SU114214A1 - Arrangement for automatic selection of cores for magnetic properties - Google Patents

Description

The selection of pairs of cores used in the counting equipment is done manually with an average productivity of 100-150 pairs per working day. Known automata based on the comparison of emf arising from the magnetic reversal of such cores by electric pulses, do not allow the selection of pairs of cores with completely identical magnetic properties.

The proposed device is more ;; more perfect than the known similar devices, since it eliminates this drawback. This is achieved by using two feed lines in the device; on one of which the core is held until a core with identical magnetic properties is applied to the other / shny. After that, both cores are fed to the receiving bin.

The drawing shows the kinematic scheme of the device.

The device contains two automatic lines / and 2 core feeds, devices for loading and receiving them, and a control system. The control is carried out with the help of probes 3 and 4 with current-carrying and current-collecting rods, solenoids and relays, which are triggered by the action of electrical impulses that arise when measuring the magnetic properties of the cores by the differential method. The measurement is made by comparing the emf induced in current collector rods of probes 3 and 4 when each two cores are re-magnetized by rectangular pulses of a certain frequency created by reiiepaTor 5.

On an automatic line / core supply and movement of the probe 3, it is ossified by mechanical gears driven by engine number 114214-2 -

from the electric motor 6. On line 2, these operations are performed by solenoids 7 and 8. Selection of suitable pairs of cores and movement of the cash register 9 for collecting the cores are carried out by solenoids 10, PI 12.

There are a number of cams 13 on the eye shaft of the device, which produce the commutation of the electrical circuit at the time the cores are checked.

The block diagram of the automatics electronics consists of two identical pulse conversion lines, an executive relay 14 and a generator of rectangular signals. The following stages enter each line: input amplifier 15, pulse converter 16 and current amplifier 17. The input amplifier 15 serves to amplify impulses obtained as a result of testing pairs of cores; Converter 16 is designed to convert 1 narrow pulses to pulses of greater duration; the amplifier 17 amplifies the converted pulses and acts on the output relay 18, which controls the operation of the executive relay 14.

The operation of the device consists of four cycles: "stylus triggering," core testing, "stylus lifting," shutter speed.

When the cores 19 are fed to the automatic lines 1 and 2, the probes 3 and 4 are lowered inside the cores, and the square core current pulses are supplied to the current-carrying core rods of the cores. At the same time, in the collector rods of the probes 5 and 4, ed-c- are induced, which are fed to the input of the amplifier 15 of the electronic comparison circuit.

In the first half of the cycle “verification of cores, the pulses are induced by ED-S. fed to the input of the first pulse shaping line. If these pulses have a small value (a checked pair of cores), then at the output of amplifier 17, pulses are formed, under the influence of which a relay 18 is triggered. In the second half of the considered switch, the emf pulses are generated. served on the input of the second impulse line: 1,: ov. In this case, if a pair of good-core cores is activated, a second relay 18 is activated. As a result, the first and the second relays 18 are energized by the relay 14, which contacts close the solenoids 7, W, 11 and 12 circuit. cores, and solenoid 7 lifts the probe 4 and closes the circuit of the solenoid 8, which serves to feed the next core to line 2 for testing.

The tested good pairs of cores are dropped into the cash register 9, and the solenoid 12 moves its compartments using mechanism 20. In the event that a pair of cores located on lines 1 and 2 have different magnetic properties, the core located on line 7, mechanically dumped onto the conveyor and moved back to the hopper. Another line is fed to this line and again its magnetic VOISCH1B is compared with the core located on line 2.

Up to fifty cores fed per line / are subjected to such alternate testing until a good pair is selected. After npOiBepKH, the number of cores on line 1 is triggered by a relay counter 21, the tested core on line 2 is dropped into the hopper of poor cores, and a new core 1k is in its place. Cashier 9 is designed for fifty compartments. As soon as all the cash registers are filled, the device turns off and at the same time the alarm system is activated. After replacing the cash register, the device is put back into operation.

The device is powered from rectifier 22.

Subject invention

Claims (2)

1. Device for automatic selection of cores according to magnetic properties, determined by comparing the emf with magnetic impregnation of cores, excluding that, in order to obtain the identical magnetic properties of each pair of cores, two supply lines are used in it, on one of which the core is held until another core arrives on the other liigpo. whose properties will be identical to the magnetic properties of the first core, after which both cores will be fed into the receiving hopper. 2. In the device of claim 1, the use of a counter installed at a predetermined maximum chondolo of core comparisons on one supply line with cores on another line so that after reaching this maximum number of comparisons, the core is dropped into the hopper of defective cores. - 3 - # 114214 Committee on Inventions and Discoveries at the Council of Ministers of the USSR Editor N. S. KutafinGr. 95 Information and Publishing Department. Sub. to pec. 10.1-59 Volume 0.34 p. L. Zak. 6183Discount 2175Price 50 kopecks Hypograph of the Committee on Inventions and Discoveries at the Council of Ministers of the USSR Moscow, Petrovka, 14