Injection moulding machine and hydraulic unit for this

Details Injection moulding machine and hydraulic unit for this Injection moulding machine and hydraulic unit for this

B - Operations, Transporting

29

C

B29C 45/67 (2006.01) B29C 45/03 (2006.01) B29C 45/18 (2006.01) B29C 45/40 (2006.01) F15B 21/08 (2006.01)

Patent

CA 2730886

Injection moulding machine comprising - an injection unit with a plasticising screw and drive units for the movement of the injection unit and for the injection and after- pressure stroke of the plasticising screw, - a fixed and a moveable tool clamping plate, - a mould closing unit with a drive unit for generating the mould closing and opening movement of the moveable tool clamping plate and the tool closing force during injection, and a drive unit for a workpiece ejector device, wherein at least one of the drive units is a hydraulic drive unit with a hydraulic pump, a hydraulic cylinder and one or more control valves to activate the hydraulic cylinder, - the hydraulic fluid of the hydraulic drive unit is an electrorheological fluid, and - the at least one control valve for the hydraulic cylinder is an electrorheological valve with = at least one through-flow gap for the electrorheological fluid and = a plate capacitor arrangement for applying an electric control field across the through-flow gap.

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