SU425694A1 - CONTROL SYSTEM OF DISPLACEMENTMODE PULSE CRIMBED RIGHT PRESS - Google Patents

Description

I

The invention relates to the field of mechanization and automation of forging and stamping mining.

A known system for controlling the movement of a support scroll axle of a crank pressure press, comprising a profile curvature sensor and a control unit for moving the support slide.

The aim of the invention is to provide an automatic adjustment of the movement of the support slider depending on the curvature of the profile and increasing the accuracy of the alignment.

This is achieved by the fact that the unit for moving the support slide is made in the form of a moving stop and a fixed pair of start-up contacts, which is located at a given distance from the moving pair and is mechanically connected to the potential engine and the rotor of the electric motor that is electrically connected to the curvature sensor. nrofil, and between the start and stop contacts is the closing element.

In order to carry out the movement of the closing element, the latter is mechanically connected to the rotor of the electric motor, which is electrically connected via an inverter to the electric motor for moving the stop contacts.

2

The drawing shows a control system.

The system contains curvature sensors, placed both in the reference / and in the correct 2 sliders, and the automatic control unit of the schag. The curvature sensor includes a measuring pin 3 located between the sliding supports of the slide and rigidly connected to the slide valve 4 of the potentiometer 5 fed from a separate DC source. The curvature sensor pin is connected to the brake device 6, which is controlled from the contact sensor of the extreme forward position of the correct slider. Thanks to this pin

is fixed when moving away from the profile. This is necessary in those cases when the sliding supports of the supporting slide are collapsed and the supports of the correct slide are separated, and the curvature measurement is carried out by a sensor placed in the correct slide. To switch sensors and an interlocked toggle switch 7. An automatic pre-load consists of a non-moving pair of start-up contacts 8 to control the movement of the reference slide by an electric motor, moving stop contacts 9 of the same circuit, placed on a ring element 10 with a toothed sector that is in a chain with a gear wheel L. Wheel 11 fixed

on the shaft 12, l is strictly connected to the engine

13 potentiometers 14 and a shaft of an electric motor 15 DC. Potentiometer 14 is powered by a separate source of direct current. The engines 4 and 13 are electrically connected to the electric motor 15. Contacts 8 and 9 are closed uniformly moving along an arc of a circle 16 by a contact plate 17 driven by an electric motor JM 18. The electric motor 18 is controlled from EHBeipcore 19.

When the correct slider is in its extreme pre-day position, the profile is brought to it with the help of the reference slider. In a gateway: and from the direction of curvature of the profile, this or that curvature sensor is turned on. The correct slider is retracted, and the curvature sensor and driver are powered. The shaft 12 rotates and 0 | SgNa influences 1B-1, then 1, when applied to the springs, ascending by sliders 4 and 13, from potentiometers 5 and 14, are equalized. Stop-stop 9 stops at a certain distance from start-up contact 8. Inversar 19, by the absence of VISU, the voltage on the terminals of the electric motor 15 generates a signal that turns on the electric motor 18 for the drive of the contact plate 17. The electric motor of the reference slider is turned on for the required period of time and the reference slider moves to the right schap. The contact plate 17 also includes a press at the working stroke. When the curvature changes, the voltage increases: at the terminals of the electric motor 15 it turns off the engine-displacement of the plate 17, and the press control system is disconnected from the valve by the correct creeper. There is an establishment of a new schag displacement reference

the slider, and then the new working stroke, and so on until the stop contacts 9 are aligned with the start contacts 5 and do not turn off the electric motor 18. In the event that a curvature change does not occur at any editing stage, the contact plate / 7 does not stop, and the playhead slider moves by the same amount as before.

Subject invention

1. The control system of the movement of the slider support crank correct

a press containing a curvature sensor of the profile and a unit for step 1 displacement of the support slider, characterized in that, in order to ensure the automatic setting of the movement spacing of the support slider depending

from the curvature of the profile and improving the accuracy of editing, the unit for moving the support slide is made in the form of a moving pair of stop contacts and a fixed pair of start-contacts, located from the moving pair

at a predetermined distance and mechanically connected to the engine of the potentiometer and the rotor of the electric motor, electrically connected to the profile of the profile of the avisation of the profile, and between

element.

2. A control system, characterized in that, in order to effect the movement of the closing element, the latter is mechanically connected to the rotor of the electric motor,. which is electrically connected via an inverter to the motor for moving the stop contacts.

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