The hydraulic movement of the lower roll, four-roll plate ...
The proposed hydraulic movement of the lower roll, four-roll plate bending machine operates as follows. When vklyucheniyami valve 19, the flow divider 21, the check valves 23 and 24 reaches the Rodless cylinders, hollow cylinders 3 and 4. The lower roll 2 is moved up, while the device 22 feedback slide valve flow divider 21 is held in position ...
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