SU1258711A1 - Hydraulic press control system - Google Patents

Description

The invention relates to engineering, namely, to. hydraulic pr-essam.

The purpose of the invention is to improve efficiency and reliability by preventing leakage from the hydraulic system.

A drawing is shown in the schematic diagram of the control system,

The control system includes a pump 1c safety valve 2 connected by a pressure line through the distributor 3 to the cylinders 4

return stroke and forcing cavity 5 of pressure transducer 6, the injection cavity 7 of which is connected to working cylinders 8. On the trunk 9 of return stroke Cylinders, additional Chapor valve 10 with a check valve and hydrose are installed in series. . mock 11.

The forcing cavity 5 is connected to the working cavity 12 through a pressure head. Hbui valve 13 with a check valve. The pump 4 of the control. Through the distributor 15 is connected with the regulator cavities of the distributor 3 and the two-UZN1 of the distributor 16, with the aid of the TanoBJieimoro to connect the pressure converter 12 of the converter 6 with the drain tank 1.7. At the same time, the pump 14 is connected through the return

valve 18 with a cavity 7 of the pressure transducer 6 b and through the retaining valve,.

A valve 19 with a cavity 5 of the pressure transducer 6 and a control cavity of the hydraulic circuit 11, A safety valve is installed on the Yasos 14 main line 20. The cavity 12 is transformed. The pressure 6 is additionally connected to the G tank 17 through the check valve 21.

The control system works as follows.

.In the initial position when switching on .i-iacoca 1, the working fluid supplies the valve 2 to the distributor 3 and dispenser 3 and flows into the drain

in the tank 17. From the pump 14 control

fluid is supplied to the safety valve 20, the distributor 15, to the valve 18 and fills the cavity 7 of the converter 6 and the cavities of the working cylinders 8.

The cavity 12 of the converter 6 is connected through a distributor 16 with a drain, in connection with which the piston of the converter under the pressure of the pump 14

is in the down position. The plungers of the cylinders 4 are held by the pressure slide valve 10 and the hydraulic lock 11 in the upper (initial) position.

When the left electromagnet of the dispenser 15 is switched on, the dispenser 16 and the dispenser 3 are opened, as a result of which the hydraulic lock 11 opens, the fluid from the cavity of the converter 6 is displaced into the cylinders 8, and the liquid from the cylinders 4 is displaced through the hydraulic lock 1I and the pressure slide valve 10 into the discharge valve 17 .

In this case, the working fluid enters the cavity 12 of the transducer 6 .i.h tank through the check valve 21 ..

At the end of idling, the pressure increases to the magnitude of the pressure of the slide valve 13, with the result that the high pressure fluid enters the cavity 12 and the working stroke is made. At the end of the working stroke, the left and

the right electromagnet of the distributor 15 is turned on, as a result of which the distributor 3 switches and the working fluid enters the cavities of the cylinders 4. At the same time, the working liquid is

the bone from the cylinders 8 is displaced into the cavity of the transducer 6, moving its movable piston to the original lower one. position.

At the end of the return stroke, all devices are installed at the initial position.

Economic in the implementation is achieved. Due to the increase

efficiency;

xl

...... ... l ..;

U tzQjEIXha

J5

.

 / 7

G5i

.

G5i

Editor G. Volkova

Compiled by I. Feldblyum Tehred L. Oliynik

Order 5076/19 Circulation 597 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Corrector E. Cherni

Claims (1)

HYDRAULIC PRESS CONTROL SYSTEM containing pump ·. with a drain tank, connected by a pressure line through a distributor with return cylinders and a forcing cavity of a pressure transducer, a discharge cavity of which is connected to power cylinders, a pressure spool with a check valve connected to its inlet with a forcing and an outlet with a working cavity of a pressure transducer, as well as a control pump , about l and -, which, in order to increase efficiency and reliability by preventing leaks from the hydraulic system, it is equipped with an additional pressure spool with a sample a check valve, a hydraulic lock with a control cavity, a stop and check valve and a two-position valve, while a hydraulic lock and an additional pressure valve with a check valve are installed in series on the line between the distributor and the return cylinders, the control pump is connected via a check valve to the discharge cavity of the pressure transducer and through a backup valve with a boost cavity of the pressure transducer and a control cavity of the hydraulic lock, and the working cavity of the pressure transducer The line is connected via a two-position distributor to a drain tank. SU ... 1258711>