SU371086A1 - HYDRAIL PRESS MOLOT - Google Patents

Description

The invention relates to the field of forge and press engineering.

According to the main author. St. No. 303211 is known for a hydro-obressive nress hammer containing a power frame with fixed crossbars and a working cylinder connected by a pipeline to a power source.

However, in a known press hammer, hydraulic drive systems, using one type of working fluid, can be applied to a press operating only on this fluid. This eliminates the use of a common pump-accumulator station for presses operating on different working fluids.

In addition, when used as a working fluid of mineral oil in presses with pump-accumulator drive, nitrogen-oil accumulators are required, which require charging the accumulator with nitrogen to compensate for leaks.

When using air instead of nitrogen, it is necessary for safety purposes to separate the air from the oil with a piston, plunger or diaphragm.

In order to increase the efficiency and providing the possibility to use the working hammer in the working cylinder and the power source of various energy carriers, which is installed in the pipeline connecting the working cylinder with the power source.

an additional cylinder with a floating energy separator.

The drawing shows the described hydraulic screw press hammer.

The hammer includes a water-emulsion pump-accumulator station consisting of pump 1 and battery 2, separator 3 with plunger-separator 4, screw cylinder 5 with working plunger 6j, feeder 7, return cylinders 8 to the valve distribution and safety apparatus. The switchgear consists of three boxes 9, 10 and // valves of the same design, each of which has pressure 12 and drain 13 valves.

These valves and the valve 14 of the acceleration stroke are forced to drive from the cylinders 15, which, in turn, are triggered by the control actuator (not shown).

Hydraulic overload fuse serves valve 16.

For replacing and cooling the oil, an auxiliary pump 17 and a spool 18 are used. In the line connecting the battery 2 to the separator 3, a check valve 19 is installed.

Drive hydraulic press hammer works as follows.

At the command "Start, the drain valve of the valve box 11 opens and c) the eT-e-return cylinders 8 with a drain. At the same time, the pressure valves of the boxes S and 10 valves open, which open the passage for water or the emulsion from pump 1 to feeder 7 and from it to separator 5. Accuyul 2 is blocked by a check valve 20 and no liquid flows from it.

Under the pressure of water or an emulsion in the right cavity of the separator 5, the plunger separator 4 is set in motion and squeezes the oil from the left side of the separator into the hydraulic cavity of the screw cylinder 5.

The working plunger 6 and the movable parts of the press-moit are set in motion - the stroke is moving. The pressure in the screw cylinder does not exceed the pressure created by the demultiplication of the pump pressure in the feeder 7.

At a certain moment of the approaching stroke, the pressure valves of the valve boxes 9 and 10 are closed, for example, the end switch command (in the drawing is closed), and the acceleration stroke valve 14 is opened.

In the right side of the separator 3, the pressure of the water or the emulsion rises to the levels caused by the pressure in the battery 2. The pyuijer separator and, accordingly, the moving parts of the press hammer accelerate, i.e., the acceleration takes place, during which the moving parts of the press The threshing hammer is accelerated to the required speed and, by the time the workpiece is deformed (not shown), the required energy is accumulated.

The deformation of the workpiece occurs when the impact is jointly and simultaneously struck due to the previously accumulated kinetic energy of the moving parts and pressing from the action of a high-pressure fluid, which continues to act on the end of the screw cylinder 6, creating significant axial hydraulic force.

At the end of the deformation stroke, the valve 14 is closed, the drain valve and the pressure valve of the valve box 11 opens, the pressure and drain valves of the corresponding boxes 9 and 10 open.

The high-pressure fluid from the pump / enters the return cylinders 8. The movable parts of the press hammer are lowered and the plunger 6 displaces the oil from the cylinder 5 into the separator 5. Under the pressure of the oil, the plunger-separator 4 moves to the right and displaces water or enulse into the feeder 7. From the upper cavity of the feeder 7, the water or the emulsion enters the drain.

0 When the feeder 7 is filled, the drain valve of the valve box 10 closes, the pressure valve closes and the drain valve of the valve box 9 opens. The liquid from the separator 3 goes to the drain.

5 At the end of the return stroke, the drain valve closes; 0y valve of valve box 9, the pressure in the system rises, and inductive braking of the plunger separator 4 and the working plunger 6 occurs.

0 In this case, part of the liquid is accumulated in the battery 2 through the non-return valve 19. The moving parts of the press hammer are stopped. During the return stroke and between cycles, to the oil cavity of the separator with

In order to cool the oil, a pump 17 is connected, which replaces the oil and cool it;

After the movable parts of the press hammer have taken the lower starting position, auxiliary operations, such as extending the table with the lower chip, pushing the chips and preparing the press hammer for a new turn, will take place. The press hammer cycle is completed.

Subject invention

0 Hydraulic screw press on the author. St. No. 303211, characterized in that, for the purpose of raising to, .e. and providing opportunities for use in the working cylinder and the pitapi source of various energy sources, it

The system is installed in a pipeline that connects the working cylinder with the power source, an additional cylinder with a floating piston that separates the energy carriers.

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