SU1460325A1 - Arrangement for monitoring the presence of workpieces in grab feeds - Google Patents

Description

(21) 4109168 / 25-27

(22) 06/30/86

(46) 02.23.89. Bul L y

(71) Barnaul production. Association “Altanpressmash”

(72) Yu. I. Bocharov and V. A. Su.khoveev

(53) 62; .979 (088.8)

(56) USSR Author's Certificate .NV 180425, cl. B 21 D 55 / (Yu. 1969

(54) TOOL TO CONTROL AVAILABLE PREPARATIONS IN GRAPHIC UNDER MECHANISMS

(57) The subject matter relates to the field of equipment, in particular, to protective and safety devices of equipment for pressure treatment. The goal is to increase reliability by self-correcting the health and operation of workpiece sensors. This goal is achieved by introducing into the device a node of the satellite monitor, cocroHjuero from a cycle sensor, a switch, a controller, and a thyristor key with an indicator. During the supply stroke, the sensors mounted on the grippers are connected in parallel. In the absence of a blank in one of the grips, its sensor is triggered and passes. a signal from the commander to a .distrial blinker, which turns on the switching off actuator, the signal of which is fed to the press control circuit to turn it off. At the same time, the corresponding indicator is turned on. During the idle time of the grab feed, the switch connects the ace sensors in series, i.e. In cliy4ae, the failure of a signal through any of the sensors generates a press off signal and a corresponding indication. This achieves an increase in the reliability of the device, and consequently, the press with feed. 2 Il.

WITH

The invention relates to mechanical engineering, in particular to the protective and safety structures of equipment for pressure treatment.

The purpose of the invention is to increase the reliability by self-monitoring of the Ispra-1H and the functioning of the sensors for the presence of blanks.

FIG. 1 shows a block diagram of the device, implemented for one position of control; in fig. 2 shows a thyristor blinker with an indicator.

The device contains a sensor 1 for the presence of a blank in the form of a contactless switch and a spring-loaded control probe 2 moving in a guide .3, a command device 4 connected to the input of sensor 1 (and other similar sensors if present), as well as a vehicle blinker 5 s indicator 6, additional shutdown unit 7, cycle sensor 8 and switch 9. whose number of outputs corresponds to the number of workpiece sensors. The workpiece 10, the presence and position of which is controlled, is held and moved by the clamshell L1} Heinoj by means of the grippers 12. Sensor. 8 is placed under the clamshell line. The sensor 8 of the cycle switch 9. The thyristor bliiker 5 with the indicator 6 and the command device 4 are the nodes for the self-monitoring of the health and functioning of the sensors for the presence of blanks. T :: the riistor blinker 5 is made on the thyristor 13. which is connected in series with the indicator 6 and the reset element 14.

The device operates as follows.

During the transfer of the workpieces 10 (FWD-.OD), the cycle sensor 8 gives the command

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switch 9 to the parallel connection of all sensors I. the inputs of which at this time from the command device 4 receives the corresponding strobe signal. If the workpiece 10 is in the grippers 12 and the device is intact, then the strobe signal is not passed through the sensor 1. If the workpiece 10 is absent from one of the grips 12, then the corresponding sensor I transmits a strobe signal, which goes further to the corresponding thyristor blinker 5 and then to the shutdown unit 7, which generates a command to stop the press, and LED 6 (lamp or LED and alarm panel).

During each speed run of the i-ferry lines, sensors 1 are self-monitored. For this, sensor 8 of the loop commands the switch 9 to serially connect all used latches I. To which at this time the corresponding strobe is received from commander 4.

If the cat would have one probe 2 (for example, it stuck in the extreme right position - iiii; i) or at least one of the contactless sensors of sensor 1 is faulty (for example, it does not constantly transmit a signal). ) severe) the signal through sensor 1 does not go through 1 weight mountain blimer 5 exactly in case the command to block 7 is turned off and on indicator 6, thereby signaling an emergency situation and preventing the punch or press.

-the signal on the indicator 6 is being dried, it is only condensed by element 14 by turning off the power, i.e. the thyristor 13 for indi-KiiTopa t) is also a memory element.

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During self-monitoring of the health of the sensors I, they are checked for a cycle, their state is "permanently closed and" permanently open, since, in normal operation, these states in the cycle should alternate.

This results in an increase in the reliability of the grab feed and press, i.e. device efficacy.

Claims (1)

Invention Formula A device for countering the presence of workpieces in grab feeders, containing sensors for the presence of workpieces in the form of contactless switches and counterfeit probes interacting with them, as well as a disconnect switch connected to the press control system. different in what. In order to increase reliability by performing self-monitoring of the device health, the OIO is equipped with a cycle sensor and switch connected in series, as well as thyristor blister blocks with indicators not less than the number of workpiece position sensors, and the codes of each thyristor blinker are connected to the outputs of the workpiece position and cycle sensors and the outputs are with the switching off actuator and the indicator, while the number of switch outputs corresponds to the number of workpiece sensors and each of these outputs is SEC., 1Unit to the input of the corresponding blank sensor From dotchik, 7 On SAOK 7 disable FIG. 2