B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/82 (2006.01)
Patent
CA 2720591
The present invention relates to a device for activating a double action hydraulic piston of an injection moulding machine with a hydraulic drive (10) of an injection moulding machine, comprising a hydraulic cylinder and a double action hydraulic piston retained inside the hydraulic cylinder, wherein the hydraulic cylinder separates the hydraulic piston into two piston chambers (A, B), and also comprising a hydraulic supply and a tank. The invention utilizes four 2/2-way valves (V1 to V4) to control the double action hydraulic piston; the first 2/2-way valve (V1) is connected to the hydraulic supply (P), at one port thereof, and to the first piston chamber (A), at the other port thereof; the second 2/2-way valve (V2) is connected to the hydraulic supply (P), at one port thereof, and to the second piston chamber (B), at the other port thereof; the third 2/2-way valve (V3) is connected to the first piston chamber (A), at one port thereof, and to the tank (T), at the other port thereof; and the fourth 2/2-way valve (V4) is connected to the second piston chamber (B), at one port thereof, and to the tank (T), at the other port thereof.
Craig Wilson And Company
Netstal-Maschinen Ag
LandOfFree
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