SU496195A1 - Hydraulic Press Control System - Google Patents

Description

(54) HYDRAULIC MANAGEMENT SYSTEM

Press release

but

Straight 14 enters the acceleration cylinder 5, and the cavity of the working cylinder 4 is filled with liquid from the tank and filled. A large amount of liquid is dispensed from the return cylinders 7 through the distributor 1O, line 15, supporting clanap 9, distributor 2 to the drain.

Before trimming the ring, when the product is drawn out, liquid from the return cylinders 7 is discharged through the annular gap 13 of the valve 12 at a relatively low flow rate. For trimming the ring, an additional

the force to the stretching force, therefore, in the Momept ring trimming in the working cylinder 4 there is an excess energy of the elastic distortion.} Accp fluid compression, under the action of which, after the trimming of the ring, the accelerating parts of the press are accelerated

therefore, the plungers 8 return cylinders.

With a sharp increase in the speed of movement of the plungers of the return cylinders 7, the flow rate of the liquid increases dramatically

through the annular gap 13 of the valve 12 and the force acting on the valve nati increases, which, overcoming the sonrota of its spring, closes. The fluid from the recurrent sawdust is expelled only through the recurrent uk nficx cfijihiiO hole

four

throttle 11. The latter creates a support in J cylinders 7, which suppresses the elastic deformation energy of the fluid compression, thus reducing the pressure in the working cylinder 4, which eliminates the dynamic overload of the press units. Thereafter, the press is switched to reverse.

Claims (1)

Claims. A hydraulic press control system comprising a working cylinder with a plunger connected to a power source through a main valve and a controlled two-valve valve, as well as an accelerated cylinder with a choke and return cylinders located in the plunger, and connected to a power source through a main valve and a supporting valve, so that, in order to increase the strength of the press assemblies and the reliability of the system, it is equipped with those installed in the line connecting the return cylinders with and A power supply unit, an additional controllable two-way distributor and a choke with a pre-spring adjustable valve, the supravalvular cavity of which is connected with the plunger cavities of the return cylinders and through the choke with a drain.