HYDRAULIC PRESS Russian patent published in 2014 - IPC B30B1/32 B30B15/24 

FIELD: machine building.

SUBSTANCE: hydraulic press comprises a moving beam and a fixed beam, two actuating cylinders and two return cylinders, a pump station and a system of distribution and directional control equipment. The said system comprises sixteen back pressure valves, fourteen two-way cut-off slides, a four-way three-position reverse slide, a four-way two-position slide, a main doser and an additional doser installed coaxially. Each doser is made with two identical high pressure dosing cylinders and two identical low pressure dosing cylinders. The cylinders' plungers form movable units rigidly fixed to each other and fitted by a bar to switch the four-way two-position slide. One input of the said slide is connected to the drain and the other - to the output of the four-way three-position slide. The high pressure dosing cylinders of the dosers are of periphery mounting and are connected to one of the power cylinders pairwise. The low pressure dosing cylinders of both dosers are connected to the pump station fluid tank separately via the back pressure valves.

EFFECT: expanded process functionality of a press and simplification of its control system.

2 cl, 1 dwg