SU714450A2 - Device for counting filled mould-boxes - Google Patents

Description

(54) DEVICE FOR ACCOUNT FILLED OPOK

I

The invention relates to the field of computer systems in automation and can be used in metallurgical production.

Devices for automatic counting of cast flasks are known, containing a photosensor with an amplifier, a blocking circuit, a shaper unit, sensors of the conveyor state and loss of the counting sign, a pulse generator, and a counting unit {1J,

The disadvantage of this device is the low accuracy of the counting, since the counting of cooled down pour flasks is carried out by counting the number of pulses produced by a clock pulse generator equal to the number of platforms within the conveyor’s casting area. In addition, the indicated device allows only the total number of flasks to be counted.

According to the main author. St. 496966 a device for counting cast flasks is known; containing a photo sensor, a flask presence sensor, a conveyor condition sensor, a time relay, an AND circuit, one of which is connected to the counting unit through the driver, the re-.

the shift offset, one of the inputs of which is connected to a photo sensor connected to the input of the first inverter and to one of the inputs of the first circuit AND, the other input of which is connected to one of the inputs of the second circuit AND,

the inputs of which are connected to the flask presence sensor, to the conveyor condition sensor, time relay, to the input of the second inverter H to one of the inputs of the third circuit AND, the other inputs are connected to the outputs of the inverters, and the output is connected to another input of the shift register, an output connected via the second circuit AND to one of the inputs of the fourth circuit AND, the other input of which is connected to the output of the first circuit AND connected to the time relay 2 |.

Under the conditions of the use of automatic control systems in the foundry, more accurate and reliable information is required on the number of filled flasks in the field and in the molds. The purpose of the invention is to improve the accuracy of the device.

This is achieved in that the device according to the author. St. No. 496966 entered sequentially connected decoder, pulse shaping unit H meter block, 1-Galich sensor {platforms, which are connected to clock inputs of shift registers, and coding blocks containing a sensor made half-form, position sensors of the transport mechanism, trigger, OR element and the encoder, the outputs of which are connected to the inputs of the OR element and the inputs of the recording of shift registers, whose inputs are connected to one of the inputs of the decoder, the other inputs of which are connected to the output of the imager, polo sensors directly, the sensor of the half-molds made through a trigger is connected to the inputs of the encoder, the output of the OR element is connected to the second input of the trigger. . . The block diagram of the device is shown in the drawing, which shows encoding blocks .1, shift register 2, decoder 3, driver unit 4, counter block 5, platform availability sensor b, sensor sensor 7, presence sensor 8. conveyor condition sensor 9, relay time 10, inverters and 12, AND 13-16 circuits, shaper 17, shift pan 18 registrar and counting block 19. The encoding blocks include sensors made half-form 20, triggers 21, position sensors of transport mechanisms 22, elements OR 23 and encoders 24 The device works as follows. The sensors of the fabricated half-molds 20 are mounted on the molding machines; making the top half-form. The position sensors of the transport mechanisms of the half-molds 22 are installed in the installation zones on the conveyor of the upper half-molds. The number of sensors 22 is determined by the number of platforms in the respective 1 service areas of the conveyor by molding machines. The sensors 22 are dispensed only at the moments of passage in the zones of their sensitivity of the mechanisms for transporting the half-molds from the conveyor to the molding Machines. The number of shift registers 2 is determined by the number of bits of the number of pairs of molding machines in the binary code. The number of bits in the shift registers 2 is determined by the number of platforms in the conveyor section from the counting section of the filled flasks to the beginning of the conveyor service area of the molding machine furthest from these sensors. The number of coding blocks, the formers in block 4, and the counters in block 5 are determined by the number of pairs of molding machines. The writing of the code of the molding machine which manufactured the upper half-form into the shift register i 2 is carried out as follows. At the time of the completion of the manufacture of the upper half-mold by a molding machine, a high-level signal from the output of the sensor made by half-molds 20 sets the flip-flop 21 to the state b. After installing the fabricated top mold on one of the conveyor platforms in the service area by its molding machine, the half mold transport mechanism returns from the conveyor to the molding machine, successively along its path into the sensitivity zones of the position sensors indicated by the block 22 mechanism. The sensor unit 22 generates a high level signal, which is fed to one of the inputs of the first 24. The other inputs of the encoder 24 receive a high-level signal from the output of the trigger 21. At the outputs of the encoder 24, the code of the molding machine produces the upper half-form, with the indication of the offset register address to which this code is written. At the same time, the code from the outputs of the encoder 24 through the element OR 23, the trigger 21 is set to the state "O", and a low level signal is set at all the outputs of the encoder 24. Promotion of information in shift register 2 is carried out in the rhythm of the conveyor by signals from the output of the platform presence sensor. 6. The count of flooded flasks made by the rolls of the molding machines, characteristics etc as follows. From the outputs of the shift register 2, information is fed to one of the inputs of the decoder 3. If the form is filled, then the other inputs of the decoder 3 from the output of the former 17 receive a high signal and one of the outputs of the decoder 3 corresponding to a certain pair of molding machines, and a high level signal appears at the output of the block 4 associated with it. At the same time, the corresponding counter of block 5 counts the next flooded flask made of a specific pair of molding machines. In the proposed device, the counting count is significantly reduced due to the fact that the account of filled flasks, both hot and cooled after long downtime of the conveyor, is carried out only if the flasks on the platform of the signals that are molded by specific pairs of molding machines are available from the decoder outputs. At the same time, all not knocked back mold knocks, and molds with mold waste are perceived by the device as empty platforms and are not included in the counting error. In the device, only the defective forms counted after the long downtime of the conveyor as filled. The device practically excludes the possibility of simulating the account of filled flasks,

Claims (1)

Claim A device for counting flooded Flasks by ed. St. No. 496966, characterized in that, in order to improve the accuracy of the device, sequentially connected decoder, pulse forming unit and counter unit, platform presence sensor, which is connected to the clock inputs of the shift registers and coding blocks containing the sensor of the manufactured half-molds, sensors are introduced into it. provisions of the transport mechanism: tripping, trigger, OR element, and encoder, the outputs of which are connected to the inputs of the OR element and to the recording inputs ^of shift registers ¹ , the outputs of which are connected to one of the decoder inputs, others inputs _: which, are connected to the output of the shaper, the position sensors of the transport mechanism directly, the sensor from; prepared half-forms through a trigger are connected to the inputs of the encoder, the output of the OR element is connected to the second input of the trig. repay ^; . .··: / ^: Ar.