEISS Thermoforming machines, because hydraulics in heat forming machines are expensive and slow and many customers do not want to deal with servicing of hydraulics. GEISS employees have managed to realise the required balance lifting of both machine tables purely with four hydraulic core pulling cylinders. Only these will be supplied via a small completely enclosed hydraulic manifold. These pull the tables together with maximum 1000 kN. The thermoforming machine will remain pneumatic and is operated with cylinders as usual. The optional equipment is pneumatically sufficient up to approximately 70 kN. Three-phase servo motors which as standard reach up to 200 kN and in special series even up to 360 kN can be used. The newly reached closing force with 1000 kN via core pull cylinders for pressure and twin-sheet applications completes the range in respect of output towards the top end.
One of these machines is in production in Thailand. Pickup covers are being manufactured. As the covers need to be suitable to be walked on, twin-sheet parts with high surface quality and large welding area were required – an ideal job for this machine.