SU489659A1 - Hydraulic Press Control System - Google Patents

Description

The invention relates to the field of metal forming and can be used, and an impregnator, in presses for extruding embossed molds for details.

A known press control system, comprising a working cylinder connected to a high-pressure hydraulic unit through a distribution unit, as well as a low-pressure control device made in the form of a spring loaded spool in the housing associated with a drain.

However, the known control system of the press does not allow to control the working stroke of the press to a predetermined depth of extrusion, which reduces the performance of the press and the quality of the products.

In order to increase the productivity of the press and improve the quality of the manufactured products in the proposed control system, a low pressure control device is installed in the line connecting the working cylinder with the high pressure hydraulic unit and equipped with coaxially-mounted spool and rigidly connected locking clan) and a seat mounted concentrically to the valve for seating a close valve, this valve is kinematically connected to an electrical sensor provided in the system. An annular cavity with channels for connection to the drain through parallel-connected safety valve and pressure gauge provided in the system is provided in the housing of the pressure control device between the seat for seating the check valve and the slide.

The drawing shows a proposed hydraulic press control system.

The system includes a working cylinder 1, built with plunger 2 in the press frame 3. Plunger 2 is rigidly connected to the movable table 4, on which the matrix 5 is fixed with the workpiece 6. On the fixed table 7 installed in the press bed 3, the working tool 8 is fixed. the cylinder 1 is connected to a high-pressure hydraulic unit 9 by a high-pressure trunk 10, in which a relay is installed — a device 11 for controlling low pressure with a spool 12, a seat 13, a shut-off valve 14, a tuning spring 15, a lever system 16 coupled to gold ICOM 12 and cooperating with an electric sensor 17. The safety valve 18 to low pressure and a manometer 19, interconnected in parallel, are connected to the cavity 20, the low pressure switch 11 that is formed between the isolation valve 14 and the seat 13 in the end

working movement of the spool 12.

The principle of operation is 11;} with the slagging CHCTCML-I control and stress. iiaiii irviep for relieving cavities of the cavities is ;; I think so.

When applying the working fluid or 1id.x;: 1gregat 9 to the working cylinder 1, the table 4 is accelerated to rise with ycTaiio: s; en; ibL in ;; i it has a matrix 5 and a workpiece 6. With sg, p), the basis of a workpiece is 6 s working: 8, set by a pape; p1H1K) m table 7, in the trunk 10 of a high l.aslsipi; i) pressure rises, and the spool 12 device; for 11 for adjusting pressure pressure: when it comes to the left, the pressure force and spring are 15. P e reaches a magnitude of 0.5--1 kgf / cm, the check valve 14 sits in the saddle 13 (the shut-off valve closes), a further increase in pressure does not lead to displacement of the tooth.

The lever system 1G turns around, the electric sensor 17 is triggered, which gives the command to transfer the table 4 from the accelerated stroke to the workers (pressing) and other commands to carry out the necessary technological cycle and press. A pressure gauge 19, connected to the cavity 20, fixes the closing pressure of the shut-off valve 14, and the second valve, 18, which is set to close the pressure of the valve 14, prevents the AND switch from low pressure from breaking in

1. a hydraulic control system, iiiJCCCOM, containing coupled through raiipc-sharing equipment with hydraulic unit g:; as a result of the pressure of the working pilipdr. as well as the ystr {j istcto dt reg: for a low laple of. ibiHO.THCiiHoe in 15i, che) Yazmsn1eno1CH) in the isoppus of a spool-shaped spool connected with a drain, about the same, that, with a nely increase in the performance of the press and new quality of manufactured products, art. About dt 1e1ulprovapi low pressure. hp installed in the highway, connecting ynien ;; a worker pplinder with hydraulic unit high. lley; | , and C11abzheio located in the housing coaxially zolotpiku and hard with a pyramid valve connected to a valve and placed with a saddle for landing a valve valve, while the valve is kinematically connected and electrically operated with an electric sensor in the system.

2. System ui 5avle 1i io i. 1, about tl and h and to P1 and with that. that in the case of the device for regulating the pressure between the saddle for the landing of the scorpionized clan, with the spool of the collar, the cavity with the channels for connecting with the elvol through the 3 parallel-connected preloads provided by the system; drink it | i, iaiian and pressure gauge.

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