SU1575216A1 - Device for counting packages transferred by conveyer - Google Patents

Abstract

The invention relates to devices for counting and recording the number of packaging containers (including from the number of packages made by a machine) and is intended to account for metal baskets with milk containers moved on automatic milk spill lines. The aim of the invention is to increase the reliability of the account. The device contains primary converters 1, 2 and 3, inverters 4, 5 and 6, drivers 7, 10, 13, 15 and 19, delay element 8, elements AND 9, 16 and 20, triggers 11 and 12, counters 17 and 24, and rewriting unit 23. The reliability of the account is increased by monitoring the operability of the elements of the device. 1 hp ff, 4 ill.

Description

The invention relates to devices for counting and recording the number of packaging containers (including from the number of packages manufactured by the Machine) and can be used in mechanical engineering, metallurgy, woodworking, textile and food industries (in particular, for metal baskets with milk containers transported by conveyor on automatic milk spill lines).

The purpose of the invention is to increase the reliability of the account.

FIG. 1 shows a block diagram of the proposed device; in fig. 2 - timing diagrams for the operation of the device; in fig. 3 - installation of levers with primary converters j in FIG. 4 - rewriting unit.

The device contains the first 1, second 2 and third 3 primary converters, the first 4, second 5 and third, 6 inverters, the first driver 7 pulses, the delay element 8, the first element And 9, the second driver 10 pulses, the first trigger 11, the second trigger 12 , the third driver 13, the first one-shot 14, the fourth driver 15 mp, the second element is AND 16, the first counter 17, the second one-wave 18, the fifth driver 19 pulses, the third element And 20, the second counter 21, element OR 22, rewriting unit 23 and third counter 24,

Block 23 overwriting contains a generator of 25 pulses, the element And 26, the trigger 27 and the counter 28.

Metal belts 30 are moved along the conveyor 29, in the zone of which the two upper arms 31 and 32 and the side lever 33 are mounted.

The levers 31 to 33, with arm lengths of 225 and 45 mm, respectively, rotate to working angles of 20 to 40 relative to fixed axles mounted on the frame, 34 to 36.

The short arms of the levers 31 - 33 are made in the form of flat flags of the D16T aluminum alloy, which, when the device operates without making mechanical contact, enter the slots of the corresponding primary transducers 1 - 3,

ten

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Guessing the presence. (Absence) of flags in the slit, which leads to their triggering.

The long arms of the levers 31 and 32 are made in the form of a loop from spring wire with a diameter of 2 mm, and the lever 33 in the form of a pusher from alloyed sheet steel and mechanically contact the sensors with the baskets 30 that move along the conveyor 29 the front and rear upper edges of the baskets, and the lever 33 - along one of the side upper edges of the baskets).

The long shoulders of all the bottom arms when installing the sensors on the frame for basket dimensions are of adjustable size with a nominal size of 50 mm, while the limits of adjustments provide for changing the angle of rotation of the sensor arms from 20 to 40 °. The return of the levers of the sensors to their original position after passing with them the structural elements of the objects of the account (the edges of the baskets) is carried out with the help of springs 37 - 39.

The device works as follows.

The first package (for example, a metal basket 30 with milk bottles) during its movement on the conveyor 29 with the front edge deflects the lever 31. At the same time, a logical zero (Fig. 2a) is formed at the output of the converter 1, which is inverted by the inverter 4, and received at its first output M1 (Fig. 26) starts up the shaper 7. The generated pulse (5-10 microns) (Fig. 2c) sets the triggers 11-12 to state 1, starts the one-shot 18, generating the pulse (Fig. 2d), the duration of which is equal to passing the basket 30 a path equal to the length baskets 30 minus half the duration of the strobe impulse, arrives at the second input of element I 20 and resets counter 24 to O. On further movement, basket 30 with the same leading edge deflects levers 33 and 32 (Fig. 2g), resulting in signals from converters 3 and 2 through inverters 6 and 5 (Fig. 2i), the corresponding shaper 10 and 13 are triggered. The pulse of shaper 10 sets the trigger 11 to O, which is 30

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It steps on the first input of the element And 9 and prohibits its triggering, so the counting pulse 17 from the front edge of the basket 30 does not reach the counter 17. The impulse of the imaging unit 13 (Fig. 2k) starts the one-shot 14 (Fig. 2n), arrives at the second input of the element AND 16 and resets the counter 21 to O. After the leading edge of the basket passes, the levers 31 and 32 appear in their original (down) state, and the lever 33 remains deflected, as it rests on the basket. Upon further movement, the rear edge of the basket 30 now deflects the lever 31 and all the above processes are repeated with the only difference that the first input of the element AND 20 enters a strobe (Fig. 2e), as a result of which the element 20 also operates in the counter 21 recorded 1.

Continuing the movement, the same rear edge of the basket 30 deflects the lever 32, the signal of which forces element 9 to trigger, which causes the trigger 12, from which the counter 17 operates, to add one to its content. Simultaneously, the one-shot 14, the driver 15 and the element 16 are activated, as a result of which one is recorded in the counter 24 (Fig. 2e).

Subsequently, the operation of the device repeats and, as each of the next basket 30 passes through the counting zone, each of the counters 24 and 21 alternately records 1 and resets O during normal operation of converters 1-3. If not

one of the transducers triggers, then one of the counters 24 or 21 starts to sum up the next gauge. As soon as the content of one of these counters becomes equal to 2, this counter (its second bit) through the element OR 22 starts block 23, with the help of which counter 17 will pass two missing counting units. At the same time, the counter 24 or 21 turns on a fault signaling device (not shown), giving a signal that the conveyor motor is turned on (not shown).

If one of the transducers 1–3 fails to work, then a reset signal will not be sent to the counter 24 or 21, as a result of which the counter starts to work in the mode of summing up the number of actuations left-; - the state-efficient transducer. With the arrival of two counting units | the second digit of the counter 24 or 21 is triggered and outputs the unit that passed the OR element 22, sets the trigger 27 to the enable state

for element 26, as a result of which the generator 28 starts to flow to the input of counter 28 and trigger 12. As soon as four counting pulses are received at counter 28, its third bit will trigger, which will reset trigger 27 to the state of prohibition for element 26 At the same time, trigger 12 will divide the number of pulses received by it in the amount of four into two and, thus, will add to the counter 17 missed two units of the account.

Claims (2)

1. A device for counting packages, moved by a conveyor, containing the first, second and third primary converters, whose outputs are connected to the inputs of the first, second and third inverters, respectively, the output of the first inverter through the first pulse shaper is connected to the first input of the first and second triggers, output the third inverter through the delay element connected to the first input of the first element And through the second pulse shaper to the second input of the first trigger, the output of which is connected to the second input of the first And, the third input of which is connected1 to the output of the second inverter, is the output of the first element And is connected to the second input of the second trigger, the output of which is connected to the first account, characterized in that, in order to increase the accuracy of the account, the fourth and fourth and fifth pulse shapers, first and second single-shot, second and third elements AND, OR element, rewriting unit, second and third counters, the output of the second inverter through the third pulse shaper connected to the first inputs of the second counter and of the second element And through a serially connected first one-shot and fourth pulse shaper to the second the input of the second element And the output of which is connected to the first input of the third counter, the output of which is connected to the first input of the element YYIG whose output through the rewriting unit is connected to the third input of the trigger, the output of the first pulse shaper is connected to the second input of the third counter, to the first input of the third element And through serially connected second one-shot and fifth shaper pulses with the second input of the third  The element And, the output of which is under second, the input is elemental to that OR. 2. A device according to claim 1, characterized in that the rewriting unit comprises a counter, an element, a pulse generator and a trigger, the output of which is connected to the first input of the element AND, the second input of which is connected to the output of the pulse generator, and the output is output rewriting unit and through a counter connected to the first input of the trigger, the second input of which is the input of the rewriting unit. 29 Rig.Z